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  <rr:ProspectusDate contextRef="Duration_01May2012_30Apr2013">2013-04-30</rr:ProspectusDate>
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  <dei:DocumentCreationDate contextRef="Duration_01May2012_30Apr2013">2013-04-29</dei:DocumentCreationDate>
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  <rr:ObjectivePrimaryTextBlock contextRef="Duration_01May2012_30Apr2013S000010983_Member">The Portfolio seeks long-term capital appreciation through investment primarily in large-cap U.S. common stocks that are trading at prices below what are believed to be their intrinsic value, in accordance with the Portfolio&amp;#8217;s corporate responsibility standards and strategies. This objective may be changed by the Portfolio&amp;#8217;s Board of Directors without shareholder approval.</rr:ObjectivePrimaryTextBlock>
  <rr:ObjectiveHeading contextRef="Duration_01May2012_30Apr2013S000010983_Member">&lt;b&gt;INVESTMENT OBJECTIVE&lt;/b&gt;</rr:ObjectiveHeading>
  <rr:PortfolioTurnoverTextBlock contextRef="Duration_01May2012_30Apr2013S000010983_Member">The Portfolio pays transaction costs, such as commissions, when it buys and sells securities (&amp;#8220;turns over&amp;#8221; its portfolio). A higher portfolio turnover rate may indicate higher transaction costs. These costs, which are not reflected in annual fund operating expenses or in the &amp;#8220;Example&amp;#8221;, affect the Portfolio&amp;#8217;s performance. During the most recent fiscal year, the Portfolio&amp;#8217;s portfolio turnover rate was 51% of its portfolio&amp;#8217;s average value.</rr:PortfolioTurnoverTextBlock>
  <rr:ObjectivePrimaryTextBlock contextRef="Duration_01May2012_30Apr2013S000010992_MemberClassI_Member">The Portfolio seeks investment results that correspond to the total return performance of U.S. common stocks, as represented by the S&amp;amp;P MidCap 400 Index. This objective may be changed by the Portfolio&amp;#8217;s Board of Directors without shareholder approval.</rr:ObjectivePrimaryTextBlock>
  <rr:ObjectivePrimaryTextBlock contextRef="Duration_01May2012_30Apr2013S000010995_MemberClassI_Member">The Portfolio seeks investment results that correspond to the investment performance of U.S. common stocks, as represented by the Russell 2000 Index. This objective may be changed by the Portfolio&amp;#8217;s Board of Directors without shareholder approval.</rr:ObjectivePrimaryTextBlock>
  <rr:ExpenseNarrativeTextBlock contextRef="Duration_01May2012_30Apr2013S000010995_MemberClassI_Member">This table describes the fees and expenses that you may pay if you invest in shares of the Portfolio.&lt;br/&gt;&lt;br/&gt;The table and the following example do not reflect fees and charges imposed under the variable annuity contracts and life insurance policies (each a &amp;#8220;Policy&amp;#8221;) through which an investment may be made. If those fees and charges were included, costs would be higher. Please consult the prospectus for your Policy for information regarding those fees and charges.</rr:ExpenseNarrativeTextBlock>
  <rr:PortfolioTurnoverTextBlock contextRef="Duration_01May2012_30Apr2013S000010992_MemberClassI_Member">The Portfolio pays transaction costs, such as commissions, when it buys and sells securities (&amp;#8220;turns over&amp;#8221; its portfolio). A higher portfolio turnover rate may indicate higher transaction costs. These costs, which are not reflected in annual fund operating expenses or in the &amp;#8220;Example&amp;#8221;, affect the Portfolio&amp;#8217;s performance. During the most recent fiscal year, the Portfolio&amp;#8217;s portfolio turnover rate was 10% of its portfolio&amp;#8217;s average value.</rr:PortfolioTurnoverTextBlock>
  <rr:ObjectivePrimaryTextBlock contextRef="Duration_01May2012_30Apr2013S000010991_Member">The Portfolio seeks investment results that correspond to the total return performance of U.S. common stocks, as represented by the S&amp;amp;P 500 Index. This objective may be changed by the Portfolio&amp;#8217;s Board of Directors without shareholder approval. &lt;br /&gt;&lt;br /&gt;</rr:ObjectivePrimaryTextBlock>
  <rr:PortfolioTurnoverTextBlock contextRef="Duration_01May2012_30Apr2013S000010995_MemberClassI_Member">The Portfolio pays transaction costs, such as commissions, when it buys and sells securities (&amp;#8220;turns over&amp;#8221; its portfolio). A higher portfolio turnover rate may indicate higher transaction costs. These costs, which are not reflected in annual fund operating expenses or in the &amp;#8220;Example&amp;#8221;, affect the Portfolio&amp;#8217;s performance. During the most recent fiscal year, the Portfolio&amp;#8217;s portfolio turnover rate was 13% of its portfolio&amp;#8217;s average value.</rr:PortfolioTurnoverTextBlock>
  <rr:ObjectivePrimaryTextBlock contextRef="Duration_01May2012_30Apr2013S000010994_Member">The Portfolio seeks investment results that correspond to the investment performance of U.S. common stocks, as represented by the NASDAQ-100 Index. This objective may be changed by the Portfolio&amp;#8217;s Board of Directors without shareholder approval.</rr:ObjectivePrimaryTextBlock>
  <rr:PortfolioTurnoverTextBlock contextRef="Duration_01May2012_30Apr2013S000010994_Member">The Portfolio pays transaction costs, such as commissions, when it buys and sells securities (&amp;#8220;turns over&amp;#8221; its portfolio). A higher portfolio turnover rate may indicate higher transaction costs. These costs, which are not reflected in annual fund operating expenses or in the &amp;#8220;Example&amp;#8221;, affect the Portfolio&amp;#8217;s performance. During the most recent fiscal year, the Portfolio&amp;#8217;s portfolio turnover rate was 17% of its portfolio&amp;#8217;s average value.</rr:PortfolioTurnoverTextBlock>
  <rr:PortfolioTurnoverTextBlock contextRef="Duration_01May2012_30Apr2013S000010991_Member">The Portfolio pays transaction costs, such as commissions, when it buys and sells securities (&amp;#8220;turns over&amp;#8221; its portfolio). A higher portfolio turnover rate may indicate higher transaction costs. These costs, which are not reflected in annual fund operating expenses or in the &amp;#8220;Example&amp;#8221;, affect the Portfolio&amp;#8217;s performance. During the most recent fiscal year, the Portfolio&amp;#8217;s portfolio turnover rate was 5% of its portfolio&amp;#8217;s average value. &lt;br /&gt;&lt;br /&gt;</rr:PortfolioTurnoverTextBlock>
  <rr:ExpenseHeading contextRef="Duration_01May2012_30Apr2013S000010983_Member">&lt;b&gt;FEES AND EXPENSES OF THE PORTFOLIO&lt;/b&gt;</rr:ExpenseHeading>
  <rr:ExpenseNarrativeTextBlock contextRef="Duration_01May2012_30Apr2013S000010983_Member">This table describes the fees and expenses that you may pay if you invest in shares of the Portfolio.&lt;br/&gt;&lt;br/&gt;The table and the following example do not reflect fees and charges imposed under the variable annuity contracts and life insurance policies (each a &amp;#8220;Policy&amp;#8221;) through which an investment may be made. If those fees and charges were included, costs would be higher. Please consult the prospectus for your Policy for information regarding those fees and charges.</rr:ExpenseNarrativeTextBlock>
  <rr:ShareholderFeesCaption contextRef="Duration_01May2012_30Apr2013S000010983_Member">&lt;b&gt;Shareholder Fees&lt;/b&gt; (fees paid directly from your investment)</rr:ShareholderFeesCaption>
  <rr:OperatingExpensesCaption contextRef="Duration_01May2012_30Apr2013S000010983_Member">&lt;b&gt;Annual Fund Operating Expenses&lt;/b&gt; (expenses that you pay each year as a %&lt;br/&gt;of the value of your investment)</rr:OperatingExpensesCaption>
  <rr:ExpenseExampleHeading contextRef="Duration_01May2012_30Apr2013S000010983_Member">&lt;b&gt;Example&lt;/b&gt;</rr:ExpenseExampleHeading>
  <rr:ExpenseExampleNarrativeTextBlock contextRef="Duration_01May2012_30Apr2013S000010983_Member">This example is intended to help you compare the cost of investing in the Portfolio with the cost of investing in other mutual funds. The example assumes that:&lt;ul type="square"&gt;&lt;li style="margin-left:-20px"&gt;you invest $10,000 in the Portfolio for the time periods indicated; &lt;/li&gt;&lt;li style="margin-left:-20px"&gt;your investment has a 5% return each year;&lt;/li&gt;&lt;li style="margin-left:-20px"&gt;the Portfolio&amp;#8217;s operating expenses remain the same; and &lt;/li&gt;&lt;li style="margin-left:-20px"&gt;any Calvert expense limitation is in effect for the period indicated in the fee table above.&lt;/li&gt;&lt;/ul&gt;Although your actual costs may be higher or lower, under these assumptions your costs would be:</rr:ExpenseExampleNarrativeTextBlock>
  <rr:PortfolioTurnoverHeading contextRef="Duration_01May2012_30Apr2013S000010983_Member">&lt;b&gt;Portfolio Turnover &lt;/b&gt;</rr:PortfolioTurnoverHeading>
  <rr:StrategyHeading contextRef="Duration_01May2012_30Apr2013S000010983_Member">&lt;b&gt;INVESTMENTS, RISKS AND PERFORMANCE &lt;br/&gt;&lt;br/&gt;Principal Investment Strategies&lt;/b&gt;</rr:StrategyHeading>
  <rr:StrategyNarrativeTextBlock contextRef="Duration_01May2012_30Apr2013S000010983_Member">The Portfolio offers opportunities for long-term growth of capital through investments in large-cap company equity securities that the portfolio manager believes are undervalued. The Portfolio normally invests at least 80% of its assets, including borrowings for investment purposes, in the common stocks of large-cap companies. The Portfolio will provide shareholders with at least 60 days' notice before changing this 80% policy. The Portfolio defines large-cap companies as those within the range of market capitalizations of the Russell 1000 Value Index. As of December 31, 2012, the market capitalization of the Russell 1000 Value Index companies ranged from $317 million to $395 billion with a weighted median level of $35 billion and a weighted average level of $88.9 billion. The Portfolio normally seeks to have a weighted average market capitalization of at least $10 billion.&lt;br/&gt;&lt;br/&gt;The Russell 1000 Value Index is reconstituted annually. The annual index reconstitution and the general nature of an index mean that the constitution of the Russell 1000 Value Index will vary due to market changes, which can also affect the market capitalization range. Changes to the constitution and market capitalization of the Russell 1000 Value Index will cause the Advisor's universe of stocks and range of market capitalizations to change accordingly.&lt;br/&gt;&lt;br/&gt;Although primarily investing in large cap U.S. companies, the Portfolio may also invest in mid-cap and small-cap companies. The Portfolio may not invest more than 25% of its net assets in foreign securities.&lt;br/&gt;&lt;br/&gt;The Advisor seeks to identify common stocks of companies it believes are significantly undervalued compared to their perceived worth or prospects, historical valuations or the general market level of valuation. Value companies tend to have stock prices that are low relative to their earnings, dividends, assets or other financial measures. They may include companies which are temporarily out of favor with the market or which may have experienced adverse business developments but which have the potential for growth.&lt;br/&gt;&lt;br/&gt;In selecting securities for the Portfolio, the Advisor primarily uses a bottom-up approach focused on fundamental analysis of issuers in a number of different sectors and industries, in light of the issuers' current financial condition and industry position, as well as market, economic, political and regulatory conditions. Factors considered in assessing a company's valuation and prospects may include analysis of earnings, assets, cash flows, allocation of capital, favorable supply/demand conditions for key products, development of new products or businesses, competitive position in the marketplace, and quality of management.&lt;br/&gt;&lt;br/&gt;Sustainable and Responsible Investing. The Portfolio seeks to invest in a wide range of companies and other enterprises that demonstrate varying degrees of commitment and progress toward addressing key corporate responsibility and sustainability challenges. The Portfolio may invest in companies which already demonstrate leadership on environmental, social and governance issues relevant to their industries, as well as in companies which have yet to make significant progress on such issues but have the potential to do so. Enhanced engagement will encourage selected companies in the portfolio to address issues where sufficient commitment is lacking, or reinforce progress that may be underway.&lt;br/&gt;&lt;br/&gt;The Portfolio has threshold responsibility standards with respect to tobacco, weapons and human rights, which it applies in determining whether a security qualifies as an investment for the Portfolio. Investments are first selected for financial soundness and then evaluated according to these sustainability and corporate responsibility standards. Investments must be consistent with the Portfolio's current financial criteria and threshold responsibility standards, the application of which is in the economic interest of the Portfolio and its shareholders.</rr:StrategyNarrativeTextBlock>
  <rr:RiskHeading contextRef="Duration_01May2012_30Apr2013S000010983_Member">&lt;b&gt;Principal Risks&lt;/b&gt;</rr:RiskHeading>
  <rr:RiskNarrativeTextBlock contextRef="Duration_01May2012_30Apr2013S000010983_Member">You could lose money on your investment in the Portfolio, or the Portfolio could underperform, because of the risks described below. An investment in the Portfolio is not a bank deposit and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.&lt;br/&gt;&lt;br/&gt;Management Risk. Individual investments of the Portfolio may not perform as expected, and the portfolio management practices may not achieve the desired result.&lt;br/&gt;&lt;br/&gt;Stock Market Risk. The market prices of stocks held by the Portfolio may fall.&lt;br/&gt;&lt;br/&gt;Common Stock Risk. Although common stocks have a history of long-term growth in value, their prices fluctuate based on changes in a company's financial condition, on overall market and economic conditions, and on investors' perception of a company's well-being.&lt;br/&gt;&lt;br/&gt;Large-Cap Company Risk. Large-cap companies may be unable to respond quickly to new competitive challenges such as changes in technology, and also may not be able to attain the high growth rate of successful smaller companies, especially during extended periods of economic expansion.&lt;br/&gt;&lt;br/&gt;Small-Cap and Mid-Cap Company Risk. Prices of small-cap and mid-cap stocks can be more volatile than those of larger, more established companies. Small-cap and mid-cap companies are more likely to have more limited product lines, fewer capital resources and less depth of management than larger companies.&lt;br/&gt;&lt;br/&gt;Value Company Risk. Value stocks may perform differently from the market as a whole, which may not recognize a security's intrinsic value for a long time. The value-oriented investing approach may fall out of favor with investors from time to time, during which the Portfolio may underperform other funds using different investment approaches.&lt;br/&gt;&lt;br/&gt;Valuation Risk. A stock judged to be undervalued by the Advisor may actually be appropriately priced, and it may not appreciate as anticipated.&lt;br/&gt;&lt;br/&gt;Foreign Securities Risk. Investing in foreign securities involves additional risks relating to political, social, and economic developments abroad. Other risks result from differences between regulations that apply to U.S. and foreign issuers and markets, and the potential for foreign markets to be less liquid and more volatile than U.S. markets.&lt;br/&gt;&lt;br/&gt;Foreign Currency Risk. Securities that trade or are denominated in currencies other than the U.S. dollar may be adversely affected by fluctuations in currency exchange rates. When the U.S. dollar strengthens relative to a foreign currency, the U.S. dollar value of an investment denominated in that currency will typically fall.</rr:RiskNarrativeTextBlock>
  <rr:BarChartAndPerformanceTableHeading contextRef="Duration_01May2012_30Apr2013S000010983_Member">&lt;b&gt;Performance&lt;/b&gt;</rr:BarChartAndPerformanceTableHeading>
  <rr:PerformanceNarrativeTextBlock contextRef="Duration_01May2012_30Apr2013S000010983_Member">The following bar chart and table show the Portfolio&amp;#8217;s annual returns and its long-term performance, which give some indication of the risks of investing in the Portfolio. The bar chart shows how the performance has varied from year to year. The table compares the Portfolio&amp;#8217;s performance over time with that of a benchmark index and a peer average.&lt;br/&gt;&lt;br/&gt; The Portfolio&amp;#8217;s past performance does not necessarily indicate how the Portfolio will perform in the future. For updated performance information, visit www.calvert.com.&lt;br/&gt;&lt;br/&gt;The returns shown do not reflect fees and charges imposed under the variable annuity contracts and life insurance policies through which an investment may be made. If those fees and charges were included, they would reduce these returns.</rr:PerformanceNarrativeTextBlock>
  <rr:BarChartHeading contextRef="Duration_01May2012_30Apr2013S000010983_Member">&lt;b&gt;Calendar Year Total Returns&lt;/b&gt;</rr:BarChartHeading>
  <rr:PerformanceTableHeading contextRef="Duration_01May2012_30Apr2013S000010983_Member">&lt;b&gt;Average Annual Total Returns&lt;br/&gt;(as of 12/31/12)&lt;/b&gt;</rr:PerformanceTableHeading>
  <rr:MaximumSalesChargeImposedOnPurchasesOverOfferingPrice decimals="4" contextRef="Duration_01May2012_30Apr2013S000010983_MemberC000030357_Member" unitRef="pure">0</rr:MaximumSalesChargeImposedOnPurchasesOverOfferingPrice>
  <rr:MaximumDeferredSalesChargeOverOfferingPrice decimals="4" contextRef="Duration_01May2012_30Apr2013S000010983_MemberC000030357_Member" unitRef="pure">0</rr:MaximumDeferredSalesChargeOverOfferingPrice>
  <rr:ManagementFeesOverAssets decimals="4" contextRef="Duration_01May2012_30Apr2013S000010983_MemberC000030357_Member" unitRef="pure">0.0074</rr:ManagementFeesOverAssets>
  <rr:OtherExpensesOverAssets decimals="4" contextRef="Duration_01May2012_30Apr2013S000010983_MemberC000030357_Member" unitRef="pure">0.0011</rr:OtherExpensesOverAssets>
  <rr:ExpensesOverAssets decimals="4" contextRef="Duration_01May2012_30Apr2013S000010983_MemberC000030357_Member" unitRef="pure">0.0085</rr:ExpensesOverAssets>
  <rr:FeeWaiverOrReimbursementOverAssets id="Item_2" decimals="4" contextRef="Duration_01May2012_30Apr2013S000010983_MemberC000030357_Member" unitRef="pure">-0.0007</rr:FeeWaiverOrReimbursementOverAssets>
  <rr:NetExpensesOverAssets decimals="4" contextRef="Duration_01May2012_30Apr2013S000010983_MemberC000030357_Member" unitRef="pure">0.0078</rr:NetExpensesOverAssets>
  <rr:ExpenseExampleYear01 decimals="INF" contextRef="Duration_01May2012_30Apr2013S000010983_MemberC000030357_Member" unitRef="USD">80</rr:ExpenseExampleYear01>
  <rr:RiskReturnHeading contextRef="Duration_01May2012_30Apr2013S000015005_Member">&lt;b&gt;CALVERT VP INFLATION PROTECTED PLUS PORTFOLIO&lt;/b&gt;</rr:RiskReturnHeading>
  <rr:ExpenseExampleYear03 decimals="INF" contextRef="Duration_01May2012_30Apr2013S000010983_MemberC000030357_Member" unitRef="USD">264</rr:ExpenseExampleYear03>
  <rr:ExpenseExampleYear05 decimals="INF" contextRef="Duration_01May2012_30Apr2013S000010983_MemberC000030357_Member" unitRef="USD">465</rr:ExpenseExampleYear05>
  <rr:ObjectiveHeading contextRef="Duration_01May2012_30Apr2013S000015005_Member">&lt;b&gt;INVESTMENT OBJECTIVE&lt;/b&gt;</rr:ObjectiveHeading>
  <rr:ExpenseExampleYear10 decimals="INF" contextRef="Duration_01May2012_30Apr2013S000010983_MemberC000030357_Member" unitRef="USD">1043</rr:ExpenseExampleYear10>
  <rr:ObjectivePrimaryTextBlock contextRef="Duration_01May2012_30Apr2013S000015005_Member">The Portfolio seeks to maximize real levels of current income consistent with reasonable investment risk, by investing primarily in inflation adjusted fixed income securities. This objective may be changed by the Portfolio&amp;#8217;s Board of Directors without shareholder approval.</rr:ObjectivePrimaryTextBlock>
  <rr:ExpenseHeading contextRef="Duration_01May2012_30Apr2013S000015005_Member">&lt;b&gt;FEES AND EXPENSES OF THE PORTFOLIO&lt;/b&gt;</rr:ExpenseHeading>
  <rr:ExpenseNarrativeTextBlock contextRef="Duration_01May2012_30Apr2013S000015005_Member">This table describes the fees and expenses that you may pay if you invest in shares of the Portfolio.&lt;br/&gt;&lt;br/&gt; The table and the following example do not reflect fees and charges imposed under the variable annuity contracts and life insurance policies (each a &amp;#8220;Policy&amp;#8221;) through which an investment may be made. If those fees and charges were included, costs would be higher. Please consult the prospectus for your Policy for information regarding those fees and charges.</rr:ExpenseNarrativeTextBlock>
  <rr:ShareholderFeesCaption contextRef="Duration_01May2012_30Apr2013S000015005_Member">&lt;b&gt;Shareholder Fees&lt;/b&gt; (fees paid directly from your investment)</rr:ShareholderFeesCaption>
  <rr:OperatingExpensesCaption contextRef="Duration_01May2012_30Apr2013S000015005_Member">&lt;b&gt;Annual Fund Operating Expenses &lt;/b&gt;(expenses that you pay each year as&lt;br/&gt;a % of the value of your investment)</rr:OperatingExpensesCaption>
  <rr:ExpenseExampleHeading contextRef="Duration_01May2012_30Apr2013S000015005_Member">&lt;b&gt;Example&lt;/b&gt;</rr:ExpenseExampleHeading>
  <rr:RiskReturnHeading contextRef="Duration_01May2012_30Apr2013S000010995_MemberClassI_Member">&lt;b&gt;CALVERT VP RUSSELL 2000 SMALL CAP INDEX PORTFOLIO&lt;br/&gt;&lt;br/&gt;Class: I&lt;/b&gt;</rr:RiskReturnHeading>
  <rr:ObjectiveHeading contextRef="Duration_01May2012_30Apr2013S000010995_MemberClassI_Member">&lt;b&gt;INVESTMENT OBJECTIVE&lt;/b&gt;</rr:ObjectiveHeading>
  <rr:ExpenseHeading contextRef="Duration_01May2012_30Apr2013S000010995_MemberClassI_Member">&lt;b&gt;FEES AND EXPENSES OF THE PORTFOLIO&lt;/b&gt;</rr:ExpenseHeading>
  <rr:RiskReturnHeading contextRef="Duration_01May2012_30Apr2013S000010991_Member">&lt;b&gt;CALVERT VP S&amp;P 500 INDEX PORTFOLIO&lt;/b&gt;</rr:RiskReturnHeading>
  <rr:ObjectiveHeading contextRef="Duration_01May2012_30Apr2013S000010991_Member">&lt;b&gt;INVESTMENT OBJECTIVE&lt;/b&gt;</rr:ObjectiveHeading>
  <rr:ShareholderFeesCaption contextRef="Duration_01May2012_30Apr2013S000010995_MemberClassI_Member">&lt;b&gt;Shareholder Fees&lt;/b&gt; (fees paid directly from your investment)</rr:ShareholderFeesCaption>
  <rr:OperatingExpensesCaption contextRef="Duration_01May2012_30Apr2013S000010995_MemberClassI_Member">&lt;b&gt;Annual Fund Operating Expenses&lt;/b&gt; (expenses that you pay each year as&lt;br/&gt;a % of the value of your investment)</rr:OperatingExpensesCaption>
  <rr:ExpenseHeading contextRef="Duration_01May2012_30Apr2013S000010991_Member">&lt;b&gt;FEES AND EXPENSES OF THE PORTFOLIO&lt;/b&gt;</rr:ExpenseHeading>
  <rr:PortfolioTurnoverHeading contextRef="Duration_01May2012_30Apr2013S000010995_MemberClassI_Member">&lt;b&gt;Portfolio Turnover&lt;/b&gt;</rr:PortfolioTurnoverHeading>
  <rr:ExpenseExampleNarrativeTextBlock contextRef="Duration_01May2012_30Apr2013S000015005_Member">This example is intended to help you compare the cost of investing in the Portfolio with the cost of investing in other mutual funds. The example assumes that:&lt;ul type="square"&gt;&lt;li style="margin-left:-20px"&gt;you invest $10,000 in the Portfolio for the time periods indicated;&lt;/li&gt;&lt;li style="margin-left:-20px"&gt;your investment has a 5% return each year;&lt;/li&gt;&lt;li style="margin-left:-20px"&gt;the Portfolio&amp;#8217;s operating expenses remain the same; and&lt;/li&gt;&lt;li style="margin-left:-20px"&gt;any Calvert expense limitation is in effect for the period indicated in the fee table above.&lt;/li&gt;&lt;/ul&gt;Although your actual costs may be higher or lower, under these assumptions your costs would be:</rr:ExpenseExampleNarrativeTextBlock>
  <rr:ExpenseExampleHeading contextRef="Duration_01May2012_30Apr2013S000010995_MemberClassI_Member">&lt;b&gt;Example&lt;/b&gt;</rr:ExpenseExampleHeading>
  <rr:ExpenseExampleNarrativeTextBlock contextRef="Duration_01May2012_30Apr2013S000010995_MemberClassI_Member">This example is intended to help you compare the cost of investing in the Portfolio with the cost of investing in other mutual funds. The example assumes that: &lt;ul type="square"&gt;&lt;li style="margin-left:-20px"&gt;you invest $10,000 in the Portfolio for the time periods indicated;&lt;/li&gt;&lt;li style="margin-left:-20px"&gt;your investment has a 5% return each year;&lt;/li&gt;&lt;li style="margin-left:-20px"&gt;the Portfolio&amp;#8217;s operating expenses remain the same; and&lt;/li&gt;&lt;li style="margin-left:-20px"&gt;any Calvert expense limitation is in effect for the period indicated in the fee table above.&lt;/li&gt;&lt;/ul&gt;Although your actual costs may be higher or lower, under these assumptions your costs would be:</rr:ExpenseExampleNarrativeTextBlock>
  <rr:ExpenseNarrativeTextBlock contextRef="Duration_01May2012_30Apr2013S000010991_Member">This table describes the fees and expenses that you may pay if you invest in shares of the Portfolio.&lt;br/&gt;&lt;br/&gt;The table and the following example do not reflect fees and charges imposed under the variable annuity contracts and life insurance policies (each a &amp;#8220;Policy&amp;#8221;) through which an investment may be made. If those fees and charges were included, costs would be higher. Please consult the prospectus for your Policy for information regarding those fees and charges.</rr:ExpenseNarrativeTextBlock>
  <rr:StrategyHeading contextRef="Duration_01May2012_30Apr2013S000010995_MemberClassI_Member">&lt;b&gt;INVESTMENTS, RISKS AND PERFORMANCE&lt;br/&gt;&lt;br/&gt;Principal Investment Strategies&lt;/b&gt;</rr:StrategyHeading>
  <rr:StrategyNarrativeTextBlock contextRef="Duration_01May2012_30Apr2013S000010995_MemberClassI_Member">The Portfolio seeks to substantially replicate the total return of the securities comprising the Russell 2000 Index, taking into consideration redemptions, sales of additional shares, and other adjustments described below. The Russell 2000 Index is an unmanaged index of common stocks comprised of approximately 2,000 common stocks of smaller U.S. companies that aims to include approximately 10% of the total market capitalization of the broader Russell 3000 Index. As of December 31, 2012, the market capitalization of the Russell 2000 Index companies ranged from $28 million to $4.7 billion with a weighted median level of $1.2 billion and a weighted average level of $1.3 billion. The Russell 2000 Index is capitalization-weighted, meaning that companies with larger market capitalizations will contribute more to the Index's value than companies whose securities have smaller market capitalizations.&lt;br/&gt;&lt;br/&gt;The Portfolio will invest primarily in common stocks of the companies that comprise the Russell 2000 Index. The Portfolio may also invest in Russell 2000 iShares&amp;#174; or other investment companies that provide the same exposure to the Russell 2000 Index. Russell 2000 iShares&amp;#174; are units of beneficial interest in a unit investment trust, representing proportionate undivided interests in a portfolio of securities in substantially the same weighting as the common stocks that comprise the Russell 2000 Index. Derivatives such as Russell 2000 Index options and futures, and options on such futures (or S&amp;#38;P MidCap 400 or S&amp;#38;P 500 Index options and futures, and options on such futures, if, in the opinion of the Advisor or Subadvisor, it is not practical to invest in Russell 2000 index options or futures, or options on such futures, at a particular time due to liquidity or price considerations), may also be held by the Portfolio incidental to its main investment strategy in order to invest uncommitted cash balances, to maintain liquidity to meet shareholder redemptions, or minimize trading costs. The Portfolio may also sell covered calls on futures contracts or individual securities held in the Portfolio.&lt;br/&gt;&lt;br/&gt; Under normal circumstances, the Portfolio will invest at least 80% of its net assets in investments with economic characteristics similar to small cap stocks as represented in the Russell 2000 Index. The Portfolio will provide shareholders with at least 60 days' notice before changing this 80% policy. While not required, the Portfolio will generally sell securities that the Index manager removes from the Index. Although the Subadvisor will attempt to invest and maintain as much of the Portfolio's assets as is practical in stocks included among the Russell 2000 Index and futures contracts and options relating thereto under normal market conditions, a portion of the Portfolio may be invested in money market instruments pending investment or to meet redemption requests or other needs for liquid assets.</rr:StrategyNarrativeTextBlock>
  <rr:RiskHeading contextRef="Duration_01May2012_30Apr2013S000010995_MemberClassI_Member">&lt;b&gt;Principal Risks&lt;/b&gt;</rr:RiskHeading>
  <rr:PortfolioTurnoverHeading contextRef="Duration_01May2012_30Apr2013S000015005_Member">&lt;b&gt;Portfolio Turnover&lt;/b&gt;</rr:PortfolioTurnoverHeading>
  <rr:RiskNarrativeTextBlock contextRef="Duration_01May2012_30Apr2013S000010995_MemberClassI_Member">You could lose money on your investment in the Portfolio, or the Portfolio could underperform, because of the risks described below. An investment in the Portfolio is not a bank deposit and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.&lt;br/&gt;&lt;br/&gt;Management Risk. Individual investments of the Portfolio may not perform as expected, and the portfolio management practices may not achieve the desired result.&lt;br/&gt;&lt;br/&gt; Stock Market Risk. The market prices of stocks held by the Portfolio may fall.&lt;br/&gt;&lt;br/&gt; Index Tracking Risk. An index fund has operating expenses; a market index does not. The Portfolio, while expected to track its target index as closely as possible, will not be able to match the performance of the index exactly.&lt;br/&gt;&lt;br/&gt; Common Stock Risk. Although common stocks have a history of long-term growth in value, their prices fluctuate based on changes in a company's financial condition, on overall market and economic conditions, and on investors' perception of a company's well-being.&lt;br/&gt;&lt;br/&gt; Small-Cap Company Risk. Prices of small-cap stocks can be more volatile than those of larger, more established companies. Small-cap companies are more likely to have more limited product lines, fewer capital resources and less depth of management than larger companies.&lt;br/&gt;&lt;br/&gt; Investments in Other Investment Companies. The risks of investing in other investment companies typically reflect the risks of the types of securities in which those investment companies invest.&lt;br/&gt;&lt;br/&gt; When the Portfolio invests in another investment company, shareholders of the Portfolio bear their proportionate share of the other investment company's fees and expenses as well as their share of the Portfolio's fees and expenses.&lt;br/&gt;&lt;br/&gt; Stock Index Futures and Options Risk. Using stock index futures and options may increase the Portfolio's volatility and may involve a small cash investment relative to the magnitude of risk assumed. If changes in a derivative's value do not correspond to changes in the value of the Portfolio's other investments, the Portfolio may not fully benefit from or could lose money on the derivative position. Derivatives can involve risk of loss if the party who issued the derivative defaults on its obligation. Derivatives may also be less liquid and more difficult to value.</rr:RiskNarrativeTextBlock>
  <rr:BarChartAndPerformanceTableHeading contextRef="Duration_01May2012_30Apr2013S000010995_MemberClassI_Member">&lt;b&gt;Performance&lt;/b&gt;</rr:BarChartAndPerformanceTableHeading>
  <rr:PortfolioTurnoverTextBlock contextRef="Duration_01May2012_30Apr2013S000015005_Member">The Portfolio pays transaction costs, such as commissions, when it buys and sells securities (&amp;#8220;turns over&amp;#8221; its portfolio). A higher portfolio turnover rate may indicate higher transaction costs. These costs, which are not reflected in annual fund operating expenses or in the &amp;#8220;Example&amp;#8221;, affect the Portfolio&amp;#8217;s performance. During the most recent fiscal year, the Portfolio&amp;#8217;s portfolio turnover rate was 24% of its portfolio&amp;#8217;s average value.</rr:PortfolioTurnoverTextBlock>
  <rr:ShareholderFeesCaption contextRef="Duration_01May2012_30Apr2013S000010991_Member">&lt;b&gt;Shareholder Fees&lt;/b&gt; (fees paid directly from your investment)</rr:ShareholderFeesCaption>
  <rr:PerformanceNarrativeTextBlock contextRef="Duration_01May2012_30Apr2013S000010995_MemberClassI_Member">The following bar chart and table show the Portfolio&amp;#8217;s annual returns and its long-term performance, which give some indication of the risks of investing in the Portfolio. The bar chart shows how the performance has varied from year to year. The table compares the Portfolio&amp;#8217;s performance over time with that of a benchmark index and a peer average.&lt;br/&gt;&lt;br/&gt;The Portfolio&amp;#8217;s past performance does not necessarily indicate how the Portfolio will perform in the future. For updated performance information, visit www.calvert.com.&lt;br/&gt;&lt;br/&gt;The returns shown do not reflect fees and charges imposed under the variable annuity contracts and life insurance policies through which an investment may be made. If those fees and charges were included, they would reduce these returns.</rr:PerformanceNarrativeTextBlock>
  <rr:BarChartHeading contextRef="Duration_01May2012_30Apr2013S000010995_MemberClassI_Member">&lt;b&gt;Calendar Year Total Returns&lt;/b&gt;</rr:BarChartHeading>
  <rr:OperatingExpensesCaption contextRef="Duration_01May2012_30Apr2013S000010991_Member">&lt;b&gt;Annual Fund Operating Expenses&lt;/b&gt; (expenses that you pay each year as&lt;br/&gt;a % of the value of your investment)</rr:OperatingExpensesCaption>
  <rr:PerformanceTableHeading contextRef="Duration_01May2012_30Apr2013S000010995_MemberClassI_Member">&lt;b&gt;Average Annual Total Returns&lt;br/&gt;(as of 12/31/12)&lt;/b&gt;</rr:PerformanceTableHeading>
  <rr:ExpenseExampleHeading contextRef="Duration_01May2012_30Apr2013S000010991_Member">&lt;b&gt;Example&lt;/b&gt;</rr:ExpenseExampleHeading>
  <rr:ExpenseExampleNarrativeTextBlock contextRef="Duration_01May2012_30Apr2013S000010991_Member">This example is intended to help you compare the cost of investing in the Portfolio with the cost of investing in other mutual funds. The example assumes that:&lt;ul type="square"&gt;&lt;li style="margin-left:-20px"&gt;you invest $10,000 in the Portfolio for the time periods indicated;&lt;/li&gt;&lt;li style="margin-left:-20px"&gt;your investment has a 5% return each year;&lt;/li&gt;&lt;li style="margin-left:-20px"&gt;the Portfolio&amp;#8217;s operating expenses remain the same; and&lt;/li&gt;&lt;li style="margin-left:-20px"&gt;any Calvert expense limitation is in effect for the period indicated in the fee table above.&lt;/li&gt;&lt;/ul&gt;Although your actual costs may be higher or lower, under these assumptions your costs would be:</rr:ExpenseExampleNarrativeTextBlock>
  <rr:PortfolioTurnoverHeading contextRef="Duration_01May2012_30Apr2013S000010991_Member">&lt;b&gt;Portfolio Turnover &lt;/b&gt;</rr:PortfolioTurnoverHeading>
  <rr:RiskReturnHeading contextRef="Duration_01May2012_30Apr2013S000010992_MemberClassI_Member">&lt;b&gt;CALVERT VP S&amp;P MIDCAP 400 INDEX PORTFOLIO&lt;br/&gt;&lt;br/&gt;Class: I&lt;/b&gt;</rr:RiskReturnHeading>
  <rr:ObjectiveHeading contextRef="Duration_01May2012_30Apr2013S000010992_MemberClassI_Member">&lt;b&gt;INVESTMENT OBJECTIVE&lt;/b&gt;</rr:ObjectiveHeading>
  <rr:AnnualReturn2003 decimals="4" contextRef="Duration_01May2012_30Apr2013S000010983_MemberC000030357_Member" unitRef="pure">0.3556</rr:AnnualReturn2003>
  <rr:ExpenseNarrativeTextBlock contextRef="Duration_01May2012_30Apr2013S000010992_MemberClassI_Member">This table describes the fees and expenses that you may pay if you invest in shares of the Portfolio. &lt;br/&gt;&lt;br/&gt;The table and the following example do not reflect fees and charges imposed under the variable annuity contracts and life insurance policies (each a &amp;#8220;Policy&amp;#8221;) through which an investment may be made. If those fees and charges were included, costs would be higher. Please consult the prospectus for your Policy for information regarding those fees and charges.</rr:ExpenseNarrativeTextBlock>
  <rr:StrategyHeading contextRef="Duration_01May2012_30Apr2013S000010991_Member">&lt;b&gt;INVESTMENTS, RISKS AND PERFORMANCE &lt;/b&gt;&lt;br/&gt;&lt;br/&gt;&lt;b&gt;Principal Investment Strategies&lt;/b&gt;</rr:StrategyHeading>
  <rr:AnnualReturn2004 decimals="4" contextRef="Duration_01May2012_30Apr2013S000010983_MemberC000030357_Member" unitRef="pure">0.1477</rr:AnnualReturn2004>
  <rr:ExpenseHeading contextRef="Duration_01May2012_30Apr2013S000010992_MemberClassI_Member">&lt;b&gt;FEES AND EXPENSES OF THE PORTFOLIO&lt;/b&gt;</rr:ExpenseHeading>
  <rr:ShareholderFeesCaption contextRef="Duration_01May2012_30Apr2013S000010992_MemberClassI_Member">&lt;b&gt;Shareholder Fees&lt;/b&gt; (fees paid directly from your investment)</rr:ShareholderFeesCaption>
  <rr:StrategyNarrativeTextBlock contextRef="Duration_01May2012_30Apr2013S000010991_Member">The Portfolio seeks to substantially replicate the total return of the securities comprising the S&amp;#38;P 500 Index, taking into consideration redemptions, sales of additional shares, and other adjustments described below. The S&amp;#38;P 500 Index is an unmanaged index of common stocks comprised of 500 large capitalization common stocks of U.S. companies that aims to include the top 75% of the value of the domestic equity markets. As of December 31, 2012, the market capitalization of the S&amp;#38;P 500 Index companies ranged from $1.63 billion to $500 billion with a weighted median level of $56.8 billion and a weighted average level of $106.1 billion. The S&amp;#38;P 500 Index is capitalization-weighted, meaning that companies with larger market capitalizations will contribute more to the Index's value than companies with smaller market capitalizations.&lt;br/&gt;&lt;br/&gt;The Portfolio will invest primarily in common stocks of the companies that comprise the S&amp;#38;P 500 Index. The Portfolio may also invest in Standard &amp;#38; Poor's Depositary Receipts&lt;sup&gt;&amp;#174; &lt;/sup&gt;("SPDRs&lt;sup&gt;&amp;#174;&lt;/sup&gt;") or other investment companies that provide exposure to the S&amp;#38;P 500 Index. SPDRs&lt;sup&gt;&amp;#174; &lt;/sup&gt;are units of beneficial interest in a unit investment trust, representing proportionate undivided interests in a portfolio of securities in substantially the same weighting as the common stocks that comprise the S&amp;#38;P 500 Index. Derivatives, such as options, futures, and options on futures, may also be held by the Portfolio incidental to its main investment strategy.&lt;br/&gt;&lt;br/&gt;Under normal circumstances, the Portfolio will invest at least 80% of its net assets in investments with economic characteristics similar to the stocks represented in the S&amp;#38;P 500 Index. The Portfolio will provide shareholders with at least 60 days' notice before changing this 80% policy. While not required, the Portfolio will generally sell securities that the Index manager removes from the Index.&lt;br/&gt;&lt;br/&gt;Although the Subadvisor will attempt to invest and maintain as much of the Portfolio's assets as is practical in stocks included among the S&amp;#38;P 500 Index and futures contracts and options relating thereto under normal market conditions, a portion of the Portfolio may be invested in money market instruments pending investment or to meet redemption requests or other needs for liquid assets.</rr:StrategyNarrativeTextBlock>
  <rr:RiskHeading contextRef="Duration_01May2012_30Apr2013S000010991_Member">&lt;b&gt;Principal Risks&lt;/b&gt;</rr:RiskHeading>
  <rr:AnnualReturn2005 decimals="4" contextRef="Duration_01May2012_30Apr2013S000010983_MemberC000030357_Member" unitRef="pure">0.0692</rr:AnnualReturn2005>
  <rr:RiskNarrativeTextBlock contextRef="Duration_01May2012_30Apr2013S000010991_Member">You could lose money on your investment in the Portfolio, or the Portfolio could underperform, because of the risks described below. An investment in the Portfolio is not a bank deposit and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.&lt;br/&gt;&lt;br/&gt;Management Risk. Individual investments of the Portfolio may not perform as expected, and the portfolio management practices may not achieve the desired result.&lt;br/&gt;&lt;br/&gt;Stock Market Risk. The market prices of stocks held by the Portfolio may fall.&lt;br/&gt;&lt;br/&gt;Index Tracking Risk. An index fund has operating expenses; a market index does not. The Portfolio, while expected to track its target index as closely as possible, will not be able to match the performance of the index exactly.&lt;br/&gt;&lt;br/&gt;Common Stock Risk. Although common stocks have a history of long-term growth in value, their prices fluctuate based on changes in a company's financial condition, on overall market and economic conditions, and on investors' perception of a company's well-being.&lt;br/&gt;&lt;br/&gt;Large-Cap Company Risk. Large-cap companies may be unable to respond quickly to new competitive challenges such as changes in technology, and also may not be able to attain the high growth rate of successful smaller companies, especially during extended periods of economic expansion.&lt;br/&gt;&lt;br/&gt;Investments in Other Investment Companies. The risks of investing in other investment companies typically reflect the risks of the types of securities in which those investment companies invest. When the Portfolio invests in another investment company, shareholders of the Portfolio bear their proportionate share of the other investment company's fees and expenses as well as their share of the Portfolio's fees and expenses.&lt;br/&gt;&lt;br/&gt;Stock Index Futures and Options Risk. Using stock index futures and options may increase the Portfolio's volatility and may involve a small cash investment relative to the magnitude of risk assumed. If changes in a derivative's value do not correspond to changes in the value of the Portfolio's other investments, the Portfolio may not fully benefit from or could lose money on the derivative position. Derivatives can involve risk of loss if the party who issued the derivative defaults on its obligation. Derivatives may also be less liquid and more difficult to value.</rr:RiskNarrativeTextBlock>
  <rr:BarChartAndPerformanceTableHeading contextRef="Duration_01May2012_30Apr2013S000010991_Member">&lt;b&gt;Performance&lt;/b&gt;</rr:BarChartAndPerformanceTableHeading>
  <rr:FeeWaiverOrReimbursementOverAssetsDateOfTermination contextRef="Duration_01May2012_30Apr2013S000010995_MemberClassI_Member">April 30, 2014</rr:FeeWaiverOrReimbursementOverAssetsDateOfTermination>
  <rr:AnnualReturn2006 decimals="4" contextRef="Duration_01May2012_30Apr2013S000010983_MemberC000030357_Member" unitRef="pure">0.2312</rr:AnnualReturn2006>
  <rr:AnnualReturn2007 decimals="4" contextRef="Duration_01May2012_30Apr2013S000010983_MemberC000030357_Member" unitRef="pure">0.014</rr:AnnualReturn2007>
  <rr:PortfolioTurnoverRate decimals="4" contextRef="Duration_01May2012_30Apr2013S000010995_MemberClassI_Member" unitRef="pure">0.13</rr:PortfolioTurnoverRate>
  <rr:PerformanceNarrativeTextBlock contextRef="Duration_01May2012_30Apr2013S000010991_Member">The following bar chart and table show the Portfolio&amp;#8217;s annual returns and its long-term performance, which give some indication of the risks of investing in the Portfolio. The bar chart shows how the performance has varied from year to year. The table compares the Portfolio&amp;#8217;s performance over time with that of a benchmark index and a peer average.&lt;br/&gt;&lt;br/&gt;The Portfolio&amp;#8217;s past performance does not necessarily indicate how the Portfolio will perform in the future. For updated performance information, visit www.calvert.com.&lt;br/&gt;&lt;br/&gt;The returns shown do not reflect fees and charges imposed under the variable annuity contracts and life insurance policies through which an investment may be made. If those fees and charges were included, they would reduce these returns.</rr:PerformanceNarrativeTextBlock>
  <rr:OperatingExpensesCaption contextRef="Duration_01May2012_30Apr2013S000010992_MemberClassI_Member">&lt;b&gt;Annual Fund Operating Expenses&lt;/b&gt; (expenses that you pay each year as&lt;br/&gt;a % of the value of your investment)</rr:OperatingExpensesCaption>
  <rr:AnnualReturn2008 decimals="4" contextRef="Duration_01May2012_30Apr2013S000010983_MemberC000030357_Member" unitRef="pure">-0.3949</rr:AnnualReturn2008>
  <rr:RiskLoseMoney contextRef="Duration_01May2012_30Apr2013S000010995_MemberClassI_Member">You could lose money on your investment in the Portfolio, or the Portfolio could underperform, because of the risks described below.</rr:RiskLoseMoney>
  <rr:RiskNotInsuredDepositoryInstitution contextRef="Duration_01May2012_30Apr2013S000010995_MemberClassI_Member">An investment in the Portfolio is not a bank deposit and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.</rr:RiskNotInsuredDepositoryInstitution>
  <rr:AnnualReturn2009 decimals="4" contextRef="Duration_01May2012_30Apr2013S000010983_MemberC000030357_Member" unitRef="pure">0.254</rr:AnnualReturn2009>
  <rr:ExpenseExampleHeading contextRef="Duration_01May2012_30Apr2013S000010992_MemberClassI_Member">&lt;b&gt;Example&lt;/b&gt;</rr:ExpenseExampleHeading>
  <rr:ExpenseExampleNarrativeTextBlock contextRef="Duration_01May2012_30Apr2013S000010992_MemberClassI_Member">This example is intended to help you compare the cost of investing in the Portfolio with the cost of investing in other mutual funds. The example assumes that:&lt;ul type="square"&gt;&lt;li style="margin-left:-20px"&gt;you invest $10,000 in the Portfolio for the time periods indicated;&lt;/li&gt;&lt;li style="margin-left:-20px"&gt;your investment has a 5% return each year;&lt;/li&gt;&lt;li style="margin-left:-20px"&gt;the Portfolio&amp;#8217;s operating expenses remain the same; and&lt;/li&gt;&lt;li style="margin-left:-20px"&gt;any Calvert expense limitation is in effect for the period indicated in the fee table above.&lt;/li&gt;&lt;/ul&gt;Although your actual costs may be higher or lower, under these assumptions your costs would be:</rr:ExpenseExampleNarrativeTextBlock>
  <rr:PerformanceInformationIllustratesVariabilityOfReturns contextRef="Duration_01May2012_30Apr2013S000010995_MemberClassI_Member">The following bar chart and table show the Portfolio&amp;#8217;s annual returns and its long-term performance, which give some indication of the risks of investing in the Portfolio. The bar chart shows how the performance has varied from year to year. The table compares the Portfolio&amp;#8217;s performance over time with that of a benchmark index and a peer average.</rr:PerformanceInformationIllustratesVariabilityOfReturns>
  <rr:AnnualReturn2010 decimals="4" contextRef="Duration_01May2012_30Apr2013S000010983_MemberC000030357_Member" unitRef="pure">0.116</rr:AnnualReturn2010>
  <rr:PerformanceAvailabilityWebSiteAddress contextRef="Duration_01May2012_30Apr2013S000010995_MemberClassI_Member">www.calvert.com</rr:PerformanceAvailabilityWebSiteAddress>
  <rr:PortfolioTurnoverHeading contextRef="Duration_01May2012_30Apr2013S000010992_MemberClassI_Member">&lt;b&gt;Portfolio Turnover&lt;/b&gt;</rr:PortfolioTurnoverHeading>
  <rr:PerformancePastDoesNotIndicateFuture contextRef="Duration_01May2012_30Apr2013S000010995_MemberClassI_Member">The Portfolio&amp;#8217;s past performance does not necessarily indicate how the Portfolio will perform in the future.</rr:PerformancePastDoesNotIndicateFuture>
  <rr:AnnualReturn2011 decimals="4" contextRef="Duration_01May2012_30Apr2013S000010983_MemberC000030357_Member" unitRef="pure">-0.0168</rr:AnnualReturn2011>
  <rr:PerformanceTableHeading contextRef="Duration_01May2012_30Apr2013S000010991_Member">&lt;b&gt;Average Annual Total Returns&lt;br/&gt;&lt;b&gt;(as of 12/31/12)&lt;/b&gt;</rr:PerformanceTableHeading>
  <rr:BarChartDoesNotReflectSalesLoads contextRef="Duration_01May2012_30Apr2013S000010995_MemberClassI_Member">The returns shown do not reflect fees and charges imposed under the variable annuity contracts and life insurance policies through which an investment may be made. If those fees and charges were included, they would reduce these returns.</rr:BarChartDoesNotReflectSalesLoads>
  <rr:AnnualReturn2012 decimals="4" contextRef="Duration_01May2012_30Apr2013S000010983_MemberC000030357_Member" unitRef="pure">0.1705</rr:AnnualReturn2012>
  <rr:StrategyHeading contextRef="Duration_01May2012_30Apr2013S000010992_MemberClassI_Member">&lt;b&gt;INVESTMENTS, RISKS AND PERFORMANCE&lt;br/&gt;&lt;br/&gt;Principal Investment Strategies&lt;/b&gt;</rr:StrategyHeading>
  <rr:HighestQuarterlyReturnLabel contextRef="Duration_01May2012_30Apr2013S000010995_MemberC000030371_MemberClassI_Member">Best Quarter (of periods shown)</rr:HighestQuarterlyReturnLabel>
  <rr:BarChartHighestQuarterlyReturnDate contextRef="Duration_01May2012_30Apr2013S000010995_MemberC000030371_MemberClassI_Member">2003-06-30</rr:BarChartHighestQuarterlyReturnDate>
  <rr:RiskHeading contextRef="Duration_01May2012_30Apr2013S000010992_MemberClassI_Member">&lt;b&gt;Principal Risks&lt;/b&gt;</rr:RiskHeading>
  <rr:BarChartHighestQuarterlyReturn decimals="4" contextRef="Duration_01May2012_30Apr2013S000010995_MemberC000030371_MemberClassI_Member" unitRef="pure">0.2353</rr:BarChartHighestQuarterlyReturn>
  <rr:RiskNarrativeTextBlock contextRef="Duration_01May2012_30Apr2013S000010992_MemberClassI_Member">You could lose money on your investment in the Portfolio, or the Portfolio could underperform, because of the risks described below. An investment in the Portfolio is not a bank deposit and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.&lt;br/&gt;&lt;br/&gt;Management Risk. Individual investments of the Portfolio may not perform as expected, and the portfolio management practices may not achieve the desired result.&lt;br/&gt;&lt;br/&gt;Stock Market Risk. The market prices of stocks held by the Portfolio may fall.&lt;br/&gt;&lt;br/&gt;Index Tracking Risk. An index fund has operating expenses; a market index does not. The Portfolio, while expected to track its target index as closely as possible, will not be able to match the performance of the index exactly.&lt;br/&gt;&lt;br/&gt;Common Stock Risk. Although common stocks have a history of long-term growth in value, their prices fluctuate based on changes in a company's financial condition, on overall market and economic conditions, and on investors' perception of a company's well-being.&lt;br/&gt;&lt;br/&gt;Mid-Cap Company Risk. Prices of mid-cap stocks can be more volatile than those of larger, more established companies. Mid-cap companies are more likely to have more limited product lines, fewer capital resources and less depth of management than larger companies.&lt;br/&gt;&lt;br/&gt;Investments in Other Investment Companies. The risks of investing in other investment companies typically reflect the risks of the types of securities in which those investment companies invest. When the Portfolio invests in another investment company, shareholders of the Portfolio bear their proportionate share of the other investment company's fees and expenses as well as their share of the Portfolio's fees and expenses.&lt;br/&gt;&lt;br/&gt;Stock Index Futures and Options Risk. Using stock index futures and options may increase the Portfolio's volatility and may involve a small cash investment relative to the magnitude of risk assumed. If changes in a derivative's value do not correspond to changes in the value of the Portfolio's other investments, the Portfolio may not fully benefit from or could lose money on the derivative position. Derivatives can involve risk of loss if the party who issued the derivative defaults on its obligation. Derivatives may also be less liquid and more difficult to value.</rr:RiskNarrativeTextBlock>
  <rr:BarChartHeading contextRef="Duration_01May2012_30Apr2013S000010992_MemberClassI_Member">&lt;b&gt;Calendar Year Total Returns&lt;/b&gt;</rr:BarChartHeading>
  <rr:LowestQuarterlyReturnLabel contextRef="Duration_01May2012_30Apr2013S000010995_MemberC000030371_MemberClassI_Member">Worst Quarter (of periods shown)</rr:LowestQuarterlyReturnLabel>
  <rr:BarChartLowestQuarterlyReturnDate contextRef="Duration_01May2012_30Apr2013S000010995_MemberC000030371_MemberClassI_Member">2008-12-31</rr:BarChartLowestQuarterlyReturnDate>
  <rr:BarChartLowestQuarterlyReturn decimals="4" contextRef="Duration_01May2012_30Apr2013S000010995_MemberC000030371_MemberClassI_Member" unitRef="pure">-0.2618</rr:BarChartLowestQuarterlyReturn>
  <rr:BarChartHeading contextRef="Duration_01May2012_30Apr2013S000010991_Member">&lt;b&gt;Calendar Year Total Returns&lt;/b&gt;</rr:BarChartHeading>
  <rr:AverageAnnualReturnYear01 decimals="4" contextRef="Duration_01May2012_30Apr2013S000010983_MemberC000030357_Member" unitRef="pure">0.1705</rr:AverageAnnualReturnYear01>
  <rr:AverageAnnualReturnYear01 decimals="4" contextRef="Duration_01May2012_30Apr2013S000010983_MemberRussellTenHundredValueIndex_Member" unitRef="pure">0.1751</rr:AverageAnnualReturnYear01>
  <rr:AverageAnnualReturnYear01 decimals="4" contextRef="Duration_01May2012_30Apr2013S000010983_MemberLipperVaLargeCapValueFundsAverge_Member" unitRef="pure">0.1571</rr:AverageAnnualReturnYear01>
  <rr:AverageAnnualReturnYear05 decimals="4" contextRef="Duration_01May2012_30Apr2013S000010983_MemberC000030357_Member" unitRef="pure">-0.0051</rr:AverageAnnualReturnYear05>
  <rr:AverageAnnualReturnYear05 decimals="4" contextRef="Duration_01May2012_30Apr2013S000010983_MemberRussellTenHundredValueIndex_Member" unitRef="pure">0.0059</rr:AverageAnnualReturnYear05>
  <rr:AverageAnnualReturnYear05 decimals="4" contextRef="Duration_01May2012_30Apr2013S000010983_MemberLipperVaLargeCapValueFundsAverge_Member" unitRef="pure">0.0035</rr:AverageAnnualReturnYear05>
  <rr:AverageAnnualReturnYear10 decimals="4" contextRef="Duration_01May2012_30Apr2013S000010983_MemberC000030357_Member" unitRef="pure">0.0731</rr:AverageAnnualReturnYear10>
  <rr:AverageAnnualReturnYear10 decimals="4" contextRef="Duration_01May2012_30Apr2013S000010983_MemberRussellTenHundredValueIndex_Member" unitRef="pure">0.0738</rr:AverageAnnualReturnYear10>
  <rr:AverageAnnualReturnYear10 decimals="4" contextRef="Duration_01May2012_30Apr2013S000010983_MemberLipperVaLargeCapValueFundsAverge_Member" unitRef="pure">0.0654</rr:AverageAnnualReturnYear10>
  <rr:MaximumSalesChargeImposedOnPurchasesOverOfferingPrice decimals="4" contextRef="Duration_01May2012_30Apr2013S000010995_MemberC000030371_MemberClassI_Member" unitRef="pure">0</rr:MaximumSalesChargeImposedOnPurchasesOverOfferingPrice>
  <rr:MaximumDeferredSalesChargeOverOfferingPrice decimals="4" contextRef="Duration_01May2012_30Apr2013S000010995_MemberC000030371_MemberClassI_Member" unitRef="pure">0</rr:MaximumDeferredSalesChargeOverOfferingPrice>
  <rr:MaximumSalesChargeImposedOnPurchasesOverOfferingPrice decimals="4" contextRef="Duration_01May2012_30Apr2013S000010991_MemberC000030367_Member" unitRef="pure">0</rr:MaximumSalesChargeImposedOnPurchasesOverOfferingPrice>
  <rr:ManagementFeesOverAssets decimals="4" contextRef="Duration_01May2012_30Apr2013S000010995_MemberC000030371_MemberClassI_Member" unitRef="pure">0.0045</rr:ManagementFeesOverAssets>
  <rr:MaximumDeferredSalesChargeOverOfferingPrice decimals="4" contextRef="Duration_01May2012_30Apr2013S000010991_MemberC000030367_Member" unitRef="pure">0</rr:MaximumDeferredSalesChargeOverOfferingPrice>
  <rr:OtherExpensesOverAssets decimals="4" contextRef="Duration_01May2012_30Apr2013S000010995_MemberC000030371_MemberClassI_Member" unitRef="pure">0.0031</rr:OtherExpensesOverAssets>
  <rr:AcquiredFundFeesAndExpensesOverAssets decimals="4" contextRef="Duration_01May2012_30Apr2013S000010995_MemberC000030371_MemberClassI_Member" unitRef="pure">0.0001</rr:AcquiredFundFeesAndExpensesOverAssets>
  <rr:ExpensesOverAssets decimals="4" contextRef="Duration_01May2012_30Apr2013S000010995_MemberC000030371_MemberClassI_Member" unitRef="pure">0.0077</rr:ExpensesOverAssets>
  <rr:FeeWaiverOrReimbursementOverAssets id="Item_3" decimals="4" contextRef="Duration_01May2012_30Apr2013S000010995_MemberC000030371_MemberClassI_Member" unitRef="pure">-0.0002</rr:FeeWaiverOrReimbursementOverAssets>
  <rr:NetExpensesOverAssets decimals="4" contextRef="Duration_01May2012_30Apr2013S000010995_MemberC000030371_MemberClassI_Member" unitRef="pure">0.0075</rr:NetExpensesOverAssets>
  <rr:ManagementFeesOverAssets decimals="4" contextRef="Duration_01May2012_30Apr2013S000010991_MemberC000030367_Member" unitRef="pure">0.0035</rr:ManagementFeesOverAssets>
  <rr:BarChartAndPerformanceTableHeading contextRef="Duration_01May2012_30Apr2013S000010992_MemberClassI_Member">&lt;b&gt;Performance&lt;/b&gt;</rr:BarChartAndPerformanceTableHeading>
  <rr:PerformanceNarrativeTextBlock contextRef="Duration_01May2012_30Apr2013S000010992_MemberClassI_Member">The following bar chart and table show the Portfolio&amp;#8217;s annual returns and its long-term performance, which give some indication of the risks of investing in the Portfolio. The bar chart shows how the performance has varied from year to year. The table compares the Portfolio&amp;#8217;s performance over time with that of a benchmark index and a peer average.&lt;br/&gt;&lt;br/&gt;The Portfolio&amp;#8217;s past performance does not necessarily indicate how the Portfolio will perform in the future. For updated performance information, visit www.calvert.com.&lt;br/&gt;&lt;br/&gt;The returns shown do not reflect fees and charges imposed under the variable annuity contracts and life insurance policies through which an investment may be made. If those fees and charges were included, they would reduce these returns.</rr:PerformanceNarrativeTextBlock>
  <rr:OtherExpensesOverAssets decimals="4" contextRef="Duration_01May2012_30Apr2013S000010991_MemberC000030367_Member" unitRef="pure">0.001</rr:OtherExpensesOverAssets>
  <rr:FeeWaiverOrReimbursementOverAssetsDateOfTermination contextRef="Duration_01May2012_30Apr2013S000010983_Member">April 30, 2014</rr:FeeWaiverOrReimbursementOverAssetsDateOfTermination>
  <rr:ExpensesOverAssets decimals="4" contextRef="Duration_01May2012_30Apr2013S000010991_MemberC000030367_Member" unitRef="pure">0.0045</rr:ExpensesOverAssets>
  <rr:PortfolioTurnoverRate decimals="4" contextRef="Duration_01May2012_30Apr2013S000010983_Member" unitRef="pure">0.51</rr:PortfolioTurnoverRate>
  <rr:FeeWaiverOrReimbursementOverAssets id="Item_4" decimals="4" contextRef="Duration_01May2012_30Apr2013S000010991_MemberC000030367_Member" unitRef="pure">-0.0003</rr:FeeWaiverOrReimbursementOverAssets>
  <rr:NetExpensesOverAssets decimals="4" contextRef="Duration_01May2012_30Apr2013S000010991_MemberC000030367_Member" unitRef="pure">0.0042</rr:NetExpensesOverAssets>
  <rr:RiskLoseMoney contextRef="Duration_01May2012_30Apr2013S000010983_Member">You could lose money on your investment in the Portfolio, or the Portfolio could underperform, because of the risks described below.</rr:RiskLoseMoney>
  <rr:RiskNotInsuredDepositoryInstitution contextRef="Duration_01May2012_30Apr2013S000010983_Member">An investment in the Portfolio is not a bank deposit and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.</rr:RiskNotInsuredDepositoryInstitution>
  <rr:PerformanceInformationIllustratesVariabilityOfReturns contextRef="Duration_01May2012_30Apr2013S000010983_Member">The following bar chart and table show the Portfolio&amp;#8217;s annual returns and its long-term performance, which give some indication of the risks of investing in the Portfolio. The bar chart shows how the performance has varied from year to year. The table compares the Portfolio&amp;#8217;s performance over time with that of a benchmark index and a peer average.</rr:PerformanceInformationIllustratesVariabilityOfReturns>
  <rr:PerformanceAvailabilityWebSiteAddress contextRef="Duration_01May2012_30Apr2013S000010983_Member">www.calvert.com</rr:PerformanceAvailabilityWebSiteAddress>
  <rr:PerformancePastDoesNotIndicateFuture contextRef="Duration_01May2012_30Apr2013S000010983_Member">The Portfolio&amp;#8217;s past performance does not necessarily indicate how the Portfolio will perform in the future.</rr:PerformancePastDoesNotIndicateFuture>
  <rr:BarChartDoesNotReflectSalesLoads contextRef="Duration_01May2012_30Apr2013S000010983_Member">The returns shown do not reflect fees and charges imposed under the variable annuity contracts and life insurance policies through which an investment may be made. If those fees and charges were included, they would reduce these returns.</rr:BarChartDoesNotReflectSalesLoads>
  <rr:ExpenseExampleYear01 decimals="INF" contextRef="Duration_01May2012_30Apr2013S000010995_MemberC000030371_MemberClassI_Member" unitRef="USD">77</rr:ExpenseExampleYear01>
  <rr:HighestQuarterlyReturnLabel contextRef="Duration_01May2012_30Apr2013S000010983_MemberC000030357_Member">Best Quarter (of periods shown)</rr:HighestQuarterlyReturnLabel>
  <rr:ExpenseExampleYear03 decimals="INF" contextRef="Duration_01May2012_30Apr2013S000010995_MemberC000030371_MemberClassI_Member" unitRef="USD">244</rr:ExpenseExampleYear03>
  <rr:BarChartHighestQuarterlyReturnDate contextRef="Duration_01May2012_30Apr2013S000010983_MemberC000030357_Member">2003-06-30</rr:BarChartHighestQuarterlyReturnDate>
  <rr:ExpenseExampleYear05 decimals="INF" contextRef="Duration_01May2012_30Apr2013S000010995_MemberC000030371_MemberClassI_Member" unitRef="USD">426</rr:ExpenseExampleYear05>
  <rr:BarChartHighestQuarterlyReturn decimals="4" contextRef="Duration_01May2012_30Apr2013S000010983_MemberC000030357_Member" unitRef="pure">0.2136</rr:BarChartHighestQuarterlyReturn>
  <rr:LowestQuarterlyReturnLabel contextRef="Duration_01May2012_30Apr2013S000010983_MemberC000030357_Member">Worst Quarter (of periods shown)</rr:LowestQuarterlyReturnLabel>
  <rr:ExpenseExampleYear10 decimals="INF" contextRef="Duration_01May2012_30Apr2013S000010995_MemberC000030371_MemberClassI_Member" unitRef="USD">952</rr:ExpenseExampleYear10>
  <rr:BarChartLowestQuarterlyReturnDate contextRef="Duration_01May2012_30Apr2013S000010983_MemberC000030357_Member">2008-12-31</rr:BarChartLowestQuarterlyReturnDate>
  <rr:BarChartLowestQuarterlyReturn decimals="4" contextRef="Duration_01May2012_30Apr2013S000010983_MemberC000030357_Member" unitRef="pure">-0.2381</rr:BarChartLowestQuarterlyReturn>
  <rr:ExpenseExampleYear01 decimals="INF" contextRef="Duration_01May2012_30Apr2013S000010991_MemberC000030367_Member" unitRef="USD">43</rr:ExpenseExampleYear01>
  <rr:ExpenseExampleYear03 decimals="INF" contextRef="Duration_01May2012_30Apr2013S000010991_MemberC000030367_Member" unitRef="USD">141</rr:ExpenseExampleYear03>
  <rr:AnnualFundOperatingExpensesTableTextBlock contextRef="Duration_01May2012_30Apr2013S000010983_Member">&lt;div style="display:none"&gt;~ http://www.calvert.com/role/ScheduleAnnualFundOperatingExpensesCalvertVPSRILargeCapValuePortfolio column period compact * ~&lt;/div&gt;</rr:AnnualFundOperatingExpensesTableTextBlock>
  <rr:ShareholderFeesTableTextBlock contextRef="Duration_01May2012_30Apr2013S000010983_Member">&lt;div style="display:none"&gt;~ http://www.calvert.com/role/ScheduleShareholderFeesCalvertVPSRILargeCapValuePortfolio column period compact * ~&lt;/div&gt;</rr:ShareholderFeesTableTextBlock>
  <rr:AnnualReturn2003 decimals="4" contextRef="Duration_01May2012_30Apr2013S000010995_MemberC000030371_MemberClassI_Member" unitRef="pure">0.4622</rr:AnnualReturn2003>
  <rr:AnnualReturn2004 decimals="4" contextRef="Duration_01May2012_30Apr2013S000010995_MemberC000030371_MemberClassI_Member" unitRef="pure">0.177</rr:AnnualReturn2004>
  <rr:AnnualReturn2005 decimals="4" contextRef="Duration_01May2012_30Apr2013S000010995_MemberC000030371_MemberClassI_Member" unitRef="pure">0.0401</rr:AnnualReturn2005>
  <rr:AnnualReturn2006 decimals="4" contextRef="Duration_01May2012_30Apr2013S000010995_MemberC000030371_MemberClassI_Member" unitRef="pure">0.176</rr:AnnualReturn2006>
  <rr:ExpenseExampleYear05 decimals="INF" contextRef="Duration_01May2012_30Apr2013S000010991_MemberC000030367_Member" unitRef="USD">249</rr:ExpenseExampleYear05>
  <rr:AnnualReturn2007 decimals="4" contextRef="Duration_01May2012_30Apr2013S000010995_MemberC000030371_MemberClassI_Member" unitRef="pure">-0.022</rr:AnnualReturn2007>
  <rr:ExpenseExampleYear10 decimals="INF" contextRef="Duration_01May2012_30Apr2013S000010991_MemberC000030367_Member" unitRef="USD">564</rr:ExpenseExampleYear10>
  <rr:AnnualReturn2008 decimals="4" contextRef="Duration_01May2012_30Apr2013S000010995_MemberC000030371_MemberClassI_Member" unitRef="pure">-0.3396</rr:AnnualReturn2008>
  <rr:ExpenseExampleWithRedemptionTableTextBlock contextRef="Duration_01May2012_30Apr2013S000010983_Member">&lt;div style="display:none"&gt;~ http://www.calvert.com/role/ScheduleExpenseExampleTransposedCalvertVPSRILargeCapValuePortfolio column period compact * ~&lt;/div&gt;</rr:ExpenseExampleWithRedemptionTableTextBlock>
  <rr:AnnualReturn2009 decimals="4" contextRef="Duration_01May2012_30Apr2013S000010995_MemberC000030371_MemberClassI_Member" unitRef="pure">0.262</rr:AnnualReturn2009>
  <rr:AnnualReturn2010 decimals="4" contextRef="Duration_01May2012_30Apr2013S000010995_MemberC000030371_MemberClassI_Member" unitRef="pure">0.2608</rr:AnnualReturn2010>
  <rr:AnnualReturn2011 decimals="4" contextRef="Duration_01May2012_30Apr2013S000010995_MemberC000030371_MemberClassI_Member" unitRef="pure">-0.0489</rr:AnnualReturn2011>
  <rr:BarChartTableTextBlock contextRef="Duration_01May2012_30Apr2013S000010983_Member">&lt;div style="display:none"&gt;~ http://www.calvert.com/role/ScheduleAnnualTotalReturnsCalvertVPSRILargeCapValuePortfolioBarChart column period compact * ~&lt;/div&gt;</rr:BarChartTableTextBlock>
  <rr:AnnualReturn2012 decimals="4" contextRef="Duration_01May2012_30Apr2013S000010995_MemberC000030371_MemberClassI_Member" unitRef="pure">0.155</rr:AnnualReturn2012>
  <rr:PerformanceTableTextBlock contextRef="Duration_01May2012_30Apr2013S000010983_Member">&lt;div style="display:none"&gt;~ http://www.calvert.com/role/ScheduleAverageAnnualTotalReturnsTransposedCalvertVPSRILargeCapValuePortfolio column period compact * ~&lt;/div&gt;</rr:PerformanceTableTextBlock>
  <rr:AnnualReturn2003 decimals="4" contextRef="Duration_01May2012_30Apr2013S000010991_MemberC000030367_Member" unitRef="pure">0.2798</rr:AnnualReturn2003>
  <rr:AnnualReturn2004 decimals="4" contextRef="Duration_01May2012_30Apr2013S000010991_MemberC000030367_Member" unitRef="pure">0.1037</rr:AnnualReturn2004>
  <rr:AnnualReturn2005 decimals="4" contextRef="Duration_01May2012_30Apr2013S000010991_MemberC000030367_Member" unitRef="pure">0.0452</rr:AnnualReturn2005>
  <rr:AnnualReturn2006 decimals="4" contextRef="Duration_01May2012_30Apr2013S000010991_MemberC000030367_Member" unitRef="pure">0.1536</rr:AnnualReturn2006>
  <rr:RiskReturnHeading contextRef="Duration_01May2012_30Apr2013S000010983_Member">&lt;b&gt;CALVERT VP SRI LARGE CAP VALUE PORTFOLIO&lt;/b&gt;</rr:RiskReturnHeading>
  <rr:StrategyHeading contextRef="Duration_01May2012_30Apr2013S000015005_Member">&lt;b&gt;INVESTMENTS, RISKS AND PERFORMANCE &lt;br/&gt;&lt;br/&gt;Principal Investment Strategies</rr:StrategyHeading>
  <rr:AnnualReturn2007 decimals="4" contextRef="Duration_01May2012_30Apr2013S000010991_MemberC000030367_Member" unitRef="pure">0.0514</rr:AnnualReturn2007>
  <rr:AverageAnnualReturnYear01 decimals="4" contextRef="Duration_01May2012_30Apr2013S000010995_MemberC000030371_MemberClassI_Member" unitRef="pure">0.155</rr:AverageAnnualReturnYear01>
  <rr:AverageAnnualReturnYear01 decimals="4" contextRef="Duration_01May2012_30Apr2013S000010995_MemberClassI_MemberRussellTwentyHundredIndex_Member" unitRef="pure">0.1635</rr:AverageAnnualReturnYear01>
  <rr:AverageAnnualReturnYear01 decimals="4" contextRef="Duration_01May2012_30Apr2013S000010995_MemberClassI_MemberLipperVaSmallCapCoreFundsAverage_Member" unitRef="pure">0.1568</rr:AverageAnnualReturnYear01>
  <rr:AnnualReturn2008 decimals="4" contextRef="Duration_01May2012_30Apr2013S000010991_MemberC000030367_Member" unitRef="pure">-0.3708</rr:AnnualReturn2008>
  <rr:AverageAnnualReturnYear05 decimals="4" contextRef="Duration_01May2012_30Apr2013S000010995_MemberC000030371_MemberClassI_Member" unitRef="pure">0.0291</rr:AverageAnnualReturnYear05>
  <rr:AverageAnnualReturnYear05 decimals="4" contextRef="Duration_01May2012_30Apr2013S000010995_MemberClassI_MemberRussellTwentyHundredIndex_Member" unitRef="pure">0.0356</rr:AverageAnnualReturnYear05>
  <rr:AverageAnnualReturnYear05 decimals="4" contextRef="Duration_01May2012_30Apr2013S000010995_MemberClassI_MemberLipperVaSmallCapCoreFundsAverage_Member" unitRef="pure">0.0341</rr:AverageAnnualReturnYear05>
  <rr:AverageAnnualReturnYear10 decimals="4" contextRef="Duration_01May2012_30Apr2013S000010995_MemberC000030371_MemberClassI_Member" unitRef="pure">0.0904</rr:AverageAnnualReturnYear10>
  <rr:AverageAnnualReturnYear10 decimals="4" contextRef="Duration_01May2012_30Apr2013S000010995_MemberClassI_MemberRussellTwentyHundredIndex_Member" unitRef="pure">0.0972</rr:AverageAnnualReturnYear10>
  <rr:AverageAnnualReturnYear10 decimals="4" contextRef="Duration_01May2012_30Apr2013S000010995_MemberClassI_MemberLipperVaSmallCapCoreFundsAverage_Member" unitRef="pure">0.0903</rr:AverageAnnualReturnYear10>
  <rr:AnnualReturn2009 decimals="4" contextRef="Duration_01May2012_30Apr2013S000010991_MemberC000030367_Member" unitRef="pure">0.2611</rr:AnnualReturn2009>
  <rr:AnnualReturn2010 decimals="4" contextRef="Duration_01May2012_30Apr2013S000010991_MemberC000030367_Member" unitRef="pure">0.1469</rr:AnnualReturn2010>
  <rr:AnnualReturn2011 decimals="4" contextRef="Duration_01May2012_30Apr2013S000010991_MemberC000030367_Member" unitRef="pure">0.0173</rr:AnnualReturn2011>
  <rr:AnnualReturn2012 decimals="4" contextRef="Duration_01May2012_30Apr2013S000010991_MemberC000030367_Member" unitRef="pure">0.1555</rr:AnnualReturn2012>
  <rr:MaximumSalesChargeImposedOnPurchasesOverOfferingPrice decimals="4" contextRef="Duration_01May2012_30Apr2013S000010992_MemberC000030368_MemberClassI_Member" unitRef="pure">0</rr:MaximumSalesChargeImposedOnPurchasesOverOfferingPrice>
  <rr:AverageAnnualReturnYear01 decimals="4" contextRef="Duration_01May2012_30Apr2013S000010991_MemberC000030367_Member" unitRef="pure">0.1555</rr:AverageAnnualReturnYear01>
  <rr:AverageAnnualReturnYear01 decimals="4" contextRef="Duration_01May2012_30Apr2013S000010991_MemberSAndPFiveHundredIndex_Member" unitRef="pure">0.16</rr:AverageAnnualReturnYear01>
  <rr:MaximumDeferredSalesChargeOverOfferingPrice decimals="4" contextRef="Duration_01May2012_30Apr2013S000010992_MemberC000030368_MemberClassI_Member" unitRef="pure">0</rr:MaximumDeferredSalesChargeOverOfferingPrice>
  <rr:AverageAnnualReturnYear05 decimals="4" contextRef="Duration_01May2012_30Apr2013S000010991_MemberC000030367_Member" unitRef="pure">0.0136</rr:AverageAnnualReturnYear05>
  <rr:AverageAnnualReturnYear05 decimals="4" contextRef="Duration_01May2012_30Apr2013S000010991_MemberSAndPFiveHundredIndex_Member" unitRef="pure">0.0166</rr:AverageAnnualReturnYear05>
  <rr:AverageAnnualReturnYear10 decimals="4" contextRef="Duration_01May2012_30Apr2013S000010991_MemberC000030367_Member" unitRef="pure">0.0672</rr:AverageAnnualReturnYear10>
  <rr:AverageAnnualReturnYear10 decimals="4" contextRef="Duration_01May2012_30Apr2013S000010991_MemberSAndPFiveHundredIndex_Member" unitRef="pure">0.071</rr:AverageAnnualReturnYear10>
  <rr:AverageAnnualReturnYear01 decimals="4" contextRef="Duration_01May2012_30Apr2013S000010991_MemberLipperVaSAndPFiveHundredObjectiveFundsAverage_Member" unitRef="pure">0.1539</rr:AverageAnnualReturnYear01>
  <rr:AverageAnnualReturnYear05 decimals="4" contextRef="Duration_01May2012_30Apr2013S000010991_MemberLipperVaSAndPFiveHundredObjectiveFundsAverage_Member" unitRef="pure">0.0129</rr:AverageAnnualReturnYear05>
  <rr:ManagementFeesOverAssets decimals="4" contextRef="Duration_01May2012_30Apr2013S000010992_MemberC000030368_MemberClassI_Member" unitRef="pure">0.004</rr:ManagementFeesOverAssets>
  <rr:AverageAnnualReturnYear10 decimals="4" contextRef="Duration_01May2012_30Apr2013S000010991_MemberLipperVaSAndPFiveHundredObjectiveFundsAverage_Member" unitRef="pure">0.0673</rr:AverageAnnualReturnYear10>
  <rr:OtherExpensesOverAssets decimals="4" contextRef="Duration_01May2012_30Apr2013S000010992_MemberC000030368_MemberClassI_Member" unitRef="pure">0.0013</rr:OtherExpensesOverAssets>
  <rr:ExpensesOverAssets decimals="4" contextRef="Duration_01May2012_30Apr2013S000010992_MemberC000030368_MemberClassI_Member" unitRef="pure">0.0053</rr:ExpensesOverAssets>
  <rr:BarChartClosingTextBlock contextRef="Duration_01May2012_30Apr2013S000015005_Member">&lt;p style="text-align: center; margin-top: 0px; margin-bottom: 0px;"&gt;&lt;br /&gt;&lt;/p&gt; &lt;div align="left"&gt; &lt;table style="width: 6in;" class="MetaData" border="0" cellspacing="0"&gt; &lt;tr&gt;&lt;td width="47%"&gt;&amp;nbsp;&lt;/td&gt; &lt;td width="14%"&gt;&amp;nbsp;&lt;/td&gt; &lt;td width="4%"&gt;&amp;nbsp;&lt;/td&gt; &lt;td width="11%"&gt;&amp;nbsp;&lt;/td&gt; &lt;td width="4%"&gt;&amp;nbsp;&lt;/td&gt; &lt;td width="12%"&gt;&amp;nbsp;&lt;/td&gt; &lt;td width="4%"&gt;&amp;nbsp;&lt;/td&gt;&lt;/tr&gt; &lt;tr valign="bottom"&gt;&lt;td align="left"&gt;&amp;nbsp;&lt;/td&gt; &lt;td align="right"&gt;&lt;b&gt;Quarter&lt;/b&gt;&lt;/td&gt; &lt;td align="left"&gt;&amp;nbsp;&lt;/td&gt; &lt;td colspan="3" align="right"&gt;&lt;b&gt;Total&lt;/b&gt;&lt;/td&gt; &lt;td align="left"&gt;&amp;nbsp;&lt;/td&gt;&lt;/tr&gt; &lt;tr valign="bottom"&gt;&lt;td align="left"&gt;&amp;nbsp;&lt;/td&gt; &lt;td style="border-bottom: #000000 1px solid;" align="right"&gt;&lt;b&gt;Ended&lt;/b&gt;&lt;/td&gt; &lt;td style="border-bottom: #000000 1px solid;" align="left"&gt;&amp;nbsp;&lt;/td&gt; &lt;td style="border-bottom: #000000 1px solid; text-indent: 6px;" colspan="3" align="right"&gt;&lt;b&gt;Return&lt;/b&gt;&lt;/td&gt; &lt;td style="border-bottom: #000000 1px solid;" align="left"&gt;&amp;nbsp;&lt;/td&gt;&lt;/tr&gt; &lt;tr valign="bottom"&gt;&lt;td style="text-indent: 7px;" align="left"&gt;&lt;font class="_mt"&gt;Best Quarter&amp;nbsp;(of periods shown)&lt;/font&gt;&lt;/td&gt; &lt;td align="right"&gt;3/31/08&lt;/td&gt; &lt;td align="left"&gt;&amp;nbsp;&lt;/td&gt; &lt;td colspan="3" align="right"&gt;5.13&lt;/td&gt; &lt;td align="left"&gt;%&lt;/td&gt;&lt;/tr&gt; &lt;tr valign="bottom"&gt;&lt;td style="text-indent: 7px;" align="left"&gt;&lt;font class="_mt"&gt;Worst Quarter&amp;nbsp;(of periods shown)&lt;/font&gt;&lt;/td&gt; &lt;td align="right"&gt;9/30/08&lt;/td&gt; &lt;td align="left"&gt;&amp;nbsp;&lt;/td&gt; &lt;td colspan="3" align="right"&gt;-3.52&lt;/td&gt; &lt;td align="left"&gt;%&lt;/td&gt;&lt;/tr&gt; &lt;tr&gt;&lt;td colspan="7"&gt;&amp;nbsp;&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;&lt;/div&gt;</rr:BarChartClosingTextBlock>
  <rr:PerformanceTableHeading contextRef="Duration_01May2012_30Apr2013S000010992_MemberClassI_Member">&lt;b&gt;Average Annual Total Returns&lt;br/&gt;(as of 12/31/12)&lt;/b&gt;</rr:PerformanceTableHeading>
  <rr:ExpenseExampleYear01 decimals="INF" contextRef="Duration_01May2012_30Apr2013S000010992_MemberC000030368_MemberClassI_Member" unitRef="USD">54</rr:ExpenseExampleYear01>
  <rr:ExpenseExampleYear03 decimals="INF" contextRef="Duration_01May2012_30Apr2013S000010992_MemberC000030368_MemberClassI_Member" unitRef="USD">170</rr:ExpenseExampleYear03>
  <rr:ExpenseExampleYear05 decimals="INF" contextRef="Duration_01May2012_30Apr2013S000010992_MemberC000030368_MemberClassI_Member" unitRef="USD">296</rr:ExpenseExampleYear05>
  <rr:ExpenseExampleYear10 decimals="INF" contextRef="Duration_01May2012_30Apr2013S000010992_MemberC000030368_MemberClassI_Member" unitRef="USD">665</rr:ExpenseExampleYear10>
  <rr:AnnualReturn2003 decimals="4" contextRef="Duration_01May2012_30Apr2013S000010992_MemberC000030368_MemberClassI_Member" unitRef="pure">0.3474</rr:AnnualReturn2003>
  <rr:AnnualReturn2004 decimals="4" contextRef="Duration_01May2012_30Apr2013S000010992_MemberC000030368_MemberClassI_Member" unitRef="pure">0.1576</rr:AnnualReturn2004>
  <rr:AnnualReturn2005 decimals="4" contextRef="Duration_01May2012_30Apr2013S000010992_MemberC000030368_MemberClassI_Member" unitRef="pure">0.1194</rr:AnnualReturn2005>
  <rr:AnnualReturn2006 decimals="4" contextRef="Duration_01May2012_30Apr2013S000010992_MemberC000030368_MemberClassI_Member" unitRef="pure">0.0972</rr:AnnualReturn2006>
  <rr:AnnualReturn2007 decimals="4" contextRef="Duration_01May2012_30Apr2013S000010992_MemberC000030368_MemberClassI_Member" unitRef="pure">0.0738</rr:AnnualReturn2007>
  <rr:AnnualReturn2008 decimals="4" contextRef="Duration_01May2012_30Apr2013S000010992_MemberC000030368_MemberClassI_Member" unitRef="pure">-0.3663</rr:AnnualReturn2008>
  <rr:AnnualReturn2009 decimals="4" contextRef="Duration_01May2012_30Apr2013S000010992_MemberC000030368_MemberClassI_Member" unitRef="pure">0.3638</rr:AnnualReturn2009>
  <rr:AnnualReturn2010 decimals="4" contextRef="Duration_01May2012_30Apr2013S000010992_MemberC000030368_MemberClassI_Member" unitRef="pure">0.2598</rr:AnnualReturn2010>
  <rr:AnnualReturn2011 decimals="4" contextRef="Duration_01May2012_30Apr2013S000010992_MemberC000030368_MemberClassI_Member" unitRef="pure">-0.0224</rr:AnnualReturn2011>
  <rr:AnnualReturn2012 decimals="4" contextRef="Duration_01May2012_30Apr2013S000010992_MemberC000030368_MemberClassI_Member" unitRef="pure">0.1731</rr:AnnualReturn2012>
  <rr:AverageAnnualReturnYear01 decimals="4" contextRef="Duration_01May2012_30Apr2013S000010992_MemberC000030368_MemberClassI_Member" unitRef="pure">0.1731</rr:AverageAnnualReturnYear01>
  <rr:AverageAnnualReturnYear01 decimals="4" contextRef="Duration_01May2012_30Apr2013S000010992_MemberClassI_MemberSAndPMidCapFourHundredIndex_Member" unitRef="pure">0.1788</rr:AverageAnnualReturnYear01>
  <rr:AverageAnnualReturnYear01 decimals="4" contextRef="Duration_01May2012_30Apr2013S000010992_MemberClassI_MemberLipperVaMidCapCoreFundsAverage_Member" unitRef="pure">0.1607</rr:AverageAnnualReturnYear01>
  <rr:AverageAnnualReturnYear05 decimals="4" contextRef="Duration_01May2012_30Apr2013S000010992_MemberC000030368_MemberClassI_Member" unitRef="pure">0.0454</rr:AverageAnnualReturnYear05>
  <rr:AverageAnnualReturnYear05 decimals="4" contextRef="Duration_01May2012_30Apr2013S000010992_MemberClassI_MemberSAndPMidCapFourHundredIndex_Member" unitRef="pure">0.0515</rr:AverageAnnualReturnYear05>
  <rr:AverageAnnualReturnYear05 decimals="4" contextRef="Duration_01May2012_30Apr2013S000010992_MemberClassI_MemberLipperVaMidCapCoreFundsAverage_Member" unitRef="pure">0.0282</rr:AverageAnnualReturnYear05>
  <rr:AverageAnnualReturnYear10 decimals="4" contextRef="Duration_01May2012_30Apr2013S000010992_MemberC000030368_MemberClassI_Member" unitRef="pure">0.0989</rr:AverageAnnualReturnYear10>
  <rr:AverageAnnualReturnYear10 decimals="4" contextRef="Duration_01May2012_30Apr2013S000010992_MemberClassI_MemberSAndPMidCapFourHundredIndex_Member" unitRef="pure">0.1053</rr:AverageAnnualReturnYear10>
  <rr:AverageAnnualReturnYear10 decimals="4" contextRef="Duration_01May2012_30Apr2013S000010992_MemberClassI_MemberLipperVaMidCapCoreFundsAverage_Member" unitRef="pure">0.0896</rr:AverageAnnualReturnYear10>
  <rr:BarChartClosingTextBlock contextRef="Duration_01May2012_30Apr2013S000010995_MemberClassI_Member">&lt;div align="left"&gt; &lt;table style="width: 6in;" class="MetaData" border="0" cellspacing="0"&gt; &lt;tr&gt;&lt;td width="47%"&gt;&amp;nbsp;&lt;/td&gt; &lt;td width="14%"&gt;&amp;nbsp;&lt;/td&gt; &lt;td width="4%"&gt;&amp;nbsp;&lt;/td&gt; &lt;td width="11%"&gt;&amp;nbsp;&lt;/td&gt; &lt;td width="4%"&gt;&amp;nbsp;&lt;/td&gt; &lt;td width="12%"&gt;&amp;nbsp;&lt;/td&gt; &lt;td width="4%"&gt;&amp;nbsp;&lt;/td&gt;&lt;/tr&gt; &lt;tr valign="bottom"&gt;&lt;td align="left"&gt;&amp;nbsp;&lt;/td&gt; &lt;td align="right"&gt;&lt;b&gt;Quarter&lt;/b&gt;&lt;/td&gt; &lt;td align="left"&gt;&amp;nbsp;&lt;/td&gt; &lt;td colspan="3" align="right"&gt;&lt;b&gt;Total&lt;/b&gt;&lt;/td&gt; &lt;td align="left"&gt;&amp;nbsp;&lt;/td&gt;&lt;/tr&gt; &lt;tr valign="bottom"&gt;&lt;td align="left"&gt;&amp;nbsp;&lt;/td&gt; &lt;td style="border-bottom: #000000 1px solid;" align="right"&gt;&lt;b&gt;Ended&lt;/b&gt;&lt;/td&gt; &lt;td style="border-bottom: #000000 1px solid;" align="left"&gt;&amp;nbsp;&lt;/td&gt; &lt;td style="border-bottom: #000000 1px solid; text-indent: 6px;" colspan="3" align="right"&gt;&lt;b&gt;Return&lt;/b&gt;&lt;/td&gt; &lt;td style="border-bottom: #000000 1px solid;" align="left"&gt;&amp;nbsp;&lt;/td&gt;&lt;/tr&gt; &lt;tr valign="bottom"&gt;&lt;td style="text-indent: 7px;" align="left"&gt;&lt;font class="_mt"&gt;Best Quarter (of periods shown)&lt;/font&gt;&lt;/td&gt; &lt;td align="right"&gt;6/30/03&lt;/td&gt; &lt;td align="left"&gt;&amp;nbsp;&lt;/td&gt; &lt;td colspan="3" align="right"&gt;23.53&lt;/td&gt; &lt;td align="left"&gt;%&lt;/td&gt;&lt;/tr&gt; &lt;tr valign="bottom"&gt;&lt;td style="text-indent: 7px;" align="left"&gt;&lt;font class="_mt"&gt;Worst Quarter (of periods shown)&lt;/font&gt;&lt;/td&gt; &lt;td align="right"&gt;12/31/08&lt;/td&gt; &lt;td align="left"&gt;&amp;nbsp;&lt;/td&gt; &lt;td colspan="3" align="right"&gt;-26.18&lt;/td&gt; &lt;td align="left"&gt;%&lt;/td&gt;&lt;/tr&gt; &lt;tr&gt;&lt;td colspan="7"&gt;&amp;nbsp;&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;&lt;/div&gt;</rr:BarChartClosingTextBlock>
  <rr:FeeWaiverOrReimbursementOverAssetsDateOfTermination contextRef="Duration_01May2012_30Apr2013S000010991_Member">April 30, 2014</rr:FeeWaiverOrReimbursementOverAssetsDateOfTermination>
  <rr:PortfolioTurnoverRate decimals="4" contextRef="Duration_01May2012_30Apr2013S000010991_Member" unitRef="pure">0.05</rr:PortfolioTurnoverRate>
  <rr:ExpenseExampleNoRedemptionYear01 decimals="INF" contextRef="Duration_01May2012_30Apr2013S000010992_MemberC000030368_MemberClassI_Member" unitRef="USD">54</rr:ExpenseExampleNoRedemptionYear01>
  <rr:ExpenseExampleNoRedemptionYear03 decimals="INF" contextRef="Duration_01May2012_30Apr2013S000010992_MemberC000030368_MemberClassI_Member" unitRef="USD">170</rr:ExpenseExampleNoRedemptionYear03>
  <rr:ExpenseExampleNoRedemptionYear01 decimals="INF" contextRef="Duration_01May2012_30Apr2013S000010995_MemberC000030371_MemberClassI_Member" unitRef="USD">77</rr:ExpenseExampleNoRedemptionYear01>
  <rr:StrategyNarrativeTextBlock contextRef="Duration_01May2012_30Apr2013S000015005_Member">The Portfolio seeks to achieve its objective by investing under normal circumstances at least 80% of its net assets (including borrowings for investment purposes) in inflation protected fixed income securities. The Portfolio will provide shareholders with at least 60 days' notice before changing this 80% policy. These securities will normally be U.S. dollar denominated and include securities issued by the U.S. Government, its agencies and instrumentalities, as well as other entities such as foreign governments or corporations. Inflation protected or adjusted fixed income securities are structured to provide protection against inflation by directly or indirectly adjusting the value of the bond's principal or the interest income paid based (directly or indirectly) on changes in the official inflation measures reported by the U.S. Bureau of Labor Statistics. Foreign inflation protected securities are adjusted using a comparable statistic issued by the respective government. &lt;br/&gt;&lt;br/&gt;Up to 20% of the Portfolio's assets may be invested in fixed income securities that are not inflation indexed, including unrated or below investment-grade bonds ("high yield" or "junk" bonds), convertible debt securities, convertible preferred and preferred stocks, or other securities.&lt;br/&gt;&lt;br/&gt; The Portfolio generally will not directly purchase common stocks. However, it may retain up to 10% of the value of its total assets in common stocks acquired by conversion of fixed income securities or by exercise of warrants attached thereto. The Portfolio may invest in U.S. Treasury futures contracts, write covered call options on U.S. Treasury securities and buy or sell options on futures contracts for such securities.&lt;br/&gt;&lt;br/&gt;  The Portfolio employs an active trading strategy.</rr:StrategyNarrativeTextBlock>
  <rr:ExpenseExampleNoRedemptionYear01 decimals="INF" contextRef="Duration_01May2012_30Apr2013S000010983_MemberC000030357_Member" unitRef="USD">80</rr:ExpenseExampleNoRedemptionYear01>
  <rr:ExpenseExampleNoRedemptionYear03 decimals="INF" contextRef="Duration_01May2012_30Apr2013S000010983_MemberC000030357_Member" unitRef="USD">264</rr:ExpenseExampleNoRedemptionYear03>
  <rr:RiskHeading contextRef="Duration_01May2012_30Apr2013S000015005_Member">&lt;b&gt;Principal Risks&lt;/b&gt;</rr:RiskHeading>
  <rr:ExpenseExampleNoRedemptionYear05 decimals="INF" contextRef="Duration_01May2012_30Apr2013S000010983_MemberC000030357_Member" unitRef="USD">465</rr:ExpenseExampleNoRedemptionYear05>
  <rr:ExpenseExampleNoRedemptionYear03 decimals="INF" contextRef="Duration_01May2012_30Apr2013S000010995_MemberC000030371_MemberClassI_Member" unitRef="USD">244</rr:ExpenseExampleNoRedemptionYear03>
  <rr:ExpenseExampleNoRedemptionYear10 decimals="INF" contextRef="Duration_01May2012_30Apr2013S000010983_MemberC000030357_Member" unitRef="USD">1043</rr:ExpenseExampleNoRedemptionYear10>
  <rr:ExpenseExampleNoRedemptionYear05 decimals="INF" contextRef="Duration_01May2012_30Apr2013S000010995_MemberC000030371_MemberClassI_Member" unitRef="USD">426</rr:ExpenseExampleNoRedemptionYear05>
  <rr:ExpenseExampleNoRedemptionYear10 decimals="INF" contextRef="Duration_01May2012_30Apr2013S000010995_MemberC000030371_MemberClassI_Member" unitRef="USD">952</rr:ExpenseExampleNoRedemptionYear10>
  <rr:RiskLoseMoney contextRef="Duration_01May2012_30Apr2013S000010991_Member">You could lose money on your investment in the Portfolio, or the Portfolio could underperform, because of the risks described below.</rr:RiskLoseMoney>
  <rr:RiskNotInsuredDepositoryInstitution contextRef="Duration_01May2012_30Apr2013S000010991_Member">An investment in the Portfolio is not a bank deposit and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.</rr:RiskNotInsuredDepositoryInstitution>
  <rr:PerformanceInformationIllustratesVariabilityOfReturns contextRef="Duration_01May2012_30Apr2013S000010991_Member">The following bar chart and table show the Portfolio&amp;#8217;s annual returns and its long-term performance, which give some indication of the risks of investing in the Portfolio. The bar chart shows how the performance has varied from year to year. The table compares the Portfolio&amp;#8217;s performance over time with that of a benchmark index and a peer average.</rr:PerformanceInformationIllustratesVariabilityOfReturns>
  <rr:PerformanceAvailabilityWebSiteAddress contextRef="Duration_01May2012_30Apr2013S000010991_Member">www.calvert.com</rr:PerformanceAvailabilityWebSiteAddress>
  <rr:PerformancePastDoesNotIndicateFuture contextRef="Duration_01May2012_30Apr2013S000010991_Member">The Portfolio&amp;#8217;s past performance does not necessarily indicate how the Portfolio will perform in the future.</rr:PerformancePastDoesNotIndicateFuture>
  <rr:ShareholderFeesTableTextBlock contextRef="Duration_01May2012_30Apr2013S000010995_MemberClassI_Member">&lt;div style="display:none"&gt;~ http://www.calvert.com/role/ScheduleShareholderFeesCalvertVPRussell2000SmallCapIndexPortfolio column period compact * ~&lt;/div&gt;</rr:ShareholderFeesTableTextBlock>
  <rr:AnnualFundOperatingExpensesTableTextBlock contextRef="Duration_01May2012_30Apr2013S000010995_MemberClassI_Member">&lt;div style="display:none"&gt;~ http://www.calvert.com/role/ScheduleAnnualFundOperatingExpensesCalvertVPRussell2000SmallCapIndexPortfolio column period compact * ~&lt;/div&gt;</rr:AnnualFundOperatingExpensesTableTextBlock>
  <rr:ExpenseExampleWithRedemptionTableTextBlock contextRef="Duration_01May2012_30Apr2013S000010995_MemberClassI_Member">&lt;div style="display:none"&gt;~ http://www.calvert.com/role/ScheduleExpenseExampleTransposedCalvertVPRussell2000SmallCapIndexPortfolio column period compact * ~&lt;/div&gt;</rr:ExpenseExampleWithRedemptionTableTextBlock>
  <rr:ExpenseExampleNoRedemptionTableTextBlock contextRef="Duration_01May2012_30Apr2013S000010995_MemberClassI_Member">&lt;div style="display:none"&gt;~ http://www.calvert.com/role/ScheduleExpenseExampleNoRedemptionTransposedCalvertVPRussell2000SmallCapIndexPortfolio column period compact * ~&lt;/div&gt;</rr:ExpenseExampleNoRedemptionTableTextBlock>
  <rr:BarChartTableTextBlock contextRef="Duration_01May2012_30Apr2013S000010995_MemberClassI_Member">&lt;div style="display:none"&gt;~ http://www.calvert.com/role/ScheduleAnnualTotalReturnsCalvertVPRussell2000SmallCapIndexPortfolioBarChart column period compact * ~&lt;/div&gt;</rr:BarChartTableTextBlock>
  <rr:RiskNarrativeTextBlock contextRef="Duration_01May2012_30Apr2013S000015005_Member">You could lose money on your investment in the Portfolio, or the Portfolio could underperform, because of the risks described below. An investment in the Portfolio is not a bank deposit and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.&lt;br/&gt;&lt;br/&gt; Bond Market Risk. The market prices of bonds held by the Portfolio may fall.&lt;br/&gt;&lt;br/&gt; Credit Risk. The credit quality of fixed-income securities may deteriorate, which could lead to default or bankruptcy of the issuer where the issuer becomes unable to pay its obligations when due.&lt;br/&gt;&lt;br/&gt; Management Risk. Individual investments of the Portfolio may not perform as expected, and the portfolio management practices may not achieve the desired result.&lt;br/&gt;&lt;br/&gt; Risk of Investing for Inflation Protection. Inflation protected fixed income securities do no protect against changes in interest rates to the extent such changes are not attributable to inflation.&lt;br/&gt;&lt;br/&gt; Interest Rate Risk. A change in interest rates may adversely affect the value of fixed-income securities. When interest rates rise, the value of fixed-income securities will generally fall. Longer-term securities are subject to greater interest rate risk.&lt;br/&gt;&lt;br/&gt;  Structured Notes. These are derivative investments whose value depends on, or is derived from, the value of an underlying asset. Structured notes may be tied to the performance of individual stocks or to baskets of assets such as commodities. Structured notes are generally corporate debt securities and are subject to similar risks such as credit risk and the loss of principal. Many structured notes are illiquid, and therefore subject to the Portfolio's investment limitation on illiquid investments. Some secondary markets may exist for certain structured notes. A structured note carries the credit rating of its issuer and the Portfolio will only invest in structured notes issued by issuers with investment grade ratings.&lt;br/&gt;&lt;br/&gt;  Mortgage-Backed and Asset-Backed Securities Risk. The value of investments in mortgage-backed and asset-backed securities is subject to interest rate risk and credit risk. These securities are also subject to the risk that borrowers will prepay the principal on their loans more quickly than expected (prepayment risk) or more slowly than expected (extension risk), which will affect the yield, average life and price of the securities. In addition, faster-than-expected prepayments may cause the Portfolio to invest the prepaid principal in lower yielding securities, and slower-than-expected prepayments may reduce the potential for the Portfolio to invest in higher yielding securities.&lt;br/&gt;&lt;br/&gt;  Mortgage-Backed Security Risk (Government-Sponsored Enterprises). Debt and mortgage-backed securities issued by government-sponsored enterprises ("GSEs") such as the Federal National Mortgage Association ("FNMA") and the Federal Home Loan Mortgage Corporation ("FHLMC") are neither insured nor guaranteed by the U.S. Treasury and are not backed by the full faith and credit of the U.S. Government. Such securities are only supported by the credit of the applicable GSE. The U.S. government has provided financial support to FNMA and FHLMC, but there can be no assurance that it will support these or other GSEs in the future.&lt;br/&gt;&lt;br/&gt;  Junk Bond Risk. Investments in junk bonds can involve a substantial risk of loss. Junk bonds are considered to be speculative with respect to the issuer's ability to pay interest and principal. These securities, which are rated below investment grade, have a higher risk of issuer default, are subject to greater price volatility and may be illiquid.&lt;br/&gt;&lt;br/&gt;  Defaulted Bonds Risk. For bonds in default (those rated "D" by Standard &amp;amp; Poor's or the equivalent by another nationally recog-nized statistical rating organization, there is a significant risk that these bonds will not achieve full recovery.&lt;br/&gt;&lt;br/&gt;   Unrated security risk. Unrated securities may be less liquid than rated securities determined to be of comparable quality. When the Portfolio purchases unrated securities, it will depend on the Advisor's analysis of credit risk without the assessment of an NRSRO.&lt;br/&gt;&lt;br/&gt;  Corporate and Taxable Municipal Bond Risk. For corporate and taxable municipal bonds, there is credit risk in addition to the interest rate risk that affects all fixed-income securities.&lt;br/&gt;&lt;br/&gt;  Foreign Securities Risk. Investing in foreign securities involves additional risks relating to political, social, and economic developments abroad. Other risks result from the differences between the regulations to which U.S. and foreign issuers and markets are subject, and the potential for foreign markets to be less liquid and more volatile than U.S. markets.&lt;br/&gt;&lt;br/&gt;  Foreign Currency Risk. Securities that trade or are denominated in currencies other than the U.S. dollar may be adversely affected by fluctuations in currency exchange rates. When the U.S. dollar strengthens relative to a foreign currency, the U.S. dollar value of an investment denominated in that currency will typically fall.&lt;br/&gt;&lt;br/&gt;  Active Trading Strategy Risk. The Portfolio employs an active trading style that can result in higher turnover (exceeding 100%), may translate to higher transaction costs and may increase your tax liability.&lt;br/&gt;&lt;br/&gt; Preferred Stock Risk. The market value of preferred stock generally decreases when interest rates rise and is affected by the issuer's ability to make payments on the preferred stock.&lt;br/&gt;&lt;br/&gt; Convertible Securities Risk. The value of convertible securities may be affected by changes in interest rates, the creditworthiness of their issuers, and the ability of those issuers to repay principal and to make interest payments.&lt;br/&gt;&lt;br/&gt;  Futures and Options Risk. Using futures and options may increase the Portfolio's volatility and may involve a small cash investment relative to the magnitude of risk assumed. If changes in a derivative's value do not correspond to changes in the value of the Portfolio's other investments, the Portfolio may not fully benefit from or could lose money on the derivative position. Derivatives can involve risk of loss if the party who issued the derivative defaults on its obligation. Derivatives may also be less liquid and more difficult to value.</rr:RiskNarrativeTextBlock>
  <rr:PerformanceTableTextBlock contextRef="Duration_01May2012_30Apr2013S000010995_MemberClassI_Member">&lt;div style="display:none"&gt;~ http://www.calvert.com/role/ScheduleAverageAnnualTotalReturnsTransposedCalvertVPRussell2000SmallCapIndexPortfolio column period compact * ~&lt;/div&gt;</rr:PerformanceTableTextBlock>
  <rr:BarChartHeading contextRef="Duration_01May2012_30Apr2013S000015005_Member">&lt;b&gt;Calendar Year Total Returns&lt;/b&gt;</rr:BarChartHeading>
  <rr:PerformanceTableHeading contextRef="Duration_01May2012_30Apr2013S000015005_Member">&lt;b&gt;Average Annual Total Returns&lt;br/&gt;(as of 12/31/12)&lt;/b&gt;</rr:PerformanceTableHeading>
  <rr:BarChartAndPerformanceTableHeading contextRef="Duration_01May2012_30Apr2013S000015005_Member">&lt;b&gt;Performance&lt;/b&gt;</rr:BarChartAndPerformanceTableHeading>
  <rr:BarChartDoesNotReflectSalesLoads contextRef="Duration_01May2012_30Apr2013S000010991_Member">The returns shown do not reflect fees and charges imposed under the variable annuity contracts and life insurance policies through which an investment may be made. If those fees and charges were included, they would reduce these returns.</rr:BarChartDoesNotReflectSalesLoads>
  <rr:HighestQuarterlyReturnLabel contextRef="Duration_01May2012_30Apr2013S000010991_MemberC000030367_Member">Best Quarter (of periods shown)</rr:HighestQuarterlyReturnLabel>
  <rr:BarChartHighestQuarterlyReturnDate contextRef="Duration_01May2012_30Apr2013S000010991_MemberC000030367_Member">2009-06-30</rr:BarChartHighestQuarterlyReturnDate>
  <rr:BarChartHighestQuarterlyReturn decimals="4" contextRef="Duration_01May2012_30Apr2013S000010991_MemberC000030367_Member" unitRef="pure">0.1585</rr:BarChartHighestQuarterlyReturn>
  <rr:LowestQuarterlyReturnLabel contextRef="Duration_01May2012_30Apr2013S000010991_MemberC000030367_Member">Worst Quarter (of periods shown)</rr:LowestQuarterlyReturnLabel>
  <rr:BarChartLowestQuarterlyReturn decimals="4" contextRef="Duration_01May2012_30Apr2013S000010991_MemberC000030367_Member" unitRef="pure">-0.2191</rr:BarChartLowestQuarterlyReturn>
  <rr:BarChartLowestQuarterlyReturnDate contextRef="Duration_01May2012_30Apr2013S000010991_MemberC000030367_Member">2008-12-31</rr:BarChartLowestQuarterlyReturnDate>
  <rr:RiskReturnHeading contextRef="Duration_01May2012_30Apr2013S000010994_Member">&lt;b&gt;CALVERT VP NASDAQ 100 INDEX PORTFOLIO&lt;/b&gt;</rr:RiskReturnHeading>
  <rr:PerformanceNarrativeTextBlock contextRef="Duration_01May2012_30Apr2013S000015005_Member">The following bar chart and table show the Portfolio&amp;#8217;s annual returns and its long-term performance, which give some indication of the risks of investing in the Portfolio. The bar chart shows how the performance has varied from year to year. The table compares the Portfolio&amp;#8217;s performance over time with that of a benchmark index and a peer average.&lt;br/&gt;&lt;br/&gt;The Portfolio&amp;#8217;s past performance does not necessarily indicate how the Portfolio will perform in the future. For updated performance information, visit www.calvert.com.&lt;br/&gt;&lt;br/&gt;The returns shown do not reflect fees and charges imposed under the variable annuity contracts and life insurance policies through which an investment may be made. If those fees and charges were included, they would reduce these returns.</rr:PerformanceNarrativeTextBlock>
  <rr:ObjectiveHeading contextRef="Duration_01May2012_30Apr2013S000010994_Member">&lt;b&gt;INVESTMENT OBJECTIVE&lt;/b&gt;</rr:ObjectiveHeading>
  <rr:ExpenseHeading contextRef="Duration_01May2012_30Apr2013S000010994_Member">&lt;b&gt;FEES AND EXPENSES OF THE PORTFOLIO&lt;/b&gt;</rr:ExpenseHeading>
  <rr:ExpenseNarrativeTextBlock contextRef="Duration_01May2012_30Apr2013S000010994_Member">This table describes the fees and expenses that you may pay if you invest in shares of the Portfolio.&lt;br/&gt;&lt;br/&gt;The table and the following example do not reflect fees and charges imposed under the variable annuity contracts and life insurance policies (each a &amp;#8220;Policy&amp;#8221;) through which an investment may be made. If those fees and charges were included, costs would be higher. Please consult the prospectus for your Policy for information regarding those fees and charges.</rr:ExpenseNarrativeTextBlock>
  <rr:ShareholderFeesCaption contextRef="Duration_01May2012_30Apr2013S000010994_Member">&lt;b&gt;Shareholder Fees &lt;/b&gt;(fees paid directly from your investment)</rr:ShareholderFeesCaption>
  <rr:ExpenseExampleNoRedemptionYear05 decimals="INF" contextRef="Duration_01May2012_30Apr2013S000010992_MemberC000030368_MemberClassI_Member" unitRef="USD">296</rr:ExpenseExampleNoRedemptionYear05>
  <rr:OperatingExpensesCaption contextRef="Duration_01May2012_30Apr2013S000010994_Member">&lt;b&gt;Annual Fund Operating Expenses &lt;/b&gt;(expenses that you pay each year as&lt;br/&gt;a % of the value of your investment)</rr:OperatingExpensesCaption>
  <rr:ExpenseExampleNoRedemptionYear10 decimals="INF" contextRef="Duration_01May2012_30Apr2013S000010992_MemberC000030368_MemberClassI_Member" unitRef="USD">665</rr:ExpenseExampleNoRedemptionYear10>
  <rr:PortfolioTurnoverHeading contextRef="Duration_01May2012_30Apr2013S000010994_Member">&lt;b&gt;Portfolio Turnover&lt;/b&gt;</rr:PortfolioTurnoverHeading>
  <rr:ExpenseExampleNoRedemptionYear01 decimals="INF" contextRef="Duration_01May2012_30Apr2013S000010991_MemberC000030367_Member" unitRef="USD">43</rr:ExpenseExampleNoRedemptionYear01>
  <rr:ExpenseExampleNoRedemptionYear03 decimals="INF" contextRef="Duration_01May2012_30Apr2013S000010991_MemberC000030367_Member" unitRef="USD">141</rr:ExpenseExampleNoRedemptionYear03>
  <rr:ExpenseExampleNoRedemptionYear05 decimals="INF" contextRef="Duration_01May2012_30Apr2013S000010991_MemberC000030367_Member" unitRef="USD">249</rr:ExpenseExampleNoRedemptionYear05>
  <rr:ExpenseExampleNoRedemptionYear10 decimals="INF" contextRef="Duration_01May2012_30Apr2013S000010991_MemberC000030367_Member" unitRef="USD">564</rr:ExpenseExampleNoRedemptionYear10>
  <rr:ExpenseExampleHeading contextRef="Duration_01May2012_30Apr2013S000010994_Member">&lt;b&gt;Example&lt;/b&gt;</rr:ExpenseExampleHeading>
  <rr:ExpenseExampleNarrativeTextBlock contextRef="Duration_01May2012_30Apr2013S000010994_Member">This example is intended to help you compare the cost of investing in the Portfolio with the cost of investing in other mutual funds. The example assumes that:&lt;ul type="square"&gt;&lt;li style="margin-left:-20px"&gt;you invest $10,000 in the Portfolio for the time periods indicated;&lt;/li&gt;&lt;li style="margin-left:-20px"&gt;your investment has a 5% return each year;&lt;/li&gt;&lt;li style="margin-left:-20px"&gt;the Portfolio&amp;#8217;s operating expenses remain the same; and&lt;/li&gt;&lt;li style="margin-left:-20px"&gt;any Calvert expense limitation is in effect for the period indicated in the fee table above.&lt;/li&gt;&lt;/ul&gt;Although your actual costs may be higher or lower, under these assumptions your costs would be:</rr:ExpenseExampleNarrativeTextBlock>
  <rr:StrategyHeading contextRef="Duration_01May2012_30Apr2013S000010994_Member">&lt;b&gt;INVESTMENTS, RISKS AND PERFORMANCE&lt;br/&gt;&lt;br/&gt;Principal Investment Strategies&lt;/b&gt;</rr:StrategyHeading>
  <rr:StrategyNarrativeTextBlock contextRef="Duration_01May2012_30Apr2013S000010994_Member">The Portfolio seeks to substantially replicate the total return of the securities comprising the NASDAQ-100 Index, taking into consideration redemptions, sales of additional shares, and other adjustments described below. The NASDAQ-100 Index is an unmanaged index of common stocks comprised of 100 common stocks of the largest domestic and international non-financial companies on the broader NASDAQ Composite Index based on market capitalization. As of December 31, 2012, the market capitalization of the NASDAQ-100 Index companies ranged from $4.4 billion to $500.5 billion with a weighted median level of $11.9 billion and a weighted average level of $32.4 billion.&lt;br/&gt;&lt;br/&gt;The NASDAQ-100 Index is modified capitalization-weighted, meaning that companies with larger market capitalizations will contribute more to the Index's value than a company whose securities have a smaller market capitalization.&lt;br/&gt;&lt;br/&gt;The Portfolio will invest primarily in common stocks of the companies that comprise the NASDAQ-100 Index. The Portfolio may also invest in Nasdaq-100 iShares&lt;sup&gt;&amp;#174;&lt;/sup&gt;. Nasdaq-100 iShares&lt;sup&gt;&amp;#174; &lt;/sup&gt;are units of beneficial interest in a unit investment trust, representing proportionate undivided interests in a portfolio of securities in substantially the same weighting as the common stocks that comprise the NASDAQ-100 Index. Derivatives, such as NASDAQ-100 Index options and futures, and options on such futures, may also be held by the Portfolio incidental to its main investment strategy in order to invest uncommitted cash balances, to maintain liquidity to meet shareholder redemptions, or minimize trading costs. The Portfolio may also sell covered calls on futures contracts or individual securities held in the Portfolio.&lt;br/&gt;&lt;br/&gt;Under normal circumstances, the Portfolio will invest at least 80% of its net assets in investments with economic characteristics similar to the stocks represented in the NASDAQ-100 Index. The Portfolio will provide shareholders with at least 60 days' notice before changing this 80% policy. While not required, the Portfolio will generally sell securities that the Index manager removes from the Index. Although the Subadvisor will attempt to invest and maintain as much of the Portfolio's assets as is practical in stocks included among the NASDAQ-100 Index and futures contracts and options relating thereto under normal market conditions, a portion of the Portfolio may be invested in money market instruments pending investment or to meet redemption requests or other needs for liquid assets.&lt;br/&gt;&lt;br/&gt;The Portfolio is non-diversified, which means it may invest a greater percentage of its assets in a particular issuer than a "diversified" fund.</rr:StrategyNarrativeTextBlock>
  <rr:RiskHeading contextRef="Duration_01May2012_30Apr2013S000010994_Member">&lt;b&gt;Principal Risks&lt;/b&gt;</rr:RiskHeading>
  <rr:RiskNarrativeTextBlock contextRef="Duration_01May2012_30Apr2013S000010994_Member">You could lose money on your investment in the Portfolio, or the Portfolio could underperform, because of the risks described below. An investment in the Portfolio is not a bank deposit and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.&lt;br/&gt;&lt;br/&gt;Non-diversification Risk. Because the Portfolio may invest more of its assets in a smaller number of issuers than a diversified fund, the gains or losses on a single stock may have greater impact on the Portfolio than a diversified fund.&lt;br/&gt;&lt;br/&gt;Concentration Risk. A downturn in the industries represented in the NASDAQ-100 Index would impact the Portfolio more than a portfolio that does not concentrate in these industries. By focusing on specific sectors or industries, the Portfolio may be more volatile than a typical mutual fund.&lt;br/&gt;&lt;br/&gt;Management Risk. Individual investments of the Portfolio may not perform as expected, and the portfolio management practices may not achieve the desired result.&lt;br/&gt;&lt;br/&gt;Stock Market Risk. The market prices of stocks held by the Portfolio may fall.&lt;br/&gt;&lt;br/&gt;Index Tracking Risk. An index fund has operating expenses; a market index does not. The Portfolio, while expected to track its target index as closely as possible, will not be able to match the performance of the index exactly.&lt;br/&gt;&lt;br/&gt;Common Stock Risk. Although common stocks have a history of long-term growth in value, their prices fluctuate based on changes in a company's financial condition, on overall market and economic conditions, and on investors' perception of a company's well-being.&lt;br/&gt;&lt;br/&gt;Large-Cap Company Risk. Large-cap companies may be unable to respond quickly to new competitive challenges such as changes in technology, and also may not be able to attain the high growth rate of successful smaller companies, especially during extended periods of economic expansion.&lt;br/&gt;&lt;br/&gt;Risk of Nasdaq-100 iShares&lt;sup&gt;&amp;#174;&lt;/sup&gt;. Nasdaq-100 iShares&lt;sup&gt;&amp;#174; &lt;/sup&gt;are subject to the risk that the stock prices of the companies in the NASDAQ-100 Index may fall. An investment in Nasdaq-100 iShares&lt;sup&gt;&amp;#174; &lt;/sup&gt;may not replicate exactly the performance of the NASDAQ-100 Index for any number of reasons. Shareholders of the Portfolio bear their proportionate share of the operating expenses of the underlying investment as well as their share of the Portfolio's fees and expenses.&lt;br/&gt;&lt;br/&gt;Stock Index Futures and Options Risk. Using stock index futures and options may increase the Portfolio's volatility and may involve a small cash investment relative to the magnitude of risk assumed. If changes in a derivative's value do not correspond to changes in the value of the Portfolio's other investments, the Portfolio may not fully benefit from or could lose money on the derivative position. Derivatives can involve risk of loss if the party who issued the derivative defaults on its obligation. Derivatives may also be less liquid and more difficult to value.</rr:RiskNarrativeTextBlock>
  <rr:BarChartAndPerformanceTableHeading contextRef="Duration_01May2012_30Apr2013S000010994_Member">&lt;b&gt;Performance&lt;/b&gt;</rr:BarChartAndPerformanceTableHeading>
  <rr:PerformanceNarrativeTextBlock contextRef="Duration_01May2012_30Apr2013S000010994_Member">The following bar chart and table show the Portfolio&amp;#8217;s annual returns and its long-term performance, which give some indication of the risks of investing in the Portfolio. The bar chart shows how the performance has varied from year to year. The table compares the Portfolio&amp;#8217;s performance over time with that of a benchmark index and a peer average.&lt;br/&gt;&lt;br/&gt;The Portfolio&amp;#8217;s past performance does not necessarily indicate how the Portfolio will perform in the future. For updated performance information, visit www.calvert.com.&lt;br/&gt;&lt;br/&gt;The returns shown do not reflect fees and charges imposed under the variable annuity contracts and life insurance policies through which an investment may be made. If those fees and charges were included, they would reduce these returns.</rr:PerformanceNarrativeTextBlock>
  <rr:BarChartHeading contextRef="Duration_01May2012_30Apr2013S000010994_Member">&lt;b&gt;Calendar Year Total Returns&lt;/b&gt;</rr:BarChartHeading>
  <rr:PerformanceTableHeading contextRef="Duration_01May2012_30Apr2013S000010994_Member">&lt;b&gt; Average Annual Total Returns&lt;br&gt;(as of 12/31/12)&lt;/b&gt;</rr:PerformanceTableHeading>
  <rr:ExpenseExampleNoRedemptionTableTextBlock contextRef="Duration_01May2012_30Apr2013S000010983_Member">&lt;div style="display:none"&gt;~ http://www.calvert.com/role/ScheduleExpenseExampleNoRedemptionTransposedCalvertVPSRILargeCapValuePortfolio column period compact * ~&lt;/div&gt;</rr:ExpenseExampleNoRedemptionTableTextBlock>
  <rr:ObjectivePrimaryTextBlock contextRef="Duration_01May2012_30Apr2013S000010997_Member">The Portfolio seeks investment results that correspond to the total return performance of the bond market, as represented by the Barclays U.S. Aggregate Bond Index (the &amp;#8220;Barclays Index&amp;#8221;). This objective may be changed by the Portfolio&amp;#8217;s Board of Directors without shareholder approval.</rr:ObjectivePrimaryTextBlock>
  <rr:BarChartClosingTextBlock contextRef="Duration_01May2012_30Apr2013S000010994_Member">&lt;div&gt; &lt;div class="MetaData"&gt; &lt;p style="text-align: center; margin-top: 0px; margin-bottom: 0px;"&gt;&lt;br /&gt;&lt;/p&gt; &lt;div align="left"&gt; &lt;table style="width: 6in;" class="MetaData" border="0" cellspacing="0"&gt; &lt;tr&gt;&lt;td width="47%"&gt;&amp;nbsp;&lt;/td&gt; &lt;td width="14%"&gt;&amp;nbsp;&lt;/td&gt; &lt;td width="4%"&gt;&amp;nbsp;&lt;/td&gt; &lt;td width="11%"&gt;&amp;nbsp;&lt;/td&gt; &lt;td width="4%"&gt;&amp;nbsp;&lt;/td&gt; &lt;td width="12%"&gt;&amp;nbsp;&lt;/td&gt; &lt;td width="4%"&gt;&amp;nbsp;&lt;/td&gt;&lt;/tr&gt; &lt;tr valign="bottom"&gt;&lt;td align="left"&gt;&amp;nbsp;&lt;/td&gt; &lt;td align="right"&gt;&lt;b&gt;Quarter&lt;/b&gt;&lt;/td&gt; &lt;td align="left"&gt;&amp;nbsp;&lt;/td&gt; &lt;td colspan="3" align="right"&gt;&lt;b&gt;Total&lt;/b&gt;&lt;/td&gt; &lt;td align="left"&gt;&amp;nbsp;&lt;/td&gt;&lt;/tr&gt; &lt;tr valign="bottom"&gt;&lt;td align="left"&gt;&amp;nbsp;&lt;/td&gt; &lt;td style="border-bottom: #000000 1px solid;" align="right"&gt;&lt;b&gt;Ended&lt;/b&gt;&lt;/td&gt; &lt;td style="border-bottom: #000000 1px solid;" align="left"&gt;&amp;nbsp;&lt;/td&gt; &lt;td style="border-bottom: #000000 1px solid; text-indent: 6px;" colspan="3" align="right"&gt;&lt;b&gt;Return&lt;/b&gt;&lt;/td&gt; &lt;td style="border-bottom: #000000 1px solid;" align="left"&gt;&amp;nbsp;&lt;/td&gt;&lt;/tr&gt; &lt;tr valign="bottom"&gt;&lt;td style="text-indent: 7px;" align="left"&gt;Best Quarter&amp;nbsp;(of periods shown)&lt;/td&gt; &lt;td align="right"&gt;3/31/12&lt;/td&gt; &lt;td align="left"&gt;&amp;nbsp;&lt;/td&gt; &lt;td colspan="3" align="right"&gt;21.07&lt;/td&gt; &lt;td align="left"&gt;%&lt;/td&gt;&lt;/tr&gt; &lt;tr valign="bottom"&gt;&lt;td style="text-indent: 7px;" align="left"&gt;Worst Quarter&amp;nbsp;(of periods shown)&lt;/td&gt; &lt;td align="right"&gt;12/31/08&lt;/td&gt; &lt;td align="left"&gt;&amp;nbsp;&lt;/td&gt; &lt;td colspan="3" align="right"&gt;-23.94&lt;/td&gt; &lt;td align="left"&gt;%&lt;/td&gt;&lt;/tr&gt; &lt;tr&gt;&lt;td colspan="7"&gt;&amp;nbsp;&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;&lt;/div&gt;&lt;/div&gt; &lt;/div&gt;</rr:BarChartClosingTextBlock>
  <rr:BarChartClosingTextBlock contextRef="Duration_01May2012_30Apr2013S000010983_Member">&lt;p style="text-align: center; margin-top: 0px; margin-bottom: 0px;"&gt;&lt;br /&gt;&lt;/p&gt; &lt;div align="left"&gt; &lt;table style="width: 6in;" class="MetaData" border="0" cellspacing="0"&gt; &lt;tr&gt;&lt;td width="47%"&gt;&amp;nbsp;&lt;/td&gt; &lt;td width="14%"&gt;&amp;nbsp;&lt;/td&gt; &lt;td width="4%"&gt;&amp;nbsp;&lt;/td&gt; &lt;td width="11%"&gt;&amp;nbsp;&lt;/td&gt; &lt;td width="4%"&gt;&amp;nbsp;&lt;/td&gt; &lt;td width="12%"&gt;&amp;nbsp;&lt;/td&gt; &lt;td width="4%"&gt;&amp;nbsp;&lt;/td&gt;&lt;/tr&gt; &lt;tr valign="bottom"&gt;&lt;td align="left"&gt;&amp;nbsp;&lt;/td&gt; &lt;td align="right"&gt;&lt;b&gt;Quarter&lt;/b&gt;&lt;/td&gt; &lt;td align="left"&gt;&amp;nbsp;&lt;/td&gt; &lt;td colspan="3" align="right"&gt;&lt;b&gt;Total&lt;/b&gt;&lt;/td&gt; &lt;td align="left"&gt;&amp;nbsp;&lt;/td&gt;&lt;/tr&gt; &lt;tr valign="bottom"&gt;&lt;td align="left"&gt;&amp;nbsp;&lt;/td&gt; &lt;td style="border-bottom: #000000 1px solid;" align="right"&gt;&lt;b&gt;Ended&lt;/b&gt;&lt;/td&gt; &lt;td style="border-bottom: #000000 1px solid;" align="left"&gt;&amp;nbsp;&lt;/td&gt; &lt;td style="border-bottom: #000000 1px solid; text-indent: 6px;" colspan="3" align="right"&gt;&lt;b&gt;Return&lt;/b&gt;&lt;/td&gt; &lt;td style="border-bottom: #000000 1px solid;" align="left"&gt;&amp;nbsp;&lt;/td&gt;&lt;/tr&gt; &lt;tr valign="bottom"&gt;&lt;td style="text-indent: 7px;" align="left"&gt;&lt;font class="_mt"&gt;Best Quarter (of periods shown)&lt;/font&gt;&lt;/td&gt; &lt;td align="right"&gt;6/30/03&lt;/td&gt; &lt;td align="left"&gt;&amp;nbsp;&lt;/td&gt; &lt;td colspan="3" align="right"&gt;21.36&lt;/td&gt; &lt;td align="left"&gt;%&lt;/td&gt;&lt;/tr&gt; &lt;tr valign="bottom"&gt;&lt;td style="text-indent: 7px;" align="left"&gt;&lt;font class="_mt"&gt;Worst Quarter (of periods shown)&lt;/font&gt;&lt;/td&gt; &lt;td align="right"&gt;12/31/08&lt;/td&gt; &lt;td align="left"&gt;&amp;nbsp;&lt;/td&gt; &lt;td colspan="3" align="right"&gt;-23.81&lt;/td&gt; &lt;td align="left"&gt;%&lt;/td&gt;&lt;/tr&gt; &lt;tr&gt;&lt;td colspan="7"&gt;&amp;nbsp;&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;&lt;/div&gt;</rr:BarChartClosingTextBlock>
  <rr:PortfolioTurnoverRate decimals="4" contextRef="Duration_01May2012_30Apr2013S000010994_Member" unitRef="pure">0.17</rr:PortfolioTurnoverRate>
  <rr:RiskLoseMoney contextRef="Duration_01May2012_30Apr2013S000010994_Member">You could lose money on your investment in the Portfolio, or the Portfolio could underperform, because of the risks described below.</rr:RiskLoseMoney>
  <rr:ShareholderFeesTableTextBlock contextRef="Duration_01May2012_30Apr2013S000010992_MemberClassI_Member">&lt;div style="display:none"&gt;~ http://www.calvert.com/role/ScheduleShareholderFeesCalvertVPSPMidCap400IndexPortfolio column period compact * ~&lt;/div&gt;</rr:ShareholderFeesTableTextBlock>
  <rr:RiskNondiversifiedStatus contextRef="Duration_01May2012_30Apr2013S000010994_Member">Non-diversification Risk. Because the Portfolio may invest more of its assets in a smaller number of issuers than a diversified fund, the gains or losses on a single stock may have greater impact on the Portfolio than a diversified fund.</rr:RiskNondiversifiedStatus>
  <rr:AnnualFundOperatingExpensesTableTextBlock contextRef="Duration_01May2012_30Apr2013S000010992_MemberClassI_Member">&lt;div style="display:none"&gt;~ http://www.calvert.com/role/ScheduleAnnualFundOperatingExpensesCalvertVPSPMidCap400IndexPortfolio column period compact * ~&lt;/div&gt;</rr:AnnualFundOperatingExpensesTableTextBlock>
  <rr:RiskNotInsuredDepositoryInstitution contextRef="Duration_01May2012_30Apr2013S000010994_Member">An investment in the Portfolio is not a bank deposit and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.</rr:RiskNotInsuredDepositoryInstitution>
  <rr:PerformanceInformationIllustratesVariabilityOfReturns contextRef="Duration_01May2012_30Apr2013S000010994_Member">The following bar chart and table show the Portfolio&amp;#8217;s annual returns and its long-term performance, which give some indication of the risks of investing in the Portfolio. The bar chart shows how the performance has varied from year to year. The table compares the Portfolio&amp;#8217;s performance over time with that of a benchmark index and a peer average.</rr:PerformanceInformationIllustratesVariabilityOfReturns>
  <rr:PerformanceAvailabilityWebSiteAddress contextRef="Duration_01May2012_30Apr2013S000010994_Member">www.calvert.com</rr:PerformanceAvailabilityWebSiteAddress>
  <rr:PerformancePastDoesNotIndicateFuture contextRef="Duration_01May2012_30Apr2013S000010994_Member">The Portfolio&amp;#8217;s past performance does not necessarily indicate how the Portfolio will perform in the future.</rr:PerformancePastDoesNotIndicateFuture>
  <rr:BarChartDoesNotReflectSalesLoads contextRef="Duration_01May2012_30Apr2013S000010994_Member">The returns shown do not reflect fees and charges imposed under the variable annuity contracts and life insurance policies through which an investment may be made. If those fees and charges were included, they would reduce these returns.</rr:BarChartDoesNotReflectSalesLoads>
  <rr:HighestQuarterlyReturnLabel contextRef="Duration_01May2012_30Apr2013S000010994_MemberC000030370_Member">Best Quarter (of periods shown)</rr:HighestQuarterlyReturnLabel>
  <rr:BarChartClosingTextBlock contextRef="Duration_01May2012_30Apr2013S000010992_MemberClassI_Member">&lt;p style="text-align: center; margin-top: 0px; margin-bottom: 0px;"&gt;&lt;br /&gt;&lt;/p&gt; &lt;div align="left"&gt; &lt;table style="width: 6in;" class="MetaData" border="0" cellspacing="0"&gt; &lt;tr&gt;&lt;td width="47%"&gt;&amp;nbsp;&lt;/td&gt; &lt;td width="14%"&gt;&amp;nbsp;&lt;/td&gt; &lt;td width="4%"&gt;&amp;nbsp;&lt;/td&gt; &lt;td width="11%"&gt;&amp;nbsp;&lt;/td&gt; &lt;td width="4%"&gt;&amp;nbsp;&lt;/td&gt; &lt;td width="12%"&gt;&amp;nbsp;&lt;/td&gt; &lt;td width="4%"&gt;&amp;nbsp;&lt;/td&gt;&lt;/tr&gt; &lt;tr valign="bottom"&gt;&lt;td align="left"&gt;&amp;nbsp;&lt;/td&gt; &lt;td align="right"&gt;&lt;b&gt;Quarter&lt;/b&gt;&lt;/td&gt; &lt;td align="left"&gt;&amp;nbsp;&lt;/td&gt; &lt;td colspan="3" align="right"&gt;&lt;b&gt;Total&lt;/b&gt;&lt;/td&gt; &lt;td align="left"&gt;&amp;nbsp;&lt;/td&gt;&lt;/tr&gt; &lt;tr valign="bottom"&gt;&lt;td align="left"&gt;&amp;nbsp;&lt;/td&gt; &lt;td style="border-bottom: #000000 1px solid;" align="right"&gt;&lt;b&gt;Ended&lt;/b&gt;&lt;/td&gt; &lt;td style="border-bottom: #000000 1px solid;" align="left"&gt;&amp;nbsp;&lt;/td&gt; &lt;td style="border-bottom: #000000 1px solid; text-indent: 6px;" colspan="3" align="right"&gt;&lt;b&gt;Return&lt;/b&gt;&lt;/td&gt; &lt;td style="border-bottom: #000000 1px solid;" align="left"&gt;&amp;nbsp;&lt;/td&gt;&lt;/tr&gt; &lt;tr valign="bottom"&gt;&lt;td style="text-indent: 7px;" align="left"&gt;&lt;font class="_mt"&gt;Best Quarter (of periods shown)&lt;/font&gt;&lt;/td&gt; &lt;td align="right"&gt;9/30/09&lt;/td&gt; &lt;td align="left"&gt;&amp;nbsp;&lt;/td&gt; &lt;td colspan="3" align="right"&gt;19.74&lt;/td&gt; &lt;td align="left"&gt;%&lt;/td&gt;&lt;/tr&gt; &lt;tr valign="bottom"&gt;&lt;td style="text-indent: 7px;" align="left"&gt;&lt;font class="_mt"&gt;Worst Quarter (of periods shown)&lt;/font&gt;&lt;/td&gt; &lt;td align="right"&gt;12/31/08&lt;/td&gt; &lt;td align="left"&gt;&amp;nbsp;&lt;/td&gt; &lt;td colspan="3" align="right"&gt;-25.93&lt;/td&gt; &lt;td align="left"&gt;%&lt;/td&gt;&lt;/tr&gt; &lt;tr&gt;&lt;td colspan="7"&gt;&amp;nbsp;&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;&lt;/div&gt;</rr:BarChartClosingTextBlock>
  <rr:BarChartHighestQuarterlyReturnDate contextRef="Duration_01May2012_30Apr2013S000010994_MemberC000030370_Member">2012-03-31</rr:BarChartHighestQuarterlyReturnDate>
  <rr:BarChartHighestQuarterlyReturn decimals="4" contextRef="Duration_01May2012_30Apr2013S000010994_MemberC000030370_Member" unitRef="pure">0.2107</rr:BarChartHighestQuarterlyReturn>
  <rr:LowestQuarterlyReturnLabel contextRef="Duration_01May2012_30Apr2013S000010994_MemberC000030370_Member">Worst Quarter (of periods shown)</rr:LowestQuarterlyReturnLabel>
  <rr:BarChartLowestQuarterlyReturnDate contextRef="Duration_01May2012_30Apr2013S000010994_MemberC000030370_Member">2008-12-31</rr:BarChartLowestQuarterlyReturnDate>
  <rr:BarChartClosingTextBlock contextRef="Duration_01May2012_30Apr2013S000010991_Member">&lt;p style="text-align: center; margin-top: 0px; margin-bottom: 0px;"&gt;&lt;br /&gt;&lt;/p&gt; &lt;div align="left"&gt; &lt;table style="width: 6in;" class="MetaData" border="0" cellspacing="0"&gt; &lt;tr&gt;&lt;td width="47%"&gt;&amp;nbsp;&lt;/td&gt; &lt;td width="14%"&gt;&amp;nbsp;&lt;/td&gt; &lt;td width="4%"&gt;&amp;nbsp;&lt;/td&gt; &lt;td width="11%"&gt;&amp;nbsp;&lt;/td&gt; &lt;td width="4%"&gt;&amp;nbsp;&lt;/td&gt; &lt;td width="12%"&gt;&amp;nbsp;&lt;/td&gt; &lt;td width="4%"&gt;&amp;nbsp;&lt;/td&gt;&lt;/tr&gt; &lt;tr valign="bottom"&gt;&lt;td align="left"&gt;&amp;nbsp;&lt;/td&gt; &lt;td align="right"&gt;&lt;b&gt;Quarter&lt;/b&gt;&lt;/td&gt; &lt;td align="left"&gt;&amp;nbsp;&lt;/td&gt; &lt;td colspan="3" align="right"&gt;&lt;b&gt;Total&lt;/b&gt;&lt;/td&gt; &lt;td align="left"&gt;&amp;nbsp;&lt;/td&gt;&lt;/tr&gt; &lt;tr valign="bottom"&gt;&lt;td align="left"&gt;&amp;nbsp;&lt;/td&gt; &lt;td style="border-bottom: #000000 1px solid;" align="right"&gt;&lt;b&gt;Ended&lt;/b&gt;&lt;/td&gt; &lt;td style="border-bottom: #000000 1px solid;" align="left"&gt;&amp;nbsp;&lt;/td&gt; &lt;td style="border-bottom: #000000 1px solid; text-indent: 6px;" colspan="3" align="right"&gt;&lt;b&gt;Return&lt;/b&gt;&lt;/td&gt; &lt;td style="border-bottom: #000000 1px solid;" align="left"&gt;&amp;nbsp;&lt;/td&gt;&lt;/tr&gt; &lt;tr valign="bottom"&gt;&lt;td style="text-indent: 7px;" align="left"&gt;&lt;font class="_mt"&gt;Best Quarter (of periods shown)&lt;/font&gt;&lt;/td&gt; &lt;td align="right"&gt;6/30/09&lt;/td&gt; &lt;td align="left"&gt;&amp;nbsp;&lt;/td&gt; &lt;td colspan="3" align="right"&gt;15.85&lt;/td&gt; &lt;td align="left"&gt;%&lt;/td&gt;&lt;/tr&gt; &lt;tr valign="bottom"&gt;&lt;td style="text-indent: 7px;" align="left"&gt;&lt;font class="_mt"&gt;Worst Quarter (of periods shown)&lt;/font&gt;&lt;/td&gt; &lt;td align="right"&gt;12/31/08&lt;/td&gt; &lt;td align="left"&gt;&amp;nbsp;&lt;/td&gt; &lt;td colspan="3" align="right"&gt;-21.91&lt;/td&gt; &lt;td align="left"&gt;%&lt;/td&gt;&lt;/tr&gt; &lt;tr&gt;&lt;td colspan="7"&gt;&amp;nbsp;&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;&lt;/div&gt;</rr:BarChartClosingTextBlock>
  <rr:BarChartLowestQuarterlyReturn decimals="4" contextRef="Duration_01May2012_30Apr2013S000010994_MemberC000030370_Member" unitRef="pure">-0.2394</rr:BarChartLowestQuarterlyReturn>
  <rr:PerformanceTableTextBlock contextRef="Duration_01May2012_30Apr2013S000010991_Member">&lt;div style="display:none"&gt;~ http://www.calvert.com/role/ScheduleAverageAnnualTotalReturnsTransposedCalvertVPSP500IndexPortfolio column period compact * ~&lt;/div&gt;</rr:PerformanceTableTextBlock>
  <rr:ExpenseExampleWithRedemptionTableTextBlock contextRef="Duration_01May2012_30Apr2013S000010992_MemberClassI_Member">&lt;div style="display:none"&gt;~ http://www.calvert.com/role/ScheduleExpenseExampleTransposedCalvertVPSPMidCap400IndexPortfolio column period compact * ~&lt;/div&gt;</rr:ExpenseExampleWithRedemptionTableTextBlock>
  <rr:BarChartTableTextBlock contextRef="Duration_01May2012_30Apr2013S000010991_Member">&lt;div style="display:none"&gt;~ http://www.calvert.com/role/ScheduleAnnualTotalReturnsCalvertVPSP500IndexPortfolioBarChart column period compact * ~&lt;/div&gt;</rr:BarChartTableTextBlock>
  <rr:ExpenseExampleNoRedemptionTableTextBlock contextRef="Duration_01May2012_30Apr2013S000010992_MemberClassI_Member">&lt;div style="display:none"&gt;~ http://www.calvert.com/role/ScheduleExpenseExampleNoRedemptionTransposedCalvertVPSPMidCap400IndexPortfolio column period compact * ~&lt;/div&gt;</rr:ExpenseExampleNoRedemptionTableTextBlock>
  <rr:ExpenseExampleWithRedemptionTableTextBlock contextRef="Duration_01May2012_30Apr2013S000010991_Member">&lt;div style="display:none"&gt;~ http://www.calvert.com/role/ScheduleExpenseExampleTransposedCalvertVPSP500IndexPortfolio column period compact * ~&lt;/div&gt;</rr:ExpenseExampleWithRedemptionTableTextBlock>
  <rr:AnnualFundOperatingExpensesTableTextBlock contextRef="Duration_01May2012_30Apr2013S000010991_Member">&lt;div style="display:none"&gt;~ http://www.calvert.com/role/ScheduleAnnualFundOperatingExpensesCalvertVPSP500IndexPortfolio column period compact * ~&lt;/div&gt;</rr:AnnualFundOperatingExpensesTableTextBlock>
  <rr:BarChartTableTextBlock contextRef="Duration_01May2012_30Apr2013S000010992_MemberClassI_Member">&lt;div style="display:none"&gt;~ http://www.calvert.com/role/ScheduleAnnualTotalReturnsCalvertVPSPMidCap400IndexPortfolioBarChart column period compact * ~&lt;/div&gt;</rr:BarChartTableTextBlock>
  <rr:ShareholderFeesTableTextBlock contextRef="Duration_01May2012_30Apr2013S000010991_Member">&lt;div style="display:none"&gt;~ http://www.calvert.com/role/ScheduleShareholderFeesCalvertVPSP500IndexPortfolio column period compact * ~&lt;/div&gt;</rr:ShareholderFeesTableTextBlock>
  <rr:PerformanceTableTextBlock contextRef="Duration_01May2012_30Apr2013S000010992_MemberClassI_Member">&lt;div style="display:none"&gt;~ http://www.calvert.com/role/ScheduleAverageAnnualTotalReturnsTransposedCalvertVPSPMidCap400IndexPortfolio column period compact * ~&lt;/div&gt;</rr:PerformanceTableTextBlock>
  <rr:RiskReturnHeading contextRef="Duration_01May2012_30Apr2013S000015009_Member">&lt;b&gt;CALVERT VP NATURAL RESOURCES PORTFOLIO	&lt;/b&gt;</rr:RiskReturnHeading>
  <rr:ObjectivePrimaryTextBlock contextRef="Duration_01May2012_30Apr2013S000015009_Member">The Portfolio seeks primarily to provide capital growth, consistent with appropriate risk levels, by investing primarily in a portfolio of various exchange traded funds (&amp;#8220;ETFs&amp;#8221;) and exchange traded notes (&amp;#8220;ETNs&amp;#8221;) representing different natural resources exposures. This objective may be changed by the Portfolio&amp;#8217;s Board of Directors without shareholder approval.</rr:ObjectivePrimaryTextBlock>
  <rr:ExpenseNarrativeTextBlock contextRef="Duration_01May2012_30Apr2013S000015009_Member">This table describes the fees and expenses that you may pay if you invest in shares of the Portfolio. &lt;br/&gt;&lt;br/&gt;The table and the following example do not reflect fees and charges imposed under the variable annuity contracts and life insurance policies (each a &amp;#8220;Policy&amp;#8221;) through which an investment may be made. If those fees and charges were included, costs would be higher. Please consult the prospectus for your Policy for information regarding those fees and charges.</rr:ExpenseNarrativeTextBlock>
  <rr:ObjectiveHeading contextRef="Duration_01May2012_30Apr2013S000015009_Member">&lt;b&gt;INVESTMENT OBJECTIVE&lt;/b&gt;</rr:ObjectiveHeading>
  <rr:ExpenseHeading contextRef="Duration_01May2012_30Apr2013S000015009_Member">&lt;b&gt;FEES AND EXPENSES OF THE PORTFOLIO&lt;/b&gt;</rr:ExpenseHeading>
  <rr:ShareholderFeesCaption contextRef="Duration_01May2012_30Apr2013S000015009_Member">&lt;b&gt;Shareholder Fees&lt;/b&gt; (fees paid directly from your investment)</rr:ShareholderFeesCaption>
  <rr:OperatingExpensesCaption contextRef="Duration_01May2012_30Apr2013S000015009_Member">&lt;b&gt;Annual Fund Operating Expenses&lt;/b&gt; (expenses that you pay each year as&lt;br/&gt;a % of the value of your investment)</rr:OperatingExpensesCaption>
  <rr:ExpenseExampleHeading contextRef="Duration_01May2012_30Apr2013S000015009_Member">&lt;b&gt;Example&lt;/b&gt;</rr:ExpenseExampleHeading>
  <rr:PortfolioTurnoverHeading contextRef="Duration_01May2012_30Apr2013S000015009_Member">&lt;b&gt;Portfolio Turnover &lt;/b&gt;</rr:PortfolioTurnoverHeading>
  <rr:PortfolioTurnoverTextBlock contextRef="Duration_01May2012_30Apr2013S000015009_Member">The Portfolio pays transaction costs, such as commissions, when it buys and sells securities (&amp;#8220;turns over&amp;#8221; its portfolio). A higher portfolio turnover rate may indicate higher transaction costs. These costs, which are not reflected in annual fund operating expenses or in the &amp;#8220;Example&amp;#8221;, affect the Portfolio&amp;#8217;s performance. During the most recent fiscal year, the Portfolio&amp;#8217;s portfolio turnover rate was 37% of its portfolio&amp;#8217;s average value.</rr:PortfolioTurnoverTextBlock>
  <rr:MaximumSalesChargeImposedOnPurchasesOverOfferingPrice decimals="4" contextRef="Duration_01May2012_30Apr2013S000015005_MemberC000040846_Member" unitRef="pure">0</rr:MaximumSalesChargeImposedOnPurchasesOverOfferingPrice>
  <rr:MaximumDeferredSalesChargeOverOfferingPrice decimals="4" contextRef="Duration_01May2012_30Apr2013S000015005_MemberC000040846_Member" unitRef="pure">0</rr:MaximumDeferredSalesChargeOverOfferingPrice>
  <rr:StrategyHeading contextRef="Duration_01May2012_30Apr2013S000015009_Member">&lt;b&gt;INVESTMENTS, RISKS AND PERFORMANCE &lt;/b&gt;&lt;br/&gt;&lt;br/&gt;&lt;b&gt;Principal Investment Strategies&lt;/b&gt;</rr:StrategyHeading>
  <rr:RiskHeading contextRef="Duration_01May2012_30Apr2013S000015009_Member">&lt;b&gt;Principal Risks&lt;/b&gt;</rr:RiskHeading>
  <rr:BarChartAndPerformanceTableHeading contextRef="Duration_01May2012_30Apr2013S000015009_Member">&lt;b&gt;Performance&lt;/b&gt;</rr:BarChartAndPerformanceTableHeading>
  <rr:ManagementFeesOverAssets decimals="4" contextRef="Duration_01May2012_30Apr2013S000015005_MemberC000040846_Member" unitRef="pure">0.006</rr:ManagementFeesOverAssets>
  <rr:PerformanceTableHeading contextRef="Duration_01May2012_30Apr2013S000015009_Member">&lt;b&gt;Average Annual Total Returns&lt;br/&gt;&lt;b&gt;(as of 12/31/12)&lt;/b&gt;</rr:PerformanceTableHeading>
  <rr:ExpenseExampleNoRedemptionTableTextBlock contextRef="Duration_01May2012_30Apr2013S000010991_Member">&lt;div style="display:none"&gt;~ http://www.calvert.com/role/ScheduleExpenseExampleNoRedemptionTransposedCalvertVPSP500IndexPortfolio column period compact * ~&lt;/div&gt;</rr:ExpenseExampleNoRedemptionTableTextBlock>
  <rr:OtherExpensesOverAssets decimals="4" contextRef="Duration_01May2012_30Apr2013S000015005_MemberC000040846_Member" unitRef="pure">0.0011</rr:OtherExpensesOverAssets>
  <rr:ExpensesOverAssets decimals="4" contextRef="Duration_01May2012_30Apr2013S000015005_MemberC000040846_Member" unitRef="pure">0.0071</rr:ExpensesOverAssets>
  <rr:BarChartHeading contextRef="Duration_01May2012_30Apr2013S000015009_Member">&lt;b&gt;Calender Year Total Returns&lt;/b&gt;</rr:BarChartHeading>
  <rr:AverageAnnualReturnYear01 decimals="4" contextRef="Duration_01May2012_30Apr2013S000010994_MemberC000030370_Member" unitRef="pure">0.1762</rr:AverageAnnualReturnYear01>
  <rr:AverageAnnualReturnYear01 decimals="4" contextRef="Duration_01May2012_30Apr2013S000010994_MemberNasdaqOneHundredIndex_Member" unitRef="pure">0.1682</rr:AverageAnnualReturnYear01>
  <rr:AverageAnnualReturnYear01 decimals="4" contextRef="Duration_01May2012_30Apr2013S000010994_MemberNasdaqOneHundredIndexTotalReturn_Member" unitRef="pure">0.1835</rr:AverageAnnualReturnYear01>
  <rr:AverageAnnualReturnYear01 decimals="4" contextRef="Duration_01May2012_30Apr2013S000010994_MemberLipperVaLargeCapGrowthFundsAverage_Member" unitRef="pure">0.16</rr:AverageAnnualReturnYear01>
  <rr:AverageAnnualReturnYear05 decimals="4" contextRef="Duration_01May2012_30Apr2013S000010994_MemberC000030370_Member" unitRef="pure">0.0527</rr:AverageAnnualReturnYear05>
  <rr:AverageAnnualReturnYear05 decimals="4" contextRef="Duration_01May2012_30Apr2013S000010994_MemberNasdaqOneHundredIndex_Member" unitRef="pure">0.05</rr:AverageAnnualReturnYear05>
  <rr:AverageAnnualReturnYear05 decimals="4" contextRef="Duration_01May2012_30Apr2013S000010994_MemberNasdaqOneHundredIndexTotalReturn_Member" unitRef="pure">0.0589</rr:AverageAnnualReturnYear05>
  <rr:AverageAnnualReturnYear05 decimals="4" contextRef="Duration_01May2012_30Apr2013S000010994_MemberLipperVaLargeCapGrowthFundsAverage_Member" unitRef="pure">0.0145</rr:AverageAnnualReturnYear05>
  <rr:AverageAnnualReturnYear10 decimals="4" contextRef="Duration_01May2012_30Apr2013S000010994_MemberC000030370_Member" unitRef="pure">0.1048</rr:AverageAnnualReturnYear10>
  <rr:AverageAnnualReturnYear10 decimals="4" contextRef="Duration_01May2012_30Apr2013S000010994_MemberNasdaqOneHundredIndex_Member" unitRef="pure">0.1046</rr:AverageAnnualReturnYear10>
  <rr:AverageAnnualReturnYear10 xsi:nil="true" contextRef="Duration_01May2012_30Apr2013S000010994_MemberNasdaqOneHundredIndexTotalReturn_Member" unitRef="pure" />
  <rr:AverageAnnualReturnYear10 decimals="4" contextRef="Duration_01May2012_30Apr2013S000010994_MemberLipperVaLargeCapGrowthFundsAverage_Member" unitRef="pure">0.0723</rr:AverageAnnualReturnYear10>
  <rr:PortfolioTurnoverRate decimals="4" contextRef="Duration_01May2012_30Apr2013S000010992_MemberClassI_Member" unitRef="pure">0.1</rr:PortfolioTurnoverRate>
  <rr:RiskLoseMoney contextRef="Duration_01May2012_30Apr2013S000010992_MemberClassI_Member">You could lose money on your investment in the Portfolio, or the Portfolio could underperform, because of the risks described below.</rr:RiskLoseMoney>
  <rr:BarChartClosingTextBlock contextRef="Duration_01May2012_30Apr2013S000015009_Member">&lt;div align="left"&gt; &lt;table style="width: 6in;" class="MetaData" border="0" cellspacing="0"&gt; &lt;tr&gt;&lt;td width="47%"&gt;&amp;nbsp;&lt;/td&gt; &lt;td width="14%"&gt;&amp;nbsp;&lt;/td&gt; &lt;td width="4%"&gt;&amp;nbsp;&lt;/td&gt; &lt;td width="11%"&gt;&amp;nbsp;&lt;/td&gt; &lt;td width="4%"&gt;&amp;nbsp;&lt;/td&gt; &lt;td width="12%"&gt;&amp;nbsp;&lt;/td&gt; &lt;td width="4%"&gt;&amp;nbsp;&lt;/td&gt;&lt;/tr&gt; &lt;tr valign="bottom"&gt;&lt;td align="left"&gt;&amp;nbsp;&lt;/td&gt; &lt;td align="right"&gt;&lt;b&gt;Quarter&lt;/b&gt;&lt;/td&gt; &lt;td align="left"&gt;&amp;nbsp;&lt;/td&gt; &lt;td colspan="3" align="right"&gt;&lt;b&gt;Total&lt;/b&gt;&lt;/td&gt; &lt;td align="left"&gt;&amp;nbsp;&lt;/td&gt;&lt;/tr&gt; &lt;tr valign="bottom"&gt;&lt;td align="left"&gt;&amp;nbsp;&lt;/td&gt; &lt;td style="border-bottom: #000000 1px solid;" align="right"&gt;&lt;b&gt;Ended&lt;/b&gt;&lt;/td&gt; &lt;td style="border-bottom: #000000 1px solid;" align="left"&gt;&amp;nbsp;&lt;/td&gt; &lt;td style="border-bottom: #000000 1px solid; text-indent: 6px;" colspan="3" align="right"&gt;&lt;b&gt;Return&lt;/b&gt;&lt;/td&gt; &lt;td style="border-bottom: #000000 1px solid;" align="left"&gt;&amp;nbsp;&lt;/td&gt;&lt;/tr&gt; &lt;tr valign="bottom"&gt;&lt;td style="text-indent: 7px;" align="left"&gt;&lt;font class="_mt"&gt;Best Quarter (of periods shown)&lt;/font&gt;&lt;/td&gt; &lt;td align="right"&gt;12/31/10&lt;/td&gt; &lt;td align="left"&gt;&amp;nbsp;&lt;/td&gt; &lt;td colspan="3" align="right"&gt;16.07&lt;/td&gt; &lt;td align="left"&gt;%&lt;/td&gt;&lt;/tr&gt; &lt;tr valign="bottom"&gt;&lt;td style="text-indent: 7px;" align="left"&gt;&lt;font class="_mt"&gt;Worst Quarter (of periods shown)&lt;/font&gt;&lt;/td&gt; &lt;td align="right"&gt;12/31/08	&lt;/td&gt; &lt;td align="left"&gt;&amp;nbsp;&lt;/td&gt; &lt;td colspan="3" align="right"&gt;-31.33&lt;/td&gt; &lt;td align="left"&gt;%&lt;/td&gt;&lt;/tr&gt; &lt;tr&gt;&lt;td colspan="7"&gt;&amp;nbsp;&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;&lt;/div&gt;</rr:BarChartClosingTextBlock>
  <rr:RiskNotInsuredDepositoryInstitution contextRef="Duration_01May2012_30Apr2013S000010992_MemberClassI_Member">An investment in the Portfolio is not a bank deposit and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.</rr:RiskNotInsuredDepositoryInstitution>
  <rr:PerformanceInformationIllustratesVariabilityOfReturns contextRef="Duration_01May2012_30Apr2013S000010992_MemberClassI_Member">The following bar chart and table show the Portfolio&amp;#8217;s annual returns and its long-term performance, which give some indication of the risks of investing in the Portfolio. The bar chart shows how the performance has varied from year to year. The table compares the Portfolio&amp;#8217;s performance over time with that of a benchmark index and a peer average.</rr:PerformanceInformationIllustratesVariabilityOfReturns>
  <rr:PerformanceAvailabilityWebSiteAddress contextRef="Duration_01May2012_30Apr2013S000010992_MemberClassI_Member">www.calvert.com</rr:PerformanceAvailabilityWebSiteAddress>
  <rr:PerformancePastDoesNotIndicateFuture contextRef="Duration_01May2012_30Apr2013S000010992_MemberClassI_Member">The Portfolio&amp;#8217;s past performance does not necessarily indicate how the Portfolio will perform in the future.</rr:PerformancePastDoesNotIndicateFuture>
  <rr:BarChartDoesNotReflectSalesLoads contextRef="Duration_01May2012_30Apr2013S000010992_MemberClassI_Member">The returns shown do not reflect fees and charges imposed under the variable annuity contracts and life insurance policies through which an investment may be made. If those fees and charges were included, they would reduce these returns.</rr:BarChartDoesNotReflectSalesLoads>
  <rr:ExpenseExampleYear01 decimals="INF" contextRef="Duration_01May2012_30Apr2013S000015005_MemberC000040846_Member" unitRef="USD">73</rr:ExpenseExampleYear01>
  <rr:ExpenseExampleYear03 decimals="INF" contextRef="Duration_01May2012_30Apr2013S000015005_MemberC000040846_Member" unitRef="USD">227</rr:ExpenseExampleYear03>
  <rr:ExpenseExampleYear05 decimals="INF" contextRef="Duration_01May2012_30Apr2013S000015005_MemberC000040846_Member" unitRef="USD">395</rr:ExpenseExampleYear05>
  <rr:ExpenseExampleYear10 decimals="INF" contextRef="Duration_01May2012_30Apr2013S000015005_MemberC000040846_Member" unitRef="USD">883</rr:ExpenseExampleYear10>
  <rr:HighestQuarterlyReturnLabel contextRef="Duration_01May2012_30Apr2013S000010992_MemberC000030368_MemberClassI_Member">Best Quarter (of periods shown)</rr:HighestQuarterlyReturnLabel>
  <rr:BarChartHighestQuarterlyReturnDate contextRef="Duration_01May2012_30Apr2013S000010992_MemberC000030368_MemberClassI_Member">2009-09-30</rr:BarChartHighestQuarterlyReturnDate>
  <rr:BarChartHighestQuarterlyReturn decimals="4" contextRef="Duration_01May2012_30Apr2013S000010992_MemberC000030368_MemberClassI_Member" unitRef="pure">0.1974</rr:BarChartHighestQuarterlyReturn>
  <rr:LowestQuarterlyReturnLabel contextRef="Duration_01May2012_30Apr2013S000010992_MemberC000030368_MemberClassI_Member">Worst Quarter (of periods shown)</rr:LowestQuarterlyReturnLabel>
  <rr:BarChartLowestQuarterlyReturnDate contextRef="Duration_01May2012_30Apr2013S000010992_MemberC000030368_MemberClassI_Member">2008-12-31</rr:BarChartLowestQuarterlyReturnDate>
  <rr:BarChartLowestQuarterlyReturn decimals="4" contextRef="Duration_01May2012_30Apr2013S000010992_MemberC000030368_MemberClassI_Member" unitRef="pure">-0.2593</rr:BarChartLowestQuarterlyReturn>
  <rr:ExpenseExampleNoRedemptionYear01 decimals="INF" contextRef="Duration_01May2012_30Apr2013S000015005_MemberC000040846_Member" unitRef="USD">73</rr:ExpenseExampleNoRedemptionYear01>
  <rr:ExpenseExampleNoRedemptionYear03 decimals="INF" contextRef="Duration_01May2012_30Apr2013S000015005_MemberC000040846_Member" unitRef="USD">227</rr:ExpenseExampleNoRedemptionYear03>
  <rr:ExpenseExampleNoRedemptionYear05 decimals="INF" contextRef="Duration_01May2012_30Apr2013S000015005_MemberC000040846_Member" unitRef="USD">395</rr:ExpenseExampleNoRedemptionYear05>
  <rr:ExpenseExampleNoRedemptionYear10 decimals="INF" contextRef="Duration_01May2012_30Apr2013S000015005_MemberC000040846_Member" unitRef="USD">883</rr:ExpenseExampleNoRedemptionYear10>
  <rr:AnnualReturn2007 decimals="4" contextRef="Duration_01May2012_30Apr2013S000015005_MemberC000040846_Member" unitRef="pure">0.1079</rr:AnnualReturn2007>
  <rr:AnnualReturn2008 decimals="4" contextRef="Duration_01May2012_30Apr2013S000015005_MemberC000040846_Member" unitRef="pure">-0.0233</rr:AnnualReturn2008>
  <rr:AnnualReturn2009 decimals="4" contextRef="Duration_01May2012_30Apr2013S000015005_MemberC000040846_Member" unitRef="pure">0.0762</rr:AnnualReturn2009>
  <rr:AnnualReturn2010 decimals="4" contextRef="Duration_01May2012_30Apr2013S000015005_MemberC000040846_Member" unitRef="pure">0.0633</rr:AnnualReturn2010>
  <rr:AnnualReturn2011 decimals="4" contextRef="Duration_01May2012_30Apr2013S000015005_MemberC000040846_Member" unitRef="pure">0.1041</rr:AnnualReturn2011>
  <rr:AnnualReturn2012 decimals="4" contextRef="Duration_01May2012_30Apr2013S000015005_MemberC000040846_Member" unitRef="pure">0.0773</rr:AnnualReturn2012>
  <rr:AnnualReturn2003 decimals="4" contextRef="Duration_01May2012_30Apr2013S000010994_MemberC000030370_Member" unitRef="pure">0.4864</rr:AnnualReturn2003>
  <rr:AnnualReturn2004 decimals="4" contextRef="Duration_01May2012_30Apr2013S000010994_MemberC000030370_Member" unitRef="pure">0.1009</rr:AnnualReturn2004>
  <rr:AnnualReturn2005 decimals="4" contextRef="Duration_01May2012_30Apr2013S000010994_MemberC000030370_Member" unitRef="pure">0.013</rr:AnnualReturn2005>
  <rr:AnnualReturn2006 decimals="4" contextRef="Duration_01May2012_30Apr2013S000010994_MemberC000030370_Member" unitRef="pure">0.0667</rr:AnnualReturn2006>
  <rr:AnnualReturn2007 decimals="4" contextRef="Duration_01May2012_30Apr2013S000010994_MemberC000030370_Member" unitRef="pure">0.185</rr:AnnualReturn2007>
  <rr:AnnualReturn2008 decimals="4" contextRef="Duration_01May2012_30Apr2013S000010994_MemberC000030370_Member" unitRef="pure">-0.4189</rr:AnnualReturn2008>
  <rr:AnnualReturn2009 decimals="4" contextRef="Duration_01May2012_30Apr2013S000010994_MemberC000030370_Member" unitRef="pure">0.5351</rr:AnnualReturn2009>
  <rr:AnnualReturn2010 decimals="4" contextRef="Duration_01May2012_30Apr2013S000010994_MemberC000030370_Member" unitRef="pure">0.1961</rr:AnnualReturn2010>
  <rr:AnnualReturn2011 decimals="4" contextRef="Duration_01May2012_30Apr2013S000010994_MemberC000030370_Member" unitRef="pure">0.0302</rr:AnnualReturn2011>
  <rr:AnnualReturn2012 decimals="4" contextRef="Duration_01May2012_30Apr2013S000010994_MemberC000030370_Member" unitRef="pure">0.1762</rr:AnnualReturn2012>
  <rr:AverageAnnualReturnYear01 decimals="4" contextRef="Duration_01May2012_30Apr2013S000015005_MemberBarclaysUsTipsIndex_Member" unitRef="pure">0.0698</rr:AverageAnnualReturnYear01>
  <rr:AverageAnnualReturnYear01 decimals="4" contextRef="Duration_01May2012_30Apr2013S000015005_MemberLipperVaInflationProtectedBondFundsAverage_Member" unitRef="pure">0.0737</rr:AverageAnnualReturnYear01>
  <rr:AverageAnnualReturnYear01 decimals="4" contextRef="Duration_01May2012_30Apr2013S000015005_MemberC000040846_Member" unitRef="pure">0.0773</rr:AverageAnnualReturnYear01>
  <rr:AverageAnnualReturnYear05 decimals="4" contextRef="Duration_01May2012_30Apr2013S000015005_MemberC000040846_Member" unitRef="pure">0.0586</rr:AverageAnnualReturnYear05>
  <rr:AverageAnnualReturnYear05 decimals="4" contextRef="Duration_01May2012_30Apr2013S000015005_MemberBarclaysUsTipsIndex_Member" unitRef="pure">0.0704</rr:AverageAnnualReturnYear05>
  <rr:AverageAnnualReturnYear05 decimals="4" contextRef="Duration_01May2012_30Apr2013S000015005_MemberLipperVaInflationProtectedBondFundsAverage_Member" unitRef="pure">0.0684</rr:AverageAnnualReturnYear05>
  <rr:AverageAnnualReturnSinceInception id="Item_5" xsi:nil="true" contextRef="Duration_01May2012_30Apr2013S000015005_MemberLipperVaInflationProtectedBondFundsAverage_Member" unitRef="pure" />
  <rr:AverageAnnualReturnSinceInception decimals="4" contextRef="Duration_01May2012_30Apr2013S000015005_MemberBarclaysUsTipsIndex_Member" unitRef="pure">0.0778</rr:AverageAnnualReturnSinceInception>
  <rr:AverageAnnualReturnSinceInception decimals="4" contextRef="Duration_01May2012_30Apr2013S000015005_MemberC000040846_Member" unitRef="pure">0.0668</rr:AverageAnnualReturnSinceInception>
  <rr:AverageAnnualReturnInceptionDate contextRef="Duration_01May2012_30Apr2013S000015005_MemberC000040846_Member">2006-12-28</rr:AverageAnnualReturnInceptionDate>
  <rr:RiskReturnHeading contextRef="Duration_01May2012_30Apr2013S000010997_Member">&lt;b&gt;CALVERT VP INVESTMENT GRADE BOND&lt;br/&gt;INDEX PORTFOLIO*&lt;/b&gt;&lt;br/&gt;&lt;br/&gt;*Formerly named Calvert VP Barclays Capital Aggregate Bond Index Portfolio</rr:RiskReturnHeading>
  <rr:ObjectiveHeading contextRef="Duration_01May2012_30Apr2013S000010997_Member">&lt;b&gt;INVESTMENT OBJECTIVE&lt;/b&gt;</rr:ObjectiveHeading>
  <rr:ExpenseHeading contextRef="Duration_01May2012_30Apr2013S000010997_Member">&lt;b&gt;FEES AND EXPENSES OF THE PORTFOLIO&lt;b&gt;</rr:ExpenseHeading>
  <rr:ExpenseNarrativeTextBlock contextRef="Duration_01May2012_30Apr2013S000010997_Member">This table describes the fees and expenses that you may pay if you invest in shares of the Portfolio.&lt;br/&gt;&lt;br/&gt;The table and the following example do not reflect fees and charges imposed under the variable annuity contracts and life insurance policies (each a &amp;#8220;Policy&amp;#8221;) through which an investment may be made. If those fees and charges were included, costs would be higher. Please consult the prospectus for your Policy for information regarding those fees and charges.</rr:ExpenseNarrativeTextBlock>
  <rr:ShareholderFeesCaption contextRef="Duration_01May2012_30Apr2013S000010997_Member">&lt;b&gt;Shareholder Fees &lt;/b&gt;(fees paid directly from your investment)</rr:ShareholderFeesCaption>
  <rr:StrategyNarrativeTextBlock contextRef="Duration_01May2012_30Apr2013S000010992_MemberClassI_Member">The Portfolio seeks to substantially replicate the total return of the securities comprising the S&amp;#38;P MidCap 400 Index, taking into consideration redemptions, sales of additional shares, and other adjustments described below. The S&amp;#38;P MidCap 400 Index is an unmanaged index comprised of 400 common stocks of mid-sized U.S. companies that aims to include 7% of the value of the domestic equity markets. As of December 31, 2012, the market capitalization of the S&amp;#38;P MidCap 400 Index companies ranged from $403.7 million to $16.6 billion with a weighted median level of $3.7 billion and a weighted average level of $4.2 billion. The S&amp;#38;P MidCap 400 Index is capitalization-weighted, meaning that companies with larger market capitalizations will contribute more to the Index's value than companies with smaller market capitalizations.&lt;br/&gt;&lt;br/&gt;The Portfolio will invest primarily in stocks of the companies that comprise the S&amp;#38;P MidCap 400 Index. The Portfolio may also invest in Standard &amp;#38; Poor's MidCap Depositary Receipts&lt;sup&gt;&amp;#174; &lt;/sup&gt;("MidCap SPDRs&lt;sup&gt;&amp;#174;&lt;/sup&gt;") or other investment companies that provide exposure to the S&amp;#38;P MidCap 400 Index. MidCap SPDRs&lt;sup&gt;&amp;#174; &lt;/sup&gt;are units of beneficial interest in a unit investment trust, representing proportionate undivided interests in a portfolio of securities in substantially the same weighting as the common stocks that comprise the S&amp;#38;P MidCap 400 Index. Derivatives, such as options, futures, and options on futures, may also be held by the Portfolio incidental to its main investment strategy.&lt;br/&gt;&lt;br/&gt;Under normal circumstances, the Portfolio will invest at least 80% of its net assets in investments with economic characteristics similar to midcap stocks as represented in the S&amp;#38;P MidCap 400 Index. The Portfolio will provide shareholders with at least 60 days' notice before changing this 80% policy. While not required, the Portfolio will generally sell securities that the Index manager removes from the Index. Although the Subadvisor will attempt to invest and maintain as much of the Portfolio's assets as is practical in stocks included among the S&amp;#38;P MidCap 400 Index and futures contracts and options relating thereto under normal market conditions, a portion of the Portfolio may be invested in money market instruments pending investment or to meet redemption requests or other needs for liquid assets.</rr:StrategyNarrativeTextBlock>
  <rr:OperatingExpensesCaption contextRef="Duration_01May2012_30Apr2013S000010997_Member">&lt;b&gt;Annual Fund Operating Expenses&lt;/b&gt; (expenses that you pay each year as&lt;br/&gt;a % of the value of your investment)</rr:OperatingExpensesCaption>
  <rr:ExpenseExampleHeading contextRef="Duration_01May2012_30Apr2013S000010997_Member">&lt;b&gt;Example&lt;/b&gt;</rr:ExpenseExampleHeading>
  <rr:ExpenseExampleNarrativeTextBlock contextRef="Duration_01May2012_30Apr2013S000010997_Member">This example is intended to help you compare the cost of investing in the Portfolio with the cost of investing in other mutual funds. The example assumes that:&lt;ul type="square"&gt;&lt;li style="margin-left:-20px"&gt;you invest $10,000 in the Portfolio for the time periods indicated; &lt;/li&gt;&lt;li style="margin-left:-20px"&gt;your investment has a 5% return each year; and&lt;/li&gt;&lt;li style="margin-left:-20px"&gt;the Portfolio&amp;#8217;s operating expenses remain the same.&lt;/li&gt;&lt;/ul&gt;Although your actual costs may be higher or lower, under these assumptions your costs would be:</rr:ExpenseExampleNarrativeTextBlock>
  <rr:PortfolioTurnoverHeading contextRef="Duration_01May2012_30Apr2013S000010997_Member">&lt;b&gt;Portfolio Turnover&lt;/b&gt;</rr:PortfolioTurnoverHeading>
  <rr:PortfolioTurnoverTextBlock contextRef="Duration_01May2012_30Apr2013S000010997_Member">The Portfolio pays transaction costs, such as commissions, when it buys and sells securities (&amp;#8220;turns over&amp;#8221; its portfolio). A higher portfolio turnover rate may indicate higher transaction costs. These costs, which are not reflected in annual fund operating expenses or in the &amp;#8220;Example&amp;#8221;, affect the Portfolio&amp;#8217;s performance. During the most recent fiscal year, the Portfolio&amp;#8217;s portfolio turnover rate was 43% of its portfolio&amp;#8217;s average value.</rr:PortfolioTurnoverTextBlock>
  <rr:StrategyHeading contextRef="Duration_01May2012_30Apr2013S000010997_Member">&lt;b&gt;INVESTMENTS, RISKS AND PERFORMANCE &lt;br/&gt;&lt;br/&gt;Principal Investment Strategies&lt;/b&gt;</rr:StrategyHeading>
  <rr:StrategyNarrativeTextBlock contextRef="Duration_01May2012_30Apr2013S000010997_Member">The Portfolio seeks to substantially replicate the total return of the securities comprising the Barclays Index, taking into consideration redemptions, sales of additional shares, and other adjustments described below. The Barclays Index is an unmanaged index of 8,079 U.S. Treasury, government-related and investment grade corporate and securitized fixed-income securities with a total market value of $17.0 trillion as of December 31, 2012. The Barclays Index is primarily comprised of:&lt;ul type="square"&gt;&lt;li style="margin-left:-20px"&gt;Obligations issued or guaranteed by the U.S. Government or its agencies or instrumentalities; and&lt;/li&gt;&lt;li style="margin-left:-20px"&gt;Publicly-traded or 144A corporate and securitized fixed-income securities that either have a rating of BBB- or higher from Standard &amp;#38; Poor's Ratings Services or Baa3 or higher from Moody's Investors Service, Inc., or an equivalent rating from another nationally recognized statistical rating organization ("NRSRO"), or are expected to be rated at that level based on the actual ratings of the issuer's other "index-eligible" fixed-income securities.&lt;/li&gt;&lt;/ul&gt;Certain securities, such as floating-rate issues, bonds with equity-type features, private placements, inflation-linked bonds, and SEC Rule 144A securities without registration rights, among others, are excluded from the Barclays Index. As of December 31, 2012, the average maturity of the securities in the Barclays Index was 6.96 years, the average coupon was 3.57% and the modified duration was 5.06 years. The Barclays Index includes all "index-eligible" securities that meet minimum par amounts outstanding.&lt;br/&gt;&lt;br/&gt; The Portfolio will invest primarily in fixed-income securities that comprise the Barclays Index and unrated fixed-income securities with a credit quality, as determined by the Advisor or Subadvisor, that is comparable to the securities that comprise the Barclays Index. The Portfolio may also invest in Barclays Capital iShares&lt;sup&gt;&amp;#174;&lt;/sup&gt;. Barclays Capital iShares&lt;sup&gt;&amp;#174; &lt;/sup&gt;are units of beneficial interest in a unit investment trust, representing proportionate undivided interests in a portfolio of securities in substantially the same weighting as the securities that comprise the Barclays Index. Derivatives such as options and futures, and options on futures, may also be held by the Portfolio incidental to its main investment strategy in an attempt to replicate the total return performance of the Barclays index. The Portfolio may also write covered call options on U.S. Treasury securities and options on futures contracts for such securities.&lt;br/&gt;&lt;br/&gt;The Portfolio will not purchase bonds rated below investment grade, commonly known as junk bonds. However, if a bond held in the Portfolio is downgraded to a rating below investment grade, the Portfolio may continue to hold the security until such time as the Subadvisor deems it most advantageous to dispose of the security. The Portfolio will not directly purchase common stocks. However, it may retain up to 5% of the value of its total assets in common stocks acquired either by conversion of fixed-income securities or by the exercise of warrants attached thereto.&lt;br/&gt;&lt;br/&gt;Under normal circumstances, the Portfolio will invest at least 80% of its net assets in investments with economic characteristics similar to the fixed-income securities represented in the Barclays Index. The Portfolio will provide shareholders with at least 60 days' notice before changing this 80% policy. While not required, the Portfolio will generally sell securities that the Index manager removes from the Index. Although the Subadvisor will attempt to invest and maintain as much of the Portfolio's assets as is practical in fixed-income securities included among the Barclays Index and futures contracts and options relating thereto under normal market conditions, a portion of the Portfolio may be invested in money market instruments pending investment or to meet redemption requests or other needs for liquid assets.</rr:StrategyNarrativeTextBlock>
  <rr:RiskHeading contextRef="Duration_01May2012_30Apr2013S000010997_Member">&lt;b&gt;Principal Risks&lt;/b&gt;</rr:RiskHeading>
  <rr:RiskNarrativeTextBlock contextRef="Duration_01May2012_30Apr2013S000010997_Member">You could lose money on your investment in the Portfolio, or the Portfolio could underperform, because of the risks described below. An investment in the Portfolio is not a bank deposit and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.&lt;br/&gt;&lt;br/&gt;Management Risk. Individual investments of the Portfolio may not perform as expected, and the portfolio management practices may not achieve the desired result.&lt;br/&gt;&lt;br/&gt;Bond Market Risk. The market prices of bonds held by the Portfolio may fall.&lt;br/&gt;&lt;br/&gt;Index Tracking Risk. An index fund has operating expenses; a market index does not. The Portfolio, while expected to track its target index as closely as possible, will not be able to match the performance of the index exactly.&lt;br/&gt;&lt;br/&gt;Credit Risk. The credit quality of fixed-income securities may deteriorate, which could lead to default or bankruptcy of the issuer where the issuer becomes unable to pay its obligations when due.&lt;br/&gt;&lt;br/&gt;Mortgage-Backed and Asset-Backed Securities Risk. The value of investments in mortgage-backed and asset-backed securities is subject to interest rate risk and credit risk. These securities are also subject to the risk that borrowers will prepay the principal on their loans more quickly than expected (prepayment risk) or more slowly than expected (extension risk), which will affect the yield, average life and price of the securities. In addition, faster-than-expected prepayments may cause the Portfolio to invest the prepaid principal in lower yielding securities, and slower-than-expected prepayments may reduce the potential for the Portfolio to invest in higher yielding securities.&lt;br/&gt;&lt;br/&gt;Mortgage-Backed Security Risk (Government-Sponsored Enterprises). Debt and mortgage-backed securities issued by government-sponsored enterprises ("GSEs") such as the Federal National Mortgage Association ("FNMA") and the Federal Home Loan Mortgage Corporation ("FHLMC") are neither insured nor guaranteed by the U.S. Treasury and are not backed by the full faith and credit of the U.S. government. Such securities are only supported by the credit of the applicable GSE. The U.S. government has provided financial support to FNMA and FHLMC, but there can be no assurance that it will support these or other GSEs in the future.&lt;br/&gt;&lt;br/&gt;Collateralized Mortgage Obligation ("CMO") and Structured Asset-Backed Securities ("ABS") Risk. A CMO is a multiclass bond that is backed by a pool of mortgage loans or mortgage-backed securities. A structured ABS is a multiclass bond that is typically backed by a pool of auto loans, credit card receivables, home equity loans or student loans. A CMO or structured ABS is subject to interest rate risk, credit risk, prepayment risk and extension risk. In addition, if the Portfolio holds a class of a CMO or a structured ABS that is subordinated to other classes backed by the same pool of collateral, the likelihood that the Portfolio will receive payments of principal may be substantially limited.&lt;br/&gt;&lt;br/&gt;Interest Rate Risk. A change in interest rates may adversely affect the value of fixed-income securities. When interest rates rise, the value of fixed-income securities will generally fall. Longer-term securities are subject to greater interest rate risk.&lt;br/&gt;&lt;br/&gt;Unrated security risk. Unrated securities may be less liquid than rated securities determined to be of comparable quality. When the Portfolio purchases unrated securities, it will depend on the Advisor's and/or Subadvisor's analysis of credit risk without the assessment of an NRSRO.&lt;br/&gt;&lt;br/&gt;Corporate and Taxable Municipal Bond Risk. For corporate and taxable municipal bonds, there is credit risk in addition to the interest rate risk that affects all fixed-income securities.&lt;br/&gt;&lt;br/&gt;Risk of Barclays Capital iShares&lt;sup&gt;&amp;#174;&lt;/sup&gt;. Barclays Capital iShares&lt;sup&gt;&amp;#174; &lt;/sup&gt;are subject to the risk that the prices of the fixed-income securities in the Barclays Index may decline. An investment in Barclays Capital iShares&lt;sup&gt;&amp;#174; &lt;/sup&gt;may not replicate exactly the performance of the Barclays Index for any number of reasons. Shareholders of the Portfolio bear their proportionate share of the operating expenses of the underlying investment as well as their share of the Portfolio's fees and expenses.&lt;br/&gt;&lt;br/&gt;Warrants Risk. Warrants may lack a liquid secondary market for resale. The prices of warrants may fluctuate as a result of speculation or other factors. In addition, the price of the underlying security may not reach, or have reasonable prospects of reaching, a level at which the warrant can be exercised prudently.&lt;br/&gt;&lt;br/&gt;Futures and Options Risk. Using futures and options may increase the Portfolio's volatility and may involve a small cash investment relative to the magnitude of risk assumed. If changes in a derivative's value do not correspond to changes in the value of the Portfolio's other investments, the Portfolio may not fully benefit from or could lose money on the derivative position. Derivatives can involve risk of loss if the party who issued the derivative defaults on its obligation. Derivatives may also be less liquid and more difficult to value.</rr:RiskNarrativeTextBlock>
  <rr:BarChartAndPerformanceTableHeading contextRef="Duration_01May2012_30Apr2013S000010997_Member">&lt;b&gt;Performance&lt;/b&gt;</rr:BarChartAndPerformanceTableHeading>
  <rr:PerformanceNarrativeTextBlock contextRef="Duration_01May2012_30Apr2013S000010997_Member">The following bar chart and table show the Portfolio&amp;#8217;s annual returns and its long-term performance, which give some indication of the risks of investing in the Portfolio. The bar chart shows how the performance has varied from year to year. The table compares the Portfolio&amp;#8217;s performance over time with that of a benchmark index and a peer average.&lt;br/&gt;&lt;br/&gt;The Portfolio&amp;#8217;s past performance does not necessarily indicate how the Portfolio will perform in the future. For updated performance information, visit www.calvert.com.&lt;br/&gt;&lt;br/&gt; The returns shown do not reflect fees and charges imposed under the variable annuity contracts and life insurance policies through which an investment may be made. If those fees and charges were included, they would reduce these returns.</rr:PerformanceNarrativeTextBlock>
  <rr:BarChartHeading contextRef="Duration_01May2012_30Apr2013S000010997_Member">&lt;b&gt;Calendar Year Total Returns&lt;/b&gt;</rr:BarChartHeading>
  <rr:BarChartClosingTextBlock contextRef="Duration_01May2012_30Apr2013S000010997_Member">&lt;table style="width: 6in; " border="0" cellspacing="0"&gt; &lt;tr valign="bottom"&gt; &lt;td align="left"&gt;&lt;/td&gt; &lt;td align="right"&gt;&lt;b&gt;Quarter&lt;/b&gt;&lt;/td&gt; &lt;td align="right"&gt;&lt;b&gt;Total&lt;/b&gt;&lt;/td&gt; &lt;td align="left"&gt;&amp;nbsp;&lt;/td&gt;&lt;/tr&gt; &lt;tr valign="bottom"&gt; &lt;td align="left"&gt;&amp;nbsp;&lt;/td&gt; &lt;td style="BORDER-BOTTOM: #000000 1px solid; TEXT-INDENT: 2.834pt" align="right"&gt;&lt;b&gt;Ended&lt;/b&gt;&lt;/td&gt; &lt;td style="BORDER-BOTTOM: #000000 1px solid; TEXT-INDENT: 3.932pt" align="right"&gt;&lt;b&gt;Return&lt;/b&gt;&lt;/td&gt; &lt;td style="BORDER-BOTTOM: #000000 1px solid" align="left"&gt;&amp;nbsp;&lt;/td&gt;&lt;/tr&gt; &lt;tr&gt; &lt;td colspan="4"&gt;&amp;nbsp;&lt;/td&gt;&lt;/tr&gt; &lt;tr valign="bottom"&gt; &lt;td align="left"&gt;Best Quarter (of periods shown)&lt;/td&gt; &lt;td style="TEXT-INDENT: 4.283pt" align="right"&gt;12/31/08&lt;/td&gt; &lt;td align="right"&gt;4.80&lt;/td&gt; &lt;td align="left"&gt;%&lt;/td&gt;&lt;/tr&gt; &lt;tr valign="bottom"&gt; &lt;td align="left"&gt;Worst Quarter (of periods shown)&lt;/td&gt; &lt;td style="TEXT-INDENT: 4.283pt" align="right"&gt;6/30/04&lt;/td&gt; &lt;td align="right"&gt;-2.51&lt;/td&gt; &lt;td align="left"&gt;%&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;</rr:BarChartClosingTextBlock>
  <rr:PerformanceTableHeading contextRef="Duration_01May2012_30Apr2013S000010997_Member">&lt;b&gt;Average Annual Total Returns&lt;br/&gt;(as of 12/31/12)&lt;/b&gt;</rr:PerformanceTableHeading>
  <rr:PortfolioTurnoverRate decimals="4" contextRef="Duration_01May2012_30Apr2013S000010997_Member" unitRef="pure">0.43</rr:PortfolioTurnoverRate>
  <rr:RiskLoseMoney contextRef="Duration_01May2012_30Apr2013S000010997_Member">You could lose money on your investment in the Portfolio, or the Portfolio could underperform, because of the risks described below.</rr:RiskLoseMoney>
  <rr:RiskNotInsuredDepositoryInstitution contextRef="Duration_01May2012_30Apr2013S000010997_Member">An investment in the Portfolio is not a bank deposit and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.</rr:RiskNotInsuredDepositoryInstitution>
  <rr:PerformanceInformationIllustratesVariabilityOfReturns contextRef="Duration_01May2012_30Apr2013S000010997_Member">The following bar chart and table show the Portfolio&amp;#8217;s annual returns and its long-term performance, which give some indication of the risks of investing in the Portfolio. The bar chart shows how the performance has varied from year to year. The table compares the Portfolio&amp;#8217;s performance over time with that of a benchmark index and a peer average.</rr:PerformanceInformationIllustratesVariabilityOfReturns>
  <rr:PerformanceAvailabilityWebSiteAddress contextRef="Duration_01May2012_30Apr2013S000010997_Member">www.calvert.com</rr:PerformanceAvailabilityWebSiteAddress>
  <rr:ExpenseExampleNoRedemptionYear01 decimals="INF" contextRef="Duration_01May2012_30Apr2013S000010994_MemberC000030370_Member" unitRef="USD">64</rr:ExpenseExampleNoRedemptionYear01>
  <rr:PerformancePastDoesNotIndicateFuture contextRef="Duration_01May2012_30Apr2013S000010997_Member">The Portfolio&amp;#8217;s past performance does not necessarily indicate how the Portfolio will perform in the future.</rr:PerformancePastDoesNotIndicateFuture>
  <rr:ExpenseExampleNoRedemptionYear03 decimals="INF" contextRef="Duration_01May2012_30Apr2013S000010994_MemberC000030370_Member" unitRef="USD">202</rr:ExpenseExampleNoRedemptionYear03>
  <rr:BarChartDoesNotReflectSalesLoads contextRef="Duration_01May2012_30Apr2013S000010997_Member">The returns shown do not reflect fees and charges imposed under the variable annuity contracts and life insurance policies through which an investment may be made. If those fees and charges were included, they would reduce these returns.</rr:BarChartDoesNotReflectSalesLoads>
  <rr:ExpenseExampleNoRedemptionYear05 decimals="INF" contextRef="Duration_01May2012_30Apr2013S000010994_MemberC000030370_Member" unitRef="USD">351</rr:ExpenseExampleNoRedemptionYear05>
  <rr:ExpenseExampleNoRedemptionYear10 decimals="INF" contextRef="Duration_01May2012_30Apr2013S000010994_MemberC000030370_Member" unitRef="USD">786</rr:ExpenseExampleNoRedemptionYear10>
  <rr:HighestQuarterlyReturnLabel contextRef="Duration_01May2012_30Apr2013S000010997_MemberC000030374_Member">Best Quarter (of periods shown)</rr:HighestQuarterlyReturnLabel>
  <rr:BarChartHighestQuarterlyReturnDate contextRef="Duration_01May2012_30Apr2013S000010997_MemberC000030374_Member">2008-12-31</rr:BarChartHighestQuarterlyReturnDate>
  <rr:BarChartHighestQuarterlyReturn decimals="4" contextRef="Duration_01May2012_30Apr2013S000010997_MemberC000030374_Member" unitRef="pure">0.048</rr:BarChartHighestQuarterlyReturn>
  <rr:LowestQuarterlyReturnLabel contextRef="Duration_01May2012_30Apr2013S000010997_MemberC000030374_Member">Worst Quarter (of periods shown)</rr:LowestQuarterlyReturnLabel>
  <rr:BarChartLowestQuarterlyReturnDate contextRef="Duration_01May2012_30Apr2013S000010997_MemberC000030374_Member">2004-06-30</rr:BarChartLowestQuarterlyReturnDate>
  <rr:BarChartLowestQuarterlyReturn decimals="4" contextRef="Duration_01May2012_30Apr2013S000010997_MemberC000030374_Member" unitRef="pure">-0.0251</rr:BarChartLowestQuarterlyReturn>
  <rr:ExpenseExampleYear01 decimals="INF" contextRef="Duration_01May2012_30Apr2013S000010994_MemberC000030370_Member" unitRef="USD">64</rr:ExpenseExampleYear01>
  <rr:ExpenseExampleYear03 decimals="INF" contextRef="Duration_01May2012_30Apr2013S000010994_MemberC000030370_Member" unitRef="USD">202</rr:ExpenseExampleYear03>
  <rr:ExpenseExampleYear05 decimals="INF" contextRef="Duration_01May2012_30Apr2013S000010994_MemberC000030370_Member" unitRef="USD">351</rr:ExpenseExampleYear05>
  <rr:ExpenseExampleYear10 decimals="INF" contextRef="Duration_01May2012_30Apr2013S000010994_MemberC000030370_Member" unitRef="USD">786</rr:ExpenseExampleYear10>
  <rr:PortfolioTurnoverRate decimals="4" contextRef="Duration_01May2012_30Apr2013S000015005_Member" unitRef="pure">0.24</rr:PortfolioTurnoverRate>
  <rr:RiskLoseMoney contextRef="Duration_01May2012_30Apr2013S000015005_Member">You could lose money on your investment in the Portfolio, or the Portfolio could underperform, because of the risks described below.</rr:RiskLoseMoney>
  <rr:RiskNotInsuredDepositoryInstitution contextRef="Duration_01May2012_30Apr2013S000015005_Member">An investment in the Portfolio is not a bank deposit and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.</rr:RiskNotInsuredDepositoryInstitution>
  <rr:MaximumSalesChargeImposedOnPurchasesOverOfferingPrice decimals="4" contextRef="Duration_01May2012_30Apr2013S000010997_MemberC000030374_Member" unitRef="pure">0</rr:MaximumSalesChargeImposedOnPurchasesOverOfferingPrice>
  <rr:PerformanceInformationIllustratesVariabilityOfReturns contextRef="Duration_01May2012_30Apr2013S000015005_Member">The following bar chart and table show the Portfolio&amp;#8217;s annual returns and its long-term performance, which give some indication of the risks of investing in the Portfolio. The bar chart shows how the performance has varied from year to year. The table compares the Portfolio&amp;#8217;s performance over time with that of a benchmark index and a peer average.</rr:PerformanceInformationIllustratesVariabilityOfReturns>
  <rr:MaximumDeferredSalesChargeOverOfferingPrice decimals="4" contextRef="Duration_01May2012_30Apr2013S000010997_MemberC000030374_Member" unitRef="pure">0</rr:MaximumDeferredSalesChargeOverOfferingPrice>
  <rr:PerformanceAvailabilityWebSiteAddress contextRef="Duration_01May2012_30Apr2013S000015005_Member">www.calvert.com</rr:PerformanceAvailabilityWebSiteAddress>
  <rr:PerformancePastDoesNotIndicateFuture contextRef="Duration_01May2012_30Apr2013S000015005_Member">The Portfolio&amp;#8217;s past performance does not necessarily indicate how the Portfolio will perform in the future.</rr:PerformancePastDoesNotIndicateFuture>
  <rr:HighestQuarterlyReturnLabel contextRef="Duration_01May2012_30Apr2013S000015005_MemberC000040846_Member">Best Quarter (of periods shown)</rr:HighestQuarterlyReturnLabel>
  <rr:BarChartHighestQuarterlyReturnDate contextRef="Duration_01May2012_30Apr2013S000015005_MemberC000040846_Member">2008-03-31</rr:BarChartHighestQuarterlyReturnDate>
  <rr:ManagementFeesOverAssets decimals="4" contextRef="Duration_01May2012_30Apr2013S000010994_MemberC000030370_Member" unitRef="pure">0.0045</rr:ManagementFeesOverAssets>
  <rr:BarChartHighestQuarterlyReturn decimals="4" contextRef="Duration_01May2012_30Apr2013S000015005_MemberC000040846_Member" unitRef="pure">0.0513</rr:BarChartHighestQuarterlyReturn>
  <rr:OtherExpensesOverAssets decimals="4" contextRef="Duration_01May2012_30Apr2013S000010994_MemberC000030370_Member" unitRef="pure">0.0018</rr:OtherExpensesOverAssets>
  <rr:LowestQuarterlyReturnLabel contextRef="Duration_01May2012_30Apr2013S000015005_MemberC000040846_Member">Worst Quarter (of periods shown)</rr:LowestQuarterlyReturnLabel>
  <rr:BarChartLowestQuarterlyReturnDate contextRef="Duration_01May2012_30Apr2013S000015005_MemberC000040846_Member">2008-09-30</rr:BarChartLowestQuarterlyReturnDate>
  <rr:ExpensesOverAssets decimals="4" contextRef="Duration_01May2012_30Apr2013S000010994_MemberC000030370_Member" unitRef="pure">0.0063</rr:ExpensesOverAssets>
  <rr:BarChartLowestQuarterlyReturn decimals="4" contextRef="Duration_01May2012_30Apr2013S000015005_MemberC000040846_Member" unitRef="pure">-0.0352</rr:BarChartLowestQuarterlyReturn>
  <rr:ManagementFeesOverAssets decimals="4" contextRef="Duration_01May2012_30Apr2013S000010997_MemberC000030374_Member" unitRef="pure">0.004</rr:ManagementFeesOverAssets>
  <rr:OtherExpensesOverAssets decimals="4" contextRef="Duration_01May2012_30Apr2013S000010997_MemberC000030374_Member" unitRef="pure">0.0009</rr:OtherExpensesOverAssets>
  <rr:ExpensesOverAssets decimals="4" contextRef="Duration_01May2012_30Apr2013S000010997_MemberC000030374_Member" unitRef="pure">0.0049</rr:ExpensesOverAssets>
  <rr:StrategyNarrativeTextBlock contextRef="Duration_01May2012_30Apr2013S000015009_Member">Under normal circumstances, the Portfolio will invest substantially all of its net assets (including borrowings for investment purposes) in ETFs and ETNs (the &amp;#8220;Acquired Funds and Notes&amp;#8221;) that represent different natural resources exposures. The Portfolio will provide shareholders with at least 60 days&amp;#8217; notice before changing this policy. An ETF is a type of investment company whose investment objective typically is to match the returns of a particular market index. ETFs are traded on a securities exchange at prices quoted by the exchange throughout its trading day. An ETN is a debt security designed to provide investors access to the returns of various market benchmarks by linking the return of the security to the performance of a particular index.&lt;br/&gt;&lt;br/&gt;The Portfolio currently invests in the Acquired Funds and Notes that track the indices (or components thereof) shown below, and will vary its exposure based on market conditions:&lt;br/&gt;&lt;br/&gt;Natural Resources Index or Commodity &lt;ul type="square"&gt;&lt;li style="margin-left:-20px"&gt;Deutsche Bank Liquid Commodity Index &lt;/li&gt;&lt;/ul&gt;&lt;ul type="square"&gt;&lt;li style="margin-left:-20px"&gt;Dow Jones &amp;#8211; UBS Commodity Index Total Return &lt;/li&gt;&lt;/ul&gt;&lt;ul type="square"&gt;&lt;li style="margin-left:-20px"&gt;MSCI REIT Index &lt;/li&gt;&lt;/ul&gt;&lt;ul type="square"&gt;&lt;li style="margin-left:-20px"&gt;MSCI U.S. Investable Materials Index &lt;/li&gt;&lt;/ul&gt;&lt;ul type="square"&gt;&lt;li style="margin-left:-20px"&gt;Goldman Sachs Natural Resources Sector Index &lt;/li&gt;&lt;/ul&gt;&lt;ul type="square"&gt;&lt;li style="margin-left:-20px"&gt;NASDAQ OMX US Water Index&lt;/li&gt;&lt;/ul&gt;&lt;ul type="square"&gt;&lt;li style="margin-left:-20px"&gt;S&amp;amp;P Global Materials Index &lt;/li&gt;&lt;/ul&gt;&lt;ul type="square"&gt;&lt;li style="margin-left:-20px"&gt;Dow Jones U.S. Utilities Sector Index&lt;/li&gt;&lt;/ul&gt;&lt;ul type="square"&gt;&lt;li style="margin-left:-20px"&gt;NYSE Arca Gold Miners Index &lt;/li&gt;&lt;/ul&gt;&lt;ul type="square"&gt;&lt;li style="margin-left:-20px"&gt;Beacon Global Timber Index &lt;/li&gt;&lt;/ul&gt;The Portfolio selects Acquired Funds and Notes that track investments in securities of natural resources companies and associated businesses, including utilities (such as gas and water). The natural resources sector can include companies that own, produce, refine, process, transport and market natural resources and companies that provide related services. The sector includes, but is not limited to, commodities and industries such as integrated oil, oil and gas exploration, metal production, forest products, paper products, chemicals, building materials, coal, real estate and alternative energy sources.&lt;br/&gt;&lt;br/&gt;In its selection of investments, the Portfolio seeks Acquired Funds and Notes whose underlying exposures appear to have the potential for above-average long-term performance based on supply and demand of a resource and the state of the market. These may include Acquired Funds and Notes whose underlying exposures are expected to show above-average growth over the long-term as well as those exposures that appear to the Subadvisor to be undervalued.&lt;br/&gt;&lt;br/&gt;The Portfolio may sell or reduce an Acquired Fund or Note when, in the Subadvisor&amp;#8217;s opinion, there is a change in the macroeconomic outlook, technical deterioration of an underlying exposure, valuation issues, a need to rebalance the portfolio or a better opportunity elsewhere.&lt;br/&gt;&lt;br/&gt;Based on the planned investments in the portfolio, the Portfolio will be a non-diversified fund, which means it may invest its assets in a smaller number of issuers than a diversified fund.</rr:StrategyNarrativeTextBlock>
  <rr:MaximumSalesChargeImposedOnPurchasesOverOfferingPrice decimals="4" contextRef="Duration_01May2012_30Apr2013S000010994_MemberC000030370_Member" unitRef="pure">0</rr:MaximumSalesChargeImposedOnPurchasesOverOfferingPrice>
  <rr:MaximumDeferredSalesChargeOverOfferingPrice decimals="4" contextRef="Duration_01May2012_30Apr2013S000010994_MemberC000030370_Member" unitRef="pure">0</rr:MaximumDeferredSalesChargeOverOfferingPrice>
  <rr:ExpenseExampleYear01 decimals="INF" contextRef="Duration_01May2012_30Apr2013S000010997_MemberC000030374_Member" unitRef="USD">50</rr:ExpenseExampleYear01>
  <rr:ExpenseExampleYear03 decimals="INF" contextRef="Duration_01May2012_30Apr2013S000010997_MemberC000030374_Member" unitRef="USD">157</rr:ExpenseExampleYear03>
  <rr:ShareholderFeesTableTextBlock contextRef="Duration_01May2012_30Apr2013S000010994_Member">&lt;div style="display:none"&gt;~ http://www.calvert.com/role/ScheduleShareholderFeesCalvertVPNASDAQ100IndexPortfolio column period compact * ~&lt;/div&gt;</rr:ShareholderFeesTableTextBlock>
  <rr:ExpenseExampleYear05 decimals="INF" contextRef="Duration_01May2012_30Apr2013S000010997_MemberC000030374_Member" unitRef="USD">274</rr:ExpenseExampleYear05>
  <rr:ExpenseExampleYear10 decimals="INF" contextRef="Duration_01May2012_30Apr2013S000010997_MemberC000030374_Member" unitRef="USD">616</rr:ExpenseExampleYear10>
  <rr:ShareholderFeesTableTextBlock contextRef="Duration_01May2012_30Apr2013S000015005_Member">&lt;div style="display:none"&gt;~ http://www.calvert.com/role/ScheduleShareholderFeesCalvertVPInflationProtectedPlusPortfolio column period compact * ~&lt;/div&gt;</rr:ShareholderFeesTableTextBlock>
  <rr:AnnualFundOperatingExpensesTableTextBlock contextRef="Duration_01May2012_30Apr2013S000010994_Member">&lt;div style="display:none"&gt;~ http://www.calvert.com/role/ScheduleAnnualFundOperatingExpensesCalvertVPNASDAQ100IndexPortfolio column period compact * ~&lt;/div&gt;</rr:AnnualFundOperatingExpensesTableTextBlock>
  <rr:AnnualFundOperatingExpensesTableTextBlock contextRef="Duration_01May2012_30Apr2013S000015005_Member">&lt;div style="display:none"&gt;~ http://www.calvert.com/role/ScheduleAnnualFundOperatingExpensesCalvertVPInflationProtectedPlusPortfolio column period compact * ~&lt;/div&gt;</rr:AnnualFundOperatingExpensesTableTextBlock>
  <rr:ExpenseExampleWithRedemptionTableTextBlock contextRef="Duration_01May2012_30Apr2013S000010994_Member">&lt;div style="display:none"&gt;~ http://www.calvert.com/role/ScheduleExpenseExampleTransposedCalvertVPNASDAQ100IndexPortfolio column period compact * ~&lt;/div&gt;</rr:ExpenseExampleWithRedemptionTableTextBlock>
  <rr:ExpenseExampleNoRedemptionYear01 decimals="INF" contextRef="Duration_01May2012_30Apr2013S000010997_MemberC000030374_Member" unitRef="USD">50</rr:ExpenseExampleNoRedemptionYear01>
  <rr:ExpenseExampleNoRedemptionYear03 decimals="INF" contextRef="Duration_01May2012_30Apr2013S000010997_MemberC000030374_Member" unitRef="USD">157</rr:ExpenseExampleNoRedemptionYear03>
  <rr:ExpenseExampleNoRedemptionTableTextBlock contextRef="Duration_01May2012_30Apr2013S000010994_Member">&lt;div style="display:none"&gt;~ http://www.calvert.com/role/ScheduleExpenseExampleNoRedemptionTransposedCalvertVPNASDAQ100IndexPortfolio column period compact * ~&lt;/div&gt;</rr:ExpenseExampleNoRedemptionTableTextBlock>
  <rr:ExpenseExampleNoRedemptionYear05 decimals="INF" contextRef="Duration_01May2012_30Apr2013S000010997_MemberC000030374_Member" unitRef="USD">274</rr:ExpenseExampleNoRedemptionYear05>
  <rr:ExpenseExampleNoRedemptionYear10 decimals="INF" contextRef="Duration_01May2012_30Apr2013S000010997_MemberC000030374_Member" unitRef="USD">616</rr:ExpenseExampleNoRedemptionYear10>
  <rr:BarChartTableTextBlock contextRef="Duration_01May2012_30Apr2013S000010994_Member">&lt;div style="display:none"&gt;~ http://www.calvert.com/role/ScheduleAnnualTotalReturnsCalvertVPNASDAQ100IndexPortfolioBarChart column period compact * ~&lt;/div&gt;</rr:BarChartTableTextBlock>
  <rr:ExpenseExampleWithRedemptionTableTextBlock contextRef="Duration_01May2012_30Apr2013S000015005_Member">&lt;div style="display:none"&gt;~ http://www.calvert.com/role/ScheduleExpenseExampleTransposedCalvertVPInflationProtectedPlusPortfolio column period compact * ~&lt;/div&gt;</rr:ExpenseExampleWithRedemptionTableTextBlock>
  <rr:PerformanceTableTextBlock contextRef="Duration_01May2012_30Apr2013S000010994_Member">&lt;div style="display:none"&gt;~ http://www.calvert.com/role/ScheduleAverageAnnualTotalReturnsTransposedCalvertVPNASDAQ100IndexPortfolio column period compact * ~&lt;/div&gt;</rr:PerformanceTableTextBlock>
  <rr:ExpenseExampleNoRedemptionTableTextBlock contextRef="Duration_01May2012_30Apr2013S000015005_Member">&lt;div style="display:none"&gt;~ http://www.calvert.com/role/ScheduleExpenseExampleNoRedemptionTransposedCalvertVPInflationProtectedPlusPortfolio column period compact * ~&lt;/div&gt;</rr:ExpenseExampleNoRedemptionTableTextBlock>
  <rr:AnnualReturn2004 decimals="4" contextRef="Duration_01May2012_30Apr2013S000010997_MemberC000030374_Member" unitRef="pure">0.0355</rr:AnnualReturn2004>
  <rr:AnnualReturn2005 decimals="4" contextRef="Duration_01May2012_30Apr2013S000010997_MemberC000030374_Member" unitRef="pure">0.0157</rr:AnnualReturn2005>
  <rr:AnnualReturn2006 decimals="4" contextRef="Duration_01May2012_30Apr2013S000010997_MemberC000030374_Member" unitRef="pure">0.0364</rr:AnnualReturn2006>
  <rr:AnnualReturn2007 decimals="4" contextRef="Duration_01May2012_30Apr2013S000010997_MemberC000030374_Member" unitRef="pure">0.0743</rr:AnnualReturn2007>
  <rr:AnnualReturn2008 decimals="4" contextRef="Duration_01May2012_30Apr2013S000010997_MemberC000030374_Member" unitRef="pure">0.0656</rr:AnnualReturn2008>
  <rr:AnnualReturn2009 decimals="4" contextRef="Duration_01May2012_30Apr2013S000010997_MemberC000030374_Member" unitRef="pure">0.0459</rr:AnnualReturn2009>
  <rr:AnnualReturn2010 decimals="4" contextRef="Duration_01May2012_30Apr2013S000010997_MemberC000030374_Member" unitRef="pure">0.0637</rr:AnnualReturn2010>
  <rr:AnnualReturn2011 decimals="4" contextRef="Duration_01May2012_30Apr2013S000010997_MemberC000030374_Member" unitRef="pure">0.0839</rr:AnnualReturn2011>
  <rr:AnnualReturn2012 decimals="4" contextRef="Duration_01May2012_30Apr2013S000010997_MemberC000030374_Member" unitRef="pure">0.0383</rr:AnnualReturn2012>
  <rr:BarChartTableTextBlock contextRef="Duration_01May2012_30Apr2013S000015005_Member">&lt;div style="display:none"&gt;~ http://www.calvert.com/role/ScheduleAnnualTotalReturnsCalvertVPInflationProtectedPlusPortfolioBarChart column period compact * ~&lt;/div&gt;</rr:BarChartTableTextBlock>
  <rr:PerformanceTableTextBlock contextRef="Duration_01May2012_30Apr2013S000015005_Member">&lt;div style="display:none"&gt;~ http://www.calvert.com/role/ScheduleAverageAnnualTotalReturnsTransposedCalvertVPInflationProtectedPlusPortfolio column period compact * ~&lt;/div&gt;</rr:PerformanceTableTextBlock>
  <rr:RiskNarrativeTextBlock contextRef="Duration_01May2012_30Apr2013S000015009_Member">Non-Diversification Risk. Because the Portfolio may invest more of its assets in a smaller number of issuers than a diversified fund, the gains or losses on a single security may have greater impact on the Portfolio.&lt;br/&gt;&lt;br/&gt;Structured Note Risk. The Portfolio may invest up to 10% of its total assets directly in structured notes. Structured notes are derivative investments whose value depends on, or is derived from, the value of an underlying security. Structured notes may be tied to the performance of individual stocks or to baskets of assets such as commodities. Structured notes are generally corporate debt securities and are subject to similar risks such as credit risk and the loss of principal. Many structured notes are illiquid.&lt;br/&gt;&lt;br/&gt;Management Risk. Individual investments of the Portfolio may not perform as expected, and the portfolio management practices may not achieve the desired result.&lt;br/&gt;&lt;br/&gt;Natural Resources Risk. Natural Resources have a historically low correlation to financial assets such as stocks and bonds. Correspondingly, their prices respond differently to financial market and economic conditions, although both are driven by the basic forces of supply and demand. However, because stocks and bonds are traded publicly on a secondary market, prices can quickly reflect forecasted earnings and future cash flows. Conversely, many factors may contribute to how natural resources prices respond to market events including warehousing and delivery constraints, changes in supply and demand dynamics, and a potential lack of fungibility. Other factors affecting natural resources prices include weather, agricultural, trade, fiscal, monetary and currency exchange processes, domestic and foreign political and economic events and policies, disease, pestilence, technological developments, and changes in interest rates. In addition, markets for commodities are likely to be volatile and there may be sharp price fluctuations even during periods when prices overall are rising.&lt;br/&gt;&lt;br/&gt;Acquired Funds and Notes Risk. Acquired Funds and Notes track a securities or natural resources index or a basket of securities or commodities. In addition to the Portfolio&amp;#8217;s operating expenses, investors will indirectly pay a proportionate share of the operating expense of the Acquired Funds and Notes. Thus, the expenses paid by an investor will be higher than if such investor had invested directly in the Acquired Funds and Notes. The performance of the Acquired Funds and Notes directly affects the ability of the Portfolio to meet its respective investment objective. Accordingly, the Portfolio&amp;#8217;s investment performance will be influenced by the investment strategies of and risks associated with the Acquired Funds and Notes in direct proportion to the amount of assets the Portfolio allocates to the Acquired Funds and Notes and the Subadvisor&amp;#8217;s allocation among the Acquired Funds and Notes.&lt;br/&gt;&lt;br/&gt;&lt;b&gt;Equity Investments. &lt;/b&gt; The Portfolio shares the principal risks of the equity securities held by the underlying securities in which the Acquired Funds and Notes invest, including the key risks below.&lt;br/&gt;&lt;br/&gt;Stock Market Risk. The market prices of stocks held by the underlying securities may fall.&lt;br/&gt;&lt;br/&gt;Common Stock Risk. Although common stocks have a history of long-term growth in value, their prices fluctuate based on changes in a company&amp;#8217;s financial condition, on overall market and economic conditions, and on investors&amp;#8217; perception of a company&amp;#8217;s well-being.&lt;br/&gt;&lt;br/&gt;Market Capitalization Risk. Large-cap companies may be unable to respond quickly to new competitive challenges such as changes in technology, and also may not be able to attain the high growth rate of successful smaller companies, especially during extended periods of economic expansion. Prices of small-cap and mid-cap stocks can be more volatile than those of larger, more established companies. Small-cap and mid-cap companies are more likely to have more limited product lines, fewer capital resources and less depth of management than larger companies. Prices of micro-cap securities are generally even more volatile and their markets are even less liquid relative to small-cap, mid-cap and large-cap securities.&lt;br/&gt;&lt;br/&gt;&lt;b&gt;Fixed-Income Investments. &lt;/b&gt; The Portfolio shares the principal risks of fixed-income securities held by the underlying securities in which the Acquired Funds and Notes invest, including the key risks below.&lt;br/&gt;&lt;br/&gt;Bond Market Risk. The market prices of bonds held by the underlying securities may fall.&lt;br/&gt;&lt;br/&gt;Interest Rate Risk. A change in interest rates may adversely affect the value of the securities. When interest rates rise, the value of fixed-income securities will generally fall. Longer-term securities are subject to greater interest rate risk.&lt;br/&gt;&lt;br/&gt;Credit Risk. The credit quality of fixed-income securities may deteriorate, which could lead to default or bankruptcy of the issuer where the issuer becomes unable to pay its obligations when due.&lt;br/&gt;&lt;br/&gt;&lt;b&gt;Money Market Investments. &lt;/b&gt; The Portfolio shares the principal risks of money market securities held by the underlying securities in which the Acquiring Funds and Notes invest, including the key risk below.&lt;br/&gt;&lt;br/&gt;Money Market Risk. Yield will change in response to market interest rates; in general, as market rates go up, so will yield, and vice versa. Credit quality of the securities may deteriorate, which could lead to default or bankruptcy of the issuer where the issuer becomes unable to pay its obligations when due.</rr:RiskNarrativeTextBlock>
  <rr:AverageAnnualReturnYear01 decimals="4" contextRef="Duration_01May2012_30Apr2013S000010997_MemberBarclaysUsAggregateBondIndex_Member" unitRef="pure">0.0422</rr:AverageAnnualReturnYear01>
  <rr:AverageAnnualReturnYear01 decimals="4" contextRef="Duration_01May2012_30Apr2013S000010997_MemberLipperVaIntermediateInvestmentGradeDebtFundsAverage_Member" unitRef="pure">0.0669</rr:AverageAnnualReturnYear01>
  <rr:AverageAnnualReturnYear05 decimals="4" contextRef="Duration_01May2012_30Apr2013S000010997_MemberBarclaysUsAggregateBondIndex_Member" unitRef="pure">0.0595</rr:AverageAnnualReturnYear05>
  <rr:AverageAnnualReturnYear05 decimals="4" contextRef="Duration_01May2012_30Apr2013S000010997_MemberLipperVaIntermediateInvestmentGradeDebtFundsAverage_Member" unitRef="pure">0.0562</rr:AverageAnnualReturnYear05>
  <rr:AverageAnnualReturnSinceInception decimals="4" contextRef="Duration_01May2012_30Apr2013S000010997_MemberBarclaysUsAggregateBondIndex_Member" unitRef="pure">0.0517</rr:AverageAnnualReturnSinceInception>
  <rr:AverageAnnualReturnSinceInception decimals="4" contextRef="Duration_01May2012_30Apr2013S000010997_MemberLipperVaIntermediateInvestmentGradeDebtFundsAverage_Member" unitRef="pure">0.0515</rr:AverageAnnualReturnSinceInception>
  <rr:PerformanceNarrativeTextBlock contextRef="Duration_01May2012_30Apr2013S000015009_Member">The following bar chart and table show the Portfolio&amp;#8217;s annual returns and its long-term performance, which give some indication of the risks of investing in the Portfolio. The bar chart shows how the performance has varied from year to year. The table compares the Portfolio&amp;#8217;s performance over time with that of a benchmark index, a composite index and a peer average.&lt;br/&gt;&lt;br/&gt;The performance of the Natural Resources Composite Index (50% Dow Jones UBS Commodity Index; 50% S&amp;amp;P North America Natural Resources Index) is shown in the table below because it is more consistent with the Portfolio&amp;#8217;s portfolio construction process and represents a more accurate reflection of the Portfolio&amp;#8217;s anticipated risk and return patterns.&lt;br/&gt;&lt;br/&gt;The Portfolio&amp;#8217;s past performance does not necessarily indicate how the Portfolio will perform in the future. For updated performance information, visit www.calvert.com.&lt;br/&gt;&lt;br/&gt;The returns shown do not reflect fees and charges imposed under the variable annuity contracts and life insurance policies through which an investment may be made. If those fees and charges were included, they would reduce these returns.</rr:PerformanceNarrativeTextBlock>
  <rr:AverageAnnualReturnYear01 decimals="4" contextRef="Duration_01May2012_30Apr2013S000010997_MemberC000030374_Member" unitRef="pure">0.0383</rr:AverageAnnualReturnYear01>
  <rr:AverageAnnualReturnYear05 decimals="4" contextRef="Duration_01May2012_30Apr2013S000010997_MemberC000030374_Member" unitRef="pure">0.0594</rr:AverageAnnualReturnYear05>
  <rr:AverageAnnualReturnSinceInception decimals="4" contextRef="Duration_01May2012_30Apr2013S000010997_MemberC000030374_Member" unitRef="pure">0.0486</rr:AverageAnnualReturnSinceInception>
  <rr:AverageAnnualReturnInceptionDate contextRef="Duration_01May2012_30Apr2013S000010997_MemberC000030374_Member">2003-03-31</rr:AverageAnnualReturnInceptionDate>
  <rr:PortfolioTurnoverRate decimals="4" contextRef="Duration_01May2012_30Apr2013S000015009_Member" unitRef="pure">0.37</rr:PortfolioTurnoverRate>
  <rr:RiskNondiversifiedStatus contextRef="Duration_01May2012_30Apr2013S000015009_Member">Non-Diversification Risk. Because the Portfolio may invest more of its assets in a smaller number of issuers than a diversified fund, the gains or losses on a single security may have greater impact on the Portfolio.</rr:RiskNondiversifiedStatus>
  <rr:PerformanceInformationIllustratesVariabilityOfReturns contextRef="Duration_01May2012_30Apr2013S000015009_Member">The following bar chart and table show the Portfolio&amp;#8217;s annual returns and its long-term performance, which give some indication of the risks of investing in the Portfolio. The bar chart shows how the performance has varied from year to year. The table compares the Portfolio&amp;#8217;s performance over time with that of a benchmark index, a composite index and a peer average.</rr:PerformanceInformationIllustratesVariabilityOfReturns>
  <rr:PerformanceAdditionalMarketIndex contextRef="Duration_01May2012_30Apr2013S000015009_Member">The performance of the Natural Resources Composite Index (50% Dow Jones UBS Commodity Index; 50% S&amp;amp;P North America Natural Resources Index) is shown in the table below because it is more consistent with the Portfolio&amp;#8217;s portfolio construction process and represents a more accurate reflection of the Portfolio&amp;#8217;s anticipated risk and return patterns.</rr:PerformanceAdditionalMarketIndex>
  <rr:PerformanceAvailabilityWebSiteAddress contextRef="Duration_01May2012_30Apr2013S000015009_Member">www.calvert.com</rr:PerformanceAvailabilityWebSiteAddress>
  <rr:PerformancePastDoesNotIndicateFuture contextRef="Duration_01May2012_30Apr2013S000015009_Member">The Portfolio's past performance does not necessarily indicate how the Portfolio will perform in the future.</rr:PerformancePastDoesNotIndicateFuture>
  <rr:BarChartDoesNotReflectSalesLoads contextRef="Duration_01May2012_30Apr2013S000015009_Member">The returns shown do not reflect fees and charges imposed under the variable annuity contracts and life insurance policies through which an investment may be made. If those fees and charges were included, they would reduce these returns.</rr:BarChartDoesNotReflectSalesLoads>
  <rr:HighestQuarterlyReturnLabel contextRef="Duration_01May2012_30Apr2013S000015009_MemberC000040850_Member">Best Quarter (of periods shown)</rr:HighestQuarterlyReturnLabel>
  <rr:BarChartHighestQuarterlyReturnDate contextRef="Duration_01May2012_30Apr2013S000015009_MemberC000040850_Member">2010-12-31</rr:BarChartHighestQuarterlyReturnDate>
  <rr:BarChartHighestQuarterlyReturn decimals="4" contextRef="Duration_01May2012_30Apr2013S000015009_MemberC000040850_Member" unitRef="pure">0.1607</rr:BarChartHighestQuarterlyReturn>
  <rr:LowestQuarterlyReturnLabel contextRef="Duration_01May2012_30Apr2013S000015009_MemberC000040850_Member">Worst Quarter (of periods shown)</rr:LowestQuarterlyReturnLabel>
  <rr:BarChartLowestQuarterlyReturnDate contextRef="Duration_01May2012_30Apr2013S000015009_MemberC000040850_Member">2008-12-31</rr:BarChartLowestQuarterlyReturnDate>
  <rr:BarChartLowestQuarterlyReturn decimals="4" contextRef="Duration_01May2012_30Apr2013S000015009_MemberC000040850_Member" unitRef="pure">-0.3133</rr:BarChartLowestQuarterlyReturn>
  <rr:AnnualReturn2007 decimals="4" contextRef="Duration_01May2012_30Apr2013S000015009_MemberC000040850_Member" unitRef="pure">0.2185</rr:AnnualReturn2007>
  <rr:AnnualReturn2008 decimals="4" contextRef="Duration_01May2012_30Apr2013S000015009_MemberC000040850_Member" unitRef="pure">-0.4004</rr:AnnualReturn2008>
  <rr:AnnualReturn2009 decimals="4" contextRef="Duration_01May2012_30Apr2013S000015009_MemberC000040850_Member" unitRef="pure">0.3107</rr:AnnualReturn2009>
  <rr:AnnualReturn2010 decimals="4" contextRef="Duration_01May2012_30Apr2013S000015009_MemberC000040850_Member" unitRef="pure">0.1722</rr:AnnualReturn2010>
  <rr:AnnualReturn2011 decimals="4" contextRef="Duration_01May2012_30Apr2013S000015009_MemberC000040850_Member" unitRef="pure">-0.1013</rr:AnnualReturn2011>
  <rr:AnnualReturn2012 decimals="4" contextRef="Duration_01May2012_30Apr2013S000015009_MemberC000040850_Member" unitRef="pure">0.049</rr:AnnualReturn2012>
  <rr:BarChartDoesNotReflectSalesLoads contextRef="Duration_01May2012_30Apr2013S000015005_Member">The returns shown do not reflect fees and charges imposed under the variable annuity contracts and life insurance policies through which an investment may be made. If those fees and charges were included, they would reduce these returns.</rr:BarChartDoesNotReflectSalesLoads>
  <rr:MaximumSalesChargeImposedOnPurchasesOverOfferingPrice decimals="4" contextRef="Duration_01May2012_30Apr2013S000015009_MemberC000040850_Member" unitRef="pure">0</rr:MaximumSalesChargeImposedOnPurchasesOverOfferingPrice>
  <rr:MaximumDeferredSalesChargeOverOfferingPrice decimals="4" contextRef="Duration_01May2012_30Apr2013S000015009_MemberC000040850_Member" unitRef="pure">0</rr:MaximumDeferredSalesChargeOverOfferingPrice>
  <rr:ManagementFeesOverAssets decimals="4" contextRef="Duration_01May2012_30Apr2013S000015009_MemberC000040850_Member" unitRef="pure">0.0065</rr:ManagementFeesOverAssets>
  <rr:AcquiredFundFeesAndExpensesOverAssets decimals="4" contextRef="Duration_01May2012_30Apr2013S000015009_MemberC000040850_Member" unitRef="pure">0.006</rr:AcquiredFundFeesAndExpensesOverAssets>
  <rr:ExpensesOverAssets decimals="4" contextRef="Duration_01May2012_30Apr2013S000015009_MemberC000040850_Member" unitRef="pure">0.0139</rr:ExpensesOverAssets>
  <rr:ExpenseExampleYear01 decimals="INF" contextRef="Duration_01May2012_30Apr2013S000015009_MemberC000040850_Member" unitRef="USD">142</rr:ExpenseExampleYear01>
  <rr:ExpenseExampleYear03 decimals="INF" contextRef="Duration_01May2012_30Apr2013S000015009_MemberC000040850_Member" unitRef="USD">440</rr:ExpenseExampleYear03>
  <rr:ExpenseExampleYear05 decimals="INF" contextRef="Duration_01May2012_30Apr2013S000015009_MemberC000040850_Member" unitRef="USD">761</rr:ExpenseExampleYear05>
  <rr:ExpenseExampleYear10 decimals="INF" contextRef="Duration_01May2012_30Apr2013S000015009_MemberC000040850_Member" unitRef="USD">1669</rr:ExpenseExampleYear10>
  <rr:ExpenseExampleNoRedemptionYear01 decimals="INF" contextRef="Duration_01May2012_30Apr2013S000015009_MemberC000040850_Member" unitRef="USD">142</rr:ExpenseExampleNoRedemptionYear01>
  <rr:ExpenseExampleNoRedemptionYear03 decimals="INF" contextRef="Duration_01May2012_30Apr2013S000015009_MemberC000040850_Member" unitRef="USD">440</rr:ExpenseExampleNoRedemptionYear03>
  <rr:ExpenseExampleNoRedemptionYear05 decimals="INF" contextRef="Duration_01May2012_30Apr2013S000015009_MemberC000040850_Member" unitRef="USD">761</rr:ExpenseExampleNoRedemptionYear05>
  <rr:ExpenseExampleNoRedemptionYear10 decimals="INF" contextRef="Duration_01May2012_30Apr2013S000015009_MemberC000040850_Member" unitRef="USD">1669</rr:ExpenseExampleNoRedemptionYear10>
  <rr:AverageAnnualReturnYear01 decimals="4" contextRef="Duration_01May2012_30Apr2013S000015009_MemberC000040850_Member" unitRef="pure">0.049</rr:AverageAnnualReturnYear01>
  <rr:AverageAnnualReturnYear01 decimals="4" contextRef="Duration_01May2012_30Apr2013S000015009_MemberSAndPFiveHundredIndex_Member" unitRef="pure">0.16</rr:AverageAnnualReturnYear01>
  <rr:AverageAnnualReturnYear01 decimals="4" contextRef="Duration_01May2012_30Apr2013S000015009_MemberNaturalResourcesCompositeBenchmark_Member" unitRef="pure">0.0057</rr:AverageAnnualReturnYear01>
  <rr:AverageAnnualReturnYear01 decimals="4" contextRef="Duration_01May2012_30Apr2013S000015009_MemberLipperVaNaturalResourcesFundsAverage_Member" unitRef="pure">0.0261</rr:AverageAnnualReturnYear01>
  <rr:AverageAnnualReturnYear05 decimals="4" contextRef="Duration_01May2012_30Apr2013S000015009_MemberC000040850_Member" unitRef="pure">-0.0278</rr:AverageAnnualReturnYear05>
  <rr:AverageAnnualReturnYear05 decimals="4" contextRef="Duration_01May2012_30Apr2013S000015009_MemberSAndPFiveHundredIndex_Member" unitRef="pure">0.0166</rr:AverageAnnualReturnYear05>
  <rr:AverageAnnualReturnYear05 decimals="4" contextRef="Duration_01May2012_30Apr2013S000015009_MemberNaturalResourcesCompositeBenchmark_Member" unitRef="pure">-0.0334</rr:AverageAnnualReturnYear05>
  <rr:AverageAnnualReturnYear05 decimals="4" contextRef="Duration_01May2012_30Apr2013S000015009_MemberLipperVaNaturalResourcesFundsAverage_Member" unitRef="pure">-0.0324</rr:AverageAnnualReturnYear05>
  <rr:AverageAnnualReturnInceptionDate contextRef="Duration_01May2012_30Apr2013S000015009_MemberC000040850_Member">2006-12-28</rr:AverageAnnualReturnInceptionDate>
  <rr:BarChartTableTextBlock contextRef="Duration_01May2012_30Apr2013S000015009_Member">&lt;div style="display:none"&gt;~ http://www.calvert.com/role/ScheduleAnnualTotalReturnsCalvertVPNaturalResourcesPortfolioBarChart column period compact * ~&lt;/div&gt;</rr:BarChartTableTextBlock>
  <rr:OtherExpensesOverAssets decimals="4" contextRef="Duration_01May2012_30Apr2013S000015009_MemberC000040850_Member" unitRef="pure">0.0014</rr:OtherExpensesOverAssets>
  <rr:ObjectivePrimaryTextBlock contextRef="Duration_01May2012_30Apr2013S000010996_MemberClassI_Member">The Portfolio seeks investment results that correspond to the total return performance of common stocks as represented by the MSCI EAFE (Standard) Index (&amp;#8220;MSCI EAFE Index&amp;#8221;). The MSCI EAFE Index emphasizes the stocks of companies in major markets in Europe, Australasia, and the Far East. This objective may be changed by the Portfolio&amp;#8217;s Board of Directors without shareholder approval.</rr:ObjectivePrimaryTextBlock>
  <rr:ExpenseExampleNarrativeTextBlock contextRef="Duration_01May2012_30Apr2013S000015009_Member">This example is intended to help you compare the cost of investing in the Portfolio with the cost of investing in other mutual funds. The example assumes that:&lt;ul type="square"&gt;&lt;li style="margin-left:-20px"&gt;you invest $10,000 in the Portfolio for the time periods indicated; &lt;/li&gt;&lt;li style="margin-left:-20px"&gt;your investment has a 5% return each year; &lt;/li&gt;&lt;li style="margin-left:-20px"&gt;the Portfolio&amp;#8217;s operating expenses remain the same; and &lt;/li&gt;&lt;li style="margin-left:-20px"&gt;any Calvert expense limitation is in effect for the period indicated in the fee table above. &lt;/li&gt;&lt;/ul&gt;Although your actual costs may be higher or lower, under these assumptions your costs would be:</rr:ExpenseExampleNarrativeTextBlock>
  <rr:ExpenseExampleNoRedemptionTableTextBlock contextRef="Duration_01May2012_30Apr2013S000015009_Member">&lt;div style="display:none"&gt;~ http://www.calvert.com/role/ScheduleExpenseExampleNoRedemptionTransposedCalvertVPNaturalResourcesPortfolio column period compact * ~&lt;/div&gt;</rr:ExpenseExampleNoRedemptionTableTextBlock>
  <rr:RiskReturnHeading contextRef="Duration_01May2012_30Apr2013S000010996_MemberClassI_Member">&lt;b&gt;CALVERT VP EAFE INTERNATIONAL INDEX PORTFOLIO&lt;/b&gt;&lt;br/&gt;&lt;br/&gt;&lt;b&gt;Class: I&lt;/b&gt;</rr:RiskReturnHeading>
  <rr:ObjectiveHeading contextRef="Duration_01May2012_30Apr2013S000010996_MemberClassI_Member">&lt;b&gt;INVESTMENT OBJECTIVE &lt;/b&gt;</rr:ObjectiveHeading>
  <rr:ExpenseHeading contextRef="Duration_01May2012_30Apr2013S000010996_MemberClassI_Member">&lt;b&gt;FEES AND EXPENSES OF THE PORTFOLIO &lt;/b&gt;</rr:ExpenseHeading>
  <rr:ExpenseNarrativeTextBlock contextRef="Duration_01May2012_30Apr2013S000010996_MemberClassI_Member">This table describes the fees and expenses that you may pay if you invest in shares of the Portfolio. &lt;br/&gt;&lt;br/&gt;The table and the following example do not reflect fees and charges imposed under the variable annuity contracts and life insurance policies (each a &amp;#8220;Policy&amp;#8221;) through which an investment may be made. If those fees and charges were included, costs would be higher. Please consult the prospectus for your Policy for information regarding those fees and charges.</rr:ExpenseNarrativeTextBlock>
  <rr:ShareholderFeesCaption contextRef="Duration_01May2012_30Apr2013S000010996_MemberClassI_Member">&lt;b&gt;Shareholder Fees&lt;/b&gt; (fees paid directly from your investment)</rr:ShareholderFeesCaption>
  <rr:MaximumSalesChargeImposedOnPurchasesOverOfferingPrice decimals="4" contextRef="Duration_01May2012_30Apr2013S000010996_MemberC000030373_MemberClassI_Member" unitRef="pure">0</rr:MaximumSalesChargeImposedOnPurchasesOverOfferingPrice>
  <rr:MaximumDeferredSalesChargeOverOfferingPrice decimals="4" contextRef="Duration_01May2012_30Apr2013S000010996_MemberC000030373_MemberClassI_Member" unitRef="pure">0</rr:MaximumDeferredSalesChargeOverOfferingPrice>
  <rr:OperatingExpensesCaption contextRef="Duration_01May2012_30Apr2013S000010996_MemberClassI_Member">&lt;b&gt;Annual Fund Operating Expenses&lt;/b&gt; (expenses that you pay each year as &lt;br/&gt;a % of the value of your investment)</rr:OperatingExpensesCaption>
  <rr:ManagementFeesOverAssets decimals="4" contextRef="Duration_01May2012_30Apr2013S000010996_MemberC000030373_MemberClassI_Member" unitRef="pure">0.0066</rr:ManagementFeesOverAssets>
  <rr:OtherExpensesOverAssets decimals="4" contextRef="Duration_01May2012_30Apr2013S000010996_MemberC000030373_MemberClassI_Member" unitRef="pure">0.003</rr:OtherExpensesOverAssets>
  <rr:ExpensesOverAssets decimals="4" contextRef="Duration_01May2012_30Apr2013S000010996_MemberC000030373_MemberClassI_Member" unitRef="pure">0.0096</rr:ExpensesOverAssets>
  <rr:ExpenseExampleHeading contextRef="Duration_01May2012_30Apr2013S000010996_MemberClassI_Member">&lt;b&gt;Example&lt;/b&gt;</rr:ExpenseExampleHeading>
  <rr:ExpenseExampleNarrativeTextBlock contextRef="Duration_01May2012_30Apr2013S000010996_MemberClassI_Member">This example is intended to help you compare the cost of investing in the Portfolio with the cost of investing in other mutual funds. The example assumes that: &lt;ul type="square"&gt;&lt;li style="margin-left:-20px"&gt; you invest $10,000 in the Portfolio for the time periods indicated;&lt;/li&gt;&lt;li style="margin-left:-20px"&gt;your investment has a 5% return each year;&lt;/li&gt;&lt;li style="margin-left:-20px"&gt;the Portfolio&amp;#8217;s operating expenses remain the same; and&lt;/li&gt;&lt;li style="margin-left:-20px"&gt;any Calvert expense limitation is in effect for the period indicated in the fee table above.&lt;/li&gt;&lt;/ul&gt; Although your actual costs may be higher or lower, under these assumptions your costs would be:</rr:ExpenseExampleNarrativeTextBlock>
  <rr:ExpenseExampleYear01 decimals="INF" contextRef="Duration_01May2012_30Apr2013S000010996_MemberC000030373_MemberClassI_Member" unitRef="USD">98</rr:ExpenseExampleYear01>
  <rr:ExpenseExampleYear03 decimals="INF" contextRef="Duration_01May2012_30Apr2013S000010996_MemberC000030373_MemberClassI_Member" unitRef="USD">306</rr:ExpenseExampleYear03>
  <rr:ExpenseExampleYear05 decimals="INF" contextRef="Duration_01May2012_30Apr2013S000010996_MemberC000030373_MemberClassI_Member" unitRef="USD">531</rr:ExpenseExampleYear05>
  <rr:ExpenseExampleYear10 decimals="INF" contextRef="Duration_01May2012_30Apr2013S000010996_MemberC000030373_MemberClassI_Member" unitRef="USD">1178</rr:ExpenseExampleYear10>
  <rr:PortfolioTurnoverTextBlock contextRef="Duration_01May2012_30Apr2013S000010996_MemberClassI_Member">The Portfolio pays transaction costs, such as commissions, when it buys and sells securities (&amp;#8220;turns over&amp;#8221; its portfolio). A higher portfolio turnover rate may indicate higher transaction costs. These costs, which are not reflected in annual fund operating expenses or in the &amp;#8220;Example&amp;#8221;, affect the Portfolio&amp;#8217;s performance. During the most recent fiscal year, the Portfolio&amp;#8217;s portfolio turnover rate was 16% of its portfolio&amp;#8217;s average value.</rr:PortfolioTurnoverTextBlock>
  <rr:PortfolioTurnoverHeading contextRef="Duration_01May2012_30Apr2013S000010996_MemberClassI_Member">&lt;b&gt;Portfolio Turnover&lt;/b&gt;</rr:PortfolioTurnoverHeading>
  <rr:PortfolioTurnoverRate decimals="4" contextRef="Duration_01May2012_30Apr2013S000010996_MemberClassI_Member" unitRef="pure">0.16</rr:PortfolioTurnoverRate>
  <rr:ShareholderFeesTableTextBlock contextRef="Duration_01May2012_30Apr2013S000010997_Member">&lt;div style="display:none"&gt;~ http://www.calvert.com/role/ScheduleShareholderFeesCalvertVPBarclaysCapitalAggregateBondIndexPortfolio column period compact * ~&lt;/div&gt;</rr:ShareholderFeesTableTextBlock>
  <rr:ExpenseExampleWithRedemptionTableTextBlock contextRef="Duration_01May2012_30Apr2013S000010997_Member">&lt;div style="display:none"&gt;~ http://www.calvert.com/role/ScheduleExpenseExampleTransposedCalvertVPBarclaysCapitalAggregateBondIndexPortfolio column period compact * ~&lt;/div&gt;</rr:ExpenseExampleWithRedemptionTableTextBlock>
  <rr:BarChartTableTextBlock contextRef="Duration_01May2012_30Apr2013S000010997_Member">&lt;div style="display:none"&gt;~ http://www.calvert.com/role/ScheduleAnnualTotalReturnsCalvertVPBarclaysCapitalAggregateBondIndexPortfolioBarChart column period compact * ~&lt;/div&gt;</rr:BarChartTableTextBlock>
  <rr:PerformanceTableTextBlock contextRef="Duration_01May2012_30Apr2013S000010997_Member">&lt;div style="display:none"&gt;~ http://www.calvert.com/role/ScheduleAverageAnnualTotalReturnsTransposedCalvertVPBarclaysCapitalAggregateBondIndexPortfolio column period compact * ~&lt;/div&gt;</rr:PerformanceTableTextBlock>
  <rr:AnnualFundOperatingExpensesTableTextBlock contextRef="Duration_01May2012_30Apr2013S000010997_Member">&lt;div style="display:none"&gt;~ http://www.calvert.com/role/ScheduleAnnualFundOperatingExpensesCalvertVPBarclaysCapitalAggregateBondIndexPortfolio column period compact * ~&lt;/div&gt;</rr:AnnualFundOperatingExpensesTableTextBlock>
  <rr:ExpenseExampleNoRedemptionTableTextBlock contextRef="Duration_01May2012_30Apr2013S000010997_Member">&lt;div style="display:none"&gt;~ http://www.calvert.com/role/ScheduleExpenseExampleNoRedemptionTransposedCalvertVPBarclaysCapitalAggregateBondIndexPortfolio column period compact * ~&lt;/div&gt;</rr:ExpenseExampleNoRedemptionTableTextBlock>
  <rr:RiskReturnHeading contextRef="Duration_01May2012_30Apr2013S000010996_MemberClassF_Member">&lt;b&gt;Calvert VP EAFE International Index Portfolio&lt;br/&gt;&lt;br/&gt; Class F&lt;/b&gt;</rr:RiskReturnHeading>
  <rr:ObjectiveHeading contextRef="Duration_01May2012_30Apr2013S000010996_MemberClassF_Member">&lt;b&gt;INVESTMENT OBJECTIVE&lt;/b&gt;</rr:ObjectiveHeading>
  <rr:ObjectivePrimaryTextBlock contextRef="Duration_01May2012_30Apr2013S000010996_MemberClassF_Member">The Portfolio seeks investment results that correspond to the total return performance of common stocks as represented by the MSCI EAFE (Standard) Index (&amp;#8220;MSCI EAFE Index&amp;#8221;). The MSCI EAFE Index emphasizes the stocks of companies in major markets in Europe, Australasia, and the Far East. This objective may be changed by the Portfolio&amp;#8217;s Board of Directors without shareholder approval.</rr:ObjectivePrimaryTextBlock>
  <rr:ExpenseHeading contextRef="Duration_01May2012_30Apr2013S000010996_MemberClassF_Member">&lt;b&gt;FEES AND EXPENSES OF THE PORTFOLIO&lt;/b&gt;</rr:ExpenseHeading>
  <rr:ExpenseNarrativeTextBlock contextRef="Duration_01May2012_30Apr2013S000010996_MemberClassF_Member">This table describes the fees and expenses that you may pay if you invest in shares of the Portfolio.&lt;br/&gt;&lt;br/&gt;The table and the following example do not reflect fees and charges imposed under the variable annuity contracts and life insurance policies (each a &amp;#8220;Policy&amp;#8221;) through which an investment may be made. If those fees and charges were included, costs would be higher. Please consult the prospectus for your Policy for information regarding those fees and charges.</rr:ExpenseNarrativeTextBlock>
  <rr:OperatingExpensesCaption contextRef="Duration_01May2012_30Apr2013S000010996_MemberClassF_Member">&lt;b&gt;Annual Fund Operating Expenses&lt;/b&gt; (expenses that you pay each year as &lt;br/&gt; a % of the value of your investment)</rr:OperatingExpensesCaption>
  <rr:ShareholderFeesCaption contextRef="Duration_01May2012_30Apr2013S000010996_MemberClassF_Member">&lt;b&gt;Shareholder Fees&lt;/b&gt; (fees paid directly from your investment)</rr:ShareholderFeesCaption>
  <rr:PortfolioTurnoverHeading contextRef="Duration_01May2012_30Apr2013S000010996_MemberClassF_Member">&lt;b&gt;Portfolio Turnover&lt;/b&gt;</rr:PortfolioTurnoverHeading>
  <rr:PortfolioTurnoverTextBlock contextRef="Duration_01May2012_30Apr2013S000010996_MemberClassF_Member">The Portfolio pays transaction costs, such as commissions, when it buys and sells securities (&amp;#8220;turns over&amp;#8221; its portfolio). A higher portfolio turnover rate may indicate higher transaction costs. These costs, which are not reflected in annual fund operating expenses or in the &amp;#8220;Example&amp;#8221;, affect the Portfolio&amp;#8217;s performance. During the most recent fiscal year, the Portfolio&amp;#8217;s portfolio turnover rate was 16% of its portfolio&amp;#8217;s average value.</rr:PortfolioTurnoverTextBlock>
  <rr:ExpenseExampleHeading contextRef="Duration_01May2012_30Apr2013S000010996_MemberClassF_Member">&lt;b&gt;Example&lt;/b&gt;</rr:ExpenseExampleHeading>
  <rr:RiskReturnHeading contextRef="Duration_01May2012_30Apr2013S000010995_MemberClassF_Member">&lt;b&gt;CALVERT VP RUSSELL 2000 SMALL CAP INDEX PORTFOLIO&lt;/b&gt;&lt;br/&gt;&lt;br/&gt;&lt;b&gt;Class: F&lt;/b&gt;</rr:RiskReturnHeading>
  <rr:ObjectiveHeading contextRef="Duration_01May2012_30Apr2013S000010995_MemberClassF_Member">&lt;b&gt;INVESTMENT OBJECTIVE&lt;/b&gt;</rr:ObjectiveHeading>
  <rr:ObjectivePrimaryTextBlock contextRef="Duration_01May2012_30Apr2013S000010995_MemberClassF_Member">The Portfolio seeks investment results that correspond to the investment performance of U.S. common stocks, as represented by the Russell 2000 Index. This objective may be changed by the Portfolio&amp;#8217;s Board of Directors without shareholder approval.</rr:ObjectivePrimaryTextBlock>
  <rr:ExpenseHeading contextRef="Duration_01May2012_30Apr2013S000010995_MemberClassF_Member">&lt;b&gt;FEES AND EXPENSES OF THE PORTFOLIO&lt;/b&gt;</rr:ExpenseHeading>
  <rr:ExpenseNarrativeTextBlock contextRef="Duration_01May2012_30Apr2013S000010995_MemberClassF_Member">This table describes the fees and expenses that you may pay if you invest in shares of the Portfolio.&lt;br/&gt;&lt;br/&gt;The table and the following example do not reflect fees and charges imposed under the variable annuity contracts and life insurance policies (each a &amp;#8220;Policy&amp;#8221;) through which an investment may be made. If those fees and charges were included, costs would be higher. Please consult the prospectus for your Policy for information regarding those fees and charges.</rr:ExpenseNarrativeTextBlock>
  <rr:ShareholderFeesCaption contextRef="Duration_01May2012_30Apr2013S000010995_MemberClassF_Member">&lt;b&gt;Shareholder Fees&lt;/b&gt; (fees paid directly from your investment)</rr:ShareholderFeesCaption>
  <rr:StrategyHeading contextRef="Duration_01May2012_30Apr2013S000010996_MemberClassF_Member">&lt;b&gt;INVESTMENTS, RISKS AND PERFORMANCE &lt;br/&gt;&lt;br/&gt;Principal Investment Strategies&lt;/b&gt;</rr:StrategyHeading>
  <rr:RiskHeading contextRef="Duration_01May2012_30Apr2013S000010996_MemberClassF_Member">&lt;b&gt;Principal Risks&lt;/b&gt;</rr:RiskHeading>
  <rr:OperatingExpensesCaption contextRef="Duration_01May2012_30Apr2013S000010995_MemberClassF_Member">&lt;b&gt;Annual Fund Operating Expenses&lt;/b&gt; (expenses that you pay each year as&lt;br/&gt;a % of the value of your investment)</rr:OperatingExpensesCaption>
  <rr:RiskReturnHeading contextRef="Duration_01May2012_30Apr2013S000010992_MemberClassF_Member">&lt;b&gt;CALVERT VP S&amp;P MIDCAP 400 INDEX PORTFOLIO&lt;br/&gt;&lt;br/&gt;Class: F&lt;/b&gt;</rr:RiskReturnHeading>
  <rr:RiskReturnHeading contextRef="Duration_01May2012_30Apr2013S000040491_Member">&lt;b&gt;CALVERT VP VOLATILITY MANAGED MODERATE&lt;br/&gt; GROWTH PORTFOLIO&lt;/b&gt;&lt;br/&gt;&lt;br/&gt;&lt;b&gt;Class: F&lt;/b&gt;</rr:RiskReturnHeading>
  <rr:ExpenseExampleHeading contextRef="Duration_01May2012_30Apr2013S000010995_MemberClassF_Member">&lt;b&gt;EXAMPLE&lt;/b&gt;</rr:ExpenseExampleHeading>
  <rr:BarChartAndPerformanceTableHeading contextRef="Duration_01May2012_30Apr2013S000010996_MemberClassF_Member">&lt;b&gt;Performance&lt;/b&gt;</rr:BarChartAndPerformanceTableHeading>
  <rr:PerformanceNarrativeTextBlock contextRef="Duration_01May2012_30Apr2013S000010996_MemberClassF_Member">The following bar chart and table show the Portfolio&amp;#8217;s annual returns and its long-term performance, which give some indication of the risks of investing in the Portfolio. The bar chart shows how the performance has varied from year to year. The table compares the Portfolio&amp;#8217;s performance over time with that of a benchmark index and a peer average.&lt;br/&gt;&lt;br/&gt; Investors should note that the performance presented in the bar chart and table below for periods prior to the inception date of the Class F shares on December 17, 2007 is that of the Portfolio's Class I shares, adjusted to account for the different expense characteristics of the Class F shares. Both classes of shares of the Portfolio will have substantially similar annual returns because all classes of shares of the Portfolio invest in the same pool of investments, although Class F shares&amp;#8217; performance will be lower than the performance of the Class I shares of the Portfolio because Class F shares have higher operating expenses due to the Class F shares&amp;#8217; Rule 12b-1 fees.&lt;br/&gt;&lt;br/&gt;The Portfolio&amp;#8217;s past performance does not necessarily indicate how the Portfolio will perform in the future. For updated performance information, visit www.calvert.com. &lt;br/&gt;&lt;br/&gt;The returns shown do not reflect fees and charges imposed under the variable annuity contracts and life insurance policies through which an investment may be made. If those fees and charges were included, they would reduce these returns.</rr:PerformanceNarrativeTextBlock>
  <rr:ObjectiveHeading contextRef="Duration_01May2012_30Apr2013S000010992_MemberClassF_Member">&lt;b&gt;INVESTMENT OBJECTIVE&lt;/b&gt;</rr:ObjectiveHeading>
  <rr:BarChartHeading contextRef="Duration_01May2012_30Apr2013S000010996_MemberClassF_Member">&lt;b&gt;Calendar Year Total Returns&lt;/b&gt;</rr:BarChartHeading>
  <rr:PerformanceTableHeading contextRef="Duration_01May2012_30Apr2013S000010996_MemberClassF_Member">&lt;b&gt;Average Annual Total Returns&lt;br/&gt; (as of 12/31/12)&lt;/b&gt;</rr:PerformanceTableHeading>
  <rr:ExpenseHeading contextRef="Duration_01May2012_30Apr2013S000010992_MemberClassF_Member">&lt;b&gt;FEES AND EXPENSES OF THE PORTFOLIO&lt;/b&gt;</rr:ExpenseHeading>
  <rr:ExpenseNarrativeTextBlock contextRef="Duration_01May2012_30Apr2013S000010992_MemberClassF_Member">This table describes the fees and expenses that you may pay if you invest in shares of the Portfolio.&lt;br/&gt;&lt;br/&gt;The table and the following example do not reflect fees and charges imposed under the variable annuity contracts and life insurance policies (each a &amp;#8220;Policy&amp;#8221;) through which an investment may be made. If those fees and charges were included, costs would be higher. Please consult the prospectus for your Policy for information regarding those fees and charges.</rr:ExpenseNarrativeTextBlock>
  <rr:ExpenseHeading contextRef="Duration_01May2012_30Apr2013S000040492_Member">&lt;b&gt;FEES AND EXPENSES OF THE PORTFOLIO &lt;/b&gt;</rr:ExpenseHeading>
  <rr:ShareholderFeesCaption contextRef="Duration_01May2012_30Apr2013S000010992_MemberClassF_Member">&lt;b&gt;Shareholder Fees&lt;/b&gt; (fees paid directly from your investment)</rr:ShareholderFeesCaption>
  <rr:PortfolioTurnoverHeading contextRef="Duration_01May2012_30Apr2013S000010995_MemberClassF_Member">&lt;b&gt;Portfolio Turnover&lt;/b&gt;</rr:PortfolioTurnoverHeading>
  <rr:PortfolioTurnoverTextBlock contextRef="Duration_01May2012_30Apr2013S000010995_MemberClassF_Member">The Portfolio pays transaction costs, such as commissions, when it buys and sells securities (&amp;#8220;turns over&amp;#8221; its portfolio). A higher portfolio turnover rate may indicate higher transaction costs. These costs, which are not reflected in annual fund operating expenses or in the &amp;#8220;Example&amp;#8221;, affect the Portfolio&amp;#8217;s performance. During the most recent fiscal year, the Portfolio&amp;#8217;s portfolio turnover rate was 13% of its portfolio&amp;#8217;s average value.</rr:PortfolioTurnoverTextBlock>
  <rr:ExpenseNarrativeTextBlock contextRef="Duration_01May2012_30Apr2013S000040492_Member">This table describes the fees and expenses that you may pay if you invest in shares of the Portfolio.&lt;br/&gt;&lt;br/&gt;The table and the following example do not reflect fees and charges imposed under the variable annuity contracts and life insurance policies (each a &amp;#8220;Policy&amp;#8221;) through which an investment may be made. If those fees and charges were included, costs would be higher. Please consult the prospectus for your Policy for information regarding those fees and charges.</rr:ExpenseNarrativeTextBlock>
  <rr:ObjectiveHeading contextRef="Duration_01May2012_30Apr2013S000040492_Member">&lt;b&gt;INVESTMENT OBJECTIVE&lt;/b&gt;</rr:ObjectiveHeading>
  <rr:OperatingExpensesCaption contextRef="Duration_01May2012_30Apr2013S000010992_MemberClassF_Member">&lt;b&gt;Annual Fund Operating Expenses&lt;/b&gt; (expenses that you pay each year as&lt;br/&gt;a % of the value of your investment)</rr:OperatingExpensesCaption>
  <rr:ShareholderFeesCaption contextRef="Duration_01May2012_30Apr2013S000040492_Member">&lt;b&gt;Shareholder Fees &lt;/b&gt;(fees paid directly from your investment)</rr:ShareholderFeesCaption>
  <rr:ExpenseExampleHeading contextRef="Duration_01May2012_30Apr2013S000010992_MemberClassF_Member">&lt;b&gt;Example&lt;/b&gt;</rr:ExpenseExampleHeading>
  <rr:StrategyHeading contextRef="Duration_01May2012_30Apr2013S000010995_MemberClassF_Member">&lt;b&gt;INVESTMENTS, RISKS AND PERFORMANCE&lt;/b&gt;&lt;br/&gt;&lt;br/&gt;&lt;b&gt;Principal Investment Strategies&lt;/b&gt;</rr:StrategyHeading>
  <rr:ObjectivePrimaryTextBlock contextRef="Duration_01May2012_30Apr2013S000040491_Member">The Portfolio pursues a balance of current income and growth potential, while seeking to manage overall portfolio volatility. This objective may be changed by the Portfolio&amp;#8217;s Board of Directors without shareholder approval.</rr:ObjectivePrimaryTextBlock>
  <rr:OperatingExpensesCaption contextRef="Duration_01May2012_30Apr2013S000040492_Member">&lt;b&gt;Annual Fund Operating Expenses &lt;/b&gt;(expenses that you pay each year as&lt;br/&gt;a % of the value of your investment)</rr:OperatingExpensesCaption>
  <rr:ExpenseHeading contextRef="Duration_01May2012_30Apr2013S000040491_Member">&lt;b&gt; FEES AND EXPENSES OF THE PORTFOLIO&lt;/b&gt;</rr:ExpenseHeading>
  <rr:ExpenseExampleHeading contextRef="Duration_01May2012_30Apr2013S000040492_Member">&lt;b&gt;Example&lt;/b&gt;</rr:ExpenseExampleHeading>
  <rr:StrategyNarrativeTextBlock contextRef="Duration_01May2012_30Apr2013S000010995_MemberClassF_Member">The Portfolio seeks to substantially replicate the total return of the securities comprising the Russell 2000 Index, taking into consideration redemptions, sales of additional shares, and other adjustments described below. The Russell 2000 Index is an unmanaged index of common stocks comprised of approximately 2000 common stocks of smaller U.S. companies that aims to include approximately 10% of the total market capitalization of the broader Russell 3000 Index. As of December 31, 2012, the market capitalization of the Russell 2000 Index companies ranged from $28 million to $4.7 billion with a weighted median level of $1.2 billion and a weighted average level of $1.3 billion. The Russell 2000 Index is capitalization-weighted, meaning that companies with larger market capitalizations will contribute more to the Index's value than companies whose securities have smaller market capitalizations.&lt;br/&gt;&lt;br/&gt; The Portfolio will invest primarily in common stocks of the companies that comprise the Russell 2000 Index. The Portfolio may also invest in Russell 2000 iShares&lt;sup&gt;&amp;#174; &lt;/sup&gt;or other investment companies that provide the same exposure to the Russell 2000 Index. Russell 2000 iShares&lt;sup&gt;&amp;#174; &lt;/sup&gt;are units of beneficial interest in a unit investment trust, representing proportionate undivided interests in a portfolio of securities in substantially the same weighting as the common stocks that comprise the Russell 2000 Index. Derivatives such as Russell 2000 Index options and futures, and options on such futures (or S&amp;#38;P MidCap 400 or S&amp;#38;P 500 Index options and futures, and options on such futures, if, in the opinion of the Advisor or Subadvisor, it is not practical to invest in Russell 2000 index options or futures, or options on such futures, at a particular time due to liquidity or price considerations), may also be held by the Portfolio incidental to its main investment strategy in order to invest uncommitted cash balances, to maintain liquidity to meet shareholder redemptions, or minimize trading costs. The Portfolio may also sell covered calls on futures contracts or individual securities held in the Portfolio.&lt;br/&gt;&lt;br/&gt; Under normal circumstances, the Portfolio will invest at least 80% of its net assets in investments with economic characteristics similar to small cap stocks as represented in the Russell 2000 Index. The Portfolio will provide shareholders with at least 60 days' notice before changing this 80% policy. While not required, the Portfolio will generally sell securities that the Index manager removes from the Index. Although the Subadvisor will attempt to invest and maintain as much of the Portfolio's assets as is practical in stocks included among the Russell 2000 Index and futures contracts and options relating thereto under normal market conditions, a portion of the Portfolio may be invested in money market instruments pending investment or to meet redemption requests or other needs for liquid assets.</rr:StrategyNarrativeTextBlock>
  <rr:ExpenseNarrativeTextBlock contextRef="Duration_01May2012_30Apr2013S000040491_Member">This table describes the fees and expenses that you may pay if you invest in shares of the Portfolio.&lt;br/&gt;&lt;br/&gt;The table and the following example do not reflect fees and charges imposed under the variable annuity contracts and life insurance policies (each a &amp;#8220;Policy&amp;#8221;) through which an investment may be made. If those fees and charges were included, costs would be higher. Please consult the prospectus for your Policy for information regarding those fees and charges.</rr:ExpenseNarrativeTextBlock>
  <rr:RiskHeading contextRef="Duration_01May2012_30Apr2013S000010995_MemberClassF_Member">&lt;b&gt;Principal Risks&lt;/b&gt;</rr:RiskHeading>
  <rr:ExpenseExampleNarrativeTextBlock contextRef="Duration_01May2012_30Apr2013S000010992_MemberClassF_Member">This example is intended to help you compare the cost of investing in the Portfolio with the cost of investing in other mutual funds. The example assumes that:&lt;ul type="square"&gt;&lt;li style="margin-left:-20px"&gt;you invest $10,000 in the Portfolio for the time periods indicated;&lt;/li&gt;&lt;li style="margin-left:-20px"&gt;your investment has a 5% return each year;&lt;/li&gt;&lt;li style="margin-left:-20px"&gt;the Portfolio&amp;#8217;s operating expenses remain the same; and&lt;/li&gt;&lt;li style="margin-left:-20px"&gt;any Calvert expense limitation is in effect for the period indicated in the fee table above.&lt;/li&gt;&lt;/ul&gt;Although your actual costs may be higher or lower, under these assumptions your costs would be:</rr:ExpenseExampleNarrativeTextBlock>
  <rr:RiskNarrativeTextBlock contextRef="Duration_01May2012_30Apr2013S000010995_MemberClassF_Member">You could lose money on your investment in the Portfolio, or the Portfolio could underperform, because of the risks described below. An investment in the Portfolio is not a bank deposit and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.&lt;br/&gt;&lt;br/&gt; Management Risk. Individual investments of the Portfolio may not perform as expected, and the portfolio management practices may not achieve the desired result.&lt;br/&gt;&lt;br/&gt; Stock Market Risk. The market prices of stocks held by the Portfolio may fall.&lt;br/&gt;&lt;br/&gt; Index Tracking Risk. An index fund has operating expenses; a market index does not. The Portfolio, while expected to track its target index as closely as possible, will not be able to match the performance of the index exactly.&lt;br/&gt;&lt;br/&gt; Common Stock Risk. Although common stocks have a history of long-term growth in value, their prices fluctuate based on changes in a company's financial condition, on overall market and economic conditions, and on investors' perception of a company's well-being.&lt;br/&gt;&lt;br/&gt; Small-Cap Company Risk. Prices of small-cap stocks can be more volatile than those of larger, more established companies. Small-cap companies are more likely to have more limited product lines, fewer capital resources and less depth of management than larger companies.&lt;br/&gt;&lt;br/&gt; Investments in Other Investment Companies. The risks of investing in other investment companies typically reflect the risks of the types of securities in which those investment companies invest. When the Portfolio invests in another investment company, shareholders of the Portfolio bear their proportionate share of the other investment company's fees and expenses as well as their share of the Portfolio's fees and expenses.&lt;br/&gt;&lt;br/&gt; Stock Index Futures and Options Risk. Using stock index futures and options may increase the Portfolio's volatility and may involve a small cash investment relative to the magnitude of risk assumed. If changes in a derivative's value do not correspond to changes in the value of the Portfolio's other investments, the Portfolio may not fully benefit from or could lose money on the derivative position. Derivatives can involve risk of loss if the party who issued the derivative defaults on its obligation. Derivatives may also be less liquid and more difficult to value.</rr:RiskNarrativeTextBlock>
  <rr:ShareholderFeesCaption contextRef="Duration_01May2012_30Apr2013S000040491_Member">&lt;b&gt;Shareholder Fees&lt;/b&gt; (fees paid directly from your investment)</rr:ShareholderFeesCaption>
  <rr:BarChartAndPerformanceTableHeading contextRef="Duration_01May2012_30Apr2013S000010995_MemberClassF_Member">&lt;b&gt;Performance&lt;/b&gt;</rr:BarChartAndPerformanceTableHeading>
  <rr:PortfolioTurnoverHeading contextRef="Duration_01May2012_30Apr2013S000010992_MemberClassF_Member">&lt;b&gt;Portfolio Turnover&lt;/b&gt;</rr:PortfolioTurnoverHeading>
  <rr:PortfolioTurnoverTextBlock contextRef="Duration_01May2012_30Apr2013S000010992_MemberClassF_Member">The Portfolio pays transaction costs, such as commissions, when it buys and sells securities (&amp;#8220;turns over&amp;#8221; its portfolio). A higher portfolio turnover rate may indicate higher transaction costs. These costs, which are not reflected in annual fund operating expenses or in the "Example", affect the Portfolio&amp;#8217;s performance. During the most recent fiscal year, the Portfolio&amp;#8217;s portfolio turnover rate was 10% of its portfolio&amp;#8217;s average value.</rr:PortfolioTurnoverTextBlock>
  <rr:ExpenseExampleNarrativeTextBlock contextRef="Duration_01May2012_30Apr2013S000040492_Member">This example is intended to help you compare the cost of investing in the Portfolio with the cost of investing in other mutual funds. The example assumes that:&lt;ul type="square"&gt;&lt;li style="margin-left:-20px"&gt;you invest $10,000 in the Portfolio for the time periods indicated;&lt;/li&gt;&lt;li style="margin-left:-20px"&gt; your investment has a 5% return each year;&lt;/li&gt;&lt;li style="margin-left:-20px"&gt;the Portfolio&amp;#8217;s operating expenses remain the same; and &lt;/li&gt;&lt;li style="margin-left:-20px"&gt;any Calvert expense limitation is in effect for the period indicated in the fee table above.&lt;/li&gt;&lt;/ul&gt;Although your actual costs may be higher or lower, under these assumptions your costs would be:</rr:ExpenseExampleNarrativeTextBlock>
  <rr:PerformanceNarrativeTextBlock contextRef="Duration_01May2012_30Apr2013S000010995_MemberClassF_Member">The following bar chart and table show the Portfolio&amp;#8217;s annual returns and its long-term performance, which give some indication of the risks of investing in the Portfolio. The bar chart shows how the performance has varied from year to year. The table compares the Portfolio&amp;#8217;s performance over time with that of a benchmark index and a peer average.&lt;br/&gt;&lt;br/&gt;Investors should note that the performance presented in the bar chart and table below for periods prior to the inception date of the Class F shares on October 4, 2005 is that of the Portfolio's Class I shares, adjusted to account for the different expense characteristics of the Class F shares. Both classes of shares of the Portfolio will have substantially similar annual returns because all classes of shares of the Portfolio invest in the same pool of investments, although Class F shares&amp;#8217; performance will be lower than the performance of the Class I shares of the Portfolio because Class F shares have higher operating expenses due to the Class F shares&amp;#8217; Rule 12b-1 fees.&lt;br/&gt;&lt;br/&gt;The Portfolio&amp;#8217;s past performance does not necessarily indicate how the Portfolio will perform in the future. For updated performance information, visit www.calvert.com.&lt;br/&gt;&lt;br/&gt;The returns shown do not reflect fees and charges imposed under the variable annuity contracts and life insurance policies through which an investment may be made. If those fees and charges were included, they would reduce these returns.</rr:PerformanceNarrativeTextBlock>
  <rr:PortfolioTurnoverHeading contextRef="Duration_01May2012_30Apr2013S000040492_Member">&lt;b&gt;Portfolio Turnover&lt;/b&gt;</rr:PortfolioTurnoverHeading>
  <rr:OperatingExpensesCaption contextRef="Duration_01May2012_30Apr2013S000040491_Member">&lt;b&gt;Annual Fund Operating Expenses&lt;/b&gt; (expenses that you pay each year as&lt;br/&gt;a % of the value of your investment)</rr:OperatingExpensesCaption>
  <rr:PortfolioTurnoverTextBlock contextRef="Duration_01May2012_30Apr2013S000040492_Member">The Portfolio pays transaction costs, such as commissions, when it buys and sells securities (&amp;#8220;turns over&amp;#8221; its portfolio). A higher portfolio turnover rate may indicate higher transaction costs. These costs, which are not reflected in annual fund operating expenses or in the &amp;#8220;Example&amp;#8221;, affect the Portfolio&amp;#8217;s performance. Because the Portfolio has less than a full fiscal year of investment operations, no portfolio turnover rate is provided for the Portfolio at this time.</rr:PortfolioTurnoverTextBlock>
  <rr:BarChartHeading contextRef="Duration_01May2012_30Apr2013S000010995_MemberClassF_Member">&lt;b&gt;Calendar Year Total Returns&lt;/b&gt;</rr:BarChartHeading>
  <rr:ExpenseExampleHeading contextRef="Duration_01May2012_30Apr2013S000040491_Member">&lt;b&gt;Example&lt;/b&gt;</rr:ExpenseExampleHeading>
  <rr:MaximumSalesChargeImposedOnPurchasesOverOfferingPrice decimals="4" contextRef="Duration_01May2012_30Apr2013S000010996_MemberC000055530_MemberClassF_Member" unitRef="pure">0</rr:MaximumSalesChargeImposedOnPurchasesOverOfferingPrice>
  <rr:PortfolioTurnoverHeading contextRef="Duration_01May2012_30Apr2013S000040491_Member">&lt;b&gt;Portfolio Turnover &lt;/b&gt;</rr:PortfolioTurnoverHeading>
  <rr:MaximumDeferredSalesChargeOverOfferingPrice decimals="4" contextRef="Duration_01May2012_30Apr2013S000010996_MemberC000055530_MemberClassF_Member" unitRef="pure">0</rr:MaximumDeferredSalesChargeOverOfferingPrice>
  <rr:PortfolioTurnoverTextBlock contextRef="Duration_01May2012_30Apr2013S000040491_Member">The Portfolio pays transaction costs, such as commissions, when it buys and sells securities (&amp;#8220;turns over&amp;#8221; its portfolio). A higher portfolio turnover rate may indicate higher transaction costs. These costs, which are not reflected in annual fund operating expenses or in the &amp;#8220;Example&amp;#8221;, affect the Portfolio&amp;#8217;s performance. Because the Portfolio has less than a full fiscal year of investment operations, no portfolio turnover rate is provided for the Portfolio at this time.</rr:PortfolioTurnoverTextBlock>
  <rr:PerformanceTableHeading contextRef="Duration_01May2012_30Apr2013S000010995_MemberClassF_Member">&lt;b&gt;Average Annual Total Returns&lt;br/&gt;(as of 12/31/12)</rr:PerformanceTableHeading>
  <rr:StrategyHeading contextRef="Duration_01May2012_30Apr2013S000040492_Member">&lt;b&gt;INVESTMENTS, RISKS AND PERFORMANCE &lt;br/&gt;&lt;br/&gt;Principal Investment Strategies&lt;/b&gt;</rr:StrategyHeading>
  <rr:StrategyHeading contextRef="Duration_01May2012_30Apr2013S000040491_Member">&lt;b&gt;INVESTMENTS, RISKS AND PERFORMANCE&lt;/b&gt;&lt;br/&gt;&lt;br/&gt;&lt;b&gt;Principal Investment Strategies&lt;/b&gt;</rr:StrategyHeading>
  <rr:RiskHeading contextRef="Duration_01May2012_30Apr2013S000040491_Member">&lt;b&gt;Principal Risks&lt;/b&gt;</rr:RiskHeading>
  <rr:BarChartAndPerformanceTableHeading contextRef="Duration_01May2012_30Apr2013S000040491_Member">&lt;b&gt;Performance&lt;/b&gt;</rr:BarChartAndPerformanceTableHeading>
  <rr:ManagementFeesOverAssets decimals="4" contextRef="Duration_01May2012_30Apr2013S000010996_MemberC000055530_MemberClassF_Member" unitRef="pure">0.0066</rr:ManagementFeesOverAssets>
  <rr:DistributionAndService12b1FeesOverAssets decimals="4" contextRef="Duration_01May2012_30Apr2013S000010996_MemberC000055530_MemberClassF_Member" unitRef="pure">0.002</rr:DistributionAndService12b1FeesOverAssets>
  <rr:StrategyNarrativeTextBlock contextRef="Duration_01May2012_30Apr2013S000010992_MemberClassF_Member">The Portfolio seeks to substantially replicate the total return of the securities comprising the S&amp;amp;P MidCap 400 Index, taking into consideration redemptions, sales of additional shares, and other adjustments described below. The S&amp;amp;P MidCap 400 Index is an unmanaged index of common stocks comprised of 400 common stocks of mid-sized U.S. companies that aims to include 7% of the value of the domestic equity markets. As of December 31, 2012, the market capitalization of the S&amp;amp;P MidCap 400 Index companies ranged from $403.7 million to $16.6 billion with a weighted median level of $3.7 billion and a weighted average level of $4.2 billion. The S&amp;amp;P MidCap 400 Index is capitalization-weighted, meaning that companies with larger market capitalizations will contribute more to the Index's value than companies with smaller market capitalizations.&lt;br/&gt;&lt;br/&gt;The Portfolio will invest primarily in common stocks of the companies that comprise the S&amp;amp;P MidCap 400 Index. The Portfolio may also invest in Standard &amp;amp; Poor's MidCap Depositary Receipts&lt;sup&gt;&amp;#174;&lt;/sup&gt; ("MidCap SPDRs&lt;sup&gt;&amp;#174;&lt;/sup&gt;") or other investment companies that provide exposure to the S&amp;amp;P MidCap 400 Index. MidCap SPDRs&lt;sup&gt;&amp;#174;&lt;/sup&gt; are units of beneficial interest in a unit investment trust, representing proportionate undivided interests in a portfolio of securities in substantially the same weighting as the common stocks that comprise the S&amp;amp;P MidCap 400 Index. Derivatives, such as options, futures, and options on futures, may also be held by the Portfolio incidental to its main investment strategy.&lt;br/&gt;&lt;br/&gt;Under normal circumstances, the Portfolio will invest at least 80% of its net assets in investments with economic characteristics similar to midcap stocks as represented in the S&amp;amp;P MidCap 400 Index. The Portfolio will provide shareholders with at least 60 days' notice before changing this 80% policy. While not required, the Portfolio will generally sell securities that the Index manager removes from the Index. Although the Subadvisor will attempt to invest and maintain as much of the Portfolio's assets as is practical in stocks included among the S&amp;amp;P MidCap 400 Index and futures contracts and options relating thereto under normal market conditions, a portion of the Portfolio may be invested in money market instruments pending investment or to meet redemption requests or other needs for liquid assets.</rr:StrategyNarrativeTextBlock>
  <rr:OtherExpensesOverAssets decimals="4" contextRef="Duration_01May2012_30Apr2013S000010996_MemberC000055530_MemberClassF_Member" unitRef="pure">0.0039</rr:OtherExpensesOverAssets>
  <rr:ExpensesOverAssets decimals="4" contextRef="Duration_01May2012_30Apr2013S000010996_MemberC000055530_MemberClassF_Member" unitRef="pure">0.0125</rr:ExpensesOverAssets>
  <rr:RiskHeading contextRef="Duration_01May2012_30Apr2013S000010992_MemberClassF_Member">&lt;b&gt;Principal Risks&lt;/b&gt;</rr:RiskHeading>
  <rr:FeeWaiverOrReimbursementOverAssets id="Item_6" decimals="4" contextRef="Duration_01May2012_30Apr2013S000010996_MemberC000055530_MemberClassF_Member" unitRef="pure">-0.0006</rr:FeeWaiverOrReimbursementOverAssets>
  <rr:PerformanceNarrativeTextBlock contextRef="Duration_01May2012_30Apr2013S000040491_Member">Because the Portfolio has less than one full calendar year of investment operations, no performance information is presented for the Portfolio at this time.</rr:PerformanceNarrativeTextBlock>
  <rr:NetExpensesOverAssets decimals="4" contextRef="Duration_01May2012_30Apr2013S000010996_MemberC000055530_MemberClassF_Member" unitRef="pure">0.0119</rr:NetExpensesOverAssets>
  <rr:FeeWaiverOrReimbursementOverAssetsDateOfTermination contextRef="Duration_01May2012_30Apr2013S000010995_MemberClassF_Member">April 30, 2014</rr:FeeWaiverOrReimbursementOverAssetsDateOfTermination>
  <rr:PortfolioTurnoverRate decimals="4" contextRef="Duration_01May2012_30Apr2013S000010995_MemberClassF_Member" unitRef="pure">0.13</rr:PortfolioTurnoverRate>
  <rr:RiskLoseMoney contextRef="Duration_01May2012_30Apr2013S000010995_MemberClassF_Member">You could lose money on your investment in the Portfolio, or the Portfolio could underperform, because of the risks described below.</rr:RiskLoseMoney>
  <rr:RiskNotInsuredDepositoryInstitution contextRef="Duration_01May2012_30Apr2013S000010995_MemberClassF_Member">An investment in the Portfolio is not a bank deposit and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.</rr:RiskNotInsuredDepositoryInstitution>
  <rr:PerformanceInformationIllustratesVariabilityOfReturns contextRef="Duration_01May2012_30Apr2013S000010995_MemberClassF_Member">The following bar chart and table show the Portfolio&amp;#8217;s annual returns and its long-term performance, which give some indication of the risks of investing in the Portfolio. The bar chart shows how the performance has varied from year to year. The table compares the Portfolio&amp;#8217;s performance over time with that of a benchmark index and a peer average.</rr:PerformanceInformationIllustratesVariabilityOfReturns>
  <rr:PerformanceAvailabilityWebSiteAddress contextRef="Duration_01May2012_30Apr2013S000010995_MemberClassF_Member">www.calvert.com</rr:PerformanceAvailabilityWebSiteAddress>
  <rr:PerformancePastDoesNotIndicateFuture contextRef="Duration_01May2012_30Apr2013S000010995_MemberClassF_Member">The Portfolio&amp;#8217;s past performance does not necessarily indicate how the Portfolio will perform in the future.</rr:PerformancePastDoesNotIndicateFuture>
  <rr:BarChartDoesNotReflectSalesLoads contextRef="Duration_01May2012_30Apr2013S000010995_MemberClassF_Member">The returns shown do not reflect fees and charges imposed under the variable annuity contracts and life insurance policies through which an investment may be made. If those fees and charges were included, they would reduce these returns.</rr:BarChartDoesNotReflectSalesLoads>
  <rr:HighestQuarterlyReturnLabel contextRef="Duration_01May2012_30Apr2013S000010995_MemberC000030372_MemberClassF_Member">Best Quarter (of periods shown)</rr:HighestQuarterlyReturnLabel>
  <rr:BarChartHighestQuarterlyReturnDate contextRef="Duration_01May2012_30Apr2013S000010995_MemberC000030372_MemberClassF_Member">2003-06-30</rr:BarChartHighestQuarterlyReturnDate>
  <rr:BarChartHighestQuarterlyReturn decimals="4" contextRef="Duration_01May2012_30Apr2013S000010995_MemberC000030372_MemberClassF_Member" unitRef="pure">0.2345</rr:BarChartHighestQuarterlyReturn>
  <rr:ExpenseExampleYear01 decimals="INF" contextRef="Duration_01May2012_30Apr2013S000010996_MemberC000055530_MemberClassF_Member" unitRef="USD">121</rr:ExpenseExampleYear01>
  <rr:LowestQuarterlyReturnLabel contextRef="Duration_01May2012_30Apr2013S000010995_MemberC000030372_MemberClassF_Member">Worst Quarter (of periods shown)</rr:LowestQuarterlyReturnLabel>
  <rr:ExpenseExampleYear03 decimals="INF" contextRef="Duration_01May2012_30Apr2013S000010996_MemberC000055530_MemberClassF_Member" unitRef="USD">391</rr:ExpenseExampleYear03>
  <rr:BarChartLowestQuarterlyReturnDate contextRef="Duration_01May2012_30Apr2013S000010995_MemberC000030372_MemberClassF_Member">2008-12-31</rr:BarChartLowestQuarterlyReturnDate>
  <rr:RiskNarrativeTextBlock contextRef="Duration_01May2012_30Apr2013S000010992_MemberClassF_Member">You could lose money on your investment in the Portfolio, or the Portfolio could underperform, because of the risks described below. An investment in the Portfolio is not a bank deposit and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.&lt;br/&gt;&lt;br/&gt; Management Risk. Individual investments of the Portfolio may not perform as expected, and the portfolio management practices may not achieve the desired result.&lt;br/&gt;&lt;br/&gt;Stock Market Risk. The market prices of stocks held by the Portfolio may fall.&lt;br/&gt;&lt;br/&gt;Index Tracking Risk. An index fund has operating expenses; a market index does not. The Portfolio, while expected to track its target index as closely as possible, will not be able to match the performance of the index exactly.&lt;br/&gt;&lt;br/&gt;Common Stock Risk. Although common stocks have a history of long-term growth in value, their prices fluctuate based on changes in a company's financial condition, on overall market and economic conditions, and on investors' perception of a company's well-being.&lt;br/&gt;&lt;br/&gt;Mid-Cap Company Risk. Prices of mid-cap stocks can be more volatile than those of larger, more established companies. Mid-cap companies are more likely to have more limited product lines, fewer capital resources and less depth of management than larger companies.&lt;br/&gt;&lt;br/&gt;Investments in Other Investment Companies. The risks of investing in other investment companies typically reflect the risks of the types of securities in which those investment companies invest. When the Portfolio invests in another investment company, shareholders of the Portfolio bear their proportionate share of the other investment company's fees and expenses as well as their share of the Portfolio's fees and expenses.&lt;br/&gt;&lt;br/&gt;Stock Index Futures and Options Risk. Using stock index futures and options may increase the Portfolio's volatility and may involve a small cash investment relative to the magnitude of risk assumed. If changes in a derivative's value do not correspond to changes in the value of the Portfolio's other investments, the Portfolio may not fully benefit from or could lose money on the derivative position. Derivatives can involve risk of loss if the party who issued the derivative defaults on its obligation. Derivatives may also be less liquid and more difficult to value.</rr:RiskNarrativeTextBlock>
  <rr:BarChartLowestQuarterlyReturn decimals="4" contextRef="Duration_01May2012_30Apr2013S000010995_MemberC000030372_MemberClassF_Member" unitRef="pure">-0.2621</rr:BarChartLowestQuarterlyReturn>
  <rr:ExpenseExampleYear05 decimals="INF" contextRef="Duration_01May2012_30Apr2013S000010996_MemberC000055530_MemberClassF_Member" unitRef="USD">681</rr:ExpenseExampleYear05>
  <rr:ExpenseExampleYear10 decimals="INF" contextRef="Duration_01May2012_30Apr2013S000010996_MemberC000055530_MemberClassF_Member" unitRef="USD">1506</rr:ExpenseExampleYear10>
  <rr:BarChartAndPerformanceTableHeading contextRef="Duration_01May2012_30Apr2013S000010992_MemberClassF_Member">&lt;b&gt;Performance&lt;/b&gt;</rr:BarChartAndPerformanceTableHeading>
  <rr:AnnualReturn2003 decimals="4" contextRef="Duration_01May2012_30Apr2013S000010996_MemberC000055530_MemberClassF_Member" unitRef="pure">0.3252</rr:AnnualReturn2003>
  <rr:AnnualReturn2004 decimals="4" contextRef="Duration_01May2012_30Apr2013S000010996_MemberC000055530_MemberClassF_Member" unitRef="pure">0.1777</rr:AnnualReturn2004>
  <rr:AnnualReturn2005 decimals="4" contextRef="Duration_01May2012_30Apr2013S000010996_MemberC000055530_MemberClassF_Member" unitRef="pure">0.1233</rr:AnnualReturn2005>
  <rr:PerformanceNarrativeTextBlock contextRef="Duration_01May2012_30Apr2013S000010992_MemberClassF_Member">The following bar chart and table show the Portfolio&amp;#8217;s annual returns and its long-term performance, which give some indication of the risks of investing in the Portfolio. The bar chart shows how the performance has varied from year to year. The table compares the Portfolio&amp;#8217;s performance over time with that of a benchmark index and a peer average.&lt;br/&gt;&lt;br/&gt;Investors should note that the performance presented in the bar chart and table below for periods prior to the inception date of the Class F shares on October 1, 2007 is that of the Portfolio's Class I shares, adjusted to account for the different expense characteristics of the Class F shares. Both classes of shares of the Portfolio will have substantially similar annual returns because all classes of shares of the Portfolio invest in the same pool of investments, although Class F shares&amp;#8217; performance will be lower than the performance of the Class I shares of the Portfolio because Class F shares have higher operating expenses due to the Class F shares&amp;#8217; Rule 12b-1 fees.&lt;br/&gt;&lt;br/&gt;The Portfolio&amp;#8217;s past performance does not necessarily indicate how the Portfolio will perform in the future. For updated performance information, visit www.calvert.com.&lt;br/&gt;&lt;br/&gt;The returns shown do not reflect fees and charges imposed under the variable annuity contracts and life insurance policies through which an investment may be made. If those fees and charges were included, they would reduce these returns.</rr:PerformanceNarrativeTextBlock>
  <rr:AnnualReturn2006 decimals="4" contextRef="Duration_01May2012_30Apr2013S000010996_MemberC000055530_MemberClassF_Member" unitRef="pure">0.2528</rr:AnnualReturn2006>
  <rr:AnnualReturn2007 decimals="4" contextRef="Duration_01May2012_30Apr2013S000010996_MemberC000055530_MemberClassF_Member" unitRef="pure">0.0988</rr:AnnualReturn2007>
  <rr:AnnualReturn2008 decimals="4" contextRef="Duration_01May2012_30Apr2013S000010996_MemberC000055530_MemberClassF_Member" unitRef="pure">-0.4283</rr:AnnualReturn2008>
  <rr:AnnualReturn2009 decimals="4" contextRef="Duration_01May2012_30Apr2013S000010996_MemberC000055530_MemberClassF_Member" unitRef="pure">0.2751</rr:AnnualReturn2009>
  <rr:AnnualReturn2010 decimals="4" contextRef="Duration_01May2012_30Apr2013S000010996_MemberC000055530_MemberClassF_Member" unitRef="pure">0.065</rr:AnnualReturn2010>
  <rr:BarChartHeading contextRef="Duration_01May2012_30Apr2013S000010992_MemberClassF_Member">&lt;b&gt;Calendar Year Total Returns&lt;/b&gt;</rr:BarChartHeading>
  <rr:AnnualReturn2011 decimals="4" contextRef="Duration_01May2012_30Apr2013S000010996_MemberC000055530_MemberClassF_Member" unitRef="pure">-0.129</rr:AnnualReturn2011>
  <rr:AnnualReturn2012 decimals="4" contextRef="Duration_01May2012_30Apr2013S000010996_MemberC000055530_MemberClassF_Member" unitRef="pure">0.1705</rr:AnnualReturn2012>
  <rr:MaximumSalesChargeImposedOnPurchasesOverOfferingPrice decimals="4" contextRef="Duration_01May2012_30Apr2013S000010995_MemberC000030372_MemberClassF_Member" unitRef="pure">0</rr:MaximumSalesChargeImposedOnPurchasesOverOfferingPrice>
  <rr:AverageAnnualReturnYear01 decimals="4" contextRef="Duration_01May2012_30Apr2013S000010996_MemberC000055530_MemberClassF_Member" unitRef="pure">0.1705</rr:AverageAnnualReturnYear01>
  <rr:AverageAnnualReturnYear01 decimals="4" contextRef="Duration_01May2012_30Apr2013S000010996_MemberClassF_MemberMsciTwentyHundredIndex_Member" unitRef="pure">0.179</rr:AverageAnnualReturnYear01>
  <rr:AverageAnnualReturnYear01 decimals="4" contextRef="Duration_01May2012_30Apr2013S000010996_MemberClassF_MemberLipperVaInternationalCoreFundsAverage_Member" unitRef="pure">0.1756</rr:AverageAnnualReturnYear01>
  <rr:AverageAnnualReturnYear05 decimals="4" contextRef="Duration_01May2012_30Apr2013S000010996_MemberC000055530_MemberClassF_Member" unitRef="pure">-0.0457</rr:AverageAnnualReturnYear05>
  <rr:AverageAnnualReturnYear05 decimals="4" contextRef="Duration_01May2012_30Apr2013S000010996_MemberClassF_MemberMsciTwentyHundredIndex_Member" unitRef="pure">-0.0321</rr:AverageAnnualReturnYear05>
  <rr:AverageAnnualReturnYear05 decimals="4" contextRef="Duration_01May2012_30Apr2013S000010996_MemberClassF_MemberLipperVaInternationalCoreFundsAverage_Member" unitRef="pure">-0.035</rr:AverageAnnualReturnYear05>
  <rr:AverageAnnualReturnYear10 decimals="4" contextRef="Duration_01May2012_30Apr2013S000010996_MemberC000055530_MemberClassF_Member" unitRef="pure">0.0669</rr:AverageAnnualReturnYear10>
  <rr:AverageAnnualReturnYear10 decimals="4" contextRef="Duration_01May2012_30Apr2013S000010996_MemberClassF_MemberMsciTwentyHundredIndex_Member" unitRef="pure">0.087</rr:AverageAnnualReturnYear10>
  <rr:AverageAnnualReturnYear10 decimals="4" contextRef="Duration_01May2012_30Apr2013S000010996_MemberClassF_MemberLipperVaInternationalCoreFundsAverage_Member" unitRef="pure">0.0775</rr:AverageAnnualReturnYear10>
  <rr:MaximumDeferredSalesChargeOverOfferingPrice decimals="4" contextRef="Duration_01May2012_30Apr2013S000010995_MemberC000030372_MemberClassF_Member" unitRef="pure">0</rr:MaximumDeferredSalesChargeOverOfferingPrice>
  <rr:ManagementFeesOverAssets decimals="4" contextRef="Duration_01May2012_30Apr2013S000010995_MemberC000030372_MemberClassF_Member" unitRef="pure">0.0045</rr:ManagementFeesOverAssets>
  <rr:DistributionAndService12b1FeesOverAssets decimals="4" contextRef="Duration_01May2012_30Apr2013S000010995_MemberC000030372_MemberClassF_Member" unitRef="pure">0.002</rr:DistributionAndService12b1FeesOverAssets>
  <rr:BarChartClosingTextBlock contextRef="Duration_01May2012_30Apr2013S000010992_MemberClassF_Member">&lt;div&gt;&lt;table border="0" cellspacing="0" style="; width: 6in;"&gt;&lt;tr valign="bottom"&gt;&lt;td align="right"&gt;&lt;/td&gt;&lt;td align="right"&gt;&lt;b&gt;Quarter&lt;/b&gt;&lt;/td&gt;&lt;td align="right"&gt;&lt;b&gt;Total&lt;/b&gt;&lt;/td&gt;&lt;td align="left"&gt;&amp;nbsp;&lt;/td&gt;&lt;/tr&gt;&lt;tr valign="bottom"&gt;&lt;td align="left"&gt;&amp;nbsp;&lt;/td&gt;&lt;td align="right" style="border-bottom-color: rgb(0, 0, 0); border-bottom-width: 1px; border-bottom-style: solid;"&gt;&lt;b&gt;Ended&lt;/b&gt;&lt;/td&gt;&lt;td align="right" style="border-bottom-color: rgb(0, 0, 0); border-bottom-width: 1px; border-bottom-style: solid; text-indent: 5.93pt;"&gt;&lt;b&gt;Return&lt;/b&gt;&lt;/td&gt;&lt;td align="left" style="border-bottom-color: rgb(0, 0, 0); border-bottom-width: 1px; border-bottom-style: solid;"&gt;&amp;nbsp;&lt;/td&gt;&lt;/tr&gt;&lt;tr valign="bottom"&gt;&lt;td align="left"&gt;Best Quarter (of periods shown)&lt;/td&gt;&lt;td align="right"&gt;9/30/09&lt;/td&gt;&lt;td align="right"&gt;19.73&lt;/td&gt;&lt;td align="left"&gt;%&lt;/td&gt;&lt;/tr&gt;&lt;tr valign="bottom"&gt;&lt;td align="left"&gt;Worst Quarter (of periods shown)&lt;/td&gt;&lt;td align="right"&gt;12/31/08&lt;/td&gt;&lt;td align="right"&gt;-25.97&lt;/td&gt;&lt;td align="left"&gt;%&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;&lt;/div&gt;</rr:BarChartClosingTextBlock>
  <rr:OtherExpensesOverAssets decimals="4" contextRef="Duration_01May2012_30Apr2013S000010995_MemberC000030372_MemberClassF_Member" unitRef="pure">0.0034</rr:OtherExpensesOverAssets>
  <rr:AcquiredFundFeesAndExpensesOverAssets decimals="4" contextRef="Duration_01May2012_30Apr2013S000010995_MemberC000030372_MemberClassF_Member" unitRef="pure">0.0001</rr:AcquiredFundFeesAndExpensesOverAssets>
  <rr:ExpensesOverAssets decimals="4" contextRef="Duration_01May2012_30Apr2013S000010995_MemberC000030372_MemberClassF_Member" unitRef="pure">0.01</rr:ExpensesOverAssets>
  <rr:FeeWaiverOrReimbursementOverAssets id="Item_7" decimals="4" contextRef="Duration_01May2012_30Apr2013S000010995_MemberC000030372_MemberClassF_Member" unitRef="pure">-0.0004</rr:FeeWaiverOrReimbursementOverAssets>
  <rr:NetExpensesOverAssets decimals="4" contextRef="Duration_01May2012_30Apr2013S000010995_MemberC000030372_MemberClassF_Member" unitRef="pure">0.0096</rr:NetExpensesOverAssets>
  <rr:PerformanceTableHeading contextRef="Duration_01May2012_30Apr2013S000010992_MemberClassF_Member">&lt;b&gt;Average Annual Total Returns&lt;br/&gt;(as of 12/31/12)</rr:PerformanceTableHeading>
  <rr:ObjectiveHeading contextRef="Duration_01May2012_30Apr2013S000040490_Member">&lt;b&gt;INVESTMENT OBJECTIVE&lt;/b&gt;</rr:ObjectiveHeading>
  <rr:ObjectivePrimaryTextBlock contextRef="Duration_01May2012_30Apr2013S000040490_Member">The Portfolio pursues growth potential and some current income, while seeking to manage overall portfolio volatility. This objective may be changed by the Portfolio&amp;#8217;s Board of Directors without shareholder approval.</rr:ObjectivePrimaryTextBlock>
  <rr:ExpenseHeading contextRef="Duration_01May2012_30Apr2013S000040490_Member">&lt;b&gt;FEES AND EXPENSES OF THE PORTFOLIO&lt;/b&gt;</rr:ExpenseHeading>
  <rr:ExpenseNarrativeTextBlock contextRef="Duration_01May2012_30Apr2013S000040490_Member">This table describes the fees and expenses that you may pay if you invest in shares of the Portfolio.&lt;br/&gt;&lt;br/&gt;The table and the following example do not reflect fees and charges imposed under the variable annuity contracts and life insurance policies (each a &amp;#8220;Policy&amp;#8221;) through which an investment may be made. If those fees and charges were included, costs would be higher. Please consult the prospectus for your Policy for information regarding those fees and charges.</rr:ExpenseNarrativeTextBlock>
  <rr:ShareholderFeesCaption contextRef="Duration_01May2012_30Apr2013S000040490_Member">&lt;b&gt;Shareholder Fees&lt;/b&gt; (fees paid directly from your investment)</rr:ShareholderFeesCaption>
  <rr:FeeWaiverOrReimbursementOverAssetsDateOfTermination contextRef="Duration_01May2012_30Apr2013S000010992_MemberClassF_Member">April 30, 2014</rr:FeeWaiverOrReimbursementOverAssetsDateOfTermination>
  <rr:ExpenseExampleYear01 decimals="INF" contextRef="Duration_01May2012_30Apr2013S000010995_MemberC000030372_MemberClassF_Member" unitRef="USD">98</rr:ExpenseExampleYear01>
  <rr:PortfolioTurnoverRate decimals="4" contextRef="Duration_01May2012_30Apr2013S000010992_MemberClassF_Member" unitRef="pure">0.1</rr:PortfolioTurnoverRate>
  <rr:ExpenseExampleYear03 decimals="INF" contextRef="Duration_01May2012_30Apr2013S000010995_MemberC000030372_MemberClassF_Member" unitRef="USD">314</rr:ExpenseExampleYear03>
  <rr:ExpenseExampleYear05 decimals="INF" contextRef="Duration_01May2012_30Apr2013S000010995_MemberC000030372_MemberClassF_Member" unitRef="USD">549</rr:ExpenseExampleYear05>
  <rr:RiskLoseMoney contextRef="Duration_01May2012_30Apr2013S000010992_MemberClassF_Member">You could lose money on your investment in the Portfolio, or the Portfolio could underperform, because of the risks described below.</rr:RiskLoseMoney>
  <rr:OperatingExpensesCaption contextRef="Duration_01May2012_30Apr2013S000040490_Member">&lt;b&gt;Annual Fund Operating Expenses&lt;/b&gt; (expenses that you pay each year as&lt;br/&gt;a % of the value of your investment)</rr:OperatingExpensesCaption>
  <rr:ExpenseExampleYear10 decimals="INF" contextRef="Duration_01May2012_30Apr2013S000010995_MemberC000030372_MemberClassF_Member" unitRef="USD">1221</rr:ExpenseExampleYear10>
  <rr:RiskNotInsuredDepositoryInstitution contextRef="Duration_01May2012_30Apr2013S000010992_MemberClassF_Member">An investment in the Portfolio is not a bank deposit and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.</rr:RiskNotInsuredDepositoryInstitution>
  <rr:PerformanceInformationIllustratesVariabilityOfReturns contextRef="Duration_01May2012_30Apr2013S000010992_MemberClassF_Member">The following bar chart and table show the Portfolio&amp;#8217;s annual returns and its long-term performance, which give some indication of the risks of investing in the Portfolio. The bar chart shows how the performance has varied from year to year. The table compares the Portfolio&amp;#8217;s performance over time with that of a benchmark index and a peer average.</rr:PerformanceInformationIllustratesVariabilityOfReturns>
  <rr:PerformanceAvailabilityWebSiteAddress contextRef="Duration_01May2012_30Apr2013S000010992_MemberClassF_Member">www.calvert.com</rr:PerformanceAvailabilityWebSiteAddress>
  <rr:PerformancePastDoesNotIndicateFuture contextRef="Duration_01May2012_30Apr2013S000010992_MemberClassF_Member">The Portfolio&amp;#8217;s past performance does not necessarily indicate how the Portfolio will perform in the future.</rr:PerformancePastDoesNotIndicateFuture>
  <rr:ExpenseExampleHeading contextRef="Duration_01May2012_30Apr2013S000040490_Member">&lt;b&gt;Example&lt;/b&gt;</rr:ExpenseExampleHeading>
  <rr:BarChartDoesNotReflectSalesLoads contextRef="Duration_01May2012_30Apr2013S000010992_MemberClassF_Member">The returns shown do not reflect fees and charges imposed under the variable annuity contracts and life insurance policies through which an investment may be made. If those fees and charges were included, they would reduce these returns.</rr:BarChartDoesNotReflectSalesLoads>
  <rr:AnnualReturn2003 decimals="4" contextRef="Duration_01May2012_30Apr2013S000010995_MemberC000030372_MemberClassF_Member" unitRef="pure">0.4593</rr:AnnualReturn2003>
  <rr:AnnualReturn2004 decimals="4" contextRef="Duration_01May2012_30Apr2013S000010995_MemberC000030372_MemberClassF_Member" unitRef="pure">0.1748</rr:AnnualReturn2004>
  <rr:AnnualReturn2005 decimals="4" contextRef="Duration_01May2012_30Apr2013S000010995_MemberC000030372_MemberClassF_Member" unitRef="pure">0.0383</rr:AnnualReturn2005>
  <rr:AnnualReturn2006 decimals="4" contextRef="Duration_01May2012_30Apr2013S000010995_MemberC000030372_MemberClassF_Member" unitRef="pure">0.1735</rr:AnnualReturn2006>
  <rr:AnnualReturn2007 decimals="4" contextRef="Duration_01May2012_30Apr2013S000010995_MemberC000030372_MemberClassF_Member" unitRef="pure">-0.024</rr:AnnualReturn2007>
  <rr:BarChartLowestQuarterlyReturn decimals="4" contextRef="Duration_01May2012_30Apr2013S000010992_MemberC000053062_MemberClassF_Member" unitRef="pure">-0.2597</rr:BarChartLowestQuarterlyReturn>
  <rr:AnnualReturn2008 decimals="4" contextRef="Duration_01May2012_30Apr2013S000010995_MemberC000030372_MemberClassF_Member" unitRef="pure">-0.3408</rr:AnnualReturn2008>
  <rr:BarChartLowestQuarterlyReturnDate contextRef="Duration_01May2012_30Apr2013S000010992_MemberC000053062_MemberClassF_Member">2008-12-31</rr:BarChartLowestQuarterlyReturnDate>
  <rr:AnnualReturn2009 decimals="4" contextRef="Duration_01May2012_30Apr2013S000010995_MemberC000030372_MemberClassF_Member" unitRef="pure">0.2597</rr:AnnualReturn2009>
  <rr:LowestQuarterlyReturnLabel contextRef="Duration_01May2012_30Apr2013S000010992_MemberC000053062_MemberClassF_Member">Worst Quarter (of periods shown)</rr:LowestQuarterlyReturnLabel>
  <rr:AnnualReturn2010 decimals="4" contextRef="Duration_01May2012_30Apr2013S000010995_MemberC000030372_MemberClassF_Member" unitRef="pure">0.2583</rr:AnnualReturn2010>
  <rr:BarChartHighestQuarterlyReturn decimals="4" contextRef="Duration_01May2012_30Apr2013S000010992_MemberC000053062_MemberClassF_Member" unitRef="pure">0.1973</rr:BarChartHighestQuarterlyReturn>
  <rr:AnnualReturn2011 decimals="4" contextRef="Duration_01May2012_30Apr2013S000010995_MemberC000030372_MemberClassF_Member" unitRef="pure">-0.0507</rr:AnnualReturn2011>
  <rr:BarChartHighestQuarterlyReturnDate contextRef="Duration_01May2012_30Apr2013S000010992_MemberC000053062_MemberClassF_Member">2009-09-30</rr:BarChartHighestQuarterlyReturnDate>
  <rr:AnnualReturn2012 decimals="4" contextRef="Duration_01May2012_30Apr2013S000010995_MemberC000030372_MemberClassF_Member" unitRef="pure">0.1523</rr:AnnualReturn2012>
  <rr:HighestQuarterlyReturnLabel contextRef="Duration_01May2012_30Apr2013S000010992_MemberC000053062_MemberClassF_Member">Best Quarter (of periods shown)</rr:HighestQuarterlyReturnLabel>
  <rr:FeeWaiverOrReimbursementOverAssetsDateOfTermination contextRef="Duration_01May2012_30Apr2013S000010996_MemberClassF_Member">April 30, 2014</rr:FeeWaiverOrReimbursementOverAssetsDateOfTermination>
  <rr:PortfolioTurnoverRate decimals="4" contextRef="Duration_01May2012_30Apr2013S000010996_MemberClassF_Member" unitRef="pure">0.16</rr:PortfolioTurnoverRate>
  <rr:AverageAnnualReturnYear01 decimals="4" contextRef="Duration_01May2012_30Apr2013S000010995_MemberC000030372_MemberClassF_Member" unitRef="pure">0.1523</rr:AverageAnnualReturnYear01>
  <rr:AverageAnnualReturnYear01 decimals="4" contextRef="Duration_01May2012_30Apr2013S000010995_MemberClassF_MemberRussellTwentyHundredIndex_Member" unitRef="pure">0.1635</rr:AverageAnnualReturnYear01>
  <rr:AverageAnnualReturnYear01 decimals="4" contextRef="Duration_01May2012_30Apr2013S000010995_MemberClassF_MemberLipperVaSmallCapCoreFundsAverage_Member" unitRef="pure">0.1568</rr:AverageAnnualReturnYear01>
  <rr:RiskLoseMoney contextRef="Duration_01May2012_30Apr2013S000010996_MemberClassF_Member">You could lose money on your investment in the Portfolio, or the Portfolio could underperform, because of the risks described below.</rr:RiskLoseMoney>
  <rr:AverageAnnualReturnYear05 decimals="4" contextRef="Duration_01May2012_30Apr2013S000010995_MemberC000030372_MemberClassF_Member" unitRef="pure">0.0271</rr:AverageAnnualReturnYear05>
  <rr:AverageAnnualReturnYear05 decimals="4" contextRef="Duration_01May2012_30Apr2013S000010995_MemberClassF_MemberRussellTwentyHundredIndex_Member" unitRef="pure">0.0356</rr:AverageAnnualReturnYear05>
  <rr:AverageAnnualReturnYear05 decimals="4" contextRef="Duration_01May2012_30Apr2013S000010995_MemberClassF_MemberLipperVaSmallCapCoreFundsAverage_Member" unitRef="pure">0.0341</rr:AverageAnnualReturnYear05>
  <rr:AverageAnnualReturnYear10 decimals="4" contextRef="Duration_01May2012_30Apr2013S000010995_MemberC000030372_MemberClassF_Member" unitRef="pure">0.0883</rr:AverageAnnualReturnYear10>
  <rr:AverageAnnualReturnYear10 decimals="4" contextRef="Duration_01May2012_30Apr2013S000010995_MemberClassF_MemberRussellTwentyHundredIndex_Member" unitRef="pure">0.0972</rr:AverageAnnualReturnYear10>
  <rr:AverageAnnualReturnYear10 decimals="4" contextRef="Duration_01May2012_30Apr2013S000010995_MemberClassF_MemberLipperVaSmallCapCoreFundsAverage_Member" unitRef="pure">0.0903</rr:AverageAnnualReturnYear10>
  <rr:RiskNotInsuredDepositoryInstitution contextRef="Duration_01May2012_30Apr2013S000010996_MemberClassF_Member">An investment in the Portfolio is not a bank deposit and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.</rr:RiskNotInsuredDepositoryInstitution>
  <rr:PerformanceInformationIllustratesVariabilityOfReturns contextRef="Duration_01May2012_30Apr2013S000010996_MemberClassF_Member">The following bar chart and table show the Portfolio&amp;#8217;s annual returns and its long-term performance, which give some indication of the risks of investing in the Portfolio. The bar chart shows how the performance has varied from year to year. The table compares the Portfolio&amp;#8217;s performance over time with that of a benchmark index and a peer average.</rr:PerformanceInformationIllustratesVariabilityOfReturns>
  <rr:PerformanceAvailabilityWebSiteAddress contextRef="Duration_01May2012_30Apr2013S000010996_MemberClassF_Member">www.calvert.com</rr:PerformanceAvailabilityWebSiteAddress>
  <rr:RiskNarrativeTextBlock contextRef="Duration_01May2012_30Apr2013S000040491_Member">Asset Allocation Risk. The Subadvisor's selection of ETFs and the allocation of Portfolio assets to those ETFs may cause the Portfolio to underperform.&lt;br/&gt;&lt;br/&gt;Management Risk. Individual investments of an ETF may not perform as expected, and the ETF's portfolio management practices may not achieve the desired result. In addition, the volatility management strategy may not achieve its desired results.&lt;br/&gt;&lt;br/&gt;Exchange-Traded Fund (ETF) Risk. An ETF seeks to track the performance of an index by holding in its portfolio shares of all the companies, or a representative sample of the companies, that are components of a particular index. The risks of investment in ETFs typically reflect the risk of the types of securities in which the ETFs invest. In addition, when the Fund invests in an ETF, shareholders of the Fund bear their proportionate share of the ETF's fees and expenses as well as their share of the Fund's fees and expenses.&lt;br/&gt;&lt;br/&gt;Active Trading Strategy Risk. The Fund employs an active style that seeks to position the Portfolio with ETFs and derivatives that offer the greatest price appreciation while minimizing risk. This style can result in higher turnover (exceeding 100%) and may translate to higher transaction costs.&lt;br/&gt;&lt;br/&gt;&lt;b&gt;Equity Investments. &lt;/b&gt;The Portfolio shares the principal risks of the equity securities held by the underlying ETFs, including the key risks below.&lt;br/&gt;&lt;br/&gt;Stock Market Risk. The market prices of stocks held by the underlying ETFs may fall.&lt;br/&gt;&lt;br/&gt;Common Stock Risk. Although common stocks have a history of long-term growth in value, their prices fluctuate based on changes in a company's financial condition, on overall market and economic conditions, and on investors' perception of a company's well-being.&lt;br/&gt;&lt;br/&gt;Foreign Securities Risk. Investing in foreign securities involves additional risks relating to political, social, and economic developments abroad. Other risks result from differences between regulations that apply to U.S. and foreign issuers and markets, and the potential for foreign markets to be less liquid and more volatile than U.S. markets.&lt;br/&gt;&lt;br/&gt;Foreign securities include ADRs and GDRs. Unsponsored ADRs involve additional risks because U.S. reporting requirements do not apply and the issuing bank will recover shareholder distribution costs from movement of share prices and payment of dividends.&lt;br/&gt;&lt;br/&gt;Emerging Markets Risk. The risks of investing in emerging market securities are greater than those of investing in securities of developed foreign countries. These risks include volatile currency exchange rates, periods of high inflation, increased risk of default, greater social, economic and political uncertainty and instability, less governmental supervision and regulation of securities markets, weaker auditing and financial reporting standards, lack of liquidity in the markets, and the significantly smaller market capitalizations of emerging market issuers.&lt;br/&gt;&lt;br/&gt;Market Capitalization Risk. Large-cap companies may be unable to respond quickly to new competitive challenges such as changes in technology, and also may not be able to attain the high growth rate of successful smaller companies, especially during extended periods of economic expansion. Prices of small-cap and mid-cap stocks can be more volatile than those of larger, more established companies. Small-cap and mid-cap companies are more likely to have more limited product lines, fewer capital resources and less depth of management than larger companies. Prices of micro-cap securities are generally even more volatile and their markets are even less liquid relative to small-cap, mid-cap and large-cap securities.&lt;br/&gt;&lt;br/&gt;Natural Resources Risk. Natural resources have a historically low correlation to financial assets such as stocks and bonds. Correspondingly, their prices respond differently to financial market and economic conditions, although both are driven by the basic forces of supply and demand. However, because stocks and bonds are traded publicly on a secondary market, prices can quickly reflect forecasted earnings and future cash flows. Conversely, many factors may contribute to how natural resources prices respond to market events including warehousing and delivery constraints, changes in supply and demand dynamics, and a potential lack of fungibility. Other factors affecting natural resources prices include weather, agricultural production, disease, pestilence, technological developments, changes in interest rates, and domestic and foreign political and economic events and policies, including trade, fiscal, monetary and currency exchange policies. In addition, markets for commodities are likely to be volatile and there may be sharp price fluctuations even during periods when prices overall are rising.&lt;br/&gt;&lt;br/&gt;Real Estate Investing Risk. Investing in REITs exposes investors to the risks of owning real estate directly, as well as to risks that relate specifically to the way in which REITs are organized and operated. Real estate is a cyclical business, highly sensitive to general and local economic developments and characterized by intense competition and periodic overbuilding. Real estate income and values also may be greatly affected by demographic trends, such as population shifts or changing tastes and values. Government actions, such as tax increases, zoning law changes or environmental regulations, also may have a major impact on real estate. Changing interest rates and credit quality requirements also will affect the cash flow of real estate companies and their ability to meet capital needs. REITs generally invest directly in real estate (equity REITs), in mortgages secured by interests in real estate (mortgage REITs) or in some combination of the two (hybrid REITs). Operating REITs requires specialized management skills. Individual REITs may own a limited number of properties and may concentrate in a particular region or property type. REITs also must satisfy specific Internal Revenue Code requirements in order to qualify for the tax-free pass through of income and net realized gains.&lt;br/&gt;&lt;br/&gt;&lt;b&gt;Fixed-Income Investments. &lt;/b&gt;The Portfolio shares the principal risks of fixed-income securities held by the underlying ETFs, including the key risks below.&lt;br/&gt;&lt;br/&gt;Bond Market Risk. The market prices of bonds held by the underlying ETFs may fall.&lt;br/&gt;&lt;br/&gt;Credit Risk. The credit quality of fixed-income securities may deteriorate, which could lead to default or bankruptcy of the issuer where the issuer becomes unable to pay its obligations when due.&lt;br/&gt;&lt;br/&gt;Interest Rate Risk. A change in interest rates may adversely affect the value of the securities. When interest rates rise, the value of fixed-income securities will generally fall. Longer-term securities are subject to greater interest rate risk.&lt;br/&gt;&lt;br/&gt;Junk Bond Risk. Investments in junk bonds can involve a substantial risk of loss. Junk bonds are considered to be speculative with respect to the issuer's ability to pay interest and principal. These securities, which are rated below investment grade, have a higher risk of issuer default, are subject to greater price volatility than investment grade securities and may be illiquid.&lt;br/&gt;&lt;br/&gt;Mortgage-Backed and Asset-Backed Securities Risk. The value of investments in mortgage-backed and asset-backed securities is subject to interest rate risk and credit risk. These securities are also subject to the risk that borrowers will prepay the principal on their loans more quickly than expected (prepayment risk) or more slowly than expected (extension risk), which will affect the yield, average life and price of the securities. In addition, faster-than-expected prepayments may cause the Portfolio to invest the prepaid principal in lower yielding securities, and slower-than-expected prepayments may reduce the potential for the Portfolio to invest in higher yielding securities.&lt;br/&gt;&lt;br/&gt;Mortgage-Backed Security Risk (Government-Sponsored Enterprises). Debt and mortgage-backed securities issued by government-sponsored enterprises ("GSEs") such as the Federal National Mortgage Association ("FNMA") and the Federal Home Loan Mortgage Corporation ("FHLMC") are neither insured nor guaranteed by the U.S. Treasury and are not backed by the full faith and credit of the U.S. government. Such securities are only supported by the credit of the GSE. The U.S. government has provided financial support to FNMA and FHLMC, but there can be no assurance that it will support these or other GSEs in the future.&lt;br/&gt;&lt;br/&gt;&lt;b&gt;Money Market Investments. &lt;/b&gt;The Portfolio shares the principal risks of money market securities held by the underlying ETFs, including the key risk below.&lt;br/&gt;&lt;br/&gt;Money Market Risk. Yield will change in response to market interest rates; in general, as market rates go up, so will yield, and vice versa. Credit quality of the securities may deteriorate, which could lead to default or bankruptcy of the issuer where the issuer becomes unable to pay its obligations when due.&lt;br/&gt;&lt;br/&gt;&lt;b&gt;Volatility Management. &lt;/b&gt;The Portfolio shares the principal risks associated with its volatility management strategy, including the key risks below.&lt;br/&gt;&lt;br/&gt;Derivatives Risk. In general, a derivative is a financial contract whose value is based on the value of a financial asset (such as a stock, bond, or currency), a physical asset (such as gold), or a market index (such as the S&amp;#38;P 500 Index). Derivative instruments are subject to a number of risks, including the risk of changes in the market price of the underlying asset, credit risk with respect to the counterparty, and liquidity risk. The Portfolio's use of certain derivatives may also have a leveraging effect, which may increase the volatility of the Portfolio and reduce its returns.&lt;br/&gt;&lt;br/&gt;Futures Risk. Using futures may increase the Portfolio's volatility and may involve a small cash investment relative to the magnitude of risk assumed. If changes in a future's value do not correspond to changes in the value of the Portfolio's other investments, the Portfolio may not fully benefit from or could lose money on the futures position. Futures can involve risk of loss if the party who issued the future defaults on its obligation. Futures may also be less liquid and more difficult to value.&lt;br/&gt;&lt;br/&gt;Model Risk. The volatility management models may not accurately represent risk and projected performance, in which case performance may deviate from expectations. For example, market environments during which the stock market trends generally higher often experience low volatility, but the Portfolio may underperform in those market environments if the volatility management models forecast higher volatility. Conversely, market environments during which the stock market experiences sudden and sharp declines often experience high volatility, but the Portfolio may underperform in those market environments if the models forecast lower volatility.&lt;br/&gt;&lt;br/&gt;Basis Risk. There may be deviations between the derivatives used in the volatility management strategy and the elements of risk those derivatives are meant to manage, introducing basis risk. For example, a portion of the annualized return volatility that the Portfolio will experience will arise from the Portfolio's holdings of ETFs that invest in fixed-income securities, however, Milliman intends to use stock index futures contracts to implement the volatility management strategy. Accordingly, the volatility management strategy may not achieve its objective during periods when the fixed-income markets are unusually volatile.&lt;br/&gt;&lt;br/&gt;Gap Risk. Large discontinuous jumps in the market may cause the volatility management strategy to underperform.&lt;br/&gt;&lt;br/&gt;Credit Risk. The hedging strategies employed in the volatility management strategy can introduce counterparty credit risk, even though efforts are made to mitigate this risk through the use of collateral and clearing mechanisms.&lt;br/&gt;&lt;br/&gt;Leverage Risk. The volatility management strategy employs leverage to utilize capital efficiently. While losses should in no circumstance exceed the value of the hedged position, they may be large relative to the amount of capital employed.</rr:RiskNarrativeTextBlock>
  <rr:MaximumSalesChargeImposedOnPurchasesOverOfferingPrice decimals="4" contextRef="Duration_01May2012_30Apr2013S000010992_MemberC000053062_MemberClassF_Member" unitRef="pure">0</rr:MaximumSalesChargeImposedOnPurchasesOverOfferingPrice>
  <rr:MaximumDeferredSalesChargeOverOfferingPrice decimals="4" contextRef="Duration_01May2012_30Apr2013S000010992_MemberC000053062_MemberClassF_Member" unitRef="pure">0</rr:MaximumDeferredSalesChargeOverOfferingPrice>
  <rr:PerformancePastDoesNotIndicateFuture contextRef="Duration_01May2012_30Apr2013S000010996_MemberClassF_Member">The Portfolio&amp;#8217;s past performance does not necessarily indicate how the Portfolio will perform in the future.</rr:PerformancePastDoesNotIndicateFuture>
  <rr:BarChartDoesNotReflectSalesLoads contextRef="Duration_01May2012_30Apr2013S000010996_MemberClassF_Member">The returns shown do not reflect fees and charges imposed under the variable annuity contracts and life insurance policies through which an investment may be made. If those fees and charges were included, they would reduce these returns.</rr:BarChartDoesNotReflectSalesLoads>
  <rr:HighestQuarterlyReturnLabel contextRef="Duration_01May2012_30Apr2013S000010996_MemberC000055530_MemberClassF_Member">Best Quarter (of periods shown)</rr:HighestQuarterlyReturnLabel>
  <rr:BarChartHighestQuarterlyReturnDate contextRef="Duration_01May2012_30Apr2013S000010996_MemberC000055530_MemberClassF_Member">2009-06-30</rr:BarChartHighestQuarterlyReturnDate>
  <rr:BarChartHighestQuarterlyReturn decimals="4" contextRef="Duration_01May2012_30Apr2013S000010996_MemberC000055530_MemberClassF_Member" unitRef="pure">0.2455</rr:BarChartHighestQuarterlyReturn>
  <rr:LowestQuarterlyReturnLabel contextRef="Duration_01May2012_30Apr2013S000010996_MemberC000055530_MemberClassF_Member">Worst Quarter (of periods shown)</rr:LowestQuarterlyReturnLabel>
  <rr:BarChartLowestQuarterlyReturnDate contextRef="Duration_01May2012_30Apr2013S000010996_MemberC000055530_MemberClassF_Member">2011-09-30</rr:BarChartLowestQuarterlyReturnDate>
  <rr:BarChartLowestQuarterlyReturn decimals="4" contextRef="Duration_01May2012_30Apr2013S000010996_MemberC000055530_MemberClassF_Member" unitRef="pure">-0.2018</rr:BarChartLowestQuarterlyReturn>
  <rr:ManagementFeesOverAssets decimals="4" contextRef="Duration_01May2012_30Apr2013S000010992_MemberC000053062_MemberClassF_Member" unitRef="pure">0.004</rr:ManagementFeesOverAssets>
  <rr:DistributionAndService12b1FeesOverAssets decimals="4" contextRef="Duration_01May2012_30Apr2013S000010992_MemberC000053062_MemberClassF_Member" unitRef="pure">0.002</rr:DistributionAndService12b1FeesOverAssets>
  <rr:OtherExpensesOverAssets decimals="4" contextRef="Duration_01May2012_30Apr2013S000010992_MemberC000053062_MemberClassF_Member" unitRef="pure">0.0026</rr:OtherExpensesOverAssets>
  <rr:ExpenseExampleNarrativeTextBlock contextRef="Duration_01May2012_30Apr2013S000040490_Member">This example is intended to help you compare the cost of investing in the Portfolio with the cost of investing in other mutual funds. The example assumes that:&lt;ul type="square"&gt;&lt;li style="margin-left:-20px"&gt;you invest $10,000 in the Portfolio for the time periods indicated;&lt;/li&gt;&lt;li style="margin-left:-20px"&gt;your investment has a 5% return each year;&lt;/li&gt;&lt;li style="margin-left:-20px"&gt;the Portfolio&amp;#8217;s operating expenses remain the same; and&lt;/li&gt;&lt;li style="margin-left:-20px"&gt;any Calvert expense limitation is in effect for the period indicated in the fee table above.&lt;/li&gt;&lt;/ul&gt;Although your actual costs may be higher or lower, under these assumptions your costs would be:</rr:ExpenseExampleNarrativeTextBlock>
  <rr:FeeWaiverOrReimbursementOverAssets id="Item_8" decimals="4" contextRef="Duration_01May2012_30Apr2013S000010992_MemberC000053062_MemberClassF_Member" unitRef="pure">-0.0005</rr:FeeWaiverOrReimbursementOverAssets>
  <rr:NetExpensesOverAssets decimals="4" contextRef="Duration_01May2012_30Apr2013S000010992_MemberC000053062_MemberClassF_Member" unitRef="pure">0.0081</rr:NetExpensesOverAssets>
  <rr:PortfolioTurnoverHeading contextRef="Duration_01May2012_30Apr2013S000040490_Member">&lt;b&gt;Portfolio Turnover&lt;/b&gt;</rr:PortfolioTurnoverHeading>
  <rr:PortfolioTurnoverTextBlock contextRef="Duration_01May2012_30Apr2013S000040490_Member">The Portfolio pays transaction costs, such as commissions, when it buys and sells securities (&amp;#8220;turns over&amp;#8221; its portfolio). A higher portfolio turnover rate may indicate higher transaction costs. These costs, which are not reflected in annual fund operating expenses or in the &amp;#8220;Example&amp;#8221;, affect the Portfolio&amp;#8217;s performance. Because the Portfolio has less than a full fiscal year of investment operations, no portfolio turnover rate is provided for the Portfolio at this time.</rr:PortfolioTurnoverTextBlock>
  <rr:ExpensesOverAssets decimals="4" contextRef="Duration_01May2012_30Apr2013S000010992_MemberC000053062_MemberClassF_Member" unitRef="pure">0.0086</rr:ExpensesOverAssets>
  <rr:ShareholderFeesTableTextBlock contextRef="Duration_01May2012_30Apr2013S000010995_MemberClassF_Member">&lt;div style="display:none"&gt;~ http://www.calvert.com/role/ScheduleShareholderFeesCalvertVPRussell2000SmallCapIndexPortfolioClassF column period compact * ~&lt;/div&gt;</rr:ShareholderFeesTableTextBlock>
  <rr:ExpenseExampleNarrativeTextBlock contextRef="Duration_01May2012_30Apr2013S000010996_MemberClassF_Member">This example is intended to help you compare the cost of investing in the Portfolio with the cost of investing in other mutual funds. The example assumes that:&lt;ul type="square"&gt;&lt;li style="margin-left:-20px"&gt;you invest $10,000 in the Portfolio for the time periods indicated;&lt;/li&gt;&lt;li style="margin-left:-20px"&gt;your investment has a 5% return each year;&lt;/li&gt;&lt;li style="margin-left:-20px"&gt;the Portfolio&amp;#8217;s operating expenses remain the same; and&lt;/li&gt;&lt;li style="margin-left:-20px"&gt;any Calvert expense limitation is in effect for the period indicated in the fee table above.&lt;/li&gt;&lt;/ul&gt;Although your actual costs may be higher or lower, under these assumptions your costs would be:</rr:ExpenseExampleNarrativeTextBlock>
  <rr:StrategyHeading contextRef="Duration_01May2012_30Apr2013S000040490_Member">&lt;b&gt;INVESTMENTS, RISKS AND PERFORMANCE&lt;/b&gt;&lt;br/&gt;&lt;br/&gt;&lt;b&gt;Principal Investment Strategies&lt;/b&gt;</rr:StrategyHeading>
  <rr:ExpenseExampleNarrativeTextBlock contextRef="Duration_01May2012_30Apr2013S000040491_Member">This example is intended to help you compare the cost of investing in the Portfolio with the cost of investing in other mutual funds. The example assumes that:&lt;ul type="square"&gt;&lt;li style="margin-left:-20px"&gt;you invest $10,000 in the Portfolio for the time periods indicated;&lt;/li&gt;&lt;li style="margin-left:-20px"&gt;your investment has a 5% return each year;&lt;/li&gt;&lt;li style="margin-left:-20px"&gt;the Portfolio&amp;#8217;s operating expenses remain the same; and&lt;/li&gt;&lt;li style="margin-left:-20px"&gt;any Calvert expense limitation is in effect for the period indicated in the fee table above.&lt;/li&gt;&lt;/ul&gt;Although your actual costs may be higher or lower, under these assumptions your costs would be:</rr:ExpenseExampleNarrativeTextBlock>
  <rr:BarChartClosingTextBlock contextRef="Duration_01May2012_30Apr2013S000010996_MemberClassF_Member">&lt;table style="width: 6in; " border="0" cellspacing="0"&gt; &lt;tr valign="bottom"&gt; &lt;td align="left"&gt;&lt;/td&gt; &lt;td align="right"&gt;&lt;b&gt;Quarter&lt;/b&gt;&lt;/td&gt; &lt;td align="right"&gt;&lt;b&gt;Total&lt;/b&gt;&lt;/td&gt; &lt;td align="left"&gt;&amp;nbsp;&lt;/td&gt;&lt;/tr&gt; &lt;tr valign="bottom"&gt; &lt;td align="left"&gt;&amp;nbsp;&lt;/td&gt; &lt;td style="BORDER-BOTTOM: #000000 1px solid; TEXT-INDENT: 2.834pt" align="right"&gt;&lt;b&gt;Ended&lt;/b&gt;&lt;/td&gt; &lt;td style="BORDER-BOTTOM: #000000 1px solid; TEXT-INDENT: 3.932pt" align="right"&gt;&lt;b&gt;Return&lt;/b&gt;&lt;/td&gt; &lt;td style="BORDER-BOTTOM: #000000 1px solid" align="left"&gt;&amp;nbsp;&lt;/td&gt;&lt;/tr&gt; &lt;tr&gt; &lt;td colspan="4"&gt;&amp;nbsp;&lt;/td&gt;&lt;/tr&gt; &lt;tr valign="bottom"&gt; &lt;td align="left"&gt;Best Quarter (of periods shown)&lt;/td&gt; &lt;td style="TEXT-INDENT: 4.283pt" align="right"&gt;6/30/09&lt;/td&gt; &lt;td align="right"&gt;24.55&lt;/td&gt; &lt;td align="left"&gt;%&lt;/td&gt;&lt;/tr&gt; &lt;tr valign="bottom"&gt; &lt;td align="left"&gt;Worst Quarter (of periods shown)&lt;/td&gt; &lt;td style="TEXT-INDENT: 4.283pt" align="right"&gt;9/30/11&lt;/td&gt; &lt;td align="right"&gt;-20.18&lt;/td&gt; &lt;td align="left"&gt;%&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;</rr:BarChartClosingTextBlock>
  <rr:RiskHeading contextRef="Duration_01May2012_30Apr2013S000040490_Member">&lt;b&gt;Principal Risks&lt;/b&gt;</rr:RiskHeading>
  <rr:ExpenseExampleNarrativeTextBlock contextRef="Duration_01May2012_30Apr2013S000010995_MemberClassF_Member">This example is intended to help you compare the cost of investing in the Portfolio with the cost of investing in other mutual funds. The example assumes that:&lt;ul type="square"&gt;&lt;li style="margin-left:-20px"&gt;you invest $10,000 in the Portfolio for the time periods indicated;&lt;/li&gt;&lt;li style="margin-left:-20px"&gt;your investment has a 5% return each year;&lt;/li&gt;&lt;li style="margin-left:-20px"&gt;the Portfolio&amp;#8217;s operating expenses remain the same; and&lt;/li&gt;&lt;li style="margin-left:-20px"&gt;any Calvert expense limitation is in effect for the period indicated in the fee table above.&lt;/li&gt;&lt;/ul&gt;Although your actual costs may be higher or lower, under these assumptions your costs would be:</rr:ExpenseExampleNarrativeTextBlock>
  <rr:AnnualFundOperatingExpensesTableTextBlock contextRef="Duration_01May2012_30Apr2013S000010995_MemberClassF_Member">&lt;div style="display:none"&gt;~ http://www.calvert.com/role/ScheduleAnnualFundOperatingExpensesCalvertVPRussell2000SmallCapIndexPortfolioClassF column period compact * ~&lt;/div&gt;</rr:AnnualFundOperatingExpensesTableTextBlock>
  <rr:ExpenseExampleWithRedemptionTableTextBlock contextRef="Duration_01May2012_30Apr2013S000010995_MemberClassF_Member">&lt;div style="display:none"&gt;~ http://www.calvert.com/role/ScheduleExpenseExampleTransposedCalvertVPRussell2000SmallCapIndexPortfolioClassF column period compact * ~&lt;/div&gt;</rr:ExpenseExampleWithRedemptionTableTextBlock>
  <rr:BarChartTableTextBlock contextRef="Duration_01May2012_30Apr2013S000010995_MemberClassF_Member">&lt;div style="display:none"&gt;~ http://www.calvert.com/role/ScheduleAnnualTotalReturnsCalvertVPRussell2000SmallCapIndexPortfolioClassFBarChart column period compact * ~&lt;/div&gt;</rr:BarChartTableTextBlock>
  <rr:ExpenseExampleYear01 decimals="INF" contextRef="Duration_01May2012_30Apr2013S000010992_MemberC000053062_MemberClassF_Member" unitRef="USD">83</rr:ExpenseExampleYear01>
  <rr:ExpenseExampleYear03 decimals="INF" contextRef="Duration_01May2012_30Apr2013S000010992_MemberC000053062_MemberClassF_Member" unitRef="USD">269</rr:ExpenseExampleYear03>
  <rr:ExpenseExampleYear05 decimals="INF" contextRef="Duration_01May2012_30Apr2013S000010992_MemberC000053062_MemberClassF_Member" unitRef="USD">472</rr:ExpenseExampleYear05>
  <rr:ExpenseExampleYear10 decimals="INF" contextRef="Duration_01May2012_30Apr2013S000010992_MemberC000053062_MemberClassF_Member" unitRef="USD">1056</rr:ExpenseExampleYear10>
  <rr:PerformanceTableTextBlock contextRef="Duration_01May2012_30Apr2013S000010995_MemberClassF_Member">&lt;div style="display:none"&gt;~ http://www.calvert.com/role/ScheduleAverageAnnualTotalReturnsTransposedCalvertVPRussell2000SmallCapIndexPortfolioClassF column period compact * ~&lt;/div&gt;</rr:PerformanceTableTextBlock>
  <rr:ExpenseExampleNoRedemptionYear01 decimals="INF" contextRef="Duration_01May2012_30Apr2013S000010992_MemberC000053062_MemberClassF_Member" unitRef="USD">83</rr:ExpenseExampleNoRedemptionYear01>
  <rr:ExpenseExampleNoRedemptionYear03 decimals="INF" contextRef="Duration_01May2012_30Apr2013S000010992_MemberC000053062_MemberClassF_Member" unitRef="USD">269</rr:ExpenseExampleNoRedemptionYear03>
  <rr:ExpenseExampleNoRedemptionYear05 decimals="INF" contextRef="Duration_01May2012_30Apr2013S000010992_MemberC000053062_MemberClassF_Member" unitRef="USD">472</rr:ExpenseExampleNoRedemptionYear05>
  <rr:ExpenseExampleNoRedemptionYear10 decimals="INF" contextRef="Duration_01May2012_30Apr2013S000010992_MemberC000053062_MemberClassF_Member" unitRef="USD">1056</rr:ExpenseExampleNoRedemptionYear10>
  <rr:BarChartClosingTextBlock contextRef="Duration_01May2012_30Apr2013S000010995_MemberClassF_Member">&lt;div&gt;&lt;table border="0" cellspacing="0" style="; width: 6in;"&gt;&lt;tr valign="bottom"&gt;&lt;td align="right"&gt;&lt;/td&gt;&lt;td align="right"&gt;&lt;b&gt;Quarter&lt;/b&gt;&lt;/td&gt;&lt;td align="right"&gt;&lt;b&gt;Total&lt;/b&gt;&lt;/td&gt;&lt;td align="left"&gt;&amp;nbsp;&lt;/td&gt;&lt;/tr&gt;&lt;tr valign="bottom"&gt;&lt;td align="left"&gt;&amp;nbsp;&lt;/td&gt;&lt;td align="right" style="border-bottom-color: rgb(0, 0, 0); border-bottom-width: 1px; border-bottom-style: solid;"&gt;&lt;b&gt;Ended&lt;/b&gt;&lt;/td&gt;&lt;td align="right" style="border-bottom-color: rgb(0, 0, 0); border-bottom-width: 1px; border-bottom-style: solid; text-indent: 5.93pt;"&gt;&lt;b&gt;Return&lt;/b&gt;&lt;/td&gt;&lt;td align="left" style="border-bottom-color: rgb(0, 0, 0); border-bottom-width: 1px; border-bottom-style: solid;"&gt;&amp;nbsp;&lt;/td&gt;&lt;/tr&gt;&lt;tr valign="bottom"&gt;&lt;td align="left"&gt;Best Quarter (of periods shown)&lt;/td&gt;&lt;td align="right"&gt;6/30/03&lt;/td&gt;&lt;td align="right"&gt;23.45&lt;/td&gt;&lt;td align="left"&gt;%&lt;/td&gt;&lt;/tr&gt;&lt;tr valign="bottom"&gt;&lt;td align="left"&gt;Worst Quarter (of periods shown)&lt;/td&gt;&lt;td align="right"&gt;12/31/08&lt;/td&gt;&lt;td align="right"&gt;-26.21&lt;/td&gt;&lt;td align="left"&gt;%&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;&lt;/div&gt;</rr:BarChartClosingTextBlock>
  <rr:AnnualReturn2012 decimals="4" contextRef="Duration_01May2012_30Apr2013S000010992_MemberC000053062_MemberClassF_Member" unitRef="pure">0.1699</rr:AnnualReturn2012>
  <rr:AnnualReturn2011 decimals="4" contextRef="Duration_01May2012_30Apr2013S000010992_MemberC000053062_MemberClassF_Member" unitRef="pure">-0.0247</rr:AnnualReturn2011>
  <rr:AnnualReturn2010 decimals="4" contextRef="Duration_01May2012_30Apr2013S000010992_MemberC000053062_MemberClassF_Member" unitRef="pure">0.257</rr:AnnualReturn2010>
  <rr:AnnualReturn2009 decimals="4" contextRef="Duration_01May2012_30Apr2013S000010992_MemberC000053062_MemberClassF_Member" unitRef="pure">0.3609</rr:AnnualReturn2009>
  <rr:AnnualReturn2008 decimals="4" contextRef="Duration_01May2012_30Apr2013S000010992_MemberC000053062_MemberClassF_Member" unitRef="pure">-0.3674</rr:AnnualReturn2008>
  <rr:AnnualReturn2007 decimals="4" contextRef="Duration_01May2012_30Apr2013S000010992_MemberC000053062_MemberClassF_Member" unitRef="pure">0.0719</rr:AnnualReturn2007>
  <rr:AnnualReturn2006 decimals="4" contextRef="Duration_01May2012_30Apr2013S000010992_MemberC000053062_MemberClassF_Member" unitRef="pure">0.095</rr:AnnualReturn2006>
  <rr:AnnualReturn2005 decimals="4" contextRef="Duration_01May2012_30Apr2013S000010992_MemberC000053062_MemberClassF_Member" unitRef="pure">0.1177</rr:AnnualReturn2005>
  <rr:StrategyNarrativeTextBlock contextRef="Duration_01May2012_30Apr2013S000010996_MemberClassF_Member">The Portfolio seeks to substantially replicate the total return of the securities comprising the MSCI EAFE Index, taking into consideration redemptions, sales of additional shares, and other adjustments described below. The MSCI EAFE Index is an unmanaged index of common stocks comprised of 909 securities as of December 31, 2012, taken from the 22 MSCI country indices in developed foreign countries outside of North America that aims to include the top 85% of market capitalization in each industry group in each country. As of December 31, 2012, the market capitalization of the MSCI EAFE Index companies ranged from $1 billion to $225.9 billion with a weighted median level of $35.6 billion and a weighted average level of $58.2 billion. The MSCI EAFE Index is capitalization-weighted, meaning that companies with larger market capitalizations will contribute more to the Index's value than companies with smaller market capitalizations.&lt;br/&gt;&lt;br/&gt; The Portfolio will invest primarily in common stocks of the companies that comprise the MSCI EAFE Index. The Portfolio may also invest in EAFE iShares&lt;sup&gt;&amp;#174;&lt;/sup&gt;. EAFE iShares&lt;sup&gt;&amp;#174;&lt;/sup&gt; are units of beneficial interest in a unit investment trust, representing proportionate undivided interests in a portfolio of securities in substantially the same weighting as the common stocks that comprise the MSCI EAFE Index. Derivatives such as options and futures, and options on such futures, that provide exposure to the stocks in the MSCI EAFE Index may also be held by the Portfolio incidental to its main investment strategy. The Portfolio may also sell covered calls on futures contracts or individual securities held in the Portfolio. The investments described in this paragraph are considered to have economic characteristics that are the same as those in the MSCI EAFE Index. The Portfolio may also add new investments in the future that it believes provide effective economic exposure to the MSCI EAFE Index.&lt;br/&gt;&lt;br/&gt; The Portfolio may not hold investments in common stocks of all of the companies in the MSCI EAFE Index. In that case, the Portfolio will typically choose to hold all of the stocks that make up the largest portion of the MSCI EAFE Index's market capitalization value in approximately the same proportion as the Index. When choosing the smaller market capitalization stocks in the MSCI EAFE Index, the Portfolio will attempt to select a sampling of stocks that will match the industry and risk characteristics of these companies without buying all of those stocks. This approach attempts to maximize liquidity while minimizing costs. At such time as the Subadvisor believes the Portfolio has achieved sufficient size, the Subadvisor may attempt to fully replicate the Index. Full replication would be achieved when the Portfolio holds all of the securities in the Index in, as nearly as practicable, identical weightings as the Index.&lt;br/&gt;&lt;br/&gt; Under normal circumstances, the Portfolio will invest at least 80% of its net assets in investments (described above) with economic characteristics similar to the stocks represented in the MSCI EAFE Index. The Portfolio will provide shareholders with at least 60 days' notice before changing this 80% policy. While not required, the Portfolio generally will sell securities that the Index manager removes from the Index. Although the Subadvisor will attempt to invest as much of the Portfolio's assets as is practical in stocks included among the MSCI EAFE Index and futures contracts and options relating thereto under normal market conditions, a portion of the Portfolio may be invested in money market instruments pending investment or to meet redemption requests or other needs for liquid assets.&lt;br/&gt;&lt;br/&gt;The Portfolio may invest in American Depositary Receipts ("ADRs") which may be sponsored or unsponsored.</rr:StrategyNarrativeTextBlock>
  <rr:AnnualReturn2004 decimals="4" contextRef="Duration_01May2012_30Apr2013S000010992_MemberC000053062_MemberClassF_Member" unitRef="pure">0.1552</rr:AnnualReturn2004>
  <rr:AnnualReturn2003 decimals="4" contextRef="Duration_01May2012_30Apr2013S000010992_MemberC000053062_MemberClassF_Member" unitRef="pure">0.3447</rr:AnnualReturn2003>
  <rr:StrategyNarrativeTextBlock contextRef="Duration_01May2012_30Apr2013S000040492_Member">Under normal market conditions, the Portfolio will invest at least 80% of its net assets in exchange-traded funds ("ETFs") and various derivatives, such as futures contracts and options. The portion of the Portfolio that is invested in ETFs will be structured like a fund-of-funds. An ETF is a type of investment company whose investment objective typically is to match the returns of a particular market index, and which generally invests in a broad sample of the securities comprising the particular index. ETFs are traded on a securities exchange at prices quoted by the exchange throughout its trading day. The Portfolio seeks to achieve its objectives by investing in ETFs representing a broad range of asset classes and employing derivatives to manage overall portfolio volatility. Ameritas Investment Partners, Inc. ("AIP"), one of the Portfolio's subadvisors, is responsible for selecting the ETFs in which the Portfolio invests. Milliman Financial Risk Management LLC ("Milliman"), the Portfolio's other subadvisor, is responsible for executing the Portfolio's volatility management strategy described below.&lt;br/&gt;&lt;br/&gt; The Portfolio intends to invest in ETFs and trade futures contracts that provide exposure to a variety of indices, including but not limited to those shown below, and will vary its exposure based on market conditions:&lt;br/&gt;&lt;br/&gt;Fixed Income Indices and Related Components&lt;ul type="square"&gt;&lt;li style="margin-left:-20px"&gt;Barclays U.S. Aggregate Bond Index&lt;/li&gt;&lt;li style="margin-left:-20px"&gt;Barclays U.S. Aggregate Float Adjusted Index&lt;/li&gt;&lt;li style="margin-left:-20px"&gt;Barclays U.S. Treasury 20+ Year Index&lt;/li&gt;&lt;li style="margin-left:-20px"&gt; Barclays U.S. Treasury 7-10 Year Index&lt;/li&gt;&lt;li style="margin-left:-20px"&gt;Barclays U.S. Credit 5-10 Year Index&lt;/li&gt;&lt;li style="margin-left:-20px"&gt;Barclays U.S. Intermediate Credit Index&lt;/li&gt;&lt;li style="margin-left:-20px"&gt;Barclays U.S. Treasury Inflation Protected Securities&lt;br/&gt; (TIPS) Index&lt;/li&gt;&lt;/ul&gt;&lt;ul type="square"&gt;&lt;li style="margin-left:-20px"&gt;Barclays U.S. Mortgage-Backed Securities Index&lt;/li&gt;&lt;li style="margin-left:-20px"&gt; Barclays High Yield Very Liquid Index&lt;/li&gt;&lt;li style="margin-left:-20px"&gt;iBoxx USD Liquid Investment Grade Index&lt;/li&gt;&lt;li style="margin-left:-20px"&gt;Deutsche Bank Emerging Market USD Liquid Balanced&lt;br/&gt;Index &lt;/li&gt;&lt;/ul&gt;U.S. Equity Indices and Related Components&lt;ul type="square"&gt;&lt;li style="margin-left:-20px"&gt;NASDAQ 100 Index&lt;/li&gt;&lt;li style="margin-left:-20px"&gt;Standard &amp;amp; Poor's ("S&amp;amp;P") 500 Index&lt;/li&gt;&lt;li style="margin-left:-20px"&gt;S&amp;amp;P 500 Growth Index&lt;/li&gt;&lt;li style="margin-left:-20px"&gt;S&amp;amp;P 500 Value Index&lt;/li&gt;&lt;li style="margin-left:-20px"&gt;S&amp;amp;P MidCap 400 Index&lt;/li&gt;&lt;li style="margin-left:-20px"&gt;S&amp;amp;P MidCap 400 Growth Index&lt;/li&gt;&lt;li style="margin-left:-20px"&gt; S&amp;amp;P MidCap 400 Value Index&lt;/li&gt;&lt;li style="margin-left:-20px"&gt;Russell 2000 Index&lt;/li&gt;&lt;/ul&gt;International Equity Indices and Related Components&lt;ul type="square"&gt;&lt;li style="margin-left:-20px"&gt; MSCI All Country World ex USA Index&lt;/li&gt;&lt;li style="margin-left:-20px"&gt;MSCI EAFE Index&lt;/li&gt;&lt;li style="margin-left:-20px"&gt; FTSE Emerging Index&lt;/li&gt;&lt;/ul&gt; Sector Indices and Related Components&lt;ul type="square"&gt;&lt;li style="margin-left:-20px"&gt;MSCI U.S. REIT Index&lt;/li&gt;&lt;li style="margin-left:-20px"&gt;S&amp;amp;P North American Natural Resources Sector Index&lt;/li&gt;&lt;/ul&gt; AIP considers the risk and return characteristics of the various asset classes represented by the indices, and the correlation of those characteristics between the various asset classes, in determining a range of possible allocations for each asset class given prevailing market conditions. AIP then reviews the historical returns and the current holdings of the ETFs, and uses that information to select ETF weightings that are consistent with the overall portfolio volatility target. The weighting of the Portfolio's ETF investments representing U.S. and international equity indices, fixed income indices and sector indices will typically range above and below the targeted asset allocation for each such asset class as shown below.&lt;br/&gt;&lt;br/&gt;&lt;table border="0" cellspacing="0" style="width: 6in; font-size: 11pt;"&gt;&lt;tr valign="bottom"&gt;&lt;td align="left"&gt;&amp;nbsp;&lt;/td&gt;&lt;td align="right"&gt;Targeted&lt;/td&gt;&lt;td align="right"&gt;&amp;nbsp;&lt;/td&gt;&lt;td align="right"&gt;Typical Asset&lt;/td&gt;&lt;td align="left"&gt;&amp;nbsp;&lt;/td&gt;&lt;/tr&gt;&lt;tr valign="bottom"&gt;&lt;td align="left"&gt;&amp;nbsp;&lt;/td&gt;&lt;td align="right"&gt;Asset Allocation&lt;/td&gt;&lt;td align="right"&gt;&amp;nbsp;&lt;/td&gt;&lt;td align="right"&gt;Allocation Range&lt;/td&gt;&lt;td align="left"&gt;&amp;nbsp;&lt;/td&gt;&lt;/tr&gt;&lt;tr valign="bottom"&gt;&lt;td align="left" style="border-bottom-color: rgb(0, 0, 0); border-bottom-width: 1px; border-bottom-style: solid;"&gt;ETFs that track:&lt;/td&gt;&lt;td align="right" style="border-bottom-color: rgb(0, 0, 0); border-bottom-width: 1px; border-bottom-style: solid;"&gt;(% of net assets)&lt;/td&gt;&lt;td align="left" style="border-bottom-color: rgb(0, 0, 0); border-bottom-width: 1px; border-bottom-style: solid;"&gt;&amp;nbsp;&lt;/td&gt;&lt;td align="right" style="border-bottom-color: rgb(0, 0, 0); border-bottom-width: 1px; border-bottom-style: solid;"&gt;(% of net assets)&lt;/td&gt;&lt;td align="left" style="border-bottom-color: rgb(0, 0, 0); border-bottom-width: 1px; border-bottom-style: solid;"&gt;&amp;nbsp;&lt;/td&gt;&lt;/tr&gt;&lt;tr valign="bottom"&gt;&lt;td align="left"&gt;U.S. &amp;amp; International&lt;/td&gt;&lt;td align="left"&gt;&amp;nbsp;&lt;/td&gt;&lt;td align="left"&gt;&amp;nbsp;&lt;/td&gt;&lt;td align="left"&gt;&amp;nbsp;&lt;/td&gt;&lt;td align="left"&gt;&amp;nbsp;&lt;/td&gt;&lt;/tr&gt;&lt;tr valign="bottom"&gt;&lt;td align="left"&gt;Equity Indices&lt;/td&gt;&lt;td align="left"&gt;&amp;nbsp;&lt;/td&gt;&lt;td align="left"&gt;&amp;nbsp;&lt;/td&gt;&lt;td align="left"&gt;&amp;nbsp;&lt;/td&gt;&lt;td align="left"&gt;&amp;nbsp;&lt;/td&gt;&lt;/tr&gt;&lt;tr valign="bottom"&gt;&lt;td align="left"&gt;("Equity ETFs")&lt;/td&gt;&lt;td align="right"&gt;34&lt;/td&gt;&lt;td align="left"&gt;%&lt;/td&gt;&lt;td align="right"&gt;24-44&lt;/td&gt;&lt;td align="left"&gt;%&lt;/td&gt;&lt;/tr&gt;&lt;tr valign="bottom"&gt;&lt;td align="left"&gt;Fixed Income Indices&lt;/td&gt;&lt;td align="left"&gt;&amp;nbsp;&lt;/td&gt;&lt;td align="left"&gt;&amp;nbsp;&lt;/td&gt;&lt;td align="left"&gt;&amp;nbsp;&lt;/td&gt;&lt;td align="left"&gt;&amp;nbsp;&lt;/td&gt;&lt;/tr&gt;&lt;tr valign="bottom"&gt;&lt;td align="left"&gt;("Fixed Income ETFs")&lt;/td&gt;&lt;td align="right"&gt;55&lt;/td&gt;&lt;td align="left"&gt;%&lt;/td&gt;&lt;td align="right"&gt;45-65&lt;/td&gt;&lt;td align="left"&gt;%&lt;/td&gt;&lt;/tr&gt;&lt;tr valign="bottom"&gt;&lt;td align="left"&gt;Sector Indices&lt;/td&gt;&lt;td align="left"&gt;&amp;nbsp;&lt;/td&gt;&lt;td align="left"&gt;&amp;nbsp;&lt;/td&gt;&lt;td align="left"&gt;&amp;nbsp;&lt;/td&gt;&lt;td align="left"&gt;&amp;nbsp;&lt;/td&gt;&lt;/tr&gt;&lt;tr valign="bottom"&gt;&lt;td align="left" style="border-bottom-color: rgb(0, 0, 0); border-bottom-width: 1px; border-bottom-style: solid;"&gt;("Sector ETFs")&lt;/td&gt;&lt;td align="right" style="border-bottom-color: rgb(0, 0, 0); border-bottom-width: 1px; border-bottom-style: solid;"&gt;11&lt;/td&gt;&lt;td align="left" style="border-bottom-color: rgb(0, 0, 0); border-bottom-width: 1px; border-bottom-style: solid;"&gt;%&lt;/td&gt;&lt;td align="right" style="border-bottom-color: rgb(0, 0, 0); border-bottom-width: 1px; border-bottom-style: solid;"&gt;1-21&lt;/td&gt;&lt;td align="left" style="border-bottom-color: rgb(0, 0, 0); border-bottom-width: 1px; border-bottom-style: solid;"&gt;%&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;&lt;br/&gt;&lt;br/&gt;AIP may reallocate net assets among the various ETFs as market conditions warrant and may allocate portions of the Portfolio to ETFs that track equity, fixed income and sector indices other than those listed above.&lt;br/&gt;&lt;br/&gt;The ETFs represent a variety of asset categories and investment styles. The Equity ETFs are based on indices comprised of the common stock of U.S. and non-U.S. issuers whose fundamentals appeal to growth and value-oriented investors. The Fixed Income ETFs are based on indices comprised of fixed income securities of U.S. and non-U.S. issuers, corporate, mortgage-backed and government securities, investment grade securities, and securities rated below investment grade (commonly known as "junk bonds"). The Sector ETFs are based on indices comprised of real estate investment trusts ("REITs") and natural resource-related stocks.&lt;br/&gt;&lt;br/&gt;In its selection of investments for the Portfolio, AIP seeks ETFs that are representative of the desired asset class and whose underlying fundamentals appear to have the potential for above-average long-term performance. These may include ETFs that are expected to show above-average growth over the long-term as well as those that appear to AIP to be undervalued.&lt;br/&gt;&lt;br/&gt;The Portfolio may sell or reduce its position in an ETF when, in AIP's opinion, the macroeconomic outlook changes, valuation issues arise, the Portfolio needs to be rebalanced, or there is better opportunity elsewhere.&lt;br/&gt;&lt;br/&gt;The Portfolio's other subadvisor, Milliman, is responsible for executing the volatility management strategy. Volatility is a statistical measurement of the magnitude of up and down fluctuations in the value of a financial instrument, index or portfolio over time. Changes in the level of market volatility may result in rapid and dramatic price swings. Milliman seeks to stabilize the volatility of the Portfolio around a predetermined target level and reduce the potential for portfolio losses during periods of significant and sustained market declines, while providing opportunity for growth during periods when markets are appreciating. The Portfolio generally targets an annualized return volatility level of 8%. While Milliman attempts to manage the Portfolio's volatility to this target, over any particular time horizon the Portfolio may experience return volatility that is higher or lower than its target return volatility.&lt;br/&gt;&lt;br/&gt;Calvert and Milliman currently anticipate that the volatility management strategy will be implemented by entering into futures contracts based on one or more stock market indices, although it is possible that other derivative instruments will be used in the future to implement the strategy. An index future is a contract to buy or sell the cash value of a specific market index at a specified price by a specified date. Milliman implements the volatility management strategy primarily through short futures positions in an attempt to hedge against changes in market volatility and declines in the value of the Portfolio's investments in ETFs. Milliman seeks to stabilize volatility in the Portfolio over time at the target level by continuously monitoring and forecasting volatility in the markets utilizing a proprietary model, and adjusting the Portfolio's futures positions in response to specific changes in the market and the Portfolio. To the extent that the volatility management strategy realizes gains, the Portfolio may use these gains to further invest in ETFs in an effort to increase long-term returns.&lt;br/&gt;&lt;br/&gt;Futures contracts involve the use of leverage. Amounts referred to as margin are posted to establish and maintain a position in a futures contract, but gains and losses on each futures contract are calculated based on the notional value of the futures contract, which is much larger than the margin. The notional value represents the economic exposure provided by each futures contract. Accordingly, the notional value of the Portfolio's short futures positions will generally not exceed 65% of its net assets, which is the Portfolio's maximum combined exposure to Equity ETFs and Sector ETFs. Similarly, the notional value of the Portfolio's long futures positions will generally not exceed 10% of its net assets, which is an approximation of the portion of Portfolio's net assets that will be allocated to the implementation of the volatility management strategy.&lt;br/&gt;&lt;br/&gt;The Portfolio may, without limitation, invest in lower risk assets such as cash or short-term fixed-income securities instead of riskier assets such as equity and fixed-income ETFs and derivatives. The Fund also may engage in active and frequent trading of ETFs and derivatives to achieve its primary investment objective.</rr:StrategyNarrativeTextBlock>
  <rr:AverageAnnualReturnYear01 decimals="4" contextRef="Duration_01May2012_30Apr2013S000010992_MemberC000053062_MemberClassF_Member" unitRef="pure">0.1699</rr:AverageAnnualReturnYear01>
  <rr:AverageAnnualReturnYear01 decimals="4" contextRef="Duration_01May2012_30Apr2013S000010992_MemberClassF_MemberSAndPMidCapFourHundredIndex_Member" unitRef="pure">0.1788</rr:AverageAnnualReturnYear01>
  <rr:AverageAnnualReturnYear01 decimals="4" contextRef="Duration_01May2012_30Apr2013S000010992_MemberClassF_MemberLipperVaMidCapCoreFundsAverage_Member" unitRef="pure">0.1607</rr:AverageAnnualReturnYear01>
  <rr:RiskHeading contextRef="Duration_01May2012_30Apr2013S000040492_Member">&lt;b&gt;Principal Risks&lt;/b&gt;</rr:RiskHeading>
  <rr:AverageAnnualReturnYear05 decimals="4" contextRef="Duration_01May2012_30Apr2013S000010992_MemberC000053062_MemberClassF_Member" unitRef="pure">0.0431</rr:AverageAnnualReturnYear05>
  <rr:AverageAnnualReturnYear05 decimals="4" contextRef="Duration_01May2012_30Apr2013S000010992_MemberClassF_MemberSAndPMidCapFourHundredIndex_Member" unitRef="pure">0.0515</rr:AverageAnnualReturnYear05>
  <rr:AverageAnnualReturnYear05 decimals="4" contextRef="Duration_01May2012_30Apr2013S000010992_MemberClassF_MemberLipperVaMidCapCoreFundsAverage_Member" unitRef="pure">0.0282</rr:AverageAnnualReturnYear05>
  <rr:AverageAnnualReturnYear10 decimals="4" contextRef="Duration_01May2012_30Apr2013S000010992_MemberC000053062_MemberClassF_Member" unitRef="pure">0.0967</rr:AverageAnnualReturnYear10>
  <rr:AverageAnnualReturnYear10 decimals="4" contextRef="Duration_01May2012_30Apr2013S000010992_MemberClassF_MemberSAndPMidCapFourHundredIndex_Member" unitRef="pure">0.1053</rr:AverageAnnualReturnYear10>
  <rr:AverageAnnualReturnYear10 decimals="4" contextRef="Duration_01May2012_30Apr2013S000010992_MemberClassF_MemberLipperVaMidCapCoreFundsAverage_Member" unitRef="pure">0.0896</rr:AverageAnnualReturnYear10>
  <rr:RiskNarrativeTextBlock contextRef="Duration_01May2012_30Apr2013S000040492_Member">Asset Allocation Risk. The Subadvisor's selection of ETFs and the allocation of Portfolio assets to those ETFs may cause the Portfolio to underperform.&lt;br/&gt;&lt;br/&gt;Management Risk. Individual investments of an ETF may not perform as expected, and the ETF's portfolio management practices may not achieve the desired result. In addition, the volatility management strategy may not achieve its desired results.&lt;br/&gt;&lt;br/&gt;Exchange-Traded Fund (ETF) Risk. An ETF seeks to track the performance of an index by holding in its portfolio shares of all the companies, or a representative sample of the companies, that are components of a particular index. The risks of investment in ETFs typically reflect the risk of the types of securities in which the ETFs invest. In addition, when the Fund invests in an ETF, shareholders of the Fund bear their proportionate share of the ETF's fees and expenses as well as their share of the Fund's fees and expenses.&lt;br/&gt;&lt;br/&gt;Active Trading Strategy Risk. The Fund employs an active style that seeks to position the Portfolio with ETFs and derivatives that offer the greatest price appreciation while minimizing risk. This style can result in higher turnover (exceeding 100%), and may translate to higher transaction costs.&lt;br/&gt;&lt;br/&gt; &lt;b&gt;Equity Investments.&lt;/b&gt; The Portfolio shares the principal risks of the equity securities held by the underlying ETFs, including the key risks below.&lt;br/&gt;&lt;br/&gt; Stock Market Risk. The market prices of stocks held by the underlying ETFs may fall.&lt;br/&gt;&lt;br/&gt;Common Stock Risk. Although common stocks have a history of long-term growth in value, their prices fluctuate based on changes in a company's financial condition, on overall market and economic conditions, and on investors' perception of a company's well-being.&lt;br/&gt;&lt;br/&gt;Foreign Securities Risk. Investing in foreign securities involves additional risks relating to political, social, and economic developments abroad. Other risks result from differences between regulations that apply to U.S. and foreign issuers and markets, and the potential for foreign markets to be less liquid and more volatile than U.S. markets.&lt;br/&gt;&lt;br/&gt;Foreign securities include ADRs and GDRs. Unsponsored ADRs involve additional risks because U.S. reporting requirements do not apply and the issuing bank will recover shareholder distribution costs from movement of share prices and payment of dividends.&lt;br/&gt;&lt;br/&gt;Emerging Markets Risk. The risks of investing in emerging market securities are greater than those of investing in securities of developed foreign countries. These risks include volatile currency exchange rates, periods of high inflation, increased risk of default, greater social, economic and political uncertainty and instability, less governmental supervision and regulation of securities markets, weaker auditing and financial reporting standards, lack of liquidity in the markets, and the significantly smaller market capitalizations of emerging market issuers.&lt;br/&gt;&lt;br/&gt;Market Capitalization Risk. Large-cap companies may be unable to respond quickly to new competitive challenges such as changes in technology, and also may not be able to attain the high growth rate of successful smaller companies, especially during extended periods of economic expansion. Prices of small-cap and mid-cap stocks can be more volatile than those of larger, more established companies. Small-cap and mid-cap companies are more likely to have more limited product lines, fewer capital resources and less depth of management than larger companies. Prices of micro-cap securities are generally even more volatile and their markets are even less liquid relative to small-cap, mid-cap and large-cap securities.&lt;br/&gt;&lt;br/&gt;Natural Resources Risk. Natural resources have a historically low correlation to financial assets such as stocks and bonds. Correspondingly, their prices respond differently to financial market and economic conditions, although both are driven by the basic forces of supply and demand. However, because stocks and bonds are traded publicly on a secondary market, prices can quickly reflect forecasted earnings and future cash flows. Conversely, many factors may contribute to how natural resources prices respond to market events including warehousing and delivery constraints, changes in supply and demand dynamics, and a potential lack of fungibility. Other factors affecting natural resources prices include weather, agricultural production, disease, pestilence, technological developments, changes in interest rates, and domestic and foreign political and economic events and policies, including trade, fiscal, monetary and currency exchange policies. In addition, markets for commodities are likely to be volatile and there may be sharp price fluctuations even during periods when prices overall are rising.&lt;br/&gt;&lt;br/&gt;Real Estate Investing Risk. Investing in REITs exposes investors to the risks of owning real estate directly, as well as to risks that relate specifically to the way in which REITs are organized and operated. Real estate is a cyclical business, highly sensitive to general and local economic developments and characterized by intense competition and periodic overbuilding. Real estate income and values also may be greatly affected by demographic trends, such as population shifts or changing tastes and values. Government actions, such as tax increases, zoning law changes or environmental regulations, also may have a major impact on real estate. Changing interest rates and credit quality requirements also will affect the cash flow of real estate companies and their ability to meet capital needs. REITs generally invest directly in real estate (equity REITs), in mortgages secured by interests in real estate (mortgage REITs) or in some combination of the two (hybrid REITs). Operating REITs requires specialized management skills. Individual REITs may own a limited number of properties and may concentrate in a particular region or property type. REITs also must satisfy specific Internal Revenue Code requirements in order to qualify for the tax-free pass through of income and net realized gains.&lt;br/&gt;&lt;br/&gt;&lt;b&gt;Fixed-Income Investments. &lt;/b&gt;The Portfolio shares the principal risks of fixed-income securities held by the underlying ETFs, including the key risks below.&lt;br/&gt;&lt;br/&gt;Bond Market Risk. The market prices of bonds held by the underlying ETFs may fall.&lt;br/&gt;&lt;br/&gt;Credit Risk. The credit quality of fixed-income securities may deteriorate, which could lead to default or bankruptcy of the issuer where the issuer becomes unable to pay its obligations when due.&lt;br/&gt;&lt;br/&gt;Interest Rate Risk. A change in interest rates may adversely affect the value of the securities. When interest rates rise, the value of fixed-income securities will generally fall. Longer-term securities are subject to greater interest rate risk.&lt;br/&gt;&lt;br/&gt;Junk Bond Risk. Investments in junk bonds can involve a substantial risk of loss. Junk bonds are considered to be speculative with respect to the issuer's ability to pay interest and principal. These securities, which are rated below investment grade, have a higher risk of issuer default, are subject to greater price volatility than investment grade securities and may be illiquid.&lt;br/&gt;&lt;br/&gt;Mortgage-Backed and Asset-Backed Securities Risk. The value of investments in mortgage-backed and asset-backed securities is subject to interest rate risk and credit risk. These securities are also subject to the risk that borrowers will prepay the principal on their loans more quickly than expected (prepayment risk) or more slowly than expected (extension risk), which will affect the yield, average life and price of the securities. In addition, faster-than-expected prepayments may cause the Portfolio to invest the prepaid principal in lower yielding securities, and slower-than-expected prepayments may reduce the potential for the Portfolio to invest in higher yielding securities.&lt;br/&gt;&lt;br/&gt;Mortgage-Backed Security Risk (Government-Sponsored Enterprises). Debt and mortgage-backed securities issued by government-sponsored enterprises ("GSEs") such as the Federal National Mortgage Association ("FNMA") and the Federal Home Loan Mortgage Corporation ("FHLMC") are neither insured nor guaranteed by the U.S. Treasury and are not backed by the full faith and credit of the U.S. government. Such securities are only supported by the credit of the GSE. The U.S. government has provided financial support to FNMA and FHLMC, but there can be no assurance that it will support these or other GSEs in the future.&lt;br/&gt;&lt;br/&gt;&lt;b&gt;Money Market Investments. &lt;/b&gt;The Portfolio shares the principal risks of money market securities held by the underlying ETFs, including the key risk below.&lt;br/&gt;&lt;br/&gt;Money Market Risk. Yield will change in response to market interest rates; in general, as market rates go up, so will yield, and vice versa. Credit quality of the securities may deteriorate, which could lead to default or bankruptcy of the issuer where the issuer becomes unable to pay its obligations when due.&lt;br/&gt;&lt;br/&gt;&lt;b&gt;Volatility Management. &lt;/b&gt;The Portfolio shares the principal risks associated with its volatility management strategy, including the key risks below.&lt;br/&gt;&lt;br/&gt;Derivatives Risk. In general, a derivative is a financial contract whose value is based on the value of a financial asset (such as a stock, bond, or currency), a physical asset (such as gold), or a market index (such as the S&amp;amp;P 500 Index). Derivative instruments are subject to a number of risks, including the risk of changes in the market price of the underlying asset, credit risk with respect to the counterparty, and liquidity risk. The Portfolio's use of certain derivatives may also have a leveraging effect, which may increase the volatility of the Portfolio and reduce its returns.&lt;br/&gt;&lt;br/&gt;Futures Risk. Using futures may increase the Portfolio's volatility and may involve a small cash investment relative to the magnitude of risk assumed. If changes in a future's value do not correspond to changes in the value of the Portfolio's other investments, the Portfolio may not fully benefit from or could lose money on the futures position. Futures can involve risk of loss if the party who issued the future defaults on its obligation. Futures may also be less liquid and more difficult to value.&lt;br/&gt;&lt;br/&gt;Model Risk. The volatility management models may not accurately represent risk and projected performance, in which case performance may deviate from expectations. For example, market environments during which the stock market trends generally higher often experience low volatility, but the Portfolio may underperform in those market environments if the volatility management models forecast higher volatility. Conversely, market environments during which the stock market experiences sudden and sharp declines often experience high volatility, but the Portfolio may underperform in those market environments if the models forecast lower volatility.&lt;br/&gt;&lt;br/&gt;Basis Risk. There may be deviations between the derivatives used in the volatility management strategy and the elements of risk those derivatives are meant to manage, introducing basis risk. For example, a portion of the annualized return volatility that the Portfolio will experience will arise from the Portfolio's holdings of ETFs that invest in fixed-income securities, however, Milliman intends to use stock index futures contracts to implement the volatility management strategy. Accordingly, the volatility management strategy may not achieve its objective during periods when the fixed-income markets are unusually volatile.&lt;br/&gt;&lt;br/&gt;Gap Risk. Large discontinuous jumps in the market may cause the volatility management strategy to underperform.&lt;br/&gt;&lt;br/&gt;Credit Risk. The hedging strategies employed in the volatility management strategy can introduce counterparty credit risk, even though efforts are made to mitigate this risk through the use of collateral and clearing mechanisms.&lt;br/&gt;&lt;br/&gt;Leverage Risk. The volatility management strategy employs leverage to utilize capital efficiently. While losses should in no circumstance exceed the value of the hedged position, they may be large relative to the amount of capital employed.</rr:RiskNarrativeTextBlock>
  <rr:RiskNarrativeTextBlock contextRef="Duration_01May2012_30Apr2013S000010996_MemberClassF_Member">You could lose money on your investment in the Portfolio, or the Portfolio could underperform, because of the risks described below. An investment in the Portfolio is not a bank deposit and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.&lt;br/&gt;&lt;br/&gt;Management Risk. Individual investments of the Portfolio may not perform as expected, and the portfolio management practices may not achieve the desired result.&lt;br/&gt;&lt;br/&gt;Stock Market Risk. The market prices of stocks held by the Portfolio may fall.&lt;br/&gt;&lt;br/&gt;Index Tracking Risk. An index fund has operating expenses; a market index does not. The Portfolio, while expected to track its target index as closely as possible, will not be able to match the performance of the index exactly.&lt;br/&gt;&lt;br/&gt; Common Stock Risk. Although common stocks have a history of long-term growth in value, their prices fluctuate based on changes in a company's financial condition, on overall market and economic conditions, and on investors' perception of a company's well-being.&lt;br/&gt;&lt;br/&gt; Large-Cap Company Risk. Large-cap companies may be unable to respond quickly to new competitive challenges such as changes in technology, and also may not be able to attain the high growth rate of successful smaller companies, especially during extended periods of economic expansion.&lt;br/&gt;&lt;br/&gt; Foreign Securities Risk. Investing in foreign securities involves additional risks relating to political, social, and economic developments abroad. Other risks result from the differences between the regulations to which U.S. and foreign issuers and markets are subject, and the potential for foreign markets to be less liquid and more volatile than U.S. markets. Foreign securities include ADRs. Unsponsored ADRs involve additional risks because U.S. reporting requirements do not apply and the issuing bank will recover shareholder distribution costs from movement of share prices and payment of dividends. &lt;br/&gt;&lt;br/&gt;Foreign Currency Risk. Securities that trade or are denominated in currencies other than the U.S. dollar may be adversely affected by fluctuations in currency exchange rates. When the U.S. dollar strengthens relative to a foreign currency, the U.S. dollar value of an investment denominated in that currency will typically fall. ADRs indirectly bear currency risk because they represent an interest in securities that are not denominated in U.S. dollars.&lt;br/&gt;&lt;br/&gt; Foreign Currency Transactions Risk. Transactions in foreign currency in connection with the purchase and sale of investments in foreign markets may result in foreign currency exposure and the potential for losses due to fluctuations in currency exchange rates. These losses may occur without regard to the quality or performance of the investment itself. Foreign currency transactions may also prevent the Portfolio from realizing profits on favorable movements in exchange rates.&lt;br/&gt;&lt;br/&gt; Risk of EAFE iShares&lt;sup&gt;&amp;#174;&lt;/sup&gt;. EAFE iShares&lt;sup&gt;&amp;#174; &lt;/sup&gt;are subject to the risk that the stock prices of the companies in the MSCI EAFE Index may fall. An investment in EAFE iShares&lt;sup&gt;&amp;#174; &lt;/sup&gt;may not replicate exactly the performance of the MSCI EAFE Index for any number of reasons. Shareholders of the Portfolio bear their proportionate share of the operating expenses of the underlying investment as well as their share of the Portfolio's fees and expenses.&lt;br/&gt;&lt;br/&gt; Stock Index Futures and Options Risk. Using stock index futures and options may increase the Portfolio's volatility and may involve a small cash investment relative to the magnitude of risk assumed. If changes in a derivative's value do not correspond to changes in the value of the Portfolio's other investments, the Portfolio may not fully benefit from or could lose money on the derivative position. Derivatives can involve risk of loss if the party who issued the derivative defaults on its obligation. Derivatives may also be less liquid and more difficult to value.</rr:RiskNarrativeTextBlock>
  <rr:ShareholderFeesTableTextBlock contextRef="Duration_01May2012_30Apr2013S000010996_MemberClassF_Member">&lt;div style="display:none"&gt;~ http://www.calvert.com/role/ScheduleShareholderFeesCalvertVPEAFEInternationalIndexPortfolioClassF column period compact * ~&lt;/div&gt;</rr:ShareholderFeesTableTextBlock>
  <rr:BarChartAndPerformanceTableHeading contextRef="Duration_01May2012_30Apr2013S000040492_Member">&lt;b&gt;Performance&lt;/b&gt;</rr:BarChartAndPerformanceTableHeading>
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  <rr:BarChartTableTextBlock contextRef="Duration_01May2012_30Apr2013S000010996_MemberClassF_Member">&lt;div style="display:none"&gt;~ http://www.calvert.com/role/ScheduleAnnualTotalReturnsCalvertVPEAFEInternationalIndexPortfolioClassFBarChart column period compact * ~&lt;/div&gt;</rr:BarChartTableTextBlock>
  <rr:ExpenseExampleWithRedemptionTableTextBlock contextRef="Duration_01May2012_30Apr2013S000010996_MemberClassF_Member">&lt;div style="display:none"&gt;~ http://www.calvert.com/role/ScheduleExpenseExampleTransposedCalvertVPEAFEInternationalIndexPortfolioClassF column period compact * ~&lt;/div&gt;</rr:ExpenseExampleWithRedemptionTableTextBlock>
  <rr:PerformanceTableTextBlock contextRef="Duration_01May2012_30Apr2013S000010996_MemberClassF_Member">&lt;div style="display:none"&gt;~ http://www.calvert.com/role/ScheduleAverageAnnualTotalReturnsTransposedCalvertVPEAFEInternationalIndexPortfolioClassF column period compact * ~&lt;/div&gt;</rr:PerformanceTableTextBlock>
  <rr:MaximumSalesChargeImposedOnPurchasesOverOfferingPrice decimals="4" contextRef="Duration_01May2012_30Apr2013S000040492_MemberC000125703_Member" unitRef="pure">0</rr:MaximumSalesChargeImposedOnPurchasesOverOfferingPrice>
  <rr:MaximumDeferredSalesChargeOverOfferingPrice decimals="4" contextRef="Duration_01May2012_30Apr2013S000040492_MemberC000125703_Member" unitRef="pure">0</rr:MaximumDeferredSalesChargeOverOfferingPrice>
  <rr:ManagementFeesOverAssets decimals="4" contextRef="Duration_01May2012_30Apr2013S000040492_MemberC000125703_Member" unitRef="pure">0.0052</rr:ManagementFeesOverAssets>
  <rr:DistributionAndService12b1FeesOverAssets decimals="4" contextRef="Duration_01May2012_30Apr2013S000040492_MemberC000125703_Member" unitRef="pure">0.0025</rr:DistributionAndService12b1FeesOverAssets>
  <rr:OtherExpensesOverAssets id="Item_9" decimals="4" contextRef="Duration_01May2012_30Apr2013S000040492_MemberC000125703_Member" unitRef="pure">0.008</rr:OtherExpensesOverAssets>
  <rr:AcquiredFundFeesAndExpensesOverAssets id="Item_10" decimals="4" contextRef="Duration_01May2012_30Apr2013S000040492_MemberC000125703_Member" unitRef="pure">0.0014</rr:AcquiredFundFeesAndExpensesOverAssets>
  <rr:ExpensesOverAssets decimals="4" contextRef="Duration_01May2012_30Apr2013S000040492_MemberC000125703_Member" unitRef="pure">0.0171</rr:ExpensesOverAssets>
  <rr:FeeWaiverOrReimbursementOverAssets id="Item_11" decimals="4" contextRef="Duration_01May2012_30Apr2013S000040492_MemberC000125703_Member" unitRef="pure">-0.0074</rr:FeeWaiverOrReimbursementOverAssets>
  <rr:NetExpensesOverAssets decimals="4" contextRef="Duration_01May2012_30Apr2013S000040492_MemberC000125703_Member" unitRef="pure">0.0097</rr:NetExpensesOverAssets>
  <rr:StrategyNarrativeTextBlock contextRef="Duration_01May2012_30Apr2013S000040491_Member">Under normal market conditions, the Portfolio will invest at least 80% of its net assets in exchange-traded funds ("ETFs") and various derivatives, such as futures contracts and options. The portion of the Portfolio that is invested in ETFs will be structured like a fund-of-funds. An ETF is a type of investment company whose investment objective typically is to match the returns of a particular market index, and which generally invests in a broad sample of the securities comprising the particular index. ETFs are traded on a securities exchange at prices quoted by the exchange throughout its trading day. The Portfolio seeks to achieve its objectives by investing in ETFs representing a broad range of asset classes and employing derivatives to manage overall portfolio volatility. Ameritas Investment Partners, Inc. ("AIP"), one of the Portfolio's subadvisors, is responsible for selecting the ETFs in which the Portfolio invests. Milliman Financial Risk Management LLC ("Milliman"), the Portfolio's other subadvi-sor, is responsible for executing the Portfolio's volatility management strategy described below. &lt;br/&gt;&lt;br/&gt;The Portfolio intends to invest in ETFs and trade futures contracts that provide exposure to a variety of indices, including but not limited to those shown below, and will vary its exposure based on market conditions: &lt;br/&gt;&lt;br/&gt;Fixed Income Indices and Related Components &lt;ul type="square"&gt;&lt;li style="margin-left:-20px"&gt;Barclays U.S. Aggregate Bond Index&lt;/li&gt; &lt;li style="margin-left:-20px"&gt;Barclays U.S. Aggregate Float Adjusted Index&lt;/li&gt; &lt;li style="margin-left:-20px"&gt;Barclays U.S. Treasury 20+ Year Index&lt;/li&gt; &lt;li style="margin-left:-20px"&gt;Barclays U.S. Treasury 7-10 Year Index&lt;/li&gt; &lt;li style="margin-left:-20px"&gt;Barclays U.S. Credit 5-10 Year Index&lt;/li&gt; &lt;li style="margin-left:-20px"&gt;Barclays U.S. Intermediate Credit Index&lt;/li&gt; &lt;li style="margin-left:-20px"&gt;Barclays U.S. Treasury Inflation Protected Securities&lt;br/&gt;(TIPS) Index&lt;/li&gt;&lt;li style="margin-left:-20px"&gt;Barclays U.S. Mortgage-Backed Securities Index&lt;/li&gt; &lt;li style="margin-left:-20px"&gt;Barclays High Yield Very Liquid Index&lt;/li&gt; &lt;li style="margin-left:-20px"&gt;iBoxx USD Liquid Investment Grade Index&lt;/li&gt; &lt;li style="margin-left:-20px"&gt;Deutsche Bank Emerging Market USD Liquid Balanced &lt;br/&gt;Index&lt;/li&gt;&lt;/ul&gt; U.S. Equity Indices and Related Components &lt;ul type="square"&gt;&lt;li style="margin-left:-20px"&gt;NASDAQ 100 Index&lt;/li&gt; &lt;li style="margin-left:-20px"&gt;Standard &amp;amp; Poor's ("S&amp;amp;P") 500 Index&lt;/li&gt; &lt;li style="margin-left:-20px"&gt;S&amp;amp;P 500 Growth Index&lt;/li&gt; &lt;li style="margin-left:-20px"&gt;S&amp;amp;P 500 Value Index&lt;/li&gt; &lt;li style="margin-left:-20px"&gt;S&amp;amp;P MidCap 400 Index&lt;/li&gt; &lt;li style="margin-left:-20px"&gt;S&amp;amp;P MidCap 400 Growth Index&lt;/li&gt; &lt;li style="margin-left:-20px"&gt;S&amp;amp;P MidCap 400 Value Index&lt;/li&gt; &lt;li style="margin-left:-20px"&gt;Russell 2000 Index&lt;/li&gt;&lt;/ul&gt; International Equity Indices and Related Components &lt;ul type="square"&gt;&lt;li style="margin-left:-20px"&gt;MSCI All Country World ex USA Index&lt;/li&gt; &lt;li style="margin-left:-20px"&gt;MSCI EAFE Index&lt;/li&gt; &lt;li style="margin-left:-20px"&gt;FTSE Emerging Index&lt;/li&gt;&lt;/ul&gt; Sector Indices and Related Components &lt;ul type="square"&gt;&lt;li style="margin-left:-20px"&gt;MSCI U.S. REIT Index&lt;/li&gt; &lt;li style="margin-left:-20px"&gt;S&amp;amp;P North American Natural Resources Sector Index&lt;/li&gt;&lt;/ul&gt; AIP considers the risk and return characteristics of the various asset classes represented by the indices, and the correlation of those characteristics between the various asset classes, in determining a range of possible allocations for each asset class given prevailing market conditions. AIP then reviews the historical returns and the current holdings of the ETFs, and uses that information to select ETF weightings that are consistent with the overall portfolio volatility target. The weighting of the Portfolio's ETF investments representing U.S. and international equity indices, fixed income indices and sector indices will typically range above and below the targeted asset allocation for each such asset class as shown below.&lt;table border="0" cellspacing="0" style="width: 6in"&gt;&lt;tr valign="bottom"&gt;&lt;td align="left"&gt;&amp;nbsp;&lt;/td&gt;&lt;td align="right"&gt;Targeted&lt;/td&gt;&lt;td align="right"&gt;&amp;nbsp;&lt;/td&gt;&lt;td align="right"&gt;Typical Asset&lt;/td&gt;&lt;td align="left"&gt;&amp;nbsp;&lt;/td&gt;&lt;/tr&gt;&lt;tr valign="bottom"&gt;&lt;td align="left"&gt;&amp;nbsp;&lt;/td&gt;&lt;td align="right"&gt;Asset Allocation&lt;/td&gt;&lt;td align="right"&gt;&amp;nbsp;&lt;/td&gt;&lt;td align="right"&gt;Allocation Range&lt;/td&gt;&lt;td align="left"&gt;&amp;nbsp;&lt;/td&gt;&lt;/tr&gt;&lt;tr valign="bottom"&gt;&lt;td align="left" style="border-bottom-color: rgb(0, 0, 0); border-bottom-width: 1px; border-bottom-style: solid;"&gt;ETFs that track:&lt;/td&gt;&lt;td align="right" style="border-bottom-color: rgb(0, 0, 0); border-bottom-width: 1px; border-bottom-style: solid;"&gt;(% of net assets)&lt;/td&gt;&lt;td align="left" style="border-bottom-color: rgb(0, 0, 0); border-bottom-width: 1px; border-bottom-style: solid;"&gt;&amp;nbsp;&lt;/td&gt;&lt;td align="right" style="border-bottom-color: rgb(0, 0, 0); border-bottom-width: 1px; border-bottom-style: solid;"&gt;(% of net assets)&lt;/td&gt;&lt;td align="left" style="border-bottom-color: rgb(0, 0, 0); border-bottom-width: 1px; border-bottom-style: solid;"&gt;&amp;nbsp;&lt;/td&gt;&lt;/tr&gt;&lt;tr valign="bottom"&gt;&lt;td align="left"&gt;U.S. &amp;amp; International&lt;/td&gt;&lt;td align="left"&gt;&amp;nbsp;&lt;/td&gt;&lt;td align="left"&gt;&amp;nbsp;&lt;/td&gt;&lt;td align="left"&gt;&amp;nbsp;&lt;/td&gt;&lt;td align="left"&gt;&amp;nbsp;&lt;/td&gt;&lt;/tr&gt;&lt;tr valign="bottom"&gt;&lt;td align="left"&gt;Equity Indices&lt;/td&gt;&lt;td align="left"&gt;&amp;nbsp;&lt;/td&gt;&lt;td align="left"&gt;&amp;nbsp;&lt;/td&gt;&lt;td align="left"&gt;&amp;nbsp;&lt;/td&gt;&lt;td align="left"&gt;&amp;nbsp;&lt;/td&gt;&lt;/tr&gt;&lt;tr valign="bottom"&gt;&lt;td align="left"&gt;("Equity ETFs")&lt;/td&gt;&lt;td align="right"&gt;48&lt;/td&gt;&lt;td align="left"&gt;%&lt;/td&gt;&lt;td align="right"&gt;38-58&lt;/td&gt;&lt;td align="left"&gt;%&lt;/td&gt;&lt;/tr&gt;&lt;tr valign="bottom"&gt;&lt;td align="left"&gt;Fixed Income Indices&lt;/td&gt;&lt;td align="left"&gt;&amp;nbsp;&lt;/td&gt;&lt;td align="left"&gt;&amp;nbsp;&lt;/td&gt;&lt;td align="left"&gt;&amp;nbsp;&lt;/td&gt;&lt;td align="left"&gt;&amp;nbsp;&lt;/td&gt;&lt;/tr&gt;&lt;tr valign="bottom"&gt;&lt;td align="left"&gt;("Fixed Income ETFs")&lt;/td&gt;&lt;td align="right"&gt;40&lt;/td&gt;&lt;td align="left"&gt;%&lt;/td&gt;&lt;td align="right"&gt;30-50&lt;/td&gt;&lt;td align="left"&gt;%&lt;/td&gt;&lt;/tr&gt;&lt;tr valign="bottom"&gt;&lt;td align="left"&gt;Sector Indices&lt;/td&gt;&lt;td align="left"&gt;&amp;nbsp;&lt;/td&gt;&lt;td align="left"&gt;&amp;nbsp;&lt;/td&gt;&lt;td align="left"&gt;&amp;nbsp;&lt;/td&gt;&lt;td align="left"&gt;&amp;nbsp;&lt;/td&gt;&lt;/tr&gt;&lt;tr valign="bottom"&gt;&lt;td align="left" style="border-bottom-color: rgb(0, 0, 0); border-bottom-width: 1px; border-bottom-style: solid;"&gt;("Sector ETFs")&lt;/td&gt;&lt;td align="right" style="border-bottom-color: rgb(0, 0, 0); border-bottom-width: 1px; border-bottom-style: solid;"&gt;12&lt;/td&gt;&lt;td align="left" style="border-bottom-color: rgb(0, 0, 0); border-bottom-width: 1px; border-bottom-style: solid;"&gt;%&lt;/td&gt;&lt;td align="right" style="border-bottom-color: rgb(0, 0, 0); border-bottom-width: 1px; border-bottom-style: solid;"&gt;2-22&lt;/td&gt;&lt;td align="left" style="border-bottom-color: rgb(0, 0, 0); border-bottom-width: 1px; border-bottom-style: solid;"&gt;%&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;&lt;br/&gt;&lt;br/&gt;AIP may reallocate net assets among the various ETFs as market conditions warrant and may allocate portions of the Portfolio to ETFs that track equity, fixed income and sector indices other than those listed above.&lt;br/&gt;&lt;br/&gt;The ETFs represent a variety of asset categories and investment styles. The Equity ETFs are based on indices comprised of the common stock of U.S. and non-U.S. issuers whose fundamentals appeal to growth and value-oriented investors. The Fixed Income ETFs are based on indices comprised of fixed income securities of U.S. and non-U.S. issuers, corporate, mortgage-backed and government securities, investment grade securities, and securities rated below investment grade (commonly known as "junk bonds"). The Sector ETFs are based on indices comprised of real estate investment trusts ("REITs") and natural resource-related stocks.&lt;br/&gt;&lt;br/&gt;In its selection of investments for the Portfolio, AIP seeks ETFs that are representative of the desired asset class and whose underlying fundamentals appear to have the potential for above-average long-term performance. These may include ETFs that are expected to show above-average growth over the long-term as well as those that appear to AIP to be undervalued.&lt;br/&gt;&lt;br/&gt;The Portfolio may sell or reduce its position in an ETF when, in AIP's opinion, the macroeconomic outlook changes, valuation issues arise, the Portfolio needs to be rebalanced, or there is better opportunity elsewhere.&lt;br/&gt;&lt;br/&gt;The Portfolio's other subadvisor, Milliman, is responsible for executing the volatility management strategy. Volatility is a statistical measurement of the magnitude of up and down fluctuations in the value of a financial instrument, index or portfolio over time. Changes in the level of market volatility may result in rapid and dramatic price swings. Milliman seeks to stabilize the volatility of the Portfolio around a predetermined target level and reduce the potential for portfolio losses during periods of significant and sustained market declines, while providing opportunity for growth during periods when markets are appreciating. The Portfolio generally targets an annualized return volatility level of 10%. While Milliman attempts to manage the Portfolio's volatility to this target, over any particular time horizon the Portfolio may experience return volatility that is higher or lower than its target return volatility.&lt;br/&gt;&lt;br/&gt;Calvert and Milliman currently anticipate that the volatility management strategy will be implemented by entering into futures contracts based on one or more stock market indices, although it is possible that other derivative instruments will be used in the future to implement the strategy. An index future is a contract to buy or sell the cash value of a specific market index at a specified price by a specified date. Milliman implements the volatility management strategy primarily through short futures positions in an attempt to hedge against changes in market volatility and declines in the value of the Portfolio's investments in ETFs. Milliman seeks to stabilize volatility in the Portfolio over time at the target level by continuously monitoring and forecasting volatility in the markets utilizing a proprietary model, and adjusting the Portfolio's futures positions in response to specific changes in the market and the Portfolio. To the extent that the volatility management strategy realizes gains, the Portfolio may use these gains to further invest in ETFs in an effort to increase long-term returns.&lt;br/&gt;&lt;br/&gt;Futures contracts involve the use of leverage. Amounts referred to as margin are posted to establish and maintain a position in a futures contract, but gains and losses on each futures contract are calculated based on the notional value of the futures contract, which is much larger than the margin. The notional value represents the economic exposure provided by each futures contract. Accordingly, the notional value of the Portfolio's short futures positions will generally not exceed 80% of its net assets, which is the Portfolio's maximum combined exposure to Equity ETFs and Sector ETFs. Similarly, the notional value of the Portfolio's long futures positions will generally not exceed 10% of its net assets, which is an approximation of the portion of Portfolio's net assets that will be allocated to the implementation of the volatility management strategy.&lt;br/&gt;&lt;br/&gt;The Portfolio may, without limitation, invest in lower risk assets such as cash or short-term fixed-income securities instead of riskier assets such as equity and fixed-income ETFs and derivatives. The Fund also may engage in active and frequent trading of ETFs and derivatives to achieve its primary investment objective.</rr:StrategyNarrativeTextBlock>
  <rr:ExpenseExampleYear01 decimals="INF" contextRef="Duration_01May2012_30Apr2013S000040492_MemberC000125703_Member" unitRef="USD">99</rr:ExpenseExampleYear01>
  <rr:ExpenseExampleYear03 decimals="INF" contextRef="Duration_01May2012_30Apr2013S000040492_MemberC000125703_Member" unitRef="USD">467</rr:ExpenseExampleYear03>
  <rr:ExpenseExampleNoRedemptionYear01 decimals="INF" contextRef="Duration_01May2012_30Apr2013S000010995_MemberC000030372_MemberClassF_Member" unitRef="USD">98</rr:ExpenseExampleNoRedemptionYear01>
  <rr:ExpenseExampleNoRedemptionYear03 decimals="INF" contextRef="Duration_01May2012_30Apr2013S000010995_MemberC000030372_MemberClassF_Member" unitRef="USD">314</rr:ExpenseExampleNoRedemptionYear03>
  <rr:ExpenseExampleNoRedemptionYear05 decimals="INF" contextRef="Duration_01May2012_30Apr2013S000010995_MemberC000030372_MemberClassF_Member" unitRef="USD">549</rr:ExpenseExampleNoRedemptionYear05>
  <rr:ExpenseExampleNoRedemptionYear10 decimals="INF" contextRef="Duration_01May2012_30Apr2013S000010995_MemberC000030372_MemberClassF_Member" unitRef="USD">1221</rr:ExpenseExampleNoRedemptionYear10>
  <rr:RiskReturnHeading contextRef="Duration_01May2012_30Apr2013S000040492_Member">&lt;b&gt;Calvert VP Volatility Managed Moderate Portfolio&lt;br/&gt;&lt;br/&gt;Class F&lt;/b&gt;</rr:RiskReturnHeading>
  <rr:ExpenseExampleNoRedemptionTableTextBlock contextRef="Duration_01May2012_30Apr2013S000010995_MemberClassF_Member">&lt;div style="display:none"&gt;~ http://www.calvert.com/role/ScheduleExpenseExampleNoRedemptionTransposedCalvertVPRussell2000SmallCapIndexPortfolioClassF column period compact * ~&lt;/div&gt;</rr:ExpenseExampleNoRedemptionTableTextBlock>
  <rr:ObjectivePrimaryTextBlock contextRef="Duration_01May2012_30Apr2013S000040492_Member">The Portfolio pursues current income and modest growth potential consistent with the preservation of capital, while seeking to manage overall portfolio volatility. This objective may be changed by the Portfolio&amp;#8217;s Board of Directors without shareholder approval.</rr:ObjectivePrimaryTextBlock>
  <rr:ShareholderFeesTableTextBlock contextRef="Duration_01May2012_30Apr2013S000010992_MemberClassF_Member">&lt;div style="display:none"&gt;~ http://www.calvert.com/role/ScheduleShareholderFeesCalvertVPSPMidCap400IndexPortfolioClassF column period compact * ~&lt;/div&gt;</rr:ShareholderFeesTableTextBlock>
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  <rr:BarChartTableTextBlock contextRef="Duration_01May2012_30Apr2013S000010992_MemberClassF_Member">&lt;div style="display:none"&gt;~ http://www.calvert.com/role/ScheduleAnnualTotalReturnsCalvertVPSPMidCap400IndexPortfolioClassFBarChart column period compact * ~&lt;/div&gt;</rr:BarChartTableTextBlock>
  <rr:FeeWaiverOrReimbursementOverAssetsDateOfTermination contextRef="Duration_01May2012_30Apr2013S000040492_Member">April 30, 2014</rr:FeeWaiverOrReimbursementOverAssetsDateOfTermination>
  <rr:PerformanceTableTextBlock contextRef="Duration_01May2012_30Apr2013S000010992_MemberClassF_Member">&lt;div style="display:none"&gt;~ http://www.calvert.com/role/ScheduleAverageAnnualTotalReturnsTransposedCalvertVPSPMidCap400IndexPortfolioClassF column period compact * ~&lt;/div&gt;</rr:PerformanceTableTextBlock>
  <rr:PerformanceOneYearOrLess contextRef="Duration_01May2012_30Apr2013S000040491_Member">Because the Portfolio has less than one full calendar year of investment operations, no performance information is presented for the Portfolio at this time.</rr:PerformanceOneYearOrLess>
  <rr:PerformanceOneYearOrLess contextRef="Duration_01May2012_30Apr2013S000040492_Member">Because the Portfolio has less than one full calendar year of investment operations, no performance information is presented for the Portfolio at this time.</rr:PerformanceOneYearOrLess>
  <rr:PerformanceNarrativeTextBlock contextRef="Duration_01May2012_30Apr2013S000040492_Member">Because the Portfolio has less than one full calendar year of investment operations, no performance information is presented for the Portfolio at this time.</rr:PerformanceNarrativeTextBlock>
  <rr:ObjectivePrimaryTextBlock contextRef="Duration_01May2012_30Apr2013S000010992_MemberClassF_Member">The Portfolio seeks investment results that correspond to the total return performance of U.S. common stocks, as represented by the S&amp;amp;P MidCap 400 Index. This objective may be changed by the Portfolio&amp;#8217;s Board of Directors without shareholder approval.</rr:ObjectivePrimaryTextBlock>
  <rr:ShareholderFeesTableTextBlock contextRef="Duration_01May2012_30Apr2013S000040492_Member">&lt;div style="display:none"&gt;~ http://www.calvert.com/role/ScheduleShareholderFeesCalvertVPVolatilityManagedModeratePortfolioClassF column period compact * ~&lt;/div&gt;</rr:ShareholderFeesTableTextBlock>
  <rr:AnnualFundOperatingExpensesTableTextBlock contextRef="Duration_01May2012_30Apr2013S000040492_Member">&lt;div style="display:none"&gt;~ http://www.calvert.com/role/ScheduleAnnualFundOperatingExpensesCalvertVPVolatilityManagedModeratePortfolioClassF column period compact * ~&lt;/div&gt;</rr:AnnualFundOperatingExpensesTableTextBlock>
  <rr:MaximumSalesChargeImposedOnPurchasesOverOfferingPrice decimals="4" contextRef="Duration_01May2012_30Apr2013S000040491_MemberC000125702_Member" unitRef="pure">0</rr:MaximumSalesChargeImposedOnPurchasesOverOfferingPrice>
  <rr:MaximumDeferredSalesChargeOverOfferingPrice decimals="4" contextRef="Duration_01May2012_30Apr2013S000040491_MemberC000125702_Member" unitRef="pure">0</rr:MaximumDeferredSalesChargeOverOfferingPrice>
  <rr:ExpenseExampleNoRedemptionYear01 decimals="INF" contextRef="Duration_01May2012_30Apr2013S000040492_MemberC000125703_Member" unitRef="USD">99</rr:ExpenseExampleNoRedemptionYear01>
  <rr:ExpenseExampleNoRedemptionYear03 decimals="INF" contextRef="Duration_01May2012_30Apr2013S000040492_MemberC000125703_Member" unitRef="USD">467</rr:ExpenseExampleNoRedemptionYear03>
  <rr:ManagementFeesOverAssets decimals="4" contextRef="Duration_01May2012_30Apr2013S000040491_MemberC000125702_Member" unitRef="pure">0.0052</rr:ManagementFeesOverAssets>
  <rr:DistributionAndService12b1FeesOverAssets decimals="4" contextRef="Duration_01May2012_30Apr2013S000040491_MemberC000125702_Member" unitRef="pure">0.0025</rr:DistributionAndService12b1FeesOverAssets>
  <rr:OtherExpensesOverAssets id="Item_12" decimals="4" contextRef="Duration_01May2012_30Apr2013S000040491_MemberC000125702_Member" unitRef="pure">0.008</rr:OtherExpensesOverAssets>
  <rr:StrategyHeading contextRef="Duration_01May2012_30Apr2013S000010992_MemberClassF_Member">&lt;b&gt;INVESTMENTS, RISKS AND PERFORMANCE&lt;br/&gt;&lt;br/&gt;Principal Investment Strategies&lt;/b&gt;</rr:StrategyHeading>
  <rr:AcquiredFundFeesAndExpensesOverAssets id="Item_13" decimals="4" contextRef="Duration_01May2012_30Apr2013S000040491_MemberC000125702_Member" unitRef="pure">0.0014</rr:AcquiredFundFeesAndExpensesOverAssets>
  <rr:ExpensesOverAssets decimals="4" contextRef="Duration_01May2012_30Apr2013S000040491_MemberC000125702_Member" unitRef="pure">0.0171</rr:ExpensesOverAssets>
  <rr:FeeWaiverOrReimbursementOverAssets id="Item_14" decimals="4" contextRef="Duration_01May2012_30Apr2013S000040491_MemberC000125702_Member" unitRef="pure">-0.0074</rr:FeeWaiverOrReimbursementOverAssets>
  <rr:NetExpensesOverAssets decimals="4" contextRef="Duration_01May2012_30Apr2013S000040491_MemberC000125702_Member" unitRef="pure">0.0097</rr:NetExpensesOverAssets>
  <rr:ExpenseExampleWithRedemptionTableTextBlock contextRef="Duration_01May2012_30Apr2013S000040492_Member">&lt;div style="display:none"&gt;~ http://www.calvert.com/role/ScheduleExpenseExampleTransposedCalvertVPVolatilityManagedModeratePortfolioClassF column period compact * ~&lt;/div&gt;</rr:ExpenseExampleWithRedemptionTableTextBlock>
  <rr:ExpenseExampleNoRedemptionTableTextBlock contextRef="Duration_01May2012_30Apr2013S000040492_Member">&lt;div style="display:none"&gt;~ http://www.calvert.com/role/ScheduleExpenseExampleNoRedemptionTransposedCalvertVPVolatilityManagedModeratePortfolioClassF column period compact * ~&lt;/div&gt;</rr:ExpenseExampleNoRedemptionTableTextBlock>
  <rr:ExpenseExampleYear01 decimals="INF" contextRef="Duration_01May2012_30Apr2013S000040491_MemberC000125702_Member" unitRef="USD">99</rr:ExpenseExampleYear01>
  <rr:ExpenseExampleYear03 decimals="INF" contextRef="Duration_01May2012_30Apr2013S000040491_MemberC000125702_Member" unitRef="USD">467</rr:ExpenseExampleYear03>
  <rr:ExpenseExampleNoRedemptionYear01 decimals="INF" contextRef="Duration_01May2012_30Apr2013S000040491_MemberC000125702_Member" unitRef="USD">99</rr:ExpenseExampleNoRedemptionYear01>
  <rr:ExpenseExampleNoRedemptionYear03 decimals="INF" contextRef="Duration_01May2012_30Apr2013S000040491_MemberC000125702_Member" unitRef="USD">467</rr:ExpenseExampleNoRedemptionYear03>
  <rr:ShareholderFeesTableTextBlock contextRef="Duration_01May2012_30Apr2013S000040491_Member">&lt;div style="display:none"&gt;~ http://www.calvert.com/role/ScheduleShareholderFeesCalvertVPVolatilityManagedModerateGrowthPortfolioClassF column period compact * ~&lt;/div&gt;</rr:ShareholderFeesTableTextBlock>
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  <rr:RiskNarrativeTextBlock contextRef="Duration_01May2012_30Apr2013S000040490_Member">Asset Allocation Risk. The Subadvisor's selection of ETFs and the allocation of Portfolio assets to those ETFs may cause the Portfolio to underperform.&lt;br/&gt;&lt;br/&gt;Management Risk. Individual investments of an ETF may not perform as expected, and the ETF's portfolio management practices may not achieve the desired result. In addition, the volatility management strategy may not achieve its desired results.&lt;br/&gt;&lt;br/&gt;Exchange-Traded Fund (ETF) Risk. An ETF seeks to track the performance of an index by holding in its portfolio shares of all the companies, or a representative sample of the companies, that are components of a particular index. The risks of investment in ETFs typically reflect the risk of the types of securities in which the ETFs invest. In addition, when the Fund invests in an ETF, shareholders of the Fund bear their proportionate share of the ETF's fees and expenses as well as their share of the Fund's fees and expenses.&lt;br/&gt;&lt;br/&gt;Active Trading Strategy Risk. The Fund employs an active style that seeks to position the Portfolio with ETFs and derivatives that offer the greatest price appreciation while minimizing risk. This style can result in higher turnover (exceeding 100%) and may translate to higher transaction costs.&lt;br/&gt;&lt;br/&gt;&lt;b&gt;Equity Investments. &lt;/b&gt;The Portfolio shares the principal risks of the equity securities held by the underlying ETFs, including the key risks below.&lt;br/&gt;&lt;br/&gt;Stock Market Risk. The market prices of stocks held by the underlying ETFs may fall.&lt;br/&gt;&lt;br/&gt;Common Stock Risk. Although common stocks have a history of long-term growth in value, their prices fluctuate based on changes in a company's financial condition, on overall market and economic conditions, and on investors' perception of a company's well-being.&lt;br/&gt;&lt;br/&gt;Foreign Securities Risk. Investing in foreign securities involves additional risks relating to political, social, and economic developments abroad. Other risks result from differences between regulations that apply to U.S. and foreign issuers and markets, and the potential for foreign markets to be less liquid and more volatile than U.S. markets. Foreign securities include ADRs and GDRs. Unsponsored ADRs involve additional risks because U.S. reporting requirements do not apply and the issuing bank will recover shareholder distribution costs from movement of share prices and payment of dividends.&lt;br/&gt;&lt;br/&gt;Emerging Markets Risk. The risks of investing in emerging market securities are greater than those of investing in securities of developed foreign countries. These risks include volatile currency exchange rates, periods of high inflation, increased risk of default, greater social, economic and political uncertainty and instability, less governmental supervision and regulation of securities markets, weaker auditing and financial reporting standards, lack of liquidity in the markets, and the significantly smaller market capitalizations of emerging market issuers.&lt;br/&gt;&lt;br/&gt;Market Capitalization Risk. Large-cap companies may be unable to respond quickly to new competitive challenges such as changes in technology, and also may not be able to attain the high growth rate of successful smaller companies, especially during extended periods of economic expansion. Prices of small-cap and mid-cap stocks can be more volatile than those of larger, more established companies. Small-cap and mid-cap companies are more likely to have more limited product lines, fewer capital resources and less depth of management than larger companies. Prices of micro-cap securities are generally even more volatile and their markets are even less liquid relative to small-cap, mid-cap and large-cap securities.&lt;br/&gt;&lt;br/&gt;Natural Resources Risk. Natural resources have a historically low correlation to financial assets such as stocks and bonds. Correspondingly, their prices respond differently to financial market and economic conditions, although both are driven by the basic forces of supply and demand. However, because stocks and bonds are traded publicly on a secondary market, prices can quickly reflect forecasted earnings and future cash flows. Conversely, many factors may contribute to how natural resources prices respond to market events including warehousing and delivery constraints, changes in supply and demand dynamics, and a potential lack of fungibility. Other factors affecting natural resources prices include weather, agricultural production, disease, pestilence, technological developments, changes in interest rates, and domestic and foreign political and economic events and policies, including trade, fiscal, monetary and currency exchange policies. In addition, markets for commodities are likely to be volatile and there may be sharp price fluctuations even during periods when prices overall are rising.&lt;br/&gt;&lt;br/&gt;Real Estate Investing Risk. Investing in REITs exposes investors to the risks of owning real estate directly, as well as to risks that relate specifically to the way in which REITs are organized and operated. Real estate is a cyclical business, highly sensitive to general and local economic developments and characterized by intense competition and periodic overbuilding. Real estate income and values also may be greatly affected by demographic trends, such as population shifts or changing tastes and values. Government actions, such as tax increases, zoning law changes or environmental regulations, also may have a major impact on real estate. Changing interest rates and credit quality requirements also will affect the cash flow of real estate companies and their ability to meet capital needs. REITs generally invest directly in real estate (equity REITs), in mortgages secured by interests in real estate (mortgage REITs) or in some combination of the two (hybrid REITs). Operating REITs requires specialized management skills.&lt;br/&gt;&lt;br/&gt;Individual REITs may own a limited number of properties and may concentrate in a particular region or property type. REITs also must satisfy specific Internal Revenue Code requirements in order to qualify for the tax-free pass through of income and net realized gains.&lt;br/&gt;&lt;br/&gt;&lt;b&gt;Fixed-Income Investments. &lt;/b&gt;The Portfolio shares the principal risks of fixed-income securities held by the underlying ETFs, including the key risks below.&lt;br/&gt;&lt;br/&gt;Bond Market Risk. The market prices of bonds held by the underlying ETFs may fall.&lt;br/&gt;&lt;br/&gt;Credit Risk. The credit quality of fixed-income securities may deteriorate, which could lead to default or bankruptcy of the issuer where the issuer becomes unable to pay its obligations when due.&lt;br/&gt;&lt;br/&gt;Interest Rate Risk. A change in interest rates may adversely affect the value of the securities. When interest rates rise, the value of fixed-income securities will generally fall. Longer-term securities are subject to greater interest rate risk.&lt;br/&gt;&lt;br/&gt;Junk Bond Risk. Investments in junk bonds can involve a substantial risk of loss. Junk bonds are considered to be speculative with respect to the issuer's ability to pay interest and principal. These securities, which are rated below investment grade, have a higher risk of issuer default, are subject to greater price volatility than investment grade securities and may be illiquid.&lt;br/&gt;&lt;br/&gt;Mortgage-Backed and Asset-Backed Securities Risk. The value of investments in mortgage-backed and asset-backed securities is subject to interest rate risk and credit risk. These securities are also subject to the risk that borrowers will prepay the principal on their loans more quickly than expected (prepayment risk) or more slowly than expected (extension risk), which will affect the yield, average life and price of the securities. In addition, faster-than-expected prepayments may cause the Portfolio to invest the prepaid principal in lower yielding securities, and slower-than-expected prepayments may reduce the potential for the Portfolio to invest in higher yielding securities.&lt;br/&gt;&lt;br/&gt;Mortgage-Backed Security Risk (Government-Sponsored Enterprises). Debt and mortgage-backed securities issued by government-sponsored enterprises ("GSEs") such as the Federal National Mortgage Association ("FNMA") and the Federal Home Loan Mortgage Corporation ("FHLMC") are neither insured nor guaranteed by the U.S. Treasury and are not backed by the full faith and credit of the U.S. government. Such securities are only supported by the credit of the GSE. The U.S. government has provided financial support to FNMA and FHLMC, but there can be no assurance that it will support these or other GSEs in the future.&lt;br/&gt;&lt;br/&gt;&lt;b&gt;Money Market Investments. &lt;/b&gt;The Portfolio shares the principal risks of money market securities held by the underlying ETFs, including the key risk below.&lt;br/&gt;&lt;br/&gt;Money Market Risk. Yield will change in response to market interest rates; in general, as market rates go up, so will yield, and vice versa. Credit quality of the securities may deteriorate, which could lead to default or bankruptcy of the issuer where the issuer becomes unable to pay its obligations when due.&lt;br/&gt;&lt;br/&gt;&lt;b&gt;Volatility Management. &lt;/b&gt;The Portfolio shares the principal risks associated with its volatility management strategy, including the key risks below.&lt;br/&gt;&lt;br/&gt;Derivatives Risk. In general, a derivative is a financial contract whose value is based on the value of a financial asset (such as a stock, bond, or currency), a physical asset (such as gold), or a market index (such as the S&amp;amp;P 500 Index). Derivative instruments are subject to a number of risks, including the risk of changes in the market price of the underlying asset, credit risk with respect to the counterparty, and liquidity risk. The Portfolio's use of certain derivatives may also have a leveraging effect, which may increase the volatility of the Portfolio and reduce its returns.&lt;br/&gt;&lt;br/&gt;Futures Risk. Using futures may increase the Portfolio's volatility and may involve a small cash investment relative to the magnitude of risk assumed. If changes in a future's value do not correspond to changes in the value of the Portfolio's other investments, the Portfolio may not fully benefit from or could lose money on the futures position. Futures can involve risk of loss if the party who issued the future defaults on its obligation. Futures may also be less liquid and more difficult to value.&lt;br/&gt;&lt;br/&gt;Model Risk. The volatility management models may not accurately represent risk and projected performance, in which case performance may deviate from expectations. For example, market environments during which the stock market trends generally higher often experience low volatility, but the Portfolio may underperform in those market environments if the volatility management models forecast higher volatility. Conversely, market environments during which the stock market experiences sudden and sharp declines often experience high volatility, but the Portfolio may underperform in those market environments if the models forecast lower volatility.&lt;br/&gt;&lt;br/&gt;Basis Risk. There may be deviations between the derivatives used in the volatility management strategy and the elements of risk those derivatives are meant to manage, introducing basis risk. For example, a portion of the annualized return volatility that the Portfolio will experience will arise from the Portfolio's holdings of ETFs that invest in fixed-income securities, however, Milliman intends to use stock index futures contracts to implement the volatility management strategy. Accordingly, the volatility management strategy may not achieve its objective during periods when the fixed-income markets are unusually volatile.&lt;br/&gt;&lt;br/&gt;Gap Risk. Large discontinuous jumps in the market may cause the volatility management strategy to underperform.&lt;br/&gt;&lt;br/&gt;Credit Risk. The hedging strategies employed in the volatility management strategy can introduce counterparty credit risk, even though efforts are made to mitigate this risk through the use of collateral and clearing mechanisms.&lt;br/&gt;&lt;br/&gt;Leverage Risk. The volatility management strategy employs leverage to utilize capital efficiently. While losses should in no circumstance exceed the value of the hedged position, they may be large relative to the amount of capital employed.</rr:RiskNarrativeTextBlock>
  <rr:BarChartAndPerformanceTableHeading contextRef="Duration_01May2012_30Apr2013S000040490_Member">&lt;b&gt;Performance&lt;/b&gt;</rr:BarChartAndPerformanceTableHeading>
  <rr:PerformanceNarrativeTextBlock contextRef="Duration_01May2012_30Apr2013S000040490_Member">Because the Portfolio has less than one full calendar year of investment operations, no performance information is presented for the Portfolio at this time.</rr:PerformanceNarrativeTextBlock>
  <rr:FeeWaiverOrReimbursementOverAssetsDateOfTermination contextRef="Duration_01May2012_30Apr2013S000040490_Member">April 30, 2014</rr:FeeWaiverOrReimbursementOverAssetsDateOfTermination>
  <rr:PerformanceOneYearOrLess contextRef="Duration_01May2012_30Apr2013S000040490_Member">Because the Portfolio has less than one full calendar year of investment operations, no performance information is presented for the Portfolio at this time.</rr:PerformanceOneYearOrLess>
  <rr:MaximumSalesChargeImposedOnPurchasesOverOfferingPrice decimals="4" contextRef="Duration_01May2012_30Apr2013S000040490_MemberC000125701_Member" unitRef="pure">0</rr:MaximumSalesChargeImposedOnPurchasesOverOfferingPrice>
  <rr:MaximumDeferredSalesChargeOverOfferingPrice decimals="4" contextRef="Duration_01May2012_30Apr2013S000040490_MemberC000125701_Member" unitRef="pure">0</rr:MaximumDeferredSalesChargeOverOfferingPrice>
  <rr:ManagementFeesOverAssets decimals="4" contextRef="Duration_01May2012_30Apr2013S000040490_MemberC000125701_Member" unitRef="pure">0.0052</rr:ManagementFeesOverAssets>
  <rr:DistributionAndService12b1FeesOverAssets decimals="4" contextRef="Duration_01May2012_30Apr2013S000040490_MemberC000125701_Member" unitRef="pure">0.0025</rr:DistributionAndService12b1FeesOverAssets>
  <rr:OtherExpensesOverAssets id="Item_15" decimals="4" contextRef="Duration_01May2012_30Apr2013S000040490_MemberC000125701_Member" unitRef="pure">0.0035</rr:OtherExpensesOverAssets>
  <rr:AcquiredFundFeesAndExpensesOverAssets id="Item_16" decimals="4" contextRef="Duration_01May2012_30Apr2013S000040490_MemberC000125701_Member" unitRef="pure">0.0014</rr:AcquiredFundFeesAndExpensesOverAssets>
  <rr:ExpensesOverAssets decimals="4" contextRef="Duration_01May2012_30Apr2013S000040490_MemberC000125701_Member" unitRef="pure">0.0126</rr:ExpensesOverAssets>
  <rr:FeeWaiverOrReimbursementOverAssets id="Item_17" decimals="4" contextRef="Duration_01May2012_30Apr2013S000040490_MemberC000125701_Member" unitRef="pure">-0.0029</rr:FeeWaiverOrReimbursementOverAssets>
  <rr:NetExpensesOverAssets decimals="4" contextRef="Duration_01May2012_30Apr2013S000040490_MemberC000125701_Member" unitRef="pure">0.0097</rr:NetExpensesOverAssets>
  <rr:ExpenseExampleYear01 decimals="INF" contextRef="Duration_01May2012_30Apr2013S000040490_MemberC000125701_Member" unitRef="USD">99</rr:ExpenseExampleYear01>
  <rr:ExpenseExampleYear03 decimals="INF" contextRef="Duration_01May2012_30Apr2013S000040490_MemberC000125701_Member" unitRef="USD">371</rr:ExpenseExampleYear03>
  <rr:ExpenseExampleNoRedemptionYear01 decimals="INF" contextRef="Duration_01May2012_30Apr2013S000040490_MemberC000125701_Member" unitRef="USD">99</rr:ExpenseExampleNoRedemptionYear01>
  <rr:ExpenseExampleNoRedemptionYear03 decimals="INF" contextRef="Duration_01May2012_30Apr2013S000040490_MemberC000125701_Member" unitRef="USD">371</rr:ExpenseExampleNoRedemptionYear03>
  <rr:ShareholderFeesTableTextBlock contextRef="Duration_01May2012_30Apr2013S000040490_Member">&lt;div style="display:none"&gt;~ http://www.calvert.com/role/ScheduleShareholderFeesCalvertVPVolatilityManagedGrowthPortfolioClassF column period compact * ~&lt;/div&gt;</rr:ShareholderFeesTableTextBlock>
  <rr:AnnualFundOperatingExpensesTableTextBlock contextRef="Duration_01May2012_30Apr2013S000040490_Member">&lt;div style="display:none"&gt;~ http://www.calvert.com/role/ScheduleAnnualFundOperatingExpensesCalvertVPVolatilityManagedGrowthPortfolioClassF column period compact * ~&lt;/div&gt;</rr:AnnualFundOperatingExpensesTableTextBlock>
  <rr:ExpenseExampleWithRedemptionTableTextBlock contextRef="Duration_01May2012_30Apr2013S000040490_Member">&lt;div style="display:none"&gt;~ http://www.calvert.com/role/ScheduleExpenseExampleTransposedCalvertVPVolatilityManagedGrowthPortfolioClassF column period compact * ~&lt;/div&gt;</rr:ExpenseExampleWithRedemptionTableTextBlock>
  <rr:ExpenseExampleNoRedemptionTableTextBlock contextRef="Duration_01May2012_30Apr2013S000040490_Member">&lt;div style="display:none"&gt;~ http://www.calvert.com/role/ScheduleExpenseExampleNoRedemptionTransposedCalvertVPVolatilityManagedGrowthPortfolioClassF column period compact * ~&lt;/div&gt;</rr:ExpenseExampleNoRedemptionTableTextBlock>
  <rr:StrategyNarrativeTextBlock contextRef="Duration_01May2012_30Apr2013S000040490_Member">Under normal market conditions, the Portfolio will invest at least 80% of its net assets in exchange-traded funds ("ETFs") and various derivatives, such as futures contracts and options. The portion of the Portfolio that is invested in ETFs will be structured like a fund-of-funds. An ETF is a type of investment company whose investment objective typically is to match the returns of a particular market index, and which generally invests in a broad sample of the securities comprising the particular index. ETFs are traded on a securities exchange at prices quoted by the exchange throughout its trading day. The Portfolio seeks to achieve its objectives by investing in ETFs representing a broad range of asset classes and employing derivatives to manage overall portfolio volatility. Ameritas Investment Partners, Inc. ("AIP"), one of the Portfolio's subadvisors, is responsible for selecting the ETFs in which the Portfolio invests. Milliman Financial Risk Management LLC ("Milliman"), the Portfolio's other subadvi-sor, is responsible for executing the Portfolio's volatility management strategy described below.&lt;br/&gt;&lt;br/&gt;The Portfolio intends to invest in ETFs and trade futures contracts that provide exposure to a variety of indices, including but not limited to those shown below, and will vary its exposure based on market conditions:&lt;br/&gt;&lt;br/&gt;Fixed Income Indices and Related Components&lt;ul type="square"&gt;&lt;li style="margin-left:-20px"&gt;Barclays U.S. Aggregate Bond Index&lt;/li&gt;&lt;li style="margin-left:-20px"&gt;Barclays U.S. Aggregate Float Adjusted Index&lt;/li&gt;&lt;li style="margin-left:-20px"&gt;Barclays U.S. Treasury 20+ Year Index&lt;/li&gt;&lt;li style="margin-left:-20px"&gt;Barclays U.S. Treasury 7-10 Year Index&lt;/li&gt;&lt;li style="margin-left:-20px"&gt;Barclays U.S. Credit 5-10 Year Index&lt;/li&gt;&lt;li style="margin-left:-20px"&gt;Barclays U.S. Intermediate Credit Index&lt;/li&gt;&lt;li style="margin-left:-20px"&gt;Barclays U.S. Treasury Inflation Protected Securities&lt;br/&gt;(TIPS) Index&lt;/li&gt;&lt;li style="margin-left:-20px"&gt;Barclays U.S. Mortgage-Backed Securities Index&lt;/li&gt;&lt;li style="margin-left:-20px"&gt;Barclays High Yield Very Liquid Index&lt;/li&gt;&lt;li style="margin-left:-20px"&gt;iBoxx USD Liquid Investment Grade Index&lt;/li&gt;&lt;li style="margin-left:-20px"&gt;Deutsche Bank Emerging Market USD Liquid Balanced&lt;br/&gt;Index&lt;/li&gt;&lt;/ul&gt;U.S. Equity Indices and Related Components&lt;br/&gt;&lt;br/&gt;&lt;ul type="square"&gt;&lt;li style="margin-left:-20px"&gt;NASDAQ 100 Index&lt;/li&gt;&lt;li style="margin-left:-20px"&gt;Standard &amp;amp; Poor's ("S&amp;amp;P") 500 Index&lt;/li&gt;&lt;li style="margin-left:-20px"&gt;S&amp;amp;P 500 Growth Index&lt;/li&gt;&lt;li style="margin-left:-20px"&gt;S&amp;amp;P 500 Value Index&lt;/li&gt;&lt;li style="margin-left:-20px"&gt;S&amp;amp;P MidCap 400 Index&lt;/li&gt;&lt;li style="margin-left:-20px"&gt;S&amp;amp;P MidCap 400 Growth Index&lt;/li&gt;&lt;li style="margin-left:-20px"&gt;S&amp;amp;P MidCap 400 Value Index&lt;/li&gt;&lt;li style="margin-left:-20px"&gt;Russell 2000 Index&lt;/li&gt;&lt;/ul&gt;International Equity Indices and Related Components&lt;br/&gt;&lt;br/&gt;&lt;ul type="square"&gt;&lt;li style="margin-left:-20px"&gt;MSCI All Country World ex USA Index&lt;/li&gt;&lt;li style="margin-left:-20px"&gt;MSCI EAFE Index&lt;/li&gt;&lt;li style="margin-left:-20px"&gt;FTSE Emerging Index&lt;/li&gt;&lt;/ul&gt;Sector Indices and Related Components&lt;br/&gt;&lt;br/&gt;&lt;ul type="square"&gt;&lt;li style="margin-left:-20px"&gt;MSCI U.S. REIT Index&lt;/li&gt;&lt;li style="margin-left:-20px"&gt;S&amp;amp;P North American Natural Resources Sector Index&lt;/li&gt;&lt;/ul&gt;AIP considers the risk and return characteristics of the various asset classes represented by the indices, and the correlation of those characteristics between the various asset classes, in determining a range of possible allocations for each asset class given prevailing market conditions. AIP then reviews the historical returns and the current holdings of the ETFs, and uses that information to select ETF weightings that are consistent with the overall portfolio volatility target. The weighting of the Portfolio's ETF investments representing U.S. and international equity indices, fixed income indices and sector indices will typically range above and below the targeted asset allocation for each such asset class as shown below.&lt;br/&gt;&lt;br/&gt;&lt;table border="0" cellspacing="0" style="width: 6in; font-size: 11pt;"&gt;&lt;tr valign="bottom"&gt;&lt;td align="left"&gt;&amp;nbsp;&lt;/td&gt;&lt;td align="right"&gt;Targeted&lt;/td&gt;&lt;td align="right"&gt;&amp;nbsp;&lt;/td&gt;&lt;td align="right"&gt;Typical Asset&lt;/td&gt;&lt;td align="left"&gt;&amp;nbsp;&lt;/td&gt;&lt;/tr&gt;&lt;tr valign="bottom"&gt;&lt;td align="left"&gt;&amp;nbsp;&lt;/td&gt;&lt;td align="right"&gt;Asset Allocation&lt;/td&gt;&lt;td align="right"&gt;&amp;nbsp;&lt;/td&gt;&lt;td align="right"&gt;Allocation Range&lt;/td&gt;&lt;td align="left"&gt;&amp;nbsp;&lt;/td&gt;&lt;/tr&gt;&lt;tr valign="bottom"&gt;&lt;td align="left" style="border-bottom-color: rgb(0, 0, 0); border-bottom-width: 1px; border-bottom-style: solid;"&gt;ETFs that track:&lt;/td&gt;&lt;td align="right" style="border-bottom-color: rgb(0, 0, 0); border-bottom-width: 1px; border-bottom-style: solid;"&gt;(% of net assets)&lt;/td&gt;&lt;td align="left" style="border-bottom-color: rgb(0, 0, 0); border-bottom-width: 1px; border-bottom-style: solid;"&gt;&amp;nbsp;&lt;/td&gt;&lt;td align="right" style="border-bottom-color: rgb(0, 0, 0); border-bottom-width: 1px; border-bottom-style: solid;"&gt;(% of net assets)&lt;/td&gt;&lt;td align="left" style="border-bottom-color: rgb(0, 0, 0); border-bottom-width: 1px; border-bottom-style: solid;"&gt;&amp;nbsp;&lt;/td&gt;&lt;/tr&gt;&lt;tr valign="bottom"&gt;&lt;td align="left"&gt;U.S. &amp;amp; International&lt;/td&gt;&lt;td align="left"&gt;&amp;nbsp;&lt;/td&gt;&lt;td align="left"&gt;&amp;nbsp;&lt;/td&gt;&lt;td align="left"&gt;&amp;nbsp;&lt;/td&gt;&lt;td align="left"&gt;&amp;nbsp;&lt;/td&gt;&lt;/tr&gt;&lt;tr valign="bottom"&gt;&lt;td align="left"&gt;Equity Indices&lt;/td&gt;&lt;td align="left"&gt;&amp;nbsp;&lt;/td&gt;&lt;td align="left"&gt;&amp;nbsp;&lt;/td&gt;&lt;td align="left"&gt;&amp;nbsp;&lt;/td&gt;&lt;td align="left"&gt;&amp;nbsp;&lt;/td&gt;&lt;/tr&gt;&lt;tr valign="bottom"&gt;&lt;td align="left"&gt;("Equity ETFs")&lt;/td&gt;&lt;td align="right"&gt;66&lt;/td&gt;&lt;td align="left"&gt;%&lt;/td&gt;&lt;td align="right"&gt;56-76&lt;/td&gt;&lt;td align="left"&gt;%&lt;/td&gt;&lt;/tr&gt;&lt;tr valign="bottom"&gt;&lt;td align="left"&gt;Fixed Income Indices&lt;/td&gt;&lt;td align="left"&gt;&amp;nbsp;&lt;/td&gt;&lt;td align="left"&gt;&amp;nbsp;&lt;/td&gt;&lt;td align="left"&gt;&amp;nbsp;&lt;/td&gt;&lt;td align="left"&gt;&amp;nbsp;&lt;/td&gt;&lt;/tr&gt;&lt;tr valign="bottom"&gt;&lt;td align="left"&gt;("Fixed Income ETFs")&lt;/td&gt;&lt;td align="right"&gt;25&lt;/td&gt;&lt;td align="left"&gt;%&lt;/td&gt;&lt;td align="right"&gt;15-35&lt;/td&gt;&lt;td align="left"&gt;%&lt;/td&gt;&lt;/tr&gt;&lt;tr valign="bottom"&gt;&lt;td align="left"&gt;Sector Indices&lt;/td&gt;&lt;td align="left"&gt;&amp;nbsp;&lt;/td&gt;&lt;td align="left"&gt;&amp;nbsp;&lt;/td&gt;&lt;td align="left"&gt;&amp;nbsp;&lt;/td&gt;&lt;td align="left"&gt;&amp;nbsp;&lt;/td&gt;&lt;/tr&gt;&lt;tr valign="bottom"&gt;&lt;td align="left" style="border-bottom-color: rgb(0, 0, 0); border-bottom-width: 1px; border-bottom-style: solid;"&gt;("Sector ETFs")&lt;/td&gt;&lt;td align="right" style="border-bottom-color: rgb(0, 0, 0); border-bottom-width: 1px; border-bottom-style: solid;"&gt;9&lt;/td&gt;&lt;td align="left" style="border-bottom-color: rgb(0, 0, 0); border-bottom-width: 1px; border-bottom-style: solid;"&gt;%&lt;/td&gt;&lt;td align="right" style="border-bottom-color: rgb(0, 0, 0); border-bottom-width: 1px; border-bottom-style: solid;"&gt;0-19&lt;/td&gt;&lt;td align="left" style="border-bottom-color: rgb(0, 0, 0); border-bottom-width: 1px; border-bottom-style: solid;"&gt;%&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;&lt;br/&gt;&lt;br/&gt;AIP may reallocate net assets among the various ETFs as market conditions warrant and may allocate portions of the Portfolio to ETFs that track equity, fixed income and sector indices other than those listed above.&lt;br/&gt;&lt;br/&gt;The ETFs represent a variety of asset categories and investment styles. The Equity ETFs are based on indices comprised of the common stock of U.S. and non-U.S. issuers whose fundamentals appeal to growth and value-oriented investors. The Fixed Income ETFs are based on indices comprised of fixed income securities of U.S. and non-U.S. issuers, corporate, mortgage-backed and government securities, investment grade securities, and securities rated below investment grade (commonly known as "junk bonds"). The Sector ETFs are based on indices comprised of real estate investment trusts ("REITs") and natural resource-related stocks.&lt;br/&gt;&lt;br/&gt;In its selection of investments for the Portfolio, AIP seeks ETFs that are representative of the desired asset class and whose underlying fundamentals appear to have the potential for above-average long-term performance. These may include ETFs that are expected to show above-average growth over the long-term as well as those that appear to AIP to be undervalued.&lt;br/&gt;&lt;br/&gt;The Portfolio may sell or reduce its position in an ETF when, in AIP's opinion, the macroeconomic outlook changes, valuation issues arise, the Portfolio needs to be rebalanced, or there is better opportunity elsewhere.&lt;br/&gt;&lt;br/&gt;The Portfolio's other subadvisor, Milliman, is responsible for executing the volatility management strategy. Volatility is a statistical measurement of the magnitude of up and down fluctuations in the value of a financial instrument, index or portfolio over time. Changes in the level of market volatility may result in rapid and dramatic price swings. Milliman seeks to stabilize the volatility of the Portfolio around a predetermined target level and reduce the potential for portfolio losses during periods of significant and sustained market declines, while providing opportunity for growth during periods when markets are appreciating. The Portfolio generally targets an annualized return volatility level of 12%. While Milliman attempts to manage the Portfolio's volatility to this target, over any particular time horizon the Portfolio may experience return volatility that is higher or lower than its target return volatility.&lt;br/&gt;&lt;br/&gt;Calvert and Milliman currently anticipate that the volatility management strategy will be implemented by entering into futures contracts based on one or more stock market indices, although it is possible that other derivative instruments will be used in the future to implement the strategy. An index future is a contract to buy or sell the cash value of a specific market index at a specified price by a specified date. Milliman implements the volatility management strategy primarily through short futures positions in an attempt to hedge against changes in market volatility and declines in the value of the Portfolio's investments in ETFs. Milliman seeks to stabilize volatility in the Portfolio over time at the target level by continuously monitoring and forecasting volatility in the markets utilizing a proprietary model, and adjusting the Portfolio's futures positions in response to specific changes in the market and the Portfolio. To the extent that the volatility management strategy realizes gains, the Portfolio may use these gains to further invest in ETFs in an effort to increase long-term returns.&lt;br/&gt;&lt;br/&gt;Futures contracts involve the use of leverage. Amounts referred to as margin are posted to establish and maintain a position in a futures contract, but gains and losses on each futures contract are calculated based on the notional value of the futures contract, which is much larger than the margin. The notional value represents the economic exposure provided by each futures contract. Accordingly, the notional value of the Portfolio's short futures positions will generally not exceed 95% of its net assets, which is the Portfolio's maximum combined exposure to Equity ETFs and Sector ETFs. Similarly, the notional value of the Portfolio's long futures positions will generally not exceed 10% of its net assets, which is an approximation of the portion of Portfolio's net assets that will be allocated to the implementation of the volatility management strategy.&lt;br/&gt;&lt;br/&gt;The Portfolio may, without limitation, invest in lower risk assets such as cash or short-term fixed-income securities instead of riskier assets such as equity and fixed-income ETFs and derivatives. The Fund also may engage in active and frequent trading of ETFs and derivatives to achieve its primary investment objective.</rr:StrategyNarrativeTextBlock>
  <rr:ExpenseExampleNoRedemptionYear01 decimals="INF" contextRef="Duration_01May2012_30Apr2013S000010996_MemberC000055530_MemberClassF_Member" unitRef="USD">121</rr:ExpenseExampleNoRedemptionYear01>
  <rr:ExpenseExampleNoRedemptionYear03 decimals="INF" contextRef="Duration_01May2012_30Apr2013S000010996_MemberC000055530_MemberClassF_Member" unitRef="USD">391</rr:ExpenseExampleNoRedemptionYear03>
  <rr:ExpenseExampleNoRedemptionYear05 decimals="INF" contextRef="Duration_01May2012_30Apr2013S000010996_MemberC000055530_MemberClassF_Member" unitRef="USD">681</rr:ExpenseExampleNoRedemptionYear05>
  <rr:ExpenseExampleNoRedemptionYear10 decimals="INF" contextRef="Duration_01May2012_30Apr2013S000010996_MemberC000055530_MemberClassF_Member" unitRef="USD">1506</rr:ExpenseExampleNoRedemptionYear10>
  <rr:ExpenseExampleNoRedemptionTableTextBlock contextRef="Duration_01May2012_30Apr2013S000010996_MemberClassF_Member">&lt;div style="display:none"&gt;~ http://www.calvert.com/role/ScheduleExpenseExampleNoRedemptionTransposedCalvertVPEAFEInternationalIndexPortfolioClassF column period compact * ~&lt;/div&gt;</rr:ExpenseExampleNoRedemptionTableTextBlock>
  <rr:ObjectiveHeading contextRef="Duration_01May2012_30Apr2013S000040491_Member">INVESTMENT OBJECTIVE</rr:ObjectiveHeading>
  <rr:OtherExpensesNewFundBasedOnEstimates contextRef="Duration_01May2012_30Apr2013S000040492_Member">Based on estimated amounts for the current fiscal year.</rr:OtherExpensesNewFundBasedOnEstimates>
  <rr:AcquiredFundFeesAndExpensesBasedOnEstimates contextRef="Duration_01May2012_30Apr2013S000040492_Member">Based on estimated amounts for the current fiscal year.</rr:AcquiredFundFeesAndExpensesBasedOnEstimates>
  <rr:StrategyHeading contextRef="Duration_01May2012_30Apr2013S000010996_MemberClassI_Member">&lt;b&gt;INVESTMENTS, RISKS AND PERFORMANCE&lt;br/&gt;&lt;br/&gt;Principal Investment Strategies&lt;/b&gt;</rr:StrategyHeading>
  <rr:StrategyNarrativeTextBlock contextRef="Duration_01May2012_30Apr2013S000010996_MemberClassI_Member">The Portfolio seeks to substantially replicate the total return of the securities comprising the MSCI EAFE Index, taking into consideration redemptions, sales of additional shares, and other adjustments described below. The MSCI EAFE Index is an unmanaged index of common stocks comprised of 909 securities as of December 31, 2012, taken from the 22 MSCI country indices in developed foreign countries outside of North America that aims to include the top 85% of market capitalization in each industry group in each country. As of December 31, 2012, the market capitalization of the MSCI EAFE Index companies ranged from $1 billion to $225.9 billion with a weighted median level of $35.6 billion and a weighted average level of $58.2 billion. The MSCI EAFE Index is capitalization-weighted, meaning that companies with larger market capitalizations will contribute more to the Index's value than companies with smaller market capitalizations.&lt;br/&gt;&lt;br/&gt;The Portfolio will invest primarily in common stocks of the companies that comprise the MSCI EAFE Index. The Portfolio may also invest in EAFE iShares&lt;sup&gt;&amp;#174;&lt;/sup&gt;. EAFE iShares&lt;sup&gt;&amp;#174; &lt;/sup&gt;are units of beneficial interest in a unit investment trust, representing proportionate undivided interests in a portfolio of securities in substantially the same weighting as the common stocks that comprise the MSCI EAFE Index. Derivatives such as options and futures, and options on such futures, that provide exposure to the stocks in the MSCI EAFE Index may also be held by the Portfolio incidental to its main investment strategy. The Portfolio may also sell covered calls on futures contracts or individual securities held in the Portfolio.&lt;br/&gt;&lt;br/&gt;The investments described in this paragraph are considered to have economic characteristics that are the same as those in the MSCI EAFE Index. The Portfolio may also add new investments in the future that it believes provide effective economic exposure to the MSCI EAFE Index.&lt;br/&gt;&lt;br/&gt;The Portfolio may not hold investments in common stocks of all of the companies in the MSCI EAFE Index. In that case, the Portfolio will typically choose to hold all of the stocks that make up the largest portion of the MSCI EAFE Index's market capitalization value in approximately the same proportion as the Index. When choosing the smaller market capitalization stocks in the MSCI EAFE Index, the Portfolio will attempt to select a sampling of stocks that will match the industry and risk characteristics of these companies without buying all of those stocks. This approach attempts to maximize liquidity while minimizing costs. At such time as the Subadvisor believes the Portfolio has achieved sufficient size, the Subadvisor may attempt to fully replicate the Index. Full replication would be achieved when the Portfolio holds all of the securities in the Index in, as nearly as practicable, identical weightings as the Index.&lt;br/&gt;&lt;br/&gt;Under normal circumstances, the Portfolio will invest at least 80% of its net assets in investments (described above) with economic characteristics similar to the stocks represented in the MSCI EAFE Index. The Portfolio will provide shareholders with at least 60 days' notice before changing this 80% policy. While not required, the Portfolio generally will sell securities that the Index manager removes from the Index. Although the Subadvisor will attempt to invest as much of the Portfolio's assets as is practical in stocks included among the MSCI EAFE Index and futures contracts and options relating thereto under normal market conditions, a portion of the Portfolio may be invested in money market instruments pending investment or to meet redemption requests or other needs for liquid assets.&lt;br/&gt;&lt;br/&gt;The Portfolio may invest in American Depositary Receipts ("ADRs"), which may be sponsored or unsponsored.</rr:StrategyNarrativeTextBlock>
  <rr:RiskHeading contextRef="Duration_01May2012_30Apr2013S000010996_MemberClassI_Member">&lt;b&gt;Principal Risks&lt;/b&gt;</rr:RiskHeading>
  <rr:RiskNarrativeTextBlock contextRef="Duration_01May2012_30Apr2013S000010996_MemberClassI_Member">You could lose money on your investment in the Portfolio, or the Portfolio could underperform, because of the risks described below. An investment in the Portfolio is not a bank deposit and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.&lt;br/&gt;&lt;br/&gt;Management Risk. Individual investments of the Portfolio may not perform as expected, and the portfolio management practices may not achieve the desired result.&lt;br/&gt;&lt;br/&gt;Stock Market Risk. The market prices of stocks held by the Portfolio may fall.&lt;br/&gt;&lt;br/&gt;Index Tracking Risk. An index fund has operating expenses; a market index does not. The Portfolio, while expected to track its target index as closely as possible, will not be able to match the performance of the index exactly.&lt;br/&gt;&lt;br/&gt;Common Stock Risk. Although common stocks have a history of long-term growth in value, their prices fluctuate based on changes in a company's financial condition, on overall market and economic conditions, and on investors' perception of a company's well-being.&lt;br/&gt;&lt;br/&gt;Large-Cap Company Risk. Large-cap companies may be unable to respond quickly to new competitive challenges such as changes in technology, and also may not be able to attain the high growth rate of successful smaller companies, especially during extended periods of economic expansion.&lt;br/&gt;&lt;br/&gt;Foreign Securities Risk. Investing in foreign securities involves additional risks relating to political, social, and economic developments abroad. Other risks result from the differences between the regulations to which U.S. and foreign issuers and markets are subject, and the potential for foreign markets to be less liquid and more volatile than U.S. markets. Foreign securities include ADRs. Unsponsored ADRs involve additional risks because U.S. reporting requirements do not apply and the issuing bank will recover shareholder distribution costs from movement of share prices and payment of dividends.&lt;br/&gt;&lt;br/&gt;Foreign Currency Risk. Securities that trade or are denominated in currencies other than the U.S. dollar may be adversely affected by fluctuations in currency exchange rates. When the U.S. dollar strengthens relative to a foreign currency, the U.S. dollar value of an investment denominated in that currency will typically fall. ADRs indirectly bear currency risk because they represent an interest in securities that are not denominated in U.S. dollars.&lt;br/&gt;&lt;br/&gt;Foreign Currency Transactions Risk. Transactions in foreign currency in connection with the purchase and sale of investments in foreign markets may result in foreign currency exposure and the potential for losses due to fluctuations in currency exchange rates. These losses may occur without regard to the quality or performance of the investment itself. Foreign currency transactions may also prevent the Portfolio from realizing profits on favorable movements in exchange rates.&lt;br/&gt;&lt;br/&gt;Risk of EAFE iShares&lt;sup&gt;&amp;#174;&lt;/sup&gt;. EAFE iShares&lt;sup&gt;&amp;#174; &lt;/sup&gt;are subject to the risk that the stock prices of the companies in the MSCI EAFE Index may fall. An investment in EAFE iShares&lt;sup&gt;&amp;#174; &lt;/sup&gt;may not replicate exactly the performance of the MSCI EAFE Index for any number of reasons. Shareholders of the Portfolio bear their proportionate share of the operating expenses of the underlying investment as well as their share of the Portfolio's fees and expenses.&lt;br/&gt;&lt;br/&gt;Stock Index Futures and Options Risk. Using stock index futures and options may increase the Portfolio's volatility and may involve a small cash investment relative to the magnitude of risk assumed. If changes in a derivative's value do not correspond to changes in the value of the Portfolio's other investments, the Portfolio may not fully benefit from or could lose money on the derivative position. Derivatives can involve risk of loss if the party who issued the derivative defaults on its obligation. Derivatives may also be less liquid and more difficult to value.</rr:RiskNarrativeTextBlock>
  <rr:BarChartAndPerformanceTableHeading contextRef="Duration_01May2012_30Apr2013S000010996_MemberClassI_Member">&lt;b&gt;Performance&lt;/b&gt;</rr:BarChartAndPerformanceTableHeading>
  <rr:PerformanceNarrativeTextBlock contextRef="Duration_01May2012_30Apr2013S000010996_MemberClassI_Member">The following bar chart and table show the Portfolio&amp;#8217;s annual returns and its long-term performance, which give some indication of the risks of investing in the Portfolio. The bar chart shows how the performance has varied from year to year. The table compares the Portfolio&amp;#8217;s performance over time with that of a benchmark index and a peer average.&lt;br/&gt;&lt;br/&gt;The Portfolio&amp;#8217;s past performance does not necessarily indicate how the Portfolio will perform in the future. For updated performance information, visit www.calvert.com.&lt;br/&gt;&lt;br/&gt;The returns shown do not reflect fees and charges imposed under the variable annuity contracts and life insurance policies through which an investment may be made. If those fees and charges were included, they would reduce these returns.</rr:PerformanceNarrativeTextBlock>
  <rr:BarChartHeading contextRef="Duration_01May2012_30Apr2013S000010996_MemberClassI_Member">&lt;b&gt;Calendar Year Total Returns&lt;/b&gt;</rr:BarChartHeading>
  <rr:AnnualReturn2003 decimals="4" contextRef="Duration_01May2012_30Apr2013S000010996_MemberC000030373_MemberClassI_Member" unitRef="pure">0.3283</rr:AnnualReturn2003>
  <rr:AnnualReturn2004 decimals="4" contextRef="Duration_01May2012_30Apr2013S000010996_MemberC000030373_MemberClassI_Member" unitRef="pure">0.1799</rr:AnnualReturn2004>
  <rr:AnnualReturn2005 decimals="4" contextRef="Duration_01May2012_30Apr2013S000010996_MemberC000030373_MemberClassI_Member" unitRef="pure">0.1257</rr:AnnualReturn2005>
  <rr:AnnualReturn2006 decimals="4" contextRef="Duration_01May2012_30Apr2013S000010996_MemberC000030373_MemberClassI_Member" unitRef="pure">0.2556</rr:AnnualReturn2006>
  <rr:AnnualReturn2007 decimals="4" contextRef="Duration_01May2012_30Apr2013S000010996_MemberC000030373_MemberClassI_Member" unitRef="pure">0.101</rr:AnnualReturn2007>
  <rr:AnnualReturn2008 decimals="4" contextRef="Duration_01May2012_30Apr2013S000010996_MemberC000030373_MemberClassI_Member" unitRef="pure">-0.4268</rr:AnnualReturn2008>
  <rr:AverageAnnualReturnSinceInception decimals="4" contextRef="Duration_01May2012_30Apr2013S000015009_MemberC000040850_Member" unitRef="pure">0.0094</rr:AverageAnnualReturnSinceInception>
  <rr:AverageAnnualReturnSinceInception decimals="4" contextRef="Duration_01May2012_30Apr2013S000015009_MemberSAndPFiveHundredIndex_Member" unitRef="pure">0.0221</rr:AverageAnnualReturnSinceInception>
  <rr:AverageAnnualReturnSinceInception decimals="4" contextRef="Duration_01May2012_30Apr2013S000015009_MemberNaturalResourcesCompositeBenchmark_Member" unitRef="pure">0.0086</rr:AverageAnnualReturnSinceInception>
  <rr:AverageAnnualReturnSinceInception id="Item_18" xsi:nil="true" contextRef="Duration_01May2012_30Apr2013S000015009_MemberLipperVaNaturalResourcesFundsAverage_Member" unitRef="pure" />
  <rr:AnnualReturn2009 decimals="4" contextRef="Duration_01May2012_30Apr2013S000010996_MemberC000030373_MemberClassI_Member" unitRef="pure">0.2785</rr:AnnualReturn2009>
  <rr:AnnualReturn2010 decimals="4" contextRef="Duration_01May2012_30Apr2013S000010996_MemberC000030373_MemberClassI_Member" unitRef="pure">0.0671</rr:AnnualReturn2010>
  <rr:AnnualReturn2011 decimals="4" contextRef="Duration_01May2012_30Apr2013S000010996_MemberC000030373_MemberClassI_Member" unitRef="pure">-0.1271</rr:AnnualReturn2011>
  <rr:AnnualReturn2012 decimals="4" contextRef="Duration_01May2012_30Apr2013S000010996_MemberC000030373_MemberClassI_Member" unitRef="pure">0.1732</rr:AnnualReturn2012>
  <rr:BarChartClosingTextBlock contextRef="Duration_01May2012_30Apr2013S000010996_MemberClassI_Member">&lt;table style="width: 6in; " border="0" cellspacing="0"&gt; &lt;tr valign="bottom"&gt; &lt;td align="left"&gt;&lt;/td&gt; &lt;td align="right"&gt;&lt;b&gt;Quarter&lt;/b&gt;&lt;/td&gt; &lt;td align="right"&gt;&lt;b&gt;Total&lt;/b&gt;&lt;/td&gt; &lt;td align="left"&gt;&amp;nbsp;&lt;/td&gt;&lt;/tr&gt; &lt;tr valign="bottom"&gt; &lt;td align="left"&gt;&amp;nbsp;&lt;/td&gt; &lt;td style="BORDER-BOTTOM: #000000 1px solid; TEXT-INDENT: 2.834pt" align="right"&gt;&lt;b&gt;Ended&lt;/b&gt;&lt;/td&gt; &lt;td style="BORDER-BOTTOM: #000000 1px solid; TEXT-INDENT: 3.932pt" align="right"&gt;&lt;b&gt;Return&lt;/b&gt;&lt;/td&gt; &lt;td style="BORDER-BOTTOM: #000000 1px solid" align="left"&gt;&amp;nbsp;&lt;/td&gt;&lt;/tr&gt; &lt;tr&gt; &lt;td colspan="4"&gt;&amp;nbsp;&lt;/td&gt;&lt;/tr&gt; &lt;tr valign="bottom"&gt; &lt;td align="left"&gt;Best Quarter (of periods shown)&lt;/td&gt; &lt;td style="TEXT-INDENT: 4.283pt" align="right"&gt;6/30/09&lt;/td&gt; &lt;td align="right"&gt;24.67&lt;/td&gt; &lt;td align="left"&gt;%&lt;/td&gt;&lt;/tr&gt; &lt;tr valign="bottom"&gt; &lt;td align="left"&gt;Worst Quarter (of periods shown)&lt;/td&gt; &lt;td style="TEXT-INDENT: 4.283pt" align="right"&gt;9/30/11&lt;/td&gt; &lt;td align="right"&gt;-20.13&lt;/td&gt; &lt;td align="left"&gt;%&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;</rr:BarChartClosingTextBlock>
  <rr:PerformanceTableHeading contextRef="Duration_01May2012_30Apr2013S000010996_MemberClassI_Member">&lt;b&gt;Average Annual Total Returns&lt;br/&gt;(as of 12/31/12)&lt;/b&gt;</rr:PerformanceTableHeading>
  <rr:AverageAnnualReturnYear01 decimals="4" contextRef="Duration_01May2012_30Apr2013S000010996_MemberC000030373_MemberClassI_Member" unitRef="pure">0.1732</rr:AverageAnnualReturnYear01>
  <rr:AverageAnnualReturnYear01 decimals="4" contextRef="Duration_01May2012_30Apr2013S000010996_MemberClassI_MemberMsciTwentyHundredIndex_Member" unitRef="pure">0.179</rr:AverageAnnualReturnYear01>
  <rr:AverageAnnualReturnYear01 decimals="4" contextRef="Duration_01May2012_30Apr2013S000010996_MemberClassI_MemberLipperVaInternationalCoreFundsAverage_Member" unitRef="pure">0.1756</rr:AverageAnnualReturnYear01>
  <rr:AverageAnnualReturnYear05 decimals="4" contextRef="Duration_01May2012_30Apr2013S000010996_MemberC000030373_MemberClassI_Member" unitRef="pure">-0.0434</rr:AverageAnnualReturnYear05>
  <rr:AverageAnnualReturnYear05 decimals="4" contextRef="Duration_01May2012_30Apr2013S000010996_MemberClassI_MemberMsciTwentyHundredIndex_Member" unitRef="pure">-0.0321</rr:AverageAnnualReturnYear05>
  <rr:AverageAnnualReturnYear05 decimals="4" contextRef="Duration_01May2012_30Apr2013S000010996_MemberClassI_MemberLipperVaInternationalCoreFundsAverage_Member" unitRef="pure">-0.035</rr:AverageAnnualReturnYear05>
  <rr:AverageAnnualReturnYear10 decimals="4" contextRef="Duration_01May2012_30Apr2013S000010996_MemberC000030373_MemberClassI_Member" unitRef="pure">0.0692</rr:AverageAnnualReturnYear10>
  <rr:AverageAnnualReturnYear10 decimals="4" contextRef="Duration_01May2012_30Apr2013S000010996_MemberClassI_MemberMsciTwentyHundredIndex_Member" unitRef="pure">0.087</rr:AverageAnnualReturnYear10>
  <rr:AverageAnnualReturnYear10 decimals="4" contextRef="Duration_01May2012_30Apr2013S000010996_MemberClassI_MemberLipperVaInternationalCoreFundsAverage_Member" unitRef="pure">0.0775</rr:AverageAnnualReturnYear10>
  <rr:OtherExpensesNewFundBasedOnEstimates contextRef="Duration_01May2012_30Apr2013S000040490_Member">Based on estimated amounts for the current fiscal year.</rr:OtherExpensesNewFundBasedOnEstimates>
  <rr:RiskLoseMoney contextRef="Duration_01May2012_30Apr2013S000010996_MemberClassI_Member">You could lose money on your investment in the Portfolio, or the Portfolio could underperform, because of the risks described below.</rr:RiskLoseMoney>
  <rr:RiskNotInsuredDepositoryInstitution contextRef="Duration_01May2012_30Apr2013S000010996_MemberClassI_Member">An investment in the Portfolio is not a bank deposit and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.</rr:RiskNotInsuredDepositoryInstitution>
  <rr:PerformanceInformationIllustratesVariabilityOfReturns contextRef="Duration_01May2012_30Apr2013S000010996_MemberClassI_Member">The following bar chart and table show the Portfolio&amp;#8217;s annual returns and its long-term performance, which give some indication of the risks of investing in the Portfolio. The bar chart shows how the performance has varied from year to year. The table compares the Portfolio&amp;#8217;s performance over time with that of a benchmark index and a peer average.</rr:PerformanceInformationIllustratesVariabilityOfReturns>
  <rr:PerformanceAvailabilityWebSiteAddress contextRef="Duration_01May2012_30Apr2013S000010996_MemberClassI_Member">www.calvert.com</rr:PerformanceAvailabilityWebSiteAddress>
  <rr:PerformancePastDoesNotIndicateFuture contextRef="Duration_01May2012_30Apr2013S000010996_MemberClassI_Member">The Portfolio&amp;#8217;s past performance does not necessarily indicate how the Portfolio will perform in the future.</rr:PerformancePastDoesNotIndicateFuture>
  <rr:BarChartDoesNotReflectSalesLoads contextRef="Duration_01May2012_30Apr2013S000010996_MemberClassI_Member">The returns shown do not reflect fees and charges imposed under the variable annuity contracts and life insurance policies through which an investment may be made. If those fees and charges were included, they would reduce these returns.</rr:BarChartDoesNotReflectSalesLoads>
  <rr:HighestQuarterlyReturnLabel contextRef="Duration_01May2012_30Apr2013S000010996_MemberC000030373_MemberClassI_Member">Best Quarter (of periods shown)</rr:HighestQuarterlyReturnLabel>
  <rr:BarChartHighestQuarterlyReturnDate contextRef="Duration_01May2012_30Apr2013S000010996_MemberC000030373_MemberClassI_Member">2009-06-30</rr:BarChartHighestQuarterlyReturnDate>
  <rr:BarChartHighestQuarterlyReturn decimals="4" contextRef="Duration_01May2012_30Apr2013S000010996_MemberC000030373_MemberClassI_Member" unitRef="pure">0.2467</rr:BarChartHighestQuarterlyReturn>
  <rr:LowestQuarterlyReturnLabel contextRef="Duration_01May2012_30Apr2013S000010996_MemberC000030373_MemberClassI_Member">Worst Quarter (of periods shown)</rr:LowestQuarterlyReturnLabel>
  <rr:BarChartLowestQuarterlyReturnDate contextRef="Duration_01May2012_30Apr2013S000010996_MemberC000030373_MemberClassI_Member">2011-09-30</rr:BarChartLowestQuarterlyReturnDate>
  <rr:BarChartLowestQuarterlyReturn decimals="4" contextRef="Duration_01May2012_30Apr2013S000010996_MemberC000030373_MemberClassI_Member" unitRef="pure">-0.2013</rr:BarChartLowestQuarterlyReturn>
  <rr:ExpenseExampleNoRedemptionYear01 decimals="INF" contextRef="Duration_01May2012_30Apr2013S000010996_MemberC000030373_MemberClassI_Member" unitRef="USD">98</rr:ExpenseExampleNoRedemptionYear01>
  <rr:ExpenseExampleNoRedemptionYear03 decimals="INF" contextRef="Duration_01May2012_30Apr2013S000010996_MemberC000030373_MemberClassI_Member" unitRef="USD">306</rr:ExpenseExampleNoRedemptionYear03>
  <rr:ExpenseExampleNoRedemptionYear05 decimals="INF" contextRef="Duration_01May2012_30Apr2013S000010996_MemberC000030373_MemberClassI_Member" unitRef="USD">531</rr:ExpenseExampleNoRedemptionYear05>
  <rr:ExpenseExampleNoRedemptionYear10 decimals="INF" contextRef="Duration_01May2012_30Apr2013S000010996_MemberC000030373_MemberClassI_Member" unitRef="USD">1178</rr:ExpenseExampleNoRedemptionYear10>
  <rr:RiskReturnHeading contextRef="Duration_01May2012_30Apr2013S000040490_Member">&lt;b&gt;Calvert VP Volatility Managed Growth Portfolio&lt;/b&gt;&lt;br/&gt;&lt;br/&gt;&lt;b&gt;Class F&lt;/b&gt;</rr:RiskReturnHeading>
  <rr:ShareholderFeesTableTextBlock contextRef="Duration_01May2012_30Apr2013S000010996_MemberClassI_Member">&lt;div style="display:none"&gt;~ http://www.calvert.com/role/ScheduleShareholderFeesCalvertVPEAFEInternationalIndexPortfolio column period compact * ~&lt;/div&gt;</rr:ShareholderFeesTableTextBlock>
  <rr:AnnualFundOperatingExpensesTableTextBlock contextRef="Duration_01May2012_30Apr2013S000010996_MemberClassI_Member">&lt;div style="display:none"&gt;~ http://www.calvert.com/role/ScheduleAnnualFundOperatingExpensesCalvertVPEAFEInternationalIndexPortfolio column period compact * ~&lt;/div&gt;</rr:AnnualFundOperatingExpensesTableTextBlock>
  <rr:ExpenseExampleWithRedemptionTableTextBlock contextRef="Duration_01May2012_30Apr2013S000010996_MemberClassI_Member">&lt;div style="display:none"&gt;~ http://www.calvert.com/role/ScheduleExpenseExampleTransposedCalvertVPEAFEInternationalIndexPortfolio column period compact * ~&lt;/div&gt;</rr:ExpenseExampleWithRedemptionTableTextBlock>
  <rr:ExpenseExampleNoRedemptionTableTextBlock contextRef="Duration_01May2012_30Apr2013S000010996_MemberClassI_Member">&lt;div style="display:none"&gt;~ http://www.calvert.com/role/ScheduleExpenseExampleNoRedemptionTransposedCalvertVPEAFEInternationalIndexPortfolio column period compact * ~&lt;/div&gt;</rr:ExpenseExampleNoRedemptionTableTextBlock>
  <rr:BarChartTableTextBlock contextRef="Duration_01May2012_30Apr2013S000010996_MemberClassI_Member">&lt;div style="display:none"&gt;~ http://www.calvert.com/role/ScheduleAnnualTotalReturnsCalvertVPEAFEInternationalIndexPortfolioBarChart column period compact * ~&lt;/div&gt;</rr:BarChartTableTextBlock>
  <rr:PerformanceTableTextBlock contextRef="Duration_01May2012_30Apr2013S000010996_MemberClassI_Member">&lt;div style="display:none"&gt;~ http://www.calvert.com/role/ScheduleAverageAnnualTotalReturnsTransposedCalvertVPEAFEInternationalIndexPortfolio column period compact * ~&lt;/div&gt;</rr:PerformanceTableTextBlock>
  <rr:AverageAnnualReturnInceptionDate contextRef="Duration_01May2012_30Apr2013S000015009_MemberSAndPFiveHundredIndex_Member">2006-12-28</rr:AverageAnnualReturnInceptionDate>
  <rr:AverageAnnualReturnInceptionDate contextRef="Duration_01May2012_30Apr2013S000015009_MemberLipperVaNaturalResourcesFundsAverage_Member">2006-12-28</rr:AverageAnnualReturnInceptionDate>
  <rr:AverageAnnualReturnInceptionDate contextRef="Duration_01May2012_30Apr2013S000015009_MemberNaturalResourcesCompositeBenchmark_Member">2006-12-28</rr:AverageAnnualReturnInceptionDate>
  <rr:AverageAnnualReturnInceptionDate contextRef="Duration_01May2012_30Apr2013S000015005_MemberBarclaysUsTipsIndex_Member">2006-12-28</rr:AverageAnnualReturnInceptionDate>
  <rr:AverageAnnualReturnInceptionDate contextRef="Duration_01May2012_30Apr2013S000015005_MemberLipperVaInflationProtectedBondFundsAverage_Member">2006-12-28</rr:AverageAnnualReturnInceptionDate>
  <rr:AcquiredFundFeesAndExpensesBasedOnEstimates contextRef="Duration_01May2012_30Apr2013S000040490_Member">Based on estimated amounts for the current fiscal year.</rr:AcquiredFundFeesAndExpensesBasedOnEstimates>
  <rr:OtherExpensesNewFundBasedOnEstimates contextRef="Duration_01May2012_30Apr2013S000040491_Member">Based on estimated amounts for the current fiscal year.</rr:OtherExpensesNewFundBasedOnEstimates>
  <rr:AcquiredFundFeesAndExpensesBasedOnEstimates contextRef="Duration_01May2012_30Apr2013S000040491_Member">Based on estimated amounts for the current fiscal year.</rr:AcquiredFundFeesAndExpensesBasedOnEstimates>
  <link:footnoteLink xlink:type="extended" xlink:role="http://www.xbrl.org/2003/role/link">
    <link:loc xlink:type="locator" xlink:href="#Item_2" xlink:label="FeeWaiverOrReimbursementOverAssets" />
    <link:footnote xlink:type="resource" xlink:label="footnote_FeeWaiverOrReimbursementOverAssets" xlink:role="http://www.xbrl.org/2003/role/footnote" xml:lang="en-US" id="footnote_FeeWaiverOrReimbursementOverAssets">The investment advisor has agreed to contractually limit direct net annual fund operating expenses to 0.78% through April 30, 2014. Only the Board of Directors of the Portfolio may terminate the Portfolio's expense limitation before the contractual period expires, upon 60 days' prior notice to shareholders.</link:footnote>
    <link:footnoteArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/fact-footnote" xlink:from="FeeWaiverOrReimbursementOverAssets" xlink:to="footnote_FeeWaiverOrReimbursementOverAssets" />
    <link:loc xlink:type="locator" xlink:href="#Item_4" xlink:label="FeeWaiverOrReimbursementOverAssets_2" />
    <link:footnote xlink:type="resource" xlink:label="footnote_FeeWaiverOrReimbursementOverAssets_2" xlink:role="http://www.xbrl.org/2003/role/footnote" xml:lang="en-US" id="footnote_FeeWaiverOrReimbursementOverAssets_2">The investment advisor has agreed to contractually limit direct net annual fund operating expenses to 0.42% through April 30, 2014. Only the Board of Directors of the Portfolio may terminate the Portfolio's expense limitation before the contractual period expires, upon 60 days' prior notice to shareholders.</link:footnote>
    <link:footnoteArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/fact-footnote" xlink:from="FeeWaiverOrReimbursementOverAssets_2" xlink:to="footnote_FeeWaiverOrReimbursementOverAssets_2" />
    <link:loc xlink:type="locator" xlink:href="#Item_3" xlink:label="FeeWaiverOrReimbursementOverAssets_3" />
    <link:footnote xlink:type="resource" xlink:label="footnote_FeeWaiverOrReimbursementOverAssets_3" xlink:role="http://www.xbrl.org/2003/role/footnote" xml:lang="en-US" id="footnote_FeeWaiverOrReimbursementOverAssets_3">The investment advisor has agreed to contractually limit direct net annual fund operating expenses to 0.74% through April 30, 2014. This expense limitation does not limit the acquired fund fees and expenses paid indirectly by a shareholder. Only the Board of Directors of the Portfolio may terminate the Portfolio's expense limitation before the contractual period expires, upon 60 days' prior notice to shareholders.</link:footnote>
    <link:footnoteArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/fact-footnote" xlink:from="FeeWaiverOrReimbursementOverAssets_3" xlink:to="footnote_FeeWaiverOrReimbursementOverAssets_3" />
    <link:loc xlink:type="locator" xlink:href="#Item_5" xlink:label="AverageAnnualReturnSinceInception" />
    <link:footnote xlink:type="resource" xlink:label="footnote_AverageAnnualReturnSinceInception" xlink:role="http://www.xbrl.org/2003/role/footnote" xml:lang="en-US" id="footnote_AverageAnnualReturnSinceInception">The Portfolio is unable to show performance of the Lipper average since the Portfolio's inception date. For comparison purposes to Lipper, performance for the Portfolio since 12/31/06 is 6.66% and the performance for the Lipper VA General U.S. Government Funds Average is 7.29%.</link:footnote>
    <link:footnoteArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/fact-footnote" xlink:from="AverageAnnualReturnSinceInception" xlink:to="footnote_AverageAnnualReturnSinceInception" />
    <link:loc xlink:type="locator" xlink:href="#Item_7" xlink:label="FeeWaiverOrReimbursementOverAssets_4" />
    <link:footnote xlink:type="resource" xlink:label="footnote_FeeWaiverOrReimbursementOverAssets_4" xlink:role="http://www.xbrl.org/2003/role/footnote" xml:lang="en-US" id="footnote_FeeWaiverOrReimbursementOverAssets_4"> The investment advisor has agreed to contractually limit direct net annual fund operating expenses to 0.95% through April 30, 2014. The expense limitation does not limit the acquired fund fees and expenses paid indirectly by a shareholder. Only the Board of Directors of the Portfolio may terminate the Portfolio's expense limitation before the contractual period expires, upon 60 days' prior notice to shareholders.</link:footnote>
    <link:footnoteArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/fact-footnote" xlink:from="FeeWaiverOrReimbursementOverAssets_4" xlink:to="footnote_FeeWaiverOrReimbursementOverAssets_4" />
    <link:loc xlink:type="locator" xlink:href="#Item_15" xlink:label="OtherExpensesOverAssets" />
    <link:footnote xlink:type="resource" xlink:label="footnote_OtherExpensesOverAssets" xlink:role="http://www.xbrl.org/2003/role/footnote" xml:lang="en-US" id="footnote_OtherExpensesOverAssets">Based on estimated amounts for the current fiscal year.</link:footnote>
    <link:footnoteArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/fact-footnote" xlink:from="OtherExpensesOverAssets" xlink:to="footnote_OtherExpensesOverAssets" />
    <link:loc xlink:type="locator" xlink:href="#Item_16" xlink:label="Item_16_lbl" />
    <link:footnoteArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/fact-footnote" xlink:from="Item_16_lbl" xlink:to="footnote_OtherExpensesOverAssets" use="optional" priority="0" order="1.0" />
    <link:loc xlink:type="locator" xlink:href="#Item_17" xlink:label="FeeWaiverOrReimbursementOverAssets_5" />
    <link:footnote xlink:type="resource" xlink:label="footnote_FeeWaiverOrReimbursementOverAssets_5" xlink:role="http://www.xbrl.org/2003/role/footnote" xml:lang="en-US" id="footnote_FeeWaiverOrReimbursementOverAssets_5">The investment advisor has agreed to contractually limit direct ordinary annual fund operating expenses to 0.83% through April 30, 2014. This expense limitation does not limit the acquired fund fees and expenses paid indirectly by a shareholder. Only the Board of Directors of the Portfolio may terminate the Portfolio's expense limitation before the contractual period expires, upon 60 days' prior notice to shareholders.</link:footnote>
    <link:footnoteArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/fact-footnote" xlink:from="FeeWaiverOrReimbursementOverAssets_5" xlink:to="footnote_FeeWaiverOrReimbursementOverAssets_5" />
    <link:loc xlink:type="locator" xlink:href="#Item_8" xlink:label="FeeWaiverOrReimbursementOverAssets_6" />
    <link:footnote xlink:type="resource" xlink:label="footnote_FeeWaiverOrReimbursementOverAssets_6" xlink:role="http://www.xbrl.org/2003/role/footnote" xml:lang="en-US" id="footnote_FeeWaiverOrReimbursementOverAssets_6">The investment advisor has agreed to contractually limit direct net annual fund operating expenses to 0.81% through April 30, 2014. Only the Board of Directors of the Portfolio may terminate the Portfolio&#8217;s expense limitation before the contractual period expires, upon 60 days' prior notice to shareholders.</link:footnote>
    <link:footnoteArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/fact-footnote" xlink:from="FeeWaiverOrReimbursementOverAssets_6" xlink:to="footnote_FeeWaiverOrReimbursementOverAssets_6" />
    <link:loc xlink:type="locator" xlink:href="#Item_6" xlink:label="FeeWaiverOrReimbursementOverAssets_7" />
    <link:footnote xlink:type="resource" xlink:label="footnote_FeeWaiverOrReimbursementOverAssets_7" xlink:role="http://www.xbrl.org/2003/role/footnote" xml:lang="en-US" id="footnote_FeeWaiverOrReimbursementOverAssets_7">                                                                                   The investment advisor has agreed to contractually limit direct net annual fund operating expenses to 1.19% through April 30, 2014. Only the Board of Directors of the Portfolio may terminate the Portfolio's expense limitation before the contractual period expires, upon 60 days' prior notice to shareholders.</link:footnote>
    <link:footnoteArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/fact-footnote" xlink:from="FeeWaiverOrReimbursementOverAssets_7" xlink:to="footnote_FeeWaiverOrReimbursementOverAssets_7" />
    <link:loc xlink:type="locator" xlink:href="#Item_9" xlink:label="OtherExpensesOverAssets_2" />
    <link:footnote xlink:type="resource" xlink:label="footnote_OtherExpensesOverAssets_2" xlink:role="http://www.xbrl.org/2003/role/footnote" xml:lang="en-US" id="footnote_OtherExpensesOverAssets_2"> Based on estimated amounts for the current fiscal year. </link:footnote>
    <link:footnoteArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/fact-footnote" xlink:from="OtherExpensesOverAssets_2" xlink:to="footnote_OtherExpensesOverAssets_2" />
    <link:loc xlink:type="locator" xlink:href="#Item_10" xlink:label="Item_10_lbl" />
    <link:footnoteArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/fact-footnote" xlink:from="Item_10_lbl" xlink:to="footnote_OtherExpensesOverAssets_2" use="optional" priority="0" order="1.0" />
    <link:loc xlink:type="locator" xlink:href="#Item_11" xlink:label="FeeWaiverOrReimbursementOverAssets_8" />
    <link:footnote xlink:type="resource" xlink:label="footnote_FeeWaiverOrReimbursementOverAssets_8" xlink:role="http://www.xbrl.org/2003/role/footnote" xml:lang="en-US" id="footnote_FeeWaiverOrReimbursementOverAssets_8">              The investment advisor has agreed to contractually limit direct ordinary annual fund operating expenses to 0.83% through April 30, 2014. This expense limitation does not limit the acquired fund fees and expenses paid indirectly by a shareholder. Only the Board of Directors of the Portfolio may terminate the Portfolio's expense limitation before the contractual period expires, upon 60 days' prior notice to shareholders.</link:footnote>
    <link:footnoteArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/fact-footnote" xlink:from="FeeWaiverOrReimbursementOverAssets_8" xlink:to="footnote_FeeWaiverOrReimbursementOverAssets_8" />
    <link:loc xlink:type="locator" xlink:href="#Item_12" xlink:label="OtherExpensesOverAssets_3" />
    <link:footnote xlink:type="resource" xlink:label="footnote_OtherExpensesOverAssets_3" xlink:role="http://www.xbrl.org/2003/role/footnote" xml:lang="en-US" id="footnote_OtherExpensesOverAssets_3">  Based on estimated amounts for the current fiscal year.   </link:footnote>
    <link:footnoteArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/fact-footnote" xlink:from="OtherExpensesOverAssets_3" xlink:to="footnote_OtherExpensesOverAssets_3" />
    <link:loc xlink:type="locator" xlink:href="#Item_13" xlink:label="Item_13_lbl" />
    <link:footnoteArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/fact-footnote" xlink:from="Item_13_lbl" xlink:to="footnote_OtherExpensesOverAssets_3" use="optional" priority="0" order="1.0" />
    <link:loc xlink:type="locator" xlink:href="#Item_14" xlink:label="FeeWaiverOrReimbursementOverAssets_9" />
    <link:footnote xlink:type="resource" xlink:label="footnote_FeeWaiverOrReimbursementOverAssets_9" xlink:role="http://www.xbrl.org/2003/role/footnote" xml:lang="en-US" id="footnote_FeeWaiverOrReimbursementOverAssets_9">   The investment advisor has agreed to contractually limit direct ordinary annual fund operating expenses to 0.83% through April 30, 2014. This expense limitation does not limit the acquired fund fees and expenses paid indirectly by a shareholder. Only the Board of Directors of the Portfolio may terminate the Portfolio's expense limitation before the contractual period expires, upon 60 days' prior notice to shareholders.   </link:footnote>
    <link:footnoteArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/fact-footnote" xlink:from="FeeWaiverOrReimbursementOverAssets_9" xlink:to="footnote_FeeWaiverOrReimbursementOverAssets_9" />
    <link:loc xlink:type="locator" xlink:href="#Item_18" xlink:label="AverageAnnualReturnSinceInception_2" />
    <link:footnote xlink:type="resource" xlink:label="footnote_AverageAnnualReturnSinceInception_2" xlink:role="http://www.xbrl.org/2003/role/footnote" xml:lang="en-US" id="footnote_AverageAnnualReturnSinceInception_2"> The Portfolio is unable to show performance of the Lipper average since the Portfolio's inception date. For comparison purposes to Lipper, performance for the Portfolio since 12/31/06 is 5.82% and the performance for the Lipper VA Natural Resources Funds Average is 2.27%. </link:footnote>
    <link:footnoteArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/fact-footnote" xlink:from="AverageAnnualReturnSinceInception_2" xlink:to="footnote_AverageAnnualReturnSinceInception_2" />
  </link:footnoteLink>
</xbrl>