2.2.0.25truefalse001501 - Document - Risk/Return Summary {Unlabeled} - (Pioneer Ibbotson Moderate Allocation VCT Portfolio) (Class I)falsefalsetrue1falsefalsetruefalse{dei_DocumentInformationDocumentAxis} : Class I Shares Member {dei_LegalEntityAxis} : S000010177 Member 5/1/2011 - 5/1/2011 Duration_5_1_2011_To_5_1_2011_dei_DocumentInformationDocumentAxis_cik0000930709_ClassISharesMember_dei_LegalEntityAxis_cik0000930709_S000010177Memberhttp://www.sec.gov/CIK0000930709duration2011-05-01T00:00:002011-05-01T00:00:00falsefalsecik0000930709_ClassISharesMemberdei_DocumentInformationDocumentAxisxbrldihttp://xbrl.org/2006/xbrldicik0000930709_ClassISharesMemberdei_DocumentInformationDocumentAxisexplicitMemberfalsefalsecik0000930709_S000010177Memberdei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldicik0000930709_S000010177Memberdei_LegalEntityAxisexplicitMemberUnit1Standardhttp://www.xbrl.org/2003/instancepurexbrli01false0natruenanaNo definition available.falsetruefalsefalsefalsefalsefalsefalsefalsefalsehttp://www.pioneerinvestments.com/role/documentriskreturnsummaryunlabeledpioneeribbotsonmoderateallocationvctportfolioclassi1falsefalsefalse00Class I Shares | Pioneer Ibbotson Moderate Allocation VCT PortfolioClass I Shares | Pioneer Ibbotson Moderate Allocation VCT Portfoliofalsefalsefalsefalsefalse1falsefalsetruefalse{dei_DocumentInformationDocumentAxis} : Class I Shares Member {dei_LegalEntityAxis} : S000010177 Member 5/1/2011 - 5/1/2011 Duration_5_1_2011_To_5_1_2011_dei_DocumentInformationDocumentAxis_cik0000930709_ClassISharesMember_dei_LegalEntityAxis_cik0000930709_S000010177Memberhttp://www.sec.gov/CIK0000930709duration2011-05-01T00:00:002011-05-01T00:00:00falsefalsecik0000930709_ClassISharesMemberdei_DocumentInformationDocumentAxisxbrldihttp://xbrl.org/2006/xbrldicik0000930709_ClassISharesMemberdei_DocumentInformationDocumentAxisexplicitMemberfalsefalsecik0000930709_S000010177Memberdei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldicik0000930709_S000010177Memberdei_LegalEntityAxisexplicitMemberUnit1Standardhttp://www.xbrl.org/2003/instancepurexbrli0OthernaNo definition available.No authoritative reference available.falsefalseClass I Shares | Pioneer Ibbotson Moderate Allocation VCT Portfolio3false0rr_RiskReturnHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div class="MetaData"> <p><font size="2" class="_mt" style="font-family: Lucida Console;">PIONEER IBBOTSON MODERATE ALLOCATION VCT PORTFOLIO</font><br /><font size="2" class="_mt" style="font-family: Lucida Console;">Portfolio summary</font></p></div>falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringRisk/Return Summary Investment Objectives/Goals Include the following information, in plain English under rule 421(d) under the Securities Act, in the order and subject matter indicatedReference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 2 falsefalseRisk/Return [Heading]4false0rr_ObjectiveHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div class="MetaData"> <p style="margin-top: 0px; margin-bottom: 0px;"><font size="2" class="_mt" style="font-family: Lucida Console;">INVESTMENT OBJECTIVES</font></p></div>falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringInvestment Objectives/Goals. Disclose the Fund's investment objectives or goals. A Fund also may identify its type or category (e.g., that it is a Money Market Fund or a balanced fund).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 2 -Subsection a falsefalseObjective [Heading]5false0rr_ObjectivePrimaryTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div> <div class="MetaData"> <p style="margin-top: 0px; margin-bottom: 0px;"><font size="2" class="_mt" style="font-family: Lucida Console;"> </font><br /><font size="2" class="_mt" style="font-family: Lucida Console;">Long-term capital growth and current income.</font></p></div> </div>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringInvestment Objectives/Goals. Disclose the Fund's investment objectives or goals. A Fund also may identify its type or category (e.g., that it is a Money Market Fund or a balanced fund).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 2 -Subsection a falsefalseObjective, Primary [Text Block]6false0rr_ExpenseHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div class="MetaData"> <p style="margin-top: 0px; margin-bottom: 0px;"><font size="2" class="_mt" style="font-family: Lucida Console;">FEES AND EXPENSES</font></p></div>falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringRisk/Return Summary Fee Table Includes the following information, in plain English under rule 421(d) under the Securities Act, after Item 2 Fees and expenses of the Fund This table describes the fees and expenses that you may pay if you buy and hold shared of the Fund. You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $[_____] in [name of fund family] funds. Shareholder Fees (fees paid directly from your investment) Example This Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then you redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return per year and that the Fund's operating expenses remained the same. Although your actual costs may be higher or lower, based on these assumptions your costs would be You would pay the following expenses if you did not redeem your shares The Example does not reflect sales charges (loads) on reinvested dividends [and other distributions]. If these sales charges (loads) were included, your costs would be higher. Portfolio Turnover The Fund pays transaction costs, such as commissions, when it buys and sells securities (or "turns over" its portfolio). A higher portfolio turnover may indicate higher transaction costs. These costs, which are not reflected in annual fund operating expenses or in the example, affect the Fund's performance. During the most recent fiscal year, the Fund's portfolio turnover rate was __% of the average value of its whole portfolio. Instructions. A.3.instructions.6 New Funds. For purposes of this Item, a "New Fund" is a Fund that does not include in Form N-1A financial statements reporting operating results or that includes financial statements for the Fund's initial fiscal year reporting operating results for a period of 6 months or less. The following Instructions apply to New Funds.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph d -Subsection instructions falsefalseExpense [Heading]7false0rr_ExpenseNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div> <div class="MetaData"> <p style="margin-top: 0px; margin-bottom: 0px;"><font size="2" class="_mt" style="font-family: Lucida Console;">This table describes the fees and expenses that you may pay if you buy and hold shares of the portfolio. YOUR COSTS WOULD BE HIGHER IF FEES OR SALES CHARGES IMPOSED BY A VARIABLE CONTRACT FOR WHICH THE PORTFOLIO IS AN INVESTMENT OPTION WERE INCLUDED. Please consult your insurance company's separate account prospectus or disclosure document for more information.</font></p></div> </div>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringThis table describes the fees and expenses that you may pay if you buy and hold shared of the Fund. You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $[_____] in [name of fund family] funds. Include the narrative explanations in the order indicated. A Fund may modify the narrative explanations if the explanation contains comparable information to that shown.The narrative explanation regarding sales charge discounts is only required by a Fund that offers such discounts and should specify the minimum level of investment required to qualify for a discount. Modify the narrative explanation to state that Fund shares are sold on a national securities exchange at the end of the time periods indicated, and that brokerage commissions for buying and selling Fund shares through a broker are not reflected.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph b -Subsection instructions falsefalseExpense Narrative [Text Block]8false0rr_OperatingExpensesCaptionrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div class="MetaData"> <p style="margin-top: 0px; margin-bottom: 0px;"><font size="2" class="_mt" style="font-family: Lucida Console;">ANNUAL PORTFOLIO OPERATING EXPENSES PAID</font></p> <p style="margin-top: 0px; margin-bottom: 0px;"><font size="2" class="_mt" style="font-family: Lucida Console;">(expenses that you pay each year as a percentage of the value of your investment)</font></p></div>falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringAnnual Fund Operating Expenses (ongoing expenses that you pay each year as a percentage of the value of your investment)Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 7 -Subsection table falsefalseOperating Expenses Caption [Text]9false0rr_AnnualFundOperatingExpensesTableTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div> &lt;div style="display:none;" &gt;~ http://www.pioneerinvestments.com/role/ScheduleAnnualFundOperatingExpensesPioneerIbbotsonModerateAllocationVctPortfolioClassI column period compact * column dei_DocumentInformationDocumentAxis compact cik0000930709_ClassISharesMember column dei_LegalEntityAxis compact cik0000930709_S000010177Member column rr_ProspectusShareClassAxis compact * row primary compact * ~&lt;/div&gt; </div>falsefalse<div> &lt;div style="display:none;" &gt;~ http://www.pioneerinvestments.com/role/ScheduleAnnualFundOperatingExpensesPioneerIbbotsonModerateAllocationVctPortfolioClassI column period compact * column dei_DocumentInformationDocumentAxis compact cik0000930709_ClassISharesMember column dei_LegalEntityAxis compact cik0000930709_S000010177Member column rr_ProspectusShareClassAxis compact * row primary compact * ~&lt;/div&gt; </div>falsehttp://www.pioneerinvestments.com/role/ScheduleAnnualFundOperatingExpensesPioneerIbbotsonModerateAllocationVctPortfolioClassIfalsefalse001503 - Schedule - Annual Fund Operating Expenses - {Pioneer Ibbotson Moderate Allocation VCT Portfolio} {Class I}truefalsefalse1falseColumnperiodPeriod*Columndei_DocumentInformationDocumentAxisAxiscik0000930709_ClassISharesMemberColumndei_LegalEntityAxisAxiscik0000930709_S000010177MemberColumnrr_ProspectusShareClassAxisAxis*ColumnunitUnit*duration2011-05-01T00:00:002011-05-01T00:00:00falsefalseClass I Sharesdei_DocumentInformationDocumentAxisxbrldihttp://xbrl.org/2006/xbrldicik0000930709_ClassISharesMemberdei_DocumentInformationDocumentAxisexplicitMemberfalsefalsePioneer Ibbotson Moderate Allocation VCT Portfoliodei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldicik0000930709_S000010177Memberdei_LegalEntityAxisexplicitMemberfalsefalseClass Irr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldicik0000930709_C000043518Memberrr_ProspectusShareClassAxisexplicitMemberClass I SharesPioneer Ibbotson Moderate Allocation VCT PortfolioClass IUnit12Standardhttp://www.xbrl.org/2003/iso4217USDiso42170falseUSDfalsefalse$1falseRowprimaryElement*5false0rr_ManagementFeesOverAssetsrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.00170.0017falsefalsefalsetruefalseOtherrr:NonNegativePure4TypepureManagement Fees include investment advisory fees (including any fees based on the Fund's performance), any other management fees payable to the investment adviser or its affiliates, and administrative fees payable to the investment adviser or its affiliates that are not included as "Other Expenses."Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 3 -Subparagraph a -Subsection instructions falsefalseManagement Fees0rr_ManagementFeesOverAssetstruefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.00170.0017falsefalsefalsetruefalseOthernanafalsefalseManagement Fees2falseRowprimaryElement*6false0rr_DistributionAndService12b1FeesOverAssetsrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.00000.0000falsefalsefalsetruefalseOtherrr:NonNegativePure4TypepureDistribution [and/or Service] (12b-1) Fees" include all distribution or other expenses incurred during the most recent fiscal year under a plan adopted pursuant to rule 12b-1 [17 CFR 270.12b-1]. Under an appropriate caption or a subcaption of "Other Expenses," disclose the amount of any distribution or similar expenses deducted from the Fund's assets other than pursuant to a rule 12b-1 plan.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 9 -Subsection table falsefalseDistribution and Service (12b-1) Fees0rr_DistributionAndService12b1FeesOverAssetstruefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.00000.0000falsefalsefalsetruefalseOthernanafalsefalseDistribution and Service (12b-1) Fees3falseRowprimaryElement*7false0rr_OtherExpensesOverAssetsrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.00100.0010falsefalsefalsetruefalseOtherrr:NonNegativePure4Typepure"Other Expenses" include all expenses not otherwise disclosed in the table that are deducted from the Fund's assets or charged to all shareholder accounts. The amount of expenses deducted from the Fund's assets are the amounts shown as expenses in the Fund's statement of operations (including increases resulting from complying with paragraph 2(g) of rule 6-07 of Regulation S-X [17 CFR 210.6-07]). "Other Expenses" do not include extraordinary expenses as determined under generally accepted accounting principles (see Accounting Principles Board Opinion No. 30). If extraordinary expenses were incurred that materially affected the Fund's "Other Expenses," disclose in a footnote to the table what "Other Expenses" would have been had the extraordinary expenses been included.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 3 -Subparagraph c -Clause i -Subsection instructions falsefalseOther Expenses0rr_OtherExpensesOverAssetstruefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.00100.0010falsefalsefalsetruefalseOthernanafalsefalseOther Expenses4falseRowprimaryElement*8false0rr_AcquiredFundFeesAndExpensesOverAssetsrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.00780.0078[2]falsefalsefalsetruefalseOtherrr:NonNegativePure4TypepureTotal Annual Fund Operating Expenses.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 11 -Subsection table falsefalseAcquired Fund Fees and Expenses0rr_AcquiredFundFeesAndExpensesOverAssetstruefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse[1]1truetruetrue0.00780.0078falsefalsefalsetruefalseOthernanafalsefalseAcquired Fund Fees and Expenses5falseRowprimaryElement*9false0rr_ExpensesOverAssetsrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalsetotallabel1truetruetrue0.01050.0105[2]falsefalsefalsetruefalseOtherrr:NonNegativePure4TypepureTotal Annual Fund Operating Expenses. If the Fund is a Feeder Fund, reflect the aggregate expenses of the Feeder Fund and the Master Fund in a single fee table using the captions provided. In a footnote to the fee table, state that the table and Example reflect the expenses of both the Feeder and Master Funds. If the prospectus offers more than one Class of a Multiple Class Fund or more than one Feeder Fund that invests in the same Master Fund, provide a separate response for each Class or Feeder Fund. Base the percentages of "Annual Fund Operating Expenses" on amounts incurred during the Fund's most recent fiscal year, but include in expenses amounts that would have been incurred absent expense reimbursement or fee waiver arrangements. If the Fund has changed its fiscal year and, as a result, the most recent fiscal year is less than three months, use the fiscal year prior to the most recent fiscal year as the basis for determining "Annual Fund Operating Expenses."Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 3 -Subparagraph d -Subsection instructions truefalseTotal Annual Portfolio Operating Expenses0rr_ExpensesOverAssetstruefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse[1]1truetruetrue0.01050.0105falsefalsefalsetruefalseOthernanafalsefalseTotal Annual Portfolio Operating Expenses6falseRowprimaryElement*10false0rr_FeeWaiverOrReimbursementOverAssetsrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsetruenegated1truetruetrue0.00030.0003[1]falsefalsefalsetruefalseOtherrr:NonPositivePure4TypepureTotal Annual Fund Operating Expenses. If there were expense reimbursement or fee waiver arrangements that reduced any Fund operating expenses and will continue to reduce them for no less than one year from the effective date of the Fund's registration statement, a Fund may add two captions to the table one caption showing the amount of the expense reimbursement or fee waiver, and a second caption showing the Fund's net expenses after subtracting the fee reimbursement or expense waiver from the total fund operating expenses. The Fund should place these additional captions directly below the "Total Annual Fund Operating Expenses" caption of the table and should use appropriate descriptive captions, such as "Fee Waiver [and/or Expense Reimbursement]" and "Total Annual Fund Operating Expenses After Fee Waiver [and/or Expense Reimbursement]," respectively. If the Fund provides this disclosure, also disclose the period for which the expense reimbursement or fee waiver arrangement is expected to continue, and briefly describe who can terminate the arrangement and under what circumstances.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 11 -Subsection table falsefalseFee Waiver or Reimbursement0rr_FeeWaiverOrReimbursementOverAssetstruefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse[2]1truetruetrue0.00030.0003falsefalsefalsetruefalseOthernanafalsefalseFee Waiver or Reimbursement7falseRowprimaryElement*11false0rr_NetExpensesOverAssetsrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalsetotallabel1truetruetrue0.01020.0102[1]falsefalsefalsetruefalseOtherrr:NonNegativePure4TypepureTotal Annual Fund Operating Expenses.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 11 -Subsection table truefalseTotal Annual Portfolio Operating Expenses After Fee Waiver and Expense Reimbursement Plus Acquired Fund Fees and Expenses0rr_NetExpensesOverAssetstruefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse[2]1truetruetrue0.01020.0102falsefalsefalsetruefalseOthernanafalsefalseTotal Annual Portfolio Operating Expenses After Fee Waiver and Expense Reimbursement Plus Acquired Fund Fees and Expenses1 Total annual portfolio operating expenses in the table, before and after fee waiver and expense reimbursement, may be higher than the corresponding ratios of expenses to average net assets shown in the "Financial Highlights" section, which do not include acquired fund fees and expenses.2 The portfolio's investment adviser has contractually agreed to limit ordinary operating expenses of Class I shares, based on the amount such expenses are reduced for another class of shares of the portfolio (0.03% for the fiscal year ended December 31, 2010). Acquired fund fees and expenses are not included in the expense limitation noted above. This expense limitation is in effect through May 1, 2012. There can be no assurance that the adviser will extend the expense limitation beyond such time. While in effect, the arrangement may be terminated only by agreement of the adviser and the Board of Trustees. The expense limitation does not limit the expenses of the underlying funds indirectly incurred by a shareholder.17Annual Fund Operating Expenses - UnKnownUnKnownUnKnownUnKnownfalsetrueColumnperiodPeriod*Columndei_DocumentInformationDocumentAxisAxiscik0000930709_ClassISharesMemberColumndei_LegalEntityAxisAxiscik0000930709_S000010177MemberColumnrr_ProspectusShareClassAxisAxis*ColumnunitUnit*RowprimaryElement*falsefalsefalseOtherus-types:textBlockItemTypestringContains a command for the SEC Viewer for the role corresponding to OperatingExpensesData.No authoritative reference available.falsefalseAnnual Fund Operating Expenses [Table]10false0rr_ExpenseExampleHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div class="MetaData"> <p style="margin-top: 0px; margin-bottom: 0px;"><font size="2" class="_mt" style="font-family: Lucida Console;">EXAMPLE</font></p></div>falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringHeading for Expense Example.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 4 -Subsection instructions falsefalseExpense Example [Heading]11false0rr_ExpenseExampleNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div> <div class="MetaData"> <div> <p style="margin-top: 0px; margin-bottom: 0px;"><font size="2" class="_mt" style="font-family: Lucida Console;">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 you invest $10,000 in the portfolio for the time periods shown and then redeem all of your shares at the end of those periods. It also assumes that (a) your investment has a 5% return each year and (b) the portfolio's total annual operating expenses remain the same except for year one (which considers the effect of the expense limitation). This example does not reflect any fees or sales charges imposed by a Variable Contract for which the portfolio is an investment option. If they were included, your costs would be higher.</font></p></div> <p style="margin-top: 0px; margin-bottom: 0px;">&nbsp;</p> <p style="margin-top: 0px; margin-bottom: 0px;"><font size="2" class="_mt" style="font-family: Lucida Console;">Although your actual costs may be higher or lower, based on these assumptions your costs would be:</font></p></div> </div>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringThe Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 1 -Subsection example falsefalseExpense Example Narrative [Text Block]12false0rr_ExpenseExampleByYearCaptionrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div class="MetaData"> <div> <p style="margin-top: 0px; margin-bottom: 0px;"><font size="2" class="_mt" style="font-family: Lucida Console;">NUMBER OF YEARS YOU OWN YOUR SHARES </font></p> <p style="margin-top: 0px; margin-bottom: 0px;"><font size="2" class="_mt" style="font-family: Lucida Console;">(WITH REDEMPTION)</font></p></div></div>falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringThe Example assumes that you invest $10,000 in the Fund for the time periods indicated and then you redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return per year and that the Fund's operating expenses remained the same. Although your actual costs may be higher or lower.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 2 -Subsection example falsefalseExpense Example by, Year, Caption [Text]13false0rr_ExpenseExampleWithRedemptionTableTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div> &lt;div style="display:none;" &gt;~ http://www.pioneerinvestments.com/role/ScheduleExpenseExampleTransposedPioneerIbbotsonModerateAllocationVctPortfolioClassI row period compact * row primary compact * column dei_DocumentInformationDocumentAxis compact cik0000930709_ClassISharesMember column dei_LegalEntityAxis compact cik0000930709_S000010177Member column rr_ProspectusShareClassAxis compact * ~&lt;/div&gt; </div>falsefalse<div> &lt;div style="display:none;" &gt;~ http://www.pioneerinvestments.com/role/ScheduleExpenseExampleTransposedPioneerIbbotsonModerateAllocationVctPortfolioClassI row period compact * row primary compact * column dei_DocumentInformationDocumentAxis compact cik0000930709_ClassISharesMember column dei_LegalEntityAxis compact cik0000930709_S000010177Member column rr_ProspectusShareClassAxis compact * ~&lt;/div&gt; </div>truehttp://www.pioneerinvestments.com/role/ScheduleExpenseExampleTransposedPioneerIbbotsonModerateAllocationVctPortfolioClassIfalsefalse001504 - Schedule - Expense Example {Transposed} - {Pioneer Ibbotson Moderate Allocation VCT Portfolio} {Class I}truefalsefalse1falseColumnperiodPeriod*ColumnprimaryElement*5false0rr_ExpenseExampleYear01rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1truefalsetrue104104falsefalsefalsetruefalseMonetaryrr:NonNegativeMonetaryTypemonetaryThe Example assumes that you invest $10,000 in the Fund for the time periods indicated and then you redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return per year and that the Fund's operating expenses remained the same. Although your actual costs may be higher or lower.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 4 -Subsection instructions falsefalse1duration2011-05-01T00:00:002011-05-01T00:00:00falseUSDfalsefalse$2falseColumnperiodPeriod*ColumnprimaryElement*6false0rr_ExpenseExampleYear03rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1truefalsetrue331331falsefalsefalsetruefalseMonetaryrr:NonNegativeMonetaryTypemonetaryThe Example assumes that you invest $10,000 in the Fund for the time periods indicated and then you redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return per year and that the Fund's operating expenses remained the same. Although your actual costs may be higher or lower.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 2 -Subsection example falsefalse3duration2011-05-01T00:00:002011-05-01T00:00:00falseUSDfalsefalse$3falseColumnperiodPeriod*ColumnprimaryElement*7false0rr_ExpenseExampleYear05rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1truefalsetrue576576falsefalsefalsetruefalseMonetaryrr:NonNegativeMonetaryTypemonetaryThe Example assumes that you invest $10,000 in the Fund for the time periods indicated and then you redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return per year and that the Fund's operating expenses remained the same. Although your actual costs may be higher or lower.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 2 -Subsection example falsefalse5duration2011-05-01T00:00:002011-05-01T00:00:00falseUSDfalsefalse$4falseColumnperiodPeriod*ColumnprimaryElement*8false0rr_ExpenseExampleYear10rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1truefalsetrue12801280falsefalsefalsetruefalseMonetaryrr:NonNegativeMonetaryTypemonetaryThe Example assumes that you invest $10,000 in the Fund for the time periods indicated and then you redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return per year and that the Fund's operating expenses remained the same. Although your actual costs may be higher or lower.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 2 -Subsection example falsefalse10duration2011-05-01T00:00:002011-05-01T00:00:00falseUSDfalsefalse$1falseRowdei_DocumentInformationDocumentAxisAxiscik0000930709_ClassISharesMemberRowdei_LegalEntityAxisAxiscik0000930709_S000010177MemberRowrr_ProspectusShareClassAxisAxis*RowunitUnit*falsefalseClass I Sharesdei_DocumentInformationDocumentAxisxbrldihttp://xbrl.org/2006/xbrldicik0000930709_ClassISharesMemberdei_DocumentInformationDocumentAxisexplicitMemberfalsefalsePioneer Ibbotson Moderate Allocation VCT Portfoliodei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldicik0000930709_S000010177Memberdei_LegalEntityAxisexplicitMemberfalsefalseClass Irr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldicik0000930709_C000043518Memberrr_ProspectusShareClassAxisexplicitMemberClass I SharesPioneer Ibbotson Moderate Allocation VCT PortfolioClass IUnit12Standardhttp://www.xbrl.org/2003/iso4217USDiso421700truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truefalsetrue104104falsefalsefalsetruefalse2truefalsetrue331331falsefalsefalsetruefalse3truefalsetrue576576falsefalsefalsetruefalse4truefalsetrue12801280falsefalsefalsetruefalseOthernanafalsefalseClass I Shares Pioneer Ibbotson Moderate Allocation VCT Portfolio Class I41Expense Example - (USD $)UnKnownUnKnownUnKnownUnKnownfalsetrueColumnperiodPeriod*ColumnprimaryElement*Rowdei_DocumentInformationDocumentAxisAxiscik0000930709_ClassISharesMemberRowdei_LegalEntityAxisAxiscik0000930709_S000010177MemberRowrr_ProspectusShareClassAxisAxis*RowunitUnit*falsefalsefalseOtherus-types:textBlockItemTypestringContains a command for the SEC Viewer for the role corresponding to ExpenseExample.No authoritative reference available.falsefalseExpense Example, With Redemption [Table]14false0rr_ExpenseExampleNoRedemptionByYearCaptionrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div class="MetaData"><font style="background-color: #ffffff; font-family: Times New Roman;" color="#000000" size="3" class="_mt"> </font> <p style="margin-top: 0px; margin-bottom: 0px;"><br /><font size="2" class="_mt" style="font-family: Lucida Console;">NUMBER OF YEARS YOU OWN YOUR SHARES</font></p> <p style="margin-top: 0px; margin-bottom: 0px;"> </p><font size="2" class="_mt" style="font-family: Lucida Console;">(WITHOUT REDEMPTION)</font> <p> </p></div>falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringYou would pay the following expenses if you did not redeem your shares. Include the second 1-, 3-, 5-, and 10-year periods and related narrative explanation only if a sales charge (load) or other fee is charged upon redemption.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 2 -Subparagraph 1 -Subsection example falsefalseExpense Example, No Redemption, By Year, Caption [Text]15false0rr_ExpenseExampleNoRedemptionTableTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div> &lt;div style="display:none;" &gt;~ http://www.pioneerinvestments.com/role/ScheduleExpenseExampleNoRedemptionTransposedPioneerSmallCapValueVctPortfolio row period compact * row primary compact * column dei_DocumentInformationDocumentAxis compact cik0000930709_ClassISharesMember column dei_LegalEntityAxis compact cik0000930709_S000010177Member column rr_ProspectusShareClassAxis compact * ~&lt;/div&gt; </div>falsefalse<div> &lt;div style="display:none;" &gt;~ http://www.pioneerinvestments.com/role/ScheduleExpenseExampleNoRedemptionTransposedPioneerSmallCapValueVctPortfolio row period compact * row primary compact * column dei_DocumentInformationDocumentAxis compact cik0000930709_ClassISharesMember column dei_LegalEntityAxis compact cik0000930709_S000010177Member column rr_ProspectusShareClassAxis compact * ~&lt;/div&gt; </div>truehttp://www.pioneerinvestments.com/role/ScheduleExpenseExampleNoRedemptionTransposedPioneerSmallCapValueVctPortfoliofalsefalse001505 - Schedule - Expense Example, No Redemption {Transposed} - {Pioneer Ibbotson Moderate Allocation VCT Portfolio} {Class I}truefalsefalse1falseColumnperiodPeriod*ColumnprimaryElement*5false0rr_ExpenseExampleNoRedemptionYear01rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1truefalsetrue104104falsefalsefalsetruefalseMonetaryrr:NonNegativeMonetaryTypemonetaryYou would pay the following expenses if you did not redeem your shares. Include the second 1-, 3-, 5-, and 10-year periods and related narrative explanation only if a sales charge (load) or other fee is charged upon redemption.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 2 -Subparagraph 1 -Subsection example falsefalse1duration2011-05-01T00:00:002011-05-01T00:00:00falseUSDfalsefalse$2falseColumnperiodPeriod*ColumnprimaryElement*6false0rr_ExpenseExampleNoRedemptionYear03rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1truefalsetrue331331falsefalsefalsetruefalseMonetaryrr:NonNegativeMonetaryTypemonetaryYou would pay the following expenses if you did not redeem your shares. Include the second 1-, 3-, 5-, and 10-year periods and related narrative explanation only if a sales charge (load) or other fee is charged upon redemption.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 2 -Subparagraph 1 -Subsection example falsefalse3duration2011-05-01T00:00:002011-05-01T00:00:00falseUSDfalsefalse$3falseColumnperiodPeriod*ColumnprimaryElement*7false0rr_ExpenseExampleNoRedemptionYear05rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1truefalsetrue576576falsefalsefalsetruefalseMonetaryrr:NonNegativeMonetaryTypemonetaryYou would pay the following expenses if you did not redeem your shares. Include the second 1-, 3-, 5-, and 10-year periods and related narrative explanation only if a sales charge (load) or other fee is charged upon redemption.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 4 -Subparagraph f -Subsection instructions falsefalse5duration2011-05-01T00:00:002011-05-01T00:00:00falseUSDfalsefalse$4falseColumnperiodPeriod*ColumnprimaryElement*8false0rr_ExpenseExampleNoRedemptionYear10rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1truefalsetrue12801280falsefalsefalsetruefalseMonetaryrr:NonNegativeMonetaryTypemonetaryYou would pay the following expenses if you did not redeem your shares. Include the second 1-, 3-, 5-, and 10-year periods and related narrative explanation only if a sales charge (load) or other fee is charged upon redemption.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 4 -Subparagraph f -Subsection instructions falsefalse10duration2011-05-01T00:00:002011-05-01T00:00:00falseUSDfalsefalse$1falseRowdei_DocumentInformationDocumentAxisAxiscik0000930709_ClassISharesMemberRowdei_LegalEntityAxisAxiscik0000930709_S000010177MemberRowrr_ProspectusShareClassAxisAxis*RowunitUnit*falsefalseClass I Sharesdei_DocumentInformationDocumentAxisxbrldihttp://xbrl.org/2006/xbrldicik0000930709_ClassISharesMemberdei_DocumentInformationDocumentAxisexplicitMemberfalsefalsePioneer Ibbotson Moderate Allocation VCT Portfoliodei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldicik0000930709_S000010177Memberdei_LegalEntityAxisexplicitMemberfalsefalseClass Irr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldicik0000930709_C000043518Memberrr_ProspectusShareClassAxisexplicitMemberClass I SharesPioneer Ibbotson Moderate Allocation VCT PortfolioClass IUnit12Standardhttp://www.xbrl.org/2003/iso4217USDiso421700truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truefalsetrue104104falsefalsefalsetruefalse2truefalsetrue331331falsefalsefalsetruefalse3truefalsetrue576576falsefalsefalsetruefalse4truefalsetrue12801280falsefalsefalsetruefalseOthernanafalsefalseClass I Shares Pioneer Ibbotson Moderate Allocation VCT Portfolio Class I41Expense Example, No Redemption - (USD $)UnKnownUnKnownUnKnownUnKnownfalsetrueColumnperiodPeriod*ColumnprimaryElement*Rowdei_DocumentInformationDocumentAxisAxiscik0000930709_ClassISharesMemberRowdei_LegalEntityAxisAxiscik0000930709_S000010177MemberRowrr_ProspectusShareClassAxisAxis*RowunitUnit*falsefalsefalseOtherus-types:textBlockItemTypestringContains a command for the SEC Viewer for the role corresponding to ExpenseExampleNoRedemption.No authoritative reference available.falsefalseExpense Example, No Redemption [Table]16false0rr_PortfolioTurnoverHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div class="MetaData"> <p style="margin-top: 0px; margin-bottom: 0px;"><font size="2" class="_mt" style="font-family: Lucida Console;">PORTFOLIO TURNOVER</font></p></div>falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringDisclose the portfolio turnover rate provided in response to Item 14(a) for the most recent fiscal year (or for such shorter period as the Fund has been in operation). Disclose the period for which the information is provided if less than a full fiscal year. A Fund that is a Money Market Fund may omit the portfolio turnover information required by this Item.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 5 -Subsection instructions falsefalsePortfolio Turnover [Heading]17false0rr_PortfolioTurnoverTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div> <div class="MetaData"> <p style="margin-top: 0px; margin-bottom: 0px;"><font size="2" class="_mt" style="font-family: Lucida Console;">The portfolio pays transaction costs, such as commissions, when it buys and sells securities (or "turns over" its portfolio). A higher portfolio turnover rate may indicate higher transaction costs. These costs, which are not reflected in annual portfolio operating expenses or in the example, affect the portfolio's performance. During the most recent fiscal year, the portfolio turnover rate was&nbsp;<font class="_mt">10%</font> of the average value of the portfolio.</font></p></div> </div>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringDisclose the portfolio turnover rate provided in response to Item 14(a) for the most recent fiscal year (or for such shorter period as the Fund has been in operation). Disclose the period for which the information is provided if less than a full fiscal year. A Fund that is a Money Market Fund may omit the portfolio turnover information required by this Item.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 3 -Subsection example falsefalsePortfolio Turnover [Text Block]18false0rr_StrategyHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div class="MetaData"> <p><br /><font size="2" class="_mt" style="font-family: Lucida Console;">PRINCIPAL INVESTMENT STRATEGIES</font></p></div>falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringPrincipal investment strategies of the Fund. Summarize how the Fund intends to achieve its investment objectives by identifying the Fund's principal investment strategies (including the type or types of securities in which the Fund invests or will invest principally) and any policy to concentrate in securities of issuers in a particular industry or group of industries.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection a falsefalseStrategy [Heading]19false0rr_StrategyNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div> <div class="MetaData"> <p><font size="2" class="_mt" style="font-family: Lucida Console;">The portfolio is a "fund of funds." The portfolio seeks to achieve its investment objective by investing in other funds ("underlying funds" or "acquired funds") rather than direct positions in securities. The underlying funds have their own investment objectives and principal investment strategies and invest in a variety of U.S. and foreign equity, debt and money market securities. Equity securities in which underlying funds invest include common stocks, preferred stocks, debt convertible to equity securities, and equity securities with common stock characteristics such as real estate investment trusts, and exchange-traded funds that invest primarily in equity securities. Debt securities in which underlying funds may invest include U.S. government securities, debt securities of corporate and other issuers, mortgage- and asset backed securities and short term debt securities. Underlying funds also may use derivatives, such as credit default swaps. The underlying funds may lend portfolio securities in their portfolios to earn additional income. The underlying funds may lend up to 33 1/3% of their total assets. Any income realized through securities lending may help portfolio performance.</font><font size="2" class="_mt" style="font-family: Lucida Console;">&nbsp;</font></p> <p style="margin-top: 0px; margin-bottom: 0px;"><font size="2" class="_mt" style="font-family: Lucida Console;">Because this is a moderate allocation portfolio, the portfolio's assets will be invested in equity and fixed income funds, although a portion of its assets will be invested in cash, cash equivalents, or in money market funds. Under normal circumstances, the portfolio expects to invest its assets among asset classes in the following ranges. The portfolio's investment adviser may change these allocation ranges from time to time without the approval of or notice to shareholders. The fixed income fund allocation includes the portfolio's investments in cash, cash equivalents and money market funds.</font></p> <p style="margin-top: 0px; margin-bottom: 0px;"><br /><font size="2" class="_mt" style="font-family: Lucida Console;">INVESTMENT STRATEGIES/ASSET CLASS TARGETS</font></p> <p style="margin-top: 0px; margin-bottom: 0px;">&nbsp;</p> <p style="margin-top: 0px; margin-bottom: 0px;"> </p> <table style="width: 474pt; border-collapse: collapse;" border="0" cellspacing="0" cellpadding="0" width="632"><tr style="height: 63.75pt;"> <td style="background-color: transparent; width: 180pt; height: 63.75pt;" class="xl67" height="85" width="240"><font class="_mt" style="font-family: Calibri;">&nbsp;</font></td> <td style="background-color: transparent; width: 70pt;" class="xl66" width="93"><font size="2" class="_mt"><font class="_mt" style="font-family: Lucida Console;">EQUITY FUND<font class="_mt">&nbsp; </font>ALLOCATION<font class="_mt">&nbsp;&nbsp;</font></font></font></td> <td style="background-color: transparent; width: 111pt;" class="xl66" width="148"><font size="2" class="_mt"><font class="_mt" style="font-family: Lucida Console;">FIXED INCOME FUND<font class="_mt">&nbsp; </font>ALLOCATION<font class="_mt">&nbsp;&nbsp;</font></font></font></td> <td style="background-color: transparent; width: 113pt;" class="xl66" width="151"><font size="2" class="_mt"><font class="_mt" style="font-family: Lucida Console;">ALTERNATIVES/COMMODITIES<font class="_mt">&nbsp; </font>ALLOCATION<font class="_mt">&nbsp;&nbsp;</font></font></font></td></tr> <tr style="height: 25.5pt;"><td style="background-color: transparent; width: 180pt; height: 25.5pt;" class="xl66" height="34" width="240"><font size="2" class="_mt"><font class="_mt" style="font-family: Lucida Console;">Pioneer Ibbotson Moderate Allocation VCT Portfolio<font class="_mt">&nbsp;</font></font></font></td> <td style="background-color: transparent;" class="xl65"><font size="2" class="_mt"><font class="_mt" style="font-family: Lucida Console;"><font class="_mt">&nbsp;</font>50-70%<font class="_mt">&nbsp;&nbsp;</font></font></font></td> <td style="background-color: transparent;" class="xl65"><font size="2" class="_mt"><font class="_mt" style="font-family: Lucida Console;"><font class="_mt">&nbsp;</font>30-50%<font class="_mt">&nbsp;</font></font></font></td> <td style="background-color: transparent;" class="xl65"><font size="2" class="_mt"><font class="_mt" style="font-family: Lucida Console;"><font class="_mt">&nbsp;</font>0-4%</font></font></td></tr></table> <p style="margin-top: 0px; margin-bottom: 0px;">&nbsp;</p> <p style="margin-top: 0px; margin-bottom: 0px;"><font size="2" class="_mt" style="font-family: Lucida Console;">The intended benefit of asset allocation is that the diversification provided by allocating assets among asset classes, such as equity and debt securities, reduces volatility over the long-term. The subadviser, subject to the investment adviser's supervision, allocates the portfolio's assets among the underlying funds using a two-step process. First, the subadviser seeks to develop an optimal model allocation among underlying funds in different asset classes using an analysis that looks at forecast returns, standard deviations in historical returns and the correlation of the performance of different asset classes. The subadviser then invests the assets in underlying funds that invest in those asset classes. The subadviser's analysis in selecting and weighting the underlying funds is based on quantitative and qualitative measures. Periodically, the subadviser may recommend the rebalancing of the portfolio's assets among asset classes and underlying funds. Decisions to sell shares of the underlying funds are made for cash flow purposes, as a result of periodic rebalancing of the portfolio's portfolio holdings, or as an adjustment to the portfolio's target allocation.</font></p> <p style="margin-top: 0px; margin-bottom: 0px;"><font size="2" class="_mt" style="font-family: Lucida Console;"> </font>&nbsp;</p> <p style="margin-top: 0px; margin-bottom: 0px;"><font size="2" class="_mt" style="font-family: Lucida Console;">From time to time the portfolio's investment adviser may select new or different underlying funds other than those listed in the prospectus without prior approval or notice to shareholders.</font></p></div> </div>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringPrincipal investment strategies of the Fund. Summarize how the Fund intends to achieve its investment objectives by identifying the Fund's principal investment strategies (including the type or types of securities in which the Fund invests or will invest principally) and any policy to concentrate in securities of issuers in a particular industry or group of industries.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection a falsefalseStrategy Narrative [Text Block]20false0rr_RiskHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div class="MetaData"> <p><font size="2" class="_mt" style="font-family: Lucida Console;">PRINCIPAL RISKS OF INVESTING IN THE PORTFOLIO</font></p></div>falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNarrative Risk Disclosure.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 1 -Subsection b falsefalseRisk [Heading]21false0rr_RiskNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div> <div class="MetaData"> <p><font size="2" class="_mt" style="font-family: Lucida Console;"><font class="_mt"><font size="2" class="_mt" style="font-family: Lucida Console;">You could lose money on your investment in the portfolio. </font></font>As with any mutual fund, there is no guarantee that the portfolio will achieve its objectives. Following is a summary description of principal risks of investing in the portfolio.</font></p> <p><font size="2" class="_mt" style="font-family: Lucida Console;">For purposes of this section, "the portfolio" means the portfolio or, where applicable, an underlying fund. </font></p> <p><font size="2" class="_mt" style="font-family: Lucida Console;">MARKET RISK. The values of securities held by the portfolio may fall due to general market conditions, such as real or perceived adverse economic, political, or regulatory conditions, inflation, changes in interest or currency rates or adverse investor sentiment. Adverse market conditions may be prolonged and may not have the same impact on all types of securities. The values of securities may fall due to factors affecting a particular issuer, industry or the securities market as a whole. The stock market may perform poorly relative to other </font><font size="2" class="_mt" style="font-family: Lucida Console;">investments (this risk may be greater in the short term). The recent global financial crisis has caused a significant decline in the value and liquidity of many securities, including securities held by the portfolio. In response to the crisis, the U.S. government and the Federal Reserve have taken steps to support financial markets. The withdrawal of this support could also negatively affect the value and liquidity of certain securities. In addition, legislation recently enacted in the U.S. calls for changes in many aspects of financial regulation. The impact of the legislation on the markets, and the practical implications for market participants, may not be known for some time. The portfolio may experience a substantial or complete loss on any individual security.</font></p> <p><br /><font size="2" class="_mt" style="font-family: Lucida Console;">FUND OF FUNDS STRUCTURE AND LAYERING OF FEES. Each of the underlying funds has its own investment risks that can affect the value of the underlying funds' shares and therefore the net asset value of the portfolio. In addition to the portfolio's operating expenses, the portfolio indirectly pays a portion of the expenses incurred by the underlying funds. Consequently, an investment in the portfolio entails more direct and indirect expenses than a direct investment in the underlying funds. Also, one underlying fund may buy the same security that another underlying fund is selling. You would indirectly bear the costs of both trades without achieving any investment purpose. These transactions may also generate taxable gains. If you are a taxable shareholder, you may receive taxable gains from portfolio transactions by the underlying funds and from the portfolio's transactions in shares of the underlying funds.</font></p> <p><font size="2" class="_mt" style="font-family: Lucida Console;">ALLOCATION RISK. The subadviser's evaluation of asset classes and market sectors in developing an allocation model, and its selection and weighting of underlying funds within the allocation model, may prove to be incorrect. To the extent that the portfolio invests a significant percentage of its assets in any one underlying fund, the portfolio will be subject to a greater degree to the risks particular to that underlying fund, and may experience greater volatility as a result.</font></p> <p style="margin-top: 0px; margin-bottom: 0px;"><font size="2" class="_mt" style="font-family: Lucida Console;">ASSET CLASS VARIATION RISK. The underlying funds invest principally in the securities constituting their asset class (i.e., equity or fixed income).However, under normal market conditions, an underlying fund may vary the percentage of its assets in these securities (subject to any applicable regulatory requirements). Depending upon the percentage of securities in a particular asset class held by the underlying funds at any given time, and the percentage of the portfolio's assets invested in various underlying funds, the portfolio's actual exposure to the securities in a particular asset class may vary substantially from its target asset allocation for that asset class.</font></p> <p style="margin-top: 0px; margin-bottom: 0px;"><font size="2" class="_mt" style="font-family: Lucida Console;"> </font><br /><font size="2" class="_mt" style="font-family: Lucida Console;">RISK OF INCREASE IN EXPENSES. Your actual costs of investing in the portfolio may be higher than the expenses shown in "Annual portfolio operating expenses" for a variety of reasons. For example, expense ratios may be higher than those shown if overall net assets decrease. Net assets are more likely to decrease and portfolio expense ratios are more likely to increase when markets are volatile.</font></p> <p><font size="2" class="_mt" style="font-family: Lucida Console;">PRINCIPAL RISKS OF INVESTING IN THE UNDERLYING FUNDS</font></p> <p><font size="2" class="_mt" style="font-family: Lucida Console;">RISKS OF EQUITY INVESTMENTS. Equity securities are more volatile and carry &nbsp;more risks than some other forms of investment. Risks of investing in underlying equity funds may include:</font></p> <p style="margin-top: 0px; margin-bottom: 0px;"><font size="2" class="_mt" style="font-family: Lucida Console;">VALUE STYLE RISK. The prices of securities the adviser believes are&nbsp;undervalued may not appreciate as expected or may go down. Value stocks may fall out of favor with investors and underperform the overall equity&nbsp;market.</font></p><font size="2" class="_mt" style="font-family: Lucida Console;"> </font> <p style="margin-top: 0px; margin-bottom: 0px;"><br /><font size="2" class="_mt" style="font-family: Lucida Console;">GROWTH STYLE RISK. The portfolio's investments may not have the growth&nbsp;potential originally expected. Growth stocks may fall out of favor with investors and underperform the overall equity market.</font></p> <p style="margin-top: 0px; margin-bottom: 0px;"><font size="2" class="_mt" style="font-family: Lucida Console;"> </font>&nbsp;</p> <p style="margin-top: 0px; margin-bottom: 0px;"><font size="2" class="_mt" style="font-family: Lucida Console;">SMALL AND MID-SIZE COMPANIES RISK. Compared to large companies, small- and&nbsp;mid-size companies, and the market for their equity securities, may be&nbsp;&nbsp; more sensitive to changes in earnings results and investor expectations, have&nbsp;more limited product lines and capital resources, experience sharper swings in market values, have limited liquidity, be harder to value or to sell at the times and prices the adviser thinks appropriate, and offer greater potential for gain and loss.</font></p> <p style="margin-top: 0px; margin-bottom: 0px;">&nbsp;</p> <p style="margin-top: 0px; margin-bottom: 0px;"><font size="2" class="_mt" style="font-family: Lucida Console;">RISKS OF INVESTMENTS IN REITS. Investing in REITs involves unique risks. They are significantly affected by the market for real estate and are dependent upon management skills and cash flow. REITs may have lower trading volumes and may be subject to more abrupt or erratic price movements than the overall securities markets. In addition to its own expenses, the portfolio will indirectly bear its proportionate share of any management and other expenses paid by REITs in which it invests. Many real estate companies, including REITs, utilize leverage.</font></p> <p style="margin-top: 0px; margin-bottom: 0px;">&nbsp;</p> <p style="margin-top: 0px; margin-bottom: 0px;"><font size="2" class="_mt" style="font-family: Lucida Console;">SECURITIES LENDING RISK. When lending securities in its portfolio, the portfolio will continue to have market risk and other risks associated with owning the securities on loan, as well as the risks associated with the investment of the cash collateral received in connection with the loan. Securities lending is also subject to the risk that the borrower fails to return a loaned security, and/or there is a shortfall on the collateral to be returned to the borrower, and the risk that the portfolio is unable to recall a security in time to exercise voting rights or sell the security.</font></p> <p><font size="2" class="_mt" style="font-family: Lucida Console;">RISKS OF FIXED INCOME INVESTMENTS. Risks of investing in underlying fixed income funds may include:</font></p> <p><font size="2" class="_mt" style="font-family: Lucida Console;">INTEREST RATE RISK. Interest rates may go up, causing the value of the portfolio's investments to decline (this risk may be greater for securities with longer maturities).</font></p> <p><font size="2" class="_mt" style="font-family: Lucida Console;">CREDIT RISK. If an issuer or guarantor of a security held by the portfolio or a counterparty to a financial contract with the portfolio defaults on its obligation to pay principal and/or interest, has its credit rating downgraded or is perceived to be less creditworthy, or the credit quality or value of any underlying assets declines, the value of your investment will decline. Credit risk is broadly gauged by the credit ratings of the securities in which the portfolio invests. However, ratings are only the opinions of the companies issuing them and are not guarantees as to quality. Junk bonds have a higher risk of default or are already in default and are considered speculative.</font></p> <p><font size="2" class="_mt" style="font-family: Lucida Console;">PREPAYMENT OR CALL RISK. During periods of declining interest rates, the issuer of a security (or borrowers in a pool of loans) may prepay principal earlier than scheduled, forcing the portfolio to reinvest in lower yielding securities. The portfolio also may lose any premium it paid on the security.</font></p> <p><font size="2" class="_mt" style="font-family: Lucida Console;">EXTENSION RISK. During periods of rising interest rates, the average life of certain types of securities may be extended because of slower than expected principal payments. This may lock in a below market interest rate, increase the security's duration (the estimated period until the security is paid in full) and reduce the value of the security.</font></p> <p style="margin-top: 0px; margin-bottom: 0px;"><font size="2" class="_mt" style="font-family: Lucida Console;">U.S. GOVERNMENT AGENCY OBLIGATIONS RISK. The portfolio invests in obligations issued by agencies and instrumentalities of the U.S. government. Government sponsored entities such as Federal National Mortgage Association (Fannie Mae), Federal Home Loan Mortgage Corporation (Freddie Mac) and the Federal Home Loan Banks (FHLBs), although chartered or sponsored by Congress, are not funded by congressional appropriations and the debt and mortgage-backed securities issued by them are neither guaranteed nor issued by the U.S. government. Although the U.S. government has provided financial support to Fannie Mae and Freddie Mac in the past, there can be no assurance that it will support these or other government sponsored entities in the future.</font></p> <p style="margin-top: 0px; margin-bottom: 0px;">&nbsp;</p> <p style="margin-top: 0px; margin-bottom: 0px;"><font size="2" class="_mt" style="font-family: Lucida Console;">MORTGAGE-RELATED AND ASSET-BACKED SECURITIES RISK. The value of mortgage-related and asset-backed securities will be influenced by factors affecting the housing market and the assets underlying such securities. As a result, during periods of declining asset value, difficult or frozen credit markets, swings in interest rates, or deteriorating economic conditions, mortgage-related and asset-backed securities may decline in </font><font size="2" class="_mt" style="font-family: Lucida Console;">value, face valuation difficulties, become more volatile and/or become illiquid. Additionally, during such periods and also under normal conditions, these securities are also subject to prepayment and call risk. Some of these securities may receive little or no collateral protection from the underlying assets and are thus subject to the risk of default. The risk of such defaults is generally higher in the case of mortgage-backed investments that include so-called "sub-prime" mortgages. The structure of some of </font><font size="2" class="_mt" style="font-family: Lucida Console;">these securities may be complex and there may be less available information than for other types of debt securities. Upon the occurrence of certain triggering events or defaults, the portfolio may become the holder of underlying assets at a time when those assets may be difficult to sell or may be sold only at a loss.</font></p> <p><font size="2" class="_mt" style="font-family: Lucida Console;">RISKS OF SUBORDINATED SECURITIES. A holder of securities that are subordinated or "junior" to more senior securities of an issuer is entitled to payment after holders of more senior securities of the issuer. Subordinated securities are more likely to suffer a credit loss than non-subordinated securities of the same issuer, any loss incurred by the subordinated securities is likely to be proportionately greater, and any recovery of interest or principal may take more time. As a result, even a perceived decline in creditworthiness of the issuer is likely to have a greater impact on them.</font></p> <p><font size="2" class="_mt" style="font-family: Lucida Console;">HIGH YIELD OR "JUNK" BOND RISK. Debt securities that are below investment grade, called "junk bonds," are speculative, have a higher risk of default or are already in default, tend to be less liquid and are more difficult to value than higher grade securities. Junk bonds tend to be volatile and more susceptible to adverse events and negative sentiments.</font></p> <p><font size="2" class="_mt" style="font-family: Lucida Console;">RISKS OF INVESTING IN EVENT-LINKED BONDS. The return of principal and the payment of interest on "event-linked" bonds are contingent on the non-occurrence of a pre-defined "trigger" event, such as a hurricane or an earthquake of a specific magnitude. In addition to the specified trigger events, event-linked bonds may expose the portfolio to other risks, including but not limited to issuer (credit) default, adverse regulatory or jurisdictional interpretations and adverse tax consequences.</font></p> <p><font size="2" class="_mt" style="font-family: Lucida Console;">RISKS OF INVESTING IN FLOATING RATE LOANS. The value of collateral, if any, securing a floating rate loan can decline or may be insufficient to meet the issuer's obligations or may be difficult to liquidate. No active trading market may exist for many floating rate loans, and many loans are subject to restrictions on resale.</font></p> <p><font size="2" class="_mt" style="font-family: Lucida Console;">RISKS OF INVERSE FLOATING RATE OBLIGATIONS. The interest rate on inverse floating rate obligations will generally decrease as short-term interest rates increase, and increase as short-term rates decrease. Due to their leveraged structure, the sensitivity of the market value of an inverse floating rate obligation to changes in interest rates is generally greater than a comparable long-term bond issued by the same issuer and with similar credit quality, redemption and maturity provisions. Inverse floating rate obligations may be volatile and involve leverage risk.</font></p> <p style="margin-top: 0px; margin-bottom: 0px;"><font size="2" class="_mt" style="font-family: Lucida Console;">RISKS OF EQUITY AND FIXED INCOME INVESTMENTS. Risks of investing in underlying equity and fixed income funds may include:</font></p> <p style="margin-top: 0px; margin-bottom: 0px;">&nbsp;</p> <p style="margin-top: 0px; margin-bottom: 0px;"><font size="2" class="_mt" style="font-family: Lucida Console;">PORTFOLIO SELECTION RISK. The adviser's judgment about the attractiveness, relative value or potential appreciation of an equity security, or about&nbsp;the quality, relative yield or relative value of a fixed income security, or about a particular sector, region or market segment, or about an investment strategy, or about interest rates, may prove to be incorrect.</font></p> <p><font size="2" class="_mt" style="font-family: Lucida Console;">LIQUIDITY RISK. Some securities held by the portfolio may be difficult to sell, or illiquid, particularly during times of market turmoil. Illiquid securities also may be difficult to value. If the portfolio is forced to sell an illiquid asset to meet redemption requests or other cash needs, the portfolio may be forced to sell at a loss.</font></p> <p style="margin-top: 0px; margin-bottom: 0px;"><font size="2" class="_mt" style="font-family: Lucida Console;">MARKET SEGMENT RISK. To the extent the portfolio emphasizes, from time to time, investments in a market segment, the portfolio will be subject to a greater degree to the risks particular to that segment, and may experience greater market fluctuation than a portfolio without the same focus.</font></p> <p style="margin-top: 0px; margin-bottom: 0px;">&nbsp;</p> <p style="margin-top: 0px; margin-bottom: 0px;"><font size="2" class="_mt" style="font-family: Lucida Console;">RISKS OF NON-U.S. INVESTMENTS. Investing in non-U.S. issuers may involve unique risks compared to investing in securities of U.S. issuers. These risks are more pronounced for issuers in emerging markets or to the extent that the portfolio invests significantly in one region or country. These risks may include </font><font size="2" class="_mt" style="font-family: Lucida Console;">different financial reporting practices and regulatory standards, less liquid trading markets, currency risks, changes in economic, political, regulatory and social conditions, sustained economic downturns, tax burdens, and investment and repatriation restrictions. Non-U.S. issuers may be located in parts of the world that have historically been prone to natural disasters.</font></p> <p><font size="2" class="_mt" style="font-family: Lucida Console;">DERIVATIVES RISK. Using derivatives exposes the portfolio to additional risks, may increase the volatility of the portfolio's net asset value and may not provide the result intended. Derivatives may have a leveraging effect on the portfolio. Changes in a derivative's value may not correlate well with the referenced asset or metric. The portfolio also may have to sell assets at inopportune times to satisfy its obligations. Derivatives may be difficult to sell, unwind or value, and the counterparty may default on its obligations to the portfolio. Recent legislation calls for new regulation of the derivatives markets. The extent and impact of the regulation is not yet known and may not be known for some time. New regulation of derivatives may make them more costly, may limit their availability, or may otherwise adversely affect their value or performance.</font></p> <p style="margin-top: 0px; margin-bottom: 0px;">&nbsp;</p> <p style="margin-top: 0px; margin-bottom: 0px;"><font size="2" class="_mt" style="font-family: Lucida Console;">CREDIT DEFAULT SWAP RISK. Credit default swap contracts, a type of derivative instrument, involve special risks and may result in losses to the portfolio. Credit default swaps may in some cases be illiquid, and they increase credit risk since the portfolio has exposure to both the issuer of the referenced obligation and the counterparty to the credit default swap. The absence of a central exchange or market for swap transactions led, in some instances, to difficulties in trading and valuation, especially in the event of market disruptions. Recent legislation, noted above, will require most swaps to be executed through a centralized exchange or regulated facility and be cleared through a regulated clearinghouse. The swap market could be disrupted or limited as a result of this legislation, which could adversely affect the portfolio. Moreover, the establishment of a centralized exchange or market for swap transactions may not result in swaps being easier to trade or value.</font></p> <p style="margin-top: 0px; margin-bottom: 0px;">&nbsp;</p> <p style="margin-top: 0px; margin-bottom: 0px;"><font size="2" class="_mt" style="font-family: Lucida Console;">LEVERAGING RISK. The value of your investment may be more volatile and other risks tend to be compounded if the portfolio borrows or uses derivatives or other investments that have embedded leverage. Leverage generally magnifies the effect of any increase or decrease in the value of the portfolio's underlying assets or creates investment risk with respect to a larger pool of assets than the portfolio would otherwise have. Engaging in such transactions may cause the portfolio to liquidate positions when it may not be advantageous to do so to satisfy its obligations or meet segregation requirements.</font></p> <p><font size="2" class="_mt" style="font-family: Lucida Console;">COMMODITY INVESTMENTS RISK. Certain underlying funds may invest directly or indirectly in commodities. Exposure to the commodities markets may subject the fund to greater volatility than investments in other securities. The value of commodity-linked derivatives may be affected by changes in overall market movements, commodity index volatility, changes in interest rates, or factors affecting a particular industry or commodity, such as drought, floods, weather, livestock disease, embargoes, tariffs and international economic, political and regulatory developments. The prices of energy, industrial metals, precious metals, agriculture and livestock sector commodities may fluctuate widely due to factors such as changes in value, supply and demand and governmental regulatory policies. Commodity-related investments may be more volatile than the underlying commodities.</font></p> <div class="MetaData"> <p><font size="2" class="_mt" style="font-family: Lucida Console;">NON-DIVERSIFICATION RISK. To the extent an underlying fund is not diversified, the underlying fund can invest a higher percentage of its assets in the securities of any one or more issuers than a diversified fund. Being non-diversified may magnify the portfolio's and the underlying fund's losses from adverse events affecting a particular issuer.</font></p></div> <p style="margin-top: 0px; margin-bottom: 0px;"><font size="2" class="_mt" style="font-family: Lucida Console;">PORTFOLIO TURNOVER RISK. If the portfolio does a lot of trading, it may incur additional operating expenses, which would reduce performance.</font></p> <p style="margin-top: 0px; margin-bottom: 0px;"><font size="2" class="_mt" style="font-family: Lucida Console;"> </font><br /><font size="2" class="_mt" style="font-family: Lucida Console;">Please note that there are many other factors that could adversely affect your investment and that could prevent the portfolio from achieving its goals.</font></p> <div class="MetaData"> <p><font size="2" class="_mt" style="font-family: Lucida Console;">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.</font></p></div></div> </div>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringNarrative Risk Disclosure. A Fund may, in responding to this Item, describe the types of investors for whom the Fund is intended or the types of investment goals that may be consistent with an investment in the Fund.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 1 -Subparagraph i -Clause instruction -Subsection b falsefalseRisk Narrative [Text Block]22false0rr_BarChartAndPerformanceTableHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div class="MetaData"> <p style="margin-top: 0px; margin-bottom: 0px;"><font size="2" class="_mt" style="font-family: Lucida Console;">THE PORTFOLIO'S PAST PERFORMANCE</font></p></div>falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringRisk/Return Bar Chart and Table.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subsection b falsefalseBar Chart and Performance Table [Heading]23false0rr_PerformanceNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div> <div class="MetaData"> <p style="margin-top: 0px; margin-bottom: 0px;"><font size="2" class="_mt" style="font-family: Lucida Console;"><font class="_mt"><font size="2" class="_mt" style="font-family: Lucida Console;">The bar chart and table indicate the risks and volatility of an investment in the portfolio by showing how the portfolio has performed in the past. The bar chart shows changes in the performance of the portfolio's Class I shares from calendar year to calendar year. </font></font>The table shows the average annual total returns for Class I shares of the portfolio over time and compares these returns to the returns of the Standard &amp; Poor's 500 Index and the Barclays Capital Aggregate Bond Index, each a broad-based measure of market performance that has characteristics relevant to the portfolio's investment strategies.</font></p> <p style="margin-top: 0px; margin-bottom: 0px;">&nbsp;</p> <div class="MetaData"> <p style="margin-top: 0px; margin-bottom: 0px;"><font size="2" class="_mt" style="font-family: Lucida Console;">The bar chart and table do not reflect any fees or expenses payable with respect to a Variable Contract. Such fees and expenses will reduce your return.</font></p></div> <p style="margin-top: 0px; margin-bottom: 0px;">&nbsp;</p> <p style="margin-top: 0px; margin-bottom: 0px;">&nbsp;</p><font size="2" class="_mt" style="font-family: Lucida Console;"><font class="_mt"><font size="2" class="_mt" style="font-family: Lucida Console;">The portfolio's past performance does not necessarily indicate how it will perform in the future<font size="2" class="_mt" style="font-family: Lucida Console;">.</font></font></font> </font> <p>&nbsp;</p></div> </div>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringRisk/Return Bar Chart and Table.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subsection b falsefalsePerformance Narrative [Text Block]24false0rr_BarChartHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div class="MetaData"> <p style="margin-top: 0px; margin-bottom: 0px;"><font size="2" class="_mt" style="font-family: Lucida Console;">ANNUAL RETURN CLASS I SHARES (%)</font></p> <p style="margin-top: 0px; margin-bottom: 0px;"><font size="2" class="_mt" style="font-family: Lucida Console;">(Year ended December 31)</font></p></div>falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringRisk/Return Bar Chart and Table.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subsection b falsefalseBar Chart [Heading]25false0rr_BarChartTableTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div> &lt;div style="display:none;" &gt;~ http://www.pioneerinvestments.com/role/ScheduleAnnualTotalReturnsPioneerIbbotsonModerateAllocationVctPortfolioClassIBarChart column period compact * column primary compact * row dei_DocumentInformationDocumentAxis compact cik0000930709_ClassISharesMember row dei_LegalEntityAxis compact cik0000930709_S000010177Member row rr_ProspectusShareClassAxis compact * ~&lt;/div&gt; </div>falsefalseBarChart15.jpg<div> &lt;div style="display:none;" &gt;~ http://www.pioneerinvestments.com/role/ScheduleAnnualTotalReturnsPioneerIbbotsonModerateAllocationVctPortfolioClassIBarChart column period compact * column primary compact * row dei_DocumentInformationDocumentAxis compact cik0000930709_ClassISharesMember row dei_LegalEntityAxis compact cik0000930709_S000010177Member row rr_ProspectusShareClassAxis compact * ~&lt;/div&gt; </div>falsehttp://www.pioneerinvestments.com/role/ScheduleAnnualTotalReturnsPioneerIbbotsonModerateAllocationVctPortfolioClassIBarChartfalsefalse001506 - Schedule - Annual Total Returns - {Pioneer Ibbotson Moderate Allocation VCT Portfolio} {Class I} {Bar Chart}truefalsefalse1falseColumnperiodPeriod*ColumnprimaryElement*ColumnunitUnit*10false0rr_AnnualReturn2006rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.10710.1071falsefalsefalsetruefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalseAnnual Return 2006duration2011-05-01T00:00:002011-05-01T00:00:00Unit12Standardhttp://www.xbrl.org/2003/iso4217USDiso42170falseUSDfalsefalse$2falseColumnperiodPeriod*ColumnprimaryElement*ColumnunitUnit*11false0rr_AnnualReturn2007rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.05950.0595falsefalsefalsetruefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph instructions -Clause 3 -Exhibit a -Subsection b falsefalseAnnual Return 2007duration2011-05-01T00:00:002011-05-01T00:00:00Unit12Standardhttp://www.xbrl.org/2003/iso4217USDiso42170falseUSDfalsefalse$3falseColumnperiodPeriod*ColumnprimaryElement*ColumnunitUnit*12false0rr_AnnualReturn2008rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse-0.3081-0.3081falsefalsefalsetruefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalseAnnual Return 2008duration2011-05-01T00:00:002011-05-01T00:00:00Unit12Standardhttp://www.xbrl.org/2003/iso4217USDiso42170falseUSDfalsefalse$4falseColumnperiodPeriod*ColumnprimaryElement*ColumnunitUnit*13false0rr_AnnualReturn2009rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.31290.3129falsefalsefalsetruefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph instructions -Clause 3 -Exhibit a -Subsection b falsefalseAnnual Return 2009duration2011-05-01T00:00:002011-05-01T00:00:00Unit12Standardhttp://www.xbrl.org/2003/iso4217USDiso42170falseUSDfalsefalse$5falseColumnperiodPeriod*ColumnprimaryElement*ColumnunitUnit*14false0rr_AnnualReturn2010rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.14140.1414falsefalsefalsetruefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalseAnnual Return 2010duration2011-05-01T00:00:002011-05-01T00:00:00Unit12Standardhttp://www.xbrl.org/2003/iso4217USDiso42170falseUSDfalsefalse$1falseRowdei_DocumentInformationDocumentAxisAxiscik0000930709_ClassISharesMemberRowdei_LegalEntityAxisAxiscik0000930709_S000010177MemberRowrr_ProspectusShareClassAxisAxis*falsefalseClass I Sharesdei_DocumentInformationDocumentAxisxbrldihttp://xbrl.org/2006/xbrldicik0000930709_ClassISharesMemberdei_DocumentInformationDocumentAxisexplicitMemberfalsefalsePioneer Ibbotson Moderate Allocation VCT Portfoliodei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldicik0000930709_S000010177Memberdei_LegalEntityAxisexplicitMemberfalsefalseClass Irr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldicik0000930709_C000043518Memberrr_ProspectusShareClassAxisexplicitMemberClass I SharesPioneer Ibbotson Moderate Allocation VCT PortfolioClass I0truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.10710.1071falsefalsefalsetruefalse2truetruefalse0.05950.0595falsefalsefalsetruefalse3truetruefalse-0.3081-0.3081falsefalsefalsetruefalse4truetruefalse0.31290.3129falsefalsefalsetruefalse5truetruefalse0.14140.1414falsefalsefalsetruefalseOthernanafalsefalseClass I Shares Pioneer Ibbotson Moderate Allocation VCT Portfolio Class I51Annual Total Returns - UnKnownUnKnownUnKnownUnKnownfalsetrueColumnperiodPeriod*ColumnprimaryElement*ColumnunitUnit*Rowdei_DocumentInformationDocumentAxisAxiscik0000930709_ClassISharesMemberRowdei_LegalEntityAxisAxiscik0000930709_S000010177MemberRowrr_ProspectusShareClassAxisAxis*falsefalsefalseOtherus-types:textBlockItemTypestringContains a command for the SEC Viewer for the role corresponding to BarChartData.No authoritative reference available.falsefalseBar Chart [Table]26false0rr_BarChartClosingTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div> <div class="MetaData"> <p style="margin-top: 0px; margin-bottom: 0px;">&nbsp;</p> <p style="margin-top: 0px; margin-bottom: 0px;"><font size="2" class="_mt" style="font-family: Lucida Console;">For the period covered by the bar chart:</font></p> <p style="margin-top: 0px; margin-bottom: 0px;"><font size="2" class="_mt" style="font-family: Lucida Console;"><font class="_mt"><font size="2" class="_mt" style="font-family: Lucida Console;">THE HIGHEST CALENDAR QUARTERLY RETURN </font></font>WAS 16.41% (04/01/2009 TO 06/30/2009)</font></p> <p style="margin-top: 0px; margin-bottom: 0px;"><font size="2" class="_mt" style="font-family: Lucida Console;"><font class="_mt"><font size="2" class="_mt" style="font-family: Lucida Console;">THE LOWEST CALENDAR QUARTERLY RETURN </font></font>WAS -18.17% (10/01/2008 TO 12/31/2008)</font></p></div> </div>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. 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no deduction for fees, expenses or taxes)Standard00truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.15060.1506falsefalsefalsetruefalse2truetruetrue0.02290.0229falsefalsefalsetruefalse3truetruetrue0.03080.0308falsefalsefalsetruefalse4falsefalsefalse00falsefalsefalsefalsefalseOthernanafalsefalseStandard & Poor's 500 Index (reflects no deduction for fees, expenses or taxes)3falseRowdei_DocumentInformationDocumentAxisAxiscik0000930709_ClassISharesMemberRowdei_LegalEntityAxisAxiscik0000930709_S000010177MemberRowrr_ProspectusShareClassAxisAxis*Rowrr_PerformanceMeasureAxisAxis*RowunitUnit*falsefalseClass I Sharesdei_DocumentInformationDocumentAxisxbrldihttp://xbrl.org/2006/xbrldicik0000930709_ClassISharesMemberdei_DocumentInformationDocumentAxisexplicitMemberfalsefalsePioneer Ibbotson Moderate Allocation VCT Portfoliodei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldicik0000930709_S000010177Memberdei_LegalEntityAxisexplicitMembertruefalseShare Classesrr_ProspectusShareClassAxisrr_ShareClassDomainrr_ProspectusShareClassAxisexplicitMemberfalsefalseBarclays Capital Aggregate Bond Index (reflects no deduction for fees, expenses or taxes)rr_PerformanceMeasureAxisxbrldihttp://xbrl.org/2006/xbrldicik0000930709_BarclaysCapitalAggregateBondIndexMemberrr_PerformanceMeasureAxisexplicitMemberClass I SharesPioneer Ibbotson Moderate Allocation VCT PortfolioShare ClassesBarclays Capital Aggregate Bond Index (reflects no deduction for fees, expenses or taxes)Standard00truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.06540.0654falsefalsefalsetruefalse2truetruetrue0.05800.0580falsefalsefalsetruefalse3truetruetrue0.05510.0551falsefalsefalsetruefalse4falsefalsefalse00falsefalsefalsefalsefalseOthernanafalsefalseBarclays Capital Aggregate Bond Index (reflects no deduction for fees, expenses or taxes)43Average Annual Total Returns - Class I Shares Pioneer Ibbotson Moderate Allocation VCT PortfolioUnKnownUnKnownUnKnownUnKnownfalsetrueColumnperiodPeriod*ColumnprimaryElement*Rowdei_DocumentInformationDocumentAxisAxiscik0000930709_ClassISharesMemberRowdei_LegalEntityAxisAxiscik0000930709_S000010177MemberRowrr_ProspectusShareClassAxisAxis*Rowrr_PerformanceMeasureAxisAxis*RowunitUnit*falsefalsefalseOtherus-types:textBlockItemTypestringContains a command for the SEC Viewer for the role corresponding to PerformanceTableData.No authoritative reference available.falsefalsePerformance [Table]127Risk/Return Summary - (Pioneer Ibbotson Moderate Allocation VCT Portfolio) (Class I) (Class I Shares, Pioneer Ibbotson Moderate Allocation VCT Portfolio)UnKnownUnKnownUnKnownUnKnownfalsetrue