Label	Element	Value
Risk/Return:	rr_RiskReturnAbstract
Registrant Name	dei_EntityRegistrantName	AIM VARIABLE INSURANCE FUNDS (INVESCO VARIABLE INSURANCE FUNDS)
Prospectus Date	rr_ProspectusDate	Apr. 30, 2012
Series II shares | Invesco V.I. Small Cap Equity Fund
Risk/Return:	rr_RiskReturnAbstract
Risk/Return [Heading]	rr_RiskReturnHeading	Fund Summary - Invesco V.I. Small Cap Equity Fund - Series II shares
Objective [Heading]	rr_ObjectiveHeading	Investment Objective(s)
Objective, Primary [Text Block]	rr_ObjectivePrimaryTextBlock	The Fund’s investment objective is long-term growth of capital.
Expense [Heading]	rr_ExpenseHeading	Fees and Expenses of the Fund
Expense Narrative [Text Block]	rr_ExpenseNarrativeTextBlock	This table describes the fees and expenses that are incurred, directly or indirectly, when a variable product owner buys, holds, or redeems interest in an insurance company separate account that invests in the Series II shares of the Fund but does not represent the effect of any fees or other expenses assessed in connection with your variable product, and if it did, expenses would be higher.
Shareholder Fees Caption [Text]	rr_ShareholderFeesCaption	Shareholder Fees (fees paid directly from your investment)
Operating Expenses Caption [Text]	rr_OperatingExpensesCaption	Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)
Fee Waiver or Reimbursement over Assets, Date of Termination	rr_FeeWaiverOrReimbursementOverAssetsDateOfTermination	April 30, 2013
Portfolio Turnover [Heading]	rr_PortfolioTurnoverHeading	Portfolio Turnover.
Portfolio Turnover [Text Block]	rr_PortfolioTurnoverTextBlock	The Fund 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 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 61% of the average value of its portfolio.
Portfolio Turnover, Rate	rr_PortfolioTurnoverRate	61.00%
Expense Example [Heading]	rr_ExpenseExampleHeading	Example.
Expense Example Narrative [Text Block]	rr_ExpenseExampleNarrativeTextBlock	This Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. This Example does not represent the effect of any fees or expenses assessed in connection with your variable product, and if it did, expenses would be higher. The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return each year and that the Fund’s operating expenses remain the same. Although your actual costs may be higher or lower, based on these assumptions, your costs would be:
Strategy [Heading]	rr_StrategyHeading	Principal Investment Strategies of the Fund
Strategy Narrative [Text Block]	rr_StrategyNarrativeTextBlock	The Fund invests, under normal circumstances, at least 80% of its net assets (plus any borrowings for investment purposes) in equity securities of small-capitalization issuers. In complying with the 80% investment requirement, the Fund may include synthetic securities that have economic characteristics similar to the Fund’s direct investments that are counted toward the 80% investment requirement. The Fund considers a company to be a small-capitalization issuer if it has a market capitalization, at the time of purchase, no larger than the largest capitalized issuer included in the Russell 2000® Index during the most recent 11-month period (based on month-end data) plus the most recent data during the current month. As of December 31, 2011, the capitalization of companies in the Russell 2000® Index ranged from $16 million to $3.7 billion. The Fund may also invest up to 25% of its total assets in foreign securities. In selecting investments, the portfolio managers utilize a disciplined portfolio construction process that diversifies the Fund based on the industry group diversification of the S&P Small Cap 600 Index and generally maintains a maximum deviation from index industry groups of 350 basis points. The security selection process is based on a three-step process that includes fundamental, valuation and timeliness analysis focused on identifying high quality, fundamentally sound issuers operating in an attractive industry; attractively valued securities given their growth potential over a one- to two-year horizon; and the “timeliness” of a purchase, respectively. The timeliness analysis includes a review of relative price strength, trading volume characteristics and trend analysis to look for signs of deterioration. If a stock shows signs of deterioration, it is generally not considered as a candidate for the portfolio. The portfolio managers consider selling a security if the investment thesis for owning the security is no longer valid, the stock reaches its price target or timeliness factors indicate that the risk/return characteristics of the stock as viewed in the market are no longer attractive.
Risk [Heading]	rr_RiskHeading	Principal Risks of Investing in the Fund
Risk Narrative [Text Block]	rr_RiskNarrativeTextBlock	As with any mutual fund investment, loss of money is a risk of investing. An investment in the Fund is not a deposit in a bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other governmental agency. The risks associated with an investment in the Fund can increase during times of significant market volatility. The principal risks of investing in the Fund are: Foreign Securities Risk. The Fund’s foreign investments may be affected by changes in a foreign country’s exchange rates, political and social instability, changes in economic or taxation policies, difficulties when enforcing obligations, decreased liquidity, and increased volatility. Foreign companies may be subject to less regulation resulting in less publicly available information about the companies. Management Risk. The investment techniques and risk analysis used by the Fund’s portfolio managers may not produce the desired results. Market Risk. The prices of and the income generated by the Fund’s securities may decline in response to, among other things, investor sentiment, general economic and market conditions, regional or global instability, and currency and interest rate fluctuations. Small- and Mid-Capitalization Risks. Stocks of small and mid-sized companies tend to be more vulnerable to adverse developments and may have little or no operating history or track record of success, and limited product lines, markets, management and financial resources. The securities of small and mid-sized companies may be more volatile due to less market interest and less publicly available information about the issuer. They also may be illiquid or restricted as to resale, or may trade less frequently and in smaller volumes, all of which may cause difficulty when establishing or closing a position at a desirable price. Synthetic Securities Risk. Fluctuations in the values of synthetic securities may not correlate perfectly with the instruments they are designed to replicate. Synthetic securities may be subject to interest rate changes, market price fluctuations, counterparty risk and liquidity risk.
Risk Lose Money [Text]	rr_RiskLoseMoney	As with any mutual fund investment, loss of money is a risk of investing.
Risk Not Insured Depository Institution [Text]	rr_RiskNotInsuredDepositoryInstitution	An investment in the Fund is not a deposit in a bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other governmental agency.
Bar Chart and Performance Table [Heading]	rr_BarChartAndPerformanceTableHeading	Performance Information
Performance Narrative [Text Block]	rr_PerformanceNarrativeTextBlock	The bar chart and performance table provide an indication of the risks of investing in the Fund. The bar chart shows changes in the performance of the Fund from year to year as of December 31. All performance shown assumes the reinvestment of dividends and capital gains and the effect of the Fund’s expenses. The performance table compares the Fund’s performance to that of a broad-based securities market benchmark, a style specific benchmark and a peer group benchmark with investment objectives and strategies similar to the Fund. The performance table below does not reflect charges assessed in connection with your variable product; if it did, the performance shown would be lower. The Fund’s past performance is not necessarily an indication of its future performance. Updated performance information is available on the Fund’s Web site at www.invesco.com/us. Series I shares are not offered by this prospectus. The Series I shares and Series II shares invest in the same portfolio of securities and will have substantially similar performance, except to the extent that the expenses borne by each share class differ. Series II shares have higher expenses (and therefore lower performance) resulting from its Rule 12b-1 plan, which provides for a maximum fee equal to an annual rate of 0.25% (expressed as a percentage of average daily net assets of the Fund).
Performance Information Illustrates Variability of Returns [Text]	rr_PerformanceInformationIllustratesVariabilityOfReturns	The bar chart and performance table provide an indication of the risks of investing in the Fund. The bar chart shows changes in the performance of the Fund from year to year as of December 31. All performance shown assumes the reinvestment of dividends and capital gains and the effect of the Fund’s expenses. The performance table compares the Fund’s performance to that of a broad-based securities market benchmark, a style specific benchmark and a peer group benchmark with investment objectives and strategies similar to the Fund.
Performance Availability Website Address [Text]	rr_PerformanceAvailabilityWebSiteAddress	www.invesco.com/us
Performance Past Does Not Indicate Future [Text]	rr_PerformancePastDoesNotIndicateFuture	The Fund’s past performance is not necessarily an indication of its future performance.
Bar Chart [Heading]	rr_BarChartHeading	Annual Total Returns
Bar Chart Does Not Reflect Sales Loads [Text]	rr_BarChartDoesNotReflectSalesLoads	The performance table below does not reflect charges assessed in connection with your variable product; if it did, the performance shown would be lower.
Bar Chart Closing [Text Block]	rr_BarChartClosingTextBlock	Best Quarter (ended June 30, 2009): 20.04% Worst Quarter (ended December 31, 2008): -23.77%
Performance Table Heading	rr_PerformanceTableHeading	Average Annual Total Returns (for the periods ended December 31, 2011)
Series II shares | Invesco V.I. Small Cap Equity Fund | Class: Series II shares
Risk/Return:	rr_RiskReturnAbstract
Maximum Sales Charge (Load) Imposed on Purchases (as a percentage of offering price)	rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice
Maximum Deferred Sales Charge (Load) (as a percentage of original purchase price or redemption proceeds, whichever is less)	rr_MaximumDeferredSalesChargeOverOther
Management Fees	rr_ManagementFeesOverAssets	0.74%
Distribution and/or Service (12b-1) Fees	rr_DistributionAndService12b1FeesOverAssets	0.25%
Other Expenses	rr_OtherExpensesOverAssets	0.32%
Total Annual Fund Operating Expenses	rr_ExpensesOverAssets	1.31%	[1]
1 Year	rr_ExpenseExampleYear01	133
3 Years	rr_ExpenseExampleYear03	415
5 Years	rr_ExpenseExampleYear05	718
10 Years	rr_ExpenseExampleYear10	1,579
2004	rr_AnnualReturn2004	9.23%
2005	rr_AnnualReturn2005	7.97%
2006	rr_AnnualReturn2006	17.12%
2007	rr_AnnualReturn2007	4.84%
2008	rr_AnnualReturn2008	(31.40%)
2009	rr_AnnualReturn2009	20.90%
2010	rr_AnnualReturn2010	28.21%
2011	rr_AnnualReturn2011	(0.98%)
Highest Quarterly Return, Label	rr_HighestQuarterlyReturnLabel	Best Quarter:
Highest Quarterly Return, Date	rr_BarChartHighestQuarterlyReturnDate	Jun. 30, 2009
Highest Quarterly Return	rr_BarChartHighestQuarterlyReturn	20.04%
Lowest Quarterly Return, Label	rr_LowestQuarterlyReturnLabel	Worst Quarter:
Lowest Quarterly Return, Date	rr_BarChartLowestQuarterlyReturnDate	Dec. 31, 2008
Lowest Quarterly Return	rr_BarChartLowestQuarterlyReturn	(23.77%)
1 Year	rr_AverageAnnualReturnYear01	(0.98%)
5 Years	rr_AverageAnnualReturnYear05	2.00%
Since Inception	rr_AverageAnnualReturnSinceInception	6.84%
Inception Date	rr_AverageAnnualReturnInceptionDate	Aug. 29, 2003
Series II shares | Invesco V.I. Small Cap Equity Fund | S&P 500 Index (reflects no deductions for fees, expenses or taxes):
Risk/Return:	rr_RiskReturnAbstract
1 Year	rr_AverageAnnualReturnYear01	2.09%
5 Years	rr_AverageAnnualReturnYear05	(0.25%)
Since Inception	rr_AverageAnnualReturnSinceInception	4.78%
Inception Date	rr_AverageAnnualReturnInceptionDate	Aug. 31, 2003
Series II shares | Invesco V.I. Small Cap Equity Fund | Russell 2000 Index (reflects no deductions for fees, expenses or taxes):
Risk/Return:	rr_RiskReturnAbstract
1 Year	rr_AverageAnnualReturnYear01	(4.18%)
5 Years	rr_AverageAnnualReturnYear05	0.15%
Since Inception	rr_AverageAnnualReturnSinceInception	6.26%
Inception Date	rr_AverageAnnualReturnInceptionDate	Aug. 31, 2003
Series II shares | Invesco V.I. Small Cap Equity Fund | Lipper VUF Small-Cap Core Funds Index:
Risk/Return:	rr_RiskReturnAbstract
1 Year	rr_AverageAnnualReturnYear01	(3.21%)
5 Years	rr_AverageAnnualReturnYear05	0.39%
Since Inception	rr_AverageAnnualReturnSinceInception	5.65%
Inception Date	rr_AverageAnnualReturnInceptionDate	Aug. 31, 2003

[1] The Adviser has contractually agreed, through at least April 30, 2013, to waive advisory fees and/or reimburse expenses of Series II shares to the extent necessary to limit Total Annual Fund Operating Expenses After Fee Waiver and/or Expense Reimbursement (excluding certain items discussed below) of Series II shares to 1.40% of average daily net assets. In determining the Adviser's obligation to waive advisory fees and/or reimburse expenses, the following expenses are not taken into account, and could cause the Total Annual Fund Operating Expenses After Fee Waiver and/or Expense Reimbursement to exceed the number reflected above: (i) interest; (ii) taxes; (iii) dividend expense on short sales; (iv) extraordinary or non-routine items, including litigation expenses; (v) expenses that the Fund has incurred but did not actually pay because of an expense offset arrangement. Unless the Board of Trustees and Invesco Advisers, Inc. mutually agree to amend or continue the fee waiver agreement, it will terminate on April 30, 2013.