rr_ProspectusTable

rr_ExpenseNarrativeTextBlock

Fees and Expenses of the Fund. This table describes the fees and expenses that you may pay if you buy and hold or redeem shares of the Fund. The accompanying prospectus of the participating insurance company provides information on initial or contingent deferred sales charges, exchange fees or redemption fees for that variable life insurance policy, variable annuity or other investment product. The fees and expenses of those products are not charged by the Fund and are not reflected in this table. Expenses would be higher if those fees were included.

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)

Portfolio Turnover [Text Block]

rr_PortfolioTurnoverTextBlock

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 rate may indicate higher transaction costs. These costs, which are not reflected in the 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 60% of the average value of its portfolio.

Strategy Narrative [Text Block]

rr_StrategyNarrativeTextBlock

Principal Investment Strategies. The Fund mainly invests in common stocks of "growth companies." Growth companies are companies whose earnings and stock prices are expected to increase at a faster rate than the overall market. These may be newer companies or established companies of any capitalization range that the portfolio manager believes may appreciate in value over the long term. Currently, the Fund primarily focuses on established companies that are similar in size to companies in the S&P 500 Index or the Russell 1000 Growth Index. The Fund primarily invests in securities of U.S. issuers but may also invest in foreign securities. The portfolio manager looks for growth companies with stock prices that he believes are reasonable in relation to overall stock market valuations. In seeking broad diversification of the Fund's portfolio among industries and market sectors, the portfolio manager focuses on a number of factors that may vary in particular cases and over time. Currently, the portfolio manager looks for:

companies in business areas that have above-average growth potential,
companies with growth rates that the portfolio manager believes are sustainable over time,
stocks with reasonable valuations relative to their growth potential.

The Fund may sell the stocks of companies that the portfolio manager believes no longer meet the above criteria, but is not required to do so.

Risk Lose Money [Text]

rr_RiskLoseMoney

The price of the Fund's shares can go up and down substantially. The value of the Fund's investments may change because of broad changes in the markets in which the Fund invests or because of poor investment selection, which could cause the Fund to underperform other funds with similar investment objectives. There is no assurance that the Fund will achieve its investment objective. When you redeem your shares, they may be worth less than what you paid for them. These risks mean that you can lose money by investing in the Fund.

Performance Narrative [Text Block]

rr_PerformanceNarrativeTextBlock

The Fund's Past Performance. The bar chart and table below provide some indication of the risks of investing in the Fund by showing changes in the Fund's Non-Service Shares performance from calendar year to calendar year and by showing how the Fund's average annual returns for the periods of time shown in the table compare with those of a broad measure of market performance. Charges imposed by the insurance accounts that invest in the Fund are not included and the returns would be lower if they were. The Fund's past investment performance is not necessarily an indication of how the Fund will perform in the future. More recent performance information is available by calling the toll-free number on the back of this prospectus and on the Fund's website at: https://www.oppenheimerfunds.com/fund/CapitalAppreciationFundVA

Bar Chart Closing [Text Block]

rr_BarChartClosingTextBlock

During the period shown, the highest return before taxes for a calendar quarter was 19.10% (2nd Qtr 09) and the lowest return before taxes for a calendar quarter was -27.73% (4th Qtr 08).

Performance Table Narrative

rr_PerformanceTableNarrativeTextBlock

The following table shows the average annual total returns before taxes for each class of the Fund's shares.

Performance Information Illustrates Variability of Returns [Text]

rr_PerformanceInformationIllustratesVariabilityOfReturns

The bar chart and table below provide some indication of the risks of investing in the Fund by showing changes in the Fund's Non-Service Shares performance from calendar year to calendar year and by showing how the Fund's average annual returns for the periods of time shown in the table compare with those of a broad measure of market performance.

1 Year

rr_AverageAnnualReturnYear01

1.38%

10 Years

rr_AverageAnnualReturnYear10

7.31%

Prospectus:

rr_ProspectusTable

5 Years

rr_AverageAnnualReturnYear05

13.53%

Maximum Sales Charge (Load) imposed on purchases (as % of offering price)

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

none

Management Fees

rr_ManagementFeesOverAssets

0.69%

Other Expenses Over Assets

rr_OtherExpensesOverAssets

0.12%

Fee Waiver and/or Expense Reimbursement

rr_FeeWaiverOrReimbursementOverAssets

(0.01%)

^[1]

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

$ 82

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

450

Annual Return 2006

rr_AnnualReturn2006

7.95%

Annual Return 2008

rr_AnnualReturn2008

(45.52%)

Annual Return 2010

rr_AnnualReturn2010

9.42%

Annual Return 2012

rr_AnnualReturn2012

14.12%

Annual Return 2014

rr_AnnualReturn2014

15.41%

Highest Quarterly Return, Label

rr_HighestQuarterlyReturnLabel

highest return before taxes for a calendar quarter was 19.10% (2nd Qtr 09)

Highest Quarterly Return, Date

rr_BarChartHighestQuarterlyReturnDate

Jun. 30, 2009

Lowest Quarterly Return

rr_BarChartLowestQuarterlyReturn

(27.73%)

Inception Date

rr_AverageAnnualReturnInceptionDate

Apr. 03, 1985

5 Years

rr_AverageAnnualReturnYear05

11.83%

Maximum Sales Charge (Load) imposed on purchases (as % of offering price)

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

none

Management Fees

rr_ManagementFeesOverAssets

0.69%

Other Expenses Over Assets

rr_OtherExpensesOverAssets

0.12%

Fee Waiver and/or Expense Reimbursement

rr_FeeWaiverOrReimbursementOverAssets

(0.01%)

^[1]

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

$ 108

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

587

Inception Date

rr_AverageAnnualReturnInceptionDate

Sep. 18, 2001

5 Years

rr_AverageAnnualReturnYear05

11.55%

Objective, Primary [Text Block]

rr_ObjectivePrimaryTextBlock

Investment Objective. The Fund seeks total return.

Shareholder Fees Caption [Text]

rr_ShareholderFeesCaption

Shareholder Fees (fees paid directly from your investment)

Expense Example Narrative [Text Block]

rr_ExpenseExampleNarrativeTextBlock

Example. The following 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 a class of shares of the Fund for the time periods indicated. 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 expenses would be as follows, whether or not you redeemed your shares:

Portfolio Turnover, Rate

rr_PortfolioTurnoverRate

68.00%

Risk Narrative [Text Block]

rr_RiskNarrativeTextBlock

Principal Risks. The price of the Fund's shares can go up and down substantially. The value of the Fund's investments may change because of broad changes in the markets in which the Fund invests or because of poor investment selection, which could cause the Fund to underperform other funds with similar investment objectives. There is no assurance that the Fund will achieve its investment objective. When you redeem your shares, they may be worth less than what you paid for them. These risks mean that you can lose money by investing in the Fund.

Risks of Investing in Stocks. The value of the Fund's portfolio may be affected by changes in the stock markets. Stock markets may experience significant short-term volatility and may fall sharply at times. Adverse events in any part of the equity or fixed-income markets may have unexpected negative effects on other market segments. Different stock markets may behave differently from each other and U.S. stock markets may move in the opposite direction from one or more foreign stock markets.

The prices of individual stocks generally do not all move in the same direction at the same time. For example, "growth" stocks may perform well under circumstances in which "value" stocks in general have fallen. A variety of factors can affect the price of a particular company's stock. These factors may include, but are not limited to: poor earnings reports, a loss of customers, litigation against the company, general unfavorable performance of the company's sector or industry, or changes in government regulations affecting the company or its industry. To the extent that securities of a particular type are emphasized (for example foreign stocks, stocks of small- or mid-cap companies, growth or value stocks, or stocks of companies in a particular industry), fund share values may fluctuate more in response to events affecting the market for those types of securities.

Risks of Other Equity Securities. Most convertible securities are subject to the risks and price fluctuations of the underlying stock. They may be subject to the risk that the issuer will not be able to pay interest or dividends when due and their market value may change based on changes in the issuer's credit rating or the market's perception of the issuer's creditworthiness. Some convertible preferred stocks have a conversion or call feature that allows the issuer to redeem the stock before the conversion date, which could diminish the potential for capital appreciation on the investment. The fixed dividend rate of preferred stocks may cause their prices to behave more like those of debt securities. If interest rates rise, the value of preferred stock having a fixed dividend rate tends to fall. Preferred stock generally ranks behind debt securities in claims for dividends and assets of the issuer in a liquidation or bankruptcy. The price of a warrant does not necessarily move parallel to the price of the underlying security and is generally more volatile than that of the underlying security. Rights are similar to warrants, but normally have a shorter duration. The market for rights or warrants may be very limited and it may be difficult to sell them promptly at an acceptable price. Rights and warrants have no voting rights, receive no dividends and have no rights with respect to the assets of the issuer.

Risks of Investing in Debt Securities. Debt securities may be subject to interest rate risk, duration risk, credit risk, credit spread risk, extension risk, reinvestment risk, prepayment risk and event risk. Interest rate risk is the risk that when prevailing interest rates fall, the values of already-issued debt securities generally rise; and when prevailing interest rates rise, the values of already-issued debt securities generally fall, and they may be worth less than the amount the Fund paid for them. When interest rates change, the values of longer-term debt securities usually change more than the values of shorter-term debt securities. Risks associated with rising interest rates are heightened given that interest rates in the U.S. are at, or near, historic lows. Duration risk is the risk that longer-duration debt securities will be more volatile and more likely to decline in price in a rising interest rate environment than shorter-duration debt securities. Credit risk is the risk that the issuer of a security might not make interest and principal payments on the security as they become due. If an issuer fails to pay interest or repay principal, the Fund's income or share value might be reduced. Adverse news about an issuer or a downgrade in an issuer's credit rating, for any reason, can also reduce the market value of the issuer's securities. "Credit spread" is the difference in yield between securities that is due to differences in their credit quality. There is a risk that credit spreads may increase when the market expects lower-grade bonds to default more frequently. Widening credit spreads may quickly reduce the market values of the Fund's lower-rated and unrated securities. Some unrated securities may not have an active trading market or may trade less actively than rated securities, which means that the Fund might have difficulty selling them promptly at an acceptable price. Extension risk is the risk that an increase in interest rates could cause principal payments on a debt security to be repaid at a slower rate than expected. Extension risk is particularly prevalent for a callable security where an increase in interest rates could result in the issuer of that security choosing not to redeem the security as anticipated on the security's call date. Such a decision by the issuer could have the effect of lengthening the debt security's expected maturity, making it more vulnerable to interest rate risk and reducing its market value. Reinvestment risk is the risk that when interest rates fall the Fund may be required to reinvest the proceeds from a security's sale or redemption at a lower interest rate. Callable bonds are generally subject to greater reinvestment risk than non-callable bonds. Prepayment risk is the risk that the issuer may redeem the security prior to the expected maturity or that borrowers may repay the loans that underlie these securities more quickly than expected, thereby causing the issuer of the security to repay the principal prior to the expected maturity. The Fund may need to reinvest the proceeds at a lower interest rate, reducing its income. Event risk is the risk that an issuer could be subject to an event, such as a buyout or debt restructuring, that interferes with its ability to make timely interest and principal payments and cause the value of its debt securities to fall.

Fixed-Income Market Risks. The fixed-income securities market can be susceptible to increases in volatility and decreases in liquidity. Liquidity may decline unpredictably in response to overall economic conditions or credit tightening. During times of reduced market liquidity, the Fund may not be able to readily sell bonds at the prices at which they are carried on the Fund's books and could experience a loss. If the Fund needed to sell large blocks of bonds to meet shareholder redemption requests or to raise cash, those sales could further reduce the bonds' prices, particularly for lower-rated and unrated securities. An unexpected increase in redemptions by Fund shareholders, which may be triggered by general market turmoil or an increase in interest rates, could cause the Fund to sell its holdings at a loss or at undesirable prices.

Economic and other market developments can adversely affect fixed-income securities markets in the United States, Europe and elsewhere. At times, participants in debt securities markets may develop concerns about the ability of certain issuers of debt securities to make timely principal and interest payments, or they may develop concerns about the ability of financial institutions that make markets in certain debt securities to facilitate an orderly market. Those concerns may impact the market price or value of those debt securities and may cause increased volatility in those debt securities or debt securities markets. Under some circumstances, as was the case during the latter half of 2008 and early 2009, those concerns may cause reduced liquidity in certain debt securities markets, reducing the willingness of some lenders to extend credit, and making it more difficult for borrowers to obtain financing on attractive terms (or at all). A lack of liquidity or other adverse credit market conditions may hamper the Fund's ability to sell the debt securities in which it invests or to find and purchase suitable debt instruments.

Risks of Below-Investment-Grade Securities. Below-investment-grade debt securities (also referred to as "junk" bonds), whether rated or unrated, may be subject to greater price fluctuations than investment-grade securities, increased credit risk and a greater risk that the issuer might not be able to pay interest and principal when due, especially during times of weakening economic conditions or rising interest rates. The market for below-investment-grade securities may be less liquid and therefore these securities may be harder to value or sell at an acceptable price, especially during times of market volatility or decline.

Because the Fund can invest up to 25% of its assets in below-investment-grade securities, the Fund's credit risks are greater than those of funds that buy only investment-grade securities. This restriction is applied at the time of purchase and the Fund may continue to hold a security whose credit rating has been downgraded or, in the case of an unrated security, after the Fund's Sub-Adviser has changed its assessment of the security's credit quality. As a result, credit rating downgrades or other market fluctuations may cause the Fund's holdings of below-investment-grade securities to exceed, at times significantly, this restriction for an extended period of time. Credit rating downgrades of a single issuer or related similar issuers whose securities the Fund holds in significant amounts could substantially and unexpectedly increase the Fund's exposure to below-investment-grade securities and the risks associated with them, especially liquidity and default risk. If the Fund has more than 25% of its total assets invested in below-investment-grade securities, the Sub-Adviser will not purchase additional below-investment-grade securities until the level of holdings in those securities no longer exceeds the restriction.

Risks of Mortgage-Related Securities. The Fund can buy interests in pools of residential or commercial mortgages in the form of "pass-through" mortgage securities. They may be issued or guaranteed by the U.S. government, or its agencies and instrumentalities, or by private issuers. Mortgage-related securities issued by private issuers are not U.S. government securities, and are subject to greater credit risks than mortgage-related securities that are U.S. government securities. Private-issuer mortgage-backed securities are also subject to interest rate risk, and the market for private-issuer mortgage-backed securities may be volatile at times and may be less liquid than the markets for other types of securities. In addition, a substantial portion of the Fund's assets may be subject to "forward roll" transactions (also referred to as "mortgage dollar rolls") at any given time, which subject the Fund to the risk that market value of the mortgage-related securities involved might decline, and that the counterparty might default in its obligations.

Asset-Backed Securities Risk. The Fund can buy asset-backed securities, which are fractional interests in pools of loans and are collateralized by the loans, other assets or receivables. They are typically issued by trusts and special purpose corporations that pass the income from the underlying pool to the purchasers. These securities are subject to the risk of default by the issuer as well as by the borrowers of the underlying loans in the pool, and to interest rate and prepayment risks.

Risks of Foreign Investing. Foreign securities are subject to special risks. Securities traded in foreign markets may be less liquid and more volatile than those traded in U.S. markets. Foreign issuers are usually not subject to the same accounting and disclosure requirements that U.S. companies are subject to, which may make it difficult for the Fund to evaluate a foreign company's operations or financial condition. A change in the value of a foreign currency against the U.S. dollar will result in a change in the U.S. dollar value of investments denominated in that foreign currency and in the value of any income or distributions the Fund may receive on those investments. The value of foreign investments may be affected by exchange control regulations, foreign taxes, higher transaction and other costs, delays in the settlement of transactions, changes in economic or monetary policy in the United States or abroad, expropriation or nationalization of a company's assets, or other political and economic factors. In addition, due to the inter-relationship of global economies and financial markets, changes in political and economic factors in one country or region could adversely affect conditions in another country or region. Investments in foreign securities may also expose the Fund to time-zone arbitrage risk. Foreign securities may trade on weekends or other days when the Fund does not price its shares. As a result, the value of the Fund's net assets may change on days when you will not be able to purchase or redeem the Fund's shares. At times, the Fund may emphasize investments in a particular country or region and may be subject to greater risks from adverse events that occur in that country or region. Foreign securities and foreign currencies held in foreign banks and securities depositories may be subject to only limited or no regulatory oversight.

Risks of Developing and Emerging Markets. Investments in developing and emerging markets are subject to all the risks associated with foreign investing, however, these risks may be magnified in developing and emerging markets. Developing or emerging market countries may have less well-developed securities markets and exchanges that may be substantially less liquid than those of more developed markets. Settlement procedures in developing or emerging markets may differ from those of more established securities markets, and settlement delays may result in the inability to invest assets or to dispose of portfolio securities in a timely manner. Securities prices in developing or emerging markets may be significantly more volatile than is the case in more developed nations of the world, and governments of developing or emerging market countries may also be more unstable than the governments of more developed countries. Such countries' economies may be more dependent on relatively few industries or investors that may be highly vulnerable to local and global changes. Developing or emerging market countries also may be subject to social, political or economic instability. The value of developing or emerging market countries' currencies may fluctuate more than the currencies of countries with more mature markets. Investments in developing or emerging market countries may be subject to greater risks of government restrictions, including confiscatory taxation, expropriation or nationalization of a company's assets, restrictions on foreign ownership of local companies, restrictions on withdrawing assets from the country, protectionist measures, and practices such as share blocking. In addition, the ability of foreign entities to participate in privatization programs of certain developing or emerging market countries may be limited by local law. Investments in securities of issuers in developing or emerging market countries may be considered speculative.

Risks of Small- and Mid-Cap Companies. Small- and mid-cap companies may be either established or newer companies, including "unseasoned" companies that have typically been in operation for less than three years. While small- and mid-cap companies might offer greater opportunities for gain than larger companies, they also involve greater risk of loss. They may be more sensitive to changes in a company's earnings expectations and may experience more abrupt and erratic price movements. Small- and mid-cap companies' securities may trade in lower volumes and it might be harder for the Fund to dispose of its holdings at an acceptable price when it wants to sell them. Small- and mid-cap companies may not have established markets for their products or services and may have fewer customers and product lines. They may have more limited access to financial resources and may not have the financial strength to sustain them through business downturns or adverse market conditions. Since small- and mid-cap companies typically reinvest a high proportion of their earnings in their business, they may not pay dividends for some time, particularly if they are newer companies. Small- and mid-cap companies may have unseasoned management or less depth in management skill than larger, more established companies. They may be more reliant on the efforts of particular members of their management team and management changes may pose a greater risk to the success of the business. It may take a substantial period of time before the Fund realizes a gain on an investment in a small- or mid-cap company, if it realizes any gain at all.

Risks of Derivative Investments. Derivatives may involve significant risks. Derivatives may be more volatile than other types of investments, may require the payment of premiums, may increase portfolio turnover, may be illiquid, and may not perform as expected. Derivatives are subject to counterparty risk and the Fund may lose money on a derivative investment if the issuer or counterparty fails to pay the amount due. Some derivatives have the potential for unlimited loss, regardless of the size of the Fund's initial investment. As a result of these risks, the Fund could realize little or no income or lose money from its investment, or a hedge might be unsuccessful. In addition, under new rules enacted and currently being implemented under financial reform legislation, certain over-the-counter derivatives are (or soon will be) required to be executed on a regulated market and/or cleared through a clearinghouse. It is unclear how these regulatory changes will affect counterparty risk, and entering into a derivative transaction with a clearinghouse may entail further risks and costs.

Who Is the Fund Designed For? The Fund's shares are available only as an investment option under certain variable annuity contracts, variable life insurance policies and investment plans offered through insurance company separate accounts of participating insurance companies. The Fund is designed primarily for investors seeking total return. Those investors should be willing to assume the risks of short-term share price fluctuations that are typical for a fund that has substantial investments in equity securities. Although the Fund seeks total return, it is not designed for investors needing an assured level of current income. The Fund is not a complete investment program. You should carefully consider your own investment goals and risk tolerance before investing in the Fund.

An investment in the Fund is not a deposit of any bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.

Risk Not Insured Depository Institution [Text]

rr_RiskNotInsuredDepositoryInstitution

An investment in the Fund is not a deposit of any bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.

Bar Chart Does Not Reflect Sales Loads [Text]

rr_BarChartDoesNotReflectSalesLoads

Charges imposed by the insurance accounts that invest in the Fund are not included and the returns would be lower if they were.

Performance Table Heading

rr_PerformanceTableHeading

Average Annual Total Returns for the periods ended December 31, 2015

Performance Past Does Not Indicate Future [Text]

rr_PerformancePastDoesNotIndicateFuture

The Fund's past investment performance is not necessarily an indication of how the Fund will perform in the future.

Performance Availability Website Address [Text]

rr_PerformanceAvailabilityWebSiteAddress

https://www.oppenheimerfunds.com/fund/ConservativeBalancedFundVA

Prospectus:

rr_ProspectusTable

5 Years

rr_AverageAnnualReturnYear05

12.18%

1 Year

rr_AverageAnnualReturnYear01

0.55%

10 Years

rr_AverageAnnualReturnYear10

4.51%

Prospectus:

rr_ProspectusTable

5 Years

rr_AverageAnnualReturnYear05

6.66%

Maximum Sales Charge (Load) imposed on purchases (as % of offering price)

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

none

Management Fees

rr_ManagementFeesOverAssets

0.74%

Other Expenses Over Assets

rr_OtherExpensesOverAssets

0.17%

Fee Waiver and/or Expense Reimbursement

rr_FeeWaiverOrReimbursementOverAssets

(0.24%)

^[2]

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

$ 69

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

482

Annual Return 2006

rr_AnnualReturn2006

11.15%

Annual Return 2008

rr_AnnualReturn2008

(43.47%)

Annual Return 2010

rr_AnnualReturn2010

12.91%

Annual Return 2012

rr_AnnualReturn2012

12.34%

Annual Return 2014

rr_AnnualReturn2014

8.20%

Highest Quarterly Return, Label

rr_HighestQuarterlyReturnLabel

highest return before taxes for a calendar quarter was 14.27% (2nd Qtr 09)

Highest Quarterly Return, Date

rr_BarChartHighestQuarterlyReturnDate

Jun. 30, 2009

Lowest Quarterly Return

rr_BarChartLowestQuarterlyReturn

(30.11%)

Inception Date

rr_AverageAnnualReturnInceptionDate

Feb. 09, 1987

5 Years

rr_AverageAnnualReturnYear05

6.91%

Maximum Sales Charge (Load) imposed on purchases (as % of offering price)

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

none

Management Fees

rr_ManagementFeesOverAssets

0.74%

Other Expenses Over Assets

rr_OtherExpensesOverAssets

0.17%

Fee Waiver and/or Expense Reimbursement

rr_FeeWaiverOrReimbursementOverAssets

(0.24%)

^[2]

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

$ 94

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

619

Inception Date

rr_AverageAnnualReturnInceptionDate

May 01, 2002

5 Years

rr_AverageAnnualReturnYear05

6.64%

Objective, Primary [Text Block]

rr_ObjectivePrimaryTextBlock

Investment Objective. The Fund seeks total return.

Shareholder Fees Caption [Text]

rr_ShareholderFeesCaption

Shareholder Fees (fees paid directly from your investment)

Expense Example Narrative [Text Block]

rr_ExpenseExampleNarrativeTextBlock

Example. The following 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 a class of shares of the Fund for the time periods indicated. 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 expenses would be as follows, whether or not you redeemed your shares:

Portfolio Turnover, Rate

rr_PortfolioTurnoverRate

73.00%

Risk Narrative [Text Block]

rr_RiskNarrativeTextBlock

Principal Risks. The price of the Fund's shares can go up and down substantially. The value of the Fund's investments may change because of broad changes in the markets in which the Fund invests or because of poor investment selection, which could cause the Fund to underperform other funds with similar investment objectives. There is no assurance that the Fund will achieve its investment objective. When you redeem your shares, they may be worth less than what you paid for them. These risks mean that you can lose money by investing in the Fund.

Risks of Investing in Debt Securities. Debt securities may be subject to interest rate risk, duration risk, credit risk, credit spread risk, extension risk, reinvestment risk, prepayment risk and event risk. Interest rate risk is the risk that when prevailing interest rates fall, the values of already-issued debt securities generally rise; and when prevailing interest rates rise, the values of already-issued debt securities generally fall, and they may be worth less than the amount the Fund paid for them. When interest rates change, the values of longer-term debt securities usually change more than the values of shorter-term debt securities. Risks associated with rising interest rates are heightened given that interest rates in the U.S. are at, or near, historic lows. Duration risk is the risk that longer-duration debt securities will be more volatile and more likely to decline in price in a rising interest rate environment than shorter-duration debt securities. Credit risk is the risk that the issuer of a security might not make interest and principal payments on the security as they become due. If an issuer fails to pay interest or repay principal, the Fund's income or share value might be reduced. Adverse news about an issuer or a downgrade in an issuer's credit rating, for any reason, can also reduce the market value of the issuer's securities. "Credit spread" is the difference in yield between securities that is due to differences in their credit quality. There is a risk that credit spreads may increase when the market expects lower-grade bonds to default more frequently. Widening credit spreads may quickly reduce the market values of the Fund's lower-rated and unrated securities. Some unrated securities may not have an active trading market or may trade less actively than rated securities, which means that the Fund might have difficulty selling them promptly at an acceptable price. Extension risk is the risk that an increase in interest rates could cause principal payments on a debt security to be repaid at a slower rate than expected. Extension risk is particularly prevalent for a callable security where an increase in interest rates could result in the issuer of that security choosing not to redeem the security as anticipated on the security's call date. Such a decision by the issuer could have the effect of lengthening the debt security's expected maturity, making it more vulnerable to interest rate risk and reducing its market value. Reinvestment risk is the risk that when interest rates fall the Fund may be required to reinvest the proceeds from a security's sale or redemption at a lower interest rate. Callable bonds are generally subject to greater reinvestment risk than non-callable bonds. Prepayment risk is the risk that the issuer may redeem the security prior to the expected maturity or that borrowers may repay the loans that underlie these securities more quickly than expected, thereby causing the issuer of the security to repay the principal prior to the expected maturity. The Fund may need to reinvest the proceeds at a lower interest rate, reducing its income. Event risk is the risk that an issuer could be subject to an event, such as a buyout or debt restructuring, that interferes with its ability to make timely interest and principal payments and cause the value of its debt securities to fall.

Fixed-Income Market Risks. The fixed-income securities market can be susceptible to increases in volatility and decreases in liquidity. Liquidity may decline unpredictably in response to overall economic conditions or credit tightening. During times of reduced market liquidity, the Fund may not be able to readily sell bonds at the prices at which they are carried on the Fund's books and could experience a loss. If the Fund needed to sell large blocks of bonds to meet shareholder redemption requests or to raise cash, those sales could further reduce the bonds' prices, particularly for lower-rated and unrated securities. An unexpected increase in redemptions by Fund shareholders, which may be triggered by general market turmoil or an increase in interest rates, could cause the Fund to sell its holdings at a loss or at undesirable prices.

Economic and other market developments can adversely affect fixed-income securities markets in the United States, Europe and elsewhere. At times, participants in debt securities markets may develop concerns about the ability of certain issuers of debt securities to make timely principal and interest payments, or they may develop concerns about the ability of financial institutions that make markets in certain debt securities to facilitate an orderly market. Those concerns may impact the market price or value of those debt securities and may cause increased volatility in those debt securities or debt securities markets. Under some circumstances, as was the case during the latter half of 2008 and early 2009, those concerns may cause reduced liquidity in certain debt securities markets, reducing the willingness of some lenders to extend credit, and making it more difficult for borrowers to obtain financing on attractive terms (or at all). A lack of liquidity or other adverse credit market conditions may hamper the Fund's ability to sell the debt securities in which it invests or to find and purchase suitable debt instruments.

Risks of Below-Investment-Grade Securities. Below-investment-grade debt securities (also referred to as "junk" bonds), whether rated or unrated, may be subject to greater price fluctuations than investment-grade securities, increased credit risk and a greater risk that the issuer might not be able to pay interest and principal when due, especially during times of weakening economic conditions or rising interest rates. The market for below-investment-grade securities may be less liquid and therefore these securities may be harder to value or sell at an acceptable price, especially during times of market volatility or decline.

Because the Fund can invest up to 20% of its total assets in lower-grade securities, the Fund's credit risks are greater than those funds that buy only investment grade securities. This restriction is applied at the time of purchase and the Fund may continue to hold a security whose credit rating has been downgraded or, in the case of an unrated security, after the Fund's Sub-Adviser has changed its assessment of the security's credit quality. As a result, credit rating downgrades or other market fluctuations may cause the Fund's holdings of below-investment-grade securities to exceed, at times significantly, this restriction for an extended period of time. Credit rating downgrades of a single issuer or related similar issuers whose securities the Fund holds in significant amounts could substantially and unexpectedly increase the Fund's exposure to below-investment-grade securities and the risks associated with them, especially liquidity and default risk. If the Fund has more than 20% of its total assets invested in below-investment-grade securities, the Sub-Adviser will not purchase additional below-investment-grade securities until the level of holdings in those securities no longer exceeds the restriction.

Risks of Foreign Investing. Foreign securities are subject to special risks. Securities traded in foreign markets may be less liquid and more volatile than those traded in U.S. markets. Foreign issuers are usually not subject to the same accounting and disclosure requirements that U.S. companies are subject to, which may make it difficult for the Fund to evaluate a foreign company's operations or financial condition. A change in the value of a foreign currency against the U.S. dollar will result in a change in the U.S. dollar value of investments denominated in that foreign currency and in the value of any income or distributions the Fund may receive on those investments. The value of foreign investments may be affected by exchange control regulations, foreign taxes, higher transaction and other costs, delays in the settlement of transactions, changes in economic or monetary policy in the United States or abroad, expropriation or nationalization of a company's assets, or other political and economic factors. In addition, due to the inter-relationship of global economies and financial markets, changes in political and economic factors in one country or region could adversely affect conditions in another country or region. Investments in foreign securities may also expose the Fund to time-zone arbitrage risk. Foreign securities may trade on weekends or other days when the Fund does not price its shares. As a result, the value of the Fund's net assets may change on days when you will not be able to purchase or redeem the Fund's shares. At times, the Fund may emphasize investments in a particular country or region and may be subject to greater risks from adverse events that occur in that country or region. Foreign securities and foreign currencies held in foreign banks and securities depositories may be subject to only limited or no regulatory oversight.

Risks of Developing and Emerging Markets. Investments in developing and emerging markets are subject to all the risks associated with foreign investing, however, these risks may be magnified in developing and emerging markets. Developing or emerging market countries may have less well-developed securities markets and exchanges that may be substantially less liquid than those of more developed markets. Settlement procedures in developing or emerging markets may differ from those of more established securities markets, and settlement delays may result in the inability to invest assets or to dispose of portfolio securities in a timely manner. Securities prices in developing or emerging markets may be significantly more volatile than is the case in more developed nations of the world, and governments of developing or emerging market countries may also be more unstable than the governments of more developed countries. Such countries' economies may be more dependent on relatively few industries or investors that may be highly vulnerable to local and global changes. Developing or emerging market countries also may be subject to social, political or economic instability. The value of developing or emerging market countries' currencies may fluctuate more than the currencies of countries with more mature markets. Investments in developing or emerging market countries may be subject to greater risks of government restrictions, including confiscatory taxation, expropriation or nationalization of a company's assets, restrictions on foreign ownership of local companies, restrictions on withdrawing assets from the country, protectionist measures, and practices such as share blocking. In addition, the ability of foreign entities to participate in privatization programs of certain developing or emerging market countries may be limited by local law. Investments in securities of issuers in developing or emerging market countries may be considered speculative.

Risks of Derivative Investments. Derivatives may involve significant risks. Derivatives may be more volatile than other types of investments, may require the payment of premiums, may increase portfolio turnover, may be illiquid, and may not perform as expected. Derivatives are subject to counterparty risk and the Fund may lose money on a derivative investment if the issuer or counterparty fails to pay the amount due. Some derivatives have the potential for unlimited loss, regardless of the size of the Fund's initial investment. As a result of these risks, the Fund could realize little or no income or lose money from its investment, or a hedge might be unsuccessful. In addition, under new rules enacted and currently being implemented under financial reform legislation, certain over-the-counter derivatives are (or soon will be) required to be executed on a regulated market and/or cleared through a clearinghouse. It is unclear how these regulatory changes will affect counterparty risk, and entering into a derivative transaction with a clearinghouse may entail further risks and costs.

Who Is the Fund Designed For? The Fund's shares are available only as an investment option under certain variable annuity contracts, variable life insurance policies and other investment plans offered through insurance company separate accounts of participating insurance companies. The Fund is designed primarily for investors seeking total return from a fund that invests mainly in investment-grade debt securities but which can also hold high-yield, below investment-grade securities. Those investors should be willing to assume the risks of a fund that typically invests a significant amount of its assets in corporate-debt securities and the changes in debt securities prices that can occur when interest rates change. The Fund is intended to be a long-term investment, not a short-term trading vehicle. Because the Fund's income will fluctuate, it is not designed for investors needing an assured level of current income. The Fund is not a complete investment program and may not be appropriate for all investors. You should carefully consider your own investment goals and risk tolerance before investing in the Fund.

An investment in the Fund is not a deposit of any bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.

Risk Not Insured Depository Institution [Text]

rr_RiskNotInsuredDepositoryInstitution

An investment in the Fund is not a deposit of any bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.

Bar Chart Does Not Reflect Sales Loads [Text]

rr_BarChartDoesNotReflectSalesLoads

Charges imposed by the insurance accounts that invest in the Fund are not included and the returns would be lower if they were.

Performance Table Heading

rr_PerformanceTableHeading

Average Annual Total Returns for the periods ended December 31, 2015

Performance Past Does Not Indicate Future [Text]

rr_PerformancePastDoesNotIndicateFuture

The Fund's past investment performance is not necessarily an indication of how the Fund will perform in the future.

Performance Availability Website Address [Text]

rr_PerformanceAvailabilityWebSiteAddress

https://www.oppenheimerfunds.com/fund/CoreBondFundVA

Prospectus:

rr_ProspectusTable

5 Years

rr_AverageAnnualReturnYear05

4.38%

1 Year

rr_AverageAnnualReturnYear01

0.55%

10 Years

rr_AverageAnnualReturnYear10

4.51%

Prospectus:

rr_ProspectusTable

5 Years

rr_AverageAnnualReturnYear05

3.23%

Maximum Sales Charge (Load) imposed on purchases (as % of offering price)

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

none

Management Fees

rr_ManagementFeesOverAssets

0.60%

Acquired Fund Fees and Expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.01%

Total Annual Fund Operating Expenses

rr_ExpensesOverAssets

0.83%

Total Annual Fund Operating Expenses After Fee Waiver and/or Expense Reimbursement

rr_NetExpensesOverAssets

0.76%

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

259

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

$ 1,023

Annual Return 2007

rr_AnnualReturn2007

4.39%

Annual Return 2009

rr_AnnualReturn2009

9.61%

Annual Return 2011

rr_AnnualReturn2011

8.27%

Annual Return 2013

rr_AnnualReturn2013

(0.10%)

Annual Return 2015

rr_AnnualReturn2015

0.96%

Highest Quarterly Return

rr_BarChartHighestQuarterlyReturn

8.52%

Lowest Quarterly Return, Label

rr_LowestQuarterlyReturnLabel

lowest return before taxes for a calendar quarter was -29.59% (4th Qtr 08)

Lowest Quarterly Return, Date

rr_BarChartLowestQuarterlyReturnDate

Dec. 31, 2008

1 Year

rr_AverageAnnualReturnYear01

0.96%

10 Years

rr_AverageAnnualReturnYear10

0.55%

Prospectus:

rr_ProspectusTable

Maximum Deferred Sales Charge (Load) (as % of the lower of original offering price or redemption proceeds)

rr_MaximumDeferredSalesChargeOverOther

none

Distribution and/or Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

0.25%

Other Expenses Over Assets

rr_OtherExpensesOverAssets

0.22%

Fee Waiver and/or Expense Reimbursement

rr_FeeWaiverOrReimbursementOverAssets

(0.07%)

^[3]

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

$ 104

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

592

Inception Date

rr_AverageAnnualReturnInceptionDate

May 01, 2002

5 Years

rr_AverageAnnualReturnYear05

4.99%

Objective, Primary [Text Block]

rr_ObjectivePrimaryTextBlock

Investment Objective. The Fund seeks capital appreciation.

Shareholder Fees Caption [Text]

rr_ShareholderFeesCaption

Shareholder Fees (fees paid directly from your investment)

Expense Example Narrative [Text Block]

rr_ExpenseExampleNarrativeTextBlock

Example. The following 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 a class of shares of the Fund for the time periods indicated. 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 expenses would be as follows, whether or not you redeemed your shares:

Portfolio Turnover, Rate

rr_PortfolioTurnoverRate

81.00%

Risk Narrative [Text Block]

rr_RiskNarrativeTextBlock

Principal Risks. The price of the Fund's shares can go up and down substantially. The value of the Fund's investments may change because of broad changes in the markets in which the Fund invests or because of poor investment selection, which could cause the Fund to underperform other funds with similar investment objectives. There is no assurance that the Fund will achieve its investment objective. When you redeem your shares, they may be worth less than what you paid for them. These risks mean that you can lose money by investing in the Fund.

Risks of Investing in Stocks. The value of the Fund's portfolio may be affected by changes in the stock markets. Stock markets may experience significant short-term volatility and may fall sharply at times. Adverse events in any part of the equity or fixed-income markets may have unexpected negative effects on other market segments. Different stock markets may behave differently from each other and U.S. stock markets may move in the opposite direction from one or more foreign stock markets.

The prices of individual stocks generally do not all move in the same direction at the same time. For example, "growth" stocks may perform well under circumstances in which "value" stocks in general have fallen. A variety of factors can affect the price of a particular company's stock. These factors may include, but are not limited to: poor earnings reports, a loss of customers, litigation against the company, general unfavorable performance of the company's sector or industry, or changes in government regulations affecting the company or its industry. To the extent that securities of a particular type are emphasized (for example foreign stocks, stocks of small- or mid-cap companies, growth or value stocks, or stocks of companies in a particular industry), fund share values may fluctuate more in response to events affecting the market for those types of securities.

Industry and Sector Focus. At times the Fund may increase the relative emphasis of its investments in a particular industry or sector. The prices of stocks of issuers in a particular industry or sector may go up and down in response to changes in economic conditions, government regulations, availability of basic resources or supplies, or other events that affect that industry or sector more than others. To the extent that the Fund increases the relative emphasis of its investments in a particular industry or sector, its share values may fluctuate in response to events affecting that industry or sector. To some extent that risk may be limited by the Fund's policy of not concentrating its investments in any one industry.

Risks of Mid-Cap Companies. Mid-cap companies generally involve greater risk of loss than larger companies. The prices of securities issued by mid-sized companies may be more volatile and their securities may be less liquid and more difficult to sell than those of larger companies. They may have less established markets, fewer customers and product lines, less management depth and more limited access to financial resources. Mid-cap companies may not pay dividends for some time, if at all.

Risks of Growth Investing. If a growth company's earnings or stock price fails to increase as anticipated, or if its business plans do not produce the expected results, its securities may decline sharply. Growth companies may be newer or smaller companies that may experience greater stock price fluctuations and risks of loss than larger, more established companies. Newer growth companies tend to retain a large part of their earnings for research, development or investments in capital assets. Therefore, they may not pay any dividends for some time. Growth investing has gone in and out of favor during past market cycles and is likely to continue to do so. During periods when growth investing is out of favor or when markets are unstable, it may be more difficult to sell growth company securities at an acceptable price. Growth stocks may also be more volatile than other securities because of investor speculation.

Risks of Foreign Investing. Foreign securities are subject to special risks. Securities traded in foreign markets may be less liquid and more volatile than those traded in U.S. markets. Foreign issuers are usually not subject to the same accounting and disclosure requirements that U.S. companies are subject to, which may make it difficult for the Fund to evaluate a foreign company's operations or financial condition. A change in the value of a foreign currency against the U.S. dollar will result in a change in the U.S. dollar value of investments denominated in that foreign currency and in the value of any income or distributions the Fund may receive on those investments. The value of foreign investments may be affected by exchange control regulations, foreign taxes, higher transaction and other costs, delays in the settlement of transactions, changes in economic or monetary policy in the United States or abroad, expropriation or nationalization of a company's assets, or other political and economic factors. In addition, due to the inter-relationship of global economies and financial markets, changes in political and economic factors in one country or region could adversely affect conditions in another country or region. Investments in foreign securities may also expose the Fund to time-zone arbitrage risk. Foreign securities may trade on weekends or other days when the Fund does not price its shares. As a result, the value of the Fund's net assets may change on days when you will not be able to purchase or redeem the Fund's shares. At times, the Fund may emphasize investments in a particular country or region and may be subject to greater risks from adverse events that occur in that country or region. Foreign securities and foreign currencies held in foreign banks and securities depositories may be subject to only limited or no regulatory oversight.

Cyclical Opportunities. At times, the Fund might seek to take advantage of short-term market movements or changes in the business cycle by investing in companies or industries that are sensitive to those changes. For example, when the economy is expanding, companies in consumer durables and the technology sector might benefit. There is a risk that, if a cyclical event does not have the anticipated effect or when the issuer or industry is out of phase in the business cycle, the value of the Fund's investment could fall.

Who Is The Fund Designed For? The Fund's shares are available only as an investment option under certain variable annuity contracts, variable life insurance policies and investment plans offered through insurance company separate accounts of participating insurance companies. The Fund is designed primarily for investors seeking capital appreciation over the long term. Those investors should be willing to assume the risks of short-term share price fluctuations and losses that are typical for an aggressive growth fund emphasizing mid-cap stock investments. The Fund does not seek current income and is not designed for investors needing current income. The Fund is not a complete investment program and may not be appropriate for all investors. You should carefully consider your own investment goals and risk tolerance before investing in the Fund.

An investment in the Fund is not a deposit of any bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.

Risk Not Insured Depository Institution [Text]

rr_RiskNotInsuredDepositoryInstitution

An investment in the Fund is not a deposit of any bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.

Bar Chart Does Not Reflect Sales Loads [Text]

rr_BarChartDoesNotReflectSalesLoads

Charges imposed by the insurance accounts that invest in the Fund are not included and the returns would be lower if they were.

Performance Table Heading

rr_PerformanceTableHeading

Average Annual Total Returns for the periods ended December 31, 2015

Performance Past Does Not Indicate Future [Text]

rr_PerformancePastDoesNotIndicateFuture

The Fund's past investment performance is not necessarily an indication of how the Fund will perform in the future.

Performance Availability Website Address [Text]

rr_PerformanceAvailabilityWebSiteAddress

https://www.oppenheimerfunds.com/fund/DiscoveryMidCapGrowthFundVA

Prospectus:

rr_ProspectusTable

5 Years

rr_AverageAnnualReturnYear05

11.54%

Maximum Sales Charge (Load) imposed on purchases (as % of offering price)

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

none

Management Fees

rr_ManagementFeesOverAssets

0.71%

Other Expenses Over Assets

rr_OtherExpensesOverAssets

0.12%

Fee Waiver and/or Expense Reimbursement

rr_FeeWaiverOrReimbursementOverAssets

(0.03%)

^[4]

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

$ 82

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

459

Annual Return 2006

rr_AnnualReturn2006

2.96%

Annual Return 2008

rr_AnnualReturn2008

(49.07%)

Annual Return 2010

rr_AnnualReturn2010

27.46%

Annual Return 2012

rr_AnnualReturn2012

16.45%

Annual Return 2014

rr_AnnualReturn2014

5.78%

Highest Quarterly Return, Label

rr_HighestQuarterlyReturnLabel

highest return before taxes for a calendar quarter was 16.47% (1st Qtr 12)

Highest Quarterly Return, Date

rr_BarChartHighestQuarterlyReturnDate

Mar. 31, 2012

Lowest Quarterly Return

rr_BarChartLowestQuarterlyReturn

(32.43%)

Inception Date

rr_AverageAnnualReturnInceptionDate

Aug. 15, 1986

5 Years

rr_AverageAnnualReturnYear05

12.54%

Maximum Sales Charge (Load) imposed on purchases (as % of offering price)

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

none

Management Fees

rr_ManagementFeesOverAssets

0.71%

Other Expenses Over Assets

rr_OtherExpensesOverAssets

0.12%

Fee Waiver and/or Expense Reimbursement

rr_FeeWaiverOrReimbursementOverAssets

(0.03%)

^[4]

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

$ 108

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

596

Inception Date

rr_AverageAnnualReturnInceptionDate

Oct. 18, 2000

5 Years

rr_AverageAnnualReturnYear05

12.26%

Objective, Primary [Text Block]

rr_ObjectivePrimaryTextBlock

Investment Objective. The Fund seeks total return.

Shareholder Fees Caption [Text]

rr_ShareholderFeesCaption

Shareholder Fees (fees paid directly from your investment)

Expense Example Narrative [Text Block]

rr_ExpenseExampleNarrativeTextBlock

Example. The following 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 a class of shares of the Fund for the time periods indicated. 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 expenses would be as follows, whether or not you redeemed your shares:

Portfolio Turnover, Rate

rr_PortfolioTurnoverRate

44.00%

Risk Narrative [Text Block]

rr_RiskNarrativeTextBlock

Principal Risks. The price of the Fund's shares can go up and down substantially. The value of the Fund's investments may change because of broad changes in the markets in which the Fund invests or because of poor investment selection, which could cause the Fund to underperform other funds with similar investment objectives. There is no assurance that the Fund will achieve its investment objective. When you redeem your shares, they may be worth less than what you paid for them. These risks mean that you can lose money by investing in the Fund.

Risks of Investing in Stocks. The value of the Fund's portfolio may be affected by changes in the stock markets. Stock markets may experience significant short-term volatility and may fall sharply at times. Adverse events in any part of the equity or fixed-income markets may have unexpected negative effects on other market segments. Different stock markets may behave differently from each other and U.S. stock markets may move in the opposite direction from one or more foreign stock markets.

The prices of individual stocks generally do not all move in the same direction at the same time. For example, "growth" stocks may perform well under circumstances in which "value" stocks in general have fallen. A variety of factors can affect the price of a particular company's stock. These factors may include, but are not limited to: poor earnings reports, a loss of customers, litigation against the company, general unfavorable performance of the company's sector or industry, or changes in government regulations affecting the company or its industry. To the extent that securities of a particular type are emphasized (for example foreign stocks, stocks of small- or mid-cap companies, growth or value stocks, or stocks of companies in a particular industry), fund share values may fluctuate more in response to events affecting the market for those types of securities.

Industry and Sector Focus. At times the Fund may increase the relative emphasis of its investments in a particular industry or sector. The prices of stocks of issuers in a particular industry or sector may go up and down in response to changes in economic conditions, government regulations, availability of basic resources or supplies, or other events that affect that industry or sector more than others. To the extent that the Fund increases the relative emphasis of its investments in a particular industry or sector, its share values may fluctuate in response to events affecting that industry or sector. To some extent that risk may be limited by the Fund's policy of not concentrating its investments in any one industry.

Risks of Other Equity Securities. Most convertible securities are subject to the risks and price fluctuations of the underlying stock. They may be subject to the risk that the issuer will not be able to pay interest or dividends when due and their market value may change based on changes in the issuer's credit rating or the market's perception of the issuer's creditworthiness. Some convertible preferred stocks have a conversion or call feature that allows the issuer to redeem the stock before the conversion date, which could diminish the potential for capital appreciation on the investment. The fixed dividend rate of preferred stocks may cause their prices to behave more like those of debt securities. If interest rates rise, the value of preferred stock having a fixed dividend rate tends to fall. Preferred stock generally ranks behind debt securities in claims for dividends and assets of the issuer in a liquidation or bankruptcy. The price of a warrant does not necessarily move parallel to the price of the underlying security and is generally more volatile than that of the underlying security. Rights are similar to warrants, but normally have a shorter duration. The market for rights or warrants may be very limited and it may be difficult to sell them promptly at an acceptable price. Rights and warrants have no voting rights, receive no dividends and have no rights with respect to the assets of the issuer.

Risks of Small- and Mid-Cap Companies. Small- and mid-cap companies may be either established or newer companies, including "unseasoned" companies that have typically been in operation for less than three years. While small- and mid-cap companies might offer greater opportunities for gain than larger companies, they also involve greater risk of loss. They may be more sensitive to changes in a company's earnings expectations and may experience more abrupt and erratic price movements. Small- and mid-cap companies' securities may trade in lower volumes and it might be harder for the Fund to dispose of its holdings at an acceptable price when it wants to sell them. Small- and mid-cap companies may not have established markets for their products or services and may have fewer customers and product lines. They may have more limited access to financial resources and may not have the financial strength to sustain them through business downturns or adverse market conditions. Since small- and mid-cap companies typically reinvest a high proportion of their earnings in their business, they may not pay dividends for some time, particularly if they are newer companies. Small- and mid-cap companies may have unseasoned management or less depth in management skill than larger, more established companies. They may be more reliant on the efforts of particular members of their management team and management changes may pose a greater risk to the success of the business. It may take a substantial period of time before the Fund realizes a gain on an investment in a small- or mid-cap company, if it realizes any gain at all.

Risks of Value Investing. Value investing entails the risk that if the market does not recognize that a fund's securities are undervalued, the prices of those securities might not appreciate as anticipated. A value approach could also result in fewer investments that increase rapidly during times of market gains and could cause a fund to underperform funds that use a growth or non-value approach to investing. Value investing has gone in and out of favor during past market cycles and when value investing is out of favor or when markets are unstable, the securities of "value" companies may underperform the securities of "growth" companies.

Dividend Risk. There is no guarantee that the issuers of the stocks held by the Fund will declare dividends in the future or that, if dividends are declared, they will remain at their current levels or increase over time. High-dividend stocks may not experience high earnings growth or capital appreciation. The Fund's performance during a broad market advance could suffer because dividend paying stocks may not experience the same capital appreciation as non-dividend paying stocks.

Risks of Foreign Investing. Foreign securities are subject to special risks. Securities traded in foreign markets may be less liquid and more volatile than those traded in U.S. markets. Foreign issuers are usually not subject to the same accounting and disclosure requirements that U.S. companies are subject to, which may make it difficult for the Fund to evaluate a foreign company's operations or financial condition. A change in the value of a foreign currency against the U.S. dollar will result in a change in the U.S. dollar value of investments denominated in that foreign currency and in the value of any income or distributions the Fund may receive on those investments. The value of foreign investments may be affected by exchange control regulations, foreign taxes, higher transaction and other costs, delays in the settlement of transactions, changes in economic or monetary policy in the United States or abroad, expropriation or nationalization of a company's assets, or other political and economic factors. In addition, due to the inter-relationship of global economies and financial markets, changes in political and economic factors in one country or region could adversely affect conditions in another country or region. Investments in foreign securities may also expose the Fund to time-zone arbitrage risk. Foreign securities may trade on weekends or other days when the Fund does not price its shares. As a result, the value of the Fund's net assets may change on days when you will not be able to purchase or redeem the Fund's shares. At times, the Fund may emphasize investments in a particular country or region and may be subject to greater risks from adverse events that occur in that country or region. Foreign securities and foreign currencies held in foreign banks and securities depositories may be subject to only limited or no regulatory oversight.

Who Is the Fund Designed For? The Fund's shares are available only as an investment option under certain variable annuity contracts, variable life insurance policies and investment plans offered through insurance company separate accounts of participating insurance companies. Those investors should be willing to assume the risks of short-term share price fluctuations and losses that are typical for a fund emphasizing investments in equity securities. Since the Fund's income level will fluctuate, it is not designed for investors needing an assured level of current income. The Fund is not a complete investment program. You should carefully consider your own investment goals and risk tolerance before investing in the Fund.

An investment in the Fund is not a deposit of any bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.

Risk Not Insured Depository Institution [Text]

rr_RiskNotInsuredDepositoryInstitution

An investment in the Fund is not a deposit of any bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.

Bar Chart Does Not Reflect Sales Loads [Text]

rr_BarChartDoesNotReflectSalesLoads

Charges imposed by the insurance accounts that invest in the Fund are not included and the returns would be lower if they were.

Performance Table Heading

rr_PerformanceTableHeading

Average Annual Total Returns for the periods ended December 31, 2015

Performance Past Does Not Indicate Future [Text]

rr_PerformancePastDoesNotIndicateFuture

The Fund's past investment performance is not necessarily an indication of how the Fund will perform in the future.

Performance Availability Website Address [Text]

rr_PerformanceAvailabilityWebSiteAddress

https://www.oppenheimerfunds.com/fund/EquityIncomeFundVA

Prospectus:

rr_ProspectusTable

5 Years

rr_AverageAnnualReturnYear05

11.27%

10 Years

rr_AverageAnnualReturnYear10

5.25%

^[5]

Prospectus:

rr_ProspectusTable

Maximum Deferred Sales Charge (Load) (as % of the lower of original offering price or redemption proceeds)

rr_MaximumDeferredSalesChargeOverOther

none

Distribution and/or Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

none

Total Annual Fund Operating Expenses

rr_ExpensesOverAssets

1.52%

Total Annual Fund Operating Expenses After Fee Waiver and/or Expense Reimbursement

rr_NetExpensesOverAssets

0.80%

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

412

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

$ 1,764

Annual Return 2007

rr_AnnualReturn2007

5.89%

Annual Return 2009

rr_AnnualReturn2009

45.08%

Annual Return 2011

rr_AnnualReturn2011

(4.93%)

Annual Return 2013

rr_AnnualReturn2013

28.93%

Annual Return 2015

rr_AnnualReturn2015

(9.58%)

Highest Quarterly Return

rr_BarChartHighestQuarterlyReturn

26.91%

Lowest Quarterly Return, Label

rr_LowestQuarterlyReturnLabel

lowest return before taxes for a calendar quarter was -24.60% (4th Qtr 08)

Lowest Quarterly Return, Date

rr_BarChartLowestQuarterlyReturnDate

Dec. 31, 2008

1 Year

rr_AverageAnnualReturnYear01

(9.58%)

10 Years

rr_AverageAnnualReturnYear10

6.58%

Prospectus:

rr_ProspectusTable

Maximum Deferred Sales Charge (Load) (as % of the lower of original offering price or redemption proceeds)

rr_MaximumDeferredSalesChargeOverOther

none

Distribution and/or Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

0.25%

Total Annual Fund Operating Expenses

rr_ExpensesOverAssets

1.76%

Total Annual Fund Operating Expenses After Fee Waiver and/or Expense Reimbursement

rr_NetExpensesOverAssets

1.05%

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

489

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

$ 2,031

1 Year

rr_AverageAnnualReturnYear01

(9.82%)

10 Years

rr_AverageAnnualReturnYear10

3.63%

Prospectus:

rr_ProspectusTable

Expense Narrative [Text Block]

rr_ExpenseNarrativeTextBlock

Fees and Expenses of the Fund. This table describes the fees and expenses that you may pay if you buy and hold or redeem shares of the Fund. The accompanying prospectus of the participating insurance company provides information on initial or contingent deferred sales charges, exchange fees or redemption fees for that variable life insurance policy, variable annuity or other investment product. The fees and expenses of those products are not charged by the Fund and are not reflected in this table. Expenses would be higher if those fees were included.

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)

Portfolio Turnover [Text Block]

rr_PortfolioTurnoverTextBlock

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 rate may indicate higher transaction costs. These costs, which are not reflected in the 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 14% of the average value of its portfolio.

Strategy Narrative [Text Block]

rr_StrategyNarrativeTextBlock

Principal Investment Strategies. The Fund invests mainly in common stock of U.S. and foreign companies. The Fund can invest without limit in foreign securities and can invest in any country, including countries with developing or emerging markets. However, the Fund currently emphasizes its investments in developed markets such as the United States, Western European countries and Japan. The Fund does not limit its investments to companies in a particular market capitalization range, but primarily invests in mid- and large-cap companies.

Under normal market conditions, the Fund will invest in at least three different countries (one of which may be the United States). Typically, the Fund invests in a number of different countries. The Fund is not required to allocate its investments in any set percentages in any particular countries.

The portfolio manager primarily looks for quality companies, regardless of domicile, that have sustainable growth. His investment approach combines a thematic approach to idea generation with bottom-up, fundamental company analysis. The portfolio manager seeks to identify secular changes in the world and looks for pockets of durable change that he believes will drive global growth for the next decade. These large scale structural themes are referred to collectively as MANTRA®: Mass Affluence, New Technology, Restructuring, and Aging. The portfolio manager does not target a fixed allocation with regard to any particular theme, and may choose to focus on various sub-themes within each theme. Within each sub-theme, the portfolio manager employs fundamental company analysis to select investments for the Fund's portfolio. The economic characteristics he seeks include a combination of high return on invested capital, good cash flow characteristics, high barriers to entry, dominant market share, a strong competitive position, talented management, and balance sheet strength that the portfolio manager believes will enable the company to fund its own growth. These criteria may vary. The portfolio manager also considers how industry dynamics, market trends and general economic conditions may affect a company's earnings outlook.

The portfolio manager has a long-term investment horizon of typically three to five years. He also has a contrarian buy discipline; he buys high quality companies that fit his investment criteria when their valuations underestimate their long-term earnings potential. For example, a company's stock price may dislocate from its fundamental outlook due to a short-term earnings glitch or negative, short-term market sentiment, which can give rise to an investment opportunity. The portfolio manager monitors individual issuers for changes in earnings potential or other effects of changing market conditions that may trigger a decision to sell a security, but do not require a decision to do so.

Risk Lose Money [Text]

rr_RiskLoseMoney

The price of the Fund's shares can go up and down substantially. The value of the Fund's investments may change because of broad changes in the markets in which the Fund invests or because of poor investment selection, which could cause the Fund to underperform other funds with similar investment objectives. There is no assurance that the Fund will achieve its investment objective. When you redeem your shares, they may be worth less than what you paid for them. These risks mean that you can lose money by investing in the Fund.

Performance Narrative [Text Block]

rr_PerformanceNarrativeTextBlock

The Fund's Past Performance. The bar chart and table below provide some indication of the risks of investing in the Fund by showing changes in the Fund's Non-Service Shares performance from calendar year to calendar year and by showing how the Fund's average annual returns for the periods of time shown in the table compare with those of a broad measure of market performance. Charges imposed by the insurance accounts that invest in the Fund are not included and the returns would be lower if they were. The Fund's past investment performance is not necessarily an indication of how the Fund will perform in the future. More recent performance information is available by calling the toll-free number on the back of this prospectus and on the Fund's website at: www.oppenheimerfunds.com/fund/GlobalFundVA

Bar Chart Closing [Text Block]

rr_BarChartClosingTextBlock

During the period shown, the highest return before taxes for a calendar quarter was 22.81% (2nd Qtr 09) and the lowest return before taxes for a calendar quarter was -21.51% (4th Qtr 08).

Performance Table Narrative

rr_PerformanceTableNarrativeTextBlock

The following table shows the average annual total returns before taxes for each class of the Fund's shares.

Performance Information Illustrates Variability of Returns [Text]

rr_PerformanceInformationIllustratesVariabilityOfReturns

The bar chart and table below provide some indication of the risks of investing in the Fund by showing changes in the Fund's Non-Service Shares performance from calendar year to calendar year and by showing how the Fund's average annual returns for the periods of time shown in the table compare with those of a broad measure of market performance.

1 Year

rr_AverageAnnualReturnYear01

(2.36%)

10 Years

rr_AverageAnnualReturnYear10

4.76%

Prospectus:

rr_ProspectusTable

Maximum Deferred Sales Charge (Load) (as % of the lower of original offering price or redemption proceeds)

rr_MaximumDeferredSalesChargeOverOther

none

Distribution and/or Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

none

Total Annual Fund Operating Expenses

rr_ExpensesOverAssets

0.76%

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

244

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

$ 946

Annual Return 2007

rr_AnnualReturn2007

6.32%

Annual Return 2009

rr_AnnualReturn2009

39.77%

Annual Return 2011

rr_AnnualReturn2011

(8.29%)

Annual Return 2013

rr_AnnualReturn2013

27.31%

Annual Return 2015

rr_AnnualReturn2015

3.94%

Highest Quarterly Return

rr_BarChartHighestQuarterlyReturn

22.81%

Lowest Quarterly Return, Label

rr_LowestQuarterlyReturnLabel

lowest return before taxes for a calendar quarter was -21.51% (4th Qtr 08)

Lowest Quarterly Return, Date

rr_BarChartLowestQuarterlyReturnDate

Dec. 31, 2008

1 Year

rr_AverageAnnualReturnYear01

3.94%

10 Years

rr_AverageAnnualReturnYear10

6.21%

Prospectus:

rr_ProspectusTable

Maximum Deferred Sales Charge (Load) (as % of the lower of original offering price or redemption proceeds)

rr_MaximumDeferredSalesChargeOverOther

none

Distribution and/or Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

0.25%

Total Annual Fund Operating Expenses

rr_ExpensesOverAssets

1.01%

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

323

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

$ 1,242

1 Year

rr_AverageAnnualReturnYear01

3.67%

10 Years

rr_AverageAnnualReturnYear10

5.94%

Prospectus:

rr_ProspectusTable

Expense Narrative [Text Block]

rr_ExpenseNarrativeTextBlock

Fees and Expenses of the Fund. This table describes the fees and expenses that you may pay if you buy and hold or redeem shares of the Fund. The accompanying prospectus of the participating insurance company provides information on initial or contingent deferred sales charges, exchange fees or redemption fees for that variable life insurance policy, variable annuity or other investment product. The fees and expenses of those products are not charged by the Fund and are not reflected in this table. Expenses would be higher if those fees were included.

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)

Portfolio Turnover [Text Block]

rr_PortfolioTurnoverTextBlock

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 rate may indicate higher transaction costs. These costs, which are not reflected in the 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 67% of the average value of its portfolio.

Strategy Narrative [Text Block]

rr_StrategyNarrativeTextBlock

Principal Investment Strategies. The Fund seeks to achieve its investment objective by investing in alternative (or non-traditional) asset classes and investment strategies, including but not limited to the following:

Fundamental and quantitatively driven alpha strategies, such as global macro (investment across broad asset and/or sector classes), equity long/short, currency and volatility arbitrage strategies
Real assets, such as commodities, gold and other precious metals and minerals, real estate and master limited partnerships (MLPs)
Income alternatives, such as event-linked securities and loans

The Fund may invest in some or all of the asset classes and strategies listed above, but under normal market conditions will not invest more than 50% of its total assets in any single asset class. The Fund's sub-adviser, OppenheimerFunds, Inc. ("OFI" or the "Sub-Adviser"), will monitor the markets and allocate assets among asset classes and strategies based on changing market or economic conditions or investment opportunities. The Fund may change its emphasis on an asset class or strategy based on the Sub-Adviser's and the Fund's Sub-Sub-Advisers' evaluation of those market and economic factors and investment opportunities. In determining how much of the Fund's assets to invest in a particular asset class or strategy, the Sub-Adviser looks for opportunities across various asset classes and strategies and attempts to allocate the Fund's assets in a manner that seeks to generally diversify the portfolio across those asset classes and strategies. In pursuing its investment objective, the Fund has the flexibility to utilize a variety of investment strategies and techniques to select investments, and the list of asset classes and strategies shown above that the Fund may invest in is not exhaustive. In response to changing market or economic conditions or investment opportunities, the Sub-Adviser may change any or all of the Fund's asset classes and strategies, including changing to asset classes and strategies not listed above, or may change the Fund's asset allocations, including making no allocation at all to an asset class or strategy. The Sub-Adviser may make such changes at any time without prior approval from or notice to shareholders.

Under normal market conditions, the Fund will invest a substantial portion of its assets in a number of different countries throughout the world, including the United States. The Fund is managed to be "benchmark agnostic" in an attempt to provide positive absolute returns while limiting volatility; however, when compared to its current index (the Bank of America Merrill Lynch 3-Month U.S. Treasury Bill Index) the Fund will normally experience higher volatility than the index.

The Fund may invest in all types of equity securities, including common stock, preferred stock, convertible securities, rights and warrants, and other securities or instruments whose prices are linked to the value of common stock. The Fund may also invest in debt securities of any kind and of varying duration and maturities, including but not limited to, securities that pay a fixed or fluctuating rate of interest, securities convertible into equity securities, securities issued or guaranteed by the U.S. federal and state governments or by their agencies and instrumentalities, securities issued or guaranteed by foreign governments, international agencies or supra-national entities, securities issued or guaranteed by domestic or foreign private issuers, event-linked securities (including "catastrophe" bonds and other insurance-linked securities), senior loans, asset- and mortgage-backed securities, and debt securities whose returns are linked to the performance of a particular market benchmark or strategy (such as exchange-traded notes). The Fund can invest without limit in investment-grade and below investment-grade, high-yield debt securities (commonly referred to as "junk bonds"). "Investment-grade" debt securities are rated in one of the top four rating categories by a nationally recognized statistical rating organization such as Moody's Investors Service or Standard & Poor's. The Fund may also invest in unrated securities, in which case the Sub-Adviser may internally assign ratings to certain of those securities, after assessing their credit quality, in investment-grade or below-investment-grade categories similar to those of nationally recognized statistical rating organizations. There can be no assurance, nor is it intended, that the Sub-Adviser's credit analysis is consistent or comparable with the credit analysis process used by a nationally recognized statistical rating organization.

There is no maximum or minimum amount for investments in either equity or fixed-income securities, except as otherwise indicated in this prospectus or the Fund's statement of additional information. There are generally no restrictions on where the Fund may invest geographically or on the amount of the Fund's assets that can be invested in either U.S. or foreign securities, including real estate securities and securities of issuers in developing and emerging markets. The Fund does not limit its investments to issuers in a particular market capitalization range and at times may invest a substantial portion of its assets in one or more particular market capitalization ranges. The Fund's investment in MLPs is limited to no more than 25% of its total assets.

The Fund can take long positions in investments that are believed to be undervalued and short positions in investments that are believed to be overvalued or which are established for hedging purposes, including long and short positions in equities and equity-sensitive convertibles, fixed income securities, and derivatives or other types of securities. The Fund's overall long or short positioning can vary based on market and economic conditions, and the Fund may take both long and short positions simultaneously. The Fund can seek to take advantage of arbitrage opportunities in equity and fixed income, commodity, and currency prices and market volatility.

The Fund may invest in the securities of other investment companies, subject to any limits imposed by the Investment Company Act of 1940 Act, as amended, including other entities sponsored and/or advised by the Fund's investment advisor, OFI Global or an affiliate. The Fund may use derivatives to seek income or capital gain, to hedge against the risks of other investments, or as a substitute for direct investment in a particular asset class. Structured notes, options, futures, forward contracts, and swaps are some of the types of derivatives the Fund can use.

In times of adverse or unstable market or economic conditions, such as reduced market liquidity or increased volatility, the Fund may hold a portion of its assets in cash, money market securities or other similar, liquid investments, including in shares of money market mutual funds in the Oppenheimer family of funds. This may also include shares of funds that provide exposure to inflation-protected debt securities and short-term investment-grade debt securities. This will generally occur at times when there is an inability to immediately invest funds received from purchases of Fund shares or from redemptions of other investments or to maintain liquidity.

The Fund has established a Cayman Islands exempted company that is wholly-owned and controlled by the Fund (the "Subsidiary"). The Fund may invest up to 25% of its total assets in the Subsidiary. The Subsidiary invests primarily in commodity-linked derivatives (including commodity futures, financial futures, options and swap contracts) and exchange-traded funds related to gold or other special minerals ("Gold ETFs"). The Subsidiary may also invest in certain fixed-income securities and other investments that may serve as margin or collateral for its derivatives positions. Investments in the Subsidiary are intended to provide the Fund with exposure to commodities market returns within the limitations of the federal tax requirements that apply to the Fund. The Fund applies its investment restrictions and compliance policies and procedures, on a look-through basis, to the Subsidiary. The Fund's investment in the Subsidiary may vary based on the portfolio managers' use of different types of commodity-linked derivatives, fixed-income securities, Gold ETFs, and other investments. Since the Fund may invest a substantial portion of its assets in the Subsidiary, which may hold certain of the investments described in this prospectus, the Fund may be considered to be investing indirectly in those investments through its Subsidiary. Therefore, references in this prospectus to investments by the Fund also may be deemed to include the Fund's indirect investments through the Subsidiary.

Risk Lose Money [Text]

rr_RiskLoseMoney

The price of the Fund's shares can go up and down substantially. The value of the Fund's investments may change because of broad changes in the markets in which the Fund invests or because of poor investment selection, which could cause the Fund to underperform other funds with similar investment objectives. There is no assurance that the Fund will achieve its investment objective. When you redeem your shares, they may be worth less than what you paid for them. These risks mean that you can lose money by investing in the Fund.

Performance Narrative [Text Block]

rr_PerformanceNarrativeTextBlock

The Fund's Past Performance. The bar chart and table below provide some indication of the risks of investing in the Fund by showing changes in the Fund's Non-Service Shares performance from calendar year to calendar year and by showing how the Fund's average annual returns for the periods of time shown in the table compare with those of a broad measure of market performance. Charges imposed by the insurance accounts that invest in the Fund are not included and the returns would be lower if they were. The Fund's past investment performance is not necessarily an indication of how the Fund will perform in the future. More recent performance information is available by calling the toll-free number on the back of this prospectus and on the Fund's website at: https://www.oppenheimerfunds.com/fund/GlobalMultiAlternativesFundVA

Bar Chart Closing [Text Block]

rr_BarChartClosingTextBlock

During the period shown, the highest return before taxes for a calendar quarter was 4.33% (1st Qtr 14) and the lowest return before taxes for a calendar quarter was -2.39% (3rd Qtr 15).

Performance Table Narrative

rr_PerformanceTableNarrativeTextBlock

The following table shows the average annual total returns before taxes for each class of the Fund's shares.

Performance Information Illustrates Variability of Returns [Text]

rr_PerformanceInformationIllustratesVariabilityOfReturns

The bar chart and table below provide some indication of the risks of investing in the Fund by showing changes in the Fund's Non-Service Shares performance from calendar year to calendar year and by showing how the Fund's average annual returns for the periods of time shown in the table compare with those of a broad measure of market performance.

1 Year

rr_AverageAnnualReturnYear01

0.05%

Maximum Sales Charge (Load) imposed on purchases (as % of offering price)

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

none

Management Fees

rr_ManagementFeesOverAssets

1.03%

^[8]

Acquired Fund Fees and Expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.01%

Borrowing Expenses on Securities Sold Short

rr_Component2OtherExpensesOverAssets

0.05%

Other Expenses Over Assets

rr_OtherExpensesOverAssets

0.43%

Fee Waiver and/or Expense Reimbursement

rr_FeeWaiverOrReimbursementOverAssets

(0.05%)

^[9]

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

$ 146

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

804

Annual Return 2014

rr_AnnualReturn2014

6.02%

Highest Quarterly Return, Label

rr_HighestQuarterlyReturnLabel

highest return before taxes for a calendar quarter was 4.33% (1st Qtr 14)

Highest Quarterly Return, Date

rr_BarChartHighestQuarterlyReturnDate

Mar. 31, 2014

Lowest Quarterly Return

rr_BarChartLowestQuarterlyReturn

(2.39%)

Inception Date

rr_AverageAnnualReturnInceptionDate

Nov. 14, 2013

5 Years

rr_AverageAnnualReturnYear05

0.78%

Prospectus:

rr_ProspectusTable

Maximum Deferred Sales Charge (Load) (as % of the lower of original offering price or redemption proceeds)

rr_MaximumDeferredSalesChargeOverOther

none

Distribution and/or Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

0.25%

Dividend Expenses on Securities Sold Short

rr_Component1OtherExpensesOverAssets

0.17%

Other Operating Expenses

rr_Component3OtherExpensesOverAssets

0.20%

Total Annual Fund Operating Expenses

rr_ExpensesOverAssets

1.71%

Total Annual Fund Operating Expenses After Fee Waiver and/or Expense Reimbursement

rr_NetExpensesOverAssets

1.66%

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

538

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

$ 2,032

1 Year

rr_AverageAnnualReturnYear01

(3.68%)

Objective, Primary [Text Block]

rr_ObjectivePrimaryTextBlock

Investment Objective. The Fund seeks total return.

Shareholder Fees Caption [Text]

rr_ShareholderFeesCaption

Shareholder Fees (fees paid directly from your investment)

Expense Example Narrative [Text Block]

rr_ExpenseExampleNarrativeTextBlock

Example. The following 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 a class of shares of the Fund for the time periods indicated. 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 expenses would be as follows, whether or not you redeemed your shares:

Portfolio Turnover, Rate

rr_PortfolioTurnoverRate

79.00%

Risk Narrative [Text Block]

rr_RiskNarrativeTextBlock

Principal Risks. The price of the Fund's shares can go up and down substantially. The value of the Fund's investments may change because of broad changes in the markets in which the Fund invests or because of poor investment selection, which could cause the Fund to underperform other funds with similar investment objectives. There is no assurance that the Fund will achieve its investment objective. When you redeem your shares, they may be worth less than what you paid for them. These risks mean that you can lose money by investing in the Fund.

Risks of Investing in Debt Securities. Debt securities may be subject to interest rate risk, duration risk, credit risk, credit spread risk, extension risk, reinvestment risk, prepayment risk and event risk. Interest rate risk is the risk that when prevailing interest rates fall, the values of already-issued debt securities generally rise; and when prevailing interest rates rise, the values of already-issued debt securities generally fall, and they may be worth less than the amount the Fund paid for them. When interest rates change, the values of longer-term debt securities usually change more than the values of shorter-term debt securities. Risks associated with rising interest rates are heightened given that interest rates in the U.S. are at, or near, historic lows. Duration risk is the risk that longer-duration debt securities will be more volatile and more likely to decline in price in a rising interest rate environment than shorter-duration debt securities. Credit risk is the risk that the issuer of a security might not make interest and principal payments on the security as they become due. If an issuer fails to pay interest or repay principal, the Fund's income or share value might be reduced. Adverse news about an issuer or a downgrade in an issuer's credit rating, for any reason, can also reduce the market value of the issuer's securities. "Credit spread" is the difference in yield between securities that is due to differences in their credit quality. There is a risk that credit spreads may increase when the market expects lower-grade bonds to default more frequently. Widening credit spreads may quickly reduce the market values of the Fund's lower-rated and unrated securities. Some unrated securities may not have an active trading market or may trade less actively than rated securities, which means that the Fund might have difficulty selling them promptly at an acceptable price. Extension risk is the risk that an increase in interest rates could cause principal payments on a debt security to be repaid at a slower rate than expected. Extension risk is particularly prevalent for a callable security where an increase in interest rates could result in the issuer of that security choosing not to redeem the security as anticipated on the security's call date. Such a decision by the issuer could have the effect of lengthening the debt security's expected maturity, making it more vulnerable to interest rate risk and reducing its market value. Reinvestment risk is the risk that when interest rates fall the Fund may be required to reinvest the proceeds from a security's sale or redemption at a lower interest rate. Callable bonds are generally subject to greater reinvestment risk than non-callable bonds. Prepayment risk is the risk that the issuer may redeem the security prior to the expected maturity or that borrowers may repay the loans that underlie these securities more quickly than expected, thereby causing the issuer of the security to repay the principal prior to the expected maturity. The Fund may need to reinvest the proceeds at a lower interest rate, reducing its income. Event risk is the risk that an issuer could be subject to an event, such as a buyout or debt restructuring, that interferes with its ability to make timely interest and principal payments and cause the value of its debt securities to fall.

Fixed-Income Market Risks. The fixed-income securities market can be susceptible to increases in volatility and decreases in liquidity. Liquidity may decline unpredictably in response to overall economic conditions or credit tightening. During times of reduced market liquidity, the Fund may not be able to readily sell bonds at the prices at which they are carried on the Fund's books and could experience a loss. If the Fund needed to sell large blocks of bonds to meet shareholder redemption requests or to raise cash, those sales could further reduce the bonds' prices, particularly for lower-rated and unrated securities. An unexpected increase in redemptions by Fund shareholders, which may be triggered by general market turmoil or an increase in interest rates, could cause the Fund to sell its holdings at a loss or at undesirable prices.

Economic and other market developments can adversely affect fixed-income securities markets in the United States, Europe and elsewhere. At times, participants in debt securities markets may develop concerns about the ability of certain issuers of debt securities to make timely principal and interest payments, or they may develop concerns about the ability of financial institutions that make markets in certain debt securities to facilitate an orderly market. Those concerns may impact the market price or value of those debt securities and may cause increased volatility in those debt securities or debt securities markets. Under some circumstances, as was the case during the latter half of 2008 and early 2009, those concerns may cause reduced liquidity in certain debt securities markets, reducing the willingness of some lenders to extend credit, and making it more difficult for borrowers to obtain financing on attractive terms (or at all). A lack of liquidity or other adverse credit market conditions may hamper the Fund's ability to sell the debt securities in which it invests or to find and purchase suitable debt instruments.

Risks of Below-Investment-Grade Securities. Below-investment-grade debt securities (also referred to as "junk" bonds), whether rated or unrated, may be subject to greater price fluctuations than investment-grade securities, increased credit risk and a greater risk that the issuer might not be able to pay interest and principal when due, especially during times of weakening economic conditions or rising interest rates. The market for below-investment-grade securities may be less liquid and therefore these securities may be harder to value or sell at an acceptable price, especially during times of market volatility or decline.

Because the Fund can invest without limit in below-investment-grade securities, the Fund's credit risks are greater than those of funds that buy only investment-grade securities. Credit rating downgrades of a single issuer or related similar issuers whose securities the Fund holds in significant amounts could substantially and unexpectedly increase the Fund's exposure to below-investment-grade securities and the risks associated with them, especially liquidity and default risk.

Risks of Mortgage-Related Securities. The Fund can buy interests in pools of residential or commercial mortgages in the form of "pass-through" mortgage securities. They may be issued or guaranteed by the U.S. government, or its agencies and instrumentalities, or by private issuers. Mortgage-related securities issued by private issuers are not U.S. government securities, and are subject to greater credit risks than mortgage-related securities that are U.S. government securities. Private-issuer mortgage-backed securities are also subject to interest rate risk, and the market for private-issuer mortgage-backed securities may be volatile at times and may be less liquid than the markets for other types of securities. In addition, a substantial portion of the Fund's assets may be subject to "forward roll" transactions (also referred to as "mortgage dollar rolls") at any given time, which subject the Fund to the risk that market value of the mortgage-related securities involved might decline, and that the counterparty might default in its obligations.

Sector Allocation Risk. In allocating investments among its three principal market sectors, the Fund seeks to take advantage of the potential lack of performance correlation between those sectors. There is the risk that the evaluations regarding the sectors' relative performance may be incorrect and those sectors may all perform in a similar manner under certain market conditions.

Risks of Foreign Investing. Foreign securities are subject to special risks. Securities traded in foreign markets may be less liquid and more volatile than those traded in U.S. markets. Foreign issuers are usually not subject to the same accounting and disclosure requirements that U.S. companies are subject to, which may make it difficult for the Fund to evaluate a foreign company's operations or financial condition. A change in the value of a foreign currency against the U.S. dollar will result in a change in the U.S. dollar value of investments denominated in that foreign currency and in the value of any income or distributions the Fund may receive on those investments. The value of foreign investments may be affected by exchange control regulations, foreign taxes, higher transaction and other costs, delays in the settlement of transactions, changes in economic or monetary policy in the United States or abroad, expropriation or nationalization of a company's assets, or other political and economic factors. In addition, due to the inter-relationship of global economies and financial markets, changes in political and economic factors in one country or region could adversely affect conditions in another country or region. Investments in foreign securities may also expose the Fund to time-zone arbitrage risk. Foreign securities may trade on weekends or other days when the Fund does not price its shares. As a result, the value of the Fund's net assets may change on days when you will not be able to purchase or redeem the Fund's shares. At times, the Fund may emphasize investments in a particular country or region and may be subject to greater risks from adverse events that occur in that country or region. Foreign securities and foreign currencies held in foreign banks and securities depositories may be subject to only limited or no regulatory oversight.

Risks of Developing and Emerging Markets. Investments in developing and emerging markets are subject to all the risks associated with foreign investing, however, these risks may be magnified in developing and emerging markets. Developing or emerging market countries may have less well-developed securities markets and exchanges that may be substantially less liquid than those of more developed markets. Settlement procedures in developing or emerging markets may differ from those of more established securities markets, and settlement delays may result in the inability to invest assets or to dispose of portfolio securities in a timely manner. Securities prices in developing or emerging markets may be significantly more volatile than is the case in more developed nations of the world, and governments of developing or emerging market countries may also be more unstable than the governments of more developed countries. Such countries' economies may be more dependent on relatively few industries or investors that may be highly vulnerable to local and global changes. Developing or emerging market countries also may be subject to social, political or economic instability. The value of developing or emerging market countries' currencies may fluctuate more than the currencies of countries with more mature markets. Investments in developing or emerging market countries may be subject to greater risks of government restrictions, including confiscatory taxation, expropriation or nationalization of a company's assets, restrictions on foreign ownership of local companies, restrictions on withdrawing assets from the country, protectionist measures, and practices such as share blocking. In addition, the ability of foreign entities to participate in privatization programs of certain developing or emerging market countries may be limited by local law. Investments in securities of issuers in developing or emerging market countries may be considered speculative.

Eurozone Investment Risks. Certain of the regions in which the Fund invests, including the European Union (EU), currently experience significant financial difficulties. Following the recent global economic crisis, some of these countries have depended on, and may continue to be dependent on, the assistance from others such as the European Central Bank (ECB) or other governments or institutions, and failure to implement reforms as a condition of assistance could have a significant adverse effect on the value of investments in those and other European countries. In addition, countries that have adopted the euro are subject to fiscal and monetary controls that could limit the ability to implement their own economic policies, and could voluntarily abandon, or be forced out of, the euro. Such events could impact the market values of Eurozone and various other securities and currencies, cause redenomination of certain securities into less valuable local currencies, and create more volatile and illiquid markets.

Risks of Sovereign Debt. Sovereign debt instruments are subject to the risk that a governmental entity may delay or refuse, or otherwise be unable, to pay interest or repay principal on its sovereign debt. If a governmental entity defaults, it may ask for more time in which to pay or for further loans. There is no legal process for collecting sovereign debt that a government does not pay nor are there bankruptcy proceedings through which all or part of such sovereign debt may be collected. A restructuring or default of sovereign debt may also cause additional impacts to the financial markets, such as downgrades to credit ratings, a flight to quality debt instruments, disruptions in common trading markets or unions, reduced liquidity, increased volatility, and heightened financial sector, foreign securities and currency risk, among others.

Risks of Derivative Investments. Derivatives may involve significant risks. Derivatives may be more volatile than other types of investments, may require the payment of premiums, may increase portfolio turnover, may be illiquid, and may not perform as expected. Derivatives are subject to counterparty risk and the Fund may lose money on a derivative investment if the issuer or counterparty fails to pay the amount due. Some derivatives have the potential for unlimited loss, regardless of the size of the Fund's initial investment. As a result of these risks, the Fund could realize little or no income or lose money from its investment, or a hedge might be unsuccessful. In addition, under new rules enacted and currently being implemented under financial reform legislation, certain over-the-counter derivatives are (or soon will be) required to be executed on a regulated market and/or cleared through a clearinghouse. It is unclear how these regulatory changes will affect counterparty risk, and entering into a derivative transaction with a clearinghouse may entail further risks and costs.

Risks of Commodity-Linked Investments. Commodity-linked investments are considered speculative and have substantial risks, including the risk of loss of a significant portion of their principal value. Prices of commodities and commodity-linked investments may fluctuate significantly over short periods due to a variety of factors, including for example agricultural, economic and regulatory developments. These risks may make commodity-linked investments more volatile than other types of investments. Commodity-linked investments entail the risk that the Fund might not qualify as a "regulated investment company" under the Internal Revenue Code and its income may become subject to fund-level income taxes, reducing returns to shareholders.

Risks Of Investments In The Fund's Wholly-Owned Subsidiary. The Subsidiary is not registered under the Investment Company Act of 1940 and is not subject to its investor protections (except as otherwise noted in this prospectus). As an investor in the Subsidiary, the Fund does not have all of the protections offered to investors by the Investment Company Act of 1940. However, the Subsidiary is wholly-owned and controlled by the Fund and managed by the Manager and the Sub-Adviser. Therefore, the Fund's ownership and control of the Subsidiary make it unlikely that the Subsidiary would take actions contrary to the interests of the Fund or its shareholders.

Changes in the laws of the Cayman Islands (where the Subsidiary is organized) could prevent the Subsidiary from operating as described in this prospectus and could negatively affect the Fund and its shareholders. For example, the Cayman Islands currently does not impose certain taxes on exempted companies like the Subsidiary, including income and capital gains tax, among others. If Cayman Islands laws were changed to require such entities to pay Cayman Islands taxes, the investment returns of the Fund would likely decrease.

Risks of Investing in Regulation S Securities. Regulation S securities may be less liquid than publicly traded securities and may not be subject to the disclosure and other investor protection requirements that would be applicable if they were publicly traded. Accordingly, Regulation S securities may involve a high degree of business and financial risk and may result in substantial losses.

Risks of Senior Loans and Other Loans. The Fund may invest in loans, and in particular, in floating rate loans (sometimes referred to as "adjustable rate loans") that hold (or in the judgment of the investment adviser, hold) a senior position in the capital structure of U.S. and foreign corporations, partnerships or other business entities that, under normal circumstances, allow them to have priority of claim ahead of (or at least as high as) other obligations of a borrower in the event of liquidation. These investments are referred to as "Senior Loans." Loans may be collateralized or uncollateralized. They typically pay interest at rates that are reset periodically based on a reference benchmark that reflects current interest rates, plus a margin or premium. In addition to the risks typically associated with debt securities, such as credit and interest rate risk, senior loans are also subject to the risk that a court could subordinate a senior loan, which typically holds a senior position in the capital structure of a borrower, to presently existing or future indebtedness or take other action detrimental to the holders of senior loans. Loans usually have mandatory and optional prepayment provisions. If a borrower prepays a loan, the Fund will have to reinvest the proceeds in other loans or financial assets that may pay lower rates of return.

Loans are subject to the risk that the value of the collateral, if any, securing a loan may decline, be insufficient to meet the obligations of the borrower, or be difficult to liquidate. In the event of a default, the Fund may have difficulty collecting on any collateral and would not have the ability to collect on any collateral for an uncollateralized loan. In addition, the lenders' security interest or their enforcement of their security under the loan agreement may be found by a court to be invalid or the collateral may be used to pay other outstanding obligations of the borrower. The Fund's access to collateral, if any, may be limited by bankruptcy, other insolvency laws, or by the type of loan the Fund has purchased. As a result, a collateralized loan may not be fully collateralized and can decline significantly in value.

Loan investments are often issued in connection with highly leveraged transactions. Such transactions include leveraged buyout loans, leveraged recapitalization loans, and other types of acquisition financing. These obligations are subject to greater credit risks than other investments including a greater possibility that the borrower may default or enter bankruptcy.

Due to restrictions on transfers in loan agreements and the nature of the private syndication of loans including, for example, the lack of publicly-available information, some loans are not as easily purchased or sold as publicly-traded securities. Some loans are illiquid, which may make it difficult for the Fund to value them or dispose of them at an acceptable price when it wants to. The market price of investments in floating rate loans are expected to be less affected by changes in interest rates than fixed-rate investments because floating rate loans pay a floating rate of interest that will fluctuate as market interests rates do and therefore should more closely track market movements in interest rates.

Compared to securities and to certain other types of financial assets, purchases and sales of loans take relatively longer to settle. This extended settlement process can (i) increase the counterparty credit risk borne by the Fund; (ii) leave the Fund unable to timely vote, or otherwise act with respect to, loans it has agreed to purchase; (iii) delay the Fund from realizing the proceeds of a sale of a loan; (iv) inhibit the Fund's ability to re-sell a loan that it has agreed to purchase if conditions change (leaving the Fund more exposed to price fluctuations); (v) prevent the Fund from timely collecting principal and interest payments; and (vi) expose the Fund to adverse tax or regulatory consequences.

To the extent the extended loan settlement process gives rise to short-term liquidity needs, such as the need to satisfy redemption requests, the Fund may hold cash, sell investments or temporarily borrow from banks or other lenders.

If the Fund invests in a loan via a participation, the Fund will be exposed to the ongoing counterparty risk of the entity providing exposure to the loan (and, in certain circumstances, such entity's credit risk), in addition to the exposure the Fund has to the creditworthiness of the borrower.

In certain circumstances, loans may not be deemed to be securities, and in the event of fraud or misrepresentation by a borrower or an arranger, lenders will not have the protection of the anti-fraud provisions of the federal securities laws, as would be the case for bonds or stocks. Instead, in such cases, lenders generally rely on the contractual provisions in the loan agreement itself, and common-law fraud protections under applicable state law.

Who Is the Fund Designed For? The Fund's shares are available only as an investment option under certain variable annuity contracts, variable life insurance policies and other investment plans offered through insurance company separate accounts of participating insurance companies. The Fund is designed primarily for investors seeking total return from a fund that invests in a variety of domestic and foreign debt securities, including government and lower-grade debt securities. Those investors should be willing to assume the greater risks of short-term share price fluctuations and the special credit risks that are typical for a fund that invests mainly in lower-grade fixed-income securities and foreign securities. The Fund is not designed for investors needing an assured level of current income. The Fund is not a complete investment program and may not be appropriate for all investors. You should carefully consider your own investment goals and risk tolerance before investing in the Fund.

An investment in the Fund is not a deposit of any bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.

Risk Not Insured Depository Institution [Text]

rr_RiskNotInsuredDepositoryInstitution

An investment in the Fund is not a deposit of any bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.

Bar Chart Does Not Reflect Sales Loads [Text]

rr_BarChartDoesNotReflectSalesLoads

Charges imposed by the insurance accounts that invest in the Fund are not included and the returns would be lower if they were.

Performance Table Heading

rr_PerformanceTableHeading

Average Annual Total Returns for the periods ended December 31, 2015

Performance Past Does Not Indicate Future [Text]

rr_PerformancePastDoesNotIndicateFuture

The Fund's past investment performance is not necessarily an indication of how the Fund will perform in the future.

Performance Availability Website Address [Text]

rr_PerformanceAvailabilityWebSiteAddress

https://www.oppenheimerfunds.com/fund/GlobalStrategicIncomeFundVA

Prospectus:

rr_ProspectusTable

5 Years

rr_AverageAnnualReturnYear05

3.25%

1 Year

rr_AverageAnnualReturnYear01

(3.57%)

10 Years

rr_AverageAnnualReturnYear10

3.44%

Prospectus:

rr_ProspectusTable

5 Years

rr_AverageAnnualReturnYear05

(1.30%)

1 Year

rr_AverageAnnualReturnYear01

(4.99%)

10 Years

rr_AverageAnnualReturnYear10

7.06%

Prospectus:

rr_ProspectusTable

5 Years

rr_AverageAnnualReturnYear05

2.10%

Maximum Sales Charge (Load) imposed on purchases (as % of offering price)

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

none

Management Fees

rr_ManagementFeesOverAssets

0.59%

^[10]

Acquired Fund Fees and Expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.03%

Total Annual Fund Operating Expenses

rr_ExpensesOverAssets

0.77%

Total Annual Fund Operating Expenses After Fee Waiver and/or Expense Reimbursement

rr_NetExpensesOverAssets

0.74%

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

244

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

$ 955

Annual Return 2007

rr_AnnualReturn2007

9.69%

Annual Return 2009

rr_AnnualReturn2009

18.83%

Annual Return 2011

rr_AnnualReturn2011

0.85%

Annual Return 2013

rr_AnnualReturn2013

(0.13%)

Annual Return 2015

rr_AnnualReturn2015

(2.26%)

Highest Quarterly Return

rr_BarChartHighestQuarterlyReturn

10.00%

Lowest Quarterly Return, Label

rr_LowestQuarterlyReturnLabel

lowest return before taxes for a calendar quarter was -9.84% (4th Qtr 08)

Lowest Quarterly Return, Date

rr_BarChartLowestQuarterlyReturnDate

Dec. 31, 2008

1 Year

rr_AverageAnnualReturnYear01

(2.26%)

10 Years

rr_AverageAnnualReturnYear10

4.74%

Prospectus:

rr_ProspectusTable

Maximum Deferred Sales Charge (Load) (as % of the lower of original offering price or redemption proceeds)

rr_MaximumDeferredSalesChargeOverOther

none

Distribution and/or Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

0.25%

Other Expenses Over Assets

rr_OtherExpensesOverAssets

0.15%

Fee Waiver and/or Expense Reimbursement

rr_FeeWaiverOrReimbursementOverAssets

(0.03%)

^[11]

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

$ 101

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

563

Inception Date

rr_AverageAnnualReturnInceptionDate

Mar. 19, 2001

5 Years

rr_AverageAnnualReturnYear05

2.55%

Objective, Primary [Text Block]

rr_ObjectivePrimaryTextBlock

Investment Objective. The Fund seeks income consistent with stability of principal.

Shareholder Fees Caption [Text]

rr_ShareholderFeesCaption

Shareholder Fees (fees paid directly from your investment)

Expense Example Narrative [Text Block]

rr_ExpenseExampleNarrativeTextBlock

Example. The following Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. Sales charges and fees for the variable life insurance policy, variable annuity or other investment product offered by participating insurance companies are not charged by the Fund and are not reflected in the Example. The Example assumes that you invest $10,000 in a class of shares of the Fund for the time periods indicated. The Example also assumes that your investment has a 5% return each year and that the Fund's operating expenses remain the same. Any applicable fee waivers and/or expense reimbursements are reflected in the below examples for the period during which such fee waivers and/or expense reimbursements are in effect. Although your actual costs may be higher or lower, based on these assumptions your expenses would be as follows, whether or not you redeemed your shares:

Risk Narrative [Text Block]

rr_RiskNarrativeTextBlock

Principal Risks. All investments carry risks to some degree. The Fund's investments are subject to changes in their value from a number of factors. However, the Fund's investments must meet the special rules under federal law for money market funds. Those requirements include maintaining high credit quality, a short average maturity and diversification of the Fund's investments among issuers. Those provisions are designed to help minimize credit risks, to reduce the effects of changes in prevailing interest rates and to reduce the effect on the Fund's portfolio of a default by any one issuer. Since income on short-term securities tends to be lower than income on longer-term debt securities, the Fund's yield will likely be lower than the yield on longer-term fixed-income funds.

Even so, there are risks that an issuer of an obligation that the Fund holds might have its credit rating downgraded or might default on its obligations, or that interest rates might rise sharply, causing the value of the Fund's investments to fall. Also, there is the risk that the value of your investment could be eroded over time by the effects of inflation, or that poor security selection could cause the Fund to underperform other funds that have a similar objective. If there is an unexpectedly high demand for the redemption of Fund shares, the Fund might need to sell portfolio securities prior to their maturity, possibly at a loss. As a result, there is a risk that the Fund's shares could fall below $1.00 per share.

You could lose money by investing in the Fund. Although the Fund seeks to preserve the value of your investment at $1.00 per share, it cannot guarantee it will do so. An investment in the Fund is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency. The Fund's sponsor has no legal obligation to provide financial support to the Fund, and you should not expect that the sponsor will provide financial support to the Fund at any time.

Risks of Money Market Instruments. Money market instruments may be subject to interest rate risk, credit risk, extension risk, reinvestment risk, prepayment risk, and event risk. Interest rate risk is the risk that when prevailing interest rates fall, the values of already-issued debt securities generally rise; and when prevailing interest rates rise, the values of already-issued debt securities generally fall, and they may be worth less than the amount the Fund paid for them. When interest rates change, the values of longer-term debt securities usually change more than the values of shorter-term debt securities. Risks associated with rising interest rates are heightened given that interest rates in the U.S. are at, or near, historic lows. Credit risk is the risk that the issuer of a security might not make interest and principal payments on the security as they become due. If an issuer fails to pay interest or repay principal, the Fund's income or share value might be reduced. Adverse news about an issuer or a downgrade in an issuer's credit rating, for any reason, can also reduce the market value of the issuer's securities. Extension risk is the risk that an increase in interest rates could cause principal payments on a debt security to be repaid at a slower rate than expected. Extension risk is particularly prevalent for a callable security where an increase in interest rates could result in the issuer of that security choosing not to redeem the security as anticipated on the security's call date. Such a decision by the issuer could have the effect of lengthening the debt security's expected maturity, making it more vulnerable to interest rate risk and reducing its market value. Reinvestment risk is the risk that when interest rates fall the Fund may be required to reinvest the proceeds from a security's sale or redemption at a lower interest rate. Callable bonds are generally subject to greater reinvestment risk than non-callable bonds. Prepayment risk is the risk that the issuer may redeem the security prior to the expected maturity or that borrowers may repay the loans that underlie these securities more quickly than expected, thereby causing the issuer of the security to repay the principal prior to the expected maturity. The Fund may need to reinvest the proceeds at a lower interest rate, reducing its income. Event risk is the risk that an issuer could be subject to an event, such as a buyout or debt restructuring, that interferes with its ability to make timely interest and principal payments and cause the value of its debt securities to fall.

Fixed-Income Market Risks. The fixed-income securities market can be susceptible to increases in volatility and decreases in liquidity. Liquidity may decline unpredictably in response to overall economic conditions or credit tightening. During times of reduced market liquidity, the Fund may not be able to readily sell bonds at the prices at which they are carried on the Fund's books and could experience a loss. If the Fund needed to sell large blocks of bonds to meet shareholder redemption requests or to raise cash, those sales could further reduce the bonds' prices, particularly for lower-rated and unrated securities. An unexpected increase in redemptions by Fund shareholders—which may be triggered by general market turmoil or an increase in interest rates—could cause the Fund to sell its holdings at a loss or at undesirable prices.

Economic and other market developments can adversely affect fixed-income securities markets in the United States, Europe and elsewhere. At times, participants in debt securities markets may develop concerns about the ability of certain issuers of debt securities to make timely principal and interest payments, or they may develop concerns about the ability of financial institutions that make markets in certain debt securities to facilitate an orderly market. Those concerns may impact the market price or value of those debt securities and may cause increased volatility in those debt securities or debt securities markets. Under some circumstances, as was the case during the latter half of 2008 and early 2009, those concerns could cause reduced liquidity in certain debt securities markets. A lack of liquidity or other adverse credit market conditions may hamper the Fund's ability to sell the debt securities in which it invests or to find and purchase suitable debt instruments.

Government Securities Risk. The Fund invests in securities issued or guaranteed by the U.S. government or its agencies and instrumentalities (such as securities issued by the Government National Mortgage Association ("Ginnie Mae"), the Federal National Mortgage Association ("Fannie Mae"), or the Federal Home Loan Mortgage Corporation ("Freddie Mac")). U.S. government securities are subject to market risk, interest rate risk and credit risk. U.S. government securities include zero coupon securities, which tend to be subject to greater market risk than interest-paying securities of similar maturities.

Risks of Repurchase Agreements. In a repurchase transaction, the Fund buys a security and simultaneously sells it back to the vendor for delivery at a future date. If the seller fails to pay the repurchase price on the delivery date, the Fund may incur costs in disposing of the collateral and may experience losses if there is any delay in its ability to do so. If the default on the part of the seller is due to its bankruptcy, the Fund's ability to liquidate the collateral may be delayed or limited.

Net Asset Value Risk. There is no assurance that the Fund will maintain a net asset value of $1.00 per share on a continuous basis. Additionally, there can be no assurance that the Fund's affiliates will purchase distressed assets from the Fund, make capital infusions, enter into capital support agreements or take other actions to ensure that the Fund maintains a net asset value of $1.00 per share. The failure of any money market fund to maintain a stable net asset value, could place increased redemption pressure on other money market funds, including the Fund.

Regulatory Risk. In July 2014, the SEC adopted reforms to money market fund regulation, which, when implemented, may affect the Fund's operations and/or return potential.

Yield Risk. During periods of extremely low short-term interest rates, the Fund may not be able to maintain a positive yield.

The rate of the Fund's income will vary from day to day, generally reflecting changes in short-term interest rates and in the fixed-income securities market. There is no assurance that the Fund will achieve its investment objective.

Cash Risk. At times, the Fund may hold some of its assets in cash, which may negatively affect the Fund's performance. Maintaining cash positions may also subject the Fund to additional risks and costs, such as increased exposure to the custodian bank holding the assets and any fees imposed for large cash balances.

Risk of Investing in Floating and Variable Rate Obligations. Some fixed-income securities have variable or floating interest rates that provide for a periodic adjustment in the interest rate paid on the securities. The rate adjustment intervals may be regular and range from daily up to annually, or may be based on an event, such as a change in the stated prevailing market rate. Floating and variable rate securities may be subject to greater liquidity risk than other debt securities, meaning that there may be limitations on the Fund's ability to sell the securities at any given time. Such securities also may lose value.

Large Shareholder Transactions Risk. Large transactions by shareholders can impact the Fund's expense ratio, yield and potentially its net asset value. A large redemption of Fund shares by a large shareholder may have a negative effect on the Fund's net asset value and yield, as the Fund may be forced to sell a large portion of its portfolio holdings at an inopportune time. A large redemption of Fund shares may also result in an increase in the Fund's expense ratio, since a large redemption may result in the Fund's current expenses being allocated over a smaller asset base. In order to be able to meet reasonably foreseeable requests for redemptions of Fund shares, the Fund may be required to consider factors that could affect the Fund's liquidity needs, including characteristics of the Fund's investors and their likely redemptions. This may require the Fund to maintain sufficiently liquid assets in lower-yielding securities that are easier to sell, which may have a negative impact on the Fund's yield. Similarly, a large purchase of Fund shares by a large shareholder may have a negative effect on the Fund's yield, as the Fund may be unable to deploy a larger cash position into new investments as quickly as it could with a smaller cash position. Large transactions may also increase transaction costs.

Who Is the Fund Designed For? The Fund's shares are available only as an investment option under certain variable annuity contracts, variable life insurance policies and investment plans offered through insurance company separate accounts of participating insurance companies. The Fund is designed for investors who want to earn income at money market rates while maintaining easy access to their investment and seeking to preserve its value. The Fund will invest in a variety of money market instruments to seek income consistent with stability of principal and to try to maintain a stable share price of $1.00. Since income on short-term securities tends to be lower than income on longer term debt securities, the Fund's yield will likely be lower than the yield on longer-term fixed income funds. The Fund does not invest for the purpose of seeking capital appreciation or gains and is not a complete investment program.

An investment in the Fund is not a deposit of any bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency. Although the Fund seeks to preserve the value of your investment at $1.00 per share, it is possible to lose money by investing in the Fund.

Risk Not Insured Depository Institution [Text]

rr_RiskNotInsuredDepositoryInstitution

An investment in the Fund is not a deposit of any bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.

Bar Chart Does Not Reflect Sales Loads [Text]

rr_BarChartDoesNotReflectSalesLoads

Charges imposed by the insurance accounts that invest in the Fund are not included and the returns would be lower if they were.

Performance Table Heading

rr_PerformanceTableHeading

Average Annual Total Returns for the periods ended December 31, 2015

Money Market Seven Day Yield, Caption [Text]

rr_MoneyMarketSevenDayYieldCaption

To obtain the Fund's current 7-day yield information, please call the Transfer Agent toll-free at 1.800.CALL OPP (225.5677).

Performance Table Closing [Text Block]

rr_PerformanceTableClosingTextBlock

The Fund's performance reflects reinvestment of all dividends and capital gains distributions.

The total returns are not the Fund's current yield. The Fund's yield more closely reflects the Fund's current earnings. To obtain the Fund's current 7-day yield information, please call the Transfer Agent toll-free at 1.800.CALL OPP (225.5677).

Performance Information Illustrates Variability of Returns [Text]

rr_PerformanceInformationIllustratesVariabilityOfReturns

The bar chart and table below provide some indication of the risks of investing in the Fund by showing changes in the Fund's performance from calendar year to calendar year.

Maximum Sales Charge (Load) imposed on purchases (as % of offering price)

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

none

Management Fees

rr_ManagementFeesOverAssets

0.41%

Other Expenses Over Assets

rr_OtherExpensesOverAssets

0.12%

Fee Waiver and/or Expense Reimbursement

rr_FeeWaiverOrReimbursementOverAssets

(0.03%)

^[12]

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

$ 51

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

294

Annual Return 2006

rr_AnnualReturn2006

4.71%

Annual Return 2008

rr_AnnualReturn2008

2.78%

Annual Return 2010

rr_AnnualReturn2010

0.03%

Annual Return 2012

rr_AnnualReturn2012

0.01%

Annual Return 2014

rr_AnnualReturn2014

0.01%

Highest Quarterly Return, Label

rr_HighestQuarterlyReturnLabel

highest return before taxes for a calendar quarter was 1.25% (2nd Qtr 07)

Highest Quarterly Return, Date

rr_BarChartHighestQuarterlyReturnDate

Jun. 30, 2007

Lowest Quarterly Return

rr_BarChartLowestQuarterlyReturn

none

Inception Date

rr_AverageAnnualReturnInceptionDate

Apr. 03, 1985

5 Years

rr_AverageAnnualReturnYear05

0.01%

Objective, Primary [Text Block]

rr_ObjectivePrimaryTextBlock

Investment Objective. The Fund seeks capital appreciation.

Shareholder Fees Caption [Text]

rr_ShareholderFeesCaption

Shareholder Fees (fees paid directly from your investment)

Expense Example Narrative [Text Block]

rr_ExpenseExampleNarrativeTextBlock

Example. The following 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 a class of shares of the Fund for the time periods indicated. 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 expenses would be as follows, whether or not you redeemed your shares:

Portfolio Turnover, Rate

rr_PortfolioTurnoverRate

24.00%