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(Oppenheimer Global Allocation Fund)
  
Risk/Return: rr_RiskReturnAbstract  
Objective, Primary [Text Block] rr_ObjectivePrimaryTextBlock

Investment Objective. The Fund seeks total return.

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. You may qualify for sales charge discounts if you (or you and your spouse) invest, or agree to invest in the future, at least $25,000 in certain funds in the Oppenheimer family of funds. More information about these and other discounts is available from your financial professional and in the section "About Your Account" beginning on page 22 of the prospectus and in the sections "How to Buy Shares" beginning on page 68 and "Appendix A" in the Fund's Statement of Additional Information.
Expense Breakpoint Discounts [Text] rr_ExpenseBreakpointDiscounts You may qualify for sales charge discounts if you (or you and your spouse) invest, or agree to invest in the future, at least $25,000 in certain funds in the Oppenheimer family of funds.
Expense Breakpoint, Minimum Investment Required [Amount] rr_ExpenseBreakpointMinimumInvestmentRequiredAmount $ 25,000
Shareholder Fees Caption [Text] rr_ShareholderFeesCaption

Shareholder Fees (fees paid directly from your investment)

Operating Expenses Caption [Text] rr_OperatingExpensesCaption

Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value your investment)

 [1]
Expenses Restated to Reflect Current [Text] rr_ExpensesRestatedToReflectCurrent Expenses have been restated to reflect current fees.
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:
Expense Example by, Year, Caption [Text] rr_ExpenseExampleByYearCaption

If shares are redeemed

Expense Example, No Redemption, By Year, Caption [Text] rr_ExpenseExampleNoRedemptionByYearCaption

If shares are not redeemed

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 and may result in higher taxes when Fund shares are held in a taxable account. 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 37% of the average value of its portfolio.
Portfolio Turnover, Rate rr_PortfolioTurnoverRate 37.00%
Strategy Narrative [Text Block] rr_StrategyNarrativeTextBlock

Principal Investment Strategies. The Fund seeks to achieve its investment objective by allocating its assets among equity securities, fixed-income securities, and various other types of investments, from all over the world. The Fund will attempt to take advantage of long- and short-term fluctuations in the global markets by allocating its assets across a variety of asset classes. Such allocations may vary significantly from time to time. The Fund may invest in any market that the portfolio managers believe may offer an attractive investment opportunity. This investment flexibility is intended to allow the Fund to respond to, and seek to benefit from, changes in the global economic, political, and social landscape. The portfolio managers will analyze the overall investment opportunities and risks in the global markets and across asset classes in making investment decisions.

Generally, there are no geographic restrictions on where the Fund may invest and no restrictions on the amount of the Fund's assets that can be invested in either U.S. or foreign securities, including securities of issuers in developing and emerging markets. There is no maximum or minimum amount for investments in either equity or fixed-income securities. The Fund is not required to allocate its investments in any fixed proportion, and at any given time the Fund may allocate up to 100% of its assets in equity, fixed-income, U.S., or foreign securities.

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 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 may invest in debt securities of any kind and of varying duration and maturities. Examples include, but are 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, mortgage-backed or other asset-backed securities, inflation-indexed bonds, structured notes, loan assignments and loan participations.

The Fund may invest in below-investment-grade debt securities (commonly referred to as "junk bonds"), including distressed securities. Investment-grade debt securities are rated in one of the top four categories by nationally recognized statistical rating organizations such as Moody's or Standard & Poor's. The Fund may also invest in unrated securities, in which case the Fund's Sub-Adviser, OppenheimerFunds, Inc., 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.

The portfolio managers may seek to adjust exposures, enhance investment returns, and hedge market risks through the use of short sales and a variety of derivative instruments including, but not limited to, futures, options, forward contracts and swaps. The Fund may invest in the securities of other investment companies, subject to the limits of the Investment Company Act, including other entities sponsored and/or advised by the Manager or an affiliate. In addition, the Fund may invest in other types of investments including, but not limited to, commodity futures, event-linked securities, currency-related investments, real estate-related investments and precious metals-related investments.

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 Subsidiary is subject to the same investment restrictions and guidelines, and follows the same compliance policies and procedures, as the Fund. 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.

The Fund's holdings may at times differ significantly from the weightings of the indices comprising its reference index (the "Reference Index"). The Fund's Reference Index is a customized weighted index currently comprised of the following underlying broad-based security indices: 30% of the Russell 1000 Index, 30% of the MSCI All Country World Index (ex-U.S.), 20% of the Barclays Capital Aggregate Bond Index, and 20% of the Barclay's Multiverse Index (ex-U.S.). The Fund is not managed to be invested in the same percentages as those indices comprising the Reference Index.

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 more or less than what you paid for them. These risks mean that you can lose money by investing in the Fund.

Asset Allocation Risk. Because the Fund typically invests in a combination of securities, the Fund's ability to achieve its investment objective depends largely upon selecting the best mix of investments. There is the risk that the portfolio manager's evaluations and assumptions regarding market conditions may be incorrect. During periods of rapidly rising prices, the Fund might not achieve growth in its share prices to the same degree as funds focusing only on stocks. The Fund's investments in stocks may make it more difficult to preserve principal during periods of stock market volatility. The Fund's use of a particular investment style might not be successful when that style is out of favor and the Fund's performance may be adversely affected by the asset allocation decisions.

Market Risk. The value of the securities in which the Fund invests may be affected by changes in the securities markets. Securities markets may experience significant short-term volatility and may fall sharply at times. Different markets may behave differently from each other and U.S. markets may move in the opposite direction from one or more foreign markets.

Main Risks of Investing in Stock. 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. 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 and 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.

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 or group of industries.

Main Risks of Small- and Mid-Sized Companies. The stock prices of small- and mid-sized companies may be more volatile and their securities may be more difficult to sell than those of larger companies. They may not have established markets, may have fewer customers and product lines, may have unseasoned management or less management depth and may have more limited access to financial resources. Smaller companies may not pay dividends or provide capital gains for some time, if at all.

Main Risks of Debt Securities. Debt securities may be subject to credit risk, interest rate risk, duration risk, prepayment risk, reinvestment risk, extension risk and event risk. 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. 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. When interest rates fall, debt securities may be repaid more quickly than expected and the Fund may be required to reinvest the proceeds at a lower interest rate. This is referred to as "prepayment risk." 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. This is referred to as "reinvestment risk". When interest rates rise, debt securities may be repaid more slowly than expected and the value of the Fund's holdings may fall sharply. This is referred to as "extension risk." Interest rate changes normally have different effects on variable or floating rate securities than they do on securities with fixed interest rates. 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. 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.

Special 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, 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.

Fixed-Income Market Risks. 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 can 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.

Main Risks of Foreign Investing. Foreign securities are subject to special risks. 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 securities denominated in that foreign currency and in the value of any income or distributions the Fund may receive on those securities. 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. These risks may be greater for investments in developing or emerging market countries.

Special Risks of Developing and Emerging Markets. The economies of developing or emerging market countries may be more dependent on relatively few industries that may be highly vulnerable to local and global changes. The governments of developing and emerging market countries may also be more unstable than the governments of more developed countries and those countries are more likely to experience instability resulting from rapid changes or developments in social, political and economic conditions. These countries generally have less developed securities markets or exchanges, and less developed legal and accounting systems. Securities may be more difficult to sell at an acceptable price and may be more volatile than securities in countries with more mature markets. The value of developing or emerging market 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 and restrictions on withdrawing assets from the country. 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.

Main Risks of Alternative Asset Classes. The Fund's investments in asset classes that the portfolio managers expect to perform differently from its equity and fixed-income investments may be volatile or illiquid, particularly during periods of market instability, and they may not provide the expected returns.

Main Risks of Event-Linked Securities. Event-linked securities are fixed income securities for which the return of principal and payment of interest is contingent on the non-occurrence of a trigger event, such as a hurricane, earthquake, or other event that leads to physical or economic loss. If the trigger event occurs prior to maturity, the Fund may lose all or a portion of its principal and additional interest. Event-linked securities may expose the Fund to certain other risks, including issuer default, adverse regulatory or jurisdictional interpretations, liquidity risk and adverse tax consequences.

Main Risks of Derivative Investments. Derivatives may involve significant risks. Derivatives may be more volatile than other types of investments, require the payment of premiums, can 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 U.S. financial reform legislation, certain over-the-counter derivatives are (or soon will be) required to be executed on a regulated market and cleared through a central clearing house counterparty. It is unclear how these regulatory changes will affect counterparty risk, and entering into a derivative transaction with a central clearing house counterparty may entail further risks and costs.

Main Risks of Hedging. The Fund may engage in "hedging" strategies, including short sales, futures and other derivatives in an effort to protect assets from losses due to declines in the value of the Fund's portfolio. There are risks in the use of these investment and trading strategies. There can be no assurance that the hedging strategies used will be successful in avoiding losses, and hedged positions may perform less favorably in generally rising markets than unhedged positions. If the Sub-Adviser uses a hedging strategy at the wrong time or judges market conditions incorrectly, the strategy could reduce the Fund's return. In some cases, derivatives or other investments may be unavailable, or the Sub-Adviser may choose not to use them under market conditions when their use, in hindsight, may be determined to have been beneficial to the Fund. No assurance can be given that the Sub-Adviser will employ hedging strategies with respect to all or any portion of the Fund's assets.

Main 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.

Main 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.

Who is the Fund Designed For? The Fund is designed 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 with significant investments in foreign and domestic equity and fixed-income securities and alternative asset classes. 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. You should carefully consider your own investment goals and risk tolerance before investing.

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 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 more or less than what you paid for them. These risks mean that you can 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.
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 performance (for Class A shares) 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 and those of the Reference Index, which has characteristics of those markets in which the Fund can invest. The Fund's past investment performance (before and after taxes) 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: https://www.oppenheimerfunds.com/fund/GlobalAllocationFund
Bar Chart Does Not Reflect Sales Loads [Text] rr_BarChartDoesNotReflectSalesLoads Sales charges and taxes are not included and the returns would be lower if they were.
Bar Chart Closing [Text Block] rr_BarChartClosingTextBlock

Sales charges and taxes are not included and the returns would be lower if they were. During the period shown, the highest return for a calendar quarter was 19.00% (2nd Qtr 09) and the lowest return was -14.38% (4th Qtr 08). For the period from January 1, 2013 to December 31, 2013, the cumulative return before sales charges and taxes was 17.79%.
Performance Table Heading rr_PerformanceTableHeading

Average Annual Total Returns for the periods ended December 31, 2013
Performance Table Narrative rr_PerformanceTableNarrativeTextBlock

The following table shows the average annual total returns for each class of the Fund's shares. After-tax returns are calculated using the highest individual federal marginal income tax rates and do not reflect the impact of state or local taxes. Your actual after-tax returns, depending on your individual tax situation, may differ from those shown and after-tax returns shown are not relevant to investors who hold their Fund shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts. After-tax returns are shown for only one class and after-tax returns for other classes will vary.
Performance Table Uses Highest Federal Rate rr_PerformanceTableUsesHighestFederalRate After-tax returns are calculated using the highest individual federal marginal income tax rates and do not reflect the impact of state or local taxes.
Performance Table Not Relevant to Tax Deferred rr_PerformanceTableNotRelevantToTaxDeferred Your actual after-tax returns, depending on your individual tax situation, may differ from those shown and after-tax returns shown are not relevant to investors who hold their Fund shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts.
Performance Past Does Not Indicate Future [Text] rr_PerformancePastDoesNotIndicateFuture The Fund's past investment performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future.
Performance Table One Class of after Tax Shown [Text] rr_PerformanceTableOneClassOfAfterTaxShown After-tax returns are shown for only one class and after-tax returns for other classes will vary.
Performance Availability Website Address [Text] rr_PerformanceAvailabilityWebSiteAddress https//:www.oppenheimerfunds.com/fund/GlobalAllocationFund
(Oppenheimer Global Allocation Fund) | S&P 500 Index
  
Risk/Return: rr_RiskReturnAbstract  
1 Year rr_AverageAnnualReturnYear01 32.39%
5 Years (or life of class, if less) rr_AverageAnnualReturnYear05 17.94%
10 Years (or life of class, if less) rr_AverageAnnualReturnYear10 7.41%
(Oppenheimer Global Allocation Fund) | S&P 500 Index (reflects no deduction for fees, expenses or taxes)
  
Risk/Return: rr_RiskReturnAbstract  
5 Years (or life of class, if less) rr_AverageAnnualReturnYear05 20.23% [2]
(Oppenheimer Global Allocation Fund) | Reference Index
  
Risk/Return: rr_RiskReturnAbstract  
1 Year rr_AverageAnnualReturnYear01 12.81%
5 Years (or life of class, if less) rr_AverageAnnualReturnYear05 11.72%
10 Years (or life of class, if less) rr_AverageAnnualReturnYear10 5.55%
(Oppenheimer Global Allocation Fund) | Reference Index (reflects no deduction for fees, expenses or taxes)
  
Risk/Return: rr_RiskReturnAbstract  
5 Years (or life of class, if less) rr_AverageAnnualReturnYear05 9.22% [2]
(Oppenheimer Global Allocation Fund) | Russell 1000 Index
  
Risk/Return: rr_RiskReturnAbstract  
1 Year rr_AverageAnnualReturnYear01 33.11%
5 Years (or life of class, if less) rr_AverageAnnualReturnYear05 18.59%
10 Years (or life of class, if less) rr_AverageAnnualReturnYear10 7.78%
(Oppenheimer Global Allocation Fund) | Russell 1000 Index (reflects no deduction for fees, expenses or taxes)
  
Risk/Return: rr_RiskReturnAbstract  
5 Years (or life of class, if less) rr_AverageAnnualReturnYear05 20.53% [2]
(Oppenheimer Global Allocation Fund) | MSCI All Country World Index (ex-U.S.)
  
Risk/Return: rr_RiskReturnAbstract  
1 Year rr_AverageAnnualReturnYear01 15.29%
5 Years (or life of class, if less) rr_AverageAnnualReturnYear05 12.81%
10 Years (or life of class, if less) rr_AverageAnnualReturnYear10 7.57%
(Oppenheimer Global Allocation Fund) | MSCI All Country World Index (ex-U.S.) (reflects no deduction for fees, expenses or taxes)
  
Risk/Return: rr_RiskReturnAbstract  
5 Years (or life of class, if less) rr_AverageAnnualReturnYear05 10.23% [2]
(Oppenheimer Global Allocation Fund) | Barclays Aggregate Bond Index
  
Risk/Return: rr_RiskReturnAbstract  
1 Year rr_AverageAnnualReturnYear01 (2.02%)
5 Years (or life of class, if less) rr_AverageAnnualReturnYear05 4.44%
10 Years (or life of class, if less) rr_AverageAnnualReturnYear10 4.55%
(Oppenheimer Global Allocation Fund) | Barclays Aggregate Bond Index (reflects no deduction for fees, expenses or taxes)
  
Risk/Return: rr_RiskReturnAbstract  
5 Years (or life of class, if less) rr_AverageAnnualReturnYear05 0.63% [2]
(Oppenheimer Global Allocation Fund) | Barclays Multiverse Index (ex-U.S.)
  
Risk/Return: rr_RiskReturnAbstract  
1 Year rr_AverageAnnualReturnYear01 (2.82%)
5 Years (or life of class, if less) rr_AverageAnnualReturnYear05 3.68%
10 Years (or life of class, if less) rr_AverageAnnualReturnYear10 4.43%
(Oppenheimer Global Allocation Fund) | Barclays Multiverse Index (ex-U.S.) (reflects no deduction for fees, expenses or taxes)
  
Risk/Return: rr_RiskReturnAbstract  
5 Years (or life of class, if less) rr_AverageAnnualReturnYear05 (0.40%) [2]
(Oppenheimer Global Allocation Fund) | Class A
  
Risk/Return: rr_RiskReturnAbstract  
Maximum Sales Charge (Load) imposed on purchases (as % of offering price) rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice 5.75%
Maximum Deferred Sales Charge (Load) (as % of the lower of original offering price or redemption proceeds) rr_MaximumDeferredSalesChargeOverOther none
Management Fees rr_ManagementFeesOverAssets 0.79% [3]
Distribution and/or Service (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets 0.24%
Other Expenses of the Fund rr_Component1OtherExpensesOverAssets 0.24%
Other Expenses of the Subsidiary rr_Component2OtherExpensesOverAssets none
Acquired Fund Fees and Expenses rr_AcquiredFundFeesAndExpensesOverAssets 0.08%
Total Annual Fund Operating Expenses rr_ExpensesOverAssets 1.35%
Fee Waiver and/or Expense Reimbursement rr_FeeWaiverOrReimbursementOverAssets (0.08%) [4]
Total Annual Fund Operating Expenses After Fee Waiver and/or Expense Reimbursement rr_NetExpensesOverAssets 1.27%
Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 698
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 973
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 1,269
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 2,109
Expense Example, No Redemption, 1 Year rr_ExpenseExampleNoRedemptionYear01 698
Expense Example, No Redemption, 3 Years rr_ExpenseExampleNoRedemptionYear03 973
Expense Example, No Redemption, 5 Years rr_ExpenseExampleNoRedemptionYear05 1,269
Expense Example, No Redemption, 10 Years rr_ExpenseExampleNoRedemptionYear10 2,109
Annual Return 2004 rr_AnnualReturn2004 10.29%
Annual Return 2005 rr_AnnualReturn2005 2.76%
Annual Return 2006 rr_AnnualReturn2006 10.66%
Annual Return 2007 rr_AnnualReturn2007 (3.88%)
Annual Return 2008 rr_AnnualReturn2008 (31.64%)
Annual Return 2009 rr_AnnualReturn2009 32.72%
Annual Return 2010 rr_AnnualReturn2010 13.42%
Annual Return 2011 rr_AnnualReturn2011 (7.77%)
Annual Return 2012 rr_AnnualReturn2012 10.17%
Annual Return 2013 rr_AnnualReturn2013 17.79%
Year to Date Return, Label rr_YearToDateReturnLabel For the period from January 1, 2013 to December 31, 2013, the cumulative return before sales charges and taxes was 17.79%
Bar Chart, Year to Date Return rr_BarChartYearToDateReturn 17.79%
Bar Chart, Year to Date Return, Date rr_BarChartYearToDateReturnDate Dec. 31, 2013
Highest Quarterly Return, Label rr_HighestQuarterlyReturnLabel highest return for a calendar quarter was 19.00% (2nd Qtr 09)
Highest Quarterly Return rr_BarChartHighestQuarterlyReturn 19.00%
Highest Quarterly Return, Date rr_BarChartHighestQuarterlyReturnDate Jun. 30, 2009
Lowest Quarterly Return, Label rr_LowestQuarterlyReturnLabel lowest return was -14.38% (4th Qtr 08)
Lowest Quarterly Return rr_BarChartLowestQuarterlyReturn (14.38%)
Lowest Quarterly Return, Date rr_BarChartLowestQuarterlyReturnDate Dec. 31, 2008
1 Year rr_AverageAnnualReturnYear01 11.02%
5 Years (or life of class, if less) rr_AverageAnnualReturnYear05 11.17%
10 Years (or life of class, if less) rr_AverageAnnualReturnYear10 3.42%
Inception Date rr_AverageAnnualReturnInceptionDate Nov. 01, 1991
(Oppenheimer Global Allocation Fund) | Class A | Return After Taxes on Distributions
  
Risk/Return: rr_RiskReturnAbstract  
1 Year rr_AverageAnnualReturnYear01 10.03%
5 Years (or life of class, if less) rr_AverageAnnualReturnYear05 10.69%
10 Years (or life of class, if less) rr_AverageAnnualReturnYear10 2.60%
(Oppenheimer Global Allocation Fund) | Class A | Return After Taxes on Distributions and Sale of Fund Shares
  
Risk/Return: rr_RiskReturnAbstract  
1 Year rr_AverageAnnualReturnYear01 6.21%
5 Years (or life of class, if less) rr_AverageAnnualReturnYear05 8.80%
10 Years (or life of class, if less) rr_AverageAnnualReturnYear10 2.55%
(Oppenheimer Global Allocation Fund) | Class B
  
Risk/Return: rr_RiskReturnAbstract  
Maximum Sales Charge (Load) imposed on purchases (as % of offering price) rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice none
Maximum Deferred Sales Charge (Load) (as % of the lower of original offering price or redemption proceeds) rr_MaximumDeferredSalesChargeOverOther 5.00%
Management Fees rr_ManagementFeesOverAssets 0.79% [3]
Distribution and/or Service (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets 1.00%
Other Expenses of the Fund rr_Component1OtherExpensesOverAssets 0.24%
Other Expenses of the Subsidiary rr_Component2OtherExpensesOverAssets none
Acquired Fund Fees and Expenses rr_AcquiredFundFeesAndExpensesOverAssets 0.08%
Total Annual Fund Operating Expenses rr_ExpensesOverAssets 2.11%
Fee Waiver and/or Expense Reimbursement rr_FeeWaiverOrReimbursementOverAssets (0.08%) [4]
Total Annual Fund Operating Expenses After Fee Waiver and/or Expense Reimbursement rr_NetExpensesOverAssets 2.03%
Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 708
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 960
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 1,338
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 2,082
Expense Example, No Redemption, 1 Year rr_ExpenseExampleNoRedemptionYear01 208
Expense Example, No Redemption, 3 Years rr_ExpenseExampleNoRedemptionYear03 660
Expense Example, No Redemption, 5 Years rr_ExpenseExampleNoRedemptionYear05 1,138
Expense Example, No Redemption, 10 Years rr_ExpenseExampleNoRedemptionYear10 2,082
1 Year rr_AverageAnnualReturnYear01 11.82%
5 Years (or life of class, if less) rr_AverageAnnualReturnYear05 11.29%
10 Years (or life of class, if less) rr_AverageAnnualReturnYear10 3.55%
Inception Date rr_AverageAnnualReturnInceptionDate Sep. 01, 1993
(Oppenheimer Global Allocation Fund) | Class C
  
Risk/Return: rr_RiskReturnAbstract  
Maximum Sales Charge (Load) imposed on purchases (as % of offering price) rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice none
Maximum Deferred Sales Charge (Load) (as % of the lower of original offering price or redemption proceeds) rr_MaximumDeferredSalesChargeOverOther 1.00%
Management Fees rr_ManagementFeesOverAssets 0.79% [3]
Distribution and/or Service (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets 0.99%
Other Expenses of the Fund rr_Component1OtherExpensesOverAssets 0.24%
Other Expenses of the Subsidiary rr_Component2OtherExpensesOverAssets none
Acquired Fund Fees and Expenses rr_AcquiredFundFeesAndExpensesOverAssets 0.08%
Total Annual Fund Operating Expenses rr_ExpensesOverAssets 2.10%
Fee Waiver and/or Expense Reimbursement rr_FeeWaiverOrReimbursementOverAssets (0.08%) [4]
Total Annual Fund Operating Expenses After Fee Waiver and/or Expense Reimbursement rr_NetExpensesOverAssets 2.02%
Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 307
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 657
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 1,133
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 2,450
Expense Example, No Redemption, 1 Year rr_ExpenseExampleNoRedemptionYear01 207
Expense Example, No Redemption, 3 Years rr_ExpenseExampleNoRedemptionYear03 657
Expense Example, No Redemption, 5 Years rr_ExpenseExampleNoRedemptionYear05 1,133
Expense Example, No Redemption, 10 Years rr_ExpenseExampleNoRedemptionYear10 2,450
1 Year rr_AverageAnnualReturnYear01 16.01%
5 Years (or life of class, if less) rr_AverageAnnualReturnYear05 11.70%
10 Years (or life of class, if less) rr_AverageAnnualReturnYear10 3.28%
Inception Date rr_AverageAnnualReturnInceptionDate Sep. 01, 1993
(Oppenheimer Global Allocation Fund) | Class N
  
Risk/Return: rr_RiskReturnAbstract  
Maximum Sales Charge (Load) imposed on purchases (as % of offering price) rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice none
Maximum Deferred Sales Charge (Load) (as % of the lower of original offering price or redemption proceeds) rr_MaximumDeferredSalesChargeOverOther 1.00%
Management Fees rr_ManagementFeesOverAssets 0.79% [3]
Distribution and/or Service (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets 0.50%
Other Expenses of the Fund rr_Component1OtherExpensesOverAssets 0.24%
Other Expenses of the Subsidiary rr_Component2OtherExpensesOverAssets none
Acquired Fund Fees and Expenses rr_AcquiredFundFeesAndExpensesOverAssets 0.08%
Total Annual Fund Operating Expenses rr_ExpensesOverAssets 1.61%
Fee Waiver and/or Expense Reimbursement rr_FeeWaiverOrReimbursementOverAssets (0.08%) [4]
Total Annual Fund Operating Expenses After Fee Waiver and/or Expense Reimbursement rr_NetExpensesOverAssets 1.53%
Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 257
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 504
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 875
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 1,919
Expense Example, No Redemption, 1 Year rr_ExpenseExampleNoRedemptionYear01 157
Expense Example, No Redemption, 3 Years rr_ExpenseExampleNoRedemptionYear03 504
Expense Example, No Redemption, 5 Years rr_ExpenseExampleNoRedemptionYear05 875
Expense Example, No Redemption, 10 Years rr_ExpenseExampleNoRedemptionYear10 1,919
1 Year rr_AverageAnnualReturnYear01 16.49%
5 Years (or life of class, if less) rr_AverageAnnualReturnYear05 12.22%
10 Years (or life of class, if less) rr_AverageAnnualReturnYear10 3.75%
Inception Date rr_AverageAnnualReturnInceptionDate Mar. 01, 2001
(Oppenheimer Global Allocation Fund) | Class Y
  
Risk/Return: rr_RiskReturnAbstract  
Maximum Sales Charge (Load) imposed on purchases (as % of offering price) rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice none
Maximum Deferred Sales Charge (Load) (as % of the lower of original offering price or redemption proceeds) rr_MaximumDeferredSalesChargeOverOther none
Management Fees rr_ManagementFeesOverAssets 0.79% [3]
Distribution and/or Service (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets none
Other Expenses of the Fund rr_Component1OtherExpensesOverAssets 0.24%
Other Expenses of the Subsidiary rr_Component2OtherExpensesOverAssets none
Acquired Fund Fees and Expenses rr_AcquiredFundFeesAndExpensesOverAssets 0.08%
Total Annual Fund Operating Expenses rr_ExpensesOverAssets 1.11%
Fee Waiver and/or Expense Reimbursement rr_FeeWaiverOrReimbursementOverAssets (0.08%) [4]
Total Annual Fund Operating Expenses After Fee Waiver and/or Expense Reimbursement rr_NetExpensesOverAssets 1.03%
Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 106
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 347
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 607
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 1,352
Expense Example, No Redemption, 1 Year rr_ExpenseExampleNoRedemptionYear01 106
Expense Example, No Redemption, 3 Years rr_ExpenseExampleNoRedemptionYear03 347
Expense Example, No Redemption, 5 Years rr_ExpenseExampleNoRedemptionYear05 607
Expense Example, No Redemption, 10 Years rr_ExpenseExampleNoRedemptionYear10 1,352
1 Year rr_AverageAnnualReturnYear01 18.25%
5 Years (or life of class, if less) rr_AverageAnnualReturnYear05 12.91%
10 Years (or life of class, if less) rr_AverageAnnualReturnYear10 4.40%
Inception Date rr_AverageAnnualReturnInceptionDate May 01, 2000
(Oppenheimer Global Allocation Fund) | Class I
  
Risk/Return: rr_RiskReturnAbstract  
Maximum Sales Charge (Load) imposed on purchases (as % of offering price) rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice none
Maximum Deferred Sales Charge (Load) (as % of the lower of original offering price or redemption proceeds) rr_MaximumDeferredSalesChargeOverOther none
Management Fees rr_ManagementFeesOverAssets 0.79% [3]
Distribution and/or Service (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets none
Other Expenses of the Fund rr_Component1OtherExpensesOverAssets 0.05%
Other Expenses of the Subsidiary rr_Component2OtherExpensesOverAssets none
Acquired Fund Fees and Expenses rr_AcquiredFundFeesAndExpensesOverAssets 0.08%
Total Annual Fund Operating Expenses rr_ExpensesOverAssets 0.92%
Fee Waiver and/or Expense Reimbursement rr_FeeWaiverOrReimbursementOverAssets (0.08%) [4]
Total Annual Fund Operating Expenses After Fee Waiver and/or Expense Reimbursement rr_NetExpensesOverAssets 0.84%
Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 86
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 287
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 504
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 1,129
Expense Example, No Redemption, 1 Year rr_ExpenseExampleNoRedemptionYear01 86
Expense Example, No Redemption, 3 Years rr_ExpenseExampleNoRedemptionYear03 287
Expense Example, No Redemption, 5 Years rr_ExpenseExampleNoRedemptionYear05 504
Expense Example, No Redemption, 10 Years rr_ExpenseExampleNoRedemptionYear10 1,129
1 Year rr_AverageAnnualReturnYear01 18.33%
5 Years (or life of class, if less) rr_AverageAnnualReturnYear05 10.86%
10 Years (or life of class, if less) rr_AverageAnnualReturnYear10   
Inception Date rr_AverageAnnualReturnInceptionDate Feb. 28, 2012
(Oppenheimer Flexible Strategies Fund)
  
Risk/Return: rr_RiskReturnAbstract  
Objective, Primary [Text Block] rr_ObjectivePrimaryTextBlock

Investment Objective. The Fund seeks total return.
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. You may qualify for sales charge discounts if you (or you and your spouse) invest, or agree to invest in the future, at least $25,000 in certain funds in the Oppenheimer family of funds. More information about these and other discounts is available from your financial professional and in the section "About Your Account" beginning on page 22 of the prospectus and in the sections "How to Buy Shares" beginning on page 71 and "Appendix A" in the Fund's Statement of Additional Information.
Expense Breakpoint Discounts [Text] rr_ExpenseBreakpointDiscounts You may qualify for sales charge discounts if you (or you and your spouse) invest, or agree to invest in the future, at least $25,000 in certain funds in the Oppenheimer family of funds.
Expense Breakpoint, Minimum Investment Required [Amount] rr_ExpenseBreakpointMinimumInvestmentRequiredAmount 25,000
Shareholder Fees Caption [Text] rr_ShareholderFeesCaption

Shareholder Fees (fees paid directly from your investment)

Operating Expenses Caption [Text] rr_OperatingExpensesCaption

Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value your investment)

 [1]
Expenses Restated to Reflect Current [Text] rr_ExpensesRestatedToReflectCurrent Expenses have been restated to reflect current fees.
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:
Expense Example by, Year, Caption [Text] rr_ExpenseExampleByYearCaption

If shares are redeemed

Expense Example, No Redemption, By Year, Caption [Text] rr_ExpenseExampleNoRedemptionByYearCaption

If shares are not redeemed

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 and may result in higher taxes when Fund shares are held in a taxable account. 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 76% of the average value of its portfolio.
Portfolio Turnover, Rate rr_PortfolioTurnoverRate 76.00%
Strategy Narrative [Text Block] rr_StrategyNarrativeTextBlock

Principal Investment Strategies. The Fund's sub-adviser, OppenheimerFunds, Inc. (the "Sub-Adviser"), exercises a flexible strategy in selecting its investments. The flexibility of the Fund's overall strategy derives from its use of multiple alternative investment strategies to build a portfolio that seeks total return over the long term by investing in instruments believed to have strong risk-adjusted return potential across asset classes. These multiple alternative investment strategies are currently organized into four distinct strategies, described below, with the allocation based on the portfolio manager's view of the attractiveness of the various strategies, as well as their risks to the Fund, at any given point in time. The Fund's long and short exposure within each of the strategies may change depending on the portfolio manager's view of the opportunities available. The Fund will limit its total short sale positions to no more than 40% of its net assets.

  • Equity Hedge. The Equity Hedge strategy can include long and short positions in equities, equity-sensitive convertibles and derivatives including options, futures, swaps, and structured notes.

  • Long/Short Credit. The Long/Short Credit strategy can include long and short positions in a variety of fixed-income securities including loans, asset-backed securities, event-linked bonds (also referred to as catastrophe bonds), credit-sensitive convertibles, high-grade, high-yield and distressed credit, sovereign debt, and derivatives, including options, futures, swaps, and structured notes.

  • Global Macro. The Global Macro strategy can include long and short positions that provide exposure to interest rates, credit spreads, sovereign debt, currencies, commodities, volatility, equities and equity indices, and derivatives, including options, futures, swaps, and structured notes.

  • Relative Value. The Relative Value strategy can include long and short positions in multiple asset classes including equities, fixed income, derivatives or other types of securities.

The Fund's overall long or short positioning can vary based on market conditions, and the Fund may take both long and short positions simultaneously.

To implement the multiple strategies described above, the Fund may hold long and short positions in a variety of instruments, which include:

  • Equity Securities. The Fund may invest in common stocks of U.S. and foreign companies. Equity investments are not limited by the issuer's location, size, market capitalization or industry sector.

  • Fixed Income Securities. The Fund may invest in fixed-income securities, including bonds and notes or other debt securities issued by U.S. and foreign companies and governments, money market instruments, corporate bonds, and convertible bonds. The Fund can invest in investment-grade or below-investment-grade, high-yield debt securities (commonly referred to as "junk bonds"). The Fund may invest without limit in securities that are rated below-investment-grade and at times may invest substantial amounts of its assets in those securities to seek higher income as part of its investment goal. Investment-grade debt securities are rated in one of the top four rating categories by nationally recognized statistical rating organizations such as Moody's Investors Service or Standard & Poor's. The Fund may also invest in unrated securities, in which case the Fund's 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. The Fund may also invest in other fixed income securities, including event-linked bonds, asset-backed securities, mortgage-backed securities, participation interests in loans, and pooled investment entities that invest in loans. The Fund may also invest in floating rate loans (sometimes referred to as "adjustable rate loans") that 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 other obligations of a borrower in the event of liquidation. These investments are referred to as "Senior Loans." Senior 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.

  • Derivatives and Other Assets. The Fund may invest in derivative instruments and other assets, including options, futures, forward contracts, swaps (including on equity and fixed-income securities and indices, commodities, interest rates, currencies and volatility), "structured" notes, mortgage-related securities, equity-linked debt securities, commodity-linked derivatives, and currency derivatives.

The Fund may invest a substantial portion of its assets in foreign securities, including companies in developed and emerging market countries, and has no limit on the amount it can invest in such securities.

With respect to the Equity Hedge and Long/Short Credit strategies, the portfolio manager generally selects securities based upon a fundamentally-driven bottom-up analysis of the underlying companies, industries and indices, along with a top-down macroeconomic overlay. The portfolio manager looks for potential change that does not appear to be broadly understood by the markets. With respect to the Global Macro strategy, the portfolio manager generally selects securities and asset classes based on a top-down analysis of macroeconomic variables and the expected impact on the securities and asset classes the Fund may invest in. With respect to the Relative Value strategy, the portfolio manager generally seeks to take advantage of valuation discrepancies that exist between specific securities.

In determining the Fund's allocation across the four strategies, the portfolio manager typically looks for opportunities across strategies and asset classes and attempts to allocate in a way that generally provides strong risk-adjusted return potential and that takes into consideration the allocation of the risk in the portfolio. The portfolio manager conducts fundamental evaluations of market, economic, industry and company-specific factors that do not appear to be reflected in pricing of the underlying securities and asset classes. In response to changing market, economic, company and industry-specific conditions and/or valuations and risk allocation fluctuations, the portfolio manager may change the Fund's allocation to a particular strategy, and may also implement new strategies or reduce the Fund's allocation to any strategy to zero. The short positions in each of the four strategies currently employed can be obtained through short sales of securities, or through entering into a short position in a derivative. Such short positions can be held for various purposes, including to seek to increase investment returns, to hedge the Fund's overall portfolio, and to hedge a specific position held by the Fund.

The above criteria may vary in particular cases and may change over time. The Fund may sell securities that the portfolio manager believes no longer meet these criteria but is not required to do so.

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 manager's 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 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 more or less than what you paid for them. These risks mean that you can lose money by investing in the Fund.

Management Risk. The investment strategies, techniques and risk analyses that may be employed by the Sub-Adviser may not produce the desired results. The Sub-Adviser may be incorrect in its assessment of the value of securities or assessment of market or interest rate trends, which can result in losses to the Fund.

Main Risks of Investing in Stock. 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. 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 and 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.

Main Risks of Debt Securities. Debt securities may be subject to credit risk, interest rate risk, duration risk, prepayment risk, reinvestment risk, extension risk and event risk. 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. 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. When interest rates fall, debt securities may be repaid more quickly than expected and the Fund may be required to reinvest the proceeds at a lower interest rate. This is referred to as "prepayment risk." 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. This is referred to as "reinvestment risk". When interest rates rise, debt securities may be repaid more slowly than expected and the value of the Fund's holdings may fall sharply. This is referred to as "extension risk." Interest rate changes normally have different effects on variable or floating rate securities than they do on securities with fixed interest rates. 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. 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.

Special 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, 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.

Special 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.

Main Risks of Event-Linked Securities. Event-linked securities are fixed income securities for which the return of principal and payment of interest is contingent on the non-occurrence of a trigger event, such as a hurricane, earthquake, or other event that leads to physical or economic loss. If the trigger event occurs prior to maturity, the Fund may lose all or a portion of its principal and additional interest. Event-linked securities may expose the Fund to certain other risks, including issuer default, adverse regulatory or jurisdictional interpretations, liquidity risk and adverse tax consequences.

Special Risks of Senior Loans. 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. Senior Loans usually have mandatory and optional prepayment provisions. If a borrower prepays a Senior Loan, the Fund will have to reinvest the proceeds in other Senior Loans or securities that may pay lower interest rates.

Senior 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, any collateral may be found invalid or 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 Senior 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 Senior Loans including, for example, the lack of publicly-available information, some Senior Loans are not as easily purchased or sold as publicly-traded securities. Some Senior Loans and other Fund investments 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. Direct investments in Senior Loans and, to a lesser degree, investments in participation interests in or assignments of Senior Loans may be limited. Investments in Senior Loans are expected to be less affected by changes in interest rates than fixed-rate securities.

Main 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.

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.

Main Risks of Money Market Instruments. The Fund may invest in money market instruments. Money market instruments are short-term, US dollar-denominated debt instruments issued or guaranteed by domestic and foreign corporations and financial institutions, the U.S. government, its agencies and instrumentalities and other entities. Money market instruments include certificates of deposit, commercial paper, repurchase agreements, treasury bills and other short term debt obligations that have a final maturity, as defined under rules under the Investment Company Act, of 397 days or less. They may have fixed, variable or floating interest rates. Money market instruments are subject to certain risks, including the risk 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.

Fixed-Income Market Risks. 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 can 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.

Main Risks of Long/Short Holdings. Under certain conditions, even if the value of the Fund's long positions are rising, this could be offset by declining values of the Fund's short positions. Conversely, it is possible that rising values of the Fund's short positions could be offset by declining values of the Fund's long positions. In either scenario the Fund may experience losses. In a market where the value of both the Fund's long and short positions are declining, the Fund may experience substantial losses.

Main Risks of Short Sales. The Fund will incur a loss as a result of a short sale if the price of the security sold short increases between the date of the short sale and the date on which the Fund closes the short position. A short sale of a security creates the risk of an unlimited loss, since the price of the security sold short could theoretically increase without limit. Purchasing securities previously sold short to close out a short position can itself cause the price of the securities to rise further, thereby increasing the loss. Further, there is no assurance that a security the Fund needs to buy to cover a short position will be available for purchase at a reasonable price. Short sales may cause a higher portfolio turnover rate and increase the Fund's brokerage and other transaction expenses. Short selling is considered a speculative investment practice.

The Fund will limit the market value of its total short sale positions to not more than 40% of its net assets at the time a short sale is entered into.

Asset Allocation Risk. Because the Fund typically invests in a combination of securities, the Fund's ability to achieve its investment objective depends largely upon selecting the best mix of investments. There is the risk that the portfolio manager's evaluations and assumptions regarding market conditions may be incorrect. During periods of rapidly rising prices, the Fund might not achieve growth in its share prices to the same degree as funds focusing only on stocks. The Fund's investments in stocks may make it more difficult to preserve principal during periods of stock market volatility. The Fund's use of a particular investment style might not be successful when that style is out of favor and the Fund's performance may be adversely affected by the asset allocation decisions.

Main Risks of Value Investing. Value investing entails the risk that if the market does not recognize that the 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 the 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.

Main Risks of Foreign Investing. Foreign securities are subject to special risks. 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 securities denominated in that foreign currency and in the value of any income or distributions the Fund may receive on those securities. 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. These risks may be greater for investments in developing or emerging market countries.

Special Risks of Developing and Emerging Markets. The economies of developing or emerging market countries may be more dependent on relatively few industries that may be highly vulnerable to local and global changes. The governments of developing and emerging market countries may also be more unstable than the governments of more developed countries and those countries are more likely to experience instability resulting from rapid changes or developments in social, political and economic conditions. These countries generally have less developed securities markets or exchanges, and less developed legal and accounting systems. Securities may be more difficult to sell at an acceptable price and may be more volatile than securities in countries with more mature markets. The value of developing or emerging market 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 and restrictions on withdrawing assets from the country. Investments in securities of issuers in developing or emerging market countries may be considered speculative.

Main Risks of Small- and Mid-Sized Companies. The stock prices of small- and mid-sized companies may be more volatile and their securities may be more difficult to sell than those of larger companies. They may not have established markets, may have fewer customers and product lines, may have unseasoned management or less management depth and may have more limited access to financial resources. Smaller companies may not pay dividends or provide capital gains for some time, if at all.

Main Risks of Derivative Investments. Derivatives may involve significant risks. Derivatives may be more volatile than other types of investments, require the payment of premiums, can 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 U.S. financial reform legislation, certain over-the-counter derivatives are (or soon will be) required to be executed on a regulated market and cleared through a central clearing house counterparty. It is unclear how these regulatory changes will affect counterparty risk, and entering into a derivative transaction with a central clearing house counterparty may entail further risks and costs.

Main Risks of Hedging. The Fund may engage in "hedging" strategies, including short sales, futures and other derivatives in an effort to protect assets from losses due to declines in the value of the Fund's portfolio. There are risks in the use of these investment and trading strategies. There can be no assurance that the hedging strategies used will be successful in avoiding losses, and hedged positions may perform less favorably in generally rising markets than unhedged positions. If the Sub-Adviser uses a hedging strategy at the wrong time or judges market conditions incorrectly, the strategy could reduce the Fund's return. In some cases, derivatives or other investments may be unavailable, or the Sub-Adviser may choose not to use them under market conditions when their use, in hindsight, may be determined to have been beneficial to the Fund. No assurance can be given that the Sub-Adviser will employ hedging strategies with respect to all or any portion of the Fund's assets.

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 or group of industries.

Main 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.

Main 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.

Currently, the Internal Revenue Service has suspended the granting of private letter rulings confirming that income from the Fund's investment in the Subsidiary constitutes "qualifying income" for purposes of the tax rules, pending further internal discussion. As a result, there is a risk that the Internal Revenue Service could assert that the annual net profit realized by the Subsidiary and imputed for income tax purposes to the Fund will not be considered "qualifying income" for purposes of the Fund remaining qualified as a regulated investment company for federal income tax purposes.

Who is the Fund Designed For? The Fund is designed for investors seeking total return over the long term through multiple alternative strategies with a combination of long and short exposure that varies over time. Those investors should be willing to assume the risks of short-term share price fluctuations and losses that are typical for a fund emphasizing multiple alternative investment strategies using equity, debt and foreign securities, as well as derivative instruments and other assets. Since the Fund does not seek current income, 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 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 more or less than what you paid for them. These risks mean that you can 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.
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 performance (for Class A Shares) 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. The Fund's past investment performance (before and after taxes) 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: https://www.oppenheimerfunds.com/fund/FlexibleStrategiesFund
Bar Chart Does Not Reflect Sales Loads [Text] rr_BarChartDoesNotReflectSalesLoads Sales charges and taxes are not included and the returns would be lower if they were.
Bar Chart Closing [Text Block] rr_BarChartClosingTextBlock

Sales charges and taxes are not included and the returns would be lower if they were. During the period shown, the highest return for a calendar quarter was 7.77% (2nd Qtr 09) and the lowest return was -13.56% (4th Qtr 08). For the period from January 1, 2013 to December 31, 2013 the cumulative return before sales charges and taxes was 9.00%.
Performance Table Heading rr_PerformanceTableHeading

Average Annual Total Returns for the periods ended December 31, 2013
Performance Table Narrative rr_PerformanceTableNarrativeTextBlock

The following table shows the average annual total returns for each class of the Fund's shares. After-tax returns are calculated using the highest individual federal marginal income tax rates and do not reflect the impact of state or local taxes. Your actual after-tax returns, depending on your individual tax situation, may differ from those shown and after-tax returns shown are not relevant to investors who hold their Fund shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts. After-tax returns are shown for only one class and after-tax returns for other classes will vary.

Performance information for Class I shares will be provided after those shares have one full calendar year of performance.

Performance Table Uses Highest Federal Rate rr_PerformanceTableUsesHighestFederalRate After-tax returns are calculated using the highest individual federal marginal income tax rates and do not reflect the impact of state or local taxes.
Performance Table Not Relevant to Tax Deferred rr_PerformanceTableNotRelevantToTaxDeferred Your actual after-tax returns, depending on your individual tax situation, may differ from those shown and after-tax returns shown are not relevant to investors who hold their Fund shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts.
Performance Past Does Not Indicate Future [Text] rr_PerformancePastDoesNotIndicateFuture The Fund's past investment performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future.
Performance Table One Class of after Tax Shown [Text] rr_PerformanceTableOneClassOfAfterTaxShown After-tax returns are shown for only one class and after-tax returns for other classes will vary.
Performance Availability Website Address [Text] rr_PerformanceAvailabilityWebSiteAddress https://www.oppenheimerfunds.com/fund/FlexibleStrategiesFund
(Oppenheimer Flexible Strategies Fund) | S&P 500 Index
  
Risk/Return: rr_RiskReturnAbstract  
1 Year rr_AverageAnnualReturnYear01 32.39%
5 Years (or life of class, if less) rr_AverageAnnualReturnYear05 17.94%
10 Years (or life of class, if less) rr_AverageAnnualReturnYear10 7.41%
(Oppenheimer Flexible Strategies Fund) | HFRI Fund Weighted Composite Index
  
Risk/Return: rr_RiskReturnAbstract  
1 Year rr_AverageAnnualReturnYear01 9.24%
5 Years (or life of class, if less) rr_AverageAnnualReturnYear05 7.80%
10 Years (or life of class, if less) rr_AverageAnnualReturnYear10 5.72%
(Oppenheimer Flexible Strategies Fund) | Class A
  
Risk/Return: rr_RiskReturnAbstract  
Maximum Sales Charge (Load) imposed on purchases (as % of offering price) rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice 5.75%
Maximum Deferred Sales Charge (Load) (as % of the lower of original offering price or redemption proceeds) rr_MaximumDeferredSalesChargeOverOther none
Management Fees rr_ManagementFeesOverAssets 0.86% [3]
Distribution and/or Service (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets 0.24%
Other Expenses rr_OtherExpensesOverAssets 0.96%
Other Expenses of the Fund rr_Component1OtherExpensesOverAssets 0.96%
Other Expenses of the Subsidiary rr_Component2OtherExpensesOverAssets none
Acquired Fund Fees and Expenses rr_AcquiredFundFeesAndExpensesOverAssets 0.06%
Total Annual Fund Operating Expenses rr_ExpensesOverAssets 2.12%
Fee Waiver and/or Expense Reimbursement rr_FeeWaiverOrReimbursementOverAssets (0.07%) [4]
Total Annual Fund Operating Expenses After Fee Waiver and/or Expense Reimbursement rr_NetExpensesOverAssets 2.05%
Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 773
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 1,201
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 1,654
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 2,905
Expense Example, No Redemption, 1 Year rr_ExpenseExampleNoRedemptionYear01 773
Expense Example, No Redemption, 3 Years rr_ExpenseExampleNoRedemptionYear03 1,201
Expense Example, No Redemption, 5 Years rr_ExpenseExampleNoRedemptionYear05 1,654
Expense Example, No Redemption, 10 Years rr_ExpenseExampleNoRedemptionYear10 2,905
Annual Return 2004 rr_AnnualReturn2004 9.50%
Annual Return 2005 rr_AnnualReturn2005 1.84%
Annual Return 2006 rr_AnnualReturn2006 11.24%
Annual Return 2007 rr_AnnualReturn2007 12.25%
Annual Return 2008 rr_AnnualReturn2008 (20.28%)
Annual Return 2009 rr_AnnualReturn2009 16.22%
Annual Return 2010 rr_AnnualReturn2010 7.87%
Annual Return 2011 rr_AnnualReturn2011 (6.34%)
Annual Return 2012 rr_AnnualReturn2012 3.90%
Annual Return 2013 rr_AnnualReturn2013 9.00%
Year to Date Return, Label rr_YearToDateReturnLabel For the period from January 1, 2013 to December 31, 2013 the cumulative return before sales charges and taxes was 9.00%
Bar Chart, Year to Date Return rr_BarChartYearToDateReturn 9.00%
Bar Chart, Year to Date Return, Date rr_BarChartYearToDateReturnDate Dec. 31, 2013
Highest Quarterly Return, Label rr_HighestQuarterlyReturnLabel highest return for a calendar quarter was 7.77% (2nd Qtr 09)
Highest Quarterly Return rr_BarChartHighestQuarterlyReturn 7.77%
Highest Quarterly Return, Date rr_BarChartHighestQuarterlyReturnDate Jun. 30, 2009
Lowest Quarterly Return, Label rr_LowestQuarterlyReturnLabel lowest return was -13.56% (4th Qtr 08)
Lowest Quarterly Return rr_BarChartLowestQuarterlyReturn (13.56%)
Lowest Quarterly Return, Date rr_BarChartLowestQuarterlyReturnDate Dec. 31, 2008
1 Year rr_AverageAnnualReturnYear01 2.73%
5 Years (or life of class, if less) rr_AverageAnnualReturnYear05 4.62%
10 Years (or life of class, if less) rr_AverageAnnualReturnYear10 3.35%
Inception Date rr_AverageAnnualReturnInceptionDate Jan. 03, 1989
(Oppenheimer Flexible Strategies Fund) | Class A | Return After Taxes on Distributions
  
Risk/Return: rr_RiskReturnAbstract  
1 Year rr_AverageAnnualReturnYear01 2.73%
5 Years (or life of class, if less) rr_AverageAnnualReturnYear05 4.15%
10 Years (or life of class, if less) rr_AverageAnnualReturnYear10 2.07%
(Oppenheimer Flexible Strategies Fund) | Class A | Return After Taxes on Distributions and Sale of Fund Shares
  
Risk/Return: rr_RiskReturnAbstract  
1 Year rr_AverageAnnualReturnYear01 1.54%
5 Years (or life of class, if less) rr_AverageAnnualReturnYear05 3.61%
10 Years (or life of class, if less) rr_AverageAnnualReturnYear10 2.58%
(Oppenheimer Flexible Strategies Fund) | Class B
  
Risk/Return: rr_RiskReturnAbstract  
Maximum Sales Charge (Load) imposed on purchases (as % of offering price) rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice none
Maximum Deferred Sales Charge (Load) (as % of the lower of original offering price or redemption proceeds) rr_MaximumDeferredSalesChargeOverOther 5.00%
Management Fees rr_ManagementFeesOverAssets 0.86% [3]
Distribution and/or Service (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets 1.00%
Other Expenses rr_OtherExpensesOverAssets 0.96%
Other Expenses of the Fund rr_Component1OtherExpensesOverAssets 0.96%
Other Expenses of the Subsidiary rr_Component2OtherExpensesOverAssets none
Acquired Fund Fees and Expenses rr_AcquiredFundFeesAndExpensesOverAssets 0.06%
Total Annual Fund Operating Expenses rr_ExpensesOverAssets 2.88%
Fee Waiver and/or Expense Reimbursement rr_FeeWaiverOrReimbursementOverAssets (0.07%) [4]
Total Annual Fund Operating Expenses After Fee Waiver and/or Expense Reimbursement rr_NetExpensesOverAssets 2.81%
Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 788
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 1,198
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 1,734
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 2,892
Expense Example, No Redemption, 1 Year rr_ExpenseExampleNoRedemptionYear01 288
Expense Example, No Redemption, 3 Years rr_ExpenseExampleNoRedemptionYear03 898
Expense Example, No Redemption, 5 Years rr_ExpenseExampleNoRedemptionYear05 1,534
Expense Example, No Redemption, 10 Years rr_ExpenseExampleNoRedemptionYear10 2,892
1 Year rr_AverageAnnualReturnYear01 3.02%
5 Years (or life of class, if less) rr_AverageAnnualReturnYear05 4.58%
10 Years (or life of class, if less) rr_AverageAnnualReturnYear10 3.48%
Inception Date rr_AverageAnnualReturnInceptionDate Sep. 01, 1993
(Oppenheimer Flexible Strategies Fund) | Class C
  
Risk/Return: rr_RiskReturnAbstract  
Maximum Sales Charge (Load) imposed on purchases (as % of offering price) rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice none
Maximum Deferred Sales Charge (Load) (as % of the lower of original offering price or redemption proceeds) rr_MaximumDeferredSalesChargeOverOther 1.00%
Management Fees rr_ManagementFeesOverAssets 0.86% [3]
Distribution and/or Service (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets 0.99%
Other Expenses rr_OtherExpensesOverAssets 0.96%
Other Expenses of the Fund rr_Component1OtherExpensesOverAssets 0.96%
Other Expenses of the Subsidiary rr_Component2OtherExpensesOverAssets none
Acquired Fund Fees and Expenses rr_AcquiredFundFeesAndExpensesOverAssets 0.06%
Total Annual Fund Operating Expenses rr_ExpensesOverAssets 2.87%
Fee Waiver and/or Expense Reimbursement rr_FeeWaiverOrReimbursementOverAssets (0.07%) [4]
Total Annual Fund Operating Expenses After Fee Waiver and/or Expense Reimbursement rr_NetExpensesOverAssets 2.80%
Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 387
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 895
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 1,529
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 3,235
Expense Example, No Redemption, 1 Year rr_ExpenseExampleNoRedemptionYear01 287
Expense Example, No Redemption, 3 Years rr_ExpenseExampleNoRedemptionYear03 895
Expense Example, No Redemption, 5 Years rr_ExpenseExampleNoRedemptionYear05 1,529
Expense Example, No Redemption, 10 Years rr_ExpenseExampleNoRedemptionYear10 3,235
1 Year rr_AverageAnnualReturnYear01 7.16%
5 Years (or life of class, if less) rr_AverageAnnualReturnYear05 5.06%
10 Years (or life of class, if less) rr_AverageAnnualReturnYear10 3.18%
Inception Date rr_AverageAnnualReturnInceptionDate Sep. 01, 1993
(Oppenheimer Flexible Strategies Fund) | Class N
  
Risk/Return: rr_RiskReturnAbstract  
Maximum Sales Charge (Load) imposed on purchases (as % of offering price) rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice none
Maximum Deferred Sales Charge (Load) (as % of the lower of original offering price or redemption proceeds) rr_MaximumDeferredSalesChargeOverOther 1.00%
Management Fees rr_ManagementFeesOverAssets 0.86% [3]
Distribution and/or Service (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets 0.50%
Other Expenses rr_OtherExpensesOverAssets 0.96%
Other Expenses of the Fund rr_Component1OtherExpensesOverAssets 0.96%
Other Expenses of the Subsidiary rr_Component2OtherExpensesOverAssets none
Acquired Fund Fees and Expenses rr_AcquiredFundFeesAndExpensesOverAssets 0.06%
Total Annual Fund Operating Expenses rr_ExpensesOverAssets 2.38%
Fee Waiver and/or Expense Reimbursement rr_FeeWaiverOrReimbursementOverAssets (0.07%) [4]
Total Annual Fund Operating Expenses After Fee Waiver and/or Expense Reimbursement rr_NetExpensesOverAssets 2.31%
Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 337
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 744
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 1,279
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 2,743
Expense Example, No Redemption, 1 Year rr_ExpenseExampleNoRedemptionYear01 237
Expense Example, No Redemption, 3 Years rr_ExpenseExampleNoRedemptionYear03 744
Expense Example, No Redemption, 5 Years rr_ExpenseExampleNoRedemptionYear05 1,279
Expense Example, No Redemption, 10 Years rr_ExpenseExampleNoRedemptionYear10 2,743
1 Year rr_AverageAnnualReturnYear01 7.62%
5 Years (or life of class, if less) rr_AverageAnnualReturnYear05 5.52%
10 Years (or life of class, if less) rr_AverageAnnualReturnYear10 3.62%
Inception Date rr_AverageAnnualReturnInceptionDate Mar. 01, 2001
(Oppenheimer Flexible Strategies Fund) | Class Y
  
Risk/Return: rr_RiskReturnAbstract  
Maximum Sales Charge (Load) imposed on purchases (as % of offering price) rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice none
Maximum Deferred Sales Charge (Load) (as % of the lower of original offering price or redemption proceeds) rr_MaximumDeferredSalesChargeOverOther none
Management Fees rr_ManagementFeesOverAssets 0.86% [3]
Distribution and/or Service (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets none
Other Expenses rr_OtherExpensesOverAssets 0.96%
Other Expenses of the Fund rr_Component1OtherExpensesOverAssets 0.96%
Other Expenses of the Subsidiary rr_Component2OtherExpensesOverAssets none
Acquired Fund Fees and Expenses rr_AcquiredFundFeesAndExpensesOverAssets 0.06%
Total Annual Fund Operating Expenses rr_ExpensesOverAssets 1.88%
Fee Waiver and/or Expense Reimbursement rr_FeeWaiverOrReimbursementOverAssets (0.07%) [4]
Total Annual Fund Operating Expenses After Fee Waiver and/or Expense Reimbursement rr_NetExpensesOverAssets 1.81%
Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 186
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 589
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 1,019
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 2,216
Expense Example, No Redemption, 1 Year rr_ExpenseExampleNoRedemptionYear01 186
Expense Example, No Redemption, 3 Years rr_ExpenseExampleNoRedemptionYear03 589
Expense Example, No Redemption, 5 Years rr_ExpenseExampleNoRedemptionYear05 1,019
Expense Example, No Redemption, 10 Years rr_ExpenseExampleNoRedemptionYear10 2,216
1 Year rr_AverageAnnualReturnYear01 9.22%
5 Years (or life of class, if less) rr_AverageAnnualReturnYear05 6.17%
10 Years (or life of class, if less) rr_AverageAnnualReturnYear10 4.21%
Inception Date rr_AverageAnnualReturnInceptionDate Dec. 16, 1996
(Oppenheimer Flexible Strategies Fund) | Class I
  
Risk/Return: rr_RiskReturnAbstract  
Maximum Sales Charge (Load) imposed on purchases (as % of offering price) rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice none
Maximum Deferred Sales Charge (Load) (as % of the lower of original offering price or redemption proceeds) rr_MaximumDeferredSalesChargeOverOther none
Management Fees rr_ManagementFeesOverAssets 0.86% [3]
Distribution and/or Service (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets none
Other Expenses rr_OtherExpensesOverAssets 0.96%
Other Expenses of the Fund rr_Component1OtherExpensesOverAssets 0.77%
Other Expenses of the Subsidiary rr_Component2OtherExpensesOverAssets none
Acquired Fund Fees and Expenses rr_AcquiredFundFeesAndExpensesOverAssets 0.06%
Total Annual Fund Operating Expenses rr_ExpensesOverAssets 1.69%
Fee Waiver and/or Expense Reimbursement rr_FeeWaiverOrReimbursementOverAssets (0.07%) [4]
Total Annual Fund Operating Expenses After Fee Waiver and/or Expense Reimbursement rr_NetExpensesOverAssets 1.62%
Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 166 [5]
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 530 [5]
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 919 [5]
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 2,008 [5]
Expense Example, No Redemption, 1 Year rr_ExpenseExampleNoRedemptionYear01 166 [5]
Expense Example, No Redemption, 3 Years rr_ExpenseExampleNoRedemptionYear03 530 [5]
Expense Example, No Redemption, 5 Years rr_ExpenseExampleNoRedemptionYear05 919 [5]
Expense Example, No Redemption, 10 Years rr_ExpenseExampleNoRedemptionYear10 2,008 [5]
(Oppenheimer Small- & Mid- Cap Value Fund)
  
Risk/Return: rr_RiskReturnAbstract  
Objective, Primary [Text Block] rr_ObjectivePrimaryTextBlock

Investment Objective. The Fund seeks capital appreciation.
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. You may qualify for sales charge discounts if you (or you and your spouse) invest, or agree to invest in the future, at least $25,000 in certain funds in the Oppenheimer family of funds. More information about these and other discounts is available from your financial professional and in the section "About Your Account" beginning on page 13 of the prospectus and in the sections "How to Buy Shares" beginning on page 56 and "Appendix A" in the Fund's Statement of Additional Information.
Expense Breakpoint Discounts [Text] rr_ExpenseBreakpointDiscounts You may qualify for sales charge discounts if you (or you and your spouse) invest, or agree to invest in the future, at least $25,000 in certain funds in the Oppenheimer family of funds.
Expense Breakpoint, Minimum Investment Required [Amount] rr_ExpenseBreakpointMinimumInvestmentRequiredAmount 25,000
Shareholder Fees Caption [Text] rr_ShareholderFeesCaption

Shareholder Fees (fees paid directly from your investment)

Operating Expenses Caption [Text] rr_OperatingExpensesCaption

Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value your investment)

 [1]
Expenses Restated to Reflect Current [Text] rr_ExpensesRestatedToReflectCurrent Expenses have been restated to reflect current fees.
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:
Expense Example by, Year, Caption [Text] rr_ExpenseExampleByYearCaption

If shares are redeemed

Expense Example, No Redemption, By Year, Caption [Text] rr_ExpenseExampleNoRedemptionByYearCaption

If shares are not redeemed

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 and may result in higher taxes when Fund shares are held in a taxable account. 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 128% of the average value of its portfolio.
Portfolio Turnover, Rate rr_PortfolioTurnoverRate 128.00%
Strategy Narrative [Text Block] rr_StrategyNarrativeTextBlock

Principal Investment Strategies. The Fund mainly invests in common stocks of U.S. companies that have a market capitalization up to $13 billion. That range includes both small- and mid-cap stocks. The Fund has no fixed ratio for the percentage of small-cap and mid-cap stocks required to be held in its portfolio. Under normal market conditions the Fund will invest at least 80% of its net assets, plus the amount of any borrowings for investment purposes, in equity securities of small-cap and mid-cap issuers.

The Fund primarily invests in U.S. companies but may also purchase securities of issuers in any country, including developed and emerging market countries. While the Fund has no limits on the percentage of its assets it can invest in foreign securities, normally it does not expect to invest substantial amounts of its assets in foreign securities and generally limits investments in emerging markets to not more than 5% of its total assets. The Fund emphasizes securities that the portfolio manager believes are undervalued.

In selecting investments for the Fund, the portfolio managers look for stocks of small- and mid-cap companies that they believe have been undervalued by the market. A security may be undervalued because the market is not aware of the issuer's intrinsic value, does not yet recognize its future potential, or the issuer may be temporarily out of favor. The Fund seeks to realize gains in the prices of those securities when other investors recognize their real or prospective worth. The portfolio managers use a "bottom up" approach to select securities one at a time before considering industry trends. Those companies may have a low ratio of their stock price to earnings, for example. The portfolio managers also analyze factors such as a company's book value, sales, earnings, growth potential and cash flows. After considering these criteria, the portfolio manager may also look at broader industry and economic trends that could affect the growth potential of particular small- and mid-cap stocks. The portfolio managers currently focus on companies with the following characteristics, which may vary in particular cases and may change over time:

  • Favorable supply/demand conditions for key products

  • Development of new products or businesses

  • Quality of management

  • Competitive position in the marketplace

  • Effective allocation of capital

The Fund may sell securities that the portfolio manager believes no longer meet the above criteria, but is not required to do so.
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 more or less than what you paid for them. These risks mean that you can lose money by investing in the Fund.

Main Risks of Investing in Stock. 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. 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 and 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.

Main Risks of Value Investing. Value investing entails the risk that if the market does not recognize that the 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 the 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.

Main Risks of Small- and Mid-Sized Companies. The stock prices of small- and mid-sized companies may be more volatile and their securities may be more difficult to sell than those of larger companies. They may not have established markets, may have fewer customers and product lines, may have unseasoned management or less management depth and may have more limited access to financial resources. Smaller companies may not pay dividends or provide capital gains for some time, if at all.

The Fund can invest up to 5% of its total assets in securities of small, unseasoned companies.

Price Arbitrage. Because the Fund may invest in smaller company stocks that might trade infrequently, investors might seek to trade fund shares based on their knowledge or understanding of the value of those securities (this is sometimes referred to as "price arbitrage"). If such price arbitrage were successful, it might interfere with the efficient management of the Fund's portfolio and the Fund may be required to sell securities at disadvantageous times or prices to satisfy the liquidity requirements created by that activity. Successful price arbitrage might also dilute the value of fund shares held by other shareholders.

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 or group of industries.

Main Risks of Foreign Investing. Foreign securities are subject to special risks. 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 securities denominated in that foreign currency and in the value of any income or distributions the Fund may receive on those securities. 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. These risks may be greater for investments in developing or emerging market countries.

Who Is the Fund Designed For? The Fund is designed primarily for investors seeking capital appreciation. Those investors should be willing to assume the risks of short-term share price fluctuations and losses that are typical for funds emphasizing small- and mid-cap stock investments. Since the Fund does not seek current income and its income from investments will likely be small, 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 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 more or less than what you paid for them. These risks mean that you can 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.
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 performance (for Class A shares) 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. The Fund's past investment performance (before and after taxes) 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: https://www.oppenheimerfunds.com/fund/SmallMidCapValueFund
Bar Chart Does Not Reflect Sales Loads [Text] rr_BarChartDoesNotReflectSalesLoads Sales charges and taxes are not included and the returns would be lower if they were.
Bar Chart Closing [Text Block] rr_BarChartClosingTextBlock

Sales charges and taxes are not included and the returns would be lower if they were. During the period shown, the highest return for a calendar quarter was 23.11% (2nd Qtr 09) and the lowest return was -31.17% (4th Qtr 08). For the period from January 1, 2013 through December 31, 2013 the cumulative return before sales charges and taxes was 37.76%.
Performance Table Heading rr_PerformanceTableHeading

Average Annual Total Returns for the periods ended December 31, 2013
Performance Table Narrative rr_PerformanceTableNarrativeTextBlock

The following table shows the average annual total returns for each class of the Fund's shares. After-tax returns are calculated using the highest individual federal marginal income tax rates and do not reflect the impact of state or local taxes. Your actual after-tax returns, depending on your individual tax situation, may differ from those shown and after-tax returns shown are not relevant to investors who hold their Fund shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts. After-tax returns are shown for only one class and after-tax returns for other classes will vary.
Performance Table Uses Highest Federal Rate rr_PerformanceTableUsesHighestFederalRate After-tax returns are calculated using the highest individual federal marginal income tax rates and do not reflect the impact of state or local taxes.
Performance Table Not Relevant to Tax Deferred rr_PerformanceTableNotRelevantToTaxDeferred Your actual after-tax returns, depending on your individual tax situation, may differ from those shown and after-tax returns shown are not relevant to investors who hold their Fund shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts.
Performance Past Does Not Indicate Future [Text] rr_PerformancePastDoesNotIndicateFuture The Fund's past investment performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future.
Performance Table One Class of after Tax Shown [Text] rr_PerformanceTableOneClassOfAfterTaxShown After-tax returns are shown for only one class and after-tax returns for other classes will vary.
Performance Availability Website Address [Text] rr_PerformanceAvailabilityWebSiteAddress https://www.oppenheimerfunds.com/fund/SmallMidCapValueFund
(Oppenheimer Small- & Mid- Cap Value Fund) | Russell 2000® Index
  
Risk/Return: rr_RiskReturnAbstract  
1 Year rr_AverageAnnualReturnYear01 38.82%
5 Years (or life of class, if less) rr_AverageAnnualReturnYear05 20.08%
10 Years (or life of class, if less) rr_AverageAnnualReturnYear10 9.07%
(Oppenheimer Small- & Mid- Cap Value Fund) | Russell 2000® Index (reflects no deduction for fees, expenses or taxes)
  
Risk/Return: rr_RiskReturnAbstract  
5 Years (or life of class, if less) rr_AverageAnnualReturnYear05 22.45% [6]
10 Years (or life of class, if less) rr_AverageAnnualReturnYear10 8.93% [7]
(Oppenheimer Small- & Mid- Cap Value Fund) | Russell 2500® Index
  
Risk/Return: rr_RiskReturnAbstract  
1 Year rr_AverageAnnualReturnYear01 36.80%
5 Years (or life of class, if less) rr_AverageAnnualReturnYear05 21.77%
10 Years (or life of class, if less) rr_AverageAnnualReturnYear10 9.81%
(Oppenheimer Small- & Mid- Cap Value Fund) | Russell 2500® Index (reflects no deduction for fees, expenses or taxes)
  
Risk/Return: rr_RiskReturnAbstract  
5 Years (or life of class, if less) rr_AverageAnnualReturnYear05 22.14% [6]
10 Years (or life of class, if less) rr_AverageAnnualReturnYear10 9.47% [7]
(Oppenheimer Small- & Mid- Cap Value Fund) | Russell 2500® Value Index
  
Risk/Return: rr_RiskReturnAbstract  
1 Year rr_AverageAnnualReturnYear01 33.32%
5 Years (or life of class, if less) rr_AverageAnnualReturnYear05 19.61%
10 Years (or life of class, if less) rr_AverageAnnualReturnYear10 9.29%
(Oppenheimer Small- & Mid- Cap Value Fund) | Russell 2500® Value Index (reflects no deduction for fees, expenses or taxes)
  
Risk/Return: rr_RiskReturnAbstract  
5 Years (or life of class, if less) rr_AverageAnnualReturnYear05 22.40% [6]
10 Years (or life of class, if less) rr_AverageAnnualReturnYear10 8.38% [7]
(Oppenheimer Small- & Mid- Cap Value Fund) | Class A
  
Risk/Return: rr_RiskReturnAbstract  
Maximum Sales Charge (Load) imposed on purchases (as % of offering price) rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice 5.75%
Maximum Deferred Sales Charge (Load) (as % of the lower of original offering price or redemption proceeds) rr_MaximumDeferredSalesChargeOverOther none
Management Fees rr_ManagementFeesOverAssets 0.69%
Distribution and/or Service (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets 0.25%
Other Expenses rr_OtherExpensesOverAssets 0.23%
Total Annual Fund Operating Expenses rr_ExpensesOverAssets 1.17%
Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 688
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 927
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 1,185
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 1,921
Expense Example, No Redemption, 1 Year rr_ExpenseExampleNoRedemptionYear01 688
Expense Example, No Redemption, 3 Years rr_ExpenseExampleNoRedemptionYear03 927
Expense Example, No Redemption, 5 Years rr_ExpenseExampleNoRedemptionYear05 1,185
Expense Example, No Redemption, 10 Years rr_ExpenseExampleNoRedemptionYear10 1,921
Annual Return 2004 rr_AnnualReturn2004 28.30%
Annual Return 2005 rr_AnnualReturn2005 11.73%
Annual Return 2006 rr_AnnualReturn2006 17.98%
Annual Return 2007 rr_AnnualReturn2007 9.13%
Annual Return 2008 rr_AnnualReturn2008 (49.93%)
Annual Return 2009 rr_AnnualReturn2009 44.61%
Annual Return 2010 rr_AnnualReturn2010 20.54%
Annual Return 2011 rr_AnnualReturn2011 (7.52%)
Annual Return 2012 rr_AnnualReturn2012 9.48%
Annual Return 2013 rr_AnnualReturn2013 37.76%
Year to Date Return, Label rr_YearToDateReturnLabel For the period from January 1, 2013 through December 31, 2013 the cumulative return before sales charges and taxes was 37.76%
Bar Chart, Year to Date Return rr_BarChartYearToDateReturn 37.76%
Bar Chart, Year to Date Return, Date rr_BarChartYearToDateReturnDate Dec. 31, 2013
Highest Quarterly Return, Label rr_HighestQuarterlyReturnLabel highest return for a calendar quarter was 23.11% (2nd Qtr 09)
Highest Quarterly Return rr_BarChartHighestQuarterlyReturn 23.11%
Highest Quarterly Return, Date rr_BarChartHighestQuarterlyReturnDate Jun. 30, 2009
Lowest Quarterly Return, Label rr_LowestQuarterlyReturnLabel lowest return was -31.17% (4th Qtr 08)
Lowest Quarterly Return rr_BarChartLowestQuarterlyReturn (31.17%)
Lowest Quarterly Return, Date rr_BarChartLowestQuarterlyReturnDate Dec. 31, 2008
1 Year rr_AverageAnnualReturnYear01 29.85%
5 Years (or life of class, if less) rr_AverageAnnualReturnYear05 18.04%
10 Years (or life of class, if less) rr_AverageAnnualReturnYear10 7.79%
Inception Date rr_AverageAnnualReturnInceptionDate Jan. 03, 1989
(Oppenheimer Small- & Mid- Cap Value Fund) | Class A | Return After Taxes on Distributions
  
Risk/Return: rr_RiskReturnAbstract  
1 Year rr_AverageAnnualReturnYear01 29.47%
5 Years (or life of class, if less) rr_AverageAnnualReturnYear05 17.96%
10 Years (or life of class, if less) rr_AverageAnnualReturnYear10 6.94%
(Oppenheimer Small- & Mid- Cap Value Fund) | Class A | Return After Taxes on Distributions and Sale of Fund Shares
  
Risk/Return: rr_RiskReturnAbstract  
1 Year rr_AverageAnnualReturnYear01 16.89%
5 Years (or life of class, if less) rr_AverageAnnualReturnYear05 14.65%
10 Years (or life of class, if less) rr_AverageAnnualReturnYear10 6.08%
(Oppenheimer Small- & Mid- Cap Value Fund) | Class B
  
Risk/Return: rr_RiskReturnAbstract  
Maximum Sales Charge (Load) imposed on purchases (as % of offering price) rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice none
Maximum Deferred Sales Charge (Load) (as % of the lower of original offering price or redemption proceeds) rr_MaximumDeferredSalesChargeOverOther 5.00%
Management Fees rr_ManagementFeesOverAssets 0.69%
Distribution and/or Service (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets 1.00%
Other Expenses rr_OtherExpensesOverAssets 0.23%
Total Annual Fund Operating Expenses rr_ExpensesOverAssets 1.92%
Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 697
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 909
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 1,247
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 1,885
Expense Example, No Redemption, 1 Year rr_ExpenseExampleNoRedemptionYear01 197
Expense Example, No Redemption, 3 Years rr_ExpenseExampleNoRedemptionYear03 609
Expense Example, No Redemption, 5 Years rr_ExpenseExampleNoRedemptionYear05 1,047
Expense Example, No Redemption, 10 Years rr_ExpenseExampleNoRedemptionYear10 1,885
1 Year rr_AverageAnnualReturnYear01 31.57%
5 Years (or life of class, if less) rr_AverageAnnualReturnYear05 18.26%
10 Years (or life of class, if less) rr_AverageAnnualReturnYear10 7.90%
Inception Date rr_AverageAnnualReturnInceptionDate Sep. 01, 1993
(Oppenheimer Small- & Mid- Cap Value Fund) | Class C
  
Risk/Return: rr_RiskReturnAbstract  
Maximum Sales Charge (Load) imposed on purchases (as % of offering price) rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice none
Maximum Deferred Sales Charge (Load) (as % of the lower of original offering price or redemption proceeds) rr_MaximumDeferredSalesChargeOverOther 1.00%
Management Fees rr_ManagementFeesOverAssets 0.69%
Distribution and/or Service (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets 1.00%
Other Expenses rr_OtherExpensesOverAssets 0.23%
Total Annual Fund Operating Expenses rr_ExpensesOverAssets 1.92%
Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 297
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 609
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 1,047
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 2,264
Expense Example, No Redemption, 1 Year rr_ExpenseExampleNoRedemptionYear01 197
Expense Example, No Redemption, 3 Years rr_ExpenseExampleNoRedemptionYear03 609
Expense Example, No Redemption, 5 Years rr_ExpenseExampleNoRedemptionYear05 1,047
Expense Example, No Redemption, 10 Years rr_ExpenseExampleNoRedemptionYear10 2,264
1 Year rr_AverageAnnualReturnYear01 35.74%
5 Years (or life of class, if less) rr_AverageAnnualReturnYear05 18.54%
10 Years (or life of class, if less) rr_AverageAnnualReturnYear10 7.59%
Inception Date rr_AverageAnnualReturnInceptionDate Sep. 01, 1993
(Oppenheimer Small- & Mid- Cap Value Fund) | Class N
  
Risk/Return: rr_RiskReturnAbstract  
Maximum Sales Charge (Load) imposed on purchases (as % of offering price) rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice none
Maximum Deferred Sales Charge (Load) (as % of the lower of original offering price or redemption proceeds) rr_MaximumDeferredSalesChargeOverOther 1.00%
Management Fees rr_ManagementFeesOverAssets 0.69%
Distribution and/or Service (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets 0.50%
Other Expenses rr_OtherExpensesOverAssets 0.23%
Total Annual Fund Operating Expenses rr_ExpensesOverAssets 1.42%
Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 246
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 452
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 782
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 1,714
Expense Example, No Redemption, 1 Year rr_ExpenseExampleNoRedemptionYear01 146
Expense Example, No Redemption, 3 Years rr_ExpenseExampleNoRedemptionYear03 452
Expense Example, No Redemption, 5 Years rr_ExpenseExampleNoRedemptionYear05 782
Expense Example, No Redemption, 10 Years rr_ExpenseExampleNoRedemptionYear10 1,714
1 Year rr_AverageAnnualReturnYear01 36.45%
5 Years (or life of class, if less) rr_AverageAnnualReturnYear05 19.15%
10 Years (or life of class, if less) rr_AverageAnnualReturnYear10 8.08%
Inception Date rr_AverageAnnualReturnInceptionDate Mar. 01, 2001
(Oppenheimer Small- & Mid- Cap Value Fund) | Class Y
  
Risk/Return: rr_RiskReturnAbstract  
Maximum Sales Charge (Load) imposed on purchases (as % of offering price) rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice none
Maximum Deferred Sales Charge (Load) (as % of the lower of original offering price or redemption proceeds) rr_MaximumDeferredSalesChargeOverOther none
Management Fees rr_ManagementFeesOverAssets 0.69%
Distribution and/or Service (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets none
Other Expenses rr_OtherExpensesOverAssets 0.23%
Total Annual Fund Operating Expenses rr_ExpensesOverAssets 0.92%
Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 94
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 295
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 512
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 1,136
Expense Example, No Redemption, 1 Year rr_ExpenseExampleNoRedemptionYear01 94
Expense Example, No Redemption, 3 Years rr_ExpenseExampleNoRedemptionYear03 295
Expense Example, No Redemption, 5 Years rr_ExpenseExampleNoRedemptionYear05 512
Expense Example, No Redemption, 10 Years rr_ExpenseExampleNoRedemptionYear10 1,136
1 Year rr_AverageAnnualReturnYear01 38.17%
5 Years (or life of class, if less) rr_AverageAnnualReturnYear05 19.85%
10 Years (or life of class, if less) rr_AverageAnnualReturnYear10 6.62%
Inception Date rr_AverageAnnualReturnInceptionDate Oct. 24, 2005
(Oppenheimer Small- & Mid- Cap Value Fund) | Class I
  
Risk/Return: rr_RiskReturnAbstract  
Maximum Sales Charge (Load) imposed on purchases (as % of offering price) rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice none
Maximum Deferred Sales Charge (Load) (as % of the lower of original offering price or redemption proceeds) rr_MaximumDeferredSalesChargeOverOther none
Management Fees rr_ManagementFeesOverAssets 0.69%
Distribution and/or Service (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets none
Other Expenses rr_OtherExpensesOverAssets 0.04%
Total Annual Fund Operating Expenses rr_ExpensesOverAssets 0.73%
Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 75
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 234
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 407
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 910
Expense Example, No Redemption, 1 Year rr_ExpenseExampleNoRedemptionYear01 75
Expense Example, No Redemption, 3 Years rr_ExpenseExampleNoRedemptionYear03 234
Expense Example, No Redemption, 5 Years rr_ExpenseExampleNoRedemptionYear05 407
Expense Example, No Redemption, 10 Years rr_ExpenseExampleNoRedemptionYear10 $ 910
1 Year rr_AverageAnnualReturnYear01 38.48%
5 Years (or life of class, if less) rr_AverageAnnualReturnYear05 19.61%
10 Years (or life of class, if less) rr_AverageAnnualReturnYear10   
Inception Date rr_AverageAnnualReturnInceptionDate Feb. 28, 2012
[1] Expenses have been restated to reflect current fees.
[2] From: 02/28/12
[3] "Management Fees" reflects the gross management fees paid to the Manager by the Fund and the gross management fee for the Subsidiary during the Fund's most recent fiscal year.
[4] After discussions with the Fund's Board, the Manager has contractually agreed to waive fees and/or reimburse Fund expenses in an amount equal to the indirect management fees incurred through the Fund's investments in funds managed by the Manager or its affiliates. This fee waiver and/or expense reimbursement may not be amended or withdrawn for one year from the date of this prospectus, unless approved by the Board. The Manager has also contractually agreed to waive the management fee it receives from the Fund in an amount equal to the management fee it receives from the Subsidiary. This undertaking will continue to be in effect for so long as the Fund invests in the Subsidiary and may not be terminated unless approved by the Fund's Board.
[5] Based on estimated expenses for Class I shares for the first fiscal year.
[6] As of 02/28/2012
[7] As of 10/31/2005