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Label Element Value
(Oppenheimer Equity Income Fund)  
Prospectus: rr_ProspectusTable  
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 14 of the prospectus and in the sections "How to Buy Shares" beginning on page 49 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 of 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. Any applicable fee waivers and/or expense reimbursements are reflected in the below examples for the period during which such fee waivers and/or expense reimbursements are in effect. Although your actual costs may be higher or lower, based on these assumptions your expenses would be as follows:
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 43% of the average value of its portfolio.
Portfolio Turnover, Rate rr_PortfolioTurnoverRate 43.00%
Strategy Narrative [Text Block] rr_StrategyNarrativeTextBlock

Principal Investment Strategies. The Fund mainly invests in common stocks of U.S. companies that the portfolio manager believes are undervalued. Under normal circumstances, the Fund will invest at least 80% of its net assets, plus borrowings for investment purposes, in equity securities. The Fund may invest in other equity securities, such as preferred stocks, warrants and securities convertible into common stocks. The Fund may invest in equity securities issued by companies of different capitalization ranges, but will typically focus on larger capitalization stocks. The Fund may invest in equity securities both for current income from dividends as well as for growth opportunities.

The Fund can buy securities of companies in developed and emerging market countries. The Fund has no limits on the amounts it can invest in foreign securities. However, currently it does not intend to invest more than 25% of its net assets in securities of issuers in any single foreign country or more than 5% of its net assets in companies or government issuers in emerging market countries.

In selecting investments for the Fund, the portfolio manager mainly relies on a value-oriented investing style. 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 Fund also looks for securities that offer higher than average dividends. The portfolio manager generally uses a fundamental approach to analyzing issuers, for example, by looking at price/earnings ratios and current balance sheet information. Currently, the portfolio manager focuses on securities that have high current income and are believed to have substantial earnings possibilities, have low price/earnings ratios relative to other securities, and that have a low price relative to the underlying value of the issuer's assets, earnings, cash flow or other factors. These 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.
Risk Narrative [Text Block] rr_RiskNarrativeTextBlock

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

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

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

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

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

Risks of Small- and Mid-Cap Companies. The prices of securities issued by small- and mid-cap companies may be more volatile and such 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 their securities may not provide capital gains for some time, if at all.

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

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

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

Who Is the Fund Designed For? The Fund is designed primarily for investors seeking total return from capital appreciation and income over the long term. Those investors should be willing to assume the risks of short-term share price fluctuations and losses that are typical for a fund emphasizing investments in equity securities. Since the Fund's income level will fluctuate, it is not designed for investors needing an assured level of current income. The Fund is not a complete investment program. You should carefully consider your own investment goals and risk tolerance before investing in the Fund.

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

Risk Lose Money [Text] rr_RiskLoseMoney The price of the Fund's shares can go up and down substantially. The value of the Fund's investments may change because of broad changes in the markets in which the Fund invests or because of poor investment selection, which could cause the Fund to underperform other funds with similar investment objectives. There is no assurance that the Fund will achieve its investment objective. When you redeem your shares, they may be worth less than what you paid for them. These risks mean that you can lose money by investing in the Fund.
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/EquityIncomeFund
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 25.27% (2nd Qtr 09) and the lowest return for a calendar quarter was -19.61% (3rd Qtr 11). For the period from January 1, 2015 to September 30, 2015 the cumulative return before sales charges and taxes was -10.89%.

Performance Table Heading rr_PerformanceTableHeading

Average Annual Total Returns for the periods ended December 31, 2014
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/EquityIncomeFund
(Oppenheimer Equity Income Fund) | Russell 1000 Value Index (reflects no deduction for fees, expenses or taxes)  
Prospectus: rr_ProspectusTable  
1 Year rr_AverageAnnualReturnYear01 13.45%
5 Years (or life of class, if less) rr_AverageAnnualReturnYear05 15.42%
10 Years (or life of class, if less) rr_AverageAnnualReturnYear10 7.30%
(Oppenheimer Equity Income Fund) | Russell 1000 Value Index (reflects no deduction for fees, expenses or taxes)  
Prospectus: rr_ProspectusTable  
5 Years (or life of class, if less) rr_AverageAnnualReturnYear05 14.36% [2]
10 Years (or life of class, if less) rr_AverageAnnualReturnYear10
(Oppenheimer Equity Income Fund) | Russell 1000 Value Index (reflects no deduction for fees, expenses or taxes)  
Prospectus: rr_ProspectusTable  
5 Years (or life of class, if less) rr_AverageAnnualReturnYear05 19.00% [3]
10 Years (or life of class, if less) rr_AverageAnnualReturnYear10
(Oppenheimer Equity Income Fund) | Class A  
Prospectus: rr_ProspectusTable  
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 0.53%
Distribution and/or Service (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets 0.25%
Other Expenses rr_OtherExpensesOverAssets 0.24%
Total Annual Fund Operating Expenses rr_ExpensesOverAssets 1.02%
Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 $ 674
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 883
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 1,109
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 1,757
Expense Example, No Redemption, 1 Year rr_ExpenseExampleNoRedemptionYear01 674
Expense Example, No Redemption, 3 Years rr_ExpenseExampleNoRedemptionYear03 883
Expense Example, No Redemption, 5 Years rr_ExpenseExampleNoRedemptionYear05 1,109
Expense Example, No Redemption, 10 Years rr_ExpenseExampleNoRedemptionYear10 $ 1,757
Annual Return 2005 rr_AnnualReturn2005 9.25%
Annual Return 2006 rr_AnnualReturn2006 13.56%
Annual Return 2007 rr_AnnualReturn2007 2.55%
Annual Return 2008 rr_AnnualReturn2008 (35.56%)
Annual Return 2009 rr_AnnualReturn2009 42.22%
Annual Return 2010 rr_AnnualReturn2010 20.86%
Annual Return 2011 rr_AnnualReturn2011 (6.43%)
Annual Return 2012 rr_AnnualReturn2012 19.15%
Annual Return 2013 rr_AnnualReturn2013 31.63%
Annual Return 2014 rr_AnnualReturn2014 10.05%
Year to Date Return, Label rr_YearToDateReturnLabel For the period from January 1, 2015 to September 30, 2015 the cumulative return before sales charges and taxes was -10.89%.
Bar Chart, Year to Date Return rr_BarChartYearToDateReturn (10.89%)
Bar Chart, Year to Date Return, Date rr_BarChartYearToDateReturnDate Sep. 30, 2015
Highest Quarterly Return, Label rr_HighestQuarterlyReturnLabel the highest return for a calendar quarter was 25.27% (2nd Qtr 09)
Highest Quarterly Return rr_BarChartHighestQuarterlyReturn 25.27%
Highest Quarterly Return, Date rr_BarChartHighestQuarterlyReturnDate Jun. 30, 2009
Lowest Quarterly Return, Label rr_LowestQuarterlyReturnLabel the lowest return for a calendar quarter was -19.61% (3rd Qtr 11)
Lowest Quarterly Return rr_BarChartLowestQuarterlyReturn (19.61%)
Lowest Quarterly Return, Date rr_BarChartLowestQuarterlyReturnDate Sep. 30, 2011
Inception Date rr_AverageAnnualReturnInceptionDate Feb. 13, 1987
1 Year rr_AverageAnnualReturnYear01 3.72%
5 Years (or life of class, if less) rr_AverageAnnualReturnYear05 12.96%
10 Years (or life of class, if less) rr_AverageAnnualReturnYear10 7.93%
(Oppenheimer Equity Income Fund) | Class A | Return After Taxes on Distributions  
Prospectus: rr_ProspectusTable  
1 Year rr_AverageAnnualReturnYear01 1.26%
5 Years (or life of class, if less) rr_AverageAnnualReturnYear05 11.66%
10 Years (or life of class, if less) rr_AverageAnnualReturnYear10 6.53%
(Oppenheimer Equity Income Fund) | Class A | Return After Taxes on Distributions and Sale of Fund Shares  
Prospectus: rr_ProspectusTable  
1 Year rr_AverageAnnualReturnYear01 2.96%
5 Years (or life of class, if less) rr_AverageAnnualReturnYear05 10.10%
10 Years (or life of class, if less) rr_AverageAnnualReturnYear10 6.14%
(Oppenheimer Equity Income Fund) | Class B  
Prospectus: rr_ProspectusTable  
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 0.53%
Distribution and/or Service (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets 1.00%
Other Expenses rr_OtherExpensesOverAssets 0.23%
Total Annual Fund Operating Expenses rr_ExpensesOverAssets 1.76%
Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 $ 680
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 859
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 1,162
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 1,711
Expense Example, No Redemption, 1 Year rr_ExpenseExampleNoRedemptionYear01 180
Expense Example, No Redemption, 3 Years rr_ExpenseExampleNoRedemptionYear03 559
Expense Example, No Redemption, 5 Years rr_ExpenseExampleNoRedemptionYear05 962
Expense Example, No Redemption, 10 Years rr_ExpenseExampleNoRedemptionYear10 $ 1,711
Inception Date rr_AverageAnnualReturnInceptionDate Mar. 03, 1997
1 Year rr_AverageAnnualReturnYear01 4.23%
5 Years (or life of class, if less) rr_AverageAnnualReturnYear05 13.04%
10 Years (or life of class, if less) rr_AverageAnnualReturnYear10 8.00%
(Oppenheimer Equity Income Fund) | Class C  
Prospectus: rr_ProspectusTable  
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 0.53%
Distribution and/or Service (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets 1.00%
Other Expenses rr_OtherExpensesOverAssets 0.23%
Total Annual Fund Operating Expenses rr_ExpensesOverAssets 1.76%
Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 $ 280
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 559
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 962
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 2,091
Expense Example, No Redemption, 1 Year rr_ExpenseExampleNoRedemptionYear01 180
Expense Example, No Redemption, 3 Years rr_ExpenseExampleNoRedemptionYear03 559
Expense Example, No Redemption, 5 Years rr_ExpenseExampleNoRedemptionYear05 962
Expense Example, No Redemption, 10 Years rr_ExpenseExampleNoRedemptionYear10 $ 2,091
Inception Date rr_AverageAnnualReturnInceptionDate Mar. 03, 1997
1 Year rr_AverageAnnualReturnYear01 8.24%
5 Years (or life of class, if less) rr_AverageAnnualReturnYear05 13.42%
10 Years (or life of class, if less) rr_AverageAnnualReturnYear10 7.68%
(Oppenheimer Equity Income Fund) | Class R  
Prospectus: rr_ProspectusTable  
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 0.53%
Distribution and/or Service (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets 0.50%
Other Expenses rr_OtherExpensesOverAssets 0.23%
Total Annual Fund Operating Expenses rr_ExpensesOverAssets 1.26%
Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 $ 129
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 402
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 696
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 1,532
Expense Example, No Redemption, 1 Year rr_ExpenseExampleNoRedemptionYear01 129
Expense Example, No Redemption, 3 Years rr_ExpenseExampleNoRedemptionYear03 402
Expense Example, No Redemption, 5 Years rr_ExpenseExampleNoRedemptionYear05 696
Expense Example, No Redemption, 10 Years rr_ExpenseExampleNoRedemptionYear10 $ 1,532
Inception Date rr_AverageAnnualReturnInceptionDate Mar. 01, 2001
1 Year rr_AverageAnnualReturnYear01 8.76%
5 Years (or life of class, if less) rr_AverageAnnualReturnYear05 13.89%
10 Years (or life of class, if less) rr_AverageAnnualReturnYear10 8.16%
(Oppenheimer Equity Income Fund) | Class Y  
Prospectus: rr_ProspectusTable  
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 0.53%
Distribution and/or Service (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets none
Other Expenses rr_OtherExpensesOverAssets 0.23%
Total Annual Fund Operating Expenses rr_ExpensesOverAssets 0.76%
Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 $ 78
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 244
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 424
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 946
Expense Example, No Redemption, 1 Year rr_ExpenseExampleNoRedemptionYear01 78
Expense Example, No Redemption, 3 Years rr_ExpenseExampleNoRedemptionYear03 244
Expense Example, No Redemption, 5 Years rr_ExpenseExampleNoRedemptionYear05 424
Expense Example, No Redemption, 10 Years rr_ExpenseExampleNoRedemptionYear10 $ 946
Inception Date rr_AverageAnnualReturnInceptionDate Feb. 28, 2011
1 Year rr_AverageAnnualReturnYear01 10.35%
5 Years (or life of class, if less) rr_AverageAnnualReturnYear05 12.17%
10 Years (or life of class, if less) rr_AverageAnnualReturnYear10
(Oppenheimer Equity Income Fund) | Class I  
Prospectus: rr_ProspectusTable  
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 0.53%
Distribution and/or Service (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets none
Other Expenses rr_OtherExpensesOverAssets 0.05%
Total Annual Fund Operating Expenses rr_ExpensesOverAssets 0.58%
Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 $ 59
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 186
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 325
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 728
Expense Example, No Redemption, 1 Year rr_ExpenseExampleNoRedemptionYear01 59
Expense Example, No Redemption, 3 Years rr_ExpenseExampleNoRedemptionYear03 186
Expense Example, No Redemption, 5 Years rr_ExpenseExampleNoRedemptionYear05 325
Expense Example, No Redemption, 10 Years rr_ExpenseExampleNoRedemptionYear10 $ 728
Inception Date rr_AverageAnnualReturnInceptionDate Feb. 28, 2012
1 Year rr_AverageAnnualReturnYear01 10.57%
5 Years (or life of class, if less) rr_AverageAnnualReturnYear05 17.02%
10 Years (or life of class, if less) rr_AverageAnnualReturnYear10
[1] Expenses have been restated to reflect current fees.
[2] As of 02/28/11
[3] As of 02/29/12