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Label Element Value
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 17 of the prospectus and in the sections "How to Buy Shares" beginning on page 53 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 $ 25,000rr_ExpenseBreakpointMinimumInvestmentRequiredAmount
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. 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 46% of the average value of its portfolio.

Portfolio Turnover, Rate rr_PortfolioTurnoverRate 46.00%rr_PortfolioTurnoverRate
Strategy Narrative [Text Block] rr_StrategyNarrativeTextBlock

Principal Investment Strategies. The Fund mainly invests in common stocks of companies that the portfolio manager believes are undervalued. The Fund may also invest in other equity securities, such as preferred stock, rights, warrants and securities convertible into common stock. The Fund may buy securities issued by companies of any size or market capitalization range and at times might increase its emphasis on securities of issuers in a particular capitalization range. While the Fund does not limit its investments to issuers in a particular capitalization range, the portfolio manager currently focuses on securities of larger-size companies.

The Fund may invest up to 25% of its total assets in foreign securities of companies or governments in any country, including in developed and emerging market countries. The Fund may invest up to 10% of its net assets in debt securities.

In selecting investments for the Fund's portfolio, the portfolio manager looks for companies he believes 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 manager uses a "bottom up" approach to select securities one at a time before considering industry trends. The portfolio manager uses fundamental analysis to select securities based on factors such as a company's long-term earnings and growth potential. The portfolio manager currently focuses on companies with the following characteristics, which may vary in particular cases and may change over time:

  • Attractive valuation,

  • Future supply/demand conditions for its key products,

  • Product cycles,

  • Quality of management,

  • Competitive position in the market place,

  • Reinvestment plans for cash generated, and

  • Better-than-expected earnings reports.

The portfolio manager also monitors individual issuers for changes in their business fundamentals or prospects that may trigger a decision to sell a security, but does not require a decision to do so. The portfolio manager may consider selling a stock for one or more of the following reasons:

  • the stock price is approaching its price target,

  • the company's fundamentals are deteriorating, or

  • alternative investment ideas have been developed.

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.

Risks of Investing in Stock. The value of a 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-sized companies, growth or value stocks, or stocks of companies in a particular industry, its share value may fluctuate more in response to events affecting the market for those types of securities.

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

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 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.

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 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. 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 capital appreciation. 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 stocks. Since the Fund's income level will fluctuate and will likely be small, it is not designed for investors needing 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/ValueFund

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 19.46% (2nd Qtr 09) and the lowest return for a calendar quarter was -26.61% (4th Qtr 08). For the period from January 1, 2014 through December 31, 2014 the cumulative return before sales charges and taxes was 10.59%.

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 Information Illustrates Variability of Returns [Text] rr_PerformanceInformationIllustratesVariabilityOfReturns The bar chart and table below provide some indication of the risks of investing in the Fund by showing changes in the Fund's performance (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.
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/ValueFund
Russell 1000 Value Index (reflects no deduction for fees, expenses or taxes)
 
Risk/Return: rr_RiskReturnAbstract  
1 Year rr_AverageAnnualReturnYear01 13.45%rr_AverageAnnualReturnYear01
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5 Years (or life of class, if less) rr_AverageAnnualReturnYear05 15.42%rr_AverageAnnualReturnYear05
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10 Years rr_AverageAnnualReturnYear10 7.30%rr_AverageAnnualReturnYear10
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Russell 1000 Value Index  (reflects no deduction for fees, expenses or taxes)
 
Risk/Return: rr_RiskReturnAbstract  
5 Years (or life of class, if less) rr_AverageAnnualReturnYear05 19.00%rr_AverageAnnualReturnYear05
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[2]
Class A
 
Risk/Return: rr_RiskReturnAbstract  
Maximum Sales Charge (Load) imposed on purchases (as % of offering price) rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice 5.75%rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice
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Maximum Deferred Sales Charge (Load) (as % of the lower of original offering price or redemption proceeds) rr_MaximumDeferredSalesChargeOverOther none
Management Fees rr_ManagementFeesOverAssets 0.48%rr_ManagementFeesOverAssets
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Distribution and/or Service (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets 0.25%rr_DistributionAndService12b1FeesOverAssets
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Other Expenses rr_OtherExpensesOverAssets 0.23%rr_OtherExpensesOverAssets
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Total Annual Fund Operating Expenses rr_ExpensesOverAssets 0.96%rr_ExpensesOverAssets
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Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 668rr_ExpenseExampleYear01
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Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 865rr_ExpenseExampleYear03
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Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 1,078rr_ExpenseExampleYear05
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Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 1,691rr_ExpenseExampleYear10
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Expense Example, No Redemption, 1 Year rr_ExpenseExampleNoRedemptionYear01 668rr_ExpenseExampleNoRedemptionYear01
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Expense Example, No Redemption, 3 Years rr_ExpenseExampleNoRedemptionYear03 865rr_ExpenseExampleNoRedemptionYear03
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Expense Example, No Redemption, 5 Years rr_ExpenseExampleNoRedemptionYear05 1,078rr_ExpenseExampleNoRedemptionYear05
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Expense Example, No Redemption, 10 Years rr_ExpenseExampleNoRedemptionYear10 1,691rr_ExpenseExampleNoRedemptionYear10
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Annual Return 2005 rr_AnnualReturn2005 6.45%rr_AnnualReturn2005
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Annual Return 2006 rr_AnnualReturn2006 15.79%rr_AnnualReturn2006
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Annual Return 2007 rr_AnnualReturn2007 6.32%rr_AnnualReturn2007
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Annual Return 2008 rr_AnnualReturn2008 (41.69%)rr_AnnualReturn2008
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Annual Return 2009 rr_AnnualReturn2009 33.65%rr_AnnualReturn2009
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Annual Return 2010 rr_AnnualReturn2010 14.70%rr_AnnualReturn2010
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Annual Return 2011 rr_AnnualReturn2011 (4.76%)rr_AnnualReturn2011
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Annual Return 2012 rr_AnnualReturn2012 13.51%rr_AnnualReturn2012
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Annual Return 2013 rr_AnnualReturn2013 30.26%rr_AnnualReturn2013
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Annual Return 2014 rr_AnnualReturn2014 10.59%rr_AnnualReturn2014
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Year to Date Return, Label rr_YearToDateReturnLabel For the period from January 1, 2014 through December 31, 2014 the cumulative return before sales charges and taxes was 10.59%.
Bar Chart, Year to Date Return rr_BarChartYearToDateReturn 10.59%rr_BarChartYearToDateReturn
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Bar Chart, Year to Date Return, Date rr_BarChartYearToDateReturnDate Dec. 31, 2014
Highest Quarterly Return, Label rr_HighestQuarterlyReturnLabel highest return for a calendar quarter was 19.46% (2nd Qtr 09)
Highest Quarterly Return rr_BarChartHighestQuarterlyReturn 19.46%rr_BarChartHighestQuarterlyReturn
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Highest Quarterly Return, Date rr_BarChartHighestQuarterlyReturnDate Jun. 30, 2009
Lowest Quarterly Return, Label rr_LowestQuarterlyReturnLabel lowest return for a calendar quarter was -26.61% (4th Qtr 08)
Lowest Quarterly Return rr_BarChartLowestQuarterlyReturn (26.61%)rr_BarChartLowestQuarterlyReturn
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Lowest Quarterly Return, Date rr_BarChartLowestQuarterlyReturnDate Dec. 31, 2008
1 Year rr_AverageAnnualReturnYear01 4.23%rr_AverageAnnualReturnYear01
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5 Years (or life of class, if less) rr_AverageAnnualReturnYear05 10.98%rr_AverageAnnualReturnYear05
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10 Years rr_AverageAnnualReturnYear10 5.57%rr_AverageAnnualReturnYear10
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Inception Date rr_AverageAnnualReturnInceptionDate Sep. 16, 1985
Class A | Return After Taxes on Distributions
 
Risk/Return: rr_RiskReturnAbstract  
1 Year rr_AverageAnnualReturnYear01 3.64%rr_AverageAnnualReturnYear01
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5 Years (or life of class, if less) rr_AverageAnnualReturnYear05 10.74%rr_AverageAnnualReturnYear05
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10 Years rr_AverageAnnualReturnYear10 5.01%rr_AverageAnnualReturnYear10
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Class A | Return After Taxes on Distributions and Sale of Fund Shares
 
Risk/Return: rr_RiskReturnAbstract  
1 Year rr_AverageAnnualReturnYear01 2.38%rr_AverageAnnualReturnYear01
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5 Years (or life of class, if less) rr_AverageAnnualReturnYear05 8.75%rr_AverageAnnualReturnYear05
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10 Years rr_AverageAnnualReturnYear10 4.37%rr_AverageAnnualReturnYear10
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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%rr_MaximumDeferredSalesChargeOverOther
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Management Fees rr_ManagementFeesOverAssets 0.48%rr_ManagementFeesOverAssets
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Distribution and/or Service (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets 1.00%rr_DistributionAndService12b1FeesOverAssets
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Other Expenses rr_OtherExpensesOverAssets 0.23%rr_OtherExpensesOverAssets
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Total Annual Fund Operating Expenses rr_ExpensesOverAssets 1.71%rr_ExpensesOverAssets
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Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 675rr_ExpenseExampleYear01
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Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 843rr_ExpenseExampleYear03
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/ rr_ProspectusShareClassAxis
= ofivaluefund-20150227_C000020081Member
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 1,136rr_ExpenseExampleYear05
/ dei_LegalEntityAxis
= ofivaluefund-20150227_S000007309Member
/ rr_ProspectusShareClassAxis
= ofivaluefund-20150227_C000020081Member
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 1,650rr_ExpenseExampleYear10
/ dei_LegalEntityAxis
= ofivaluefund-20150227_S000007309Member
/ rr_ProspectusShareClassAxis
= ofivaluefund-20150227_C000020081Member
Expense Example, No Redemption, 1 Year rr_ExpenseExampleNoRedemptionYear01 175rr_ExpenseExampleNoRedemptionYear01
/ dei_LegalEntityAxis
= ofivaluefund-20150227_S000007309Member
/ rr_ProspectusShareClassAxis
= ofivaluefund-20150227_C000020081Member
Expense Example, No Redemption, 3 Years rr_ExpenseExampleNoRedemptionYear03 543rr_ExpenseExampleNoRedemptionYear03
/ dei_LegalEntityAxis
= ofivaluefund-20150227_S000007309Member
/ rr_ProspectusShareClassAxis
= ofivaluefund-20150227_C000020081Member
Expense Example, No Redemption, 5 Years rr_ExpenseExampleNoRedemptionYear05 936rr_ExpenseExampleNoRedemptionYear05
/ dei_LegalEntityAxis
= ofivaluefund-20150227_S000007309Member
/ rr_ProspectusShareClassAxis
= ofivaluefund-20150227_C000020081Member
Expense Example, No Redemption, 10 Years rr_ExpenseExampleNoRedemptionYear10 1,650rr_ExpenseExampleNoRedemptionYear10
/ dei_LegalEntityAxis
= ofivaluefund-20150227_S000007309Member
/ rr_ProspectusShareClassAxis
= ofivaluefund-20150227_C000020081Member
1 Year rr_AverageAnnualReturnYear01 4.75%rr_AverageAnnualReturnYear01
/ dei_LegalEntityAxis
= ofivaluefund-20150227_S000007309Member
/ rr_ProspectusShareClassAxis
= ofivaluefund-20150227_C000020081Member
5 Years (or life of class, if less) rr_AverageAnnualReturnYear05 11.10%rr_AverageAnnualReturnYear05
/ dei_LegalEntityAxis
= ofivaluefund-20150227_S000007309Member
/ rr_ProspectusShareClassAxis
= ofivaluefund-20150227_C000020081Member
10 Years rr_AverageAnnualReturnYear10 5.66%rr_AverageAnnualReturnYear10
/ dei_LegalEntityAxis
= ofivaluefund-20150227_S000007309Member
/ rr_ProspectusShareClassAxis
= ofivaluefund-20150227_C000020081Member
Inception Date rr_AverageAnnualReturnInceptionDate Oct. 02, 1995
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%rr_MaximumDeferredSalesChargeOverOther
/ dei_LegalEntityAxis
= ofivaluefund-20150227_S000007309Member
/ rr_ProspectusShareClassAxis
= ofivaluefund-20150227_C000020082Member
Management Fees rr_ManagementFeesOverAssets 0.48%rr_ManagementFeesOverAssets
/ dei_LegalEntityAxis
= ofivaluefund-20150227_S000007309Member
/ rr_ProspectusShareClassAxis
= ofivaluefund-20150227_C000020082Member
Distribution and/or Service (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets 1.00%rr_DistributionAndService12b1FeesOverAssets
/ dei_LegalEntityAxis
= ofivaluefund-20150227_S000007309Member
/ rr_ProspectusShareClassAxis
= ofivaluefund-20150227_C000020082Member
Other Expenses rr_OtherExpensesOverAssets 0.23%rr_OtherExpensesOverAssets
/ dei_LegalEntityAxis
= ofivaluefund-20150227_S000007309Member
/ rr_ProspectusShareClassAxis
= ofivaluefund-20150227_C000020082Member
Total Annual Fund Operating Expenses rr_ExpensesOverAssets 1.71%rr_ExpensesOverAssets
/ dei_LegalEntityAxis
= ofivaluefund-20150227_S000007309Member
/ rr_ProspectusShareClassAxis
= ofivaluefund-20150227_C000020082Member
Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 275rr_ExpenseExampleYear01
/ dei_LegalEntityAxis
= ofivaluefund-20150227_S000007309Member
/ rr_ProspectusShareClassAxis
= ofivaluefund-20150227_C000020082Member
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 543rr_ExpenseExampleYear03
/ dei_LegalEntityAxis
= ofivaluefund-20150227_S000007309Member
/ rr_ProspectusShareClassAxis
= ofivaluefund-20150227_C000020082Member
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 936rr_ExpenseExampleYear05
/ dei_LegalEntityAxis
= ofivaluefund-20150227_S000007309Member
/ rr_ProspectusShareClassAxis
= ofivaluefund-20150227_C000020082Member
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 2,036rr_ExpenseExampleYear10
/ dei_LegalEntityAxis
= ofivaluefund-20150227_S000007309Member
/ rr_ProspectusShareClassAxis
= ofivaluefund-20150227_C000020082Member
Expense Example, No Redemption, 1 Year rr_ExpenseExampleNoRedemptionYear01 175rr_ExpenseExampleNoRedemptionYear01
/ dei_LegalEntityAxis
= ofivaluefund-20150227_S000007309Member
/ rr_ProspectusShareClassAxis
= ofivaluefund-20150227_C000020082Member
Expense Example, No Redemption, 3 Years rr_ExpenseExampleNoRedemptionYear03 543rr_ExpenseExampleNoRedemptionYear03
/ dei_LegalEntityAxis
= ofivaluefund-20150227_S000007309Member
/ rr_ProspectusShareClassAxis
= ofivaluefund-20150227_C000020082Member
Expense Example, No Redemption, 5 Years rr_ExpenseExampleNoRedemptionYear05 936rr_ExpenseExampleNoRedemptionYear05
/ dei_LegalEntityAxis
= ofivaluefund-20150227_S000007309Member
/ rr_ProspectusShareClassAxis
= ofivaluefund-20150227_C000020082Member
Expense Example, No Redemption, 10 Years rr_ExpenseExampleNoRedemptionYear10 2,036rr_ExpenseExampleNoRedemptionYear10
/ dei_LegalEntityAxis
= ofivaluefund-20150227_S000007309Member
/ rr_ProspectusShareClassAxis
= ofivaluefund-20150227_C000020082Member
1 Year rr_AverageAnnualReturnYear01 8.74%rr_AverageAnnualReturnYear01
/ dei_LegalEntityAxis
= ofivaluefund-20150227_S000007309Member
/ rr_ProspectusShareClassAxis
= ofivaluefund-20150227_C000020082Member
5 Years (or life of class, if less) rr_AverageAnnualReturnYear05 11.46%rr_AverageAnnualReturnYear05
/ dei_LegalEntityAxis
= ofivaluefund-20150227_S000007309Member
/ rr_ProspectusShareClassAxis
= ofivaluefund-20150227_C000020082Member
10 Years rr_AverageAnnualReturnYear10 5.39%rr_AverageAnnualReturnYear10
/ dei_LegalEntityAxis
= ofivaluefund-20150227_S000007309Member
/ rr_ProspectusShareClassAxis
= ofivaluefund-20150227_C000020082Member
Inception Date rr_AverageAnnualReturnInceptionDate May 01, 1996
Class R
 
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 0.48%rr_ManagementFeesOverAssets
/ dei_LegalEntityAxis
= ofivaluefund-20150227_S000007309Member
/ rr_ProspectusShareClassAxis
= ofivaluefund-20150227_C000020083Member
Distribution and/or Service (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets 0.50%rr_DistributionAndService12b1FeesOverAssets
/ dei_LegalEntityAxis
= ofivaluefund-20150227_S000007309Member
/ rr_ProspectusShareClassAxis
= ofivaluefund-20150227_C000020083Member
Other Expenses rr_OtherExpensesOverAssets 0.23%rr_OtherExpensesOverAssets
/ dei_LegalEntityAxis
= ofivaluefund-20150227_S000007309Member
/ rr_ProspectusShareClassAxis
= ofivaluefund-20150227_C000020083Member
Total Annual Fund Operating Expenses rr_ExpensesOverAssets 1.21%rr_ExpensesOverAssets
/ dei_LegalEntityAxis
= ofivaluefund-20150227_S000007309Member
/ rr_ProspectusShareClassAxis
= ofivaluefund-20150227_C000020083Member
Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 124rr_ExpenseExampleYear01
/ dei_LegalEntityAxis
= ofivaluefund-20150227_S000007309Member
/ rr_ProspectusShareClassAxis
= ofivaluefund-20150227_C000020083Member
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 386rr_ExpenseExampleYear03
/ dei_LegalEntityAxis
= ofivaluefund-20150227_S000007309Member
/ rr_ProspectusShareClassAxis
= ofivaluefund-20150227_C000020083Member
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 669rr_ExpenseExampleYear05
/ dei_LegalEntityAxis
= ofivaluefund-20150227_S000007309Member
/ rr_ProspectusShareClassAxis
= ofivaluefund-20150227_C000020083Member
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 1,475rr_ExpenseExampleYear10
/ dei_LegalEntityAxis
= ofivaluefund-20150227_S000007309Member
/ rr_ProspectusShareClassAxis
= ofivaluefund-20150227_C000020083Member
Expense Example, No Redemption, 1 Year rr_ExpenseExampleNoRedemptionYear01 124rr_ExpenseExampleNoRedemptionYear01
/ dei_LegalEntityAxis
= ofivaluefund-20150227_S000007309Member
/ rr_ProspectusShareClassAxis
= ofivaluefund-20150227_C000020083Member
Expense Example, No Redemption, 3 Years rr_ExpenseExampleNoRedemptionYear03 386rr_ExpenseExampleNoRedemptionYear03
/ dei_LegalEntityAxis
= ofivaluefund-20150227_S000007309Member
/ rr_ProspectusShareClassAxis
= ofivaluefund-20150227_C000020083Member
Expense Example, No Redemption, 5 Years rr_ExpenseExampleNoRedemptionYear05 669rr_ExpenseExampleNoRedemptionYear05
/ dei_LegalEntityAxis
= ofivaluefund-20150227_S000007309Member
/ rr_ProspectusShareClassAxis
= ofivaluefund-20150227_C000020083Member
Expense Example, No Redemption, 10 Years rr_ExpenseExampleNoRedemptionYear10 1,475rr_ExpenseExampleNoRedemptionYear10
/ dei_LegalEntityAxis
= ofivaluefund-20150227_S000007309Member
/ rr_ProspectusShareClassAxis
= ofivaluefund-20150227_C000020083Member
1 Year rr_AverageAnnualReturnYear01 9.30%rr_AverageAnnualReturnYear01
/ dei_LegalEntityAxis
= ofivaluefund-20150227_S000007309Member
/ rr_ProspectusShareClassAxis
= ofivaluefund-20150227_C000020083Member
5 Years (or life of class, if less) rr_AverageAnnualReturnYear05 11.98%rr_AverageAnnualReturnYear05
/ dei_LegalEntityAxis
= ofivaluefund-20150227_S000007309Member
/ rr_ProspectusShareClassAxis
= ofivaluefund-20150227_C000020083Member
10 Years rr_AverageAnnualReturnYear10 5.89%rr_AverageAnnualReturnYear10
/ dei_LegalEntityAxis
= ofivaluefund-20150227_S000007309Member
/ rr_ProspectusShareClassAxis
= ofivaluefund-20150227_C000020083Member
Inception Date rr_AverageAnnualReturnInceptionDate Mar. 01, 2001
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 0.48%rr_ManagementFeesOverAssets
/ dei_LegalEntityAxis
= ofivaluefund-20150227_S000007309Member
/ rr_ProspectusShareClassAxis
= ofivaluefund-20150227_C000033091Member
Distribution and/or Service (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets none
Other Expenses rr_OtherExpensesOverAssets 0.23%rr_OtherExpensesOverAssets
/ dei_LegalEntityAxis
= ofivaluefund-20150227_S000007309Member
/ rr_ProspectusShareClassAxis
= ofivaluefund-20150227_C000033091Member
Total Annual Fund Operating Expenses rr_ExpensesOverAssets 0.71%rr_ExpensesOverAssets
/ dei_LegalEntityAxis
= ofivaluefund-20150227_S000007309Member
/ rr_ProspectusShareClassAxis
= ofivaluefund-20150227_C000033091Member
Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 73rr_ExpenseExampleYear01
/ dei_LegalEntityAxis
= ofivaluefund-20150227_S000007309Member
/ rr_ProspectusShareClassAxis
= ofivaluefund-20150227_C000033091Member
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 228rr_ExpenseExampleYear03
/ dei_LegalEntityAxis
= ofivaluefund-20150227_S000007309Member
/ rr_ProspectusShareClassAxis
= ofivaluefund-20150227_C000033091Member
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 396rr_ExpenseExampleYear05
/ dei_LegalEntityAxis
= ofivaluefund-20150227_S000007309Member
/ rr_ProspectusShareClassAxis
= ofivaluefund-20150227_C000033091Member
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 886rr_ExpenseExampleYear10
/ dei_LegalEntityAxis
= ofivaluefund-20150227_S000007309Member
/ rr_ProspectusShareClassAxis
= ofivaluefund-20150227_C000033091Member
Expense Example, No Redemption, 1 Year rr_ExpenseExampleNoRedemptionYear01 73rr_ExpenseExampleNoRedemptionYear01
/ dei_LegalEntityAxis
= ofivaluefund-20150227_S000007309Member
/ rr_ProspectusShareClassAxis
= ofivaluefund-20150227_C000033091Member
Expense Example, No Redemption, 3 Years rr_ExpenseExampleNoRedemptionYear03 228rr_ExpenseExampleNoRedemptionYear03
/ dei_LegalEntityAxis
= ofivaluefund-20150227_S000007309Member
/ rr_ProspectusShareClassAxis
= ofivaluefund-20150227_C000033091Member
Expense Example, No Redemption, 5 Years rr_ExpenseExampleNoRedemptionYear05 396rr_ExpenseExampleNoRedemptionYear05
/ dei_LegalEntityAxis
= ofivaluefund-20150227_S000007309Member
/ rr_ProspectusShareClassAxis
= ofivaluefund-20150227_C000033091Member
Expense Example, No Redemption, 10 Years rr_ExpenseExampleNoRedemptionYear10 886rr_ExpenseExampleNoRedemptionYear10
/ dei_LegalEntityAxis
= ofivaluefund-20150227_S000007309Member
/ rr_ProspectusShareClassAxis
= ofivaluefund-20150227_C000033091Member
1 Year rr_AverageAnnualReturnYear01 10.87%rr_AverageAnnualReturnYear01
/ dei_LegalEntityAxis
= ofivaluefund-20150227_S000007309Member
/ rr_ProspectusShareClassAxis
= ofivaluefund-20150227_C000033091Member
5 Years (or life of class, if less) rr_AverageAnnualReturnYear05 12.71%rr_AverageAnnualReturnYear05
/ dei_LegalEntityAxis
= ofivaluefund-20150227_S000007309Member
/ rr_ProspectusShareClassAxis
= ofivaluefund-20150227_C000033091Member
10 Years rr_AverageAnnualReturnYear10 6.58%rr_AverageAnnualReturnYear10
/ dei_LegalEntityAxis
= ofivaluefund-20150227_S000007309Member
/ rr_ProspectusShareClassAxis
= ofivaluefund-20150227_C000033091Member
Inception Date rr_AverageAnnualReturnInceptionDate Dec. 16, 1996
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 0.48%rr_ManagementFeesOverAssets
/ dei_LegalEntityAxis
= ofivaluefund-20150227_S000007309Member
/ rr_ProspectusShareClassAxis
= ofivaluefund-20150227_C000110989Member
Distribution and/or Service (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets none
Other Expenses rr_OtherExpensesOverAssets 0.04%rr_OtherExpensesOverAssets
/ dei_LegalEntityAxis
= ofivaluefund-20150227_S000007309Member
/ rr_ProspectusShareClassAxis
= ofivaluefund-20150227_C000110989Member
Total Annual Fund Operating Expenses rr_ExpensesOverAssets 0.52%rr_ExpensesOverAssets
/ dei_LegalEntityAxis
= ofivaluefund-20150227_S000007309Member
/ rr_ProspectusShareClassAxis
= ofivaluefund-20150227_C000110989Member
Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 53rr_ExpenseExampleYear01
/ dei_LegalEntityAxis
= ofivaluefund-20150227_S000007309Member
/ rr_ProspectusShareClassAxis
= ofivaluefund-20150227_C000110989Member
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 167rr_ExpenseExampleYear03
/ dei_LegalEntityAxis
= ofivaluefund-20150227_S000007309Member
/ rr_ProspectusShareClassAxis
= ofivaluefund-20150227_C000110989Member
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 291rr_ExpenseExampleYear05
/ dei_LegalEntityAxis
= ofivaluefund-20150227_S000007309Member
/ rr_ProspectusShareClassAxis
= ofivaluefund-20150227_C000110989Member
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 654rr_ExpenseExampleYear10
/ dei_LegalEntityAxis
= ofivaluefund-20150227_S000007309Member
/ rr_ProspectusShareClassAxis
= ofivaluefund-20150227_C000110989Member
Expense Example, No Redemption, 1 Year rr_ExpenseExampleNoRedemptionYear01 53rr_ExpenseExampleNoRedemptionYear01
/ dei_LegalEntityAxis
= ofivaluefund-20150227_S000007309Member
/ rr_ProspectusShareClassAxis
= ofivaluefund-20150227_C000110989Member
Expense Example, No Redemption, 3 Years rr_ExpenseExampleNoRedemptionYear03 167rr_ExpenseExampleNoRedemptionYear03
/ dei_LegalEntityAxis
= ofivaluefund-20150227_S000007309Member
/ rr_ProspectusShareClassAxis
= ofivaluefund-20150227_C000110989Member
Expense Example, No Redemption, 5 Years rr_ExpenseExampleNoRedemptionYear05 291rr_ExpenseExampleNoRedemptionYear05
/ dei_LegalEntityAxis
= ofivaluefund-20150227_S000007309Member
/ rr_ProspectusShareClassAxis
= ofivaluefund-20150227_C000110989Member
Expense Example, No Redemption, 10 Years rr_ExpenseExampleNoRedemptionYear10 $ 654rr_ExpenseExampleNoRedemptionYear10
/ dei_LegalEntityAxis
= ofivaluefund-20150227_S000007309Member
/ rr_ProspectusShareClassAxis
= ofivaluefund-20150227_C000110989Member
1 Year rr_AverageAnnualReturnYear01 11.07%rr_AverageAnnualReturnYear01
/ dei_LegalEntityAxis
= ofivaluefund-20150227_S000007309Member
/ rr_ProspectusShareClassAxis
= ofivaluefund-20150227_C000110989Member
5 Years (or life of class, if less) rr_AverageAnnualReturnYear05 16.16%rr_AverageAnnualReturnYear05
/ dei_LegalEntityAxis
= ofivaluefund-20150227_S000007309Member
/ rr_ProspectusShareClassAxis
= ofivaluefund-20150227_C000110989Member
10 Years rr_AverageAnnualReturnYear10   
Inception Date rr_AverageAnnualReturnInceptionDate Feb. 28, 2012
[1] Expenses have been restated to reflect current fees.
[2] As of 02/29/2012