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Label Element Value
Risk/Return: rr_RiskReturnAbstract  
Risk/Return [Heading] rr_RiskReturnHeading LORD ABBETT AFFILIATED FUND INC
Objective [Heading] rr_ObjectiveHeading INVESTMENT OBJECTIVE
Objective, Primary [Text Block] rr_ObjectivePrimaryTextBlock

The Fund’s investment objective is long-term growth of capital and income without excessive fluctuations in market value.

Expense [Heading] rr_ExpenseHeading FEES AND EXPENSES
Expense Narrative [Text Block] rr_ExpenseNarrativeTextBlock

This table describes the fees and expenses that you may pay if you buy and hold shares of the Fund. You may qualify for sales charge discounts if you and certain members of your family invest, or agree to invest in the future, at least $50,000 in the Lord Abbett Family of Funds. More information about these and other discounts is available from your financial professional and in “Sales Charge Reductions and Waivers” on page 24 of the prospectus and “Purchases, Redemptions, Pricing, and Payments to Dealers” on page 8-1 of the statement of additional information (“SAI”).

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)
Portfolio Turnover [Heading] rr_PortfolioTurnoverHeading Portfolio Turnover.
Portfolio Turnover [Text Block] rr_PortfolioTurnoverTextBlock

The Fund pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover rate may indicate higher transaction costs 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 14.26% of the average value of its portfolio.

Portfolio Turnover, Rate rr_PortfolioTurnoverRate 14.26%
Expense Breakpoint Discounts [Text] rr_ExpenseBreakpointDiscounts You may qualify for sales charge discounts if you and certain members of your family invest, or agree to invest in the future, at least $50,000 in the Lord Abbett Family of Funds.
Expense Breakpoint, Minimum Investment Required [Amount] rr_ExpenseBreakpointMinimumInvestmentRequiredAmount $ 50,000
Expense Example [Heading] rr_ExpenseExampleHeading Example
Expense Example Narrative [Text Block] rr_ExpenseExampleNarrativeTextBlock

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 the Fund at the maximum sales charge, if any, for the time periods indicated and then redeem all of your shares at the end of those periods. The example also assumes that your investment has a 5% return each year, that dividends and distributions are reinvested, and that the Fund’s operating expenses remain the same. The example assumes a deduction of the applicable contingent deferred sales charge (“CDSC”) for the one-year, three-year, and five- year periods for Class B shares and for the one-year period for Class C shares. Class B shares automatically convert to Class A shares after approximately eight years. The expense example for Class B shares for the ten-year period reflects the conversion to Class A shares. The first example assumes that you redeem all of your shares at the end of the periods. Although your actual costs may be higher or lower, based on these assumptions, your costs (including any applicable CDSC) would be as shown below. The second example assumes that you do not redeem and instead keep your shares.

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
Strategy [Heading] rr_StrategyHeading PRINCIPAL INVESTMENT STRATEGIES
Strategy Narrative [Text Block] rr_StrategyNarrativeTextBlock

To pursue its objective, the Fund will invest, under normal market conditions, at least 80% of its net assets in equity securities of large companies. The Fund invests principally in large, established U.S. and multinational companies that the portfolio manager believes are undervalued.


The Fund may invest in U.S. and foreign (which may include emerging market) companies. Foreign companies may be traded on U.S. or non-U.S. securities exchanges, may be denominated in the U.S. dollar or other currencies, and may include American Depositary Receipts (“ADRs”). Although the Fund is diversified across many industries and sectors, its assets may, from time to time, be overweighted or underweighted to certain industries and sectors relative to its benchmark index. The Fund’s investments primarily include the following types of securities and other financial instruments:


  • Equity securities of large companies. The Fund may invest in any security that represents equity ownership in a company. Currently, the Fund invests in equity securities consisting of common stocks, preferred stocks, and equity interests in trusts (including real estate investment trusts), partnerships, joint ventures, and limited liability companies.

  • Large companies having a market capitalization at the time of purchase that falls within the market capitalization range of companies in the Russell 1000® Index.

  • Value companies that portfolio management believes to be underpriced or undervalued according to certain financial measurements of intrinsic worth or business prospects and have the potential for capital appreciation.


Consistent with its investment objective and policies, the Fund selectively may invest in derivatives. Currently, the Fund expects to invest in derivatives consisting principally of futures and options. The Fund may use derivatives for risk management purposes, including to hedge against a decline in the value of certain investments and to adjust the investment characteristics of its portfolio. The Fund also may invest in derivatives for “speculative” purposes to increase its investment return or income. For example, the Fund may manage cash by investing in futures or other derivatives that provide efficient short-term investment exposure to broad equity markets.


The Fund generally will sell a security when the Fund believes the security is less likely to benefit from the current market and economic environment, shows signs of deteriorating fundamentals, or has reached its valuation target, among other reasons. The Fund seeks to remain fully invested in accordance with its investment objective; however, in response to adverse economic, market or other unfavorable conditions, the Fund may invest its assets in a temporary defensive manner.

Risk [Heading] rr_RiskHeading PRINCIPAL RISKS
Risk Narrative [Text Block] rr_RiskNarrativeTextBlock

As with any investment in a mutual fund, investing in the Fund involves risk, including the risk that you may receive little or no return on your investment. When you redeem your shares, they may be worth more or less than what you paid for them, which means that you may lose a portion or all of the money you invested in the Fund. The principal risks of investing in the Fund, which could adversely affect its performance, include:


  • Portfolio Management Risk: If the strategies used and securities selected by the Fund’s portfolio management fail to produce the intended result, the Fund may suffer losses or underperform other funds with the same investment objective or strategies, even in a rising market.

  • Equity Risk: Common stocks and other equity securities, as well as equity-like securities such as convertible bonds, may experience significant volatility. Such securities may fall sharply in response to adverse events affecting overall markets, a particular industry or sector, or an individual company’s financial condition.

  • Large Company Risk: As compared to smaller successful companies, larger companies may be less able to respond quickly to certain market developments and may have slower rates of growth.

  • Value Investing Risk: The prices of value stocks may lag the stock market for long periods of time if the market fails to recognize the company’s intrinsic worth.

  • Foreign Company Risk: The Fund’s investments in foreign (including emerging market) companies and in U.S. companies with economic ties to foreign markets generally involve special risks that can increase the likelihood that the Fund will lose money. For example, as compared with companies organized and operated in the U.S., these companies may be more vulnerable to economic, political, and social instability and subject to less government supervision, inadequate regulatory and accounting standards, and foreign taxes. In addition, the securities of foreign companies also may be subject to inadequate exchange control regulations, higher transaction and other costs, reduced liquidity, and delays in settlement to the extent that such securities are traded on non-U.S. exchanges or markets. Emerging market securities generally are more volatile than other foreign securities, and are subject to greater liquidity, regulatory, and political risks.

  • Industry/Sector Risk: To the extent the Fund overweights a single market sector or industry relative to its benchmark index, it can accumulate relatively large positions in a single issuer, industry, or sector. As a result, the Fund’s performance may be tied more directly to the success or failure of a relatively smaller or less diversified group of portfolio holdings.

  • Derivatives Risk: Derivatives are subject to certain risks, including the risk that the value of the derivative may not correlate with the value of the underlying security, rate, or index in the manner anticipated by portfolio management. Derivatives may be more sensitive to changes in economic or market conditions and may become illiquid. Derivatives are subject to leverage risk, which may increase the Fund’s volatility, and counterparty risk, which means that the counterparty may fail to perform its obligations under the derivative contract.


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. For more information on the principal risks of the Fund, please see the “More Information About the Fund – Principal Risks” section in the prospectus.

Risk Lose Money [Text] rr_RiskLoseMoney As with any investment in a mutual fund, investing in the Fund involves risk, including the risk that you may receive little or no return on your investment. When you redeem your shares, they may be worth more or less than what you paid for them, which means that you may lose a portion or all of the money you invested in the Fund.
Risk Not Insured Depository Institution [Text] rr_RiskNotInsuredDepositoryInstitution An investment in the Fund is not a deposit of any bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.
Bar Chart and Performance Table [Heading] rr_BarChartAndPerformanceTableHeading PERFORMANCE
Performance Narrative [Text Block] rr_PerformanceNarrativeTextBlock

The bar chart and table below provide some indication of the risks of investing in the Fund by illustrating the variability of the Fund’s returns. Each assumes reinvestment of dividends and distributions. The Fund’s past 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 illustrating the variability of the Fund's returns.
Performance Availability Phone [Text] rr_PerformanceAvailabilityPhone 888-522-2388
Performance Availability Website Address [Text] rr_PerformanceAvailabilityWebSiteAddress www.lordabbett.com
Performance Past Does Not Indicate Future [Text] rr_PerformancePastDoesNotIndicateFuture The Fund's past performance, before and after taxes, is not necessarily an indication of how the Fund will perform in the future.
Bar Chart [Heading] rr_BarChartHeading Bar Chart (per calendar year) - Class A Shares
Bar Chart Narrative [Text Block] rr_BarChartNarrativeTextBlock

The bar chart shows changes in the performance of the Fund's Class A shares from calendar year to calendar year. This chart does not reflect the sales charge applicable to Class A shares. If the sales charge were reflected, returns would be lower. Performance for the Fund's other share classes will vary due to the different expenses each class bears. Updated performance information is available at www.lordabbett.com or by calling 888-522-2388.


Bar Chart Does Not Reflect Sales Loads [Text] rr_BarChartDoesNotReflectSalesLoads This chart does not reflect the sales charge applicable to Class A shares. If the sales charge were reflected, returns would be lower.
Bar Chart Closing [Text Block] rr_BarChartClosingTextBlock

 

 

 

Best Quarter 2nd Q ’09 +18.76%

 

Worst Quarter 3rd Q ’11 -20.73%

Highest Quarterly Return, Label rr_HighestQuarterlyReturnLabel Best Quarter
Highest Quarterly Return, Date rr_BarChartHighestQuarterlyReturnDate Jun. 30, 2009
Highest Quarterly Return rr_BarChartHighestQuarterlyReturn 18.76%
Lowest Quarterly Return, Label rr_LowestQuarterlyReturnLabel Worst Quarter
Lowest Quarterly Return, Date rr_BarChartLowestQuarterlyReturnDate Sep. 30, 2011
Lowest Quarterly Return rr_BarChartLowestQuarterlyReturn (20.73%)
Performance Table Heading rr_PerformanceTableHeading Average Annual Total Returns (for the periods ended December 31, 2012)
Performance Table Does Reflect Sales Loads rr_PerformanceTableDoesReflectSalesLoads The Fund's average annual total returns include applicable sales charges.
Index No Deduction for Fees, Expenses, Taxes [Text] rr_IndexNoDeductionForFeesExpensesTaxes (reflects no deduction for fees, expenses, or taxes)
Performance Table Uses Highest Federal Rate rr_PerformanceTableUsesHighestFederalRate The after-tax returns of Class A shares included in the table below are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes.
Performance Table Not Relevant to Tax Deferred rr_PerformanceTableNotRelevantToTaxDeferred The 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 ("IRAs").
Performance Table One Class of after Tax Shown [Text] rr_PerformanceTableOneClassOfAfterTaxShown After-tax returns for other share classes are not shown in the table and will vary from those shown for Class A shares.
Performance Table Explanation after Tax Higher rr_PerformanceTableExplanationAfterTaxHigher In some cases, the return after taxes on distributions and sale of Fund shares may exceed the return before taxes due to a tax benefit resulting from realized losses on a sale of Fund shares at the end of the period that is used to offset other gains.
Performance Table Narrative rr_PerformanceTableNarrativeTextBlock

The table below shows how the Fund’s average annual total returns compare to the returns of securities market indices with investment characteristics similar to those of the Fund. The Fund’s average annual total returns include applicable sales charges.


The after-tax returns of Class A shares included in the table below are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. In some cases, the return after taxes on distributions and sale of Fund shares may exceed the return before taxes due to a tax benefit resulting from realized losses on a sale of Fund shares at the end of the period that is used to offset other gains. Actual after-tax returns depend on an investor’s tax situation and may differ from those shown. The 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 (“IRAs”). After-tax returns for other share classes are not shown in the table and will vary from those shown for Class A shares.

Russell 1000® Value Index (reflects no deduction for fees, expenses, or taxes)
  
Risk/Return: rr_RiskReturnAbstract  
AverageAnnualReturnYear01 rr_AverageAnnualReturnYear01 17.51%
AverageAnnualReturnYear05 rr_AverageAnnualReturnYear05 0.59%
AverageAnnualReturnYear10 rr_AverageAnnualReturnYear10 7.38%
AverageAnnualReturnSinceInception rr_AverageAnnualReturnSinceInception (0.57%)
AverageAnnualReturnInceptionDate rr_AverageAnnualReturnInceptionDate Sep. 28, 2007
S&P 500® Index (reflects no deduction for fees, expenses, or taxes)
  
Risk/Return: rr_RiskReturnAbstract  
AverageAnnualReturnYear01 rr_AverageAnnualReturnYear01 16.00%
AverageAnnualReturnYear05 rr_AverageAnnualReturnYear05 1.66%
AverageAnnualReturnYear10 rr_AverageAnnualReturnYear10 7.10%
AverageAnnualReturnSinceInception rr_AverageAnnualReturnSinceInception 0.93%
AverageAnnualReturnInceptionDate rr_AverageAnnualReturnInceptionDate Sep. 28, 2007
S&P 500® Value Index (reflects no deduction for fees, expenses, or taxes)
  
Risk/Return: rr_RiskReturnAbstract  
AverageAnnualReturnYear01 rr_AverageAnnualReturnYear01 17.68%
AverageAnnualReturnYear05 rr_AverageAnnualReturnYear05 (0.15%)
AverageAnnualReturnYear10 rr_AverageAnnualReturnYear10 7.04%
AverageAnnualReturnSinceInception rr_AverageAnnualReturnSinceInception (1.18%)
AverageAnnualReturnInceptionDate rr_AverageAnnualReturnInceptionDate Sep. 28, 2007
Class A
  
Risk/Return: rr_RiskReturnAbstract  
Maximum Sales Charge (Load) Imposed on Purchases (as a percentage of offering price) rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice 5.75%
Maximum Deferred Sales Charge (Load) (as a percentage of offering price or redemption proceeds, whichever is lower) rr_MaximumDeferredSalesChargeOverOther none [1]
Management Fees rr_ManagementFeesOverAssets 0.31%
Distribution and Service (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets 0.35%
Other Expenses rr_OtherExpensesOverAssets 0.19%
Total Annual Fund Operating Expenses rr_ExpensesOverAssets 0.85%
Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 657
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 831
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 1,019
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 1,564
Expense Example, No Redemption, 1 Year rr_ExpenseExampleNoRedemptionYear01 657
Expense Example, No Redemption, 3 Years rr_ExpenseExampleNoRedemptionYear03 831
Expense Example, No Redemption, 5 Years rr_ExpenseExampleNoRedemptionYear05 1,019
Expense Example, No Redemption, 10 Years rr_ExpenseExampleNoRedemptionYear10 1,564
Annual Return 2003 rr_AnnualReturn2003 30.89%
Annual Return 2004 rr_AnnualReturn2004 12.60%
Annual Return 2005 rr_AnnualReturn2005 3.33%
Annual Return 2006 rr_AnnualReturn2006 17.61%
Annual Return 2007 rr_AnnualReturn2007 3.66%
Annual Return 2008 rr_AnnualReturn2008 (37.13%)
Annual Return 2009 rr_AnnualReturn2009 19.39%
Annual Return 2010 rr_AnnualReturn2010 14.30%
Annual Return 2011 rr_AnnualReturn2011 (7.84%)
Annual Return 2012 rr_AnnualReturn2012 15.90%
AverageAnnualReturnYear01 rr_AverageAnnualReturnYear01 9.26%
AverageAnnualReturnYear05 rr_AverageAnnualReturnYear05 (2.89%)
AverageAnnualReturnYear10 rr_AverageAnnualReturnYear10 4.84%
Class A | After Taxes on Distributions
  
Risk/Return: rr_RiskReturnAbstract  
AverageAnnualReturnYear01 rr_AverageAnnualReturnYear01 9.00%
AverageAnnualReturnYear05 rr_AverageAnnualReturnYear05 (3.07%)
AverageAnnualReturnYear10 rr_AverageAnnualReturnYear10 4.23%
Class A | After Taxes on Distributions and Sales
  
Risk/Return: rr_RiskReturnAbstract  
AverageAnnualReturnYear01 rr_AverageAnnualReturnYear01 6.35%
AverageAnnualReturnYear05 rr_AverageAnnualReturnYear05 (2.45%)
AverageAnnualReturnYear10 rr_AverageAnnualReturnYear10 4.20%
Class B
  
Risk/Return: rr_RiskReturnAbstract  
Maximum Sales Charge (Load) Imposed on Purchases (as a percentage of offering price) rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice none
Maximum Deferred Sales Charge (Load) (as a percentage of offering price or redemption proceeds, whichever is lower) rr_MaximumDeferredSalesChargeOverOther 5.00%
Management Fees rr_ManagementFeesOverAssets 0.31%
Distribution and Service (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets 1.00%
Other Expenses rr_OtherExpensesOverAssets 0.19%
Total Annual Fund Operating Expenses rr_ExpensesOverAssets 1.50%
Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 653
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 774
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 1,018
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 1,615
Expense Example, No Redemption, 1 Year rr_ExpenseExampleNoRedemptionYear01 153
Expense Example, No Redemption, 3 Years rr_ExpenseExampleNoRedemptionYear03 474
Expense Example, No Redemption, 5 Years rr_ExpenseExampleNoRedemptionYear05 818
Expense Example, No Redemption, 10 Years rr_ExpenseExampleNoRedemptionYear10 1,615
AverageAnnualReturnYear01 rr_AverageAnnualReturnYear01 10.11%
AverageAnnualReturnYear05 rr_AverageAnnualReturnYear05 (2.76%)
AverageAnnualReturnYear10 rr_AverageAnnualReturnYear10 4.91%
Class C
  
Risk/Return: rr_RiskReturnAbstract  
Maximum Sales Charge (Load) Imposed on Purchases (as a percentage of offering price) rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice none
Maximum Deferred Sales Charge (Load) (as a percentage of offering price or redemption proceeds, whichever is lower) rr_MaximumDeferredSalesChargeOverOther 1.00% [2]
Management Fees rr_ManagementFeesOverAssets 0.31%
Distribution and Service (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets 1.00%
Other Expenses rr_OtherExpensesOverAssets 0.19%
Total Annual Fund Operating Expenses rr_ExpensesOverAssets 1.50%
Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 253
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 474
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 818
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 1,791
Expense Example, No Redemption, 1 Year rr_ExpenseExampleNoRedemptionYear01 153
Expense Example, No Redemption, 3 Years rr_ExpenseExampleNoRedemptionYear03 474
Expense Example, No Redemption, 5 Years rr_ExpenseExampleNoRedemptionYear05 818
Expense Example, No Redemption, 10 Years rr_ExpenseExampleNoRedemptionYear10 1,791
AverageAnnualReturnYear01 rr_AverageAnnualReturnYear01 14.14%
AverageAnnualReturnYear05 rr_AverageAnnualReturnYear05 (2.38%)
AverageAnnualReturnYear10 rr_AverageAnnualReturnYear10 4.77%
Class P
  
Risk/Return: rr_RiskReturnAbstract  
Maximum Sales Charge (Load) Imposed on Purchases (as a percentage of offering price) rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice none
Maximum Deferred Sales Charge (Load) (as a percentage of offering price or redemption proceeds, whichever is lower) rr_MaximumDeferredSalesChargeOverOther none
Management Fees rr_ManagementFeesOverAssets 0.31%
Distribution and Service (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets 0.45%
Other Expenses rr_OtherExpensesOverAssets 0.19%
Total Annual Fund Operating Expenses rr_ExpensesOverAssets 0.95% [3]
Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 97
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 303
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 525
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 1,166
Expense Example, No Redemption, 1 Year rr_ExpenseExampleNoRedemptionYear01 97
Expense Example, No Redemption, 3 Years rr_ExpenseExampleNoRedemptionYear03 303
Expense Example, No Redemption, 5 Years rr_ExpenseExampleNoRedemptionYear05 525
Expense Example, No Redemption, 10 Years rr_ExpenseExampleNoRedemptionYear10 1,166
AverageAnnualReturnYear01 rr_AverageAnnualReturnYear01 15.81%
AverageAnnualReturnYear05 rr_AverageAnnualReturnYear05 (1.81%)
AverageAnnualReturnYear10 rr_AverageAnnualReturnYear10 5.36%
Class I
  
Risk/Return: rr_RiskReturnAbstract  
Maximum Sales Charge (Load) Imposed on Purchases (as a percentage of offering price) rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice none
Maximum Deferred Sales Charge (Load) (as a percentage of offering price or redemption proceeds, whichever is lower) rr_MaximumDeferredSalesChargeOverOther none
Management Fees rr_ManagementFeesOverAssets 0.31%
Distribution and Service (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets none
Other Expenses rr_OtherExpensesOverAssets 0.19%
Total Annual Fund Operating Expenses rr_ExpensesOverAssets 0.50%
Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 51
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 160
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 280
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 628
Expense Example, No Redemption, 1 Year rr_ExpenseExampleNoRedemptionYear01 51
Expense Example, No Redemption, 3 Years rr_ExpenseExampleNoRedemptionYear03 160
Expense Example, No Redemption, 5 Years rr_ExpenseExampleNoRedemptionYear05 280
Expense Example, No Redemption, 10 Years rr_ExpenseExampleNoRedemptionYear10 628
AverageAnnualReturnYear01 rr_AverageAnnualReturnYear01 16.25%
AverageAnnualReturnYear05 rr_AverageAnnualReturnYear05 (1.40%)
AverageAnnualReturnYear10 rr_AverageAnnualReturnYear10 5.81%
Class F
  
Risk/Return: rr_RiskReturnAbstract  
Maximum Sales Charge (Load) Imposed on Purchases (as a percentage of offering price) rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice none
Maximum Deferred Sales Charge (Load) (as a percentage of offering price or redemption proceeds, whichever is lower) rr_MaximumDeferredSalesChargeOverOther none
Management Fees rr_ManagementFeesOverAssets 0.31%
Distribution and Service (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets 0.10%
Other Expenses rr_OtherExpensesOverAssets 0.19%
Total Annual Fund Operating Expenses rr_ExpensesOverAssets 0.60%
Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 61
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 192
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 335
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 750
Expense Example, No Redemption, 1 Year rr_ExpenseExampleNoRedemptionYear01 61
Expense Example, No Redemption, 3 Years rr_ExpenseExampleNoRedemptionYear03 192
Expense Example, No Redemption, 5 Years rr_ExpenseExampleNoRedemptionYear05 335
Expense Example, No Redemption, 10 Years rr_ExpenseExampleNoRedemptionYear10 750
AverageAnnualReturnYear01 rr_AverageAnnualReturnYear01 16.18%
AverageAnnualReturnYear05 rr_AverageAnnualReturnYear05 (1.50%)
AverageAnnualReturnSinceInception rr_AverageAnnualReturnSinceInception (2.08%)
AverageAnnualReturnInceptionDate rr_AverageAnnualReturnInceptionDate Sep. 28, 2007
Class R2
  
Risk/Return: rr_RiskReturnAbstract  
Maximum Sales Charge (Load) Imposed on Purchases (as a percentage of offering price) rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice none
Maximum Deferred Sales Charge (Load) (as a percentage of offering price or redemption proceeds, whichever is lower) rr_MaximumDeferredSalesChargeOverOther none
Management Fees rr_ManagementFeesOverAssets 0.31%
Distribution and Service (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets 0.60%
Other Expenses rr_OtherExpensesOverAssets 0.19%
Total Annual Fund Operating Expenses rr_ExpensesOverAssets 1.10%
Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 112
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 350
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 606
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 1,340
Expense Example, No Redemption, 1 Year rr_ExpenseExampleNoRedemptionYear01 112
Expense Example, No Redemption, 3 Years rr_ExpenseExampleNoRedemptionYear03 350
Expense Example, No Redemption, 5 Years rr_ExpenseExampleNoRedemptionYear05 606
Expense Example, No Redemption, 10 Years rr_ExpenseExampleNoRedemptionYear10 1,340
AverageAnnualReturnYear01 rr_AverageAnnualReturnYear01 15.65%
AverageAnnualReturnYear05 rr_AverageAnnualReturnYear05 (1.99%)
AverageAnnualReturnSinceInception rr_AverageAnnualReturnSinceInception (2.58%)
AverageAnnualReturnInceptionDate rr_AverageAnnualReturnInceptionDate Sep. 28, 2007
Class R3
  
Risk/Return: rr_RiskReturnAbstract  
Maximum Sales Charge (Load) Imposed on Purchases (as a percentage of offering price) rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice none
Maximum Deferred Sales Charge (Load) (as a percentage of offering price or redemption proceeds, whichever is lower) rr_MaximumDeferredSalesChargeOverOther none
Management Fees rr_ManagementFeesOverAssets 0.31%
Distribution and Service (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets 0.50%
Other Expenses rr_OtherExpensesOverAssets 0.19%
Total Annual Fund Operating Expenses rr_ExpensesOverAssets 1.00%
Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 102
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 318
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 552
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 1,225
Expense Example, No Redemption, 1 Year rr_ExpenseExampleNoRedemptionYear01 102
Expense Example, No Redemption, 3 Years rr_ExpenseExampleNoRedemptionYear03 318
Expense Example, No Redemption, 5 Years rr_ExpenseExampleNoRedemptionYear05 552
Expense Example, No Redemption, 10 Years rr_ExpenseExampleNoRedemptionYear10 $ 1,225
AverageAnnualReturnYear01 rr_AverageAnnualReturnYear01 15.75%
AverageAnnualReturnYear05 rr_AverageAnnualReturnYear05 (1.89%)
AverageAnnualReturnSinceInception rr_AverageAnnualReturnSinceInception (2.47%)
AverageAnnualReturnInceptionDate rr_AverageAnnualReturnInceptionDate Sep. 28, 2007
[1] A contingent deferred sales charge ("CDSC") of 1.00% may be assessed on certain Class A shares purchased or acquired without a sales charge if they are redeemed before the first day of the month of the one-year anniversary of the purchase.
[2] A CDSC of 1.00% may be assessed on Class C shares if they are redeemed before the first anniversary of their purchase.
[3] This amount has been updated from fiscal year amounts to reflect current fees and expenses.