Objective, Primary [Text Block]

rr_RiskReturnAbstract

Risk/Return [Heading]

rr_RiskReturnHeading

Small-Cap Value Series

Objective [Heading]

rr_ObjectiveHeading

INVESTMENT OBJECTIVE

rr_ObjectivePrimaryTextBlock

The Fund’s investment objective is long-term capital appreciation.

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 69 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 28.91% of the average value of its portfolio.

Portfolio Turnover, Rate

rr_PortfolioTurnoverRate

28.91%

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, under normal market conditions, the Fund invests at least 80% of its net assets, plus the amount of any borrowings for investment purposes, in equity securities of small companies. The Fund invests principally in small U.S. companies that portfolio management 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 and may include American Depositary Receipts (“ADRs”). The Fund’s investments primarily include the following types of securities and other financial instruments:

Equity securities of small companies. The Fund may invest in any security that represents equity ownership in a company. Currently, the Fund invests in equity securities consisting principally of common stocks, preferred stocks, and equity interests in trusts (including real estate investment trusts), partnerships, joint ventures, and limited liability companies.
Small companies having a market capitalization at the time of purchase that falls within the market capitalization range of companies in the Russell 2000^® 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, forwards, options, and swaps. 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.
Small Company Risk: Securities of small companies generally involve greater risks than investments in larger companies. Small companies may have limited management experience or depth, limited access to capital, or limited products or services, or operate in markets that have not yet been established. Small company securities tend to be more volatile and less liquid than equity securities of larger companies.
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. Because the Fund’s limit on foreign securities focuses on where the security is principally traded rather than where the issuer is organized and/or operated, the percentage of the Fund’s assets that is exposed to foreign market risks may exceed the percentage of the Fund’s assets that the Fund considers to represent foreign securities. Emerging market securities generally are more volatile than other foreign securities, and are subject to greater liquidity, regulatory, and political risks.
Derivatives Risk: Derivatives can increase the Fund’s volatility and/or reduce the Fund’s returns. 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.
Real Estate Risk: An investment in a REIT generally is subject to the risks that impact the value of the underlying properties or mortgages of the REIT. These risks include loss to casualty or condemnation, and changes in supply and demand, interest rates, zoning laws, regulatory limitations on rents, property taxes, and operating expenses. Other factors that may adversely affect REITs include poor performance by management of the REIT, changes to the tax laws, or failure by the REIT to qualify for tax-free distribution of income.
Industry/Sector Risk: To the extent that the Fund emphasizes a particular industry or sector, events affecting that industry or sector (such as government regulations, resource availability or economic developments) will impact the Fund’s performance to a greater degree than events affecting other industries or sectors.

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 Funds – Principal Risks” section in the prospectus.

Risk Lose Money [Text]

rr_RiskLoseMoney

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 4th Q ’11 +19.73%		Worst Quarter 3rd Q ’11 -24.62%

Highest Quarterly Return, Label

rr_HighestQuarterlyReturnLabel

Best Quarter

Highest Quarterly Return, Date

rr_BarChartHighestQuarterlyReturnDate

Dec. 31, 2011

Highest Quarterly Return

rr_BarChartHighestQuarterlyReturn

19.73%

Lowest Quarterly Return, Label

rr_LowestQuarterlyReturnLabel

Worst Quarter

Lowest Quarterly Return, Date

rr_BarChartLowestQuarterlyReturnDate

Sep. 30, 2011

Lowest Quarterly Return

rr_BarChartLowestQuarterlyReturn

(24.62%)

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

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 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 2000® Index 9/28/2007 (reflects no deduction for fees, expenses, or taxes)

rr_RiskReturnAbstract

rr_AverageAnnualReturnYear01

16.35%

rr_AverageAnnualReturnYear05

3.56%

rr_AverageAnnualReturnYear10

9.72%

rr_AverageAnnualReturnSinceInception

2.46%

rr_AverageAnnualReturnInceptionDate

Sep. 28, 2007

Russell 2000® Index 3/31/2008 (reflects no deduction for fees, expenses, or taxes)

rr_RiskReturnAbstract

rr_AverageAnnualReturnYear01

16.35%

rr_AverageAnnualReturnYear05

3.56%

rr_AverageAnnualReturnYear10

9.72%

rr_AverageAnnualReturnSinceInception

6.04%

rr_AverageAnnualReturnInceptionDate

Mar. 31, 2008

Russell 2000® Value Index 9/28/2007 (reflects no deduction for fees, expenses, or taxes)

rr_RiskReturnAbstract

rr_AverageAnnualReturnYear01

18.05%

rr_AverageAnnualReturnYear05

3.55%

rr_AverageAnnualReturnYear10

9.50%

rr_AverageAnnualReturnSinceInception

1.90%

rr_AverageAnnualReturnInceptionDate

Sep. 28, 2007

Russell 2000® Value Index 3/31/2008 (reflects no deduction for fees, expenses, or taxes)

rr_RiskReturnAbstract

rr_AverageAnnualReturnYear01

18.05%

rr_AverageAnnualReturnYear05

3.55%

rr_AverageAnnualReturnYear10

9.50%

rr_AverageAnnualReturnSinceInception

5.22%

rr_AverageAnnualReturnInceptionDate

Mar. 31, 2008

Class A

Maximum Sales Charge (Load) Imposed on Purchases (as a percentage of offering price)

rr_RiskReturnAbstract

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]

rr_ManagementFeesOverAssets

0.73%

rr_DistributionAndService12b1FeesOverAssets

0.30%

rr_OtherExpensesOverAssets

0.20%

rr_ExpensesOverAssets

1.23%

rr_ExpenseExampleYear01

693

rr_ExpenseExampleYear03

943

rr_ExpenseExampleYear05

1,212

rr_ExpenseExampleYear10

1,978

rr_ExpenseExampleNoRedemptionYear01

693

rr_ExpenseExampleNoRedemptionYear03

943

rr_ExpenseExampleNoRedemptionYear05

1,212

rr_ExpenseExampleNoRedemptionYear10

1,978

Annual Return 2003

rr_AnnualReturn2003

44.94%

Annual Return 2004

rr_AnnualReturn2004

22.39%

Annual Return 2005

rr_AnnualReturn2005

13.21%

Annual Return 2006

rr_AnnualReturn2006

20.42%

Annual Return 2007

rr_AnnualReturn2007

10.43%

Annual Return 2008

rr_AnnualReturn2008

(31.06%)

Annual Return 2009

rr_AnnualReturn2009

29.82%

Annual Return 2010

rr_AnnualReturn2010

26.23%

Annual Return 2011

rr_AnnualReturn2011

(4.61%)

Annual Return 2012

rr_AnnualReturn2012

10.57%

rr_AverageAnnualReturnYear01

4.21%

rr_AverageAnnualReturnYear05

2.35%

rr_AverageAnnualReturnYear10

11.61%

Class A | After Taxes on Distributions

rr_RiskReturnAbstract

rr_AverageAnnualReturnYear01

3.75%

rr_AverageAnnualReturnYear05

2.25%

rr_AverageAnnualReturnYear10

10.48%

Class A | After Taxes on Distributions and Sale of Fund Shares

rr_RiskReturnAbstract

rr_AverageAnnualReturnYear01

3.35%

rr_AverageAnnualReturnYear05

2.01%

rr_AverageAnnualReturnYear10

9.99%

Class B

Maximum Sales Charge (Load) Imposed on Purchases (as a percentage of offering price)

rr_RiskReturnAbstract

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

none

Maximum Deferred Sales Charge (Load) (as a percentage of offering price or redemption proceeds, whichever is lower)

rr_MaximumDeferredSalesChargeOverOther

5.00%

rr_ManagementFeesOverAssets

0.73%

rr_DistributionAndService12b1FeesOverAssets

1.00%

rr_OtherExpensesOverAssets

0.20%

rr_ExpensesOverAssets

1.93%

rr_ExpenseExampleYear01

696

rr_ExpenseExampleYear03

906

rr_ExpenseExampleYear05

1,242

rr_ExpenseExampleYear10

2,072

rr_ExpenseExampleNoRedemptionYear01

196

rr_ExpenseExampleNoRedemptionYear03

606

rr_ExpenseExampleNoRedemptionYear05

1,042

rr_ExpenseExampleNoRedemptionYear10

2,072

rr_AverageAnnualReturnYear01

4.77%

rr_AverageAnnualReturnYear05

2.48%

rr_AverageAnnualReturnYear10

11.67%

Class C

Maximum Sales Charge (Load) Imposed on Purchases (as a percentage of offering price)

rr_RiskReturnAbstract

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]

rr_ManagementFeesOverAssets

0.73%

rr_DistributionAndService12b1FeesOverAssets

1.00%

rr_OtherExpensesOverAssets

0.20%

rr_ExpensesOverAssets

1.93%

rr_ExpenseExampleYear01

296

rr_ExpenseExampleYear03

606

rr_ExpenseExampleYear05

1,042

rr_ExpenseExampleYear10

2,254

rr_ExpenseExampleNoRedemptionYear01

196

rr_ExpenseExampleNoRedemptionYear03

606

rr_ExpenseExampleNoRedemptionYear05

1,042

rr_ExpenseExampleNoRedemptionYear10

2,254

rr_AverageAnnualReturnYear01

8.77%

rr_AverageAnnualReturnYear05

2.85%

rr_AverageAnnualReturnYear10

11.52%

Class P

Maximum Sales Charge (Load) Imposed on Purchases (as a percentage of offering price)

rr_RiskReturnAbstract

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

none

Maximum Deferred Sales Charge (Load) (as a percentage of offering price or redemption proceeds, whichever is lower)

rr_MaximumDeferredSalesChargeOverOther

none

rr_ManagementFeesOverAssets

0.73%

rr_DistributionAndService12b1FeesOverAssets

0.45%

rr_OtherExpensesOverAssets

0.20%

rr_ExpensesOverAssets

1.38%

rr_ExpenseExampleYear01

140

rr_ExpenseExampleYear03

437

rr_ExpenseExampleYear05

755

rr_ExpenseExampleYear10

1,657

rr_ExpenseExampleNoRedemptionYear01

140

rr_ExpenseExampleNoRedemptionYear03

437

rr_ExpenseExampleNoRedemptionYear05

755

rr_ExpenseExampleNoRedemptionYear10

1,657

rr_AverageAnnualReturnYear01

10.37%

rr_AverageAnnualReturnYear05

3.41%

rr_AverageAnnualReturnYear10

12.13%

Class I

Maximum Sales Charge (Load) Imposed on Purchases (as a percentage of offering price)

rr_RiskReturnAbstract

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

none

Maximum Deferred Sales Charge (Load) (as a percentage of offering price or redemption proceeds, whichever is lower)

rr_MaximumDeferredSalesChargeOverOther

none

rr_ManagementFeesOverAssets

0.73%

rr_DistributionAndService12b1FeesOverAssets

none

rr_OtherExpensesOverAssets

0.20%

rr_ExpensesOverAssets

0.93%

rr_ExpenseExampleYear01

rr_ExpenseExampleYear03

296

rr_ExpenseExampleYear05

515

rr_ExpenseExampleYear10

1,143

rr_ExpenseExampleNoRedemptionYear01

rr_ExpenseExampleNoRedemptionYear03

296

rr_ExpenseExampleNoRedemptionYear05

515

rr_ExpenseExampleNoRedemptionYear10

1,143

rr_AverageAnnualReturnYear01

10.90%

rr_AverageAnnualReturnYear05

3.88%

rr_AverageAnnualReturnYear10

12.63%

Class F

Maximum Sales Charge (Load) Imposed on Purchases (as a percentage of offering price)

rr_RiskReturnAbstract

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

none

Maximum Deferred Sales Charge (Load) (as a percentage of offering price or redemption proceeds, whichever is lower)

rr_MaximumDeferredSalesChargeOverOther

none

rr_ManagementFeesOverAssets

0.73%

rr_DistributionAndService12b1FeesOverAssets

0.10%

rr_OtherExpensesOverAssets

0.20%

rr_ExpensesOverAssets

1.03%

rr_ExpenseExampleYear01

105

rr_ExpenseExampleYear03

328

rr_ExpenseExampleYear05

569

rr_ExpenseExampleYear10

1,259

rr_ExpenseExampleNoRedemptionYear01

105

rr_ExpenseExampleNoRedemptionYear03

328

rr_ExpenseExampleNoRedemptionYear05

569

rr_ExpenseExampleNoRedemptionYear10

1,259

rr_AverageAnnualReturnYear01

10.75%

rr_AverageAnnualReturnYear05

3.77%

rr_AverageAnnualReturnSinceInception

3.09%

rr_AverageAnnualReturnInceptionDate

Sep. 28, 2007

Class R2

Maximum Sales Charge (Load) Imposed on Purchases (as a percentage of offering price)

rr_RiskReturnAbstract

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

none

Maximum Deferred Sales Charge (Load) (as a percentage of offering price or redemption proceeds, whichever is lower)

rr_MaximumDeferredSalesChargeOverOther

none

rr_ManagementFeesOverAssets

0.73%

rr_DistributionAndService12b1FeesOverAssets

0.60%

rr_OtherExpensesOverAssets

0.20%

rr_ExpensesOverAssets

1.53%

rr_ExpenseExampleYear01

156

rr_ExpenseExampleYear03

483

rr_ExpenseExampleYear05

834

rr_ExpenseExampleYear10

1,824

rr_ExpenseExampleNoRedemptionYear01

156

rr_ExpenseExampleNoRedemptionYear03

483

rr_ExpenseExampleNoRedemptionYear05

834

rr_ExpenseExampleNoRedemptionYear10

1,824

rr_AverageAnnualReturnYear01

10.20%

rr_AverageAnnualReturnSinceInception

5.14%

rr_AverageAnnualReturnInceptionDate

Mar. 31, 2008

Class R3

Maximum Sales Charge (Load) Imposed on Purchases (as a percentage of offering price)

rr_RiskReturnAbstract

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

none

Maximum Deferred Sales Charge (Load) (as a percentage of offering price or redemption proceeds, whichever is lower)

rr_MaximumDeferredSalesChargeOverOther

none

rr_ManagementFeesOverAssets

0.73%

rr_DistributionAndService12b1FeesOverAssets

0.50%

rr_OtherExpensesOverAssets

0.20%

rr_ExpensesOverAssets

1.43%

rr_ExpenseExampleYear01

146

rr_ExpenseExampleYear03

452

rr_ExpenseExampleYear05

782

rr_ExpenseExampleYear10

1,713

rr_ExpenseExampleNoRedemptionYear01

146

rr_ExpenseExampleNoRedemptionYear03

452

rr_ExpenseExampleNoRedemptionYear05

782

rr_ExpenseExampleNoRedemptionYear10

$ 1,713

rr_AverageAnnualReturnYear01

10.35%

rr_AverageAnnualReturnSinceInception

5.24%

rr_AverageAnnualReturnInceptionDate

Mar. 31, 2008

[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.

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Label

Element

Value

Objective, Primary [Text Block]

rr_RiskReturnAbstract

Risk/Return [Heading]

rr_RiskReturnHeading

Lord Abbett Growth Opportunities Fund

Objective [Heading]

rr_ObjectiveHeading

INVESTMENT OBJECTIVE

rr_ObjectivePrimaryTextBlock

The Fund’s investment objective is capital appreciation.

Expense [Heading]

rr_ExpenseHeading

FEES AND EXPENSES

Expense Narrative [Text Block]

rr_ExpenseNarrativeTextBlock

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)

Fee Waiver or Reimbursement over Assets, Date of Termination

rr_FeeWaiverOrReimbursementOverAssetsDateOfTermination

2014-03-31

Portfolio Turnover [Heading]

rr_PortfolioTurnoverHeading

Portfolio Turnover.

Portfolio Turnover [Text Block]

rr_PortfolioTurnoverTextBlock

Portfolio Turnover, Rate

rr_PortfolioTurnoverRate

145.62%

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

Expenses Restated to Reflect Current [Text]

rr_ExpensesRestatedToReflectCurrent

These amounts have been updated from fiscal year amounts to reflect current fees and expenses.

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 (except that the example takes into account the fee waiver and expense limitation agreement between the Fund and Lord, Abbett & Co. LLC for the term of the agreement). 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

Under normal market conditions, the Fund pursues its investment objective by investing at least 65% of its net assets in equity securities of mid-sized companies. The Fund follows a growth style of investing, which means that we favor companies that show the potential for strong revenue and earnings growth.

Equity securities of mid-sized companies. The Fund may invest in any security that represents equity ownership in a company. Currently, the Fund invests in equity securities consisting principally of common stocks, preferred stocks, and equity interests in trusts (including real estate investment trusts), partnerships, joint ventures, and limited liability companies.
Mid-sized companies having a market capitalization at the time of purchase that falls within the market capitalization range of companies in the Russell Midcap® Index.
Growth companies that portfolio management believes exhibit faster-than-average gains in earnings and have the potential to continue profit growth at a high level.

Risk [Heading]

rr_RiskHeading

PRINCIPAL RISKS

Risk Narrative [Text Block]

rr_RiskNarrativeTextBlock

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.
Mid-Sized Company Risk: Securities of mid-sized companies generally involve greater risks than investments in larger companies. Mid-sized companies may have limited management experience or depth, limited access to capital, or limited products or services, or operate in markets that have not yet been established. Mid-sized company securities tend to be more volatile and less liquid than equity securities of larger companies.
Growth Investing Risk: Growth stocks tend to be more volatile than slower-growing value stocks. The prices of growth stocks may fall dramatically if, for example, the company fails to meet earnings or revenue projections.
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. Because the Fund’s limit on foreign securities focuses on where the security is principally traded rather than where the issuer is organized and/or operated, the percentage of the Fund’s assets that is exposed to foreign market risks may exceed the percentage of the Fund’s assets that the Fund considers to represent foreign securities. Emerging market securities generally are more volatile than other foreign securities, and are subject to greater liquidity, regulatory, and political risks.
Derivatives Risk: Derivatives can increase the Fund’s volatility and/or reduce the Fund’s returns. 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.
Industry/Sector Risk: To the extent that the Fund emphasizes a particular industry or sector, events affecting that industry or sector (such as government regulations, resource availability or economic developments) will impact the Fund’s performance to a greater degree than events affecting other industries or sectors.
High Portfolio Turnover Risk: High portfolio turnover may result in increased brokerage fees or other transaction costs, reduced investment performance, and higher taxes.

Risk Lose Money [Text]

rr_RiskLoseMoney

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

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

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 +17.60%		Worst Quarter 3rd Q ’11 -24.99%

Highest Quarterly Return, Label

rr_HighestQuarterlyReturnLabel

Best Quarter

Highest Quarterly Return, Date

rr_BarChartHighestQuarterlyReturnDate

Jun. 30, 2009

Highest Quarterly Return

rr_BarChartHighestQuarterlyReturn

17.60%

Lowest Quarterly Return, Label

rr_LowestQuarterlyReturnLabel

Worst Quarter

Lowest Quarterly Return, Date

rr_BarChartLowestQuarterlyReturnDate

Sep. 30, 2011

Lowest Quarterly Return

rr_BarChartLowestQuarterlyReturn

(24.99%)

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

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

Performance Table Narrative

rr_PerformanceTableNarrativeTextBlock

Russell Midcap® Growth Index (reflects no deduction for fees, expenses, or taxes)

rr_RiskReturnAbstract

rr_AverageAnnualReturnYear01

15.81%

rr_AverageAnnualReturnYear05

3.23%

rr_AverageAnnualReturnYear10

10.32%

rr_AverageAnnualReturnSinceInception

2.74%

rr_AverageAnnualReturnInceptionDate

Sep. 28, 2007

Russell Midcap® Index (reflects no deduction for fees, expenses, or taxes)

rr_RiskReturnAbstract

rr_AverageAnnualReturnYear01

17.28%

rr_AverageAnnualReturnYear05

3.57%

rr_AverageAnnualReturnYear10

10.65%

rr_AverageAnnualReturnSinceInception

2.68%

rr_AverageAnnualReturnInceptionDate

Sep. 28, 2007

Class A

Maximum Sales Charge (Load) Imposed on Purchases (as a percentage of offering price)

rr_RiskReturnAbstract

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]

rr_ManagementFeesOverAssets

0.75%

rr_DistributionAndService12b1FeesOverAssets

0.35%

rr_OtherExpensesOverAssets

0.32%

rr_ExpensesOverAssets

1.42%

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

rr_FeeWaiverOrReimbursementOverAssets

(0.02%)

^[2],[3]

rr_NetExpensesOverAssets

1.40%

^[2],[3]

rr_ExpenseExampleYear01

709

rr_ExpenseExampleYear03

997

rr_ExpenseExampleYear05

1,305

rr_ExpenseExampleYear10

2,177

rr_ExpenseExampleNoRedemptionYear01

709

rr_ExpenseExampleNoRedemptionYear03

997

rr_ExpenseExampleNoRedemptionYear05

1,305

rr_ExpenseExampleNoRedemptionYear10

2,177

Annual Return 2003

rr_AnnualReturn2003

33.85%

Annual Return 2004

rr_AnnualReturn2004

11.52%

Annual Return 2005

rr_AnnualReturn2005

4.17%

Annual Return 2006

rr_AnnualReturn2006

7.28%

Annual Return 2007

rr_AnnualReturn2007

21.05%

Annual Return 2008

rr_AnnualReturn2008

(38.28%)

Annual Return 2009

rr_AnnualReturn2009

45.37%

Annual Return 2010

rr_AnnualReturn2010

23.26%

Annual Return 2011

rr_AnnualReturn2011

(10.04%)

Annual Return 2012

rr_AnnualReturn2012

13.81%

rr_AverageAnnualReturnYear01

7.29%

rr_AverageAnnualReturnYear05

1.31%

rr_AverageAnnualReturnYear10

7.98%

Class A | After Taxes on Distributions

rr_RiskReturnAbstract

rr_AverageAnnualReturnYear01

7.29%

rr_AverageAnnualReturnYear05

0.69%

rr_AverageAnnualReturnYear10

7.17%

Class A | After Taxes on Distributions and Sale of Fund Shares

rr_RiskReturnAbstract

rr_AverageAnnualReturnYear01

4.74%

rr_AverageAnnualReturnYear05

1.01%

rr_AverageAnnualReturnYear10

6.85%

Class B

Maximum Sales Charge (Load) Imposed on Purchases (as a percentage of offering price)

rr_RiskReturnAbstract

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

none

Maximum Deferred Sales Charge (Load) (as a percentage of offering price or redemption proceeds, whichever is lower)

rr_MaximumDeferredSalesChargeOverOther

5.00%

rr_ManagementFeesOverAssets

0.75%

rr_DistributionAndService12b1FeesOverAssets

1.00%

rr_OtherExpensesOverAssets

0.32%

rr_ExpensesOverAssets

2.07%

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

rr_FeeWaiverOrReimbursementOverAssets

(0.02%)

^[2],[3]

rr_NetExpensesOverAssets

2.05%

^[2],[3]

rr_ExpenseExampleYear01

708

rr_ExpenseExampleYear03

947

rr_ExpenseExampleYear05

1,312

rr_ExpenseExampleYear10

2,232

rr_ExpenseExampleNoRedemptionYear01

208

rr_ExpenseExampleNoRedemptionYear03

647

rr_ExpenseExampleNoRedemptionYear05

1,112

rr_ExpenseExampleNoRedemptionYear10

2,232

rr_AverageAnnualReturnYear01

8.01%

rr_AverageAnnualReturnYear05

1.52%

rr_AverageAnnualReturnYear10

8.08%

Class C

Maximum Sales Charge (Load) Imposed on Purchases (as a percentage of offering price)

rr_RiskReturnAbstract

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

none

Maximum Deferred Sales Charge (Load) (as a percentage of offering price or redemption proceeds, whichever is lower)

rr_MaximumDeferredSalesChargeOverOther

1.00%

^[4]

rr_ManagementFeesOverAssets

0.75%

rr_DistributionAndService12b1FeesOverAssets

1.00%

rr_OtherExpensesOverAssets

0.32%

rr_ExpensesOverAssets

2.07%

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

rr_FeeWaiverOrReimbursementOverAssets

(0.02%)

^[2],[3]

rr_NetExpensesOverAssets

2.05%

^[2],[3]

rr_ExpenseExampleYear01

308

rr_ExpenseExampleYear03

647

rr_ExpenseExampleYear05

1,112

rr_ExpenseExampleYear10

2,398

rr_ExpenseExampleNoRedemptionYear01

208

rr_ExpenseExampleNoRedemptionYear03

647

rr_ExpenseExampleNoRedemptionYear05

1,112

rr_ExpenseExampleNoRedemptionYear10

2,398

rr_AverageAnnualReturnYear01

12.09%

rr_AverageAnnualReturnYear05

1.86%

rr_AverageAnnualReturnYear10

7.94%

Class P

Maximum Sales Charge (Load) Imposed on Purchases (as a percentage of offering price)

rr_RiskReturnAbstract

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

none

Maximum Deferred Sales Charge (Load) (as a percentage of offering price or redemption proceeds, whichever is lower)

rr_MaximumDeferredSalesChargeOverOther

none

rr_ManagementFeesOverAssets

0.75%

rr_DistributionAndService12b1FeesOverAssets

0.45%

rr_OtherExpensesOverAssets

0.32%

rr_ExpensesOverAssets

1.52%

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

rr_FeeWaiverOrReimbursementOverAssets

(0.02%)

^[2],[3]

rr_NetExpensesOverAssets

1.50%

^[2],[3]

rr_ExpenseExampleYear01

153

rr_ExpenseExampleYear03

478

rr_ExpenseExampleYear05

827

rr_ExpenseExampleYear10

1,811

rr_ExpenseExampleNoRedemptionYear01

153

rr_ExpenseExampleNoRedemptionYear03

478

rr_ExpenseExampleNoRedemptionYear05

827

rr_ExpenseExampleNoRedemptionYear10

1,811

rr_AverageAnnualReturnYear01

13.66%

rr_AverageAnnualReturnYear05

2.40%

rr_AverageAnnualReturnYear10

8.52%

Class I

Maximum Sales Charge (Load) Imposed on Purchases (as a percentage of offering price)

rr_RiskReturnAbstract

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

none

Maximum Deferred Sales Charge (Load) (as a percentage of offering price or redemption proceeds, whichever is lower)

rr_MaximumDeferredSalesChargeOverOther

none

rr_ManagementFeesOverAssets

0.75%

rr_DistributionAndService12b1FeesOverAssets

none

rr_OtherExpensesOverAssets

0.32%

rr_ExpensesOverAssets

1.07%

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

rr_FeeWaiverOrReimbursementOverAssets

(0.02%)

^[2],[3]

rr_NetExpensesOverAssets

1.05%

^[2],[3]

rr_ExpenseExampleYear01

107

rr_ExpenseExampleYear03

338

rr_ExpenseExampleYear05

588

rr_ExpenseExampleYear10

1,304

rr_ExpenseExampleNoRedemptionYear01

107

rr_ExpenseExampleNoRedemptionYear03

338

rr_ExpenseExampleNoRedemptionYear05

588

rr_ExpenseExampleNoRedemptionYear10

1,304

rr_AverageAnnualReturnYear01

14.24%

rr_AverageAnnualReturnYear05

2.87%

rr_AverageAnnualReturnYear10

9.00%

Class F

Maximum Sales Charge (Load) Imposed on Purchases (as a percentage of offering price)

rr_RiskReturnAbstract

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

none

Maximum Deferred Sales Charge (Load) (as a percentage of offering price or redemption proceeds, whichever is lower)

rr_MaximumDeferredSalesChargeOverOther

none

rr_ManagementFeesOverAssets

0.75%

rr_DistributionAndService12b1FeesOverAssets

0.10%

rr_OtherExpensesOverAssets

0.32%

rr_ExpensesOverAssets

1.17%

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

rr_FeeWaiverOrReimbursementOverAssets

(0.02%)

^[2],[3]

rr_NetExpensesOverAssets

1.15%

^[2],[3]

rr_ExpenseExampleYear01

117

rr_ExpenseExampleYear03

370

rr_ExpenseExampleYear05

642

rr_ExpenseExampleYear10

1,419

rr_ExpenseExampleNoRedemptionYear01

117

rr_ExpenseExampleNoRedemptionYear03

370

rr_ExpenseExampleNoRedemptionYear05

642

rr_ExpenseExampleNoRedemptionYear10

1,419

rr_AverageAnnualReturnYear01

14.10%

rr_AverageAnnualReturnYear05

2.77%

rr_AverageAnnualReturnSinceInception

3.04%

rr_AverageAnnualReturnInceptionDate

Sep. 28, 2007

Class R2

Maximum Sales Charge (Load) Imposed on Purchases (as a percentage of offering price)

rr_RiskReturnAbstract

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

none

Maximum Deferred Sales Charge (Load) (as a percentage of offering price or redemption proceeds, whichever is lower)

rr_MaximumDeferredSalesChargeOverOther

none

rr_ManagementFeesOverAssets

0.75%

rr_DistributionAndService12b1FeesOverAssets

0.60%

rr_OtherExpensesOverAssets

0.32%

rr_ExpensesOverAssets

1.67%

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

rr_FeeWaiverOrReimbursementOverAssets

(0.02%)

^[2],[3]

rr_NetExpensesOverAssets

1.65%

^[2],[3]

rr_ExpenseExampleYear01

168

rr_ExpenseExampleYear03

525

rr_ExpenseExampleYear05

905

rr_ExpenseExampleYear10

1,975

rr_ExpenseExampleNoRedemptionYear01

168

rr_ExpenseExampleNoRedemptionYear03

525

rr_ExpenseExampleNoRedemptionYear05

905

rr_ExpenseExampleNoRedemptionYear10

1,975

rr_AverageAnnualReturnYear01

13.51%

rr_AverageAnnualReturnYear05

2.26%

rr_AverageAnnualReturnSinceInception

2.54%

rr_AverageAnnualReturnInceptionDate

Sep. 28, 2007

Class R3

Maximum Sales Charge (Load) Imposed on Purchases (as a percentage of offering price)

rr_RiskReturnAbstract

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

none

Maximum Deferred Sales Charge (Load) (as a percentage of offering price or redemption proceeds, whichever is lower)

rr_MaximumDeferredSalesChargeOverOther

none

rr_ManagementFeesOverAssets

0.75%

rr_DistributionAndService12b1FeesOverAssets

0.50%

rr_OtherExpensesOverAssets

0.32%

rr_ExpensesOverAssets

1.57%

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

rr_FeeWaiverOrReimbursementOverAssets

(0.02%)

^[2],[3]

rr_NetExpensesOverAssets

1.55%

^[2],[3]

rr_ExpenseExampleYear01

158

rr_ExpenseExampleYear03

494

rr_ExpenseExampleYear05

853

rr_ExpenseExampleYear10

1,866

rr_ExpenseExampleNoRedemptionYear01

158

rr_ExpenseExampleNoRedemptionYear03

494

rr_ExpenseExampleNoRedemptionYear05

853

rr_ExpenseExampleNoRedemptionYear10

$ 1,866

rr_AverageAnnualReturnYear01

13.60%

rr_AverageAnnualReturnYear05

2.38%

rr_AverageAnnualReturnSinceInception

2.65%

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]	These amounts have been updated from fiscal year amounts to reflect current fees and expenses.
[3]	For the period from April 1, 2013 through March 31, 2014, Lord, Abbett & Co. LLC has contractually agreed to waive its fees and reimburse expenses to the extent necessary to limit total net annual operating expenses for each class, excluding 12b-1 fees, to an annual rate of 1.05%. Shareholders will incur actual total annual operating expenses of less than or equal to 1.05% plus the amount of any applicable 12b-1 fee. This agreement may be terminated only by the approval of the Fund's Board of Directors.
[4]	A CDSC of 1.00% may be assessed on Class C shares if they are redeemed before the first anniversary of their purchase.

XML 11 R9.htm IDEA: XBRL DOCUMENT

Label

Element

Value

Objective, Primary [Text Block]

rr_RiskReturnAbstract

Risk/Return [Heading]

rr_RiskReturnHeading

Lord Abbett Calibrated Dividend Growth Fund

Objective [Heading]

rr_ObjectiveHeading

INVESTMENT OBJECTIVE

rr_ObjectivePrimaryTextBlock

The Fund’s investment objective is to seek current income and capital appreciation.

Expense [Heading]

rr_ExpenseHeading

FEES AND EXPENSES

Expense Narrative [Text Block]

rr_ExpenseNarrativeTextBlock

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)

Fee Waiver or Reimbursement over Assets, Date of Termination

rr_FeeWaiverOrReimbursementOverAssetsDateOfTermination

2014-03-31

Portfolio Turnover [Heading]

rr_PortfolioTurnoverHeading

Portfolio Turnover.

Portfolio Turnover [Text Block]

rr_PortfolioTurnoverTextBlock

Portfolio Turnover, Rate

rr_PortfolioTurnoverRate

102.89%

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

Expenses Restated to Reflect Current [Text]

rr_ExpensesRestatedToReflectCurrent

These amounts have been updated from fiscal year amounts to reflect current fees and expenses

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 (except that the example takes into account the fee waiver and expense limitation agreement between the Fund and Lord, Abbett & Co. LLC for the term of the agreement). 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

The Fund invests principally in equity securities of large and mid-sized companies that have a history of increasing dividends and that have the potential for capital appreciation. The Fund’s portfolio management team uses fundamental research and quantitative analysis to select the Fund’s investments, while seeking to maintain an investment portfolio with industry, sector, and capitalization weightings and other portfolio characteristics that generally are similar to those of the S&P 900 10-Year Dividend Growth Index (the “Dividend Growth Index”). The Dividend Growth Index is the exclusive property of Standard & Poor’s Financial Services LLC (“S&P”). Under a contract with Lord Abbett, S&P administers, maintains, and calculates the Dividend Growth Index. S&P and its affiliates will have no liability for any errors or omissions in calculating the Dividend Growth Index.

The Fund focuses on U.S. large and mid-sized companies that historically have grown their dividends over time, which represent a relatively narrow market segment compared to the broader U.S. equity markets. The Fund also may invest to a lesser extent in foreign companies. Under normal market conditions, the Fund’s investments primarily include the following types of securities and other financial instruments:

Equity securities of large and mid-sized companies. The Fund may invest in any security that represents equity ownership in a company. Currently, the Fund invests in equity securities consisting principally of common stocks, preferred stocks, and equity interests in trusts, partnerships, joint ventures, and limited liability companies.
Dividend paying securities issued by companies that pay out a portion of their profits to shareholders instead of reinvesting all their profits in their businesses. Although issuers of dividend paying securities may include fast growing companies, they more commonly consist of “value” companies whose securities have the potential for investment return because they are underpriced or undervalued according to certain financial measurements of intrinsic worth or business prospects.

Risk [Heading]

rr_RiskHeading

PRINCIPAL RISKS

Risk Narrative [Text Block]

rr_RiskNarrativeTextBlock

Investment Strategy Risk: If the Fund’s fundamental research and quantitative analysis fail to produce the intended result, the Fund may suffer losses or underperform its benchmark or other funds with the same investment objective or strategies, even in a rising market. In addition, the Fund’s strategy of focusing on the relatively narrow market segment of dividend paying companies means the Fund will be more exposed to risks associated with that particular market segment than a fund that invests more widely.
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.
Dividend Risk: Securities of dividend paying companies may become less available for purchase, limiting the Fund’s ability to produce current income and increasing the volatility of the Fund’s returns. At times, the performance of dividend paying companies may lag the performance of other companies or the broader market as a whole. In addition, a company’s dividend payments may vary over time, and there is no guarantee that a company will pay a dividend at all.
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.
Mid-Sized Company Risk: Securities of mid-sized companies generally involve greater risks than investments in larger companies. Mid-sized companies may have limited management experience or depth, limited access to capital, or limited products or services, or operate in markets that have not yet been established. Mid-sized company securities tend to be more volatile and less liquid than equity securities of larger companies.
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 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. In addition, they may be subject to less government supervision.

Risk Lose Money [Text]

rr_RiskLoseMoney

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]

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PERFORMANCE

Performance Narrative [Text Block]

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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 Additional Market Index [Text]

rr_PerformanceAdditionalMarketIndex

The Fund believes that the S&P 900 10-Year Dividend Growth Index is a more appropriate index than the 60% S&P 500 Index/40% Barclays Capital U.S. Aggregate Bond Index, in light of the composition of the Fund's portfolio following implementation of its dividend-oriented equity strategy. Because the S&P 900 10-Year Dividend Growth Index more closely reflects the market segment in which the Fund invests, the Fund will remove the 60% S&P 500 Index/40% Barclays U.S. Aggregate Bond Index from the performance table in the future.

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 and table show performance of the Fund during periods when the Fund operated under the name "Lord Abbett Capital Structure Fund" and invested in a mix of equity and fixed income securities. Effective September 27, 2012, the Fund implemented its present dividend-oriented equity strategy. This change is likely to affect the Fund's performance in the future.

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]

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Best Quarter 4th Q ‘03 +12.47%		Worst Quarter 3rd Q ’11 -13.93%

Highest Quarterly Return, Label

rr_HighestQuarterlyReturnLabel

Best Quarter

Highest Quarterly Return, Date

rr_BarChartHighestQuarterlyReturnDate

Dec. 31, 2003

Highest Quarterly Return

rr_BarChartHighestQuarterlyReturn

12.47%

Lowest Quarterly Return, Label

rr_LowestQuarterlyReturnLabel

Worst Quarter

Lowest Quarterly Return, Date

rr_BarChartLowestQuarterlyReturnDate

Sep. 30, 2011

Lowest Quarterly Return

rr_BarChartLowestQuarterlyReturn

(13.93%)

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

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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

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Performance Table Narrative

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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 Fund believes that the S&P 900 10-Year Dividend Growth Index is a more appropriate index than the 60% S&P 500^® Index/40% Barclays Capital U.S. Aggregate Bond Index, in light of the composition of the Fund’s portfolio following implementation of its dividend-oriented equity strategy. Because the S&P 900 10-Year Dividend Growth Index more closely reflects the market segment in which the Fund invests, the Fund will remove the 60% S&P 500^® Index/40% Barclays U.S. Aggregate Bond Index from the performance table in the future.

S&P 500® Index (reflects no deduction for fees, expenses, or taxes)

rr_RiskReturnAbstract

rr_AverageAnnualReturnYear01

16.00%

rr_AverageAnnualReturnYear05

1.66%

rr_AverageAnnualReturnYear10

7.10%

rr_AverageAnnualReturnSinceInception

0.93%

rr_AverageAnnualReturnInceptionDate

Sep. 28, 2007

S&P 900 10-Year Dividend Growth Index (reflects no deduction for fees, expenses, or taxes)

rr_RiskReturnAbstract

rr_AverageAnnualReturnYear01

12.50%

rr_AverageAnnualReturnYear05

2.20%

rr_AverageAnnualReturnYear10

5.98%

rr_AverageAnnualReturnSinceInception

1.07%

rr_AverageAnnualReturnInceptionDate

Sep. 28, 2007

60% S&P 500® Index / 40% Barclays U.S. Aggregate Bond Index (reflects no deduction for fees, expenses, or taxes)

rr_RiskReturnAbstract

rr_AverageAnnualReturnYear01

11.31%

rr_AverageAnnualReturnYear05

3.81%

rr_AverageAnnualReturnYear10

6.62%

rr_AverageAnnualReturnSinceInception

3.46%

rr_AverageAnnualReturnInceptionDate

Sep. 28, 2007

Class A

Maximum Sales Charge (Load) Imposed on Purchases (as a percentage of offering price)

rr_RiskReturnAbstract

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]

rr_ManagementFeesOverAssets

0.75%

rr_DistributionAndService12b1FeesOverAssets

0.25%

^[2]

rr_OtherExpensesOverAssets

0.23%

rr_ExpensesOverAssets

1.23%

^[2]

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

rr_FeeWaiverOrReimbursementOverAssets

(0.38%)

^[3]

rr_NetExpensesOverAssets

0.85%

^[3]

rr_ExpenseExampleYear01

657

rr_ExpenseExampleYear03

907

rr_ExpenseExampleYear05

1,177

rr_ExpenseExampleYear10

1,946

rr_ExpenseExampleNoRedemptionYear01

657

rr_ExpenseExampleNoRedemptionYear03

907

rr_ExpenseExampleNoRedemptionYear05

1,177

rr_ExpenseExampleNoRedemptionYear10

1,946

Annual Return 2003

rr_AnnualReturn2003

21.79%

Annual Return 2004

rr_AnnualReturn2004

16.72%

Annual Return 2005

rr_AnnualReturn2005

3.65%

Annual Return 2006

rr_AnnualReturn2006

14.78%

Annual Return 2007

rr_AnnualReturn2007

3.03%

Annual Return 2008

rr_AnnualReturn2008

(27.29%)

Annual Return 2009

rr_AnnualReturn2009

23.21%

Annual Return 2010

rr_AnnualReturn2010

14.81%

Annual Return 2011

rr_AnnualReturn2011

(0.23%)

Annual Return 2012

rr_AnnualReturn2012

13.05%

rr_AverageAnnualReturnYear01

6.53%

rr_AverageAnnualReturnYear05

1.81%

rr_AverageAnnualReturnYear10

6.66%

Class A | After Taxes on Distributions

rr_RiskReturnAbstract

rr_AverageAnnualReturnYear01

5.78%

rr_AverageAnnualReturnYear05

1.04%

rr_AverageAnnualReturnYear10

5.80%

Class A | After Taxes on Distributions and Sale of Fund Shares

rr_RiskReturnAbstract

rr_AverageAnnualReturnYear01

4.65%

rr_AverageAnnualReturnYear05

1.19%

rr_AverageAnnualReturnYear10

5.50%

Class B

Maximum Sales Charge (Load) Imposed on Purchases (as a percentage of offering price)

rr_RiskReturnAbstract

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

none

Maximum Deferred Sales Charge (Load) (as a percentage of offering price or redemption proceeds, whichever is lower)

rr_MaximumDeferredSalesChargeOverOther

5.00%

rr_ManagementFeesOverAssets

0.75%

rr_DistributionAndService12b1FeesOverAssets

1.00%

rr_OtherExpensesOverAssets

0.23%

rr_ExpensesOverAssets

1.98%

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

rr_FeeWaiverOrReimbursementOverAssets

(0.38%)

^[3]

rr_NetExpensesOverAssets

1.60%

^[3]

rr_ExpenseExampleYear01

663

rr_ExpenseExampleYear03

885

rr_ExpenseExampleYear05

1,232

rr_ExpenseExampleYear10

2,081

rr_ExpenseExampleNoRedemptionYear01

163

rr_ExpenseExampleNoRedemptionYear03

585

rr_ExpenseExampleNoRedemptionYear05

1,032

rr_ExpenseExampleNoRedemptionYear10

2,081

rr_AverageAnnualReturnYear01

7.26%

rr_AverageAnnualReturnYear05

1.98%

rr_AverageAnnualReturnYear10

6.74%

Class C

Maximum Sales Charge (Load) Imposed on Purchases (as a percentage of offering price)

rr_RiskReturnAbstract

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

none

Maximum Deferred Sales Charge (Load) (as a percentage of offering price or redemption proceeds, whichever is lower)

rr_MaximumDeferredSalesChargeOverOther

1.00%

^[4]

rr_ManagementFeesOverAssets

0.75%

rr_DistributionAndService12b1FeesOverAssets

1.00%

rr_OtherExpensesOverAssets

0.23%

rr_ExpensesOverAssets

1.98%

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

rr_FeeWaiverOrReimbursementOverAssets

(0.38%)

^[3]

rr_NetExpensesOverAssets

1.60%

^[3]

rr_ExpenseExampleYear01

263

rr_ExpenseExampleYear03

585

rr_ExpenseExampleYear05

1,032

rr_ExpenseExampleYear10

2,276

rr_ExpenseExampleNoRedemptionYear01

163

rr_ExpenseExampleNoRedemptionYear03

585

rr_ExpenseExampleNoRedemptionYear05

1,032

rr_ExpenseExampleNoRedemptionYear10

2,276

rr_AverageAnnualReturnYear01

11.30%

rr_AverageAnnualReturnYear05

2.36%

rr_AverageAnnualReturnYear10

6.62%

Class P

Maximum Sales Charge (Load) Imposed on Purchases (as a percentage of offering price)

rr_RiskReturnAbstract

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

none

Maximum Deferred Sales Charge (Load) (as a percentage of offering price or redemption proceeds, whichever is lower)

rr_MaximumDeferredSalesChargeOverOther

none

rr_ManagementFeesOverAssets

0.75%

rr_DistributionAndService12b1FeesOverAssets

0.45%

rr_OtherExpensesOverAssets

0.23%

rr_ExpensesOverAssets

1.43%

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

rr_FeeWaiverOrReimbursementOverAssets

(0.38%)

^[3]

rr_NetExpensesOverAssets

1.05%

^[3]

rr_ExpenseExampleYear01

107

rr_ExpenseExampleYear03

415

rr_ExpenseExampleYear05

745

rr_ExpenseExampleYear10

1,680

rr_ExpenseExampleNoRedemptionYear01

107

rr_ExpenseExampleNoRedemptionYear03

415

rr_ExpenseExampleNoRedemptionYear05

745

rr_ExpenseExampleNoRedemptionYear10

1,680

rr_AverageAnnualReturnYear01

12.94%

rr_AverageAnnualReturnYear05

2.92%

rr_AverageAnnualReturnYear10

7.21%

Class I

Maximum Sales Charge (Load) Imposed on Purchases (as a percentage of offering price)

rr_RiskReturnAbstract

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

none

Maximum Deferred Sales Charge (Load) (as a percentage of offering price or redemption proceeds, whichever is lower)

rr_MaximumDeferredSalesChargeOverOther

none

rr_ManagementFeesOverAssets

0.75%

rr_DistributionAndService12b1FeesOverAssets

none

rr_OtherExpensesOverAssets

0.23%

rr_ExpensesOverAssets

0.98%

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

rr_FeeWaiverOrReimbursementOverAssets

(0.38%)

^[3]

rr_NetExpensesOverAssets

0.60%

^[3]

rr_ExpenseExampleYear01

rr_ExpenseExampleYear03

274

rr_ExpenseExampleYear05

505

rr_ExpenseExampleYear10

1,167

rr_ExpenseExampleNoRedemptionYear01

rr_ExpenseExampleNoRedemptionYear03

274

rr_ExpenseExampleNoRedemptionYear05

505

rr_ExpenseExampleNoRedemptionYear10

1,167

rr_AverageAnnualReturnYear01

13.34%

rr_AverageAnnualReturnYear05

3.37%

rr_AverageAnnualReturnYear10

7.67%

Class F

Maximum Sales Charge (Load) Imposed on Purchases (as a percentage of offering price)

rr_RiskReturnAbstract

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

none

Maximum Deferred Sales Charge (Load) (as a percentage of offering price or redemption proceeds, whichever is lower)

rr_MaximumDeferredSalesChargeOverOther

none

rr_ManagementFeesOverAssets

0.75%

rr_DistributionAndService12b1FeesOverAssets

0.10%

rr_OtherExpensesOverAssets

0.23%

rr_ExpensesOverAssets

1.08%

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

rr_FeeWaiverOrReimbursementOverAssets

(0.38%)

^[3]

rr_NetExpensesOverAssets

0.70%

^[3]

rr_ExpenseExampleYear01

rr_ExpenseExampleYear03

306

rr_ExpenseExampleYear05

559

rr_ExpenseExampleYear10

1,283

rr_ExpenseExampleNoRedemptionYear01

rr_ExpenseExampleNoRedemptionYear03

306

rr_ExpenseExampleNoRedemptionYear05

559

rr_ExpenseExampleNoRedemptionYear10

1,283

rr_AverageAnnualReturnYear01

13.23%

rr_AverageAnnualReturnYear05

3.27%

rr_AverageAnnualReturnSinceInception

2.47%

rr_AverageAnnualReturnInceptionDate

Sep. 28, 2007

Class R2

Maximum Sales Charge (Load) Imposed on Purchases (as a percentage of offering price)

rr_RiskReturnAbstract

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

none

Maximum Deferred Sales Charge (Load) (as a percentage of offering price or redemption proceeds, whichever is lower)

rr_MaximumDeferredSalesChargeOverOther

none

rr_ManagementFeesOverAssets

0.75%

rr_DistributionAndService12b1FeesOverAssets

0.60%

rr_OtherExpensesOverAssets

0.23%

rr_ExpensesOverAssets

1.58%

^[2]

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

rr_FeeWaiverOrReimbursementOverAssets

(0.38%)

^[3]

rr_NetExpensesOverAssets

1.20%

^[3]

rr_ExpenseExampleYear01

122

rr_ExpenseExampleYear03

462

rr_ExpenseExampleYear05

825

rr_ExpenseExampleYear10

1,846

rr_ExpenseExampleNoRedemptionYear01

122

rr_ExpenseExampleNoRedemptionYear03

462

rr_ExpenseExampleNoRedemptionYear05

825

rr_ExpenseExampleNoRedemptionYear10

1,846

rr_AverageAnnualReturnYear01

12.80%

rr_AverageAnnualReturnYear05

2.90%

rr_AverageAnnualReturnSinceInception

2.10%

rr_AverageAnnualReturnInceptionDate

Sep. 28, 2007

Class R3

Maximum Sales Charge (Load) Imposed on Purchases (as a percentage of offering price)

rr_RiskReturnAbstract

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

none

Maximum Deferred Sales Charge (Load) (as a percentage of offering price or redemption proceeds, whichever is lower)

rr_MaximumDeferredSalesChargeOverOther

none

rr_ManagementFeesOverAssets

0.75%

rr_DistributionAndService12b1FeesOverAssets

0.50%

rr_OtherExpensesOverAssets

0.23%

rr_ExpensesOverAssets

1.48%

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

rr_FeeWaiverOrReimbursementOverAssets

(0.38%)

^[3]

rr_NetExpensesOverAssets

1.10%

^[3]

rr_ExpenseExampleYear01

112

rr_ExpenseExampleYear03

431

rr_ExpenseExampleYear05

772

rr_ExpenseExampleYear10

1,736

rr_ExpenseExampleNoRedemptionYear01

112

rr_ExpenseExampleNoRedemptionYear03

431

rr_ExpenseExampleNoRedemptionYear05

772

rr_ExpenseExampleNoRedemptionYear10

$ 1,736

rr_AverageAnnualReturnYear01

12.81%

rr_AverageAnnualReturnYear05

2.86%

rr_AverageAnnualReturnSinceInception

2.07%