Label

Element

Value

Risk/Return:

rr_RiskReturnAbstract

Registrant Name

dei_EntityRegistrantName

JANUS INVESTMENT FUND

Prospectus Date

rr_ProspectusDate

Jan. 28, 2015

Perkins Global Value Fund | Class A, C, S, I, N, T Shares

Risk/Return:

rr_RiskReturnAbstract

Risk/Return [Heading]

rr_RiskReturnHeading

FUND SUMMARY

Perkins Global Value Fund

Objective [Heading]

rr_ObjectiveHeading

INVESTMENT OBJECTIVE

Objective, Primary [Text Block]

rr_ObjectivePrimaryTextBlock

Perkins Global Value Fund seeks capital appreciation.

Expense [Heading]

rr_ExpenseHeading

FEES AND EXPENSES OF THE FUND

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. Each share class has different expenses, but represents an investment in the same Fund.

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 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 19% of the average value of its portfolio.

Portfolio Turnover, Rate

rr_PortfolioTurnoverRate

19.00%

Expense Breakpoint Discounts [Text]

rr_ExpenseBreakpointDiscounts

For Class A Shares, you may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $50,000 in the Fund or in other Janus mutual funds. More information about these and other discounts, as well as eligibility requirements for each share class, is available from your financial professional and in the “Purchases” section on page 39 of the Fund’s Prospectus and in the “Purchases” section on page 82 of the Fund’s Statement of Additional Information.

Expense Breakpoint, Minimum Investment Required [Amount]

rr_ExpenseBreakpointMinimumInvestmentRequiredAmount

50,000

Expense Example [Heading]

rr_ExpenseExampleHeading

EXAMPLE:

Expense Example by Year [Heading]

rr_ExpenseExampleByYearHeading

The Example assumes that you invest $10,000 in the Fund for the time periods indicated and reinvest all dividends and distributions. The Example also assumes that your investment has a 5% return each year and that the Fund’s operating expenses remain the same. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Expense Example Narrative [Text Block]

rr_ExpenseExampleNarrativeTextBlock

The Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds.

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 pursues its investment objective by investing primarily in common stocks of companies of any size that are economically tied to countries throughout the world, including emerging markets. The Fund normally invests in issuers from several different countries, which may include the United States. The Fund may, under unusual circumstances, invest in a single country. The Fund may also invest in U.S. and foreign equity and debt securities. In addition, when the portfolio managers believe that market conditions are unfavorable for investing, or when they are otherwise unable to locate attractive investment opportunities, the Fund’s cash or similar investments may increase.

The Fund focuses on companies that have fallen out of favor with the market or that appear to be temporarily misunderstood by the investment community. The Fund’s portfolio managers generally look for companies with:

• strong balance sheets and solid recurring free cash flows
• attractive relative and absolute valuation ratios or that have underperformed recently
• favorable reward to risk characteristics

The Fund may invest its assets in derivatives, which are instruments that have a value derived from, or directly linked to, an underlying asset, such as equity securities, fixed-income securities, commodities, currencies, interest rates, or market indices, as substitutes for securities in which the Fund invests. The Fund may invest in derivative instruments (by taking long and/or short positions) for different purposes, including hedging (to offset risks associated with an investment, currency exposure, or market conditions) and to earn income and enhance returns.

Risk [Heading]

rr_RiskHeading

PRINCIPAL INVESTMENT RISKS

Risk Narrative [Text Block]

rr_RiskNarrativeTextBlock

The biggest risk is that the Fund’s returns will vary, and you could lose money. The Fund is designed for long-term investors seeking an equity portfolio, including common stocks. Common stocks tend to be more volatile than many other investment choices.

Foreign Exposure Risk. The Fund normally has significant exposure to foreign markets as a result of its investments in foreign securities, including investments in emerging markets, which can be more volatile than the U.S. markets. As a result, its returns and net asset value may be affected to a large degree by fluctuations in currency exchange rates or political or economic conditions in a particular country. In some foreign markets, there may not be protection against failure by other parties to complete transactions. It may not be possible for the Fund to repatriate capital, dividends, interest, and other income from a particular country or governmental entity. In addition, a market swing in one or more countries or regions where the Fund has invested a significant amount of its assets may have a greater effect on the Fund’s performance than it would in a more geographically diversified portfolio. To the extent the Fund invests in foreign debt securities, such investments are sensitive to changes in interest rates. Additionally, investments in securities of foreign governments involve the risk that a foreign government may not be willing or able to pay interest or repay principal when due. The Fund’s investments in emerging market countries may involve risks greater than, or in addition to, the risks of investing in more developed countries.

Emerging Markets Risk. The risks of foreign investing mentioned above are heightened when investing in emerging markets. Emerging markets securities involve a number of additional risks, which may result from less government supervision and regulation of business and industry practices (including the potential lack of strict finance and accounting controls and standards), stock exchanges, brokers, and listed companies, making these investments potentially more volatile in price and less liquid than investments in developed securities markets, resulting in greater risk to investors. There is a risk in developing countries that a future economic or political crisis could lead to price controls, forced mergers of companies, expropriation or confiscatory taxation, imposition or enforcement of foreign ownership limits, seizure, nationalization, sanctions or imposition of restrictions by various governmental entities on investment and trading, or creation of government monopolies, any of which may have a detrimental effect on the Fund’s investments. In addition, the Fund’s investments may be denominated in foreign currencies and therefore, changes in the value of a country’s currency compared to the U.S. dollar may affect the value of the Fund’s investments. To the extent that the Fund invests a significant portion of its assets in the securities of issuers in or companies of a single country or region, it is more likely to be impacted by events or conditions affecting that country or region, which could have a negative impact on the Fund’s performance. Some of the risks of investing directly in foreign and emerging market securities may be reduced when the Fund invests indirectly in foreign securities through various other investment vehicles including derivatives, which also involve other risks. As of September 30, 2014, approximately 5.1% of the Fund’s investments were in emerging markets.

Value Investing Risk. Because different types of stocks tend to shift in and out of favor depending on market and economic conditions, “value” stocks may perform differently than other types of stocks and from the market as a whole, and can continue to be undervalued by the market for long periods of time. It is also possible that a value stock will never appreciate to the extent expected by the portfolio managers. When the Fund’s investments in cash or similar investments increase due to a lack of favorable investment opportunities or other extraordinary factors, the Fund may not participate in market advances or declines to the same extent that it would if the Fund had been fully invested.

Market Risk. The value of the Fund’s portfolio may decrease if the value of an individual company or security, or multiple companies or securities, in the portfolio decreases or if the portfolio managers’ belief about a company’s intrinsic worth is incorrect. Further, regardless of how well individual companies or securities perform, the value of the Fund’s portfolio could also decrease if there are deteriorating economic or market conditions. It is important to understand that the value of your investment may fall, sometimes sharply, in response to changes in the market, and you could lose money. Market risk may affect a single issuer, industry, economic sector, or the market as a whole.

Derivatives Risk. Derivatives can be highly volatile and involve risks in addition to the risks of the underlying referenced securities. Gains or losses from a derivative investment can be substantially greater than the derivative’s original cost, and can therefore involve leverage. Leverage may cause the Fund to be more volatile than if it had not used leverage. Derivatives can be less liquid than other types of investments and entail the risk that the counterparty will default on its payment obligations.

Management Risk. The Fund is an actively managed investment portfolio and is therefore subject to the risk that the investment strategies employed for the Fund may fail to produce the intended results. The Fund may underperform its benchmark index or other mutual funds with similar investment objectives.

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

Risk Lose Money [Text]

rr_RiskLoseMoney

The biggest risk is that the Fund’s returns will vary, and you could lose money.

Risk Not Insured Depository Institution [Text]

rr_RiskNotInsuredDepositoryInstitution

An investment in the Fund is not a bank deposit 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 INFORMATION

Performance Narrative [Text Block]

rr_PerformanceNarrativeTextBlock

The following information provides some indication of the risks of investing in the Fund by showing how the Fund’s performance has varied over time. Class T Shares (formerly named Class J Shares, the initial share class) of the Fund commenced operations with the Fund’s inception. Class A Shares, Class C Shares, Class S Shares, and Class I Shares of the Fund commenced operations on July 6, 2009. Class N Shares of the Fund commenced operations on May 31, 2012.

• The performance shown for Class T Shares is calculated using the fees and expenses of Class T Shares in effect during the periods shown, net of any applicable fee and expense limitations or waivers.
• The performance shown for Class A Shares, Class C Shares, and Class S Shares for periods prior to July 6, 2009, reflects the performance of the Fund’s former Class J Shares, calculated using the fees and expenses of each respective share class, without the effect of any fee and expense limitations or waivers.
• The performance shown for Class I Shares for periods prior to July 6, 2009, reflects the performance of the Fund’s former Class J Shares, calculated using the fees and expenses of Class J Shares, net of any applicable fee and expense limitations or waivers.
• The performance shown for Class N Shares for periods prior to May 31, 2012, reflects the performance of the Fund’s Class T Shares, calculated using the fees and expenses of Class T Shares, net of any applicable fee and expense limitations or waivers.

If Class A Shares, Class C Shares, Class S Shares, and Class I Shares of the Fund had been available during periods prior to July 6, 2009, or Class N Shares of the Fund had been available during periods prior to May 31, 2012, the performance shown for each respective share class may have been different. The performance shown for periods following the Fund’s commencement of Class A Shares, Class C Shares, Class S Shares, Class I Shares, and Class N Shares reflects the fees and expenses of each respective share class, net of any applicable fee and expense limitations or waivers.

The bar chart depicts the change in performance from year to year during the periods indicated. The bar chart figures do not include any applicable sales charges that an investor may pay when they buy or sell Class A Shares or Class C Shares of the Fund. If sales charges were included, the returns would be lower. The table compares the Fund’s average annual returns for the periods indicated to broad-based securities market indices. The indices are not actively managed and are not available for direct investment. All figures assume reinvestment of dividends and distributions.

The Fund’s past performance (before and after taxes) does not necessarily indicate how it will perform in the future. Updated performance information is available at janus.com/advisor/mutual-funds or by calling 1-877-335-2687.

Performance Information Illustrates Variability of Returns [Text]

rr_PerformanceInformationIllustratesVariabilityOfReturns

The following information provides some indication of the risks of investing in the Fund by showing how the Fund’s performance has varied over time.

The bar chart depicts the change in performance from year to year during the periods indicated.

Performance Additional Market Index [Text]

rr_PerformanceAdditionalMarketIndex

The table compares the Fund’s average annual returns for the periods indicated to broad-based securities market indices. The indices are not actively managed and are not available for direct investment. All figures assume reinvestment of dividends and distributions.

Performance Availability Phone [Text]

rr_PerformanceAvailabilityPhone

1-877-335-2687

Performance Availability Website Address [Text]

rr_PerformanceAvailabilityWebSiteAddress

janus.com/advisor/mutual-funds

Performance Past Does Not Indicate Future [Text]

rr_PerformancePastDoesNotIndicateFuture

The Fund’s past performance (before and after taxes) does not necessarily indicate how it will perform in the future.

Bar Chart [Heading]

rr_BarChartHeading

Annual Total Returns for Class T Shares (calendar year-end)

Bar Chart Does Not Reflect Sales Loads [Text]

rr_BarChartDoesNotReflectSalesLoads

The bar chart figures do not include any applicable sales charges that an investor may pay when they buy or sell Class A Shares or Class C Shares of the Fund. If sales charges were included, the returns would be lower.

Bar Chart Closing [Text Block]

rr_BarChartClosingTextBlock

Best Quarter:  2nd Quarter 2009  26.07%          Worst Quarter:  4th Quarter 2008  −18.02%

Performance Table Heading

rr_PerformanceTableHeading

Average Annual Total Returns (periods ended 12/31/14)

Performance Table Uses Highest Federal Rate

rr_PerformanceTableUsesHighestFederalRate

After-tax returns are calculated using the historically 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

Actual after-tax returns depend on your individual tax situation and may differ from those shown in the preceding table. The after-tax return information shown above does not apply to Fund shares held through a tax-deferred account, such as a 401(k) plan or an IRA.

Performance Table One Class of after Tax Shown [Text]

rr_PerformanceTableOneClassOfAfterTaxShown

After-tax returns are only shown for Class T Shares of the Fund. After-tax returns for the other classes of Shares will vary from those shown for Class T Shares due to varying sales charges (as applicable), fees, and expenses among the classes.

Performance Table Explanation after Tax Higher

rr_PerformanceTableExplanationAfterTaxHigher

If the Fund incurs a loss, which generates a tax benefit, the Return After Taxes on Distributions and Sale of Fund Shares may exceed the Fund’s other return figures.

Performance Table Narrative

rr_PerformanceTableNarrativeTextBlock

The MSCI World Index^SM is a free float-adjusted market capitalization weighted index that is designed to measure the equity market performance of developed market countries in North America, Europe, and the Asia/Pacific Region. The index includes reinvestment of dividends, net of foreign withholding taxes. This index is used to calculate the performance fee adjustment.

The MSCI All Country World Index^SM is an unmanaged, free float-adjusted, market capitalization weighted index composed of stocks of companies located in countries throughout the world. It is designed to measure equity market performance in global developed and emerging markets. The index includes reinvestment of dividends, net of foreign withholding taxes.

After-tax returns are calculated using distributions for the Fund’s Class T Shares (formerly named Class J Shares, the initial share class). After-tax returns are calculated using the historically highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. Actual after-tax returns depend on your individual tax situation and may differ from those shown in the preceding table. The after-tax return information shown above does not apply to Fund shares held through a tax-deferred account, such as a 401(k) plan or an IRA.

After-tax returns are only shown for Class T Shares of the Fund. After-tax returns for the other classes of Shares will vary from those shown for Class T Shares due to varying sales charges (as applicable), fees, and expenses among the classes.

Performance Table Closing [Text Block]

rr_PerformanceTableClosingTextBlock

Updated performance information is available at janus.com/advisor/mutual-funds or by calling 1-877-335-2687.

Perkins Global Value Fund | Class A, C, S, I, N, T Shares | Class A

Risk/Return:

rr_RiskReturnAbstract

Shareholder Fees Column [Text]

rr_ShareholderFeesColumnName

Class A

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 the lower of original purchase price or redemption proceeds)

rr_MaximumDeferredSalesChargeOverOther

none

Operating Expenses Column [Text]

rr_OperatingExpensesColumnName

Class A

Management Fees (may adjust up or down)

rr_ManagementFeesOverAssets

0.64%

Distribution/Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

0.25%

Other Expenses

rr_OtherExpensesOverAssets

0.20%

Total Annual Fund Operating Expenses

rr_ExpensesOverAssets

1.09%

Expense Example, By Year, Column [Text]

rr_ExpenseExampleByYearColumnName

Class A Shares

1 Year

rr_ExpenseExampleYear01

680

3 Years

rr_ExpenseExampleYear03

902

5 Years

rr_ExpenseExampleYear05

1,141

10 Years

rr_ExpenseExampleYear10

1,827

Expense Example, No Redemption, By Year, Column [Text]

rr_ExpenseExampleNoRedemptionByYearColumnName

Class A Shares

1 Year

rr_ExpenseExampleNoRedemptionYear01

680

3 Years

rr_ExpenseExampleNoRedemptionYear03

902

5 Years

rr_ExpenseExampleNoRedemptionYear05

1,141

10 Years

rr_ExpenseExampleNoRedemptionYear10

1,827

Perkins Global Value Fund | Class A, C, S, I, N, T Shares | Class C

Risk/Return:

rr_RiskReturnAbstract

Shareholder Fees Column [Text]

rr_ShareholderFeesColumnName

Class C

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 the lower of original purchase price or redemption proceeds)

rr_MaximumDeferredSalesChargeOverOther

1.00%

Operating Expenses Column [Text]

rr_OperatingExpensesColumnName

Class C

Management Fees (may adjust up or down)

rr_ManagementFeesOverAssets

0.64%

Distribution/Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

1.00%

Other Expenses

rr_OtherExpensesOverAssets

0.21%

Total Annual Fund Operating Expenses

rr_ExpensesOverAssets

1.85%

Expense Example, By Year, Column [Text]

rr_ExpenseExampleByYearColumnName

Class C Shares

1 Year

rr_ExpenseExampleYear01

288

3 Years

rr_ExpenseExampleYear03

582

5 Years

rr_ExpenseExampleYear05

1,001

10 Years

rr_ExpenseExampleYear10

2,169

Expense Example, No Redemption, By Year, Column [Text]

rr_ExpenseExampleNoRedemptionByYearColumnName

Class C Shares

1 Year

rr_ExpenseExampleNoRedemptionYear01

188

3 Years

rr_ExpenseExampleNoRedemptionYear03

582

5 Years

rr_ExpenseExampleNoRedemptionYear05

1,001

10 Years

rr_ExpenseExampleNoRedemptionYear10

2,169

Perkins Global Value Fund | Class A, C, S, I, N, T Shares | Class S

Risk/Return:

rr_RiskReturnAbstract

Shareholder Fees Column [Text]

rr_ShareholderFeesColumnName

Class S

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 the lower of original purchase price or redemption proceeds)

rr_MaximumDeferredSalesChargeOverOther

none

Operating Expenses Column [Text]

rr_OperatingExpensesColumnName

Class S

Management Fees (may adjust up or down)

rr_ManagementFeesOverAssets

0.64%

Distribution/Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

0.25%

Other Expenses

rr_OtherExpensesOverAssets

0.37%

Total Annual Fund Operating Expenses

rr_ExpensesOverAssets

1.26%

Expense Example, By Year, Column [Text]

rr_ExpenseExampleByYearColumnName

Class S Shares

1 Year

rr_ExpenseExampleYear01

128

3 Years

rr_ExpenseExampleYear03

400

5 Years

rr_ExpenseExampleYear05

692

10 Years

rr_ExpenseExampleYear10

1,523

Expense Example, No Redemption, By Year, Column [Text]

rr_ExpenseExampleNoRedemptionByYearColumnName

Class S Shares

1 Year

rr_ExpenseExampleNoRedemptionYear01

128

3 Years

rr_ExpenseExampleNoRedemptionYear03

400

5 Years

rr_ExpenseExampleNoRedemptionYear05

692

10 Years

rr_ExpenseExampleNoRedemptionYear10

1,523

Perkins Global Value Fund | Class A, C, S, I, N, T Shares | Class I

Risk/Return:

rr_RiskReturnAbstract

Shareholder Fees Column [Text]

rr_ShareholderFeesColumnName

Class I

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 the lower of original purchase price or redemption proceeds)

rr_MaximumDeferredSalesChargeOverOther

none

Operating Expenses Column [Text]

rr_OperatingExpensesColumnName

Class I

Management Fees (may adjust up or down)

rr_ManagementFeesOverAssets

0.64%

Distribution/Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

none

Other Expenses

rr_OtherExpensesOverAssets

0.17%

Total Annual Fund Operating Expenses

rr_ExpensesOverAssets

0.81%

Expense Example, By Year, Column [Text]

rr_ExpenseExampleByYearColumnName

Class I Shares

1 Year

rr_ExpenseExampleYear01

83

3 Years

rr_ExpenseExampleYear03

259

5 Years

rr_ExpenseExampleYear05

450

10 Years

rr_ExpenseExampleYear10

1,002

Expense Example, No Redemption, By Year, Column [Text]

rr_ExpenseExampleNoRedemptionByYearColumnName

Class I Shares

1 Year

rr_ExpenseExampleNoRedemptionYear01

83

3 Years

rr_ExpenseExampleNoRedemptionYear03

259

5 Years

rr_ExpenseExampleNoRedemptionYear05

450

10 Years

rr_ExpenseExampleNoRedemptionYear10

1,002

Perkins Global Value Fund | Class A, C, S, I, N, T Shares | Class N

Risk/Return:

rr_RiskReturnAbstract

Shareholder Fees Column [Text]

rr_ShareholderFeesColumnName

Class N

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 the lower of original purchase price or redemption proceeds)

rr_MaximumDeferredSalesChargeOverOther

none

Operating Expenses Column [Text]

rr_OperatingExpensesColumnName

Class N

Management Fees (may adjust up or down)

rr_ManagementFeesOverAssets

0.64%

Distribution/Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

none

Other Expenses

rr_OtherExpensesOverAssets

0.12%

Total Annual Fund Operating Expenses

rr_ExpensesOverAssets

0.76%

Expense Example, By Year, Column [Text]

rr_ExpenseExampleByYearColumnName

Class N Shares

1 Year

rr_ExpenseExampleYear01

78

3 Years

rr_ExpenseExampleYear03

243

5 Years

rr_ExpenseExampleYear05

422

10 Years

rr_ExpenseExampleYear10

942

Expense Example, No Redemption, By Year, Column [Text]

rr_ExpenseExampleNoRedemptionByYearColumnName

Class N Shares

1 Year

rr_ExpenseExampleNoRedemptionYear01

78

3 Years

rr_ExpenseExampleNoRedemptionYear03

243

5 Years

rr_ExpenseExampleNoRedemptionYear05

422

10 Years

rr_ExpenseExampleNoRedemptionYear10

942

Perkins Global Value Fund | Class A, C, S, I, N, T Shares | Class T

Risk/Return:

rr_RiskReturnAbstract

Shareholder Fees Column [Text]

rr_ShareholderFeesColumnName

Class T

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 the lower of original purchase price or redemption proceeds)

rr_MaximumDeferredSalesChargeOverOther

none

Operating Expenses Column [Text]

rr_OperatingExpensesColumnName

Class T

Management Fees (may adjust up or down)

rr_ManagementFeesOverAssets

0.64%

Distribution/Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

none

Other Expenses

rr_OtherExpensesOverAssets

0.37%

Total Annual Fund Operating Expenses

rr_ExpensesOverAssets

1.01%

Expense Example, By Year, Column [Text]

rr_ExpenseExampleByYearColumnName

Class T Shares

1 Year

rr_ExpenseExampleYear01

103

3 Years

rr_ExpenseExampleYear03

322

5 Years

rr_ExpenseExampleYear05

558

10 Years

rr_ExpenseExampleYear10

1,236

Expense Example, No Redemption, By Year, Column [Text]

rr_ExpenseExampleNoRedemptionByYearColumnName

Class T Shares

1 Year

rr_ExpenseExampleNoRedemptionYear01

103

3 Years

rr_ExpenseExampleNoRedemptionYear03

322

5 Years

rr_ExpenseExampleNoRedemptionYear05

558

10 Years

rr_ExpenseExampleNoRedemptionYear10

1,236

2005

rr_AnnualReturn2005

4.07%

2006

rr_AnnualReturn2006

11.19%

2007

rr_AnnualReturn2007

12.10%

2008

rr_AnnualReturn2008

(37.83%)

2009

rr_AnnualReturn2009

31.96%

2010

rr_AnnualReturn2010

11.23%

2011

rr_AnnualReturn2011

1.70%

2012

rr_AnnualReturn2012

11.69%

2013

rr_AnnualReturn2013

21.06%

2014

rr_AnnualReturn2014

5.36%

Highest Quarterly Return, Label

rr_HighestQuarterlyReturnLabel

Best Quarter:

Highest Quarterly Return, Date

rr_BarChartHighestQuarterlyReturnDate

Jun. 30, 2009

Highest Quarterly Return

rr_BarChartHighestQuarterlyReturn

26.07%

Lowest Quarterly Return, Label

rr_LowestQuarterlyReturnLabel

Worst Quarter:

Lowest Quarterly Return, Date

rr_BarChartLowestQuarterlyReturnDate

Dec. 31, 2008

Lowest Quarterly Return

rr_BarChartLowestQuarterlyReturn

(18.02%)

Perkins Global Value Fund | Class A, C, S, I, N, T Shares | Return Before Taxes | Class A

Risk/Return:

rr_RiskReturnAbstract

Column

rr_AverageAnnualReturnColumnName

Class A Shares

Label

rr_AverageAnnualReturnLabel

Return Before Taxes

^[1]

1 Year

rr_AverageAnnualReturnYear01

(0.76%)

5 Years

rr_AverageAnnualReturnYear05

8.62%

10 Years

rr_AverageAnnualReturnYear10

4.75%

Since Inception

rr_AverageAnnualReturnSinceInception

6.27%

Inception Date

rr_AverageAnnualReturnInceptionDate

Jun. 29, 2001

Perkins Global Value Fund | Class A, C, S, I, N, T Shares | Return Before Taxes | Class C

Risk/Return:

rr_RiskReturnAbstract

Column

rr_AverageAnnualReturnColumnName

Class C Shares

Label

rr_AverageAnnualReturnLabel

Return Before Taxes

^[2]

1 Year

rr_AverageAnnualReturnYear01

3.54%

5 Years

rr_AverageAnnualReturnYear05

9.28%

10 Years

rr_AverageAnnualReturnYear10

4.66%

Since Inception

rr_AverageAnnualReturnSinceInception

6.01%

Inception Date

rr_AverageAnnualReturnInceptionDate

Jun. 29, 2001

Perkins Global Value Fund | Class A, C, S, I, N, T Shares | Return Before Taxes | Class S

Risk/Return:

rr_RiskReturnAbstract

Column

rr_AverageAnnualReturnColumnName

Class S Shares

Label

rr_AverageAnnualReturnLabel

Return Before Taxes

1 Year

rr_AverageAnnualReturnYear01

5.12%

5 Years

rr_AverageAnnualReturnYear05

9.76%

10 Years

rr_AverageAnnualReturnYear10

5.29%

Since Inception

rr_AverageAnnualReturnSinceInception

6.64%

Inception Date

rr_AverageAnnualReturnInceptionDate

Jun. 29, 2001

Perkins Global Value Fund | Class A, C, S, I, N, T Shares | Return Before Taxes | Class I

Risk/Return:

rr_RiskReturnAbstract

Column

rr_AverageAnnualReturnColumnName

Class I Shares

Label

rr_AverageAnnualReturnLabel

Return Before Taxes

1 Year

rr_AverageAnnualReturnYear01

5.58%

5 Years

rr_AverageAnnualReturnYear05

10.10%

10 Years

rr_AverageAnnualReturnYear10

5.54%

Since Inception

rr_AverageAnnualReturnSinceInception

6.92%

Inception Date

rr_AverageAnnualReturnInceptionDate

Jun. 29, 2001

Perkins Global Value Fund | Class A, C, S, I, N, T Shares | Return Before Taxes | Class N

Risk/Return:

rr_RiskReturnAbstract

Column

rr_AverageAnnualReturnColumnName

Class N Shares

Label

rr_AverageAnnualReturnLabel

Return Before Taxes

1 Year

rr_AverageAnnualReturnYear01

5.70%

5 Years

rr_AverageAnnualReturnYear05

10.01%

10 Years

rr_AverageAnnualReturnYear10

5.54%

Since Inception

rr_AverageAnnualReturnSinceInception

6.92%

Inception Date

rr_AverageAnnualReturnInceptionDate

Jun. 29, 2001

Perkins Global Value Fund | Class A, C, S, I, N, T Shares | Return Before Taxes | Class T

Risk/Return:

rr_RiskReturnAbstract

Column

rr_AverageAnnualReturnColumnName

Class T Shares

Label

rr_AverageAnnualReturnLabel

Return Before Taxes

1 Year

rr_AverageAnnualReturnYear01

5.36%

5 Years

rr_AverageAnnualReturnYear05

10.01%

10 Years

rr_AverageAnnualReturnYear10

5.54%

Since Inception

rr_AverageAnnualReturnSinceInception

6.92%

Inception Date

rr_AverageAnnualReturnInceptionDate

Jun. 29, 2001

Perkins Global Value Fund | Class A, C, S, I, N, T Shares | Return After Taxes on Distributions | Class T

Risk/Return:

rr_RiskReturnAbstract

Column

rr_AverageAnnualReturnColumnName

Class T Shares

Label

rr_AverageAnnualReturnLabel

Return After Taxes on Distributions

1 Year

rr_AverageAnnualReturnYear01

3.93%

5 Years

rr_AverageAnnualReturnYear05

8.91%

10 Years

rr_AverageAnnualReturnYear10

4.51%

Since Inception

rr_AverageAnnualReturnSinceInception

6.14%

Inception Date

rr_AverageAnnualReturnInceptionDate

Jun. 29, 2001

Perkins Global Value Fund | Class A, C, S, I, N, T Shares | Return After Taxes on Distributions and Sale of Fund Shares | Class T

Risk/Return:

rr_RiskReturnAbstract

Column

rr_AverageAnnualReturnColumnName

Class T Shares

Label

rr_AverageAnnualReturnLabel

Return After Taxes on Distributions and Sale of Fund Shares

^[3]

1 Year

rr_AverageAnnualReturnYear01

4.22%

5 Years

rr_AverageAnnualReturnYear05

7.99%

10 Years

rr_AverageAnnualReturnYear10

4.46%

Since Inception

rr_AverageAnnualReturnSinceInception

5.74%

Inception Date

rr_AverageAnnualReturnInceptionDate

Jun. 29, 2001

Perkins Global Value Fund | Class A, C, S, I, N, T Shares | MSCI World Index℠ (reflects no deduction for expenses, fees, or taxes, except foreign withholding taxes)

Risk/Return:

rr_RiskReturnAbstract

Label

rr_AverageAnnualReturnLabel

MSCI World Index^SM

1 Year

rr_AverageAnnualReturnYear01

4.94%

5 Years

rr_AverageAnnualReturnYear05

10.20%

10 Years

rr_AverageAnnualReturnYear10

6.03%

Since Inception

rr_AverageAnnualReturnSinceInception

5.43%

Inception Date

rr_AverageAnnualReturnInceptionDate

Jun. 29, 2001

Perkins Global Value Fund | Class A, C, S, I, N, T Shares | MSCI All Country World Index℠ (reflects no deduction for expenses, fees, or taxes, except foreign withholding taxes)

Risk/Return:

rr_RiskReturnAbstract

Label

rr_AverageAnnualReturnLabel

MSCI All Country World Index^SM

1 Year

rr_AverageAnnualReturnYear01

4.16%

5 Years

rr_AverageAnnualReturnYear05

9.17%

10 Years

rr_AverageAnnualReturnYear10

6.09%

Since Inception

rr_AverageAnnualReturnSinceInception

5.64%

Inception Date

rr_AverageAnnualReturnInceptionDate

Jun. 29, 2001

[1] Calculated assuming maximum permitted sales loads.

[2] The one year return is calculated to include the contingent deferred sales charge.

[3] If the Fund incurs a loss, which generates a tax benefit, the Return After Taxes on Distributions and Sale of Fund Shares may exceed the Fund’s other return figures.