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First Eagle Global Income Builder Fund  
Risk/Return: rr_RiskReturnAbstract  
Risk/Return [Heading] rr_RiskReturnHeading First Eagle Global Income Builder Fund
Objective [Heading] rr_ObjectiveHeading Investment Objective
Objective, Primary [Text Block] rr_ObjectivePrimaryTextBlock

First Eagle Global Income Builder Fund (“Global Income Builder Fund”) seeks current income generation and long-term growth of capital.

Expense [Heading] rr_ExpenseHeading Fees and Expenses of the Global Income Builder Fund
Expense Narrative [Text Block] rr_ExpenseNarrativeTextBlock

The following information describes the fees and expenses you may pay if you buy and hold shares of the Global Income Builder Fund.


You may qualify for sales charge discounts if you, together with certain related accounts, invest, or agree to invest in the future, at least $25,000 in the Global Income Builder Fund. Information about these and other discounts is available from your financial professional and in the How to Purchase Shares and Public Offering Price of Class A Shares sections on pages 104 and 111, respectively, and in the appendix to this Prospectus titled Intermediary-Specific Front-End Sales Load and Waiver Terms.

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 you pay each year as a percentage of the value of your investment)
Portfolio Turnover [Heading] rr_PortfolioTurnoverHeading Portfolio Turnover Rate
Portfolio Turnover [Text Block] rr_PortfolioTurnoverTextBlock

There are transaction costs due to the bid/ask spread in the case of bonds or commissions in the case of stocks. The Global Income Builder Fund pays transaction costs when the Fund 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 above, affect the Fund’s performance. During the Fund’s most recent fiscal year, the Fund’s portfolio turnover rate was 25.54% of the average value of its portfolio.

Portfolio Turnover, Rate rr_PortfolioTurnoverRate 25.54%
Expense Breakpoint Discounts [Text] rr_ExpenseBreakpointDiscounts You may qualify for sales charge discounts if you, together with certain related accounts, invest, or agree to invest in the future, at least $25,000 in the Global Income Builder Fund.
Expense Breakpoint, Minimum Investment Required [Amount] rr_ExpenseBreakpointMinimumInvestmentRequiredAmount $ 25,000
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 Global Income Builder Fund with the cost of investing in other mutual funds. This hypothetical example assumes you invest $10,000 in the Fund for the time periods indicated and then either redeem or do not redeem all shares at the end of those periods. The example also assumes the average annual return is 5% and operating expenses remain the same. Please keep in mind your actual costs may be higher or lower.

Expense Example by, Year, Caption [Text] rr_ExpenseExampleByYearCaption Sold
Expense Example, No Redemption, By Year, Caption [Text] rr_ExpenseExampleNoRedemptionByYearCaption Held
Strategy [Heading] rr_StrategyHeading Principal Investment Strategies
Strategy Narrative [Text Block] rr_StrategyNarrativeTextBlock

To achieve its objective of current income generation and long-term growth of capital, the Global Income Builder Fund will normally invest primarily in common stocks of U.S. and foreign companies that offer attractive dividend yields as well as a range of fixed income instruments, including high-yield, below investment grade instruments (commonly referred to as “junk bonds”), investment grade instruments and sovereign debt, from markets in the United States and multiple countries around the world.


Investment decisions for the Global Income Builder Fund are made without regard to the capitalization (size) of the companies in which it invests. The Fund may invest in any size company, including large, medium and smaller companies. Under normal circumstances, the Fund anticipates it will allocate a substantial amount of its assets to income-producing securities. That generally means that approximately 80% or more of the Fund’s net assets (plus any borrowings for investment purposes) will be allocated to such investments, which may include dividend paying equities, both high-yield (below investment grade) and investment grade debt, sovereign bonds, and various short-term debt instruments. The Fund may invest in securities with any maturity or investment rating, as well as unrated securities. The Fund may also invest (typically for hedging purposes) in derivative instruments such as options, futures contracts and options on futures contracts, credit default swaps, and swaps and options on indices.


Additionally, under normal circumstances, the Fund anticipates it will allocate a substantial amount of its assets to foreign investments. That generally means that approximately 40% or more of the Fund’s net assets (plus any borrowings for investment purposes) will be allocated to foreign investments (unless market conditions are not deemed favorable by the Fund, in which case the Fund expects to invest at least 30% of its net assets (plus any borrowings for investment purposes) in foreign investments). For purposes of these 80%, 40% and 30% of assets allocations, the Fund “counts” relevant derivative positions on investments, and in doing so, values each position at the price at which it is held on the Fund’s books (generally market price).


The investment philosophy and strategy of the Global Income Builder Fund can be broadly characterized as a “value” approach, as it seeks a “margin of safety” in each investment purchase with the goal being to avoid permanent impairment of capital (as opposed to temporary losses in share value relating to shifting investor sentiment or other normal share price volatility). With respect to equity investments in particular, a discount to “intrinsic value” is sought even for what appear to be the best of businesses, with a deeper discount demanded for companies that we view as under business model, balance sheet, management or other stresses. “Intrinsic value” is based on our judgment of what a prudent and rational business buyer would pay in cash for all of the company in normal markets. Investments in debt instruments are made after careful scrutiny of the underlying creditworthiness of the issuer, taking into account such factors as cash flow generation, liquidation value and structural protections. The Global Income Builder Fund seeks to own debt instruments that offer an attractive “margin of safety” on principal repayment relative to the total expected return of the security.

Risk [Heading] rr_RiskHeading Principal Investment Risks
Risk Narrative [Text Block] rr_RiskNarrativeTextBlock

As with any mutual fund investment, you may lose money by investing in the Global Income Builder Fund. The likelihood of loss may be greater if you invest for a shorter period of time. An investment in the Fund is not intended to be a complete investment program.


Principal risks of investing in the Global Income Builder Fund, which could adversely affect its net asset value and total return, are:


 

 

Market Risk — The value of the Fund’s portfolio holdings may fluctuate in response to events specific to the companies or markets in which the Fund invests, as well as economic, political, or social events in the United States or abroad. Markets can be volatile, and values of individual securities and other investments at times may decline significantly and rapidly. Recent market conditions and events, including a global public health crisis and actions taken by governments in response, may exacerbate volatility.

 

 

Equity Risk — The value of the Fund’s portfolio holdings may fluctuate in response to the risk that the prices of equity securities, including common stock, rise and fall daily. These price movements may result from factors affecting individual companies, industries or the securities market as a whole. In addition, equity markets tend to move in cycles, which may cause stock prices to fall over short or extended periods of time. Equity securities generally have greater price volatility than debt securities.

 

 

Foreign Investment Risk — The Fund may invest in foreign investments (including American Depositary Receipts (“ADRs”), Global Depositary Receipts (“GDRs”) and European Depositary Receipts (“EDRs”), and through foreign currency). Foreign investments are susceptible to less politically, economically and socially stable environments, foreign currency and exchange rate changes, and adverse changes to government regulations. While depositary receipts provide an alternative to directly purchasing the underlying foreign securities in their respective national markets and currencies, investments in ADRs, GDRs and EDRs continue to be subject to many of the risks associated with investing directly in foreign investments. The Fund’s investments also may subject it to the risks associated with investing in the European markets, including the risks associated with the United Kingdom’s exit from the European Union (“Brexit”).

 

 

Credit and Interest Rate Risk — The value of the Fund’s portfolio may fluctuate in response to the risk that the issuer of a bond or other instrument will not be able to make payments of interest and principal when due. The Fund may invest in debt instruments that are below investment grade, commonly known as “high yield” or “junk” bonds, which are considered speculative, and carry a higher risk of default. In addition, fluctuations in interest rates can affect the value of debt instruments held by the Fund. A debt instrument’s “duration” is a way of measuring a debt instrument’s sensitivity to a potential change in interest rates. An increase in interest rates tends to reduce the market value of debt instruments, while a decline in interest rates tends to increase their values. Generally, debt instruments with long maturities and low coupons have the longest durations. Longer-duration instruments tend to be more sensitive to interest rate changes than those with shorter durations. Recent market conditions and events, including a global public health crisis and actions taken by governments in response, may exacerbate the risk that borrowers will not be able to make payments of interest and principal when due. In addition, with historically low interest rates in the United States and abroad, there is risk of significant future rate moves and related economic and market impacts.

 

 

Prepayment Risk — Certain instruments, especially mortgage-backed securities, for example, are susceptible to the risk of prepayment by borrowers. During a period of declining interest rates, homeowners may refinance their high-rate mortgages and prepay the principal. Cash from these prepayments flows through to prepay the mortgage-backed securities, necessitating reinvestment in other assets, which may lower returns. Asset-backed securities, which are subject to risks similar to those of mortgage-backed securities, are also structured like mortgage-backed securities, but instead of mortgage loans or interests in mortgage loans, the underlying assets may include such items as motor vehicle installment sales or installment loan contracts, leases of various types of real and personal property and receivables from credit card agreements. The market for mortgage-backed and asset-backed instruments may be volatile and limited, which may make them difficult to buy or sell.


 

 

Dividend Risk — There is no guarantee that issuers of the securities held by the Fund will declare dividends in the future or that, if declared, they will be paid, or that they will either remain at current levels or increase over time.

 

 

Changes in Debt Ratings Risk — If a rating agency gives a debt instrument a lower rating, the value of the instrument may decline because investors may demand a higher rate of return.

 

 

Defaulted Securities Risk — The Fund may invest in securities of companies that are experiencing significant financial or business difficulties, including companies involved in bankruptcy or other reorganization and liquidation proceedings. Such investments involve a substantial degree of risk. In any reorganization or liquidation proceeding relating to a company in which the Fund invests, the Fund may lose its entire investment, may be required to accept cash or securities with a value less than the Fund’s original investment, and/or may be required to accept payment over an extended period of time.

 

 

High Yield Risk — The Fund intends to invest in high yield instruments (commonly known as “high yield” or “junk” bonds) which may be subject to greater levels of interest rate, credit (including issuer default) and liquidity risk than investment grade instruments and may experience extreme price fluctuations. The securities of such companies may be considered speculative and the ability of such companies to pay their debts on schedule may be uncertain.

 

 

Gold Risk — The Fund may invest in both physical gold and the securities of companies in the gold mining sector. Prices of gold-related issues are susceptible to changes in U.S. and foreign regulatory policies, taxes, currencies, mining laws, inflation, and various other market conditions. Gold-related investments as a group have not performed as well as the stock market in general during periods when the U.S. dollar is strong, inflation is low and general economic conditions are stable. In addition, returns on gold-related investments have traditionally been more volatile than investments in broader equity or debt markets.

 

 

Derivatives Risk — Futures contracts or other “derivatives,” including hedging strategies, present risks related to their significant price volatility and risk of default by the counterparty to the contract. To date, derivatives have been used mainly under a hedging program that seeks to reduce the impact of foreign exchange rate changes on the Fund’s value. The Fund may at times also purchase derivatives as either a hedge or for investment purposes. A futures contract is considered a derivative because it derives its value from the price of the underlying security or financial index. The prices of futures contracts can be volatile and futures contracts may lack liquidity. In addition, there may be imperfect or even negative correlation between the price of a futures contract and the price of the underlying securities or financial index.

 

 

Options Risk — The Fund may engage in various options transactions in which the Fund typically seeks to limit investment risk by purchasing the right to buy or sell, or by selling the obligation to buy or sell, a security at a set price in the future. The Fund pays a premium when buying options and receives a premium when selling options. When trading options, the Fund may incur losses or forego otherwise realizable gains if market prices do not move as expected.

 

 

Swaps Risk — Swap agreements (including credit default and index) are derivatives contracts where the parties agree to exchange the returns (or differentials in rates of return) earned or realized on particular predetermined investments or instruments. In addition to the risks generally applicable to derivatives, risks associated with swap agreements include adverse changes in the returns of the underlying instruments, failure of the counterparties to perform under the agreement’s terms and the possible lack of liquidity with respect to the agreements.

 

 

Currency Risk — Currency risk is the risk that foreign currencies will decline in value relative to that of the U.S. dollar and affect the Fund’s non-U.S. currencies or securities that trade in and receive revenue in non-U.S. currencies.

 

 

Small and Medium-Size Company Risk — The Fund may invest in small and medium-size companies, the securities of which can be more volatile in price than those of larger companies. Positions in smaller companies, especially when the Fund is a large holder of a small company’s securities, also may be more difficult or expensive to trade. The Fund considers small companies to be companies with market capitalizations of less than $1 billion and medium-size companies to have market capitalizations of less than $10 billion.

 

 

Large-Size Company Risk — The Fund may invest in larger, more established companies, the securities of which may be unable to respond quickly to new competitive challenges like changes in consumer tastes or innovative smaller competitors. Larger companies are sometimes unable to attain the high growth rates of successful, smaller companies, especially during extended periods of economic expansion. The Fund considers large companies to be companies with market capitalizations of $10 billion or greater.

 

 

Bank Loan Risk — The Fund may invest in bank loans. These investments potentially expose the Fund to the credit risk of the underlying borrower, and in certain cases, of the financial institution. The Fund’s ability to receive payments in connection with the loan depends primarily on the financial condition of the borrower. The market for bank loans may be illiquid and the Fund may have difficulty selling them, especially in the case of leveraged loans, which can be difficult to value. In addition, bank loans often have contractual restrictions on resale, which can delay the sale and adversely impact the sale price. At times, the Fund may decline to receive non-public information relating to loans, which could disadvantage the Fund relative to other investors.

 

 

Real Estate Industry Risk — The Fund may invest in real estate investment trusts (“REITs”), which are subject to risks affecting the real estate industry generally (including market conditions, competition, property obsolescence, changes in interest rates and casualty to real estate), as well as risks specifically affecting REITs (the quality and skill of REIT management and the internal expenses of the REIT).

 

 

Sovereign Debt Risk — The Fund’s investments in debt obligations of sovereign governments may lose value due to the government entity’s unwillingness or inability to repay principal and interest when due in accordance with the terms of the debt or otherwise in a timely manner. The Fund may have limited (or no) recourse in the event of a default because bankruptcy, moratorium and other similar laws applicable to issuers of sovereign debt obligations may be substantially different from those applicable to private issuers and any recourse may be subject to the political climate in the relevant country.

 

 

Value Investment Strategy Risk — An investment made at a perceived “margin of safety” or “discount to intrinsic or fundamental value” can trade at prices substantially lower than when an investment is made, so that any perceived “margin of safety” or “discount to value” is no guarantee against loss. “Value” investments, as a category, or entire industries or sectors associated with such investments, may lose favor with investors as compared to those that are more “growth” oriented. In such an event, the Fund’s investment returns would be expected to lag relative to returns associated with more growth-oriented investment strategies. Investing in or having exposure to “value” securities presents the risk that such securities may never reach what the Adviser believes are their full market values.


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


For more information on the risks of investing in the Global Income Builder Fund, please see the More Information about the Funds’ Investments section.

Risk Lose Money [Text] rr_RiskLoseMoney As with any mutual fund investment, you may lose money by investing in the Global Income Builder Fund.
RIsk Not Insured [Text] rr_RiskNotInsured An investment in the Fund is not a bank deposit and is not insured or guaranteed by the Federal Deposit Insurance Corporation (FDIC) or any other government agency.
Bar Chart and Performance Table [Heading] rr_BarChartAndPerformanceTableHeading Investment Results
Performance Narrative [Text Block] rr_PerformanceNarrativeTextBlock

The following information provides an indication of the risks of investing in the Global Income Builder Fund by showing changes in the Fund’s performance from year to year, and by showing how the Fund’s average annual returns for the periods shown compare with those of one or more broad measures of market performance, which have characteristics relevant to the Fund’s investment strategy. As with all mutual funds, past performance is not an indication of future performance (before or after taxes).


After-tax returns are calculated using the highest individual U.S. federal income tax rate for each year, and do not reflect the effect of state and local taxes. Actual after-tax returns depend on your individual tax situation. After-tax returns are not relevant to investors in tax-deferred accounts, such as 401(k) plans or individual retirement accounts.


Updated performance information is available at www.feim.com/individual-investors/fund/global-income-builder-fund or by calling 800.334.2143.


The following bar chart assumes reinvestment of dividends and distributions and does not reflect any sales charges. If sales charges were included, the returns would be lower.

Performance Information Illustrates Variability of Returns [Text] rr_PerformanceInformationIllustratesVariabilityOfReturns The following information provides an indication of the risks of investing in the Global Income Builder Fund by showing changes in the Fund’s performance from year to year, and by showing how the Fund’s average annual returns for the periods shown compare with those of one or more broad measures of market performance, which have characteristics relevant to the Fund’s investment strategy.
Performance Availability Phone [Text] rr_PerformanceAvailabilityPhone 800.334.2143
Performance Availability Website Address [Text] rr_PerformanceAvailabilityWebSiteAddress www.feim.com/individual-investors/fund/global-income-builder-fund
Performance Past Does Not Indicate Future [Text] rr_PerformancePastDoesNotIndicateFuture As with all mutual funds, past performance is not an indication of future performance (before or after taxes).
Bar Chart [Heading] rr_BarChartHeading Calendar Year Total Returns—Class A†
Bar Chart Does Not Reflect Sales Loads [Text] rr_BarChartDoesNotReflectSalesLoads The following bar chart assumes reinvestment of dividends and distributions and does not reflect any sales charges. If sales charges were included, the returns would be lower.
Bar Chart Closing [Text Block] rr_BarChartClosingTextBlock

 

 

 

 

 

 

 

 

 

Best Quarter*

 

 

 

Worst Quarter*

First Quarter 2019

 

7.40%

 

 

 

Fourth Quarter 2018

 

-6.48%

 

 

 

 

 


 

 

Year-to-date performance as of June 30, 2020: -7.08%.

 

*

 

For the period presented in the bar chart above.

Year to Date Return, Label rr_YearToDateReturnLabel Year-to-date
Bar Chart, Year to Date Return, Date rr_BarChartYearToDateReturnDate Jun. 30, 2020
Bar Chart, Year to Date Return rr_BarChartYearToDateReturn (7.08%)
Highest Quarterly Return, Label rr_HighestQuarterlyReturnLabel Best Quarter
Highest Quarterly Return, Date rr_BarChartHighestQuarterlyReturnDate Mar. 31, 2019
Highest Quarterly Return rr_BarChartHighestQuarterlyReturn 7.40%
Lowest Quarterly Return, Label rr_LowestQuarterlyReturnLabel Worst Quarter
Lowest Quarterly Return, Date rr_BarChartLowestQuarterlyReturnDate Dec. 31, 2018
Lowest Quarterly Return rr_BarChartLowestQuarterlyReturn (6.48%)
Index No Deduction for Fees, Expenses, Taxes [Text] rr_IndexNoDeductionForFeesExpensesTaxes (reflects no deduction for fees or expenses, but reflects net of taxes)
Performance Table Uses Highest Federal Rate rr_PerformanceTableUsesHighestFederalRate After-tax returns are calculated using the highest individual U.S. federal income tax rate for each year, and do not reflect the effect of state and local taxes.
Performance Table Not Relevant to Tax Deferred rr_PerformanceTableNotRelevantToTaxDeferred After-tax returns are not relevant to investors in tax-deferred accounts, such as 401(k) plans or individual retirement accounts.
Performance Table One Class of after Tax Shown [Text] rr_PerformanceTableOneClassOfAfterTaxShown The following table discloses after-tax returns only for Class A shares. After-tax returns for Class C, Class I, Class R3, Class R4, Class R5 and Class R6 shares will vary.
Performance Table Narrative rr_PerformanceTableNarrativeTextBlock

The following table discloses after-tax returns only for Class A shares.


After-tax returns for Class C, Class I, Class R3, Class R4, Class R5 and Class R6 shares will vary. While no or only partial information is shown for Class R3, Class R4, Class R5 and Class R6 shares (because they are more recently organized), annual returns for Class R3, Class R4, Class R5 and Class R6 shares would have been substantially similar to those shown here. Class R3, Class R4, Class R5 and Class R6 shares are invested in the same portfolio of securities and the annual returns differ only to the extent that Class R3, Class R4, Class R5 and Class R6 shares do not have the same expenses as the classes for which more extended performance is shown. Comparative expense information is in the Fees and Expenses table.

Average Annual Return, Caption rr_AverageAnnualReturnCaption Average Annual Total Returns as of December 31, 2019
First Eagle Global Income Builder Fund | 60% MSCI World Index/40% Bloomberg Barclays U.S. Aggregate Bond Index (reflects no deduction for fees or expenses, but reflects net of taxes)  
Risk/Return: rr_RiskReturnAbstract  
1 Year rr_AverageAnnualReturnYear01 20.01%
5 Years rr_AverageAnnualReturnYear05 6.63%
Since Inception rr_AverageAnnualReturnSinceInception 7.42%
Inception Date rr_AverageAnnualReturnInceptionDate May 01, 2012
First Eagle Global Income Builder Fund | MSCI World Index (reflects no deduction for fees or expenses, but reflects net of taxes)  
Risk/Return: rr_RiskReturnAbstract  
1 Year rr_AverageAnnualReturnYear01 27.67%
5 Years rr_AverageAnnualReturnYear05 8.74%
Since Inception rr_AverageAnnualReturnSinceInception 10.24%
Inception Date rr_AverageAnnualReturnInceptionDate May 01, 2012
First Eagle Global Income Builder Fund | Bloomberg Barclays U.S. Aggregate Bond Index (reflects no deduction for fees, expenses or taxes)  
Risk/Return: rr_RiskReturnAbstract  
1 Year rr_AverageAnnualReturnYear01 8.72%
5 Years rr_AverageAnnualReturnYear05 3.05%
Since Inception rr_AverageAnnualReturnSinceInception 2.85%
Inception Date rr_AverageAnnualReturnInceptionDate May 01, 2012
First Eagle Global Income Builder Fund | Class A  
Risk/Return: rr_RiskReturnAbstract  
Maximum Sales Charge (Load) on Purchases (as a percentage of public offering price) rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice 5.00%
Maximum Deferred Sales Charge (Load) (as a percentage of the lesser of your purchase or redemption price) rr_MaximumDeferredSalesChargeOverOfferingPrice 1.00% [1]
Management Fees rr_ManagementFeesOverAssets 0.75%
Distribution and/or Service (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets 0.25%
Other Expenses rr_OtherExpensesOverAssets 0.18% [2]
Total Annual Operating Expenses (%) rr_ExpensesOverAssets 1.18%
Expenses Deferred Charges [Text Block] rr_ExpensesDeferredChargesTextBlock A contingent deferred sales charge of 1.00% may apply on certain redemptions of Class A shares made within 18 months following a purchase of $250,000 or more without an initial sales charge.
Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 $ 614
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 856
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 1,117
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 1,860
Expense Example, No Redemption, 1 Year rr_ExpenseExampleNoRedemptionYear01 614
Expense Example, No Redemption, 3 Years rr_ExpenseExampleNoRedemptionYear03 856
Expense Example, No Redemption, 5 Years rr_ExpenseExampleNoRedemptionYear05 1,117
Expense Example, No Redemption, 10 Years rr_ExpenseExampleNoRedemptionYear10 $ 1,860
Annual Return 2013 rr_AnnualReturn2013 11.82%
Annual Return 2014 rr_AnnualReturn2014 1.24%
Annual Return 2015 rr_AnnualReturn2015 (2.30%)
Annual Return 2016 rr_AnnualReturn2016 10.11%
Annual Return 2017 rr_AnnualReturn2017 12.96%
Annual Return 2018 rr_AnnualReturn2018 (6.50%)
Annual Return 2019 rr_AnnualReturn2019 14.65%
1 Year rr_AverageAnnualReturnYear01 8.95%
5 Years rr_AverageAnnualReturnYear05 4.36%
Since Inception rr_AverageAnnualReturnSinceInception 5.35%
Inception Date rr_AverageAnnualReturnInceptionDate May 01, 2012
First Eagle Global Income Builder Fund | Class A | After Taxes on Distributions  
Risk/Return: rr_RiskReturnAbstract  
1 Year rr_AverageAnnualReturnYear01 7.97%
5 Years rr_AverageAnnualReturnYear05 3.45%
Since Inception rr_AverageAnnualReturnSinceInception 4.32%
First Eagle Global Income Builder Fund | Class A | After Taxes on Distributions and Sale of Fund Shares  
Risk/Return: rr_RiskReturnAbstract  
1 Year rr_AverageAnnualReturnYear01 5.33%
5 Years rr_AverageAnnualReturnYear05 3.04%
Since Inception rr_AverageAnnualReturnSinceInception 3.82%
First Eagle Global Income Builder Fund | Class C  
Risk/Return: rr_RiskReturnAbstract  
Maximum Sales Charge (Load) on Purchases (as a percentage of public offering price) rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice none
Maximum Deferred Sales Charge (Load) (as a percentage of the lesser of your purchase or redemption price) rr_MaximumDeferredSalesChargeOverOfferingPrice 1.00%
Management Fees rr_ManagementFeesOverAssets 0.75%
Distribution and/or Service (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets 1.00%
Other Expenses rr_OtherExpensesOverAssets 0.19% [2]
Total Annual Operating Expenses (%) rr_ExpensesOverAssets 1.94%
Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 $ 297
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 609
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 1,047
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 2,264
Expense Example, No Redemption, 1 Year rr_ExpenseExampleNoRedemptionYear01 197
Expense Example, No Redemption, 3 Years rr_ExpenseExampleNoRedemptionYear03 609
Expense Example, No Redemption, 5 Years rr_ExpenseExampleNoRedemptionYear05 1,047
Expense Example, No Redemption, 10 Years rr_ExpenseExampleNoRedemptionYear10 $ 2,264
1 Year rr_AverageAnnualReturnYear01 12.73%
5 Years rr_AverageAnnualReturnYear05 4.63%
Since Inception rr_AverageAnnualReturnSinceInception 5.26%
Inception Date rr_AverageAnnualReturnInceptionDate May 01, 2012
First Eagle Global Income Builder Fund | Class I  
Risk/Return: rr_RiskReturnAbstract  
Maximum Sales Charge (Load) on Purchases (as a percentage of public offering price) rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice none
Maximum Deferred Sales Charge (Load) (as a percentage of the lesser of your purchase or redemption price) rr_MaximumDeferredSalesChargeOverOfferingPrice none
Management Fees rr_ManagementFeesOverAssets 0.75%
Distribution and/or Service (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets none
Other Expenses rr_OtherExpensesOverAssets 0.18% [2]
Total Annual Operating Expenses (%) rr_ExpensesOverAssets 0.93%
Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 $ 95
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 296
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 515
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 1,143
Expense Example, No Redemption, 1 Year rr_ExpenseExampleNoRedemptionYear01 95
Expense Example, No Redemption, 3 Years rr_ExpenseExampleNoRedemptionYear03 296
Expense Example, No Redemption, 5 Years rr_ExpenseExampleNoRedemptionYear05 515
Expense Example, No Redemption, 10 Years rr_ExpenseExampleNoRedemptionYear10 $ 1,143
1 Year rr_AverageAnnualReturnYear01 14.87%
5 Years rr_AverageAnnualReturnYear05 5.69%
Since Inception rr_AverageAnnualReturnSinceInception 6.33%
Inception Date rr_AverageAnnualReturnInceptionDate May 01, 2012
First Eagle Global Income Builder Fund | Class R3  
Risk/Return: rr_RiskReturnAbstract  
Maximum Sales Charge (Load) on Purchases (as a percentage of public offering price) rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice none
Maximum Deferred Sales Charge (Load) (as a percentage of the lesser of your purchase or redemption price) rr_MaximumDeferredSalesChargeOverOfferingPrice none
Management Fees rr_ManagementFeesOverAssets 0.75%
Distribution and/or Service (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets 0.35%
Other Expenses rr_OtherExpensesOverAssets 0.27% [2]
Total Annual Operating Expenses (%) rr_ExpensesOverAssets 1.37%
Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 $ 139
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 434
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 750
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 1,646
Expense Example, No Redemption, 1 Year rr_ExpenseExampleNoRedemptionYear01 139
Expense Example, No Redemption, 3 Years rr_ExpenseExampleNoRedemptionYear03 434
Expense Example, No Redemption, 5 Years rr_ExpenseExampleNoRedemptionYear05 750
Expense Example, No Redemption, 10 Years rr_ExpenseExampleNoRedemptionYear10 $ 1,646
Performance One Year or Less [Text] rr_PerformanceOneYearOrLess While no or only partial information is shown for Class R3, Class R4, Class R5 and Class R6 shares (because they are more recently organized), annual returns for Class R3, Class R4, Class R5 and Class R6 shares would have been substantially similar to those shown here.
1 Year rr_AverageAnnualReturnYear01 14.36%
Since Inception rr_AverageAnnualReturnSinceInception 4.58%
Inception Date rr_AverageAnnualReturnInceptionDate May 01, 2018
First Eagle Global Income Builder Fund | Class R3 | 60% MSCI World Index/40% Bloomberg Barclays U.S. Aggregate Bond Index (reflects no deduction for fees or expenses, but reflects net of taxes)  
Risk/Return: rr_RiskReturnAbstract  
1 Year rr_AverageAnnualReturnYear01 20.01%
5 Years rr_AverageAnnualReturnYear05 6.63%
Since Inception rr_AverageAnnualReturnSinceInception 8.63%
Inception Date rr_AverageAnnualReturnInceptionDate May 01, 2018
First Eagle Global Income Builder Fund | Class R3 | MSCI World Index (reflects no deduction for fees or expenses, but reflects net of taxes)  
Risk/Return: rr_RiskReturnAbstract  
1 Year rr_AverageAnnualReturnYear01 27.67%
5 Years rr_AverageAnnualReturnYear05 8.74%
Since Inception rr_AverageAnnualReturnSinceInception 9.69%
Inception Date rr_AverageAnnualReturnInceptionDate May 01, 2018
First Eagle Global Income Builder Fund | Class R3 | Bloomberg Barclays U.S. Aggregate Bond Index (reflects no deduction for fees, expenses or taxes)  
Risk/Return: rr_RiskReturnAbstract  
1 Year rr_AverageAnnualReturnYear01 8.72%
5 Years rr_AverageAnnualReturnYear05 3.05%
Since Inception rr_AverageAnnualReturnSinceInception 6.54%
Inception Date rr_AverageAnnualReturnInceptionDate May 01, 2018
First Eagle Global Income Builder Fund | Class R4  
Risk/Return: rr_RiskReturnAbstract  
Maximum Sales Charge (Load) on Purchases (as a percentage of public offering price) rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice none
Maximum Deferred Sales Charge (Load) (as a percentage of the lesser of your purchase or redemption price) rr_MaximumDeferredSalesChargeOverOfferingPrice none
Management Fees rr_ManagementFeesOverAssets 0.75%
Distribution and/or Service (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets 0.10%
Other Expenses rr_OtherExpensesOverAssets 0.64% [2]
Total Annual Operating Expenses (%) rr_ExpensesOverAssets 1.49%
Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 $ 152
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 471
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 813
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 1,779
Expense Example, No Redemption, 1 Year rr_ExpenseExampleNoRedemptionYear01 152
Expense Example, No Redemption, 3 Years rr_ExpenseExampleNoRedemptionYear03 471
Expense Example, No Redemption, 5 Years rr_ExpenseExampleNoRedemptionYear05 813
Expense Example, No Redemption, 10 Years rr_ExpenseExampleNoRedemptionYear10 $ 1,779
Performance One Year or Less [Text] rr_PerformanceOneYearOrLess While no or only partial information is shown for Class R3, Class R4, Class R5 and Class R6 shares (because they are more recently organized), annual returns for Class R3, Class R4, Class R5 and Class R6 shares would have been substantially similar to those shown here.
First Eagle Global Income Builder Fund | Class R5  
Risk/Return: rr_RiskReturnAbstract  
Maximum Sales Charge (Load) on Purchases (as a percentage of public offering price) rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice none
Maximum Deferred Sales Charge (Load) (as a percentage of the lesser of your purchase or redemption price) rr_MaximumDeferredSalesChargeOverOfferingPrice none
Management Fees rr_ManagementFeesOverAssets 0.75%
Distribution and/or Service (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets none
Other Expenses rr_OtherExpensesOverAssets 0.63% [2]
Total Annual Operating Expenses (%) rr_ExpensesOverAssets 1.38%
Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 $ 140
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 437
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 755
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 1,657
Expense Example, No Redemption, 1 Year rr_ExpenseExampleNoRedemptionYear01 140
Expense Example, No Redemption, 3 Years rr_ExpenseExampleNoRedemptionYear03 437
Expense Example, No Redemption, 5 Years rr_ExpenseExampleNoRedemptionYear05 755
Expense Example, No Redemption, 10 Years rr_ExpenseExampleNoRedemptionYear10 $ 1,657
Performance One Year or Less [Text] rr_PerformanceOneYearOrLess While no or only partial information is shown for Class R3, Class R4, Class R5 and Class R6 shares (because they are more recently organized), annual returns for Class R3, Class R4, Class R5 and Class R6 shares would have been substantially similar to those shown here.
First Eagle Global Income Builder Fund | Class R6  
Risk/Return: rr_RiskReturnAbstract  
Maximum Sales Charge (Load) on Purchases (as a percentage of public offering price) rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice none
Maximum Deferred Sales Charge (Load) (as a percentage of the lesser of your purchase or redemption price) rr_MaximumDeferredSalesChargeOverOfferingPrice none
Management Fees rr_ManagementFeesOverAssets 0.75%
Distribution and/or Service (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets none
Other Expenses rr_OtherExpensesOverAssets 0.18% [2]
Total Annual Operating Expenses (%) rr_ExpensesOverAssets 0.93%
Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 $ 95
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 296
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 515
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 1,143
Expense Example, No Redemption, 1 Year rr_ExpenseExampleNoRedemptionYear01 95
Expense Example, No Redemption, 3 Years rr_ExpenseExampleNoRedemptionYear03 296
Expense Example, No Redemption, 5 Years rr_ExpenseExampleNoRedemptionYear05 515
Expense Example, No Redemption, 10 Years rr_ExpenseExampleNoRedemptionYear10 $ 1,143
Performance One Year or Less [Text] rr_PerformanceOneYearOrLess While no or only partial information is shown for Class R3, Class R4, Class R5 and Class R6 shares (because they are more recently organized), annual returns for Class R3, Class R4, Class R5 and Class R6 shares would have been substantially similar to those shown here.
1 Year rr_AverageAnnualReturnYear01 14.88%
Since Inception rr_AverageAnnualReturnSinceInception 5.86%
Inception Date rr_AverageAnnualReturnInceptionDate Mar. 01, 2017
First Eagle Global Income Builder Fund | Class R6 | 60% MSCI World Index/40% Bloomberg Barclays U.S. Aggregate Bond Index (reflects no deduction for fees or expenses, but reflects net of taxes)  
Risk/Return: rr_RiskReturnAbstract  
1 Year rr_AverageAnnualReturnYear01 20.01%
5 Years rr_AverageAnnualReturnYear05 6.63%
Since Inception rr_AverageAnnualReturnSinceInception 8.35%
Inception Date rr_AverageAnnualReturnInceptionDate Mar. 01, 2017
First Eagle Global Income Builder Fund | Class R6 | MSCI World Index (reflects no deduction for fees or expenses, but reflects net of taxes)  
Risk/Return: rr_RiskReturnAbstract  
1 Year rr_AverageAnnualReturnYear01 27.67%
5 Years rr_AverageAnnualReturnYear05 8.74%
Since Inception rr_AverageAnnualReturnSinceInception 10.94%
Inception Date rr_AverageAnnualReturnInceptionDate Mar. 01, 2017
First Eagle Global Income Builder Fund | Class R6 | Bloomberg Barclays U.S. Aggregate Bond Index (reflects no deduction for fees, expenses or taxes)  
Risk/Return: rr_RiskReturnAbstract  
1 Year rr_AverageAnnualReturnYear01 8.72%
5 Years rr_AverageAnnualReturnYear05 3.05%
Since Inception rr_AverageAnnualReturnSinceInception 4.15%
Inception Date rr_AverageAnnualReturnInceptionDate Mar. 01, 2017
[1] A contingent deferred sales charge of 1.00% may apply on certain redemptions of Class A shares made within 18 months following a purchase of $250,000 or more without an initial sales charge.
[2] "Other Expenses" shown generally reflect actual expenses for the Fund for the fiscal year ended October 31, 2019.