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Label Element Value
(American Beacon Acadian Emerging Markets Managed Volatility Fund℠)  
Prospectus: rr_ProspectusTable  
Objective [Heading] rr_ObjectiveHeading

Investment Objective

Objective, Primary [Text Block] rr_ObjectivePrimaryTextBlock

The Fund's investment objective is long-term 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. You may qualify for sales discounts if you and your eligible family members invest, or agree to invest in the future, at least $50,000 in all classes of the American Beacon Funds on an aggregated basis. More information about these and other discounts is available from your financial professional and in "Choosing Your Share Class" on page 32 of the Prospectus and "Additional Purchase and Sale Information for A Class Shares" on page 46 of the statement of additional information ("SAI"). With respect to purchases of shares through specific intermediaries, you may find additional information regarding sales charge discounts and waivers in Appendix A to the Fund's Prospectus entitled "Intermediary Sales Charge Discounts and Waivers".
Expense Breakpoint Discounts [Text] rr_ExpenseBreakpointDiscounts You may qualify for sales discounts if you and your eligible family members invest, or agree to invest in the future, at least $50,000 in all classes of the American Beacon Funds on an aggregated basis.
Expense Breakpoint, Minimum Investment Required [Amount] rr_ExpenseBreakpointMinimumInvestmentRequiredAmount $ 50,000
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 May 31, 2018
Expenses Deferred Charges [Text Block] rr_ExpensesDeferredChargesTextBlock A contingent deferred sales charge (''CDSC'') of 0.50% will be charged on certain purchases of $1,000,000 or more of A Class shares that are redeemed in whole or part within 18 months of purchase.
Expenses Not Correlated to Ratio Due to Acquired Fund Fees [Text] rr_ExpensesNotCorrelatedToRatioDueToAcquiredFundFees The Total Annual Fund Operating Expenses do not correlate to the ratio of expenses to average net assets provided in the Fund's Financial Highlights table, which reflects the operating expenses of the Fund and does not include Acquired Fund Fees and Expenses.
Expense Example [Heading] rr_ExpenseExampleHeading

Example
Expense Example Narrative [Text Block] rr_ExpenseExampleNarrativeTextBlock

This 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 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 and that the Fund's operating expenses remain the same, except that the Example reflects the fee waiver/expense reimbursement arrangement for each share class through May 31, 2018. Although your actual costs may be higher or lower, based on these assumptions, your costs would be:
Expense Example, No Redemption, By Year, Caption [Text] rr_ExpenseExampleNoRedemptionByYearCaption

Assuming no redemption of shares:
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 32% of the average value of its portfolio.
Portfolio Turnover, Rate rr_PortfolioTurnoverRate 32.00%
Strategy [Heading] rr_StrategyHeading

Principal Investment Strategies

Strategy Narrative [Text Block] rr_StrategyNarrativeTextBlock

Under normal circumstances, at least 80% of the Fund's net assets (plus the amount of any borrowings for investment purposes) are invested in securities of companies economically tied to emerging market countries. A company is generally regarded as being economically tied to an emerging markets country if it:

  • is primarily listed on the trading market of an emerging market country;

  • is headquartered in an emerging market country; or

  • derives 50% or more of its revenue from, or has 50% or more of its assets in, an emerging market country.

An emerging market country is one that:

  • has an emerging stock market as defined by the International Finance Corporation;

  • has a low- to middle-income economy according to the World Bank;

  • is included in the IFC Investable Index or the Morgan Stanley Capital International Emerging Markets Index; or

  • has a per-capita gross national product of $10,000 or less

The Fund's investment sub-advisor, Acadian Asset Management LLC ("Acadian") seeks absolute return. Acadian's strategy seeks to exploit the mispricing of risk within equities of emerging markets by building a diversified portfolio with predominately lower-volatility stocks. Acadian uses proprietary transaction cost and liquidity models designed to minimize market impact and manage turnover. Acadian seeks to manage volatility by selecting stocks for the Fund's portfolio whose total returns are not expected to fluctuate as dramatically as those of emerging markets equities as a whole and therefore may compound at a steadier pace over time.

The Fund's equity investments may include common stocks, preferred stocks, securities convertible into or exchangeable for common stocks, depositary receipts, and real estate investment trusts ("REITs"). The Fund may invest in companies of all market capitalizations and convertible securities of any duration. At times, the Fund may use forwards or currency futures to hedge its foreign currency exposure.

The Fund may also invest cash balances in other investment companies, including money market funds and may purchase and sell futures contracts to gain market exposure on cash balances or reduce market exposure in anticipation of liquidity needs.
Risk [Heading] rr_RiskHeading

Principal Risks

Risk Narrative [Text Block] rr_RiskNarrativeTextBlock

There is no assurance that the Fund will achieve its investment objective and you could lose part or all of your investment in the Fund. The Fund is not designed for investors who need an assured level of income and is intended to be a long-term investment. The Fund is not a complete investment program and may not be appropriate for all investors. Investors should carefully consider their own investment goals and risk tolerance before investing in the Fund. The principal risks of investing in the Fund are:

Absolute Return Strategy Risk
The Fund uses a variety of investment strategies intended to achieve a positive total return. The sub-advisor does not attempt to keep the portfolio structure or the Fund's performance consistent with any designated stock, bond or market index, and during times of market rallies, the Fund may not perform as well as other funds that seek to outperform an index.

Allocation Risk
The sub-advisor's judgments about, and allocations among, asset classes and market exposures may adversely affect the Fund's performance. This risk may be increased by the use of derivatives to increase allocations to various market exposures.

Counterparty Risk
The Fund is subject to the risk that a party or participant to a transaction, such as a broker or derivative counterparty, will be unwilling or unable to satisfy its obligation to make timely principal, interest or settlement payments or to otherwise honor its obligations to the Fund.

Currency Risk
The Fund may have exposure to foreign currencies by making investments in securities denominated in non-U.S. currencies and purchasing or selling forwards or currency futures contracts. Foreign currencies will fluctuate and may decline in value relative to the U.S. dollar and other currencies and thereby affect the Fund's investments in foreign (non-U.S.) currencies or in securities that trade in, and receive revenues in, or in derivatives that provide exposure to, foreign (non-U.S.) currencies.

Cybersecurity and Operational Risk
The Fund and its service providers, and shareholders' ability to transact with the Fund, may be negatively impacted due to operational risks arising from, among other problems, human errors, systems and technology disruptions or failures, or cybersecurity incidents. It is not possible for the Fund service providers to identify all of the operational risks that may affect the Fund or to develop processes and controls to completely eliminate or mitigate their occurrence or effects. Cybersecurity incidents could also affect issuers of securities in which the Fund invests, leading to significant loss of value.

Emerging Markets Risk
When investing in emerging markets, the risks of investing in foreign securities discussed below are heightened. Emerging markets are generally smaller, less developed, less liquid and more volatile than the securities markets of the U.S. and other developed markets. There are also risks of: greater political uncertainties; an economy's dependence on revenues from particular commodities or on international aid or development assistance; currency transfer restrictions; a limited number of potential buyers for such securities resulting in increased volatility and limited liquidity for emerging market securities; trading suspensions; and delays and disruptions in securities settlement procedures.

Equity Investments Risk
Equity securities are subject to investment risk and market risk. The Fund's investments in equity securities may include common stocks, preferred stocks, securities convertible into or exchangeable for common stocks, depositary receipts and REITs. Such investments may expose the Fund to additional risks.

  • Common Stock. The value of a company's common stock may fall as a result of factors affecting the company, companies in the same industry or sector, or the financial markets overall. Common stock generally is subordinate to preferred stock upon the liquidation or bankruptcy of the issuing company.

  • Convertible Securities. Convertible securities are sensitive to movement in interest rates. In addition, convertible securities are subject to the risk that the credit standing of the issuer may have an effect on the convertible securities' investment value.

  • Depositary Receipts. Depositary receipts are subject to certain of the risks associated with investing directly in foreign securities, including, but not limited to, currency exchange rate fluctuations, political and financial instability in the home country of a particular depositary receipt, less liquidity and more volatility, less government regulation and supervision and delays in transaction settlement.

  • Preferred Stock. Preferred stocks are sensitive to movements in interest rates. Preferred stocks may be less liquid than common stocks and, unlike common stocks, participation in the growth of an issuer may be limited. Distributions on preferred stocks generally are payable at the discretion of an issuer and after required payments to bond holders.

  • REITs. Investments in REITs are subject to the risks associated with investing in the real estate industry such as adverse developments affecting the real estate industry and real property values. REITs also are dependent upon the skills of their managers and are subject to heavy cash flow dependency or self-liquidation. Domestic REITs could be adversely affected by failure to qualify for tax-free "pass-through" of distributed net income and net realized gains under the Internal Revenue Code of 1986, as amended, or to maintain their exemption from registration under the Investment Company Act of 1940, as amended. REITs typically incur fees that are separate from those incurred by the Fund. Accordingly, the Fund's investment in REITs will result in the layering of expenses such that shareholders will indirectly bear a proportionate share of the REITs' operating expenses, in addition to paying Fund expenses. The value of REIT common stock may decline when interest rates rise.

Foreign Currency Forward Contracts Risk
Foreign currency forward contracts, including non-deliverable forwards ("NDFs"), are derivative instruments pursuant to a contract with a counterparty to pay a fixed price for an agreed amount of securities or other underlying assets at an agreed date or to buy or sell a specific currency at a future date at a price set at the time of the contract. The use of foreign currency forward contracts may expose the Fund to additional risks that it would not be subject to if it invested directly in the securities or currencies underlying the foreign currency forward contract.

Foreign Investing Risk
Non-U.S. investments carry potential risks not associated with U.S. investments. Such risks include, but are not limited to: (1) currency exchange rate fluctuations, (2) political and financial instability, (3) less liquidity, (4) lack of uniform accounting, auditing and financial reporting standards, (5) increased price volatility, (6) less government regulation and supervision of foreign stock exchanges, brokers and listed companies; and (7) delays in transaction settlement in some foreign markets.

Futures Contracts Risk
Futures contracts are derivative instruments in which one party pays a fixed price for an agreed amount of securities or other underlying assets at an agreed date. The use of such derivative instruments may expose the Fund to additional risks that it would not be subject to if it invested directly in the securities underlying those derivatives. Futures contracts may experience potentially dramatic price changes (losses) and imperfect correlation between the price of the contract and the underlying security or index which will increase the volatility of the Fund and may involve a small investment of cash (the amount of initial and variation margin) relative to the magnitude of the risk assumed (the potential increase or decrease in the price of the futures contract).

Hedging Risk
The Fund will employ various hedging strategies. There are a variety of factors that may cause hedges to fail to mitigate risks in the manner expected, such as if an instrument used to hedge fails to demonstrate the expected correlation to the risk being hedged, the Fund uses a hedging instrument at the wrong time, or judges the market conditions incorrectly. In addition, hedges, even when successful in mitigating risk, may not prevent the Fund from experiencing losses on its investments, and therefore the use of hedging strategies may reduce the Fund's return, or create a loss.

Investment Risk
An investment in the Fund is not a deposit with a bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency. When you sell your shares of the Fund, they could be worth less than what you paid for them. Therefore, you may lose money by investing in the Fund.

Issuer Risk
The value of, and/or the return generated by, a security may decline for a number of reasons which directly relate to the issuer, such as management performance, financial leverage and reduced demand for the issuer's goods or services, as well as the historical and prospective earnings of the issuer and the value of its assets.

Managed Volatility Strategy Risk
Securities purchased for the Fund may exhibit higher price volatility than anticipated and the Fund may not be less volatile than the market as a whole. In addition, the sub-advisor's managed volatility strategy may not consistently minimize market impact and reduce portfolio turnover. While the sub-advisor's managed volatility strategy may limit the Fund's downside risk over time, the Fund also may experience lesser gains in a rising market.

Market Risk
The Fund is subject to the risk that the securities markets will move down, sometimes rapidly and unpredictably based on overall economic conditions and other factors. The value of a security may decline due to general market conditions which are not specifically related to a particular company, such as real or perceived adverse economic conditions, changes in the general outlook for corporate earnings, changes in interest or currency rates or adverse investment sentiment generally. Changes in the financial condition of a single issuer can impact a market as a whole.

Market Timing Risk
Because the Fund invests in foreign securities, or it has exposure to foreign securities through the derivatives it holds, it is particularly subject to the risk of market timing activities. Frequent trading by Fund shareholders poses risks to other shareholders in the Fund, including (i) the dilution of the Fund's net asset value ("NAV"), (ii) an increase in the Fund's expenses, and (iii) interference with the portfolio manager's ability to execute efficient investment strategies. Because of specific types of securities in which the Fund may invest, it could be subject to the risk of market timing activities by shareholders.

Model and Data Risk
Models and data are used to screen potential investments for the Fund. When models or data prove to be incorrect or incomplete, any decisions made in reliance thereon expose the Fund to potential risks. Some of the models used by the sub-advisor are predictive in nature. The use of predictive models has inherent risks. Because predictive models are usually constructed based on historical data supplied by third parties, the success of relying on such models may depend heavily on the accuracy and reliability of the supplied historical data.

Other Investment Companies Risk
The Fund may invest in shares of other registered investment companies, including money market funds. To the extent that the Fund invests in shares of other registered investment companies, the Fund will indirectly bear the fees and expenses charged by those investment companies in addition to the Fund's direct fees and expenses and will be subject to the risks associated with investments in those funds. For example, money market funds are subject to interest rate risk, credit risk, and market risk.

Sector Risk
When the Fund focuses its investments in certain sectors of the economy, its performance may be driven largely by sector performance and could fluctuate more widely than if the Fund were invested more evenly across sectors.

Securities Selection Risk
Securities selected by the sub-advisor or the Manager for the Fund may not perform to expectations. This could result in the Fund's underperformance compared to other funds with similar investment objectives.

Segregated Assets Risk
In connection with certain transactions that may give rise to future payment obligations, including futures and forward contracts, the Fund may be required to maintain a segregated amount of, or otherwise earmark, cash or liquid securities to cover the obligation. Segregated assets cannot be sold while the position they are covering is outstanding, unless they are replaced with other assets of equal value. The need to maintain cash or other liquid securities in segregated accounts could limit the Fund's ability to pursue other opportunities as they arise.

Small and Mid-Capitalization Companies Risk
Investing in the securities of small and mid-capitalization companies involves greater risk and the possibility of greater price volatility than investing in larger capitalization and more established companies. Since small and mid-capitalization companies may have limited operating history, product lines, and financial resources, the securities of these companies may lack sufficient market liquidity, and they can be particularly sensitive to expected changes in interest rates, borrowing costs and earnings. In general, these risks are greater for small-capitalization companies than for mid-capitalization companies.
Risk Lose Money [Text] rr_RiskLoseMoney There is no assurance that the Fund will achieve its investment objective and you could lose part or all of your investment in the Fund.
Risk Not Insured Depository Institution [Text] rr_RiskNotInsuredDepositoryInstitution An investment in the Fund is not a deposit with a 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

Fund Performance

Performance Narrative [Text Block] rr_PerformanceNarrativeTextBlock

The bar chart and table below provide an indication of risk by showing changes in the Fund's performance over time. The bar chart shows how the Fund's performance has varied from year to year. The table shows how the Fund's average annual total returns compare to a broad-based market index for the periods indicated.

You may obtain updated performance information on the Fund's website at www.americanbeaconfunds.com . 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

Calendar year total returns for Investor Class Shares. Year Ended 12/31
Bar Chart Closing [Text Block] rr_BarChartClosingTextBlock

Highest Quarterly Return:
8.29% 2nd Quarter 2014
1/01/2014 through 12/31/2016

Lowest Quarterly Return:
-12.51% 3rd Quarter 2015
1/01/2014 through 12/31/2016

The calendar year-to-date total return as of 3/31/2017 was 8.58%.
Performance Table Heading rr_PerformanceTableHeading

Average annual total returns for periods ended December 31, 2016
Performance Table Closing [Text Block] rr_PerformanceTableClosingTextBlock

After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local income taxes. Actual after-tax returns depend on an investor's tax situation and may differ from those shown. The return after taxes on distributions and sale of Fund shares may exceed the return before taxes due to an assumed tax benefit from any losses on a sale of Fund shares at the end of the measurement period. If you hold your Fund shares through a tax-deferred arrangement, such as an individual retirement account or a 401(k) plan, the after-tax returns do not apply to your situation. After-tax returns are shown only for Investor Class shares; after-tax returns for other share classes will vary.
Performance Table Uses Highest Federal Rate rr_PerformanceTableUsesHighestFederalRate After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local income taxes.
Performance Table Not Relevant to Tax Deferred rr_PerformanceTableNotRelevantToTaxDeferred If you hold your Fund shares through a tax-deferred arrangement, such as an individual retirement account or a 401(k) plan, the after-tax returns do not apply to your situation.
Performance Table Explanation after Tax Higher rr_PerformanceTableExplanationAfterTaxHigher The return after taxes on distributions and sale of Fund shares may exceed the return before taxes due to an assumed tax benefit from any losses on a sale of Fund shares at the end of the measurement period.
Performance Past Does Not Indicate Future [Text] rr_PerformancePastDoesNotIndicateFuture 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 an indication of risk by showing changes in the Fund's performance over time. The bar chart shows how the Fund's performance has varied from year to year. The table shows how the Fund's average annual total returns compare to a broad-based market index for the periods indicated.
Performance Table One Class of after Tax Shown [Text] rr_PerformanceTableOneClassOfAfterTaxShown After-tax returns are shown only for Investor Class shares; after-tax returns for other share classes will vary.
Performance Availability Website Address [Text] rr_PerformanceAvailabilityWebSiteAddress www.americanbeaconfunds.com
(American Beacon Acadian Emerging Markets Managed Volatility Fund℠) | Lipper Emerging Markets Fund Index (Reflects no deduction for fees expenses or taxes)  
Prospectus: rr_ProspectusTable  
1 Year rr_AverageAnnualReturnYear01 12.10%
Since Inception rr_AverageAnnualReturnSinceInception (1.80%)
(American Beacon Acadian Emerging Markets Managed Volatility Fund℠) | MSCI Emerging Markets Index (Reflects no deduction for fees expenses or taxes)  
Prospectus: rr_ProspectusTable  
1 Year rr_AverageAnnualReturnYear01 11.19%
Since Inception rr_AverageAnnualReturnSinceInception (2.18%)
(American Beacon Acadian Emerging Markets Managed Volatility Fund℠) | Class A  
Prospectus: rr_ProspectusTable  
Maximum sales charge imposed on purchases (as a percentage of offering price) rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice 5.75%
Maximum deferred sales charge (as a percentage of the lower of original offering price or redemption proceeds) rr_MaximumDeferredSalesChargeOverOther 0.50% [1]
Redemption fee (as a percentage of amount redeemed; applies to the proceeds of shares redeemed within 90 days of purchase) rr_RedemptionFeeOverRedemption 2.00%
Management Fees rr_ManagementFeesOverAssets 0.98%
Distribution (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets 0.25%
Other Expenses rr_OtherExpensesOverAssets 0.67%
Acquired Fund Fees and Expenses rr_AcquiredFundFeesAndExpensesOverAssets 0.01%
Total Annual Fund Operating Expenses rr_ExpensesOverAssets 1.91% [2]
Fee Waiver and/or expense reimbursement rr_FeeWaiverOrReimbursementOverAssets (0.15%) [3]
Total Annual Fund Operating Expenses after fee waiver and/or expense reimbursement rr_NetExpensesOverAssets 1.76%
Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 $ 744
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 1,128
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 1,536
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 $ 2,671
1 Year rr_AverageAnnualReturnYear01 3.82%
Since Inception rr_AverageAnnualReturnSinceInception (2.68%)
Inception Date of Class rr_AverageAnnualReturnInceptionDate Sep. 27, 2013
(American Beacon Acadian Emerging Markets Managed Volatility Fund℠) | Class C  
Prospectus: rr_ProspectusTable  
Maximum sales charge imposed on purchases (as a percentage of offering price) rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice none
Maximum deferred sales charge (as a percentage of the lower of original offering price or redemption proceeds) rr_MaximumDeferredSalesChargeOverOther 1.00%
Redemption fee (as a percentage of amount redeemed; applies to the proceeds of shares redeemed within 90 days of purchase) rr_RedemptionFeeOverRedemption 2.00%
Management Fees rr_ManagementFeesOverAssets 0.98%
Distribution (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets 1.00%
Other Expenses rr_OtherExpensesOverAssets 0.69%
Acquired Fund Fees and Expenses rr_AcquiredFundFeesAndExpensesOverAssets 0.01%
Total Annual Fund Operating Expenses rr_ExpensesOverAssets 2.68% [2]
Fee Waiver and/or expense reimbursement rr_FeeWaiverOrReimbursementOverAssets (0.17%) [3]
Total Annual Fund Operating Expenses after fee waiver and/or expense reimbursement rr_NetExpensesOverAssets 2.51%
Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 $ 354
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 816
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 1,405
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 3,001
Expense Example, No Redemption, 1 Year rr_ExpenseExampleNoRedemptionYear01 254
Expense Example, No Redemption, 3 Years rr_ExpenseExampleNoRedemptionYear03 816
Expense Example, No Redemption, 5 Years rr_ExpenseExampleNoRedemptionYear05 1,405
Expense Example, No Redemption, 10 Years rr_ExpenseExampleNoRedemptionYear10 $ 3,001
1 Year rr_AverageAnnualReturnYear01 3.17%
Since Inception rr_AverageAnnualReturnSinceInception (3.40%)
Inception Date of Class rr_AverageAnnualReturnInceptionDate Sep. 27, 2013
(American Beacon Acadian Emerging Markets Managed Volatility Fund℠) | Class Y  
Prospectus: rr_ProspectusTable  
Maximum sales charge imposed on purchases (as a percentage of offering price) rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice none
Maximum deferred sales charge (as a percentage of the lower of original offering price or redemption proceeds) rr_MaximumDeferredSalesChargeOverOther none
Redemption fee (as a percentage of amount redeemed; applies to the proceeds of shares redeemed within 90 days of purchase) rr_RedemptionFeeOverRedemption 2.00%
Management Fees rr_ManagementFeesOverAssets 0.98%
Distribution (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets none
Other Expenses rr_OtherExpensesOverAssets 0.57%
Acquired Fund Fees and Expenses rr_AcquiredFundFeesAndExpensesOverAssets 0.01%
Total Annual Fund Operating Expenses rr_ExpensesOverAssets 1.56% [2]
Fee Waiver and/or expense reimbursement rr_FeeWaiverOrReimbursementOverAssets (0.10%) [3]
Total Annual Fund Operating Expenses after fee waiver and/or expense reimbursement rr_NetExpensesOverAssets 1.46%
Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 $ 149
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 483
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 841
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 $ 1,848
1 Year rr_AverageAnnualReturnYear01 4.13%
Since Inception rr_AverageAnnualReturnSinceInception (2.38%)
Inception Date of Class rr_AverageAnnualReturnInceptionDate Sep. 27, 2013
(American Beacon Acadian Emerging Markets Managed Volatility Fund℠) | Institutional Class  
Prospectus: rr_ProspectusTable  
Maximum sales charge imposed on purchases (as a percentage of offering price) rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice none
Maximum deferred sales charge (as a percentage of the lower of original offering price or redemption proceeds) rr_MaximumDeferredSalesChargeOverOther none
Redemption fee (as a percentage of amount redeemed; applies to the proceeds of shares redeemed within 90 days of purchase) rr_RedemptionFeeOverRedemption 2.00%
Management Fees rr_ManagementFeesOverAssets 0.98%
Distribution (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets none
Other Expenses rr_OtherExpensesOverAssets 0.49%
Acquired Fund Fees and Expenses rr_AcquiredFundFeesAndExpensesOverAssets 0.01%
Total Annual Fund Operating Expenses rr_ExpensesOverAssets 1.48% [2]
Fee Waiver and/or expense reimbursement rr_FeeWaiverOrReimbursementOverAssets (0.12%) [3]
Total Annual Fund Operating Expenses after fee waiver and/or expense reimbursement rr_NetExpensesOverAssets 1.36%
Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 $ 138
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 456
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 796
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 $ 1,758
1 Year rr_AverageAnnualReturnYear01 4.23%
Since Inception rr_AverageAnnualReturnSinceInception (2.27%)
Inception Date of Class rr_AverageAnnualReturnInceptionDate Sep. 27, 2013
(American Beacon Acadian Emerging Markets Managed Volatility Fund℠) | Investor Class  
Prospectus: rr_ProspectusTable  
Maximum sales charge imposed on purchases (as a percentage of offering price) rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice none
Maximum deferred sales charge (as a percentage of the lower of original offering price or redemption proceeds) rr_MaximumDeferredSalesChargeOverOther none
Redemption fee (as a percentage of amount redeemed; applies to the proceeds of shares redeemed within 90 days of purchase) rr_RedemptionFeeOverRedemption 2.00%
Management Fees rr_ManagementFeesOverAssets 0.98%
Distribution (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets none
Other Expenses rr_OtherExpensesOverAssets 0.79%
Acquired Fund Fees and Expenses rr_AcquiredFundFeesAndExpensesOverAssets 0.01%
Total Annual Fund Operating Expenses rr_ExpensesOverAssets 1.78% [2]
Fee Waiver and/or expense reimbursement rr_FeeWaiverOrReimbursementOverAssets (0.04%) [3]
Total Annual Fund Operating Expenses after fee waiver and/or expense reimbursement rr_NetExpensesOverAssets 1.74%
Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 $ 177
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 556
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 961
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 $ 2,092
Annual Return 2014 rr_AnnualReturn2014 1.19%
Annual Return 2015 rr_AnnualReturn2015 (14.48%)
Annual Return 2016 rr_AnnualReturn2016 3.86%
Year to Date Return, Label rr_YearToDateReturnLabel The calendar year-to-date total return as of 3/31/2017 was 8.58%.
Bar Chart, Year to Date Return rr_BarChartYearToDateReturn 8.58%
Bar Chart, Year to Date Return, Date rr_BarChartYearToDateReturnDate Mar. 31, 2017
Highest Quarterly Return, Label rr_HighestQuarterlyReturnLabel Highest Quarterly Return: 8.29% 2nd Quarter 2014 1/01/2014 through 12/31/2016
Highest Quarterly Return rr_BarChartHighestQuarterlyReturn 8.29%
Highest Quarterly Return, Date rr_BarChartHighestQuarterlyReturnDate Jun. 30, 2014
Lowest Quarterly Return, Label rr_LowestQuarterlyReturnLabel Lowest Quarterly Return: -12.51% 3rd Quarter 2015 1/01/2014 through 12/31/2016
Lowest Quarterly Return rr_BarChartLowestQuarterlyReturn (12.51%)
Lowest Quarterly Return, Date rr_BarChartLowestQuarterlyReturnDate Sep. 30, 2015
1 Year rr_AverageAnnualReturnYear01 3.86%
Since Inception rr_AverageAnnualReturnSinceInception (2.62%)
Inception Date of Class rr_AverageAnnualReturnInceptionDate Sep. 27, 2013
(American Beacon Acadian Emerging Markets Managed Volatility Fund℠) | Investor Class | Returns After Taxes on Distributions  
Prospectus: rr_ProspectusTable  
1 Year rr_AverageAnnualReturnYear01 3.46%
Since Inception rr_AverageAnnualReturnSinceInception (2.86%)
Inception Date of Class rr_AverageAnnualReturnInceptionDate Sep. 27, 2013
(American Beacon Acadian Emerging Markets Managed Volatility Fund℠) | Investor Class | Returns After Taxes on Distributions and Sales of Fund Shares  
Prospectus: rr_ProspectusTable  
1 Year rr_AverageAnnualReturnYear01 2.50%
Since Inception rr_AverageAnnualReturnSinceInception (1.97%)
Inception Date of Class rr_AverageAnnualReturnInceptionDate Sep. 27, 2013
(American Beacon Crescent Short Duration High Income Fund℠)  
Prospectus: rr_ProspectusTable  
Objective [Heading] rr_ObjectiveHeading

Investment Objective

Objective, Primary [Text Block] rr_ObjectivePrimaryTextBlock

The Fund's investment objective is high current income with capital appreciation as a secondary objective.
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. You may qualify for sales discounts if you and your eligible family members invest, or agree to invest in the future, at least $50,000 in all classes of the American Beacon Funds on an aggregated basis. More information about these and other discounts is available from your financial professional and in "Choosing Your Share Class" on page 32 of the Prospectus and "Additional Purchase and Sale Information for A Class Shares" on page 46 of the statement of additional information ("SAI"). With respect to purchases of shares through specific intermediaries, you may find additional information regarding sales charge discounts and waivers in Appendix A to the Fund's Prospectus entitled "Intermediary Sales Charge Discounts and Waivers".
Expense Breakpoint Discounts [Text] rr_ExpenseBreakpointDiscounts You may qualify for sales discounts if you and your eligible family members invest, or agree to invest in the future, at least $50,000 in all classes of the American Beacon Funds on an aggregated basis.
Expense Breakpoint, Minimum Investment Required [Amount] rr_ExpenseBreakpointMinimumInvestmentRequiredAmount $ 50,000
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 May 31, 2018
Expenses Deferred Charges [Text Block] rr_ExpensesDeferredChargesTextBlock A contingent deferred sales charge ("CDSC") of 0.50% will be charged on certain purchases of $250,000 or more of A Class shares that are redeemed in whole or part within 18 months of purchase.
Expenses Not Correlated to Ratio Due to Acquired Fund Fees [Text] rr_ExpensesNotCorrelatedToRatioDueToAcquiredFundFees The Total Annual Fund Operating Expenses do not correlate to the ratio of expenses to average net assets provided in the Fund's Financial Highlights table, which reflects the operating expenses of the Fund and does not include Acquired Fund Fees and Expenses.
Expense Example [Heading] rr_ExpenseExampleHeading

Example
Expense Example Narrative [Text Block] rr_ExpenseExampleNarrativeTextBlock

This 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 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 and that the Fund's operating expenses remain the same, except that the Example reflects the fee waiver/expense reimbursement arrangement for each share class through May 31, 2018. Although your actual costs may be higher or lower, based on these assumptions, your costs would be:
Expense Example, No Redemption, By Year, Caption [Text] rr_ExpenseExampleNoRedemptionByYearCaption

Assuming no redemption of shares:
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 95% of the average value of its portfolio.
Portfolio Turnover, Rate rr_PortfolioTurnoverRate 95.00%
Strategy [Heading] rr_StrategyHeading

Principal Investment Strategies

Strategy Narrative [Text Block] rr_StrategyNarrativeTextBlock

Under normal circumstances, the Fund will invest primarily in high yield fixed income securities and bank loans that are rated below investment grade. The Fund considers investments to be below investment grade if they are rated BB+ or lower by S&P Global Ratings or Fitch, Inc. and/or Ba1 or lower by Moody's Investors Service, Inc., or, if unrated, deemed to be below investment grade by Crescent Capital Group LP ("Crescent Capital"), the Fund's sub-advisor. Below investment grade fixed income securities are commonly referred to as "junk bonds."

The fixed-income securities in which the Fund may invest include high yield bonds, corporate bonds, bank loans, senior loans, fixed or floating rate securities, and preferred stock of domestic or foreign issuers. The Fund also may invest in illiquid securities, including investments in private debt instruments. The Fund intends to maintain a dollar-weighted average duration of three years or less.

Crescent Capital's investment strategy is to tactically allocate among fixed and floating rate, secured and unsecured, and public and private credit investments to achieve a high level of current income regardless of the overall credit or interest rate environment. Crescent Capital's investment philosophy is based on a credit-intensive research process that seeks to exploit credit market inefficiencies. The sub-advisor seeks investment opportunities among different types of fixed income securities and a range of market sectors. Crescent Capital seeks to invest in fixed income securities issued by companies that demonstrate one or more of the following characteristics: (i) predictable demand and stable cash flows; (ii) competitive positions in well-defined market niches; (iii) sustainable margins, profitability and growth; (iv) strong financial and managerial controls; and (v) seasoned management teams.

The Fund may invest cash balances in other investment companies, including money market funds.
Risk [Heading] rr_RiskHeading

Principal Risks

Risk Narrative [Text Block] rr_RiskNarrativeTextBlock

There is no assurance that the Fund will achieve its investment objective and you could lose part or all of your investment in the Fund. The Fund is not designed for investors who need an assured level of income and is intended to be a long-term investment. The Fund is not a complete investment program and may not be appropriate for all investors. Investors should carefully consider their own investment goals and risk tolerance before investing in the Fund. The principal risks of investing in the Fund are:

Allocation Risk
The sub-advisor's judgments about, and allocations among, asset classes and market exposures may adversely affect the Fund's performance. This risk may be increased by the use of derivatives to increase allocations to various market exposures.

Credit Risk
The Fund is subject to the risk that the issuer or guarantor of a debt security, or the counterparty to a derivatives contract or a loan will fail to make timely payment of interest or principal or otherwise honor its obligations or default completely. Credit risk is typically greater for securities with ratings that are below investment grade (commonly referred to as "junk bonds"). Since the Fund can invest significantly in lower-quality debt securities considered speculative in nature, this risk will be substantial. A downgrade or default affecting any of the Fund's securities could affect the Fund's performance.

Cybersecurity and Operational Risk
The Fund and its service providers, and shareholders' ability to transact with the Fund, may be negatively impacted due to operational risks arising from, among other problems, human errors, systems and technology disruptions or failures, or cybersecurity incidents. It is not possible for the Fund service providers to identify all of the operational risks that may affect the Fund or to develop processes and controls to completely eliminate or mitigate their occurrence or effects. Cybersecurity incidents could also affect issuers of securities in which the Fund invests, leading to significant loss of value.

Floating Rate Securities Risk
The interest rates payable on floating rate securities are not fixed and may fluctuate based upon changes in market rates. The interest rate on a floating rate security is a variable rate which is tied to another interest rate, such as a money-market index or Treasury bill rate. Floating rate securities are subject to interest rate risk and credit risk.

As short-term interest rates decline, interest payable on floating rate securities typically decreases. Alternatively, during periods of rising interest rates, interest payable on floating-rate securities typically increases. Changes in the interest rates of floating rate securities may lag behind changes in market rates or may have limits on the maximum increases in interest rates. The value of floating rate securities may decline if their interest rates do not rise as much, or as quickly, as interest rates in general. Conversely, floating rate securities will not generally increase in value if interest rates decline.

Foreign Investing Risk
Non-U.S. investments carry potential risks not associated with U.S. investments. Such risks include, but are not limited to: (1) currency exchange rate fluctuations, (2) political and financial instability, (3) less liquidity, (4) lack of uniform accounting, auditing and financial reporting standards, (5) increased price volatility, (6) less government regulation and supervision of foreign stock exchanges, brokers and listed companies; and (7) delays in transaction settlement in some foreign markets.

High Yield Securities Risk
Investing in high yield, below investment-grade securities (commonly referred to as "junk bonds") generally involves significantly greater risks of loss of your money than an investment in investment grade securities. High yield debt securities may fluctuate more widely in price and yield and may fall in price when the economy is weak or expected to become weak. High yield securities are considered to be speculative with respect to an issuer's ability to pay interest and principal and carry a greater risk that the issuers of lower-rated securities will default on the timely payment of principal and interest. Below investment grade securities may experience greater price volatility and less liquidity than investment grade securities.

High Portfolio Turnover Risk
Portfolio turnover is a measure of the Fund's trading activity over a one-year period. High portfolio turnover could increase the Fund's transaction costs, have a negative impact on performance, and generate higher capital gain distributions to shareholders than if the Fund had a lower portfolio turnover rate.

Illiquid and Restricted Securities Risk
Securities not registered in the U.S. under the Securities Act of 1933, as amended (the "Securities Act"), including Rule 144A securities, are restricted as to their resale. Such securities may not be listed on an exchange and may have no active trading market. They may be more difficult to purchase or sell at an advantageous time or price because such securities may not be readily marketable in broad public markets, or may have to be held for a certain time period before they can be resold. The Fund may not be able to sell a restricted security when the sub-advisor considers it desirable to do so and/or may have to sell the security at a lower price than the Fund believes is its fair market value. In addition, transaction costs may be higher for restricted securities and the Fund may receive only limited information regarding the issuer of a restricted security. The Fund may have to bear the expense of registering restricted securities for resale and the risk of substantial delays in effecting the registration.

Interest Rate Risk
The Fund is subject to the risk that the market value of fixed income securities it holds will decline due to rising interest rates. Generally, the value of investments with interest rate risk, such as fixed income securities, will move in the opposite direction to movements in interest rates. The Federal Reserve raised the federal funds rate in December 2016 and March 2017 and has signaled additional increases in 2017. Interest rates may rise, perhaps significantly and/or rapidly, potentially resulting in substantial losses to the Fund. The prices of fixed income securities are also affected by their durations. Fixed income securities with longer duration generally have greater sensitivity to changes in interest rates. For example, if a bond has a duration of three years, a 1% increase in interest rates could be expected to result in a 3% decrease in the value of the bond. An increase in interest rates can impact markets broadly as well. Some investors buy securities with borrowed money; an increase in interest rates can cause a decline in those markets.

Investment Risk
An investment in the Fund is not a deposit with a bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency. When you sell your shares of the Fund, they could be worth less than what you paid for them. Therefore, you may lose money by investing in the Fund.

Issuer Risk
The value of, and/or the return generated by, a security may decline for a number of reasons which directly relate to the issuer, such as management performance, financial leverage and reduced demand for the issuer's goods or services, as well as the historical and prospective earnings of the issuer and the value of its assets.

Liquidity Risk
The Fund is susceptible to the risk that certain investments held by the Fund, such as structured notes and other derivative instruments, may have limited marketability or be subject to restrictions on sale, and may be difficult or impossible to purchase or sell at favorable times or prices. The Fund could lose money if it is unable to dispose of an investment at a time that is most beneficial to the Fund. The Fund may be required to dispose of investments at unfavorable times or prices to satisfy obligations, which may result in losses or may be costly to the Fund. For example, the Fund may be forced to sell certain investments at unfavorable prices to meet redemption requests or other cash needs. Judgment plays a greater role in pricing illiquid investments than in investments with more active markets.

Loan Interests Risk
Unlike publicly traded common stocks which trade on national exchanges, there is no central place or exchange for loans, including bank loans and senior loans, to trade. There is a risk that the value of any collateral securing a loan in which the Fund has an interest may decline and that the collateral may not be sufficient to cover the amount owed on the loan. In the event the borrower defaults, the Fund's access to the collateral may be limited or delayed by bankruptcy or other insolvency laws. Loans trade in an over-the-counter market, and confirmation and settlement, which are effected through standardized procedures and documentation, may take significantly longer than seven days to complete. Extended trade settlement periods may, in unusual market conditions with a high volume of shareholder redemptions, present a risk to shareholders regarding the Fund's ability to pay redemption proceeds within the allowable time periods stated in its prospectus. The secondary market for floating rate loans also may be subject to irregular trading activity and wide bid/ask spreads. The lack of an active trading market for certain loans may impair the ability of the Fund to sell its loan interests at a time when it may otherwise be desirable to do so or may require the Fund to sell them at prices that are less than what the Fund regards as their fair market value and may make it difficult to value such loans. Interests in loans made to finance highly leveraged companies or transactions, such as corporate acquisitions, may be especially vulnerable to adverse changes in economic or market conditions. The Fund may acquire a loan interest by obtaining an assignment of all or a portion of the interests in a particular loan that are held by an original lender or a prior assignee. As an assignee, the Fund normally will succeed to all rights and obligations of its assignor with respect to the portion of the loan that is being assigned. However, the rights and obligations acquired by the purchaser of a loan assignment may differ from, and be more limited than, those held by the original lenders or the assignor. Alternatively, the Fund may acquire a participation in a loan interest that is held by another party. When the Fund's loan interest is a participation, the Fund is subject to the risk that the party selling the participation interest will not remit the Fund's pro rata share of loan payments to the Fund, and the Fund may have less control over the exercise of remedies than the party selling the participation interest.

Market Risk
The Fund is subject to the risk that the securities markets will move down, sometimes rapidly and unpredictably based on overall economic conditions and other factors. The value of a security may decline due to general market conditions which are not specifically related to a particular company, such as real or perceived adverse economic conditions, changes in the general outlook for corporate earnings, changes in interest or currency rates or adverse investment sentiment generally. Changes in the financial condition of a single issuer can impact a market as a whole.

Other Investment Companies Risk
The Fund may invest in shares of other registered investment companies, including money market funds. To the extent that the Fund invests in shares of other registered investment companies, the Fund will indirectly bear the fees and expenses charged by those investment companies in addition to the Fund's direct fees and expenses and will be subject to the risks associated with investments in those funds. For example, money market funds are subject to interest rate risk, credit risk, and market risk.

Preferred Stock Risk
If interest rates rise, the dividend on preferred stocks may be less attractive, causing the price of preferred stocks to decline. The rights of preferred stock on distribution of a corporation's assets in the event of its liquidation are generally subordinated to the rights associated with a corporation's debt securities. In the event of an issuer's bankruptcy, there is significant risk that the value of the preferred stock will decline substantially after payments, if any, to bondholders have been made, potentially becoming worthless. Preferred stocks may also be subject to Credit Risk.

Prepayment and Extension Risk
Prepayment risk is the risk that the principal amount of a bond may be repaid prior to the bond's maturity date. Due to a decline in interest rates or excess cash flow, a debt security may be called or otherwise prepaid before maturity. If this occurs, no additional interest will be paid on the investment and the Fund may have to invest at a lower rate, may not benefit from an increase in value that may result from declining interest rates, and may lose any premium it paid to acquire the security. Variable and floating rate securities may be less sensitive to prepayment risk. Extension risk is the risk that a decrease in prepayments may, as a result of higher interest rates or other factors, result in the extension of a security's effective maturity, heighten interest rate risk and increase the potential for a decline in its price.

Redemption Risk
Due to a rise in interest rates or other market developments that may cause investors to move out of fixed income securities on a large scale, the Fund may experience periods of heavy redemptions that could cause the Fund to sell assets at inopportune times or at a loss or depressed value. Redemption risk is heightened during periods of declining or illiquid markets. Heavy redemptions could hurt the Fund's performance.

Reliance on Corporate Management and Financial Reporting Risk
The Fund may trade various corporate debt instruments and collateralized debt securities. The sub-advisor may select investments for the Fund in part on the basis of information and data made directly available to the sub-advisor by the issuers of securities or through sources other than the issuers such as collateral pool servicers. The sub-advisor is dependent upon the integrity of the management of these issuers and of such servicers and the financial and collateral performance reporting processes in general.

Sector Risk
When the Fund focuses its investments in certain sectors of the economy, its performance may be driven largely by sector performance and could fluctuate more widely than if the Fund were invested more evenly across sectors.

Securities Selection Risk
Securities selected by the sub-advisor or the Manager for the Fund may not perform to expectations. This could result in the Fund's underperformance compared to other funds with similar investment objectives.

Segregated Assets Risk
In connection with certain transactions that may give rise to future payment obligations, including futures and forward contracts, the Fund may be required to maintain a segregated amount of, or otherwise earmark, cash or liquid securities to cover the obligation. Segregated assets cannot be sold while the position they are covering is outstanding, unless they are replaced with other assets of equal value. The need to maintain cash or other liquid securities in segregated accounts could limit the Fund's ability to pursue other opportunities as they arise.

Unrated Securities Risk
Because the Fund may purchase securities that are not rated by any rating organization, the sub-advisor, after assessing their credit quality, may internally assign ratings to certain of those securities in categories similar to those of rating organizations. Some unrated securities may not have an active trading market or may be difficult to value, which means the Fund might have difficulty selling them promptly at an acceptable price. Unrated securities may be subject to greater liquidity risk and price volatility.
Risk Lose Money [Text] rr_RiskLoseMoney There is no assurance that the Fund will achieve its investment objective and you could lose part or all of your investment in the Fund.
Risk Not Insured Depository Institution [Text] rr_RiskNotInsuredDepositoryInstitution An investment in the Fund is not a deposit with a 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

Fund Performance

Performance Narrative [Text Block] rr_PerformanceNarrativeTextBlock

The bar chart and table below provide an indication of risk by showing changes in the Fund's performance over time. The bar chart shows how the Fund's performance has varied from year to year. The table shows how the Fund's average annual total returns compare to a broad-based market index for the periods indicated.

You may obtain updated performance information on the Fund's website at www.americanbeaconfunds.com . 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

Calendar year total returns for Investor Class Shares. Year Ended 12/31 of each Year
Bar Chart Closing [Text Block] rr_BarChartClosingTextBlock

Highest Quarterly Return:
3.66% 3rd Quarter 2016
1/01/2015 through 12/31/2016

Lowest Quarterly Return:
-2.97% 3rd Quarter 2015
1/01/2015 through 12/31/2016

The calendar year-to-date total return as of 3/31/2017 was 1.48%.
Performance Table Heading rr_PerformanceTableHeading

Average annual total returns for periods ended December 31, 2016
Performance Table Closing [Text Block] rr_PerformanceTableClosingTextBlock

After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local income taxes. Actual after-tax returns depend on an investor's tax situation and may differ from those shown. The return after taxes on distributions and sale of Fund shares may exceed the return before taxes due to an assumed tax benefit from any losses on a sale of Fund shares at the end of the measurement period. If you hold your Fund shares through a tax-deferred arrangement, such as an individual retirement account or a 401(k) plan, the after-tax returns do not apply to your situation. After-tax returns are shown only for Investor Class shares; after-tax returns for other share classes will vary.
Performance Table Uses Highest Federal Rate rr_PerformanceTableUsesHighestFederalRate After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local income taxes.
Performance Table Not Relevant to Tax Deferred rr_PerformanceTableNotRelevantToTaxDeferred If you hold your Fund shares through a tax-deferred arrangement, such as an individual retirement account or a 401(k) plan, the after-tax returns do not apply to your situation.
Performance Table Explanation after Tax Higher rr_PerformanceTableExplanationAfterTaxHigher The return after taxes on distributions and sale of Fund shares may exceed the return before taxes due to an assumed tax benefit from any losses on a sale of Fund shares at the end of the measurement period.
Performance Past Does Not Indicate Future [Text] rr_PerformancePastDoesNotIndicateFuture 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 an indication of risk by showing changes in the Fund's performance over time. The bar chart shows how the Fund's performance has varied from year to year. The table shows how the Fund's average annual total returns compare to a broad-based market index for the periods indicated.
Performance Table One Class of after Tax Shown [Text] rr_PerformanceTableOneClassOfAfterTaxShown After-tax returns are shown only for Investor Class shares; after-tax returns for other share classes will vary.
Performance Availability Website Address [Text] rr_PerformanceAvailabilityWebSiteAddress www.americanbeaconfunds.com
(American Beacon Crescent Short Duration High Income Fund℠) | BofA Merrill Lynch U.S High Yield Cash Pay BB-B 1-5 Year Index (Reflects no deduction for fees expenses or taxes)  
Prospectus: rr_ProspectusTable  
1 Year rr_AverageAnnualReturnYear01 12.22%
Since Inception rr_AverageAnnualReturnSinceInception 3.68%
(American Beacon Crescent Short Duration High Income Fund℠) | Class A  
Prospectus: rr_ProspectusTable  
Maximum sales charge imposed on purchases (as a percentage of offering price) rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice 2.50%
Maximum deferred sales charge (as a percentage of the lower of original offering price or redemption proceeds) rr_MaximumDeferredSalesChargeOverOther 0.50% [4]
Management Fees rr_ManagementFeesOverAssets 0.75%
Distribution (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets 0.25%
Other Expenses rr_OtherExpensesOverAssets 0.66%
Acquired Fund Fees and Expenses rr_AcquiredFundFeesAndExpensesOverAssets 0.01%
Total Annual Fund Operating Expenses rr_ExpensesOverAssets 1.67% [2]
Fee Waiver and/or expense reimbursement rr_FeeWaiverOrReimbursementOverAssets (0.41%) [5]
Total Annual Fund Operating Expenses after fee waiver and/or expense reimbursement rr_NetExpensesOverAssets 1.26%
Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 $ 375
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 724
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 1,096
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 $ 2,142
1 Year rr_AverageAnnualReturnYear01 10.16%
Since Inception rr_AverageAnnualReturnSinceInception 2.68%
Inception Date of Class rr_AverageAnnualReturnInceptionDate Oct. 01, 2014
(American Beacon Crescent Short Duration High Income Fund℠) | Class C  
Prospectus: rr_ProspectusTable  
Maximum sales charge imposed on purchases (as a percentage of offering price) rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice none
Maximum deferred sales charge (as a percentage of the lower of original offering price or redemption proceeds) rr_MaximumDeferredSalesChargeOverOther 1.00%
Management Fees rr_ManagementFeesOverAssets 0.75%
Distribution (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets 1.00%
Other Expenses rr_OtherExpensesOverAssets 0.66%
Acquired Fund Fees and Expenses rr_AcquiredFundFeesAndExpensesOverAssets 0.01%
Total Annual Fund Operating Expenses rr_ExpensesOverAssets 2.42% [2]
Fee Waiver and/or expense reimbursement rr_FeeWaiverOrReimbursementOverAssets (0.41%) [5]
Total Annual Fund Operating Expenses after fee waiver and/or expense reimbursement rr_NetExpensesOverAssets 2.01%
Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 $ 304
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 715
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 1,254
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 2,727
Expense Example, No Redemption, 1 Year rr_ExpenseExampleNoRedemptionYear01 204
Expense Example, No Redemption, 3 Years rr_ExpenseExampleNoRedemptionYear03 715
Expense Example, No Redemption, 5 Years rr_ExpenseExampleNoRedemptionYear05 1,254
Expense Example, No Redemption, 10 Years rr_ExpenseExampleNoRedemptionYear10 $ 2,727
1 Year rr_AverageAnnualReturnYear01 9.23%
Since Inception rr_AverageAnnualReturnSinceInception 1.92%
Inception Date of Class rr_AverageAnnualReturnInceptionDate Oct. 01, 2014
(American Beacon Crescent Short Duration High Income Fund℠) | Class Y  
Prospectus: rr_ProspectusTable  
Maximum sales charge imposed on purchases (as a percentage of offering price) rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice none
Maximum deferred sales charge (as a percentage of the lower of original offering price or redemption proceeds) rr_MaximumDeferredSalesChargeOverOther none
Management Fees rr_ManagementFeesOverAssets 0.75%
Distribution (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets none
Other Expenses rr_OtherExpensesOverAssets 0.61%
Acquired Fund Fees and Expenses rr_AcquiredFundFeesAndExpensesOverAssets 0.01%
Total Annual Fund Operating Expenses rr_ExpensesOverAssets 1.37% [2]
Fee Waiver and/or expense reimbursement rr_FeeWaiverOrReimbursementOverAssets (0.41%) [5]
Total Annual Fund Operating Expenses after fee waiver and/or expense reimbursement rr_NetExpensesOverAssets 0.96%
Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 $ 98
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 393
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 711
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 $ 1,610
1 Year rr_AverageAnnualReturnYear01 10.50%
Since Inception rr_AverageAnnualReturnSinceInception 3.00%
Inception Date of Class rr_AverageAnnualReturnInceptionDate Oct. 01, 2014
(American Beacon Crescent Short Duration High Income Fund℠) | Institutional Class  
Prospectus: rr_ProspectusTable  
Maximum sales charge imposed on purchases (as a percentage of offering price) rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice none
Maximum deferred sales charge (as a percentage of the lower of original offering price or redemption proceeds) rr_MaximumDeferredSalesChargeOverOther none
Management Fees rr_ManagementFeesOverAssets 0.75%
Distribution (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets none
Other Expenses rr_OtherExpensesOverAssets 0.51%
Acquired Fund Fees and Expenses rr_AcquiredFundFeesAndExpensesOverAssets 0.01%
Total Annual Fund Operating Expenses rr_ExpensesOverAssets 1.27% [2]
Fee Waiver and/or expense reimbursement rr_FeeWaiverOrReimbursementOverAssets (0.41%) [5]
Total Annual Fund Operating Expenses after fee waiver and/or expense reimbursement rr_NetExpensesOverAssets 0.86%
Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 $ 88
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 362
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 658
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 $ 1,499
1 Year rr_AverageAnnualReturnYear01 10.55%
Since Inception rr_AverageAnnualReturnSinceInception 3.12%
Inception Date of Class rr_AverageAnnualReturnInceptionDate Oct. 01, 2014
(American Beacon Crescent Short Duration High Income Fund℠) | Investor Class  
Prospectus: rr_ProspectusTable  
Maximum sales charge imposed on purchases (as a percentage of offering price) rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice none
Maximum deferred sales charge (as a percentage of the lower of original offering price or redemption proceeds) rr_MaximumDeferredSalesChargeOverOther none
Management Fees rr_ManagementFeesOverAssets 0.75%
Distribution (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets none
Other Expenses rr_OtherExpensesOverAssets 0.81%
Acquired Fund Fees and Expenses rr_AcquiredFundFeesAndExpensesOverAssets 0.01%
Total Annual Fund Operating Expenses rr_ExpensesOverAssets 1.57% [2]
Fee Waiver and/or expense reimbursement rr_FeeWaiverOrReimbursementOverAssets (0.33%) [5]
Total Annual Fund Operating Expenses after fee waiver and/or expense reimbursement rr_NetExpensesOverAssets 1.24%
Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 $ 126
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 463
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 823
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 $ 1,839
Annual Return 2015 rr_AnnualReturn2015 (1.65%)
Annual Return 2016 rr_AnnualReturn2016 10.17%
Year to Date Return, Label rr_YearToDateReturnLabel The calendar year-to-date total return as of 3/31/2017 was 1.48%.
Bar Chart, Year to Date Return rr_BarChartYearToDateReturn 1.48%
Bar Chart, Year to Date Return, Date rr_BarChartYearToDateReturnDate Mar. 31, 2017
Highest Quarterly Return, Label rr_HighestQuarterlyReturnLabel Highest Quarterly Return: 3.66% 3rd Quarter 2016 1/01/2015 through 12/31/2016
Highest Quarterly Return rr_BarChartHighestQuarterlyReturn 3.66%
Highest Quarterly Return, Date rr_BarChartHighestQuarterlyReturnDate Sep. 30, 2016
Lowest Quarterly Return, Label rr_LowestQuarterlyReturnLabel Lowest Quarterly Return: -2.97% 3rd Quarter 2015 1/01/2015 through 12/31/2016
Lowest Quarterly Return rr_BarChartLowestQuarterlyReturn (2.97%)
Lowest Quarterly Return, Date rr_BarChartLowestQuarterlyReturnDate Sep. 30, 2015
1 Year rr_AverageAnnualReturnYear01 10.17%
Since Inception rr_AverageAnnualReturnSinceInception 2.75%
Inception Date of Class rr_AverageAnnualReturnInceptionDate Oct. 01, 2014
(American Beacon Crescent Short Duration High Income Fund℠) | Investor Class | Returns After Taxes on Distributions  
Prospectus: rr_ProspectusTable  
1 Year rr_AverageAnnualReturnYear01 8.02%
Since Inception rr_AverageAnnualReturnSinceInception 0.75%
Inception Date of Class rr_AverageAnnualReturnInceptionDate Oct. 01, 2014
(American Beacon Crescent Short Duration High Income Fund℠) | Investor Class | Returns After Taxes on Distributions and Sales of Fund Shares  
Prospectus: rr_ProspectusTable  
1 Year rr_AverageAnnualReturnYear01 5.70%
Since Inception rr_AverageAnnualReturnSinceInception 1.16%
Inception Date of Class rr_AverageAnnualReturnInceptionDate Oct. 01, 2014
(American Beacon SGA Global Growth Fund℠)  
Prospectus: rr_ProspectusTable  
Objective [Heading] rr_ObjectiveHeading

Investment Objective

Objective, Primary [Text Block] rr_ObjectivePrimaryTextBlock

The Fund's investment objective is long-term 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. You may qualify for sales discounts if you and your eligible family members invest, or agree to invest in the future, at least $50,000 in all classes of the American Beacon Funds on an aggregated basis. More information about these and other discounts is available from your financial professional and in "Choosing Your Share Class" on page 32 of the Prospectus and "Additional Purchase and Sale Information for A Class Shares" on page 46 of the statement of additional information ("SAI"). With respect to purchases of shares through specific intermediaries, you may find additional information regarding sales charge discounts and waivers in Appendix A to the Fund's Prospectus entitled "Intermediary Sales Charge Discounts and Waivers".
Expense Breakpoint Discounts [Text] rr_ExpenseBreakpointDiscounts You may qualify for sales discounts if you and your eligible family members invest, or agree to invest in the future, at least $50,000 in all classes of the American Beacon Funds on an aggregated basis.
Expense Breakpoint, Minimum Investment Required [Amount] rr_ExpenseBreakpointMinimumInvestmentRequiredAmount $ 50,000
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 May 31, 2018
Expenses Deferred Charges [Text Block] rr_ExpensesDeferredChargesTextBlock A contingent deferred sales charge (''CDSC'') of 0.50% will be charged on certain purchases of $1,000,000 or more of A Class shares that are redeemed in whole or part within 18 months of purchase.
Expenses Not Correlated to Ratio Due to Acquired Fund Fees [Text] rr_ExpensesNotCorrelatedToRatioDueToAcquiredFundFees The Total Annual Fund Operating Expenses do not correlate to the ratio of expenses to average net assets provided in the Fund's Financial Highlights table, which reflects the operating expenses of the Fund and does not include Acquired Fund Fees and Expenses.
Expense Example [Heading] rr_ExpenseExampleHeading

Example
Expense Example Narrative [Text Block] rr_ExpenseExampleNarrativeTextBlock

This 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 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 and that the Fund's operating expenses remain the same, except that the Example reflects the fee waiver/expense reimbursement arrangement for each share class through May 31, 2018. Although your actual costs may be higher or lower, based on these assumptions, your costs would be:
Expense Example, No Redemption, By Year, Caption [Text] rr_ExpenseExampleNoRedemptionByYearCaption

Assuming no redemption of shares:
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 32% of the average value of its portfolio.
Portfolio Turnover, Rate rr_PortfolioTurnoverRate 32.00%
Strategy [Heading] rr_StrategyHeading

Principal Investment Strategies

Strategy Narrative [Text Block] rr_StrategyNarrativeTextBlock

The Fund will invest in securities of issuers located throughout the world, including the United States ("U.S."). Under normal circumstances, the Fund will invest primarily in equity securities, with at least 40% of the Fund's net assets in issuers organized, headquartered or doing a substantial amount of business outside the U.S. (or at least 30% if conditions are not deemed favorable by the sub-advisor). The Fund considers an issuer that has at least 50% of its assets or derives at least 50% of its revenue from business outside the U.S. as doing a substantial amount of business outside the U.S. The Fund may invest up to 25% of its net assets in the securities of companies located in countries included in the MSCI Emerging Markets and Frontier Markets Indices.

The Fund's equity investments may include common stocks, preferred stocks, securities convertible into or exchangeable for common stocks, and depositary receipts. The Fund may invest in companies of all market capitalizations, but will generally invest in large and medium capitalization companies and convertible securities of any duration. The Fund's investment sub-advisor, Sustainable Growth Advisers, LP ("SGA") considers large and medium sized companies to be those with market capitalizations over $10 billion and from $2 billion to $10 billion, respectively, at the time of purchase. The Fund will allocate its assets among various regions and countries (but in no less than three non-U.S. countries). The Fund is non-diversified, which means that it is not limited to a percentage of assets that it may invest in any one issuer and may focus its investments in fewer issuers than a Fund with a diversified portfolio. From time to time, the Fund may have a significant portion of its assets invested in the securities of companies in only a few countries and one or a few regions.

SGA may trade forward foreign currency contracts or currency futures in an attempt to reduce the Fund's risk exposure to adverse fluctuations in currency exchange rates. The Fund may also invest cash balances in other investment companies, including money market funds, and may purchase and sell futures contracts to gain market exposure on cash balances or reduce market exposure in anticipation of liquidity needs.

SGA uses an investment process to identify companies that it believes have a high degree of predictability, strong profitability and above average earnings and cash flow growth. SGA selects investments for the Fund's portfolio that it believes have superior long-term earnings prospects and attractive valuation. SGA will sell a portfolio holding when it believes the security's fundamentals deteriorate, its valuation is no longer attractive, or a better investment opportunity arises.

The Fund may lend its securities to broker-dealers and other institutions to earn additional income.
Risk [Heading] rr_RiskHeading

Principal Risks

Risk Narrative [Text Block] rr_RiskNarrativeTextBlock

There is no assurance that the Fund will achieve its investment objective and you could lose part or all of your investment in the Fund. The Fund is not designed for investors who need an assured level of income and is intended to be a long-term investment. The Fund is not a complete investment program and may not be appropriate for all investors. Investors should carefully consider their own investment goals and risk tolerance before investing in the Fund. The principal risks of investing in the Fund are:

Allocation Risk
The sub-advisor's judgments about, and allocations among, asset classes and market exposures may adversely affect the Fund's performance. This risk may be increased by the use of derivatives to increase allocations to various market exposures.

Counterparty Risk
The Fund is subject to the risk that a party or participant to a transaction, such as a broker or derivative counterparty, will be unwilling or unable to satisfy its obligation to make timely principal, interest or settlement payments or to otherwise honor its obligations to the Fund.

Credit Risk
The Fund is subject to the risk that the counterparty to a derivatives contract or a loan will fail to make timely payment of interest or principal or otherwise honor its obligations or default completely.

Currency Risk
The Fund may have exposure to foreign currencies by making investments in securities denominated in non-U.S. currencies, purchasing or trading forward foreign currency contracts or currency futures. Foreign currencies will fluctuate, and may decline, in value relative to the U.S. dollar and other currencies and thereby affect the Fund's investments in foreign (non-U.S.) currencies or in securities that trade in, and receive revenues in, or in derivatives that provide exposure to, foreign (non-U.S.) currencies.

Cybersecurity and Operational Risk
The Fund and its service providers, and shareholders' ability to transact with the Fund, may be negatively impacted due to operational risks arising from, among other problems, human errors, systems and technology disruptions or failures, or cybersecurity incidents. It is not possible for the Fund service providers to identify all of the operational risks that may affect the Fund or to develop processes and controls to completely eliminate or mitigate their occurrence or effects. Cybersecurity incidents could also affect issuers of securities in which the Fund invests, leading to significant loss of value.

Derivatives Risk
Derivatives may involve significant risk. The use of derivative instruments may expose the Fund to additional risks that it would not be subject to if it invested directly in the securities or other instruments underlying those derivatives, including the high degree of leverage often embedded in such instruments, and potential material and prolonged deviations between the theoretical value and realizable value of a derivative. Some derivatives have the potential for unlimited loss, regardless of the size of the Fund's initial investment. Derivatives may be illiquid and may be more volatile than other types of investments. The Fund may buy or sell derivatives not traded on an exchange and which may be subject to heightened liquidity and valuation risk. Derivative investments can increase portfolio turnover and transaction costs. Derivatives also are subject to counterparty risk and credit risk. As a result, the Fund may obtain no recovery of its investment or may only obtain a limited recovery, and any recovery may be delayed. Not all derivative transactions require a counterparty to post collateral, which may expose the Fund to greater losses in the event of a default by a counterparty. In addition, the Fund's investments in derivatives are subject to the following risks:

  • Futures and Forward Contracts, including NDFs. Futures and forward contracts, including non-deliverable forwards ("NDFs"), are derivative instruments pursuant to a contract where one party pays a fixed price for an agreed amount of securities or other underlying assets at an agreed date or to buy or sell a specific currency at a future date at a price set at the time of the contract. There may be an imperfect correlation between the movement in the prices of futures contracts and the value of the underlying instruments or indexes. There can be no assurance that any strategy used will succeed. Not all forward contracts, including NDFs, require a counterparty to post collateral, which may expose the Fund to greater losses in the event of a default by a counterparty. There may not be a liquid secondary market for the futures contracts. Forward currency transactions, including NDFs, and forward currency contracts include the risks associated with fluctuations in currency. Interest rate and Treasury futures contracts expose the Fund to price fluctuations resulting from changes in interest rates. The Fund could suffer a loss if interest rates rise after the Fund has purchased an interest rate futures contract or fall after the Fund has sold an interest rate futures contract. Similarly, Treasury futures contracts expose the Fund to potential losses if interest rates do not move as expected.

Emerging Markets Risk
When investing in emerging markets, the risks of investing in foreign securities discussed below are heightened. Emerging markets are generally smaller, less developed, less liquid and more volatile than the securities markets of the U.S. and other developed markets. There are also risks of: greater political uncertainties; an economy's dependence on revenues from particular commodities or on international aid or development assistance; currency transfer restrictions; a limited number of potential buyers for such securities resulting in increased volatility and limited liquidity for emerging market securities; trading suspensions; and delays and disruptions in securities settlement procedures.

Equity Investments Risk
Equity securities are subject to investment risk and market risk. The Fund's investments in equity securities may include common stocks, preferred stocks, securities convertible into or exchangeable for common stocks, depositary receipts, and U.S. dollar-denominated foreign stocks traded on U.S. exchanges. Such investments may expose the Fund to additional risks.

  • Common Stock. The value of a company's common stock may fall as a result of factors affecting the company, companies in the same industry or sector, or the financial markets overall. Common stock generally is subordinate to preferred stock upon the liquidation or bankruptcy of the issuing company.

  • Convertible Securities. Convertible securities are sensitive to movement in interest rates. In addition, convertible securities are subject to the risk that the credit standing of the issuer may have an effect on the convertible securities' investment value.

  • Depositary Receipts. Depositary receipts and U.S. dollar-denominated foreign stocks traded on U.S. exchanges are subject to certain of the risks associated with investing directly in foreign securities, including, but not limited to, currency exchange rate fluctuations, political and financial instability in the home country of a particular depositary receipt or foreign stock, less liquidity and more volatility, less government regulation and supervision and delays in transaction settlement.

  • Preferred Stock. Preferred stocks are sensitive to movements in interest rates. Preferred stocks may be less liquid than common stocks and, unlike common stocks, participation in the growth of an issuer may be limited. Distributions on preferred stocks generally are payable at the discretion of an issuer and after required payments to bond holders.

Foreign Investing Risk
Non-U.S. investments carry potential risks not associated with U.S. investments. Such risks include, but are not limited to: (1) currency exchange rate fluctuations, (2) political and financial instability, (3) less liquidity, (4) lack of uniform accounting, auditing and financial reporting standards, (5) increased price volatility, (6) less government regulation and supervision of foreign stock exchanges, brokers and listed companies; and (7) delays in transaction settlement in some foreign markets.

Geographic Risk
From time to time, based on market or economic conditions, the Fund may invest a significant portion of its assets in one country or geographic region. If the Fund does so, there is a greater risk that economic, political, diplomatic, social and environmental conditions in that particular country or geographic region may have a significant impact on the Fund's performance.

Growth Companies Risk
Growth companies are expected to increase their earnings at a certain rate. When these expectations are not met, the prices of these stocks may go down, even if earnings showed an absolute increase. Growth company stocks may lack the dividend yield that can cushion stock prices in market downturns.

Hedging Risk
If the Fund uses a hedging instrument at the wrong time or judges the market conditions incorrectly, or the hedged instrument does not correlate to the risk sought to be hedged, the hedge might be unsuccessful, reduce the Fund's return, or create a loss.

Investment Risk
An investment in the Fund is not a deposit with a bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency. When you sell your shares of the Fund, they could be worth less than what you paid for them. Therefore, you may lose money by investing in the Fund.

Issuer Risk
The value of, and/or the return generated by, a security may decline for a number of reasons which directly relate to the issuer, such as management performance, financial leverage and reduced demand for the issuer's goods or services, as well as the historical and prospective earnings of the issuer and the value of its assets.

Large Capitalization Companies Risk
The securities of large market capitalization companies may underperform other segments of the market because such companies may be less responsive to competitive challenges and opportunities and may be unable to attain the high growth rates of successful smaller companies, especially during periods of economic expansion.

Liquidity Risk
The Fund is susceptible to the risk that certain investments held by the Fund, such as derivative instruments, may have limited marketability or be subject to restrictions on sale, and may be difficult or impossible to purchase or sell at favorable times or prices. The Fund could lose money if it is unable to dispose of an investment at a time that is most beneficial to the Fund. The Fund may be required to dispose of investments at unfavorable times or prices to satisfy obligations, which may result in losses or may be costly to the Fund. For example, the Fund may be forced to sell certain investments at unfavorable prices to meet redemption requests or other cash needs. Judgment plays a greater role in pricing illiquid investments than in investments with more active markets.

Market Risk
The Fund is subject to the risk that the securities markets will move down, sometimes rapidly and unpredictably based on overall economic conditions and other factors. The value of a security may decline due to general market conditions which are not specifically related to a particular company, such as real or perceived adverse economic conditions, changes in the general outlook for corporate earnings, changes in interest or currency rates or adverse investment sentiment generally. Changes in the financial condition of a single issuer can impact a market as a whole.

Market Timing Risk
Because the Fund invests in foreign securities, or it has exposure to foreign securities through the derivatives it holds, it is particularly subject to the risk of market timing activities. Frequent trading by Fund shareholders poses risks to other shareholders in the Fund, including (i) the dilution of the Fund's net asset value ("NAV"), (ii) an increase in the Fund's expenses, and (iii) interference with the portfolio manager's ability to execute efficient investment strategies. Because of specific types of securities in which the Fund may invest, it could be subject to the risk of market timing activities by shareholders.

Non-Diversification Risk
The Fund is non-diversified, which means the Fund may focus its investments in the securities of a comparatively small number of issuers. Investments in securities of a limited number of issuers exposes the Fund to greater market risk and potential losses than if assets were diversified among the securities of a greater number of issuers.

Other Investment Companies Risk
The Fund may invest in shares of other registered investment companies, including money market funds. To the extent that the Fund invests in shares of other registered investment companies, you will indirectly bear fees and expenses charged by those investment companies in addition to the Fund's direct fees and expenses and will be subject to the risks associated with investments in those funds. Money market funds are subject to interest rate risk, credit risk, and market risk.

Sector Risk
When the Fund focuses its investments in certain sectors of the economy, its performance may be driven largely by sector performance and could fluctuate more widely than if the Fund were invested more evenly across sectors.

Information Technology Sector Risk
The Fund may, at times, invest more than 25% of its net assets in companies in the information technology sector. The market prices of information technology-related securities tend to exhibit a greater degree of market risk and sharp price fluctuations than other types of securities. These securities may fall in and out of favor with investors rapidly, which may cause sudden selling and dramatically lower market prices.

Securities Lending Risk
To the extent the Fund lends its securities, it may be subject to the following risks: i) borrowers of the Fund's securities typically provide collateral in the form of cash that is reinvested in securities, ii) the securities in which the collateral is invested may not perform sufficiently to cover the return collateral payments owed to borrowers, iii) delays may occur in the recovery of securities from borrowers, which could interfere with the Fund's ability to vote proxies or to settle transactions, and iv) there is the risk of possible loss of rights in the collateral should the borrower fail financially.

Securities Selection Risk
Securities selected by the sub-advisor or the Manager for the Fund may not perform to expectations. This could result in the Fund's underperformance compared to other funds with similar investment objectives.

Segregated Assets Risk
In connection with certain transactions that may give rise to future payment obligations, including investments in derivatives, the Fund may be required to maintain a segregated amount of, or otherwise earmark, cash or liquid securities to cover the position or transaction, which cannot be sold while the position they are covering is outstanding, unless they are replaced with other assets of equal value. The need to maintain cash or other liquid securities in segregated accounts could limit the Fund's ability to pursue other opportunities as they arise.

Small and Mid-Capitalization Companies Risk
Investing in the securities of small and mid-capitalization companies involves greater risk and the possibility of greater price volatility than investing in larger capitalization and more established companies. Since small and mid-capitalization companies may have limited operating history, product lines, and financial resources, the securities of these companies may lack sufficient market liquidity, and they can be particularly sensitive to expected changes in interest rates, borrowing costs and earnings. In general, these risks are greater for small-capitalization companies than for mid-capitalization companies.

Valuation Risk
The Fund may value certain assets at a price different from the price at which they can be sold. This risk may be especially pronounced for investments, such as certain derivatives, which may be illiquid or which may become illiquid.
Risk Nondiversified Status [Text] rr_RiskNondiversifiedStatus Non-Diversification Risk The Fund is non-diversified, which means the Fund may focus its investments in the securities of a comparatively small number of issuers. Investments in securities of a limited number of issuers exposes the Fund to greater market risk and potential losses than if assets were diversified among the securities of a greater number of issuers.
Risk Lose Money [Text] rr_RiskLoseMoney There is no assurance that the Fund will achieve its investment objective and you could lose part or all of your investment in the Fund.
Risk Not Insured Depository Institution [Text] rr_RiskNotInsuredDepositoryInstitution An investment in the Fund is not a deposit with a 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

Fund Performance

Performance Narrative [Text Block] rr_PerformanceNarrativeTextBlock

The bar chart and table below provide an indication of risk by showing changes in the Fund's performance over time. The bar chart shows how the Fund's performance has varied from year to year. The table shows how the Fund's average annual total returns compare to a broad-based market index for the 1- and 5-year and since-inception periods.

The Investor Class shares of the Fund have adopted the performance history and financial statements of the shares of the Fund's predecessor. The performance of the Fund's Investor Class shares shown in the chart and table below represent the returns achieved by the shares of the Fund's predecessor from December 31, 2010 to October 4, 2013, and the performance of the Investor Class shares from October 4, 2013 through December 31, 2016. The table below also shows the performance of the Fund's A, C, Y and Institutional Class shares, which reflects the returns achieved by the shares of the Fund's predecessor from December 31, 2010 through October 4, 2013, and the performance of each of the Fund's respective share classes from October 4, 2013 through December 31, 2016. In each case, the newer share classes would have had similar annual returns to the predecessor fund's shares because the shares of each class represent investments in the same portfolio of securities. However, shares of the predecessor fund had different expenses than the newer classes, which would affect performance. You may obtain updated performance information on the Fund's website at www.americanbeaconfunds.com. 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

Calendar year total returns for Investor Class Shares. Year Ended 12/31
Bar Chart Closing [Text Block] rr_BarChartClosingTextBlock

Highest Quarterly Return:
16.02% 1st Quarter 2012
1/01/2011 through 12/31/2016

Lowest Quarterly Return:
-14.13% 3rd Quarter 2011
1/01/2011 through 12/31/2016

The calendar year-to-date total return as of 3/31/2017 was 9.46%.
Performance Table Heading rr_PerformanceTableHeading

Average annual total returns for periods ended December 31, 2016
Performance Table Closing [Text Block] rr_PerformanceTableClosingTextBlock

After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local income taxes. Actual after-tax returns depend on an investor's tax situation and may differ from those shown. The return after taxes on distributions and sale of Fund shares may exceed the return before taxes due to an assumed tax benefit from any losses on a sale of Fund shares at the end of the measurement period. If you hold your Fund shares through a tax-deferred arrangement, such as an individual retirement account or a 401(k) plan, the after-tax returns do not apply to your situation. After-tax returns are shown only for Investor Class shares; after-tax returns for other share classes will vary.
Performance Table Uses Highest Federal Rate rr_PerformanceTableUsesHighestFederalRate After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local income taxes.
Performance Table Not Relevant to Tax Deferred rr_PerformanceTableNotRelevantToTaxDeferred If you hold your Fund shares through a tax-deferred arrangement, such as an individual retirement account or a 401(k) plan, the after-tax returns do not apply to your situation.
Performance Table Explanation after Tax Higher rr_PerformanceTableExplanationAfterTaxHigher The return after taxes on distributions and sale of Fund shares may exceed the return before taxes due to an assumed tax benefit from any losses on a sale of Fund shares at the end of the measurement period.
Performance Past Does Not Indicate Future [Text] rr_PerformancePastDoesNotIndicateFuture 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 an indication of risk by showing changes in the Fund's performance over time. The bar chart shows how the Fund's performance has varied from year to year. The table shows how the Fund's average annual total returns compare to a broad-based market index for the 1- and 5-year and since-inception periods.
Performance Table One Class of after Tax Shown [Text] rr_PerformanceTableOneClassOfAfterTaxShown After-tax returns are shown only for Investor Class shares; after-tax returns for other share classes will vary.
Performance Availability Website Address [Text] rr_PerformanceAvailabilityWebSiteAddress www.americanbeaconfunds.com
(American Beacon SGA Global Growth Fund℠) | MSCI All Country World Index (Reflects no deduction for fees expenses or taxes)  
Prospectus: rr_ProspectusTable  
1 Year rr_AverageAnnualReturnYear01 7.86%
5 Years rr_AverageAnnualReturnYear05 9.36%
Since Inception rr_AverageAnnualReturnSinceInception 6.38%
(American Beacon SGA Global Growth Fund℠) | MSCI All Country World Growth Index (Reflects no deduction for fees expenses or taxes)  
Prospectus: rr_ProspectusTable  
1 Year rr_AverageAnnualReturnYear01 3.27%
5 Years rr_AverageAnnualReturnYear05 9.71%
Since Inception rr_AverageAnnualReturnSinceInception 6.66%
(American Beacon SGA Global Growth Fund℠) | Class A  
Prospectus: rr_ProspectusTable  
Maximum sales charge imposed on purchases (as a percentage of offering price) rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice 5.75%
Maximum deferred sales charge (as a percentage of the lower of original offering price or redemption proceeds) rr_MaximumDeferredSalesChargeOverOther 0.50% [1]
Management Fees rr_ManagementFeesOverAssets 0.79%
Distribution (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets 0.25%
Other Expenses rr_OtherExpensesOverAssets 1.29%
Acquired Fund Fees and Expenses rr_AcquiredFundFeesAndExpensesOverAssets 0.01%
Total Annual Fund Operating Expenses rr_ExpensesOverAssets 2.34% [2]
Fee Waiver and/or expense reimbursement rr_FeeWaiverOrReimbursementOverAssets (0.95%) [6]
Total Annual Fund Operating Expenses after fee waiver and/or expense reimbursement rr_NetExpensesOverAssets 1.39%
Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 $ 708
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 1,178
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 1,673
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 $ 3,029
1 Year rr_AverageAnnualReturnYear01 4.07%
5 Years rr_AverageAnnualReturnYear05 9.46%
Since Inception rr_AverageAnnualReturnSinceInception 8.36%
Inception Date of Class rr_AverageAnnualReturnInceptionDate Oct. 04, 2013
(American Beacon SGA Global Growth Fund℠) | Class C  
Prospectus: rr_ProspectusTable  
Maximum sales charge imposed on purchases (as a percentage of offering price) rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice none
Maximum deferred sales charge (as a percentage of the lower of original offering price or redemption proceeds) rr_MaximumDeferredSalesChargeOverOther 1.00%
Management Fees rr_ManagementFeesOverAssets 0.79%
Distribution (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets 1.00%
Other Expenses rr_OtherExpensesOverAssets 1.29%
Acquired Fund Fees and Expenses rr_AcquiredFundFeesAndExpensesOverAssets 0.01%
Total Annual Fund Operating Expenses rr_ExpensesOverAssets 3.09% [2]
Fee Waiver and/or expense reimbursement rr_FeeWaiverOrReimbursementOverAssets (0.95%) [6]
Total Annual Fund Operating Expenses after fee waiver and/or expense reimbursement rr_NetExpensesOverAssets 2.14%
Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 $ 317
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 865
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 1,538
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 3,335
Expense Example, No Redemption, 1 Year rr_ExpenseExampleNoRedemptionYear01 217
Expense Example, No Redemption, 3 Years rr_ExpenseExampleNoRedemptionYear03 865
Expense Example, No Redemption, 5 Years rr_ExpenseExampleNoRedemptionYear05 1,538
Expense Example, No Redemption, 10 Years rr_ExpenseExampleNoRedemptionYear10 $ 3,335
1 Year rr_AverageAnnualReturnYear01 3.29%
5 Years rr_AverageAnnualReturnYear05 8.93%
Since Inception rr_AverageAnnualReturnSinceInception 7.92%
Inception Date of Class rr_AverageAnnualReturnInceptionDate Oct. 04, 2013
(American Beacon SGA Global Growth Fund℠) | Class Y  
Prospectus: rr_ProspectusTable  
Maximum sales charge imposed on purchases (as a percentage of offering price) rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice none
Maximum deferred sales charge (as a percentage of the lower of original offering price or redemption proceeds) rr_MaximumDeferredSalesChargeOverOther none
Management Fees rr_ManagementFeesOverAssets 0.79%
Distribution (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets none
Other Expenses rr_OtherExpensesOverAssets 1.09%
Acquired Fund Fees and Expenses rr_AcquiredFundFeesAndExpensesOverAssets 0.01%
Total Annual Fund Operating Expenses rr_ExpensesOverAssets 1.89% [2]
Fee Waiver and/or expense reimbursement rr_FeeWaiverOrReimbursementOverAssets (0.80%) [6]
Total Annual Fund Operating Expenses after fee waiver and/or expense reimbursement rr_NetExpensesOverAssets 1.09%
Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 $ 111
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 516
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 947
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 $ 2,146
1 Year rr_AverageAnnualReturnYear01 4.39%
5 Years rr_AverageAnnualReturnYear05 9.67%
Since Inception rr_AverageAnnualReturnSinceInception 8.53%
Inception Date of Class rr_AverageAnnualReturnInceptionDate Oct. 04, 2013
(American Beacon SGA Global Growth Fund℠) | Institutional Class  
Prospectus: rr_ProspectusTable  
Maximum sales charge imposed on purchases (as a percentage of offering price) rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice none
Maximum deferred sales charge (as a percentage of the lower of original offering price or redemption proceeds) rr_MaximumDeferredSalesChargeOverOther none
Management Fees rr_ManagementFeesOverAssets 0.79%
Distribution (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets none
Other Expenses rr_OtherExpensesOverAssets 1.24%
Acquired Fund Fees and Expenses rr_AcquiredFundFeesAndExpensesOverAssets 0.01%
Total Annual Fund Operating Expenses rr_ExpensesOverAssets 2.04% [2]
Fee Waiver and/or expense reimbursement rr_FeeWaiverOrReimbursementOverAssets (1.05%) [6]
Total Annual Fund Operating Expenses after fee waiver and/or expense reimbursement rr_NetExpensesOverAssets 0.99%
Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 $ 101
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 538
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 1,001
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 $ 2,285
1 Year rr_AverageAnnualReturnYear01 4.45%
5 Years rr_AverageAnnualReturnYear05 9.75%
Since Inception rr_AverageAnnualReturnSinceInception 8.59%
Inception Date of Class rr_AverageAnnualReturnInceptionDate Dec. 31, 2010
(American Beacon SGA Global Growth Fund℠) | Investor Class  
Prospectus: rr_ProspectusTable  
Maximum sales charge imposed on purchases (as a percentage of offering price) rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice none
Maximum deferred sales charge (as a percentage of the lower of original offering price or redemption proceeds) rr_MaximumDeferredSalesChargeOverOther none
Management Fees rr_ManagementFeesOverAssets 0.79%
Distribution (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets none
Other Expenses rr_OtherExpensesOverAssets 1.26%
Acquired Fund Fees and Expenses rr_AcquiredFundFeesAndExpensesOverAssets 0.01%
Total Annual Fund Operating Expenses rr_ExpensesOverAssets 2.06% [2]
Fee Waiver and/or expense reimbursement rr_FeeWaiverOrReimbursementOverAssets (0.69%) [6]
Total Annual Fund Operating Expenses after fee waiver and/or expense reimbursement rr_NetExpensesOverAssets 1.37%
Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 $ 139
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 579
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 1,045
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 $ 2,334
Annual Return 2011 rr_AnnualReturn2011 3.00%
Annual Return 2012 rr_AnnualReturn2012 15.85%
Annual Return 2013 rr_AnnualReturn2013 19.82%
Annual Return 2014 rr_AnnualReturn2014 1.05%
Annual Return 2015 rr_AnnualReturn2015 7.71%
Annual Return 2016 rr_AnnualReturn2016 4.07%
Year to Date Return, Label rr_YearToDateReturnLabel The calendar year-to-date total return as of 3/31/2017 was 9.46%.
Bar Chart, Year to Date Return rr_BarChartYearToDateReturn 9.46%
Bar Chart, Year to Date Return, Date rr_BarChartYearToDateReturnDate Mar. 31, 2017
Highest Quarterly Return, Label rr_HighestQuarterlyReturnLabel Highest Quarterly Return: 16.02% 1st Quarter 2012 1/01/2011 through 12/31/2016
Highest Quarterly Return rr_BarChartHighestQuarterlyReturn 16.02%
Highest Quarterly Return, Date rr_BarChartHighestQuarterlyReturnDate Mar. 31, 2012
Lowest Quarterly Return, Label rr_LowestQuarterlyReturnLabel Lowest Quarterly Return: -14.13% 3rd Quarter 2011 1/01/2011 through 12/31/2016
Lowest Quarterly Return rr_BarChartLowestQuarterlyReturn (14.13%)
Lowest Quarterly Return, Date rr_BarChartLowestQuarterlyReturnDate Sep. 30, 2011
1 Year rr_AverageAnnualReturnYear01 4.07%
5 Years rr_AverageAnnualReturnYear05 9.48%
Since Inception rr_AverageAnnualReturnSinceInception 8.37%
Inception Date of Class rr_AverageAnnualReturnInceptionDate Oct. 04, 2013
(American Beacon SGA Global Growth Fund℠) | Investor Class | Returns After Taxes on Distributions  
Prospectus: rr_ProspectusTable  
1 Year rr_AverageAnnualReturnYear01 3.06%
5 Years rr_AverageAnnualReturnYear05 8.87%
Since Inception rr_AverageAnnualReturnSinceInception 7.87%
Inception Date of Class rr_AverageAnnualReturnInceptionDate Oct. 04, 2013
(American Beacon SGA Global Growth Fund℠) | Investor Class | Returns After Taxes on Distributions and Sales of Fund Shares  
Prospectus: rr_ProspectusTable  
1 Year rr_AverageAnnualReturnYear01 2.94%
5 Years rr_AverageAnnualReturnYear05 7.47%
Since Inception rr_AverageAnnualReturnSinceInception 6.63%
Inception Date of Class rr_AverageAnnualReturnInceptionDate Oct. 04, 2013
(American Beacon GLG Total Return Fund℠)  
Prospectus: rr_ProspectusTable  
Objective [Heading] rr_ObjectiveHeading

Investment Objective

Objective, Primary [Text Block] rr_ObjectivePrimaryTextBlock

The Fund's investment objective is to seek high current income and 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. You may qualify for sales discounts if you and your eligible family members invest, or agree to invest in the future, at least $50,000 in all classes of the American Beacon Funds on an aggregated basis. More information about these and other discounts is available from your financial professional and in "Choosing Your Share Class" on page 18 of the Prospectus and "Additional Purchase and Sale Information for A Class Shares" on page 35 of the statement of additional information ("SAI"). With respect to purchases of shares through specific intermediaries, you may find additional information regarding sales charge discounts and waivers in Appendix A to the Fund's Prospectus entitled "Intermediary Sales Charge Discounts and Waivers".
Expense Breakpoint Discounts [Text] rr_ExpenseBreakpointDiscounts You may qualify for sales discounts if you and your eligible family members invest, or agree to invest in the future, at least $50,000 in all classes of the American Beacon Funds on an aggregated basis.
Expense Breakpoint, Minimum Investment Required [Amount] rr_ExpenseBreakpointMinimumInvestmentRequiredAmount $ 50,000
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 May 31, 2018
Expenses Deferred Charges [Text Block] rr_ExpensesDeferredChargesTextBlock A contingent deferred sales charge (''CDSC'') of 0.50% will be charged on certain purchases of $1,000,000 or more of A Class shares that are redeemed in whole or part within 18 months of purchase.
Expenses Not Correlated to Ratio Due to Acquired Fund Fees [Text] rr_ExpensesNotCorrelatedToRatioDueToAcquiredFundFees The Total Annual Fund Operating Expenses do not correlate to the ratio of expenses to average net assets provided in the Fund's Financial Highlights table, which reflects the operating expenses of the Fund and does not include Acquired Fund Fees and Expenses.
Expense Example [Heading] rr_ExpenseExampleHeading

Example
Expense Example Narrative [Text Block] rr_ExpenseExampleNarrativeTextBlock

This 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 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 and that the Fund's operating expenses remain the same, except that the Example reflects the fee waiver/expense reimbursement arrangement for each share class through May 31, 2018. Although your actual costs may be higher or lower, based on these assumptions, your costs would be:
Expense Example, No Redemption, By Year, Caption [Text] rr_ExpenseExampleNoRedemptionByYearCaption

Assuming no redemption of shares:
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. For the period May 20, 2016 to January 31, 2017, the Fund's portfolio turnover rate was 311% of the average value of its portfolio.
Portfolio Turnover, Rate rr_PortfolioTurnoverRate 311.00%
Strategy [Heading] rr_StrategyHeading

Principal Investment Strategies

Strategy Narrative [Text Block] rr_StrategyNarrativeTextBlock

The Fund seeks to achieve high current income and capital appreciation by investing primarily in securities (excluding U.S. Dollar denominated cash and cash equivalents) of issuers that are economically tied to emerging market countries. The Fund's strategy is managed in an absolute-return style and is not managed with reference to a benchmark. The Fund also may achieve its objective when stronger macroeconomic and political circumstances in emerging market countries lead to lower interest rates, lower credit spreads, or stronger currencies.

The securities in which the Fund primarily invests include debentures, sovereign and quasi-sovereign debt, corporate obligations, high-yield securities (commonly referred to as "junk bonds"), unrated securities, and, to a lesser extent, equities, equity equivalents and exchange-traded funds ("ETFs") that provide exposure to these types of investments. The Fund may also invest in investment-grade securities, callable securities, restricted securities, variable and floating-rate securities, separate trading of registered interest and principal of securities ("STRIPS") and zero-coupon securities. The Fund's investments may include fixed-income securities of various maturities and durations.

The Fund may invest in derivatives, including futures (such as interest-rate futures), forwards (such as currency and non-deliverable forwards ("NDFs")), options (such as interest-rate options) and swaps (such as interest-rate, total-return, cross-currency and credit-default swaps). The Fund may engage in short sales (primarily by taking short positions with derivatives). The Fund may use derivative instruments to enhance total return, manage certain investment risks, serve as a substitute for the purchase or sale of the underlying security or currency, or to seek tax-advantaged access to the underlying instruments. Derivatives allow the Fund to obtain economic exposure without directly holding the underlying security in the event that regulatory, transaction cost, or other factors increase the difficultly or reduce the desirability of holding the underlying security.

The Fund may make direct investments in non-U.S. currencies and in securities denominated in non-U.S. currencies, and the Fund may invest in derivative instruments tied to non-U.S. currencies (including indexes or baskets of such currencies). These investments are intended to enhance the Fund's returns or to reduce its risk.

Derivatives are generally treated as economically tied to emerging market countries if the underlying assets are, or if the performance of the instrument is otherwise determined with reference to, interest rates of emerging market countries or securities issued by governments or other issuers organized under the laws of emerging market countries.

A significant portion of the portfolio may be retained in cash and cash equivalents at times when the sub-advisor determines that suitable investment opportunities are not available and, as necessary, to provide asset coverage for the Fund's derivative investments. Cash instruments typically may include liquid government debt instruments and money market mutual fund investments, but they also may include time deposits, certificates of deposit, commercial paper and other money market instruments.

For purposes of the Fund's investment strategy, an "emerging markets" country is any country:

(i) having an "emerging stock market" as defined by the International Finance Corporation;

(ii) with low- to middle-income economies according to the International Bank for Reconstruction and Development (the "World Bank");

(iii) listed in World Bank publications as developing; or

(iv) determined by the sub-advisor to be an emerging market.

Currently, these countries generally include every country in the world except Australia, Austria, Belgium, Canada, Denmark, Finland, France, Germany, Ireland, Israel, Italy, Japan, the Netherlands, New Zealand, Norway, Singapore, Spain, Sweden, Switzerland, the United Kingdom and the United States.

An instrument is economically tied to an emerging market country if:

(i) the issuer is the government (or any political subdivision, agency, authority or instrumentality of such government) of an emerging market country;

(ii) the instrument is principally traded on an emerging market country's securities markets; or

(iii) the issuer is organized or principally operates in an emerging market country, derives 50% or more of its income from its operation within the country, or has 50% or more of its assets in the country.

In making investment decisions for the Fund, the sub-advisor employs an investment process in which country issuers, currencies, and interest-rate curves are analyzed based on information obtained from dedicated in-house market research, local resources, travel to the region, and a variety of other sources, including third-party data providers. The analysis intends to capture most of the upside of an investment and reduce the potential for downside exposure relative to traditional investment strategies. The Fund generally will engage in active and frequent trading of portfolio securities to achieve its investment objective.

The Fund is non-diversified, which means that it may invest a high percentage of its assets in a limited number of issuers.
Risk [Heading] rr_RiskHeading

Principal Risks

Risk Narrative [Text Block] rr_RiskNarrativeTextBlock

There is no assurance that the Fund will achieve its investment objective and you could lose part or all of your investment in the Fund. The Fund is not designed for investors who need an assured level of income and is intended to be a long-term investment. The Fund is not a complete investment program and may not be appropriate for all investors. Investors should carefully consider their own investment goals and risk tolerance before investing in the Fund. The principal risks of investing in the Fund are:

Allocation Risk
The sub-advisor's judgments about, and allocations among, asset classes and market exposures may adversely affect the Fund's performance. This risk may be increased by the use of derivatives to increase allocations to various market exposures.

Callable Securities Risk
The Fund may invest in fixed-income securities with call features. A call feature allows the issuer of the security to redeem or call the security prior to its stated maturity date. In periods of falling interest rates, issuers may be more likely to call in securities that are paying higher coupon rates than prevailing interest rates. In the event of a call, the Fund would lose the income that would have been earned to maturity on that security, and the proceeds received by the Fund may be invested in securities paying lower coupon rates and may not benefit from any increase in value that might otherwise result from declining interest rates. Interest-only and principal-only securities are especially sensitive to interest rate changes, which can affect not only the prices but can also change the income flows and repayment assumptions about those investments.

Counterparty Risk
The Fund is subject to the risk that a party or participant to a transaction, such as a broker or derivative counterparty, will be unwilling or unable to satisfy its obligation to make timely principal, interest or settlement payments or to otherwise honor its obligations to the Fund.

Credit Risk
The Fund is subject to the risk that the issuer or guarantor of a debt security, or the counterparty to a derivatives contract or a loan will fail to make timely payment of interest or principal or otherwise honor its obligations or default completely. Credit risk is typically greater for securities with ratings that are below investment grade (commonly referred to as "junk bonds"). Since the Fund can invest significantly in lower-quality debt securities considered speculative in nature, this risk will be substantial. A downgrade or default affecting any of the Fund's securities could affect the Fund's performance.

Currency Risk
The Fund may have exposure to foreign currencies by making direct investments in non-U.S. currencies or in securities denominated in non-U.S. currencies, purchasing or selling forward currency exchange contracts in non-U.S. currencies, including non-deliverable forwards, non-U.S. currency futures contracts, options on non-U.S. currencies and non-U.S. currency futures and swaps for cross-currency transaction. Foreign currencies will fluctuate, and may decline in value relative to the U.S. dollar and other currencies and thereby affect the Fund's investments in foreign (non-U.S.) currencies or in securities that trade in, and receive revenues in, or in derivatives that provide exposure to, foreign (non-U.S.) currencies.

Cybersecurity and Operational Risk
The Fund and its service providers, and shareholders' ability to transact with the Fund, may be negatively impacted due to operational risks arising from, among other problems, human errors, systems and technology disruptions or failures, or cybersecurity incidents. It is not possible for the Fund service providers to identify all of the operational risks that may affect the Fund or to develop processes and controls to completely eliminate or mitigate their occurrence or effects. Cybersecurity incidents could also affect issuers of securities in which the Fund invests, leading to significant loss of value.

Derivatives Risk
Derivatives may involve significant risk. The use of derivative instruments may expose the Fund to additional risks that it would not be subject to if it invested directly in the securities or other instruments underlying those derivatives, including the high degree of leverage often embedded in such instruments, and potential material and prolonged deviations between the theoretical value and realizable value of a derivative. Some derivatives have the potential for unlimited loss, regardless of the size of the Fund's initial investment. Derivatives may be illiquid and may be more volatile than other types of investments. The Fund may buy or sell derivatives not traded on an exchange and which may be subject to heightened liquidity and valuation risk. Derivative investments can increase portfolio turnover and transaction costs. Derivatives also are subject to counterparty risk. As a result, the Fund may obtain no recovery of its investment or may only obtain a limited recovery, and any recovery may be delayed. Not all derivative transactions require a counterparty to post collateral, which may expose the Fund to greater losses in the event of a default by a counterparty. In addition, the Fund's investments in derivatives are subject to the following risks:

  • Futures and Forward Contracts. Futures and forward contracts, including non-deliverable forwards ("NDFs"), are derivative instruments pursuant to a contract where one party pays a fixed price for an agreed amount of securities or other underlying assets at an agreed date or to buy or sell a specific currency at a future date at a price set at the time of the contract. There may be an imperfect correlation between the movement in the prices of futures contracts and the value of the underlying instruments or indexes. There can be no assurance that any strategy used will succeed. Not all forward contracts, including NDFs, require a counterparty to post collateral, which may expose the Fund to greater losses in the event of a default by a counterparty. There may not be a liquid secondary market for the futures contracts. Forward currency transactions, including NDFs, and forward currency contracts include the risks associated with fluctuations in currency. Interest rate and Treasury futures contracts expose the Fund to price fluctuations resulting from changes in interest rates. The Fund could suffer a loss if interest rates rise after the Fund has purchased an interest rate futures contract or fall after the Fund has sold an interest rate futures contract. Similarly, Treasury futures contracts expose the Fund to potential losses if interest rates do not move as expected.

  • Options. In order for a call option to be profitable, the market price of the underlying security must rise sufficiently above the call option exercise price to cover the premium and transaction costs. These costs will reduce any profit that might otherwise have been realized had the Fund bought the underlying security instead of the call option. For a put option to be profitable, the market price of the underlying security must decline sufficiently below the put option's exercise price to cover the premium and transaction costs. By using put options in this manner, the Fund will reduce any profit it might otherwise have realized from having shorted the declining underlying security by the premium paid for the put option and by transaction costs. If the Fund sells a put option, there is a risk that the Fund may be required to buy the underlying asset at a disadvantageous price. If the Fund sells a call option, there is a risk that the Fund may be required to sell the underlying asset at a disadvantageous price. If the Fund sells a call option on an underlying asset that the Fund owns and the underlying asset has increased in value when the call option is exercised, the Fund will be required to sell the underlying asset at the call price and will not be able to realize any of the underlying asset's value above the call price.

  • Swap Agreements. Swaps can involve greater risks than a direct investment in an underlying asset, because swaps typically include a certain amount of embedded leverage and as such are subject to leveraging risk. If swaps are used as a hedging strategy, the Fund is subject to the risk that the hedging strategy may not eliminate the risk that it is intended to offset, due to, among other reasons, the occurrence of unexpected price movements or the non-occurrence of expected price movements. Swaps also may be difficult to value. Interest rate swaps, total return swaps, cross-currency swaps and credit default swaps are subject to counterparty risk, credit risk and liquidity risk. In addition, interest rate swaps are subject to interest rate risk, total return swaps are subject to market risk and interest rate risk if the underlying securities are bonds or other debt obligations, and currency swaps are subject to currency risk.

Emerging Markets Risk
When investing in emerging markets, the risks of investing in foreign securities discussed below are heightened. Emerging markets are generally smaller, less developed, less liquid and more volatile than the securities markets of the U.S. and other developed markets. There are also risks of: greater political uncertainties; an economy's dependence on revenues from particular commodities or on international aid or development assistance; currency transfer restrictions; a limited number of potential buyers for such securities resulting in increased volatility and limited liquidity for emerging market securities; trading suspensions; and delays and disruptions in securities settlement procedures.

Equity Investments Risk
Equity securities are subject to investment risk and market risk. The Fund's investments in equity securities may include common stocks. Investing in such securities may expose the Fund to additional risk. The value of a company's common stock may fall as a result of factors affecting the company, companies in the same industry or sector, or the financial markets overall. Common stock generally is subordinate to preferred stock upon the liquidation or bankruptcy of the issuing company.

Foreign Investing Risk
Non-U.S. investments carry potential risks not associated with U.S. investments. Such risks include, but are not limited to: (1) currency exchange rate fluctuations, (2) political and financial instability, (3) less liquidity, (4) lack of uniform accounting, auditing and financial reporting standards, (5) increased price volatility, (6) less government regulation and supervision of foreign stock exchanges, brokers and listed companies, and (7) delays in transaction settlement in some foreign markets.

Hedging Risk
If the Fund uses a hedging instrument at the wrong time or judges the market conditions incorrectly, or the hedged instrument does not correlate to the risk sought to be hedged, the hedge might be unsuccessful, reduce the Fund's return, or create a loss.

High Portfolio Turnover Risk
Portfolio turnover is a measure of the Fund's trading activity over a one-year period. High portfolio turnover could increase the Fund's transaction costs, have a negative impact on performance, and generate higher capital gain distributions to shareholders than if the Fund had a lower portfolio turnover rate.

High Yield Securities Risk
Investing in high yield, below investment-grade securities (commonly referred to as "junk bonds") generally involves significantly greater risks of loss of your money than an investment in investment grade securities. High yield debt securities may fluctuate more widely in price and yield and may fall in price when the economy is weak or expected to become weak. High yield securities are considered to be speculative with respect to an issuer's ability to pay interest and principal and carry a greater risk that the issuers of lower-rated securities will default on the timely payment of principal and interest. Below investment grade securities may experience greater price volatility and less liquidity than investment grade securities.

Illiquid and Restricted Securities Risk
Securities not registered in the U.S. under the Securities Act of 1933, as amended (the "Securities Act"), including Rule 144A securities, are restricted as to their resale. Such securities may not be listed on an exchange and may have no active trading market. They may be more difficult to purchase or sell at an advantageous time or price because such securities may not be readily marketable in broad public markets, or may have to be held for a certain time period before they can be resold. The Fund may not be able to sell a restricted security when the sub-advisor considers it desirable to do so and/or may have to sell the security at a lower price than the Fund believes is its fair market value. In addition, transaction costs may be higher for restricted securities and the Fund may receive only limited information regarding the issuer of a restricted security. The Fund may have to bear the expense of registering restricted securities for resale and the risk of substantial delays in effecting the registration.

Interest Rate Risk
The Fund is subject to the risk that the market value of fixed income securities or derivatives it holds will decline due to rising interest rates. Generally, the value of investments with interest rate risk, such as fixed income securities, will move in the opposite direction to movements in interest rates. The Federal Reserve raised the federal funds rate in December 2016 and March 2017 and has signaled additional increases in 2017. Interest rates may rise, perhaps significantly and/or rapidly, potentially resulting in substantial losses to the Fund. The prices of fixed income securities or derivatives are also affected by their durations. Fixed income securities or derivatives with longer durations generally have greater sensitivity to changes in interest rates. For example, if a bond has a duration of five years, a 1% increase in interest rates could be expected to result in a 5% decrease in the value of the bond. Significant upward pressure on domestic interest rates and a corresponding widening of credit spreads could negatively impact the market price of emerging debt investments. An increase in interest rates can impact markets broadly as well. Some investors buy securities and derivatives with borrowed money; an increase in interest rates can cause a decline in those markets.

Investment Risk
An investment in the Fund is not a deposit with a bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency. When you sell your shares of the Fund, they could be worth less than what you paid for them. Therefore, you may lose money by investing in the Fund.

Issuer Risk
The value of, and/or the return generated by, a security may decline for a number of reasons which directly relate to the issuer, such as management performance, financial leverage and reduced demand for the issuer's goods or services, as well as the historical and prospective earnings of the issuer and the value of its assets.

Leverage Risk
The Fund's use of futures, forward contracts, swaps, options and other derivative instruments and selling securities short will have the economic effect of financial leverage. Financial leverage magnifies the exposure to the swings in prices of an asset or class of assets underlying a derivative instrument and results in increased volatility, which means that the Fund will have the potential for greater losses than if the Fund does not use the derivative instruments that have a leveraging effect. Leverage may result in losses that exceed the amount originally invested and may accelerate the rate of losses. Leverage tends to magnify, sometimes significantly, the effect of any increase or decrease in the Fund's exposure to an asset or class of assets and may cause the Fund's net asset value ("NAV") to be volatile.

Liquidity Risk
The Fund is susceptible to the risk that certain investments held by the Fund, such as structured notes and other derivative instruments, may have limited marketability or be subject to restrictions on sale, and may be difficult or impossible to purchase or sell at favorable times or prices. The Fund could lose money if it is unable to dispose of an investment at a time that is most beneficial to the Fund. The Fund may be required to dispose of investments at unfavorable times or prices to satisfy obligations, which may result in losses or may be costly to the Fund. For example, the Fund may be forced to sell certain investments at unfavorable prices to meet redemption requests or other cash needs. Judgment plays a greater role in pricing illiquid investments than in investments with more active markets.

Market Risk
The Fund is subject to the risk that the securities markets will move down, sometimes rapidly and unpredictably based on overall economic conditions and other factors. The value of a security may decline due to general market conditions which are not specifically related to a particular company, such as real or perceived adverse economic conditions, changes in the general outlook for corporate earnings, changes in interest or currency rates or adverse investment sentiment generally. Changes in the financial condition of a single issuer can impact a market as a whole.

Market Timing Risk
Because the Fund invests in foreign securities, or it has exposure to foreign securities through the derivatives it holds, it is particularly subject to the risk of market timing activities. Frequent trading by Fund shareholders poses risks to other shareholders in the Fund, including (i) the dilution of the Fund's net asset value ("NAV"), (ii) an increase in the Fund's expenses, and (iii) interference with the portfolio manager's ability to execute efficient investment strategies. Because of specific types of securities in which the Fund may invest, it could be subject to the risk of market timing activities by shareholders.

Model Risk
The sub-advisor may use proprietary modeling systems to implement its investment strategies for the Fund. Investments selected using these models may perform differently than expected as a result of the factors used in the models, the weight placed on each factor, changes from the factors' historical trends and technical issues in the construction and implementation of the models. There is no assurance that the models are complete or accurate, or representative of future market cycles, nor will they necessarily be beneficial to the Fund even if they are accurate. These systems may negatively affect Fund performance for various reasons, including human judgment, inaccuracy of historical data and non-quantitative factors (such as market or trading system dysfunctions, investor fear or over-reaction).

Non-Diversification Risk
The Fund is non-diversified, which means the Fund may focus its investments in the securities of a comparatively small number of issuers. Investments in securities of a limited number of issuers exposes the Fund to greater market risk and potential losses than if assets were diversified among the securities of a greater number of issuers.

Other Investment Companies Risk
The Fund may invest in shares of other registered investment companies, including exchange-traded funds ("ETFs") and money market funds. To the extent that the Fund invests in shares of other registered investment companies, you will indirectly bear fees and expenses charged by those investment companies in addition to the Fund's direct fees and expenses and will be subject to the risks associated with investments in those funds. For example, money market funds are subject to interest rate risk, credit risk, and market risk. To the extent the Fund invests in ETFs that invest in equity securities, fixed income securities and/or foreign securities, or track an index, the Fund is subject to the risks associated with the underlying investments held by the ETF or the index fluctuations to which the ETF is subject. Because ETFs are listed on an exchange, they may be subject to trading halts, may trade at a discount or premium to their NAV and may not be liquid. ETF shares may trade at a premium or discount to their net asset value. An ETF that tracks an index may not precisely replicate the returns of its benchmark index.

Quantitative Strategy Risk
The success of the Fund's investment strategy may depend in part on the effectiveness of the sub-advisor's quantitative tools for screening securities. These strategies may incorporate factors that are not predictive of a security's value. Additionally, a previously successful strategy may become outdated or inaccurate, possibly resulting in losses.

Redemption Risk
Due to a rise in interest rates or other changing government policies that may cause investors to move out of fixed income securities on a large scale, the Fund may experience periods of high levels of redemptions that could cause the Fund to sell assets at inopportune times or at a loss or depressed value. The sale of assets to meet redemption requests may create net capital gains, which could cause the Fund to have to distribute substantial capital gains. Redemption risk is heightened during periods of declining or illiquid markets.

Sector Risk
When the Fund focuses its investments in certain sectors of the economy, its performance may be driven largely by sector performance and could fluctuate more widely than if the Fund were invested more evenly across sectors.

Securities Selection Risk
Securities selected by the sub-advisor or the Manager for the Fund may not perform to expectations. It may not be possible to predict or to hedge against a widening in the yield of the securities selected by the sub-advisor. This could result in the Fund's underperformance compared to other funds with similar investment objectives.

Segregated Assets Risk
In connection with certain transactions that may give rise to future payment obligations, including the purchase and sale of futures contracts, the Fund may be required to maintain a segregated amount of, or otherwise earmark, cash or liquid securities to cover the obligation. Segregated assets cannot be sold while the position they are covering is outstanding, unless they are replaced with other assets of equal value. The need to maintain cash or other liquid securities in segregated accounts could limit the Fund's ability to pursue other opportunities as they arise.

Short Position Risk
The Fund will incur a loss as a result of a short position if the price of the instrument sold short increases in value between the date of the short sale and the date on which an offsetting position is purchased. Short positions may be considered speculative transactions and involve special risks, including greater reliance on the sub-advisor's ability to accurately anticipate the future value of a security or instrument. The Fund's losses are potentially unlimited in a short position transaction because there is potentially no limit on the amount that the security that the Fund is required to purchase may have appreciated.

Sovereign and Quasi Sovereign Debt Risk
Sovereign or quasi-sovereign debt securities are subject to risk of payment delays or defaults due to (1) country cash flow problems, (2) insufficient foreign currency reserves, (3) political considerations, (4) large debt positions relative to the country's economy, (5) policies toward foreign lenders or investors, (6) the failure to implement economic reforms required by the International Monetary Fund or other multilateral agencies, or (7) an inability or unwillingness to repay debts. It may be particularly difficult to enforce the rights of debt holders in frontier and emerging markets. A governmental entity that defaults on an obligation may request additional time in which to pay or further loans or may seek to restructure its obligations to reduce interest rates or outstanding principal. There is no legal process for collecting sovereign and quasi-sovereign debt that a government does not pay nor are there bankruptcy proceedings through which all or part of the sovereign debt that a governmental entity has not repaid may be collected. Sovereign and quasi-sovereign debt risk is increased for emerging and frontier markets issuers, which are among the largest debtors to commercial banks and foreign governments. At times, certain emerging market countries have declared moratoria on the payment of principal and interest on external debt. Certain emerging market countries have experienced difficulty in servicing their sovereign debt on a timely basis, which has led to defaults and the restructuring of certain indebtedness.

STRIPS and Zero Coupon Securities Risk
Separately traded registered interest and principal securities or "STRIPS" and zero coupon securities are securities that do not make periodic interest payments. Accordingly, zero coupon securities usually trade at a deep discount from their face or par value and will be subject to greater fluctuations in market value in response to changing interest rates than debt obligations of comparable maturities that make current distribution of interest in cash.

Supranational Risk
Obligations of supranational entities are subject to the risk that the governments on whose support the entity depends for its financial backing or repayment may be unable or unwilling to provide that support. Obligations of a supranational entity that are denominated in non-U.S. currencies will also be subject to the risks associated with investments in non-U.S. currencies.

Unrated Securities Risk
Because the Fund may purchase securities that are not rated by any rating organization, the sub-advisor, after assessing their credit quality, may internally assign ratings to certain of those securities in categories similar to those of rating organizations. Some unrated securities may not have an active trading market or may be difficult to value, which means the Fund might have difficulty selling them promptly at an acceptable price. Unrated securities may be subject to greater liquidity risk and price volatility.

U.S. Government Securities and Government-Sponsored Enterprises Risk
A security backed by the U.S. Treasury or the full faith and credit of the United States is guaranteed only as to the timely payment of interest and principal when held to maturity. The market prices for such securities are not guaranteed and will fluctuate. Securities held by the Fund that are issued by government-sponsored enterprises, such as the Federal National Mortgage Association (''Fannie Mae''), Federal Home Loan Mortgage Corporation (''Freddie Mac''), Federal Home Loan Bank (''FHLB''), Federal Farm Credit Bank ("FFCB"), and the Tennessee Valley Authority are not guaranteed by the U.S. Treasury and are not backed by the full faith and credit of the U.S. Government and no assurance can be given that the U.S. Government will provide financial support if these organizations do not have the funds to meet future payment obligations. U.S. Government securities and securities of government sponsored entities are also subject to credit risk, interest rate risk and market risk.

Valuation Risk
The Fund may value certain assets at a price different from the price at which they can be sold. This risk may be especially pronounced for investments, such as certain derivatives, which may be illiquid or which may become illiquid.

Variable and Floating Rate Securities Risk
The interest rates payable on variable and floating-rate securities are not fixed and may fluctuate based upon changes in market rates. The interest rate on a floating rate security is a variable rate which is tied to another interest rate, such as a money-market index or Treasury bill rate. Variable and floating rate securities are subject to interest rate risk and credit risk.

As short-term interest rates decline, interest payable on floating-rate securities typically decreases. Alternatively, during periods of rising interest rates, interest payable on floating-rate securities typically increases. Changes in the interest rates of floating-rate securities may lag behind changes in market rates or may have limits on the maximum rate change for a given period of time. The value of floating-rate securities may decline if their interest rates do not rise as much, or as quickly, as interest rates in general. Conversely, floating rate securities will not generally increase in value if interest rates decline.
Risk Nondiversified Status [Text] rr_RiskNondiversifiedStatus Non-Diversification Risk The Fund is non-diversified, which means the Fund may focus its investments in the securities of a comparatively small number of issuers. Investments in securities of a limited number of issuers exposes the Fund to greater market risk and potential losses than if assets were diversified among the securities of a greater number of issuers.
Risk Lose Money [Text] rr_RiskLoseMoney There is no assurance that the Fund will achieve its investment objective and you could lose part or all of your investment in the Fund.
Risk Not Insured Depository Institution [Text] rr_RiskNotInsuredDepositoryInstitution An investment in the Fund is not a deposit with a 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

Fund Performance

Performance Narrative [Text Block] rr_PerformanceNarrativeTextBlock

Performance information for the Fund is not provided because the Fund had not been in operation for a full calendar year as of the date of this Prospectus. Performance for the Fund can be accessed on the Fund's website at www.americanbeaconfunds.com. Past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future.
Performance Past Does Not Indicate Future [Text] rr_PerformancePastDoesNotIndicateFuture Past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future.
Performance Availability Website Address [Text] rr_PerformanceAvailabilityWebSiteAddress www.americanbeaconfunds.com
(American Beacon GLG Total Return Fund℠) | Class A  
Prospectus: rr_ProspectusTable  
Maximum sales charge imposed on purchases (as a percentage of offering price) rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice 4.75%
Maximum deferred sales charge (as a percentage of the lower of original offering price or redemption proceeds) rr_MaximumDeferredSalesChargeOverOther 0.50% [7]
Management Fees rr_ManagementFeesOverAssets 0.95%
Distribution (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets 0.25%
Other Expenses rr_OtherExpensesOverAssets 4.42%
Acquired Fund Fees and Expenses rr_AcquiredFundFeesAndExpensesOverAssets 0.01%
Total Annual Fund Operating Expenses rr_ExpensesOverAssets 5.63% [8]
Fee Waiver and/or expense reimbursement rr_FeeWaiverOrReimbursementOverAssets (4.17%) [9]
Total Annual Fund Operating Expenses after fee waiver and/or expense reimbursement rr_NetExpensesOverAssets 1.46%
Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 $ 617
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 1,720
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 2,810
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 $ 5,475
(American Beacon GLG Total Return Fund℠) | Class C  
Prospectus: rr_ProspectusTable  
Maximum sales charge imposed on purchases (as a percentage of offering price) rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice none
Maximum deferred sales charge (as a percentage of the lower of original offering price or redemption proceeds) rr_MaximumDeferredSalesChargeOverOther 1.00%
Management Fees rr_ManagementFeesOverAssets 0.95%
Distribution (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets 1.00%
Other Expenses rr_OtherExpensesOverAssets 4.42%
Acquired Fund Fees and Expenses rr_AcquiredFundFeesAndExpensesOverAssets 0.01%
Total Annual Fund Operating Expenses rr_ExpensesOverAssets 6.38% [8]
Fee Waiver and/or expense reimbursement rr_FeeWaiverOrReimbursementOverAssets (4.17%) [9]
Total Annual Fund Operating Expenses after fee waiver and/or expense reimbursement rr_NetExpensesOverAssets 2.21%
Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 $ 324
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 1,517
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 2,775
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 5,772
Expense Example, No Redemption, 1 Year rr_ExpenseExampleNoRedemptionYear01 224
Expense Example, No Redemption, 3 Years rr_ExpenseExampleNoRedemptionYear03 1,517
Expense Example, No Redemption, 5 Years rr_ExpenseExampleNoRedemptionYear05 2,775
Expense Example, No Redemption, 10 Years rr_ExpenseExampleNoRedemptionYear10 $ 5,772
(American Beacon GLG Total Return Fund℠) | Class Y  
Prospectus: rr_ProspectusTable  
Maximum sales charge imposed on purchases (as a percentage of offering price) rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice none
Maximum deferred sales charge (as a percentage of the lower of original offering price or redemption proceeds) rr_MaximumDeferredSalesChargeOverOther none
Management Fees rr_ManagementFeesOverAssets 0.95%
Distribution (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets none
Other Expenses rr_OtherExpensesOverAssets 4.36%
Acquired Fund Fees and Expenses rr_AcquiredFundFeesAndExpensesOverAssets 0.01%
Total Annual Fund Operating Expenses rr_ExpensesOverAssets 5.32% [8]
Fee Waiver and/or expense reimbursement rr_FeeWaiverOrReimbursementOverAssets (4.16%) [9]
Total Annual Fund Operating Expenses after fee waiver and/or expense reimbursement rr_NetExpensesOverAssets 1.16%
Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 $ 118
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 1,220
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 2,314
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 $ 5,020
(American Beacon GLG Total Return Fund℠) | Institutional Class  
Prospectus: rr_ProspectusTable  
Maximum sales charge imposed on purchases (as a percentage of offering price) rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice none
Maximum deferred sales charge (as a percentage of the lower of original offering price or redemption proceeds) rr_MaximumDeferredSalesChargeOverOther none
Management Fees rr_ManagementFeesOverAssets 0.95%
Distribution (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets none
Other Expenses rr_OtherExpensesOverAssets 1.14%
Acquired Fund Fees and Expenses rr_AcquiredFundFeesAndExpensesOverAssets 0.01%
Total Annual Fund Operating Expenses rr_ExpensesOverAssets 2.10% [8]
Fee Waiver and/or expense reimbursement rr_FeeWaiverOrReimbursementOverAssets (1.04%) [9]
Total Annual Fund Operating Expenses after fee waiver and/or expense reimbursement rr_NetExpensesOverAssets 1.06%
Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 $ 108
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 557
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 1,032
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 $ 2,347
(American Beacon GLG Total Return Fund℠) | Investor Class  
Prospectus: rr_ProspectusTable  
Maximum sales charge imposed on purchases (as a percentage of offering price) rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice none
Maximum deferred sales charge (as a percentage of the lower of original offering price or redemption proceeds) rr_MaximumDeferredSalesChargeOverOther none
Management Fees rr_ManagementFeesOverAssets 0.95%
Distribution (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets none
Other Expenses rr_OtherExpensesOverAssets 4.19%
Acquired Fund Fees and Expenses rr_AcquiredFundFeesAndExpensesOverAssets 0.01%
Total Annual Fund Operating Expenses rr_ExpensesOverAssets 5.15% [8]
Fee Waiver and/or expense reimbursement rr_FeeWaiverOrReimbursementOverAssets (3.71%) [9]
Total Annual Fund Operating Expenses after fee waiver and/or expense reimbursement rr_NetExpensesOverAssets 1.44%
Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 $ 147
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 1,212
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 2,274
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 $ 4,915
(American Beacon GLG Total Return Fund℠) | Ultra Class  
Prospectus: rr_ProspectusTable  
Maximum sales charge imposed on purchases (as a percentage of offering price) rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice none
Maximum deferred sales charge (as a percentage of the lower of original offering price or redemption proceeds) rr_MaximumDeferredSalesChargeOverOther none
Management Fees rr_ManagementFeesOverAssets 0.95%
Distribution (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets none
Other Expenses rr_OtherExpensesOverAssets 1.14%
Acquired Fund Fees and Expenses rr_AcquiredFundFeesAndExpensesOverAssets 0.01%
Total Annual Fund Operating Expenses rr_ExpensesOverAssets 2.10% [8]
Fee Waiver and/or expense reimbursement rr_FeeWaiverOrReimbursementOverAssets (1.14%) [9]
Total Annual Fund Operating Expenses after fee waiver and/or expense reimbursement rr_NetExpensesOverAssets 0.96%
Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 $ 98
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 548
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 1,024
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 $ 2,341
(American Beacon Global Evolution Frontier Markets Income Fund℠)  
Prospectus: rr_ProspectusTable  
Objective [Heading] rr_ObjectiveHeading

Investment Objective

Objective, Primary [Text Block] rr_ObjectivePrimaryTextBlock

The Fund's investment objective is to seek income with capital appreciation as a secondary objective.
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. You may qualify for sales discounts if you and your eligible family members invest, or agree to invest in the future, at least $50,000 in all classes of the American Beacon Funds on an aggregated basis. More information about these and other discounts is available from your financial professional and in "Choosing Your Share Class" on page 17 of the Prospectus and "Additional Purchase and Sale Information for A Class Shares" on page 36 of the statement of additional information ("SAI"). With respect to purchases of shares through specific intermediaries, you may find additional information regarding sales charge discounts and waivers in Appendix A to the Fund's Prospectus entitled "Intermediary Sales Charge Discounts and Waivers".
Expense Breakpoint Discounts [Text] rr_ExpenseBreakpointDiscounts You may qualify for sales discounts if you and your eligible family members invest, or agree to invest in the future, at least $50,000 in all classes of the American Beacon Funds on an aggregated basis.
Expense Breakpoint, Minimum Investment Required [Amount] rr_ExpenseBreakpointMinimumInvestmentRequiredAmount $ 50,000
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 May 31, 2018
Expenses Deferred Charges [Text Block] rr_ExpensesDeferredChargesTextBlock A contingent deferred sales charge (''CDSC'') of 0.50% will be charged on certain purchases of $1,000,000 or more of A Class shares that are redeemed in whole or part within 18 months of purchase.
Expenses Not Correlated to Ratio Due to Acquired Fund Fees [Text] rr_ExpensesNotCorrelatedToRatioDueToAcquiredFundFees The Total Annual Fund Operating Expenses do not correlate to the ratio of expenses to average net assets provided in the Fund's Financial Highlights table, which reflects the operating expenses of the Fund and does not include Acquired Fund Fees and Expenses.
Expense Example [Heading] rr_ExpenseExampleHeading

Example
Expense Example Narrative [Text Block] rr_ExpenseExampleNarrativeTextBlock

This 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 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 and that the Fund's operating expenses remain the same, except that the Example reflects the fee waiver/expense reimbursement arrangement for the A Class through May 31, 2018. Although your actual costs may be higher or lower, based on these assumptions, your costs would be:
Expense Example, No Redemption, By Year, Caption [Text] rr_ExpenseExampleNoRedemptionByYearCaption

Assuming no redemption of shares:
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 69% of the average value of its portfolio.
Portfolio Turnover, Rate rr_PortfolioTurnoverRate 69.00%
Strategy [Heading] rr_StrategyHeading

Principal Investment Strategies

Strategy Narrative [Text Block] rr_StrategyNarrativeTextBlock

Under normal circumstances, the Fund will invest at least 80% of its net assets (plus the amount of any borrowings for investment purposes) in investments that are economically tied to frontier market countries. Investments economically tied to frontier market countries may include securities, currencies, and derivative investments. The Fund may also make investments that are economically tied to more-developed emerging market countries. The Fund's investments are expected to include primarily frontier and emerging market sovereign and quasi-sovereign debt instruments, such as obligations issued or guaranteed by foreign (non-U.S.) governments, their agencies or instrumentalities and political subdivisions, and investments that provide exposure to sovereign and quasi-sovereign debt instruments, including credit-linked and other types of structured notes (which may use special purpose vehicles ("SPVs")), swaps, options, futures, and forward contracts, warrants, callable securities, municipal securities, inflation index linked securities, restricted securities, and variable and floating-rate securities.

An investment is generally regarded as being economically tied to a frontier market country if:

  • it is traded in a frontier market country;

  • the issuer is a government agency or guaranteed by a sovereign government agency, including a regional or municipal government within the country, or quasi-governmental agency of a frontier market country;

  • the issuer is organized under the laws of, or that maintains its principal place of business in, a frontier market country;

  • the issuer derives at least 50% of its revenues from, or has at least 50% of its assets in, a frontier market country;

  • the value is linked to one of the above categories; or

  • it is a derivative instrument whose value is linked to one of the above categories.

Frontier market countries are represented by countries typically characterized by developing financial markets as well as developing economies and political systems. A frontier market country is one that is typically located in the Asia-Pacific region, Central or Eastern Europe, the Middle East, Central or South America, Caribbean, or Africa. Frontier market countries generally include all countries except the developed and emerging market countries that are constituents of the MSCI All Country World Index.

The countries that comprise frontier markets change from time to time. The Fund's investment sub-advisor, Global Evolution USA, LLC ("Global Evolution"), may invest in any countries that it reasonably determines to be classified as frontier market countries. In making investment decisions for the Fund, Global Evolution employs a top-down investment process that focuses on macroeconomic and political risk, as well as country risk. Global Evolution qualitatively and quantitatively considers environmental, social, and governance ("ESG") indicators as an integrated part of the research and the investment processes. Global Evolution's investment process includes monitoring of investment guidelines, individual trades and investment strategies and general portfolio risk monitoring.

The Fund's investments in derivatives may include structured products, including credit-linked and structured notes, options, futures contracts, including interest rate and Treasury futures contracts, forward contracts (including non-deliverable forwards ("NDFs")), swaps, and similar instruments. The types of swaps that the Fund may enter into include credit default swaps, interest rate swaps, total return swaps, cross-currency swaps, and similar instruments. The Fund uses derivative instruments to enhance total return, to hedge against fluctuations in securities prices, interest rates or currency exchange rates, to change the effective duration of its portfolio, to manage certain investment risks or as a substitute for the purchase or sale of the underlying currencies or securities. Derivative instruments allow the Funds to obtain economic exposure to a frontier or emerging market country without directly holding its securities. For example, derivatives may be used where regulatory or other restrictions make it difficult or undesirable for the Fund to invest directly in a frontier or emerging market investment. Subject to applicable regulatory restrictions, there is no limit on the amount of the Fund exposure to a single counterparty.

The Fund also may have significant exposure to foreign currencies for investment or hedging purposes by purchasing or selling forward currency exchange contracts in non-U.S. currencies, non-U.S. currency futures contracts, options on non-U.S. currencies and non-U.S. currency futures and swaps for cross-currency investments. The Fund may also make direct investments in non-U.S. currencies and in securities denominated in non-U.S. currencies. Investments in currencies, currency derivatives, and currency hedging are established to extract value or reduce risk.

The Fund does not have specific requirements for investment yield, duration, maturity, market capitalization, or minimum credit quality rating, and may invest without limitation in securities, and trade with counterparties, which are rated below investment grade (commonly known as "high-yield debt securities" or "junk bonds") (rated BB or lower by S&P Global Rating or Fitch, Inc. and/or Ba or lower by Moody's Investors Service, Inc.) or the unrated equivalent. The Fund may achieve capital appreciation when a stronger macro-economic and political situation for frontier market countries leads to lower yields, lower credit spreads and potentially stronger currencies.

The Fund may also invest cash balances in other investment companies, including money market funds.

The Fund is non-diversified, which means that it is not limited to a percentage of assets that it may invest in any one issuer.
Risk [Heading] rr_RiskHeading

Principal Risks

Risk Narrative [Text Block] rr_RiskNarrativeTextBlock

There is no assurance that the Fund will achieve its investment objective and you could lose part or all of your investment in the Fund. The Fund is designed primarily for investors seeking income and, to a lesser degree, capital appreciation from a fund that typically invests in fixed income, currency, and derivative instruments economically tied to frontier markets. Those investors should be willing to assume the counterparty, credit, currency, derivative, investment, market, sovereign debt, and other risks associated with investing in less developed markets. The Fund is not designed for investors who need an assured level of current income and is intended to be a long-term investment. The Fund is not a complete investment program and may not be appropriate for all investors. Investors should carefully consider their own investment goals and risk tolerance before investing in the Fund. The principal risks of investing in the Fund are:

Allocation Risk
The sub-advisor's judgments about, and allocations among, asset classes and market exposures may adversely affect the Fund's performance. This risk may be increased by the use of derivatives to increase allocations to various market exposures.

Callable Securities Risk
The Fund may invest in fixed-income securities with call features. A call feature allows the issuer of the security to redeem or call the security prior to its stated maturity date. In periods of falling interest rates, issuers may be more likely to call in securities that are paying higher coupon rates than prevailing interest rates. In the event of a call, the Fund would lose the income that would have been earned to maturity on that security, and the proceeds received by the Fund may be invested in securities paying lower coupon rates and may not benefit from any increase in value that might otherwise result from declining interest rates.

Counterparty Risk
The Fund is subject to the risk that a party or participant to a transaction, such as a broker or derivative counterparty, will be unwilling or unable to satisfy its obligation to make timely principal, interest or settlement payments or to otherwise honor its obligations to the Fund.

Credit Risk
The Fund is subject to the risk that the issuer or guarantor of a debt security, or the counterparty to a derivatives contract or a loan will fail to make timely payment of interest or principal or otherwise honor its obligations or default completely. Credit risk is typically greater for securities with ratings that are below investment grade (commonly referred to as "junk bonds"). Since the Fund can invest significantly in lower-quality debt securities considered speculative in nature, this risk will be substantial. A downgrade or default affecting any of the Fund's securities could affect the Fund's performance.

Currency Risk
The Fund may have exposure to foreign currencies by making direct investments in non-U.S. currencies or in securities denominated in non-U.S. currencies, purchasing or selling forward currency exchange contracts in non-U.S. currencies, including both non-deliverable forwards ("NDFs") and deliverable forwards, non-U.S. currency futures contracts, options (including non-deliverable options ("NDOs") on non-U.S. currencies and non-U.S. currency futures) and swaps for cross-currency transaction. Foreign currencies will fluctuate, and may decline, in value relative to the U.S. dollar and other currencies and thereby affect the Fund's investments in foreign (non-U.S.) currencies or in securities that trade in, and receive revenues in, or in derivatives that provide exposure to, foreign (non-U.S.) currencies.

Cybersecurity and Operational Risk
The Fund and its service providers, and shareholders' ability to transact with the Fund, may be negatively impacted due to operational risks arising from, among other problems, human errors, systems and technology disruptions or failures, or cybersecurity incidents. It is not possible for the Fund service providers to identify all of the operational risks that may affect the Fund or to develop processes and controls to completely eliminate or mitigate their occurrence or effects. Cybersecurity incidents could also affect issuers of securities in which the Fund invests, leading to significant loss of value.

Derivatives Risk
Derivatives may involve significant risk. The use of derivative instruments may expose the Fund to additional risks that it would not be subject to if it invested directly in the securities or other instruments underlying those derivatives, including the high degree of leverage often embedded in such instruments, and potential material and prolonged deviations between the theoretical value and realizable value of a derivative. Some derivatives have the potential for unlimited loss, regardless of the size of the Fund's initial investment. Derivatives may be illiquid and may be more volatile than other types of investments. The Fund may buy or sell derivatives not traded on an exchange and which may be subject to heightened liquidity and valuation risk. There may not be a liquid secondary market for the derivative instruments traded by the Fund. Derivative investments can increase portfolio turnover and transaction costs. Derivatives also are subject to counterparty risk. As a result, the Fund may obtain no recovery of its investment or may only obtain a limited recovery, and any recovery may be delayed. Not all derivative transactions require a counterparty to post collateral, which may expose the Fund to greater losses in the event of a default by a counterparty. In addition, the Fund's investments in derivatives are subject to the following risks:

  • Credit-Linked Notes. Credit-linked notes ("CLNs") are debt obligations that are structured so that their performance is linked to that of an underlying bond or other debt obligation (a "reference asset"), normally by means of an embedded or underlying credit default swap. They may be highly volatile and are subject to the credit risk of both the issuer of the CLN and the issuer of the reference assets. They also are subject to currency risk, liquidity risk, valuation risk, the other risks of a credit default swap, and potential conflicts of interest with the CLN issuer or sponsor.

  • Futures and Forward Contracts. Futures and forward contracts, including non-deliverable forwards ("NDFs"), are derivative instruments pursuant to a contract where one party pays a fixed price for an agreed amount of securities or other underlying assets at an agreed date or to buy or sell a specific currency at a future date at a price set at the time of the contract. There may be an imperfect correlation between the movement in the prices of futures contracts and the value of the underlying instruments or indexes. There can be no assurance that any strategy used will succeed. Not all forward contracts, including NDFs, require a counterparty to post collateral, which may expose the Fund to greater losses in the event of a default by a counterparty. There may not be a liquid secondary market for the futures contracts. Forward currency transactions, including NDFs, and forward currency contracts include the risks associated with fluctuations in currency. Interest rate and Treasury futures contracts expose the Fund to price fluctuations resulting from changes in interest rates. The Fund could suffer a loss if interest rates rise after the Fund has purchased an interest rate futures contract or fall after the Fund has sold an interest rate futures contract. Similarly, Treasury futures contracts expose the Fund to potential losses if interest rates do not move as expected.

  • Hedging. If the Fund uses a hedging instrument at the wrong time or judges the market conditions incorrectly, or the hedged instrument does not correlate to the risk sought to be hedged, the hedge might be unsuccessful, reduce the Fund's return, or create a loss.

  • Options. In order for a call option to be profitable, the market price of the underlying security must rise sufficiently above the call option exercise price to cover the premium and transaction costs. These costs will reduce any profit that might otherwise have been realized had the Fund bought the underlying security instead of the call option. For a put option to be profitable, the market price of the underlying security must decline sufficiently below the put option's exercise price to cover the premium and transaction costs. By using put options in this manner, the Fund will reduce any profit it might otherwise have realized from having shorted the declining underlying security by the premium paid for the put option and by transaction costs. If the Fund sells a put option, there is a risk that the Fund may be required to buy the underlying asset at a disadvantageous price. If the Fund sells a call option, there is a risk that the Fund may be required to sell the underlying asset at a disadvantageous price. If the Fund sells a call option on an underlying asset that the Fund owns and the underlying asset has increased in value when the call option is exercised, the Fund will be required to sell the underlying asset at the call price and will not be able to realize any of the underlying asset's value above the call price.

  • Structured Notes. Structured notes are subject to interest rate risk and credit risk. The price of structured notes may be very volatile and they may have a limited trading market, making it difficult to value them or sell them at an acceptable price.

  • Swap Agreements. Swaps can involve greater risks than a direct investment in an underlying asset, because swaps typically include a certain amount of embedded leverage and as such are subject to leveraging risk. If swaps are used as a hedging strategy, the Fund is subject to the risk that the hedging strategy may not eliminate the risk that it is intended to offset, due to, among other reasons, the occurrence of unexpected price movements or the non-occurrence of expected price movements. Swaps also may be difficult to value. Interest rate swaps, total return swaps, currency swaps and credit default swaps are subject to counterparty risk, credit risk and liquidity risk. In addition, interest rate swaps are subject to interest rate risk, total return swaps are subject to market risk, and interest rate risk if the underlying securities are bonds or other debt obligations and currency swaps are subject to currency risk, and credit default swaps are subject to the risks associated with the purchase and sale of credit protection.

  • Warrants, Including Sovereign Warrants. Warrants may be more speculative than certain other types of investments because warrants do not carry with them dividend or voting rights with respect to the underlying securities, or any rights in the assets of the issuer. In addition, the value of a warrant does not necessarily change with the value of the underlying securities, and a warrant ceases to have value if it is not exercised prior to its expiration date. The Fund may invest in warrants that represent the right to receive payments if an identified revenue, commodity price or economic measure within a frontier or emerging market country, such as the price or volume of domestically produced oil or the growth of the country's gross domestic product, equals or exceeds a specified level. Such warrants may result from the restructuring of a sovereign debt obligation and may be more speculative than certain other types of sovereign investments. The market for warrants may be very limited and there may at times not be a liquid secondary market for warrants.

Emerging Markets Risk
When investing in emerging markets, the risks of investing in foreign securities discussed below are heightened. Emerging markets are generally smaller, less developed, less liquid and more volatile than the securities markets of the U.S. and other developed markets. There are also risks of: greater political uncertainties; an economy's dependence on revenues from particular commodities or on international aid or development assistance; currency transfer restrictions; a limited number of potential buyers for such securities resulting in increased volatility and limited liquidity for emerging market securities; trading suspensions; and delays and disruptions in securities settlement procedures.

Foreign Investing Risk
Non-U.S. investments carry potential risks not associated with U.S. investments. Such risks include, but are not limited to: (1) currency exchange rate fluctuations, (2) political and financial instability, (3) less liquidity, (4) lack of uniform accounting, auditing and financial reporting standards, (5) increased price volatility, (6) less government regulation and supervision of foreign stock exchanges, brokers and listed companies; and (7) delays in transaction settlement in some foreign markets.

Frontier Markets Risk
Frontier market countries generally have smaller economies and less developed capital markets or legal, regulatory and political systems than traditional emerging market countries. As a result, the risks of investing in emerging market countries are magnified in frontier market countries.

Hedging Risk
The Fund will employ various hedging strategies. There are a variety of factors that may cause hedges to fail to mitigate risks in the manner expected, such as if an instrument used to hedge fails to demonstrate the expected correlation to the risk being hedged, the Fund uses a hedging instrument at the wrong time, or judges the market conditions incorrectly. In addition, hedges, even when successful in mitigating risk, may not prevent the Fund from experiencing losses on its investments, and therefore the use of hedging strategies may reduce the Fund's return, or create a loss.

Illiquid and Restricted Securities Risk
Securities not registered in the U.S. under the Securities Act of 1933, as amended (the "Securities Act"), including Rule 144A securities, are restricted as to their resale. Such securities may not be listed on an exchange and may have no active trading market. They may be more difficult to purchase or sell at an advantageous time or price because such securities may not be readily marketable in broad public markets, or may have to be held for a certain time period before they can be resold. The Fund may not be able to sell a restricted security when the sub-advisor considers it desirable to do so and/or may have to sell the security at a lower price than the Fund believes is its fair market value. In addition, transaction costs may be higher for restricted securities and the Fund may receive only limited information regarding the issuer of a restricted security. The Fund may have to bear the expense of registering restricted securities for resale and the risk of substantial delays in effecting the registration.

Inflation Index Linked Securities Risk
Unlike a conventional bond, whose issuer makes regular fixed interest payments and repays the face value of the bond at maturity, an inflation index linked security provides interest payments that vary as the principal and/or interest, are adjusted over time to reflect a rise (inflation) or a drop (deflation) in the reference index. Repayment of the original principal upon maturity (as adjusted for inflation) is guaranteed in the case of U.S. Treasury inflation-indexed debt securities. For inflation-linked securities that do not provide a similar guarantee, the adjusted principal value of the securities repaid at maturity may be less than the original principal value. The value of inflation-linked securities is expected to change in response to real interest rates. The price of an inflation-linked security generally falls when real interest rates rise and rises when real interest rates fall.

Interest Rate Risk
The Fund is subject to the risk that the market value of fixed income securities or derivatives it holds will decline due to rising interest rates. Generally, the value of investments with interest rate risk, such as fixed income securities, will move in the opposite direction to movements in interest rates. The Federal Reserve raised the federal funds rate in December 2016 and March 2017 and has signaled additional increases in 2017. Interest rates may rise, perhaps significantly and/or rapidly, potentially resulting in substantial losses to the Fund. The prices of fixed income securities or derivatives are also affected by their durations. Fixed income securities or derivatives with longer duration generally have greater sensitivity to changes in interest rates. For example, if a bond has a duration of four years, a 1% increase in interest rates could be expected to result in a 4% decrease in the value of the bond. Significant upward pressure on domestic interest rates and a corresponding widening of credit spreads could negatively impact the market price of emerging debt investments. An increase in interest rates can impact markets broadly as well. Some investors buy securities and derivatives with borrowed money; an increase in interest rates can cause a decline in those markets.

Investment Risk
An investment in the Fund is not a deposit with a bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency. When you sell your shares of the Fund, they could be worth less than what you paid for them. Therefore, you may lose money by investing in the Fund.

Issuer Risk
The value of, and/or the return generated by, a security may decline for a number of reasons which directly relate to the issuer, such as management performance, financial leverage and reduced demand for the issuer's goods or services, as well as the historical and prospective earnings of the issuer and the value of its assets.

Leverage Risk
The Fund's use of futures, forward contracts, swaps or other derivative instruments will have the economic effect of financial leverage. Financial leverage magnifies the exposure to the swings in prices of an asset or class of assets underlying a derivative instrument and results in increased volatility, which means that the Fund will have the potential for greater losses than if the Fund does not use the derivative instruments that have a leveraging effect. Leverage may result in losses that exceed the amount originally invested and may accelerate the rates of losses. Leverage tends to magnify, sometimes significantly, the effect of any increase or decrease in the Fund's exposure to an asset or class of assets and may cause the Fund's net asset value ("NAV") to be volatile.

Liquidity Risk
The Fund is susceptible to the risk that certain investments held by the Fund, such as structured notes and other derivative instruments, may have limited marketability or be subject to restrictions on sale, and may be difficult or impossible to purchase or sell at favorable times or prices. The Fund could lose money if it is unable to dispose of an investment at a time that is most beneficial to the Fund. The Fund may be required to dispose of investments at unfavorable times or prices to satisfy obligations, which may result in losses or may be costly to the Fund. For example, the Fund may be forced to sell certain investments at unfavorable prices to meet redemption requests or other cash needs. Judgment plays a greater role in pricing illiquid investments than in investments with more active markets.

Market Risk
The Fund is subject to the risk that the securities markets will move down, sometimes rapidly and unpredictably based on overall economic conditions and other factors. The value of a security may decline due to general market conditions which are not specifically related to a particular company, such as real or perceived adverse economic conditions, changes in the general outlook for corporate earnings, changes in interest or currency rates or adverse investment sentiment generally. Changes in the financial condition of a single issuer can impact a market as a whole.

Market Timing Risk
Because the Fund invests in foreign securities, or it has exposure to foreign securities through the derivatives it holds, it is particularly subject to the risk of market timing activities. Frequent trading by Fund shareholders poses risks to other shareholders in the Fund, including (i) the dilution of the Fund's net asset value ("NAV"), (ii) an increase in the Fund's expenses, and (iii) interference with the portfolio manager's ability to execute efficient investment strategies. Because of specific types of securities in which the Fund may invest, it could be subject to the risk of market timing activities by shareholders.

Municipal Securities Risk
Municipal securities could be adversely affected by adverse political and legislative changes. Changes in the financial condition of a municipality may affect the ability of a municipal issuer to make interest and principal payments on a security as they become due. Changes in interest rates and market conditions may directly impact the liquidity and valuation of municipal securities, which may affect the yield and value of the Fund's municipal securities investments. A downgrade in the issuer's or security's credit rating can reduce the market value of the security.

Non-Diversification Risk
The Fund is non-diversified, which means the Fund may focus its investments in the securities of a comparatively small number of issuers. Investments in securities of a limited number of issuers exposes the Fund to greater market risk and potential losses than if assets were diversified among the securities of a greater number of issuers.

Other Investment Companies Risk
The Fund may invest in shares of other registered investment companies, including money market funds. To the extent that the Fund invests in shares of other registered investment companies, the Fund will indirectly bear the fees and expenses charged by those investment companies in addition to the Fund's direct fees and expenses and will be subject to the risks associated with investments in those funds. For example, money market funds are subject to interest rate risk, credit risk, and market risk.

Securities Selection Risk
Securities selected by the sub-advisor or the Manager for the Fund may not perform to expectations. This could result in the Fund's underperformance compared to other funds with similar investment objectives.

Segregated Assets Risk
In connection with certain transactions that may give rise to future payment obligations, including investments in derivatives, the Fund may be required to maintain a segregated amount of, or otherwise earmark, cash or liquid securities to cover the position or transaction, which cannot be sold while the position they are covering is outstanding, unless they are replaced with other assets of equal value. The need to maintain cash or other liquid securities in segregated accounts could limit the Fund's ability to pursue other opportunities as they arise.

Sovereign and Quasi Sovereign Debt Risk
The Fund normally will have significant investments in sovereign and quasi-sovereign debt securities. These investments are subject to risk of payment delays or defaults due to (1) country cash flow problems, (2) insufficient foreign currency reserves, (3) political considerations, (4) large debt positions relative to the country's economy, (5) policies toward foreign lenders or investors, (6) the failure to implement economic reforms required by the International Monetary Fund or other multilateral agencies, or (7) an inability or unwillingness to repay debts. It may be particularly difficult to enforce the rights of debt holders in frontier and emerging markets. A governmental entity that defaults on an obligation may request additional time in which to pay or further loans or may seek to restructure its obligations to reduce interest rates or outstanding principal. There is no legal process for collecting sovereign and quasi-sovereign debt that a government does not pay nor are there bankruptcy proceedings through which all or part of the sovereign debt that a governmental entity has not repaid may be collected. Sovereign and quasi-sovereign debt risk is increased for emerging and frontier markets issuers, which are among the largest debtors to commercial banks and foreign governments. At times, certain emerging market countries have declared moratoria on the payment of principal and interest on external debt. Certain emerging market countries have experienced difficulty in servicing their sovereign debt on a timely basis, which has led to defaults and the restructuring of certain indebtedness.

Supranational Risk
Obligations of supranational entities are subject to the risk that the governments on whose support the entity depends for its financial backing or repayment may be unable or unwilling to provide that support. Obligations of a supranational entity that are denominated in non-U.S. currencies will also be subject to the risks associated with investments in non-U.S. currencies.

Unrated Securities Risk
Investing in unrated securities involves the risk that the sub-advisor may not accurately evaluate the security's comparative credit rating. To the extent that the Fund invests in unrated securities, the Fund's success in achieving its investment objective may depend more heavily on the sub-advisors' credit analysis than if the Fund invested exclusively in rated securities.

U.S. Government Securities and Government-Sponsored Enterprises Risk
A security backed by the U.S. Treasury or the full faith and credit of the United States is guaranteed only as to the timely payment of interest and principal when held to maturity. The market prices for such securities are not guaranteed and will fluctuate. Securities held by the Fund that are issued by government-sponsored enterprises, such as the Federal National Mortgage Association (''Fannie Mae''), Federal Home Loan Mortgage Corporation (''Freddie Mac''), Federal Home Loan Bank (''FHLB''), Federal Farm Credit Bank ("FFCB"), and the Tennessee Valley Authority are not guaranteed by the U.S. Treasury and are not backed by the full faith and credit of the U.S. Government and no assurance can be given that the U.S. Government will provide financial support if these organizations do not have the funds to meet future payment obligations. U.S. Government securities and securities of government sponsored entities are also subject to credit risk, interest rate risk and market risk.

Valuation Risk
The Fund may value certain assets at a price different from the price at which they can be sold. This risk may be especially pronounced for investments, such as certain derivatives, which may be illiquid or which may become illiquid.

Variable and Floating Rate Securities Risk
The interest rates payable on variable and floating-rate securities are not fixed and may fluctuate based upon changes in market rates. The interest rate on a floating rate security is a variable rate which is tied to another interest rate, such as a money-market index or Treasury bill rate. Variable and floating rate securities are subject to interest rate risk and credit risk.

As short-term interest rates decline, interest payable on floating-rate securities typically decreases. Alternatively, during periods of rising interest rates, interest payable on floating-rate securities typically increases. Changes in the interest rates of floating-rate securities may lag behind changes in market rates or may have limits on the maximum rate change for a given period of time. The value of floating-rate securities may decline if their interest rates do not rise as much, or as quickly, as interest rates in general. Conversely, floating rate securities will not generally increase in value if interest rates decline.
Risk Nondiversified Status [Text] rr_RiskNondiversifiedStatus Non-Diversification Risk The Fund is non-diversified, which means the Fund may focus its investments in the securities of a comparatively small number of issuers. Investments in securities of a limited number of issuers exposes the Fund to greater market risk and potential losses than if assets were diversified among the securities of a greater number of issuers.
Risk Lose Money [Text] rr_RiskLoseMoney There is no assurance that the Fund will achieve its investment objective and you could lose part or all of your investment in the Fund.
Risk Not Insured Depository Institution [Text] rr_RiskNotInsuredDepositoryInstitution An investment in the Fund is not a deposit with a 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

Fund Performance

Performance Narrative [Text Block] rr_PerformanceNarrativeTextBlock

The bar chart and table below provide an indication of risk by showing changes in the Fund's performance over time. The bar chart shows how the Fund's performance has varied from year to year. The table shows how the Fund's average annual total returns compare to a broad-based market index for the periods indicated. You may obtain updated performance information on the Fund's website at www.americanbeaconfunds.com. 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

Calendar year total returns for Investor Class Shares. Year Ended 12/31
Bar Chart Closing [Text Block] rr_BarChartClosingTextBlock

Highest Quarterly Return:
6.03% 3rd Quarter 2016
1/01/2015 through 12/31/2016

Lowest Quarterly Return:
-5.19% 3rd Quarter 2015
1/01/2015 through 12/31/2016

The calendar year-to-date total return as of 3/31/2017 was 5.04%.
Performance Table Heading rr_PerformanceTableHeading

Average annual total returns for periods ended December 31, 2016.
Performance Table Closing [Text Block] rr_PerformanceTableClosingTextBlock

After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local income taxes. Actual after-tax returns depend on an investor's tax situation and may differ from those shown. The return after taxes on distributions and sale of Fund shares may exceed the return before taxes due to an assumed tax benefit from any losses on a sale of Fund shares at the end of the measurement period. If you hold your Fund shares through a tax-deferred arrangement, such as an individual retirement account or a 401(k) plan, the after-tax returns do not apply to your situation. After-tax returns are shown only for Investor Class shares; after-tax returns for other share classes will vary.
Performance Table Uses Highest Federal Rate rr_PerformanceTableUsesHighestFederalRate After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local income taxes.
Performance Table Not Relevant to Tax Deferred rr_PerformanceTableNotRelevantToTaxDeferred If you hold your Fund shares through a tax-deferred arrangement, such as an individual retirement account or a 401(k) plan, the after-tax returns do not apply to your situation.
Performance Table Explanation after Tax Higher rr_PerformanceTableExplanationAfterTaxHigher The return after taxes on distributions and sale of Fund shares may exceed the return before taxes due to an assumed tax benefit from any losses on a sale of Fund shares at the end of the measurement period.
Performance Past Does Not Indicate Future [Text] rr_PerformancePastDoesNotIndicateFuture 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 an indication of risk by showing changes in the Fund's performance over time. The bar chart shows how the Fund's performance has varied from year to year. The table shows how the Fund's average annual total returns compare to a broad-based market index for the periods indicated.
Performance Table One Class of after Tax Shown [Text] rr_PerformanceTableOneClassOfAfterTaxShown After-tax returns are shown only for Investor Class shares; after-tax returns for other share classes will vary.
Performance Availability Website Address [Text] rr_PerformanceAvailabilityWebSiteAddress www.americanbeaconfunds.com
(American Beacon Global Evolution Frontier Markets Income Fund℠) | JPMorgan EMBI Global Diversified Index (Reflects no deduction for fees expenses or taxes)  
Prospectus: rr_ProspectusTable  
1 Year rr_AverageAnnualReturnYear01 10.15%
Since Inception rr_AverageAnnualReturnSinceInception 5.95%
(American Beacon Global Evolution Frontier Markets Income Fund℠) | Class A  
Prospectus: rr_ProspectusTable  
Maximum sales charge imposed on purchases (as a percentage of offering price) rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice 4.75%
Maximum deferred sales charge (as a percentage of the lower of original offering price or redemption proceeds) rr_MaximumDeferredSalesChargeOverOther 0.50% [10]
Redemption fee (as a percentage of amount redeemed; applies to the proceeds of shares redeemed within 90 days of purchase) rr_RedemptionFeeOverRedemption 2.00%
Management Fees rr_ManagementFeesOverAssets 0.85%
Distribution (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets 0.25%
Other Expenses rr_OtherExpensesOverAssets 0.68%
Acquired Fund Fees and Expenses rr_AcquiredFundFeesAndExpensesOverAssets 0.01%
Total Annual Fund Operating Expenses rr_ExpensesOverAssets 1.79% [11]
Fee Waiver and/or expense reimbursement rr_FeeWaiverOrReimbursementOverAssets (0.23%) [12]
Total Annual Fund Operating Expenses after fee waiver and/or expense reimbursement rr_NetExpensesOverAssets 1.56%
Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 $ 626
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 990
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 1,378
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 $ 2,463
1 Year rr_AverageAnnualReturnYear01 10.33%
Since Inception rr_AverageAnnualReturnSinceInception 3.02%
Inception Date of Class rr_AverageAnnualReturnInceptionDate Feb. 25, 2014
(American Beacon Global Evolution Frontier Markets Income Fund℠) | Class C  
Prospectus: rr_ProspectusTable  
Maximum sales charge imposed on purchases (as a percentage of offering price) rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice none
Maximum deferred sales charge (as a percentage of the lower of original offering price or redemption proceeds) rr_MaximumDeferredSalesChargeOverOther 1.00%
Redemption fee (as a percentage of amount redeemed; applies to the proceeds of shares redeemed within 90 days of purchase) rr_RedemptionFeeOverRedemption 2.00%
Management Fees rr_ManagementFeesOverAssets 0.85%
Distribution (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets 1.00%
Other Expenses rr_OtherExpensesOverAssets 0.70%
Acquired Fund Fees and Expenses rr_AcquiredFundFeesAndExpensesOverAssets 0.01%
Total Annual Fund Operating Expenses rr_ExpensesOverAssets 2.56% [11]
Fee Waiver and/or expense reimbursement rr_FeeWaiverOrReimbursementOverAssets (0.25%) [12]
Total Annual Fund Operating Expenses after fee waiver and/or expense reimbursement rr_NetExpensesOverAssets 2.31%
Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 $ 334
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 773
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 1,338
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 2,877
Expense Example, No Redemption, 1 Year rr_ExpenseExampleNoRedemptionYear01 234
Expense Example, No Redemption, 3 Years rr_ExpenseExampleNoRedemptionYear03 773
Expense Example, No Redemption, 5 Years rr_ExpenseExampleNoRedemptionYear05 1,338
Expense Example, No Redemption, 10 Years rr_ExpenseExampleNoRedemptionYear10 $ 2,877
1 Year rr_AverageAnnualReturnYear01 9.78%
Since Inception rr_AverageAnnualReturnSinceInception 2.25%
Inception Date of Class rr_AverageAnnualReturnInceptionDate Feb. 25, 2014
(American Beacon Global Evolution Frontier Markets Income Fund℠) | Class Y  
Prospectus: rr_ProspectusTable  
Maximum sales charge imposed on purchases (as a percentage of offering price) rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice none
Maximum deferred sales charge (as a percentage of the lower of original offering price or redemption proceeds) rr_MaximumDeferredSalesChargeOverOther none
Redemption fee (as a percentage of amount redeemed; applies to the proceeds of shares redeemed within 90 days of purchase) rr_RedemptionFeeOverRedemption 2.00%
Management Fees rr_ManagementFeesOverAssets 0.85%
Distribution (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets none
Other Expenses rr_OtherExpensesOverAssets 0.63%
Acquired Fund Fees and Expenses rr_AcquiredFundFeesAndExpensesOverAssets 0.01%
Total Annual Fund Operating Expenses rr_ExpensesOverAssets 1.49% [11]
Fee Waiver and/or expense reimbursement rr_FeeWaiverOrReimbursementOverAssets (0.23%) [12]
Total Annual Fund Operating Expenses after fee waiver and/or expense reimbursement rr_NetExpensesOverAssets 1.26%
Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 $ 128
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 448
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 791
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 $ 1,759
1 Year rr_AverageAnnualReturnYear01 10.52%
Since Inception rr_AverageAnnualReturnSinceInception 3.34%
Inception Date of Class rr_AverageAnnualReturnInceptionDate Feb. 25, 2014
(American Beacon Global Evolution Frontier Markets Income Fund℠) | Institutional Class  
Prospectus: rr_ProspectusTable  
Maximum sales charge imposed on purchases (as a percentage of offering price) rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice none
Maximum deferred sales charge (as a percentage of the lower of original offering price or redemption proceeds) rr_MaximumDeferredSalesChargeOverOther none
Redemption fee (as a percentage of amount redeemed; applies to the proceeds of shares redeemed within 90 days of purchase) rr_RedemptionFeeOverRedemption 2.00%
Management Fees rr_ManagementFeesOverAssets 0.85%
Distribution (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets none
Other Expenses rr_OtherExpensesOverAssets 0.55%
Acquired Fund Fees and Expenses rr_AcquiredFundFeesAndExpensesOverAssets 0.01%
Total Annual Fund Operating Expenses rr_ExpensesOverAssets 1.41% [11]
Fee Waiver and/or expense reimbursement rr_FeeWaiverOrReimbursementOverAssets (0.25%) [12]
Total Annual Fund Operating Expenses after fee waiver and/or expense reimbursement rr_NetExpensesOverAssets 1.16%
Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 $ 118
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 422
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 747
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 $ 1,670
1 Year rr_AverageAnnualReturnYear01 10.77%
Since Inception rr_AverageAnnualReturnSinceInception 3.41%
Inception Date of Class rr_AverageAnnualReturnInceptionDate Feb. 25, 2014
(American Beacon Global Evolution Frontier Markets Income Fund℠) | Investor Class  
Prospectus: rr_ProspectusTable  
Maximum sales charge imposed on purchases (as a percentage of offering price) rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice none
Maximum deferred sales charge (as a percentage of the lower of original offering price or redemption proceeds) rr_MaximumDeferredSalesChargeOverOther none
Redemption fee (as a percentage of amount redeemed; applies to the proceeds of shares redeemed within 90 days of purchase) rr_RedemptionFeeOverRedemption 2.00%
Management Fees rr_ManagementFeesOverAssets 0.85%
Distribution (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets none
Other Expenses rr_OtherExpensesOverAssets 0.87%
Acquired Fund Fees and Expenses rr_AcquiredFundFeesAndExpensesOverAssets 0.01%
Total Annual Fund Operating Expenses rr_ExpensesOverAssets 1.73% [11]
Fee Waiver and/or expense reimbursement rr_FeeWaiverOrReimbursementOverAssets (0.19%) [12]
Total Annual Fund Operating Expenses after fee waiver and/or expense reimbursement rr_NetExpensesOverAssets 1.54%
Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 $ 157
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 527
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 921
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 $ 2,026
Annual Return 2015 rr_AnnualReturn2015 (3.82%)
Annual Return 2016 rr_AnnualReturn2016 10.39%
Year to Date Return, Label rr_YearToDateReturnLabel The calendar year-to-date total return as of 3/31/2017 was 5.04%.
Bar Chart, Year to Date Return rr_BarChartYearToDateReturn 5.04%
Bar Chart, Year to Date Return, Date rr_BarChartYearToDateReturnDate Mar. 31, 2017
Highest Quarterly Return, Label rr_HighestQuarterlyReturnLabel Highest Quarterly Return: 6.03% 3rd Quarter 2016 1/01/2015 through 12/31/2016
Highest Quarterly Return rr_BarChartHighestQuarterlyReturn 6.03%
Highest Quarterly Return, Date rr_BarChartHighestQuarterlyReturnDate Sep. 30, 2016
Lowest Quarterly Return, Label rr_LowestQuarterlyReturnLabel Lowest Quarterly Return: -5.19% 3rd Quarter 2015 1/01/2015 through 12/31/2016
Lowest Quarterly Return rr_BarChartLowestQuarterlyReturn (5.19%)
Lowest Quarterly Return, Date rr_BarChartLowestQuarterlyReturnDate Sep. 30, 2015
1 Year rr_AverageAnnualReturnYear01 10.39%
Since Inception rr_AverageAnnualReturnSinceInception 3.07%
Inception Date of Class rr_AverageAnnualReturnInceptionDate Feb. 25, 2014
(American Beacon Global Evolution Frontier Markets Income Fund℠) | Investor Class | Returns After Taxes on Distributions  
Prospectus: rr_ProspectusTable  
1 Year rr_AverageAnnualReturnYear01 10.07%
Since Inception rr_AverageAnnualReturnSinceInception 1.07%
Inception Date of Class rr_AverageAnnualReturnInceptionDate Feb. 25, 2014
(American Beacon Global Evolution Frontier Markets Income Fund℠) | Investor Class | Returns After Taxes on Distributions and Sales of Fund Shares  
Prospectus: rr_ProspectusTable  
1 Year rr_AverageAnnualReturnYear01 5.86%
Since Inception rr_AverageAnnualReturnSinceInception 1.41%
Inception Date of Class rr_AverageAnnualReturnInceptionDate Feb. 25, 2014
(American Beacon Grosvenor Long/Short Fund℠)  
Prospectus: rr_ProspectusTable  
Objective [Heading] rr_ObjectiveHeading

Investment Objective

Objective, Primary [Text Block] rr_ObjectivePrimaryTextBlock

The Fund's investment objective is long-term 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. You may qualify for sales discounts if you and your eligible family members invest, or agree to invest in the future, at least $50,000 in all classes of the American Beacon Funds on an aggregated basis. More information about these and other discounts is available from your financial professional and in "Choosing Your Share Class" on page 19 of the Prospectus and "Additional Purchase and Sale Information for A Class Shares" on page 31 of the statement of additional information ("SAI"). With respect to purchases of shares through specific intermediaries, you may find additional information regarding sales charge discounts and waivers in Appendix A to the Fund's Prospectus entitled "Intermediary Sales Charge Discounts and Waivers".
Expense Breakpoint Discounts [Text] rr_ExpenseBreakpointDiscounts You may qualify for sales discounts if you and your eligible family members invest, or agree to invest in the future, at least $50,000 in all classes of the American Beacon Funds on an aggregated basis.
Expense Breakpoint, Minimum Investment Required [Amount] rr_ExpenseBreakpointMinimumInvestmentRequiredAmount $ 50,000
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 May 31, 2018
Expenses Deferred Charges [Text Block] rr_ExpensesDeferredChargesTextBlock A contingent deferred sales charge (''CDSC'') of 0.50% will be charged on certain purchases of $1,000,000 or more of A Class shares that are redeemed in whole or part within 18 months of purchase.
Expenses Not Correlated to Ratio Due to Acquired Fund Fees [Text] rr_ExpensesNotCorrelatedToRatioDueToAcquiredFundFees The Total Annual Fund Operating Expenses do not correlate to the ratio of expenses to average net assets provided in the Fund's Financial Highlights table, which reflects the operating expenses of the Fund and does not include Acquired Fund Fees and Expenses.
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Example
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This 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 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 and that the Fund's operating expenses remain the same, except that the Example reflects the fee waiver/expense reimbursement arrangement for each share class through May 31, 2018. Although your actual costs may be higher or lower, based on these assumptions, your costs would be:
Expense Example, No Redemption, By Year, Caption [Text] rr_ExpenseExampleNoRedemptionByYearCaption

Assuming no redemption of shares:
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Portfolio Turnover

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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 250% of the average value of its portfolio.
Portfolio Turnover, Rate rr_PortfolioTurnoverRate 250.00%
Strategy [Heading] rr_StrategyHeading

Principal Investment Strategies

Strategy Narrative [Text Block] rr_StrategyNarrativeTextBlock

The Fund seeks to achieve long-term capital appreciation by allocating its assets to multiple subadvisors that employ investment strategies focused on taking long and short positions in global securities. The Fund seeks to achieve its objective with reduced volatility as compared to major market indices. The Fund employs a multi-manager management structure. The Manager has engaged Grosvenor Capital Management, L.P., an unaffiliated alternative investment advisory firm, to serve as the Fund's lead Sub-Advisor ("Lead Sub-Advisor"). The Lead Sub-Advisor allocates the Fund's assets among multiple sub-advisors ("Sub-Advisors") that employ non-traditional alternative investment strategies.

The Fund invests predominately in equity securities and equity-related instruments (such as derivatives) traded in U.S., foreign and emerging markets. The Fund primarily invests in common stock, convertible securities, depositary receipts, exchange-traded funds ("ETFs"), currencies, and derivatives, such as options, futures, forwards, swaps, contracts for difference (an arrangement where the return is linked to the price movement of an underlying security or stock market index). The Fund may use derivatives to generate profits, leverage the Fund's portfolio, hedge the Fund's exposure to a particular investment or market-related risk, as well as to manage the volatility of the Fund's return. The Fund may invest in the equity securities and equity-related instruments of companies of any market capitalization, but generally will invest in medium- and large-capitalization companies. The Fund expects to maintain short positions in equity securities and equity-related instruments. The Fund's investments in equity securities may include common stocks trading on U.S. and non-U.S. exchanges, securities convertible into or exchangeable for common stocks trading on U.S. and non-U.S. exchanges, depositary receipts and U.S. dollar-denominated foreign stocks traded on U.S. exchanges. The Fund expects to have a net long bias, which means that the value of the Fund's long portfolio will exceed the value of the Fund's short portfolio, and the Fund will have directional exposure to the equity markets. However, the Sub-Advisors generally will vary the amount of this net exposure as market conditions and opportunities change. The Manager believes that the use of multiple Sub-Advisors provides the Fund with management diversification and will help to mitigate downside risk. In pursuing its investment strategies, the Fund may engage in active and frequent trading.

The Fund may also invest cash balances in other investment companies, including money market funds and exchange-traded funds, and may purchase and sell futures contracts to gain market exposure on cash balances or reduce market exposure in anticipation of liquidity needs.

The Lead Sub-Advisor allocates the Fund's assets principally among Sub-Advisors that employ long/short investment strategies designed to take advantage of perceived investment opportunities or are based on their current market outlook. These strategies include the equity strategies and event driven strategies described below:

Strategies:

Equity Strategies: Equity strategies involve the purchase and/or short sale of equity and equity-linked instruments (e.g., ETFs, equity derivatives, depository receipts) in global markets. The Fund's Sub-Advisors primarily employ "hedged equity" investment strategies. A Sub-Advisor implements a hedged equity investment strategy by establishing long and short positions in equity or equity-linked instruments. Although the Fund's Sub-Advisors generally will establish both long and short positions, certain Sub-Advisors may focus exclusively on establishing long or short positions, but not both. A Sub-Advisor may seek to hedge portfolio exposure by selling securities short or using instruments such as ETFs, equity-linked options, index options and futures. A Sub-Advisor also may seek to manage risk by adopting constraints on leverage, net market exposure, net regional exposure and net sector exposure, as well as position size limits, position stop-loss limits and parameters relating to the number of its positions.

A Sub-Advisor that pursues an equity strategy typically seeks to capitalize on discrepancies between the Sub-Advisor's evaluation of the intrinsic value of an equity security and its assessment of the issuer's prospects, on the one hand, and the market price of such security, on the other hand. Certain Sub-Advisors also may seek to extract value by being more catalyst- or trading-oriented.

A Sub-Advisor that employs an equity strategy may focus on a particular capitalization range (e.g., medium or large cap), a particular industry sector (e.g., healthcare, technology, or consumer) geographic region, or may employ a specific investment style (e.g., value vs. growth). A Sub-Advisor also may pursue a broad mandate, without specific regard for an issuer's capitalization, sector or geography. Some Sub-Advisors may employ equity strategies with an activist approach. Activist investing relies on a Sub-Advisor's ability to use a significant economic stake in a company's securities to influence management and corporate decisions to increase the value of the company's stock. Sub-Advisors may use a "bottom-up" analysis of individual issuers in making investment decisions and/or may utilize "top-down" macroeconomic analysis to guide capital-allocation strategies and fundamental security selection.

Event Driven Strategies: Sub-Advisors that employ event driven strategies invest in the securities of companies undergoing a corporate event, such as a publicly-announced merger or acquisition. They also may invest in securities issued by companies that have recently emerged from bankruptcy, restructured, recapitalized or are involved in litigation proceedings.

The Sub-Advisors may engage in merger arbitrage transactions. Merger arbitrage seeks to capture the spread between a company's current stock price and its stock price upon the completion of a merger. Merger arbitrage also can capitalize on perceived pricing discrepancies, or "spreads," in the equity securities of two companies involved in announced corporate transactions, such as mergers, tender or exchange offers. For example, in a cash tender offer transaction, this strategy seeks to capture the spread between the tender price offered to shareholders and the price at which the target company's stock is trading.

Event driven strategies are implemented through long and short positions in equity securities that are expected to affect a security's price. Long positions are taken in securities expected to appreciate in value following the anticipated event. Short positions are taken in securities expected to depreciate in value following the anticipated event and/or as a hedge for long positions.

The Lead Sub-Advisor may allocate the Fund's assets to Sub-Advisors employing one or both of the strategies described above, and subject to the Manager's authority to determine otherwise, may change the allocations from time to time in its sole discretion without prior notice to shareholders. Each Sub-Advisor has discretion to invest its portion of the Fund's assets as it deems appropriate, based on its particular philosophy, style, strategies and views, in accordance with the Fund's investment guidelines. While each Sub-Advisor is subject to the oversight of the Manager and the Lead Sub-Advisor, neither the Manager nor Lead Sub-Advisor manages the day-to-day investment of the Fund's assets by the Sub-Advisors.

The Fund is non-diversified, which means that it is not limited to a percentage of assets that it may invest in any one issuer.
Risk [Heading] rr_RiskHeading

Principal Risks

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There is no assurance that the Fund will achieve its investment objective and you could lose part or all of your investment in the Fund. The Fund is not designed for investors who need an assured level of income and is intended to be a long-term investment. The Fund is not a complete investment program and may not be appropriate for all investors. Investors should carefully consider their own investment goals and risk tolerance before investing in the Fund. The principal risks of investing in the Fund are:

Allocation Risk
The Lead Sub-Advisor will manage the Fund's portfolio primarily by allocating Fund assets to the Sub-Advisors. There can be no assurance that these allocations will enable the Fund to achieve its investment objective(s). The Sub-Advisors' judgments about, and allocations among, asset classes and market exposures also may adversely affect the Fund's performance. This risk may be increased by the use of derivatives to increase allocations to various market exposures.

Arbitrage Strategies Risk
The value of the securities and derivative instruments in which the Fund takes long and short positions to implement the Fund's arbitrage strategies may change in an adverse manner or in an unanticipated manner, in which case the Fund may realize losses. The expected gain on an individual arbitrage investment is normally considerably smaller than the possible loss should the transaction underlying the arbitrage investment be unexpectedly terminated. The expected timing of each transaction is also important since the length of time that the Fund's capital must be committed to any given transaction may affect the rate of return realized by the Fund, and unanticipated delays in completing the underlying transaction could cause the Fund to lose money or not achieve the desired rate of return.

Counterparty Risk
The Fund is subject to the risk that a party or participant to a transaction, such as a broker or derivative counterparty, will be unwilling or unable to satisfy its obligation to make timely principal, interest or settlement payments or to otherwise honor its obligations to the Fund.

Credit Risk
The Fund is subject to the risk that the issuer or guarantor of a debt security, or the counterparty to a derivatives contract or a loan will fail to make timely payment of interest or principal or otherwise honor its obligations or default completely. Credit risk is typically greater for securities with ratings that are below investment grade (commonly referred to as "junk bonds").

Currency Risk
The Fund may have exposure to foreign currencies by making direct investments in non-U.S. currencies or in securities denominated in non-U.S. currencies, purchasing or selling forward currency exchange contracts in non-U.S. currencies, including both non-deliverable forwards ("NDFs") and deliverable forwards, non-U.S. currency futures contracts, options (including non-deliverable options ("NDOs") on non-U.S. currencies and non-U.S. currency futures) and swaps for cross-currency transaction. Foreign currencies will fluctuate, and may decline, in value relative to the U.S. dollar and other currencies and thereby affect the Fund's investments in foreign (non-U.S.) currencies or in securities that trade in, and receive revenues in, or in derivatives that provide exposure to, foreign (non-U.S.) currencies.

Cybersecurity and Operational Risk
The Fund and its service providers, and shareholders' ability to transact with the Fund, may be negatively impacted due to operational risks arising from, among other problems, human errors, systems and technology disruptions or failures, or cybersecurity incidents. It is not possible for the Fund service providers to identify all of the operational risks that may affect the Fund or to develop processes and controls to completely eliminate or mitigate their occurrence or effects. Cybersecurity incidents could also affect issuers of securities in which the Fund invests, leading to significant loss of value.

Derivatives Risk
Derivatives may involve significant risk. The use of derivative instruments may expose the Fund to additional risks that it would not be subject to if it invested directly in the securities or other instruments underlying those derivatives, including the high degree of leverage often embedded in such instruments, and potential material and prolonged deviations between the theoretical value and realizable value of a derivative. Some derivatives have the potential for unlimited loss, regardless of the size of the Fund's initial investment. Derivatives may be illiquid and may be more volatile than other types of investments. The Fund may buy or sell derivatives not traded on an exchange and which may be subject to heightened liquidity and valuation risk. Derivative investments can increase portfolio turnover and transaction costs. Derivatives also are subject to counterparty risk. As a result, the Fund may obtain no recovery of its investment or may only obtain a limited recovery, and any recovery may be delayed. Not all derivative transactions require a counterparty to post collateral, which may expose the Fund to greater losses in the event of a default by a counterparty. In addition, the Fund's investments in derivatives are subject to the following risks

  • Contracts for Difference. A contract for difference ("CFD") is a contract between two parties, typically described as "buyer" and "seller," stipulating that the seller will pay to the buyer the difference between the current value of an asset and its value in the future. (If the difference is negative, then the buyer instead pays the seller.) By entering into a CFD transaction, the Fund could incur losses because it would face many of the same types of risks as owning the underlying equity security directly. CFDs also are subject to counterparty risk and generally are illiquid.

  • Futures and Forward Contracts. Futures and forward contracts, including non-deliverable forwards ("NDFs") equity, equity index and foreign currency exchange contracts, are derivative instruments pursuant to a contract where one party pays a fixed price for an agreed amount of securities or other underlying assets at an agreed date or to buy or sell a specific currency at a future date at a price set at the time of the contract. There may be an imperfect correlation between the movement in the prices of futures contracts and the value of their underlying instruments or indexes. There can be no assurance that any strategy used will succeed. Not all forward contracts, including NDFs, require a counterparty to post collateral, which may expose the Fund to greater losses in the event of a default by a counterparty. There may not be a liquid secondary market for the futures contracts. Forward currency transactions, including NDFs, and forward currency contracts include the risks associated with fluctuations in currency. Interest rate and Treasury futures contracts expose the Fund to price fluctuations resulting from changes in interest rates. The Fund could suffer a loss if interest rates rise after the Fund has purchased an interest rate futures contract or fall after the Fund has sold an interest rate futures contract. Similarly, Treasury futures contracts expose the Fund to potential losses if interest rates do not move as expected.

  • Options. In order for a call option to be profitable, the market price of the underlying security must rise sufficiently above the call option exercise price to cover the premium and transaction costs. These costs will reduce any profit that might otherwise have been realized had the Fund bought the underlying security instead of the call option. For a put option to be profitable, the market price of the underlying security must decline sufficiently below the put option's exercise price to cover the premium and transaction costs. By using put options in this manner, the Fund will reduce any profit it might otherwise have realized from having shorted the declining underlying security by the premium paid for the put option and by transaction costs. If the Fund sells a put option, there is a risk that the Fund may be required to buy the underlying asset at a disadvantageous price. If the Fund sells a call option, there is a risk that the Fund may be required to sell the underlying asset at a disadvantageous price. If the Fund sells a call option on an underlying asset that the Fund owns and the underlying asset has increased in value when the call option is exercised, the Fund will be required to sell the underlying asset at the call price and will not be able to realize any of the underlying asset's value above the call price.

  • Swap Agreements. Swaps can involve greater risks than a direct investment in an underlying asset, because swaps typically include a certain amount of embedded leverage and as such are subject to leveraging risk. If swaps are used as a hedging strategy, the Fund is subject to the risk that the hedging strategy may not eliminate the risk that it is intended to offset, due to, among other reasons, the occurrence of unexpected price movements or the non-occurrence of expected price movements. Swaps also may be difficult to value. Equity swaps are subject to liquidity risk and counterparty risk. Total return swaps and currency swaps are subject to counterparty risk, credit risk and liquidity risk. In addition to these risks, total return swaps are subject to market risk and interest rate risk, if the underlying securities are bonds or other debt obligations. In addition, currency swaps are subject to currency risk.

Emerging Markets Risk
When investing in emerging markets, the risks of investing in foreign securities discussed below are heightened. Emerging markets are generally smaller, less developed, less liquid and more volatile than the securities markets of the U.S. and other developed markets. There are also risks of: greater political uncertainties; an economy's dependence on revenues from particular commodities or on international aid or development assistance; currency transfer restrictions; a limited number of potential buyers for such securities resulting in increased volatility and limited liquidity for emerging market securities; trading suspensions; and delays and disruptions in securities settlement procedures.

Equity Investments Risk
Equity securities are subject to investment risk and market risk. The Fund's investments in equity securities may include common stocks trading on U.S. and non-U.S. exchanges, securities convertible into or exchangeable for common stocks trading on U.S. and non-U.S. exchanges, depositary receipts and U.S. dollar-denominated foreign stocks traded on U.S. exchanges. Such investments may expose the Fund to additional risks.

  • Common Stock. The value of a company's common stock may fall as a result of factors affecting the company, companies in the same industry or sector, or the financial markets overall. Common stock generally is subordinate to preferred stock upon the liquidation or bankruptcy of the issuing company.

  • Convertible Securities. Convertible securities are sensitive to movements in interest rates. In addition, convertible securities are subject to the risk that the credit standing of the issuer may have an effect on the convertible securities' investment value.

  • Depositary Receipts. Depositary receipts and U.S. dollar-denominated foreign stocks traded on U.S. exchanges are subject to certain of the risks associated with investing directly in foreign securities, including, but not limited to, currency exchange rate fluctuations, political and financial instability in the home country of a particular depositary receipt or foreign stock, less liquidity and more volatility, less government regulation and supervision and delays in transaction settlement.

Event-Driven Strategies Risk
The Fund's use of event-driven or arbitrage strategies will cause the Fund to invest in the securities of companies undergoing an actual or anticipated corporate event or transaction (i.e., acquisitions, spin-offs, reorganizations and liquidations, tender offers and bankruptcies). A change in the terms or delay in the timing of these events, or the failure of these events to occur at all, may have a significant negative effect on the Fund's performance.

Foreign Investing Risk
Non-U.S. investments carry potential risks not associated with U.S. investments. Such risks include, but are not limited to: (1) currency exchange rate fluctuations, (2) political and financial instability, (3) less liquidity, (4) lack of uniform accounting, auditing and financial reporting standards, (5) increased price volatility, (6) less government regulation and supervision of foreign stock exchanges, brokers and listed companies; and (7) delays in transaction settlement in some foreign markets.

Global Financial Markets Risk
Global economic and financial markets are becoming increasingly interconnected and conditions (including recent volatility and instability) and events (including natural disasters) in one country, region or financial market may adversely impact issuers in a different country, region or financial market. In addition, governmental and quasi-governmental organizations have taken a number of unprecedented actions designed to support the markets. Such events and conditions may adversely affect the value of the Fund's securities, result in greater market or liquidity risk or cause difficulty valuing the Fund's portfolio instruments or achieving the Fund's objective.

Growth Companies Risk
Growth companies are expected to increase their earnings at a certain rate. When these expectations are not met, the prices of these stocks may go down, even if earnings showed an absolute increase. Growth company stocks may lack the dividend yield that can cushion stock prices in market downturns.

Hedging Risk
If the Fund uses a hedging instrument at the wrong time or judges the market conditions incorrectly, or the hedged instrument does not correlate to the risk sought to be hedged, the hedge might be unsuccessful, reduce the Fund's return, or create a loss.

High Portfolio Turnover Risk
Portfolio turnover is a measure of the Fund's trading activity over a one-year period. High portfolio turnover could increase the Fund's transaction costs, have a negative impact on performance, and generate higher capital gain distributions to shareholders than if the Fund has a lower portfolio turnover rate.

Interest Rate Risk
The Fund is subject to the risk that the market value of securities or derivatives it holds will decline due to rising interest rates. Generally, the value of investments with interest rate risk, such as fixed income securities, will move in the opposite direction as movements to interest rates. Convertible securities have fixed income characteristics and, therefore, can be adversely impacted by rising interest rates. Individual equities may be negatively or positively impacted by rising interest rates depending on the specific circumstances of an individual company's prospects. The Federal Reserve raised the federal funds rate in December 2016 and March 2017 and has signaled additional increases in 2017. Interest rates may rise, perhaps significantly and/or rapidly, potentially resulting in substantial losses to the Fund. The prices of securities or derivatives are also affected by their durations. Securities or derivatives with longer duration generally have greater sensitivity to changes in interest rates. An increase in interest rates can impact markets broadly as well. Some investors buy securities and derivatives with borrowed money; an increase in interest rates can cause a decline in those markets.

Investment Risk
An investment in the Fund is not a deposit with a bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency. When you sell your shares of the Fund, they could be worth less than what you paid for them. Therefore, you may lose money by investing in the Fund.

Issuer Risk
The value of, and/or the return generated by, a security may decline for a number of reasons which directly relate to the issuer, such as management performance, financial leverage and reduced demand for the issuer's goods or services, as well as the historical and prospective earnings of the issuer and the value of its assets.

Large Capitalization Companies Risk
The securities of large market capitalization companies may underperform other segments of the market because such companies may be less responsive to competitive challenges and opportunities and may be unable to attain the high growth rates of successful smaller companies, especially during periods of economic expansion.

Leverage Risk
The Fund's use of futures, forward contracts, swaps, other derivative instruments and selling securities short will have the economic effect of financial leverage. Financial leverage magnifies the exposure to the swings in prices of an asset or class of assets underlying a derivative instrument and results in increased volatility, which means that the Fund will have the potential for greater losses than if the Fund does not use the derivative instruments that have a leveraging effect. Leverage may result in losses that exceed the amount originally invested and may accelerate the rate of losses. Leverage tends to magnify, sometimes significantly, the effect of any increase or decrease in the Fund's exposure to an asset or class of assets and may cause the Fund's net asset value ("NAV") to be volatile.

Liquidity Risk
The Fund is susceptible to the risk that certain investments held by the Fund, such as structured notes and other derivative instruments, may have limited marketability or be subject to restrictions on sale, and may be difficult or impossible to purchase or sell at favorable times or prices. The Fund could lose money if it is unable to dispose of an investment at a time that is most beneficial to the Fund. The Fund may be required to dispose of investments at unfavorable times or prices to satisfy obligations, which may result in losses or may be costly to the Fund. For example, the Fund may be forced to sell certain investments at unfavorable prices to meet redemption requests or other cash needs. Judgment plays a greater role in pricing illiquid investments than in investments with more active markets.

Market Risk
The Fund is subject to the risk that the securities markets will move down, sometimes rapidly and unpredictably based on overall economic conditions and other factors. The value of a security may decline due to general market conditions which are not specifically related to a particular company, such as real or perceived adverse economic conditions, changes in the general outlook for corporate earnings, changes in interest or currency rates or adverse investment sentiment generally. Changes in the financial condition of a single issuer can impact a market as a whole.

Market Direction Risk
Since the Fund will typically hold both long and short positions, an investment in the Fund will involve market risks associated with different types of investment decisions than those made for a typical "long only" fund. The Fund's results could suffer both when there is a general market advance and the Fund holds significant "short" positions, and when there is a general market decline and the Fund holds significant "long" positions.

Model Risk
The Sub-Advisors may use proprietary modeling systems to implement their investment strategies for the Fund. Investments selected using these models may perform differently than expected as a result of the factors used in the models, the weight placed on each factor, changes from the factors' historical trends and technical issues in the construction and implementation of the models. There is no assurance that the models are complete or accurate, or representative of future market cycles, nor will they necessarily be beneficial to the Fund if they are accurate. These systems may negatively affect Fund performance for various reasons, including human judgment, inaccuracy of historical data and non-quantitative factors (such as market or trading system dysfunctions, investor fear or over-reaction).

Multi-Manager Risk
The Fund's performance depends on, among other things, the Lead Sub-Advisor's success in monitoring and allocating the Fund's assets among the Sub-Advisors. The Sub-Advisors investment styles may not always be complementary. The Sub-Advisors make investment decisions independently of one another, and may make conflicting investment decisions. The Fund's multi-manager approach may result in the Fund investing a significant percentage of its assets in certain types of securities, which could be beneficial or detrimental to the Fund's performance depending on the performance of those securities and the overall market environment. The Sub-Advisors may underperform the market generally or underperform other investment managers that could have been selected for the Fund. The Lead Sub-Advisor and the Sub-Advisors also may use proprietary or licensed strategies that are based on considerations and factors that are not fully disclosed to the Board, the Manager or the Lead Sub-Advisor. The success of a particular Sub-Advisor in implementing its investment strategy is dependent on the expertise of its portfolio managers, and certain Sub-Advisors may have a limited number of investment management professionals. The loss of one or more of a Sub-Advisor's key investment professionals could have a materially adverse effect on the performance of the Fund. A Sub-Advisor may have little or no experience managing the assets of a registered investment company which, unlike the other accounts a Sub-Advisor may manage, is subject to daily inflows and outflows of investor cash and are subject to certain legal and tax-related restrictions on their investments and operations.

Non-Diversification Risk
The Fund is non-diversified, which means the Fund may focus its investments in the securities of a comparatively small number of issuers. Investments in securities of a limited number of issuers exposes the Fund to greater market risk and potential losses than if assets were diversified among the securities of a greater number of issuers.

Other Investment Companies Risk
The Fund may invest in shares of other registered investment companies, including money market funds and exchange-traded funds ("ETFs"). To the extent that the Fund invests in shares of other registered investment companies, you will indirectly bear fees and expenses charged by those investment companies in addition to the Fund's direct fees and expenses and will be subject to the risks associated with investments in those funds. For example, to the extent the Fund invests in ETFs that invest in equity securities, fixed income securities and/or foreign securities, or track an index, the Fund is subject to the risks associated with the underlying investments held by the ETF or the index fluctuations to which the ETF is subject. Because ETFs are listed on an exchange, they may be subject to trading halts, may trade at a discount or premium to their NAV and may not be liquid. Money market funds are subject to interest rate risk, credit risk, and market risk.

Sector Risk
To the extent the Fund invests more heavily in particular sectors, its performance will be especially sensitive to developments and economic conditions that significantly affect those sectors. Individual sectors may move up and down more than the broader market. The industries that constitute a sector may all react in the same way to economic, political or regulatory events. The Fund may, at times be substantially over-weighted in certain economic sectors and under-weighted in others. Accordingly, the Fund's performance is likely to be disproportionately affected by the factors influencing those sectors.

Securities Selection Risk
Securities selected by the Manager, the Sub-Advisors, or the Lead Sub-Advisor for the Fund may not perform to expectations. This could result in the Fund's underperformance compared to other funds with similar investment objectives.

Segregated Assets Risk
In connection with certain transactions that may give rise to future payment obligations, including short sales and investments in derivatives, the Fund may be required to maintain a segregated amount of, or otherwise earmark, cash or liquid securities to cover the obligation. Segregated assets cannot be sold while the position they are covering is outstanding unless they are replaced with other assets of equal value. The need to maintain cash or other liquid securities in segregated accounts could limit the Fund's ability to pursue other opportunities as they arise.

Short Position Risk
The Fund's losses are potentially unlimited in a short position transaction because there is potentially no limit on the amount that the security that the Fund is required to purchase may have appreciated. Because the Fund may invest the proceeds of a short sale, another effect of short selling on the Fund is similar to the effect of leverage, in that it may amplify changes in the Fund's NAV since it may increase the exposure of the Fund to certain markets.

Small and Mid-Capitalization Companies Risk
Investing in the securities of small and mid-capitalization companies involves greater risk and the possibility of greater price volatility than investing in larger capitalization and more established companies. Since small and mid-capitalization companies may have limited operating history, product lines, and financial resources, the securities of these companies may lack sufficient market liquidity, and they can be particularly sensitive to expected changes in interest rates, borrowing costs and earnings. In general, these risks are greater for small-capitalization companies than for mid-capitalization companies.

Valuation Risk
The Fund may value certain assets at a price different from the price at which they can be sold. This risk may be especially pronounced for investments, such as certain derivatives, which may be illiquid or which may become illiquid.

Value Stocks Risk
Value stocks are subject to the risk that their intrinsic value may never be realized by the market or that their prices may decline. The Fund's investments in value stocks seek to limit potential downside price risk over time, however, value stock prices still may decline substantially. In addition, the Fund may produce more modest gains as a trade-off for this potentially lower risk. The Fund's investment in value stocks could cause the Fund to underperform funds that use a growth or non-value approach to investing or have a broader investment style.
Risk Nondiversified Status [Text] rr_RiskNondiversifiedStatus Non-Diversification Risk The Fund is non-diversified, which means the Fund may focus its investments in the securities of a comparatively small number of issuers. Investments in securities of a limited number of issuers exposes the Fund to greater market risk and potential losses than if assets were diversified among the securities of a greater number of issuers.
Risk Lose Money [Text] rr_RiskLoseMoney There is no assurance that the Fund will achieve its investment objective and you could lose part or all of your investment in the Fund.
Risk Not Insured Depository Institution [Text] rr_RiskNotInsuredDepositoryInstitution An investment in the Fund is not a deposit with a bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.
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Fund Performance

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The bar chart and table below provide an indication of risk by showing changes in the Fund's performance over time. The bar chart shows the Fund's performance for its first calendar year of operations. The table shows how the Fund's average annual total returns compare to a broad-based market index for the periods indicated. You may obtain updated performance information on the Fund's website at www.americanbeaconfunds.com. Past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future.
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Calendar year total returns for Investor Class Shares. Year Ended 12/31
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Highest Quarterly Return:
3.83% 3rd Quarter 2016
1/01/2016 through 12/31/2016

Lowest Quarterly Return:
-2.57% 1st Quarter 2016
1/01/2016 through 12/31/2016

The calendar year-to-date total return as of 3/31/2017 was 3.38%.
Performance Table Heading rr_PerformanceTableHeading

Average annual total returns for periods ended December 31, 2016
Performance Past Does Not Indicate Future [Text] rr_PerformancePastDoesNotIndicateFuture 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 an indication of risk by showing changes in the Fund's performance over time. The bar chart shows the Fund's performance for its first calendar year of operations. The table shows how the Fund's average annual total returns compare to a broad-based market index for the periods indicated.
Performance Availability Website Address [Text] rr_PerformanceAvailabilityWebSiteAddress www.americanbeaconfunds.com
(American Beacon Grosvenor Long/Short Fund℠) | MSCI World Index (Reflects no deduction for fees expenses or taxes)  
Prospectus: rr_ProspectusTable  
1 Year rr_AverageAnnualReturnYear01 7.51%
Since Inception rr_AverageAnnualReturnSinceInception 10.24%
(American Beacon Grosvenor Long/Short Fund℠) | Class A  
Prospectus: rr_ProspectusTable  
Maximum sales charge imposed on purchases (as a percentage of offering price) rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice 5.75%
Maximum deferred sales charge (as a percentage of the lower of original offering price or redemption proceeds) rr_MaximumDeferredSalesChargeOverOther 0.50% [13]
Management Fees rr_ManagementFeesOverAssets 1.85%
Distribution (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets 0.25%
Other Expenses rr_OtherExpensesOverAssets 2.95%
Component 1 Other Expenses Over Assets rr_Component1OtherExpensesOverAssets 0.46%
Remaining Other Expenses rr_Component3OtherExpensesOverAssets 2.49%
Acquired Fund Fees and Expenses rr_AcquiredFundFeesAndExpensesOverAssets 0.01%
Total Annual Fund Operating Expenses rr_ExpensesOverAssets 5.06% [14]
Fee Waiver and/or expense reimbursement rr_FeeWaiverOrReimbursementOverAssets (2.09%) [15]
Total Annual Fund Operating Expenses after fee waiver and/or expense reimbursement rr_NetExpensesOverAssets 2.97%
Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 $ 858
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 1,830
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 2,802
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 $ 5,225
1 Year rr_AverageAnnualReturnYear01 4.22%
Since Inception rr_AverageAnnualReturnSinceInception 4.44%
Inception Date of Class rr_AverageAnnualReturnInceptionDate Oct. 01, 2015
(American Beacon Grosvenor Long/Short Fund℠) | Class C  
Prospectus: rr_ProspectusTable  
Maximum sales charge imposed on purchases (as a percentage of offering price) rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice none
Maximum deferred sales charge (as a percentage of the lower of original offering price or redemption proceeds) rr_MaximumDeferredSalesChargeOverOther 1.00%
Management Fees rr_ManagementFeesOverAssets 1.85%
Distribution (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets 1.00%
Other Expenses rr_OtherExpensesOverAssets 2.94%
Component 1 Other Expenses Over Assets rr_Component1OtherExpensesOverAssets 0.46%
Remaining Other Expenses rr_Component3OtherExpensesOverAssets 2.48%
Acquired Fund Fees and Expenses rr_AcquiredFundFeesAndExpensesOverAssets 0.01%
Total Annual Fund Operating Expenses rr_ExpensesOverAssets 5.80% [14]
Fee Waiver and/or expense reimbursement rr_FeeWaiverOrReimbursementOverAssets (2.08%) [15]
Total Annual Fund Operating Expenses after fee waiver and/or expense reimbursement rr_NetExpensesOverAssets 3.72%
Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 $ 474
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 1,539
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 2,686
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 5,475
Expense Example, No Redemption, 1 Year rr_ExpenseExampleNoRedemptionYear01 374
Expense Example, No Redemption, 3 Years rr_ExpenseExampleNoRedemptionYear03 1,539
Expense Example, No Redemption, 5 Years rr_ExpenseExampleNoRedemptionYear05 2,686
Expense Example, No Redemption, 10 Years rr_ExpenseExampleNoRedemptionYear10 $ 5,475
1 Year rr_AverageAnnualReturnYear01 3.54%
Since Inception rr_AverageAnnualReturnSinceInception 3.65%
Inception Date of Class rr_AverageAnnualReturnInceptionDate Oct. 01, 2015
(American Beacon Grosvenor Long/Short Fund℠) | Class Y  
Prospectus: rr_ProspectusTable  
Maximum sales charge imposed on purchases (as a percentage of offering price) rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice none
Maximum deferred sales charge (as a percentage of the lower of original offering price or redemption proceeds) rr_MaximumDeferredSalesChargeOverOther none
Management Fees rr_ManagementFeesOverAssets 1.85%
Distribution (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets none
Other Expenses rr_OtherExpensesOverAssets 2.90%
Component 1 Other Expenses Over Assets rr_Component1OtherExpensesOverAssets 0.46%
Remaining Other Expenses rr_Component3OtherExpensesOverAssets 2.44%
Acquired Fund Fees and Expenses rr_AcquiredFundFeesAndExpensesOverAssets 0.01%
Total Annual Fund Operating Expenses rr_ExpensesOverAssets 4.76% [14]
Fee Waiver and/or expense reimbursement rr_FeeWaiverOrReimbursementOverAssets (2.09%) [15]
Total Annual Fund Operating Expenses after fee waiver and/or expense reimbursement rr_NetExpensesOverAssets 2.67%
Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 $ 270
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 1,247
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 2,228
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 $ 4,702
1 Year rr_AverageAnnualReturnYear01 4.62%
Since Inception rr_AverageAnnualReturnSinceInception 4.76%
Inception Date of Class rr_AverageAnnualReturnInceptionDate Oct. 01, 2015
(American Beacon Grosvenor Long/Short Fund℠) | Institutional Class  
Prospectus: rr_ProspectusTable  
Maximum sales charge imposed on purchases (as a percentage of offering price) rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice none
Maximum deferred sales charge (as a percentage of the lower of original offering price or redemption proceeds) rr_MaximumDeferredSalesChargeOverOther none
Management Fees rr_ManagementFeesOverAssets 1.85%
Distribution (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets none
Other Expenses rr_OtherExpensesOverAssets 2.43%
Component 1 Other Expenses Over Assets rr_Component1OtherExpensesOverAssets 0.46%
Remaining Other Expenses rr_Component3OtherExpensesOverAssets 1.97%
Acquired Fund Fees and Expenses rr_AcquiredFundFeesAndExpensesOverAssets 0.01%
Total Annual Fund Operating Expenses rr_ExpensesOverAssets 4.29% [14]
Fee Waiver and/or expense reimbursement rr_FeeWaiverOrReimbursementOverAssets (1.72%) [15]
Total Annual Fund Operating Expenses after fee waiver and/or expense reimbursement rr_NetExpensesOverAssets 2.57%
Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 $ 260
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 1,145
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 2,042
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 $ 4,343
1 Year rr_AverageAnnualReturnYear01 4.72%
Since Inception rr_AverageAnnualReturnSinceInception 4.84%
Inception Date of Class rr_AverageAnnualReturnInceptionDate Oct. 01, 2015
(American Beacon Grosvenor Long/Short Fund℠) | Investor Class  
Prospectus: rr_ProspectusTable  
Maximum sales charge imposed on purchases (as a percentage of offering price) rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice none
Maximum deferred sales charge (as a percentage of the lower of original offering price or redemption proceeds) rr_MaximumDeferredSalesChargeOverOther none
Management Fees rr_ManagementFeesOverAssets 1.85%
Distribution (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets none
Other Expenses rr_OtherExpensesOverAssets 3.16%
Component 1 Other Expenses Over Assets rr_Component1OtherExpensesOverAssets 0.46%
Remaining Other Expenses rr_Component3OtherExpensesOverAssets 2.70%
Acquired Fund Fees and Expenses rr_AcquiredFundFeesAndExpensesOverAssets 0.01%
Total Annual Fund Operating Expenses rr_ExpensesOverAssets 5.02% [14]
Fee Waiver and/or expense reimbursement rr_FeeWaiverOrReimbursementOverAssets (2.07%) [15]
Total Annual Fund Operating Expenses after fee waiver and/or expense reimbursement rr_NetExpensesOverAssets 2.95%
Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 $ 298
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 1,322
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 2,345
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 $ 4,905
Annual Return 2016 rr_AnnualReturn2016 4.32%
Year to Date Return, Label rr_YearToDateReturnLabel The calendar year-to-date total return as of 3/31/2017 was 3.38%.
Bar Chart, Year to Date Return rr_BarChartYearToDateReturn 3.38%
Bar Chart, Year to Date Return, Date rr_BarChartYearToDateReturnDate Mar. 31, 2017
Highest Quarterly Return, Label rr_HighestQuarterlyReturnLabel Highest Quarterly Return: 3.83% 3rd Quarter 2016 1/01/2016 through 12/31/2016
Highest Quarterly Return rr_BarChartHighestQuarterlyReturn 3.83%
Highest Quarterly Return, Date rr_BarChartHighestQuarterlyReturnDate Sep. 30, 2016
Lowest Quarterly Return, Label rr_LowestQuarterlyReturnLabel Lowest Quarterly Return: -2.57% 1st Quarter 2016 1/01/2016 through 12/31/2016
Lowest Quarterly Return rr_BarChartLowestQuarterlyReturn (2.57%)
Lowest Quarterly Return, Date rr_BarChartLowestQuarterlyReturnDate Mar. 31, 2016
1 Year rr_AverageAnnualReturnYear01 4.32%
Since Inception rr_AverageAnnualReturnSinceInception 4.44%
Inception Date of Class rr_AverageAnnualReturnInceptionDate Oct. 01, 2015
(American Beacon Grosvenor Long/Short Fund℠) | Investor Class | Returns After Taxes on Distributions  
Prospectus: rr_ProspectusTable  
1 Year rr_AverageAnnualReturnYear01 3.45%
Since Inception rr_AverageAnnualReturnSinceInception 3.74%
Inception Date of Class rr_AverageAnnualReturnInceptionDate Oct. 01, 2015
(American Beacon Grosvenor Long/Short Fund℠) | Investor Class | Returns After Taxes on Distributions and Sales of Fund Shares  
Prospectus: rr_ProspectusTable  
1 Year rr_AverageAnnualReturnYear01 2.47%
Since Inception rr_AverageAnnualReturnSinceInception 3.08%
Inception Date of Class rr_AverageAnnualReturnInceptionDate Oct. 01, 2015
(American Beacon Numeric Integrated Alpha Fund℠)  
Prospectus: rr_ProspectusTable  
Objective [Heading] rr_ObjectiveHeading

Investment Objective

Objective, Primary [Text Block] rr_ObjectivePrimaryTextBlock

The Fund's investment objective is long-term 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. More information is available from your financial professional and in "Choosing Your Share Class" on page 15 of the Prospectus.
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 May 31, 2018
Other Expenses, New Fund, Based on Estimates [Text] rr_OtherExpensesNewFundBasedOnEstimates Other Expenses and Acquired Fund Fees and Expenses are based on estimated expenses for the current fiscal year.
Expense Example [Heading] rr_ExpenseExampleHeading

Example
Expense Example Narrative [Text Block] rr_ExpenseExampleNarrativeTextBlock

This 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 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 and that the Fund's operating expenses remain the same, except that the Example reflects the fee waiver/expense reimbursement arrangement for each share class through May 31, 2018. Although your actual costs may be higher or lower, based on these assumptions, your costs would be:
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. For the period from the Fund's commencement of operations on November 1, 2016 to January 31, 2017, the Fund's portfolio turnover rate was 114% of the average value of its portfolio.
Portfolio Turnover, Rate rr_PortfolioTurnoverRate 114.00%
Strategy [Heading] rr_StrategyHeading

Principal Investment Strategies

Strategy Narrative [Text Block] rr_StrategyNarrativeTextBlock

The Fund seeks to achieve its investment objective primarily by implementing fundamental, research-based strategies that involve taking long and short positions in equity and equity-related securities in global markets. The Fund also utilizes strategies that seek to benefit from price trends and patterns, such as momentum, valuation and investor sentiment, in global, including foreign and emerging market, indexes. The sub-advisor employs a computerized process that uses quantitative modeling to accumulate information and identify potential investment opportunities to generate, long-term capital appreciation in excess of its performance benchmarks (commonly referred to as "alpha"), with less volatility than that of the equity markets.

The Fund primarily invests in equity securities including common stock, preferred stock, depositary receipts, and exchange-traded funds ("ETFs"). The Fund also utilizes equity-related securities including futures on equity indexes, including those of foreign and emerging markets, and total return swaps based on individual companies (also referred to as contracts for difference ("CFDs")). A CFD is a form of equity swap in which its value is based on the fluctuating value of some underlying asset and enables a fund to take short or long positions on an underlying stock, therefore, potentially capturing gains on movements in the share prices of the stock without the need to own the underlying stock. In addition, the Fund may invest in U. S. Treasuries and in futures on U.S. Treasuries. The Fund's use of futures and swaps is intended to generate profits, adjust leverage, hedge exposures, and manage volatility. The Fund's investments may be denominated in foreign currencies. Net exposure to non-U.S. currencies may be hedged using non-U.S. forward currency exchange contracts, including non-deliverable forwards ("NDFs").

The sub-advisor's long-short investment strategy is based on a highly-detailed and systematic approach to gathering and monitoring company financial information, market prices and other data that identify investment opportunities. The Fund invests in companies of any market capitalization but will generally invest in medium- and large-capitalization companies.

The Fund will take long positions in companies with attractive fundamentals and whose prices appear undervalued, and the Fund will take short positions in companies with deteriorating fundamentals and whose prices appear overvalued. Long positions benefit when the price of the security increases. Short positions benefit when the price of the security decreases. Patterns and variables that may affect company stock prices include the general business environment, mergers and acquisitions, restructurings, litigation or other events.

The sub-advisor's strategies also utilize price-trends and patterns based on broad, macroeconomic and market observations. At times, global equity and U.S. Treasury markets may exhibit trends based on investor sentiment, earnings expectations, price momentum and other variables. The sub-advisor analyzes these trends and seeks to generate long-term capital appreciation by taking both long and short positions on underlying stocks.

While there is no limit on the Fund's ability to take short positions, the Fund expects to maintain a net-long position in which the total value of its long holdings exceeds that of its short holdings. The amount of long and short holdings will vary based on the sub-advisor's outlook for individual companies and for market conditions in general. The greater the value of long positions as compared to the short positions, the more likely the Fund's returns will follow the direction of the equity market.

The Fund may also invest cash balances in other investment companies, including money market funds and may purchase and sell futures contracts to gain market exposure on cash balances or reduce market exposure in anticipation of liquidity needs.

In pursuing its investment strategies, the Fund typically engages in active trading strategies that result in high portfolio turnover.

The Fund is non-diversified, which means that it is not limited to a percentage of assets that may be invested in any one issuer.
Risk [Heading] rr_RiskHeading

Principal Risks

Risk Narrative [Text Block] rr_RiskNarrativeTextBlock

There is no assurance that the Fund will achieve its investment objective and you could lose part or all of your investment in the Fund. The Fund is not designed for investors who need an assured level of income and is intended to be a long-term investment. The Fund is not a complete investment program and may not be appropriate for all investors. Investors should carefully consider their own investment goals and risk tolerance before investing in the Fund. The principal risks of investing in the Fund are:

Allocation and Correlation Risk
The sub-advisor's judgments about, and allocations between asset classes and market exposures may adversely affect the Fund's performance. There can be no assurance, particularly during periods of market disruption and stress, that the sub-advisor's judgements about asset allocation and market correlations will be correct.

Counterparty Risk
The Fund is subject to the risk that a party or participant to a transaction, such as a broker or derivative counterparty, will be unwilling or unable to satisfy its obligation to make timely principal, interest or settlement payments or to otherwise honor its obligations to the Fund.

Credit Risk
The Fund is subject to the risk that the issuer or guarantor of a debt security, or the counterparty to a derivatives contract will fail to make timely payment of interest or principal or otherwise honor its obligations or default completely.

Currency Risk
The Fund may have exposure to foreign currencies by making direct investments in non-U.S. currencies or in securities denominated in non-U.S. currencies, purchasing or selling forward currency exchange contracts in non-U.S. currencies, non-U.S. currency futures contracts and swaps for cross-currency investments. Foreign currencies will fluctuate, and may decline, in value relative to the U.S. dollar and other currencies and thereby affect the Fund's investments in foreign (non-U.S.) currencies or in securities that trade in, and receive revenues in, or in derivatives that provide exposure to, foreign (non-U.S.) currencies.

Cybersecurity and Operational Risk
The Fund and its service providers, and shareholders' ability to transact with the Fund, may be negatively impacted due to operational risks arising from, among other problems, human errors, systems and technology disruptions or failures, or cybersecurity incidents. It is not possible for the Fund service providers to identify all of the operational risks that may affect the Fund or to develop processes and controls to completely eliminate or mitigate their occurrence or effects. Cybersecurity incidents could also affect issuers of securities in which the Fund invests, leading to significant loss of value.

Derivatives Risk
Derivatives may involve significant risk. The use of derivative instruments may expose the Fund to additional risks that it would not be subject to if it invested directly in the securities or other instruments underlying those derivatives, including the high degree of leverage often embedded in such instruments, and potential material and prolonged deviations between the theoretical value and realizable value of a derivative. Some derivatives have the potential for unlimited loss, regardless of the size of the Fund's initial investment. Derivatives may be illiquid and may be more volatile than other types of investments. The Fund may buy or sell derivatives not traded on an exchange and which may be subject to heightened liquidity and valuation risk. There may not be a liquid secondary market for the derivative instruments traded by the Fund. Derivative investments can increase portfolio turnover and transaction costs. Derivatives also are subject to counterparty risk. As a result, the Fund may obtain no recovery of its investment or may only obtain a limited recovery, and any recovery may be delayed. Not all derivative transactions require a counterparty to post collateral, which may expose the Fund to greater losses in the event of a default by a counterparty. In addition, the Fund's investments in derivatives are subject to the following risks:

  • Contracts for Difference ("CFD"). A CFD is a contract between two parties, buyer and seller, stipulating that the seller will pay to the buyer the difference between the nominal value of the underlying stock at the opening of the contract and the stock's value at the close of the contract. The size of the contract and the contract's expiration date are typically negotiated by the parties to the CFD transaction. CFDs enable a fund to take short or long positions on an underlying stock and thus potentially capture gains on movements in the share prices of the stock without the need to own the underlying stock. By entering into a CFD transaction, the Fund could incur losses because it would face many of the same types of risks as owning the underlying equity securities directly as well as the other risks associated with the investment in swaps.

  • Futures and Forward Contracts. Futures and forward contracts, including foreign currency exchange contracts and non-deliverable forwards ("NDFs"), are derivative instruments pursuant to a contract where one party pays a fixed price for an agreed amount of securities or other underlying assets at an agreed date or to buy or sell a specific currency at a future date at a price set at the time of the contract. There may be an imperfect correlation between the movement in prices of the futures contracts and the value of their underlying instruments or indexes. There can be no assurance that any strategy used will succeed. Not all forward contracts, including NDFs, require a counterparty to post collateral, which may expose the Fund to greater losses in the event of a default by a counterparty. There may not be a liquid secondary market for the futures contracts. Forward currency transactions, including NDFs, and forward currency contracts include the risks associated with fluctuations in currency. Interest rate and Treasury futures contracts expose the Fund to price fluctuations resulting from changes in interest rates. The Fund could suffer a loss if interest rates rise after the Fund has purchased an interest rate futures contract or fall after the Fund has sold an interest rate futures contract. Similarly, Treasury futures contracts expose the Fund to potential losses if interest rates do not move as expected. Equity index futures contracts expose the Fund to volatility in an underlying securities index.

  • Swap Agreements. Swaps can involve greater risks than a direct investment in an underlying asset because swaps typically include a certain amount of embedded leverage and, as such, are subject to leverage risk. If swaps are used as a hedging strategy, the Fund is subject to the risk that the hedging strategy may not eliminate the risk that it is intended to offset, due to, among other reasons, the occurrence of unexpected price movements or the non-occurrence of expected price movements. Swaps also may be difficult to value. Swap Agreements are subject to counterparty risk, credit risk and liquidity risk. In addition, total return swaps are subject to interest rate risk and market risk if the underlying securities are bonds or other debt obligations.

Emerging Markets Risk
When investing in emerging markets, the risks of investing in foreign securities discussed below are heightened. Emerging markets are generally smaller, less developed, less liquid and more volatile than the securities markets of the U.S. and other developed markets. There are also risks of: greater political uncertainties; an economy's dependence on revenues from particular commodities or on international aid or development assistance; currency transfer restrictions; a limited number of potential buyers for such securities resulting in increased volatility and limited liquidity for emerging market securities; trading suspensions; and delays and disruptions in securities settlement procedures.

Equity Investments Risk
Equity securities are subject to investment risk and market risk. The Fund's investments in equity securities may include common stocks, preferred stocks, and depositary receipts. Such investments may expose the Fund to additional risks.

  • Common Stock. The value of a company's common stock may fall as a result of factors affecting the company, companies in the same industry or sector, or the financial markets overall. Common stock generally is subordinate to preferred stock upon the liquidation or bankruptcy of the issuing company.

  • Depositary Receipts. Investments in depositary receipts are subject to certain of the risks associated with investing directly in foreign securities, including, but not limited to, currency exchange rate fluctuations and political and financial instability in the home country of a particular depositary receipt or foreign stock, less liquidity and more volatility, less government regulation and supervision and delays in transaction settlement.

  • Preferred Stock. Preferred stocks are sensitive to movements in interest rates. Preferred stocks also may be less liquid than common stocks and, unlike common stocks, participation in the growth of an issuer may be limited. Distributions on preferred stocks generally are payable at the discretion of an issuer and after required payments to bond holders.

Foreign Investing Risk
Non-U.S. investments carry potential risks not associated with U.S. investments. Such risks include, but are not limited to: (1) currency exchange rate fluctuations, (2) political and financial instability, (3) less liquidity, (4) lack of uniform accounting, auditing and financial reporting standards, (5) increased price volatility, (6) less government regulation and supervision of foreign stock exchanges, brokers and listed companies; and (7) delays in transaction settlement in some foreign markets.

Hedging Risk
If the Fund uses a hedging instrument at the wrong time or judges the market conditions incorrectly, or the hedged instrument does not correlate to the risk sought to be hedged, the hedge might be unsuccessful, reduce the Fund's return, or create a loss.

High Portfolio Turnover Risk
Portfolio turnover is a measure of the Fund's trading activity over a one-year period. High portfolio turnover could increase the Fund's transaction costs, have a negative impact on performance, and generate higher capital gain distributions to shareholders than if the Fund had a lower portfolio turnover rate.

Interest Rate Risk
The Fund is subject to the risk that the market value of securities or derivatives it holds will decline due to rising interest rates. Generally, the value of investments with interest rate risk, such as fixed income securities, will move in the opposite direction as movements to interest rates. Convertible securities have fixed income characteristics and, therefore, can be adversely impacted by rising interest rates. Individual equities may be negatively or positively impacted by rising interest rates depending on the specific circumstances of an individual company's prospects. The Federal Reserve raised the federal funds rate in December 2016 and March 2017 and has signaled additional increases in 2017. Interest rates may rise, perhaps significantly and/or rapidly, potentially resulting in substantial losses to the Fund. The prices of securities or derivatives are also affected by their durations. Securities or derivatives with longer duration generally have greater sensitivity to changes in interest rates. An increase in interest rates can impact markets broadly as well. Some investors buy securities and derivatives with borrowed money; an increase in interest rates can cause a decline in those markets.

Investment Risk
An investment in the Fund is not a deposit with a bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency. When you sell your shares of the Fund, they could be worth less than what you paid for them. Therefore, you may lose money by investing in the Fund.

Issuer Risk
The value of, and/or the return generated by, a security may decline for a number of reasons which directly relate to the issuer, such as management performance, financial leverage and reduced demand for the issuer's goods or services, as well as the historical and prospective earnings of the issuer and the value of its assets.

Large Capitalization Companies Risk
The securities of large market capitalization companies may underperform other segments of the market because such companies may be less responsive to competitive challenges and opportunities and may be unable to attain the high growth rates of successful smaller companies, especially during periods of economic expansion.

Leverage Risk
The Fund's use of futures, forward contracts, swaps and other derivative instruments and selling securities short will have the economic effect of financial leverage. Financial leverage magnifies the exposure to the swings in prices of an asset or class of assets underlying a derivative instrument and results in increased volatility, which means that the Fund will have the potential for greater losses than if the Fund does not use the derivative instruments that have a leveraging effect. Leverage may result in losses that exceed the amount originally invested and may accelerate the rate of losses. Leverage tends to magnify, sometimes significantly, the effect of any increase or decrease in the Fund's exposure to an asset or class of assets and may cause the Fund's net asset value ("NAV") to be volatile.

Liquidity Risk
The Fund is susceptible to the risk that certain investments held by the Fund, such as contracts for difference and total return swaps, may have limited marketability or be subject to restrictions on sale, and may be difficult or impossible to purchase or sell at favorable times or prices. The Fund could lose money if it is unable to dispose of an investment at a time that is most beneficial to the Fund. The Fund may be required to dispose of investments at unfavorable times or prices to satisfy obligations, which may result in losses or may be costly to the Fund. For example, the Fund may be forced to sell certain investments at unfavorable prices to meet redemption requests or other cash needs. Judgment plays a greater role in pricing illiquid investments than in investments with more active markets.

Market Direction Risk
Since the Fund will typically hold both long and short positions, an investment in the Fund will involve market risks associated with different types of investment decisions than those made for a typical "long only" fund. The Fund's results could suffer both when there is a general market advance and the Fund holds significant "short" positions, and when there is a general market decline and the Fund holds significant "long" positions.

Market Timing Risk
Because the Fund invests in foreign securities or it has exposure to foreign securities through the derivatives it holds, it is particularly subject to the risk of market timing activities. Frequent trading by Fund shareholders poses risks to other shareholders in the Fund, including (i) the dilution of the Fund's NAV, (ii) an increase in the Fund's expenses, and (iii) interference with the portfolio manager's ability to execute efficient investment strategies. Because of specific types of securities in which the Fund may invest, it could be subject to the risk of market timing activities by shareholders.

Market Risk
The Fund is subject to the risk that the securities markets will move down, sometimes rapidly and unpredictably based on overall economic conditions and other factors. The value of a security may decline due to general market conditions which are not specifically related to a particular company, such as real or perceived adverse economic conditions, changes in the general outlook for corporate earnings, changes in interest or currency rates or adverse investment sentiment generally. Changes in the financial condition of a single issuer can impact a market as a whole.

Model and Data Risk
The sub-advisor relies heavily on proprietary trading models ("Models") and both proprietary and external information and market data ("Data") to generate investment strategies, to estimate investment values and to identify specific trade recommendations. The sub-advisor also relies on Models and Data to identify and manage investment risk and to assist in determining appropriate hedging strategies that seek to reduce certain risks.

Models and Data may be extremely complex and may have errors, omissions, imperfections and malfunctions (collectively referred to as "System Events"). More complex Models and Data typically have a higher potential for System Events and may result in investment losses in the Fund. Additionally, investments in derivative securities may increase the risks associated with System Events.

Non-Diversification Risk
The Fund is non-diversified, which means the Fund may focus its investments in the securities of a comparatively small number of issuers. Investments in securities of a limited number of issuers exposes the Fund to greater market risk and potential losses than if assets were diversified among the securities of a greater number of issuers.

Other Investment Companies Risk
The Fund may invest in shares of other registered investment companies, including exchange-traded funds ("ETFs"). To the extent that the Fund invests in shares of other registered investment companies, you will indirectly bear fees and expenses charged by those investment companies in addition to the Fund's direct fees and expenses and will be subject to the risks associated with investments in those funds. For example, to the extent the Fund invests in ETFs that invest in equity securities, fixed income securities and/or foreign securities, or track an index, the Fund is subject to the risks associated with the underlying investments held by the ETF or the index fluctuations to which the ETF is subject. Because ETFs are listed on an exchange, they may be subject to trading halts, may trade at a premium or discount to their net asset value and may not be liquid.

Quantitative Strategy Risk
The success of the Fund's investment strategy may depend in part on the effectiveness of the sub-advisor's quantitative tools for screening securities. These strategies may incorporate factors that are not predictive of a security's value. Additionally, a previously successful strategy may become outdated or inaccurate, possibly resulting in losses.

Redemption Risk
The Fund may experience periods of high levels of redemptions that could cause the Fund to sell assets at inopportune times or at a loss or depressed value. The sale of assets to meet redemption requests may create net capital gains, which could cause the Fund to have to distribute substantial capital gains. Redemption risk is heightened during periods of declining or illiquid markets.

Risk of Programming and Modeling Error
The success of the sub-advisor's investment strategy depends largely on the effectiveness of its quantitative research models and investment programs. The programs may not react as expected to market events resulting in losses for the Fund. Additionally, programs may become outdated or experience malfunctions which may not be identified by the sub-advisor and therefore may also result in losses to the Fund.

Sector Risk
When the Fund focuses its investments in certain sectors of the economy, its performance may be driven largely by sector performance and could fluctuate more widely than if the Fund were invested more evenly across sectors.

Securities Selection Risk
Securities selected by the sub-advisor or the Manager for the Fund may not perform to expectations. The sub-advisor's investment models may rely in part on data derived from third parties and may not perform as intended. This could result in the Fund's underperformance compared to other funds with similar investment objectives.

Segregated Assets Risk
In connection with certain transactions that may give rise to future payment obligations, including short sales and investments in derivatives, the Fund may be required to maintain a segregated amount of, or otherwise earmark, cash or liquid securities to cover the obligation. Segregated assets cannot be sold while the position they are covering is outstanding unless they are replaced with other assets of equal value. The need to maintain cash or other liquid securities in segregated accounts could limit the Fund's ability to pursue other opportunities as they arise.

Short Position Risk
The Fund will incur a loss as a result of a short position if the price of the instrument sold short increases in value between the date of the short sale and the date on which an offsetting position is purchased. Short positions may be considered speculative transactions and involve special risks, including greater reliance on the sub-advisor's ability to accurately anticipate the future value of a security or instrument. The Fund's losses are potentially unlimited in a short position transaction because there is potentially no limit on the amount that the security that the Fund is required to purchase may have appreciated.

Small and Mid-Capitalization Companies Risk
Investing in the securities of small and mid-capitalization companies involves greater risk and the possibility of greater price volatility than investing in larger capitalization and more established companies. Since small and mid-capitalization companies may have limited operating history, product lines, and financial resources, the securities of these companies may lack sufficient market liquidity, and they can be particularly sensitive to expected changes in interest rates, borrowing costs and earnings. In general, these risks are greater for small-capitalization companies than for mid-capitalization companies.

U.S. Government Securities Risk
A security backed by the U.S. Treasury or the full faith and credit of the United States is guaranteed only as to the timely payment of interest and principal when held to maturity. The market prices for such securities are not guaranteed and will fluctuate.

Valuation Risk
The Fund may value certain assets at a price different from the price at which they can be sold. This risk may be especially pronounced for investments, such as certain derivatives, which may be illiquid or which may become illiquid.

Value Stocks Risk
Value stocks are subject to the risk that their intrinsic value may never be realized by the market or that their prices may decline. The Fund's investments in value stocks seek to limit potential downside price risk over time, however, value stock prices still may decline substantially. In addition, the Fund may produce more modest gains as a trade-off for this potentially lower risk. The Fund's investment in value stocks could cause the Fund to underperform funds that use a growth or non-value approach to investing or have a broader investment style.
Risk Nondiversified Status [Text] rr_RiskNondiversifiedStatus Non-Diversification Risk The Fund is non-diversified, which means the Fund may focus its investments in the securities of a comparatively small number of issuers. Investments in securities of a limited number of issuers exposes the Fund to greater market risk and potential losses than if assets were diversified among the securities of a greater number of issuers.
Risk Lose Money [Text] rr_RiskLoseMoney There is no assurance that the Fund will achieve its investment objective and you could lose part or all of your investment in the Fund.
Risk Not Insured Depository Institution [Text] rr_RiskNotInsuredDepositoryInstitution An investment in the Fund is not a deposit with a 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

Fund Performance

Performance Narrative [Text Block] rr_PerformanceNarrativeTextBlock

Performance information for the Fund is not provided because the Fund has not been in operation for a full calendar year. Performance for the Fund can be accessed on the Fund's website at www.americanbeaconfunds.com. Past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future.
Performance Past Does Not Indicate Future [Text] rr_PerformancePastDoesNotIndicateFuture Past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future.
Performance Availability Website Address [Text] rr_PerformanceAvailabilityWebSiteAddress www.americanbeaconfunds.com
(American Beacon Numeric Integrated Alpha Fund℠) | Class Y  
Prospectus: rr_ProspectusTable  
Maximum sales charge imposed on purchases (as a percentage of offering price) rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice none
Maximum deferred sales charge (as a percentage of the lower of original offering price or redemption proceeds) rr_MaximumDeferredSalesChargeOverOther none
Management Fees rr_ManagementFeesOverAssets 1.78%
Distribution (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets none
Other Expenses rr_OtherExpensesOverAssets 4.47% [16]
Component 1 Other Expenses Over Assets rr_Component1OtherExpensesOverAssets 1.35%
Broker Fees and Charges on Short Sales rr_Component2OtherExpensesOverAssets 2.76%
Remaining Other Expenses rr_Component3OtherExpensesOverAssets 0.36%
Acquired Fund Fees and Expenses rr_AcquiredFundFeesAndExpensesOverAssets 0.02% [16]
Total Annual Fund Operating Expenses rr_ExpensesOverAssets 6.27%
Fee Waiver and/or expense reimbursement rr_FeeWaiverOrReimbursementOverAssets (0.09%) [17]
Total Annual Fund Operating Expenses after fee waiver and/or expense reimbursement rr_NetExpensesOverAssets 6.18%
Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 $ 614
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 $ 1,838
(American Beacon Numeric Integrated Alpha Fund℠) | Institutional Class  
Prospectus: rr_ProspectusTable  
Maximum sales charge imposed on purchases (as a percentage of offering price) rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice none
Maximum deferred sales charge (as a percentage of the lower of original offering price or redemption proceeds) rr_MaximumDeferredSalesChargeOverOther none
Management Fees rr_ManagementFeesOverAssets 1.78%
Distribution (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets none
Other Expenses rr_OtherExpensesOverAssets 4.37% [16]
Component 1 Other Expenses Over Assets rr_Component1OtherExpensesOverAssets 1.35%
Broker Fees and Charges on Short Sales rr_Component2OtherExpensesOverAssets 2.76%
Remaining Other Expenses rr_Component3OtherExpensesOverAssets 0.26%
Acquired Fund Fees and Expenses rr_AcquiredFundFeesAndExpensesOverAssets 0.02% [16]
Total Annual Fund Operating Expenses rr_ExpensesOverAssets 6.17%
Fee Waiver and/or expense reimbursement rr_FeeWaiverOrReimbursementOverAssets (0.09%) [17]
Total Annual Fund Operating Expenses after fee waiver and/or expense reimbursement rr_NetExpensesOverAssets 6.08%
Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 $ 605
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 $ 1,812
(American Beacon Numeric Integrated Alpha Fund℠) | Investor Class  
Prospectus: rr_ProspectusTable  
Maximum sales charge imposed on purchases (as a percentage of offering price) rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice none
Maximum deferred sales charge (as a percentage of the lower of original offering price or redemption proceeds) rr_MaximumDeferredSalesChargeOverOther none
Management Fees rr_ManagementFeesOverAssets 1.78%
Distribution (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets none
Other Expenses rr_OtherExpensesOverAssets 4.75% [16]
Component 1 Other Expenses Over Assets rr_Component1OtherExpensesOverAssets 1.35%
Broker Fees and Charges on Short Sales rr_Component2OtherExpensesOverAssets 2.76%
Remaining Other Expenses rr_Component3OtherExpensesOverAssets 0.64%
Acquired Fund Fees and Expenses rr_AcquiredFundFeesAndExpensesOverAssets 0.02% [16]
Total Annual Fund Operating Expenses rr_ExpensesOverAssets 6.55%
Fee Waiver and/or expense reimbursement rr_FeeWaiverOrReimbursementOverAssets (0.09%) [17]
Total Annual Fund Operating Expenses after fee waiver and/or expense reimbursement rr_NetExpensesOverAssets 6.46%
Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 $ 641
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 $ 1,912
(American Beacon Numeric Integrated Alpha Fund℠) | Ultra Class  
Prospectus: rr_ProspectusTable  
Maximum sales charge imposed on purchases (as a percentage of offering price) rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice none
Maximum deferred sales charge (as a percentage of the lower of original offering price or redemption proceeds) rr_MaximumDeferredSalesChargeOverOther none
Management Fees rr_ManagementFeesOverAssets 1.78%
Distribution (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets none
Other Expenses rr_OtherExpensesOverAssets 4.27% [16]
Component 1 Other Expenses Over Assets rr_Component1OtherExpensesOverAssets 1.35%
Broker Fees and Charges on Short Sales rr_Component2OtherExpensesOverAssets 2.76%
Remaining Other Expenses rr_Component3OtherExpensesOverAssets 0.16%
Acquired Fund Fees and Expenses rr_AcquiredFundFeesAndExpensesOverAssets 0.02% [16]
Total Annual Fund Operating Expenses rr_ExpensesOverAssets 6.07%
Fee Waiver and/or expense reimbursement rr_FeeWaiverOrReimbursementOverAssets (0.09%) [17]
Total Annual Fund Operating Expenses after fee waiver and/or expense reimbursement rr_NetExpensesOverAssets 5.98%
Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 $ 594
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 $ 1,779
[1] A contingent deferred sales charge (''CDSC'') of 0.50% will be charged on certain purchases of $1,000,000 or more of A Class shares that are redeemed in whole or part within 18 months of purchase.
[2] The Total Annual Fund Operating Expenses do not correlate to the ratio of expenses to average net assets provided in the Fund's Financial Highlights table, which reflects the operating expenses of the Fund and does not include Acquired Fund Fees and Expenses.
[3] The Manager has contractually agreed to waive fees and/or reimburse expenses of the Fund's A Class, C Class, Y Class, Institutional Class and Investor Class shares, as applicable, through May 31, 2018 to the extent that Total Annual Fund Operating Expenses exceed 1.75% for the A Class, 2.50% for the C Class, 1.45% for the Y Class, 1.35% for the Institutional Class and 1.73% for the Investor Class (excluding taxes, interest, brokerage commissions, acquired fund fees and expenses, securities lending fees, expenses associated with securities sold short, litigation, and other extraordinary expenses). The contractual expense reimbursement can be changed or terminated only in the discretion and with the approval of a majority of the Fund's Board of Trustees. The Manager can be reimbursed by the Fund for any contractual fee waivers or expense reimbursements if reimbursement to the Manager (a) occurs within three years after the Manager's own waiver or reimbursement and (b) does not cause the Total Annual Fund Operating Expenses of a class to exceed the lesser of the contractual percentage limit in effect at the time of the waiver/reimbursement or the time of recoupment.
[4] A contingent deferred sales charge ("CDSC") of 0.50% will be charged on certain purchases of $250,000 or more of A Class shares that are redeemed in whole or part within 18 months of purchase.
[5] The Manager has contractually agreed to waive fees and/or reimburse expenses of the Fund's A Class, C Class, Y Class, Institutional Class and Investor Class shares, as applicable, through May 31, 2018 to the extent that Total Annual Fund Operating Expenses exceed 1.25% for the A Class, 2.00% for the C Class, 0.95% for the Y Class, 0.85% for the Institutional Class and 1.23% for the Investor Class (excluding taxes, interest, brokerage commissions, acquired fund fees and expenses, securities lending fees, expenses associated with securities sold short, litigation, and other extraordinary expenses). The contractual expense reimbursement can be changed or terminated only in the discretion and with the approval of a majority of the Fund's Board of Trustees. The Manager can be reimbursed by the Fund for any contractual fee waivers or expense reimbursements if reimbursement to the Manager (a) occurs within three years after the Manager's own waiver or reimbursement and (b) does not cause the Total Annual Fund Operating Expenses of a class to exceed the lesser of the contractual percentage limit in effect at the time of the waiver/reimbursement or the time of recoupment.
[6] The Manager has contractually agreed to waive fees and/or reimburse expenses of the Fund's A Class, C Class, Y Class, Institutional Class and Investor Class shares, as applicable, through May 31, 2018 to the extent that Total Annual Fund Operating Expenses exceed 1.38% for the A Class, 2.13% for the C Class, 1.08% for the Y Class, 0.98% for the Institutional Class and 1.36% for the Investor Class (excluding taxes, interest, brokerage commissions, acquired fund fees and expenses, securities lending fees, expenses associated with securities sold short, litigation, and other extraordinary expenses). The contractual expense reimbursement can be changed or terminated only in the discretion and with the approval of a majority of the Fund's Board of Trustees. The Manager can be reimbursed by the Fund for any contractual fee waivers or expense reimbursements if reimbursement to the Manager (a) occurs within three years after the Manager's own waiver or reimbursement and (b) does not cause the Total Annual Fund Operating Expenses of a class to exceed the lesser of the contractual percentage limit in effect at the time of the waiver/reimbursement or the time of recoupment.
[7] A contingent deferred sales charge (''CDSC'') of 0.50% will be charged on certain purchases of $1,000,000 or more of A Class shares that are redeemed in whole or part within 18 months of purchase.
[8] The Total Annual Fund Operating Expenses do not correlate to the ratio of expenses to average net assets provided in the Fund's Financial Highlights table, which reflects the operating expenses of the Fund and does not include Acquired Fund Fees and Expenses.
[9] The Manager has contractually agreed to waive fees and/or reimburse expenses of the Fund's A Class, C Class, Y Class, Institutional Class, Investor Class and Ultra Class shares, as applicable, through May 31, 2018 to the extent that Total Annual Fund Operating Expenses exceed 1.45% for the A Class, 2.20% for the C Class, 1.15% for the Y Class, 1.05% for the Institutional Class, 1.43% for the Investor Class and 0.95% for the Ultra Class (excluding taxes, interest, brokerage commissions, acquired fund fees and expenses, securities lending fees, expenses associated with securities sold short, litigation, and other extraordinary expenses). The contractual expense reimbursement can be changed or terminated only in the discretion and with the approval of a majority of the Fund's Board of Trustees. The Manager can be reimbursed by the Fund for any contractual fee waivers or expense reimbursements if reimbursement to the Manager (a) occurs within three years after the Manager's own waiver or reimbursement and (b) does not cause the Total Annual Fund Operating Expenses of a class to exceed the lesser of the contractual percentage limit in effect at the time of the waiver/reimbursement or the time of the recoupment.
[10] A contingent deferred sales charge (''CDSC'') of 0.50% will be charged on certain purchases of $1,000,000 or more of A Class shares that are redeemed in whole or part within 18 months of purchase.
[11] The Total Annual Fund Operating Expenses do not correlate to the ratio of expenses to average net assets provided in the Fund's Financial Highlights table, which reflects the operating expenses of the Fund and does not include Acquired Fund Fees and Expenses.
[12] The Manager has contractually agreed to waive fees and/or reimburse expenses of the Fund's A Class, C Class, Y Class, Institutional Class and Investor Class shares, as applicable, through May 31, 2018 to the extent that Total Annual Fund Operating Expenses exceed 1.55% for the A Class, 2.30% for the C Class, 1.25% for the Y Class, 1.15% for the Institutional Class and 1.53% for the Investor Class (excluding taxes, interest, brokerage commissions, acquired fund fees and expenses, securities lending fees, expenses associated with securities sold short, litigation, and other extraordinary expenses). The contractual expense reimbursement can be changed or terminated only in the discretion and with the approval of a majority of the Fund's Board of Trustees. The Manager can be reimbursed by the Fund for any contractual fee waivers or expense reimbursements if reimbursement to the Manager (a) occurs within three years after the Manager's own waiver or reimbursement and (b) does not cause the Total Annual Fund Operating Expenses of a class to exceed the lesser of the contractual percentage limit in effect at the time of the waiver/reimbursement or the time of recoupment.
[13] A contingent deferred sales charge (''CDSC'') of 0.50% will be charged on certain purchases of $1,000,000 or more of A Class shares that are redeemed in whole or part within 18 months of purchase.
[14] The Total Annual Fund Operating Expenses do not correlate to the ratio of expenses to average net assets provided in the Fund's Financial Highlights table, which reflects the operating expenses of the Fund and does not include Acquired Fund Fees and Expenses.
[15] The Manager has contractually agreed to waive fees and/or reimburse expenses of the Fund's A Class, C Class, Y Class, Institutional Class and Investor Class shares, as applicable, through May 31, 2018 to the extent that Total Annual Fund Operating Expenses exceed 2.50% for the A Class, 3.25% for the C Class, 2.20% for the Y Class, 2.10% for the Institutional Class and 2.48% for the Investor Class (excluding taxes, interest, brokerage commissions, acquired fund fees and expenses, securities lending fees, expenses associated with securities sold short, litigation, and other extraordinary expenses). The contractual expense reimbursement can be changed or terminated only in the discretion and with the approval of a majority of the Fund's Board of Trustees. The Manager can be reimbursed by the Fund for any contractual fee waivers or expense reimbursements if reimbursement to the Manager (a) occurs within three years after the Manager's own waiver or reimbursement and (b) does not cause the Total Annual Fund Operating Expenses of a class to exceed the lesser of the contractual percentage limit in effect at the time of the waiver/reimbursement or the time of recoupment.
[16] Other Expenses and Acquired Fund Fees and Expenses are based on estimated expenses for the current fiscal year.
[17] The Manager has contractually agreed to waive fees and/or reimburse expenses of the Fund's Y Class, Institutional Class, Investor Class and Ultra Class shares, as applicable, through May 31, 2018, to the extent that Total Annual Fund Operating Expenses exceed 2.05% for the Y Class, 1.95% for the Institutional Class, 2.33% for the Investor Class and 1.85% for the Ultra Class (excluding taxes, interest, brokerage commissions, acquired fund fees and expenses, securities lending fees, expenses associated with securities sold short, litigation, and other extraordinary expenses). The contractual expense reimbursement can be changed or terminated only in the discretion and with the approval of a majority of the Fund's Board of Trustees. The Manager can be reimbursed by the Fund for any contractual fee waivers or expense reimbursements if reimbursement to the Manager (a) occurs within three years after the Manager's own waiver or reimbursement and (b) does not cause the Total Annual Fund Operating Expenses of a class to exceed the lesser of the contractual percentage limit in effect at the time of the waiver/reimbursement or the time of the recoupment.