Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price)

rr_ProspectusTable

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

3.75%

rr_MaximumDeferredSalesChargeOverOther

0.50%

^[1]

rr_ManagementFeesOverAssets

0.55%

rr_DistributionAndService12b1FeesOverAssets

0.25%

rr_OtherExpensesOverAssets

0.83%

^[2]

rr_ExpensesOverAssets

1.63%

Total Annual Fund Operating Expenses After Expense Reimbursement

rr_FeeWaiverOrReimbursementOverAssets

(0.85%)

^[3]

rr_NetExpensesOverAssets

0.78%

rr_ExpenseExampleYear01

$ 452

(American Beacon NIS Core Plus Bond Fund - Classes A, C, Y and R6) | (American Beacon NIS Core Plus Bond Fund℠) | C Class

rr_ExpenseExampleYear03

$ 790

Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price)

rr_ProspectusTable

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

none

rr_MaximumDeferredSalesChargeOverOther

1.00%

rr_ManagementFeesOverAssets

0.55%

rr_DistributionAndService12b1FeesOverAssets

1.00%

rr_OtherExpensesOverAssets

0.83%

^[2]

rr_ExpensesOverAssets

2.38%

Total Annual Fund Operating Expenses After Expense Reimbursement

rr_FeeWaiverOrReimbursementOverAssets

(0.85%)

^[3]

rr_NetExpensesOverAssets

1.53%

rr_ExpenseExampleYear01

$ 256

Expense Example, No Redemption, 1 Year

rr_ExpenseExampleYear03

661

rr_ExpenseExampleNoRedemptionYear01

156

Expense Example, No Redemption, 3 Years

rr_ExpenseExampleNoRedemptionYear03

$ 661

(American Beacon NIS Core Plus Bond Fund - Classes A, C, Y and R6) | (American Beacon NIS Core Plus Bond Fund℠) | Y Class

Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price)

rr_ProspectusTable

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

none

rr_MaximumDeferredSalesChargeOverOther

none

rr_ManagementFeesOverAssets

0.55%

rr_DistributionAndService12b1FeesOverAssets

none

rr_OtherExpensesOverAssets

0.83%

^[2]

rr_ExpensesOverAssets

1.38%

Total Annual Fund Operating Expenses After Expense Reimbursement

rr_FeeWaiverOrReimbursementOverAssets

(0.85%)

^[3]

rr_NetExpensesOverAssets

0.53%

rr_ExpenseExampleYear01

$ 54

(American Beacon NIS Core Plus Bond Fund - Classes A, C, Y and R6) | (American Beacon NIS Core Plus Bond Fund℠) | R6 Class

rr_ExpenseExampleYear03

$ 353

Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price)

rr_ProspectusTable

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

none

rr_MaximumDeferredSalesChargeOverOther

none

rr_ManagementFeesOverAssets

0.55%

rr_DistributionAndService12b1FeesOverAssets

none

rr_OtherExpensesOverAssets

0.73%

^[2]

rr_ExpensesOverAssets

1.28%

Total Annual Fund Operating Expenses After Expense Reimbursement

rr_FeeWaiverOrReimbursementOverAssets

(0.85%)

^[3]

rr_NetExpensesOverAssets

0.43%

rr_ExpenseExampleYear01

$ 44

(American Beacon Frontier Markets Income Fund - Classes A, C, Y, R5 and Investor) | (American Beacon Frontier Markets Income Fund℠)

rr_ExpenseExampleYear03

$ 322

Objective, Primary [Text Block]

rr_ProspectusTable

Objective [Heading]

rr_ObjectiveHeading

Investment Objective

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, hold, and sell shares of the Fund. You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in the tables and examples below. 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 26 of the Prospectus and “Additional Purchase and Sale Information for A Class Shares” on page 45 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, Waivers and Other Information.” Although the Fund does not impose any sales charge on Y Class shares, you may pay a commission to your broker on your purchases and sales of those shares, which is not reflected in the tables or Example below.

Expense Breakpoint Discounts [Text]

rr_ExpenseBreakpointDiscounts

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)

Expenses Deferred Charges [Text Block]

rr_ExpensesDeferredChargesTextBlock

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. 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 54% of the average value of its portfolio.

Portfolio Turnover, Rate

rr_PortfolioTurnoverRate

54.00%

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, debentures, 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 be issued by special purpose vehicles (“SPVs”)), swaps, options, futures and forward contracts, warrants (including sovereign warrants), and contracts for difference. The Fund may invest in callable securities, municipal securities, inflation index-linked securities, illiquid securities, restricted securities, and variable and floating-rate securities. The Fund may also invest in debt instruments issued by corporations that are economically tied to frontier market countries and in obligations of supranational entities. All such investments may be denominated in foreign (non-U.S.) currencies.

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, the 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-advisors may invest in any countries that they reasonably determine to be classified as frontier market countries. In making investment decisions for the Fund, one of the Fund’s sub-advisors, Global Evolution USA, LLC, employs a top-down investment process that focuses on macroeconomic and political risk, as well as country risk, while the Fund’s other sub-advisor, Aberdeen Asset Managers Limited, employs a bottom-up investment process that applies fundamental research to countries and companies in selecting investments. Each sub-advisor incorporates environmental, social, and governance (“ESG”) information as an integral part of the research and investment processes. Each sub-advisor utilizes proprietary and/or third-party research and ratings information in considering ESG information and ESG risks. As with any consideration used in assessing portfolio securities, the sub-advisors may, at times, utilize ESG information to increase the weighting of an issuer with a good ESG record and/or decrease the weighting of an issuer with a poor ESG record. ESG information is just one investment consideration used by each sub-advisor in making investment decisions and is not solely determinative in any investment decisions made by a sub-advisor. Each sub-advisor’s investment process includes monitoring of investment guidelines, individual trades, investment strategies, and general portfolio risk.

The Fund’s investments in derivatives may include structured products, including credit-linked and structured notes, options, warrants (including sovereign warrants), futures contracts, including interest rate and Treasury futures contracts, forward contracts (including non-deliverable forwards (“NDFs”)), swaps, contracts for difference and similar instruments. The types of swaps that the Fund may enter into include credit default swaps, cross currency swaps, interest rate swaps, total return 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 Fund 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’s exposure to a single counterparty.

The Fund also may have significant exposure to foreign currencies for investment or hedging purposes by purchasing or selling foreign currency forward contracts (including NDFs), non-U.S. currency futures contracts, options on non-U.S. currencies and on non-U.S. currency futures, and swaps for cross-currency transactions. 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 Ratings 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 government 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 objectives 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 listed

below are presented in alphabetical order and not in order of importance or potential exposure. Among other matters, this presentation is intended to facilitate your ability to find particular risks and compare them with the risks of other funds. Each risk summarized below is considered a “principal risk” of investing in the Fund, regardless of the order in which it appears.

Allocation Risk
The Manager’s and a sub-advisor’s judgments about, and allocations among, strategies, 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 Manager’s and a sub-advisor’s judgments about asset allocation will be correct. 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, may fail, or become less able, to make timely payment of interest or principal or otherwise honor its obligations or default completely. Changes in the actual or perceived creditworthiness of an issuer, or 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 using various instruments described below. Foreign currencies may fluctuate significantly over short periods of time, may be affected unpredictably by intervention, or the failure to intervene, of the U.S. or foreign governments or central banks, and may be affected by currency controls or political developments in the U.S. or abroad. Foreign currencies may also decline in value relative to the U.S. dollar and other currencies and thereby affect the Fund’s investments in non-U.S. currencies or in securities that trade in, and receive revenues in, or in derivatives that provide exposure to, non-U.S. currencies. The Fund may gain exposure to foreign currencies because of its investments in one or more of the following:

■	Non-U.S. currencies

■	Securities denominated in non-U.S. currencies

■	Foreign currency forward contracts, including non-deliverable forwards (“NDFs”), which are described below under “Derivatives Risk”

■	Non-U.S. currency futures contracts, which are described below under “Derivatives Risk”

■	Options on non-U.S. currencies and non-U.S. currency futures, which are described below under “Derivatives Risk”

■	Swaps for cross-currency transactions, which are described below under “Derivatives Risk”

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 at times be illiquid, and the Fund may not be able to close out or sell a derivative at a particular time or at an anticipated price. Certain derivatives may be difficult to value, and valuation may be more difficult in times of market turmoil. Derivatives may also be more volatile than other types of investments. The Fund may buy or sell derivatives not traded on an exchange, 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 not recover 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. Ongoing changes to the regulation of the derivatives markets and potential changes in the regulation of funds using derivative instruments could limit the Fund’s ability to pursue its investment strategies. New regulation of derivatives may make them more costly, or may otherwise adversely affect their liquidity, value or performance. In addition, the Fund’s investments in derivatives are subject to the following risks:

■

Contracts for Difference Risk. 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. As over-the-counter derivative instruments, CFDs are subject to counterparty risk. Because CFDs are not traded on an exchange and may not have an expiration date, CFDs may be illiquid.

■

Credit-Linked Notes Risk. 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. In the event the issuer defaults or there is a credit event that relates to the reference asset, the recovery rate generally is less than the Fund’s initial investment, and the Fund may lose money. They also are subject to currency risk, liquidity risk, valuation risk, counterparty risk, the other risks of a credit default swap, and potential conflicts of interest with the CLN issuer or sponsor.

■

Foreign Currency Forward Contracts Risk. Foreign currency forward contracts, including non-deliverable forwards (“NDFs”), are derivative instruments pursuant to a contract where the parties agree to a fixed price for an agreed amount of foreign currency 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. Forward currency transactions, including NDFs, and forward currency contracts include the risks associated with fluctuations in currency, and other risks inherent in trading derivatives. The use of foreign currency forward contracts may expose the Fund to additional risks, such as credit risk, liquidity risk, and counterparty risk, that it would not be subject to if it invested directly in the securities or currencies underlying the foreign currency forward contract.

■

Forward Contracts Risk. Forward contracts, including non-deliverable forwards (“NDFS”), are derivative instruments pursuant to a contract where the parties agree to 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 are no limitations on daily price movements of forward contracts. 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. The use of forward contracts may expose the Fund to additional risks, such as credit risk, liquidity risk, and counterparty risk, that it would not be subject to if it invested directly in the securities underlying the forward contract.

■

Futures Contracts Risk. Futures contracts are derivative instruments pursuant to a contract where the parties agree to 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, such as credit risk, liquidity risk, and counterparty risk, that it would not be subject to if it invested directly in the securities underlying those derivatives. There can be no assurance that any strategy used will succeed. There may at times be an imperfect correlation between the movement in the prices of futures contracts and the value of their underlying instruments or indexes. There also can be no assurance that, at all times, a liquid market will exist for offsetting a futures contract that the Fund has previously bought or sold, and this may result in the inability to close a futures contract when desired. Futures contracts may experience potentially dramatic price changes, 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). Interest rate 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. Treasury futures contracts expose the Fund to price fluctuations resulting from changes in interest rates and to potential losses if interest rates do not move as expected.

■

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. In addition, hedges, even when successful in mitigating risk, may not prevent the Fund from experiencing losses on its investments. Hedging instruments may also reduce or eliminate gains that may otherwise have been available had the Fund not used the hedging instruments.

■

Options Risk. An option is a contract that gives the purchaser (holder) of the option, in return for a premium, the right to buy from (call) or sell to (put) the seller (writer) of the option the security or currency underlying the option at a specified exercise price at any time during the term of the option (normally not exceeding nine months). There can be no guarantee that the use of options will increase the Fund’s return or income. In addition, there may be an imperfect correlation between the movement in prices of options and the securities underlying them, and there may at times not be a liquid secondary market for options. If an option that the Fund has purchased expires unexercised, the Fund will experience a loss in the amount of the premium it paid. In order for a call option to be profitable, the market price of the underlying security or index must rise sufficiently above the call option exercise price to cover the premium and any 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. If the Fund sells (writes) 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. In order for a put option to be profitable, the market price of the underlying security or index must decline sufficiently below the put option’s exercise price to cover the premium and any 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 (writes) a put option, there is a risk that the Fund may be required to buy the underlying asset at a disadvantageous price. By writing put options, the Fund takes on the risk of declines in the value of the underlying instrument, including the possibility of a loss up to the entire strike price of each option it sells, but without the corresponding opportunity to benefit from potential increases in the value of the underlying instrument. If there is a broad market decline and the Fund is not able to close out its written put options, it may result in substantial losses to the Fund.

■

Structured Notes Risk. Structured notes are derivative debt instruments with principal and/or interest payments linked to the value of a commodity, a foreign currency, an index of securities, an interest rate, or other financial indicators (“reference instruments”). The payments on a structured note may vary based on changes in one or more specified reference instruments, such as a floating interest rate compared to a fixed interest rate, the exchange rates between two currencies, one or more securities or a securities or commodities index. If the underlying investment or index does not perform as anticipated, the structured note might pay less interest than the stated coupon payment or repay less principal upon maturity. The movement of such factors may cause significant price fluctuations. A structured note may be positively or negatively indexed. Structured notes are subject to interest rate risk, market risk, liquidity risk and counterparty risk. They are also subject to credit risk with respect both to the issuer and, if applicable, to the underlying security or borrower. Structured notes may have a limited trading market, making it difficult to value them or sell them at an acceptable price.

■

Swap Agreements Risk. Swap agreements or “swaps” are transactions in which the Fund and a counterparty agree to pay or receive payments at specified dates based upon or calculated by reference to changes in specified prices or rates or the performance of specified securities, indices or other assets based on a specified amount (the “notional” amount). 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. Swaps may be subject to liquidity risk and counterparty risk, and swaps that are traded over-the-counter are not subject to standardized clearing requirements and may involve greater liquidity and counterparty risks. The Fund may invest in the following types of swaps:

Credit default swaps, which may be subject to credit risk and the risks associated with the purchase and sale of credit protection.

Cross-currency swaps, which may be subject to currency risk and credit risk.

Interest rate swaps, which may be subject to interest rate risk and credit risk.

Total return swaps, which may be subject to credit risk and, if the underlying securities are bonds or other debt obligations, market risk and interest rate risk.

■

Warrants Risk, Including Sovereign Warrants. Warrants are derivative securities that give the holder the right to purchase a specified amount of securities at a specified price. 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 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 or economic 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 other restrictions on investment; delays and disruptions in securities settlement procedures; and significant limitations on investor rights and recourse. The governments of emerging market countries may also be more unstable and more likely to impose capital controls, nationalize a company or industry, place restrictions on foreign ownership and on withdrawing sale proceeds of securities from the country, intervene in the financial markets, and/or impose burdensome taxes that could adversely affect security prices. In addition, there may be less publicly available information about issuers in emerging markets than would be available about issuers in more developed capital markets, and such issuers may not be subject to accounting, auditing, financial reporting and recordkeeping standards and requirements comparable to those to which U.S. companies are subject.

Environmental, Social, and/or Governance Investing Risk
The Fund’s incorporation of environmental, social and/or governance (“ESG”) considerations in its investment strategy may cause it to make different investments than funds that have a similar investment style but do not incorporate such considerations in their strategy. As with the use of any investment considerations involved in investment decisions, there is no guarantee that the ESG investment considerations used by the Fund will result in the selection of issuers that will outperform other issuers or help reduce risk in the Fund. The Fund may underperform funds that do not incorporate these considerations.

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. The magnification of risks is the result of: (1) the potential for extreme price volatility and illiquidity in frontier markets; (2) government ownership or control of parts of the private sector or other protectionist measures; (3) large currency fluctuations; (4) fewer companies and investment opportunities; or (5) inadequate investor protections and regulatory enforcement. Investments that the Fund holds may be exposed to these risks, which could have a negative impact on their value.

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 principal payments and interest payments that vary as the principal and/or interest are adjusted over time to reflect a rise or a drop in the reference inflation-related index. For inflation index-linked debt securities for which repayment of the original principal upon maturity (as adjusted for inflation) is not guaranteed, the adjusted principal value of the securities repaid at maturity may be less than the original principal value. The value of inflation index-linked securities is expected to change in response to real interest rates. The price of an inflation index-linked security generally falls when real interest rates rise and rises when real interest rates fall. Because the interest and/or principal payments on an inflation index-linked security are adjusted periodically for changes in inflation, the income distributed by the Fund may be irregular. In periods of deflation, the Fund may have no income at all from such investments. The principal value of an investment in the Fund is not protected or otherwise guaranteed by the value of the Fund’s investments in inflation index-linked securities.

Interest Rate Risk
Generally, the value of investments with interest rate risk, such as fixed income securities or derivatives, will move in the opposite direction to movements in interest rates. 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 four years, a 1% increase in interest rates could be expected to result in a 4% decrease in the value of the bond. An increase in interest rates can impact markets broadly as well. As of the date of this Prospectus, interest rates are at or near historic lows. Extremely low or negative interest rates may become more prevalent among U.S. and foreign issuers. To the extent the Fund holds an investment with a negative interest rate to maturity, the Fund may generate a negative return on that investment. Conversely, in the future, interest rates may rise, perhaps significantly and/or rapidly, potentially resulting in substantial losses to the Fund.

Leverage Risk
The Fund’s use of derivative instruments may have the economic effect of financial leverage. Financial leverage magnifies the Fund’s exposure to the movements in prices of an asset or class of assets underlying a derivative instrument and may result 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”) per share to be volatile. There can be no assurance that the Fund’s use of leverage will be successful.

LIBOR Risk
Certain of the instruments identified in the Fund’s principal investment strategies have variable or floating coupon rates that are based on the ICE LIBOR (“LIBOR”), Euro Interbank Offered Rate and other similar types of reference rates (each, a “Reference Rate”). These Reference Rates are generally intended to represent the rate at which contributing banks may obtain short-term borrowings from each other within certain financial markets. Arrangements are underway to phase out the use of LIBOR in the future. These arrangements and any additional regulatory or market changes may have an adverse impact on the Fund or its investments, including increased volatility or illiquidity in markets for instruments that rely on LIBOR. There remains uncertainty regarding the nature of any replacement rate and the impact of the transition from LIBOR on the Fund and the financial markets generally. The transition process, or the failure of an industry to transition, could lead to increased volatility and illiquidity in markets for instruments that currently rely on LIBOR to determine interest rates and a reduction in the values of some LIBOR-based investments, all of which would impact the Fund. At this time, it is not possible to completely identify or predict the effect of any transition, establishment of alternative Reference Rates or other reforms to Reference Rates that may be enacted in the UK or elsewhere. In addition, any substitute Reference Rate and any pricing adjustments imposed by a regulator or by counterparties or otherwise may adversely affect the Fund’s performance and/or NAV.

■

Recent Market Events. An outbreak of infectious respiratory illness caused by a novel coronavirus, known as COVID-19, was first detected in December 2019 and has subsequently spread globally. The transmission of COVID-19 and efforts to contain its spread have resulted, and may continue to result, in significant disruptions to business operations, widespread business closures and layoffs, travel restrictions and closed borders, prolonged quarantines and stay-at-home orders, disruption of and delays in healthcare service preparation and delivery, service and event changes, and lower consumer demand, as well as general concern and uncertainty that has negatively affected the global economy. The impact of the COVID-19 pandemic may last for an extended period of time and may result in a sustained economic downturn or recession. The U.S. Federal Reserve and the U.S. federal government have taken numerous measures to address the economic impact of the COVID-19 pandemic and stimulate the U.S. economy. The ultimate effects of these and other efforts that may be taken may not be known for some time.

The Federal Reserve has spent hundreds of billions of dollars to keep credit flowing through short-term money markets and has signaled that it plans to maintain its interventions at an elevated level. Amid these ongoing efforts, concerns about the markets’ dependence on the Federal Reserve’s provision of liquidity have grown. Future legislative, regulatory and policy changes may result in more restrictions on international trade, less stringent prudential regulation of certain players in the financial markets, and significant new investments in infrastructure and national defense. High public debt in the U.S. and other countries creates ongoing systemic and market risks and policymaking uncertainty. A rise in protectionist trade policies, slowing global economic growth, risks associated with the United Kingdom’s departure from the European Union on December 31, 2020, commonly referred to as “Brexit,” and a trade agreement between the United Kingdom and the European Union, the risks associated with ongoing trade negotiations with China, the possibility of changes to some international trade agreements, tensions or open conflict between nations, or political or economic dysfunction within some nations that are major producers of oil could affect the economies of many nations, including the United States, in ways that cannot necessarily be foreseen at the present time.

Economists and others have expressed increasing concern about the potential effects of global climate change on property and security values. Certain issuers, industries and regions may be adversely affected by the impacts of climate change, including on the demand for and the development of goods and services and related production costs, and the impacts of legislation, regulation and international accords related to climate change, as well as any indirect consequences of regulation or business trends driven by climate change.

Market Timing Risk
The Fund is subject to the risk of market timing activities by investors due to the Fund’s investments in high-yield and foreign securities, or its exposure to high-yield and foreign securities through the derivatives it holds. The limited trading activity of some high-yield securities may result in market prices that do not reflect the true market value of these securities. If the Fund trades foreign securities, it generally prices these foreign securities using their closing prices from the foreign markets in which they trade, which typically is prior to the Fund’s calculation of its net asset value (“NAV”). These prices may be affected by events that occur after the close of a foreign market but before the Fund prices its shares. As a result, the Fund in certain instances may fair value high-yield and foreign securities. However, some investors may engage in frequent short-term trading in the Fund to take advantage of any price differentials that may be reflected in the NAV of the Fund’s shares. 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 managers’ ability to execute efficient investment strategies. While the Manager monitors trading in the Fund, there is no guarantee that it can detect all market timing activities.

Multiple Sub-Advisor Risk
The Manager may allocate the Fund’s assets among multiple sub-advisors, each of which is responsible for investing its allocated portion of the Fund’s assets. To a significant extent, the Fund’s performance will depend on the success of the Manager in selecting and overseeing the sub-advisors and allocating the Fund’s assets to sub-advisors. The sub-advisors’ investment styles may not work together as planned, which could adversely affect the performance of the Fund. In addition, because each sub-advisor makes its trading decisions independently, it is possible that the sub-advisors may purchase or sell the same security at the same time without aggregating their transactions. This may cause unnecessary brokerage and other expenses.

■	Government Money Market Funds. Investments in government money market funds are subject to interest rate risk, credit risk, and market risk.

Restricted Securities Risk
Securities not registered in the U.S. under the Securities Act of 1933, as amended (the “Securities Act”), or in non-U.S. markets pursuant to similar regulations, including “Section 4(a)(2)” securities and “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. The prices of these securities may be more difficult to determine than publicly traded securities and these securities may involve heightened risk as compared to investments in securities of publicly traded companies. 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 a 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.

Securities Selection Risk
Securities selected by a sub-advisor 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 a sub-advisor. This could result in the Fund’s underperformance compared to its benchmark index(es), or other funds with similar investment objectives or strategies.

Segregated Assets Risk
In connection with certain transactions that may give rise to future payment obligations, the Fund may be required to maintain a segregated amount of, or otherwise earmark, cash or liquid securities to cover the obligation. Segregated assets generally cannot be sold while the position they are covering is outstanding, unless they are replaced with other assets of equal value. The need to segregate cash or other liquid securities 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. Sovereign or quasi-sovereign debt securities are subject to risk of payment delays or defaults due to, among other things: (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 repay loans, may request 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

frontier and emerging markets issuers, which are among the largest debtors to commercial banks and foreign governments. At times, certain frontier and emerging market countries have declared moratoria on the payment of principal and interest on external debt. Certain frontier and 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. Political changes in principal donor nations may also unexpectedly disrupt the finances of supranational entities. 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, a sub-advisor, after assessing their credit quality, may internally assign ratings to certain of those securities in categories similar to those of rating organizations. Unrated securities are subject to the risk that a sub-advisor may not accurately evaluate the security’s comparative credit rating. 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.

Variable and Floating Rate Securities Risk
The coupons on variable and floating-rate securities are not fixed and may fluctuate based upon changes in market rates. A variable rate security has a coupon that is adjusted at pre-designated periods in response to changes in the market rate of interest on which the coupon is based. The coupon on a floating rate security is generally based on an interest rate, such as a money-market index, LIBOR or a Treasury bill rate. Variable and floating rate securities are subject to interest rate risk and credit risk. As short-term interest rates decline, the coupons on variable and floating-rate securities typically decrease. Alternatively, during periods of rising short-term interest rates, the coupons on variable and floating-rate securities typically increase. Changes in the coupons of variable and floating-rate securities may lag behind changes in market rates or may have limits on the maximum increases in the coupon rates. The value of variable and floating-rate securities may decline if their coupons do not rise as much, or as quickly, as interest rates in general. Conversely, variable and floating rate securities will not generally increase in value if interest rates decline. Certain types of variable and floating rate instruments may be subject to greater liquidity risk than other debt securities.

Risk Lose Money [Text]

rr_RiskLoseMoney

There is no assurance that the Fund will achieve its investment objectives 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, which is the Fund’s benchmark index, for the periods indicated.

On October 1, 2018, Aberdeen Asset Managers Limited began managing a portion of the assets of the Fund. Prior to that date, the Fund was known as American Beacon Global Evolution Frontier Markets Income Fund and Global Evolution USA, LLC served as the Fund’s sole sub-advisor.

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.

Performance Information Illustrates Variability of Returns [Text]

rr_PerformanceInformationIllustratesVariabilityOfReturns

Performance Availability Website Address [Text]

rr_PerformanceAvailabilityWebSiteAddress

www.americanbeaconfunds.com

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.

Bar Chart [Heading]

rr_BarChartHeading

Calendar year total returns for Investor Class Shares. Year Ended 12/31

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 are a tax-exempt entity or hold your Fund shares through a tax-deferred arrangement, such as an individual retirement account (“IRA”) or a 401(k) plan, the after-tax returns do not apply to your situation.

Performance Table One Class of after Tax Shown [Text]

rr_PerformanceTableOneClassOfAfterTaxShown

After-tax returns are shown only for Investor Class shares of the Fund; after-tax returns for other share classes will vary.

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.

Bar Chart Closing [Text Block]

rr_BarChartClosingTextBlock

Highest Quarterly Return:
11.19%2nd Quarter 2020
01/01/2015 through 12/31/2020

Lowest Quarterly Return:
-14.43%1st Quarter 2020
01/01/2015 through 12/31/2020

The calendar year-to-date total return as of 3/31/2021 was 0.16%.

Performance Table Heading

rr_PerformanceTableHeading

Average annual total returns for periods ended December 31, 2020

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 are a tax-exempt entity or hold your Fund shares through a tax-deferred arrangement, such as an individual retirement account (“IRA”) 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 of the Fund; after-tax returns for other share classes will vary.

(American Beacon Frontier Markets Income Fund - Classes A, C, Y, R5 and Investor) | (American Beacon Frontier Markets Income Fund℠) | JPMorgan EMBI Global Diversified Index (Reflects no deduction for fees, expenses or taxes)

rr_ProspectusTable

rr_AverageAnnualReturnYear01

5.26%

rr_AverageAnnualReturnYear05

7.08%

(American Beacon Frontier Markets Income Fund - Classes A, C, Y, R5 and Investor) | (American Beacon Frontier Markets Income Fund℠) | A Class

rr_AverageAnnualReturnSinceInception

6.17%

Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price)

rr_ProspectusTable

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

4.75%

Redemption Fee (as a percentage of Amount Redeemed)

rr_MaximumDeferredSalesChargeOverOther

0.50%

^[4]

rr_RedemptionFeeOverRedemption

2.00%

rr_ManagementFeesOverAssets

0.85%

rr_DistributionAndService12b1FeesOverAssets

0.25%

rr_OtherExpensesOverAssets

0.45%

^[5]

rr_AcquiredFundFeesAndExpensesOverAssets

0.01%

^[6]

rr_ExpensesOverAssets

1.56%

rr_ExpenseExampleYear01

$ 626

rr_ExpenseExampleYear03

944

rr_ExpenseExampleYear05

1,285

rr_ExpenseExampleYear10

$ 2,243

rr_AverageAnnualReturnYear01

(2.83%)

rr_AverageAnnualReturnYear05

6.06%

rr_AverageAnnualReturnSinceInception

4.18%

(American Beacon Frontier Markets Income Fund - Classes A, C, Y, R5 and Investor) | (American Beacon Frontier Markets Income Fund℠) | C Class

rr_AverageAnnualReturnInceptionDate

Feb. 25, 2014

Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price)

rr_ProspectusTable

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

none

Redemption Fee (as a percentage of Amount Redeemed)

rr_MaximumDeferredSalesChargeOverOther

1.00%

rr_RedemptionFeeOverRedemption

2.00%

rr_ManagementFeesOverAssets

0.85%

rr_DistributionAndService12b1FeesOverAssets

1.00%

rr_OtherExpensesOverAssets

0.29%

^[5]

rr_AcquiredFundFeesAndExpensesOverAssets

0.01%

^[6]

rr_ExpensesOverAssets

2.15%

rr_ExpenseExampleYear01

$ 318

rr_ExpenseExampleYear03

673

rr_ExpenseExampleYear05

1,154

Expense Example, No Redemption, 1 Year

rr_ExpenseExampleYear10

2,483

rr_ExpenseExampleNoRedemptionYear01

218

Expense Example, No Redemption, 3 Years

rr_ExpenseExampleNoRedemptionYear03

673

Expense Example, No Redemption, 5 Years

rr_ExpenseExampleNoRedemptionYear05

1,154

Expense Example, No Redemption, 10 Years

rr_ExpenseExampleNoRedemptionYear10

$ 2,483

rr_AverageAnnualReturnYear01

0.51%

rr_AverageAnnualReturnYear05

6.41%

rr_AverageAnnualReturnSinceInception

4.18%

(American Beacon Frontier Markets Income Fund - Classes A, C, Y, R5 and Investor) | (American Beacon Frontier Markets Income Fund℠) | Y Class

rr_AverageAnnualReturnInceptionDate

Feb. 25, 2014

Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price)

rr_ProspectusTable

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

none

Redemption Fee (as a percentage of Amount Redeemed)

rr_MaximumDeferredSalesChargeOverOther

none

rr_RedemptionFeeOverRedemption

2.00%

rr_ManagementFeesOverAssets

0.85%

rr_DistributionAndService12b1FeesOverAssets

none

rr_OtherExpensesOverAssets

0.29%

^[5]

rr_AcquiredFundFeesAndExpensesOverAssets

0.01%

^[6]

rr_ExpensesOverAssets

1.15%

rr_ExpenseExampleYear01

$ 117

rr_ExpenseExampleYear03

365

rr_ExpenseExampleYear05

633

rr_ExpenseExampleYear10

$ 1,398

rr_AverageAnnualReturnYear01

2.53%

rr_AverageAnnualReturnYear05

7.43%

rr_AverageAnnualReturnSinceInception

5.28%

(American Beacon Frontier Markets Income Fund - Classes A, C, Y, R5 and Investor) | (American Beacon Frontier Markets Income Fund℠) | R5 Class

rr_AverageAnnualReturnInceptionDate

Feb. 25, 2014

Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price)

rr_ProspectusTable

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

none

Redemption Fee (as a percentage of Amount Redeemed)

rr_MaximumDeferredSalesChargeOverOther

none

rr_RedemptionFeeOverRedemption

2.00%

rr_ManagementFeesOverAssets

0.85%

rr_DistributionAndService12b1FeesOverAssets

none

rr_OtherExpensesOverAssets

0.24%

^[5]

rr_AcquiredFundFeesAndExpensesOverAssets

0.01%

^[6]

rr_ExpensesOverAssets

1.10%

rr_ExpenseExampleYear01

$ 112

rr_ExpenseExampleYear03

350

rr_ExpenseExampleYear05

606

rr_ExpenseExampleYear10

$ 1,340

rr_AverageAnnualReturnYear01

2.59%

rr_AverageAnnualReturnYear05

7.56%

rr_AverageAnnualReturnSinceInception

5.36%

(American Beacon Frontier Markets Income Fund - Classes A, C, Y, R5 and Investor) | (American Beacon Frontier Markets Income Fund℠) | Investor Class

rr_AverageAnnualReturnInceptionDate

Feb. 25, 2014

Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price)

rr_ProspectusTable

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

none

Redemption Fee (as a percentage of Amount Redeemed)

rr_MaximumDeferredSalesChargeOverOther

none

rr_RedemptionFeeOverRedemption

2.00%

rr_ManagementFeesOverAssets

0.85%

rr_DistributionAndService12b1FeesOverAssets

none

rr_OtherExpensesOverAssets

0.57%

^[5]

rr_AcquiredFundFeesAndExpensesOverAssets

0.01%

^[6]

rr_ExpensesOverAssets

1.43%

rr_ExpenseExampleYear01

$ 146

rr_ExpenseExampleYear03

452

rr_ExpenseExampleYear05

782

Year to Date Return, Label

rr_ExpenseExampleYear10

$ 1,713

Annual Return 2015

rr_AnnualReturn2015

(3.82%)

Annual Return 2016

rr_AnnualReturn2016

10.39%

Annual Return 2017

rr_AnnualReturn2017

14.88%

Annual Return 2018

rr_AnnualReturn2018

(3.51%)

Annual Return 2019

rr_AnnualReturn2019

13.10%

Annual Return 2020

rr_AnnualReturn2020

2.25%

rr_YearToDateReturnLabel

The calendar year-to-date total return as of 3/31/2021 was 0.16%.

Bar Chart, Year to Date Return

rr_BarChartYearToDateReturn

0.16%

Bar Chart, Year to Date Return, Date

rr_BarChartYearToDateReturnDate

Mar. 31, 2021

Highest Quarterly Return, Label

rr_HighestQuarterlyReturnLabel

Highest Quarterly Return:11.19%2nd Quarter 202001/01/2015 through 12/31/2020

Highest Quarterly Return

rr_BarChartHighestQuarterlyReturn

11.19%

Highest Quarterly Return, Date

rr_BarChartHighestQuarterlyReturnDate

Jun. 30, 2020

Lowest Quarterly Return, Label

rr_LowestQuarterlyReturnLabel

Lowest Quarterly Return:-14.43%1st Quarter 202001/01/2015 through 12/31/2020

Lowest Quarterly Return

rr_BarChartLowestQuarterlyReturn

(14.43%)

Lowest Quarterly Return, Date

rr_BarChartLowestQuarterlyReturnDate

Mar. 31, 2020

rr_AverageAnnualReturnYear01

2.25%

rr_AverageAnnualReturnYear05

7.19%

(American Beacon Frontier Markets Income Fund - Classes A, C, Y, R5 and Investor) | (American Beacon Frontier Markets Income Fund℠) | Investor Class | Returns After Taxes on Distributions

rr_AverageAnnualReturnSinceInception

5.00%

rr_ProspectusTable

rr_AverageAnnualReturnYear01

(0.63%)

rr_AverageAnnualReturnYear05

4.42%

(American Beacon Frontier Markets Income Fund - Classes A, C, Y, R5 and Investor) | (American Beacon Frontier Markets Income Fund℠) | Investor Class | Returns After Taxes on Distributions and Sales of Fund Shares

rr_AverageAnnualReturnSinceInception

2.23%

rr_ProspectusTable

rr_AverageAnnualReturnYear01

1.22%

rr_AverageAnnualReturnYear05

4.33%

(American Beacon Continuous Capital Emerging Markets Fund - Classes A, C, Y, R5 and Investor) | (American Beacon Continuous Capital Emerging Markets Fund℠)

rr_AverageAnnualReturnSinceInception

2.57%

Objective, Primary [Text Block]

rr_ProspectusTable

Objective [Heading]

rr_ObjectiveHeading

Investment Objective

rr_ObjectivePrimaryTextBlock

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

Expense [Heading]

rr_ExpenseHeading

Fees and Expenses of the Fund

Expense Narrative [Text Block]

rr_ExpenseNarrativeTextBlock

This table describes the fees and expenses that you may pay if you buy, hold, and sell shares of the Fund. You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in the tables and examples below. 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 16 of the Prospectus and “Additional Purchase and Sale Information for A Class Shares” on page 33 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, Waivers and Other Information.” Although the Fund does not impose any sales charge on Y Class shares, you may pay a commission to your broker on your purchases and sales of those shares, which is not reflected in the tables or Example below.

Expense Breakpoint Discounts [Text]

rr_ExpenseBreakpointDiscounts

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, 2022

Expenses Deferred Charges [Text Block]

rr_ExpensesDeferredChargesTextBlock

Other Expenses, New Fund, Based on Estimates [Text]

rr_OtherExpensesNewFundBasedOnEstimates

Other Expenses and Acquired Fund Fees and Expenses for the A Class and C Class shares are based on estimated expenses for the current fiscal year.

Expenses Not Correlated to Ratio Due to Acquired Fund Fees [Text]

rr_ExpensesNotCorrelatedToRatioDueToAcquiredFundFees

Expense Example [Heading]

rr_ExpenseExampleHeading

Example

Expense Example Narrative [Text Block]

rr_ExpenseExampleNarrativeTextBlock

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 94% of the average value of its portfolio.

Portfolio Turnover, Rate

rr_PortfolioTurnoverRate

94.00%

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 at the time of investment. A company is generally regarded as being economically tied to an emerging market country if it:

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

■	is headquartered in an emerging market country;

■	is domiciled 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, Continuous Capital, LLC (“Sub-Advisor”), seeks to achieve the Fund’s investment objective by applying a fundamental research philosophy and approach to identify companies that trade at attractive valuations and are of high quality. When selecting stocks for the Fund, the Sub-Advisor considers characteristics, such as:

■	price-to-earnings ratio – share price relative to earnings-per-share,

■	enterprise value-to-EBITDA (earnings before interest, taxes, depreciation and amortization) ratio – a company’s enterprise value relative to its earnings before interest, tax, depreciation and amortization,

■	dividend yield – ratio of dividends-per-share to the stock price,

■	dividend growth – the year over year change in dividends per share,

■	return on invested capital – ratio of a company’s earnings to its equity and debt, and

■	return on equity – ratio of a company’s earnings to its equity.

The Sub-Advisor also utilizes a combination of qualitative and fundamental research considerations to select securities for the Fund. These considerations include evaluating the efficacy of company management’s historical capital allocation, dividend, and share repurchase policies. The Sub-Advisor seeks to diversify investments across industries and countries.

Although the Fund seeks diversification across sectors and industries, from time to time, based on portfolio positioning, the Fund may have significant positions (e.g., 25% or more of the Fund’s net assets) in particular sectors. However, as the sector composition of the Fund’s portfolio changes over time, the Fund’s exposure to a sector may be lower at a future date, and the Fund’s exposure to other market sectors may be higher. The Fund may invest in companies of all market capitalizations.

The Fund’s equity investments may include common stocks, depositary receipts including both American Depositary Receipts (“ADRs”) and Global Depositary Receipts (“GDRs”), U.S. dollar-denominated foreign stocks traded on U.S. exchanges, preferred stocks, and real estate investment trusts (“REITs”). The Fund may, at times, invest significantly in shares of Chinese companies listed on mainland China and Hong Kong exchanges as well as in ADRs. However, as the country allocation of the Fund’s portfolio changes over time, the Fund’s exposure to Chinese companies may be lower at a future date, and the Fund’s exposure to other countries may be higher. The Fund may have exposure to foreign currencies by making direct investments in non-U.S. currencies, engaging in foreign currency transactions on a spot (cash) basis, or investing in securities denominated in non-U.S. currencies.

The Fund may also invest cash balances in other investment companies, including government money market funds, and exchange-traded funds (“ETFs”).

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

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 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 listed below are presented in alphabetical order and not in order of importance or potential exposure. Among other matters, this presentation is intended to facilitate your ability to find particular risks and compare them with the risks of other funds. Each risk summarized below is considered a “principal risk” of investing in the Fund, regardless of the order in which it appears.

Currency Risk
The Fund may have exposure to foreign currencies by using various instruments described below. Foreign currencies may fluctuate significantly over short periods of time, may be affected unpredictably by intervention, or the failure to intervene, of the U.S. or foreign governments or central banks, and may be affected by currency controls or political developments in the U.S. or abroad. Foreign currencies may also decline in value relative to the U.S. dollar and other currencies and thereby affect the Fund’s investments in non-U.S. currencies or in securities that trade in, and receive revenues in, non-U.S. currencies. The Fund may gain exposure to foreign currencies because of its investments in one or more of the following:

■	Non-U.S. currencies

■	Foreign currency transactions on a spot (cash) basis

■	Securities denominated in non-U.S. currencies

Dividend Risk
An issuer of stock held by the Fund may choose not to declare a dividend or the dividend rate might not remain at current levels or increase over time. Dividend paying stocks might not experience the same level of earnings growth or capital appreciation as non-dividend paying stocks. Securities that pay dividends may be sensitive to changes in interest rates and, as interest rates rise or fall, the prices of such securities may fall.

Equity Investments Risk
Equity securities are subject to investment risk and market risk. The Fund may invest in the following equity securities, which may expose the Fund to the following additional risks:

■

Common Stock 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.

■

Depositary Receipts and U.S. Dollar-Denominated Foreign Stocks Traded on U.S. Exchanges Risk. 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, more volatility, less government regulation and supervision and delays in transaction settlement.

■

Preferred Stock Risk. 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. In certain situations, an issuer may call or redeem its preferred stock or convert it to common stock. The market prices of preferred stocks are generally more sensitive to actual or perceived changes in the issuer’s financial condition or prospects than are the prices of debt securities.

■

Real Estate Investment Trusts (“REITs”) Risk. Investments in REITs are subject to the risks associated with investing in the real estate industry, including, among other risks: adverse developments affecting the real estate industry; declines in real property values; changes in interest rates; defaults by mortgagors or other borrowers and tenants; lack of availability of mortgage funds or financing; extended vacancies of properties, especially during economic downturns; casualty or condemnation losses; and governmental actions, such as changes to tax laws, zoning regulations or environmental regulations. REITs also are dependent upon the skills of their managers and are subject to heavy cash flow dependency or self-liquidation. Regardless of where a REIT is organized or traded, its performance may be affected significantly by events in the region where its properties are located. 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 (“Internal Revenue Code”), or to maintain their exemption from registration under the Investment Company Act of 1940, as amended (“Investment Company Act”). 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. REITs tend to be small- to mid-capitalization securities and, as such, are subject to the risks of investing in small- to mid-capitalization securities.

Geographic Concentration Risk
From time to time, based on market or economic conditions, the Fund may invest a significant portion of its assets in the securities of issuers located in, or with significant economic ties to, a single country or geographic region, which could increase the risk that economic, political, business, regulatory, diplomatic, social and environmental conditions in that particular country or geographic region may have a significant impact on the Fund’s performance. Investing in such a manner could cause the Fund’s performance to be more volatile than the performance of more geographically diverse funds.

■

China Investment Risk. Investing in securities of Chinese issuers, including A-Shares, involves certain risks and considerations not typically associated with investing in securities of U.S. issuers, including, among others, more frequent trading suspensions and government interventions (including by nationalization of assets), currency exchange rate fluctuations or blockages, limits on the use of brokers and on foreign ownership, different financial reporting standards, higher dependence on exports and international trade, potential for increased trade tariffs, embargoes and other trade limitations, and

custody risks associated with programs used to access Chinese securities. Significant portions of the Chinese securities markets may become rapidly illiquid, as Chinese issuers have the ability to suspend the trading of their equity securities, and have shown a willingness to exercise that option in response to market volatility and other events.

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. Many larger-capitalization companies also 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 may have limited marketability, be subject to restrictions on sale, be difficult or impossible to purchase or sell at favorable times or prices, or become less liquid in response to market developments or adverse credit events that may affect issuers or guarantors of a security. An inability to sell a portfolio position can adversely affect the Fund’s value or prevent the Fund from being able to take advantage of other investment opportunities. 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, liquidity risk may be magnified in rising interest rate environments in the event of higher than normal redemption rates. Unexpected redemptions may force the Fund 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 Timing Risk
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. In addition, because the Fund invests in foreign securities, 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. While the Manager monitors trading in the Fund, there is no guarantee that it can detect all market timing activities.

Mid-Capitalization Companies Risk
Investing in the securities of mid-capitalization companies involves greater risk and the possibility of greater price volatility than investing in larger-capitalization and more established companies. Since mid-capitalization companies may have narrower commercial markets and more limited operating history, product lines, and managerial and financial resources than larger, more established companies, 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.

■

ETFs. Because exchange-traded funds (“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 (“NAV”) and may not be liquid. An ETF that tracks an index may not precisely replicate the returns of that index, and an actively-managed ETF’s performance will reflect its adviser’s ability to make investment decisions that are suited to achieving the ETF’s investment objectives.

■	Government Money Market Funds. Investments in government money market funds are subject to interest rate risk, credit risk, and market risk.

Securities Lending Risk
To the extent the Fund lends its securities, it may be subject to the following risks: i) the securities in which the Fund reinvests cash collateral may decrease in value, causing the Fund to incur a loss, or may not perform sufficiently to cover the Fund’s payment to the borrower of a pre-negotiated fee or “rebate” for the use of that cash collateral in connection with the loan; ii) non-cash collateral may decline in value, resulting in the Fund becoming under-secured; iii) delays may occur in the recovery of loaned securities from borrowers, which could result in the Fund being unable to vote proxies or settle transactions or cause the Fund to incur increased costs; and iv) if the borrower becomes subject to insolvency or similar proceedings, the Fund could incur delays in its ability to enforce its rights in its collateral.

Securities Selection Risk
Securities selected by the sub-advisor for the Fund may not perform to expectations. This could result in the Fund’s underperformance compared to its benchmark index(es), or other funds with similar investment objectives or strategies.

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

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 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

In the table below, the performance of the A Class and C Class shares for periods prior to February 1, 2021, represents the performance of the Investor Class shares of the Fund. The A Class and C Class shares would have had similar annual returns to the Investor Class shares of the Fund because the shares of each class represent investments in the same portfolio securities. However, the Investor Class shares of the Fund had different expenses than the A Class and C

Class shares, which would affect performance. As the expenses of the C Class shares are higher than the expenses of the Investor Class shares, the returns of the C Class shares for periods prior to February 1, 2021 would be less than those shown below. The A Class and C Class performance shown in the table has not been adjusted for differences in operating expenses between the A Class and C Class shares and the Investor Class shares, but the A Class and C Class shares performance has been adjusted for the impact of the maximum applicable sales charge.

Performance Information Illustrates Variability of Returns [Text]

rr_PerformanceInformationIllustratesVariabilityOfReturns

Performance Availability Website Address [Text]

rr_PerformanceAvailabilityWebSiteAddress

www.americanbeaconfunds.com

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.

Bar Chart [Heading]

rr_BarChartHeading

Calendar year total returns for Investor Class Shares. Year Ended 12/31

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

Performance Table One Class of after Tax Shown [Text]

rr_PerformanceTableOneClassOfAfterTaxShown

After-tax returns are shown only for Investor Class shares of the Fund; after-tax returns for other share classes will vary.

Performance Table Explanation after Tax Higher

rr_PerformanceTableExplanationAfterTaxHigher

Bar Chart Closing [Text Block]

rr_BarChartClosingTextBlock

Highest Quarterly Return:
18.76%2nd Quarter 2020
01/01/2019 through 12/31/2020

Lowest Quarterly Return:
-20.99%1st Quarter 2020
01/01/2019 through 12/31/2020

The calendar year-to-date total return as of March 31, 2021 was 2.92%.

Performance Table Heading

rr_PerformanceTableHeading

Average annual total returns for periods ended December 31, 2020

Performance Table Closing [Text Block]

rr_PerformanceTableClosingTextBlock

(American Beacon Continuous Capital Emerging Markets Fund - Classes A, C, Y, R5 and Investor) | (American Beacon Continuous Capital Emerging Markets Fund℠) | MSCI Emerging Markets Index (Reflects no deduction for fees, expenses or taxes)

rr_ProspectusTable

rr_AverageAnnualReturnYear01

18.31%

(American Beacon Continuous Capital Emerging Markets Fund - Classes A, C, Y, R5 and Investor) | (American Beacon Continuous Capital Emerging Markets Fund℠) | A Class

rr_AverageAnnualReturnSinceInception

17.98%

Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price)

rr_ProspectusTable

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

5.75%

rr_MaximumDeferredSalesChargeOverOther

0.50%

^[7]

rr_ManagementFeesOverAssets

0.88%

rr_DistributionAndService12b1FeesOverAssets

0.25%

rr_OtherExpensesOverAssets

4.44%

^[8]

rr_AcquiredFundFeesAndExpensesOverAssets

0.01%

^[8]

rr_ExpensesOverAssets

5.58%

^[9]

Total Annual Fund Operating Expenses After Expense Reimbursement

rr_FeeWaiverOrReimbursementOverAssets

(4.12%)

^[10],[11]

rr_NetExpensesOverAssets

1.46%

rr_ExpenseExampleYear01

$ 715

rr_ExpenseExampleYear03

1,798

rr_ExpenseExampleYear05

2,868

rr_ExpenseExampleYear10

$ 5,490

rr_AverageAnnualReturnYear01

8.46%

rr_AverageAnnualReturnSinceInception

13.64%

(American Beacon Continuous Capital Emerging Markets Fund - Classes A, C, Y, R5 and Investor) | (American Beacon Continuous Capital Emerging Markets Fund℠) | C Class

rr_AverageAnnualReturnInceptionDate

Feb. 01, 2021

Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price)

rr_ProspectusTable

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

none

rr_MaximumDeferredSalesChargeOverOther

1.00%

rr_ManagementFeesOverAssets

0.88%

rr_DistributionAndService12b1FeesOverAssets

1.00%

rr_OtherExpensesOverAssets

4.44%

^[8]

rr_AcquiredFundFeesAndExpensesOverAssets

0.01%

^[8]

rr_ExpensesOverAssets

6.33%

^[9]

Total Annual Fund Operating Expenses After Expense Reimbursement

rr_FeeWaiverOrReimbursementOverAssets

(4.12%)

^[10],[11]

rr_NetExpensesOverAssets

2.21%

rr_ExpenseExampleYear01

$ 324

rr_ExpenseExampleYear03

1,508

rr_ExpenseExampleYear05

2,758

Expense Example, No Redemption, 1 Year

rr_ExpenseExampleYear10

5,741

rr_ExpenseExampleNoRedemptionYear01

224

Expense Example, No Redemption, 3 Years

rr_ExpenseExampleNoRedemptionYear03

1,508

Expense Example, No Redemption, 5 Years

rr_ExpenseExampleNoRedemptionYear05

2,758

Expense Example, No Redemption, 10 Years

rr_ExpenseExampleNoRedemptionYear10

$ 5,741

rr_AverageAnnualReturnYear01

14.05%

rr_AverageAnnualReturnSinceInception

16.99%

(American Beacon Continuous Capital Emerging Markets Fund - Classes A, C, Y, R5 and Investor) | (American Beacon Continuous Capital Emerging Markets Fund℠) | Y Class

rr_AverageAnnualReturnInceptionDate

Feb. 01, 2021

Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price)

rr_ProspectusTable

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

none

rr_MaximumDeferredSalesChargeOverOther

none

rr_ManagementFeesOverAssets

0.88%

rr_DistributionAndService12b1FeesOverAssets

none

rr_OtherExpensesOverAssets

1.84%

rr_AcquiredFundFeesAndExpensesOverAssets

0.01%

rr_ExpensesOverAssets

2.73%

^[9]

Total Annual Fund Operating Expenses After Expense Reimbursement

rr_FeeWaiverOrReimbursementOverAssets

(1.47%)

^[10],[11]

rr_NetExpensesOverAssets

1.26%

rr_ExpenseExampleYear01

$ 128

rr_ExpenseExampleYear03

708

rr_ExpenseExampleYear05

1,314

rr_ExpenseExampleYear10

$ 2,953

rr_AverageAnnualReturnYear01

15.42%

rr_AverageAnnualReturnSinceInception

17.41%

(American Beacon Continuous Capital Emerging Markets Fund - Classes A, C, Y, R5 and Investor) | (American Beacon Continuous Capital Emerging Markets Fund℠) | R5 Class

rr_AverageAnnualReturnInceptionDate

Dec. 17, 2018

Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price)

rr_ProspectusTable

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

none

rr_MaximumDeferredSalesChargeOverOther

none

rr_ManagementFeesOverAssets

0.88%

rr_DistributionAndService12b1FeesOverAssets

none

rr_OtherExpensesOverAssets

1.83%

rr_AcquiredFundFeesAndExpensesOverAssets

0.01%

rr_ExpensesOverAssets

2.72%

^[9]

Total Annual Fund Operating Expenses After Expense Reimbursement

rr_FeeWaiverOrReimbursementOverAssets

(1.56%)

^[10],[11]

rr_NetExpensesOverAssets

1.16%

rr_ExpenseExampleYear01

$ 118

rr_ExpenseExampleYear03

696

rr_ExpenseExampleYear05

1,301

rr_ExpenseExampleYear10

$ 2,937

rr_AverageAnnualReturnYear01

15.42%

rr_AverageAnnualReturnSinceInception

17.41%

(American Beacon Continuous Capital Emerging Markets Fund - Classes A, C, Y, R5 and Investor) | (American Beacon Continuous Capital Emerging Markets Fund℠) | Investor Class

rr_AverageAnnualReturnInceptionDate

Dec. 17, 2018

Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price)

rr_ProspectusTable

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

none

rr_MaximumDeferredSalesChargeOverOther

none

rr_ManagementFeesOverAssets

0.88%

rr_DistributionAndService12b1FeesOverAssets

none

rr_OtherExpensesOverAssets

2.37%

rr_AcquiredFundFeesAndExpensesOverAssets

0.01%

rr_ExpensesOverAssets

3.26%

^[9]

Total Annual Fund Operating Expenses After Expense Reimbursement

rr_FeeWaiverOrReimbursementOverAssets

(1.72%)

^[10],[11]

rr_NetExpensesOverAssets

1.54%

rr_ExpenseExampleYear01

$ 157

rr_ExpenseExampleYear03

843

rr_ExpenseExampleYear05

1,553

Year to Date Return, Label

rr_ExpenseExampleYear10

$ 3,441

Annual Return 2019

rr_AnnualReturn2019

19.44%

Annual Return 2020

rr_AnnualReturn2020

15.05%

rr_YearToDateReturnLabel

The calendar year-to-date total return as of March 31, 2021 was 2.92%.

Bar Chart, Year to Date Return

rr_BarChartYearToDateReturn

2.92%

Bar Chart, Year to Date Return, Date

rr_BarChartYearToDateReturnDate

Mar. 31, 2021

Highest Quarterly Return, Label

rr_HighestQuarterlyReturnLabel

Highest Quarterly Return:18.76%2nd Quarter 202001/01/2019 through 12/31/2020

Highest Quarterly Return

rr_BarChartHighestQuarterlyReturn

18.76%

Highest Quarterly Return, Date

rr_BarChartHighestQuarterlyReturnDate

Jun. 30, 2020

Lowest Quarterly Return, Label

rr_LowestQuarterlyReturnLabel

Lowest Quarterly Return:-20.99%1st Quarter 202001/01/2019 through 12/31/2020

Lowest Quarterly Return

rr_BarChartLowestQuarterlyReturn

(20.99%)

Lowest Quarterly Return, Date

rr_BarChartLowestQuarterlyReturnDate

Mar. 31, 2020

rr_AverageAnnualReturnYear01

15.05%

(American Beacon Continuous Capital Emerging Markets Fund - Classes A, C, Y, R5 and Investor) | (American Beacon Continuous Capital Emerging Markets Fund℠) | Investor Class | Returns After Taxes on Distributions

rr_AverageAnnualReturnSinceInception

16.99%

rr_ProspectusTable

rr_AverageAnnualReturnYear01

14.90%

rr_AverageAnnualReturnSinceInception

16.51%

rr_ProspectusTable

rr_AverageAnnualReturnYear01

8.99%