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(American Beacon NIS Core Plus Bond Fund - Classes A, C, Y and R6) | (American Beacon NIS Core Plus Bond Fund)  
Prospectus: rr_ProspectusTable  
Objective [Heading] rr_ObjectiveHeading Investment Objective
Objective, Primary [Text Block] rr_ObjectivePrimaryTextBlock
The Fund’s investment objectives are to seek high current income and, secondarily, 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 23 of the Prospectus and “Additional Purchase and Sale Information for A Class Shares” on page 39 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.”
Expense Breakpoint Discounts [Text] rr_ExpenseBreakpointDiscounts You may qualify for sales discounts if you and your eligible family members invest, or agree to invest in the future, at least $50,000 in all classes of the American Beacon Funds on an aggregated basis.
Expense Breakpoint, Minimum Investment Required [Amount] rr_ExpenseBreakpointMinimumInvestmentRequiredAmount $ 50,000
Shareholder Fees Caption [Text] rr_ShareholderFeesCaption Shareholder Fees (fees paid directly from your investment)
Operating Expenses Caption [Text] rr_OperatingExpensesCaption Annual Fund Operating Expenses (Expenses that you pay each year as a percentage of the value of your investment)
Fee Waiver or Reimbursement over Assets, Date of Termination rr_FeeWaiverOrReimbursementOverAssetsDateOfTermination May 31, 2024
Expenses Deferred Charges [Text Block] rr_ExpensesDeferredChargesTextBlock A contingent deferred sales charge (‘‘CDSC’’) of 0.50% will be charged on certain purchases of $1,000,000 or more of A Class shares that are redeemed in whole or part within 18 months of purchase.
Expense Example [Heading] rr_ExpenseExampleHeading Example
Expense Example Narrative [Text Block] rr_ExpenseExampleNarrativeTextBlock
This Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return each year and that the Fund’s operating expenses remain the same, except that this Example reflects the fee waiver/expense reimbursement arrangement for each share class through May 31, 2024. C Class shares automatically convert to A Class shares 8 years after purchase, if the conversion is available through your financial intermediary. This Example reflects your costs as though C Class shares were held for the full 10-year period. 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 114% of the average value of its portfolio.
Portfolio Turnover, Rate rr_PortfolioTurnoverRate 114.00%
Strategy [Heading] rr_StrategyHeading Principal Investment Strategies
Strategy Narrative [Text Block] rr_StrategyNarrativeTextBlock
The Fund seeks to achieve its investment objectives by investing, under normal circumstances, at least 80% of its net assets, plus the amount of any borrowings for investment purposes, in fixed income securities and investments that provide exposure to fixed income securities. Under normal circumstances, the Fund seeks to invest primarily in a diversified mix of U.S. and U.S. dollar denominated foreign investment grade fixed income securities. The fixed income securities in which the Fund invests may include securities of the U.S. government, its agencies and instrumentalities, including U.S. government-sponsored enterprises (some of which are not backed by the full faith and credit of the U.S. government), corporate bonds, municipal securities, including but not limited to private activity bonds, debentures, bank loans and senior loans, preferred stocks, and convertible securities. The Fund may invest significantly in U.S. Treasury obligations and asset-backed, mortgage-backed and mortgage-related securities (including collateralized mortgage obligations (“CMOs”), commercial mortgage-backed securities (“CMBSs”), and mortgage pass-through securities). The Fund may invest in securities with call features.
The Fund considers investment grade fixed income securities to be debt securities that are rated BBB- or better by S&P Global Ratings (“S&P Global”) or Fitch Ratings Inc. (“Fitch”), Baa3 or better by Moody’s Investors Service, Inc. (“Moody’s”) or, if not rated, are of equivalent investment quality as determined by the sub-advisor. To a lesser extent, the Fund may invest in high-yield securities (commonly referred to as “junk bonds”). The Fund may also invest in unrated securities. The Fund’s investments may include fixed income instruments of any maturity or duration.
The sub-advisor follows a fixed income investment strategy that combines top-down and bottom-up processes while utilizing a relative value approach to security selection, which takes into account the expected economic and market environments. The sub-advisor uses a team approach to determine sector allocations as well as interest rate and yield curve positioning. The team then conducts thorough research to select securities for the Fund that the sub-advisor deems to have the best relative value. The Fund is managed to have a similar overall interest rate risk to the Bloomberg US Aggregate Bond Index.
The Fund may engage in active and frequent trading of portfolio securities to achieve its principal investment strategies.
To reduce market exposure or in anticipation of liquidity needs, the Fund may invest cash balances in other investment companies, including a government money market fund advised by the Manager, with respect to which the Manager receives a management fee.
Risk [Heading] rr_RiskHeading Principal Risks
Bar Chart and Performance Table [Heading] rr_BarChartAndPerformanceTableHeading Fund Performance
Performance Narrative [Text Block] rr_PerformanceNarrativeTextBlock
The bar chart and table below provide an indication of risk by showing changes in the Fund’s performance over time. The bar chart shows how the Fund’s performance has varied from year to year. The table shows how the Fund’s average annual total returns compare to a broad-based market index for the periods indicated.
You may obtain updated performance information on the Fund’s website at www.americanbeaconfunds.com. Past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future.
Performance Information Illustrates Variability of Returns [Text] rr_PerformanceInformationIllustratesVariabilityOfReturns The bar chart and table below provide an indication of risk by showing changes in the Fund’s performance over time. The bar chart shows how the Fund’s performance has varied from year to year. The table shows how the Fund’s average annual total returns compare to a broad-based market index for the periods indicated.
Performance 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 Y 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 the Y 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:
2.29% 2nd Quarter 2021
01/01/2021 through 12/31/2022
Lowest Quarterly Return:
-5.61% 1st Quarter 2022
01/01/2021 through 12/31/2022
The calendar year-to-date total return as of March 31, 2023 was 3.05%.
Performance Table Heading rr_PerformanceTableHeading Average annual total returns for periods ended December 31, 2022
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 the Y Class shares of the Fund; after-tax returns for other share classes will vary.
(American Beacon NIS Core Plus Bond Fund - Classes A, C, Y and R6) | (American Beacon NIS Core Plus Bond Fund) | Allocation Risk [Member]  
Prospectus: rr_ProspectusTable  
Risk [Text Block] rr_RiskTextBlock
Allocation Risk
The allocations among strategies, asset classes and market exposures may be less than optimal and may adversely affect the Fund’s performance. There can be no assurance, particularly during periods of market disruption and stress, that judgments about allocations will be correct. The Fund’s allocations may be invested in strategies, asset classes and market exposures during a period when such strategies, asset classes and market exposures underperform.
(American Beacon NIS Core Plus Bond Fund - Classes A, C, Y and R6) | (American Beacon NIS Core Plus Bond Fund) | Asset-Backed Securities Risk [Member]  
Prospectus: rr_ProspectusTable  
Risk [Text Block] rr_RiskTextBlock
Asset-Backed Securities Risk
Investments in asset-backed securities are influenced by factors affecting the assets underlying the securities, including the broader market sector and individual markets, such as the auto markets. These securities may be more sensitive to changes in interest rates than other types of debt securities. Investments in asset-backed securities also are subject to risks of fixed-income securities, which include, but are not limited to, credit risk, interest rate risk, prepayment and extension risk, callable securities risk, valuation risk, liquidity risk, and restricted securities risk. A decline in the credit quality of the issuers of asset-backed securities or instability in the markets for such securities may affect the value and liquidity of such securities, which could result in losses to the Fund. These securities are also subject to the risk of default on the underlying assets, particularly during periods of market downturn, and an unexpectedly high rate of defaults on the underlying assets will adversely affect the security’s value.
(American Beacon NIS Core Plus Bond Fund - Classes A, C, Y and R6) | (American Beacon NIS Core Plus Bond Fund) | Callable Securities Risk [Member]  
Prospectus: rr_ProspectusTable  
Risk [Text Block] rr_RiskTextBlock
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.
(American Beacon NIS Core Plus Bond Fund - Classes A, C, Y and R6) | (American Beacon NIS Core Plus Bond Fund) | Convertible Securities Risk [Member]  
Prospectus: rr_ProspectusTable  
Risk [Text Block] rr_RiskTextBlock
Convertible Securities Risk
The value of a convertible security typically increases or decreases with the price of the underlying common stock. In general, a convertible security is subject to the market risks of stocks when the underlying stock’s price is high relative to the conversion price and is subject to the market risks of debt securities when the underlying stock’s price is low relative to the conversion price. The general market risks of debt securities that are common to convertible securities include, but are not limited to, interest rate risk and credit risk. Many convertible securities have credit ratings that are below investment grade and are subject to the same risks as an investment in below investment grade debt securities (commonly known as “junk bonds”). Lower-rated debt securities may fluctuate more widely in price and yield than investment grade debt securities and may fall in price during times when the economy is weak or is expected to become weak. Convertible securities are subject to the risk that the credit standing of the issuer may have an effect on the convertible security‘s investment value. Convertible securities are sensitive to movement in interest rates.
(American Beacon NIS Core Plus Bond Fund - Classes A, C, Y and R6) | (American Beacon NIS Core Plus Bond Fund) | Counterparty Risk [Member]  
Prospectus: rr_ProspectusTable  
Risk [Text Block] rr_RiskTextBlock
Counterparty Risk
The Fund is subject to the risk that a party or participant to a transaction, such as a broker or a 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.
(American Beacon NIS Core Plus Bond Fund - Classes A, C, Y and R6) | (American Beacon NIS Core Plus Bond Fund) | Credit Risk [Member]  
Prospectus: rr_ProspectusTable  
Risk [Text Block] rr_RiskTextBlock
Credit Risk
The Fund is subject to the risk that the issuer, guarantor or insurer of an obligation, or the counterparty to a transaction may fail, or become less able or unwilling, 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. Generally, the longer the maturity and the lower the credit quality of a security, the more sensitive it is to credit risk.
(American Beacon NIS Core Plus Bond Fund - Classes A, C, Y and R6) | (American Beacon NIS Core Plus Bond Fund) | Cybersecurity and Operational Risk [Member]  
Prospectus: rr_ProspectusTable  
Risk [Text Block] rr_RiskTextBlock
Cybersecurity and Operational Risk
Operational risks arising from, among other problems, human errors, systems and technology disruptions or failures, or cybersecurity incidents may negatively impact the Fund and its service providers as well as the ability of shareholders to transact with the Fund, and result in financial losses. Cybersecurity incidents may allow an unauthorized party to gain access to Fund assets, shareholder data, or proprietary information, or cause the Fund or its service providers, as well
as securities trading venues and their service providers, to suffer data corruption or lose operational functionality. Cybersecurity incidents can result from deliberate attacks or unintentional events. It is not possible for the Fund or its service providers to identify all of the operational risks that may affect the Fund or to develop processes and controls to completely eliminate or mitigate their occurrence or effects. The Fund cannot control the cybersecurity plans and systems of its service providers, its counterparties or the issuers of securities in which the Fund invests. Most issuers in which the Fund invests are heavily dependent on computers for data storage and operations, and require ready access to the internet to conduct their business. Thus, cybersecurity incidents could also affect issuers of securities in which the Fund invests, leading to significant loss of value.
(American Beacon NIS Core Plus Bond Fund - Classes A, C, Y and R6) | (American Beacon NIS Core Plus Bond Fund) | Debentures Risk [Member]  
Prospectus: rr_ProspectusTable  
Risk [Text Block] rr_RiskTextBlock
Debentures Risk
Debentures are unsecured debt securities. The holder of a debenture is protected only by the general creditworthiness of the issuer. The Fund may invest in both corporate and government debentures.
(American Beacon NIS Core Plus Bond Fund - Classes A, C, Y and R6) | (American Beacon NIS Core Plus Bond Fund) | Foreign Investing Risk [Member]  
Prospectus: rr_ProspectusTable  
Risk [Text Block] rr_RiskTextBlock
Foreign Investing Risk
Non-U.S. investments carry potential risks not associated with U.S. investments. Such risks include, but are not limited to: (1) currency exchange rate fluctuations, (2) political and financial instability, (3) less liquidity, (4) lack of uniform accounting, auditing and financial reporting standards, (5) greater volatility, (6) different government regulation and supervision of foreign stock exchanges, brokers and listed companies, and (7) delays or failures in transaction payment and settlement in some foreign markets. The Fund’s investment in a foreign issuer may subject the Fund to regulatory, political, currency, security, economic and other risks associated with that country. Global economic and financial markets have become increasingly interconnected and conditions (including recent volatility, terrorism, war and political instability) and events (including natural disasters) in one country, region or financial market may adversely impact issuers in a different country, region or financial market.
(American Beacon NIS Core Plus Bond Fund - Classes A, C, Y and R6) | (American Beacon NIS Core Plus Bond Fund) | High Portfolio Turnover Risk [Member]  
Prospectus: rr_ProspectusTable  
Risk [Text Block] rr_RiskTextBlock
High Portfolio Turnover Risk
Portfolio turnover is a measure of the Fund’s trading activity over a one-year period. A portfolio turnover rate of 100% would indicate that the Fund sold and replaced the entire value of its securities holdings during the period. The Fund may engage in active and frequent trading and may have a high portfolio turnover rate, which could increase the Fund’s transaction costs, have a negative impact on performance, and generate higher capital gain distributions to shareholders than if the Fund had a lower portfolio turnover rate.
(American Beacon NIS Core Plus Bond Fund - Classes A, C, Y and R6) | (American Beacon NIS Core Plus Bond Fund) | High-Yield Securities Risk [Member]  
Prospectus: rr_ProspectusTable  
Risk [Text Block] rr_RiskTextBlock
High-Yield Securities Risk
Exposure to high-yield, below investment-grade securities (commonly referred to as “junk bonds”) generally involves significantly greater risks than an investment in investment grade securities. High-yield debt securities may fluctuate more widely in price and yield and may fall in price when the economy is weak or expected to become weak. These securities also may be difficult to sell at the time and price the Fund desires. High-yield securities are considered to be speculative with respect to an issuer’s ability to pay interest and principal and carry a greater risk that the issuers of lower-rated securities will default on the timely payment of principal and interest. High-yield securities may experience greater price volatility and less liquidity than investment grade securities. Issuers of securities that are in default or have defaulted may fail to resume principal or interest payments, in which case the Fund may lose its entire investment.
(American Beacon NIS Core Plus Bond Fund - Classes A, C, Y and R6) | (American Beacon NIS Core Plus Bond Fund) | Interest Rate Risk [Member]  
Prospectus: rr_ProspectusTable  
Risk [Text Block] rr_RiskTextBlock
Interest Rate Risk
Generally, the value of investments with interest rate risk, such as fixed-income securities, will move in the opposite direction to movements in interest rates. Factors including central bank monetary policy, rising inflation rates, and changes in general economic conditions may cause interest rates to rise, which could cause the value of the Fund’s investments to decline. Interest rates may rise, perhaps significantly and/or rapidly, potentially resulting in substantial losses to the Fund. The prices of fixed-income securities are also affected by their durations. Fixed-income securities with longer durations generally have greater sensitivity to changes in interest rates. Rising interest rates may cause the value of the Fund’s investments with longer durations and terms to maturity to decline, which may adversely affect the value of the Fund. For example, if a bond has a duration of six years, a 1% increase in interest rates could be expected to result in a 6% decrease in the value of the bond. An increase in interest rates can impact markets broadly as well. 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.
(American Beacon NIS Core Plus Bond Fund - Classes A, C, Y and R6) | (American Beacon NIS Core Plus Bond Fund) | Investment Risk [Member]  
Prospectus: rr_ProspectusTable  
Risk [Text Block] rr_RiskTextBlock
Investment Risk
An investment in the Fund is not a deposit with a bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency. When you sell your shares of the Fund, they could be worth less than what you paid for them. Therefore, you may lose money by investing in the Fund.
(American Beacon NIS Core Plus Bond Fund - Classes A, C, Y and R6) | (American Beacon NIS Core Plus Bond Fund) | Issuer Risk [Member]  
Prospectus: rr_ProspectusTable  
Risk [Text Block] rr_RiskTextBlock
Issuer Risk
The value of, and/or the return generated by, a security may decline for a number of reasons that directly relate to the issuer, such as management performance, financial leverage and reduced demand for the issuer’s goods or services, as well as the historical and prospective earnings of the issuer and the value of its assets.
(American Beacon NIS Core Plus Bond Fund - Classes A, C, Y and R6) | (American Beacon NIS Core Plus Bond Fund) | Liquidity Risk [Member]  
Prospectus: rr_ProspectusTable  
Risk [Text Block] rr_RiskTextBlock
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. Market prices for such instruments may be volatile. During periods of substantial market volatility, an investment or even an entire market segment may become illiquid, sometimes abruptly, which can adversely affect the Fund’s ability to limit losses. 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.
(American Beacon NIS Core Plus Bond Fund - Classes A, C, Y and R6) | (American Beacon NIS Core Plus Bond Fund) | Loan Interests Risk [Member]  
Prospectus: rr_ProspectusTable  
Risk [Text Block] rr_RiskTextBlock
Loan Interests Risk
In making investments in bank loans or senior loans, the Fund will depend primarily on the creditworthiness of the borrower for payment of principal and interest and will also rely on the financial institution to make principal and interest payments to the Fund once it receives payment on the underlying loan. The Fund will also rely on the financial institution to pursue appropriate remedies against a borrower in the event that the borrower defaults. As such, the Fund may be exposed to the credit risk of both the financial institution that made the loan and the underlying borrower.
Unlike publicly traded common stocks, which trade on national exchanges, there is no central place or exchange for loans, including bank loans and senior loans, to trade. There is a risk that the value of any collateral securing a loan in which the Fund has an interest may decline and that the collateral may not be sufficient to cover the amount owed on the loan. In the event that the borrower defaults, the Fund’s access to the collateral may be limited or delayed by bankruptcy or other insolvency laws. Loans trade in an over-the-counter market, and confirmation and settlement, which are effected through standardized procedures and documentation, may take significantly longer than seven days to complete. Extended trade settlement periods may, in unusual market
conditions with a high volume of shareholder redemptions, present a risk to shareholders with respect to the Fund’s ability to pay redemption proceeds within the allowable time periods stated in the Prospectus. The secondary market for loans also may be subject to irregular trading activity and wide bid/ask spreads. The lack of an active trading market for certain loans may impair the ability of the Fund to sell its loan interests at a time when it may otherwise be desirable to do so or may require the Fund to sell them at prices that are less than what the Fund regards as their fair market value and may make it difficult to value such loans. Accordingly, loan interests may at times be illiquid. Interests in loans made to finance highly leveraged companies or transactions, such as corporate acquisitions, may be especially vulnerable to adverse changes in economic or market conditions.
(American Beacon NIS Core Plus Bond Fund - Classes A, C, Y and R6) | (American Beacon NIS Core Plus Bond Fund) | Market Risk [Member]  
Prospectus: rr_ProspectusTable  
Risk [Text Block] rr_RiskTextBlock
Market Risk
The Fund is subject to the risk that the securities markets will move down, sometimes rapidly and unpredictably, based on overall economic conditions and other factors, which may negatively affect the Fund’s performance. Equity securities generally have greater price volatility than fixed-income securities, although under certain market conditions fixed-income securities may have comparable or greater price volatility. During a general downturn in the securities markets, multiple assets may decline in value simultaneously. Prices in many financial markets have increased significantly over the last decade, but there have also been periods of adverse market and financial developments and cyclical change during that timeframe, which have resulted in unusually high levels of volatility in domestic and foreign financial markets that has caused losses for investors and may occur again in the future. The value of a security may decline due to adverse issuer-specific conditions, general market conditions unrelated to a particular issuer, such as changes in interest or inflation rates, or factors that affect a particular industry or industries. Changes in the financial condition of a single issuer or market segment also can impact the market as a whole. Geopolitical and other events, including war, terrorism, economic uncertainty, trade disputes, pandemics, public health crises, natural disasters and related events have led, and in the future may continue to lead, to instability in world economies and markets generally and reduced liquidity in equity, credit and fixed-income markets, which may disrupt economies and markets and adversely affect the value of your investment. Changes in value may be temporary or may last for extended periods.
Policy changes by the U.S. government and/or Federal Reserve and political events within the U.S. and abroad, such as changes in the U.S. presidential administration and Congress, the U.S. government’s inability at times to agree on a long-term budget and deficit reduction plan, the threat of a federal government shutdown and threats not to increase the federal government’s debt limit which could result in a default on the government’s obligations, may affect investor and consumer confidence and may adversely impact financial markets and the broader economy, perhaps suddenly and to a significant degree.
Markets and market participants are increasingly reliant upon both publicly available and proprietary information data systems. Data imprecision, software or other technology malfunctions, programming inaccuracies, unauthorized use or access, and similar circumstances may impair the performance of these systems and may have an adverse impact upon a single issuer, a group of issuers, or the market at large.
The financial markets generally move in cycles, with periods of rising prices followed by periods of declining prices. The value of your investment may reflect these fluctuations.
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Recent Market Events Risk. Both U.S. and international markets have experienced significant volatility in recent months and years. As a result of such volatility, investment returns may fluctuate significantly. Moreover, the risks discussed herein associated with an investment in the Fund may be increased. An outbreak of infectious respiratory illness caused by a novel coronavirus, known as COVID-19, was first detected in late 2019 and has subsequently spread globally. The transmission of various variants of COVID-19, and efforts to contain their spread, have resulted, and may continue to result, in significant disruptions to business operations, travel restrictions and closed borders, and lower consumer demand, as well as general concern and uncertainty that has negatively affected the global economy. Any resurgence of COVID-19, a variant or other significant viruses could negatively impact the Fund and adversely impact the economies of many nations, individual companies and the global securities and commodities markets, including their liquidity, in ways that cannot necessarily be foreseen at the present time.
Although interest rates were unusually low in recent years in the U.S. and abroad, in 2022, the Federal Reserve and certain foreign central banks began to raise interest rates as part of their efforts to address rising inflation. It is difficult to accurately predict the pace at which interest rates may continue to increase, or the timing, frequency or magnitude of any such increases. Additionally, various economic and political factors could cause the Federal Reserve or another foreign central bank to change their approach in the future and such actions may result in an economic slowdown in the U.S. and abroad. Unexpected increases in interest rates could lead to market volatility or reduce liquidity in certain sectors of the market. Deteriorating economic fundamentals may, in turn, increase the risk of default or insolvency of particular issuers, negatively impact market value, cause credit spreads to widen, and reduce bank balance sheets. Any of these could cause an increase in market volatility, reduce liquidity across various markets or decrease confidence in the markets. Additionally, high public debt in the U.S. and other countries creates ongoing systemic and market risks and policymaking uncertainty.
In March 2023, the shutdown of certain financial institutions in the U.S. and questions regarding the viability of other financial institutions raised economic concerns over disruption in the U.S. and global banking systems. There can be no certainty that the actions taken by the U.S. or foreign governments will be effective in mitigating the effects of financial institution failures on the economy and restoring public confidence in the U.S. and global banking systems.
Some countries, including the U.S., have in recent years adopted more protectionist trade policies. Slowing global economic growth; risks associated with 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, war, or open conflict between nations, such as between Russia and Ukraine or in eastern Asia; political or economic dysfunction within some nations, including major producers of oil; and dramatic changes in commodity and currency prices could affect the economies of many nations, including the United States, in ways that cannot necessarily be foreseen at the present time. Russia’s military invasion of Ukraine beginning in February 2022, the responses and sanctions by the United States and other countries, and the potential for wider conflict have had, and could continue to have, severe adverse effects on the performance and liquidity of global markets, and negatively affect the value of the Fund’s investments. The duration of ongoing hostilities and the vast array of sanctions and related events cannot be predicted. Those events present material uncertainty and risk with respect to markets globally and the performance of the Fund and its investments or operations could be negatively impacted.
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.
(American Beacon NIS Core Plus Bond Fund - Classes A, C, Y and R6) | (American Beacon NIS Core Plus Bond Fund) | Mortgage-Backed and Mortgage-Related Securities Risk [Member]  
Prospectus: rr_ProspectusTable  
Risk [Text Block] rr_RiskTextBlock
Mortgage-Backed and Mortgage-Related Securities Risk
Investments in mortgage-backed and mortgage-related securities are influenced by the factors affecting the mortgages underlying the securities or the housing market. These securities tend to be more sensitive to changes in interest rates than other types of debt securities. Investments in mortgage-backed and mortgage-related securities also are subject to market risks for fixed-income securities, which include, but are not limited to, credit risk, interest rate risk, prepayment and extension risk, callable securities risk, valuation risk, liquidity risk, and restricted securities risk. A decline in the credit quality of the issuers of mortgage-backed and mortgage-related securities or instability in the markets for such securities may affect the value and liquidity of such securities, which could result in losses to the Fund. These securities are also subject to the risk of default on the underlying mortgages, particularly during periods of market downturn, and an unexpectedly high rate of defaults on the underlying assets will adversely affect the security’s value. Additionally, certain mortgage-related
securities may include securities backed by pools of loans made to “subprime” borrowers or borrowers with blemished credit histories; the risk of defaults is generally higher in the case of mortgage pools that include such subprime mortgages.
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Collateralized Mortgage Obligation (“CMOs”) Risk. CMOs may offer a higher yield than U.S. government securities, but they may also be subject to greater price fluctuation and credit risk. In addition, CMOs typically will be issued in a variety of classes or series, which have different maturities and are retired in sequence. In the event of a default by an issuer of a CMO, there is no assurance that the collateral securing such CMO will be sufficient to pay principal and interest. It is possible that there will be limited opportunities for trading CMOs in the OTC market, the depth and liquidity of which will vary from time to time.
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Commercial Mortgage-Backed Securities (“CMBS”) Risk. CMBS include securities that reflect an interest in, and are secured by, mortgage loans on commercial real property. CMBS are subject to the risks generally associated with mortgage-backed securities. CMBS may not be backed by the full faith and credit of the U.S. Government and are subject to risk of default on the underlying mortgages. CMBS also are subject to many of the risks of investing in the real estate securing the underlying mortgage loans. These risks reflect the effects of local and other economic conditions on real estate markets, the ability of tenants to make loan payments, and the ability of a property to attract and retain tenants.
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Mortgage Pass-Through Securities Risk. Mortgage pass-through securities provide for the “pass through” of the monthly payments made by individual borrowers on their residential or commercial mortgage loans, net of any fees by the security issuer and guarantor, as applicable, to the holder of the security. Small movements in interest rates, both increases and decreases, may quickly and significantly affect the value of certain mortgage pass-through securities. Mortgage pass-through securities involve interest rate risk, credit risk, prepayment risk and extension risk.
(American Beacon NIS Core Plus Bond Fund - Classes A, C, Y and R6) | (American Beacon NIS Core Plus Bond Fund) | Municipal Securities Risk [Member]  
Prospectus: rr_ProspectusTable  
Risk [Text Block] rr_RiskTextBlock
Municipal Securities Risk
Municipal securities could be affected by adverse political and legislative changes. The ability of a municipal issuer to make payments can be affected by uncertainties in the municipal securities market, including: litigation; the strength of the local or national economy; the issuer’s ability to raise revenues through tax or other means; budgetary constraints of local, state and federal governments upon which the issuer may be relying for funding; a legislature’s willingness or ability to appropriate funds needed to pay municipal securities obligations; the bankruptcy of the issuer; adverse political and legislative changes, including to eliminate or limit the tax-exempt status of municipal bond interest or dividends; and other changes in the financial condition of a municipality. Changes in interest rates and market conditions may directly impact the liquidity and valuation of municipal securities, which may affect the yield and value of the Fund’s municipal securities investments. A downgrade in an issuer’s or security’s credit rating can reduce the market value of the security. At times, municipal issuers have defaulted on obligations or commenced insolvency proceedings. Financial difficulties of municipal issuers may continue or get worse in the future. Reductions in tax rates may make municipal securities less attractive in comparison to taxable bonds. In addition, the Fund’s investments in municipal securities are subject to the following risks:
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Private Activity Bonds Risk. The issuers of private activity bonds in which the Fund may invest may be negatively impacted by conditions affecting either the general credit of the user of the private activity project or a project itself. The Fund’s private activity bond holdings also may pay interest subject to the alternative minimum tax. See the section of the Prospectus entitled “About Your Investment-Distributions and Taxes” for more details.
(American Beacon NIS Core Plus Bond Fund - Classes A, C, Y and R6) | (American Beacon NIS Core Plus Bond Fund) | Other Investment Companies Risk [Member]  
Prospectus: rr_ProspectusTable  
Risk [Text Block] rr_RiskTextBlock
Other Investment Companies Risk
To the extent that the Fund invests in shares of other registered investment companies, the Fund will indirectly bear the fees and expenses charged by those investment companies in addition to the Fund’s direct fees and expenses. To the extent the Fund invests in other investment companies that invest in equity securities, fixed-income securities and/or foreign securities, or that track an index, the Fund is subject to the risks associated with the underlying investments held by the investment company or the index fluctuations to which the investment company is subject. The Fund will be subject to the risks associated with investments in those companies, including but not limited to the following:
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Government Money Market Funds Risk. Investments in government money market funds are subject to interest rate risk, credit risk, and market risk.
(American Beacon NIS Core Plus Bond Fund - Classes A, C, Y and R6) | (American Beacon NIS Core Plus Bond Fund) | Preferred Stock Risk [Member]  
Prospectus: rr_ProspectusTable  
Risk [Text Block] rr_RiskTextBlock
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.
(American Beacon NIS Core Plus Bond Fund - Classes A, C, Y and R6) | (American Beacon NIS Core Plus Bond Fund) | Prepayment and Extension Risk [Member]  
Prospectus: rr_ProspectusTable  
Risk [Text Block] rr_RiskTextBlock
Prepayment and Extension Risk
Prepayment risk is the risk that the principal amount of a bond may be repaid prior to the bond’s maturity date. Due to a decline in interest rates or excess cash flow into the issuer, a debt security may be called or otherwise converted, prepaid or redeemed before maturity. If this occurs, no additional interest will be paid on the investment. The Fund may have to reinvest the proceeds in another investment at a lower rate, may not benefit from an increase in value that may result from declining interest rates, and may lose any premium it paid to acquire the security. The rate of prepayments tends to increase as interest rates fall, which could cause the average maturity of the portfolio to shorten. Extension risk is the risk that a decrease in prepayments may, as a result of higher interest rates or other factors, result in the extension of a security’s effective maturity, increase the risk of default and delayed payment, heighten interest rate risk and increase the potential for a decline in its price. In addition, as a consequence of a decrease in prepayments, the amount of principal available to the Fund for investment would be reduced.
(American Beacon NIS Core Plus Bond Fund - Classes A, C, Y and R6) | (American Beacon NIS Core Plus Bond Fund) | Redemption Risk [Member]  
Prospectus: rr_ProspectusTable  
Risk [Text Block] rr_RiskTextBlock
Redemption Risk
The Fund may experience periods of high levels of redemptions that could cause the Fund to sell assets at inopportune times or at a loss or depressed value. Heavy redemptions could hurt the Fund’s performance. The sale of assets to meet redemption requests may create net capital gains, which could cause the Fund to have to distribute substantial capital gains. Redemption risk is greater to the extent that one or more investors or intermediaries control a large percentage of investments in the Fund. In addition, redemption risk is heightened during periods of declining or illiquid markets. A rise in interest rates or other market developments may cause investors to move out of fixed-income securities on a large scale. During periods of heavy redemptions, the Fund may borrow funds through the interfund credit facility or from a bank line of credit, which may increase costs.
(American Beacon NIS Core Plus Bond Fund - Classes A, C, Y and R6) | (American Beacon NIS Core Plus Bond Fund) | Secured, Partially Secured and Unsecured Obligation Risk [Member]  
Prospectus: rr_ProspectusTable  
Risk [Text Block] rr_RiskTextBlock
Secured, Partially Secured and Unsecured Obligation Risk
Debt obligations may be secured, partially secured or unsecured. Interests in secured and partially-secured obligations have the benefit of collateral and, typically, of restrictive covenants limiting the ability of the borrower to further encumber its assets. However, there is no assurance that the liquidation of collateral from a secured or partially-secured obligation would satisfy the borrower’s obligation, or that the collateral can be liquidated. Furthermore, there is a risk that the value of any collateral securing an obligation in which the Fund has an interest may decline and that the collateral may not be sufficient to cover the amount owed on the obligation. In the event the borrower defaults, the Fund’s access to the collateral may be limited or delayed by bankruptcy or other insolvency laws. Unsecured debt, including senior unsecured and subordinated debt, will not be secured by any collateral and will be effectively subordinated to a borrower’s secured indebtedness (to the extent of the collateral securing such indebtedness). With respect to unsecured obligations, the Fund lacks any collateral on which to foreclose to satisfy its claim in whole or in part. Such instruments generally have greater price volatility than that of fully secured holdings and may be less liquid.
(American Beacon NIS Core Plus Bond Fund - Classes A, C, Y and R6) | (American Beacon NIS Core Plus Bond Fund) | Securities Selection Risk [Member]  
Prospectus: rr_ProspectusTable  
Risk [Text Block] rr_RiskTextBlock
Securities Selection Risk
Securities selected for the Fund may not perform to expectations. This could result in the Fund’s underperformance compared to its performance index(es), or other funds with similar investment objectives or strategies.
(American Beacon NIS Core Plus Bond Fund - Classes A, C, Y and R6) | (American Beacon NIS Core Plus Bond Fund) | Small Fund Risk [Member]  
Prospectus: rr_ProspectusTable  
Risk [Text Block] rr_RiskTextBlock
Small Fund Risk
Like other smaller funds, large inflows and outflows may impact the Fund’s market exposure for limited periods of time. Investment positions may also have a disproportionate impact, negative or positive, on performance, and Fund performance may be more volatile than that of a larger fund. The Fund’s shareholder fees and annual fund operating expenses also may be higher than those of a fund that has attracted sufficient assets to achieve investment and trading efficiencies. Shareholders of the Fund may incur higher expenses if the Fund fails to attract sufficient assets to realize economies of scale. Investors in the Fund also bear the risk that, without sufficient assets, the Fund may not be successful in implementing its investment strategy or may not employ a successful investment strategy.
(American Beacon NIS Core Plus Bond Fund - Classes A, C, Y and R6) | (American Beacon NIS Core Plus Bond Fund) | Unrated Securities Risk [Member]  
Prospectus: rr_ProspectusTable  
Risk [Text Block] rr_RiskTextBlock
Unrated Securities Risk
Because the Fund may purchase securities that are not rated by any rating organization, the sub-advisor, after assessing their credit quality, may internally assign ratings to certain of those securities in categories similar to those of rating organizations. Unrated securities are subject to the risk that the 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.
(American Beacon NIS Core Plus Bond Fund - Classes A, C, Y and R6) | (American Beacon NIS Core Plus Bond Fund) | U.S. Government Securities and Government-Sponsored Enterprises Risk [Member]  
Prospectus: rr_ProspectusTable  
Risk [Text Block] rr_RiskTextBlock
U.S. Government Securities and Government-Sponsored Enterprises Risk
A security backed by the U.S. Treasury or the full faith and credit of the United States is guaranteed only as to the timely payment of interest and principal when held to maturity. The market prices for such securities are not guaranteed and will fluctuate. Securities held by the Fund that are issued by government-sponsored enterprises, such as the Federal National Mortgage Association (‘‘Fannie Mae’’), Federal Home Loan Mortgage Corporation (‘‘Freddie Mac’’), Federal Home Loan Bank (‘‘FHLB’’), and the Federal Farm Credit Bank (“FFCB”), are not guaranteed by the U.S. Treasury and are not backed by the full faith and credit of the U.S. government, and no assurance can be given that the U.S. government will provide financial support if these organizations do not have the funds to meet future payment obligations. U.S. government securities and securities of government-sponsored entities are also subject to credit risk, interest rate risk and market risk. The rising U.S. national debt may lead to adverse impacts on the value of U.S. government securities due to potentially higher costs for the U.S. government to obtain new financing.
(American Beacon NIS Core Plus Bond Fund - Classes A, C, Y and R6) | (American Beacon NIS Core Plus Bond Fund) | U.S. Treasury Obligations Risk  
Prospectus: rr_ProspectusTable  
Risk [Text Block] rr_RiskTextBlock
U.S. Treasury Obligations Risk
The value of U.S. Treasury obligations may vary due to changes in interest rates. In addition, changes to the financial condition or credit rating of the U.S. government may cause the value of the Fund’s investments in obligations issued by the U.S. Treasury to decline. Certain political events in the U.S., such as a prolonged government shutdown or potential default on the national debt, may also cause investors to lose confidence in the U.S. government and may cause the value of U.S. Treasury obligations to decline.
(American Beacon NIS Core Plus Bond Fund - Classes A, C, Y and R6) | (American Beacon NIS Core Plus Bond Fund) | Valuation Risk [Member]  
Prospectus: rr_ProspectusTable  
Risk [Text Block] rr_RiskTextBlock
Valuation Risk
Certain of the Fund’s assets may be valued at a price different from the price at which they can be sold. This risk may be especially pronounced for investments that are illiquid or may become illiquid, or securities that trade in relatively thin markets and/or markets that experience extreme volatility. The valuation of the Fund’s investments in an accurate and timely manner may be impacted by technological issues and/or errors by third party service providers, such as pricing services or accounting agents.
(American Beacon NIS Core Plus Bond Fund - Classes A, C, Y and R6) | (American Beacon NIS Core Plus Bond Fund) | Bloomberg US Aggregate Bond Index (Reflects no deduction for fees, expenses or taxes)  
Prospectus: rr_ProspectusTable  
1 Year rr_AverageAnnualReturnYear01 (13.01%)
Since Inception rr_AverageAnnualReturnSinceInception (6.23%)
(American Beacon NIS Core Plus Bond Fund - Classes A, C, Y and R6) | (American Beacon NIS Core Plus Bond Fund) | A Class  
Prospectus: rr_ProspectusTable  
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price) rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice 3.75%
Maximum Deferred Sales Charge (as a percentage) rr_MaximumDeferredSalesChargeOverOther 0.50% [1]
Management Fees (as a percentage of Assets) rr_ManagementFeesOverAssets 0.55%
Distribution and Service (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets 0.25%
Other Expenses (as a percentage of Assets): rr_OtherExpensesOverAssets 2.89%
Total Annual Fund Operating Expenses rr_ExpensesOverAssets 3.69%
Fee Waiver or Reimbursement rr_FeeWaiverOrReimbursementOverAssets (2.91%) [2]
Total Annual Fund Operating Expenses After Expense Reimbursement rr_NetExpensesOverAssets 0.78%
Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 $ 452
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 1,201
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 1,971
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 $ 3,986
1 Year rr_AverageAnnualReturnYear01 (16.28%)
Since Inception rr_AverageAnnualReturnSinceInception (6.91%)
Inception Date rr_AverageAnnualReturnInceptionDate Sep. 10, 2020
(American Beacon NIS Core Plus Bond Fund - Classes A, C, Y and R6) | (American Beacon NIS Core Plus Bond Fund) | C Class  
Prospectus: rr_ProspectusTable  
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price) rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice none
Maximum Deferred Sales Charge (as a percentage) rr_MaximumDeferredSalesChargeOverOther 1.00%
Management Fees (as a percentage of Assets) rr_ManagementFeesOverAssets 0.55%
Distribution and Service (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets 1.00%
Other Expenses (as a percentage of Assets): rr_OtherExpensesOverAssets 2.91%
Total Annual Fund Operating Expenses rr_ExpensesOverAssets 4.46%
Fee Waiver or Reimbursement rr_FeeWaiverOrReimbursementOverAssets (2.93%) [2]
Total Annual Fund Operating Expenses After Expense Reimbursement rr_NetExpensesOverAssets 1.53%
Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 $ 256
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 1,083
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 2,021
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 4,411
Expense Example, No Redemption, 1 Year rr_ExpenseExampleNoRedemptionYear01 156
Expense Example, No Redemption, 3 Years rr_ExpenseExampleNoRedemptionYear03 1,083
Expense Example, No Redemption, 5 Years rr_ExpenseExampleNoRedemptionYear05 2,021
Expense Example, No Redemption, 10 Years rr_ExpenseExampleNoRedemptionYear10 $ 4,411
1 Year rr_AverageAnnualReturnYear01 (14.63%)
Since Inception rr_AverageAnnualReturnSinceInception (6.06%)
Inception Date rr_AverageAnnualReturnInceptionDate Sep. 10, 2020
(American Beacon NIS Core Plus Bond Fund - Classes A, C, Y and R6) | (American Beacon NIS Core Plus Bond Fund) | Y Class  
Prospectus: rr_ProspectusTable  
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price) rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice none
Maximum Deferred Sales Charge (as a percentage) rr_MaximumDeferredSalesChargeOverOther none
Management Fees (as a percentage of Assets) rr_ManagementFeesOverAssets 0.55%
Distribution and Service (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets none
Other Expenses (as a percentage of Assets): rr_OtherExpensesOverAssets 2.87%
Total Annual Fund Operating Expenses rr_ExpensesOverAssets 3.42%
Fee Waiver or Reimbursement rr_FeeWaiverOrReimbursementOverAssets (2.89%) [2]
Total Annual Fund Operating Expenses After Expense Reimbursement rr_NetExpensesOverAssets 0.53%
Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 $ 54
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 779
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 1,528
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 $ 3,507
Annual Return 2021 rr_AnnualReturn2021 (0.02%)
Annual Return 2022 rr_AnnualReturn2022 (12.76%)
Year to Date Return, Label rr_YearToDateReturnLabel The calendar year-to-date total return as of March 31, 2023 was 3.05%.
Bar Chart, Year to Date Return rr_BarChartYearToDateReturn 3.05%
Bar Chart, Year to Date Return, Date rr_BarChartYearToDateReturnDate Mar. 31, 2023
Highest Quarterly Return, Label rr_HighestQuarterlyReturnLabel Highest Quarterly Return:2.29% 2nd Quarter 202101/01/2021 through 12/31/2022
Highest Quarterly Return rr_BarChartHighestQuarterlyReturn 2.29%
Highest Quarterly Return, Date rr_BarChartHighestQuarterlyReturnDate Jun. 30, 2021
Lowest Quarterly Return, Label rr_LowestQuarterlyReturnLabel Lowest Quarterly Return:-5.61% 1st Quarter 202201/01/2021 through 12/31/2022
Lowest Quarterly Return rr_BarChartLowestQuarterlyReturn (5.61%)
Lowest Quarterly Return, Date rr_BarChartLowestQuarterlyReturnDate Mar. 31, 2022
1 Year rr_AverageAnnualReturnYear01 (12.76%)
Since Inception rr_AverageAnnualReturnSinceInception (5.12%)
Inception Date rr_AverageAnnualReturnInceptionDate Sep. 10, 2020
(American Beacon NIS Core Plus Bond Fund - Classes A, C, Y and R6) | (American Beacon NIS Core Plus Bond Fund) | Y Class | After Taxes on Distributions  
Prospectus: rr_ProspectusTable  
1 Year rr_AverageAnnualReturnYear01 (13.79%)
Since Inception rr_AverageAnnualReturnSinceInception (6.04%)
(American Beacon NIS Core Plus Bond Fund - Classes A, C, Y and R6) | (American Beacon NIS Core Plus Bond Fund) | Y Class | After Taxes on Distributions and Sales  
Prospectus: rr_ProspectusTable  
1 Year rr_AverageAnnualReturnYear01 (7.53%)
Since Inception rr_AverageAnnualReturnSinceInception (4.21%)
(American Beacon NIS Core Plus Bond Fund - Classes A, C, Y and R6) | (American Beacon NIS Core Plus Bond Fund) | R6 Class  
Prospectus: rr_ProspectusTable  
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price) rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice none
Maximum Deferred Sales Charge (as a percentage) rr_MaximumDeferredSalesChargeOverOther none
Management Fees (as a percentage of Assets) rr_ManagementFeesOverAssets 0.55%
Distribution and Service (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets none
Other Expenses (as a percentage of Assets): rr_OtherExpensesOverAssets 2.88%
Total Annual Fund Operating Expenses rr_ExpensesOverAssets 3.43%
Fee Waiver or Reimbursement rr_FeeWaiverOrReimbursementOverAssets (3.00%) [2]
Total Annual Fund Operating Expenses After Expense Reimbursement rr_NetExpensesOverAssets 0.43%
Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 $ 44
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 772
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 1,524
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 $ 3,509
1 Year rr_AverageAnnualReturnYear01 (12.67%)
Since Inception rr_AverageAnnualReturnSinceInception (5.02%)
Inception Date rr_AverageAnnualReturnInceptionDate Sep. 10, 2020
[1]
1 A contingent deferred sales charge (‘‘CDSC’’) of 0.50% will be charged on certain purchases of $1,000,000 or more of A Class shares that are redeemed in whole or part within 18 months of purchase.
[2]
2 American Beacon Advisors, Inc. (the “Manager”) has contractually agreed to waive fees and/or reimburse expenses of the Fund’s A Class, C Class, Y Class, and R6 Class shares, as applicable, through May 31, 2024 to the extent that Total Annual Fund Operating Expenses exceed 0.78% for the A Class, 1.53% for the C Class, 0.53% for the Y Class, and 0.43% for the R6 Class (excluding taxes, interest, brokerage commissions, acquired fund fees and expenses, securities lending fees, expenses associated with securities sold short, litigation, and other extraordinary expenses). The contractual expense reimbursement can be changed or terminated only in the discretion and with the approval of a majority of the Fund’s Board of Trustees. The Manager will itself waive fees and/or reimburse expenses of the Fund to maintain the contractual expense ratio caps for each applicable class of shares or make arrangements with other service providers to do so. The Manager may also, from time to time, voluntarily waive fees and/or reimburse expenses of the Fund. The Manager can be reimbursed by the Fund for any contractual or voluntary fee waivers or expense reimbursements if reimbursement to the Manager (a) occurs within three years from the date of the Manager’s waiver/reimbursement and (b) does not cause the Total Annual Fund Operating Expenses of a class to exceed the lesser of the contractual percentage limit in effect at the time of the waiver/reimbursement or the time of the recoupment.