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(American Beacon Ninety One Emerging Markets Equity Fund - Class Y , R6 and R5) | (American Beacon Ninety One Emerging Markets Equity Fund)  
Prospectus: rr_ProspectusTable  
Objective [Heading] rr_ObjectiveHeading Investment Objective
Objective, Primary [Text Block] rr_ObjectivePrimaryTextBlock
The Fund’s investment objective is long-term capital growth.
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. More information  is available from your financial professional and in “Choosing Your Share Class” on page 18 of the Prospectus.
Shareholder Fees Caption [Text] rr_ShareholderFeesCaption Shareholder Fees (fees paid directly from your investment)
Operating Expenses Caption [Text] rr_OperatingExpensesCaption Annual Fund Operating Expenses (Expenses that you pay each year as a percentage of the value of your investment)
Fee Waiver or Reimbursement over Assets, Date of Termination rr_FeeWaiverOrReimbursementOverAssetsDateOfTermination February 21, 2028
Other Expenses, New Fund, Based on Estimates [Text] rr_OtherExpensesNewFundBasedOnEstimates Other Expenses are based on estimated expenses for the current fiscal year.
Expense Example [Heading] rr_ExpenseExampleHeading Example
Expense Example Narrative [Text Block] rr_ExpenseExampleNarrativeTextBlock
This Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return each year and that the Fund’s operating expenses remain the same, except that the Example reflects the fee waiver/expense reimbursement arrangement for each share class through February 21, 2028. Although your actual costs may be higher or lower, based on these assumptions, whether you redeem or hold your shares, your costs would be:
Portfolio Turnover [Heading] rr_PortfolioTurnoverHeading Portfolio Turnover
Portfolio Turnover [Text Block] rr_PortfolioTurnoverTextBlock
The Fund pays transaction costs, such as commissions, when it buys and sells securities (or ‘‘turns over’’ its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Fund shares are held in a taxable account. These costs, which are not reflected in annual Fund operating expenses or in the Example, affect the Fund’s performance. The Predecessor Fund’s portfolio turnover rate for the fiscal year ended October 31, 2024 was 68% of the average value of the Predecessor Fund’s portfolio.
Portfolio Turnover, Rate rr_PortfolioTurnoverRate 68.00%
Strategy [Heading] rr_StrategyHeading Principal Investment Strategies
Strategy Narrative [Text Block] rr_StrategyNarrativeTextBlock
Under normal circumstances, the Fund invests at least 80% of its net assets (plus the amount of any borrowings for investment purposes) in equity securities of emerging market companies, and in other instruments, such as shares of exchange traded funds (“ETFs”), that have economic characteristics similar to such securities.
The equity securities in which the Fund invests are primarily common stocks, but may also include American Depositary Receipts (“ADRs”), European Depositary Receipts (“EDRs”) and Global Depositary Receipts (“GDRs” and, together with ADRs and EDRs, “Depositary Receipts”), and U.S. dollar-denominated foreign stocks traded on U.S. exchanges.  
Emerging market countries are countries that (i) major international financial institutions, such as the International Monetary Fund and the World Bank, consider to be less economically mature than developed nations, such as the United States or most nations in Western Europe or (ii) are represented in the MSCI Emerging Markets Index. Emerging market countries can include every nation whose market is not included in the MSCI World Index. As of December 31, 2024, the MSCI World Index includes Australia, Austria, Belgium, Canada, Denmark, Finland, France, Germany, Hong Kong, Ireland, Israel, Italy, Japan, Netherlands, New Zealand, Norway, Portugal, Singapore, Spain, Sweden, Switzerland, the UK and the U.S. The Fund considers a company to be an emerging market company if: (i) its principal securities trading market is in an emerging market country, (ii) alone or on a consolidated basis it derives 50% or more of its annual revenue or profits from goods produced, sales made or services performed in emerging market countries or has at least 50% of its assets in emerging markets countries or (iii) it is organized under the laws of, or has a principal office in, an emerging market country. By applying this test, it is possible that a particular company could be deemed to be located in more than one country. A company that is deemed to be located in both an emerging market country and a non-emerging market country may be considered by the Fund to be an emerging market company.
Although the Fund may invest in securities of companies with any market capitalization, the Fund generally invests in medium and large capitalization companies. The securities of companies held by the Fund may exhibit characteristics of either value stocks or growth stocks during the time they are held by the Fund. The Fund’s investments in equity securities may be denominated in foreign currencies, and the Fund may invest directly in foreign currencies. The Fund typically invests in securities of approximately 70-100 companies. Although the Fund seeks investments across a number of sectors, from time to time, the Fund may have significant positions in particular sectors, including the Information Technology sector. However, as the sector composition of the Fund’s portfolio changes over time, the Fund’s exposure to the Information Technology sector may be lower at a future date, and the Fund’s exposure to other market sectors may be higher.  
The Fund may have significant exposure to issuers located in, or with economic ties to, China and the Pacific Basin (which includes, among others, Japan, Australia, Taiwan and Hong Kong). However, as the geographic composition of the Fund’s portfolio changes over time, the Fund’s exposure to China and/or the Pacific Basin may decline, and the Fund’s exposure to other geographic areas may increase. The Fund may invest in A Shares of companies incorporated in China (“China A Shares”) that trade on the Shanghai Stock Exchange and the Shenzhen Stock Exchange through the Shanghai – Hong Kong and Shenzhen – Hong Kong Stock Connect programs (“Stock Connect”). Stock Connect is a mutual stock market access program designed to, among other things, enable foreign investments in China. The Fund may also invest in China through H Shares, which are shares of companies incorporated in China that are traded on the Hong Kong Stock Exchange.
In selecting investments to buy for the Fund, the sub-advisor combines a proprietary screening process with a fundamental research process to seek to identify high quality, attractively valued companies with improving operating performance that are receiving increasing investor attention as evidenced by stock price momentum which the sub-advisor measures by analyzing current stock price as compared to longer term moving averages of such stock price. The sub-advisor may sell a stock if the investment case is no longer valid, the stock reaches its fair value or the sub-advisor identifies a better investment opportunity.  
The sub-advisor’s investment process incorporates environmental, social and/or governance (“ESG”) analysis as a consideration in the assessment of potential portfolio investments. However, as ESG information is just one investment consideration, ESG considerations are not solely determinative in any investment decision made. In addition, the sub-advisor does not use ESG considerations to limit, restrict or otherwise exclude companies or sectors from the Fund’s investment universe. The sub-advisor may use  ESG research and/or ratings information provided by one or more third parties in performing this analysis and considering ESG risks.
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, and ETFs. The Fund may seek to earn additional income by lending its securities to certain qualified broker-dealers and institutions.
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 securities market index,the MSCI® Emerging Markets Index (Net), which is also the Fund’s benchmark index and was the benchmark index of the Fund’s predecessor, for the periods indicated. The Fund had not commenced operations prior to the date hereof. The Fund acquired the Ninety One Emerging Markets Equity Fund, a series of The Advisors’ Inner Circle Fund III (“Predecessor Fund”), in a reorganization that closed on February 21, 2025. In connection with that reorganization, the R5 Class shares of the Fund have adopted the performance history and financial statements of the I Shares of the Predecessor Fund, and the  Y Class shares of the Fund have adopted the performance history and financial statements of the A Shares of the Predecessor Fund. The bar chart and the table below show the performance of the Fund’s R5 Class shares for all periods. The table below also shows the performance of the Fund’s Y Class shares for all periods (which differs from the performance of the A Shares of the Predecessor Fund to the extent that the performance of the A Shares reflected the deduction of applicable sales charges).Performance information for R6 Class shares of the Fund is not provided because that share class of the Fund had not commenced operations prior to the date of this Prospectus and has not adopted the performance history and financial statements of any class of the Predecessor Fund. 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 securities market index,
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 R5 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 R5 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:
18.11% 4th Quarter 2020
01/01/2019 Through 12/31/2024
Lowest Quarterly Return:
-25.16% 1st Quarter 2020
01/01/2019 Through 12/31/2024
Performance Table Heading rr_PerformanceTableHeading Average annual total returns for periods ended December 31, 2024
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 R5 Class shares of the Fund; after-tax returns for other share classes will vary.
(American Beacon Ninety One Emerging Markets Equity Fund - Class Y , R6 and R5) | (American Beacon Ninety One Emerging Markets Equity Fund) | Risk Lose Money [Member]  
Prospectus: rr_ProspectusTable  
Risk [Text Block] rr_RiskTextBlock 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.
(American Beacon Ninety One Emerging Markets Equity Fund - Class Y , R6 and R5) | (American Beacon Ninety One Emerging Markets Equity Fund) | Risk Not Insured Depository Institution [Member]  
Prospectus: rr_ProspectusTable  
Risk [Text Block] rr_RiskTextBlock 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.
(American Beacon Ninety One Emerging Markets Equity Fund - Class Y , R6 and R5) | (American Beacon Ninety One Emerging Markets Equity Fund) | Currency Risk [Member]  
Prospectus: rr_ProspectusTable  
Risk [Text Block] rr_RiskTextBlock
Currency Risk
The Fund may have exposure to foreign currencies. 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.
(American Beacon Ninety One Emerging Markets Equity Fund - Class Y , R6 and R5) | (American Beacon Ninety One Emerging Markets Equity 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, its service providers and third-party fund distribution platforms, including the ability of shareholders to transact in the Fund’s shares, 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 and operational plans and systems of its service providers, its counterparties or the issuers of securities in which the Fund invests. The issuers of the Fund’s investments are likely to be dependent on computers for their operations and require ready access to their data and the internet to conduct their business. Thus, cybersecurity incidents could also affect issuers of the Fund’s investments, leading to significant loss of value.
(American Beacon Ninety One Emerging Markets Equity Fund - Class Y , R6 and R5) | (American Beacon Ninety One Emerging Markets Equity Fund) | Emerging Markets Risk [Member]  
Prospectus: rr_ProspectusTable  
Risk [Text Block] rr_RiskTextBlock
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 clearing and 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.
(American Beacon Ninety One Emerging Markets Equity Fund - Class Y , R6 and R5) | (American Beacon Ninety One Emerging Markets Equity Fund) | Environmental, Social, and/or Governance Investing Risk [Member]  
Prospectus: rr_ProspectusTable  
Risk [Text Block] rr_RiskTextBlock
Environmental, Social, and/or Governance Investing Risk
The use of environmental, social, and/or governance (“ESG”) considerations by  the sub-advisor may cause the Fund 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 use of any ESG investment considerations 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 or incorporate different ESG considerations. Although the  sub-advisor has established its own process to oversee ESG integration in accordance with the Fund’s strategies, successful integration of ESG factors will depend on the  sub-advisor’s skill in researching, identifying, and applying these factors, as well as on the availability of relevant data. The sub-advisor may use ESG research and/or ratings information provided by one or more third parties in performing this analysis and considering ESG risks. The regulatory landscape with respect to ESG investing in the United States is evolving and any future rules or regulations may require the Fund to change its investment process with respect to the integration of ESG factors.
(American Beacon Ninety One Emerging Markets Equity Fund - Class Y , R6 and R5) | (American Beacon Ninety One Emerging Markets Equity Fund) | Equity Investments Risk [Member]  
Prospectus: rr_ProspectusTable  
Risk [Text Block] rr_RiskTextBlock
Equity Investments Risk
Equity securities represent ownership interests in companies and are subject to investment risk, issuer risk and market risk. In general, the values of stocks and other equity securities fluctuate, and sometimes widely fluctuate, in response to changes in a company’s financial condition as well as general market, economic and political conditions and other factors. The Fund may experience a significant or complete loss on its investment in an equity security. In addition, stock prices may be particularly sensitive to rising interest rates, which increase borrowing costs and the costs of capital.  The Fund may invest in the following equity securities, which may expose the Fund to the following additional risks:
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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.
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Depositary Receipts Risk. Depositary receipts are subject to certain of the risks associated with investing directly in foreign securities, including, but not limited to, currency exchange rate fluctuations, political and financial instability in the home country of a particular depositary receipt, less liquidity, more volatility, less government regulation and supervision and delays in transaction settlement.
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U.S. Dollar-Denominated Foreign Stocks Traded on U.S. Exchanges Risk. Foreign (non-U.S.) companies that list their stocks on U.S. exchanges may be exempt from certain accounting and corporate governance standards that apply to U.S. companies that list on the same exchange. Performance of these stocks can be impacted by political and financial instability in the home country of a particular foreign company, and delisting of these stocks could impact the  Fund‘s ability to transact in such securities and could significantly impact their liquidity and market price.
(American Beacon Ninety One Emerging Markets Equity Fund - Class Y , R6 and R5) | (American Beacon Ninety One Emerging Markets Equity 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 may 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, recordkeeping 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. Additionally, trading in foreign markets generally involves higher transaction costs than trading in U.S. 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, including tariffs, trade disputes and sanctions. 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 Ninety One Emerging Markets Equity Fund - Class Y , R6 and R5) | (American Beacon Ninety One Emerging Markets Equity Fund) | Geographic Concentration Risk [Member]  
Prospectus: rr_ProspectusTable  
Risk [Text Block] rr_RiskTextBlock
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, market, 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. A decline in the economies or financial markets of one country or region may adversely affect the economies or financial markets of another.
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China Investment Risk.  Investing in securities of Chinese issuers 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, vulnerability to competition from other emerging economies in Asia, potential for increased trade tariffs, embargoes, sanctions and other trade limitations, and custody risks associated with programs used to access Chinese securities.
Confiscatory taxation, potentially frequent changes in the law, and political, economic or social instability or other developments could adversely affect and significantly diminish the values of the Chinese companies in which the Fund invests. The securities markets of China are emerging markets characterized by a relatively small number of equity issues and relatively low trading volume, resulting in decreased liquidity, greater price volatility, and potentially fewer investment opportunities.
Internal social unrest or confrontations with other neighboring countries, including military conflicts in response to such events, may also disrupt economic development in China and result in a greater risk of currency fluctuations, currency non-convertibility, interest rate fluctuations and higher rates of inflation.
Adverse changes to the economic conditions of its primary trading partners may adversely affect China’s economy and the Fund’s investments. China’s economy also may be adversely impacted by a reduction in spending on Chinese products and services.
In addition, if China were to exert its authority so as to alter the economic, political, or legal structures, or the existing social policy of Hong Kong or Taiwan, investor and business confidence in Hong Kong or Taiwan could be negatively affected, which in turn could negatively affect markets and business performance and have an adverse effect on the Fund’s investments.
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China A-Shares. Purchase and ownership of China A-Shares is generally restricted to Chinese investors and are only accessible to foreign investors who are Qualified Foreign Institutional Investors (“QFIIs”) or who participate in the Shanghai-Hong Kong and Shenzhen-Hong Kong Stock Connect Programs (“Stock Connect”). The existence of a liquid trading market for China A-Shares may depend on whether there is supply of, and demand for, China A-Shares. The exchanges on which China A-Shares are traded are undergoing development and the market capitalization of, and trading volumes on, the exchanges on which China A Shares are traded may be lower than those in more developed financial markets. Comparatively lower trading volumes may well result in potential illiquidity in the securities markets and have an adverse impact on the prices of Chinese securities in which the Fund invests. Market volatility, trading suspensions or government intervention with respect to individual issuers, and settlement difficulties in the China A-Shares markets may result in significant fluctuation in the prices of the securities traded on such markets and thereby changes in the Fund’s net asset value.
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Investing Through Stock Connect.  The Fund may invest in China A-Shares (shares of publicly traded companies based in mainland China) listed and traded on the Shanghai Stock Exchange through the Shanghai-Hong Kong Stock Connect program, as well as China A-Shares listed and traded on the Shenzhen-Hong Kong Stock Connect program (collectively, “Stock Connect”), or other stock exchanges in China which may participate in Stock Connect from time to time or in the future. Trading through Stock Connect is subject to a number of restrictions that may affect the Fund’s investments and returns. Stock Connect A-shares generally may not be sold, purchased or otherwise transferred other than through Stock Connect in accordance with applicable rules. There can be no assurance as to the program’s continued existence or whether future developments regarding the program may restrict or adversely affect the Fund’s investments or returns. Because certain transactions through Stock Connect may not be subject to certain investor protection programs, the Fund may be exposed to the risks of default of the broker(s) they engage in their trading in China A-Shares.
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Pacific Basin Securities Risk. The Pacific Basin region includes countries in various stages of economic development. Many Pacific Basin countries are considered undeveloped or developing and may be subject to greater social, political and economic instability than is the case in the U.S. and Western European countries. In addition, the region has historically been prone to natural disasters, the occurrence of which could negatively impact the economy of any country in the region. The economies of most countries in this region are heavily dependent on international trade and are accordingly affected by protective trade barriers and the economic conditions of their trading partners. These economies may depend upon only a few industries and/or exports of primary commodities and, therefore, are vulnerable to changes in commodity prices. The securities markets in the Pacific Basin may be substantially smaller, less liquid and more volatile than the major securities markets in the U.S., which may affect the Fund’s ability to acquire or dispose of securities at the price and time it wishes. Changes in the value of those countries’ currencies against the U.S. dollar will result in corresponding changes in the U.S. dollar value of the Fund’s assets denominated in those currencies.
(American Beacon Ninety One Emerging Markets Equity Fund - Class Y , R6 and R5) | (American Beacon Ninety One Emerging Markets Equity Fund) | Growth Companies Risk [Member]  
Prospectus: rr_ProspectusTable  
Risk [Text Block] rr_RiskTextBlock
Growth Companies Risk
Growth companies are expected to increase their earnings at a certain rate. When these expectations are not met or decrease, the prices of these stocks may decline, sometimes sharply, even if earnings showed an absolute increase. The Fund’s investments in growth companies may be more sensitive to company earnings and more volatile than the market in general primarily because their stock prices are based heavily on future expectations. If an assessment of the prospects for a company’s growth is incorrect, then the price of the company’s stock may fall or not approach the value placed on it. Growth company stocks may also lack the dividend yield that can cushion stock price declines in market downturns.
(American Beacon Ninety One Emerging Markets Equity Fund - Class Y , R6 and R5) | (American Beacon Ninety One Emerging Markets Equity 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 Ninety One Emerging Markets Equity Fund - Class Y , R6 and R5) | (American Beacon Ninety One Emerging Markets Equity 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 Ninety One Emerging Markets Equity Fund - Class Y , R6 and R5) | (American Beacon Ninety One Emerging Markets Equity Fund) | Large-Capitalization Companies Risk [Member]  
Prospectus: rr_ProspectusTable  
Risk [Text Block] rr_RiskTextBlock
Large-Capitalization Companies Risk
The securities of large market capitalization companies may underperform other segments of the market because such companies may be less responsive to competitive challenges and opportunities and, at times, such companies may be out of favor with investors. Many larger-capitalization companies also may be unable to attain the high growth rates of successful smaller companies, especially during periods of economic expansion.
(American Beacon Ninety One Emerging Markets Equity Fund - Class Y , R6 and R5) | (American Beacon Ninety One Emerging Markets Equity 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 or occurrence of a federal government shutdown and threats or the occurrence of a failure 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.
Although interest rates were unusually low in the  U.S. and abroad for a period of time, in 2022, the U.S. Federal Reserve (the “Federal Reserve”) and certain foreign central banks began to raise interest rates as part of their efforts to address rising inflation. The Federal Reserve and certain foreign central banks have started to lower interest rates, though economic or other factors, such as inflation, could stop such changes. It is difficult to accurately predict the pace at which interest rates might change, the timing, frequency or magnitude of any such changes in interest rates, or when such changes might stop or again reverse course. Additionally, various economic and political factors could cause the Federal Reserve or foreign central banks to change their approach in the future and such actions may result in an economic slowdown in the U.S. and abroad. Unexpected changes in interest rates could lead to significant 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. High public debt in the U.S. and other countries creates ongoing systemic and market risks and policymaking uncertainty. There is no assurance that the U.S. Congress will act to raise the nation’s debt ceiling; a failure to do so could cause market turmoil and substantial investment risks that cannot be fully predicted. Unexpected political, regulatory and diplomatic events within the U.S. and abroad may affect investor and consumer confidence and may adversely impact financial markets and the broader economy.
Some countries, including the U.S., have adopted more protectionist trade policies. Slowing global economic growth, imposition of tariffs and resulting impacts on global prices and supply chains; the rise in protectionist trade policies, inflationary pressures, changes to some major international trade agreements, risks associated with trade negotiations between countries and regions, including the U.S. and certain foreign nations, political or economic dysfunction within some nations, including the U.S., and dramatic changes in commodity and currency prices could have adverse effects that cannot be foreseen at the present time. In addition, if the U.S. dollar continues to be strong, it may decrease foreign demand for U.S. assets, which could have a negative impact on certain issuers and/or industries.
Tensions, war, or open conflict between nations, such as between Russia and Ukraine, in the Middle East or in eastern Asia could affect the economies of many nations, including the United States. The duration of ongoing hostilities in the Middle East and between Russia and Ukraine, and any 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.  
Regulators in the  U.S. have adopted a number of changes to regulations involving the markets and issuers, some of which apply to the Fund. The full effect of various newly adopted regulations is not currently known. Certain of these changes could limit the Fund’s ability to pursue its investment strategies or make certain investments, or may make it more costly for the Fund to operate, which may impact performance.  Additionally, it is possible that recently adopted regulations could be further revised or rescinded, which creates material uncertainty on their impact to the Fund.
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 in ways that cannot be foreseen, 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 Ninety One Emerging Markets Equity Fund - Class Y , R6 and R5) | (American Beacon Ninety One Emerging Markets Equity Fund) | Market Timing Risk [Member]  
Prospectus: rr_ProspectusTable  
Risk [Text Block] rr_RiskTextBlock
Market Timing Risk
The Fund is subject to the risk of market timing activities by investors due to the nature of the Fund’s investments, which requires the Fund, in certain instances, to fair value certain of its investments. 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 net asset value (“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 ability to execute efficient investment strategies.
(American Beacon Ninety One Emerging Markets Equity Fund - Class Y , R6 and R5) | (American Beacon Ninety One Emerging Markets Equity Fund) | Mid-Capitalization Companies Risk [Member]  
Prospectus: rr_ProspectusTable  
Risk [Text Block] rr_RiskTextBlock
Mid-Capitalization Companies Risk
Investing in the securities of mid-capitalization companies involves greater risk and the possibility of greater price volatility, which at times can be rapid and unpredictable, 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 changes in overall economic conditions, interest rates, borrowing costs and earnings.
(American Beacon Ninety One Emerging Markets Equity Fund - Class Y , R6 and R5) | (American Beacon Ninety One Emerging Markets Equity Fund) | Model and Data Risk [Member]  
Prospectus: rr_ProspectusTable  
Risk [Text Block] rr_RiskTextBlock
Model and Data Risk
Models and data are used to screen potential investments for the Fund. When models or data prove to be incorrect or incomplete, any decisions made in reliance thereon expose the Fund to potential risks. Some of the models used by the sub-advisor are predictive in nature. The use of predictive models has inherent risks. Because predictive models are usually constructed based on historical data supplied by third parties, the success of relying on such models may depend heavily on the accuracy and reliability of the supplied historical data. There is no assurance that the models are complete, accurate, or representative of future market cycles, nor will they always be beneficial to the Fund if they are accurate. Additionally, programs may become outdated or experience malfunctions which may not be identified by the sub-advisor and therefore may also result in losses to the Fund. These models may negatively affect Fund performance for various other reasons, including human judgment, inaccuracy of historical data and non-quantitative factors (such as market or trading system dysfunctions, investor fear or overreaction). The use of artificial intelligence or other evolving or emerging technologies presents significant risks and may exacerbate the aforementioned risks.
(American Beacon Ninety One Emerging Markets Equity Fund - Class Y , R6 and R5) | (American Beacon Ninety One Emerging Markets Equity 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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Exchange-Traded Funds (“ETFs”) Risk. Because ETFs are listed on an exchange, they may be subject to trading halts, may trade at a premium or discount to their net asset value (“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. Future legislative or regulatory changes, including changes in taxation, could impact the operation of ETFs.   
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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. Interest rate risk is the risk that rising interest rates could cause the value of such an investment to decline.   Credit risk is 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 that it may default completely.
(American Beacon Ninety One Emerging Markets Equity Fund - Class Y , R6 and R5) | (American Beacon Ninety One Emerging Markets Equity 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. 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 Ninety One Emerging Markets Equity Fund - Class Y , R6 and R5) | (American Beacon Ninety One Emerging Markets Equity Fund) | Sector Risk [Member]  
Prospectus: rr_ProspectusTable  
Risk [Text Block] rr_RiskTextBlock
Sector Risk
When the Fund focuses its investments in certain sectors of the economy, its performance could fluctuate more widely than if the Fund were invested more evenly across sectors. Issuers in the same economic sector may be similarly affected by economic or market events, making the Fund more vulnerable to
unfavorable developments in that economic sector than funds that invest more broadly. Additionally, individual sectors may be more volatile, and may perform differently, than the broader market. As the Fund’s portfolio changes over time, the Fund’s exposure to a particular sector may become higher or lower.
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Information Technology Sector Risk. The Information Technology sector includes companies engaged in software and services, technology hardware and storage peripherals, electronic equipment and components, and semiconductors and semiconductor equipment. Information technology companies face intense competition, both domestically and internationally, which may have an adverse effect on profit margins. Information technology companies may have limited product lines, markets, financial resources or personnel. The products of information technology companies may face rapid product obsolescence due to technological developments and frequent new product introduction, unpredictable changes in growth rates and competition for the services of qualified personnel. Failure to introduce new products, develop and maintain a loyal customer base or achieve general market acceptance for their products could have a material adverse effect on a company’s business. Companies in the Information Technology sector also may be subject to increased government scrutiny or adverse government or regulatory action. Additionally, companies in the Information Technology sector are heavily dependent on intellectual property and the loss of patent, copyright or trademark protections may adversely affect the profitability of these companies. The market prices of information technology-related securities tend to exhibit a greater degree of market risk and sharp price fluctuations than other types of securities. These securities may fall in and out of favor with investors rapidly, which may cause sudden selling and dramatically lower market prices.
(American Beacon Ninety One Emerging Markets Equity Fund - Class Y , R6 and R5) | (American Beacon Ninety One Emerging Markets Equity Fund) | Securities Lending Risk [Member]  
Prospectus: rr_ProspectusTable  
Risk [Text Block] rr_RiskTextBlock
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.
(American Beacon Ninety One Emerging Markets Equity Fund - Class Y , R6 and R5) | (American Beacon Ninety One Emerging Markets Equity 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 Ninety One Emerging Markets Equity Fund - Class Y , R6 and R5) | (American Beacon Ninety One Emerging Markets Equity 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 Ninety One Emerging Markets Equity Fund - Class Y , R6 and R5) | (American Beacon Ninety One Emerging Markets Equity Fund) | Value Stocks Risk [Member]  
Prospectus: rr_ProspectusTable  
Risk [Text Block] rr_RiskTextBlock
Value Stocks Risk
Value stocks are subject to the risk that their intrinsic or full value may never be realized by the market, that a stock judged to be undervalued may be appropriately priced, or that their prices may decline. Although value stocks tend to be inexpensive relative to their earnings, they can continue to be inexpensive for long periods of time. 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.
(American Beacon Ninety One Emerging Markets Equity Fund - Class Y , R6 and R5) | (American Beacon Ninety One Emerging Markets Equity Fund) | MSCI® Emerging Markets Index (USD) (Reflects no deduction for fees, expenses or taxes, other than withholding taxes, as noted)  
Prospectus: rr_ProspectusTable  
1 Year rr_AverageAnnualReturnYear01 7.50% [1]
5 Years rr_AverageAnnualReturnYear05 1.70% [1]
Since Inception rr_AverageAnnualReturnSinceInception 3.84% [1]
(American Beacon Ninety One Emerging Markets Equity Fund - Class Y , R6 and R5) | (American Beacon Ninety One Emerging Markets Equity 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 0.75%
Distribution and Service (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets none
Other Expenses (as a percentage of Assets): rr_OtherExpensesOverAssets 0.30% [2]
Total Annual Fund Operating Expenses rr_ExpensesOverAssets 1.05% [3]
Fee Waiver or Reimbursement rr_FeeWaiverOrReimbursementOverAssets (0.13%) [4]
Total Annual Fund Operating Expenses After Expense Reimbursement rr_NetExpensesOverAssets 0.92%
Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 $ 94
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 $ 293
1 Year rr_AverageAnnualReturnYear01 12.56%
5 Years rr_AverageAnnualReturnYear05 1.51%
Since Inception rr_AverageAnnualReturnSinceInception 3.65%
Inception Date rr_AverageAnnualReturnInceptionDate Nov. 28, 2018
(American Beacon Ninety One Emerging Markets Equity Fund - Class Y , R6 and R5) | (American Beacon Ninety One Emerging Markets Equity 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 0.75%
Distribution and Service (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets none
Other Expenses (as a percentage of Assets): rr_OtherExpensesOverAssets 0.20% [2]
Total Annual Fund Operating Expenses rr_ExpensesOverAssets 0.95% [3]
Fee Waiver or Reimbursement rr_FeeWaiverOrReimbursementOverAssets (0.13%) [4]
Total Annual Fund Operating Expenses After Expense Reimbursement rr_NetExpensesOverAssets 0.82%
Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 $ 84
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 $ 262
(American Beacon Ninety One Emerging Markets Equity Fund - Class Y , R6 and R5) | (American Beacon Ninety One Emerging Markets Equity Fund) | R5 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 0.75%
Distribution and Service (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets none
Other Expenses (as a percentage of Assets): rr_OtherExpensesOverAssets 0.23% [2]
Total Annual Fund Operating Expenses rr_ExpensesOverAssets 0.98% [3]
Fee Waiver or Reimbursement rr_FeeWaiverOrReimbursementOverAssets (0.13%) [4]
Total Annual Fund Operating Expenses After Expense Reimbursement rr_NetExpensesOverAssets 0.85%
Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 $ 87
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 $ 271
Annual Return 2019 rr_AnnualReturn2019 20.52%
Annual Return 2020 rr_AnnualReturn2020 14.65%
Annual Return 2021 rr_AnnualReturn2021 (0.77%)
Annual Return 2022 rr_AnnualReturn2022 (23.13%)
Annual Return 2023 rr_AnnualReturn2023 10.46%
Annual Return 2024 rr_AnnualReturn2024 12.78%
Highest Quarterly Return, Label rr_HighestQuarterlyReturnLabel Highest Quarterly Return:18.11% 4th Quarter 202001/01/2019 Through 12/31/2024
Highest Quarterly Return rr_BarChartHighestQuarterlyReturn 18.11%
Highest Quarterly Return, Date rr_BarChartHighestQuarterlyReturnDate Dec. 31, 2020
Lowest Quarterly Return, Label rr_LowestQuarterlyReturnLabel Lowest Quarterly Return:-25.16% 1st Quarter 202001/01/2019 Through 12/31/2024
Lowest Quarterly Return rr_BarChartLowestQuarterlyReturn (25.16%)
Lowest Quarterly Return, Date rr_BarChartLowestQuarterlyReturnDate Mar. 31, 2020
1 Year rr_AverageAnnualReturnYear01 12.78%
5 Years rr_AverageAnnualReturnYear05 1.73%
Since Inception rr_AverageAnnualReturnSinceInception 3.88%
Inception Date rr_AverageAnnualReturnInceptionDate Nov. 28, 2018
(American Beacon Ninety One Emerging Markets Equity Fund - Class Y , R6 and R5) | (American Beacon Ninety One Emerging Markets Equity Fund) | R5 Class | Returns After Taxes on Distributions  
Prospectus: rr_ProspectusTable  
1 Year rr_AverageAnnualReturnYear01 12.70%
5 Years rr_AverageAnnualReturnYear05 1.19%
Since Inception rr_AverageAnnualReturnSinceInception 3.31%
(American Beacon Ninety One Emerging Markets Equity Fund - Class Y , R6 and R5) | (American Beacon Ninety One Emerging Markets Equity Fund) | R5 Class | Returns After Taxes on Distributions and Sales of Fund Shares  
Prospectus: rr_ProspectusTable  
1 Year rr_AverageAnnualReturnYear01 8.15%
5 Years rr_AverageAnnualReturnYear05 1.44%
Since Inception rr_AverageAnnualReturnSinceInception 3.11%
[1]
* Reflects the reinvestment of dividends after the deduction of withholding taxes, using a tax rate applicable to non-resident individuals who do not benefit from double taxation treaties.
[2]
1 Other Expenses are based on estimated expenses for the current fiscal year.
[3]
2 The Fund is the successor to the Ninety One Emerging Markets Equity Fund (the “Predecessor Fund”), pursuant to a reorganization that occurred on February 21, 2025 (“Closing Date”), in which the Y Class and R5 Class shares of the Fund adopted the financial statements and performance history of the A Shares and I Shares, respectively, of the Predecessor Fund. The Total Annual Fund Operating Expenses of the Fund’s Y Class and R5 Class shares do not correlate to the ratio of expenses to average net assets provided in the Financial Highlights for the A Shares and I Shares, respectively, of the Predecessor Fund, but instead reflect the Fund’s estimated expenses.
[4]
3 American Beacon Advisors, Inc. (the “Manager”) has contractually agreed to waive fees and/or reimburse expenses of the Fund’s  Y Class, R6 Class, and R5 Class shares, as applicable,   through February 21, 2028,  or, if longer, three years following the Closing Date to the extent that Total Annual Fund Operating Expenses exceed 0.92% for the Y Class, 0.82% for the R6 Class, and 0.85% for the R5 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 can be reimbursed by the Fund for any contractual 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.