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(American Beacon Alpha Quant Core Fund℠)  
Prospectus: rr_ProspectusTable  
Objective [Heading] rr_ObjectiveHeading Investment Objective
Objective, Primary [Text Block] rr_ObjectivePrimaryTextBlock
The Fund's investment objective is long-term capital appreciation.
Expense [Heading] rr_ExpenseHeading Fees and Expenses of the Fund
Expense Narrative [Text Block] rr_ExpenseNarrativeTextBlock
This table describes the fees and expenses that you may pay if you buy and hold shares of the Fund. More information is available from your financial professional and in "Choosing Your Share Class" on page 37 of the Prospectus. Although the Fund does not impose any sales charge on Y Class shares, you may pay a commission to your broker on your purchases and sales of those shares, which is not reflected in the tables or Example below.
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 October 31, 2020
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 October 31, 2020. Although your actual costs may be higher or lower, based on these assumptions, your costs would be:
Portfolio Turnover [Heading] rr_PortfolioTurnoverHeading Portfolio Turnover
Portfolio Turnover [Text Block] rr_PortfolioTurnoverTextBlock
The Fund pays transaction costs, such as commissions, when it buys and sells securities (or ''turns over'' its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Fund shares are held in a taxable account. These costs, which are not reflected in annual Fund operating expenses or in the Example, affect the Fund's performance. During the most recent fiscal year, the Fund's portfolio turnover rate was 65% of the average value of its portfolio.
Portfolio Turnover, Rate rr_PortfolioTurnoverRate 65.00%
Strategy [Heading] rr_StrategyHeading Principal Investment Strategies
Strategy Narrative [Text Block] rr_StrategyNarrativeTextBlock
The Fund seeks to achieve its investment objective by implementing a quantitative approach to investing in U.S. large and mid-cap stocks. The Fund is managed pursuant to a proprietary fundamentally-based, systematic process of Alpha Quant Advisors, LLC ("Alpha Quant"), the Fund's sub-advisor. On a quarterly basis, this process involves the evaluation of each portfolio holding for relative attractiveness based on Alpha Quant's criteria, including profitability, free cash flow yield, debt leverage and valuation. If a portfolio holding no longer meets Alpha Quant's criteria, it may be sold and the proceeds reinvested in a new holding. This is done to maintain a portfolio of stocks most reflective of the fundamental characteristics targeted by Alpha Quant, which may vary based on market conditions.
Alpha Quant employs a proprietary methodology to select a blend of the stocks of U.S. large and mid-cap high-quality and value companies for the Fund. Alpha Quant defines high-quality companies as large and mid-sized companies that display above market average profitability, as measured by return on invested capital, profit margins, and labor productivity. Alpha Quant defines value companies as large- and mid-sized companies that display high levels of excess cash generated by their businesses, low debt, and are relatively undervalued as compared to the broader U.S. equity market.
Securities are purchased and sold based on Alpha Quant's assessment regarding a company's profitability, valuation and earnings expectations. The Fund may have significant exposure to 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 invests in U.S. common stocks. The Fund may also invest cash balances in other investment companies, including money market funds, and may purchase and sell futures contracts on stock indices to gain market exposure on cash balances or reduce market exposure in anticipation of liquidity needs. The Fund may seek to earn additional income by lending its securities to certain qualified broker-dealers and institutions on a short-term or long-term basis.
Risk [Heading] rr_RiskHeading Principal Risks
Risk Narrative [Text Block] rr_RiskNarrativeTextBlock
There is no assurance that the Fund will achieve its investment objective and you could lose part or all of your investment in the Fund. The Fund is not designed for investors who need an assured level of income and is intended to be a long-term investment. The Fund is not a complete investment program and may not be appropriate for all investors. Investors should carefully consider their own investment goals and risk tolerance before investing in the Fund. The principal risks of investing in the Fund listed below are presented in alphabetical order, and not in order of importance or potential exposure, to facilitate your ability to find particular risks and compare them with the risks of other funds. Each risk summarized below is considered a "principal risk" of investing in the Fund, regardless of the order in which it appears.
Cybersecurity and Operational Risk
The Fund and its service providers, and shareholders' ability to transact with the Fund, may be negatively impacted due to operational risks arising from, among other problems: human errors, systems and technology disruptions or failures, or cybersecurity incidents. Cybersecurity incidents may allow an unauthorized party to gain access to Fund assets, customer data, or proprietary information, or cause the Fund or its service providers, as well as the securities trading venues and their service providers, to suffer data corruption or lose operational functionality. 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. 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.
Equity Investments Risk
Equity securities are subject to investment risk and market risk. The Fund may invest in the following equity securities, which may expose the Fund to the following additional risks:
  • Common Stock Risk. The value of a company's common stock may fall as a result of factors affecting the company, companies in the same industry or sector, or the financial markets overall. Common stock generally is subordinate to preferred stock upon the liquidation or bankruptcy of the issuing company.
Futures Contracts Risk
Futures contracts are derivative instruments pursuant to a contract where the parties agree to a fixed price for an agreed amount of securities or other underlying assets at an agreed date. The use of such derivative instruments may expose the Fund to additional risks that it would not be subject to if it invested directly in the securities underlying those derivatives. There may at times be an imperfect correlation between the movement in the prices of futures contracts and the value of their underlying instruments or indexes. There can be no assurance that any strategy used will succeed. There also can be no assurance that, at all times, a liquid market will exist for offsetting a futures contract that the Fund has previously bought or sold and this may result in the inability to close a futures contract when desired. Futures contracts may experience potentially dramatic price changes, which will increase the volatility of the Fund and may involve a small investment of cash (the amount of initial and variation margin) relative to the magnitude of the risk assumed (the potential increase or decrease in the price of the futures contract).
Growth Companies Risk
Growth companies are expected to increase their earnings at a certain rate. When these expectations are not met, the prices of these stocks may go down, even if earnings showed an absolute increase. 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 a sub-advisor's 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 that a subadvisor has placed on it. Growth company stocks may also lack the dividend yield that can cushion stock price declines in market downturns.
Investment Risk
An investment in the Fund is not a deposit with a bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency. When you sell your shares of the Fund, they could be worth less than what you paid for them. Therefore, you may lose money by investing in the Fund.
Issuer Risk
The value of, and/or the return generated by, a security may decline for a number of reasons 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.
Large Capitalization Companies Risk
The securities of large market capitalization companies may underperform other segments of the market because such companies may be less responsive to competitive challenges and opportunities. Many larger capitalization companies also may be unable to attain the high growth rates of successful smaller companies, especially during periods of economic expansion.
Market Risk
The Fund is subject to the risk that the securities markets will move down, sometimes rapidly and unpredictably based on overall economic conditions and other factors. The value of a security may decline due to general market conditions which are not specifically related to a particular company, such as real or perceived adverse economic conditions, changes in the general outlook for corporate earnings, changes in interest or currency rates or adverse investment sentiment generally. Changes in the financial condition of a single issuer can impact a market as a whole. A rise in protectionist trade policies, risks associated with the United Kingdom's vote to leave the European Union, the risk of a trade dispute between the United States and China, and the possibility of changes to some international trade agreements, could affect the economies of many nations, including the United States, in ways that cannot necessarily be foreseen at the present time. The severity or duration of adverse economic conditions may also be affected by policy changes made by governments or quasi-governmental organizations. In addition, political and governmental events within the U.S. and abroad may affect investor and consumer confidence and may adversely impact financial markets and the broader economy, perhaps suddenly and to a significant degree.
Mid-Capitalization Companies Risk
Investing in the securities of mid-capitalization companies involves greater risk and the possibility of greater price volatility than investing in larger capitalization and more established companies. Since mid-capitalization companies may have narrower commercial markets and more limited operating history, product lines, and managerial and financial resources than larger, more established companies, the securities of these companies may lack sufficient market liquidity, and they can be particularly sensitive to expected changes in interest rates, borrowing costs and earnings.
Model and Data Risk
The success of the sub-advisor's investment strategy depends largely on the effectiveness of its quantitative research models and investment programs. 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 or 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).
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. The Fund will be subject to the risks associated with investments in those companies, including but not limited to the following:
  • Money Market Funds. Investments in money market funds are subject to interest rate risk, credit risk, and market risk.
Sector Risk
When the Fund focuses its investments in certain sectors of the economy, its performance may be driven largely by sector performance and could fluctuate more widely than if the Fund were invested more evenly across sectors. 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.
  • Information Technology Sector Risk. The market prices of information technology-related securities tend to exhibit a greater degree of market risk and sharp price fluctuations than other types of securities. These securities may fall in and out of favor with investors rapidly, which may cause sudden selling and dramatically lower market prices.
Securities Lending Risk
The borrower of a Fund's securities must provide collateral in the form of cash or cash equivalents, securities of the U.S. Government and its agencies and instrumentalities, approved bank letters of credit, or other forms of collateral that are permitted by the SEC for registered investment companies in an amount at least equal to the value of the loaned securities. For loans collateralized with cash, the Fund invests the cash in other securities. To the extent the Fund lends its securities, it may be subject to the following risks: i) borrowers of the Fund's securities may provide collateral in the form of cash that is reinvested in securities, ii) the securities in which the cash collateral is invested may not perform sufficiently to cover the return collateral payments owed to borrowers, iii) delays may occur in the recovery of securities from borrowers, which could interfere with the Fund's ability to vote proxies or to settle transactions, and iv) there is the risk of possible loss of rights in the collateral should the borrower fail financially.
Securities Selection Risk
Securities selected by the sub-advisor for the Fund may not perform to expectations. This could result in the Fund's underperformance compared to its benchmark index(es), or other funds with similar investment objectives or strategies.
Value Stocks Risk
Value stocks are subject to the risk that their intrinsic value may never be realized by the market or that their prices may decline. The Fund's investments in value stocks seek to limit potential downside price risk over time; however, value stock prices still may decline substantially. In addition, the Fund may produce more modest gains as a trade-off for this potentially lower risk. The Fund's investment in value stocks could cause the Fund to underperform funds that use a growth or non-value approach to investing or have a broader investment style.
Risk Lose Money [Text] rr_RiskLoseMoney There is no assurance that the Fund will achieve its investment objective and you could lose part or all of your investment in the Fund.
Risk Not Insured Depository Institution [Text] rr_RiskNotInsuredDepositoryInstitution An investment in the Fund is not a deposit with a bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.
Bar Chart and Performance Table [Heading] rr_BarChartAndPerformanceTableHeading Fund Performance
Performance Narrative [Text Block] rr_PerformanceNarrativeTextBlock
The bar chart and table below provide an indication of risk by showing changes in the Fund's performance over time. The bar chart shows the Fund's performance for the last calendar year. The table shows how the Fund's average annual total returns compare to a broad-based market index for the periods indicated.
You may obtain updated performance information on the Fund's website at www.americanbeaconfunds.com. Past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future.
Bar Chart [Heading] rr_BarChartHeading Calendar year total returns for Investor Class Shares. Year Ended 12/31
Bar Chart Closing [Text Block] rr_BarChartClosingTextBlock
Highest Quarterly Return:
8.10% 3rd Quarter 2018
01/01/2018 through 12/31/2018
Lowest Quarterly Return:
-16.13% 4th Quarter 2018
01/01/2018 through 12/31/2018
The calendar year-to-date total return as of September 30, 2019 was 12.40%
Performance Table Heading rr_PerformanceTableHeading Average annual total returns for periods ended December 31, 2018
Performance Table Closing [Text Block] rr_PerformanceTableClosingTextBlock
After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local income taxes. Actual after-tax returns depend on an investor's tax situation and may differ from those shown. The return after taxes on distributions and sale of Fund shares may exceed the return before taxes due to an assumed tax benefit from any losses on a sale of Fund shares at the end of the measurement period. If you are a tax-exempt entity or hold your Fund shares through a tax-deferred arrangement, such as an individual retirement account ("IRA") or a 401(k) plan, the after-tax returns do not apply to your situation. After-tax returns are shown only for Investor Class shares; after-tax returns for other share classes will vary.
Performance Table Uses Highest Federal Rate rr_PerformanceTableUsesHighestFederalRate After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local income taxes.
Performance Table Not Relevant to Tax Deferred rr_PerformanceTableNotRelevantToTaxDeferred If you 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 Explanation after Tax Higher rr_PerformanceTableExplanationAfterTaxHigher The return after taxes on distributions and sale of Fund shares may exceed the return before taxes due to an assumed tax benefit from any losses on a sale of Fund shares at the end of the measurement period.
Performance Past Does Not Indicate Future [Text] rr_PerformancePastDoesNotIndicateFuture Past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future.
Performance Information Illustrates Variability of Returns [Text] rr_PerformanceInformationIllustratesVariabilityOfReturns The bar chart and table below provide an indication of risk by showing changes in the Fund's performance over time. The bar chart shows the Fund's performance for the last calendar year. The table shows how the Fund's average annual total returns compare to a broad-based market index for the periods indicated.
Performance Table One Class of after Tax Shown [Text] rr_PerformanceTableOneClassOfAfterTaxShown After-tax returns are shown only for Investor Class shares; after-tax returns for other share classes will vary.
Performance Availability Website Address [Text] rr_PerformanceAvailabilityWebSiteAddress www.americanbeaconfunds.com
(American Beacon Alpha Quant Core Fund℠) | S&P 500 Index (Reflects no deduction for fees, expenses or taxes)  
Prospectus: rr_ProspectusTable  
1 Year rr_AverageAnnualReturnYear01 (4.38%)
Since Inception rr_AverageAnnualReturnSinceInception 5.79%
(American Beacon Alpha Quant Core Fund℠) | Class Y  
Prospectus: rr_ProspectusTable  
Maximum sales charge imposed on purchases (as a percentage of offering price) rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice none
Maximum deferred sales charge (as a percentage of the lower of original offering price or redemption proceeds) rr_MaximumDeferredSalesChargeOverOther none
Management Fee rr_ManagementFeesOverAssets 0.60%
Distribution and/or Services (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets none
Other Expenses rr_OtherExpensesOverAssets 3.63%
Total Annual Fund Operating Expenses rr_ExpensesOverAssets 4.23%
Fee Waiver and/or expense reimbursement rr_FeeWaiverOrReimbursementOverAssets (3.54%) [1]
Total Annual Fund Operating Expenses after fee waiver and/or expense reimbursement rr_NetExpensesOverAssets 0.69% [2]
Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 $ 70
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 960
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 1,863
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 $ 4,182
1 Year rr_AverageAnnualReturnYear01 (6.42%)
Since Inception rr_AverageAnnualReturnSinceInception 4.54%
Inception Date of Class rr_AverageAnnualReturnInceptionDate Mar. 22, 2017
(American Beacon Alpha Quant Core Fund℠) | Institutional Class  
Prospectus: rr_ProspectusTable  
Maximum sales charge imposed on purchases (as a percentage of offering price) rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice none
Maximum deferred sales charge (as a percentage of the lower of original offering price or redemption proceeds) rr_MaximumDeferredSalesChargeOverOther none
Management Fee rr_ManagementFeesOverAssets 0.60%
Distribution and/or Services (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets none
Other Expenses rr_OtherExpensesOverAssets 3.60%
Total Annual Fund Operating Expenses rr_ExpensesOverAssets 4.20%
Fee Waiver and/or expense reimbursement rr_FeeWaiverOrReimbursementOverAssets (3.61%) [1]
Total Annual Fund Operating Expenses after fee waiver and/or expense reimbursement rr_NetExpensesOverAssets 0.59% [2]
Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 $ 60
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 944
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 1,843
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 $ 4,152
1 Year rr_AverageAnnualReturnYear01 (6.33%)
Since Inception rr_AverageAnnualReturnSinceInception 4.65%
Inception Date of Class rr_AverageAnnualReturnInceptionDate Mar. 22, 2017
(American Beacon Alpha Quant Core Fund℠) | Investor Class  
Prospectus: rr_ProspectusTable  
Maximum sales charge imposed on purchases (as a percentage of offering price) rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice none
Maximum deferred sales charge (as a percentage of the lower of original offering price or redemption proceeds) rr_MaximumDeferredSalesChargeOverOther none
Management Fee rr_ManagementFeesOverAssets 0.60%
Distribution and/or Services (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets none
Other Expenses rr_OtherExpensesOverAssets 8.16%
Total Annual Fund Operating Expenses rr_ExpensesOverAssets 8.76%
Fee Waiver and/or expense reimbursement rr_FeeWaiverOrReimbursementOverAssets (7.79%) [1]
Total Annual Fund Operating Expenses after fee waiver and/or expense reimbursement rr_NetExpensesOverAssets 0.97% [2]
Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 $ 99
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 1,854
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 3,479
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 $ 7,037
Annual Return 2018 rr_AnnualReturn2018 (6.71%)
Year to Date Return, Label rr_YearToDateReturnLabel The calendar year-to-date total return as of September 30, 2019 was 12.40%
Bar Chart, Year to Date Return rr_BarChartYearToDateReturn 12.40%
Bar Chart, Year to Date Return, Date rr_BarChartYearToDateReturnDate Sep. 30, 2019
Highest Quarterly Return, Label rr_HighestQuarterlyReturnLabel Highest Quarterly Return: 8.10% 3rd Quarter 2018 01/01/2018 through 12/31/2018
Highest Quarterly Return rr_BarChartHighestQuarterlyReturn 8.10%
Highest Quarterly Return, Date rr_BarChartHighestQuarterlyReturnDate Sep. 30, 2018
Lowest Quarterly Return, Label rr_LowestQuarterlyReturnLabel Lowest Quarterly Return: -16.13% 4th Quarter 2018 01/01/2018 through 12/31/2018
Lowest Quarterly Return rr_BarChartLowestQuarterlyReturn (16.13%)
Lowest Quarterly Return, Date rr_BarChartLowestQuarterlyReturnDate Dec. 31, 2018
1 Year rr_AverageAnnualReturnYear01 (6.71%)
Since Inception rr_AverageAnnualReturnSinceInception 4.21%
Inception Date of Class rr_AverageAnnualReturnInceptionDate Mar. 22, 2017
(American Beacon Alpha Quant Core Fund℠) | Investor Class | Returns After Taxes on Distributions  
Prospectus: rr_ProspectusTable  
1 Year rr_AverageAnnualReturnYear01 (9.09%)
Since Inception rr_AverageAnnualReturnSinceInception 2.55%
Inception Date of Class rr_AverageAnnualReturnInceptionDate Mar. 22, 2017
(American Beacon Alpha Quant Core Fund℠) | Investor Class | Returns After Taxes on Distributions and Sales of Fund Shares  
Prospectus: rr_ProspectusTable  
1 Year rr_AverageAnnualReturnYear01 (2.70%)
Since Inception rr_AverageAnnualReturnSinceInception 3.07%
Inception Date of Class rr_AverageAnnualReturnInceptionDate Mar. 22, 2017
(American Beacon Alpha Quant Dividend Fund℠)  
Prospectus: rr_ProspectusTable  
Objective [Heading] rr_ObjectiveHeading Investment Objective
Objective, Primary [Text Block] rr_ObjectivePrimaryTextBlock
The Fund's investment objective is long-term capital appreciation, with a secondary objective of current income.
Expense [Heading] rr_ExpenseHeading Fees and Expenses of the Fund
Expense Narrative [Text Block] rr_ExpenseNarrativeTextBlock
This table describes the fees and expenses that you may pay if you buy and hold shares of the Fund. More information is available from your financial professional and in "Choosing Your Share Class" on page 37 of the Prospectus. Although the Fund does not impose any sales charge on Y Class shares, you may pay a commission to your broker on your purchases and sales of those shares, which is not reflected in the tables or Example below.
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 October 31, 2020
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 October 31, 2020. Although your actual costs may be higher or lower, based on these assumptions, your costs would be:
Portfolio Turnover [Heading] rr_PortfolioTurnoverHeading Portfolio Turnover
Portfolio Turnover [Text Block] rr_PortfolioTurnoverTextBlock
The Fund pays transaction costs, such as commissions, when it buys and sells securities (or ''turns over'' its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Fund shares are held in a taxable account. These costs, which are not reflected in annual Fund operating expenses or in the Example, affect the Fund's performance. During the most recent fiscal year, the Fund's portfolio turnover rate was 34% of the average value of its portfolio.
Portfolio Turnover, Rate rr_PortfolioTurnoverRate 34.00%
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 the Fund's net assets (plus the amount of any borrowings for investment purposes) in dividend-paying securities. The Fund is managed pursuant to the proprietary fundamentally based, systematic process of Alpha Quant Advisors, LLC ("Alpha Quant"), the Fund's sub-advisor. On an annual basis, this process involves the evaluation of each portfolio holding for relative attractiveness based on Alpha Quant's criteria, including earnings growth, dividend growth and stability, creditworthiness, and dividend yield. If a portfolio holding no longer meets Alpha Quant's criteria, it may be sold, and the proceeds reinvested in a new holding. This is done to maintain a portfolio of stocks most reflective of the fundamental characteristics targeted by Alpha Quant, which may vary based on market conditions. The Fund typically holds a focused portfolio of approximately 30 stocks.
Alpha Quant invests in companies that have an established long-term record of paying and increasing their dividends, are financially strong, as measured by high creditworthiness and liquidity, and, at the same time, offer an attractive dividend yield. As a result of this targeted combination of consistent dividend payments, financial strength and yield, Alpha Quant's strategy is designed to avoid forfeiting quality for yield. Stocks are purchased and sold based on Alpha Quant's expectations regarding a company's dividend continuity and an attractive yield.
The Fund invests in U.S. common stocks and shares of real estate investment trusts ("REITs"). The Fund may also invest cash balances in other investment companies, including money market funds, and may purchase and sell futures contracts on stock indices to gain market exposure on cash balances or reduce market exposure in anticipation of liquidity needs. The Fund may seek to earn additional income by lending its securities to certain qualified broker-dealers and institutions on a short-term or long-term basis.
Risk [Heading] rr_RiskHeading Principal Risks
Risk Narrative [Text Block] rr_RiskNarrativeTextBlock
There is no assurance that the Fund will achieve its investment objectives and you could lose part or all of your investment in the Fund. The Fund is not designed for investors who need an assured level of current income and is intended to be a long-term investment. The Fund is not a complete investment program and may not be appropriate for all investors. Investors should carefully consider their own investment goals and risk tolerance before investing in the Fund. The principal risks of investing in the Fund listed below are presented in alphabetical order, and not in order of importance or potential exposure, to facilitate your ability to find particular risks and compare them with the risks of other funds. Each risk summarized below is considered a "principal risk" of investing in the Fund, regardless of the order in which it appears.
Cybersecurity and Operational Risk
The Fund and its service providers, and shareholders' ability to transact with the Fund, may be negatively impacted due to operational risks arising from, among other problems: human errors, systems and technology disruptions or failures, or cybersecurity incidents. Cybersecurity incidents may allow an unauthorized party to gain access to Fund assets, customer data, or proprietary information, or cause the Fund or its service providers, as well as the securities trading venues and their service providers, to suffer data corruption or lose operational functionality. 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. 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.
Dividend Risk
An issuer of stock held by the Fund may choose not to declare a dividend or the dividend rate might not remain at current levels. Dividend paying stocks might not experience the same level of earnings growth or capital appreciation as non-dividend paying stocks.
Equity Investments Risk
Equity securities are subject to investment risk and market risk. The Fund may invest in the following equity securities, which may expose the Fund to the following additional risks:
  • Common Stock Risk. The value of a company's common stock may fall as a result of factors affecting the company, companies in the same industry or sector, or the financial markets overall. Common stock generally is subordinate to preferred stock upon the liquidation or bankruptcy of the issuing company.
  • Real Estate Investment Trusts ("REITs") Risk. Investments in REITs are subject to the risks associated with investing in the real estate industry, including, among other risks: adverse developments affecting the real estate industry; declines in real property values; changes in interest rates; defaults by mortgagors or other borrowers and tenants; lack of availability of mortgage funds or financing; extended vacancies of properties, especially during economic downturns; casualty or condemnation losses; and governmental actions, such as changes to tax laws, zoning regulations or environmental regulations. REITs also are dependent upon the skills of their managers and are subject to heavy cash flow dependency or self-liquidation. Domestic REITs could be adversely affected by failure to qualify for tax-free "pass-through" of distributed net income and net realized gains under the Internal Revenue Code of 1986, as amended ("Internal Revenue Code"), or to maintain their exemption from registration under the Investment Company Act of 1940, as amended ("Investment Company Act"). REITs typically incur fees that are separate from those incurred by the Fund. Accordingly, the Fund's investment in REITs will result in the layering of expenses such that shareholders will indirectly bear a proportionate share of the REITs' operating expenses, in addition to paying Fund expenses. The value of REIT common stock may decline when interest rates rise.
Focused Holdings Risk
Because the Fund may have a focused portfolio, the increase or decrease of the value of a single investment may have a greater impact on the Fund's net asset value ("NAV") and total return when compared to other funds.
Futures Contracts Risk
Futures contracts are derivative instruments pursuant to a contract where the parties agree to a fixed price for an agreed amount of securities or other underlying assets at an agreed date. The use of such derivative instruments may expose the Fund to additional risks that it would not be subject to if it invested directly in the securities underlying those derivatives. There may at times be an imperfect correlation between the movement in the prices of futures contracts and the value of their underlying instruments or indexes. There can be no assurance that any strategy used will succeed. There also can be no assurance that, at all times, a liquid market will exist for offsetting a futures contract that the Fund has previously bought or sold and this may result in the inability to close a futures contract when desired. Futures contracts may experience potentially dramatic price changes, which will increase the volatility of the Fund and may involve a small investment of cash (the amount of initial and variation margin) relative to the magnitude of the risk assumed (the potential increase or decrease in the price of the futures contract).
Investment Risk
An investment in the Fund is not a deposit with a bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency. When you sell your shares of the Fund, they could be worth less than what you paid for them. Therefore, you may lose money by investing in the Fund.
Issuer Risk
The value of, and/or the return generated by, a security may decline for a number of reasons 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.
Large Capitalization Companies Risk
The securities of large market capitalization companies may underperform other segments of the market because such companies may be less responsive to competitive challenges and opportunities. Many larger capitalization companies also may be unable to attain the high growth rates of successful smaller companies, especially during periods of economic expansion.
Market Risk
The Fund is subject to the risk that the securities markets will move down, sometimes rapidly and unpredictably based on overall economic conditions and other factors. The value of a security may decline due to general market conditions which are not specifically related to a particular company, such as real or perceived adverse economic conditions, changes in the general outlook for corporate earnings, changes in interest or currency rates or adverse investment sentiment generally. Changes in the financial condition of a single issuer can impact a market as a whole. A rise in protectionist trade policies, risks associated with the United Kingdom's vote to leave the European Union, the risk of a trade dispute between the United States and China, and the possibility of changes to some international trade agreements, could affect the economies of many nations, including the United States, in ways that cannot necessarily be foreseen at the present time. The severity or duration of adverse economic conditions may also be affected by policy changes made by governments or quasi-governmental organizations. In addition, political and governmental events within the U.S. and abroad may affect investor and consumer confidence and may adversely impact financial markets and the broader economy, perhaps suddenly and to a significant degree.
Mid-Capitalization Companies Risk
Investing in the securities of mid-capitalization companies involves greater risk and the possibility of greater price volatility than investing in larger capitalization and more established companies. Since mid-capitalization companies may have narrower commercial markets and more limited operating history, product lines, and managerial and financial resources than larger, more established companies, the securities of these companies may lack sufficient market liquidity, and they can be particularly sensitive to expected changes in interest rates, borrowing costs and earnings.
Model and Data Risk
The success of the sub-advisor's investment strategy depends largely on the effectiveness of its quantitative research models and investment programs. 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 or 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).
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. The Fund will be subject to the risks associated with investments in those companies, including but not limited to the following:
  • Money Market Funds. Investments in money market funds are subject to interest rate risk, credit risk, and market risk.
Securities Lending Risk
The borrower of a Fund's securities must provide collateral in the form of cash or cash equivalents, securities of the U.S. Government and its agencies and instrumentalities, approved bank letters of credit, or other forms of collateral that are permitted by the SEC for registered investment companies in an amount at least equal to the value of the loaned securities. For loans collateralized with cash, the Fund invests the cash in other securities. To the extent the Fund lends its securities, it may be subject to the following risks: i) borrowers of the Fund's securities may provide collateral in the form of cash that is reinvested in securities, ii) the securities in which the cash collateral is invested may not perform sufficiently to cover the return collateral payments owed to borrowers, iii) delays may occur in the recovery of securities from borrowers, which could interfere with the Fund's ability to vote proxies or to settle transactions, and iv) there is the risk of possible loss of rights in the collateral should the borrower fail financially.
Securities Selection Risk
Securities selected by the sub-advisor for the Fund may not perform to expectations. This could result in the Fund's underperformance compared to its benchmark index(es), or other funds with similar investment objectives or strategies.
Value Stocks Risk
Value stocks are subject to the risk that their intrinsic value may never be realized by the market or that their prices may decline. The Fund's investments in value stocks seek to limit potential downside price risk over time; however, value stock prices still may decline substantially. In addition, the Fund may produce more modest gains as a trade-off for this potentially lower risk. The Fund's investment in value stocks could cause the Fund to underperform funds that use a growth or non-value approach to investing or have a broader investment style.
Risk Lose Money [Text] rr_RiskLoseMoney There is no assurance that the Fund will achieve its investment objectives and you could lose part or all of your investment in the Fund.
Risk Not Insured Depository Institution [Text] rr_RiskNotInsuredDepositoryInstitution An investment in the Fund is not a deposit with a bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.
Bar Chart and Performance Table [Heading] rr_BarChartAndPerformanceTableHeading Fund Performance
Performance Narrative [Text Block] rr_PerformanceNarrativeTextBlock
The bar chart and table below provide an indication of risk by showing changes in the Fund's performance over time. The bar chart shows the Fund's performance for the last calendar year. The table shows how the Fund's average annual total returns compare to a broad-based market index for the periods indicated.
You may obtain updated performance information on the Fund's website at www.americanbeaconfunds.com. Past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future.
Bar Chart [Heading] rr_BarChartHeading Calendar year total returns for Investor Class Shares. Year Ended 12/31
Bar Chart Closing [Text Block] rr_BarChartClosingTextBlock
Highest Quarterly Return:
7.62% 3rd Quarter 2018
01/01/2018 through 12/31/2018
Lowest Quarterly Return:
-9.88% 4th Quarter 2018
01/01/2018 through 12/31/2018
The calendar year-to-date total return as of September 30, 2019 was 22.73%
Performance Table Heading rr_PerformanceTableHeading Average annual total returns for periods ended December 31, 2018
Performance Table Closing [Text Block] rr_PerformanceTableClosingTextBlock
After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local income taxes. Actual after-tax returns depend on an investor's tax situation and may differ from those shown. The return after taxes on distributions and sale of Fund shares may exceed the return before taxes due to an assumed tax benefit from any losses on a sale of Fund shares at the end of the measurement period. If you are a tax-exempt entity or hold your Fund shares through a tax-deferred arrangement, such as an individual retirement account ("IRA") or a 401(k) plan, the after-tax returns do not apply to your situation. After-tax returns are shown only for Investor Class shares; after-tax returns for other share classes will vary.
Performance Table Uses Highest Federal Rate rr_PerformanceTableUsesHighestFederalRate After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local income taxes.
Performance Table Not Relevant to Tax Deferred rr_PerformanceTableNotRelevantToTaxDeferred If you 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 Explanation after Tax Higher rr_PerformanceTableExplanationAfterTaxHigher The return after taxes on distributions and sale of Fund shares may exceed the return before taxes due to an assumed tax benefit from any losses on a sale of Fund shares at the end of the measurement period.
Performance Past Does Not Indicate Future [Text] rr_PerformancePastDoesNotIndicateFuture Past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future.
Performance Information Illustrates Variability of Returns [Text] rr_PerformanceInformationIllustratesVariabilityOfReturns The bar chart and table below provide an indication of risk by showing changes in the Fund's performance over time. The bar chart shows the Fund's performance for the last calendar year. The table shows how the Fund's average annual total returns compare to a broad-based market index for the periods indicated.
Performance Table One Class of after Tax Shown [Text] rr_PerformanceTableOneClassOfAfterTaxShown After-tax returns are shown only for Investor Class shares; after-tax returns for other share classes will vary.
Performance Availability Website Address [Text] rr_PerformanceAvailabilityWebSiteAddress www.americanbeaconfunds.com
(American Beacon Alpha Quant Dividend Fund℠) | S&P 500 Value Index (Reflects no deduction for fees, expenses or taxes)  
Prospectus: rr_ProspectusTable  
1 Year rr_AverageAnnualReturnYear01 (8.95%)
Since Inception rr_AverageAnnualReturnSinceInception 1.32%
(American Beacon Alpha Quant Dividend Fund℠) | Class Y  
Prospectus: rr_ProspectusTable  
Maximum sales charge imposed on purchases (as a percentage of offering price) rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice none
Maximum deferred sales charge (as a percentage of the lower of original offering price or redemption proceeds) rr_MaximumDeferredSalesChargeOverOther none
Management Fee rr_ManagementFeesOverAssets 0.60%
Distribution and/or Services (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets none
Other Expenses rr_OtherExpensesOverAssets 3.68%
Total Annual Fund Operating Expenses rr_ExpensesOverAssets 4.28%
Fee Waiver and/or expense reimbursement rr_FeeWaiverOrReimbursementOverAssets (3.59%) [1]
Total Annual Fund Operating Expenses after fee waiver and/or expense reimbursement rr_NetExpensesOverAssets 0.69% [2]
Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 $ 70
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 970
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 1,882
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 $ 4,221
1 Year rr_AverageAnnualReturnYear01 (7.22%)
Since Inception rr_AverageAnnualReturnSinceInception 2.12%
Inception Date of Class rr_AverageAnnualReturnInceptionDate Mar. 22, 2017
(American Beacon Alpha Quant Dividend Fund℠) | Institutional Class  
Prospectus: rr_ProspectusTable  
Maximum sales charge imposed on purchases (as a percentage of offering price) rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice none
Maximum deferred sales charge (as a percentage of the lower of original offering price or redemption proceeds) rr_MaximumDeferredSalesChargeOverOther none
Management Fee rr_ManagementFeesOverAssets 0.60%
Distribution and/or Services (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets none
Other Expenses rr_OtherExpensesOverAssets 4.05%
Total Annual Fund Operating Expenses rr_ExpensesOverAssets 4.65%
Fee Waiver and/or expense reimbursement rr_FeeWaiverOrReimbursementOverAssets (4.06%) [1]
Total Annual Fund Operating Expenses after fee waiver and/or expense reimbursement rr_NetExpensesOverAssets 0.59% [2]
Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 $ 60
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 1,035
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 2,016
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 $ 4,499
1 Year rr_AverageAnnualReturnYear01 (7.12%)
Since Inception rr_AverageAnnualReturnSinceInception 2.23%
Inception Date of Class rr_AverageAnnualReturnInceptionDate Mar. 22, 2017
(American Beacon Alpha Quant Dividend Fund℠) | Investor Class  
Prospectus: rr_ProspectusTable  
Maximum sales charge imposed on purchases (as a percentage of offering price) rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice none
Maximum deferred sales charge (as a percentage of the lower of original offering price or redemption proceeds) rr_MaximumDeferredSalesChargeOverOther none
Management Fee rr_ManagementFeesOverAssets 0.60%
Distribution and/or Services (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets none
Other Expenses rr_OtherExpensesOverAssets 5.96%
Total Annual Fund Operating Expenses rr_ExpensesOverAssets 6.56%
Fee Waiver and/or expense reimbursement rr_FeeWaiverOrReimbursementOverAssets (5.59%) [1]
Total Annual Fund Operating Expenses after fee waiver and/or expense reimbursement rr_NetExpensesOverAssets 0.97% [2]
Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 $ 99
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 1,443
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 2,745
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 $ 5,826
Annual Return 2018 rr_AnnualReturn2018 (7.42%)
Year to Date Return, Label rr_YearToDateReturnLabel The calendar year-to-date total return as of September 30, 2019 was 22.73%
Bar Chart, Year to Date Return rr_BarChartYearToDateReturn 22.73%
Bar Chart, Year to Date Return, Date rr_BarChartYearToDateReturnDate Sep. 30, 2019
Highest Quarterly Return, Label rr_HighestQuarterlyReturnLabel Highest Quarterly Return: 7.62% 3rd Quarter 2018 01/01/2018 through 12/31/2018
Highest Quarterly Return rr_BarChartHighestQuarterlyReturn 7.62%
Highest Quarterly Return, Date rr_BarChartHighestQuarterlyReturnDate Sep. 30, 2018
Lowest Quarterly Return, Label rr_LowestQuarterlyReturnLabel Lowest Quarterly Return: -9.88% 4th Quarter 2018 01/01/2018 through 12/31/2018
Lowest Quarterly Return rr_BarChartLowestQuarterlyReturn (9.88%)
Lowest Quarterly Return, Date rr_BarChartLowestQuarterlyReturnDate Dec. 31, 2018
1 Year rr_AverageAnnualReturnYear01 (7.42%)
Since Inception rr_AverageAnnualReturnSinceInception 1.84%
Inception Date of Class rr_AverageAnnualReturnInceptionDate Mar. 22, 2017
(American Beacon Alpha Quant Dividend Fund℠) | Investor Class | Returns After Taxes on Distributions  
Prospectus: rr_ProspectusTable  
1 Year rr_AverageAnnualReturnYear01 (9.81%)
Since Inception rr_AverageAnnualReturnSinceInception 0.09%
Inception Date of Class rr_AverageAnnualReturnInceptionDate Mar. 22, 2017
(American Beacon Alpha Quant Dividend Fund℠) | Investor Class | Returns After Taxes on Distributions and Sales of Fund Shares  
Prospectus: rr_ProspectusTable  
1 Year rr_AverageAnnualReturnYear01 (3.88%)
Since Inception rr_AverageAnnualReturnSinceInception 0.99%
Inception Date of Class rr_AverageAnnualReturnInceptionDate Mar. 22, 2017
(American Beacon Alpha Quant Quality Fund℠)  
Prospectus: rr_ProspectusTable  
Objective [Heading] rr_ObjectiveHeading Investment Objective
Objective, Primary [Text Block] rr_ObjectivePrimaryTextBlock
The Fund's investment objective is long-term capital appreciation.
Expense [Heading] rr_ExpenseHeading Fees and Expenses of the Fund
Expense Narrative [Text Block] rr_ExpenseNarrativeTextBlock
This table describes the fees and expenses that you may pay if you buy and hold shares of the Fund. More information is available from your financial professional and in "Choosing Your Share Class" on page 37 of the Prospectus. Although the Fund does not impose any sales charge on Y Class shares, you may pay a commission to your broker on your purchases and sales of those shares, which is not reflected in the tables or Example below.
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 October 31, 2020
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 October 31, 2020. Although your actual costs may be higher or lower, based on these assumptions, your costs would be:
Portfolio Turnover [Heading] rr_PortfolioTurnoverHeading Portfolio Turnover
Portfolio Turnover [Text Block] rr_PortfolioTurnoverTextBlock
The Fund pays transaction costs, such as commissions, when it buys and sells securities (or ''turns over'' its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Fund shares are held in a taxable account. These costs, which are not reflected in annual Fund operating expenses or in the Example, affect the Fund's performance. During the most recent fiscal year, the Fund's portfolio turnover rate was 83% of the average value of its portfolio.
Portfolio Turnover, Rate rr_PortfolioTurnoverRate 83.00%
Strategy [Heading] rr_StrategyHeading Principal Investment Strategies
Strategy Narrative [Text Block] rr_StrategyNarrativeTextBlock
The Fund seeks to achieve its investment objective by implementing a quantitative approach to investing in U.S. large and mid-cap stocks. The Fund is managed pursuant to the proprietary fundamentally based, systematic process of Alpha Quant Advisors, LLC ("Alpha Quant"), the Fund's sub-advisor. On a quarterly basis, this process involves the evaluation of each portfolio holding for relative attractiveness based on Alpha Quant's criteria, including profitability, financial strength and productivity. If a portfolio holding no longer meets Alpha Quant's criteria, it may be sold and the proceeds reinvested in a new holding. This is done to maintain a portfolio of stocks most reflective of the fundamental characteristics targeted by Alpha Quant, which may vary based on market conditions.
The Fund typically holds a focused portfolio of approximately 30 stocks. Alpha Quant employs a proprietary methodology to select the stocks of U.S. large and mid-cap high-quality companies for the Fund. Alpha Quant defines high-quality companies as large and mid-sized companies that display above market average profitability, as measured by return on invested capital, profit margins, and labor productivity. Stocks are purchased and sold based on Alpha Quant's assessment regarding a company's profitability and financial strength. The Fund may have significant exposure to 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 invests in U.S. common stocks. The Fund may also invest cash balances in other investment companies, including money market funds, and may purchase and sell futures contracts on stock indices to gain market exposure on cash balances or reduce market exposure in anticipation of liquidity needs. The Fund may seek to earn additional income by lending its securities to certain qualified broker-dealers and institutions on a short-term or long-term basis.
Risk [Heading] rr_RiskHeading Principal Risks
Risk Narrative [Text Block] rr_RiskNarrativeTextBlock
There is no assurance that the Fund will achieve its investment objective and you could lose part or all of your investment in the Fund. The Fund is not designed for investors who need an assured level of income and is intended to be a long-term investment. The Fund is not a complete investment program and may not be appropriate for all investors. Investors should carefully consider their own investment goals and risk tolerance before investing in the Fund. The principal risks of investing in the Fund listed below are presented in alphabetical order, and not in order of importance or potential exposure, to facilitate your ability to find particular risks and compare them with the risks of other funds. Each risk summarized below is considered a "principal risk" of investing in the Fund, regardless of the order in which it appears.
Cybersecurity and Operational Risk
The Fund and its service providers, and shareholders' ability to transact with the Fund, may be negatively impacted due to operational risks arising from, among other problems: human errors, systems and technology disruptions or failures, or cybersecurity incidents. Cybersecurity incidents may allow an unauthorized party to gain access to Fund assets, customer data, or proprietary information, or cause the Fund or its service providers, as well as the securities trading venues and their service providers, to suffer data corruption or lose operational functionality. 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. 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.
Equity Investments Risk
Equity securities are subject to investment risk and market risk. The Fund may invest in the following equity securities, which may expose the Fund to the following additional risks:
  • Common Stock Risk. The value of a company's common stock may fall as a result of factors affecting the company, companies in the same industry or sector, or the financial markets overall. Common stock generally is subordinate to preferred stock upon the liquidation or bankruptcy of the issuing company.
Focused Holdings Risk
Because the Fund may have a focused portfolio, the increase or decrease of the value of a single investment may have a greater impact on the Fund's net asset value ("NAV") and total return when compared to other funds.
Futures Contracts Risk
Futures contracts are derivative instruments pursuant to a contract where the parties agree to a fixed price for an agreed amount of securities or other underlying assets at an agreed date. The use of such derivative instruments may expose the Fund to additional risks that it would not be subject to if it invested directly in the securities underlying those derivatives. There may at times be an imperfect correlation between the movement in the prices of futures contracts and the value of their underlying instruments or indexes. There can be no assurance that any strategy used will succeed. There also can be no assurance that, at all times, a liquid market will exist for offsetting a futures contract that the Fund has previously bought or sold and this may result in the inability to close a futures contract when desired. Futures contracts may experience potentially dramatic price changes, which will increase the volatility of the Fund and may involve a small investment of cash (the amount of initial and variation margin) relative to the magnitude of the risk assumed (the potential increase or decrease in the price of the futures contract).
Growth Companies Risk
Growth companies are expected to increase their earnings at a certain rate. When these expectations are not met, the prices of these stocks may go down, even if earnings showed an absolute increase. 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 a sub-advisor's 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 that a subadvisor has placed on it. Growth company stocks may also lack the dividend yield that can cushion stock price declines in market downturns.
Investment Risk
An investment in the Fund is not a deposit with a bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency. When you sell your shares of the Fund, they could be worth less than what you paid for them. Therefore, you may lose money by investing in the Fund.
Issuer Risk
The value of, and/or the return generated by, a security may decline for a number of reasons 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.
Large Capitalization Companies Risk
The securities of large market capitalization companies may underperform other segments of the market because such companies may be less responsive to competitive challenges and opportunities. Many larger capitalization companies also may be unable to attain the high growth rates of successful smaller companies, especially during periods of economic expansion.
Market Risk
The Fund is subject to the risk that the securities markets will move down, sometimes rapidly and unpredictably based on overall economic conditions and other factors. The value of a security may decline due to general market conditions which are not specifically related to a particular company, such as real or perceived adverse economic conditions, changes in the general outlook for corporate earnings, changes in interest or currency rates or adverse investment sentiment generally. Changes in the financial condition of a single issuer can impact a market as a whole. A rise in protectionist trade policies, risks associated with the United Kingdom's vote to leave the European Union, the risk of a trade dispute between the United States and China, and the possibility of changes to some international trade agreements, could affect the economies of many nations, including the United States, in ways that cannot necessarily be foreseen at the present time. The severity or duration of adverse economic conditions may also be affected by policy changes made by governments or quasi-governmental organizations. In addition, political and governmental events within the U.S. and abroad may affect investor and consumer confidence and may adversely impact financial markets and the broader economy, perhaps suddenly and to a significant degree.
Mid-Capitalization Companies Risk
Investing in the securities of mid-capitalization companies involves greater risk and the possibility of greater price volatility than investing in larger capitalization and more established companies. Since mid-capitalization companies may have narrower commercial markets and more limited operating history, product lines, and managerial and financial resources than larger, more established companies, the securities of these companies may lack sufficient market liquidity, and they can be particularly sensitive to expected changes in interest rates, borrowing costs and earnings.
Model and Data Risk
The success of the sub-advisor's investment strategy depends largely on the effectiveness of its quantitative research models and investment programs. 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 or 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).
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. The Fund will be subject to the risks associated with investments in those companies, including but not limited to the following:
  • Money Market Funds. Investments in money market funds are subject to interest rate risk, credit risk, and market risk.
Sector Risk
When the Fund focuses its investments in certain sectors of the economy, its performance may be driven largely by sector performance and could fluctuate more widely than if the Fund were invested more evenly across sectors. 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.
  • Information Technology Sector Risk. The market prices of information technology-related securities tend to exhibit a greater degree of market risk and sharp price fluctuations than other types of securities. These securities may fall in and out of favor with investors rapidly, which may cause sudden selling and dramatically lower market prices.
Securities Lending Risk
The borrower of a Fund's securities must provide collateral in the form of cash or cash equivalents, securities of the U.S. Government and its agencies and instrumentalities, approved bank letters of credit, or other forms of collateral that are permitted by the SEC for registered investment companies in an amount at least equal to the value of the loaned securities. For loans collateralized with cash, the Fund invests the cash in other securities. To the extent the Fund lends its securities, it may be subject to the following risks: i) borrowers of the Fund's securities may provide collateral in the form of cash that is reinvested in securities, ii) the securities in which the cash collateral is invested may not perform sufficiently to cover the return collateral payments owed to borrowers, iii) delays may occur in the recovery of securities from borrowers, which could interfere with the Fund's ability to vote proxies or to settle transactions, and iv) there is the risk of possible loss of rights in the collateral should the borrower fail financially.
Securities Selection Risk
Securities selected by the sub-advisor for the Fund may not perform to expectations. This could result in the Fund's underperformance compared to its benchmark index(es), or other funds with similar investment objectives or strategies.
Value Stocks Risk
Value stocks are subject to the risk that their intrinsic value may never be realized by the market or that their prices may decline. The Fund's investments in value stocks seek to limit potential downside price risk over time; however, value stock prices still may decline substantially. In addition, the Fund may produce more modest gains as a trade-off for this potentially lower risk. The Fund's investment in value stocks could cause the Fund to underperform funds that use a growth or non-value approach to investing or have a broader investment style.
Risk Lose Money [Text] rr_RiskLoseMoney There is no assurance that the Fund will achieve its investment objective and you could lose part or all of your investment in the Fund.
Risk Not Insured Depository Institution [Text] rr_RiskNotInsuredDepositoryInstitution An investment in the Fund is not a deposit with a bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.
Bar Chart and Performance Table [Heading] rr_BarChartAndPerformanceTableHeading Fund Performance
Performance Narrative [Text Block] rr_PerformanceNarrativeTextBlock
The bar chart and table below provide an indication of risk by showing changes in the Fund's performance over time. The bar chart shows the Fund's performance for the last calendar year. The table shows how the Fund's average annual total returns compare to a broad-based market index for the periods indicated.
You may obtain updated performance information on the Fund's website at www.americanbeaconfunds.com. Past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future.
Bar Chart [Heading] rr_BarChartHeading Calendar year total returns for Investor Class Shares. Year Ended 12/31
Bar Chart Closing [Text Block] rr_BarChartClosingTextBlock
Highest Quarterly Return:
9.64% 3rd Quarter 2018
01/01/2018 through 12/31/2018
Lowest Quarterly Return:
-15.19% 4th Quarter 2018
01/01/2018 through 12/31/2018
The calendar year-to-date total return as of September 30, 2019 was 13.54%
Performance Table Heading rr_PerformanceTableHeading Average annual total returns for periods ended December 31, 2018
Performance Table Closing [Text Block] rr_PerformanceTableClosingTextBlock
After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local income taxes. Actual after-tax returns depend on an investor's tax situation and may differ from those shown. The return after taxes on distributions and sale of Fund shares may exceed the return before taxes due to an assumed tax benefit from any losses on a sale of Fund shares at the end of the measurement period. If you are a tax-exempt entity or hold your Fund shares through a tax-deferred arrangement, such as an individual retirement account ("IRA") or a 401(k) plan, the after-tax returns do not apply to your situation. After-tax returns are shown only for Investor Class shares; after-tax returns for other share classes will vary.
Performance Table Uses Highest Federal Rate rr_PerformanceTableUsesHighestFederalRate After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local income taxes.
Performance Table Not Relevant to Tax Deferred rr_PerformanceTableNotRelevantToTaxDeferred If you 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 Explanation after Tax Higher rr_PerformanceTableExplanationAfterTaxHigher The return after taxes on distributions and sale of Fund shares may exceed the return before taxes due to an assumed tax benefit from any losses on a sale of Fund shares at the end of the measurement period.
Performance Past Does Not Indicate Future [Text] rr_PerformancePastDoesNotIndicateFuture Past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future.
Performance Information Illustrates Variability of Returns [Text] rr_PerformanceInformationIllustratesVariabilityOfReturns The bar chart and table below provide an indication of risk by showing changes in the Fund's performance over time. The bar chart shows the Fund's performance for the last calendar year. The table shows how the Fund's average annual total returns compare to a broad-based market index for the periods indicated.
Performance Table One Class of after Tax Shown [Text] rr_PerformanceTableOneClassOfAfterTaxShown After-tax returns are shown only for Investor Class shares; after-tax returns for other share classes will vary.
Performance Availability Website Address [Text] rr_PerformanceAvailabilityWebSiteAddress www.americanbeaconfunds.com
(American Beacon Alpha Quant Quality Fund℠) | S&P 500 Growth Index (Reflects no deduction for fees, expenses or taxes)  
Prospectus: rr_ProspectusTable  
1 Year rr_AverageAnnualReturnYear01 (0.01%)
Since Inception rr_AverageAnnualReturnSinceInception 9.82%
(American Beacon Alpha Quant Quality Fund℠) | Class Y  
Prospectus: rr_ProspectusTable  
Maximum sales charge imposed on purchases (as a percentage of offering price) rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice none
Maximum deferred sales charge (as a percentage of the lower of original offering price or redemption proceeds) rr_MaximumDeferredSalesChargeOverOther none
Management Fee rr_ManagementFeesOverAssets 0.60%
Distribution and/or Services (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets none
Other Expenses rr_OtherExpensesOverAssets 4.15%
Total Annual Fund Operating Expenses rr_ExpensesOverAssets 4.75%
Fee Waiver and/or expense reimbursement rr_FeeWaiverOrReimbursementOverAssets (4.06%) [1]
Total Annual Fund Operating Expenses after fee waiver and/or expense reimbursement rr_NetExpensesOverAssets 0.69% [2]
Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 $ 70
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 1,064
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 2,062
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 $ 4,580
1 Year rr_AverageAnnualReturnYear01 (1.66%)
Since Inception rr_AverageAnnualReturnSinceInception 7.75%
Inception Date of Class rr_AverageAnnualReturnInceptionDate Mar. 22, 2017
(American Beacon Alpha Quant Quality Fund℠) | Institutional Class  
Prospectus: rr_ProspectusTable  
Maximum sales charge imposed on purchases (as a percentage of offering price) rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice none
Maximum deferred sales charge (as a percentage of the lower of original offering price or redemption proceeds) rr_MaximumDeferredSalesChargeOverOther none
Management Fee rr_ManagementFeesOverAssets 0.60%
Distribution and/or Services (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets none
Other Expenses rr_OtherExpensesOverAssets 4.09%
Total Annual Fund Operating Expenses rr_ExpensesOverAssets 4.69%
Fee Waiver and/or expense reimbursement rr_FeeWaiverOrReimbursementOverAssets (4.10%) [1]
Total Annual Fund Operating Expenses after fee waiver and/or expense reimbursement rr_NetExpensesOverAssets 0.59% [2]
Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 $ 60
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 1,043
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 2,031
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 $ 4,529
1 Year rr_AverageAnnualReturnYear01 (1.58%)
Since Inception rr_AverageAnnualReturnSinceInception 7.86%
Inception Date of Class rr_AverageAnnualReturnInceptionDate Mar. 22, 2017
(American Beacon Alpha Quant Quality Fund℠) | Investor Class  
Prospectus: rr_ProspectusTable  
Maximum sales charge imposed on purchases (as a percentage of offering price) rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice none
Maximum deferred sales charge (as a percentage of the lower of original offering price or redemption proceeds) rr_MaximumDeferredSalesChargeOverOther none
Management Fee rr_ManagementFeesOverAssets 0.60%
Distribution and/or Services (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets none
Other Expenses rr_OtherExpensesOverAssets 8.85%
Total Annual Fund Operating Expenses rr_ExpensesOverAssets 9.45%
Fee Waiver and/or expense reimbursement rr_FeeWaiverOrReimbursementOverAssets (8.48%) [1]
Total Annual Fund Operating Expenses after fee waiver and/or expense reimbursement rr_NetExpensesOverAssets 0.97% [2]
Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 $ 99
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 1,979
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 3,695
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 $ 7,360
Annual Return 2018 rr_AnnualReturn2018 (1.93%)
Year to Date Return, Label rr_YearToDateReturnLabel The calendar year-to-date total return as of September 30, 2019 was 13.54%
Bar Chart, Year to Date Return rr_BarChartYearToDateReturn 13.54%
Bar Chart, Year to Date Return, Date rr_BarChartYearToDateReturnDate Sep. 30, 2019
Highest Quarterly Return, Label rr_HighestQuarterlyReturnLabel Highest Quarterly Return: 9.64% 3rd Quarter 2018 01/01/2018 through 12/31/2018
Highest Quarterly Return rr_BarChartHighestQuarterlyReturn 9.64%
Highest Quarterly Return, Date rr_BarChartHighestQuarterlyReturnDate Sep. 30, 2018
Lowest Quarterly Return, Label rr_LowestQuarterlyReturnLabel Lowest Quarterly Return: -15.19% 4th Quarter 2018 01/01/2018 through 12/31/2018
Lowest Quarterly Return rr_BarChartLowestQuarterlyReturn (15.19%)
Lowest Quarterly Return, Date rr_BarChartLowestQuarterlyReturnDate Dec. 31, 2018
1 Year rr_AverageAnnualReturnYear01 (1.93%)
Since Inception rr_AverageAnnualReturnSinceInception 7.49%
Inception Date of Class rr_AverageAnnualReturnInceptionDate Mar. 22, 2017
(American Beacon Alpha Quant Quality Fund℠) | Investor Class | Returns After Taxes on Distributions  
Prospectus: rr_ProspectusTable  
1 Year rr_AverageAnnualReturnYear01 (5.94%)
Since Inception rr_AverageAnnualReturnSinceInception 4.89%
Inception Date of Class rr_AverageAnnualReturnInceptionDate Mar. 22, 2017
(American Beacon Alpha Quant Quality Fund℠) | Investor Class | Returns After Taxes on Distributions and Sales of Fund Shares  
Prospectus: rr_ProspectusTable  
1 Year rr_AverageAnnualReturnYear01 0.99%
Since Inception rr_AverageAnnualReturnSinceInception 5.47%
Inception Date of Class rr_AverageAnnualReturnInceptionDate Mar. 22, 2017
(American Beacon Alpha Quant Value Fund℠)  
Prospectus: rr_ProspectusTable  
Objective [Heading] rr_ObjectiveHeading Investment Objective
Objective, Primary [Text Block] rr_ObjectivePrimaryTextBlock
The Fund's investment objective is long-term capital appreciation.
Expense [Heading] rr_ExpenseHeading Fees and Expenses of the Fund
Expense Narrative [Text Block] rr_ExpenseNarrativeTextBlock
This table describes the fees and expenses that you may pay if you buy and hold shares of the Fund. More information is available from your financial professional and in "Choosing Your Share Class" on page 37 of the Prospectus. Although the Fund does not impose any sales charge on Y Class shares, you may pay a commission to your broker on your purchases and sales of those shares, which is not reflected in the tables or Example below.
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 October 31, 2020
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 October 31, 2020. Although your actual costs may be higher or lower, based on these assumptions, your costs would be:
Portfolio Turnover [Heading] rr_PortfolioTurnoverHeading Portfolio Turnover
Portfolio Turnover [Text Block] rr_PortfolioTurnoverTextBlock
The Fund pays transaction costs, such as commissions, when it buys and sells securities (or ''turns over'' its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Fund shares are held in a taxable account. These costs, which are not reflected in annual Fund operating expenses or in the Example, affect the Fund's performance. During the most recent fiscal year, the Fund's portfolio turnover rate was 90% of the average value of its portfolio.
Portfolio Turnover, Rate rr_PortfolioTurnoverRate 90.00%
Strategy [Heading] rr_StrategyHeading Principal Investment Strategies
Strategy Narrative [Text Block] rr_StrategyNarrativeTextBlock
The Fund seeks to achieve its investment objective by implementing a quantitative approach to investing in U.S. large and mid-cap stocks. The Fund is managed pursuant to the proprietary fundamentally-based, systematic process of Alpha Quant Advisors, LLC ("Alpha Quant"), the Fund's sub-advisor. On a quarterly basis, this process involves the evaluation of each portfolio holding for relative attractiveness based on Alpha Quant's criteria, including free cash flow yield, debt leverage, and changes in earnings prospects. If a portfolio holding no longer meets Alpha Quant's criteria, it may be sold and the proceeds reinvested in a new holding. This is done to maintain a portfolio of stocks most reflective of the fundamental characteristics targeted by Alpha Quant, which may vary based on market conditions. The Fund typically holds a focused portfolio of approximately 30 stocks.
Alpha Quant employs a proprietary methodology to select the stocks of U.S. large and mid-cap value companies for the Fund. Alpha Quant defines value companies as large and mid-sized companies that display high levels of excess cash generated by their businesses, low debt, and are relatively undervalued as compared to the broader U.S. equity market. To mitigate the risk of investing in "value traps," which are stocks that appear to be undervalued, but are in distress or face other business challenges and continue to stay inexpensive or decline further, Alpha Quant applies stringent criteria to select investments, including the amount of a company's debt and its ability to generate cash in excess of operating expenses. Securities are purchased and sold based on Alpha Quant's expectations regarding a company's valuation and business momentum as measured by changes in revenue, profitability, and earnings growth.
Stocks with improving fundamentals may be retained in the Fund's portfolio even after valuations have improved significantly. The Fund may have significant exposure to 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 invests in U.S. common stocks. The Fund may also invest cash balances in other investment companies, including money market funds, and may purchase and sell futures contracts on stock indices to gain market exposure on cash balances or reduce market exposure in anticipation of liquidity needs. The Fund may seek to earn additional income by lending its securities to certain qualified broker-dealers and institutions on a short-term or long-term basis.
Risk [Heading] rr_RiskHeading Principal Risks
Risk Narrative [Text Block] rr_RiskNarrativeTextBlock
There is no assurance that the Fund will achieve its investment objective and you could lose part or all of your investment in the Fund. The Fund is not designed for investors who need an assured level of income and is intended to be a long-term investment. The Fund is not a complete investment program and may not be appropriate for all investors. Investors should carefully consider their own investment goals and risk tolerance before investing in the Fund. The principal risks of investing in the Fund listed below are presented in alphabetical order, and not in order of importance or potential exposure, to facilitate your ability to find particular risks and compare them with the risks of other funds. Each risk summarized below is considered a "principal risk" of investing in the Fund, regardless of the order in which it appears.
Cybersecurity and Operational Risk
The Fund and its service providers, and shareholders' ability to transact with the Fund, may be negatively impacted due to operational risks arising from, among other problems: human errors, systems and technology disruptions or failures, or cybersecurity incidents. Cybersecurity incidents may allow an unauthorized party to gain access to Fund assets, customer data, or proprietary information, or cause the Fund or its service providers, as well as the securities trading venues and their service providers, to suffer data corruption or lose operational functionality. 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. 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.
Equity Investments Risk
Equity securities are subject to investment risk and market risk. The Fund may invest in the following equity securities, which may expose the Fund to the following additional risks:
  • Common Stock Risk. The value of a company's common stock may fall as a result of factors affecting the company, companies in the same industry or sector, or the financial markets overall. Common stock generally is subordinate to preferred stock upon the liquidation or bankruptcy of the issuing company.
Focused Holdings Risk
Because the Fund may have a focused portfolio, the increase or decrease of the value of a single investment may have a greater impact on the Fund's net asset value ("NAV") and total return when compared to other funds.
Futures Contracts Risk
Futures contracts are derivative instruments pursuant to a contract where the parties agree to a fixed price for an agreed amount of securities or other underlying assets at an agreed date. The use of such derivative instruments may expose the Fund to additional risks that it would not be subject to if it invested directly in the securities underlying those derivatives. There may at times be an imperfect correlation between the movement in the prices of futures contracts and the value of their underlying instruments or indexes. There can be no assurance that any strategy used will succeed. There also can be no assurance that, at all times, a liquid market will exist for offsetting a futures contract that the Fund has previously bought or sold and this may result in the inability to close a futures contract when desired. Futures contracts may experience potentially dramatic price changes, which will increase the volatility of the Fund and may involve a small investment of cash (the amount of initial and variation margin) relative to the magnitude of the risk assumed (the potential increase or decrease in the price of the futures contract).
Investment Risk
An investment in the Fund is not a deposit with a bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency. When you sell your shares of the Fund, they could be worth less than what you paid for them. Therefore, you may lose money by investing in the Fund.
Issuer Risk
The value of, and/or the return generated by, a security may decline for a number of reasons 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.
Large Capitalization Companies Risk
The securities of large market capitalization companies may underperform other segments of the market because such companies may be less responsive to competitive challenges and opportunities. Many larger capitalization companies also may be unable to attain the high growth rates of successful smaller companies, especially during periods of economic expansion.
Market Risk
The Fund is subject to the risk that the securities markets will move down, sometimes rapidly and unpredictably based on overall economic conditions and other factors. The value of a security may decline due to general market conditions which are not specifically related to a particular company, such as real or perceived adverse economic conditions, changes in the general outlook for corporate earnings, changes in interest or currency rates or adverse investment sentiment generally. Changes in the financial condition of a single issuer can impact a market as a whole. A rise in protectionist trade policies, risks associated with the United Kingdom's vote to leave the European Union, the risk of a trade dispute between the United States and China, and the possibility of changes to some international trade agreements, could affect the economies of many nations, including the United States, in ways that cannot necessarily be foreseen at the present time. The severity or duration of adverse economic conditions may also be affected by policy changes made by governments or quasi-governmental organizations. In addition, political and governmental events within the U.S. and abroad may affect investor and consumer confidence and may adversely impact financial markets and the broader economy, perhaps suddenly and to a significant degree.
Mid-Capitalization Companies Risk
Investing in the securities of mid-capitalization companies involves greater risk and the possibility of greater price volatility than investing in larger capitalization and more established companies. Since mid-capitalization companies may have narrower commercial markets and more limited operating history, product lines, and managerial and financial resources than larger, more established companies, the securities of these companies may lack sufficient market liquidity, and they can be particularly sensitive to expected changes in interest rates, borrowing costs and earnings.
Model and Data Risk
The success of the sub-advisor's investment strategy depends largely on the effectiveness of its quantitative research models and investment programs. 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 or 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).
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. The Fund will be subject to the risks associated with investments in those companies, including but not limited to the following:
  • Money Market Funds. Investments in money market funds are subject to interest rate risk, credit risk, and market risk.
Sector Risk
When the Fund focuses its investments in certain sectors of the economy, its performance may be driven largely by sector performance and could fluctuate more widely than if the Fund were invested more evenly across sectors. 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.
  • Information Technology Sector Risk. The market prices of information technology-related securities tend to exhibit a greater degree of market risk and sharp price fluctuations than other types of securities. These securities may fall in and out of favor with investors rapidly, which may cause sudden selling and dramatically lower market prices.
Securities Lending Risk
The borrower of a Fund's securities must provide collateral in the form of cash or cash equivalents, securities of the U.S. Government and its agencies and instrumentalities, approved bank letters of credit, or other forms of collateral that are permitted by the SEC for registered investment companies in an amount at least equal to the value of the loaned securities. For loans collateralized with cash, the Fund invests the cash in other securities. To the extent the Fund lends its securities, it may be subject to the following risks: i) borrowers of the Fund's securities may provide collateral in the form of cash that is reinvested in securities, ii) the securities in which the cash collateral is invested may not perform sufficiently to cover the return collateral payments owed to borrowers, iii) delays may occur in the recovery of securities from borrowers, which could interfere with the Fund's ability to vote proxies or to settle transactions, and iv) there is the risk of possible loss of rights in the collateral should the borrower fail financially.
Securities Selection Risk
Securities selected by the sub-advisor for the Fund may not perform to expectations. This could result in the Fund's underperformance compared to its benchmark index(es), or other funds with similar investment objectives or strategies.
Value Stocks Risk
Value stocks are subject to the risk that their intrinsic value may never be realized by the market or that their prices may decline. The Fund's investments in value stocks seek to limit potential downside price risk over time; however, value stock prices still may decline substantially. In addition, the Fund may produce more modest gains as a trade-off for this potentially lower risk. The Fund's investment in value stocks could cause the Fund to underperform funds that use a growth or non-value approach to investing or have a broader investment style.
Risk Lose Money [Text] rr_RiskLoseMoney There is no assurance that the Fund will achieve its investment objective and you could lose part or all of your investment in the Fund.
Risk Not Insured Depository Institution [Text] rr_RiskNotInsuredDepositoryInstitution An investment in the Fund is not a deposit with a bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.
Bar Chart and Performance Table [Heading] rr_BarChartAndPerformanceTableHeading Fund Performance
Performance Narrative [Text Block] rr_PerformanceNarrativeTextBlock
The bar chart and table below provide an indication of risk by showing changes in the Fund's performance over time. The bar chart shows the Fund's performance for the last calendar year. The table shows how the Fund's average annual total returns compare to a broad-based market index for the periods indicated.
You may obtain updated performance information on the Fund's website at www.americanbeaconfunds.com. Past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future.
Bar Chart [Heading] rr_BarChartHeading Calendar year total returns for Investor Class Shares. Year Ended 12/31
Bar Chart Closing [Text Block] rr_BarChartClosingTextBlock
Highest Quarterly Return:
6.18% 3rd Quarter 2018
01/01/2018 through 12/31/2018
Lowest Quarterly Return:
-17.68% 4th Quarter 2018
01/01/2018 through 12/31/2018
The calendar year-to-date total return as of September 30, 2019 was 10.26%
Performance Table Heading rr_PerformanceTableHeading Average annual total returns for periods ended December 31, 2018
Performance Table Closing [Text Block] rr_PerformanceTableClosingTextBlock
After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local income taxes. Actual after-tax returns depend on an investor's tax situation and may differ from those shown. The return after taxes on distributions and sale of Fund shares may exceed the return before taxes due to an assumed tax benefit from any losses on a sale of Fund shares at the end of the measurement period. If you are a tax-exempt entity or hold your Fund shares through a tax-deferred arrangement, such as an individual retirement account ("IRA") or a 401(k) plan, the after-tax returns do not apply to your situation. After-tax returns are shown only for Investor Class shares; after-tax returns for other share classes will vary.
Performance Table Uses Highest Federal Rate rr_PerformanceTableUsesHighestFederalRate After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local income taxes.
Performance Table Not Relevant to Tax Deferred rr_PerformanceTableNotRelevantToTaxDeferred If you 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 Explanation after Tax Higher rr_PerformanceTableExplanationAfterTaxHigher The return after taxes on distributions and sale of Fund shares may exceed the return before taxes due to an assumed tax benefit from any losses on a sale of Fund shares at the end of the measurement period.
Performance Past Does Not Indicate Future [Text] rr_PerformancePastDoesNotIndicateFuture Past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future.
Performance Information Illustrates Variability of Returns [Text] rr_PerformanceInformationIllustratesVariabilityOfReturns The bar chart and table below provide an indication of risk by showing changes in the Fund's performance over time. The bar chart shows the Fund's performance for the last calendar year. The table shows how the Fund's average annual total returns compare to a broad-based market index for the periods indicated.
Performance Table One Class of after Tax Shown [Text] rr_PerformanceTableOneClassOfAfterTaxShown After-tax returns are shown only for Investor Class shares; after-tax returns for other share classes will vary.
Performance Availability Website Address [Text] rr_PerformanceAvailabilityWebSiteAddress www.americanbeaconfunds.com
(American Beacon Alpha Quant Value Fund℠) | S&P 500 Value Index (Reflects no deduction for fees, expenses or taxes)  
Prospectus: rr_ProspectusTable  
1 Year rr_AverageAnnualReturnYear01 (8.95%)
Since Inception rr_AverageAnnualReturnSinceInception 1.32%
(American Beacon Alpha Quant Value Fund℠) | Class Y  
Prospectus: rr_ProspectusTable  
Maximum sales charge imposed on purchases (as a percentage of offering price) rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice none
Maximum deferred sales charge (as a percentage of the lower of original offering price or redemption proceeds) rr_MaximumDeferredSalesChargeOverOther none
Management Fee rr_ManagementFeesOverAssets 0.60%
Distribution and/or Services (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets none
Other Expenses rr_OtherExpensesOverAssets 2.44%
Total Annual Fund Operating Expenses rr_ExpensesOverAssets 3.04%
Fee Waiver and/or expense reimbursement rr_FeeWaiverOrReimbursementOverAssets (2.35%) [1]
Total Annual Fund Operating Expenses after fee waiver and/or expense reimbursement rr_NetExpensesOverAssets 0.69% [2]
Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 $ 70
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 717
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 1,389
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 $ 3,189
1 Year rr_AverageAnnualReturnYear01 (9.65%)
Since Inception rr_AverageAnnualReturnSinceInception 2.99%
Inception Date of Class rr_AverageAnnualReturnInceptionDate Mar. 22, 2017
(American Beacon Alpha Quant Value Fund℠) | Institutional Class  
Prospectus: rr_ProspectusTable  
Maximum sales charge imposed on purchases (as a percentage of offering price) rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice none
Maximum deferred sales charge (as a percentage of the lower of original offering price or redemption proceeds) rr_MaximumDeferredSalesChargeOverOther none
Management Fee rr_ManagementFeesOverAssets 0.60%
Distribution and/or Services (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets none
Other Expenses rr_OtherExpensesOverAssets 2.30%
Total Annual Fund Operating Expenses rr_ExpensesOverAssets 2.90%
Fee Waiver and/or expense reimbursement rr_FeeWaiverOrReimbursementOverAssets (2.31%) [1]
Total Annual Fund Operating Expenses after fee waiver and/or expense reimbursement rr_NetExpensesOverAssets 0.59% [2]
Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 $ 60
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 679
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 1,323
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 $ 3,057
1 Year rr_AverageAnnualReturnYear01 (9.56%)
Since Inception rr_AverageAnnualReturnSinceInception 3.10%
Inception Date of Class rr_AverageAnnualReturnInceptionDate Mar. 22, 2017
(American Beacon Alpha Quant Value Fund℠) | Investor Class  
Prospectus: rr_ProspectusTable  
Maximum sales charge imposed on purchases (as a percentage of offering price) rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice none
Maximum deferred sales charge (as a percentage of the lower of original offering price or redemption proceeds) rr_MaximumDeferredSalesChargeOverOther none
Management Fee rr_ManagementFeesOverAssets 0.60%
Distribution and/or Services (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets none
Other Expenses rr_OtherExpensesOverAssets 3.09%
Total Annual Fund Operating Expenses rr_ExpensesOverAssets 3.69%
Fee Waiver and/or expense reimbursement rr_FeeWaiverOrReimbursementOverAssets (2.72%) [1]
Total Annual Fund Operating Expenses after fee waiver and/or expense reimbursement rr_NetExpensesOverAssets 0.97% [2]
Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 $ 99
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 877
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 1,675
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 $ 3,764
Annual Return 2018 rr_AnnualReturn2018 (9.85%)
Year to Date Return, Label rr_YearToDateReturnLabel The calendar year-to-date total return as of September 30, 2019 was 10.26%
Bar Chart, Year to Date Return rr_BarChartYearToDateReturn 10.26%
Bar Chart, Year to Date Return, Date rr_BarChartYearToDateReturnDate Sep. 30, 2019
Highest Quarterly Return, Label rr_HighestQuarterlyReturnLabel Highest Quarterly Return: 6.18% 3rd Quarter 2018 01/01/2018 through 12/31/2018
Highest Quarterly Return rr_BarChartHighestQuarterlyReturn 6.18%
Highest Quarterly Return, Date rr_BarChartHighestQuarterlyReturnDate Sep. 30, 2018
Lowest Quarterly Return, Label rr_LowestQuarterlyReturnLabel Lowest Quarterly Return: -17.68% 4th Quarter 2018 01/01/2018 through 12/31/2018
Lowest Quarterly Return rr_BarChartLowestQuarterlyReturn (17.68%)
Lowest Quarterly Return, Date rr_BarChartLowestQuarterlyReturnDate Dec. 31, 2018
1 Year rr_AverageAnnualReturnYear01 (9.85%)
Since Inception rr_AverageAnnualReturnSinceInception 2.71%
Inception Date of Class rr_AverageAnnualReturnInceptionDate Mar. 22, 2017
(American Beacon Alpha Quant Value Fund℠) | Investor Class | Returns After Taxes on Distributions  
Prospectus: rr_ProspectusTable  
1 Year rr_AverageAnnualReturnYear01 (11.05%)
Since Inception rr_AverageAnnualReturnSinceInception 1.74%
Inception Date of Class rr_AverageAnnualReturnInceptionDate Mar. 22, 2017
(American Beacon Alpha Quant Value Fund℠) | Investor Class | Returns After Taxes on Distributions and Sales of Fund Shares  
Prospectus: rr_ProspectusTable  
1 Year rr_AverageAnnualReturnYear01 (5.32%)
Since Inception rr_AverageAnnualReturnSinceInception 1.96%
Inception Date of Class rr_AverageAnnualReturnInceptionDate Mar. 22, 2017
(American Beacon Shapiro Equity Opportunities Fund℠)  
Prospectus: rr_ProspectusTable  
Objective [Heading] rr_ObjectiveHeading Investment Objective
Objective, Primary [Text Block] rr_ObjectivePrimaryTextBlock
The Fund's investment objective is long-term capital appreciation.
Expense [Heading] rr_ExpenseHeading Fees and Expenses of the Fund
Expense Narrative [Text Block] rr_ExpenseNarrativeTextBlock
This table describes the fees and expenses that you may pay if you buy and hold shares of the Fund. More information is available from your financial professional and in "Choosing Your Share Class" on page 37 of the Prospectus. Although the Fund does not impose any sales charge on Y Class shares, you may pay a commission to your broker on your purchases and sales of those shares, which is not reflected in the tables or Example below.
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 October 31, 2020
Expenses Not Correlated to Ratio Due to Acquired Fund Fees [Text] rr_ExpensesNotCorrelatedToRatioDueToAcquiredFundFees The Total Annual Fund Operating Expenses do not correlate to the ratio of expenses to average net assets provided in the Fund's Financial Highlights table, which reflects the operating expenses of the Fund and does not include Acquired Fund Fees and Expenses.
Expense Example [Heading] rr_ExpenseExampleHeading Example
Expense Example Narrative [Text Block] rr_ExpenseExampleNarrativeTextBlock
This Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return each year and that the Fund's operating expenses remain the same, except that this Example reflects the fee waiver/expense reimbursement arrangement for each share class through October 31, 2020. Although your actual costs may be higher or lower, based on these assumptions, your costs would be:
Portfolio Turnover [Heading] rr_PortfolioTurnoverHeading Portfolio Turnover
Portfolio Turnover [Text Block] rr_PortfolioTurnoverTextBlock
The Fund pays transaction costs, such as commissions, when it buys and sells securities (or ''turns over'' its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Fund shares are held in a taxable account. These costs, which are not reflected in annual Fund operating expenses or in the Example, affect the Fund's performance. During the most recent fiscal year, the Fund's portfolio turnover rate was 54% of the average value of its portfolio.
Portfolio Turnover, Rate rr_PortfolioTurnoverRate 54.00%
Strategy [Heading] rr_StrategyHeading Principal Investment Strategies
Strategy Narrative [Text Block] rr_StrategyNarrativeTextBlock
Under normal circumstances, at least 80% of the Fund's net assets (plus the amount of any borrowings for investment purposes) are invested in equity securities. The Fund will invest primarily in U.S. common stocks. The Fund seeks to achieve its investment objective by investing primarily in the common stock of companies that the Fund's investment sub-advisor, Shapiro Capital Management LLC ("Shapiro"), believes are priced below intrinsic value. Shapiro defines intrinsic value as the price at which a strategic or financial buyer would be willing to buy the entire company. Shapiro uses several different metrics to arrive at intrinsic value including, but not limited to, price to cash flow, price to sales and free cash flow yield. The Fund may invest in companies of all market capitalizations.
Shapiro seeks to achieve the Fund's investment objective by implementing a research intensive fundamental process to select a focused portfolio of approximately 20 – 35 common stocks. Shapiro uses this investment approach to identify companies with substantial operations, a high return on invested assets, products or services with a minimized chance of obsolescence and franchise-like characteristics with significant barriers to entry, and sound management with equity interest in the company.
The Fund may also invest cash balances in other investment companies, including money market funds managed by the Manager, and may purchase and sell futures contracts on stock indices to gain market exposure on cash balances or reduce market exposure in anticipation of liquidity needs.
The Fund may seek to earn additional income by lending its securities to certain qualified broker-dealers and institutions on a short-term or long-term basis.
The Fund is non-diversified, which means that it is not limited to a percentage of assets that it may invest in any one issuer and may focus its investments in fewer issuers than a fund with a diversified portfolio.
Risk [Heading] rr_RiskHeading Principal Risks
Risk Narrative [Text Block] rr_RiskNarrativeTextBlock
There is no assurance that the Fund will achieve its investment objective and you could lose part or all of your investment in the Fund. The Fund is not designed for investors who need an assured level of income and is intended to be a long-term investment. The Fund is not a complete investment program and may not be appropriate for all investors. Investors should carefully consider their own investment goals and risk tolerance before investing in the Fund. The principal risks of investing in the Fund listed below are presented in alphabetical order, and not in order of importance or potential exposure, to facilitate your ability to find particular risks and compare them with the risks of other funds. Each risk summarized below is considered a "principal risk" of investing in the Fund, regardless of the order in which it appears.
Cybersecurity and Operational Risk
The Fund and its service providers, and shareholders' ability to transact with the Fund, may be negatively impacted due to operational risks arising from, among other problems: human errors, systems and technology disruptions or failures, or cybersecurity incidents. Cybersecurity incidents may allow an unauthorized party to gain access to Fund assets, customer data, or proprietary information, or cause the Fund or its service providers, as well as the securities trading venues and their service providers, to suffer data corruption or lose operational functionality. 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. 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.
Equity Investments Risk
Equity securities are subject to investment risk and market risk. The Fund may invest in the following equity securities, which may expose the Fund to the following additional risks:
  • Common Stock Risk. The value of a company's common stock may fall as a result of factors affecting the company, companies in the same industry or sector, or the financial markets overall. Common stock generally is subordinate to preferred stock upon the liquidation or bankruptcy of the issuing company.
Focused Holdings Risk
Because the Fund may have a focused portfolio, the increase or decrease of the value of a single investment may have a greater impact on the Fund's net asset value ("NAV") and total return when compared to other funds.
Futures Contracts Risk
Futures contracts are derivative instruments pursuant to a contract where the parties agree to a fixed price for an agreed amount of securities or other underlying assets at an agreed date. The use of such derivative instruments may expose the Fund to additional risks that it would not be subject to if it invested directly in the securities underlying those derivatives. There may at times be an imperfect correlation between the movement in the prices of futures contracts and the value of their underlying instruments or indexes. There can be no assurance that any strategy used will succeed. There also can be no assurance that, at all times, a liquid market will exist for offsetting a futures contract that the Fund has previously bought or sold and this may result in the inability to close a futures contract when desired. Futures contracts may experience potentially dramatic price changes, which will increase the volatility of the Fund and may involve a small investment of cash (the amount of initial and variation margin) relative to the magnitude of the risk assumed (the potential increase or decrease in the price of the futures contract).
Investment Risk
An investment in the Fund is not a deposit with a bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency. When you sell your shares of the Fund, they could be worth less than what you paid for them. Therefore, you may lose money by investing in the Fund.
Issuer Risk
The value of, and/or the return generated by, a security may decline for a number of reasons 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.
Large Capitalization Companies Risk
The securities of large market capitalization companies may underperform other segments of the market because such companies may be less responsive to competitive challenges and opportunities. Many larger capitalization companies also may be unable to attain the high growth rates of successful smaller companies, especially during periods of economic expansion.
Market Risk
The Fund is subject to the risk that the securities markets will move down, sometimes rapidly and unpredictably based on overall economic conditions and other factors. The value of a security may decline due to general market conditions which are not specifically related to a particular company, such as real or perceived adverse economic conditions, changes in the general outlook for corporate earnings, changes in interest or currency rates or adverse investment sentiment generally. Changes in the financial condition of a single issuer can impact a market as a whole. A rise in protectionist trade policies, risks associated with the United Kingdom's vote to leave the European Union, the risk of a trade dispute between the United States and China, and the possibility of changes to some international trade agreements, could affect the economies of many nations, including the United States, in ways that cannot necessarily be foreseen at the present time. The severity or duration of adverse economic conditions may also be affected by policy changes made by governments or quasi-governmental organizations. In addition, political and governmental events within the U.S. and abroad may affect investor and consumer confidence and may adversely impact financial markets and the broader economy, perhaps suddenly and to a significant degree.
Mid-Capitalization Companies Risk
Investing in the securities of mid-capitalization companies involves greater risk and the possibility of greater price volatility than investing in larger capitalization and more established companies. Since mid-capitalization companies may have narrower commercial markets and more limited operating history, product lines, and managerial and financial resources than larger, more established companies, the securities of these companies may lack sufficient market liquidity, and they can be particularly sensitive to expected changes in interest rates, borrowing costs and earnings.
Non-Diversification Risk
The Fund is non-diversified, which means it may focus its investments in the securities of a comparatively small number of issuers. Investments in securities of a limited number of issuers exposes the Fund to greater market risk, price volatility and potential losses than if assets were diversified among the securities of a greater number of issuers.
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. The Fund will be subject to the risks associated with investments in those companies, including but not limited to the following:
  • Money Market Funds. Investments in money market funds are subject to interest rate risk, credit risk, and market risk.
Securities Lending Risk
The borrower of a Fund's securities must provide collateral in the form of cash or cash equivalents, securities of the U.S. Government and its agencies and instrumentalities, approved bank letters of credit, or other forms of collateral that are permitted by the SEC for registered investment companies in an amount at least equal to the value of the loaned securities. For loans collateralized with cash, the Fund invests the cash in other securities. To the extent the Fund lends its securities, it may be subject to the following risks: i) borrowers of the Fund's securities may provide collateral in the form of cash that is reinvested in securities, ii) the securities in which the cash collateral is invested may not perform sufficiently to cover the return collateral payments owed to borrowers, iii) delays may occur in the recovery of securities from borrowers, which could interfere with the Fund's ability to vote proxies or to settle transactions, and iv) there is the risk of possible loss of rights in the collateral should the borrower fail financially.
Securities Selection Risk
Securities selected by the sub-advisor for the Fund may not perform to expectations. This could result in the Fund's underperformance compared to its benchmark index(es), or other funds with similar investment objectives or strategies.
Small Capitalization Companies Risk
Investing in the securities of small-capitalization companies involves greater risk and the possibility of greater price volatility than investing in larger capitalization and more established companies. Since small-capitalization companies may have narrower commercial markets, and more limited operating history, product lines, and managerial and financial resources than larger, more established companies, the securities of these companies may lack sufficient market liquidity and they can be particularly sensitive to expected changes in interest rates, borrowing costs and earnings.
Value Stocks Risk
Value stocks are subject to the risk that their intrinsic value may never be realized by the market or that their prices may decline. The Fund's investments in value stocks seek to limit potential downside price risk over time; however, value stock prices still may decline substantially. In addition, the Fund may produce more modest gains as a trade-off for this potentially lower risk. The Fund's investment in value stocks could cause the Fund to underperform funds that use a growth or non-value approach to investing or have a broader investment style.
Risk Nondiversified Status [Text] rr_RiskNondiversifiedStatus Non-Diversification Risk The Fund is non-diversified, which means it may focus its investments in the securities of a comparatively small number of issuers. Investments in securities of a limited number of issuers exposes the Fund to greater market risk, price volatility and potential losses than if assets were diversified among the securities of a greater number of issuers.
Risk Lose Money [Text] rr_RiskLoseMoney There is no assurance that the Fund will achieve its investment objective and you could lose part or all of your investment in the Fund.
Risk Not Insured Depository Institution [Text] rr_RiskNotInsuredDepositoryInstitution An investment in the Fund is not a deposit with a bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.
Bar Chart and Performance Table [Heading] rr_BarChartAndPerformanceTableHeading Fund Performance
Performance Narrative [Text Block] rr_PerformanceNarrativeTextBlock
The bar chart and table below provide an indication of risk by showing changes in the Fund's performance over time. The bar chart shows the Fund's performance for the last calendar year. The table shows how the Fund's average annual total returns compare to a broad-based market index for the periods indicated.
You may obtain updated performance information on the Fund's website at www.americanbeaconfunds.com. Past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future.
Bar Chart [Heading] rr_BarChartHeading Calendar year total returns for Investor Class Shares. Year Ended 12/31
Bar Chart Closing [Text Block] rr_BarChartClosingTextBlock
Highest Quarterly Return:
9.32% 2nd Quarter 2018
01/01/2018 through 12/31/2018
Lowest Quarterly Return:
-18.92% 4th Quarter 2018
01/01/2018 through 12/31/2018
The calendar year-to-date total return as of September 30, 2019 was 16.49%
Performance Table Heading rr_PerformanceTableHeading Average annual total returns for periods ended December 31, 2018
Performance Table Closing [Text Block] rr_PerformanceTableClosingTextBlock
After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local income taxes. Actual after-tax returns depend on an investor's tax situation and may differ from those shown. The return after taxes on distributions and sale of Fund shares may exceed the return before taxes due to an assumed tax benefit from any losses on a sale of Fund shares at the end of the measurement period. If you are a tax-exempt entity or hold your Fund shares through a tax-deferred arrangement, such as an individual retirement account ("IRA") or a 401(k) plan, the after-tax returns do not apply to your situation. After-tax returns are shown only for Investor Class shares; after-tax returns for other share classes will vary.
Performance Table Uses Highest Federal Rate rr_PerformanceTableUsesHighestFederalRate After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local income taxes.
Performance Table Not Relevant to Tax Deferred rr_PerformanceTableNotRelevantToTaxDeferred If you 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 Explanation after Tax Higher rr_PerformanceTableExplanationAfterTaxHigher The return after taxes on distributions and sale of Fund shares may exceed the return before taxes due to an assumed tax benefit from any losses on a sale of Fund shares at the end of the measurement period.
Performance Past Does Not Indicate Future [Text] rr_PerformancePastDoesNotIndicateFuture Past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future.
Performance Information Illustrates Variability of Returns [Text] rr_PerformanceInformationIllustratesVariabilityOfReturns The bar chart and table below provide an indication of risk by showing changes in the Fund's performance over time. The bar chart shows the Fund's performance for the last calendar year. The table shows how the Fund's average annual total returns compare to a broad-based market index for the periods indicated.
Performance Table One Class of after Tax Shown [Text] rr_PerformanceTableOneClassOfAfterTaxShown After-tax returns are shown only for Investor Class shares; after-tax returns for other share classes will vary.
Performance Availability Website Address [Text] rr_PerformanceAvailabilityWebSiteAddress www.americanbeaconfunds.com
(American Beacon Shapiro Equity Opportunities Fund℠) | Russell 3000 Index (Reflects no deduction for fees, expenses or taxes)  
Prospectus: rr_ProspectusTable  
1 Year rr_AverageAnnualReturnYear01 (5.24%)
Since Inception rr_AverageAnnualReturnSinceInception 1.64%
(American Beacon Shapiro Equity Opportunities Fund℠) | Class Y  
Prospectus: rr_ProspectusTable  
Maximum sales charge imposed on purchases (as a percentage of offering price) rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice none
Maximum deferred sales charge (as a percentage of the lower of original offering price or redemption proceeds) rr_MaximumDeferredSalesChargeOverOther none
Management Fee rr_ManagementFeesOverAssets 0.70%
Distribution and/or Services (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets none
Other Expenses rr_OtherExpensesOverAssets 0.36%
Acquired Fund Fees and Expenses rr_AcquiredFundFeesAndExpensesOverAssets 0.01%
Total Annual Fund Operating Expenses rr_ExpensesOverAssets 1.07% [3]
Fee Waiver and/or expense reimbursement rr_FeeWaiverOrReimbursementOverAssets (0.17%) [4]
Total Annual Fund Operating Expenses after fee waiver and/or expense reimbursement rr_NetExpensesOverAssets 0.90%
Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 $ 92
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 323
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 574
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 $ 1,290
1 Year rr_AverageAnnualReturnYear01 (9.32%)
Since Inception rr_AverageAnnualReturnSinceInception (1.89%)
Inception Date of Class rr_AverageAnnualReturnInceptionDate Sep. 12, 2017
(American Beacon Shapiro Equity Opportunities Fund℠) | Institutional Class  
Prospectus: rr_ProspectusTable  
Maximum sales charge imposed on purchases (as a percentage of offering price) rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice none
Maximum deferred sales charge (as a percentage of the lower of original offering price or redemption proceeds) rr_MaximumDeferredSalesChargeOverOther none
Management Fee rr_ManagementFeesOverAssets 0.70%
Distribution and/or Services (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets none
Other Expenses rr_OtherExpensesOverAssets 0.28%
Acquired Fund Fees and Expenses rr_AcquiredFundFeesAndExpensesOverAssets 0.01%
Total Annual Fund Operating Expenses rr_ExpensesOverAssets 0.99% [3]
Fee Waiver and/or expense reimbursement rr_FeeWaiverOrReimbursementOverAssets (0.19%) [4]
Total Annual Fund Operating Expenses after fee waiver and/or expense reimbursement rr_NetExpensesOverAssets 0.80%
Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 $ 82
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 296
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 529
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 $ 1,196
1 Year rr_AverageAnnualReturnYear01 (9.32%)
Since Inception rr_AverageAnnualReturnSinceInception (1.89%)
Inception Date of Class rr_AverageAnnualReturnInceptionDate Sep. 12, 2017
(American Beacon Shapiro Equity Opportunities Fund℠) | Investor Class  
Prospectus: rr_ProspectusTable  
Maximum sales charge imposed on purchases (as a percentage of offering price) rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice none
Maximum deferred sales charge (as a percentage of the lower of original offering price or redemption proceeds) rr_MaximumDeferredSalesChargeOverOther none
Management Fee rr_ManagementFeesOverAssets 0.70%
Distribution and/or Services (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets none
Other Expenses rr_OtherExpensesOverAssets 1.87%
Acquired Fund Fees and Expenses rr_AcquiredFundFeesAndExpensesOverAssets 0.01%
Total Annual Fund Operating Expenses rr_ExpensesOverAssets 2.58% [3]
Fee Waiver and/or expense reimbursement rr_FeeWaiverOrReimbursementOverAssets (1.40%) [4]
Total Annual Fund Operating Expenses after fee waiver and/or expense reimbursement rr_NetExpensesOverAssets 1.18%
Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 $ 120
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 669
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 1,245
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 $ 2,810
Annual Return 2018 rr_AnnualReturn2018 (9.70%)
Year to Date Return, Label rr_YearToDateReturnLabel The calendar year-to-date total return as of September 30, 2019 was 16.49%
Bar Chart, Year to Date Return rr_BarChartYearToDateReturn 16.49%
Bar Chart, Year to Date Return, Date rr_BarChartYearToDateReturnDate Sep. 30, 2019
Highest Quarterly Return, Label rr_HighestQuarterlyReturnLabel Highest Quarterly Return: 9.32% 2nd Quarter 2018 01/01/2018 through 12/31/2018
Highest Quarterly Return rr_BarChartHighestQuarterlyReturn 9.32%
Highest Quarterly Return, Date rr_BarChartHighestQuarterlyReturnDate Jun. 30, 2018
Lowest Quarterly Return, Label rr_LowestQuarterlyReturnLabel Lowest Quarterly Return: -18.92% 4th Quarter 2018 01/01/2018 through 12/31/2018
Lowest Quarterly Return rr_BarChartLowestQuarterlyReturn (18.92%)
Lowest Quarterly Return, Date rr_BarChartLowestQuarterlyReturnDate Dec. 31, 2018
1 Year rr_AverageAnnualReturnYear01 (9.70%)
Since Inception rr_AverageAnnualReturnSinceInception (2.27%)
Inception Date of Class rr_AverageAnnualReturnInceptionDate Sep. 12, 2017
(American Beacon Shapiro Equity Opportunities Fund℠) | Investor Class | Returns After Taxes on Distributions  
Prospectus: rr_ProspectusTable  
1 Year rr_AverageAnnualReturnYear01 (10.60%)
Since Inception rr_AverageAnnualReturnSinceInception (3.05%)
Inception Date of Class rr_AverageAnnualReturnInceptionDate Sep. 12, 2017
(American Beacon Shapiro Equity Opportunities Fund℠) | Investor Class | Returns After Taxes on Distributions and Sales of Fund Shares  
Prospectus: rr_ProspectusTable  
1 Year rr_AverageAnnualReturnYear01 (5.56%)
Since Inception rr_AverageAnnualReturnSinceInception (1.96%)
Inception Date of Class rr_AverageAnnualReturnInceptionDate Sep. 12, 2017
(American Beacon Shapiro SMID Cap 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 appreciation.
Expense [Heading] rr_ExpenseHeading Fees and Expenses of the Fund
Expense Narrative [Text Block] rr_ExpenseNarrativeTextBlock
This table describes the fees and expenses that you may pay if you buy and hold shares of the Fund. More information is available from your financial professional and in "Choosing Your Share Class" on page 37 of the Prospectus. Although the Fund does not impose any sales charge on Y Class shares, you may pay a commission to your broker on your purchases and sales of those shares, which is not reflected in the tables or Example below.
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 October 31, 2020
Expenses Not Correlated to Ratio Due to Acquired Fund Fees [Text] rr_ExpensesNotCorrelatedToRatioDueToAcquiredFundFees The Total Annual Fund Operating Expenses do not correlate to the ratio of expenses to average net assets provided in the Fund's Financial Highlights table, which reflects the operating expenses of the Fund and does not include Acquired Fund Fees and Expenses.
Expense Example [Heading] rr_ExpenseExampleHeading Example
Expense Example Narrative [Text Block] rr_ExpenseExampleNarrativeTextBlock
This Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return each year and that the Fund's operating expenses remain the same, except that this Example reflects the fee waiver/expense reimbursement arrangement for each share class through October 31, 2020. Although your actual costs may be higher or lower, based on these assumptions, your costs would be:
Portfolio Turnover [Heading] rr_PortfolioTurnoverHeading Portfolio Turnover
Portfolio Turnover [Text Block] rr_PortfolioTurnoverTextBlock
The Fund pays transaction costs, such as commissions, when it buys and sells securities (or ''turns over'' its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Fund shares are held in a taxable account. These costs, which are not reflected in annual Fund operating expenses or in the Example, affect the Fund's performance. During the most recent fiscal year, the Fund's portfolio turnover rate was 56% of the average value of its portfolio.
Portfolio Turnover, Rate rr_PortfolioTurnoverRate 56.00%
Strategy [Heading] rr_StrategyHeading Principal Investment Strategies
Strategy Narrative [Text Block] rr_StrategyNarrativeTextBlock
Under normal circumstances, at least 80% of the Fund's net assets (plus the amount of any borrowings for investment purposes) are invested in equity securities of small- and mid-capitalization companies. The Fund considers a company to be a small- to mid-capitalization company if it has a market capitalization (stock market worth), at the time of investment, between $1 billion and the market capitalization of the largest company in the Russell 2500® Index, which was $17.2 Billion as of August 31, 2019.
The Fund will invest primarily in U.S. common stocks. Although the Fund will invest principally in small- and mid-capitalization companies, the Fund may invest in companies of all market capitalizations, including large-capitalization companies.
The Fund's investment sub-advisor, Shapiro Capital Management LLC ("Shapiro"), seeks to achieve the Fund's investment objective by implementing an intensive fundamental research process to select a focused portfolio of approximately 20 – 35 stocks. Shapiro uses this investment approach to identify companies with substantial operations, a high return on invested assets, products or services with a minimized chance of obsolescence and franchise-like characteristics with significant barriers to entry, and sound management with equity interest in the company. The Fund may have significant exposure to the Materials sector. However, as the sector composition of the Fund's portfolio changes over time, the Fund's exposure to the Materials sector may be lower at a future date, and the Fund's exposure to other market sectors may be higher.
The Fund may invest cash balances in other investment companies, including money market funds managed by the Manager, and may purchase and sell futures contracts on stock indices to gain market exposure on cash balances or reduce market exposure in anticipation of liquidity needs.
The Fund may seek to earn additional income by lending its securities to certain qualified broker-dealers and institutions on a short-term or long-term basis.
The Fund is non-diversified, which means that it is not limited to a percentage of assets that it may invest in any one issuer and may focus its investments in fewer issuers than a fund with a diversified portfolio.
Risk [Heading] rr_RiskHeading Principal Risks
Risk Narrative [Text Block] rr_RiskNarrativeTextBlock
There is no assurance that the Fund will achieve its investment objective and you could lose part or all of your investment in the Fund. The Fund is not designed for investors who need an assured level of income and is intended to be a long-term investment. The Fund is not a complete investment program and may not be appropriate for all investors. Investors should carefully consider their own investment goals and risk tolerance before investing in the Fund. The principal risks of investing in the Fund listed below are presented in alphabetical order, and not in order of importance or potential exposure, to facilitate your ability to find particular risks and compare them with the risks of other funds. Each risk summarized below is considered a "principal risk" of investing in the Fund, regardless of the order in which it appears.
Cybersecurity and Operational Risk
The Fund and its service providers, and shareholders' ability to transact with the Fund, may be negatively impacted due to operational risks arising from, among other problems: human errors, systems and technology disruptions or failures, or cybersecurity incidents. Cybersecurity incidents may allow an unauthorized party to gain access to Fund assets, customer data, or proprietary information, or cause the Fund or its service providers, as well as the securities trading venues and their service providers, to suffer data corruption or lose operational functionality. 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. 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.
Equity Investments Risk
Equity securities are subject to investment risk and market risk. The Fund may invest in the following equity securities, which may expose the Fund to the following additional risks:
  • Common Stock Risk. The value of a company's common stock may fall as a result of factors affecting the company, companies in the same industry or sector, or the financial markets overall. Common stock generally is subordinate to preferred stock upon the liquidation or bankruptcy of the issuing company.
Focused Holdings Risk
Because the Fund may have a focused portfolio, the increase or decrease of the value of a single investment may have a greater impact on the Fund's net asset value ("NAV") and total return when compared to other funds.
Futures Contracts Risk
Futures contracts are derivative instruments pursuant to a contract where the parties agree to a fixed price for an agreed amount of securities or other underlying assets at an agreed date. The use of such derivative instruments may expose the Fund to additional risks that it would not be subject to if it invested directly in the securities underlying those derivatives. There may at times be an imperfect correlation between the movement in the prices of futures contracts and the value of their underlying instruments or indexes. There can be no assurance that any strategy used will succeed. There also can be no assurance that, at all times, a liquid market will exist for offsetting a futures contract that the Fund has previously bought or sold and this may result in the inability to close a futures contract when desired. Futures contracts may experience potentially dramatic price changes, which will increase the volatility of the Fund and may involve a small investment of cash (the amount of initial and variation margin) relative to the magnitude of the risk assumed (the potential increase or decrease in the price of the futures contract).
Investment Risk
An investment in the Fund is not a deposit with a bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency. When you sell your shares of the Fund, they could be worth less than what you paid for them. Therefore, you may lose money by investing in the Fund.
Issuer Risk
The value of, and/or the return generated by, a security may decline for a number of reasons 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.
Large Capitalization Companies Risk
The securities of large market capitalization companies may underperform other segments of the market because such companies may be less responsive to competitive challenges and opportunities. Many larger capitalization companies also may be unable to attain the high growth rates of successful smaller companies, especially during periods of economic expansion.
Market Risk
The Fund is subject to the risk that the securities markets will move down, sometimes rapidly and unpredictably based on overall economic conditions and other factors. The value of a security may decline due to general market conditions which are not specifically related to a particular company, such as real or perceived adverse economic conditions, changes in the general outlook for corporate earnings, changes in interest or currency rates or adverse investment sentiment generally. Changes in the financial condition of a single issuer can impact a market as a whole. A rise in protectionist trade policies, risks associated with the United Kingdom's vote to leave the European Union, the risk of a trade dispute between the United States and China, and the possibility of changes to some international trade agreements, could affect the economies of many nations, including the United States, in ways that cannot necessarily be foreseen at the present time. The severity or duration of adverse economic conditions may also be affected by policy changes made by governments or quasi-governmental organizations. In addition, political and governmental events within the U.S. and abroad may affect investor and consumer confidence and may adversely impact financial markets and the broader economy, perhaps suddenly and to a significant degree.
Mid-Capitalization Companies Risk
Investing in the securities of mid-capitalization companies involves greater risk and the possibility of greater price volatility than investing in larger capitalization and more established companies. Since mid-capitalization companies may have narrower commercial markets and more limited operating history, product lines, and managerial and financial resources than larger, more established companies, the securities of these companies may lack sufficient market liquidity, and they can be particularly sensitive to expected changes in interest rates, borrowing costs and earnings.
Non-Diversification Risk
The Fund is non-diversified, which means it may focus its investments in the securities of a comparatively small number of issuers. Investments in securities of a limited number of issuers exposes the Fund to greater market risk, price volatility and potential losses than if assets were diversified among the securities of a greater number of issuers.
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. The Fund will be subject to the risks associated with investments in those companies, including but not limited to the following:
  • Money Market Funds. Investments in money market funds are subject to interest rate risk, credit risk, and market risk.
Sector Risk
When the Fund focuses its investments in certain sectors of the economy, its performance may be driven largely by sector performance and could fluctuate more widely than if the Fund were invested more evenly across sectors. 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.
  • Materials Sector Risk. Companies in the materials sector may be affected by commodity production and prices, consumer preferences, interest rates, exchange rates, product cycles, marketing, import controls, increased competition and resource depletion, among other factors. The materials sector may also be affected by economic cycles, technical progress, labor relations, environmental policies and government regulations.
Securities Lending Risk
The borrower of a Fund's securities must provide collateral in the form of cash or cash equivalents, securities of the U.S. Government and its agencies and instrumentalities, approved bank letters of credit, or other forms of collateral that are permitted by the SEC for registered investment companies in an amount at least equal to the value of the loaned securities. For loans collateralized with cash, the Fund invests the cash in other securities. To the extent the Fund lends its securities, it may be subject to the following risks: i) borrowers of the Fund's securities may provide collateral in the form of cash that is reinvested in securities, ii) the securities in which the cash collateral is invested may not perform sufficiently to cover the return collateral payments owed to borrowers, iii) delays may occur in the recovery of securities from borrowers, which could interfere with the Fund's ability to vote proxies or to settle transactions, and iv) there is the risk of possible loss of rights in the collateral should the borrower fail financially.
Securities Selection Risk
Securities selected by the sub-advisor for the Fund may not perform to expectations. This could result in the Fund's underperformance compared to its benchmark index(es), or other funds with similar investment objectives or strategies.
Small Capitalization Companies Risk
Investing in the securities of small-capitalization companies involves greater risk and the possibility of greater price volatility than investing in larger capitalization and more established companies. Since small-capitalization companies may have narrower commercial markets, and more limited operating history, product lines, and managerial and financial resources than larger, more established companies, the securities of these companies may lack sufficient market liquidity and they can be particularly sensitive to expected changes in interest rates, borrowing costs and earnings.
Value Stocks Risk
Value stocks are subject to the risk that their intrinsic value may never be realized by the market or that their prices may decline. The Fund's investments in value stocks seek to limit potential downside price risk over time; however, value stock prices still may decline substantially. In addition, the Fund may produce more modest gains as a trade-off for this potentially lower risk. The Fund's investment in value stocks could cause the Fund to underperform funds that use a growth or non-value approach to investing or have a broader investment style.
Risk Nondiversified Status [Text] rr_RiskNondiversifiedStatus Non-Diversification Risk The Fund is non-diversified, which means it may focus its investments in the securities of a comparatively small number of issuers. Investments in securities of a limited number of issuers exposes the Fund to greater market risk, price volatility and potential losses than if assets were diversified among the securities of a greater number of issuers.
Risk Lose Money [Text] rr_RiskLoseMoney There is no assurance that the Fund will achieve its investment objective and you could lose part or all of your investment in the Fund.
Risk Not Insured Depository Institution [Text] rr_RiskNotInsuredDepositoryInstitution An investment in the Fund is not a deposit with a bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.
Bar Chart and Performance Table [Heading] rr_BarChartAndPerformanceTableHeading Fund Performance
Performance Narrative [Text Block] rr_PerformanceNarrativeTextBlock
The bar chart and table below provide an indication of risk by showing changes in the Fund's performance over time. The bar chart shows the Fund's performance for the last calendar year. The table shows how the Fund's average annual total returns compare to a broad-based market index for the periods indicated.
You may obtain updated performance information on the Fund's website at www.americanbeaconfunds.com. Past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future.
Bar Chart [Heading] rr_BarChartHeading Calendar year total returns for Investor Class Shares. Year Ended 12/31
Bar Chart Closing [Text Block] rr_BarChartClosingTextBlock
Highest Quarterly Return:
11.26% 2nd Quarter 2018
01/01/2018 through 12/31/2018
Lowest Quarterly Return:
-22.71% 4th Quarter 2018
01/01/2018 through 12/31/2018
The calendar year-to-date total return as of September 30, 2019 was 16.28%
Performance Table Heading rr_PerformanceTableHeading Average annual total returns for periods ended December 31, 2018
Performance Table Closing [Text Block] rr_PerformanceTableClosingTextBlock
After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local income taxes. Actual after-tax returns depend on an investor's tax situation and may differ from those shown. The return after taxes on distributions and sale of Fund shares may exceed the return before taxes due to an assumed tax benefit from any losses on a sale of Fund shares at the end of the measurement period. If you are a tax-exempt entity or hold your Fund shares through a tax-deferred arrangement, such as an individual retirement account ("IRA") or a 401(k) plan, the after-tax returns do not apply to your situation. After-tax returns are shown only for Investor Class shares; after-tax returns for other share classes will vary.
Performance Table Uses Highest Federal Rate rr_PerformanceTableUsesHighestFederalRate After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local income taxes.
Performance Table Not Relevant to Tax Deferred rr_PerformanceTableNotRelevantToTaxDeferred If you 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 Explanation after Tax Higher rr_PerformanceTableExplanationAfterTaxHigher The return after taxes on distributions and sale of Fund shares may exceed the return before taxes due to an assumed tax benefit from any losses on a sale of Fund shares at the end of the measurement period.
Performance Past Does Not Indicate Future [Text] rr_PerformancePastDoesNotIndicateFuture Past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future.
Performance Information Illustrates Variability of Returns [Text] rr_PerformanceInformationIllustratesVariabilityOfReturns The bar chart and table below provide an indication of risk by showing changes in the Fund's performance over time. The bar chart shows the Fund's performance for the last calendar year. The table shows how the Fund's average annual total returns compare to a broad-based market index for the periods indicated.
Performance Table One Class of after Tax Shown [Text] rr_PerformanceTableOneClassOfAfterTaxShown After-tax returns are shown only for Investor Class shares; after-tax returns for other share classes will vary.
Performance Availability Website Address [Text] rr_PerformanceAvailabilityWebSiteAddress www.americanbeaconfunds.com
(American Beacon Shapiro SMID Cap Equity Fund℠) | Russell 2500 Index (Reflects no deduction for fees, expenses or taxes)  
Prospectus: rr_ProspectusTable  
1 Year rr_AverageAnnualReturnYear01 (10.00%)
Since Inception rr_AverageAnnualReturnSinceInception (1.70%)
(American Beacon Shapiro SMID Cap Equity Fund℠) | Class Y  
Prospectus: rr_ProspectusTable  
Maximum sales charge imposed on purchases (as a percentage of offering price) rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice none
Maximum deferred sales charge (as a percentage of the lower of original offering price or redemption proceeds) rr_MaximumDeferredSalesChargeOverOther none
Management Fee rr_ManagementFeesOverAssets 0.75%
Distribution and/or Services (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets none
Other Expenses rr_OtherExpensesOverAssets 2.12%
Acquired Fund Fees and Expenses rr_AcquiredFundFeesAndExpensesOverAssets 0.01%
Total Annual Fund Operating Expenses rr_ExpensesOverAssets 2.88% [3]
Fee Waiver and/or expense reimbursement rr_FeeWaiverOrReimbursementOverAssets (1.88%) [5]
Total Annual Fund Operating Expenses after fee waiver and/or expense reimbursement rr_NetExpensesOverAssets 1.00%
Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 $ 102
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 714
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 1,352
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 $ 3,069
1 Year rr_AverageAnnualReturnYear01 (16.58%)
Since Inception rr_AverageAnnualReturnSinceInception (7.49%)
Inception Date of Class rr_AverageAnnualReturnInceptionDate Sep. 12, 2017
(American Beacon Shapiro SMID Cap Equity Fund℠) | Institutional Class  
Prospectus: rr_ProspectusTable  
Maximum sales charge imposed on purchases (as a percentage of offering price) rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice none
Maximum deferred sales charge (as a percentage of the lower of original offering price or redemption proceeds) rr_MaximumDeferredSalesChargeOverOther none
Management Fee rr_ManagementFeesOverAssets 0.75%
Distribution and/or Services (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets none
Other Expenses rr_OtherExpensesOverAssets 2.09%
Acquired Fund Fees and Expenses rr_AcquiredFundFeesAndExpensesOverAssets 0.01%
Total Annual Fund Operating Expenses rr_ExpensesOverAssets 2.85% [3]
Fee Waiver and/or expense reimbursement rr_FeeWaiverOrReimbursementOverAssets (1.95%) [5]
Total Annual Fund Operating Expenses after fee waiver and/or expense reimbursement rr_NetExpensesOverAssets 0.90%
Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 $ 92
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 698
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 1,331
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 $ 3,035
1 Year rr_AverageAnnualReturnYear01 (16.56%)
Since Inception rr_AverageAnnualReturnSinceInception (7.41%)
Inception Date of Class rr_AverageAnnualReturnInceptionDate Sep. 12, 2017
(American Beacon Shapiro SMID Cap Equity Fund℠) | Investor Class  
Prospectus: rr_ProspectusTable  
Maximum sales charge imposed on purchases (as a percentage of offering price) rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice none
Maximum deferred sales charge (as a percentage of the lower of original offering price or redemption proceeds) rr_MaximumDeferredSalesChargeOverOther none
Management Fee rr_ManagementFeesOverAssets 0.75%
Distribution and/or Services (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets none
Other Expenses rr_OtherExpensesOverAssets 3.12%
Acquired Fund Fees and Expenses rr_AcquiredFundFeesAndExpensesOverAssets 0.01%
Total Annual Fund Operating Expenses rr_ExpensesOverAssets 3.88% [3]
Fee Waiver and/or expense reimbursement rr_FeeWaiverOrReimbursementOverAssets (2.60%) [5]
Total Annual Fund Operating Expenses after fee waiver and/or expense reimbursement rr_NetExpensesOverAssets 1.28%
Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 $ 130
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 944
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 1,777
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 $ 3,940
Annual Return 2018 rr_AnnualReturn2018 (16.78%)
Year to Date Return, Label rr_YearToDateReturnLabel The calendar year-to-date total return as of September 30, 2019 was 16.28%
Bar Chart, Year to Date Return rr_BarChartYearToDateReturn 16.28%
Bar Chart, Year to Date Return, Date rr_BarChartYearToDateReturnDate Sep. 30, 2019
Highest Quarterly Return, Label rr_HighestQuarterlyReturnLabel Highest Quarterly Return: 11.26% 2nd Quarter 2018 01/01/2018 through 12/31/2018
Highest Quarterly Return rr_BarChartHighestQuarterlyReturn 11.26%
Highest Quarterly Return, Date rr_BarChartHighestQuarterlyReturnDate Jun. 30, 2018
Lowest Quarterly Return, Label rr_LowestQuarterlyReturnLabel Lowest Quarterly Return: -22.71% 4th Quarter 2018 01/01/2018 through 12/31/2018
Lowest Quarterly Return rr_BarChartLowestQuarterlyReturn (22.71%)
Lowest Quarterly Return, Date rr_BarChartLowestQuarterlyReturnDate Dec. 31, 2018
1 Year rr_AverageAnnualReturnYear01 (16.78%)
Since Inception rr_AverageAnnualReturnSinceInception (7.72%)
Inception Date of Class rr_AverageAnnualReturnInceptionDate Sep. 12, 2017
(American Beacon Shapiro SMID Cap Equity Fund℠) | Investor Class | Returns After Taxes on Distributions  
Prospectus: rr_ProspectusTable  
1 Year rr_AverageAnnualReturnYear01 (19.41%)
Since Inception rr_AverageAnnualReturnSinceInception (9.97%)
Inception Date of Class rr_AverageAnnualReturnInceptionDate Sep. 12, 2017
(American Beacon Shapiro SMID Cap Equity Fund℠) | Investor Class | Returns After Taxes on Distributions and Sales of Fund Shares  
Prospectus: rr_ProspectusTable  
1 Year rr_AverageAnnualReturnYear01 (9.71%)
Since Inception rr_AverageAnnualReturnSinceInception (6.69%)
Inception Date of Class rr_AverageAnnualReturnInceptionDate Sep. 12, 2017
(American Beacon ARK Transformational Innovation Fund℠)  
Prospectus: rr_ProspectusTable  
Objective [Heading] rr_ObjectiveHeading Investment Objective
Objective, Primary [Text Block] rr_ObjectivePrimaryTextBlock
The Fund seeks long-term growth of capital.
Expense [Heading] rr_ExpenseHeading Fees and Expenses of the Fund
Expense Narrative [Text Block] rr_ExpenseNarrativeTextBlock
This table describes the fees and expenses that you may pay if you buy and hold shares of the Fund. You may qualify for sales discounts if you and your eligible family members invest, or agree to invest in the future, at least $50,000 in all classes of the American Beacon Funds on an aggregated basis. More information about these and other discounts is available from your financial professional and in "Choosing Your Share Class" on page 17 of the Prospectus and "Additional Purchase and Sale Information for A Class Shares" on page 36 of the statement of additional information ("SAI"). With respect to purchases of shares through specific intermediaries, you may find additional information regarding sales charge discounts and waivers in Appendix A to the Fund's Prospectus entitled "Intermediary Sales Charge Discounts and Waivers". Although the Fund does not impose any sales charge on Y Class shares, you may pay a commission to your broker on your purchases and sales of those shares, which is not reflected in the tables or Example below.
Expense Breakpoint Discounts [Text] rr_ExpenseBreakpointDiscounts 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 October 31, 2020
Other Expenses, New Fund, Based on Estimates [Text] rr_OtherExpensesNewFundBasedOnEstimates Other Expenses are based on estimated expenses for the current fiscal year.
Expenses Deferred Charges [Text Block] rr_ExpensesDeferredChargesTextBlock A contingent deferred sales charge (''CDSC'') of 0.50% will be charged on certain purchases of $1,000,000 or more of A Class shares that are redeemed in whole or part within 18 months of purchase.
Expenses Not Correlated to Ratio Due to Acquired Fund Fees [Text] rr_ExpensesNotCorrelatedToRatioDueToAcquiredFundFees The Total Annual Fund Operating Expenses do not correlate to the ratio of expenses to average net assets provided in the Fund's Financial Highlights table, which reflects the operating expenses of the Fund and does not include Acquired Fund Fees and Expenses.
Expense Example [Heading] rr_ExpenseExampleHeading Example
Expense Example Narrative [Text Block] rr_ExpenseExampleNarrativeTextBlock
This Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return each year and that the Fund's operating expenses remain the same, except that the Example reflects the fee waiver/expense reimbursement arrangement for each share class through October 31, 2020, and the tax liability reimbursement arrangement. 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 63% of the average value of its portfolio.
Portfolio Turnover, Rate rr_PortfolioTurnoverRate 63.00%
Strategy [Heading] rr_StrategyHeading Principal Investment Strategies
Strategy Narrative [Text Block] rr_StrategyNarrativeTextBlock
The Fund seeks to achieve long-term growth of capital by investing primarily in domestic and foreign equity securities of transformational innovation companies.
The sub-advisor defines transformational innovation companies as those with divisions that primarily focus on developing or benefitting from new products, services, technologies or advancements that disrupt, or are expected to disrupt, existing markets or processes. The types of transformational innovation companies that the Fund expects to invest in are those companies primarily engaged in research, including research relating to: (i) genomics ("Genomic Revolution Research"), (ii) industrial innovation ("Industrial Innovation Research"), (iii) shared technology and the internet ("Next Generation Internet Research"), or (iv) financial services ("FinTech Innovation Research"), among others. The sub-advisor uses internally-generated and externally-sourced research and analysis to assemble a diverse array of information from which to identify transformational innovation companies.
  • Genomic Revolution Research. The sub-advisor defines Genomic Revolution Research as research that focuses on extending and enhancing the quality of human, and other, life. This research incorporates technological and scientific developments, improvements and advancements in genomics (the study of genes, DNA and their functions, and related analytical techniques), bionics and products or services that improve and enhance life and fundamentally change existing industries. Genomic Sequencing refers to the techniques that allow researchers to read and decipher the genetic information found in DNA. Genomic Revolution Research may be classified in multiple sectors including health care, information technology, materials, energy and consumer discretionary.
  • Industrial Innovation Research. The sub-advisor defines Industrial Innovation Research as research that focuses on technological improvements and advancements in the industrial sectors, including energy, manufacturing, and transportation. For example, energy transformation companies may seek to develop innovations in areas of energy location, development, storage or usage. Transportation companies may seek to develop innovation in the areas of mobility, such as drones and self-driving cars. Manufacturing innovators may seek applications for robotics, 3D printing, and similar productivity-enhancing technologies.
  • Next Generation Internet Research. The sub-advisor defines Next Generation Internet Research as research that focuses on developments in the global technology infrastructure, including hardware, software and the shift to mobile devices. This research may incorporate shared technology, such as shared data storage and processing, computer network applications and internet security. Applications could include, those that link homes, automobiles and workplaces to mobile devices or other convenient media.
  • FinTech Innovation Research. The sub-advisor defines FinTech Innovation Research as that research that focuses on innovations in the financial sector including payment technologies, lending methods, currencies and business analytics. Technology-enabled enhancements in financial services may also interact with a variety of other innovation themes as the concepts of finance apply across industries and transactions.
The sub-advisor's process for identifying investments uses both ''top down'' (macro-economic and business cycle analysis) and ''bottom up'' (valuation, fundamental and quantitative measures) approaches to identify investment opportunities.
Under normal circumstances, substantially all of the Fund's assets are invested in a portfolio of equity securities including common stocks and other equity investments or ownership interests in business enterprises that are relevant to the Fund's investment theme of transformational innovation. The Fund's investments include issuers of all capitalizations. The Fund's investments in foreign equity securities are in both developed and emerging markets. The Fund invests in American Depositary Receipts (''ADRs'') and securities sold on foreign exchanges and securities denominated in foreign currencies when purchasing foreign equities. The Fund may engage in foreign currency transactions on a spot (cash) basis at the rate prevailing in the currency exchange market. The Fund may have significant exposure to the Health Care and Information Technology sectors. However, as the sector composition of the Fund's portfolio changes over time, the Fund's exposure to these sectors may be lower at a future date, and the Fund's exposure to other market sectors may be higher.
The sub-advisor may sell a security if it believes that a company has become disrupted or is no longer on the leading edge of fast-moving industries or innovation. The sub-advisor may also sell positions to (i) take advantage of opportunities created by short-term market actions or market sentiment, (ii) provide liquidity to invest in companies that the sub-advisor has relatively more confidence in, or (iii) invest in companies that the sub-advisor believes offer more market opportunity relative to their current price. The Fund at times may invest in shares of other investment companies, including money market funds and exchange-traded funds ("ETFs"), and may lend its securities to broker-dealers and other institutions to earn additional income. The Fund may invest in securities of investment companies advised by the Manager.
The Fund is non-diversified, which means that it may invest a high percentage of its assets in a limited number of issuers.
Risk [Heading] rr_RiskHeading Principal Risks
Risk Narrative [Text Block] rr_RiskNarrativeTextBlock
There is no assurance that the Fund will achieve its investment objective and you could lose part or all of your investment in the Fund. The Fund is not designed for investors who need an assured level of income and is intended to be a long-term investment. The Fund is not a complete investment program and may not be appropriate for all investors. Investors should carefully consider their own investment goals and risk tolerance before investing in the Fund. The principal risks of investing in the Fund listed below are presented in alphabetical order, and not in order of importance or potential exposure, to facilitate your ability to find particular risks and compare them with the risks of other funds. Each risk summarized below is considered a "principal risk" of investing in the Fund, regardless of the order in which it appears.
Allocation and Correlation Risk
The sub-advisor's judgments about, and allocations among, strategies, asset classes and market exposures may adversely affect the Fund's performance. There can be no assurance, particularly during periods of market disruption and stress, that the sub-advisor's judgements about asset allocation and market correlations will be correct. This risk may be increased by the use of derivatives to increase allocations to various market exposures.
Asset Selection Risk
Assets selected by the sub-advisor or the Manager for the Fund may not perform to expectations. The sub-advisor's investment models may rely in part on data derived from third parties and may not perform as intended. This could result in the Fund's underperformance compared to other funds with similar investment objectives.
Counterparty Risk
The Fund is subject to the risk that a party or participant to a transaction, such as a broker or derivative counterparty, will be unwilling or unable to satisfy its obligation to make timely principal, interest or settlement payments or to otherwise honor its obligations to the Fund.
Credit Risk
The Fund is subject to the risk that the counterparty to a derivatives contract or a loan, may fail, or become less able, to make timely payment of interest or principal or otherwise honor its obligations or default completely. Changes in the actual or perceived creditworthiness of an issuer, or a downgrade or default affecting any of the Fund's securities, could affect the Fund's performance.
Currency Risk
The Fund may have exposure to foreign currencies by using various instruments described below. Foreign currencies may fluctuate significantly over short periods of time, may be affected unpredictably by intervention, or the failure to intervene, of the U.S. or foreign governments or central banks, and may be affected by currency controls or political developments in the U.S. or abroad. Foreign currencies may also decline in value relative to the U.S. dollar and other currencies and thereby affect the Fund's investments in non-U.S. currencies or in securities that trade in, and receive revenues in, or in derivatives that provide exposure to, non-U.S. currencies. The Fund may gain exposure to foreign currencies because of its investments in one or more of the following:
  • Non-U.S. currencies
  • Securities denominated in non-U.S. currencies
Cybersecurity and Operational Risk
The Fund and its service providers, and shareholders' ability to transact with the Fund, may be negatively impacted due to operational risks arising from, among other problems: human errors, systems and technology disruptions or failures, or cybersecurity incidents. Cybersecurity incidents may allow an unauthorized party to gain access to Fund assets, customer data, or proprietary information, or cause the Fund or its service providers, as well as the securities trading venues and their service providers, to suffer data corruption or lose operational functionality. 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. 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.
Derivatives Risk
Derivatives may involve significant risk. The use of derivative instruments may expose the Fund to additional risks that it would not be subject to if it invested directly in the securities or other instruments underlying those derivatives, including the high degree of leverage often embedded in such instruments, and potential material and prolonged deviations between the theoretical value and realizable value of a derivative. Some derivatives have the potential for unlimited loss, regardless of the size of the Fund's initial investment. Derivatives may at times be illiquid, and the Fund may not be able to close out or sell a derivative at a particular time or at an anticipated price. Certain derivatives may be difficult to value, and valuation may be more difficult in times of market turmoil. Derivatives may also be more volatile than other types of investments. The Fund may buy or sell derivatives not traded on an exchange, which may be subject to heightened liquidity and valuation risk. Derivative investments can increase portfolio turnover and transaction costs. Derivatives also are subject to counterparty risk and credit risk. As a result, the Fund may not recover its investment or may only obtain a limited recovery, and any recovery may be delayed. Not all derivative transactions require a counterparty to post collateral, which may expose the Fund to greater losses in the event of a default by a counterparty. Ongoing changes to the regulation of the derivatives markets and potential changes in the regulation of funds using derivative instruments could limit the Fund's ability to pursue its investment strategies. New regulation of derivatives may make them more costly, or may otherwise adversely affect their liquidity, value or performance.
Emerging Markets Risk
When investing in emerging markets, the risks of investing in foreign securities, as discussed below, are heightened. Emerging markets are generally smaller, less developed, less liquid and more volatile than the securities markets of the U.S. and other developed markets. There are also risks of: greater political uncertainties; an economy's dependence on revenues from particular commodities or on international aid or development assistance; currency transfer restrictions; a limited number of potential buyers for such securities resulting in increased volatility and limited liquidity for emerging market securities; trading suspensions; and delays and disruptions in securities settlement procedures. 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 and financial reporting standards and requirements comparable to those to which U.S. companies are subject.
Equity Investments Risk
Equity securities are subject to investment risk and market risk. The Fund may invest in the following equity securities, which may expose the Fund to the following additional risks:
  • Common Stock Risk. The value of a company's common stock may fall as a result of factors affecting the company, companies in the same industry or sector, or the financial markets overall. Common stock generally is subordinate to preferred stock upon the liquidation or bankruptcy of the issuing company.
  • Depositary Receipts and U.S. Dollar-Denominated Foreign Stocks Traded on U.S. Exchanges Risk. Depositary receipts and U.S. dollar-denominated foreign stocks traded on U.S. exchanges are subject to certain of the risks associated with investing directly in foreign securities, including, but not limited to, currency exchange rate fluctuations, political and financial instability in the home country of a particular depositary receipt or foreign stock, less liquidity and more volatility, less government regulation and supervision and delays in transaction settlement.
Foreign Investing Risk
Non-U.S. investments carry potential risks not associated with U.S. investments. Such risks include, but are not limited to: (1) currency exchange rate fluctuations, (2) political and financial instability, (3) less liquidity, (4) lack of uniform accounting, auditing and financial reporting standards, (5) increased volatility, (6) different government regulation and supervision of foreign stock exchanges, brokers and listed companies, and (7) delays in transaction settlement in some foreign markets.
Hedging Risk
If the Fund uses a hedging instrument at the wrong time or judges the market conditions incorrectly, or the hedged instrument does not correlate to the risk sought to be hedged, the hedge might be unsuccessful, reduce the Fund's return, or create a loss. In addition, hedges, even when successful in mitigating risk, may not prevent the Fund from experiencing losses on its investments. Hedging instruments may also reduce or eliminate gains that may otherwise have been available had the Fund not used the hedging instruments.
Investment Risk
An investment in the Fund is not a deposit with a bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency. When you sell your shares of the Fund, they could be worth less than what you paid for them. Therefore, you may lose money by investing in the Fund.
Issuer Risk
The value of, and/or the return generated by, a security may decline for a number of reasons 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.
Large Capitalization Companies Risk
The securities of large market capitalization companies may underperform other segments of the market because such companies may be less responsive to competitive challenges and opportunities. Many larger capitalization companies also may be unable to attain the high growth rates of successful smaller companies, especially during periods of economic expansion.
Liquidity Risk
The Fund is susceptible to the risk that certain investments held by the Fund may have limited marketability or be subject to restrictions on sale, and may be difficult or impossible to purchase or sell at favorable times or prices. An inability to sell a portfolio position can adversely affect the Fund's value or prevent the Fund from being able to take advantage of other investment opportunities. The Fund could lose money if it is unable to dispose of an investment at a time that is most beneficial to the Fund. The Fund may be required to dispose of investments at unfavorable times or prices to satisfy obligations, which may result in losses or may be costly to the Fund. For example, the Fund may be forced to sell certain investments at unfavorable prices to meet redemption requests or other cash needs. Judgment plays a greater role in pricing illiquid investments than in investments with more active markets.
Market Risk
The Fund is subject to the risk that the securities markets will move down, sometimes rapidly and unpredictably based on overall economic conditions and other factors. The value of a security may decline due to general market conditions which are not specifically related to a particular company, such as real or perceived adverse economic conditions, changes in the general outlook for corporate earnings, changes in interest or currency rates or adverse investment sentiment generally. Changes in the financial condition of a single issuer can impact a market as a whole. A rise in protectionist trade policies, risks associated with the United Kingdom's vote to leave the European Union, the risk of a trade dispute between the United States and China, and the possibility of changes to some international trade agreements, could affect the economies of many nations, including the United States, in ways that cannot necessarily be foreseen at the present time. The severity or duration of adverse economic conditions may also be affected by policy changes made by governments or quasi-governmental organizations. In addition, political and governmental events within the U.S. and abroad may affect investor and consumer confidence and may adversely impact financial markets and the broader economy, perhaps suddenly and to a significant degree.
Market Timing Risk
The Fund is subject to the risk of market timing activities by investors due to the Fund's investments in foreign securities, or its exposure to foreign securities through the derivatives it holds. Frequent trading by Fund shareholders poses risks to other shareholders in the Fund, including (i) the dilution of the Fund's net asset value ("NAV"), (ii) an increase in the Fund's expenses, and (iii) interference with the portfolio manager's ability to execute efficient investment strategies.
Micro-Capitalization Companies Risk
Micro-capitalization companies are subject to substantially greater risks of loss and price fluctuations because their earnings and revenues tend to be less predictable. Since micro-capitalization companies may not have an operating history, product lines, or financial resources, their share prices tend to be more volatile and their markets less liquid than companies with larger market capitalizations, and they can be sensitive to expected changes in interest rates, borrowing costs and earnings. The shares of micro-capitalization companies tend to trade less frequently than those of larger, more established companies, which can adversely affect the pricing of these securities and the future ability to sell these securities.
Mid-Capitalization Companies Risk
Investing in the securities of mid-capitalization companies involves greater risk and the possibility of greater price volatility than investing in larger capitalization and more established companies. Since mid-capitalization companies may have narrower commercial markets and more limited operating history, product lines, and managerial and financial resources than larger, more established companies, the securities of these companies may lack sufficient market liquidity, and they can be particularly sensitive to expected changes in interest rates, borrowing costs and earnings.
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 or 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).
Non-Diversification Risk
The Fund is non-diversified, which means it may focus its investments in the securities of a comparatively small number of issuers. Investments in securities of a limited number of issuers exposes the Fund to greater market risk, price volatility and potential losses than if assets were diversified among the securities of a greater number of issuers.
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. The Fund will be subject to the risks associated with investments in those companies, including but not limited to the following:
  • ETFs. To the extent the Fund invests in exchange-traded funds ("ETFs") that invest in equity securities, fixed income securities and/or foreign securities, or track an index, the Fund is subject to the risks associated with the underlying investments held by the ETF or the index fluctuations to which the ETF is subject. Because ETFs are listed on an exchange, they may be subject to trading halts, may trade at a premium or discount to their net asset value ("NAV") and may not be liquid. An ETF that tracks an index may not precisely replicate the returns of its benchmark index.
  • Money Market Funds. Investments in money market funds are subject to interest rate risk, credit risk, and market risk.
Sector Risk
To the extent the Fund invests more heavily in particular sectors, its performance will be especially sensitive to developments and economic conditions that significantly affect those sectors. Individual sectors may move up and down more than the broader market. The industries that constitute a sector may all react in the same way to economic, political or regulatory events. Because the Fund may hold a limited number of securities, it may at times be substantially over-weighted in certain economic sectors and under-weighted in others. Accordingly, the Fund's performance is likely to be disproportionately affected by the factors influencing those sectors.
  • Health Care Sector Risk. The health care sector may be affected by government regulations and health care programs, restrictions on government reimbursement for medical expenses, increases or decreases in the cost of medical products and services and product liability claims, among other factors. Many health care companies are (i) heavily dependent on patent protection and intellectual property rights, such that the expiration of a patent may adversely affect their profitability, (ii) subject to extensive litigation based on product liability and similar claims, and (iii) subject to competitive forces that may make it difficult to raise prices and may result in price discounting. Many health care products and services may be subject to regulatory approvals. The process of obtaining such approvals may be long and costly, and delays in or failure to receive such approvals may negatively impact the business of such companies. Additional or more stringent laws and regulations enacted in the future could have a material adverse effect on companies in the health care sector.
Biotechnology Company Risk. In addition, issuers in the health care sector include issuers with their principal activities in the biotechnology industry, which has additional risks. A biotechnology company's valuation can often be based largely on the potential or actual performance of a limited number of products and can accordingly be greatly affected if one of its products proves unsafe, ineffective or unprofitable. Biotechnology companies are subject to regulation by, and the restrictions of, the U.S. Food and Drug Administration, the U.S. Environmental Protection Agency, state and local governments, and non-U.S. regulatory authorities.
  • Information Technology Sector Risk. The information technology sector includes companies engaged in internet 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 are heavily dependent on intellectual property and the loss of patent, copyright or trademark protections may adversely affect the profitability of these companies.
Financial Technology Company Risk . Financial Technology ("FinTech") companies generally face competition from much larger and more established firms. FinTech companies may not be able to capitalize on their disruptive technologies if they face political and/or legal attacks from competitors, industry groups or local and national governments. A FinTech company may not currently or in the future derive any revenue from innovative technologies.
Internet Company Risk. Many Internet-related companies have incurred large losses since their inception and may continue to incur large losses in the hope of capturing market share and generating future revenues. Accordingly, many such companies expect to incur significant operating losses for the foreseeable future, and may never be profitable. The markets in which many Internet companies compete face rapidly evolving industry standards, frequent new service and product announcements, introductions and enhancements and changing customer demands. The failure of an Internet company to adapt to such changes could have a material adverse effect on the company's business. In addition, the widespread adoption of new Internet, networking, or telecommunications technologies, or other technological changes, could require substantial expenditures by an Internet company to modify or adapt its services or infrastructure, which could have a material adverse effect on an Internet company's business.
Semiconductor Company Risk. Competitive pressures may have a significant effect on the financial condition of semiconductor companies and, as product cycles shorten and manufacturing capacity increases, these companies may become increasingly subject to aggressive pricing, which hampers profitability. Reduced demand for end-user products, under-utilization of manufacturing capacity, and other factors could adversely impact the operating results of companies in the semiconductor sector. Semiconductor companies typically face high capital costs and may be heavily dependent on intellectual property rights. The semiconductor sector is highly cyclical, which may cause the operating results of many semiconductor companies to vary significantly. The stock prices of companies in the semiconductor sector have been and likely will continue to be extremely volatile.
Next Generation Internet Companies Risk. The risks described above apply, in particular, to the Fund's investment in Web x.0 Companies, which the sub-advisor considers to be companies that are focused on and expected to benefit from shifting the bases of technology infrastructure from hardware and software to the cloud, enabling mobile and local services. This includes companies that rely on or benefit from the increased use of shared technology, infrastructure and services.
Internet Information Provider Company Risk. Internet information provider companies provide Internet navigation services and reference guide information and publish, provide or present proprietary, advertising and/or third party content. Such companies often derive a large portion of their revenues from advertising, and a reduction in spending by or loss of advertisers could seriously harm their business. This business is rapidly evolving and intensely competitive, and is subject to changing technologies, shifting user needs, and frequent introductions of new products and services. The research and development of new, technologically advanced products is a complex and uncertain process requiring high levels of innovation and investment, as well as the accurate anticipation of technology trends, market trends and consumer needs. The number of people who access the Internet is increasing dramatically and a failure to attract and retain a substantial number of such users to a company's products and services or to develop products and technologies that are more compatible with alternative devices could adversely affect operating results. Concerns regarding a company's products, services or processes that may compromise the privacy of users or other privacy related matters, even if unfounded, could damage a company's reputation and adversely affect operating results.
Securities Lending Risk
The borrower of a Fund's securities must provide collateral in the form of cash or cash equivalents, securities of the U.S. Government and its agencies and instrumentalities, approved bank letters of credit, or other forms of collateral that are permitted by the SEC for registered investment companies in an amount at least equal to the value of the loaned securities. For loans collateralized with cash, the Fund invests the cash in other securities. To the extent the Fund lends its securities, it may be subject to the following risks: i) borrowers of the Fund's securities may provide collateral in the form of cash that is reinvested in securities, ii) the securities in which the cash collateral is invested may not perform sufficiently to cover the return collateral payments owed to borrowers, iii) delays may occur in the recovery of securities from borrowers, which could interfere with the Fund's ability to vote proxies or to settle transactions, and iv) there is the risk of possible loss of rights in the collateral should the borrower fail financially.
Securities Selection Risk
Securities selected by the sub-advisor for the Fund may not perform to expectations. This could result in the Fund's underperformance compared to its benchmark index(es), or other funds with similar investment objectives or strategies.
Small Capitalization Companies Risk
Investing in the securities of small-capitalization companies involves greater risk and the possibility of greater price volatility than investing in larger capitalization and more established companies. Since small-capitalization companies may have narrower commercial markets, and more limited operating history, product lines, and managerial and financial resources than larger, more established companies, the securities of these companies may lack sufficient market liquidity and they can be particularly sensitive to expected changes in interest rates, borrowing costs and earnings.
Transformational Innovation Risk
Companies that the sub-advisor believes are capitalizing on transformational innovation and developing technologies to displace older technologies or create new markets may not in fact do so. Companies that initially develop a novel technology may not be able to capitalize on the technology. Companies that develop transformational technologies may face political or legal challenges from competitors, industry groups or local and national governments. These companies may also be exposed to risks applicable to sectors other than the transformational innovation theme for which they are chosen, and the securities issued by these companies may underperform the securities of other companies that are also focused on a particular theme.
Valuation Risk
The Fund may value certain assets at a price different from the price at which they can be sold. This risk may be especially pronounced for investments that are illiquid or may become illiquid, or securities that trade in relatively thin markets and/or markets that experience extreme volatility. The Fund's ability to value its 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.
Risk Nondiversified Status [Text] rr_RiskNondiversifiedStatus Non-Diversification Risk The Fund is non-diversified, which means it may focus its investments in the securities of a comparatively small number of issuers. Investments in securities of a limited number of issuers exposes the Fund to greater market risk, price volatility and potential losses than if assets were diversified among the securities of a greater number of issuers.
Risk Lose Money [Text] rr_RiskLoseMoney There is no assurance that the Fund will achieve its investment objective and you could lose part or all of your investment in the Fund.
Risk Not Insured Depository Institution [Text] rr_RiskNotInsuredDepositoryInstitution An investment in the Fund is not a deposit with a bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.
Bar Chart and Performance Table [Heading] rr_BarChartAndPerformanceTableHeading Fund Performance
Performance Narrative [Text Block] rr_PerformanceNarrativeTextBlock
The bar chart and table below provide an indication of risk by showing changes in the Fund's performance over time. The bar chart shows the Fund's performance for the last calendar year. The table shows how the Fund's average annual total returns compare to a broad-based market index for the periods indicated. The A Class and C Class shares of the Fund commenced operations on January 2, 2019. The performance for the A Class and C Class shares in the table below represents the returns achieved by the Fund's Institutional Class shares from January 27, 2017 through December 31, 2018. The A Class and C Class shares would have had similar annual returns to the Institutional Class shares, because the shares are invested in the same portfolio securities. However, because the Institutional Class shares has lower expenses than the A Class shares and C Class shares, its performance was better than the performance the A Class shares and C Class shares would have realized in the same period. The A Class shares and C Class shares performance shown in the table has not been adjusted for differences in operating expenses of the newer and older share classes, but the A Class shares and C Class shares performance has been adjusted for the impact of the maximum applicable sales charge. You may obtain updated performance information on the Fund's website at www.americanbeaconfunds.com. Past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future.
Bar Chart [Heading] rr_BarChartHeading Calendar year total returns for Investor Class Shares. Year Ended 12/31
Bar Chart Closing [Text Block] rr_BarChartClosingTextBlock
Highest Quarterly Return:
13.42% 2nd Quarter 2018
01/01/2018 through 12/31/2018
Lowest Quarterly Return:
-18.98% 4th Quarter 2018
01/01/2018 through 12/31/2018
The calendar year-to-date total return as of September 30, 2019 was 12.88%.
Performance Table Heading rr_PerformanceTableHeading Average annual total returns for periods ended December 31, 2018
Performance Table Closing [Text Block] rr_PerformanceTableClosingTextBlock
After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local income taxes. Actual after-tax returns depend on an investor's tax situation and may differ from those shown. The return after taxes on distributions and sale of Fund shares may exceed the return before taxes due to an assumed tax benefit from any losses on a sale of Fund shares at the end of the measurement period. If you are a tax-exempt entity or hold your Fund shares through a tax-deferred arrangement, such as an individual retirement account ("IRA") or a 401(k) plan, the after-tax returns do not apply to your situation. After-tax returns are shown only for Investor Class shares; after-tax returns for other share classes will vary.
Performance Table Uses Highest Federal Rate rr_PerformanceTableUsesHighestFederalRate After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local income taxes.
Performance Table Not Relevant to Tax Deferred rr_PerformanceTableNotRelevantToTaxDeferred If you 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 Explanation after Tax Higher rr_PerformanceTableExplanationAfterTaxHigher The return after taxes on distributions and sale of Fund shares may exceed the return before taxes due to an assumed tax benefit from any losses on a sale of Fund shares at the end of the measurement period.
Performance Past Does Not Indicate Future [Text] rr_PerformancePastDoesNotIndicateFuture Past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future.
Performance Information Illustrates Variability of Returns [Text] rr_PerformanceInformationIllustratesVariabilityOfReturns The bar chart and table below provide an indication of risk by showing changes in the Fund's performance over time. The bar chart shows the Fund's performance for the last calendar year. The table shows how the Fund's average annual total returns compare to a broad-based market index for the periods indicated.
Performance Table One Class of after Tax Shown [Text] rr_PerformanceTableOneClassOfAfterTaxShown After-tax returns are shown only for Investor Class shares; after-tax returns for other share classes will vary.
Performance Availability Website Address [Text] rr_PerformanceAvailabilityWebSiteAddress www.americanbeaconfunds.com
(American Beacon ARK Transformational Innovation Fund℠) | S&P 500 Index (Reflects no deduction for fees, expenses or taxes)  
Prospectus: rr_ProspectusTable  
1 Year rr_AverageAnnualReturnYear01 (4.38%)
Since Inception rr_AverageAnnualReturnSinceInception 6.82%
Inception Date of Class rr_AverageAnnualReturnInceptionDate Jan. 27, 2017
(American Beacon ARK Transformational Innovation Fund℠) | Class A  
Prospectus: rr_ProspectusTable  
Maximum sales charge imposed on purchases (as a percentage of offering price) rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice 5.75%
Maximum deferred sales charge (as a percentage of the lower of original offering price or redemption proceeds) rr_MaximumDeferredSalesChargeOverOther 0.50% [6]
Management Fee rr_ManagementFeesOverAssets 0.90%
Distribution and/or Services (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets 0.25%
Other Expenses rr_OtherExpensesOverAssets 1.16% [7]
Acquired Fund Fees and Expenses rr_AcquiredFundFeesAndExpensesOverAssets 0.01%
Total Annual Fund Operating Expenses rr_ExpensesOverAssets 2.32% [8]
Fee Waiver and/or expense reimbursement rr_FeeWaiverOrReimbursementOverAssets (0.91%) [9],[10]
Total Annual Fund Operating Expenses after fee waiver and/or expense reimbursement rr_NetExpensesOverAssets 1.41%
Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 $ 710
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 1,176
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 1,666
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 $ 3,012
1 Year rr_AverageAnnualReturnYear01 (8.55%)
Since Inception rr_AverageAnnualReturnSinceInception 25.08%
Inception Date of Class rr_AverageAnnualReturnInceptionDate Jan. 02, 2019
(American Beacon ARK Transformational Innovation Fund℠) | Class C  
Prospectus: rr_ProspectusTable  
Maximum sales charge imposed on purchases (as a percentage of offering price) rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice none
Maximum deferred sales charge (as a percentage of the lower of original offering price or redemption proceeds) rr_MaximumDeferredSalesChargeOverOther 1.00%
Management Fee rr_ManagementFeesOverAssets 0.90%
Distribution and/or Services (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets 1.00%
Other Expenses rr_OtherExpensesOverAssets 1.35% [7]
Acquired Fund Fees and Expenses rr_AcquiredFundFeesAndExpensesOverAssets 0.01%
Total Annual Fund Operating Expenses rr_ExpensesOverAssets 3.26% [8]
Fee Waiver and/or expense reimbursement rr_FeeWaiverOrReimbursementOverAssets (1.10%) [9],[10]
Total Annual Fund Operating Expenses after fee waiver and/or expense reimbursement rr_NetExpensesOverAssets 2.16%
Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 $ 319
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 901
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 1,608
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 3,483
Expense Example, No Redemption, 1 Year rr_ExpenseExampleNoRedemptionYear01 219
Expense Example, No Redemption, 3 Years rr_ExpenseExampleNoRedemptionYear03 901
Expense Example, No Redemption, 5 Years rr_ExpenseExampleNoRedemptionYear05 1,608
Expense Example, No Redemption, 10 Years rr_ExpenseExampleNoRedemptionYear10 $ 3,483
1 Year rr_AverageAnnualReturnYear01 (3.98%)
Since Inception rr_AverageAnnualReturnSinceInception 28.99%
Inception Date of Class rr_AverageAnnualReturnInceptionDate Jan. 02, 2019
(American Beacon ARK Transformational Innovation Fund℠) | Class Y  
Prospectus: rr_ProspectusTable  
Maximum sales charge imposed on purchases (as a percentage of offering price) rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice none
Maximum deferred sales charge (as a percentage of the lower of original offering price or redemption proceeds) rr_MaximumDeferredSalesChargeOverOther none
Management Fee rr_ManagementFeesOverAssets 0.90%
Distribution and/or Services (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets none
Other Expenses rr_OtherExpensesOverAssets 1.04%
Acquired Fund Fees and Expenses rr_AcquiredFundFeesAndExpensesOverAssets 0.01%
Total Annual Fund Operating Expenses rr_ExpensesOverAssets 1.95% [8]
Fee Waiver and/or expense reimbursement rr_FeeWaiverOrReimbursementOverAssets (0.84%) [9],[10]
Total Annual Fund Operating Expenses after fee waiver and/or expense reimbursement rr_NetExpensesOverAssets 1.11%
Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 $ 113
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 531
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 974
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 $ 2,207
1 Year rr_AverageAnnualReturnYear01 (3.04%)
Since Inception rr_AverageAnnualReturnSinceInception 28.86%
Inception Date of Class rr_AverageAnnualReturnInceptionDate Jan. 27, 2017
(American Beacon ARK Transformational Innovation Fund℠) | Institutional Class  
Prospectus: rr_ProspectusTable  
Maximum sales charge imposed on purchases (as a percentage of offering price) rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice none
Maximum deferred sales charge (as a percentage of the lower of original offering price or redemption proceeds) rr_MaximumDeferredSalesChargeOverOther none
Management Fee rr_ManagementFeesOverAssets 0.90%
Distribution and/or Services (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets none
Other Expenses rr_OtherExpensesOverAssets 0.84%
Acquired Fund Fees and Expenses rr_AcquiredFundFeesAndExpensesOverAssets 0.01%
Total Annual Fund Operating Expenses rr_ExpensesOverAssets 1.75% [8]
Fee Waiver and/or expense reimbursement rr_FeeWaiverOrReimbursementOverAssets (0.74%) [9],[10]
Total Annual Fund Operating Expenses after fee waiver and/or expense reimbursement rr_NetExpensesOverAssets 1.01%
Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 $ 103
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 478
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 880
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 $ 2,001
1 Year rr_AverageAnnualReturnYear01 (2.98%)
Since Inception rr_AverageAnnualReturnSinceInception 28.99%
Inception Date of Class rr_AverageAnnualReturnInceptionDate Jan. 27, 2017
(American Beacon ARK Transformational Innovation Fund℠) | Investor Class  
Prospectus: rr_ProspectusTable  
Maximum sales charge imposed on purchases (as a percentage of offering price) rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice none
Maximum deferred sales charge (as a percentage of the lower of original offering price or redemption proceeds) rr_MaximumDeferredSalesChargeOverOther none
Management Fee rr_ManagementFeesOverAssets 0.90%
Distribution and/or Services (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets none
Other Expenses rr_OtherExpensesOverAssets 1.13%
Acquired Fund Fees and Expenses rr_AcquiredFundFeesAndExpensesOverAssets 0.01%
Total Annual Fund Operating Expenses rr_ExpensesOverAssets 2.04% [8]
Fee Waiver and/or expense reimbursement rr_FeeWaiverOrReimbursementOverAssets (0.65%) [9],[10]
Total Annual Fund Operating Expenses after fee waiver and/or expense reimbursement rr_NetExpensesOverAssets 1.39%
Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 $ 144
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 577
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 1,038
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 $ 2,317
Annual Return 2018 rr_AnnualReturn2018 (3.30%)
Year to Date Return, Label rr_YearToDateReturnLabel The calendar year-to-date total return as of September 30, 2019 was 12.88%.
Bar Chart, Year to Date Return rr_BarChartYearToDateReturn 12.88%
Bar Chart, Year to Date Return, Date rr_BarChartYearToDateReturnDate Sep. 30, 2019
Highest Quarterly Return, Label rr_HighestQuarterlyReturnLabel Highest Quarterly Return: 13.42% 2nd Quarter 2018 01/01/2018 through 12/31/2018
Highest Quarterly Return rr_BarChartHighestQuarterlyReturn 13.42%
Highest Quarterly Return, Date rr_BarChartHighestQuarterlyReturnDate Jun. 30, 2018
Lowest Quarterly Return, Label rr_LowestQuarterlyReturnLabel Lowest Quarterly Return: -18.98% 4th Quarter 2018 01/01/2018 through 12/31/2018
Lowest Quarterly Return rr_BarChartLowestQuarterlyReturn (18.98%)
Lowest Quarterly Return, Date rr_BarChartLowestQuarterlyReturnDate Dec. 31, 2018
1 Year rr_AverageAnnualReturnYear01 (3.30%)
Since Inception rr_AverageAnnualReturnSinceInception 28.52%
Inception Date of Class rr_AverageAnnualReturnInceptionDate Jan. 27, 2017
(American Beacon ARK Transformational Innovation Fund℠) | Investor Class | Returns After Taxes on Distributions  
Prospectus: rr_ProspectusTable  
1 Year rr_AverageAnnualReturnYear01 (5.08%)
Since Inception rr_AverageAnnualReturnSinceInception 26.29%
Inception Date of Class rr_AverageAnnualReturnInceptionDate Jan. 27, 2017
(American Beacon ARK Transformational Innovation Fund℠) | Investor Class | Returns After Taxes on Distributions and Sales of Fund Shares  
Prospectus: rr_ProspectusTable  
1 Year rr_AverageAnnualReturnYear01 (1.29%)
Since Inception rr_AverageAnnualReturnSinceInception 21.57%
Inception Date of Class rr_AverageAnnualReturnInceptionDate Jan. 27, 2017
(American Beacon TwentyFour Strategic Income 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 and hold shares of the Fund. You may qualify for sales discounts if you and your eligible family members invest, or agree to invest in the future, at least $50,000 in all classes of the American Beacon Funds on an aggregated basis. More information about these and other discounts is available from your financial professional and in "Choosing Your Share Class" on page 28 of the Prospectus and "Additional Purchase and Sale Information for A Class Shares" on page 48 of the statement of additional information ("SAI"). With respect to purchases of shares through specific intermediaries, you may find additional information regarding sales charge discounts and waivers in Appendix A to the Fund's Prospectus entitled "Intermediary Sales Charge Discounts and Waivers". Although the Fund does not impose any sales charge on Y Class shares, you may pay a commission to your broker on your purchases and sales of those shares, which is not reflected in the tables or Example below.
Expense Breakpoint Discounts [Text] rr_ExpenseBreakpointDiscounts 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 October 31, 2020
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 the Example reflects the fee waiver/expense reimbursement arrangement for each share class through October 31, 2020. 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 198% of the average value of its portfolio.
Portfolio Turnover, Rate rr_PortfolioTurnoverRate 198.00%
Strategy [Heading] rr_StrategyHeading Principal Investment Strategies
Strategy Narrative [Text Block] rr_StrategyNarrativeTextBlock
Under normal circumstances, the Fund invests primarily in fixed-income securities and derivatives that provide exposure to fixed-income securities. The Fund's investments may include fixed-income instruments of any maturity or duration. The instruments in which the Fund may invest may be denominated in U.S. and non-U.S. currencies.
The fixed-income securities in which the Fund invests primarily include obligations issued or guaranteed by the U.S. government and non-U.S. governments and their agencies, instrumentalities or political subdivisions, obligations of supranational entities, quasi-sovereign debt, emerging-markets debt, inflation-indexed securities, corporate bonds, bank loans, trust preferred securities, convertible and non-convertible debt, contingent convertible bonds ("CoCos"), variable and floating-rate securities, collateralized loan obligations ("CLOs"), mortgage-backed and other asset-backed securities, collateralized mortgage obligations ("CMOs") and other mortgage-related products (including commercial and residential loans). The Fund may invest in other investment companies, including exchange-traded funds ("ETFs") and money market funds, shares of real estate investment trusts ("REITs") and restricted securities. The Fund may have significant exposure to the Financial sector. However, as the sector composition of the Fund's portfolio changes over time, the Fund's exposure to the Financial sector may be lower at a future date, and the Fund's exposure to other market sectors may be higher.
The Fund may invest a significant portion of its total assets in non-investment grade securities (also referred to as "high-yield" or ''junk" bonds), and in U.S. Treasury obligations.
The Fund may also invest in equity securities including preferred stocks of U.S. and foreign companies of any market capitalization.
The Fund may take long or short positions in fixed-income and equity securities and currencies. Short positions will generally be entered into for hedging purposes or to attempt to reduce or adjust certain investment risks.
The Fund's investments in derivatives generally include options, futures, forwards (including non-deliverable forwards), swaps (including credit default swaps, total return swaps, interest rate swaps and cross-currency swaps) and structured notes. The Fund uses derivative instruments to hedge against fluctuations in securities prices, interest rates or currency exchange rates, to enhance total return, to change the effective duration of its portfolio, to manage certain investment risks or to substitute for the purchase or sale of the underlying securities or currencies. The Fund's use of derivatives may be extensive.
In selecting investments, the Fund's sub-advisor develops a top-down macroeconomic view of the global economic environment as indicated by factors such as interest rates, equity markets, corporate profitability, international capital flows, government policy and other relevant inputs. The sub-advisor then performs a bottom-up analysis of individual issuers that focuses on an issuer's creditworthiness and considers historical trends and patterns in an instrument's price and relative valuation. The sub-advisor examines the relative risk and return characteristics of each investment and seeks to identify opportunities to establish long positions in income-generating instruments that, at times, may have the potential for price appreciation. The sub-advisor also seeks to reduce or hedge positions in instruments that may decline in value or experience unwanted volatility or when better investment opportunities are identified.
Risk [Heading] rr_RiskHeading Principal Risks
Risk Narrative [Text Block] rr_RiskNarrativeTextBlock
There is no assurance that the Fund will achieve its investment objectives and you could lose part or all of your investment in the Fund. The Fund is not designed for investors who need an assured level of current income and is intended to be a long-term investment. The Fund is not a complete investment program and may not be appropriate for all investors. Investors should carefully consider their own investment goals and risk tolerance before investing in the Fund. The principal risks of investing in the Fund listed below are presented in alphabetical order, and not in order of importance or potential exposure, to facilitate your ability to find particular risks and compare them with the risks of other funds. Each risk summarized below is considered a "principal risk" of investing in the Fund, regardless of the order in which it appears.
Allocation Risk
The sub-advisor's judgments about, and allocations among, strategies, asset classes and market exposures may adversely affect the Fund's performance. There can be no assurance, particularly during periods of market disruption and stress, that the sub-advisor's judgements about asset allocation will be correct. This risk may be increased by the use of derivatives to increase allocations to various market exposures.
Asset-Backed and Mortgage Related Securities Risk
Investments in asset-backed and mortgage related securities are subject to market risks for fixed-income securities which include, but are not limited to, credit risk, interest rate risk, prepayment risk and extension risk. A decline in the credit quality of the issuers of asset-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.
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.
Collateralized Loan Obligations ("CLOs") Risk
The risks of an investment in a CLO depend largely on the type of the collateral securities and the class of the instrument in which the Fund invests. The Fund typically will invest in CLOs collateralized by senior bank loans. Therefore, the CLOs in which the Fund invests will be subject to loan interests risk. In addition, CLOs normally are privately offered and sold, and thus, are not registered under the securities laws. As a result, investments in CLOs may be characterized by the Fund as illiquid securities. CLOs carry the general risks applicable to other fixed income investments, including interest rate risk, credit risk, market risk and liquidity risk. CLOs also carry additional risks including, but not limited to: (i) the possibility that distributions from collateral securities will not be adequate to make interest or other payments; (ii) the quality of the collateral may decline in value or default; (iii) the risk that the Fund may invest in CLOs that are subordinate to other classes; and (iv) the complex structure of the security may not be fully understood at the time of investment and may produce disputes with the issuer or unexpected investment results.
Contingent Convertible Securities ("CoCos") Risk
Contingent convertible securities ("CoCos") either are converted into equity securities of the issuer or have their principal written down if the issuer's capital falls below a predetermined "trigger" level. CoCos are subordinated debt and the Fund's claims will generally be junior to the claims of other creditors if the issuer liquidates or dissolves. Interest payments on CoCos could be canceled by the issuer or a regulator. If the issuer converts the CoCo to an equity security, the Fund would lose interest payments and potentially all income. The Fund's investment would be even further subordinated if a CoCo were converted to an equity security. The issuer could alternatively write down the principal due on the CoCos. The write-down of the security's par value may occur automatically and would not entitle holders to institute bankruptcy proceedings against the issuer. In addition, an automatic write-down could result in a reduced income rate if the dividend or interest payment associated with the security is based on the security's par value, or even a complete loss on investment with no chance of recovery. CoCos carry the general risks applicable to other fixed income investments, including interest rate risk, credit risk, market risk and liquidity risk.
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 risks of stocks when the underlying stock's price is high relative to the conversion price and is subject to the 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. In addition, to the extent the Fund invests in convertible securities issued by small- or mid-cap companies, it will be subject to the risks of investing in such companies. The stocks of small- and mid-cap companies may fluctuate more widely in price than the market as a whole and there may also be less trading in small- or mid-cap stocks. Convertible securities are sensitive to movement in interest rates.
Counterparty Risk
The Fund is subject to the risk that a party or participant to a transaction, such as a broker or derivative counterparty, will be unwilling or unable to satisfy its obligation to make timely principal, interest or settlement payments or to otherwise honor its obligations to the Fund.
Credit Risk
The Fund is subject to the risk that the issuer or guarantor of an obligation, or the counterparty to a transaction, including a derivatives contract or a loan, may fail, or become less able, to make timely payment of interest or principal or otherwise honor its obligations or default completely. Credit risk is typically greater for securities with ratings that are below investment grade (commonly referred to as "junk bonds"). Since the Fund can invest significantly in high yield investments that are considered speculative in nature, this risk may be substantial. Changes in the actual or perceived creditworthiness of an issuer, or a downgrade or default affecting any of the Fund's securities, could affect the Fund's performance.
Currency Risk
The Fund may have exposure to foreign currencies by using various instruments described below. Foreign currencies may fluctuate significantly over short periods of time, may be affected unpredictably by intervention, or the failure to intervene, of the U.S. or foreign governments or central banks, and may be affected by currency controls or political developments in the U.S. or abroad. Foreign currencies may also decline in value relative to the U.S. dollar and other currencies and thereby affect the Fund's investments in non-U.S. currencies or in securities that trade in, and receive revenues in, or in derivatives that provide exposure to, non-U.S. currencies. The Fund may gain exposure to foreign currencies because of its investments in one or more of the following:
  • Non-U.S. currencies
  • Securities denominated in non-U.S. currencies
  • Foreign currency forward contracts, including non-deliverable forwards ("NDFs"), which are described below under "Derivatives Risk"
  • Non-U.S. currency futures contracts, which are described below under "Derivatives Risk"
  • Options on non-U.S. currencies and non-U.S. currency futures, which are described below under "Derivatives Risk"
  • Swaps for cross-currency transactions, which are described below under "Derivatives Risk"
Cybersecurity and Operational Risk
The Fund and its service providers, and shareholders' ability to transact with the Fund, may be negatively impacted due to operational risks arising from, among other problems: human errors, systems and technology disruptions or failures, or cybersecurity incidents. Cybersecurity incidents may allow an unauthorized party to gain access to Fund assets, customer data, or proprietary information, or cause the Fund or its service providers, as well as the securities trading venues and their service providers, to suffer data corruption or lose operational functionality. 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. 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.
Derivatives Risk
Derivatives may involve significant risk. The use of derivative instruments may expose the Fund to additional risks that it would not be subject to if it invested directly in the securities or other instruments underlying those derivatives, including the high degree of leverage often embedded in such instruments, and potential material and prolonged deviations between the theoretical value and realizable value of a derivative. Some derivatives have the potential for unlimited loss, regardless of the size of the Fund's initial investment. Derivatives may at times be illiquid, and the Fund may not be able to close out or sell a derivative at a particular time or at an anticipated price. Certain derivatives may be difficult to value, and valuation may be more difficult in times of market turmoil. Derivatives may also be more volatile than other types of investments. The Fund may buy or sell derivatives not traded on an exchange, which may be subject to heightened liquidity and valuation risk. Derivative investments can increase portfolio turnover and transaction costs. Derivatives also are subject to counterparty risk and credit risk. As a result, the Fund may not recover its investment or may only obtain a limited recovery, and any recovery may be delayed. Not all derivative transactions require a counterparty to post collateral, which may expose the Fund to greater losses in the event of a default by a counterparty. Ongoing changes to the regulation of the derivatives markets and potential changes in the regulation of funds using derivative instruments could limit the Fund's ability to pursue its investment strategies. New regulation of derivatives may make them more costly, or may otherwise adversely affect their liquidity, value or performance. In addition, the Fund's investments in derivatives are subject to the following risks:
  • Futures and Forward Contracts Risk. Futures and forward contracts, including NDFs, are derivative instruments pursuant to a contract where the parties agree to a fixed price for an agreed amount of securities or other underlying assets at an agreed date or to buy or sell a specific currency at a future date at a price set at the time of the contract. There may at times be an imperfect correlation between the movement in the prices of futures contracts and the value of their underlying instruments or indexes. There are no limitations on daily price movements of forward contracts. There can be no assurance that any strategy used will succeed. Not all forward contracts, including NDFs, require a counterparty to post collateral, which may expose the Fund to greater losses in the event of a default by a counterparty. There can be no assurance that, at all times, a liquid market will exist for offsetting a futures contract that the Fund has previously bought or sold and this may result in the inability to close a futures contract when desired. Forward currency transactions, including NDFs, and forward currency contracts include the risks associated with fluctuations in currency. Interest rate and Treasury futures contracts expose the Fund to price fluctuations resulting from changes in interest rates. The Fund could suffer a loss if interest rates rise after the Fund has purchased an interest rate futures contract or fall after the Fund has sold an interest rate futures contract. Similarly, Treasury futures contracts expose the Fund to potential losses if interest rates do not move as expected.
  • Options Risk. In order for a call option to be profitable, the market price of the underlying security or index must rise sufficiently above the call option exercise price to cover the premium and any transaction costs. These costs will reduce any profit that might otherwise have been realized had the Fund bought the underlying security instead of the call option. For a put option to be profitable, the market price of the underlying security or index must decline sufficiently below the put option's exercise price to cover the premium and any transaction costs. By using put options in this manner, the Fund will reduce any profit it might otherwise have realized from having shorted the declining underlying security by the premium paid for the put option and by transaction costs. If an option that the Fund has purchased expires unexercised, the Fund will experience a loss in the amount of the premium it paid. If the Fund sells a put option, there is a risk that the Fund may be required to buy the underlying asset at a disadvantageous price. If the Fund sells a call option, there is a risk that the Fund may be required to sell the underlying asset at a disadvantageous price. If the Fund sells a call option on an underlying asset that the Fund owns, and the underlying asset has increased in value when the call option is exercised, the Fund will be required to sell the underlying asset at the call price and will not be able to realize any of the underlying asset's value above the call price. If a call option that the Fund has sold is unexercised, the Fund will experience a gain or loss from the sale of the underlying instrument. If a call option that the Fund has sold is unexercised, the Fund will experience a gain or loss from the sale of the underlying instrument. There can be no guarantee that the use of options will increase the Fund's return or income. In addition, there may be an imperfect correlation between the movement in prices of options and the securities underlying them, and there may at times not be a liquid secondary market for options.
  • Structured Notes Risk. Structured notes are derivative debt instruments with principal and/or interest payments linked to the value of a commodity, a foreign currency, an index of securities, an interest rate, or other financial indicators ("reference instruments"). The payments on a structured note may vary based on changes in one or more specified reference instruments, such as a floating interest rate compared to a fixed interest rate, the exchange rates between two currencies, one or more securities or a securities or commodities index. If the underlying investment or index does not perform as anticipated, the structured note might pay less interest than the stated coupon payment or repay less principal upon maturity. The movement of such factors may cause significant price fluctuations. A structured note may be positively or negatively indexed. Structured notes are subject to interest rate risk and market risk. They are also subject to credit risk with respect both to the issuer and, if applicable, to the underlying security or borrower. Structured notes may have a limited trading market, making it difficult to value them or sell them at an acceptable price.
  • Swap Agreements Risk. Swaps can involve greater risks than a direct investment in an underlying asset, because swaps typically include a certain amount of embedded leverage and as such are subject to leverage risk. If swaps are used as a hedging strategy, the Fund is subject to the risk that the hedging strategy may not eliminate the risk that it is intended to offset, due to, among other reasons, the occurrence of unexpected price movements or the non-occurrence of expected price movements. Swaps also may be difficult to value. Swaps may be subject to liquidity risk and counterparty risk, and swaps that are traded over-the-counter are not subject to standardized clearing requirements and may involve greater liquidity and counterparty risks. In addition, the Fund may invest in the following types of swaps:
Credit default swaps, which may be subject to credit risk and the risks associated with the purchase and sale of credit protection.
Cross-currency swaps, which may be subject to currency risk and credit risk.
Interest rate swaps, which may be subject to interest rate risk and credit risk.
Total return swaps, which may be subject to credit risk and, if the underlying securities are bonds or other debt obligations, market risk and interest rate risk.
Emerging Markets Risk
When investing in emerging markets, the risks of investing in foreign securities, as discussed below, are heightened. Emerging markets are generally smaller, less developed, less liquid and more volatile than the securities markets of the U.S. and other developed markets. There are also risks of: greater political uncertainties; an economy's dependence on revenues from particular commodities or on international aid or development assistance; currency transfer restrictions; a limited number of potential buyers for such securities resulting in increased volatility and limited liquidity for emerging market securities; trading suspensions; and delays and disruptions in securities settlement procedures. 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 and financial reporting standards and requirements comparable to those to which U.S. companies are subject.
Equity Investments Risk
Equity securities are subject to investment risk and market risk. The Fund may invest in the following equity securities, which may expose the Fund to the following additional risks:
  • Preferred Stock Risk. Preferred stocks are sensitive to movements in interest rates. Preferred stocks may be less liquid than common stocks and, unlike common stocks, participation in the growth of an issuer may be limited. Distributions on preferred stocks generally are payable at the discretion of an issuer and after required payments to bond holders. In certain situations, an issuer may call or redeem its preferred stock or convert it to common stock. The market prices of preferred stocks are generally more sensitive to actual or perceived changes in the issuer's financial condition or prospects than are the prices of debt securities.
  • Real Estate Investment Trusts ("REITs") Risk. Investments in REITs are subject to the risks associated with investing in the real estate industry, including, among other risks: adverse developments affecting the real estate industry; declines in real property values; changes in interest rates; defaults by mortgagors or other borrowers and tenants; lack of availability of mortgage funds or financing; extended vacancies of properties, especially during economic downturns; casualty or condemnation losses; and governmental actions, such as changes to tax laws, zoning regulations or environmental regulations. REITs also are dependent upon the skills of their managers and are subject to heavy cash flow dependency or self-liquidation. Domestic REITs could be adversely affected by failure to qualify for tax-free "pass-through" of distributed net income and net realized gains under the Internal Revenue Code of 1986, as amended ("Internal Revenue Code"), or to maintain their exemption from registration under the Investment Company Act of 1940, as amended ("Investment Company Act"). REITs typically incur fees that are separate from those incurred by the Fund. Accordingly, the Fund's investment in REITs will result in the layering of expenses such that shareholders will indirectly bear a proportionate share of the REITs' operating expenses, in addition to paying Fund expenses. The value of REIT common stock may decline when interest rates rise.
Flexible Strategy Risk
The Fund uses a variety of investment strategies to achieve its investment objective. The sub-advisor does not attempt to keep the portfolio structure or the Fund's performance consistent with any designated stock, bond or market index, and during times of market rallies, the Fund may not perform as well as other funds that seek to outperform an index. Over time, the investment performance of flexible strategies is typically substantially independent of longer term movements in the stock and bond market.
Foreign Investing Risk
Non-U.S. investments carry potential risks not associated with U.S. investments. Such risks include, but are not limited to: (1) currency exchange rate fluctuations, (2) political and financial instability, (3) less liquidity, (4) lack of uniform accounting, auditing and financial reporting standards, (5) increased volatility, (6) different government regulation and supervision of foreign stock exchanges, brokers and listed companies, and (7) delays in transaction settlement in some foreign markets.
Hedging Risk
If the Fund uses a hedging instrument at the wrong time or judges the market conditions incorrectly, or the hedged instrument does not correlate to the risk sought to be hedged, the hedge might be unsuccessful, reduce the Fund's return, or create a loss. In addition, hedges, even when successful in mitigating risk, may not prevent the Fund from experiencing losses on its investments. Hedging instruments may also reduce or eliminate gains that may otherwise have been available had the Fund not used the hedging instruments.
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.
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.
Illiquid and Restricted Securities Risk
Securities not registered in the U.S. under the Securities Act of 1933, as amended (the "Securities Act") or in non-U.S. markets pursuant to similar regulations, including Rule 144A securities, are restricted as to their resale. Such securities may not be listed on an exchange and may have no active trading market. The prices of these securities may be more difficult to determine than publicly traded securities and these securities may involve heightened risk as compared to investments in securities of publicly traded companies. They may be more difficult to purchase or sell at an advantageous time or price because such securities may not be readily marketable in broad public markets, or may have to be held for a certain time period before they can be resold. The Fund may not be able to sell a restricted security when the sub-advisor considers it desirable to do so and/or may have to sell the security at a lower price than the Fund believes is its fair market value. In addition, transaction costs may be higher for restricted securities and the Fund may receive only limited information regarding the issuer of a restricted security. The Fund may have to bear the expense of registering restricted securities for resale and the risk of substantial delays in effecting the registration.
Inflation Index-Linked Securities Risk
Unlike a conventional bond, whose issuer makes regular fixed interest payments and repays the face value of the bond at maturity, an inflation index-linked security provides principal payments and interest payments that vary as the principal and/or interest are adjusted over time to reflect a rise or a drop in the reference inflation-related index. For inflation index-linked debt securities for which repayment of the original principal upon maturity (as adjusted for inflation) is not guaranteed, the adjusted principal value of the securities repaid at maturity may be less than the original principal value. The value of inflation index-linked securities is expected to change in response to real interest rates. The price of an inflation index-linked security generally falls when real interest rates rise and rises when real interest rates fall. In periods of deflation, the Fund may have no income at all from such investments.
Interest Rate Risk
The Fund is subject to the risk that the market value of fixed income securities or derivatives it holds will decline due to rising interest rates. Generally, the value of investments with interest rate risk, such as fixed income securities, will move in the opposite direction to movements in interest rates. The Federal Reserve has raised the federal funds rate several times since December 2015 and may increase or decrease rates in the future. Interest rates may rise, perhaps significantly and/or rapidly, potentially resulting in substantial losses to the Fund. The prices of fixed income securities or derivatives are also affected by their durations. Fixed income securities or derivatives with longer durations generally have greater sensitivity to changes in interest rates. For example, if a bond has a duration of eight years, a 1% increase in interest rates could be expected to result in an 8% decrease in the value of the bond. An increase in interest rates can impact markets broadly as well. Some investors buy securities and derivatives with borrowed money; an increase in interest rates can cause a decline in those markets. To the extent the Fund holds an investment with a negative interest rate to maturity, the Fund would generate a negative return on that investment.
Investment Risk
An investment in the Fund is not a deposit with a bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency. When you sell your shares of the Fund, they could be worth less than what you paid for them. Therefore, you may lose money by investing in the Fund.
Issuer Risk
The value of, and/or the return generated by, a security may decline for a number of reasons 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.
Large Capitalization Companies Risk
The securities of large market capitalization companies may underperform other segments of the market because such companies may be less responsive to competitive challenges and opportunities. Many larger capitalization companies also may be unable to attain the high growth rates of successful smaller companies, especially during periods of economic expansion.
Leverage Risk
The Fund's use of derivative instruments and selling securities short will have the economic effect of financial leverage. Financial leverage magnifies the exposure to the swings in prices of an asset or class of assets underlying a derivative instrument and may result in increased volatility, which means that the Fund will have the potential for greater losses than if the Fund does not use the derivative instruments that have a leveraging effect. Leverage may result in losses that exceed the amount originally invested and may accelerate the rate of losses. Leverage tends to magnify, sometimes significantly, the effect of any increase or decrease in the Fund's exposure to an asset or class of assets and may cause the Fund's net asset value ("NAV") per share to be volatile. There can be no assurance that the Fund's use of leverage will be successful.
LIBOR Risk
The Fund's investments, payment obligations and financing terms may be based on floating rates, such as London Interbank Offer Rate ("LIBOR"), Euro Interbank Offered Rate and other similar types of reference rates (each, a "Reference Rate"). On July 27, 2017, the Chief Executive of the UK Financial Conduct Authority ("FCA"), which regulates LIBOR, announced that the FCA will no longer persuade nor require banks to submit rates for the calculation of LIBOR and certain other Reference Rates after 2021. Such announcement indicates that the continuation of LIBOR and other Reference Rates on the current basis cannot and will not be guaranteed after 2021. This announcement and any additional regulatory or market changes may have an adverse impact on the Fund or its investments, including increased volatility or illiquidity in markets for instruments that rely on LIBOR.
In advance of 2021, regulators and market participants are working together to identify or develop successor Reference Rates. Additionally, prior to 2021, it is expected that market participants will focus on the transition mechanisms by which the Reference Rates in existing contracts or instruments may be amended, whether through marketwide protocols, fallback contractual provisions, bespoke negotiations or amendments or otherwise. Nonetheless, the termination of certain Reference Rates presents risks to the Fund. At this time, it is not possible to completely identify or predict the effect of any such changes, any establishment of alternative Reference Rates or any other reforms to Reference Rates that may be enacted in the UK or elsewhere. The elimination of a Reference Rate or any other changes or reforms to the determination or supervision of Reference Rates could have an adverse impact on the market for or value of any securities or payments linked to those Reference Rates and other financial obligations held by the Fund or on its overall financial condition or results of operations. In addition, any substitute Reference Rate and any pricing adjustments imposed by a regulator or by counterparties or otherwise may adversely affect the Fund's performance and/or NAV.
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. 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 due to 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.
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 the borrower defaults, the Fund's access to the collateral may be limited or delayed by bankruptcy or other insolvency laws. Loans trade in an over-the-counter market, and confirmation and settlement, which are effected through standardized procedures and documentation, may take significantly longer than seven days to complete. Extended trade settlement periods may, in unusual market conditions with a high volume of shareholder redemptions, present a risk to shareholders regarding the Fund's ability to pay redemption proceeds within the allowable time periods stated in its prospectus. The secondary market for floating rate loans also may be subject to irregular trading activity and wide bid/ask spreads. The lack of an active trading market for certain loans may impair the ability of the Fund to sell its loan interests at a time when it may otherwise be desirable to do so or may require the Fund to sell them at prices that are less than what the Fund regards as their fair market value and may make it difficult to value such loans. 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. The Fund may acquire a loan interest by obtaining an assignment of all or a portion of the interests in a particular loan that are held by an original lender or a prior assignee. As an assignee, the Fund normally will succeed to all rights and obligations of its assignor with respect to the portion of the loan that is being assigned. However, the rights and obligations acquired by the purchaser of a loan assignment may differ from, and be more limited than, those held by the original lenders or the assignor. Alternatively, the Fund may acquire a participation in a loan interest that is held by another party. When the Fund's loan interest is a participation, the Fund is subject to the risk that the party selling the participation interest will not remit the Fund's pro rata share of loan payments to the Fund, and the Fund may have less control over the exercise of remedies than the party selling the participation interest.
Market Risk
In recent periods, fixed income instruments have experienced unusual liquidity issues, increased price volatility and, in some cases, credit downgrades and increased likelihood of default. These events have reduced the willingness and ability of some lenders to extend credit, and have made it more difficult for some borrowers to obtain financing on attractive terms, if at all. In addition, global economies and financial markets are becoming increasingly interconnected, which increases the possibilities that conditions in one country or region might adversely impact issuers in a different country or region. A rise in protectionist trade policies, risks associated with the United Kingdom's vote to leave the European Union, the risk of a trade dispute between the United States and China, and the possibility of changes to some international trade agreements, could affect the economies of many nations, including the United States, in ways that cannot necessarily be foreseen at the present time. The severity or duration of adverse economic conditions may also be affected by policy changes made by governments or quasi-governmental organizations. In addition, political and governmental events within the U.S. and abroad may affect investor and consumer confidence and may adversely impact financial markets and the broader economy, perhaps suddenly and to a significant degree. High public debt in the U.S. and other countries creates ongoing systemic and market risks and policymaking uncertainty. Because the impact on the markets has been widespread, it may be difficult to identify both risks and opportunities using past models of the interplay of market forces, or to predict the duration of these market conditions. Interest rates have been unusually low in recent years in the U.S. and abroad. Because there is little precedent for this situation, it is difficult to predict the impact on various markets of a significant rate increase, whether brought about by U.S. policy makers or by dislocations in world markets. In addition, there is a risk that the prices of goods and services in the U.S. and many foreign economies may decline over time, known as deflation (the opposite of inflation). Deflation may have an adverse effect on stock prices and creditworthiness and may make defaults on debt more likely.
Market Timing Risk
The Fund is subject to the risk of market timing activities by investors due to the Fund's investments in foreign securities, or its exposure to foreign securities through the derivatives it holds. Frequent trading by Fund shareholders poses risks to other shareholders in the Fund, including (i) the dilution of the Fund's net asset value ("NAV"), (ii) an increase in the Fund's expenses, and (iii) interference with the portfolio manager's ability to execute efficient investment strategies.
Mid-Capitalization Companies Risk
Investing in the securities of mid-capitalization companies involves greater risk and the possibility of greater price volatility than investing in larger capitalization and more established companies. Since mid-capitalization companies may have narrower commercial markets and more limited operating history, product lines, and managerial and financial resources than larger, more established companies, the securities of these companies may lack sufficient market liquidity, and they can be particularly sensitive to expected changes in interest rates, borrowing costs and earnings.
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. The Fund will be subject to the risks associated with investments in those companies, including but not limited to the following:
  • ETFs. To the extent the Fund invests in exchange-traded funds ("ETFs") that invest in equity securities, fixed income securities and/or foreign securities, or track an index, the Fund is subject to the risks associated with the underlying investments held by the ETF or the index fluctuations to which the ETF is subject. Because ETFs are listed on an exchange, they may be subject to trading halts, may trade at a premium or discount to their net asset value ("NAV") and may not be liquid. An ETF that tracks an index may not precisely replicate the returns of its benchmark index.
  • Money Market Funds. Investments in money market funds are subject to interest rate risk, credit risk, and market risk.
Prepayment and Extension Risk
Prepayment risk is the risk that the principal amount of a bond may be repaid prior to the bond's maturity date. Due to a decline in interest rates or excess cash flow, a debt security may be called or otherwise prepaid before maturity. If this occurs, no additional interest will be paid on the investment. The Fund may have to invest at a lower rate, may not benefit from an increase in value that may result from declining interest rates, and may lose any premium it paid to acquire the security. Variable and floating rate securities may be less sensitive to prepayment risk. Extension risk is the risk that a decrease in prepayments may, as a result of higher interest rates or other factors, result in the extension of a security's effective maturity, heighten interest rate risk and increase the potential for a decline in its price.
Redemption Risk
The Fund may experience periods of high levels of redemptions that could cause the Fund to sell assets at inopportune times or at a loss or depressed value. The sale of assets to meet redemption requests may create net capital gains, which could cause the Fund to have to distribute substantial capital gains. Redemption risk is heightened during periods of declining or illiquid markets. Additionally, during periods of heavy redemptions, the Fund may borrow funds through the Fund's interfund credit facility, which may increase costs and heighten the Fund's redemption risk. A rise in interest rates or other market developments may cause investors to move out of fixed income securities on a large scale. Heavy redemptions could hurt the Fund's performance.
Sector Risk
When the Fund focuses its investments in certain sectors of the economy, its performance may be driven largely by sector performance and could fluctuate more widely than if the Fund were invested more evenly across sectors. 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.
  • Financial Sector Risk. Financial services companies are subject to extensive governmental regulation, which may limit both the amounts and types of loans and other financial commitments they can make, the interest rates and fees they can charge, the scope of their activities, the prices they can charge and the amount of capital they must maintain. Profitability is largely dependent on the availability and cost of capital funds and can fluctuate significantly when interest rates change or due to increased competition. In addition, deterioration of the credit markets generally may cause an adverse impact in a broad range of markets, including U.S. and international credit and interbank money markets generally, thereby affecting a wide range of financial institutions and markets. Certain events in the financial sector may cause an unusually high degree of volatility in the financial markets, both domestic and foreign, and cause certain financial services companies to incur large losses. Securities of financial services companies may experience a dramatic decline in value when such companies experience substantial declines in the valuations of their assets, take action to raise capital (such as the issuance of debt or equity securities), or cease operations.
Securities Selection Risk
Securities selected by the sub-advisor for the Fund may not perform to expectations. It may not be possible to predict or to hedge against a widening in the yield spread of the securities selected by the sub-advisor. This could result in the Fund's underperformance compared to its benchmark index(es), or other funds with similar investment objectives or strategies.
Segregated Assets Risk
In connection with certain transactions that may give rise to future payment obligations, the Fund may be required to maintain a segregated amount of, or otherwise earmark, cash or liquid securities to cover the obligation. Segregated assets generally cannot be sold while the position they are covering is outstanding, unless they are replaced with other assets of equal value. The need to maintain cash or other liquid securities in segregated accounts could limit the Fund's ability to pursue other opportunities as they arise.
Short Position Risk
The Fund will incur a loss as a result of a short position if the price of the instrument sold short increases in value between the date of the short sale and the date on which an offsetting position is purchased. Short positions may be considered speculative transactions and involve special risks, including greater reliance on the sub-advisor's ability to accurately anticipate the future value of a security or instrument. The Fund's losses are potentially unlimited in a short position transaction because there is potentially no limit on the amount that the security that the Fund is required to purchase may have appreciated. Because the Fund may invest the proceeds of a short sale, another effect of short selling on the Fund is similar to the effect of leverage, in that short selling may amplify changes in the Fund's NAV since it may increase the exposure of the Fund to certain markets and may increase losses and the volatility of returns.
Small Capitalization Companies Risk
Investing in the securities of small-capitalization companies involves greater risk and the possibility of greater price volatility than investing in larger capitalization and more established companies. Since small-capitalization companies may have narrower commercial markets, and more limited operating history, product lines, and managerial and financial resources than larger, more established companies, the securities of these companies may lack sufficient market liquidity and they can be particularly sensitive to expected changes in interest rates, borrowing costs and earnings.
Sovereign and Quasi-Sovereign Debt Risk
Sovereign or quasi-sovereign debt securities are subject to risk of payment delays or defaults due to, among other things: (1) country cash flow problems, (2) insufficient foreign currency reserves, (3) political considerations, (4) large debt positions relative to the country's economy, (5) policies toward foreign lenders or investors, (6) the failure to implement economic reforms required by the International Monetary Fund or other multilateral agencies, or (7) an inability or unwillingness to repay debts. It may be particularly difficult to enforce the rights of debt holders in emerging markets. A governmental entity that defaults on an obligation may request additional time in which to repay loans, may request further loans, or may seek to restructure its obligations to reduce interest rates or outstanding principal. There is no legal process for collecting sovereign and quasi-sovereign debt that a government does not pay, nor are there bankruptcy proceedings through which all or part of the sovereign debt that a governmental entity has not repaid may be collected. Sovereign and quasi-sovereign debt risk is increased for emerging markets issuers, which are among the largest debtors to commercial banks and foreign governments. At times, certain emerging market countries have declared moratoria on the payment of principal and interest on external debt. Certain emerging market countries have experienced difficulty in servicing their sovereign debt on a timely basis, which has led to defaults and the restructuring of certain indebtedness.
Supranational Risk
Obligations of supranational entities are subject to the risk that the governments on whose support the entity depends for its financial backing or repayment may be unable or unwilling to provide that support. Political changes in principal donor nations may also unexpectedly disrupt the finances of supranational entities. Obligations of a supranational entity that are denominated in non-U.S. currencies will also be subject to the risks associated with investments in non-U.S. currencies.
Trust Preferred Securities Risk
Trust preferred securities are subject to market risk, interest rate risk and credit risk. Holders of the trust preferred securities have limited voting rights to control the activities of the trust and no voting rights with respect to the parent company. Trust preferred securities prices fluctuate for several reasons, including changes in the financial condition of an issuer, investors' perception of the financial condition of an issuer, or the general economic condition of the market for trust preferred securities.
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.
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 shut down, may also cause investors to lose confidence in the U.S. government and may cause the value of U.S. Treasury obligations to decline.
U.S. Government Securities and Government-Sponsored Enterprises Risk
A security backed by the U.S. Treasury or the full faith and credit of the United States is guaranteed only as to the timely payment of interest and principal when held to maturity. The market prices for such securities are not guaranteed and will fluctuate. Securities held by the Fund that are issued by government-sponsored enterprises, such as the Federal National Mortgage Association (''Fannie Mae''), Federal Home Loan Mortgage Corporation (''Freddie Mac''), Federal Home Loan Bank (''FHLB''), Federal Farm Credit Bank ("FFCB"), and the Tennessee Valley Authority, are not guaranteed by the U.S. Treasury and are not backed by the full faith and credit of the U.S. Government, and no assurance can be given that the U.S. Government will provide financial support if these organizations do not have the funds to meet future payment obligations. U.S. Government securities and securities of government-sponsored entities are also subject to credit risk, interest rate risk and market risk.
Valuation Risk
The Fund may value certain assets at a price different from the price at which they can be sold. This risk may be especially pronounced for investments that are illiquid or may become illiquid, or securities that trade in relatively thin markets and/or markets that experience extreme volatility. The Fund's ability to value its 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.
Variable and Floating Rate Securities Risk
The coupons on variable and floating-rate securities are not fixed and may fluctuate based upon changes in market rates. The coupon on a floating rate security is generally based on an interest rate, such as a money-market index, the London Interbank Offered Rate ("LIBOR") or a Treasury bill rate. Variable and floating rate securities are subject to interest rate risk and credit risk. As short-term interest rates decline, the coupons on floating-rate securities typically decrease. Alternatively, during periods of rising interest rates, the coupons on floating-rate securities typically increase. Changes in the coupons of floating-rate securities may lag behind changes in market rates or may have limits on the maximum increases in the coupon rates. The value of floating-rate securities may decline if their coupons do not rise as much, or as quickly, as interest rates in general. Floating rate securities will not generally increase in value if interest rates decline. Certain types of floating rate instruments may be subject to greater liquidity risk than other debt securities.
Risk Lose Money [Text] rr_RiskLoseMoney There is no assurance that the Fund will achieve its investment objectives and you could lose part or all of your investment in the Fund.
Risk Not Insured Depository Institution [Text] rr_RiskNotInsuredDepositoryInstitution An investment in the Fund is not a deposit with a bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.
Bar Chart and Performance Table [Heading] rr_BarChartAndPerformanceTableHeading Fund Performance
Performance Narrative [Text Block] rr_PerformanceNarrativeTextBlock
The bar chart and table below provide an indication of risk by showing changes in the Fund's performance over time. The bar chart shows the Fund's performance for the last calendar year. The table shows how the Fund's average annual total returns compare to a broad-based market index for the periods indicated. The performance for the A Class and C Class shares represents the returns achieved by the Fund's Institutional Class shares from April 3, 2017 through October 28, 2018, and the returns achieved by the Fund's A Class and C Class shares, respectively, from October 29, 2018 through December 31, 2018. The A Class and C Class shares would have had similar annual returns to the Institutional Class shares, because the shares are invested in the same portfolio securities. However, because the Institutional Class shares has lower expenses than the A Class and C Class shares, its performance was better than the performance the A Class and C Class shares would have realized in the same period. The A Class and C Class shares performance shown in the table has not been adjusted for differences in operating expenses of the newer and older share classes, but the A Class and C Class shares performance has been adjusted for the impact of the maximum applicable sales charge. You may obtain updated performance information on the Fund's website at www.americanbeaconfunds.com. Past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future.
Bar Chart [Heading] rr_BarChartHeading Calendar year total returns for Investor Class Shares. Year Ended 12/31
Bar Chart Closing [Text Block] rr_BarChartClosingTextBlock
Highest Quarterly Return:
1.41% 3rd Quarter 2018
01/01/2018 through 12/31/2018
Lowest Quarterly Return:
-1.95% 4th Quarter 2018
01/01/2018 through 12/31/2018
The calendar year-to-date total return as of September 30, 2019 was 9.56%
Performance Table Heading rr_PerformanceTableHeading Average annual total returns for periods ended December 31, 2018
Performance Table Closing [Text Block] rr_PerformanceTableClosingTextBlock
After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local income taxes. Actual after-tax returns depend on an investor's tax situation and may differ from those shown. The return after taxes on distributions and sale of Fund shares may exceed the return before taxes due to an assumed tax benefit from any losses on a sale of Fund shares at the end of the measurement period. If you are a tax-exempt entity or hold your Fund shares through a tax-deferred arrangement, such as an individual retirement account ("IRA") or a 401(k) plan, the after-tax returns do not apply to your situation. After-tax returns are shown only for Investor Class shares; after-tax returns for other share classes will vary.
Performance Table Uses Highest Federal Rate rr_PerformanceTableUsesHighestFederalRate After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local income taxes.
Performance Table Not Relevant to Tax Deferred rr_PerformanceTableNotRelevantToTaxDeferred If you 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 Explanation after Tax Higher rr_PerformanceTableExplanationAfterTaxHigher The return after taxes on distributions and sale of Fund shares may exceed the return before taxes due to an assumed tax benefit from any losses on a sale of Fund shares at the end of the measurement period.
Performance Past Does Not Indicate Future [Text] rr_PerformancePastDoesNotIndicateFuture Past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future.
Performance Information Illustrates Variability of Returns [Text] rr_PerformanceInformationIllustratesVariabilityOfReturns The bar chart and table below provide an indication of risk by showing changes in the Fund's performance over time. The bar chart shows the Fund's performance for the last calendar year. The table shows how the Fund's average annual total returns compare to a broad-based market index for the periods indicated.
Performance Table One Class of after Tax Shown [Text] rr_PerformanceTableOneClassOfAfterTaxShown After-tax returns are shown only for Investor Class shares; after-tax returns for other share classes will vary.
Performance Availability Website Address [Text] rr_PerformanceAvailabilityWebSiteAddress www.americanbeaconfunds.com
(American Beacon TwentyFour Strategic Income Fund℠) | ICE BofAML U.S. Dollar LIBOR 3-Month Constant Maturity Index (Reflects no deduction for fees, expenses or taxes)  
Prospectus: rr_ProspectusTable  
1 Year rr_AverageAnnualReturnYear01 2.08%
Since Inception rr_AverageAnnualReturnSinceInception 1.69%
Inception Date of Class rr_AverageAnnualReturnInceptionDate Apr. 03, 2017
(American Beacon TwentyFour Strategic Income Fund℠) | Bloomberg Barclays Global Aggregate Index (Reflects no deduction for fees, expenses or taxes)  
Prospectus: rr_ProspectusTable  
1 Year rr_AverageAnnualReturnYear01 (1.20%)
Since Inception rr_AverageAnnualReturnSinceInception 2.34%
Inception Date of Class rr_AverageAnnualReturnInceptionDate Apr. 03, 2017
(American Beacon TwentyFour Strategic Income Fund℠) | Class A  
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 of the lower of original offering price or redemption proceeds) rr_MaximumDeferredSalesChargeOverOther 0.50% [11]
Management Fee rr_ManagementFeesOverAssets 0.67%
Distribution and/or Services (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets 0.25%
Other Expenses rr_OtherExpensesOverAssets 0.86%
Total Annual Fund Operating Expenses rr_ExpensesOverAssets 1.78%
Fee Waiver and/or expense reimbursement rr_FeeWaiverOrReimbursementOverAssets (0.66%) [12]
Total Annual Fund Operating Expenses after fee waiver and/or expense reimbursement rr_NetExpensesOverAssets 1.12%
Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 $ 485
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 852
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 1,244
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 $ 2,339
1 Year rr_AverageAnnualReturnYear01 (4.64%)
Since Inception rr_AverageAnnualReturnSinceInception 0.97%
Inception Date of Class rr_AverageAnnualReturnInceptionDate Oct. 29, 2018
(American Beacon TwentyFour Strategic Income Fund℠) | Class C  
Prospectus: rr_ProspectusTable  
Maximum sales charge imposed on purchases (as a percentage of offering price) rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice none
Maximum deferred sales charge (as a percentage of the lower of original offering price or redemption proceeds) rr_MaximumDeferredSalesChargeOverOther 1.00%
Management Fee rr_ManagementFeesOverAssets 0.67%
Distribution and/or Services (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets 1.00%
Other Expenses rr_OtherExpensesOverAssets 0.91%
Total Annual Fund Operating Expenses rr_ExpensesOverAssets 2.58%
Fee Waiver and/or expense reimbursement rr_FeeWaiverOrReimbursementOverAssets (0.71%) [12]
Total Annual Fund Operating Expenses after fee waiver and/or expense reimbursement rr_NetExpensesOverAssets 1.87%
Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 $ 290
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 735
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 1,307
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 2,862
Expense Example, No Redemption, 1 Year rr_ExpenseExampleNoRedemptionYear01 190
Expense Example, No Redemption, 3 Years rr_ExpenseExampleNoRedemptionYear03 735
Expense Example, No Redemption, 5 Years rr_ExpenseExampleNoRedemptionYear05 1,307
Expense Example, No Redemption, 10 Years rr_ExpenseExampleNoRedemptionYear10 $ 2,862
1 Year rr_AverageAnnualReturnYear01 (2.04%)
Since Inception rr_AverageAnnualReturnSinceInception 3.12%
Inception Date of Class rr_AverageAnnualReturnInceptionDate Oct. 29, 2018
(American Beacon TwentyFour Strategic Income Fund℠) | Class Y  
Prospectus: rr_ProspectusTable  
Maximum sales charge imposed on purchases (as a percentage of offering price) rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice none
Maximum deferred sales charge (as a percentage of the lower of original offering price or redemption proceeds) rr_MaximumDeferredSalesChargeOverOther none
Management Fee rr_ManagementFeesOverAssets 0.67%
Distribution and/or Services (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets none
Other Expenses rr_OtherExpensesOverAssets 0.75%
Total Annual Fund Operating Expenses rr_ExpensesOverAssets 1.42%
Fee Waiver and/or expense reimbursement rr_FeeWaiverOrReimbursementOverAssets (0.60%) [12]
Total Annual Fund Operating Expenses after fee waiver and/or expense reimbursement rr_NetExpensesOverAssets 0.82%
Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 $ 84
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 390
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 719
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 $ 1,650
1 Year rr_AverageAnnualReturnYear01 (0.92%)
Since Inception rr_AverageAnnualReturnSinceInception 3.18%
Inception Date of Class rr_AverageAnnualReturnInceptionDate Apr. 03, 2017
(American Beacon TwentyFour Strategic Income Fund℠) | Institutional Class  
Prospectus: rr_ProspectusTable  
Maximum sales charge imposed on purchases (as a percentage of offering price) rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice none
Maximum deferred sales charge (as a percentage of the lower of original offering price or redemption proceeds) rr_MaximumDeferredSalesChargeOverOther none
Management Fee rr_ManagementFeesOverAssets 0.67%
Distribution and/or Services (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets none
Other Expenses rr_OtherExpensesOverAssets 0.55%
Total Annual Fund Operating Expenses rr_ExpensesOverAssets 1.22%
Fee Waiver and/or expense reimbursement rr_FeeWaiverOrReimbursementOverAssets (0.50%) [12]
Total Annual Fund Operating Expenses after fee waiver and/or expense reimbursement rr_NetExpensesOverAssets 0.72%
Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 $ 74
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 338
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 622
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 $ 1,433
1 Year rr_AverageAnnualReturnYear01 (0.82%)
Since Inception rr_AverageAnnualReturnSinceInception 3.29%
Inception Date of Class rr_AverageAnnualReturnInceptionDate Apr. 03, 2017
(American Beacon TwentyFour Strategic Income Fund℠) | Investor Class  
Prospectus: rr_ProspectusTable  
Maximum sales charge imposed on purchases (as a percentage of offering price) rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice none
Maximum deferred sales charge (as a percentage of the lower of original offering price or redemption proceeds) rr_MaximumDeferredSalesChargeOverOther none
Management Fee rr_ManagementFeesOverAssets 0.67%
Distribution and/or Services (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets none
Other Expenses rr_OtherExpensesOverAssets 1.02%
Total Annual Fund Operating Expenses rr_ExpensesOverAssets 1.69%
Fee Waiver and/or expense reimbursement rr_FeeWaiverOrReimbursementOverAssets (0.60%) [12]
Total Annual Fund Operating Expenses after fee waiver and/or expense reimbursement rr_NetExpensesOverAssets 1.09%
Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 $ 111
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 474
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 861
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 $ 1,948
Annual Return 2018 rr_AnnualReturn2018 (1.26%)
Year to Date Return, Label rr_YearToDateReturnLabel The calendar year-to-date total return as of September 30, 2019 was 9.56%
Bar Chart, Year to Date Return rr_BarChartYearToDateReturn 9.56%
Bar Chart, Year to Date Return, Date rr_BarChartYearToDateReturnDate Sep. 30, 2019
Highest Quarterly Return, Label rr_HighestQuarterlyReturnLabel Highest Quarterly Return: 1.41% 3rd Quarter 2018 01/01/2018 through 12/31/2018
Highest Quarterly Return rr_BarChartHighestQuarterlyReturn 1.41%
Highest Quarterly Return, Date rr_BarChartHighestQuarterlyReturnDate Sep. 30, 2018
Lowest Quarterly Return, Label rr_LowestQuarterlyReturnLabel Lowest Quarterly Return: -1.95% 4th Quarter 2018 01/01/2018 through 12/31/2018
Lowest Quarterly Return rr_BarChartLowestQuarterlyReturn (1.95%)
Lowest Quarterly Return, Date rr_BarChartLowestQuarterlyReturnDate Dec. 31, 2018
1 Year rr_AverageAnnualReturnYear01 (1.26%)
Since Inception rr_AverageAnnualReturnSinceInception 2.86%
Inception Date of Class rr_AverageAnnualReturnInceptionDate Apr. 03, 2017
(American Beacon TwentyFour Strategic Income Fund℠) | Investor Class | Returns After Taxes on Distributions  
Prospectus: rr_ProspectusTable  
1 Year rr_AverageAnnualReturnYear01 (3.55%)
Since Inception rr_AverageAnnualReturnSinceInception 0.92%
Inception Date of Class rr_AverageAnnualReturnInceptionDate Apr. 03, 2017
(American Beacon TwentyFour Strategic Income Fund℠) | Investor Class | Returns After Taxes on Distributions and Sales of Fund Shares  
Prospectus: rr_ProspectusTable  
1 Year rr_AverageAnnualReturnYear01 (0.73%)
Since Inception rr_AverageAnnualReturnSinceInception 1.37%
Inception Date of Class rr_AverageAnnualReturnInceptionDate Apr. 03, 2017
(American Beacon TwentyFour Strategic Income Fund℠) | Ultra Class  
Prospectus: rr_ProspectusTable  
Maximum sales charge imposed on purchases (as a percentage of offering price) rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice none
Maximum deferred sales charge (as a percentage of the lower of original offering price or redemption proceeds) rr_MaximumDeferredSalesChargeOverOther none
Management Fee rr_ManagementFeesOverAssets 0.67%
Distribution and/or Services (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets none
Other Expenses rr_OtherExpensesOverAssets 0.65%
Total Annual Fund Operating Expenses rr_ExpensesOverAssets 1.32%
Fee Waiver and/or expense reimbursement rr_FeeWaiverOrReimbursementOverAssets (0.65%) [12]
Total Annual Fund Operating Expenses after fee waiver and/or expense reimbursement rr_NetExpensesOverAssets 0.67%
Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 $ 68
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 353
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 660
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 $ 1,532
1 Year rr_AverageAnnualReturnYear01 (0.82%)
Since Inception rr_AverageAnnualReturnSinceInception 3.29%
Inception Date of Class rr_AverageAnnualReturnInceptionDate Apr. 03, 2017
(American Beacon SSI Alternative Income Fund℠)  
Prospectus: rr_ProspectusTable  
Objective [Heading] rr_ObjectiveHeading Investment Objectives
Objective, Primary [Text Block] rr_ObjectivePrimaryTextBlock
The Fund's investment objectives are to seek income and, secondarily, absolute returns.
Expense [Heading] rr_ExpenseHeading Fees and Expenses of the Fund
Expense Narrative [Text Block] rr_ExpenseNarrativeTextBlock
This table describes the fees and expenses that you may pay if you buy and hold shares of the Fund. More information is available from your financial professional and in "Choosing Your Share Class" on page 23 of the Prospectus. Although the Fund does not impose any sales charge on Y Class shares, you may pay a commission to your broker on your purchases and sales of those shares, which is not reflected in the tables or Example below.
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 October 28, 2021
Other Expenses, New Fund, Based on Estimates [Text] rr_OtherExpensesNewFundBasedOnEstimates Other Expenses and Acquired Fund Fees and Expenses are based on estimated expenses for the current fiscal year.
Expenses Not Correlated to Ratio Due to Acquired Fund Fees [Text] rr_ExpensesNotCorrelatedToRatioDueToAcquiredFundFees The Total Annual Fund Operating Expenses do not correlate to the ratio of expenses to average net assets provided in the Fund's Financial Highlights table, which reflects the operating expenses of the Fund and does not include Acquired Fund Fees and Expenses.
Expense Example [Heading] rr_ExpenseExampleHeading Example
Expense Example Narrative [Text Block] rr_ExpenseExampleNarrativeTextBlock
This Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return each year and that the Fund's operating expenses remain the same, except that the Example reflects the fee waiver/expense reimbursement arrangement for each share class through October 28, 2021. 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. For the period from April 1, 2019 to June 30, 2019 (which includes the portfolio turnover rate of the Fund's predecessor for part of the period), the Fund's portfolio turnover rate was 20% of the average value of its portfolio. The Fund's portfolio turnover rate for the Fund for the fiscal year ended March 31, 2019 (which is the portfolio turnover rate of the Fund's predecessor) was 76% of the average value of its portfolio.
Portfolio Turnover, Rate rr_PortfolioTurnoverRate 76.00%
Strategy [Heading] rr_StrategyHeading Principal Investment Strategies
Strategy Narrative [Text Block] rr_StrategyNarrativeTextBlock
The Fund seeks primarily to invest in convertible securities and to establish short positions in the common stock of the issuers of the convertible securities. The short positions are intended to reduce the Fund's exposure to decreases in the price of the related common stock. The Fund seeks to hedge its long positions in this way on a security-by-security basis. The term "convertible security" refers to a bond or a preferred stock (including a trust preferred security) that can be converted into shares of a company's common stock. The Fund's strategy in this regard is managed on a day-to-day basis by SSI Investment Management LLC, the sub-advisor to the Fund.
Pursuant to its strategy, the Fund seeks returns that exceed prevailing short-term interest rates, such as the return on 90-day U.S. Treasury bills, from four primary sources: 1) net dividend income on equity and convertible securities positions; 2) interest income on convertible securities positions; 3) interest rebates on short positions; and 4) net capital gains from trading profits.
In combining long positions in convertible securities with short positions in common stock of the issuers of those securities, the Fund seeks to maintain a "hedged convertible" investment portfolio with income and returns which are generally less volatile than and have low correlation with the broader capital markets, short-term interest rates and capital markets indices (absolute returns).
The Fund generally invests in convertible securities that are part of an issuance of at least $40 million in size and are issued by companies with market capitalizations between $500 million and $10 billion. The convertible securities are typically callable by the issuer and are not limited as to duration or maturity. The issuers of the convertible securities in which the Fund will invest may include U.S. or non-U.S. companies, real estate investment trusts ("REITs"), and emerging-market companies. The instruments may be denominated in foreign, or non-U.S., currencies; however, such exposures are typically hedged back to the U.S. dollar. The Fund may hold investment-grade, below investment-grade (i.e., "high yield" or "junk" bonds) and unrated securities that are deemed by the sub-advisor to be of equivalent quality. The Fund's holdings may include variable-rate coupon, zero-coupon and pay-in-kind ("PIK") instruments and restricted securities, such as those issued under Rule 144A of the Securities Act of 1933. To a lesser extent, the Fund may utilize securities issued by business development companies and may invest long or short in exchange-traded funds ("ETFs") to adjust or hedge exposures. The Fund may have significant exposure to the Financial sector. However, as the sector composition of the Fund's portfolio changes over time, the Fund's exposure to the Financial sector may be lower at a future date, and the Fund's exposure to other market sectors may be higher.
The Fund may also invest in long or short positions in derivative instruments, such as futures, forwards, swaps, options and warrants, to hedge exposures in the Fund. Futures contracts generally include those based on U.S. treasuries, forward contracts are generally forward currency contracts (including non-deliverable forwards), swaps generally include interest rate and credit default swaps, options generally include call and put options, and warrants are generally similar to long-dated call options. On a short-term basis, the Fund may invest cash balances in other investment companies, including money market funds that are advised by the Manager.
The sub-advisor seeks to identify convertible securities that it believes are undervalued by assessing, among other attributes, the quality, income, liquidity and "equity sensitivity" of the security (i.e., the sensitivity of a convertible security's price to changes in the price of the issuer's common stock). The sub-advisor also considers the availability of the common stock that it intends to short.
After acquiring a convertible security, the Fund establishes a short position in the common stock, American Depositary Receipt ("ADR"), call option or other equity-related instrument of the same issuer. The size of each short position is based on the sensitivity of the convertible security's price to changes in the price of the issuer's common stock. As a result, the Fund's short positions will generally be smaller on a dollar value basis than its long positions since a convertible security's price is typically less sensitive than that of the common stock. The sub-advisor considers selling a convertible security and closing the related short position when it determines the convertible security is no longer undervalued, when it determines that convertible securities overall are no longer undervalued, when it anticipates a potentially unfavorable change in the structure of a convertible security or the underlying company or to satisfy shareholder redemptions, among other reasons.
Risk [Heading] rr_RiskHeading Principal Risks
Risk Narrative [Text Block] rr_RiskNarrativeTextBlock
There is no assurance that the Fund will achieve its investment objectives and you could lose part or all of your investment in the Fund. The Fund is not designed for investors who need an assured level of current income and is intended to be a long-term investment. The Fund is not a complete investment program and may not be appropriate for all investors. Investors should carefully consider their own investment goals and risk tolerance before investing in the Fund. The principal risks of investing in the Fund listed below are presented in alphabetical order, and not in order of importance or potential exposure, to facilitate your ability to find particular risks and compare them with the risks of other funds. Each risk summarized below is considered a "principal risk" of investing in the Fund, regardless of the order in which it appears.
Allocation Risk
The sub-advisor's judgments about, and allocations among, strategies, asset classes and market exposures may adversely affect the Fund's performance. There can be no assurance, particularly during periods of market disruption and stress, that the sub-advisor's judgements about asset allocation will be correct. This risk may be increased by the use of derivatives to increase allocations to various market exposures.
Callable Securities Risk
The Fund may invest in fixed-income securities with call features. A call feature allows the issuer of the security to redeem or call the security prior to its stated maturity date. In periods of falling interest rates, issuers may be more likely to call in securities that are paying higher coupon rates than prevailing interest rates. In the event of a call, the Fund would lose the income that would have been earned to maturity on that security, and the proceeds received by the Fund may be invested in securities paying lower coupon rates and may not benefit from any increase in value that might otherwise result from declining interest rates.
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 risks of stocks when the underlying stock's price is high relative to the conversion price and is subject to the 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. In addition, to the extent the Fund invests in convertible securities issued by small- or mid-cap companies, it will be subject to the risks of investing in such companies. The stocks of small- and mid-cap companies may fluctuate more widely in price than the market as a whole and there may also be less trading in small- or mid-cap stocks. Convertible securities are sensitive to movement in interest rates.
Counterparty Risk
The Fund is subject to the risk that a party or participant to a transaction, such as a broker or derivative counterparty, will be unwilling or unable to satisfy its obligation to make timely principal, interest or settlement payments or to otherwise honor its obligations to the Fund.
Credit Risk
The Fund is subject to the risk that the issuer or guarantor of an obligation, or the counterparty to a transaction, including a derivatives contract or a loan, may fail, or become less able, to make timely payment of interest or principal or otherwise honor its obligations or default completely. Credit risk is typically greater for securities with ratings that are below investment grade (commonly referred to as "junk bonds"). Since the Fund can invest significantly in high yield investments that are considered speculative in nature, this risk may be substantial. Changes in the actual or perceived creditworthiness of an issuer, or a downgrade or default affecting any of the Fund's securities, could affect the Fund's performance.
Currency Risk
The Fund may have exposure to foreign currencies by using various instruments described below. Foreign currencies may fluctuate significantly over short periods of time, may be affected unpredictably by intervention, or the failure to intervene, of the U.S. or foreign governments or central banks, and may be affected by currency controls or political developments in the U.S. or abroad. Foreign currencies may also decline in value relative to the U.S. dollar and other currencies and thereby affect the Fund's investments in non-U.S. currencies or in securities that trade in, and receive revenues in, or in derivatives that provide exposure to, non-U.S. currencies. The Fund may gain exposure to foreign currencies because of its investments in one or more of the following:
  • Non-U.S. currencies
  • Securities denominated in non-U.S. currencies
  • Foreign currency forward contracts, including non-deliverable forwards ("NDFs"), which are described below under "Derivatives Risk"
  • Non-U.S. currency futures contracts, which are described below under "Derivatives Risk"
Cybersecurity and Operational Risk
The Fund and its service providers, and shareholders' ability to transact with the Fund, may be negatively impacted due to operational risks arising from, among other problems: human errors, systems and technology disruptions or failures, or cybersecurity incidents. Cybersecurity incidents may allow an unauthorized party to gain access to Fund assets, customer data, or proprietary information, or cause the Fund or its service providers, as well as the securities trading venues and their service providers, to suffer data corruption or lose operational functionality. 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. 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.
Derivatives Risk
Derivatives may involve significant risk. The use of derivative instruments may expose the Fund to additional risks that it would not be subject to if it invested directly in the securities or other instruments underlying those derivatives, including the high degree of leverage often embedded in such instruments, and potential material and prolonged deviations between the theoretical value and realizable value of a derivative. Some derivatives have the potential for unlimited loss, regardless of the size of the Fund's initial investment. Derivatives may at times be illiquid, and the Fund may not be able to close out or sell a derivative at a particular time or at an anticipated price. Certain derivatives may be difficult to value, and valuation may be more difficult in times of market turmoil. Derivatives may also be more volatile than other types of investments. The Fund may buy or sell derivatives not traded on an exchange, which may be subject to heightened liquidity and valuation risk. Derivative investments can increase portfolio turnover and transaction costs. Derivatives also are subject to counterparty risk and credit risk. As a result, the Fund may not recover its investment or may only obtain a limited recovery, and any recovery may be delayed. Not all derivative transactions require a counterparty to post collateral, which may expose the Fund to greater losses in the event of a default by a counterparty. Ongoing changes to the regulation of the derivatives markets and potential changes in the regulation of funds using derivative instruments could limit the Fund's ability to pursue its investment strategies. New regulation of derivatives may make them more costly, or may otherwise adversely affect their liquidity, value or performance. In addition, the Fund's investments in derivatives are subject to the following risks:
  • Futures and Forward Contracts Risk. Futures and forward contracts, including NDFs, are derivative instruments pursuant to a contract where the parties agree to a fixed price for an agreed amount of securities or other underlying assets at an agreed date or to buy or sell a specific currency at a future date at a price set at the time of the contract. There may at times be an imperfect correlation between the movement in the prices of futures contracts and the value of their underlying instruments or indexes. There are no limitations on daily price movements of forward contracts. There can be no assurance that any strategy used will succeed. Not all forward contracts, including NDFs, require a counterparty to post collateral, which may expose the Fund to greater losses in the event of a default by a counterparty. There can be no assurance that, at all times, a liquid market will exist for offsetting a futures contract that the Fund has previously bought or sold and this may result in the inability to close a futures contract when desired. Forward currency transactions, including NDFs, and forward currency contracts include the risks associated with fluctuations in currency. Treasury futures contracts expose the Fund to price fluctuations resulting from changes in interest rates. Similarly, Treasury futures contracts expose the Fund to potential losses if interest rates do not move as expected.
  • Options Risk. In order for a call option to be profitable, the market price of the underlying security or index must rise sufficiently above the call option exercise price to cover the premium and any transaction costs. These costs will reduce any profit that might otherwise have been realized had the Fund bought the underlying security instead of the call option. For a put option to be profitable, the market price of the underlying security or index must decline sufficiently below the put option's exercise price to cover the premium and any transaction costs. By using put options in this manner, the Fund will reduce any profit it might otherwise have realized from having shorted the declining underlying security by the premium paid for the put option and by transaction costs. If an option that the Fund has purchased expires unexercised, the Fund will experience a loss in the amount of the premium it paid. If the Fund sells a put option, there is a risk that the Fund may be required to buy the underlying asset at a disadvantageous price. If the Fund sells a call option, there is a risk that the Fund may be required to sell the underlying asset at a disadvantageous price. If the Fund sells a call option on an underlying asset that the Fund owns, and the underlying asset has increased in value when the call option is exercised, the Fund will be required to sell the underlying asset at the call price and will not be able to realize any of the underlying asset's value above the call price. If a call option that the Fund has sold is unexercised, the Fund will experience a gain or loss from the sale of the underlying instrument. If a call option that the Fund has sold is unexercised, the Fund will experience a gain or loss from the sale of the underlying instrument. There can be no guarantee that the use of options will increase the Fund's return or income. In addition, there may be an imperfect correlation between the movement in prices of options and the securities underlying them, and there may at times not be a liquid secondary market for options.
  • Swap Agreements Risk. Swaps can involve greater risks than a direct investment in an underlying asset, because swaps typically include a certain amount of embedded leverage and as such are subject to leverage risk. If swaps are used as a hedging strategy, the Fund is subject to the risk that the hedging strategy may not eliminate the risk that it is intended to offset, due to, among other reasons, the occurrence of unexpected price movements or the non-occurrence of expected price movements. Swaps also may be difficult to value. Swaps may be subject to liquidity risk and counterparty risk, and swaps that are traded over-the-counter are not subject to standardized clearing requirements and may involve greater liquidity and counterparty risks. In addition, the Fund may invest in the following types of swaps:
Credit default swaps, which may be subject to credit risk and the risks associated with the purchase and sale of credit protection.
Interest rate swaps, which may be subject to interest rate risk and credit risk.
  • Warrants Risk. Warrants may be more speculative than certain other types of investments because warrants do not carry with them dividend or voting rights with respect to the underlying securities, or any rights in the assets of the issuer. In addition, the value of a warrant does not necessarily change with the value of the underlying securities, and a warrant ceases to have value if it is not exercised prior to its expiration date. The market for warrants may be very limited and there may at times not be a liquid secondary market for warrants.
Emerging Markets Risk
When investing in emerging markets, the risks of investing in foreign securities, as discussed below, are heightened. Emerging markets are generally smaller, less developed, less liquid and more volatile than the securities markets of the U.S. and other developed markets. There are also risks of: greater political uncertainties; an economy's dependence on revenues from particular commodities or on international aid or development assistance; currency transfer restrictions; a limited number of potential buyers for such securities resulting in increased volatility and limited liquidity for emerging market securities; trading suspensions; and delays and disruptions in securities settlement procedures. 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 and financial reporting standards and requirements comparable to those to which U.S. companies are subject.
Equity Investments Risk
Equity securities are subject to investment risk and market risk. The Fund may invest in the following equity securities, which may expose the Fund to the following additional risks:
  • Common Stock Risk. The value of a company's common stock may fall as a result of factors affecting the company, companies in the same industry or sector, or the financial markets overall. Common stock generally is subordinate to preferred stock upon the liquidation or bankruptcy of the issuing company.
  • Depositary Receipts and U.S. Dollar-Denominated Foreign Stocks Traded on U.S. Exchanges Risk. Depositary receipts and U.S. dollar-denominated foreign stocks traded on U.S. exchanges are subject to certain of the risks associated with investing directly in foreign securities, including, but not limited to, currency exchange rate fluctuations, political and financial instability in the home country of a particular depositary receipt or foreign stock, less liquidity and more volatility, less government regulation and supervision and delays in transaction settlement.
  • Preferred Stock Risk. Preferred stocks are sensitive to movements in interest rates. Preferred stocks may be less liquid than common stocks and, unlike common stocks, participation in the growth of an issuer may be limited. Distributions on preferred stocks generally are payable at the discretion of an issuer and after required payments to bond holders. In certain situations, an issuer may call or redeem its preferred stock or convert it to common stock. The market prices of preferred stocks are generally more sensitive to actual or perceived changes in the issuer's financial condition or prospects than are the prices of debt securities.
  • Real Estate Investment Trusts ("REITs") Risk. Investments in REITs are subject to the risks associated with investing in the real estate industry, including, among other risks: adverse developments affecting the real estate industry; declines in real property values; changes in interest rates; defaults by mortgagors or other borrowers and tenants; lack of availability of mortgage funds or financing; extended vacancies of properties, especially during economic downturns; casualty or condemnation losses; and governmental actions, such as changes to tax laws, zoning regulations or environmental regulations. REITs also are dependent upon the skills of their managers and are subject to heavy cash flow dependency or self-liquidation. Domestic REITs could be adversely affected by failure to qualify for tax-free "pass-through" of distributed net income and net realized gains under the Internal Revenue Code of 1986, as amended ("Internal Revenue Code"), or to maintain their exemption from registration under the Investment Company Act of 1940, as amended ("Investment Company Act"). REITs typically incur fees that are separate from those incurred by the Fund. Accordingly, the Fund's investment in REITs will result in the layering of expenses such that shareholders will indirectly bear a proportionate share of the REITs' operating expenses, in addition to paying Fund expenses. The value of REIT common stock may decline when interest rates rise.
Foreign Investing Risk
Non-U.S. investments carry potential risks not associated with U.S. investments. Such risks include, but are not limited to: (1) currency exchange rate fluctuations, (2) political and financial instability, (3) less liquidity, (4) lack of uniform accounting, auditing and financial reporting standards, (5) increased volatility, (6) different government regulation and supervision of foreign stock exchanges, brokers and listed companies, and (7) delays in transaction settlement in some foreign markets.
Hedging Risk
If the Fund uses a hedging instrument at the wrong time or judges the market conditions incorrectly, or the hedged instrument does not correlate to the risk sought to be hedged, the hedge might be unsuccessful, reduce the Fund's return, or create a loss. In addition, hedges, even when successful in mitigating risk, may not prevent the Fund from experiencing losses on its investments. Hedging instruments may also reduce or eliminate gains that may otherwise have been available had the Fund not used the hedging instruments.
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.
Illiquid and Restricted Securities Risk
Securities not registered in the U.S. under the Securities Act of 1933, as amended (the "Securities Act") or in non-U.S. markets pursuant to similar regulations, including Rule 144A securities, are restricted as to their resale. Such securities may not be listed on an exchange and may have no active trading market. The prices of these securities may be more difficult to determine than publicly traded securities and these securities may involve heightened risk as compared to investments in securities of publicly traded companies. They may be more difficult to purchase or sell at an advantageous time or price because such securities may not be readily marketable in broad public markets, or may have to be held for a certain time period before they can be resold. The Fund may not be able to sell a restricted security when the sub-advisor considers it desirable to do so and/or may have to sell the security at a lower price than the Fund believes is its fair market value. In addition, transaction costs may be higher for restricted securities and the Fund may receive only limited information regarding the issuer of a restricted security. The Fund may have to bear the expense of registering restricted securities for resale and the risk of substantial delays in effecting the registration.
Interest Rate Risk
The Fund is subject to the risk that the market value of fixed income securities or derivatives it holds will decline due to rising interest rates. Generally, the value of investments with interest rate risk, such as fixed income securities, will move in the opposite direction to movements in interest rates. The Federal Reserve has raised the federal funds rate several times since December 2015 and may increase or decrease rates in the future. Interest rates may rise, perhaps significantly and/or rapidly, potentially resulting in substantial losses to the Fund. The prices of fixed income securities or derivatives are also affected by their durations. Fixed income securities or derivatives with longer durations generally have greater sensitivity to changes in interest rates. For example, if a bond has a duration of four years, a 1% increase in interest rates could be expected to result in a 4% decrease in the value of the bond. An increase in interest rates can impact markets broadly as well. Some investors buy securities and derivatives with borrowed money; an increase in interest rates can cause a decline in those markets. To the extent the Fund holds an investment with a negative interest rate to maturity, the Fund would generate a negative return on that investment.
Investment Risk
An investment in the Fund is not a deposit with a bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency. When you sell your shares of the Fund, they could be worth less than what you paid for them. Therefore, you may lose money by investing in the Fund.
Issuer Risk
The value of, and/or the return generated by, a security may decline for a number of reasons 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.
Large Capitalization Companies Risk
The securities of large market capitalization companies may underperform other segments of the market because such companies may be less responsive to competitive challenges and opportunities. Many larger capitalization companies also may be unable to attain the high growth rates of successful smaller companies, especially during periods of economic expansion.
Leverage Risk
The Fund's use of derivative instruments and selling securities short will have the economic effect of financial leverage. Financial leverage magnifies the exposure to the swings in prices of an asset or class of assets underlying a derivative instrument and may result in increased volatility, which means that the Fund will have the potential for greater losses than if the Fund does not use the derivative instruments that have a leveraging effect. Leverage may result in losses that exceed the amount originally invested and may accelerate the rate of losses. Leverage tends to magnify, sometimes significantly, the effect of any increase or decrease in the Fund's exposure to an asset or class of assets and may cause the Fund's net asset value ("NAV") per share to be volatile. There can be no assurance that the Fund's use of leverage will be successful.
LIBOR Risk
The Fund's investments, payment obligations and financing terms may be based on floating rates, such as London Interbank Offer Rate ("LIBOR"), Euro Interbank Offered Rate and other similar types of reference rates (each, a "Reference Rate"). On July 27, 2017, the Chief Executive of the UK Financial Conduct Authority ("FCA"), which regulates LIBOR, announced that the FCA will no longer persuade nor require banks to submit rates for the calculation of LIBOR and certain other Reference Rates after 2021. Such announcement indicates that the continuation of LIBOR and other Reference Rates on the current basis cannot and will not be guaranteed after 2021. This announcement and any additional regulatory or market changes may have an adverse impact on the Fund or its investments, including increased volatility or illiquidity in markets for instruments that rely on LIBOR.
In advance of 2021, regulators and market participants are working together to identify or develop successor Reference Rates. Additionally, prior to 2021, it is expected that market participants will focus on the transition mechanisms by which the Reference Rates in existing contracts or instruments may be amended, whether through marketwide protocols, fallback contractual provisions, bespoke negotiations or amendments or otherwise. Nonetheless, the termination of certain Reference Rates presents risks to the Fund. At this time, it is not possible to completely identify or predict the effect of any such changes, any establishment of alternative Reference Rates or any other reforms to Reference Rates that may be enacted in the UK or elsewhere. The elimination of a Reference Rate or any other changes or reforms to the determination or supervision of Reference Rates could have an adverse impact on the market for or value of any securities or payments linked to those Reference Rates and other financial obligations held by the Fund or on its overall financial condition or results of operations. In addition, any substitute Reference Rate and any pricing adjustments imposed by a regulator or by counterparties or otherwise may adversely affect the Fund's performance and/or NAV.
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. 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 due to higher than normal redemption rates. Unexpected redemptions may force the Fund to sell certain investments at unfavorable prices to meet redemption requests or other cash needs. Judgment plays a greater role in pricing illiquid investments than in investments with more active markets.
Market Risk
In recent periods, fixed income instruments have experienced unusual liquidity issues, increased price volatility and, in some cases, credit downgrades and increased likelihood of default. These events have reduced the willingness and ability of some lenders to extend credit, and have made it more difficult for some borrowers to obtain financing on attractive terms, if at all. In addition, global economies and financial markets are becoming increasingly interconnected, which increases the possibilities that conditions in one country or region might adversely impact issuers in a different country or region. A rise in protectionist trade policies, risks associated with the United Kingdom's vote to leave the European Union, the risk of a trade dispute between the United States and China, and the possibility of changes to some international trade agreements, could affect the economies of many nations, including the United States, in ways that cannot necessarily be foreseen at the present time. The severity or duration of adverse economic conditions may also be affected by policy changes made by governments or quasi-governmental organizations. In addition, political and governmental events within the U.S. and abroad may affect investor and consumer confidence and may adversely impact financial markets and the broader economy, perhaps suddenly and to a significant degree. High public debt in the U.S. and other countries creates ongoing systemic and market risks and policymaking uncertainty. Because the impact on the markets has been widespread, it may be difficult to identify both risks and opportunities using past models of the interplay of market forces, or to predict the duration of these market conditions. Interest rates have been unusually low in recent years in the U.S. and abroad. Because there is little precedent for this situation, it is difficult to predict the impact on various markets of a significant rate increase, whether brought about by U.S. policy makers or by dislocations in world markets. In addition, there is a risk that the prices of goods and services in the U.S. and many foreign economies may decline over time, known as deflation (the opposite of inflation). Deflation may have an adverse effect on stock prices and creditworthiness and may make defaults on debt more likely.
Market Timing Risk
The Fund is subject to the risk of market timing activities by investors due to the Fund's investments in foreign securities, or its exposure to foreign securities through the derivatives it holds. Frequent trading by Fund shareholders poses risks to other shareholders in the Fund, including (i) the dilution of the Fund's net asset value ("NAV"), (ii) an increase in the Fund's expenses, and (iii) interference with the portfolio manager's ability to execute efficient investment strategies.
Mid-Capitalization Companies Risk
Investing in the securities of mid-capitalization companies involves greater risk and the possibility of greater price volatility than investing in larger capitalization and more established companies. Since mid-capitalization companies may have narrower commercial markets and more limited operating history, product lines, and managerial and financial resources than larger, more established companies, the securities of these companies may lack sufficient market liquidity, and they can be particularly sensitive to expected changes in interest rates, borrowing costs and earnings.
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. The Fund will be subject to the risks associated with investments in those companies, including but not limited to the following:
  • BDCs. The Fund's investments in business development companies ("BDCs") may be subject to certain additional risks, including competition for limited investment opportunities, the liquidity of a BDC's investments, uncertainty as to the value of a BDC's investments, risks associated with access to capital and leverage, and reliance on the management of a BDC.
  • ETFs. To the extent the Fund invests in exchange-traded funds ("ETFs") that invest in equity securities, fixed income securities and/or foreign securities, or track an index, the Fund is subject to the risks associated with the underlying investments held by the ETF or the index fluctuations to which the ETF is subject. Because ETFs are listed on an exchange, they may be subject to trading halts, may trade at a premium or discount to their net asset value ("NAV") and may not be liquid. An ETF that tracks an index may not precisely replicate the returns of its benchmark index.
  • Money Market Funds. Investments in money market funds are subject to interest rate risk, credit risk, and market risk.
Pay-In-Kind Securities Risk
Pay-in-kind securities are debt securities that do not make regular cash interest payments. Pay-in-kind securities pay interest through the issuance of additional securities. Because these securities do not pay current cash income, their prices can be volatile when interest rates fluctuate. If an issuer of pay-in-kind securities defaults, the Fund may lose its entire investment. In order to continue to qualify for treatment as a "regulated investment company" under the Internal Revenue Code and avoid federal excise tax, the Fund may be required to distribute a portion of such non-cash income and may be required to dispose of other portfolio securities (which may occur in periods of adverse market prices) in order to generate cash to meet these distribution requirements.
Redemption Risk
The Fund may experience periods of high levels of redemptions that could cause the Fund to sell assets at inopportune times or at a loss or depressed value. The sale of assets to meet redemption requests may create net capital gains, which could cause the Fund to have to distribute substantial capital gains. Redemption risk is heightened during periods of declining or illiquid markets. Additionally, during periods of heavy redemptions, the Fund may borrow funds through the Fund's interfund credit facility, which may increase costs and heighten the Fund's redemption risk. A rise in interest rates or other market developments may cause investors to move out of fixed income securities on a large scale. Heavy redemptions could hurt the Fund's performance.
Sector Risk
When the Fund focuses its investments in certain sectors of the economy, its performance may be driven largely by sector performance and could fluctuate more widely than if the Fund were invested more evenly across sectors. 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.
  • Financial Sector Risk. Financial services companies are subject to extensive governmental regulation, which may limit both the amounts and types of loans and other financial commitments they can make, the interest rates and fees they can charge, the scope of their activities, the prices they can charge and the amount of capital they must maintain. Profitability is largely dependent on the availability and cost of capital funds and can fluctuate significantly when interest rates change or due to increased competition. In addition, deterioration of the credit markets generally may cause an adverse impact in a broad range of markets, including U.S. and international credit and interbank money markets generally, thereby affecting a wide range of financial institutions and markets. Certain events in the financial sector may cause an unusually high degree of volatility in the financial markets, both domestic and foreign, and cause certain financial services companies to incur large losses. Securities of financial services companies may experience a dramatic decline in value when such companies experience substantial declines in the valuations of their assets, take action to raise capital (such as the issuance of debt or equity securities), or cease operations.
Securities Selection Risk Securities selected by the sub-advisor for the Fund may not perform to expectations. It may not be possible to predict or to hedge against a widening in the yield spread of the securities selected by the sub-advisor. This could result in the Fund's underperformance compared to its benchmark index(es), or other funds with similar investment objectives or strategies.
Segregated Assets Risk
In connection with certain transactions that may give rise to future payment obligations, the Fund may be required to maintain a segregated amount of, or otherwise earmark, cash or liquid securities to cover the obligation. Segregated assets generally cannot be sold while the position they are covering is outstanding, unless they are replaced with other assets of equal value. The need to maintain cash or other liquid securities in segregated accounts could limit the Fund's ability to pursue other opportunities as they arise.
Short Position Risk
The Fund will incur a loss as a result of a short position if the price of the instrument sold short increases in value between the date of the short sale and the date on which an offsetting position is purchased. Short positions may be considered speculative transactions and involve special risks, including greater reliance on the sub-advisor's ability to accurately anticipate the future value of a security or instrument. The Fund's losses are potentially unlimited in a short position transaction because there is potentially no limit on the amount that the security that the Fund is required to purchase may have appreciated. Because the Fund may invest the proceeds of a short sale, another effect of short selling on the Fund is similar to the effect of leverage, in that short selling may amplify changes in the Fund's NAV since it may increase the exposure of the Fund to certain markets and may increase losses and the volatility of returns.
Small Capitalization Companies Risk
Investing in the securities of small-capitalization companies involves greater risk and the possibility of greater price volatility than investing in larger capitalization and more established companies. Since small-capitalization companies may have narrower commercial markets, and more limited operating history, product lines, and managerial and financial resources than larger, more established companies, the securities of these companies may lack sufficient market liquidity and they can be particularly sensitive to expected changes in interest rates, borrowing costs and earnings.
Trust Preferred Securities Risk
Trust preferred securities are subject to market risk, interest rate risk and credit risk. Holders of the trust preferred securities have limited voting rights to control the activities of the trust and no voting rights with respect to the parent company. Trust preferred securities prices fluctuate for several reasons, including changes in the financial condition of an issuer, investors' perception of the financial condition of an issuer, or the general economic condition of the market for trust preferred securities.
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.
Variable and Floating Rate Securities Risk
The coupons on variable and floating-rate securities are not fixed and may fluctuate based upon changes in market rates. The coupon on a floating rate security is generally based on an interest rate, such as a money-market index, the London Interbank Offered Rate ("LIBOR") or a Treasury bill rate. Variable and floating rate securities are subject to interest rate risk and credit risk. As short-term interest rates decline, the coupons on floating-rate securities typically decrease. Alternatively, during periods of rising interest rates, the coupons on floating-rate securities typically increase. Changes in the coupons of floating-rate securities may lag behind changes in market rates or may have limits on the maximum increases in the coupon rates. The value of floating-rate securities may decline if their coupons do not rise as much, or as quickly, as interest rates in general. Floating rate securities will not generally increase in value if interest rates decline. Certain types of floating rate instruments may be subject to greater liquidity risk than other debt securities.
Zero Coupon Securities Risk
Zero coupon securities are securities that do not make periodic interest payments. Accordingly, zero coupon securities usually trade at a deep discount from their face or par value and will be subject to greater fluctuations in market value in response to changing interest rates than debt obligations of comparable maturities that make current distribution of interest in cash.
Risk Lose Money [Text] rr_RiskLoseMoney There is no assurance that the Fund will achieve its investment objectives and you could lose part or all of your investment in the Fund.
Risk Not Insured Depository Institution [Text] rr_RiskNotInsuredDepositoryInstitution An investment in the Fund is not a deposit with a bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.
Bar Chart and Performance Table [Heading] rr_BarChartAndPerformanceTableHeading Fund Performance
Performance Narrative [Text Block] rr_PerformanceNarrativeTextBlock
The bar chart and table below provide an indication of risk by showing changes in the Fund's performance over time. The bar chart shows how the Fund's performance has varied from year to year. The table shows how the Fund's performance compares to a broad-based market index, which is the Fund's benchmark index, as well as the benchmark index of the Fund's predecessor.
The Fund acquired the assets and liabilities of the Palmer Square SSI Alternative Income Fund, a series of Investment Managers Series Trust, in a reorganization that closed on May 17, 2019. In connection with that reorganization, the Y Class shares and Investor Class shares of the Fund have adopted the performance history and financial statements of the Class I shares and Class A shares, respectively, of the Fund's predecessor. The bar chart and table below show the performance of the Fund's Y Class shares for all periods. The table below also shows the performance of the Fund's Investor Class shares for all periods (which differs from the performance of the Class A shares of the Fund's predecessor to the extent that the performance of the Class A shares reflected the deduction of applicable sales charges). The Institutional Class shares of the Fund began operations on May 20, 2019. Performance for the Institutional Class shares in the table below represents the returns achieved by the predecessor Fund's Class I shares from May 25, 2012 through December 31, 2018. The Institutional Class shares would have had similar annual returns to the Class I shares, because the shares are invested in the same portfolio securities. The Institutional Class performance shown in the table has not been adjusted for differences in operating expenses of the Institutional Class and the predecessor Fund's I Class shares.
You may obtain updated performance information on the Fund's website at www.americanbeaconfunds.com. Past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future.
Bar Chart [Heading] rr_BarChartHeading Calendar year total returns for Y Class Shares. Year Ended 12/31
Bar Chart Closing [Text Block] rr_BarChartClosingTextBlock
Highest Quarterly Return:
3.18% 2nd Quarter 2016
01/01/2013 through 12/31/2018
Lowest Quarterly Return:
-2.03% 3rd Quarter 2015
01/01/2013 through 12/31/2018
The calendar year-to-date total return as of September 30, 2019 was 5.52%
Performance Table Heading rr_PerformanceTableHeading Average annual total returns for periods ended December 31, 2018
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 Fund's Y Class shares; after-tax returns for other share classes will vary.
Performance Table Uses Highest Federal Rate rr_PerformanceTableUsesHighestFederalRate After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local income taxes.
Performance Table Not Relevant to Tax Deferred rr_PerformanceTableNotRelevantToTaxDeferred If you 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 Explanation after Tax Higher rr_PerformanceTableExplanationAfterTaxHigher The return after taxes on distributions and sale of Fund shares may exceed the return before taxes due to an assumed tax benefit from any losses on a sale of Fund shares at the end of the measurement period.
Performance Past Does Not Indicate Future [Text] rr_PerformancePastDoesNotIndicateFuture Past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future.
Performance Information Illustrates Variability of Returns [Text] rr_PerformanceInformationIllustratesVariabilityOfReturns The bar chart and table below provide an indication of risk by showing changes in the Fund's performance over time. The bar chart shows how the Fund's performance has varied from year to year. The table shows how the Fund's performance compares to a broad-based market index, which is the Fund's benchmark index, as well as the benchmark index of the Fund's predecessor.
Performance Table One Class of after Tax Shown [Text] rr_PerformanceTableOneClassOfAfterTaxShown After-tax returns are shown only for the Fund's Y Class shares; after-tax returns for other share classes will vary.
Performance Availability Website Address [Text] rr_PerformanceAvailabilityWebSiteAddress www.americanbeaconfunds.com
(American Beacon SSI Alternative Income Fund℠) | ICE BofAML 3-Month U.S. Treasury Bill Index (Reflects no deduction for fees, expenses or taxes)  
Prospectus: rr_ProspectusTable  
1 Year rr_AverageAnnualReturnYear01 1.87%
5 Years rr_AverageAnnualReturnYear05 0.63%
Since Inception rr_AverageAnnualReturnSinceInception 0.50%
Inception Date of Class rr_AverageAnnualReturnInceptionDate May 25, 2012
(American Beacon SSI Alternative Income Fund℠) | FTSE 3-Month T-Bill Index (Reflects no deduction for fees, expenses or taxes)  
Prospectus: rr_ProspectusTable  
1 Year rr_AverageAnnualReturnYear01 1.86% [13]
5 Years rr_AverageAnnualReturnYear05 0.60% [13]
Since Inception rr_AverageAnnualReturnSinceInception 0.47% [13]
Inception Date of Class rr_AverageAnnualReturnInceptionDate May 25, 2012
(American Beacon SSI Alternative Income Fund℠) | Class Y  
Prospectus: rr_ProspectusTable  
Maximum sales charge imposed on purchases (as a percentage of offering price) rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice none
Maximum deferred sales charge (as a percentage of the lower of original offering price or redemption proceeds) rr_MaximumDeferredSalesChargeOverOther none
Management Fee rr_ManagementFeesOverAssets 1.30%
Distribution and/or Services (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets none
Other Expenses rr_OtherExpensesOverAssets 0.84% [14]
Dividend Expenses on Securities Sold Short rr_Component1OtherExpensesOverAssets 0.15%
Remainder of Other Expenses rr_Component2OtherExpensesOverAssets 0.69%
Acquired Fund Fees and Expenses rr_AcquiredFundFeesAndExpensesOverAssets 0.01%
Total Annual Fund Operating Expenses rr_ExpensesOverAssets 2.15% [15]
Fee Waiver and/or expense reimbursement rr_FeeWaiverOrReimbursementOverAssets (0.43%) [16]
Total Annual Fund Operating Expenses after fee waiver and/or expense reimbursement rr_NetExpensesOverAssets 1.72%
Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 $ 175
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 588
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 1,073
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 $ 2,413
Annual Return 2013 rr_AnnualReturn2013 2.34%
Annual Return 2014 rr_AnnualReturn2014 (0.79%)
Annual Return 2015 rr_AnnualReturn2015 (2.39%)
Annual Return 2016 rr_AnnualReturn2016 5.68%
Annual Return 2017 rr_AnnualReturn2017 4.35%
Annual Return 2018 rr_AnnualReturn2018 0.57%
Year to Date Return, Label rr_YearToDateReturnLabel The calendar year-to-date total return as of September 30, 2019 was 5.52%
Bar Chart, Year to Date Return rr_BarChartYearToDateReturn 5.52%
Bar Chart, Year to Date Return, Date rr_BarChartYearToDateReturnDate Sep. 30, 2019
Highest Quarterly Return, Label rr_HighestQuarterlyReturnLabel Highest Quarterly Return: 3.18% 2nd Quarter 2016 01/01/2013 through 12/31/2018
Highest Quarterly Return rr_BarChartHighestQuarterlyReturn 3.18%
Highest Quarterly Return, Date rr_BarChartHighestQuarterlyReturnDate Jun. 30, 2016
Lowest Quarterly Return, Label rr_LowestQuarterlyReturnLabel Lowest Quarterly Return: -2.03% 3rd Quarter 2015 01/01/2013 through 12/31/2018
Lowest Quarterly Return rr_BarChartLowestQuarterlyReturn (2.03%)
Lowest Quarterly Return, Date rr_BarChartLowestQuarterlyReturnDate Sep. 30, 2015
1 Year rr_AverageAnnualReturnYear01 0.57%
5 Years rr_AverageAnnualReturnYear05 1.44%
Since Inception rr_AverageAnnualReturnSinceInception 1.81%
Inception Date of Class rr_AverageAnnualReturnInceptionDate May 25, 2012
(American Beacon SSI Alternative Income Fund℠) | Class Y | Returns After Taxes on Distributions  
Prospectus: rr_ProspectusTable  
1 Year rr_AverageAnnualReturnYear01 (0.09%)
5 Years rr_AverageAnnualReturnYear05 0.78%
Since Inception rr_AverageAnnualReturnSinceInception 1.21%
Inception Date of Class rr_AverageAnnualReturnInceptionDate May 25, 2012
(American Beacon SSI Alternative Income Fund℠) | Class Y | Returns After Taxes on Distributions and Sales of Fund Shares  
Prospectus: rr_ProspectusTable  
1 Year rr_AverageAnnualReturnYear01 0.44%
5 Years rr_AverageAnnualReturnYear05 0.93%
Since Inception rr_AverageAnnualReturnSinceInception 1.26%
Inception Date of Class rr_AverageAnnualReturnInceptionDate May 25, 2012
(American Beacon SSI Alternative Income Fund℠) | Institutional Class  
Prospectus: rr_ProspectusTable  
Maximum sales charge imposed on purchases (as a percentage of offering price) rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice none
Maximum deferred sales charge (as a percentage of the lower of original offering price or redemption proceeds) rr_MaximumDeferredSalesChargeOverOther none
Management Fee rr_ManagementFeesOverAssets 1.30%
Distribution and/or Services (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets none
Other Expenses rr_OtherExpensesOverAssets 1.46% [14]
Dividend Expenses on Securities Sold Short rr_Component1OtherExpensesOverAssets 0.34%
Remainder of Other Expenses rr_Component2OtherExpensesOverAssets 1.12%
Acquired Fund Fees and Expenses rr_AcquiredFundFeesAndExpensesOverAssets 0.01%
Total Annual Fund Operating Expenses rr_ExpensesOverAssets 2.77% [15]
Fee Waiver and/or expense reimbursement rr_FeeWaiverOrReimbursementOverAssets (0.93%) [16]
Total Annual Fund Operating Expenses after fee waiver and/or expense reimbursement rr_NetExpensesOverAssets 1.84%
Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 $ 187
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 678
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 1,294
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 $ 2,959
1 Year rr_AverageAnnualReturnYear01 0.57%
5 Years rr_AverageAnnualReturnYear05 1.44%
Since Inception rr_AverageAnnualReturnSinceInception 1.81%
Inception Date of Class rr_AverageAnnualReturnInceptionDate May 17, 2019
(American Beacon SSI Alternative Income Fund℠) | Investor Class  
Prospectus: rr_ProspectusTable  
Maximum sales charge imposed on purchases (as a percentage of offering price) rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice none
Maximum deferred sales charge (as a percentage of the lower of original offering price or redemption proceeds) rr_MaximumDeferredSalesChargeOverOther none
Management Fee rr_ManagementFeesOverAssets 1.30%
Distribution and/or Services (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets none
Other Expenses rr_OtherExpensesOverAssets 1.09% [14]
Dividend Expenses on Securities Sold Short rr_Component1OtherExpensesOverAssets 0.17%
Remainder of Other Expenses rr_Component2OtherExpensesOverAssets 0.92%
Acquired Fund Fees and Expenses rr_AcquiredFundFeesAndExpensesOverAssets 0.01%
Total Annual Fund Operating Expenses rr_ExpensesOverAssets 2.40% [15]
Fee Waiver and/or expense reimbursement rr_FeeWaiverOrReimbursementOverAssets (0.41%) [16]
Total Annual Fund Operating Expenses after fee waiver and/or expense reimbursement rr_NetExpensesOverAssets 1.99%
Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 $ 202
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 668
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 1,204
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 $ 2,672
1 Year rr_AverageAnnualReturnYear01 0.24%
5 Years rr_AverageAnnualReturnYear05 1.18%
Since Inception rr_AverageAnnualReturnSinceInception 1.57%
Inception Date of Class rr_AverageAnnualReturnInceptionDate May 25, 2012
[1] American Beacon Advisors, Inc. (the "Manager") has contractually agreed to waive fees and/or reimburse expenses of the Fund's Y Class, Institutional Class and Investor Class shares, as applicable, through October 31, 2020 to the extent that Total Annual Fund Operating Expenses exceed 0.69% for the Y Class, 0.59% for the Institutional Class, and 0.97% for the Investor Class (excluding taxes, interest, brokerage commissions, acquired fund fees and expenses, securities lending fees, expenses associated with securities sold short , litigation, and other extraordinary expenses). The contractual expense reimbursement can be changed or terminated only in the discretion and with the approval of a majority of the Fund's Board of Trustees. The Manager 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.
[2] Effective April 1, 2019, the Manager agreed to lower the contractual expense ratio caps for all classes of the Fund. The Total Annual Fund Operating Expenses after fee waiver and/or expense reimbursement do not correlate to the Expenses, net of reimbursements, provided in the Fund's Financial Highlights table, which reflect the lower contractual expense ratio caps only for the period from April 1, 2019 to June 30, 2019.
[3] The Total Annual Fund Operating Expenses do not correlate to the ratio of expenses to average net assets provided in the Fund's Financial Highlights table, which reflects the operating expenses of the Fund and does not include Acquired Fund Fees and Expenses.
[4] American Beacon Advisors, Inc. (the "Manager") has contractually agreed to waive fees and/or reimburse expenses of the Fund's Y Class, Institutional Class and Investor Class shares, as applicable, through October 31, 2020 to the extent that Total Annual Fund Operating Expenses exceed 0.89% for the Y Class, 0.79% for the Institutional Class, and 1.17% for the Investor Class (excluding taxes, interest, brokerage commissions, acquired fund fees and expenses, securities lending fees, expenses associated with securities sold short , litigation, and other extraordinary expenses). The contractual expense reimbursement can be changed or terminated only in the discretion and with the approval of a majority of the Fund's Board of Trustees. The Manager 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.
[5] American Beacon Advisors, Inc. (the "Manager") has contractually agreed to waive fees and/or reimburse expenses of the Fund's Y Class, Institutional Class and Investor Class shares, as applicable, through October 31, 2020 to the extent that Total Annual Fund Operating Expenses exceed 0.99% for the Y Class, 0.89% for the Institutional Class, and 1.27% for the Investor Class (excluding taxes, interest, brokerage commissions, acquired fund fees and expenses, securities lending fees, expenses associated with securities sold short , litigation, and other extraordinary expenses). The contractual expense reimbursement can be changed or terminated only in the discretion and with the approval of a majority of the Fund's Board of Trustees. The Manager 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.
[6] 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.
[7] Other Expenses are based on estimated expenses for the current fiscal year.
[8] The Total Annual Fund Operating Expenses do not correlate to the ratio of expenses to average net assets provided in the Fund's Financial Highlights table, which reflects the operating expenses of the Fund and does not include Acquired Fund Fees and Expenses.
[9] 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, Institutional Class and Investor Class shares, as applicable, through October 31, 2020 to the extent that Total Annual Fund Operating Expenses exceed 1.39% for the A Class, 2.14% for the C Class, 1.09% for the Y Class, 0.99% for the Institutional Class, and 1.37% for the Investor Class (excluding taxes, interest, brokerage commissions, acquired fund fees and expenses, securities lending fees, expenses associated with securities sold short, litigation, and other extraordinary expenses). The contractual expense reimbursement can be changed or terminated only in the discretion and with the approval of a majority of the Fund's Board of Trustees. The Manager 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.
[10] During the last fiscal year, the Fund invested in a wholly owned subsidiary organized under Delaware law (the "Delaware Subsidiary"). The Delaware Subsidiary's financial statements are consolidated with those of the Fund. The Delaware Subsidiary, which was liquidated on October 25, 2018, was classified for federal tax purposes as a regular corporation or so-called "C" corporation. As a "C" corporation, the Delaware Subsidiary incurred federal income tax liability associated with gains that the Delaware Subsidiary recognized on sales of its sole investment, shares of the Bitcoin Investment Trust, which the Fund had contributed to the Delaware Subsidiary. The Manager has contractually agreed to reimburse the Fund for the amount of any tax liability incurred by the Delaware Subsidiary in connection with the sale of its shares of the Bitcoin Investment Trust. Therefore, any reduction in the Delaware Subsidiary's value resulting from that liability did not adversely impact the Fund's net asset value per share.
[11] 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.
[12] 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, Institutional Class, Investor Class, and Ultra Class shares, as applicable, through October 31, 2020, to the extent that Total Annual Fund Operating Expenses exceed 1.12% for the A Class, 1.87% for the C Class, 0.82% for the Y Class, 0.72% for the Institutional Class, 1.09% for the Investor Class, and 0.67% for the Ultra Class (excluding taxes, interest, brokerage commissions, acquired fund fees and expenses, securities lending fees, expenses associated with securities sold short, litigation, and other extraordinary expenses). The contractual expense reimbursement can be changed or terminated only in the discretion and with the approval of a majority of the Fund's Board of Trustees. The Manager 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.
[13] The Fund's primary benchmark is the ICE BofAML 3-Month U.S. Treasury Bill Index. The benchmark index of the Fund's predecessor was the FTSE 3-Month T-Bill Index. The Manager has elected to use the ICE BofAML 3-Month U.S. Treasury Bill Index as the Fund's primary benchmark to conform with the index provider used by other funds in the American Beacon Funds Complex.
[14] Other Expenses and Acquired Fund Fees and Expenses are based on estimated expenses for the current fiscal year.
[15] The Total Annual Fund Operating Expenses do not correlate to the ratio of expenses to average net assets provided in the Fund's Financial Highlights table, which reflects the operating expenses of the Fund and does not include Acquired Fund Fees and Expenses.
[16] American Beacon Advisors, Inc. (the "Manager") has contractually agreed to waive fees and/or reimburse expenses of the Fund's Y Class, Institutional Class and Investor Class shares, as applicable, through October 28, 2021 to the extent that Total Annual Fund Operating Expenses exceed 1.56% for the Y Class, 1.49% for the Institutional Class, and 1.81% for the Investor Class (excluding taxes, interest, brokerage commissions, acquired fund fees and expenses, securities lending fees, expenses associated with securities sold short , litigation, and other extraordinary expenses). The contractual expense reimbursement can be changed or terminated only in the discretion and with the approval of a majority of the Fund's Board of Trustees. The Manager 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.