Expense Example, No Redemption: Shareholder Fees [Table] Annual Fund Operating Expenses [Table] Expense Example, With Redemption [Table] Bar Chart [Table] Performance [Table] Expense Example, No Redemption Narrative [Text Block] Market Index Performance [Table] Expense Example, No Redemption [Table] Performance Measure [Axis] Before Taxes Amendment Description Amendment Flag Document Creation Date Document Effective Date Document [Axis] Prospectus Document Period End Date Document Type Entities [Table] Entity [Text Block] Series Trading Symbol Registrant Name Central Index Key Series [Axis] Risk/Return [Heading] Objective Section: Objective [Heading] Objective, Primary [Text Block] Objective, Secondary [Text Block] Strategy Section: Strategy [Heading] Strategy Narrative [Text Block] Strategy Portfolio Concentration [Text] Bar Chart and Performance Table [Heading] Performance Narrative [Text Block] Performance Past Does Not Indicate Future [Text] Performance Information Illustrates Variability of Returns [Text] Performance One Year or Less [Text] Performance Additional Market Index [Text] Bar Chart [Heading] Bar Chart Narrative [Text Block] Bar Chart Does Not Reflect Sales Loads [Text] Bar Chart, Returns for Class Not Offered in Prospectus [Text] Bar Chart, Reason Selected Class Different from Immediately Preceding Period [Text] Annual Return Caption [Text] Caption Annual Return, Column [Text] Column Annual Return, Inception Date Inception Date Annual Return 1990 Annual Return 1991 Annual Return 1992 Annual Return 1993 Annual Return 1994 Annual Return 1995 Annual Return 1996 Annual Return 1997 Annual Return 1998 Annual Return 1999 Annual Return 2000 Annual Return 2001 Annual Return 2002 Annual Return 2003 Annual Return 2004 Annual Return 2005 Annual Return 2006 Annual Return 2007 Annual Return 2008 Annual Return 2009 Annual Return 2010 Annual Return 2011 Annual Return 2012 Annual Return 2013 Annual Return 2014 Annual Return 2015 Annual Return 2016 Annual Return 2017 Annual Return 2018 Annual Return 2019 Annual Return 2020 Year to Date Return, Label Bar Chart, Year to Date Return Bar Chart, Year to Date Return, Date Highest Quarterly Return, Label Label Highest Quarterly Return Highest Quarterly Return, Date Lowest Quarterly Return, Label Label Lowest Quarterly Return Lowest Quarterly Return, Date Bar Chart Closing [Text Block] Performance Table Heading Performance Table Narrative Performance Table Does Reflect Sales Loads Performance Table Market Index Changed Performance Table Uses Highest Federal Rate Performance Table Not Relevant to Tax Deferred Performance Table Explanation after Tax Higher Caption Column Label 1 Year 5 Years 10 Years Since Inception Inception Date Money Market Seven Day Yield, Caption [Text] Money Market Seven Day Yield Column [Text] Money Market Seven Day Yield Phone Money Market Seven Day Yield Money Market Seven Day Tax Equivalent Yield Thirty Day Yield Caption Thirty Day Yield Column [Text] Thirty Day Yield Phone Thirty Day Yield Thirty Day Tax Equivalent Yield Performance Table Footnotes Performance Table Closing [Text Block] Risk Section: Risk [Heading] Risk Narrative [Text Block] Risk Nondiversified Status [Text] Risk Lose Money [Text] Risk Money Market Fund [Text] Risk Not Insured Depository Institution [Text] Risk Caption Risk Column [Text] Risk [Text] Risk Footnotes [Text Block] Risk Closing [Text Block] Expense [Heading] Expense Narrative [Text Block] Expense Breakpoint Discounts [Text] Expense Exchange Traded Fund Commissions [Text] Shareholder Fees Caption [Text] Shareholder Fees Column [Text] Maximum Cumulative Sales Charge (as a percentage of Offering Price) Maximum Cumulative Sales Charge (as a percentage) Maximum sales charge imposed on purchases (as a percentage of offering price) Maximum deferred sales charge (as a percentage of the lower of original offering price or redemption proceeds) Maximum Deferred Sales Charge (as a percentage of Offering Price) Maximum Sales Charge on Reinvested Dividends and Distributions (as a percentage) Redemption fee (as a percentage of amount redeemed; applies to the proceeds of shares redeemed within 90 days of purchase) Redemption fee (as a percentage of amount redeemed; applies to the proceeds of shares redeemed within 90 days of purchase) Redemption Fee Redemption Fee Exchange Fee (as a percentage of Amount Redeemed) Exchange Fee Maximum Account Fee (as a percentage of Assets) Maximum Account Fee Shareholder Fee, Other Operating Expenses Caption [Text] Operating Expenses Column [Text] Management Fees Distribution and/or Service (12b-1) Fees Distribution or Similar (Non 12b-1) Fees Other Expenses Other Expenses Component1 Other Expenses Component2 Other Expenses Component3 Other Expenses Acquired Fund Fees and Expenses Total Annual Fund Operating Expenses Total Annual Fund Operating Expenses Fee Waiver and/or expense reimbursement Fee Waiver and/or expense reimbursement Total Annual Fund Operating Expenses after fee waiver and/or expense reimbursement Total Annual Fund Operating Expenses after fee waiver and/or expense reimbursement Expenses Represent Both Master and Feeder [Text] Expenses Other Expenses Had Extraordinary Expenses Been Included [Text] Expenses Restated to Reflect Current [Text] Expense Example [Heading] Expense Example Narrative [Text Block] Expense Example by Year [Heading] Expense Example by, Year, Caption [Text] Expense Example, By Year, Column [Text] Column Expense Example, with Redemption, 1 Year 1 Year Expense Example, with Redemption, 3 Years 3 Years Expense Example, with Redemption, 5 Years 5 Years Expense Example, with Redemption, 10 Years 10 Years Expense Example, No Redemption, By Year, Caption [Text] Expense Example, No Redemption, By Year, Column [Text] Column Expense Example, No Redemption, 1 Year 1 Year Expense Example, No Redemption, 3 Years 3 Years Expense Example, No Redemption, 5 Years 5 Years Expense Example, No Redemption, 10 Years 10 Years Expense Example Closing [Text Block] Prospectus Date Prospectus: Share Class [Axis] Share Classes Prospectus [Line Items] Form N-1A: Risk/Return: Portfolio Turnover [Heading] Portfolio Turnover [Text Block] Bar Chart and Performance Table Section: Bar Chart Narrative: Bar Chart Table: Bar Chart Closing: Average Annual Return: Market Index Return: Performance Narrative: Performance Table Section: Performance Table Closing: Expenses: Shareholder Fees: Operating Expenses: Net Expenses (as a percentage of Assets): Expenses (as a percentage of Assets): Other Expenses over Assets: Expense Footnotes: Expense Footnotes [Text Block] Expense Example Narrative: Expense Example: Expense Example Closing: Expense Example Footnotes [Text Block] Portfolio Turnover: Fee Waiver or Reimbursement over Assets, Date of Termination Portfolio Turnover, Rate Expense Breakpoint, Minimum Investment Required [Amount] Performance Table Footnotes, Reason Performance Information for Class Different from Immediately Preceding Period [Text] Bar Chart Footnotes [Text Block] Performance Table One Class of after Tax Shown [Text] Other Expenses, New Fund, Based on Estimates [Text] Acquired Fund Fees and Expenses, Based on Estimates [Text] Expenses Deferred Charges [Text Block] Expenses Range of Exchange Fees [Text Block] Expenses Not Correlated to Ratio Due to Acquired Fund Fees [Text] Expenses Explanation of Nonrecurring Account Fee [Text] Index No Deduction for Fees, Expenses, Taxes [Text] Performance Availability Website Address [Text] Performance Availability Phone [Text] Returns After Taxes on Distributions Returns After Taxes on Distributions and Sales of Fund Shares S000044050 Member (American Beacon Frontier Markets Income Fund℠) S000046747 Member (American Beacon Crescent Short Duration High Income Fund℠) S000063263 Member (American Beacon Continuous Capital Emerging Markets Fund℠) S000053744 Member (American Beacon GLG Total Return Fund℠) (American Beacon Crescent Short Duration High Income Fund℠) AAAA Member American Beacon Crescent Short Duration High Income Fund (American Beacon GLG Total Return Fund℠) BBBB Member American Beacon GLG Total Return Fund (American Beacon Frontier Markets Income Fund℠) CCCC Member American Beacon Frontier Markets Income Fund (American Beacon Continuous Capital Emerging Markets Fund℠) DDDD Member American Beacon Continuous Capital Emerging Markets Fund C000136710 Member Class A C000136711 Member Class C C000136712 Member Class R5 C000136713 Member Investor Class C000136714 Member Class Y C000146019 Member Class A C000146020 Member Class C C000146022 Member Class R5 C000146023 Member Investor Class C000146021 Member Class Y C000205195 Member Class R5 C000205193 Member Investor Class C000205194 Member Class Y C000168934 Member Class A C000168935 Member Class C C000168936 Member Class R5 C000168937 Member Investor Class C000168938 Member Ultra Class C000168939 Member Class Y bench2014121703AAAA Member ICE BofA US High-Yield Cash Pay BB-B 1-5 Year Index (Reflects no deduction for fees, expenses or taxes) bench2014121720BBBB Member ICE BofA Merrill Lynch 3 Month LIBOR Constant Maturity Index (Reflects no deduction for fees, expenses or taxes) bench2014121725CCCC Member JPMorgan EMBI Global Diversified Index (Reflects no deduction for fees, expenses or taxes) bench2014121726DDDD Member MSCI Emerging Markets Index (Reflects no deduction for fees, expenses or taxes)