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A Fund also may identify its type or category (e.g., that it is a Money Market Fund or a balanced fund).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 2 -Subsection a falsefalseObjective, Primary [Text Block]6false0rr_ExpenseHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<i>Fees and Expenses of the Fund</i>falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringRisk/Return Summary Fee Table Includes the following information, in plain English under rule 421(d) under the Securities Act, after Item 2 Fees and expenses of the Fund This table describes the fees and expenses that you may pay if you buy and hold shared of the Fund. You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $[_____] in [name of fund family] funds. Shareholder Fees (fees paid directly from your investment) Example 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 you redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return per year and that the Fund's operating expenses remained the same. Although your actual costs may be higher or lower, based on these assumptions your costs would be You would pay the following expenses if you did not redeem your shares The Example does not reflect sales charges (loads) on reinvested dividends [and other distributions]. If these sales charges (loads) were included, your costs would be higher. Portfolio Turnover The Fund pays transaction costs, such as commissions, when it buys and sells securities (or "turns over" its portfolio). A higher portfolio turnover may indicate higher transaction costs. 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 __% of the average value of its whole portfolio. Instructions. A.3.instructions.6 New Funds. For purposes of this Item, a "New Fund" is a Fund that does not include in Form N-1A financial statements reporting operating results or that includes financial statements for the Fund's initial fiscal year reporting operating results for a period of 6 months or less. The following Instructions apply to New Funds.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph d -Subsection instructions falsefalseExpense [Heading]7false0rr_ExpenseNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00This 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 the A Class shares of the American Beacon Funds. More information about these and other discounts is available from your financial professional and in “Choosing Your Share Class” on page 76 of the prospectus and “Additional Purchase and Sale Information for A Class Shares” on page 90 of the statement of additional information.falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringThis table describes the fees and expenses that you may pay if you buy and hold shared of the Fund. You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $[_____] in [name of fund family] funds. Include the narrative explanations in the order indicated. A Fund may modify the narrative explanations if the explanation contains comparable information to that shown.The narrative explanation regarding sales charge discounts is only required by a Fund that offers such discounts and should specify the minimum level of investment required to qualify for a discount. 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available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1falsefalsefalse00Afalsefalsefalsetruefalse2falsefalsefalse00Cfalsefalsefalsetruefalse3falsefalsefalse00Institutionalfalsefalsefalsetruefalse4falsefalsefalse00Yfalsefalsefalsetruefalse5falsefalsefalse00Investorfalsefalsefalsetruefalse6falsefalsefalse00Advisorfalsefalsefalsetruefalse7falsefalsefalse00RetirementfalsefalsefalsetruefalseOtherus-types:textBlockItemTypestringAnnual Fund Operating Expenses (ongoing expenses that you pay each year as a percentage of the value of your investment)Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 7 -Subsection table falsefalseShare 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available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1truetruetrue0.00240.0024falsefalsefalsetruefalse2truetruetrue0.00240.0024falsefalsefalsetruefalse3truetruetrue0.00240.0024falsefalsefalsetruefalse4truetruetrue0.00240.0024falsefalsefalsetruefalse5truetruetrue0.00240.0024falsefalsefalsetruefalse6truetruetrue0.00240.0024falsefalsefalsetruefalse7truetruetrue0.00240.0024falsefalsefalsetruefalseOtherrr:NonNegativePure4TypepureManagement Fees include investment advisory fees (including any fees based on the Fund's performance), any other management fees payable to the investment adviser or its affiliates, and administrative fees payable to the investment adviser or its affiliates that are not included as "Other Expenses."Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 3 -Subparagraph a -Subsection instructions falsefalseManagement 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available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1truetruetrue0.00250.0025falsefalsefalsetruefalse2truetruetrue0.01000.0100falsefalsefalsetruefalse3truetruetrue0.00000.0000falsefalsefalsetruefalse4truetruetrue0.00000.0000falsefalsefalsetruefalse5truetruetrue0.00000.0000falsefalsefalsetruefalse6truetruetrue0.00250.0025falsefalsefalsetruefalse7truetruetrue0.00500.0050falsefalsefalsetruefalseOtherrr:NonNegativePure4TypepureDistribution [and/or Service] (12b-1) Fees" include all distribution or other expenses incurred during the most recent fiscal year under a plan adopted pursuant to rule 12b-1 [17 CFR 270.12b-1]. Under an appropriate caption or a subcaption of "Other Expenses," disclose the amount of any distribution or similar expenses deducted from the Fund's assets other than pursuant to a rule 12b-1 plan.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 9 -Subsection table falsefalseDistribution and/or service (12b-1) fees0rr_DistributionAndService12b1FeesOverAssetstruefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.00250.0025falsefalsefalsetruefalse2truetruetrue0.01000.0100falsefalsefalsetruefalse3truetruetrue0.00000.0000falsefalsefalsetruefalse4truetruetrue0.00000.0000falsefalsefalsetruefalse5truetruetrue0.00000.0000falsefalsefalsetruefalse6truetruetrue0.00250.0025falsefalsefalsetruefalse7truetruetrue0.00500.0050falsefalsefalsetruefalseOthernanafalsefalseDistribution and/or service (12b-1) fees4falseRowprimaryElement*7false0rr_OtherExpensesOverAssetsrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1truetruetrue0.00570.0057falsefalsefalsetruefalse2truetruetrue0.00630.0063falsefalsefalsetruefalse3truetruetrue0.00350.0035falsefalsefalsetruefalse4truetruetrue0.00460.0046falsefalsefalsetruefalse5truetruetrue0.00720.0072falsefalsefalsetruefalse6truetruetrue0.00610.0061falsefalsefalsetruefalse7truetruetrue0.00630.0063falsefalsefalsetruefalseOtherrr:NonNegativePure4Typepure"Other Expenses" include all expenses not otherwise disclosed in the table that are deducted from the Fund's assets or charged to all shareholder accounts. The amount of expenses deducted from the Fund's assets are the amounts shown as expenses in the Fund's statement of operations (including increases resulting from complying with paragraph 2(g) of rule 6-07 of Regulation S-X [17 CFR 210.6-07]). "Other Expenses" do not include extraordinary expenses as determined under generally accepted accounting principles (see Accounting Principles Board Opinion No. 30). If extraordinary expenses were incurred that materially affected the Fund's "Other Expenses," disclose in a footnote to the table what "Other Expenses" would have been had the extraordinary expenses been included.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 3 -Subparagraph c -Clause i -Subsection instructions falsefalseOther expenses0rr_OtherExpensesOverAssetstruefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.00570.0057falsefalsefalsetruefalse2truetruetrue0.00630.0063falsefalsefalsetruefalse3truetruetrue0.00350.0035falsefalsefalsetruefalse4truetruetrue0.00460.0046falsefalsefalsetruefalse5truetruetrue0.00720.0072falsefalsefalsetruefalse6truetruetrue0.00610.0061falsefalsefalsetruefalse7truetruetrue0.00630.0063falsefalsefalsetruefalseOthernanafalsefalseOther expenses5falseRowprimaryElement*8false0rr_AcquiredFundFeesAndExpensesOverAssetsrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1truetruetrue0.00010.0001falsefalsefalsetruefalse2truetruetrue0.00010.0001falsefalsefalsetruefalse3truetruetrue0.00010.0001falsefalsefalsetruefalse4truetruetrue0.00010.0001falsefalsefalsetruefalse5truetruetrue0.00010.0001falsefalsefalsetruefalse6truetruetrue0.00010.0001falsefalsefalsetruefalse7truetruetrue0.00010.0001falsefalsefalsetruefalseOtherrr:NonNegativePure4TypepureTotal Annual Fund Operating Expenses.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 11 -Subsection table falsefalseAcquired Fund Fees and Expenses0rr_AcquiredFundFeesAndExpensesOverAssetstruefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.00010.0001falsefalsefalsetruefalse2truetruetrue0.00010.0001falsefalsefalsetruefalse3truetruetrue0.00010.0001falsefalsefalsetruefalse4truetruetrue0.00010.0001falsefalsefalsetruefalse5truetruetrue0.00010.0001falsefalsefalsetruefalse6truetruetrue0.00010.0001falsefalsefalsetruefalse7truetruetrue0.00010.0001falsefalsefalsetruefalseOthernanafalsefalseAcquired Fund Fees and Expenses6falseRowprimaryElement*9false0rr_ExpensesOverAssetsrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1truetruetrue0.01070.0107[1]falsefalsefalsetruefalse2truetruetrue0.01880.0188[1]falsefalsefalsetruefalse3truetruetrue0.00600.0060[1]falsefalsefalsetruefalse4truetruetrue0.00710.0071[1]falsefalsefalsetruefalse5truetruetrue0.00970.0097[1]falsefalsefalsetruefalse6truetruetrue0.01110.0111[1]falsefalsefalsetruefalse7truetruetrue0.01380.0138[1]falsefalsefalsetruefalseOtherrr:NonNegativePure4TypepureTotal Annual Fund Operating Expenses. If the Fund is a Feeder Fund, reflect the aggregate expenses of the Feeder Fund and the Master Fund in a single fee table using the captions provided. In a footnote to the fee table, state that the table and Example reflect the expenses of both the Feeder and Master Funds. If the prospectus offers more than one Class of a Multiple Class Fund or more than one Feeder Fund that invests in the same Master Fund, provide a separate response for each Class or Feeder Fund. Base the percentages of "Annual Fund Operating Expenses" on amounts incurred during the Fund's most recent fiscal year, but include in expenses amounts that would have been incurred absent expense reimbursement or fee waiver arrangements. If the Fund has changed its fiscal year and, as a result, the most recent fiscal year is less than three months, use the fiscal year prior to the most recent fiscal year as the basis for determining "Annual Fund Operating Expenses."Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 3 -Subparagraph d -Subsection instructions falsefalseTotal annual fund operating expenses0rr_ExpensesOverAssetstruefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse[1]1truetruetrue0.01070.0107falsefalsefalsetruefalse2truetruetrue0.01880.0188falsefalsefalsetruefalse3truetruetrue0.00600.0060falsefalsefalsetruefalse4truetruetrue0.00710.0071falsefalsefalsetruefalse5truetruetrue0.00970.0097falsefalsefalsetruefalse6truetruetrue0.01110.0111falsefalsefalsetruefalse7truetruetrue0.01380.0138falsefalsefalsetruefalseOthernanafalsefalseTotal annual fund operating expenses1The 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.76Annual Fund Operating Expenses - American Beacon Large Cap Value Fund (Class A, C, Institutional, Y, Investor, Advisor and Retirement) American Beacon Large Cap Value Fund Class A, C, Institutional, Y, Investor, Advisor and RetirementUnKnownUnKnownUnKnownUnKnownfalsetrueColumnperiodPeriod*Columndei_DocumentInformationDocumentAxisAxis*Columndei_LegalEntityAxisAxis*Columnrr_ProspectusShareClassAxisAxis*ColumnunitUnit*RowprimaryElement*falsefalsefalseOtherus-types:textBlockItemTypestringContains a command for the SEC Viewer for the role corresponding to OperatingExpensesData.No authoritative reference available.falsefalseAnnual Fund Operating Expenses [Table]12false0rr_ExpenseExampleHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00ExamplefalsefalsefalsefalsefalseOtherxbrli:stringItemTypestringHeading for Expense Example.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 4 -Subsection instructions falsefalseExpense Example [Heading]13false0rr_ExpenseExampleNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00This Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return each year and that the Fund’s operating expenses remain the same. Although your actual costs may be higher or lower, based on these assumptions, your costs would be:falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringThe Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 1 -Subsection example falsefalseExpense Example Narrative [Text Block]14false0rr_ExpenseExampleWithRedemptionTableTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div> <div style="display:none;">~ http://americanbeaconfunds.com/role/ExpenseExampleAmericanBeaconLargeCapValueFundClassACInstitutionalYInvestorAdvisorAndRetirement column period compact * column rr_ProspectusShareClassAxis compact * row primary compact * row dei_DocumentInformationDocumentAxis compact abf809593_S000001091_Member * row dei_LegalEntityAxis compact abf809593_ProspectusTwo_Member * ~</div> </div>falsefalse<div> <div style="display:none;">~ http://americanbeaconfunds.com/role/ExpenseExampleAmericanBeaconLargeCapValueFundClassACInstitutionalYInvestorAdvisorAndRetirement column period compact * column rr_ProspectusShareClassAxis compact * row primary compact * row dei_DocumentInformationDocumentAxis compact abf809593_S000001091_Member * row dei_LegalEntityAxis compact abf809593_ProspectusTwo_Member * ~</div> </div>truehttp://americanbeaconfunds.com/role/ExpenseExampleAmericanBeaconLargeCapValueFundClassACInstitutionalYInvestorAdvisorAndRetirementfalsefalse0200302 - Schedule - Expense Example - American Beacon Large Cap Value Fund (Class A, C, Institutional, Y, Investor, Advisor and Retirement) {Transposed}truefalsefalse1falseColumnprimaryElement*4false0rr_ExpenseExampleByYearColumnNamerrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1falsefalsefalse00Afalsefalsefalsetruefalse2falsefalsefalse00Cfalsefalsefalsetruefalse3falsefalsefalse00Institutionalfalsefalsefalsetruefalse4falsefalsefalse00Yfalsefalsefalsetruefalse5falsefalsefalse00Investorfalsefalsefalsetruefalse6falsefalsefalse00Advisorfalsefalsefalsetruefalse7falsefalsefalse00RetirementfalsefalsefalsetruefalseOtherus-types:textBlockItemTypestringThe Example assumes that you invest $10,000 in the Fund for the time periods indicated and then you redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return per year and that the Fund's operating expenses remained the same. Although your actual costs may be higher or lower.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 2 -Subsection example falsefalseShare classfalseUSDfalsefalse$2falseColumnprimaryElement*5false0rr_ExpenseExampleYear01rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1truefalsetrue678678falsefalsefalsetruefalse2truefalsetrue291291falsefalsefalsetruefalse3truefalsetrue6161falsefalsefalsetruefalse4truefalsetrue7373falsefalsefalsetruefalse5truefalsetrue9999falsefalsefalsetruefalse6truefalsetrue113113falsefalsefalsetruefalse7truefalsetrue140140falsefalsefalsetruefalseMonetaryrr:NonNegativeMonetaryTypemonetaryThe Example assumes that you invest $10,000 in the Fund for the time periods indicated and then you redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return per year and that the Fund's operating expenses remained the same. Although your actual costs may be higher or lower.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 4 -Subsection instructions falsefalse1 yearfalseUSDfalsefalse$3falseColumnprimaryElement*6false0rr_ExpenseExampleYear03rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1truefalsetrue896896falsefalsefalsetruefalse2truefalsetrue591591falsefalsefalsetruefalse3truefalsetrue192192falsefalsefalsetruefalse4truefalsetrue227227falsefalsefalsetruefalse5truefalsetrue309309falsefalsefalsetruefalse6truefalsetrue353353falsefalsefalsetruefalse7truefalsetrue437437falsefalsefalsetruefalseMonetaryrr:NonNegativeMonetaryTypemonetaryThe Example assumes that you invest $10,000 in the Fund for the time periods indicated and then you redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return per year and that the Fund's operating expenses remained the same. Although your actual costs may be higher or lower.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 2 -Subsection example falsefalse3 yearsfalseUSDfalsefalse$4falseColumnprimaryElement*7false0rr_ExpenseExampleYear05rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1truefalsetrue11311131falsefalsefalsetruefalse2truefalsetrue10161016falsefalsefalsetruefalse3truefalsetrue335335falsefalsefalsetruefalse4truefalsetrue395395falsefalsefalsetruefalse5truefalsetrue536536falsefalsefalsetruefalse6truefalsetrue612612falsefalsefalsetruefalse7truefalsetrue755755falsefalsefalsetruefalseMonetaryrr:NonNegativeMonetaryTypemonetaryThe Example assumes that you invest $10,000 in the Fund for the time periods indicated and then you redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return per year and that the Fund's operating expenses remained the same. Although your actual costs may be higher or lower.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 2 -Subsection example falsefalse5 yearsfalseUSDfalsefalse$5falseColumnprimaryElement*8false0rr_ExpenseExampleYear10rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1truefalsetrue18061806falsefalsefalsetruefalse2truefalsetrue22012201falsefalsefalsetruefalse3truefalsetrue750750falsefalsefalsetruefalse4truefalsetrue883883falsefalsefalsetruefalse5truefalsetrue11901190falsefalsefalsetruefalse6truefalsetrue13521352falsefalsefalsetruefalse7truefalsetrue16571657falsefalsefalsetruefalseMonetaryrr:NonNegativeMonetaryTypemonetaryThe Example assumes that you invest $10,000 in the Fund for the time periods indicated and then you redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return per year and that the Fund's operating expenses remained the same. Although your actual costs may be higher or lower.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 2 -Subsection example falsefalse10 yearsfalseUSDfalsefalse$1falseRowperiodPeriod*Rowdei_DocumentInformationDocumentAxisAxis*Rowdei_LegalEntityAxisAxis*Rowrr_ProspectusShareClassAxisAxis*RowunitUnit*duration2010-03-01T00:00:002011-03-01T00:00:00falsefalseAmerican Beacon Large Cap Value Funddei_DocumentInformationDocumentAxisxbrldihttp://xbrl.org/2006/xbrldiabf809593_S000001091Memberdei_DocumentInformationDocumentAxisexplicitMemberfalsefalseClass A, C, Institutional, Y, Investor, Advisor and Retirementdei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldiabf809593_ProspectusTwoMemberdei_LegalEntityAxisexplicitMemberfalsefalseClass A, American Beacon Large Cap Value Fundrr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldiabf809593_C000089422Memberrr_ProspectusShareClassAxisexplicitMemberAmerican Beacon Large Cap Value FundClass A, C, Institutional, Y, Investor, Advisor and RetirementClass A, American Beacon Large Cap Value FundUSDStandardhttp://www.xbrl.org/2003/iso4217USDiso421700truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00AAfalsefalsefalsetruefalse2truefalsetrue678678falsefalsefalsetruefalse3truefalsetrue896896falsefalsefalsetruefalse4truefalsetrue11311131falsefalsefalsetruefalse5truefalsetrue18061806falsefalsefalsetruefalseOthernanafalsefalseClass A, American Beacon Large Cap Value Fund2falseRowperiodPeriod*Rowdei_DocumentInformationDocumentAxisAxis*Rowdei_LegalEntityAxisAxis*Rowrr_ProspectusShareClassAxisAxis*RowunitUnit*duration2010-03-01T00:00:002011-03-01T00:00:00falsefalseAmerican Beacon Large Cap Value Funddei_DocumentInformationDocumentAxisxbrldihttp://xbrl.org/2006/xbrldiabf809593_S000001091Memberdei_DocumentInformationDocumentAxisexplicitMemberfalsefalseClass A, C, Institutional, Y, Investor, Advisor and 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Disclose the period for which the information is provided if less than a full fiscal year. A Fund that is a Money Market Fund may omit the portfolio turnover information required by this Item.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 5 -Subsection instructions falsefalsePortfolio Turnover [Heading]18false0rr_PortfolioTurnoverTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00The 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 28% of the average value of its portfolio.falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringDisclose the portfolio turnover rate provided in response to Item 14(a) for the most recent fiscal year (or for such shorter period as the Fund has been in operation). Disclose the period for which the information is provided if less than a full fiscal year. A Fund that is a Money Market Fund may omit the portfolio turnover information required by this Item.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 3 -Subsection example falsefalsePortfolio Turnover [Text Block]19false0rr_StrategyHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<i>Principal Investment Strategies</i>falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringPrincipal investment strategies of the Fund. Summarize how the Fund intends to achieve its investment objectives by identifying the Fund's principal investment strategies (including the type or types of securities in which the Fund invests or will invest principally) and any policy to concentrate in securities of issuers in a particular industry or group of industries.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection a falsefalseStrategy [Heading]20false0rr_StrategyNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p>Ordinarily, at least 80% of the Fund’s net assets (plus the amount of any borrowings for investment purposes) are invested in equity securities of large market capitalization U.S. companies. These companies have market capitalizations similar to the market capitalizations of the companies in the Russell 1000® Index at the time of investment. The Russell 1000 Index measures the performance of the 1,000 largest U.S. companies based on total market capitalization. As of December 31, 2010, the market capitalizations of the companies in the Russell 1000 Index ranged from $251 million to $372.7 billion.</p><p>The Fund’s investments may include common stocks, preferred stocks, securities convertible into U.S. common stocks real estate investment trusts (“REITs”), American Depositary Receipts and U.S. dollar-denominated foreign stocks trading on U.S. exchanges (collectively referred to as “stocks”).</p><p>The Manager allocates the assets of the Fund among different sub-advisors. The Manager believes that this strategy may help the Fund outperform other investment styles over the longer term while minimizing volatility and downside risk. The Fund’s assets are currently allocated among four investment sub-advisors.</p><p>The Fund’s sub-advisors select stocks that, in their opinion, have most or all of the following characteristics (relative to the S&P 500® Index):</p><p>above-average earnings growth potential,</p><p>below-average price to earnings ratio,</p><p>below-average price to book value ratio, and</p><p>above-average dividend yields.</p><p>Each of the Fund’s sub-advisors determines the earnings growth prospects of companies based upon a combination of internal and external research using fundamental analysis and considering changing economic trends. The decision to sell a stock is typically based on the belief that the company is no longer considered undervalued or shows deteriorating fundamentals, or that better investment opportunities exist in other stocks.</p>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringPrincipal investment strategies of the Fund. Summarize how the Fund intends to achieve its investment objectives by identifying the Fund's principal investment strategies (including the type or types of securities in which the Fund invests or will invest principally) and any policy to concentrate in securities of issuers in a particular industry or group of industries.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection a falsefalseStrategy Narrative [Text Block]21false0rr_RiskHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<i<Principal Risks</i>falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNarrative Risk Disclosure.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 1 -Subsection b falsefalseRisk [Heading]22false0rr_RiskNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p>There is no assurance that the Fund will achieve its investment objective and you could lose money by investing in the Fund. The Fund is not designed for investors who need an assured level of current income. The Fund 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 are:</p><p><b>Market Risk</b></p><p>Since this Fund invests most of its assets in stocks, it is subject to stock market risk. Market risk involves the possibility that the value of the Fund’s investments in stocks will vary from day to day in response to the activities of individual companies, as well as general market, regulatory, political and economic conditions. From time to time, certain securities held by the Fund may have limited marketability and may be difficult to sell at favorable times or prices. If the Fund is forced to sell such securities to meet redemption requests or other cash needs, the Fund may have to sell them at a loss.</p><p><b>Equity Securities Risk</b></p><p>Equity securities generally are subject to market risk. The Fund’s investments in equity securities may include common stocks, preferred stocks, securities convertible into or exchangeable for common stocks, real estate investment trusts (“REITs”), American Depositary Receipts (“ADRs”) and U.S. dollar-denominated foreign stocks trading on U.S. exchanges. Investing in such securities may expose the Fund to additional risks.</p><p>Common stock generally is subordinate to preferred stock upon the liquidation or bankruptcy of the issuing company. Preferred stocks and convertible securities are sensitive to movements in interest rates. In addition, convertible securities are subject to the risk that the credit standing of the issuer may have an effect on the convertible securities’ investment value. Investments in ADRs and U.S. dollar-denominated foreign stocks trading on U.S. exchanges are subject to certain of the risks associated with investing directly in foreign securities. Investments in REITs are subject to the risks associated with investing in the real estate industry such as adverse developments affecting the real estate industry and real property values.</p><p><b>Value Stocks Risk</b></p><p>Value stocks are subject to the risk that their intrinsic value may never be realized by the market or that their prices may go down. While the Fund’s investments in value stocks may limit its downside risk over time, the Fund may produce more modest gains than riskier stock funds as a trade-off for this potentially lower risk. Different investment styles tend to shift in and out of favor, depending on market conditions and investor sentiment. The Fund’s value style could cause the Fund to underperform funds that use a growth or non-value approach to investing or have a broader investment style.</p><p><b>Foreign Exposure Risk</b></p><p>The Fund may invest in securities issued by foreign companies through American Depositary Receipts (“ADRs”) and U.S. dollar-denominated foreign stocks trading on U.S. exchanges. These securities are subject to many of the risks inherent in investing in foreign securities, including, but not limited to, currency fluctuations and political and financial instability in the home country of a particular ADR or foreign stock.</p><p><b>Securities Selection Risk</b></p><p> Securities selected by a sub-advisor for the Fund may not perform to expectations. This could result in the Fund’s underperformance compared to other funds with similar investment objectives.</p><p><b>Investment Risk</b></p><p>An investment in the Fund is not a deposit of 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.</p><p><b>Market Events</b></p><p>Turbulence in financial markets and reduced liquidity in equity, credit and fixed-income markets may negatively affect many issuers worldwide which may have an adverse effect on the Fund.</p>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringNarrative Risk Disclosure. A Fund may, in responding to this Item, describe the types of investors for whom the Fund is intended or the types of investment goals that may be consistent with an investment in the Fund.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 1 -Subparagraph i -Clause instruction -Subsection b falsefalseRisk Narrative [Text Block]23false0rr_BarChartAndPerformanceTableHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<i>Fund Performance</i>falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringRisk/Return Bar Chart and Table.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subsection b falsefalseBar Chart and Performance Table [Heading]24false0rr_PerformanceNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p>The bar chart and table below provide an indication of risk by showing 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 and the Lipper Large-Cap Value Funds Index, a composite of mutual funds comparable to the Fund.</p><p>The chart and the table below show the performance of the Fund’s Institutional Class shares for all periods. The Fund began offering Advisor Class shares on May 31, 2005, Retirement Class Shares on May 1, 2009, Y Class shares on August 3, 2009, A Class shares on May 17, 2010 and C Class shares on September 1, 2010. In the table below, the performance of the Institutional Class shares is shown for the Y Class shares and the performance of the Investor Class shares is shown for the Advisor Class, A Class and C Class shares, prior to the dates such newer classes were first offered. For Retirement Class shares, performance results before May 31, 2005 are for Investor Class shares and performance results from May 31, 2005 through May 1, 2009 are for Advisor Class shares. In each case, the older share classes would have had similar annual returns to the newer share classes because the shares are invested in the same portfolio securities. However, because the older classes had lower expenses, their performance was better than the newer classes would have realized in the same period. 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.</p><p>Sales charges are not reflected in the bar chart and table below. 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taxes)falsefalsefalsetruefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsetruefalse002005-05-312005-05-31falsefalsetruetruefalse5truetruetrue0.13980.1398falsefalsefalsetruefalse6truetruetrue0.01180.0118falsefalsefalsetruefalse7truetruetrue0.04800.0480falsefalsefalsetruefalseOthernanafalsefalseAmerican Beacon Large Cap Value Fund Return Before Taxes Advisor Class, American Beacon Large Cap Value Fund7falseRowperiodPeriod*Rowdei_DocumentInformationDocumentAxisAxis*Rowrr_PerformanceMeasureAxisAxis*Rowdei_LegalEntityAxisAxis*Rowrr_ProspectusShareClassAxisAxis*RowunitUnit*duration2010-03-01T00:00:002011-03-01T00:00:00falsefalseAmerican Beacon Large Cap Value Funddei_DocumentInformationDocumentAxisxbrldihttp://xbrl.org/2006/xbrldiabf809593_S000001091Memberdei_DocumentInformationDocumentAxisexplicitMemberfalsefalseReturn Before Taxesrr_PerformanceMeasureAxisxbrldihttp://xbrl.org/2006/xbrldiabf809593_ReturnBeforeTaxesMemberrr_PerformanceMeasureAxisexplicitMemberfalsefalseClass A, C, 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Fundrr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldiabf809593_C000002969Memberrr_ProspectusShareClassAxisexplicitMemberAmerican Beacon Large Cap Value FundReturn After Taxes on DistributionsClass A, C, Institutional, Y, Investor, Advisor and RetirementInstitutional Class, American Beacon Large Cap Value FundStandard00truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsetruefalse00Institutional ClassInstitutional Classfalsefalsefalsetruefalse2falsetruefalse00Return After Taxes on DistributionsReturn After Taxes on Distributionsfalsefalsefalsetruefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsetruefalse001987-07-171987-07-17falsefalsetruetruefalse5truetruetrue0.14330.1433falsefalsefalsetruefalse6truetruetrue0.01180.0118falsefalsefalsetruefalse7truetruetrue0.04640.0464falsefalsefalsetruefalseOthernanafalsefalseAmerican Beacon Large Cap Value Fund Return After Taxes on Distributions Institutional Class, American Beacon Large Cap Value 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Fundrr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldiabf809593_C000002969Memberrr_ProspectusShareClassAxisexplicitMemberAmerican Beacon Large Cap Value FundReturn After Taxes on Distributions and Sale of Fund SharesClass A, C, Institutional, Y, Investor, Advisor and RetirementInstitutional Class, American Beacon Large Cap Value FundStandard00truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsetruefalse00Institutional ClassInstitutional Classfalsefalsefalsetruefalse2falsetruefalse00Return After Taxes on Distributions and Sale of Fund SharesReturn After Taxes on Distributions and Sale of Fund Sharesfalsefalsefalsetruefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsetruefalse001987-07-171987-07-17falsefalsetruetruefalse5truetruetrue0.09770.0977falsefalsefalsetruefalse6truetruetrue0.01370.0137falsefalsefalsetruefalse7truetruetrue0.04370.0437falsefalsefalsetruefalseOthernanafalsefalseAmerican Beacon Large Cap Value Fund Return After Taxes on Distributions and Sale of Fund Shares Institutional Class, American Beacon Large Cap Value Fund10falseRowperiodPeriod*Rowdei_DocumentInformationDocumentAxisAxis*Rowrr_PerformanceMeasureAxisAxis*Rowdei_LegalEntityAxisAxis*Rowrr_ProspectusShareClassAxisAxis*RowunitUnit*duration2010-03-01T00:00:002011-03-01T00:00:00falsefalseRussell 1000 Value Indexdei_DocumentInformationDocumentAxisxbrldihttp://xbrl.org/2006/xbrldiabf809593_RussellThousandValueIndexMemberdei_DocumentInformationDocumentAxisexplicitMembertruefalsePerformance Measurerr_PerformanceMeasureAxisrr_PerformanceMeasureDomainrr_PerformanceMeasureAxisexplicitMemberfalsefalseClass A, C, Institutional, Y, Investor, Advisor and Retirementdei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldiabf809593_ProspectusTwoMemberdei_LegalEntityAxisexplicitMembertruefalseShare Classesrr_ProspectusShareClassAxisrr_ShareClassDomainrr_ProspectusShareClassAxisexplicitMemberRussell 1000 Value IndexPerformance MeasureClass A, C, Institutional, Y, Investor, Advisor and RetirementShare ClassesStandard00truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsefalsefalse2falsetruefalse00Russell 1000® Value IndexRussell 1000® Value Indexfalsefalsefalsetruefalse3falsefalsefalse00Indices (reflects no deduction for fees, expenses or taxes)Indices (reflects no deduction for fees, expenses or taxes)falsefalsefalsetruefalse4falsefalsefalse00falsefalsefalsefalsefalse5truetruetrue0.15510.1551falsefalsefalsetruefalse6truetruetrue0.01280.0128falsefalsefalsetruefalse7truetruetrue0.03260.0326falsefalsefalsetruefalseOthernanafalsefalseRussell 1000 Value Index11falseRowperiodPeriod*Rowdei_DocumentInformationDocumentAxisAxis*Rowrr_PerformanceMeasureAxisAxis*Rowdei_LegalEntityAxisAxis*Rowrr_ProspectusShareClassAxisAxis*RowunitUnit*duration2010-03-01T00:00:002011-03-01T00:00:00falsefalseLipper Large-Cap Value Funds Indexdei_DocumentInformationDocumentAxisxbrldihttp://xbrl.org/2006/xbrldiabf809593_LipperLargeCapValueFundsIndexMemberdei_DocumentInformationDocumentAxisexplicitMembertruefalsePerformance Measurerr_PerformanceMeasureAxisrr_PerformanceMeasureDomainrr_PerformanceMeasureAxisexplicitMemberfalsefalseClass A, C, Institutional, Y, Investor, Advisor and Retirementdei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldiabf809593_ProspectusTwoMemberdei_LegalEntityAxisexplicitMembertruefalseShare Classesrr_ProspectusShareClassAxisrr_ShareClassDomainrr_ProspectusShareClassAxisexplicitMemberLipper Large-Cap Value Funds IndexPerformance MeasureClass A, C, Institutional, Y, Investor, Advisor and RetirementShare ClassesStandard00truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsefalsefalse2falsetruefalse00Lipper Large-Cap Value Funds IndexLipper Large-Cap Value Funds Indexfalsefalsefalsetruefalse3falsefalsefalse00Indices (reflects no deduction for fees, expenses or taxes)Indices (reflects no deduction for fees, expenses or taxes)falsefalsefalsetruefalse4falsefalsefalse00falsefalsefalsefalsefalse5truetruetrue0.13020.1302falsefalsefalsetruefalse6truetruetrue0.01520.0152falsefalsefalsetruefalse7truetruetrue0.01890.0189falsefalsefalsetruefalseOthernanafalsefalseLipper Large-Cap Value Funds Index711Average Annual Total Returns - American Beacon Large Cap Value Fund (Class A, C, Institutional, Y, Investor, Advisor and Retirement) Class A, C, Institutional, Y, Investor, Advisor and RetirementUnKnownUnKnownUnKnownUnKnownfalsetrueColumnprimaryElement*RowperiodPeriod*Rowdei_DocumentInformationDocumentAxisAxis*Rowrr_PerformanceMeasureAxisAxis*Rowdei_LegalEntityAxisAxis*Rowrr_ProspectusShareClassAxisAxis*RowunitUnit*falsefalsefalseOtherus-types:textBlockItemTypestringContains a command for the SEC Viewer for the role corresponding to PerformanceTableData.No authoritative reference available.falsefalsePerformance [Table]1<i>After-tax returns are shown only for Institutional Class shares; after-tax returns for other share classes will vary. 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 taxes. Actual after-tax returns depend on an investor's tax situation and may differ from those shown. If you hold your Fund shares through a tax-deferred arrangement, such as an IRA or a 401(k), the after-tax returns do not apply to your situation.</i>128Risk/Return Summary - American Beacon Large Cap Value Fund (Class A, C, Institutional, Y, Investor, Advisor and Retirement) (American Beacon Large Cap Value Fund, Class A, C, Institutional, Y, Investor, Advisor and Retirement)UnKnownUnKnownUnKnownUnKnownfalsetrue