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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 &#8220;Choosing Your Share Class&#8221; on page 76 of the prospectus and &#8220;Additional Purchase and Sale Information for A Class Shares&#8221; 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. Modify the narrative explanation to state that Fund shares are sold on a national securities exchange at the end of the time periods indicated, and that brokerage commissions for buying and selling Fund shares through a broker are not reflected.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph b -Subsection instructions falsefalseExpense Narrative [Text Block]8false0rr_ShareholderFeesCaptionrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Shareholder Fees (fees paid directly from your investment)falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringShareholder Fees (fees paid directly from your investment).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subsection table falsefalseShareholder Fees Caption [Text]9false0rr_ShareholderFeesTableTextBlockrrfalsenadurationNo definition 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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_DistributionAndService12b1FeesOverAssetstruefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.00250.0025falsefalsefalsetruefalse2truetruetrue0.01000.0100falsefalsefalsetruefalse3truetruetrue0.00000.0000falsefalsefalsetruefalse4truetruetrue0.00000.0000falsefalsefalsetruefalseOthernanafalsefalseDistribution and/or service (12b-1) fees4falseRowprimaryElement*7false0rr_OtherExpensesOverAssetsrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1truetruetrue0.00630.0063falsefalsefalsetruefalse2truetruetrue0.00680.0068falsefalsefalsetruefalse3truetruetrue0.00480.0048falsefalsefalsetruefalse4truetruetrue0.00760.0076falsefalsefalsetruefalseOtherrr: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_OtherExpensesOverAssetstruefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.00630.0063falsefalsefalsetruefalse2truetruetrue0.00680.0068falsefalsefalsetruefalse3truetruetrue0.00480.0048falsefalsefalsetruefalse4truetruetrue0.00760.0076falsefalsefalsetruefalseOthernanafalsefalseOther expenses5falseRowprimaryElement*8false0rr_AcquiredFundFeesAndExpensesOverAssetsrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalsetotallabel1truetruetrue0.00010.0001falsefalsefalsetruefalse2truetruetrue0.00010.0001falsefalsefalsetruefalse3truetruetrue0.00010.0001falsefalsefalsetruefalse4truetruetrue0.00010.0001falsefalsefalsetruefalseOtherrr: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 truefalseAcquired Fund Fees and Expenses0rr_AcquiredFundFeesAndExpensesOverAssetstruefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.00010.0001falsefalsefalsetruefalse2truetruetrue0.00010.0001falsefalsefalsetruefalse3truetruetrue0.00010.0001falsefalsefalsetruefalse4truetruetrue0.00010.0001falsefalsefalsetruefalseOthernanafalsefalseAcquired Fund Fees and Expenses6falseRowprimaryElement*9false0rr_ExpensesOverAssetsrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalsetotallabel1truetruetrue0.01210.0121[2]falsefalsefalsetruefalse2truetruetrue0.02010.0201[2]falsefalsefalsetruefalse3truetruetrue0.00810.0081[2]falsefalsefalsetruefalse4truetruetrue0.01090.0109[2]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 truefalseTotal annual fund operating expenses0rr_ExpensesOverAssetstruefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse[1]1truetruetrue0.01210.0121falsefalsefalsetruefalse2truetruetrue0.02010.0201falsefalsefalsetruefalse3truetruetrue0.00810.0081falsefalsefalsetruefalse4truetruetrue0.01090.0109falsefalsefalsetruefalseOthernanafalsefalseTotal annual fund operating expenses7falseRowprimaryElement*10false0rr_FeeWaiverOrReimbursementOverAssetsrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsetruenegatedtotal1truetruetrue0.00070.0007falsefalsefalsetruefalse2truetruetrue0.00050.0005falsefalsefalsetruefalse3falsetruetrue00falsefalsefalsetruefalse4falsetruetrue00falsefalsefalsetruefalseOtherrr:NonPositivePure4TypepureTotal Annual Fund Operating Expenses. If there were expense reimbursement or fee waiver arrangements that reduced any Fund operating expenses and will continue to reduce them for no less than one year from the effective date of the Fund's registration statement, a Fund may add two captions to the table one caption showing the amount of the expense reimbursement or fee waiver, and a second caption showing the Fund's net expenses after subtracting the fee reimbursement or expense waiver from the total fund operating expenses. The Fund should place these additional captions directly below the "Total Annual Fund Operating Expenses" caption of the table and should use appropriate descriptive captions, such as "Fee Waiver [and/or Expense Reimbursement]" and "Total Annual Fund Operating Expenses After Fee Waiver [and/or Expense Reimbursement]," respectively. If the Fund provides this disclosure, also disclose the period for which the expense reimbursement or fee waiver arrangement is expected to continue, and briefly describe who can terminate the arrangement and under what circumstances.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 11 -Subsection table truefalseExpense Waiver and Reimbursement0rr_FeeWaiverOrReimbursementOverAssetstruefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.00070.0007falsefalsefalsetruefalse2truetruetrue0.00050.0005falsefalsefalsetruefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalseOthernanafalsefalseExpense Waiver and Reimbursement8falseRowprimaryElement*11false0rr_NetExpensesOverAssetsrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalsetotallabel1truetruetrue0.01140.0114[1]falsefalsefalsetruefalse2truetruetrue0.01960.0196[1]falsefalsefalsetruefalse3falsetruetrue00falsefalsefalsetruefalse4falsetruetrue00falsefalsefalsetruefalseOtherrr: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 truefalseTotal annual fund operating expenses after expense waiver and reimbursement0rr_NetExpensesOverAssetstruefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse[2]1truetruetrue0.01140.0114falsefalsefalsetruefalse2truetruetrue0.01960.0196falsefalsefalsetruefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalseOthernanafalsefalseTotal annual fund operating expenses after expense waiver and reimbursement1The 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.2The Manager has contractually agreed to waive and/or reimburse the A Class and C Class of the Fund for Distribution Fees and Other Expenses, as applicable, through February 29, 2012 to the extent that Total Annual Fund Operating Expenses exceed 1.14% for the A Class and 1.96% for the C Class (excluding taxes, brokerage commissions, acquired fund fees and expenses and other extraordinary expenses such as litigation). The contractual expense arrangement can be changed by approval of a majority of the Fund's Board of Trustees. The Manager can be reimbursed by the Fund for any contractual or voluntary fee reductions or expense reimbursements if reimbursement to the Manager (a) occurs within three years after the Manager's own reduction or reimbursement and (b) does not cause the Total Annual Fund Operating Expenses of a class to exceed the percentage limit contractually agreed.48Annual Fund Operating Expenses - American Beacon Retirement Income and Appreciation Fund (Class A, C, Y and Investor) American Beacon Retirement Income and Appreciation Fund Class A, C, Y and InvestorUnKnownUnKnownUnKnownUnKnownfalsetrueColumnperiodPeriod*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&#8217;s operating expenses remain the same. 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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.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1truefalsetrue363363falsefalsefalsetruefalse2truefalsetrue299299falsefalsefalsetruefalse3truefalsetrue8383falsefalsefalsetruefalse4truefalsetrue111111falsefalsefalsetruefalseMonetaryrr: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.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1truefalsetrue618618falsefalsefalsetruefalse2truefalsetrue626626falsefalsefalsetruefalse3truefalsetrue259259falsefalsefalsetruefalse4truefalsetrue347347falsefalsefalsetruefalseMonetaryrr: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.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1truefalsetrue892892falsefalsefalsetruefalse2truefalsetrue10781078falsefalsefalsetruefalse3truefalsetrue450450falsefalsefalsetruefalse4truefalsetrue601601falsefalsefalsetruefalseMonetaryrr: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.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1truefalsetrue16731673falsefalsefalsetruefalse2truefalsetrue23342334falsefalsefalsetruefalse3truefalsetrue10021002falsefalsefalsetruefalse4truefalsetrue13291329falsefalsefalsetruefalseMonetaryrr: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 Retirement Income and Appreciation Funddei_DocumentInformationDocumentAxisxbrldihttp://xbrl.org/2006/xbrldiabf809593_S000001821Memberdei_DocumentInformationDocumentAxisexplicitMemberfalsefalseClass A, C, Y and Investordei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldiabf809593_ProspectusSixMemberdei_LegalEntityAxisexplicitMemberfalsefalseClass A, American Beacon Retirement Income and Appreciation Fundrr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldiabf809593_C000089427Memberrr_ProspectusShareClassAxisexplicitMemberAmerican Beacon Retirement Income and Appreciation FundClass A, C, Y and InvestorClass A, American Beacon Retirement Income and Appreciation FundUSDStandardhttp://www.xbrl.org/2003/iso4217USDiso421700truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00AAfalsefalsefalsetruefalse2truefalsetrue363363falsefalsefalsetruefalse3truefalsetrue618618falsefalsefalsetruefalse4truefalsetrue892892falsefalsefalsetruefalse5truefalsetrue16731673falsefalsefalsetruefalseOthernanafalsefalseClass A, American Beacon Retirement Income and Appreciation Fund2falseRowperiodPeriod*Rowdei_DocumentInformationDocumentAxisAxis*Rowdei_LegalEntityAxisAxis*Rowrr_ProspectusShareClassAxisAxis*RowunitUnit*duration2010-03-01T00:00:002011-03-01T00:00:00falsefalseAmerican Beacon Retirement Income and Appreciation Funddei_DocumentInformationDocumentAxisxbrldihttp://xbrl.org/2006/xbrldiabf809593_S000001821Memberdei_DocumentInformationDocumentAxisexplicitMemberfalsefalseClass A, C, Y and Investordei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldiabf809593_ProspectusSixMemberdei_LegalEntityAxisexplicitMemberfalsefalseC Class, American Beacon Retirement Income and Appreciation Fundrr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldiabf809593_C000092344Memberrr_ProspectusShareClassAxisexplicitMemberAmerican Beacon Retirement Income and Appreciation FundClass A, C, Y and InvestorC Class, American Beacon Retirement Income and Appreciation FundUSDStandardhttp://www.xbrl.org/2003/iso4217USDiso421700truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00CCfalsefalsefalsetruefalse2truefalsetrue299299falsefalsefalsetruefalse3truefalsetrue626626falsefalsefalsetruefalse4truefalsetrue10781078falsefalsefalsetruefalse5truefalsetrue23342334falsefalsefalsetruefalseOthernanafalsefalseC Class, American Beacon Retirement Income and Appreciation Fund3falseRowperiodPeriod*Rowdei_DocumentInformationDocumentAxisAxis*Rowdei_LegalEntityAxisAxis*Rowrr_ProspectusShareClassAxisAxis*RowunitUnit*duration2010-03-01T00:00:002011-03-01T00:00:00falsefalseAmerican Beacon Retirement Income and Appreciation Funddei_DocumentInformationDocumentAxisxbrldihttp://xbrl.org/2006/xbrldiabf809593_S000001821Memberdei_DocumentInformationDocumentAxisexplicitMemberfalsefalseClass A, C, Y and Investordei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldiabf809593_ProspectusSixMemberdei_LegalEntityAxisexplicitMemberfalsefalseClass Y, American Beacon Retirement Income and Appreciation Fundrr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldiabf809593_C000085580Memberrr_ProspectusShareClassAxisexplicitMemberAmerican Beacon Retirement Income and Appreciation FundClass A, C, Y and InvestorClass Y, American Beacon Retirement Income and Appreciation FundUSDStandardhttp://www.xbrl.org/2003/iso4217USDiso421700truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00YYfalsefalsefalsetruefalse2truefalsetrue8383falsefalsefalsetruefalse3truefalsetrue259259falsefalsefalsetruefalse4truefalsetrue450450falsefalsefalsetruefalse5truefalsetrue10021002falsefalsefalsetruefalseOthernanafalsefalseClass Y, American Beacon Retirement Income and Appreciation Fund4falseRowperiodPeriod*Rowdei_DocumentInformationDocumentAxisAxis*Rowdei_LegalEntityAxisAxis*Rowrr_ProspectusShareClassAxisAxis*RowunitUnit*duration2010-03-01T00:00:002011-03-01T00:00:00falsefalseAmerican Beacon Retirement Income and Appreciation Funddei_DocumentInformationDocumentAxisxbrldihttp://xbrl.org/2006/xbrldiabf809593_S000001821Memberdei_DocumentInformationDocumentAxisexplicitMemberfalsefalseClass A, C, Y and Investordei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldiabf809593_ProspectusSixMemberdei_LegalEntityAxisexplicitMemberfalsefalseInvestor Class, American Beacon Retirement Income and Appreciation Fundrr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldiabf809593_C000004774Memberrr_ProspectusShareClassAxisexplicitMemberAmerican Beacon Retirement Income and Appreciation FundClass A, C, Y and InvestorInvestor Class, American Beacon Retirement Income and Appreciation FundUSDStandardhttp://www.xbrl.org/2003/iso4217USDiso421700truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00InvestorInvestorfalsefalsefalsetruefalse2truefalsetrue111111falsefalsefalsetruefalse3truefalsetrue347347falsefalsefalsetruefalse4truefalsetrue601601falsefalsefalsetruefalse5truefalsetrue13291329falsefalsefalsetruefalseOthernanafalsefalseInvestor Class, American Beacon Retirement Income and Appreciation Fund54Expense Example - American Beacon Retirement Income and Appreciation Fund (Class A, C, Y and Investor) American Beacon Retirement Income and Appreciation Fund Class A, C, Y and Investor (USD 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Include the second 1-, 3-, 5-, and 10-year periods and related narrative explanation only if a sales charge (load) or other fee is charged upon redemption.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 2 -Subparagraph 1 -Subsection example falsefalseExpense Example, No Redemption, By Year, Caption [Text]16false0rr_ExpenseExampleNoRedemptionTableTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div> &lt;div style="display:none;"&gt;~ http://americanbeaconfunds.com/role/ExpenseExampleNoRedemptionAmericanBeaconRetirementIncomeAndAppreciationFundClassCYAndInvestorShares column period compact * column rr_ProspectusShareClassAxis compact * row primary compact * row dei_DocumentInformationDocumentAxis compact abf809593_S000001821_Member * row dei_LegalEntityAxis compact abf809593_ProspectusSix_Member * ~&lt;/div&gt; </div>falsefalse<div> &lt;div style="display:none;"&gt;~ http://americanbeaconfunds.com/role/ExpenseExampleNoRedemptionAmericanBeaconRetirementIncomeAndAppreciationFundClassCYAndInvestorShares column period compact * column rr_ProspectusShareClassAxis compact * row primary compact * row dei_DocumentInformationDocumentAxis compact abf809593_S000001821_Member * row dei_LegalEntityAxis compact abf809593_ProspectusSix_Member * ~&lt;/div&gt; </div>truehttp://americanbeaconfunds.com/role/ExpenseExampleNoRedemptionAmericanBeaconRetirementIncomeAndAppreciationFundClassCYAndInvestorSharesfalsefalse0200409 - Schedule - Expense Example, No Redemption - American Beacon Retirement Income and Appreciation Fund (Class A, C, Y and Investor) {Transposed}truefalsefalse1falseColumnprimaryElement*4false0rr_ExpenseExampleNoRedemptionByYearColumnNamerrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1falsefalsefalse00C ClassfalsefalsefalsetruefalseOtherus-types:textBlockItemTypestringYou would pay the following expenses if you did not redeem your shares.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 2 -Subparagraph 1 -Subsection example falsefalseShare classfalseUSDfalsefalse$2falseColumnprimaryElement*5false0rr_ExpenseExampleNoRedemptionYear01rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1truefalsetrue199199falsefalsefalsetruefalseMonetaryrr:NonNegativeMonetaryTypemonetaryYou would pay the following expenses if you did not redeem your shares. Include the second 1-, 3-, 5-, and 10-year periods and related narrative explanation only if a sales charge (load) or other fee is charged upon redemption.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 2 -Subparagraph 1 -Subsection example falsefalse1 YearfalseUSDfalsefalse$3falseColumnprimaryElement*6false0rr_ExpenseExampleNoRedemptionYear03rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1truefalsetrue626626falsefalsefalsetruefalseMonetaryrr:NonNegativeMonetaryTypemonetaryYou would pay the following expenses if you did not redeem your shares. Include the second 1-, 3-, 5-, and 10-year periods and related narrative explanation only if a sales charge (load) or other fee is charged upon redemption.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 2 -Subparagraph 1 -Subsection example falsefalse3 YearsfalseUSDfalsefalse$4falseColumnprimaryElement*7false0rr_ExpenseExampleNoRedemptionYear05rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1truefalsetrue10781078falsefalsefalsetruefalseMonetaryrr:NonNegativeMonetaryTypemonetaryYou would pay the following expenses if you did not redeem your shares. Include the second 1-, 3-, 5-, and 10-year periods and related narrative explanation only if a sales charge (load) or other fee is charged upon redemption.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 4 -Subparagraph f -Subsection instructions falsefalse5 YearsfalseUSDfalsefalse$5falseColumnprimaryElement*8false0rr_ExpenseExampleNoRedemptionYear10rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1truefalsetrue23342334falsefalsefalsetruefalseMonetaryrr:NonNegativeMonetaryTypemonetaryYou would pay the following expenses if you did not redeem your shares. Include the second 1-, 3-, 5-, and 10-year periods and related narrative explanation only if a sales charge (load) or other fee is charged upon redemption.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 4 -Subparagraph f -Subsection instructions falsefalse10 YearsfalseUSDfalsefalse$1falseRowperiodPeriod*Rowdei_DocumentInformationDocumentAxisAxis*Rowdei_LegalEntityAxisAxis*Rowrr_ProspectusShareClassAxisAxis*RowunitUnit*duration2010-03-01T00:00:002011-03-01T00:00:00falsefalseAmerican Beacon Retirement Income and Appreciation Funddei_DocumentInformationDocumentAxisxbrldihttp://xbrl.org/2006/xbrldiabf809593_S000001821Memberdei_DocumentInformationDocumentAxisexplicitMemberfalsefalseClass A, C, Y and Investordei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldiabf809593_ProspectusSixMemberdei_LegalEntityAxisexplicitMemberfalsefalseC Class, American Beacon Retirement Income and Appreciation Fundrr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldiabf809593_C000092344Memberrr_ProspectusShareClassAxisexplicitMemberAmerican Beacon Retirement Income and Appreciation FundClass A, C, Y and InvestorC Class, American Beacon Retirement Income and Appreciation FundUSDStandardhttp://www.xbrl.org/2003/iso4217USDiso421700truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00C ClassC Classfalsefalsefalsetruefalse2truefalsetrue199199falsefalsefalsetruefalse3truefalsetrue626626falsefalsefalsetruefalse4truefalsetrue10781078falsefalsefalsetruefalse5truefalsetrue23342334falsefalsefalsetruefalseOthernanafalsefalseAmerican Beacon Retirement Income and Appreciation Fund Class A, C, Y and Investor C Class, American Beacon Retirement Income and Appreciation Fund51Expense Example, No Redemption - American Beacon Retirement Income and Appreciation Fund (Class A, C, Y and Investor) (USD $)UnKnownUnKnownUnKnownUnKnownfalsetrueColumnprimaryElement*RowperiodPeriod*Rowdei_DocumentInformationDocumentAxisAxis*Rowdei_LegalEntityAxisAxis*Rowrr_ProspectusShareClassAxisAxis*RowunitUnit*falsefalsefalseOtherus-types:textBlockItemTypestringContains a command for the SEC Viewer for the role corresponding to ExpenseExampleNoRedemption.No authoritative reference available.falsefalseExpense Example, No Redemption [Table]17false0rr_PortfolioTurnoverHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Portfolio TurnoverfalsefalsefalsefalsefalseOtherxbrli:stringItemTypestringDisclose 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 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 &#8220;turns over&#8221; 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&#8217;s performance. During the most recent fiscal year, the Fund&#8217;s portfolio turnover rate was 51% 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>Under normal market conditions, approximately 75% of the Fund&#8217;s total assets are invested in fixed-income securities considered by the Manager or sub-advisor to be investment grade at the time of purchase. These securities may include obligations of the U.S. Government, its agencies and instrumentalities, including government-sponsored enterprises (some of which are not backed by the full faith and credit of the U.S. Government); corporate debt securities, such as commercial paper, master demand notes, loan participation interests, medium-term notes and funding agreements, mortgage-backed securities, asset-backed securities and Yankeedollar and Eurodollar bank certificates of deposit, time deposits, bankers&#8217; acceptances and other notes (collectively referred to as &#8220;investment grade fixed-income securities&#8221;). If an investment held by the Fund is downgraded below investment grade, the sub-advisors will take action that they believe to be advantageous to the Fund. In an attempt to enhance the return of the Fund beyond the income offered by investment grade fixed-income securities, the Fund&#8217;s remaining total assets are invested in convertible and non-convertible debt obligations without regard to credit quality, as well as equity securities, warrants and rights. The Fund seeks capital appreciation by investing in debt securities and convertible and equity securities of corporate issuers whose relative value is expected to increase over time.</p><p>The Manager currently allocates the Fund&#8217;s assets between itself and a sub-advisor. The Manager makes investment decisions regarding a portion of the Fund&#8217;s fixed-income securities. In determining which securities to buy and sell, the Manager employs a top-down fixed-income investment strategy, as follows:</p><p> &#8226; Develop an overall investment strategy, including a portfolio duration target, by examining the current trends in the U.S. economy.</p><p> &#8226; Set desired portfolio maturity structure by comparing the differences between corporate and U.S. Government securities of similar duration to judge their potential for optimal return in accordance with the target duration benchmark.</p><p> &#8226; Determine the weightings of each security type by analyzing the difference in yield spreads between corporate and U.S. Government securities.</p><p> &#8226; Select specific debt securities within each security type.</p><p> &#8226; Review and monitor portfolio composition for changes in credit, risk-return profile and comparisons with benchmarks.</p><p> Under normal circumstances, the Manager seeks to maintain a weighted average duration of three to seven years in the investment grade fixed-income portion of the Fund. A duration of &#8220;one year&#8221; means that a security&#8217;s price would be expected to decrease by approximately 1% with a 1% increase in interest rates.</p><p>The sub-advisor invests in convertible securities but may invest up to 60% of its portion of the Fund&#8217;s total assets in non-convertible fixed-income securities. The sub-advisor may invest in investment grade fixed-income securities and securities rated below-investment grade or not rated, commonly referred to as &#8220;high yield bonds&#8221; or &#8220;junk bonds.&#8221; The average term to maturity of the fixed-income securities held in the portion of the Fund&#8217;s portfolio managed by the sub-advisor will typically range from three to ten years.</p><p>The sub-advisor also may invest up to 40% of its portion of the Fund&#8217;s total asset in non-convertible equity securities, common stocks, preferred stocks, American Depositary Receipts and U.S. dollar-denominated foreign stocks traded on U.S. exchanges (collectively referred to as &#8220;stocks&#8221;). Historically, the sub-advisor&#8217;s investment process has led it to invest primarily in convertible securities of small- to mid-capitalization companies that, in its opinion, provide opportunities for long-term capital appreciation. However, the Fund may invest in issuers of all market capitalizations.</p><p>In selecting securities, the sub-advisor may take into consideration such quantitative factors as an issuer&#8217;s present and potential liquidity, profitability, internal capability to generate funds, debt/equity ratio and debt servicing capabilities, and such qualitative factors as an assessment of management, industry characteristics, accounting methodology, and foreign business exposure. The sub-advisor utilizes credit ratings by nationally recognized statistical rating organizations (&#8220;NRSROs&#8221;) as preliminary indicators of investment quality, in addition to its own credit research and analysis.</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>Interest Rate Risk</b></p><p>The Fund is subject to the risk that the market value of the bonds it holds will decline due to rising interest rates. When interest rates rise, the prices of most bonds go down. The price of a bond is also affected by its maturity. Bonds with longer maturities generally have greater sensitivity to changes in interest rates.</p><p><b>Market Risk</b></p><p>The Fund is subject to market risks that can affect the value of its shares. These risks include political, regulatory, market and economic developments, including developments that impact specific economic sectors, industries or segments of the market. For example, market risk involves the possibility that the value of the Fund&#8217;s investments will decline due to drops in the overall high yield bond market. Changes in the economic climate, investor perceptions, and stock market volatility can cause the prices of the Fund&#8217;s investments to decline, regardless of the financial conditions of the issuers held by the Fund. From time to time, certain securities held by the Fund may have limited marketability or contractual limitations on their resale and may be difficult to value and sell at favorable times or prices. If the Fund is forced to sell securities to meet redemption requests, the Fund may have to sell those securities at a loss.</p><p><b>Equity Securities Risk</b></p><p>Equity securities generally are subject to market risk. The Fund&#8217;s investments in equity securities may include common stocks, preferred stocks, rights, warrants and American Depositary Receipts (&#8220;ADRs&#8221;). 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 stock is sensitive to movements in interest rates. Investments in rights and warrants may be more speculative than certain other types of investments because rights and 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 right or a warrant does not necessarily change with the value of the underlying securities, and a right or a warrant ceases to have value if it is not exercised prior to its expiration date. Investments in ADRs 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>Credit Risk</b></p><p>The Fund is subject to the risk that the issuer of a bond will fail to make timely payment of interest or principal. A decline in an issuer&#8217;s credit rating can cause the price of its bonds to go down. For the portion of Fund assets invested in lower-quality debt securities, this risk will be substantial.</p><p><b>Prepayment and Extension Risk</b></p><p>The Fund&#8217;s investments in asset-backed and mortgage-backed securities are subject to the risk that the principal amount of the underlying collateral may be repaid prior to the bond&#8217;s maturity date. If this occurs, no additional interest will be paid on the investment and the Fund may have to invest at a lower rate. Conversely, a decrease in expected prepayments may result in the extension of a security&#8217;s effective maturity and a decline in its price.</p><p><b>Convertible Securities Risk</b></p><p>The value of a convertible security is influenced by both the yield of non-convertible securities of comparable issuers and by the value of the underlying common stock. The investment value of a convertible is strictly based on its yield and tends to decline as interest rates increase. Convertible securities may also be subject to credit risk, market risk and interest rate risk.</p><p><b>High Yield Securities Risk</b></p><p>Investing in high yield, non-investment grade bonds generally involves significantly greater risks of loss of your money than an investment in investment grade bonds. Compared with issuers of investment grade bonds, high yield bonds are more likely to encounter financial difficulties and to be materially affected by these difficulties. Rising interest rates may compound these difficulties and reduce an issuer&#8217;s ability to repay principal and interest obligations. Issuers of lower-rated securities also have a greater risk of default or bankruptcy.</p><p><b>Foreign Exposure Risk</b></p><p> The Fund may invest in securities issued by foreign companies through American Depositary Receipts (&#8220;ADRs&#8221;) and U.S. dollar-denominated foreign stocks traded 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>Small and Medium Capitalization Companies Risk</b></p><p>Investing in the securities of small and medium capitalization companies involves greater risk and the possibility of greater price volatility than investing in larger capitalization and more established companies, since small and medium-sized companies may have limited operating history, product lines, and financial resources, 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.</p><p><b>Securities Selection Risk</b></p><p>Securities selected by the Manager or a sub-advisor for the Fund may not perform to expectations. This could result in the Fund&#8217;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>U.S. Government Securities Risk</b></p><p>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. They are also subject to credit risk and interest rate risk.</p><p><b>Government-Sponsored Enterprises Risk</b></p><p>Securities held by the Fund that are issued by government-sponsored enterprises, such as the Federal National Mortgage Association (&#8220;Fannie Mae&#8221;), the Federal Home Loan Mortgage Corporation (&#8220;Freddie Mac&#8221;), Federal Farm Credit Banks, 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. They are also subject to credit risk and interest rate risk.</p><p><b>Market Events</b></p><p>Turbulence in financial markets and reduced liquidity in 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&#160;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&#8217;s performance has varied from year to year. The table shows how the Fund&#8217;s performance compares to the Barclays Capital U.S. Aggregate Bond Index, which is the Fund&#8217;s primary benchmark. The table also shows how the Fund&#8217;s returns compare to the BofA Merrill Lynch All U.S. Convertibles Index, which tracks the performance of domestic securities of all quality grades that are convertible into U.S. dollar-denominated common stock, ADRs or cash equivalents. The Retirement Income and Appreciation Composite Index is composed of the Linked Barclays Capital U.S. Aggregate Bond Index (75%) and the BofA Merrill Lynch All U.S. Convertibles Index (25%) to reflect the Fund&#8217;s allocation of its assets between fixed-income securities and convertible securities. The Lipper Intermediate Investment Grade Index shows how the Fund&#8217;s performance compares to a composite of mutual funds with similar investment objectives.</p><p>The chart and the table below show the performance of the Fund&#8217;s Investor Class shares for all periods. The Fund began offering Y Class shares on March 1, 2010, A Class shares on May 17, 2010 and C Class shares on September 1, 2010. In the table below, the performance of the Investor Class shares is shown for the Y Class, A Class and C Class shares for all periods prior to the inception of each class. The Investor Class shares class would have had similar returns to the newer classes of shares because the shares are invested in the same portfolio securities. However, because the Investor Class had a different expense structure, its performance was different than the newer classes of shares would have realized in the same period. You may obtain updated performance information on the Fund&#8217;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. If those charges were included, returns of A Class shares would be less than those shown.</p>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringRisk/Return Bar Chart and Table.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subsection b falsefalsePerformance Narrative [Text Block]25false0rr_BarChartHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Calendar year total returns for Investor Class sharesfalsefalsefalsefalsefalseOtherxbrli: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 [Heading]26false0rr_BarChartTableTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div> &lt;div style="display:none;"&gt;~ http://americanbeaconfunds.com/role/AnnualTotalReturnsBarChartAmericanBeaconRetirementIncomeAndAppreciationFundClassCYAndInvestorShares column period compact * column rr_ProspectusShareClassAxis compact * row primary compact * row dei_DocumentInformationDocumentAxis compact abf809593_S000001821_Member * row dei_LegalEntityAxis compact abf809593_ProspectusSix_Member * ~&lt;/div&gt; </div>falsefalseBarChart9.jpg<div> &lt;div style="display:none;"&gt;~ http://americanbeaconfunds.com/role/AnnualTotalReturnsBarChartAmericanBeaconRetirementIncomeAndAppreciationFundClassCYAndInvestorShares column period compact * column rr_ProspectusShareClassAxis compact * row primary compact * row dei_DocumentInformationDocumentAxis compact abf809593_S000001821_Member * row dei_LegalEntityAxis compact abf809593_ProspectusSix_Member * ~&lt;/div&gt; </div>falsehttp://americanbeaconfunds.com/role/AnnualTotalReturnsBarChartAmericanBeaconRetirementIncomeAndAppreciationFundClassCYAndInvestorSharesfalsefalse0200509 - Schedule - Annual Total Returns (Bar Chart) - American Beacon Retirement Income and Appreciation Fund (Class A, C, Y and Investor)truefalsefalse1falseColumnperiodPeriod*Columndei_DocumentInformationDocumentAxisAxis*Columndei_LegalEntityAxisAxis*Columnrr_ProspectusShareClassAxisAxis*ColumnunitUnit*duration2010-03-01T00:00:002011-03-01T00:00:00falsefalseAmerican Beacon Retirement Income and Appreciation Funddei_DocumentInformationDocumentAxisxbrldihttp://xbrl.org/2006/xbrldiabf809593_S000001821Memberdei_DocumentInformationDocumentAxisexplicitMemberfalsefalseClass A, C, Y and Investordei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldiabf809593_ProspectusSixMemberdei_LegalEntityAxisexplicitMemberfalsefalseInvestor Class, American Beacon Retirement Income and Appreciation Fundrr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldiabf809593_C000004774Memberrr_ProspectusShareClassAxisexplicitMemberAmerican Beacon Retirement Income and Appreciation FundClass A, C, Y and InvestorInvestor Class, American Beacon Retirement Income and Appreciation FundUSDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170falseUSDfalsefalse$1falseRowprimaryElement*4false0rr_AnnualReturn2004rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1truetruefalse0.04390.0439falsefalsefalsetruefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph instructions -Clause 3 -Exhibit a -Subsection b falsefalse040rr_AnnualReturn2004truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.04390.0439falsefalsefalsetruefalseOthernanafalsefalse042falseRowprimaryElement*5false0rr_AnnualReturn2005rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1truetruefalse0.01320.0132falsefalsefalsetruefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalse050rr_AnnualReturn2005truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.01320.0132falsefalsefalsetruefalseOthernanafalsefalse053falseRowprimaryElement*6false0rr_AnnualReturn2006rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1truetruefalse0.05600.0560falsefalsefalsetruefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalse060rr_AnnualReturn2006truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.05600.0560falsefalsefalsetruefalseOthernanafalsefalse064falseRowprimaryElement*7false0rr_AnnualReturn2007rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1truetruefalse0.06670.0667falsefalsefalsetruefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph instructions -Clause 3 -Exhibit a -Subsection b falsefalse070rr_AnnualReturn2007truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.06670.0667falsefalsefalsetruefalseOthernanafalsefalse075falseRowprimaryElement*8false0rr_AnnualReturn2008rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1truetruefalse-0.0437-0.0437falsefalsefalsetruefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. 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Investordei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldiabf809593_ProspectusSixMemberdei_LegalEntityAxisexplicitMembertruefalseShare Classesrr_ProspectusShareClassAxisrr_ShareClassDomainrr_ProspectusShareClassAxisexplicitMemberLinked Barclays Capital U.S. Aggregate Bond IndexPerformance MeasureClass A, C, Y and InvestorShare ClassesStandard00truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsefalsefalse2falsetruefalse00Linked Barclays Capital U.S. Aggregate Bond IndexLinked Barclays Capital U.S. Aggregate Bond Indexfalsefalsefalsetruefalse3falsefalsefalse00Indices (reflects no deduction of fees, expenses or taxes)Indices (reflects no deduction of fees, expenses or taxes)falsefalsefalsetruefalse4falsefalsefalse00falsefalsefalsefalsefalse5truetruetrue0.06540.0654falsefalsefalsetruefalse6truetruetrue0.05760.0576falsefalsefalsetruefalse7truetruetrue0.04440.0444falsefalsefalsetruefalseOthernanafalsefalseLinked Barclays Capital U.S. Aggregate Bond Index9falseRowperiodPeriod*Rowdei_DocumentInformationDocumentAxisAxis*Rowrr_PerformanceMeasureAxisAxis*Rowdei_LegalEntityAxisAxis*Rowrr_ProspectusShareClassAxisAxis*RowunitUnit*duration2010-03-01T00:00:002011-03-01T00:00:00falsefalseBofA Merrill Lynch All U.S. Convertibles Indexdei_DocumentInformationDocumentAxisxbrldihttp://xbrl.org/2006/xbrldiabf809593_BofaMerrillLynchAllUSConvertiblesIndexMemberdei_DocumentInformationDocumentAxisexplicitMembertruefalsePerformance Measurerr_PerformanceMeasureAxisrr_PerformanceMeasureDomainrr_PerformanceMeasureAxisexplicitMemberfalsefalseClass A, C, Y and Investordei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldiabf809593_ProspectusSixMemberdei_LegalEntityAxisexplicitMembertruefalseShare Classesrr_ProspectusShareClassAxisrr_ShareClassDomainrr_ProspectusShareClassAxisexplicitMemberBofA Merrill Lynch All U.S. Convertibles IndexPerformance MeasureClass A, C, Y and InvestorShare ClassesStandard00truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsefalsefalse2falsetruefalse00BofA Merrill Lynch All U.S. Convertibles IndexBofA Merrill Lynch All U.S. Convertibles Indexfalsefalsefalsetruefalse3falsefalsefalse00Indices (reflects no deduction of fees, expenses or taxes)Indices (reflects no deduction of fees, expenses or taxes)falsefalsefalsetruefalse4falsefalsefalse00falsefalsefalsefalsefalse5truetruetrue0.16770.1677falsefalsefalsetruefalse6truetruetrue0.05710.0571falsefalsefalsetruefalse7truetruetrue0.06720.0672falsefalsefalsetruefalseOthernanafalsefalseBofA Merrill Lynch All U.S. Convertibles Index10falseRowperiodPeriod*Rowdei_DocumentInformationDocumentAxisAxis*Rowrr_PerformanceMeasureAxisAxis*Rowdei_LegalEntityAxisAxis*Rowrr_ProspectusShareClassAxisAxis*RowunitUnit*duration2010-03-01T00:00:002011-03-01T00:00:00falsefalseRetirement Income and Appreciation Composite Indexdei_DocumentInformationDocumentAxisxbrldihttp://xbrl.org/2006/xbrldiabf809593_RetirementIncomeAndAppreciationCompositeIndexMemberdei_DocumentInformationDocumentAxisexplicitMembertruefalsePerformance Measurerr_PerformanceMeasureAxisrr_PerformanceMeasureDomainrr_PerformanceMeasureAxisexplicitMemberfalsefalseClass A, C, Y and Investordei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldiabf809593_ProspectusSixMemberdei_LegalEntityAxisexplicitMembertruefalseShare Classesrr_ProspectusShareClassAxisrr_ShareClassDomainrr_ProspectusShareClassAxisexplicitMemberRetirement Income and Appreciation Composite IndexPerformance MeasureClass A, C, Y and InvestorShare ClassesStandard00truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsefalsefalse2falsetruefalse00Retirement Income and Appreciation Composite IndexRetirement Income and Appreciation Composite Indexfalsefalsefalsetruefalse3falsefalsefalse00Indices (reflects no deduction of fees, expenses or taxes)Indices (reflects no deduction of fees, expenses or taxes)falsefalsefalsetruefalse4falsefalsefalse00falsefalsefalsefalsefalse5truetruetrue0.09190.0919falsefalsefalsetruefalse6truetruetrue0.05980.0598falsefalsefalsetruefalse7truetruetrue0.05180.0518falsefalsefalsetruefalseOthernanafalsefalseRetirement Income and Appreciation Composite Index11falseRowperiodPeriod*Rowdei_DocumentInformationDocumentAxisAxis*Rowrr_PerformanceMeasureAxisAxis*Rowdei_LegalEntityAxisAxis*Rowrr_ProspectusShareClassAxisAxis*RowunitUnit*duration2010-03-01T00:00:002011-03-01T00:00:00falsefalseLipper Intermediate Investment Grade Indexdei_DocumentInformationDocumentAxisxbrldihttp://xbrl.org/2006/xbrldiabf809593_LipperIntermediateInvestmentGradeIndexMemberdei_DocumentInformationDocumentAxisexplicitMembertruefalsePerformance Measurerr_PerformanceMeasureAxisrr_PerformanceMeasureDomainrr_PerformanceMeasureAxisexplicitMemberfalsefalseClass A, C, Y and Investordei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldiabf809593_ProspectusSixMemberdei_LegalEntityAxisexplicitMembertruefalseShare Classesrr_ProspectusShareClassAxisrr_ShareClassDomainrr_ProspectusShareClassAxisexplicitMemberLipper Intermediate Investment Grade IndexPerformance MeasureClass A, C, Y and InvestorShare ClassesStandard00truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsefalsefalse2falsetruefalse00Lipper Intermediate Investment Grade IndexLipper Intermediate Investment Grade Indexfalsefalsefalsetruefalse3falsefalsefalse00Indices (reflects no deduction for fees, expenses or taxes)Indices (reflects no deduction for fees, expenses or taxes)falsefalsefalsetruefalse4falsefalsefalse00falsefalsefalsefalsefalse5truetruetrue0.08620.0862falsefalsefalsetruefalse6truetruetrue0.05440.0544falsefalsefalsetruefalse7truetruetrue0.04560.0456falsefalsefalsetruefalseOthernanafalsefalseLipper Intermediate Investment Grade Index711Average Annual Total Returns - American Beacon Retirement Income and Appreciation Fund (Class A, C, Y and Investor) Class A, C, Y and InvestorUnKnownUnKnownUnKnownUnKnownfalsetrueColumnprimaryElement*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 Retirement Income and Appreciation Fund (Class A, C, Y and Investor) (American Beacon Retirement Income and Appreciation Fund, Class A, C, Y and Investor)UnKnownUnKnownUnKnownUnKnownfalsetrue