485BPOS

As filed with the Securities and Exchange Commission on March 21, 2013

1933 Act File No. 033-11387

1940 Act File No. 811-04984

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C.  20549

FORM N-1A

REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933			[ X ]
	Pre-Effective Amendment No. ____	[     ]
	Post-Effective Amendment No. 154	[ X ]
and/or
REGISTRATION STATEMENT UNDER THE INVESTMENT COMPANY ACT OF 1940			[ X ]
	Amendment No. 153	[ X ]
(Check appropriate box or boxes.)

AMERICAN BEACON FUNDS

(Exact Name of Registrant as Specified in Charter)

4151 Amon Carter Boulevard, MD 2450

Fort Worth, Texas  76155

(Address of Principal Executive Offices) (Zip Code)

Registrant's Telephone Number, including Area Code: (817) 391-6100

Gene L. Needles, Jr., President 4151 Amon Carter Boulevard MD 2450 Fort Worth, Texas  76155 (Name and Address of Agent for Service)   With copies to: Kathy K. Ingber, Esq. K&L Gates LLP 1601 K Street, NW Washington, D.C. 20006-1601  

It is proposed that this filing will become effective (check appropriate box)

[  X  ]	immediately upon filing pursuant to paragraph (b)
[       ]	on (date) pursuant to paragraph (b)
[       ]	60 days after filing pursuant to paragraph (a)(1)
[       ]	on (date) pursuant to paragraph (a)(1)
[       ]	75 days after filing pursuant to paragraph (a)(2)
[       ]	on (date) pursuant to paragraph (a)(2) of Rule 485

If appropriate, check the following box:

[    ] This post-effective amendment designates a new effective date for a previously filed post-effective amendment.

This amendment is being filed solely to submit exhibits containing risk/return summary information in interactive data format that is identical to the risk/return information contained in the Registrant’s Prospectus for the Institutional Class, Investor Class, AMR Class, Advisor Class, Y Class, A Class and C Class of American Beacon Balanced Fund and American Beacon Mid-Cap Value Fund, Institutional Class, Investor Class, AMR Class, Advisor Class, Retirement Class, Y Class, A Class and C Class of American Beacon Large Cap Value Fund, American Beacon Small Cap Value Fund and American Beacon International Equity Fund, Investor Class and Y Class of American Beacon Small Cap Value II Fund, Institutional Class, Investor Class, AMR Class, Y Class, A Class and C Class of American Beacon Emerging Markets Fund and American Beacon High Yield Bond Fund, Investor Class, Y Class, A Class and C Class of American Beacon Retirement Income and Appreciation Fund and Institutional Class, Investor Class, Y Class, A Class and C Class of American Beacon Intermediate Bond Fund and American Beacon Short-Term Bond Fund, which was filed with the Securities and Exchange Commission in Post-Effective Amendment No. 153 to the Registrant’s registration statement on February 28, 2013.

SIGNATURES

Pursuant to the requirements of the Securities Act of 1933, as amended (“1933 Act”), and the Investment Company Act of 1940, as amended, the Registrant represents that this Amendment meets all the requirements for effectiveness pursuant to Rule 485(b) under the 1933 Act and has duly caused this Post-Effective Amendment No. 154 to its Registration Statement on Form N-1A to be signed on its behalf by the undersigned, thereunto duly authorized, in the City of Fort Worth and the State of Texas, on March 21, 2013.

AMERICAN BEACON FUNDS
By:	/s/ Gene L. Needles, Jr.
	Gene L. Needles, Jr.
	President

Pursuant to the requirements of the 1933 Act, this Post-Effective Amendment No. 154 Registration Statement has been signed below by the following persons in the capacities and on the dates indicated.

Signature	Title	Date
/s/ Gene L. Needles, Jr.	President (Principal Executive Officer)	March 21, 2013
Gene L. Needles, Jr.
/s/ Melinda G. Heika	Treasurer (Principal Financial Officer)	March 21, 2013
Melinda G. Heika
Gerard J. Arpey*	Trustee	March 21, 2013
Gerard J. Arpey
W. Humphrey Bogart*	Trustee	March 21, 2013
W. Humphrey Bogart
Brenda A. Cline*	Trustee	March 21, 2013
Brenda A. Cline
Eugene J. Duffy*	Trustee	March 21, 2013
Eugene J. Duffy
Thomas M. Dunning*	Trustee	March 21, 2013
Thomas M. Dunning
Alan D. Feld*	Trustee	March 21, 2013
Alan D. Feld
Richard A. Massman*	Chairman and Trustee	March 21, 2013
Richard A. Massman
Barbara J. McKenna*	Trustee	March 21, 2013
Barbara J. McKenna
R. Gerald Turner*	Trustee	March 21, 2013
R. Gerald Turner
Paul J. Zucconi*	Trustee	March 21, 2013
Paul J. Zucconi

*By	/s/ Rosemary K. Behan
	Rosemary K. Behan, Attorney-in-Fact

EXHIBIT INDEX

Type	Description
EX-101.INS	XBRL Instance Document
EX-101.SCH	XBRL Taxonomy Extension Schema Document
EX-101.DEF	XBRL Taxonomy Extension Definition Linkbase Document
EX-101.LAB	XBRL Taxonomy Extension Labels Linkbase Document
EX-101.PRE	XBRL Taxonomy Extension Presentation Linkbase Document

 POWER OF ATTORNEY

I, Gerard J. Arpey, Trustee of the American Beacon Funds and the American Beacon Select Funds (collectively, the “Trusts”), hereby constitute and appoint Gene L. Needles, Jr., Rosemary K. Behan, and Melinda G. Heika, each of them with the power to act without any other and with full power of substitution, my true and lawful attorney with full power to sign for me in my capacity as Trustee for the Trusts any Registration Statement on Form N-1A under the Securities Act of 1933 and/or the Investment Company Act of 1940 and any amendments thereto of the Trusts and all instruments necessary or desirable in connection therewith, hereby ratifying and confirming my signature as it may be signed by said attorney to any and all amendments to said Registration Statements.

Pursuant to the requirements of the Securities Act of 1933, as amended, this instrument has been signed below by the following in my capacity and on the 9th day of August, 2012.

/s/ Gerard J. Arpey                                   

Gerard J. Arpey, Trustee

POWER OF ATTORNEY

I, W. Humphrey Bogart, Trustee of the American Beacon Funds and the American Beacon Select Funds (collectively, the “Trusts”), hereby constitute and appoint Gene L. Needles, Jr., Rosemary K. Behan, and Melinda G. Heika, each of them with the power to act without any other and with full power of substitution, my true and lawful attorney with full power to sign for me in my capacity as Trustee for the Trusts any Registration Statement on Form N-1A under the Securities Act of 1933 and/or the Investment Company Act of 1940 and any amendments thereto of the Trusts and all instruments necessary or desirable in connection therewith, hereby ratifying and confirming my signature as it may be signed by said attorney to any and all amendments to said Registration Statements.

Pursuant to the requirements of the Securities Act of 1933, as amended, this instrument has been signed below by the following in my capacity and on the 9th day of August, 2012.

/s/ W. Humphrey Bogart                                   

W. Humphrey Bogart, Trustee

POWER OF ATTORNEY

I, Brenda A. Cline, Trustee of the American Beacon Funds and the American Beacon Select Funds (collectively, the “Trusts”), hereby constitute and appoint Gene L. Needles, Jr., Rosemary K. Behan, and Melinda G. Heika, each of them with the power to act without any other and with full power of substitution, my true and lawful attorney with full power to sign for me in my capacity as Trustee for the Trusts any Registration Statement on Form N-1A under the Securities Act of 1933 and/or the Investment Company Act of 1940 and any amendments thereto of the Trusts and all instruments necessary or desirable in connection therewith, hereby ratifying and confirming my signature as it may be signed by said attorney to any and all amendments to said Registration Statements.

Pursuant to the requirements of the Securities Act of 1933, as amended, this instrument has been signed below by the following in my capacity and on the 9th day of August, 2012.

/s/ Brenda A. Cline

Brenda A. Cline, Trustee

POWER OF ATTORNEY

I, Eugene J. Duffy, Trustee of the American Beacon Funds and the American Beacon Select Funds (collectively, the “Trusts”), hereby constitute and appoint Gene L. Needles, Jr., Rosemary K. Behan, and Melinda G. Heika, each of them with the power to act without any other and with full power of substitution, my true and lawful attorney with full power to sign for me in my capacity as Trustee for the Trusts any Registration Statement on Form N-1A under the Securities Act of 1933 and/or the Investment Company Act of 1940 and any amendments thereto of the Trusts and all instruments necessary or desirable in connection therewith, hereby ratifying and confirming my signature as it may be signed by said attorney to any and all amendments to said Registration Statements.

Pursuant to the requirements of the Securities Act of 1933, as amended, this instrument has been signed below by the following in my capacity and on the 9th day of August, 2012.

/s/ Eugene J. Duffy

Eugene J. Duffy, Trustee

POWER OF ATTORNEY

I, Thomas M. Dunning, Trustee of the American Beacon Funds and the American Beacon Select Funds (collectively, the “Trusts”), hereby constitute and appoint Gene L. Needles, Jr., Rosemary K. Behan, and Melinda G. Heika, each of them with the power to act without any other and with full power of substitution, my true and lawful attorney with full power to sign for me in my capacity as Trustee for the Trusts any Registration Statement on Form N-1A under the Securities Act of 1933 and/or the Investment Company Act of 1940 and any amendments thereto of the Trusts and all instruments necessary or desirable in connection therewith, hereby ratifying and confirming my signature as it may be signed by said attorney to any and all amendments to said Registration Statements.

Pursuant to the requirements of the Securities Act of 1933, as amended, this instrument has been signed below by the following in my capacity and on the 9th day of August, 2012.

/s/ Thomas M. Dunning

Thomas M. Dunning, Trustee

POWER OF ATTORNEY

I, Alan D. Feld, Trustee of the American Beacon Funds and the American Beacon Select Funds (collectively, the “Trusts”), hereby constitute and appoint Gene L. Needles, Jr., Rosemary K. Behan, and Melinda G. Heika, each of them with the power to act without any other and with full power of substitution, my true and lawful attorney with full power to sign for me in my capacity as Trustee for the Trusts any Registration Statement on Form N-1A under the Securities Act of 1933 and/or the Investment Company Act of 1940 and any amendments thereto of the Trusts and all instruments necessary or desirable in connection therewith, hereby ratifying and confirming my signature as it may be signed by said attorney to any and all amendments to said Registration Statements.

Pursuant to the requirements of the Securities Act of 1933, as amended, this instrument has been signed below by the following in my capacity and on the 9th day of August, 2012.

/s/ Alan D. Feld

Alan D. Feld, Trustee

POWER OF ATTORNEY

I, Richard A. Massman, Trustee of the American Beacon Funds and the American Beacon Select Funds (collectively, the “Trusts”), hereby constitute and appoint Gene L. Needles, Jr., Rosemary K. Behan, and Melinda G. Heika, each of them with the power to act without any other and with full power of substitution, my true and lawful attorney with full power to sign for me in my capacity as Trustee for the Trusts any Registration Statement on Form N-1A under the Securities Act of 1933 and/or the Investment Company Act of 1940 and any amendments thereto of the Trusts and all instruments necessary or desirable in connection therewith, hereby ratifying and confirming my signature as it may be signed by said attorney to any and all amendments to said Registration Statements.

Pursuant to the requirements of the Securities Act of 1933, as amended, this instrument has been signed below by the following in my capacity and on the 9th day of August, 2012.

/s/ Richard A. Massman

Richard A. Massman, Trustee

POWER OF ATTORNEY

I, Barbara J. McKenna, Trustee of the American Beacon Funds and the American Beacon Select Funds (collectively, the “Trusts”), hereby constitute and appoint Gene L. Needles, Jr., Rosemary K. Behan, and Melinda G. Heika, each of them with the power to act without any other and with full power of substitution, my true and lawful attorney with full power to sign for me in my capacity as Trustee for the Trusts any Registration Statement on Form N-1A under the Securities Act of 1933 and/or the Investment Company Act of 1940 and any amendments thereto of the Trusts and all instruments necessary or desirable in connection therewith, hereby ratifying and confirming my signature as it may be signed by said attorney to any and all amendments to said Registration Statements.

Pursuant to the requirements of the Securities Act of 1933, as amended, this instrument has been signed below by the following in my capacity and on the 9th day of August, 2012.

/s/ Barbara J. McKenna

Barbara J. McKenna, Trustee

POWER OF ATTORNEY

I, R. Gerald Turner, Trustee of the American Beacon Funds and the American Beacon Select Funds (collectively, the “Trusts”), hereby constitute and appoint Gene L. Needles, Jr., Rosemary K. Behan, and Melinda G. Heika, each of them with the power to act without any other and with full power of substitution, my true and lawful attorney with full power to sign for me in my capacity as Trustee for the Trusts any Registration Statement on Form N-1A under the Securities Act of 1933 and/or the Investment Company Act of 1940 and any amendments thereto of the Trusts and all instruments necessary or desirable in connection therewith, hereby ratifying and confirming my signature as it may be signed by said attorney to any and all amendments to said Registration Statements.

Pursuant to the requirements of the Securities Act of 1933, as amended, this instrument has been signed below by the following in my capacity and on the 9th day of August, 2012.

/s/ R. Gerald Turner

R. Gerald Turner, Trustee

POWER OF ATTORNEY

I, Paul J. Zucconi, Trustee of the American Beacon Funds and the American Beacon Select Funds (collectively, the “Trusts”), hereby constitute and appoint Gene L. Needles, Jr., Rosemary K. Behan, and Melinda G. Heika, each of them with the power to act without any other and with full power of substitution, my true and lawful attorney with full power to sign for me in my capacity as Trustee for the Trusts any Registration Statement on Form N-1A under the Securities Act of 1933 and/or the Investment Company Act of 1940 and any amendments thereto of the Trusts and all instruments necessary or desirable in connection therewith, hereby ratifying and confirming my signature as it may be signed by said attorney to any and all amendments to said Registration Statements.

Pursuant to the requirements of the Securities Act of 1933, as amended, this instrument has been signed below by the following in my capacity and on the 9th day of August, 2012.

/s/ Paul J. Zucconi

Paul J. Zucconi, Trustee

XML

Label

Element

Value

Risk/Return:

rr_RiskReturnAbstract

Risk/Return [Heading]

rr_RiskReturnHeading

American Beacon Small Cap Value II Fund

Objective [Heading]

rr_ObjectiveHeading

Investment Objective

Objective, Primary [Text Block]

rr_ObjectivePrimaryTextBlock

The Fund’s investment objective is long-term capital appreciation.

Expense [Heading]

rr_ExpenseHeading

Fees and Expenses of the Fund

Expense Narrative [Text Block]

rr_ExpenseNarrativeTextBlock

This table describes the fees and expenses that you may pay if you buy and hold shares of the Fund.  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 101 of the Prospectus and “Additional Purchase and Sale Information for A Class Shares” on page 78 of the statement of additional information.

Operating Expenses Caption [Text]

rr_OperatingExpensesCaption

Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)

Fee Waiver or Reimbursement over Assets, Date of Termination

rr_FeeWaiverOrReimbursementOverAssetsDateOfTermination

2014-02-28

Portfolio Turnover [Heading]

rr_PortfolioTurnoverHeading

Portfolio Turnover

Portfolio Turnover [Text Block]

rr_PortfolioTurnoverTextBlock

The Fund pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when fund shares are held in a taxable account. These costs, which are not reflected in annual fund operating expenses or in the example, affect the Fund’s performance.

During the most recent fiscal year, the Fund’s portfolio turnover rate was 82% of the average value of its portfolio.

Portfolio Turnover, Rate

rr_PortfolioTurnoverRate

82.00%

Expense Breakpoint Discounts [Text]

rr_ExpenseBreakpointDiscounts

You may qualify for sales discounts if you and your eligible family members invest, or agree to invest in the future, at least $50,000 in the A Class shares of the American Beacon Funds.

Expense Breakpoint, Minimum Investment Required [Amount]

rr_ExpenseBreakpointMinimumInvestmentRequiredAmount

$ 50,000

Expenses Not Correlated to Ratio Due to Acquired Fund Fees [Text]

rr_ExpensesNotCorrelatedToRatioDueToAcquiredFundFees

The Total Annual Fund Operating Expenses do not correlate to the ratio of expenses to average net assets provided in the Fund's Financial Highlights table, which reflects the operating expenses of the Fund and does not include Acquired Fund Fees and Expenses.

Expense Example [Heading]

rr_ExpenseExampleHeading

Example

Expense Example Narrative [Text Block]

rr_ExpenseExampleNarrativeTextBlock

This Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return each year and that the Fund’s operating expenses remain the same. Although your actual costs may be higher or lower, based on these assumptions, your costs would be:

Strategy [Heading]

rr_StrategyHeading

Principal Investment Strategies

Strategy Narrative [Text Block]

rr_StrategyNarrativeTextBlock

Under normal circumstances, at least 80% of the Fund’s net assets (plus the amount of any borrowings for investment purposes) are invested in equity securities of small market capitalization companies. These companies have market capitalizations of $4 billion or less at the time of investment. The Fund’s investments may include common stocks, preferred stocks, securities convertible into common stocks, real estate investment trusts, U.S. dollar-denominated foreign securities trading on U.S. exchanges and U.S. dollar-denominated American Depositary Receipts.

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 reducing volatility and downside risk.

The sub-advisors select stocks that, in their opinion, have most or all of the following characteristics (relative to the Russell 2000(R) Index):

Ø above-average earnings growth potential,

Ø below-average price to earnings ratio, and

Ø below-average price to book value ratio.

Each of the 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 sub-advisors typically seek to invest in companies that they believe are undervalued at the time of purchase. The decision to sell a security is typically based on the belief that the company is no longer considered undervalued or shows deteriorating fundamentals, or that better investment opportunities exist.

The Fund may invest cash balances in money market funds and may purchase and sell futures contracts to gain market exposure on cash balances or reduce market exposure in anticipation of liquidity needs.

The Fund may lend its securities to broker-dealers and other institutions to earn additional income.

Risk [Heading]

rr_RiskHeading

Principal Risks

Risk Narrative [Text Block]

rr_RiskNarrativeTextBlock

There is no assurance that the Fund will achieve its investment objective and you could lose part or all of your investment in the Fund. The Fund is not designed for investors who need an assured level of income and is intended to be a long-term investment. The Fund is not a complete investment program and may not be appropriate for all investors. Investors should carefully consider their own investment goals and risk tolerance before investing in the Fund. The principal risks of investing in the Fund are:

Equity Investments Risk

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 Depositarinvesting in the Fund arey Receipts (“ADRs”) and U.S. dollar-denominated foreign stocks traded on U.S. exchanges. Such investments may expose the Fund to additional risks.

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. 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.

Foreign Exposure Risk

The Fund may invest in securities issued by foreign companies through ADRs and U.S. dollar-denominated foreign stocks trading on U.S. exchanges. ADRs 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.  Non-U.S. investments carry potential risks not associated with U.S. investments. Such risks include, but are not limited to: (1) currency exchange rate fluctuations, (2) political and financial instability, (3) less liquidity and greater volatility, (4) lack of uniform accounting, auditing and financial reporting standards, (5) increased price volatility, and (6) less government regulation and supervision of foreign stock exchanges, brokers and listed companies.

Futures Contracts Risk

Futures contracts are a type of derivative investment. A derivative refers to any financial instrument whose value is derived, at least in part, from the price of another security or a specified index, asset or rate. The use of derivatives presents risks different from, and possibly greater than, the risks associated with investing directly in traditional securities. Gains or losses in a derivative may be magnified and may be much greater than the derivatives original cost.

There may be an imperfect correlation between the changes in market value of the securities held by the Fund and the prices of futures contracts. There may not be a liquid secondary market for the futures contract. When the Fund purchases or sells a futures contract, it is subject to daily variation margin calls that could be substantial in the event of adverse price movements. If the Fund has insufficient cash to meet daily variation margin requirements, it might need to sell securities at a time when such sales are disadvantageous.

Investment Risk

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. Therefore, you may lose money by investing in the Fund.

Issuer Risk

The value of a security may decline for a number of reasons which directly relate to the issuer, such as management performance, financial leverage and reduced demand for the issuer’s goods or services, as well as the historical and prospective earnings of the issuer and the value of its assets.

Market Events Risk

Turbulence in financial markets and reduced liquidity in equity, credit and fixed-income markets may negatively affect many issuers worldwide which could adversely affect the Fund.

Market Risk

Market risks, including political, regulatory, market and economic developments, and developments that impact specific economic sectors, industries or segments of the market, can affect the value of the Fund’s shares. The Fund’s equity investments are subject to stock market risk, which involves the possibility that the value of the Fund’s investments in stocks will decline due to drops in the stock market. 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 holdings to meet redemption requests or other cash needs, the Fund may have to sell them at a loss.

Securities Lending Risk

To the extent the Fund lends its securities, it may be subject to the following risks. Borrowers of the Fund’s securities typically provide collateral in the form of cash that is reinvested in securities. The securities in which the collateral is invested may not perform sufficiently to cover the return collateral payments owed to borrowers. In addition, delays may occur in the recovery of securities from borrowers, which could interfere with the Fund’s ability to vote proxies or to settle transactions.

Securities Selection Risk

Securities selected by the Manager or 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.

Small Capitalization Companies Risk

Investing in the securities of small capitalization companies involves greater risk and the possibility of greater price volatility than investing in larger capitalization and more established companies, since small 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.

Value Stocks Risk

Value stocks are subject to the risk that their intrinsic value may never be realized by the market or that their prices may 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.

Risk Lose Money [Text]

rr_RiskLoseMoney

There is no assurance that the Fund will achieve its investment objective and you could lose part or all of your investment in the Fund.

Risk Not Insured Depository Institution [Text]

rr_RiskNotInsuredDepositoryInstitution

An investment in the Fund is not a deposit of a bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.

Bar Chart and Performance Table [Heading]

rr_BarChartAndPerformanceTableHeading

Fund Performance

Performance Narrative [Text Block]

rr_PerformanceNarrativeTextBlock

The bar chart and table below provide an indication of risk by showing 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® Small-Cap Value Funds Index, a composite of mutual funds comparable to the Fund.

The chart and the table below show the performance of the Fund’s Investor Class shares for all periods. The Fund began operations of Investor Class and Y Class shares on November 15, 2011.  You may obtain updated performance information on the Fund’s website at www.americanbeaconfunds.com. Past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future.

Performance Information Illustrates Variability of Returns [Text]

rr_PerformanceInformationIllustratesVariabilityOfReturns

The bar chart and table below provide an indication of risk by showing how the Fund's performance has varied from year to year.

Performance Availability Website Address [Text]

rr_PerformanceAvailabilityWebSiteAddress

www.americanbeaconfunds.com

Performance Past Does Not Indicate Future [Text]

rr_PerformancePastDoesNotIndicateFuture

Past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future.

Bar Chart [Heading]

rr_BarChartHeading

Calendar year total returns for Investor Class shares

Bar Chart Narrative [Text Block]

rr_BarChartNarrativeTextBlock

Total Return for the Calendar Year Ended 12/31 of each Year

Bar Chart Does Not Reflect Sales Loads [Text]

rr_BarChartDoesNotReflectSalesLoads

The bar chart and table below provide an indication of risk by showing how the Fund's performance has varied from year to year.

Bar Chart Closing [Text Block]

rr_BarChartClosingTextBlock

Highest Quarterly Return:	10.71%
(11/15/11 through 12/31/12)	(1st Quarter 2012)
Lowest Quarterly Return:	-5.17%
(11/15/11 through 12/31/12)	(2nd Quarter 2012)

Highest Quarterly Return, Label

rr_HighestQuarterlyReturnLabel

Highest Quarterly Return:

Highest Quarterly Return, Date

rr_BarChartHighestQuarterlyReturnDate

Mar. 31, 2012

Highest Quarterly Return

rr_BarChartHighestQuarterlyReturn

10.71%

Lowest Quarterly Return, Label

rr_LowestQuarterlyReturnLabel

Lowest Quarterly Return:

Lowest Quarterly Return, Date

rr_BarChartLowestQuarterlyReturnDate

Jun. 30, 2012

Lowest Quarterly Return

rr_BarChartLowestQuarterlyReturn

(5.17%)

Performance Table Heading

rr_PerformanceTableHeading

Average Annual Total Returns For the periods ended December 31, 2012

Performance Table Uses Highest Federal Rate

rr_PerformanceTableUsesHighestFederalRate

After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes.

Performance Table Not Relevant to Tax Deferred

rr_PerformanceTableNotRelevantToTaxDeferred

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.

Performance Table One Class of after Tax Shown [Text]

rr_PerformanceTableOneClassOfAfterTaxShown

After-tax returns are shown only for Institutional Class shares; after-tax returns for other share classes will vary.

Russell 2000 Value Index

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

18.05%

^[1]

Since Inception

rr_AverageAnnualReturnSinceInception

19.57%

^[1]

Lipper Small-Cap Value Funds

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

15.56%

^[1]

Since Inception

rr_AverageAnnualReturnSinceInception

13.81%

^[1]

Investor Class

Risk/Return:

rr_RiskReturnAbstract

Management fees

rr_ManagementFeesOverAssets

0.60%

Distribution and/or service (12b-1) fees

rr_DistributionAndService12b1FeesOverAssets

none

Other expenses

rr_OtherExpensesOverAssets

4.20%

Acquired Fund Fees and Expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.08%

Total annual fund operating expenses

rr_ExpensesOverAssets

4.88%

^[2]

Fee Waiver or Reimbursement

rr_FeeWaiverOrReimbursementOverAssets

(3.43%)

Total annual fund operating expenses after expense reduction and reimbursement

rr_NetExpensesOverAssets

1.45%

^[3]

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

148

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

1,160

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

2,174

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

4,721

Annual Return 2012

rr_AnnualReturn2012

13.13%

1 Year

rr_AverageAnnualReturnYear01

13.13%

^[1]

Since Inception

rr_AverageAnnualReturnSinceInception

11.29%

^[1]

Inception Date

rr_AverageAnnualReturnInceptionDate

Nov. 15, 2011

^[1]

Investor Class | After Taxes on Distributions

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

12.47%

^[1]

Since Inception

rr_AverageAnnualReturnSinceInception

10.68%

^[1]

Investor Class | After Taxes on Distributions and Sales

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

8.57%

^[1]

Since Inception

rr_AverageAnnualReturnSinceInception

9.27%

^[1]

Y Class

Risk/Return:

rr_RiskReturnAbstract

Management fees

rr_ManagementFeesOverAssets

0.60%

Distribution and/or service (12b-1) fees

rr_DistributionAndService12b1FeesOverAssets

none

Other expenses

rr_OtherExpensesOverAssets

3.84%

Acquired Fund Fees and Expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.08%

Total annual fund operating expenses

rr_ExpensesOverAssets

4.52%

^[2]

Fee Waiver or Reimbursement

rr_FeeWaiverOrReimbursementOverAssets

(3.35%)

Total annual fund operating expenses after expense reduction and reimbursement

rr_NetExpensesOverAssets

1.17%

^[3]

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

119

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

1,062

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

2,014

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

$ 4,435

1 Year

rr_AverageAnnualReturnYear01

13.42%

^[1]

Since Inception

rr_AverageAnnualReturnSinceInception

11.62%

^[1]

Inception Date

rr_AverageAnnualReturnInceptionDate

Nov. 15, 2011

^[1]

[1] 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.

[2] The Total Annual Fund Operating Expenses do not correlate to the ratio of expenses to average net assets provided in the Fund's Financial Highlights table, which reflects the operating expenses of the Fund and does not include Acquired Fund Fees and Expenses.

[3] The Manager has contractually agreed to reduce and/or reimburse the Y Class and Investor Class of the Fund for Other Expenses, as applicable, through February 28, 2014 to the extent that Total Annual Fund Operating Expenses exceed 1.09% for the Y Class, and 1.37% for the Investor Class. 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.

XML

Label

Element

Value

Risk/Return:

rr_RiskReturnAbstract

Risk/Return [Heading]

rr_RiskReturnHeading

American Beacon Small Cap Value Fund

Expense [Heading]

rr_ExpenseHeading

Fees and Expenses of the Fund

Expense Narrative [Text Block]

rr_ExpenseNarrativeTextBlock

This table describes the fees and expenses that you may pay if you buy and hold shares of the Fund.

Operating Expenses Caption [Text]

rr_OperatingExpensesCaption

Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)

Portfolio Turnover [Heading]

rr_PortfolioTurnoverHeading

Portfolio Turnover

Portfolio Turnover [Text Block]

rr_PortfolioTurnoverTextBlock

The Fund pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when fund shares are held in a taxable account. These costs, which are not reflected in annual fund operating expenses or in the example, affect the Fund’s performance. During the most recent fiscal year, the Fund’s portfolio turnover rate was 51% of the average value of its portfolio.

Portfolio Turnover, Rate

rr_PortfolioTurnoverRate

51.00%

Expenses Not Correlated to Ratio Due to Acquired Fund Fees [Text]

rr_ExpensesNotCorrelatedToRatioDueToAcquiredFundFees

The Total Annual Fund Operating Expenses do not correlate to the ratio of expenses to average net assets provided in the Fund's Financial Highlights table, which reflects the operating expenses of the Fund and does not include Acquired Fund Fees and Expenses.

Expense Example [Heading]

rr_ExpenseExampleHeading

Example

Expense Example Narrative [Text Block]

rr_ExpenseExampleNarrativeTextBlock

This Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return each year and that the Fund’s operating expenses remain the same. Although your actual costs may be higher or lower, based on these assumptions, your costs would be:

Strategy [Heading]

rr_StrategyHeading

Principal Investment Strategies

Strategy Narrative [Text Block]

rr_StrategyNarrativeTextBlock

Under normal circumstances, at least 80% of the Fund’s net assets (plus the amount of any borrowings for investment purposes) are invested in equity securities of small market capitalization U.S. companies. These companies have market capitalizations of $4 billion or less at the time of investment. The Fund’s investments may include common stocks, preferred stocks, securities convertible into common stocks, real estate investment trusts (“REITs”), American Depositary Receipts (“ADRs”) and U.S. dollar-denominated foreign stocks trading on U.S. exchanges (collectively, “stocks”).

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 reducing volatility and downside risk.

The sub-advisors select stocks that, in their opinion, have most or all of the following characteristics (relative to the Russell 2000® Index):

u above-average earnings growth potential,

u below-average price to earnings ratio, and

u below-average price to book value ratio.

Each of the 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.

The Fund may invest cash balances in money market funds and may purchase and sell futures contracts to gain market exposure on cash balances or reduce market exposure in anticipation of liquidity needs.

The Fund may lend its securities to broker-dealers and other institutions to earn additional income.

Risk [Heading]

rr_RiskHeading

Principal Risks

Risk Narrative [Text Block]

rr_RiskNarrativeTextBlock

There is no assurance that the Fund will achieve its investment objective and you could lose part or all of your investment in the Fund. The Fund is not designed for investors who need an assured level of income and is intended to be a long-term investment. The Fund is not a complete investment program and may not be appropriate for all investors. Investors should carefully consider their own investment goals and risk tolerance before investing in the Fund. The principal risks of investing in the Fund are:

Equity Investments Risk

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, REITs, ADRs and U.S. dollar-denominated foreign stocks traded on U.S. exchanges Such investments may expose the Fund to additional risks.

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 traded on U.S. exchanges are subject to certain of the risks associated with investing directly in foreign securities. 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.

Foreign Exposure Risk

The Fund may invest in securities issued by foreign companies through ADRs and U.S. dollar-denominated foreign stocks trading on U.S. exchanges. ADRs 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 stocks.  Non-U.S. investments carry potential risks not associated with U.S. investments. Such risks include, but are not limited to: (1) currency exchange rate fluctuations, (2) political and financial instability, (3) less liquidity and greater volatility, (4) lack of uniform accounting, auditing and financial reporting standards, (5) increased price volatility, and (6) less government regulation and supervision of foreign stock exchanges, brokers and listed companies.

Futures Contracts Risk

Futures contracts are a type of derivative investment. A derivative refers to any financial instrument whose value is derived, at least in part, from the price of another security or a specified index, asset or rate. The use of derivatives presents risks different from, and possibly greater than, the risks associated with investing directly in traditional securities. Gains or losses in a derivative may be magnified and may be much greater than the derivatives original cost.

There may be an imperfect correlation between the changes in market value of the securities held by the Fund and the prices of futures contracts. There may not be a liquid secondary market for the futures contract. When the Fund purchases or sells a futures contract, it is subject to daily variation margin calls that could be substantial in the event of adverse price movements. If the Fund has insufficient cash to meet daily variation margin requirements, it might need to sell securities at a time when such sales are disadvantageous.

Investment Risk

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. Therefore, you may lose money by investing in the Fund.

Issuer Risk

The value of a security may decline for a number of reasons which directly relate to the issuer, such as management performance, financial leverage and reduced demand for the issuer’s goods or services, as well as the historical and prospective earnings of the issuer and the value of its assets.

Market Events Risk

Turbulence in financial markets and reduced liquidity in equity, credit and fixed-income markets may negatively affect many issuers worldwide which could adversely affect the Fund.

Market Risk

Market risks, including political, regulatory, market and economic developments and developments that impact specific economic sectors, industries or segments of the market, can affect the value of the Fund’s shares.  The Fund’s equity investments are subject to stock market risk, which  involves the possibility that the value of the Fund’s investments in stocks will decline due to drops in the stock market.  From time to time, certain investments 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 holdings to meet redemption requests or other cash needs, the Fund may have to sell them at a loss.

Securities Lending Risk

To the extent the Fund lends its securities, it may be subject to the following risks. Borrowers of the Fund’s securities typically provide collateral in the form of cash that is reinvested in securities. The securities in which the collateral is invested may not perform sufficiently to cover the return collateral payments owed to borrowers. In addition, delays may occur in the recovery of securities from borrowers, which could interfere with the Fund’s ability to vote proxies or to settle transactions.

Securities Selection Risk

Securities selected by the Manager or 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.

Small Capitalization Companies Risk

Investing in the securities of small capitalization companies involves greater risk and the possibility of greater price volatility than investing in larger capitalization and more established companies, since small 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.

Value Stocks Risk

Value stocks are subject to the risk that their intrinsic value may never be realized by the market or that their prices may 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.

Risk Lose Money [Text]

rr_RiskLoseMoney

There is no assurance that the Fund will achieve its investment objective and you could lose part or all of your investment in the Fund.

Risk Not Insured Depository Institution [Text]

rr_RiskNotInsuredDepositoryInstitution

An investment in the Fund is not a deposit of a bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.

Bar Chart and Performance Table [Heading]

rr_BarChartAndPerformanceTableHeading

Fund Performance

Performance Narrative [Text Block]

rr_PerformanceNarrativeTextBlock

The bar chart and table below provide an indication of risk by showing 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® Small-Cap Value Funds Index, a composite of mutual funds comparable to the Fund. You may obtain updated performance information on the Fund’s website at www.americanbeaconfunds.com. Past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future.

Performance Information Illustrates Variability of Returns [Text]

rr_PerformanceInformationIllustratesVariabilityOfReturns

The bar chart and table below provide an indication of risk by showing how the Fund's performance has varied from year to year.

Performance Availability Website Address [Text]

rr_PerformanceAvailabilityWebSiteAddress

www.americanbeaconfunds.com

Performance Past Does Not Indicate Future [Text]

rr_PerformancePastDoesNotIndicateFuture

Past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future.

Bar Chart [Heading]

rr_BarChartHeading

Total Return for the Calendar Year Ended 12/31 of each Year

Bar Chart Closing [Text Block]

rr_BarChartClosingTextBlock

Highest Quarterly Return:	24.93%
(1/1/03 through 12/31/12)	(2nd Quarter 2003)
Lowest Quarterly Return:	-25.60%
(1/1/03 through 12/31/12)	(4th Quarter 2008)

Highest Quarterly Return, Label

rr_HighestQuarterlyReturnLabel

Highest Quarterly Return:

Highest Quarterly Return, Date

rr_BarChartHighestQuarterlyReturnDate

Jun. 30, 2003

Highest Quarterly Return

rr_BarChartHighestQuarterlyReturn

24.93%

Lowest Quarterly Return, Label

rr_LowestQuarterlyReturnLabel

Lowest Quarterly Return:

Lowest Quarterly Return, Date

rr_BarChartLowestQuarterlyReturnDate

Dec. 31, 2008

Lowest Quarterly Return

rr_BarChartLowestQuarterlyReturn

(25.60%)

Performance Table Heading

rr_PerformanceTableHeading

Average Annual Total Returns For the periods ended December 31, 2012

Russell 2000 Value Index

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

18.05%

5 Years

rr_AverageAnnualReturnYear05

3.55%

10 Years

rr_AverageAnnualReturnYear10

9.50%

Lipper Small-Cap Value Funds Index

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

15.56%

5 Years

rr_AverageAnnualReturnYear05

4.33%

10 Years

rr_AverageAnnualReturnYear10

10.20%

AMR Class

Risk/Return:

rr_RiskReturnAbstract

Management fees

rr_ManagementFeesOverAssets

0.46%

Distribution and/or service (12b-1) fees

rr_DistributionAndService12b1FeesOverAssets

none

Other expenses

rr_OtherExpensesOverAssets

0.10%

Acquired Fund Fees and Expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.10%

Total annual fund operating expenses

rr_ExpensesOverAssets

0.66%

^[1]

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

67

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

210

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

367

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

822

Annual Return 2003

rr_AnnualReturn2003

52.07%

Annual Return 2004

rr_AnnualReturn2004

23.88%

Annual Return 2005

rr_AnnualReturn2005

6.06%

Annual Return 2006

rr_AnnualReturn2006

14.99%

Annual Return 2007

rr_AnnualReturn2007

(6.18%)

Annual Return 2008

rr_AnnualReturn2008

(31.81%)

Annual Return 2009

rr_AnnualReturn2009

35.82%

Annual Return 2010

rr_AnnualReturn2010

26.46%

Annual Return 2011

rr_AnnualReturn2011

(3.79%)

Annual Return 2012

rr_AnnualReturn2012

16.81%

1 Year

rr_AverageAnnualReturnYear01

16.81%

5 Years

rr_AverageAnnualReturnYear05

5.65%

10 Years

rr_AverageAnnualReturnYear10

10.99%

[1] The Total Annual Fund Operating Expenses do not correlate to the ratio of expenses to average net assets provided in the Fund's Financial Highlights table, which reflects the operating expenses of the Fund and does not include Acquired Fund Fees and Expenses.

XML

American Beacon Emerging Markets Fund | American Beacon Emerging Markets Fund

American Beacon Emerging Markets Fund

Investment Objective

The Fund’s investment objective is long-term capital appreciation.

Fees and Expenses of the Fund

This table describes the fees and expenses that you may pay if you buy and hold shares of the Fund. You may qualify for sales discounts if you and your eligible family members invest, or agree to invest in the future, at least $50,000 in 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 101 of the Prospectus and “Additional Purchase and Sale Information for A Class Shares” on page 78 of the statement of additional information.

Shareholder fees (fees paid directly from your investment)

Shareholder Fees American Beacon Emerging Markets Fund	A Class	C Class	Y Class	Institutional Class	Investor Class
Maximum sales charge imposed on purchases (as a percentage of offering price)	5.75%	none	none	none	none
Maximum deferred sales charge load (as a percentage of the lower of original offering price or redemption proceeds)	none	1.00%	none	none	none
Redemption fee (as a percentage of amount redeemed; applies to the proceeds of shares redeemed within 90 days of purchase)	2.00%	2.00%	2.00%	2.00%	2.00%

Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)

Annual Fund Operating Expenses American Beacon Emerging Markets Fund		A Class	C Class	Y Class	Institutional Class	Investor Class
Management fees		0.80%	0.80%	0.80%	0.80%	0.80%
Distribution and/or service (12b-1) fees		0.25%	1.00%	none	none	none
Other expenses		0.96%	1.94%	0.92%	0.70%	1.04%
Acquired Fund Fees and Expenses		0.01%	0.01%	0.01%	0.01%	0.01%
Total annual fund operating expenses	[1]	2.02%	3.75%	1.73%	1.51%	1.85%
Expense Reduction and Reimbursement		0.22%	1.20%	0.27%	0.15%	0.05%
Total annual fund operating expenses after expense reduction and reimbursement	[2]	1.80%	2.55%	1.46%	1.36%	1.80%

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 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:

Expense Example American Beacon Emerging Markets Fund (USD $)	1 year	3 years	5 years	10 years
A Class	747	1,151	1,580	2,770
C Class	358	1,036	1,833	3,916
Y Class	149	519	914	2,020
Institutional Class	138	462	809	1,789
Investor Class	183	577	996	2,166

Assuming no redemption of shares:

Expense Example No Redemption (USD $)	1 year	3 years	5 years	10 years
American Beacon Emerging Markets Fund C Class	258	1,036	1,833	3,916

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 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 44% of the average value of its portfolio.

Principal Investment Strategies

Under normal circumstances, at least 80% of the Fund’s net assets (plus the amount of any borrowings for investment purposes) are invested in equity securities of issuers that:

u are primarily listed on the trading market of an emerging market country;

u are headquartered in an emerging market country; or

u derive 50% or more of their revenues from, or have 50% or more of their assets in, an emerging market country.

An emerging market country is one that:

u has an emerging stock market as defined by the International Finance Corporation;

u has a low- to middle-income economy according to the World Bank;

u is included in the IFC Investable Index or the Morgan Stanley Capital International® Emerging Markets Index; or

u has a per-capita gross national product of $10,000 or less.

The Fund’s equity investments may include common stocks, preferred stocks, securities convertible into common stocks and depositary receipts (collectively referred to as “stocks”). The Fund may invest in companies of all market capitalizations.

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 reducing volatility and downside risk.

One sub-advisor combines a top-down country allocation investment approach with bottom-up stock selection. The sub-advisor first allocates its portion of the Fund’s assets among emerging market countries based on relative economic, political and social fundamentals, stock valuations and investor sentiment. The sub-advisor then selects individual securities within these countries on the basis of attractive growth characteristics, reasonable valuations and company managements with a strong shareholder value orientation. To attempt to manage risk, the sub-advisor emphasizes thorough macroeconomic and fundamental research.

The second sub-advisor utilizes a bottom-up investment strategy that is value-oriented and research-driven. The sub-advisor buys stocks that exhibit good value characteristics, strong business fundamentals and positive business momentum. The focus on business momentum helps the sub-advisor avoid the value trap, while bottom-up fundamental security analysis helps to verify their quantitative analysis. Lastly, they focus on the preservation of capital as they believe it is the key to long-term performance.

The third sub-advisor uses a Graham and Dodd based value oriented approach to managing emerging market equity investments. The strategy focuses on fundamental research at the company level and attempts to identify securities trading at significant discounts to their long term intrinsic value. This discount, or “margin of safety” is typically a by-product of short term price volatility and market inefficiency and the sub-advisor seeks to outperform the benchmark over the long-term by building concentrated portfolios of undervalued companies which they believe offer attractive long-term appreciation potential.

The sub-advisors may consider potential changes in currency exchange rates when choosing stocks. A sub-advisor may trade forward foreign currency contracts, including NDFs, or currency futures in an attempt to reduce the Fund’s risk exposure to adverse fluctuations in currency exchange rates.

The Fund may invest cash balances in money market funds and may purchase and sell futures contracts to gain market exposure on cash balances or reduce market exposure in anticipation of liquidity needs.

Principal Risks

There is no assurance that the Fund will achieve its investment objective and you could lose part or all of your investment in the Fund. The Fund is not designed for investors who need an assured level of income and is intended to be a long-term investment. The Fund is not a complete investment program and may not be appropriate for all investors. Investors should carefully consider their own investment goals and risk tolerance before investing in the Fund. The principal risks of investing in the Fund are:

Currency Risk

Foreign currencies may decline in value relative to the U.S. dollar and affect the Fund’s investments in foreign (non-U.S.) currencies or in securities that trade in, and receive revenues in, or in derivatives that provide exposure to, foreign (non-U.S.) currencies.

Emerging Markets Risk

When investing in emerging markets, the risks mentioned below of investing in foreign securities are heightened. Emerging markets have unique risks that are greater than or in addition to investing in developed markets because emerging markets are generally smaller, less developed, less liquid and more volatile than the securities markets of the U.S. and other developed markets. There are also risks of: greater political uncertainties; an economy’s dependence on revenues from particular commodities or on international aid or development assistance; currency transfer restrictions; a limited number of potential buyers for such securities; and delays and disruptions in securities settlement procedures. In addition, there may be more volatile rates of return.

Equity Investments Risk

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, rights, warrants and depository receipts. Such investments may expose the Fund to additional risks.

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 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. Depository receipts are subject to certain of the risks associated with investing directly in foreign securities.

Foreign Investing Risk

Non-U.S. investments carry potential risks not associated with U.S. investments. Such risks include, but are not limited to: (1) currency exchange rate fluctuations, (2) political and financial instability, (3) less liquidity and greater volatility, (4) lack of uniform accounting, auditing and financial reporting standards, (5) increased price volatility, (6) less government regulation and supervision of foreign stock exchanges, brokers and listed companies, and (7) delays in transaction settlement in some foreign markets.

Futures Contracts and Foreign Currency Forward Contracts Risk

Futures contracts and foreign currency forward contracts, including NDFs, are derivative instruments pursuant to a contract with a counterparty to pay a fixed price for an agreed amount of securities or other underlying assets at an agreed date or to buy or sell a specific currency at a future date at a price set at the time of the contract. The use of such derivative instruments may expose the Fund to additional risks that it would not be subject to if they invested directly in the securities underlying those derivatives. Futures contracts may experience potentially dramatic price changes (losses) and imperfect correlations between the price of the contract and the underlying security, index or currency which will increase the volatility of the Fund and may involve a small investment of cash relative to the magnitude of the risk assumed. There can be no assurance that any strategy used will succeed. Not all forward contracts, including NDFs, require a counterparty to post collateral, which may expose the Fund to greater losses in the event of a default by a counterparty.

Hedging Risk

Gains or losses from positions in hedging instruments may be much greater than the instrument’s original cost. The counterparty may be unable to honor its financial obligation to the Fund. In addition, the Manager or a sub-advisor may be unable to close the transaction at the time it would like or at the price it believes the security is currently worth.

Investment Risk

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. Therefore, you may lose money by investing in the Fund.

Issuer Risk

The value of a security may decline for a number of reasons which directly relate to the issuer, such as management performance, financial leverage and reduced demand for the issuer’s goods or services, as well as the historical and prospective earnings of the issuer and the value of its assets.

Large Capitalization Companies Risk

The securities of large market capitalization companies may underperform other segments of the market because such companies may be less responsive to competitive challenges and opportunities and may be unable to attain high growth rates during periods of economic expansion.

Market Events Risk

Turbulence in financial markets and reduced liquidity in equity, credit and fixed-income markets may negatively affect many issuers worldwide which could adversely affect the Fund.

Market Risk

Market risks, including political, regulatory, market and economic developments, and developments that impact specific economic sectors, industries or segments of the market, can affect the value of the Fund’s shares. The Fund’s equity investments are subject to stock market risk, which involves the possibility that the value of the Fund’s investments in stocks of a particular country will decline due to drops in the stock market. From time to time, certain investments 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 holdings to meet redemption requests or other cash needs, the Fund may have to sell them at a loss.

Market Timing Risk

Because the Fund invests in foreign securities, it is particularly subject to the risk of market timing activities. The Fund generally prices foreign securities using their closing prices from the foreign markets in which they trade, typically prior to the Fund’s determination of its net asset value. These prices may be affected by events that occur after the close of a foreign market but before the Fund prices its shares. In such instances, the Fund may fair value foreign securities. However, some investors may engage in frequent short-term trading in the Fund to take advantage of any price differentials that may be reflected in the net asset value of the Fund’s shares. There is no assurance that fair valuation of securities can reduce or eliminate market timing. While the Manager monitors trading in Fund shares, there is no guarantee that it can detect all market timing activities.

Securities Selection Risk

Securities selected by the Manager or 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.

Small and Medium Capitalization Companies Risk

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.

Fund Performance

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® Emerging Markets Funds Index, a composite of mutual funds comparable to the Fund.

The chart and the table below show the performance of the Fund’s Institutional Class shares for all periods. The Fund began operations of 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 Institutional Class shares is shown for Y Class shares and the performance of the Investor Class shares is shown for A Class and C Class shares, prior to the dates such newer classes were first offered. 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 new 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.

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.

Total Return for the Calendar Year Ended 12/31 of each Year

Calendar year total returns for Institutional Class shares

Highest Quarterly Return:	35.42%
(1/1/03 through 12/31/12)	(2nd Quarter 2009)
Lowest Quarterly Return:	-26.34%
(1/1/03 through 12/31/12)	(4th Quarter 2008)

Average Annual Total Returns For the periods ended December 31, 2012

Average Annual Returns American Beacon Emerging Markets Fund		1 Year	5 Years	10 Years	Inception Date
Institutional Class	[1]	17.56%	(1.94%)	15.14%	Jul. 31, 2000
A Class	[1]	16.98%	(2.35%)	14.74%	May 17, 2010
C Class	[1]	16.17%	(2.68%)	14.54%	Sep. 01, 2010
Y Class	[1]	17.29%	(2.02%)	15.09%	Mar. 01, 2010
Investor Class	[1]	17.02%	(2.33%)	14.75%	Oct. 01, 2002
After Taxes on Distributions Institutional Class	[1]	17.12%	(2.98%)	13.45%
After Taxes on Distributions and Sales Institutional Class	[1]	11.41%	1.94%	13.22%
MSCI Emerging Markets Index	[1]	18.22%	(0.92%)	16.52%
Lipper Emerging Markets Funds Index	[1]	20.08%	(1.48%)	15.89%

[1] The Total Annual Fund Operating Expenses do not correlate to the ratio of expenses to average net assets provided in the Fund's Financial Highlights table, which reflects the operating expenses of the Fund and does not include Acquired Fund Fees and Expenses.

[2] The Manager has contractually agreed to reduce and/or reimburse the A Class, C Class, Y Class, Institutional Class, and Investor Class of the Fund for Other Expenses, as applicable, through February 28, 2014 to the extent that Total Annual Fund Operating Expenses exceed 1.79% for the A Class, 2.54% for the C Class, 1.45% for the Y Class, 1.35% for the Institutional Class, and 1.79% for the Investor Class (excluding taxes, brokerage commissions, acquired fund fees and expenses and other extraordinary expenses such as litigation). The contractual expense reimbursement 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.

[1] 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.

XML

Label

Element

Value

Risk/Return:

rr_RiskReturnAbstract

Risk/Return [Heading]

rr_RiskReturnHeading

American Beacon Emerging Markets Fund

Objective [Heading]

rr_ObjectiveHeading

Investment Objective

Objective, Primary [Text Block]

rr_ObjectivePrimaryTextBlock

The Fund’s investment objective is long-term capital appreciation.

Expense [Heading]

rr_ExpenseHeading

Fees and Expenses of the Fund

Expense Narrative [Text Block]

rr_ExpenseNarrativeTextBlock

This table describes the fees and expenses that you may pay if you buy and hold shares of the Fund. 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 101 of the Prospectus and “Additional Purchase and Sale Information for A Class Shares” on page 78 of the statement of additional information.

Shareholder Fees Caption [Text]

rr_ShareholderFeesCaption

Shareholder fees (fees paid directly from your investment)

Operating Expenses Caption [Text]

rr_OperatingExpensesCaption

Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)

Fee Waiver or Reimbursement over Assets, Date of Termination

rr_FeeWaiverOrReimbursementOverAssetsDateOfTermination

2014-02-28

Portfolio Turnover [Heading]

rr_PortfolioTurnoverHeading

Portfolio Turnover

Portfolio Turnover [Text Block]

rr_PortfolioTurnoverTextBlock

The Fund pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when fund shares are held in a taxable account. These costs, which are not reflected in annual fund operating expenses or in the example, affect the Fund’s performance. During the most recent fiscal year, the Fund’s portfolio turnover rate was 44% of the average value of its portfolio.

Portfolio Turnover, Rate

rr_PortfolioTurnoverRate

44.00%

Expense Breakpoint Discounts [Text]

rr_ExpenseBreakpointDiscounts

You may qualify for sales discounts if you and your eligible family members invest, or agree to invest in the future, at least $50,000 in the A Class shares of the American Beacon Funds.

Expense Breakpoint, Minimum Investment Required [Amount]

rr_ExpenseBreakpointMinimumInvestmentRequiredAmount

$ 50,000

Expenses Not Correlated to Ratio Due to Acquired Fund Fees [Text]

rr_ExpensesNotCorrelatedToRatioDueToAcquiredFundFees

The Total Annual Fund Operating Expenses do not correlate to the ratio of expenses to average net assets provided in the Fund's Financial Highlights table, which reflects the operating expenses of the Fund and does not include Acquired Fund Fees and Expenses.

Expense Example [Heading]

rr_ExpenseExampleHeading

Example

Expense Example Narrative [Text Block]

rr_ExpenseExampleNarrativeTextBlock

This Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return each year and that the Fund’s operating expenses remain the same. Although your actual costs may be higher or lower, based on these assumptions, your costs would be:

Expense Example, No Redemption, By Year, Caption [Text]

rr_ExpenseExampleNoRedemptionByYearCaption

Assuming no redemption of shares:

Strategy [Heading]

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Principal Investment Strategies

Strategy Narrative [Text Block]

rr_StrategyNarrativeTextBlock

Under normal circumstances, at least 80% of the Fund’s net assets (plus the amount of any borrowings for investment purposes) are invested in equity securities of issuers that:

u are primarily listed on the trading market of an emerging market country;

u are headquartered in an emerging market country; or

u derive 50% or more of their revenues from, or have 50% or more of their assets in, an emerging market country.

An emerging market country is one that:

u has an emerging stock market as defined by the International Finance Corporation;

u has a low- to middle-income economy according to the World Bank;

u is included in the IFC Investable Index or the Morgan Stanley Capital International® Emerging Markets Index; or

u has a per-capita gross national product of $10,000 or less.

The Fund’s equity investments may include common stocks, preferred stocks, securities convertible into common stocks and depositary receipts (collectively referred to as “stocks”). The Fund may invest in companies of all market capitalizations.

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 reducing volatility and downside risk.

One sub-advisor combines a top-down country allocation investment approach with bottom-up stock selection. The sub-advisor first allocates its portion of the Fund’s assets among emerging market countries based on relative economic, political and social fundamentals, stock valuations and investor sentiment. The sub-advisor then selects individual securities within these countries on the basis of attractive growth characteristics, reasonable valuations and company managements with a strong shareholder value orientation. To attempt to manage risk, the sub-advisor emphasizes thorough macroeconomic and fundamental research.

The second sub-advisor utilizes a bottom-up investment strategy that is value-oriented and research-driven. The sub-advisor buys stocks that exhibit good value characteristics, strong business fundamentals and positive business momentum. The focus on business momentum helps the sub-advisor avoid the value trap, while bottom-up fundamental security analysis helps to verify their quantitative analysis. Lastly, they focus on the preservation of capital as they believe it is the key to long-term performance.

The third sub-advisor uses a Graham and Dodd based value oriented approach to managing emerging market equity investments. The strategy focuses on fundamental research at the company level and attempts to identify securities trading at significant discounts to their long term intrinsic value. This discount, or “margin of safety” is typically a by-product of short term price volatility and market inefficiency and the sub-advisor seeks to outperform the benchmark over the long-term by building concentrated portfolios of undervalued companies which they believe offer attractive long-term appreciation potential.

The sub-advisors may consider potential changes in currency exchange rates when choosing stocks. A sub-advisor may trade forward foreign currency contracts, including NDFs, or currency futures in an attempt to reduce the Fund’s risk exposure to adverse fluctuations in currency exchange rates.

The Fund may invest cash balances in money market funds and may purchase and sell futures contracts to gain market exposure on cash balances or reduce market exposure in anticipation of liquidity needs.

Risk [Heading]

rr_RiskHeading

Principal Risks

Risk Narrative [Text Block]

rr_RiskNarrativeTextBlock

There is no assurance that the Fund will achieve its investment objective and you could lose part or all of your investment in the Fund. The Fund is not designed for investors who need an assured level of income and is intended to be a long-term investment. The Fund is not a complete investment program and may not be appropriate for all investors. Investors should carefully consider their own investment goals and risk tolerance before investing in the Fund. The principal risks of investing in the Fund are:

Currency Risk

Foreign currencies may decline in value relative to the U.S. dollar and affect the Fund’s investments in foreign (non-U.S.) currencies or in securities that trade in, and receive revenues in, or in derivatives that provide exposure to, foreign (non-U.S.) currencies.

Emerging Markets Risk

When investing in emerging markets, the risks mentioned below of investing in foreign securities are heightened. Emerging markets have unique risks that are greater than or in addition to investing in developed markets because emerging markets are generally smaller, less developed, less liquid and more volatile than the securities markets of the U.S. and other developed markets. There are also risks of: greater political uncertainties; an economy’s dependence on revenues from particular commodities or on international aid or development assistance; currency transfer restrictions; a limited number of potential buyers for such securities; and delays and disruptions in securities settlement procedures. In addition, there may be more volatile rates of return.

Equity Investments Risk

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, rights, warrants and depository receipts. Such investments may expose the Fund to additional risks.

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 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. Depository receipts are subject to certain of the risks associated with investing directly in foreign securities.

Foreign Investing Risk

Non-U.S. investments carry potential risks not associated with U.S. investments. Such risks include, but are not limited to: (1) currency exchange rate fluctuations, (2) political and financial instability, (3) less liquidity and greater volatility, (4) lack of uniform accounting, auditing and financial reporting standards, (5) increased price volatility, (6) less government regulation and supervision of foreign stock exchanges, brokers and listed companies, and (7) delays in transaction settlement in some foreign markets.

Futures Contracts and Foreign Currency Forward Contracts Risk

Futures contracts and foreign currency forward contracts, including NDFs, are derivative instruments pursuant to a contract with a counterparty to pay a fixed price for an agreed amount of securities or other underlying assets at an agreed date or to buy or sell a specific currency at a future date at a price set at the time of the contract. The use of such derivative instruments may expose the Fund to additional risks that it would not be subject to if they invested directly in the securities underlying those derivatives. Futures contracts may experience potentially dramatic price changes (losses) and imperfect correlations between the price of the contract and the underlying security, index or currency which will increase the volatility of the Fund and may involve a small investment of cash relative to the magnitude of the risk assumed. There can be no assurance that any strategy used will succeed. Not all forward contracts, including NDFs, require a counterparty to post collateral, which may expose the Fund to greater losses in the event of a default by a counterparty.

Hedging Risk

Gains or losses from positions in hedging instruments may be much greater than the instrument’s original cost. The counterparty may be unable to honor its financial obligation to the Fund. In addition, the Manager or a sub-advisor may be unable to close the transaction at the time it would like or at the price it believes the security is currently worth.

Investment Risk

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. Therefore, you may lose money by investing in the Fund.

Issuer Risk

The value of a security may decline for a number of reasons which directly relate to the issuer, such as management performance, financial leverage and reduced demand for the issuer’s goods or services, as well as the historical and prospective earnings of the issuer and the value of its assets.

Large Capitalization Companies Risk

The securities of large market capitalization companies may underperform other segments of the market because such companies may be less responsive to competitive challenges and opportunities and may be unable to attain high growth rates during periods of economic expansion.

Market Events Risk

Turbulence in financial markets and reduced liquidity in equity, credit and fixed-income markets may negatively affect many issuers worldwide which could adversely affect the Fund.

Market Risk

Market risks, including political, regulatory, market and economic developments, and developments that impact specific economic sectors, industries or segments of the market, can affect the value of the Fund’s shares. The Fund’s equity investments are subject to stock market risk, which involves the possibility that the value of the Fund’s investments in stocks of a particular country will decline due to drops in the stock market. From time to time, certain investments 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 holdings to meet redemption requests or other cash needs, the Fund may have to sell them at a loss.

Market Timing Risk

Because the Fund invests in foreign securities, it is particularly subject to the risk of market timing activities. The Fund generally prices foreign securities using their closing prices from the foreign markets in which they trade, typically prior to the Fund’s determination of its net asset value. These prices may be affected by events that occur after the close of a foreign market but before the Fund prices its shares. In such instances, the Fund may fair value foreign securities. However, some investors may engage in frequent short-term trading in the Fund to take advantage of any price differentials that may be reflected in the net asset value of the Fund’s shares. There is no assurance that fair valuation of securities can reduce or eliminate market timing. While the Manager monitors trading in Fund shares, there is no guarantee that it can detect all market timing activities.

Securities Selection Risk

Securities selected by the Manager or 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.

Small and Medium Capitalization Companies Risk

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.

Risk Lose Money [Text]

rr_RiskLoseMoney

There is no assurance that the Fund will achieve its investment objective and you could lose part or all of your investment in the Fund.

Risk Not Insured Depository Institution [Text]

rr_RiskNotInsuredDepositoryInstitution

An investment in the Fund is not a deposit of a bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.

Bar Chart and Performance Table [Heading]

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Fund Performance

Performance Narrative [Text Block]

rr_PerformanceNarrativeTextBlock

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® Emerging Markets Funds Index, a composite of mutual funds comparable to the Fund.

The chart and the table below show the performance of the Fund’s Institutional Class shares for all periods. The Fund began operations of 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 Institutional Class shares is shown for Y Class shares and the performance of the Investor Class shares is shown for A Class and C Class shares, prior to the dates such newer classes were first offered. 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 new 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.

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.

Performance Information Illustrates Variability of Returns [Text]

rr_PerformanceInformationIllustratesVariabilityOfReturns

The bar chart and table below provide an indication of risk by showing how the Fund's performance has varied from year to year.

Performance Availability Website Address [Text]

rr_PerformanceAvailabilityWebSiteAddress

www.americanbeaconfunds.com

Performance Past Does Not Indicate Future [Text]

rr_PerformancePastDoesNotIndicateFuture

Past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future.

Bar Chart [Heading]

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Calendar year total returns for Institutional Class shares

Bar Chart Narrative [Text Block]

rr_BarChartNarrativeTextBlock

Total Return for the Calendar Year Ended 12/31 of each Year

Bar Chart Does Not Reflect Sales Loads [Text]

rr_BarChartDoesNotReflectSalesLoads

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.

Bar Chart Closing [Text Block]

rr_BarChartClosingTextBlock

Highest Quarterly Return:	35.42%
(1/1/03 through 12/31/12)	(2nd Quarter 2009)
Lowest Quarterly Return:	-26.34%
(1/1/03 through 12/31/12)	(4th Quarter 2008)

Highest Quarterly Return, Label

rr_HighestQuarterlyReturnLabel

Highest Quarterly Return:

Highest Quarterly Return, Date

rr_BarChartHighestQuarterlyReturnDate

Jun. 30, 2009

Highest Quarterly Return

rr_BarChartHighestQuarterlyReturn

35.42%

Lowest Quarterly Return, Label

rr_LowestQuarterlyReturnLabel

Lowest Quarterly Return:

Lowest Quarterly Return, Date

rr_BarChartLowestQuarterlyReturnDate

Dec. 31, 2008

Lowest Quarterly Return

rr_BarChartLowestQuarterlyReturn

(26.34%)

Performance Table Heading

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Average Annual Total Returns For the periods ended December 31, 2012

Performance Table Uses Highest Federal Rate

rr_PerformanceTableUsesHighestFederalRate

After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes.

Performance Table Not Relevant to Tax Deferred

rr_PerformanceTableNotRelevantToTaxDeferred

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.

Performance Table One Class of after Tax Shown [Text]

rr_PerformanceTableOneClassOfAfterTaxShown

After-tax returns are shown only for Institutional Class shares; after-tax returns for other share classes will vary.

MSCI Emerging Markets Index

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

18.22%

^[1]

5 Years

rr_AverageAnnualReturnYear05

(0.92%)

^[1]

10 Years

rr_AverageAnnualReturnYear10

16.52%

^[1]

Lipper Emerging Markets Funds Index

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

20.08%

^[1]

5 Years

rr_AverageAnnualReturnYear05

(1.48%)

^[1]

10 Years

rr_AverageAnnualReturnYear10

15.89%

^[1]

Institutional Class

Risk/Return:

rr_RiskReturnAbstract

Maximum sales charge imposed on purchases (as a percentage of offering price)

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

none

Maximum deferred sales charge load (as a percentage of the lower of original offering price or redemption proceeds)

rr_MaximumDeferredSalesChargeOverOther

none

Redemption Fee (as a percentage of Amount Redeemed)

rr_RedemptionFeeOverRedemption

(2.00%)

Management fees

rr_ManagementFeesOverAssets

0.80%

Distribution and/or service (12b-1) fees

rr_DistributionAndService12b1FeesOverAssets

none

Other expenses

rr_OtherExpensesOverAssets

0.70%

Acquired Fund Fees and Expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.01%

Total annual fund operating expenses

rr_ExpensesOverAssets

1.51%

^[2]

Fee Waiver or Reimbursement

rr_FeeWaiverOrReimbursementOverAssets

(0.15%)

Total annual fund operating expenses after expense reduction and reimbursement

rr_NetExpensesOverAssets

1.36%

^[3]

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

138

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

462

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

809

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

1,789

Annual Return 2003

rr_AnnualReturn2003

57.80%

Annual Return 2004

rr_AnnualReturn2004

24.70%

Annual Return 2005

rr_AnnualReturn2005

28.68%

Annual Return 2006

rr_AnnualReturn2006

32.91%

Annual Return 2007

rr_AnnualReturn2007

34.12%

Annual Return 2008

rr_AnnualReturn2008

(51.44%)

Annual Return 2009

rr_AnnualReturn2009

71.39%

Annual Return 2010

rr_AnnualReturn2010

18.29%

Annual Return 2011

rr_AnnualReturn2011

21.64%

Annual Return 2012

rr_AnnualReturn2012

17.56%

1 Year

rr_AverageAnnualReturnYear01

17.56%

^[1]

5 Years

rr_AverageAnnualReturnYear05

(1.94%)

^[1]

10 Years

rr_AverageAnnualReturnYear10

15.14%

^[1]

Inception Date

rr_AverageAnnualReturnInceptionDate

Jul. 31, 2000

^[1]

Institutional Class | After Taxes on Distributions

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

17.12%

^[1]

5 Years

rr_AverageAnnualReturnYear05

(2.98%)

^[1]

10 Years

rr_AverageAnnualReturnYear10

13.45%

^[1]

Institutional Class | After Taxes on Distributions and Sales

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

11.41%

^[1]

5 Years

rr_AverageAnnualReturnYear05

1.94%

^[1]

10 Years

rr_AverageAnnualReturnYear10

13.22%

^[1]

Investor Class

Risk/Return:

rr_RiskReturnAbstract

Maximum sales charge imposed on purchases (as a percentage of offering price)

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

none

Maximum deferred sales charge load (as a percentage of the lower of original offering price or redemption proceeds)

rr_MaximumDeferredSalesChargeOverOther

none

Redemption Fee (as a percentage of Amount Redeemed)

rr_RedemptionFeeOverRedemption

(2.00%)

Management fees

rr_ManagementFeesOverAssets

0.80%

Distribution and/or service (12b-1) fees

rr_DistributionAndService12b1FeesOverAssets

none

Other expenses

rr_OtherExpensesOverAssets

1.04%

Acquired Fund Fees and Expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.01%

Total annual fund operating expenses

rr_ExpensesOverAssets

1.85%

^[2]

Fee Waiver or Reimbursement

rr_FeeWaiverOrReimbursementOverAssets

(0.05%)

Total annual fund operating expenses after expense reduction and reimbursement

rr_NetExpensesOverAssets

1.80%

^[3]

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

183

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

577

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

996

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

2,166

1 Year

rr_AverageAnnualReturnYear01

17.02%

^[1]

5 Years

rr_AverageAnnualReturnYear05

(2.33%)

^[1]

10 Years

rr_AverageAnnualReturnYear10

14.75%

^[1]

Inception Date

rr_AverageAnnualReturnInceptionDate

Oct. 01, 2002

^[1]

Y Class

Risk/Return:

rr_RiskReturnAbstract

Maximum sales charge imposed on purchases (as a percentage of offering price)

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

none

Maximum deferred sales charge load (as a percentage of the lower of original offering price or redemption proceeds)

rr_MaximumDeferredSalesChargeOverOther

none

Redemption Fee (as a percentage of Amount Redeemed)

rr_RedemptionFeeOverRedemption

(2.00%)

Management fees

rr_ManagementFeesOverAssets

0.80%

Distribution and/or service (12b-1) fees

rr_DistributionAndService12b1FeesOverAssets

none

Other expenses

rr_OtherExpensesOverAssets

0.92%

Acquired Fund Fees and Expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.01%

Total annual fund operating expenses

rr_ExpensesOverAssets

1.73%

^[2]

Fee Waiver or Reimbursement

rr_FeeWaiverOrReimbursementOverAssets

(0.27%)

Total annual fund operating expenses after expense reduction and reimbursement

rr_NetExpensesOverAssets

1.46%

^[3]

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

149

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

519

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

914

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

2,020

1 Year

rr_AverageAnnualReturnYear01

17.29%

^[1]

5 Years

rr_AverageAnnualReturnYear05

(2.02%)

^[1]

10 Years

rr_AverageAnnualReturnYear10

15.09%

^[1]

Inception Date

rr_AverageAnnualReturnInceptionDate

Mar. 01, 2010

^[1]

A Class

Risk/Return:

rr_RiskReturnAbstract

Maximum sales charge imposed on purchases (as a percentage of offering price)

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

5.75%

Maximum deferred sales charge load (as a percentage of the lower of original offering price or redemption proceeds)

rr_MaximumDeferredSalesChargeOverOther

none

Redemption Fee (as a percentage of Amount Redeemed)

rr_RedemptionFeeOverRedemption

(2.00%)

Management fees

rr_ManagementFeesOverAssets

0.80%

Distribution and/or service (12b-1) fees

rr_DistributionAndService12b1FeesOverAssets

0.25%

Other expenses

rr_OtherExpensesOverAssets

0.96%

Acquired Fund Fees and Expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.01%

Total annual fund operating expenses

rr_ExpensesOverAssets

2.02%

^[2]

Fee Waiver or Reimbursement

rr_FeeWaiverOrReimbursementOverAssets

(0.22%)

Total annual fund operating expenses after expense reduction and reimbursement

rr_NetExpensesOverAssets

1.80%

^[3]

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

747

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

1,151

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

1,580

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

2,770

1 Year

rr_AverageAnnualReturnYear01

16.98%

^[1]

5 Years

rr_AverageAnnualReturnYear05

(2.35%)

^[1]

10 Years

rr_AverageAnnualReturnYear10

14.74%

^[1]

Inception Date

rr_AverageAnnualReturnInceptionDate

May 17, 2010

^[1]

C Class

Risk/Return:

rr_RiskReturnAbstract

Maximum sales charge imposed on purchases (as a percentage of offering price)

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

none

Maximum deferred sales charge load (as a percentage of the lower of original offering price or redemption proceeds)

rr_MaximumDeferredSalesChargeOverOther

1.00%

Redemption Fee (as a percentage of Amount Redeemed)

rr_RedemptionFeeOverRedemption

(2.00%)

Management fees

rr_ManagementFeesOverAssets

0.80%

Distribution and/or service (12b-1) fees

rr_DistributionAndService12b1FeesOverAssets

1.00%

Other expenses

rr_OtherExpensesOverAssets

1.94%

Acquired Fund Fees and Expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.01%

Total annual fund operating expenses

rr_ExpensesOverAssets

3.75%

^[2]

Fee Waiver or Reimbursement

rr_FeeWaiverOrReimbursementOverAssets

(1.20%)

Total annual fund operating expenses after expense reduction and reimbursement

rr_NetExpensesOverAssets

2.55%

^[3]

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

358

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

1,036

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

1,833

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

3,916

Expense Example, No Redemption, 1 Year

rr_ExpenseExampleNoRedemptionYear01

258

Expense Example, No Redemption, 3 Years

rr_ExpenseExampleNoRedemptionYear03

1,036

Expense Example, No Redemption, 5 Years

rr_ExpenseExampleNoRedemptionYear05

1,833

Expense Example, No Redemption, 10 Years

rr_ExpenseExampleNoRedemptionYear10

$ 3,916

1 Year

rr_AverageAnnualReturnYear01

16.17%

^[1]

5 Years

rr_AverageAnnualReturnYear05

(2.68%)

^[1]

10 Years

rr_AverageAnnualReturnYear10

14.54%

^[1]

Inception Date

rr_AverageAnnualReturnInceptionDate

Sep. 01, 2010

^[1]

[1] 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.

[2] The Total Annual Fund Operating Expenses do not correlate to the ratio of expenses to average net assets provided in the Fund's Financial Highlights table, which reflects the operating expenses of the Fund and does not include Acquired Fund Fees and Expenses.

[3] The Manager has contractually agreed to reduce and/or reimburse the A Class, C Class, Y Class, Institutional Class, and Investor Class of the Fund for Other Expenses, as applicable, through February 28, 2014 to the extent that Total Annual Fund Operating Expenses exceed 1.79% for the A Class, 2.54% for the C Class, 1.45% for the Y Class, 1.35% for the Institutional Class, and 1.79% for the Investor Class (excluding taxes, brokerage commissions, acquired fund fees and expenses and other extraordinary expenses such as litigation). The contractual expense reimbursement 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.

XML

Label

Element

Value

Risk/Return:

rr_RiskReturnAbstract

Risk/Return [Heading]

rr_RiskReturnHeading

American Beacon Small Cap Value Fund

Objective [Heading]

rr_ObjectiveHeading

Investment Objective

Objective, Primary [Text Block]

rr_ObjectivePrimaryTextBlock

The Fund’s investment objective is long-term capital appreciation and current income.

Expense [Heading]

rr_ExpenseHeading

Fees and Expenses of the Fund

Expense Narrative [Text Block]

rr_ExpenseNarrativeTextBlock

This table describes the fees and expenses that you may pay if you buy and hold shares of the Fund. 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 101 of the Prospectus and “Additional Purchase and Sale Information for A Class Shares” on page 78 of the statement of additional information.

Shareholder Fees Caption [Text]

rr_ShareholderFeesCaption

Shareholder Fees (fees paid directly from your investment)

Operating Expenses Caption [Text]

rr_OperatingExpensesCaption

Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)

Fee Waiver or Reimbursement over Assets, Date of Termination

rr_FeeWaiverOrReimbursementOverAssetsDateOfTermination

2014-02-28

Portfolio Turnover [Heading]

rr_PortfolioTurnoverHeading

Portfolio Turnover

Portfolio Turnover [Text Block]

rr_PortfolioTurnoverTextBlock

The Fund pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when fund shares are held in a taxable account. These costs, which are not reflected in annual fund operating expenses or in the example, affect the Fund’s performance. During the most recent fiscal year, the Fund’s portfolio turnover rate was 51% of the average value of its portfolio.

Portfolio Turnover, Rate

rr_PortfolioTurnoverRate

51.00%

Expense Breakpoint Discounts [Text]

rr_ExpenseBreakpointDiscounts

You may qualify for sales discounts if you and your eligible family members invest, or agree to invest in the future, at least $50,000 in the A Class shares of the American Beacon Funds.

Expense Breakpoint, Minimum Investment Required [Amount]

rr_ExpenseBreakpointMinimumInvestmentRequiredAmount

$ 50,000

Expenses Not Correlated to Ratio Due to Acquired Fund Fees [Text]

rr_ExpensesNotCorrelatedToRatioDueToAcquiredFundFees

The Total Annual Fund Operating Expenses do not correlate to the ratio of expenses to average net assets provided in the Fund's Financial Highlights table, which reflects the operating expenses of the Fund and does not include Acquired Fund Fees and Expenses.

Expense Example [Heading]

rr_ExpenseExampleHeading

Example

Expense Example Narrative [Text Block]

rr_ExpenseExampleNarrativeTextBlock

This Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return each year and that the Fund’s operating expenses remain the same. Although your actual costs may be higher or lower, based on these assumptions, your costs would be:

Expense Example, No Redemption, By Year, Caption [Text]

rr_ExpenseExampleNoRedemptionByYearCaption

Assuming no redemption of shares:

Strategy [Heading]

rr_StrategyHeading

Principal Investment Strategies

Strategy Narrative [Text Block]

rr_StrategyNarrativeTextBlock

Under normal circumstances, at least 80% of the Fund’s net assets (plus the amount of any borrowings for investment purposes) are invested in equity securities of small market capitalization U.S. companies. These companies have market capitalizations of $4 billion or less at the time of investment. The Fund’s investments may include common stocks, preferred stocks, securities convertible into common stocks, real estate investment trusts (“REITs”), American Depositary Receipts (“ADRs”) and U.S. dollar-denominated foreign stocks trading on U.S. exchanges (collectively, “stocks”).

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 reducing volatility and downside risk.

The sub-advisors select stocks that, in their opinion, have most or all of the following characteristics (relative to the Russell 2000® Index):

u above-average earnings growth potential,

u below-average price to earnings ratio, and

u below-average price to book value ratio.

Each of the 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.

The Fund may invest cash balances in money market funds and may purchase and sell futures contracts to gain market exposure on cash balances or reduce market exposure in anticipation of liquidity needs.

The Fund may lend its securities to broker-dealers and other institutions to earn additional income.

Risk [Heading]

rr_RiskHeading

Principal Risks

Risk Narrative [Text Block]

rr_RiskNarrativeTextBlock

There is no assurance that the Fund will achieve its investment objective and you could lose part or all of your investment in the Fund. The Fund is not designed for investors who need an assured level of income and is intended to be a long-term investment. The Fund is not a complete investment program and may not be appropriate for all investors. Investors should carefully consider their own investment goals and risk tolerance before investing in the Fund. The principal risks of investing in the Fund are:

Equity Investments Risk

Equity securities generally are sinvesting in the Fund areubject to market risk. The Fund’s investments in equity securities may include common stocks, preferred stocks, securities convertible into or exchangeable for common stocks, REITs, ADRs and U.S. dollar-denominated foreign stocks traded on U.S. exchanges. Such investments may expose the Fund to additional risks.

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 traded on U.S. exchanges are subject to certain of the risks associated with investing directly in foreign securities. 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.

Foreign Exposure Risk

 The Fund may invest in securities issued by foreign companies through ADRs and U.S. dollar-denominated foreign stocks trading on U.S. exchanges. ADRs 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. Non-U.S. investments carry potential risks not associated with U.S. investments. Such risks include, but are not limited to: (1) currency exchange rate fluctuations, (2) political and financial instability, (3) less liquidity and greater volatility, (4) lack of uniform accounting, auditing and financial reporting standards, (5) increased price volatility, and (6) less government regulation and supervision of foreign stock exchanges, brokers and listed companies.

Futures Contracts Risk

Futures contracts are a type of derivative investment. A derivative refers to any financial instrument whose value is derived, at least in part, from the price of another security or a specified index, asset or rate. The use of derivatives presents risks different from, and possibly greater than, the risks associated with investing directly in traditional securities. Gains or losses in a derivative may be magnified and may be much greater than the derivatives original cost.

There may be an imperfect correlation between the changes in market value of the securities held by the Fund and the prices of futures contracts. There may not be a liquid secondary market for the futures contract. When the Fund purchases or sells a futures contract, it is subject to daily variation margin calls that could be substantial in the event of adverse price movements. If the Fund has insufficient cash to meet daily variation margin requirements, it might need to sell securities at a time when such sales are disadvantageous.

Investment Risk

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. Therefore, you may lose money by investing in the Fund.

Issuer Risk

The value of a security may decline for a number of reasons which directly relate to the issuer, such as management performance, financial leverage and reduced demand for the issuer’s goods or services, as well as the historical and prospective earnings of the issuer and the value of its assets.

Market Events Risk

Turbulence in financial markets and reduced liquidity in equity, credit and fixed-income markets may negatively affect many issuers worldwide which could adversely affect on the Fund.

Market Risk

Market risks, including political, regulatory, market and economic developments, and developments that impact specific economic sectors, industries or segments of the market, can affect the value of the Fund’s shares. The Fund’s equity investments are subject to stock market risk, which involves the possibility that the value of the Fund’s investments in stocks will decline due to drops in the stock market. From time to time, certain investments 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 holdings to meet redemption requests or other cash needs, the Fund may have to sell them at a loss.

Securities Lending Risk

To the extent the Fund lends its securities, it may be subject to the following risks. Borrowers of the Fund’s securities typically provide collateral in the form of cash that is reinvested in securities. The securities in which the collateral is invested may not perform sufficiently to cover the return collateral payments owed to borrowers. In addition, delays may occur in the recovery of securities from borrowers, which could interfere with the Fund’s ability to vote proxies or to settle transactions.

Securities Selection Risk

Securities selected by the Manager or 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.

Small Capitalization Companies Risk

Investing in the securities of small capitalization companies involves greater risk and the possibility of greater price volatility than investing in larger capitalization and more established companies, since small 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.

Value Stocks Risk

Value stocks are subject to the risk that their intrinsic value may never be realized by the market or that their prices may 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.

Risk Lose Money [Text]

rr_RiskLoseMoney

There is no assurance that the Fund will achieve its investment objective and you could lose part or all of your investment in the Fund.

Risk Not Insured Depository Institution [Text]

rr_RiskNotInsuredDepositoryInstitution

An investment in the Fund is not a deposit of a bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.

Bar Chart and Performance Table [Heading]

rr_BarChartAndPerformanceTableHeading

Fund Performance

Performance Narrative [Text Block]

rr_PerformanceNarrativeTextBlock

The bar chart and table below provide an indication of risk by showing 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® Small-Cap Value Funds Index, a composite of mutual funds comparable to the Fund.

The chart and the table below show the performance of the Fund’s Institutional Class shares for all periods. The Fund began operations of Advisor Class shares on May 1, 2003, 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 Investor Class shares is shown for Advisor Class, A Class and C Class shares and the performance of Institutional Class shares is shown for Y Class shares prior to the dates that the newer class shares were first offered. For Retirement Class shares, performance results before May 1, 2003 are for Investor Class shares and performance results from May 1, 2003 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.

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.

Performance Information Illustrates Variability of Returns [Text]

rr_PerformanceInformationIllustratesVariabilityOfReturns

The bar chart and table below provide an indication of risk by showing how the Fund's performance has varied from year to year.

Performance Availability Website Address [Text]

rr_PerformanceAvailabilityWebSiteAddress

www.americanbeaconfunds.com

Performance Past Does Not Indicate Future [Text]

rr_PerformancePastDoesNotIndicateFuture

Past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future.

Bar Chart [Heading]

rr_BarChartHeading

Calendar year total returns for Institutional Class shares

Bar Chart Narrative [Text Block]

rr_BarChartNarrativeTextBlock

Total Return for the Calendar Year Ended 12/31 of each Year

Bar Chart Does Not Reflect Sales Loads [Text]

rr_BarChartDoesNotReflectSalesLoads

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.

Bar Chart Closing [Text Block]

rr_BarChartClosingTextBlock

Highest Quarterly Return:	24.86%
(1/1/03 through 12/31/12)	(2nd Quarter 2003)
Lowest Quarterly Return:	-25.63%
(1/1/03 through 12/31/12)	(4th Quarter 2008)

Highest Quarterly Return, Label

rr_HighestQuarterlyReturnLabel

Highest Quarterly Return:

Highest Quarterly Return, Date

rr_BarChartHighestQuarterlyReturnDate

Jun. 30, 2003

Highest Quarterly Return

rr_BarChartHighestQuarterlyReturn

24.86%

Lowest Quarterly Return, Label

rr_LowestQuarterlyReturnLabel

Lowest Quarterly Return:

Lowest Quarterly Return, Date

rr_BarChartLowestQuarterlyReturnDate

Dec. 31, 2008

Lowest Quarterly Return

rr_BarChartLowestQuarterlyReturn

(25.63%)

Performance Table Heading

rr_PerformanceTableHeading

Average Annual Total Returns For the periods ended December 31, 2012

Performance Table Uses Highest Federal Rate

rr_PerformanceTableUsesHighestFederalRate

After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes.

Performance Table Not Relevant to Tax Deferred

rr_PerformanceTableNotRelevantToTaxDeferred

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.

Performance Table One Class of after Tax Shown [Text]

rr_PerformanceTableOneClassOfAfterTaxShown

After-tax returns are shown only for Institutional Class shares; after-tax returns for other share classes will vary.

Russell 2000 Value Index

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

18.05%

^[1]

5 Years

rr_AverageAnnualReturnYear05

3.55%

^[1]

10 Years

rr_AverageAnnualReturnYear10

9.50%

^[1]

Lipper Small-Cap Value Funds Index

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

15.56%

^[1]

5 Years

rr_AverageAnnualReturnYear05

4.33%

^[1]

10 Years

rr_AverageAnnualReturnYear10

10.20%

^[1]

Institutional Class

Risk/Return:

rr_RiskReturnAbstract

Maximum sales charge imposed on purchases (as a percentage of offering price)

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

none

Maximum deferred sales charge load (as a percentage of the lower of original offering price or redemption proceeds)

rr_MaximumDeferredSalesChargeOverOther

none

Management fees

rr_ManagementFeesOverAssets

0.46%

Distribution and/or service (12b-1) fees

rr_DistributionAndService12b1FeesOverAssets

none

Other expenses

rr_OtherExpensesOverAssets

0.36%

Acquired Fund Fees and Expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.10%

Total annual fund operating expenses

rr_ExpensesOverAssets

0.92%

^[2]

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

94

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

294

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

510

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

1,132

Annual Return 2003

rr_AnnualReturn2003

51.77%

Annual Return 2004

rr_AnnualReturn2004

23.51%

Annual Return 2005

rr_AnnualReturn2005

5.79%

Annual Return 2006

rr_AnnualReturn2006

14.68%

Annual Return 2007

rr_AnnualReturn2007

(6.44%)

Annual Return 2008

rr_AnnualReturn2008

(31.92%)

Annual Return 2009

rr_AnnualReturn2009

35.37%

Annual Return 2010

rr_AnnualReturn2010

26.19%

Annual Return 2011

rr_AnnualReturn2011

(4.05%)

Annual Return 2012

rr_AnnualReturn2012

16.52%

1 Year

rr_AverageAnnualReturnYear01

16.52%

^[1]

5 Years

rr_AverageAnnualReturnYear05

5.39%

^[1]

10 Years

rr_AverageAnnualReturnYear10

10.71%

^[1]

Inception Date

rr_AverageAnnualReturnInceptionDate

Dec. 31, 1998

^[1]

Institutional Class | After Taxes on Distributions

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

15.57%

^[1]

5 Years

rr_AverageAnnualReturnYear05

5.09%

^[1]

10 Years

rr_AverageAnnualReturnYear10

9.80%

^[1]

Institutional Class | After Taxes on Distributions and Sales

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

11.35%

^[1]

5 Years

rr_AverageAnnualReturnYear05

4.54%

^[1]

10 Years

rr_AverageAnnualReturnYear10

9.20%

^[1]

Investor Class

Risk/Return:

rr_RiskReturnAbstract

Maximum sales charge imposed on purchases (as a percentage of offering price)

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

none

Maximum deferred sales charge load (as a percentage of the lower of original offering price or redemption proceeds)

rr_MaximumDeferredSalesChargeOverOther

none

Management fees

rr_ManagementFeesOverAssets

0.46%

Distribution and/or service (12b-1) fees

rr_DistributionAndService12b1FeesOverAssets

none

Other expenses

rr_OtherExpensesOverAssets

0.72%

Acquired Fund Fees and Expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.10%

Total annual fund operating expenses

rr_ExpensesOverAssets

1.28%

^[2]

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

130

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

405

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

701

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

1,544

1 Year

rr_AverageAnnualReturnYear01

16.08%

^[1]

5 Years

rr_AverageAnnualReturnYear05

5.02%

^[1]

10 Years

rr_AverageAnnualReturnYear10

10.37%

^[1]

Inception Date

rr_AverageAnnualReturnInceptionDate

Feb. 28, 1999

^[1]

Advisor Class

Risk/Return:

rr_RiskReturnAbstract

Maximum sales charge imposed on purchases (as a percentage of offering price)

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

none

Maximum deferred sales charge load (as a percentage of the lower of original offering price or redemption proceeds)

rr_MaximumDeferredSalesChargeOverOther

none

Management fees

rr_ManagementFeesOverAssets

0.46%

Distribution and/or service (12b-1) fees

rr_DistributionAndService12b1FeesOverAssets

0.25%

Other expenses

rr_OtherExpensesOverAssets

0.61%

Acquired Fund Fees and Expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.10%

Total annual fund operating expenses

rr_ExpensesOverAssets

1.42%

^[2]

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

145

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

450

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

777

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

1,703

1 Year

rr_AverageAnnualReturnYear01

15.91%

^[1]

5 Years

rr_AverageAnnualReturnYear05

4.86%

^[1]

10 Years

rr_AverageAnnualReturnYear10

10.14%

^[1]

Inception Date

rr_AverageAnnualReturnInceptionDate

May 01, 2003

^[1]

Retirement Class

Risk/Return:

rr_RiskReturnAbstract

Maximum sales charge imposed on purchases (as a percentage of offering price)

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

none

Maximum deferred sales charge load (as a percentage of the lower of original offering price or redemption proceeds)

rr_MaximumDeferredSalesChargeOverOther

none

Management fees

rr_ManagementFeesOverAssets

0.46%

Distribution and/or service (12b-1) fees

rr_DistributionAndService12b1FeesOverAssets

0.50%

Other expenses

rr_OtherExpensesOverAssets

0.67%

Acquired Fund Fees and Expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.10%

Total annual fund operating expenses

rr_ExpensesOverAssets

1.73%

^[2]

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

176

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

546

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

940

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

2,042

1 Year

rr_AverageAnnualReturnYear01

15.58%

^[1]

5 Years

rr_AverageAnnualReturnYear05

4.66%

^[1]

10 Years

rr_AverageAnnualReturnYear10

10.03%

^[1]

Inception Date

rr_AverageAnnualReturnInceptionDate

May 01, 2009

^[1]

Y Class

Risk/Return:

rr_RiskReturnAbstract

Maximum sales charge imposed on purchases (as a percentage of offering price)

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

none

Maximum deferred sales charge load (as a percentage of the lower of original offering price or redemption proceeds)

rr_MaximumDeferredSalesChargeOverOther

none

Management fees

rr_ManagementFeesOverAssets

0.46%

Distribution and/or service (12b-1) fees

rr_DistributionAndService12b1FeesOverAssets

none

Other expenses

rr_OtherExpensesOverAssets

0.45%

Acquired Fund Fees and Expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.10%

Total annual fund operating expenses

rr_ExpensesOverAssets

1.01%

^[2]

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

103

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

321

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

557

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

1,235

1 Year

rr_AverageAnnualReturnYear01

16.39%

^[1]

5 Years

rr_AverageAnnualReturnYear05

5.27%

^[1]

10 Years

rr_AverageAnnualReturnYear10

10.65%

^[1]

Inception Date

rr_AverageAnnualReturnInceptionDate

Aug. 03, 2009

^[1]

A Class

Risk/Return:

rr_RiskReturnAbstract

Maximum sales charge imposed on purchases (as a percentage of offering price)

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

5.75%

Maximum deferred sales charge load (as a percentage of the lower of original offering price or redemption proceeds)

rr_MaximumDeferredSalesChargeOverOther

none

Management fees

rr_ManagementFeesOverAssets

0.46%

Distribution and/or service (12b-1) fees

rr_DistributionAndService12b1FeesOverAssets

0.25%

Other expenses

rr_OtherExpensesOverAssets

0.73%

Acquired Fund Fees and Expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.10%

Total annual fund operating expenses

rr_ExpensesOverAssets

1.54%

^[2]

Fee Waiver or Reimbursement

rr_FeeWaiverOrReimbursementOverAssets

(0.12%)

Total annual fund operating expenses after expense reduction and reimbursement

rr_NetExpensesOverAssets

1.42%

^[3]

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

711

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

1,021

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

1,355

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

2,294

1 Year

rr_AverageAnnualReturnYear01

15.91%

^[1]

5 Years

rr_AverageAnnualReturnYear05

4.92%

^[1]

10 Years

rr_AverageAnnualReturnYear10

10.32%

^[1]

Inception Date

rr_AverageAnnualReturnInceptionDate

May 17, 2010

^[1]

C Class

Risk/Return:

rr_RiskReturnAbstract

Maximum sales charge imposed on purchases (as a percentage of offering price)

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

none

Maximum deferred sales charge load (as a percentage of the lower of original offering price or redemption proceeds)

rr_MaximumDeferredSalesChargeOverOther

1.00%

Management fees

rr_ManagementFeesOverAssets

0.46%

Distribution and/or service (12b-1) fees

rr_DistributionAndService12b1FeesOverAssets

1.00%

Other expenses

rr_OtherExpensesOverAssets

0.75%

Acquired Fund Fees and Expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.10%

Total annual fund operating expenses

rr_ExpensesOverAssets

2.31%

^[2]

Fee Waiver or Reimbursement

rr_FeeWaiverOrReimbursementOverAssets

(0.14%)

Total annual fund operating expenses after expense reduction and reimbursement

rr_NetExpensesOverAssets

2.17%

^[3]

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

320

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

708

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

1,223

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

2,636

Expense Example, No Redemption, 1 Year

rr_ExpenseExampleNoRedemptionYear01

220

Expense Example, No Redemption, 3 Years

rr_ExpenseExampleNoRedemptionYear03

708

Expense Example, No Redemption, 5 Years

rr_ExpenseExampleNoRedemptionYear05

1,223

Expense Example, No Redemption, 10 Years

rr_ExpenseExampleNoRedemptionYear10

$ 2,636

1 Year

rr_AverageAnnualReturnYear01

15.05%

^[1]

5 Years

rr_AverageAnnualReturnYear05

4.53%

^[1]

10 Years

rr_AverageAnnualReturnYear10

10.12%

^[1]

Inception Date

rr_AverageAnnualReturnInceptionDate

Sep. 01, 2010

^[1]

[1] 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.

[2] The Total Annual Fund Operating Expenses do not correlate to the ratio of expenses to average net assets provided in the Fund's Financial Highlights table, which reflects the operating expenses of the Fund and does not include Acquired Fund Fees and Expenses.

[3] The Manager has contractually agreed to reduce and/or reimburse the A Class and C Class of the Fund for Other Expenses, as applicable, through February 28, 2014 to the extent that Total Annual Fund Operating Expenses exceed 1.32% for the A Class and 2.07% 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.

XML

Label

Element

Value

Risk/Return:

rr_RiskReturnAbstract

Risk/Return [Heading]

rr_RiskReturnHeading

American Beacon Intermediate Bond Fund

Objective [Heading]

rr_ObjectiveHeading

Investment Objective

Objective, Primary [Text Block]

rr_ObjectivePrimaryTextBlock

The Fund’s investment objective is income and capital appreciation.

Expense [Heading]

rr_ExpenseHeading

Fees and Expenses of the Fund

Expense Narrative [Text Block]

rr_ExpenseNarrativeTextBlock

This table describes the fees and expenses that you may pay if you buy and hold shares of the Fund. You may qualify for sales discounts if you and your eligible family members invest, or agree to invest in the future, at least $50,000 in 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 101 of the Prospectus and “Additional Purchase and Sale Information for A Class Shares” on page 78 of the statement of additional information.

Shareholder Fees Caption [Text]

rr_ShareholderFeesCaption

Shareholder Fees (fees paid directly from your investment)

Operating Expenses Caption [Text]

rr_OperatingExpensesCaption

Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)

Fee Waiver or Reimbursement over Assets, Date of Termination

rr_FeeWaiverOrReimbursementOverAssetsDateOfTermination

2014-02-28

Portfolio Turnover [Heading]

rr_PortfolioTurnoverHeading

Portfolio Turnover

Portfolio Turnover [Text Block]

rr_PortfolioTurnoverTextBlock

The Fund pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when fund shares are held in a taxable account. These costs, which are not reflected in annual fund operating expenses or in the example, affect the Fund’s performance. During the most recent fiscal year, the Fund’s portfolio turnover rate was 144% of the average value of its portfolio.

Portfolio Turnover, Rate

rr_PortfolioTurnoverRate

144.00%

Expense Breakpoint Discounts [Text]

rr_ExpenseBreakpointDiscounts

You may qualify for sales discounts if you and your eligible family members invest, or agree to invest in the future, at least $50,000 in the A Class shares of the American Beacon Funds.

Expense Breakpoint, Minimum Investment Required [Amount]

rr_ExpenseBreakpointMinimumInvestmentRequiredAmount

$ 50,000

Expenses Not Correlated to Ratio Due to Acquired Fund Fees [Text]

rr_ExpensesNotCorrelatedToRatioDueToAcquiredFundFees

The Total Annual Fund Operating Expenses do not correlate to the ratio of expenses to average net assets provided in the Fund's Financial Highlights table, which reflects the operating expenses of the Fund and does not include Acquired Fund Fees and Expenses.

Expense Example [Heading]

rr_ExpenseExampleHeading

Example

Expense Example Narrative [Text Block]

rr_ExpenseExampleNarrativeTextBlock

This Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return each year and that the Fund’s operating expenses remain the same. Although your actual costs may be higher or lower, based on these assumptions, your costs would be:

Expense Example, No Redemption, By Year, Caption [Text]

rr_ExpenseExampleNoRedemptionByYearCaption

Assuming no redemption of shares:

Strategy [Heading]

rr_StrategyHeading

Principal Investment Strategies

Strategy Narrative [Text Block]

rr_StrategyNarrativeTextBlock

Under normal circumstances, the Fund invests at least 80% of its net assets (plus the amount of any borrowings for investment purposes) in obligations of the U.S. Government, its agencies and instrumentalities, including U.S. 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, Yankeedollar and Eurodollar bank certificates of deposit, time deposits, bankers' acceptances and other notes. These types of obligations are commonly referred to as fixed-income securities or bonds. The Fund seeks capital appreciation by investing in corporate issues whose relative value is expected to increase over time.

The Manager currently allocates the Fund’s assets between itself and a sub-advisor. The Manager believes that this strategy may help the Fund outperform other investment styles over the longer term while reducing volatility and downside risk.

In determining which securities to buy and sell, the Manager employs a top-down fixed-income investment strategy, as follows:

u Develop an overall investment strategy, including a portfolio duration target, by examining the current trends in the U.S. economy.

u 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.

u Determine the weightings of each security type by analyzing the difference in yield spreads between corporate and U.S. Government securities.

u Select specific debt securities within each security type.

u Review and monitor portfolio composition for changes in credit, risk-return profile and comparisons with benchmarks.

The sub-advisor uses a bottom-up fixed-income investment strategy in determining which securities to buy and sell, as follows:

u Search for eligible securities with a yield to maturity advantage versus a U.S. Government security with a similar maturity.

u Evaluate credit quality of the securities.

u Perform an analysis of the expected total return of the securities to changes in interest rates compared to the Barclays Capital U.S. Aggregate Bond Index.

The Fund will only buy debt securities that are determined by the Manager or sub-advisor to be investment grade at the time of purchase. If an investment held by the Fund is downgraded below investment grade, the Manager or sub-advisor will take action that they believe to be advantageous to the Fund. Under normal circumstances, the Fund seeks to maintain a duration of three to seven years. A duration of “one year” means that a security’s price would be expected to decrease by approximately 1% with a 1% increase in interest rates.

The Fund may also invest cash balances in other investment companies to gain market exposure on cash balances or reduce market exposure in anticipation of liquidity needs.

Risk [Heading]

rr_RiskHeading

Principal Risks

Risk Narrative [Text Block]

rr_RiskNarrativeTextBlock

There is no assurance that the Fund will achieve its investment objective and you could lose part or all of your investment in the Fund. The Fund is not 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:

Credit Risk

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’s credit rating can cause the price of its bonds to go down.

Foreign Exposure Risk

The Fund may invest in U.S. dollar-denominated bonds issued by foreign companies or foreign governments. Investing in foreign companies carries potential risks not associated with domestic investments. Such risks include, but are not limited to: (1) currency exchange rate fluctuations, (2) political and financial instability, (3) less liquidity and greater volatility, (4) lack of uniform accounting, auditing and financial reporting standards; (5) increased price volatility; and (6) less government regulation and supervision of foreign stock exchanges, brokers and listed companies.

Government-Sponsored Enterprises Risk

Securities held by the Fund that are issued by government-sponsored enterprises, such as the Federal National Mortgage Association (“Fannie Mae”), the Federal Home Loan Mortgage Corporation (“Freddie Mac”), 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.

High Portfolio Turnover Risk

Portfolio turnover is a measure of a Fund’s trading activity over a one-year period. A portfolio turnover rate of 100% would indicate that a Fund sold and replaced the entire value of its securities holdings during the period. High portfolio turnover could increase a Fund’s transaction costs and possibly have a negative impact on performance. Frequent trading by a Fund could also result in increased short-term capital gain distributions to shareholders, which are taxable as ordinary income.

Interest Rate Risk

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.

Investment Risk

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. Therefore, you may lose money by investing in the Fund.

Issuer Risk

The value of a security may decline for a number of reasons which directly relate to the issuer, such as management performance, financial leverage and reduced demand for the issuer’s goods or services, as well as the historical and prospective earnings of the issuer and the value of its assets.

Market Events Risk

Turbulence in financial markets and reduced liquidity in credit and fixed-income markets may negatively affect many issuers worldwide which could adversely affect the Fund.

Market Risk

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’s investments will decline due to drops in the overall bond market. Changes in the economic climate, investor perceptions, and stock market volatility can cause the prices of the Fund’s investments to decline, regardless of the financial conditions of the issuers held by the Fund. From time to time, certain investments 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 holdings to meet redemption requests or other cash needs, the Fund may have to sell them at a loss.

Other Investment Companies Risk

The Fund may invest in shares of other registered investment companies, including open-end funds, and money market funds. To the extent that the Fund invests in shares of other registered investment companies, you will indirectly bear fees and expenses charged by the underlying funds in addition to the Fund’s direct fees and expenses and will be subject to the risks associated with investments in those funds.

Prepayment and Extension Risk

The Fund’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’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’s effective maturity and a decline in its price.

Securities Selection Risk

Securities selected by the Manager or 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.

U.S. Government Securities Risk

A security backed by the U.S. Treasury or the full faith and credit of the United States is guaranteed only as to the timely payment of interest and principal when held to maturity. The market prices for such securities are not guaranteed and will fluctuate. They are also subject to credit risk and interest rate risk.

Risk Lose Money [Text]

rr_RiskLoseMoney

There is no assurance that the Fund will achieve its investment objective and you could lose part or all of your investment in the Fund.

Risk Not Insured Depository Institution [Text]

rr_RiskNotInsuredDepositoryInstitution

An investment in the Fund is not a deposit of a bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.

Bar Chart and Performance Table [Heading]

rr_BarChartAndPerformanceTableHeading

Fund Performance

Performance Narrative [Text Block]

rr_PerformanceNarrativeTextBlock

The bar chart and table below provide an indication of risk by showing 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 Intermediate Investment Grade Index, a composite of mutual funds comparable to the Fund. Performance shown in the chart and tables below reflects the Fund’s one-time receipt in December 2006 of class action settlement proceeds that were related to investment activity in 2002. The Fund’s performance for all periods that include December 2006 was significantly higher than it would have been absent receipt of the settlement proceeds.

The chart and the table below show the performance of the Fund’s Institutional Class shares for all periods. The Fund began operations of Investor Class shares on March 1, 2009, 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 Institutional Class is shown for Y Class shares, Investor Class shares, A Class shares and C Class shares before March 1, 2009. The performance of the Investor Class shares is shown for the A Class and C Class shares from March 2, 2009 to the inception of both the A Class and C 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 share classes had lower expenses, their performance was better than the newer share 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.

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.

Performance Information Illustrates Variability of Returns [Text]

rr_PerformanceInformationIllustratesVariabilityOfReturns

The bar chart and table below provide an indication of risk by showing how the Fund's performance has varied from year to year.

Performance Availability Website Address [Text]

rr_PerformanceAvailabilityWebSiteAddress

www.americanbeaconfunds.com

Performance Past Does Not Indicate Future [Text]

rr_PerformancePastDoesNotIndicateFuture

Past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future.

Bar Chart [Heading]

rr_BarChartHeading

Calendar year total returns for Institutional Class shares

Bar Chart Narrative [Text Block]

rr_BarChartNarrativeTextBlock

Total Return for the Calendar Year Ended 12/31 of each Year

Bar Chart Does Not Reflect Sales Loads [Text]

rr_BarChartDoesNotReflectSalesLoads

Sales charges are not reflected in the bar chart and table below.

Bar Chart Closing [Text Block]

rr_BarChartClosingTextBlock

Highest Quarterly Return:	4.91%
(1/1/03 through 12/31/12)	(4th Quarter 2008)
Lowest Quarterly Return:	-2.75%
(1/1/03 through 12/31/12)	(2nd Quarter 2004)

Highest Quarterly Return, Label

rr_HighestQuarterlyReturnLabel

Highest Quarterly Return:

Highest Quarterly Return, Date

rr_BarChartHighestQuarterlyReturnDate

Dec. 31, 2008

Highest Quarterly Return

rr_BarChartHighestQuarterlyReturn

4.91%

Lowest Quarterly Return, Label

rr_LowestQuarterlyReturnLabel

Lowest Quarterly Return:

Lowest Quarterly Return, Date

rr_BarChartLowestQuarterlyReturnDate

Jun. 30, 2004

Lowest Quarterly Return

rr_BarChartLowestQuarterlyReturn

(2.75%)

Performance Table Heading

rr_PerformanceTableHeading

Average Annual Total Returns For the periods ended December 31, 2012

Performance Table Uses Highest Federal Rate

rr_PerformanceTableUsesHighestFederalRate

After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes.

Performance Table Not Relevant to Tax Deferred

rr_PerformanceTableNotRelevantToTaxDeferred

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.

Performance Table One Class of after Tax Shown [Text]

rr_PerformanceTableOneClassOfAfterTaxShown

After-tax returns are shown only for Institutional Class shares; after-tax returns for other share classes will vary.

Barclays Capital U.S. Aggregate Bond Index

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

4.21%

^[1]

5 Years

rr_AverageAnnualReturnYear05

5.95%

^[1]

10 Years

rr_AverageAnnualReturnYear10

5.18%

^[1]

Lipper Intermediate Investment Grade Index

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

7.82%

^[1]

5 Years

rr_AverageAnnualReturnYear05

6.28%

^[1]

10 Years

rr_AverageAnnualReturnYear10

5.31%

^[1]

Institutional Class

Risk/Return:

rr_RiskReturnAbstract

Maximum sales charge imposed on purchases (as a percentage of offering price)

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

none

Maximum deferred sales charge load (as a percentage of the lower of original offering price or redemption proceeds)

rr_MaximumDeferredSalesChargeOverOther

none

Management fees

rr_ManagementFeesOverAssets

0.20%

Distribution and/or service (12b-1) fees

rr_DistributionAndService12b1FeesOverAssets

none

Other expenses

rr_OtherExpensesOverAssets

0.13%

Acquired Fund Fees and Expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.01%

Total annual fund operating expenses

rr_ExpensesOverAssets

0.34%

^[2]

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

35

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

109

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

191

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

431

Annual Return 2004

rr_AnnualReturn2004

4.39%

Annual Return 2005

rr_AnnualReturn2005

1.32%

Annual Return 2006

rr_AnnualReturn2006

5.60%

Annual Return 2007

rr_AnnualReturn2007

6.67%

Annual Return 2008

rr_AnnualReturn2008

(4.37%)

Annual Return 2009

rr_AnnualReturn2009

14.21%

Annual Return 2010

rr_AnnualReturn2010

7.36%

Annual Return 2011

rr_AnnualReturn2011

2.62%

Annual Return 2012

rr_AnnualReturn2012

4.98%

1 Year

rr_AverageAnnualReturnYear01

4.98%

^[1]

5 Years

rr_AverageAnnualReturnYear05

6.03%

^[1]

10 Years

rr_AverageAnnualReturnYear10

5.24%

^[1]

Inception Date

rr_AverageAnnualReturnInceptionDate

Sep. 15, 1997

^[1]

Institutional Class | After Taxes on Distributions

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

3.73%

^[1]

5 Years

rr_AverageAnnualReturnYear05

4.25%

^[1]

10 Years

rr_AverageAnnualReturnYear10

3.66%

^[1]

Institutional Class | After Taxes on Distributions and Sales

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

3.35%

^[1]

5 Years

rr_AverageAnnualReturnYear05

4.30%

^[1]

10 Years

rr_AverageAnnualReturnYear10

3.56%

^[1]

Investor Class

Risk/Return:

rr_RiskReturnAbstract

Maximum sales charge imposed on purchases (as a percentage of offering price)

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

none

Maximum deferred sales charge load (as a percentage of the lower of original offering price or redemption proceeds)

rr_MaximumDeferredSalesChargeOverOther

none

Management fees

rr_ManagementFeesOverAssets

0.20%

Distribution and/or service (12b-1) fees

rr_DistributionAndService12b1FeesOverAssets

none

Other expenses

rr_OtherExpensesOverAssets

0.64%

Acquired Fund Fees and Expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.01%

Total annual fund operating expenses

rr_ExpensesOverAssets

0.85%

^[2]

Fee Waiver or Reimbursement

rr_FeeWaiverOrReimbursementOverAssets

(0.05%)

Total annual fund operating expenses after expense reduction and reimbursement

rr_NetExpensesOverAssets

0.80%

^[3]

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

82

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

266

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

466

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

1,043

1 Year

rr_AverageAnnualReturnYear01

4.50%

^[1]

5 Years

rr_AverageAnnualReturnYear05

5.64%

^[1]

10 Years

rr_AverageAnnualReturnYear10

5.04%

^[1]

Inception Date

rr_AverageAnnualReturnInceptionDate

Mar. 02, 2009

^[1]

Y Class

Risk/Return:

rr_RiskReturnAbstract

Maximum sales charge imposed on purchases (as a percentage of offering price)

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

none

Maximum deferred sales charge load (as a percentage of the lower of original offering price or redemption proceeds)

rr_MaximumDeferredSalesChargeOverOther

none

Management fees

rr_ManagementFeesOverAssets

0.20%

Distribution and/or service (12b-1) fees

rr_DistributionAndService12b1FeesOverAssets

none

Other expenses

rr_OtherExpensesOverAssets

0.79%

Acquired Fund Fees and Expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.01%

Total annual fund operating expenses

rr_ExpensesOverAssets

1.00%

^[2]

Fee Waiver or Reimbursement

rr_FeeWaiverOrReimbursementOverAssets

(0.34%)

Total annual fund operating expenses after expense reduction and reimbursement

rr_NetExpensesOverAssets

0.66%

^[3]

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

67

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

284

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

519

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

1,194

1 Year

rr_AverageAnnualReturnYear01

4.65%

^[1]

5 Years

rr_AverageAnnualReturnYear05

5.94%

^[1]

10 Years

rr_AverageAnnualReturnYear10

5.19%

^[1]

Inception Date

rr_AverageAnnualReturnInceptionDate

Mar. 01, 2010

^[1]

A Class

Risk/Return:

rr_RiskReturnAbstract

Maximum sales charge imposed on purchases (as a percentage of offering price)

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

4.75%

Maximum deferred sales charge load (as a percentage of the lower of original offering price or redemption proceeds)

rr_MaximumDeferredSalesChargeOverOther

none

Management fees

rr_ManagementFeesOverAssets

0.20%

Distribution and/or service (12b-1) fees

rr_DistributionAndService12b1FeesOverAssets

0.25%

Other expenses

rr_OtherExpensesOverAssets

0.67%

Acquired Fund Fees and Expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.01%

Total annual fund operating expenses

rr_ExpensesOverAssets

1.13%

^[2]

Fee Waiver or Reimbursement

rr_FeeWaiverOrReimbursementOverAssets

(0.13%)

Total annual fund operating expenses after expense reduction and reimbursement

rr_NetExpensesOverAssets

1.00%

^[3]

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

572

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

805

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

1,056

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

1,774

1 Year

rr_AverageAnnualReturnYear01

4.30%

^[1]

5 Years

rr_AverageAnnualReturnYear05

5.54%

^[1]

10 Years

rr_AverageAnnualReturnYear10

5.00%

^[1]

Inception Date

rr_AverageAnnualReturnInceptionDate

May 17, 2010

^[1]

C Class

Risk/Return:

rr_RiskReturnAbstract

Maximum sales charge imposed on purchases (as a percentage of offering price)

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

none

Maximum deferred sales charge load (as a percentage of the lower of original offering price or redemption proceeds)

rr_MaximumDeferredSalesChargeOverOther

1.00%

Management fees

rr_ManagementFeesOverAssets

0.20%

Distribution and/or service (12b-1) fees

rr_DistributionAndService12b1FeesOverAssets

1.00%

Other expenses

rr_OtherExpensesOverAssets

0.67%

Acquired Fund Fees and Expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.01%

Total annual fund operating expenses

rr_ExpensesOverAssets

1.88%

^[2]

Fee Waiver or Reimbursement

rr_FeeWaiverOrReimbursementOverAssets

(0.13%)

Total annual fund operating expenses after expense reduction and reimbursement

rr_NetExpensesOverAssets

1.75%

^[3]

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

278

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

578

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

1,004

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

2,190

Expense Example, No Redemption, 1 Year

rr_ExpenseExampleNoRedemptionYear01

178

Expense Example, No Redemption, 3 Years

rr_ExpenseExampleNoRedemptionYear03

578

Expense Example, No Redemption, 5 Years

rr_ExpenseExampleNoRedemptionYear05

1,004

Expense Example, No Redemption, 10 Years

rr_ExpenseExampleNoRedemptionYear10

$ 2,190

1 Year

rr_AverageAnnualReturnYear01

3.52%

^[1]

5 Years

rr_AverageAnnualReturnYear05

5.18%

^[1]

10 Years

rr_AverageAnnualReturnYear10

4.82%

^[1]

Inception Date

rr_AverageAnnualReturnInceptionDate

Sep. 01, 2010

^[1]

[1] 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.

[2] The Total Annual Fund Operating Expenses do not correlate to the ratio of expenses to average net assets provided in the Fund's Financial Highlights table, which reflects the operating expenses of the Fund and does not include Acquired Fund Fees and Expenses.

[3] The Manager has contractually agreed to reduce and/or reimburse the A Class, C Class, Y Class and Investor Class of the Fund for Other Expenses through February 28, 2014 to the extent that Total Annual Fund Operating Expenses exceed 0.99% for the A Class, 1.74% for the C Class, 0.65% for the Y Class and 0.79% for the Investor Class(excluding taxes, brokerage commissions, acquired fund fees and expenses and other extraordinary expenses such as litigation). The contractual expense reimbursement 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 Managers (a) occurs within three years after the Manager's own reduction or reimbursement and (b) does not cause the Total Annual Fund Operating Expenses to exceed the percentage limit contractually agreed.

XML

American Beacon High Yield Bond Fund | American Beacon High Yield Bond Fund

American Beacon High Yield Bond Fund

Investment Objective

The Fund’s investment objective is high current income and capital appreciation.

Fees and Expenses of the Fund

This table describes the fees and expenses that you may pay if you buy and hold shares of the Fund.

Shareholder Fees (fees paid directly from your investment)

Shareholder Fees	American Beacon High Yield Bond Fund AMR Class
Redemption fee (as a percentage of amount redeemed; applies to the proceeds of shares redeemed within 90 days of purchase)	2.00%

Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)

Annual Fund Operating Expenses		American Beacon High Yield Bond Fund AMR Class
Management fees		0.43%
Distribution and/or service (12b-1) fees		none
Other expenses		0.19%
Acquired Fund Fees and Expenses		0.01%
Total annual fund operating expenses	[1]	0.63%

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 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:

Expense Example (USD $)	1 year	3 years	5 years	10 years
American Beacon High Yield Bond Fund AMR Class	64	201	350	786

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 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 100% of the average value of its portfolio.

Principal Investment Strategies

This Fund seeks to maximize current income by investing in a diversified portfolio of public and private issue debt securities that are generally rated below investment grade (such as BB or lower by Standard & Poor’s Ratings Services or Fitch Inc., and/or Ba or lower by Moody’s Investors Service, Inc.) or deemed to be below investment grade by an investment sub-advisor. These types of securities are commonly referred to as “high yield bonds” or “junk bonds.” The Fund seeks capital appreciation by investing in issues whose relative value is expected to increase over time. The Fund has no limitations regarding the maturities of the debt securities it can buy or the market capitalization of the issuers of those securities.

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 reducing volatility and downside risk.

The Fund seeks its investment objective by investing, under normal circumstances, at least 80% of its net assets (plus the amount of any borrowings for investment purposes) in a diversified portfolio of domestic and foreign high yield bonds. High yield issuers are generally those which have below investment grade ratings because they are relatively small in size, relatively young in years, relatively leveraged financially (perhaps borrowing heavily to finance expansion or due to a leveraged buyout), or formerly “blue chip” companies that have encountered some financial difficulties.

In selecting investments, the Fund’s sub-advisors utilize a bottom-up and research-driven investment process that relies heavily on internal research and fundamental credit analysis. The investment philosophy of each sub-advisor concentrates on identification of relative value and downside protection.

To a lesser extent, the Fund may invest in other securities, including investment grade securities, foreign securities, common and preferred stocks and convertible securities, in keeping with the Fund’s overall investment objective.

The Fund may also invest cash balances in other investment companies to gain market exposure on cash balances or reduce market exposure in anticipation of liquidity needs.

Principal Risks

There is no assurance that the Fund will achieve its investment objective and you could lose part or all of your investment in the Fund. The Fund is designed primarily for investors seeking current income from a fund that invests mainly in a variety of high-yield, high-risk debt securities. Those investors should be willing to assume the credit risks of a fund that typically invests a significant amount of its assets in below investment-grade debt securities and the price changes in those securities that can occur when interest rates change. The Fund is not designed for investors who need an assured level of current income and is intended to be a long-term investment. The Fund is not a complete investment program and may not be appropriate for all investors. Investors should carefully consider their own investment goals and risk tolerance before investing in the Fund. The principal risks of investing in the Fund are:

Credit Risk

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’s credit rating can cause the price of its bonds to go down. Since the Fund invests in lower-quality debt securities considered speculative in nature, this risk will be substantial.

Equity Investments Risk

Equity securities generally are subject to market risk. The Fund’s investments in equity securities may include common and preferred stocks and convertible securities.  Such investments may expose the Fund to additional risks.

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 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.

Foreign Investing Risk

Non U.S. investments carry potential risks not associated with U.S. investments. Such risks include, but are not limited to: (1) currency exchange rate fluctuations, (2) political and financial instability, (3) less liquidity and greater volatility, (4) lack of uniform accounting, auditing and financial reporting standards, (5) increased price volatility; (6) less government regulation and supervision of foreign stock exchanges, brokers and listed companies; and (7) delays in transaction settlement in some foreign markets.

High Portfolio Turnover Risk

Portfolio turnover is a measure of a Fund’s trading activity over a one-year period. A portfolio turnover rate of 100% would indicate that a Fund sold and replaced the entire value of its securities holdings during the period. High portfolio turnover could increase a Fund’s transaction costs and possibly have a negative impact on performance. Frequent trading by a Fund could also result in increased short-term capital gain distributions to shareholders, which are taxable as ordinary income.

High Yield Securities Risk

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’s ability to repay principal and interest obligations. Issuers of lower-rated securities also have a greater risk of default or bankruptcy.

Interest Rate Risk

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.

Investment Risk

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. Therefore, you may lose money by investing in the Fund.

Issuer Risk

The value of a security may decline for a number of reasons which directly relate to the issuer, such as management performance, financial leverage and reduced demand for the issuer’s goods or services, as well as the historical and prospective earnings of the issuer and the value of its assets.

Market Events Risk

Turbulence in financial markets and reduced liquidity in equity, credit and fixed-income markets may negatively affect many issuers worldwide which could adversely affect the Fund.

Market Risk

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’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’s investments to decline, regardless of the financial conditions of the issuers held by the Fund. From time to time, certain investments 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 holdings to meet redemption requests, the Fund may have to sell them at a loss.

Market Timing Risk

Because the Fund invests in high yield bonds that may lack market liquidity, it is subject to the risk of market timing activities. The limited trading activity of some high yield bonds may result in market prices that do not reflect the true market value of these illiquid securities. In such instances, the Fund may fair value illiquid securities. However, some investors may engage in frequent short-term trading in the Fund to take advantage of any price differentials that may be reflected in the net asset value of the Fund’s shares. There is no assurance that fair valuation of securities can reduce or eliminate market timing. While the Manager monitors trading in Fund shares, there is no guarantee that it can detect all market timing activities.

Securities Selection Risk

Securities selected by the Manager or 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.

Small and Medium Capitalization Companies Risk

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.

Unrated Securities Risk

Some unrated securities may not have an active trading market or may be difficult to value, which means the Fund might have difficulty selling them promptly at an acceptable price.

Fund Performance

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® High Current Yield Bond Funds Index, a composite of mutual funds comparable to the Fund. You may obtain updated performance information on the Fund’s website at www.americanbeaconfunds.com. Past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future.

Total Return for the Calendar Year Ended 12/31 of each Year

Highest Quarterly Return:	19.38%
(1/1/03 through 12/31/12)	(2nd Quarter 2009)
Lowest Quarterly Return:	-18.46%
(1/1/03 through 12/31/12)	(4th Quarter 2008)

Average Annual Total Returns For the periods ended December 31, 2012

Average Annual Returns American Beacon High Yield Bond Fund	1 Year	5 Years	10 Years
AMR Class	15.56%	7.99%	8.19%
JP Morgan® Global High-Yield Index	16.21%	10.45%	10.70%
Lipper High Current Yield Bond Funds Index	15.40%	7.73%	8.89%

[1] The Total Annual Fund Operating Expenses do not correlate to the ratio of expenses to average net assets provided in the Fund's Financial Highlights table, which reflects the operating expenses of the Fund and does not include Acquired Fund Fees and Expenses.

XML

Label

Element

Value

Risk/Return:

rr_RiskReturnAbstract

Risk/Return [Heading]

rr_RiskReturnHeading

American Beacon High Yield Bond Fund

Objective [Heading]

rr_ObjectiveHeading

Investment Objective

Objective, Primary [Text Block]

rr_ObjectivePrimaryTextBlock

The Fund’s investment objective is high current income and capital appreciation.

Expense [Heading]

rr_ExpenseHeading

Fees and Expenses of the Fund

Expense Narrative [Text Block]

rr_ExpenseNarrativeTextBlock

This table describes the fees and expenses that you may pay if you buy and hold shares of the Fund.

Shareholder Fees Caption [Text]

rr_ShareholderFeesCaption

Shareholder Fees (fees paid directly from your investment)

Operating Expenses Caption [Text]

rr_OperatingExpensesCaption

Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)

Portfolio Turnover [Heading]

rr_PortfolioTurnoverHeading

Portfolio Turnover

Portfolio Turnover [Text Block]

rr_PortfolioTurnoverTextBlock

The Fund pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when fund shares are held in a taxable account. These costs, which are not reflected in annual fund operating expenses or in the example, affect the Fund’s performance. During the most recent fiscal year, the Fund’s portfolio turnover rate was 100% of the average value of its portfolio.

Portfolio Turnover, Rate

rr_PortfolioTurnoverRate

100.00%

Expenses Not Correlated to Ratio Due to Acquired Fund Fees [Text]

rr_ExpensesNotCorrelatedToRatioDueToAcquiredFundFees

The Total Annual Fund Operating Expenses do not correlate to the ratio of expenses to average net assets provided in the Fund's Financial Highlights table, which reflects the operating expenses of the Fund and does not include Acquired Fund Fees and Expenses.

Expense Example [Heading]

rr_ExpenseExampleHeading

Example

Expense Example Narrative [Text Block]

rr_ExpenseExampleNarrativeTextBlock

This Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return each year and that the Fund’s operating expenses remain the same. Although your actual costs may be higher or lower, based on these assumptions, your costs would be:

Strategy [Heading]

rr_StrategyHeading

Principal Investment Strategies

Strategy Narrative [Text Block]

rr_StrategyNarrativeTextBlock

This Fund seeks to maximize current income by investing in a diversified portfolio of public and private issue debt securities that are generally rated below investment grade (such as BB or lower by Standard & Poor’s Ratings Services or Fitch Inc., and/or Ba or lower by Moody’s Investors Service, Inc.) or deemed to be below investment grade by an investment sub-advisor. These types of securities are commonly referred to as “high yield bonds” or “junk bonds.” The Fund seeks capital appreciation by investing in issues whose relative value is expected to increase over time. The Fund has no limitations regarding the maturities of the debt securities it can buy or the market capitalization of the issuers of those securities.

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 reducing volatility and downside risk.

The Fund seeks its investment objective by investing, under normal circumstances, at least 80% of its net assets (plus the amount of any borrowings for investment purposes) in a diversified portfolio of domestic and foreign high yield bonds. High yield issuers are generally those which have below investment grade ratings because they are relatively small in size, relatively young in years, relatively leveraged financially (perhaps borrowing heavily to finance expansion or due to a leveraged buyout), or formerly “blue chip” companies that have encountered some financial difficulties.

In selecting investments, the Fund’s sub-advisors utilize a bottom-up and research-driven investment process that relies heavily on internal research and fundamental credit analysis. The investment philosophy of each sub-advisor concentrates on identification of relative value and downside protection.

To a lesser extent, the Fund may invest in other securities, including investment grade securities, foreign securities, common and preferred stocks and convertible securities, in keeping with the Fund’s overall investment objective.

The Fund may also invest cash balances in other investment companies to gain market exposure on cash balances or reduce market exposure in anticipation of liquidity needs.

Risk [Heading]

rr_RiskHeading

Principal Risks

Risk Narrative [Text Block]

rr_RiskNarrativeTextBlock

There is no assurance that the Fund will achieve its investment objective and you could lose part or all of your investment in the Fund. The Fund is designed primarily for investors seeking current income from a fund that invests mainly in a variety of high-yield, high-risk debt securities. Those investors should be willing to assume the credit risks of a fund that typically invests a significant amount of its assets in below investment-grade debt securities and the price changes in those securities that can occur when interest rates change. The Fund is not designed for investors who need an assured level of current income and is intended to be a long-term investment. The Fund is not a complete investment program and may not be appropriate for all investors. Investors should carefully consider their own investment goals and risk tolerance before investing in the Fund. The principal risks of investing in the Fund are:

Credit Risk

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’s credit rating can cause the price of its bonds to go down. Since the Fund invests in lower-quality debt securities considered speculative in nature, this risk will be substantial.

Equity Investments Risk

Equity securities generally are subject to market risk. The Fund’s investments in equity securities may include common and preferred stocks and convertible securities.  Such investments may expose the Fund to additional risks.

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 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.

Foreign Investing Risk

Non U.S. investments carry potential risks not associated with U.S. investments. Such risks include, but are not limited to: (1) currency exchange rate fluctuations, (2) political and financial instability, (3) less liquidity and greater volatility, (4) lack of uniform accounting, auditing and financial reporting standards, (5) increased price volatility; (6) less government regulation and supervision of foreign stock exchanges, brokers and listed companies; and (7) delays in transaction settlement in some foreign markets.

High Portfolio Turnover Risk

Portfolio turnover is a measure of a Fund’s trading activity over a one-year period. A portfolio turnover rate of 100% would indicate that a Fund sold and replaced the entire value of its securities holdings during the period. High portfolio turnover could increase a Fund’s transaction costs and possibly have a negative impact on performance. Frequent trading by a Fund could also result in increased short-term capital gain distributions to shareholders, which are taxable as ordinary income.

High Yield Securities Risk

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’s ability to repay principal and interest obligations. Issuers of lower-rated securities also have a greater risk of default or bankruptcy.

Interest Rate Risk

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.

Investment Risk

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. Therefore, you may lose money by investing in the Fund.

Issuer Risk

The value of a security may decline for a number of reasons which directly relate to the issuer, such as management performance, financial leverage and reduced demand for the issuer’s goods or services, as well as the historical and prospective earnings of the issuer and the value of its assets.

Market Events Risk

Turbulence in financial markets and reduced liquidity in equity, credit and fixed-income markets may negatively affect many issuers worldwide which could adversely affect the Fund.

Market Risk

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’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’s investments to decline, regardless of the financial conditions of the issuers held by the Fund. From time to time, certain investments 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 holdings to meet redemption requests, the Fund may have to sell them at a loss.

Market Timing Risk

Because the Fund invests in high yield bonds that may lack market liquidity, it is subject to the risk of market timing activities. The limited trading activity of some high yield bonds may result in market prices that do not reflect the true market value of these illiquid securities. In such instances, the Fund may fair value illiquid securities. However, some investors may engage in frequent short-term trading in the Fund to take advantage of any price differentials that may be reflected in the net asset value of the Fund’s shares. There is no assurance that fair valuation of securities can reduce or eliminate market timing. While the Manager monitors trading in Fund shares, there is no guarantee that it can detect all market timing activities.

Securities Selection Risk

Securities selected by the Manager or 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.

Small and Medium Capitalization Companies Risk

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.

Unrated Securities Risk

Some unrated securities may not have an active trading market or may be difficult to value, which means the Fund might have difficulty selling them promptly at an acceptable price.

Risk Lose Money [Text]

rr_RiskLoseMoney

There is no assurance that the Fund will achieve its investment objective and you could lose part or all of your investment in the Fund.

Risk Not Insured Depository Institution [Text]

rr_RiskNotInsuredDepositoryInstitution

An investment in the Fund is not a deposit of a bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.

Bar Chart and Performance Table [Heading]

rr_BarChartAndPerformanceTableHeading

Fund Performance

Performance Narrative [Text Block]

rr_PerformanceNarrativeTextBlock

The bar chart and table below provide an indication of risk by showing 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® High Current Yield Bond Funds Index, a composite of mutual funds comparable to the Fund. You may obtain updated performance information on the Fund’s website at www.americanbeaconfunds.com. Past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future.

Performance Information Illustrates Variability of Returns [Text]

rr_PerformanceInformationIllustratesVariabilityOfReturns

The bar chart and table below provide an indication of risk by showing how the Fund's performance has varied from year to year.

Performance Availability Website Address [Text]

rr_PerformanceAvailabilityWebSiteAddress

www.americanbeaconfunds.com

Performance Past Does Not Indicate Future [Text]

rr_PerformancePastDoesNotIndicateFuture

Past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future.

Bar Chart [Heading]

rr_BarChartHeading

Total Return for the Calendar Year Ended 12/31 of each Year

Bar Chart Closing [Text Block]

rr_BarChartClosingTextBlock

Highest Quarterly Return:	19.38%
(1/1/03 through 12/31/12)	(2nd Quarter 2009)
Lowest Quarterly Return:	-18.46%
(1/1/03 through 12/31/12)	(4th Quarter 2008)

Highest Quarterly Return, Label

rr_HighestQuarterlyReturnLabel

Highest Quarterly Return:

Highest Quarterly Return, Date

rr_BarChartHighestQuarterlyReturnDate

Jun. 30, 2009

Highest Quarterly Return

rr_BarChartHighestQuarterlyReturn

19.38%

Lowest Quarterly Return, Label

rr_LowestQuarterlyReturnLabel

Lowest Quarterly Return:

Lowest Quarterly Return, Date

rr_BarChartLowestQuarterlyReturnDate

Dec. 31, 2008

Lowest Quarterly Return

rr_BarChartLowestQuarterlyReturn

(18.46%)

Performance Table Heading

rr_PerformanceTableHeading

Average Annual Total Returns For the periods ended December 31, 2012

JP Morgan® Global High-Yield Index

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

16.21%

5 Years

rr_AverageAnnualReturnYear05

10.45%

10 Years

rr_AverageAnnualReturnYear10

10.70%

Lipper High Current Yield Bond Funds Index

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

15.40%

5 Years

rr_AverageAnnualReturnYear05

7.73%

10 Years

rr_AverageAnnualReturnYear10

8.89%

AMR Class

Risk/Return:

rr_RiskReturnAbstract

Redemption Fee (as a percentage of Amount Redeemed)

rr_RedemptionFeeOverRedemption

(2.00%)

Management fees

rr_ManagementFeesOverAssets

0.43%

Distribution and/or service (12b-1) fees

rr_DistributionAndService12b1FeesOverAssets

none

Other expenses

rr_OtherExpensesOverAssets

0.19%

Acquired Fund Fees and Expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.01%

Total annual fund operating expenses

rr_ExpensesOverAssets

0.63%

^[1]

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

64

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

201

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

350

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

786

Annual Return 2003

rr_AnnualReturn2003

18.49%

Annual Return 2004

rr_AnnualReturn2004

9.37%

Annual Return 2005

rr_AnnualReturn2005

2.30%

Annual Return 2006

rr_AnnualReturn2006

9.60%

Annual Return 2007

rr_AnnualReturn2007

2.93%

Annual Return 2008

rr_AnnualReturn2008

(27.45%)

Annual Return 2009

rr_AnnualReturn2009

48.24%

Annual Return 2010

rr_AnnualReturn2010

14.51%

Annual Return 2011

rr_AnnualReturn2011

3.20%

Annual Return 2012

rr_AnnualReturn2012

15.56%

1 Year

rr_AverageAnnualReturnYear01

15.56%

5 Years

rr_AverageAnnualReturnYear05

7.99%

10 Years

rr_AverageAnnualReturnYear10

8.19%

[1] The Total Annual Fund Operating Expenses do not correlate to the ratio of expenses to average net assets provided in the Fund's Financial Highlights table, which reflects the operating expenses of the Fund and does not include Acquired Fund Fees and Expenses.

XML

Label	Element	Value
Risk/Return:	rr_RiskReturnAbstract
Prospectus Date	rr_ProspectusDate	Feb. 28, 2013

XML

Label

Element

Value

Risk/Return:

rr_RiskReturnAbstract

Risk/Return [Heading]

rr_RiskReturnHeading

American Beacon Short-Term Bond Fund

Objective [Heading]

rr_ObjectiveHeading

Investment Objective

Objective, Primary [Text Block]

rr_ObjectivePrimaryTextBlock

The Fund’s investment objective is income and capital appreciation.

Expense [Heading]

rr_ExpenseHeading

Fees and Expenses of the Fund

Expense Narrative [Text Block]

rr_ExpenseNarrativeTextBlock

This table describes the fees and expenses that you may pay if you buy and hold shares of the Fund. You may qualify for sales discounts if you and your eligible family members invest, or agree to invest in the future, at least $50,000 in 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 101 of the Prospectus and “Additional Purchase and Sale Information for A Class Shares” on page 78 of the statement of additional information.

Shareholder Fees Caption [Text]

rr_ShareholderFeesCaption

Shareholder fees (fees paid directly from your investment)

Operating Expenses Caption [Text]

rr_OperatingExpensesCaption

Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)

Fee Waiver or Reimbursement over Assets, Date of Termination

rr_FeeWaiverOrReimbursementOverAssetsDateOfTermination

2014-02-28

Portfolio Turnover [Heading]

rr_PortfolioTurnoverHeading

Portfolio Turnover

Portfolio Turnover [Text Block]

rr_PortfolioTurnoverTextBlock

The Fund pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when fund shares are held in a taxable account. These costs, which are not reflected in annual fund operating expenses or in the example, affect the Fund’s performance. During the most recent fiscal year, the Fund’s portfolio turnover rate was 18% of the average value of its portfolio.

Portfolio Turnover, Rate

rr_PortfolioTurnoverRate

18.00%

Expense Breakpoint Discounts [Text]

rr_ExpenseBreakpointDiscounts

You may qualify for sales discounts if you and your eligible family members invest, or agree to invest in the future, at least $50,000 in the A Class shares of the American Beacon Funds.

Expense Breakpoint, Minimum Investment Required [Amount]

rr_ExpenseBreakpointMinimumInvestmentRequiredAmount

$ 50,000

Expenses Not Correlated to Ratio Due to Acquired Fund Fees [Text]

rr_ExpensesNotCorrelatedToRatioDueToAcquiredFundFees

The Total Annual Fund Operating Expenses do not correlate to the ratio of expenses to average net assets provided in the Fund's Financial Highlights table, which reflects the operating expenses of the Fund and does not include Acquired Fund Fees and Expenses.

Expense Example [Heading]

rr_ExpenseExampleHeading

Example

Expense Example Narrative [Text Block]

rr_ExpenseExampleNarrativeTextBlock

This Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return each year and that the Fund’s operating expenses remain the same. Although your actual costs may be higher or lower, based on these assumptions, your costs would be:

Shareholder fees

(fees paid directly from your investment)

Expense Example, No Redemption, By Year, Caption [Text]

rr_ExpenseExampleNoRedemptionByYearCaption

Assuming no redemption of shares:

Strategy [Heading]

rr_StrategyHeading

Principal Investment Strategies

Strategy Narrative [Text Block]

rr_StrategyNarrativeTextBlock

Under normal circumstances, the Fund invests at least 80% of its net assets (plus the amount of any borrowings for investment purposes) in obligations of the U.S. Government, its agencies and instrumentalities, including U.S. 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, master demand notes, loan participation interests, medium-term notes and funding agreements, mortgage-backed securities, asset-backed securities, Yankeedollar and Eurodollar bank certificates of deposit, time deposits, bankers’ acceptances and other notes. These types of obligations are commonly referred to as fixed-income securities or bonds and may include foreign bonds. The Fund seeks capital appreciation by investing in corporate issues whose relative value is expected to increase over time.

Currently, the Manager is the sole investment advisor to the Fund. In determining which securities to buy and sell, the Manager employs a top-down fixed-income investment strategy, as follows:

● Develop an overall investment strategy, including a portfolio duration target, by examining the current trends in the U.S. economy.

● 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.

● Determine the weightings of each security type by analyzing the difference in yield spreads between corporate and U.S. Government securities.

● Select specific debt securities within each security type.

● Review and monitor portfolio composition for changes in credit, risk-return profile and comparisons with benchmarks.

The Fund will only buy debt securities that are determined by the Manager to be investment grade at the time of purchase. If an investment held by the Fund is downgraded below investment grade, the Manager will take action that it believes to be advantageous to the Fund. Under normal circumstances, the Fund seeks to maintain a duration of one to three years. A duration of “one year” means that a security’s price would be expected to decrease by approximately 1% with a 1% increase in interest rates.

The Fund may also invest cash balances in other investment companies to gain market exposure on cash balances or reduce market exposure in anticipation of liquidity needs.

Risk [Heading]

rr_RiskHeading

Principal Risks

Risk Narrative [Text Block]

rr_RiskNarrativeTextBlock

There is no assurance that the Fund will achieve its investment objective and you could lose part or all of your investment in the Fund. The Fund is not 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:

Credit Risk

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’s credit rating can cause the price of its bonds to go down.

Foreign Investing Risk

Non-U.S. investments carry potential risks not associated with U.S. investments. Such risks include, but are not limited to: (1) currency exchange rate fluctuations, (2) political and financial instability, (3) less liquidity and greater volatility, (4) lack of uniform accounting, auditing and financial reporting standards, (5) increased price volatility, (6) less government regulation and supervision of foreign stock exchanges, brokers and listed companies, and (7) delays in transaction settlement in some foreign markets.

Government-Sponsored Enterprises Risk

Securities held by the Fund that are issued by government-sponsored enterprises, such as the Federal Home Loan Bank ("FHLB"), Federal National Mortgage Association (“Fannie Mae”), the Federal Home Loan Mortgage Corporation (“Freddie Mac”), 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.

Interest Rate Risk

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.

Investment Risk

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. Therefore, you may lose money by investing in the Fund.

Issuer Risk

The value of a security may decline for a number of reasons which directly relate to the issuer, such as management performance, financial leverage and reduced demand for the issuer’s goods or services, as well as the historical and prospective earnings of the issuer and the value of its assets.

Market Events Risk

Turbulence in financial markets and reduced liquidity in credit and fixed-income markets may negatively affect many issuers worldwide which could adversely affect the Fund.

Market Risk

Market risks, including political, regulatory, market and economic developments, and developments that impact specific economic sectors, industries or segments of the market, can affect the value of the Fund’s shares. The Fund’s fixed-income investments are subject to the risk that the lack of liquidity or other adverse credit market conditions may hamper the Fund’s ability to purchase and sell the securities.  From time to time, certain investments 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 such holdings to meet redemption requests or other cash needs, the Fund may have to sell them at a loss.

Other Investment Companies Risk

The Fund may invest in shares of other registered investment companies, including open-end funds, and money market funds. To the extent that the Fund invests in shares of other registered investment companies, you will indirectly bear fees and expenses charged by the underlying funds in addition to the Fund’s direct fees and expenses and will be subject to the risks associated with investments in those funds.

Prepayment and Extension Risk

The Fund’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’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’s effective maturity and a decline in its price.

Securities Selection Risk

Securities selected for the Fund may not perform to expectations. This could result in the Fund’s underperformance compared to other funds with similar investment objectives.

U.S. Government Securities Risk

A security backed by the U.S. Treasury or the full faith and credit of the United States is guaranteed only as to the timely payment of interest and principal when held to maturity. The market prices for such securities are not guaranteed and will fluctuate. They are also subject to credit risk and interest rate.

Risk Lose Money [Text]

rr_RiskLoseMoney

There is no assurance that the Fund will achieve its investment objective and you could lose part or all of your investment in the Fund.

Risk Not Insured Depository Institution [Text]

rr_RiskNotInsuredDepositoryInstitution

An investment in the Fund is not a deposit of a bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.

Bar Chart and Performance Table [Heading]

rr_BarChartAndPerformanceTableHeading

Fund Performance

Performance Narrative [Text Block]

rr_PerformanceNarrativeTextBlock

The bar chart and table below provide an indication of risk by showing 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 Short Investment Grade Bond Funds Index, a composite of mutual funds comparable to the Fund. Performance shown in the chart and tables below reflects the Fund’s one-time receipt in December 2006 of class action settlement proceeds that were related to investment activity in 2002. The Fund’s performance for all periods that include December 2006 was significantly higher than it would have been absent receipt of the settlement proceeds.

The chart and the table below show the performance of the Fund’s Institutional Class shares for all periods. The Fund began operations of Investor Class shares on August 1, 1994, 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 Institutional Class is shown for Y Class shares and the performance of the Investor Class is shown for the A Class and C Class shares prior to the dates such new share classes were first offered. In each case, the newer share classes would have had similar annual returns to the older share classes because the shares are invested in the same portfolio securities. However, because the older share classes had lower expenses, their performance was better than the newer share 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.

Sales charges are not reflected in the bar chart and table below. If those charges were included, returns for A Class shares would be less than those shown.

Performance Information Illustrates Variability of Returns [Text]

rr_PerformanceInformationIllustratesVariabilityOfReturns

The bar chart and table below provide an indication of risk by showing how the Fund's performance has varied from year to year.

Performance Availability Website Address [Text]

rr_PerformanceAvailabilityWebSiteAddress

www.americanbeaconfunds.com

Performance Past Does Not Indicate Future [Text]

rr_PerformancePastDoesNotIndicateFuture

Past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future.

Bar Chart [Heading]

rr_BarChartHeading

Calendar year total returns for Institutional Class shares

Bar Chart Narrative [Text Block]

rr_BarChartNarrativeTextBlock

Total Return for the Calendar Year Ended 12/31 of each year

Bar Chart Does Not Reflect Sales Loads [Text]

rr_BarChartDoesNotReflectSalesLoads

Sales charges are not reflected in the bar chart and table below. If those charges were included, returns for A Class shares would be less than those shown.

Bar Chart Closing [Text Block]

rr_BarChartClosingTextBlock

Highest Quarterly Return:	2.23%
(1/1/03 through 12/31/12)	(4th Quarter 2008)
Lowest Quarterly Return:	-1.18%
(1/1/03) through 12/31/12)	(3rd Quarter 2008)

Highest Quarterly Return, Label

rr_HighestQuarterlyReturnLabel

Highest Quarterly Return:

Highest Quarterly Return, Date

rr_BarChartHighestQuarterlyReturnDate

Dec. 31, 2008

Highest Quarterly Return

rr_BarChartHighestQuarterlyReturn

2.23%

Lowest Quarterly Return, Label

rr_LowestQuarterlyReturnLabel

Lowest Quarterly Return:

Lowest Quarterly Return, Date

rr_BarChartLowestQuarterlyReturnDate

Sep. 30, 2008

Lowest Quarterly Return

rr_BarChartLowestQuarterlyReturn

(1.18%)

Performance Table Heading

rr_PerformanceTableHeading

Average Annual Total Returns For the periods ended December 31, 2012

Performance Table Uses Highest Federal Rate

rr_PerformanceTableUsesHighestFederalRate

After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes.

Performance Table Not Relevant to Tax Deferred

rr_PerformanceTableNotRelevantToTaxDeferred

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.

Performance Table One Class of after Tax Shown [Text]

rr_PerformanceTableOneClassOfAfterTaxShown

After-tax returns are shown only for Institutional Class shares; after-tax returns for other share classes will vary.

BofA Merrill Lynch 1-3 Yr. Gov./Corp. Index

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

1.48%

^[1]

5 Years

rr_AverageAnnualReturnYear05

2.87%

^[1]

10 Years

rr_AverageAnnualReturnYear10

3.11%

^[1]

Lipper Short Investment Grade Bond Funds Index

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

3.94%

^[1]

5 Years

rr_AverageAnnualReturnYear05

3.02%

^[1]

10 Years

rr_AverageAnnualReturnYear10

3.02%

^[1]

Institutional Class

Risk/Return:

rr_RiskReturnAbstract

Maximum sales charge imposed on purchases (as a percentage of offering price)

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

none

Maximum deferred sales charge load (as a percentage of the lower of original offering price or redemption proceeds)

rr_MaximumDeferredSalesChargeOverOther

none

Management fees

rr_ManagementFeesOverAssets

0.20%

Distribution and/or service (12b-1) fees

rr_DistributionAndService12b1FeesOverAssets

none

Other expenses

rr_OtherExpensesOverAssets

0.17%

Acquired Fund Fees and Expenses

rr_AcquiredFundFeesAndExpensesOverAssets

none

Total annual fund operating expenses

rr_ExpensesOverAssets

0.37%

^[2]

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

38

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

119

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

207

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

467

Annual Return 2003

rr_AnnualReturn2003

4.11%

Annual Return 2004

rr_AnnualReturn2004

4.02%

Annual Return 2005

rr_AnnualReturn2005

2.43%

Annual Return 2006

rr_AnnualReturn2006

4.55%

Annual Return 2007

rr_AnnualReturn2007

7.19%

Annual Return 2008

rr_AnnualReturn2008

5.13%

Annual Return 2009

rr_AnnualReturn2009

7.33%

Annual Return 2010

rr_AnnualReturn2010

6.20%

Annual Return 2011

rr_AnnualReturn2011

6.54%

Annual Return 2012

rr_AnnualReturn2012

3.20%

1 Year

rr_AverageAnnualReturnYear01

3.20%

^[1]

5 Years

rr_AverageAnnualReturnYear05

2.89%

^[1]

10 Years

rr_AverageAnnualReturnYear10

3.16%

^[1]

Inception Date

rr_AverageAnnualReturnInceptionDate

Dec. 03, 1987

^[1]

Institutional Class | After Taxes on Distributions

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

2.57%

^[1]

5 Years

rr_AverageAnnualReturnYear05

1.85%

^[1]

10 Years

rr_AverageAnnualReturnYear10

1.77%

^[1]

Institutional Class | After Taxes on Distributions and Sales

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

2.08%

^[1]

5 Years

rr_AverageAnnualReturnYear05

1.86%

^[1]

10 Years

rr_AverageAnnualReturnYear10

1.87%

^[1]

Investor Class

Risk/Return:

rr_RiskReturnAbstract

Maximum sales charge imposed on purchases (as a percentage of offering price)

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

none

Maximum deferred sales charge load (as a percentage of the lower of original offering price or redemption proceeds)

rr_MaximumDeferredSalesChargeOverOther

none

Management fees

rr_ManagementFeesOverAssets

0.20%

Distribution and/or service (12b-1) fees

rr_DistributionAndService12b1FeesOverAssets

none

Other expenses

rr_OtherExpensesOverAssets

0.69%

Acquired Fund Fees and Expenses

rr_AcquiredFundFeesAndExpensesOverAssets

none

Total annual fund operating expenses

rr_ExpensesOverAssets

0.89%

^[2]

Fee Waiver or Reimbursement

rr_FeeWaiverOrReimbursementOverAssets

(0.10%)

Total annual fund operating expenses after expense reduction and reimbursement

rr_NetExpensesOverAssets

0.79%

^[3]

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

81

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

275

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

485

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

1,089

1 Year

rr_AverageAnnualReturnYear01

2.93%

^[1]

5 Years

rr_AverageAnnualReturnYear05

2.54%

^[1]

10 Years

rr_AverageAnnualReturnYear10

2.70%

^[1]

Inception Date

rr_AverageAnnualReturnInceptionDate

Aug. 01, 1994

^[1]

Y Class

Risk/Return:

rr_RiskReturnAbstract

Maximum sales charge imposed on purchases (as a percentage of offering price)

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

none

Maximum deferred sales charge load (as a percentage of the lower of original offering price or redemption proceeds)

rr_MaximumDeferredSalesChargeOverOther

none

Management fees

rr_ManagementFeesOverAssets

0.20%

Distribution and/or service (12b-1) fees

rr_DistributionAndService12b1FeesOverAssets

none

Other expenses

rr_OtherExpensesOverAssets

0.52%

Acquired Fund Fees and Expenses

rr_AcquiredFundFeesAndExpensesOverAssets

none

Total annual fund operating expenses

rr_ExpensesOverAssets

0.72%

^[2]

Fee Waiver or Reimbursement

rr_FeeWaiverOrReimbursementOverAssets

(0.08%)

Total annual fund operating expenses after expense reduction and reimbursement

rr_NetExpensesOverAssets

0.64%

^[3]

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

65

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

222

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

392

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

887

1 Year

rr_AverageAnnualReturnYear01

3.38%

^[1]

5 Years

rr_AverageAnnualReturnYear05

2.89%

^[1]

10 Years

rr_AverageAnnualReturnYear10

3.15%

^[1]

Inception Date

rr_AverageAnnualReturnInceptionDate

Mar. 01, 2010

^[1]

A Class

Risk/Return:

rr_RiskReturnAbstract

Maximum sales charge imposed on purchases (as a percentage of offering price)

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

2.50%

Maximum deferred sales charge load (as a percentage of the lower of original offering price or redemption proceeds)

rr_MaximumDeferredSalesChargeOverOther

0.50%

^[4]

Management fees

rr_ManagementFeesOverAssets

0.20%

Distribution and/or service (12b-1) fees

rr_DistributionAndService12b1FeesOverAssets

0.25%

Other expenses

rr_OtherExpensesOverAssets

0.67%

Acquired Fund Fees and Expenses

rr_AcquiredFundFeesAndExpensesOverAssets

none

Total annual fund operating expenses

rr_ExpensesOverAssets

1.12%

^[2]

Fee Waiver or Reimbursement

rr_FeeWaiverOrReimbursementOverAssets

(0.27%)

Total annual fund operating expenses after expense reduction and reimbursement

rr_NetExpensesOverAssets

0.85%

^[3]

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

335

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

571

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

826

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

1,555

1 Year

rr_AverageAnnualReturnYear01

2.71%

^[1]

5 Years

rr_AverageAnnualReturnYear05

2.46%

^[1]

10 Years

rr_AverageAnnualReturnYear10

2.65%

^[1]

Inception Date

rr_AverageAnnualReturnInceptionDate

May 17, 2010

^[1]

C Class

Risk/Return:

rr_RiskReturnAbstract

Maximum sales charge imposed on purchases (as a percentage of offering price)

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

none

Maximum deferred sales charge load (as a percentage of the lower of original offering price or redemption proceeds)

rr_MaximumDeferredSalesChargeOverOther

1.00%

Management fees

rr_ManagementFeesOverAssets

0.20%

Distribution and/or service (12b-1) fees

rr_DistributionAndService12b1FeesOverAssets

1.00%

Other expenses

rr_OtherExpensesOverAssets

0.70%

Acquired Fund Fees and Expenses

rr_AcquiredFundFeesAndExpensesOverAssets

none

Total annual fund operating expenses

rr_ExpensesOverAssets

1.90%

^[2]

Fee Waiver or Reimbursement

rr_FeeWaiverOrReimbursementOverAssets

(0.30%)

Total annual fund operating expenses after expense reduction and reimbursement

rr_NetExpensesOverAssets

1.60%

^[3]

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

263

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

569

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

1,000

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

2,199

Expense Example, No Redemption, 1 Year

rr_ExpenseExampleNoRedemptionYear01

163

Expense Example, No Redemption, 3 Years

rr_ExpenseExampleNoRedemptionYear03

569

Expense Example, No Redemption, 5 Years

rr_ExpenseExampleNoRedemptionYear05

1,000

Expense Example, No Redemption, 10 Years

rr_ExpenseExampleNoRedemptionYear10

$ 2,199

1 Year

rr_AverageAnnualReturnYear01

2.06%

^[1]

5 Years

rr_AverageAnnualReturnYear05

2.13%

^[1]

10 Years

rr_AverageAnnualReturnYear10

2.49%

^[1]

Inception Date

rr_AverageAnnualReturnInceptionDate

Sep. 01, 2010

^[1]

[1] 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.

[2] The Total Annual Fund Operating Expenses do not correlate to the ratio of expenses to average net assets provided in the Fund's Financial Highlights table, which reflects the operating expenses of the Fund and does not include Acquired Fund Fees and Expenses.

[3] The Manager has contractually agreed to reduce and/or reimburse the A Class, C Class, Y Class and Investor Class of the Fund for Other Expenses, as applicable, through February 28, 2014 to the extent that Total Annual Fund Operating Expenses exceed 0.85% for the A Class, 1.60% for the C Class, 0.64% for the Y Class and 0.79% for the Investor 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.

[4] A contingent deferred sales charge ("CDSC") of 0.50% will be charged on certain purchases of $250,000 or more that are redeemed in whole or part within 12 months of purchase.

XML

Label

Element

Value

Risk/Return:

rr_RiskReturnAbstract

Risk/Return [Heading]

rr_RiskReturnHeading

American Beacon Retirement Income and Appreciation Fund

Objective [Heading]

rr_ObjectiveHeading

Investment Objective

Objective, Primary [Text Block]

rr_ObjectivePrimaryTextBlock

The Fund’s investment objective is income and capital appreciation.

Expense [Heading]

rr_ExpenseHeading

Fees and Expenses of the Fund

Expense Narrative [Text Block]

rr_ExpenseNarrativeTextBlock

This table describes the fees and expenses that you may pay if you buy and hold shares of the Fund. You may qualify for sales discounts if you and your eligible family members invest, or agree to invest in the future, at least $50,000 in the A Class shares of the American Beacon Funds. More information about these and other discounts are available from your financial professional and in “Choosing Your Share Class” on page 101 of the Prospectus and “Additional Purchase and Sale Information for A Class Shares” on page 78 of the statement of additional information.

Shareholder Fees Caption [Text]

rr_ShareholderFeesCaption

Shareholder Fees (fees paid directly from your investment)

Operating Expenses Caption [Text]

rr_OperatingExpensesCaption

Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)

Fee Waiver or Reimbursement over Assets, Date of Termination

rr_FeeWaiverOrReimbursementOverAssetsDateOfTermination

2014-02-28

Portfolio Turnover [Heading]

rr_PortfolioTurnoverHeading

Portfolio Turnover

Portfolio Turnover [Text Block]

rr_PortfolioTurnoverTextBlock

The Fund pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when fund shares are held in a taxable account. These costs, which are not reflected in annual fund operating expenses or in the example, affect the Fund’s performance. During the most recent fiscal year, the Fund’s portfolio turnover rate was 42% of the average value of its portfolio.

Portfolio Turnover, Rate

rr_PortfolioTurnoverRate

42.00%

Expense Breakpoint Discounts [Text]

rr_ExpenseBreakpointDiscounts

You may qualify for sales discounts if you and your eligible family members invest, or agree to invest in the future, at least $50,000 in the A Class shares of the American Beacon Funds.

Expense Breakpoint, Minimum Investment Required [Amount]

rr_ExpenseBreakpointMinimumInvestmentRequiredAmount

$ 50,000

Expenses Not Correlated to Ratio Due to Acquired Fund Fees [Text]

rr_ExpensesNotCorrelatedToRatioDueToAcquiredFundFees

The Total Annual Fund Operating Expenses do not correlate to the ratio of expenses to average net assets provided in the Fund's Financial Highlights table, which reflects the operating expenses of the Fund and does not include Acquired Fund Fees and Expenses.

Expense Example [Heading]

rr_ExpenseExampleHeading

Example

Expense Example Narrative [Text Block]

rr_ExpenseExampleNarrativeTextBlock

This Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return each year and that the Fund’s operating expenses remain the same. Although your actual costs may be higher or lower, based on these assumptions, your costs would be:

Expense Example, No Redemption, By Year, Caption [Text]

rr_ExpenseExampleNoRedemptionByYearCaption

Assuming no redemption of shares:

Strategy [Heading]

rr_StrategyHeading

Principal Investment Strategies

Strategy Narrative [Text Block]

rr_StrategyNarrativeTextBlock

Under normal circumstances, approximately 75% of the Fund’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,  master demand notes,  medium-term notes, funding agreements, mortgage-backed securities, asset-backed securities  and other debt securities (collectively referred to as “investment grade fixed-income securities”). If an investment held by the Fund is downgraded below investment grade, the Manager or sub-advisor 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’s remaining total assets are invested in convertible and non-convertible debt obligations without regard to credit quality, as well as equity securities. 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.

The Manager currently allocates the Fund’s assets between itself and a sub-advisor. The Manager makes investment decisions regarding a portion of the Fund’s fixed-income securities. In determining which securities to buy and sell, the Manager employs a top-down fixed-income investment strategy, as follows:

● Develop an overall investment strategy, including a portfolio duration target, by examining the current trends in the U.S. economy.

● 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.

● Determine the weightings of each security type by analyzing the difference in yield spreads between corporate and U.S. Government securities.

● Select specific debt securities within each security type.

● Review and monitor portfolio composition for changes in credit, risk-return profile and comparisons with benchmarks.

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 “one year” means that a security’s price would be expected to decrease by approximately 1% with a 1% increase in interest rates.

The sub-advisor invests in convertible securities but may invest up to 60% of its portion of the Fund’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 “high-yield bonds” or “junk bonds.” The average term to maturity of the fixed-income securities held in the portion of the Fund’s portfolio managed by the sub-advisor will typically range from three to ten years.

The sub-advisor also may invest up to 40% of its portion of the Fund’s total asset in non-convertible equity securities, common stocks, preferred stocks, American Depositary Receipts (“ADRs”) and U.S. dollar-denominated foreign stocks traded on U.S. exchanges (collectively referred to as “stocks”). Historically, the sub-advisor’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.

In selecting securities, the sub-advisor may take into consideration such quantitative factors as an issuer’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 any rating organizations as preliminary indicators of investment quality, in addition to its own credit research and analysis.

The Fund may also invest cash balances in other investment companies to gain market exposure on cash balances or reduce market exposure in anticipation of liquidity needs.

Risk [Heading]

rr_RiskHeading

Principal Risks

Risk Narrative [Text Block]

rr_RiskNarrativeTextBlock

There is no assurance that the Fund will achieve its investment objective and you could lose part or all of your investment in the Fund. The Fund is not designed for investors who need an assured level of income and is intended to be a long-term investment. The Fund is not a complete investment program and may not be appropriate for all investors. Investors should carefully consider their own investment goals and risk tolerance before investing in the Fund. The principal risks of investing in the Fund are:

Convertible Securities Risk

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.

Credit Risk

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’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.

Equity Investments Risk

Equity securities generally are subject to market risk. The Fund’s investments in equity securities may include common stocks, preferred stocks, ADRs, and U.S. dollar-denominated foreign stocks traded on U.S. exchanges. Such investments may expose the Fund to additional risks.

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 ADRs and U.S. dollar-denominated foreign stocks traded on U.S. exchanges are subject to certain of the risks associated with investing directly in foreign securities.

Foreign Exposure Risk

The Fund may invest in securities issued by foreign companies through ADRs 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. Non-U.S. investments carry potential risks not associated with U.S. investments. Such risks include, but are not limited to: (1) currency exchange rate fluctuations, (2) political and financial instability, (3) less liquidity and greater volatility, (4) lack of uniform accounting, auditing and financial reporting standards, (5) increased price volatility, and (6) less government regulation and supervision of foreign stock exchanges, brokers and listed companies.

Government-Sponsored Enterprises Risk

Securities held by the Fund that are issued by government-sponsored enterprises, such as the Federal National Mortgage Association (“Fannie Mae”), the Federal Home Loan Mortgage Corporation (“Freddie Mac”), 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.

Interest Rate Risk

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.

Investment Risk

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. Therefore, you may lose money by investing in the Fund.

Issuer Risk

The value of a security may decline for a number of reasons which directly relate to the issuer, such as management performance, financial leverage and reduced demand for the issuer’s goods or services, as well as the historical and prospective earnings of the issuer and the value of its assets.

Market Events Risk

Turbulence in financial markets and reduced liquidity in equity, credit and fixed-income markets may negatively affect many issuers worldwide which could adversely affect the Fund.

Market Risk

Market risks, including political, regulatory, market and economic developments, and developments that impact specific economic sectors, industries or segments of the market, can affect the value of the Fund’s shares. The Fund’s equity investments are subject to stock market risk, which involves the possibility that the value of the Fund’s investments in stocks will decline due to drops in the stock market. The Fund’s fixed-income investments are subject to the risk that the lack of liquidity or other adverse credit market conditions may hamper the Fund’s ability to purchase and sell the securities. From time to time, certain investments 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 holdings to meet redemption requests or other cash needs, the Fund may have to sell them at a loss.

Other Investment Companies Risk

The Fund may invest in shares of other registered investment companies, including open-end funds, exchange-traded funds (“ETFs”) and money market funds. To the extent that the Fund invests in shares of other registered investment companies, you will indirectly bear fees and expenses charged by the underlying funds in addition to the Fund’s direct fees and expenses and will be subject to the risks associated with investments in those funds.

Prepayment and Extension Risk

The Fund’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’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’s effective maturity and a decline in its price.

Securities Selection Risk

Securities selected by the Manager or 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.

U.S. Government Securities Risk

A security backed by the U.S. Treasury or the full faith and credit of the United States is guaranteed only as to the timely payment of interest and principal when held to maturity. The market prices for such securities are not guaranteed and will fluctuate. They are also subject to credit risk and interest rate risk.

Risk Lose Money [Text]

rr_RiskLoseMoney

There is no assurance that the Fund will achieve its investment objective and you could lose part or all of your investment in the Fund.

Risk Not Insured Depository Institution [Text]

rr_RiskNotInsuredDepositoryInstitution

An investment in the Fund is not a deposit of a bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.

Bar Chart and Performance Table [Heading]

rr_BarChartAndPerformanceTableHeading

Fund Performance

Performance Narrative [Text Block]

rr_PerformanceNarrativeTextBlock

The bar chart and table below provide an indication of risk by showing how the Fund’s performance has varied from year to year. The table shows how the Fund’s performance compares to the Barclays Capital U.S. Aggregate Bond Index, which is the Fund’s primary benchmark. The table also shows how the Fund’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’s allocation of its assets between fixed-income securities and convertible securities. The Lipper Intermediate Investment Grade Debt Funds Index shows how the Fund’s performance compares to a composite of mutual funds with similar investment objectives.

The chart and the table below show the performance of the Fund’s Investor Class shares for all periods. The Fund began operations of 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’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.

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.

Performance Information Illustrates Variability of Returns [Text]

rr_PerformanceInformationIllustratesVariabilityOfReturns

The bar chart and table below provide an indication of risk by showing how the Fund's performance has varied from year to year.

Performance Availability Website Address [Text]

rr_PerformanceAvailabilityWebSiteAddress

www.americanbeaconfunds.com

Performance Past Does Not Indicate Future [Text]

rr_PerformancePastDoesNotIndicateFuture

Past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future.

Bar Chart [Heading]

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Calendar year total returns for Investor Class shares

Bar Chart Narrative [Text Block]

rr_BarChartNarrativeTextBlock

Total Return for the Calendar Year Ended 12/31 of each Year

Bar Chart Does Not Reflect Sales Loads [Text]

rr_BarChartDoesNotReflectSalesLoads

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.

Bar Chart Closing [Text Block]

rr_BarChartClosingTextBlock

Highest Quarterly Return:	6.61%
(1/1/04 through 12/31/12)	(3rd Quarter 2009)
Lowest Quarterly Return:	-4.19%
(1/1/04 through 12/31/12)	(3rd Quarter 2008)

Highest Quarterly Return, Label

rr_HighestQuarterlyReturnLabel

Highest Quarterly Return:

Highest Quarterly Return, Date

rr_BarChartHighestQuarterlyReturnDate

Sep. 30, 2009

Highest Quarterly Return

rr_BarChartHighestQuarterlyReturn

6.61%

Lowest Quarterly Return, Label

rr_LowestQuarterlyReturnLabel

Lowest Quarterly Return:

Lowest Quarterly Return, Date

rr_BarChartLowestQuarterlyReturnDate

Sep. 30, 2008

Lowest Quarterly Return

rr_BarChartLowestQuarterlyReturn

(4.19%)

Performance Table Heading

rr_PerformanceTableHeading

Average Annual Total Returns For the periods ended December 31, 2012

Performance Table Uses Highest Federal Rate

rr_PerformanceTableUsesHighestFederalRate

After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes.

Performance Table Not Relevant to Tax Deferred

rr_PerformanceTableNotRelevantToTaxDeferred

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.

Performance Table One Class of after Tax Shown [Text]

rr_PerformanceTableOneClassOfAfterTaxShown

After-tax returns are shown only for Investor Class shares; after-tax returns for other share classes will vary.

Barclays Capital U.S. Aggregate Bond Index

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

4.21%

^[1]

5 Years

rr_AverageAnnualReturnYear05

5.96%

^[1]

10 Years

rr_AverageAnnualReturnYear10

5.03%

^[1]

Linked Barclays Capital U.S. Aggregate Bond Index

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

4.21%

^[1]

5 Years

rr_AverageAnnualReturnYear05

6.19%

^[1]

10 Years

rr_AverageAnnualReturnYear10

5.95%

^[1]

BofA Merrill Lynch All U.S. Convertibles Index

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

14.96%

^[1]

5 Years

rr_AverageAnnualReturnYear05

4.06%

^[1]

10 Years

rr_AverageAnnualReturnYear10

6.23%

^[1]

Retirement Income and Appreciation Composite Index

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

6.89%

^[1]

5 Years

rr_AverageAnnualReturnYear05

5.73%

^[1]

10 Years

rr_AverageAnnualReturnYear10

5.30%

^[1]

Lipper Intermediate Investment Grade Debt Funds Index

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

7.82%

^[1]

5 Years

rr_AverageAnnualReturnYear05

6.28%

^[1]

10 Years

rr_AverageAnnualReturnYear10

5.08%

^[1]

Investor Class

Risk/Return:

rr_RiskReturnAbstract

Maximum sales charge imposed on purchases (as a percentage of offering price)

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

none

Maximum deferred sales charge load (as a percentage of the lower of original offering price or redemption proceeds)

rr_MaximumDeferredSalesChargeOverOther

none

Management fees

rr_ManagementFeesOverAssets

0.32%

Distribution and/or service (12b-1) fees

rr_DistributionAndService12b1FeesOverAssets

none

Other expenses

rr_OtherExpensesOverAssets

0.80%

Acquired Fund Fees and Expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.01%

Total annual fund operating expenses

rr_ExpensesOverAssets

1.13%

^[2]

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

115

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

359

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

622

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

1,374

Annual Return 2003

rr_AnnualReturn2003

3.04%

Annual Return 2004

rr_AnnualReturn2004

1.51%

Annual Return 2005

rr_AnnualReturn2005

1.86%

Annual Return 2006

rr_AnnualReturn2006

5.09%

Annual Return 2007

rr_AnnualReturn2007

5.30%

Annual Return 2008

rr_AnnualReturn2008

3.03%

Annual Return 2009

rr_AnnualReturn2009

5.04%

Annual Return 2010

rr_AnnualReturn2010

2.89%

Annual Return 2011

rr_AnnualReturn2011

0.36%

Annual Return 2012

rr_AnnualReturn2012

7.19%

1 Year

rr_AverageAnnualReturnYear01

7.19%

^[1]

5 Years

rr_AverageAnnualReturnYear05

5.22%

^[1]

10 Years

rr_AverageAnnualReturnYear10

4.86%

^[1]

Inception Date

rr_AverageAnnualReturnInceptionDate

Jun. 30, 2003

^[1]

Investor Class | After Taxes on Distributions

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

6.07%

^[1]

5 Years

rr_AverageAnnualReturnYear05

4.10%

^[1]

10 Years

rr_AverageAnnualReturnYear10

3.63%

^[1]

Investor Class | After Taxes on Distributions and Sales

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

4.78%

^[1]

5 Years

rr_AverageAnnualReturnYear05

3.85%

^[1]

10 Years

rr_AverageAnnualReturnYear10

3.48%

^[1]

Y Class

Risk/Return:

rr_RiskReturnAbstract

Maximum sales charge imposed on purchases (as a percentage of offering price)

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

none

Maximum deferred sales charge load (as a percentage of the lower of original offering price or redemption proceeds)

rr_MaximumDeferredSalesChargeOverOther

none

Management fees

rr_ManagementFeesOverAssets

0.32%

Distribution and/or service (12b-1) fees

rr_DistributionAndService12b1FeesOverAssets

none

Other expenses

rr_OtherExpensesOverAssets

0.55%

Acquired Fund Fees and Expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.01%

Total annual fund operating expenses

rr_ExpensesOverAssets

0.88%

^[2]

Fee Waiver or Reimbursement

rr_FeeWaiverOrReimbursementOverAssets

(0.07%)

Total annual fund operating expenses after expense reduction and reimbursement

rr_NetExpensesOverAssets

0.81%

^[3]

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

83

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

274

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

481

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

1,078

1 Year

rr_AverageAnnualReturnYear01

7.41%

^[1]

5 Years

rr_AverageAnnualReturnYear05

5.34%

^[1]

10 Years

rr_AverageAnnualReturnYear10

4.93%

^[1]

Inception Date

rr_AverageAnnualReturnInceptionDate

Mar. 01, 2010

^[1]

A Class

Risk/Return:

rr_RiskReturnAbstract

Maximum sales charge imposed on purchases (as a percentage of offering price)

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

2.50%

Maximum deferred sales charge load (as a percentage of the lower of original offering price or redemption proceeds)

rr_MaximumDeferredSalesChargeOverOther

0.50%

^[4]

Management fees

rr_ManagementFeesOverAssets

0.32%

Distribution and/or service (12b-1) fees

rr_DistributionAndService12b1FeesOverAssets

0.25%

Other expenses

rr_OtherExpensesOverAssets

0.71%

Acquired Fund Fees and Expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.01%

Total annual fund operating expenses

rr_ExpensesOverAssets

1.29%

^[2]

Fee Waiver or Reimbursement

rr_FeeWaiverOrReimbursementOverAssets

(0.14%)

Total annual fund operating expenses after expense reduction and reimbursement

rr_NetExpensesOverAssets

1.15%

^[3]

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

364

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

635

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

926

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

1,756

1 Year

rr_AverageAnnualReturnYear01

7.10%

^[1]

5 Years

rr_AverageAnnualReturnYear05

5.20%

^[1]

10 Years

rr_AverageAnnualReturnYear10

4.85%

^[1]

Inception Date

rr_AverageAnnualReturnInceptionDate

May 17, 2010

^[1]

C Class

Risk/Return:

rr_RiskReturnAbstract

Maximum sales charge imposed on purchases (as a percentage of offering price)

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

none

Maximum deferred sales charge load (as a percentage of the lower of original offering price or redemption proceeds)

rr_MaximumDeferredSalesChargeOverOther

1.00%

Management fees

rr_ManagementFeesOverAssets

0.32%

Distribution and/or service (12b-1) fees

rr_DistributionAndService12b1FeesOverAssets

1.00%

Other expenses

rr_OtherExpensesOverAssets

0.72%

Acquired Fund Fees and Expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.01%

Total annual fund operating expenses

rr_ExpensesOverAssets

2.05%

^[2]

Fee Waiver or Reimbursement

rr_FeeWaiverOrReimbursementOverAssets

(0.08%)

Total annual fund operating expenses after expense reduction and reimbursement

rr_NetExpensesOverAssets

1.97%

^[3]

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

300

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

635

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

1,096

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

2,373

Expense Example, No Redemption, 1 Year

rr_ExpenseExampleNoRedemptionYear01

200

Expense Example, No Redemption, 3 Years

rr_ExpenseExampleNoRedemptionYear03

635

Expense Example, No Redemption, 5 Years

rr_ExpenseExampleNoRedemptionYear05

1,096

Expense Example, No Redemption, 10 Years

rr_ExpenseExampleNoRedemptionYear10

$ 2,373

1 Year

rr_AverageAnnualReturnYear01

6.08%

^[1]

5 Years

rr_AverageAnnualReturnYear05

4.76%

^[1]

10 Years

rr_AverageAnnualReturnYear10

4.62%

^[1]

Inception Date

rr_AverageAnnualReturnInceptionDate

Sep. 01, 2010

^[1]

[1] After-tax returns are shown only for Investor 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.

[2] The Total Annual Fund Operating Expenses do not correlate to the ratio of expenses to average net assets provided in the Fund's Financial Highlights table, which reflects the operating expenses of the Fund and does not include Acquired Fund Fees and Expenses.

[3] The Manager has contractually agreed to reduce and/or reimburse the A Class, C Class and Y Class of the Fund for Other Expenses, as applicable, through February 28, 2014 to the extent that Total Annual Fund Operating Expenses exceed 1.14% for the A Class, 1.96% for the C Class and 0.80% for the Y 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.

[4] A contingent deferred sales charge ("CDSC") of 0.50% will be charged on certain purchases of $250,000 or more that are redeemed in whole or part within 12 months of purchase.

XML

Label

Element

Value

Risk/Return:

rr_RiskReturnAbstract

Risk/Return [Heading]

rr_RiskReturnHeading

American Beacon Mid-Cap Value Fund

Objective [Heading]

rr_ObjectiveHeading

Investment Objective

Objective, Primary [Text Block]

rr_ObjectivePrimaryTextBlock

The Fund’s investment objective is long-term capital appreciation and current income.

Expense [Heading]

rr_ExpenseHeading

Fees and Expenses of the Fund

Expense Narrative [Text Block]

rr_ExpenseNarrativeTextBlock

This table describes the fees and expenses that you may pay if you buy and hold shares of the Fund. 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 101 of the Prospectus and “Additional Purchase and Sale Information for A Class Shares” on page 78 of the statement of additional information.

Shareholder Fees Caption [Text]

rr_ShareholderFeesCaption

Shareholder Fees (fees paid directly from your investment)

Operating Expenses Caption [Text]

rr_OperatingExpensesCaption

Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)

Fee Waiver or Reimbursement over Assets, Date of Termination

rr_FeeWaiverOrReimbursementOverAssetsDateOfTermination

2014-02-28

Portfolio Turnover [Heading]

rr_PortfolioTurnoverHeading

Portfolio Turnover

Portfolio Turnover [Text Block]

rr_PortfolioTurnoverTextBlock

The Fund pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when fund shares are held in a taxable account. These costs, which are not reflected in annual fund operating expenses or in the example, affect the Fund’s performance. During the most recent fiscal year, the Fund’s portfolio turnover rate was 87% of the average value of its portfolio.

Portfolio Turnover, Rate

rr_PortfolioTurnoverRate

87.00%

Expense Breakpoint Discounts [Text]

rr_ExpenseBreakpointDiscounts

You may qualify for sales discounts if you and your eligible family members invest, or agree to invest in the future, at least $50,000 in the A Class shares of the American Beacon Funds.

Expense Breakpoint, Minimum Investment Required [Amount]

rr_ExpenseBreakpointMinimumInvestmentRequiredAmount

$ 50,000

Expenses Not Correlated to Ratio Due to Acquired Fund Fees [Text]

rr_ExpensesNotCorrelatedToRatioDueToAcquiredFundFees

The Total Annual Fund Operating Expenses do not correlate to the ratio of expenses to average net assets provided in the Fund's Financial Highlights table, which reflects the operating expenses of the Fund and does not include Acquired Fund Fees and Expenses.

Expense Example [Heading]

rr_ExpenseExampleHeading

Example

Expense Example Narrative [Text Block]

rr_ExpenseExampleNarrativeTextBlock

This Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return each year and that the Fund’s operating expenses remain the same. Although your actual costs may be higher or lower, based on these assumptions, your costs would be:

Expense Example, No Redemption, By Year, Caption [Text]

rr_ExpenseExampleNoRedemptionByYearCaption

Assuming no redemption of shares:

Strategy [Heading]

rr_StrategyHeading

Principal Investment Strategies

Strategy Narrative [Text Block]

rr_StrategyNarrativeTextBlock

Under normal circumstances, at least 80% of the Fund’s net assets (plus the amount of any borrowings for investment purposes) are invested in equity securities of middle market capitalization U.S. companies. These companies have market capitalizations within the market capitalization range of the companies in the Russell Midcap® Index at the time of investment. As of December 31, 2012 the market capitalizations of the companies in the Russell Midcap Index ranged from $313 million to $25 billion. 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 (“ADRs”) and U.S. dollar-denominated foreign stocks trading on U.S. exchanges (collectively referred to as “stocks”).

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 reducing volatility and downside risk.

In general, the sub-advisors select stocks that, in their opinion, have most or all of the following characteristics (relative to the Russell Midcap Index):

u above-average earnings growth potential,

u below-average price to earnings ratio,

u below-average price to book value ratio, and

u above-average dividend yields.

One sub-advisor invests in medium-sized companies with low price to earnings and price to book value ratios and high dividend yields in relation to the Russell Midcap Index. Through extensive research and meetings with company management teams, the sub-advisor seeks to identify companies that not only possess these three characteristics, but that also exhibit high or improving profitability translating into earnings growth above that of the overall Russell Midcap Index. The sub-advisor’s portfolio will generally consist of 35 to 45 stocks.

The second sub-advisor invests in medium-sized companies and intends to maintain a concentrated portfolio of 30 to 40 stocks selected from the most undervalued or “deep” value portion of its investment universe. That sub-advisor looks for companies within that universe that sell for a low price relative to normal earnings (with “normal earnings” defined as a 5 year estimate of what the company should earn in a normal environment based on research of the company’s history and the history of its industry).

The third sub-advisor utilizes a classic value-driven philosophy based on the belief that leading businesses selling at a discount to fair value have the potential to generate excess returns. The strategy focuses on stocks that are temporarily out of favor in the market; specifically, companies with higher returns on capital, free cash flow and strong balance sheets. These companies often dominate a particular industry niche, generally have significant barriers to entry and, as a result, are able to perpetuate a higher return on capital over time.

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 security 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.

The Fund may invest cash balances in money market funds and may purchase and sell futures contracts to gain market exposure on cash balances or reduce market exposure in anticipation of liquidity needs.

Risk [Heading]

rr_RiskHeading

Principal Risks

Risk Narrative [Text Block]

rr_RiskNarrativeTextBlock

There is no assurance that the Fund will achieve its investment objective and you could lose part or all of your investment in the Fund. The Fund is not designed for investors who need an assured level of income and is intended to be a long-term investment. The Fund is not a complete investment program and may not be appropriate for all investors. Investors should carefully consider their own investment goals and risk tolerance before investing in the Fund. The principal risks of investing in the Fund are:

Equity Investments Risk

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, REITs, ADRs, and U.S. dollar-denominated foreign stocks traded on U.S. exchanges. Such investments may expose the Fund to additional risks.

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 traded 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.

Foreign Exposure Risk

The Fund may invest in securities issued by foreign companies through ADRs and U.S. dollar-denominated foreign stocks trading on U.S. exchanges. ADRs 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. Non-U.S. investments carry potential risks not associated with U.S. investments. Such risks include, but are not limited to: (1) currency exchange rate fluctuations, (2) political and financial instability, (3) less liquidity and greater volatility, (4) lack of uniform accounting, auditing and financial reporting standards, (5) increased price volatility, and (6) less government regulation and supervision of foreign stock exchanges, brokers and listed companies.

Futures Contracts Risk

Futures contracts are a type of derivative investment. A derivative refers to any financial instrument whose value is derived, at least in part, from the price of another security or a specified index, asset or rate. The use of derivatives presents risks different from, and possibly greater than, the risks associated with investing directly in traditional securities. Gains or losses in a derivative may be magnified and may be much greater than the derivatives original cost.

There may be an imperfect correlation between the changes in market value of the securities held by the Fund and the prices of futures contracts. There may not be a liquid secondary market for the futures contract. When the Fund purchases or sells a futures contract, it is subject to daily variation margin calls that could be substantial in the event of adverse price movements. If the Fund has insufficient cash to meet daily variation margin requirements, it might need to sell securities at a time when such sales are disadvantageous.

High Portfolio Turnover Risk

Portfolio turnover is a measure of a Fund’s trading activity over a one-year period. A portfolio turnover rate of 100% would indicate that a Fund sold and replaced the entire value of its securities holdings during the period. High portfolio turnover could increase a Fund’s transaction costs and possibly have a negative impact on performance. Frequent trading by a Fund could also result in increased short-term capital gain distributions to shareholders, which are taxable as ordinary income.

Investment Risk

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. Therefore, you may lose money by investing in the Fund.

Issuer Risk

The value of a security may decline for a number of reasons which directly relate to the issuer, such as management performance, financial leverage and reduced demand for the issuer’s goods or services, as well as the historical and prospective earnings of the issuer and the value of its assets.

Market Events Risk

Turbulence in financial markets and reduced liquidity in equity, credit and fixed-income markets may negatively affect many issuers worldwide which could adversely affect the Fund.

Market Risk

Market risks, including political, regulatory, market and economic developments, and developments that impact specific economic sectors, industries or segments of the market, can affect the value of the Fund’s shares. The Fund’s equity investments are subject to stock market risk, which  involves the possibility that the value of the Fund’s investments in stocks will decline due to drops in the stock market.  From time to time, certain investments 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 holdings to meet redemption requests or other cash needs, the Fund may have to sell them at a loss.

Mid-Capitalization Companies Risk

Investing in the securities of medium capitalization companies involves greater risk and the possibility of greater price volatility than investing in larger capitalization companies and more established companies, since medium-sized companies may have limited operating history, product lines and financial resources, the securities of these companies may lack sufficient market liquidity and can be sensitive to expected changes in interest rates, borrowing costs and earnings.

Securities Selection Risk

Securities selected by the Manager or 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.

Value Stocks Risk

Value stocks are subject to the risk that their intrinsic value may never be realized by the market or that their prices may 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.

Risk Lose Money [Text]

rr_RiskLoseMoney

There is no assurance that the Fund will achieve its investment objective and you could lose part or all of your investment in the Fund.

Risk Not Insured Depository Institution [Text]

rr_RiskNotInsuredDepositoryInstitution

An investment in the Fund is not a deposit of a bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.

Bar Chart and Performance Table [Heading]

rr_BarChartAndPerformanceTableHeading

Fund Performance

Performance Narrative [Text Block]

rr_PerformanceNarrativeTextBlock

The bar chart and table below provide an indication of risk by showing 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® Mid-Cap Value Funds Index, a composite of mutual funds comparable to the Fund.

The chart and the table below show the performance of the Fund’s Institutional Class shares for all periods. The Fund began operations of Institutional Class shares on November 30, 2005, Investor Class shares on March 1, 2006, Advisor Class shares on June 30, 2007, 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 AMR Class of the Fund, which began offering shares on June 30, 2004 and is not offered in this prospectus, is shown for the Institutional Class shares before the date such class was first offered. For the Investor Class, performance results from June 30, 2004 through November 30, 2005 are for the AMR Class and performance results from November 30, 2005 through March 1, 2006 are for the Institutional Class. For the Advisor Class, performance results from June 30, 2004 to November 30, 2005 are for the AMR Class, performance results from November 30, 2005 through February 28, 2006 are for the Institutional Class and performance results from March 1, 2006 to June 30, 2007 are for the Investor Class. For Y Class, A Class and C Class shares, performance results from June 30, 2004 to November 30, 2005 are for the AMR Class and performance results from November 30, 2005 to the inception of the Y Class, A Class and C Class shares are for the Institutional Class.

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.

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.

Performance Information Illustrates Variability of Returns [Text]

rr_PerformanceInformationIllustratesVariabilityOfReturns

The bar chart and table below provide an indication of risk by showing how the Fund's performance has varied from year to year.

Performance Availability Website Address [Text]

rr_PerformanceAvailabilityWebSiteAddress

www.americanbeaconfunds.com

Performance Past Does Not Indicate Future [Text]

rr_PerformancePastDoesNotIndicateFuture

Past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future.

Bar Chart [Heading]

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Calendar year total returns for Institutional Class shares

Bar Chart Narrative [Text Block]

rr_BarChartNarrativeTextBlock

Total Return for the Calendar Year Ended 12/31 of each Year

Bar Chart Does Not Reflect Sales Loads [Text]

rr_BarChartDoesNotReflectSalesLoads

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.

Bar Chart Closing [Text Block]

rr_BarChartClosingTextBlock

Highest Quarterly Return:	24.36%
(1/1/05 through 12/31/12)	(3rd Quarter 2009)
Lowest Quarterly Return:	-21.30%
(1/1/05 through 12/31/12)	(4th Quarter 2008)

Highest Quarterly Return, Label

rr_HighestQuarterlyReturnLabel

Highest Quarterly Return:

Highest Quarterly Return, Date

rr_BarChartHighestQuarterlyReturnDate

Sep. 30, 2009

Highest Quarterly Return

rr_BarChartHighestQuarterlyReturn

24.36%

Lowest Quarterly Return, Label

rr_LowestQuarterlyReturnLabel

Lowest Quarterly Return:

Lowest Quarterly Return, Date

rr_BarChartLowestQuarterlyReturnDate

Dec. 31, 2008

Lowest Quarterly Return

rr_BarChartLowestQuarterlyReturn

(21.30%)

Performance Table Heading

rr_PerformanceTableHeading

Average Annual Total Returns For the periods ended December 31, 2012

Performance Table Uses Highest Federal Rate

rr_PerformanceTableUsesHighestFederalRate

After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes.

Performance Table Not Relevant to Tax Deferred

rr_PerformanceTableNotRelevantToTaxDeferred

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.

Performance Table One Class of after Tax Shown [Text]

rr_PerformanceTableOneClassOfAfterTaxShown

After-tax returns are shown only for Institutional Class shares; after-tax returns for other share classes will vary.

Russell Midcap Value Index

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

18.51%

^[1]

5 Years

rr_AverageAnnualReturnYear05

3.79%

^[1]

Since Inception

rr_AverageAnnualReturnSinceInception

7.54%

^[1]

Lipper Mid-Cap Value Funds Index

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

18.32%

^[1]

5 Years

rr_AverageAnnualReturnYear05

2.98%

^[1]

Since Inception

rr_AverageAnnualReturnSinceInception

6.23%

^[1]

Institutional Class

Risk/Return:

rr_RiskReturnAbstract

Maximum sales charge imposed on purchases (as a percentage of offering price)

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

none

Maximum deferred sales charge load (as a percentage of the lower of original offering price or redemption proceeds)

rr_MaximumDeferredSalesChargeOverOther

none

Management fees

rr_ManagementFeesOverAssets

0.58%

Distribution and/or service (12b-1) fees

rr_DistributionAndService12b1FeesOverAssets

none

Other expenses

rr_OtherExpensesOverAssets

0.48%

Acquired Fund Fees and Expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.01%

Total annual fund operating expenses

rr_ExpensesOverAssets

1.07%

^[2]

Fee Waiver or Reimbursement

rr_FeeWaiverOrReimbursementOverAssets

(0.08%)

Total annual fund operating expenses after expense reduction and reimbursement

rr_NetExpensesOverAssets

0.99%

^[3]

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

101

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

332

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

582

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

1,298

Annual Return 2005

rr_AnnualReturn2005

9.06%

Annual Return 2006

rr_AnnualReturn2006

17.95%

Annual Return 2007

rr_AnnualReturn2007

(5.13%)

Annual Return 2008

rr_AnnualReturn2008

(36.22%)

Annual Return 2009

rr_AnnualReturn2009

41.29%

Annual Return 2010

rr_AnnualReturn2010

21.69%

Annual Return 2011

rr_AnnualReturn2011

0.33%

Annual Return 2012

rr_AnnualReturn2012

16.00%

1 Year

rr_AverageAnnualReturnYear01

16.00%

^[1]

5 Years

rr_AverageAnnualReturnYear05

5.00%

^[1]

Since Inception

rr_AverageAnnualReturnSinceInception

6.82%

^[1]

Inception Date

rr_AverageAnnualReturnInceptionDate

Nov. 30, 2005

^[1]

Institutional Class | After Taxes on Distributions

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

14.54%

^[1]

5 Years

rr_AverageAnnualReturnYear05

4.55%

^[1]

Since Inception

rr_AverageAnnualReturnSinceInception

5.38%

^[1]

Institutional Class | After Taxes on Distributions and Sales

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

11.39%

^[1]

5 Years

rr_AverageAnnualReturnYear05

4.17%

^[1]

Since Inception

rr_AverageAnnualReturnSinceInception

5.23%

^[1]

Investor Class

Risk/Return:

rr_RiskReturnAbstract

Maximum sales charge imposed on purchases (as a percentage of offering price)

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

none

Maximum deferred sales charge load (as a percentage of the lower of original offering price or redemption proceeds)

rr_MaximumDeferredSalesChargeOverOther

none

Management fees

rr_ManagementFeesOverAssets

0.58%

Distribution and/or service (12b-1) fees

rr_DistributionAndService12b1FeesOverAssets

none

Other expenses

rr_OtherExpensesOverAssets

0.86%

Acquired Fund Fees and Expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.01%

Total annual fund operating expenses

rr_ExpensesOverAssets

1.45%

^[2]

Fee Waiver or Reimbursement

rr_FeeWaiverOrReimbursementOverAssets

(0.21%)

Total annual fund operating expenses after expense reduction and reimbursement

rr_NetExpensesOverAssets

1.24%

^[3]

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

126

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

438

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

772

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

1,716

1 Year

rr_AverageAnnualReturnYear01

15.71%

^[1]

5 Years

rr_AverageAnnualReturnYear05

4.84%

^[1]

Since Inception

rr_AverageAnnualReturnSinceInception

6.67%

^[1]

Inception Date

rr_AverageAnnualReturnInceptionDate

Feb. 28, 2006

^[1]

Advisor Class

Risk/Return:

rr_RiskReturnAbstract

Maximum sales charge imposed on purchases (as a percentage of offering price)

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

none

Maximum deferred sales charge load (as a percentage of the lower of original offering price or redemption proceeds)

rr_MaximumDeferredSalesChargeOverOther

none

Management fees

rr_ManagementFeesOverAssets

0.58%

Distribution and/or service (12b-1) fees

rr_DistributionAndService12b1FeesOverAssets

0.25%

Other expenses

rr_OtherExpensesOverAssets

1.16%

Acquired Fund Fees and Expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.01%

Total annual fund operating expenses

rr_ExpensesOverAssets

2.00%

^[2]

Fee Waiver or Reimbursement

rr_FeeWaiverOrReimbursementOverAssets

(0.50%)

Total annual fund operating expenses after expense reduction and reimbursement

rr_NetExpensesOverAssets

1.50%

^[3]

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

153

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

579

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

1,032

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

2,287

1 Year

rr_AverageAnnualReturnYear01

15.43%

^[1]

5 Years

rr_AverageAnnualReturnYear05

4.59%

^[1]

Since Inception

rr_AverageAnnualReturnSinceInception

6.51%

^[1]

Inception Date

rr_AverageAnnualReturnInceptionDate

Jun. 29, 2007

^[1]

Y Class

Risk/Return:

rr_RiskReturnAbstract

Maximum sales charge imposed on purchases (as a percentage of offering price)

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

none

Maximum deferred sales charge load (as a percentage of the lower of original offering price or redemption proceeds)

rr_MaximumDeferredSalesChargeOverOther

none

Management fees

rr_ManagementFeesOverAssets

0.58%

Distribution and/or service (12b-1) fees

rr_DistributionAndService12b1FeesOverAssets

none

Other expenses

rr_OtherExpensesOverAssets

0.70%

Acquired Fund Fees and Expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.01%

Total annual fund operating expenses

rr_ExpensesOverAssets

1.29%

^[2]

Fee Waiver or Reimbursement

rr_FeeWaiverOrReimbursementOverAssets

(0.20%)

Total annual fund operating expenses after expense reduction and reimbursement

rr_NetExpensesOverAssets

1.09%

^[3]

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

111

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

390

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

689

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

1,540

1 Year

rr_AverageAnnualReturnYear01

15.98%

^[1]

5 Years

rr_AverageAnnualReturnYear05

4.97%

^[1]

Since Inception

rr_AverageAnnualReturnSinceInception

6.80%

^[1]

Inception Date

rr_AverageAnnualReturnInceptionDate

Mar. 01, 2010

^[1]

A Class

Risk/Return:

rr_RiskReturnAbstract

Maximum sales charge imposed on purchases (as a percentage of offering price)

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

5.75%

Maximum deferred sales charge load (as a percentage of the lower of original offering price or redemption proceeds)

rr_MaximumDeferredSalesChargeOverOther

none

Management fees

rr_ManagementFeesOverAssets

0.58%

Distribution and/or service (12b-1) fees

rr_DistributionAndService12b1FeesOverAssets

0.25%

Other expenses

rr_OtherExpensesOverAssets

0.78%

Acquired Fund Fees and Expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.01%

Total annual fund operating expenses

rr_ExpensesOverAssets

1.62%

^[2]

Fee Waiver or Reimbursement

rr_FeeWaiverOrReimbursementOverAssets

(0.12%)

Total annual fund operating expenses after expense reduction and reimbursement

rr_NetExpensesOverAssets

1.50%

^[3]

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

719

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

1,046

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

1,396

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

2,379

1 Year

rr_AverageAnnualReturnYear01

15.45%

^[1]

5 Years

rr_AverageAnnualReturnYear05

4.55%

^[1]

Since Inception

rr_AverageAnnualReturnSinceInception

6.50%

^[1]

Inception Date

rr_AverageAnnualReturnInceptionDate

May 17, 2010

^[1]

C Class

Risk/Return:

rr_RiskReturnAbstract

Maximum sales charge imposed on purchases (as a percentage of offering price)

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

none

Maximum deferred sales charge load (as a percentage of the lower of original offering price or redemption proceeds)

rr_MaximumDeferredSalesChargeOverOther

1.00%

Management fees

rr_ManagementFeesOverAssets

0.58%

Distribution and/or service (12b-1) fees

rr_DistributionAndService12b1FeesOverAssets

1.00%

Other expenses

rr_OtherExpensesOverAssets

0.88%

Acquired Fund Fees and Expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.01%

Total annual fund operating expenses

rr_ExpensesOverAssets

2.47%

^[2]

Fee Waiver or Reimbursement

rr_FeeWaiverOrReimbursementOverAssets

(0.22%)

Total annual fund operating expenses after expense reduction and reimbursement

rr_NetExpensesOverAssets

2.25%

^[3]

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

328

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

749

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

1,296

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

2,790

Expense Example, No Redemption, 1 Year

rr_ExpenseExampleNoRedemptionYear01

228

Expense Example, No Redemption, 3 Years

rr_ExpenseExampleNoRedemptionYear03

749

Expense Example, No Redemption, 5 Years

rr_ExpenseExampleNoRedemptionYear05

1,296

Expense Example, No Redemption, 10 Years

rr_ExpenseExampleNoRedemptionYear10

$ 2,790

1 Year

rr_AverageAnnualReturnYear01

14.64%

^[1]

5 Years

rr_AverageAnnualReturnYear05

4.21%

^[1]

Since Inception

rr_AverageAnnualReturnSinceInception

6.29%

^[1]

Inception Date

rr_AverageAnnualReturnInceptionDate

Sep. 01, 2010

^[1]

[1] 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.

[2] The Total Annual Fund Operating Expenses do not correlate to the ratio of expenses to average net assets provided in the Fund's Financial Highlights table, which reflects the operating expenses of the Fund and does not include Acquired Fund Fees and Expenses.

[3] The Manager has contractually agreed to reduce and/or reimburse the A Class, C Class, Y Class, Advisor Class, Institutional Class and Investor Class of the Fund for Other Expenses, as applicable, through February 28, 2014 to the extent that Total Annual Fund Operating Expenses exceed 1.49% for the A Class, 2.24% for the C Class, 1.08% for the Y Class, 1.49% for the Advisor Class, 0.98% for the Institutional Class and 1.23% for the Investor 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.

XML

Label

Element

Value

Risk/Return:

rr_RiskReturnAbstract

Risk/Return [Heading]

rr_RiskReturnHeading

American Beacon International Equity Fund

Objective [Heading]

rr_ObjectiveHeading

Investment Objective

Objective, Primary [Text Block]

rr_ObjectivePrimaryTextBlock

The Fund’s investment objective is long-term capital appreciation.

Expense [Heading]

rr_ExpenseHeading

Fees and Expenses of the Fund

Expense Narrative [Text Block]

rr_ExpenseNarrativeTextBlock

This table describes the fees and expenses that you may pay if you buy and hold shares of the Fund. 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 101 of the Prospectus and “Additional Purchase and Sale Information for A Class Shares” on page 78 of the statement of additional information.

Shareholder Fees Caption [Text]

rr_ShareholderFeesCaption

Shareholder Fees (fees paid directly from your investment)

Operating Expenses Caption [Text]

rr_OperatingExpensesCaption

Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)

Fee Waiver or Reimbursement over Assets, Date of Termination

rr_FeeWaiverOrReimbursementOverAssetsDateOfTermination

2014-02-28

Portfolio Turnover [Heading]

rr_PortfolioTurnoverHeading

Portfolio Turnover

Portfolio Turnover [Text Block]

rr_PortfolioTurnoverTextBlock

The Fund pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when fund shares are held in a taxable account. These costs, which are not reflected in annual fund operating expenses or in the example, affect the Fund’s performance. During the most recent fiscal year, the Fund’s portfolio turnover rate was 60% of the average value of its portfolio.

Portfolio Turnover, Rate

rr_PortfolioTurnoverRate

60.00%

Expense Breakpoint Discounts [Text]

rr_ExpenseBreakpointDiscounts

You may qualify for sales discounts if you and your eligible family members invest, or agree to invest in the future, at least $50,000 in the A Class shares of the American Beacon Funds.

Expense Breakpoint, Minimum Investment Required [Amount]

rr_ExpenseBreakpointMinimumInvestmentRequiredAmount

$ 50,000

Expenses Not Correlated to Ratio Due to Acquired Fund Fees [Text]

rr_ExpensesNotCorrelatedToRatioDueToAcquiredFundFees

The Total Annual Fund Operating Expenses do not correlate to the ratio of expenses to average net assets provided in the Fund's Financial Highlights table, which reflects the operating expenses of the Fund and does not include Acquired Fund Fees and Expenses.

Expense Example [Heading]

rr_ExpenseExampleHeading

Example

Expense Example Narrative [Text Block]

rr_ExpenseExampleNarrativeTextBlock

This Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return each year and that the Fund’s operating expenses remain the same. Although your actual costs may be higher or lower, based on these assumptions, your costs would be:

Expense Example, No Redemption, By Year, Caption [Text]

rr_ExpenseExampleNoRedemptionByYearCaption

Assuming no redemption of shares:

Strategy [Heading]

rr_StrategyHeading

Principal Investment Strategies

Strategy Narrative [Text Block]

rr_StrategyNarrativeTextBlock

Under normal circumstances, at least 80% of the Fund’s net assets (plus the amount of any borrowings for investment purposes) are invested in common stocks and securities convertible into common stocks (collectively, “stocks”) of issuers based in at least three different countries located outside the United States. The Fund will primarily invest in countries comprising the Morgan Stanley Capital International® Europe Australasia Far East Index (“MSCI EAFE Index”). The MSCI EAFE Index is comprised of equity securities of companies from various industrial sectors whose primary trading markets are located outside the United States. Companies included in the MSCI EAFE Index are selected from among the larger capitalization companies in these markets. The Fund may invest in companies of all market capitalizations. The Fund may use futures contracts and foreign currency forward contracts, including non-deliverable forwards ("NDFs") contracts, as a hedge against foreign currency fluctuations.

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 reducing volatility and downside risk.

The sub-advisors select stocks that, in their opinion, have most or all of the following characteristics (relative to that stock’s country, sector or industry):

u above-average return on equity or earnings growth potential,

u below-average price to earnings or price to cash flow ratio,

u below-average price to book value ratio, and

u above-average dividend yields.

The sub-advisors may consider potential changes in currency exchange rates when choosing stocks. Each of the 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. A sub-advisor may trade forward foreign currency contracts, including NDF contracts, or currency futures in an attempt to reduce the Fund’s risk exposure to adverse fluctuations in currency exchange rates.

The Fund may invest cash balances in money market funds and may purchase and sell futures contracts to gain market exposure on cash balances or reduce market exposure in anticipation of liquidity needs.

The Fund may lend its securities to broker-dealers and other institutions to earn additional income.

Risk [Heading]

rr_RiskHeading

Principal Risks

Risk Narrative [Text Block]

rr_RiskNarrativeTextBlock

There is no assurance that the Fund will achieve its investment objective and you could lose part or all of your investment in the Fund. The Fund is not designed for investors who need an assured level of income and is intended to be a long-term investment. The Fund is not a complete investment program and may not be appropriate for all investors. Investors should carefully consider their own investment goals and risk tolerance before investing in the Fund. The principal risks of investing in the Fund are:

Currency Risk

Foreign currencies may decline in value relative to the U.S. dollar and affect the Fund’s investments in foreign (non-U.S.) currencies or in securities that trade in, and receive revenues in, or in derivatives that provide exposure to, foreign (non-U.S.) currencies.

Equity Investments Risk

Equity securities generally are subject to market risk. The Fund’s investments in equity securities may include common stocks and securities convertible into or exchangeable for common stocks. Investing in such securities may expose the Fund to additional risk.

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 movement in interest rates.  In addition, convertible securities are subject to risk that the credit standing of the issuer may have an effect on the security’s investment value.

Foreign Investing Risk

Non-U.S. investments carry potential risks not associated with U.S. investments. Such risks include, but are not limited to: (1) currency exchange rate fluctuations, (2) political and financial instability, (3) less liquidity and greater volatility, (4) lack of uniform accounting, auditing and financial reporting standards, (5) increased price volatility; (6) less government regulation and supervision of foreign stock exchanges, brokers and listed companies; and (7) delays in transaction settlement in some foreign markets.

Futures Contracts and Foreign Currency Forward Contracts Risk

Futures contracts and foreign currency forward contracts, including NDFs, are derivative instruments pursuant to a contract with a counterparty to pay a fixed price for an agreed amount of securities or other underlying assets at an agreed date or to buy or sell a specific currency at a future date at a price set at the time of the contract. The use of such derivative instruments may expose the Fund to additional risks that it would not be subject to if they invested directly in the securities underlying those derivatives. Futures contracts may experience potentially dramatic price changes (losses) and imperfect correlations between the price of the contract and the underlying security, index or currency which will increase the volatility of the Fund and may involve a small investment of cash relative to the magnitude of the risk assumed. There can be no assurance that any strategy used will succeed. Not all forward contracts, including NDFs, require a counterparty to post collateral, which may expose the Fund to greater losses in the event of a default by a counterparty.

Hedging Risk

Gains or losses from positions in hedging instruments may be much greater than the instrument’s original cost. The counterparty may be unable to honor its financial obligation to a Fund. In addition, the Manager or a sub-advisor may be unable to close the transaction at the time it would like or at the price it believes the security is currently worth.

Investment Risk

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. Therefore, you may lose money by investing in the Fund.

Issuer Risk

The value of a security may decline for a number of reasons which directly relate to the issuer, such as management performance, financial leverage and reduced demand for the issuer’s goods or services, as well as the historical and prospective earnings of the issuer and the value of its assets.

Large Capitalization Companies Risk

The securities of large market capitalization companies may underperform other segments of the market because such companies may be less responsive to competitive challenges and opportunities and may be unable to attain high growth rates during periods of economic expansion.

Market Events Risk

Turbulence in financial markets and reduced liquidity in equity, credit and fixed-income markets may negatively affect many issuers worldwide which could adversely affect the Fund.

Market Risk

Market risks, including political, regulatory, market and economic developments, and developments that impact specific economic sectors, industries or segments of the market, can affect the value of a Fund’s shares. Equity investments are subject to stock market risk, which involves the possibility that the value of the Fund’s investments in stocks of a particular country will decline due to drops in the stock market due to general market, regulatory, political and economic conditions.  From time to time, certain investments 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 holdings to meet redemption requests or other cash needs, the Fund may have to sell them at a loss.

Market Timing Risk

Because the Fund invests in foreign securities, it is particularly subject to the risk of market timing activities. The Fund generally prices foreign securities using their closing prices from the foreign markets in which they trade, typically prior to the Fund’s determination of its net asset value. These prices may be affected by events that occur after the close of a foreign market but before the Fund prices its shares. In such instances, the Fund may fair value foreign securities. However, some investors may engage in frequent short-term trading in the Fund to take advantage of any price differentials that may be reflected in the net asset value of the Fund’s shares. There is no assurance that fair valuation of securities can reduce or eliminate market timing. While the Manager monitors trading in Fund shares, there is no guarantee that it can detect all market timing activities.

Securities Lending Risk

To the extent the Fund lends its securities, it may be subject to the following risks. Borrowers of the Fund’s securities typically provide collateral in the form of cash that is reinvested in securities. The securities in which the collateral is invested may not perform sufficiently to cover the return collateral payments owed to borrowers. In addition, delays may occur in the recovery of securities from borrowers, which could interfere with the Fund’s ability to vote proxies or to settle transactions.

Securities Selection Risk

Securities selected by the Manager or 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.

Value Stocks Risk

Value stocks are subject to the risk that their intrinsic value may never be realized by the market or that their prices may 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.

Risk Lose Money [Text]

rr_RiskLoseMoney

There is no assurance that the Fund will achieve its investment objective and you could lose part or all of your investment in the Fund.

Risk Not Insured Depository Institution [Text]

rr_RiskNotInsuredDepositoryInstitution

An investment in the Fund is not a deposit of a bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.

Bar Chart and Performance Table [Heading]

rr_BarChartAndPerformanceTableHeading

Fund Performance

Performance Narrative [Text Block]

rr_PerformanceNarrativeTextBlock

The bar chart and table below provide an indication of risk by showing 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® International Funds Index, a composite of mutual funds comparable to the Fund.

The chart and the table below show the performance of the Fund’s Institutional Class shares for all periods. The Fund began operations of Advisor Class shares on May 1, 2003, 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 Investor Class is shown for the Advisor Class, A Class and C Class shares and the performance of the Institutional Class is shown for Y Class shares prior to the dates that such newer share classes were first offered. For Retirement Class shares, performance results before May 1, 2003 are for Investor Class shares and performance results from May 1, 2003 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.

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.

Performance Information Illustrates Variability of Returns [Text]

rr_PerformanceInformationIllustratesVariabilityOfReturns

The bar chart and table below provide an indication of risk by showing how the Fund's performance has varied from year to year.

Performance Availability Website Address [Text]

rr_PerformanceAvailabilityWebSiteAddress

www.americanbeaconfunds.com

Performance Past Does Not Indicate Future [Text]

rr_PerformancePastDoesNotIndicateFuture

Past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future.

Bar Chart [Heading]

rr_BarChartHeading

Calendar year total returns for Institutional Class shares

Bar Chart Narrative [Text Block]

rr_BarChartNarrativeTextBlock

Total Return for the Calendar Year Ended 12/31 of each Year

Bar Chart Does Not Reflect Sales Loads [Text]

rr_BarChartDoesNotReflectSalesLoads

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.

Bar Chart Closing [Text Block]

rr_BarChartClosingTextBlock

Highest Quarterly Return:	25.00%
(1/1/03 through 12/31/12)	(2nd Quarter 2009)
Lowest Quarterly Return:	-21.68%
(1/1/03 through 12/31/12)	(3rd Quarter 2011)

Highest Quarterly Return, Label

rr_HighestQuarterlyReturnLabel

Highest Quarterly Return:

Highest Quarterly Return, Date

rr_BarChartHighestQuarterlyReturnDate

Jun. 30, 2009

Highest Quarterly Return

rr_BarChartHighestQuarterlyReturn

25.00%

Lowest Quarterly Return, Label

rr_LowestQuarterlyReturnLabel

Lowest Quarterly Return:

Lowest Quarterly Return, Date

rr_BarChartLowestQuarterlyReturnDate

Sep. 30, 2011

Lowest Quarterly Return

rr_BarChartLowestQuarterlyReturn

(21.68%)

Performance Table Heading

rr_PerformanceTableHeading

Average Annual Total Returns For the periods ended December 31, 2012

Performance Table Uses Highest Federal Rate

rr_PerformanceTableUsesHighestFederalRate

After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes.

Performance Table Not Relevant to Tax Deferred

rr_PerformanceTableNotRelevantToTaxDeferred

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.

Performance Table One Class of after Tax Shown [Text]

rr_PerformanceTableOneClassOfAfterTaxShown

After-tax returns are shown only for Institutional Class shares; after-tax returns for other share classes will vary.

MCSI EAFE Index

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

17.32%

^[1]

5 Years

rr_AverageAnnualReturnYear05

(3.69%)

^[1]

10 Years

rr_AverageAnnualReturnYear10

8.21%

^[1]

Lipper International Funds Index

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

19.70%

^[1]

5 Years

rr_AverageAnnualReturnYear05

(2.81%)

^[1]

10 Years

rr_AverageAnnualReturnYear10

8.81%

^[1]

Institutional Class

Risk/Return:

rr_RiskReturnAbstract

Maximum sales charge imposed on purchases (as a percentage of offering price)

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

none

Maximum deferred sales charge load (as a percentage of the lower of original offering price or redemption proceeds)

rr_MaximumDeferredSalesChargeOverOther

none

Management fees

rr_ManagementFeesOverAssets

0.32%

Distribution and/or service (12b-1) fees

rr_DistributionAndService12b1FeesOverAssets

none

Other expenses

rr_OtherExpensesOverAssets

0.40%

Acquired Fund Fees and Expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.01%

Total annual fund operating expenses

rr_ExpensesOverAssets

0.73%

^[2]

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

75

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

234

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

407

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

908

Annual Return 2003

rr_AnnualReturn2003

41.88%

Annual Return 2004

rr_AnnualReturn2004

23.92%

Annual Return 2005

rr_AnnualReturn2005

11.10%

Annual Return 2006

rr_AnnualReturn2006

26.29%

Annual Return 2007

rr_AnnualReturn2007

9.73%

Annual Return 2008

rr_AnnualReturn2008

(40.57%)

Annual Return 2009

rr_AnnualReturn2009

29.75%

Annual Return 2010

rr_AnnualReturn2010

6.83%

Annual Return 2011

rr_AnnualReturn2011

(11.54%)

Annual Return 2012

rr_AnnualReturn2012

21.51%

1 Year

rr_AverageAnnualReturnYear01

21.51%

^[1]

5 Years

rr_AverageAnnualReturnYear05

(2.41%)

^[1]

10 Years

rr_AverageAnnualReturnYear10

9.13%

^[1]

Inception Date

rr_AverageAnnualReturnInceptionDate

Aug. 07, 1991

^[1]

Institutional Class | After Taxes on Distributions

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

20.48%

^[1]

5 Years

rr_AverageAnnualReturnYear05

(2.75%)

^[1]

10 Years

rr_AverageAnnualReturnYear10

8.39%

^[1]

Institutional Class | After Taxes on Distributions and Sales

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

13.98%

^[1]

5 Years

rr_AverageAnnualReturnYear05

(1.93%)

^[1]

10 Years

rr_AverageAnnualReturnYear10

8.17%

^[1]

Investor Class

Risk/Return:

rr_RiskReturnAbstract

Maximum sales charge imposed on purchases (as a percentage of offering price)

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

none

Maximum deferred sales charge load (as a percentage of the lower of original offering price or redemption proceeds)

rr_MaximumDeferredSalesChargeOverOther

none

Management fees

rr_ManagementFeesOverAssets

0.32%

Distribution and/or service (12b-1) fees

rr_DistributionAndService12b1FeesOverAssets

none

Other expenses

rr_OtherExpensesOverAssets

0.77%

Acquired Fund Fees and Expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.01%

Total annual fund operating expenses

rr_ExpensesOverAssets

1.10%

^[2]

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

112

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

350

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

607

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

1,341

1 Year

rr_AverageAnnualReturnYear01

21.16%

^[1]

5 Years

rr_AverageAnnualReturnYear05

(2.72%)

^[1]

10 Years

rr_AverageAnnualReturnYear10

8.65%

^[1]

Inception Date

rr_AverageAnnualReturnInceptionDate

Aug. 01, 1994

^[1]

Advisor Class

Risk/Return:

rr_RiskReturnAbstract

Maximum sales charge imposed on purchases (as a percentage of offering price)

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

none

Maximum deferred sales charge load (as a percentage of the lower of original offering price or redemption proceeds)

rr_MaximumDeferredSalesChargeOverOther

none

Management fees

rr_ManagementFeesOverAssets

0.32%

Distribution and/or service (12b-1) fees

rr_DistributionAndService12b1FeesOverAssets

0.25%

Other expenses

rr_OtherExpensesOverAssets

0.74%

Acquired Fund Fees and Expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.01%

Total annual fund operating expenses

rr_ExpensesOverAssets

1.32%

^[2]

Fee Waiver or Reimbursement

rr_FeeWaiverOrReimbursementOverAssets

(0.07%)

Total annual fund operating expenses after expense reduction and reimbursement

rr_NetExpensesOverAssets

1.25%

^[3]

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

127

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

411

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

716

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

1,583

1 Year

rr_AverageAnnualReturnYear01

20.90%

^[1]

5 Years

rr_AverageAnnualReturnYear05

(2.97%)

^[1]

10 Years

rr_AverageAnnualReturnYear10

8.57%

^[1]

Inception Date

rr_AverageAnnualReturnInceptionDate

May 01, 2003

^[1]

Retirement Class

Risk/Return:

rr_RiskReturnAbstract

Maximum sales charge imposed on purchases (as a percentage of offering price)

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

none

Maximum deferred sales charge load (as a percentage of the lower of original offering price or redemption proceeds)

rr_MaximumDeferredSalesChargeOverOther

none

Management fees

rr_ManagementFeesOverAssets

0.32%

Distribution and/or service (12b-1) fees

rr_DistributionAndService12b1FeesOverAssets

0.50%

Other expenses

rr_OtherExpensesOverAssets

5.58%

Acquired Fund Fees and Expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.01%

Total annual fund operating expenses

rr_ExpensesOverAssets

6.41%

^[2]

Fee Waiver or Reimbursement

rr_FeeWaiverOrReimbursementOverAssets

(4.93%)

Total annual fund operating expenses after expense reduction and reimbursement

rr_NetExpensesOverAssets

1.48%

^[3]

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

151

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

1,460

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

2,731

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

5,758

1 Year

rr_AverageAnnualReturnYear01

20.76%

^[1]

5 Years

rr_AverageAnnualReturnYear05

(3.04%)

^[1]

10 Years

rr_AverageAnnualReturnYear10

8.53%

^[1]

Inception Date

rr_AverageAnnualReturnInceptionDate

May 01, 2009

^[1]

Y Class

Risk/Return:

rr_RiskReturnAbstract

Maximum sales charge imposed on purchases (as a percentage of offering price)

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

none

Maximum deferred sales charge load (as a percentage of the lower of original offering price or redemption proceeds)

rr_MaximumDeferredSalesChargeOverOther

none

Management fees

rr_ManagementFeesOverAssets

0.32%

Distribution and/or service (12b-1) fees

rr_DistributionAndService12b1FeesOverAssets

none

Other expenses

rr_OtherExpensesOverAssets

0.48%

Acquired Fund Fees and Expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.01%

Total annual fund operating expenses

rr_ExpensesOverAssets

0.81%

^[2]

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

83

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

259

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

450

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

1,003

1 Year

rr_AverageAnnualReturnYear01

21.47%

^[1]

5 Years

rr_AverageAnnualReturnYear05

(2.45%)

^[1]

10 Years

rr_AverageAnnualReturnYear10

9.11%

^[1]

Inception Date

rr_AverageAnnualReturnInceptionDate

Aug. 03, 2009

^[1]

A Class

Risk/Return:

rr_RiskReturnAbstract

Maximum sales charge imposed on purchases (as a percentage of offering price)

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

5.75%

Maximum deferred sales charge load (as a percentage of the lower of original offering price or redemption proceeds)

rr_MaximumDeferredSalesChargeOverOther

none

Management fees

rr_ManagementFeesOverAssets

0.32%

Distribution and/or service (12b-1) fees

rr_DistributionAndService12b1FeesOverAssets

0.25%

Other expenses

rr_OtherExpensesOverAssets

0.72%

Acquired Fund Fees and Expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.01%

Total annual fund operating expenses

rr_ExpensesOverAssets

1.30%

^[2]

Fee Waiver or Reimbursement

rr_FeeWaiverOrReimbursementOverAssets

(0.04%)

Total annual fund operating expenses after expense reduction and reimbursement

rr_NetExpensesOverAssets

1.26%

^[3]

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

696

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

959

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

1,242

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

2,048

1 Year

rr_AverageAnnualReturnYear01

20.88%

^[1]

5 Years

rr_AverageAnnualReturnYear05

(2.81%)

^[1]

10 Years

rr_AverageAnnualReturnYear10

8.80%

^[1]

Inception Date

rr_AverageAnnualReturnInceptionDate

May 17, 2010

^[1]

C Class

Risk/Return:

rr_RiskReturnAbstract

Maximum sales charge imposed on purchases (as a percentage of offering price)

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

none

Maximum deferred sales charge load (as a percentage of the lower of original offering price or redemption proceeds)

rr_MaximumDeferredSalesChargeOverOther

1.00%

Management fees

rr_ManagementFeesOverAssets

0.32%

Distribution and/or service (12b-1) fees

rr_DistributionAndService12b1FeesOverAssets

1.00%

Other expenses

rr_OtherExpensesOverAssets

0.80%

Acquired Fund Fees and Expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.01%

Total annual fund operating expenses

rr_ExpensesOverAssets

2.13%

^[2]

Fee Waiver or Reimbursement

rr_FeeWaiverOrReimbursementOverAssets

(0.13%)

Total annual fund operating expenses after expense reduction and reimbursement

rr_NetExpensesOverAssets

2.00%

^[3]

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

303

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

655

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

1,133

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

2,452

Expense Example, No Redemption, 1 Year

rr_ExpenseExampleNoRedemptionYear01

203

Expense Example, No Redemption, 3 Years

rr_ExpenseExampleNoRedemptionYear03

655

Expense Example, No Redemption, 5 Years

rr_ExpenseExampleNoRedemptionYear05

1,133

Expense Example, No Redemption, 10 Years

rr_ExpenseExampleNoRedemptionYear10

$ 2,452

1 Year

rr_AverageAnnualReturnYear01

20.05%

^[1]

5 Years

rr_AverageAnnualReturnYear05

(3.16%)

^[1]

10 Years

rr_AverageAnnualReturnYear10

8.60%

^[1]

Inception Date

rr_AverageAnnualReturnInceptionDate

Sep. 01, 2010

^[1]

[1] 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.

[2] The Total Annual Fund Operating Expenses do not correlate to the ratio of expenses to average net assets provided in the Fund's Financial Highlights table, which reflects the operating expenses of the Fund and does not include Acquired Fund Fees and Expenses.

[3] The Manager has contractually agreed to reduce and/or reimburse the A Class, C Class Advisor Class and Retirement Class of the Fund for Other Expenses, as applicable, through February 28, 2014 to the extent that Total Annual Fund Operating Expenses exceed 1.25% for the A Class, 1.99% for the C Class, 1.24% for the Advisor Class and 1.47% for the Retirement 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.

XML

Label

Element

Value

Risk/Return:

rr_RiskReturnAbstract

Risk/Return [Heading]

rr_RiskReturnHeading

American Beacon Balanced Fund

Objective [Heading]

rr_ObjectiveHeading

Investment Objective

Objective, Primary [Text Block]

rr_ObjectivePrimaryTextBlock

The Fund’s investment objective is income and capital appreciation.

Expense [Heading]

rr_ExpenseHeading

Fees and Expenses of the Fund

Expense Narrative [Text Block]

rr_ExpenseNarrativeTextBlock

This table describes the fees and expenses that you may pay if you buy and hold shares of the Fund. You may qualify for sales discounts if you and your eligible family members invest, or agree to invest in the future, at least $50,000 in 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 101 of the Prospectus and “Additional Purchase and Sale Information for A Class Shares” on page 78 of the statement of additional information.

Shareholder Fees Caption [Text]

rr_ShareholderFeesCaption

Shareholder Fees (fees paid directly from your investment)

Operating Expenses Caption [Text]

rr_OperatingExpensesCaption

Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)

Fee Waiver or Reimbursement over Assets, Date of Termination

rr_FeeWaiverOrReimbursementOverAssetsDateOfTermination

2014-02-28

Portfolio Turnover [Heading]

rr_PortfolioTurnoverHeading

Portfolio Turnover

Portfolio Turnover [Text Block]

rr_PortfolioTurnoverTextBlock

The Fund pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when fund shares are held in a taxable account. These costs, which are not reflected in annual fund operating expenses or in the example, affect the Fund’s performance. During the most recent fiscal year, the Fund’s portfolio turnover rate was 58% of the average value of its portfolio.

Portfolio Turnover, Rate

rr_PortfolioTurnoverRate

58.00%

Expense Breakpoint Discounts [Text]

rr_ExpenseBreakpointDiscounts

You may qualify for sales discounts if you and your eligible family members invest, or agree to invest in the future, at least $50,000 in the A Class shares of the American Beacon Funds.

Expense Breakpoint, Minimum Investment Required [Amount]

rr_ExpenseBreakpointMinimumInvestmentRequiredAmount

$ 50,000

Expenses Not Correlated to Ratio Due to Acquired Fund Fees [Text]

rr_ExpensesNotCorrelatedToRatioDueToAcquiredFundFees

The Total Annual Fund Operating Expenses do not correlate to the ratio of expenses to average net assets provided in the Fund's Financial Highlights table, which reflects the operating expenses of the Fund and does not include Acquired Fund Fees and Expenses.

Expense Example [Heading]

rr_ExpenseExampleHeading

Example

Expense Example Narrative [Text Block]

rr_ExpenseExampleNarrativeTextBlock

This Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return each year and that the Fund’s operating expenses remain the same. Although your actual costs may be higher or lower, based on these assumptions, your costs would be:

Expense Example, No Redemption, By Year, Caption [Text]

rr_ExpenseExampleNoRedemptionByYearCaption

Assuming no redemption of shares:

Strategy [Heading]

rr_StrategyHeading

Principal Investment Strategies

Strategy Narrative [Text Block]

rr_StrategyNarrativeTextBlock

Under normal circumstances, between 50% and 70% of the Fund’s total assets are invested in equity securities and between 30% and 50% of the Fund’s total assets are invested in debt securities.

The Fund’s equity investments may include common stocks, preferred stocks, securities convertible into common stocks, real estate investment trusts (“REITs”), American Depositary Receipts (“ADRs”) and U.S. dollar-denominated foreign stocks traded on U.S. exchanges (collectively referred to as “stocks”). The Fund may invest in companies of all market capitalizations.

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 reducing volatility and downside risk.

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):

u above-average earnings growth potential,

u below-average price to earnings ratio,

u below-average price to book value ratio, and

u above-average dividend yields.

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.

The Fund’s debt securities may include: obligations of the U.S. Government, its agencies and instrumentalities, including U.S. Government-sponsored enterprises (some of which are not backed by the full faith and credit of the U.S. Government); U.S. and U.S. dollar-denominated foreign corporate debt securities, such as notes and bonds, mortgage-backed securities; asset-backed securities; master-demand notes and other debt securities. The Fund will only buy debt securities that are deemed by the Manager or sub-advisors, as applicable, to be investment grade at the time of the purchase. If an investment held by the Fund is downgraded below investment grade, the Manager or sub-advisors, as applicable will take action that they believe to be advantageous to the Fund. The Fund has no limitations regarding the maturities of the debt securities it can buy.

In determining which debt securities to buy and sell, the Manager and the sub-advisors generally use a “top-down” or “bottom-up” investment strategy, or a combination of both strategies. The top-down fixed-income investment strategy is implemented as follows:

● Develop an overall investment strategy, including a portfolio duration target, by examining the current trends in the U.S. economy.

● 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.

● Determine the weightings of each security type by analyzing the difference in yield spreads between corporate and U.S. Government securities.

● Select specific debt securities within each security type.

● Review and monitor portfolio composition for changes in credit, risk-return profile and comparisons with benchmarks.

The bottom-up fixed-income investment strategy is implemented as follows:

● Search for eligible securities with a yield to maturity advantage versus a U.S. Government security with a similar maturity.

● Evaluate credit quality of the securities.

● Perform an analysis of the expected price volatility of the securities to changes in interest rates by examining actual price volatility between U.S. Government and non-U.S. Government securities.

The Fund may invest cash balances in other investment companies and may purchase and sell futures contracts to gain market exposure on cash balances or reduce market exposure in anticipation of liquidity needs.

Risk [Heading]

rr_RiskHeading

Principal Risks

Risk Narrative [Text Block]

rr_RiskNarrativeTextBlock

There is no assurance that the Fund will achieve its investment objective and you could lose part or all of your investment in the Fund. The Fund is not designed for investors who need an assured level of income and is intended to be a long-term investment. The Fund is not a complete investment program and may not be appropriate for all investors. Investors should carefully consider their own investment goals and risk tolerance before investing in the Fund. The principal risks of investing in the Fund are:

Credit Risk

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’s credit rating can cause the price of its bonds to go down.

Equity Investments Risk

Equity securities generally are subject to market risk. The Fund’s investments in equity securities may include U.S. and non-U.S. common stocks, preferred stocks, securities convertible into or exchangeable for common stocks, REITs, ADRs, and U.S. dollar-denominated foreign stocks trading on U.S. exchanges. Such investments may expose the Fund to additional risks.

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 traded 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.

Foreign Exposure Risk

The Fund may invest in securities issued by foreign companies through ADRs and U.S. dollar-denominated foreign stocks trading on U.S. exchanges. ADRs 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. The Fund may also invest in U.S. dollar-denominated bonds issued by foreign companies or foreign governments. Non-U.S. investments carry potential risks not associated with U.S. investments. Such risks include, but are not limited to: (1) currency exchange rate fluctuations, (2) political and financial instability, (3) less liquidity and greater volatility, (4) lack of uniform accounting, auditing and financial reporting standards, (5) increased price volatility, and (6) less government regulation and supervision of foreign stock exchanges, brokers and listed companies.

Futures Contracts Risk

Futures contracts are a type of derivative investment. A derivative refers to any financial instrument whose value is derived, at least in part, from the price of another security or a specified index, asset or rate. The use of derivatives presents risks different from, and possibly greater than, the risks associated with investing directly in traditional securities. Gains or losses in a derivative may be magnified and may be much greater than the derivatives original cost.

There may be an imperfect correlation between the changes in market value of the securities or other underlying assets held by the Fund and the prices of futures contracts. There may not be a liquid secondary market for the futures contract. When the Fund purchases or sells a futures contract, it is subject to daily variation margin calls that could be substantial in the event of adverse price movements. If the Fund has insufficient cash to meet daily variation margin requirements, it might need to sell securities at a time when such sales are disadvantageous.

Government-Sponsored Enterprises Risk

Securities held by the Fund that are issued by government-sponsored enterprises, such as the Federal National Mortgage Association (“Fannie Mae”), the Federal Home Loan Mortgage Corporation (“Freddie Mac”), 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.

Interest Rate Risk

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.

Investment Risk

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. Therefore, you may lose money by investing in the Fund.

Issuer Risk

The value of a security may decline for a number of reasons which directly relate to the issuer, such as management performance, financial leverage and reduced demand for the issuer’s goods or services, as well as the historical and prospective earnings of the issuer and the value of its assets.

Large Capitalization Companies Risk

The securities of large market capitalization companies may underperform other segments of the market because such companies may be less responsive to competitive challenges and opportunities and may be unable to attain high growth rates during periods of economic expansion.

Market Events Risk

Turbulence in financial markets and reduced liquidity in equity, credit and fixed-income markets may negatively affect many issuers worldwide which could adversely affect the Fund.

Market Risk

Market risks, including political, regulatory, market and economic developments, and developments that impact specific economic sectors, industries or segments of the market, can affect the value of the Fund’s shares. The Fund’s equity investments are subject to stock market risk, which involves the possibility that the value of the Fund’s investments in stocks will decline due to drops in the stock market. The Fund’s fixed-income investments are subject to the risk that the lack of liquidity or other adverse credit market conditions may hamper the Fund’s ability to purchase and sell the securities. From time to time, certain investments 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 holdings to meet redemption requests or other cash needs, the Fund may have to sell them at a loss.

Other Investment Companies Risk

The Fund may invest in shares of other registered investment companies, including open-end funds, and money market funds. To the extent that the Fund invests in shares of other registered investment companies, you will indirectly bear fees and expenses charged by the underlying funds in addition to the Fund’s direct fees and expenses and will be subject to the risks associated with investments in those funds.

Prepayment and Extension Risk

The Fund’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’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’s effective maturity and a decline in its price.

Securities Selection Risk

Securities selected by the Manager or 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.

Small and Medium Capitalization Companies Risk

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.

U.S. Government Securities Risk

A security backed by the U.S. Treasury or the full faith and credit of the United States is guaranteed only as to the timely payment of interest and principal when held to maturity. The market prices for such securities are not guaranteed and will fluctuate. They are also subject to credit risk and interest rate risk.

Value Stocks Risk

Value stocks are subject to the risk that their intrinsic value may never be realized by the market or that their prices may 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.

Risk Lose Money [Text]

rr_RiskLoseMoney

There is no assurance that the Fund will achieve its investment objective and you could lose part or all of your investment in the Fund.

Risk Not Insured Depository Institution [Text]

rr_RiskNotInsuredDepositoryInstitution

An investment in the Fund is not a deposit of a bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.

Bar Chart and Performance Table [Heading]

rr_BarChartAndPerformanceTableHeading

Fund Performance

Performance Narrative [Text Block]

rr_PerformanceNarrativeTextBlock

The bar chart and table below provide an indication of risk by showing how the Fund’s performance has varied from year to year. The table shows how the Fund’s performance compares to the Russell 1000® Value Index, which is the Fund’s primary benchmark. The table also shows how the Fund’s returns compare to the Barclays® Capital U.S. Aggregate Bond Index, which tracks the performance of fixed-rate debt securities. The Balanced Composite Index is composed of the Russell 1000 Value Index (60%) and the Barclays Capital U.S. Aggregate Bond Index (40%) to reflect the Fund’s allocation of its assets between equity securities and fixed income securities. The Lipper® MTAG Funds Index shows how the Fund’s performance compares to a composite of mutual funds with similar investment objectives.

The chart and the table below show the performance of the Fund’s Institutional Class shares for all periods. The Fund began operations of Advisor Class shares on May 31, 2005, 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 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. 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 share classes had lower expenses than the newer classes, their performance was better than the newer share 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.

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.

Calendar year total returns for Institutional Class shares

Performance Information Illustrates Variability of Returns [Text]

rr_PerformanceInformationIllustratesVariabilityOfReturns

The bar chart and table below provide an indication of risk by showing how the Fund's performance has varied from year to year.

Performance Availability Website Address [Text]

rr_PerformanceAvailabilityWebSiteAddress

www.americanbeaconfunds.com

Performance Past Does Not Indicate Future [Text]

rr_PerformancePastDoesNotIndicateFuture

Past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future.

Bar Chart Narrative [Text Block]

rr_BarChartNarrativeTextBlock

Total Return for the Calendar Year Ended 12/31 of each Year

Bar Chart Does Not Reflect Sales Loads [Text]

rr_BarChartDoesNotReflectSalesLoads

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.

Bar Chart Closing [Text Block]

rr_BarChartClosingTextBlock

Highest Quarterly Return:	13.81%
(1/1/03 through 12/31/12)	(2nd Quarter 2003)
Lowest Quarterly Return:	-11.11%
(1/1/03 through 12/31/12)	(4th Quarter 2008)

Highest Quarterly Return, Label

rr_HighestQuarterlyReturnLabel

Highest Quarterly Return:

Highest Quarterly Return, Date

rr_BarChartHighestQuarterlyReturnDate

Jun. 30, 2003

Highest Quarterly Return

rr_BarChartHighestQuarterlyReturn

13.81%

Lowest Quarterly Return, Label

rr_LowestQuarterlyReturnLabel

Lowest Quarterly Return:

Lowest Quarterly Return, Date

rr_BarChartLowestQuarterlyReturnDate

Dec. 31, 2008

Lowest Quarterly Return

rr_BarChartLowestQuarterlyReturn

(11.11%)

Performance Table Heading

rr_PerformanceTableHeading

Average Annual Total Returns For the periods ended December 31, 2012

Performance Table Uses Highest Federal Rate

rr_PerformanceTableUsesHighestFederalRate

After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes.

Performance Table Not Relevant to Tax Deferred

rr_PerformanceTableNotRelevantToTaxDeferred

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.

Performance Table One Class of after Tax Shown [Text]

rr_PerformanceTableOneClassOfAfterTaxShown

After-tax returns are shown only for Institutional Class shares; after-tax returns for other share classes will vary.

Russell 1000 Value Index

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

17.51%

^[1]

5 Years

rr_AverageAnnualReturnYear05

0.59%

^[1]

10 Years

rr_AverageAnnualReturnYear10

7.38%

^[1]

Barclays Capital U.S. Aggregate Bond Index

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

4.21%

^[1]

5 Years

rr_AverageAnnualReturnYear05

5.95%

^[1]

10 Years

rr_AverageAnnualReturnYear10

5.18%

^[1]

Balanced Composite Index

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

12.17%

^[1]

5 Years

rr_AverageAnnualReturnYear05

3.21%

^[1]

10 Years

rr_AverageAnnualReturnYear10

6.83%

^[1]

Lipper MTAG Funds Index

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

13.67%

^[1]

5 Years

rr_AverageAnnualReturnYear05

2.65%

^[1]

10 Years

rr_AverageAnnualReturnYear10

6.96%

^[1]

Institutional Class

Risk/Return:

rr_RiskReturnAbstract

Maximum sales charge imposed on purchases (as a percentage of offering price)

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

none

Maximum deferred sales charge load (as a percentage of the lower of original offering price or redemption proceeds)

rr_MaximumDeferredSalesChargeOverOther

none

Management fees

rr_ManagementFeesOverAssets

0.22%

Distribution and/or service (12b-1) fees

rr_DistributionAndService12b1FeesOverAssets

none

Other expenses

rr_OtherExpensesOverAssets

0.37%

Acquired Fund Fees and Expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.01%

Total annual fund operating expenses

rr_ExpensesOverAssets

0.60%

^[2]

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

61

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

192

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

335

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

750

Annual Return 2003

rr_AnnualReturn2003

24.26%

Annual Return 2004

rr_AnnualReturn2004

13.09%

Annual Return 2005

rr_AnnualReturn2005

6.53%

Annual Return 2006

rr_AnnualReturn2006

13.85%

Annual Return 2007

rr_AnnualReturn2007

2.05%

Annual Return 2008

rr_AnnualReturn2008

(24.88%)

Annual Return 2009

rr_AnnualReturn2009

20.75%

Annual Return 2010

rr_AnnualReturn2010

11.85%

Annual Return 2011

rr_AnnualReturn2011

1.80%

Annual Return 2012

rr_AnnualReturn2012

14.23%

1 Year

rr_AverageAnnualReturnYear01

14.23%

^[1]

5 Years

rr_AverageAnnualReturnYear05

3.36%

^[1]

10 Years

rr_AverageAnnualReturnYear10

7.45%

^[1]

Inception Date

rr_AverageAnnualReturnInceptionDate

Jul. 17, 1987

^[1]

Institutional Class | After Taxes on Distributions

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

13.04%

^[1]

5 Years

rr_AverageAnnualReturnYear05

2.41%

^[1]

10 Years

rr_AverageAnnualReturnYear10

6.27%

^[1]

Institutional Class | After Taxes on Distributions and Sales

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

9.72%

^[1]

5 Years

rr_AverageAnnualReturnYear05

2.37%

^[1]

10 Years

rr_AverageAnnualReturnYear10

6.01%

^[1]

Investor Class

Risk/Return:

rr_RiskReturnAbstract

Maximum sales charge imposed on purchases (as a percentage of offering price)

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

none

Maximum deferred sales charge load (as a percentage of the lower of original offering price or redemption proceeds)

rr_MaximumDeferredSalesChargeOverOther

none

Management fees

rr_ManagementFeesOverAssets

0.22%

Distribution and/or service (12b-1) fees

rr_DistributionAndService12b1FeesOverAssets

none

Other expenses

rr_OtherExpensesOverAssets

0.70%

Acquired Fund Fees and Expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.01%

Total annual fund operating expenses

rr_ExpensesOverAssets

0.93%

^[2]

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

95

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

297

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

515

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

1,144

1 Year

rr_AverageAnnualReturnYear01

13.79%

^[1]

5 Years

rr_AverageAnnualReturnYear05

3.03%

^[1]

10 Years

rr_AverageAnnualReturnYear10

7.11%

^[1]

Inception Date

rr_AverageAnnualReturnInceptionDate

Aug. 01, 1994

^[1]

Advisor Class

Risk/Return:

rr_RiskReturnAbstract

Maximum sales charge imposed on purchases (as a percentage of offering price)

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

none

Maximum deferred sales charge load (as a percentage of the lower of original offering price or redemption proceeds)

rr_MaximumDeferredSalesChargeOverOther

none

Management fees

rr_ManagementFeesOverAssets

0.22%

Distribution and/or service (12b-1) fees

rr_DistributionAndService12b1FeesOverAssets

0.25%

Other expenses

rr_OtherExpensesOverAssets

0.62%

Acquired Fund Fees and Expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.01%

Total annual fund operating expenses

rr_ExpensesOverAssets

1.10%

^[2]

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

112

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

350

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

607

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

1,341

1 Year

rr_AverageAnnualReturnYear01

13.67%

^[1]

5 Years

rr_AverageAnnualReturnYear05

2.83%

^[1]

10 Years

rr_AverageAnnualReturnYear10

6.93%

^[1]

Inception Date

rr_AverageAnnualReturnInceptionDate

May 31, 2005

^[1]

Y Class

Risk/Return:

rr_RiskReturnAbstract

Maximum sales charge imposed on purchases (as a percentage of offering price)

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

none

Maximum deferred sales charge load (as a percentage of the lower of original offering price or redemption proceeds)

rr_MaximumDeferredSalesChargeOverOther

none

Management fees

rr_ManagementFeesOverAssets

0.22%

Distribution and/or service (12b-1) fees

rr_DistributionAndService12b1FeesOverAssets

none

Other expenses

rr_OtherExpensesOverAssets

0.48%

Acquired Fund Fees and Expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.01%

Total annual fund operating expenses

rr_ExpensesOverAssets

0.71%

^[2]

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

73

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

228

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

396

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

882

1 Year

rr_AverageAnnualReturnYear01

14.12%

^[1]

5 Years

rr_AverageAnnualReturnYear05

3.28%

^[1]

10 Years

rr_AverageAnnualReturnYear10

7.41%

^[1]

Inception Date

rr_AverageAnnualReturnInceptionDate

Mar. 01, 2010

^[1]

A Class

Risk/Return:

rr_RiskReturnAbstract

Maximum sales charge imposed on purchases (as a percentage of offering price)

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

5.75%

Maximum deferred sales charge load (as a percentage of the lower of original offering price or redemption proceeds)

rr_MaximumDeferredSalesChargeOverOther

none

Management fees

rr_ManagementFeesOverAssets

0.22%

Distribution and/or service (12b-1) fees

rr_DistributionAndService12b1FeesOverAssets

0.25%

Other expenses

rr_OtherExpensesOverAssets

0.66%

Acquired Fund Fees and Expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.01%

Total annual fund operating expenses

rr_ExpensesOverAssets

1.14%

^[2]

Fee Waiver or Reimbursement

rr_FeeWaiverOrReimbursementOverAssets

(0.03%)

Total annual fund operating expenses after expense reduction and reimbursement

rr_NetExpensesOverAssets

1.11%

^[3]

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

682

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

914

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

1,164

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

1,879

1 Year

rr_AverageAnnualReturnYear01

13.76%

^[1]

5 Years

rr_AverageAnnualReturnYear05

2.98%

^[1]

10 Years

rr_AverageAnnualReturnYear10

7.09%

^[1]

Inception Date

rr_AverageAnnualReturnInceptionDate

May 17, 2010

^[1]

C Class

Risk/Return:

rr_RiskReturnAbstract

Maximum sales charge imposed on purchases (as a percentage of offering price)

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

none

Maximum deferred sales charge load (as a percentage of the lower of original offering price or redemption proceeds)

rr_MaximumDeferredSalesChargeOverOther

1.00%

Management fees

rr_ManagementFeesOverAssets

0.22%

Distribution and/or service (12b-1) fees

rr_DistributionAndService12b1FeesOverAssets

1.00%

Other expenses

rr_OtherExpensesOverAssets

0.63%

Acquired Fund Fees and Expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.01%

Total annual fund operating expenses

rr_ExpensesOverAssets

1.86%

^[2]

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

298

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

585

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

1,006

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

2,181

Expense Example, No Redemption, 1 Year

rr_ExpenseExampleNoRedemptionYear01

189

Expense Example, No Redemption, 3 Years

rr_ExpenseExampleNoRedemptionYear03

585

Expense Example, No Redemption, 5 Years

rr_ExpenseExampleNoRedemptionYear05

1,006

Expense Example, No Redemption, 10 Years

rr_ExpenseExampleNoRedemptionYear10

$ 2,181

1 Year

rr_AverageAnnualReturnYear01

12.87%

^[1]

5 Years

rr_AverageAnnualReturnYear05

2.58%

^[1]

10 Years

rr_AverageAnnualReturnYear10

6.88%

^[1]

Inception Date

rr_AverageAnnualReturnInceptionDate

Sep. 01, 2010

^[1]

[1] 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.

[2] The Total Annual Fund Operating Expenses do not correlate to the ratio of expenses to average net assets provided in the Fund's Financial Highlights table, which reflects the operating expenses of the Fund and does not include Acquired Fund Fees and Expenses.

[3] The Manager has contractually agreed to reduce and/or reimburse the A Class of the Fund for Other Expenses, as applicable, through February 28, 2014 to the extent that Total Annual Fund Operating Expenses exceed 1.10% for the A 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.

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American Beacon Mid-Cap Value Fund | American Beacon Mid-Cap Value Fund

American Beacon Mid-Cap Value Fund

Investment Objective

The Fund’s investment objective is long-term capital appreciation and current income.

Fees and Expenses of the Fund

This table describes the fees and expenses that you may pay if you buy and hold shares of the Fund.

Shareholder Fees (fees paid directly from your investment)

Shareholder Fees	American Beacon Mid-Cap Value Fund AMR Class
Redemption fee (as a percentage of amount redeemed; applies to the proceeds of shares redeemed within 180 days of purchase)	2.00%

Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)

Annual Fund Operating Expenses		American Beacon Mid-Cap Value Fund AMR Class
Management fees		0.58%
Distribution and/or service (12b-1) fees		none
Other expenses		0.20%
Acquired Fund Fees and Expenses		0.01%
Total annual fund operating expenses	[1]	0.79%

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 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:

Expense Example (USD $)	1 year	3 years	5 years	10 years
American Beacon Mid-Cap Value Fund AMR Class	81	253	439	978

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 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 87% of the average value of its portfolio.

Principal Investment Strategies

Under normal circumstances, at least 80% of the Fund’s net assets (plus the amount of any borrowings for investment purposes) are invested in equity securities of middle market capitalization U.S. companies. These companies have market capitalizations within the market capitalization range of the companies in the Russell Midcap® Index at the time of investment. As of December 31, 2012 the market capitalizations of the companies in the Russell Midcap Index ranged from $313 million to $25 billion. 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 (“ADRs”) and U.S. dollar-denominated foreign stocks trading on U.S. exchanges (collectively referred to as “stocks”).

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 reducing volatility and downside risk.

In general, the sub-advisors select stocks that, in their opinion, have most or all of the following characteristics (relative to the Russell Midcap Index):

u above-average earnings growth potential,

u below-average price to earnings ratio,

u below-average price to book value ratio, and

u above-average dividend yields.

One sub-advisor invests in medium-sized companies with low price to earnings and price to book value ratios and high dividend yields in relation to the Russell Midcap Index. Through extensive research and meetings with company management teams, the sub-advisor seeks to identify companies that not only possess these three characteristics, but that also exhibit high or improving profitability translating into earnings growth above that of the overall Russell Midcap Index. The sub-advisor’s portfolio will generally consist of 35 to 45 stocks.

The second sub-advisor invests in medium-sized companies and intends to maintain a concentrated portfolio of 30 to 40 stocks selected from the most undervalued or “deep” value portion of its investment universe. That sub-advisor looks for companies within that universe that sell for a low price relative to normal earnings (with “normal earnings” defined as a 5 year estimate of what the company should earn in a normal environment based on research of the company’s history and the history of its industry).

The third sub-advisor utilizes a classic value-driven philosophy based on the belief that leading businesses selling at a discount to fair value have the potential to generate excess returns. The strategy focuses on stocks that are temporarily out of favor in the market; specifically, companies with higher returns on capital, free cash flow and strong balance sheets. These companies often dominate a particular industry niche, generally have significant barriers to entry and, as a result, are able to perpetuate a higher return on capital over time. 

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 security 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.

The Fund may invest cash balances in money market funds and may purchase and sell futures contracts to gain market exposure on cash balances or reduce market exposure in anticipation of liquidity needs.

Principal Risks

There is no assurance that the Fund will achieve its investment objective and you could lose part or all of your investment in the Fund. The Fund is not designed for investors who need an assured level of income and is intended to be a long-term investment. The Fund is not a complete investment program and may not be appropriate for all investors. Investors should carefully consider their own investment goals and risk tolerance before investing in the Fund. The principal risks of investing in the Fund are:

Equity Investments Risk

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, REITs, ADRs, and U.S. dollar denominated foreign stocks traded on U.S. exchanges. Such investments may expose the Fund to additional risks.

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 traded 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.

Foreign Exposure Risk

The Fund may invest in securities issued by foreign companies through ADRs and U.S. dollar-denominated foreign stocks trading on U.S. exchanges. ADRs 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.  Non-U.S. investments carry potential risks not associated with U.S. investments. Such risks include, but are not limited to: (1) currency exchange rate fluctuations, (2) political and financial instability, (3) less liquidity and greater volatility, (4) lack of uniform accounting, auditing and financial reporting standards, (5) increased price volatility, and (6) less government regulation and supervision of foreign stock exchanges, brokers and listed companies.

Futures Contracts Risk

Futures contracts are a type of derivative investment. A derivative refers to any financial instrument whose value is derived, at least in part, from the price of another security or a specified index, asset or rate. The use of derivatives presents risks different from, and possibly greater than, the risks associated with investing directly in traditional securities. Gains or losses in a derivative may be magnified and may be much greater than the derivatives original cost.

There may be an imperfect correlation between the changes in market value of the securities held by the Fund and the prices of futures contracts. There may not be a liquid secondary market for the futures contract. When the Fund purchases or sells a futures contract, it is subject to daily variation margin calls that could be substantial in the event of adverse price movements. If the Fund has insufficient cash to meet daily variation margin requirements, it might need to sell securities at a time when such sales are disadvantageous.

High Portfolio Turnover Risk

Portfolio turnover is a measure of a Fund’s trading activity over a one year period. A portfolio turnover rate of 100% would indicate that a Fund sold and replaced the entire value of its securities holdings during the period. High portfolio turnover could increase a Fund’s transaction costs and possibly have a negative impact on performance. Frequent trading by a Fund could also result in increased short term capital gain distributions to shareholders, which are taxable as ordinary income.

Investment Risk

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. Therefore, you may lose money by investing in the Fund.

Issuer Risk

The value of a security may decline for a number of reasons which directly relate to the issuer, such as management performance, financial leverage and reduced demand for the issuer’s goods or services, as well as the historical and prospective earnings of the issuer and the value of its assets.

Market Events Risk

Turbulence in financial markets and reduced liquidity in equity, credit and fixed-income markets may negatively affect many issuers worldwide which could adversely affect the Fund.

Market Risk

Market risks, including political, regulatory, market and economic developments, and developments that impact specific economic sectors, industries or segments of the market, can affect the value of the Fund’s shares.  The Fund’s equity investments are subject to stock market risk, which  involves the possibility that the value of the Fund’s investments in stocks will decline due to drops in the stock market. From time to time, certain investments 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 holdings to meet redemption requests or other cash needs, the Fund may have to sell them at a loss.

Mid-Capitalization Companies Risk

Investing in the securities of medium capitalization companies involves greater risk and the possibility of greater price volatility than investing in larger capitalization companies and more established companies, since medium sized companies may have limited operating history, product lines and financial resources, the securities of these companies may lack sufficient market liquidity and can be sensitive to expected changes in interest rates, borrowing costs and earnings.

Securities Selection Risk

Securities selected by the Manager or 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.

Value Stocks Risk

Value stocks are subject to the risk that their intrinsic value may never be realized by the market or that their prices may 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.

Fund Performance

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 Mid-Cap Value Funds Index, a composite of mutual funds comparable to the Fund. You may obtain updated performance information on the Fund’s website at www.americanbeaconfunds.com. Past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future.

Total Return for the Calendar Year Ended 12/31 of each Year

Highest Quarterly Return:	24.28%
(1/1/05 through 12/31/12)	(3rd Quarter 2009)
Lowest Quarterly Return:	-21.51%
(1/1/05 through 12/31/12)	(4th Quarter 2008)

Average Annual Total Returns For the periods ended December 31, 2012

Average Annual Returns American Beacon Mid-Cap Value Fund	1 Year	5 Years	Since Inception	Inception Date
AMR Class	16.27%	5.14%	6.96%	Jun. 30, 2004
Russell Midcap Value Index	(18.51%)	3.79%	7.54%
Lipper® Mid-Cap Value Funds Index	18.32%	2.98%	6.23%

[1] The Total Annual Fund Operating Expenses do not correlate to the ratio of expenses to average net assets provided in the Fund's Financial Highlights table, which reflects the operating expenses of the Fund and does not include Acquired Fund Fees and Expenses.

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American Beacon High Yield Bond Fund | American Beacon High Yield Bond Fund

American Beacon High Yield Bond Fund

Investment Objective

The Fund’s investment objective is high current income and capital appreciation.

Fees and Expenses of the Fund

This table describes the fees and expenses that you may pay if you buy and hold shares of the Fund. You may qualify for sales discounts if you and your eligible family members invest, or agree to invest in the future, at least $50,000 in 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 101 of the Prospectus and “Additional Purchase and Sale Information for A Class Shares” on page 78 of the statement of additional information.

Shareholder Fees (fees paid directly from your investment)

Shareholder Fees American Beacon High Yield Bond Fund	A Class	C Class	Y Class	Institutional Class	Investor Class
Maximum sales charge imposed on purchases (as a percentage of offering price)	4.75%	none	none	none	none
Maximum deferred sales charge load (as a percentage of the lower of original offering price or redemption proceeds)	none	1.00%	none	none	none
Redemption fee (as a percentage of amount redeemed; applies to the proceeds of shares redeemed within 90 days of purchase)	2.00%	2.00%	2.00%	2.00%	2.00%

Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)

Annual Fund Operating Expenses American Beacon High Yield Bond Fund		A Class	C Class	Y Class	Institutional Class	Investor Class
Management fees		0.43%	0.43%	0.43%	0.43%	0.43%
Distribution and/or service (12b-1) fees		0.25%	1.00%	none	none	none
Other expenses		0.78%	0.73%	0.70%	0.50%	0.73%
Acquired Fund Fees and Expenses		0.01%	0.01%	0.01%	0.01%	0.01%
Total annual fund operating expenses	[1]	1.47%	2.17%	1.14%	0.94%	1.17%
Expense Reduction and Reimbursement		0.34%	0.29%	0.15%		0.07%
Total annual fund operating expenses after expense reduction and reimbursement	[2]	1.13%	1.88%	0.99%		1.10%

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 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:

Expense Example American Beacon High Yield Bond Fund (USD $)	1 year	3 years	5 years	10 years
A Class	585	886	1,209	2,121
C Class	291	651	1,138	2,481
Y Class	101	348	613	1,374
Institutional Class	96	300	520	1,155
Investor Class	112	365	638	1,415

Assuming no redemption of shares:

Expense Example No Redemption (USD $)	1 year	3 years	5 years	10 years
American Beacon High Yield Bond Fund C Class	191	651	1,138	2,481

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 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 100% of the average value of its portfolio.

Principal Investment Strategies

This Fund seeks to maximize current income by investing in a diversified portfolio of public and private issue debt securities that are generally rated below investment grade (such as BB or lower by Standard & Poor’s Ratings Services or Fitch, Inc. and/or Ba or lower by Moody’s Investors Service, Inc.) or deemed to be below investment grade by an investment sub-advisor. These types of securities are commonly referred to as “high-yield bonds” or “junk bonds.” The Fund seeks capital appreciation by investing in issues whose relative value is expected to increase over time. The Fund has no limitations regarding the maturities of the debt securities it can buy or the market capitalization of the issuers of those securities.

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 reducing volatility and downside risk.

The Fund seeks its investment objective by investing, under normal circumstances, at least 80% of its net assets (plus the amount of any borrowings for investment purposes) in a diversified portfolio of domestic and foreign high-yield bonds. High-yield issuers are generally those which have below investment grade ratings because they are relatively small in size, relatively young in years, relatively leveraged financially (perhaps borrowing heavily to finance expansion or due to a leveraged buyout), or formerly “blue chip” companies that have encountered some financial difficulties.

In selecting investments, the Fund’s sub-advisors utilize a bottom-up and research-driven investment process that relies heavily on internal research and fundamental credit analysis. The investment philosophy of each sub-advisor concentrates on identification of relative value and downside protection.

To a lesser extent, the Fund may invest in other securities, including investment grade securities, foreign securities, common and preferred stocks and convertible securities, in keeping with the Fund’s overall investment objective.

The Fund may also invest cash balances in other investment companies to gain market exposure on cash balances or reduce market exposure in anticipation of liquidity needs.

Principal Risks

There is no assurance that the Fund will achieve its investment objective and you could lose part or all of your investment in the Fund. The Fund is designed primarily for investors seeking current income from a fund that invests mainly in a variety of high-yield, high-risk debt securities. Those investors should be willing to assume the credit risks of a fund that typically invests a significant amount of its assets in below investment-grade debt securities and the price changes in those securities that can occur when interest rates change. The Fund is not designed for investors who need an assured level of current income and is intended to be a long-term investment. The Fund is not a complete investment program and may not be appropriate for all investors. Investors should carefully consider their own investment goals and risk tolerance before investing in the Fund. The principal risks of investing in the Fund are:

Credit Risk

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’s credit rating can cause the price of its bonds to go down. Since the Fund invests in lower-quality debt securities considered speculative in nature, this risk will be substantial.

Equity Investments Risk

Equity securities generally are subject to market risk. The Fund’s investments in equity securities may include common and preferred stocks and convertible securities. Such investments may expose the Fund to additional risks.

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 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.

Foreign Investing Risk

Non-U.S. investments carry potential risks not associated with U.S. investments. Such risks include, but are not limited to: (1) currency exchange rate fluctuations, (2) political and financial instability, (3) less liquidity and greater volatility, (4) lack of uniform accounting, auditing and financial reporting standards, (5) increased price volatility, (6) less government regulation and supervision of foreign stock exchanges, brokers and listed companies, and (7) delays in transaction settlement in some foreign markets.

High Portfolio Turnover Risk

Portfolio turnover is a measure of a Fund’s trading activity over a one-year period. A portfolio turnover rate of 100% would indicate that a Fund sold and replaced the entire value of its securities holdings during the period. High portfolio turnover could increase a Fund’s transaction costs and possibly have a negative impact on performance. Frequent trading by a Fund could also result in increased short-term capital gain distributions to shareholders, which are taxable as ordinary income.

High-Yield Securities Risk

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’s ability to repay principal and interest obligations. Issuers of lower-rated securities also have a greater risk of default or bankruptcy.

Interest Rate Risk

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.

Investment Risk

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. Therefore, you may lose money by investing in the Fund.

Issuer Risk

The value of a security may decline for a number of reasons which directly relate to the issuer, such as management performance, financial leverage and reduced demand for the issuer’s goods or services, as well as the historical and prospective earnings of the issuer and the value of its assets.

Market Events Risk

Turbulence in financial markets and reduced liquidity in equity, credit and fixed-income markets may negatively affect many issuers worldwide which could adversely affect the Fund.

Market Risk

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’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’s investments to decline, regardless of the financial conditions of the issuers held by the Fund. From time to time, certain investments 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 holdings to meet redemption requests, the Fund may have to sell them at a loss.

Market Timing Risk

Because the Fund invests in high yield bonds that may lack market liquidity, it is subject to the risk of market timing activities.  The limited trading activity of some high yield bonds may result in market prices that do not reflect the true market value of these illiquid securities. However, some investors may engage in frequent short-term trading in the Fund to take advantage of any price differentials that may be reflected in the net asset value of the Fund’s shares. There is no assurance that fair valuation of securities can reduce or eliminate market timing. While the Manager monitors trading in Fund shares, there is no guarantee that it can detect all market timing activities.

Securities Selection Risk

Securities selected by the Manager or 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.

Small and Medium Capitalization Companies Risk

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.

Unrated Securities Risk

Some unrated securities may not have an active trading market or may be difficult to value, which means the Fund might have difficulty selling them promptly at an acceptable price.

Fund Performance

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® High Current Yield Bond Funds Index, a composite of mutual funds comparable to the Fund.

The chart and the table below show the performance of the Fund’s Institutional Class shares for all periods. The Fund began operations of Investor Class shares on March 1, 2002, 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 Institutional Class is shown for Y Class shares for all periods up to the inception of Y Class and for Investor Class shares before March 1, 2002. The performance of the Institutional Class is shown for the A Class and C Class shares from January 1, 2002 through March 1, 2002, and the performance of the Investor Class is shown from March 1, 2002 up to the inception of the A Class and C Class shares. 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 new 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.

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.

Total Return for the Calendar Year Ended 12/31 of each Year

Calendar year total returns for Institutional Class shares

Highest Quarterly Return:	19.31%
(1/1/03 through 12/31/12)	(2nd Quarter 2009)
Lowest Quarterly Return:	-18.52%
(1/1/03 through 12/31/12)	(4th Quarter 2008)

Average Annual Total Returns For the periods ended December 31, 2012

Average Annual Returns American Beacon High Yield Bond Fund		1 Year	5 Years	10 Years	Inception Date
Institutional Class	[1]	15.34%	7.70%	8.03%	Dec. 29, 2000
A Class	[1]	14.98%	7.46%	7.76%	May 17, 2010
C Class	[1]	14.15%	7.04%	7.55%	Sep. 01, 2010
Y Class	[1]	15.01%	7.55%	7.96%	Mar. 01, 2010
Investor Class	[1]	14.94%	7.42%	7.74%	Mar. 01, 2002
After Taxes on Distributions Institutional Class	[1]	12.40%	4.46%	4.93%
After Taxes on Distributions and Sales Institutional Class	[1]	9.86%	4.56%	5.01%
JPMorgan Global High-Yield Index	[1]	16.21%	10.45%	10.70%
Lipper High Current Yield Bond Funds Index	[1]	15.40%	7.73%	8.89%

[1] The Total Annual Fund Operating Expenses do not correlate to the ratio of expenses to average net assets provided in the Fund's Financial Highlights table, which reflects the operating expenses of the Fund and does not include Acquired Fund Fees and Expenses.

[2] The Manager has contractually agreed to reduce and/or reimburse the A Class, C Class ,Y Class and Investor Class of the Fund for Other Expenses, as applicable, through February 28, 2014 to the extent that Total Annual Fund Operating Expenses exceed 1.12% for the A Class, 1.87% for the C Class, 0.98% of the Y Class and 1.09% for the Investor 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.

[1] 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.

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American Beacon International Equity Fund | American Beacon International Equity Fund

American Beacon International Equity Fund

Investment Objective

The Fund’s investment objective is long-term capital appreciation.

Fees and Expenses of the Fund

This table describes the fees and expenses that you may pay if you buy and hold shares of the Fund. You may qualify for sales discounts if you and your eligible family members invest, or agree to invest in the future, at least $50,000 in 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 101 of the Prospectus and “Additional Purchase and Sale Information for A Class Shares” on page 78 of the statement of additional information.

Shareholder Fees (fees paid directly from your investment)

Shareholder Fees American Beacon International Equity Fund	A Class	C Class	Y Class	Advisor Class	Institutional Class	Investor Class	Retirement Class
Maximum sales charge imposed on purchases (as a percentage of offering price)	5.75%	none	none	none	none	none	none
Maximum deferred sales charge load (as a percentage of the lower of original offering price or redemption proceeds)	none	1.00%	none	none	none	none	none

Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)

Annual Fund Operating Expenses American Beacon International Equity Fund		A Class	C Class	Y Class	Advisor Class	Institutional Class	Investor Class	Retirement Class
Management fees		0.32%	0.32%	0.32%	0.32%	0.32%	0.32%	0.32%
Distribution and/or service (12b-1) fees		0.25%	1.00%	none	0.25%	none	none	0.50%
Other expenses		0.72%	0.80%	0.48%	0.74%	0.40%	0.77%	5.58%
Acquired Fund Fees and Expenses		0.01%	0.01%	0.01%	0.01%	0.01%	0.01%	0.01%
Total annual fund operating expenses	[1]	1.30%	2.13%	0.81%	1.32%	0.73%	1.10%	6.41%
Expense Reduction and Reimbursement		0.04%	0.13%		0.07%			4.93%
Total annual fund operating expenses after expense reduction and reimbursement	[2]	1.26%	2.00%		1.25%			1.48%

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 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:

Expense Example American Beacon International Equity Fund (USD $)	1 year	3 years	5 years	10 years
A Class	696	959	1,242	2,048
C Class	303	655	1,133	2,452
Y Class	83	259	450	1,003
Advisor Class	127	411	716	1,583
Institutional Class	75	234	407	908
Investor Class	112	350	607	1,341
Retirement Class	151	1,460	2,731	5,758

Assuming no redemption of shares:

Expense Example No Redemption (USD $)	1 year	3 years	5 years	10 years
American Beacon International Equity Fund C Class	203	655	1,133	2,452

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 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 60% of the average value of its portfolio.

Principal Investment Strategies

Under normal circumstances, at least 80% of the Fund’s net assets (plus the amount of any borrowings for investment purposes) are invested in common stocks and securities convertible into common stocks (collectively, “stocks”) of issuers based in at least three different countries located outside the United States. The Fund will primarily invest in countries comprising the Morgan Stanley Capital International® Europe Australasia Far East Index (“MSCI EAFE Index”). The MSCI EAFE Index is comprised of equity securities of companies from various industrial sectors whose primary trading markets are located outside the United States. Companies included in the MSCI EAFE Index are selected from among the larger capitalization companies in these markets. The Fund may invest in companies of all market capitalizations. The Fund may use futures contracts and foreign currency forward contracts, including non-deliverable forwards ("NDFs") contracts, as a hedge against foreign currency fluctuations.

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 reducing volatility and downside risk.

The sub-advisors select stocks that, in their opinion, have most or all of the following characteristics (relative to that stock’s country, sector or industry):

u above-average return on equity or earnings growth potential,

u below-average price to earnings or price to cash flow ratio,

u below-average price to book value ratio, and

u above-average dividend yields.

The sub-advisors may consider potential changes in currency exchange rates when choosing stocks. Each of the 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. A sub-advisor may trade forward foreign currency contracts, including NDF contracts, or currency futures in an attempt to reduce the Fund’s risk exposure to adverse fluctuations in currency exchange rates.

The Fund may invest cash balances in money market funds and may purchase and sell futures contracts to gain market exposure on cash balances or reduce market exposure in anticipation of liquidity needs.

The Fund may lend its securities to broker-dealers and other institutions to earn additional income.

Principal Risks

There is no assurance that the Fund will achieve its investment objective and you could lose part or all of your investment in the Fund. The Fund is not designed for investors who need an assured level of income and is intended to be a long-term investment. The Fund is not a complete investment program and may not be appropriate for all investors. Investors should carefully consider their own investment goals and risk tolerance before investing in the Fund. The principal risks of investing in the Fund are:

Currency Risk

Foreign currencies may decline in value relative to the U.S. dollar and affect the Fund’s investments in foreign (non-U.S.) currencies or in securities that trade in, and receive revenues in, or in derivatives that provide exposure to, foreign (non-U.S.) currencies.

Equity Investments Risk

Equity securities generally are subject to market risk. The Fund’s investments in equity securities may include common stocks and securities convertible into or exchangeable for common stocks. Investing in such securities may expose the Fund to additional risk.

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 movement in interest rates.  In addition, convertible securities are subject to risk that the credit standing of the issuer may have an effect on the security’s investment value.

Foreign Investing Risk

Non-U.S. investments carry potential risks not associated with U.S. investments. Such risks include, but are not limited to: (1) currency exchange rate fluctuations, (2) political and financial instability, (3) less liquidity and greater volatility, (4) lack of uniform accounting, auditing and financial reporting standards, (5) increased price volatility; (6) less government regulation and supervision of foreign stock exchanges, brokers and listed companies; and (7) delays in transaction settlement in some foreign markets.

Futures Contracts and Foreign Currency Forward Contracts Risk

Futures contracts and foreign currency forward contracts, including NDFs, are derivative instruments pursuant to a contract with a counterparty to pay a fixed price for an agreed amount of securities or other underlying assets at an agreed date or to buy or sell a specific currency at a future date at a price set at the time of the contract. The use of such derivative instruments may expose the Fund to additional risks that it would not be subject to if they invested directly in the securities underlying those derivatives. Futures contracts may experience potentially dramatic price changes (losses) and imperfect correlations between the price of the contract and the underlying security, index or currency which will increase the volatility of the Fund and may involve a small investment of cash relative to the magnitude of the risk assumed. There can be no assurance that any strategy used will succeed. Not all forward contracts, including NDFs, require a counterparty to post collateral, which may expose the Fund to greater losses in the event of a default by a counterparty.

Hedging Risk

Gains or losses from positions in hedging instruments may be much greater than the instrument’s original cost. The counterparty may be unable to honor its financial obligation to a Fund. In addition, the Manager or a sub-advisor may be unable to close the transaction at the time it would like or at the price it believes the security is currently worth.

Investment Risk

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. Therefore, you may lose money by investing in the Fund.

Issuer Risk

The value of a security may decline for a number of reasons which directly relate to the issuer, such as management performance, financial leverage and reduced demand for the issuer’s goods or services, as well as the historical and prospective earnings of the issuer and the value of its assets.

Large Capitalization Companies Risk

The securities of large market capitalization companies may underperform other segments of the market because such companies may be less responsive to competitive challenges and opportunities and may be unable to attain high growth rates during periods of economic expansion.

Market Events Risk

Turbulence in financial markets and reduced liquidity in equity, credit and fixed-income markets may negatively affect many issuers worldwide which could adversely affect the Fund.

Market Risk

Market risks, including political, regulatory, market and economic developments, and developments that impact specific economic sectors, industries or segments of the market, can affect the value of a Fund’s shares. Equity investments are subject to stock market risk, which involves the possibility that the value of the Fund’s investments in stocks of a particular country will decline due to drops in the stock market due to general market, regulatory, political and economic conditions.  From time to time, certain investments 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 holdings to meet redemption requests or other cash needs, the Fund may have to sell them at a loss.

Market Timing Risk

Because the Fund invests in foreign securities, it is particularly subject to the risk of market timing activities. The Fund generally prices foreign securities using their closing prices from the foreign markets in which they trade, typically prior to the Fund’s determination of its net asset value. These prices may be affected by events that occur after the close of a foreign market but before the Fund prices its shares. In such instances, the Fund may fair value foreign securities. However, some investors may engage in frequent short-term trading in the Fund to take advantage of any price differentials that may be reflected in the net asset value of the Fund’s shares. There is no assurance that fair valuation of securities can reduce or eliminate market timing. While the Manager monitors trading in Fund shares, there is no guarantee that it can detect all market timing activities.

Securities Lending Risk

To the extent the Fund lends its securities, it may be subject to the following risks. Borrowers of the Fund’s securities typically provide collateral in the form of cash that is reinvested in securities. The securities in which the collateral is invested may not perform sufficiently to cover the return collateral payments owed to borrowers. In addition, delays may occur in the recovery of securities from borrowers, which could interfere with the Fund’s ability to vote proxies or to settle transactions.

Securities Selection Risk

Securities selected by the Manager or 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.

Value Stocks Risk

Value stocks are subject to the risk that their intrinsic value may never be realized by the market or that their prices may 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.

Fund Performance

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® International Funds Index, a composite of mutual funds comparable to the Fund.

The chart and the table below show the performance of the Fund’s Institutional Class shares for all periods. The Fund began operations of Advisor Class shares on May 1, 2003, 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 Investor Class is shown for the Advisor Class, A Class and C Class shares and the performance of the Institutional Class is shown for Y Class shares prior to the dates that such newer share classes were first offered. For Retirement Class shares, performance results before May 1, 2003 are for Investor Class shares and performance results from May 1, 2003 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.

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.

Total Return for the Calendar Year Ended 12/31 of each Year

Calendar year total returns for Institutional Class shares

Highest Quarterly Return:	25.00%
(1/1/03 through 12/31/12)	(2nd Quarter 2009)
Lowest Quarterly Return:	-21.68%
(1/1/03 through 12/31/12)	(3rd Quarter 2011)

Average Annual Total Returns For the periods ended December 31, 2012

Average Annual Returns American Beacon International Equity Fund		1 Year	5 Years	10 Years	Inception Date
Institutional Class	[1]	21.51%	(2.41%)	9.13%	Aug. 07, 1991
A Class	[1]	20.88%	(2.81%)	8.80%	May 17, 2010
C Class	[1]	20.05%	(3.16%)	8.60%	Sep. 01, 2010
Y Class	[1]	21.47%	(2.45%)	9.11%	Aug. 03, 2009
Advisor Class	[1]	20.90%	(2.97%)	8.57%	May 01, 2003
Investor Class	[1]	21.16%	(2.72%)	8.65%	Aug. 01, 1994
Retirement Class	[1]	20.76%	(3.04%)	8.53%	May 01, 2009
After Taxes on Distributions Institutional Class	[1]	20.48%	(2.75%)	8.39%
After Taxes on Distributions and Sales Institutional Class	[1]	13.98%	(1.93%)	8.17%
MCSI EAFE Index	[1]	17.32%	(3.69%)	8.21%
Lipper International Funds Index	[1]	19.70%	(2.81%)	8.81%

[1] The Total Annual Fund Operating Expenses do not correlate to the ratio of expenses to average net assets provided in the Fund's Financial Highlights table, which reflects the operating expenses of the Fund and does not include Acquired Fund Fees and Expenses.

[2] The Manager has contractually agreed to reduce and/or reimburse the A Class, C Class Advisor Class and Retirement Class of the Fund for Other Expenses, as applicable, through February 28, 2014 to the extent that Total Annual Fund Operating Expenses exceed 1.25% for the A Class, 1.99% for the C Class, 1.24% for the Advisor Class and 1.47% for the Retirement 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.

[1] 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.

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American Beacon Intermediate Bond Fund | American Beacon Intermediate Bond Fund

American Beacon Intermediate Bond Fund

Investment Objective

The Fund’s investment objective is income and capital appreciation.

Fees and Expenses of the Fund

This table describes the fees and expenses that you may pay if you buy and hold shares of the Fund. You may qualify for sales discounts if you and your eligible family members invest, or agree to invest in the future, at least $50,000 in 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 101 of the Prospectus and “Additional Purchase and Sale Information for A Class Shares” on page 78 of the statement of additional information.

Shareholder Fees (fees paid directly from your investment)

Shareholder Fees American Beacon Intermediate Bond Fund	A Class	C Class	Y Class	Institutional Class	Investor Class
Maximum sales charge imposed on purchases (as a percentage of offering price)	4.75%	none	none	none	none
Maximum deferred sales charge load (as a percentage of the lower of original offering price or redemption proceeds)	none	1.00%	none	none	none

Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)

Annual Fund Operating Expenses American Beacon Intermediate Bond Fund		A Class	C Class	Y Class	Institutional Class	Investor Class
Management fees		0.20%	0.20%	0.20%	0.20%	0.20%
Distribution and/or service (12b-1) fees		0.25%	1.00%	none	none	none
Other expenses		0.67%	0.67%	0.79%	0.13%	0.64%
Acquired Fund Fees and Expenses		0.01%	0.01%	0.01%	0.01%	0.01%
Total annual fund operating expenses	[1]	1.13%	1.88%	1.00%	0.34%	0.85%
Expense Reduction and Reimbursement		0.13%	0.13%	0.34%		0.05%
Total annual fund operating expenses after expense reduction and reimbursement	[2]	1.00%	1.75%	0.66%		0.80%

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 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:

Expense Example American Beacon Intermediate Bond Fund (USD $)	1 year	3 years	5 years	10 years
A Class	572	805	1,056	1,774
C Class	278	578	1,004	2,190
Y Class	67	284	519	1,194
Institutional Class	35	109	191	431
Investor Class	82	266	466	1,043

Assuming no redemption of shares:

Expense Example No Redemption (USD $)	1 year	3 years	5 years	10 years
American Beacon Intermediate Bond Fund C Class	178	578	1,004	2,190

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 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 144% of the average value of its portfolio.

Principal Investment Strategies

Under normal circumstances, the Fund invests at least 80% of its net assets (plus the amount of any borrowings for investment purposes) in obligations of the U.S. Government, its agencies and instrumentalities, including U.S. 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, Yankeedollar and Eurodollar bank certificates of deposit, time deposits, bankers' acceptances and other notes. These types of obligations are commonly referred to as fixed-income securities or bonds. The Fund seeks capital appreciation by investing in corporate issues whose relative value is expected to increase over time.

The Manager currently allocates the Fund’s assets between itself and a sub-advisor. The Manager believes that this strategy may help the Fund outperform other investment styles over the longer term while reducing volatility and downside risk.

In determining which securities to buy and sell, the Manager employs a top-down fixed-income investment strategy, as follows:

u Develop an overall investment strategy, including a portfolio duration target, by examining the current trends in the U.S. economy.

u 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.

u Determine the weightings of each security type by analyzing the difference in yield spreads between corporate and U.S. Government securities.

u Select specific debt securities within each security type.

u Review and monitor portfolio composition for changes in credit, risk-return profile and comparisons with benchmarks.

The sub-advisor uses a bottom-up fixed-income investment strategy in determining which securities to buy and sell, as follows:

u Search for eligible securities with a yield to maturity advantage versus a U.S. Government security with a similar maturity.

u Evaluate credit quality of the securities.

u Perform an analysis of the expected total return of the securities to changes in interest rates compared to the Barclays Capital U.S. Aggregate Bond Index.

The Fund will only buy debt securities that are determined by the Manager or sub-advisor to be investment grade at the time of purchase. If an investment held by the Fund is downgraded below investment grade, the Manager or sub-advisor will take action that they believe to be advantageous to the Fund. Under normal circumstances, the Fund seeks to maintain a duration of three to seven years. A duration of “one year” means that a security’s price would be expected to decrease by approximately 1% with a 1% increase in interest rates.

The Fund may also invest cash balances in other investment companies to gain market exposure on cash balances or reduce market exposure in anticipation of liquidity needs.

Principal Risks

There is no assurance that the Fund will achieve its investment objective and you could lose part or all of your investment in the Fund. The Fund is not 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:

Credit Risk

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’s credit rating can cause the price of its bonds to go down.

Foreign Exposure Risk

The Fund may invest in U.S. dollar-denominated bonds issued by foreign companies or foreign governments. Investing in foreign companies carries potential risks not associated with domestic investments. Such risks include, but are not limited to: (1) currency exchange rate fluctuations, (2) political and financial instability, (3) less liquidity and greater volatility, (4) lack of uniform accounting, auditing and financial reporting standards; (5) increased price volatility; and (6) less government regulation and supervision of foreign stock exchanges, brokers and listed companies.

Government-Sponsored Enterprises Risk

Securities held by the Fund that are issued by government-sponsored enterprises, such as the Federal National Mortgage Association (“Fannie Mae”), the Federal Home Loan Mortgage Corporation (“Freddie Mac”), 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.

High Portfolio Turnover Risk

Portfolio turnover is a measure of a Fund’s trading activity over a one-year period. A portfolio turnover rate of 100% would indicate that a Fund sold and replaced the entire value of its securities holdings during the period. High portfolio turnover could increase a Fund’s transaction costs and possibly have a negative impact on performance. Frequent trading by a Fund could also result in increased short-term capital gain distributions to shareholders, which are taxable as ordinary income.

Interest Rate Risk

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.

Investment Risk

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. Therefore, you may lose money by investing in the Fund.

Issuer Risk

The value of a security may decline for a number of reasons which directly relate to the issuer, such as management performance, financial leverage and reduced demand for the issuer’s goods or services, as well as the historical and prospective earnings of the issuer and the value of its assets.

Market Events Risk

Turbulence in financial markets and reduced liquidity in credit and fixed-income markets may negatively affect many issuers worldwide which could adversely affect the Fund.

Market Risk

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’s investments will decline due to drops in the overall bond market. Changes in the economic climate, investor perceptions, and stock market volatility can cause the prices of the Fund’s investments to decline, regardless of the financial conditions of the issuers held by the Fund. From time to time, certain investments 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 holdings to meet redemption requests or other cash needs, the Fund may have to sell them at a loss.

Other Investment Companies Risk

The Fund may invest in shares of other registered investment companies, including open-end funds, and money market funds. To the extent that the Fund invests in shares of other registered investment companies, you will indirectly bear fees and expenses charged by the underlying funds in addition to the Fund’s direct fees and expenses and will be subject to the risks associated with investments in those funds.

Prepayment and Extension Risk

The Fund’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’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’s effective maturity and a decline in its price.

Securities Selection Risk

Securities selected by the Manager or 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.

U.S. Government Securities Risk

A security backed by the U.S. Treasury or the full faith and credit of the United States is guaranteed only as to the timely payment of interest and principal when held to maturity. The market prices for such securities are not guaranteed and will fluctuate. They are also subject to credit risk and interest rate risk.

Fund Performance

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 Intermediate Investment Grade Index, a composite of mutual funds comparable to the Fund. Performance shown in the chart and tables below reflects the Fund’s one-time receipt in December 2006 of class action settlement proceeds that were related to investment activity in 2002. The Fund’s performance for all periods that include December 2006 was significantly higher than it would have been absent receipt of the settlement proceeds.

The chart and the table below show the performance of the Fund’s Institutional Class shares for all periods. The Fund began operations of Investor Class shares on March 1, 2009, 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 Institutional Class is shown for Y Class shares, Investor Class shares, A Class shares and C Class shares before March 1, 2009. The performance of the Investor Class shares is shown for the A Class and C Class shares from March 2, 2009 to the inception of both the A Class and C 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 share classes had lower expenses, their performance was better than the newer share 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.

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.

Total Return for the Calendar Year Ended 12/31 of each Year

Calendar year total returns for Institutional Class shares

Highest Quarterly Return:	4.91%
(1/1/03 through 12/31/12)	(4th Quarter 2008)
Lowest Quarterly Return:	-2.75%
(1/1/03 through 12/31/12)	(2nd Quarter 2004)

Average Annual Total Returns For the periods ended December 31, 2012

Average Annual Returns American Beacon Intermediate Bond Fund		1 Year	5 Years	10 Years	Inception Date
Institutional Class	[1]	4.98%	6.03%	5.24%	Sep. 15, 1997
A Class	[1]	4.30%	5.54%	5.00%	May 17, 2010
C Class	[1]	3.52%	5.18%	4.82%	Sep. 01, 2010
Investor Class	[1]	4.50%	5.64%	5.04%	Mar. 02, 2009
Y Class	[1]	4.65%	5.94%	5.19%	Mar. 01, 2010
After Taxes on Distributions Institutional Class	[1]	3.73%	4.25%	3.66%
After Taxes on Distributions and Sales Institutional Class	[1]	3.35%	4.30%	3.56%
Barclays Capital U.S. Aggregate Bond Index	[1]	4.21%	5.95%	5.18%
Lipper Intermediate Investment Grade Index	[1]	7.82%	6.28%	5.31%

[1] The Total Annual Fund Operating Expenses do not correlate to the ratio of expenses to average net assets provided in the Fund's Financial Highlights table, which reflects the operating expenses of the Fund and does not include Acquired Fund Fees and Expenses.

[2] The Manager has contractually agreed to reduce and/or reimburse the A Class, C Class, Y Class and Investor Class of the Fund for Other Expenses through February 28, 2014 to the extent that Total Annual Fund Operating Expenses exceed 0.99% for the A Class, 1.74% for the C Class, 0.65% for the Y Class and 0.79% for the Investor Class(excluding taxes, brokerage commissions, acquired fund fees and expenses and other extraordinary expenses such as litigation). The contractual expense reimbursement 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 Managers (a) occurs within three years after the Manager's own reduction or reimbursement and (b) does not cause the Total Annual Fund Operating Expenses to exceed the percentage limit contractually agreed.

[1] 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.

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American Beacon Balanced Fund | American Beacon Balanced Fund

American Beacon Balanced Fund

Investment Objective

The Fund’s investment objective is income and capital appreciation.

Fees and Expenses of the Fund

This table describes the fees and expenses that you may pay if you buy and hold shares of the Fund. You may qualify for sales discounts if you and your eligible family members invest, or agree to invest in the future, at least $50,000 in 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 101 of the Prospectus and “Additional Purchase and Sale Information for A Class Shares” on page 78 of the statement of additional information.

Shareholder Fees (fees paid directly from your investment)

Shareholder Fees American Beacon Balanced Fund	A Class	C Class	Y Class	Advisor Class	Institutional Class	Investor Class
Maximum sales charge imposed on purchases (as a percentage of offering price)	5.75%	none	none	none	none	none
Maximum deferred sales charge load (as a percentage of the lower of original offering price or redemption proceeds)	none	1.00%	none	none	none	none

Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)

Annual Fund Operating Expenses American Beacon Balanced Fund		A Class	C Class	Y Class	Advisor Class	Institutional Class	Investor Class
Management fees		0.22%	0.22%	0.22%	0.22%	0.22%	0.22%
Distribution and/or service (12b-1) fees		0.25%	1.00%	none	0.25%	none	none
Other expenses		0.66%	0.63%	0.48%	0.62%	0.37%	0.70%
Acquired Fund Fees and Expenses		0.01%	0.01%	0.01%	0.01%	0.01%	0.01%
Total annual fund operating expenses	[1]	1.14%	1.86%	0.71%	1.10%	0.60%	0.93%
Expense Reduction and Reimbursement		0.03%
Total annual fund operating expenses after expense reduction and reimbursement	[2]	1.11%

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 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:

Expense Example American Beacon Balanced Fund (USD $)	1 year	3 years	5 years	10 years
A Class	682	914	1,164	1,879
C Class	298	585	1,006	2,181
Y Class	73	228	396	882
Advisor Class	112	350	607	1,341
Institutional Class	61	192	335	750
Investor Class	95	297	515	1,144

Assuming no redemption of shares:

Expense Example No Redemption (USD $)	1 year	3 years	5 years	10 years
American Beacon Balanced Fund C Class	189	585	1,006	2,181

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 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 58% of the average value of its portfolio.

Principal Investment Strategies

Under normal circumstances, between 50% and 70% of the Fund’s total assets are invested in equity securities and between 30% and 50% of the Fund’s total assets are invested in debt securities.

The Fund’s equity investments may include common stocks, preferred stocks, securities convertible into common stocks, real estate investment trusts (“REITs”), American Depositary Receipts (“ADRs”) and U.S. dollar-denominated foreign stocks traded on U.S. exchanges (collectively referred to as “stocks”). The Fund may invest in companies of all market capitalizations.

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 reducing volatility and downside risk.

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):

u above-average earnings growth potential,

u below-average price to earnings ratio,

u below-average price to book value ratio, and

u above-average dividend yields.

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.

The Fund’s debt securities may include: obligations of the U.S. Government, its agencies and instrumentalities, including U.S. Government-sponsored enterprises (some of which are not backed by the full faith and credit of the U.S. Government); U.S. and U.S. dollar-denominated foreign corporate debt securities, such as notes and bonds, mortgage-backed securities; asset-backed securities; master-demand notes and other debt securities. The Fund will only buy debt securities that are deemed by the Manager or sub-advisors, as applicable, to be investment grade at the time of the purchase. If an investment held by the Fund is downgraded below investment grade, the Manager or sub-advisors, as applicable will take action that they believe to be advantageous to the Fund. The Fund has no limitations regarding the maturities of the debt securities it can buy.

In determining which debt securities to buy and sell, the Manager and the sub-advisors generally use a “top-down” or “bottom-up” investment strategy, or a combination of both strategies. The top-down fixed-income investment strategy is implemented as follows:

● Develop an overall investment strategy, including a portfolio duration target, by examining the current trends in the U.S. economy.

● 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.

● Determine the weightings of each security type by analyzing the difference in yield spreads between corporate and U.S. Government securities.

● Select specific debt securities within each security type.

● Review and monitor portfolio composition for changes in credit, risk-return profile and comparisons with benchmarks.

The bottom-up fixed-income investment strategy is implemented as follows:

● Search for eligible securities with a yield to maturity advantage versus a U.S. Government security with a similar maturity.

● Evaluate credit quality of the securities.

● Perform an analysis of the expected price volatility of the securities to changes in interest rates by examining actual price volatility between U.S. Government and non-U.S. Government securities.

The Fund may invest cash balances in other investment companies and may purchase and sell futures contracts to gain market exposure on cash balances or reduce market exposure in anticipation of liquidity needs.

Principal Risks

There is no assurance that the Fund will achieve its investment objective and you could lose part or all of your investment in the Fund. The Fund is not designed for investors who need an assured level of income and is intended to be a long-term investment. The Fund is not a complete investment program and may not be appropriate for all investors. Investors should carefully consider their own investment goals and risk tolerance before investing in the Fund. The principal risks of investing in the Fund are:

Credit Risk

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’s credit rating can cause the price of its bonds to go down.

Equity Investments Risk

Equity securities generally are subject to market risk. The Fund’s investments in equity securities may include U.S. and non-U.S. common stocks, preferred stocks, securities convertible into or exchangeable for common stocks, REITs, ADRs, and U.S. dollar-denominated foreign stocks trading on U.S. exchanges. Such investments may expose the Fund to additional risks.

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 traded 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.

Foreign Exposure Risk

The Fund may invest in securities issued by foreign companies through ADRs and U.S. dollar-denominated foreign stocks trading on U.S. exchanges. ADRs 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. The Fund may also invest in U.S. dollar-denominated bonds issued by foreign companies or foreign governments. Non-U.S. investments carry potential risks not associated with U.S. investments. Such risks include, but are not limited to: (1) currency exchange rate fluctuations, (2) political and financial instability, (3) less liquidity and greater volatility, (4) lack of uniform accounting, auditing and financial reporting standards, (5) increased price volatility, and (6) less government regulation and supervision of foreign stock exchanges, brokers and listed companies.

Futures Contracts Risk

Futures contracts are a type of derivative investment. A derivative refers to any financial instrument whose value is derived, at least in part, from the price of another security or a specified index, asset or rate. The use of derivatives presents risks different from, and possibly greater than, the risks associated with investing directly in traditional securities. Gains or losses in a derivative may be magnified and may be much greater than the derivatives original cost.

There may be an imperfect correlation between the changes in market value of the securities or other underlying assets held by the Fund and the prices of futures contracts. There may not be a liquid secondary market for the futures contract. When the Fund purchases or sells a futures contract, it is subject to daily variation margin calls that could be substantial in the event of adverse price movements. If the Fund has insufficient cash to meet daily variation margin requirements, it might need to sell securities at a time when such sales are disadvantageous.

Government-Sponsored Enterprises Risk

Securities held by the Fund that are issued by government-sponsored enterprises, such as the Federal National Mortgage Association (“Fannie Mae”), the Federal Home Loan Mortgage Corporation (“Freddie Mac”), 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.

Interest Rate Risk

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.

Investment Risk

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. Therefore, you may lose money by investing in the Fund.

Issuer Risk

The value of a security may decline for a number of reasons which directly relate to the issuer, such as management performance, financial leverage and reduced demand for the issuer’s goods or services, as well as the historical and prospective earnings of the issuer and the value of its assets.

Large Capitalization Companies Risk

The securities of large market capitalization companies may underperform other segments of the market because such companies may be less responsive to competitive challenges and opportunities and may be unable to attain high growth rates during periods of economic expansion.

Market Events Risk

Turbulence in financial markets and reduced liquidity in equity, credit and fixed-income markets may negatively affect many issuers worldwide which could adversely affect the Fund.

Market Risk

Market risks, including political, regulatory, market and economic developments, and developments that impact specific economic sectors, industries or segments of the market, can affect the value of the Fund’s shares. The Fund’s equity investments are subject to stock market risk, which involves the possibility that the value of the Fund’s investments in stocks will decline due to drops in the stock market. The Fund’s fixed-income investments are subject to the risk that the lack of liquidity or other adverse credit market conditions may hamper the Fund’s ability to purchase and sell the securities. From time to time, certain investments 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 holdings to meet redemption requests or other cash needs, the Fund may have to sell them at a loss.

Other Investment Companies Risk

The Fund may invest in shares of other registered investment companies, including open-end funds, and money market funds. To the extent that the Fund invests in shares of other registered investment companies, you will indirectly bear fees and expenses charged by the underlying funds in addition to the Fund’s direct fees and expenses and will be subject to the risks associated with investments in those funds.

Prepayment and Extension Risk

The Fund’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’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’s effective maturity and a decline in its price.

Securities Selection Risk

Securities selected by the Manager or 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.

Small and Medium Capitalization Companies Risk

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.

U.S. Government Securities Risk

A security backed by the U.S. Treasury or the full faith and credit of the United States is guaranteed only as to the timely payment of interest and principal when held to maturity. The market prices for such securities are not guaranteed and will fluctuate. They are also subject to credit risk and interest rate risk.

Value Stocks Risk

Value stocks are subject to the risk that their intrinsic value may never be realized by the market or that their prices may 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.

Fund Performance

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 the Russell 1000® Value Index, which is the Fund’s primary benchmark. The table also shows how the Fund’s returns compare to the Barclays® Capital U.S. Aggregate Bond Index, which tracks the performance of fixed-rate debt securities. The Balanced Composite Index is composed of the Russell 1000 Value Index (60%) and the Barclays Capital U.S. Aggregate Bond Index (40%) to reflect the Fund’s allocation of its assets between equity securities and fixed income securities. The Lipper® MTAG Funds Index shows how the Fund’s performance compares to a composite of mutual funds with similar investment objectives.

The chart and the table below show the performance of the Fund’s Institutional Class shares for all periods. The Fund began operations of Advisor Class shares on May 31, 2005, 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 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. 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 share classes had lower expenses than the newer classes, their performance was better than the newer share 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.

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.

Calendar year total returns for Institutional Class shares

Total Return for the Calendar Year Ended 12/31 of each Year

Highest Quarterly Return:	13.81%
(1/1/03 through 12/31/12)	(2nd Quarter 2003)
Lowest Quarterly Return:	-11.11%
(1/1/03 through 12/31/12)	(4th Quarter 2008)

Average Annual Total Returns For the periods ended December 31, 2012

Average Annual Returns American Beacon Balanced Fund		1 Year	5 Years	10 Years	Inception Date
Institutional Class	[1]	14.23%	3.36%	7.45%	Jul. 17, 1987
A Class	[1]	13.76%	2.98%	7.09%	May 17, 2010
C Class	[1]	12.87%	2.58%	6.88%	Sep. 01, 2010
Y Class	[1]	14.12%	3.28%	7.41%	Mar. 01, 2010
Advisor Class	[1]	13.67%	2.83%	6.93%	May 31, 2005
Investor Class	[1]	13.79%	3.03%	7.11%	Aug. 01, 1994
After Taxes on Distributions Institutional Class	[1]	13.04%	2.41%	6.27%
After Taxes on Distributions and Sales Institutional Class	[1]	9.72%	2.37%	6.01%
Russell 1000 Value Index	[1]	17.51%	0.59%	7.38%
Barclays Capital U.S. Aggregate Bond Index	[1]	4.21%	5.95%	5.18%
Balanced Composite Index	[1]	12.17%	3.21%	6.83%
Lipper MTAG Funds Index	[1]	13.67%	2.65%	6.96%

[1] The Total Annual Fund Operating Expenses do not correlate to the ratio of expenses to average net assets provided in the Fund's Financial Highlights table, which reflects the operating expenses of the Fund and does not include Acquired Fund Fees and Expenses.

[2] The Manager has contractually agreed to reduce and/or reimburse the A Class of the Fund for Other Expenses, as applicable, through February 28, 2014 to the extent that Total Annual Fund Operating Expenses exceed 1.10% for the A 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.

[1] 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.

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American Beacon International Equity Fund | American Beacon International Equity Fund

American Beacon International Equity Fund

Investment Objective

The Fund’s investment objective is long-term capital appreciation.

Fees and Expenses of the Fund

This table describes the fees and expenses that you may pay if you buy and hold shares of the Fund.

Shareholder Fees (fees paid directly from your investment)

Shareholder Fees	American Beacon International Equity Fund AMR Class
Redemption fee (as a percentage of amount redeemed; applies to the proceeds of shares redeemed within 90 days of purchase)	2.00%

Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)

Annual Fund Operating Expenses		American Beacon International Equity Fund AMR Class
Management fees		0.32%
Distribution and/or service (12b-1) fees		none
Other expenses		0.13%
Acquired Fund Fees and Expenses		0.01%
Total annual fund operating expenses	[1]	0.46%

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 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:

Expense Example (USD $)	1 year	3 years	5 years	10 years
American Beacon International Equity Fund AMR Class	47	147	257	578

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 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 60% of the average value of its portfolio.

Principal Investment Strategies

Under normal circumstances, at least 80% of the Fund’s net assets (plus the amount of any borrowings for investment purposes) are invested in common stocks and securities convertible into common stocks (collectively, “stocks”) of issuers based in at least three different countries located outside the United States. The Fund will primarily invest in countries comprising the Morgan Stanley Capital International® Europe Australasia Far East Index (“MSCI EAFE Index”). The MSCI EAFE Index is comprised of equity securities of companies from various industrial sectors whose primary trading markets are located outside the United States. Companies included in the MSCI EAFE Index are selected from among the larger capitalization companies in these markets. The Fund may invest in companies of all market capitalizations. The Fund may use futures contracts and foreign currency forward contracts, including non-deliverable forwards ("NDFs") contracts, as a hedge against foreign currency fluctuations.

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 reducing volatility and downside risk.

The sub-advisors select stocks that, in their opinion, have most or all of the following characteristics (relative to that stock’s country, sector or industry):

u above-average return on equity or earnings growth potential,

u below-average price to earnings or price to cash flow ratio,

u below-average price to book value ratio, and

u above-average dividend yields.

The sub-advisors may consider potential changes in currency exchange rates when choosing stocks. Each of the 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. A sub-advisor may trade forward foreign currency contracts, including NDF contracts, or currency futures in an attempt to reduce the Fund’s risk exposure to adverse fluctuations in currency exchange rates.

The Fund may invest cash balances in money market funds and may purchase and sell futures contracts to gain market exposure on cash balances or reduce market exposure in anticipation of liquidity needs.

The Fund may lend its securities to broker-dealers and other institutions to earn additional income.

Principal Risks

There is no assurance that the Fund will achieve its investment objective and you could lose part or all of your investment in the Fund. The Fund is not designed for investors who need an assured level of income and is intended to be a long-term investment. The Fund is not a complete investment program and may not be appropriate for all investors. Investors should carefully consider their own investment goals and risk tolerance before investing in the Fund. The principal risks of investing in the Fund are:

Currency Risk

Foreign currencies may decline in value relative to the U.S. dollar and affect the Fund’s investments in foreign (non-U.S.) currencies or in securities that trade in, and receive revenues in, or in derivatives that provide exposure to, foreign (non-U.S.) currencies.

Equity Investments Risk

Equity securities generally are subject to market risk. The Fund’s investments in equity securities may include common stocks and securities convertible into or exchangeable for common stocks. Investing in such securities may expose the Fund to additional risk. 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 movement in interest rates.  In addition, convertible securities are subject to risk that the credit standing of the issuer may have an effect on the security’s investment value.

Foreign Investing Risk

Non U.S. investments carry potential risks not associated with U.S. investments. Such risks include, but are not limited to: (1) currency exchange rate fluctuations, (2) political and financial instability, (3) less liquidity and greater volatility, (4) lack of uniform accounting, auditing and financial reporting standards, (5) increased price volatility; (6) less government regulation and supervision of foreign stock exchanges, brokers and listed companies; and (7) delays in transaction settlement in some foreign markets.

Futures Contracts and Foreign Currency Forward Contracts Risk

Futures contracts and foreign currency forward contracts, including NDFs, are derivative instruments pursuant to a contract with a counterparty to pay a fixed price for an agreed amount of securities or other underlying assets at an agreed date or to buy or sell a specific currency at a future date at a price set at the time of the contract. The use of such derivative instruments may expose the Fund to additional risks that it would not be subject to if they invested directly in the securities underlying those derivatives. Futures contracts may experience potentially dramatic price changes (losses) and imperfect correlations between the price of the contract and the underlying security, index or currency which will increase the volatility of the Fund and may involve a small investment of cash relative to the magnitude of the risk assumed. There can be no assurance that any strategy used will succeed. Not all forward contracts, including NDFs, require a counterparty to post collateral, which may expose the Fund to greater losses in the event of a default by a counterparty.

Hedging Risk

Gains or losses from positions in hedging instruments may be much greater than the instrument’s original cost. The counterparty may be unable to honor its financial obligation to a Fund. In addition, the Manager or a sub-advisor may be unable to close the transaction at the time it would like or at the price it believes the security is currently worth.

Investment Risk

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. Therefore, you may lose money by investing in the Fund.

Issuer Risk

The value of a security may decline for a number of reasons which directly relate to the issuer, such as management performance, financial leverage and reduced demand for the issuer’s goods or services, as well as the historical and prospective earnings of the issuer and the value of its assets.

Large Capitalization Companies Risk

The securities of large market capitalization companies may underperform other segments of the market because such companies may be less responsive to competitive challenges and opportunities and may be unable to attain high growth rates during periods of economic expansion.

Market Events Risk

Turbulence in financial markets and reduced liquidity in equity, credit and fixed-income markets may negatively affect many issuers worldwide which could adversely affect the Fund.

Market Risk

Market risks, including political, regulatory, market and economic developments and developments that impact specific economic sectors, industries or segments of the market, can affect the value of a Fund’s shares.  Equity investments are subject to stock market risk, which involves the possibility that the value of the Fund’s investments in stocks of a particular country will decline due to drops in the stock market due to general market, regulatory, political and economic conditions.   From time to time, certain investments 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 holdings to meet redemption requests or other cash needs, the Fund may have to sell them at a loss.

Market Timing Risk

Because specific securities in which a Fund may invest, it could be  subject to the risk of market timing activities by shareholders. Some examples of these types of securities are high-yield and foreign securities. The limited trading activity of some high-yield securities may result in market prices that do not reflect the true market value of these securities.  A Fund generally prices foreign securities using their closing prices from the foreign markets in which they trade, typically prior to the Fund’s calculation of its net asset value( “NAV”). These prices may be affected by events that occur after the close of a foreign market but before the Fund prices its shares. In such instances, the Fund may fair value foreign securities. However, some investors may engage in frequent short-term trading in the Fund to take advantage of any price differentials that may be reflected in the net asset value of the Fund’s shares. There is no assurance that fair valuation of securities can reduce or eliminate market timing. While the Manager monitors trading in Fund shares, there is no guarantee that it can detect all market timing activities.

Securities Lending Risk

To the extent the Fund lends its securities, it may be subject to the following risks. Borrowers of the Fund’s securities typically provide collateral in the form of cash that is reinvested in securities. The securities in which the collateral is invested may not perform sufficiently to cover the return collateral payments owed to borrowers. In addition, delays may occur in the recovery of securities from borrowers, which could interfere with the Fund’s ability to vote proxies or to settle transactions.

Securities Selection Risk

Securities selected by the Manager or 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.

Value Stocks Risk

Value stocks are subject to the risk that their intrinsic value may never be realized by the market or that their prices may 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.

Fund Performance

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® International Funds Index, a composite of mutual funds comparable to the Fund. You may obtain updated performance information on the Fund’s website at www.americanbeaconfunds.com. Past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future.

Total Return for the Calendar Year Ended 12/31 of each Year

Highest Quarterly Return:	25.07%
(1/1/03 through 12/31/12)	(2nd Quarter 2009)
Lowest Quarterly Return:	-21.60%
(1/1/03 through 12/31/12)	(3rd Quarter 2011)

Average Annual Total Returns For the periods ended December 31, 2012

Average Annual Returns American Beacon International Equity Fund	1 Year	5 Years	10 Years
AMR Class	21.90%	(2.15%)	9.42%
MCSI EAFE Index	17.32%	(3.69%)	8.21%
Lipper International Funds Index	19.70%	(2.81%)	8.81%

[1] The Total Annual Fund Operating Expenses do not correlate to the ratio of expenses to average net assets provided in the Fund's Financial Highlights table, which reflects the operating expenses of the Fund and does not include Acquired Fund Fees and Expenses.

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American Beacon Large Cap Value Fund | American Beacon Large Cap Value Fund

American Beacon Large Cap Value Fund

Investment Objective

The Fund’s investment objective is long-term capital appreciation and current income.

Fees and Expenses of the Fund

This table describes the fees and expenses that you may pay if you buy and hold shares of the Fund.

Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)

Annual Fund Operating Expenses		American Beacon Large Cap Value Fund AMR Class
Management fees		0.24%
Distribution and/or service (12b-1) fees		none
Other expenses		0.09%
Acquired Fund Fees and Expenses		0.01%
Total annual fund operating expenses	[1]	0.34%

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 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:

Expense Example (USD $)	1 year	3 years	5 years	10 years
American Beacon Large Cap Value Fund AMR Class	35	109	191	431

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 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 30% of the average value of its portfolio.

Principal Investment Strategies

Under normal circumstances, at least 80% of the Fund’s net assets (plus the amount of any borrowings for investment purposes) are invested in equity securities of large market capitalization U.S. companies. These companies have market capitalizations within the market capitalization range 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, 2012, the market capitalizations of the companies in the Russell 1000 Index ranged from $313 million to $498 billion. 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 (“ADRs”) and U.S. dollar-denominated foreign stocks trading on U.S. exchanges (collectively referred to as “stocks”).

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 reducing volatility and downside risk.

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):

u above-average earnings growth potential,

u below-average price to earnings ratio,

u below-average price to book value ratio, and

u above-average dividend yields.

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 sub-advisors typically seek to invest in companies that they believe are undervalued at the time of purchase. 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.

The Fund may invest cash balances in money market funds and may purchase and sell futures contracts to gain market exposure on cash balances or reduce market exposure in anticipation of liquidity needs.

Principal Risks

There is no assurance that the Fund will achieve its investment objective and you could lose part or all of your investment in the Fund. The Fund is not designed for investors who need an assured level of income and is intended to be a long-term investment. The Fund is not a complete investment program and may not be appropriate for all investors. Investors should carefully consider their own investment goals and risk tolerance before investing in the Fund. The principal risks of investing in the Fund are:

Equity Investments Risk

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, REITs, ADRs and U.S. dollar-denominated foreign stocks traded on U.S. exchanges. Such investments may expose the Fund to additional risks.

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 traded 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.

Foreign Exposure Risk

The Fund may invest in securities issued by foreign companies through ADRs and U.S. dollar-denominated foreign stocks trading on U.S. exchanges. ADRs 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.  Non-U.S. investments carry potential risks not associated with U.S. investments. Such risks include, but are not limited to: (1) currency exchange rate fluctuations, (2) political and financial instability, (3) less liquidity and greater volatility, (4) lack of uniform accounting, auditing and financial reporting standards, (5) increased price volatility, and (6) less government regulation and supervision of foreign stock exchanges, brokers and listed companies.

Futures Contracts Risk

Futures contracts are a type of derivative investment. A derivative refers to any financial instrument whose value is derived, at least in part, from the price of another security or a specified index, asset or rate. The use of derivatives presents risks different from, and possibly greater than, the risks associated with investing directly in traditional securities. Gains or losses in a derivative may be magnified and may be much greater than the derivatives original cost.

There may be an imperfect correlation between the changes in market value of the securities held by the Fund and the prices of futures contracts. There may not be a liquid secondary market for the futures contract. When the Fund purchases or sells a futures contract, it is subject to daily variation margin calls that could be substantial in the event of adverse price movements. If the Fund has insufficient cash to meet daily variation margin requirements, it might need to sell securities at a time when such sales are disadvantageous.

Investment Risk

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. Therefore, you may lose money by investing in the Fund.

Issuer Risk

The value of a security may decline for a number of reasons which directly relate to the issuer, such as management performance, financial leverage and reduced demand for the issuer’s goods or services, as well as the historical and prospective earnings of the issuer and the value of its assets.

Large Capitalization Companies Risk

The securities of large market capitalization companies may underperform other segments of the market because such companies may be less responsive to competitive challenges and opportunities and may be unable to attain high growth rates during periods of economic expansion.

Market Events Risk

Turbulence in financial markets and reduced liquidity in equity, credit and fixed-income markets may negatively affect many issuers worldwide which could adversely affect the Fund.

Market Risk

Market risks, including political, regulatory, market and economic developments, and developments that impact specific economic sectors, industries or segments of the market, can affect the value of the Fund’s shares.  The Fund’s equity investments are subject to stock market risk, which  involves the possibility that the value of the Fund’s investments in stocks will decline due to drops in the stock market. From time to time, certain investments 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 holdings to meet redemption requests or other cash needs, the Fund may have to sell them at a loss.

Securities Selection Risk

Securities selected by the Manager or 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.

Value Stocks Risk

Value stocks are subject to the risk that their intrinsic value may never be realized by the market or that their prices may 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.

Fund Performance

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. 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.

Total Return for the Calendar Year Ended 12/31 of each Year

Highest Quarterly Return:	19.91%
(1/1/03 through 12/31/12)	(2nd Quarter 2003)
Lowest Quarterly Return:	-21.51%
(1/1/03 through 12/31/12)	(4th Quarter 2008)

Average Annual Total Returns For the periods ended December 31, 2012

Average Annual Returns American Beacon Large Cap Value Fund	1 Year	5 Years	10 Years
AMR Class	19.43%	0.84%	8.75%
Russell 1000 Value Index	17.51%	0.59%	7.38%
Lipper® Large-Cap Value Funds Index	(15.87%)	(0.17%)	6.41%

[1] The Total Annual Fund Operating Expenses do not correlate to the ratio of expenses to average net assets provided in the Fund's Financial Highlights table, which reflects the operating expenses of the Fund and does not include Acquired Fund Fees and Expenses.

XML

Label

Element

Value

Risk/Return:

rr_RiskReturnAbstract

Risk/Return [Heading]

rr_RiskReturnHeading

American Beacon Large Cap Value Fund

Objective [Heading]

rr_ObjectiveHeading

Investment Objective

Objective, Primary [Text Block]

rr_ObjectivePrimaryTextBlock

The Fund’s investment objective is long-term capital appreciation and current income.

Expense [Heading]

rr_ExpenseHeading

Fees and Expenses of the Fund

Expense Narrative [Text Block]

rr_ExpenseNarrativeTextBlock

This table describes the fees and expenses that you may pay if you buy and hold shares of the Fund.

Operating Expenses Caption [Text]

rr_OperatingExpensesCaption

Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)

Portfolio Turnover [Heading]

rr_PortfolioTurnoverHeading

Portfolio Turnover

Portfolio Turnover [Text Block]

rr_PortfolioTurnoverTextBlock

The Fund pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when fund shares are held in a taxable account. These costs, which are not reflected in annual fund operating expenses or in the example, affect the Fund’s performance. During the most recent fiscal year, the Fund’s portfolio turnover rate was 30% of the average value of its portfolio.

Portfolio Turnover, Rate

rr_PortfolioTurnoverRate

30.00%

Expenses Not Correlated to Ratio Due to Acquired Fund Fees [Text]

rr_ExpensesNotCorrelatedToRatioDueToAcquiredFundFees

The Total Annual Fund Operating Expenses do not correlate to the ratio of expenses to average net assets provided in the Fund's Financial Highlights table, which reflects the operating expenses of the Fund and does not include Acquired Fund Fees and Expenses.

Expense Example [Heading]

rr_ExpenseExampleHeading

Example

Expense Example Narrative [Text Block]

rr_ExpenseExampleNarrativeTextBlock

This Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return each year and that the Fund’s operating expenses remain the same. Although your actual costs may be higher or lower, based on these assumptions, your costs would be:

Strategy [Heading]

rr_StrategyHeading

Principal Investment Strategies

Strategy Narrative [Text Block]

rr_StrategyNarrativeTextBlock

Under normal circumstances, at least 80% of the Fund’s net assets (plus the amount of any borrowings for investment purposes) are invested in equity securities of large market capitalization U.S. companies. These companies have market capitalizations within the market capitalization range 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, 2012, the market capitalizations of the companies in the Russell 1000 Index ranged from $313 million to $498 billion. 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 (“ADRs”) and U.S. dollar-denominated foreign stocks trading on U.S. exchanges (collectively referred to as “stocks”).

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 reducing volatility and downside risk.

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):

u above-average earnings growth potential,

u below-average price to earnings ratio,

u below-average price to book value ratio, and

u above-average dividend yields.

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 sub-advisors typically seek to invest in companies that they believe are undervalued at the time of purchase. 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.

The Fund may invest cash balances in money market funds and may purchase and sell futures contracts to gain market exposure on cash balances or reduce market exposure in anticipation of liquidity needs.

Risk [Heading]

rr_RiskHeading

Principal Risks

Risk Narrative [Text Block]

rr_RiskNarrativeTextBlock

There is no assurance that the Fund will achieve its investment objective and you could lose part or all of your investment in the Fund. The Fund is not designed for investors who need an assured level of income and is intended to be a long-term investment. The Fund is not a complete investment program and may not be appropriate for all investors. Investors should carefully consider their own investment goals and risk tolerance before investing in the Fund. The principal risks of investing in the Fund are:

Equity Investments Risk

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, REITs, ADRs and U.S. dollar-denominated foreign stocks traded on U.S. exchanges. Such investments may expose the Fund to additional risks.

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 traded 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.

Foreign Exposure Risk

The Fund may invest in securities issued by foreign companies through ADRs and U.S. dollar-denominated foreign stocks trading on U.S. exchanges. ADRs 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.  Non-U.S. investments carry potential risks not associated with U.S. investments. Such risks include, but are not limited to: (1) currency exchange rate fluctuations, (2) political and financial instability, (3) less liquidity and greater volatility, (4) lack of uniform accounting, auditing and financial reporting standards, (5) increased price volatility, and (6) less government regulation and supervision of foreign stock exchanges, brokers and listed companies.

Futures Contracts Risk

Futures contracts are a type of derivative investment. A derivative refers to any financial instrument whose value is derived, at least in part, from the price of another security or a specified index, asset or rate. The use of derivatives presents risks different from, and possibly greater than, the risks associated with investing directly in traditional securities. Gains or losses in a derivative may be magnified and may be much greater than the derivatives original cost.

There may be an imperfect correlation between the changes in market value of the securities held by the Fund and the prices of futures contracts. There may not be a liquid secondary market for the futures contract. When the Fund purchases or sells a futures contract, it is subject to daily variation margin calls that could be substantial in the event of adverse price movements. If the Fund has insufficient cash to meet daily variation margin requirements, it might need to sell securities at a time when such sales are disadvantageous.

Investment Risk

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. Therefore, you may lose money by investing in the Fund.

Issuer Risk

The value of a security may decline for a number of reasons which directly relate to the issuer, such as management performance, financial leverage and reduced demand for the issuer’s goods or services, as well as the historical and prospective earnings of the issuer and the value of its assets.

Large Capitalization Companies Risk

The securities of large market capitalization companies may underperform other segments of the market because such companies may be less responsive to competitive challenges and opportunities and may be unable to attain high growth rates during periods of economic expansion.

Market Events Risk

Turbulence in financial markets and reduced liquidity in equity, credit and fixed-income markets may negatively affect many issuers worldwide which could adversely affect the Fund.

Market Risk

Market risks, including political, regulatory, market and economic developments, and developments that impact specific economic sectors, industries or segments of the market, can affect the value of the Fund’s shares.  The Fund’s equity investments are subject to stock market risk, which  involves the possibility that the value of the Fund’s investments in stocks will decline due to drops in the stock market. From time to time, certain investments 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 holdings to meet redemption requests or other cash needs, the Fund may have to sell them at a loss.

Securities Selection Risk

Securities selected by the Manager or 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.

Value Stocks Risk

Value stocks are subject to the risk that their intrinsic value may never be realized by the market or that their prices may 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.

Risk Lose Money [Text]

rr_RiskLoseMoney

There is no assurance that the Fund will achieve its investment objective and you could lose part or all of your investment in the Fund.

Risk Not Insured Depository Institution [Text]

rr_RiskNotInsuredDepositoryInstitution

An investment in the Fund is not a deposit of a bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.

Bar Chart and Performance Table [Heading]

rr_BarChartAndPerformanceTableHeading

Fund Performance

Performance Narrative [Text Block]

rr_PerformanceNarrativeTextBlock

The bar chart and table below provide an indication of risk by showing 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. You may obtain updated performance information on the Fund’s website at www.americanbeaconfunds.com. Past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future.

Performance Information Illustrates Variability of Returns [Text]

rr_PerformanceInformationIllustratesVariabilityOfReturns

The bar chart and table below provide an indication of risk by showing how the Fund's performance has varied from year to year.

Performance Availability Website Address [Text]

rr_PerformanceAvailabilityWebSiteAddress

www.americanbeaconfunds.com

Performance Past Does Not Indicate Future [Text]

rr_PerformancePastDoesNotIndicateFuture

Past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future.

Bar Chart [Heading]

rr_BarChartHeading

Total Return for the Calendar Year Ended 12/31 of each Year

Bar Chart Closing [Text Block]

rr_BarChartClosingTextBlock

Highest Quarterly Return:	19.91%
(1/1/03 through 12/31/12)	(2nd Quarter 2003)
Lowest Quarterly Return:	-21.51%
(1/1/03 through 12/31/12)	(4th Quarter 2008)

Highest Quarterly Return, Label

rr_HighestQuarterlyReturnLabel

Highest Quarterly Return:

Highest Quarterly Return, Date

rr_BarChartHighestQuarterlyReturnDate

Jun. 30, 2003

Highest Quarterly Return

rr_BarChartHighestQuarterlyReturn

19.91%

Lowest Quarterly Return, Label

rr_LowestQuarterlyReturnLabel

Lowest Quarterly Return:

Lowest Quarterly Return, Date

rr_BarChartLowestQuarterlyReturnDate

Dec. 31, 2008

Lowest Quarterly Return

rr_BarChartLowestQuarterlyReturn

(21.51%)

Performance Table Heading

rr_PerformanceTableHeading

Average Annual Total Returns For the periods ended December 31, 2012

Russell 1000 Value Index

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

17.51%

5 Years

rr_AverageAnnualReturnYear05

0.59%

10 Years

rr_AverageAnnualReturnYear10

7.38%

Lipper® Large-Cap Value Funds Index

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

(15.87%)

5 Years

rr_AverageAnnualReturnYear05

(0.17%)

10 Years

rr_AverageAnnualReturnYear10

6.41%

AMR Class

Risk/Return:

rr_RiskReturnAbstract

Management fees

rr_ManagementFeesOverAssets

0.24%

Distribution and/or service (12b-1) fees

rr_DistributionAndService12b1FeesOverAssets

none

Other expenses

rr_OtherExpensesOverAssets

0.09%

Acquired Fund Fees and Expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.01%

Total annual fund operating expenses

rr_ExpensesOverAssets

0.34%

^[1]

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

35

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

109

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

191

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

431

Annual Return 2003

rr_AnnualReturn2003

35.75%

Annual Return 2004

rr_AnnualReturn2004

19.43%

Annual Return 2005

rr_AnnualReturn2005

9.93%

Annual Return 2006

rr_AnnualReturn2006

19.01%

Annual Return 2007

rr_AnnualReturn2007

3.18%

Annual Return 2008

rr_AnnualReturn2008

(39.39%)

Annual Return 2009

rr_AnnualReturn2009

27.51%

Annual Return 2010

rr_AnnualReturn2010

14.56%

Annual Return 2011

rr_AnnualReturn2011

(2.34%)

Annual Return 2012

rr_AnnualReturn2012

19.07%

1 Year

rr_AverageAnnualReturnYear01

19.43%

5 Years

rr_AverageAnnualReturnYear05

0.84%

10 Years

rr_AverageAnnualReturnYear10

8.75%

[1] The Total Annual Fund Operating Expenses do not correlate to the ratio of expenses to average net assets provided in the Fund's Financial Highlights table, which reflects the operating expenses of the Fund and does not include Acquired Fund Fees and Expenses.

XML

Label

Element

Value

Risk/Return:

rr_RiskReturnAbstract

Risk/Return [Heading]

rr_RiskReturnHeading

American Beacon Large Cap Value Fund

Objective [Heading]

rr_ObjectiveHeading

Investment Objective

Objective, Primary [Text Block]

rr_ObjectivePrimaryTextBlock

The Fund’s investment objective is long-term capital appreciation and current income.

Expense [Heading]

rr_ExpenseHeading

Fees and Expenses of the Fund

Expense Narrative [Text Block]

rr_ExpenseNarrativeTextBlock

This table describes the fees and expenses that you may pay if you buy and hold shares of the Fund. 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 101 of the Prospectus and “Additional Purchase and Sale Information for A Class Shares” on page 78 of the statement of additional information.

Shareholder Fees Caption [Text]

rr_ShareholderFeesCaption

Shareholder fees (fees paid directly from your investment)

Operating Expenses Caption [Text]

rr_OperatingExpensesCaption

Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)

Portfolio Turnover [Heading]

rr_PortfolioTurnoverHeading

Portfolio Turnover

Portfolio Turnover [Text Block]

rr_PortfolioTurnoverTextBlock

The Fund pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when fund shares are held in a taxable account. These costs, which are not reflected in annual fund operating expenses or in the example, affect the Fund’s performance. During the most recent fiscal year, the Fund’s portfolio turnover rate was 30% of the average value of its portfolio.

Portfolio Turnover, Rate

rr_PortfolioTurnoverRate

30.00%

Expense Breakpoint Discounts [Text]

rr_ExpenseBreakpointDiscounts

You may qualify for sales discounts if you and your eligible family members invest, or agree to invest in the future, at least $50,000 in the A Class shares of the American Beacon Funds.

Expense Breakpoint, Minimum Investment Required [Amount]

rr_ExpenseBreakpointMinimumInvestmentRequiredAmount

$ 50,000

Expenses Not Correlated to Ratio Due to Acquired Fund Fees [Text]

rr_ExpensesNotCorrelatedToRatioDueToAcquiredFundFees

The Total Annual Fund Operating Expenses do not correlate to the ratio of expenses to average net assets provided in the Fund's Financial Highlights table, which reflects the operating expenses of the Fund and does not include Acquired Fund Fees and Expenses.

Expense Example [Heading]

rr_ExpenseExampleHeading

Example

Expense Example Narrative [Text Block]

rr_ExpenseExampleNarrativeTextBlock

This Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return each year and that the Fund’s operating expenses remain the same. Although your actual costs may be higher or lower, based on these assumptions, your costs would be:

Expense Example, No Redemption, By Year, Caption [Text]

rr_ExpenseExampleNoRedemptionByYearCaption

Assuming no redemption of shares:

Strategy [Heading]

rr_StrategyHeading

Principal Investment Strategies

Strategy Narrative [Text Block]

rr_StrategyNarrativeTextBlock

Under normal circumstances, at least 80% of the Fund’s net assets (plus the amount of any borrowings for investment purposes) are invested in equity securities of large market capitalization U.S. companies. These companies have market capitalizations within the market capitalization range 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, 2012, the market capitalizations of the companies in the Russell 1000 Index ranged from $313 million to $498 billion.

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 (“ADRs”) and U.S. dollar-denominated foreign stocks trading on U.S. exchanges (collectively referred to as “stocks”).

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 reducing volatility and downside risk.

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):

u above-average earnings growth potential,

u below-average price to earnings ratio,

u below-average price to book value ratio, and

u above-average dividend yields.

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 sub-advisors typically seek to invest in companies that they believe are undervalued at the time of purchase. 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.

The Fund may invest cash balances in money market funds and may purchase and sell futures contracts to gain market exposure on cash balances or reduce market exposure in anticipation of liquidity needs.

Risk [Heading]

rr_RiskHeading

Principal Risks

Risk Narrative [Text Block]

rr_RiskNarrativeTextBlock

There is no assurance that the Fund will achieve its investment objective and you could lose part or all of your investment in the Fund. The Fund is not designed for investors who need an assured level of income and is intended to be a long-term investment. The Fund is not a complete investment program and may not be appropriate for all investors. Investors should carefully consider their own investment goals and risk tolerance before investing in the Fund. The principal risks of investing in the Fund are:

Equity Investments Risk

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, REITs, ADRs and U.S. dollar-denominated foreign stocks traded on U.S. exchanges. Such investments may expose the Fund to additional risks.

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 traded 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.

Foreign Exposure Risk

The Fund may invest in securities issued by foreign companies through ADRs and U.S. dollar-denominated foreign stocks trading on U.S. exchanges. ADRs 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. Non-U.S. investments carry potential risks not associated with U.S. investments. Such risks include, but are not limited to: (1) currency exchange rate fluctuations, (2) political and financial instability, (3) less liquidity and greater volatility, (4) lack of uniform accounting, auditing and financial reporting standards, (5) increased price volatility, and (6) less government regulation and supervision of foreign stock exchanges, brokers and listed companies.

Futures Contracts Risk

Futures contracts are a type of derivative investment. A derivative refers to any financial instrument whose value is derived, at least in part, from the price of another security or a specified index, asset or rate. The use of derivatives presents risks different from, and possibly greater than, the risks associated with investing directly in traditional securities. Gains or losses in a derivative may be magnified and may be much greater than the derivatives original cost.

There may be an imperfect correlation between the changes in market value of the securities held by the Fund and the prices of futures contracts. There may not be a liquid secondary market for the futures contract. When the Fund purchases or sells a futures contract, it is subject to daily variation margin calls that could be substantial in the event of adverse price movements. If the Fund has insufficient cash to meet daily variation margin requirements, it might need to sell securities at a time when such sales are disadvantageous.

Investment Risk

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. Therefore, you may lose money by investing in the Fund.

Issuer Risk

The value of a security may decline for a number of reasons which directly relate to the issuer, such as management performance, financial leverage and reduced demand for the issuer’s goods or services, as well as the historical and prospective earnings of the issuer and the value of its assets.

Large Capitalization Companies Risk

The securities of large market capitalization companies may underperform other segments of the market because such companies may be less responsive to competitive challenges and opportunities and may be unable to attain high growth rates during periods of economic expansion.

Market Events Risk

Turbulence in financial markets and reduced liquidity in equity, credit and fixed-income markets may negatively affect many issuers worldwide which could adversely affect the Fund.

Market Risk

Market risks, including political, regulatory, market and economic developments, and developments that impact specific economic sectors, industries or segments of the market, can affect the value of the Fund’s shares. The Fund’s equity investments are subject to stock market risk, which involves the possibility that the value of the Fund’s investments in stocks will decline due to drops in the stock market. From time to time, certain investments 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 holdings to meet redemption requests or other cash needs, the Fund may have to sell them at a loss.

Securities Selection Risk

Securities selected by the Manager or 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.

Value Stocks Risk

Value stocks are subject to the risk that their intrinsic value may never be realized by the market or that their prices may 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.

Risk Lose Money [Text]

rr_RiskLoseMoney

There is no assurance that the Fund will achieve its investment objective and you could lose part or all of your investment in the Fund.

Risk Not Insured Depository Institution [Text]

rr_RiskNotInsuredDepositoryInstitution

An investment in the Fund is not a deposit of a bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.

Bar Chart and Performance Table [Heading]

rr_BarChartAndPerformanceTableHeading

Fund Performance

Performance Narrative [Text Block]

rr_PerformanceNarrativeTextBlock

The bar chart and table below provide an indication of risk by showing 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.

The chart and the table below show the performance of the Fund’s Institutional Class shares for all periods. The Fund began operations of 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.

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.

Performance Information Illustrates Variability of Returns [Text]

rr_PerformanceInformationIllustratesVariabilityOfReturns

The bar chart and table below provide an indication of risk by showing how the Fund's performance has varied from year to year.

Performance Availability Website Address [Text]

rr_PerformanceAvailabilityWebSiteAddress

www.americanbeaconfunds.com

Performance Past Does Not Indicate Future [Text]

rr_PerformancePastDoesNotIndicateFuture

Past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future.

Bar Chart [Heading]

rr_BarChartHeading

Calendar year total returns for Institutional Class shares

Bar Chart Narrative [Text Block]

rr_BarChartNarrativeTextBlock

Total Return for the Calendar Year Ended 12/31 of each Year

Bar Chart Does Not Reflect Sales Loads [Text]

rr_BarChartDoesNotReflectSalesLoads

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.

Bar Chart Closing [Text Block]

rr_BarChartClosingTextBlock

Highest Quarterly Return:	19.92%
(1/1/03 through 12/31/12)	(2nd Quarter 2003)
Lowest Quarterly Return:	-21.54%
(1/1/0 through 12/31/12)	(4th Quarter 2008)

Highest Quarterly Return, Label

rr_HighestQuarterlyReturnLabel

Highest Quarterly Return:

Highest Quarterly Return, Date

rr_BarChartHighestQuarterlyReturnDate

Jun. 30, 2003

Highest Quarterly Return

rr_BarChartHighestQuarterlyReturn

19.92%

Lowest Quarterly Return, Label

rr_LowestQuarterlyReturnLabel

Lowest Quarterly Return:

Lowest Quarterly Return, Date

rr_BarChartLowestQuarterlyReturnDate

Dec. 31, 2008

Lowest Quarterly Return

rr_BarChartLowestQuarterlyReturn

(21.54%)

Performance Table Heading

rr_PerformanceTableHeading

Average Annual Total Returns For the periods ended December 31, 2012

Performance Table Uses Highest Federal Rate

rr_PerformanceTableUsesHighestFederalRate

After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes.

Performance Table Not Relevant to Tax Deferred

rr_PerformanceTableNotRelevantToTaxDeferred

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.

Performance Table One Class of after Tax Shown [Text]

rr_PerformanceTableOneClassOfAfterTaxShown

After-tax returns are shown only for Institutional Class shares; after-tax returns for other share classes will vary.

Russell 1000 Value Index

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

17.51%

^[1]

5 Years

rr_AverageAnnualReturnYear05

0.59%

^[1]

10 Years

rr_AverageAnnualReturnYear10

7.38%

^[1]

Lipper Large-Cap Value Funds Index

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

15.87%

^[1]

5 Years

rr_AverageAnnualReturnYear05

0.17%

^[1]

10 Years

rr_AverageAnnualReturnYear10

6.41%

^[1]

Institutional Class

Risk/Return:

rr_RiskReturnAbstract

Maximum sales charge imposed on purchases (as a percentage of offering price)

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

none

Maximum deferred sales charge load (as a percentage of the lower of original offering price or redemption proceeds)

rr_MaximumDeferredSalesChargeOverOther

none

Management fees

rr_ManagementFeesOverAssets

0.24%

Distribution and/or service (12b-1) fees

rr_DistributionAndService12b1FeesOverAssets

none

Other expenses

rr_OtherExpensesOverAssets

0.35%

Acquired Fund Fees and Expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.01%

Total annual fund operating expenses

rr_ExpensesOverAssets

0.60%

^[2]

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

61

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

192

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

335

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

750

Annual Return 2003

rr_AnnualReturn2003

35.75%

Annual Return 2004

rr_AnnualReturn2004

19.43%

Annual Return 2005

rr_AnnualReturn2005

9.93%

Annual Return 2006

rr_AnnualReturn2006

19.01%

Annual Return 2007

rr_AnnualReturn2007

3.18%

Annual Return 2008

rr_AnnualReturn2008

(39.39%)

Annual Return 2009

rr_AnnualReturn2009

27.51%

Annual Return 2010

rr_AnnualReturn2010

14.56%

Annual Return 2011

rr_AnnualReturn2011

(2.34%)

Annual Return 2012

rr_AnnualReturn2012

19.07%

1 Year

rr_AverageAnnualReturnYear01

19.07%

^[1]

5 Years

rr_AverageAnnualReturnYear05

0.59%

^[1]

10 Years

rr_AverageAnnualReturnYear10

8.46%

^[1]

Inception Date

rr_AverageAnnualReturnInceptionDate

Jul. 17, 1987

^[1]

Institutional Class | After Taxes on Distributions

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

18.16%

^[1]

5 Years

rr_AverageAnnualReturnYear05

0.17%

^[1]

10 Years

rr_AverageAnnualReturnYear10

7.94%

^[1]

Institutional Class | After Taxes on Distributions and Sales

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

12.40%

^[1]

5 Years

rr_AverageAnnualReturnYear05

0.35%

^[1]

10 Years

rr_AverageAnnualReturnYear10

7.36%

^[1]

Investor Class

Risk/Return:

rr_RiskReturnAbstract

Maximum sales charge imposed on purchases (as a percentage of offering price)

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

none

Maximum deferred sales charge load (as a percentage of the lower of original offering price or redemption proceeds)

rr_MaximumDeferredSalesChargeOverOther

none

Management fees

rr_ManagementFeesOverAssets

0.24%

Distribution and/or service (12b-1) fees

rr_DistributionAndService12b1FeesOverAssets

none

Other expenses

rr_OtherExpensesOverAssets

0.72%

Acquired Fund Fees and Expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.01%

Total annual fund operating expenses

rr_ExpensesOverAssets

0.97%

^[2]

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

99

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

309

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

536

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

1,189

1 Year

rr_AverageAnnualReturnYear01

18.68%

^[1]

5 Years

rr_AverageAnnualReturnYear05

0.24%

^[1]

10 Years

rr_AverageAnnualReturnYear10

8.14%

^[1]

Inception Date

rr_AverageAnnualReturnInceptionDate

Aug. 01, 1994

^[1]

Advisor Class

Risk/Return:

rr_RiskReturnAbstract

Maximum sales charge imposed on purchases (as a percentage of offering price)

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

none

Maximum deferred sales charge load (as a percentage of the lower of original offering price or redemption proceeds)

rr_MaximumDeferredSalesChargeOverOther

none

Management fees

rr_ManagementFeesOverAssets

0.24%

Distribution and/or service (12b-1) fees

rr_DistributionAndService12b1FeesOverAssets

0.25%

Other expenses

rr_OtherExpensesOverAssets

0.59%

Acquired Fund Fees and Expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.01%

Total annual fund operating expenses

rr_ExpensesOverAssets

1.09%

^[2]

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

111

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

346

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

601

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

1,329

1 Year

rr_AverageAnnualReturnYear01

18.52%

^[1]

5 Years

rr_AverageAnnualReturnYear05

0.08%

^[1]

10 Years

rr_AverageAnnualReturnYear10

7.98%

^[1]

Inception Date

rr_AverageAnnualReturnInceptionDate

May 31, 2005

^[1]

Retirement Class

Risk/Return:

rr_RiskReturnAbstract

Maximum sales charge imposed on purchases (as a percentage of offering price)

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

none

Maximum deferred sales charge load (as a percentage of the lower of original offering price or redemption proceeds)

rr_MaximumDeferredSalesChargeOverOther

none

Management fees

rr_ManagementFeesOverAssets

0.24%

Distribution and/or service (12b-1) fees

rr_DistributionAndService12b1FeesOverAssets

0.50%

Other expenses

rr_OtherExpensesOverAssets

0.67%

Acquired Fund Fees and Expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.01%

Total annual fund operating expenses

rr_ExpensesOverAssets

1.43%

^[2]

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

146

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

453

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

782

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

1,714

1 Year

rr_AverageAnnualReturnYear01

18.05%

^[1]

5 Years

rr_AverageAnnualReturnYear05

(0.15%)

^[1]

10 Years

rr_AverageAnnualReturnYear10

7.86%

^[1]

Inception Date

rr_AverageAnnualReturnInceptionDate

May 01, 2009

^[1]

Y Class

Risk/Return:

rr_RiskReturnAbstract

Maximum sales charge imposed on purchases (as a percentage of offering price)

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

none

Maximum deferred sales charge load (as a percentage of the lower of original offering price or redemption proceeds)

rr_MaximumDeferredSalesChargeOverOther

none

Management fees

rr_ManagementFeesOverAssets

0.24%

Distribution and/or service (12b-1) fees

rr_DistributionAndService12b1FeesOverAssets

none

Other expenses

rr_OtherExpensesOverAssets

0.45%

Acquired Fund Fees and Expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.01%

Total annual fund operating expenses

rr_ExpensesOverAssets

0.70%

^[2]

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

72

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

225

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

391

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

871

1 Year

rr_AverageAnnualReturnYear01

18.99%

^[1]

5 Years

rr_AverageAnnualReturnYear05

0.52%

^[1]

10 Years

rr_AverageAnnualReturnYear10

8.43%

^[1]

Inception Date

rr_AverageAnnualReturnInceptionDate

Aug. 03, 2009

^[1]

A Class

Risk/Return:

rr_RiskReturnAbstract

Maximum sales charge imposed on purchases (as a percentage of offering price)

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

5.75%

Maximum deferred sales charge load (as a percentage of the lower of original offering price or redemption proceeds)

rr_MaximumDeferredSalesChargeOverOther

none

Management fees

rr_ManagementFeesOverAssets

0.24%

Distribution and/or service (12b-1) fees

rr_DistributionAndService12b1FeesOverAssets

0.25%

Other expenses

rr_OtherExpensesOverAssets

0.63%

Acquired Fund Fees and Expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.01%

Total annual fund operating expenses

rr_ExpensesOverAssets

1.13%

^[2]

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

684

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

914

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

1,162

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

1,871

1 Year

rr_AverageAnnualReturnYear01

18.48%

^[1]

5 Years

rr_AverageAnnualReturnYear05

0.17%

^[1]

10 Years

rr_AverageAnnualReturnYear10

8.10%

^[1]

Inception Date

rr_AverageAnnualReturnInceptionDate

May 17, 2010

^[1]

C Class

Risk/Return:

rr_RiskReturnAbstract

Maximum sales charge imposed on purchases (as a percentage of offering price)

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

none

Maximum deferred sales charge load (as a percentage of the lower of original offering price or redemption proceeds)

rr_MaximumDeferredSalesChargeOverOther

1.00%

Management fees

rr_ManagementFeesOverAssets

0.24%

Distribution and/or service (12b-1) fees

rr_DistributionAndService12b1FeesOverAssets

1.00%

Other expenses

rr_OtherExpensesOverAssets

0.64%

Acquired Fund Fees and Expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.01%

Total annual fund operating expenses

rr_ExpensesOverAssets

1.89%

^[2]

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

292

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

594

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

1,021

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

2,212

Expense Example, No Redemption, 1 Year

rr_ExpenseExampleNoRedemptionYear01

192

Expense Example, No Redemption, 3 Years

rr_ExpenseExampleNoRedemptionYear03

594

Expense Example, No Redemption, 5 Years

rr_ExpenseExampleNoRedemptionYear05

1,021

Expense Example, No Redemption, 10 Years

rr_ExpenseExampleNoRedemptionYear10

$ 2,212

1 Year

rr_AverageAnnualReturnYear01

17.54%

^[1]

5 Years

rr_AverageAnnualReturnYear05

(0.20%)

^[1]

10 Years

rr_AverageAnnualReturnYear10

7.90%

^[1]

Inception Date

rr_AverageAnnualReturnInceptionDate

Sep. 01, 2010

^[1]

[1] 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.

[2] The Total Annual Fund Operating Expenses do not correlate to the ratio of expenses to average net assets provided in the Fund's Financial Highlights table, which reflects the operating expenses of the Fund and does not include Acquired Fund Fees and Expenses.

XML

Label

Element

Value

Risk/Return:

rr_RiskReturnAbstract

Risk/Return [Heading]

rr_RiskReturnHeading

American Beacon Balanced Fund

Objective [Heading]

rr_ObjectiveHeading

Investment Objective

Objective, Primary [Text Block]

rr_ObjectivePrimaryTextBlock

The Fund’s investment objective is income and capital appreciation.

Expense [Heading]

rr_ExpenseHeading

Fees and Expenses of the Fund

Expense Narrative [Text Block]

rr_ExpenseNarrativeTextBlock

This table describes the fees and expenses that you may pay if you buy and hold shares of the Fund.

Operating Expenses Caption [Text]

rr_OperatingExpensesCaption

Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)

Portfolio Turnover [Heading]

rr_PortfolioTurnoverHeading

Portfolio Turnover

Portfolio Turnover [Text Block]

rr_PortfolioTurnoverTextBlock

The Fund pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when fund shares are held in a taxable account. These costs, which are not reflected in annual fund operating expenses or in the example, affect the Fund’s performance. During the most recent fiscal year, the Fund’s portfolio turnover rate was 58% of the average value of its portfolio.

Portfolio Turnover, Rate

rr_PortfolioTurnoverRate

58.00%

Expenses Not Correlated to Ratio Due to Acquired Fund Fees [Text]

rr_ExpensesNotCorrelatedToRatioDueToAcquiredFundFees

The Total Annual Fund Operating Expenses do not correlate to the ratio of expenses to average net assets provided in the Fund's Financial Highlights table, which reflects the operating expenses of the Fund and does not include Acquired Fund Fees and Expenses.

Expense Example [Heading]

rr_ExpenseExampleHeading

Example

Expense Example Narrative [Text Block]

rr_ExpenseExampleNarrativeTextBlock

This Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return each year and that the Fund’s operating expenses remain the same. Although your actual costs may be higher or lower, based on these assumptions, your costs would be:

Strategy [Heading]

rr_StrategyHeading

Principal Investment Strategies

Strategy Narrative [Text Block]

rr_StrategyNarrativeTextBlock

Under normal circumstances, between 50% and 70% of the Fund’s total assets are invested in equity securities and between 30% and 50% of the Fund’s total assets are invested in debt securities.

The Fund’s equity investments may include common stocks, preferred stocks, securities convertible into common stocks, real estate investment trusts (“REITs”), American Depositary Receipts (“ADRs”) and U.S. dollar-denominated foreign stocks traded on U.S. exchanges (collectively referred to as “stocks”). The Fund may invest in companies of all market capitalizations.

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 reducing volatility and downside risk.

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):

u above-average earnings growth potential,

u below-average price to earnings ratio,

u below-average price to book value ratio, and

u above-average dividend yields.

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.

The Fund’s debt securities may include: obligations of the U.S. Government, its agencies and instrumentalities, including U.S. Government-sponsored enterprises (some of which are not backed by the full faith and credit of the U.S. Government); U.S. and U.S. dollar-denominated foreign corporate debt securities, such as notes and bonds, mortgage-backed securities; asset-backed securities; master-demand notes and other debt securities. The Fund will only buy debt securities that are deemed by the Manager or sub-advisors, as applicable, to be investment grade at the time of the purchase. If an investment held by the Fund is downgraded below investment grade, the Manager or sub-advisors, as applicable, will take action that they believe to be advantageous to the Fund. The Fund has no limitations regarding the maturities of the debt securities it can buy.

In determining which debt securities to buy and sell, the Manager and the sub-advisors generally use a “top-down” or “bottom-up” investment strategy, or a combination of both strategies. The top-down fixed-income investment strategy is implemented as follows:

● Develop an overall investment strategy, including a portfolio duration target, by examining the current trends in the U.S. economy.

● 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.

● Determine the weightings of each security type by analyzing the difference in yield spreads between corporate and U.S. Government securities.

● Select specific debt securities within each security type.

● Review and monitor portfolio composition for changes in credit, risk-return profile and comparisons with benchmarks.

The bottom-up fixed-income investment strategy is implemented as follows:

● Search for eligible securities with a yield to maturity advantage versus a U.S. Government security with a similar maturity.

● Evaluate credit quality of the securities.

● Perform an analysis of the expected price volatility of the securities to changes in interest rates by examining actual price volatility between U.S. Government and non-U.S. Government securities.

The Fund may invest cash balances in other investment companies and may purchase and sell futures contracts to gain market exposure on cash balances or reduce market exposure in anticipation of liquidity needs.

Risk [Heading]

rr_RiskHeading

Principal Risks

Risk Narrative [Text Block]

rr_RiskNarrativeTextBlock

There is no assurance that the Fund will achieve its investment objective and you could lose part or all of your investment in the Fund. The Fund is not designed for investors who need an assured level of income and is intended to be a long-term investment. The Fund is not a complete investment program and may not be appropriate for all investors. Investors should carefully consider their own investment goals and risk tolerance before investing in the Fund. The principal risks of investing in the Fund are:

Credit Risk

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’s credit rating can cause the price of its bonds to go down.

Equity Investments Risk

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, REITs, ADRs and U.S. dollar denominated foreign stocks trading on U.S. exchanges. Such investments may expose the Fund to additional risks.

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 traded 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.

Foreign Exposure Risk

The Fund may invest in securities issued by foreign companies through ADRs and U.S. dollar-denominated foreign stocks trading on U.S. exchanges. ADRs 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. The Fund may also invest in U.S. dollar-denominated bonds issued by foreign companies or foreign governments. Non U.S. investments carry potential risks not associated with U.S. investments. Such risks include, but are not limited to: (1) currency exchange rate fluctuations, (2) political and financial instability, (3) less liquidity and greater volatility, (4) lack of uniform accounting, auditing and financial reporting standards; (5) increased price volatility; and (6) less government regulation and supervision of foreign stock exchanges, brokers and listed companies.

Futures Contracts Risk

Futures contracts are a type of derivative investment. A derivative refers to any financial instrument whose value is derived, at least in part, from the price of another security or a specified index, asset or rate. The use of derivatives presents risks different from, and possibly greater than, the risks associated with investing directly in traditional securities. Gains or losses in a derivative may be magnified and may be much greater than the derivatives original cost.

There may be an imperfect correlation between the changes in market value of the securities or other underlying assets held by the Fund and the prices of futures contracts. There may not be a liquid secondary market for the futures contract. When the Fund purchases or sells a futures contract, it is subject to daily variation margin calls that could be substantial in the event of adverse price movements. If the Fund has insufficient cash to meet daily variation margin requirements, it might need to sell securities at a time when such sales are disadvantageous.

Government-Sponsored Enterprises Risk

Securities held by the Fund that are issued by government-sponsored enterprises, such as the Federal National Mortgage Association (“Fannie Mae”), the Federal Home Loan Mortgage Corporation (“Freddie Mac”), 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.

Interest Rate Risk

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.

Investment Risk

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. Therefore, you may lose money by investing in the Fund.

Issuer Risk

The value of a security may decline for a number of reasons which directly relate to the issuer, such as management performance, financial leverage and reduced demand for the issuer’s goods or services, as well as the historical and prospective earnings of the issuer and the value of its assets.

Large Capitalization Companies Risk

The securities of large market capitalization companies may underperform other segments of the market because such companies may be less responsive to competitive challenges and opportunities and may be unable to attain high growth rates during periods of economic expansion.

Market Events Risk

Turbulence in financial markets and reduced liquidity in equity, credit and fixed-income markets may negatively affect many issuers worldwide which could adversely affect the Fund.

Market Risk

Market risks, including political, regulatory, market and economic developments, and developments that impact specific economic sectors, industries or segments of the market, can affect the value of the Fund’s shares. The Fund’s equity investments are subject to stock market risk, which involves the possibility that the value of the Fund’s investments in stocks will decline due to drops in the stock market. The Fund’s fixed-income investments are subject to the risk that the lack of liquidity or other adverse credit market conditions may hamper the Fund’s ability to purchase and sell the securities. From time to time, certain investments 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 holdings to meet redemption requests or other cash needs, the Fund may have to sell them at a loss.

Other Investment Companies Risk

The Fund may invest in shares of other registered investment companies, including open end funds and money market funds. To the extent that the Fund invests in shares of other registered investment companies, you will indirectly bear fees and expenses charged by the underlying funds in addition to the Fund’s direct fees and expenses and will be subject to the risks associated with investments in those funds.

Prepayment and Extension Risk

The Fund’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’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’s effective maturity and a decline in its price.

Securities Selection Risk

Securities selected by the Manager or 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.

Small and Medium Capitalization Companies Risk

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.

U.S. Government Securities Risk

A security backed by the U.S. Treasury or the full faith and credit of the United States is guaranteed only as to the timely payment of interest and principal when held to maturity. The market prices for such securities are not guaranteed and will fluctuate. They are also subject to credit risk and interest rate risk.

Value Stocks Risk

Value stocks are subject to the risk that their intrinsic value may never be realized by the market or that their prices may 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.

Risk Lose Money [Text]

rr_RiskLoseMoney

There is no assurance that the Fund will achieve its investment objective and you could lose part or all of your investment in the Fund.

Risk Not Insured Depository Institution [Text]

rr_RiskNotInsuredDepositoryInstitution

An investment in the Fund is not a deposit of a bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.

Bar Chart and Performance Table [Heading]

rr_BarChartAndPerformanceTableHeading

Fund Performance

Performance Narrative [Text Block]

rr_PerformanceNarrativeTextBlock

The bar chart and table below provide an indication of risk by showing how the Fund’s performance has varied from year to year. The table shows how the Fund’s performance compares to the Russell 1000® Value Index, which is the Fund’s primary benchmark. The table also shows how the Fund’s returns compare to the Barclays® Capital U.S. Aggregate Bond Index, which tracks the performance of fixed-rate debt securities. The Balanced Composite Index is composed of the Russell 1000 Value Index (60%) and the Barclays Capital U.S. Aggregate Bond Index (40%) to reflect the Fund’s allocation of its assets between equity securities and fixed-income securities. The Lipper® MTAG Funds Index shows how the Fund’s performance compares to a composite of mutual funds with similar investment objectives. You may obtain updated performance information on the Fund’s website at www.americanbeaconfunds.com. Past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future.

Performance Information Illustrates Variability of Returns [Text]

rr_PerformanceInformationIllustratesVariabilityOfReturns

The bar chart and table below provide an indication of risk by showing how the Fund's performance has varied from year to year.

Performance Availability Website Address [Text]

rr_PerformanceAvailabilityWebSiteAddress

www.americanbeaconfunds.com

Performance Past Does Not Indicate Future [Text]

rr_PerformancePastDoesNotIndicateFuture

Past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future.

Bar Chart [Heading]

rr_BarChartHeading

Total Return for the Calendar Year Ended 12/31 of each Year

Bar Chart Closing [Text Block]

rr_BarChartClosingTextBlock

Highest Quarterly Return:	13.75%
(1/1/03 through 12/31/12)	(2nd Quarter 2003)
Lowest Quarterly Return:	-11.03%
(1/1/03 through 12/31/12)	(4th Quarter 2008)

Highest Quarterly Return, Label

rr_HighestQuarterlyReturnLabel

Highest Quarterly Return:

Highest Quarterly Return, Date

rr_BarChartHighestQuarterlyReturnDate

Jun. 30, 2003

Highest Quarterly Return

rr_BarChartHighestQuarterlyReturn

13.75%

Lowest Quarterly Return, Label

rr_LowestQuarterlyReturnLabel

Lowest Quarterly Return:

Lowest Quarterly Return, Date

rr_BarChartLowestQuarterlyReturnDate

Dec. 31, 2008

Lowest Quarterly Return

rr_BarChartLowestQuarterlyReturn

(11.03%)

Performance Table Heading

rr_PerformanceTableHeading

Average Annual Total Returns For the periods ended December 31, 2012

Russell 1000 Value Index

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

17.51%

5 Years

rr_AverageAnnualReturnYear05

0.59%

10 Years

rr_AverageAnnualReturnYear10

7.38%

Barclays Capital U.S. Aggregate Bond Index

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

4.21%

5 Years

rr_AverageAnnualReturnYear05

5.95%

10 Years

rr_AverageAnnualReturnYear10

5.18%

Balanced Composite Index

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

12.17%

5 Years

rr_AverageAnnualReturnYear05

3.21%

10 Years

rr_AverageAnnualReturnYear10

6.83%

Lipper MTAG Funds Index

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

(13.67%)

5 Years

rr_AverageAnnualReturnYear05

2.65%

10 Years

rr_AverageAnnualReturnYear10

6.96%

AMR Class

Risk/Return:

rr_RiskReturnAbstract

Management fees

rr_ManagementFeesOverAssets

0.22%

Distribution and/or service (12b-1) fees

rr_DistributionAndService12b1FeesOverAssets

none

Other expenses

rr_OtherExpensesOverAssets

0.10%

Acquired Fund Fees and Expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.01%

Total annual fund operating expenses

rr_ExpensesOverAssets

0.33%

^[1]

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

34

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

106

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

186

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

418

Annual Return 2003

rr_AnnualReturn2003

24.51%

Annual Return 2004

rr_AnnualReturn2004

13.36%

Annual Return 2005

rr_AnnualReturn2005

6.76%

Annual Return 2006

rr_AnnualReturn2006

14.14%

Annual Return 2007

rr_AnnualReturn2007

2.35%

Annual Return 2008

rr_AnnualReturn2008

(24.66%)

Annual Return 2009

rr_AnnualReturn2009

20.99%

Annual Return 2010

rr_AnnualReturn2010

12.12%

Annual Return 2011

rr_AnnualReturn2011

2.06%

Annual Return 2012

rr_AnnualReturn2012

14.52%

1 Year

rr_AverageAnnualReturnYear01

14.52%

5 Years

rr_AverageAnnualReturnYear05

3.62%

10 Years

rr_AverageAnnualReturnYear10

7.72%

[1] The Total Annual Fund Operating Expenses do not correlate to the ratio of expenses to average net assets provided in the Fund's Financial Highlights table, which reflects the operating expenses of the Fund and does not include Acquired Fund Fees and Expenses.

XML

Label

Element

Value

Risk/Return:

rr_RiskReturnAbstract

Risk/Return [Heading]

rr_RiskReturnHeading

American Beacon International Equity Fund

Objective [Heading]

rr_ObjectiveHeading

Investment Objective

Objective, Primary [Text Block]

rr_ObjectivePrimaryTextBlock

The Fund’s investment objective is long-term capital appreciation.

Expense [Heading]

rr_ExpenseHeading

Fees and Expenses of the Fund

Expense Narrative [Text Block]

rr_ExpenseNarrativeTextBlock

This table describes the fees and expenses that you may pay if you buy and hold shares of the Fund.

Shareholder Fees Caption [Text]

rr_ShareholderFeesCaption

Shareholder Fees (fees paid directly from your investment)

Operating Expenses Caption [Text]

rr_OperatingExpensesCaption

Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)

Portfolio Turnover [Heading]

rr_PortfolioTurnoverHeading

Portfolio Turnover

Portfolio Turnover [Text Block]

rr_PortfolioTurnoverTextBlock

The Fund pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when fund shares are held in a taxable account. These costs, which are not reflected in annual fund operating expenses or in the example, affect the Fund’s performance. During the most recent fiscal year, the Fund’s portfolio turnover rate was 60% of the average value of its portfolio.

Portfolio Turnover, Rate

rr_PortfolioTurnoverRate

60.00%

Expenses Not Correlated to Ratio Due to Acquired Fund Fees [Text]

rr_ExpensesNotCorrelatedToRatioDueToAcquiredFundFees

The Total Annual Fund Operating Expenses do not correlate to the ratio of expenses to average net assets provided in the Fund's Financial Highlights table, which reflects the operating expenses of the Fund and does not include Acquired Fund Fees and Expenses.

Expense Example [Heading]

rr_ExpenseExampleHeading

Example

Expense Example Narrative [Text Block]

rr_ExpenseExampleNarrativeTextBlock

This Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return each year and that the Fund’s operating expenses remain the same. Although your actual costs may be higher or lower, based on these assumptions, your costs would be:

Strategy [Heading]

rr_StrategyHeading

Principal Investment Strategies

Strategy Narrative [Text Block]

rr_StrategyNarrativeTextBlock

Under normal circumstances, at least 80% of the Fund’s net assets (plus the amount of any borrowings for investment purposes) are invested in common stocks and securities convertible into common stocks (collectively, “stocks”) of issuers based in at least three different countries located outside the United States. The Fund will primarily invest in countries comprising the Morgan Stanley Capital International® Europe Australasia Far East Index (“MSCI EAFE Index”). The MSCI EAFE Index is comprised of equity securities of companies from various industrial sectors whose primary trading markets are located outside the United States. Companies included in the MSCI EAFE Index are selected from among the larger capitalization companies in these markets. The Fund may invest in companies of all market capitalizations. The Fund may use futures contracts and foreign currency forward contracts, including non-deliverable forwards ("NDFs") contracts, as a hedge against foreign currency fluctuations.

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 reducing volatility and downside risk.

The sub-advisors select stocks that, in their opinion, have most or all of the following characteristics (relative to that stock’s country, sector or industry):

u above-average return on equity or earnings growth potential,

u below-average price to earnings or price to cash flow ratio,

u below-average price to book value ratio, and

u above-average dividend yields.

The sub-advisors may consider potential changes in currency exchange rates when choosing stocks. Each of the 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. A sub-advisor may trade forward foreign currency contracts, including NDF contracts, or currency futures in an attempt to reduce the Fund’s risk exposure to adverse fluctuations in currency exchange rates.

The Fund may invest cash balances in money market funds and may purchase and sell futures contracts to gain market exposure on cash balances or reduce market exposure in anticipation of liquidity needs.

The Fund may lend its securities to broker-dealers and other institutions to earn additional income.

Risk [Heading]

rr_RiskHeading

Principal Risks

Risk Narrative [Text Block]

rr_RiskNarrativeTextBlock

There is no assurance that the Fund will achieve its investment objective and you could lose part or all of your investment in the Fund. The Fund is not designed for investors who need an assured level of income and is intended to be a long-term investment. The Fund is not a complete investment program and may not be appropriate for all investors. Investors should carefully consider their own investment goals and risk tolerance before investing in the Fund. The principal risks of investing in the Fund are:

Currency Risk

Foreign currencies may decline in value relative to the U.S. dollar and affect the Fund’s investments in foreign (non-U.S.) currencies or in securities that trade in, and receive revenues in, or in derivatives that provide exposure to, foreign (non-U.S.) currencies.

Equity Investments Risk

Equity securities generally are subject to market risk. The Fund’s investments in equity securities may include common stocks and securities convertible into or exchangeable for common stocks. Investing in such securities may expose the Fund to additional risk. 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 movement in interest rates.  In addition, convertible securities are subject to risk that the credit standing of the issuer may have an effect on the security’s investment value.

Foreign Investing Risk

Non U.S. investments carry potential risks not associated with U.S. investments. Such risks include, but are not limited to: (1) currency exchange rate fluctuations, (2) political and financial instability, (3) less liquidity and greater volatility, (4) lack of uniform accounting, auditing and financial reporting standards, (5) increased price volatility; (6) less government regulation and supervision of foreign stock exchanges, brokers and listed companies; and (7) delays in transaction settlement in some foreign markets.

Futures Contracts and Foreign Currency Forward Contracts Risk

Futures contracts and foreign currency forward contracts, including NDFs, are derivative instruments pursuant to a contract with a counterparty to pay a fixed price for an agreed amount of securities or other underlying assets at an agreed date or to buy or sell a specific currency at a future date at a price set at the time of the contract. The use of such derivative instruments may expose the Fund to additional risks that it would not be subject to if they invested directly in the securities underlying those derivatives. Futures contracts may experience potentially dramatic price changes (losses) and imperfect correlations between the price of the contract and the underlying security, index or currency which will increase the volatility of the Fund and may involve a small investment of cash relative to the magnitude of the risk assumed. There can be no assurance that any strategy used will succeed. Not all forward contracts, including NDFs, require a counterparty to post collateral, which may expose the Fund to greater losses in the event of a default by a counterparty.

Hedging Risk

Gains or losses from positions in hedging instruments may be much greater than the instrument’s original cost. The counterparty may be unable to honor its financial obligation to a Fund. In addition, the Manager or a sub-advisor may be unable to close the transaction at the time it would like or at the price it believes the security is currently worth.

Investment Risk

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. Therefore, you may lose money by investing in the Fund.

Issuer Risk

The value of a security may decline for a number of reasons which directly relate to the issuer, such as management performance, financial leverage and reduced demand for the issuer’s goods or services, as well as the historical and prospective earnings of the issuer and the value of its assets.

Large Capitalization Companies Risk

The securities of large market capitalization companies may underperform other segments of the market because such companies may be less responsive to competitive challenges and opportunities and may be unable to attain high growth rates during periods of economic expansion.

Market Events Risk

Turbulence in financial markets and reduced liquidity in equity, credit and fixed-income markets may negatively affect many issuers worldwide which could adversely affect the Fund.

Market Risk

Market risks, including political, regulatory, market and economic developments and developments that impact specific economic sectors, industries or segments of the market, can affect the value of a Fund’s shares.  Equity investments are subject to stock market risk, which involves the possibility that the value of the Fund’s investments in stocks of a particular country will decline due to drops in the stock market due to general market, regulatory, political and economic conditions.   From time to time, certain investments 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 holdings to meet redemption requests or other cash needs, the Fund may have to sell them at a loss.

Market Timing Risk

Because specific securities in which a Fund may invest, it could be  subject to the risk of market timing activities by shareholders. Some examples of these types of securities are high-yield and foreign securities. The limited trading activity of some high-yield securities may result in market prices that do not reflect the true market value of these securities.  A Fund generally prices foreign securities using their closing prices from the foreign markets in which they trade, typically prior to the Fund’s calculation of its net asset value( “NAV”). These prices may be affected by events that occur after the close of a foreign market but before the Fund prices its shares. In such instances, the Fund may fair value foreign securities. However, some investors may engage in frequent short-term trading in the Fund to take advantage of any price differentials that may be reflected in the net asset value of the Fund’s shares. There is no assurance that fair valuation of securities can reduce or eliminate market timing. While the Manager monitors trading in Fund shares, there is no guarantee that it can detect all market timing activities.

Securities Lending Risk

To the extent the Fund lends its securities, it may be subject to the following risks. Borrowers of the Fund’s securities typically provide collateral in the form of cash that is reinvested in securities. The securities in which the collateral is invested may not perform sufficiently to cover the return collateral payments owed to borrowers. In addition, delays may occur in the recovery of securities from borrowers, which could interfere with the Fund’s ability to vote proxies or to settle transactions.

Securities Selection Risk

Securities selected by the Manager or 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.

Value Stocks Risk

Value stocks are subject to the risk that their intrinsic value may never be realized by the market or that their prices may 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.

Risk Lose Money [Text]

rr_RiskLoseMoney

There is no assurance that the Fund will achieve its investment objective and you could lose part or all of your investment in the Fund.

Risk Not Insured Depository Institution [Text]

rr_RiskNotInsuredDepositoryInstitution

An investment in the Fund is not a deposit of a bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.

Bar Chart and Performance Table [Heading]

rr_BarChartAndPerformanceTableHeading

Fund Performance

Performance Narrative [Text Block]

rr_PerformanceNarrativeTextBlock

The bar chart and table below provide an indication of risk by showing 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® International Funds Index, a composite of mutual funds comparable to the Fund. You may obtain updated performance information on the Fund’s website at www.americanbeaconfunds.com. Past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future.

Performance Information Illustrates Variability of Returns [Text]

rr_PerformanceInformationIllustratesVariabilityOfReturns

The bar chart and table below provide an indication of risk by showing how the Fund's performance has varied from year to year.

Performance Availability Website Address [Text]

rr_PerformanceAvailabilityWebSiteAddress

www.americanbeaconfunds.com

Performance Past Does Not Indicate Future [Text]

rr_PerformancePastDoesNotIndicateFuture

Past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future.

Bar Chart [Heading]

rr_BarChartHeading

Total Return for the Calendar Year Ended 12/31 of each Year

Bar Chart Closing [Text Block]

rr_BarChartClosingTextBlock

Highest Quarterly Return:	25.07%
(1/1/03 through 12/31/12)	(2nd Quarter 2009)
Lowest Quarterly Return:	-21.60%
(1/1/03 through 12/31/12)	(3rd Quarter 2011)

Highest Quarterly Return, Label

rr_HighestQuarterlyReturnLabel

Highest Quarterly Return:

Highest Quarterly Return, Date

rr_BarChartHighestQuarterlyReturnDate

Jun. 30, 2009

Highest Quarterly Return

rr_BarChartHighestQuarterlyReturn

25.07%

Lowest Quarterly Return, Label

rr_LowestQuarterlyReturnLabel

Lowest Quarterly Return:

Lowest Quarterly Return, Date

rr_BarChartLowestQuarterlyReturnDate

Sep. 30, 2011

Lowest Quarterly Return

rr_BarChartLowestQuarterlyReturn

(21.60%)

Performance Table Heading

rr_PerformanceTableHeading

Average Annual Total Returns For the periods ended December 31, 2012

MCSI EAFE Index

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

17.32%

5 Years

rr_AverageAnnualReturnYear05

(3.69%)

10 Years

rr_AverageAnnualReturnYear10

8.21%

Lipper International Funds Index

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

19.70%

5 Years

rr_AverageAnnualReturnYear05

(2.81%)

10 Years

rr_AverageAnnualReturnYear10

8.81%

AMR Class

Risk/Return:

rr_RiskReturnAbstract

Redemption Fee (as a percentage of Amount Redeemed)

rr_RedemptionFeeOverRedemption

(2.00%)

Management fees

rr_ManagementFeesOverAssets

0.32%

Distribution and/or service (12b-1) fees

rr_DistributionAndService12b1FeesOverAssets

none

Other expenses

rr_OtherExpensesOverAssets

0.13%

Acquired Fund Fees and Expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.01%

Total annual fund operating expenses

rr_ExpensesOverAssets

0.46%

^[1]

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

47

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

147

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

257

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

578

Annual Return 2003

rr_AnnualReturn2003

42.21%

Annual Return 2004

rr_AnnualReturn2004

24.30%

Annual Return 2005

rr_AnnualReturn2005

11.36%

Annual Return 2006

rr_AnnualReturn2006

26.66%

Annual Return 2007

rr_AnnualReturn2007

10.01%

Annual Return 2008

rr_AnnualReturn2008

(40.40%)

Annual Return 2009

rr_AnnualReturn2009

30.06%

Annual Return 2010

rr_AnnualReturn2010

7.09%

Annual Return 2011

rr_AnnualReturn2011

(11.35%)

Annual Return 2012

rr_AnnualReturn2012

21.90%

1 Year

rr_AverageAnnualReturnYear01

21.90%

5 Years

rr_AverageAnnualReturnYear05

(2.15%)

10 Years

rr_AverageAnnualReturnYear10

9.42%

[1] The Total Annual Fund Operating Expenses do not correlate to the ratio of expenses to average net assets provided in the Fund's Financial Highlights table, which reflects the operating expenses of the Fund and does not include Acquired Fund Fees and Expenses.

XML

Document and Entity Information	0 Months Ended
	Feb. 28, 2013
Risk/Return:
Document Type	485BPOS
Document Period End Date	Feb. 28, 2013
Registrant Name	American Beacon Funds
Central Index Key	0000809593
Amendment Flag	false
Document Creation Date	Feb. 28, 2013
Document Effective Date	Feb. 28, 2013
Prospectus Date	Feb. 28, 2013

XML

American Beacon Mid-Cap Value Fund | American Beacon Mid-Cap Value Fund

American Beacon Mid-Cap Value Fund

Investment Objective

The Fund’s investment objective is long-term capital appreciation and current income.

Fees and Expenses of the Fund

This table describes the fees and expenses that you may pay if you buy and hold shares of the Fund. You may qualify for sales discounts if you and your eligible family members invest, or agree to invest in the future, at least $50,000 in 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 101 of the Prospectus and “Additional Purchase and Sale Information for A Class Shares” on page 78 of the statement of additional information.

Shareholder Fees (fees paid directly from your investment)

Shareholder Fees American Beacon Mid-Cap Value Fund	A Class	C Class	Y Class	Advisor Class	Institutional Class	Investor Class
Maximum sales charge imposed on purchases (as a percentage of offering price)	5.75%	none	none	none	none	none
Maximum deferred sales charge load (as a percentage of the lower of original offering price or redemption proceeds)	none	1.00%	none	none	none	none

Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)

Annual Fund Operating Expenses American Beacon Mid-Cap Value Fund		A Class	C Class	Y Class	Advisor Class	Institutional Class	Investor Class
Management fees		0.58%	0.58%	0.58%	0.58%	0.58%	0.58%
Distribution and/or service (12b-1) fees		0.25%	1.00%	none	0.25%	none	none
Other expenses		0.78%	0.88%	0.70%	1.16%	0.48%	0.86%
Acquired Fund Fees and Expenses		0.01%	0.01%	0.01%	0.01%	0.01%	0.01%
Total annual fund operating expenses	[1]	1.62%	2.47%	1.29%	2.00%	1.07%	1.45%
Expense Reduction and Reimbursement		0.12%	0.22%	0.20%	0.50%	0.08%	0.21%
Total annual fund operating expenses after expense reduction and reimbursement	[2]	1.50%	2.25%	1.09%	1.50%	0.99%	1.24%

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 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:

Expense Example American Beacon Mid-Cap Value Fund (USD $)	1 year	3 years	5 years	10 years
A Class	719	1,046	1,396	2,379
C Class	328	749	1,296	2,790
Y Class	111	390	689	1,540
Advisor Class	153	579	1,032	2,287
Institutional Class	101	332	582	1,298
Investor Class	126	438	772	1,716

Assuming no redemption of shares:

Expense Example No Redemption (USD $)	1 year	3 years	5 years	10 years
American Beacon Mid-Cap Value Fund C Class	228	749	1,296	2,790

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 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 87% of the average value of its portfolio.

Principal Investment Strategies

Under normal circumstances, at least 80% of the Fund’s net assets (plus the amount of any borrowings for investment purposes) are invested in equity securities of middle market capitalization U.S. companies. These companies have market capitalizations within the market capitalization range of the companies in the Russell Midcap® Index at the time of investment. As of December 31, 2012 the market capitalizations of the companies in the Russell Midcap Index ranged from $313 million to $25 billion. 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 (“ADRs”) and U.S. dollar-denominated foreign stocks trading on U.S. exchanges (collectively referred to as “stocks”).

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 reducing volatility and downside risk.

In general, the sub-advisors select stocks that, in their opinion, have most or all of the following characteristics (relative to the Russell Midcap Index):

u above-average earnings growth potential,

u below-average price to earnings ratio,

u below-average price to book value ratio, and

u above-average dividend yields.

One sub-advisor invests in medium-sized companies with low price to earnings and price to book value ratios and high dividend yields in relation to the Russell Midcap Index. Through extensive research and meetings with company management teams, the sub-advisor seeks to identify companies that not only possess these three characteristics, but that also exhibit high or improving profitability translating into earnings growth above that of the overall Russell Midcap Index. The sub-advisor’s portfolio will generally consist of 35 to 45 stocks.

The second sub-advisor invests in medium-sized companies and intends to maintain a concentrated portfolio of 30 to 40 stocks selected from the most undervalued or “deep” value portion of its investment universe. That sub-advisor looks for companies within that universe that sell for a low price relative to normal earnings (with “normal earnings” defined as a 5 year estimate of what the company should earn in a normal environment based on research of the company’s history and the history of its industry).

The third sub-advisor utilizes a classic value-driven philosophy based on the belief that leading businesses selling at a discount to fair value have the potential to generate excess returns. The strategy focuses on stocks that are temporarily out of favor in the market; specifically, companies with higher returns on capital, free cash flow and strong balance sheets. These companies often dominate a particular industry niche, generally have significant barriers to entry and, as a result, are able to perpetuate a higher return on capital over time.

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 security 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.

The Fund may invest cash balances in money market funds and may purchase and sell futures contracts to gain market exposure on cash balances or reduce market exposure in anticipation of liquidity needs.

Principal Risks

There is no assurance that the Fund will achieve its investment objective and you could lose part or all of your investment in the Fund. The Fund is not designed for investors who need an assured level of income and is intended to be a long-term investment. The Fund is not a complete investment program and may not be appropriate for all investors. Investors should carefully consider their own investment goals and risk tolerance before investing in the Fund. The principal risks of investing in the Fund are:

Equity Investments Risk

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, REITs, ADRs, and U.S. dollar-denominated foreign stocks traded on U.S. exchanges. Such investments may expose the Fund to additional risks.

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 traded 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.

Foreign Exposure Risk

The Fund may invest in securities issued by foreign companies through ADRs and U.S. dollar-denominated foreign stocks trading on U.S. exchanges. ADRs 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. Non-U.S. investments carry potential risks not associated with U.S. investments. Such risks include, but are not limited to: (1) currency exchange rate fluctuations, (2) political and financial instability, (3) less liquidity and greater volatility, (4) lack of uniform accounting, auditing and financial reporting standards, (5) increased price volatility, and (6) less government regulation and supervision of foreign stock exchanges, brokers and listed companies.

Futures Contracts Risk

Futures contracts are a type of derivative investment. A derivative refers to any financial instrument whose value is derived, at least in part, from the price of another security or a specified index, asset or rate. The use of derivatives presents risks different from, and possibly greater than, the risks associated with investing directly in traditional securities. Gains or losses in a derivative may be magnified and may be much greater than the derivatives original cost.

There may be an imperfect correlation between the changes in market value of the securities held by the Fund and the prices of futures contracts. There may not be a liquid secondary market for the futures contract. When the Fund purchases or sells a futures contract, it is subject to daily variation margin calls that could be substantial in the event of adverse price movements. If the Fund has insufficient cash to meet daily variation margin requirements, it might need to sell securities at a time when such sales are disadvantageous.

High Portfolio Turnover Risk

Portfolio turnover is a measure of a Fund’s trading activity over a one-year period. A portfolio turnover rate of 100% would indicate that a Fund sold and replaced the entire value of its securities holdings during the period. High portfolio turnover could increase a Fund’s transaction costs and possibly have a negative impact on performance. Frequent trading by a Fund could also result in increased short-term capital gain distributions to shareholders, which are taxable as ordinary income.

Investment Risk

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. Therefore, you may lose money by investing in the Fund.

Issuer Risk

The value of a security may decline for a number of reasons which directly relate to the issuer, such as management performance, financial leverage and reduced demand for the issuer’s goods or services, as well as the historical and prospective earnings of the issuer and the value of its assets.

Market Events Risk

Turbulence in financial markets and reduced liquidity in equity, credit and fixed-income markets may negatively affect many issuers worldwide which could adversely affect the Fund.

Market Risk

Market risks, including political, regulatory, market and economic developments, and developments that impact specific economic sectors, industries or segments of the market, can affect the value of the Fund’s shares. The Fund’s equity investments are subject to stock market risk, which  involves the possibility that the value of the Fund’s investments in stocks will decline due to drops in the stock market.  From time to time, certain investments 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 holdings to meet redemption requests or other cash needs, the Fund may have to sell them at a loss.

Mid-Capitalization Companies Risk

Investing in the securities of medium capitalization companies involves greater risk and the possibility of greater price volatility than investing in larger capitalization companies and more established companies, since medium-sized companies may have limited operating history, product lines and financial resources, the securities of these companies may lack sufficient market liquidity and can be sensitive to expected changes in interest rates, borrowing costs and earnings.

Securities Selection Risk

Securities selected by the Manager or 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.

Value Stocks Risk

Value stocks are subject to the risk that their intrinsic value may never be realized by the market or that their prices may 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.

Fund Performance

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® Mid-Cap Value Funds Index, a composite of mutual funds comparable to the Fund.

The chart and the table below show the performance of the Fund’s Institutional Class shares for all periods. The Fund began operations of Institutional Class shares on November 30, 2005, Investor Class shares on March 1, 2006, Advisor Class shares on June 30, 2007, 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 AMR Class of the Fund, which began offering shares on June 30, 2004 and is not offered in this prospectus, is shown for the Institutional Class shares before the date such class was first offered. For the Investor Class, performance results from June 30, 2004 through November 30, 2005 are for the AMR Class and performance results from November 30, 2005 through March 1, 2006 are for the Institutional Class. For the Advisor Class, performance results from June 30, 2004 to November 30, 2005 are for the AMR Class, performance results from November 30, 2005 through February 28, 2006 are for the Institutional Class and performance results from March 1, 2006 to June 30, 2007 are for the Investor Class. For Y Class, A Class and C Class shares, performance results from June 30, 2004 to November 30, 2005 are for the AMR Class and performance results from November 30, 2005 to the inception of the Y Class, A Class and C Class shares are for the Institutional Class.

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.

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.

Total Return for the Calendar Year Ended 12/31 of each Year

Calendar year total returns for Institutional Class shares

Highest Quarterly Return:	24.36%
(1/1/05 through 12/31/12)	(3rd Quarter 2009)
Lowest Quarterly Return:	-21.30%
(1/1/05 through 12/31/12)	(4th Quarter 2008)

Average Annual Total Returns For the periods ended December 31, 2012

Average Annual Returns American Beacon Mid-Cap Value Fund		1 Year	5 Years	Since Inception	Inception Date
Institutional Class	[1]	16.00%	5.00%	6.82%	Nov. 30, 2005
A Class	[1]	15.45%	4.55%	6.50%	May 17, 2010
C Class	[1]	14.64%	4.21%	6.29%	Sep. 01, 2010
Y Class	[1]	15.98%	4.97%	6.80%	Mar. 01, 2010
Advisor Class	[1]	15.43%	4.59%	6.51%	Jun. 29, 2007
Investor Class	[1]	15.71%	4.84%	6.67%	Feb. 28, 2006
After Taxes on Distributions Institutional Class	[1]	14.54%	4.55%	5.38%
After Taxes on Distributions and Sales Institutional Class	[1]	11.39%	4.17%	5.23%
Russell Midcap Value Index	[1]	18.51%	3.79%	7.54%
Lipper Mid-Cap Value Funds Index	[1]	18.32%	2.98%	6.23%

[1] The Total Annual Fund Operating Expenses do not correlate to the ratio of expenses to average net assets provided in the Fund's Financial Highlights table, which reflects the operating expenses of the Fund and does not include Acquired Fund Fees and Expenses.

[2] The Manager has contractually agreed to reduce and/or reimburse the A Class, C Class, Y Class, Advisor Class, Institutional Class and Investor Class of the Fund for Other Expenses, as applicable, through February 28, 2014 to the extent that Total Annual Fund Operating Expenses exceed 1.49% for the A Class, 2.24% for the C Class, 1.08% for the Y Class, 1.49% for the Advisor Class, 0.98% for the Institutional Class and 1.23% for the Investor 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.

[1] 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.

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American Beacon Short-Term Bond Fund | American Beacon Short-Term Bond Fund

American Beacon Short-Term Bond Fund

Investment Objective

The Fund’s investment objective is income and capital appreciation.

Fees and Expenses of the Fund

This table describes the fees and expenses that you may pay if you buy and hold shares of the Fund. You may qualify for sales discounts if you and your eligible family members invest, or agree to invest in the future, at least $50,000 in 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 101 of the Prospectus and “Additional Purchase and Sale Information for A Class Shares” on page 78 of the statement of additional information.

Shareholder fees (fees paid directly from your investment)

Shareholder Fees American Beacon Short-Term Bond Fund	A Class		C Class	Y Class	Institutional Class	Investor Class
Maximum sales charge imposed on purchases (as a percentage of offering price)	2.50%		none	none	none	none
Maximum deferred sales charge load (as a percentage of the lower of original offering price or redemption proceeds)	0.50%	[1]	1.00%	none	none	none

Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)

Annual Fund Operating Expenses American Beacon Short-Term Bond Fund		A Class	C Class	Y Class	Institutional Class	Investor Class
Management fees		0.20%	0.20%	0.20%	0.20%	0.20%
Distribution and/or service (12b-1) fees		0.25%	1.00%	none	none	none
Other expenses		0.67%	0.70%	0.52%	0.17%	0.69%
Acquired Fund Fees and Expenses		none	none	none	none	none
Total annual fund operating expenses	[1]	1.12%	1.90%	0.72%	0.37%	0.89%
Expense Reduction and Reimbursement		0.27%	0.30%	0.08%		0.10%
Total annual fund operating expenses after expense reduction and reimbursement	[2]	0.85%	1.60%	0.64%		0.79%

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 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:

Shareholder fees

(fees paid directly from your investment)

Expense Example American Beacon Short-Term Bond Fund (USD $)	1 year	3 years	5 years	10 years
A Class	335	571	826	1,555
C Class	263	569	1,000	2,199
Y Class	65	222	392	887
Institutional Class	38	119	207	467
Investor Class	81	275	485	1,089

Assuming no redemption of shares:

Expense Example No Redemption (USD $)	1 year	3 years	5 years	10 years
American Beacon Short-Term Bond Fund C Class	163	569	1,000	2,199

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 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 18% of the average value of its portfolio.

Principal Investment Strategies

Under normal circumstances, the Fund invests at least 80% of its net assets (plus the amount of any borrowings for investment purposes) in obligations of the U.S. Government, its agencies and instrumentalities, including U.S. 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, master demand notes, loan participation interests, medium-term notes and funding agreements, mortgage-backed securities, asset-backed securities, Yankeedollar and Eurodollar bank certificates of deposit, time deposits, bankers’ acceptances and other notes. These types of obligations are commonly referred to as fixed-income securities or bonds and may include foreign bonds. The Fund seeks capital appreciation by investing in corporate issues whose relative value is expected to increase over time.

Currently, the Manager is the sole investment advisor to the Fund. In determining which securities to buy and sell, the Manager employs a top-down fixed-income investment strategy, as follows:

● Develop an overall investment strategy, including a portfolio duration target, by examining the current trends in the U.S. economy.

● 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.

● Determine the weightings of each security type by analyzing the difference in yield spreads between corporate and U.S. Government securities.

● Select specific debt securities within each security type.

● Review and monitor portfolio composition for changes in credit, risk-return profile and comparisons with benchmarks.

The Fund will only buy debt securities that are determined by the Manager to be investment grade at the time of purchase. If an investment held by the Fund is downgraded below investment grade, the Manager will take action that it believes to be advantageous to the Fund. Under normal circumstances, the Fund seeks to maintain a duration of one to three years. A duration of “one year” means that a security’s price would be expected to decrease by approximately 1% with a 1% increase in interest rates.

The Fund may also invest cash balances in other investment companies to gain market exposure on cash balances or reduce market exposure in anticipation of liquidity needs.

Principal Risks

There is no assurance that the Fund will achieve its investment objective and you could lose part or all of your investment in the Fund. The Fund is not 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:

Credit Risk

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’s credit rating can cause the price of its bonds to go down.

Foreign Investing Risk

Non-U.S. investments carry potential risks not associated with U.S. investments. Such risks include, but are not limited to: (1) currency exchange rate fluctuations, (2) political and financial instability, (3) less liquidity and greater volatility, (4) lack of uniform accounting, auditing and financial reporting standards, (5) increased price volatility, (6) less government regulation and supervision of foreign stock exchanges, brokers and listed companies, and (7) delays in transaction settlement in some foreign markets.

Government-Sponsored Enterprises Risk

Securities held by the Fund that are issued by government-sponsored enterprises, such as the Federal Home Loan Bank ("FHLB"), Federal National Mortgage Association (“Fannie Mae”), the Federal Home Loan Mortgage Corporation (“Freddie Mac”), 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.

Interest Rate Risk

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.

Investment Risk

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. Therefore, you may lose money by investing in the Fund.

Issuer Risk

The value of a security may decline for a number of reasons which directly relate to the issuer, such as management performance, financial leverage and reduced demand for the issuer’s goods or services, as well as the historical and prospective earnings of the issuer and the value of its assets.

Market Events Risk

Turbulence in financial markets and reduced liquidity in credit and fixed-income markets may negatively affect many issuers worldwide which could adversely affect the Fund.

Market Risk

Market risks, including political, regulatory, market and economic developments, and developments that impact specific economic sectors, industries or segments of the market, can affect the value of the Fund’s shares. The Fund’s fixed-income investments are subject to the risk that the lack of liquidity or other adverse credit market conditions may hamper the Fund’s ability to purchase and sell the securities.  From time to time, certain investments 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 such holdings to meet redemption requests or other cash needs, the Fund may have to sell them at a loss.

Other Investment Companies Risk

The Fund may invest in shares of other registered investment companies, including open-end funds, and money market funds. To the extent that the Fund invests in shares of other registered investment companies, you will indirectly bear fees and expenses charged by the underlying funds in addition to the Fund’s direct fees and expenses and will be subject to the risks associated with investments in those funds.

Prepayment and Extension Risk

The Fund’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’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’s effective maturity and a decline in its price.

Securities Selection Risk

Securities selected for the Fund may not perform to expectations. This could result in the Fund’s underperformance compared to other funds with similar investment objectives.

U.S. Government Securities Risk

A security backed by the U.S. Treasury or the full faith and credit of the United States is guaranteed only as to the timely payment of interest and principal when held to maturity. The market prices for such securities are not guaranteed and will fluctuate. They are also subject to credit risk and interest rate.

Fund Performance

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 Short Investment Grade Bond Funds Index, a composite of mutual funds comparable to the Fund. Performance shown in the chart and tables below reflects the Fund’s one-time receipt in December 2006 of class action settlement proceeds that were related to investment activity in 2002. The Fund’s performance for all periods that include December 2006 was significantly higher than it would have been absent receipt of the settlement proceeds.

The chart and the table below show the performance of the Fund’s Institutional Class shares for all periods. The Fund began operations of Investor Class shares on August 1, 1994, 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 Institutional Class is shown for Y Class shares and the performance of the Investor Class is shown for the A Class and C Class shares prior to the dates such new share classes were first offered. In each case, the newer share classes would have had similar annual returns to the older share classes because the shares are invested in the same portfolio securities. However, because the older share classes had lower expenses, their performance was better than the newer share 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.

Sales charges are not reflected in the bar chart and table below. If those charges were included, returns for A Class shares would be less than those shown.

Total Return for the Calendar Year Ended 12/31 of each year

Calendar year total returns for Institutional Class shares

Highest Quarterly Return:	2.23%
(1/1/03 through 12/31/12)	(4th Quarter 2008)
Lowest Quarterly Return:	-1.18%
(1/1/03) through 12/31/12)	(3rd Quarter 2008)

Average Annual Total Returns For the periods ended December 31, 2012

Average Annual Returns American Beacon Short-Term Bond Fund		1 Year	5 Years	10 Years	Inception Date
Institutional Class	[1]	3.20%	2.89%	3.16%	Dec. 03, 1987
A Class	[1]	2.71%	2.46%	2.65%	May 17, 2010
C Class	[1]	2.06%	2.13%	2.49%	Sep. 01, 2010
Y Class	[1]	3.38%	2.89%	3.15%	Mar. 01, 2010
Investor Class	[1]	2.93%	2.54%	2.70%	Aug. 01, 1994
After Taxes on Distributions Institutional Class	[1]	2.57%	1.85%	1.77%
After Taxes on Distributions and Sales Institutional Class	[1]	2.08%	1.86%	1.87%
BofA Merrill Lynch 1-3 Yr. Gov./Corp. Index	[1]	1.48%	2.87%	3.11%
Lipper Short Investment Grade Bond Funds Index	[1]	3.94%	3.02%	3.02%

[1] A contingent deferred sales charge ("CDSC") of 0.50% will be charged on certain purchases of $250,000 or more that are redeemed in whole or part within 12 months of purchase.

[1] The Total Annual Fund Operating Expenses do not correlate to the ratio of expenses to average net assets provided in the Fund's Financial Highlights table, which reflects the operating expenses of the Fund and does not include Acquired Fund Fees and Expenses.

[2] The Manager has contractually agreed to reduce and/or reimburse the A Class, C Class, Y Class and Investor Class of the Fund for Other Expenses, as applicable, through February 28, 2014 to the extent that Total Annual Fund Operating Expenses exceed 0.85% for the A Class, 1.60% for the C Class, 0.64% for the Y Class and 0.79% for the Investor 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.

[1] 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.

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American Beacon Retirement Income and Appreciation Fund | American Beacon Retirement Income and Appreciation Fund

American Beacon Retirement Income and Appreciation Fund

Investment Objective

The Fund’s investment objective is income and capital appreciation.

Fees and Expenses of the Fund

This table describes the fees and expenses that you may pay if you buy and hold shares of the Fund. You may qualify for sales discounts if you and your eligible family members invest, or agree to invest in the future, at least $50,000 in the A Class shares of the American Beacon Funds. More information about these and other discounts are available from your financial professional and in “Choosing Your Share Class” on page 101 of the Prospectus and “Additional Purchase and Sale Information for A Class Shares” on page 78 of the statement of additional information.

Shareholder Fees (fees paid directly from your investment)

Shareholder Fees American Beacon Retirement Income and Appreciation Fund	A Class		C Class	Y Class	Investor Class
Maximum sales charge imposed on purchases (as a percentage of offering price)	2.50%		none	none	none
Maximum deferred sales charge load (as a percentage of the lower of original offering price or redemption proceeds)	0.50%	[1]	1.00%	none	none

Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)

Annual Fund Operating Expenses American Beacon Retirement Income and Appreciation Fund		A Class	C Class	Y Class	Investor Class
Management fees		0.32%	0.32%	0.32%	0.32%
Distribution and/or service (12b-1) fees		0.25%	1.00%	none	none
Other expenses		0.71%	0.72%	0.55%	0.80%
Acquired Fund Fees and Expenses		0.01%	0.01%	0.01%	0.01%
Total annual fund operating expenses	[1]	1.29%	2.05%	0.88%	1.13%
Expense Reduction and Reimbursement		0.14%	0.08%	0.07%
Total annual fund operating expenses after expense reduction and reimbursement	[2]	1.15%	1.97%	0.81%

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 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:

Expense Example American Beacon Retirement Income and Appreciation Fund (USD $)	1 year	3 years	5 years	10 years
A Class	364	635	926	1,756
C Class	300	635	1,096	2,373
Y Class	83	274	481	1,078
Investor Class	115	359	622	1,374

Assuming no redemption of shares:

Expense Example No Redemption (USD $)	1 year	3 years	5 years	10 years
American Beacon Retirement Income and Appreciation Fund C Class	200	635	1,096	2,373

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 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 42% of the average value of its portfolio.

Principal Investment Strategies

Under normal circumstances, approximately 75% of the Fund’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,  master demand notes,  medium-term notes, funding agreements, mortgage-backed securities, asset-backed securities  and other debt securities (collectively referred to as “investment grade fixed-income securities”). If an investment held by the Fund is downgraded below investment grade, the Manager or sub-advisor 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’s remaining total assets are invested in convertible and non-convertible debt obligations without regard to credit quality, as well as equity securities. 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.

The Manager currently allocates the Fund’s assets between itself and a sub-advisor. The Manager makes investment decisions regarding a portion of the Fund’s fixed-income securities. In determining which securities to buy and sell, the Manager employs a top-down fixed-income investment strategy, as follows:

● Develop an overall investment strategy, including a portfolio duration target, by examining the current trends in the U.S. economy.

● 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.

● Determine the weightings of each security type by analyzing the difference in yield spreads between corporate and U.S. Government securities.

● Select specific debt securities within each security type.

● Review and monitor portfolio composition for changes in credit, risk-return profile and comparisons with benchmarks.

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 “one year” means that a security’s price would be expected to decrease by approximately 1% with a 1% increase in interest rates.

The sub-advisor invests in convertible securities but may invest up to 60% of its portion of the Fund’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 “high-yield bonds” or “junk bonds.” The average term to maturity of the fixed-income securities held in the portion of the Fund’s portfolio managed by the sub-advisor will typically range from three to ten years.

The sub-advisor also may invest up to 40% of its portion of the Fund’s total asset in non-convertible equity securities, common stocks, preferred stocks, American Depositary Receipts (“ADRs”) and U.S. dollar-denominated foreign stocks traded on U.S. exchanges (collectively referred to as “stocks”). Historically, the sub-advisor’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.

In selecting securities, the sub-advisor may take into consideration such quantitative factors as an issuer’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 any rating organizations as preliminary indicators of investment quality, in addition to its own credit research and analysis.

The Fund may also invest cash balances in other investment companies to gain market exposure on cash balances or reduce market exposure in anticipation of liquidity needs.

Principal Risks

There is no assurance that the Fund will achieve its investment objective and you could lose part or all of your investment in the Fund. The Fund is not designed for investors who need an assured level of income and is intended to be a long-term investment. The Fund is not a complete investment program and may not be appropriate for all investors. Investors should carefully consider their own investment goals and risk tolerance before investing in the Fund. The principal risks of investing in the Fund are:

Convertible Securities Risk

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.

Credit Risk

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’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.

Equity Investments Risk

Equity securities generally are subject to market risk. The Fund’s investments in equity securities may include common stocks, preferred stocks, ADRs, and U.S. dollar-denominated foreign stocks traded on U.S. exchanges. Such investments may expose the Fund to additional risks.

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 ADRs and U.S. dollar-denominated foreign stocks traded on U.S. exchanges are subject to certain of the risks associated with investing directly in foreign securities.

Foreign Exposure Risk

The Fund may invest in securities issued by foreign companies through ADRs 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. Non-U.S. investments carry potential risks not associated with U.S. investments. Such risks include, but are not limited to: (1) currency exchange rate fluctuations, (2) political and financial instability, (3) less liquidity and greater volatility, (4) lack of uniform accounting, auditing and financial reporting standards, (5) increased price volatility, and (6) less government regulation and supervision of foreign stock exchanges, brokers and listed companies.

Government-Sponsored Enterprises Risk

Securities held by the Fund that are issued by government-sponsored enterprises, such as the Federal National Mortgage Association (“Fannie Mae”), the Federal Home Loan Mortgage Corporation (“Freddie Mac”), 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.

Interest Rate Risk

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.

Investment Risk

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. Therefore, you may lose money by investing in the Fund.

Issuer Risk

The value of a security may decline for a number of reasons which directly relate to the issuer, such as management performance, financial leverage and reduced demand for the issuer’s goods or services, as well as the historical and prospective earnings of the issuer and the value of its assets.

Market Events Risk

Turbulence in financial markets and reduced liquidity in equity, credit and fixed-income markets may negatively affect many issuers worldwide which could adversely affect the Fund.

Market Risk

Market risks, including political, regulatory, market and economic developments, and developments that impact specific economic sectors, industries or segments of the market, can affect the value of the Fund’s shares. The Fund’s equity investments are subject to stock market risk, which involves the possibility that the value of the Fund’s investments in stocks will decline due to drops in the stock market. The Fund’s fixed-income investments are subject to the risk that the lack of liquidity or other adverse credit market conditions may hamper the Fund’s ability to purchase and sell the securities. From time to time, certain investments 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 holdings to meet redemption requests or other cash needs, the Fund may have to sell them at a loss.

Other Investment Companies Risk

The Fund may invest in shares of other registered investment companies, including open-end funds, exchange-traded funds (“ETFs”) and money market funds. To the extent that the Fund invests in shares of other registered investment companies, you will indirectly bear fees and expenses charged by the underlying funds in addition to the Fund’s direct fees and expenses and will be subject to the risks associated with investments in those funds.

Prepayment and Extension Risk

The Fund’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’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’s effective maturity and a decline in its price.

Securities Selection Risk

Securities selected by the Manager or 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.

U.S. Government Securities Risk

A security backed by the U.S. Treasury or the full faith and credit of the United States is guaranteed only as to the timely payment of interest and principal when held to maturity. The market prices for such securities are not guaranteed and will fluctuate. They are also subject to credit risk and interest rate risk.

Fund Performance

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 the Barclays Capital U.S. Aggregate Bond Index, which is the Fund’s primary benchmark. The table also shows how the Fund’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’s allocation of its assets between fixed-income securities and convertible securities. The Lipper Intermediate Investment Grade Debt Funds Index shows how the Fund’s performance compares to a composite of mutual funds with similar investment objectives.

The chart and the table below show the performance of the Fund’s Investor Class shares for all periods. The Fund began operations of 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’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.

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.

Total Return for the Calendar Year Ended 12/31 of each Year

Calendar year total returns for Investor Class shares

Highest Quarterly Return:	6.61%
(1/1/04 through 12/31/12)	(3rd Quarter 2009)
Lowest Quarterly Return:	-4.19%
(1/1/04 through 12/31/12)	(3rd Quarter 2008)

Average Annual Total Returns For the periods ended December 31, 2012

Average Annual Returns American Beacon Retirement Income and Appreciation Fund		1 Year	5 Years	10 Years	Inception Date
Investor Class	[1]	7.19%	5.22%	4.86%	Jun. 30, 2003
A Class	[1]	7.10%	5.20%	4.85%	May 17, 2010
C Class	[1]	6.08%	4.76%	4.62%	Sep. 01, 2010
Y Class	[1]	7.41%	5.34%	4.93%	Mar. 01, 2010
After Taxes on Distributions Investor Class	[1]	6.07%	4.10%	3.63%
After Taxes on Distributions and Sales Investor Class	[1]	4.78%	3.85%	3.48%
Barclays Capital U.S. Aggregate Bond Index	[1]	4.21%	5.96%	5.03%
Linked Barclays Capital U.S. Aggregate Bond Index	[1]	4.21%	6.19%	5.95%
BofA Merrill Lynch All U.S. Convertibles Index	[1]	14.96%	4.06%	6.23%
Retirement Income and Appreciation Composite Index	[1]	6.89%	5.73%	5.30%
Lipper Intermediate Investment Grade Debt Funds Index	[1]	7.82%	6.28%	5.08%

[1] A contingent deferred sales charge ("CDSC") of 0.50% will be charged on certain purchases of $250,000 or more that are redeemed in whole or part within 12 months of purchase.

[1] The Total Annual Fund Operating Expenses do not correlate to the ratio of expenses to average net assets provided in the Fund's Financial Highlights table, which reflects the operating expenses of the Fund and does not include Acquired Fund Fees and Expenses.

[2] The Manager has contractually agreed to reduce and/or reimburse the A Class, C Class and Y Class of the Fund for Other Expenses, as applicable, through February 28, 2014 to the extent that Total Annual Fund Operating Expenses exceed 1.14% for the A Class, 1.96% for the C Class and 0.80% for the Y 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.

[1] After-tax returns are shown only for Investor 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.

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American Beacon Emerging Markets Fund | American Beacon Emerging Markets Fund

American Beacon Emerging Markets Fund

Investment Objective

The Fund’s investment objective is long-term capital appreciation.

Fees and Expenses of the Fund

This table describes the fees and expenses that you may pay if you buy and hold shares of the Fund.

Shareholder fees (fees paid directly from your investment)

Shareholder Fees	American Beacon Emerging Markets Fund AMR Class
Redemption fee (as a percentage of amount redeemed; applies to the proceeds of shares redeemed within 90 days of purchase)	2.00%

Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)

Annual Fund Operating Expenses		American Beacon Emerging Markets Fund AMR Class
Management fees		0.80%
Distribution and/or service (12b-1) fees		none
Other expenses		0.44%
Acquired Fund Fees and Expenses		0.01%
Total annual fund operating expenses	[1]	1.25%

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 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:

Expense Example (USD $)	1 year	3 years	5 years	10 years
American Beacon Emerging Markets Fund AMR Class	127	396	686	1,511

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 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 44% of the average value of its portfolio.

Principal Investment Strategies

Under normal circumstances, at least 80% of the Fund’s net assets (plus the amount of any borrowings for investment purposes) are invested in equity securities of issuers that:

u are primarily listed on the trading market of an emerging market country;

u are headquartered in an emerging market country; or

u derive 50% or more of their revenues from, or have 50% or more of their assets in, an emerging market country.

An emerging market country is one that:

● has an emerging stock market as defined by the International Finance Corporation;  

● has a low- to middle-income economy according to the World Bank;  

● is included in the IFC Investable Index or the Morgan Stanley Capital International® Emerging Markets Index; or  

● has a per-capita gross national product of $10,000 or less.

The Fund’s equity investments may include common stocks, preferred stocks, securities convertible into common stocks and depositary receipts (collectively referred to as “stocks”). The Fund may invest in companies of all market capitalizations.

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 reducing volatility and downside risk.

One sub-advisor combines a top-down country allocation investment approach with bottom-up stock selection. The sub-advisor first allocates its portion of the Fund’s assets among emerging market countries based on relative economic, political and social fundamentals, stock valuations and investor sentiment. The sub-advisor then selects individual securities within these countries on the basis of attractive growth characteristics, reasonable valuations and company managements with a strong shareholder value orientation. To attempt to manage risk, the sub-advisor emphasizes thorough macroeconomic and fundamental research.

The second sub-advisor utilizes a bottom-up investment strategy that is value-oriented and research-driven. The sub-advisor buys stocks that exhibit good value characteristics, strong business fundamentals and positive business momentum. The focus on business momentum helps the sub-advisor avoid the value trap, while bottom-up fundamental security analysis helps to verify their quantitative analysis. Lastly, they focus on the preservation of capital as they believe it is the key to long-term performance.

The third sub-advisor uses a Graham and Dodd based value oriented approach to managing emerging market equity investments. The strategy focuses on fundamental research at the company level and attempts to identify securities trading at significant discounts to their long term intrinsic value. This discount, or “margin of safety” is typically a by-product of short term price volatility and market inefficiency and the sub-advisor seeks to outperform the benchmark over the long-term by building concentrated portfolios of undervalued companies which they believe offer attractive long-term appreciation potential.

The sub-advisors may consider potential changes in currency exchange rates when choosing stocks. A sub-advisor may trade forward foreign currency contracts, including NDFs, or currency futures in an attempt to reduce the Fund’s risk exposure to adverse fluctuations in currency exchange rates.

The Fund may invest cash balances in money market funds and may purchase and sell futures contracts to gain market exposure on cash balances or reduce market exposure in anticipation of liquidity needs.

Principal Risks

There is no assurance that the Fund will achieve its investment objective and you could lose part or all of your investment in the Fund. The Fund is not designed for investors who need an assured level of income and is intended to be a long-term investment. The Fund is not a complete investment program and may not be appropriate for all investors. Investors should carefully consider their own investment goals and risk tolerance before investing in the Fund. The principal risks of investing in the Fund are:

Currency Risk

Foreign currencies may decline in value relative to the U.S. dollar and affect the Fund’s investments in foreign (non-U.S.) currencies or in securities that trade in, and receive revenues in, or in derivatives that provide exposure to, foreign (non-U.S.) currencies.

Emerging Markets Risk

When investing in emerging markets, the risks mentioned below of investing in foreign securities are heightened. Emerging markets have unique risks that are greater than or in addition to investing in developed markets because emerging markets are generally smaller, less developed, less liquid and more volatile than the securities markets of the U.S. and other developed markets. There are also risks of: greater political uncertainties; an economy’s dependence on revenues from particular commodities or on international aid or development assistance; currency transfer restrictions; a limited number of potential buyers for such securities; and delays and disruptions in securities settlement procedures. In addition, there may be more volatile rates of return.

Equity Investments Risk

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, rights, warrants and depository receipts. Such investments may expose the Fund to additional risks.

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 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. Depository receipts are subject to certain of the risks associated with investing directly in foreign securities.

Foreign Investing Risk

Non U.S. investments carry potential risks not associated with U.S. investments. Such risks include, but are not limited to: (1) currency exchange rate fluctuations, (2) political and financial instability, (3) less liquidity and greater volatility, (4) lack of uniform accounting, auditing and financial reporting standards, (5) increased price volatility; (6) less government regulation and supervision of foreign stock exchanges, brokers and listed companies; and (7) delays in transaction settlement in some foreign markets.

Futures Contracts and Foreign Currency Forward Contracts Risk

Futures contracts and foreign currency forward contracts, including NDFs, are derivative instruments pursuant to a contract with a counterparty to pay a fixed price for an agreed amount of securities or other underlying assets at an agreed date or to buy or sell a specific currency at a future date at a price set at the time of the contract. The use of such derivative instruments may expose the Fund to additional risks that it would not be subject to if they invested directly in the securities underlying those derivatives. Futures contracts may experience potentially dramatic price changes (losses) and imperfect correlations between the price of the contract and the underlying security, index or currency which will increase the volatility of the Fund and may involve a small investment of cash relative to the magnitude of the risk assumed. There can be no assurance that any strategy used will succeed. Not all forward contracts, including NDFs, require a counterparty to post collateral, which may expose the Fund to greater losses in the event of a default by a counterparty.

Hedging Risk

Gains or losses from positions in hedging instruments may be much greater than the instrument’s original cost. The counterparty may be unable to honor its financial obligation to the Fund. In addition, the Manager or a sub-advisor may be unable to close the transaction at the time it would like or at the price it believes the security is currently worth.

Investment Risk

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. Therefore, you may lose money by investing in the Fund.

Issuer Risk

The value of a security may decline for a number of reasons which directly relate to the issuer, such as management performance, financial leverage and reduced demand for the issuer’s goods or services, as well as the historical and prospective earnings of the issuer and the value of its assets.

Large Capitalization Companies Risk

The securities of large market capitalization companies may underperform other segments of the market because such companies may be less responsive to competitive challenges and opportunities and may be unable to attain high growth rates during periods of economic expansion.

Market Events Risk

Turbulence in financial markets and reduced liquidity in equity, credit and fixed-income markets may negatively affect many issuers worldwide which could adversely affect the Fund.

Market Risk

Market risks, including political, regulatory, market and economic developments and developments that impact specific economic sectors, industries or segments of the market, can affect the value of the Fund’s shares.  The Fund’s equity investments are subject to stock market risk, which involves the possibility that the value of the Fund’s investments in stocks of a particular country will decline due to drops in the stock market.  From time to time, certain investments 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 holdings to meet redemption requests or other cash needs, the Fund may have to sell them at a loss.

Market Timing Risk

Because the Fund invests in foreign securities, it is particularly subject to the risk of market timing activities. The Fund generally prices foreign securities using their closing prices from the foreign markets in which they trade, typically prior to the Fund’s determination of its net asset value. These prices may be affected by events that occur after the close of a foreign market but before the Fund prices its shares. In such instances, the Fund may fair value foreign securities. However, some investors may engage in frequent short-term trading in the Fund to take advantage of any price differentials that may be reflected in the net asset value of the Fund’s shares. There is no assurance that fair valuation of securities can reduce or eliminate market timing. While the Manager monitors trading in Fund shares, there is no guarantee that it can detect all market timing activities.

Securities Selection Risk

Securities selected by the Manager or 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.

Small and Medium Capitalization Companies Risk

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.

Fund Performance

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® Emerging Markets Funds Index, a composite of mutual funds comparable to the Fund. You may obtain updated performance information on the Fund’s website at www.americanbeaconfunds.com. Past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future.

Total Return for the Calendar Year Ended 12/31 of each Year

Highest Quarterly Return:	35.55%
(1/1/03 through 12/31/12)	(2nd Quarter 2009)
Lowest Quarterly Return:	-26.31%
(1/1/03 through 12/31/12)	(4th Quarter 2008)

Average Annual Total Returns For the periods ended December 31, 2012

Average Annual Returns American Beacon Emerging Markets Fund	1 Year	5 Years	10 Years
AMR Class	17.74%	(1.82%)	15.34%
MSCI Emerging Markets Index	18.22%	(0.92%)	16.52%
Lipper Emerging Markets Funds Index	20.08%	1.48%	15.89%

[1] The Total Annual Fund Operating Expenses do not correlate to the ratio of expenses to average net assets provided in the Fund's Financial Highlights table, which reflects the operating expenses of the Fund and does not include Acquired Fund Fees and Expenses.

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Label

Element

Value

Risk/Return:

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Risk/Return [Heading]

rr_RiskReturnHeading

American Beacon High Yield Bond Fund

Objective [Heading]

rr_ObjectiveHeading

Investment Objective

Objective, Primary [Text Block]

rr_ObjectivePrimaryTextBlock

The Fund’s investment objective is high current income and capital appreciation.

Expense [Heading]

rr_ExpenseHeading

Fees and Expenses of the Fund

Expense Narrative [Text Block]

rr_ExpenseNarrativeTextBlock

This table describes the fees and expenses that you may pay if you buy and hold shares of the Fund. You may qualify for sales discounts if you and your eligible family members invest, or agree to invest in the future, at least $50,000 in 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 101 of the Prospectus and “Additional Purchase and Sale Information for A Class Shares” on page 78 of the statement of additional information.

Shareholder Fees Caption [Text]

rr_ShareholderFeesCaption

Shareholder Fees (fees paid directly from your investment)

Operating Expenses Caption [Text]

rr_OperatingExpensesCaption

Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)

Fee Waiver or Reimbursement over Assets, Date of Termination

rr_FeeWaiverOrReimbursementOverAssetsDateOfTermination

2014-02-28

Portfolio Turnover [Heading]

rr_PortfolioTurnoverHeading

Portfolio Turnover

Portfolio Turnover [Text Block]

rr_PortfolioTurnoverTextBlock

The Fund pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when fund shares are held in a taxable account. These costs, which are not reflected in annual fund operating expenses or in the example, affect the Fund’s performance. During the most recent fiscal year, the Fund’s portfolio turnover rate was 100% of the average value of its portfolio.

Portfolio Turnover, Rate

rr_PortfolioTurnoverRate

100.00%

Expense Breakpoint Discounts [Text]

rr_ExpenseBreakpointDiscounts

You may qualify for sales discounts if you and your eligible family members invest, or agree to invest in the future, at least $50,000 in the A Class shares of the American Beacon Funds.

Expense Breakpoint, Minimum Investment Required [Amount]

rr_ExpenseBreakpointMinimumInvestmentRequiredAmount

$ 50,000

Expenses Not Correlated to Ratio Due to Acquired Fund Fees [Text]

rr_ExpensesNotCorrelatedToRatioDueToAcquiredFundFees

The Total Annual Fund Operating Expenses do not correlate to the ratio of expenses to average net assets provided in the Fund's Financial Highlights table, which reflects the operating expenses of the Fund and does not include Acquired Fund Fees and Expenses.

Expense Example [Heading]

rr_ExpenseExampleHeading

Example

Expense Example Narrative [Text Block]

rr_ExpenseExampleNarrativeTextBlock

This Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return each year and that the Fund’s operating expenses remain the same. Although your actual costs may be higher or lower, based on these assumptions, your costs would be:

Expense Example, No Redemption, By Year, Caption [Text]

rr_ExpenseExampleNoRedemptionByYearCaption

Assuming no redemption of shares:

Strategy [Heading]

rr_StrategyHeading

Principal Investment Strategies

Strategy Narrative [Text Block]

rr_StrategyNarrativeTextBlock

This Fund seeks to maximize current income by investing in a diversified portfolio of public and private issue debt securities that are generally rated below investment grade (such as BB or lower by Standard & Poor’s Ratings Services or Fitch, Inc. and/or Ba or lower by Moody’s Investors Service, Inc.) or deemed to be below investment grade by an investment sub-advisor. These types of securities are commonly referred to as “high-yield bonds” or “junk bonds.” The Fund seeks capital appreciation by investing in issues whose relative value is expected to increase over time. The Fund has no limitations regarding the maturities of the debt securities it can buy or the market capitalization of the issuers of those securities.

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 reducing volatility and downside risk.

The Fund seeks its investment objective by investing, under normal circumstances, at least 80% of its net assets (plus the amount of any borrowings for investment purposes) in a diversified portfolio of domestic and foreign high-yield bonds. High-yield issuers are generally those which have below investment grade ratings because they are relatively small in size, relatively young in years, relatively leveraged financially (perhaps borrowing heavily to finance expansion or due to a leveraged buyout), or formerly “blue chip” companies that have encountered some financial difficulties.

In selecting investments, the Fund’s sub-advisors utilize a bottom-up and research-driven investment process that relies heavily on internal research and fundamental credit analysis. The investment philosophy of each sub-advisor concentrates on identification of relative value and downside protection.

To a lesser extent, the Fund may invest in other securities, including investment grade securities, foreign securities, common and preferred stocks and convertible securities, in keeping with the Fund’s overall investment objective.

The Fund may also invest cash balances in other investment companies to gain market exposure on cash balances or reduce market exposure in anticipation of liquidity needs.

Risk [Heading]

rr_RiskHeading

Principal Risks

Risk Narrative [Text Block]

rr_RiskNarrativeTextBlock

There is no assurance that the Fund will achieve its investment objective and you could lose part or all of your investment in the Fund. The Fund is designed primarily for investors seeking current income from a fund that invests mainly in a variety of high-yield, high-risk debt securities. Those investors should be willing to assume the credit risks of a fund that typically invests a significant amount of its assets in below investment-grade debt securities and the price changes in those securities that can occur when interest rates change. The Fund is not designed for investors who need an assured level of current income and is intended to be a long-term investment. The Fund is not a complete investment program and may not be appropriate for all investors. Investors should carefully consider their own investment goals and risk tolerance before investing in the Fund. The principal risks of investing in the Fund are:

Credit Risk

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’s credit rating can cause the price of its bonds to go down. Since the Fund invests in lower-quality debt securities considered speculative in nature, this risk will be substantial.

Equity Investments Risk

Equity securities generally are subject to market risk. The Fund’s investments in equity securities may include common and preferred stocks and convertible securities. Such investments may expose the Fund to additional risks.

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 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.

Foreign Investing Risk

Non-U.S. investments carry potential risks not associated with U.S. investments. Such risks include, but are not limited to: (1) currency exchange rate fluctuations, (2) political and financial instability, (3) less liquidity and greater volatility, (4) lack of uniform accounting, auditing and financial reporting standards, (5) increased price volatility, (6) less government regulation and supervision of foreign stock exchanges, brokers and listed companies, and (7) delays in transaction settlement in some foreign markets.

High Portfolio Turnover Risk

Portfolio turnover is a measure of a Fund’s trading activity over a one-year period. A portfolio turnover rate of 100% would indicate that a Fund sold and replaced the entire value of its securities holdings during the period. High portfolio turnover could increase a Fund’s transaction costs and possibly have a negative impact on performance. Frequent trading by a Fund could also result in increased short-term capital gain distributions to shareholders, which are taxable as ordinary income.

High-Yield Securities Risk

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’s ability to repay principal and interest obligations. Issuers of lower-rated securities also have a greater risk of default or bankruptcy.

Interest Rate Risk

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.

Investment Risk

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. Therefore, you may lose money by investing in the Fund.

Issuer Risk

The value of a security may decline for a number of reasons which directly relate to the issuer, such as management performance, financial leverage and reduced demand for the issuer’s goods or services, as well as the historical and prospective earnings of the issuer and the value of its assets.

Market Events Risk

Turbulence in financial markets and reduced liquidity in equity, credit and fixed-income markets may negatively affect many issuers worldwide which could adversely affect the Fund.

Market Risk

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’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’s investments to decline, regardless of the financial conditions of the issuers held by the Fund. From time to time, certain investments 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 holdings to meet redemption requests, the Fund may have to sell them at a loss.

Market Timing Risk

Because the Fund invests in high yield bonds that may lack market liquidity, it is subject to the risk of market timing activities.  The limited trading activity of some high yield bonds may result in market prices that do not reflect the true market value of these illiquid securities. However, some investors may engage in frequent short-term trading in the Fund to take advantage of any price differentials that may be reflected in the net asset value of the Fund’s shares. There is no assurance that fair valuation of securities can reduce or eliminate market timing. While the Manager monitors trading in Fund shares, there is no guarantee that it can detect all market timing activities.

Securities Selection Risk

Securities selected by the Manager or 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.

Small and Medium Capitalization Companies Risk

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.

Unrated Securities Risk

Some unrated securities may not have an active trading market or may be difficult to value, which means the Fund might have difficulty selling them promptly at an acceptable price.

Risk Lose Money [Text]

rr_RiskLoseMoney

There is no assurance that the Fund will achieve its investment objective and you could lose part or all of your investment in the Fund.

Risk Not Insured Depository Institution [Text]

rr_RiskNotInsuredDepositoryInstitution

An investment in the Fund is not a deposit of a bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.

Bar Chart and Performance Table [Heading]

rr_BarChartAndPerformanceTableHeading

Fund Performance

Performance Narrative [Text Block]

rr_PerformanceNarrativeTextBlock

The bar chart and table below provide an indication of risk by showing 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® High Current Yield Bond Funds Index, a composite of mutual funds comparable to the Fund.

The chart and the table below show the performance of the Fund’s Institutional Class shares for all periods. The Fund began operations of Investor Class shares on March 1, 2002, 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 Institutional Class is shown for Y Class shares for all periods up to the inception of Y Class and for Investor Class shares before March 1, 2002. The performance of the Institutional Class is shown for the A Class and C Class shares from January 1, 2002 through March 1, 2002, and the performance of the Investor Class is shown from March 1, 2002 up to the inception of the A Class and C Class shares. 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 new 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.

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.

Performance Information Illustrates Variability of Returns [Text]

rr_PerformanceInformationIllustratesVariabilityOfReturns

The bar chart and table below provide an indication of risk by showing how the Fund's performance has varied from year to year.

Performance Availability Website Address [Text]

rr_PerformanceAvailabilityWebSiteAddress

www.americanbeaconfunds.com

Performance Past Does Not Indicate Future [Text]

rr_PerformancePastDoesNotIndicateFuture

Past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future.

Bar Chart [Heading]

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Calendar year total returns for Institutional Class shares

Bar Chart Narrative [Text Block]

rr_BarChartNarrativeTextBlock

Total Return for the Calendar Year Ended 12/31 of each Year

Bar Chart Does Not Reflect Sales Loads [Text]

rr_BarChartDoesNotReflectSalesLoads

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.

Bar Chart Closing [Text Block]

rr_BarChartClosingTextBlock

Highest Quarterly Return:	19.31%
(1/1/03 through 12/31/12)	(2nd Quarter 2009)
Lowest Quarterly Return:	-18.52%
(1/1/03 through 12/31/12)	(4th Quarter 2008)

Highest Quarterly Return, Label

rr_HighestQuarterlyReturnLabel

Highest Quarterly Return:

Highest Quarterly Return, Date

rr_BarChartHighestQuarterlyReturnDate

Jun. 30, 2009

Highest Quarterly Return

rr_BarChartHighestQuarterlyReturn

19.31%

Lowest Quarterly Return, Label

rr_LowestQuarterlyReturnLabel

Lowest Quarterly Return:

Lowest Quarterly Return, Date

rr_BarChartLowestQuarterlyReturnDate

Dec. 31, 2008

Lowest Quarterly Return

rr_BarChartLowestQuarterlyReturn

(18.52%)

Performance Table Heading

rr_PerformanceTableHeading

Average Annual Total Returns For the periods ended December 31, 2012

Performance Table Uses Highest Federal Rate

rr_PerformanceTableUsesHighestFederalRate

After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes.

Performance Table Not Relevant to Tax Deferred

rr_PerformanceTableNotRelevantToTaxDeferred

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.

Performance Table One Class of after Tax Shown [Text]

rr_PerformanceTableOneClassOfAfterTaxShown

After-tax returns are shown only for Institutional Class shares; after-tax returns for other share classes will vary.

JPMorgan Global High-Yield Index

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

16.21%

^[1]

5 Years

rr_AverageAnnualReturnYear05

10.45%

^[1]

10 Years

rr_AverageAnnualReturnYear10

10.70%

^[1]

Lipper High Current Yield Bond Funds Index

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

15.40%

^[1]

5 Years

rr_AverageAnnualReturnYear05

7.73%

^[1]

10 Years

rr_AverageAnnualReturnYear10

8.89%

^[1]

Institutional Class

Risk/Return:

rr_RiskReturnAbstract

Maximum sales charge imposed on purchases (as a percentage of offering price)

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

none

Maximum deferred sales charge load (as a percentage of the lower of original offering price or redemption proceeds)

rr_MaximumDeferredSalesChargeOverOther

none

Redemption Fee (as a percentage of Amount Redeemed)

rr_RedemptionFeeOverRedemption

(2.00%)

Management fees

rr_ManagementFeesOverAssets

0.43%

Distribution and/or service (12b-1) fees

rr_DistributionAndService12b1FeesOverAssets

none

Other expenses

rr_OtherExpensesOverAssets

0.50%

Acquired Fund Fees and Expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.01%

Total annual fund operating expenses

rr_ExpensesOverAssets

0.94%

^[2]

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

96

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

300

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

520

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

1,155

Annual Return 2003

rr_AnnualReturn2003

18.49%

Annual Return 2004

rr_AnnualReturn2004

9.33%

Annual Return 2005

rr_AnnualReturn2005

2.30%

Annual Return 2006

rr_AnnualReturn2006

9.60%

Annual Return 2007

rr_AnnualReturn2007

2.84%

Annual Return 2008

rr_AnnualReturn2008

(27.64%)

Annual Return 2009

rr_AnnualReturn2009

47.88%

Annual Return 2010

rr_AnnualReturn2010

14.10%

Annual Return 2011

rr_AnnualReturn2011

2.91%

Annual Return 2012

rr_AnnualReturn2012

15.34%

1 Year

rr_AverageAnnualReturnYear01

15.34%

^[1]

5 Years

rr_AverageAnnualReturnYear05

7.70%

^[1]

10 Years

rr_AverageAnnualReturnYear10

8.03%

^[1]

Inception Date

rr_AverageAnnualReturnInceptionDate

Dec. 29, 2000

^[1]

Institutional Class | After Taxes on Distributions

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

12.40%

^[1]

5 Years

rr_AverageAnnualReturnYear05

4.46%

^[1]

10 Years

rr_AverageAnnualReturnYear10

4.93%

^[1]

Institutional Class | After Taxes on Distributions and Sales

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

9.86%

^[1]

5 Years

rr_AverageAnnualReturnYear05

4.56%

^[1]

10 Years

rr_AverageAnnualReturnYear10

5.01%

^[1]

Investor Class

Risk/Return:

rr_RiskReturnAbstract

Maximum sales charge imposed on purchases (as a percentage of offering price)

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

none

Maximum deferred sales charge load (as a percentage of the lower of original offering price or redemption proceeds)

rr_MaximumDeferredSalesChargeOverOther

none

Redemption Fee (as a percentage of Amount Redeemed)

rr_RedemptionFeeOverRedemption

(2.00%)

Management fees

rr_ManagementFeesOverAssets

0.43%

Distribution and/or service (12b-1) fees

rr_DistributionAndService12b1FeesOverAssets

none

Other expenses

rr_OtherExpensesOverAssets

0.73%

Acquired Fund Fees and Expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.01%

Total annual fund operating expenses

rr_ExpensesOverAssets

1.17%

^[2]

Fee Waiver or Reimbursement

rr_FeeWaiverOrReimbursementOverAssets

(0.07%)

Total annual fund operating expenses after expense reduction and reimbursement

rr_NetExpensesOverAssets

1.10%

^[3]

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

112

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

365

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

638

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

1,415

1 Year

rr_AverageAnnualReturnYear01

14.94%

^[1]

5 Years

rr_AverageAnnualReturnYear05

7.42%

^[1]

10 Years

rr_AverageAnnualReturnYear10

7.74%

^[1]

Inception Date

rr_AverageAnnualReturnInceptionDate

Mar. 01, 2002

^[1]

Y Class

Risk/Return:

rr_RiskReturnAbstract

Maximum sales charge imposed on purchases (as a percentage of offering price)

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

none

Maximum deferred sales charge load (as a percentage of the lower of original offering price or redemption proceeds)

rr_MaximumDeferredSalesChargeOverOther

none

Redemption Fee (as a percentage of Amount Redeemed)

rr_RedemptionFeeOverRedemption

(2.00%)

Management fees

rr_ManagementFeesOverAssets

0.43%

Distribution and/or service (12b-1) fees

rr_DistributionAndService12b1FeesOverAssets

none

Other expenses

rr_OtherExpensesOverAssets

0.70%

Acquired Fund Fees and Expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.01%

Total annual fund operating expenses

rr_ExpensesOverAssets

1.14%

^[2]

Fee Waiver or Reimbursement

rr_FeeWaiverOrReimbursementOverAssets

(0.15%)

Total annual fund operating expenses after expense reduction and reimbursement

rr_NetExpensesOverAssets

0.99%

^[3]

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

101

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

348

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

613

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

1,374

1 Year

rr_AverageAnnualReturnYear01

15.01%

^[1]

5 Years

rr_AverageAnnualReturnYear05

7.55%

^[1]

10 Years

rr_AverageAnnualReturnYear10

7.96%

^[1]

Inception Date

rr_AverageAnnualReturnInceptionDate

Mar. 01, 2010

^[1]

A Class

Risk/Return:

rr_RiskReturnAbstract

Maximum sales charge imposed on purchases (as a percentage of offering price)

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

4.75%

Maximum deferred sales charge load (as a percentage of the lower of original offering price or redemption proceeds)

rr_MaximumDeferredSalesChargeOverOther

none

Redemption Fee (as a percentage of Amount Redeemed)

rr_RedemptionFeeOverRedemption

(2.00%)

Management fees

rr_ManagementFeesOverAssets

0.43%

Distribution and/or service (12b-1) fees

rr_DistributionAndService12b1FeesOverAssets

0.25%

Other expenses

rr_OtherExpensesOverAssets

0.78%

Acquired Fund Fees and Expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.01%

Total annual fund operating expenses

rr_ExpensesOverAssets

1.47%

^[2]

Fee Waiver or Reimbursement

rr_FeeWaiverOrReimbursementOverAssets

(0.34%)

Total annual fund operating expenses after expense reduction and reimbursement

rr_NetExpensesOverAssets

1.13%

^[3]

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

585

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

886

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

1,209

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

2,121

1 Year

rr_AverageAnnualReturnYear01

14.98%

^[1]

5 Years

rr_AverageAnnualReturnYear05

7.46%

^[1]

10 Years

rr_AverageAnnualReturnYear10

7.76%

^[1]

Inception Date

rr_AverageAnnualReturnInceptionDate

May 17, 2010

^[1]

C Class

Risk/Return:

rr_RiskReturnAbstract

Maximum sales charge imposed on purchases (as a percentage of offering price)

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

none

Maximum deferred sales charge load (as a percentage of the lower of original offering price or redemption proceeds)

rr_MaximumDeferredSalesChargeOverOther

1.00%

Redemption Fee (as a percentage of Amount Redeemed)

rr_RedemptionFeeOverRedemption

(2.00%)

Management fees

rr_ManagementFeesOverAssets

0.43%

Distribution and/or service (12b-1) fees

rr_DistributionAndService12b1FeesOverAssets

1.00%

Other expenses

rr_OtherExpensesOverAssets

0.73%

Acquired Fund Fees and Expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.01%

Total annual fund operating expenses

rr_ExpensesOverAssets

2.17%

^[2]

Fee Waiver or Reimbursement

rr_FeeWaiverOrReimbursementOverAssets

(0.29%)

Total annual fund operating expenses after expense reduction and reimbursement

rr_NetExpensesOverAssets

1.88%

^[3]

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

291

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

651

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

1,138

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

2,481

Expense Example, No Redemption, 1 Year

rr_ExpenseExampleNoRedemptionYear01

191

Expense Example, No Redemption, 3 Years

rr_ExpenseExampleNoRedemptionYear03

651

Expense Example, No Redemption, 5 Years

rr_ExpenseExampleNoRedemptionYear05

1,138

Expense Example, No Redemption, 10 Years

rr_ExpenseExampleNoRedemptionYear10

$ 2,481

1 Year

rr_AverageAnnualReturnYear01

14.15%

^[1]

5 Years

rr_AverageAnnualReturnYear05

7.04%

^[1]

10 Years

rr_AverageAnnualReturnYear10

7.55%

^[1]

Inception Date

rr_AverageAnnualReturnInceptionDate

Sep. 01, 2010

^[1]

[1] 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.

[2] The Total Annual Fund Operating Expenses do not correlate to the ratio of expenses to average net assets provided in the Fund's Financial Highlights table, which reflects the operating expenses of the Fund and does not include Acquired Fund Fees and Expenses.

[3] The Manager has contractually agreed to reduce and/or reimburse the A Class, C Class ,Y Class and Investor Class of the Fund for Other Expenses, as applicable, through February 28, 2014 to the extent that Total Annual Fund Operating Expenses exceed 1.12% for the A Class, 1.87% for the C Class, 0.98% of the Y Class and 1.09% for the Investor 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.

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American Beacon Small Cap Value II Fund | American Beacon Small Cap Value II Fund

American Beacon Small Cap Value II Fund

Investment Objective

The Fund’s investment objective is long-term capital appreciation.

Fees and Expenses of the Fund

This table describes the fees and expenses that you may pay if you buy and hold shares of the Fund.  You may qualify for sales discounts if you and your eligible family members invest, or agree to invest in the future, at least $50,000 in 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 101 of the Prospectus and “Additional Purchase and Sale Information for A Class Shares” on page 78 of the statement of additional information.

Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)

Annual Fund Operating Expenses American Beacon Small Cap Value II Fund		Y Class	Investor Class
Management fees		0.60%	0.60%
Distribution and/or service (12b-1) fees		none	none
Other expenses		3.84%	4.20%
Acquired Fund Fees and Expenses		0.08%	0.08%
Total annual fund operating expenses	[1]	4.52%	4.88%
Expense Reduction and Reimbursement		3.35%	3.43%
Total fund operating expenses after expense reduce and reimbursement	[2]	1.17%	1.45%

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 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:

Expense Example American Beacon Small Cap Value II Fund (USD $)	1 year	3 years	5 years	10 years
Y Class	119	1,062	2,014	4,435
Investor Class	148	1,160	2,174	4,721

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 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 82% of the average value of its portfolio.

Principal Investment Strategies

Under normal circumstances, at least 80% of the Fund’s net assets (plus the amount of any borrowings for investment purposes) are invested in equity securities of small market capitalization companies. These companies have market capitalizations of $4 billion or less at the time of investment. The Fund’s investments may include common stocks, preferred stocks, securities convertible into common stocks, real estate investment trusts, U.S. dollar-denominated foreign securities trading on U.S. exchanges and U.S. dollar-denominated American Depositary Receipts.

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 reducing volatility and downside risk.

The sub-advisors select stocks that, in their opinion, have most or all of the following characteristics (relative to the Russell 2000(R) Index):

Ø above-average earnings growth potential,

Ø below-average price to earnings ratio, and

Ø below-average price to book value ratio.

Each of the 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 sub-advisors typically seek to invest in companies that they believe are undervalued at the time of purchase. The decision to sell a security is typically based on the belief that the company is no longer considered undervalued or shows deteriorating fundamentals, or that better investment opportunities exist.

The Fund may invest cash balances in money market funds and may purchase and sell futures contracts to gain market exposure on cash balances or reduce market exposure in anticipation of liquidity needs.

The Fund may lend its securities to broker-dealers and other institutions to earn additional income.

Principal Risks

There is no assurance that the Fund will achieve its investment objective and you could lose part or all of your investment in the Fund. The Fund is not designed for investors who need an assured level of income and is intended to be a long-term investment. The Fund is not a complete investment program and may not be appropriate for all investors. Investors should carefully consider their own investment goals and risk tolerance before investing in the Fund. The principal risks of investing in the Fund are:

Equity Investments Risk

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 Depositarinvesting in the Fund arey Receipts (“ADRs”) and U.S. dollar-denominated foreign stocks traded on U.S. exchanges. Such investments may expose the Fund to additional risks.

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. 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.

Foreign Exposure Risk

The Fund may invest in securities issued by foreign companies through ADRs and U.S. dollar-denominated foreign stocks trading on U.S. exchanges. ADRs 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.  Non-U.S. investments carry potential risks not associated with U.S. investments. Such risks include, but are not limited to: (1) currency exchange rate fluctuations, (2) political and financial instability, (3) less liquidity and greater volatility, (4) lack of uniform accounting, auditing and financial reporting standards, (5) increased price volatility, and (6) less government regulation and supervision of foreign stock exchanges, brokers and listed companies.

Futures Contracts Risk

Futures contracts are a type of derivative investment. A derivative refers to any financial instrument whose value is derived, at least in part, from the price of another security or a specified index, asset or rate. The use of derivatives presents risks different from, and possibly greater than, the risks associated with investing directly in traditional securities. Gains or losses in a derivative may be magnified and may be much greater than the derivatives original cost.

There may be an imperfect correlation between the changes in market value of the securities held by the Fund and the prices of futures contracts. There may not be a liquid secondary market for the futures contract. When the Fund purchases or sells a futures contract, it is subject to daily variation margin calls that could be substantial in the event of adverse price movements. If the Fund has insufficient cash to meet daily variation margin requirements, it might need to sell securities at a time when such sales are disadvantageous.

Investment Risk

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. Therefore, you may lose money by investing in the Fund.

Issuer Risk

The value of a security may decline for a number of reasons which directly relate to the issuer, such as management performance, financial leverage and reduced demand for the issuer’s goods or services, as well as the historical and prospective earnings of the issuer and the value of its assets.

Market Events Risk

Turbulence in financial markets and reduced liquidity in equity, credit and fixed-income markets may negatively affect many issuers worldwide which could adversely affect the Fund.

Market Risk

Market risks, including political, regulatory, market and economic developments, and developments that impact specific economic sectors, industries or segments of the market, can affect the value of the Fund’s shares. The Fund’s equity investments are subject to stock market risk, which involves the possibility that the value of the Fund’s investments in stocks will decline due to drops in the stock market. 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 holdings to meet redemption requests or other cash needs, the Fund may have to sell them at a loss.

Securities Lending Risk

To the extent the Fund lends its securities, it may be subject to the following risks. Borrowers of the Fund’s securities typically provide collateral in the form of cash that is reinvested in securities. The securities in which the collateral is invested may not perform sufficiently to cover the return collateral payments owed to borrowers. In addition, delays may occur in the recovery of securities from borrowers, which could interfere with the Fund’s ability to vote proxies or to settle transactions.

Securities Selection Risk

Securities selected by the Manager or 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.

Small Capitalization Companies Risk

Investing in the securities of small capitalization companies involves greater risk and the possibility of greater price volatility than investing in larger capitalization and more established companies, since small 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.

Value Stocks Risk

Value stocks are subject to the risk that their intrinsic value may never be realized by the market or that their prices may 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.

Fund Performance

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® Small-Cap Value Funds Index, a composite of mutual funds comparable to the Fund.

The chart and the table below show the performance of the Fund’s Investor Class shares for all periods. The Fund began operations of Investor Class and Y Class shares on November 15, 2011.  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.

Total Return for the Calendar Year Ended 12/31 of each Year

Calendar year total returns for Investor Class shares

Highest Quarterly Return:	10.71%
(11/15/11 through 12/31/12)	(1st Quarter 2012)
Lowest Quarterly Return:	-5.17%
(11/15/11 through 12/31/12)	(2nd Quarter 2012)

Average Annual Total Returns For the periods ended December 31, 2012

Average Annual Returns American Beacon Small Cap Value II Fund		1 Year	Since Inception	Inception Date
Investor Class	[1]	13.13%	11.29%	Nov. 15, 2011
Y Class	[1]	13.42%	11.62%	Nov. 15, 2011
After Taxes on Distributions Investor Class	[1]	12.47%	10.68%
After Taxes on Distributions and Sales Investor Class	[1]	8.57%	9.27%
Russell 2000 Value Index	[1]	18.05%	19.57%
Lipper Small-Cap Value Funds	[1]	15.56%	13.81%

[1] The Total Annual Fund Operating Expenses do not correlate to the ratio of expenses to average net assets provided in the Fund's Financial Highlights table, which reflects the operating expenses of the Fund and does not include Acquired Fund Fees and Expenses.

[2] The Manager has contractually agreed to reduce and/or reimburse the Y Class and Investor Class of the Fund for Other Expenses, as applicable, through February 28, 2014 to the extent that Total Annual Fund Operating Expenses exceed 1.09% for the Y Class, and 1.37% for the Investor Class. 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.

[1] 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.

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American Beacon Small Cap Value Fund | American Beacon Small Cap Value Fund

American Beacon Small Cap Value Fund

Investment Objective

The Fund’s investment objective is long-term capital appreciation and current income.

Fees and Expenses of the Fund

This table describes the fees and expenses that you may pay if you buy and hold shares of the Fund. You may qualify for sales discounts if you and your eligible family members invest, or agree to invest in the future, at least $50,000 in 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 101 of the Prospectus and “Additional Purchase and Sale Information for A Class Shares” on page 78 of the statement of additional information.

Shareholder Fees (fees paid directly from your investment)

Shareholder Fees American Beacon Small Cap Value Fund	A Class	C Class	Y Class	Advisor Class	Institutional Class	Investor Class	Retirement Class
Maximum sales charge imposed on purchases (as a percentage of offering price)	5.75%	none	none	none	none	none	none
Maximum deferred sales charge load (as a percentage of the lower of original offering price or redemption proceeds)	none	1.00%	none	none	none	none	none

Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)

Annual Fund Operating Expenses American Beacon Small Cap Value Fund		A Class	C Class	Y Class	Advisor Class	Institutional Class	Investor Class	Retirement Class
Management fees		0.46%	0.46%	0.46%	0.46%	0.46%	0.46%	0.46%
Distribution and/or service (12b-1) fees		0.25%	1.00%	none	0.25%	none	none	0.50%
Other expenses		0.73%	0.75%	0.45%	0.61%	0.36%	0.72%	0.67%
Acquired Fund Fees and Expenses		0.10%	0.10%	0.10%	0.10%	0.10%	0.10%	0.10%
Total annual fund operating expenses	[1]	1.54%	2.31%	1.01%	1.42%	0.92%	1.28%	1.73%
Expense Reduction and Reimbursement		0.12%	0.14%
Total annual fund operating expenses after expense reduction and reimbursement	[2]	1.42%	2.17%

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 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:

Expense Example American Beacon Small Cap Value Fund (USD $)	1 year	3 years	5 years	10 years
A Class	711	1,021	1,355	2,294
C Class	320	708	1,223	2,636
Y Class	103	321	557	1,235
Advisor Class	145	450	777	1,703
Institutional Class	94	294	510	1,132
Investor Class	130	405	701	1,544
Retirement Class	176	546	940	2,042

Assuming no redemption of shares:

Expense Example No Redemption (USD $)	1 year	3 years	5 years	10 years
American Beacon Small Cap Value Fund C Class	220	708	1,223	2,636

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 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 51% of the average value of its portfolio.

Principal Investment Strategies

Under normal circumstances, at least 80% of the Fund’s net assets (plus the amount of any borrowings for investment purposes) are invested in equity securities of small market capitalization U.S. companies. These companies have market capitalizations of $4 billion or less at the time of investment. The Fund’s investments may include common stocks, preferred stocks, securities convertible into common stocks, real estate investment trusts (“REITs”), American Depositary Receipts (“ADRs”) and U.S. dollar-denominated foreign stocks trading on U.S. exchanges (collectively, “stocks”).

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 reducing volatility and downside risk.

The sub-advisors select stocks that, in their opinion, have most or all of the following characteristics (relative to the Russell 2000® Index):

u above-average earnings growth potential,

u below-average price to earnings ratio, and

u below-average price to book value ratio.

Each of the 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.

The Fund may invest cash balances in money market funds and may purchase and sell futures contracts to gain market exposure on cash balances or reduce market exposure in anticipation of liquidity needs.

The Fund may lend its securities to broker-dealers and other institutions to earn additional income.

Principal Risks

There is no assurance that the Fund will achieve its investment objective and you could lose part or all of your investment in the Fund. The Fund is not designed for investors who need an assured level of income and is intended to be a long-term investment. The Fund is not a complete investment program and may not be appropriate for all investors. Investors should carefully consider their own investment goals and risk tolerance before investing in the Fund. The principal risks of investing in the Fund are:

Equity Investments Risk

Equity securities generally are sinvesting in the Fund areubject to market risk. The Fund’s investments in equity securities may include common stocks, preferred stocks, securities convertible into or exchangeable for common stocks, REITs, ADRs and U.S. dollar-denominated foreign stocks traded on U.S. exchanges. Such investments may expose the Fund to additional risks.

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 traded on U.S. exchanges are subject to certain of the risks associated with investing directly in foreign securities. 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.

Foreign Exposure Risk

 The Fund may invest in securities issued by foreign companies through ADRs and U.S. dollar-denominated foreign stocks trading on U.S. exchanges. ADRs 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. Non-U.S. investments carry potential risks not associated with U.S. investments. Such risks include, but are not limited to: (1) currency exchange rate fluctuations, (2) political and financial instability, (3) less liquidity and greater volatility, (4) lack of uniform accounting, auditing and financial reporting standards, (5) increased price volatility, and (6) less government regulation and supervision of foreign stock exchanges, brokers and listed companies.

Futures Contracts Risk

Futures contracts are a type of derivative investment. A derivative refers to any financial instrument whose value is derived, at least in part, from the price of another security or a specified index, asset or rate. The use of derivatives presents risks different from, and possibly greater than, the risks associated with investing directly in traditional securities. Gains or losses in a derivative may be magnified and may be much greater than the derivatives original cost.

There may be an imperfect correlation between the changes in market value of the securities held by the Fund and the prices of futures contracts. There may not be a liquid secondary market for the futures contract. When the Fund purchases or sells a futures contract, it is subject to daily variation margin calls that could be substantial in the event of adverse price movements. If the Fund has insufficient cash to meet daily variation margin requirements, it might need to sell securities at a time when such sales are disadvantageous.

Investment Risk

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. Therefore, you may lose money by investing in the Fund.

Issuer Risk

The value of a security may decline for a number of reasons which directly relate to the issuer, such as management performance, financial leverage and reduced demand for the issuer’s goods or services, as well as the historical and prospective earnings of the issuer and the value of its assets.

Market Events Risk

Turbulence in financial markets and reduced liquidity in equity, credit and fixed-income markets may negatively affect many issuers worldwide which could adversely affect on the Fund.

Market Risk

Market risks, including political, regulatory, market and economic developments, and developments that impact specific economic sectors, industries or segments of the market, can affect the value of the Fund’s shares. The Fund’s equity investments are subject to stock market risk, which involves the possibility that the value of the Fund’s investments in stocks will decline due to drops in the stock market. From time to time, certain investments 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 holdings to meet redemption requests or other cash needs, the Fund may have to sell them at a loss.

Securities Lending Risk

To the extent the Fund lends its securities, it may be subject to the following risks. Borrowers of the Fund’s securities typically provide collateral in the form of cash that is reinvested in securities. The securities in which the collateral is invested may not perform sufficiently to cover the return collateral payments owed to borrowers. In addition, delays may occur in the recovery of securities from borrowers, which could interfere with the Fund’s ability to vote proxies or to settle transactions.

Securities Selection Risk

Securities selected by the Manager or 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.

Small Capitalization Companies Risk

Investing in the securities of small capitalization companies involves greater risk and the possibility of greater price volatility than investing in larger capitalization and more established companies, since small 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.

Value Stocks Risk

Value stocks are subject to the risk that their intrinsic value may never be realized by the market or that their prices may 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.

Fund Performance

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® Small-Cap Value Funds Index, a composite of mutual funds comparable to the Fund.

The chart and the table below show the performance of the Fund’s Institutional Class shares for all periods. The Fund began operations of Advisor Class shares on May 1, 2003, 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 Investor Class shares is shown for Advisor Class, A Class and C Class shares and the performance of Institutional Class shares is shown for Y Class shares prior to the dates that the newer class shares were first offered. For Retirement Class shares, performance results before May 1, 2003 are for Investor Class shares and performance results from May 1, 2003 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.

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.

Total Return for the Calendar Year Ended 12/31 of each Year

Calendar year total returns for Institutional Class shares

Highest Quarterly Return:	24.86%
(1/1/03 through 12/31/12)	(2nd Quarter 2003)
Lowest Quarterly Return:	-25.63%
(1/1/03 through 12/31/12)	(4th Quarter 2008)

Average Annual Total Returns For the periods ended December 31, 2012

Average Annual Returns American Beacon Small Cap Value Fund		1 Year	5 Years	10 Years	Inception Date
Institutional Class	[1]	16.52%	5.39%	10.71%	Dec. 31, 1998
A Class	[1]	15.91%	4.92%	10.32%	May 17, 2010
C Class	[1]	15.05%	4.53%	10.12%	Sep. 01, 2010
Y Class	[1]	16.39%	5.27%	10.65%	Aug. 03, 2009
Investor Class	[1]	16.08%	5.02%	10.37%	Feb. 28, 1999
Advisor Class	[1]	15.91%	4.86%	10.14%	May 01, 2003
Retirement Class	[1]	15.58%	4.66%	10.03%	May 01, 2009
After Taxes on Distributions Institutional Class	[1]	15.57%	5.09%	9.80%
After Taxes on Distributions and Sales Institutional Class	[1]	11.35%	4.54%	9.20%
Russell 2000 Value Index	[1]	18.05%	3.55%	9.50%
Lipper Small-Cap Value Funds Index	[1]	15.56%	4.33%	10.20%

[1] The Total Annual Fund Operating Expenses do not correlate to the ratio of expenses to average net assets provided in the Fund's Financial Highlights table, which reflects the operating expenses of the Fund and does not include Acquired Fund Fees and Expenses.

[2] The Manager has contractually agreed to reduce and/or reimburse the A Class and C Class of the Fund for Other Expenses, as applicable, through February 28, 2014 to the extent that Total Annual Fund Operating Expenses exceed 1.32% for the A Class and 2.07% 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.

[1] 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.

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American Beacon Small Cap Value Fund | American Beacon Small Cap Value Fund

American Beacon Small Cap Value Fund

Fees and Expenses of the Fund

This table describes the fees and expenses that you may pay if you buy and hold shares of the Fund.

Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)

Annual Fund Operating Expenses		American Beacon Small Cap Value Fund AMR Class
Management fees		0.46%
Distribution and/or service (12b-1) fees		none
Other expenses		0.10%
Acquired Fund Fees and Expenses		0.10%
Total annual fund operating expenses	[1]	0.66%

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 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:

Expense Example (USD $)	1 year	3 years	5 years	10 years
American Beacon Small Cap Value Fund AMR Class	67	210	367	822

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 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 51% of the average value of its portfolio.

Principal Investment Strategies

Under normal circumstances, at least 80% of the Fund’s net assets (plus the amount of any borrowings for investment purposes) are invested in equity securities of small market capitalization U.S. companies. These companies have market capitalizations of $4 billion or less at the time of investment. The Fund’s investments may include common stocks, preferred stocks, securities convertible into common stocks, real estate investment trusts (“REITs”), American Depositary Receipts (“ADRs”) and U.S. dollar-denominated foreign stocks trading on U.S. exchanges (collectively, “stocks”).

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 reducing volatility and downside risk.

The sub-advisors select stocks that, in their opinion, have most or all of the following characteristics (relative to the Russell 2000® Index):

u above-average earnings growth potential,

u below-average price to earnings ratio, and

u below-average price to book value ratio.

Each of the 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.

The Fund may invest cash balances in money market funds and may purchase and sell futures contracts to gain market exposure on cash balances or reduce market exposure in anticipation of liquidity needs.

The Fund may lend its securities to broker-dealers and other institutions to earn additional income.

Principal Risks

There is no assurance that the Fund will achieve its investment objective and you could lose part or all of your investment in the Fund. The Fund is not designed for investors who need an assured level of income and is intended to be a long-term investment. The Fund is not a complete investment program and may not be appropriate for all investors. Investors should carefully consider their own investment goals and risk tolerance before investing in the Fund. The principal risks of investing in the Fund are:

Equity Investments Risk

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, REITs, ADRs and U.S. dollar-denominated foreign stocks traded on U.S. exchanges Such investments may expose the Fund to additional risks.

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 traded on U.S. exchanges are subject to certain of the risks associated with investing directly in foreign securities. 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.

Foreign Exposure Risk

The Fund may invest in securities issued by foreign companies through ADRs and U.S. dollar-denominated foreign stocks trading on U.S. exchanges. ADRs 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 stocks.  Non-U.S. investments carry potential risks not associated with U.S. investments. Such risks include, but are not limited to: (1) currency exchange rate fluctuations, (2) political and financial instability, (3) less liquidity and greater volatility, (4) lack of uniform accounting, auditing and financial reporting standards, (5) increased price volatility, and (6) less government regulation and supervision of foreign stock exchanges, brokers and listed companies.

Futures Contracts Risk

Futures contracts are a type of derivative investment. A derivative refers to any financial instrument whose value is derived, at least in part, from the price of another security or a specified index, asset or rate. The use of derivatives presents risks different from, and possibly greater than, the risks associated with investing directly in traditional securities. Gains or losses in a derivative may be magnified and may be much greater than the derivatives original cost.

There may be an imperfect correlation between the changes in market value of the securities held by the Fund and the prices of futures contracts. There may not be a liquid secondary market for the futures contract. When the Fund purchases or sells a futures contract, it is subject to daily variation margin calls that could be substantial in the event of adverse price movements. If the Fund has insufficient cash to meet daily variation margin requirements, it might need to sell securities at a time when such sales are disadvantageous.

Investment Risk

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. Therefore, you may lose money by investing in the Fund.

Issuer Risk

The value of a security may decline for a number of reasons which directly relate to the issuer, such as management performance, financial leverage and reduced demand for the issuer’s goods or services, as well as the historical and prospective earnings of the issuer and the value of its assets.

Market Events Risk

Turbulence in financial markets and reduced liquidity in equity, credit and fixed-income markets may negatively affect many issuers worldwide which could adversely affect the Fund.

Market Risk

Market risks, including political, regulatory, market and economic developments and developments that impact specific economic sectors, industries or segments of the market, can affect the value of the Fund’s shares.  The Fund’s equity investments are subject to stock market risk, which  involves the possibility that the value of the Fund’s investments in stocks will decline due to drops in the stock market.  From time to time, certain investments 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 holdings to meet redemption requests or other cash needs, the Fund may have to sell them at a loss.

Securities Lending Risk

To the extent the Fund lends its securities, it may be subject to the following risks. Borrowers of the Fund’s securities typically provide collateral in the form of cash that is reinvested in securities. The securities in which the collateral is invested may not perform sufficiently to cover the return collateral payments owed to borrowers. In addition, delays may occur in the recovery of securities from borrowers, which could interfere with the Fund’s ability to vote proxies or to settle transactions.

Securities Selection Risk

Securities selected by the Manager or 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.

Small Capitalization Companies Risk

Investing in the securities of small capitalization companies involves greater risk and the possibility of greater price volatility than investing in larger capitalization and more established companies, since small 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.

Value Stocks Risk

Value stocks are subject to the risk that their intrinsic value may never be realized by the market or that their prices may 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.

Fund Performance

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® Small-Cap Value Funds Index, a composite of mutual funds comparable to the Fund. You may obtain updated performance information on the Fund’s website at www.americanbeaconfunds.com. Past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future.

Total Return for the Calendar Year Ended 12/31 of each Year

Highest Quarterly Return:	24.93%
(1/1/03 through 12/31/12)	(2nd Quarter 2003)
Lowest Quarterly Return:	-25.60%
(1/1/03 through 12/31/12)	(4th Quarter 2008)

Average Annual Total Returns For the periods ended December 31, 2012

Average Annual Returns American Beacon Small Cap Value Fund	1 Year	5 Years	10 Years
AMR Class	16.81%	5.65%	10.99%
Russell 2000 Value Index	18.05%	3.55%	9.50%
Lipper Small-Cap Value Funds Index	15.56%	4.33%	10.20%

[1] The Total Annual Fund Operating Expenses do not correlate to the ratio of expenses to average net assets provided in the Fund's Financial Highlights table, which reflects the operating expenses of the Fund and does not include Acquired Fund Fees and Expenses.

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American Beacon Balanced Fund | American Beacon Balanced Fund

American Beacon Balanced Fund

Investment Objective

The Fund’s investment objective is income and capital appreciation.

Fees and Expenses of the Fund

This table describes the fees and expenses that you may pay if you buy and hold shares of the Fund.

Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)

Annual Fund Operating Expenses		American Beacon Balanced Fund AMR Class
Management fees		0.22%
Distribution and/or service (12b-1) fees		none
Other expenses		0.10%
Acquired Fund Fees and Expenses		0.01%
Total annual fund operating expenses	[1]	0.33%

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 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:

Expense Example (USD $)	1 year	3 years	5 years	10 years
American Beacon Balanced Fund AMR Class	34	106	186	418

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 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 58% of the average value of its portfolio.

Principal Investment Strategies

Under normal circumstances, between 50% and 70% of the Fund’s total assets are invested in equity securities and between 30% and 50% of the Fund’s total assets are invested in debt securities.

The Fund’s equity investments may include common stocks, preferred stocks, securities convertible into common stocks, real estate investment trusts (“REITs”), American Depositary Receipts (“ADRs”) and U.S. dollar-denominated foreign stocks traded on U.S. exchanges (collectively referred to as “stocks”). The Fund may invest in companies of all market capitalizations.

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 reducing volatility and downside risk.

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):

u above-average earnings growth potential,

u below-average price to earnings ratio,

u below-average price to book value ratio, and

u above-average dividend yields.

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.

The Fund’s debt securities may include: obligations of the U.S. Government, its agencies and instrumentalities, including U.S. Government-sponsored enterprises (some of which are not backed by the full faith and credit of the U.S. Government); U.S. and U.S. dollar-denominated foreign corporate debt securities, such as notes and bonds, mortgage-backed securities; asset-backed securities; master-demand notes and other debt securities. The Fund will only buy debt securities that are deemed by the Manager or sub-advisors, as applicable, to be investment grade at the time of the purchase. If an investment held by the Fund is downgraded below investment grade, the Manager or sub-advisors, as applicable, will take action that they believe to be advantageous to the Fund. The Fund has no limitations regarding the maturities of the debt securities it can buy.

In determining which debt securities to buy and sell, the Manager and the sub-advisors generally use a “top-down” or “bottom-up” investment strategy, or a combination of both strategies. The top-down fixed-income investment strategy is implemented as follows:

● Develop an overall investment strategy, including a portfolio duration target, by examining the current trends in the U.S. economy.

● 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.

● Determine the weightings of each security type by analyzing the difference in yield spreads between corporate and U.S. Government securities.

● Select specific debt securities within each security type.

● Review and monitor portfolio composition for changes in credit, risk-return profile and comparisons with benchmarks.

The bottom-up fixed-income investment strategy is implemented as follows:

● Search for eligible securities with a yield to maturity advantage versus a U.S. Government security with a similar maturity.

● Evaluate credit quality of the securities.

● Perform an analysis of the expected price volatility of the securities to changes in interest rates by examining actual price volatility between U.S. Government and non-U.S. Government securities.

The Fund may invest cash balances in other investment companies and may purchase and sell futures contracts to gain market exposure on cash balances or reduce market exposure in anticipation of liquidity needs.

Principal Risks

There is no assurance that the Fund will achieve its investment objective and you could lose part or all of your investment in the Fund. The Fund is not designed for investors who need an assured level of income and is intended to be a long-term investment. The Fund is not a complete investment program and may not be appropriate for all investors. Investors should carefully consider their own investment goals and risk tolerance before investing in the Fund. The principal risks of investing in the Fund are:

Credit Risk

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’s credit rating can cause the price of its bonds to go down.

Equity Investments Risk

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, REITs, ADRs and U.S. dollar denominated foreign stocks trading on U.S. exchanges. Such investments may expose the Fund to additional risks.

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 traded 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.

Foreign Exposure Risk

The Fund may invest in securities issued by foreign companies through ADRs and U.S. dollar-denominated foreign stocks trading on U.S. exchanges. ADRs 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. The Fund may also invest in U.S. dollar-denominated bonds issued by foreign companies or foreign governments. Non U.S. investments carry potential risks not associated with U.S. investments. Such risks include, but are not limited to: (1) currency exchange rate fluctuations, (2) political and financial instability, (3) less liquidity and greater volatility, (4) lack of uniform accounting, auditing and financial reporting standards; (5) increased price volatility; and (6) less government regulation and supervision of foreign stock exchanges, brokers and listed companies.

Futures Contracts Risk

Futures contracts are a type of derivative investment. A derivative refers to any financial instrument whose value is derived, at least in part, from the price of another security or a specified index, asset or rate. The use of derivatives presents risks different from, and possibly greater than, the risks associated with investing directly in traditional securities. Gains or losses in a derivative may be magnified and may be much greater than the derivatives original cost.

There may be an imperfect correlation between the changes in market value of the securities or other underlying assets held by the Fund and the prices of futures contracts. There may not be a liquid secondary market for the futures contract. When the Fund purchases or sells a futures contract, it is subject to daily variation margin calls that could be substantial in the event of adverse price movements. If the Fund has insufficient cash to meet daily variation margin requirements, it might need to sell securities at a time when such sales are disadvantageous.

Government-Sponsored Enterprises Risk

Securities held by the Fund that are issued by government-sponsored enterprises, such as the Federal National Mortgage Association (“Fannie Mae”), the Federal Home Loan Mortgage Corporation (“Freddie Mac”), 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.

Interest Rate Risk

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.

Investment Risk

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. Therefore, you may lose money by investing in the Fund.

Issuer Risk

The value of a security may decline for a number of reasons which directly relate to the issuer, such as management performance, financial leverage and reduced demand for the issuer’s goods or services, as well as the historical and prospective earnings of the issuer and the value of its assets.

Large Capitalization Companies Risk

The securities of large market capitalization companies may underperform other segments of the market because such companies may be less responsive to competitive challenges and opportunities and may be unable to attain high growth rates during periods of economic expansion.

Market Events Risk

Turbulence in financial markets and reduced liquidity in equity, credit and fixed-income markets may negatively affect many issuers worldwide which could adversely affect the Fund.

Market Risk

Market risks, including political, regulatory, market and economic developments, and developments that impact specific economic sectors, industries or segments of the market, can affect the value of the Fund’s shares. The Fund’s equity investments are subject to stock market risk, which involves the possibility that the value of the Fund’s investments in stocks will decline due to drops in the stock market. The Fund’s fixed-income investments are subject to the risk that the lack of liquidity or other adverse credit market conditions may hamper the Fund’s ability to purchase and sell the securities. From time to time, certain investments 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 holdings to meet redemption requests or other cash needs, the Fund may have to sell them at a loss.

Other Investment Companies Risk

The Fund may invest in shares of other registered investment companies, including open end funds and money market funds. To the extent that the Fund invests in shares of other registered investment companies, you will indirectly bear fees and expenses charged by the underlying funds in addition to the Fund’s direct fees and expenses and will be subject to the risks associated with investments in those funds.

Prepayment and Extension Risk

The Fund’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’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’s effective maturity and a decline in its price.

Securities Selection Risk

Securities selected by the Manager or 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.

Small and Medium Capitalization Companies Risk

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.

U.S. Government Securities Risk

A security backed by the U.S. Treasury or the full faith and credit of the United States is guaranteed only as to the timely payment of interest and principal when held to maturity. The market prices for such securities are not guaranteed and will fluctuate. They are also subject to credit risk and interest rate risk.

Value Stocks Risk

Value stocks are subject to the risk that their intrinsic value may never be realized by the market or that their prices may 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.

Fund Performance

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 the Russell 1000® Value Index, which is the Fund’s primary benchmark. The table also shows how the Fund’s returns compare to the Barclays® Capital U.S. Aggregate Bond Index, which tracks the performance of fixed-rate debt securities. The Balanced Composite Index is composed of the Russell 1000 Value Index (60%) and the Barclays Capital U.S. Aggregate Bond Index (40%) to reflect the Fund’s allocation of its assets between equity securities and fixed-income securities. The Lipper® MTAG Funds Index shows how the Fund’s performance compares to a composite of mutual funds with similar investment objectives. 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.

Total Return for the Calendar Year Ended 12/31 of each Year

Highest Quarterly Return:	13.75%
(1/1/03 through 12/31/12)	(2nd Quarter 2003)
Lowest Quarterly Return:	-11.03%
(1/1/03 through 12/31/12)	(4th Quarter 2008)

Average Annual Total Returns For the periods ended December 31, 2012

Average Annual Returns American Beacon Balanced Fund	1 Year	5 Years	10 Years
AMR Class	14.52%	3.62%	7.72%
Russell 1000 Value Index	17.51%	0.59%	7.38%
Barclays Capital U.S. Aggregate Bond Index	4.21%	5.95%	5.18%
Balanced Composite Index	12.17%	3.21%	6.83%
Lipper MTAG Funds Index	(13.67%)	2.65%	6.96%

[1] The Total Annual Fund Operating Expenses do not correlate to the ratio of expenses to average net assets provided in the Fund's Financial Highlights table, which reflects the operating expenses of the Fund and does not include Acquired Fund Fees and Expenses.

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American Beacon Large Cap Value Fund | American Beacon Large Cap Value Fund

American Beacon Large Cap Value Fund

Investment Objective

The Fund’s investment objective is long-term capital appreciation and current income.

Fees and Expenses of the Fund

This table describes the fees and expenses that you may pay if you buy and hold shares of the Fund. You may qualify for sales discounts if you and your eligible family members invest, or agree to invest in the future, at least $50,000 in 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 101 of the Prospectus and “Additional Purchase and Sale Information for A Class Shares” on page 78 of the statement of additional information.

Shareholder fees (fees paid directly from your investment)

Shareholder Fees American Beacon Large Cap Value Fund	A Class	C Class	Y Class	Advisor Class	Institutional Class	Investor Class	Retirement Class
Maximum sales charge imposed on purchases (as a percentage of offering price)	5.75%	none	none	none	none	none	none
Maximum deferred sales charge load (as a percentage of the lower of original offering price or redemption proceeds)	none	1.00%	none	none	none	none	none

Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)

Annual Fund Operating Expenses American Beacon Large Cap Value Fund		A Class	C Class	Y Class	Advisor Class	Institutional Class	Investor Class	Retirement Class
Management fees		0.24%	0.24%	0.24%	0.24%	0.24%	0.24%	0.24%
Distribution and/or service (12b-1) fees		0.25%	1.00%	none	0.25%	none	none	0.50%
Other expenses		0.63%	0.64%	0.45%	0.59%	0.35%	0.72%	0.67%
Acquired Fund Fees and Expenses		0.01%	0.01%	0.01%	0.01%	0.01%	0.01%	0.01%
Total annual fund operating expenses	[1]	1.13%	1.89%	0.70%	1.09%	0.60%	0.97%	1.43%

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 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:

Expense Example American Beacon Large Cap Value Fund (USD $)	1 year	3 years	5 years	10 years
A Class	684	914	1,162	1,871
C Class	292	594	1,021	2,212
Y Class	72	225	391	871
Advisor Class	111	346	601	1,329
Institutional Class	61	192	335	750
Investor Class	99	309	536	1,189
Retirement Class	146	453	782	1,714

Assuming no redemption of shares:

Expense Example No Redemption (USD $)	1 year	3 years	5 years	10 years
American Beacon Large Cap Value Fund C Class	192	594	1,021	2,212

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 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 30% of the average value of its portfolio.

Principal Investment Strategies

Under normal circumstances, at least 80% of the Fund’s net assets (plus the amount of any borrowings for investment purposes) are invested in equity securities of large market capitalization U.S. companies. These companies have market capitalizations within the market capitalization range 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, 2012, the market capitalizations of the companies in the Russell 1000 Index ranged from $313 million to $498 billion.

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 (“ADRs”) and U.S. dollar-denominated foreign stocks trading on U.S. exchanges (collectively referred to as “stocks”).

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 reducing volatility and downside risk.

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):

u above-average earnings growth potential,

u below-average price to earnings ratio,

u below-average price to book value ratio, and

u above-average dividend yields.

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 sub-advisors typically seek to invest in companies that they believe are undervalued at the time of purchase. 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.

The Fund may invest cash balances in money market funds and may purchase and sell futures contracts to gain market exposure on cash balances or reduce market exposure in anticipation of liquidity needs.

Principal Risks

There is no assurance that the Fund will achieve its investment objective and you could lose part or all of your investment in the Fund. The Fund is not designed for investors who need an assured level of income and is intended to be a long-term investment. The Fund is not a complete investment program and may not be appropriate for all investors. Investors should carefully consider their own investment goals and risk tolerance before investing in the Fund. The principal risks of investing in the Fund are:

Equity Investments Risk

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, REITs, ADRs and U.S. dollar-denominated foreign stocks traded on U.S. exchanges. Such investments may expose the Fund to additional risks.

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 traded 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.

Foreign Exposure Risk

The Fund may invest in securities issued by foreign companies through ADRs and U.S. dollar-denominated foreign stocks trading on U.S. exchanges. ADRs 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. Non-U.S. investments carry potential risks not associated with U.S. investments. Such risks include, but are not limited to: (1) currency exchange rate fluctuations, (2) political and financial instability, (3) less liquidity and greater volatility, (4) lack of uniform accounting, auditing and financial reporting standards, (5) increased price volatility, and (6) less government regulation and supervision of foreign stock exchanges, brokers and listed companies.

Futures Contracts Risk

Futures contracts are a type of derivative investment. A derivative refers to any financial instrument whose value is derived, at least in part, from the price of another security or a specified index, asset or rate. The use of derivatives presents risks different from, and possibly greater than, the risks associated with investing directly in traditional securities. Gains or losses in a derivative may be magnified and may be much greater than the derivatives original cost.

There may be an imperfect correlation between the changes in market value of the securities held by the Fund and the prices of futures contracts. There may not be a liquid secondary market for the futures contract. When the Fund purchases or sells a futures contract, it is subject to daily variation margin calls that could be substantial in the event of adverse price movements. If the Fund has insufficient cash to meet daily variation margin requirements, it might need to sell securities at a time when such sales are disadvantageous.

Investment Risk

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. Therefore, you may lose money by investing in the Fund.

Issuer Risk

The value of a security may decline for a number of reasons which directly relate to the issuer, such as management performance, financial leverage and reduced demand for the issuer’s goods or services, as well as the historical and prospective earnings of the issuer and the value of its assets.

Large Capitalization Companies Risk

The securities of large market capitalization companies may underperform other segments of the market because such companies may be less responsive to competitive challenges and opportunities and may be unable to attain high growth rates during periods of economic expansion.

Market Events Risk

Turbulence in financial markets and reduced liquidity in equity, credit and fixed-income markets may negatively affect many issuers worldwide which could adversely affect the Fund.

Market Risk

Market risks, including political, regulatory, market and economic developments, and developments that impact specific economic sectors, industries or segments of the market, can affect the value of the Fund’s shares. The Fund’s equity investments are subject to stock market risk, which involves the possibility that the value of the Fund’s investments in stocks will decline due to drops in the stock market. From time to time, certain investments 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 holdings to meet redemption requests or other cash needs, the Fund may have to sell them at a loss.

Securities Selection Risk

Securities selected by the Manager or 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.

Value Stocks Risk

Value stocks are subject to the risk that their intrinsic value may never be realized by the market or that their prices may 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.

Fund Performance

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.

The chart and the table below show the performance of the Fund’s Institutional Class shares for all periods. The Fund began operations of 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.

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.

Total Return for the Calendar Year Ended 12/31 of each Year

Calendar year total returns for Institutional Class shares

Highest Quarterly Return:	19.92%
(1/1/03 through 12/31/12)	(2nd Quarter 2003)
Lowest Quarterly Return:	-21.54%
(1/1/0 through 12/31/12)	(4th Quarter 2008)

Average Annual Total Returns For the periods ended December 31, 2012

Average Annual Returns American Beacon Large Cap Value Fund		1 Year	5 Years	10 Years	Inception Date
Institutional Class	[1]	19.07%	0.59%	8.46%	Jul. 17, 1987
A Class	[1]	18.48%	0.17%	8.10%	May 17, 2010
C Class	[1]	17.54%	(0.20%)	7.90%	Sep. 01, 2010
Y Class	[1]	18.99%	0.52%	8.43%	Aug. 03, 2009
Advisor Class	[1]	18.52%	0.08%	7.98%	May 31, 2005
Investor Class	[1]	18.68%	0.24%	8.14%	Aug. 01, 1994
Retirement Class	[1]	18.05%	(0.15%)	7.86%	May 01, 2009
After Taxes on Distributions Institutional Class	[1]	18.16%	0.17%	7.94%
After Taxes on Distributions and Sales Institutional Class	[1]	12.40%	0.35%	7.36%
Russell 1000 Value Index	[1]	17.51%	0.59%	7.38%
Lipper Large-Cap Value Funds Index	[1]	15.87%	0.17%	6.41%

[1] The Total Annual Fund Operating Expenses do not correlate to the ratio of expenses to average net assets provided in the Fund's Financial Highlights table, which reflects the operating expenses of the Fund and does not include Acquired Fund Fees and Expenses.

[1] 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.

XML

Label

Element

Value

Risk/Return:

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Risk/Return [Heading]

rr_RiskReturnHeading

American Beacon Mid-Cap Value Fund

Objective [Heading]

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Investment Objective

Objective, Primary [Text Block]

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The Fund’s investment objective is long-term capital appreciation and current income.

Expense [Heading]

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Fees and Expenses of the Fund

Expense Narrative [Text Block]

rr_ExpenseNarrativeTextBlock

This table describes the fees and expenses that you may pay if you buy and hold shares of the Fund.

Shareholder Fees Caption [Text]

rr_ShareholderFeesCaption

Shareholder Fees (fees paid directly from your investment)

Operating Expenses Caption [Text]

rr_OperatingExpensesCaption

Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)

Portfolio Turnover [Heading]

rr_PortfolioTurnoverHeading

Portfolio Turnover

Portfolio Turnover [Text Block]

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The Fund pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when fund shares are held in a taxable account. These costs, which are not reflected in annual fund operating expenses or in the example, affect the Fund’s performance. During the most recent fiscal year, the Fund’s portfolio turnover rate was 87% of the average value of its portfolio.

Portfolio Turnover, Rate

rr_PortfolioTurnoverRate

87.00%

Expenses Not Correlated to Ratio Due to Acquired Fund Fees [Text]

rr_ExpensesNotCorrelatedToRatioDueToAcquiredFundFees

The Total Annual Fund Operating Expenses do not correlate to the ratio of expenses to average net assets provided in the Fund's Financial Highlights table, which reflects the operating expenses of the Fund and does not include Acquired Fund Fees and Expenses.

Expense Example [Heading]

rr_ExpenseExampleHeading

Example

Expense Example Narrative [Text Block]

rr_ExpenseExampleNarrativeTextBlock

This Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return each year and that the Fund’s operating expenses remain the same. Although your actual costs may be higher or lower, based on these assumptions, your costs would be:

Strategy [Heading]

rr_StrategyHeading

Principal Investment Strategies

Strategy Narrative [Text Block]

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Under normal circumstances, at least 80% of the Fund’s net assets (plus the amount of any borrowings for investment purposes) are invested in equity securities of middle market capitalization U.S. companies. These companies have market capitalizations within the market capitalization range of the companies in the Russell Midcap® Index at the time of investment. As of December 31, 2012 the market capitalizations of the companies in the Russell Midcap Index ranged from $313 million to $25 billion. 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 (“ADRs”) and U.S. dollar-denominated foreign stocks trading on U.S. exchanges (collectively referred to as “stocks”).

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 reducing volatility and downside risk.

In general, the sub-advisors select stocks that, in their opinion, have most or all of the following characteristics (relative to the Russell Midcap Index):

u above-average earnings growth potential,

u below-average price to earnings ratio,

u below-average price to book value ratio, and

u above-average dividend yields.

One sub-advisor invests in medium-sized companies with low price to earnings and price to book value ratios and high dividend yields in relation to the Russell Midcap Index. Through extensive research and meetings with company management teams, the sub-advisor seeks to identify companies that not only possess these three characteristics, but that also exhibit high or improving profitability translating into earnings growth above that of the overall Russell Midcap Index. The sub-advisor’s portfolio will generally consist of 35 to 45 stocks.

The second sub-advisor invests in medium-sized companies and intends to maintain a concentrated portfolio of 30 to 40 stocks selected from the most undervalued or “deep” value portion of its investment universe. That sub-advisor looks for companies within that universe that sell for a low price relative to normal earnings (with “normal earnings” defined as a 5 year estimate of what the company should earn in a normal environment based on research of the company’s history and the history of its industry).

The third sub-advisor utilizes a classic value-driven philosophy based on the belief that leading businesses selling at a discount to fair value have the potential to generate excess returns. The strategy focuses on stocks that are temporarily out of favor in the market; specifically, companies with higher returns on capital, free cash flow and strong balance sheets. These companies often dominate a particular industry niche, generally have significant barriers to entry and, as a result, are able to perpetuate a higher return on capital over time. 

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 security 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.

The Fund may invest cash balances in money market funds and may purchase and sell futures contracts to gain market exposure on cash balances or reduce market exposure in anticipation of liquidity needs.

Risk [Heading]

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Principal Risks

Risk Narrative [Text Block]

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There is no assurance that the Fund will achieve its investment objective and you could lose part or all of your investment in the Fund. The Fund is not designed for investors who need an assured level of income and is intended to be a long-term investment. The Fund is not a complete investment program and may not be appropriate for all investors. Investors should carefully consider their own investment goals and risk tolerance before investing in the Fund. The principal risks of investing in the Fund are:

Equity Investments Risk

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, REITs, ADRs, and U.S. dollar denominated foreign stocks traded on U.S. exchanges. Such investments may expose the Fund to additional risks.

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 traded 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.

Foreign Exposure Risk

The Fund may invest in securities issued by foreign companies through ADRs and U.S. dollar-denominated foreign stocks trading on U.S. exchanges. ADRs 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.  Non-U.S. investments carry potential risks not associated with U.S. investments. Such risks include, but are not limited to: (1) currency exchange rate fluctuations, (2) political and financial instability, (3) less liquidity and greater volatility, (4) lack of uniform accounting, auditing and financial reporting standards, (5) increased price volatility, and (6) less government regulation and supervision of foreign stock exchanges, brokers and listed companies.

Futures Contracts Risk

Futures contracts are a type of derivative investment. A derivative refers to any financial instrument whose value is derived, at least in part, from the price of another security or a specified index, asset or rate. The use of derivatives presents risks different from, and possibly greater than, the risks associated with investing directly in traditional securities. Gains or losses in a derivative may be magnified and may be much greater than the derivatives original cost.

There may be an imperfect correlation between the changes in market value of the securities held by the Fund and the prices of futures contracts. There may not be a liquid secondary market for the futures contract. When the Fund purchases or sells a futures contract, it is subject to daily variation margin calls that could be substantial in the event of adverse price movements. If the Fund has insufficient cash to meet daily variation margin requirements, it might need to sell securities at a time when such sales are disadvantageous.

High Portfolio Turnover Risk

Portfolio turnover is a measure of a Fund’s trading activity over a one year period. A portfolio turnover rate of 100% would indicate that a Fund sold and replaced the entire value of its securities holdings during the period. High portfolio turnover could increase a Fund’s transaction costs and possibly have a negative impact on performance. Frequent trading by a Fund could also result in increased short term capital gain distributions to shareholders, which are taxable as ordinary income.

Investment Risk

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. Therefore, you may lose money by investing in the Fund.

Issuer Risk

The value of a security may decline for a number of reasons which directly relate to the issuer, such as management performance, financial leverage and reduced demand for the issuer’s goods or services, as well as the historical and prospective earnings of the issuer and the value of its assets.

Market Events Risk

Turbulence in financial markets and reduced liquidity in equity, credit and fixed-income markets may negatively affect many issuers worldwide which could adversely affect the Fund.

Market Risk

Market risks, including political, regulatory, market and economic developments, and developments that impact specific economic sectors, industries or segments of the market, can affect the value of the Fund’s shares.  The Fund’s equity investments are subject to stock market risk, which  involves the possibility that the value of the Fund’s investments in stocks will decline due to drops in the stock market. From time to time, certain investments 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 holdings to meet redemption requests or other cash needs, the Fund may have to sell them at a loss.

Mid-Capitalization Companies Risk

Investing in the securities of medium capitalization companies involves greater risk and the possibility of greater price volatility than investing in larger capitalization companies and more established companies, since medium sized companies may have limited operating history, product lines and financial resources, the securities of these companies may lack sufficient market liquidity and can be sensitive to expected changes in interest rates, borrowing costs and earnings.

Securities Selection Risk

Securities selected by the Manager or 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.

Value Stocks Risk

Value stocks are subject to the risk that their intrinsic value may never be realized by the market or that their prices may 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.

Risk Lose Money [Text]

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There is no assurance that the Fund will achieve its investment objective and you could lose part or all of your investment in the Fund.

Risk Not Insured Depository Institution [Text]

rr_RiskNotInsuredDepositoryInstitution

An investment in the Fund is not a deposit of a bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.

Bar Chart and Performance Table [Heading]

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Fund Performance

Performance Narrative [Text Block]

rr_PerformanceNarrativeTextBlock

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 Mid-Cap Value Funds Index, a composite of mutual funds comparable to the Fund. You may obtain updated performance information on the Fund’s website at www.americanbeaconfunds.com. Past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future.

Performance Information Illustrates Variability of Returns [Text]

rr_PerformanceInformationIllustratesVariabilityOfReturns

The bar chart and table below provide an indication of risk by showing how the Fund's performance has varied from year to year.

Performance Availability Website Address [Text]

rr_PerformanceAvailabilityWebSiteAddress

www.americanbeaconfunds.com

Performance Past Does Not Indicate Future [Text]

rr_PerformancePastDoesNotIndicateFuture

Past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future.

Bar Chart [Heading]

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Total Return for the Calendar Year Ended 12/31 of each Year

Bar Chart Closing [Text Block]

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Highest Quarterly Return:	24.28%
(1/1/05 through 12/31/12)	(3rd Quarter 2009)
Lowest Quarterly Return:	-21.51%
(1/1/05 through 12/31/12)	(4th Quarter 2008)

Highest Quarterly Return, Label

rr_HighestQuarterlyReturnLabel

Highest Quarterly Return:

Highest Quarterly Return, Date

rr_BarChartHighestQuarterlyReturnDate

Sep. 30, 2009

Highest Quarterly Return

rr_BarChartHighestQuarterlyReturn

24.28%

Lowest Quarterly Return, Label

rr_LowestQuarterlyReturnLabel

Lowest Quarterly Return:

Lowest Quarterly Return, Date

rr_BarChartLowestQuarterlyReturnDate

Dec. 31, 2008

Lowest Quarterly Return

rr_BarChartLowestQuarterlyReturn

(21.51%)

Performance Table Heading

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Average Annual Total Returns For the periods ended December 31, 2012

Russell Midcap Value Index

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

(18.51%)

5 Years

rr_AverageAnnualReturnYear05

3.79%

Since Inception

rr_AverageAnnualReturnSinceInception

7.54%

Lipper® Mid-Cap Value Funds Index

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

18.32%

5 Years

rr_AverageAnnualReturnYear05

2.98%

Since Inception

rr_AverageAnnualReturnSinceInception

6.23%

AMR Class

Risk/Return:

rr_RiskReturnAbstract

Redemption Fee (as a percentage of Amount Redeemed)

rr_RedemptionFeeOverRedemption

(2.00%)

Management fees

rr_ManagementFeesOverAssets

0.58%

Distribution and/or service (12b-1) fees

rr_DistributionAndService12b1FeesOverAssets

none

Other expenses

rr_OtherExpensesOverAssets

0.20%

Acquired Fund Fees and Expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.01%

Total annual fund operating expenses

rr_ExpensesOverAssets

0.79%

^[1]

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

81

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

253

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

439

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

978

Annual Return 2005

rr_AnnualReturn2005

8.98%

Annual Return 2006

rr_AnnualReturn2006

18.29%

Annual Return 2007

rr_AnnualReturn2007

(4.87%)

Annual Return 2008

rr_AnnualReturn2008

(36.25%)

Annual Return 2009

rr_AnnualReturn2009

41.41%

Annual Return 2010

rr_AnnualReturn2010

22.00%

Annual Return 2011

rr_AnnualReturn2011

0.48%

Annual Return 2012

rr_AnnualReturn2012

16.27%

1 Year

rr_AverageAnnualReturnYear01

16.27%

5 Years

rr_AverageAnnualReturnYear05

5.14%

Since Inception

rr_AverageAnnualReturnSinceInception

6.96%

Inception Date

rr_AverageAnnualReturnInceptionDate

Jun. 30, 2004

[1] The Total Annual Fund Operating Expenses do not correlate to the ratio of expenses to average net assets provided in the Fund's Financial Highlights table, which reflects the operating expenses of the Fund and does not include Acquired Fund Fees and Expenses.

XML

Label

Element

Value

Risk/Return:

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Risk/Return [Heading]

rr_RiskReturnHeading

American Beacon Emerging Markets Fund

Objective [Heading]

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Investment Objective

Objective, Primary [Text Block]

rr_ObjectivePrimaryTextBlock

The Fund’s investment objective is long-term capital appreciation.

Expense [Heading]

rr_ExpenseHeading

Fees and Expenses of the Fund

Expense Narrative [Text Block]

rr_ExpenseNarrativeTextBlock

This table describes the fees and expenses that you may pay if you buy and hold shares of the Fund.

Shareholder Fees Caption [Text]

rr_ShareholderFeesCaption

Shareholder fees (fees paid directly from your investment)

Operating Expenses Caption [Text]

rr_OperatingExpensesCaption

Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)

Portfolio Turnover [Heading]

rr_PortfolioTurnoverHeading

Portfolio Turnover

Portfolio Turnover [Text Block]

rr_PortfolioTurnoverTextBlock

The Fund pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when fund shares are held in a taxable account. These costs, which are not reflected in annual fund operating expenses or in the example, affect the Fund’s performance. During the most recent fiscal year, the Fund’s portfolio turnover rate was 44% of the average value of its portfolio.

Portfolio Turnover, Rate

rr_PortfolioTurnoverRate

44.00%

Expenses Not Correlated to Ratio Due to Acquired Fund Fees [Text]

rr_ExpensesNotCorrelatedToRatioDueToAcquiredFundFees

The Total Annual Fund Operating Expenses do not correlate to the ratio of expenses to average net assets provided in the Fund's Financial Highlights table, which reflects the operating expenses of the Fund and does not include Acquired Fund Fees and Expenses.

Expense Example [Heading]

rr_ExpenseExampleHeading

Example

Expense Example Narrative [Text Block]

rr_ExpenseExampleNarrativeTextBlock

This Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return each year and that the Fund’s operating expenses remain the same. Although your actual costs may be higher or lower, based on these assumptions, your costs would be:

Strategy [Heading]

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Principal Investment Strategies

Strategy Narrative [Text Block]

rr_StrategyNarrativeTextBlock

Under normal circumstances, at least 80% of the Fund’s net assets (plus the amount of any borrowings for investment purposes) are invested in equity securities of issuers that:

u are primarily listed on the trading market of an emerging market country;

u are headquartered in an emerging market country; or

u derive 50% or more of their revenues from, or have 50% or more of their assets in, an emerging market country.

An emerging market country is one that:

● has an emerging stock market as defined by the International Finance Corporation;  

● has a low- to middle-income economy according to the World Bank;  

● is included in the IFC Investable Index or the Morgan Stanley Capital International® Emerging Markets Index; or  

● has a per-capita gross national product of $10,000 or less.

The Fund’s equity investments may include common stocks, preferred stocks, securities convertible into common stocks and depositary receipts (collectively referred to as “stocks”). The Fund may invest in companies of all market capitalizations.

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 reducing volatility and downside risk.

One sub-advisor combines a top-down country allocation investment approach with bottom-up stock selection. The sub-advisor first allocates its portion of the Fund’s assets among emerging market countries based on relative economic, political and social fundamentals, stock valuations and investor sentiment. The sub-advisor then selects individual securities within these countries on the basis of attractive growth characteristics, reasonable valuations and company managements with a strong shareholder value orientation. To attempt to manage risk, the sub-advisor emphasizes thorough macroeconomic and fundamental research.

The second sub-advisor utilizes a bottom-up investment strategy that is value-oriented and research-driven. The sub-advisor buys stocks that exhibit good value characteristics, strong business fundamentals and positive business momentum. The focus on business momentum helps the sub-advisor avoid the value trap, while bottom-up fundamental security analysis helps to verify their quantitative analysis. Lastly, they focus on the preservation of capital as they believe it is the key to long-term performance.

The third sub-advisor uses a Graham and Dodd based value oriented approach to managing emerging market equity investments. The strategy focuses on fundamental research at the company level and attempts to identify securities trading at significant discounts to their long term intrinsic value. This discount, or “margin of safety” is typically a by-product of short term price volatility and market inefficiency and the sub-advisor seeks to outperform the benchmark over the long-term by building concentrated portfolios of undervalued companies which they believe offer attractive long-term appreciation potential.

The sub-advisors may consider potential changes in currency exchange rates when choosing stocks. A sub-advisor may trade forward foreign currency contracts, including NDFs, or currency futures in an attempt to reduce the Fund’s risk exposure to adverse fluctuations in currency exchange rates.

The Fund may invest cash balances in money market funds and may purchase and sell futures contracts to gain market exposure on cash balances or reduce market exposure in anticipation of liquidity needs.

Risk [Heading]

rr_RiskHeading

Principal Risks

Risk Narrative [Text Block]

rr_RiskNarrativeTextBlock

There is no assurance that the Fund will achieve its investment objective and you could lose part or all of your investment in the Fund. The Fund is not designed for investors who need an assured level of income and is intended to be a long-term investment. The Fund is not a complete investment program and may not be appropriate for all investors. Investors should carefully consider their own investment goals and risk tolerance before investing in the Fund. The principal risks of investing in the Fund are:

Currency Risk

Foreign currencies may decline in value relative to the U.S. dollar and affect the Fund’s investments in foreign (non-U.S.) currencies or in securities that trade in, and receive revenues in, or in derivatives that provide exposure to, foreign (non-U.S.) currencies.

Emerging Markets Risk

When investing in emerging markets, the risks mentioned below of investing in foreign securities are heightened. Emerging markets have unique risks that are greater than or in addition to investing in developed markets because emerging markets are generally smaller, less developed, less liquid and more volatile than the securities markets of the U.S. and other developed markets. There are also risks of: greater political uncertainties; an economy’s dependence on revenues from particular commodities or on international aid or development assistance; currency transfer restrictions; a limited number of potential buyers for such securities; and delays and disruptions in securities settlement procedures. In addition, there may be more volatile rates of return.

Equity Investments Risk

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, rights, warrants and depository receipts. Such investments may expose the Fund to additional risks.

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 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. Depository receipts are subject to certain of the risks associated with investing directly in foreign securities.

Foreign Investing Risk

Non U.S. investments carry potential risks not associated with U.S. investments. Such risks include, but are not limited to: (1) currency exchange rate fluctuations, (2) political and financial instability, (3) less liquidity and greater volatility, (4) lack of uniform accounting, auditing and financial reporting standards, (5) increased price volatility; (6) less government regulation and supervision of foreign stock exchanges, brokers and listed companies; and (7) delays in transaction settlement in some foreign markets.

Futures Contracts and Foreign Currency Forward Contracts Risk

Futures contracts and foreign currency forward contracts, including NDFs, are derivative instruments pursuant to a contract with a counterparty to pay a fixed price for an agreed amount of securities or other underlying assets at an agreed date or to buy or sell a specific currency at a future date at a price set at the time of the contract. The use of such derivative instruments may expose the Fund to additional risks that it would not be subject to if they invested directly in the securities underlying those derivatives. Futures contracts may experience potentially dramatic price changes (losses) and imperfect correlations between the price of the contract and the underlying security, index or currency which will increase the volatility of the Fund and may involve a small investment of cash relative to the magnitude of the risk assumed. There can be no assurance that any strategy used will succeed. Not all forward contracts, including NDFs, require a counterparty to post collateral, which may expose the Fund to greater losses in the event of a default by a counterparty.

Hedging Risk

Gains or losses from positions in hedging instruments may be much greater than the instrument’s original cost. The counterparty may be unable to honor its financial obligation to the Fund. In addition, the Manager or a sub-advisor may be unable to close the transaction at the time it would like or at the price it believes the security is currently worth.

Investment Risk

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. Therefore, you may lose money by investing in the Fund.

Issuer Risk

The value of a security may decline for a number of reasons which directly relate to the issuer, such as management performance, financial leverage and reduced demand for the issuer’s goods or services, as well as the historical and prospective earnings of the issuer and the value of its assets.

Large Capitalization Companies Risk

The securities of large market capitalization companies may underperform other segments of the market because such companies may be less responsive to competitive challenges and opportunities and may be unable to attain high growth rates during periods of economic expansion.

Market Events Risk

Turbulence in financial markets and reduced liquidity in equity, credit and fixed-income markets may negatively affect many issuers worldwide which could adversely affect the Fund.

Market Risk

Market risks, including political, regulatory, market and economic developments and developments that impact specific economic sectors, industries or segments of the market, can affect the value of the Fund’s shares.  The Fund’s equity investments are subject to stock market risk, which involves the possibility that the value of the Fund’s investments in stocks of a particular country will decline due to drops in the stock market.  From time to time, certain investments 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 holdings to meet redemption requests or other cash needs, the Fund may have to sell them at a loss.

Market Timing Risk

Because the Fund invests in foreign securities, it is particularly subject to the risk of market timing activities. The Fund generally prices foreign securities using their closing prices from the foreign markets in which they trade, typically prior to the Fund’s determination of its net asset value. These prices may be affected by events that occur after the close of a foreign market but before the Fund prices its shares. In such instances, the Fund may fair value foreign securities. However, some investors may engage in frequent short-term trading in the Fund to take advantage of any price differentials that may be reflected in the net asset value of the Fund’s shares. There is no assurance that fair valuation of securities can reduce or eliminate market timing. While the Manager monitors trading in Fund shares, there is no guarantee that it can detect all market timing activities.

Securities Selection Risk

Securities selected by the Manager or 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.

Small and Medium Capitalization Companies Risk

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.

Risk Lose Money [Text]

rr_RiskLoseMoney

There is no assurance that the Fund will achieve its investment objective and you could lose part or all of your investment in the Fund.

Risk Not Insured Depository Institution [Text]

rr_RiskNotInsuredDepositoryInstitution

An investment in the Fund is not a deposit of a bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.

Bar Chart and Performance Table [Heading]

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Fund Performance

Performance Narrative [Text Block]

rr_PerformanceNarrativeTextBlock

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® Emerging Markets Funds Index, a composite of mutual funds comparable to the Fund. You may obtain updated performance information on the Fund’s website at www.americanbeaconfunds.com. Past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future.

Performance Information Illustrates Variability of Returns [Text]

rr_PerformanceInformationIllustratesVariabilityOfReturns

The bar chart and table below provide an indication of risk by showing how the Fund's performance has varied from year to year.

Performance Availability Website Address [Text]

rr_PerformanceAvailabilityWebSiteAddress

www.americanbeaconfunds.com

Performance Past Does Not Indicate Future [Text]

rr_PerformancePastDoesNotIndicateFuture

Past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future.

Bar Chart [Heading]

rr_BarChartHeading

Total Return for the Calendar Year Ended 12/31 of each Year

Bar Chart Closing [Text Block]

rr_BarChartClosingTextBlock

Highest Quarterly Return:	35.55%
(1/1/03 through 12/31/12)	(2nd Quarter 2009)
Lowest Quarterly Return:	-26.31%
(1/1/03 through 12/31/12)	(4th Quarter 2008)

Highest Quarterly Return, Label

rr_HighestQuarterlyReturnLabel

Highest Quarterly Return:

Highest Quarterly Return, Date

rr_BarChartHighestQuarterlyReturnDate

Jun. 30, 2009

Highest Quarterly Return

rr_BarChartHighestQuarterlyReturn

35.55%

Lowest Quarterly Return, Label

rr_LowestQuarterlyReturnLabel

Lowest Quarterly Return:

Lowest Quarterly Return, Date

rr_BarChartLowestQuarterlyReturnDate

Dec. 31, 2008

Lowest Quarterly Return

rr_BarChartLowestQuarterlyReturn

(26.31%)

Performance Table Heading

rr_PerformanceTableHeading

Average Annual Total Returns For the periods ended December 31, 2012

MSCI Emerging Markets Index

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

18.22%

5 Years

rr_AverageAnnualReturnYear05

(0.92%)

10 Years

rr_AverageAnnualReturnYear10

16.52%

Lipper Emerging Markets Funds Index

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

20.08%

5 Years

rr_AverageAnnualReturnYear05

1.48%

10 Years

rr_AverageAnnualReturnYear10

15.89%

AMR Class

Risk/Return:

rr_RiskReturnAbstract

Redemption Fee (as a percentage of Amount Redeemed)

rr_RedemptionFeeOverRedemption

(2.00%)

Management fees

rr_ManagementFeesOverAssets

0.80%

Distribution and/or service (12b-1) fees

rr_DistributionAndService12b1FeesOverAssets

none

Other expenses

rr_OtherExpensesOverAssets

0.44%

Acquired Fund Fees and Expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.01%

Total annual fund operating expenses

rr_ExpensesOverAssets

1.25%

^[1]

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

127

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

396

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

686

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

1,511

Annual Return 2003

rr_AnnualReturn2003

58.27%

Annual Return 2004

rr_AnnualReturn2004

24.88%

Annual Return 2005

rr_AnnualReturn2005

29.06%

Annual Return 2006

rr_AnnualReturn2006

33.28%

Annual Return 2007

rr_AnnualReturn2007

34.49%

Annual Return 2008

rr_AnnualReturn2008

(51.30%)

Annual Return 2009

rr_AnnualReturn2009

71.71%

Annual Return 2010

rr_AnnualReturn2010

18.36%

Annual Return 2011

rr_AnnualReturn2011

(21.72%)

Annual Return 2012

rr_AnnualReturn2012

17.74%

1 Year

rr_AverageAnnualReturnYear01

17.74%

5 Years

rr_AverageAnnualReturnYear05

(1.82%)

10 Years

rr_AverageAnnualReturnYear10

15.34%

[1] The Total Annual Fund Operating Expenses do not correlate to the ratio of expenses to average net assets provided in the Fund's Financial Highlights table, which reflects the operating expenses of the Fund and does not include Acquired Fund Fees and Expenses.