v3.26.3
Fees and Expenses
Jun. 30, 2026
USD ($)
American Beacon SSI Alternative Income Fund | American Beacon SSI Alternative Income Fund  
Prospectus [Line Items]  
Expense Heading [Optional Text] Fees and Expenses of the Fund
Expense Narrative [Text Block]
This table describes the fees and expenses that you may pay if you buy, hold, and sell shares of the Fund. You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in the tables and examples below. More information  is available from your financial professional and in “Choosing Your Share Class” on page 27 of the Prospectus.
Expenses Not Correlated to Ratio Due to Acquired Fund Fees [Text] 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.
Shareholder Fees Caption [Optional Text] Shareholder Fees (fees paid directly from your investment)
Shareholder Fees [Table]
Share Class
Y
R5
Investor
Maximum sales charge imposed on purchases (as a percentage of offering price)
None
None
None
Maximum deferred sales charge (as a percentage of the lower of original offering price or redemption proceeds)
None
None
None
Operating Expenses Caption [Optional Text] Annual Fund Operating Expenses (Expenses that you pay each year as a percentage of the value of your investment)
Annual Fund Operating Expenses [Table]
Annual Fund Operating Expenses (Expenses that you pay each year as a percentage of the value of your investment)
Share Class
Y
R5
Investor
Management Fees
1.29%
1.29%
1.29%
Distribution and/or Service (12b-1) Fees
0.00%
0.00%
0.00%
Other Expenses1
1.14%
1.06%
1.46%
Dividend Expense on Securities Sold Short
0.89%
0.89%
0.87%
Remainder of Other Expenses
0.25%
0.17%
0.59%
Acquired Fund Fees and Expenses
0.01%
0.01%
0.01%
Total Annual Fund Operating Expenses2
2.44%
2.36%
2.76%
Fee Waiver and/or expense reimbursement3
(0.55%)
(0.54%)
(0.64%)
Total Annual Fund Operating Expenses after fee waiver and/or expense reimbursement
1.89%
1.82%
2.12%
[1],[2],[3]
Expense Example [Heading] Example
Expense Example Narrative [Text Block]
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 hold or redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return each year and that the Fund’s operating expenses remain the same, except that the Example reflects the fee waiver/expense reimbursement arrangement for each share class through November 3, 2027. Although your actual costs may be higher or lower, based on these assumptions, whether you redeem or hold your shares, your costs would be:
Expense Example, With Redemption [Table]
Share Class
1 Year
3 Years
5 Years
10 Years
Y
$192
$708
$1,251
$2,735
R5
$185
$685
$1,211
$2,655
Investor
$215
$796
$1,403
$3,043
Portfolio Turnover [Heading] Portfolio Turnover
Portfolio Turnover [Text Block]
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 236% of the average value of its portfolio.
Portfolio Turnover, Rate 236.00%
AB ARK Transformational Innovation Fund | American Beacon ARK Transformational Innovation Fund  
Prospectus [Line Items]  
Expense Heading [Optional Text] Fees and Expenses of the Fund
Expense Narrative [Text Block]
This table describes the fees and expenses that you may pay if you buy, hold, and sell shares of the Fund. You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in the tables and examples below. You may qualify for sales discounts if you and your eligible family members invest, or agree to invest in the future, at least $50,000 in all classes of the American Beacon Funds on an aggregated basis. More information about these and other discounts is available from your financial professional and in “Choosing Your Share Class” on page  17 of the Prospectus and “Additional Purchase and Sale Information for A Class Shares” on page  40  of the Statement of Additional Information (“SAI”). With respect to purchases of shares through specific intermediaries, you may find additional information regarding sales charge discounts and waivers in Appendix A to the Fund’s Prospectus entitled “Intermediary Sales Charge Discounts, Waivers and Other Information.”
Expense Breakpoint Discounts [Text] You may qualify for sales discounts if you and your eligible family members invest, or agree to invest in the future, at least $50,000 in all classes of the American Beacon Funds on an aggregated basis.
Expense Breakpoint, Minimum Investment Required [Amount] $ 50,000
Shareholder Fees Caption [Optional Text] Shareholder Fees (fees paid directly from your investment)
Shareholder Fees [Table]
Share Class
A
C
Y
R6
R5
Investor
Maximum sales charge imposed on purchases (as a percentage of offering price)
5.75%
None
None
None
None
None
Maximum deferred sales charge (as a percentage of the lower of original offering price or redemption proceeds)
0.50%1
1.00%
None
None
None
None
[4]
Operating Expenses Caption [Optional Text] Annual Fund Operating Expenses (Expenses that you pay each year as a percentage of the value of your investment)
Annual Fund Operating Expenses [Table]
Annual Fund Operating Expenses (Expenses that you pay each year as a percentage of the value of your investment)
Share Class
A
C
Y
R6
R5
Investor
Management Fees
0.90%
0.90%
0.90%
0.90%
0.90%
0.90%
Distribution and/or Service (12b-1) Fees
0.25%
1.00%
0.00%
0.00%
0.00%
0.00%
Other Expenses2
0.33%
0.36%
0.30%
0.21%
0.22%
0.57%
Total Annual Fund Operating Expenses
1.48%
2.26%
1.20%
1.11%
1.12%
1.47%
Fee Waiver and/or expense reimbursement  3
(0.13%)
(0.15%)
(0.11%)
(0.11%)
(0.12%)
(0.14%)
Total Annual Fund Operating Expenses after fee waiver and/or expense reimbursement
1.35%
2.11%
1.09%
1.00%
1.00%
1.33%
[5],[6]
Expenses Deferred Charges [Text Block] Currently, the Fund does not assess a front-end sales load on purchases of A Class shares of $1,000,000 or more. However, the Fund assesses a contingent deferred sales charge (‘‘CDSC’’) of 0.50% on certain purchases of $1,000,000 or more of A Class shares that are redeemed in whole or part within 18 months of purchase.
Expense Example [Heading] Example
Expense Example Narrative [Text Block]
This Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return each year and that the Fund’s operating expenses remain the same, except that the Example reflects the fee waiver/expense reimbursement arrangement for each share class through November 3, 2027. C Class shares automatically convert to A Class shares 8 years after purchase if the conversion is available through your financial intermediary. This Example reflects your costs as though C Class shares were held for the full 10-year period. Although your actual costs may be higher or lower, based on these assumptions, your costs would be:
Expense Example, With Redemption [Table]
Share Class
1 Year
3 Years
5 Years
10 Years
A
$705
$1,004
$1,325
$2,231
C
$314
$692
$1,196
$2,584
Y
$111
$370
$649
$1,445
R6
$102
$342
$601
$1,342
R5
$102
$344
$605
$1,352
Investor
$135
$451
$789
$1,745
Expense Example, No Redemption, By Year, Caption [Text] Assuming no redemption of shares:
Expense Example, No Redemption [Table]
Share Class
1 Year
3 Years
5 Years
10 Years
C
$214
$692
$1,196
$2,584
Portfolio Turnover [Heading] Portfolio Turnover
Portfolio Turnover [Text Block]
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 47% of the average value of its portfolio.
Portfolio Turnover, Rate 47.00%
AB TwentyFour Funds | American Beacon TwentyFour Strategic Income Fund  
Prospectus [Line Items]  
Expense Heading [Optional Text] Fees and Expenses of the Fund
Expense Narrative [Text Block]
This table describes the fees and expenses that you may pay if you buy, hold, and sell shares of the Fund. You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in the tables and examples below. You may qualify for sales discounts if you and your eligible family members invest, or agree to invest in the future, at least $50,000 in all classes of the American Beacon Funds on an aggregated basis. More information about these and other discounts is available from your financial professional and in “Choosing Your Share Class” on page  54 of the Prospectus and “Additional Purchase and Sale Information for A Class Shares” on page  58  of the Statement of Additional Information (“SAI”). With respect to purchases of shares through specific intermediaries, you may find additional information regarding sales charge discounts and waivers in Appendix A to the Fund’s Prospectus entitled “Intermediary Sales Charge Discounts, Waivers and Other Information.”
Expense Breakpoint Discounts [Text] You may qualify for sales discounts if you and your eligible family members invest, or agree to invest in the future, at least $50,000 in all classes of the American Beacon Funds on an aggregated basis.
Expense Breakpoint, Minimum Investment Required [Amount] $ 50,000
Shareholder Fees Caption [Optional Text] Shareholder Fees (fees paid directly from your investment)
Shareholder Fees [Table]
Share Class
A
C
Y
R5
Investor
Maximum sales charge imposed on purchases (as a percentage of offering price)
3.75%
None
None
None
None
Maximum deferred sales charge (as a percentage of the lower of original offering price or redemption proceeds)
1.00%1
1.00%
None
None
None
[7]
Operating Expenses Caption [Optional Text] Annual Fund Operating Expenses (Expenses that you pay each year as a percentage of the value of your investment)
Annual Fund Operating Expenses [Table]
Annual Fund Operating Expenses (Expenses that you pay each year as a percentage of the value of your investment)
Share Class
A
C
Y
R5
Investor
Management Fees
0.67%
0.67%
0.67%
0.67%
0.67%
Distribution and/or Service (12b-1) Fees
0.25%
1.00%
0.00%
0.00%
0.00%
Other Expenses
0.20%
0.21%
0.23%
0.17%
0.58%
Total Annual Fund Operating Expenses
1.12%
1.88%
0.90%
0.84%
1.25%
Fee Waiver and/or expense reimbursement2
(0.12%)
(0.09%)
(0.10%)
(0.12%)
(0.16%)
Total Annual Fund Operating Expenses after fee waiver and/or expense reimbursement
1.00%
1.79%
0.80%
0.72%
1.09%
[8]
Expenses Deferred Charges [Text Block] Currently, the Fund does not assess a front-end sales load on purchases of A Class shares of $500,000 or more. However, the Fund assesses a  contingent deferred sales charge (“CDSC”) of 1.00% on certain purchases of $500,000 or more of A Class shares that are redeemed in whole or part within 18 months of purchase.
Expense Example [Heading] Example
Expense Example Narrative [Text Block]
This Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return each year and that the Fund’s operating expenses remain the same, except that the Example reflects the fee waiver/expense reimbursement arrangement for each share class through November 3, 2027. C Class shares automatically convert to A Class shares 8 years after purchase if the conversion is available through your financial intermediary. This Example reflects your costs as though C Class shares were held for the full 10-year period. Although your actual costs may be higher or lower, based on these assumptions, your costs would be:
Expense Example, With Redemption [Table]
Share Class
1 Year
3 Years
5 Years
10 Years
A
$473
$706
$958
$1,677
C
$282
$582
$1,008
$2,194
Y
$82
$277
$489
$1,099
R5
$74
$256
$454
$1,026
Investor
$111
$381
$671
$1,497
Expense Example, No Redemption, By Year, Caption [Text] Assuming no redemption of shares:
Expense Example, No Redemption [Table]
Share Class
1 Year
3 Years
5 Years
10 Years
C
$182
$582
$1,008
$2,194
Portfolio Turnover [Heading] Portfolio Turnover
Portfolio Turnover [Text Block]
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 46% of the average value of its portfolio.
Portfolio Turnover, Rate 46.00%
AB TwentyFour Funds | American Beacon TwentyFour Short Term Bond Fund  
Prospectus [Line Items]  
Expense Heading [Optional Text] Fees and Expenses of the Fund
Expense Narrative [Text Block]
This table describes the fees and expenses that you may pay if you buy, hold, and sell shares of the Fund. You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in the tables and examples below. You may qualify for sales discounts if you and your eligible family members invest, or agree to invest in the future, at least $50,000 in all classes of the American Beacon Funds on an aggregated basis. More information about these and other discounts is available from your financial professional and in “Choosing Your Share Class” on page  54 of the Prospectus and “Additional Purchase and Sale Information for A Class Shares” on page  58  of the Statement of Additional Information (“SAI”). With respect to purchases of shares through specific intermediaries, you may find additional information regarding sales charge discounts and waivers in Appendix A to the Fund’s Prospectus entitled “Intermediary Sales Charge Discounts, Waivers and Other Information.”
Expense Breakpoint Discounts [Text] You may qualify for sales discounts if you and your eligible family members invest, or agree to invest in the future, at least $50,000 in all classes of the American Beacon Funds on an aggregated basis.
Expense Breakpoint, Minimum Investment Required [Amount] $ 50,000
Shareholder Fees Caption [Optional Text] Shareholder Fees (fees paid directly from your investment)
Shareholder Fees [Table]
Share Class
A
C
Y
R6
Maximum sales charge imposed on purchases (as a percentage of offering price)
2.50%
None
None
None
Maximum deferred sales charge (as a percentage of the lower of original offering price or redemption proceeds)
0.50%1
1.00%
None
None
[9]
Operating Expenses Caption [Optional Text] Annual Fund Operating Expenses (Expenses that you pay each year as a percentage of the value of your investment)
Annual Fund Operating Expenses [Table]
Annual Fund Operating Expenses (Expenses that you pay each year as a percentage of the value of your investment)
Share Class
A
C
Y
R6
Management Fees
0.55%
0.55%
0.55%
0.55%
Distribution and/or Service (12b-1) Fees
0.25%
1.00%
0.00%
0.00%
Other Expenses
2.58%
2.35%
2.43%
2.40%
Total Annual Fund Operating Expenses
3.38%
3.90%
2.98%
2.95%
Fee Waiver and/or expense reimbursement2
(2.51%)
(2.42%)
(2.41%)
(2.48%)
Total Annual Fund Operating Expenses after fee waiver and/or expense reimbursement
0.87%
1.48%
0.57%
0.47%
[10]
Expenses Deferred Charges [Text Block] Currently, the Fund does not assess a front-end sales load on purchases of A Class shares of $250,000 or more. However, the Fund assesses a contingent deferred sales charge (‘’CDSC’’) of 0.50% on certain purchases of $250,000 or more of A Class shares that are redeemed in whole or part within 18 months of purchase.
Expense Example [Heading] Example
Expense Example Narrative [Text Block]
This Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return each year and that the Fund’s operating expenses remain the same, except that the Example reflects the fee waiver/expense reimbursement arrangement for each share class through November 3, 2027. C Class shares automatically convert to A Class shares 8 years after purchase if the conversion is available through your financial intermediary. This Example reflects your costs as though C Class shares were held for the full 10-year period. Although your actual costs may be higher or lower, based on these assumptions, your costs would be:
Expense Example, With Redemption [Table]
Share Class
1 Year
3 Years
5 Years
10 Years
A
$337
$1,034
$1,754
$3,660
C
$251
$967
$1,801
$3,969
Y
$58
$693
$1,354
$3,127
R6
$48
$677
$1,333
$3,093
Expense Example, No Redemption, By Year, Caption [Text] Assuming no redemption of shares:
Expense Example, No Redemption [Table]
Share Class
1 Year
3 Years
5 Years
10 Years
C
$151
$967
$1,801
$3,969
Portfolio Turnover [Heading] Portfolio Turnover
Portfolio Turnover [Text Block]
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 68% of the average value of its portfolio.
Portfolio Turnover, Rate 68.00%
[1]
1 During the fiscal year ended June 30, 2026, the Fund paid amounts to American Beacon Advisors, Inc. (the “Manager”) that were previously waived and/or reimbursed by the Manager under a contractual fee waiver/expense reimbursement agreement for the Fund’s  Y Class, R5 Class, and Investor Class shares in the amount of 0.03% for the Y Class,  0.03% for the R5 Class, and 0.01% for the Investor Class shares.
[2]
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]
3 The Manager has contractually agreed to waive fees and/or reimburse expenses of the Fund’s Y Class, R5 Class and Investor Class shares, as applicable, through November 3, 2027 to the extent that Total Annual Fund Operating Expenses exceed 0.99% for the Y Class, 0.92% for the R5 Class, and 1.24% for the Investor Class (excluding taxes, interest, brokerage commissions, acquired fund fees and expenses, securities lending fees, expenses associated with securities sold short, litigation, and other extraordinary expenses).  As part of this arrangement, SSI Investment Management LLC (the “Sub-Advisor”) has contractually agreed to waive a portion of its sub-advisory fees equal to 0.44% of the Fund’s average daily net assets up to $300 million and 0.34% of the Fund’s average daily net assets over $300 million under the Sub-Advisor’s management through November 3, 2027.  The contractual expense reimbursement and fee waiver by the Manager and the contractual fee waiver by the Sub-Advisor can be changed or terminated only in the discretion and with the approval of a majority of the Fund’s Board of Trustees. The Manager (but not the Sub-Advisor) can be reimbursed by the Fund for any contractual fee waivers or expense reimbursements if reimbursement to the Manager (a) occurs within three years from the date of the Manager’s waiver/reimbursement and (b) does not cause the Total Annual Fund Operating Expenses of a class to exceed the lesser of the contractual percentage limit in effect at the time of the waiver/reimbursement or the time of the recoupment.
[4]
1 Currently, the Fund does not assess a front-end sales load on purchases of A Class shares of $1,000,000 or more. However, the Fund assesses a contingent deferred sales charge (‘‘CDSC’’) of 0.50% on certain purchases of $1,000,000 or more of A Class shares that are redeemed in whole or part within 18 months of purchase.
[5]
2 Other Expenses for each share class include 0.01% securities lending expenses. In addition, during the fiscal year ended June 30, 2026, the Fund paid amounts to American Beacon Advisors, Inc. (the “Manager”) that were previously waived and/or reimbursed by the Manager under a contractual fee waiver/expense reimbursement agreement for the Fund’s A Class shares in the amount of 0.01%.  
[6]
3 The Manager has contractually agreed to waive fees and/or reimburse expenses of the Fund’s A Class, C Class, Y Class, R6 Class, R5 Class, and Investor Class shares, as applicable, through November 3, 2027 to the extent that Total Annual Fund Operating Expenses exceed 1.34% for the A Class, 2.10% for the C Class, 1.08% for the Y Class, 0.99% for the R6 Class, 0.99% for the R5 Class, and 1.32% for the Investor Class (excluding taxes, interest, brokerage commissions, acquired fund fees and expenses, securities lending fees, expenses associated with securities sold short, litigation, and other extraordinary expenses). The contractual expense reimbursement can be changed or terminated only in the discretion and with the approval of a majority of the Fund’s Board of Trustees (the “Board”). The Manager will itself waive fees and/or reimburse expenses of the Fund to maintain the contractual expense ratio caps for each applicable class of shares or make arrangements with other service providers to do so. The Manager can be reimbursed by the Fund for any contractual fee waivers or expense reimbursements if reimbursement to the Manager (a) occurs within three years from the date of the Manager’s waiver/reimbursement and (b) does not cause the Total Annual Fund Operating Expenses of a class to exceed the lesser of the contractual percentage limit in effect at the time of the waiver/reimbursement or the time of the recoupment.
[7]
1 Currently, the Fund does not assess a front-end sales load on purchases of A Class shares of $500,000 or more. However, the Fund assesses a  contingent deferred sales charge (“CDSC”) of 1.00% on certain purchases of $500,000 or more of A Class shares that are redeemed in whole or part within 18 months of purchase.
[8]
2 American Beacon Advisors, Inc. (the “Manager”) has contractually agreed to waive fees and/or reimburse expenses of the Fund’s A Class, C Class, Y Class, R5 Class, and Investor Class shares, as applicable, through November 3, 2027, to the extent that Total Annual Fund Operating Expenses exceed 1.00% for the A Class, 1.79% for the C Class, 0.80% for the Y Class, 0.72% for the R5 Class, and 1.09% for the Investor Class (excluding taxes, interest, brokerage commissions, acquired fund fees and expenses, securities lending fees, expenses associated with securities sold short, litigation, and other extraordinary expenses). The contractual expense reimbursement can be changed or terminated only in the discretion and with the approval of a majority of the Fund’s Board of Trustees (the “Board”). The Manager will itself waive fees and/or reimburse expenses of the Fund to maintain the contractual expense ratio caps for each applicable class of shares or make arrangements with other service providers to do so. The Manager can be reimbursed by the Fund for any contractual fee waivers or expense reimbursements if reimbursement to the Manager (a) occurs within three years from the date of the Manager’s waiver/reimbursement and (b) does not cause the Total Annual Fund Operating Expenses of a class to exceed the lesser of the contractual percentage limit in effect at the time of the waiver/reimbursement or the time of the recoupment.
[9]
1 Currently, the Fund does not assess a front-end sales load on purchases of A Class shares of $250,000 or more. However, the Fund assesses a contingent deferred sales charge (‘’CDSC’’) of 0.50% on certain purchases of $250,000 or more of A Class shares that are redeemed in whole or part within 18 months of purchase.
[10]
2 American Beacon Advisors, Inc. (the “Manager”) has contractually agreed to waive fees and/or reimburse expenses of the Fund’s A Class, C Class, Y Class, and R6 Class shares, as applicable, through November 3, 2027 to the extent that Total Annual Fund Operating Expenses exceed 0.87% for the A Class, 1.48% for the C Class, 0.57% for the Y Class, and 0.47% for the R6 Class (excluding taxes, interest, brokerage commissions, acquired fund fees and expenses, securities lending fees, expenses associated with securities sold short, litigation, and other extraordinary expenses). The contractual expense reimbursement can be changed or terminated only in the discretion and with the approval of a majority of the Fund’s Board of Trustees. The Manager will itself waive fees and/or reimburse expenses of the Fund to maintain the contractual expense ratio caps for each applicable class of shares or make arrangements with other service providers to do so. The Manager can be reimbursed by the Fund for any contractual fee waivers or expense reimbursements if reimbursement to the Manager (a) occurs within three years from the date of the Manager’s waiver/reimbursement and (b) does not cause the Total Annual Fund Operating Expenses of a class to exceed the lesser of the contractual percentage limit in effect at the time of the waiver/reimbursement or the time of the recoupment.