v3.25.2
Shareholder Report
 6 Months Ended
Jul. 31, 2025
USD ($)
Holding
Shareholder Report [Line Items]  
Document Type N-CSRS
Amendment Flag false
Registrant Name AMERICAN BEACON SELECT FUNDS
Entity Central Index Key 0001096012
Entity Investment Company Type N-1A
Document Period End Date Jul. 31, 2025
C000243995  
Shareholder Report [Line Items]  
Fund Name AHL Trend ETF
Trading Symbol AHLT
Security Exchange Name NYSE
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about American Beacon AHL Trend ETF for the period of February 1, 2025 to July 31, 2025.
Shareholder Report Annual or Semi-Annual Semi-Annual Shareholder Report
Additional Information [Text Block] You can find additional information about the Fund at www.americanbeaconfunds.com/fund-resources/. You can also request this information by contacting us at 833-471-3562.
Additional Information Phone Number 833-471-3562
Additional Information Website <span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 13.3333px; font-weight: 400; grid-area: auto; line-height: 20px; margin: 0px; overflow: visible; text-align: left; text-align-last: auto; white-space-collapse: preserve-breaks;">www.americanbeaconfunds.com/fund-resources/</span>
Expenses [Text Block]

What were the Fund costs for the last six months?

(based on a hypothetical $10,000 investment)

Fund Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
AHL Trend ETF
$45
0.96%Footnote Reference*
Footnote Description
Footnote*
 Annualized.
Expenses Paid, Amount $ 45
Expense Ratio, Percent 0.96% [1]
AssetsNet $ 47,491,089
Holdings Count | Holding 8
Advisory Fees Paid, Amount $ 219,374
InvestmentCompanyPortfolioTurnover 0.00%
Additional Fund Statistics [Text Block]

Key Fund Statistics

Total Net Assets
$47,491,089
# of Portfolio Holdings
8
Portfolio Turnover RateFootnote Reference*
0%
Total Management Fees Paid
$219,374
Footnote Description
Footnote*
 Portfolio turnover is based on the lesser of long-term purchases or sales divided by the average long-term fair value during the period. The Fund did not invest in any long-term securities during the reporting period.
Holdings [Text Block]

Top Active Exposures by Asset Class % of VaR*

Commodities
Header
% of VaR
  Crude Oil
Long
11.1
  Silver
Long
10.1
  Gold
Long
7.8
  Copper
Long
5.1
Currencies
Header
% of VaR
  Euro/US Dollar
Long/Short
6.5
  UK Sterling/US Dollar
Long/Short
4.0
  Japanese Yen/US Dollar
Short/Long
3.8
  Australian Dollar/US Dollar
Long/Short
3.7
  Swiss Franc/US Dollar
Long/Short
0.8
Equities
Header
% of VaR
  S&P 500 Index
Long
10.7
  NASDAQ 100 Index
Long
6.5
  FTSE 100
Long
5.9
  Euro-STOXX
Long
5.0
  DAX Index
Long
4.8
Fixed Income
Header
% of VaR
  US Treasuries
Short
3.0
  Euro-BUND
Short
1.4
  Gilts
Short
0.9
  Euro-BOBL
Long
0.1

Asset Class Exposure % of VaR*

Group By Asset Type Chart
Value
Value
Stocks
40.8
Commodities
34.1
Currencies
19.7
Bonds and Rates
5.4

* Value at Risk (“VaR”) is a measure of the potential loss in value of a portfolio over a defined period for a given confidence interval. A one-day VaR at the 95% confidence level represents that there is a 5% probability that the mark-to-market loss on the portfolio over a one day horizon will exceed this value (assuming normal markets and no trading in the portfolio).
Largest Holdings [Text Block]

Top Ten Exposures % of VaR*

Crude Oil
Long
11.1
S&P 500 Index
Long
10.7
Silver
Long
10.1
Gold
Long
7.8
Euro/US Dollar
Long/Short
6.5
NASDAQ 100 Index
Long
6.5
FTSE 100
Long
5.9
Copper
Long
5.1
Euro-STOXX
Long
5.0
DAX Index
Long
4.8
Material Fund Change [Text Block]
C000247981  
Shareholder Report [Line Items]  
Fund Name GLG Natural Resources ETF
Trading Symbol MGNR
Security Exchange Name NYSE
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about American Beacon GLG Natural Resources ETF for the period of February 1, 2025 to July 31, 2025.
Shareholder Report Annual or Semi-Annual Semi-Annual Shareholder Report
Additional Information [Text Block] You can find additional information about the Fund at www.americanbeaconfunds.com/fund-resources/. You can also request this information by contacting us at 833-471-3562.
Additional Information Phone Number 833-471-3562
Additional Information Website <span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 400; grid-area: auto; line-height: 18px; margin: 0px; overflow: visible; text-align: left; text-align-last: auto; white-space-collapse: preserve-breaks;">www.americanbeaconfunds.com/fund-resources/</span>
Expenses [Text Block]

What were the Fund costs for the last six months?

(based on a hypothetical $10,000 investment)

Fund Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
GLG Natural Resources ETF
$38
0.75%Footnote Reference*
Footnote Description
Footnote*
 Annualized.
Expenses Paid, Amount $ 38
Expense Ratio, Percent 0.75% [2]
AssetsNet $ 172,154,019
Holdings Count | Holding 51
Advisory Fees Paid, Amount $ 533,522
InvestmentCompanyPortfolioTurnover 40.00%
Additional Fund Statistics [Text Block]

Key Fund Statistics

Total Net Assets
$172,154,019
# of Portfolio Holdings
51
Portfolio Turnover Rate
40%
Total Management Fees Paid
$533,522
Holdings [Text Block]

Asset Allocation - % Investments

Group By Asset Type Chart
Value
Value
Common Stocks
56.9
Foreign Common Stocks
43.1

Country Exposure - % Equities

Group By Sector Chart
Value
Value
Argentina
1.2
Ivory Coast
1.5
South Africa
1.9
Zambia
2.0
China
2.2
Norway
2.5
United Kingdom
3.0
Germany
6.8
Canada
22.0
United States
56.9

Sector Allocation - % Equities

Group By Country Chart
Value
Value
Information Technology
1.4
Utilities
3.6
Industrials
10.4
Consumer Staples
11.2
Energy
19.5
Materials
53.9
Largest Holdings [Text Block]

 Top Ten Holdings - % Net Assets

Coeur Mining, Inc.
4.1
Kinross Gold Corp.
3.8
Permian Resources Corp.
3.7
Siemens Energy AG
3.6
Hudbay Minerals, Inc.
3.4
Methanex Corp.
3.2
Smurfit WestRock PLC
3.1
BASF SE
3.0
GE Vernova, Inc.
2.9
Talen Energy Corp.
2.8
Material Fund Change [Text Block]
C000257150  
Shareholder Report [Line Items]  
Fund Name Ionic Inflation Protection ETF
Trading Symbol CPII
Security Exchange Name NYSE
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about American Beacon Ionic Inflation Protection ETF for the period of May 1, 2025 to July 31, 2025.
Shareholder Report Annual or Semi-Annual Semi-Annual Shareholder Report
Additional Information [Text Block] You can find additional information about the Fund at www.americanbeaconfunds.com/fund-resources/. You can also request this information by contacting us at 833-471-3562.
Additional Information Phone Number 833-471-3562
Additional Information Website <span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 13.3333px; font-weight: 400; grid-area: auto; line-height: 20px; margin: 0px; overflow: visible; text-align: left; text-align-last: auto; white-space-collapse: preserve-breaks;">www.americanbeaconfunds.com/fund-resources/</span>
Expenses [Text Block]

What were the Fund costs for the last six months?

(based on a hypothetical $10,000 investment)

Fund Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
Ionic Inflation Protection ETF
$18
0.70%Footnote Reference*
Footnote Description
Footnote*
 Annualized.
Expenses Paid, Amount $ 18
Expense Ratio, Percent 0.70% [3]
AssetsNet $ 10,576,023
Holdings Count | Holding 9
Advisory Fees Paid, Amount $ 17,904
InvestmentCompanyPortfolioTurnover 1.00%
Additional Fund Statistics [Text Block]

Key Fund Statistics

Total Net Assets
$10,576,023
# of Portfolio Holdings
9
Portfolio Turnover Rate
1%
Total Management Fees Paid
$17,904
Holdings [Text Block]

Asset Allocation - % Investments

U.S. Treasury Obligations
98.2
Investment Companies
1.0
Interest Rate Swaptions
0.5
Inflation Swap
0.3
Largest Holdings [Text Block]

 Top Ten Holdings - % Net Assets

U.S. Treasury Inflation-Indexed Notes, 0.125%, Due 10/15/2025
12.9
U.S. Treasury Inflation-Indexed Notes, 0.375%, Due 7/15/2027
12.8
U.S. Treasury Inflation-Indexed Notes, 0.125%, Due 4/15/2027
12.7
U.S. Treasury Inflation-Indexed Notes, 0.125%, Due 4/15/2026
12.3
U.S. Treasury Inflation-Indexed Notes, 0.125%, Due 7/15/2026
12.1
U.S. Treasury Inflation-Indexed Notes, 0.125%, Due 10/15/2026
12.1
U.S. Treasury Inflation-Indexed Notes, 0.625%, Due 1/15/2026
11.6
U.S. Treasury Inflation-Indexed Notes, 0.375%, Due 1/15/2027
11.2
2-Year Interest Rate Swap, 5.220%, Due 1/13/2027
0.3
Centrally Cleared Inflation Swap, 2.610%, Due 1/15/2030
0.3

Excludes cash equivalents. 
Material Fund Change [Text Block]
[1] Annualized.
[2] Annualized.
[3] Annualized.