Employee Benefit Plans - Schedule of Allocation of Plan Assets (Details)	Dec. 31, 2025
Equity
Defined Benefit Plan Disclosure [Line Items]
Strategic target asset allocation	45.00%
Equity | Minimum
Defined Benefit Plan Disclosure [Line Items]
Strategic target asset allocation	10.00%
Equity | Maximum
Defined Benefit Plan Disclosure [Line Items]
Strategic target asset allocation	80.00%
U.S.
Defined Benefit Plan Disclosure [Line Items]
Strategic target asset allocation	18.00%
U.S. | Minimum
Defined Benefit Plan Disclosure [Line Items]
Strategic target asset allocation	5.00%
U.S. | Maximum
Defined Benefit Plan Disclosure [Line Items]
Strategic target asset allocation	40.00%
International developed markets
Defined Benefit Plan Disclosure [Line Items]
Strategic target asset allocation	9.00%
International developed markets | Minimum
Defined Benefit Plan Disclosure [Line Items]
Strategic target asset allocation	0.00%
International developed markets | Maximum
Defined Benefit Plan Disclosure [Line Items]
Strategic target asset allocation	20.00%
Emerging markets
Defined Benefit Plan Disclosure [Line Items]
Strategic target asset allocation	3.00%
Emerging markets | Minimum
Defined Benefit Plan Disclosure [Line Items]
Strategic target asset allocation	0.00%
Emerging markets | Maximum
Defined Benefit Plan Disclosure [Line Items]
Strategic target asset allocation	10.00%
Private equity
Defined Benefit Plan Disclosure [Line Items]
Strategic target asset allocation	15.00%
Private equity | Minimum
Defined Benefit Plan Disclosure [Line Items]
Strategic target asset allocation	5.00%
Private equity | Maximum
Defined Benefit Plan Disclosure [Line Items]
Strategic target asset allocation	35.00%
Fixed income
Defined Benefit Plan Disclosure [Line Items]
Strategic target asset allocation	55.00%
Fixed income | Minimum
Defined Benefit Plan Disclosure [Line Items]
Strategic target asset allocation	15.00%
Fixed income | Maximum
Defined Benefit Plan Disclosure [Line Items]
Strategic target asset allocation	90.00%
Public U.S. fixed income
Defined Benefit Plan Disclosure [Line Items]
Strategic target asset allocation	45.00%
Public U.S. fixed income | Minimum
Defined Benefit Plan Disclosure [Line Items]
Strategic target asset allocation	15.00%
Public U.S. fixed income | Maximum
Defined Benefit Plan Disclosure [Line Items]
Strategic target asset allocation	70.00%
Private income
Defined Benefit Plan Disclosure [Line Items]
Strategic target asset allocation	10.00%
Private income | Minimum
Defined Benefit Plan Disclosure [Line Items]
Strategic target asset allocation	0.00%
Private income | Maximum
Defined Benefit Plan Disclosure [Line Items]
Strategic target asset allocation	20.00%
Other
Defined Benefit Plan Disclosure [Line Items]
Strategic target asset allocation	0.00%
Other | Minimum
Defined Benefit Plan Disclosure [Line Items]
Strategic target asset allocation	0.00%
Other | Maximum
Defined Benefit Plan Disclosure [Line Items]
Strategic target asset allocation	5.00%
Cash equivalents
Defined Benefit Plan Disclosure [Line Items]
Strategic target asset allocation	0.00%
Cash equivalents | Minimum
Defined Benefit Plan Disclosure [Line Items]
Strategic target asset allocation	0.00%
Cash equivalents | Maximum
Defined Benefit Plan Disclosure [Line Items]
Strategic target asset allocation	20.00%
American Airlines, Inc. | Equity
Defined Benefit Plan Disclosure [Line Items]
Strategic target asset allocation	45.00%
American Airlines, Inc. | Equity | Minimum
Defined Benefit Plan Disclosure [Line Items]
Strategic target asset allocation	10.00%
American Airlines, Inc. | Equity | Maximum
Defined Benefit Plan Disclosure [Line Items]
Strategic target asset allocation	80.00%
American Airlines, Inc. | U.S.
Defined Benefit Plan Disclosure [Line Items]
Strategic target asset allocation	18.00%
American Airlines, Inc. | U.S. | Minimum
Defined Benefit Plan Disclosure [Line Items]
Strategic target asset allocation	5.00%
American Airlines, Inc. | U.S. | Maximum
Defined Benefit Plan Disclosure [Line Items]
Strategic target asset allocation	40.00%
American Airlines, Inc. | International developed markets
Defined Benefit Plan Disclosure [Line Items]
Strategic target asset allocation	9.00%
American Airlines, Inc. | International developed markets | Minimum
Defined Benefit Plan Disclosure [Line Items]
Strategic target asset allocation	0.00%
American Airlines, Inc. | International developed markets | Maximum
Defined Benefit Plan Disclosure [Line Items]
Strategic target asset allocation	20.00%
American Airlines, Inc. | Emerging markets
Defined Benefit Plan Disclosure [Line Items]
Strategic target asset allocation	3.00%
American Airlines, Inc. | Emerging markets | Minimum
Defined Benefit Plan Disclosure [Line Items]
Strategic target asset allocation	0.00%
American Airlines, Inc. | Emerging markets | Maximum
Defined Benefit Plan Disclosure [Line Items]
Strategic target asset allocation	10.00%
American Airlines, Inc. | Private equity
Defined Benefit Plan Disclosure [Line Items]
Strategic target asset allocation	15.00%
American Airlines, Inc. | Private equity | Minimum
Defined Benefit Plan Disclosure [Line Items]
Strategic target asset allocation	5.00%
American Airlines, Inc. | Private equity | Maximum
Defined Benefit Plan Disclosure [Line Items]
Strategic target asset allocation	35.00%
American Airlines, Inc. | Fixed income
Defined Benefit Plan Disclosure [Line Items]
Strategic target asset allocation	55.00%
American Airlines, Inc. | Fixed income | Minimum
Defined Benefit Plan Disclosure [Line Items]
Strategic target asset allocation	15.00%
American Airlines, Inc. | Fixed income | Maximum
Defined Benefit Plan Disclosure [Line Items]
Strategic target asset allocation	90.00%
American Airlines, Inc. | Public U.S. fixed income
Defined Benefit Plan Disclosure [Line Items]
Strategic target asset allocation	45.00%
American Airlines, Inc. | Public U.S. fixed income | Minimum
Defined Benefit Plan Disclosure [Line Items]
Strategic target asset allocation	15.00%
American Airlines, Inc. | Public U.S. fixed income | Maximum
Defined Benefit Plan Disclosure [Line Items]
Strategic target asset allocation	70.00%
American Airlines, Inc. | Private income
Defined Benefit Plan Disclosure [Line Items]
Strategic target asset allocation	10.00%
American Airlines, Inc. | Private income | Minimum
Defined Benefit Plan Disclosure [Line Items]
Strategic target asset allocation	0.00%
American Airlines, Inc. | Private income | Maximum
Defined Benefit Plan Disclosure [Line Items]
Strategic target asset allocation	20.00%
American Airlines, Inc. | Other
Defined Benefit Plan Disclosure [Line Items]
Strategic target asset allocation	0.00%
American Airlines, Inc. | Other | Minimum
Defined Benefit Plan Disclosure [Line Items]
Strategic target asset allocation	0.00%
American Airlines, Inc. | Other | Maximum
Defined Benefit Plan Disclosure [Line Items]
Strategic target asset allocation	5.00%
American Airlines, Inc. | Cash equivalents
Defined Benefit Plan Disclosure [Line Items]
Strategic target asset allocation	0.00%
American Airlines, Inc. | Cash equivalents | Minimum
Defined Benefit Plan Disclosure [Line Items]
Strategic target asset allocation	0.00%
American Airlines, Inc. | Cash equivalents | Maximum
Defined Benefit Plan Disclosure [Line Items]
Strategic target asset allocation	20.00%