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Share Based Compensation - Additional Information (Details) - USD ($) shares in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023	May 31, 2023
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation costs	$ 112	$ 130	$ 102
Common stock withheld or sold related to tax obligations (in shares)	2.0	1.6	1.5
Payment of certain tax withholding obligations associated with employee equity awards	$ 28	$ 27	$ 23
Restricted stock unit awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period	3 years
Restricted Stock Units (RSUs), Stock Settled
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation cost	$ 51
Recognition period	1 year
Total fair value of stock-settled during the year	$ 57	69	78
CRSU
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation cost	$ 98
Recognition period	1 year
Liability related to cash settled awards	$ 53	39
Cash paid for awards vested	37	18
2023 Incentive Award Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares authorized for grant (in shares)				17.2
American Airlines, Inc.
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation costs	$ 106	$ 124	$ 97
Common stock withheld or sold related to tax obligations (in shares)	2.0	1.6	1.5
Payment of certain tax withholding obligations associated with employee equity awards	$ 28	$ 27	$ 23
American Airlines, Inc. \| Restricted stock unit awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period	3 years
American Airlines, Inc. \| Restricted Stock Units (RSUs), Stock Settled
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation cost	$ 51
Recognition period	1 year
Total fair value of stock-settled during the year	$ 57	69	$ 78
American Airlines, Inc. \| CRSU
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation cost	$ 91
Recognition period	1 year
Liability related to cash settled awards	$ 53	39
Cash paid for awards vested	$ 37	$ 18
American Airlines, Inc. \| 2023 Incentive Award Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares authorized for grant (in shares)				17.2