Share Based Compensation - Additional Information (Details) - USD ($) shares in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021	May 31, 2023
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation costs	$ 102	$ 78	$ 98
Common stock withheld or sold related to tax obligations (in shares)	1.5	1.2	1.0
Payment of certain tax withholding obligations associated with employee equity awards	$ 23	$ 21	$ 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	$ 97	$ 75	$ 95
Common stock withheld or sold related to tax obligations (in shares)	1.5	1.2	1.0
Payment of certain tax withholding obligations associated with employee equity awards	$ 23	$ 21	$ 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