Revenue Recognition - Changes in Loyalty Program Liability (Details) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2023	Dec. 31, 2022
Movement In Contract With Customer, Liability [Roll Forward]
Beginning balance	$ 15,890
Ending balance	17,906
Loyalty program liability
Movement In Contract With Customer, Liability [Roll Forward]
Beginning balance	9,145
Deferral of revenue	2,002
Recognition of revenue	(1,771)
Ending balance	$ 9,376
Inactive period before expiration of mileage credits	24 months
Deferred revenue, current	$ 3,492	$ 3,169
Revenue recognition term	12 months
American Airlines, Inc.
Movement In Contract With Customer, Liability [Roll Forward]
Beginning balance	$ 15,890
Ending balance	17,906
American Airlines, Inc. | Loyalty program liability
Movement In Contract With Customer, Liability [Roll Forward]
Beginning balance	9,145
Deferral of revenue	2,002
Recognition of revenue	(1,771)
Ending balance	9,376
Deferred revenue, current	$ 3,492	$ 3,169