Revenue Recognition - Changes in Loyalty Program Liability (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2023	Dec. 31, 2022
Movement In Contract With Customer, Liability [Roll Forward]
Beginning balance	$ 15,890
Ending balance	18,420
Loyalty program liability
Movement In Contract With Customer, Liability [Roll Forward]
Beginning balance	9,145
Deferral of revenue	1,057
Recognition of revenue	(835)
Ending balance	$ 9,367
Inactive period before expiration of mileage credits	24 months
Deferred revenue, current	$ 3,486	$ 3,169
Revenue recognition term	12 months
American Airlines, Inc.
Movement In Contract With Customer, Liability [Roll Forward]
Beginning balance	$ 15,890
Ending balance	18,420
American Airlines, Inc. | Loyalty program liability
Movement In Contract With Customer, Liability [Roll Forward]
Beginning balance	9,145
Deferral of revenue	1,057
Recognition of revenue	(835)
Ending balance	9,367
Deferred revenue, current	$ 3,486	$ 3,169