Revenue Recognition - Passenger Revenue by Geographic Region (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Airline Destination Disclosure [Line Items]
Total passenger revenue	$ 13,482	$ 13,462	$ 39,726	$ 35,783
American Airlines, Inc.
Airline Destination Disclosure [Line Items]
Total passenger revenue	13,481	13,461	39,723	35,778
Passenger
Airline Destination Disclosure [Line Items]
Total passenger revenue	12,421	12,396	36,502	32,438
Passenger | American Airlines, Inc.
Airline Destination Disclosure [Line Items]
Total passenger revenue	12,421	12,396	36,502	32,438
Passenger | Domestic
Airline Destination Disclosure [Line Items]
Total passenger revenue	8,616	8,786	25,848	23,966
Passenger | Domestic | American Airlines, Inc.
Airline Destination Disclosure [Line Items]
Total passenger revenue	8,616	8,786	25,848	23,966
Passenger | Latin America
Airline Destination Disclosure [Line Items]
Total passenger revenue	1,490	1,596	5,045	4,357
Passenger | Latin America | American Airlines, Inc.
Airline Destination Disclosure [Line Items]
Total passenger revenue	1,490	1,596	5,045	4,357
Passenger | Atlantic
Airline Destination Disclosure [Line Items]
Total passenger revenue	2,056	1,901	4,875	3,848
Passenger | Atlantic | American Airlines, Inc.
Airline Destination Disclosure [Line Items]
Total passenger revenue	2,056	1,901	4,875	3,848
Passenger | Pacific
Airline Destination Disclosure [Line Items]
Total passenger revenue	259	113	734	267
Passenger | Pacific | American Airlines, Inc.
Airline Destination Disclosure [Line Items]
Total passenger revenue	$ 259	$ 113	$ 734	$ 267