Revenue Recognition - Passenger Revenue by Geographic Region (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Airline Destination Disclosure [Line Items]
Total passenger revenue	$ 13,647	$ 13,482	$ 40,551	$ 39,726
American Airlines, Inc.
Airline Destination Disclosure [Line Items]
Total passenger revenue	13,645	13,481	40,546	39,723
Passenger
Airline Destination Disclosure [Line Items]
Total passenger revenue	12,523	12,421	37,184	36,502
Passenger | American Airlines, Inc.
Airline Destination Disclosure [Line Items]
Total passenger revenue	12,523	12,421	37,184	36,502
Passenger | Domestic
Airline Destination Disclosure [Line Items]
Total passenger revenue	8,681	8,616	26,285	25,848
Passenger | Domestic | American Airlines, Inc.
Airline Destination Disclosure [Line Items]
Total passenger revenue	8,681	8,616	26,285	25,848
Passenger | Latin America
Airline Destination Disclosure [Line Items]
Total passenger revenue	1,433	1,490	4,897	5,045
Passenger | Latin America | American Airlines, Inc.
Airline Destination Disclosure [Line Items]
Total passenger revenue	1,433	1,490	4,897	5,045
Passenger | Atlantic
Airline Destination Disclosure [Line Items]
Total passenger revenue	2,110	2,056	5,122	4,875
Passenger | Atlantic | American Airlines, Inc.
Airline Destination Disclosure [Line Items]
Total passenger revenue	2,110	2,056	5,122	4,875
Passenger | Pacific
Airline Destination Disclosure [Line Items]
Total passenger revenue	299	259	880	734
Passenger | Pacific | American Airlines, Inc.
Airline Destination Disclosure [Line Items]
Total passenger revenue	$ 299	$ 259	$ 880	$ 734