Revenue Recognition - Passenger Revenue by Geographic Region (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Airline Destination Disclosure [Line Items]
Total passenger revenue	$ 14,334	$ 14,055	$ 26,904	$ 26,244
American Airlines, Inc.
Airline Destination Disclosure [Line Items]
Total passenger revenue	14,333	14,054	26,902	26,242
Passenger
Airline Destination Disclosure [Line Items]
Total passenger revenue	13,202	12,978	24,661	24,081
Passenger | American Airlines, Inc.
Airline Destination Disclosure [Line Items]
Total passenger revenue	13,202	12,978	24,661	24,081
Passenger | Domestic
Airline Destination Disclosure [Line Items]
Total passenger revenue	9,342	9,195	17,604	17,232
Passenger | Domestic | American Airlines, Inc.
Airline Destination Disclosure [Line Items]
Total passenger revenue	9,342	9,195	17,604	17,232
Passenger | Latin America
Airline Destination Disclosure [Line Items]
Total passenger revenue	1,562	1,640	3,464	3,555
Passenger | Latin America | American Airlines, Inc.
Airline Destination Disclosure [Line Items]
Total passenger revenue	1,562	1,640	3,464	3,555
Passenger | Atlantic
Airline Destination Disclosure [Line Items]
Total passenger revenue	2,019	1,888	3,012	2,819
Passenger | Atlantic | American Airlines, Inc.
Airline Destination Disclosure [Line Items]
Total passenger revenue	2,019	1,888	3,012	2,819
Passenger | Pacific
Airline Destination Disclosure [Line Items]
Total passenger revenue	279	255	581	475
Passenger | Pacific | American Airlines, Inc.
Airline Destination Disclosure [Line Items]
Total passenger revenue	$ 279	$ 255	$ 581	$ 475