Revenue Recognition - Passenger Revenue by Geographic Region (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Airline Destination Disclosure [Line Items]
Total passenger revenue	$ 14,392	$ 14,334	$ 26,943	$ 26,904
American Airlines, Inc.
Airline Destination Disclosure [Line Items]
Total passenger revenue	14,390	14,333	26,940	26,902
Passenger
Airline Destination Disclosure [Line Items]
Total passenger revenue	13,123	13,202	24,514	24,661
Passenger | American Airlines, Inc.
Airline Destination Disclosure [Line Items]
Total passenger revenue	13,123	13,202	24,514	24,661
Passenger | Domestic
Airline Destination Disclosure [Line Items]
Total passenger revenue	9,159	9,342	17,286	17,604
Passenger | Domestic | American Airlines, Inc.
Airline Destination Disclosure [Line Items]
Total passenger revenue	9,159	9,342	17,286	17,604
Passenger | Latin America
Airline Destination Disclosure [Line Items]
Total passenger revenue	1,550	1,562	3,455	3,464
Passenger | Latin America | American Airlines, Inc.
Airline Destination Disclosure [Line Items]
Total passenger revenue	1,550	1,562	3,455	3,464
Passenger | Atlantic
Airline Destination Disclosure [Line Items]
Total passenger revenue	2,086	2,019	3,052	3,012
Passenger | Atlantic | American Airlines, Inc.
Airline Destination Disclosure [Line Items]
Total passenger revenue	2,086	2,019	3,052	3,012
Passenger | Pacific
Airline Destination Disclosure [Line Items]
Total passenger revenue	328	279	721	581
Passenger | Pacific | American Airlines, Inc.
Airline Destination Disclosure [Line Items]
Total passenger revenue	$ 328	$ 279	$ 721	$ 581