Revenue Recognition - Passenger Revenue by Geographic Region (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
Airline Destination Disclosure [Line Items]
Total passenger revenue	$ 12,551	$ 12,570
American Airlines, Inc.
Airline Destination Disclosure [Line Items]
Total passenger revenue	12,549	12,569
Passenger
Airline Destination Disclosure [Line Items]
Total passenger revenue	11,391	11,458
Passenger | American Airlines, Inc.
Airline Destination Disclosure [Line Items]
Total passenger revenue	11,391	11,458
Passenger | Domestic
Airline Destination Disclosure [Line Items]
Total passenger revenue	8,127	8,262
Passenger | Domestic | American Airlines, Inc.
Airline Destination Disclosure [Line Items]
Total passenger revenue	8,127	8,262
Passenger | Latin America
Airline Destination Disclosure [Line Items]
Total passenger revenue	1,906	1,902
Passenger | Latin America | American Airlines, Inc.
Airline Destination Disclosure [Line Items]
Total passenger revenue	1,906	1,902
Passenger | Atlantic
Airline Destination Disclosure [Line Items]
Total passenger revenue	965	992
Passenger | Atlantic | American Airlines, Inc.
Airline Destination Disclosure [Line Items]
Total passenger revenue	965	992
Passenger | Pacific
Airline Destination Disclosure [Line Items]
Total passenger revenue	393	302
Passenger | Pacific | American Airlines, Inc.
Airline Destination Disclosure [Line Items]
Total passenger revenue	$ 393	$ 302