Revenue Recognition - Passenger Revenue by Geographic Region (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Airline Destination Disclosure [Line Items]
Operating revenues	$ 8,899	$ 4,008
Passenger
Airline Destination Disclosure [Line Items]
Operating revenues	7,818	3,179
Passenger | Domestic
Airline Destination Disclosure [Line Items]
Operating revenues	6,060	2,655
Passenger | Latin America
Airline Destination Disclosure [Line Items]
Operating revenues	1,227	482
Passenger | Atlantic
Airline Destination Disclosure [Line Items]
Operating revenues	466	22
Passenger | Pacific
Airline Destination Disclosure [Line Items]
Operating revenues	65	20
American Airlines, Inc.
Airline Destination Disclosure [Line Items]
Operating revenues	8,896	4,008
American Airlines, Inc. | Passenger
Airline Destination Disclosure [Line Items]
Operating revenues	7,818	3,179
American Airlines, Inc. | Passenger | Domestic
Airline Destination Disclosure [Line Items]
Operating revenues	6,060	2,655
American Airlines, Inc. | Passenger | Latin America
Airline Destination Disclosure [Line Items]
Operating revenues	1,227	482
American Airlines, Inc. | Passenger | Atlantic
Airline Destination Disclosure [Line Items]
Operating revenues	466	22
American Airlines, Inc. | Passenger | Pacific
Airline Destination Disclosure [Line Items]
Operating revenues	$ 65	$ 20