Revenue Recognition - Significant Categories of Reported Operating Revenues (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Revenue from External Customer [Line Items]
Operating revenues	$ 8,899	$ 4,008
Passenger
Revenue from External Customer [Line Items]
Operating revenues	7,818	3,179
Passenger travel
Revenue from External Customer [Line Items]
Operating revenues	7,213	2,893
Loyalty revenue - travel
Revenue from External Customer [Line Items]
Operating revenues	605	286
Cargo
Revenue from External Customer [Line Items]
Operating revenues	364	315
Other
Revenue from External Customer [Line Items]
Operating revenues	717	514
Loyalty revenue - marketing services
Revenue from External Customer [Line Items]
Operating revenues	596	457
Co-branded credit card and other partners
Revenue from External Customer [Line Items]
Operating revenues	1,400	1,000
Other revenue
Revenue from External Customer [Line Items]
Operating revenues	121	57
American Airlines, Inc.
Revenue from External Customer [Line Items]
Operating revenues	8,896	4,008
American Airlines, Inc. | Passenger
Revenue from External Customer [Line Items]
Operating revenues	7,818	3,179
American Airlines, Inc. | Passenger travel
Revenue from External Customer [Line Items]
Operating revenues	7,213	2,893
American Airlines, Inc. | Loyalty revenue - travel
Revenue from External Customer [Line Items]
Operating revenues	605	286
American Airlines, Inc. | Cargo
Revenue from External Customer [Line Items]
Operating revenues	364	315
American Airlines, Inc. | Other
Revenue from External Customer [Line Items]
Operating revenues	714	514
American Airlines, Inc. | Loyalty revenue - marketing services
Revenue from External Customer [Line Items]
Operating revenues	596	457
American Airlines, Inc. | Co-branded credit card and other partners
Revenue from External Customer [Line Items]
Operating revenues	1,400	1,000
American Airlines, Inc. | Other revenue
Revenue from External Customer [Line Items]
Operating revenues	$ 118	$ 57