Revenue Recognition - Significant Categories of Reported Operating Revenues (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Revenue from External Customer [Line Items]
Operating revenues	$ 12,189	$ 8,899
Passenger
Revenue from External Customer [Line Items]
Operating revenues	11,103	7,818
Passenger travel
Revenue from External Customer [Line Items]
Operating revenues	10,291	7,213
Loyalty revenue - travel
Revenue from External Customer [Line Items]
Operating revenues	812	605
Cargo
Revenue from External Customer [Line Items]
Operating revenues	223	364
Other
Revenue from External Customer [Line Items]
Operating revenues	863	717
Loyalty revenue - marketing services
Revenue from External Customer [Line Items]
Operating revenues	722	596
Other revenue
Revenue from External Customer [Line Items]
Operating revenues	141	121
American Airlines, Inc.
Revenue from External Customer [Line Items]
Operating revenues	12,188	8,896
American Airlines, Inc. | Passenger
Revenue from External Customer [Line Items]
Operating revenues	11,103	7,818
American Airlines, Inc. | Passenger travel
Revenue from External Customer [Line Items]
Operating revenues	10,291	7,213
American Airlines, Inc. | Loyalty revenue - travel
Revenue from External Customer [Line Items]
Operating revenues	812	605
American Airlines, Inc. | Cargo
Revenue from External Customer [Line Items]
Operating revenues	223	364
American Airlines, Inc. | Other
Revenue from External Customer [Line Items]
Operating revenues	862	714
American Airlines, Inc. | Loyalty revenue - marketing services
Revenue from External Customer [Line Items]
Operating revenues	722	596
American Airlines, Inc. | Other revenue
Revenue from External Customer [Line Items]
Operating revenues	$ 140	$ 118