Revenue Recognition - Significant Categories of Reported Operating Revenues (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Revenue from External Customer [Line Items]
Operating revenues	$ 13,422	$ 7,478	$ 22,321	$ 11,486
Passenger
Revenue from External Customer [Line Items]
Operating revenues	12,223	6,545	20,041	9,724
Passenger travel
Revenue from External Customer [Line Items]
Operating revenues	11,400	5,995	18,613	8,888
Loyalty revenue - travel
Revenue from External Customer [Line Items]
Operating revenues	823	550	1,428	836
Cargo
Revenue from External Customer [Line Items]
Operating revenues	328	326	692	641
Other
Revenue from External Customer [Line Items]
Operating revenues	871	607	1,588	1,121
Loyalty revenue - marketing services
Revenue from External Customer [Line Items]
Operating revenues	740	529	1,336	986
Co-branded credit card and other partners
Revenue from External Customer [Line Items]
Operating revenues	1,000	684	2,400	1,700
Other revenue
Revenue from External Customer [Line Items]
Operating revenues	131	78	252	135
American Airlines, Inc.
Revenue from External Customer [Line Items]
Operating revenues	13,421	7,478	22,317	11,485
American Airlines, Inc. | Passenger
Revenue from External Customer [Line Items]
Operating revenues	12,223	6,545	20,041	9,724
American Airlines, Inc. | Passenger travel
Revenue from External Customer [Line Items]
Operating revenues	11,400	5,995	18,613	8,888
American Airlines, Inc. | Loyalty revenue - travel
Revenue from External Customer [Line Items]
Operating revenues	823	550	1,428	836
American Airlines, Inc. | Cargo
Revenue from External Customer [Line Items]
Operating revenues	328	326	692	641
American Airlines, Inc. | Other
Revenue from External Customer [Line Items]
Operating revenues	870	607	1,584	1,120
American Airlines, Inc. | Loyalty revenue - marketing services
Revenue from External Customer [Line Items]
Operating revenues	740	529	1,336	986
American Airlines, Inc. | Co-branded credit card and other partners
Revenue from External Customer [Line Items]
Operating revenues	1,000	684	2,400	1,700
American Airlines, Inc. | Other revenue
Revenue from External Customer [Line Items]
Operating revenues	$ 130	$ 78	$ 248	$ 134