Revenue Recognition - Significant Categories of Reported Operating Revenues (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Revenue from External Customer [Line Items]
Operating revenues	$ 14,055	$ 13,422	$ 26,244	$ 22,321
Passenger
Revenue from External Customer [Line Items]
Operating revenues	12,978	12,223	24,081	20,041
Passenger travel
Revenue from External Customer [Line Items]
Operating revenues	12,057	11,400	22,348	18,613
Loyalty revenue - travel
Revenue from External Customer [Line Items]
Operating revenues	921	823	1,733	1,428
Cargo
Revenue from External Customer [Line Items]
Operating revenues	197	328	420	692
Other
Revenue from External Customer [Line Items]
Operating revenues	880	871	1,743	1,588
Loyalty revenue - marketing services
Revenue from External Customer [Line Items]
Operating revenues	741	740	1,463	1,336
Other revenue
Revenue from External Customer [Line Items]
Operating revenues	139	131	280	252
American Airlines, Inc.
Revenue from External Customer [Line Items]
Operating revenues	14,054	13,421	26,242	22,317
American Airlines, Inc. | Passenger
Revenue from External Customer [Line Items]
Operating revenues	12,978	12,223	24,081	20,041
American Airlines, Inc. | Passenger travel
Revenue from External Customer [Line Items]
Operating revenues	12,057	11,400	22,348	18,613
American Airlines, Inc. | Loyalty revenue - travel
Revenue from External Customer [Line Items]
Operating revenues	921	823	1,733	1,428
American Airlines, Inc. | Cargo
Revenue from External Customer [Line Items]
Operating revenues	197	328	420	692
American Airlines, Inc. | Other
Revenue from External Customer [Line Items]
Operating revenues	879	870	1,741	1,584
American Airlines, Inc. | Loyalty revenue - marketing services
Revenue from External Customer [Line Items]
Operating revenues	741	740	1,463	1,336
American Airlines, Inc. | Other revenue
Revenue from External Customer [Line Items]
Operating revenues	$ 138	$ 130	$ 278	$ 248