Accumulated Other Comprehensive Loss - Reclassifications out of AOCI (Details) - USD ($) $ in Millions	3 Months Ended						9 Months Ended
	Sep. 30, 2022	Jun. 30, 2022	Mar. 31, 2022	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Sep. 30, 2022	Sep. 30, 2021
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Nonoperating other income, net	$ 272			$ 389			$ 1,049	$ 1,078
Net income (loss)	(483)	$ (476)	$ 1,635	(169)	$ (19)	$ 1,250	676	1,061
American Airlines, Inc.
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Nonoperating other income, net	215			345			906	949
Net income (loss)	(540)	$ (521)	$ 1,578	(280)	$ (51)	$ 1,215	517	884
Reclassification out of Accumulated Other Comprehensive Income
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Net income (loss)	29			40			85	119
Reclassification out of Accumulated Other Comprehensive Income | Prior service cost
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Nonoperating other income, net	3			3			9	9
Reclassification out of Accumulated Other Comprehensive Income | Actuarial loss
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Nonoperating other income, net	26			37			76	110
Reclassification out of Accumulated Other Comprehensive Income | American Airlines, Inc.
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Net income (loss)	29			40			85	118
Reclassification out of Accumulated Other Comprehensive Income | American Airlines, Inc. | Prior service cost
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Nonoperating other income, net	3			3			9	9
Reclassification out of Accumulated Other Comprehensive Income | American Airlines, Inc. | Actuarial loss
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Nonoperating other income, net	$ 26			$ 37			$ 76	$ 109