Accumulated Other Comprehensive Loss - Reclassifications out of AOCI (Details) - USD ($) $ in Millions	3 Months Ended				6 Months Ended
	Jun. 30, 2022	Mar. 31, 2022	Jun. 30, 2021	Mar. 31, 2021	Jun. 30, 2022	Jun. 30, 2021
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Nonoperating other income, net	$ 414		$ 432		$ 777	$ 690
Net income (loss)	(476)	$ 1,635	(19)	$ 1,250	1,159	1,231
American Airlines, Inc.
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Nonoperating other income, net	373		389		692	604
Net income (loss)	(521)	$ 1,578	(51)	$ 1,215	1,057	1,165
Reclassification out of Accumulated Other Comprehensive Income
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Net income (loss)	28		39		56	79
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		6	6
Reclassification out of Accumulated Other Comprehensive Income | Actuarial loss
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Nonoperating other income, net	25		36		50	73
Reclassification out of Accumulated Other Comprehensive Income | American Airlines, Inc.
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Net income (loss)	28		39		56	78
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		6	6
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	$ 25		$ 36		$ 50	$ 72