Accumulated Other Comprehensive Loss - Reclassifications out of AOCI (Details) - USD ($) $ in Millions	3 Months Ended				6 Months Ended
	Jun. 30, 2023	Mar. 31, 2023	Jun. 30, 2022	Mar. 31, 2022	Jun. 30, 2023	Jun. 30, 2022
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Nonoperating other income (expense), net	$ 400		$ 414		$ 821	$ 777
Net income (loss)	(1,338)	$ (10)	(476)	$ 1,635	(1,348)	1,159
American Airlines, Inc.
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Nonoperating other income (expense), net	295		373		620	692
Net income (loss)	(1,423)	$ (85)	(521)	$ 1,578	(1,508)	1,057
Reclassification out of Accumulated Other Comprehensive Income
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Net income (loss)	17		28		34	56
Reclassification out of Accumulated Other Comprehensive Income | Prior service cost
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Nonoperating other income (expense), 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 (expense), net	14		25		28	50
Reclassification out of Accumulated Other Comprehensive Income | American Airlines, Inc.
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Net income (loss)	17		28		34	56
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 (expense), 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 (expense), net	$ 14		$ 25		$ 28	$ 50