Condensed Consolidated Statements of Comprehensive Income (Loss) - American Airlines Group Inc. - USD ($) $ in Millions	3 Months Ended						9 Months Ended
	Sep. 30, 2024	Jun. 30, 2024	Mar. 31, 2024	Sep. 30, 2023	Jun. 30, 2023	Mar. 31, 2023	Sep. 30, 2024	Sep. 30, 2023
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ (149)	$ 717	$ (312)	$ (545)	$ 1,338	$ 10	$ 256	$ 803
Other comprehensive income (loss), net of tax:
Pension, retiree medical and other postretirement benefits	18			(237)			55	(203)
Investments	5			(1)			4	0
Total other comprehensive income (loss), net of tax	23	$ 19	$ 17	(238)	$ 17	$ 18	59	(203)
Total comprehensive income (loss)	$ (126)			$ (783)			$ 315	$ 600