Condensed Consolidated Statements of Comprehensive Income (Loss) - American Airlines Group Inc. - USD ($) $ in Millions	3 Months Ended						9 Months Ended
	Sep. 30, 2025	Jun. 30, 2025	Mar. 31, 2025	Sep. 30, 2024	Jun. 30, 2024	Mar. 31, 2024	Sep. 30, 2025	Sep. 30, 2024
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ (114)	$ 599	$ (473)	$ (149)	$ 717	$ (312)	$ 12	$ 256
Other comprehensive income, net of tax:
Pension, retiree medical and other postretirement benefits	15			18			50	55
Investments	0			5			0	4
Total other comprehensive income, net of tax	15	$ 17	$ 18	23	$ 19	$ 17	50	59
Total comprehensive income (loss)	$ (99)			$ (126)			$ 62	$ 315