Consolidated Statements of Comprehensive Income (Loss) - American Airlines Group Inc. - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ 822	$ 127	$ (1,993)
Other comprehensive income (loss), net of tax:
Pension, retiree medical and other postretirement benefits	(312)	1,360	1,161
Investments	3	(3)	0
Total other comprehensive income (loss), net of tax	(309)	1,357	1,161
Total comprehensive income (loss)	$ 513	$ 1,484	$ (832)