Condensed Consolidated Statements of Comprehensive Loss - American Airlines Group Inc. - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2026	Mar. 31, 2025
Statement of Comprehensive Income [Abstract]
Net loss	$ (382)	$ (473)
Other comprehensive income (loss), net of tax:
Pension, retiree medical and other postretirement benefits	19	18
Investments	(2)	0
Total other comprehensive income, net of tax	17	18
Total comprehensive loss	$ (365)	$ (455)