Condensed Consolidated Statements of Stockholders' Deficit - American Airlines, Inc. - USD ($) $ in Millions	Total	American Airlines, Inc.	Common Stock	Common Stock American Airlines, Inc.	Additional Paid-in Capital	Additional Paid-in Capital American Airlines, Inc.	Accumulated Other Comprehensive Loss	Accumulated Other Comprehensive Loss American Airlines, Inc.	Retained Deficit	Retained Deficit American Airlines, Inc.
Beginning balance at Dec. 31, 2020	$ (6,867)	$ 4,348	$ 6	$ 0	$ 6,894	$ 17,050	$ (7,103)	$ (7,194)	$ (6,664)	$ (5,508)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss	(1,250)	(1,215)							(1,250)	(1,215)
Other comprehensive income, net	67	66					67	66
Share-based compensation expense	38	38			38	38
Ending balance at Mar. 31, 2021	(7,945)	3,237	6	0	6,980	17,088	(7,036)	(7,128)	(7,895)	(6,723)
Beginning balance at Dec. 31, 2021	(7,340)	3,826	6	0	7,234	17,152	(5,942)	(6,041)	(8,638)	(7,285)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss	(1,635)	(1,578)							(1,635)	(1,578)
Other comprehensive income, net	26	26					26	26
Share-based compensation expense	23	23			23	23
Ending balance at Mar. 31, 2022	$ (8,940)	$ 2,297	$ 6	$ 0	$ 7,243	$ 17,175	$ (5,916)	$ (6,015)	$ (10,273)	$ (8,863)