Condensed Consolidated Statements of Stockholders' Deficit - American Airlines Group Inc. - USD ($) $ in Millions	Total	American Airlines, Inc.	PSP2 Warrants	At-The-Market Offering	Cumulative Effect, Period of Adoption, Adjustment	Common Stock	Common Stock American Airlines, Inc.	Additional Paid-in Capital	Additional Paid-in Capital American Airlines, Inc.	Additional Paid-in Capital PSP2 Warrants	Additional Paid-in Capital At-The-Market Offering	Additional Paid-in Capital Cumulative Effect, Period of Adoption, Adjustment	Accumulated Other Comprehensive Loss	Accumulated Other Comprehensive Loss American Airlines, Inc.	Retained Deficit	Retained Deficit American Airlines, Inc.	Retained Deficit Cumulative Effect, Period of Adoption, Adjustment
Beginning balance at Dec. 31, 2020	$ (6,867)	$ 4,348			$ 301	$ 6	$ 0	$ 6,894	$ 17,050			$ (320)	$ (7,103)	$ (7,194)	$ (6,664)	$ (5,508)	$ 19
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
Issuance of shares of AAG common stock pursuant to employee stock plans net of shares withheld for cash taxes	$ (13)							(13)
Accounting Standards Update [Extensible List]	Accounting Standards Update 2020-06 [Member]
Issuance of AAG common stock, net of offering costs				$ 316							$ 316
Issuance of Warrants			$ 65							$ 65
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
Issuance of shares of AAG common stock pursuant to employee stock plans net of shares withheld for cash taxes	(14)							(14)
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)