Condensed Consolidated Statements of Stockholders' Deficit - American Airlines Group Inc. - USD ($) $ in Millions	Total	PSP2 Warrants	PSP2 and PSP3 Warrants	At-The-Market Offering	Cumulative Effect, Period of Adoption, Adjustment	Common Stock	Common Stock At-The-Market Offering	Additional Paid-in Capital	Additional Paid-in Capital PSP2 Warrants	Additional Paid-in Capital PSP2 and PSP3 Warrants	Additional Paid-in Capital At-The-Market Offering	Additional Paid-in Capital Cumulative Effect, Period of Adoption, Adjustment	Accumulated Other Comprehensive Loss	Retained Deficit	Retained Deficit Cumulative Effect, Period of Adoption, Adjustment
Beginning balance at Dec. 31, 2020	$ (6,867)				$ (301)	$ 6		$ 6,894				$ (320)	$ (7,103)	$ (6,664)	$ 19
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	(1,250)													(1,250)
Other comprehensive income, net	67												67
Issuance of shares of AAG common stock pursuant to employee stock plans net of shares withheld for cash taxes	(13)							(13)
Issuance of AAG common stock, net of offering costs				$ 316							$ 316
Issuance of Warrants		$ 65							$ 65
Share-based compensation expense	38							38
Ending balance at Mar. 31, 2021	(7,945)					6		6,980					(7,036)	(7,895)
Beginning balance at Dec. 31, 2020	(6,867)				$ (301)	6		6,894				$ (320)	(7,103)	(6,664)	$ 19
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	(1,061)
Other comprehensive income, net	146
Ending balance at Sep. 30, 2021	(7,437)					6		7,221					(6,957)	(7,707)
Beginning balance at Mar. 31, 2021	(7,945)					6		6,980					(7,036)	(7,895)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	19													19
Other comprehensive income, net	39												39
Issuance of shares of AAG common stock pursuant to employee stock plans net of shares withheld for cash taxes	0							0
Issuance of AAG common stock, net of offering costs				$ 144			$ 0				$ 144
Issuance of Warrants			$ 56							$ 56
Share-based compensation expense	20							20
Ending balance at Jun. 30, 2021	(7,667)					6		7,200					(6,997)	(7,876)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	169													169
Other comprehensive income, net	40												40
Issuance of shares of AAG common stock pursuant to employee stock plans net of shares withheld for cash taxes	0							0
Share-based compensation expense	21							21
Ending balance at Sep. 30, 2021	(7,437)					6		7,221					(6,957)	(7,707)
Beginning balance at Dec. 31, 2021	(7,340)					6		7,234					(5,942)	(8,638)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	(1,635)													(1,635)
Other comprehensive income, net	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
Ending balance at Mar. 31, 2022	(8,940)					6		7,243					(5,916)	(10,273)
Beginning balance at Dec. 31, 2021	(7,340)					6		7,234					(5,942)	(8,638)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	(676)
Other comprehensive income, net	80
Ending balance at Sep. 30, 2022	(7,893)					6		7,277					(5,862)	(9,314)
Beginning balance at Mar. 31, 2022	(8,940)					6		7,243					(5,916)	(10,273)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	476													476
Other comprehensive income, net	26												26
Issuance of shares of AAG common stock pursuant to employee stock plans net of shares withheld for cash taxes	(2)							(2)
Share-based compensation expense	18							18
Ending balance at Jun. 30, 2022	(8,422)					6		7,259					(5,890)	(9,797)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	483													483
Other comprehensive income, net	28												28
Issuance of shares of AAG common stock pursuant to employee stock plans net of shares withheld for cash taxes	0							0
Share-based compensation expense	18							18
Ending balance at Sep. 30, 2022	$ (7,893)					$ 6		$ 7,277					$ (5,862)	$ (9,314)