Condensed Consolidated Statements of Stockholders' Deficit - American Airlines Group Inc. - USD ($) $ in Millions	Total	Common Stock	Additional Paid-in Capital	Accumulated Other Comprehensive Loss	Retained Deficit
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 (loss), 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 (loss), 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 (loss), 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 (loss), 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)
Beginning balance at Dec. 31, 2022	(5,799)	6	7,291	(4,585)	(8,511)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	10				10
Other comprehensive income (loss), net	18			18
Issuance of shares of AAG common stock pursuant to employee stock plans net of shares withheld for cash taxes	(15)	1	(16)
Share-based compensation expense	15		15
Ending balance at Mar. 31, 2023	(5,771)	7	7,290	(4,567)	(8,501)
Beginning balance at Dec. 31, 2022	(5,799)	6	7,291	(4,585)	(8,511)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	803
Other comprehensive income (loss), net	(203)
Ending balance at Sep. 30, 2023	(5,136)	7	7,353	(4,788)	(7,708)
Beginning balance at Mar. 31, 2023	(5,771)	7	7,290	(4,567)	(8,501)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	1,338				1,338
Other comprehensive income (loss), net	17			17
Issuance of shares of AAG common stock pursuant to employee stock plans net of shares withheld for cash taxes	(1)		(1)
Share-based compensation expense	32		32
Ending balance at Jun. 30, 2023	(4,385)	7	7,321	(4,550)	(7,163)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	(545)				(545)
Other comprehensive income (loss), net	(238)			(238)
Issuance of shares of AAG common stock pursuant to employee stock plans net of shares withheld for cash taxes	(1)		(1)
Share-based compensation expense	29		29
Settlement of Single-Dip Unsecured claims held in the Disputed Claims Reserve	4		4
Ending balance at Sep. 30, 2023	$ (5,136)	$ 7	$ 7,353	$ (4,788)	$ (7,708)