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, 2023	$ (5,202)	$ 7	$ 7,374	$ (4,894)	$ (7,689)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss	(312)				(312)
Other comprehensive income, net	17			17
Issuance of shares of AAG common stock pursuant to employee stock plans net of shares withheld for cash taxes	(11)		(11)
Share-based compensation expense	28		28
Modification of share-based awards	(20)		(20)
Ending balance at Mar. 31, 2024	(5,500)	7	7,371	(4,877)	(8,001)
Beginning balance at Dec. 31, 2024	(3,977)	7	7,424	(4,565)	(6,843)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss	(473)				(473)
Other comprehensive income, net	18			18
Settlement of PSP1 and Treasury Loan Warrants (see Note 3)	(79)		(79)
Issuance of shares of AAG common stock pursuant to employee stock plans net of shares withheld for cash taxes	(13)		(13)
Share-based compensation expense	16		16
Ending balance at Mar. 31, 2025	$ (4,508)	$ 7	$ 7,348	$ (4,547)	$ (7,316)