Condensed Consolidated Statements of Stockholder's Equity - American Airlines, Inc. - USD ($) $ in Millions	Total	Common Stock	Additional Paid-in Capital	Accumulated Other Comprehensive Loss	Retained Deficit	American Airlines, Inc.	American Airlines, Inc. Common Stock	American Airlines, Inc. Additional Paid-in Capital	American Airlines, Inc. Accumulated Other Comprehensive Loss	American Airlines, Inc. Retained Deficit
Beginning balance at Dec. 31, 2022	$ (5,799)	$ 6	$ 7,291	$ (4,585)	$ (8,511)	$ 5,593	$ 0	$ 17,230	$ (4,690)	$ (6,947)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	10				10	85				85
Other comprehensive income, net	18			18		18			18
Share-based compensation expense	15		15			14		14
Ending balance at Mar. 31, 2023	(5,771)	7	7,290	(4,567)	(8,501)	5,710	0	17,244	(4,672)	(6,862)
Beginning balance at Dec. 31, 2023	(5,202)	7	7,374	(4,894)	(7,689)	6,577	0	17,335	(4,999)	(5,759)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	(312)				(312)	(216)				(216)
Other comprehensive income, net	17			17		17			17
Share-based compensation expense	28		28			27		27
Modification of share-based awards	(20)		(20)			(20)		(20)
Intercompany equity transfer						1		1
Ending balance at Mar. 31, 2024	$ (5,500)	$ 7	$ 7,371	$ (4,877)	$ (8,001)	$ 6,386	$ 0	$ 17,343	$ (4,982)	$ (5,975)