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	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, 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	1,348					1,508
Other comprehensive income, net	35					35
Ending balance at Jun. 30, 2023	(4,385)	7	7,321	(4,550)	(7,163)	7,182	0	17,276	(4,655)	(5,439)
Beginning balance at Mar. 31, 2023	(5,771)	7	7,290	(4,567)	(8,501)	5,710	0	17,244	(4,672)	(6,862)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	1,338				1,338	1,423				1,423
Other comprehensive income, net	17			17		17			17
Share-based compensation expense	32		32			32		32
Ending balance at Jun. 30, 2023	(4,385)	7	7,321	(4,550)	(7,163)	7,182	0	17,276	(4,655)	(5,439)
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	(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)
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	405					577
Other comprehensive income, net	36					36
Ending balance at Jun. 30, 2024	(4,746)	7	7,389	(4,858)	(7,284)	7,219	0	17,364	(4,963)	(5,182)
Beginning balance at Mar. 31, 2024	(5,500)	7	7,371	(4,877)	(8,001)	6,386	0	17,343	(4,982)	(5,975)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	717				717	793				793
Other comprehensive income, net	19			19		19			19
Share-based compensation expense	21		21			20		20
Intercompany equity transfer						1		1
Ending balance at Jun. 30, 2024	$ (4,746)	$ 7	$ 7,389	$ (4,858)	$ (7,284)	$ 7,219	$ 0	$ 17,364	$ (4,963)	$ (5,182)