Consolidated Statements of Stockholders' Equity - USD ($) $ in Millions	Total	American Airlines, Inc. [Member]	Common Stock [Member]	Common Stock [Member] American Airlines, Inc. [Member]	Additional Paid-in Capital [Member]	Additional Paid-in Capital [Member] American Airlines, Inc. [Member]	Accumulated Other Comprehensive Loss [Member]	Accumulated Other Comprehensive Loss [Member] American Airlines, Inc. [Member]	Retained Earnings (Deficit) [Member]	Retained Earnings (Deficit) [Member] American Airlines, Inc. [Member]
Beginning Balance at Dec. 31, 2015	$ 5,635	$ 9,698	$ 6	$ 0	$ 11,591	$ 16,521	$ (4,732)	$ (4,831)	$ (1,230)	$ (1,992)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	2,584	2,689							2,584	2,689
Other comprehensive loss	(351)	(351)					(351)	(351)
Cash tax withholding on shares issued	(56)				(56)
Purchase and retirement of AAG common stock	(4,416)		(1)		(4,415)
Dividends declared on AAG common stock	(224)								(224)
Settlement of single-dip unsecured claims held in distributed claims reserve	3				3
Share-based compensation expense	100	100			100	100
Intercompany equity transfer		3				3
Ending Balance at Dec. 31, 2016	(284)	8,580	5	0	7,223	16,624	(5,083)	(5,182)	(2,429)	(2,862)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	1,282	1,285							1,282	1,285
Other comprehensive loss	(71)	(69)					(71)	(69)
Cash tax withholding on shares issued	(51)				(51)
Purchase and retirement of AAG common stock	(1,563)				(1,563)
Dividends declared on AAG common stock	(198)								(198)
Settlement of single-dip unsecured claims held in distributed claims reserve	15				15
Share-based compensation expense	90	90			90	90
Intercompany equity transfer		2				2
Ending Balance at Dec. 31, 2017	(780)	9,888	5	0	5,714	16,716	(5,154)	(5,251)	(1,345)	(1,577)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	1,412	1,658							1,412	1,658
Other comprehensive loss	(120)	(119)					(120)	(119)
Cash tax withholding on shares issued	(37)				(37)
Purchase and retirement of AAG common stock	(799)				(799)
Dividends declared on AAG common stock	(188)								(188)
Share-based compensation expense	86	86			86	86
Ending Balance at Dec. 31, 2018	$ (169)	$ 11,770	$ 5	$ 0	$ 4,964	$ 16,802	$ (5,274)	$ (5,370)	$ 136	$ 338