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, 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, net	(71)	(69)					(71)	(69)
Issuance of shares of AAG common stock pursuant to employee stock plans net of shares withheld for cash taxes	(51)				(51)
Purchase and retirement of AAG common stock	(1,563)		0		(1,563)
Dividends declared on AAG common stock	(198)								(198)
Settlement of single-dip unsecured claims held in Disputed Claims Reserve	15				15
Share-based compensation expense	90	90			90	90
Intercompany equity transfer		2				2
Adoption of Accounting Standards Update (ASU) 2018-02 related to comprehensive income							(622)	(622)	622	622
Ending Balance at Dec. 31, 2017	(780)	9,888	5	0	5,714	16,716	(5,776)	(5,873)	(723)	(955)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	1,412	1,658							1,412	1,658
Other comprehensive loss, net	(120)	(119)					(120)	(119)
Issuance of shares of AAG common stock pursuant to employee stock plans net of shares withheld for cash taxes	(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	(5,896)	(5,992)	758	960
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	1,686	1,972							1,686	1,972
Other comprehensive loss, net	(435)	(431)					(435)	(431)
Issuance of shares of AAG common stock pursuant to employee stock plans net of shares withheld for cash taxes	(25)				(25)
Purchase and retirement of AAG common stock	(1,096)		(1)		(1,095)
Dividends declared on AAG common stock	(180)								(180)
Settlement of single-dip unsecured claims held in Disputed Claims Reserve	7				7
Share-based compensation expense	94	94			94	94
Intercompany equity transfer		17				7				10
Ending Balance at Dec. 31, 2019	$ (118)	$ 13,422	$ 4	$ 0	$ 3,945	$ 16,903	$ (6,331)	$ (6,423)	$ 2,264	$ 2,942