Consolidated Statements of Stockholders' Equity - USD ($) $ in Millions	Total	American Airlines, Inc. [Member]	Common Stock [Member]	Additional Paid-in Capital [Member]	Additional Paid-in Capital [Member] American Airlines, Inc. [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Accumulated Other Comprehensive Income (Loss) [Member] American Airlines, Inc. [Member]	Retained Earnings (Deficit) [Member]	Retained Earnings (Deficit) [Member] American Airlines, Inc. [Member]
Beginning Balance at Dec. 31, 2014	$ 2,021	$ 1,406	$ 7	$ 15,135	$ 16,174	$ (4,559)	$ (4,656)	$ (8,562)	$ (10,112)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	7,610	8,120						7,610	8,120
Changes in pension, retiree medical and other postretirement benefits liability	(159)	(160)				(159)	(160)
Net changes in fair value of derivative financial instruments	(9)	(9)				(9)	(9)
Cash tax withholding on shares issued	(306)			(306)
Purchase and retirement of common stock	(3,586)		(1)	(3,585)
Dividends declared on common stock	(278)							(278)
Settlement of single-dip unsecured claims held in distributed claims reserve	63			63
Share-based compensation expense	284	284		284	284
Intercompany equity transfer		63			63
Change in unrealized loss on investments	(5)	(6)				(5)	(6)
Ending Balance at Dec. 31, 2015	5,635	9,698	6	11,591	16,521	(4,732)	(4,831)	(1,230)	(1,992)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	2,676	2,781						2,676	2,781
Changes in pension, retiree medical and other postretirement benefits liability	(564)	(563)				(564)	(563)
Non-cash tax benefit	203	203				203	203
Cash tax withholding on shares issued	(56)			(56)
Purchase and retirement of common stock	(4,416)		(1)	(4,415)
Dividends declared on 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
Impact of adoption of Accounting Standards Update (ASU) 2016-09 related to share-based compensation (See Note 14)	418	418						418	418
Change in unrealized loss on investments	10	9				10	9
Ending Balance at Dec. 31, 2016	3,785	12,649	5	7,223	16,624	(5,083)	(5,182)	1,640	1,207
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	1,919	1,922						1,919	1,922
Changes in pension, retiree medical and other postretirement benefits liability	(117)	(114)				(117)	(114)
Non-cash tax benefit	47	46				47	46
Cash tax withholding on shares issued	(51)			(51)
Purchase and retirement of common stock	(1,563)			(1,563)
Dividends declared on 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
Change in unrealized loss on investments	(1)	(1)				(1)	(1)
Ending Balance at Dec. 31, 2017	$ 3,926	$ 14,594	$ 5	$ 5,714	$ 16,716	$ (5,154)	$ (5,251)	$ 3,361	$ 3,129