Income Taxes - Components of Income Tax Provision (Benefit) (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Components Of Income Taxes [Line Items]
Federal			$ (25)
State and Local	$ 12	$ 20	9
Current income tax provision (benefit)	12	20	(16)
Federal	1,508	(2,884)	345
State and Local	103	(130)	1
Deferred income tax provision (benefit)	1,611	(3,014)	346
Income tax provision (benefit)	1,623	(2,994)	330
American Airlines, Inc. [Member]
Components Of Income Taxes [Line Items]
Federal			(30)
State and Local	10	15	6
Current income tax provision (benefit)	10	15	(24)
Federal	1,559	(3,407)	342
State and Local	93	(60)	2
Deferred income tax provision (benefit)	1,652	(3,467)	344
Income tax provision (benefit)	$ 1,662	$ (3,452)	$ 320