Special Items - Additional Disclosures (Detail) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Restructuring Cost and Reserve [Line Items]
Operating special items, net	$ 99	$ 303
American Airlines, Inc. [Member]
Restructuring Cost and Reserve [Line Items]
Operating special items, net	$ 99	$ 303