Transactions with Related Parties - Additional Information (Detail) - USD ($) $ in Billions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
American Airlines, Inc. [Member] | American Airlines Group's Wholly Owned Subsidiaries [Member] | Regional Carrier [Member] | Capacity Purchase Arrangements [Member]
Related Party Transaction [Line Items]
Related party transaction, expense recognized	$ 1.2	$ 1.2	$ 1.0