Transactions with Related Parties - Summary of Net Payables to (Receivables from) Related Parties (Detail) - American Airlines, Inc. [Member] - USD ($) $ in Millions	Sep. 30, 2015	Dec. 31, 2014
Related Party Transaction [Line Items]
Net payables to related parties	$ 565	$ 2,563
American Airlines Group (Parent Company Only) [Member]
Related Party Transaction [Line Items]
Net payables to related parties	(1,994)	40
US Airways Group [Member]
Related Party Transaction [Line Items]
Net payables to related parties	476	320
Envoy Aviation Group (1) and other subsidiaries [Member]
Related Party Transaction [Line Items]
Net payables to related parties	$ 2,083	$ 2,203