Accumulated Other Comprehensive Income (Loss) - Additional Information (Detail) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Jun. 30, 2014	Dec. 31, 2014
Accumulated Other Comprehensive Income (Loss) [Line Items]
Non-cash tax provision on sale of fuel hedging contracts	$ 330
American Airlines, Inc. [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Non-cash tax provision on sale of fuel hedging contracts	328
Fuel Hedging Contracts [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Non-cash tax provision on sale of fuel hedging contracts	330	$ 330
Amounts reclassified from accumulated other comprehensive income (loss)	330
Fuel Hedging Contracts [Member] | American Airlines, Inc. [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Non-cash tax provision on sale of fuel hedging contracts	328	$ 328
Amounts reclassified from accumulated other comprehensive income (loss)	$ 328