Bankruptcy Settlement Obligations - Additional Information (Detail) - USD ($)	9 Months Ended	12 Months Ended
	Sep. 30, 2015	Dec. 31, 2014	Jul. 14, 2015	Feb. 10, 2015	Dec. 09, 2013
Bankruptcy Settlement Obligations [Line Items]
Single-dip equity obligations	$ 135,000,000	$ 248,000,000			$ 2,500,000,000
Shares issued per $1,000 in reduction of allowed claims	30.7553
Allowed claims including tax liabilities	$ 1,000
Labor-related deemed claim		1,500,000,000
Labor-related deemed claim	42,000,000	77,000,000
Shares released from restriction and issued			600,000	800,000
Common stock shares withheld or sold related to tax obligations			100,000
American Airlines, Inc. [Member]
Bankruptcy Settlement Obligations [Line Items]
Single-dip equity obligations	$ 135,000,000	248,000,000			$ 2,500,000,000
Shares issued per $1,000 in reduction of allowed claims	30.7553
Allowed claims including tax liabilities	$ 1,000
Labor-related deemed claim		1,500,000,000
Labor-related deemed claim	$ 42,000,000	$ 77,000,000
Shares released from restriction and issued			600,000	800,000
Common stock shares withheld or sold related to tax obligations			100,000