Risk Management - Additional Information (Detail) $ in Billions	Dec. 31, 2015 USD ($)
Derivative [Line Items]
Principal amount of long-term variable rate debt	$ 7.8
Weighted average effective interest rate on variable rate debt	2.93%
American Airlines, Inc. [Member]
Derivative [Line Items]
Principal amount of long-term variable rate debt	$ 7.8
Weighted average effective interest rate on variable rate debt	2.93%