Risk Management - Additional Information (Detail) $ in Billions |
Dec. 31, 2017
USD ($)
|
---|---|
Debt Instrument [Line Items] | |
Principal amount of long-term variable rate debt | $ 9.6 |
Variable Rate Debt [Member] | |
Debt Instrument [Line Items] | |
Weighted average effective interest rate on variable rate debt | 3.40% |
American Airlines, Inc. [Member] | |
Debt Instrument [Line Items] | |
Principal amount of long-term variable rate debt | $ 9.6 |
American Airlines, Inc. [Member] | Variable Rate Debt [Member] | |
Debt Instrument [Line Items] | |
Weighted average effective interest rate on variable rate debt | 3.40% |