Debt - Additional Information (Detail) |
12 Months Ended |
---|---|
Dec. 31, 2017
Aircraft
Transactions
| |
Debt Instrument [Line Items] | |
Number of jet aircraft committed to capital leases | Aircraft | 33 |
Collateral coverage tests, number of financing transactions | Transactions | 4 |
American Airlines, Inc. [Member] | |
Debt Instrument [Line Items] | |
Number of jet aircraft committed to capital leases | Aircraft | 33 |
Collateral coverage tests, number of financing transactions | Transactions | 4 |