Annual and transition report of foreign private issuers pursuant to Section 13 or 15(d)

Commitments and contingencies (Unrecorded contractual commitments for purchase of flight equipment) (Details)

v3.8.0.1
Commitments and contingencies (Unrecorded contractual commitments for purchase of flight equipment) (Details) - Flight Equipment [Member] - Capital Addition Purchase Commitments [Member]
$ in Thousands
12 Months Ended
Dec. 31, 2017
USD ($)
aircraft
Unrecorded Unconditional Purchase Obligation [Line Items]  
2018 $ 6,065,084 [1]
2019 5,723,097 [1]
2020 4,742,181 [1]
2021 3,714,523 [1]
2022 2,405,676 [1]
Thereafter 1,662,286 [1]
Total $ 24,312,847
Unrecorded number of forward orders | aircraft 426
Unrecorded number of purchase-leaseback transactions | aircraft 12
[1] Includes commitments to purchase 426 aircraft and 12 purchase and leaseback transactions.