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Flight equipment held for operating leases, net (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Movement in Property Subject to or Available for Operating Lease [Roll Forward]      
Net book value at beginning of period $ 31,501,973 $ 32,219,494  
Additions 5,276,715 3,863,905  
Depreciation (1,690,753) (1,753,574)  
Impairment (Note 24) (54,331) (78,335) $ (16,322)
AeroTurbine restructuring (Note 25) (2,662) (15,392)  
Disposals and transfers (to) from held for sale (2,281,401) (2,222,432)  
Transfers (to) from net investment in finance and sales-type leases/inventory (352,714) (511,693)  
Net book value at end of period 32,396,827 31,501,973 $ 32,219,494
Accumulated depreciation as of December 31, 2017 and 2016, respectively $ (6,067,084) $ (5,086,611)