Equipment Held for Operating Lease - Leased Assets (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Lessor, Lease, Description [Line Items]
Net book value of equipment held for operating lease	$ 1,650,918	$ 1,673,135
Off-lease and other
Lessor, Lease, Description [Line Items]
Net book value of equipment held for operating lease	214,584	202,143
Europe
Lessor, Lease, Description [Line Items]
Net book value of equipment held for operating lease	554,529	624,913
Asia
Lessor, Lease, Description [Line Items]
Net book value of equipment held for operating lease	427,246	368,690
United States
Lessor, Lease, Description [Line Items]
Net book value of equipment held for operating lease	240,454	260,095
South America
Lessor, Lease, Description [Line Items]
Net book value of equipment held for operating lease	110,563	118,508
Mexico
Lessor, Lease, Description [Line Items]
Net book value of equipment held for operating lease	51,573	33,795
Middle East
Lessor, Lease, Description [Line Items]
Net book value of equipment held for operating lease	26,732	43,602
Canada
Lessor, Lease, Description [Line Items]
Net book value of equipment held for operating lease	22,640	18,792
Africa
Lessor, Lease, Description [Line Items]
Net book value of equipment held for operating lease	2,597	$ 2,597
Month-to-month leases
Lessor, Lease, Description [Line Items]
Net book value of equipment held for operating lease	196,143
Leases expiring 2020
Lessor, Lease, Description [Line Items]
Net book value of equipment held for operating lease	549,244
Leases expiring 2021
Lessor, Lease, Description [Line Items]
Net book value of equipment held for operating lease	131,217
Leases expiring 2022
Lessor, Lease, Description [Line Items]
Net book value of equipment held for operating lease	323,383
Leases expiring 2023
Lessor, Lease, Description [Line Items]
Net book value of equipment held for operating lease	97,613
Leases expiring 2024
Lessor, Lease, Description [Line Items]
Net book value of equipment held for operating lease	70,507
Leases expiring thereafter
Lessor, Lease, Description [Line Items]
Net book value of equipment held for operating lease	$ 68,227