Equipment Held for Operating Lease - Narrative (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2021 USD ($) region	Dec. 31, 2021 engine	Dec. 31, 2021 aircraft.	Dec. 31, 2021 marineVessel	Dec. 31, 2020 USD ($)	Dec. 31, 2020 engine	Dec. 31, 2020 aircraft.	Dec. 31, 2020 marineVessel
Leases [Abstract]
Net book value of equipment held for operating lease	$ 1,991,368				$ 1,886,613
Net investment in lease, notes receivable	$ 115,500				$ 158,700
Number of equipment pieces held for lease		304	12	1		291	8	1
Number of geographic regions in which aircraft lessees are domiciled in | region	7