Investments - Additional Information (Details) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2024 USD ($)	Jun. 30, 2023 USD ($)	Jun. 30, 2024 USD ($) aircraft engine	Jun. 30, 2023 USD ($) engine	Dec. 31, 2023 USD ($)
Equipment Held For Operating Lease
Schedule of Equity Method Investments [Line Items]
Net book value	$ 2,317,903		$ 2,317,903		$ 2,112,837
WMES
Schedule of Equity Method Investments [Line Items]
Ownership interest	50.00%		50.00%
Number of engines in lease portfolio | engine			47
Number of aircraft in lease portfolio | aircraft			1
Number of assets sold | engine			3	1
Proceeds from sale of assets			$ 44,700	$ 15,500
Purchases from related party				22,300
WMES | Other Income | Asset Management
Schedule of Equity Method Investments [Line Items]
Other sales and revenue	$ 1,300	$ 600	2,700	$ 1,100
WMES | Equipment Held For Operating Lease
Schedule of Equity Method Investments [Line Items]
Net book value	299,600		$ 299,600
CASC Willis
Schedule of Equity Method Investments [Line Items]
Number of engines in lease portfolio | engine			4
CASC Willis | Equipment Held For Operating Lease
Schedule of Equity Method Investments [Line Items]
Net book value	$ 38,600		$ 38,600