Investments - Additional Information (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2023 USD ($) aircraft engine equipment	Mar. 31, 2022 USD ($) equipment	Dec. 31, 2022 USD ($)
Equipment held for operating lease
Schedule of Equity Method Investments [Line Items]
Net book value	$ 2,141,839		$ 2,111,935
WMES
Schedule of Equity Method Investments [Line Items]
Ownership interest	50.00%
Number of engines in lease portfolio | engine	34
Number of aircraft in lease portfolio | aircraft	5
Proceeds from sale of assets	$ 22,300
WMES | Other Income | Asset Management
Schedule of Equity Method Investments [Line Items]
Other sales and revenue	500	$ 500
WMES | Aircraft
Schedule of Equity Method Investments [Line Items]
Net book value	$ 227,500
CASC Willis
Schedule of Equity Method Investments [Line Items]
Ownership interest	50.00%
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	$ 42,900
WMES and CASC Willis
Schedule of Equity Method Investments [Line Items]
Number of assets sold | equipment	0	0