Investments - Additional Information (Details) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2025 USD ($) engine	Jun. 30, 2024 USD ($) engine	Jun. 30, 2025 USD ($) engine	Jun. 30, 2025 USD ($) engine	Jun. 30, 2025 USD ($) aircraft engine	Jun. 30, 2025 USD ($) engine	Jun. 30, 2025 USD ($) engine airframe	Jun. 30, 2024 USD ($) engine	Dec. 31, 2024 USD ($)
Schedule of Equity Method Investments [Line Items]
Gain on sale of business	$ 42,950	$ 0	$ 42,950					$ 0
Equipment Held For Operating Lease
Schedule of Equity Method Investments [Line Items]
Net book value	$ 2,606,593		$ 2,606,593	$ 2,606,593	$ 2,606,593	$ 2,606,593	$ 2,606,593		$ 2,635,910
WMES
Schedule of Equity Method Investments [Line Items]
Ownership interest	50.00%		50.00%	50.00%	50.00%	50.00%	50.00%
Number of engines in lease portfolio | engine				52
Number of aircrafts in lease portfolio | aircraft					2
Number of assets sold | engine								3
Proceeds from sale of assets								$ 44,700
Gain on sale of asset								$ 12,000
Purchases from related party			$ 7,200
Lessee, operating lease, number of engines subleased | engine	2	1	2	2	2	2	2	1
ROU assets	$ 1,500	$ 2,500	$ 1,500	$ 1,500	$ 1,500	$ 1,500	$ 1,500	$ 2,500
Lease liability	1,400	2,500	1,400	$ 1,400	1,400	1,400	$ 1,400	2,500
WMES | Transaction Two
Schedule of Equity Method Investments [Line Items]
Number of assets sold | engine				1
Proceeds from sale of assets			21,100
Gain on sale of asset			1,400
WMES | Transaction One
Schedule of Equity Method Investments [Line Items]
Number of assets sold				3			1
Proceeds from sale of assets			32,200
Gain on sale of asset			1,600
WMES | Other Income | Asset Management
Schedule of Equity Method Investments [Line Items]
Other sales and revenue	1,800	$ 1,300	3,000					$ 2,700
WMES | Equipment Held For Operating Lease
Schedule of Equity Method Investments [Line Items]
Net book value	380,800		380,800	$ 380,800	380,800	380,800	$ 380,800
CASC Willis
Schedule of Equity Method Investments [Line Items]
Number of engines in lease portfolio | engine				5
Number of assets sold | engine				1
Proceeds from sale of assets			6,100
Gain on sale of asset			0
CASC Willis | Equipment Held For Operating Lease
Schedule of Equity Method Investments [Line Items]
Net book value	$ 43,300		$ 43,300	$ 43,300	$ 43,300	$ 43,300	$ 43,300
WGET
Schedule of Equity Method Investments [Line Items]
Ownership interest	70.00%		70.00%	70.00%	70.00%	70.00%	70.00%
Contributions			$ 1,600
Percentage of cost of the land						70.00%
Committed amount			$ 15,100
WGET | Global Engine Maintenance
Schedule of Equity Method Investments [Line Items]
Ownership interest	30.00%		30.00%	30.00%	30.00%	30.00%	30.00%
WAML
Schedule of Equity Method Investments [Line Items]
Total purchase price			$ 45,000
Gain on sale of business			$ 43,000