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Investments - Additional Information (Details)
$ in Thousands
 12 Months Ended
Dec. 31, 2024
USD ($)
engine
Dec. 31, 2023
USD ($)
engine
Schedule of Equity Method Investments [Line Items]    
Currency translation adjustment $ (414) $ (523)
ROU assets 6,584 8,652
Total lease liabilities 5,848 7,941
WMES    
Schedule of Equity Method Investments [Line Items]    
Proceeds from sale of assets $ 50,500 $ 28,800
Number of assets sold | engine 4 2
Equipment Held For Operating Lease    
Schedule of Equity Method Investments [Line Items]    
Net book value $ 2,635,910 $ 2,112,837
WMES    
Schedule of Equity Method Investments [Line Items]    
Ownership interest 50.00%  
Number of engines in lease portfolio | engine 50  
Currency translation adjustment $ 2,100 $ 1,800
Number of assets purchased | engine   1
Costs and expenses, related party   $ 22,300
ROU assets 1,600 3,300
Total lease liabilities 1,600 3,300
WMES | Other Revenue | Asset Management    
Schedule of Equity Method Investments [Line Items]    
Management fees earned 4,800 $ 2,400
WMES | Equipment Held For Operating Lease    
Schedule of Equity Method Investments [Line Items]    
Net book value $ 328,900  
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 $ 37,300