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Investments - Additional Information (Details)
$ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2024
USD ($)
Sep. 30, 2023
USD ($)
Sep. 30, 2024
USD ($)
engine
Sep. 30, 2023
USD ($)
engine
Dec. 31, 2023
USD ($)
WMES          
Schedule of Equity Method Investments [Line Items]          
Number of assets purchased | engine       1  
Equipment Held For Operating Lease          
Schedule of Equity Method Investments [Line Items]          
Net book value $ 2,435,583   $ 2,435,583   $ 2,112,837
WMES          
Schedule of Equity Method Investments [Line Items]          
Ownership interest 50.00%   50.00%    
Number of engines in lease portfolio | engine     49    
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 $ 1,200 $ 800 4,000 $ 1,900  
WMES | Equipment Held For Operating Lease          
Schedule of Equity Method Investments [Line Items]          
Net book value 335,500   $ 335,500    
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 $ 38,700   $ 38,700