v3.26.1
Related Party Transactions (Details)
 3 Months Ended 6 Months Ended
Jun. 30, 2026
USD ($)
engine
Jun. 30, 2025
USD ($)
Jun. 30, 2026
USD ($)
engine
lease
Jun. 30, 2025
USD ($)
Jun. 30, 2025
engine
Jun. 30, 2025
airframe
Dec. 31, 2025
USD ($)
Related Party Transaction [Line Items]              
Management and advisory fees $ 5,524,000 $ 2,588,000 $ 13,419,000 $ 4,551,000      
Technical expense 9,947,000 7,508,000 19,635,000 13,738,000      
Payment for fleet management services     1,400,000        
Management and advisory fee income 2,800,000   7,700,000        
Due from affiliates 3,188,000   3,188,000       $ 0
Due to affiliates 1,407,000   1,407,000       $ 0
Willis Mitsui And Company Engine Support Limited              
Related Party Transaction [Line Items]              
Management and advisory fees $ 2,000,000.0 1,800,000 $ 3,900,000 3,000,000.0      
Number of assets purchased | engine     0        
Purchases from related party       7,200,000      
Lessee, operating lease, number of engines subleased | engine 2   2        
Number of leases renewed | lease     1        
Technical expense $ 700,000 700,000 $ 1,400,000 1,300,000      
Contributions     $ 29,500,000        
Willis Mitsui And Company Engine Support Limited | Transaction One              
Related Party Transaction [Line Items]              
Number of assets sold     5   3 1  
Proceeds from sale of assets     $ 55,300,000 32,200,000      
Gain on sale of asset     15,300,000 1,600,000      
Willis Mitsui And Company Engine Support Limited | Transaction Two              
Related Party Transaction [Line Items]              
Number of assets sold | engine         1    
Proceeds from sale of assets       21,100,000      
Gain on sale of asset       1,400,000      
China Aviation Supplies Import & Export Corporation Willis Lease Company Limited              
Related Party Transaction [Line Items]              
Management and advisory fees $ 200,000 $ 0 $ 200,000 0      
CASC Willis Engine Lease Company Limited              
Related Party Transaction [Line Items]              
Number of assets sold | engine     0   1    
Proceeds from sale of assets       6,100,000      
Gain on sale of asset       $ 0      
Willis Aviation Lending Warehouse I LLC              
Related Party Transaction [Line Items]              
Number of assets sold | engine     12        
Proceeds from sale of assets     $ 104,000,000.0        
Gain on sale of asset     $ 600,000        
Blackstone Credit And Insurance              
Related Party Transaction [Line Items]              
Number of assets sold | engine     14        
Proceeds from sale of assets     $ 216,200,000        
Gain on sale of asset     $ 33,300,000