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Accrued maintenance liability (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Accrued Maintenance [Roll Forward]      
Accrued maintenance liability at beginning of period $ 2,900,651 $ 1,750,395  
Maintenance payments received 779,824 448,516  
Maintenance payments returned (245,294) (209,087)  
Release to income other than upon sale (a) (770,492) (273,146)  
Lessor contribution, top ups and other (a) (89,819) (30,456)  
Accrued maintenance liability at end of period 2,503,202 2,900,651 $ 1,750,395
Non-cash Investing and Financing Activities      
Accrued Maintenance [Roll Forward]      
Release to income upon sale (71,668) (20,428) $ (95,000)
GE Capital Aviation Services      
Accrued Maintenance [Roll Forward]      
GECAS Transaction $ 0 $ 1,234,857