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Property and equipment - Additional Information (Detail)
$ in Thousands
 1 Months Ended 12 Months Ended
Dec. 31, 2023
USD ($)
aircraft
Dec. 31, 2021
USD ($)
Mar. 31, 2022
T
Aug. 31, 2020
USD ($)
aircraft
Dec. 31, 2023
USD ($)
aircraft
Dec. 31, 2022
USD ($)
aircraft
Dec. 31, 2021
USD ($)
spareEngine
aircraft
Sep. 26, 2022
aircraft
Disclosure of detailed information about property, plant and equipment [line items]                
Average lease term         13 years      
Asset recognized from insurance reimbursement $ 11,500              
Capitalized expenditure improvements during the year         $ 600      
Net profit         $ 514,097 $ 348,054 $ 43,844  
Reversal of impairment loss           5,400    
Training Center                
Disclosure of detailed information about property, plant and equipment [line items]                
Capitalized expenditure improvements during the year           $ 5,200    
B-737-Max                
Disclosure of detailed information about property, plant and equipment [line items]                
Number of aircraft capitalized | aircraft 8       8 3    
Average lease term           12 years    
Boeing 737-800 BCF                
Disclosure of detailed information about property, plant and equipment [line items]                
Capacity per aircraft | T     21.70          
B-737-800                
Disclosure of detailed information about property, plant and equipment [line items]                
Number of aircrafts damaged | aircraft               1
B-737-700                
Disclosure of detailed information about property, plant and equipment [line items]                
Impairment loss       $ 191,200        
Number of aircraft sold | aircraft             3  
Number of aircraft parts sold | spareEngine             4  
Net profit   $ 0            
Number of aircrafts approved to sell | aircraft       14        
Number of aircrafts previously approved for sale, subsequently retained | aircraft           11    
Number of aircrafts sold | aircraft           2    
Aircraft                
Disclosure of detailed information about property, plant and equipment [line items]                
Carrying value pledged as collateral obligation $ 1,500,000       $ 1,500,000 $ 1,500,000    
Additions purchase deposits         200,200 383,200    
Additions for advance payments contracts         $ 200,000 $ 377,700    
Aircraft | Boeing 737-800 BCF                
Disclosure of detailed information about property, plant and equipment [line items]                
Useful life of aircraft     10 years          
Aircraft | B-737-700                
Disclosure of detailed information about property, plant and equipment [line items]                
Useful life of aircraft           3 years