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Corporate information - Additional Information (Detail)
 1 Months Ended 12 Months Ended
Mar. 31, 2022
T
May 31, 2021
Dec. 31, 2023
destination
airline
Dec. 31, 2023
destination
airline
flight
Dec. 31, 2023
destination
airline
Dec. 31, 2023
destination
airline
Country
Dec. 31, 2023
destination
airline
aircraft
Parent company information [line items]              
Number of operated aircrafts       375     106
Number of airline destinations | destination         82    
Number of airline destination countries | Country           32  
Number of international airline destinations (more than) | destination         180    
Commercial alliance renewed   five years          
Aircraft useful life     9 years 8 months 12 days        
Boeing 737-800              
Parent company information [line items]              
Number of operated aircrafts             67
Boeing 737-700              
Parent company information [line items]              
Number of operated aircrafts             9
Boeing 737-800 BCF              
Parent company information [line items]              
Number of operated aircrafts             1
Capacity per aircraft | T 21.70            
Boeing 737-MAX              
Parent company information [line items]              
Number of operated aircrafts             29
ConnectMiles | Star Alliance Airlines              
Parent company information [line items]              
Number of destinations | destination     1,200 1,200 1,200 1,200 1,200
ConnectMiles | Star Alliance Airlines | Bottom of range              
Parent company information [line items]              
Number of airlines | airline     26 26 26 26 26