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Capital and reserves - Share-Based Payment Arrangements (Details)
1 Months Ended
Jan. 27, 2021
Instruments
$ / shares
Jun. 30, 2018
Instruments
Aug. 31, 2022
Instruments
May 31, 2022
Instruments
Mar. 31, 2022
Instruments
Dec. 31, 2021
shares
Disclosure of terms and conditions of share-based payment arrangement [line items]            
Number of shares issued upon exercise | shares           167,500
Vesting percentage 25.00%          
2018 Grant            
Disclosure of terms and conditions of share-based payment arrangement [line items]            
Number of instruments   4,990,000        
Contractual life   6 years        
2018 Grant | Vesting period 1            
Disclosure of terms and conditions of share-based payment arrangement [line items]            
Vesting percentage   50.00%        
Vesting term   2 years        
2018 Grant | Vesting period 2            
Disclosure of terms and conditions of share-based payment arrangement [line items]            
Vesting percentage   25.00%        
Vesting term   3 years        
2018 Grant | Vesting period 3            
Disclosure of terms and conditions of share-based payment arrangement [line items]            
Vesting percentage   25.00%        
Vesting term   4 years        
2021 Grant            
Disclosure of terms and conditions of share-based payment arrangement [line items]            
Par value | $ / shares $ 15          
Number of instruments 546,822          
Contractual life 5 years          
2021 Grant | Vesting period 1            
Disclosure of terms and conditions of share-based payment arrangement [line items]            
Vesting percentage 25.00%          
2021 Grant | Vesting period 2            
Disclosure of terms and conditions of share-based payment arrangement [line items]            
Vesting percentage 25.00%          
2021 Grant | Vesting period 3            
Disclosure of terms and conditions of share-based payment arrangement [line items]            
Vesting percentage 25.00%          
2021 Grant | Vesting period 4            
Disclosure of terms and conditions of share-based payment arrangement [line items]            
Vesting percentage 25.00%          
2022 Grant            
Disclosure of terms and conditions of share-based payment arrangement [line items]            
Number of instruments     107,110 490,662 1,727,443  
Vesting percentage     25.00% 25.00% 25.00%  
Contractual life     5 years 5 years 5 years