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Share-based compensation - Narrative (Details) - yr
3 Months Ended 12 Months Ended
Dec. 31, 2022
Dec. 31, 2024
Dec. 31, 2021
Disclosure of terms and conditions of share-based payment arrangement [line items]      
Average expected fluctuation in expense recognition 10.00%    
LTIP 2021 | RSUs | First anniversary of granting date      
Disclosure of terms and conditions of share-based payment arrangement [line items]      
Vesting percentage   34.00%  
LTIP 2021 | RSUs | First anniversary of granting date | Executive board      
Disclosure of terms and conditions of share-based payment arrangement [line items]      
Vesting percentage   33.30%  
LTIP 2021 | RSUs | Each quarter following the 1st anniversary of granting date      
Disclosure of terms and conditions of share-based payment arrangement [line items]      
Vesting percentage   8.25%  
LTIP 2021 | RSUs | Granting date | Executive board      
Disclosure of terms and conditions of share-based payment arrangement [line items]      
Vesting percentage   33.30%  
LTIP 2021 | RSUs | Second anniversary of granting date | Executive board      
Disclosure of terms and conditions of share-based payment arrangement [line items]      
Vesting percentage   33.30%  
LTIP 2021 | PSUs      
Disclosure of terms and conditions of share-based payment arrangement [line items]      
Vesting requirements anniversary of grant date options may be exercised   3  
LTIP 2021 | PSUs | Performance cycle 1      
Disclosure of terms and conditions of share-based payment arrangement [line items]      
Vesting period   24 months  
Vesting requirements for share-based payment arrangement, performance cycle   2 years  
LTIP 2021 | PSUs | Performance cycle 1 | Executive board      
Disclosure of terms and conditions of share-based payment arrangement [line items]      
Vesting requirements for share-based payment arrangement, performance cycle   2 years  
LTIP 2021 | PSUs | Performance cycle 2      
Disclosure of terms and conditions of share-based payment arrangement [line items]      
Vesting period   36 months  
Vesting requirements for share-based payment arrangement, performance cycle   3 years  
LTIP 2021 | PSUs | Performance cycle 2 | Executive board      
Disclosure of terms and conditions of share-based payment arrangement [line items]      
Vesting requirements for share-based payment arrangement, performance cycle   3 years  
Service, license, and investment agreement (SLIA) 2019 | RSUs      
Disclosure of terms and conditions of share-based payment arrangement [line items]      
Vesting period     6 months
LTIP 2020 | RSUs      
Disclosure of terms and conditions of share-based payment arrangement [line items]      
Vesting requirements anniversary of grant date options may be exercised   7