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Performance B.4.1. Share-based compensation, additional information (Details)
$ / shares in Units, $ in Thousands
12 Months Ended
Dec. 31, 2024
USD ($)
metric
plan
$ / shares
Dec. 31, 2023
USD ($)
Dec. 31, 2019
Disclosure of terms and conditions of share-based payment arrangement [line items]      
Number of plans | plan 2    
Deferred share plans      
Disclosure of terms and conditions of share-based payment arrangement [line items]      
Vesting period     3 years
Performance Share Plan      
Disclosure of terms and conditions of share-based payment arrangement [line items]      
Vesting period 3 years    
Cumulative achievement for cumulative targets, period 3 years    
Number of environmental, social and governance metrics | metric 5    
Performance Share Plan (Relative TSR) | Relative TSR      
Disclosure of terms and conditions of share-based payment arrangement [line items]      
Number of trading days 10 days    
Performance share plan 2024 (SAR) | Relative TSR      
Disclosure of terms and conditions of share-based payment arrangement [line items]      
Share-based payment arrangements, stock appreciation rights, performance conditions percent 60.00%    
Share-based payment arrangements, restricted stock units, performance conditions percent 30.00%    
Share-based payment arrangements, environmental social and governance, performance conditions percent 10.00%    
Measurement period 7 years    
Performance Share Plan 2023 (Relative TSR) | Relative TSR      
Disclosure of terms and conditions of share-based payment arrangement [line items]      
Share-based payment arrangements, environmental social and governance, performance conditions percent 10.00%    
Operating cash flow after leases performance conditions percent 50.00%    
Service revenue performance conditions percent 30.00%    
Share-based payment arrangements, relative total shareholder return, performance conditions percent (in percentage) 10.00%    
Performance Share Plan 2022 (Relative TSR) | Relative TSR      
Disclosure of terms and conditions of share-based payment arrangement [line items]      
Operating cash flow after leases performance conditions percent 50.00%    
Service revenue performance conditions percent 30.00%    
Share-based payment arrangements, relative total shareholder return, performance conditions percent (in percentage) 20.00%    
Performance Share Plan 2021 (Relative TSR) | Relative TSR      
Disclosure of terms and conditions of share-based payment arrangement [line items]      
Share-based payment arrangements, restricted stock units, performance conditions percent 35.00%    
Operating cash flow after leases performance conditions percent 30.00%    
Service revenue performance conditions percent 15.00%    
Share-based payment arrangements, relative total shareholder return, performance conditions percent (in percentage) 20.00%    
Performance Share Plan 2021 (Relative TSR) | Market Stock Units (MSU) | Executive Officer      
Disclosure of terms and conditions of share-based payment arrangement [line items]      
Target share price (in dollars per share) | $ / shares $ 30.75    
Payment threshold of target award value 150.00%    
Financial liabilities, at fair value $ 0 $ 1,000  
Loss on financial liabilities at fair value through profit or loss $ 600 1,000  
Tranche one | Deferred share plans      
Disclosure of terms and conditions of share-based payment arrangement [line items]      
Vesting percentage     30.00%
Tranche two | Deferred share plans      
Disclosure of terms and conditions of share-based payment arrangement [line items]      
Vesting percentage     30.00%
Tranche three | Deferred share plans      
Disclosure of terms and conditions of share-based payment arrangement [line items]      
Vesting percentage     40.00%
Tranche 2022 | Performance Share Plan 2021 (Relative TSR) | Market Stock Units (MSU) | Executive Officer      
Disclosure of terms and conditions of share-based payment arrangement [line items]      
Share price at inception (in dollars per share) | $ / shares $ 33.83    
Share price appreciation percent 10.00%    
Value determination, trading day average share price period 30 days    
Cash payments   $ 1,150  
Tranche 2023 | Performance Share Plan 2021 (Relative TSR) | Market Stock Units (MSU) | Executive Officer      
Disclosure of terms and conditions of share-based payment arrangement [line items]      
Share price at inception (in dollars per share) | $ / shares $ 36.90    
Share price appreciation percent 20.00%    
Value determination, trading day average share price period 30 days    
Cash payments $ 1,740