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Share based compensation - VRS 2021 Narrative (Details) - USD ($)
12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Disclosure of terms and conditions of share-based payment arrangement [line items]      
Total share-based payment expense recognized $ 8,200,000 $ 34,500,000 $ 24,700,000
2021 VRSUP      
Disclosure of terms and conditions of share-based payment arrangement [line items]      
Number of trading days regarding cash payments to be received 5 days    
Fair value, RSUs $ 2.17    
Total share-based payment expense recognized 9,800,000 $ 20,500,000  
Cash Settled Restricted Stock Units 2021      
Disclosure of terms and conditions of share-based payment arrangement [line items]      
Fair value, RSUs 1.61    
Equity Settled Restricted Stock Units 2021      
Disclosure of terms and conditions of share-based payment arrangement [line items]      
Fair value, RSUs $ 4.93