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Common shares - Securities repurchase programs (Details) - USD ($)
$ / shares in Units, $ in Thousands
 1 Months Ended 2 Months Ended 3 Months Ended 5 Months Ended 10 Months Ended 12 Months Ended
May 31, 2023
Dec. 31, 2022
Aug. 31, 2022
Jul. 31, 2022
May 31, 2022
Feb. 15, 2023
Apr. 30, 2023
Nov. 09, 2023
Oct. 31, 2022
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
May 01, 2023
Apr. 30, 2021
May 31, 2018
Disclosure of classes of share capital [line items]                              
Purchase of treasury shares                   $ 489,680 $ 161,373        
Repurchase / repayment of convertible notes                   $ 0 $ (83,968) $ 0      
Number of shares authorized (in shares)   61,262,838               53,107,765 61,262,838        
Entei, Inc. | Other related parties                              
Disclosure of classes of share capital [line items]                              
Entity's shares acquired (in shares)     1,293,661                        
Shares repurchased, average purchase price (in dollars per share)     $ 38.65                        
Convertible Senior Notes Due 2022                              
Disclosure of classes of share capital [line items]                              
Aggregate principal amount notes issued                           $ 81,500 $ 203,500
Convertible Senior Notes Due 2025                              
Disclosure of classes of share capital [line items]                              
Aggregate principal amount notes issued                           $ 81,500  
Repurchase / repayment of convertible notes         $ 14,300                    
Gain (loss) on repurchase of convertible notes                   $ 500          
Common stock and Preference shares                              
Disclosure of classes of share capital [line items]                              
Number of shares authorized (in shares)                   175,000,000          
Common stock                              
Disclosure of classes of share capital [line items]                              
Number of shares authorized (in shares)   150,000,000               150,000,000 150,000,000        
Par value per share (in dollars per share)   $ 0.01               $ 0.01 $ 0.01        
Number of shares outstanding (in shares)   61,262,838               53,107,765 61,262,838        
Preference shares                              
Disclosure of classes of share capital [line items]                              
Number of shares authorized (in shares)                   25,000,000          
Par value per share (in dollars per share)                   $ 0.01          
2020 Securities Repurchase Program | Entei, Inc. | Other related parties                              
Disclosure of classes of share capital [line items]                              
Entity's shares acquired (in shares)     1,293,661                        
Shares repurchased, average purchase price (in dollars per share)     $ 38.65                        
2020 Securities Repurchase Program | Convertible Senior Notes Due 2025                              
Disclosure of classes of share capital [line items]                              
Notional amount repurchased       $ 1,500 10,800                    
Repayments of bonds, notes and debentures       $ 1,700 $ 12,600                    
2020 Securities Repurchase Program | Common stock                              
Disclosure of classes of share capital [line items]                              
Entity's shares acquired (in shares)                 3,120,341            
Common stock, par value (in dollars per share)                 $ 38.66            
Shares repurchased on the open market (in shares)                 1,826,680            
Average share price purchased on the open market (dollars per share)                 $ 38.66            
2022 Securities Repurchase Program | Common stock                              
Disclosure of classes of share capital [line items]                              
Authorized amount of share repurchase                 $ 250,000            
Entity's shares acquired (in shares)   789,532       1,891,303   2,646,219              
Common stock, par value (in dollars per share)   $ 51.61       $ 50.27   $ 47.25              
2023 Securities Repurchase Program | Common stock                              
Disclosure of classes of share capital [line items]                              
Authorized amount of share repurchase           $ 250,000             $ 250,000    
Entity's shares acquired (in shares) 3,699,336           1,723,465                
Common stock, par value (in dollars per share) $ 47.54           $ 54.37                
Stock buyback program, remaining authorized amount                   $ 250,000          
Additional amount authorized for purchase of treasury shares 250,000,000             250,000,000