v3.25.2
Common Shares - Narrative (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2025
Mar. 31, 2025
Jun. 30, 2024
Mar. 31, 2024
Jun. 30, 2025
Jun. 30, 2024
Dec. 31, 2024
Jan. 31, 2023
Class of Stock [Line Items]                
Share lending arrangement, shares outstanding (in shares) 2,208,734   12,081,900   2,208,734 12,081,900 10,860,689  
Share options exercised in period (in shares)         0 411,336    
Common shares                
Class of Stock [Line Items]                
Shares cancelled (in shares)         19,680,391      
Movement in treasury shares (in shares) (3,083,690) (5,568,265) (2,364,437) 3,067 8,651,955      
Share based compensation (in shares)       411,336   411,336    
Convertible Bonds                
Class of Stock [Line Items]                
Share lending arrangement, shares authorized (in shares) 25,000,000       25,000,000      
Share lending arrangement, shares issued (in shares) 0       0      
Gross deferred finance charge, share lending arrangement $ 6.5       $ 6.5     $ 12.4
Deferred finance charge, share lending arrangement, amortization 0.6   $ 0.6   1.2 $ 1.2    
Convertible Bonds | Short-term debt                
Class of Stock [Line Items]                
Gross deferred finance charge, share lending arrangement 2.5       2.5   $ 2.5  
Convertible Bonds | Long-term debt                
Class of Stock [Line Items]                
Gross deferred finance charge, share lending arrangement $ 4.0       $ 4.0   $ 5.2