v3.25.4
Capital structure - Authorized Capital (Details)
Dec. 31, 2025
$ / shares
shares
Dec. 31, 2025
$ / shares
shares
Dec. 31, 2025
£ / shares
shares
Dec. 31, 2024
$ / shares
shares
Class of Stock [Line Items]        
Common shares, par value (in BMD per share) | $ / shares $ 0.01     $ 0.01
Preference shares, par value (in dollars per share or pounds per share) | (per share) $ 0.01   £ 0.01  
US dollars        
Class of Stock [Line Items]        
Preferred shares, authorized (in shares) | shares 110,200,001 110,200,001 110,200,001  
United Kingdom pounds        
Class of Stock [Line Items]        
Preferred shares, authorized (in shares) | shares 50,000,000 50,000,000 50,000,000  
Common Stock Issued and Common Stock Authorized but Unissued        
Class of Stock [Line Items]        
Common shares, par value (in BMD per share) | $ / shares   $ 0.01    
Voting Common Stock        
Class of Stock [Line Items]        
Common shares, par value (in BMD per share) | $ / shares   $ 0.01    
Common shares, authorized (in shares) | shares 2,000,000,000 2,000,000,000 2,000,000,000 2,000,000,000
Non-voting Common Stock        
Class of Stock [Line Items]        
Common shares, par value (in BMD per share) | $ / shares   $ 0.01    
Common shares, authorized (in shares) | shares 6,000,000,000 6,000,000,000 6,000,000,000 6,000,000,000