v3.26.3
Share Capital - Narrative (Details) - USD ($)
$ / shares in Units, shares in Millions, $ in Millions
 3 Months Ended 9 Months Ended
Sep. 30, 2026
Sep. 30, 2025
Sep. 30, 2026
Sep. 30, 2025
Nov. 04, 2025
Class of Stock [Line Items]          
Share repurchase authorization         $ 150.0
Special cash dividend, amount per outstanding common share (in dollars per share)     $ 2.00    
Dividends declared     $ 205.8    
Percent of combined voting power, Class A and Class B 9.50%   9.50%    
Common Class C          
Class of Stock [Line Items]          
Share class conversions (in shares) 0.5 0.0 0.5 3.4  
Open Market Repurchases          
Class of Stock [Line Items]          
Remaining share repurchase authorization $ 133.6   $ 133.6