v3.26.1
Share Capital - Narrative (Details) - USD ($)
$ / shares in Units, shares in Millions, $ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 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     $ 205.7    
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) 0.0 1.9 0.0 3.4  
Open Market Repurchases          
Class of Stock [Line Items]          
Remaining share repurchase authorization $ 136.7   $ 136.7