v3.25.3
Share-Based Compensation (Narrative) (Details) - USD ($)
$ / shares in Units, $ in Millions
3 Months Ended 9 Months Ended
Sep. 30, 2025
Sep. 30, 2024
Sep. 30, 2025
Sep. 30, 2024
Share based compensation expense $ 20.3 $ 20.9 $ 68.3 $ 65.1
Share based compensation expense, net of tax 15.4 15.8 $ 51.8 49.3
Percentage Of Awards Applied To Performance Condition     50.00%  
Percentage of Awards Applied to Market Condition     50.00%  
Stock options and Restricted Stock Units (RSUs) [Member]        
Vesting period, in years     3 years  
Share-based Payment Arrangement, Option [Member]        
Share based compensation expense $ 4.9 $ 4.5 $ 15.6 $ 13.4
Restricted Stock [Member]        
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Net of Forfeitures     102,607 100,199
Weighted average fair value per award, in dollars per share     $ 360.00 $ 276.87
Share-based Payment Arrangement, Option [Member]        
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Net of Forfeitures     241,763 249,579
Weighted average fair value per award, in dollars per share     $ 98.12 $ 76.85
Phantom Share Units (PSUs) [Member]        
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Net of Forfeitures     134,896 161,782
Weighted average fair value per award, in dollars per share     $ 374.33 $ 332.65