v3.25.2
Share-Based Compensation (Narrative) (Details) - USD ($)
$ / shares in Units, $ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Jun. 30, 2025
Jun. 30, 2024
Share based compensation expense $ 26.0 $ 24.1 $ 48.0 $ 44.2
Share based compensation expense, net of tax 19.7 18.3 $ 36.4 33.5
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 $ 5.4 $ 4.8 $ 10.7 $ 8.9
Restricted Stock [Member]        
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Net of Forfeitures     101,742 98,948
Weighted average fair value per award, in dollars per share     $ 359.33 $ 276.15
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     $ 101.73 $ 76.85
Phantom Share Units (PSUs) [Member]        
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Net of Forfeitures     134,740 161,030
Weighted average fair value per award, in dollars per share     $ 374.20 $ 332.17