v3.25.1
Share-Based Compensation - Restricted Stock Options Activity and Status (Details) - USD ($)
$ / shares in Units, $ in Millions
 3 Months Ended
Mar. 31, 2025
Mar. 31, 2024
Share-Based Compensation    
Share-based compensation (benefit) expense before taxes $ 31.8 $ 25.6
RSUs    
Share-Based Compensation    
Number of shares of common stock entitled to recipient upon vesting (in shares) 1  
Granted (in shares) 364,948  
Share-based compensation (benefit) expense before taxes $ 23.4 15.5
Number of RSUs    
Unvested at beginning of the period (in shares) 1,219,654  
Granted (in shares) 364,948  
Vested (in shares) (143,012)  
Forfeited (in shares) (4,113)  
Unvested at the end of the period (in shares) 1,437,477  
Weighted Average Grant Date Fair Value    
Unvested at beginning of the period (in dollars per share) $ 225.40  
Granted (in dollars per share) 325.72  
Vested (in dollars per share) 212.66  
Forfeited (in dollars per share) 263.17  
Unvested at the end of the period (in dollars per share) $ 252.03  
Unrecognized compensation cost $ 236.1  
Weighted average remaining vesting period (in years) 2 years 7 months 6 days  
RSUs with Performance Conditions    
Share-Based Compensation    
Share-based compensation (benefit) expense before taxes $ 8.3 $ 2.1
RSUs with Performance Conditions | Executives    
Share-Based Compensation    
Granted (in shares) 100,000 200,000
Awards granted in period, fair value $ 38.0 $ 47.5
Number of RSUs    
Granted (in shares) 100,000 200,000
RSUs with Performance Conditions | Employees    
Share-Based Compensation    
Granted (in shares) 100,000  
Awards granted in period, fair value $ 29.3  
Number of RSUs    
Granted (in shares) 100,000