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Stock-Based Compensation - Vesting and Deferred Compensation Plan (Details) - USD ($)
$ / shares in Units, shares in Thousands, $ in Millions
12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Performance share and restricted stock awards      
Unrecognized compensation cost related to stock options $ 34.7    
Weighted average period of recognition of unrecognized compensation cost related to restricted stock awards 1 year 2 months 12 days    
Stock option awards      
Number of Shares      
Outstanding at the beginning of the period (in shares) 1,433    
Stock options granted (in shares) 117    
Options exercised (in shares) (521)    
Options forfeited (in shares) (154)    
Outstanding at the end of the period (in shares) 875 1,433  
Vested and exercisable at the end of the period (in shares) 402    
Intrinsic value of options exercised $ 118.2 $ 23.5 $ 57.9
Weighted Average Price      
Outstanding at the beginning of the period (in dollars per share) $ 199.79    
Options granted (in dollars per share) 320.38    
Options exercised (in dollars per share) 154.37    
Options forfeited (in dollars per share) 284.63    
Outstanding at the end of the period (in dollars per share) 227.97 $ 199.79  
Vested and exercisable at the end of the period (in dollars per share) $ 164.81    
Weighted average contractual term 6 years 4 months 24 days    
The weighted average contractual term of options exercisable 4 years 7 months 6 days    
Aggregate intrinsic value of options outstanding $ 123.3    
Aggregate intrinsic value of options vested and exercisable 81.9    
Performance share and restricted stock awards      
Unrecognized compensation cost related to stock options $ 11.1    
Vesting period of shares awarded under the Program 3 years    
Restricted stock awards      
Performance share and restricted stock awards      
Unrecognized compensation cost related to stock options $ 9.1    
Vesting period of shares awarded under the Program 3 years    
Weighted average period of recognition of unrecognized compensation cost related to restricted stock awards 1 year 8 months 12 days    
Intrinsic value of shares vested during year ended December 31 $ 18.5 $ 10.7 $ 15.7
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]      
Outstanding at beginning of period (shares) 126    
Awards granted (in shares) 36    
Awards vested (in shares) (53)    
Awards forfeited (in shares) (9)    
Outstanding at end of period (shares) 100 126  
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract]      
Outstanding at beginning of period (in dollars per share) $ 205.96    
Awards granted (in dollars per share) 337.83 $ 250.83 $ 227.44
Award vested (in dollars per share) 170.01    
Awards forfeited (in dollars per share) 285.75    
Outstanding at end of period (in dollars per share) $ 265.53 $ 205.96  
Weighted average contractual term 1 year    
Aggregate intrinsic value $ 36.9    
Performance share awards      
Performance share and restricted stock awards      
Unrecognized compensation cost related to stock options $ 10.7    
Vesting period of shares awarded under the Program 3 years    
Weighted average period of recognition of unrecognized compensation cost related to restricted stock awards 1 year 8 months 12 days    
Fair value of shares vested during year ended December 31 $ 31.0 $ 19.9 $ 22.0
Measurement period 3 years    
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]      
Outstanding at beginning of period (shares) 118    
Awards granted (in shares) 24    
Awards vested (in shares) (96)    
Awards converted (in shares) 48    
Awards forfeited (in shares) (4)    
Outstanding at end of period (shares) 90 118  
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract]      
Outstanding at beginning of period (in dollars per share) $ 285.97    
Awards granted (in dollars per share) 467.92 $ 368.47 $ 313.77
Award vested (in dollars per share) 213.19    
Awards converted (in dollars per share) 213.19    
Awards forfeited (in dollars per share) 405.35    
Outstanding at end of period (in dollars per share) $ 368.42 $ 285.97  
Weighted average contractual term 9 months 18 days    
Aggregate intrinsic value $ 33.1    
Deferred Compensation Equity      
Performance share and restricted stock awards      
Number of common stock deferred (in shares) 59 63