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Stock-Based Compensation - Summary of RSU Activity (Details) - Restricted Stock - USD ($)
$ / shares in Units, $ in Millions
12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Number of RSUs      
Outstanding at beginning of year (in shares) 401,924    
Granted (in shares) 343,564    
Vested (in shares) (302,713)    
Forfeited (in shares) (7,901)    
Outstanding at end of year (in shares) 434,874 401,924  
Weighted Average Grant Date Fair Value Per Share      
Outstanding, beginning of year (in dollars per share) $ 231.09    
Granted (in dollars per share) 232.22 $ 271.75 $ 238.89
Vested (in dollars per share) 194.37    
Forfeited (in dollars per share) 246.91    
Outstanding, ending of year (in dollars per share) $ 244.21 $ 231.09  
Aggregate Intrinsic Value      
Outstanding, aggregate intrinsic value $ 135.6 $ 95.4  
Weighted Average Remaining Term (in Years)      
Outstanding, weighted average remaining contractual terms (in years) 1 year 3 months 3 days 1 year 7 days