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Incentive Plans - Schedule of Changes in Stock Options Outstanding (Details)
$ / shares in Units, $ in Millions
 3 Months Ended
Mar. 31, 2025
USD ($)
$ / shares
shares
Number of Shares  
Beginning balance (in shares) | shares 259,750
Granted (in shares) | shares 28,900
Exercised (in shares) | shares (3,450)
Forfeited (in shares) | shares (900)
Ending balance (in shares) | shares 284,300
Exercisable (in shares) | shares 205,540
Weighted Average Exercise Price  
Beginning balance (in dollars per share) | $ / shares $ 180.68
Granted (in dollars per share) | $ / shares 492.22
Exercised (in dollars per share) | $ / shares 201.46
Forfeited (in dollars per share) | $ / shares 320.40
Ending balance (in dollars per share) | $ / shares 211.65
Exercisable (in dollars per share) | $ / shares $ 139.32
Weighted Average Remaining Contractual Term (Years)  
Outstanding, weighted average remaining contractual term (in years) 3 years 7 months 6 days
Exercisable, weighted average remaining contractual term (in years) 2 years 7 months 6 days
Aggregate Intrinsic Value (Millions of Dollars)  
Outstanding, aggregate intrinsic value | $ $ 74.0
Exercisable, aggregate intrinsic value | $ $ 67.9