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Stock-Based Compensation - Schedule of Weighted-Average Grant-Date Fair Value of Unvested Restricted Stock (Details) - $ / shares
12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Executive Performance Shares      
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares      
Grant-date fair value per share, beginning of year (in dollars per share) $ 115.78    
Grants (in dollars per share) 127.44    
Estimated additional performance shares (in dollars per share) 126.75    
Restriction lapses (in dollars per share) (103.23)    
Forfeitures (in dollars per share) 0    
Grant-date fair value per share, end of year (in dollars per share) 125.58 $ 115.78  
Directors Restricted Stock      
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares      
Grant-date fair value per share, beginning of year (in dollars per share) 0    
Grants (in dollars per share) 115.20 122.06 $ 119.59
Estimated additional performance shares (in dollars per share) 0    
Restriction lapses (in dollars per share) (115.20)    
Forfeitures (in dollars per share) 0    
Grant-date fair value per share, end of year (in dollars per share) 0 0  
Directors Restricted Stock Units      
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares      
Grant-date fair value per share, beginning of year (in dollars per share) 0    
Grants (in dollars per share) 114.34    
Estimated additional performance shares (in dollars per share) 0    
Restriction lapses (in dollars per share) (114.34)    
Forfeitures (in dollars per share) 0    
Grant-date fair value per share, end of year (in dollars per share) 0 0  
Employees Restricted Stock Units      
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares      
Grant-date fair value per share, beginning of year (in dollars per share) 124.02    
Grants (in dollars per share) 127.18    
Estimated additional performance shares (in dollars per share) 0    
Restriction lapses (in dollars per share) (119.99)    
Forfeitures (in dollars per share) (125.89)    
Grant-date fair value per share, end of year (in dollars per share) $ 125.17 $ 124.02