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Equity and Cash Incentive Program - Schedule of Activity for Performance Share Awards (Details) - $ / shares
12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Performance Shares      
Number of Shares      
Unvested, beginning balance (in shares) 79,075    
Granted (in shares) 34,458 43,602 43,656
Forfeited (in shares) 0    
Vested (in shares) (43,157)    
Unvested, ending balance (in shares) 70,376 79,075  
Weighted Average Grant-Date Fair Value      
Unvested, beginning balance (in dollars per share) $ 240.59    
Granted (in dollars per share) 260.36    
Forfeited (in dollars per share) 0    
Vested (in dollars per share) 247.38    
Unvested, ending balance (in dollars per share) $ 246.09 $ 240.59  
Restricted Stock Units (RSUs)      
Number of Shares      
Unvested, beginning balance (in shares) 163,600    
Granted (in shares) 66,762 94,307 91,439
Forfeited (in shares) (10,232)    
Vested (in shares) (130,058)    
Unvested, ending balance (in shares) 90,072 163,600  
Weighted Average Grant-Date Fair Value      
Unvested, beginning balance (in dollars per share) $ 155.62    
Granted (in dollars per share) 202.33 $ 160.11 $ 153.25
Forfeited (in dollars per share) 175.77    
Vested (in dollars per share) 166.10    
Unvested, ending balance (in dollars per share) $ 172.82 $ 155.62