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Share-Based Compensation Plans (Schedule Of Restricted Stock, RSUs, Performance Restricted Stock and PSUs Activity) (Details)
 12 Months Ended
Dec. 31, 2025
$ / shares
shares
RSUs [Member]  
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]  
Beginning balance, Number of shares | shares 231,800
Granted, Number of shares | shares 47,800
Performance adjustments, Number of shares | shares 0
Vested, Number of shares | shares (34,500)
Forfeited, Number of shares | shares (3,400)
Ending balance, Number of shares | shares 241,700
Beginning balance, Weighted-average fair value at grant date | $ / shares $ 88.46
Granted, Weighted-average fair value at grant date | $ / shares 157.15
Performance adjustments, Weighted-average fair value at grant date | $ / shares 0
Vested, Weighted-average fair value at grant date | $ / shares (91.12)
Forfeited, Weighted-average fair value at grant date | $ / shares (106.32)
Ending balance, Weighted-average fair value at grant date | $ / shares $ 101.37
PSUs [Member]  
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]  
Beginning balance, Number of shares | shares 261,000
Granted, Number of shares | shares 56,200
Performance adjustments, Number of shares | shares 29,700
Vested, Number of shares | shares (136,400)
Forfeited, Number of shares | shares (3,400)
Ending balance, Number of shares | shares 207,100
Beginning balance, Weighted-average fair value at grant date | $ / shares $ 108.09
Granted, Weighted-average fair value at grant date | $ / shares 161.61
Performance adjustments, Weighted-average fair value at grant date | $ / shares 83.75
Vested, Weighted-average fair value at grant date | $ / shares (101.42)
Forfeited, Weighted-average fair value at grant date | $ / shares (125.62)
Ending balance, Weighted-average fair value at grant date | $ / shares $ 128.22