Share-Based Compensation Plans (Schedule Of Restricted Stock, RSUs, Performance Restricted Stock and PSUs Activity) (Details)	12 Months Ended
	Dec. 31, 2024 $ / shares shares
RSUs [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Beginning balance, Number of shares | shares	205,400
Granted, Number of shares | shares	68,800
Performance adjustments, Number of shares | shares	0
Vested, Number of shares | shares	(33,700)
Forfeited, Number of shares | shares	(8,700)
Ending balance, Number of shares | shares	231,800
Beginning balance, Weighted-average fair value at grant date | $ / shares	$ 75.56
Granted, Weighted-average fair value at grant date | $ / shares	124.1
Performance adjustments, Weighted-average fair value at grant date | $ / shares	0
Vested, Weighted-average fair value at grant date | $ / shares	(82.29)
Forfeited, Weighted-average fair value at grant date | $ / shares	(89.8)
Ending balance, Weighted-average fair value at grant date | $ / shares	$ 88.46
PSUs [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Beginning balance, Number of shares | shares	308,500
Granted, Number of shares | shares	65,700
Performance adjustments, Number of shares | shares	(200)
Vested, Number of shares | shares	(103,900)
Forfeited, Number of shares | shares	(9,100)
Ending balance, Number of shares | shares	261,000
Beginning balance, Weighted-average fair value at grant date | $ / shares	$ 98.44
Granted, Weighted-average fair value at grant date | $ / shares	140.44
Performance adjustments, Weighted-average fair value at grant date | $ / shares	(102.16)
Vested, Weighted-average fair value at grant date | $ / shares	(104.75)
Forfeited, Weighted-average fair value at grant date | $ / shares	(100.83)
Ending balance, Weighted-average fair value at grant date | $ / shares	$ 108.09