Stock-Based Compensation Plans (Schedule Of Other Data For Stock Options, Stock Awards And PSUs) (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2023 USD ($)
Stock Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total unrecognized compensation at the end of the year	$ 60,819
Weighted average period over which unrecognized compensation to be recognized (years)	2 years 2 months 12 days
Actual income tax benefit realized	$ 12,139
Aggregate intrinsic value vested and expected to vest	134,531
Stock Awards [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Actual income tax benefit realized	321
Performance Stock Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total unrecognized compensation at the end of the year	$ 10,125
Weighted average period over which unrecognized compensation to be recognized (years)	1 year 7 months 6 days
Actual income tax benefit realized	$ 1,478
Aggregate intrinsic value vested and expected to vest	$ 28,719