Stock-Based Compensation Plans (Schedule Of Company's Stock Option Plans) (Details) shares in Thousands	12 Months Ended
	Dec. 31, 2020 $ / shares shares
Number of Shares (in 000’s)
Options outstanding Beginning Balance (in shares) | shares	2,582
Granted (in shares) | shares	640
Exercised (in shares) | shares	(183)
Canceled (in shares) | shares	(163)
Options outstanding Ending Balance (in shares) | shares	2,876
Options exercisable (in shares) | shares	1,694
Weighted Average Exercise Price
Options outstanding Beginning Balance (in dollars per share) | $ / shares	$ 66.26
Granted (in dollars per share) | $ / shares	76.29
Exercised (in dollars per share) | $ / shares	48.78
Canceled (in dollars per share) | $ / shares	79.05
Options outstanding Ending Balance (in dollars per share) | $ / shares	68.88
Options exercisable (in dollars per share) | $ / shares	$ 61.86
Weighted Average Remaining Life (Years), Options outstanding	6 years 4 months 13 days
Weighted Average Remaining Life (Years), Options exercisable	5 years