Share-Based Compensation (Schedule Of Stock Options Activity) (Details) $ / shares in Units, shares in Thousands, $ in Thousands	9 Months Ended
	Sep. 30, 2021 USD ($) $ / shares shares
Share-based Payment Arrangement [Abstract]
Outstanding at beginning of year, number of shares | shares	10,204
Outstanding at beginning of year, weighted-average exercise price | $ / shares	$ 58.59
Exercised, number of shares | shares	(3,779)
Exercised, weighted-average exercise price | $ / shares	$ 56.92
Forfeited and expired, number of shares | shares	(180)
Forfeited and expired, weighted-average exercise price | $ / shares	$ 56.49
Outstanding end of year, number of shares | shares	6,245
Outstanding at end of year, weighted-average exercise price | $ / shares	$ 59.66
Outstanding at end of year, aggregate intrinsic value | $	$ 67,999
Outstanding at end of year, weighted-average remaining contractual term	4 years 5 months 23 days
Exercisable at end of year, number of shares | shares	4,748
Exercisable at end of year, weighted-average exercise price | $ / shares	$ 59.06
Exercisable at end of year, aggregate intrinsic value | $	$ 54,598
Exercisable at end of year, weighted-average remaining contractual term	3 years 9 months 21 days