Share-Based Compensation (Schedule Of Stock Options Activity) (Details) $ / shares in Units, shares in Thousands, $ in Thousands	6 Months Ended
	Jun. 30, 2020 USD ($) $ / shares shares
Share-based Payment Arrangement [Abstract]
Outstanding at beginning of year, number of shares | shares	15,416
Outstanding at beginning of year, weighted-average exercise price | $ / shares	$ 56.36
Granted, number of shares | shares	2
Granted, weighted-average exercise price | $ / shares	$ 73.01
Exercised, number of shares | shares	(3,159)
Exercised, weighted-average exercise price | $ / shares	$ 49.65
Forfeited and expired, number of shares | shares	(211)
Forfeited and expired, weighted-average exercise price | $ / shares	$ 61.40
Outstanding end of year, number of shares | shares	12,048
Outstanding at end of year, weighted-average exercise price | $ / shares	$ 58.04
Outstanding at end of year, aggregate intrinsic value | $	$ 127,611
Outstanding at end of year, weighted-average remaining contractual term	5 years 10 months 17 days
Exercisable at end of year, number of shares | shares	7,988
Exercisable at end of year, weighted-average exercise price | $ / shares	$ 56.55
Exercisable at end of year, aggregate intrinsic value | $	$ 96,755
Exercisable at end of year, weighted-average remaining contractual term	5 years 21 days