Share-Based Compensation (Schedule Of Stock Options Activity) (Details) $ / shares in Units, shares in Thousands, $ in Thousands	9 Months Ended
	Sep. 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	3
Granted, weighted-average exercise price | $ / shares	$ 72.36
Exercised, number of shares | shares	(4,009)
Exercised, weighted-average exercise price | $ / shares	$ 50.67
Forfeited and expired, number of shares | shares	(228)
Forfeited and expired, weighted-average exercise price | $ / shares	$ 61.32
Outstanding end of year, number of shares | shares	11,182
Outstanding at end of year, weighted-average exercise price | $ / shares	$ 58.31
Outstanding at end of year, aggregate intrinsic value | $	$ 156,372
Outstanding at end of year, weighted-average remaining contractual term	5 years 8 months 12 days
Exercisable at end of year, number of shares | shares	7,248
Exercisable at end of year, weighted-average exercise price | $ / shares	$ 56.87
Exercisable at end of year, aggregate intrinsic value | $	$ 111,738
Exercisable at end of year, weighted-average remaining contractual term	4 years 10 months 6 days