SHAREHOLDERS' EQUITY (Summary Of Share-Based Incentive Plan Grant Activity For Options and SAR's) (Details) - Options and SAR's $ / shares in Units, $ in Millions	3 Months Ended
	Mar. 31, 2018 USD ($) $ / shares shares
Shares
Outstanding (in shares) | shares	1,601,791
Granted (in shares) | shares	0
Exercised (in shares) | shares	(17,086)
Forfeited (in shares) | shares	(3,564)
Expired (in shares) | shares	(500)
Outstanding (in shares) | shares	1,580,641
Exercisable (in shares) | shares	979,245
Weighted Average Exercise Price
Outstanding, weighted average exercise price (in dollars per share) | $ / shares	$ 66.46
Granted, weighted average exercise price (in dollars per share) | $ / shares	0.00
Exercised, weighted average exercise price (in dollars per share) | $ / shares	43.68
Forfeited, weighted average exercise price (in dollars per share) | $ / shares	69.15
Expired, weighted average exercise price (in dollars per share) | $ / shares	72.29
Outstanding, weighted average exercise price (in dollars per share) | $ / shares	66.70
Exercisable, weighted average exercise price (in dollars per share) | $ / shares	$ 65.11
Outstanding, weighted average remaining contractual term	3 years 2 months 24 days
Exercisable, weighted average remaining contractual term	3 years 2 months 24 days
Outstanding, aggregate intrinsic value | $	$ 13.0
Exercisable, aggregate intrinsic value | $	$ 8.8