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
	Apr. 01, 2017 USD ($) $ / shares shares
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Outstanding (in shares) | shares	1,610,499
Granted (in shares) | shares	0
Exercised (in shares) | shares	(98,091)
Forfeited (in shares) | shares	(1,180)
Expired (in shares) | shares	(410)
Outstanding (in shares) | shares	1,510,818
Exercisable (in shares) | shares	867,775
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Abstract]
Outstanding, weighted average exercise price (in dollars per share) | $ / shares	$ 63.16
Granted, weighted average exercise price (in dollars per share) | $ / shares	0.00
Exercised, weighted average exercise price (in dollars per share) | $ / shares	49.04
Forfeited, weighted average exercise price (in dollars per share) | $ / shares	54.61
Expired, weighted average exercise price (in dollars per share) | $ / shares	75.76
Outstanding, weighted average exercise price (in dollars per share) | $ / shares	64.08
Exercisable, weighted average exercise price (in dollars per share) | $ / shares	$ 62.31
Outstanding, weighted average remaining contractual term (in years)	5 years 8 months 12 days
Exercisable, weighted average remaining contractual term (in years)	4 years
Outstanding, aggregate intrinsic value | $	$ 17.8
Exercisable, aggregate intrinsic value | $	$ 11.6