Shareholders' Equity (Schedule Of Share-Based Incentive Plan Grant Activity) (Details) - Options and SAR's $ / shares in Units, $ in Millions	12 Months Ended
	Dec. 30, 2017 USD ($) $ / shares shares
Shares
Shares Outstanding, Beginning Balance (in shares) | shares	1,610,499
Shares, Granted (in shares) | shares	195,207
Shares, Exercised (in shares) | shares	(184,191)
Shares, Forfeited (in shares) | shares	(10,239)
Shares, Expired (in shares) | shares	(9,485)
Shares Outstanding, Ending Balance (in shares) | shares	1,601,791
Shares, Exercisable, Ending Balance (in shares) | shares	940,751
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Abstract]
Weighted Average Exercise Price. Beginning Balance (in dollars per share) | $ / shares	$ 63.16
Weighted Average Exercise Price, Granted (in dollars per share) | $ / shares	80.72
Weighted Average Exercise Price, Exercised (in dollars per share) | $ / shares	52.89
Weighted Average Exercise Price, Forfeited (in dollars per share) | $ / shares	65.13
Weighted Average Exercise Price, Expired (in dollars per share) | $ / shares	64.21
Weighted Average Exercise Price, Ending Balance (in dollars per share) | $ / shares	66.46
Weighted Average Exercise Price, Exercisable, End of Period (in dollars per share) | $ / shares	$ 64.47
Outstanding Weighted Average Remaining Contractual Terms (years)	5 years 8 months 20 days
Exercisable Weighted Average Remaining Contractual Term (years)	3 years 10 months 10 days
Outstanding Aggregate Intrinsic Value | $	$ 17.2
Exercisable Aggregate Intrinsic Value | $	$ 11.5