Shareholders' Equity (Schedule Of Share-Based Incentive Plan Grant Activity) (Details) - Options and SAR's $ / shares in Units, $ in Millions	12 Months Ended
	Dec. 29, 2018 USD ($) $ / shares shares
Shares
Shares Outstanding, Beginning Balance (in shares) | shares	1,601,791
Shares, Granted (in shares) | shares	193,357
Shares, Exercised (in shares) | shares	(249,324)
Shares, Forfeited (in shares) | shares	(5,206)
Shares, Expired (in shares) | shares	(1,250)
Shares Outstanding, Ending Balance (in shares) | shares	1,539,368
Shares, Exercisable, Ending Balance (in shares) | shares	928,987
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	$ 66.46
Weighted Average Exercise Price, Granted (in dollars per share) | $ / shares	77.60
Weighted Average Exercise Price, Exercised (in dollars per share) | $ / shares	57.54
Weighted Average Exercise Price, Forfeited (in dollars per share) | $ / shares	70.30
Weighted Average Exercise Price, Expired (in dollars per share) | $ / shares	54.28
Weighted Average Exercise Price, Ending Balance (in dollars per share) | $ / shares	69.31
Weighted Average Exercise Price, Exercisable, End of Period (in dollars per share) | $ / shares	$ 66.61
Outstanding Weighted Average Remaining Contractual Terms (years)	5 years 6 months 19 days
Exercisable Weighted Average Remaining Contractual Term (years)	3 years 10 months 14 days
Outstanding Aggregate Intrinsic Value | $	$ 16.0
Exercisable Aggregate Intrinsic Value | $	$ 12.0