Shareholders' Equity (Schedule Of Share-Based Incentive Plan Grant Activity) (Details) - Options and SAR's $ / shares in Units, $ in Millions	12 Months Ended
	Dec. 28, 2019 USD ($) $ / shares shares
Shares
Shares Outstanding, Beginning Balance (in shares) | shares	1,539,368
Shares, Granted (in shares) | shares	188,809
Shares, Exercised (in shares) | shares	(869,183)
Shares, Forfeited (in shares) | shares	(37,136)
Shares, Expired (in shares) | shares	(4,068)
Shares Outstanding, Ending Balance (in shares) | shares	817,790
Shares, Exercisable, Ending Balance (in shares) | shares	415,570
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	$ 69.31
Weighted Average Exercise Price, Granted (in dollars per share) | $ / shares	81.81
Weighted Average Exercise Price, Exercised (in dollars per share) | $ / shares	67.88
Weighted Average Exercise Price, Forfeited (in dollars per share) | $ / shares	76.94
Weighted Average Exercise Price, Expired (in dollars per share) | $ / shares	74.37
Weighted Average Exercise Price, Ending Balance (in dollars per share) | $ / shares	73.34
Weighted Average Exercise Price, Exercisable, End of Period (in dollars per share) | $ / shares	$ 69.57
Outstanding Weighted Average Remaining Contractual Terms (years)	6 years
Exercisable Weighted Average Remaining Contractual Term (years)	3 years 9 months 18 days
Outstanding Aggregate Intrinsic Value | $	$ 9.9
Exercisable Aggregate Intrinsic Value | $	$ 6.6