Shareholders' Equity (Schedule Of Share-Based Incentive Plan Grant Activity) (Details) - Options and SAR's [Member] - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
	Dec. 31, 2016	Jan. 02, 2016
Share-based incentive plan grant activity
Options Shares Outstanding, Beginning Balance (in shares)	1,548,266
Option Shares, Granted (in shares)	293,400
Options Shares, Exercised (in shares)	(137,475)
Option Shares, Forfeited (in shares)	(34,887)
Option Shares, Expired (in shares)	(58,805)
Options Shares Outstanding, Ending Balance (in shares)	1,610,499	1,548,266
Options Shares, Exercisable, Ending Balance (in shares)	952,766
Options Weighted Average Exercise Price. Beginning Balance (in dollars per share)	$ 63.09
Options Weighted Average Exercise Price, Granted (in dollars per share)	57.43
Options Weighted Average Exercise Price, Exercised (in dollars per share)	45.60
Options Weighted Average Exercise Price, Forfeited (in dollars per share)	71.91
Options Weighted Average Exercise Price, Expired (in dollars per share)	68.56
Options Weighted Average Exercise Price, Ending Balance (in dollars per share)	63.16	$ 63.09
Options Weighted Average Exercise Price at End of Period (in dollars per share)	$ 60.77
Options Outstanding Weighted Average Remaining Contractual Terms (years)		5 years 9 months 20 days
Options Exercisable Weighted Average Remaining Contractual Term (years)	4 years 10 days
Options Outstanding Aggregate Intrinsic Value	$ 12.9
Options Exercisable Aggregate Intrinsic Value	$ 9.2