SHAREHOLDERS' EQUITY (Summary Of Share-Based Incentive Plan Grant Activity For Options and SAR's) (Details) - SARs - USD ($) $ / shares in Units, $ in Millions	3 Months Ended	12 Months Ended
Mar. 28, 2020	Dec. 28, 2019
Shares
Outstanding (in shares)	817,790
Granted (in shares)	181,177
Exercised (in shares)	(127,014)
Forfeited (in shares)	(71,186)
Expired (in shares)	(1,158)
Outstanding (in shares)	799,609	817,790
Exercisable (in shares)	291,228
Weighted Average Exercise Price
Outstanding, weighted average exercise price (in dollars per share)	$ 73.34
Granted, weighted average exercise price (in dollars per share)	88.25
Exercised, weighted average exercise price (in dollars per share)	70.26
Forfeited, weighted average exercise price (in dollars per share)	76.16
Expired, weighted average exercise price (in dollars per share)	73.83
Outstanding, weighted average exercise price (in dollars per share)	76.95	$ 73.34
Exercisable, weighted average exercise price (in dollars per share)	$ 69.33
Outstanding, weighted average remaining contractual term	6 years 10 months 24 days	6 years
Exercisable, weighted average remaining contractual term	3 years 7 months 6 days
Outstanding, aggregate intrinsic value	$ 0.2	$ 9.9
Exercisable, aggregate intrinsic value	$ 0.1

The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan.

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Period Type:	instant

- Definition

The weighted-average price as of the balance sheet date at which grantees can acquire the shares reserved for issuance on vested portions of options outstanding and currently exercisable under the stock option plan.