Retirement and Post Retirement Health Care Plans (Schedule Of Reconciliation Of Funded Status Of The Defined Benefit Plans) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Jan. 02, 2016	Jan. 03, 2015
Change in Fair Value of Plan Assets:
Fair Value of Plan Assets at Beginning of Period	$ 162.1
Employer Contributions	9.2	$ 4.7
Fair Value of Plan Assets at End of Period	160.3	162.1
Pension Plan [Member]
Change in Projected Benefit Obligation:
Obligation at Beginning of Period	255.1	194.3
Service Cost	8.1	10.0	$ 2.5
Interest Cost	9.8	10.7	8.3
Actuarial (Gain) Loss	3.6	(18.2)
Less: Benefits Paid	18.9	11.7
Foreign Currency Translation	(0.8)	(0.8)
Acquisitions	0.0	70.8
Obligation at End of Period:	256.9	255.1	194.3
Change in Fair Value of Plan Assets:
Fair Value of Plan Assets at Beginning of Period	162.1	126.6
Actual Return on Plan Assets	7.9	(1.0)
Employer Contributions	9.2	4.7
Less: Benefits Paid	18.9	11.7
Foreign Currency Translation	0.0	(0.4)
Acquisitions	0.0	43.9
Fair Value of Plan Assets at End of Period	160.3	162.1	126.6
Funded Status	(96.6)	(93.0)
Postretirement Health Coverage [Member]
Change in Projected Benefit Obligation:
Obligation at Beginning of Period	16.8	0.0
Service Cost	0.1	0.1
Interest Cost	0.5	0.5
Actuarial (Gain) Loss	(2.4)	2.9
Participant Contributions	0.2	0.6
Less: Benefits Paid	1.4	3.1
Acquisitions	0.0	15.8
Obligation at End of Period:	13.8	$ 16.8	$ 0.0
Change in Fair Value of Plan Assets:
Employer Contributions	$ 1.2