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
	Jan. 02, 2021	Dec. 28, 2019	Dec. 29, 2018
Change in Fair Value of Plan Assets:
Fair Value of Plan Assets at Beginning of Period	$ 203.4
Fair Value of Plan Assets at End of Period	230.2	$ 203.4
Net Actuarial Losses	24.1	37.0
Actuarial Losses Decrease in Discount Rate and Census Experience Offset	2.9	2.1
United States
Change in Fair Value of Plan Assets:
Employer Contributions	7.6	8.9	$ 10.1
International Plan
Change in Fair Value of Plan Assets:
Employer Contributions	5.5	10.6	11.8
Pension Plan
Change in Projected Benefit Obligation:
Obligation at Beginning of Period	282.8	265.1
Service Cost	2.0	6.2	7.3
Interest Cost	8.0	10.6	9.3
Actuarial (Gain) Loss	21.2	34.9
Curtailment Gain	0.0	(19.4)
Less: Benefits Paid	15.9	14.8
Foreign Currency Translation	0.3	0.2
Obligation at End of Period	298.4	282.8	265.1
Change in Fair Value of Plan Assets:
Fair Value of Plan Assets at Beginning of Period	203.4	174.0
Actual Return on Plan Assets	33.7	33.1
Employer Contributions	8.5	10.8
Less: Benefits Paid	15.9	14.8
Foreign Currency Translation	0.5	0.3
Fair Value of Plan Assets at End of Period	230.2	203.4	174.0
Funded Status	(68.2)	(79.4)
Pension Plan | United States
Change in Fair Value of Plan Assets:
Funded Status	(62.6)	(71.2)
Pension Plan | International Plan
Change in Fair Value of Plan Assets:
Funded Status	(5.6)	(8.2)
Postretirement Health Coverage
Change in Projected Benefit Obligation:
Obligation at Beginning of Period	5.9	9.2
Service Cost	0.0	0.0	0.1
Interest Cost	0.2	0.3	0.4
Actuarial (Gain) Loss	0.1	(0.7)
Amendments	0.0	(1.9)
Curtailment Gain	0.0	(0.5)
Participant Contributions	0.2	0.2
Less: Benefits Paid	0.5	0.7
Obligation at End of Period	5.9	5.9	$ 9.2
Change in Fair Value of Plan Assets:
Employer Contributions	$ 0.3	$ 0.4