Retirement Plans (Schedule Of Reconciliation Of Funded Status Of The Defined Benefit Plans) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Jan. 01, 2022
Change in Fair Value of Plan Assets:
Fair Value of Plan Assets at Beginning of Period	$ 346.2
Fair Value of Plan Assets at End of Period	367.7	$ 346.2
United States
Change in Fair Value of Plan Assets:
Employer Contributions	24.3	16.2	$ 9.8
International Plan
Change in Fair Value of Plan Assets:
Employer Contributions	15.7	7.8	5.7
Pension Plan
Change in Projected Benefit Obligation:
Obligation at Beginning of Period	440.3	587.2
Service Cost	2.1	1.4	1.2
Interest Cost	22.8	14.0	7.5
Actuarial Loss (Gain)	20.1	(123.9)
Less: Benefits Paid	34.4	32.5
Settlements	(3.9)	(0.2)
Foreign Currency Translation	6.0	(5.7)
Acquisitions	30.1	0.0
Obligation at End of Period	483.1	440.3	587.2
Change in Fair Value of Plan Assets:
Fair Value of Plan Assets at Beginning of Period	346.2	478.9
Actual Return on Plan Assets	34.2	(104.5)
Employer Contributions	8.3	8.3
Less: Benefits Paid	34.4	32.5
Settlements	(3.9)	(0.2)
Foreign Currency Translation	3.6	(3.8)
Acquisitions	13.7	0.0
Fair Value of Plan Assets at End of Period	367.7	346.2	$ 478.9
Funded Status	(115.4)	(94.1)
Pension Plan | United States
Change in Fair Value of Plan Assets:
Funded Status	(64.5)	(64.6)
Pension Plan | International Plan
Change in Fair Value of Plan Assets:
Funded Status	$ (50.9)	$ (29.5)