Restructuring and Related Charges (Schedule of Restructuring Reserves by Type of Cost) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 28, 2024	Jun. 30, 2023	Jun. 28, 2024	Jun. 30, 2023
Restructuring Reserve [Roll Forward]
Total Restructuring And Related Expense			$ 10.4	$ 1.7
Restructuring and Related Costs, Non-cash Charges, Including Accelerated Depreciation			0.0	(0.8)
Restructuring and Related Costs, Total Charges Expected to be Settled in Cash	$ 0.2	$ (0.2)	10.4	0.9
Restructuring Fiscal 2018 Plan
Restructuring Reserve [Roll Forward]
Total Restructuring And Related Expense	0.0	(0.2)	0.0	1.7
Restructuring Fiscal 2021 Plan
Restructuring Reserve [Roll Forward]
Beginning Balance			0.0
Charges from continuing operations			10.4
Cash payments			(7.1)
Ending Balance	3.3		3.3
Total Restructuring And Related Expense	0.2	$ 0.0	10.4	$ 0.0
One-time Termination Benefits | Restructuring Fiscal 2021 Plan
Restructuring Reserve [Roll Forward]
Beginning Balance			0.0
Charges from continuing operations			4.6
Cash payments			(3.1)
Ending Balance	1.5		1.5
Contract Termination | Restructuring Fiscal 2021 Plan
Restructuring Reserve [Roll Forward]
Beginning Balance			0.0
Charges from continuing operations			5.8
Cash payments			(4.0)
Ending Balance	$ 1.8		$ 1.8