Restructuring and Related Charges (Schedule of Restructuring Reserves by Type of Cost) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 27, 2024	Sep. 29, 2023	Sep. 27, 2024	Sep. 29, 2023
Restructuring Reserve [Roll Forward]
Total Restructuring And Related Expense			$ 10.5	$ 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	$ 0.1	$ (0.1)	10.5	0.9
Restructuring Fiscal 2018 Plan
Restructuring Reserve [Roll Forward]
Total Restructuring And Related Expense	0.0	(0.1)	0.0	1.7
Restructuring Fiscal 2021 Plan
Restructuring Reserve [Roll Forward]
Beginning Balance			0.0
Charges from continuing operations			10.5
Cash payments			(7.7)
Ending Balance	2.8		2.8
Total Restructuring And Related Expense	0.1	$ 0.0	10.5	$ 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			(3.2)
Ending Balance	1.4		1.4
Contract Termination | Restructuring Fiscal 2021 Plan
Restructuring Reserve [Roll Forward]
Beginning Balance			0.0
Charges from continuing operations			5.9
Cash payments			(4.5)
Ending Balance	$ 1.4		$ 1.4