Restructuring and Related Charges (Schedule of Restructuring Reserves by Type of Cost) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 29, 2024	Mar. 31, 2023
Restructuring Reserve [Roll Forward]
Total Restructuring And Related Expense	$ 10.2	$ 1.9
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	10.2	1.1
Restructuring Fiscal 2018 Plan
Restructuring Reserve [Roll Forward]
Total Restructuring And Related Expense	0.0	1.9
Restructuring Fiscal 2021 Plan
Restructuring Reserve [Roll Forward]
Beginning Balance	0.0
Charges from continuing operations	10.2
Cash payments	(6.0)
Ending Balance	4.2
Total Restructuring And Related Expense	10.2	$ 0.0
One-time Termination Benefits
Restructuring Reserve [Roll Forward]
Total Restructuring And Related Expense	4.6
One-time Termination Benefits | Restructuring Fiscal 2021 Plan
Restructuring Reserve [Roll Forward]
Beginning Balance	0.0
Charges from continuing operations	4.6
Cash payments	(2.8)
Ending Balance	1.8
Contract Termination
Restructuring Reserve [Roll Forward]
Total Restructuring And Related Expense	5.6
Contract Termination | Restructuring Fiscal 2021 Plan
Restructuring Reserve [Roll Forward]
Beginning Balance	0.0
Charges from continuing operations	5.6
Cash payments	(3.2)
Ending Balance	$ 2.4