Deferred Revenue And Remaining Performance Obligations (Schedule of Deferred Revenue and Performance Obligations) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 27, 2024	Sep. 29, 2023	Sep. 27, 2024	Sep. 29, 2023
Contract With Customer, Asset And Liability [Roll Forward]
Beginning balance of the period	$ 813.6	$ 745.6	$ 761.4	$ 737.6
Revenue recognized from prior year-end	(113.4)	(107.8)	(585.9)	(543.0)
Billings net of revenue recognized from current year and other	57.0	54.8	581.7	498.0
Ending balance of the period	$ 757.2	$ 692.6	$ 757.2	$ 692.6