Goodwill and Intangible Assets - Schedule of Changes in the Carrying Value of Goodwill (Details) $ in Millions	6 Months Ended
	Jul. 02, 2023 USD ($)
Goodwill [Roll Forward]
Goodwill, beginning balance	$ 7,873.0
Current year acquisitions	49.4
Foreign currency changes and other	21.4
Goodwill, ending balance	7,943.8
Digital Imaging
Goodwill [Roll Forward]
Goodwill, beginning balance	6,780.4
Current year acquisitions	49.4
Foreign currency changes and other	13.4
Goodwill, ending balance	6,843.2
Instrumentation
Goodwill [Roll Forward]
Goodwill, beginning balance	913.2
Current year acquisitions	0.0
Foreign currency changes and other	6.5
Goodwill, ending balance	919.7
Aerospace and Defense Electronics
Goodwill [Roll Forward]
Goodwill, beginning balance	161.8
Current year acquisitions	0.0
Foreign currency changes and other	1.5
Goodwill, ending balance	163.3
Engineered Systems
Goodwill [Roll Forward]
Goodwill, beginning balance	17.6
Current year acquisitions	0.0
Foreign currency changes and other	0.0
Goodwill, ending balance	$ 17.6