Goodwill and Intangible Assets - Schedule of Changes in the Carrying Value of Goodwill (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Jan. 01, 2023
Goodwill [Roll Forward]
Goodwill, beginning balance	$ 7,873.0	$ 7,986.7
Current year acquisitions	76.6	78.5
Foreign currency changes and other	53.2	(192.2)
Goodwill, ending balance	8,002.8	7,873.0
Digital Imaging
Goodwill [Roll Forward]
Goodwill, beginning balance	6,780.4	6,867.5
Current year acquisitions	55.5	78.5
Foreign currency changes and other	41.1	(165.6)
Goodwill, ending balance	6,877.0	6,780.4
Instrumentation
Goodwill [Roll Forward]
Goodwill, beginning balance	913.2	935.9
Current year acquisitions	21.1	0.0
Foreign currency changes and other	10.5	(22.7)
Goodwill, ending balance	944.8	913.2
Aerospace and Defense Electronics
Goodwill [Roll Forward]
Goodwill, beginning balance	161.8	165.7
Current year acquisitions	0.0	0.0
Foreign currency changes and other	1.6	(3.9)
Goodwill, ending balance	163.4	161.8
Engineered Systems
Goodwill [Roll Forward]
Goodwill, beginning balance	17.6	17.6
Current year acquisitions	0.0	0.0
Foreign currency changes and other	0.0	0.0
Goodwill, ending balance	$ 17.6	$ 17.6