Business Segments - Sales (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jul. 02, 2023	Jul. 03, 2022	Jul. 02, 2023	Jul. 03, 2022
Revenue from External Customer [Line Items]
Total net sales	$ 1,424.7	$ 1,355.8	$ 2,808.0	$ 2,676.8
Instrumentation
Revenue from External Customer [Line Items]
Total net sales	328.4	312.5	661.9	621.4
Instrumentation | Marine Instrumentation
Revenue from External Customer [Line Items]
Total net sales	127.4	115.3	255.6	227.2
Instrumentation | Environmental Instrumentation
Revenue from External Customer [Line Items]
Total net sales	115.3	115.5	233.2	229.5
Instrumentation | Test and Measurement Instrumentation
Revenue from External Customer [Line Items]
Total net sales	$ 85.7	$ 81.7	$ 173.1	$ 164.7