Segment Information - Sales (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jul. 03, 2022	Jul. 04, 2021	Jul. 03, 2022	Jul. 04, 2021
Revenue from External Customer [Line Items]
Net sales	$ 1,355.8	$ 1,121.0	$ 2,676.8	$ 1,926.7
Instrumentation
Revenue from External Customer [Line Items]
Net sales	312.5	291.1	621.4	577.6
Instrumentation | Environmental Instrumentation
Revenue from External Customer [Line Items]
Net sales	115.5	112.8	229.5	227.6
Instrumentation | Marine Instrumentation
Revenue from External Customer [Line Items]
Net sales	115.3	104.9	227.2	206.9
Instrumentation | Test and Measurement Instrumentation
Revenue from External Customer [Line Items]
Net sales	$ 81.7	$ 73.4	$ 164.7	$ 143.1