Revenue Recognition and Contract Balances - Disaggregation of Revenue (Details) - USD ($) $ in Millions	3 Months Ended
	Apr. 02, 2023	Apr. 03, 2022
Disaggregation of Revenue [Line Items]
Net sales	$ 1,383.3	$ 1,321.0
United States
Disaggregation of Revenue [Line Items]
Net sales	695.8	689.5
Europe
Disaggregation of Revenue [Line Items]
Net sales	324.0	287.3
Asia
Disaggregation of Revenue [Line Items]
Net sales	243.1	229.6
All other
Disaggregation of Revenue [Line Items]
Net sales	120.4	114.6
U.S. Govt.
Disaggregation of Revenue [Line Items]
Net sales	311.5	310.2
Other
Disaggregation of Revenue [Line Items]
Net sales	1,071.8	1,010.8
Digital Imaging
Disaggregation of Revenue [Line Items]
Net sales	772.5	750.5
Digital Imaging | United States
Disaggregation of Revenue [Line Items]
Net sales	334.4	337.2
Digital Imaging | Europe
Disaggregation of Revenue [Line Items]
Net sales	197.3	183.8
Digital Imaging | Asia
Disaggregation of Revenue [Line Items]
Net sales	158.4	149.6
Digital Imaging | All other
Disaggregation of Revenue [Line Items]
Net sales	82.4	79.9
Digital Imaging | U.S. Govt.
Disaggregation of Revenue [Line Items]
Net sales	130.4	141.5
Digital Imaging | Other
Disaggregation of Revenue [Line Items]
Net sales	642.1	609.0
Instrumentation
Disaggregation of Revenue [Line Items]
Net sales	333.5	308.9
Instrumentation | United States
Disaggregation of Revenue [Line Items]
Net sales	138.0	133.4
Instrumentation | Europe
Disaggregation of Revenue [Line Items]
Net sales	97.2	80.9
Instrumentation | Asia
Disaggregation of Revenue [Line Items]
Net sales	67.5	65.6
Instrumentation | All other
Disaggregation of Revenue [Line Items]
Net sales	30.8	29.0
Instrumentation | U.S. Govt.
Disaggregation of Revenue [Line Items]
Net sales	23.0	22.4
Instrumentation | Other
Disaggregation of Revenue [Line Items]
Net sales	310.5	286.5
Aerospace and Defense Electronics
Disaggregation of Revenue [Line Items]
Net sales	173.2	166.2
Aerospace and Defense Electronics | United States
Disaggregation of Revenue [Line Items]
Net sales	120.1	123.9
Aerospace and Defense Electronics | Europe
Disaggregation of Revenue [Line Items]
Net sales	29.5	22.6
Aerospace and Defense Electronics | Asia
Disaggregation of Revenue [Line Items]
Net sales	17.0	14.2
Aerospace and Defense Electronics | All other
Disaggregation of Revenue [Line Items]
Net sales	6.6	5.5
Aerospace and Defense Electronics | U.S. Govt.
Disaggregation of Revenue [Line Items]
Net sales	64.7	59.9
Aerospace and Defense Electronics | Other
Disaggregation of Revenue [Line Items]
Net sales	108.5	106.3
Engineered Systems
Disaggregation of Revenue [Line Items]
Net sales	104.1	95.4
Engineered Systems | United States
Disaggregation of Revenue [Line Items]
Net sales	103.3	95.0
Engineered Systems | Europe
Disaggregation of Revenue [Line Items]
Net sales	0.0	0.0
Engineered Systems | Asia
Disaggregation of Revenue [Line Items]
Net sales	0.2	0.2
Engineered Systems | All other
Disaggregation of Revenue [Line Items]
Net sales	0.6	0.2
Engineered Systems | U.S. Govt.
Disaggregation of Revenue [Line Items]
Net sales	93.4	86.4
Engineered Systems | Other
Disaggregation of Revenue [Line Items]
Net sales	$ 10.7	$ 9.0