Segment Information - Disaggregation of Revenue (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Oct. 02, 2022	Oct. 03, 2021	Oct. 02, 2022	Oct. 03, 2021
Disaggregation of Revenue [Line Items]
Net sales	$ 1,363.6	$ 1,311.9	$ 4,040.4	$ 3,238.6
United States
Disaggregation of Revenue [Line Items]
Net sales	855.0	833.6	2,544.7	2,066.5
Europe
Disaggregation of Revenue [Line Items]
Net sales	295.6	283.6	862.4	689.2
All other
Disaggregation of Revenue [Line Items]
Net sales	213.0	194.7	633.3	482.9
United States Government
Disaggregation of Revenue [Line Items]
Net sales	347.7	357.6	1,001.2	842.1
Other, Primarily Commercial
Disaggregation of Revenue [Line Items]
Net sales	1,015.9	954.3	3,039.2	2,396.5
Digital Imaging
Disaggregation of Revenue [Line Items]
Net sales	777.9	760.6	2,304.2	1,603.4
Digital Imaging | United States
Disaggregation of Revenue [Line Items]
Net sales	365.6	383.0	1,102.4	729.0
Digital Imaging | Europe
Disaggregation of Revenue [Line Items]
Net sales	215.6	198.4	620.9	433.7
Digital Imaging | All other
Disaggregation of Revenue [Line Items]
Net sales	196.7	179.2	580.9	440.7
Digital Imaging | United States Government
Disaggregation of Revenue [Line Items]
Net sales	156.3	182.3	463.4	327.2
Digital Imaging | Other, Primarily Commercial
Disaggregation of Revenue [Line Items]
Net sales	621.6	578.3	1,840.8	1,276.2
Instrumentation
Disaggregation of Revenue [Line Items]
Net sales	306.4	287.1	927.8	864.7
Instrumentation | United States
Disaggregation of Revenue [Line Items]
Net sales	234.5	213.5	708.1	645.3
Instrumentation | Europe
Disaggregation of Revenue [Line Items]
Net sales	55.6	58.1	167.3	177.2
Instrumentation | All other
Disaggregation of Revenue [Line Items]
Net sales	16.3	15.5	52.4	42.2
Instrumentation | United States Government
Disaggregation of Revenue [Line Items]
Net sales	29.5	22.8	79.1	66.2
Instrumentation | Other, Primarily Commercial
Disaggregation of Revenue [Line Items]
Net sales	276.9	264.3	848.7	798.5
Aerospace and Defense Electronics
Disaggregation of Revenue [Line Items]
Net sales	169.5	161.8	504.5	465.4
Aerospace and Defense Electronics | United States
Disaggregation of Revenue [Line Items]
Net sales	145.1	134.7	430.3	387.1
Aerospace and Defense Electronics | Europe
Disaggregation of Revenue [Line Items]
Net sales	24.4	27.1	74.2	78.3
Aerospace and Defense Electronics | All other
Disaggregation of Revenue [Line Items]
Net sales	0.0	0.0	0.0	0.0
Aerospace and Defense Electronics | United States Government
Disaggregation of Revenue [Line Items]
Net sales	62.8	60.4	184.3	169.0
Aerospace and Defense Electronics | Other, Primarily Commercial
Disaggregation of Revenue [Line Items]
Net sales	106.7	101.4	320.2	296.4
Engineered Systems
Disaggregation of Revenue [Line Items]
Net sales	109.8	102.4	303.9	305.1
Engineered Systems | United States
Disaggregation of Revenue [Line Items]
Net sales	109.8	102.4	303.9	305.1
Engineered Systems | Europe
Disaggregation of Revenue [Line Items]
Net sales	0.0	0.0	0.0	0.0
Engineered Systems | All other
Disaggregation of Revenue [Line Items]
Net sales	0.0	0.0	0.0	0.0
Engineered Systems | United States Government
Disaggregation of Revenue [Line Items]
Net sales	99.1	92.1	274.4	279.7
Engineered Systems | Other, Primarily Commercial
Disaggregation of Revenue [Line Items]
Net sales	$ 10.7	$ 10.3	$ 29.5	$ 25.4