Revenue Recognition and Contract Balances - Schedule of Disaggregation of Revenue (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 28, 2026	Jun. 29, 2025	Jun. 28, 2026	Jun. 29, 2025
Disaggregation of Revenue [Line Items]
Net sales	$ 1,662.5	$ 1,513.7	$ 3,222.6	$ 2,963.6
United States
Disaggregation of Revenue [Line Items]
Net sales	844.4	767.5	1,662.9	1,536.8
Europe
Disaggregation of Revenue [Line Items]
Net sales	450.5	392.0	860.6	733.6
Asia
Disaggregation of Revenue [Line Items]
Net sales	223.0	217.8	432.9	439.6
All Other
Disaggregation of Revenue [Line Items]
Net sales	144.6	136.4	266.2	253.6
U.S. Govt.
Disaggregation of Revenue [Line Items]
Net sales	421.9	379.5	827.0	751.3
Other
Disaggregation of Revenue [Line Items]
Net sales	1,240.6	1,134.2	2,395.6	2,212.3
Digital Imaging
Disaggregation of Revenue [Line Items]
Net sales	868.7	771.0	1,685.6	1,528.0
Digital Imaging \| United States
Disaggregation of Revenue [Line Items]
Net sales	410.6	341.8	813.3	697.7
Digital Imaging \| Europe
Disaggregation of Revenue [Line Items]
Net sales	244.7	212.9	468.8	401.1
Digital Imaging \| Asia
Disaggregation of Revenue [Line Items]
Net sales	134.2	135.1	259.8	274.8
Digital Imaging \| All Other
Disaggregation of Revenue [Line Items]
Net sales	79.2	81.2	143.7	154.4
Digital Imaging \| U.S. Govt.
Disaggregation of Revenue [Line Items]
Net sales	185.6	141.3	371.0	303.0
Digital Imaging \| Other
Disaggregation of Revenue [Line Items]
Net sales	683.1	629.7	1,314.6	1,225.0
Instrumentation
Disaggregation of Revenue [Line Items]
Net sales	387.8	367.6	749.2	710.9
Instrumentation \| United States
Disaggregation of Revenue [Line Items]
Net sales	150.4	150.9	293.7	298.9
Instrumentation \| Europe
Disaggregation of Revenue [Line Items]
Net sales	127.7	113.9	241.5	216.4
Instrumentation \| Asia
Disaggregation of Revenue [Line Items]
Net sales	64.7	59.1	124.8	117.9
Instrumentation \| All Other
Disaggregation of Revenue [Line Items]
Net sales	45.0	43.7	89.2	77.7
Instrumentation \| U.S. Govt.
Disaggregation of Revenue [Line Items]
Net sales	34.8	32.6	65.6	59.9
Instrumentation \| Other
Disaggregation of Revenue [Line Items]
Net sales	353.0	335.0	683.6	651.0
Aerospace and Defense Electronics
Disaggregation of Revenue [Line Items]
Net sales	286.4	264.8	563.9	507.3
Aerospace and Defense Electronics \| United States
Disaggregation of Revenue [Line Items]
Net sales	165.0	166.1	334.3	325.2
Aerospace and Defense Electronics \| Europe
Disaggregation of Revenue [Line Items]
Net sales	78.1	65.2	150.3	116.1
Aerospace and Defense Electronics \| Asia
Disaggregation of Revenue [Line Items]
Net sales	23.4	22.7	47.5	45.7
Aerospace and Defense Electronics \| All Other
Disaggregation of Revenue [Line Items]
Net sales	19.9	10.8	31.8	20.3
Aerospace and Defense Electronics \| U.S. Govt.
Disaggregation of Revenue [Line Items]
Net sales	97.6	114.2	198.3	204.4
Aerospace and Defense Electronics \| Other
Disaggregation of Revenue [Line Items]
Net sales	188.8	150.6	365.6	302.9
Engineered Systems
Disaggregation of Revenue [Line Items]
Net sales	119.6	110.3	223.9	217.4
Engineered Systems \| United States
Disaggregation of Revenue [Line Items]
Net sales	118.4	108.7	221.6	215.0
Engineered Systems \| Europe
Disaggregation of Revenue [Line Items]
Net sales	0.0	0.0	0.0	0.0
Engineered Systems \| Asia
Disaggregation of Revenue [Line Items]
Net sales	0.7	0.9	0.8	1.2
Engineered Systems \| All Other
Disaggregation of Revenue [Line Items]
Net sales	0.5	0.7	1.5	1.2
Engineered Systems \| U.S. Govt.
Disaggregation of Revenue [Line Items]
Net sales	103.9	91.4	192.1	184.0
Engineered Systems \| Other
Disaggregation of Revenue [Line Items]
Net sales	$ 15.7	$ 18.9	$ 31.8	$ 33.4