Revenue Recognition and Contract Balances - Schedule of Disaggregation of Revenue (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 28, 2025	Sep. 29, 2024	Sep. 28, 2025	Sep. 29, 2024
Disaggregation of Revenue [Line Items]
Net sales	$ 1,539.5	$ 1,443.5	$ 4,503.1	$ 4,167.7
United States
Disaggregation of Revenue [Line Items]
Net sales	815.3	775.0	2,352.1	2,187.4
Europe
Disaggregation of Revenue [Line Items]
Net sales	373.9	341.8	1,107.5	990.9
Asia
Disaggregation of Revenue [Line Items]
Net sales	229.2	218.0	668.8	649.8
All Other
Disaggregation of Revenue [Line Items]
Net sales	121.1	108.7	374.7	339.6
U.S. Govt.
Disaggregation of Revenue [Line Items]
Net sales	397.0	359.4	1,148.3	970.2
Other
Disaggregation of Revenue [Line Items]
Net sales	1,142.5	1,084.1	3,354.8	3,197.5
Digital Imaging
Disaggregation of Revenue [Line Items]
Net sales	785.4	768.4	2,313.4	2,248.6
Digital Imaging | United States
Disaggregation of Revenue [Line Items]
Net sales	372.5	361.2	1,070.2	1,020.2
Digital Imaging | Europe
Disaggregation of Revenue [Line Items]
Net sales	198.9	208.4	600.0	610.4
Digital Imaging | Asia
Disaggregation of Revenue [Line Items]
Net sales	137.9	131.7	412.7	402.4
Digital Imaging | All Other
Disaggregation of Revenue [Line Items]
Net sales	76.1	67.1	230.5	215.6
Digital Imaging | U.S. Govt.
Disaggregation of Revenue [Line Items]
Net sales	173.5	146.8	476.5	399.8
Digital Imaging | Other
Disaggregation of Revenue [Line Items]
Net sales	611.9	621.6	1,836.9	1,848.8
Instrumentation
Disaggregation of Revenue [Line Items]
Net sales	363.6	349.8	1,074.5	1,013.7
Instrumentation | United States
Disaggregation of Revenue [Line Items]
Net sales	159.5	155.0	458.4	453.0
Instrumentation | Europe
Disaggregation of Revenue [Line Items]
Net sales	103.3	98.0	319.7	277.5
Instrumentation | Asia
Disaggregation of Revenue [Line Items]
Net sales	66.7	65.1	184.6	187.1
Instrumentation | All Other
Disaggregation of Revenue [Line Items]
Net sales	34.1	31.7	111.8	96.1
Instrumentation | U.S. Govt.
Disaggregation of Revenue [Line Items]
Net sales	37.4	29.6	97.3	92.3
Instrumentation | Other
Disaggregation of Revenue [Line Items]
Net sales	326.2	320.2	977.2	921.4
Aerospace and Defense Electronics
Disaggregation of Revenue [Line Items]
Net sales	275.5	200.2	782.8	580.3
Aerospace and Defense Electronics | United States
Disaggregation of Revenue [Line Items]
Net sales	169.8	135.2	495.0	391.8
Aerospace and Defense Electronics | Europe
Disaggregation of Revenue [Line Items]
Net sales	71.7	35.4	187.8	103.0
Aerospace and Defense Electronics | Asia
Disaggregation of Revenue [Line Items]
Net sales	24.0	20.5	69.7	59.2
Aerospace and Defense Electronics | All Other
Disaggregation of Revenue [Line Items]
Net sales	10.0	9.1	30.3	26.3
Aerospace and Defense Electronics | U.S. Govt.
Disaggregation of Revenue [Line Items]
Net sales	88.9	69.3	293.3	188.9
Aerospace and Defense Electronics | Other
Disaggregation of Revenue [Line Items]
Net sales	186.6	130.9	489.5	391.4
Engineered Systems
Disaggregation of Revenue [Line Items]
Net sales	115.0	125.1	332.4	325.1
Engineered Systems | United States
Disaggregation of Revenue [Line Items]
Net sales	113.5	123.6	328.5	322.4
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	0.6	0.7	1.8	1.1
Engineered Systems | All Other
Disaggregation of Revenue [Line Items]
Net sales	0.9	0.8	2.1	1.6
Engineered Systems | U.S. Govt.
Disaggregation of Revenue [Line Items]
Net sales	97.2	113.7	281.2	289.2
Engineered Systems | Other
Disaggregation of Revenue [Line Items]
Net sales	$ 17.8	$ 11.4	$ 51.2	$ 35.9