Business Segments - Schedule of Net Sales and Operating Income by Segment (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jul. 02, 2023	Jun. 30, 2024	Jul. 02, 2023
Net sales:
Total net sales	$ 1,374.1	$ 1,424.7	$ 2,724.2	$ 2,808.0
Net sales, percentage change	(3.60%)		(3.00%)
Operating income:
Operating income	$ 247.0	256.1	$ 481.3	498.6
Total segment operating profit, percentage change	(3.60%)		(3.50%)
Net sales	$ (1,374.1)	(1,424.7)	$ (2,724.2)	(2,808.0)
Corporate expense
Operating income:
Operating income	$ (18.3)	(14.6)	$ (38.4)	(32.0)
Total segment operating profit, percentage change	25.30%		20.00%
Inter-segment sales
Net sales:
Total net sales	$ (8.5)	(8.1)	$ (13.3)	(14.3)
Operating income:
Net sales	8.5	8.1	13.3	14.3
Digital Imaging
Net sales:
Total net sales	739.4	793.3	1,480.2	1,565.8
Operating income:
Net sales	(739.4)	(793.3)	(1,480.2)	(1,565.8)
Digital Imaging | Operating segments
Net sales:
Total net sales	$ 739.4	793.3	$ 1,480.2	1,565.8
Net sales, percentage change	(6.80%)		(5.50%)
Operating income:
Operating income	$ 113.5	124.6	$ 227.3	246.8
Total segment operating profit, percentage change	(8.90%)		(7.90%)
Net sales	$ (739.4)	(793.3)	$ (1,480.2)	(1,565.8)
Instrumentation
Net sales:
Total net sales	333.5	328.4	663.9	661.9
Operating income:
Net sales	(333.5)	(328.4)	(663.9)	(661.9)
Instrumentation | Operating segments
Net sales:
Total net sales	$ 333.5	328.4	$ 663.9	661.9
Net sales, percentage change	1.60%		0.30%
Operating income:
Operating income	$ 87.2	81.4	$ 173.2	162.1
Total segment operating profit, percentage change	7.10%		6.80%
Net sales	$ (333.5)	(328.4)	$ (663.9)	(661.9)
Aerospace and Defense Electronics
Net sales:
Total net sales	194.4	186.0	380.1	359.2
Operating income:
Net sales	(194.4)	(186.0)	(380.1)	(359.2)
Aerospace and Defense Electronics | Operating segments
Net sales:
Total net sales	$ 194.4	186.0	$ 380.1	359.2
Net sales, percentage change	4.50%		5.80%
Operating income:
Operating income	$ 57.1	53.2	$ 109.0	100.2
Total segment operating profit, percentage change	7.30%		8.80%
Net sales	$ (194.4)	(186.0)	$ (380.1)	(359.2)
Engineered Systems
Net sales:
Total net sales	106.8	117.0	200.0	221.1
Operating income:
Net sales	(106.8)	(117.0)	(200.0)	(221.1)
Engineered Systems | Operating segments
Net sales:
Total net sales	$ 106.8	117.0	$ 200.0	221.1
Net sales, percentage change	(8.70%)		(9.50%)
Operating income:
Operating income	$ 7.5	11.5	$ 10.2	21.5
Total segment operating profit, percentage change	(34.80%)		(52.60%)
Net sales	$ (106.8)	$ (117.0)	$ (200.0)	$ (221.1)