Business Segments - Net Sales and Operating Income by Segment (Details) - USD ($) $ in Millions	3 Months Ended
	Apr. 02, 2023	Apr. 03, 2022
Net sales:
Total net sales	$ 1,383.3	$ 1,321.0
Net sales, percentage change	4.70%
Operating income:
Operating income	$ 242.5	223.5
Total segment operating profit, percentage change	8.50%
Net sales	$ (1,383.3)	(1,321.0)
Corporate expense
Operating income:
Operating income	$ (17.4)	(16.1)
Total segment operating profit, percentage change	8.10%
Inter-segment sales
Net sales:
Total net sales	$ (6.2)	(5.5)
Operating income:
Net sales	6.2	5.5
Digital Imaging
Net sales:
Total net sales	772.5	750.5
Operating income:
Net sales	(772.5)	(750.5)
Digital Imaging | Operating segments
Net sales:
Total net sales	$ 772.5	750.5
Net sales, percentage change	2.90%
Operating income:
Operating income	$ 122.2	115.7
Total segment operating profit, percentage change	5.60%
Net sales	$ (772.5)	(750.5)
Instrumentation
Net sales:
Total net sales	333.5	308.9
Operating income:
Net sales	(333.5)	(308.9)
Instrumentation | Operating segments
Net sales:
Total net sales	$ 333.5	308.9
Net sales, percentage change	8.00%
Operating income:
Operating income	$ 80.7	71.6
Total segment operating profit, percentage change	12.70%
Net sales	$ (333.5)	(308.9)
Aerospace and Defense Electronics
Net sales:
Total net sales	173.2	166.2
Operating income:
Net sales	(173.2)	(166.2)
Aerospace and Defense Electronics | Operating segments
Net sales:
Total net sales	$ 173.2	166.2
Net sales, percentage change	4.20%
Operating income:
Operating income	$ 47.0	42.9
Total segment operating profit, percentage change	9.60%
Net sales	$ (173.2)	(166.2)
Engineered Systems
Net sales:
Total net sales	104.1	95.4
Operating income:
Net sales	(104.1)	(95.4)
Engineered Systems | Operating segments
Net sales:
Total net sales	$ 104.1	95.4
Net sales, percentage change	9.10%
Operating income:
Operating income	$ 10.0	9.4
Total segment operating profit, percentage change	6.40%
Net sales	$ (104.1)	$ (95.4)