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Segments - Products and Services (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 28, 2024	Dec. 30, 2023	Dec. 31, 2022
Revenue from External Customer [Line Items]
Net sales	$ 5,108.4	$ 5,108.3	$ 4,842.5
Total net sales
Revenue from External Customer [Line Items]
Net sales	4,707.4	4,730.2	4,492.8
Total net sales | Tools
Revenue from External Customer [Line Items]
Net sales	2,546.2	2,528.9	2,399.4
Total net sales | Diagnostics, information and management systems
Revenue from External Customer [Line Items]
Net sales	1,028.1	991.2	942.4
Total net sales | Equipment
Revenue from External Customer [Line Items]
Net sales	1,133.1	1,210.1	1,151.0
Financial Services
Revenue from External Customer [Line Items]
Net sales	$ 401.0	$ 378.1	$ 349.7

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