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Segments - Schedule of Assets by Segment (Details) - USD ($) $ in Millions	Sep. 28, 2024	Dec. 30, 2023
Segment Reporting Information [Line Items]
Assets	$ 7,953.3	$ 7,544.9
Operating Segments
Segment Reporting Information [Line Items]
Assets	6,445.9	6,345.5
Operating Segments | Commercial & Industrial Group
Segment Reporting Information [Line Items]
Assets	1,293.0	1,293.7
Operating Segments | Snap-on Tools Group
Segment Reporting Information [Line Items]
Assets	986.2	941.8
Operating Segments | Repair Systems & Information Group
Segment Reporting Information [Line Items]
Assets	1,661.3	1,680.0
Operating Segments | Financial Services
Segment Reporting Information [Line Items]
Assets	2,505.4	2,430.0
Corporate
Segment Reporting Information [Line Items]
Assets	1,602.5	1,285.0
Elimination of intersegment receivables
Segment Reporting Information [Line Items]
Assets	$ (95.1)	$ (85.6)

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Amount of asset recognized for present right to economic benefit.

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