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Segments - Schedule of Assets by Segment (Details) - USD ($) $ in Millions	Jun. 29, 2024	Dec. 30, 2023
Segment Reporting Information [Line Items]
Assets	$ 7,759.9	$ 7,544.9
Total assets from reportable segments
Segment Reporting Information [Line Items]
Assets	6,341.0	6,345.5
Total assets from reportable segments | Commercial & Industrial Group
Segment Reporting Information [Line Items]
Assets	1,274.3	1,293.7
Total assets from reportable segments | Snap-on Tools Group
Segment Reporting Information [Line Items]
Assets	928.6	941.8
Total assets from reportable segments | Repair Systems & Information Group
Segment Reporting Information [Line Items]
Assets	1,661.5	1,680.0
Total assets from reportable segments | Financial Services
Segment Reporting Information [Line Items]
Assets	2,476.6	2,430.0
Corporate
Segment Reporting Information [Line Items]
Assets	1,508.9	1,285.0
Elimination of intersegment receivables
Segment Reporting Information [Line Items]
Assets	$ (90.0)	$ (85.6)

X

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Amount of asset recognized for present right to economic benefit.

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