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Segments - Assets by Segment (Detail) - USD ($) $ in Millions | Mar. 28, 2020 | Dec. 28, 2019
--- | --- | ---
Segment Reporting Information [Line Items] |  |
Assets | $ 5,564.3 | $ 5,693.5
Operating Segments |  |
Segment Reporting Information [Line Items] |  |
Assets | 5,314.8 | 5,452.1
Operating Segments | Commercial & Industrial Group |  |
Segment Reporting Information [Line Items] |  |
Assets | 1,079.0 | 1,138.8
Operating Segments | Snap-on Tools Group |  |
Segment Reporting Information [Line Items] |  |
Assets | 813.7 | 827.4
Operating Segments | Repair Systems & Information Group |  |
Segment Reporting Information [Line Items] |  |
Assets | 1,346.1 | 1,381.9
Operating Segments | Financial Services |  |
Segment Reporting Information [Line Items] |  |
Assets | 2,076.0 | 2,104.0
Corporate |  |
Segment Reporting Information [Line Items] |  |
Assets | 303.8 | 303.1
Elimination of intersegment receivables |  |
Segment Reporting Information [Line Items] |  |
Assets | $ (54.3) | $ (61.7)

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