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Segments - Capital Expenditures, Depreciation and Amortization (Detail) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 28, 2024 | Dec. 30, 2023 | Dec. 31, 2022
Segment Reporting Information [Line Items] |  |  |
Capital expenditures | $ 83.5 | $ 95.0 | $ 84.2
Depreciation and amortization | 98.0 | 99.3 | 100.2
Operating Segments |  |  |
Segment Reporting Information [Line Items] |  |  |
Capital expenditures | 81.8 | 90.7 | 80.4
Depreciation and amortization | 93.8 | 95.3 | 96.4
Operating Segments | Commercial & Industrial Group |  |  |
Segment Reporting Information [Line Items] |  |  |
Capital expenditures | 19.4 | 22.5 | 26.0
Depreciation and amortization | 25.3 | 25.7 | 26.1
Operating Segments | Snap-on Tools Group |  |  |
Segment Reporting Information [Line Items] |  |  |
Capital expenditures | 39.6 | 46.1 | 35.0
Depreciation and amortization | 30.5 | 29.3 | 29.3
Operating Segments | Repair Systems & Information Group |  |  |
Segment Reporting Information [Line Items] |  |  |
Capital expenditures | 22.2 | 20.3 | 18.3
Depreciation and amortization | 37.0 | 39.4 | 40.1
Operating Segments | Financial Services |  |  |
Segment Reporting Information [Line Items] |  |  |
Capital expenditures | 0.6 | 1.8 | 1.1
Depreciation and amortization | 1.0 | 0.9 | 0.9
Corporate |  |  |
Segment Reporting Information [Line Items] |  |  |
Capital expenditures | 1.7 | 4.3 | 3.8
Depreciation and amortization | $ 4.2 | $ 4.0 | $ 3.8

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