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Segments - Capital Expenditures, Depreciation and Amortization (Detail) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 30, 2023 | Dec. 31, 2022 | Jan. 01, 2022
Segment Reporting Information [Line Items] |  |  |
Capital expenditures | $ 95.0 | $ 84.2 | $ 70.1
Depreciation and amortization | 99.3 | 100.2 | 104.8
Operating Segments |  |  |
Segment Reporting Information [Line Items] |  |  |
Capital expenditures | 90.7 | 80.4 | 67.6
Depreciation and amortization | 95.3 | 96.4 | 101.2
Operating Segments | Commercial & Industrial Group |  |  |
Segment Reporting Information [Line Items] |  |  |
Capital expenditures | 22.5 | 26.0 | 24.3
Depreciation and amortization | 25.7 | 26.1 | 28.2
Operating Segments | Snap-on Tools Group |  |  |
Segment Reporting Information [Line Items] |  |  |
Capital expenditures | 46.1 | 35.0 | 27.1
Depreciation and amortization | 29.3 | 29.3 | 31.2
Operating Segments | Repair Systems & Information Group |  |  |
Segment Reporting Information [Line Items] |  |  |
Capital expenditures | 20.3 | 18.3 | 15.4
Depreciation and amortization | 39.4 | 40.1 | 40.9
Operating Segments | Financial Services |  |  |
Segment Reporting Information [Line Items] |  |  |
Capital expenditures | 1.8 | 1.1 | 0.8
Depreciation and amortization | 0.9 | 0.9 | 0.9
Corporate |  |  |
Segment Reporting Information [Line Items] |  |  |
Capital expenditures | 4.3 | 3.8 | 2.5
Depreciation and amortization | $ 4.0 | $ 3.8 | $ 3.6

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