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Segments - Capital Expenditures, Depreciation and Amortization (Detail) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 28, 2019 | Dec. 29, 2018 | Dec. 30, 2017
Segment Reporting Information [Line Items] |  |  |
Capital expenditures | $ 99.4 | $ 90.9 | $ 82.0
Depreciation and amortization | 92.4 | 94.1 | 93.2
Operating Segments |  |  |
Segment Reporting Information [Line Items] |  |  |
Capital expenditures | 96.3 | 87.7 | 77.3
Depreciation and amortization | 88.9 | 91.0 | 90.3
Operating Segments | Commercial & Industrial Group |  |  |
Segment Reporting Information [Line Items] |  |  |
Capital expenditures | 30.1 | 21.5 | 22.6
Depreciation and amortization | 23.5 | 23.6 | 22.8
Operating Segments | Snap-on Tools Group |  |  |
Segment Reporting Information [Line Items] |  |  |
Capital expenditures | 42.7 | 46.0 | 40.1
Depreciation and amortization | 31.7 | 29.9 | 29.1
Operating Segments | Repair Systems & Information Group |  |  |
Segment Reporting Information [Line Items] |  |  |
Capital expenditures | 22.7 | 19.7 | 13.4
Depreciation and amortization | 33.0 | 36.7 | 37.8
Operating Segments | Financial Services |  |  |
Segment Reporting Information [Line Items] |  |  |
Capital expenditures | 0.8 | 0.5 | 1.2
Depreciation and amortization | 0.7 | 0.8 | 0.6
Corporate |  |  |
Segment Reporting Information [Line Items] |  |  |
Capital expenditures | 3.1 | 3.2 | 4.7
Depreciation and amortization | $ 3.5 | $ 3.1 | $ 2.9

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