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Revenue Recognition - Revenue Disaggregation (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2023 | Oct. 01, 2022 | Sep. 30, 2023 | Oct. 01, 2022
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue from contracts with customers | $ 1,152.2 | $ 1,096.3 | $ 3,513.3 | $ 3,318.7
Net sales | 1,254.2 | 1,189.8 | 3,814.5 | 3,598.3
Intersegment eliminations |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | (154.3) | (164.9) | (466.7) | (477.4)
Commercial & Industrial Group | Total assets from reportable segments |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | 366.4 | 356.8 | 1,094.4 | 1,056.0
Snap-on Tools Group | Total assets from reportable segments |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | 515.4 | 496.6 | 1,575.5 | 1,529.3
Repair Systems & Information Group | Total assets from reportable segments |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | 431.8 | 414.0 | 1,330.4 | 1,229.0
Financial Services | Total assets from reportable segments |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | 94.9 | 87.3 | 280.9 | 261.4
Other revenues |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | 7.1 | 6.2 | 20.3 | 18.2
Total net sales |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | 1,159.3 | 1,102.5 | 3,533.6 | 3,336.9
Total net sales | External Sales |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | 1,159.3 | 1,102.5 | 3,533.6 | 3,336.9
Total net sales | Vehicle service professionals | External Sales |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | 898.2 | 860.5 | 2,746.9 | 2,606.7
Total net sales | All other professionals | External Sales |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | 261.1 | 242.0 | 786.7 | 730.2
Total net sales | Total assets from reportable segments |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | 1,313.6 | 1,267.4 | 4,000.3 | 3,814.3
Total net sales | Intersegment eliminations |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | (154.3) | (164.9) | (466.7) | (477.4)
Total net sales | Commercial & Industrial Group | Total assets from reportable segments |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | 366.4 | 356.8 | 1,094.4 | 1,056.0
Total net sales | Commercial & Industrial Group | Total assets from reportable segments | External Sales |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | 280.5 | 262.8 | 848.9 | 800.1
Total net sales | Commercial & Industrial Group | Total assets from reportable segments | Vehicle service professionals | External Sales |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | 19.4 | 20.8 | 62.2 | 69.9
Total net sales | Commercial & Industrial Group | Total assets from reportable segments | All other professionals | External Sales |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | 261.1 | 242.0 | 786.7 | 730.2
Total net sales | Commercial & Industrial Group | Intersegment eliminations |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | 85.9 | 94.0 | 245.5 | 255.9
Total net sales | Snap-on Tools Group | Total assets from reportable segments |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | 515.4 | 496.6 | 1,575.5 | 1,529.3
Total net sales | Snap-on Tools Group | Total assets from reportable segments | External Sales |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | 515.4 | 496.6 | 1,575.5 | 1,529.3
Total net sales | Snap-on Tools Group | Total assets from reportable segments | Vehicle service professionals | External Sales |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | 515.4 | 496.6 | 1,575.5 | 1,529.3
Total net sales | Snap-on Tools Group | Total assets from reportable segments | All other professionals | External Sales |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | 0.0 | 0.0 | 0.0 | 0.0
Total net sales | Snap-on Tools Group | Intersegment eliminations |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | 0.0 | 0.0 | 0.0 | 0.0
Total net sales | Repair Systems & Information Group | Total assets from reportable segments |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | 431.8 | 414.0 | 1,330.4 | 1,229.0
Total net sales | Repair Systems & Information Group | Total assets from reportable segments | External Sales |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | 363.4 | 343.1 | 1,109.2 | 1,007.5
Total net sales | Repair Systems & Information Group | Total assets from reportable segments | Vehicle service professionals | External Sales |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | 363.4 | 343.1 | 1,109.2 | 1,007.5
Total net sales | Repair Systems & Information Group | Total assets from reportable segments | All other professionals | External Sales |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | 0.0 | 0.0 | 0.0 | 0.0
Total net sales | Repair Systems & Information Group | Intersegment eliminations |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | 68.4 | 70.9 | 221.2 | 221.5
Total net sales | Financial Services | Total assets from reportable segments |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | 0.0 | 0.0 | 0.0 | 0.0
Total net sales | Financial Services | Total assets from reportable segments | External Sales |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | 0.0 | 0.0 | 0.0 | 0.0
Total net sales | Financial Services | Total assets from reportable segments | Vehicle service professionals | External Sales |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | 0.0 | 0.0 | 0.0 | 0.0
Total net sales | Financial Services | Total assets from reportable segments | All other professionals | External Sales |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | 0.0 | 0.0 | 0.0 | 0.0
Total net sales | Financial Services | Intersegment eliminations |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | 0.0 | 0.0 | 0.0 | 0.0
Total net sales | North America | External Sales |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | 879.8 | 837.6 | 2,662.6 | 2,485.6
Total net sales | North America | Commercial & Industrial Group | Total assets from reportable segments | External Sales |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | 146.4 | 128.2 | 428.3 | 370.6
Total net sales | North America | Snap-on Tools Group | Total assets from reportable segments | External Sales |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | 451.4 | 440.6 | 1,384.6 | 1,348.7
Total net sales | North America | Repair Systems & Information Group | Total assets from reportable segments | External Sales |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | 282.0 | 268.8 | 849.7 | 766.3
Total net sales | North America | Financial Services | Total assets from reportable segments | External Sales |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | 0.0 | 0.0 | 0.0 | 0.0
Total net sales | Europe | External Sales |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | 161.1 | 143.7 | 513.1 | 497.4
Total net sales | Europe | Commercial & Industrial Group | Total assets from reportable segments | External Sales |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | 69.6 | 62.0 | 220.1 | 216.9
Total net sales | Europe | Snap-on Tools Group | Total assets from reportable segments | External Sales |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | 37.5 | 29.8 | 112.2 | 106.3
Total net sales | Europe | Repair Systems & Information Group | Total assets from reportable segments | External Sales |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | 54.0 | 51.9 | 180.8 | 174.2
Total net sales | Europe | Financial Services | Total assets from reportable segments | External Sales |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | 0.0 | 0.0 | 0.0 | 0.0
Total net sales | All other | External Sales |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | 118.4 | 121.2 | 357.9 | 353.9
Total net sales | All other | Commercial & Industrial Group | Total assets from reportable segments | External Sales |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | 64.5 | 72.6 | 200.5 | 212.6
Total net sales | All other | Snap-on Tools Group | Total assets from reportable segments | External Sales |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | 26.5 | 26.2 | 78.7 | 74.3
Total net sales | All other | Repair Systems & Information Group | Total assets from reportable segments | External Sales |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | 27.4 | 22.4 | 78.7 | 67.0
Total net sales | All other | Financial Services | Total assets from reportable segments | External Sales |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | 0.0 | 0.0 | 0.0 | 0.0
Financial services revenue |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | 94.9 | 87.3 | 280.9 | 261.4
Financial services revenue | Intersegment eliminations |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | 0.0 | 0.0 | 0.0 | 0.0
Financial services revenue | Commercial & Industrial Group | Total assets from reportable segments |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | 0.0 | 0.0 | 0.0 | 0.0
Financial services revenue | Snap-on Tools Group | Total assets from reportable segments |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | 0.0 | 0.0 | 0.0 | 0.0
Financial services revenue | Repair Systems & Information Group | Total assets from reportable segments |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | 0.0 | 0.0 | 0.0 | 0.0
Financial services revenue | Financial Services |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | 94.9 | 87.3 | 280.9 | 261.4
Financial services revenue | Financial Services | Total assets from reportable segments |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | $ 94.9 | $ 87.3 | $ 280.9 | $ 261.4

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