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Revenue Recognition - Revenue Disaggregation (Details) - USD ($) $ in Millions | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 28, 2019 | Sep. 28, 2019 | Jun. 29, 2019 | Mar. 30, 2019 | Dec. 29, 2018 | Sep. 29, 2018 | Jun. 30, 2018 | Mar. 31, 2018 | Dec. 28, 2019 | Dec. 29, 2018 | Dec. 30, 2017
Disaggregation of Revenue [Line Items] |  |  |  |  |  |  |  |  |  |  |
Revenue from contracts with customers |  |  |  |  |  |  |  |  | $ 3,708.3 | $ 3,719.6 |
Net sales |  |  |  |  |  |  |  |  | 4,067.7 | 4,070.4 | $ 4,000.3
Europe |  |  |  |  |  |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  | 730.3 | 784.7 | 748.8
Commercial & Industrial Group |  |  |  |  |  |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  | 1,345.7 | 1,343.3 |
Snap-on Tools Group |  |  |  |  |  |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  | 1,612.9 | 1,613.8 |
Repair Systems & Information Group |  |  |  |  |  |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  | 1,334.5 | 1,334.4 |
Financial Services |  |  |  |  |  |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  | 337.7 | 329.7 |
Intersegment eliminations |  |  |  |  |  |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  | (563.1) | (550.8) |
Product and Service, Other |  |  |  |  |  |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |  |  |  |  |  |
Revenue not from contract with customer |  |  |  |  |  |  |  |  | 21.7 | 21.1 |
Product And Services, Excluding Financial Services |  |  |  |  |  |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net sales | $ 955.2 | $ 901.8 | $ 951.3 | $ 921.7 | $ 952.5 | $ 898.1 | $ 954.6 | $ 935.5 | 3,730.0 | 3,740.7 | 3,686.9
Product And Services, Excluding Financial Services | Vehicle service professionals |  |  |  |  |  |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  | 2,777.3 | 2,780.2 |
Product And Services, Excluding Financial Services | All other professionals |  |  |  |  |  |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  | 952.7 | 960.5 |
Product And Services, Excluding Financial Services | North America |  |  |  |  |  |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  | 2,654.6 | 2,592.3 |
Product And Services, Excluding Financial Services | Europe |  |  |  |  |  |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  | 664.9 | 718.4 |
Product And Services, Excluding Financial Services | All other |  |  |  |  |  |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  | 410.5 | 430.0 |
Product And Services, Excluding Financial Services | Commercial & Industrial Group |  |  |  |  |  |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  | 1,038.2 | 1,051.6 |
Product And Services, Excluding Financial Services | Commercial & Industrial Group | Vehicle service professionals |  |  |  |  |  |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  | 85.5 | 91.1 |
Product And Services, Excluding Financial Services | Commercial & Industrial Group | All other professionals |  |  |  |  |  |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  | 952.7 | 960.5 |
Product And Services, Excluding Financial Services | Commercial & Industrial Group | North America |  |  |  |  |  |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  | 482.1 | 466.5 |
Product And Services, Excluding Financial Services | Commercial & Industrial Group | Europe |  |  |  |  |  |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  | 291.7 | 311.9 |
Product And Services, Excluding Financial Services | Commercial & Industrial Group | All other |  |  |  |  |  |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  | 264.4 | 273.2 |
Product And Services, Excluding Financial Services | Snap-on Tools Group |  |  |  |  |  |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  | 1,612.9 | 1,613.8 |
Product And Services, Excluding Financial Services | Snap-on Tools Group | Vehicle service professionals |  |  |  |  |  |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  | 1,612.9 | 1,613.8 |
Product And Services, Excluding Financial Services | Snap-on Tools Group | All other professionals |  |  |  |  |  |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  | 0.0 | 0.0 |
Product And Services, Excluding Financial Services | Snap-on Tools Group | North America |  |  |  |  |  |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  | 1,406.1 | 1,378.7 |
Product And Services, Excluding Financial Services | Snap-on Tools Group | Europe |  |  |  |  |  |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  | 131.9 | 151.3 |
Product And Services, Excluding Financial Services | Snap-on Tools Group | All other |  |  |  |  |  |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  | 74.9 | 83.8 |
Product And Services, Excluding Financial Services | Repair Systems & Information Group |  |  |  |  |  |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  | 1,078.9 | 1,075.3 |
Product And Services, Excluding Financial Services | Repair Systems & Information Group | Vehicle service professionals |  |  |  |  |  |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  | 1,078.9 | 1,075.3 |
Product And Services, Excluding Financial Services | Repair Systems & Information Group | All other professionals |  |  |  |  |  |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  | 0.0 | 0.0 |
Product And Services, Excluding Financial Services | Repair Systems & Information Group | North America |  |  |  |  |  |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  | 766.4 | 747.1 |
Product And Services, Excluding Financial Services | Repair Systems & Information Group | Europe |  |  |  |  |  |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  | 241.3 | 255.2 |
Product And Services, Excluding Financial Services | Repair Systems & Information Group | All other |  |  |  |  |  |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  | 71.2 | 73.0 |
Product And Services, Excluding Financial Services | Financial Services |  |  |  |  |  |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  | 0.0 | 0.0 |
Product And Services, Excluding Financial Services | Financial Services | Vehicle service professionals |  |  |  |  |  |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  | 0.0 | 0.0 |
Product And Services, Excluding Financial Services | Financial Services | All other professionals |  |  |  |  |  |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  | 0.0 | 0.0 |
Product And Services, Excluding Financial Services | Financial Services | North America |  |  |  |  |  |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  | 0.0 | 0.0 |
Product And Services, Excluding Financial Services | Financial Services | Europe |  |  |  |  |  |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  | 0.0 | 0.0 |
Product And Services, Excluding Financial Services | Financial Services | All other |  |  |  |  |  |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  | 0.0 | 0.0 |
Product And Services, Excluding Financial Services | Intersegment eliminations |  |  |  |  |  |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  | (563.1) | (550.8) | (550.4)
Product And Services, Excluding Financial Services | Intersegment eliminations | Commercial & Industrial Group |  |  |  |  |  |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  | 307.5 | 291.7 |
Product And Services, Excluding Financial Services | Intersegment eliminations | Snap-on Tools Group |  |  |  |  |  |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  | 0.0 | 0.0 |
Product And Services, Excluding Financial Services | Intersegment eliminations | Repair Systems & Information Group |  |  |  |  |  |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  | 255.6 | 259.1 |
Product And Services, Excluding Financial Services | Intersegment eliminations | Financial Services |  |  |  |  |  |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  | 0.0 | 0.0 |
Product And Services, Excluding Financial Services | Operating Segments |  |  |  |  |  |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  | 4,293.1 | 4,291.5 | 4,237.3
Product And Services, Excluding Financial Services | Operating Segments | Commercial & Industrial Group |  |  |  |  |  |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  | 1,345.7 | 1,343.3 | 1,265.0
Product And Services, Excluding Financial Services | Operating Segments | Snap-on Tools Group |  |  |  |  |  |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  | 1,612.9 | 1,613.8 | 1,625.1
Product And Services, Excluding Financial Services | Operating Segments | Repair Systems & Information Group |  |  |  |  |  |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  | 1,334.5 | 1,334.4 | 1,347.2
Product And Services, Excluding Financial Services | Operating Segments | Financial Services |  |  |  |  |  |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  | 0.0 | 0.0 |
Financial Service |  |  |  |  |  |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |  |  |  |  |  |
Revenue not from contract with customer |  |  |  |  |  |  |  |  | 337.7 | 329.7 |
Net sales | $ 83.9 | $ 84.1 | $ 84.1 | $ 85.6 | $ 82.7 | $ 82.0 | $ 82.0 | $ 83.0 | 337.7 | 329.7 | $ 313.4
Financial Service | Commercial & Industrial Group |  |  |  |  |  |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  | 0.0 | 0.0 |
Financial Service | Snap-on Tools Group |  |  |  |  |  |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  | 0.0 | 0.0 |
Financial Service | Repair Systems & Information Group |  |  |  |  |  |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  | 0.0 | 0.0 |
Financial Service | Financial Services |  |  |  |  |  |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  | $ 337.7 | $ 329.7 |

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