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Goodwill and Other Intangible Assets (Tables) | 3 Months Ended
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Apr. 04, 2026
Goodwill and Intangible Assets Disclosure [Abstract] |
Schedule of Changes in Carrying Amount of Goodwill by Segment | The changes in the carrying amount of goodwill by segment for the three months ended April 4, 2026, are as follows:
(Amounts in millions) | Commercial & Industrial Group |  | Snap-on Tools Group |  | Repair Systems & Information Group |  | Total
Balance as of January 3, 2026 | $ | 349.4 |  |  | $ | 12.4 |  |  | $ | 747.7 |  |  | $ | 1,109.5 |
Currency translation | (5.8) |  |  | — |  |  | (3.7) |  |  | (9.5) |
Acquisition | 2.1 |  |  | — |  |  | — |  |  | 2.1 |
Balance as of April 4, 2026 | $ | 345.7 |  |  | $ | 12.4 |  |  | $ | 744.0 |  |  | $ | 1,102.1 |
Schedule of Other Intangible Assets by Major Class | Additional disclosures related to other intangible assets are as follows:
| April 4, 2026 |  | January 3, 2026
(Amounts in millions) | Gross Carrying Value |  | Accumulated Amortization |  | Net Carrying Value |  | Gross Carrying Value |  | Accumulated Amortization |  | Net Carrying Value
Amortized other intangible assets: |  |  |  |  |  |  |  |  |  |  |
Customer relationships | $ | 79.0 |  |  | $ | (35.6) |  |  | $ | 43.4 |  |  | $ | 79.8 |  |  | $ | (34.7) |  |  | $ | 45.1 |
Developed technology | 26.4 |  |  | (26.4) |  |  | — |  |  | 26.5 |  |  | (26.0) |  |  | 0.5 |
Internally developed software | 203.0 |  |  | (149.3) |  |  | 53.7 |  |  | 200.8 |  |  | (146.5) |  |  | 54.3 |
Patents | 55.3 |  |  | (23.8) |  |  | 31.5 |  |  | 54.0 |  |  | (23.4) |  |  | 30.6 |
Trademarks | 4.1 |  |  | (2.8) |  |  | 1.3 |  |  | 4.1 |  |  | (2.8) |  |  | 1.3 |
Other | 0.9 |  |  | (0.5) |  |  | 0.4 |  |  | 0.9 |  |  | (0.5) |  |  | 0.4 |
Total | 368.7 |  |  | (238.4) |  |  | 130.3 |  |  | 366.1 |  |  | (233.9) |  |  | 132.2 |
Non-amortized trademarks | 136.9 |  |  | — |  |  | 136.9 |  |  | 138.5 |  |  | — |  |  | 138.5 |
Total other intangible assets | $ | 505.6 |  |  | $ | (238.4) |  |  | $ | 267.2 |  |  | $ | 504.6 |  |  | $ | (233.9) |  |  | $ | 270.7 |
Schedule of Weighted-Average Amortization Period by Major Class | The weighted-average amortization periods related to other intangible assets are as follows:
| In Years
Customer relationships | 14
Developed technology | 5
Internally developed software | 5
Patents | 15
Trademarks | 9
Other | 50

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