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Goodwill and Other Intangible Assets (Tables) | 12 Months Ended
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Jan. 01, 2022
Goodwill and Intangible Assets Disclosure [Abstract] |
Changes in Carrying Amount of Goodwill by Segment | The changes in the carrying amount of goodwill by segment for 2021 and 2020 are as follows:
(Amounts in millions) |  | Commercial & Industrial Group |  | Snap-on Tools Group |  | Repair Systems & Information Group |  | Total
Balance as of 2019 year end |  | $ | 286.2 |  |  | $ | 12.5 |  |  | $ | 615.1 |  |  | $ | 913.8 |
Currency translation |  | 26.7 |  |  | (0.1) |  |  | 15.0 |  |  | 41.6 |
Acquisitions |  | 18.3 |  |  | — |  |  | 8.7 |  |  | 27.0 |
Balance as of 2020 year end |  | $ | 331.2 |  |  | $ | 12.4 |  |  | $ | 638.8 |  |  | $ | 982.4 |
Currency translation |  | (19.4) |  |  | — |  |  | (11.3) |  |  | (30.7) |
Acquisitions |  | 14.0 |  |  | — |  |  | 150.8 |  |  | 164.8 |
Balance as of 2021 year end |  | $ | 325.8 |  |  | $ | 12.4 |  |  | $ | 778.3 |  |  | $ | 1,116.5 |
Other Intangible Assets by Major Class | Additional disclosures related to other intangible assets as of 2021 and 2020 year end are as follows:
|  | 2021 |  | 2020
(Amounts in millions) |  | Gross Carrying Value |  | Accumulated Amortization |  | Gross Carrying Value |  | Accumulated Amortization
Amortized other intangible assets: |  |  |  |  |  |  |  |
Customer relationships |  | $ | 217.8 |  |  | $ | (142.1) |  |  | $ | 191.5 |  |  | $ | (130.1) |
Developed technology |  | 36.6 |  |  | (23.2) |  |  | 21.8 |  |  | (19.9) |
Internally developed software |  | 182.7 |  |  | (139.1) |  |  | 172.2 |  |  | (128.0) |
Patents |  | 45.7 |  |  | (25.1) |  |  | 43.2 |  |  | (25.3) |
Trademarks |  | 3.9 |  |  | (2.3) |  |  | 3.9 |  |  | (2.4) |
Other |  | 8.3 |  |  | (4.1) |  |  | 8.2 |  |  | (3.9) |
Total |  | 495.0 |  |  | (335.9) |  |  | 440.8 |  |  | (309.6) |
Non-amortized trademarks |  | 142.6 |  |  | — |  |  | 129.6 |  |  | — |
Total other intangible assets |  | $ | 637.6 |  |  | $ | (335.9) |  |  | $ | 570.4 |  |  | $ | (309.6) |
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 |  | 6
Patents |  | 14
Trademarks |  | 9
Other |  | 39

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- Definition Tabular disclosure of goodwill by reportable segment and in total which includes a rollforward schedule. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=121556970&loc=d3e13816-109267 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=121556970&loc=d3e13854-109267 + Details
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