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Goodwill and Other Intangible Assets (Tables) | 12 Months Ended
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Dec. 28, 2019
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 2019 and 2018 are as follows:
(Amounts in millions) |  | Commercial & Industrial Group |  | Snap-on Tools Group |  | Repair Systems & Information Group |  | Total
Balance as of 2017 year end |  | $ | 298.4 |  |  | $ | 12.5 |  |  | $ | 613.2 |  |  | $ | 924.1 |
Currency translation |  | (16.3) |  |  | — |  |  | (9.7) |  |  | (26.0) |
Acquisitions |  | 4.1 |  |  | — |  |  | — |  |  | 4.1 |
Balance as of 2018 year end |  | $ | 286.2 |  |  | $ | 12.5 |  |  | $ | 603.5 |  |  | $ | 902.2 |
Currency translation |  | (6.4) |  |  | — |  |  | (1.1) |  |  | (7.5) |
Acquisitions |  | 6.4 |  |  | — |  |  | 12.7 |  |  | 19.1 |
Balance as of 2019 year end |  | $ | 286.2 |  |  | $ | 12.5 |  |  | $ | 615.1 |  |  | $ | 913.8 |
Other Intangible Assets by Major Class | Additional disclosures related to other intangible assets as of 2019 and 2018 year end are as follows:
|  | 2019 |  |  |  | 2018 |  |
(Amounts in millions) |  | Gross Carrying Value |  | Accumulated Amortization |  | Gross Carrying Value |  | Accumulated Amortization
Amortized other intangible assets: |  |  |  |  |  |  |  |
Customer relationships |  | $ | 182.9 |  |  | $ | (117.9) |  |  | $ | 172.2 |  |  | $ | (107.6) |
Developed technology |  | 19.8 |  |  | (18.9) |  |  | 18.5 |  |  | (18.3) |
Internally developed software |  | 168.0 |  |  | (125.4) |  |  | 156.6 |  |  | (116.6) |
Patents |  | 38.5 |  |  | (23.7) |  |  | 35.7 |  |  | (22.9) |
Trademarks |  | 3.5 |  |  | (2.1) |  |  | 3.2 |  |  | (2.0) |
Other |  | 7.3 |  |  | (3.1) |  |  | 7.3 |  |  | (2.9) |
Total |  | 420.0 |  |  | (291.1) |  |  | 393.5 |  |  | (270.3) |
Non-amortized trademarks |  | 115.0 |  |  | — |  |  | 109.7 |  |  | — |
Total other intangible assets |  | $ | 535.0 |  |  | $ | (291.1) |  |  | $ | 503.2 |  |  | $ | (270.3) |
Weighted-Average Amortization Period by Major Class | The weighted-average amortization periods related to other intangible assets are as follows:
|  | In Years
Customer relationships |  | 15
Developed technology |  | 2
Internally developed software |  | 6
Patents |  | 7
Trademarks |  | 5
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=108376223&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=108376223&loc=d3e13854-109267 + Details
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