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Goodwill and Other Intangible Assets (Tables) | 6 Months Ended
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Jun. 30, 2024
Goodwill and Other Intangible Assets [Abstract] |
Intangible Assets Subject to Amortization | Acquired intangible assets subject to amortization as of June 30, 2024 and December 31, 2023 were as follows:
|  |  |  |  | Jun. 30, 2024 |  |  | Dec. 31, 2023 |
(in millions of dollars) |  | Weighted Average Useful Life (Years) |  |  | Gross Carrying Amount |  |  | Accumulated Amortization |  |  | Gross Carrying Amount |  |  | Accumulated Amortization |
Tradenames |  |  | 34 |  |  | $ | 221.3 |  |  | $ | 61.6 |  |  | $ | 221.5 |  |  | $ | 59.1 |
Technology |  |  | 13 |  |  |  | 18.8 |  |  |  | 14.9 |  |  |  | 18.8 |  |  |  | 14.2 |
Patents and trademarks |  |  | 19 |  |  |  | 6.4 |  |  |  | 6.4 |  |  |  | 6.4 |  |  |  | 6.4 |
Customer relationships |  |  | 21 |  |  |  | 78.4 |  |  |  | 17.3 |  |  |  | 79.0 |  |  |  | 15.0 |
|  |  | 29 |  |  | $ | 324.9 |  |  | $ | 100.2 |  |  | $ | 325.7 |  |  | $ | 94.7 |

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- Definition Tabular disclosure of the characteristics, including initial carrying value, residual amount, weighted average useful life, of finite-lived intangible assets acquired during the period by major class. A major class is composed of intangible assets that can be grouped together because they are similar, either by nature or by their use in the operations of the company. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 350 -SubTopic 30 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (d) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482665/350-30-50-1 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 350 -SubTopic 30 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482665/350-30-50-1 + Details
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