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Other intangible assets | 3 Months Ended
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Mar. 31, 2023
Goodwill and Intangible Assets Disclosure [Abstract] |
Other intangible assets | 6. Other intangible assets The following table presents the components of other intangible assets:
(in millions) | March 31, 2023 |  | December 31, 2022
Gross value |  | Accumulated amortization |  | Carrying value |  | Gross value |  | Accumulated amortization |  | Carrying value
Customer relationships | $ | 4,834.4 |  |  | $ | 1,403.3 |  |  | $ | 3,431.1 |  |  | $ | 4,806.4 |  |  | $ | 1,333.5 |  |  | $ | 3,472.9 |
Trade names | 356.3 |  |  | 211.3 |  |  | 145.0 |  |  | 354.4 |  |  | 205.1 |  |  | 149.3 |
Other | 632.9 |  |  | 224.2 |  |  | 408.7 |  |  | 630.9 |  |  | 212.1 |  |  | 418.8 |
Total finite-lived | $ | 5,823.6 |  |  | $ | 1,838.8 |  |  | 3,984.8 |  |  | $ | 5,791.7 |  |  | $ | 1,750.7 |  |  | 4,041.0 |
Indefinite-lived | 92.3 |  |  |  |  |  |  | 92.3 |
Total | $ | 4,077.1 |  |  |  |  |  |  | $ | 4,133.3 |

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- Definition The entire disclosure for all or part of the information related to intangible assets. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 350 -SubTopic 30 -Name Accounting Standards Codification -Publisher FASB -URI https://asc.fasb.org//350-30/tableOfContent + Details
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