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Other Intangible Assets (Tables) | 3 Months Ended
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Mar. 31, 2024
Goodwill and Intangible Assets Disclosure [Abstract] |
Summary of Other Intangible Assets | The following table analyzes other intangible assets movements in the year:
(in millions) |  | 2024 |
Gross cost at January 1 |  | $ | 315.1 |
Additions |  |  | 3.6 |
Exchange effect |  |  | (1.2 | )
Gross cost at March 31 |  |  | 317.5 |
Accumulated amortization at January 1 |  |  | (257.8 | )
Amortization expense |  |  | (2.8 | )
Exchange effect |  |  | 0.8 |
Accumulated amortization at March 31 |  |  | (259.8 | )
Net book amount at March 31 |  | $ | 57.7 |

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