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Goodwill (Tables) | 12 Months Ended
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Dec. 31, 2024
Goodwill and Intangible Assets Disclosure [Abstract] |
Summary of Goodwill | The following table analyzes goodwill movement for 2024 and 2023.
(in millions) |  | Performance Chemicals |  |  | Fuel Specialties |  |  | Oilfield Services |  |  | Total |
At December 31, 2022 |  |  |  |  |  |  |  |  |  |  |  |
Gross cost |  | $ | 106.5 |  |  | $ | 207.5 |  |  | $ | 44.8 |  |  | $ | 358.8 |
Accumulated impairment losses |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |
Net book amount |  | $ | 106.5 |  |  | $ | 207.5 |  |  | $ | 44.8 |  |  | $ | 358.8 |
Additions |  |  | 37.4 |  |  |  | — |  |  |  | — |  |  |  | 37.4 |
Exchange effect |  |  | 3.0 |  |  |  | 0.1 |  |  |  | — |  |  |  | 3.1 |
At December 31, 2023 |  |  |  |  |  |  |  |  |  |  |  |
Gross cost |  | $ | 146.9 |  |  | $ | 207.6 |  |  | $ | 44.8 |  |  | $ | 399.3 |
Accumulated impairment losses |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |
Net book amount |  | $ | 146.9 |  |  | $ | 207.6 |  |  | $ | 44.8 |  |  | $ | 399.3 |
Adjustment to the acquired fair values |  |  | (3.1 | ) |  |  | — |  |  |  | — |  |  |  | (3.1 | )
Exchange effect |  |  | (13.7 | ) |  |  | (0.1 | ) |  |  | 0.1 |  |  |  | (13.7 | )
At December 31, 2024 |  |  |  |  |  |  |  |  |  |  |  |
Gross cost |  | $ | 130.1 |  |  | $ | 207.5 |  |  | $ | 44.9 |  |  | $ | 382.5 |
Accumulated impairment losses |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |
Net book amount |  | $ | 130.1 |  |  | $ | 207.5 |  |  | $ | 44.9 |  |  | $ | 382.5 |

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