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Goodwill (Tables) | 12 Months Ended
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Dec. 31, 2023
Goodwill and Intangible Assets Disclosure [Abstract] |
Summary of Goodwill | The following table analyzes goodwill movement for 2023 and 2022.
(in millions) |  | Performance Chemicals |  |  | Fuel Specialties |  |  | Oilfield Services |  |  | Total |
At December 31, 2021 |  |  |  |  |  |  |  |  |  |  |  |
Gross cost |  | $ | 111.9 |  |  | $ | 207.6 |  |  | $ | 44.8 |  |  | $ | 364.3 |
Accumulated impairment losses |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |
Net book amount |  | $ | 111.9 |  |  | $ | 207.6 |  |  | $ | 44.8 |  |  | $ | 364.3 |
Exchange effect |  |  | (5.4 | ) |  |  | (0.1 | ) |  |  | — |  |  |  | (5.5 | )
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 |

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