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Segment Reporting - Summary of Segment Reporting related to Cost of Goods Sold (Detail) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2025 | Sep. 30, 2024 | Sep. 30, 2025 | Sep. 30, 2024
Segment Reporting Information [Line Items] |  |  |  |
Total cost of goods sold | $ 325.2 | $ 319.3 | $ 957.4 | $ 971.9
Operating Segments [Member] | Performance Chemicals [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total cost of goods sold | 145.0 | 127.5 | 421.4 | 374.5
Operating Segments [Member] | Fuel Specialties [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total cost of goods sold | 110.8 | 110.1 | 322.5 | 335.4
Operating Segments [Member] | Oilfield Services [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total cost of goods sold | $ 69.4 | $ 81.7 | $ 213.5 | $ 262.0

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