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Segment Reporting and Geographical Area Data - Summary of Segment Reporting related to Cost of Goods Sold (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Segment Reporting Information [Line Items]
Total cost of goods sold	$ 1,285.6	$ 1,302.5	$ 1,357.7
Operating Segments [Member] \| Performance Chemicals [Member]
Segment Reporting Information [Line Items]
Total cost of goods sold	559.4	505.3	456.0
Operating Segments [Member] \| Fuel Specialties [Member]
Segment Reporting Information [Line Items]
Total cost of goods sold	449.3	461.2	480.8
Operating Segments [Member] \| Oilfield Services [Member]
Segment Reporting Information [Line Items]
Total cost of goods sold	$ 276.9	$ 336.0	$ 420.9

The aggregate costs related to goods produced and sold and services rendered by an entity during the reporting period. This excludes costs incurred during the reporting period related to financial services rendered and other revenue generating activities.

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