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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

X

- Definition

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.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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