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Segment Reporting - Summary of Segment Reporting related to Selling, General and Administrative Expense and Research and Development Expense (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 selling, general and administrative expenses and research and development expenses	$ 85.6	$ 77.9	$ 255.8	$ 268.0
Operating Segments [Member] \| Performance Chemicals [Member]
Segment Reporting Information [Line Items]
Total selling, general and administrative expenses and research and development expenses	16.6	16.1	48.3	47.7
Operating Segments [Member] \| Fuel Specialties [Member]
Segment Reporting Information [Line Items]
Total selling, general and administrative expenses and research and development expenses	25.9	24.8	77.3	79.2
Operating Segments [Member] \| Oilfield Services [Member]
Segment Reporting Information [Line Items]
Total selling, general and administrative expenses and research and development expenses	24.9	25.2	73.4	91.5
Corporate, Non-Segment [Member]
Segment Reporting Information [Line Items]
Total selling, general and administrative expenses and research and development expenses	$ 18.2	$ 11.8	$ 56.8	$ 49.6