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Segment Reporting and Geographical Area Data - Summary of Segment Reporting related to Selling, General and Administrative Expense and Research and Development Expense (Detail) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Segment Reporting Information [Line Items]      
Total selling, general and administrative expenses and research and development expenses $ 336.1 $ 361.8 $ 429.5
Operating Segments [Member] | Performance Chemicals [Member]      
Segment Reporting Information [Line Items]      
Total selling, general and administrative expenses and research and development expenses 61.0 65.5 51.1
Operating Segments [Member] | Fuel Specialties [Member]      
Segment Reporting Information [Line Items]      
Total selling, general and administrative expenses and research and development expenses 107.4 110.3 105.4
Operating Segments [Member] | Oilfield Services [Member]      
Segment Reporting Information [Line Items]      
Total selling, general and administrative expenses and research and development expenses 94.9 115.8 191.8
Corporate, Non-Segment [Member]      
Segment Reporting Information [Line Items]      
Total selling, general and administrative expenses and research and development expenses $ 72.8 $ 70.2 $ 81.2