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Segment Reporting - Segment Reporting (Detail) - USD ($)
$ in Millions
 3 Months Ended
Mar. 31, 2022
Mar. 31, 2021
Segment Reporting Information [Line Items]    
Net sales $ 472.4 $ 339.6
Gross profit/(loss) 139.3 100.8
Operating income/(loss) 44.3 28.2
Operating Segments [Member] | Fuel Specialties [Member]    
Segment Reporting Information [Line Items]    
Net sales 191.8 139.3
Gross profit/(loss) 60.7 44.9
Operating income/(loss) 35.5 23.8
Operating Segments [Member] | Fuel Specialties [Member] | Refinery and Performance [Member]    
Segment Reporting Information [Line Items]    
Net sales 148.4 99.3
Operating Segments [Member] | Fuel Specialties [Member] | Other [Member]    
Segment Reporting Information [Line Items]    
Net sales 39.3 34.7
Operating Segments [Member] | Performance Chemicals [Member]    
Segment Reporting Information [Line Items]    
Net sales 167.1 125.9
Gross profit/(loss) 40.8 31.4
Operating income/(loss) 25.3 18.3
Operating Segments [Member] | Performance Chemicals [Member] | Personal Care [Member]    
Segment Reporting Information [Line Items]    
Net sales 103.4 68.2
Operating Segments [Member] | Performance Chemicals [Member] | Home Care [Member]    
Segment Reporting Information [Line Items]    
Net sales 24.4 23.0
Operating Segments [Member] | Performance Chemicals [Member] | Other [Member]    
Segment Reporting Information [Line Items]    
Net sales 43.4 40.0
Operating Segments [Member] | Oilfield Services [Member]    
Segment Reporting Information [Line Items]    
Net sales 113.5 74.4
Gross profit/(loss) 37.8 24.5
Operating income/(loss) 2.5 1.2
Corporate, Non-Segment [Member]    
Segment Reporting Information [Line Items]    
Corporate costs $ (19.0) $ (15.1)