Goodwill - Summary of Goodwill (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Goodwill [Line Items]
Gross cost, beginning balance	$ 371.2	$ 599.5
Accumulated impairment losses, beginning balance	0.0	(236.5)
Net book amount, beginning balance	371.2	363.0
Exchange effect	(6.9)	8.2
Gross cost, ending balance	364.3	371.2
Accumulated impairment losses, ending balance	0.0	0.0
Net book amount, ending balance	364.3	371.2
Fuel Specialties [Member]
Goodwill [Line Items]
Gross cost, beginning balance	207.9	207.7
Accumulated impairment losses, beginning balance	0.0	0.0
Net book amount, beginning balance	207.9	207.7
Exchange effect	(0.3)	0.2
Gross cost, ending balance	207.6	207.9
Accumulated impairment losses, ending balance	0.0	0.0
Net book amount, ending balance	207.6	207.9
Performance Chemicals [Member]
Goodwill [Line Items]
Gross cost, beginning balance	118.5	110.5
Accumulated impairment losses, beginning balance	0.0	0.0
Net book amount, beginning balance	118.5	110.5
Exchange effect	(6.6)	8.0
Gross cost, ending balance	111.9	118.5
Accumulated impairment losses, ending balance	0.0	0.0
Net book amount, ending balance	111.9	118.5
Oilfield Services [Member]
Goodwill [Line Items]
Gross cost, beginning balance	44.8	44.8
Accumulated impairment losses, beginning balance	0.0	0.0
Net book amount, beginning balance	44.8	44.8
Exchange effect	0.0	0.0
Gross cost, ending balance	44.8	44.8
Accumulated impairment losses, ending balance	0.0	0.0
Net book amount, ending balance	44.8	44.8
Octane Additives [Member]
Goodwill [Line Items]
Gross cost, beginning balance	0.0	236.5
Accumulated impairment losses, beginning balance	0.0	(236.5)
Net book amount, beginning balance	0.0	0.0
Exchange effect	0.0	0.0
Gross cost, ending balance	0.0	0.0
Accumulated impairment losses, ending balance	0.0	0.0
Net book amount, ending balance	$ 0.0	$ 0.0