Goodwill - Summary of Goodwill (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended
Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Goodwill [Line Items]
At January 1, Gross cost	$ 384.2	$ 375.5
At January 1, Accumulated impairment losses	(235.2)	(234.0)
At January 1, Net book amount	149.0	141.5
Exchange effect	0	0
Acquisitions	39.6	8.7
Adjustments to purchase price allocation	0.6
Impairment losses	(1.3)	(1.2)	(2.0)
At December 31, Gross cost	424.4	384.2	375.5
At December 31, Accumulated impairment losses	(236.5)	(235.2)	(234.0)
At December 31, Net book amount	187.9	149.0	141.5
Fuel Specialties [Member]
Goodwill [Line Items]
At January 1, Gross cost	117.6	108.8
At January 1, Accumulated impairment losses	0	0
At January 1, Net book amount	117.6	108.8
Exchange effect	0	0.1
Acquisitions	22.9	8.7
Adjustments to purchase price allocation	0.6
Impairment losses	0	0
At December 31, Gross cost	141.1	117.6
At December 31, Accumulated impairment losses	0	0
At December 31, Net book amount	141.1	117.6
Performance Chemicals [Member]
Goodwill [Line Items]
At January 1, Gross cost	30.1	30.1
At January 1, Accumulated impairment losses	0	0
At January 1, Net book amount	30.1	30.1
Exchange effect	0	0
Acquisitions	16.7	0
Adjustments to purchase price allocation	0
Impairment losses	0	0
At December 31, Gross cost	46.8	30.1
At December 31, Accumulated impairment losses	0	0
At December 31, Net book amount	46.8	30.1
Octane Additives [Member]
Goodwill [Line Items]
At January 1, Gross cost	236.5	236.6
At January 1, Accumulated impairment losses	(235.2)	(234.0)
At January 1, Net book amount	1.3	2.6
Exchange effect	0	(0.1)
Acquisitions	0	0
Adjustments to purchase price allocation	0
Impairment losses	(1.3)	(1.2)	(2.0)
At December 31, Gross cost	236.5	236.5	236.6
At December 31, Accumulated impairment losses	(236.5)	(235.2)	(234.0)
At December 31, Net book amount	$ 0	$ 1.3	$ 2.6

Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

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-SubTopic 20

-Section 50

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Amount of increase in asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized resulting from a business combination.

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Amount of accumulated impairment loss for an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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Amount of loss from the write-down of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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Amount of increase (decrease) from adjustments after acquisition date under purchase accounting of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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Amount of increase (decrease) from foreign currency translation adjustments of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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