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Nature of Operations	12 Months Ended
	Dec. 31, 2016
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Nature of Operations	Note 1.    Nature of Operations Innospec develops, manufactures, blends, markets and supplies fuel additives, oilfield chemicals, personal care products and other specialty chemicals. Our products are sold primarily to oil and gas exploration and production companies, oil refineries, personal care companies, and other chemical and industrial companies throughout the world. Our fuel additives help improve fuel efficiency, boost engine performance and reduce harmful emissions. Our oilfield services business supplies drilling and production chemicals which make exploration and production more cost-efficient, and more environmentally-friendly. Our other specialty chemicals provide effective technology-based solutions for our customers’ processes or products focused in the Personal Care and Polymers markets. Our Octane Additives business manufactures a fuel additive for use in automotive gasoline and provides services in respect of environmental remediation. Our principal product lines and reportable segments are Fuel Specialties, Performance Chemicals, Oilfield Services and Octane Additives. In the second quarter of 2016, we finalized changes to our reporting segments to reflect the development of our management structure and strategy. As a result of these changes, information that the Company’s chief operating decision maker regularly reviews for purposes of allocating resources and assessing financial performance has changed. Therefore, the Company has reported its financial performance based on the four reportable segments described below. • Fuel Specialties, including the Polymers business previously reported in Performance Chemicals and excluding the Oilfield Services business • Performance Chemicals, excluding the Polymers business • Oilfield Services, which was previously reported within Fuel Specialties • Octane Additives (no change) We have recast certain prior period amounts to conform to the way we internally manage and monitor segment performance. The Fuel Specialties, Performance Chemicals and Oilfield Services segments operate in markets where we actively seek growth opportunities although their ultimate customers are different. The Octane Additives segment is expected to decline in the near future as our one remaining refinery customer transitions to unleaded fuel. See Note 3 of the Notes to the Consolidated Financial Statements for financial information on the Company’s reportable segments.

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- Definition

The entire disclosure for the nature of an entity's business, major products or services, principal markets including location, and the relative importance of its operations in each business and the basis for the determination, including but not limited to, assets, revenues, or earnings. For an entity that has not commenced principal operations, disclosures about the risks and uncertainties related to the activities in which the entity is currently engaged and an understanding of what those activities are being directed toward.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 275
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=64851502&loc=d3e6003-108592

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 275
-SubTopic 10
-Section 50
-Paragraph 2A
-URI http://asc.fasb.org/extlink&oid=64851502&loc=SL51803626-108592

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- References

No definition available.

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