Innospec (IOSP) 10-K 15 Feb 17 2016 FY Annual report Financial data

Document and Entity Information

Document and Entity Information - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Feb. 08, 2017	Jun. 30, 2016
Document And Entity Information [Abstract]
Document Type	10-K
Amendment Flag	false
Document Period End Date	Dec. 31, 2016
Document Fiscal Year Focus	2,016
Document Fiscal Period Focus	FY
Trading Symbol	IOSP
Entity Registrant Name	INNOSPEC INC.
Entity Central Index Key	1,054,905
Current Fiscal Year End Date	--12-31
Entity Well-known Seasoned Issuer	No
Entity Current Reporting Status	Yes
Entity Voluntary Filers	No
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		24,071,158
Entity Public Float			$ 604

Consolidated Statements of Inco

Consolidated Statements of Income - USD ($) shares in Thousands, $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Income Statement [Abstract]
Net sales	$ 883.4	$ 1,012.3	$ 960.9
Cost of goods sold	(551.1)	(666.3)	(658.9)
Gross profit	332.3	346	302
Operating expenses:
Selling, general and administrative	(209.5)	(206.7)	(169.2)
Research and development	(25.4)	(25.3)	(22.2)
Adjustment to fair value of contingent consideration	9.4	40.7	1.9
(Loss)/profit on disposal of subsidiary	(1.4)	1.6	0
Total operating expenses	(226.9)	(189.7)	(189.5)
Operating income	105.4	156.3	112.5
Other net income	0.9	0	1.8
Interest expense, net	(3.2)	(4)	(3.4)
Income before income taxes	103.1	152.3	110.9
Income taxes	(21.8)	(32.8)	(26.8)
Net income	$ 81.3	$ 119.5	$ 84.1
Earnings per share:
Basic	$ 3.39	$ 4.96	$ 3.45
Diluted	$ 3.33	$ 4.86	$ 3.38
Weighted average shares outstanding (in thousands):
Basic	23,998	24,107	24,391
Diluted	24,442	24,612	24,878
Dividend declared per common share	$ 0.67	$ 0.61	$ 0.55

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Statement of Comprehensive Income [Abstract]
Net income	$ 81.3	$ 119.5	$ 84.1
Changes in cumulative translation adjustment, net of tax of $1.5 million, $(0.2) million and $1.5 million, respectively	(20.5)	(11)	(18)
Unrealized gains on derivative instruments, net of tax of $(0.1) million, $0.0 million and $0.0 million, respectively	0.3	0	0
Amortization of prior service credit, net of tax of $0.2 million, $0.2 million and $0.3 million, respectively	(0.9)	(1)	(1)
Amortization of actuarial net losses, net of tax of $(0.5) million, $(1.0) million and $(1.1) million, respectively	2.1	4.2	4.3
Actuarial net gains arising during the year, net of tax of $(0.8) million, $(0.9) million and $(13.9) million, respectively	3.7	3.2	54.7
Total comprehensive income	$ 66	$ 114.9	$ 124.1

Consolidated Statements of Com4

Consolidated Statements of Comprehensive Income (Parenthetical) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Statement of Comprehensive Income [Abstract]
Changes in cumulative translation adjustment, tax	$ 1.5	$ (0.2)	$ 1.5
Unrealized gains on derivative instruments, tax	(0.1)	0	0
Amortization of prior service credit, tax	0.2	0.2	0.3
Amortization of actuarial net losses, tax	(0.5)	(1)	(1.1)
Actuarial net gains, tax	$ (0.8)	$ (0.9)	$ (13.9)

Consolidated Statements of Accu

Consolidated Statements of Accumulated Other Comprehensive Loss - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]
Cumulative translation adjustment	$ (80.5)	$ (60)	$ (49)
Unrealized gains on derivative instruments, net of tax	0.3	0	0
Unrecognized actuarial net losses, net of tax of $19.4 million, $20.5 million and $22.2 million, respectively	(46)	(50.9)	(57.3)
Accumulated other comprehensive loss	$ (126.2)	$ (110.9)	$ (106.3)

Consolidated Statements of Acc6

Consolidated Statements of Accumulated Other Comprehensive Loss (Parenthetical) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]
Unrecognized actuarial net losses, tax	$ 19.4	$ 20.5	$ 22.2

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Millions	Dec. 31, 2016	Dec. 31, 2015
Current assets:
Cash and cash equivalents	$ 101.9	$ 136.9
Short-term investments	0	4.8
Trade and other accounts receivable (less allowances of $4.7 million and $3.6 million, respectively)	154.4	137.4
Inventories (less allowances of $8.6 million and $8.8 million, respectively):
Finished goods	118.1	104.4
Raw materials	55.7	55.5
Total inventories	173.8	159.9
Current portion of deferred tax assets	0	8.8
Prepaid expenses	6.2	6.1
Prepaid income taxes	4.8	3
Other current assets	0	1.8
Total current assets	441.1	458.7
Net property, plant and equipment	157.4	76
Goodwill	374.8	267.4
Other intangible assets	144.4	168.7
Deferred tax assets, net of current portion	14.9	1.4
Pension asset	48	55.5
Other non-current assets	0.8	0.9
Total assets	1,181.4	1,028.6
Current liabilities:
Accounts payable	59.6	52.2
Accrued liabilities	94.3	84.1
Current portion of long-term debt	10.3	0
Current portion of finance leases	1.6	0.7
Current portion of plant closure provisions	6.7	6.4
Current portion of accrued income taxes	9.4	7.9
Current portion of acquisition-related contingent consideration	1.1	54.6
Current portion of deferred income	0.1	0.2
Total current liabilities	183.1	206.1
Long-term debt, net of current portion	258.5	131.6
Finance leases, net of current portion	2.9	2.4
Plant closure provisions, net of current portion	32.8	31.3
Unrecognized tax benefits	2.3	3.9
Deferred tax liabilities	32.3	37.7
Pension liabilities	14.2	9.2
Deferred income, net of current portion	0.5	0.6
Other non-current liabilities	1	0.5
Equity:
Common stock, $0.01 par value, authorized 40,000,000 shares, issued 29,554,500 shares	0.3	0.3
Additional paid-in capital	315.1	311
Treasury stock (5,483,341 and 5,453,078 shares at cost, respectively)	(97.5)	(91.8)
Retained earnings	561.8	496.4
Accumulated other comprehensive loss	(126.2)	(110.9)
Total Innospec stockholders' equity	653.5	605
Non-controlling interest	0.3	0.3
Total equity	653.8	605.3
Total liabilities and equity	$ 1,181.4	$ 1,028.6

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Millions	Dec. 31, 2016	Dec. 31, 2015
Statement of Financial Position [Abstract]
Allowances for doubtful accounts	$ 4.7	$ 3.6
Inventory allowances	$ 8.6	$ 8.8
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	40,000,000	40,000,000
Common stock, shares issued	29,554,500	29,554,500
Treasury stock, shares	5,483,341	5,453,078

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Cash Flows from Operating Activities
Net income		$ 81.3	$ 119.5	$ 84.1
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	[1]	38.1	35.2	29.1
Adjustment to fair value of contingent consideration		(9.4)	(40.7)	(1.9)
Loss/(profit) on disposal of subsidiary		1.4	(1.6)	0
Deferred taxes		0.9	12	5.8
Excess tax benefit from stock-based payment arrangements		(1)	(0.5)	(0.4)
Cash contributions to defined benefit pension plans		(1.1)	(9)	(11.6)
Non-cash expense of defined benefit pension plans		(6.2)	0.5	3.8
Stock option compensation		3.3	3.7	2.6
Repayment of promissory note in civil complaint settlement		0	0	(5)
Changes in assets and liabilities, net of effects of acquired and divested companies:
Trade and other accounts receivable		(6)	13.6	(0.9)
Inventories		7.7	5.5	(11.1)
Prepaid expenses		0.5	1.8	(1.3)
Accounts payable and accrued liabilities		(3.4)	(24.5)	0.5
Accrued income taxes		(2)	2	14.9
Plant closure provisions		1.9	4.1	1.9
Unrecognized tax benefits		(1.6)	(2.3)	(6.8)
Other non-current assets and liabilities		0.1	(1.6)	2.6
Net cash provided by operating activities		104.5	117.7	106.3
Cash Flows from Investing Activities
Capital expenditures		(16.5)	(17.6)	(13.5)
Business combinations, net of cash acquired		(197.4)	0	(98.7)
Proceeds from disposal of subsidiary		0	41.5	0
Internally developed software		0	(8.6)	(8.4)
Purchase of short-term investments		0	(6.7)	(5)
Sale of short-term investments		4.8	6.4	6.6
Net cash (used in)/provided by investing activities		(209.1)	15	(119)
Cash Flows from Financing Activities
Non-controlling interest		0	0.3	0
Proceeds from revolving credit facility		48	6	53
Repayments of revolving credit facility		(20)	(12)	(56)
Receipt of term loans		110	0	0
Repayment of finance leases and term loans		(1.1)	(0.4)	(1.7)
Refinancing costs		(1.2)	(1.5)	(0.1)
Payment for acquisition-related contingent consideration		(44)	0	0
Excess tax benefit from stock-based payment arrangements		1	0.5	0.4
Dividend paid		(15.9)	(14.9)	(13.4)
Issue of treasury stock		2.1	1	0.4
Repurchase of common stock		(8.4)	(15.3)	(6.9)
Net cash provided by/(used in) financing activities		70.5	(36.3)	(24.3)
Effect of foreign currency exchange rate changes on cash		(0.9)	(1.1)	(1.6)
Net change in cash and cash equivalents		(35)	95.3	(38.6)
Cash and cash equivalents at beginning of year		136.9	41.6	80.2
Cash and cash equivalents at end of year		$ 101.9	$ 136.9	$ 41.6
[1]	Amortization of deferred finance costs of $0.4 million (2015 - $1.2 million, 2014 - $0.7 million) for the year are included in depreciation and amortization in the cash flow statement but in interest expense in the income statement. Cash payments/receipts in respect of income taxes and interest are disclosed in Note 10 and Note 11, respectively, of the Notes to the Consolidated Financial Statements.

Consolidated Statements of Ca10

Consolidated Statements of Cash Flows (Parenthetical) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Statement of Cash Flows [Abstract]
Amortization of deferred finance costs	$ 0.4	$ 1.2	$ 0.7

Consolidated Statements of Equi

Consolidated Statements of Equity - USD ($) $ in Millions	Total	Common Stock [Member]	Additional Paid-In Capital [Member]	Treasury Stock [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Loss [Member]	Non-controlling Interest [Member]
Beginning Balance at Dec. 31, 2013	$ 409.4	$ 0.3	$ 308.8	$ (73.3)	$ 319.9	$ (146.3)	$ 0
Net income	84.1				84.1
Dividend paid	(13.4)				(13.4)
Changes in cumulative translation adjustment	(18)					(18)
Unrealized gains on derivative instruments, net of tax	0
Treasury stock re-issued	0.5		(1)	1.5
Treasury stock repurchased	(6.9)			(6.9)
Excess tax benefit from stock-based payment arrangements	0.4		0.4
Stock option compensation	2.6		2.6
Fair value of contingent consideration	(0.8)		(2)		1.2
Amortization of prior service credit, net of tax	(1)					(1)
Amortization of actuarial net losses, net of tax	4.3					4.3
Actuarial net gains arising during the year, net of tax	54.7					54.7
Ending Balance at Dec. 31, 2014	515.9	0.3	308.8	(78.7)	391.8	(106.3)	0
Net income	119.5				119.5
Dividend paid	(14.9)				(14.9)
Changes in cumulative translation adjustment	(11)					(11)
Non-controlling interest	0.3						0.3
Unrealized gains on derivative instruments, net of tax	0
Business disposal	(0.4)		(0.4)
Treasury stock re-issued	0.6		(1.6)	2.2
Treasury stock repurchased	(15.3)			(15.3)
Excess tax benefit from stock-based payment arrangements	0.5		0.5
Stock option compensation	3.7		3.7
Amortization of prior service credit, net of tax	(1)					(1)
Amortization of actuarial net losses, net of tax	4.2					4.2
Actuarial net gains arising during the year, net of tax	3.2					3.2
Ending Balance at Dec. 31, 2015	605.3	0.3	311	(91.8)	496.4	(110.9)	0.3
Net income	81.3				81.3
Dividend paid	(15.9)				(15.9)
Changes in cumulative translation adjustment	(20.5)					(20.5)
Unrealized gains on derivative instruments, net of tax	0.3					0.3
Treasury stock re-issued	2.5		(0.2)	2.7
Treasury stock repurchased	(8.4)			(8.4)
Excess tax benefit from stock-based payment arrangements	1		1
Stock option compensation	3.3		3.3
Amortization of prior service credit, net of tax	(0.9)					(0.9)
Amortization of actuarial net losses, net of tax	2.1					2.1
Actuarial net gains arising during the year, net of tax	3.7					3.7
Ending Balance at Dec. 31, 2016	$ 653.8	$ 0.3	$ 315.1	$ (97.5)	$ 561.8	$ (126.2)	$ 0.3

Consolidated Statements of Eq12

Consolidated Statements of Equity (Parenthetical) - $ / shares	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Statement of Stockholders' Equity [Abstract]
Dividend paid, per share	$ 0.67	$ 0.61	$ 0.55

Nature of Operations

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.

Accounting Policies

Accounting Policies	12 Months Ended
	Dec. 31, 2016
Accounting Policies [Abstract]
Accounting Policies	Note 2. Accounting Policies Basis of preparation: Use of estimates: Cash equivalents: Short-term investments: Trade and other accounts receivable: Inventories: Property, plant and equipment: Buildings 7 to 25 years Equipment 3 to 10 years Goodwill and other intangible assets: two-step two-step post-tax Deferred finance costs: re-statement Impairment of long-lived assets: post-tax Derivative instruments: non-current Environmental compliance and remediation: Acquisition-related contingent consideration: Revenue recognition: Components of net sales: Components of cost of goods sold: non-recoverable Components of selling, general and administrative expenses: Research and development expenses: Earnings per share: Foreign currencies: Stock-based compensation plans: Pension plans and other post-employment benefits: year-end. Income taxes:

Segment Reporting and Geographi

Segment Reporting and Geographical Area Data	12 Months Ended
	Dec. 31, 2016
Segment Reporting [Abstract]
Segment Reporting and Geographical Area Data	Note 3. Segment Reporting and Geographical Area Data 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. Our Fuel Specialties segment develops, manufactures, blends, markets and supplies a range of specialty chemicals products used as additives to a wide range of fuels. Our Performance Chemicals segment provides effective technology-based solutions for our customers’ processes or products focused in the Personal Care, Home Care, Agrochemical and Mining markets. Our Oilfield Services segment develops and markets products to prevent loss of mud in drilling operations, chemical solutions for fracturing and stimulation operations and products for oil and gas production which aid flow assurance and asset integrity. Our Octane Additives segment, which we believe is the world’s only producer of tetra ethyl lead (“TEL”), comprises sales of TEL for use in automotive gasoline and provides services in respect of environmental remediation. There are no significant customers with sales greater than 10% of our net group sales in the last three financial years. The Company evaluates the performance of its segments based on operating income. The following table analyzes sales and other financial information by the Company’s reportable segments: (in millions) 2016 2015 2014 Net Sales: Refinery and Performance $ 388.9 $ 408.0 $ 440.2 Other 120.7 124.8 126.6 Fuel Specialties 509.6 532.8 566.8 Personal Care 126.8 119.6 106.1 Fragrances 0.1 23.0 56.2 Other 11.8 12.4 15.3 Performance Chemicals 138.7 155.0 177.6 Oilfield Services 191.7 265.0 161.3 Octane Additives 43.4 59.5 55.2 $ 883.4 $ 1,012.3 $ 960.9 (in millions) 2016 2015 2014 Gross profit: Fuel Specialties $ 186.4 $ 176.0 $ 170.8 Performance Chemicals 43.4 42.4 43.7 Oilfield Services 76.4 99.1 58.9 Octane Additives 26.1 28.5 28.6 $ 332.3 $ 346.0 $ 302.0 Operating income: Fuel Specialties $ 110.6 $ 102.1 $ 94.2 Performance Chemicals 16.0 16.3 17.8 Oilfield Services (4.7 ) 9.0 18.0 Octane Additives 22.7 24.7 22.6 Pension credit/(charge) 6.7 0.2 (3.3 ) Corporate costs (53.9 ) (38.3 ) (38.7 ) Adjustment to fair value of contingent consideration 9.4 40.7 1.9 (Loss)/profit on disposal of subsidiary (1.4 ) 1.6 0.0 Total operating income $ 105.4 $ 156.3 $ 112.5 Identifiable assets at year end: Fuel Specialties $ 397.2 $ 408.9 $ 408.2 Performance Chemicals 340.0 120.2 156.6 Oilfield Services 240.0 240.9 293.1 Octane Additives 38.1 28.7 29.2 Corporate 166.1 229.9 112.8 $ 1,181.4 $ 1,028.6 $ 999.9 The pension credit/(charge) relates to the United Kingdom defined benefit pension plan which is closed to future service accrual. The charges related to our other much smaller pension arrangements in the U.S. and overseas are included in the segment and income statement captions consistent with the related employees’ costs. The Company includes within the corporate costs line item the costs of: • managing the Group as a company with securities listed on the NASDAQ and registered with the SEC; • the President/CEO’s office, group finance, group human resources, group legal and compliance counsel, and investor relations; • running the corporate offices in the U.S. and Europe; • the corporate development function since they do not relate to the current trading activities of our other reporting segments; and • the corporate share of the information technology, accounting and human resources departments. Sales by geographical area are reported by source, being where the transactions originated. Intercompany sales are priced using an appropriate pricing methodology and are eliminated in the consolidated financial statements. Identifiable assets are those directly associated with the operations of the geographical area. Goodwill has not been allocated by geographical location on the grounds that it would be impracticable to do so. The following tables analyze sales and other financial information by location: (in millions) 2016 2015 2014 Net sales by source: United States $ 474.4 $ 571.9 $ 468.6 United Kingdom 428.2 445.2 486.1 Rest of Europe 118.5 133.3 146.9 Rest of World 31.1 22.1 21.4 Sales between areas (168.8 ) (160.2 ) (162.1 ) $ 883.4 $ 1,012.3 $ 960.9 Income before income taxes: United States $ 16.8 $ 52.7 $ 15.2 United Kingdom 42.6 60.6 57.8 Rest of Europe 39.2 42.0 39.3 Rest of World 4.5 (3.0 ) (1.4 ) $ 103.1 $ 152.3 $ 110.9 Long-lived assets at year end: United States $ 155.3 $ 185.8 $ 197.9 United Kingdom 45.9 49.3 54.1 Rest of Europe 207.5 10.6 10.4 Rest of World 0.5 0.4 0.6 $ 409.2 $ 246.1 $ 263.0 Identifiable assets at year end: United States $ 377.3 $ 410.9 $ 449.3 United Kingdom 257.6 303.4 216.4 Rest of Europe 156.0 30.9 39.0 Rest of World 15.7 16.0 19.1 Goodwill 374.8 267.4 276.1 $ 1,181.4 $ 1,028.6 $ 999.9

Acquisition of European Differe

Acquisition of European Differentiated Surfactants business	12 Months Ended
	Dec. 31, 2016
Business Combinations [Abstract]
Acquisition of European Differentiated Surfactants business	Note 4. Acquisition of European Differentiated Surfactants business On December 30, 2016, the Company acquired the European Differentiated Surfactants business (“Huntsman”) from Huntsman Investments (Netherlands) B.V.. We purchased the business for a total consideration of $199.2 million subject to working capital adjustments. We acquired the business in order to continue our strategy of building our presence in the Personal Care and Home Care markets which forms part of our Performance Chemicals segment. There were no Huntsman revenue or earnings included in the consolidated income statement of the Company since the acquisition date. The following table summarizes the calculations of the total purchase price and the estimated allocation of the purchase price to the assets acquired and liabilities assumed for the business: (in millions) Huntsman Goodwill and other intangible assets $ 107.4 Fixed assets 76.5 Other net assets acquired 15.3 Purchase price, net of cash acquired $ 199.2 The measurement periods for the valuation of assets acquired and liabilities assumed ends as soon as information on the facts and circumstances that existed as of the acquisition dates becomes available, but does not exceed twelve months. We have reviewed the acquired intangibles associated with the acquisition and concluded that the main identifiable asset is in relation to customer lists. The fair value of the acquired customers lists and acquired fixed assets has not been finalized and accordingly the excess of the purchase consideration over net assets acquired has been classified as goodwill. Huntsman, and the associated goodwill, are included within our Performance Chemicals segment for management and reporting purposes. There is currently no goodwill amortizable for tax purposes. Supplemental unaudited pro forma information For illustrative purposes only pro forma information of the enlarged group is provided below but is not necessarily indicative of what the financial position or results of operations would have been had the Huntsman acquisition been completed as part of the Company from January 1, 2015. In addition, the unaudited pro forma financial information is not indicative of, nor does it purport to project, the future financial position of operating results of the enlarged group. (in millions, except per share data) 2016 2015 Net sales $ 1,008.0 $ 1,269.8 Net income $ 88.5 $ 121.8 Earnings per share – basic $ 3.69 $ 5.06 – diluted $ 3.62 $ 4.95 Adjustments to the unaudited pro forma financial information includes amortization in respect of the acquired other intangible assets, and the acquisition-related costs incurred in respect of all these transactions.

Earnings Per Share

Earnings Per Share	12 Months Ended
	Dec. 31, 2016
Earnings Per Share [Abstract]
Earnings Per Share	Note 5. Earnings Per Share Basic earnings per share is based on the weighted average number of common shares outstanding during the period. Diluted earnings per share includes the effect of options that are dilutive and outstanding during the period. Per share amounts are computed as follows: 2016 2015 2014 Numerator (in millions): Net income available to common stockholders $ 81.3 $ 119.5 $ 84.1 Denominator (in thousands): Weighted average common shares outstanding 23,998 24,107 24,391 Dilutive effect of stock options and awards 444 505 487 Denominator for diluted earnings per share 24,442 24,612 24,878 Net income per share, basic: $ 3.39 $ 4.96 $ 3.45 Net income per share, diluted: $ 3.33 $ 4.86 $ 3.38 In 2016, 2015 and 2014 the average number of anti-dilutive options excluded from the calculation of diluted earnings per share were 0, 0 and 36,775 respectively.

Property, Plant and Equipment

Property, Plant and Equipment	12 Months Ended
	Dec. 31, 2016
Property, Plant and Equipment [Abstract]
Property, Plant and Equipment	Note 6. Property, Plant and Equipment Property, plant and equipment consists of the following: (in millions) 2016 2015 Land $ 7.2 $ 6.2 Buildings 37.8 21.6 Equipment 192.6 128.0 Work in progress 14.2 5.2 251.8 161.0 Less accumulated depreciation (94.4 ) (85.0 ) $ 157.4 $ 76.0 Of the total net book value of equipment at December 31, 2016 $4.4 million (2015 – $3.0 million) are in respect of assets held under finance leases. Depreciation charges were $13.5 million, $13.0 million and $10.6 million in 2016, 2015 and 2014, respectively. The estimated additional cost to complete work in progress is $9.5 million (2015 – $2.4 million).

Goodwill

Goodwill	12 Months Ended
	Dec. 31, 2016
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill	Note 7. Goodwill The following table analyzes goodwill for 2016 and 2015. (in millions) Fuel Performance Oilfield Octane Total At December 31, 2014 Gross cost (1) $ 209.0 $ 29.8 $ 37.3 $ 236.5 $ 512.6 Accumulated impairment losses 0.0 0.0 0.0 (236.5 ) (236.5 ) Net book amount $ 209.0 $ 29.8 $ 37.3 $ 0.0 $ 276.1 Exchange effect (0.2 ) 0.0 0.0 0.0 (0.2 ) Adjustment (0.9 ) 0.0 0.0 0.0 (0.9 ) Disposals 0.0 (7.6 ) 0.0 0.0 (7.6 ) At December 31, 2015 Gross cost (1) $ 207.9 $ 22.2 $ 37.3 $ 236.5 $ 503.9 Accumulated impairment losses 0.0 0.0 0.0 (236.5 ) (236.5 ) Net book amount $ 207.9 $ 22.2 $ 37.3 $ 0.0 $ 267.4 Additions 0.0 107.4 0.0 0.0 107.4 At December 31, 2016 Gross cost (1) $ 207.9 $ 129.6 $ 37.3 $ 236.5 $ 611.3 Accumulated impairment losses 0.0 0.0 0.0 (236.5 ) (236.5 ) Net book amount $ 207.9 $ 129.6 $ 37.3 $ 0.0 $ 374.8 (1) Gross cost is net of $8.7 million, $0.3 million and $289.5 million of historical accumulated amortization in respect of the Fuel Specialties, Performance Chemicals and Octane Additives reporting segments, respectively The Company’s reporting units, the level at which goodwill is tested for impairment, are consistent with the reportable segments: Fuel Specialties, Performance Chemicals, Oilfield Services and Octane Additives. The components in each segment (including products, markets and competitors) have similar economic characteristics and the segments, therefore, reflect the lowest level at which operations and cash flows can be clearly distinguished, operationally and for financial reporting purposes, from the rest of the Company. The Company assesses goodwill for impairment on at least an annual basis, initially based on a qualitative assessment to determine whether it is more likely than not that the fair value of a segment is less than the carrying amount. If a potential impairment is identified then a two-step The Company performed its annual impairment assessment in respect of goodwill as at December 31, 2016, 2015 and 2014. Our impairment assessment concluded that there had been no impairment of goodwill in respect of those reporting segments. We believe that where appropriate the assumptions used in our impairment assessments are reasonable, but that they are judgmental, and variations in any of the assumptions may result in materially different calculations of any potential impairment charges.

Other Intangible Assets

Other Intangible Assets	12 Months Ended
	Dec. 31, 2016
Goodwill and Intangible Assets Disclosure [Abstract]
Other Intangible Assets	Note 8. Other Intangible Assets Other intangible assets comprise the following: (in millions) 2016 2015 Gross cost: – Product rights $ 34.0 $ 34.0 – Brand names 8.9 8.9 – Technology 55.1 55.1 – Customer relationships 85.1 85.1 – Patents 2.9 2.9 – Non-compete agreements 4.1 4.1 – Marketing related 22.1 22.1 – Internally developed software 36.4 36.4 248.6 248.6 Accumulated amortization: – Product rights (12.6 ) (8.8 ) – Brand names (3.2 ) (2.0 ) – Technology (12.3 ) (8.9 ) – Customer relationships (32.5 ) (25.7 ) – Patents (2.9 ) (2.9 ) – Non-compete agreements (3.4 ) (2.5 ) – Marketing related (21.2 ) (20.3 ) – Internally developed software (16.1 ) (8.8 ) (104.2 ) (79.9 ) $ 144.4 $ 168.7 Product rights Following the acquisition of Chemsil on August 30, 2013, the Company recognized an intangible asset of $34.0 million in respect of Chemsil’s product rights portfolio. This asset has an expected life of 9 years and is being amortized on a straight-line basis over this period. No residual value is anticipated. An amortization expense of $3.8 million was recognized in 2016 (2015 – $3.8 million) in selling, general and administrative expenses. Brand names Following the acquisition of Independence on October 27, 2014, the Company recognized an intangible asset of $6.0 million in respect of Independence’s brand name. This asset has an expected life of 10 years and is being amortized on a straight-line basis over this period. No residual value is anticipated. Following the acquisition of Bachman on November 4, 2013, the Company recognized an intangible asset of $2.9 million in respect of Bachman’s brand names. This asset has an expected life of 5 years and is being amortized on a straight-line basis over this period. No residual value is anticipated. An amortization expense of $1.2 million was recognized in 2016 (2015 – $1.2 million) in selling, general and administrative expenses. Technology Following the acquisition of Independence on October 27, 2014, the Company recognized an intangible asset of $26.0 million in respect of Independence’s product formulations. This asset has an expected life of 15 years and is being amortized on a straight-line basis over this period. No residual value is anticipated. Following the acquisition of Bachman on November 4, 2013, the Company recognized an intangible asset of $8.5 million in respect of Bachman’s core chemistry know-how Following the acquisition of Strata on December 24, 2012, the Company recognized an intangible asset of $18.3 million in respect of technological know-how An amortization expense of $3.4 million was recognized in 2016 (2015 – $3.4 million) in cost of goods sold. Customer relationships Following the acquisition of Independence on October 27, 2014, the Company recognized an intangible asset of $29.2 million in respect of Independence’s long-term customer relationships. This asset has a weighted average expected life of 10 years and is being amortized on a straight-line basis over this period. No residual value is anticipated. Following the acquisition of Bachman on November 4, 2013, the Company recognized an intangible asset of $14.5 million in respect of Bachman’s long-term customer relationships. This asset has a weighted average expected life of 14.5 years and is being amortized on a straight-line basis over this period. No residual value is anticipated. Following the acquisition of Strata on December 24, 2012, the Company recognized an intangible asset of $28.2 million in respect of long-term customer relationships. This asset has an expected life of 11.5 years and is being amortized on a straight-line basis over this period. No residual value is anticipated. Following the acquisition of Finetex (now merged into Innospec Active Chemicals LLC) in January 2005, the Company recognized an intangible asset of $4.2 million in relation to customer lists acquired. This asset has an expected life of 13 years and is being amortized on a straight-line basis over this period. No residual value is anticipated. An amortization expense of $6.8 million was recognized in 2016 (2015 – $6.7 million) in selling, general and administrative expenses. Non-compete Following the acquisition of Independence on October 27, 2014, the Company recognized an intangible asset of $2.6 million in respect of a non-compete Following the acquisition of Strata on December 24, 2012, the Company recognized an intangible asset of $1.5 million in respect of a non-compete An amortization expense of $0.9 million was recognized in 2016 (2015 – $0.9 million) in selling, general and administrative expenses. Marketing related An intangible asset of $28.4 million was recognized in the second quarter of 2007 in respect of Ethyl Corporation foregoing their entitlement effective April 1, 2007 to a share of the future income stream under the sales and marketing agreements to market and sell TEL. In 2008, contract provisions no longer deemed necessary of $6.3 million were offset against the intangible asset. The amount attributed to the Octane Additives reporting segment was amortized straight-line to December 31, 2013 and the amount attributed to the Fuel Specialties reporting segment is being amortized straight-line to December 31, 2017. An amortization expense of $0.9 million was recognized in 2016 (2015 - $1.0 million) in cost of goods sold. Internally developed software In November 2015 we completed the implementation of our new information system platform at the majority of reporting units across the group. At December 31, 2016 we had capitalized $36.4 million (2015 – $36.4 million) in relation to this internally developed software. This asset has an expected life of 5 years from the point in time each deployment is completed and is being amortized on a straight-line basis over these periods. No residual value is anticipated. An amortization expense of $7.3 million was recognized in 2016 (2015 – $4.0 million) in selling, general and administrative expenses. Amortization expense The aggregate of other intangible asset amortization expense was $24.2 million, $21.0 million and $17.8 million in 2016, 2015 and 2014, respectively, of which $4.3 million, $4.4 million and $3.7 million, respectively, was recognized in cost of goods sold, and the remainder was recognized in selling, general and administrative expenses. Future amortization expense is estimated to be as follows for the next five years: (in millions) 2017 $ 24.1 2018 $ 21.1 2019 $ 17.7 2020 $ 17.4 2021 $ 14.2

Pension Plans

Pension Plans	12 Months Ended
	Dec. 31, 2016
Compensation and Retirement Disclosure [Abstract]
Pension Plans	Note 9. Pension Plans United Kingdom plan The Company maintains a defined benefit pension plan (the “Plan”) covering a number of its current and former employees in the United Kingdom, although it does also have other much smaller pension arrangements in the U.S. and overseas. The Plan is closed to future service accrual but has a large number of deferred and current pensioners. The Projected Benefit Obligation (“PBO”) is based on final salary and years of credited service reduced by social security benefits according to a plan formula. Normal retirement age is 65 but provisions are made for early retirement. The Plan’s assets are invested by several investment management companies in funds holding United Kingdom and overseas equities, United Kingdom and overseas fixed interest securities, index linked securities, property unit trusts and cash or cash equivalents. The trustees’ investment policy is to seek to achieve specified objectives through investing in a suitable mixture of real and monetary assets. The trustees recognize that the returns on real assets, while expected to be greater over the long-term than those on monetary assets, are likely to be more volatile. A mixture across asset classes should nevertheless provide the level of returns required by the Plan to meet its liabilities at an acceptable level of risk for the trustees and an acceptable level of cost to the Company. In 2016, the Company contributed $1.1 million in cash to the Plan in accordance with an agreement with the trustees. (in millions) 2016 2015 2014 Plan net pension (credit)/charge: Service cost $ 1.0 $ 1.5 $ 1.7 Interest cost on PBO 20.7 27.7 34.7 Expected return on plan assets (29.9 ) (33.4 ) (37.2 ) Amortization of prior service credit (1.1 ) (1.2 ) (1.3 ) Amortization of actuarial net losses 2.6 5.2 5.4 $ (6.7 ) $ (0.2 ) $ 3.3 Plan assumptions at December 31, (%): Discount rate 2.48 3.69 3.55 Inflation rate 2.25 2.15 2.15 Rate of return on plan assets – overall on bid-value 3.20 4.20 4.05 Rate of return on plan assets – equity securities 5.80 6.65 6.50 Rate of return on plan assets – debt securities 2.05 2.85 2.75 Plan asset allocation by category (%): Equity securities 25 34 32 Debt securities 66 62 63 Cash 9 4 5 100 100 100 The discount rate used represents the annualized yield based on a cash flow matched methodology with reference to an AA corporate bond spot curve and having regard to the duration of the Plan’s liabilities. The inflation rate is derived using a similar cash flow matched methodology as used for the discount rate but having regard to the difference between yields on fixed interest and index linked United Kingdom government gilts. A 0.25% change in the discount rate assumption would change the PBO by approximately $26 million and the net pension credit for 2017 would change by approximately $0.2 million. A 0.25% change in the level of price inflation assumption would change the PBO by approximately $19 million and the net pension credit for 2016 by approximately $0.2 million. The current investment strategy of the Plan is to obtain an asset allocation of 65% debt securities and 35% equity securities in order to achieve a more predictable return on assets. As at December 31, 2016, approximately 37% (December 31, 2015 – 35%) of the Plan’s assets were held in index-tracking funds with one investment management company. Approximately 18% (December 31, 2015 – 16%) of the Plan’s assets were invested in United Kingdom government gilts. No more than 5% of the Plan’s assets were invested in any one individual company’s investment funds. Movements in PBO and fair value of Plan assets are as follows: (in millions) 2016 2015 Change in PBO: Opening balance $ 739.7 $ 817.1 Interest cost 20.7 27.7 Service cost 1.0 1.5 Benefits paid (39.7 ) (42.9 ) Actuarial losses/(gains) 119.8 (21.8 ) Exchange effect (131.3 ) (41.9 ) Closing balance $ 710.2 $ 739.7 Fair value of plan assets: Opening balance $ 795.2 $ 862.3 Actual benefits paid (39.7 ) (42.9 ) Actual contributions by employer 1.1 9.0 Actual return on assets 142.2 11.5 Exchange effect (140.6 ) (44.7 ) Closing balance $ 758.2 $ 795.2 The accumulated benefit obligation for the Plan was $710.2 million and $739.7 million at December 31, 2016 and 2015, respectively. For the vast majority of assets, a market approach is adopted to assess the fair value of the assets, with the inputs being the quoted market prices for the actual securities held in the relevant fund. Equity securities Common and preferred stock for which market prices are readily available at the measurement date are valued at the last reported sale price or official closing price on the primary market or exchange on which they are actively traded and are classified in Level 1. Fixed income securities Fixed income securities are valued based on quotations received from independent pricing services or from dealers who make markets in such securities and are classified as Level 1. Insurance contracts The Company has invested in insurance contracts, known as buy-in The fair values of pension assets by level of input were as follows: (in millions) Quoted Prices Significant Significant Total At December 31, 2016 Fixed income securities: Debt securities issued by U.S. government and government agencies $ 0.2 $ $ $ 0.2 Debt securities issued by non-U.S. 139.3 139.3 Corporate debt securities 180.8 180.8 Other asset-backed securities Equity securities: Equity securities held for proprietary investment purposes 84.2 84.2 Real estate 57.1 57.1 Insurance contracts 152.9 152.9 Investments measured at net asset value (1) 51.7 Other assets 26.2 26.2 Total assets at fair value 461.6 26.2 152.9 692.4 Cash 65.8 65.8 Total plan assets $ 527.4 $ 26.2 $ 152.9 $ 758.2 At December 31, 2015 Fixed income securities: Debt securities issued by U.S. government and government agencies $ 0.4 $ $ $ 0.4 Debt securities issued by non-U.S. 132.1 132.1 Corporate debt securities 189.7 189.7 Other asset-backed securities 0.2 0.2 Equity securities: Equity securities held for proprietary investment purposes 125.0 125.0 Real estate 64.7 64.7 Insurance contracts 171.9 171.9 Investments measured at net asset value (1) 47.6 Other assets 31.6 31.6 Total assets at fair value 512.1 31.6 171.9 763.2 Cash 32.0 32.0 Total plan assets $ 544.1 $ 31.6 $ 171.9 $ 795.2 (1) Certain investments that are measured at fair value using the net asset value per share (or its equivalent) have not been categorized in the fair value hierarchy. The fair value amounts presented in this table are intended to permit reconciliation of the fair value hierarchy to the amounts presented in the statement of financial position. The reconciliation of the fair value of the Plan assets measured using significant unobservable inputs was as follows: (in millions) Other Assets Balance at December 31, 2014 $ 0.0 Realized/unrealized gains/(losses): Relating to assets still held at the reporting date 0.0 Relating to assets sold during the period 0.0 Purchases, issuances and settlements 171.9 Exchange effect 0.0 Balance at December 31, 2015 171.9 Realized/unrealized gains/(losses): Relating to assets still held at the reporting date 16.8 Relating to assets sold during the period 0.0 Purchases, issuances and settlements (6.7 ) Exchange effect (29.1 ) Balance at December 31, 2016 $ 152.9 The projected net pension credit for the year ending December 31, 2017 is as follows: (in millions) Service cost $ 0.9 Interest cost on PBO 14.6 Expected return on plan assets (23.4 ) Amortization of prior service credit (1.0 ) Amortization of actuarial net losses 4.8 $ (4.1 ) The following benefit payments are expected to be made: (in millions) 2017 $ 34.9 2018 $ 35.4 2019 $ 35.9 2020 $ 36.4 2021 $ 36.9 2022-2026 $ 192.1 German plan The Company also maintains an unfunded defined benefit pension plan covering a number of its current and former employees in Germany (the “German plan”). The German plan is closed to new entrants and has no assets. (in millions) 2016 2015 2014 Plan net pension charge: Service cost $ 0.2 $ 0.2 $ 0.2 Interest cost on PBO 0.2 0.2 0.3 Amortization of actuarial net loss 0.2 0.3 0.1 $ 0.6 $ 0.7 $ 0.6 Plan assumptions at December 31, (%): Discount rate 1.80 2.40 2.10 Inflation rate 1.75 1.75 1.75 Rate of increase in compensation levels 2.75 2.75 2.75 Movements in PBO of the German plan are as follows: (in millions) 2016 2015 Change in PBO: Opening balance $ 9.2 $ 10.4 Service cost 0.2 0.2 Interest cost 0.2 0.2 Benefits paid (0.2 ) (0.2 ) Actuarial losses/(gains) 1.0 (0.3 ) Exchange effect (0.3 ) (1.1 ) Closing balance $ 10.1 $ 9.2 The amount of unrecognized actuarial net losses in other comprehensive loss in respect of the German plan is $2.5 million, net of tax of $0.7 million. Other plans Company contributions to defined contribution schemes during 2016 were $7.9 million (2015 – $8.5 million). The Huntsman acquisition has pension plans with a liability at December 31, 2016 of $4.1 million.

Income Taxes

Income Taxes	12 Months Ended
	Dec. 31, 2016
Income Tax Disclosure [Abstract]
Income Taxes	Note 10. Income Taxes A roll-forward of unrecognized tax benefits and associated accrued interest and penalties is as follows: (in millions) Interest and Unrecognized Total Opening balance at January 1, 2014 $ 1.1 $ 11.9 $ 13.0 Reductions for tax positions of prior periods (0.4 ) (3.6 ) (4.0 ) Additions for tax positions of prior periods 0.0 0.1 0.1 Additions for current year tax positions 0.0 0.2 0.2 Reductions due to lapsed statutes of limitations (0.2 ) (2.9 ) (3.1 ) Closing balance at December 31, 2014 0.5 5.7 6.2 Current 0.0 0.0 0.0 Non-current $ 0.5 $ 5.7 $ 6.2 Opening balance at January 1, 2015 $ 0.5 $ 5.7 $ 6.2 Reductions for tax positions of prior periods 0.0 0.0 0.0 Additions for tax positions of prior periods 0.1 0.3 0.4 Additions for current year tax positions 0.0 1.2 1.2 Reductions due to lapsed statutes of limitations (0.3 ) (3.6 ) (3.9 ) Closing balance at December 31, 2015 0.3 3.6 3.9 Current 0.0 0.0 0.0 Non-current $ 0.3 $ 3.6 $ 3.9 Opening balance at January 1, 2016 $ 0.3 $ 3.6 $ 3.9 Reductions for tax positions of prior periods (0.1 ) (0.6 ) (0.7 ) Additions for tax positions of prior periods 0.0 0.0 0.0 Additions for current year tax positions 0.0 0.0 0.0 Reductions due to lapsed statutes of limitations (0.1 ) (0.8 ) (0.9 ) Closing balance at December 31, 2016 0.1 2.2 2.3 Current 0.0 0.0 0.0 Non-current $ 0.1 $ 2.2 $ 2.3 All of the $2.3 million of unrecognized tax benefits, and interest and penalties, would impact our effective tax rate if recognized. We recognize accrued interest and penalties associated with unrecognized tax benefits as part of income taxes in our consolidated statements of income. During 2016, the Company recorded a net reduction of $1.6 million in unrecognized tax benefits and associated interest and penalties. The Company or one of its subsidiaries files income tax returns with the U.S. federal government, and various state and foreign jurisdictions. As previously disclosed, one of the Company’s U.S. subsidiaries is currently subject to a state tax examination in respect of 2012 through to 2014 inclusive. The Company currently anticipates that adjustments, if any, arising out of this tax audit would not result in a material change to the Company’s financial position as at December 31, 2016. As previously disclosed the Company’s German subsidiaries received a tax audit notification in October 2015 in respect of 2010 – 2014 inclusive. The examination was effectively settled in the fourth quarter of 2016. The additional cost to the Company was not material. The Company and its U.S. subsidiaries remain open to examination by the IRS for years 2013 onwards. The Company’s subsidiaries in foreign tax jurisdictions are open to examination including France (2013 onwards), Germany (2015 onwards), Switzerland (2015 onwards) and the United Kingdom (2015 onwards). The sources of income before income taxes were as follows: (in millions) 2016 2015 2014 Domestic $ 16.8 $ 52.7 $ 15.2 Foreign 86.3 99.6 95.7 $ 103.1 $ 152.3 $ 110.9 The components of income tax expense are summarized as follows: (in millions) 2016 2015 2014 Current: Federal $ 4.4 $ 5.2 $ 4.5 State and local 1.1 1.3 2.1 Foreign 15.3 14.3 14.9 20.8 20.8 21.5 Deferred: Federal (0.7 ) 12.8 3.3 State and local (0.3 ) 0.5 0.3 Foreign 2.0 (1.3 ) 1.7 1.0 12.0 5.3 $ 21.8 $ 32.8 $ 26.8 Cash payments for income taxes were $23.1 million, $22.5 million and $11.6 million during 2016, 2015 and 2014, respectively. The effective tax rate varies from the U.S. federal statutory rate because of the factors indicated below: 2016 2015 2014 Statutory rate 35.0 % 35.0 % 35.0 % Foreign income inclusions 1.0 1.8 5.5 Foreign tax rate differential (16.6 ) (9.6 ) (14.6 ) Tax (credit)/charge from previous years (0.7 ) (0.5 ) 4.7 Net (credit) from unrecognized tax benefits (1.6 ) (1.5 ) (6.2 ) Foreign currency transactions 2.4 (1.9 ) 1.0 United Kingdom income tax rate reduction (0.6 ) (0.7 ) 0.0 Other items and adjustments, net 2.2 (1.1 ) (1.2 ) 21.1 % 21.5 % 24.2 % The most significant factor is the mix of taxable profits generated in the different geographical jurisdictions in which the Group operates, which continues to have a significant positive impact on the effective rate. Foreign income inclusions arise each year from certain types of income earned overseas being taxable under the U.S. tax regulations. These types of income include Subpart F income, principally from foreign based company sales in the United Kingdom, including the associated Section 78 tax gross up, and also from the income earned by certain overseas subsidiaries taxable under the U.S. tax regime. Foreign income inclusions have a negative impact on the effective tax rate. Foreign tax credits can fully or partially offset these incremental U.S. taxes from foreign income inclusions. The utilization of foreign tax credits varies year on year as this is dependent on a number of variable factors which are difficult to predict and may in certain years prevent any offset of foreign tax credits. The effective rate is favorably impacted by the generation of foreign tax credits against foreign income inclusions in 2016. As a consequence of the Group having operations outside of the U.S., it is exposed to foreign currency fluctuations. These have had a negative impact on the effective rate in 2016. Other items do not have a material impact on the effective tax rate. Details of deferred tax assets and liabilities are analyzed as follows: (in millions) 2016 2015 Deferred tax assets: Stock options $ 5.5 $ 5.2 Net operating loss carry forwards 18.2 2.7 Intangible assets 3.7 3.3 Accretion expense 5.1 4.8 Other 9.5 6.0 Subtotal 42.0 22.0 Less valuation allowance 0.0 0.0 Total net deferred tax assets $ 42.0 $ 22.0 Deferred tax liabilities: Excess of book over tax basis in property, plant and equipment $ (13.0 ) $ (4.1 ) Goodwill amortization (11.3 ) (11.3 ) Intangible amortization (26.7 ) (23.4 ) Pension liabilities (8.2 ) (10.0 ) Other (0.2 ) (0.7 ) Total deferred tax liabilities $ (59.4 ) $ (49.5 ) Net deferred tax liability $ (17.4 ) $ (27.5 ) Current portion of deferred tax assets $ 0.0 $ 8.8 Deferred tax assets, net of current portion 14.9 1.4 Current portion of deferred tax liabilities 0.0 0.0 Deferred tax liabilities, net of current portion (32.3 ) (37.7 ) $ (17.4 ) $ (27.5 ) The Company evaluates deferred tax assets to determine whether it is more likely than not that they will be realized. Deferred tax assets are reviewed each period on a tax jurisdiction by tax jurisdiction basis to analyze whether there is sufficient positive or negative evidence to support realizability. As a result of the Company’s assessment of its deferred tax assets at December 31, 2016, the Company considers it more likely than not that it will recover the full benefit of its deferred tax assets and no valuation allowance is required. Should it be determined in the future that it is no longer more likely than not that these assets will be realized, a valuation allowance would be required, and the Company’s operating results would be adversely affected during the period in which such a determination would be made. Gross net operating loss carry forwards of $75.3 million result in a deferred tax asset of $18.2 million. The net operating loss carry forwards arose in the U.S. and in four of the Company’s foreign subsidiaries. Net operating loss carry forwards of $17.2 million arose from state and federal tax losses in prior and current periods in certain of the Company’s U.S. subsidiaries. It is expected that sufficient taxable profits will be generated in the U.S. against which the federal net operating loss carry forwards of $10.2 million can be relieved prior to their expiration in the period 2035 to 2036, and the state net operating loss carry forwards of $7.0 million can be relieved before their expiration in the period 2022 to 2036. The net operating loss carry forwards in two of the Company’s foreign subsidiaries totaling $58.1 million arose in prior periods and it is expected that sufficient taxable profits will be generated against which these net operating loss carry forwards can be relieved. These losses can be carried forward indefinitely without expiration. The Company is in a position to control whether or not to repatriate foreign earnings and we currently do not expect to make a repatriation in the foreseeable future. No taxes have been provided for on the unremitted earnings of our overseas subsidiaries as any tax basis differences relating to investments in these overseas subsidiaries are considered to be indefinite in duration. The amount of unremitted earnings at December 31, 2016 was approximately $788 million. If these earnings are remitted, additional taxes could result after offsetting foreign income taxes paid although the calculation of the additional taxes is not practicable to compute at this time.

Long-Term Debt

Long-Term Debt	12 Months Ended
	Dec. 31, 2016
Debt Disclosure [Abstract]
Long-Term Debt	Note 11. Long-Term Debt Long-term debt consists of the following: (in millions) 2016 2015 Revolving credit facility $ 161.0 $ 133.0 Term loan 110.0 0.0 Deferred finance costs (2.2 ) (1.4 ) 268.8 131.6 Less current portion (10.3 ) 0.0 $ 258.5 $ 131.6 On December 14, 2016, Innospec and certain subsidiaries of the Company entered into a Third Amendment and Restatement Agreement with various lenders which amends and restates the Company’s credit facility agreement dated December 14, 2011, as amended and restated on August 28, 2013 and November 6, 2015 (the “Pre-Existing Pre-Existing The Amended Credit Agreement retains the $200,000,000 revolving credit facility available to the Company and adds a term loan facility of $110,000,000. The termination date of the revolving facility remains November 6, 2020. The term loan has an $11,000,000 repayment installment due December 28, 2017, a $16,500,000 installment due December 28, 2018 and a $22,000,000 installment due December 28, 2019, with the outstanding balance due on November 6, 2020. As a result, the Company capitalized $1.2 million of refinancing costs in 2016 and $1.5 million in 2015, which are being amortized over the expected life of the facility, as shown here: (in millions) 2016 2015 Gross cost at January 1 $ 1.5 $ 2.6 Capitalized in the year 1.2 1.5 Written down in the year 0.0 (2.6 ) $ 2.7 $ 1.5 Accumulated amortization at January 1 $ (0.1 ) $ (1.5 ) Amortization in the year (0.4 ) (1.2 ) Amortization written down in the year 0.0 2.6 $ (0.5 ) $ (0.1 ) Net book value at December 31 $ 2.2 $ 1.4 Amortization expense was $0.4 million, $1.2 million and $0.7 million in 2016, 2015 and 2014, respectively. The charge is included in interest expense, see Note 2 of the Notes to the Consolidated Financial Statements. The obligations of the Company under the credit facilities are secured obligations and guaranteed by certain subsidiaries of the Company. Amounts available under the revolving facility may be borrowed in U.S. dollars, Euros, British pounds and other freely convertible currencies. The Company’s credit facilities contain restrictive clauses which may constrain our activities and limit our operational and financial flexibility. The facility obliges the lenders to comply with a request for utilization of finance unless there is an event of default outstanding. Events of default are defined in the credit facility and include a material adverse change to our assets, operations or financial condition. The facility contains a number of restrictions that limit our ability, amongst other things, and subject to certain limited exceptions, to incur additional indebtedness, pledge our assets as security, guarantee obligations of third parties, make investments, undergo a merger or consolidation, dispose of assets, or materially change our line of business. In addition, the credit facilities contain terms which, if breached, would result in it becoming repayable on demand. It requires, among other matters, compliance with the following financial covenant ratios measured on a quarterly basis: (1) the ratio of net debt to EBITDA shall not be greater than 3.0:1 and (2) the ratio of EBITDA to net interest shall not be less than 4.0:1. Management has determined that the Company has not breached these covenants throughout the period to December 31, 2016 and does not expect to breach these covenants for the next 12 months. The credit facility is secured by a number of fixed and floating charges over certain assets which include key operating sites of the Company and its subsidiaries. The weighted average rate of interest on borrowings was 1.72% at December 31, 2016 and 1.67% at December 31, 2015. Payments of interest on long-term debt were $2.6 million, $2.3 million and $2.3 million in 2016, 2015 and 2014, respectively. The net cash outflows in respect of refinancing costs were $1.2 million, $1.5 million and $0.1 million in 2016, 2015 and 2014, respectively.

Plant Closure Provisions

Plant Closure Provisions	12 Months Ended
	Dec. 31, 2016
Restructuring and Related Activities [Abstract]
Plant Closure Provisions	Note 12. Plant Closure Provisions The principal site giving rise to environmental remediation liabilities is the manufacturing site at Ellesmere Port in the United Kingdom, which management believes is the last ongoing manufacturer of TEL. There are also environmental remediation liabilities on a much smaller scale in respect of our other manufacturing sites in the U.S. and Europe. The liability for estimated closure costs of Innospec’s manufacturing facilities includes costs for decontamination and environmental remediation activities (“remediation”) when demand for TEL diminishes. Movements in the provisions are summarized as follows: (in millions) 2016 2015 2014 Total at January 1 $ 37.7 $ 34.1 $ 32.4 Charge for the period 4.7 6.8 5.0 Utilized in the period (2.7 ) (2.6 ) (2.0 ) Released in the period 0.0 0.0 (1.0 ) Disposal in the period 0.0 (0.3 ) 0.0 Exchange effect (0.2 ) (0.3 ) (0.3 ) Total at December 31 39.5 37.7 34.1 Due within one year (6.7 ) (6.4 ) (5.7 ) Due after one year $ 32.8 $ 31.3 $ 28.4 Amounts due within one year refer to provisions where expenditure is expected to arise within one year of the balance sheet date. Remediation costs are recognized in cost of goods sold. The provisions for remediation represent the Company’s liability for environmental liabilities and asset retirement obligations. The charge for the period in 2016 represents the accretion expense recognized of $3.4 million and a further $1.3 million primarily in respect of changes in the expected cost and scope of future remediation activities. A discount rate of 8.92% was used in valuing the remediation provision. We recognize environmental liabilities when they are probable and costs can be reasonably estimated, and asset retirement obligations when there is a legal obligation and costs can be reasonably estimated. The Company has to anticipate the program of work required and the associated future expected costs, and comply with environmental legislation in the countries in which it operates or has operated in. The Company views the costs of vacating our Ellesmere Port site as contingent upon if and when it vacates the site because there is no present intention to do so. Remediation expenditure utilized provisions of $2.7 million, $2.6 million and $2.0 million in 2016, 2015 and 2014, respectively.

Fair Value Measurements

Fair Value Measurements	12 Months Ended
	Dec. 31, 2016
Fair Value Disclosures [Abstract]
Fair Value Measurements	Note 13. Fair Value Measurements Fair value is the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date (exit price). The Company utilizes a mid-market The following table presents the carrying amount and fair values of the Company’s assets and liabilities measured on a recurring basis: December 31, 2016 December 31, 2015 (in millions) Carrying Amount Fair Value Carrying Amount Fair Value Assets Non-derivatives: Cash and cash equivalents $ 101.9 $ 101.9 $ 136.9 $ 136.9 Short-term investments 0.0 0.0 4.8 4.8 Derivatives (Level 1 measurement): Other non-current Interest rate swaps 0.4 0.4 0.0 0.0 Liabilities Non-derivatives: Long-term debt (including current portion) $ 268.8 $ 268.8 $ 131.6 $ 131.6 Finance leases (including current portion) 4.5 4.5 3.1 3.1 Derivatives (Level 1 measurement): Other non-current Foreign currency forward exchange contracts 0.6 0.6 0.3 0.3 Non-financial Stock equivalent units 9.8 9.8 7.8 7.8 Acquisition-related contingent consideration 1.1 1.1 54.6 54.6 The following methods and assumptions were used to estimate the fair values of financial instruments: Cash and cash equivalents, and short-term investments: Long-term debt and finance leases: Acquisition-related contingent consideration: pre-determined Derivatives: Stock equivalent units:

Derivative Instruments and Risk

Derivative Instruments and Risk Management	12 Months Ended
	Dec. 31, 2016
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivative Instruments and Risk Management	Note 14. Derivative Instruments and Risk Management The Company has limited involvement with derivative instruments and does not trade them. The Company does use derivatives to manage certain interest rate, foreign currency exchange rate and raw material cost exposures, as the need arises. The Company enters into interest rate swap contracts to reduce interest rate risk on its core debt. As at 31 December 2016, interest rate swaps with a notional value of $160,000,000 were in place. Fixed interest rates payable under the interest rate swaps vary from 1.41% to 1.67%. Interest rate swaps in place to hedge interest rate risk on the term loan are for a notional value that matches the repayment profile of the term loan. These interest rate swap contracts have been designated as hedging instruments, and their impact on other comprehensive loss for 2016 was a gain of $0.4 million. The Company enters into various foreign currency forward exchange contracts to minimize currency exchange rate exposure from expected future cash flows. As at December 31, 2016 the contracts have maturity dates of up to one year from the date of inception. These foreign currency forward exchange contracts have not been designated as hedging instruments, and their impact on the income statement for 2016 was a gain of $4.4 million. As at December 31, 2016 and December 31, 2015 the Company did not hold any raw material derivatives. The Company sells a range of specialty chemicals to major oil refineries and chemical companies throughout the world. Credit limits, ongoing credit evaluation and account monitoring procedures are intended to minimize bad debt risk. Collateral is not generally required.

Commitments and Contingencies

Commitments and Contingencies	12 Months Ended
	Dec. 31, 2016
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	Note 15. Commitments and Contingencies Operating leases The Company has commitments under operating leases primarily for office space, motor vehicles and various items of computer and office equipment. The leases are expected to be renewed and replaced in the normal course of business. Rental expense was $5.2 million in 2016, $4.5 million in 2015 and $3.7 million in 2014. Future commitments under non-cancelable (in millions) 2017 $ 4.5 2018 3.6 2019 2.2 2020 1.5 2021 1.0 Thereafter 4.5 $ 17.3 Environmental remediation obligations Commitments in respect of environmental remediation obligations are disclosed in Note 12 of the Notes to the Consolidated Financial Statements. Contingencies Legal matters While we are involved from time to time in claims and legal proceedings that result from, and are incidental to, the conduct of our business including business and commercial litigation, employee and product liability claims, there are no material pending legal proceedings to which the Company or any of its subsidiaries is a party, or of which any of their property is subject. It is possible however, that an adverse resolution of an unexpectedly large number of such individual items could in the aggregate have a material adverse effect on results of operations for a particular year or quarter. Guarantees The Company and certain of the Company’s consolidated subsidiaries are contingently liable for certain obligations of affiliated companies primarily in the form of guarantees of debt and performance under contracts entered into as a normal business practice. This includes guarantees of non-U.S. Under the terms of the guarantee arrangements, generally the Company would be required to perform should the affiliated company fail to fulfill its obligations under the arrangements. In some cases, the guarantee arrangements have recourse provisions that would enable the Company to recover any payments made under the terms of the guarantees from securities held of the guaranteed parties’ assets. The Company and its affiliates have numerous long-term sales and purchase commitments in their various business activities, which are expected to be fulfilled with no adverse consequences material to the Company.

Stockholders' Equity

Stockholders' Equity	12 Months Ended
	Dec. 31, 2016
Equity [Abstract]
Stockholders' Equity	Note 16. Stockholders’ Equity Common Stock Treasury Stock (number of shares in thousands) 2016 2015 2014 2016 2015 2014 At January 1 29,555 29,555 29,555 5,453 5,263 5,208 Exercise of options 0 0 0 (152 ) (152 ) (105 ) Stock purchases 0 0 0 182 342 160 At December 31 29,555 29,555 29,555 5,483 5,453 5,263 At December 31, 2016, the Company had authorized common stock of 40,000,000 shares (2015 – 40,000,000). Issued shares at December 31, 2016, were 29,554,500 (2015 – 29,554,500) and treasury stock amounted to 5,483,341 shares (2015 – 5,453,078).

Stock-Based Compensation Plans

Stock-Based Compensation Plans	12 Months Ended
	Dec. 31, 2016
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Stock-Based Compensation Plans	Note 17. Stock-Based Compensation Plans Stock option plans The Company has five active stock option plans, two of which provide for the grant of stock options to employees, one provides for the grant of stock options to non-employee pre-defined The fair value of stock options is measured on the grant date using either the Black-Scholes model, or in cases where performance criteria are dependent upon external factors such as the Company’s stock price, using a Monte Carlo model. The following weighted average assumptions were used to determine the grant-date fair value of options: 2016 2015 2014 Dividend yield 1.38 % 1.03 % 1.34 % Expected life 5 years 5 years 5 years Volatility 25.11 % 25.5 % 30.7 % Risk free interest rate 0.91 % 1.05 % 0.97 % The following table summarizes the transactions of the Company’s stock option plans for the year ended December 31, 2016: Number of Weighted Weighted Grant-Date Outstanding at December 31, 2015 667,439 $ 19.87 $ 20.19 Granted – at discount 67,546 $ 0.00 $ 38.13 – at market value 24,794 $ 44.34 $ 9.17 Exercised (151,164 ) $ 14.38 $ 19.63 Forfeited (37,621 ) $ 14.49 $ 24.83 Outstanding at December 31, 2016 570,994 $ 20.38 $ 21.68 At December 31, 2016, there were 68,796 stock options that were exercisable, 20,417 had performance conditions attached. The Company’s policy is to issue shares from treasury stock to holders of stock options who exercise those options, but if sufficient treasury stock is not available, the Company will issue previously unissued shares of stock to holders of stock options who exercise options. The stock option compensation cost for 2016, 2015 and 2014 was $3.3 million, $3.7 million and $2.6 million, respectively. The total intrinsic value of options exercised in 2016, 2015 and 2014 was $2.8 million, $2.4 million and $0.9 million, respectively. The total compensation cost related to non-vested The cash tax benefit realized from stock option exercises totaled $0.9 million, $1.3 million and $0.9 million in 2016, 2015 and 2014, respectively. The excess tax benefit classified in financing activities was $1.0 million, $0.5 million and $0.4 million in 2016, 2015 and 2014, respectively. No stock options awards were modified in 2016, 2015 or 2014. Stock equivalent units The Company awards Stock Equivalent Units (“SEUs”) from time to time as a long-term performance incentive. SEUs are cash settled equity instruments conditional on certain performance criteria and linked to the Innospec Inc. share price. SEUs have vesting periods ranging from 11 months to 4 years and in all cases SEUs granted expire within 10 years of the date of grant. Grants may be priced at market value or at a premium or discount. There is no limit to the number of SEUs that can be granted. As at December 31, 2016 the liability for SEUs of $9.8 million is located in accrued liabilities in the consolidated balance sheets until they are cash settled. The fair value of SEUs is measured at the balance sheet date using either the Black-Scholes model, or in cases where performance criteria are dependent upon external factors such as the Company’s stock price, using a Monte Carlo model. The following assumptions were used to determine the fair value of SEUs at the balance sheet dates: 2016 2015 2014 Dividend yield 0.98 % 1.12 % 1.29 % Volatility 25.2 % 24.6 % 26.0 % Risk free interest rate 1.47 % 1.31 % 1.10 % The following table summarizes the transactions of the Company’s SEUs for the year ended December 31, 2016: Number Weighted Weighted Grant-Date Outstanding at December 31, 2015 279,750 $ 3.79 $ 31.72 Granted – at discount 70,153 $ 0.00 $ 36.05 – at market value 7,316 $ 44.18 $ 9.11 Exercised (66,424 ) $ 4.32 $ 27.28 Forfeited (10,980 ) $ 3.61 $ 31.66 Outstanding at December 31, 2016 279,815 $ 3.77 $ 33.40 At December 31, 2016, there were 48,964 SEUs that were exercisable, 46,260 had performance conditions attached. The charges for SEUs are spread over the life of the award subject to a revaluation to fair value each quarter. The revaluation may result in a charge or a credit to the income statement in the quarter dependent upon our share price and other performance criteria. The SEU compensation cost for 2016, 2015 and 2014 was $4.7 million, $4.9 million and $2.0 million, respectively. The total intrinsic value of SEUs exercised in 2016, 2015 and 2014 was $1.8 million, $2.4 million and $3.7 million, respectively. The weighted-average remaining vesting period of non-vested Additional exceptional long-term incentive plan In the first quarter of 2014, Innospec implemented an additional exceptional long-term incentive plan to reward selected executives with a cash bonus for delivering exceptional performance. One of the elements of the plan is payable only if the Innospec share performance matches or out-performs

Reclassifications out of Accumu

Reclassifications out of Accumulated Other Comprehensive Loss	12 Months Ended
	Dec. 31, 2016
Equity [Abstract]
Reclassifications out of Accumulated Other Comprehensive Loss	Note 18. Reclassifications out of Accumulated Other Comprehensive Loss Reclassifications out of accumulated other comprehensive loss for 2016 were: (in millions) Amount Affected Line Item in the Details about AOCL Components Defined benefit pension plan items: Amortization of prior service credit $ (1.1 ) See (1) below Amortization of actuarial net losses 2.6 See (1) below 1.5 Total before tax (0.3 ) Income tax expense 1.2 Net of tax Total reclassifications $ 1.2 Net of tax (1) These items are included in the computation of net periodic pension cost. See Note 9 of the Notes to the Consolidated Financial Statements for additional information. Changes in accumulated other comprehensive loss for 2016, net of tax, were: (in millions) Derivative Instruments Defined Cumulative Total Balance at December 31, 2015 $ 0.0 $ (50.9 ) $ (60.0 ) $ (110.9 ) Other comprehensive income/(loss) before reclassifications 0.3 0.0 (20.5 ) (20.2 ) Amounts reclassified from AOCL 0.0 1.2 0.0 1.2 Actuarial net gains arising during the year 0.0 3.7 0.0 3.7 Net current period other comprehensive income/(loss) 0.3 4.9 (20.5 ) (15.3 ) Balance at December 31, 2016 $ 0.3 $ (46.0 ) $ (80.5 ) $ (126.2 )

Recently Issued Accounting Pron

Recently Issued Accounting Pronouncements	12 Months Ended
	Dec. 31, 2016
Accounting Changes and Error Corrections [Abstract]
Recently Issued Accounting Pronouncements	Note 19. Recently Issued Accounting Pronouncements In May 2014, the FASB issued ASU No. 2014-09, 2014-09”), 2014-09 2015-09 No. 2015-14, 2014-09 2014-09. In November 2015, the FASB issued Accounting Standards Update (ASU) No. 2015-17, 2015-17 2015-17 2015-17 2015-17 In February 2016, the FASB issued Accounting Standards Update (ASU) 2016-02, right-of-use In March 2016, the FASB issued Accounting Standards Update (ASU) 2016-09, 2016-09 In October 2016, the FASB issued Accounting Standards Update (ASU) 2016-16, 2016-16 2016-16

Related Party Transactions

Related Party Transactions	12 Months Ended
	Dec. 31, 2016
Related Party Transactions [Abstract]
Related Party Transactions	Note 20. Related Party Transactions Mr. Robert I. Paller has been a non-executive

Subsequent Events

Subsequent Events	12 Months Ended
	Dec. 31, 2016
Subsequent Events [Abstract]
Subsequent Events	Note 21. Subsequent Events The Company has evaluated subsequent events through the date that the consolidated financial statements were issued, and has concluded that no additional disclosures are required in relation to events subsequent to the balance sheet date.

Accounting Policies (Policies)

Accounting Policies (Policies)	12 Months Ended
	Dec. 31, 2016
Accounting Policies [Abstract]
Basis of preparation	Basis of preparation:
Use of estimates	Use of estimates:
Cash equivalents	Cash equivalents:
Short-term investments	Short-term investments:
Trade and other accounts receivable	Trade and other accounts receivable:
Inventories	Inventories:
Property, plant and equipment	Property, plant and equipment: Buildings 7 to 25 years Equipment 3 to 10 years
Goodwill and other intangible assets	Goodwill and other intangible assets: two-step two-step post-tax
Deferred finance costs	Deferred finance costs: re-statement
Impairment of long-lived assets	Impairment of long-lived assets: post-tax
Derivative instruments	Derivative instruments: non-current
Environmental compliance and remediation	Environmental compliance and remediation:
Acquisition-related contingent consideration	Acquisition-related contingent consideration:
Revenue recognition	Revenue recognition:
Components of net sales	Components of net sales:
Components of cost of goods sold	Components of cost of goods sold: non-recoverable
Components of selling, general and administrative expenses	Components of selling, general and administrative expenses:
Research and development expenses	Research and development expenses:
Earnings per share	Earnings per share:
Foreign currencies	Foreign currencies:
Stock-based compensation plans	Stock-based compensation plans:
Pension plans and other post-employment benefits	Pension plans and other post-employment benefits: year-end.
Income taxes	Income taxes:

Accounting Policies (Tables)

Accounting Policies (Tables)	12 Months Ended
	Dec. 31, 2016
Accounting Policies [Abstract]
Estimated Useful Lives of Major Classes of Depreciable Assets	The estimated useful lives of the major classes of depreciable assets are as follows: Buildings 7 to 25 years Equipment 3 to 10 years

Segment Reporting and Geograp36

Segment Reporting and Geographical Area Data (Tables)	12 Months Ended
	Dec. 31, 2016
Segment Reporting [Abstract]
Segment Reporting	The following table analyzes sales and other financial information by the Company’s reportable segments: (in millions) 2016 2015 2014 Net Sales: Refinery and Performance $ 388.9 $ 408.0 $ 440.2 Other 120.7 124.8 126.6 Fuel Specialties 509.6 532.8 566.8 Personal Care 126.8 119.6 106.1 Fragrances 0.1 23.0 56.2 Other 11.8 12.4 15.3 Performance Chemicals 138.7 155.0 177.6 Oilfield Services 191.7 265.0 161.3 Octane Additives 43.4 59.5 55.2 $ 883.4 $ 1,012.3 $ 960.9 (in millions) 2016 2015 2014 Gross profit: Fuel Specialties $ 186.4 $ 176.0 $ 170.8 Performance Chemicals 43.4 42.4 43.7 Oilfield Services 76.4 99.1 58.9 Octane Additives 26.1 28.5 28.6 $ 332.3 $ 346.0 $ 302.0 Operating income: Fuel Specialties $ 110.6 $ 102.1 $ 94.2 Performance Chemicals 16.0 16.3 17.8 Oilfield Services (4.7 ) 9.0 18.0 Octane Additives 22.7 24.7 22.6 Pension credit/(charge) 6.7 0.2 (3.3 ) Corporate costs (53.9 ) (38.3 ) (38.7 ) Adjustment to fair value of contingent consideration 9.4 40.7 1.9 (Loss)/profit on disposal of subsidiary (1.4 ) 1.6 0.0 Total operating income $ 105.4 $ 156.3 $ 112.5 Identifiable assets at year end: Fuel Specialties $ 397.2 $ 408.9 $ 408.2 Performance Chemicals 340.0 120.2 156.6 Oilfield Services 240.0 240.9 293.1 Octane Additives 38.1 28.7 29.2 Corporate 166.1 229.9 112.8 $ 1,181.4 $ 1,028.6 $ 999.9
Segment Reporting on Basis of Geographical Location	The following tables analyze sales and other financial information by location: (in millions) 2016 2015 2014 Net sales by source: United States $ 474.4 $ 571.9 $ 468.6 United Kingdom 428.2 445.2 486.1 Rest of Europe 118.5 133.3 146.9 Rest of World 31.1 22.1 21.4 Sales between areas (168.8 ) (160.2 ) (162.1 ) $ 883.4 $ 1,012.3 $ 960.9 Income before income taxes: United States $ 16.8 $ 52.7 $ 15.2 United Kingdom 42.6 60.6 57.8 Rest of Europe 39.2 42.0 39.3 Rest of World 4.5 (3.0 ) (1.4 ) $ 103.1 $ 152.3 $ 110.9 Long-lived assets at year end: United States $ 155.3 $ 185.8 $ 197.9 United Kingdom 45.9 49.3 54.1 Rest of Europe 207.5 10.6 10.4 Rest of World 0.5 0.4 0.6 $ 409.2 $ 246.1 $ 263.0 Identifiable assets at year end: United States $ 377.3 $ 410.9 $ 449.3 United Kingdom 257.6 303.4 216.4 Rest of Europe 156.0 30.9 39.0 Rest of World 15.7 16.0 19.1 Goodwill 374.8 267.4 276.1 $ 1,181.4 $ 1,028.6 $ 999.9

Acquisition of European Diffe37

Acquisition of European Differentiated Surfactants business (Tables)	12 Months Ended
	Dec. 31, 2016
Business Combinations [Abstract]
Schedule of Total Purchase Price and Estimated Allocation of Purchase Price to Assets Acquired and Liabilities Assumed	The following table summarizes the calculations of the total purchase price and the estimated allocation of the purchase price to the assets acquired and liabilities assumed for the business: (in millions) Huntsman Goodwill and other intangible assets $ 107.4 Fixed assets 76.5 Other net assets acquired 15.3 Purchase price, net of cash acquired $ 199.2
Unaudited Pro Forma Financial Information	For illustrative purposes only pro forma information of the enlarged group is provided below but is not necessarily indicative of what the financial position or results of operations would have been had the Huntsman EDS acquisition been completed as part of the Company from January 1, 2015. In addition, the unaudited pro forma financial information is not indicative of, nor does it purport to project, the future financial position of operating results of the enlarged group. (in millions, except per share data) 2016 2015 Net sales $ 1,008.0 $ 1,269.8 Net income $ 88.5 $ 121.8 Earnings per share – basic $ 3.69 $ 5.06 – diluted $ 3.62 $ 4.95

Earnings Per Share (Tables)

Earnings Per Share (Tables)	12 Months Ended
	Dec. 31, 2016
Earnings Per Share [Abstract]
Summary of Earnings Per Share	Per share amounts are computed as follows: 2016 2015 2014 Numerator (in millions): Net income available to common stockholders $ 81.3 $ 119.5 $ 84.1 Denominator (in thousands): Weighted average common shares outstanding 23,998 24,107 24,391 Dilutive effect of stock options and awards 444 505 487 Denominator for diluted earnings per share 24,442 24,612 24,878 Net income per share, basic: $ 3.39 $ 4.96 $ 3.45 Net income per share, diluted: $ 3.33 $ 4.86 $ 3.38

Property, Plant and Equipment (

Property, Plant and Equipment (Tables)	12 Months Ended
	Dec. 31, 2016
Property, Plant and Equipment [Abstract]
Schedule of Property, Plant and Equipment	Property, plant and equipment consists of the following: (in millions) 2016 2015 Land $ 7.2 $ 6.2 Buildings 37.8 21.6 Equipment 192.6 128.0 Work in progress 14.2 5.2 251.8 161.0 Less accumulated depreciation (94.4 ) (85.0 ) $ 157.4 $ 76.0

Goodwill (Tables)

Goodwill (Tables)	12 Months Ended
	Dec. 31, 2016
Goodwill and Intangible Assets Disclosure [Abstract]
Summary of Goodwill	The following table analyzes goodwill for 2016 and 2015. (in millions) Fuel Performance Oilfield Octane Total At December 31, 2014 Gross cost (1) $ 209.0 $ 29.8 $ 37.3 $ 236.5 $ 512.6 Accumulated impairment losses 0.0 0.0 0.0 (236.5 ) (236.5 ) Net book amount $ 209.0 $ 29.8 $ 37.3 $ 0.0 $ 276.1 Exchange effect (0.2 ) 0.0 0.0 0.0 (0.2 ) Adjustment (0.9 ) 0.0 0.0 0.0 (0.9 ) Disposals 0.0 (7.6 ) 0.0 0.0 (7.6 ) At December 31, 2015 Gross cost (1) $ 207.9 $ 22.2 $ 37.3 $ 236.5 $ 503.9 Accumulated impairment losses 0.0 0.0 0.0 (236.5 ) (236.5 ) Net book amount $ 207.9 $ 22.2 $ 37.3 $ 0.0 $ 267.4 Additions 0.0 107.4 0.0 0.0 107.4 At December 31, 2016 Gross cost (1) $ 207.9 $ 129.6 $ 37.3 $ 236.5 $ 611.3 Accumulated impairment losses 0.0 0.0 0.0 (236.5 ) (236.5 ) Net book amount $ 207.9 $ 129.6 $ 37.3 $ 0.0 $ 374.8 (1) Gross cost is net of $8.7 million, $0.3 million and $289.5 million of historical accumulated amortization in respect of the Fuel Specialties, Performance Chemicals and Octane Additives reporting segments, respectively

Other Intangible Assets (Tables

Other Intangible Assets (Tables)	12 Months Ended
	Dec. 31, 2016
Goodwill and Intangible Assets Disclosure [Abstract]
Summary of Other Intangible Assets	Other intangible assets comprise the following: (in millions) 2016 2015 Gross cost: – Product rights $ 34.0 $ 34.0 – Brand names 8.9 8.9 – Technology 55.1 55.1 – Customer relationships 85.1 85.1 – Patents 2.9 2.9 – Non-compete agreements 4.1 4.1 – Marketing related 22.1 22.1 – Internally developed software 36.4 36.4 248.6 248.6 Accumulated amortization: – Product rights (12.6 ) (8.8 ) – Brand names (3.2 ) (2.0 ) – Technology (12.3 ) (8.9 ) – Customer relationships (32.5 ) (25.7 ) – Patents (2.9 ) (2.9 ) – Non-compete agreements (3.4 ) (2.5 ) – Marketing related (21.2 ) (20.3 ) – Internally developed software (16.1 ) (8.8 ) (104.2 ) (79.9 ) $ 144.4 $ 168.7
Schedule of Future Amortization Estimated Expense	Future amortization expense is estimated to be as follows for the next five years: (in millions) 2017 $ 24.1 2018 $ 21.1 2019 $ 17.7 2020 $ 17.4 2021 $ 14.2

Pension Plans (Tables)

Pension Plans (Tables)	12 Months Ended
	Dec. 31, 2016
United Kingdom Plan [Member]
Defined Benefit Pension Plan	(in millions) 2016 2015 2014 Plan net pension (credit)/charge: Service cost $ 1.0 $ 1.5 $ 1.7 Interest cost on PBO 20.7 27.7 34.7 Expected return on plan assets (29.9 ) (33.4 ) (37.2 ) Amortization of prior service credit (1.1 ) (1.2 ) (1.3 ) Amortization of actuarial net losses 2.6 5.2 5.4 $ (6.7 ) $ (0.2 ) $ 3.3 Plan assumptions at December 31, (%): Discount rate 2.48 3.69 3.55 Inflation rate 2.25 2.15 2.15 Rate of return on plan assets – overall on bid-value 3.20 4.20 4.05 Rate of return on plan assets – equity securities 5.80 6.65 6.50 Rate of return on plan assets – debt securities 2.05 2.85 2.75 Plan asset allocation by category (%): Equity securities 25 34 32 Debt securities 66 62 63 Cash 9 4 5 100 100 100
Movements in PBO and Fair Value of Plan Assets	Movements in PBO and fair value of Plan assets are as follows: (in millions) 2016 2015 Change in PBO: Opening balance $ 739.7 $ 817.1 Interest cost 20.7 27.7 Service cost 1.0 1.5 Benefits paid (39.7 ) (42.9 ) Actuarial losses/(gains) 119.8 (21.8 ) Exchange effect (131.3 ) (41.9 ) Closing balance $ 710.2 $ 739.7 Fair value of plan assets: Opening balance $ 795.2 $ 862.3 Actual benefits paid (39.7 ) (42.9 ) Actual contributions by employer 1.1 9.0 Actual return on assets 142.2 11.5 Exchange effect (140.6 ) (44.7 ) Closing balance $ 758.2 $ 795.2
Fair Value of Pension Assets	The fair values of pension assets by level of input were as follows: (in millions) Quoted Prices Significant Significant Total At December 31, 2016 Fixed income securities: Debt securities issued by U.S. government and government agencies $ 0.2 $ $ $ 0.2 Debt securities issued by non-U.S. 139.3 139.3 Corporate debt securities 180.8 180.8 Other asset-backed securities Equity securities: Equity securities held for proprietary investment purposes 84.2 84.2 Real estate 57.1 57.1 Insurance contracts 152.9 152.9 Investments measured at net asset value (1) 51.7 Other assets 26.2 26.2 Total assets at fair value 461.6 26.2 152.9 692.4 Cash 65.8 65.8 Total plan assets $ 527.4 $ 26.2 $ 152.9 $ 758.2 At December 31, 2015 Fixed income securities: Debt securities issued by U.S. government and government agencies $ 0.4 $ $ $ 0.4 Debt securities issued by non-U.S. 132.1 132.1 Corporate debt securities 189.7 189.7 Other asset-backed securities 0.2 0.2 Equity securities: Equity securities held for proprietary investment purposes 125.0 125.0 Real estate 64.7 64.7 Insurance contracts 171.9 171.9 Investments measured at net asset value (1) 47.6 Other assets 31.6 31.6 Total assets at fair value 512.1 31.6 171.9 763.2 Cash 32.0 32.0 Total plan assets $ 544.1 $ 31.6 $ 171.9 $ 795.2 (1) Certain investments that are measured at fair value using the net asset value per share (or its equivalent) have not been categorized in the fair value hierarchy. The fair value amounts presented in this table are intended to permit reconciliation of the fair value hierarchy to the amounts presented in the statement of financial position.
Reconciliation of Fair Value of Plan Assets Measured Using Significant Unobservable Inputs	The reconciliation of the fair value of the Plan assets measured using significant unobservable inputs was as follows: (in millions) Other Assets Balance at December 31, 2014 $ 0.0 Realized/unrealized gains/(losses): Relating to assets still held at the reporting date 0.0 Relating to assets sold during the period 0.0 Purchases, issuances and settlements 171.9 Exchange effect 0.0 Balance at December 31, 2015 171.9 Realized/unrealized gains/(losses): Relating to assets still held at the reporting date 16.8 Relating to assets sold during the period 0.0 Purchases, issuances and settlements (6.7 ) Exchange effect (29.1 ) Balance at December 31, 2016 $ 152.9
Plan Net Pension Credit	The projected net pension credit for the year ending December 31, 2017 is as follows: (in millions) Service cost $ 0.9 Interest cost on PBO 14.6 Expected return on plan assets (23.4 ) Amortization of prior service credit (1.0 ) Amortization of actuarial net losses 4.8 $ (4.1 )
Expected Benefit Payments	The following benefit payments are expected to be made: (in millions) 2017 $ 34.9 2018 $ 35.4 2019 $ 35.9 2020 $ 36.4 2021 $ 36.9 2022-2026 $ 192.1
German Plan [Member]
Movements in PBO and Fair Value of Plan Assets	Movements in PBO of the German plan are as follows: (in millions) 2016 2015 Change in PBO: Opening balance $ 9.2 $ 10.4 Service cost 0.2 0.2 Interest cost 0.2 0.2 Benefits paid (0.2 ) (0.2 ) Actuarial losses/(gains) 1.0 (0.3 ) Exchange effect (0.3 ) (1.1 ) Closing balance $ 10.1 $ 9.2
Unfunded Defined Benefit Pension Plan	(in millions) 2016 2015 2014 Plan net pension charge: Service cost $ 0.2 $ 0.2 $ 0.2 Interest cost on PBO 0.2 0.2 0.3 Amortization of actuarial net loss 0.2 0.3 0.1 $ 0.6 $ 0.7 $ 0.6 Plan assumptions at December 31, (%): Discount rate 1.80 2.40 2.10 Inflation rate 1.75 1.75 1.75 Rate of increase in compensation levels 2.75 2.75 2.75

Income Taxes (Tables)

Income Taxes (Tables)	12 Months Ended
	Dec. 31, 2016
Income Tax Disclosure [Abstract]
Roll-Forward of Unrecognized Tax Benefits and Associated Accrued Interest and Penalties	A roll-forward of unrecognized tax benefits and associated accrued interest and penalties is as follows: (in millions) Interest and Unrecognized Total Opening balance at January 1, 2014 $ 1.1 $ 11.9 $ 13.0 Reductions for tax positions of prior periods (0.4 ) (3.6 ) (4.0 ) Additions for tax positions of prior periods 0.0 0.1 0.1 Additions for current year tax positions 0.0 0.2 0.2 Reductions due to lapsed statutes of limitations (0.2 ) (2.9 ) (3.1 ) Closing balance at December 31, 2014 0.5 5.7 6.2 Current 0.0 0.0 0.0 Non-current $ 0.5 $ 5.7 $ 6.2 Opening balance at January 1, 2015 $ 0.5 $ 5.7 $ 6.2 Reductions for tax positions of prior periods 0.0 0.0 0.0 Additions for tax positions of prior periods 0.1 0.3 0.4 Additions for current year tax positions 0.0 1.2 1.2 Reductions due to lapsed statutes of limitations (0.3 ) (3.6 ) (3.9 ) Closing balance at December 31, 2015 0.3 3.6 3.9 Current 0.0 0.0 0.0 Non-current $ 0.3 $ 3.6 $ 3.9 Opening balance at January 1, 2016 $ 0.3 $ 3.6 $ 3.9 Reductions for tax positions of prior periods (0.1 ) (0.6 ) (0.7 ) Additions for tax positions of prior periods 0.0 0.0 0.0 Additions for current year tax positions 0.0 0.0 0.0 Reductions due to lapsed statutes of limitations (0.1 ) (0.8 ) (0.9 ) Closing balance at December 31, 2016 0.1 2.2 2.3 Current 0.0 0.0 0.0 Non-current $ 0.1 $ 2.2 $ 2.3
Sources of Income before Income Taxes	The sources of income before income taxes were as follows: (in millions) 2016 2015 2014 Domestic $ 16.8 $ 52.7 $ 15.2 Foreign 86.3 99.6 95.7 $ 103.1 $ 152.3 $ 110.9
Components of Income Tax Expense	The components of income tax expense are summarized as follows: (in millions) 2016 2015 2014 Current: Federal $ 4.4 $ 5.2 $ 4.5 State and local 1.1 1.3 2.1 Foreign 15.3 14.3 14.9 20.8 20.8 21.5 Deferred: Federal (0.7 ) 12.8 3.3 State and local (0.3 ) 0.5 0.3 Foreign 2.0 (1.3 ) 1.7 1.0 12.0 5.3 $ 21.8 $ 32.8 $ 26.8
Factors Effecting Effective Tax Rate from U.S. Federal Statutory Rate	The effective tax rate varies from the U.S. federal statutory rate because of the factors indicated below: 2016 2015 2014 Statutory rate 35.0 % 35.0 % 35.0 % Foreign income inclusions 1.0 1.8 5.5 Foreign tax rate differential (16.6 ) (9.6 ) (14.6 ) Tax (credit)/charge from previous years (0.7 ) (0.5 ) 4.7 Net (credit) from unrecognized tax benefits (1.6 ) (1.5 ) (6.2 ) Foreign currency transactions 2.4 (1.9 ) 1.0 United Kingdom income tax rate reduction (0.6 ) (0.7 ) 0.0 Other items and adjustments, net 2.2 (1.1 ) (1.2 ) 21.1 % 21.5 % 24.2 %
Details of Deferred Tax Assets and Liabilities	Details of deferred tax assets and liabilities are analyzed as follows: (in millions) 2016 2015 Deferred tax assets: Stock options $ 5.5 $ 5.2 Net operating loss carry forwards 18.2 2.7 Intangible assets 3.7 3.3 Accretion expense 5.1 4.8 Other 9.5 6.0 Subtotal 42.0 22.0 Less valuation allowance 0.0 0.0 Total net deferred tax assets $ 42.0 $ 22.0 Deferred tax liabilities: Excess of book over tax basis in property, plant and equipment $ (13.0 ) $ (4.1 ) Goodwill amortization (11.3 ) (11.3 ) Intangible amortization (26.7 ) (23.4 ) Pension liabilities (8.2 ) (10.0 ) Other (0.2 ) (0.7 ) Total deferred tax liabilities $ (59.4 ) $ (49.5 ) Net deferred tax liability $ (17.4 ) $ (27.5 ) Current portion of deferred tax assets $ 0.0 $ 8.8 Deferred tax assets, net of current portion 14.9 1.4 Current portion of deferred tax liabilities 0.0 0.0 Deferred tax liabilities, net of current portion (32.3 ) (37.7 ) $ (17.4 ) $ (27.5 )

Long-Term Debt (Tables)

Long-Term Debt (Tables)	12 Months Ended
	Dec. 31, 2016
Debt Disclosure [Abstract]
Schedule of Long-Term Debt	Long-term debt consists of the following: (in millions) 2016 2015 Revolving credit facility $ 161.0 $ 133.0 Term loan 110.0 0.0 Deferred finance costs (2.2 ) (1.4 ) 268.8 131.6 Less current portion (10.3 ) 0.0 $ 258.5 $ 131.6
Summary of Debt Refinancing Costs	As a result, the Company capitalized $1.2 million of refinancing costs in 2016 and $1.5 million in 2015, which are being amortized over the expected life of the facility, as shown here: (in millions) 2016 2015 Gross cost at January 1 $ 1.5 $ 2.6 Capitalized in the year 1.2 1.5 Written down in the year 0.0 (2.6 ) $ 2.7 $ 1.5 Accumulated amortization at January 1 $ (0.1 ) $ (1.5 ) Amortization in the year (0.4 ) (1.2 ) Amortization written down in the year 0.0 2.6 $ (0.5 ) $ (0.1 ) Net book value at December 31 $ 2.2 $ 1.4

Plant Closure Provisions (Table

Plant Closure Provisions (Tables)	12 Months Ended
	Dec. 31, 2016
Restructuring and Related Activities [Abstract]
Movements in Plant Closure and Restructuring Provisions	Movements in the provisions are summarized as follows: (in millions) 2016 2015 2014 Total at January 1 $ 37.7 $ 34.1 $ 32.4 Charge for the period 4.7 6.8 5.0 Utilized in the period (2.7 ) (2.6 ) (2.0 ) Released in the period 0.0 0.0 (1.0 ) Disposal in the period 0.0 (0.3 ) 0.0 Exchange effect (0.2 ) (0.3 ) (0.3 ) Total at December 31 39.5 37.7 34.1 Due within one year (6.7 ) (6.4 ) (5.7 ) Due after one year $ 32.8 $ 31.3 $ 28.4

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	12 Months Ended
	Dec. 31, 2016
Fair Value Disclosures [Abstract]
Carrying Amount and Fair Values of the Company's Assets and Liabilities Measured on a Recurring Basis	The following table presents the carrying amount and fair values of the Company’s assets and liabilities measured on a recurring basis: December 31, 2016 December 31, 2015 (in millions) Carrying Amount Fair Value Carrying Amount Fair Value Assets Non-derivatives: Cash and cash equivalents $ 101.9 $ 101.9 $ 136.9 $ 136.9 Short-term investments 0.0 0.0 4.8 4.8 Derivatives (Level 1 measurement): Other non-current Interest rate swaps 0.4 0.4 0.0 0.0 Liabilities Non-derivatives: Long-term debt (including current portion) $ 268.8 $ 268.8 $ 131.6 $ 131.6 Finance leases (including current portion) 4.5 4.5 3.1 3.1 Derivatives (Level 1 measurement): Other non-current Foreign currency forward exchange contracts 0.6 0.6 0.3 0.3 Non-financial Stock equivalent units 9.8 9.8 7.8 7.8 Acquisition-related contingent consideration 1.1 1.1 54.6 54.6

Commitments and Contingencies (

Commitments and Contingencies (Tables)	12 Months Ended
	Dec. 31, 2016
Commitments and Contingencies Disclosure [Abstract]
Future Commitments under Non-Cancelable Operating Leases	Future commitments under non-cancelable (in millions) 2017 $ 4.5 2018 3.6 2019 2.2 2020 1.5 2021 1.0 Thereafter 4.5 $ 17.3

Stockholders' Equity (Tables)

Stockholders' Equity (Tables)	12 Months Ended
	Dec. 31, 2016
Equity [Abstract]
Stockholders' Equity	Common Stock Treasury Stock (number of shares in thousands) 2016 2015 2014 2016 2015 2014 At January 1 29,555 29,555 29,555 5,453 5,263 5,208 Exercise of options 0 0 0 (152 ) (152 ) (105 ) Stock purchases 0 0 0 182 342 160 At December 31 29,555 29,555 29,555 5,483 5,453 5,263

Stock-Based Compensation Plans

Stock-Based Compensation Plans (Tables)	12 Months Ended
	Dec. 31, 2016
Stock Options Plan [Member]
Assumptions Used to Determine Grant-Date Fair Value of Options	The following weighted average assumptions were used to determine the grant-date fair value of options: 2016 2015 2014 Dividend yield 1.38 % 1.03 % 1.34 % Expected life 5 years 5 years 5 years Volatility 25.11 % 25.5 % 30.7 % Risk free interest rate 0.91 % 1.05 % 0.97 %
Summary of Transactions of Company's Stock Option Plans	The following table summarizes the transactions of the Company’s stock option plans for the year ended December 31, 2016: Number of Weighted Weighted Grant-Date Outstanding at December 31, 2015 667,439 $ 19.87 $ 20.19 Granted – at discount 67,546 $ 0.00 $ 38.13 – at market value 24,794 $ 44.34 $ 9.17 Exercised (151,164 ) $ 14.38 $ 19.63 Forfeited (37,621 ) $ 14.49 $ 24.83 Outstanding at December 31, 2016 570,994 $ 20.38 $ 21.68
Stock Equivalent Units [Member]
Assumptions Used to Determine Fair Value of SEUs	The following assumptions were used to determine the fair value of SEUs at the balance sheet dates: 2016 2015 2014 Dividend yield 0.98 % 1.12 % 1.29 % Volatility 25.2 % 24.6 % 26.0 % Risk free interest rate 1.47 % 1.31 % 1.10 %
Summarizes Transactions of SEUs	The following table summarizes the transactions of the Company’s SEUs for the year ended December 31, 2016: Number Weighted Weighted Grant-Date Outstanding at December 31, 2015 279,750 $ 3.79 $ 31.72 Granted – at discount 70,153 $ 0.00 $ 36.05 – at market value 7,316 $ 44.18 $ 9.11 Exercised (66,424 ) $ 4.32 $ 27.28 Forfeited (10,980 ) $ 3.61 $ 31.66 Outstanding at December 31, 2016 279,815 $ 3.77 $ 33.40

Reclassifications out of Accu50

Reclassifications out of Accumulated Other Comprehensive Loss (Tables)	12 Months Ended
	Dec. 31, 2016
Equity [Abstract]
Summary of Reclassifications Out of Accumulated Other Comprehensive Loss	Reclassifications out of accumulated other comprehensive loss for 2016 were: (in millions) Amount Affected Line Item in the Details about AOCL Components Defined benefit pension plan items: Amortization of prior service credit $ (1.1 ) See (1) below Amortization of actuarial net losses 2.6 See (1) below 1.5 Total before tax (0.3 ) Income tax expense 1.2 Net of tax Total reclassifications $ 1.2 Net of tax (1) These items are included in the computation of net periodic pension cost. See Note 9 of the Notes to the Consolidated Financial Statements for additional information.
Changes in Accumulated Other Comprehensive Loss	Changes in accumulated other comprehensive loss for 2016, net of tax, were: (in millions) Derivative Instruments Defined Cumulative Total Balance at December 31, 2015 $ 0.0 $ (50.9 ) $ (60.0 ) $ (110.9 ) Other comprehensive income/(loss) before reclassifications 0.3 0.0 (20.5 ) (20.2 ) Amounts reclassified from AOCL 0.0 1.2 0.0 1.2 Actuarial net gains arising during the year 0.0 3.7 0.0 3.7 Net current period other comprehensive income/(loss) 0.3 4.9 (20.5 ) (15.3 ) Balance at December 31, 2016 $ 0.3 $ (46.0 ) $ (80.5 ) $ (126.2 )

Nature of Operations - Addition

Nature of Operations - Additional Information (Detail)	3 Months Ended
	Jun. 30, 2016Segment
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Number of reportable segments	4

Accounting Policies - Additiona

Accounting Policies - Additional Information (Detail)	12 Months Ended
	Dec. 31, 2016
Accounting Policies [Line Items]
Income tax, Uncertain tax position description	The tax benefits recognized in the financial statements from such positions are then measured based on the largest benefit that has a greater than 50 percent likelihood of being realized upon settlement.
Minimum [Member]
Accounting Policies [Line Items]
Short-term investments maturity period	3 months
Maximum [Member]
Accounting Policies [Line Items]
Cash equivalents maturity period	3 months
Short-term investments maturity period	12 months

Accounting Policies - Estimated

Accounting Policies - Estimated Useful Lives of Major Classes of Depreciable Assets (Detail)	12 Months Ended
	Dec. 31, 2016
Buildings [Member] | Minimum [Member]
Property, Plant and Equipment [Line Items]
Estimated useful lives of assets	7 years
Buildings [Member] | Maximum [Member]
Property, Plant and Equipment [Line Items]
Estimated useful lives of assets	25 years
Equipment [Member] | Minimum [Member]
Property, Plant and Equipment [Line Items]
Estimated useful lives of assets	3 years
Equipment [Member] | Maximum [Member]
Property, Plant and Equipment [Line Items]
Estimated useful lives of assets	10 years

Segment Reporting and Geograp54

Segment Reporting and Geographical Area Data - Additional Information (Detail)	3 Months Ended	12 Months Ended
	Jun. 30, 2016Segment	Dec. 31, 2016Customer	Dec. 31, 2015Customer	Dec. 31, 2014Customer
Segment Reporting [Abstract]
Number of reportable segments | Segment	4
Number of significant customers with sales greater than 10% | Customer		0	0	0

Segment Reporting and Geograp55

Segment Reporting and Geographical Area Data - Segment Reporting (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Segment Reporting Information [Line Items]
Net sales	$ 883.4	$ 1,012.3	$ 960.9
Gross profit	332.3	346	302
Operating income	105.4	156.3	112.5
Adjustment to fair value of contingent consideration	9.4	40.7	1.9
Identifiable assets at year end	1,181.4	1,028.6	999.9
(Loss)/profit on disposal of subsidiary	(1.4)	1.6	0
Operating Segments [Member] | Fuel Specialties [Member]
Segment Reporting Information [Line Items]
Net sales	509.6	532.8	566.8
Gross profit	186.4	176	170.8
Operating income	110.6	102.1	94.2
Identifiable assets at year end	397.2	408.9	408.2
Operating Segments [Member] | Fuel Specialties [Member] | Refinery and Performance [Member]
Segment Reporting Information [Line Items]
Net sales	388.9	408	440.2
Operating Segments [Member] | Fuel Specialties [Member] | Other [Member]
Segment Reporting Information [Line Items]
Net sales	120.7	124.8	126.6
Operating Segments [Member] | Performance Chemicals [Member]
Segment Reporting Information [Line Items]
Net sales	138.7	155	177.6
Gross profit	43.4	42.4	43.7
Operating income	16	16.3	17.8
Identifiable assets at year end	340	120.2	156.6
Operating Segments [Member] | Performance Chemicals [Member] | Personal Care [Member]
Segment Reporting Information [Line Items]
Net sales	126.8	119.6	106.1
Operating Segments [Member] | Performance Chemicals [Member] | Fragrances [Member]
Segment Reporting Information [Line Items]
Net sales	0.1	23	56.2
Operating Segments [Member] | Performance Chemicals [Member] | Other [Member]
Segment Reporting Information [Line Items]
Net sales	11.8	12.4	15.3
Operating Segments [Member] | Oilfield Services [Member]
Segment Reporting Information [Line Items]
Net sales	191.7	265	161.3
Gross profit	76.4	99.1	58.9
Operating income	(4.7)	9	18
Identifiable assets at year end	240	240.9	293.1
Operating Segments [Member] | Octane Additives [Member]
Segment Reporting Information [Line Items]
Net sales	43.4	59.5	55.2
Gross profit	26.1	28.5	28.6
Operating income	22.7	24.7	22.6
Identifiable assets at year end	38.1	28.7	29.2
Corporate, Non-Segment [Member]
Segment Reporting Information [Line Items]
Pension credit/(charge)	6.7	0.2	(3.3)
Corporate costs	(53.9)	(38.3)	(38.7)
Identifiable assets at year end	166.1	229.9	112.8
Segment Reconciling Items [Member]
Segment Reporting Information [Line Items]
(Loss)/profit on disposal of subsidiary	$ (1.4)	$ 1.6	$ 0

Segment Reporting and Geograp56

Segment Reporting and Geographical Area Data - Segment Reporting on Basis of Geographical Location (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	$ 883.4	$ 1,012.3	$ 960.9
Income before income taxes	103.1	152.3	110.9
Long-lived assets at year end	409.2	246.1	263
Goodwill	374.8	267.4	276.1
Identifiable assets at year end	1,181.4	1,028.6	999.9
United States [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	474.4	571.9	468.6
Income before income taxes	16.8	52.7	15.2
Long-lived assets at year end	155.3	185.8	197.9
Identifiable assets at year end	377.3	410.9	449.3
United Kingdom [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	428.2	445.2	486.1
Income before income taxes	42.6	60.6	57.8
Long-lived assets at year end	45.9	49.3	54.1
Identifiable assets at year end	257.6	303.4	216.4
Rest of Europe [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	118.5	133.3	146.9
Income before income taxes	39.2	42	39.3
Long-lived assets at year end	207.5	10.6	10.4
Identifiable assets at year end	156	30.9	39
Rest of World [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	31.1	22.1	21.4
Income before income taxes	4.5	(3)	(1.4)
Long-lived assets at year end	0.5	0.4	0.6
Identifiable assets at year end	15.7	16	19.1
Sales Between Areas [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	$ (168.8)	$ (160.2)	$ (162.1)

Acquisition of European Diffe57

Acquisition of European Differentiated Surfactants business - Additional Information (Detail) - USD ($)	Dec. 30, 2016	Dec. 31, 2016
Business Acquisition [Line Items]
Goodwill amortizable for tax purpose		$ 0
Huntsman [Member]
Business Acquisition [Line Items]
Business acquisition, consideration transferred	$ 199,200,000

Acquisition of European Diffe58

Acquisition of European Differentiated Surfactants business - Schedule of Total Purchase Price and Estimated Allocation of Purchase Price to Assets Acquired and Liabilities Assumed (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Business Acquisition [Line Items]
Purchase price, net of cash acquired	$ 197.4	$ 0	$ 98.7
Goodwill and Other Intangible Assets [Member]
Business Acquisition [Line Items]
Purchase price, net of cash acquired	107.4
Fixed Assets [Member]
Business Acquisition [Line Items]
Purchase price, net of cash acquired	76.5
Other Net Assets Acquired [Member]
Business Acquisition [Line Items]
Purchase price, net of cash acquired	$ 15.3

Acquisition of European Diffe59

Acquisition of European Differentiated Surfactants business - Unaudited Pro Forma Financial Information (Detail) - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Income Statement [Abstract]
Net sales	$ 1,008	$ 1,269.8
Net income	$ 88.5	$ 121.8
Earnings per share - basic	$ 3.69	$ 5.06
Earnings per share - diluted	$ 3.62	$ 4.95

Earnings Per Share - Summary of

Earnings Per Share - Summary of Earnings Per Share (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Numerator (in millions):
Net income available to common stockholders	$ 81.3	$ 119.5	$ 84.1
Denominator (in thousands):
Weighted average common shares outstanding	23,998	24,107	24,391
Dilutive effect of stock options and awards	444	505	487
Denominator for diluted earnings per share	24,442	24,612	24,878
Net income per share, basic:	$ 3.39	$ 4.96	$ 3.45
Net income per share, diluted:	$ 3.33	$ 4.86	$ 3.38

Earnings Per Share - Additional

Earnings Per Share - Additional Information (Detail) - shares	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Earnings Per Share [Abstract]
Average number of anti-dilutive options excluded from the calculation of diluted earnings per share	0	0	36,775

Property, Plant and Equipment -

Property, Plant and Equipment - Schedule of Property, Plant and Equipment (Detail) - USD ($) $ in Millions	Dec. 31, 2016	Dec. 31, 2015
Property, Plant and Equipment [Line Items]
Property, plant and equipment, Gross	$ 251.8	$ 161
Less accumulated depreciation	(94.4)	(85)
Property, plant and equipment, Net	157.4	76
Land [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, Gross	7.2	6.2
Buildings [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, Gross	37.8	21.6
Equipment [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, Gross	192.6	128
Work in Progress [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, Gross	$ 14.2	$ 5.2

Property, Plant and Equipment63

Property, Plant and Equipment - Additional Information (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Property, Plant and Equipment [Abstract]
Amounts of assets held under finance leases	$ 4.4	$ 3
Depreciation charges	13.5	13	$ 10.6
Estimated additional cost to complete work in progress	$ 9.5	$ 2.4

Goodwill - Summary of Goodwill

Goodwill - Summary of Goodwill (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Goodwill [Line Items]
At January 1, Gross cost	$ 503.9	$ 512.6
At January 1, Accumulated impairment losses	(236.5)	(236.5)
At January 1, Net book amount	267.4	276.1
Additions	107.4
Exchange effect		(0.2)
Adjustment		(0.9)
Disposals		(7.6)
At December 31, Gross cost	611.3	503.9
At December 31, Accumulated impairment losses	(236.5)	(236.5)
At December 31, Net book amount	374.8	267.4
Fuel Specialties [Member]
Goodwill [Line Items]
At January 1, Gross cost	207.9	209
At January 1, Accumulated impairment losses	0	0
At January 1, Net book amount	207.9	209
Additions	0
Exchange effect		(0.2)
Adjustment		(0.9)
Disposals		0
At December 31, Gross cost	207.9	207.9
At December 31, Accumulated impairment losses	0	0
At December 31, Net book amount	207.9	207.9
Performance Chemicals [Member]
Goodwill [Line Items]
At January 1, Gross cost	22.2	29.8
At January 1, Accumulated impairment losses	0	0
At January 1, Net book amount	22.2	29.8
Additions	107.4
Exchange effect		0
Adjustment		0
Disposals		(7.6)
At December 31, Gross cost	129.6	22.2
At December 31, Accumulated impairment losses	0	0
At December 31, Net book amount	129.6	22.2
Oilfield Services [Member]
Goodwill [Line Items]
At January 1, Gross cost	37.3	37.3
At January 1, Accumulated impairment losses	0	0
At January 1, Net book amount	37.3	37.3
Additions	0
Exchange effect		0
Adjustment		0
Disposals		0
At December 31, Gross cost	37.3	37.3
At December 31, Accumulated impairment losses	0	0
At December 31, Net book amount	37.3	37.3
Octane Additives [Member]
Goodwill [Line Items]
At January 1, Gross cost	236.5	236.5
At January 1, Accumulated impairment losses	(236.5)	(236.5)
At January 1, Net book amount	0	0
Additions	0
Exchange effect		0
Adjustment		0
Disposals		0
At December 31, Gross cost	236.5	236.5
At December 31, Accumulated impairment losses	(236.5)	(236.5)
At December 31, Net book amount	$ 0	$ 0

Goodwill - Summary of Goodwil65

Goodwill - Summary of Goodwill (Parenthetical) (Detail) - USD ($) $ in Millions	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Fuel Specialties [Member]
Goodwill [Line Items]
Historical accumulated amortization	$ 8.7	$ 0.3	$ 289.5
Performance Chemicals [Member]
Goodwill [Line Items]
Historical accumulated amortization	8.7	0.3	289.5
Octane Additives [Member]
Goodwill [Line Items]
Historical accumulated amortization	$ 8.7	$ 0.3	$ 289.5

Goodwill - Additional Informati

Goodwill - Additional Information (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Fuel Specialties [Member]
Goodwill [Line Items]
Impairment of goodwill	$ 0	$ 0	$ 0
Performance Chemicals [Member]
Goodwill [Line Items]
Impairment of goodwill	0	0	0
Oilfield Services [Member]
Goodwill [Line Items]
Impairment of goodwill	0	0	0
Octane Additives [Member]
Goodwill [Line Items]
Impairment of goodwill	$ 0	$ 0	$ 0

Other Intangible Assets - Summa

Other Intangible Assets - Summary of Other Intangible Assets (Detail) - USD ($) $ in Millions	Dec. 31, 2016	Dec. 31, 2015	Jun. 30, 2007
Finite-Lived Intangible Assets [Line Items]
Gross cost	$ 248.6	$ 248.6
Accumulated amortization	(104.2)	(79.9)
Other Intangible Assets, Net	144.4	168.7
Product Rights [Member]
Finite-Lived Intangible Assets [Line Items]
Gross cost	34	34
Accumulated amortization	(12.6)	(8.8)
Brand Names [Member]
Finite-Lived Intangible Assets [Line Items]
Gross cost	8.9	8.9
Accumulated amortization	(3.2)	(2)
Technology [Member]
Finite-Lived Intangible Assets [Line Items]
Gross cost	55.1	55.1
Accumulated amortization	(12.3)	(8.9)
Customer Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Gross cost	85.1	85.1
Accumulated amortization	(32.5)	(25.7)
Patents [Member]
Finite-Lived Intangible Assets [Line Items]
Gross cost	2.9	2.9
Accumulated amortization	(2.9)	(2.9)
Non-Compete Agreements [Member]
Finite-Lived Intangible Assets [Line Items]
Gross cost	4.1	4.1
Accumulated amortization	(3.4)	(2.5)
Marketing Related [Member]
Finite-Lived Intangible Assets [Line Items]
Gross cost	22.1	22.1	$ 28.4
Accumulated amortization	(21.2)	(20.3)
Internally Developed Software [Member]
Finite-Lived Intangible Assets [Line Items]
Gross cost	36.4	36.4
Accumulated amortization	$ (16.1)	$ (8.8)

Other Intangible Assets - Addit

Other Intangible Assets - Additional Information (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2008	Oct. 27, 2014	Nov. 04, 2013	Aug. 30, 2013	Jun. 30, 2007
Finite-Lived Intangible Assets [Line Items]
Amortization expense	$ 24,200,000	$ 21,000,000	$ 17,800,000
Intangible asset	248,600,000	248,600,000
Cost of goods, amortization	4,300,000	4,400,000	$ 3,700,000
Product Rights [Member]
Finite-Lived Intangible Assets [Line Items]
Intangible asset	34,000,000	34,000,000
Brand Names [Member]
Finite-Lived Intangible Assets [Line Items]
Amortization expense	1,200,000	1,200,000
Intangible asset	8,900,000	8,900,000
Technology [Member]
Finite-Lived Intangible Assets [Line Items]
Amortization expense	3,400,000	3,400,000
Intangible asset	55,100,000	55,100,000
Customer Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Amortization expense	6,800,000	6,700,000
Intangible asset	$ 85,100,000	85,100,000
Non-Compete Agreements [Member]
Finite-Lived Intangible Assets [Line Items]
Assets being amortized duration	2 years
Intangible assets, recognized	$ 1,500,000
Intangible asset	4,100,000	4,100,000
Non-Compete Agreements [Member] | Selling, General and Administrative Expenses [Member]
Finite-Lived Intangible Assets [Line Items]
Amortization expense	900,000	900,000
Marketing Related [Member]
Finite-Lived Intangible Assets [Line Items]
Amortization expense	900,000	1,000,000
Intangible asset	$ 22,100,000	22,100,000						$ 28,400,000
Contract provisions offset against intangible assets				$ 6,300,000
Internally Developed Software [Member]
Finite-Lived Intangible Assets [Line Items]
Assets being amortized duration	5 years
Residual value	$ 0
Intangible asset	36,400,000	36,400,000
Internally Developed Software [Member] | Selling, General and Administrative Expenses [Member]
Finite-Lived Intangible Assets [Line Items]
Amortization expense	$ 7,300,000	4,000,000
Chemsil [Member] | Product Rights [Member]
Finite-Lived Intangible Assets [Line Items]
Allocation of purchase price to other intangible assets							$ 34,000,000
Assets being amortized duration	9 years
Amortization expense	$ 3,800,000	$ 3,800,000
Date of acquisition	Aug. 30, 2013
Residual value	$ 0
Independence Acquisition [Member] | Brand Names [Member]
Finite-Lived Intangible Assets [Line Items]
Allocation of purchase price to other intangible assets					$ 6,000,000
Assets being amortized duration	10 years
Date of acquisition	Oct. 27, 2014
Residual value	$ 0
Independence Acquisition [Member] | Technology [Member]
Finite-Lived Intangible Assets [Line Items]
Allocation of purchase price to other intangible assets					26,000,000
Assets being amortized duration	15 years
Date of acquisition	Oct. 27, 2014
Residual value	$ 0
Independence Acquisition [Member] | Customer Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Allocation of purchase price to other intangible assets					29,200,000
Assets being amortized duration	10 years
Date of acquisition	Oct. 27, 2014
Residual value	$ 0
Independence Acquisition [Member] | Non-Compete Agreements [Member]
Finite-Lived Intangible Assets [Line Items]
Allocation of purchase price to other intangible assets					$ 2,600,000
Assets being amortized duration	3 years
Date of acquisition	Oct. 27, 2014
Residual value	$ 0
Bachman [Member] | Brand Names [Member]
Finite-Lived Intangible Assets [Line Items]
Allocation of purchase price to other intangible assets						$ 2,900,000
Assets being amortized duration	5 years
Date of acquisition	Nov. 4, 2013
Residual value	$ 0
Bachman [Member] | Technology [Member]
Finite-Lived Intangible Assets [Line Items]
Allocation of purchase price to other intangible assets						8,500,000
Assets being amortized duration	15 years
Date of acquisition	Nov. 4, 2013
Residual value	$ 0
Bachman [Member] | Customer Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Allocation of purchase price to other intangible assets						$ 14,500,000
Assets being amortized duration	14 years 6 months
Date of acquisition	Nov. 4, 2013
Residual value	$ 0
Strata [Member] | Technology [Member]
Finite-Lived Intangible Assets [Line Items]
Assets being amortized duration	16 years 6 months
Date of acquisition	Dec. 24, 2012
Residual value	$ 0
Intangible assets, recognized	$ 18,300,000
Strata [Member] | Customer Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Assets being amortized duration	11 years 6 months
Date of acquisition	Dec. 24, 2012
Residual value	$ 0
Intangible assets, recognized	$ 28,200,000
Finetex [Member] | Customer Lists [Member]
Finite-Lived Intangible Assets [Line Items]
Assets being amortized duration	13 years
Residual value	$ 0
Intangible assets, recognized	$ 4,200,000

Other Intangible Assets - Sched

Other Intangible Assets - Schedule of Future Amortization Estimated Expense (Detail) $ in Millions	Dec. 31, 2016USD ($)
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract]
2,017	$ 24.1
2,018	21.1
2,019	17.7
2,020	17.4
2,021	$ 14.2

Pension Plans - Additional Info

Pension Plans - Additional Information (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Defined Benefit Plan Disclosure [Line Items]
Retirement age of service	65 years
Annual cash contribution	$ 1.1
Percentage change in discount rate	0.25%
Amount change in PBO due to discount rate	$ 26
Amount change in net pension credit due to discount rate	0.2
Amount change in PBO due to change price inflation	$ 19
Percentage change in price inflation	0.25%
Amount change in net pension credit due price inflation	$ 0.2
Maximum percentage of Plan's assets invested in individual company's investment funds	5.00%
Accumulated benefit obligation for the Plan	$ 710.2	$ 739.7
Amount of contributions to defined contribution schemes	7.9	$ 8.5
Huntsman [Member]
Defined Benefit Plan Disclosure [Line Items]
Pension plans liability	$ 4.1
United Kingdom Government Gilts [Member]
Defined Benefit Plan Disclosure [Line Items]
Percentage of asset allocation, actual	18.00%	16.00%
Debt Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Asset allocation	65.00%
Equity Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Asset allocation	35.00%
German Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Amount of unrecognized actuarial net losses, net of tax	$ 2.5
Amount tax on unrecognized actuarial net losses	$ 0.7
United Kingdom Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Asset allocation	100.00%	100.00%	100.00%
United Kingdom Plan [Member] | Index-Tracking Funds [Member]
Defined Benefit Plan Disclosure [Line Items]
Percentage of asset allocation, actual	37.00%	35.00%
United Kingdom Plan [Member] | Debt Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Asset allocation	66.00%	62.00%	63.00%
United Kingdom Plan [Member] | Equity Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Asset allocation	25.00%	34.00%	32.00%

Pension Plans - Defined Benefit

Pension Plans - Defined Benefit Pension Plan (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Equity Securities [Member]
Plan asset allocation by category (%):
Total plan asset allocation by category	35.00%
Debt Securities [Member]
Plan asset allocation by category (%):
Total plan asset allocation by category	65.00%
United Kingdom Plan [Member]
Plan assumptions at December 31, (%):
Discount rate	2.48%	3.69%	3.55%
Inflation rate	2.25%	2.15%	2.15%
Rate of return on plan assets	3.20%	4.20%	4.05%
Plan asset allocation by category (%):
Total plan asset allocation by category	100.00%	100.00%	100.00%
United Kingdom Plan [Member] | Equity Securities [Member]
Plan assumptions at December 31, (%):
Rate of return on plan assets	5.80%	6.65%	6.50%
Plan asset allocation by category (%):
Total plan asset allocation by category	25.00%	34.00%	32.00%
United Kingdom Plan [Member] | Debt Securities [Member]
Plan assumptions at December 31, (%):
Rate of return on plan assets	2.05%	2.85%	2.75%
Plan asset allocation by category (%):
Total plan asset allocation by category	66.00%	62.00%	63.00%
United Kingdom Plan [Member] | Cash [Member]
Plan asset allocation by category (%):
Total plan asset allocation by category	9.00%	4.00%	5.00%
United Kingdom [Member] | Foreign Pension Plan [Member]
Plan net pension (credit)/charge:
Service cost	$ 1	$ 1.5	$ 1.7
Interest cost on PBO	20.7	27.7	34.7
Expected return on plan assets	(29.9)	(33.4)	(37.2)
Amortization of prior service credit	(1.1)	(1.2)	(1.3)
Amortization of actuarial net losses	2.6	5.2	5.4
Net pension charge	$ (6.7)	$ (0.2)	$ 3.3

Pension Plans - Movements in PB

Pension Plans - Movements in PBO and Fair Value of Plan Assets (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Change in PBO:
Actuarial losses/(gains)	$ 3.7	$ 3.2	$ 54.7
United Kingdom Plan [Member]
Change in PBO:
Benefits paid	(39.7)	(42.9)
Fair value of plan assets:
Opening balance	795.2	862.3
Benefits paid	(39.7)	(42.9)
Actual contributions by employer	1.1	9
Actual return on assets	142.2	11.5
Exchange effect	(140.6)	(44.7)
Closing balance	758.2	795.2	862.3
German Plan [Member]
Change in PBO:
Opening balance	9.2	10.4
Interest cost	0.2	0.2	0.3
Service cost	0.2	0.2	0.2
Benefits paid	(0.2)	(0.2)
Actuarial losses/(gains)	1	(0.3)
Exchange effect	(0.3)	(1.1)
Closing balance	10.1	9.2	10.4
Fair value of plan assets:
Benefits paid	(0.2)	(0.2)
Pension Benefit Obligation [Member] | United Kingdom Plan [Member]
Change in PBO:
Opening balance	739.7	817.1
Interest cost	20.7	27.7
Service cost	1	1.5
Benefits paid	(39.7)	(42.9)
Actuarial losses/(gains)	119.8	(21.8)
Exchange effect	(131.3)	(41.9)
Closing balance	710.2	739.7	$ 817.1
Fair value of plan assets:
Benefits paid	$ (39.7)	$ (42.9)

Pension Plans - Fair Value of P

Pension Plans - Fair Value of Pension Assets (Detail) - United Kingdom Plan [Member] - USD ($) $ in Millions	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Fair value of pension assets
Total assets at fair value	$ 692.4	$ 763.2
Cash	65.8	32
Total plan assets	758.2	795.2	$ 862.3
Derivatives (Level 1 Measurement) [Member]
Fair value of pension assets
Total assets at fair value	461.6	512.1
Cash	65.8	32
Total plan assets	527.4	544.1
Significant Other Observable Inputs (Level 2) [Member]
Fair value of pension assets
Total assets at fair value	26.2	31.6
Total plan assets	26.2	31.6
Non-financial Assets and Liabilities (Level 3 Measurement) [Member]
Fair value of pension assets
Total assets at fair value	152.9	171.9
Total plan assets	152.9	171.9
Debt Securities Issued by U.S. Government and Government Agencies [Member]
Fair value of pension assets
Total assets at fair value	0.2	0.4
Debt Securities Issued by U.S. Government and Government Agencies [Member] | Derivatives (Level 1 Measurement) [Member]
Fair value of pension assets
Total assets at fair value	0.2	0.4
Debt Securities Issued by Non-U.S. Government and Government Agencies [Member]
Fair value of pension assets
Total assets at fair value	139.3	132.1
Debt Securities Issued by Non-U.S. Government and Government Agencies [Member] | Derivatives (Level 1 Measurement) [Member]
Fair value of pension assets
Total assets at fair value	139.3	132.1
Corporate Debt Securities [Member]
Fair value of pension assets
Total assets at fair value	180.8	189.7
Corporate Debt Securities [Member] | Derivatives (Level 1 Measurement) [Member]
Fair value of pension assets
Total assets at fair value	180.8	189.7
Other Asset-Backed Securities [Member]
Fair value of pension assets
Total assets at fair value		0.2
Other Asset-Backed Securities [Member] | Derivatives (Level 1 Measurement) [Member]
Fair value of pension assets
Total assets at fair value		0.2
Equity Securities Held for Proprietary Investment Purposes [Member]
Fair value of pension assets
Total assets at fair value	84.2	125
Equity Securities Held for Proprietary Investment Purposes [Member] | Derivatives (Level 1 Measurement) [Member]
Fair value of pension assets
Total assets at fair value	84.2	125
Real Estate [Member]
Fair value of pension assets
Total assets at fair value	57.1	64.7
Real Estate [Member] | Derivatives (Level 1 Measurement) [Member]
Fair value of pension assets
Total assets at fair value	57.1	64.7
Insurance Contracts [Member]
Fair value of pension assets
Total assets at fair value	152.9	171.9
Insurance Contracts [Member] | Non-financial Assets and Liabilities (Level 3 Measurement) [Member]
Fair value of pension assets
Total assets at fair value	152.9	171.9
Investments Measured At Net Asset Value [Member]
Fair value of pension assets
Total assets at fair value	51.7	47.6
Other Assets [Member]
Fair value of pension assets
Total assets at fair value	26.2	31.6
Other Assets [Member] | Significant Other Observable Inputs (Level 2) [Member]
Fair value of pension assets
Total assets at fair value	$ 26.2	$ 31.6

Pension Plans - Reconciliation

Pension Plans - Reconciliation of Fair Value of Plan Assets Measured Using Significant Unobservable Inputs (Detail) - United Kingdom Plan [Member] - Non-financial Assets and Liabilities (Level 3 Measurement) [Member] - Other Assets [Member] - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Beginning balance	$ 171.9	$ 0
Realized/unrealized gains/(losses):
Relating to assets still held at the reporting date	16.8	0
Relating to assets sold during the period	0	0
Purchases, issuances and settlements	(6.7)	171.9
Exchange effect	(29.1)	0
Ending balance	$ 152.9	$ 171.9

Pension Plans - Plan Net Pensio

Pension Plans - Plan Net Pension Credit (Detail) - United Kingdom Plan [Member] - Forecast [Member] $ in Millions	12 Months Ended
	Dec. 31, 2017USD ($)
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 0.9
Interest cost on PBO	14.6
Expected return on plan assets	(23.4)
Amortization of prior service credit	(1)
Amortization of actuarial net losses	4.8
Net pension credit total	$ (4.1)

Pension Plans - Expected Benefi

Pension Plans - Expected Benefit Payments (Detail) $ in Millions	Dec. 31, 2016USD ($)
Defined Benefit Plan, Expected Future Benefit Payments, Fiscal Year Maturity [Abstract]
2,017	$ 34.9
2,018	35.4
2,019	35.9
2,020	36.4
2,021	36.9
2022-2026	$ 192.1

Pension Plans - Unfunded Define

Pension Plans - Unfunded Defined Benefit Pension Plan (Detail) - German Plan [Member] - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Plan net pension charge:
Service cost	$ 0.2	$ 0.2	$ 0.2
Interest cost on PBO	0.2	0.2	0.3
Amortization of actuarial net loss	0.2	0.3	0.1
Net pension charge	$ 0.6	$ 0.7	$ 0.6
Plan assumptions at December 31, (%):
Discount rate	1.80%	2.40%	2.10%
Inflation rate	1.75%	1.75%	1.75%
Rate of increase in compensation levels	2.75%	2.75%	2.75%

Income Taxes - Roll-Forward of

Income Taxes - Roll-Forward of Unrecognized Tax Benefits and Associated Accrued Interest and Penalties (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Income Tax Contingency [Line Items]
Opening balance at January 1	$ 3.9	$ 6.2	$ 13
Reductions for tax positions of prior periods	(0.7)	0	(4)
Additions for tax positions of prior periods	0	0.4	0.1
Additions for current year tax positions	0	1.2	0.2
Reductions due to lapsed statutes of limitations	(0.9)	(3.9)	(3.1)
Closing balance at December 31	2.3	3.9	6.2
Current				$ 0	$ 0	$ 0
Non-current				2.3	3.9	6.2
Unrecognized tax benefits	3.9	6.2	13	2.3	3.9	6.2
Unrecognized Tax Benefits [Member]
Income Tax Contingency [Line Items]
Opening balance at January 1	3.6	5.7	11.9
Reductions for tax positions of prior periods	(0.6)	0	(3.6)
Additions for tax positions of prior periods	0	0.3	0.1
Additions for current year tax positions	0	1.2	0.2
Reductions due to lapsed statutes of limitations	(0.8)	(3.6)	(2.9)
Closing balance at December 31	2.2	3.6	5.7
Current				0	0	0
Non-current				2.2	3.6	5.7
Unrecognized tax benefits	3.6	5.7	11.9	2.2	3.6	5.7
Interest and Penalties [Member]
Income Tax Contingency [Line Items]
Opening balance at January 1	0.3	0.5	1.1
Reductions for tax positions of prior periods	(0.1)	0	(0.4)
Additions for tax positions of prior periods	0	0.1	0
Additions for current year tax positions	0	0	0
Reductions due to lapsed statutes of limitations	(0.1)	(0.3)	(0.2)
Closing balance at December 31	0.1	0.3	0.5
Current				0	0	0
Non-current				0.1	0.3	0.5
Unrecognized tax benefits	$ 0.3	$ 0.5	$ 1.1	$ 0.1	$ 0.3	$ 0.5

Income Taxes - Additional Infor

Income Taxes - Additional Information (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Income Tax Contingency [Line Items]
Unrecognized tax benefits, interest and penalties	$ 2.3
Reduction in unrecognized tax benefits	$ 1.6
Income tax examination, description	The Company and its U.S. subsidiaries remain open to examination by the IRS for years 2013 onwards. The Company's subsidiaries in foreign tax jurisdictions are open to examination including France (2013 onwards), Germany (2015 onwards), Switzerland (2015 onwards) and the United Kingdom (2015 onwards).
Cash payments for income taxes	$ 23.1	$ 22.5	$ 11.6
Gross net operating loss carry forwards deferred tax asset	18.2	2.7
Deferred tax assets valuation allowance	0	$ 0
Operating loss carry forwards	75.3
Unremitted earnings	788
United States [Member]
Income Tax Contingency [Line Items]
Operating loss carry forwards	17.2
Federal [Member]
Income Tax Contingency [Line Items]
Operating loss carry forwards	10.2
State [Member]
Income Tax Contingency [Line Items]
Operating loss carry forwards	7
Foreign [Member]
Income Tax Contingency [Line Items]
Operating loss carry forwards	$ 58.1
France [Member]
Income Tax Contingency [Line Items]
Open tax year	2,013
Germany [Member]
Income Tax Contingency [Line Items]
Open tax year	2,015
Switzerland [Member]
Income Tax Contingency [Line Items]
Open tax year	2,015
United Kingdom [Member]
Income Tax Contingency [Line Items]
Open tax year	2,015

Income Taxes - Sources of Incom

Income Taxes - Sources of Income before Income Taxes (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Income Tax Disclosure [Abstract]
Domestic	$ 16.8	$ 52.7	$ 15.2
Foreign	86.3	99.6	95.7
Income before income taxes	$ 103.1	$ 152.3	$ 110.9

Income Taxes - Components of In

Income Taxes - Components of Income Tax Expense (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Current:
Federal	$ 4.4	$ 5.2	$ 4.5
State and local	1.1	1.3	2.1
Foreign	15.3	14.3	14.9
Total Current Income Tax	20.8	20.8	21.5
Deferred:
Federal	(0.7)	12.8	3.3
State and local	(0.3)	0.5	0.3
Foreign	2	(1.3)	1.7
Total Deferred Income Tax	1	12	5.3
Total	$ 21.8	$ 32.8	$ 26.8

Income Taxes - Factors Effectin

Income Taxes - Factors Effecting Effective Tax Rate from U.S. Federal Statutory Rate (Detail)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Income Tax Disclosure [Abstract]
Statutory rate	35.00%	35.00%	35.00%
Foreign income inclusions	1.00%	1.80%	5.50%
Foreign tax rate differential	(16.60%)	(9.60%)	(14.60%)
Tax (credit)/charge from previous years	(0.70%)	(0.50%)	4.70%
Net (credit) from unrecognized tax benefits	(1.60%)	(1.50%)	(6.20%)
Foreign currency transactions	2.40%	(1.90%)	1.00%
United Kingdom income tax rate reduction	(0.60%)	(0.70%)	(0.00%)
Other items and adjustments, net	2.20%	(1.10%)	(1.20%)
Effective Income Tax Rate	21.10%	21.50%	24.20%

Income Taxes - Details of Defer

Income Taxes - Details of Deferred Tax Assets and Liabilities (Detail) - USD ($) $ in Millions	Dec. 31, 2016	Dec. 31, 2015
Deferred tax assets:
Stock options	$ 5.5	$ 5.2
Net operating loss carry forwards	18.2	2.7
Intangible assets	3.7	3.3
Accretion expense	5.1	4.8
Other	9.5	6
Subtotal	42	22
Less valuation allowance	0	0
Total net deferred tax assets	42	22
Deferred tax liabilities:
Excess of book over tax basis in property, plant and equipment	(13)	(4.1)
Goodwill amortization	(11.3)	(11.3)
Intangible amortization	(26.7)	(23.4)
Pension liabilities	(8.2)	(10)
Other	(0.2)	(0.7)
Total deferred tax liabilities	(59.4)	(49.5)
Net deferred tax liability	(17.4)	(27.5)
Current portion of deferred tax assets	0	8.8
Deferred tax assets, net of current portion	14.9	1.4
Current portion of deferred tax liabilities	0	0
Deferred tax liabilities, net of current portion	(32.3)	(37.7)
Net deferred tax (liability)/asset	$ (17.4)	$ (27.5)

Long-Term Debt - Schedule of Lo

Long-Term Debt - Schedule of Long-Term Debt (Detail) - USD ($) $ in Millions	Dec. 31, 2016	Dec. 31, 2015
Debt Instrument [Line Items]
Deferred finance costs	$ (2.2)	$ (1.4)
Long-term debt	268.8	131.6
Less current portion	(10.3)	0
Long-term debt, net of current portion	258.5	131.6
Long-term debt	268.8	131.6
Term Loan [Member]
Debt Instrument [Line Items]
Long-term debt	110	0
Long-term debt	110	0
Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Long-term debt	161	133
Long-term debt	$ 161	$ 133

Long-Term Debt - Additional Inf

Long-Term Debt - Additional Information (Detail)	12 Months Ended
	Dec. 31, 2016USD ($)	Dec. 31, 2015USD ($)	Dec. 31, 2014USD ($)	Dec. 28, 2016USD ($)	Dec. 14, 2016USD ($)
Debt Instrument [Line Items]
Long-term debt	$ 268,800,000	$ 131,600,000
Finance cost capitalized	2,700,000	1,500,000	$ 2,600,000
Amortization of deferred finance costs	$ 400,000	$ 1,200,000	700,000
Maximum ratio of net debt to EBITDA	3
Minimum ratio of EBITDA to net interest	4
Weighted average rate of interest on borrowings	1.72%	1.67%
Payments of interest on long-term debt	$ 2,600,000	$ 2,300,000	2,300,000
Net cash outflows in respect of refinancing costs	1,200,000	1,500,000	$ 100,000
Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Long-term debt	161,000,000	133,000,000
Finance cost capitalized	$ 1,200,000	1,500,000
Revolving Credit Facility [Member] | Third Amendment and Restatement Agreement [Member]
Debt Instrument [Line Items]
Revolving Credit Facility					$ 200,000,000
Revolving Credit Facility [Member] | Third Amended and Restated Credit Agreement [Member]
Debt Instrument [Line Items]
Termination date of the revolving facility	Revolving facility remains November 6, 2020. The term loan has an $11,000,000 repayment installment due December 28, 2017, a $16,500,000 installment due December 28, 2018 and a $22,000,000 installment due December 28, 2019, with the outstanding balance due on November 6, 2020.
Installment due December 28, 2017				$ 11,000,000
Installment due December 28, 2018				16,500,000
Installment due December 28, 2019				$ 22,000,000
Term Loan [Member]
Debt Instrument [Line Items]
Long-term debt	$ 110,000,000	$ 0
Term Loan [Member] | Revolving Credit Facility [Member] | Third Amended and Restated Credit Agreement [Member]
Debt Instrument [Line Items]
Long-term debt					$ 110,000,000

Long-Term Debt - Summary of Deb

Long-Term Debt - Summary of Debt Refinancing Costs (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]
Gross cost,Beginning balance	$ 1.5	$ 2.6
Capitalized in the year	1.2	1.5	$ 0.1
Written down in the year	0	(2.6)
Gross cost,Ending Balance	2.7	1.5	2.6
Accumulated amortization,Beginning Balance	(0.1)	(1.5)
Amortization in the year	(0.4)	(1.2)
Amortization written down in the year	0	2.6
Accumulated amortization,Ending balance	(0.5)	(0.1)	$ (1.5)
Deferred finance costs	$ 2.2	$ 1.4

Plant Closure Provisions - Move

Plant Closure Provisions - Movements in Plant Closure and Restructuring Provisions (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Restructuring and Related Activities [Abstract]
Beginning Balance	$ 37.7	$ 34.1	$ 32.4
Charge for the period	4.7	6.8	5
Utilized in the period	(2.7)	(2.6)	(2)
Released in the period	0	0	(1)
Disposal in the period	0	(0.3)	0
Exchange effect	(0.2)	(0.3)	(0.3)
Ending Balance	39.5	37.7	34.1
Due within one year	(6.7)	(6.4)	(5.7)
Due after one year	$ 32.8	$ 31.3	$ 28.4

Plant Closure Provisions - Addi

Plant Closure Provisions - Additional Information (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Restructuring Cost and Reserve [Line Items]
Expenditure	$ 2.7	$ 2.6	$ 2
Remediation [Member]
Restructuring Cost and Reserve [Line Items]
Accretion expense recognized	3.4
Remediation charge for changes in the scope and cost of future remediation activities	$ 1.3
Discount rate of remediation provision	8.92%
Expenditure	$ 2.7	$ 2.6	$ 2

Fair Value Measurements - Carry

Fair Value Measurements - Carrying Amount and Fair Values of the Company's Assets and Liabilities Measured on a Recurring Basis (Detail) - Recurring [Member] - USD ($) $ in Millions	Dec. 31, 2016	Dec. 31, 2015
Carrying Amount [Member]
Non-derivatives:
Cash and cash equivalents	$ 101.9	$ 136.9
Short-term investments	0	4.8
Non-derivatives:
Long-term debt (including current portion)	268.8	131.6
Finance leases (including current portion)	4.5	3.1
Carrying Amount [Member] | Derivatives (Level 1 Measurement) [Member] | Interest Rate Swaps [Member]
Derivatives (Level 1 measurement):
Interest rate swaps	0.4	0
Carrying Amount [Member] | Derivatives (Level 1 Measurement) [Member] | Foreign Currency Forward Exchange Contracts [Member]
Derivatives (Level 1 measurement):
Foreign currency forward exchange contracts	0.6	0.3
Carrying Amount [Member] | Non-financial Assets and Liabilities (Level 3 Measurement) [Member]
Non-financial liabilities (Level 3 measurement):
Stock equivalent units	9.8	7.8
Acquisition-related contingent consideration	1.1	54.6
Fair Value [Member]
Non-derivatives:
Cash and cash equivalents	101.9	136.9
Short-term investments	0	4.8
Non-derivatives:
Long-term debt (including current portion)	268.8	131.6
Finance leases (including current portion)	4.5	3.1
Fair Value [Member] | Derivatives (Level 1 Measurement) [Member] | Interest Rate Swaps [Member]
Derivatives (Level 1 measurement):
Interest rate swaps	0.4	0
Fair Value [Member] | Derivatives (Level 1 Measurement) [Member] | Foreign Currency Forward Exchange Contracts [Member]
Derivatives (Level 1 measurement):
Foreign currency forward exchange contracts	0.6	0.3
Fair Value [Member] | Non-financial Assets and Liabilities (Level 3 Measurement) [Member]
Non-financial liabilities (Level 3 measurement):
Stock equivalent units	9.8	7.8
Acquisition-related contingent consideration	$ 1.1	$ 54.6

Derivative Instruments and Ri90

Derivative Instruments and Risk Management - Additional Information (Detail)	12 Months Ended
	Dec. 31, 2016USD ($)
Derivative [Line Items]
Interest rate swaps notional value	$ 160,000,000
Gains recognized in other comprehensive loss	$ 400,000
Maximum [Member]
Derivative [Line Items]
Maturity period of foreign currency forward exchange contracts	1 year
Interest Rate Swaps [Member] | Maximum [Member]
Derivative [Line Items]
Derivative fixed interest rate	1.67%
Interest Rate Swaps [Member] | Minimum [Member]
Derivative [Line Items]
Derivative fixed interest rate	1.41%
Not Designated as Hedging Instrument [Member] | Foreign Currency Forward Exchange Contracts [Member] | Other net income/(expense) [Member]
Derivative [Line Items]
Amount of gain/(loss) recognized in income	$ 4,400,000

Commitments and Contingencies -

Commitments and Contingencies - Additional Information (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Commitments and Contingencies Disclosure [Abstract]
Operating leases, rent expense	$ 5.2	$ 4.5	$ 3.7
Guarantees	$ 4.7

Commitments and Contingencies92

Commitments and Contingencies - Future Commitments under Non-Cancelable Operating Leases (Detail) $ in Millions	Dec. 31, 2016USD ($)
Operating Leases, Future Minimum Payments Due, Fiscal Year Maturity [Abstract]
2,017	$ 4.5
2,018	3.6
2,019	2.2
2,020	1.5
2,021	1
Thereafter	4.5
Total Commitments	$ 17.3

Stockholders' Equity - Stockhol

Stockholders' Equity - Stockholders' Equity (Detail) - shares	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Equity [Abstract]
Common Stock, Beginning balance	29,554,500	29,554,500	29,554,500
Treasury Stock, Beginning balance	5,453,078	5,263,000	5,208,000
Exercise of options, Common Stock	0	0	0
Exercise of options, Treasury Stock	(152,000)	(152,000)	(105,000)
Stock purchases, Common Stock	0	0	0
Stock purchases, Treasury Stock	182,000	342,000	160,000
Common Stock, Ending balance	29,554,500	29,554,500	29,554,500
Ending balance, Treasury Stock	5,483,341	5,453,078	5,263,000

Stockholders' Equity - Addition

Stockholders' Equity - Additional Information (Detail) - shares	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Equity [Abstract]
Common stock, shares authorized	40,000,000	40,000,000
Number of shares issued	29,554,500	29,554,500	29,554,500	29,554,500
Treasury stock, shares	5,483,341	5,453,078	5,263,000	5,208,000

Stock-Based Compensation Plan95

Stock-Based Compensation Plans - Additional Information (Detail)	12 Months Ended
	Dec. 31, 2016USD ($)DirectorsExecutivesStock_Planshares	Dec. 31, 2015USD ($)	Dec. 31, 2014USD ($)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock option compensation	$ 3,300,000	$ 3,700,000	$ 2,600,000
Accrued liabilities	94,300,000	84,100,000
Maximum cash bonus under long-term incentive plan	3,000,000
Cash-settled long-term incentives	$ 3,000,000
Stock Options Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of active stock option plans | Stock_Plan	5
Number of active stock option plans for employees | Stock_Plan	2
Number of active stock option plans for non-employee directors | Directors	1
Number of active stock option plans for key executives | Executives	1
Expiration term for stock granted	10 years
Aggregate number of shares of common stock reserved for issuance which can be granted | shares	2,640,000
Number exercisable and fully vested | shares	68,796
Fully vested stock options with performance conditions attached | shares	20,417
Stock option compensation	$ 3,300,000	3,700,000	2,600,000
Total intrinsic value exercised	2,800,000	2,400,000	900,000
Total compensation cost related to non-vested stock options not yet recognized	$ 3,600,000
Expected compensation cost recognized over the weighted-average period	1 year 11 months 1 day
Cash tax benefit realized from stock option exercises	$ 900,000	1,300,000	900,000
Excess tax benefit	$ 1,000,000	500,000	400,000
Stock Options Plan [Member] | Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Range of stock vesting period	24 months
Stock Options Plan [Member] | Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Range of stock vesting period	6 years
Stock Equivalent Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expiration term for stock granted	10 years
Fully vested stock options with performance conditions attached | shares	46,260
Total intrinsic value exercised	$ 1,800,000	2,400,000	3,700,000
Expected compensation cost recognized over the weighted-average period	1 year 4 months 24 days
Accrued liabilities	$ 9,800,000
Number of exercisable SEUs | shares	48,964
Compensation cost	$ 4,700,000	$ 4,900,000	$ 2,000,000
Stock Equivalent Units [Member] | Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Range of stock vesting period	11 months
Stock Equivalent Units [Member] | Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Range of stock vesting period	4 years

Stock-Based Compensation Plan96

Stock-Based Compensation Plans - Assumptions Used to Determine Grant-Date Fair Value of Options (Detail) - Black-Scholes Model [Member]	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Dividend yield	1.38%	1.03%	1.34%
Expected life	5 years	5 years	5 years
Volatility	25.11%	25.50%	30.70%
Risk free interest rate	0.91%	1.05%	0.97%

Stock-Based Compensation Plan97

Stock-Based Compensation Plans - Summary of Transactions of the Company's Stock Option Plans (Detail) - Stock Options Plan [Member]	12 Months Ended
	Dec. 31, 2016$ / sharesshares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Outstanding, Number of Options, Beginning balance | shares	667,439
Exercised, Number of Options | shares	(151,164)
Forfeited, Number of Options | shares	(37,621)
Outstanding, Number of Options, Ending balance | shares	570,994
Outstanding, Weighted Average Exercise Price, Beginning balance	$ 19.87
Exercised, Weighted Average Exercise Price	14.38
Forfeited, Weighted Average Exercise Price	14.49
Outstanding, Weighted Average Exercise Price, Ending balance	20.38
Outstanding, Weighted Average Grant-Date Fair Value	20.19
Exercised	19.63
Forfeited, Weighted Average Grant-Date Fair Value	24.83
Outstanding, Weighted Average Grant-Date Fair Value	$ 21.68
Discount [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted, Number of Options | shares	67,546
Granted, Weighted Average Exercise Price	$ 0
Granted, Weighted Average Grant-Date Fair Value	$ 38.13
Market Value [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted, Number of Options | shares	24,794
Granted, Weighted Average Exercise Price	$ 44.34
Granted, Weighted Average Grant-Date Fair Value	$ 9.17

Stock-Based Compensation Plan98

Stock-Based Compensation Plans - Assumptions Used to Determine Fair Value of SEUs (Detail) - Stock Equivalent Units [Member]	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Dividend yield	0.98%	1.12%	1.29%
Volatility	25.20%	24.60%	26.00%
Risk free interest rate	1.47%	1.31%	1.10%

Stock-Based Compensation Plan99

Stock-Based Compensation Plans - Summarizes Transactions of SEUs (Detail) - Stock Equivalent Units [Member]	12 Months Ended
	Dec. 31, 2016$ / sharesshares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Outstanding, Number of SEUs, Beginning balance | shares	279,750
Granted at discount, Number of SEUs | shares	70,153
Granted at market value, Number of SEUs | shares	7,316
Exercised, Number of SEUs | shares	(66,424)
Forfeited, Number of SEUs | shares	(10,980)
Outstanding, Number of SEUs, Ending balance | shares	279,815
Outstanding, Weighted Average Exercise Price, Beginning balance	$ 3.79
Granted at discount, Weighted Average Exercise Price	0
Granted at market value, Weighted Average Exercise Price	44.18
Exercised, Weighted Average Exercise Price	4.32
Forfeited, Weighted Average Exercise Price	3.61
Outstanding, Weighted Average Exercise Price, Ending balance	3.77
Outstanding, Weighted Average Grant-Date Fair Value	31.72
Granted at discount, Weighted Average Grant-Date Fair Value	36.05
Granted at market value, Weighted Average Grant-Date Fair Value	9.11
Exercised, Weighted Average Grant-Date Fair Value	27.28
Forfeited, Weighted Average Grant-Date Fair Value	31.66
Outstanding, Weighted Average Grant-Date Fair Value	$ 33.40

Reclassifications out of Acc100

Reclassifications out of Accumulated Other Comprehensive Loss - Summary of Reclassifications out of Accumulated Other Comprehensive Loss (Detail) $ in Millions	12 Months Ended
	Dec. 31, 2016USD ($)
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Total reclassifications	$ (1.2)
Defined Benefit Pension Plan Items [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Total reclassifications	(1.2)
Reclassification Out of Accumulated Other Comprehensive Income/(Loss) [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Total reclassifications	1.2
Reclassification Out of Accumulated Other Comprehensive Income/(Loss) [Member] | Defined Benefit Pension Plan Items [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Amortization of prior service credit	(1.1)
Amortization of actuarial net losses	2.6
Total before tax	1.5
Income tax expense	(0.3)
Total reclassifications	$ 1.2

Reclassifications out of Acc101

Reclassifications out of Accumulated Other Comprehensive Loss - Changes in Accumulated Other Comprehensive Loss (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Accumulated Other Comprehensive Income (Loss) [Line Items]
Opening balance	$ (110.9)	$ (106.3)
Other comprehensive income/(loss) before reclassifications	(20.2)
Amounts reclassified from AOCL	1.2
Actuarial net gains arising during the year	3.7	3.2	$ 54.7
Net current period other comprehensive income/(loss)	(15.3)
Closing balance	(126.2)	(110.9)	$ (106.3)
Derivative Instruments [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Opening balance	0
Other comprehensive income/(loss) before reclassifications	0.3
Amounts reclassified from AOCL	0
Actuarial net gains arising during the year	0
Net current period other comprehensive income/(loss)	0.3
Closing balance	0.3	0
Defined Benefit Pension Plan Items [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Opening balance	(50.9)
Other comprehensive income/(loss) before reclassifications	0
Amounts reclassified from AOCL	1.2
Actuarial net gains arising during the year	3.7
Net current period other comprehensive income/(loss)	4.9
Closing balance	(46)	(50.9)
Foreign Currency Translation Items [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Opening balance	(60)
Other comprehensive income/(loss) before reclassifications	(20.5)
Amounts reclassified from AOCL	0
Actuarial net gains arising during the year	0
Net current period other comprehensive income/(loss)	(20.5)
Closing balance	$ (80.5)	$ (60)

Related Party Transactions - Ad

Related Party Transactions - Additional Information (Detail) - Smith, Gambrell & Russell, LLP [Member] - USD ($) $ in Millions	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Related Party Transaction [Line Items]
Fees payable to Smith, Gambrell & Russell	$ 0.5	$ 0.3	$ 1.1
Amount due to Smith, Gambrell & Russell	$ 0	$ 0.1