Trinseo (TSE) 10-K 10 Mar 15 2014 FY Annual report Financial data

Document_and_Entity_Informatio

Document and Entity Information (USD $)	12 Months Ended
	Dec. 31, 2014	Mar. 09, 2015
Document And Entity Information [Abstract]
Document Type	10-K
Amendment Flag	FALSE
Document Period End Date	31-Dec-14
Document Fiscal Year Focus	2014
Document Fiscal Period Focus	FY
Entity Registrant Name	Trinseo S.A.
Entity Central Index Key	1519061
Current Fiscal Year End Date	-19
Entity Well-known Seasoned Issuer	No
Entity Current Reporting Status	Yes
Entity Voluntary Filers	No
Entity Filer Category	Non-accelerated Filer
Entity Common Stock, Shares Outstanding		48,769,567
Entity Public Float		$210,382,750

Consolidated_Balance_Sheets

Consolidated Balance Sheets (USD $)	Dec. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Current assets
Cash and cash equivalents	$220,786	$196,503
Accounts receivable, net of allowance	601,066	717,482
Inventories	473,861	530,191
Deferred income tax assets	11,786	9,820
Other current assets	15,164	22,750
Total current assets	1,322,663	1,476,746
Investments in unconsolidated affiliates	167,658	155,887
Property, plant and equipment, net	556,697	606,427
Other assets
Goodwill	34,574	37,273
Other intangible assets, net	165,358	171,514
Deferred income tax assets-noncurrent	46,812	42,938
Deferred charges and other assets	62,354	83,996
Total other assets	309,098	335,721
Total assets	2,356,116	2,574,781
Current liabilities
Short-term borrowings	7,559	8,754
Accounts payable	434,692	509,093
Income taxes payable	9,413	9,683
Deferred income tax liabilities	1,413	2,903
Accrued expenses and other current liabilities	120,928	136,129
Total current liabilities	574,005	666,562
Noncurrent liabilities
Long-term debt	1,194,648	1,327,667
Deferred income tax liabilities-noncurrent	27,311	26,932
Other noncurrent obligations	239,287	210,418
Total noncurrent liabilities	1,461,246	1,565,017
Commitments and contingencies (Note 15)
Shareholders' equity
Common stock, $0.01 nominal value, 50,000,000 shares authorized at December 31, 2014 and 2013, 48,770 shares and 37,270 shares issued and outstanding as of December 31, 2014 and 2013, respectively	488	373
Additional paid-in-capital	547,530	339,055
Accumulated deficit	-151,936	-84,604
Accumulated other comprehensive income (loss)	-75,217	88,378
Total shareholders' equity	320,865	343,202
Total liabilities and shareholders' equity	$2,356,116	$2,574,781

Consolidated_Balance_Sheets_Pa

Consolidated Balance Sheets (Parenthetical) (USD $)	Dec. 31, 2014	Dec. 31, 2013
Statement of Financial Position [Abstract]
Common stock, nominal value	$0.01	$0.01
Common stock, shares authorized	50,000,000,000	50,000,000,000
Common stock, shares issued	48,770,000	37,270,000
Common stock, shares outstanding	48,770,000	37,270,000

Consolidated_Statements_of_Ope

Consolidated Statements of Operations (USD $)	12 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Income Statement [Abstract]
Net sales	$5,127,961	$5,307,414	$5,451,909
Cost of sales	4,830,640	4,949,404	5,115,188
Gross profit	297,321	358,010	336,721
Selling, general and administrative expenses	232,586	216,858	182,069
Equity in earnings of unconsolidated affiliates	47,749	39,138	27,140
Operating income	112,484	180,290	181,792
Interest expense, net	124,923	132,038	109,971
Loss on extinguishment of long-term debt	7,390	20,744
Other expense, net	27,784	27,877	23,979
Income (loss) before income taxes	-47,613	-369	47,842
Provision for income taxes	19,719	21,849	17,560
Net income (loss)	($67,332)	($22,218)	$30,282
Weighted average shares- basic and diluted	43,476	37,270	16,123
Net income (loss) per share- basic and diluted	($1.55)	($0.60)	$1.88

Consolidated_Statements_of_Com

Consolidated Statements of Comprehensive Income (Loss) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014		Dec. 31, 2013		Dec. 31, 2012
Statement of Comprehensive Income [Abstract]
Net income (loss)	($67,332)		($22,218)		$30,282
Other comprehensive income (loss), net of tax (tax amounts shown in millions below for 2014, 2013, and 2012, respectively):
Cumulative translation adjustments (net of tax of $0, $0, and $0.1)	-133,901		53,339		23,872
Pension and other postretirement benefit plans before reclassifications:
Prior service credit (cost) arising during period (net of tax of $3.2, $1.7, and $0)	9,529		10,548
Net gain (loss) arising during period (net of tax of $(15.1), $(1.3), and $(17.7))	-42,442		-3,545		-51,880
Amounts reclassified from accumulated other comprehensive income (loss):
Curtailment and settlement loss (gain) (net of tax of $0.2, $0.6, and $0)	1,570	[1]	1,502	[1]	-247	[1]
Amortization of prior service cost (credit) included in net periodic pension costs (net of tax of $(0.1), $(0.1), and $0.1)	-838	[1]	-890	[1]	94	[1]
Amortization of net loss (gain) included in net periodic pension costs (net of tax of $0.8, $1.0, and $(0.2))	2,487	[1]	2,851	[1]	-454	[1]
Total other comprehensive income (loss)	-163,595		63,805		-28,615
Comprehensive income (loss)	($230,927)		$41,587		$1,667
[1]	These other comprehensive income (loss) components are included in the computation of net periodic benefit costs (see Note 16)

Consolidated_Statements_of_Com1

Consolidated Statements of Comprehensive Income (Loss) (Parenthetical) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2014		Dec. 31, 2013		Dec. 31, 2012
Statement of Comprehensive Income [Abstract]
Cumulative translation adjustments, tax	$0		$0		$0.10
Prior service credit (cost) arising during period, tax	3.2		1.7		0
Net gain (loss) arising during period, tax	-15.1		-1.3		-17.7
Curtailment and settlement loss (gain), tax	0.2	[1]	0.6	[1]	0	[1]
Amortization of prior service cost (credit) included in net periodic pension costs, tax	-0.1	[1]	-0.1	[1]	0.1	[1]
Amortization of net loss (gain) included in net periodic pension costs, tax	$0.80	[1]	$1	[1]	($0.20)	[1]
[1]	These other comprehensive income (loss) components are included in the computation of net periodic benefit costs (see Note 16)

Consolidated_Statements_of_Sha

Consolidated Statements of Shareholders' Equity (USD $)	Total	Common Stock [Member]	Additional Paid-In Capital [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Accumulated Deficit [Member]
In Thousands, except Share data
Balance at Dec. 31, 2011	$120,515	$1	$159,994	$53,188	($92,668)
Balance, Shares at Dec. 31, 2011		137
Contributions from shareholder, value	162,155	372	161,783
Contributions from shareholder, shares		37,133
Net income (loss)	30,282				30,282
Other comprehensive income (loss)	-28,615			-28,615
Stock-based compensation	7,328		7,328
Balance at Dec. 31, 2012	291,665	373	329,105	24,573	-62,386
Balance, Shares at Dec. 31, 2012		37,270
Net income (loss)	-22,218				-22,218
Other comprehensive income (loss)	63,805			63,805
Stock-based compensation	9,950		9,950
Balance at Dec. 31, 2013	343,202	373	339,055	88,378	-84,604
Balance, Shares at Dec. 31, 2013		37,270
Issuance of common stock	198,089	115	197,974
Issuance of common stock, Shares		11,500
Net income (loss)	-67,332				-67,332
Other comprehensive income (loss)	-163,595			-163,595
Stock-based compensation	10,501		10,501
Balance at Dec. 31, 2014	$320,865	$488	$547,530	($75,217)	($151,936)
Balance, Shares at Dec. 31, 2014		48,770

Consolidated_Statements_of_Cas

Consolidated Statements of Cash Flows (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Cash flows from operating activities
Net income (loss)	($67,332)	($22,218)	$30,282
Adjustments to reconcile net income (loss) to net cash provided by operating activities
Depreciation and amortization	103,706	95,196	85,604
Amortization of deferred financing costs and issuance discount	9,937	9,547	8,537
Deferred income tax	4,833	4,215	4,734
Stock-based compensation	10,501	9,950	7,328
Earnings of unconsolidated affiliates, net of dividends	-12,750	-16,638	-6,169
Unrealized net losses on foreign exchange forward contracts	4,554
Contingent gain on sale of business	-623
Loss on extinguishment of debt	7,390	20,744
Prepayment penalty on long-term debt	-3,975
Loss (gain) on sale of businesses and other assets	-116	4,186	263
Impairment charges		13,851	245
Changes in assets and liabilities
Accounts receivable	68,483	-5,643	84,678
Inventories	22,605	55,369	-87,241
Accounts payable and other current liabilities	-5,697	15,001	67,887
Income taxes payable	259	-1,241	-5,142
Other assets, net	-2,527	2,384	-12,672
Other liabilities, net	-22,027	26,632	7,781
Cash provided by operating activities	117,221	211,335	186,115
Cash flows from investing activities
Capital expenditures	-98,606	-73,544	-118,504
Proceeds from capital expenditures subsidy		18,769	6,079
Proceeds from the sale of businesses and other assets	6,257	15,221	253
Payment for working capital adjustment from sale of business	-700
Advance payment received (refunded)		-2,711	2,602
Distributions from unconsolidated affiliates	978	1,055
(Increase) / decrease in restricted cash	-533	7,852	-7,725
Cash used in investing activities	-92,604	-33,358	-117,295
Cash flows from financing activities
Proceeds from initial public offering, net of offering costs	198,087
Deferred financing fees		-48,255	-8,080
Short term borrowings, net	-56,901	-42,877	-37,887
Capital contribution			162,155
Repayments of Term Loans		-1,239,000	-147,000
Proceeds from issuance of Senior Notes		1,325,000
Repayments of Senior Notes	-132,500
Proceeds from Accounts Receivable Securitization Facility	308,638	376,630	113,828
Repayments of Accounts Receivable Securitization Facility	-309,205	-471,696	-130,233
Proceeds from Revolving Facility		405,000	1,105,000
Repayments of Revolving Facility		-525,000	-1,135,000
Cash provided by (used in) financing activities	8,119	-220,198	-77,217
Effect of exchange rates on cash	-8,453	2,367	-559
Net change in cash and cash equivalents	24,283	-39,854	-8,956
Cash and cash equivalents-beginning of period	196,503	236,357	245,313
Cash and cash equivalents-end of period	220,786	196,503	236,357
Supplemental disclosure of cash flow information
Cash paid for income taxes, net of refunds	5,097	24,779	20,444
Cash paid for interest, net of amounts capitalized	119,820	83,509	98,046
Accrual for property, plant and equipment	$18,245	$11,156	$13,155

Organization_and_Business_Acti

Organization and Business Activities	12 Months Ended
	Dec. 31, 2014
Accounting Policies [Abstract]
Organization and Business Activities	NOTE 1—ORGANIZATION AND BUSINESS ACTIVITIES
	Organization
	On June 3, 2010, Bain Capital Everest Manager Holding SCA (the “Parent”), an affiliate of Bain Capital Partners, LLC (“Bain Capital”), was formed through investment funds advised or managed by Bain Capital. Dow Europe Holding B.V. (together with The Dow Chemical Company, “Dow”) retained an indirect ownership interest in the Parent. Trinseo S.A. (“Trinseo”, and together with its subsidiaries, the “Company”) was also formed on June 3, 2010, incorporated under the existing laws of the Grand Duchy of Luxembourg. At that time, all common shares of Trinseo were owned by the Parent. On June 17, 2010, Trinseo acquired 100% of the former Styron business from Dow. The Company commenced operations immediately upon the acquisition of the former Styron business from Dow.
	On May 30, 2014, the Company amended its Articles of Association to effect a 1-for-436.69219 reverse stock split of its issued and outstanding common stock (“reverse split”) and to increase its authorized shares to 50.0 billion. All share and per share data have been retroactively adjusted in the accompanying financial statements to give effect to the reverse split.
	On June 17, 2014, Trinseo completed an initial public offering (the “IPO”) of 11,500,000 ordinary shares at a price of $19.00 per share, which included 1,500,000 shares sold pursuant to the underwriters’ exercise of their over-allotment option. The Company received cash proceeds of $203.2 million from this transaction, net of underwriting discounts. See Note 12 for more information.
	Business Activities
	The Company is a leading global materials company engaged in the manufacture and marketing of emulsion polymers and plastics, including various specialty and technologically differentiated products. The Company develops emulsion polymers and plastics that are incorporated into a wide range of products throughout the world, including tires and other products for automotive applications, carpet and artificial turf backing, coated paper and packaging board, food service packaging, appliances, medical devices, consumer electronics and construction applications, among others.
	The Company’s operations are located in Europe and the Middle East, North America, Latin America, and Asia Pacific (which includes Asia as well as Australia and New Zealand), supplemented by two strategic joint ventures, Americas Styrenics LLC (“AmSty”, a polystyrene joint venture with Chevron Phillips Chemical Company LP) and Sumika Styron Polycarbonate Limited (“Sumika Styron”). Refer to Note 4 for further information regarding our investments in these unconsolidated affiliates.
	The Company has significant manufacturing and production operations around the world, which allow service to its global customer base. As of December 31, 2014, the Company’s production facilities included 34 manufacturing plants (which included a total of 81 production units) at 26 sites across 14 countries, including joint ventures and contract manufacturers. The Company’s manufacturing locations include sites in high-growth emerging markets such as China, Indonesia and Brazil. Additionally, as of December 31, 2014, the Company operated 11 R&D facilities globally, including mini plants, development centers and pilot coaters.

Basis_of_Presentation_and_Summ

Basis of Presentation and Summary of Significant Accounting Policies	12 Months Ended
	Dec. 31, 2014
Accounting Policies [Abstract]
Basis of Presentation and Summary of Significant Accounting Policies	NOTE 2—BASIS OF PRESENTATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES
	Basis of Presentation and Principles of Consolidation
	The accompanying consolidated financial statements of the Company as of December 31, 2014 and 2013 and for each of the three years ended 2014 are prepared in accordance with accounting principles generally accepted in the United States of America (“GAAP”). The consolidated financial statements of the Company contain the accounts of all entities that are controlled and variable interest entities (“VIEs”) for which the Company is the primary beneficiary. A VIE is defined as a legal entity that has equity investors that do not have sufficient equity at risk for the entity to support its activities without additional subordinated financial support or, as a group, the holders of the equity at risk lack (i) the power to direct the entity’s activities or (ii) the obligation to absorb the expected losses or the right to receive the expected residual returns of the entity. A VIE is required to be consolidated by a company if that company is the primary beneficiary. Refer to Note 10 for further discussion of the Company’s accounts receivable securitization facility, which qualifies as a VIE and is consolidated within the Company’s financial statements.
	All intercompany balances and transactions are eliminated. Joint ventures over which the Company has the ability to exercise significant influence that are not consolidated are accounted for by the equity method.
	Certain prior year amounts have been reclassified to conform to the current year presentation. These reclassifications did not have a material impact on the Company’s financial position.
	Use of Estimates in Financial Statement Preparation
	The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the amounts reported in the consolidated financial statements and accompanying notes. Actual amounts could differ from these estimates.
	Concentration of Credit Risk
	Financial instruments that potentially subject the Company to concentrations of credit risk consist principally of cash equivalents and accounts receivables. The Company uses major financial institutions with high credit ratings to engage in transactions involving cash equivalents. The Company minimizes credit risk in its receivables by selling products to a diversified portfolio of customers in a variety of markets located throughout the world.
	The Company performs ongoing evaluations of its customers’ credit and generally does not require collateral. The Company maintains an allowance for doubtful accounts for losses resulting from the inability of specific customers to meet their financial obligations, representing our best estimate of probable credit losses in existing trade accounts receivable. A specific reserve for doubtful receivables is recorded against the amount due from these customers. For all other customers, the Company recognizes reserves for doubtful receivables based on historical experience.
	Financial Instruments
	The carrying amounts of the Company’s financial instruments, including cash and cash equivalents, accounts receivable, accounts payable and accrued and other current liabilities, approximate fair value due to their generally short maturities.
	The estimated fair value of the Company’s 8.750% Senior Notes (as defined in Note 10) is determined using level 2 inputs within the fair value hierarchy. As of December 31, 2014 and 2013, the Senior Notes had a fair value of approximately $1,212.0 million and $1,366.4 million, respectively. When outstanding, the estimated fair values of borrowings under the Company’s Revolving Facility and Accounts Receivable Securitization Facility (as defined in Note 10) are determined using level 2 inputs within the fair value hierarchy. The carrying amounts of borrowings under the Revolving Facility and Accounts Receivable Securitization Facility approximate fair value as these borrowings bear interest based on prevailing variable market rates.
	At times, the Company manages its exposure to changes in foreign currency exchange rates, where possible, by entering into foreign exchange forward contracts. When outstanding, all derivatives, whether designated in hedging relationships or not, are required to be recorded on the balance sheet at fair value. The fair value of the derivatives is determined from sources independent of the Company, including the financial institutions which are party to the derivative instruments. The fair value of derivatives also considers the credit default risk of the paying party. If the derivative is designated as a fair value hedge, the changes in the fair value of the derivative and the hedged item will be recognized in earnings. If the derivative is designated as a cash flow hedge, the effective portion of the change in the fair value of the derivative will be recorded in other comprehensive income and will be recognized in the consolidated statements of operations when the hedged item affects earnings.
	As of December 31, 2014, the Company had foreign exchange forward contracts outstanding that were not designated for hedge accounting treatment, while no such contracts were outstanding as of December 31, 2013. As such, the settlements and changes in fair value of underlying instruments are recognized in “Other expense (income), net” in the consolidated statements of operations. For the years ended December 31, 2014, 2013, and 2012, the Company recognized losses related to these forward contracts of $28.2 million, $0.6 million, and $4.8 million, respectively.
	Forward contracts are entered into with a limited number of counterparties, each of which allows for net settlement of all contracts through a single payment in a single currency in the event of a default on or termination of any one contract. The Company records these foreign exchange forward contracts on a net basis, by counterparty within the consolidated balance sheets.
	The Company presents the cash receipts and payments from hedging activities in the same category as the cash flows from the items subject to hedging relationships. As the items subject to economic hedging relationships are the Company’s operating assets and liabilities, the related cash flows are classified within operating activities in the consolidated statements of cash flows.
	Foreign Currency Translation
	For the majority of the Company’s subsidiaries, the local currency has been identified as the functional currency. For remaining subsidiaries, the U.S. dollar has been identified as the functional currency due to the significant influence of the U.S. dollar on their operations. Gains and losses resulting from the translation of various functional currencies into U.S. dollars are not recorded within the consolidated statements of operations. Rather, they are recorded within the cumulative translation adjustment account as a separate component of shareholders’ equity (accumulated other comprehensive income) on the consolidated balance sheets. The Company translates asset and liability balances at exchange rates in effect at the end of the period and income and expense transactions at the average exchange rates in effect during the period. Gains and losses resulting from foreign currency transactions are recorded within the consolidated statements of operations.
	For the year ended December 31, 2014, the Company recognized net foreign exchange transaction gains of $32.4 million. For the years ended December 31, 2013 and 2012, the Company recognized net foreign exchange transaction losses of $18.3 million and $18.0 million, respectively. These amounts exclude the impacts of foreign exchange forward contracts discussed above. Gains and losses on net foreign exchange transactions are recorded within “Other expense (income), net” in the consolidated statements of operations.
	Environmental Matters
	Accruals for environmental matters are recorded when it is considered probable that a liability has been incurred and the amount of the liability can be reasonably estimated, based on current law and existing technologies. These accruals are adjusted periodically as assessment and remediation efforts progress, or as additional technical or legal information become available. Accruals for environmental liabilities are recorded within “Other noncurrent obligations” in the consolidated balance sheets at undiscounted amounts. As of December 31, 2014 and 2013, there were no accruals for environmental liabilities recorded.
	Environmental costs are capitalized if the costs extend the life of the property, increase its capacity, or mitigate or prevent contamination from future operations. Environmental costs are also capitalized in recognition of legal asset retirement obligations resulting from the acquisition, construction or normal operation of a long-lived asset. Any costs related to environmental contamination treatment and clean-ups are charged to expense. Estimated future incremental operations, maintenance and management costs directly related to remediation are accrued when such costs are probable and reasonably estimable.
	Cash and Cash Equivalents
	Cash and cash equivalents generally include time deposits or highly liquid investments with original maturities of three months or less.
	Inventories
	Inventories are stated at the lower of cost or market, with cost being determined on the first-in, first-out (“FIFO”) method. The Company periodically reviews its inventory for excess or obsolete inventory, and will write-down the excess or obsolete inventory value to its net realizable value, if applicable.
	Property, Plant and Equipment
	Property, plant and equipment are carried at cost less accumulated depreciation and less impairment, if applicable, and are depreciated over their estimated useful lives using the straight-line method. Capitalized costs associated with computer software for internal use are amortized on a straight-line basis, generally over 5 years.
	Expenditures for maintenance and repairs are charged against income as incurred. Expenditures that significantly increase asset value, extend useful asset lives or adapt property to a new or different use are capitalized. These expenditures include planned major maintenance activity or turnaround activities which increase our manufacturing plants’ output and improve production efficiency as compared to pre-turnaround operations. As of December 31, 2014 and 2013, $9.2 million and $13.1 million, respectively, of the Company’s net costs related to turnaround activities were capitalized within “Deferred charges and other assets” in the consolidated balance sheets, and are being amortized over the period until the next scheduled turnaround.
	The Company periodically evaluates actual experience to determine whether events and circumstances have occurred that may warrant revision of the estimated useful lives of property, plant and equipment. Engineering and other costs directly related to the construction of property, plant and equipment are capitalized as construction in progress until construction is complete and such property, plant and equipment is ready and available to perform its specifically assigned function. Upon retirement or other disposal, the asset cost and related accumulated depreciation are removed from the accounts and the net amount, less any proceeds, is charged or credited to income. The Company also capitalizes interest as a component of the cost of capital assets constructed for its own use.
	Impairment and Disposal of Long-Lived Assets
	The Company evaluates long-lived assets for impairment whenever events or changes in circumstances indicate that the carrying amount of an asset or asset group may not be recoverable. When undiscounted future cash flows are not expected to be sufficient to recover an asset’s carrying amount, the asset is written down to its fair value based on a discounted cash flow analysis utilizing market participant assumptions.
	Long-lived assets to be disposed of by sale are classified as held-for-sale and are reported at the lower of carrying amount or fair value less cost to sell, and depreciation is ceased. Long-lived assets to be disposed of in a manner other than by sale are classified as held-and-used until they are disposed.
	Goodwill and Other Intangible Assets
	The Company records goodwill when the purchase price of a business acquisition exceeds the estimated fair value of net identified tangible and intangible assets acquired. Goodwill is tested for impairment at the reporting unit level annually, or more frequently when events or changes in circumstances indicate that the fair value of a reporting unit has more likely than not declined below its carrying value. The Company utilizes a market approach and an income approach (under the discounted cash flow method) to calculate the fair value of its reporting units. The annual impairment assessment is completed using a measurement date of October 1st. No goodwill impairment losses were recorded in the years ended December 31, 2014, 2013 and 2012.
	Finite-lived intangible assets, such as our intellectual property and manufacturing capacity rights, are amortized on a straight-line basis and are reviewed for impairment or obsolescence if events or changes in circumstances indicate that their carrying amount may not be recoverable. If impaired, intangible assets are written down to fair value based on discounted cash flows. No intangible asset impairment losses were recorded in the years ended December 31, 2014, 2013 and 2012
	Deferred Financing Fees
	Capitalized fees and costs incurred in connection with the Company’s financing arrangements are recorded in “Deferred charges and other assets” within the consolidated balance sheets. For the Senior Notes (and the Term Loans, prior to their repayment in January 2013), deferred financing fees are amortized over the term of the agreement using the effective interest method, while for the Revolving Facility and the Accounts Receivable Securitization Facility, deferred financing fees are amortized using the straight-line method over the term of the respective facility. Amortization of deferred financing fees is recorded in “Interest expense, net” within the consolidated statements of operations.
	Investments in Unconsolidated Affiliates
	Investments in unconsolidated affiliates in which the Company has the ability to exercise significant influence (generally, 20% to 50% owned companies) are accounted for using the equity method. Investments are evaluated for impairment whenever events or changes in circumstances indicate that the carrying amount of the investment may not be recoverable. An impairment loss is recorded whenever a decline in fair value of an investment in an unconsolidated affiliate below its carrying amount is determined to be other-than-temporary.
	Sales
	Sales are recognized when the revenue is realized or realizable and the earnings process is complete, which occurs when risk and title to the product transfers to the customer, typically at the time shipment is made. As such, title to the product generally passes when the product is delivered to the freight carrier. Standard terms of delivery are included in contracts of sale, order confirmation documents and invoices. Freight costs and any directly related costs of transporting finished product to customers are recorded as “Cost of sales” in the consolidated statements of operations. Taxes on sales are excluded from net sales.
	Sales are recorded net of estimates for returns and price allowances, including discounts for prompt payment and volume-based incentives.
	Cost of Sales
	The Company classifies the costs of manufacturing and distributing its products as cost of sales. Manufacturing costs include raw materials, utilities, packaging and fixed manufacturing costs associated with production. Fixed manufacturing costs include such items as plant site operating costs and overhead, production planning, depreciation and amortization, repairs and maintenance, environmental, and engineering costs. Distribution costs include shipping and handling costs.
	Selling, General and Administrative Expenses
	Selling, general and administrative (“SG&A”) expenses are charged to expense as incurred. SG&A expenses are the cost of services performed by the marketing and sales functions (including sales managers, field sellers, marketing research, marketing communications and promotion and advertising materials) and by administrative functions (including product management, research and development (“R&D”), business management, customer invoicing, and human resources). R&D expenses include the cost of services performed by the R&D function, including technical service and development, process research including pilot plant operations, and product development.
	Total R&D costs included in SG&A expenses were approximately $53.4 million, $49.7 million and $48.3 million for the years ended December 31, 2014, 2013 and 2012, respectively.
	The Company expenses promotional and advertising costs as incurred to SG&A expenses. Total promotional and advertising expenses were approximately $2.9 million, $3.0 million and $3.2 million for the years ended December 31, 2014, 2013 and 2012, respectively.
	Pension and Postretirement Benefits Plans
	The Company has several defined benefit plans, under which participants earn a retirement benefit based upon a formula set forth in the plan. The Company also provides certain health care and life insurance benefits to retired employees mainly in the United States and Brazil. The plans provide health care benefits, including hospital, physicians’ services, drug and major medical expense coverage, and life insurance benefits.
	Accounting for defined benefit pension plans and other postretirement benefit plans, and any curtailments and settlements thereof, requires various assumptions, including, but not limited to, discount rates, expected rates of return on plan assets and future compensation growth rates. The Company evaluates these assumptions at least once each year, or as facts and circumstances dictate, and makes changes as conditions warrant.
	A settlement is a transaction that is an irrevocable action that relieves the employer (or the plan) of primary responsibility for a pension or postretirement benefit obligation, and that eliminates significant risks related to the obligation and the assets used to effect the settlement. When a settlement occurs, the Company does not record settlement gains or losses during interim periods when the cost of all settlements in a year is less than or equal to the sum of the service cost and interest cost components of net periodic pension cost for the plan in that year.
	Income Taxes
	The provision for income taxes is determined using the asset and liability approach of accounting for income taxes. Under this approach, deferred taxes represent the future tax consequences expected to occur when the reported amounts of assets and liabilities are recovered or paid. The provision for income taxes represents income taxes paid or payable for the current year plus the change in deferred taxes during the year. Deferred taxes result from differences between the financial and tax basis of the Company’s assets and liabilities and are adjusted for changes in tax rates and tax laws when changes are enacted. Valuation allowances are recorded to reduce deferred tax assets when it is more likely than not that a tax benefit will not be realized. Provision has been made for income taxes on unremitted earnings of subsidiaries and affiliates, except for subsidiaries in which earnings are deemed to be indefinitely invested.
	The Company recognizes the financial statement effects of uncertain income tax positions when it is more likely than not, based on the technical merits, that the position will be sustained upon examination. The Company accrues for other tax contingencies when it is probable that a liability to a taxing authority has been incurred and the amount of the contingency can be reasonably estimated. Interest accrued related to unrecognized tax and income tax related penalties are included in the provision for income taxes. The current portion of uncertain income taxes positions is recorded in “Income taxes payable” while the long-term portion is recorded in “Other noncurrent obligations” in the consolidated balance sheets.
	Income tax expense recognized for the year ended December 31, 2012 includes cumulative adjustments of $4.1 million and $2.0 million from 2010 and 2011, respectively, which resulted in a reduction of income tax expense, net, of approximately $6.1 million. These adjustments relate to the correction of prior period errors, which resulted from the reconciliation of the income tax provision to tax return positions completed during 2012. The Company believes this is not material to its results of operations for the year ended December 31, 2012.
	Stock-based Compensation
	Stock-based compensation expense is measured at the grant date, based on the fair value of the award. Time (service)-based restricted stock awards are generally recognized as expense on a graded vesting basis over the related service period. For performance-based restricted stock awards, the Company recognizes compensation cost if and when it concludes that it is probable that the related performance condition will be achieved. When applicable, the Company calculates the fair value of its performance-based restricted stock awards using a combination of a call option and digital option model.
	Forfeitures are estimated at the time of grant and revised, if necessary, in subsequent periods if actual forfeitures differ from those estimates. Stock-based compensation expense recognized in our consolidated financial statements is based on awards that are ultimately expected to vest.
	Periodically, the Parent may sell non-transferable restricted stock to certain officers and key members of management of the Company. Stock-based compensation expense on this non-transferable restricted stock is recognized if the non-transferable restricted stock is purchased at a price which is less than the fair value of the Parent’s common stock.
	Recent Accounting Guidance
	In February 2013, the Financial Accounting Standards Board (“FASB”) issued amendments for the recognition, measurement, and disclosure of obligations resulting from joint and several liability arrangements for which the total amount of the obligation is fixed at the reporting date, except for obligations addressed within existing guidance. This guidance requires an entity to measure those obligations as the sum of the amount the reporting entity agreed to pay on the basis of its arrangement among its co-obligors and any additional amount the reporting entity expects to pay on behalf of its co-obligors. This guidance also requires an entity to disclose the nature and amount of the obligation as well as other information about those obligations. The Company adopted this guidance on a retrospective basis effective January 1, 2014, and the adoption did not have a significant impact on the Company’s financial position or results of operations.
In July 2013, the FASB issued guidance to clarify the presentation of an unrecognized tax benefit when a net operating loss carryforward, a similar tax loss, or a tax credit carryforward exists. The new guidance requires that unrecognized tax benefits be netted against all available same-jurisdiction losses or other tax carryforwards that would be utilized, rather than only against carryforwards that are created by the unrecognized tax benefits. The Company adopted this guidance prospectively effective January 1, 2014, and the adoption did not have a significant impact on the Company’s financial position or results of operations.
In April 2014, the FASB issued amendments to guidance for reporting discontinued operations and disposals of components of an entity. The amended guidance requires that a disposal representing a strategic shift that has (or will have) a major effect on an entity’s financial results or a business activity classified as held-for-sale should be reported as discontinued operations. The amendments also expand the disclosure requirements for discontinued operations and add new disclosures for individually significant dispositions that do not qualify as discontinued operations. The amendments are effective prospectively for fiscal years, and interim reporting periods within those years, beginning after December 15, 2014 (early adoption is permitted only for disposals that have not been previously reported). The implementation of the amended guidance is not expected to have a material impact on the Company’s consolidated financial position or results of operations.
In May 2014, the FASB and the International Accounting Standards Board (“IASB”) jointly issued new guidance which clarifies the principles for recognizing revenue and develops a common revenue standard for GAAP and International Financial Reporting Standards (“IFRS”). The core principle of the guidance is that an entity should recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. This guidance is effective for public entities for annual and interim periods beginning after December 15, 2016. Early adoption is not permitted under GAAP and retrospective application is permitted, but not required. The Company is currently assessing the impact of adopting this guidance on its financial statements and results of operations.
In June 2014, the FASB issued updated guidance related to stock compensation. The updated guidance requires that a performance target that affects vesting, and that could be achieved after the requisite service period, be treated as a performance condition. As such, the performance target should not be reflected in estimating the grant date fair value of the award. This update further clarifies that compensation cost should be recognized in the period in which it becomes probable that the performance target will be achieved and should represent the compensation cost attributable to the periods for which the requisite service has already been rendered. The updated guidance is effective for annual and interim periods beginning after December 15, 2015 and can be applied either (a) prospectively to all awards granted or modified after the effective date or (b) retrospectively to all awards with performance targets that are outstanding as of the beginning of the earliest annual period presented and to all newly granted or modified awards thereafter. Early adoption is permitted. This guidance is not relevant to the Company’s currently outstanding awards; however, the Company will continue to evaluate the applicability of this guidance to future awards as necessary.
In January 2015, the FASB issued guidance to simplify income statement classification by removing the concept of extraordinary items from U.S. GAAP. This guidance is effective for public entities beginning after December 15, 2015, with early adoption permitted, but only as of the beginning of the fiscal year of adoption. The implementation of this guidance is not expected to have a material impact on the Company’s financial statements.

Acquisitions_and_Divestitures

Acquisitions and Divestitures	12 Months Ended
	Dec. 31, 2014
Business Combinations [Abstract]
Acquisitions and Divestitures	NOTE 3—ACQUISITIONS AND DIVESTITURES
	Styron Acquisition
	As discussed in Note 1, on March 2, 2010, STY Acquisition Corp. (“STY Acquisition”), an affiliate of Bain Capital, entered into a sale and purchase agreement (the “Purchase Agreement”) with Dow, Styron LLC and Styron Holding B.V. (together with Styron LLC, the “Styron Holdcos”) pursuant to which STY Acquisition agreed to acquire 100% of the outstanding equity interests of the Styron Holdcos. STY Acquisition, subsequently (but prior to the close of the transaction) assigned its rights and obligations under the Purchase Agreement to Styron S.à r.l., the Company’s indirect wholly owned subsidiary.
	The Company accounted for the Acquisition under the purchase method of accounting, whereby the purchase price paid, net of working capital adjustments, was allocated to the acquired assets and liabilities at fair value. As of June 17, 2011, the one-year measurement period surrounding the Acquisition ended. During 2014, an adjustment was identified related to one of our postretirement benefit plans, which dated back to the initial Acquisition accounting. As such, the Company recorded a $1.7 million increase to goodwill to correct our final purchase price allocation, with the offset recorded to postretirement benefit liabilities. The Company does not believe this adjustment is material to the current or any prior period financial statements. Refer to Note 16 for further discussion.
	As part of the Acquisition, the Company has been indemnified for various tax matters, including income tax and value add taxes, as well as legal liabilities which have been incurred prior to the Acquisition. Conversely, certain tax matters which the Company has benefitted from are subject to reimbursement by Trinseo to Dow. These amounts have been estimated and provisional amounts have been recorded based on the information known during the measurement period; however, these amounts remain subject to change based on the completion of our annual statutory filings, tax authority review as well as a final resolution with Dow on amounts due to and due from the Company. Management believes the Company’s estimates and assumptions are reasonable under the circumstances, however, settlement negotiations or changes in estimates around pre-acquisition indemnifications could result in a material impact on the consolidated financial statements.
	During 2013, the Company received $6.7 million, net of tax indemnity from Dow for income taxes paid to the taxing authorities relating to the period prior to the Acquisition. This indemnity amount was previously recorded within “Accounts receivable, net of allowance” in the consolidated balance sheets. There were no other indemnity payments received from Dow or indemnity payments to Dow during the years ended December 31, 2014, 2013, and 2012, respectively.
	Divestiture of Expandable Polystyrene Business
	In June 2013, the Company’s board of directors approved the sale of its EPS business within the Company’s Styrenics segment, under a sale and purchase agreement which was signed in July 2013. The sale closed on September 30, 2013 and the Company received $15.2 million of sales proceeds during the third quarter of 2013, subject to a $0.7 million working capital adjustment which was paid by the Company during the first quarter of 2014 and is reflected within investing activities in the consolidated statement of cash flows for the year ended December 31, 2014. The Company recognized a loss from the sale of $4.2 million recorded in “Other expense (income), net” in the consolidated statement of operations for the year ended December 31, 2013. The loss calculation is as follows:
	Assets
	Inventories	$	8,135
	Property, plant and equipment, net		9,401
	Other intangibles assets, net		1,624
	Goodwill		383
	Total assets sold	$	19,543
	Liabilities
	Pension and other benefits	$	791
	Total liabilities sold	$	791
	Net assets sold	$	18,752
	Sales proceeds, net of amount paid to buyer of $0.7 million		14,566
	Loss on sale	$	4,186
	EPS business results of operations were not classified as discontinued operations as the Company will have significant continuing cash flows as a result of a long-term supply agreement of styrene monomer to the EPS business, which was entered into contemporaneously with the sale and purchase agreement. The supply agreement has an initial term of approximately 10 years from the closing date of the sale and will continue year-to-year thereafter. Under the supply agreement, we supply a minimum of approximately 77 million pounds and maximum of approximately 132 million pounds of styrene monomer annually or equivalent to 70% to 100% of the EPS business’s historical production consumption.
	Further, under the terms of the sale and purchase agreement, should the divested EPS business record EBITDA (as defined therein) greater than zero for fiscal year 2014, the Company will receive an incremental payment of €0.5 million. As of December 31, 2014, it was considered probable that this EBITDA threshold has been met in accordance with the terms of the sale agreement. As such, the Company recorded the contingent gain on sale of €0.5 million (approximately $0.6 million) related to this incremental payment for the year ended December 31, 2014, which is expected to be received in the first quarter of 2015.
	Livorno Land Sale
	In April 2014, the Company completed the sale of a portion of land at its manufacturing site in Livorno, Italy for a purchase price of €4.95 million (approximately $6.8 million). As a result, the Company recorded a gain on sale of $0.1 million within “Other expense (income), net” in the consolidated statements of operations for the year ended December 31, 2014. As of December 31, 2013, this land was classified as held-for-sale within the caption “Other current assets” in the consolidated balance sheets.

Investments_in_Unconsolidated_

Investments in Unconsolidated Affiliates	12 Months Ended
	Dec. 31, 2014
Equity Method Investments and Joint Ventures [Abstract]
Investments in Unconsolidated Affiliates	NOTE 4—INVESTMENTS IN UNCONSOLIDATED AFFILIATES
	The Company is supplemented by two strategic joint ventures: AmSty (a polystyrene joint venture with Chevron Phillips Chemical Company LP) and Sumika Styron (a polycarbonate joint venture with Sumitomo Chemical Company Limited).
	As of December 31, 2014 and 2013, respectively, the Company’s investment in AmSty was $133.5 million and $118.3 million, which was $108.4 million and $130.8 million less than the Company’s 50% share of AmSty’s underlying net assets. These amounts represent the difference between the book value of assets contributed to the joint venture at the time of formation (May 1, 2008) and the Company’s 50% share of the total recorded value of the joint venture’s assets and certain adjustments to conform with the Company’s accounting policies. This difference is being amortized over a weighted average remaining useful life of the contributed assets of approximately 5.7 years as of December 31, 2014. The Company received dividends from AmSty of $35.0 million, $22.5 million, and $20.0 million for the years ended December 31, 2014, 2013, and 2012, respectively.
	As of December 31, 2014 and 2013, respectively, the Company’s investment in Sumika Styron was $34.1 million and $37.6 million, which was $21.3 million and $20.8 million greater than the Company’s 50% share of Sumika Styron’s underlying net assets. These amounts represent the fair value of certain identifiable assets which have not been recorded on the historical financial statements of Sumika Styron. This difference is being amortized over the remaining useful life of the contributed assets of 10.8 years as of December 31, 2014. The Company received dividends from Sumika Styron of $1.0 million, $1.1 million, and $1.0 million for the years ended December 31, 2014, 2013, and 2012, respectively.
	Equity in earnings from unconsolidated affiliates was $47.7 million, $39.1 million and $27.1 million for the years ended December 31, 2014, 2013, and 2012, respectively.
	Both AmSty and Sumika Styron are privately held companies; therefore, quoted market prices for their stock are not available. The summarized financial information of the Company’s unconsolidated affiliates is shown below:
		December 31,
		2014		2013
	Current assets	$	498,516	$	528,223
	Noncurrent assets		313,648		333,894
	Total assets	$	812,164	$	862,117
	Current liabilities	$	253,507	$	281,823
	Noncurrent liabilities		49,084		48,415
	Total liabilities	$	302,591	$	330,238
		Year Ended
		December 31,
		2014		2013		2012
	Sales	$	2,161,232	$	2,281,045	$	2,058,060
	Gross profit	$	117,667	$	94,148	$	82,511
	Net income	$	52,957	$	38,504	$	21,408
	Sales to unconsolidated affiliates for the years ended December 31, 2014, 2013, and 2012 were $6.5 million, $8.2 million and $9.5 million, respectively. Purchases from unconsolidated affiliates were $290.3 million, $274.4 million and $269.1 million for the years ended December 31, 2014, 2013 and 2012, respectively.
	As of December 31, 2014 and 2013, respectively, $2.0 million and $3.3 million due from unconsolidated affiliates was included in “Accounts receivable, net of allowance” and $28.6 million and $29.9 million due to unconsolidated affiliates was included in “Accounts payable” in the consolidated balance sheets.

Accounts_Receivable

Accounts Receivable	12 Months Ended
	Dec. 31, 2014
Receivables [Abstract]
Accounts Receivable	NOTE 5—ACCOUNTS RECEIVABLE
	Accounts receivable consisted of the following:
		December 31,
		2014			2013
	Trade receivables	$	497,538		$	584,160
	Non-income tax receivables		75,083			94,069
	Other receivables		34,713			45,119
	Less: allowance for doubtful accounts		(6,268	)		(5,866	)
	Total	$	601,066		$	717,482
	The allowance for doubtful accounts was approximately $6.3 million and $5.9 million as of December 31, 2014 and 2013, respectively. For the years ended December 31, 2014 and 2012, respectively, the Company recognized bad debt expense of $1.1 million and $0.3 million. As a result of changes in the estimate of allowance for doubtful accounts, for the year ended December 31, 2013 the Company recognized a benefit of $3.0 million.

Inventories

Inventories	12 Months Ended
	Dec. 31, 2014
Inventory Disclosure [Abstract]
Inventories	NOTE 6—INVENTORIES
	Inventories consisted of the following:
		December 31,
		2014		2013
	Finished goods	$	235,949	$	252,602
	Raw materials and semi-finished goods		205,061		240,858
	Supplies		32,851		36,731
	Total	$	473,861	$	530,191

Property_Plant_and_Equipment

Property, Plant and Equipment	12 Months Ended
	Dec. 31, 2014
Property, Plant and Equipment [Abstract]
Property, Plant and Equipment	NOTE 7—PROPERTY, PLANT AND EQUIPMENT
	Property, plant and equipment consisted of the following:
			Estimated Useful		December 31,
			Lives (Years)		2014				2013
	Land		Not applicable		$	47,196			$	50,982
	Land and waterway improvements		20-Jan			13,139				13,603
	Buildings		Feb-40			55,693				58,447
	Machinery and equipment(1)		20-Jan			640,861				627,068
	Utility and supply lines		10-Jan			7,679				7,100
	Leasehold interests		Jan-45			45,759				50,009
	Other property		8-Jan			24,560				27,260
	Construction in process		Not applicable			46,193				55,753
	Property, plant and equipment					881,080				890,222
	Less: accumulated depreciation					(324,383	)			(283,795	)
	Property, plant and equipment, net				$	556,697			$	606,427
	-1	Approximately 94% of our machinery and equipment had a useful life of three to ten years as of December 31, 2014 and 2013.
			Year Ended
			December 31,
			2014				2013				2012
	Depreciation expense		$	75,286			$	75,401			$	68,312
	Capitalized interest		$	4,192			$	3,142			$	6,178
	During the year ended December 31, 2013, the Company determined that the long-lived assets at our polycarbonate manufacturing facility in Stade, Germany should be assessed for impairment driven primarily by continued losses experienced in the Company’s polycarbonate business. This assessment indicated that the carrying amount of the long-lived assets at this facility were not recoverable when compared to the expected undiscounted cash flows of the polycarbonate business. Based upon the assessment of fair value of this asset group, the Company concluded these assets were fully impaired as of December 31, 2013. The fair value of the asset group was determined under the income approach utilizing a discounted cash flow (“DCF”) model. The key assumptions used in the DCF model included growth rates and cash flow projections, discount rate, tax rate and an estimated terminal value.
	As a result, the Company recorded an impairment loss on these assets of approximately $9.2 million for the year ended December 31, 2013. The amount was recorded within “Selling, general and administrative expenses” in the consolidated statements of operations and allocated entirely to the Engineered Polymers segment.

Goodwill_and_Intangible_Assets

Goodwill and Intangible Assets	12 Months Ended
	Dec. 31, 2014
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill and Intangible Assets	NOTE 8—GOODWILL AND INTANGIBLE ASSETS
	Goodwill
	The following table shows changes in the carrying amount of goodwill, by segment, from December 31, 2012 to December 31, 2013 and from December 31, 2013 to December 31, 2014, respectively:
			Emulsion Polymers								Plastics								Total
			Latex				Synthetic				Styrenics				Engineered
							Rubber								Polymers
	Balance at December 31, 2012		$	14,280			$	9,780			$	8,691			$	3,352			$	36,103
	Divestiture (Note 3)			—				—				(383	)			—				(383	)
	Foreign currency impact			621				425				361				146				1,553
	Balance at December 31, 2013		$	14,901			$	10,205			$	8,669			$	3,498			$	37,273
	Purchase accounting adjustment (Note 16)*			664				455				404				156				1,679
	Foreign currency impact			(1,750	)			(1,199	)			(1,018	)			(411	)			(4,378	)
	Balance at December 31, 2014		$	13,815			$	9,461			$	8,055			$	3,243			$	34,574
	*	The purchase price adjustment for the year ended December 31, 2014 relates to the Company’s other postretirement benefit obligations provided to its employees in Brazil. Refer to Note 16 to the consolidated financial statements for a detailed discussion of this adjustment.
	Goodwill impairment testing is performed annually as of October 1st. In 2014, the Company performed its annual impairment test for goodwill and determined that the estimated fair value of each reporting unit was substantially in excess of the carrying value indicating that none of the Company’s goodwill was impaired. The Company concluded there were no goodwill impairments or triggering events for the years ended December 31, 2014, 2013, and 2012.
	Other Intangible Assets
	The following table provides information regarding the Company’s other intangible assets as of December 31, 2014 and 2013, respectively:
							December 31, 2014												December 31, 2013
			Estimated				Gross				Accumulated				Net				Gross			Accumulated			Net
			Useful Life				Carrying				Amortization								Carrying			Amortization
			(Years)				Amount												Amount
	Developed technology			15			$	188,854			$	(56,782	)		$	132,072			$	210,546		$	(49,713	)	$	160,833
	Manufacturing Capacity Rights			6				23,095				(2,809	)			20,286				—			—			—
	Software			5				13,177				(6,441	)			6,736				11,034			(4,099	)		6,935
	Software in development			N/A				6,000				—				6,000				3,746			—			3,746
	Other			N/A				264				—				264				—			—			—
	Total						$	231,390			$	(66,032	)		$	165,358			$	225,326		$	(53,812	)	$	171,514
	In March 2014, the Company entered into an agreement with material supplier JSR Corporation, Tokyo (“JSR”) to acquire its current production capacity rights at the Company’s rubber production facility in Schkopau, Germany for a purchase price of €19.0 million (approximately $26.1 million based upon the acquisition date foreign exchange rate). Prior to this agreement, JSR held 50% of the capacity rights of one of the Company’s three solution styrene-butadiene rubber (“SSBR”) production trains in Schkopau. As a result, effective March 31, 2014, the Company had full capacity rights to this production train. The €19.0 million purchase price was recorded in “Other intangible assets, net” in the consolidated balance sheets, and is being amortized over its estimated useful life of approximately 6.0 years. Further, the purchase price was recorded within capital expenditures in investing activities in the consolidated statement of cash flows for the year ended December 31, 2014.
	Amortization expense related to finite-lived intangible assets totaled $19.6 million, $15.7 million, and $14.7 million, for the years ended December 31, 2014, 2013 and 2012, respectively.
	The following table details the Company’s estimated amortization expense for the next five years, excluding any amortization expense related to software currently in development:
	Estimated Amortization Expense for the Next Five Years
	2015				2016				2017				2018				2019
		$19,353			$	18,788			$	17,952			$	17,252			$	17,000

Accounts_Payable

Accounts Payable	12 Months Ended
	Dec. 31, 2014
Payables and Accruals [Abstract]
Accounts Payable	NOTE 9—ACCOUNTS PAYABLE
	Accounts payable consisted of the following:
		December 31,
		2014		2013
	Trade payables	$	383,297	$	462,304
	Other payables		51,395		46,789
	Total	$	434,692	$	509,093

Debt

Debt	12 Months Ended
	Dec. 31, 2014
Debt Disclosure [Abstract]
Debt	NOTE 10—DEBT
	Debt consisted of the following:
		December 31,
		2014			2013
	Senior Secured Credit Facility
	Term Loans	$	—		$	—
	Revolving Facility		—			—
	Senior Notes		1,192,500			1,325,000
	Accounts Receivable Securitization Facility		—			—
	Other indebtedness		9,707			11,421
	Total debt		1,202,207			1,336,421
	Less: current portion		(7,559	)		(8,754	)
	Total long-term debt	$	1,194,648		$	1,327,667
	The Company was in compliance with all debt covenant requirements as of December 31, 2014. Total accrued interest on outstanding debt as of December 31, 2014 and 2013 was $43.5 million and $48.3 million, respectively. Accrued interest is recorded in “Accrued expenses and other current liabilities” within the consolidated balance sheets.
	The following is a summary of Trinseo’s debt instruments.
	Senior Secured Credit Facility
	In June 2010, the Company entered into a credit agreement (the “Senior Secured Credit Facility”) with lenders which included (i) $800.0 million of senior secured term loans (the “2010 Term Loans”) and a (ii) $240.0 million revolving credit facility (the “Revolving Facility”). On February 2, 2011, the Senior Secured Credit Facility was amended (the “2011 Amendment”) to increase the available borrowings under the senior secured term loans from $780.0 million to $1.6 billion. Pursuant to the amendment, the Company borrowed an aggregate principal amount of $1.4 billion (the “2011 Term Loans”, with the 2010 Term Loans, collectively referred to as the “Term Loans”)
	In July 2012, the Company further amended the Senior Secured Credit Facility (the “2012 Amendment”) that provided for an increase in the Company’s total leverage ratio and decrease the interest coverage ratio as well as an increase in the permitted accounts receivable securitization facility and increases in the borrowing rates of the Term Loans. The 2012 Amendment became effective on August 9, 2012 with the repayment of $140.0 million of 2011 Term Loans using the proceeds from equity contribution from the Parent. As a result, the 2011 Term Loans were determined to be modified in accordance with generally accepted accounting principles. The Company capitalized $6.2 million of the issuance costs paid to the creditors of the 2011 Term Loans, with the remaining $2.3 million of third-party fees associated with the 2011 Term Loans expensed as incurred within “Other expense (income), net” in the consolidated statement of operations for the year ended December 31, 2012. Costs of $1.2 million which were paid to the creditors of the Revolving Facility were also capitalized, to be amortized over the remaining term of the Revolving Facility.
	In January 2013, the Company again amended the Senior Secured Credit Facility (the “2013 Amendment”) to, among other things, increase its Revolving Facility borrowing capacity from $240.0 million to $300.0 million, decrease the borrowing rate of the Revolving Facility through a decrease in the applicable margin rate from 4.75% to 3.00% as applied to base rate loans (which shall bear interest at a rate per annum equal to the base rate plus the applicable margin (as defined therein)), or 5.75% to 4.00% as applied to LIBO rate loans (which shall bear interest at a rate per annum equal to the LIBO rate plus the applicable margin and the mandatory cost (as defined therein), if applicable), and extend the maturity date to January 2018. Concurrently, Company repaid it’s then outstanding 2011 Term Loans of $1,239.0 million using the proceeds from its sale of $1,325.0 million aggregate principal amount of the 8.750% Senior Secured Notes issued in January 2013.
	Prior to the 2013 Amendment, the Senior Secured Credit Facility required that the Company comply with certain affirmative and negative covenants, including restrictions with respect to payment of dividends and other distributions to shareholders, and financial covenants that include the maintenance of certain financial ratios. These ratios include both a maximum leverage ratio no greater than 5.25 to 1.00 and an interest coverage ratio no less than 2.00 to 1.00 for the most recent twelve-month period. Under the terms of the Senior Secured Credit Facility, an event of default can be cured by a Specified Equity Contribution, as defined under the Senior Secured Credit Facility. On May 8, 2012, the Company received a $22.2 million equity contribution from the Parent in order to cure its covenant default and to meet its required leverage ratio for the period ended March 31, 2012. The Company remained in compliance with all debt covenants in the remainder of 2012.
	The 2013 Amendment replaced the Company’s total leverage ratio requirement with a first lien net leverage ratio (as defined under the 2013 Amendment) and removed the interest coverage ratio requirement. If the outstanding balance on the Revolving Facility exceeds 25% of the $300.0 million borrowing capacity (excluding undrawn letters of credit up to $10.0 million) at a quarter end, then the Company’s first lien net leverage ratio may not exceed 5.25 to 1.00 for the quarter ending March 31, 2013, 5.00 to 1.00 for the subsequent quarters through December 31, 2013, 4.50 to 1.00 for each of the quarters ending in 2014 and 4.25 to 1.00 for each of the quarters ending in 2015 and thereafter.
	As a result of the 2013 Amendment and repayment of the term loans in January 2013, the Company recognized a $20.7 million loss on extinguishment of debt during the first quarter of 2013, which consisted of the write-off of existing unamortized deferred financing fees and debt discount attributable to the Term Loans. Fees and expenses incurred in connection with the 2013 Amendment were $5.5 million, which were capitalized.
	Capitalized fees and costs incurred in connection with the Company’s borrowings are recorded in “Deferred charges and other assets” within the consolidated balance sheets. For the Term Loans, deferred financing fees and debt discounts were amortized over the term of the respective loan agreements using the effective interest method, while for the Revolving Facility deferred financing fees are being amortized using a straight-line method over the term of the facility. Amortization of deferred financing fees and debt discounts are recorded in “Interest expense, net” in the consolidated statements of operations.
	Unamortized deferred financing fees related to the Revolving Facility were $8.8 million and $11.7 million as of December 31, 2014 and 2013, respectively. The Company recorded interest expense relating to the amortization of deferred financing fees and debt discounts related to the entire Senior Secured Credit Facility, respectively, of $2.9 million and zero for the year ended December 31, 2014; $3.1 million and $0.1 million for the year ended December 31, 2013; and $6.5 million and $0.5 million for the year ended December 31, 2012.
	As of December 31, 2014, there were no amounts outstanding under the Revolving Facility, while available borrowings under the facility were $293.3 million (net of $6.7 million outstanding letters of credit). As of December 31, 2013, there were no amounts outstanding under the Revolving Facility, while available borrowings under the facility were $292.7 million (net of $7.3 million outstanding letters of credit). All obligations under the Revolving Facility are guaranteed and collateralized by substantially all of the tangible and intangible assets of the Company’s subsidiaries.
	Interest charges, excluding interest expense relating to the amortization of deferred financing fees and debt discounts, incurred on the Term Loans and Revolving Facility, respectively, were zero and $1.8 million for the year ended December 31, 2014, $7.7 million and $2.8 million for the year ended December 31, 2013, and $91.0 million and $6.0 million for the year ended December 31, 2012. Cash paid related to interest incurred on the Term Loans and Revolving Facility, respectively, was zero and $1.9 million for the year ended December 31, 2014, $16.5 million and $2.8 million for the year ended December 31, 2013, and $87.6 million and $6.1 million for the year ended December 31, 2012.
	Senior Notes
	In January 2013, the Company issued $1,325.0 million 8.750% Senior Secured Notes (the “Senior Notes”). Interest on the Senior Notes is payable semi-annually on February 1st and August 1st of each year, which commenced on August 1, 2013. The notes will mature on February 1, 2019, at which time the principal amounts then outstanding will be due and payable. The proceeds from the issuance of the Senior Notes were used to repay all of the Company’s outstanding Term Loans and related refinancing fees and expenses.
	The Company may redeem all or part of the Senior Notes at any time prior to August 1, 2015 by paying a call premium, plus accrued and unpaid interest to the redemption date. The Company may redeem all or part of the Senior Notes at any time after August 1, 2015 at a redemption price equal to the percentage of principal amount set forth below plus accrued and unpaid interest, if any, on the notes redeemed, to the applicable date of redemption, if redeemed during the twelve-month period beginning on of the year indicated below:
	12-month period commencing August 1 in Year	Percentage
	2015		104.375	%
	2016		102.188	%
	2017 and thereafter		100	%
	In addition, at any time prior to August 1, 2015, the Company may redeem up to 35% of the aggregate principal amount of the notes at a redemption price equal to 108.750% of the face amount thereof plus accrued and unpaid interest, if any, to the redemption date, with the net cash proceeds that the Company raises in certain equity offerings. The Company may also redeem, during any 12-month period commencing from the issue date until August 1, 2015, up to 10% of the original principal amount of the Senior Notes at a redemption price equal to 103% of the principal amount thereof, plus accrued and unpaid interest, if any, to, but not including, the date of redemption.
	In July 2014, using proceeds from the Company’s IPO (see Note 12), the Company redeemed $132.5 million in aggregate principal amount of the Senior Notes, including a 103% call premium totaling $4.0 million, together with accrued and unpaid interest thereon of $5.2 million. As a result of this redemption, during the year ended December 31, 2014 the Company incurred a loss on the extinguishment of debt of approximately $7.4 million, which includes the above $4.0 million call premium and an approximately $3.4 million write-off of related unamortized debt issuance costs. Pursuant to the Indenture, the Company may redeem another 10% of the original principal amount of the Senior Notes prior to August 1, 2015.
	The Senior Notes rank equally in right of payment with all of the Company’s existing and future senior secured debt and pari passu with the Company and the Guarantors’ (as defined below) indebtedness that is secured by first-priority liens, including the Company’s Senior Secured Credit Facility, to the extent of the value of the collateral securing such indebtedness and ranking senior in right of payment to all of the Company’s existing and future subordinated debt. However, claims under the Senior Notes rank behind the claims of holders of debt, including interest, under the Senior Secured Credit Facility in respect of proceeds from any enforcement action with respect to the collateral or in any bankruptcy, insolvency or liquidation proceeding. The Senior Notes are unconditionally guaranteed on a senior secured basis by each of the Company’s existing and future wholly-owned subsidiaries that guarantee the Senior Secured Credit Facility (other than subsidiaries in France and Spain) (the “Guarantors”). The note guarantees rank equally in right of payment with all of the Guarantors’ existing and future senior secured debt and senior in right of payment to all of the Guarantors’ existing and future subordinated debt. The notes are structurally subordinated to all of the liabilities of each of the Company’s subsidiaries that do not guarantee the notes.
	The indenture contains covenants that, among other things, limit the ability of the Company and its restricted subsidiaries to incur additional indebtedness, pay dividends or make other distributions, subject to certain exceptions. If the Senior Notes are assigned an investment grade by the rating agencies and the Company is not in default, certain covenants will be suspended. If the ratings on the Senior Notes decline to below investment grade, the suspended covenants will be reinstated. As of December 31, 2014, the Company was in compliance with all debt covenant requirements under the indenture.
	Fees and expenses incurred in connection with the issuance of Senior Notes were approximately $42.0 million, which were capitalized and recorded in “Deferred charges and other assets” in the consolidated balance sheets, and are being amortized into “Interest expense, net” in the consolidated statements of operations over the term of the Senior Notes using the effective interest rate method. For the year ended December 31, 2014, the Company recorded $5.7 million in amortization of deferred financing fees, leaving $28.0 million of unamortized deferred financing fees related to the Senior Notes in the consolidated balance sheet as of December 31, 2014. For the year ended December 31, 2013, the Company recorded $4.9 million in amortization of deferred financing fees, leaving $37.1 million of unamortized deferred financing fees related to the Senior Notes on the balance sheet as of December 31, 2013.
	Interest expense on the Senior Notes, excluding expense relating to the amortization of deferred financing fees, was $110.6 million and $106.9 million for the years ended December 31, 2014 and 2013, respectively. Cash paid for interest on the Senior Notes was $115.4 million and $58.6 million for the years ended December 31, 2014 and 2013, respectively.
	Accounts Receivable Securitization Facility
	In August 2010, a VIE in which the Company is the primary beneficiary, Styron Receivable Funding Ltd. (“SRF”), executed an agreement for an accounts receivable securitization facility (“Accounts Receivable Securitization Facility”). The initial facility permitted borrowings by one of the Company’s subsidiaries, Styron Europe GmbH (“SE”), up to a total of $160.0 million. Under the facility, SE sells its accounts receivable from time to time to SRF. In turn, SRF may sell undivided ownership interests in such receivables to commercial paper conduits in exchange for cash. The Company has agreed to continue servicing the receivables for SRF. Upon the sale of the interests in the accounts receivable by SRF, the conduits have a first priority perfected security interest in such receivables and, as a result, the receivables will not be available to the creditors of the Company or its other subsidiaries.
	Since its inception, the Company has from time to time amended and restated the Accounts Receivable Securitization Facility. In May 2011, the facility was amended to allow for the expansion of the pool of eligible accounts receivable to include a previously excluded German subsidiary. In May 2013, the Company further amended the facility, increasing its borrowing capacity from $160.0 million to $200.0 million, extending the maturity date to May 2016 and allowing for the expansion of the pool of eligible accounts receivable to include previously excluded U.S. and The Netherlands subsidiaries. As a result of the amendment, the Company incurred $0.7 million in fees, which were capitalized in “Deferred charges and other assets” within the consolidated balance sheets and are being amortized into “Interest expense, net” within the consolidated statements of operations using the straight-line method over the remaining term.
	The Accounts Receivable Securitization Facility is subject to interest charges against the amount of outstanding borrowings as well as the amount of available, but undrawn borrowings. As a result of the amendment to our Accounts Receivable Securitization Facility in May 2013, in regards to the outstanding borrowings, fixed interest charges decreased from 3.25% plus variable commercial paper rates to 2.6% plus variable commercial paper rates. In regards to available, but undrawn commitments, fixed interest charges were decreased from 1.50% to 1.40%.
	As of December 31, 2014 and 2013, there were no amounts outstanding under the Accounts Receivable Securitization Facility, with approximately $136.1 million and $143.8 million, respectively, of accounts receivable available to support this facility, based on the pool of eligible accounts receivable. Interest expense on the Accounts Receivable Securitization Facility, excluding interest expense relating to the amortization of deferred financing fees, for the years ended December 31, 2014, 2013 and 2012 was $2.9 million, $4.2 million and $4.7 million, respectively, and was recorded in “Interest expense, net” in the consolidated statements of operations.
	Unamortized deferred financing fees related to the Accounts Receivable Securitization Facility were $1.9 million and $3.5 million as of December 31, 2014 and 2013, respectively, recorded in “Deferred charges and other assets” within the consolidated balance sheets. These charges are being amortized on a straight-line basis over the term of the facility. The Company recorded $1.4 million, $1.4 million and $1.5 million in amortization of deferred financing fees related to the Accounts Receivable Securitization Facility in “Interest expense, net” within the consolidated statements of operations for the years ended December 31, 2014, 2013 and 2012, respectively.
	Other Indebtedness
	During 2011, the Company entered into two short-term revolving facilities through our subsidiary in China that provided for approximately $28.5 million of uncommitted funds available for borrowings, subject to annual renewal. The Company did not renew one of the short-term revolving facilities, with uncommitted funds of $13.5 million, and there were no outstanding borrowings for that facility as of December 31, 2014 or 2013. The remaining facility, which provides for up to $15.0 million of uncommitted funds available for borrowings, is subject to annual renewal.
	Outstanding borrowings under the remaining revolving facility were $7.6 million and $5.1 million as of December 31, 2014 and 2013, respectively. These amounts will be due and payable within 12 months of the balance sheet date. The revolving facility is guaranteed by the Company’s holding company, Trinseo Materials Operating S.C.A. or secured by pledge of certain of the Company’s assets in China. At December 31, 2014 and 2013, the weighted average interest rate of the facility was approximately 0.1% and 0.1%, respectively.
	The Senior Secured Credit facility limits the Company’s foreign working capital facilities to an aggregate principal amount of $75.0 million and, based on the 2013 Amendment, further limits our foreign working capital facilities in certain jurisdictions in Asia, including China, to an aggregate principal amount of $25.0 million, except as otherwise permitted by the Senior Secured Credit Facility.

Foreign_Exchange_Forward_Contr

Foreign Exchange Forward Contracts	12 Months Ended
	Dec. 31, 2014
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Foreign Exchange Forward Contracts	NOTE 11—FOREIGN EXCHANGE FORWARD CONTRACTS
	Certain subsidiaries have assets and liabilities denominated in currencies other than their respective functional currencies, which creates foreign exchange risk. The Company’s principal strategy in managing its exposure to changes in foreign currency exchange rates is to naturally hedge the foreign currency-denominated liabilities on our balance sheet against corresponding assets of the same currency such that any changes in liabilities due to fluctuations in exchange rates are offset by changes in their corresponding foreign currency assets. In order to further reduce its exposure, the Company also uses foreign exchange forward contracts to economically hedge the impact of the variability in exchange rates on our assets and liabilities denominated in certain foreign currencies. These derivative contracts are not designated for hedge accounting treatment. The Company does not hold or enter into financial instruments for trading or speculative purposes.
	During 2012, the Company entered into foreign exchange forward contracts with a notional U.S. dollar equivalent amount of $82.0 million. These contracts were settled in February and May 2013 and no contracts were outstanding as of December 31, 2013. The Company recognized losses of $0.6 million and $4.8 million during the years ended December 31, 2013 and 2012, respectively, related to these contracts.
	Beginning in the third quarter of 2014, the Company began to enter into various foreign exchange forward contracts, each with an original maturity of less than three months, and has continued with this program through the end of the year. As of December 31, 2014, the Company had open foreign exchange forward contracts with a net notional U.S. dollar equivalent of $102.5 million. The following table displays the notional amounts of the most significant net foreign exchange hedge positions outstanding as of December 31, 2014.
	Buy / (Sell)	December 31,
		2014
	Euro	$	239,341
	Chinese Yuan	$	(100,086	)
	Swiss Franc	$	35,438
	Indonesian Rupiah	$	(33,020	)
	British Pound	$	(9,910	)
	Forward contracts are entered into with a limited number of counterparties, each of which allows for net settlement of all contracts through a single payment in a single currency in the event of a default on or termination of any one contract. As a result, these foreign exchange forward contracts are recorded on a net basis, by counterparty within the consolidated balance sheets.
	The fair value of open foreign exchange forward contracts amounted to $4.9 million of net unrealized losses and $0.3 million of net unrealized gains as of December 31, 2014, which were recorded in “Accounts payable” and “Accounts receivable, net of allowance”, respectively, in the consolidated balance sheets. The following tables summarize the financial assets and liabilities included in the consolidated balance sheets:
		December 31, 2014
	Description	Gross Amounts of			Gross Amounts of Offset			Net Amounts of Assets Presented
		Recognized			in the Consolidated			in the Consolidated
		Assets			Balance Sheet			Balance Sheet
	Foreign exchange forward contracts	$	2,037		$	(1,739	)	$	298
		December 31, 2014
	Description	Gross Amounts of			Gross Amounts of Offset			Net Amounts of Liabilities Presented
		Recognized			in the Consolidated			in the Consolidated
		Liabilities			Balance Sheet			Balance Sheet
	Foreign exchange forward contracts	$	6,589		$	(1,739	)	$	4,850
	The Company had no derivative assets or liabilities outstanding as of December 31, 2013.
	As these foreign exchange forward contracts are not designated for hedge accounting treatment, changes in the fair value of underlying instruments are recognized in “Other expense (income), net” in the consolidated statements of operations. The Company recorded losses from settlements and changes in the fair value of outstanding forward contracts of $28.2 million during the year ended December 31, 2014. These losses largely offset net foreign exchange transaction gains of $32.4 million during the year which resulted from the remeasurement of the Company’s foreign currency denominated assets and liabilities. The cash settlements of these forward exchange forward contracts are included within operating activities in the consolidated statements of cash flows.
	For fair value disclosures related to these foreign currency forward contracts, refer to Note 13.

Shareholders_Equity

Shareholders' Equity	12 Months Ended
	Dec. 31, 2014
Equity [Abstract]
Shareholders' Equity	NOTE 12—SHAREHOLDERS’ EQUITY
	Common Stock
	On May 8, 2012, the Company issued 5.1 million shares of common stock to the Parent with $0.01 nominal value for $22.2 million of proceeds. The proceeds from the issuance were used as equity contribution required under the terms of the Senior Secured Credit Facility in order to cure the covenant default for the period ended March 31, 2012. Also, on August 8, 2012, the Parent received an additional $140.0 million from shareholders and contributed the same amount to the Company through the issuance of 32.1 million shares of common stock with a nominal value of $0.01. The proceeds from the issuance of the common stock were used to repay a portion of the 2011 Term Loans in connection with the 2012 Amendment.
	On May 30, 2014, the Company amended its Articles of Association to effect a 1-for-436.69219 reverse split of its issued and outstanding common stock and to increase its authorized shares of common stock to 50.0 billion. Pursuant to the reverse split, every 436.69219 shares of the Company’s then issued and outstanding common stock was converted into one share of common stock. The reverse split did not change the par value of the Company’s common stock. These consolidated financial statements and accompanying footnotes have been retroactively adjusted to give effect to the reverse split.
	On June 17, 2014, the Company completed the IPO of 11,500,000 ordinary shares at a price of $19.00 per share. The number of ordinary shares at closing included 1,500,000 of shares sold pursuant to the underwriters’ over-allotment option. The Company received cash proceeds of $203.2 million from this transaction, net of underwriting discounts. These net proceeds were used by the Company for: i) the July 2014 repayment of $132.5 million in aggregate principal amount of the 8.750% Senior Notes due 2019, together with accrued and unpaid interest thereon of $5.2 million and a call premium of $4.0 million (see Note 10); ii) the payment of approximately $23.3 million in connection with the termination of the Advisory Agreement with Bain Capital (see Note 18); iii) the payment of approximately $5.1 million of advisory, accounting, legal and printing expenses directly related to the offering which were recorded as a reduction to additional paid-in capital in the consolidated balance sheets; and iv) general corporate purposes.

Fair_Value_Measurements

Fair Value Measurements	12 Months Ended
	Dec. 31, 2014
Fair Value Disclosures [Abstract]
Fair Value Measurements	NOTE 13—FAIR VALUE MEASUREMENTS
	Fair value is defined as 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. Assets and liabilities measured at fair value are classified using the following hierarchy, which is based upon the transparency of inputs to the valuation as of the measurement date.
	Level 1—Valuation is based upon quoted prices (unadjusted) for identical assets or liabilities in active markets.
	Level 2—Valuation is based upon quoted prices for similar assets and liabilities in active markets, or other inputs that are observable for the asset or liability, either directly or indirectly, for substantially the full term of the financial instrument.
	Level 3—Valuation is based upon other unobservable inputs that are significant to the fair value measurement.
	The following table summarizes the basis used to measure certain assets and liabilities at fair value on a recurring basis in the consolidated balance sheets at December 31, 2014. As discussed in Note 11, there were no open foreign exchange forward contracts as of December 31, 2013, and as such, there were no balances to be recorded at fair value at that date.
		December 31, 2014
	Assets (Liabilities) at Fair Value	Quoted Prices in		Significant Other			Significant		Total
		Active Markets for		Observable Inputs			Unobservable
		Identical Items		(Level 2)			Inputs
		(Level 1)					(Level 3)
	Foreign exchange forward contracts—Assets	$	—	$	298		$	—	$	298
	Foreign exchange forward contracts—(Liabilities)		—		(4,850	)		—		(4,850	)
	Total fair value	$	—	$	(4,552	)	$	—	$	(4,552	)
	The Company uses an income approach to value its foreign exchange forward contracts, utilizing discounted cash flow techniques, considering the terms of the contract and observable market information available as of the reporting date. Significant inputs to the valuation for foreign exchange forward contracts are obtained from broker quotations or from listed or over-the-counter market data, and are classified as Level 2 in the fair value hierarchy.
	Fair Value of Debt Instruments
	The following table presents the estimated fair value of the Company’s outstanding debt not carried at fair value as of December 31, 2014 and 2013, respectively:
		As of		As of
		December 31, 2014		December 31, 2013
	Senior Notes (Level 2)	$	1,212,045	$	1,366,406
	Total fair value	$	1,212,045	$	1,366,406
	There were no other significant financial instruments outstanding as of December 31, 2014 and December 31, 2013.

Income_Taxes

Income Taxes	12 Months Ended
	Dec. 31, 2014
Income Tax Disclosure [Abstract]
Income Taxes	NOTE 14—INCOME TAXES
	Income (loss) before income taxes earned within and outside the United States is shown below:
			Year Ended
			December 31,
			2014			2013			2012
	United States		$	17,522		$	25,228		$	49,193
	Outside of the United States			(65,135	)		(25,597	)		(1,351	)
	Income (loss) before income taxes		$	(47,613	)	$	(369	)	$	47,842
	The provision for (benefit from) income taxes is composed of:
			December 31, 2014									December 31, 2013						December 31, 2012
			Current			Deferred			Total			Current		Deferred		Total		Current		Deferred			Total
	U.S. federal		$	2,101		$	(2,536	)	$	(435	)	$	8,617	$	1,252	$	9,869	$	5,094	$	8,070		$	13,164
	U.S. state and other			295			3			298			820		70		890		229		1,174			1,403
	Non-U.S.			12,490			7,366			19,856			8,197		2,893		11,090		7,503		(4,510	)		2,993
	Total		$	14,886		$	4,833		$	19,719		$	17,634	$	4,215	$	21,849	$	12,826	$	4,734		$	17,560
	The effective tax rate on pre-tax income differs from the U.S. statutory rate due to the following:
			Year Ended December 31,
			2014			2013			2012
	Taxes at U.S. statutory rate(1)		$	(16,664	)	$	(129	)	$	16,745
	State and local income taxes			571			603			1,493
	Non U.S. statutory rates, including credits			899			(4,988	)		(5,185	)
	U.S. tax effect of foreign earnings and dividends			(2,112	)		(942	)		(2,890	)
	Unremitted earnings			(189	)		(157	)		3,087
	Change in valuation allowances			14,679			16,430			(8,780	)
	Uncertain tax positions			(2,818	)		(1,465	)		1,882
	Withholding taxes on interest and royalties			3,652			2,992			7,064
	U.S. manufacturing deduction			—			(229	)		(1,057	)
	Provision to return adjustments			260			3,814			(3,943	)
	Stock-based compensation			3,343			3,112			2,466
	Non-deductible interest			5,401			5,258			5,203
	Non-deductible other expenses			15,589	(2)		1,573			2,004
	Government subsidy income			—			(4,219	)		—
	Impact on foreign currency exchange			(2,643	)		71			291
	Other—net			(249	)		125			(820	)
	Total provision for income taxes		$	19,719		$	21,849		$	17,560
	Effective tax rate			(41	)%		(5,921	)%		37	%
	-1	The U.S. statutory rate has been used as management believes it is more meaningful to the Company.
	-2	Non-deductible other expenses in 2014 include the tax effect of fees incurred for the termination of the Latex JV Option Agreement with Dow and a portion of the fees incurred in connection with the termination of the Advisory Agreement with Bain Capital. See Note 18 for further discussion.
	Deferred income taxes reflect temporary differences between the valuation of assets and liabilities for financial and tax reporting:
			December 31,
			2014						2013
			Deferred			Deferred			Deferred			Deferred
			Tax			Tax			Tax			Tax
			Assets			Liabilities			Assets			Liabilities
	Tax loss and credit carry forwards		$	62,142		$	—		$	40,007		$	—
	Unremitted earnings			—			9,273			—			9,462
	Unconsolidated affiliates			11,761			—			12,257			—
	Other accruals and reserves			11,536			—			13,556			—
	Property, plant and equipment			—			42,715			—			45,314
	Goodwill and other intangible assets			15,791			—			23,452			—
	Deferred financing fees			6,366			—			6,973			—
	Employee benefits			41,186			—			31,858			—
				148,782			51,988			128,103			54,776
	Valuation allowance			(66,920	)		—			(50,404	)		—
	Total		$	81,862		$	51,988		$	77,699		$	54,776
	At December 31, 2014 and 2013, all undistributed earnings of foreign subsidiaries and affiliates are expected to be repatriated. Operating loss carryforwards amounted to $227.8 million in 2014 and $146.2 million in 2013. At December 31, 2014, $13.1 million of the operating loss carryforwards were subject to expiration in 2015 through 2019, and $214.7 million of the operating loss carryforwards expire in years beyond 2019 or have an indefinite carryforward period.
	The Company had valuation allowances which were related to the realization of recorded tax benefits on tax loss carryforwards, as well as other net deferred tax assets, primarily from subsidiaries in Luxembourg and Australia, of $66.9 million at December 31, 2014 and $50.4 million at December 31, 2013.
	For the years presented, a reconciliation of the beginning and ending amount of the unrecognized tax benefits is as follows:
	Balance as of December 31, 2011		$	25,431
	Increases related to current year tax positions			6,757
	Decreases related to prior year tax positions			(2,109	)
	Balance as of December 31, 2012		$	30,079
	Increases related to current year tax positions			1,225
	Decreases related to prior year tax positions			(4,405	)
Balance as of December 31, 2013		$	26,899
Increases related to current year tax positions			187
Decreases related to prior year tax positions			(6,701	)
Balance as of December 31, 2014		$	20,385
The Company recognized interest and penalties of less than $0.1 million, $0.7 million, and $0.8 million for the years ended December 31, 2014, 2013, and 2012, which was included as a component of income tax expense in the consolidated statements of operations. As of December 31, 2014 and 2013, the Company has $1.8 million and $2.0 million, respectively, accrued for interest and penalties. To the extent that the unrecognized tax benefits are recognized in the future, $16.1 million will impact the Company’s effective tax rate.
As a majority of the Company’s legal entities had no significant activity prior to or were formed in 2010, only the 2010 tax year and forward is subject to examination in the majority of jurisdictions, except for China, Hong Kong, and Indonesia where tax years between 2007 and 2009 remain subject to examination. Pursuant to the terms of the Purchase Agreement, the Company has been indemnified from and against any taxes for or with respect to any periods prior to the Acquisition.

Commitments_and_Contingencies

Commitments and Contingencies	12 Months Ended
	Dec. 31, 2014
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	NOTE 15—COMMITMENTS AND CONTINGENCIES
	Leased Property
	The Company routinely leases premises for use as sales and administrative offices, warehouses and tanks for product storage, motor vehicles, railcars, computers, office machines, and equipment under operating leases. Rental expense for these leases was $15.9 million, $16.2 million and $17.7 million during the years ended December 31, 2014, 2013 and 2012, respectively.
	Future minimum rental payments under operating leases with remaining non-cancelable terms in excess of one year are as follows:
	Year	Annual
		Commitment
	2015	$	8,040
	2016		5,510
	2017		3,159
	2018		2,780
	2019		2,778
	2020 and beyond		12,664
	Total	$	34,931
	Environmental Matters
	Accruals for environmental matters are recorded when it is probable that a liability has been incurred and the amount of the liability can be reasonably estimated, based on current law, existing technologies and other information. At December 31, 2014 and December 31, 2013, the Company had no accrued obligations for environmental remediation and restoration costs. Pursuant to the terms of the Styron sales and purchase agreement, the pre-closing environmental conditions were retained by Dow and the Company has been indemnified by Dow from and against all environmental liabilities incurred or relating to the predecessor periods. There are several properties which the Company now owns on which Dow has been conducting investigation, monitoring, or remediation to address historical contamination. Those properties include Allyn’s Point, Connecticut, Dalton, Georgia, and Livorno, Italy. There are other properties with historical contamination that are owned by Dow that the Company leases for its operations, including its facilities in Midland, Michigan, Schkopau, Germany, Terneuzen, The Netherlands, and Guaruja, Brazil. No environmental claims have been asserted or threatened against the Company, and the Company is not a potentially responsible party at any Superfund Sites.
	Inherent uncertainties exist in the Company’s potential environmental liabilities primarily due to unknown conditions, whether future claims may fall outside the scope of the indemnity, changing governmental regulations and legal standards regarding liability, and evolving technologies for handling site remediation and restoration. In connection with the Company’s existing indemnification, the possibility is considered remote that environmental remediation costs will have a material adverse impact on the consolidated financial statements.
	There were no amounts recorded in the consolidated statement of operations relating to environmental remediation for the years ended December 31, 2014, 2013, and 2012.
	Purchase Commitments
	In the normal course of business, the Company has certain raw material purchase contracts where it is required to purchase certain minimum volumes at current market prices. These commitments range from 1 to 6 years. The following table presents the fixed and determinable portion of the obligation under the Company’s purchase commitments as of December 31, 2014 (in millions):
	Year	Annual
		Commitment
	2015	$	1,299
	2016		1,292
	2017		1,421
	2018		1,214
	2019		1,239
	Thereafter		1,205
	Total	$	7,670
	In certain raw material purchase contracts, the Company has the right to purchase less than the required minimums and pay a liquidated damages fee, or, in case of a permanent plant shutdown, to terminate the contracts. In such cases, these obligations would be less than the obligations shown in the table above.
	The Company has service agreements with Dow and Bain Capital, some of which contain fixed annual fees. See Note 18 for further discussion.
	Litigation Matters
	From time to time, the Company may be subject to various legal claims and proceedings incidental to the normal conduct of business, relating to such matters as product liability, antitrust/competition, past waste disposal practices and release of chemicals into the environment. While it is impossible at this time to determine with certainty the ultimate outcome of these routine claims, the Company does not believe that the ultimate resolution of these claims will have a material adverse effect on the Company’s results of operations, financial condition or cash flow.
	Legal costs, including those legal costs expected to be incurred in connection with a loss contingency, are expensed as incurred.

Pension_Plans_and_Other_Postre

Pension Plans and Other Postretirement Benefits	12 Months Ended
	Dec. 31, 2014
Compensation and Retirement Disclosure [Abstract]
Pension Plans and Other Postretirement Benefits	NOTE 16—PENSION PLANS AND OTHER POSTRETIREMENT BENEFITS
	Defined Benefit Pension Plans
	The majority of the Company’s employees are participants in various defined benefit pension and other postretirement plans which are administered and sponsored by the Company.
	In connection with the Acquisition, the Company and Dow entered into affiliation agreements in certain jurisdictions (the “Affiliation Agreements”) allowing employees who transferred from Dow to the Company as of June 17, 2010 to remain in the Dow operated pension plans (“Dow Plans”) until the Company established its own pension plan. The Company then made the required employer contribution amounts to the Dow Plans for the Company’s employees and the related pension benefit obligations for the Company’s employees have been accumulating in the Dow Plans since the Acquisition Date. Since June 2010, the Dow Plans originally established in those jurisdictions, were gradually legally separated into the Company’s self administered and sponsored plans until the Affiliation Agreements ended on December 31, 2012.
	In Switzerland and The Netherlands, all remaining employees of the Company who were previously participants of the Dow Plans transferred to separately administered and sponsored pension plans of the Company effective January 1, 2013 (the “Successor Plans”). The benefit obligation and related plan assets in the Dow Plans belonging to the Company’s employees were transferred to the Successor Plans. As a result of the transfer, the Company recognized prior service credits and net losses of approximately $13.0 million and $1.4 million, respectively in other comprehensive income during the year ended December 31, 2013.
	Company employees who were not previously associated with the acquired pension and postretirement plans are generally not eligible for enrollment in these plans. Pension benefits are typically based on length of service and the employee’s final average compensation.
	Other Postretirement Benefits
	The Company, either through a Company benefit plan or government-mandated benefits, provides certain health care and life insurance benefits applicable primarily to Dow-heritage retired employees in Brazil, The Netherlands, and the U.S.
	In the U.S., the plan provides for health care benefits, including hospital, physicians’ services, drug and major medical expense coverage. In general, the plan applies to employees hired by Dow before January 1, 2008 and transferred to the Company in connection with the Acquisition, and who are at least 50 years old with 10 years of service. The plan allows for spouse coverage as well. If an employee was hired on or before January 1, 1993, the coverage extends past age 65. For employees hired after January 1, 1993 but before January 1, 2008, coverage ends at age 65. The Company reserves the right to modify the provisions of the plan at anytime, including the right to terminate, and does not guarantee the continuation of the plan or its provisions.
	In Brazil, the Company provides an insured medical benefit to all employees and eligible dependents under Brazil’s healthcare legislation, which grants the right to employees (and their beneficiaries) who have contributed towards the medical plan to extend medical coverage upon retirement or in case of involuntary dismissal. The extended medical plan must include the same level of coverage and other conditions offered to active employees, whereas former employees must assume 100% of the premium cost. Prior to 2014, the Company had not accrued for the postretirement benefits owed under this plan. As a result, for the year ended December 31, 2014, a $2.7 million liability was recorded, which includes an adjustment related to the original purchase price allocation from the Acquisition as a portion of this obligation was assumed from Dow. The impact of this adjustment was a $1.7 million increase to goodwill and $1.0 million of net periodic benefit costs, net of currency remeasurement gains, incurred from the date of the Acquisition through December 31, 2013. The Company does not believe these adjustments are material to the current or any prior period financial statements.
	In The Netherlands, the Company provided postretirement medical benefits to Dow-heritage employees who transferred to the Company in connection with the Acquisition. The Company ceased providing these benefits effective January 1, 2015. As a result, the Company recognized approximately $1.5 million of curtailment gain for the year ended December 31, 2014.
	Assumptions
	The weighted-average assumptions used to determine pension plan obligations and net periodic benefit costs are provided below:
			Pension Plan Obligations									Net Periodic Benefit Costs
			December 31,									December 31,
			2014			2013			2012			2014			2013			2012
	Discount rate			2.01	%		3.3	%		3.05	%		3.3	%		3.05	%		4.49	%
	Rate of increase in future compensation levels			2.71	%		2.86	%		2.69	%		2.86	%		2.69	%		2.64	%
	Expected long-term rate of return on plan assets			N/A			N/A			N/A			2.83	%		2.44	%		4.09	%
	The weighted-average assumptions used to determine other postretirement benefit (“OPEB”) obligations and net periodic benefit costs are provided below:
			OPEB Obligations									Net Periodic Benefit Costs
			December 31,									December 31,
			2014			2013			2012			2014			2013			2012
	Discount rate			6.4	%		4.72	%		3.93	%		6.69	%		3.93	%		5.08	%
	Initial health care cost trend rate			8.05	%		6.67	%		7	%		6.67	%		7	%		7.33	%
	Ultimate health care cost trend rate			5.43	%		5	%		5	%		5	%		5	%		5	%
	Year ultimate trend rate to be reached			2021			2019			2019			2019			2019			2019
	The discount rate utilized to measure the pension and other postretirement benefit plans is based on the yield of high-quality fixed income debt instruments at the measurement date. Future expected, actuarially determined cash flows of the plans are matched against a yield curve to arrive at a single discount rate for each plan.
	The expected long-term rate of return on plan assets is determined by performing a detailed analysis of key economic and market factors driving historical returns for each asset class and formulating a projected return based on factors in the current environment. Factors considered include, but are not limited to, inflation, real economic growth, interest rate yield, interest rate spreads, and other valuation measures and market metrics. The expected long-term rate of return for each asset class is then weighted based on the strategic asset allocation approved by the governing body for each plan. The historical experience with the pension fund asset performance is also considered.
	A one-percentage point change in the assumed health care cost trend rate would have had a nominal effect on both service and interest costs, but would result in an approximate $1.0 million impact to the projected benefit obligation.
	The net periodic benefit costs for the pension and other postretirement benefit plans for the years ended December 31, 2014, 2013, and 2012 were as follows:
			Defined Benefit Pension Plans									Other Postretirement Benefit Plans
			December 31,									December 31,
			2014			2013			2012			2014			2013			2012
	Net periodic benefit cost
	Service cost		$	14,097		$	13,866		$	10,054		$	1,048	(6)	$	283		$	252
	Interest cost			7,687			6,482			6,475			1,189	(6)		262			275
	Expected return on plan assets			(2,427	)		(1,710	)		(2,251	)		—			—			—
	Amortization of prior service cost (credit)			(1,002	)		(989	)		142			102			—			—
	Amortization of net (gain) loss			2,557			3,093			(630	)		(45	)(6)		—			(9	)
	Settlement and curtailment (gain) loss			1,517	(1)		2,122	(2)		(247	)		(1,507	)(3)		—			—
	Net periodic benefit cost (income)		$	22,429		$	22,864		$	13,543		$	787		$	545		$	518
	Amounts recognized in other comprehensive income (loss)
	Net loss (gain)		$	56,318		$	6,170		$	65,303		$	1,263	(6)	$	(1,354	)	$	677
	Amortization of prior service (cost) credit			1,002			989			(142	)		(102	)		—			—
	Amortization of net gain (loss)			(2,557	)		(3,093	)		630			45	(6)		—			9
	Settlement and curtailment gain (loss)			(1,517	)		(2,122	)		247			(242	)		—			—
	Prior service cost (credit)			(12,706	)(4)		(12,992	)(5)		—			—			730			—
	Total recognized in other comprehensive income (loss)			40,540			(11,048	)		66,038			964			(624	)		686
	Net periodic benefit cost (income)			22,429			22,864			13,543			787			545			518
	Total recognized in net periodic benefit cost and other comprehensive income (loss)		$	62,969		$	11,816		$	79,581		$	1,751		$	(79	)	$	1,204
	-1	This amount represents settlement losses from one of the Company’s defined benefit plans in Switzerland due to the termination of certain employees during the year, which resulted in a loss recognized in the year ended December 31, 2014 due to a charge against the unamortized net loss recorded in other comprehensive income.
	-2	This amount represents a curtailment loss from one of the Company’s defined benefit plans in Germany due to the reduction or cessation of benefit accruals for certain employees’ future services. The adjustment in the benefit obligation from the curtailment resulted in a loss recognized during the year ended December 31, 2013 due to a charge against the unamortized net loss recorded in other comprehensive income.
	-3	This amount represents a curtailment gain from the Company’s other postretirement benefit plan in The Netherlands, due to the cessation of retiree medical benefit accruals effective January 1, 2015.
	-4	This adjustment was made to the Company’s pension plan in The Netherlands to reflect the introduction of a salary cap and lower accrual rate on pension benefits as a result of tax law changes effective January 1, 2015. The impact of the change resulted in an adjustment to prior service credit in other comprehensive income as of December 31, 2014, which will be amortized to net periodic benefit cost over the estimated remaining service period of the employees.
	-5	This is primarily related to the transfer of all remaining employees who were previously participants in the Dow Plans in Switzerland and The Netherlands to Company Successor Plans effective January 1, 2013, as discussed above.
	-6	These amounts include the prior period net periodic cost and other comprehensive income components of the postretirement benefits in Brazil recognized during 2014, as discussed above.
	The changes in the pension benefit obligations and the fair value of plan assets and the funded status of all significant plans for the year ended December 31, 2014 and 2013 were as follows:
			Defined Benefit						Other Postretirement
			Pension Plans						Benefit Plans
			December 31,						December 31,
			2014			2013			2014			2013
	Change in projected benefit obligations
	Benefit obligation at beginning of period		$	237,914		$	231,437		$	6,660		$	6,666
Service cost			14,097			13,866			1,048			283
Interest cost			7,687			6,482			1,189			262
Plan participants’ contributions			2,385			1,831			—			—
Actuarial changes in assumptions and experience			72,470			(10,376	)		1,263			(1,354	)
Benefits paid			(900	)		(3,362	)		—			—
Benefit payments by employer			(1,428	)		(1,367	)		—			—
Acquisitions/Divestiture			—			(333	)		1,679	-7		—
Plan amendments			(12,706	)		(12,992	)		—			730
Curtailments			—			2,124			(1,743	)		—
Settlements			(6,783	)		(1,633	)		—			—
Other			614			4,576			—			—
Currency impact			(33,259	)		7,661			(1,019	)		73
Benefit obligation at end of period		$	280,091		$	237,914		$	9,077		$	6,660
Change in plan assets
Fair value of plan assets at beginning of period		$	81,347		$	72,350		$	—		$	—
Actual return on plan assets(8)			18,580			(12,713	)		—			—
Settlements			(6,783	)		(1,633	)		—			—
Employer contributions			9,446			17,665			—			—
Plan participants’ contributions			2,385			1,831			—			—
Benefits paid			(2,239	)		(3,609	)		—			—
Other			614			4,576			—			—
Currency impact			(10,780	)		2,880			—			—
Fair value of plan assets at end of period			92,570			81,347			—			—
Funded status at end of period		$	(187,521	)	$	(156,567	)	$	(9,077	)	$	(6,660	)
-7	The amount represents an adjustment to the original purchase price allocation from the Acquisition as a portion of the postretirement benefits obligation recorded in Brazil was assumed from Dow.
-8	The fair values of certain plan assets as of December 31, 2014 and 2013 were determined using cash surrender values provided under the insurance contracts which took effect on January 1, 2013. The resulting change in the fair value of plan assets due to the use of cash surrender values was included as “return on plan assets”.
The net amounts recognized in the balance sheet as of December 31, 2014 and 2013 were as follows:
		Defined Benefit						Other Postretirement
		Pension Plans						Benefit Plans
		December 31,						December 31,
		2014			2013			2014			2013
Net amounts recognized in the balance sheets at December 31
Current liabilities		$	(1,604	)	$	(1,599	)	$	(70	)	$	(26	)
Noncurrent liabilities			(185,917	)		(154,968	)		(9,007	)		(6,634	)
Net amounts recognized in the balance sheet		$	(187,521	)	$	(156,567	)	$	(9,077	)	$	(6,660	)
Accumulated benefit obligation at the end of the period		$	220,277		$	178,987		$	9,077		$	6,660
Pretax amounts recognized in AOCI at December 31:
Net prior service cost (credit)		$	(21,386	)	$	(9,682	)	$	628		$	730
Net gain (loss)			97,127			44,883			(266	)		(1,332	)
Total at end of period		$	75,741		$	35,201		$	362		$	(602	)
Approximately $5.7 million and $1.7 million of net loss and net prior service credit, respectively, for the defined benefit pension plans and $0.1 million of net prior service cost, respectively, for other postretirement benefit plans will be amortized from accumulated other comprehensive income (“AOCI”) to net periodic benefit cost in 2015.
The estimated future benefit payments, reflecting expected future service, as appropriate, are presented in the following table:
		2015			2016			2017			2018			2019			2020			Total
																	through
																	2024
Defined benefit pension plans		$	3,635		$	4,193		$	4,402		$	4,819		$	4,786		$	35,747		$	57,582
Other postretirement benefit plans			72			105			145			195			260			2,652			3,429
Total		$	3,707		$	4,298		$	4,547		$	5,014		$	5,046		$	38,399		$	61,011
Estimated contributions to the defined benefit pension plans in 2015 are $12.2 million.
The following information relates to pension plans with projected and accumulated benefit obligations in excess of the fair value of plan assets at December 31, 2014 and December 31, 2013:
Projected Benefit Obligation		December 31,
Exceeds the Fair Value of Plan Assets		2014			2013
Projected benefit obligations		$	280,091		$	237,914
Fair value of plan assets		$	92,570		$	81,347
Accumulated Benefit Obligation		December 31,
Exceeds the Fair Value of Plan Assets		2014			2013
Accumulated benefit obligations		$	177,496		$	152,056
Fair value of plan assets		$	44,382		$	50,004
Plan Assets
Prior to 2013, plan assets specific to the Dow Plans consisted primarily of receivables from Dow, which were based on a contractually determined proportion of Dow’s plan assets. Dow’s underlying plan assets consisted of equity and fixed income securities of U.S. and foreign issuers and insurance contracts, and may have included alternative investments such as real estate and private equity. Effective January 1, 2013, all remaining employees of the Company who were previously participating in Dow Plans were transferred to the Successor Plans. The related assets were also transferred to the Successor Plans and invested into insurance contracts that provide for guaranteed returns. As of December 31, 2014 and 2013, respectively, plan assets totaled $92.6 million and $81.3 million, consisting of investments in insurance contracts.
Investments in the pension plan insurance were valued utilizing unobservable inputs, which are contractually determined based on cash surrender values, returns, fees, and the present value of the future cash flows of the contracts.
Insurance contracts and Dow receivables (in 2013) are classified as Level 3 investments. Changes in the fair value of these level 3 investments during the years ended December 31, 2014 and 2013 are included in the “Change in plan assets” table above.
Concentration of Risk
The Company mitigates the credit risk of investments by establishing guidelines with investment managers that limit investment in any single issue or issuer to an amount that is not material to the portfolio being managed. These guidelines are monitored for compliance both by the Company and external managers. Credit risk related to derivative activity is mitigated by utilizing multiple counterparties and through collateral support agreements.
Supplemental Employee Retirement Plan
The Company established a non-qualified supplemental employee retirement plan in 2010. The net benefit costs recognized for the years ended December 31, 2014, 2013, and 2012 were $1.3 million, $2.3 million, and $2.6 million, respectively. As of December 31, 2012, the Company had a change in the plan assumptions, which resulted in an actuarial loss of approximately $2.2 million, net of tax of $1.4 million. The amount was recognized in the other comprehensive income. There were no further significant changes in plan assumptions as of December 31, 2014. Benefit obligations under this plan were $13.2 million and $12.7 million as of December 31, 2014 and 2013, respectively. As of December 31, 2014 and 2013, the amounts of net loss included in AOCI were $2.0 million and $2.9 million, respectively, with $0.8 million and $0.7 million amortized from AOCI into net periodic benefit costs during the years ended December 31, 2014 and 2013, respectively. Approximately $0.8 million is expected to be amortized from AOCI into net periodic benefit cost in 2015.
Based on the Company’s current estimates, the estimated future benefit payments under this plan, reflecting expected future service, as appropriate, are presented in the following table:
		2015			2016			2017			2018			2019			Thereafter			Total
Supplemental employee retirement plan		$	—		$	—		$	13,562		$	—		$	—		$	—		$	13,562
Defined Contribution Plans
The Company also offers defined contribution plans to eligible employees in the U.S. and in other countries, including Australia, China, Brazil, Hong Kong, Korea, The Netherlands, Taiwan and the United Kingdom. The defined contribution plans are comprised of a non-discretionary elective matching contribution component as well as a discretionary non-elective contribution component. Employees participate in the non-discretionary component by contributing a portion of their eligible compensation to the plan, which is partially matched by the Company. Non-elective contributions are made at the discretion of the Company and are based on a combination of eligible employee compensation and performance award targets. For the years ended December 31, 2014, 2013, and 2012, respectively, the Company contributed $6.8 million, $6.3 million, and $7.0 million to the defined contribution plans.

StockBased_Compensation

Stock-Based Compensation	12 Months Ended
	Dec. 31, 2014
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Stock-Based Compensation	NOTE 17—STOCK-BASED COMPENSATION
	Restricted Stock Awards issued by the Parent
	On June 17, 2010, the Parent authorized the issuance of up to 750,000 shares in time-based and performance-based restricted stock to certain key members of management. Any related compensation associated with these awards is allocated to the Company from the Parent. With the adoption of the Company’s 2014 Omnibus Incentive Plan (see discussion below), no further restricted stock awards will be issued by the Parent on behalf of the Company.
	Time-based Restricted Stock Awards
	The time-based restricted stock awards issued by the Parent contain a service-based condition that requires continued employment with the Company. Generally, these awards vest over three to five years of service, with a portion (20% to 40%) cliff vesting after the first one or two years. The remaining portion of the awards vest ratably over the subsequent service period, subject to the participant’s continued employment with the Company, and vest automatically upon a change in control of the Company, excluding a change in control related to an IPO. Should a participant’s termination occur within a defined timeframe due to death or permanent disability, a termination of the participant by the Company or one of its subsidiaries without cause, or the participant’s voluntary resignation for good reason, the portion of awards that are subject to time-based vesting that would have vested on the next regular vesting date will accelerate and vest on a pro rata basis, based on the number of full months between the last regular vesting date and the termination date.
	The Parent has a call right that gives it the option, but not the obligation, to repurchase vested stock at the then current fair value upon an employee’s termination, or at cost in certain circumstances. During the year-ended December 31, 2013, as the result of certain employee terminations, the Parent repurchased a total of 3,372 previously vested time-based restricted stock awards at cost, resulting in a $0.9 million favorable adjustment to stock-based compensation expense. No such events occurred in 2014 or 2012.
	Total compensation expense for time-based restricted stock awards was $7.0 million, $8.3 million, and $4.2 million for the years ended December 31, 2014, 2013, and 2012, respectively. Compensation expense recognized for the year ended December 31, 2012 includes certain adjustments, which resulted in a reduction of expense of approximately $2.5 million. The adjustments relate to the correction of prior period grant date fair values of time-based and performance-based restricted stock awards and the correction of prior period grant service based stock award vesting periods. The Company does not believe these adjustments were material to the 2012 or previous period financial statements.
	As of December 31, 2014, there was $4.9 million of total unrecognized compensation cost related to time-based restricted stock awards, which is expected to be recognized over a weighted-average period of 2.5 years.
	The following table summarizes the activity in the Parent’s time-based restricted stock awards during the year ended December 31, 2014:
	Time-based restricted stock		Shares			Weighted-Average
						Grant Date
						Fair Value per Share
	Unvested, December 31, 2013			131,190		$	164.97
	Granted			—			—
	Vested			(66,143	)		163.03
	Forfeited			(2,499	)		135.21
	Unvested, December 31, 2014			62,548		$	172.64
	The following table summarizes the weighted-average grant date fair value per share of time-based restricted stock awards granted during the years ended December 31, 2014, 2013, and 2012, as well as the total fair value of awards vested during those periods:
			Time-Based Restricted Stock
			Weighted-Average Grant Date			Total Fair Value
			Fair Value per Share			of Awards Vested
			of Grants during Period			during Period
	Year Ended December 31, 2014			N/A	(1)	$	10,783
	Year Ended December 31, 2013		$	155.4		$	6,795
	Year Ended December 31, 2012		$	204.32		$	9,100
		-1	There were no grants of time-based restricted stock awards by the Parent during the year-ended December 31, 2014.
	Modified Time-based Restricted Stock Awards
	In periods prior to June 2014, the performance-based restricted stock awards contained provisions wherein vesting was subject to the full satisfaction of both time and performance vesting criterion. The performance component of the awards could only be satisfied if certain targets were achieved based on various returns realized by the Company’s shareholders on a change in control or an IPO. The time vesting requirements for the performance-based restricted stock awards generally vested in the same manner as the related time-based award. Prior to the Company’s IPO in June 2014, the Company had not recorded any compensation expense related to these awards as the likelihood of achieving the existing performance condition of a change in control or IPO was not deemed to be probable.
	On June 10, 2014, prior to the completion of the Company’s IPO, the Parent entered into agreements to modify the outstanding performance-based restricted stock awards held by the Company’s employees to remove the performance-based vesting condition associated with such awards related to the achievement of certain investment returns (while maintaining the requirement for a change in control or IPO). This modification also changed the time-based vesting requirement associated with such shares to provide that any shares which would have satisfied the time-based vesting condition previously applicable to such shares on or prior to June 30, 2017 will instead vest on June 30, 2017, subject to the holder remaining continuously employed by the Company through such date. Any such shares that are subject to a time-based vesting condition beyond June 30, 2017 will remain subject to the time-based vesting condition previously applicable to such awards. Henceforth, these awards will be described as the Company’s modified time-based restricted stock awards.
	On June 17, 2014, with the completion of the Company’s IPO, the remaining performance condition associated with these modified time-based restricted stock awards was achieved. As a result, the Company began recognizing compensation expense on these awards based on the vesting described above. Total compensation expense recognized for modified time-based restricted stock awards was $2.5 million for the year ended December 31, 2014.
	As of December 31, 2014, there was $9.3 million of total unrecognized compensation cost related to modified time-based restricted stock awards, which is expected to be recognized over a weighted-average period of 2.6 years.
	The following table summarizes the activity in the Parent’s modified time-based restricted stock awards during the year ended December 31, 2014:
	Modified time-based restricted stock		Shares			Weighted-Average
						Grant Date
						Fair Value per Share
	Unvested, December 31, 2013			118,123		$	131.83
	Granted*			—			—
	Vested*			—			—
	Forfeited*			(10,068	)		97.45
	Unvested, June 10, 2014*			108,055		$	115.3
	Granted			—			—
	Vested			(775	)		115.3
	Forfeited			—			—
	Unvested, December 31, 2014			107,280		$	115.3
	*	Represents activity and balances during the current year prior to the June 2014 modification discussed above. Note that the fair value of all unvested awards was adjusted to reflect the updated fair value per share upon modification.
	The following table summarizes the weighted-average grant date fair value per share of modified time-based restricted stock awards (named performance-based awards, prior to June 2014 modification) granted during the years ended December 31, 2014, 2013, and 2012, as well as the total fair value of awards vested during those periods:
			Modified Time-Based Restricted Stock
			Weighted-Average Grant Date			Total Fair Value
			Fair Value per Share			of Awards Vested
			of Grants during Period			during Period
	Year Ended December 31, 2014			N/A	(1)	$	—
	Year Ended December 31, 2013		$	114.5		$	—
	Year Ended December 31, 2012		$	170.43		$	—
	-1	There were no grants of performance-based restricted stock awards (or modified time-based restricted stock awards) by the Parent during the year-ended December 31, 2014.
	Fair Value Assumptions for Restricted Stock Award Grants
	There were no grants by the Parent of time-based, performance-based, or modified time-based restricted stock awards during the year-ended December 31, 2014. However, as a result of the above-described June 2014 modification, the fair value of all modified time-based restricted stock awards was calculated as of the modification date. The fair values of time-based, modified time-based, and performance-based restricted stock awards (in prior years) were estimated on the date of grant using a combination of a call option and digital option model that uses assumptions about expected volatility, risk-free interest rates, the expected term, and dividend yield. In prior year valuations, the expected term for performance-based awards considered management’s probability-weighted estimate of the expected time until a change in control or IPO as well as the time until a performance condition would be met. The expected term for time-based and modified time-based awards considered both the service conditions of vesting of the awards, as well as management’s probability-weighted estimate of the expected liquidity horizon. The expected volatilities were based on a combination of implied and historical volatilities of a peer group of companies, as the Company was a non-publicly traded company prior to the IPO. The risk-free rate is based on the U.S. Treasury yield curve in effect at the time of grant for periods corresponding with the expected life of the awards. The expected dividend yield was based on an assumption that no dividends are expected to be approved in the near future.
	The following are the weighted average assumptions used for grants during the years ended December 31, 2013, and 2012, respectively, and for valuation of the modified time-based awards in June 2014:
			Year Ended December 31,
			2014			2013			2012
	Dividend yield			0	%		0	%		0	%
	Expected volatility			65	%		73.25	%		75.71	%
	Risk-free interest rate			1.54	%		0.52	%		0.58	%
	Expected term (in years) for performance-based shares			N/A			3.85			3.85
	Expected term (in years) for time-based and modified time-based shares			4.5			9.21			10.32
2014 Omnibus Incentive Plan
In connection with the IPO, the Company’s board of directors approved the Trinseo S.A. 2014 Omnibus Incentive Plan (“2014 Omnibus Plan”), adopted on May 28, 2014, under which the maximum number of shares of common stock that may be delivered upon satisfaction of awards granted under such plan is 4.5 million shares. Following the IPO, all equity-based awards granted by the Company will be granted under the 2014 Omnibus Plan. The 2014 Omnibus Plan provides for awards of stock options, share appreciation rights, restricted stock, unrestricted stock, stock units, performance awards, cash awards and other awards convertible into or otherwise based on shares of the Company’s common stock.
In connection with the IPO, two of the Company’s newly appointed independent directors (Messrs. Cote and De Leener) each received a grant of 4,736 restricted stock units, respectively, under the 2014 Omnibus Plan each with a grant date fair value of $0.1 million. These awards will vest in full on the first anniversary of the date of grant, subject to the director’s continued service as a member of the Company’s board through such date. Total compensation expense for these restricted stock units was $0.1 million for the year ended December 31, 2014.
Shareholder distribution and share redemption
On February 3, 2011, the Company used a portion of the proceeds from the 2011 Term Loans to pay a distribution to the shareholders of the Parent, including investment funds advised or managed by Bain Capital, Dow and certain executives, through the redemption of certain classes of the Parent’s shares. The shares redeemed included a portion of the outstanding unvested time-based and performance-based restricted stock awards as well as a portion of the issued and outstanding restricted stock.
For certain employees, a portion or all of this distribution attributable to unvested time-based and performance-based restricted awards was withheld and put in escrow, to be paid out two years from the employees’ date of hire, subject to the participant’s continued employment with the Company. The amounts held in escrow vest ratably over the two year period of time after the employee’s hire date. At the date of the redemption, the Parent recorded a liability to reflect the amount held in escrow each employee had already vested in as of the date of the redemption. Compensation expense on the unvested amount of the distribution withheld in escrow was recognized ratably over the remaining service period from the time of the redemption. Total compensation expense for these liability awards was less than $0.1 million, and $0.9 million for the years ended December 31, 2013, and 2012, respectively. As of December 31, 2013, there was no remaining unrecognized compensation cost related to these liability awards, and therefore, no amounts were recognized for the year ended December 31, 2014.
Management Retention Awards
During the year ended December 31, 2012, the Parent agreed to retention awards with certain officers. These awards generally vest over one to four years, and are payable upon vesting subject to the participant’s continued employment with the Company on the vesting date. Compensation expense related to these retention awards is equivalent to the value of the award, and is being recognized ratably over the applicable service period. Total compensation expense for these retention awards was $0.9 million, $1.4 million, and $2.3 million for the years ended December 31, 2014, 2013, and 2012, respectively. As of December 31, 2014, there was $0.4 million in unrecognized compensation cost related to these retention awards, which is expected to be recognized over a period of 1.1 years.
Parent Company Restricted Stock Sales
During the year ended December 31, 2013, the Parent sold 779 shares of non-transferable restricted stock to certain employees, all of which were sold at a purchase price less than the fair value of the Parent’s common stock. As a result, during the year ended December 31, 2013, the Company recorded compensation expense of approximately $0.2 million related to these restricted stock sales. There were no restricted stock sales during the years ended December 31, 2014 and 2012. The restricted stock may not be transferred without the Parent’s consent except for a sale to the Parent or its investors in connection with a termination or on an IPO or other liquidation event.
Summary of Stock-based Compensation Expense
The amount of stock-based compensation expense recorded within “Selling, general and administrative expenses” in the consolidated statements of operations for the years ended December 31, 2014, 2013, and 2012, respectively, was as follows:
		Year Ended December 31,
		2014			2013			2012
Time-based Restricted Stock Awards		$	7,037		$	8,346		$	4,192
Modified Time-based Restricted Stock Awards			2,469			—			—
Restricted Stock Units- under 2014 Omnibus Plan			100			—			—
Liability awards			50			46			861
Management Retention Awards			896			1,416			2,275
Parent Company Restricted Stock Sales			—			171			—
Total stock-based compensation expense		$	10,552		$	9,979		$	7,328

Related_Party_and_Dow_Transact

Related Party and Dow Transactions	12 Months Ended
	Dec. 31, 2014
Related Party Transactions [Abstract]
Related Party and Dow Transactions	NOTE 18—RELATED PARTY AND DOW TRANSACTIONS
	In conjunction with the Acquisition, the Company entered into certain agreements with Dow, including a five-year Master Outsourcing Services Agreement (“MOSA”) and certain Site and Operating Service Agreements. The MOSA provides for ongoing services from Dow in areas such as information technology, human resources, finance, environmental health and safety, training, supply chain and purchasing. Effective June 1, 2013, the Company entered into a Second Amended and Restated Master Outsourcing Services Agreement (“SAR MOSA”). The SAR MOSA replaces, modifies and extends the earlier MOSA, extending the term through December 31, 2020 and which automatically renews for two year periods unless either party provides six months’ notice of non-renewal to the other party. The services provided pursuant to the SAR MOSA generally are priced per function, and the Company has the ability to terminate the services or any portion thereof, for convenience any time after June 1, 2015, subject to payment of termination charges. Services which are “highly integrated” follow a different process for evaluation and termination. In addition, either party may terminate for cause, which includes a bankruptcy, liquidation or similar proceeding by the other party, for material breach which is not cured, or by Dow in the event of our failure to pay for the services thereunder. In the event of a change of control, as defined in the agreement, Dow has the right to terminate the SAR MOSA. As of December 31, 2014, the estimated minimum contractual obligations under the SAR MOSA, excluding the impacts of inflation, are $20.0 million through June 2015 and $32.0 million thereafter.
	In addition, the Company entered into certain Site and Operating Service Agreements. Under the Site Services Agreements (“SSAs”), Dow provides the Company utilities and other site services for Company-owned plants. Under the Operating Services agreements the Company provides services to Dow and receives payments for the operation of a Dow-owned plant. Similar to the above SAR MOSA, effective June 1, 2013, the Company entered into Second Amended and Restated Site Services Agreements (“SAR SSAs”). The SAR SSAs replace, modify and extend the original SSAs. These agreements generally have 25-year terms, with options to renew. These agreements may be terminated at any time by agreement of the parties, or, by either party, for cause, including a bankruptcy, liquidation or similar proceeding by the other party, or under certain circumstances for a material breach which is not cured. In addition, the Company may terminate for convenience any services that Dow has agreed to provide that are identified in any site services agreement as “terminable” with 12 months prior notice to Dow, dependent upon whether the service is highly integrated into Dow operations. Highly integrated services are agreed to be nonterminable. With respect to “nonterminable” services that Dow has agreed to provide to the Company, such as electricity and steam, the Company generally cannot terminate such services prior to the termination date unless the Company experiences a production unit shut down for which Dow is provided with 15-months prior notice, or upon payment of a shutdown fee. Upon expiration or termination, the Company would be obligated to pay a monthly fee to Dow, which obligation extends for a period of 45 (in the case of expiration) to 60 months (in the case of termination) following the respective event of each site services agreement. The agreements under which Dow receives services from the Company may be terminated under the same circumstances and conditions.
	For the years ended December 31, 2014, 2013 and 2012, the Company incurred a total of $282.5 million, $303.2 million and $317.6 million in expenses under these agreements, respectively, including $233.7 million, $235.1 million and $214.5 million, for both the variable and fixed cost components of the Site Service Agreements, respectively, and $48.8 million, $68.1 million and $103.1 million covering all other agreements, respectively.
	In connection with the Acquisition, certain of the Company’s affiliates entered into a latex joint venture option agreement (the “Latex JV Option Agreement”) with Dow, pursuant to which Dow was granted an irrevocable option to purchase 50% of the issued and outstanding interests in a joint venture to be formed by Dow and the Company’s affiliates with respect to the SB Latex business in Asia, Latin America, the Middle East, Africa, Eastern Europe, Russia and India. On May 30, 2014, the Company’s affiliates entered into an agreement with Dow to terminate the Latex JV Option Agreement, Dow’s rights to the option, and all other obligations thereunder, in exchange for a termination payment of $32.5 million. This termination payment was made on May 30, 2014, and the termination of the Latex JV Option Agreement became effective as of such date. This termination payment was recorded as an expense within “Other expense (income), net” in the consolidated statements of operations for the year ended December 31, 2014.
	In addition, the Company has transactions in the normal course of business with Dow and its affiliates. For the years ended December 31, 2014, 2013, and 2012, sales to Dow and its affiliated companies were approximately $343.8 million, $294.7 million and $311.4 million, respectively. For the years ended December 31, 2014, 2013, and 2012, purchases (including MOSA and SSA services) from Dow and its affiliated companies were approximately $2,196.0 million, $2,336.5 million and $2,654.7 million, respectively.
	As of December 31, 2014 and 2013, receivables from Dow and its affiliated companies were approximately $18.7 million and $31.6 million, respectively, and are included in “Accounts receivable, net of allowance” in the consolidated balance sheets. As of December 31, 2014 and 2013, payables to Dow and its affiliated companies were approximately $156.9 million and $218.9 million, respectively, and are included in “Accounts payable” in the consolidated balance sheet.
	In connection with the Acquisition, the Company entered into the Advisory Agreement wherein Bain Capital provides management and consulting services and financial and other advisory services to the Company. The Advisory Agreement terminated upon consummation of the Company’s IPO in June 2014 and pursuant to the terms of the Advisory Agreement, the Company paid $23.3 million of termination fees representing acceleration of the advisory fees for the remainder of the original term. The termination fee was paid in June 2014 using the proceeds from the IPO, and was recorded as an expense within “Selling, general and administrative expenses” in the consolidated statement of operations for the year ended December 31, 2014. Bain Capital will continue to provide an immaterial level of ad hoc advisory services for the Company going forward. In conjunction with the above, we paid Bain Capital fees (including out-of-pocket expenses) of $2.4 million, $4.7 million, and $4.6 million for the years ended December 31, 2014, 2013, and 2012, respectively (excluding the termination fees noted above).
	Bain Capital also provides advice pursuant to a 10-year Transaction Services Agreement with fees payable equaling 1% of the transaction value of each financing, acquisition or similar transaction. In connection with the IPO, Bain Capital received $2.2 million of transaction fees, which were recorded within “Additional paid-in-capital” in the consolidated balance sheets as of December 31, 2014 (see Note 12). Bain Capital also received fees of approximately $13.9 million related to the issuance of the Senior Notes and the amendment to the Senior Secured Credit Facility in January 2013, which were included in the financing fees capitalized and included in “Deferred charges and other assets” in the consolidated balance sheet (see Note 10 for further discussion).
	Total fees incurred from Bain Capital for these management and transaction advisory services, including fees related to the Acquisition and the Company’s financing arrangements, were $27.9 million, $18.6 million, and $4.6 million, respectively, for the years ended December 31, 2014, 2013, and 2012.

Segments

Segments	12 Months Ended
	Dec. 31, 2014
Segment Reporting [Abstract]
Segments	NOTE 19—SEGMENTS
	The Company operates four segments under two principal business units. The Emulsion Polymers business unit includes a Latex segment and a Synthetic Rubber segment. The Plastics business unit includes a Styrenics segment and an Engineered Polymers segment.
	The Latex segment produces SB latex primarily for coated paper and packaging board, carpet and artificial turf backings, as well as a number of performance latex applications. The Synthetic Rubber segment produces synthetic rubber products used predominantly in tires, with additional applications in polymer modification and technical rubber goods, including conveyer and fan belts, hoses, seals and gaskets. The Styrenics and Engineered Polymers segments offer complementary plastics products with formulations developed for durable applications, such as consumer electronics, automotive and construction. Through these two segments, the Company provides a broad set of plastics product solutions to its customers.
			Emulsion Polymers						Plastics
	For the year ended		Latex			Synthetic			Styrenics			Engineered			Corporate		Total
						Rubber						Polymers			Unallocated
	December 31, 2014
	Sales to external customers		$	1,261,137		$	633,983		$	2,197,067		$	1,035,774		$	—	$	5,127,961
	Equity in earnings (losses) of unconsolidated affiliates			—			—			50,269			(2,520	)		—		47,749
	EBITDA(1)			93,962			136,985			87,496			5,754
	Investment in unconsolidated affiliates			—			—			133,533			34,125			—		167,658
	Depreciation and amortization			26,954			32,900			29,456			10,351			4,045		103,706
	December 31, 2013
	Sales to external customers		$	1,341,424		$	622,059		$	2,305,434		$	1,038,497		$	—	$	5,307,414
	Equity in earnings (losses) of unconsolidated affiliates			—			—			39,447			(309	)		—		39,138
	EBITDA(1)			95,398			113,459			160,724			(9,058	)
	Investment in unconsolidated affiliates			—			—			118,263			37,624			—		155,887
	Depreciation and amortization			26,092			28,937			28,956			7,375			3,836		95,196
	December 31, 2012
	Sales to external customers		$	1,545,064		$	701,962		$	2,149,202		$	1,055,681		$	—	$	5,451,909
	Equity in earnings of unconsolidated affiliates			—			—			27,026			114			—		27,140
	EBITDA(1)			125,473			111,051			82,947			31,503
	Investment in unconsolidated affiliates			—			—			101,316			38,988			—		140,304
	Depreciation and amortization			27,037			18,080			30,618			6,936			2,933		85,604
	-1	Reconciliation of EBITDA to net income (loss) is as follows:
			Year Ended December 31,
			2014			2013			2012
	Total segment EBITDA		$	324,197		$	360,523		$	350,974
	Corporate unallocated			(143,181	)		(133,658	)		(107,557	)
	Less: Interest expense, net			124,923			132,038			109,971
	Less: Provision for income taxes			19,719			21,849			17,560
	Less: Depreciation and amortization			103,706			95,196			85,604
	Net income (loss)		$	(67,332	)	$	(22,218	)	$	30,282
	Corporate unallocated includes corporate overhead costs, loss on extinguishment of long-term debt, and certain other income and expenses.
	The primary measure of segment operating performance is EBITDA, which is defined as net income (loss) before interest, income taxes, depreciation and amortization. EBITDA is a key metric that is used by management to evaluate business performance in comparison to budgets, forecasts, and prior year financial results, providing a measure that management believes reflects the Company’s core operating performance. EBITDA is useful for analytical purposes; however, it should not be considered an alternative to the Company’s reported GAAP results, as there are limitations in using such financial measures. Other companies in the industry may define EBITDA differently than the Company, and as a result, it may be difficult to use EBITDA, or similarly-named financial measures, that other companies may use to compare the performance of those companies to the Company’s performance.
	Asset and capital expenditure information is not accounted for at the segment level and consequently is not reviewed or included with the Company’s internal management reporting. Therefore, the Company has not disclosed asset and capital expenditure information for each reportable segment.
	The Company operates 34 manufacturing plants (which include a total of 81 production units) at 26 sites in 14 countries, inclusive of joint ventures and contract manufacturers. Sales are attributed to geographic areas based on the location where sales originated; long-lived assets are attributed to geographic areas based on asset location.
			Year Ended December 31,
			2014			2013			2012
	United States
	Sales to external customers		$	663,425		$	665,801		$	683,570
	Long-lived assets			65,329			73,932			84,992
	Europe
	Sales to external customers		$	3,066,581		$	3,186,659		$	3,324,064
	Long-lived assets			383,311			431,494			449,834
	Asia-Pacific
	Sales to external customers		$	1,196,163		$	1,214,093		$	1,200,747
	Long-lived assets			99,654			92,691			91,885
	Rest of World
	Sales to external customers		$	201,792		$	240,861		$	243,528
	Long-lived assets			8,403			8,310			6,561
	Total
	Sales to external customers(1)		$	5,127,961		$	5,307,414		$	5,451,909
	Long-lived assets(2)(3)			556,697			606,427			633,272
	-1	Sales to external customers in China represented approximately 8%, 8% and 8% of the total for the years ended December 31, 2014, 2013, and 2012, respectively. Sales to external customers in Germany represented approximately 12%, 11% and 10% of the total for the years ended December 31, 2014, 2013, and 2012, respectively. Sales to external customers in Hong Kong represented approximately 11%, 10% and 9% of the total for the years ended December 31, 2014, 2013, and 2012, respectively.
	-2	Long-lived assets in China represented approximately 6%, 4%, and 4% of the total for the years ended December 31, 2014, 2013, and 2012, respectively. Long-lived assets in Germany represented approximately 43%, 44%, and 45% of the total for the years ended December 31, 2014, 2013, and 2012, respectively. Long-lived assets in The Netherlands represented approximately 13%, 13%, and 13% of the total for the years ended December 31, 2014, 2013, and 2012, respectively.
	-3	Long-lived assets consist of property, plant and equipment, net.
	In October 2014, the Company announced that effective January 1, 2015, it will realign its business divisions, creating two new business groups called Performance Materials and Basic Plastics and Feedstocks. This new alignment will better reflect the nature of our businesses, grouping together businesses with similar strategies and aspirations, with the intention of accelerating growth in Performance Materials and optimizing profitability and cash generation in Basic Plastics and Feedstocks. The Performance Materials division will include the following reporting segments: Rubber, Latex and Performance Plastics (consisting of the Automotive and Consumer Essential Markets businesses). The Basic Plastics and Feedstocks division will also represent a separate segment for reporting purposes and will include the following businesses: Styrenic Polymers (Polystyrene, ABS, SAN), Polycarbonate, and Styrene Monomer.

Restructuring

Restructuring	12 Months Ended
	Dec. 31, 2014
Restructuring and Related Activities [Abstract]
Restructuring	NOTE 20—RESTRUCTURING
	2012 Global Restructuring Program
	In February 2012, the Company announced an organizational restructuring program that included changes to many employees’ roles and elimination of approximately 90 roles globally. This restructuring was driven by the business organization, as well as the need to further reduce costs due to the challenging economic outlook in 2012. As a result of this and other employee separations during 2012, the Company recorded special termination benefit charges of approximately $7.5 million for the year ended December 31, 2012 within Corporate unallocated. These restructuring charges were included in “Selling, general and administrative expenses” in the consolidated statements of operations. No additional charges have been incurred in conjunction with these initiatives, and there are no amounts accrued as of December 31, 2014 and 2013.
	Restructuring in Engineered Polymers Business
	During the second quarter of 2014, the Company announced a restructuring within its Engineered Polymers business to exit the commodity market for polycarbonate in North America and to terminate existing arrangements with Dow regarding manufacturing services for the Company at Dow’s Freeport, Texas facility (the “Freeport facility”). The Company also entered into a new long-term supply contract with a third party to supply polycarbonate in North America. These revised arrangements became operational in the fourth quarter of 2014. In addition, the Company has executed revised supply contracts for certain raw materials that are processed at its polycarbonate manufacturing facility in Stade, Germany, which took effect January 1, 2015. These revised agreements are expected to facilitate improvements in future results of operations for the Engineered Polymers segment. Production at the Freeport facility ceased as of September 30, 2014, and decommissioning and demolition began thereafter and is expected to be completed in 2015.
	For the year ended December 31, 2014, the Company recorded restructuring charges of $3.5 million relating to the accelerated depreciation of the related assets at the Freeport facility and $6.6 million in charges for the reimbursement of decommissioning and demolition costs incurred by Dow (of which $4.2 million remained accrued within “Accounts payable” on the consolidated balance sheet as of December 31, 2014). These charges were included in “Selling, general and administrative expenses” in the consolidated statements of operations, and were allocated entirely to the Engineered Polymers segment. In accordance with the relevant termination agreement, these reimbursement costs to Dow are not to exceed $7.0 million in total.
	Altona Plant Shutdown
	In July 2013, the Company’s board of directors approved the plan to close the Company’s latex manufacturing facility in Altona, Australia. This restructuring plan was a strategic business decision to improve the results of the overall Latex segment. The facility manufactured SB latex used in the carpet and paper markets. Production at the facility ceased in the third quarter of 2013, followed by decommissioning, with demolition throughout most of 2014.
	As a result of the plant closure, the Company recorded restructuring charges of $10.8 million for the year ended December 31, 2013. These charges consisted of property, plant and equipment and other asset impairment charges, employee termination benefit charges, contract termination charges, and incurred decommissioning charges, of which approximately $4.8 million remained accrued on the Company’s consolidated balance sheet as of December 31, 2013.
	For the year ended December 31, 2014, the Company recorded additional net restructuring charges of approximately $2.8 million, related primarily to incremental employee termination benefit charges, contract termination charges, and decommissioning costs. These charges were included in “Selling, general and administrative expenses” in the consolidated statements of operations, and were allocated entirely to the Latex segment. Of the remaining balance at December 31, 2014, $1.2 million is recorded in “Accrued expenses and other current liabilities” and $0.9 million is recorded in “Other noncurrent liabilities” in the consolidated balance sheet.
	The following tables provide a rollforward of the liability balances associated with the Altona plant shutdown for the years ended December 31, 2013 and 2014, respectively:
			Balance at		Expenses		Deductions(1)			Balance at
			December 31, 2013							December 31, 2014
	Employee termination benefit charges		$	1,408	$	302	$	(1,710	)	$	—
	Contract termination charges			3,388		1,409		(2,669	)		2,128
	Other(2)			26		1,277		(1,303	)		—
	Total		$	4,822	$	2,988	$	(5,682	)	$	2,128
			Balance at		Expenses		Deductions(1)			Balance at
			December 31, 2012							December 31, 2013
	Employee termination benefit charges		$	—	$	2,589	$	(1,181	)	$	1,408
	Contract termination charges			—		3,934		(546	)		3,388
	Other(2)			—		215		(189	)		26
	Total		$	—	$	6,738	$	(1,916	)	$	4,822
	-1	Includes primarily payments made against the existing accrual, as well as immaterial impacts of foreign currency remeasurement.
	-2	Includes demolition and decommissioning charges incurred, primarily related to labor and third party service costs.

Accumulated_Other_Comprehensiv

Accumulated Other Comprehensive Income (Loss)	12 Months Ended
	Dec. 31, 2014
Equity [Abstract]
Accumulated Other Comprehensive Income (Loss)	NOTE 21—ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS)
	The components of accumulated other comprehensive income (loss), net of income taxes, consisted of:
		Currency			Employee			Total
		Translation			Benefits,
		Adjustment, Net			Net
	Balance at December 31, 2011	$	38,935		$	14,253		$	53,188
	Other comprehensive income (loss)		23,872			(52,487	)		(28,615	)
	Balance at December 31, 2012		62,807			(38,234	)		24,573
	Other comprehensive income (loss)		53,339			10,466			63,805
	Balance at December 31, 2013		116,146			(27,768	)		88,378
	Other comprehensive income (loss)		(133,901	)		(29,694	)		(163,595	)
	Balance at December 31, 2014	$	(17,755	)	$	(57,462	)	$	(75,217	)

Earnings_Loss_Per_Share

Earnings (Loss) Per Share	12 Months Ended
	Dec. 31, 2014
Earnings Per Share [Abstract]
Earnings (Loss) Per Share	NOTE 22—EARNINGS (LOSS) PER SHARE
	Basic earnings (loss) per share (“basic EPS”) is computed by dividing net income (loss) available to common shareholders by the weighted average number of the Company’s common shares outstanding for the applicable period. Diluted earnings (loss) per share (“diluted EPS”) is calculated using net income (loss) available to common shareholders divided by diluted weighted-average shares of common shares outstanding during each period, which includes unvested restricted shares. Diluted EPS considers the impact of potentially dilutive securities except in periods in which there is a loss because the inclusion of the potential common shares would have an anti-dilutive effect.
	The following table presents EPS and diluted EPS for the years ended December 31, 2014, 2013 and 2012, respectively. These balances have been retroactively adjusted to give effect to the Company’s 1-for-436.69219 reverse stock split declared effective on May 30, 2014, discussed in Note 12.
			Year Ended
			December 31,
	(in thousands, except per share data)		2014			2013			2012
	Earnings (losses):
	Net income (loss) available to common shareholders		$	(67,332	)	$	(22,218	)	$	30,282
	Shares:
	Weighted average common shares outstanding			43,476			37,270			16,123
	Dilutive effect of restricted stock units*			—			—			—
	Diluted weighted average shares outstanding			43,476			37,270			16,123
	Income (loss) per share:
	Income (loss) per share—basic and diluted		$	(1.55	)	$	(0.60	)	$	1.88
	*	Refer to Note 17 for discussion of restricted stock units granted in June 2014 to certain Company directors. As net loss was reported for the year ended December 31, 2014, potentially dilutive awards have not been included within the calculation of diluted EPS, as they would have an anti-dilutive effect.

Selected_Quarterly_Financial_D

Selected Quarterly Financial Data	12 Months Ended
	Dec. 31, 2014
Quarterly Financial Information Disclosure [Abstract]
Selected Quarterly Financial Data	NOTE 23—SELECTED QUARTERLY FINANCIAL DATA (Unaudited)
			First			Second			Third			Fourth
			Quarter			Quarter			Quarter			Quarter
	2014
	Net sales		$	1,359,132		$	1,340,935		$	1,305,493		$	1,122,401
	Gross profit			98,629			92,410			68,236			38,046
	Equity in earnings of unconsolidated affiliates			14,950			5,378			9,267			18,154
	Operating Income			63,549			23,580	(1)		29,390			(4,035	)
	Income (loss) before income taxes			29,836			(39,171	)(1)		(6,460	)(2)		(31,818	)
	Net income (loss)			17,086			(44,621	)(1)		(10,110	)(2)		(29,687	)
	Income (loss) per share- basic and diluted		$	0.46		$	(1.15	)(1)	$	(0.21	)(2)	$	(0.61	)
	2013
	Net sales		$	1,391,585		$	1,361,759		$	1,308,959		$	1,245,111
	Gross profit			80,803			65,509			96,517			115,181
	Equity in earnings of unconsolidated affiliates			2,799			8,929			15,215			12,195
	Operating Income			37,142			19,664			57,960			65,524
	Income (loss) before income taxes			(9,778	)(3)		(25,914	)		10,937			24,386
	Net income (loss)			(9,678	)(3)		(28,064	)		4,936			10,588
	Income (loss) per share- basic and diluted		$	(0.26	)(3)	$	(0.75	)	$	0.13		$	0.28
	-1	Includes a charge of $23.3 million for fees paid to Bain Capital incurred in connection with the termination of the Advisory Agreement, pursuant to its terms, upon consummation of the Company’s IPO in June 2014. Also includes a one-time $32.5 million termination payment made to Dow in connection with the termination of our Latex JV Option Agreement. See Note 18 to the consolidated financial statements for further discussion of these items.
	-2	Includes $7.4 million loss on extinguishment of debt related to the July 2014 redemption of $132.5 million in aggregate principal amount of the Senior Notes.
	-3	Includes $20.7 million loss on extinguishment of debt related to the January 2013 amendment of our Senior Secured Credit Facility and repayment of Term Loans.

Subsequent_Events

Subsequent Events	12 Months Ended
	Dec. 31, 2014
Subsequent Events [Abstract]
Subsequent Events	NOTE 24—SUBSEQUENT EVENTS
	The Company has evaluated significant events and transactions that occurred after the balance sheet date through the date of this report and determined that there were no events or transactions that would require recognition or disclosure in our consolidated financial statements for the period ended December 31, 2014.

Supplemental_Guarantor_Condens

Supplemental Guarantor Condensed Consolidating Financial Statements	12 Months Ended
	Dec. 31, 2014
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Supplemental Guarantor Condensed Consolidating Financial Statements	NOTE 25—SUPPLEMENTAL GUARANTOR CONDENSED CONSOLIDATING FINANCIAL STATEMENTS
	In connection with the issuance of the Senior Notes by Trinseo Materials Operating S.C.A. and Trinseo Materials Finance, Inc. (the “Issuers”), this supplemental guarantor financial statement disclosure is included in accordance with Rule 3-10 of Regulation S-X. The Senior Notes are fully and unconditionally guaranteed, jointly and severally, on a senior unsecured basis, in each case, subject to certain exceptions, by Trinseo S.A. (the “Parent Guarantor”) and by certain subsidiaries (together, the “Guarantor Subsidiaries”).
	Each of the Guarantor Subsidiaries is 100 percent owned by the Company. None of the other subsidiaries of the Company, either direct or indirect, guarantee the Senior Notes (together, the “Non-Guarantor Subsidiaries”). The Guarantor Subsidiaries of the Senior Notes, excluding the Parent Guarantor, will be automatically released from those guarantees upon the occurrence of certain customary release provisions.
	The following supplemental condensed consolidating financial information is presented to comply with the Company’s requirements under Rule 3-10 of Regulation S-X:
		•		the Condensed Consolidating Balance Sheets as of December 31, 2014 and December 31, 2013;
		•		the Condensed Consolidating Statements of Comprehensive Income (Loss) for the years ended December 31, 2014, 2013 and 2012; and
		•		the Condensed Consolidating Statements of Cash Flows for the years ended December 31, 2014, 2013 and 2012.
	The Condensed Consolidating Financial Statements are presented using the equity method of accounting for its investments in 100 percent owned subsidiaries. Under the equity method, the investments in subsidiaries are recorded at cost and adjusted for our share of the subsidiaries cumulative results of operations, capital contributions, distributions and other equity changes. The elimination entries principally eliminate investments in subsidiaries and intercompany balances and transactions. The financial information in this footnote should be read in conjunction with the Consolidated Financial Statements presented and other notes related thereto contained within this Annual Report.
	SUPPLEMENTAL CONDENSED CONSOLIDATING BALANCE SHEET
	(In thousands)
			December 31, 2014
			Parent			Issuers			Guarantor			Non-Guarantor			Eliminations			Consolidated
			Guarantor						Subsidiaries			Subsidiaries
	Assets
	Current assets
	Cash and cash equivalents		$	904		$	2,653		$	166,106		$	51,123		$	—		$	220,786
	Accounts receivable, net of allowance			—			62			207,465			393,539			—			601,066
	Intercompany receivables			55			493,090			1,369,837			101,716			(1,964,698	)		—
	Inventories			—			—			381,797			99,709			(7,645	)		473,861
	Deferred income tax assets			—			—			5,382			6,404			—			11,786
	Other current assets			—			148			6,476			8,540			—			15,164
	Total current assets			959			495,953			2,137,063			661,031			(1,972,343	)		1,322,663
	Investments in unconsolidated affiliates			—			—			167,658			—			—			167,658
	Property, plant and equipment, net			—			—			426,905			129,792			—			556,697
	Other assets
	Goodwill			—			—			34,574			—			—			34,574
	Other intangible assets, net			—			—			164,020			1,338			—			165,358
	Investments in subsidiaries			327,100			1,327,675			595,755			—			(2,250,530	)		—
	Intercompany notes receivable—noncurrent			—			1,323,401			15,664			—			(1,339,065	)		—
	Deferred income tax assets—noncurrent			—			—			43,676			3,136			—			46,812
	Deferred charges and other assets			—			36,899			23,398			718			1,339			62,354
	Total other assets			327,100			2,687,975			877,087			5,192			(3,588,256	)		309,098
	Total assets		$	328,059		$	3,183,928		$	3,608,713		$	796,015		$	(5,560,599	)	$	2,356,116
	Liabilities and shareholders’ equity
	Current liabilities
	Short-term borrowings		$	—		$	—		$	—		$	7,559		$	—		$	7,559
	Accounts payable			46			2,323			366,882			65,441			—			434,692
	Intercompany payables			6,944			888,660			522,930			546,150			(1,964,684	)		—
	Income taxes payable			—			—			8,864			549			—			9,413
	Deferred income tax liabilities			—			—			1,171			242			—			1,413
	Accrued expenses and other current liabilities			204			52,001			55,412			13,311			—			120,928
	Total current liabilities			7,194			942,984			955,259			633,252			(1,964,684	)		574,005
	Noncurrent liabilities
	Long-term debt			—			1,192,500			2,148			—			—			1,194,648
	Intercompany notes payable—noncurrent			—			—			1,296,121			42,944			(1,339,065	)		—
	Deferred income tax liabilities—noncurrent			—			2,300			16,145			8,866			—			27,311
	Other noncurrent obligations			—			—			226,708			12,579			—			239,287
	Total noncurrent liabilities			—			1,194,800			1,541,122			64,389			(1,339,065	)		1,461,246
	Commitments and contingencies (Note 15)
	Shareholders’ equity			320,865			1,046,144			1,112,332			98,374			(2,256,850	)		320,865
	Total liabilities and shareholders’ equity		$	328,059		$	3,183,928		$	3,608,713		$	796,015		$	(5,560,599	)	$	2,356,116
	SUPPLEMENTAL CONDENSED CONSOLIDATING BALANCE SHEET
	(In thousands)
			December 31, 2013
			Parent			Issuers			Guarantor			Non-Guarantor			Eliminations			Consolidated
			Guarantor						Subsidiaries			Subsidiaries
	Assets
	Current assets
	Cash and cash equivalents		$	2		$	954		$	154,770		$	40,777		$	—		$	196,503
	Accounts receivable, net of allowance			—			—			272,745			444,739			(2	)		717,482
	Intercompany receivables			—			554,795			1,242,405			93,841			(1,891,041	)		—
	Inventories			—			—			439,952			93,019			(2,780	)		530,191
	Deferred income tax assets			—			—			5,077			4,743			—			9,820
	Other current assets			—			3,954			4,386			14,410			—			22,750
Total current assets			2			559,703			2,119,335			691,529			(1,893,823	)		1,476,746
Investments in unconsolidated affiliates			—			—			155,887			—			—			155,887
Property, plant and equipment, net			—			—			476,137			130,290			—			606,427
Other assets
Goodwill			—			—			37,273			—			—			37,273
Other intangible assets, net			—			—			171,352			162			—			171,514
Investments in subsidiaries			343,429			1,232,608			615,153			—			(2,191,190	)		—
Intercompany notes receivable—noncurrent			—			1,359,637			17,739			—			(1,377,376	)		—
Deferred income tax assets—noncurrent			—			—			36,260			6,678			—			42,938
Deferred charges and other assets			—			48,801			33,607			990			598			83,996
Total other assets			343,429			2,641,046			911,384			7,830			(3,567,968	)		335,721
Total assets		$	343,431		$	3,200,749		$	3,662,743		$	829,649		$	(5,461,791	)	$	2,574,781
Liabilities and shareholder’s equity
Current liabilities
Short-term borrowings		$	—		$	3,646		$	—		$	5,108		$	—		$	8,754
Accounts payable			—			2,570			436,147			70,378			(2	)		509,093
Intercompany payables			158			763,022			550,741			576,354			(1,890,275	)		—
Income taxes payable			—			—			9,407			276			—			9,683
Deferred income tax liabilities			—			—			784			2,119			—			2,903
Accrued expenses and other current liabilities			71			58,977			66,061			11,020			—			136,129
Total current liabilities			229			828,215			1,063,140			665,255			(1,890,277	)		666,562
Noncurrent liabilities
Long-term debt			—			1,325,000			2,667			—			—			1,327,667
Intercompany notes payable—noncurrent			—			—			1,347,773			29,602			(1,377,375	)		—
Deferred income tax liabilities—noncurrent			—			1,600			17,115			8,217			—			26,932
Other noncurrent obligations			—			—			198,479			11,939			—			210,418
Total noncurrent liabilities			—			1,326,600			1,566,034			49,758			(1,377,375	)		1,565,017
Commitments and contingencies (Note 15)
Shareholder’s equity			343,202			1,045,934			1,033,569			114,636			(2,194,139	)		343,202
Total liabilities and shareholder’s equity		$	343,431		$	3,200,749		$	3,662,743		$	829,649		$	(5,461,791	)	$	2,574,781
SUPPLEMENTAL CONDENSED CONSOLIDATING STATEMENT OF COMPREHENSIVE INCOME (LOSS)
(In thousands)
		Year Ended December 31, 2014
		Parent			Issuers			Guarantor			Non-			Eliminations			Consolidated
		Guarantor						Subsidiaries			Guarantor
											Subsidiaries
Net sales		$	—		$	—		$	4,684,218		$	1,366,437		$	(922,694	)	$	5,127,961
Cost of sales			—			560			4,425,078			1,322,771			(917,769	)		4,830,640
Gross profit			—			(560	)		259,140			43,666			(4,925	)		297,321
Selling, general and administrative expenses			11,822			18,405			180,730			21,629			—			232,586
Equity in earnings of unconsolidated affiliates			—			—			47,749			—			—			47,749
Operating income (loss)			(11,822	)		(18,965	)		126,159			22,037			(4,925	)		112,484
Interest expense, net			—			120,910			1,535			2,478			—			124,923
Intercompany interest expense (income), net			12			(81,551	)		69,902			11,609			28			—
Loss on extinguishment of long-term debt			—			7,390			—			—			—			7,390
Other expense (income), net			6,330			17,742			(3,323	)		7,052			(17	)		27,784
Equity in loss (earnings) of subsidiaries			49,132			(59,281	)		32,878			—			(22,729	)		—
Income (loss) before income taxes			(67,296	)		(24,175	)		25,167			898			17,793			(47,613	)
Provision for (benefit from) income taxes			36			1,409			15,004			4,011			(741	)		19,719
Net income (loss)		$	(67,332	)	$	(25,584	)	$	10,163		$	(3,113	)	$	18,534		$	(67,332	)
Comprehensive income (loss)		$	(230,927	)	$	(189,179	)	$	(150,388	)	$	(6,157	)	$	345,724		$	(230,927	)
		Year Ended December 31, 2013
		Parent			Issuers			Guarantor			Non-			Eliminations			Consolidated
		Guarantor						Subsidiaries			Guarantor
											Subsidiaries
Net sales		$	—		$	—		$	4,793,183		$	1,476,538		$	(962,307	)	$	5,307,414
Cost of sales			—			996			4,485,470			1,427,391			(964,453	)		4,949,404
Gross profit			—			(996	)		307,713			49,147			2,146			358,010
Selling, general and administrative expenses			10,073			3,981			181,756			21,048			—			216,858
Equity in earnings of unconsolidated affiliates			—			—			39,138			—			—			39,138
Operating income (loss)			(10,073	)		(4,977	)		165,095			28,099			2,146			180,290
Interest expense, net			—			125,711			3,656			2,671			—			132,038
Intercompany interest expense (income), net			7			(88,851	)		76,042			12,803			(1	)		—
Loss on extinguishment of long-term debt			—			20,744			—			—			—			20,744
Other expense (income), net			6			(32,325	)		39,534			20,647			15			27,877
Equity in loss (earnings) of subsidiaries			12,128			(44,373	)		(3,346	)		—			35,591			—
Income (loss) before income taxes			(22,214	)		14,117			49,209			(8,022	)		(33,459	)		(369	)
Provision for (benefit from) income taxes			4			1,735			16,964			2,593			553			21,849
Net income (loss)		$	(22,218	)	$	12,382		$	32,245		$	(10,615	)	$	(34,012	)	$	(22,218	)
Comprehensive income (loss)		$	41,587		$	76,187		$	91,240		$	(5,805	)	$	(161,622	)	$	41,587
SUPPLEMENTAL CONDENSED CONSOLIDATING STATEMENT OF COMPREHENSIVE INCOME (LOSS)
(In thousands)
		Year Ended December 31, 2012
		Parent			Issuers			Guarantor			Non-			Eliminations			Consolidated
		Guarantor						Subsidiaries			Guarantor
											Subsidiaries
Net sales		$	—		$	—		$	4,947,970		$	1,613,401		$	(1,109,462	)	$	5,451,909
Cost of sales			—			279			4,691,834			1,532,264			(1,109,189	)		5,115,188
Gross profit			—			(279	)		256,136			81,137			(273	)		336,721
Selling, general and administrative expenses			7,374			3,994			147,454			23,247			—			182,069
Equity in earnings of unconsolidated affiliates			—			—			27,140			—			—			27,140
Operating income (loss)			(7,374	)		(4,273	)		135,822			57,890			(273	)		181,792
Interest expense, net			—			104,069			917			4,985			—			109,971
Intercompany interest expense (income), net			1			(88,245	)		76,510			11,782			(48	)		—
Other expense (income), net			4			(20,515	)		21,376			23,125			(11	)		23,979
Equity in loss (earnings) of subsidiaries			(37,661	)		(53,200	)		(75,950	)		—			166,811			—
Income (loss) before income taxes			30,282			53,618			112,969			17,998			(167,025	)		47,842
Provision for (benefit from) income taxes			—			(808	)		22,159			(3,739	)		(52	)		17,560
Net income (loss)		$	30,282		$	54,426		$	90,810		$	21,737		$	(166,973	)	$	30,282
Comprehensive income (loss)		$	1,667		$	25,811		$	59,111		$	24,821		$	(109,743	)	$	1,667
SUPPLEMENTAL CONDENSED CONSOLIDATING STATEMENT OF CASH FLOWS
(In thousands)
		Year Ended December 31, 2014
		Parent			Issuers			Guarantor			Non-			Eliminations			Consolidated
		Guarantor						Subsidiaries			Guarantor
											Subsidiaries
Cash flows from operating activities
Cash provided by (used in) operating activities		$	(1,079	)	$	(58,667	)	$	107,137		$	81,641		$	(11,811	)	$	117,221
Cash flows from investing activities
Capital expenditures			—			—			(85,021	)		(13,585	)		—			(98,606	)
Proceeds from the sale of businesses and other assets			—			—			—			6,257			—			6,257
Payment for working capital adjustment from sale of business			—			—			(700	)		—			—			(700	)
Distributions from unconsolidated affiliates			—			—			978			—			—			978
Investments in subsidiaries			(196,400	)		(199,400	)		(196,626	)		—			592,426			—
Intercompany investing activities			—			2,462			(181,036	)		—			178,574			—
(Increase) / decrease in restricted cash			—			—			(533	)		—			—			(533	)
Cash provided by (used in) investing activities			(196,400	)		(196,938	)		(462,938	)		(7,328	)		771,000			(92,604	)
Cash flows from financing activities
Proceeds from initial public offering, net of offering costs			198,087			—			—			—			—			198,087
Intercompany short-term borrowings, net			295			14,254			(34,986	)		(927	)		21,364			—
Short-term borrowings, net			—			(3,646	)		(273	)		(52,982	)		—			(56,901	)
Contributions from parent companies			—			189,400			395,800			7,226			(592,426	)		—
Distributions to parent companies			—			—			—			(11,811	)		11,811			—
Repayments of Senior Notes			—			(132,500	)		—			—			—			(132,500	)
Proceeds from (repayments of) intercompany long-term debt			—			189,400			13,000			(2,462	)		(199,938	)		—
Proceeds from Accounts Receivable Securitization Facility			—			—			—			308,638			—			308,638
Repayments of Accounts Receivable Securitization Facility			—			—			—			(309,205	)		—			(309,205	)
Cash provided by (used in) financing activities			198,382			256,908			373,541			(61,523	)		(759,189	)		8,119
Effect of exchange rates on cash			(1	)		396			(6,404	)		(2,444	)		—			(8,453	)
Net change in cash and cash equivalents			902			1,699			11,336			10,346			—			24,283
Cash and cash equivalents—beginning of period			2			954			154,770			40,777			—			196,503
Cash and cash equivalents—end of period		$	904		$	2,653		$	166,106		$	51,123		$	—		$	220,786
SUPPLEMENTAL CONDENSED CONSOLIDATING STATEMENT OF CASH FLOWS
(In thousands)
		Year Ended December 31, 2013
		Parent			Issuers			Guarantor			Non-			Eliminations			Consolidated
		Guarantor						Subsidiaries			Guarantor
											Subsidiaries
Cash flows from operating activities
Cash provided by (used in) operating activities		$	(78	)	$	27,101		$	34,470		$	149,842		$	—		$	211,335
Cash flows from investing activities
Capital expenditures			—			—			(61,573	)		(11,971	)		—			(73,544	)
Proceeds from capital expenditures subsidy			—			—			18,769			—			—			18,769
Proceeds from the sale of businesses and assets			—			—			15,221			—			—			15,221
Advance payment refunded			—			—			—			(2,711	)		—			(2,711	)
Distributions from unconsolidated affiliates			—			—			1,055			—			—			1,055
Intercompany investing activities			—			(4,000	)		(43,012	)		—			47,012			—
Decrease in restricted cash			—			—			—			7,852			—			7,852
Cash provided by (used in) investing activities			—			(4,000	)		(69,540	)		(6,830	)		47,012			(33,358	)
Cash flows from financing activities
Deferred financing fees			—			(47,488	)		(767	)		—			—			(48,255	)
Intercompany short-term borrowings, net			77			37,793			5,991			(849	)		(43,012	)		—
Short-term borrowings, net			—			(7,727	)		(267	)		(34,883	)		—			(42,877	)
Proceeds from issuance of intercompany long-term debt			—			—			—			4,000			(4,000	)		—
Repayments of Term Loans			—			(1,239,000	)		—			—			—			(1,239,000	)
Proceeds from issuance of Senior Notes			—			1,325,000			—			—			—			1,325,000
Proceeds from issuance of Accounts Receivable Securitization Facility			—			—			—			376,630			—			376,630
Repayments of Accounts Receivable Securitization Facility			—			—			—			(471,696	)		—			(471,696	)
Proceeds from the draw of revolving debt			—			405,000			—			—			—			405,000
Repayments on the revolving debt			—			(525,000	)		—			—			—			(525,000	)
Cash provided by (used in) financing activities			77			(51,422	)		4,957			(126,798	)		(47,012	)		(220,198	)
Effect of exchange rates on cash			—			(136	)		2,795			(292	)		—			2,367
Net change in cash and cash equivalents			(1	)		(28,457	)		(27,318	)		15,922			—			(39,854	)
Cash and cash equivalents—beginning of period			3			29,411			182,088			24,855			—			236,357
Cash and cash equivalents—end of period		$	2		$	954		$	154,770		$	40,777		$	—		$	196,503
SUPPLEMENTAL CONDENSED CONSOLIDATING STATEMENT OF CASH FLOWS
(In thousands)
		Year Ended December 31, 2012
		Parent			Issuers			Guarantor			Non-			Eliminations			Consolidated
		Guarantor						Subsidiaries			Guarantor
											Subsidiaries
Cash flows from operating activities
Cash provided by (used in) operating activities		$	(48	)	$	7,865		$	113,446		$	64,852		$	—		$	186,115
Cash flows from investing activities
Capital expenditures			—			—			(110,746	)		(7,758	)		—			(118,504	)
Proceeds from capital expenditures subsidy			—			—			6,079			—			—			6,079
Proceeds from the sale of property, plant and equipment			—			—			206			47			—			253
Advance payment received			—			—			—			2,602			—			2,602
Investments in subsidiaries			(162,155	)		—			(22,155	)		—			184,310			—
Intercompany investing activities			—			144,463			68,268			—			(212,731	)		—
Increase in restricted cash			—			—			—			(7,725	)		—			(7,725	)
Cash provided by (used in) investing activities			(162,155	)		144,463			(58,348	)		(12,834	)		(28,421	)		(117,295	)
Cash flows from financing activities
Deferred financing fees			—			(7,392	)		(688	)		—			—			(8,080	)
Intercompany short-term borrowings, net			51			(49,818	)		1,444			(18,625	)		66,948			—
Short-term borrowings, net			—			(4,159	)		(407	)		(33,321	)		—			(37,887	)
Contributions from parent companies			—			22,155			162,155			—			(184,310	)		—
Capital contributions from shareholder			162,155			—			—			—			—			162,155
Repayments of intercompany indebtedness			—			—			(144,183	)		(1,600	)		145,783			—
Repayments of Term Loans			—			(147,000	)		—			—			—			(147,000	)
Proceeds from issuance of Accounts Receivable Securitization Facility			—			—			—			113,828			—			113,828
Repayments of Accounts Receivable Securitization Facility			—			—			—			(130,233	)		—			(130,233	)
Proceeds from the draw of revolving debt			—			1,105,000			—			—			—			1,105,000
Repayments on the revolving debt			—			(1,135,000	)		—			—			—			(1,135,000	)
Cash provided by (used in) financing activities			162,206			(216,214	)		18,321			(69,951	)		28,421			(77,217	)
Effect of exchange rates on cash			—			16			246			(821	)		—			(559	)
Net change in cash and cash equivalents			3			(63,870	)		73,665			(18,754	)		—			(8,956	)
Cash and cash equivalents—beginning of period			—			93,281			108,423			43,609			—			245,313
Cash and cash equivalents—end of period		$	3		$	29,411		$	182,088		$	24,855		$	—		$	236,357

Schedule_IIFinancial_Statement

Schedule II-Financial Statement Schedule Valuation and Qualifying Accounts	12 Months Ended
	Dec. 31, 2014
Valuation and Qualifying Accounts [Abstract]
Schedule II-Financial Statement Schedule Valuation and Qualifying Accounts	TRINSEO S.A.
	SCHEDULE II—FINANCIAL STATEMENT SCHEDULE
	VALUATION AND QUALIFYING ACCOUNTS
	(In Millions)
			Balance at		Charged to			Deduction			Currency			Balance at
			Beginning of		Cost and			from			Translation			End of
			the Period		Expense			Reserves			Adjustments			the Period
	Allowance for doubtful accounts:
	Year ended December 31, 2014		$	5.9	$	1.1		$	(0.0	)(a)	$	(0.7	)	$	6.3
	Year ended December 31, 2013			8.4		(3.0	)		(0.1	)(a)		0.6			5.9
	Year ended December 31, 2012			8.7		0.3			(0.3	)(a)		(0.3	)		8.4
	Tax valuation allowances:
	Year ended December 31, 2014		$	50.4	$	18.2		$	—		$	(1.7	)	$	66.9
	Year ended December 31, 2013			41.3		10.7			—			(1.6	)		50.4
	Year ended December 31, 2012			47.4		(5.5	)		—			(0.6	)		41.3
	(a)	Amounts written off, net of recoveries. Amount in 2014 is less than $0.1 million.

Basis_of_Presentation_and_Summ1

Basis of Presentation and Summary of Significant Accounting Policies (Policies)	12 Months Ended
	Dec. 31, 2014
Accounting Policies [Abstract]
Basis of Presentation and Principles of Consolidation	Basis of Presentation and Principles of Consolidation
	The accompanying consolidated financial statements of the Company as of December 31, 2014 and 2013 and for each of the three years ended 2014 are prepared in accordance with accounting principles generally accepted in the United States of America (“GAAP”). The consolidated financial statements of the Company contain the accounts of all entities that are controlled and variable interest entities (“VIEs”) for which the Company is the primary beneficiary. A VIE is defined as a legal entity that has equity investors that do not have sufficient equity at risk for the entity to support its activities without additional subordinated financial support or, as a group, the holders of the equity at risk lack (i) the power to direct the entity’s activities or (ii) the obligation to absorb the expected losses or the right to receive the expected residual returns of the entity. A VIE is required to be consolidated by a company if that company is the primary beneficiary. Refer to Note 10 for further discussion of the Company’s accounts receivable securitization facility, which qualifies as a VIE and is consolidated within the Company’s financial statements.
	All intercompany balances and transactions are eliminated. Joint ventures over which the Company has the ability to exercise significant influence that are not consolidated are accounted for by the equity method.
	Certain prior year amounts have been reclassified to conform to the current year presentation. These reclassifications did not have a material impact on the Company’s financial position.
Use of Estimates in Financial Statement Preparation	Use of Estimates in Financial Statement Preparation
	The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the amounts reported in the consolidated financial statements and accompanying notes. Actual amounts could differ from these estimates.
Concentration of Credit Risk	Concentration of Credit Risk
	Financial instruments that potentially subject the Company to concentrations of credit risk consist principally of cash equivalents and accounts receivables. The Company uses major financial institutions with high credit ratings to engage in transactions involving cash equivalents. The Company minimizes credit risk in its receivables by selling products to a diversified portfolio of customers in a variety of markets located throughout the world.
	The Company performs ongoing evaluations of its customers’ credit and generally does not require collateral. The Company maintains an allowance for doubtful accounts for losses resulting from the inability of specific customers to meet their financial obligations, representing our best estimate of probable credit losses in existing trade accounts receivable. A specific reserve for doubtful receivables is recorded against the amount due from these customers. For all other customers, the Company recognizes reserves for doubtful receivables based on historical experience.
Financial Instruments	Financial Instruments
	The carrying amounts of the Company’s financial instruments, including cash and cash equivalents, accounts receivable, accounts payable and accrued and other current liabilities, approximate fair value due to their generally short maturities.
	The estimated fair value of the Company’s 8.750% Senior Notes (as defined in Note 10) is determined using level 2 inputs within the fair value hierarchy. As of December 31, 2014 and 2013, the Senior Notes had a fair value of approximately $1,212.0 million and $1,366.4 million, respectively. When outstanding, the estimated fair values of borrowings under the Company’s Revolving Facility and Accounts Receivable Securitization Facility (as defined in Note 10) are determined using level 2 inputs within the fair value hierarchy. The carrying amounts of borrowings under the Revolving Facility and Accounts Receivable Securitization Facility approximate fair value as these borrowings bear interest based on prevailing variable market rates.
	At times, the Company manages its exposure to changes in foreign currency exchange rates, where possible, by entering into foreign exchange forward contracts. When outstanding, all derivatives, whether designated in hedging relationships or not, are required to be recorded on the balance sheet at fair value. The fair value of the derivatives is determined from sources independent of the Company, including the financial institutions which are party to the derivative instruments. The fair value of derivatives also considers the credit default risk of the paying party. If the derivative is designated as a fair value hedge, the changes in the fair value of the derivative and the hedged item will be recognized in earnings. If the derivative is designated as a cash flow hedge, the effective portion of the change in the fair value of the derivative will be recorded in other comprehensive income and will be recognized in the consolidated statements of operations when the hedged item affects earnings.
	As of December 31, 2014, the Company had foreign exchange forward contracts outstanding that were not designated for hedge accounting treatment, while no such contracts were outstanding as of December 31, 2013. As such, the settlements and changes in fair value of underlying instruments are recognized in “Other expense (income), net” in the consolidated statements of operations. For the years ended December 31, 2014, 2013, and 2012, the Company recognized losses related to these forward contracts of $28.2 million, $0.6 million, and $4.8 million, respectively.
	Forward contracts are entered into with a limited number of counterparties, each of which allows for net settlement of all contracts through a single payment in a single currency in the event of a default on or termination of any one contract. The Company records these foreign exchange forward contracts on a net basis, by counterparty within the consolidated balance sheets.
	The Company presents the cash receipts and payments from hedging activities in the same category as the cash flows from the items subject to hedging relationships. As the items subject to economic hedging relationships are the Company’s operating assets and liabilities, the related cash flows are classified within operating activities in the consolidated statements of cash flows.
Foreign Currency Translation	Foreign Currency Translation
	For the majority of the Company’s subsidiaries, the local currency has been identified as the functional currency. For remaining subsidiaries, the U.S. dollar has been identified as the functional currency due to the significant influence of the U.S. dollar on their operations. Gains and losses resulting from the translation of various functional currencies into U.S. dollars are not recorded within the consolidated statements of operations. Rather, they are recorded within the cumulative translation adjustment account as a separate component of shareholders’ equity (accumulated other comprehensive income) on the consolidated balance sheets. The Company translates asset and liability balances at exchange rates in effect at the end of the period and income and expense transactions at the average exchange rates in effect during the period. Gains and losses resulting from foreign currency transactions are recorded within the consolidated statements of operations.
	For the year ended December 31, 2014, the Company recognized net foreign exchange transaction gains of $32.4 million. For the years ended December 31, 2013 and 2012, the Company recognized net foreign exchange transaction losses of $18.3 million and $18.0 million, respectively. These amounts exclude the impacts of foreign exchange forward contracts discussed above. Gains and losses on net foreign exchange transactions are recorded within “Other expense (income), net” in the consolidated statements of operations.
Environmental Matters	Environmental Matters
	Accruals for environmental matters are recorded when it is considered probable that a liability has been incurred and the amount of the liability can be reasonably estimated, based on current law and existing technologies. These accruals are adjusted periodically as assessment and remediation efforts progress, or as additional technical or legal information become available. Accruals for environmental liabilities are recorded within “Other noncurrent obligations” in the consolidated balance sheets at undiscounted amounts. As of December 31, 2014 and 2013, there were no accruals for environmental liabilities recorded.
	Environmental costs are capitalized if the costs extend the life of the property, increase its capacity, or mitigate or prevent contamination from future operations. Environmental costs are also capitalized in recognition of legal asset retirement obligations resulting from the acquisition, construction or normal operation of a long-lived asset. Any costs related to environmental contamination treatment and clean-ups are charged to expense. Estimated future incremental operations, maintenance and management costs directly related to remediation are accrued when such costs are probable and reasonably estimable.
Cash and Cash Equivalents	Cash and Cash Equivalents
	Cash and cash equivalents generally include time deposits or highly liquid investments with original maturities of three months or less.
Inventories	Inventories
	Inventories are stated at the lower of cost or market, with cost being determined on the first-in, first-out (“FIFO”) method. The Company periodically reviews its inventory for excess or obsolete inventory, and will write-down the excess or obsolete inventory value to its net realizable value, if applicable.
Property, Plant and Equipment	Property, Plant and Equipment
	Property, plant and equipment are carried at cost less accumulated depreciation and less impairment, if applicable, and are depreciated over their estimated useful lives using the straight-line method. Capitalized costs associated with computer software for internal use are amortized on a straight-line basis, generally over 5 years.
	Expenditures for maintenance and repairs are charged against income as incurred. Expenditures that significantly increase asset value, extend useful asset lives or adapt property to a new or different use are capitalized. These expenditures include planned major maintenance activity or turnaround activities which increase our manufacturing plants’ output and improve production efficiency as compared to pre-turnaround operations. As of December 31, 2014 and 2013, $9.2 million and $13.1 million, respectively, of the Company’s net costs related to turnaround activities were capitalized within “Deferred charges and other assets” in the consolidated balance sheets, and are being amortized over the period until the next scheduled turnaround.
	The Company periodically evaluates actual experience to determine whether events and circumstances have occurred that may warrant revision of the estimated useful lives of property, plant and equipment. Engineering and other costs directly related to the construction of property, plant and equipment are capitalized as construction in progress until construction is complete and such property, plant and equipment is ready and available to perform its specifically assigned function. Upon retirement or other disposal, the asset cost and related accumulated depreciation are removed from the accounts and the net amount, less any proceeds, is charged or credited to income. The Company also capitalizes interest as a component of the cost of capital assets constructed for its own use.
Impairment and Disposal of Long-Lived Assets	Impairment and Disposal of Long-Lived Assets
	The Company evaluates long-lived assets for impairment whenever events or changes in circumstances indicate that the carrying amount of an asset or asset group may not be recoverable. When undiscounted future cash flows are not expected to be sufficient to recover an asset’s carrying amount, the asset is written down to its fair value based on a discounted cash flow analysis utilizing market participant assumptions.
	Long-lived assets to be disposed of by sale are classified as held-for-sale and are reported at the lower of carrying amount or fair value less cost to sell, and depreciation is ceased. Long-lived assets to be disposed of in a manner other than by sale are classified as held-and-used until they are disposed.
Goodwill and Other Intangible Assets	Goodwill and Other Intangible Assets
	The Company records goodwill when the purchase price of a business acquisition exceeds the estimated fair value of net identified tangible and intangible assets acquired. Goodwill is tested for impairment at the reporting unit level annually, or more frequently when events or changes in circumstances indicate that the fair value of a reporting unit has more likely than not declined below its carrying value. The Company utilizes a market approach and an income approach (under the discounted cash flow method) to calculate the fair value of its reporting units. The annual impairment assessment is completed using a measurement date of October 1st. No goodwill impairment losses were recorded in the years ended December 31, 2014, 2013 and 2012.
	Finite-lived intangible assets, such as our intellectual property and manufacturing capacity rights, are amortized on a straight-line basis and are reviewed for impairment or obsolescence if events or changes in circumstances indicate that their carrying amount may not be recoverable. If impaired, intangible assets are written down to fair value based on discounted cash flows. No intangible asset impairment losses were recorded in the years ended December 31, 2014, 2013 and 2012
Deferred Financing Fees	Deferred Financing Fees
	Capitalized fees and costs incurred in connection with the Company’s financing arrangements are recorded in “Deferred charges and other assets” within the consolidated balance sheets. For the Senior Notes (and the Term Loans, prior to their repayment in January 2013), deferred financing fees are amortized over the term of the agreement using the effective interest method, while for the Revolving Facility and the Accounts Receivable Securitization Facility, deferred financing fees are amortized using the straight-line method over the term of the respective facility. Amortization of deferred financing fees is recorded in “Interest expense, net” within the consolidated statements of operations.
Investments in Unconsolidated Affiliates	Investments in Unconsolidated Affiliates
	Investments in unconsolidated affiliates in which the Company has the ability to exercise significant influence (generally, 20% to 50% owned companies) are accounted for using the equity method. Investments are evaluated for impairment whenever events or changes in circumstances indicate that the carrying amount of the investment may not be recoverable. An impairment loss is recorded whenever a decline in fair value of an investment in an unconsolidated affiliate below its carrying amount is determined to be other-than-temporary.
Sales	Sales
	Sales are recognized when the revenue is realized or realizable and the earnings process is complete, which occurs when risk and title to the product transfers to the customer, typically at the time shipment is made. As such, title to the product generally passes when the product is delivered to the freight carrier. Standard terms of delivery are included in contracts of sale, order confirmation documents and invoices. Freight costs and any directly related costs of transporting finished product to customers are recorded as “Cost of sales” in the consolidated statements of operations. Taxes on sales are excluded from net sales.
	Sales are recorded net of estimates for returns and price allowances, including discounts for prompt payment and volume-based incentives.
Cost of Sales	Cost of Sales
	The Company classifies the costs of manufacturing and distributing its products as cost of sales. Manufacturing costs include raw materials, utilities, packaging and fixed manufacturing costs associated with production. Fixed manufacturing costs include such items as plant site operating costs and overhead, production planning, depreciation and amortization, repairs and maintenance, environmental, and engineering costs. Distribution costs include shipping and handling costs.
Selling, General and Administrative Expenses	Selling, General and Administrative Expenses
	Selling, general and administrative (“SG&A”) expenses are charged to expense as incurred. SG&A expenses are the cost of services performed by the marketing and sales functions (including sales managers, field sellers, marketing research, marketing communications and promotion and advertising materials) and by administrative functions (including product management, research and development (“R&D”), business management, customer invoicing, and human resources). R&D expenses include the cost of services performed by the R&D function, including technical service and development, process research including pilot plant operations, and product development.
	Total R&D costs included in SG&A expenses were approximately $53.4 million, $49.7 million and $48.3 million for the years ended December 31, 2014, 2013 and 2012, respectively.
	The Company expenses promotional and advertising costs as incurred to SG&A expenses. Total promotional and advertising expenses were approximately $2.9 million, $3.0 million and $3.2 million for the years ended December 31, 2014, 2013 and 2012, respectively.
Pension and Postretirement Benefits Plans	Pension and Postretirement Benefits Plans
	The Company has several defined benefit plans, under which participants earn a retirement benefit based upon a formula set forth in the plan. The Company also provides certain health care and life insurance benefits to retired employees mainly in the United States and Brazil. The plans provide health care benefits, including hospital, physicians’ services, drug and major medical expense coverage, and life insurance benefits.
	Accounting for defined benefit pension plans and other postretirement benefit plans, and any curtailments and settlements thereof, requires various assumptions, including, but not limited to, discount rates, expected rates of return on plan assets and future compensation growth rates. The Company evaluates these assumptions at least once each year, or as facts and circumstances dictate, and makes changes as conditions warrant.
	A settlement is a transaction that is an irrevocable action that relieves the employer (or the plan) of primary responsibility for a pension or postretirement benefit obligation, and that eliminates significant risks related to the obligation and the assets used to effect the settlement. When a settlement occurs, the Company does not record settlement gains or losses during interim periods when the cost of all settlements in a year is less than or equal to the sum of the service cost and interest cost components of net periodic pension cost for the plan in that year.
Income Taxes	Income Taxes
	The provision for income taxes is determined using the asset and liability approach of accounting for income taxes. Under this approach, deferred taxes represent the future tax consequences expected to occur when the reported amounts of assets and liabilities are recovered or paid. The provision for income taxes represents income taxes paid or payable for the current year plus the change in deferred taxes during the year. Deferred taxes result from differences between the financial and tax basis of the Company’s assets and liabilities and are adjusted for changes in tax rates and tax laws when changes are enacted. Valuation allowances are recorded to reduce deferred tax assets when it is more likely than not that a tax benefit will not be realized. Provision has been made for income taxes on unremitted earnings of subsidiaries and affiliates, except for subsidiaries in which earnings are deemed to be indefinitely invested.
	The Company recognizes the financial statement effects of uncertain income tax positions when it is more likely than not, based on the technical merits, that the position will be sustained upon examination. The Company accrues for other tax contingencies when it is probable that a liability to a taxing authority has been incurred and the amount of the contingency can be reasonably estimated. Interest accrued related to unrecognized tax and income tax related penalties are included in the provision for income taxes. The current portion of uncertain income taxes positions is recorded in “Income taxes payable” while the long-term portion is recorded in “Other noncurrent obligations” in the consolidated balance sheets.
	Income tax expense recognized for the year ended December 31, 2012 includes cumulative adjustments of $4.1 million and $2.0 million from 2010 and 2011, respectively, which resulted in a reduction of income tax expense, net, of approximately $6.1 million. These adjustments relate to the correction of prior period errors, which resulted from the reconciliation of the income tax provision to tax return positions completed during 2012. The Company believes this is not material to its results of operations for the year ended December 31, 2012.
Stock-based Compensation	Stock-based Compensation
	Stock-based compensation expense is measured at the grant date, based on the fair value of the award. Time (service)-based restricted stock awards are generally recognized as expense on a graded vesting basis over the related service period. For performance-based restricted stock awards, the Company recognizes compensation cost if and when it concludes that it is probable that the related performance condition will be achieved. When applicable, the Company calculates the fair value of its performance-based restricted stock awards using a combination of a call option and digital option model.
	Forfeitures are estimated at the time of grant and revised, if necessary, in subsequent periods if actual forfeitures differ from those estimates. Stock-based compensation expense recognized in our consolidated financial statements is based on awards that are ultimately expected to vest.
	Periodically, the Parent may sell non-transferable restricted stock to certain officers and key members of management of the Company. Stock-based compensation expense on this non-transferable restricted stock is recognized if the non-transferable restricted stock is purchased at a price which is less than the fair value of the Parent’s common stock.
Recent Accounting Guidance	Recent Accounting Guidance
	In February 2013, the Financial Accounting Standards Board (“FASB”) issued amendments for the recognition, measurement, and disclosure of obligations resulting from joint and several liability arrangements for which the total amount of the obligation is fixed at the reporting date, except for obligations addressed within existing guidance. This guidance requires an entity to measure those obligations as the sum of the amount the reporting entity agreed to pay on the basis of its arrangement among its co-obligors and any additional amount the reporting entity expects to pay on behalf of its co-obligors. This guidance also requires an entity to disclose the nature and amount of the obligation as well as other information about those obligations. The Company adopted this guidance on a retrospective basis effective January 1, 2014, and the adoption did not have a significant impact on the Company’s financial position or results of operations.
	In July 2013, the FASB issued guidance to clarify the presentation of an unrecognized tax benefit when a net operating loss carryforward, a similar tax loss, or a tax credit carryforward exists. The new guidance requires that unrecognized tax benefits be netted against all available same-jurisdiction losses or other tax carryforwards that would be utilized, rather than only against carryforwards that are created by the unrecognized tax benefits. The Company adopted this guidance prospectively effective January 1, 2014, and the adoption did not have a significant impact on the Company’s financial position or results of operations.
	In April 2014, the FASB issued amendments to guidance for reporting discontinued operations and disposals of components of an entity. The amended guidance requires that a disposal representing a strategic shift that has (or will have) a major effect on an entity’s financial results or a business activity classified as held-for-sale should be reported as discontinued operations. The amendments also expand the disclosure requirements for discontinued operations and add new disclosures for individually significant dispositions that do not qualify as discontinued operations. The amendments are effective prospectively for fiscal years, and interim reporting periods within those years, beginning after December 15, 2014 (early adoption is permitted only for disposals that have not been previously reported). The implementation of the amended guidance is not expected to have a material impact on the Company’s consolidated financial position or results of operations.
	In May 2014, the FASB and the International Accounting Standards Board (“IASB”) jointly issued new guidance which clarifies the principles for recognizing revenue and develops a common revenue standard for GAAP and International Financial Reporting Standards (“IFRS”). The core principle of the guidance is that an entity should recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. This guidance is effective for public entities for annual and interim periods beginning after December 15, 2016. Early adoption is not permitted under GAAP and retrospective application is permitted, but not required. The Company is currently assessing the impact of adopting this guidance on its financial statements and results of operations.
	In June 2014, the FASB issued updated guidance related to stock compensation. The updated guidance requires that a performance target that affects vesting, and that could be achieved after the requisite service period, be treated as a performance condition. As such, the performance target should not be reflected in estimating the grant date fair value of the award. This update further clarifies that compensation cost should be recognized in the period in which it becomes probable that the performance target will be achieved and should represent the compensation cost attributable to the periods for which the requisite service has already been rendered. The updated guidance is effective for annual and interim periods beginning after December 15, 2015 and can be applied either (a) prospectively to all awards granted or modified after the effective date or (b) retrospectively to all awards with performance targets that are outstanding as of the beginning of the earliest annual period presented and to all newly granted or modified awards thereafter. Early adoption is permitted. This guidance is not relevant to the Company’s currently outstanding awards; however, the Company will continue to evaluate the applicability of this guidance to future awards as necessary.
	In January 2015, the FASB issued guidance to simplify income statement classification by removing the concept of extraordinary items from U.S. GAAP. This guidance is effective for public entities beginning after December 15, 2015, with early adoption permitted, but only as of the beginning of the fiscal year of adoption. The implementation of this guidance is not expected to have a material impact on the Company’s financial statements.

Acquisitions_and_Divestitures_

Acquisitions and Divestitures (Tables)	12 Months Ended
	Dec. 31, 2014
Business Combinations [Abstract]
Schedule of Loss Calculation	The loss calculation is as follows:
	Assets
	Inventories	$	8,135
	Property, plant and equipment, net		9,401
	Other intangibles assets, net		1,624
	Goodwill		383
	Total assets sold	$	19,543
	Liabilities
	Pension and other benefits	$	791
	Total liabilities sold	$	791
	Net assets sold	$	18,752
	Sales proceeds, net of amount paid to buyer of $0.7 million		14,566
	Loss on sale	$	4,186

Investments_in_Unconsolidated_1

Investments in Unconsolidated Affiliates (Tables)	12 Months Ended
	Dec. 31, 2014
Equity Method Investments and Joint Ventures [Abstract]
Summarized Financial Information of Unconsolidated Affiliates	The summarized financial information of the Company’s unconsolidated affiliates is shown below:
		December 31,
		2014		2013
	Current assets	$	498,516	$	528,223
	Noncurrent assets		313,648		333,894
	Total assets	$	812,164	$	862,117
	Current liabilities	$	253,507	$	281,823
	Noncurrent liabilities		49,084		48,415
	Total liabilities	$	302,591	$	330,238
		Year Ended
		December 31,
		2014		2013		2012
	Sales	$	2,161,232	$	2,281,045	$	2,058,060
	Gross profit	$	117,667	$	94,148	$	82,511
	Net income	$	52,957	$	38,504	$	21,408

Accounts_Receivable_Tables

Accounts Receivable (Tables)	12 Months Ended
	Dec. 31, 2014
Receivables [Abstract]
Schedule of Accounts Receivable	Accounts receivable consisted of the following:
		December 31,
		2014			2013
	Trade receivables	$	497,538		$	584,160
	Non-income tax receivables		75,083			94,069
	Other receivables		34,713			45,119
	Less: allowance for doubtful accounts		(6,268	)		(5,866	)
	Total	$	601,066		$	717,482

Inventories_Tables

Inventories (Tables)	12 Months Ended
	Dec. 31, 2014
Inventory Disclosure [Abstract]
Schedule of Inventories	Inventories consisted of the following:
		December 31,
		2014		2013
	Finished goods	$	235,949	$	252,602
	Raw materials and semi-finished goods		205,061		240,858
	Supplies		32,851		36,731
	Total	$	473,861	$	530,191

Property_Plant_and_Equipment_T

Property, Plant and Equipment (Tables)	12 Months Ended
	Dec. 31, 2014
Property, Plant and Equipment [Abstract]
Schedule of Property, Plant and Equipment	Property, plant and equipment consisted of the following:
			Estimated Useful		December 31,
			Lives (Years)		2014				2013
	Land		Not applicable		$	47,196			$	50,982
	Land and waterway improvements		20-Jan			13,139				13,603
	Buildings		Feb-40			55,693				58,447
	Machinery and equipment(1)		20-Jan			640,861				627,068
	Utility and supply lines		10-Jan			7,679				7,100
	Leasehold interests		Jan-45			45,759				50,009
	Other property		8-Jan			24,560				27,260
	Construction in process		Not applicable			46,193				55,753
	Property, plant and equipment					881,080				890,222
	Less: accumulated depreciation					(324,383	)			(283,795	)
	Property, plant and equipment, net				$	556,697			$	606,427
	-1	Approximately 94% of our machinery and equipment had a useful life of three to ten years as of December 31, 2014 and 2013.
Schedule of Other Items Related to Property Plant and Equipment
			Year Ended
			December 31,
			2014				2013				2012
	Depreciation expense		$	75,286			$	75,401			$	68,312
	Capitalized interest		$	4,192			$	3,142			$	6,178

Goodwill_and_Intangible_Assets1

Goodwill and Intangible Assets (Tables)	12 Months Ended
	Dec. 31, 2014
Goodwill and Intangible Assets Disclosure [Abstract]
Changes in Carrying Amount of Goodwill, by Segment	The following table shows changes in the carrying amount of goodwill, by segment, from December 31, 2012 to December 31, 2013 and from December 31, 2013 to December 31, 2014, respectively:
			Emulsion Polymers								Plastics								Total
			Latex				Synthetic				Styrenics				Engineered
							Rubber								Polymers
	Balance at December 31, 2012		$	14,280			$	9,780			$	8,691			$	3,352			$	36,103
	Divestiture (Note 3)			—				—				(383	)			—				(383	)
	Foreign currency impact			621				425				361				146				1,553
	Balance at December 31, 2013		$	14,901			$	10,205			$	8,669			$	3,498			$	37,273
	Purchase accounting adjustment (Note 16)*			664				455				404				156				1,679
	Foreign currency impact			(1,750	)			(1,199	)			(1,018	)			(411	)			(4,378	)
	Balance at December 31, 2014		$	13,815			$	9,461			$	8,055			$	3,243			$	34,574
	*	The purchase price adjustment for the year ended December 31, 2014 relates to the Company’s other postretirement benefit obligations provided to its employees in Brazil. Refer to Note 16 to the consolidated financial statements for a detailed discussion of this adjustment.
Schedule of Other Intangible Assets	The following table provides information regarding the Company’s other intangible assets as of December 31, 2014 and 2013, respectively:
							December 31, 2014												December 31, 2013
			Estimated				Gross				Accumulated				Net				Gross			Accumulated			Net
			Useful Life				Carrying				Amortization								Carrying			Amortization
			(Years)				Amount												Amount
	Developed technology			15			$	188,854			$	(56,782	)		$	132,072			$	210,546		$	(49,713	)	$	160,833
	Manufacturing Capacity Rights			6				23,095				(2,809	)			20,286				—			—			—
	Software			5				13,177				(6,441	)			6,736				11,034			(4,099	)		6,935
	Software in development			N/A				6,000				—				6,000				3,746			—			3,746
	Other			N/A				264				—				264				—			—			—
	Total						$	231,390			$	(66,032	)		$	165,358			$	225,326		$	(53,812	)	$	171,514
Estimated Amortization Expense for Next Five Years	The following table details the Company’s estimated amortization expense for the next five years, excluding any amortization expense related to software currently in development:
	Estimated Amortization Expense for the Next Five Years
	2015				2016				2017				2018				2019
		$19,353			$	18,788			$	17,952			$	17,252			$	17,000

Accounts_Payable_Tables

Accounts Payable (Tables)	12 Months Ended
	Dec. 31, 2014
Payables and Accruals [Abstract]
Schedule of Accounts Payable	Accounts payable consisted of the following:
		December 31,
		2014		2013
	Trade payables	$	383,297	$	462,304
	Other payables		51,395		46,789
	Total	$	434,692	$	509,093

Debt_Tables

Debt (Tables)	12 Months Ended
	Dec. 31, 2014
Debt Disclosure [Abstract]
Schedule of Debt	Debt consisted of the following:
		December 31,
		2014			2013
	Senior Secured Credit Facility
	Term Loans	$	—		$	—
	Revolving Facility		—			—
	Senior Notes		1,192,500			1,325,000
	Accounts Receivable Securitization Facility		—			—
	Other indebtedness		9,707			11,421
	Total debt		1,202,207			1,336,421
	Less: current portion		(7,559	)		(8,754	)
	Total long-term debt	$	1,194,648		$	1,327,667
Redemption Price as Percentage of Principal Amount to Applicable Date of Redemption	The Company may redeem all or part of the Senior Notes at any time prior to August 1, 2015 by paying a call premium, plus accrued and unpaid interest to the redemption date. The Company may redeem all or part of the Senior Notes at any time after August 1, 2015 at a redemption price equal to the percentage of principal amount set forth below plus accrued and unpaid interest, if any, on the notes redeemed, to the applicable date of redemption, if redeemed during the twelve-month period beginning on of the year indicated below:
	12-month period commencing August 1 in Year	Percentage
	2015		104.375	%
	2016		102.188	%
	2017 and thereafter		100	%

Foreign_Exchange_Forward_Contr1

Foreign Exchange Forward Contracts (Tables)	12 Months Ended
	Dec. 31, 2014
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Notional Amounts of Most Significant Net Foreign Exchange Hedge Positions Outstanding	The following table displays the notional amounts of the most significant net foreign exchange hedge positions outstanding as of December 31, 2014.
	Buy / (Sell)	December 31,
		2014
	Euro	$	239,341
	Chinese Yuan	$	(100,086	)
	Swiss Franc	$	35,438
	Indonesian Rupiah	$	(33,020	)
	British Pound	$	(9,910	)
Summary of Financial Assets and Liabilities Included in Consolidated Balance Sheets	The following tables summarize the financial assets and liabilities included in the consolidated balance sheets:
		December 31, 2014
	Description	Gross Amounts of			Gross Amounts of Offset			Net Amounts of Assets Presented
		Recognized			in the Consolidated			in the Consolidated
		Assets			Balance Sheet			Balance Sheet
	Foreign exchange forward contracts	$	2,037		$	(1,739	)	$	298
		December 31, 2014
	Description	Gross Amounts of			Gross Amounts of Offset			Net Amounts of Liabilities Presented
		Recognized			in the Consolidated			in the Consolidated
		Liabilities			Balance Sheet			Balance Sheet
	Foreign exchange forward contracts	$	6,589		$	(1,739	)	$	4,850

Fair_Value_Measurements_Tables

Fair Value Measurements (Tables)	12 Months Ended
	Dec. 31, 2014
Fair Value Disclosures [Abstract]
Schedule of Assets and Liabilities at Fair Value on Recurring Basis	The following table summarizes the basis used to measure certain assets and liabilities at fair value on a recurring basis in the consolidated balance sheets at December 31, 2014. As discussed in Note 11, there were no open foreign exchange forward contracts as of December 31, 2013, and as such, there were no balances to be recorded at fair value at that date.
		December 31, 2014
	Assets (Liabilities) at Fair Value	Quoted Prices in		Significant Other			Significant		Total
		Active Markets for		Observable Inputs			Unobservable
		Identical Items		(Level 2)			Inputs
		(Level 1)					(Level 3)
	Foreign exchange forward contracts—Assets	$	—	$	298		$	—	$	298
	Foreign exchange forward contracts—(Liabilities)		—		(4,850	)		—		(4,850	)
	Total fair value	$	—	$	(4,552	)	$	—	$	(4,552	)
Estimated Fair Value of Outstanding Debt Not Carried at Fair Value	The following table presents the estimated fair value of the Company’s outstanding debt not carried at fair value as of December 31, 2014 and 2013, respectively:
		As of		As of
		December 31, 2014		December 31, 2013
	Senior Notes (Level 2)	$	1,212,045	$	1,366,406
	Total fair value	$	1,212,045	$	1,366,406

Income_Taxes_Tables

Income Taxes (Tables)	12 Months Ended
	Dec. 31, 2014
Income Tax Disclosure [Abstract]
Income (Loss) before Income Taxes Earned within and outside the United States	Income (loss) before income taxes earned within and outside the United States is shown below:
			Year Ended
			December 31,
			2014			2013			2012
	United States		$	17,522		$	25,228		$	49,193
	Outside of the United States			(65,135	)		(25,597	)		(1,351	)
	Income (loss) before income taxes		$	(47,613	)	$	(369	)	$	47,842
Provision for (Benefit from) Income Taxes	The provision for (benefit from) income taxes is composed of:
			December 31, 2014									December 31, 2013						December 31, 2012
			Current			Deferred			Total			Current		Deferred		Total		Current		Deferred			Total
	U.S. federal		$	2,101		$	(2,536	)	$	(435	)	$	8,617	$	1,252	$	9,869	$	5,094	$	8,070		$	13,164
	U.S. state and other			295			3			298			820		70		890		229		1,174			1,403
	Non-U.S.			12,490			7,366			19,856			8,197		2,893		11,090		7,503		(4,510	)		2,993
	Total		$	14,886		$	4,833		$	19,719		$	17,634	$	4,215	$	21,849	$	12,826	$	4,734		$	17,560
Effective Tax Rate on Pre-tax Income Differs from the U.S. Statutory Rate	The effective tax rate on pre-tax income differs from the U.S. statutory rate due to the following:
			Year Ended December 31,
			2014			2013			2012
	Taxes at U.S. statutory rate(1)		$	(16,664	)	$	(129	)	$	16,745
	State and local income taxes			571			603			1,493
	Non U.S. statutory rates, including credits			899			(4,988	)		(5,185	)
	U.S. tax effect of foreign earnings and dividends			(2,112	)		(942	)		(2,890	)
	Unremitted earnings			(189	)		(157	)		3,087
	Change in valuation allowances			14,679			16,430			(8,780	)
	Uncertain tax positions			(2,818	)		(1,465	)		1,882
	Withholding taxes on interest and royalties			3,652			2,992			7,064
	U.S. manufacturing deduction			—			(229	)		(1,057	)
	Provision to return adjustments			260			3,814			(3,943	)
	Stock-based compensation			3,343			3,112			2,466
	Non-deductible interest			5,401			5,258			5,203
	Non-deductible other expenses			15,589	(2)		1,573			2,004
	Government subsidy income			—			(4,219	)		—
	Impact on foreign currency exchange			(2,643	)		71			291
	Other—net			(249	)		125			(820	)
	Total provision for income taxes		$	19,719		$	21,849		$	17,560
	Effective tax rate			(41	)%		(5,921	)%		37	%
	-1	The U.S. statutory rate has been used as management believes it is more meaningful to the Company.
	-2	Non-deductible other expenses in 2014 include the tax effect of fees incurred for the termination of the Latex JV Option Agreement with Dow and a portion of the fees incurred in connection with the termination of the Advisory Agreement with Bain Capital. See Note 18 for further discussion.
Deferred Income Taxes Reflect Temporary Differences Between the Valuation of Assets and Liabilities	Deferred income taxes reflect temporary differences between the valuation of assets and liabilities for financial and tax reporting:
			December 31,
			2014						2013
			Deferred			Deferred			Deferred			Deferred
			Tax			Tax			Tax			Tax
			Assets			Liabilities			Assets			Liabilities
	Tax loss and credit carry forwards		$	62,142		$	—		$	40,007		$	—
	Unremitted earnings			—			9,273			—			9,462
	Unconsolidated affiliates			11,761			—			12,257			—
	Other accruals and reserves			11,536			—			13,556			—
	Property, plant and equipment			—			42,715			—			45,314
	Goodwill and other intangible assets			15,791			—			23,452			—
	Deferred financing fees			6,366			—			6,973			—
	Employee benefits			41,186			—			31,858			—
				148,782			51,988			128,103			54,776
	Valuation allowance			(66,920	)		—			(50,404	)		—
	Total		$	81,862		$	51,988		$	77,699		$	54,776
Schedule of Reconciliation of Unrecognized Tax Benefits	For the years presented, a reconciliation of the beginning and ending amount of the unrecognized tax benefits is as follows:
	Balance as of December 31, 2011		$	25,431
	Increases related to current year tax positions			6,757
	Decreases related to prior year tax positions			(2,109	)
	Balance as of December 31, 2012		$	30,079
	Increases related to current year tax positions			1,225
	Decreases related to prior year tax positions			(4,405	)
	Balance as of December 31, 2013		$	26,899
	Increases related to current year tax positions			187
	Decreases related to prior year tax positions			(6,701	)
	Balance as of December 31, 2014		$	20,385

Commitments_and_Contingencies_

Commitments and Contingencies (Tables)	12 Months Ended
	Dec. 31, 2014
Commitments and Contingencies Disclosure [Abstract]
Schedule of Future Minimum Rental Payments under Operating Leases with Remaining Non-Cancelable Terms	Future minimum rental payments under operating leases with remaining non-cancelable terms in excess of one year are as follows:
	Year	Annual
		Commitment
	2015	$	8,040
	2016		5,510
	2017		3,159
	2018		2,780
	2019		2,778
	2020 and beyond		12,664
	Total	$	34,931
Schedule of Fixed and Determinable Portion of Obligation under Purchase Commitments	The following table presents the fixed and determinable portion of the obligation under the Company’s purchase commitments as of December 31, 2014 (in millions):
	Year	Annual
		Commitment
	2015	$	1,299
	2016		1,292
	2017		1,421
	2018		1,214
	2019		1,239
	Thereafter		1,205
	Total	$	7,670

Pension_Plans_and_Other_Postre1

Pension Plans and Other Postretirement Benefits (Tables)	12 Months Ended
	Dec. 31, 2014
Schedule of Net Periodic Benefit Costs for Pension and Other Postretirement Benefit Plans	The net periodic benefit costs for the pension and other postretirement benefit plans for the years ended December 31, 2014, 2013, and 2012 were as follows:
			Defined Benefit Pension Plans									Other Postretirement Benefit Plans
			December 31,									December 31,
			2014			2013			2012			2014			2013			2012
	Net periodic benefit cost
	Service cost		$	14,097		$	13,866		$	10,054		$	1,048	(6)	$	283		$	252
	Interest cost			7,687			6,482			6,475			1,189	(6)		262			275
	Expected return on plan assets			(2,427	)		(1,710	)		(2,251	)		—			—			—
	Amortization of prior service cost (credit)			(1,002	)		(989	)		142			102			—			—
	Amortization of net (gain) loss			2,557			3,093			(630	)		(45	)(6)		—			(9	)
	Settlement and curtailment (gain) loss			1,517	(1)		2,122	(2)		(247	)		(1,507	)(3)		—			—
	Net periodic benefit cost (income)		$	22,429		$	22,864		$	13,543		$	787		$	545		$	518
	Amounts recognized in other comprehensive income (loss)
	Net loss (gain)		$	56,318		$	6,170		$	65,303		$	1,263	(6)	$	(1,354	)	$	677
	Amortization of prior service (cost) credit			1,002			989			(142	)		(102	)		—			—
	Amortization of net gain (loss)			(2,557	)		(3,093	)		630			45	(6)		—			9
	Settlement and curtailment gain (loss)			(1,517	)		(2,122	)		247			(242	)		—			—
	Prior service cost (credit)			(12,706	)(4)		(12,992	)(5)		—			—			730			—
	Total recognized in other comprehensive income (loss)			40,540			(11,048	)		66,038			964			(624	)		686
	Net periodic benefit cost (income)			22,429			22,864			13,543			787			545			518
	Total recognized in net periodic benefit cost and other comprehensive income (loss)		$	62,969		$	11,816		$	79,581		$	1,751		$	(79	)	$	1,204
	-1	This amount represents settlement losses from one of the Company’s defined benefit plans in Switzerland due to the termination of certain employees during the year, which resulted in a loss recognized in the year ended December 31, 2014 due to a charge against the unamortized net loss recorded in other comprehensive income.
	-2	This amount represents a curtailment loss from one of the Company’s defined benefit plans in Germany due to the reduction or cessation of benefit accruals for certain employees’ future services. The adjustment in the benefit obligation from the curtailment resulted in a loss recognized during the year ended December 31, 2013 due to a charge against the unamortized net loss recorded in other comprehensive income.
	-3	This amount represents a curtailment gain from the Company’s other postretirement benefit plan in The Netherlands, due to the cessation of retiree medical benefit accruals effective January 1, 2015.
	-4	This adjustment was made to the Company’s pension plan in The Netherlands to reflect the introduction of a salary cap and lower accrual rate on pension benefits as a result of tax law changes effective January 1, 2015. The impact of the change resulted in an adjustment to prior service credit in other comprehensive income as of December 31, 2014, which will be amortized to net periodic benefit cost over the estimated remaining service period of the employees.
	-5	This is primarily related to the transfer of all remaining employees who were previously participants in the Dow Plans in Switzerland and The Netherlands to Company Successor Plans effective January 1, 2013, as discussed above.
	-6	These amounts include the prior period net periodic cost and other comprehensive income components of the postretirement benefits in Brazil recognized during 2014, as discussed above.
Schedule of Changes in Pension Benefit Obligations and Fair Value of Plan Assets and Funded Status of All Significant Plans	The changes in the pension benefit obligations and the fair value of plan assets and the funded status of all significant plans for the year ended December 31, 2014 and 2013 were as follows:
			Defined Benefit						Other Postretirement
			Pension Plans						Benefit Plans
			December 31,						December 31,
			2014			2013			2014			2013
	Change in projected benefit obligations
	Benefit obligation at beginning of period		$	237,914		$	231,437		$	6,660		$	6,666
	Service cost			14,097			13,866			1,048			283
	Interest cost			7,687			6,482			1,189			262
	Plan participants’ contributions			2,385			1,831			—			—
	Actuarial changes in assumptions and experience			72,470			(10,376	)		1,263			(1,354	)
	Benefits paid			(900	)		(3,362	)		—			—
	Benefit payments by employer			(1,428	)		(1,367	)		—			—
	Acquisitions/Divestiture			—			(333	)		1,679	-7		—
	Plan amendments			(12,706	)		(12,992	)		—			730
	Curtailments			—			2,124			(1,743	)		—
	Settlements			(6,783	)		(1,633	)		—			—
	Other			614			4,576			—			—
	Currency impact			(33,259	)		7,661			(1,019	)		73
	Benefit obligation at end of period		$	280,091		$	237,914		$	9,077		$	6,660
	Change in plan assets
	Fair value of plan assets at beginning of period		$	81,347		$	72,350		$	—		$	—
	Actual return on plan assets(8)			18,580			(12,713	)		—			—
	Settlements			(6,783	)		(1,633	)		—			—
	Employer contributions			9,446			17,665			—			—
	Plan participants’ contributions			2,385			1,831			—			—
	Benefits paid			(2,239	)		(3,609	)		—			—
	Other			614			4,576			—			—
	Currency impact			(10,780	)		2,880			—			—
	Fair value of plan assets at end of period			92,570			81,347			—			—
	Funded status at end of period		$	(187,521	)	$	(156,567	)	$	(9,077	)	$	(6,660	)
	-7	The amount represents an adjustment to the original purchase price allocation from the Acquisition as a portion of the postretirement benefits obligation recorded in Brazil was assumed from Dow.
	-8	The fair values of certain plan assets as of December 31, 2014 and 2013 were determined using cash surrender values provided under the insurance contracts which took effect on January 1, 2013. The resulting change in the fair value of plan assets due to the use of cash surrender values was included as “return on plan assets”.
Schedule of Net Amounts Recognized in Balance Sheet	The net amounts recognized in the balance sheet as of December 31, 2014 and 2013 were as follows:
			Defined Benefit						Other Postretirement
			Pension Plans						Benefit Plans
			December 31,						December 31,
			2014			2013			2014			2013
	Net amounts recognized in the balance sheets at December 31
	Current liabilities		$	(1,604	)	$	(1,599	)	$	(70	)	$	(26	)
	Noncurrent liabilities			(185,917	)		(154,968	)		(9,007	)		(6,634	)
	Net amounts recognized in the balance sheet		$	(187,521	)	$	(156,567	)	$	(9,077	)	$	(6,660	)
	Accumulated benefit obligation at the end of the period		$	220,277		$	178,987		$	9,077		$	6,660
	Pretax amounts recognized in AOCI at December 31:
	Net prior service cost (credit)		$	(21,386	)	$	(9,682	)	$	628		$	730
	Net gain (loss)			97,127			44,883			(266	)		(1,332	)
	Total at end of period		$	75,741		$	35,201		$	362		$	(602	)
Schedule of Estimated Future Benefit Payments, Reflecting Expected Future Service	The estimated future benefit payments, reflecting expected future service, as appropriate, are presented in the following table:
			2015			2016			2017			2018			2019			2020			Total
																		through
																		2024
	Defined benefit pension plans		$	3,635		$	4,193		$	4,402		$	4,819		$	4,786		$	35,747		$	57,582
	Other postretirement benefit plans			72			105			145			195			260			2,652			3,429
	Total		$	3,707		$	4,298		$	4,547		$	5,014		$	5,046		$	38,399		$	61,011
Schedule of Pension Plans with Projected and Accumulated Benefit Obligations in Excess of Fair Value of Plan Assets	The following information relates to pension plans with projected and accumulated benefit obligations in excess of the fair value of plan assets at December 31, 2014 and December 31, 2013:
	Projected Benefit Obligation		December 31,
	Exceeds the Fair Value of Plan Assets		2014			2013
	Projected benefit obligations		$	280,091		$	237,914
	Fair value of plan assets		$	92,570		$	81,347
	Accumulated Benefit Obligation		December 31,
	Exceeds the Fair Value of Plan Assets		2014			2013
	Accumulated benefit obligations		$	177,496		$	152,056
	Fair value of plan assets		$	44,382		$	50,004
Defined Benefit Pension Plans [Member]
Schedule of Weighted-average Assumptions on Pension Plan Obligations, Other Postretirement Benefit ("OPEB") and Net Periodic Benefit Costs	The weighted-average assumptions used to determine pension plan obligations and net periodic benefit costs are provided below:
			Pension Plan Obligations									Net Periodic Benefit Costs
			December 31,									December 31,
			2014			2013			2012			2014			2013			2012
	Discount rate			2.01	%		3.3	%		3.05	%		3.3	%		3.05	%		4.49	%
	Rate of increase in future compensation levels			2.71	%		2.86	%		2.69	%		2.86	%		2.69	%		2.64	%
	Expected long-term rate of return on plan assets			N/A			N/A			N/A			2.83	%		2.44	%		4.09	%
Other Postretirement Benefit Plans [Member]
Schedule of Weighted-average Assumptions on Pension Plan Obligations, Other Postretirement Benefit ("OPEB") and Net Periodic Benefit Costs	The weighted-average assumptions used to determine other postretirement benefit (“OPEB”) obligations and net periodic benefit costs are provided below:
			OPEB Obligations									Net Periodic Benefit Costs
			December 31,									December 31,
			2014			2013			2012			2014			2013			2012
	Discount rate			6.4	%		4.72	%		3.93	%		6.69	%		3.93	%		5.08	%
	Initial health care cost trend rate			8.05	%		6.67	%		7	%		6.67	%		7	%		7.33	%
	Ultimate health care cost trend rate			5.43	%		5	%		5	%		5	%		5	%		5	%
	Year ultimate trend rate to be reached			2021			2019			2019			2019			2019			2019
Supplemental Employee Retirement Plan [Member]
Schedule of Estimated Future Benefit Payments, Reflecting Expected Future Service	Based on the Company’s current estimates, the estimated future benefit payments under this plan, reflecting expected future service, as appropriate, are presented in the following table:
			2015			2016			2017			2018			2019			Thereafter			Total
	Supplemental employee retirement plan		$	—		$	—		$	13,562		$	—		$	—		$	—		$	13,562

StockBased_Compensation_Tables

Stock-Based Compensation (Tables)	12 Months Ended
	Dec. 31, 2014
Summary of Weighted Average Assumptions Used for Grants	The following are the weighted average assumptions used for grants during the years ended December 31, 2013, and 2012, respectively, and for valuation of the modified time-based awards in June 2014:
			Year Ended December 31,
			2014			2013			2012
	Dividend yield			0	%		0	%		0	%
	Expected volatility			65	%		73.25	%		75.71	%
	Risk-free interest rate			1.54	%		0.52	%		0.58	%
	Expected term (in years) for performance-based shares			N/A			3.85			3.85
	Expected term (in years) for time-based and modified time-based shares			4.5			9.21			10.32
Summary of Stock-based Compensation Expense	The amount of stock-based compensation expense recorded within “Selling, general and administrative expenses” in the consolidated statements of operations for the years ended December 31, 2014, 2013, and 2012, respectively, was as follows:
			Year Ended December 31,
			2014			2013			2012
	Time-based Restricted Stock Awards		$	7,037		$	8,346		$	4,192
	Modified Time-based Restricted Stock Awards			2,469			—			—
	Restricted Stock Units- under 2014 Omnibus Plan			100			—			—
	Liability awards			50			46			861
	Management Retention Awards			896			1,416			2,275
	Parent Company Restricted Stock Sales			—			171			—
	Total stock-based compensation expense		$	10,552		$	9,979		$	7,328
Time-based Restricted Stock Awards [Member]
Summary of Parent's Modified Time-based Restricted Stock Awards	The following table summarizes the activity in the Parent’s time-based restricted stock awards during the year ended December 31, 2014:
	Time-based restricted stock		Shares			Weighted-Average
						Grant Date
						Fair Value per Share
	Unvested, December 31, 2013			131,190		$	164.97
	Granted			—			—
	Vested			(66,143	)		163.03
	Forfeited			(2,499	)		135.21
	Unvested, December 31, 2014			62,548		$	172.64
Summary of Weighted-average Grant Date Fair Value per Share of Modified Time-based Restricted Stock Awards Granted Total and Fair Value of Awards Vested	The following table summarizes the weighted-average grant date fair value per share of time-based restricted stock awards granted during the years ended December 31, 2014, 2013, and 2012, as well as the total fair value of awards vested during those periods:
			Time-Based Restricted Stock
			Weighted-Average Grant Date			Total Fair Value
			Fair Value per Share			of Awards Vested
			of Grants during Period			during Period
	Year Ended December 31, 2014			N/A	(1)	$	10,783
	Year Ended December 31, 2013		$	155.4		$	6,795
	Year Ended December 31, 2012		$	204.32		$	9,100
		-1	There were no grants of time-based restricted stock awards by the Parent during the year-ended December 31, 2014.
Modified Time-based Restricted Stock Awards [Member]
Summary of Parent's Modified Time-based Restricted Stock Awards	The following table summarizes the activity in the Parent’s modified time-based restricted stock awards during the year ended December 31, 2014:
	Modified time-based restricted stock		Shares			Weighted-Average
						Grant Date
						Fair Value per Share
	Unvested, December 31, 2013			118,123		$	131.83
	Granted*			—			—
	Vested*			—			—
	Forfeited*			(10,068	)		97.45
	Unvested, June 10, 2014*			108,055		$	115.3
	Granted			—			—
	Vested			(775	)		115.3
	Forfeited			—			—
	Unvested, December 31, 2014			107,280		$	115.3
	*	Represents activity and balances during the current year prior to the June 2014 modification discussed above. Note that the fair value of all unvested awards was adjusted to reflect the updated fair value per share upon modification.
Summary of Weighted-average Grant Date Fair Value per Share of Modified Time-based Restricted Stock Awards Granted Total and Fair Value of Awards Vested	The following table summarizes the weighted-average grant date fair value per share of modified time-based restricted stock awards (named performance-based awards, prior to June 2014 modification) granted during the years ended December 31, 2014, 2013, and 2012, as well as the total fair value of awards vested during those periods:
			Modified Time-Based Restricted Stock
			Weighted-Average Grant Date			Total Fair Value
			Fair Value per Share			of Awards Vested
			of Grants during Period			during Period
	Year Ended December 31, 2014			N/A	(1)	$	—
	Year Ended December 31, 2013		$	114.5		$	—
	Year Ended December 31, 2012		$	170.43		$	—
	-1	There were no grants of performance-based restricted stock awards (or modified time-based restricted stock awards) by the Parent during the year-ended December 31, 2014.

Segments_Tables

Segments (Tables)	12 Months Ended
	Dec. 31, 2014
Segment Reporting [Abstract]
Reconciliation of Segment Reporting to Consolidated
			Emulsion Polymers						Plastics
	For the year ended		Latex			Synthetic			Styrenics			Engineered			Corporate		Total
						Rubber						Polymers			Unallocated
	December 31, 2014
	Sales to external customers		$	1,261,137		$	633,983		$	2,197,067		$	1,035,774		$	—	$	5,127,961
	Equity in earnings (losses) of unconsolidated affiliates			—			—			50,269			(2,520	)		—		47,749
	EBITDA(1)			93,962			136,985			87,496			5,754
	Investment in unconsolidated affiliates			—			—			133,533			34,125			—		167,658
	Depreciation and amortization			26,954			32,900			29,456			10,351			4,045		103,706
	December 31, 2013
	Sales to external customers		$	1,341,424		$	622,059		$	2,305,434		$	1,038,497		$	—	$	5,307,414
	Equity in earnings (losses) of unconsolidated affiliates			—			—			39,447			(309	)		—		39,138
	EBITDA(1)			95,398			113,459			160,724			(9,058	)
	Investment in unconsolidated affiliates			—			—			118,263			37,624			—		155,887
	Depreciation and amortization			26,092			28,937			28,956			7,375			3,836		95,196
	December 31, 2012
	Sales to external customers		$	1,545,064		$	701,962		$	2,149,202		$	1,055,681		$	—	$	5,451,909
	Equity in earnings of unconsolidated affiliates			—			—			27,026			114			—		27,140
	EBITDA(1)			125,473			111,051			82,947			31,503
	Investment in unconsolidated affiliates			—			—			101,316			38,988			—		140,304
	Depreciation and amortization			27,037			18,080			30,618			6,936			2,933		85,604
	-1	Reconciliation of EBITDA to net income (loss) is as follows:
			Year Ended December 31,
			2014			2013			2012
	Total segment EBITDA		$	324,197		$	360,523		$	350,974
	Corporate unallocated			(143,181	)		(133,658	)		(107,557	)
	Less: Interest expense, net			124,923			132,038			109,971
	Less: Provision for income taxes			19,719			21,849			17,560
	Less: Depreciation and amortization			103,706			95,196			85,604
	Net income (loss)		$	(67,332	)	$	(22,218	)	$	30,282
Schedule of Sales Attributed to Geographical Areas Based on Location of Sales and Long-lived Assets Attributed to Geographical Areas Based on Asset Location	Sales are attributed to geographic areas based on the location where sales originated; long-lived assets are attributed to geographic areas based on asset location.
			Year Ended December 31,
			2014			2013			2012
	United States
	Sales to external customers		$	663,425		$	665,801		$	683,570
	Long-lived assets			65,329			73,932			84,992
	Europe
	Sales to external customers		$	3,066,581		$	3,186,659		$	3,324,064
	Long-lived assets			383,311			431,494			449,834
	Asia-Pacific
	Sales to external customers		$	1,196,163		$	1,214,093		$	1,200,747
	Long-lived assets			99,654			92,691			91,885
	Rest of World
	Sales to external customers		$	201,792		$	240,861		$	243,528
	Long-lived assets			8,403			8,310			6,561
	Total
	Sales to external customers(1)		$	5,127,961		$	5,307,414		$	5,451,909
	Long-lived assets(2)(3)			556,697			606,427			633,272
	-1	Sales to external customers in China represented approximately 8%, 8% and 8% of the total for the years ended December 31, 2014, 2013, and 2012, respectively. Sales to external customers in Germany represented approximately 12%, 11% and 10% of the total for the years ended December 31, 2014, 2013, and 2012, respectively. Sales to external customers in Hong Kong represented approximately 11%, 10% and 9% of the total for the years ended December 31, 2014, 2013, and 2012, respectively.
	-2	Long-lived assets in China represented approximately 6%, 4%, and 4% of the total for the years ended December 31, 2014, 2013, and 2012, respectively. Long-lived assets in Germany represented approximately 43%, 44%, and 45% of the total for the years ended December 31, 2014, 2013, and 2012, respectively. Long-lived assets in The Netherlands represented approximately 13%, 13%, and 13% of the total for the years ended December 31, 2014, 2013, and 2012, respectively.
	-3	Long-lived assets consist of property, plant and equipment, net.

Restructuring_Tables

Restructuring (Tables)	12 Months Ended
	Dec. 31, 2014
Restructuring and Related Activities [Abstract]
Rollforward of Liability Balances	The following tables provide a rollforward of the liability balances associated with the Altona plant shutdown for the years ended December 31, 2013 and 2014, respectively:
			Balance at		Expenses		Deductions(1)			Balance at
			December 31, 2013							December 31, 2014
	Employee termination benefit charges		$	1,408	$	302	$	(1,710	)	$	—
	Contract termination charges			3,388		1,409		(2,669	)		2,128
	Other(2)			26		1,277		(1,303	)		—
	Total		$	4,822	$	2,988	$	(5,682	)	$	2,128
			Balance at		Expenses		Deductions(1)			Balance at
			December 31, 2012							December 31, 2013
	Employee termination benefit charges		$	—	$	2,589	$	(1,181	)	$	1,408
	Contract termination charges			—		3,934		(546	)		3,388
	Other(2)			—		215		(189	)		26
	Total		$	—	$	6,738	$	(1,916	)	$	4,822
	-1	Includes primarily payments made against the existing accrual, as well as immaterial impacts of foreign currency remeasurement.
	-2	Includes demolition and decommissioning charges incurred, primarily related to labor and third party service costs.

Accumulated_Other_Comprehensiv1

Accumulated Other Comprehensive Income (Loss) (Tables)	12 Months Ended
	Dec. 31, 2014
Equity [Abstract]
Components of Accumulated Other Comprehensive Income (Loss), Net of Income Taxes	The components of accumulated other comprehensive income (loss), net of income taxes, consisted of:
		Currency			Employee			Total
		Translation			Benefits,
		Adjustment, Net			Net
	Balance at December 31, 2011	$	38,935		$	14,253		$	53,188
	Other comprehensive income (loss)		23,872			(52,487	)		(28,615	)
	Balance at December 31, 2012		62,807			(38,234	)		24,573
	Other comprehensive income (loss)		53,339			10,466			63,805
	Balance at December 31, 2013		116,146			(27,768	)		88,378
	Other comprehensive income (loss)		(133,901	)		(29,694	)		(163,595	)
	Balance at December 31, 2014	$	(17,755	)	$	(57,462	)	$	(75,217	)

Earnings_Loss_Per_Share_Tables

Earnings (Loss) Per Share (Tables)	12 Months Ended
	Dec. 31, 2014
Earnings Per Share [Abstract]
Schedule of Earnings (Loss) per Share Basic and Diluted	The following table presents EPS and diluted EPS for the years ended December 31, 2014, 2013 and 2012, respectively. These balances have been retroactively adjusted to give effect to the Company’s 1-for-436.69219 reverse stock split declared effective on May 30, 2014, discussed in Note 12.
			Year Ended
			December 31,
	(in thousands, except per share data)		2014			2013			2012
	Earnings (losses):
	Net income (loss) available to common shareholders		$	(67,332	)	$	(22,218	)	$	30,282
	Shares:
	Weighted average common shares outstanding			43,476			37,270			16,123
	Dilutive effect of restricted stock units*			—			—			—
	Diluted weighted average shares outstanding			43,476			37,270			16,123
	Income (loss) per share:
	Income (loss) per share—basic and diluted		$	(1.55	)	$	(0.60	)	$	1.88
	*	Refer to Note 17 for discussion of restricted stock units granted in June 2014 to certain Company directors. As net loss was reported for the year ended December 31, 2014, potentially dilutive awards have not been included within the calculation of diluted EPS, as they would have an anti-dilutive effect.

Selected_Quarterly_Financial_D1

Selected Quarterly Financial Data (Tables)	12 Months Ended
	Dec. 31, 2014
Quarterly Financial Information Disclosure [Abstract]
Schedule of Selected Quarterly Financial Data
			First			Second			Third			Fourth
			Quarter			Quarter			Quarter			Quarter
	2014
	Net sales		$	1,359,132		$	1,340,935		$	1,305,493		$	1,122,401
	Gross profit			98,629			92,410			68,236			38,046
	Equity in earnings of unconsolidated affiliates			14,950			5,378			9,267			18,154
	Operating Income			63,549			23,580	(1)		29,390			(4,035	)
	Income (loss) before income taxes			29,836			(39,171	)(1)		(6,460	)(2)		(31,818	)
	Net income (loss)			17,086			(44,621	)(1)		(10,110	)(2)		(29,687	)
	Income (loss) per share- basic and diluted		$	0.46		$	(1.15	)(1)	$	(0.21	)(2)	$	(0.61	)
	2013
	Net sales		$	1,391,585		$	1,361,759		$	1,308,959		$	1,245,111
	Gross profit			80,803			65,509			96,517			115,181
	Equity in earnings of unconsolidated affiliates			2,799			8,929			15,215			12,195
	Operating Income			37,142			19,664			57,960			65,524
	Income (loss) before income taxes			(9,778	)(3)		(25,914	)		10,937			24,386
	Net income (loss)			(9,678	)(3)		(28,064	)		4,936			10,588
	Income (loss) per share- basic and diluted		$	(0.26	)(3)	$	(0.75	)	$	0.13		$	0.28
	-1	Includes a charge of $23.3 million for fees paid to Bain Capital incurred in connection with the termination of the Advisory Agreement, pursuant to its terms, upon consummation of the Company’s IPO in June 2014. Also includes a one-time $32.5 million termination payment made to Dow in connection with the termination of our Latex JV Option Agreement. See Note 18 to the consolidated financial statements for further discussion of these items.
	-2	Includes $7.4 million loss on extinguishment of debt related to the July 2014 redemption of $132.5 million in aggregate principal amount of the Senior Notes.
	-3	Includes $20.7 million loss on extinguishment of debt related to the January 2013 amendment of our Senior Secured Credit Facility and repayment of Term Loans.

Supplemental_Guarantor_Condens1

Supplemental Guarantor Condensed Consolidating Financial Statements (Tables)	12 Months Ended
	Dec. 31, 2014
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Supplemental Condensed Consolidating Balance Sheet	SUPPLEMENTAL CONDENSED CONSOLIDATING BALANCE SHEET
	(In thousands)
		December 31, 2014
		Parent			Issuers			Guarantor			Non-Guarantor			Eliminations			Consolidated
		Guarantor						Subsidiaries			Subsidiaries
	Assets
	Current assets
	Cash and cash equivalents	$	904		$	2,653		$	166,106		$	51,123		$	—		$	220,786
	Accounts receivable, net of allowance		—			62			207,465			393,539			—			601,066
	Intercompany receivables		55			493,090			1,369,837			101,716			(1,964,698	)		—
	Inventories		—			—			381,797			99,709			(7,645	)		473,861
	Deferred income tax assets		—			—			5,382			6,404			—			11,786
	Other current assets		—			148			6,476			8,540			—			15,164
	Total current assets		959			495,953			2,137,063			661,031			(1,972,343	)		1,322,663
	Investments in unconsolidated affiliates		—			—			167,658			—			—			167,658
	Property, plant and equipment, net		—			—			426,905			129,792			—			556,697
	Other assets
	Goodwill		—			—			34,574			—			—			34,574
	Other intangible assets, net		—			—			164,020			1,338			—			165,358
	Investments in subsidiaries		327,100			1,327,675			595,755			—			(2,250,530	)		—
	Intercompany notes receivable—noncurrent		—			1,323,401			15,664			—			(1,339,065	)		—
	Deferred income tax assets—noncurrent		—			—			43,676			3,136			—			46,812
	Deferred charges and other assets		—			36,899			23,398			718			1,339			62,354
	Total other assets		327,100			2,687,975			877,087			5,192			(3,588,256	)		309,098
	Total assets	$	328,059		$	3,183,928		$	3,608,713		$	796,015		$	(5,560,599	)	$	2,356,116
	Liabilities and shareholders’ equity
	Current liabilities
	Short-term borrowings	$	—		$	—		$	—		$	7,559		$	—		$	7,559
	Accounts payable		46			2,323			366,882			65,441			—			434,692
	Intercompany payables		6,944			888,660			522,930			546,150			(1,964,684	)		—
	Income taxes payable		—			—			8,864			549			—			9,413
	Deferred income tax liabilities		—			—			1,171			242			—			1,413
	Accrued expenses and other current liabilities		204			52,001			55,412			13,311			—			120,928
	Total current liabilities		7,194			942,984			955,259			633,252			(1,964,684	)		574,005
	Noncurrent liabilities
	Long-term debt		—			1,192,500			2,148			—			—			1,194,648
	Intercompany notes payable—noncurrent		—			—			1,296,121			42,944			(1,339,065	)		—
	Deferred income tax liabilities—noncurrent		—			2,300			16,145			8,866			—			27,311
	Other noncurrent obligations		—			—			226,708			12,579			—			239,287
	Total noncurrent liabilities		—			1,194,800			1,541,122			64,389			(1,339,065	)		1,461,246
	Commitments and contingencies (Note 15)
	Shareholders’ equity		320,865			1,046,144			1,112,332			98,374			(2,256,850	)		320,865
	Total liabilities and shareholders’ equity	$	328,059		$	3,183,928		$	3,608,713		$	796,015		$	(5,560,599	)	$	2,356,116
	SUPPLEMENTAL CONDENSED CONSOLIDATING BALANCE SHEET
	(In thousands)
		December 31, 2013
		Parent			Issuers			Guarantor			Non-Guarantor			Eliminations			Consolidated
		Guarantor						Subsidiaries			Subsidiaries
	Assets
	Current assets
	Cash and cash equivalents	$	2		$	954		$	154,770		$	40,777		$	—		$	196,503
	Accounts receivable, net of allowance		—			—			272,745			444,739			(2	)		717,482
	Intercompany receivables		—			554,795			1,242,405			93,841			(1,891,041	)		—
	Inventories		—			—			439,952			93,019			(2,780	)		530,191
	Deferred income tax assets		—			—			5,077			4,743			—			9,820
	Other current assets		—			3,954			4,386			14,410			—			22,750
	Total current assets		2			559,703			2,119,335			691,529			(1,893,823	)		1,476,746
	Investments in unconsolidated affiliates		—			—			155,887			—			—			155,887
	Property, plant and equipment, net		—			—			476,137			130,290			—			606,427
	Other assets
	Goodwill		—			—			37,273			—			—			37,273
	Other intangible assets, net		—			—			171,352			162			—			171,514
	Investments in subsidiaries		343,429			1,232,608			615,153			—			(2,191,190	)		—
	Intercompany notes receivable—noncurrent		—			1,359,637			17,739			—			(1,377,376	)		—
Deferred income tax assets—noncurrent		—			—			36,260			6,678			—			42,938
Deferred charges and other assets		—			48,801			33,607			990			598			83,996
Total other assets		343,429			2,641,046			911,384			7,830			(3,567,968	)		335,721
Total assets	$	343,431		$	3,200,749		$	3,662,743		$	829,649		$	(5,461,791	)	$	2,574,781
Liabilities and shareholder’s equity
Current liabilities
Short-term borrowings	$	—		$	3,646		$	—		$	5,108		$	—		$	8,754
Accounts payable		—			2,570			436,147			70,378			(2	)		509,093
Intercompany payables		158			763,022			550,741			576,354			(1,890,275	)		—
Income taxes payable		—			—			9,407			276			—			9,683
Deferred income tax liabilities		—			—			784			2,119			—			2,903
Accrued expenses and other current liabilities		71			58,977			66,061			11,020			—			136,129
Total current liabilities		229			828,215			1,063,140			665,255			(1,890,277	)		666,562
Noncurrent liabilities
Long-term debt		—			1,325,000			2,667			—			—			1,327,667
Intercompany notes payable—noncurrent		—			—			1,347,773			29,602			(1,377,375	)		—
Deferred income tax liabilities—noncurrent		—			1,600			17,115			8,217			—			26,932
Other noncurrent obligations		—			—			198,479			11,939			—			210,418
Total noncurrent liabilities		—			1,326,600			1,566,034			49,758			(1,377,375	)		1,565,017
Commitments and contingencies (Note 15)
Shareholder’s equity		343,202			1,045,934			1,033,569			114,636			(2,194,139	)		343,202
Total liabilities and shareholder’s equity	$	343,431		$	3,200,749		$	3,662,743		$	829,649		$	(5,461,791	)	$	2,574,781
Supplemental Condensed Consolidating Statement of Comprehensive Income (Loss)	SUPPLEMENTAL CONDENSED CONSOLIDATING STATEMENT OF COMPREHENSIVE INCOME (LOSS)
	(In thousands)
		Year Ended December 31, 2014
		Parent			Issuers			Guarantor			Non-			Eliminations			Consolidated
		Guarantor						Subsidiaries			Guarantor
											Subsidiaries
	Net sales	$	—		$	—		$	4,684,218		$	1,366,437		$	(922,694	)	$	5,127,961
	Cost of sales		—			560			4,425,078			1,322,771			(917,769	)		4,830,640
	Gross profit		—			(560	)		259,140			43,666			(4,925	)		297,321
	Selling, general and administrative expenses		11,822			18,405			180,730			21,629			—			232,586
	Equity in earnings of unconsolidated affiliates		—			—			47,749			—			—			47,749
	Operating income (loss)		(11,822	)		(18,965	)		126,159			22,037			(4,925	)		112,484
	Interest expense, net		—			120,910			1,535			2,478			—			124,923
	Intercompany interest expense (income), net		12			(81,551	)		69,902			11,609			28			—
	Loss on extinguishment of long-term debt		—			7,390			—			—			—			7,390
	Other expense (income), net		6,330			17,742			(3,323	)		7,052			(17	)		27,784
	Equity in loss (earnings) of subsidiaries		49,132			(59,281	)		32,878			—			(22,729	)		—
	Income (loss) before income taxes		(67,296	)		(24,175	)		25,167			898			17,793			(47,613	)
	Provision for (benefit from) income taxes		36			1,409			15,004			4,011			(741	)		19,719
	Net income (loss)	$	(67,332	)	$	(25,584	)	$	10,163		$	(3,113	)	$	18,534		$	(67,332	)
	Comprehensive income (loss)	$	(230,927	)	$	(189,179	)	$	(150,388	)	$	(6,157	)	$	345,724		$	(230,927	)
		Year Ended December 31, 2013
		Parent			Issuers			Guarantor			Non-			Eliminations			Consolidated
		Guarantor						Subsidiaries			Guarantor
											Subsidiaries
	Net sales	$	—		$	—		$	4,793,183		$	1,476,538		$	(962,307	)	$	5,307,414
	Cost of sales		—			996			4,485,470			1,427,391			(964,453	)		4,949,404
	Gross profit		—			(996	)		307,713			49,147			2,146			358,010
	Selling, general and administrative expenses		10,073			3,981			181,756			21,048			—			216,858
	Equity in earnings of unconsolidated affiliates		—			—			39,138			—			—			39,138
	Operating income (loss)		(10,073	)		(4,977	)		165,095			28,099			2,146			180,290
	Interest expense, net		—			125,711			3,656			2,671			—			132,038
	Intercompany interest expense (income), net		7			(88,851	)		76,042			12,803			(1	)		—
	Loss on extinguishment of long-term debt		—			20,744			—			—			—			20,744
	Other expense (income), net		6			(32,325	)		39,534			20,647			15			27,877
	Equity in loss (earnings) of subsidiaries		12,128			(44,373	)		(3,346	)		—			35,591			—
	Income (loss) before income taxes		(22,214	)		14,117			49,209			(8,022	)		(33,459	)		(369	)
	Provision for (benefit from) income taxes		4			1,735			16,964			2,593			553			21,849
	Net income (loss)	$	(22,218	)	$	12,382		$	32,245		$	(10,615	)	$	(34,012	)	$	(22,218	)
	Comprehensive income (loss)	$	41,587		$	76,187		$	91,240		$	(5,805	)	$	(161,622	)	$	41,587
	SUPPLEMENTAL CONDENSED CONSOLIDATING STATEMENT OF COMPREHENSIVE INCOME (LOSS)
	(In thousands)
		Year Ended December 31, 2012
		Parent			Issuers			Guarantor			Non-			Eliminations			Consolidated
		Guarantor						Subsidiaries			Guarantor
											Subsidiaries
	Net sales	$	—		$	—		$	4,947,970		$	1,613,401		$	(1,109,462	)	$	5,451,909
	Cost of sales		—			279			4,691,834			1,532,264			(1,109,189	)		5,115,188
	Gross profit		—			(279	)		256,136			81,137			(273	)		336,721
	Selling, general and administrative expenses		7,374			3,994			147,454			23,247			—			182,069
	Equity in earnings of unconsolidated affiliates		—			—			27,140			—			—			27,140
	Operating income (loss)		(7,374	)		(4,273	)		135,822			57,890			(273	)		181,792
	Interest expense, net		—			104,069			917			4,985			—			109,971
	Intercompany interest expense (income), net		1			(88,245	)		76,510			11,782			(48	)		—
	Other expense (income), net		4			(20,515	)		21,376			23,125			(11	)		23,979
	Equity in loss (earnings) of subsidiaries		(37,661	)		(53,200	)		(75,950	)		—			166,811			—
	Income (loss) before income taxes		30,282			53,618			112,969			17,998			(167,025	)		47,842
	Provision for (benefit from) income taxes		—			(808	)		22,159			(3,739	)		(52	)		17,560
	Net income (loss)	$	30,282		$	54,426		$	90,810		$	21,737		$	(166,973	)	$	30,282
	Comprehensive income (loss)	$	1,667		$	25,811		$	59,111		$	24,821		$	(109,743	)	$	1,667
Supplemental Condensed Consolidating Statement of Cash Flows	SUPPLEMENTAL CONDENSED CONSOLIDATING STATEMENT OF CASH FLOWS
	(In thousands)
		Year Ended December 31, 2014
		Parent			Issuers			Guarantor			Non-			Eliminations			Consolidated
		Guarantor						Subsidiaries			Guarantor
											Subsidiaries
	Cash flows from operating activities
	Cash provided by (used in) operating activities	$	(1,079	)	$	(58,667	)	$	107,137		$	81,641		$	(11,811	)	$	117,221
	Cash flows from investing activities
	Capital expenditures		—			—			(85,021	)		(13,585	)		—			(98,606	)
	Proceeds from the sale of businesses and other assets		—			—			—			6,257			—			6,257
	Payment for working capital adjustment from sale of business		—			—			(700	)		—			—			(700	)
	Distributions from unconsolidated affiliates		—			—			978			—			—			978
	Investments in subsidiaries		(196,400	)		(199,400	)		(196,626	)		—			592,426			—
	Intercompany investing activities		—			2,462			(181,036	)		—			178,574			—
	(Increase) / decrease in restricted cash		—			—			(533	)		—			—			(533	)
	Cash provided by (used in) investing activities		(196,400	)		(196,938	)		(462,938	)		(7,328	)		771,000			(92,604	)
	Cash flows from financing activities
	Proceeds from initial public offering, net of offering costs		198,087			—			—			—			—			198,087
	Intercompany short-term borrowings, net		295			14,254			(34,986	)		(927	)		21,364			—
	Short-term borrowings, net		—			(3,646	)		(273	)		(52,982	)		—			(56,901	)
	Contributions from parent companies		—			189,400			395,800			7,226			(592,426	)		—
	Distributions to parent companies		—			—			—			(11,811	)		11,811			—
	Repayments of Senior Notes		—			(132,500	)		—			—			—			(132,500	)
	Proceeds from (repayments of) intercompany long-term debt		—			189,400			13,000			(2,462	)		(199,938	)		—
	Proceeds from Accounts Receivable Securitization Facility		—			—			—			308,638			—			308,638
	Repayments of Accounts Receivable Securitization Facility		—			—			—			(309,205	)		—			(309,205	)
	Cash provided by (used in) financing activities		198,382			256,908			373,541			(61,523	)		(759,189	)		8,119
	Effect of exchange rates on cash		(1	)		396			(6,404	)		(2,444	)		—			(8,453	)
	Net change in cash and cash equivalents		902			1,699			11,336			10,346			—			24,283
	Cash and cash equivalents—beginning of period		2			954			154,770			40,777			—			196,503
	Cash and cash equivalents—end of period	$	904		$	2,653		$	166,106		$	51,123		$	—		$	220,786
	SUPPLEMENTAL CONDENSED CONSOLIDATING STATEMENT OF CASH FLOWS
	(In thousands)
		Year Ended December 31, 2013
		Parent			Issuers			Guarantor			Non-			Eliminations			Consolidated
		Guarantor						Subsidiaries			Guarantor
											Subsidiaries
	Cash flows from operating activities
	Cash provided by (used in) operating activities	$	(78	)	$	27,101		$	34,470		$	149,842		$	—		$	211,335
	Cash flows from investing activities
	Capital expenditures		—			—			(61,573	)		(11,971	)		—			(73,544	)
	Proceeds from capital expenditures subsidy		—			—			18,769			—			—			18,769
	Proceeds from the sale of businesses and assets		—			—			15,221			—			—			15,221
	Advance payment refunded		—			—			—			(2,711	)		—			(2,711	)
	Distributions from unconsolidated affiliates		—			—			1,055			—			—			1,055
	Intercompany investing activities		—			(4,000	)		(43,012	)		—			47,012			—
	Decrease in restricted cash		—			—			—			7,852			—			7,852
	Cash provided by (used in) investing activities		—			(4,000	)		(69,540	)		(6,830	)		47,012			(33,358	)
	Cash flows from financing activities
	Deferred financing fees		—			(47,488	)		(767	)		—			—			(48,255	)
	Intercompany short-term borrowings, net		77			37,793			5,991			(849	)		(43,012	)		—
	Short-term borrowings, net		—			(7,727	)		(267	)		(34,883	)		—			(42,877	)
	Proceeds from issuance of intercompany long-term debt		—			—			—			4,000			(4,000	)		—
	Repayments of Term Loans		—			(1,239,000	)		—			—			—			(1,239,000	)
	Proceeds from issuance of Senior Notes		—			1,325,000			—			—			—			1,325,000
	Proceeds from issuance of Accounts Receivable Securitization Facility		—			—			—			376,630			—			376,630
	Repayments of Accounts Receivable Securitization Facility		—			—			—			(471,696	)		—			(471,696	)
	Proceeds from the draw of revolving debt		—			405,000			—			—			—			405,000
	Repayments on the revolving debt		—			(525,000	)		—			—			—			(525,000	)
	Cash provided by (used in) financing activities		77			(51,422	)		4,957			(126,798	)		(47,012	)		(220,198	)
	Effect of exchange rates on cash		—			(136	)		2,795			(292	)		—			2,367
	Net change in cash and cash equivalents		(1	)		(28,457	)		(27,318	)		15,922			—			(39,854	)
	Cash and cash equivalents—beginning of period		3			29,411			182,088			24,855			—			236,357
Cash and cash equivalents—end of period	$	2		$	954		$	154,770		$	40,777		$	—		$	196,503
SUPPLEMENTAL CONDENSED CONSOLIDATING STATEMENT OF CASH FLOWS
(In thousands)
	Year Ended December 31, 2012
	Parent			Issuers			Guarantor			Non-			Eliminations			Consolidated
	Guarantor						Subsidiaries			Guarantor
										Subsidiaries
Cash flows from operating activities
Cash provided by (used in) operating activities	$	(48	)	$	7,865		$	113,446		$	64,852		$	—		$	186,115
Cash flows from investing activities
Capital expenditures		—			—			(110,746	)		(7,758	)		—			(118,504	)
Proceeds from capital expenditures subsidy		—			—			6,079			—			—			6,079
Proceeds from the sale of property, plant and equipment		—			—			206			47			—			253
Advance payment received		—			—			—			2,602			—			2,602
Investments in subsidiaries		(162,155	)		—			(22,155	)		—			184,310			—
Intercompany investing activities		—			144,463			68,268			—			(212,731	)		—
Increase in restricted cash		—			—			—			(7,725	)		—			(7,725	)
Cash provided by (used in) investing activities		(162,155	)		144,463			(58,348	)		(12,834	)		(28,421	)		(117,295	)
Cash flows from financing activities
Deferred financing fees		—			(7,392	)		(688	)		—			—			(8,080	)
Intercompany short-term borrowings, net		51			(49,818	)		1,444			(18,625	)		66,948			—
Short-term borrowings, net		—			(4,159	)		(407	)		(33,321	)		—			(37,887	)
Contributions from parent companies		—			22,155			162,155			—			(184,310	)		—
Capital contributions from shareholder		162,155			—			—			—			—			162,155
Repayments of intercompany indebtedness		—			—			(144,183	)		(1,600	)		145,783			—
Repayments of Term Loans		—			(147,000	)		—			—			—			(147,000	)
Proceeds from issuance of Accounts Receivable Securitization Facility		—			—			—			113,828			—			113,828
Repayments of Accounts Receivable Securitization Facility		—			—			—			(130,233	)		—			(130,233	)
Proceeds from the draw of revolving debt		—			1,105,000			—			—			—			1,105,000
Repayments on the revolving debt		—			(1,135,000	)		—			—			—			(1,135,000	)
Cash provided by (used in) financing activities		162,206			(216,214	)		18,321			(69,951	)		28,421			(77,217	)
Effect of exchange rates on cash		—			16			246			(821	)		—			(559	)
Net change in cash and cash equivalents		3			(63,870	)		73,665			(18,754	)		—			(8,956	)
Cash and cash equivalents—beginning of period		—			93,281			108,423			43,609			—			245,313
Cash and cash equivalents—end of period	$	3		$	29,411		$	182,088		$	24,855		$	—		$	236,357

Organization_and_Business_Acti1

Organization and Business Activities - Additional Information (Detail) (USD $)	0 Months Ended	12 Months Ended	0 Months Ended
In Thousands, except Share data, unless otherwise specified	30-May-14	Dec. 31, 2014	Jun. 17, 2014	Dec. 31, 2013	Jun. 17, 2010
		Plant
		ProductionUnits
		Facility
		site
		Country
		JointVenture
Subsidiary, Sale of Stock [Line Items]
Date of incorporation		3-Jun-10
Business acquisition, ownership percentage					100.00%
Description of reverse stock split		1-for-436.69219 reverse split of its issued and outstanding common stock
Authorized common stock after reverse split		50,000,000,000		50,000,000,000
Reverse stock split ratio	0.00229
Cash proceeds from issuance of common stock		$198,087
Number of strategic joint ventures		2
Number of manufacturing plants		34
Number of production units		81
Number of sites		26
Number of countries		14
Number of research and development facilities		11
IPO [Member]
Subsidiary, Sale of Stock [Line Items]
Ordinary shares issued			11,500,000
Price per share			$19
Shares for underwriters' over-allotment option			1,500,000
Cash proceeds from issuance of common stock			$203,200

Basis_of_Presentation_and_Summ2

Basis of Presentation and Summary of Significant Accounting Policies - Additional Information (Detail) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010	Jun. 17, 2014	Jan. 31, 2013
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Fair value of senior notes	$1,212,045,000	$1,366,406,000
Losses related to foreign exchange forward contracts	28,200,000	600,000	4,800,000
Foreign exchange transaction gains (losses)	32,400,000
Accrual environmental liabilities	0	0
Deferred charges and other assets	9,200,000	13,100,000
Impairment losses on goodwill	0	0	0
Goodwill annual impairment assessment date	October 1st
Impairment loss on intangible asset	0	0	0
Income tax expense, net reduction and cumulative adjustments			6,100,000	2,000,000	4,100,000
Senior Notes [Member]
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Debt instrument, stated interest rate	8.75%					8.75%	8.75%
Not Designated as Hedging Instruments [Member] | Foreign Exchange Forward Contracts [Member]
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Number of contracts outstanding		0
Minimum [Member]
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Investment in unconsolidated affiliates	20.00%
Maximum [Member]
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Investment in unconsolidated affiliates	50.00%
Software [Member]
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Estimated useful life	5 years
Other Noncurrent Obligations [Member]
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Accrual environmental liabilities	0	0
Other Expense (Income), Net [Member]
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Foreign exchange transaction gains (losses)	32,400,000	-18,300,000	-18,000,000
Selling, General and Administrative Expenses [Member]
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Research and development costs	53,400,000	49,700,000	48,300,000
Promotional and advertising expenses	2,900,000	3,000,000	3,200,000
Significant Other Observable Inputs (Level 2) [Member] | Senior Notes [Member]
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Fair value of senior notes	$1,212,045,000	$1,366,406,000

Acquisitions_and_Divestitures_1

Acquisitions and Divestitures - Additional Information (Detail)

12 Months Ended

1 Months Ended

12 Months Ended

3 Months Ended

12 Months Ended

Dec. 31, 2014

Dec. 31, 2013

Dec. 31, 2014

Jun. 17, 2010

Jun. 30, 2015

Apr. 30, 2014

Apr. 30, 2014

Dec. 31, 2014

Dec. 31, 2014

Dec. 31, 2013

Dec. 31, 2012

Mar. 02, 2010

Mar. 31, 2014

Sep. 30, 2013

Dec. 31, 2013

Dec. 31, 2014

Dec. 31, 2014

USD ($)

USD ($)

EUR (€)

Scenario Forecast [Member]

Livorno, Italy [Member]

Livorno, Italy [Member]

Livorno, Italy [Member]

Styron Holdcos [Member]

Styron Holdcos [Member]

Styron Holdcos [Member]

Styron Holdcos [Member]

Expandable Polystyrene Business [Member]

Expandable Polystyrene Business [Member]

Expandable Polystyrene Business [Member]

Minimum [Member]

Maximum [Member]

EUR (€)

USD ($)

EUR (€)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

lb

lb

Business Acquisition [Line Items]

Equity interest acquired

100.00%

100.00%

Increase to goodwill

$1,679,000

Indemnity payments received

0

6,700,000

0

Sales proceeds

14,566,000

15,200,000

Business disposition, working capital adjustment paid

700,000

700,000

Recognized loss from sale of business

4,200,000

Supply agreement term

10 years

Quantity of styrene monomer to be supplied

77,000,000

132,000,000

Production percentage

70.00%

100.00%

Incremental payment

500,000

Contingent gain on sale, related to incremental payment

600,000

500,000

Sale of portion of land

6,800,000

4,950,000

Gain on sale of property held-for-sale

$100,000

Acquisition_and_Divestitures_S

Acquisition and Divestitures - Schedule of Loss Calculation (Detail) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Assets
Inventories		$8,135
Property, plant and equipment, net		9,401
Other intangibles assets, net		1,624
Goodwill		383
Total assets sold		19,543
Liabilities
Pension and other benefits		791
Total liabilities sold		791
Net assets sold		18,752
Sales proceeds, net of amount paid to buyer of $0.7 million		14,566
Loss on sale	($116)	$4,186	$263

Acquisition_and_Divestitures_S1

Acquisition and Divestitures - Schedule of Loss Calculation (Parenthetical) (Detail) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013
Business Divestiture [Abstract]
Sale proceeds, net of amount paid to buyer	$0.70

Investments_in_Unconsolidated_2

Investments in Unconsolidated Affiliates - Additional Information (Detail) (USD $)	3 Months Ended								12 Months Ended
	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
	JointVenture								JointVenture
Schedule of Equity Method Investments [Line Items]
Number of strategic joint ventures	2								2
Investments in unconsolidated affiliates	$167,658,000				$155,887,000				$167,658,000	$155,887,000	$140,304,000
Dividends received from investing activities									978,000	1,055,000
Equity in earnings of unconsolidated affiliates	18,154,000	9,267,000	5,378,000	14,950,000	12,195,000	15,215,000	8,929,000	2,799,000	47,749,000	39,138,000	27,140,000
Sales to unconsolidated affiliates									6,500,000	8,200,000	9,500,000
Purchases from unconsolidated affiliates									290,300,000	274,400,000	269,100,000
Accounts receivable due from unconsolidated affiliates	2,000,000				3,300,000				2,000,000	3,300,000
Accounts payable due to unconsolidated affiliates	28,600,000				29,900,000				28,600,000	29,900,000
AmSty [Member]
Schedule of Equity Method Investments [Line Items]
Investments in unconsolidated affiliates	133,500,000				118,300,000				133,500,000	118,300,000
Investment in unconsolidated affiliates-difference between carrying amount and underlying equity	108,400,000				130,800,000				108,400,000	130,800,000
Percentage of ownership underlying net assets	50.00%								50.00%
Amortized weighted average remaining useful life									5.7 years
Dividends received from operating activities									35,000,000	22,500,000	20,000,000
Sumika Styron [Member]
Schedule of Equity Method Investments [Line Items]
Investments in unconsolidated affiliates	34,100,000				37,600,000				34,100,000	37,600,000
Investment in unconsolidated affiliates-difference between carrying amount and underlying equity	21,300,000				20,800,000				21,300,000	20,800,000
Percentage of ownership underlying net assets	50.00%								50.00%
Amortized weighted average remaining useful life									10.8 years
Dividends received from operating activities											1,000,000
Dividends received from investing activities									$1,000,000	$1,100,000

Investments_in_Unconsolidated_3

Investments in Unconsolidated Affiliates - Summarized Financial Information of Unconsolidated Affiliates (Detail) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Equity Method Investment, Summarized Financial Information, Gross Profit (Loss) [Abstract]
Current assets	$498,516	$528,223
Noncurrent assets	313,648	333,894
Total assets	812,164	862,117
Current liabilities	253,507	281,823
Noncurrent liabilities	49,084	48,415
Total liabilities	302,591	330,238
Sales	2,161,232	2,281,045	2,058,060
Gross profit	117,667	94,148	82,511
Net income	$52,957	$38,504	$21,408

Accounts_Receivable_Schedule_o

Accounts Receivable - Schedule of Accounts Receivable (Detail) (USD $)	Dec. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Receivables [Abstract]
Trade receivables	$497,538	$584,160
Non-income tax receivables	75,083	94,069
Other receivables	34,713	45,119
Less: allowance for doubtful accounts	-6,268	-5,866
Total	$601,066	$717,482

Accounts_Receivable_Additional

Accounts Receivable - Additional Information (Detail) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Receivables [Abstract]
Allowance for doubtful accounts	$6,268,000	$5,866,000
Recognized bad debt expense	1,100,000		300,000
Allowance for doubtful account, benefit recognized		$3,000,000

Inventories_Schedule_of_Invent

Inventories - Schedule of Inventories (Detail) (USD $)	Dec. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Inventory Disclosure [Abstract]
Finished goods	$235,949	$252,602
Raw materials and semi-finished goods	205,061	240,858
Supplies	32,851	36,731
Total	$473,861	$530,191

Property_Plant_and_Equipment_S

Property, Plant and Equipment - Schedule of Property, Plant and Equipment (Detail) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	881,080	$890,222
Less: accumulated depreciation	-324,383	-283,795
Property, plant and equipment, net	556,697	606,427
Land [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	47,196	50,982
Land and Waterway Improvements [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	13,139	13,603
Land and Waterway Improvements [Member] | Minimum [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, Estimated Useful Lives (Years)	1 year
Land and Waterway Improvements [Member] | Maximum [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, Estimated Useful Lives (Years)	20 years
Buildings [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	55,693	58,447
Buildings [Member] | Minimum [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, Estimated Useful Lives (Years)	2 years
Buildings [Member] | Maximum [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, Estimated Useful Lives (Years)	40 years
Machinery and Equipment [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	640,861	627,068
Machinery and Equipment [Member] | Minimum [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, Estimated Useful Lives (Years)	1 year
Machinery and Equipment [Member] | Maximum [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, Estimated Useful Lives (Years)	20 years
Utility and Supply Lines [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	7,679	7,100
Utility and Supply Lines [Member] | Minimum [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, Estimated Useful Lives (Years)	1 year
Utility and Supply Lines [Member] | Maximum [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, Estimated Useful Lives (Years)	10 years
Leasehold Interests [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	45,759	50,009
Leasehold Interests [Member] | Minimum [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, Estimated Useful Lives (Years)	1 year
Leasehold Interests [Member] | Maximum [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, Estimated Useful Lives (Years)	45 years
Other Property [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	24,560	27,260
Other Property [Member] | Minimum [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, Estimated Useful Lives (Years)	1 year
Other Property [Member] | Maximum [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, Estimated Useful Lives (Years)	8 years
Construction in Process [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	46,193	$55,753

Property_Plant_and_Equipment_S1

Property, Plant and Equipment - Schedule of Property, Plant and Equipment (Parenthetical) (Detail) (Machinery and Equipment [Member])	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013
Machinery and Equipment [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment approximate percentage	94.00%	94.00%
Property, plant and equipment, percentage useful life, minimum	3 years	3 years
Property, plant and equipment, percentage useful life, maximum	10 years	10 years

Property_Plant_and_Equipment_S2

Property, Plant and Equipment - Schedule of Other Items Related to Property Plant and Equipment (Detail) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Property, Plant and Equipment [Abstract]
Depreciation expense	$75,286	$75,401	$68,312
Capitalized interest	$4,192	$3,142	$6,178

Property_Plant_and_Equipment_A

Property, Plant and Equipment - Additional Information (Detail) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013
Property, Plant and Equipment [Abstract]
Impairment loss on assets	$9.20

Goodwill_and_Intangible_Assets2

Goodwill and Intangible Assets - Changes in Carrying Amount of Goodwill, by Segment (Detail) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Goodwill [Line Items]
Beginning Balance	$37,273	$36,103
Purchase accounting adjustment (Note 16)	1,679
Divestiture (Note 3)		-383
Foreign currency impact	-4,378	1,553
Ending Balance	34,574	37,273
Emulsion Polymers, Latex [Member]
Goodwill [Line Items]
Beginning Balance	14,901	14,280
Purchase accounting adjustment (Note 16)	664
Foreign currency impact	-1,750	621
Ending Balance	13,815	14,901
Emulsion Polymers, Synthetic Rubber [Member]
Goodwill [Line Items]
Beginning Balance	10,205	9,780
Purchase accounting adjustment (Note 16)	455
Foreign currency impact	-1,199	425
Ending Balance	9,461	10,205
Plastics, Styrenics [Member]
Goodwill [Line Items]
Beginning Balance	8,669	8,691
Purchase accounting adjustment (Note 16)	404
Divestiture (Note 3)		-383
Foreign currency impact	-1,018	361
Ending Balance	8,055	8,669
Plastics, Engineered Polymers [Member]
Goodwill [Line Items]
Beginning Balance	3,498	3,352
Purchase accounting adjustment (Note 16)	156
Foreign currency impact	-411	146
Ending Balance	$3,243	$3,498

Goodwill_and_Intangible_Assets3

Goodwill and Intangible Assets - Additional Information (Detail)	12 Months Ended			1 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Mar. 31, 2014	Mar. 31, 2014
	USD ($)	USD ($)	USD ($)	JSR Corporation [Member]	JSR Corporation [Member]
				USD ($)	EUR (€)
Finite-Lived Intangible Assets [Line Items]
Impairment of goodwill	$0	$0	$0
Date for performing annual impairment test	October 1st
Purchase price of acquisition				26,100,000	19,000,000
Percentage of capacity rights in subsidiary				50.00%	50.00%
Effective date of acquisition				31-Mar-14	31-Mar-14
Estimated useful life				6 years	6 years
Amortization expense related to finite-lived intangible assets	$19,600,000	$15,700,000	$14,700,000

Goodwill_and_Intangible_Assets4

Goodwill and Intangible Assets - Schedule of Other Intangible Assets (Detail) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$231,390	$225,326
Accumulated Amortization	-66,032	-53,812
Net	165,358	171,514
Developed Technology [Member]
Finite-Lived Intangible Assets [Line Items]
Estimated Useful Life (Years)	15 years
Gross Carrying Amount	188,854	210,546
Accumulated Amortization	-56,782	-49,713
Net	132,072	160,833
Manufacturing Capacity Rights [Member]
Finite-Lived Intangible Assets [Line Items]
Estimated Useful Life (Years)	6 years
Gross Carrying Amount	23,095
Accumulated Amortization	-2,809
Net	20,286
Software [Member]
Finite-Lived Intangible Assets [Line Items]
Estimated Useful Life (Years)	5 years
Gross Carrying Amount	13,177	11,034
Accumulated Amortization	-6,441	-4,099
Net	6,736	6,935
Software in Development [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	6,000	3,746
Net	6,000	3,746
Other [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	264
Net	$264

Goodwill_and_Intangible_Assets5

Goodwill and Intangible Assets - Estimated Amortization Expense for Next Five Years (Detail) (USD $)	Dec. 31, 2014
In Thousands, unless otherwise specified
Goodwill and Intangible Assets Disclosure [Abstract]
Estimated Amortization Expense, 2015	$19,353
Estimated Amortization Expense, 2016	18,788
Estimated Amortization Expense, 2017	17,952
Estimated Amortization Expense, 2018	17,252
Estimated Amortization Expense, 2019	$17,000

Accounts_Payable_Schedule_of_A

Accounts Payable - Schedule of Accounts Payable (Detail) (USD $)	Dec. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Payables and Accruals [Abstract]
Trade payables	$383,297	$462,304
Other payables	51,395	46,789
Total	$434,692	$509,093

Debt_Schedule_of_Debt_Detail

Debt - Schedule of Debt (Detail) (USD $)	Dec. 31, 2014	Dec. 31, 2013	Jan. 31, 2013
Debt Instrument [Line Items]
Senior Notes	$1,192,500,000	$1,325,000,000	$1,325,000,000
Other indebtedness	9,707,000	11,421,000
Total debt	1,202,207,000	1,336,421,000
Short-term borrowings	-7,559,000	-8,754,000
Total long-term debt	1,194,648,000	1,327,667,000
Total debt	1,202,207,000	1,336,421,000
Accounts Receivable Securitization Facility [Member]
Debt Instrument [Line Items]
Line of credit	$0	$0

Debt_Senior_Secured_Credit_Fac

Debt - Senior Secured Credit Facility (Detail) (USD $)	0 Months Ended	1 Months Ended		12 Months Ended			0 Months Ended	1 Months Ended	3 Months Ended
	8-May-12	Jul. 31, 2014	Jan. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Aug. 09, 2012	Jul. 31, 2012	Mar. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Dec. 31, 2015	Feb. 02, 2011	Jun. 30, 2010
Debt Instrument [Line Items]
Accrued interest on outstanding debt				$43,500,000	$48,300,000
Repayment of term loans					1,239,000,000	147,000,000
Proceeds from the issuance of Senior Notes					1,325,000,000
Equity contribution from Parent	22,200,000					162,155,000
Senior Secured Credit Facility first lien net leverage ratio				4.5	5				5.25	5	5
Loss on extinguishment of debt		7,400,000	20,700,000	7,390,000	20,744,000
8.750% Senior Secured Notes [Member]
Debt Instrument [Line Items]
Proceeds from the issuance of Senior Notes			1,325,000,000
Debt instrument interest rate			8.75%
Scenario Forecast [Member]
Debt Instrument [Line Items]
Senior Secured Credit Facility first lien net leverage ratio												4.25
2010 Term Loans [Member]
Debt Instrument [Line Items]
Available borrowings under the senior secured term loans													780,000,000	800,000,000
Revolving Facility [Member]
Debt Instrument [Line Items]
Maximum borrowing capacity, Revolving Credit Facility			300,000,000			240,000,000								240,000,000
Credit Facility, amount outstanding				0	0
Repayment of term loans			1,239,000,000
Capitalization of issuance costs								1,200,000
Unamortized deferred financing fees				8,800,000	11,700,000
Credit Facility, funds available for borrowings				293,300,000	292,700,000
Letters of credit, amount outstanding				6,700,000	7,300,000
Interest expense excluding amortization of deferred financing fees and debt discounts				1,800,000	2,800,000	6,000,000
Interest paid				1,900,000	2,800,000	6,100,000
Revolving Facility [Member] | Base Rate [Member]
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate			3.00%			4.75%
Revolving Facility [Member] | LIBOR [Member]
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate			4.00%			5.75%
Debt instrument, maturity date			2018-01
2011 Term Loans [Member]
Debt Instrument [Line Items]
Available borrowings under the senior secured term loans													1,600,000,000
Credit Facility, amount outstanding													1,400,000,000
Repayment of term loans							140,000,000
Capitalization of issuance costs								6,200,000
Debt issuance costs								2,300,000
Senior Secured Credit Facility [Member]
Debt Instrument [Line Items]
Capitalization of issuance costs			5,500,000
Senior Secured Credit Facility maximum leverage ratio						5.25
Senior Secured Credit Facility minimum interest coverage ratio						2
Percentage of Revolving Facility borrowing capacity covenant trigger			25.00%
Undrawn letters of credit			10,000,000
Loss on extinguishment of debt									20,700,000
Interest expense relating to amortization of deferred financing fees				2,900,000	3,100,000	6,500,000
Interest expense relating to amortization of debt discounts				0	100,000	500,000
Term Loans [Member]
Debt Instrument [Line Items]
Interest expense excluding amortization of deferred financing fees and debt discounts				0	7,700,000	91,000,000
Interest paid				$0	$16,500,000	$87,600,000

Debt_Senior_Notes_Detail

Debt - Senior Notes (Detail) (USD $)	1 Months Ended		12 Months Ended
	Jul. 31, 2014	Jan. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Jun. 17, 2014
Debt Instrument [Line Items]
Debt, face amount		$1,325,000,000	$1,192,500,000	$1,325,000,000
Redemption of Senior Notes			132,500,000
Loss on extinguishment of debt	7,400,000	20,700,000	7,390,000	20,744,000
Senior Notes [Member]
Debt Instrument [Line Items]
Debt instrument, stated interest rate		8.75%	8.75%		8.75%
Debt instrument, Interest payment frequency			Semi-annually on February 1st and August 1st of each year
Debt instrument, maturity date			1-Feb-19
Redemption of Senior Notes	132,500,000		132,500,000
Call premium	4,000,000
Accrued and unpaid interest	5,200,000
Loss on extinguishment of debt			7,400,000
Write-off related unamortized debt issuance costs			3,400,000
Deferred financing fees		42,000,000
Amortization of deferred financing fees			5,700,000	4,900,000
Unamortized deferred financing fees			28,000,000	37,100,000
Interest expense			110,600,000	106,900,000
Interest paid			$115,400,000	$58,600,000
Senior Notes [Member] | Any Time Prior to August 1, 2015 [Member]
Debt Instrument [Line Items]
Debt instrument, percentage of aggregate principal amount that may be redeemed			35.00%
Debt instrument, redemption price percentage			108.75%
Senior Notes [Member] | During Any 12-Month Period Commencing from the Issue Date Until August 1, 2015 [Member]
Debt Instrument [Line Items]
Debt instrument, percentage of aggregate principal amount that may be redeemed			10.00%
Debt instrument, redemption price percentage			103.00%

Debt_Redemption_Price_as_Perce

Debt - Redemption Price as Percentage of Principal Amount to Applicable Date of Redemption (Detail) (Senior Notes [Member])	12 Months Ended
	Dec. 31, 2014
12-Month Period Commencing August 1 in Year 2015 [Member]
Debt Instrument, Redemption [Line Items]
Redemption price percentage	104.38%
12-Month Period Commencing August 1 in Year 2016 [Member]
Debt Instrument, Redemption [Line Items]
Redemption price percentage	102.19%
12-Month Period Commencing August 1 in Year 2017 and Thereafter [Member]
Debt Instrument, Redemption [Line Items]
Redemption price percentage	100.00%

Debt_Accounts_Receivable_Secur

Debt - Accounts Receivable Securitization Facility (Detail) (USD $)	1 Months Ended	4 Months Ended	12 Months Ended
	31-May-13	Apr. 30, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Aug. 31, 2010
Debt Instrument [Line Items]
Interest expense			$124,923,000	$132,038,000	$109,971,000
Accounts Receivable Securitization Facility [Member]
Debt Instrument [Line Items]
Maximum borrowing capacity	200,000,000	160,000,000				160,000,000
Debt instrument, maturity date			2016-05
Deferred financing fees	700,000
Debt instrument, basis spread on variable rate	2.60%	3.25%
Fixed interest charges on available, but undrawn borrowings	1.40%	1.50%
Amounts outstanding			0	0
Accounts receivable available to support facility			136,100,000	143,800,000
Interest expense			2,900,000	4,200,000	4,700,000
Unamortized deferred financing fees			1,900,000	3,500,000
Amortization of deferred financing fees			$1,400,000	$1,400,000	$1,500,000

Debt_Other_Indebtedness_Detail

Debt - Other Indebtedness (Detail) (USD $)	12 Months Ended	0 Months Ended
	Dec. 31, 2011	Dec. 31, 2014	Dec. 31, 2013	Jan. 31, 2013	Dec. 31, 2012	Jun. 30, 2010
	CreditFacility
Revolving Facility [Member]
Debt Instrument [Line Items]
Uncommitted funds available for borrowing				$300,000,000	$240,000,000	$240,000,000
Remaining credit facility, uncommitted funds available for borrowings		293,300,000	292,700,000
Other Indebtedness [Member] | Revolving Facility [Member]
Debt Instrument [Line Items]
Number of short term credit facilities	2
Outstanding borrowings under remaining revolving facility		0	0
Other Indebtedness [Member] | Short-term Revolving Facilities Annual Renewal [Member]
Debt Instrument [Line Items]
Uncommitted funds available for borrowing	28,500,000
Other Indebtedness [Member] | Short-term Revolving Facilities Non-renewal [Member]
Debt Instrument [Line Items]
Remaining credit facility, uncommitted funds available for borrowings	13,500,000
Other Indebtedness [Member] | Remaining Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Remaining credit facility, uncommitted funds available for borrowings		15,000,000
Outstanding borrowings under remaining revolving facility		7,600,000	5,100,000
Weighted average interest rate		0.10%	0.10%
Remaining revolving facility repayment period		12 months
Other Indebtedness [Member] | Senior Secured Credit Facility [Member]
Debt Instrument [Line Items]
Foreign working capital facilities maximum limit		75,000,000
Other Indebtedness [Member] | 2013 Amendment Agreement [Member] | Asia [Member]
Debt Instrument [Line Items]
Foreign working capital facilities maximum limit		$25,000,000

Foreign_Exchange_Forward_Contr2

Foreign Exchange Forward Contracts - Additional Information (Detail) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Derivative Instruments, Gain (Loss) [Line Items]
Loss from foreign exchange forward contracts	$28,200,000	$600,000	$4,800,000
Derivative liabilities	4,850,000	0
Derivative assets	298,000	0
Recorded losses from settlements and changes in the fair value of outstanding forward contracts	28,200,000
Foreign exchange transaction gains (losses)	32,400,000
Foreign Exchange Forward Contracts [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivative liabilities	4,850,000
Derivative assets	298,000
Foreign Exchange Forward Contracts [Member] | Not Designated as Hedging Instruments [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivative contracts, notional amount	$102,500,000		$82,000,000

Foreign_Exchange_Forward_Contr3

Foreign Exchange Forward Contracts - Notional Amounts of Most Significant Net Foreign Exchange Hedge Positions Outstanding (Detail) (USD $)	Dec. 31, 2014
Euro [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative, Notional Amount, Buy / (Sell)	$239,341,000
Chinese Yuan [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative, Notional Amount, Buy / (Sell)	-100,086,000
Swiss Franc [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative, Notional Amount, Buy / (Sell)	35,438,000
Indonesian Rupiah [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative, Notional Amount, Buy / (Sell)	-33,020,000
British Pound [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative, Notional Amount, Buy / (Sell)	($9,910,000)

Foreign_Exchange_Forward_Contr4

Foreign Exchange Forward Contracts - Summary of Financial Assets and Liabilities Included in Consolidated Balance Sheets (Detail) (USD $)	Dec. 31, 2014	Dec. 31, 2013
Derivatives, Fair Value [Line Items]
Net Amounts of Assets Presented in the Consolidated Balance Sheet	$298,000	$0
Net Amounts of Liabilities Presented in the Consolidated Balance Sheet	4,850,000	0
Foreign Exchange Forward Contracts [Member]
Derivatives, Fair Value [Line Items]
Gross Amounts of Recognized Assets	2,037,000
Gross Amounts of Offset in the Consolidated Balance Sheet	-1,739,000
Net Amounts of Assets Presented in the Consolidated Balance Sheet	298,000
Gross Amounts of Recognized Liabilities	6,589,000
Gross Amounts of Offset in the Consolidated Balance Sheet	-1,739,000
Net Amounts of Liabilities Presented in the Consolidated Balance Sheet	$4,850,000

Shareholders_Equity_Additional

Shareholders' Equity - Additional Information (Detail) (USD $)	0 Months Ended		12 Months Ended			1 Months Ended		0 Months Ended
	Jun. 17, 2014	30-May-14	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Jul. 31, 2014	Jun. 30, 2014	Aug. 08, 2012	8-May-12	Jan. 31, 2013
Subsidiary, Sale of Stock [Line Items]
Common stock issued during period, shares			0	779	0
Description of reverse stock split			1-for-436.69219 reverse split of its issued and outstanding common stock
Authorized common stock after reverse split			50,000,000,000	50,000,000,000
Reverse stock split ratio		0.00229
Cash proceeds from issuance of common stock			$198,087,000
Repayment of Senior Notes			132,500,000
Payment of advisory, accounting, legal and printing expenses related to offering	5,100,000
Senior Notes [Member]
Subsidiary, Sale of Stock [Line Items]
Repayment of Senior Notes			132,500,000			132,500,000
Debt instrument interest rate	8.75%		8.75%							8.75%
Senior Notes due period						2019
Accrued and unpaid interest amount						5,200,000
Call premium						4,000,000
Bain Capital [Member]
Subsidiary, Sale of Stock [Line Items]
Payment for termination of Advisory Agreement with Bain Capital			23,300,000				23,300,000
Payment of advisory, accounting, legal and printing expenses related to offering	2,200,000
Parent Guarantor [Member]
Subsidiary, Sale of Stock [Line Items]
Common stock issued during period, shares								32,100,000	5,100,000
Common stock issued during period, value								140,000,000	22,200,000
Price per share								$0.01	$0.01
Cash proceeds from issuance of common stock			198,087,000
IPO [Member]
Subsidiary, Sale of Stock [Line Items]
Price per share	$19
Shares for underwriters' over-allotment option	1,500,000
Ordinary shares issued	11,500,000
Cash proceeds from issuance of common stock	$203,200,000

Fair_Value_Measurements_Additi

Fair Value Measurements - Additional Information (Detail)	Dec. 31, 2013
	Contracts
Fair Value Disclosures [Abstract]
Number of foreign exchange forward contracts outstanding	0

Fair_Value_Measurements_Schedu

Fair Value Measurements - Schedule of Assets and Liabilities at Fair Value on Recurring Basis (Detail) (USD $)	Dec. 31, 2014	Dec. 31, 2013
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets at Fair Value	$298,000	$0
Liabilities at Fair Value	-4,850,000	0
Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total fair value	-4,552,000
Recurring [Member] | Foreign Exchange Forward Contracts [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets at Fair Value	298,000
Liabilities at Fair Value	-4,850,000
Recurring [Member] | Significant Other Observable Inputs (Level 2) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total fair value	-4,552,000
Recurring [Member] | Significant Other Observable Inputs (Level 2) [Member] | Foreign Exchange Forward Contracts [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets at Fair Value	298,000
Liabilities at Fair Value	($4,850,000)

Fair_Value_Measurements_Estima

Fair Value Measurements - Estimated Fair Value of Outstanding Debt Not Carried at Fair Value (Detail) (USD $)	Dec. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total fair value of long term debt	$1,212,045	$1,366,406
Senior Notes [Member] | Significant Other Observable Inputs (Level 2) [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total fair value of long term debt	$1,212,045	$1,366,406

Income_Taxes_Income_Loss_befor

Income Taxes - Income (Loss) before Income Taxes Earned within and outside the United States (Detail) (USD $)	3 Months Ended								12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Income Tax Disclosure [Abstract]
United States									$17,522	$25,228	$49,193
Outside of the United States									-65,135	-25,597	-1,351
Income (loss) before income taxes	($31,818)	($6,460)	($39,171)	$29,836	$24,386	$10,937	($25,914)	($9,778)	($47,613)	($369)	$47,842

Income_Taxes_Provision_for_Ben

Income Taxes - Provision for (Benefit from) Income Taxes (Detail) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Income Tax [Line Items]
Current	$14,886	$17,634	$12,826
Deferred	4,833	4,215	4,734
Total Provision for (benefit from) income taxes	19,719	21,849	17,560
U.S. Federal [Member]
Income Tax [Line Items]
Current	2,101	8,617	5,094
Deferred	-2,536	1,252	8,070
Total Provision for (benefit from) income taxes	-435	9,869	13,164
U.S. State and Other [Member]
Income Tax [Line Items]
Current	295	820	229
Deferred	3	70	1,174
Total Provision for (benefit from) income taxes	298	890	1,403
Non - U.S. [Member]
Income Tax [Line Items]
Current	12,490	8,197	7,503
Deferred	7,366	2,893	-4,510
Total Provision for (benefit from) income taxes	$19,856	$11,090	$2,993

Income_Taxes_Effective_Tax_Rat

Income Taxes - Effective Tax Rate on Pre-tax Income Differs from the U.S. Statutory Rate (Detail) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Income Tax Disclosure [Abstract]
Taxes at U.S. statutory rate	($16,664)	($129)	$16,745
State and local income taxes	571	603	1,493
Non U.S. statutory rates, including credits	899	-4,988	-5,185
U.S. tax effect of foreign earnings and dividends	-2,112	-942	-2,890
Unremitted earnings	-189	-157	3,087
Stock-based compensation	14,679	16,430	-8,780
Non-deductible interest	-2,818	-1,465	1,882
Change in valuation allowances	3,652	2,992	7,064
Uncertain tax positions		-229	-1,057
Withholding taxes on interest and royalties	260	3,814	-3,943
U.S. manufacturing deduction	3,343	3,112	2,466
Provision to return adjustments	5,401	5,258	5,203
Non-deductible other expenses	15,589	1,573	2,004
Government subsidy income		-4,219
Impact on foreign currency exchange	-2,643	71	291
Other-net	-249	125	-820
Total Provision for (benefit from) income taxes	$19,719	$21,849	$17,560
Effective tax rate	-41.00%	-5921.00%	37.00%

Income_Taxes_Deferred_Income_T

Income Taxes - Deferred Income Taxes Reflect Temporary Differences Between the Valuation of Assets and Liabilities (Detail) (USD $)	Dec. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Income Tax Disclosure [Abstract]
Tax loss and credit carry forwards	$62,142	$40,007
Unremitted earnings	0	0
Unconsolidated affiliates	11,761	12,257
Other accruals and reserves	11,536	13,556
Property, plant and equipment	0	0
Goodwill and other intangible assets	15,791	23,452
Deferred financing fees	6,366	6,973
Employee benefits	41,186	31,858
Deferred tax assets, gross	148,782	128,103
Valuation allowance	-66,920	-50,404
Deferred tax assets, net	81,862	77,699
Tax loss and credit carry forwards	0	0
Unremitted earnings	9,273	9,462
Unconsolidated affiliates	0	0
Other accruals and reserves	0	0
Property, plant and equipment	42,715	45,314
Goodwill and other intangible assets	0	0
Deferred financing fees	0	0
Employee benefits	0	0
Deferred tax liabilities, gross	51,988	54,776
Valuation allowance	0	0
Deferred tax liabilities, net	$51,988	$54,776

Income_Taxes_Additional_Inform

Income Taxes - Additional Information (Detail) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Schedule Of Effective Tax Rate Reconciliation [Line Items]
Operating loss carryforwards	$227,800,000	$146,200,000
Realization of recorded tax benefits on tax loss carryforwards	66,920,000	50,404,000
Recognized interest and penalties	100,000	700,000	800,000
Accrued interest and penalties	1,800,000	2,000,000
Impact of effective tax rate recognized	16,100,000
Income tax examination year	2010
2015 Through 2019 [Member]
Schedule Of Effective Tax Rate Reconciliation [Line Items]
Operating loss carryforwards	13,100,000
Beyond 2019 [Member]
Schedule Of Effective Tax Rate Reconciliation [Line Items]
Operating loss carryforwards	$214,700,000

Income_Taxes_Schedule_of_Recon

Income Taxes - Schedule of Reconciliation of Unrecognized Tax Benefits (Detail) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Income Tax Disclosure [Abstract]
Beginning Balance	$26,899	$30,079	$25,431
Increases related to current year tax positions	187	1,225	6,757
Decreases related to prior year tax positions	-6,701	-4,405	-2,109
Ending Balance	$20,385	$26,899	$30,079

Commitments_and_Contingencies_1

Commitments and Contingencies - Additional Information (Detail) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Loss Contingencies [Line Items]
Rental expense for leases	$15,900,000	$16,200,000	$17,700,000
Accrued obligations for environmental remediation and restoration costs	0	0
Environmental remediation costs	$0	$0	$0
Minimum [Member]
Loss Contingencies [Line Items]
Purchase commitment period	1 year
Maximum [Member]
Loss Contingencies [Line Items]
Purchase commitment period	6 years

Commitments_and_Contingencies_2

Commitments and Contingencies - Schedule of Future Minimum Rental Payments under Operating Leases with Remaining Non-Cancelable Terms (Detail) (USD $)	Dec. 31, 2014
In Thousands, unless otherwise specified
Operating Leases, Future Minimum Payments Due, Fiscal Year Maturity [Abstract]
2015	$8,040
2016	5,510
2017	3,159
2018	2,780
2019	2,778
2020 and beyond	12,664
Total	$34,931

Commitments_and_Contingencies_3

Commitments and Contingencies - Schedule of Fixed and Determinable Portion of Obligation under Purchase Commitments (Detail) (USD $)	Dec. 31, 2014
In Millions, unless otherwise specified
Purchase Obligation, Fiscal Year Maturity [Abstract]
2015	$1,299
2016	1,292
2017	1,421
2018	1,214
2019	1,239
Thereafter	1,205
Total	$7,670

Pension_Plans_and_Other_Postre2

Pension Plans and Other Postretirement Benefits - Additional Information (Detail) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2015
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Recognition of prior service credits for transfer of pension plan resulting from an acquisition	$9,529,000	$10,548,000
Recognition of net losses for transfer of pension plan resulting from an acquisition	42,442,000	3,545,000	51,880,000
Percentage of change in assumed health care cost trend rate have nominal effect on service and interest costs and projected benefit obligations	1.00%
Impact to projected benefit obligation	1,000,000
Estimated contributions to defined benefit pension plans	12,200,000
Contribution made to defined contribution plans	6,800,000	6,300,000	7,000,000
Plan Assets [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Total plan assets, investments in insurance contracts	92,600,000	81,300,000
Defined Benefit Pension Plans [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Net benefit costs recognized	22,429,000	22,864,000	13,543,000
Defined Benefit Pension Plans [Member] | Scenario Forecast [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Net loss				5,700,000
Net prior service cost (credit)				-1,700,000
Other Postretirement Benefit Plans [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Years of service	10 years
Other Postretirement Benefits Plan, description	In general, the plan applies to employees hired by Dow before January 1, 2008 and transferred to the Company in connection with the Acquisition, and who are at least 50 years old with 10 years of service. The plan allows for spouse coverage as well. If an employee was hired on or before January 1, 1993, the coverage extends past age 65. For employees hired after January 1, 1993 but before January 1, 2008, coverage ends at age 65.
Net benefit costs recognized	787,000	545,000	518,000
Other Postretirement Benefit Plans [Member] | Brazil [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined benefit medical plan, description	The extended medical plan must include the same level of coverage and other conditions offered to active employees, whereas former employees must assume 100% of the premium cost.
Liabilities recorded under defined benefit plan, business acquisition	2,700,000
Increase in goodwill	1,700,000
Net periodic benefit costs	1,000,000
Other Postretirement Benefit Plans [Member] | Netherlands [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined benefit curtailment gain	1,500,000
Benefits ceased, date	1-Jan-15
Other Postretirement Benefit Plans [Member] | Scenario Forecast [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Net prior service cost (credit)				100,000
Other Postretirement Benefit Plans [Member] | Minimum [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Insurance coverage age limit	50 years
Other Postretirement Benefit Plans [Member] | Maximum [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Insurance coverage age limit	65 years
Successor Plans [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Recognition of prior service credits for transfer of pension plan resulting from an acquisition		13,000,000
Recognition of net losses for transfer of pension plan resulting from an acquisition		1,400,000
Supplemental Employee Retirement Plan [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Net benefit costs recognized	1,300,000	2,300,000	2,600,000
Change in plan assumptions, actuarial loss			2,200,000
Tax impact of Gain (loss) arising from change in plan assumptions			1,400,000
Benefit obligations	13,200,000	12,700,000
Amounts of net loss included in AOCI	2,000,000	2,900,000
Amortization from AOCI into net periodic benefit costs	800,000	700,000
Supplemental Employee Retirement Plan [Member] | Scenario Forecast [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Amortization from AOCI into net periodic benefit costs				$800,000

Pension_Plans_and_Other_Postre3

Pension Plans and Other Postretirement Benefits - Schedule of Weighted-average Assumptions on Pension Plan Obligations, Other Postretirement Benefit ("OPEB") and Net Periodic Benefit Costs (Detail)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Defined Benefit Pension Plans [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Discount rate	2.01%	3.30%	3.05%
Pension Plan Obligations, Rate of increase in future compensation levels	2.71%	2.86%	2.69%
Pension Plan Obligations, Expected long-term rate of return on plan assets	0.00%	0.00%	0.00%
Net Periodic Benefit Costs, Discount rate	3.30%	3.05%	4.49%
Net Periodic Benefit Costs, Rate of increase in future compensation levels	2.86%	2.69%	2.64%
Net Periodic Benefit Costs, Expected long-term rate of return on plan assets	2.83%	2.44%	4.09%
Other Postretirement Benefit Plans [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Discount rate	6.40%	4.72%	3.93%
Other Postretirement Benefit Obligations, Initial health care cost trend rate	8.05%	6.67%	7.00%
Other Postretirement Benefit Obligations, Ultimate health care cost trend rate	5.43%	5.00%	5.00%
Other Postretirement Benefit Obligations, Year ultimate trend rate to be reached	2021	2019	2019
Net Periodic Benefit Costs, Discount rate	6.69%	3.93%	5.08%
Net Periodic Benefit Costs, Initial health care cost trend rate	6.67%	7.00%	7.33%
Net Periodic Benefit Costs, Ultimate health care cost trend rate	5.00%	5.00%	5.00%
Net Periodic Benefit Costs, Year ultimate trend rate to be reached	2019	2019	2019

Pension_Plans_and_Other_Postre4

Pension Plans and Other Postretirement Benefits - Schedule of Net Periodic Benefit Costs for Pension and Other Postretirement Benefit Plans (Detail) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Defined Benefit Pension Plans [Member]
Net periodic benefit cost
Service cost	$14,097	$13,866	$10,054
Interest cost	7,687	6,482	6,475
Expected return on plan assets	-2,427	-1,710	-2,251
Amortization of prior service cost (credit)	-1,002	-989	142
Amortization of net (gain) loss	2,557	3,093	-630
Settlement and curtailment (gain) loss	1,517	2,122	-247
Net periodic benefit cost (income)	22,429	22,864	13,543
Amounts recognized in other comprehensive income (loss)
Net loss (gain)	56,318	6,170	65,303
Amortization of prior service (cost) credit	1,002	989	-142
Amortization of net gain (loss)	-2,557	-3,093	630
Settlement and curtailment gain (loss)	-1,517	-2,122	247
Prior service cost (credit)	-12,706	-12,992
Total recognized in other comprehensive income (loss)	40,540	-11,048	66,038
Net periodic benefit cost (income)	22,429	22,864	13,543
Total recognized in net periodic benefit cost and other comprehensive income (loss)	62,969	11,816	79,581
Other Postretirement Benefit Plans [Member]
Net periodic benefit cost
Service cost	1,048	283	252
Interest cost	1,189	262	275
Amortization of prior service cost (credit)	102
Amortization of net (gain) loss	-45		-9
Settlement and curtailment (gain) loss	-1,507
Net periodic benefit cost (income)	787	545	518
Amounts recognized in other comprehensive income (loss)
Net loss (gain)	1,263	-1,354	677
Amortization of prior service (cost) credit	-102
Amortization of net gain (loss)	45		9
Settlement and curtailment gain (loss)	-242
Prior service cost (credit)		730
Total recognized in other comprehensive income (loss)	964	-624	686
Net periodic benefit cost (income)	787	545	518
Total recognized in net periodic benefit cost and other comprehensive income (loss)	$1,751	($79)	$1,204

Pension_Plans_and_Other_Postre5

Pension Plans and Other Postretirement Benefits - Schedule of Changes in Pension Benefit Obligations and Fair Value of Plan Assets and Funded Status of All Significant Plans (Detail) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Defined Benefit Pension Plans [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Service cost	$14,097	$13,866	$10,054
Interest cost	7,687	6,482	6,475
Funded status at end of period	-187,521	-156,567
Defined Benefit Pension Plans [Member] | Change in Projected Benefit Obligations [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Benefit obligation at beginning of period	237,914	231,437
Service cost	14,097	13,866
Interest cost	7,687	6,482
Plan participants' contributions	2,385	1,831
Actuarial changes in assumptions and experience	72,470	-10,376
Benefits paid	-900	-3,362
Benefit payments by employer	-1,428	-1,367
Acquisitions/Divestiture		-333
Plan amendments	-12,706	-12,992
Curtailments		2,124
Settlements	-6,783	-1,633
Other	614	4,576
Currency impact	-33,259	7,661
Benefit obligation at end of period	280,091	237,914
Defined Benefit Pension Plans [Member] | Change in Plan Assets [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair value of plan assets at beginning of period	81,347	72,350
Actual return on plan assets	18,580	-12,713
Settlements	-6,783	-1,633
Employer contributions	9,446	17,665
Plan participants' contributions	2,385	1,831
Benefits paid	-2,239	-3,609
Other	614	4,576
Currency impact	-10,780	2,880
Fair value of plan assets at end of period	92,570	81,347
Other Postretirement Benefit Plans [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Service cost	1,048	283	252
Interest cost	1,189	262	275
Funded status at end of period	-9,077	-6,660
Other Postretirement Benefit Plans [Member] | Change in Projected Benefit Obligations [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Benefit obligation at beginning of period	6,660	6,666
Service cost	1,048	283
Interest cost	1,189	262
Actuarial changes in assumptions and experience	1,263	-1,354
Acquisitions/Divestiture	1,679
Plan amendments		730
Curtailments	-1,743
Currency impact	-1,019	73
Benefit obligation at end of period	$9,077	$6,660

Pension_Plans_and_Other_Postre6

Pension Plans and Other Postretirement Benefits - Schedule of Net Amounts Recognized in Balance Sheet (Detail) (USD $)	Dec. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Defined Benefit Pension Plans [Member]
Net amounts recognized in the balance sheets at December 31
Current liabilities	($1,604)	($1,599)
Noncurrent liabilities	-185,917	-154,968
Net amounts recognized in the balance sheet	-187,521	-156,567
Accumulated benefit obligation at the end of the period	220,277	178,987
Pretax amounts recognized in AOCI at December 31:
Net prior service cost (credit)	-21,386	-9,682
Net gain (loss)	97,127	44,883
Total at end of period	75,741	35,201
Other Postretirement Benefit Plans [Member]
Net amounts recognized in the balance sheets at December 31
Current liabilities	-70	-26
Noncurrent liabilities	-9,007	-6,634
Net amounts recognized in the balance sheet	-9,077	-6,660
Accumulated benefit obligation at the end of the period	9,077	6,660
Pretax amounts recognized in AOCI at December 31:
Net prior service cost (credit)	628	730
Net gain (loss)	-266	-1,332
Total at end of period	$362	($602)

Pension_Plans_and_Other_Postre7

Pension Plans and Other Postretirement Benefits - Schedule of Estimated Future Benefit Payments, Reflecting Expected Future Service (Detail) (USD $)	Dec. 31, 2014
In Thousands, unless otherwise specified
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
2015	$3,707
2016	4,298
2017	4,547
2018	5,014
2019	5,046
2020 through 2024	38,399
Total	61,011
Defined Benefit Pension Plans [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
2015	3,635
2016	4,193
2017	4,402
2018	4,819
2019	4,786
2020 through 2024	35,747
Total	57,582
Other Postretirement Benefit Plans [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
2015	72
2016	105
2017	145
2018	195
2019	260
2020 through 2024	2,652
Total	3,429
Supplemental Employee Retirement Plan [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
2017	13,562
Total	$13,562

Pension_Plans_and_Other_Postre8

Pension Plans and Other Postretirement Benefits - Schedule of Pension Plans with Projected and Accumulated Benefit Obligations in Excess of Fair Value of Plan Assets (Detail) (USD $)	Dec. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Projected Benefit Obligation Exceeds the Fair Value of Plan Assets
Projected benefit obligations	$280,091	$237,914
Fair value of plan assets	92,570	81,347
Accumulated Benefit Obligation Exceeds the Fair Value of Plan Assets
Accumulated benefit obligations	177,496	152,056
Fair value of plan assets	$44,382	$50,004

StockBased_Compensation_Additi

Stock-Based Compensation - Additional Information (Detail) (USD $)	12 Months Ended			6 Months Ended	7 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Jun. 10, 2014	Dec. 31, 2014	Jun. 17, 2010
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Sale of stock, number of shares issued in transaction	0	779	0
Maximum [Member] | 2014 Omnibus Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares authorized	4,500,000				4,500,000
Time-based Restricted Stock Awards [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted Stock Units granted during period	0
Repurchase of vested stock awards, shares	0	3,372	0
Repurchase of vested stock awards, value	0	900,000	0
Compensation expense	7,000,000	8,300,000	4,200,000
Adjustment of prior period grant date fair value			2,500,000
Unrecognized compensation cost	4,900,000				4,900,000
Weighted-average period of recognition	2 years 6 months
Time-based Restricted Stock Awards [Member] | Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock awards, vesting period	3 years
Time-based Restricted Stock Awards [Member] | Minimum [Member] | Cliff Vesting [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock awards, vesting period	1 year
Vesting percentage	20.00%
Time-based Restricted Stock Awards [Member] | Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock awards, vesting period	5 years
Time-based Restricted Stock Awards [Member] | Maximum [Member] | Cliff Vesting [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock awards, vesting period	2 years
Vesting percentage	40.00%
Time-based, Performance-based and Modified Time-based Restricted Stock Awards [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Grants in period	0
Liability Awards [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock awards, vesting period	2 years
Compensation expense	0		900,000
Liability Awards [Member] | Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation expense		100,000
Unrecognized compensation cost		0
Management Retention Awards [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation expense	900,000	1,400,000	2,300,000
Unrecognized compensation cost	400,000				400,000
Weighted-average period of recognition	1 year 1 month 6 days
Management Retention Awards [Member] | Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock awards, vesting period	1 year
Management Retention Awards [Member] | Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock awards, vesting period	4 years
Restricted Stock Sales [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation expense		200,000
Time-based and Performance-based Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares authorized						750,000
Restricted Stock Units granted during period	0
Modified Time-based Restricted Stock Awards [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted Stock Units granted during period	0			0	0
Compensation expense	2,500,000
Unrecognized compensation cost	9,300,000				9,300,000
Weighted-average period of recognition	2 years 7 months 6 days
Restricted Stock Units [Member] | 2014 Omnibus Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of directors, to whom shares issued	2
Restricted Stock Units [Member] | 2014 Omnibus Incentive Plan [Member] | Director [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted Stock Units granted during period	4,736
Compensation expense	100,000
Shares granted to directors, grant date fair value	100,000				$100,000

StockBased_Compensation_Summar

Stock-Based Compensation - Summary of Parent's Time-based Restricted Stock Awards (Detail) (Time-based Restricted Stock Awards [Member], USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Time-based Restricted Stock Awards [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unvested Shares, Beginning Balance	131,190
Granted, Shares	0
Vested, Shares	-66,143
Forfeited, Shares	-2,499
Unvested Shares, Ending Balance	62,548	131,190
Unvested Weighted-Average Grant Date Fair Value per Share, Beginning Balance	$164.97
Granted, Weighted-Average Grant Date Fair Value per Share	$0	$155.40	$204.32
Vested, Weighted-Average Grant Date Fair Value per Share	$163.03
Forfeited, Weighted-Average Grant Date Fair Value per Share	$135.21
Unvested Weighted-Average Grant Date Fair Value per Share, Ending Balance	$172.64	$164.97

StockBased_Compensation_Summar1

Stock-Based Compensation - Summary of Weighted-average Grant Date Fair Value per Share of Time-based Restricted Stock Awards Granted and Total Fair Value of Awards Vested (Detail) (Time-based Restricted Stock Awards [Member], USD $)	12 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Time-based Restricted Stock Awards [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted-Average Grant Date Fair Value per Share of Grants during Period	$0	$155.40	$204.32
Total Fair Value of Awards Vested during Period	$10,783	$6,795	$9,100

StockBased_Compensation_Summar2

Stock-Based Compensation - Summary of Weighted-average Grant Date Fair Value per Share of Time-based Restricted Stock Awards Granted and Total Fair Value of Awards Vested (Parenthetical) (Detail) (Time-based Restricted Stock Awards [Member])	12 Months Ended
	Dec. 31, 2014
Time-based Restricted Stock Awards [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted-Average Grant Date Fair Value per Share of Grants during Period	0

StockBased_Compensation_Summar3

Stock-Based Compensation - Summary of Parent's Modified Time-based Restricted Stock Awards (Detail) (Modified Time-based Restricted Stock Awards [Member], USD $)	6 Months Ended	7 Months Ended	12 Months Ended
	Jun. 10, 2014	Dec. 31, 2014	Dec. 31, 2014
Modified Time-based Restricted Stock Awards [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unvested Shares, Beginning Balance	118,123	108,055	118,123
Granted, Shares	0	0	0
Vested, Shares		-775
Forfeited, Shares	-10,068
Unvested Shares, Ending Balance	108,055	107,280	107,280
Unvested Weighted-Average Grant Date Fair Value per Share, Beginning Balance	$131.83	$115.30	$131.83
Granted, Weighted-Average Grant Date Fair Value per Share	$0	$0
Vested, Weighted-Average Grant Date Fair Value per Share		$115.30
Forfeited, Weighted-Average Grant Date Fair Value per Share	$97.45
Unvested Weighted-Average Grant Date Fair Value per Share, Ending Balance	$115.30	$115.30	$115.30

StockBased_Compensation_Summar4

Stock-Based Compensation - Summary of Weighted-average Grant Date Fair Value per Share of Modified Time-based Restricted Stock Awards Granted Total Fair Value of Awards Vested (Detail) (Modified Time-based Restricted Stock Awards [Member], USD $)	12 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Modified Time-based Restricted Stock Awards [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted-Average Grant Date Fair Value per Share of Grants during Period		$114.50	$170.43
Total Fair Value of Awards Vested during Period	$0	$0	$0

StockBased_Compensation_Summar5

Stock-Based Compensation - Summary of Weighted-average Grant Date Fair Value per Share of Modified Time-based Restricted Stock Awards Granted Total Fair Value of Awards Vested (Parenthetical) (Detail) (Modified Time-based Restricted Stock Awards [Member])	6 Months Ended	7 Months Ended	12 Months Ended
	Jun. 10, 2014	Dec. 31, 2014	Dec. 31, 2014
Modified Time-based Restricted Stock Awards [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted-Average Grant Date Fair Value per Share of Grants during Period	0	0	0

StockBased_Compensation_Summar6

Stock-Based Compensation - Summary of Weighted Average Assumptions Used for Grants (Detail)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Dividend yield	0.00%	0.00%	0.00%
Expected volatility	65.00%	73.25%	75.71%
Risk-free interest rate	1.54%	0.52%	0.58%
Performance-Based Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected term (in years)		3 years 10 months 6 days	3 years 10 months 6 days
Time-based, Performance-based and Modified Time-based Restricted Stock Awards [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected term (in years)	4 years 6 months	9 years 2 months 16 days	10 years 3 months 26 days

StockBased_Compensation_Summar7

Stock-Based Compensation - Summary of Stock-based Compensation Expense (Detail) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Time-based Restricted Stock Awards [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Stock-based compensation expense	$7,000,000	$8,300,000	$4,200,000
Modified Time-based Restricted Stock Awards [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Stock-based compensation expense	2,500,000
Liability Awards [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Stock-based compensation expense	0		900,000
Management Retention Awards [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Stock-based compensation expense	900,000	1,400,000	2,300,000
Restricted Stock Sales [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Stock-based compensation expense		200,000
Selling, General and Administrative Expenses [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Stock-based compensation expense	10,552,000	9,979,000	7,328,000
Selling, General and Administrative Expenses [Member] | Time-based Restricted Stock Awards [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Stock-based compensation expense	7,037,000	8,346,000	4,192,000
Selling, General and Administrative Expenses [Member] | Modified Time-based Restricted Stock Awards [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Stock-based compensation expense	2,469,000
Selling, General and Administrative Expenses [Member] | Restricted Stock Units- Under 2014 Omnibus Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Stock-based compensation expense	100,000
Selling, General and Administrative Expenses [Member] | Liability Awards [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Stock-based compensation expense	50,000	46,000	861,000
Selling, General and Administrative Expenses [Member] | Management Retention Awards [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Stock-based compensation expense	896,000	1,416,000	2,275,000
Selling, General and Administrative Expenses [Member] | Restricted Stock Sales [Member] | Parent Guarantor [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Stock-based compensation expense		$171,000

Related_Party_and_Dow_Transact1

Related Party and Dow Transactions - Additional Information (Detail) (USD $)	0 Months Ended	1 Months Ended		12 Months Ended
In Millions, unless otherwise specified	Jun. 17, 2014	Jun. 30, 2014	Jan. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Related Party Transaction [Line Items]
Transaction services fees				$282.50	$303.20	$317.60
Related party sales				6.5	8.2	9.5
Related party purchases				290.3	274.4	269.1
IPO expenses directly related to the offering	5.1
Minimum [Member]
Related Party Transaction [Line Items]
Percentage of issued and outstanding interest in joint venture				20.00%
Maximum [Member]
Related Party Transaction [Line Items]
Percentage of issued and outstanding interest in joint venture				50.00%
Master Outsourcing Services Agreement ("MOSA") [Member]
Related Party Transaction [Line Items]
Related party agreement term				5 years
Second Amended and Restated Master Outsourcing Services Agreement ("SAR MOSA") [Member]
Related Party Transaction [Line Items]
Related party effective agreement date				1-Jun-13
Related party agreement expiration date				31-Dec-20
Related party agreement notice period for termination				2 years
notice period for non-renewal to the other party				6 months
Estimated minimum contractual obligations due in 2015				20
Estimated minimum contractual obligations due thereafter				32
Second Amended and Restated Site Services Agreements ("SAR SSAs") [Member]
Related Party Transaction [Line Items]
Related party agreement term				25 years
Related party effective agreement date				1-Jun-13
Related party agreement notice period for termination				12 months
Related party agreement notice period for termination				15 months
Transaction services fees				233.7	235.1	214.5
Second Amended and Restated Site Services Agreements ("SAR SSAs") [Member] | Minimum [Member]
Related Party Transaction [Line Items]
Related party contractual commitments period				45 months
Second Amended and Restated Site Services Agreements ("SAR SSAs") [Member] | Maximum [Member]
Related Party Transaction [Line Items]
Related party contractual commitments period				60 months
Other Agreements [Member]
Related Party Transaction [Line Items]
Transaction services fees				48.8	68.1	103.1
Dow [Member]
Related Party Transaction [Line Items]
Percentage of issued and outstanding interest in joint venture				50.00%
Payment for termination of agreement		32.5		32.5
Related party sales				343.8	294.7	311.4
Related party purchases				2,196	2,336.50	2,654.70
Related party, Accounts receivable, net of allowance				18.7	31.6
Related party, Accounts payable				156.9	218.9
Bain Capital [Member]
Related Party Transaction [Line Items]
Transaction services fees				27.9	18.6	4.6
Payment for termination of agreement		23.3		23.3
Management fee expenses				2.4	4.7	4.6
Transaction Services Agreement, period				10 years
Percentage of advisory fees				1.00%
IPO expenses directly related to the offering	2.2
Debt issuance cost			$13.90

Segments_Additional_Informatio

Segments - Additional Information (Detail)	12 Months Ended
	Dec. 31, 2014
	site
	ProductionUnits
	Plant
	Segment
	Country
Segment Reporting [Abstract]
Number of business units	2
Number of reportable segments	4
Number of manufacturing plants	34
Number of production units	81
Number of sites	26
Number of countries	14

Segments_Reconciliation_of_Seg

Segments - Reconciliation of Segment Reporting to Consolidated (Detail) (USD $)	3 Months Ended								12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Segment Reporting Information [Line Items]
Sales to external customers	$1,122,401	$1,305,493	$1,340,935	$1,359,132	$1,245,111	$1,308,959	$1,361,759	$1,391,585	$5,127,961	$5,307,414	$5,451,909
Equity in earnings (losses) of unconsolidated affiliates	18,154	9,267	5,378	14,950	12,195	15,215	8,929	2,799	47,749	39,138	27,140
EBITDA									324,197	360,523	350,974
Investment in unconsolidated affiliates	167,658				155,887				167,658	155,887	140,304
Depreciation and amortization									103,706	95,196	85,604
Operating Segments [Member] | Emulsion Polymers, Latex [Member]
Segment Reporting Information [Line Items]
Sales to external customers									1,261,137	1,341,424	1,545,064
EBITDA									93,962	95,398	125,473
Depreciation and amortization									26,954	26,092	27,037
Operating Segments [Member] | Emulsion Polymers, Synthetic Rubber [Member]
Segment Reporting Information [Line Items]
Sales to external customers									633,983	622,059	701,962
EBITDA									136,985	113,459	111,051
Depreciation and amortization									32,900	28,937	18,080
Operating Segments [Member] | Plastics, Styrenics [Member]
Segment Reporting Information [Line Items]
Sales to external customers									2,197,067	2,305,434	2,149,202
Equity in earnings (losses) of unconsolidated affiliates									50,269	39,447	27,026
EBITDA									87,496	160,724	82,947
Investment in unconsolidated affiliates	133,533				118,263				133,533	118,263	101,316
Depreciation and amortization									29,456	28,956	30,618
Operating Segments [Member] | Plastics, Engineered Polymers [Member]
Segment Reporting Information [Line Items]
Sales to external customers									1,035,774	1,038,497	1,055,681
Equity in earnings (losses) of unconsolidated affiliates									-2,520	-309	114
EBITDA									5,754	-9,058	31,503
Investment in unconsolidated affiliates	34,125				37,624				34,125	37,624	38,988
Depreciation and amortization									10,351	7,375	6,936
Corporate Unallocated [Member]
Segment Reporting Information [Line Items]
Depreciation and amortization									$4,045	$3,836	$2,933

Segments_Reconciliation_of_Seg1

Segments - Reconciliation of Segment Reporting to Consolidated (Parenthetical) (Detail) (USD $)	3 Months Ended								12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Segment Reconciliation [Abstract]
Total Segment EBITDA									$324,197	$360,523	$350,974
Corporate unallocated									-143,181	-133,658	-107,557
Less: Interest expense, net									124,923	132,038	109,971
Less Provision for income taxes									19,719	21,849	17,560
Less Depreciation and amortization									103,706	95,196	85,604
Net income (loss)	($29,687)	($10,110)	($44,621)	$17,086	$10,588	$4,936	($28,064)	($9,678)	($67,332)	($22,218)	$30,282

Segments_Schedule_of_Sales_Att

Segments - Schedule of Sales Attributed to Geographical Areas Based on Location of Sales and Long-lived Assets Attributed to Geographical Areas Based on Asset Location (Detail) (USD $)	3 Months Ended								12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Revenues from External Customers and Long-Lived Assets [Line Items]
Sales to external customers	$1,122,401	$1,305,493	$1,340,935	$1,359,132	$1,245,111	$1,308,959	$1,361,759	$1,391,585	$5,127,961	$5,307,414	$5,451,909
Long-lived assets	556,697				606,427				556,697	606,427	633,272
United States [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Sales to external customers									663,425	665,801	683,570
Long-lived assets	65,329				73,932				65,329	73,932	84,992
Europe [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Sales to external customers									3,066,581	3,186,659	3,324,064
Long-lived assets	383,311				431,494				383,311	431,494	449,834
Asia-Pacific [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Sales to external customers									1,196,163	1,214,093	1,200,747
Long-lived assets	99,654				92,691				99,654	92,691	91,885
Rest of World [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Sales to external customers									201,792	240,861	243,528
Long-lived assets	$8,403				$8,310				$8,403	$8,310	$6,561

Segments_Schedule_of_Sales_Att1

Segments - Schedule of Sales Attributed to Geographical Areas Based on Location of Sales and Long-lived Assets Attributed to Geographical Areas Based on Asset Location (Parenthetical) (Detail)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
China [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived assets, Percentage	6.00%	4.00%	4.00%
Germany [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived assets, Percentage	43.00%	44.00%	45.00%
Netherlands [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived assets, Percentage	13.00%	13.00%	13.00%
Customer Concentration Risk [Member] | China [Member] | Sales Revenue, Net [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Sales to external customers, Percentage	8.00%	8.00%	8.00%
Customer Concentration Risk [Member] | Germany [Member] | Sales Revenue, Net [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Sales to external customers, Percentage	12.00%	11.00%	10.00%
Customer Concentration Risk [Member] | Hong Kong [Member] | Sales Revenue, Net [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Sales to external customers, Percentage	11.00%	10.00%	9.00%

Restructuring_Additional_Infor

Restructuring - Additional Information (Detail) (USD $)	1 Months Ended	12 Months Ended
	Feb. 29, 2012	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2014
	Employee
Restructuring Cost and Reserve [Line Items]
Number of employee roles	90
Restructuring charges		$10,800,000	$7,500,000
Accrued expenses and other current liabilities		136,129,000		120,928,000
Other noncurrent liabilities		210,418,000		239,287,000
2012 Global Restructuring Program [Member]
Restructuring Cost and Reserve [Line Items]
Accrued charges		0		0
Altona Plant [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges		6,738,000		2,988,000
Accrued charges		4,822,000		2,128,000
Additional charges				2,800,000
Accrued expenses and other current liabilities				1,200,000
Other noncurrent liabilities				900,000
Engineered Polymers Segment [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges				3,500,000
Accrued charges				4,200,000
Engineered Polymers Segment [Member] | Dow [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges				6,600,000
Additional restructuring charges, maximum				$7,000,000

Restructuring_Rollforward_of_L

Restructuring - Rollforward of Liability Balances (Detail) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2014
Restructuring Cost and Reserve [Line Items]
Expenses	$10,800,000	$7,500,000
Altona Plant [Member]
Restructuring Cost and Reserve [Line Items]
Balance at beginning of period			4,822,000
Expenses	6,738,000		2,988,000
Deductions	-1,916,000		-5,682,000
Balance at end of period	4,822,000		2,128,000
Altona Plant [Member] | Employee Termination Benefit Charges [Member]
Restructuring Cost and Reserve [Line Items]
Balance at beginning of period			1,408,000
Expenses	2,589,000		302,000
Deductions	-1,181,000		-1,710,000
Balance at end of period	1,408,000
Altona Plant [Member] | Contract Termination Charges [Member]
Restructuring Cost and Reserve [Line Items]
Balance at beginning of period			3,388,000
Expenses	3,934,000		1,409,000
Deductions	-546,000		-2,669,000
Balance at end of period	3,388,000		2,128,000
Altona Plant [Member] | Other [Member]
Restructuring Cost and Reserve [Line Items]
Balance at beginning of period			26,000
Expenses	215,000		1,277,000
Deductions	-189,000		-1,303,000
Balance at end of period	$26,000

Accumulated_Other_Comprehensiv2

Accumulated Other Comprehensive Income (Loss) - Components of Accumulated Other Comprehensive Income (Loss), Net of Income Taxes (Detail) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other comprehensive income (loss), beginning balance	$88,378	$24,573	$53,188
Other comprehensive income (loss)	-163,595	63,805	-28,615
Other comprehensive income (loss), ending balance	-75,217	88,378	24,573
Currency Translation Adjustment, Net [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other comprehensive income (loss), beginning balance	116,146	62,807	38,935
Other comprehensive income (loss)	-133,901	53,339	23,872
Other comprehensive income (loss), ending balance	-17,755	116,146	62,807
Employee Benefits, Net [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other comprehensive income (loss), beginning balance	-27,768	-38,234	14,253
Other comprehensive income (loss)	-29,694	10,466	-52,487
Other comprehensive income (loss), ending balance	($57,462)	($27,768)	($38,234)

Earnings_Loss_Per_Share_Additi

Earnings (Loss) Per Share - Additional Information (Detail)	0 Months Ended	12 Months Ended
	30-May-14	Dec. 31, 2014
Earnings Per Share [Abstract]
Reverse stock split, description		1-for-436.69219 reverse split of its issued and outstanding common stock
Reverse stock split ratio	0.00229

Earnings_Loss_Per_Share_Schedu

Earnings (Loss) Per Share - Schedule of Earnings (Loss) per Share Basic and Diluted (Detail) (USD $)	3 Months Ended								12 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Earnings (losses):
Net income (loss) available to common shareholders	($29,687)	($10,110)	($44,621)	$17,086	$10,588	$4,936	($28,064)	($9,678)	($67,332)	($22,218)	$30,282
Shares:
Weighted average common shares outstanding									43,476	37,270	16,123
Dilutive effect of restricted stock units									0	0	0
Diluted weighted average shares outstanding									43,476	37,270	16,123
Income (loss) per share:
Income (loss) per share-basic and diluted	($0.61)	($0.21)	($1.15)	$0.46	$0.28	$0.13	($0.75)	($0.26)	($1.55)	($0.60)	$1.88

Selected_Quarterly_Financial_D2

Selected Quarterly Financial Data - Schedule of Selected Quarterly Financial Data (Detail) (USD $)	3 Months Ended								12 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Selected Quarterly Financial Information [Abstract]
Net sales	$1,122,401	$1,305,493	$1,340,935	$1,359,132	$1,245,111	$1,308,959	$1,361,759	$1,391,585	$5,127,961	$5,307,414	$5,451,909
Gross profit	38,046	68,236	92,410	98,629	115,181	96,517	65,509	80,803	297,321	358,010	336,721
Equity in earnings of unconsolidated affiliates	18,154	9,267	5,378	14,950	12,195	15,215	8,929	2,799	47,749	39,138	27,140
Operating Income	-4,035	29,390	23,580	63,549	65,524	57,960	19,664	37,142	112,484	180,290	181,792
Income (loss) before income taxes	-31,818	-6,460	-39,171	29,836	24,386	10,937	-25,914	-9,778	-47,613	-369	47,842
Net income (loss)	($29,687)	($10,110)	($44,621)	$17,086	$10,588	$4,936	($28,064)	($9,678)	($67,332)	($22,218)	$30,282
Income (loss) per share- basic and diluted	($0.61)	($0.21)	($1.15)	$0.46	$0.28	$0.13	($0.75)	($0.26)	($1.55)	($0.60)	$1.88

Selected_Quarterly_Financial_D3

Selected Quarterly Financial Data - Schedule of Selected Quarterly Financial Data (Parenthetical) (Detail) (USD $)	1 Months Ended		12 Months Ended		1 Months Ended
	Jul. 31, 2014	Jan. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Jun. 30, 2014
Selected Quarterly Financial Information [Abstract]
Loss on extinguishment of debt	$7,400,000	$20,700,000	$7,390,000	$20,744,000
Redemption of Senior Notes			132,500,000
Bain Capital [Member]
Selected Quarterly Financial Information [Abstract]
Payment for termination of Advisory Agreement			23,300,000		23,300,000
Dow [Member]
Selected Quarterly Financial Information [Abstract]
Payment for termination of Advisory Agreement			32,500,000		32,500,000
Senior Notes [Member]
Selected Quarterly Financial Information [Abstract]
Loss on extinguishment of debt			7,400,000
Redemption of Senior Notes	$132,500,000		$132,500,000

Supplemental_Guarantor_Condens2

Supplemental Guarantor Condensed Consolidating Financial Statements - Additional Information (Detail)	Dec. 31, 2014
Condensed Financial Information Of Subsidiaries Disclosure [Abstract]
Ownership interest	100.00%

Supplemental_Guarantor_Condens3

Supplemental Guarantor Condensed Consolidating Financial Statements - Supplemental Condensed Consolidating Balance Sheet (Detail) (USD $)	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
In Thousands, unless otherwise specified
Current assets
Cash and cash equivalents	$220,786	$196,503	$236,357	$245,313
Accounts receivable, net of allowance	601,066	717,482
Inventories	473,861	530,191
Deferred income tax assets	11,786	9,820
Other current assets	15,164	22,750
Total current assets	1,322,663	1,476,746
Investments in unconsolidated affiliates	167,658	155,887	140,304
Property, plant and equipment, net	556,697	606,427
Other assets
Goodwill	34,574	37,273	36,103
Other intangible assets, net	165,358	171,514
Deferred income tax assets-noncurrent	46,812	42,938
Deferred charges and other assets	62,354	83,996
Total other assets	309,098	335,721
Total assets	2,356,116	2,574,781
Current liabilities
Short-term borrowings	7,559	8,754
Accounts payable	434,692	509,093
Income taxes payable	9,413	9,683
Deferred income tax liabilities	1,413	2,903
Accrued expenses and other current liabilities	120,928	136,129
Total current liabilities	574,005	666,562
Noncurrent liabilities
Long-term debt	1,194,648	1,327,667
Deferred income tax liabilities-noncurrent	27,311	26,932
Other noncurrent obligations	239,287	210,418
Total noncurrent liabilities	1,461,246	1,565,017
Commitments and contingencies (Note 15)
Shareholder's equity	320,865	343,202	291,665	120,515
Total liabilities and shareholder's equity	2,356,116	2,574,781
Parent Guarantor [Member]
Current assets
Cash and cash equivalents	904	2	3
Intercompany receivables	55
Total current assets	959	2
Other assets
Investments in subsidiaries	327,100	343,429
Total other assets	327,100	343,429
Total assets	328,059	343,431
Current liabilities
Accounts payable	46
Intercompany payables	6,944	158
Accrued expenses and other current liabilities	204	71
Total current liabilities	7,194	229
Noncurrent liabilities
Commitments and contingencies (Note 15)
Shareholder's equity	320,865	343,202
Total liabilities and shareholder's equity	328,059	343,431
Issuers [Member]
Current assets
Cash and cash equivalents	2,653	954	29,411	93,281
Accounts receivable, net of allowance	62
Intercompany receivables	493,090	554,795
Other current assets	148	3,954
Total current assets	495,953	559,703
Other assets
Investments in subsidiaries	1,327,675	1,232,608
Intercompany notes receivable-noncurrent	1,323,401	1,359,637
Deferred charges and other assets	36,899	48,801
Total other assets	2,687,975	2,641,046
Total assets	3,183,928	3,200,749
Current liabilities
Short-term borrowings		3,646
Accounts payable	2,323	2,570
Intercompany payables	888,660	763,022
Accrued expenses and other current liabilities	52,001	58,977
Total current liabilities	942,984	828,215
Noncurrent liabilities
Long-term debt	1,192,500	1,325,000
Deferred income tax liabilities-noncurrent	2,300	1,600
Total noncurrent liabilities	1,194,800	1,326,600
Commitments and contingencies (Note 15)
Shareholder's equity	1,046,144	1,045,934
Total liabilities and shareholder's equity	3,183,928	3,200,749
Guarantor Subsidiaries [Member]
Current assets
Cash and cash equivalents	166,106	154,770	182,088	108,423
Accounts receivable, net of allowance	207,465	272,745
Intercompany receivables	1,369,837	1,242,405
Inventories	381,797	439,952
Deferred income tax assets	5,382	5,077
Other current assets	6,476	4,386
Total current assets	2,137,063	2,119,335
Investments in unconsolidated affiliates	167,658	155,887
Property, plant and equipment, net	426,905	476,137
Other assets
Goodwill	34,574	37,273
Other intangible assets, net	164,020	171,352
Investments in subsidiaries	595,755	615,153
Intercompany notes receivable-noncurrent	15,664	17,739
Deferred income tax assets-noncurrent	43,676	36,260
Deferred charges and other assets	23,398	33,607
Total other assets	877,087	911,384
Total assets	3,608,713	3,662,743
Current liabilities
Accounts payable	366,882	436,147
Intercompany payables	522,930	550,741
Income taxes payable	8,864	9,407
Deferred income tax liabilities	1,171	784
Accrued expenses and other current liabilities	55,412	66,061
Total current liabilities	955,259	1,063,140
Noncurrent liabilities
Long-term debt	2,148	2,667
Intercompany notes payable-noncurrent	1,296,121	1,347,773
Deferred income tax liabilities-noncurrent	16,145	17,115
Other noncurrent obligations	226,708	198,479
Total noncurrent liabilities	1,541,122	1,566,034
Commitments and contingencies (Note 15)
Shareholder's equity	1,112,332	1,033,569
Total liabilities and shareholder's equity	3,608,713	3,662,743
Non-Guarantor Subsidiaries [Member]
Current assets
Cash and cash equivalents	51,123	40,777	24,855	43,609
Accounts receivable, net of allowance	393,539	444,739
Intercompany receivables	101,716	93,841
Inventories	99,709	93,019
Deferred income tax assets	6,404	4,743
Other current assets	8,540	14,410
Total current assets	661,031	691,529
Property, plant and equipment, net	129,792	130,290
Other assets
Other intangible assets, net	1,338	162
Deferred income tax assets-noncurrent	3,136	6,678
Deferred charges and other assets	718	990
Total other assets	5,192	7,830
Total assets	796,015	829,649
Current liabilities
Short-term borrowings	7,559	5,108
Accounts payable	65,441	70,378
Intercompany payables	546,150	576,354
Income taxes payable	549	276
Deferred income tax liabilities	242	2,119
Accrued expenses and other current liabilities	13,311	11,020
Total current liabilities	633,252	665,255
Noncurrent liabilities
Intercompany notes payable-noncurrent	42,944	29,602
Deferred income tax liabilities-noncurrent	8,866	8,217
Other noncurrent obligations	12,579	11,939
Total noncurrent liabilities	64,389	49,758
Commitments and contingencies (Note 15)
Shareholder's equity	98,374	114,636
Total liabilities and shareholder's equity	796,015	829,649
Eliminations [Member]
Current assets
Accounts receivable, net of allowance		-2
Intercompany receivables	-1,964,698	-1,891,041
Inventories	-7,645	-2,780
Total current assets	-1,972,343	-1,893,823
Other assets
Investments in subsidiaries	-2,250,530	-2,191,190
Intercompany notes receivable-noncurrent	-1,339,065	-1,377,376
Deferred charges and other assets	1,339	598
Total other assets	-3,588,256	-3,567,968
Total assets	-5,560,599	-5,461,791
Current liabilities
Accounts payable		-2
Intercompany payables	-1,964,684	-1,890,275
Total current liabilities	-1,964,684	-1,890,277
Noncurrent liabilities
Intercompany notes payable-noncurrent	-1,339,065	-1,377,375
Total noncurrent liabilities	-1,339,065	-1,377,375
Commitments and contingencies (Note 15)
Shareholder's equity	-2,256,850	-2,194,139
Total liabilities and shareholder's equity	($5,560,599)	($5,461,791)

Supplemental_Guarantor_Condens4

Supplemental Guarantor Condensed Consolidating Financial Statements - Supplemental Condensed Consolidating Statement of Comprehensive Income (Loss) (Detail) (USD $)	1 Months Ended		3 Months Ended								12 Months Ended
In Thousands, unless otherwise specified	Jul. 31, 2014	Jan. 31, 2013	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Condensed Financial Statements, Captions [Line Items]
Net sales			$1,122,401	$1,305,493	$1,340,935	$1,359,132	$1,245,111	$1,308,959	$1,361,759	$1,391,585	$5,127,961	$5,307,414	$5,451,909
Cost of sales											4,830,640	4,949,404	5,115,188
Gross profit			38,046	68,236	92,410	98,629	115,181	96,517	65,509	80,803	297,321	358,010	336,721
Selling, general and administrative expenses											232,586	216,858	182,069
Equity in earnings of unconsolidated affiliates			18,154	9,267	5,378	14,950	12,195	15,215	8,929	2,799	47,749	39,138	27,140
Operating income (loss)			-4,035	29,390	23,580	63,549	65,524	57,960	19,664	37,142	112,484	180,290	181,792
Interest expense, net											124,923	132,038	109,971
Loss on extinguishment of long-term debt	7,400	20,700									7,390	20,744
Other expense (income), net											27,784	27,877	23,979
Income (loss) before income taxes			-31,818	-6,460	-39,171	29,836	24,386	10,937	-25,914	-9,778	-47,613	-369	47,842
Provision for (benefit from) income taxes											19,719	21,849	17,560
Net income (loss)			-29,687	-10,110	-44,621	17,086	10,588	4,936	-28,064	-9,678	-67,332	-22,218	30,282
Comprehensive income (loss)											-230,927	41,587	1,667
Eliminations [Member]
Condensed Financial Statements, Captions [Line Items]
Net sales											-922,694	-962,307	-1,109,462
Cost of sales											-917,769	-964,453	-1,109,189
Gross profit											-4,925	2,146	-273
Operating income (loss)											-4,925	2,146	-273
Intercompany interest expense (income), net											28	-1	-48
Other expense (income), net											-17	15	-11
Equity in loss (earnings) of subsidiaries											-22,729	35,591	166,811
Income (loss) before income taxes											17,793	-33,459	-167,025
Provision for (benefit from) income taxes											-741	553	-52
Net income (loss)											18,534	-34,012	-166,973
Comprehensive income (loss)											345,724	-161,622	-109,743
Parent Guarantor [Member]
Condensed Financial Statements, Captions [Line Items]
Selling, general and administrative expenses											11,822	10,073	7,374
Operating income (loss)											-11,822	-10,073	-7,374
Intercompany interest expense (income), net											12	7	1
Other expense (income), net											6,330	6	4
Equity in loss (earnings) of subsidiaries											49,132	12,128	-37,661
Income (loss) before income taxes											-67,296	-22,214	30,282
Provision for (benefit from) income taxes											36	4
Net income (loss)											-67,332	-22,218	30,282
Comprehensive income (loss)											-230,927	41,587	1,667
Issuers [Member]
Condensed Financial Statements, Captions [Line Items]
Cost of sales											560	996	279
Gross profit											-560	-996	-279
Selling, general and administrative expenses											18,405	3,981	3,994
Operating income (loss)											-18,965	-4,977	-4,273
Interest expense, net											120,910	125,711	104,069
Intercompany interest expense (income), net											-81,551	-88,851	-88,245
Loss on extinguishment of long-term debt											7,390	20,744
Other expense (income), net											17,742	-32,325	-20,515
Equity in loss (earnings) of subsidiaries											-59,281	-44,373	-53,200
Income (loss) before income taxes											-24,175	14,117	53,618
Provision for (benefit from) income taxes											1,409	1,735	-808
Net income (loss)											-25,584	12,382	54,426
Comprehensive income (loss)											-189,179	76,187	25,811
Guarantor Subsidiaries [Member]
Condensed Financial Statements, Captions [Line Items]
Net sales											4,684,218	4,793,183	4,947,970
Cost of sales											4,425,078	4,485,470	4,691,834
Gross profit											259,140	307,713	256,136
Selling, general and administrative expenses											180,730	181,756	147,454
Equity in earnings of unconsolidated affiliates											47,749	39,138	27,140
Operating income (loss)											126,159	165,095	135,822
Interest expense, net											1,535	3,656	917
Intercompany interest expense (income), net											69,902	76,042	76,510
Other expense (income), net											-3,323	39,534	21,376
Equity in loss (earnings) of subsidiaries											32,878	-3,346	-75,950
Income (loss) before income taxes											25,167	49,209	112,969
Provision for (benefit from) income taxes											15,004	16,964	22,159
Net income (loss)											10,163	32,245	90,810
Comprehensive income (loss)											-150,388	91,240	59,111
Non-Guarantor Subsidiaries [Member]
Condensed Financial Statements, Captions [Line Items]
Net sales											1,366,437	1,476,538	1,613,401
Cost of sales											1,322,771	1,427,391	1,532,264
Gross profit											43,666	49,147	81,137
Selling, general and administrative expenses											21,629	21,048	23,247
Operating income (loss)											22,037	28,099	57,890
Interest expense, net											2,478	2,671	4,985
Intercompany interest expense (income), net											11,609	12,803	11,782
Other expense (income), net											7,052	20,647	23,125
Income (loss) before income taxes											898	-8,022	17,998
Provision for (benefit from) income taxes											4,011	2,593	-3,739
Net income (loss)											-3,113	-10,615	21,737
Comprehensive income (loss)											($6,157)	($5,805)	$24,821

Supplemental_Guarantor_Condens5

Supplemental Guarantor Condensed Consolidating Financial Statements - Supplemental Condensed Consolidating Statement of Cash Flows (Detail) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Cash flows from operating activities
Cash provided by (used in) operating activities	$117,221	$211,335	$186,115
Cash flows from investing activities
Capital expenditures	-98,606	-73,544	-118,504
Proceeds from capital expenditures subsidy		18,769	6,079
Proceeds from the sale of businesses and assets	6,257	15,221	253
Advance payment received (refunded)		-2,711	2,602
Payment for working capital adjustment from sale of business	-700
Distributions from unconsolidated affiliates	978	1,055
(Increase) / decrease in restricted cash	-533	7,852	-7,725
Cash used in investing activities	-92,604	-33,358	-117,295
Cash flows from financing activities
Deferred financing fees		-48,255	-8,080
Proceeds from initial public offering, net of offering costs	198,087
Short-term borrowings, net	-56,901	-42,877	-37,887
Capital contributions from shareholder			162,155
Repayments of Senior Notes	-132,500
Repayments of Term Loans		-1,239,000	-147,000
Proceeds from issuance of Senior Notes		1,325,000
Proceeds from Accounts Receivable Securitization Facility	308,638	376,630	113,828
Repayments of Accounts Receivable Securitization Facility	-309,205	-471,696	-130,233
Proceeds from the draw of revolving debt		405,000	1,105,000
Repayments on the revolving debt		-525,000	-1,135,000
Cash provided by (used in) financing activities	8,119	-220,198	-77,217
Effect of exchange rates on cash	-8,453	2,367	-559
Net change in cash and cash equivalents	24,283	-39,854	-8,956
Cash and cash equivalents-beginning of period	196,503	236,357	245,313
Cash and cash equivalents-end of period	220,786	196,503	236,357
Parent Guarantor [Member]
Cash flows from operating activities
Cash provided by (used in) operating activities	-1,079	-78	-48
Cash flows from investing activities
Investments in subsidiaries	-196,400		-162,155
Cash used in investing activities	-196,400		-162,155
Cash flows from financing activities
Proceeds from initial public offering, net of offering costs	198,087
Intercompany short-term borrowings, net	295	77	51
Capital contributions from shareholder			162,155
Cash provided by (used in) financing activities	198,382	77	162,206
Effect of exchange rates on cash	-1
Net change in cash and cash equivalents	902	-1	3
Cash and cash equivalents-beginning of period	2	3
Cash and cash equivalents-end of period	904	2	3
Issuers [Member]
Cash flows from operating activities
Cash provided by (used in) operating activities	-58,667	27,101	7,865
Cash flows from investing activities
Investments in subsidiaries	-199,400
Intercompany investing activities	2,462	-4,000	144,463
Cash used in investing activities	-196,938	-4,000	144,463
Cash flows from financing activities
Deferred financing fees		-47,488	-7,392
Intercompany short-term borrowings, net	14,254	37,793	-49,818
Short-term borrowings, net	-3,646	-7,727	-4,159
Contributions from parent companies	189,400		22,155
Repayments of Senior Notes	-132,500
Proceeds from (repayments of) intercompany long-term debt and indebtedness	189,400
Repayments of Term Loans		-1,239,000	-147,000
Proceeds from issuance of Senior Notes		1,325,000
Proceeds from the draw of revolving debt		405,000	1,105,000
Repayments on the revolving debt		-525,000	-1,135,000
Cash provided by (used in) financing activities	256,908	-51,422	-216,214
Effect of exchange rates on cash	396	-136	16
Net change in cash and cash equivalents	1,699	-28,457	-63,870
Cash and cash equivalents-beginning of period	954	29,411	93,281
Cash and cash equivalents-end of period	2,653	954	29,411
Guarantor Subsidiaries [Member]
Cash flows from operating activities
Cash provided by (used in) operating activities	107,137	34,470	113,446
Cash flows from investing activities
Capital expenditures	-85,021	-61,573	-110,746
Proceeds from capital expenditures subsidy		18,769	6,079
Proceeds from the sale of businesses and assets		15,221	206
Payment for working capital adjustment from sale of business	-700
Distributions from unconsolidated affiliates	978	1,055
Investments in subsidiaries	-196,626		-22,155
Intercompany investing activities	-181,036	-43,012	68,268
(Increase) / decrease in restricted cash	-533
Cash used in investing activities	-462,938	-69,540	-58,348
Cash flows from financing activities
Deferred financing fees		-767	-688
Intercompany short-term borrowings, net	-34,986	5,991	1,444
Short-term borrowings, net	-273	-267	-407
Contributions from parent companies	395,800		162,155
Proceeds from (repayments of) intercompany long-term debt and indebtedness	13,000		-144,183
Cash provided by (used in) financing activities	373,541	4,957	18,321
Effect of exchange rates on cash	-6,404	2,795	246
Net change in cash and cash equivalents	11,336	-27,318	73,665
Cash and cash equivalents-beginning of period	154,770	182,088	108,423
Cash and cash equivalents-end of period	166,106	154,770	182,088
Non-Guarantor Subsidiaries [Member]
Cash flows from operating activities
Cash provided by (used in) operating activities	81,641	149,842	64,852
Cash flows from investing activities
Capital expenditures	-13,585	-11,971	-7,758
Proceeds from the sale of businesses and assets	6,257		47
Advance payment received (refunded)		-2,711	2,602
(Increase) / decrease in restricted cash		7,852	-7,725
Cash used in investing activities	-7,328	-6,830	-12,834
Cash flows from financing activities
Intercompany short-term borrowings, net	-927	-849	-18,625
Short-term borrowings, net	-52,982	-34,883	-33,321
Contributions from parent companies	7,226
Distributions to parent companies	-11,811
Proceeds from (repayments of) intercompany long-term debt and indebtedness	-2,462	4,000	-1,600
Proceeds from Accounts Receivable Securitization Facility	308,638	376,630	113,828
Repayments of Accounts Receivable Securitization Facility	-309,205	-471,696	-130,233
Cash provided by (used in) financing activities	-61,523	-126,798	-69,951
Effect of exchange rates on cash	-2,444	-292	-821
Net change in cash and cash equivalents	10,346	15,922	-18,754
Cash and cash equivalents-beginning of period	40,777	24,855	43,609
Cash and cash equivalents-end of period	51,123	40,777	24,855
Eliminations [Member]
Cash flows from operating activities
Cash provided by (used in) operating activities	-11,811
Cash flows from investing activities
Investments in subsidiaries	592,426		184,310
Intercompany investing activities	178,574	47,012	-212,731
Cash used in investing activities	771,000	47,012	-28,421
Cash flows from financing activities
Intercompany short-term borrowings, net	21,364	-43,012	66,948
Contributions from parent companies	-592,426		-184,310
Distributions to parent companies	11,811
Proceeds from (repayments of) intercompany long-term debt and indebtedness	-199,938	-4,000	145,783
Cash provided by (used in) financing activities	($759,189)	($47,012)	$28,421

Schedule_II_Financial_Statemen

Schedule II - Financial Statement Schedule Valuation and Qualifying Accounts (Detail) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Allowance for Doubtful Accounts [Member]
Valuation and Qualifying Accounts Disclosure [Line Items]
Balance at Beginning of the Period	$5.90	$8.40	$8.70
Additions, Charged to Cost and Expense	1.1	-3	0.3
Deduction from Reserves	0	-0.1	-0.3
Additions, Currency Translation Adjustments	-0.7	0.6	-0.3
Balance at End of the Period	6.3	5.9	8.4
Valuation Allowance of Deferred Tax Assets [Member]
Valuation and Qualifying Accounts Disclosure [Line Items]
Balance at Beginning of the Period	50.4	41.3	47.4
Additions, Charged to Cost and Expense	18.2	10.7	-5.5
Additions, Currency Translation Adjustments	-1.7	-1.6	-0.6
Balance at End of the Period	$66.90	$50.40	$41.30

Schedule_II_Financial_Statemen1

Schedule II - Financial Statement Schedule Valuation and Qualifying Accounts (Parenthetical) (Detail) (Maximum [Member], USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2014
Maximum [Member]
Valuation and Qualifying Accounts Disclosure [Line Items]
Amounts written off, net of recoveries	$0.10