Trinseo (TSE) 10-Q8 May 152015 Q1 Quarterly reportFinancial data

Company Profile

Document_and_Entity_Informatio

Document and Entity Information	3 Months Ended
Document and Entity Information	Mar. 31, 2015	7-May-15
Document And Entity Information [Abstract]
Document Type	10-Q
Amendment Flag	FALSE
Document Period End Date	31-Mar-15
Document Fiscal Year Focus	2015
Document Fiscal Period Focus	Q1
Trading Symbol	TSE
Entity Registrant Name	Trinseo S.A.
Entity Central Index Key	1519061
Current Fiscal Year End Date	-19
Entity Filer Category	Non-accelerated Filer
Entity Common Stock, Shares Outstanding		48,769,567

Condensed_Consolidated_Balance

Condensed Consolidated Balance Sheets (USD $)	Mar. 31, 2015	Dec. 31, 2014
In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Current assets
Cash and cash equivalents	$218,697	$220,786
Accounts receivable, net of allowance for doubtful accounts (March 31, 2015-$4,988; December 31, 2014-$6,268)	590,065	601,066
Inventories	390,972	473,861
Deferred income tax assets	8,423	11,786
Other current assets	11,378	15,164
Total current assets	1,219,535	1,322,663
Investments in unconsolidated affiliates	189,364	167,658
Property, plant and equipment, net of accumulated depreciation (March 31, 2015-$315,614; December 31, 2014-$324,383)	505,105	556,697
Other assets
Goodwill	30,540	34,574
Other intangible assets, net	145,326	165,358
Deferred income tax assets-noncurrent	48,220	46,812
Deferred charges and other assets	57,006	62,354
Total other assets	281,092	309,098
Total assets	2,195,096	2,356,116
Current liabilities
Short-term borrowings	4,139	7,559
Accounts payable	395,031	434,692
Income taxes payable	15,968	9,413
Deferred income tax liabilities	1,930	1,413
Accrued expenses and other current liabilities	84,746	120,928
Total current liabilities	501,814	574,005
Noncurrent liabilities
Long-term debt	1,194,621	1,194,648
Deferred income tax liabilities-noncurrent	29,146	27,311
Other noncurrent obligations	220,607	239,287
Total noncurrent liabilities	1,444,374	1,461,246
Commitments and contingencies (Note 10)
Shareholders' equity
Common stock, $0.01 nominal value, 50,000,000 shares authorized at March 31, 2015 and December 31, 2014, and 48,770 shares issued and outstanding at March 31, 2015 and December 31, 2014	488	488
Additional paid-in-capital	550,152	547,530
Accumulated deficit	-114,232	-151,936
Accumulated other comprehensive loss	-187,500	-75,217
Total shareholders' equity	248,908	320,865
Total liabilities and shareholders' equity	$2,195,096	$2,356,116

Condensed_Consolidated_Balance1

Condensed Consolidated Balance Sheets (Parenthetical) (USD $)	Mar. 31, 2015	Dec. 31, 2014
In Thousands, except Share data, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Statement of Financial Position [Abstract]
Allowance for doubtful accounts	$4,988	$6,268
Accumulated depreciation	$315,614	$324,383
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	48,770,000
Common stock, shares outstanding	48,770,000	48,770,000

Condensed_Consolidated_Stateme

Condensed Consolidated Statements of Operations (USD $)	3 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Income Statement [Abstract]
Net sales	$1,018,265	$1,359,132
Cost of sales	915,186	1,260,503
Gross profit	103,079	98,629
Selling, general and administrative expenses	51,775	50,030
Equity in earnings of unconsolidated affiliates	36,707	14,950
Operating income	88,011	63,549
Interest expense, net	28,856	32,818
Other expense, net	3,551	895
Income before income taxes	55,604	29,836
Provision for income taxes	17,900	12,750
Net income	$37,704	$17,086
Weighted average shares- basic	48,770	37,270
Net income per share- basic	$0.77	$0.46
Weighted average shares- diluted	48,851	37,270
Net income per share- diluted	$0.77	$0.46

Condensed_Consolidated_Stateme1

Condensed Consolidated Statements of Comprehensive Income (Loss) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015		Mar. 31, 2014
Statement of Comprehensive Income [Abstract]
Net income	$37,704		$17,086
Other comprehensive income (loss), net of tax (tax amounts shown in millions below for the three months ended March 31, 2015 and 2014, respectively):
Cumulative translation adjustments	-114,155		-1,425
Unrealized gain on foreign exchange cash flow hedges (net of tax of: 2015-$0.1; 2014-$0.0)	1,035
Amounts reclassified from accumulated other comprehensive income:
Amortization of prior service credit (net of tax of: 2015-$(0.1); 2014-$0.0)	-340	[1]	-214	[1]
Amortization of net loss (net of tax of: 2015-$0.4; 2014-$0.1)	1,177	[1]	458	[1]
Total other comprehensive loss, net of tax	-112,283		-1,181
Comprehensive income (loss)	($74,579)		$15,905

[1]	These other comprehensive income (loss) components are included in the computation of net periodic benefit costs (see Note 11).

Condensed_Consolidated_Stateme2

Condensed Consolidated Statements of Comprehensive Income (Loss) (Parenthetical) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2015		Mar. 31, 2014
Statement of Comprehensive Income [Abstract]
Unrealized gain on foreign exchange cash flow hedges, tax	$0.10		$0
Amortization of prior service credit, tax	-0.1	[1]	0	[1]
Amortization of net loss, tax	$0.40	[1]	$0.10	[1]

[1]	These other comprehensive income (loss) components are included in the computation of net periodic benefit costs (see Note 11).

Condensed_Consolidated_Stateme3

Condensed 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	Total	Common Stock [Member]	Additional Paid-In Capital [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Accumulated Deficit [Member]
Balance at Dec. 31, 2013	$343,202	$373	$339,055	$88,378	($84,604)
Balance, Shares at Dec. 31, 2013		37,270
Net income	17,086				17,086
Other comprehensive loss	-1,181			-1,181
Stock-based compensation	2,689		2,689
Balance at Mar. 31, 2014	361,796	373	341,744	87,197	-67,518
Balance, Shares at Mar. 31, 2014		37,270
Balance at Dec. 31, 2014	320,865	488	547,530	-75,217	-151,936
Balance, Shares at Dec. 31, 2014		48,770
Net income	37,704				37,704
Other comprehensive loss	-112,283			-112,283
Stock-based compensation	2,622		2,622
Balance at Mar. 31, 2015	$248,908	$488	$550,152	($187,500)	($114,232)
Balance, Shares at Mar. 31, 2015		48,770

Condensed_Consolidated_Stateme4

Condensed Consolidated Statements of Cash Flows (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Cash flows from operating activities
Net income	$37,704	$17,086
Adjustments to reconcile net income to net cash provided by (used in) operating activities
Depreciation and amortization	22,554	23,728
Amortization of deferred financing costs	2,446	2,516
Deferred income tax	3,775	5,458
Stock-based compensation	2,622	2,689
Earnings of unconsolidated affiliates, net of dividends	-21,707	-9,950
Unrealized net losses on foreign exchange forward contracts	2,815
Changes in assets and liabilities
Accounts receivable	-42,091	-79,204
Inventories	53,722	20,148
Accounts payable and other current liabilities	-11,944	18,522
Income taxes payable	7,074	-720
Other assets, net	3,892	-2,649
Other liabilities, net	-17,948	1,193
Cash provided by (used in) operating activities	42,914	-1,183
Cash flows from investing activities
Capital expenditures	-27,670	-41,141
Proceeds from the sale of businesses and other assets	560
Payment for working capital adjustment from sale of business		-700
Distributions from unconsolidated affiliates		978
Cash used in investing activities	-27,110	-40,863
Cash flows from financing activities
Short-term borrowings, net	-9,487	-14,837
Proceeds from Accounts Receivable Securitization Facility		60,971
Repayments of Accounts Receivable Securitization Facility		-61,538
Cash used in financing activities	-9,487	-15,404
Effect of exchange rates on cash	-8,406	36
Net change in cash and cash equivalents	-2,089	-57,414
Cash and cash equivalents-beginning of period	220,786	196,503
Cash and cash equivalents-end of period	$218,697	$139,089

Basis_of_Presentation

Basis of Presentation	3 Months Ended
Basis of Presentation	Mar. 31, 2015
Accounting Policies [Abstract]
Basis of Presentation	NOTE 1—BASIS OF PRESENTATION
	The unaudited interim condensed consolidated financial statements of Trinseo S.A. and its subsidiaries (the “Company”) as of and for the periods ended March 31, 2015 and 2014 were prepared in accordance with accounting principles generally accepted in the United States of America (“GAAP”) and reflect all adjustments, consisting only of normal recurring adjustments, which, in the opinion of management, are considered necessary for the fair statement of the results for the periods presented. Because they cover interim periods, the statements and related notes to the financial statements do not include all disclosures normally provided in annual financial statements and, therefore, these statements should be read in conjunction with the 2014 audited consolidated financial statements included within the Company’s Annual Report on Form 10-K (“Annual Report”) filed with the Securities and Exchange Commission (“SEC”) on March 10, 2015.
	The December 31, 2014 condensed consolidated balance sheet data presented herein was derived from the Company’s December 31, 2014 audited consolidated financial statements, but does not include all disclosures required by GAAP for annual periods.
	Reverse Stock Split and Initial Public Offering
	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, the Company 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 of 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.
	Company Realignment
	Until January 1, 2015, the chief executive officer, who is the Company’s chief operating decision maker, managed the Company’s operations under two divisions, Emulsion Polymers and Plastics, which included the following four reporting segments: Latex, Synthetic Rubber, Styrenics, and Engineered Polymers.
	Effective January 1, 2015, the Company was reorganized under two new divisions called Performance Materials and Basic Plastics & Feedstocks. The Performance Materials division now includes the following reporting segments: Synthetic Rubber, Latex, and Performance Plastics. The Basic Plastics & Feedstocks division represents a separate segment for financial reporting purposes. These condensed consolidated financial statements and related notes thereto have been retroactively adjusted to reflect this change in reporting segments. See Note 14 for more information.

Recent_Accounting_Guidance

Recent Accounting Guidance	3 Months Ended
Recent Accounting Guidance	Mar. 31, 2015
Accounting Changes and Error Corrections [Abstract]
Recent Accounting Guidance	NOTE 2—RECENT ACCOUNTING GUIDANCE
	In April 2014, the Financial Accounting Standards Board (“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 Company adopted this guidance effective January 1, 2015, and the adoption did not have a significant impact on the Company’s financial position, results of operations, or disclosures.
	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. In April 2015, the FASB proposed to defer the effective date of this new guidance by one year. If the proposal is approved, subject to the FASB’s due process requirement, early adoption would be permitted as of the original effective date, and the standard would be effective for the Company beginning January 1, 2018. The Company is currently assessing the impact of adopting this guidance on its financial statements and results of operations.

	In January 2015, the FASB issued guidance to simplify income statement classification by removing the concept of extraordinary items from GAAP. The Company adopted this guidance effective January 1, 2015, and the adoption did not have a significant impact on the Company’s financial position or results of operations.
	In April 2015, the FASB issued guidance that requires debt issuance costs related to a recognized debt liability be presented in the balance sheet as a direct deduction from the carrying value of that debt liability, consistent with debt discounts. The recognition and measurement guidance for debt issuance costs are not affected. This new guidance, which is to be applied on a retrospective basis, is effective for public companies for annual and interim periods beginning after December 31, 2015, with early adoption permitted. The Company will adopt this guidance effective January 1, 2016.

Investments_in_Unconsolidated_

Investments in Unconsolidated Affiliates	3 Months Ended
	Mar. 31, 2015
Equity Method Investments and Joint Ventures [Abstract]
Investments in Unconsolidated Affiliates	NOTE 3—INVESTMENTS IN UNCONSOLIDATED AFFILIATES
	The Company is supplemented by two strategic joint ventures, the results of which are included within the Basic Plastics & Feedstocks reporting segment: Americas Styrenics LLC (“Americas Styrenics”, a polystyrene joint venture with Chevron Phillips Chemical Company LP) and Sumika Styron Polycarbonate Limited (“Sumika Styron Polycarbonate”, a polycarbonate joint venture with Sumitomo Chemical Company, Limited). Investments held in the unconsolidated affiliates are accounted for by the equity method.
	As of March 31, 2015 and December 31, 2014, respectively, the Company’s investment in Americas Styrenics was $153.7 million and $133.5 million, which was $104.5 million and $108.4 million less than the Company’s 50% share of the underlying net assets of Americas Styrenics. This amount represents 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 5.5 years as of March 31, 2015. The Company received dividends from Americas Styrenics of $15.0 million and $5.0 million during the three months ended March 31, 2015 and 2014, respectively.
	As of March 31, 2015 and December 31, 2014, respectively, the Company’s investment in Sumika Styron Polycarbonate was $35.6 million and $34.1 million, which was $21.0 million and $21.3 million greater than the Company’s 50% share of the underlying net assets of Sumika Styron Polycarbonate. This amount represents the fair value of certain identifiable assets which have not been recorded on the historical financial statements of Sumika Styron Polycarbonate. This difference is being amortized over the remaining useful life of the contributed assets of 10.5 years as of March 31, 2015. The Company received dividends from Sumika Styron Polycarbonate of $1.0 million during the three months ended March 31, 2014, with no dividends received during the three months ended March 31, 2015.
	Both of the unconsolidated affiliates 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:


		Three Months Ended
		March 31,
		2015		2014
	Sales	$	439,570	$	564,132
	Gross profit	$	77,670	$	38,008
	Net income	$	66,019	$	21,520

Inventories

Inventories	3 Months Ended
Inventories	Mar. 31, 2015
Inventory Disclosure [Abstract]
Inventories	NOTE 4—INVENTORIES
	Inventories consisted of the following:


		March 31,		December 31,
		2015		2014
	Finished goods	$	197,762	$	235,949
	Raw materials and semi-finished goods		162,647		205,061
	Supplies		30,563		32,851

	Total	$	390,972	$	473,861

Goodwill_and_Intangible_Assets

Goodwill and Intangible Assets	3 Months Ended
Goodwill and Intangible Assets	Mar. 31, 2015
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill and Intangible Assets	NOTE 5—GOODWILL AND INTANGIBLE ASSETS
	Goodwill
	The following table shows changes in the carrying amount of goodwill by segment from December 31, 2014 to March 31, 2015:


		Performance Materials
		Latex			Synthetic			Performance			Basic Plastics			Total
		Latex			Rubber			Plastics			& Feedstocks			Total
	Balance at December 31, 2014	$	13,815		$	9,461		$	3,243		$	8,055		$	34,574
	Foreign currency impact		(1,612	)		(1,104	)		(378	)		(940	)		(4,034	)

	Balance at March 31, 2015	$	12,203		$	8,357		$	2,865		$	7,115		$	30,540

	Other Intangible Assets
	The following table provides information regarding the Company’s other intangible assets as of March 31, 2015 and December 31, 2014, respectively:


					March 31, 2015									December 31, 2014
		Estimated			Gross			Accumulated			Net			Gross			Accumulated			Net
		Useful Life			Carrying			Amortization						Carrying			Amortization
		(Years)			Amount									Amount
	Developed technology		15		$	166,823		$	(53,003	)	$	113,820		$	188,854		$	(56,782	)	$	132,072
	Manufacturing Capacity Rights		6			20,400			(3,308	)		17,092			23,095			(2,809	)		20,286
	Software		5			13,581			(7,078	)		6,503			13,177			(6,441	)		6,736
	Software in development		N/A			7,678			—			7,678			6,000			—			6,000
	Other		N/A			233			—			233			264			—			264
	Total				$	208,715		$	(63,389	)	$	145,326		$	231,390		$	(66,032	)	$	165,358

	Amortization expense on other intangible assets totaled $4.5 million and $4.0 million for the three months ended March 31, 2015 and 2014, 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
	Remainder of 2015	$	13,108
	2016		16,918
	2017		16,083
	2018		15,396
	2019		15,151
	2020		11,903

Debt

Debt	3 Months Ended
Debt	Mar. 31, 2015
Debt Disclosure [Abstract]
Debt	NOTE 6—DEBT
	Debt consisted of the following:


		March 31,			December 31,
		2015			2014
	Senior Secured Credit Facility
	Revolving Facility	$	—		$	—
	Senior Notes		1,192,500			1,192,500
	Accounts Receivable Securitization Facility		—			—
	Other indebtedness		6,260			9,707

	Total debt		1,198,760			1,202,207
	Less: short-term borrowings		(4,139	)		(7,559	)

	Total long-term debt	$	1,194,621		$	1,194,648

	Senior Secured Credit Facility
	In January 2013, the Company amended its credit agreement (“Senior Secured Credit Facility”) to, among other things, increase the Company’s revolving credit facility (“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, the Company repaid its then outstanding term loans under the Senior Secured Credit Facility (the “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 (“Senior Notes”) issued in January 2013 (refer below for further discussion).
	This amendment replaced the Company’s total leverage ratio requirement with a first lien net leverage ratio (as defined under the amended agreement) 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 of March 31, 2015, the Company was in compliance with all debt covenant requirements under the Senior Secured Credit Facility.
	As of March 31, 2015, the Company had no outstanding borrowings, and had $291.2 million (net of $8.8 million outstanding letters of credit) of funds available for borrowings under the Revolving Facility.
	Senior Notes
	In January 2013, the Company issued $1,325.0 million 8.750% Senior Notes under the indenture. 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 original 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 1), 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. 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 (as defined above), 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 effectively 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 the Company’s 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 Company’s ability and the ability of the Company’s 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 March 31, 2015, the Company was in compliance with all debt covenant requirements under the indenture.
	Accounts Receivable Securitization Facility
	In May 2013, the Company amended its existing accounts receivable securitization facility (“Accounts Receivable Securitization Facility”) which increased its borrowing capacity from $160.0 million to $200.0 million, extended the maturity date to May 2016 and allows for the expansion of the pool of eligible accounts receivable to include previously excluded U.S. and Netherlands subsidiaries.
	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 the Accounts Receivable Securitization Facility, in regards to outstanding borrowings, fixed interest charges decreased from 3.25% plus commercial paper rates to 2.60% plus variable commercial paper rates. In regards to available, but undrawn borrowings, fixed interest charges decreased from 1.50% to 1.40%.
	As of March 31, 2015 and December 31, 2014, there were no amounts outstanding under the Accounts Receivable Securitization Facility, with approximately $147.7 million and $136.1 million, respectively, of accounts receivable available to support this facility, based on the pool of eligible accounts receivable.

Derivative_Instruments

Derivative Instruments	3 Months Ended
Derivative Instruments	Mar. 31, 2015
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivative Instruments	NOTE 7— DERIVATIVE INSTRUMENTS
	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.
	As of March 31, 2015, the Company had open foreign exchange forward contracts with a net notional U.S. dollar equivalent of $33.8 million. The following table displays the notional amounts of the most significant net foreign exchange hedge positions outstanding as of March 31, 2015.


	Buy / (Sell)		March 31,
	Buy / (Sell)		2015
	Euro		$	167,979
	Chinese Yuan		$	(97,476	)
	Swiss Franc		$	40,700
	Indonesian Rupiah		$	(37,450	)
	British Pound		$	(12,157	)
	Foreign Exchange Cash Flow Hedges
	In March 2015, the Company entered into forward contracts with the objective of managing the currency risk associated with forecasted U.S. dollar-denominated raw materials purchases by one of its subsidiaries whose functional currency is the euro. By entering into these forward contracts, which are designated as cash flow hedges, the Company will sell a designated amount of euros and buy U.S. dollars at the prevailing market rate to mitigate the risk associated with the fluctuations in the euro-to-U.S. dollar foreign currency exchange rates. The qualifying hedge contracts are marked-to-market at each reporting date and any unrealized gains or losses are included in accumulated other comprehensive income to the extent effective, and reclassified to cost of goods sold in the period during which the transaction affects earnings or it becomes probable that the forecasted transaction will not occur.
	The foreign exchange cash flow hedges, all of which remained open as of March 31, 2015, have maturities occurring over a period of 18 months, and have a net notional U.S. dollar equivalent of $90.0 million.
	Summary of Derivative Instruments
	Information regarding changes in the fair value of the Company’s derivative instruments, including those not designated for hedge accounting treatment is as follows:


			Gain (Loss) Recognized in								Gain (Loss) Recognized in
			Other Comprehensive								Statement of Operations
			Income (Loss) on Balance Sheet
			Three Months Ended March 31,													Statement of Operations
			2015				2014				2015			2014		Classification
	Designated as Cash Flow Hedges
	Foreign exchange cash flow hedges		$	1,035			$	—			$	—		$	—	Cost of sales

	Total		$	1,035			$	—			$	—		$	—


	Not Designated as Hedges
	Foreign exchange forward contracts		$	—			$	—			$	(20,962	)	$	—	Other expense, net

	Total		$	—			$	—			$	(20,962	)	$	—

	The Company recorded losses from settlements and changes in the fair value of outstanding forward contracts (not designated as hedges) of $21.0 million during the three months ended March 31, 2015. These losses offset net foreign exchange transaction gains of $18.0 million during the quarter, which resulted from the remeasurement of the Company’s foreign currency denominated assets and liabilities. The cash settlements of these foreign exchange forward contracts are included within operating activities in the condensed consolidated statement of cash flows.
	As of March 31, 2015, none of the foreign exchange cash flow hedges entered into during the quarter had settled. As a result, no amounts have been reclassified out of other comprehensive income (loss). The Company has no ineffectiveness related to its foreign exchange cash flow hedges. Further, the Company expects to reclassify in the next twelve months approximately $0.7 million from other comprehensive income (loss) into earnings related to the Company’s outstanding cash flow hedges as of March 31, 2015 based on current foreign exchange rates.
	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 such, in accordance with the Company’s accounting policy, we record these foreign exchange forward contracts on a net basis, by counterparty within the condensed consolidated balance sheet. Net unrealized gains and losses are recorded within “Accounts receivable, net of allowance” and “Accounts payable,” respectively, in the condensed consolidated balance sheets.
	Information regarding the gross amounts of the Company’s derivative instruments and the amounts offset in the condensed consolidated balance sheets is as follows:


			March 31, 2015
	Description		Gross Amounts of				Gross Amounts of Offset in the				Net Amounts of Assets Presented
			Recognized				Condensed Consolidated				in the Condensed Consolidated
			Assets				Balance Sheet				Balance Sheet
	Foreign exchange forward contracts		$	1,779			$	(1,779	)		$	—
	Foreign exchange cash flow hedges			1,074				—				1,074

	Total		$	2,853			$	(1,779	)		$	1,074



			March 31, 2015
	Description		Gross Amounts of				Gross Amounts of Offset in the				Net Amounts of Liabilities Presented
			Recognized				Condensed Consolidated				in the Condensed Consolidated
			Liabilities				Balance Sheet				Balance Sheet
	Foreign exchange forward contracts		$	9,148			$	(1,779	)		$	7,369
	Foreign exchange cash flow hedges			—				—				—

	Total		$	9,148			$	(1,779	)		$	7,369



		December 31, 2014
Description		Gross Amounts of				Gross Amounts of Offset in the				Net Amounts of Assets Presented
		Recognized				Condensed Consolidated				in the Condensed Consolidated
		Assets				Balance Sheet				Balance Sheet
Foreign exchange forward contracts		$	2,037			$	(1,739	)		$	298

Total		$	2,037			$	(1,739	)		$	298



		December 31, 2014
Description		Gross Amounts of				Gross Amounts of Offset in the				Net Amounts of Liabilities Presented
		Recognized				Condensed Consolidated				in the Condensed Consolidated
		Liabilities				Balance Sheet				Balance Sheet
Foreign exchange forward contracts		$	6,589			$	(1,739	)		$	4,850

Total		$	6,589			$	(1,739	)		$	4,850

Refer to Note 8 of the condensed consolidated financial statements for further information regarding the fair value of the Company’s derivative instruments.

Fair_Value_Measurements

Fair Value Measurements	3 Months Ended
Fair Value Measurements	Mar. 31, 2015
Fair Value Disclosures [Abstract]
Fair Value Measurements	NOTE 8—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 condensed consolidated balance sheets as of March 31, 2015 and December 31, 2014.


		March 31, 2015
	Assets (Liabilities) at Fair Value	Quoted Prices in		Significant			Significant		Total
		Active Markets for		Other Observable			Unobservable
		Identical Items		Inputs (Level 2)			Inputs
		(Level 1)					(Level 3)
	Foreign exchange forward contracts—Assets	$	—	$	—		$	—	$	—
	Foreign exchange forward contracts—(Liabilities)		—		(7,369	)		—		(7,369	)
	Foreign exchange cash flow hedges —Assets		—		1,074			—		1,074

	Total fair value	$	—	$	(6,295	)	$	—	$	(6,295	)



		December 31, 2014
	Assets (Liabilities) at Fair Value	Quoted Prices in		Significant			Significant		Total
		Active Markets for		Other Observable			Unobservable
		Identical Items		Inputs (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 derivative instruments, 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 March 31, 2015 and December 31, 2014, respectively:


		As of		As of
		March 31, 2015		December 31, 2014
	Senior Notes (Level 2)	$	1,253,616	$	1,212,045

	Total fair value	$	1,253,616	$	1,212,045

	There were no other significant financial instruments outstanding as of March 31, 2015 and December 31, 2014.

Provision_for_Income_Taxes

Provision for Income Taxes	3 Months Ended
	Mar. 31, 2015
Income Tax Disclosure [Abstract]
Provision for Income Taxes	NOTE 9—PROVISION FOR INCOME TAXES


		Three Months Ended
		March 31,
		2015			2014
	Effective income tax rate		32.2	%		42.7	%
	Provision for income taxes for the three months ended March 31, 2015 was $17.9 million, resulting in an effective tax rate of 32.2%. Provision for income taxes for the three months ended March 31, 2014 was $12.8 million, resulting in an effective tax rate of 42.7%.
	The effective income tax rate is impacted by losses primarily within our holding companies incorporated in Luxembourg, which do not provide a tax benefit to the Company. For the three months ended March 31, 2015 and 2014 these losses totaled approximately $18.0 million and $23.9 million, respectively. In both periods, these losses were primarily from non-deductible interest and stock-based compensation expenses. Specifically, the decrease in losses is the result of a decrease in non-deductible interest expense within our holding companies incorporated in Luxembourg, primarily attributable to the redemption of $132.5 million in aggregate principal amount of the Senior Notes in July 2014.

Commitments_And_Contingencies

Commitments And Contingencies	3 Months Ended
Commitments And Contingencies	Mar. 31, 2015
Commitments and Contingencies Disclosure [Abstract]
Commitments And Contingencies	NOTE 10—COMMITMENTS AND CONTINGENCIES
	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 March 31, 2015 and December 31, 2014, 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 condensed consolidated financial statements.
	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. 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 annual commitment as disclosed in the consolidated financial statements included in the 2014 Annual Report.
	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	3 Months Ended
Pension Plans and Other Postretirement Benefits	Mar. 31, 2015
Compensation and Retirement Disclosure [Abstract]
Pension Plans and Other Postretirement Benefits	NOTE 11—PENSION PLANS AND OTHER POSTRETIREMENT BENEFITS
	The components of net periodic benefit costs for all significant plans were as follows:


		Three Months Ended
		March 31,
		2015			2014
	Defined Benefit Pension Plans
	Service cost	$	4,301		$	3,515
	Interest cost		1,360			1,933
	Expected return on plan assets		(421	)		(621	)
	Amortization of prior service credit		(423	)		(256	)
	Amortization of net loss		1,381			467

	Net periodic benefit cost	$	6,198		$	5,038



		Three Months Ended
		March 31,
		2015			2014
	Other Postretirement Plans
	Service cost	$	88		$	75
	Interest cost		140			78
	Amortization of prior service cost		26			26
	Amortization of net gain		—			(37	)

	Net periodic benefit cost	$	254		$	142


	As of March 31, 2015 and December 31, 2014, the Company’s benefit obligations included primarily in “Other noncurrent obligations” in the condensed consolidated balance sheets were $178.5 million and $196.6 million, respectively. The net periodic benefit costs are recognized in the condensed consolidated statement of operations as “Cost of sales” and “Selling, general and administrative expenses.”
	The Company made cash contributions of approximately $4.8 million during the three months ended March 31, 2015. The Company expects to make additional cash contributions, including benefit payments to unfunded plans, of approximately $12.0 million to its defined benefit plans for the remainder of 2015.

StockBased_Compensation

Stock-Based Compensation	3 Months Ended
	Mar. 31, 2015
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Stock-Based Compensation	NOTE 12—STOCK-BASED COMPENSATION
	Restricted Stock Awards issued by the Parent
	On June 17, 2010, Bain Capital Everest Manager Holding SCA (“the Parent”), an affiliate of Bain Capital, 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
	For the three months ended March 31, 2015, there were no grants of time-based restricted stock awards. Total compensation expense for time-based restricted stock awards was $1.1 million and $2.4 million for the three months ended March 31, 2015 and 2014, respectively. As of March 31, 2015, there was $3.9 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 2.3 years.
	Modified Time-based Restricted Stock Awards
	For the three months ended March 31, 2015, there were no grants of modified time-based restricted stock awards. Total compensation expense recognized for modified time-based restricted stock awards was $0.9 million for the three months ended March 31, 2015. As of March 31, 2015, there was $8.3 million of total unrecognized compensation cost related to the modified time-based restricted stock awards, which is expected to be recognized over a weighted-average period of 2.3 years.
	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 $0.1 million and $0.2 million for the three months ended March 31, 2015 and 2014, respectively. As of March 31, 2015, there was $0.3 million in unrecognized compensation cost related to these retention awards. This cost is expected to be recognized over a period of 0.8 years.
	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. During the three months ended March 31, 2015, the Board of Directors of the Company approved equity award grants for certain executives and employees, comprised of restricted share units (or RSUs) and options to purchase shares.
	The RSUs vest in full on the third anniversary of the date of grant, generally subject to the employee remaining continuously employed by the Company on the vesting date. Upon a termination of employment due to the employee’s death or retirement or a termination of employment by the Company without cause in connection with a restructuring or redundancy or due to the employee’s disability prior to the vesting date, the RSUs will vest in full or in part, depending on the type of termination. Dividends and dividend equivalents will not accumulate on unvested RSUs. Compensation cost for the RSUs is measured at the grant date based on the fair value of the award and is recognized ratably as expense over the three year vesting term.
	The option awards, which contain an exercise term of nine years from the date of grant, vest in three equal annual installments beginning on the on the first anniversary of the date of grant, generally subject to the employee remaining continuously employed on the applicable vesting date. Upon a termination of employment due to the employee’s death or retirement or a termination of employment by the Company without cause in connection with a restructuring or redundancy or due to the employee’s disability prior to a vesting date, the options will vest in full or will continue to vest on the original vesting schedule, depending on the type of termination. In the event employment is terminated for cause, all vested and unvested options will be forfeited. Compensation cost for the option awards is measured at the grant date based on the fair value of the award and is recognized as expense over the appropriate service period utilizing graded vesting.

	The fair value of RSUs is equal to the fair market value of the Company’s common shares based on the closing price on the date of grant. During the three months ended March 31, 2015, the Company granted 412,538 RSUs at a weighted-average grant date fair value of $18.14 per unit. Total compensation expense recognized for the RSUs was $0.2 million for the three months ended March 31, 2015. As of March 31, 2015, there was $7.3 million of total unrecognized compensation cost related to the RSUs, which is expected to be recognized over a weighted-average period of 2.9 years.
	The fair value for option awards is computed using the Black-Scholes pricing model, whose significant inputs and assumptions are determined at the date of grant. Determining the fair value of the option awards requires considerable judgment, including estimating the expected term of stock options and the expected volatility of the Company’s stock price. During the three months ended March 31, 2015, the Company granted 603,702 option awards to purchase common shares at a weighted-average grant date fair value of $7.79 per option award.
	Since the Company’s equity interests were privately held prior to the IPO in June 2014, there is limited publicly traded stock history, and as a result the expected volatility used in the Black-Scholes pricing model is based on the historical volatility of similar companies’ stock that are publicly traded as well as the Company’s debt-to-equity ratio. Until such time that the Company has enough publicly traded stock history to determine expected volatility based solely on its stock, estimated volatility of options granted will be based on a combination of our historical volatility and similar companies’ stock that are publicly traded. The expected term of options represents the period of time that options granted are expected to be outstanding. For the grants presented herein, the simplified method was used to calculate the expected term of options, given the Company’s limited historical exercise data. The risk free interest rate for the periods within the expected term of the option is based on the U.S. Treasury yield curve in effect at the time of grant. The dividend yield is assumed to be zero based on historical and expected dividend activity.
	The following are the weighted-average assumptions used within the Black-Scholes pricing model for grants during the three months ended March 31, 2015:


	Assumptions	Three Months Ended
		March 31,
		2015
	Expected term (in years)		5.5
	Expected volatility		45	%
	Risk-free interest rate		1.65	%
	Dividend yield		0	%
	Total compensation expense for the option awards was $0.2 million for the three months ended March 31, 2015. As of March 31, 2015, there was $4.5 million of total unrecognized compensation cost related to the option awards, which is expected to be recognized over a weighted-average period of 2.9 years.

Related_Party_Transactions

Related Party Transactions	3 Months Ended
Related Party Transactions	Mar. 31, 2015
Related Party Transactions [Abstract]
Related Party Transactions	NOTE 13—RELATED PARTY TRANSACTIONS
	In connection with the Acquisition, the Company entered into a ten year initial term advisory agreement with Bain Capital (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. 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 $0.1 million and $1.2 million for the three months ended March 31, 2015 and 2014, respectively.
	Bain Capital also provided 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” on the condensed consolidated balance sheet as of March 31, 2015 and December 31, 2014. This transaction services agreement also terminated upon consummation of the Company’s IPO in June 2014.

Segments

Segments	3 Months Ended
Segments	Mar. 31, 2015
Segment Reporting [Abstract]
Segments	NOTE 14—SEGMENTS
	Until January 1, 2015, the chief executive officer, who is the Company’s chief operating decision maker, managed the Company’s operations under two divisions, Emulsion Polymers and Plastics, which included the following four reporting segments: Latex, Synthetic Rubber, Styrenics, and Engineered Polymers.
	Effective January 1, 2015, the Company was reorganized under two new divisions called Performance Materials and Basic Plastics & Feedstocks. The Performance Materials division now includes the following reporting segments: Synthetic Rubber, Latex, and Performance Plastics. The Basic Plastics & Feedstocks division represents a separate segment for financial reporting purposes. This new organizational structure better reflects the nature of the Company by grouping together segments with similar strategies, business drivers and operating characteristics.

	The information below for the three months ended March 31, 2014 has been retroactively adjusted to reflect this change in reporting segments.
	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 Performance Plastics segment produces highly engineered compounds and blends for automotive end markets, as well as consumer electronics, medical, and lighting, collectively consumer essential markets, or CEM. The Basic Plastics & Feedstocks segment includes styrenic polymers, polycarbonate, or PC, and styrene monomer, and also includes the results of the Company’s two 50%-owned joint ventures, Americas Styrenics and Sumika Styron Polycarbonate.


			Performance Materials
	Three Months Ended		Latex			Synthetic			Performance		Basic Plastics		Corporate		Total
	Three Months Ended		Latex			Rubber			Plastics		& Feedstocks		Unallocated		Total
	March 31, 2015
	Sales to external customers		$	238,256		$	129,404		$	196,944	$	453,661	$	—	$	1,018,265
	Equity in earnings of unconsolidated affiliates			—			—			—		36,707		—		36,707
	EBITDA(1)			21,459			26,177			25,097		59,012
	Investment in unconsolidated affiliates			—			—			—		189,364		—		189,364
	Depreciation and amortization			6,370			7,790			1,413		6,230		751		22,554
	March 31, 2014
	Sales to external customers		$	326,305		$	176,714		$	202,005	$	654,108	$	—	$	1,359,132
	Equity in earnings of unconsolidated affiliates			—			—			—		14,950		—		14,950
	EBITDA(1)			25,513			43,101			17,349		22,558
	Investment in unconsolidated affiliates			—			—			—		164,859		—		164,859
	Depreciation and amortization			6,304			7,170			1,243		7,920		1,091		23,728

	-1	Reconciliation of EBITDA to net income is as follows:


			Three Months Ended
			March 31,
			2015			2014
	Total Segment EBITDA		$	131,745		$	108,521
	Corporate unallocated			(24,731	)		(22,139	)
	Less: Interest expense, net			28,856			32,818
	Less: Provision for income taxes			17,900			12,750
	Less: Depreciation and amortization			22,554			23,728

	Net income		$	37,704		$	17,086

	Corporate unallocated includes corporate overhead costs 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.

Divestitures

Divestitures	3 Months Ended
Divestitures	Mar. 31, 2015
Discontinued Operations and Disposal Groups [Abstract]
Divestitures	NOTE 15—DIVESTITURES
	EPS Divestiture
	In June 2013, the Company’s board of directors approved the sale of its expandable polystyrene (“EPS”) business within the Company’s Basic Plastics & Feedstocks segment, under a sale and purchase agreement which was signed in July 2013. The sale closed on September 30, 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 condensed consolidated statement of cash flows the three months ended March 31, 2014.
	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 would receive an incremental payment of €0.5 million. The EBITDA threshold was met for fiscal year 2014 and the Company received the €0.5 million payment (approximately $0.6 million based upon the applicable foreign exchange rate in the period the payment was received) during the three months ended March 31, 2015, which is reflected within cash flows used in investing activities in the condensed consolidated statement of cash flows for the period.

Restructuring

Restructuring	3 Months Ended
Restructuring	Mar. 31, 2015
Restructuring and Related Activities [Abstract]
Restructuring	NOTE 16—RESTRUCTURING
	Restructuring in Polycarbonate
	During the second quarter of 2014, the Company announced a restructuring within its Basic Plastics & Feedstocks segment 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 executed revised supply contracts for certain raw materials that were 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 Basic Plastics & Feedstocks segment. Production at the Freeport facility ceased as of September 30, 2014, and decommissioning and demolition began thereafter, with completion in the first quarter of 2015.
	The Company recorded certain restructuring charges during the year ended December 31, 2014 primarily relating to the reimbursement of decommissioning and demolition costs incurred by Dow, none of which were incurred during the three months ended March 31, 2014. Of the charges incurred, $4.2 million remained accrued within “Accounts payable” in the condensed consolidated balance sheet as of December 31, 2014. For the three months ended March 31, 2015, the Company recorded the remainder of the expected restructuring charges of $0.5 million related to the reimbursement of decommissioning and demolition costs incurred by Dow. These charges were included in “Selling, general and administrative expenses” in the consolidated statements of operations, and were allocated entirely to the Basic Plastics & Feedstocks segment. There were no remaining amounts accrued in the condensed consolidated balance sheet as of March 31, 2015.
	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.
	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 (of which $0.6 million was recorded during the three months ended March 31, 2014). These charges were included in “Selling, general and administrative expenses” in the condensed consolidated statements of operations, and were allocated entirely to the Latex segment. There were no additional restructuring charges recorded related to the Altona plant shutdown during the three months ended March 31, 2015. Of the remaining balances at March 31, 2015 and December 31, 2014, $1.0 million and $1.2 million, respectively, are recorded in “Accrued expenses and other current liabilities” and $0.8 million and $0.9 million, respectively, were recorded in “Other noncurrent liabilities” in the condensed consolidated balance sheet.
	The following tables provide a rollforward of the liability balances associated with the Altona plant shutdown for the three months ended March 31, 2015:


			Balance at		Expenses		Deductions(1)			Balance at
			December 31, 2014		Expenses		Deductions(1)			March 31, 2015
	Contract termination charges		$	2,128	$	—	$	(369	)	$	1,759

	Total		$	2,128	$	—	$	(369	)	$	1,759


	-1	Includes primarily payments made against the existing accrual, as well as immaterial impacts of foreign currency remeasurement.

Accumulated_Other_Comprehensiv

Accumulated Other Comprehensive Income (Loss)	3 Months Ended
Accumulated Other Comprehensive Income (Loss)	Mar. 31, 2015
Equity [Abstract]
Accumulated Other Comprehensive Income (Loss)	NOTE 17—ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS)
	The components of accumulated other comprehensive income (loss), net of income taxes, consisted of:


		Currency			Employee			Foreign Exchange		Total
		Translation			Benefits, Net			Cash Flow
		Adjustment, Net						Hedges, Net
	December 31, 2014	$	(17,755	)	$	(57,462	)	$	—	$	(75,217	)
	Other comprehensive income (loss)		(114,155	)		837			1,035		(112,283	)

	March 31, 2015	$	(131,910	)	$	(56,625	)	$	1,035	$	(187,500	)

	December 31, 2013	$	116,146		$	(27,768	)	$	—	$	88,378
	Other comprehensive income (loss)		(1,425	)		244			—		(1,181	)

	March 31, 2014	$	114,721		$	(27,524	)	$	—	$	87,197

	As noted above, the foreign exchange cash flow hedges were first entered during the three months ended March 31, 2015, with no settled contracts during that period. As such, for the three months ended March 31, 2015, there were no amounts related to the foreign exchange cash flow hedges reclassified into net income (loss) from accumulated other comprehensive income (loss). In future periods, when the underlying hedged transaction occurs, the effective portion of the gain or loss on the derivative will be reclassified from accumulated other comprehensive income (loss) into “Cost of sales” within the condensed consolidated statement of operations.

Earnings_Loss_Per_Share

Earnings (Loss) Per Share	3 Months Ended
Earnings (Loss) Per Share	Mar. 31, 2015
Earnings Per Share [Abstract]
Earnings (Loss) Per Share	NOTE 18—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 RSUs and stock option awards. 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 three months ended March 31, 2015 and 2014, 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 1.


			Three Months Ended
			March 31,
	(in thousands, except per share data)		2015		2014
	Earnings (losses):
	Net income available to common shareholders		$	37,704	$	17,086
	Shares:
	Weighted average common shares outstanding			48,770		37,270
	Dilutive effect of RSUs and option awards*			81		—

	Diluted weighted average shares outstanding			48,851		37,270

	Income per share:
	Income per share—basic		$	0.77	$	0.46

	Income per share—diluted		$	0.77	$	0.46


	*	Refer to Note 12 for discussion of RSUs and option awards granted in June of 2014 and in the first quarter of 2015 to certain Company directors and employees. No such awards were outstanding during the three months ended March 31, 2014.

Subsequent_Events

Subsequent Events	3 Months Ended
Subsequent Events	Mar. 31, 2015
Subsequent Events [Abstract]
Subsequent Events	NOTE 19—SUBSEQUENT EVENTS
	In May 2015, the Company issued $700.0 million equivalent in gross proceeds of senior notes, consisting of $300.0 million of senior notes due May 1, 2022 (the “Dollar Notes”) and €375.0 million of senior notes due May 1, 2022 (the “Euro Notes” and, together with the Dollar Notes, the “Notes”) by its subsidiaries Trinseo Materials Operating S.C.A. and Trinseo Materials Finance, Inc. (together, the “Issuers”). The Dollar Notes will bear interest at a rate of 6.750% and the Euro Notes will bear interest at a rate of 6.375%. The Issuers will pay interest semi-annually in arrears on the Notes on May 1 and November 1 of each year beginning on November 1, 2015.

	Additionally, in May 2015, the Company entered into a new senior secured credit facility to, among other things, issue a $500.0 million term loan facility (the “Term Loans”) bearing an interest rate of LIBOR plus 3.25%, subject to a 1.00% LIBOR floor. The Term Loans were issued with an original issue discount of 0.25%, and mature November 1, 2021. The new senior secured credit facility includes a revolving credit facility with a borrowing capacity of $325.0 million that matures in May 2020.
	The net proceeds from the Notes offering, together with approximately $500.0 million of borrowings under the Term Loans and available cash, will be used to repay all outstanding indebtedness under the Issuers’ 8.750% Senior Secured Notes due 2019 totaling $1,192.5 million, together with a call premium of approximately $69.0 million and accrued and unpaid interest thereon of approximately $30.0 million.

Supplemental_Guarantor_Condens

Supplemental Guarantor Condensed Consolidating Financial Statements	3 Months Ended
	Mar. 31, 2015
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Supplemental Guarantor Condensed Consolidating Financial Statements	NOTE 20—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 March 31, 2015 and December 31, 2014;

		•		the Condensed Consolidating Statements of Comprehensive Income (Loss) for the three months ended March 31, 2015 and 2014; and

		•		the Condensed Consolidating Statements of Cash Flows for the three months ended March 31, 2015 and 2014.
	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 the 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 Condensed Consolidated Financial Statements presented and other notes related thereto contained within this Quarterly Report.

	SUPPLEMENTAL CONDENSED CONSOLIDATING BALANCE SHEET
	(In thousands)


			March 31, 2015
			Parent			Issuers			Guarantor			Non-Guarantor			Eliminations				Consolidated
			Guarantor			Issuers			Subsidiaries			Subsidiaries			Eliminations				Consolidated
	Assets
	Current assets
	Cash and cash equivalents		$	332		$	672		$	146,314		$	71,379		$	—			$	218,697
	Accounts receivable, net of allowance			17			71			208,344			381,244			389				590,065
	Intercompany receivables			—			466,636			1,322,623			109,510			(1,898,769	)			—
	Inventories			—			—			312,440			82,845			(4,313	)			390,972
	Deferred income tax assets			—			—			4,811			3,612			—				8,423
	Other current assets			—			67			5,879			5,432			—				11,378

	Total current assets			349			467,446			2,000,411			654,022			(1,902,693	)			1,219,535

	Investments in unconsolidated affiliates			—			—			189,364			—			—				189,364
	Property, plant and equipment, net			—			—			381,705			123,400			—				505,105
	Other assets
	Goodwill			—			—			30,540			—			—				30,540
	Other intangible assets, net			—			—			143,555			1,771			—				145,326
	Investments in subsidiaries			258,121			1,268,922			531,264			—			(2,058,307	)			—
	Intercompany notes receivable— noncurrent			—			1,277,039			13,837			—			(1,290,876	)			—
	Deferred income tax assets—noncurrent			—			—			41,465			6,755			—				48,220
	Deferred charges and other assets			—			35,241			20,200			752			813				57,006

	Total other assets			258,121			2,581,202			780,861			9,278			(3,348,370	)			281,092

	Total assets		$	258,470		$	3,048,648		$	3,352,341		$	786,700		$	(5,251,063	)		$	2,195,096

	Liabilities and shareholders’ equity
	Current liabilities
	Short-term borrowings		$	—		$	—		$	—		$	4,139		$	—			$	4,139
	Accounts payable			—			2,439			335,572			57,020			—				395,031
	Intercompany payables			9,489			844,367			488,649			556,217			(1,898,722	)			—
	Income taxes payable			—			—			15,168			170			630				15,968
	Deferred income tax liabilities			—			—			1,454			476			—				1,930
	Accrued expenses and other current liabilities			73			26,862			46,801			11,010			—				84,746

	Total current liabilities			9,562			873,668			887,644			629,032			(1,898,092	)			501,814

	Noncurrent liabilities
	Long-term debt			—			1,192,500			2,121			—			—				1,194,621
	Intercompany notes payable—noncurrent			—			—			1,251,314			39,562			(1,290,876	)			—
	Deferred income tax liabilities—noncurrent			—			3,175			18,232			7,739			—				29,146
	Other noncurrent obligations			—			—			208,523			12,084			—				220,607

	Total noncurrent liabilities			—			1,195,675			1,480,190			59,385			(1,290,876	)			1,444,374

	Commitments and contingencies (Note 10)
Shareholders’ equity			248,908			979,305			984,507			98,283			(2,062,095	)			248,908

Total liabilities and shareholders’ equity		$	258,470		$	3,048,648		$	3,352,341		$	786,700		$	(5,251,063	)		$	2,195,096


SUPPLEMENTAL CONDENSED CONSOLIDATING BALANCE SHEET
(In thousands)


		December 31, 2014
		Parent			Issuers			Guarantor			Non-Guarantor			Eliminations				Consolidated
		Guarantor			Issuers			Subsidiaries			Subsidiaries			Eliminations				Consolidated
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 10)
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 STATEMENT OF COMPREHENSIVE INCOME (LOSS)
(In thousands)


		Three Months Ended March 31, 2015
		Parent			Issuers			Guarantor			Non-Guarantor			Eliminations				Consolidated
		Guarantor			Issuers			Subsidiaries			Subsidiaries			Eliminations				Consolidated
Net sales		$	—		$	—		$	936,736		$	271,853		$	(190,324	)		$	1,018,265
Cost of sales			—			156			840,114			268,578			(193,662	)			915,186

Gross profit			—			(156	)		96,622			3,275			3,338				103,079
Selling, general and administrative expenses			3,107			82			43,884			4,702			—				51,775
Equity in earnings of unconsolidated affiliates			—			—			36,707			—			—				36,707

Operating income (loss)			(3,107	)		(238	)		89,445			(1,427	)		3,338				88,011
Interest expense, net			—			28,692			133			31			—				28,856
Intercompany interest expense (income), net			3			(18,847	)		16,239			2,605			—				—
Other expense (income), net			2,476			(2,966	)		(4,054	)		8,092			3				3,551
Equity in loss (earnings) of subsidiaries			(43,290	)		(53,480	)		(36,218	)		—			132,988				—

Income (loss) before income taxes			37,704			46,363			113,345			(12,155	)		(129,653	)			55,604
Provision for (benefit from) income taxes			—			969			16,573			(818	)		1,176				17,900

Net income (loss)		$	37,704		$	45,394		$	96,772		$	(11,337	)	$	(130,829	)		$	37,704

Comprehensive income (loss)		$	(74,579	)	$	(66,889	)	$	(13,012	)	$	(13,836	)	$	93,737			$	(74,579	)



		Three Months Ended March 31, 2014
		Parent			Issuers			Guarantor			Non-Guarantor			Eliminations				Consolidated
		Guarantor			Issuers			Subsidiaries			Subsidiaries			Eliminations				Consolidated
Net sales		$	—		$	—		$	1,227,563		$	347,297		$	(215,728	)		$	1,359,132
Cost of sales			—			157			1,147,077			329,723			(216,454	)			1,260,503

Gross profit			—			(157	)		80,486			17,574			726				98,629
Selling, general and administrative expenses			2,706			685			42,076			4,563			—				50,030
Equity in earnings of unconsolidated affiliates			—			—			14,950			—			—				14,950

Operating income (loss)			(2,706	)		(842	)		53,360			13,011			726				63,549
Interest expense, net			—			31,590			312			916			—				32,818
Intercompany interest expense (income), net			2			(19,831	)		16,647			3,152			30				—
Other expense (income), net			—			(3,088	)		(824	)		4,807			—				895
Equity in loss (earnings) of subsidiaries			(19,794	)		(35,386	)		(27,168	)		—			82,348				—

Income (loss) before income taxes			17,086			25,873			64,393			4,136			(81,652	)			29,836
Provision for income taxes			—			—			9,182			3,316			252				12,750

Net income (loss)		$	17,086		$	25,873		$	55,211		$	820		$	(81,904	)		$	17,086

Comprehensive income (loss)		$	15,905		$	24,692		$	54,636		$	214		$	(79,542	)		$	15,905


SUPPLEMENTAL CONDENSED CONSOLIDATING STATEMENT OF CASH FLOWS
(In thousands)


		Three Months Ended March 31, 2015
		Parent			Issuers			Guarantor			Non-			Eliminations				Consolidated
		Guarantor						Subsidiaries			Guarantor
											Subsidiaries
Cash flows from operating activities
Cash provided by (used in) operating activities		$	(636	)	$	(36,376	)	$	42,502		$	37,424		$	—			$	42,914
Cash flows from investing activities
Capital expenditures			—			—			(22,689	)		(4,981	)		—				(27,670	)
Proceeds from the sale of businesses and other assets			—			—			560			—			—				560
Intercompany investing activities			—			—			15,691			—			(15,691	)			—

Cash used in investing activities			—			—			(6,438	)		(4,981	)		(15,691	)			(27,110	)

Cash flows from financing activities
Intercompany short-term borrowings, net			65			34,046			(48,986	)		(816	)		15,691				—
Short-term borrowings, net			—			—			(66	)		(9,421	)		—				(9,487	)

Cash provided by (used in) financing activities			65			34,046			(49,052	)		(10,237	)		15,691				(9,487	)
Effect of exchange rates on cash			(1	)		349			(6,804	)		(1,950	)		—				(8,406	)

Net change in cash and cash equivalents			(572	)		(1,981	)		(19,792	)		20,256			—				(2,089	)
Cash and cash equivalents—beginning of period			904			2,653			166,106			51,123			—				220,786

Cash and cash equivalents—end of period		$	332		$	672		$	146,314		$	71,379		$	—			$	218,697


SUPPLEMENTAL CONDENSED CONSOLIDATING STATEMENT OF CASH FLOWS
(In thousands)


		Three Months Ended March 31, 2014
		Parent			Issuers			Guarantor			Non-			Eliminations				Consolidated
		Guarantor						Subsidiaries			Guarantor
											Subsidiaries
Cash flows from operating activities
Cash provided by (used in) operating activities		$	(15	)	$	(33,173	)	$	14,291		$	17,714		$	—			$	(1,183	)
Cash flows from investing activities
Capital expenditures			—			—			(38,254	)		(2,887	)		—				(41,141	)
Payment for working capital adjustment from sale of business			—			—			(700	)		—			—				(700	)
Distributions from unconsolidated affiliates			—			—			978			—			—				978
Investments in subsidiaries			—			(10,000	)		—			—			10,000				—
Intercompany investing activities			—			—			(76,566	)		—			76,566				—

Cash provided by (used in) investing activities			—			(10,000	)		(114,542	)		(2,887	)		86,566				(40,863	)

Cash flows from financing activities
Intercompany short-term borrowings, net			30			44,908			13,050			5,578			(63,566	)			—
Short-term borrowings, net			—			(2,188	)		(70	)		(12,579	)		—				(14,837	)
Contributions from parent companies			—			—			10,000			—			(10,000	)			—
Proceeds from issuance of intercompany indebtedness			—			—			13,000			—			(13,000	)			—
Proceeds from Accounts Receivable Securitization Facility			—			—			—			60,971			—				60,971
Repayments of Accounts Receivable Securitization Facility			—			—			—			(61,538	)		—				(61,538	)

Cash provided by (used in) financing activities			30			42,720			35,980			(7,568	)		(86,566	)			(15,404	)
Effect of exchange rates on cash			—			2			322			(288	)		—				36

Net change in cash and cash equivalents			15			(451	)		(63,949	)		6,971			—				(57,414	)
Cash and cash equivalents—beginning of period			2			954			154,770			40,777			—				196,503

Cash and cash equivalents—end of period		$	17		$	503		$	90,821		$	47,748		$	—			$	139,089

Recent_Accounting_Guidance_Pol

Recent Accounting Guidance (Policies)	3 Months Ended
Recent Accounting Guidance (Policies)	Mar. 31, 2015
Accounting Changes and Error Corrections [Abstract]
Recent Accounting Guidance	In April 2014, the Financial Accounting Standards Board (“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 Company adopted this guidance effective January 1, 2015, and the adoption did not have a significant impact on the Company’s financial position, results of operations, or disclosures.
	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. In April 2015, the FASB proposed to defer the effective date of this new guidance by one year. If the proposal is approved, subject to the FASB’s due process requirement, early adoption would be permitted as of the original effective date, and the standard would be effective for the Company beginning January 1, 2018. The Company is currently assessing the impact of adopting this guidance on its financial statements and results of operations.

	In January 2015, the FASB issued guidance to simplify income statement classification by removing the concept of extraordinary items from GAAP. The Company adopted this guidance effective January 1, 2015, and the adoption did not have a significant impact on the Company’s financial position or results of operations.
	In April 2015, the FASB issued guidance that requires debt issuance costs related to a recognized debt liability be presented in the balance sheet as a direct deduction from the carrying value of that debt liability, consistent with debt discounts. The recognition and measurement guidance for debt issuance costs are not affected. This new guidance, which is to be applied on a retrospective basis, is effective for public companies for annual and interim periods beginning after December 31, 2015, with early adoption permitted. The Company will adopt this guidance effective January 1, 2016.

Investments_in_Unconsolidated_1

Investments in Unconsolidated Affiliates (Tables)	3 Months Ended
Investments in Unconsolidated Affiliates (Tables)	Mar. 31, 2015
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:


		Three Months Ended
		March 31,
		2015		2014
	Sales	$	439,570	$	564,132
	Gross profit	$	77,670	$	38,008
	Net income	$	66,019	$	21,520

Inventories_Tables

Inventories (Tables)	3 Months Ended
Inventories (Tables)	Mar. 31, 2015
Inventory Disclosure [Abstract]
Schedule of Inventories	Inventories consisted of the following:


		March 31,		December 31,
		2015		2014
	Finished goods	$	197,762	$	235,949
	Raw materials and semi-finished goods		162,647		205,061
	Supplies		30,563		32,851

	Total	$	390,972	$	473,861

Goodwill_and_Intangible_Assets1

Goodwill and Intangible Assets (Tables)	3 Months Ended
Goodwill and Intangible Assets (Tables)	Mar. 31, 2015
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, 2014 to March 31, 2015:


		Performance Materials
		Latex			Synthetic			Performance			Basic Plastics			Total
		Latex			Rubber			Plastics			& Feedstocks			Total
	Balance at December 31, 2014	$	13,815		$	9,461		$	3,243		$	8,055		$	34,574
	Foreign currency impact		(1,612	)		(1,104	)		(378	)		(940	)		(4,034	)

	Balance at March 31, 2015	$	12,203		$	8,357		$	2,865		$	7,115		$	30,540

Schedule of Other Intangible Assets	The following table provides information regarding the Company’s other intangible assets as of March 31, 2015 and December 31, 2014, respectively:


					March 31, 2015									December 31, 2014
		Estimated			Gross			Accumulated			Net			Gross			Accumulated			Net
		Useful Life			Carrying			Amortization						Carrying			Amortization
		(Years)			Amount									Amount
	Developed technology		15		$	166,823		$	(53,003	)	$	113,820		$	188,854		$	(56,782	)	$	132,072
	Manufacturing Capacity Rights		6			20,400			(3,308	)		17,092			23,095			(2,809	)		20,286
	Software		5			13,581			(7,078	)		6,503			13,177			(6,441	)		6,736
	Software in development		N/A			7,678			—			7,678			6,000			—			6,000
	Other		N/A			233			—			233			264			—			264
	Total				$	208,715		$	(63,389	)	$	145,326		$	231,390		$	(66,032	)	$	165,358

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
	Remainder of 2015	$	13,108
	2016		16,918
	2017		16,083
	2018		15,396
	2019		15,151
	2020		11,903

Debt_Tables

Debt (Tables)	3 Months Ended
Debt (Tables)	Mar. 31, 2015
Debt Disclosure [Abstract]
Schedule of Debt	Debt consisted of the following:


		March 31,			December 31,
		2015			2014
	Senior Secured Credit Facility
	Revolving Facility	$	—		$	—
	Senior Notes		1,192,500			1,192,500
	Accounts Receivable Securitization Facility		—			—
	Other indebtedness		6,260			9,707

	Total debt		1,198,760			1,202,207
	Less: short-term borrowings		(4,139	)		(7,559	)

	Total long-term debt	$	1,194,621		$	1,194,648

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	%

Derivative_Instruments_Tables

Derivative Instruments (Tables)	3 Months Ended
Derivative Instruments (Tables)	Mar. 31, 2015
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 March 31, 2015.


	Buy / (Sell)	March 31,
	Buy / (Sell)	2015
	Euro	$	167,979
	Chinese Yuan	$	(97,476	)
	Swiss Franc	$	40,700
	Indonesian Rupiah	$	(37,450	)
	British Pound	$	(12,157	)
Schedule of Changes in Fair Value of Company's Derivative Instruments	Information regarding changes in the fair value of the Company’s derivative instruments, including those not designated for hedge accounting treatment is as follows:


		Gain (Loss) Recognized in						Gain (Loss) Recognized in
		Other Comprehensive						Statement of Operations
		Income (Loss) on Balance Sheet
		Three Months Ended March 31,											Statement of Operations
		2015			2014			2015			2014		Classification
	Designated as Cash Flow Hedges
	Foreign exchange cash flow hedges	$	1,035		$	—		$	—		$	—	Cost of sales

	Total	$	1,035		$	—		$	—		$	—


	Not Designated as Hedges
	Foreign exchange forward contracts	$	—		$	—		$	(20,962	)	$	—	Other expense, net

	Total	$	—		$	—		$	(20,962	)	$	—

Information Regarding Gross Amounts of Company's Derivative Instruments and Amounts Offset in Condensed Consolidated Balance Sheets	Information regarding the gross amounts of the Company’s derivative instruments and the amounts offset in the condensed consolidated balance sheets is as follows:


		March 31, 2015
	Description	Gross Amounts of			Gross Amounts of Offset in the			Net Amounts of Assets Presented
		Recognized			Condensed Consolidated			in the Condensed Consolidated
		Assets			Balance Sheet			Balance Sheet
	Foreign exchange forward contracts	$	1,779		$	(1,779	)	$	—
	Foreign exchange cash flow hedges		1,074			—			1,074

	Total	$	2,853		$	(1,779	)	$	1,074



		March 31, 2015
	Description	Gross Amounts of			Gross Amounts of Offset in the			Net Amounts of Liabilities Presented
		Recognized			Condensed Consolidated			in the Condensed Consolidated
		Liabilities			Balance Sheet			Balance Sheet
	Foreign exchange forward contracts	$	9,148		$	(1,779	)	$	7,369
	Foreign exchange cash flow hedges		—			—			—

	Total	$	9,148		$	(1,779	)	$	7,369



		December 31, 2014
	Description	Gross Amounts of			Gross Amounts of Offset in the			Net Amounts of Assets Presented
		Recognized			Condensed Consolidated			in the Condensed Consolidated
		Assets			Balance Sheet			Balance Sheet
	Foreign exchange forward contracts	$	2,037		$	(1,739	)	$	298

	Total	$	2,037		$	(1,739	)	$	298



		December 31, 2014
	Description	Gross Amounts of			Gross Amounts of Offset in the			Net Amounts of Liabilities Presented
		Recognized			Condensed Consolidated			in the Condensed Consolidated
		Liabilities			Balance Sheet			Balance Sheet
	Foreign exchange forward contracts	$	6,589		$	(1,739	)	$	4,850

	Total	$	6,589		$	(1,739	)	$	4,850

Fair_Value_Measurements_Tables

Fair Value Measurements (Tables)	3 Months Ended
Fair Value Measurements (Tables)	Mar. 31, 2015
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 condensed consolidated balance sheets as of March 31, 2015 and December 31, 2014.


		March 31, 2015
	Assets (Liabilities) at Fair Value	Quoted Prices in		Significant			Significant		Total
		Active Markets for		Other Observable			Unobservable
		Identical Items		Inputs (Level 2)			Inputs
		(Level 1)					(Level 3)
	Foreign exchange forward contracts—Assets	$	—	$	—		$	—	$	—
	Foreign exchange forward contracts—(Liabilities)		—		(7,369	)		—		(7,369	)
	Foreign exchange cash flow hedges —Assets		—		1,074			—		1,074

	Total fair value	$	—	$	(6,295	)	$	—	$	(6,295	)



		December 31, 2014
	Assets (Liabilities) at Fair Value	Quoted Prices in		Significant			Significant		Total
		Active Markets for		Other Observable			Unobservable
		Identical Items		Inputs (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 March 31, 2015 and December 31, 2014, respectively:


		As of		As of
		March 31, 2015		December 31, 2014
	Senior Notes (Level 2)	$	1,253,616	$	1,212,045

	Total fair value	$	1,253,616	$	1,212,045

Provision_for_Income_Taxes_Tab

Provision for Income Taxes (Tables)	3 Months Ended
	Mar. 31, 2015
Income Tax Disclosure [Abstract]
Schedule of Effective Income Tax Rate
		Three Months Ended
		March 31,
		2015			2014
	Effective income tax rate		32.2	%		42.7	%

Pension_Plans_and_Other_Postre1

Pension Plans and Other Postretirement Benefits (Tables)	3 Months Ended
Pension Plans and Other Postretirement Benefits (Tables)	Mar. 31, 2015
Compensation and Retirement Disclosure [Abstract]
Components of Net Periodic Benefit Costs for All Significant Plans	The components of net periodic benefit costs for all significant plans were as follows:


		Three Months Ended
		March 31,
		2015			2014
	Defined Benefit Pension Plans
	Service cost	$	4,301		$	3,515
	Interest cost		1,360			1,933
	Expected return on plan assets		(421	)		(621	)
	Amortization of prior service credit		(423	)		(256	)
	Amortization of net loss		1,381			467

	Net periodic benefit cost	$	6,198		$	5,038



		Three Months Ended
		March 31,
		2015			2014
	Other Postretirement Plans
	Service cost	$	88		$	75
	Interest cost		140			78
	Amortization of prior service cost		26			26
	Amortization of net gain		—			(37	)

	Net periodic benefit cost	$	254		$	142

StockBased_Compensation_Tables

Stock-Based Compensation (Tables)	3 Months Ended
	Mar. 31, 2015
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Summary of Weighted-Average Assumptions Used Within Black-Scholes Pricing Model for Grants	The following are the weighted-average assumptions used within the Black-Scholes pricing model for grants during the three months ended March 31, 2015:


	Assumptions	Three Months Ended
		March 31,
		2015
	Expected term (in years)		5.5
	Expected volatility		45	%
	Risk-free interest rate		1.65	%
	Dividend yield		0	%

Segments_Tables

Segments (Tables)	3 Months Ended
Segments (Tables)	Mar. 31, 2015
Segment Reporting [Abstract]
Reconciliation of Segment Reporting to Consolidated
			Performance Materials
	Three Months Ended		Latex			Synthetic			Performance		Basic Plastics		Corporate		Total
	Three Months Ended		Latex			Rubber			Plastics		& Feedstocks		Unallocated		Total
	March 31, 2015
	Sales to external customers		$	238,256		$	129,404		$	196,944	$	453,661	$	—	$	1,018,265
	Equity in earnings of unconsolidated affiliates			—			—			—		36,707		—		36,707
	EBITDA(1)			21,459			26,177			25,097		59,012
	Investment in unconsolidated affiliates			—			—			—		189,364		—		189,364
	Depreciation and amortization			6,370			7,790			1,413		6,230		751		22,554
	March 31, 2014
	Sales to external customers		$	326,305		$	176,714		$	202,005	$	654,108	$	—	$	1,359,132
	Equity in earnings of unconsolidated affiliates			—			—			—		14,950		—		14,950
	EBITDA(1)			25,513			43,101			17,349		22,558
	Investment in unconsolidated affiliates			—			—			—		164,859		—		164,859
	Depreciation and amortization			6,304			7,170			1,243		7,920		1,091		23,728

	-1	Reconciliation of EBITDA to net income is as follows:


			Three Months Ended
			March 31,
			2015			2014
	Total Segment EBITDA		$	131,745		$	108,521
	Corporate unallocated			(24,731	)		(22,139	)
	Less: Interest expense, net			28,856			32,818
	Less: Provision for income taxes			17,900			12,750
	Less: Depreciation and amortization			22,554			23,728

	Net income		$	37,704		$	17,086

Restructuring_Tables

Restructuring (Tables)	3 Months Ended
Restructuring (Tables)	Mar. 31, 2015
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 three months ended March 31, 2015:


			Balance at		Expenses		Deductions(1)			Balance at
			December 31, 2014		Expenses		Deductions(1)			March 31, 2015
	Contract termination charges		$	2,128	$	—	$	(369	)	$	1,759

	Total		$	2,128	$	—	$	(369	)	$	1,759


	-1	Includes primarily payments made against the existing accrual, as well as immaterial impacts of foreign currency remeasurement.

Accumulated_Other_Comprehensiv1

Accumulated Other Comprehensive Income (Loss) (Tables)	3 Months Ended
Accumulated Other Comprehensive Income (Loss) (Tables)	Mar. 31, 2015
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			Foreign Exchange		Total
		Translation			Benefits, Net			Cash Flow
		Adjustment, Net						Hedges, Net
	December 31, 2014	$	(17,755	)	$	(57,462	)	$	—	$	(75,217	)
	Other comprehensive income (loss)		(114,155	)		837			1,035		(112,283	)

	March 31, 2015	$	(131,910	)	$	(56,625	)	$	1,035	$	(187,500	)

	December 31, 2013	$	116,146		$	(27,768	)	$	—	$	88,378
	Other comprehensive income (loss)		(1,425	)		244			—		(1,181	)

	March 31, 2014	$	114,721		$	(27,524	)	$	—	$	87,197

Earnings_Loss_Per_Share_Tables

Earnings (Loss) Per Share (Tables)	3 Months Ended
Earnings (Loss) Per Share (Tables)	Mar. 31, 2015
Earnings Per Share [Abstract]
Schedule of Earnings (Loss) per Share Basic and Diluted	The following table presents EPS and diluted EPS for the three months ended March 31, 2015 and 2014, 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 1.


			Three Months Ended
			March 31,
	(in thousands, except per share data)		2015		2014
	Earnings (losses):
	Net income available to common shareholders		$	37,704	$	17,086
	Shares:
	Weighted average common shares outstanding			48,770		37,270
	Dilutive effect of RSUs and option awards*			81		—

	Diluted weighted average shares outstanding			48,851		37,270

	Income per share:
	Income per share—basic		$	0.77	$	0.46

	Income per share—diluted		$	0.77	$	0.46


	*	Refer to Note 12 for discussion of RSUs and option awards granted in June of 2014 and in the first quarter of 2015 to certain Company directors and employees. No such awards were outstanding during the three months ended March 31, 2014.

Supplemental_Guarantor_Condens1

Supplemental Guarantor Condensed Consolidating Financial Statements (Tables)	3 Months Ended
	Mar. 31, 2015
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Supplemental Condensed Consolidating Balance Sheet	SUPPLEMENTAL CONDENSED CONSOLIDATING BALANCE SHEET
	(In thousands)


			March 31, 2015
			Parent				Issuers				Guarantor				Non-Guarantor				Eliminations				Consolidated
			Guarantor				Issuers				Subsidiaries				Subsidiaries				Eliminations				Consolidated
	Assets
	Current assets
	Cash and cash equivalents		$	332			$	672			$	146,314			$	71,379			$	—			$	218,697
	Accounts receivable, net of allowance			17				71				208,344				381,244				389				590,065
	Intercompany receivables			—				466,636				1,322,623				109,510				(1,898,769	)			—
	Inventories			—				—				312,440				82,845				(4,313	)			390,972
	Deferred income tax assets			—				—				4,811				3,612				—				8,423
	Other current assets			—				67				5,879				5,432				—				11,378

	Total current assets			349				467,446				2,000,411				654,022				(1,902,693	)			1,219,535

	Investments in unconsolidated affiliates			—				—				189,364				—				—				189,364
	Property, plant and equipment, net			—				—				381,705				123,400				—				505,105
	Other assets
	Goodwill			—				—				30,540				—				—				30,540
	Other intangible assets, net			—				—				143,555				1,771				—				145,326
	Investments in subsidiaries			258,121				1,268,922				531,264				—				(2,058,307	)			—
	Intercompany notes receivable— noncurrent			—				1,277,039				13,837				—				(1,290,876	)			—
	Deferred income tax assets—noncurrent			—				—				41,465				6,755				—				48,220
	Deferred charges and other assets			—				35,241				20,200				752				813				57,006

	Total other assets			258,121				2,581,202				780,861				9,278				(3,348,370	)			281,092

	Total assets		$	258,470			$	3,048,648			$	3,352,341			$	786,700			$	(5,251,063	)		$	2,195,096

	Liabilities and shareholders’ equity
	Current liabilities
	Short-term borrowings		$	—			$	—			$	—			$	4,139			$	—			$	4,139
	Accounts payable			—				2,439				335,572				57,020				—				395,031
	Intercompany payables			9,489				844,367				488,649				556,217				(1,898,722	)			—
	Income taxes payable			—				—				15,168				170				630				15,968
	Deferred income tax liabilities			—				—				1,454				476				—				1,930
	Accrued expenses and other current liabilities			73				26,862				46,801				11,010				—				84,746

	Total current liabilities			9,562				873,668				887,644				629,032				(1,898,092	)			501,814

	Noncurrent liabilities
	Long-term debt			—				1,192,500				2,121				—				—				1,194,621
	Intercompany notes payable—noncurrent			—				—				1,251,314				39,562				(1,290,876	)			—
	Deferred income tax liabilities—noncurrent			—				3,175				18,232				7,739				—				29,146
	Other noncurrent obligations			—				—				208,523				12,084				—				220,607

	Total noncurrent liabilities			—				1,195,675				1,480,190				59,385				(1,290,876	)			1,444,374

	Commitments and contingencies (Note 10)
	Shareholders’ equity			248,908				979,305				984,507				98,283				(2,062,095	)			248,908

	Total liabilities and shareholders’ equity		$	258,470			$	3,048,648			$	3,352,341			$	786,700			$	(5,251,063	)		$	2,195,096


	SUPPLEMENTAL CONDENSED CONSOLIDATING BALANCE SHEET
	(In thousands)


			December 31, 2014
			Parent				Issuers				Guarantor				Non-Guarantor				Eliminations				Consolidated
			Guarantor				Issuers				Subsidiaries				Subsidiaries				Eliminations				Consolidated
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 10)
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 Statement of Comprehensive Income (Loss)	SUPPLEMENTAL CONDENSED CONSOLIDATING STATEMENT OF COMPREHENSIVE INCOME (LOSS)
	(In thousands)


			Three Months Ended March 31, 2015
			Parent				Issuers				Guarantor				Non-Guarantor				Eliminations				Consolidated
			Guarantor				Issuers				Subsidiaries				Subsidiaries				Eliminations				Consolidated
	Net sales		$	—			$	—			$	936,736			$	271,853			$	(190,324	)		$	1,018,265
	Cost of sales			—				156				840,114				268,578				(193,662	)			915,186

	Gross profit			—				(156	)			96,622				3,275				3,338				103,079
	Selling, general and administrative expenses			3,107				82				43,884				4,702				—				51,775
	Equity in earnings of unconsolidated affiliates			—				—				36,707				—				—				36,707

	Operating income (loss)			(3,107	)			(238	)			89,445				(1,427	)			3,338				88,011
	Interest expense, net			—				28,692				133				31				—				28,856
	Intercompany interest expense (income), net			3				(18,847	)			16,239				2,605				—				—
	Other expense (income), net			2,476				(2,966	)			(4,054	)			8,092				3				3,551
	Equity in loss (earnings) of subsidiaries			(43,290	)			(53,480	)			(36,218	)			—				132,988				—

	Income (loss) before income taxes			37,704				46,363				113,345				(12,155	)			(129,653	)			55,604
	Provision for (benefit from) income taxes			—				969				16,573				(818	)			1,176				17,900

	Net income (loss)		$	37,704			$	45,394			$	96,772			$	(11,337	)		$	(130,829	)		$	37,704

	Comprehensive income (loss)		$	(74,579	)		$	(66,889	)		$	(13,012	)		$	(13,836	)		$	93,737			$	(74,579	)



			Three Months Ended March 31, 2014
			Parent				Issuers				Guarantor				Non-Guarantor				Eliminations				Consolidated
			Guarantor				Issuers				Subsidiaries				Subsidiaries				Eliminations				Consolidated
	Net sales		$	—			$	—			$	1,227,563			$	347,297			$	(215,728	)		$	1,359,132
	Cost of sales			—				157				1,147,077				329,723				(216,454	)			1,260,503

	Gross profit			—				(157	)			80,486				17,574				726				98,629
	Selling, general and administrative expenses			2,706				685				42,076				4,563				—				50,030
	Equity in earnings of unconsolidated affiliates			—				—				14,950				—				—				14,950

	Operating income (loss)			(2,706	)			(842	)			53,360				13,011				726				63,549
	Interest expense, net			—				31,590				312				916				—				32,818
	Intercompany interest expense (income), net			2				(19,831	)			16,647				3,152				30				—
	Other expense (income), net			—				(3,088	)			(824	)			4,807				—				895
	Equity in loss (earnings) of subsidiaries			(19,794	)			(35,386	)			(27,168	)			—				82,348				—

	Income (loss) before income taxes			17,086				25,873				64,393				4,136				(81,652	)			29,836
	Provision for income taxes			—				—				9,182				3,316				252				12,750

	Net income (loss)		$	17,086			$	25,873			$	55,211			$	820			$	(81,904	)		$	17,086

	Comprehensive income (loss)		$	15,905			$	24,692			$	54,636			$	214			$	(79,542	)		$	15,905

Supplemental Condensed Consolidating Statement of Cash Flows	SUPPLEMENTAL CONDENSED CONSOLIDATING STATEMENT OF CASH FLOWS
	(In thousands)


			Three Months Ended March 31, 2015
			Parent				Issuers				Guarantor				Non-				Eliminations				Consolidated
			Guarantor								Subsidiaries				Guarantor
															Subsidiaries
	Cash flows from operating activities
	Cash provided by (used in) operating activities		$	(636	)		$	(36,376	)		$	42,502			$	37,424			$	—			$	42,914
	Cash flows from investing activities
	Capital expenditures			—				—				(22,689	)			(4,981	)			—				(27,670	)
	Proceeds from the sale of businesses and other assets			—				—				560				—				—				560
	Intercompany investing activities			—				—				15,691				—				(15,691	)			—

	Cash used in investing activities			—				—				(6,438	)			(4,981	)			(15,691	)			(27,110	)

	Cash flows from financing activities
	Intercompany short-term borrowings, net			65				34,046				(48,986	)			(816	)			15,691				—
	Short-term borrowings, net			—				—				(66	)			(9,421	)			—				(9,487	)

	Cash provided by (used in) financing activities			65				34,046				(49,052	)			(10,237	)			15,691				(9,487	)
	Effect of exchange rates on cash			(1	)			349				(6,804	)			(1,950	)			—				(8,406	)

	Net change in cash and cash equivalents			(572	)			(1,981	)			(19,792	)			20,256				—				(2,089	)
	Cash and cash equivalents—beginning of period			904				2,653				166,106				51,123				—				220,786

	Cash and cash equivalents—end of period		$	332			$	672			$	146,314			$	71,379			$	—			$	218,697


	SUPPLEMENTAL CONDENSED CONSOLIDATING STATEMENT OF CASH FLOWS
	(In thousands)


			Three Months Ended March 31, 2014
			Parent				Issuers				Guarantor				Non-				Eliminations				Consolidated
			Guarantor								Subsidiaries				Guarantor
															Subsidiaries
	Cash flows from operating activities
	Cash provided by (used in) operating activities		$	(15	)		$	(33,173	)		$	14,291			$	17,714			$	—			$	(1,183	)
	Cash flows from investing activities
	Capital expenditures			—				—				(38,254	)			(2,887	)			—				(41,141	)
	Payment for working capital adjustment from sale of business			—				—				(700	)			—				—				(700	)
	Distributions from unconsolidated affiliates			—				—				978				—				—				978
	Investments in subsidiaries			—				(10,000	)			—				—				10,000				—
	Intercompany investing activities			—				—				(76,566	)			—				76,566				—

	Cash provided by (used in) investing activities			—				(10,000	)			(114,542	)			(2,887	)			86,566				(40,863	)

	Cash flows from financing activities
	Intercompany short-term borrowings, net			30				44,908				13,050				5,578				(63,566	)			—
	Short-term borrowings, net			—				(2,188	)			(70	)			(12,579	)			—				(14,837	)
	Contributions from parent companies			—				—				10,000				—				(10,000	)			—
	Proceeds from issuance of intercompany indebtedness			—				—				13,000				—				(13,000	)			—
	Proceeds from Accounts Receivable Securitization Facility			—				—				—				60,971				—				60,971
	Repayments of Accounts Receivable Securitization Facility			—				—				—				(61,538	)			—				(61,538	)

	Cash provided by (used in) financing activities			30				42,720				35,980				(7,568	)			(86,566	)			(15,404	)
	Effect of exchange rates on cash			—				2				322				(288	)			—				36

	Net change in cash and cash equivalents			15				(451	)			(63,949	)			6,971				—				(57,414	)
	Cash and cash equivalents—beginning of period			2				954				154,770				40,777				—				196,503

	Cash and cash equivalents—end of period		$	17			$	503			$	90,821			$	47,748			$	—			$	139,089

Basis_of_Presentation_Addition

Basis of Presentation - Additional Information (Detail) (USD $)	0 Months Ended	3 Months Ended	12 Months Ended	0 Months Ended
In Millions, except Share data, unless otherwise specified	30-May-14	Mar. 31, 2015	Dec. 31, 2014	Jun. 17, 2014	Jan. 01, 2015
			Divisions		Divisions
			Segment
Subsidiary, Sale of Stock [Line Items]
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
Number of business divisions			2
Number of reportable segments			4
Number of new business divisions					2
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				$203.20

Investments_in_Unconsolidated_2

Investments in Unconsolidated Affiliates - Additional Information (Detail) (USD $)	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014
Schedule of Equity Method Investments [Line Items]
Number of strategic joint ventures	2
Investments in unconsolidated affiliates	$189,364,000	$164,859,000	$167,658,000
Dividends received from investing activities		978,000
Basic Plastics & Feedstocks [Member] \| Americas Styrenics [Member]
Schedule of Equity Method Investments [Line Items]
Investments in unconsolidated affiliates	153,700,000		133,500,000
Investment in unconsolidated affiliates-difference between carrying amount and underlying equity	104,500,000		108,400,000
Percentage of ownership underlying net assets	50.00%
Amortized weighted average remaining useful life	P5Y6M
Dividends received from operating activities	15,000,000	5,000,000
Basic Plastics & Feedstocks [Member] \| Sumika Styron Polycarbonate [Member]
Schedule of Equity Method Investments [Line Items]
Investments in unconsolidated affiliates	35,600,000		34,100,000
Investment in unconsolidated affiliates-difference between carrying amount and underlying equity	21,000,000		21,300,000
Percentage of ownership underlying net assets	50.00%
Amortized weighted average remaining useful life	P10Y6M
Dividends received from investing activities	$0	$1,000,000

Investments_in_Unconsolidated_3

Investments in Unconsolidated Affiliates - Summarized Financial Information of Unconsolidated Affiliates (Detail) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Equity Method Investment, Summarized Financial Information, Gross Profit (Loss) [Abstract]
Sales	$439,570	$564,132
Gross profit	77,670	38,008
Net income	$66,019	$21,520

Inventories_Schedule_of_Invent

Inventories - Schedule of Inventories (Detail) (USD $)	Mar. 31, 2015	Dec. 31, 2014
In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Inventory Disclosure [Abstract]
Finished goods	$197,762	$235,949
Raw materials and semi-finished goods	162,647	205,061
Supplies	30,563	32,851
Total	$390,972	$473,861

Goodwill_and_Intangible_Assets2

Goodwill and Intangible Assets - Changes in Carrying Amount of Goodwill, by Segment (Detail) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015
Goodwill [Line Items]
Balance at December 31, 2014	$34,574
Foreign currency impact	-4,034
Balance at March 31, 2015	30,540
Performance Materials, Latex [Member]
Goodwill [Line Items]
Balance at December 31, 2014	13,815
Foreign currency impact	-1,612
Balance at March 31, 2015	12,203
Performance Materials, Synthetic Rubber [Member]
Goodwill [Line Items]
Balance at December 31, 2014	9,461
Foreign currency impact	-1,104
Balance at March 31, 2015	8,357
Performance Materials, Performance Plastics [Member]
Goodwill [Line Items]
Balance at December 31, 2014	3,243
Foreign currency impact	-378
Balance at March 31, 2015	2,865
Basic Plastics & Feedstocks [Member]
Goodwill [Line Items]
Balance at December 31, 2014	8,055
Foreign currency impact	-940
Balance at March 31, 2015	$7,115

Goodwill_and_Intangible_Assets3

Goodwill and Intangible Assets - Schedule of Other Intangible Assets (Detail) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$208,715	$231,390
Accumulated Amortization	-63,389	-66,032
Net	145,326	165,358
Developed Technology [Member]
Finite-Lived Intangible Assets [Line Items]
Estimated Useful Life (Years)	15 years
Gross Carrying Amount	166,823	188,854
Accumulated Amortization	-53,003	-56,782
Net	113,820	132,072
Manufacturing Capacity Rights [Member]
Finite-Lived Intangible Assets [Line Items]
Estimated Useful Life (Years)	6 years
Gross Carrying Amount	20,400	23,095
Accumulated Amortization	-3,308	-2,809
Net	17,092	20,286
Software [Member]
Finite-Lived Intangible Assets [Line Items]
Estimated Useful Life (Years)	5 years
Gross Carrying Amount	13,581	13,177
Accumulated Amortization	-7,078	-6,441
Net	6,503	6,736
Software in Development [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	7,678	6,000
Net	7,678	6,000
Other [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	233	264
Net	$233	$264

Goodwill_and_Intangible_Assets4

Goodwill and Intangible Assets - Additional Information (Detail) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Goodwill and Intangible Assets Disclosure [Abstract]
Amortization expense on other intangible assets	$4.50	$4

Goodwill_and_Intangible_Assets5

Goodwill and Intangible Assets - Estimated Amortization Expense for Next Five Years (Detail) (USD $)	Mar. 31, 2015
In Thousands, unless otherwise specified	Mar. 31, 2015
Goodwill and Intangible Assets Disclosure [Abstract]
Estimated Amortization Expense, Remainder of 2015	$13,108
Estimated Amortization Expense, 2016	16,918
Estimated Amortization Expense, 2017	16,083
Estimated Amortization Expense, 2018	15,396
Estimated Amortization Expense, 2019	15,151
Estimated Amortization Expense, 2020	$11,903

Debt_Schedule_of_Debt_Detail

Debt - Schedule of Debt (Detail) (USD $)	Mar. 31, 2015	Dec. 31, 2014	Jan. 31, 2013
Debt Instrument [Line Items]
Senior Notes	$1,192,500,000	$1,192,500,000	$1,325,000,000
Other indebtedness	6,260,000	9,707,000
Total debt	1,198,760,000	1,202,207,000
Short-term borrowings	-4,139,000	-7,559,000
Total long-term debt	1,194,621,000	1,194,648,000
Total debt	1,198,760,000	1,202,207,000
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 $)	1 Months Ended	12 Months Ended
Debt - Senior Secured Credit Facility (Detail) (USD $)	Jan. 31, 2013	Dec. 31, 2012	Dec. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2015	Mar. 31, 2015
Debt Instrument [Line Items]
Senior Secured Credit Facility first lien net leverage ratio			4.5	5	5	5	5.25
Scenario Forecast [Member]
Debt Instrument [Line Items]
Senior Secured Credit Facility first lien net leverage ratio								4.25
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%
Revolving Facility [Member]
Debt Instrument [Line Items]
Maximum borrowing capacity, Revolving Credit Facility	300,000,000	240,000,000
Repayment of term loans	1,239,000,000
Credit Facility, amount outstanding									0
Credit Facility, funds available for borrowings									291,200,000
Letters of credit, amount outstanding									8,800,000
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
Senior Secured Credit Facility [Member]
Debt Instrument [Line Items]
Percentage of Revolving Facility borrowing capacity covenant trigger	25.00%
Undrawn letters of credit	$10,000,000

Debt_Senior_Notes_Detail

Debt - Senior Notes (Detail) (USD $)	1 Months Ended	3 Months Ended
Debt - Senior Notes (Detail) (USD $)	Jul. 31, 2014	Mar. 31, 2015	Dec. 31, 2014	Jan. 31, 2013
Debt Instrument [Line Items]
Debt, face amount		1,192,500,000	$1,192,500,000	$1,325,000,000
Senior Notes [Member]
Debt Instrument [Line Items]
Debt instrument, stated interest rate				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
Call premium	4,000,000
Accrued and unpaid interest	$5,200,000
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])	3 Months Ended
	Mar. 31, 2015
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) (Accounts Receivable Securitization Facility [Member], USD $)	1 Months Ended	3 Months Ended	4 Months Ended
	31-May-13	Mar. 31, 2015	Apr. 30, 2013	Dec. 31, 2014
Accounts Receivable Securitization Facility [Member]
Debt Instrument [Line Items]
Maximum borrowing capacity	$200,000,000		$160,000,000
Debt instrument, maturity date		2016-05
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		$147,700,000		$136,100,000

Derivative_Instruments_Additio

Derivative Instruments - Additional Information (Detail) (USD $)	3 Months Ended
	Mar. 31, 2015
Derivative Instruments, Gain (Loss) [Line Items]
Recorded losses from settlements and changes in the fair value of outstanding forward contracts	$21,000,000
Foreign exchange transaction gains (losses)	18,000,000
Foreign Exchange Forward Contracts [Member] \| Not Designated as Hedges [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivative contracts, notional amount	33,800,000
Foreign Exchange Cash Flow Hedges [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivative contracts, notional amount	90,000,000
Maturity period range	18 months
Reclassified out of other comprehensive income (loss)	0
Other comprehensive income loss estimated reclassification adjustment on derivatives included in net income in next twelve months	$700,000

Derivative_Instruments_Notiona

Derivative Instruments - Notional Amounts of Most Significant Net Foreign Exchange Hedge Positions Outstanding (Detail) (USD $)	Mar. 31, 2015
Euro [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative, Notional Amount, Buy / (Sell)	$167,979,000
Chinese Yuan [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative, Notional Amount, Buy / (Sell)	-97,476,000
Swiss Franc [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative, Notional Amount, Buy / (Sell)	40,700,000
Indonesian Rupiah [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative, Notional Amount, Buy / (Sell)	-37,450,000
British Pound [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative, Notional Amount, Buy / (Sell)	($12,157,000)

Derivative_Instruments_Schedul

Derivative Instruments - Schedule of Changes in Fair Value of Company's Derivative Instruments (Detail) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015
Derivative Instruments, Gain (Loss) [Line Items]
Gain (Loss) Recognized in Other Comprehensive Income (Loss) on Balance Sheet	$1,035
Gain (Loss) Recognized in Statement of Operations	-20,962
Designated as Cash Flow Hedges [Member] \| Foreign Exchange Contract [Member] \| Cost of Sales [Member] \| Cash Flow Hedges [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gain (Loss) Recognized in Other Comprehensive Income (Loss) on Balance Sheet	1,035
Not Designated as Hedges [Member] \| Foreign Exchange Forward Contracts [Member] \| Other Expense, Net [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gain (Loss) Recognized in Statement of Operations	($20,962)

Derivative_Instruments_Informa

Derivative Instruments - Information Regarding Gross Amounts of Company's Derivative Instruments and Amounts Offset in Condensed Consolidated Balance Sheets (Detail) (USD $)	Mar. 31, 2015	Dec. 31, 2014
In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Derivatives, Fair Value [Line Items]
Gross Amounts of Recognized Assets	$2,853	$2,037
Gross Amounts of Offset in the Condensed Consolidated Balance Sheet	-1,779	-1,739
Net Amounts of Assets Presented in the Condensed Consolidated Balance Sheet	1,074	298
Gross Amounts of Recognized Liabilities	9,148	6,589
Gross Amounts of Offset in the Condensed Consolidated Balance Sheet	-1,779	-1,739
Net Amounts of liabilities Presented in the Condensed Consolidated Balance Sheet	7,369	4,850
Foreign Exchange Forward Contracts [Member]
Derivatives, Fair Value [Line Items]
Gross Amounts of Recognized Assets	1,779	2,037
Gross Amounts of Offset in the Condensed Consolidated Balance Sheet	-1,779	-1,739
Net Amounts of Assets Presented in the Condensed Consolidated Balance Sheet		298
Gross Amounts of Recognized Liabilities	9,148	6,589
Gross Amounts of Offset in the Condensed Consolidated Balance Sheet	-1,779	-1,739
Net Amounts of liabilities Presented in the Condensed Consolidated Balance Sheet	7,369	4,850
Foreign Exchange Contract [Member] \| Cash Flow Hedges [Member]
Derivatives, Fair Value [Line Items]
Gross Amounts of Recognized Assets	1,074
Net Amounts of Assets Presented in the Condensed Consolidated Balance Sheet	$1,074

Fair_Value_Measurements_Schedu

Fair Value Measurements - Schedule of Assets and Liabilities at Fair Value on Recurring Basis (Detail) (USD $)	Mar. 31, 2015	Dec. 31, 2014
In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets at Fair Value	$1,074	$298
Liabilities at Fair Value	-7,369	-4,850
Foreign Exchange Contract [Member] \| Cash Flow Hedges [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets at Fair Value	1,074
Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total fair value	-6,295	-4,552
Recurring [Member] \| Foreign Exchange Contract [Member] \| Cash Flow Hedges [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets at Fair Value	1,074
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
Liabilities at Fair Value	-7,369	-4,850
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	-6,295	-4,552
Recurring [Member] \| Significant Other Observable Inputs (Level 2) [Member] \| Foreign Exchange Contract [Member] \| Cash Flow Hedges [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets at Fair Value	1,074
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
Liabilities at Fair Value	($7,369)	($4,850)

Fair_Value_Measurements_Estima

Fair Value Measurements - Estimated Fair Value of Outstanding Debt Not Carried at Fair Value (Detail) (USD $)	Mar. 31, 2015	Dec. 31, 2014
In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total fair value of long term debt	$1,253,616	$1,212,045
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	$1,253,616	$1,212,045

Provision_for_Income_Taxes_Sch

Provision for Income Taxes - Schedule of Effective Income Tax Rate (Detail)	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Income Tax Disclosure [Abstract]
Effective income tax rate	32.20%	42.70%

Provision_for_Income_Taxes_Add

Provision for Income Taxes - Additional Information (Detail) (USD $)	3 Months Ended		1 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Jul. 31, 2014
Schedule Of Effective Tax Rate Reconciliation [Line Items]
Effective income tax rate	32.20%	42.70%
Provision for income taxes	$17,900,000	$12,750,000
Senior Notes [Member]
Schedule Of Effective Tax Rate Reconciliation [Line Items]
Redemption of Senior Notes			132,500,000
Senior Notes [Member] \| LUXEMBOURG \| Holding Company [Member]
Schedule Of Effective Tax Rate Reconciliation [Line Items]
Loss attributable to holding company	$18,000,000	$23,900,000

Commitments_and_Contingencies_

Commitments and Contingencies - Additional Information (Detail) (USD $)	3 Months Ended
	Mar. 31, 2015	Dec. 31, 2014
Loss Contingencies [Line Items]
Accrued obligations for environmental remediation and restoration costs	0	$0
Minimum [Member]
Loss Contingencies [Line Items]
Purchase commitment period	1 year
Maximum [Member]
Loss Contingencies [Line Items]
Purchase commitment period	6 years

Pension_Plans_and_Other_Postre2

Pension Plans and Other Postretirement Benefits - Components of Net Periodic Benefit Costs for All Significant Plans (Detail) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Defined Benefit Pension Plans [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Service cost	$4,301	$3,515
Interest cost	1,360	1,933
Expected return on plan assets	-421	-621
Amortization of prior service cost (credit)	-423	-256
Amortization of net (gain) loss	1,381	467
Net periodic benefit cost	6,198	5,038
Other Postretirement Plans [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Service cost	88	75
Interest cost	140	78
Amortization of prior service cost (credit)	26	26
Amortization of net (gain) loss		-37
Net periodic benefit cost	$254	$142

Pension_Plans_and_Other_Postre3

Pension Plans and Other Postretirement Benefits - Additional Information (Detail) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Compensation and Retirement Disclosure [Abstract]
Pension and Other Postretirement Benefit Obligations- noncurrent	$178.50	$196.60
Company contributions to the defined benefit plans	4.8
Additional cash contributions, including benefit payments to unfunded plans	$12

StockBased_Compensation_Additi

Stock-Based Compensation - Additional Information (Detail) (USD $)	3 Months Ended
In Millions, except Share data, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014	Jun. 17, 2010
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation expense	$0.20
Weighted-average period of recognition	2 years 10 months 24 days
Option awards granted to purchase common shares	603,702
Weighted-average grant date fair value of option awards	$7.79
Unrecognized compensation cost related to option awards	4.5
2014 Omnibus Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock option awards, exercise term from the date of grant	9 years
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
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
Time-based Restricted Stock Awards [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted Stock Units granted during period	0
Compensation expense	1.1	2.4
Unrecognized compensation cost	3.9
Weighted-average period of recognition	2 years 3 months 18 days
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
Compensation expense	0.9
Unrecognized compensation cost	8.3
Weighted-average period of recognition	2 years 3 months 18 days
Management Retention Awards [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation expense	0.1	0.2
Unrecognized compensation cost	0.3
Weighted-average period of recognition	9 months 18 days
Management Retention Awards [Member] \| Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock awards, vesting period	4 years
Management Retention Awards [Member] \| Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock awards, vesting period	1 year
RSUs [Member] \| 2014 Omnibus Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted Stock Units granted during period	412,538
Compensation expense	0.2
Unrecognized compensation cost	$7.30
Weighted-average period of recognition	2 years 10 months 24 days
Stock awards, vesting period	3 years
Weighted-average grant date fair value per share of grants during period	$18.14

StockBased_Compensation_Summar

Stock-Based Compensation - Summary of Weighted-Average Assumptions Used Within Black-Scholes Pricing Model for Grants (Detail)	3 Months Ended
	Mar. 31, 2015
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Expected term (in years)	5 years 6 months
Expected volatility	45.00%
Risk-free interest rate	1.65%
Dividend yield	0.00%

Related_Party_Transactions_Add

Related Party Transactions - Additional Information (Detail) (Bain Capital [Member], USD $)	0 Months Ended	3 Months Ended
In Millions, unless otherwise specified	Jun. 17, 2014	Mar. 31, 2015	Mar. 31, 2014
Bain Capital [Member]
Related Party Transaction [Line Items]
Related party agreement term		10 years
Management fee expenses		$0.10	$1.20
Transaction services agreement, period		10 years
Percentage of advisory fees		1.00%
IPO expenses directly related to the offering	$2.20

Segments_Additional_Informatio

Segments - Additional Information (Detail)	12 Months Ended
	Dec. 31, 2014	Mar. 31, 2015	Jan. 01, 2015
	Segment	JointVenture	Divisions
	Divisions
Segment Reporting Information [Line Items]
Number of divisions	2
Number of reportable segments	4
Number of divisions			2
Number of strategic joint ventures		2
Basic Plastics & Feedstocks [Member] \| Americas Styrenics [Member]
Segment Reporting Information [Line Items]
Percentage of ownership underlying net assets		50.00%
Basic Plastics & Feedstocks [Member] \| Sumika Styron Polycarbonate [Member]
Segment Reporting Information [Line Items]
Percentage of ownership underlying net assets		50.00%

Segments_Reconciliation_of_Seg

Segments - Reconciliation of Segment Reporting to Consolidated (Detail) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014
Segment Reporting Information [Line Items]
Sales to external customers	$1,018,265	$1,359,132
Equity in earnings (losses) of unconsolidated affiliates	36,707	14,950
EBITDA	131,745	108,521
Investment in unconsolidated affiliates	189,364	164,859	167,658
Depreciation and amortization	22,554	23,728
Operating Segments [Member] \| Performance Materials, Latex [Member]
Segment Reporting Information [Line Items]
Sales to external customers	238,256	326,305
EBITDA	21,459	25,513
Depreciation and amortization	6,370	6,304
Operating Segments [Member] \| Performance Materials, Synthetic Rubber [Member]
Segment Reporting Information [Line Items]
Sales to external customers	129,404	176,714
EBITDA	26,177	43,101
Depreciation and amortization	7,790	7,170
Operating Segments [Member] \| Performance Materials, Performance Plastics [Member]
Segment Reporting Information [Line Items]
Sales to external customers	196,944	202,005
EBITDA	25,097	17,349
Depreciation and amortization	1,413	1,243
Operating Segments [Member] \| Basic Plastics & Feedstocks [Member]
Segment Reporting Information [Line Items]
Sales to external customers	453,661	654,108
Equity in earnings (losses) of unconsolidated affiliates	36,707	14,950
EBITDA	59,012	22,558
Investment in unconsolidated affiliates	189,364	164,859
Depreciation and amortization	6,230	7,920
Corporate Unallocated [Member]
Segment Reporting Information [Line Items]
Depreciation and amortization	$751	$1,091

Segments_Reconciliation_of_Seg1

Segments - Reconciliation of Segment Reporting to Consolidated (Parenthetical) (Detail) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Segment Reconciliation [Abstract]
Total Segment EBITDA	$131,745	$108,521
Corporate unallocated	-24,731	-22,139
Less: Interest expense, net	28,856	32,818
Less: Provision for income taxes	17,900	12,750
Less: Depreciation and amortization	22,554	23,728
Net income	$37,704	$17,086

Divestitures_Additional_Inform

Divestitures - Additional Information (Detail)	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2015	Mar. 31, 2015
	USD ($)	USD ($)	EUR (€)
Property, Plant and Equipment [Abstract]
Business disposition, working capital adjustment paid	$700,000
Incremental payment		$600,000	€ 500,000

Restructuring_Additional_Infor

Restructuring - Additional Information (Detail) (USD $)	3 Months Ended		12 Months Ended
Restructuring - Additional Information (Detail) (USD $)	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014
Restructuring Cost and Reserve [Line Items]
Accrued expenses and other current liabilities	$84,746,000		$120,928,000
Other noncurrent liabilities	220,607,000		239,287,000
Altona Plant [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges	0	600,000	2,800,000
Accrued charges	1,759,000		2,128,000
Accrued expenses and other current liabilities	1,000,000		1,200,000
Other noncurrent liabilities	800,000		900,000
Basic Plastics & Feedstocks [Member] \| Dow [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges	500,000	0
Accrued charges	$0		$4,200,000

Restructuring_Rollforward_of_L

Restructuring - Rollforward of Liability Balances (Detail) (Altona Plant [Member], USD $)	3 Months Ended		12 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014
Restructuring Cost and Reserve [Line Items]
Balance at beginning of period	$2,128,000
Expenses	0	600,000	2,800,000
Deductions	-369,000
Balance at end of period	1,759,000		2,128,000
Contract Termination Charges [Member]
Restructuring Cost and Reserve [Line Items]
Balance at beginning of period	2,128,000
Expenses	0
Deductions	-369,000
Balance at end of period	$1,759,000

Accumulated_Other_Comprehensiv2

Accumulated Other Comprehensive Income (Loss) - Components of Accumulated Other Comprehensive Income (Loss), Net of Income Taxes (Detail) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other comprehensive income (loss), beginning balance	($75,217)	$88,378
Other comprehensive income (loss)	-112,283	-1,181
Other comprehensive income (loss), ending balance	-187,500	87,197
Currency Translation Adjustment, Net [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other comprehensive income (loss), beginning balance	-17,755	116,146
Other comprehensive income (loss)	-114,155	-1,425
Other comprehensive income (loss), ending balance	-131,910	114,721
Employee Benefits, Net [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other comprehensive income (loss), beginning balance	-57,462	-27,768
Other comprehensive income (loss)	837	244
Other comprehensive income (loss), ending balance	-56,625	-27,524
Foreign Exchange Cash Flow Hedges, Net [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other comprehensive income (loss)	1,035
Other comprehensive income (loss), ending balance	$1,035

Accumulated_Other_Comprehensiv3

Accumulated Other Comprehensive Income (Loss) - Additional Information (Detail) (Foreign Exchange Cash Flow Hedges, Net [Member], USD $)	3 Months Ended
	Mar. 31, 2015
Foreign Exchange Cash Flow Hedges, Net [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Amounts reclassified into net income (loss) from accumulated other comprehensive income (loss)	$0

Earnings_Loss_Per_Share_Additi

Earnings (Loss) Per Share - Additional Information (Detail)	0 Months Ended	3 Months Ended
Earnings (Loss) Per Share - Additional Information (Detail)	30-May-14	Mar. 31, 2015
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
In Thousands, except Per Share data, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Earnings (losses):
Net income available to common shareholders	$37,704	$17,086
Shares:
Weighted average common shares outstanding	48,770	37,270
Dilutive effect of RSUs and option awards	81
Diluted weighted average shares outstanding	48,851	37,270
Income per share:
Income per share-basic	$0.77	$0.46
Income per share-diluted	$0.77	$0.46

Subsequent_Events_Additional_I

Subsequent Events - Additional Information (Detail)

Mar. 31, 2015

Dec. 31, 2014

Jan. 31, 2013

Dec. 31, 2012

Jan. 31, 2013

Dec. 31, 2012

Mar. 31, 2015

31-May-15

USD ($)

Revolving Facility [Member]

8.750% Senior Secured Notes due 2019 [Member]

Subsequent Event [Member]

USD ($)

LIBOR [Member]

USD ($)

Revolving Facility [Member]

Dollar Notes [Member]

Euro Notes [Member]

Term Loans [Member]

USD ($)

EUR (€)

USD ($)

LIBOR [Member]

Minimum [Member]

Subsequent Event [Line Items]

Debt instrument face amount

$700,000,000

$300,000,000

€ 375,000,000

$500,000,000

Debt instrument maturity date

1-May-22

1-Nov-21

Debt instrument interest rate

8.75%

6.75%

6.38%

1.00%

Debt instrument, interest payment frequency

The Issuers will pay interest semi-annually in arrears on the Notes on May 1 and November 1 of each year beginning on November 1, 2015.

Debt instrument, description of reference rate

LIBOR

Debt instrument, basis spread on variable rate

4.00%

5.75%

3.25%

Debt instrument original issue discount

0.25%

Revolving credit facility, borrowing capacity

300,000,000

240,000,000

325,000,000

Debt instrument maturity period

2018-01

2020-05

Proceeds from borrowings under Term Loans

500,000,000

Debt instrument maturity year

2019

Senior Secured Notes

1,192,500,000

1,325,000,000

1,192,500,000

Call premium

69,000,000

Accrued and unpaid interest

$30,000,000

Supplemental_Guarantor_Condens2

Supplemental Guarantor Condensed Consolidating Financial Statements - Additional Information (Detail)	Mar. 31, 2015
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 $)	Mar. 31, 2015	Dec. 31, 2014	Mar. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014	Mar. 31, 2014	Dec. 31, 2013
Current assets
Cash and cash equivalents	$218,697	$220,786	$139,089	$196,503
Accounts receivable, net of allowance	590,065	601,066
Inventories	390,972	473,861
Deferred income tax assets	8,423	11,786
Other current assets	11,378	15,164
Total current assets	1,219,535	1,322,663
Investments in unconsolidated affiliates	189,364	167,658	164,859
Property, plant and equipment, net	505,105	556,697
Other assets
Goodwill	30,540	34,574
Other intangible assets, net	145,326	165,358
Deferred income tax assets-noncurrent	48,220	46,812
Deferred charges and other assets	57,006	62,354
Total other assets	281,092	309,098
Total assets	2,195,096	2,356,116
Current liabilities
Short-term borrowings	4,139	7,559
Accounts payable	395,031	434,692
Income taxes payable	15,968	9,413
Deferred income tax liabilities	1,930	1,413
Accrued expenses and other current liabilities	84,746	120,928
Total current liabilities	501,814	574,005
Noncurrent liabilities
Long-term debt	1,194,621	1,194,648
Deferred income tax liabilities-noncurrent	29,146	27,311
Other noncurrent obligations	220,607	239,287
Total noncurrent liabilities	1,444,374	1,461,246
Commitments and contingencies (Note 10)
Shareholders' equity	248,908	320,865	361,796	343,202
Total liabilities and shareholders' equity	2,195,096	2,356,116
Parent Guarantor [Member]
Current assets
Cash and cash equivalents	332	904	17	2
Accounts receivable, net of allowance	17
Intercompany receivables		55
Total current assets	349	959
Other assets
Investments in subsidiaries	258,121	327,100
Total other assets	258,121	327,100
Total assets	258,470	328,059
Current liabilities
Accounts payable		46
Intercompany payables	9,489	6,944
Accrued expenses and other current liabilities	73	204
Total current liabilities	9,562	7,194
Noncurrent liabilities
Commitments and contingencies (Note 10)
Shareholders' equity	248,908	320,865
Total liabilities and shareholders' equity	258,470	328,059
Issuers [Member]
Current assets
Cash and cash equivalents	672	2,653	503	954
Accounts receivable, net of allowance	71	62
Intercompany receivables	466,636	493,090
Other current assets	67	148
Total current assets	467,446	495,953
Other assets
Investments in subsidiaries	1,268,922	1,327,675
Intercompany notes receivable-noncurrent	1,277,039	1,323,401
Deferred charges and other assets	35,241	36,899
Total other assets	2,581,202	2,687,975
Total assets	3,048,648	3,183,928
Current liabilities
Accounts payable	2,439	2,323
Intercompany payables	844,367	888,660
Accrued expenses and other current liabilities	26,862	52,001
Total current liabilities	873,668	942,984
Noncurrent liabilities
Long-term debt	1,192,500	1,192,500
Deferred income tax liabilities-noncurrent	3,175	2,300
Total noncurrent liabilities	1,195,675	1,194,800
Commitments and contingencies (Note 10)
Shareholders' equity	979,305	1,046,144
Total liabilities and shareholders' equity	3,048,648	3,183,928
Guarantor Subsidiaries [Member]
Current assets
Cash and cash equivalents	146,314	166,106	90,821	154,770
Accounts receivable, net of allowance	208,344	207,465
Intercompany receivables	1,322,623	1,369,837
Inventories	312,440	381,797
Deferred income tax assets	4,811	5,382
Other current assets	5,879	6,476
Total current assets	2,000,411	2,137,063
Investments in unconsolidated affiliates	189,364	167,658
Property, plant and equipment, net	381,705	426,905
Other assets
Goodwill	30,540	34,574
Other intangible assets, net	143,555	164,020
Investments in subsidiaries	531,264	595,755
Intercompany notes receivable-noncurrent	13,837	15,664
Deferred income tax assets-noncurrent	41,465	43,676
Deferred charges and other assets	20,200	23,398
Total other assets	780,861	877,087
Total assets	3,352,341	3,608,713
Current liabilities
Accounts payable	335,572	366,882
Intercompany payables	488,649	522,930
Income taxes payable	15,168	8,864
Deferred income tax liabilities	1,454	1,171
Accrued expenses and other current liabilities	46,801	55,412
Total current liabilities	887,644	955,259
Noncurrent liabilities
Long-term debt	2,121	2,148
Intercompany notes payable-noncurrent	1,251,314	1,296,121
Deferred income tax liabilities-noncurrent	18,232	16,145
Other noncurrent obligations	208,523	226,708
Total noncurrent liabilities	1,480,190	1,541,122
Commitments and contingencies (Note 10)
Shareholders' equity	984,507	1,112,332
Total liabilities and shareholders' equity	3,352,341	3,608,713
Non-Guarantor Subsidiaries [Member]
Current assets
Cash and cash equivalents	71,379	51,123	47,748	40,777
Accounts receivable, net of allowance	381,244	393,539
Intercompany receivables	109,510	101,716
Inventories	82,845	99,709
Deferred income tax assets	3,612	6,404
Other current assets	5,432	8,540
Total current assets	654,022	661,031
Property, plant and equipment, net	123,400	129,792
Other assets
Other intangible assets, net	1,771	1,338
Deferred income tax assets-noncurrent	6,755	3,136
Deferred charges and other assets	752	718
Total other assets	9,278	5,192
Total assets	786,700	796,015
Current liabilities
Short-term borrowings	4,139	7,559
Accounts payable	57,020	65,441
Intercompany payables	556,217	546,150
Income taxes payable	170	549
Deferred income tax liabilities	476	242
Accrued expenses and other current liabilities	11,010	13,311
Total current liabilities	629,032	633,252
Noncurrent liabilities
Intercompany notes payable-noncurrent	39,562	42,944
Deferred income tax liabilities-noncurrent	7,739	8,866
Other noncurrent obligations	12,084	12,579
Total noncurrent liabilities	59,385	64,389
Commitments and contingencies (Note 10)
Shareholders' equity	98,283	98,374
Total liabilities and shareholders' equity	786,700	796,015
Eliminations [Member]
Current assets
Accounts receivable, net of allowance	389
Intercompany receivables	-1,898,769	-1,964,698
Inventories	-4,313	-7,645
Total current assets	-1,902,693	-1,972,343
Other assets
Investments in subsidiaries	-2,058,307	-2,250,530
Intercompany notes receivable-noncurrent	-1,290,876	-1,339,065
Deferred charges and other assets	813	1,339
Total other assets	-3,348,370	-3,588,256
Total assets	-5,251,063	-5,560,599
Current liabilities
Intercompany payables	-1,898,722	-1,964,684
Income taxes payable	630
Total current liabilities	-1,898,092	-1,964,684
Noncurrent liabilities
Intercompany notes payable-noncurrent	-1,290,876	-1,339,065
Total noncurrent liabilities	-1,290,876	-1,339,065
Commitments and contingencies (Note 10)
Shareholders' equity	-2,062,095	-2,256,850
Total liabilities and shareholders' equity	($5,251,063)	($5,560,599)

Supplemental_Guarantor_Condens4

Supplemental Guarantor Condensed Consolidating Financial Statements - Supplemental Condensed Consolidating Statement of Comprehensive Income (Loss) (Detail) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Condensed Financial Statements, Captions [Line Items]
Net sales	$1,018,265	$1,359,132
Cost of sales	915,186	1,260,503
Gross profit	103,079	98,629
Selling, general and administrative expenses	51,775	50,030
Equity in earnings of unconsolidated affiliates	36,707	14,950
Operating income (loss)	88,011	63,549
Interest expense, net	28,856	32,818
Other expense (income), net	3,551	895
Income before income taxes	55,604	29,836
Provision for (benefit from) income taxes	17,900	12,750
Net income	37,704	17,086
Comprehensive income (loss)	-74,579	15,905
Eliminations [Member]
Condensed Financial Statements, Captions [Line Items]
Net sales	-190,324	-215,728
Cost of sales	-193,662	-216,454
Gross profit	3,338	726
Operating income (loss)	3,338	726
Intercompany interest expense (income), net		30
Other expense (income), net	3
Equity in loss (earnings) of subsidiaries	132,988	82,348
Income before income taxes	-129,653	-81,652
Provision for (benefit from) income taxes	1,176	252
Net income	-130,829	-81,904
Comprehensive income (loss)	93,737	-79,542
Parent Guarantor [Member]
Condensed Financial Statements, Captions [Line Items]
Selling, general and administrative expenses	3,107	2,706
Operating income (loss)	-3,107	-2,706
Intercompany interest expense (income), net	3	2
Other expense (income), net	2,476
Equity in loss (earnings) of subsidiaries	-43,290	-19,794
Income before income taxes	37,704	17,086
Net income	37,704	17,086
Comprehensive income (loss)	-74,579	15,905
Issuers [Member]
Condensed Financial Statements, Captions [Line Items]
Cost of sales	156	157
Gross profit	-156	-157
Selling, general and administrative expenses	82	685
Operating income (loss)	-238	-842
Interest expense, net	28,692	31,590
Intercompany interest expense (income), net	-18,847	-19,831
Other expense (income), net	-2,966	-3,088
Equity in loss (earnings) of subsidiaries	-53,480	-35,386
Income before income taxes	46,363	25,873
Provision for (benefit from) income taxes	969
Net income	45,394	25,873
Comprehensive income (loss)	-66,889	24,692
Guarantor Subsidiaries [Member]
Condensed Financial Statements, Captions [Line Items]
Net sales	936,736	1,227,563
Cost of sales	840,114	1,147,077
Gross profit	96,622	80,486
Selling, general and administrative expenses	43,884	42,076
Equity in earnings of unconsolidated affiliates	36,707	14,950
Operating income (loss)	89,445	53,360
Interest expense, net	133	312
Intercompany interest expense (income), net	16,239	16,647
Other expense (income), net	-4,054	-824
Equity in loss (earnings) of subsidiaries	-36,218	-27,168
Income before income taxes	113,345	64,393
Provision for (benefit from) income taxes	16,573	9,182
Net income	96,772	55,211
Comprehensive income (loss)	-13,012	54,636
Non-Guarantor Subsidiaries [Member]
Condensed Financial Statements, Captions [Line Items]
Net sales	271,853	347,297
Cost of sales	268,578	329,723
Gross profit	3,275	17,574
Selling, general and administrative expenses	4,702	4,563
Operating income (loss)	-1,427	13,011
Interest expense, net	31	916
Intercompany interest expense (income), net	2,605	3,152
Other expense (income), net	8,092	4,807
Income before income taxes	-12,155	4,136
Provision for (benefit from) income taxes	-818	3,316
Net income	-11,337	820
Comprehensive income (loss)	($13,836)	$214

Supplemental_Guarantor_Condens5

Supplemental Guarantor Condensed Consolidating Financial Statements - Supplemental Condensed Consolidating Statement of Cash Flows (Detail) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Cash flows from operating activities
Cash provided by (used in) operating activities	$42,914	($1,183)
Cash flows from investing activities
Capital expenditures	-27,670	-41,141
Payment for working capital adjustment from sale of business		-700
Proceeds from the sale of businesses and other assets	560
Distributions from unconsolidated affiliates		978
Cash used in investing activities	-27,110	-40,863
Cash flows from financing activities
Short-term borrowings, net	-9,487	-14,837
Proceeds from Accounts Receivable Securitization Facility		60,971
Repayments of Accounts Receivable Securitization Facility		-61,538
Cash used in financing activities	-9,487	-15,404
Effect of exchange rates on cash	-8,406	36
Net change in cash and cash equivalents	-2,089	-57,414
Cash and cash equivalents-beginning of period	220,786	196,503
Cash and cash equivalents-end of period	218,697	139,089
Parent Guarantor [Member]
Cash flows from operating activities
Cash provided by (used in) operating activities	-636	-15
Cash flows from financing activities
Intercompany short-term borrowings, net	65	30
Cash used in financing activities	65	30
Effect of exchange rates on cash	-1
Net change in cash and cash equivalents	-572	15
Cash and cash equivalents-beginning of period	904	2
Cash and cash equivalents-end of period	332	17
Issuers [Member]
Cash flows from operating activities
Cash provided by (used in) operating activities	-36,376	-33,173
Cash flows from investing activities
Investments in subsidiaries		-10,000
Cash used in investing activities		-10,000
Cash flows from financing activities
Intercompany short-term borrowings, net	34,046	44,908
Short-term borrowings, net		-2,188
Cash used in financing activities	34,046	42,720
Effect of exchange rates on cash	349	2
Net change in cash and cash equivalents	-1,981	-451
Cash and cash equivalents-beginning of period	2,653	954
Cash and cash equivalents-end of period	672	503
Guarantor Subsidiaries [Member]
Cash flows from operating activities
Cash provided by (used in) operating activities	42,502	14,291
Cash flows from investing activities
Capital expenditures	-22,689	-38,254
Payment for working capital adjustment from sale of business		-700
Proceeds from the sale of businesses and other assets	560
Distributions from unconsolidated affiliates		978
Intercompany investing activities	15,691	-76,566
Cash used in investing activities	-6,438	-114,542
Cash flows from financing activities
Intercompany short-term borrowings, net	-48,986	13,050
Short-term borrowings, net	-66	-70
Contributions from parent companies		10,000
Proceeds from issuance of intercompany indebtedness		13,000
Cash used in financing activities	-49,052	35,980
Effect of exchange rates on cash	-6,804	322
Net change in cash and cash equivalents	-19,792	-63,949
Cash and cash equivalents-beginning of period	166,106	154,770
Cash and cash equivalents-end of period	146,314	90,821
Non-Guarantor Subsidiaries [Member]
Cash flows from operating activities
Cash provided by (used in) operating activities	37,424	17,714
Cash flows from investing activities
Capital expenditures	-4,981	-2,887
Cash used in investing activities	-4,981	-2,887
Cash flows from financing activities
Intercompany short-term borrowings, net	-816	5,578
Short-term borrowings, net	-9,421	-12,579
Proceeds from Accounts Receivable Securitization Facility		60,971
Repayments of Accounts Receivable Securitization Facility		-61,538
Cash used in financing activities	-10,237	-7,568
Effect of exchange rates on cash	-1,950	-288
Net change in cash and cash equivalents	20,256	6,971
Cash and cash equivalents-beginning of period	51,123	40,777
Cash and cash equivalents-end of period	71,379	47,748
Eliminations [Member]
Cash flows from investing activities
Investments in subsidiaries		10,000
Intercompany investing activities	-15,691	76,566
Cash used in investing activities	-15,691	86,566
Cash flows from financing activities
Intercompany short-term borrowings, net	15,691	-63,566
Contributions from parent companies		-10,000
Proceeds from issuance of intercompany indebtedness		-13,000
Cash used in financing activities	$15,691	($86,566)