Avient (AVNT) 10-Q 1 May 15 2015 Q1 Quarterly report Financial data

Document_And_Entity_Informatio

Document And Entity Information	3 Months Ended
	Mar. 31, 2015
Document And Entity Information [Abstract]
Entity Registrant Name	POLYONE CORP
Entity Central Index Key	1122976
Document Type	10-Q
Document Period End Date	31-Mar-15
Amendment Flag	FALSE
Document Fiscal Year Focus	2015
Document Fiscal Period Focus	Q1
Current Fiscal Year End Date	-19
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding	89,190,335

Condensed_Consolidated_Stateme

Condensed Consolidated Statements Of Income (USD $)	3 Months Ended
In Millions, except Per Share data, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Income Statement [Abstract]
Sales	$873.10	$1,002.30
Cost of sales	703.3	814.1
Gross margin	169.8	188.2
Selling and administrative expense	99.7	131.8
Operating income	70.1	56.4
Interest expense, net	-16.1	-15.5
Other expense, net	-0.7	-1
Income before income taxes	53.3	39.9
Income tax expense	-23.1	-10.7
Net income	30.2	29.2
Net loss attributable to noncontrolling interests	0	0.2
Net income attributable to PolyOne common shareholders	$30.20	$29.40
Earnings per common share attributable to PolyOne common shareholders - Basic:
Earnings per common share attributable to PolyOne common shareholders - Basic: (in usd per share)	$0.34	$0.31
Earnings per common share attributable to PolyOne common shareholders - Diluted:
Earnings per common share attributable to PolyOne common shareholders - Diluted: (in usd per share)	$0.34	$0.31
Weighted-average shares used to compute earnings per share:
Basic (in shares)	89.2	94.5
Diluted (in shares)	90.1	95.7
Cash dividends declared per common stock (in usd per share)	$0.10	$0.08

Consolidated_Statements_Of_Com

Consolidated Statements Of Comprehensive Income (USD $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Statement of Comprehensive Income [Abstract]
Net income	$30.20	$29.20
Other comprehensive income
Translation adjustments	-17.9	-0.7
Total comprehensive income	12.3	28.5
Comprehensive loss attributable to noncontrolling interests	0	0.2
Comprehensive income attributable to PolyOne common shareholders	$12.30	$28.70

Condensed_Consolidated_Balance

Condensed Consolidated Balance Sheets (USD $)	Mar. 31, 2015	Dec. 31, 2014
In Millions, unless otherwise specified
Current assets:
Cash and cash equivalents	$226.40	$238.60
Accounts receivable, net	445	396.8
Inventories, net	297.9	309
Other current assets	83.8	98.3
Total current assets	1,053.10	1,042.70
Property, net	578.1	596.7
Goodwill	591.7	590.6
Intangible assets, net	355.8	362.7
Other non-current assets	110.2	118.5
Total assets	2,688.90	2,711.20
Current liabilities:
Short-term and current portion of long-term debt	61.9	61.8
Accounts payable	382.1	365.9
Accrued expenses and other liabilities	110.8	173.5
Total current liabilities	554.8	601.2
Non-current liabilities:
Long-term debt	1,049.20	962
Pension and other post-retirement benefits	77.9	103.7
Deferred income taxes	92.8	88.8
Other non-current liabilities	155.1	178.3
Total non-current liabilities	1,375	1,332.80
Shareholders’ equity:
PolyOne shareholders’ equity	758.2	776.3
Noncontrolling interests	0.9	0.9
Total equity	759.1	777.2
Total liabilities and shareholders’ equity	$2,688.90	$2,711.20

Condensed_Consolidated_Stateme1

Condensed Consolidated Statements Of Cash Flows (USD $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Operating Activities
Net income	$30.20	$29.20
Adjustments to reconcile net income to net cash used by operating activities:
Depreciation and amortization	25.1	32.8
Provision for doubtful accounts	0	0.2
Share-based compensation expense	1.9	3.8
Change in assets and liabilities, net of effect of acquisitions and divestitures:
Increase in accounts receivable	-55.8	-81.7
Decrease in inventories	7.4	5.9
Increase in accounts payable	22.2	43.2
Decrease in pension and other post-retirement benefits	-24	-18.4
Decrease in accrued expenses and other assets and liabilities - net	-64.8	-89.9
Net cash used by operating activities	-57.8	-74.9
Investing Activities
Capital expenditures	-15.1	-17.5
Proceeds from sale of equity affiliate and other assets	1.1	26.8
Net cash (used) provided by investing activities	-14	9.3
Financing Activities
Repayment of long-term debt	0	-8
Borrowings under credit facilities	274.7	20.9
Repayments under credit facilities	-187.4	-20.9
Purchase of common shares	-19.6	-51
Exercise of share awards	3.8	5.4
Cash dividends paid	-9	-7.6
Net cash provided (used) by financing activities	62.5	-61.2
Effect of exchange rate changes on cash	-2.9	-0.1
Decrease in cash and cash equivalents	-12.2	-126.9
Cash and cash equivalents at beginning of period	238.6	365.2
Cash and cash equivalents at end of period	$226.40	$238.30

Basis_Of_Presentation

Basis Of Presentation	3 Months Ended
	Mar. 31, 2015
Accounting Policies [Abstract]
Basis Of Presentation	Note 1 — BASIS OF PRESENTATION
	The accompanying unaudited condensed consolidated financial statements have been prepared in accordance with Form 10-Q instructions and in the opinion of management contain all adjustments, consisting of normal recurring accruals, necessary to present fairly the financial position, results of operations and cash flows for the periods presented. The preparation of financial statements in conformity with generally accepted accounting principles, requires management to make estimates and assumptions that affect the amounts reported in the financial statements and accompanying notes. Actual results could differ from these estimates. These interim financial statements should be read in conjunction with the financial statements and accompanying notes included in the annual report on Form 10-K for the year ended December 31, 2014 of PolyOne Corporation.
	Operating results for the three months ended March 31, 2015 are not necessarily indicative of the results that may be attained in subsequent periods or for the year ending December 31, 2015.
	Accounting Standards Not Yet Adopted
	In April 2015, the Financial Accounting Standards Board issued Auditing Standards Update 2015-03, "Interest-Imputation of Interest (Subtopic 835-30) - Simplifying the Presentation of Debt Issuance Costs" (ASU 2015-03), which requires unamortized debt issuance costs to be presented as a reduction of the corresponding debt liability rather than a separate asset. ASU 2015-03 will be adopted on the effective date for the Company, which is January 1, 2016.
	In May 2014, the Financial Accounting Standards Board issued Auditing Standards Update 2014-09, "Revenue from Contracts with Customers" (ASU 2014-09), which clarifies existing accounting literature relating to how and when a company recognizes revenue. Under ASU 2014-09, a company will recognize revenue when it transfers promised goods or services to customers in an amount that reflects the consideration to which the company expects to be entitled in exchange for those goods and services. ASU 2014-09 will be effective for the Company on January 1, 2017, with a possible one-year deferral as a result of a current proposal by the Financial Accounting Standards Board. The Company is in the process of determining what impact, if any, the adoption of ASU 2014-09 will have on its financial position, results of operations and cash flows.

Business_Combinations

Business Combinations	3 Months Ended
	Mar. 31, 2015
Business Combinations [Abstract]
Business Combinations	Note 2 — BUSINESS COMBINATIONS
	On December 1, 2014, the Company acquired the specialty assets of Accella Performance Materials (Accella), a leading North American manufacturer of liquid polymer formulations, for $47.2 million, net of cash acquired. The results of operations of Accella were included in the Company’s Consolidated Statements of Income for the period subsequent to the date of the acquisition and are reported in the Global Color, Additives and Inks segment. The preliminary purchase price allocation resulted in goodwill of $24.6 million and intangible assets of $16.0 million. We do not expect further purchase price adjustments to be material. Goodwill recognized as a result of this acquisition is deductible for tax purposes.

Goodwill_And_Intangible_Assets

Goodwill And Intangible Assets	3 Months Ended
	Mar. 31, 2015
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill And Intangible Assets	Note 3 — GOODWILL AND INTANGIBLE ASSETS
	Goodwill as of March 31, 2015 and December 31, 2014, and changes in the carrying amount of goodwill by segment were as follows:
	(In millions)	Global  Specialty			Global Color,			Designed Structures and Solutions			Performance		PolyOne		Total
		Engineered			Additives and						Products  and		Distribution
		Materials			Inks						Solutions
	Balance December 31, 2013	$	99.9		$	310.2		$	136.3		$	11	$	1.6	$	559
	Acquisitions of businesses	—			23.5			8.4			0.2		—		32.1
	Currency translation and other adjustments	(0.5		)	—			—			—		—		(0.5		)
	Balance December 31, 2014	99.4			333.7			144.7			11.2		1.6		590.6
	Acquisitions of businesses	—			1.9			—			—		—		1.9
	Currency translation and other adjustments	(0.7		)	(0.1		)	—			—		—		(0.8		)
	Balance March 31, 2015	$	98.7		$	335.5		$	144.7		$	11.2	$	1.6	$	591.7
	Indefinite and finite-lived intangible assets consisted of the following:
		As of March 31, 2015
	(In millions)	Acquisition			Accumulated			Currency			Net
		Cost			Amortization			Translation
	Customer relationships	$	196.3		$	(34.9	)	$	—		$	161.4
	Patents, technology and other	132.9			(37.9		)	(0.3		)	94.7
	Indefinite-lived trade names	96.3			—			—			96.3
	In-process research and development	3.4			—			—			3.4
	Total	$	428.9		$	(72.8	)	$	(0.3	)	$	355.8
		As of December 31, 2014
	(In millions)	Acquisition			Accumulated			Currency			Net
		Cost			Amortization			Translation
	Customer relationships	$	198.1		$	(32.6	)	$	—		$	165.5
	Patents, technology and other	132.9			(35.3		)	(0.1		)	97.5
	Indefinite-lived trade names	96.3			—			—			96.3
	In-process research and development	3.4			—			—			3.4
	Total	$	430.7		$	(67.9	)	$	(0.1	)	$	362.7

Employee_Separation_and_Restru

Employee Separation and Restructuring Costs	3 Months Ended
	Mar. 31, 2015
Restructuring and Related Activities [Abstract]
Employee Separation and Restructuring Costs	Note 4 — EMPLOYEE SEPARATION AND RESTRUCTURING COSTS
	In 2013, PolyOne determined it would close seven former Spartech Corporation (Spartech) manufacturing facilities and one administrative office and relocate operations to other PolyOne facilities. The closure of the manufacturing facilities are part of the Company’s efforts to improve service, on time delivery and quality as we align assets with our customers' needs. In addition to these actions, PolyOne incurred severance costs related to former Spartech executives and other employees, as well as fixed asset-related charges and other ongoing costs associated with restructuring actions that were underway prior to PolyOne's acquisition of Spartech. We also incurred costs associated with further asset rationalization at Spartech locations that were not part of the above actions.
	The Company has incurred $113.1 million of charges in connection with the Spartech actions noted above. These costs include $25.9 million of severance, $46.2 million of asset-related charges, including accelerated depreciation, and $41.0 million of other associated costs. We expect to incur approximately $6.0 million of additional costs related to these actions, primarily in the second quarter of 2015.
	The table below summarizes restructuring activity related to Spartech since the date of acquisition.
	(In millions)	Long-Lived Asset Charges			Employee Separation			Other Associated Costs			Total
	Accrual balance at December 31, 2013	$	—		$	15.1		$	—		$	15.1
	Charged to expense	27.3			5.1			27.3			59.7
	Cash payments	—			(17.5		)	(27.3		)	(44.8		)
	Non-cash utilization	(27.3		)	—			—			(27.3		)
	Accrual balance at December 31, 2014	$	—		$	2.7		$	—		$	2.7
	Charged to expense(1)	5.3			(0.3		)	4.3			9.3
	Cash payments	—			(1.6		)	(4.3		)	(5.9		)
	Non-cash utilization	(5.3		)	—			—			(5.3		)
	Accrual balance at March 31, 2015	$	—		$	0.8		$	—		$	0.8
	In June 2014, PolyOne determined it would close its Diadema and Joinville, Brazil facilities that were acquired in 2011 with the acquisition of Uniplen Industria de Polimeros Ltda. These actions are expected to accelerate our specialty strategy in Brazil, streamline operations and improve our financial performance in the region. The table below summarizes restructuring activity related to Brazil since the date of these closures. We do not expect the remaining charges related to these actions to have a material impact to our financial statements going forward.
	(In millions)	Asset Charges			Employee Separation			Other Associated Costs			Total
	Accrual balance at December 31, 2013	$	—		$	—		$	—		$	—
	Charged to expense	10.7			2.9			3.4			17
	Cash payments	—			(1.8		)	(3.4		)	(5.2		)
	Non-cash utilization	(10.7		)	—			—			(10.7		)
	Accrual balance at December 31, 2014	$	—		$	1.1		$	—		$	1.1
	Charged to expense(1)	0.2			—			0.4			0.6
	Cash payments	—			(0.7		)	(0.4		)	(1.1		)
	Non-cash utilization	(0.2		)	—			—			(0.2		)
	Accrual balance at March 31, 2015	$	—		$	0.4		$	—		$	0.4
	(1) In addition to the restructuring charges for Spartech and the closure of our Brazil facilities, there was $0.7 million in additional employee separation and restructuring costs during the three months ended March 31, 2015, which are not reflected in the tables above.
	During the three months ended March 31, 2015, we recognized total employee separation and plant restructuring charges of $10.6 million, which included $7.9 million recognized within Cost of goods sold and $2.7 million recognized in Selling and administrative expenses. During the three months ended March 31, 2014, we recognized total employee separation and plant restructuring charges of $17.9 million, of which $15.8 million related to the Spartech realignment actions. We recognized $11.0 million within Cost of goods sold and $6.9 million recognized in Selling and administrative expenses for the three months ended March 31, 2014.

Inventories_Net

Inventories, Net	3 Months Ended
	Mar. 31, 2015
Inventory, Net [Abstract]
Inventories, Net	Note 5 — INVENTORIES, NET
	Components of Inventories, net are as follows:
	(In millions)	March 31, 2015		December 31, 2014
	Finished products	$	181	$	187.8
	Work in process	4.7		4.1
	Raw materials and supplies	112.2		117.1
	Inventories, net	$	297.9	$	309

Property_Net

Property, Net	3 Months Ended
	Mar. 31, 2015
Property, Plant and Equipment [Abstract]
Property, Net	Note 6 — PROPERTY, NET
	Components of Property, net are as follows:
	(In millions)	March 31, 2015			December 31, 2014
	Land	$	46.6		$	49.2
	Buildings	307			309.2
	Machinery and equipment	1,068.80			1,077.20
	Property, gross	1,422.40			1,435.60
	Less accumulated depreciation and amortization	(844.3		)	(838.9		)
	Property, net	$	578.1		$	596.7

Income_Taxes

Income Taxes	3 Months Ended
	Mar. 31, 2015
Income Tax Disclosure [Abstract]
Income Taxes	Note 7 — INCOME TAXES
	Our effective income tax rate was 43.3% for the first quarter of 2015 compared to 26.8% for the first quarter of 2014. The increase in the effective tax rate of 16.5% was primarily driven by two discrete items in 2015 and one discrete item in 2014. The 2015 tax rate was increased 14.9% as a result of foreign court rulings during the first quarter of 2015 that affected tax positions taken in prior years. This was partially offset by a 6.3% benefit associated with amendments to our 2004 U.S. income tax return for the inclusion of foreign tax credits. These two items result in a net unfavorable impact to our 2015 rate of 8.6%. The effective tax rate in the first quarter of 2014 was favorably impacted 10.0% by settlements of outstanding tax issues with U.S. and foreign tax authorities.
	With regard to the court ruling referenced above, the Company had previously recorded $8.8 million as a liability for uncertain tax positions. With the court ruling, the Company recognized an additional $7.9 million liability and reclassified the entire amount to income taxes payable.
	We are in the process of evaluating the ability to use foreign tax credits in our U.S. income tax returns for 2005 to 2012. We believe this may result in additional tax benefits in the future.

WeightedAverage_Shares_Used_In

Weighted-Average Shares Used In Computing Earnings Per Share	3 Months Ended
	Mar. 31, 2015
Earnings Per Share [Abstract]
Weighted-Average Shares Used In Computing Earnings Per Common Share	Note 8 — WEIGHTED-AVERAGE SHARES USED IN COMPUTING EARNINGS PER COMMON SHARE
		Three Months Ended March 31,
	(In millions)	2015	2014
	Weighted-average common shares outstanding – basic	89.2	94.5
	Plus dilutive impact of share-based compensation	0.9	1.2
	Weighted-average common shares – diluted	90.1	95.7
	For the three months ended March 31, 2015 and 2014, 0.1 million and 0.2 million of equity-based awards, respectively, were excluded from the computation of diluted earnings per common share because their effect would have been anti-dilutive.

Employee_Benefit_Plans

Employee Benefit Plans	3 Months Ended
	Mar. 31, 2015
Defined Benefit Pension Plans and Defined Benefit Postretirement Plans Disclosure [Abstract]
Employee Benefit Plans	Note 9 — EMPLOYEE BENEFIT PLANS
	Components of defined benefit pension plan net periodic gains are as follows:
		Three Months Ended March 31,
	(In millions)	2015			2014
	Service cost	$	0.4		$	0.4
	Interest cost	5.3			6.3
	Expected return on plan assets	(8.2		)	(8.1		)
	Net periodic benefit gains	$	(2.5	)	$	(1.4	)
	Components of post-retirement health care plan benefit costs are as follows:
		Three Months Ended March 31,
	(In millions)	2015			2014
	Interest cost	$	0.1		$	0.2
	Net periodic benefit costs	$	0.1		$	0.2

Financing_Arrangements

Financing Arrangements	3 Months Ended
	Mar. 31, 2015
Debt Disclosure [Abstract]
Financing Arrangements	Note 10 — FINANCING ARRANGEMENTS
	Debt consists of the following instruments:
	(Dollars in millions)	31-Mar-15		31-Dec-14
	7.500% debentures due 2015	$	48.7	$	48.7
	Revolving credit facility due 2018	132.2		45
	7.375% senior notes due 2020	316.6		316.6
	5.250% senior notes due 2023	600		600
	Other debt	13.6		13.5
	Total long-term debt	1,111.10		1,023.80
	Less current portion	61.9		61.8
	Total long-term debt, net of current portion	$	1,049.20	$	962
	The Company maintains a senior secured revolving credit facility with a maturity date of March 1, 2018, which provides a maximum borrowing facility size of $400.0 million, subject to a borrowing base with advances against certain U.S. and Canadian accounts receivable and inventory. We have the option to increase the availability under the facility to $450.0 million, subject to meeting certain requirements and obtaining commitments for such increase. The senior secured revolving credit facility has a U.S. and a Canadian line of credit. Currently there are no borrowings on the Canadian portion of the facility. Advances under the U.S. portion of our revolving credit facility bear interest, at the Company’s option, at a Base Rate or a LIBOR Rate plus an applicable margin. The Base Rate is a fluctuating rate equal to the greater of (i) the Federal Funds Rate plus one-half percent, (ii) the prevailing LIBOR Rate plus one percent, and (iii) the prevailing Prime Rate. The applicable margins varies based on the Company’s daily average excess availability during the previous quarter. The weighted average interest rate under this facility for the first quarter of 2015 was 2.38%.
	As of March 31, 2015, we were in compliance with all covenants, had $132.2 million outstanding borrowings and had availability of $146.0 million under this facility. Borrowings under this facility during the first quarter increased $87.2 million driven by the seasonality of our working capital needs, payment of our annual incentives and a $20.0 million voluntary pension contribution.
	The Company also has a credit line of $16.0 million with Saudi Hollandi Bank with an interest rate equal to the Saudi Arabia Interbank Offered Rate (SAIBOR) plus a fixed rate of 0.85%. The credit line is being used to fund capital expenditures related to the manufacturing facility in Jeddah, Saudi Arabia and is subject to an annual renewal. As of March 31, 2015, letters of credit under the credit line were $0.2 million and borrowings were $13.1 million with an interest rate of 1.81%.
	The estimated fair value of PolyOne’s debt instruments at March 31, 2015 and December 31, 2014 was $1,148.4 million and $1,045.4 million, respectively, compared to carrying values of $1,111.1 million and $1,023.8 million as of March 31, 2015 and December 31, 2014, respectively. The fair value of PolyOne’s debt instruments was estimated using prevailing market interest rates on debt with similar creditworthiness, terms and maturities and represent Level 2 measurements within the fair value hierarchy.

Segment_Information

Segment Information	3 Months Ended
	Mar. 31, 2015
Segment Reporting [Abstract]
Segment Information	Note 11 — SEGMENT INFORMATION
	Operating income is the primary measure that is reported to our chief operating decision maker for purposes of allocating resources to the segments and assessing their performance. Operating income at the segment level does not include: corporate general and administrative expenses that are not allocated to segments; intersegment sales and profit eliminations; charges related to specific strategic initiatives such as the consolidation of operations; restructuring activities, including employee separation costs resulting from personnel reduction programs, plant closure and phase-in costs; executive separation agreements; share-based compensation costs; asset impairments; environmental remediation costs and other liabilities for facilities no longer owned or closed in prior years; gains and losses on the divestiture of joint ventures and equity investments; actuarial gains and losses associated with our pension and other post-retirement benefit plans; and certain other items that are not included in the measure of segment profit or loss that is reported to and reviewed by our chief operating decision maker. These costs are included in Corporate and eliminations.
	PolyOne has five reportable segments: (1) Global Color, Additives and Inks; (2) Global Specialty Engineered Materials; (3) Designed Structures and Solutions; (4) Performance Products and Solutions; and (5) PolyOne Distribution.
	Segment information for the three months ended March 31, 2015 and 2014 is as follows:
		Three Months Ended March 31, 2015								Three Months Ended March 31, 2014
	(In millions)	Sales to		Total			Operating			Sales to		Total Sales			Operating
		External		Sales			Income			External					Income
		Customers								Customers
	Global Color, Additives and Inks	$	206	$	208.5		$	33.8		$	215.5	$	219.6		$	30.4
	Global Specialty Engineered Materials	130.6		141.9			23.1			147		157.4			18.3
	Designed Structures and Solutions	118.7		119.1			3.2			173.5		173.6			11.2
	Performance Products and Solutions	155.7		175.9			11.5			185.3		207.6			16
	PolyOne Distribution	262.1		265.7			15.7			281		284.1			17.2
	Corporate and eliminations	—		(38.0		)	(17.2		)	—		(40.0		)	(36.7		)
	Total	$	873.1	$	873.1		$	70.1		$	1,002.30	$	1,002.30		$	56.4
		Total Assets
	(In millions)	March 31, 2015		December 31, 2014
	Global Color, Additives and Inks	$	941.8	$	937.7
	Global Specialty Engineered Materials	371.6		370.5
	Designed Structures and Solutions	477.2		490.2
	Performance Products and Solutions	267		265.5
	PolyOne Distribution	229.2		214.2
	Corporate and eliminations	402.1		433.1
	Total assets	$	2,688.90	$	2,711.20

Commitments_And_Contingencies

Commitments And Contingencies	3 Months Ended
	Mar. 31, 2015
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	Note 12 — COMMITMENTS AND CONTINGENCIES
	Environmental — We or our subsidiaries have been notified by federal and state environmental agencies and by private parties that we may be a potentially responsible party (PRP) in connection with the investigation and remediation of certain environmental sites. While government agencies frequently assert that PRPs are jointly and severally liable at these sites, in our experience, the interim and final allocations of liability costs are generally made based on the relative contribution of waste. We initiate corrective and preventive environmental projects of our own to ensure safe and lawful activities at our operations. We believe that compliance with current governmental regulations at all levels will not have a material adverse effect on our financial condition.
	In September 2007, we were informed of rulings by the United States District Court for the Western District of Kentucky on several pending motions in the case of Westlake Vinyls, Inc. v. Goodrich Corporation, et al., which had been pending since 2003. The Court held that PolyOne must pay the remediation costs at the former Goodrich Corporation (now Westlake Vinyls, Inc.) Calvert City facility, together with certain defense costs of Goodrich Corporation. The rulings also provided that PolyOne can seek indemnification for contamination attributable to Westlake Vinyls.
	The environmental obligation at the site arose as a result of an agreement between The B.F.Goodrich Company (n/k/a Goodrich Corporation) and our predecessor, The Geon Company, at the time of the initial public offering in 1993, by which the Geon Company became a public company, to indemnify Goodrich Corporation for environmental costs at the site. At the time, neither PolyOne nor The Geon Company ever owned or operated the facility. Following the Court rulings, the parties to the litigation entered into settlement negotiations and agreed to settle all claims regarding past environmental costs incurred at the site. The settlement agreement provides a mechanism to pursue allocations of future remediation costs at the Calvert City site to Westlake Vinyls, Inc. While we do not currently assume any allocation of costs in our current reserve, we will adjust our reserve, in the future, consistent with any such future allocation of costs.
	A remedial investigation and feasibility study (RIFS) is underway at Calvert City. During the third quarter of 2013, we submitted a remedial investigation report to the United States Environmental Protection Agency (USEPA). The USEPA has required certain changes to the remedial investigation report, and development of a final report by the USEPA is ongoing. Further, we have undertaken steps to develop a feasibility study, including engaging a third party to perform ground water modeling at this site. We expect the remedial investigation report and feasibility study to be finalized at the end of 2015, and we continue to pursue available insurance coverage. No receivable has been recognized for future recoveries.
	On March 13, 2013, PolyOne acquired Spartech. One of Spartech's subsidiaries, Franklin-Burlington Plastics, Inc. (Franklin-Burlington), operated a plastic resin compounding facility in Kearny, New Jersey, located adjacent to the Passaic River. The USEPA has requested that companies located in the area of the lower Passaic River, including Franklin-Burlington, cooperate in an investigation of contamination of the lower Passaic River. In response, Franklin-Burlington and approximately 70 other companies (collectively, the Cooperating Parties) agreed, pursuant to an Administrative Order of Consent with the USEPA, to assume responsibility for development of a RIFS of the lower Passaic River. The RIFS costs are exclusive of any costs that may ultimately be required to remediate the lower Passaic River area being studied or costs associated with natural resource damages that may be assessed. By agreeing to bear a portion of the cost of the RIFS, Franklin-Burlington did not admit to any liability or agree to bear any such remediation or natural resource damage costs.
	In April 2014, the USEPA released a Focused Feasibility Study for public comment for a portion of the lower Passaic River. The Cooperating Parties, along with other interested parties, have submitted comments, and the USEPA is currently reviewing the comments. In February 2015, the Cooperating Parties submitted a remedial investigation report for the lower Passaic River and expect to submit a feasibility study by the end of 2015. Further, in March 2015, Franklin-Burlington, along with nine other PRPs, submitted a de minimis settlement petition to the USEPA, asserting the ten entities contributed little or no impact to the lower Passaic River and seeking a meeting to commence settlement discussions. In response, the USEPA stated that it views the issuance of a Record of Decision for the Focused Feasibility Study area, expected later in 2015, as the appropriate time for de minimis discussions.
	Given the uncertainties related to the lower Passaic River, including the fact that the final remedial actions and scope, an allocation to Franklin-Burlington, if any, or a final resolution of the de minimis petition, have not yet been determined, we are not able to assess or estimate our remedial liability, if any, related to this matter.
	During the three months ended March 31, 2015 and 2014, PolyOne recognized $1.5 million and $0.9 million, respectively, of expense related to environmental remediation activities. During the three months ended March 31, 2015, we received $0.5 million of insurance recoveries related to previously incurred environmental costs. These expenses and gains associated with these reimbursements are included within Cost of sales within our Condensed Consolidated Statements of Income.
	Based on estimates that were prepared by our environmental engineers and consultants, our reserve balance was $120.5 million at March 31, 2015 and $121.1 million at December 31, 2014, for probable future environmental expenditures relating to remediation sites. The accruals represent our best estimate of the remaining probable remediation costs, based upon information and technology that is currently available and our view of the most likely remedy. Depending upon the results of future testing, completion and results of remedial investigation and feasibility studies, the ultimate remediation alternatives undertaken, changes in regulations, new information, newly discovered conditions and other factors, it is reasonably possible that we could incur additional costs in excess of the amount accrued at March 31, 2015. However, such additional costs, if any, cannot be currently estimated.
	Guarantee — On February 28, 2011, we sold our 50% equity interest in SunBelt Chlor Alkali Partnership (SunBelt) to Olin Corporation (Olin) for $132.3 million in cash and the assumption by Olin of the obligations under our guarantee of senior secured notes issued by SunBelt. The remaining guarantee is $18.3 million as of March 31, 2015. Unless the guarantee is formally assigned to Olin, we remain obligated under the guarantee, although Olin has agreed to indemnify us for amounts that we may be obligated to pay under the guarantee.

Derivative_Instruments

Derivative Instruments	3 Months Ended
	Mar. 31, 2015
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivative Instruments	Note 13 — DERIVATIVE INSTRUMENTS
	When translating results from foreign operations into U.S. dollars, we are subject to foreign exchange related risks in our operating results. We are also exposed to foreign exchange risk arising from intercompany transactions denominated in various foreign currencies that are subject to foreign exchange rate movement. To mitigate these risks, we enter into forward contracts. The counterparties to these instruments are financial institutions with strong credit ratings. PolyOne maintains control over the size of positions entered into with any one counterparty and regularly monitors the credit ratings of these institutions.
	Derivative financial instruments are accounted for at fair value and recognized as assets or liabilities in the Condensed Consolidated Balance Sheets. These instruments are not designated as a hedge, and therefore, any gain or loss is immediately recognized in income.
	The increase in the notional amount of foreign currency forwards in the first quarter of 2015 is a result of increased intercompany loan balances. The fair value of derivative financial instruments recorded in the Condensed Consolidated Balance Sheets are as follows:
		March 31, 2015
	(In millions)	Notional		Other current assets
	Foreign currency forwards	$	39	$	0.2
		December 31, 2014
	(In millions)	Notional		Other current assets
	Foreign currency forwards	$	5.1	$	—
	The effects of derivative instruments on our Condensed Consolidated Statements of Income are as follows:
		Three Months Ended March 31,
	(In millions)	2015		2014		Location
	Foreign currency forwards - gains (losses)	$	1	$	—	Other expense, net

Equity

Equity	3 Months Ended
	Mar. 31, 2015
Equity [Abstract]
Equity	Note 14 — EQUITY
	Changes in equity for the three months ended March 31, 2015 and March 31, 2014 are as follows:
	(In millions)	PolyOne			Noncontrolling			Total
		Shareholders'			Interests			Equity
		Equity
	Balance at December 31, 2014	$	776.3		$	0.9		$	777.2
	Net income	30.2			—			30.2
	Other comprehensive income
	Translation adjustments	(17.9		)	—			(17.9		)
	Total comprehensive income	12.3			—			12.3
	Cash dividend declared	(8.9		)	—			(8.9		)
	Repurchase of common shares	(19.6		)	—			(19.6		)
	Share-based incentive plan activity	(1.9		)	—			(1.9		)
	Balance at March 31, 2015	$	758.2		$	0.9		$	759.1
	Balance at December 31, 2013	$	976.8		$	1.7		$	978.5
	Net income	29.4			(0.2		)	29.2
	Other comprehensive income
	Translation adjustments	(0.7		)	—			(0.7		)
	Total comprehensive income	28.7			(0.2		)	28.5
	Cash dividend declared	(7.6		)	—			(7.6		)
	Repurchase of common shares	(51.0		)	—			(51.0		)
	Share-based incentive plan activity	0.7			—			0.7
	Balance at March 31, 2014	$	947.6		$	1.5		$	949.1
	Changes in accumulated other comprehensive loss year-to-date as of March 31, 2015 and 2014 were as follows:
	(In millions)	Cumulative Translation Adjustment			Pension and Other Post-Retirement Benefits			Unrealized Gain in Available-for-Sale Securities			Total
	Balance at January 1, 2015	$	(47.7	)	$	5.2		$	0.2		$	(42.3	)
	Translation adjustments	(17.9		)	—			—			(17.9		)
	Balance at March 31, 2015	$	(65.6	)	$	5.2		$	0.2		$	(60.2	)
	Balance at January 1, 2014	$	(20.2	)	$	5.2		$	0.2		$	(14.8	)
	Translation adjustments	(0.7		)	—			—			(0.7		)
	Balance at March 31, 2014	$	(20.9	)	$	5.2		$	0.2		$	(15.5	)

Basis_of_Presentation_Policies

Basis of Presentation (Policies)	3 Months Ended
	Mar. 31, 2015
Accounting Policies [Abstract]
Basis of Presentation	Note 1 — BASIS OF PRESENTATION
	The accompanying unaudited condensed consolidated financial statements have been prepared in accordance with Form 10-Q instructions and in the opinion of management contain all adjustments, consisting of normal recurring accruals, necessary to present fairly the financial position, results of operations and cash flows for the periods presented. The preparation of financial statements in conformity with generally accepted accounting principles, requires management to make estimates and assumptions that affect the amounts reported in the financial statements and accompanying notes. Actual results could differ from these estimates. These interim financial statements should be read in conjunction with the financial statements and accompanying notes included in the annual report on Form 10-K for the year ended December 31, 2014 of PolyOne Corporation.
Accounting Standards Not Yet Adopted	Accounting Standards Not Yet Adopted
	In April 2015, the Financial Accounting Standards Board issued Auditing Standards Update 2015-03, "Interest-Imputation of Interest (Subtopic 835-30) - Simplifying the Presentation of Debt Issuance Costs" (ASU 2015-03), which requires unamortized debt issuance costs to be presented as a reduction of the corresponding debt liability rather than a separate asset. ASU 2015-03 will be adopted on the effective date for the Company, which is January 1, 2016.
	In May 2014, the Financial Accounting Standards Board issued Auditing Standards Update 2014-09, "Revenue from Contracts with Customers" (ASU 2014-09), which clarifies existing accounting literature relating to how and when a company recognizes revenue. Under ASU 2014-09, a company will recognize revenue when it transfers promised goods or services to customers in an amount that reflects the consideration to which the company expects to be entitled in exchange for those goods and services. ASU 2014-09 will be effective for the Company on January 1, 2017, with a possible one-year deferral as a result of a current proposal by the Financial Accounting Standards Board. The Company is in the process of determining what impact, if any, the adoption of ASU 2014-09 will have on its financial position, results of operations and cash flows.

Goodwill_And_Intangible_Assets1

Goodwill And Intangible Assets (Tables)	3 Months Ended
	Mar. 31, 2015
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill And Changes In Carrying Amount Of Goodwill By Operating Segment	Goodwill as of March 31, 2015 and December 31, 2014, and changes in the carrying amount of goodwill by segment were as follows:
	(In millions)	Global  Specialty			Global Color,			Designed Structures and Solutions			Performance		PolyOne		Total
		Engineered			Additives and						Products  and		Distribution
		Materials			Inks						Solutions
	Balance December 31, 2013	$	99.9		$	310.2		$	136.3		$	11	$	1.6	$	559
	Acquisitions of businesses	—			23.5			8.4			0.2		—		32.1
	Currency translation and other adjustments	(0.5		)	—			—			—		—		(0.5		)
	Balance December 31, 2014	99.4			333.7			144.7			11.2		1.6		590.6
	Acquisitions of businesses	—			1.9			—			—		—		1.9
	Currency translation and other adjustments	(0.7		)	(0.1		)	—			—		—		(0.8		)
	Balance March 31, 2015	$	98.7		$	335.5		$	144.7		$	11.2	$	1.6	$	591.7
Schedule of Finite-Lived Intangible Assets	Indefinite and finite-lived intangible assets consisted of the following:
		As of March 31, 2015
	(In millions)	Acquisition			Accumulated			Currency			Net
		Cost			Amortization			Translation
	Customer relationships	$	196.3		$	(34.9	)	$	—		$	161.4
	Patents, technology and other	132.9			(37.9		)	(0.3		)	94.7
	Indefinite-lived trade names	96.3			—			—			96.3
	In-process research and development	3.4			—			—			3.4
	Total	$	428.9		$	(72.8	)	$	(0.3	)	$	355.8
		As of December 31, 2014
	(In millions)	Acquisition			Accumulated			Currency			Net
		Cost			Amortization			Translation
	Customer relationships	$	198.1		$	(32.6	)	$	—		$	165.5
	Patents, technology and other	132.9			(35.3		)	(0.1		)	97.5
	Indefinite-lived trade names	96.3			—			—			96.3
	In-process research and development	3.4			—			—			3.4
	Total	$	430.7		$	(67.9	)	$	(0.1	)	$	362.7
Schedule of Indefinite-Lived Intangible Assets	Indefinite and finite-lived intangible assets consisted of the following:
		As of March 31, 2015
	(In millions)	Acquisition			Accumulated			Currency			Net
		Cost			Amortization			Translation
	Customer relationships	$	196.3		$	(34.9	)	$	—		$	161.4
	Patents, technology and other	132.9			(37.9		)	(0.3		)	94.7
	Indefinite-lived trade names	96.3			—			—			96.3
	In-process research and development	3.4			—			—			3.4
	Total	$	428.9		$	(72.8	)	$	(0.3	)	$	355.8
		As of December 31, 2014
	(In millions)	Acquisition			Accumulated			Currency			Net
		Cost			Amortization			Translation
	Customer relationships	$	198.1		$	(32.6	)	$	—		$	165.5
	Patents, technology and other	132.9			(35.3		)	(0.1		)	97.5
	Indefinite-lived trade names	96.3			—			—			96.3
	In-process research and development	3.4			—			—			3.4
	Total	$	430.7		$	(67.9	)	$	(0.1	)	$	362.7

Employee_Separation_and_Restru1

Employee Separation and Restructuring Costs Employee Separation and Restructuring Costs (Tables)	3 Months Ended
	Mar. 31, 2015
Restructuring and Related Activities [Abstract]
Schedule of Restructuring and Related Costs	The table below summarizes restructuring activity related to Spartech since the date of acquisition.
	(In millions)	Long-Lived Asset Charges			Employee Separation			Other Associated Costs			Total
	Accrual balance at December 31, 2013	$	—		$	15.1		$	—		$	15.1
	Charged to expense	27.3			5.1			27.3			59.7
	Cash payments	—			(17.5		)	(27.3		)	(44.8		)
	Non-cash utilization	(27.3		)	—			—			(27.3		)
	Accrual balance at December 31, 2014	$	—		$	2.7		$	—		$	2.7
	Charged to expense(1)	5.3			(0.3		)	4.3			9.3
	Cash payments	—			(1.6		)	(4.3		)	(5.9		)
	Non-cash utilization	(5.3		)	—			—			(5.3		)
	Accrual balance at March 31, 2015	$	—		$	0.8		$	—		$	0.8
	The table below summarizes restructuring activity related to Brazil since the date of these closures. We do not expect the remaining charges related to these actions to have a material impact to our financial statements going forward.
	(In millions)	Asset Charges			Employee Separation			Other Associated Costs			Total
	Accrual balance at December 31, 2013	$	—		$	—		$	—		$	—
	Charged to expense	10.7			2.9			3.4			17
	Cash payments	—			(1.8		)	(3.4		)	(5.2		)
	Non-cash utilization	(10.7		)	—			—			(10.7		)
	Accrual balance at December 31, 2014	$	—		$	1.1		$	—		$	1.1
	Charged to expense(1)	0.2			—			0.4			0.6
	Cash payments	—			(0.7		)	(0.4		)	(1.1		)
	Non-cash utilization	(0.2		)	—			—			(0.2		)
	Accrual balance at March 31, 2015	$	—		$	0.4		$	—		$	0.4

Inventories_Net_Tables

Inventories, Net (Tables)	3 Months Ended
	Mar. 31, 2015
Inventory, Net [Abstract]
Components Of Inventories	Components of Inventories, net are as follows:
	(In millions)	March 31, 2015		December 31, 2014
	Finished products	$	181	$	187.8
	Work in process	4.7		4.1
	Raw materials and supplies	112.2		117.1
	Inventories, net	$	297.9	$	309

Property_Net_Tables

Property, Net (Tables)	3 Months Ended
	Mar. 31, 2015
Property, Plant and Equipment [Abstract]
Components Of Property, Net	Components of Property, net are as follows:
	(In millions)	March 31, 2015			December 31, 2014
	Land	$	46.6		$	49.2
	Buildings	307			309.2
	Machinery and equipment	1,068.80			1,077.20
	Property, gross	1,422.40			1,435.60
	Less accumulated depreciation and amortization	(844.3		)	(838.9		)
	Property, net	$	578.1		$	596.7

WeightedAverage_Shares_Used_In1

Weighted-Average Shares Used In Computing Earnings Per Share (Tables)	3 Months Ended
	Mar. 31, 2015
Earnings Per Share [Abstract]
Schedule Of Weighted-Average Shares Used In Computing Earnings Per Share
		Three Months Ended March 31,
	(In millions)	2015	2014
	Weighted-average common shares outstanding – basic	89.2	94.5
	Plus dilutive impact of share-based compensation	0.9	1.2
	Weighted-average common shares – diluted	90.1	95.7

Employee_Benefit_Plans_Tables

Employee Benefit Plans (Tables)	3 Months Ended
	Mar. 31, 2015
Defined Benefit Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Components Of Net Period Benefit Costs	Components of defined benefit pension plan net periodic gains are as follows:
		Three Months Ended March 31,
	(In millions)	2015			2014
	Service cost	$	0.4		$	0.4
	Interest cost	5.3			6.3
	Expected return on plan assets	(8.2		)	(8.1		)
	Net periodic benefit gains	$	(2.5	)	$	(1.4	)
Postretirement Health Care Plan Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Components Of Net Period Benefit Costs	Components of post-retirement health care plan benefit costs are as follows:
		Three Months Ended March 31,
	(In millions)	2015			2014
	Interest cost	$	0.1		$	0.2
	Net periodic benefit costs	$	0.1		$	0.2

Financing_Arrangements_Tables

Financing Arrangements (Tables)	3 Months Ended
	Mar. 31, 2015
Debt Disclosure [Abstract]
Components Of Debt	Debt consists of the following instruments:
	(Dollars in millions)	31-Mar-15		31-Dec-14
	7.500% debentures due 2015	$	48.7	$	48.7
	Revolving credit facility due 2018	132.2		45
	7.375% senior notes due 2020	316.6		316.6
	5.250% senior notes due 2023	600		600
	Other debt	13.6		13.5
	Total long-term debt	1,111.10		1,023.80
	Less current portion	61.9		61.8
	Total long-term debt, net of current portion	$	1,049.20	$	962

Segment_Information_Tables

Segment Information (Tables)	3 Months Ended
	Mar. 31, 2015
Segment Reporting [Abstract]
Schedule Of Segment Information	Segment information for the three months ended March 31, 2015 and 2014 is as follows:
		Three Months Ended March 31, 2015								Three Months Ended March 31, 2014
	(In millions)	Sales to		Total			Operating			Sales to		Total Sales			Operating
		External		Sales			Income			External					Income
		Customers								Customers
	Global Color, Additives and Inks	$	206	$	208.5		$	33.8		$	215.5	$	219.6		$	30.4
	Global Specialty Engineered Materials	130.6		141.9			23.1			147		157.4			18.3
	Designed Structures and Solutions	118.7		119.1			3.2			173.5		173.6			11.2
	Performance Products and Solutions	155.7		175.9			11.5			185.3		207.6			16
	PolyOne Distribution	262.1		265.7			15.7			281		284.1			17.2
	Corporate and eliminations	—		(38.0		)	(17.2		)	—		(40.0		)	(36.7		)
	Total	$	873.1	$	873.1		$	70.1		$	1,002.30	$	1,002.30		$	56.4
		Total Assets
	(In millions)	March 31, 2015		December 31, 2014
	Global Color, Additives and Inks	$	941.8	$	937.7
	Global Specialty Engineered Materials	371.6		370.5
	Designed Structures and Solutions	477.2		490.2
	Performance Products and Solutions	267		265.5
	PolyOne Distribution	229.2		214.2
	Corporate and eliminations	402.1		433.1
	Total assets	$	2,688.90	$	2,711.20

Derivative_Instruments_Tables

Derivative Instruments (Tables)	3 Months Ended
	Mar. 31, 2015
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Fair Value Of Derivative Financial Instruments Recorded In Condensed Consolidated Balance Sheets	The fair value of derivative financial instruments recorded in the Condensed Consolidated Balance Sheets are as follows:
		March 31, 2015
	(In millions)	Notional		Other current assets
	Foreign currency forwards	$	39	$	0.2
		December 31, 2014
	(In millions)	Notional		Other current assets
	Foreign currency forwards	$	5.1	$	—
The effects of derivative instruments on our Condensed Consolidated Statements of Income	The effects of derivative instruments on our Condensed Consolidated Statements of Income are as follows:
		Three Months Ended March 31,
	(In millions)	2015		2014		Location
	Foreign currency forwards - gains (losses)	$	1	$	—	Other expense, net

Equity_Tables

Equity (Tables)	3 Months Ended
	Mar. 31, 2015
Equity [Abstract]
Schedule Of Changes In Equity	Changes in equity for the three months ended March 31, 2015 and March 31, 2014 are as follows:
	(In millions)	PolyOne			Noncontrolling			Total
		Shareholders'			Interests			Equity
		Equity
	Balance at December 31, 2014	$	776.3		$	0.9		$	777.2
	Net income	30.2			—			30.2
	Other comprehensive income
	Translation adjustments	(17.9		)	—			(17.9		)
	Total comprehensive income	12.3			—			12.3
	Cash dividend declared	(8.9		)	—			(8.9		)
	Repurchase of common shares	(19.6		)	—			(19.6		)
	Share-based incentive plan activity	(1.9		)	—			(1.9		)
	Balance at March 31, 2015	$	758.2		$	0.9		$	759.1
	Balance at December 31, 2013	$	976.8		$	1.7		$	978.5
	Net income	29.4			(0.2		)	29.2
	Other comprehensive income
	Translation adjustments	(0.7		)	—			(0.7		)
	Total comprehensive income	28.7			(0.2		)	28.5
	Cash dividend declared	(7.6		)	—			(7.6		)
	Repurchase of common shares	(51.0		)	—			(51.0		)
	Share-based incentive plan activity	0.7			—			0.7
	Balance at March 31, 2014	$	947.6		$	1.5		$	949.1
Schedule of Accumulated Other Comprehensive Income (Loss)	Changes in accumulated other comprehensive loss year-to-date as of March 31, 2015 and 2014 were as follows:
	(In millions)	Cumulative Translation Adjustment			Pension and Other Post-Retirement Benefits			Unrealized Gain in Available-for-Sale Securities			Total
	Balance at January 1, 2015	$	(47.7	)	$	5.2		$	0.2		$	(42.3	)
	Translation adjustments	(17.9		)	—			—			(17.9		)
	Balance at March 31, 2015	$	(65.6	)	$	5.2		$	0.2		$	(60.2	)
	Balance at January 1, 2014	$	(20.2	)	$	5.2		$	0.2		$	(14.8	)
	Translation adjustments	(0.7		)	—			—			(0.7		)
	Balance at March 31, 2014	$	(20.9	)	$	5.2		$	0.2		$	(15.5	)

Business_Combinations_Narrativ

Business Combinations Narrative (Details) (USD $)	0 Months Ended
In Millions, unless otherwise specified	Dec. 01, 2014	Mar. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Business Acquisition [Line Items]
Goodwill acquired		$591.70	$590.60	$559
Accella [Member]
Business Acquisition [Line Items]
Payments to acquire businesses net of cash acquired	47.2
Goodwill acquired	24.6
Intangible assets acquired	$16

Goodwill_And_Intangible_Assets2

Goodwill And Intangible Assets (Goodwill And Changes In Carrying Amount Of Goodwill By Operating Segment) (Details) (USD $)	3 Months Ended	12 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Goodwill [Roll Forward]
Balance, beginning of period	$590.60	$559
Acquisitions of businesses	1.9	32.1
Currency translation and other	-0.8	-0.5
Balance, end of period	591.7	590.6
Global Specialty Engineered Materials [Member]
Goodwill [Roll Forward]
Balance, beginning of period	99.4	99.9
Acquisitions of businesses	0	0
Currency translation and other	-0.7	-0.5
Balance, end of period	98.7	99.4
Global Color, Additives And Inks [Member]
Goodwill [Roll Forward]
Balance, beginning of period	333.7	310.2
Acquisitions of businesses	1.9	23.5
Currency translation and other	-0.1	0
Balance, end of period	335.5	333.7
Designed Structures and Solutions [Member]
Goodwill [Roll Forward]
Balance, beginning of period	144.7	136.3
Acquisitions of businesses	0	8.4
Currency translation and other	0	0
Balance, end of period	144.7	144.7
Performance Products And Solutions [Member]
Goodwill [Roll Forward]
Balance, beginning of period	11.2	11
Acquisitions of businesses	0	0.2
Currency translation and other	0	0
Balance, end of period	11.2	11.2
PolyOne Distribution [Member]
Goodwill [Roll Forward]
Balance, beginning of period	1.6	1.6
Acquisitions of businesses	0	0
Currency translation and other	0	0
Balance, end of period	$1.60	$1.60

Goodwill_And_Intangible_Assets3

Goodwill And Intangible Assets (Schedule Of Indefinite And Finite-Lived Intangible Assets) (Details) (USD $)	Mar. 31, 2015	Dec. 31, 2014
In Millions, unless otherwise specified
Indefinite And Finite-Lived Intangible Assets [Line Items]
Acquisition Cost	$428.90	$430.70
Accumulated Amortization	-72.8	-67.9
Currency Translation	-0.3	-0.1
Net	355.8	362.7
Customer Relationships [Member]
Indefinite And Finite-Lived Intangible Assets [Line Items]
Acquisition Cost	196.3	198.1
Accumulated Amortization	-34.9	-32.6
Currency Translation	0	0
Net	161.4	165.5
Patents, technology And other [Member]
Indefinite And Finite-Lived Intangible Assets [Line Items]
Acquisition Cost	132.9	132.9
Accumulated Amortization	-37.9	-35.3
Currency Translation	-0.3	-0.1
Net	94.7	97.5
Trade Names [Member]
Indefinite And Finite-Lived Intangible Assets [Line Items]
Acquisition Cost (indefinite lived)	96.3	96.3
In-process research and development [Member]
Indefinite And Finite-Lived Intangible Assets [Line Items]
Acquisition Cost (indefinite lived)	$3.40	$3.40

Employee_Separation_and_Restru2

Employee Separation and Restructuring Costs (Details) (USD $)	3 Months Ended			12 Months Ended	27 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2015		Mar. 31, 2014	Dec. 31, 2014	Mar. 31, 2015
Restructuring Reserve [Roll Forward]
Charged to expense	$10.60		$17.90
Spartech [Member]
Restructuring Reserve [Roll Forward]
Restructuring related costs, beginning balance	2.7		15.1	15.1
Charged to expense	9.3			59.7	113.1
Cash payments	-5.9			-44.8
Non-cash utilization	-5.3			-27.3
Restructuring related costs, ending balance	0.8			2.7	0.8
Spartech [Member] | Assets [Member]
Restructuring Reserve [Roll Forward]
Restructuring related costs, beginning balance	0		0	0
Charged to expense	5.3			27.3	46.2
Cash payments	0			0
Non-cash utilization	-5.3			-27.3
Restructuring related costs, ending balance	0			0	0
Spartech [Member] | Employee Severance [Member]
Restructuring Reserve [Roll Forward]
Restructuring related costs, beginning balance	2.7		15.1	15.1
Charged to expense	-0.3			5.1
Cash payments	-1.6			-17.5
Non-cash utilization	0			0
Restructuring related costs, ending balance	0.8			2.7	0.8
Spartech [Member] | Other Restructuring [Member]
Restructuring Reserve [Roll Forward]
Restructuring related costs, beginning balance	0		0	0
Charged to expense	4.3			27.3
Cash payments	-4.3			-27.3
Non-cash utilization	0			0
Restructuring related costs, ending balance	0			0	0
BRAZIL | Brazil Facility Closure [Member]
Restructuring Reserve [Roll Forward]
Restructuring related costs, beginning balance	1.1		0	0
Charged to expense	0.6	[1]		17
Cash payments	-1.1			-5.2
Non-cash utilization	-0.2			-10.7
Restructuring related costs, ending balance	0.4			1.1	0.4
BRAZIL | Brazil Facility Closure [Member] | Assets [Member]
Restructuring Reserve [Roll Forward]
Restructuring related costs, beginning balance	0		0	0
Charged to expense	0.2	[1]		10.7
Cash payments	0			0
Non-cash utilization	-0.2			-10.7
Restructuring related costs, ending balance	0			0	0
BRAZIL | Brazil Facility Closure [Member] | Employee Severance [Member]
Restructuring Reserve [Roll Forward]
Restructuring related costs, beginning balance	1.1		0	0
Charged to expense	0	[1]		2.9
Cash payments	-0.7			-1.8
Non-cash utilization	0			0
Restructuring related costs, ending balance	0.4			1.1	0.4
BRAZIL | Brazil Facility Closure [Member] | Other Restructuring [Member]
Restructuring Reserve [Roll Forward]
Restructuring related costs, beginning balance	0		0	0
Charged to expense	0.4	[1]		3.4
Cash payments	-0.4			-3.4
Non-cash utilization	0			0
Restructuring related costs, ending balance	$0			$0	$0
[1]	In addition to the restructuring charges for Spartech and the closure of our Brazil facilities, there was $0.7 million in additional employee separation and restructuring costs during the three months ended March 31, 2015, which are not reflected in the tables above.

Employee_Separation_and_Restru3

Employee Separation and Restructuring Costs Employee Separation and Restructuring Costs - Additional Information (Details) (USD $)	3 Months Ended		12 Months Ended		27 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2013	Dec. 31, 2014	Mar. 31, 2015
			facility
Restructuring Cost and Reserve [Line Items]
Charged to expense	$10.60	$17.90
Facility Closing [Member]
Restructuring Cost and Reserve [Line Items]
Number of facilities closed			7
Severance costs	0.7
Administrative Office Closing [Member]
Restructuring Cost and Reserve [Line Items]
Number of facilities closed			1
Cost of Sales [Member]
Restructuring Cost and Reserve [Line Items]
Charged to expense	7.9	11
Selling, General and Administrative Expenses [Member]
Restructuring Cost and Reserve [Line Items]
Charged to expense	2.7	6.9
Spartech [Member]
Restructuring Cost and Reserve [Line Items]
Charged to expense	9.3			59.7	113.1
Severance costs					25.9
Other associated restructuring costs					41
Expected future restructuring costs	6				6
Spartech [Member] | Assets [Member]
Restructuring Cost and Reserve [Line Items]
Charged to expense	5.3			27.3	46.2
Spartech Realignment [Member]
Restructuring Cost and Reserve [Line Items]
Charged to expense		$15.80

Inventories_Net_Components_Of_

Inventories, Net (Components Of Inventories) (Details) (USD $)	Mar. 31, 2015	Dec. 31, 2014
In Millions, unless otherwise specified
Inventory, Net [Abstract]
Finished products	$181	$187.80
Work in process	4.7	4.1
Raw materials and supplies	112.2	117.1
Inventories, net	$297.90	$309

Property_Net_Details

Property, Net (Details) (USD $)	Mar. 31, 2015	Dec. 31, 2014
In Millions, unless otherwise specified
Property, Plant and Equipment [Line Items]
Property, gross	$1,422.40	$1,435.60
Less accumulated depreciation and amortization	-844.3	-838.9
Property, net	578.1	596.7
Land and Land Improvements [Member]
Property, Plant and Equipment [Line Items]
Property, gross	46.6	49.2
Buildings [Member]
Property, Plant and Equipment [Line Items]
Property, gross	307	309.2
Machinery and Equipment [Member]
Property, Plant and Equipment [Line Items]
Property, gross	$1,068.80	$1,077.20

Income_Taxes_Details

Income Taxes (Details) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014
	item	item
Income Tax Contingency [Line Items]
Effective income tax rate	43.30%	26.80%
Increase in effective income tax rate	16.50%
Discrete items	2	1
Unfavorable effective tax rate impact percentage	8.60%
Favorable effective tax rate impact percentage		10.00%
Tax Year 2004 [Member]
Income Tax Contingency [Line Items]
Percentage benefit associated with 2004 tax return amendment	6.30%
Judicial Ruling [Member] | Foreign Tax Authority [Member]
Income Tax Contingency [Line Items]
Uncertain tax liability			$8.80
Charge recognized for remaining liability	7.9
Tax rate impacted by liability	14.90%

WeightedAverage_Shares_Used_In2

Weighted-Average Shares Used In Computing Earnings Per Share (Schedule Of Weighted-Average Shares Used In Computing Earnings Per Share) (Details)	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Earnings Per Share [Abstract]
Weighted-average common shares outstanding - basic (in shares)	89.2	94.5
Plus dilutive impact of share-based compensation (in shares)	0.9	1.2
Weighted-average common shares - diluted (in shares)	90.1	95.7

WeightedAverage_Shares_Used_In3

Weighted-Average Shares Used In Computing Earnings Per Share (Narrative) (Details)	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Earnings Per Share [Abstract]
Equity-based awards excluded (in shares)	0.1	0.2

Employee_Benefit_Plans_Compone

Employee Benefit Plans (Components Of Net Period Benefit Costs) (Details) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Defined Benefit Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	$0.40	$0.40
Interest cost	5.3	6.3
Expected return on plan assets	-8.2	-8.1
Net periodic benefit gains	-2.5	-1.4
Postretirement Health Care Plan Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Interest cost	0.1	0.2
Net periodic benefit gains	$0.10	$0.20

Financing_Arrangements_Compone

Financing Arrangements (Components Of Long-Term Debt) (Details) (USD $)	3 Months Ended	12 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Debt Instrument [Line Items]
Total long-term debt	$1,111.10	$1,023.80
Other debt	13.6	13.5
Less current portion	61.9	61.8
Total long-term debt, net of current portion	1,049.20	962
7.500% Debentures Due 2015 [Member] | Senior Notes [Member]
Debt Instrument [Line Items]
Total long-term debt	48.7	48.7
Interest rate of senior notes, debentures and medium-term notes.	7.50%	7.50%
Maturity date of debt instrument	15-Dec-15	15-Dec-15
Revolving Credit Facility Due 2018 [Member]
Debt Instrument [Line Items]
Total long-term debt	132.2	45
7.375% Senior Notes Due 2020 [Member] | Senior Notes [Member]
Debt Instrument [Line Items]
Total long-term debt	316.6	316.6
Interest rate of senior notes, debentures and medium-term notes.	7.38%	7.38%
Maturity date of debt instrument	15-Sep-20	15-Sep-20
5.250% Senior Notes Due 2023 [Member] | Senior Notes [Member]
Debt Instrument [Line Items]
Total long-term debt	$600	$600
Interest rate of senior notes, debentures and medium-term notes.	5.25%	5.25%
Maturity date of debt instrument	15-Mar-23	15-Mar-23

Financing_Arrangements_Narrati

Financing Arrangements (Narrative) (Details) (USD $)	3 Months Ended	12 Months Ended
	Mar. 31, 2015	Dec. 31, 2014
Debt Instrument [Line Items]
Amount of long-term debt	$1,111,100,000	$1,023,800,000
Contributions by employer	20,000,000
Fair value of debt instruments	1,148,400,000	1,045,400,000
Saudi Hollandi Bank [Member]
Debt Instrument [Line Items]
Amount outstanding	13,100,000
Line of credit interest rate	1.81%
SAIBOR [Member] | Saudi Hollandi Bank [Member]
Debt Instrument [Line Items]
Fixed rate on line of credit	0.85%
Saudi Hollandi Bank [Member] | Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Maximum borrowing facility size	16,000,000
Outstanding letters of credit	200,000
Revolving Credit Facility Due 2018 [Member]
Debt Instrument [Line Items]
Amount of long-term debt	132,200,000	45,000,000
Revolving Credit Facility Due 2018 [Member] | Canadian Line Of Credit [Member]
Debt Instrument [Line Items]
Canadian line of credit outstanding	0
Revolving Credit Facility Due 2018 [Member] | Various Banks [Member] | Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Maximum borrowing facility size	400,000,000
Potential maximum borrowing capacity	450,000,000
Facility weighted average interest rate	2.38%
Current borrowing availability	146,000,000
Increase in facility	87,200,000
Debentures Due December Two Thousand And Fifteen [Member] | Senior Notes [Member]
Debt Instrument [Line Items]
Interest rate of senior notes, debentures and medium-term notes.	7.50%	7.50%
Amount of long-term debt	48,700,000	48,700,000
Debt Instrument, Maturity Date	15-Dec-15	15-Dec-15
Senior Notes Due September Two Thousand And Twenty [Member] | Senior Notes [Member]
Debt Instrument [Line Items]
Interest rate of senior notes, debentures and medium-term notes.	7.38%	7.38%
Amount of long-term debt	316,600,000	316,600,000
Debt Instrument, Maturity Date	15-Sep-20	15-Sep-20
5.250% Senior Notes Due 2023 [Member] | Senior Notes [Member]
Debt Instrument [Line Items]
Interest rate of senior notes, debentures and medium-term notes.	5.25%	5.25%
Amount of long-term debt	$600,000,000	$600,000,000
Debt Instrument, Maturity Date	15-Mar-23	15-Mar-23

Segment_Information_Schedule_O

Segment Information (Schedule Of Segment Information) (Details) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014
Segment Reporting Information [Line Items]
Total	$873.10	$1,002.30
Operating Income	70.1	56.4
Total Assets	2,688.90		2,711.20
Global Color Additives And Inks [Member]
Segment Reporting Information [Line Items]
Sales to External Customers	206	215.5
Total Sales	208.5	219.6
Operating Income	33.8	30.4
Total Assets	941.8		937.7
Global Specialty Engineered Materials [Member]
Segment Reporting Information [Line Items]
Sales to External Customers	130.6	147
Total Sales	141.9	157.4
Operating Income	23.1	18.3
Total Assets	371.6		370.5
Designed Structures and Solutions [Member]
Segment Reporting Information [Line Items]
Sales to External Customers	118.7	173.5
Total Sales	119.1	173.6
Operating Income	3.2	11.2
Total Assets	477.2		490.2
Performance Products And Solutions [Member]
Segment Reporting Information [Line Items]
Sales to External Customers	155.7	185.3
Total Sales	175.9	207.6
Operating Income	11.5	16
Total Assets	267		265.5
PolyOne Distribution [Member]
Segment Reporting Information [Line Items]
Sales to External Customers	262.1	281
Total Sales	265.7	284.1
Operating Income	15.7	17.2
Total Assets	229.2		214.2
Intersegment Eliminations [Member]
Segment Reporting Information [Line Items]
Sales to External Customers	0	0
Total Sales	-38	-40
Operating Income	-17.2	-36.7
Total Assets	$402.10		$433.10

Commitments_And_Contingencies_

Commitments And Contingencies (Details) (USD $)	0 Months Ended	1 Months Ended	3 Months Ended		0 Months Ended
In Millions, unless otherwise specified	Mar. 13, 2013	Mar. 31, 2015	Mar. 31, 2015	Mar. 31, 2014	Feb. 28, 2011	Dec. 31, 2014
	company	entity
		party
Schedule of Equity Method Investments [Line Items]
Companies	70
Number of potentially responsible parties		10
Number of entities contributing little or no impact to lower passaic river		10
Expense related to environmental activities			$1.50	$0.90
Proceeds from insurance recoveries			0.5
Accrued probable future environmental expenditures		120.5	120.5			121.1
Sunbelt [Member]
Schedule of Equity Method Investments [Line Items]
Equity interest sold, percentage					50.00%
Consideration received on transaction					132.3
Guarantee assumed By acquirer		$18.30	$18.30

Derivative_Instruments_Fair_Va

Derivative Instruments (Fair Value Of Derivative Financial Instruments Recorded In Condensed Consolidated Balance Sheets) (Details) (Foreign currency forwards [Member], USD $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014
Derivatives, Fair Value [Line Items]
Notional	$39		$5.10
Other current assets	0.2		0
Other Expense Net [Member]
Derivatives, Fair Value [Line Items]
Foreign currency forwards - gains (losses)	$1	$0

Equity_Rollforward_Details

Equity Rollforward (Details) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Statement, Equity Component [Roll Forward]
PolyOne Shareholders' Equity, Balance at the beginning	$776.30
Noncontrolling Interests, Balance at the beginning	0.9
Total Equity, Balance at the beginning	777.2	978.5
PolyOne Shareholders' Equity, Net Income	30.2	29.4
Noncontrolling Interest, Net Income	0	-0.2
Total Equity, Net income	30.2	29.2
Translation adjustments	-17.9	-0.7
PolyOne Shareholders' Equity, Total comprehensive income	12.3	28.7
Noncontrolling Interests, Total comprehensive income	0	-0.2
Total comprehensive income	12.3	28.5
Cash dividend declared	-8.9	-7.6
Repurchase of common shares	-19.6	-51
Stock incentive plan activity	-1.9	0.7
PolyOne Shareholders' Equity, Balance at the ending	758.2
Noncontrolling Interests, Balance at the ending	0.9
Total Equity, Balance at the ending	759.1	949.1
PolyOne Shareholders' Equity [Member]
Statement, Equity Component [Roll Forward]
PolyOne Shareholders' Equity, Balance at the beginning	776.3	976.8
PolyOne Shareholders' Equity, Net Income		29.4
Translation adjustments	-17.9	-0.7
PolyOne Shareholders' Equity, Total comprehensive income	12.3	28.7
Cash dividend declared	-8.9	-7.6
Repurchase of common shares	-19.6	-51
Stock incentive plan activity	-1.9	0.7
PolyOne Shareholders' Equity, Balance at the ending	758.2	947.6
Noncontrolling Interests [Member]
Statement, Equity Component [Roll Forward]
Noncontrolling Interests, Balance at the beginning	0.9	1.7
Noncontrolling Interest, Net Income	0	-0.2
Translation adjustments	0	0
Noncontrolling Interests, Total comprehensive income	0	-0.2
Cash dividend declared	0	0
Repurchase of common shares	0	0
Stock incentive plan activity	0	0
Noncontrolling Interests, Balance at the ending	$0.90	$1.50

Rollforward_of_Accumulated_Oth

Rollforward of Accumulated Other Comprehensive Income (Loss) (Details) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Total, Balance at beginning of period	($42.30)	($14.80)
Translation adjustments	-17.9	-0.7
Total, Balance at end of period	-60.2	-15.5
Cumulative Translation Adjustment [Member]
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Total, Balance at beginning of period	-47.7	-20.2
Translation adjustments	-17.9	-0.7
Total, Balance at end of period	-65.6	-20.9
Pension and Other Post-Retirement Benefits [Member]
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Total, Balance at beginning of period	5.2	5.2
Translation adjustments	0	0
Total, Balance at end of period	5.2	5.2
Unrealized Gain in Available-for-Sale Securities [Member]
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Total, Balance at beginning of period	0.2	0.2
Translation adjustments	0	0
Total, Balance at end of period	$0.20	$0.20