Avient (AVNT) 10-K 13 Feb 14 2013 FY Annual report Financial data

Document_And_Entity_Informatio

Document And Entity Information (USD $)	12 Months Ended
	Dec. 31, 2013	Jan. 31, 2014	Jun. 28, 2013
Document And Entity Information [Abstract]	'	'	'
Entity Registrant Name	'POLYONE CORP	'	'
Entity Central Index Key	'0001122976	'	'
Document Type	'10-K	'	'
Document Period End Date	31-Dec-13	'	'
Amendment Flag	'false	'	'
Document Fiscal Year Focus	'2013	'	'
Document Fiscal Period Focus	'FY	'	'
Current Fiscal Year End Date	'--12-31	'	'
Entity Filer Category	'Large Accelerated Filer	'	'
Entity Current Reporting Status	'Yes	'	'
Entity Voluntary Filers	'No	'	'
Entity Well-known Seasoned Issuer	'Yes	'	'
Entity Public Float	'	'	$2,288,423,509
Entity Common Stock, Shares Outstanding	'	94,765,479	'

Consolidated_Statements_Of_Inc

Consolidated Statements Of Income (USD $)	12 Months Ended
In Millions, except Per Share data, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Income Statement [Abstract]	'	'	'
Sales	$3,771.20	$2,860.80	$2,709.40
Cost of sales	3,109	2,329.70	2,280.10
Gross margin	662.2	531.1	429.3
Selling and administrative expense	457.6	417	378.3
Income related to previously owned equity affiliates	26.9	23.4	152
Operating income	231.5	137.5	203
Interest expense, net	-63.5	-50.8	-33.7
Debt extinguishment costs	-15.8	0	-0.9
Other (expense) income, net	-1.2	-3.4	0.5
Income from continuing operations, before income taxes	151	83.3	168.9
Income tax expense	-58.1	-30.1	-15.5
Net income from continuing operations	92.9	53.2	153.4
Income from discontinued operations, net of income taxes	149.8	18.6	19.2
Net income	242.7	71.8	172.6
Net loss attributable to noncontrolling interests	1.1	0.1	0
Net income attributable to PolyOne common shareholders	$243.80	$71.90	$172.60
Earnings per share attributable to PolyOne common shareholders - basic:	'	'	'
Continuing operations	$0.98	$0.60	$1.66
Discontinued operations	$1.57	$0.21	$0.21
Total	$2.55	$0.81	$1.87
Continuing operations	$0.97	$0.59	$1.63
Discontinued operations	$1.56	$0.21	$0.21
Total	$2.53	$0.80	$1.84
Cash dividends declared per common share	$0.26	$0.20	$0.16
Weighted-average number of common shares outstanding:	'	'	'
Basic (in shares)	95.5	89.1	92.2
Diluted (in shares)	96.5	89.8	94.3

Consolidated_Statements_of_Com

Consolidated Statements of Comprehensive Income (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Statement of Comprehensive Income [Abstract]	'	'	'
Net income	$242.70	$71.80	$172.60
Other comprehensive loss:	'	'	'
Translation adjustments	-3.7	1.1	-9
Amortization of prior service credits, net of tax of $6.5 - 2012 and $6.5 - 2011	0	-10.9	-10.8
Total other comprehensive loss	-3.7	-9.8	-19.8
Total comprehensive income	239	62	152.8
Comprehensive loss attributable to noncontrolling interests	1.1	0.1	0
Comprehensive income attributable to PolyOne common shareholders	$240.10	$62.10	$152.80

Consolidated_Statements_of_Com1

Consolidated Statements of Comprehensive Income (parenthetical) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Statement of Comprehensive Income [Abstract]	'	'	'
Amortization of prior service costs tax	$0	$6.50	$6.50

Consolidated_Balance_Sheets

Consolidated Balance Sheets (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Millions, unless otherwise specified
Current assets:	'	'
Cash and cash equivalents	$365.20	$210
Accounts receivable, net	428	313.9
Inventories, net	342.5	244.4
Assets held-for-sale	0	39.3
Other current assets	117.9	81.1
Total current assets	1,253.60	888.7
Property, net	646.2	385.8
Goodwill	559	405.5
Intangible assets, net	365.8	340
Other non-current assets	119.5	108
Total assets	2,944.10	2,128
Current liabilities:	'	'
Short-term and current portion of long-term debt	12.7	3.8
Accounts payable	386.9	296.1
Liabilities held-for-sale	0	18
Accrued expenses and other liabilities	209.3	141.9
Total current liabilities	608.9	459.8
Long-term debt	976.2	703.1
Post-retirement benefits other than pensions	14.7	17
Pension benefits	62.6	182.8
Deferred income taxes	133.8	31.8
Other non-current liabilities	169.4	102.1
Total non-current liabilities	1,356.70	1,036.80
Shareholders’ equity	'	'
Preferred stock, 40.0 shares authorized, no shares issued	0	0
Common Shares, $0.01 par, 400.0 shares authorized, 122.2 shares issued	1.2	1.2
Additional paid-in capital	1,149.80	1,016.10
Retained earnings (deficit)	211.6	-13
Common shares held in treasury, at cost, 27.1 shares in 2013 and 32.7 shares in 2012	-371	-364.1
Accumulated other comprehensive loss	-14.8	-11.1
Total PolyOne shareholders' equity	976.8	629.1
Noncontrolling interest	1.7	2.3
Total equity	978.5	631.4
Total liabilities and equity	$2,944.10	$2,128

Consolidated_Balance_Sheets_Pa

Consolidated Balance Sheets (Parenthetical) (USD $)	Dec. 31, 2013	Dec. 31, 2012
Statement of Financial Position [Abstract]	'	'
Preferred stock, authorized	40,000,000	40,000,000
Preferred stock, issued	0	0
Common stock, par value	$0.01	$0.01
Common stock, authorized	400,000,000	400,000,000
Common stock, issued	122,200,000	122,200,000
Treasury stock, shares	27,100,000	32,700,000

Consolidated_Statements_Of_Cas

Consolidated Statements Of Cash Flows (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Operating activities	'	'	'
Net income	$242.70	$71.80	$172.60
Adjustments to reconcile net income to net cash provided by operating activities:	'	'	'
Depreciation and amortization	109.8	69.8	57.5
Deferred income tax provision	12.9	13.4	3.6
Debt extinguishment costs	15.8	0	0.9
Provision for doubtful accounts	0.2	0.3	2
Stock compensation expense	16.5	10.4	5.4
Gain on sale of Business	-223.7	0	0
Income related to previously owned equity affiliates	-26.9	-23.4	-152
Changes in assets and liabilities, net of the effect of acquisitions and divestitures:	'	'	'
Decrease in accounts receivable	26.9	1.2	7.3
Decrease (increase) in inventories	20.4	-3	8
(Decrease) increase in accounts payable	-16.6	16.8	11.2
(Decrease) increase in pension and other post-retirement benefits	-124.5	-41.7	30.2
Increase (decrease) in accrued expenses and other assets and liabilities	55.5	-8.7	-74.2
Net cash provided by operating activities	109	106.9	72.5
Investing activities	'	'	'
Capital expenditures	-76.4	-57.4	-54.1
Business acquisitions, net of cash acquired	-259.4	-33.8	-508.4
Proceeds from sale of businesses and other assets	275.7	18.9	140
Net cash used by investing activities	-60.1	-72.3	-422.5
Financing activities	'	'	'
Repayments of Long-term Debt	-343.3	-3	-42.9
Premium on early extinguishment of long-term debt	-4.6	0	-0.9
Proceeds from Long-term Debt	600	0	297
Debt financing Costs	-13	0	-11.5
Borrowings under credit facilities	129	0.8	0
Repayments under credit facilities	-117.5	0	0
Purchase of common shares for treasury	-131.6	-15.9	-73.6
Exercise of stock awards	7.3	15.1	6.9
Cash dividends paid	-21.5	-16.9	-11.1
Proceeds from noncontrolling interests	0	2.4	0
Net cash provided (used) by financing activities	104.8	-17.5	163.9
Effect of exchange rate changes on cash	1.5	1	-0.1
Increase (decrease) in cash and cash equivalents	155.2	18.1	-186.2
Cash and cash equivalents at beginning of year	210	191.9	378.1
Cash and cash equivalents at end of year	$365.20	$210	$191.90

Consolidated_Statements_Of_Sha

Consolidated Statements Of Shareholders' Equity (USD $)	Total	Total PolyOne shareholders' equity	Common Shares	Common Shares Held in Treasury	Additional Paid-in Capital	Retained Earnings (Deficit)	Accumulated Other Comprehensive Income (Loss)	Non-controlling Interests	Total equity
In Millions, unless otherwise specified
Balance at beginning of period at Dec. 31, 2010	'	$516	$1.20	($305.60)	$1,059.40	($257.50)	$18.50	'	$516
Balance at beginning of period, shares at Dec. 31, 2010	'	'	122.2	'	'	'	'	'	'
Balance at beginning of period, treasury shares at Dec. 31, 2010	'	'	'	-28.3	'	'	'	'	'
Increase (Decrease) in Stockholders' Equity [Roll Forward]	'	'	'	'	'	'	'	'	'
Net income	172.6	172.6	'	'	'	172.6	'	'	172.6
Other comprehensive income	-19.8	-19.8	'	'	'	'	-19.8	'	-19.8
Cash dividends declared	'	-14.6	'	'	-14.6	'	'	'	-14.6
Repurchase of common shares	'	-73.6	'	-73.6	'	'	'	'	-73.6
Repurchase of common shares, shares	'	'	'	-6	'	'	'	'	'
Stock-based compensation and exercise of awards	'	7.7	'	9.8	-2.1	'	'	'	7.7
Stock-based compensation and exercise of awards, shares	'	'	'	0.9	'	'	'	'	'
Balance at end of period at Dec. 31, 2011	'	588.3	1.2	-369.4	1,042.70	-84.9	-1.3	0	588.3
Balance at end of period, shares at Dec. 31, 2011	'	'	122.2	'	'	'	'	'	'
Balance at end of period, treasury shares at Dec. 31, 2011	'	'	'	-33.4	'	'	'	'	'
Increase (Decrease) in Stockholders' Equity [Roll Forward]	'	'	'	'	'	'	'	'	'
Net income	71.8	71.9	'	'	'	71.9	'	-0.1	71.8
Other comprehensive income	-9.8	-9.8	'	'	'	'	-9.8	'	-9.8
Noncontrolling interest activity	'	'	'	'	'	'	'	2.4	2.4
Cash dividends declared	'	-17.8	'	'	-17.8	'	'	'	-17.8
Repurchase of common shares	'	-15.9	'	-15.9	'	'	'	'	-15.9
Repurchase of common shares, shares	'	'	'	-1.2	'	'	'	'	'
Stock-based compensation and exercise of awards	'	12.4	'	21.2	-8.8	'	'	'	12.4
Stock-based compensation and exercise of awards, shares	'	'	'	1.9	'	'	'	'	'
Balance at end of period at Dec. 31, 2012	631.4	629.1	1.2	-364.1	1,016.10	-13	-11.1	2.3	631.4
Balance at end of period, shares at Dec. 31, 2012	'	'	122.2	'	'	'	'	'	'
Balance at end of period, treasury shares at Dec. 31, 2012	-32.7	'	'	32.7	'	'	'	'	'
Increase (Decrease) in Stockholders' Equity [Roll Forward]	'	'	'	'	'	'	'	'	'
Net income	242.7	243.8	'	'	'	243.8	'	-1.1	242.7
Other comprehensive income	-3.7	-3.7	'	'	'	'	-3.7	'	-3.7
Noncontrolling interest activity	'	'	'	'	'	'	'	0.5	0.5
Shares issued in connection with acquisitions	'	'	'	10	'	'	'	'	'
Adjustments to Additional Paid in Capital, Stock Issued, Issuance Costs	'	'	'	'	136.6	'	'	'	'
Stock Issued During Period, Value, Treasury Stock Reissued	'	'	'	117.2	'	'	'	'	'
Stock Issued During Period, Value, Acquisitions	'	253.8	'	'	'	'	'	'	253.8
Cash dividends declared	'	-24.6	'	'	-5.4	19.2	'	'	-24.6
Repurchase of common shares	'	-131.6	'	-131.6	'	'	'	'	-131.6
Repurchase of common shares, shares	'	'	'	-5	'	'	'	'	'
Stock-based compensation and exercise of awards	'	10	'	7.5	2.5	'	'	'	10
Stock-based compensation and exercise of awards, shares	'	'	'	0.6	'	'	'	'	'
Balance at end of period at Dec. 31, 2013	$978.50	$976.80	$1.20	($371)	$1,149.80	$211.60	($14.80)	$1.70	$978.50
Balance at end of period, shares at Dec. 31, 2013	'	'	122.2	'	'	'	'	'	'
Balance at end of period, treasury shares at Dec. 31, 2013	-27.1	'	'	-27.1	'	'	'	'	'

Description_Of_Business_And_Su

Description Of Business And Summary Of Significant Accounting Policies	12 Months Ended
	Dec. 31, 2013
Organization, Consolidation and Presentation of Financial Statements [Abstract]	'
Description Of Business And Summary Of Significant Accounting Policies	'
	Description of Business
	We are a premier provider of specialized polymer materials, services and solutions with operations in specialty polymer formulations, color and additive systems, plastic sheet and packaging solutions, and polymer distribution. We are also a highly specialized developer and manufacturer of performance enhancing additives, liquid colorants, and fluoropolymer and silicone colorants. Headquartered in Avon Lake, Ohio, we have employees at manufacturing sites and distribution facilities in North America, South America, Europe and Asia. We provide value to our customers through our ability to link our knowledge of polymers and formulation technology with our manufacturing and supply chain to provide value added solutions to designers, assemblers and processors of plastics (our customers). When used in this Annual Report on Form 10-K, the terms “we,” “us,” “our” and the “Company” mean PolyOne Corporation and its consolidated subsidiaries.
	Our operations are located primarily in the United States, Canada, Mexico, Europe, Asia and Brazil. Our operations are reported in five reportable segments: Global Specialty Engineered Materials; Global Color, Additives and Inks; Designed Structures and Solutions; Performance Products and Solutions; and PolyOne Distribution. See Note 16, Segment Information, for more information.
	On March 13, 2013, PolyOne acquired Spartech Corporation (Spartech), a supplier of sustainable plastic sheet, color and engineered materials, and packaging solutions, based in Clayton, Missouri. The Spartech acquisition expands PolyOne's specialty portfolio with adjacent technologies in attractive end markets where we already participate, as well as new end markets such as aerospace and security. By combining Spartech's leading market positions in sheet, rigid barrier, packaging and specialty cast acrylics with PolyOne's capabilities, we believe we can better serve our customers and accelerate growth.
	On March 25, 2013, PolyOne entered into an agreement to sell its vinyl dispersion, blending and suspension resin assets (Resin Business) to Mexichem Specialty Resins Inc. (Mexichem), a wholly-owned subsidiary of Mexichem, S.A.B. de C.V., for $250.0 million cash consideration. The sale of the Resin Business occurred on May 30, 2013 which resulted in the recognition of a pre-tax gain of $223.7 million ($138.5 million, net of tax), which is reflected within the Income from discontinued operations, net of income taxes line of the Consolidated Statements of Income.
	Consolidation and Basis of Presentation
	The consolidated financial statements include the accounts of PolyOne and its subsidiaries. All majority-owned affiliates over which we have control are consolidated. Investments in affiliates and joint ventures in which our ownership is 50% or less, or in which we do not have control but have the ability to exercise significant influence over operating and financial policies, were accounted for under the equity method prior to their disposition (see Note 20, Financial Information of Previously Owned Equity Affiliates). Transactions with related parties, including joint ventures, are in the ordinary course of business.
	Reclassifications
	Certain reclassifications of the prior period amounts and presentation have been made to conform to the presentation for the current period.
	Use of Estimates
	Preparation of financial statements in conformity with accounting principles generally accepted in the United States requires management to make estimates and assumptions in certain circumstances that affect amounts reported in the accompanying consolidated financial statements and notes. Actual results could differ from these estimates.
	Cash and Cash Equivalents
	We consider all highly liquid investments purchased with a maturity of less than three months to be cash equivalents. Cash equivalents are stated at cost, which approximates fair value.
	Allowance for Doubtful Accounts
	We evaluate the collectability of receivables based on a combination of factors. We regularly analyze significant customer accounts and, when we become aware of a specific customer’s inability to meet its financial obligations to us, such as in the case of a bankruptcy filing or deterioration in the customer’s operating results or financial position, we record a specific allowance for bad debt to reduce the related receivable to the amount we reasonably believe is collectible. We also record bad debt allowances for all other customers based on a variety of factors including the length of time the receivables are past due, the financial health of the customer, economic conditions and historical experience. In estimating the allowances, we take into consideration the existence of credit insurance. If circumstances related to specific customers change, our estimates of the recoverability of receivables could be adjusted further. Accounts receivable balances are written off against the allowance for doubtful accounts after a final determination of uncollectability has been made.
	Inventories
	Inventories are stated at the lower of cost or market using the first-in, first-out (FIFO) method.
	Long-lived Assets
	Property, plant and equipment is carried at cost, net of depreciation and amortization that is computed using the straight-line method over the estimated useful lives of the assets, which ranges from 3 to 15 years for machinery and equipment and up to 40 years for buildings. Computer software is amortized over periods not exceeding 10 years. Property, plant and equipment is generally depreciated on accelerated methods for income tax purposes. We expense repair and maintenance costs as incurred. We capitalize replacements and betterments that increase the estimated useful life of an asset.
	We retain fully depreciated assets in property and accumulated depreciation accounts until we remove them from service. In the case of sale, retirement or disposal, the asset cost and related accumulated depreciation balance is removed from the respective account, and the resulting net amount, less any proceeds, is included as a component of income from continuing operations in the accompanying Consolidated Statements of Income.
	We account for operating leases under the provisions of Financial Accounting Standards Board (FASB) Accounting Standards Codification (ASC) Topic 840, Leases.
	Finite-lived intangible assets, which consist primarily of customer relationships, sales contracts, patents and technology are amortized over their estimated useful lives. The remaining useful lives range up to 23 years.
	We assess the recoverability of long-lived assets when events or changes in circumstances indicate that we may not be able to recover the assets’ carrying amount. We measure the recoverability of assets to be held and used by a comparison of the carrying amount of the asset to the expected future undiscounted cash flows associated with the asset. We measure the amount of impairment of long-lived assets as the amount by which the carrying value of the asset exceeds the fair value of the asset, which is generally determined based on projected discounted future cash flows or appraised values.
	Goodwill and Indefinite Lived Intangible Assets
	Goodwill is the excess of the purchase price paid over the fair value of the net assets of the acquired business. Goodwill is tested for impairment at the reporting unit level. Our reporting units have been identified at the operating segment level, or in some cases, one level below the operating segment level. Goodwill is allocated to the reporting units based on the estimated fair value at the date of acquisition.
	Our annual measurement date for testing impairment of goodwill and other indefinite-lived intangibles is October 1st. We completed our testing of impairment as of October 1, noting no impairment in 2013, 2012 or 2011. The future occurrence of a potential indicator of impairment would require an interim assessment for some or all of the reporting units prior to the next required annual assessment on October 1, 2014. Refer to Note 19, Fair Value, for further discussion of our approach for assessing the fair value of goodwill.
	Litigation Reserves
	FASB ASC Topic 450, Contingencies, requires that we accrue for loss contingencies associated with outstanding litigation, claims and assessments for which management has determined it is probable that a loss contingency exists and the amount of loss can be reasonably estimated. We record expense associated with professional fees related to litigation claims and assessments as incurred. Refer to Note 13, Commitments and Contingencies information.
	Derivative Financial Instruments
	FASB ASC Topic 815, Derivative and Hedging, requires that all derivative financial instruments, such as foreign exchange contracts, be recognized in the financial statements and measured at fair value, regardless of the purpose or intent in holding them.
	We are exposed to foreign currency changes in the normal course of business. We have established policies and procedures that manage this exposure through the use of financial instruments. By policy, we do not enter into these instruments for trading purposes or speculation. These instruments are not designated as hedges and, as a result, are adjusted to fair value, with the resulting gains and losses recognized in the accompanying Consolidated Statements of Income immediately.
	Pension and Other Post-retirement Plans
	We account for our pensions and other post-retirement benefits in accordance with FASB ASC Topic 715, Compensation — Retirement Benefits. This standard requires us to (1) recognize the funded status of the benefit plans in our Consolidated Balance Sheet, (2) recognize, as a component of other comprehensive income or net periodic benefit cost, the gains or losses and prior service costs or credits that arise during the period and (3) measure defined benefit plan assets and obligations as of December 31. We immediately recognize actuarial gains and losses, after consideration of inventory capitalization, in our operating results in the year in which the gains or losses occur. Refer to Note 12, Employee Benefit Plans, for more information.
	Accumulated Other Comprehensive Loss
	Changes in accumulated other comprehensive loss in 2013, 2012 and 2011 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, 2011	$	(8.6	)	$	26.9		$	0.2	$	18.5
	Translation adjustments	(9.0		)	—			—		(9.0		)
	Prior service credits recognized during the year, net of tax of $6.5	—			(10.8		)	—		(10.8		)
	Balance at December 31, 2011	(17.6		)	16.1			0.2		(1.3		)
	Translation adjustments	1.1			—			—		1.1
	Prior service credits recognized during the year, net of tax of $6.5	—			(10.9		)	—		(10.9		)
	Balance at December 31, 2012	(16.5		)	5.2			0.2		(11.1		)
	Translation adjustments	(3.7		)	—			—		(3.7		)
	Balance at December 31, 2013	$	(20.2	)	$	5.2		$	0.2	$	(14.8	)
	Fair Value of Financial Instruments
	FASB ASC Topic 820, Fair Value Measurements and Disclosures, requires disclosures of the fair value of financial instruments. The estimated fair values of financial instruments were principally based on market prices where such prices were available and, where unavailable, fair values were estimated based on market prices of similar instruments. See Note 19, Fair Value, for further discussion.
	Foreign Currency Translation
	Revenues and expenses are translated at average currency exchange rates during the related period. Assets and liabilities of foreign subsidiaries are translated using the exchange rate at the end of the period. The resulting translation adjustments are recorded as accumulated other comprehensive income or loss. Gains and losses resulting from foreign currency transactions, including intercompany transactions that are not considered permanent investments, are included in Other (expense) income, net in the accompanying Consolidated Statements of Income.
	Revenue Recognition
	We recognize revenue when the revenue is realized or realizable and has been earned. We recognize revenue when a firm sales agreement is in place, shipment has occurred and collectability is reasonably assured.
	Shipping and Handling Costs
	Shipping and handling costs are included in cost of sales.
	Research and Development Expense
	Research and development costs from continuing operations, which were $52.6 million in 2013, $41.3 million in 2012 and $36.4 million in 2011, are charged to expense as incurred.
	Environmental Costs
	We expense costs that are associated with managing hazardous substances and pollution in ongoing operations on a current basis. Costs associated with environmental contamination are accrued when it becomes probable that a liability has been incurred and our proportionate share of the cost can be reasonably estimated. Any such provision is recognized using the Company's best estimate of the amount of loss incurred, or at the lower end of an estimated range, when a single best estimate is not determinable. In some cases, the Company may be able to recover a portion of the costs relating to these obligations from insurers or other third parties; however, the Company records such amounts only when it is probable that they will be collected.
	Equity Affiliates
	We account for our investments in equity affiliates under FASB ASC Topic 323, Investments — Equity Method and Joint Ventures. We recognize our proportionate share of the income of equity affiliates.
	Share-Based Compensation
	We account for share-based compensation under the provisions of FASB ASC Topic 718, Compensation — Stock Compensation, which requires us to estimate the fair value of share-based awards on the date of grant. The value of the portion of the award that is ultimately expected to vest is recognized as expense over the requisite service periods in the accompanying Consolidated Statements of Income. As of December 31, 2013, we had one active share-based employee compensation plan, which is described more fully in Note 15, Share-Based Compensation.
	Income Taxes
	Deferred income tax liabilities and assets are determined based upon the differences between the financial reporting and tax basis of assets and liabilities and are measured using the tax rate and laws currently in effect. In accordance with FASB ASC Topic 740, Income Taxes, we evaluate our deferred income taxes to determine whether a valuation allowance should be established against the deferred tax assets or whether the valuation allowance should be reduced based on consideration of all available evidence, both positive and negative, using a “more likely than not” standard.

Business_Combinations

Business Combinations	12 Months Ended
	Dec. 31, 2013
Business Combinations [Abstract]	'
Business Combinations	'
	Note 2 — BUSINESS COMBINATIONS
	Spartech Corporation
	On March 13, 2013, PolyOne acquired Spartech, a supplier of sustainable plastic sheet, color and engineered materials, and packaging solutions, based in Clayton, Missouri, with fiscal 2012 sales of $1,149.4 million and net income from continuing operations of $2.7 million.
	At the effective time of the merger, each issued and outstanding share of Spartech common stock was canceled and converted into the right to receive consideration equal to $2.67 in cash and 0.3167 shares of PolyOne common stock. PolyOne paid $83.4 million in cash and issued approximately 10.0 million shares of its common stock to Spartech's stockholders. PolyOne funded the cash portion of the consideration, and the repayment of certain portions of Spartech's debt, with a portion of the net proceeds of its issuance of 5.25% senior notes due 2023, discussed in Note 6, Financing Arrangements.
	PolyOne's management believes that the acquisition of Spartech will provide substantial synergies through enhanced operational cost efficiencies and will expand PolyOne's specialty portfolio. By combining Spartech's leading market positions in sheet, rigid barrier packaging and specialty cast acrylics with PolyOne's capabilities, we believe that we can better serve our customers and accelerate growth.
	Spartech's results have been reflected within our Consolidated Statements of Income and within our newly created segment Designed Structures and Solutions, as well as our existing Global Specialty Engineered Materials, Global Color, Additives and Inks and Performance Products and Solutions segments since the date of acquisition. Sales of former Spartech businesses were $822.7 million since the date of acquisition.
	Based on the closing price of PolyOne's common stock on March 13, 2013, the purchase price was comprised of the following:
	(In millions, except stock price and share data)
	Spartech shares outstanding	31.2
	Spartech restricted stock units	0.2
	Spartech shares converted	31.4
	Exchange ratio	0.3167
	PolyOne shares issued	10
	PolyOne closing stock price on March 13, 2013	$	25.05
	Total value of PolyOne shares issued	$	249.9
	Cash consideration transferred to Spartech shareholders	83.4
	Fair value of Spartech equity awards, net of deferred tax benefits (1)	2.4
	Total consideration transferred to Spartech equity holders	335.7
	Spartech revolving credit facilities repaid at close (2)	77.2
	Spartech senior notes repaid at close (2)	102.3
	Total consideration transferred to debt and equity holders	515.2
	Cash acquired	(4.1		)
	Total consideration transferred to debt and equity holders, net of cash acquired	$	511.1
	(1) In accordance with ASC 718, Compensation — Stock Compensation, the fair value of replacement awards attributable to pre-combination service is recognized as part of purchase consideration. The $2.4 million represents the fair value of Spartech replacement equity awards of $3.9 million net of deferred income tax benefits of $1.5 million. The fair value of awards attributable to post-combination service amounted to $2.7 million and are being recognized as stock compensation over their requisite service periods within PolyOne's Consolidated Statements of Income.
	(2) In accordance with the provisions of Spartech's 7.08% senior notes due 2016 and revolving credit facilities, at the time of closing, PolyOne repaid all borrowings under Spartech's revolving credit facilities, which amounted to $77.2 million. Additionally, PolyOne repaid $102.3 million related to Spartech's 7.08% senior notes due 2016, including $88.9 million of aggregated principal, $10.3 million make-whole provisions, and $3.1 million of interest payable.
	The acquisition of Spartech has been accounted for using the acquisition method of accounting, which requires, among other things, the assets acquired and liabilities assumed be recognized at their respective fair values as of the acquisition date. As of December 31, 2013, the purchase price allocation remains preliminary, primarily related to our completion of our assessment of contingencies and income taxes.
	The following table summarizes PolyOne's preliminary fair value estimates at the acquisition date as of December 31, 2013:
	(In millions)	Preliminary allocation
	Accounts receivable, net	$	139.7
	Inventories, net	118.1
	Other current assets	17.2
	Property, net	280.3
	Other non-current assets	20.4
	Intangible assets, net	44.6
	Goodwill	153.2
	Total assets acquired	773.5
	Short-term and current portion of long-term debt	0.5
	Accounts payable	105.3
	Accrued expenses	43.2
	Long-term debt	11
	Other non-current liabilities	102.4
	Total liabilities assumed	262.4
	Net assets acquired	$	511.1
	Goodwill is calculated as the excess of the consideration transferred over the assets acquired, and represents the estimated future economic benefits arising from other assets acquired that could not be individually identified and separately recognized. Goodwill has been allocated to the Designed Structures and Solutions, Global Color, Additives and Inks and Performance Products and Solutions segments. Goodwill recognized as a result of this acquisition is not deductible for tax purposes. See Note 5, Goodwill and Intangible Assets for information about goodwill and intangible assets.
	The following unaudited pro forma information of PolyOne for the years ended December 31, 2013 and 2012 includes Spartech's operating results for the respective periods, as if the acquisition and related financing occurred on January 1, 2012. The following pro forma financial information is not necessarily indicative of the results of operations as they would have been had the transaction occurred on the assumed date, nor is it necessarily an indication of trends in future results for a number of reasons, including, but not limited to, differences between the assumptions used to prepare the pro forma information, cost savings from operating efficiencies, potential synergies, and the impact of incremental costs incurred in integrating the businesses.
		Year Ended December 31,
	(In millions)	Pro Forma 2013			Pro Forma 2012
	Sales	$	3,989.20		$	4,006.90
	Net income from continuing operations	$	94.7		$	56.5
	The unaudited pro forma financial information presented in the table above has been adjusted to give effect to adjustments that are: (1) directly related to the business combination; (2) factually supportable; and (3) expected to have a continuing impact. These adjustments include, but are not limited to, depreciation and amortization related to fair value adjustments to property, plant and equipment and intangible assets, and interest expense on acquisition-related debt.
	In 2013, we incurred acquisition-related costs totaling of $7.6 million which have been included within selling and administrative expense in our Consolidated Statements of Income.
	Glasforms Incorporated
	On December 19, 2012, PolyOne acquired all of the outstanding equity of Glasforms Inc. (Glasforms), a leading manufacturer of glass and carbon fiber reinforced polymers and advanced composite products, with 2012 annual sales of $51.1 million. The purchase marks PolyOne's entry into advanced composite technology, an adjacency consistent with the Company's strategy of providing specialty solutions that deliver high value to customers. The acquisition date fair value of the consideration transferred was $34.3 million, net of cash acquired of $1.2 million. Glasforms results have been reflected within our Consolidated Statement of Income and within our Global Specialty Engineered Materials Segment since the date of acquisition. The acquisition resulted in goodwill of $12.4 million and $10.7 million of identifiable intangible assets.
	In 2012, we incurred acquisition-related costs totaling of $3.9 million which have been included within Selling and administrative expense in our Consolidated Statement of Income.
	ColorMatrix Group Incorporated
	On December 21, 2011, PolyOne, pursuant to the terms of an Agreement and Plan of Merger (Merger Agreement) with ColorMatrix Group, Inc. and Audax ColorMatrix Holdings, LLC, acquired all of the equity of ColorMatrix Group, Inc. (ColorMatrix). ColorMatrix is a developer and manufacturer of performance enhancing, additives for plastic products, liquid colorants, and fluoropolymer and silicone colorants, and operates globally with research and development and production facilities in North America, South America, Europe, Asia and Africa. This acquisition reflects our strategy to expand our specialty business and our international presence.
	The acquisition date fair value of the consideration transferred, which consisted solely of cash, was $486.1 million, net of cash acquired of $1.9 million and no assumed debt. PolyOne funded the purchase price with a combination of cash on hand and net proceeds of $285.5 million from our senior secured term loan, discussed in Note 6, Financing Arrangements. In 2011, we incurred approximately $3.3 million of acquisition costs related to this acquisition, which are included within Selling and administrative expense in our Consolidated Statements of Income.
	Other Acquisitions and Joint Ventures
	On October 6, 2011, we entered into an agreement with E.A. Juffali & Brothers Company Limited to form a joint venture that will enable PolyOne to expand its Global Color and Additives business into the Middle East. This joint venture is 51% owned by PolyOne and is based in Jeddah, Saudi Arabia. During 2012, funding of this joint venture occurred and construction of the manufacturing facility began. Operations commenced in 2013. The joint venture is reflected within our consolidated financial statements, including the noncontrolling interest.

Discontinued_Operations_Notes

Discontinued Operations (Notes)	12 Months Ended
	Dec. 31, 2013
Discontinued Operations and Disposal Groups [Abstract]	'
Discontinued Operations	'
	DISCONTINUED OPERATIONS
	On May 30, 2013, PolyOne sold its Resin Business to Mexichem for $250.0 million cash consideration. This sale resulted in the recognition of a pre-tax gain of $223.7 million ($138.5 million, net of tax) in the second quarter of 2013.
	PolyOne has classified the Resin Business assets and liabilities as held-for-sale for periods prior to disposition in the accompanying Consolidated Balance Sheets and has classified the Resin Business operating results as a discontinued operation in the accompanying Consolidated Statements of Income for all periods presented. Previously, the Resin Business was included in the Performance Products and Solutions segment.
	The Resin Business' sales, income before income taxes and net income were as follows:
		Year Ended December 31,
	(In millions)	2013*			2012			2011
	Sales	$	55.3		$	131.8		$	154.1
	Gain on sale	$	223.7		$	—		$	—
	Income from operations	12.2			29.7			29.8
	Income before taxes	235.9			29.7			29.8
	Income tax expense	(86.1		)	(11.1		)	(10.6		)
	Income from discontinued operations, net of income taxes	$	149.8		$	18.6		$	19.2
	* Includes the Resin Business' operating results through May 29, 2013.
	The following table summarizes the assets and liabilities of the Resin Business:
	(In millions)		December 31,
	Assets:		2012
	Accounts receivable, net		$	8.8
	Inventories, net		8.2
	Property, net		21.7
	Other assets		0.6
	Assets held-for-sale		39.3
	Liabilities:
	Accounts payable		15.8
	Accrued expenses and other liabilities		2.2
	Liabilities held-for-sale		$	18

Employee_Separation_and_Plant_

Employee Separation and Plant Phase-Out Costs	12 Months Ended
	Dec. 31, 2013
Restructuring and Related Activities [Abstract]	'
Employee Separation and Plant Phase-Out Costs	'
	In 2013, PolyOne determined it would close six former Spartech North American manufacturing facilities and one administrative office in Washington, Pennsylvania, and relocate production to other PolyOne facilities. Further, in 2013 PolyOne determined it would also close the former Spartech Donchery, France manufacturing facility. These actions are expected to be completed by the end of 2014. The manufacturing facilities’ closings are part of the Company’s ongoing integration of Spartech, which are designed to enable the Company to better serve customers, improve efficiency, and deliver a portion of the anticipated synergy-related cost savings in connection with the Spartech acquisition. In addition to these actions, PolyOne had incurred severance costs related to former Spartech executives and other employees, as well as asset related charges and other ongoing costs that were underway prior to PolyOne's acquisition of Spartech.
	The Company anticipates that it will incur approximately $65.0 million of charges in connection with the announced Spartech actions noted above. These costs include $27.0 million of severance, $24.0 million of asset related charges, including accelerated depreciation, and $14.0 million of other ongoing costs.
	The table below summarizes restructuring activity related to Spartech since the date of acquisition.
	(In millions)	Long-Lived Asset Charges			Employee Separation			Other Costs			Total
	Accrual balance at December 31, 2012	$	—		$	—		$	—		$	—
	Charge to expense	13.6			21.1			9.4			44.1
	Cash payments	—			(6.0		)	(9.4		)	(15.4		)
	Non-cash utilization	(13.6		)	—			—			(13.6		)
	Accrual balance at December 31, 2013	$	—		$	15.1		$	—		$	15.1
	We expect to recognize additional restructuring charges of approximately $20.9 million in 2014 related to these Spartech actions.
	In addition to the Spartech related charges incurred since the date of acquisition, in 2013, we incurred $7.9 million of restructuring and employee severance charges primarily related to other actions to realign production capacities and improve return on invested capital.
	Total 2013 restructuring charges of $52.0 million included $16.1 million recognized within Cost of goods sold and $35.9 million recognized in Selling and administrative expenses within the Consolidated Statements of Income and Corporate and eliminations within segment disclosures for the year ended December 31, 2013.
	During the second quarter of 2012, the Company undertook actions to realign production capacities and improve return on invested capital. These actions were primarily in response to weak demand in Europe. During 2012 these actions resulted in charges of $11.5 million related to plant closure costs and reductions in force. These costs are primarily recognized within Selling and administrative expense in our Consolidated Statement of Income and within Corporate and eliminations in our segment disclosures. We do not expect future charges related to these actions to be material.

Goodwill_And_Intangible_Assets

Goodwill And Intangible Assets	12 Months Ended
	Dec. 31, 2013
Goodwill and Intangible Assets Disclosure [Abstract]	'
Goodwill And Intangible Assets	'
	The total purchase price associated with acquisitions is allocated to the fair value of assets acquired and liabilities assumed based on their fair values at the acquisition date, with excess amounts recorded as goodwill. The acquisition of Spartech resulted in preliminary goodwill of $153.2 million.
	Goodwill as of December 31, 2013 and 2012, and changes in the carrying amount of goodwill by segment were as follows:
	(In millions)		Global				Global			Designed Structures and Solutions				Performance				PolyOne			Total
			Specialty				Color,							Products				Distribution
			Engineered				Additives							and
			Materials				and Inks							Solutions
	Goodwill, gross at January 1, 2012		$	101.4			$	313.4		$	—			$	182.4			$	1.6		$	598.8
	Accumulated impairment losses		(12.2		)		(16.1		)	—				(175.0		)		—			(203.3		)
	Goodwill, net at January 1, 2012		89.2				297.3			—				7.4				1.6			395.5
	Acquisitions of businesses		10				0.6			—				—				—			10.6
	Currency translation and other adjustments		(0.6		)		—			—				—				—			(0.6		)
	Balance at December 31, 2012		98.6				297.9			—				7.4				1.6			405.5
	Acquisitions of businesses		1.8				12.4			136.3				3.6				—			154.1
	Currency translation and other adjustments		(0.5		)		(0.1		)	—				—				—			(0.6		)
	Balance at December 31, 2013		$	99.9			$	310.2		$	136.3	—		$	11		—	$	1.6	—	$	559
	At December 31, 2013, PolyOne had $99.7 million of indefinite-lived other intangible assets that are not subject to amortization, consisting of a trade name of $33.2 million acquired as part of the 2008 acquisition of GLS Corporation (GLS), trade names of $63.1 million acquired as part of the acquisition of ColorMatrix and $3.4 million of in-process research and development (IPR&D) acquired as part of the ColorMatrix acquisition. Acquired IPR&D is accounted for as an indefinite-lived intangible asset until the project is complete. Upon completion, projects are reclassified to technology and amortized over their useful lives. IPR&D consists of one project that we expect to complete during 2014.
	Indefinite and finite-lived intangible assets consisted of the following:
			As of December 31, 2013
	(In millions)		Acquisition				Accumulated			Currency			Net
			Cost				Amortization			Translation
	Customer relationships		$	190.4			$	(34.1	)	$	0.1		$	156.4
	Sales contracts		11.4				(10.9		)	—			0.5
	Patents, technology and other		128.5				(19.4		)	0.1			109.2
	Indefinite-lived trade names		96.3				—			—			96.3
	In-process research and development		3.4				—			—			3.4
	Total		$	430			$	(64.4	)	$	0.2		$	365.8
			As of December 31, 2012
	(In millions)		Acquisition				Accumulated			Currency			Net
			Cost				Amortization			Translation
	Customer relationships		$	173.1			$	(25.7	)	$	0.5		$	147.9
	Sales contracts		11.4				(10.8		)	—			0.6
	Patents, technology and other		89.3				(10.1		)	0.1			79.3
	Indefinite-lived trade names		96.3				—			—			96.3
	In-process research and development		15.9				—			—			15.9
	Total		$	386			$	(46.6	)	$	0.6		$	340
	The fair values of intangible assets acquired in the Spartech acquisition included in the table below were determined using an income valuation approach. The fair value of these identifiable intangible assets, useful lives and valuation methodology are as follows:
	(In millions)	Fair Value			Useful Life	Valuation Method
	Technology	$	27.3		7 years	Relief-from royalty
	Customer Relationships	17.3			20 years	Multi-period excess earnings
		$	44.6
	Amortization of other finite-lived intangible assets for the years ended December 31, 2013, 2012 and 2011 was $17.8 million, $13.2 million and $3.8 million, respectively.
	As of December 31, 2013, we expect amortization expense on finite-lived intangibles for the next five years as follows:
		2014	2015	2016	2017	2018
	Expected amortization	$18.50	$18.30	$18.30	$18.20	$18.20

Financing_Arrangements

Financing Arrangements	12 Months Ended
	Dec. 31, 2013
Debt Disclosure [Abstract]	'
Financing Arrangements	'
	Total debt as of December 31 consisted of the following:
	(In millions)	December 31,			December 31,
		2013			2012 (1)
	7.500% debentures due 2015	$	48.7		$	50
	Senior secured term loan due 2017	—			294.5
	7.375% senior notes due 2020	316.6			360
	5.250% senior notes due 2023	600			—
	Other debt	23.6			2.4
	Total debt	$	988.9		$	706.9
	Less short-term and current portion of long-term debt	12.7			3.8
	Total long-term debt, net of current portion	$	976.2		$	703.1
	-1	Senior secured term loan includes $2.5 million of unamortized discounts.
	In 2013, we repurchased $43.4 million aggregate principal amount of our 7.375% senior notes due 2020, $1.3 million aggregate principal amount of our 7.50% debentures due 2015 and $1.6 million of other debt. Additionally, we recognized $5.2 million of debt extinguishment costs within Debt extinguishment costs in our Consolidated Statements of Income in connection with these repurchases.
	On February 28, 2013, PolyOne issued $600.0 million aggregate principal amount of senior notes, which mature on March 15, 2023. The senior notes bear an interest rate of 5.25% per year, payable semi-annually, in arrears, on March 15 and September 15 of each year, which commenced on September 15, 2013. We used a portion of the net proceeds of the offering to pay the cash portion of the Spartech acquisition, and to repay certain Spartech debt, including the $88.9 million aggregate principal amount of its senior notes due 2016 and related interest and make-whole payments totaling $13.4 million and all outstanding amounts under its revolving credit facility. We also used a portion of these net proceeds to make a voluntary $50.0 million contribution to our U.S. qualified defined benefit plan and to repay the outstanding principal amount of $297.0 million under our senior secured term loan.
	The senior secured term loan that was paid in full with proceeds from the issuance of our 2023 bonds was entered into on December 21, 2011 and had an aggregate principal amount of $300.0 million. We used the net proceeds from the term loan to partially fund the acquisition of ColorMatrix. The term loan was recorded at par value less a discount.
	We incurred debt extinguishment costs of $10.6 million related to the early retirement of our senior secured term loan including $8.2 million of deferred financing cost write-offs and $2.4 million of discounts that were written off. These costs are presented within Debt extinguishment costs in our Consolidated Statements of Income.
	On March 1, 2013, the agreement, dated December 21, 2011, governing our $300.0 million 5-year senior secured revolving credit facility was amended and restated. The amendment and restatement resulted in an increase in commitments of $100.0 million for 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. In connection with the amendment and restatement, we also extended the maturity date to March 1, 2018. As of December 31, 2013, we were in compliance with all covenants, had no outstanding borrowings and had availability of $282.3 million under this facility.
	On October 2, 2012, the Company entered into a credit line with Saudi Hollandi Bank for $10.7 million, 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. On November 14, 2013, the Company renewed and increased the credit line commitment with Saudi Hollandi Bank to $16.0 million, a portion of which is available for letters of credit. As of December 31, 2013, letters of credit under the credit line were $0.3 million and borrowings were $12.3 million with an interest rate of 1.85%.
	During 2013, we incurred $13.0 million in debt financing related fees. These costs are included in Other current and Other non-current assets and are being amortized over the life of their respective agreements.
	In November 2011, we repurchased the aggregate principal of $22.9 million of our 8.875% senior notes due 2012 at a premium of $0.9 million.
	Aggregate maturities of debt for the next five years and thereafter are as follows:
	(In millions)
	2014		$	12.7
	2015		57.2
	2016		0.5
	2017		0.5
	2018		0.6
	Thereafter		917.4
	Aggregate maturities		$	988.9
	Included in Interest expense, net for the years ended December 31, 2013, 2012 and 2011 was interest income of $1.3 million, $0.8 million and $0.7 million, respectively. Total interest paid on long-term and short-term borrowings was $50.4 million in 2013, $45.8 million in 2012 and $32.0 million in 2011.

Leasing_Arrangements

Leasing Arrangements	12 Months Ended
	Dec. 31, 2013
Leases [Abstract]	'
Leasing Arrangements	'
	We lease certain manufacturing facilities, warehouse space, machinery and equipment, automobiles and railcars under operating leases. Rent expense from continuing operations was $24.5 million in 2013, $20.2 million in 2012 and $21.2 million in 2011.
	Future minimum lease payments under non-cancelable operating leases with initial lease terms longer than one year as of December 31, 2013 are as follows (in millions):
	(In millions)
	2014	$	18.7
	2015	14.9
	2016	10.8
	2017	7.3
	2018	5.7
	Thereafter	19.3
	Total	$	76.7

Accounts_Receivable

Accounts Receivable	12 Months Ended
	Dec. 31, 2013
Receivables [Abstract]	'
Accounts Receivable	'
	Accounts receivable, net as of December 31 consist of the following:
	(In millions)	2013			2012
	Trade accounts receivable	$	433.2		$	318.2
	Allowance for doubtful accounts	(5.2		)	(4.3		)
	Accounts receivable, net	$	428		$	313.9
	The following table details the changes in allowance for doubtful accounts:
	(In millions)	2013			2012			2011
	Balance at beginning of the year	$	(4.3	)	$	(4.8	)	$	(4.1	)
	Provision for doubtful accounts	(0.2		)	(0.3		)	(2.0		)
	Accounts written off	0.2			0.4			1
	Currency translation and other adjustments	(0.9		)	0.4			0.3
	Balance at end of year	$	(5.2	)	$	(4.3	)	$	(4.8	)

Inventories

Inventories	12 Months Ended
	Dec. 31, 2013
Inventory Disclosure [Abstract]	'
Inventories	'
	Components of Inventories, net are as follows:
	(In millions)	December 31,		December 31,
		2013		2012
	At FIFO cost:
	Finished products	$	203.6	$	165
	Work in process	3.9		2.4
	Raw materials and supplies	135		77
	Inventories, net	$	342.5	$	244.4

Property

Property	12 Months Ended
	Dec. 31, 2013
Property, Plant and Equipment [Abstract]	'
Property	'
	Components of Property, net are as follows:
	(In millions)	December 31,			December 31,
		2013			2012
	Land and land improvements	$	52.5		$	34.7
	Buildings	315.4			241.4
	Machinery and equipment	1,079.20			844.5
		1,447.10			1,120.60
	Less accumulated depreciation and amortization	(800.9		)	(734.8		)
	Property, net	$	646.2		$	385.8
	Depreciation expense from continuing operations was $91.0 million in 2013, $52.6 million in 2012 and $49.4 million in 2011. Included in 2013 depreciation expense from continuing operations, was accelerated depreciation of $12.7 million related to announced restructuring actions.

Other_Balance_Sheet_Liabilitie

Other Balance Sheet Liabilities	12 Months Ended
	Dec. 31, 2013
Other Liabilities Disclosure [Abstract]	'
Other Balance Sheet Liabilities	'
	Other liabilities at December 31, 2013 and 2012 consist of the following:
		Accrued expenses and other liabilities				Other non-current liabilities
		December 31,				December 31,
	(In millions)	2013		2012		2013		2012
	Employment costs	$	128.7	$	81.5	$	19.1	$	22.7
	Environmental	12		10.8		113.9		64.6
	Taxes	34.7		17.2		—		—
	Pension and other post-employment benefits	5.7		5.9		—		—
	Accrued interest	16.2		8		—		—
	Other	12		18.5		36.4		14.8
	Total	$	209.3	$	141.9	$	169.4	$	102.1

Employee_Benefit_Plans

Employee Benefit Plans	12 Months Ended
	Dec. 31, 2013
Defined Benefit Pension Plans and Defined Benefit Postretirement Plans Disclosure [Abstract]	'
Employee Benefit Plans	'
	We recognize actuarial gains and losses, after consideration of inventory capitalization, in our operating results in the year in which the gains or losses occur. These gains and losses are generally only measured annually as of December 31 and, accordingly, are recorded during the fourth quarter of each year. In the fourth quarter of 2013, we recognized a pre-tax benefit of $44.0 million related to the actuarial gains during the year. We recognized a pre-tax charge of $42.0 million and $83.8 million in the fourth quarter of 2012 and 2011, respectively.
	We have several pension plans; however, as of December 31, 2013, only certain foreign plans accrue benefits. The plans generally provide benefit payments using a formula that is based upon employee compensation and length of service. All U.S. defined benefit pension plans are frozen, no longer accrue benefits and are closed to new participants.
	We sponsor several unfunded defined benefit post-retirement plans that provide subsidized health care and life insurance benefits to certain retirees and a closed group of eligible employees. In 2009, we adopted changes to our U.S. post-retirement healthcare plan whereby, effective January 1, 2010, the plan, for certain eligible retirees, was discontinued, and benefits were phased out through December 31, 2012. When this plan change was recognized in 2009, prior service cost amortization was calculated to fully amortize the prior service cost by the end of 2012, consistent with the period of continued benefits. Only certain employees hired prior to December 31,1999 are eligible to participate in our subsidized post-retirement health care and life insurance plans.
	The following tables present the change in benefit obligation, change in plan assets and components of funded status for defined benefit pension and post-retirement health care benefit plans. Actuarial assumptions that were used are also included.
		Pension Benefits								Health Care Benefits
	(In millions)	2013				2012				2013			2012
	Change in benefit obligation:
	Projected benefit obligation — beginning of year	$	597.2			$	543.5			$	18.9		$	21.9
	Service cost	1.7				1.5				—			—
	Interest cost	23.9				27.2				0.6			0.8
	Actuarial (gain) loss	(35.5		)		63.4				(1.0		)	(2.0		)
	Benefits paid	(51.5		)		(39.8		)		(2.0		)	(2.7		)
	Other	1.2				1.4				(0.1		)	0.9
	Projected benefit obligation — end of year	$	537			$	597.2			$	16.4		$	18.9
	Projected salary increases	2.8				2.8				—			—
	Accumulated benefit obligation	$	534.2			$	594.4			$	16.4		$	18.9
	Change in plan assets:
	Plan assets — beginning of year	$	410.4			$	335.6			$	—		$	—
	Actual return on plan assets	44.9				46.9				—			—
	Company contributions	68				66.8				1.8			2
	Plan participants’ contributions	—				—				0.2			0.5
	Benefits paid	(51.5		)		(39.8		)		(2.0		)	(2.7		)
	Other	0.4				0.9				—			0.2
	Plan assets — end of year	$	472.2			$	410.4			$	—		$	—
	Under-funded status at end of year	$	(64.8	)		$	(186.8	)		$	(16.4	)	$	(18.9	)
	Amounts included in the accompanying Consolidated Balance Sheets are as follows:
		Pension Benefits								Health Care Benefits
	(In millions)	2013				2012				2013			2012
	Non-current assets	$	1.8			$	—			$	—		$	—
	Accrued expenses and other liabilities	4				4				1.7			1.9
	Other non-current liabilities	62.6				182.8				14.7			17
	Change in accumulated other comprehensive loss before tax:
		Pension Benefits								Health Care Benefits
	(In millions)	2013				2012				2013			2012
	Prior year	$	0.3			$	0.3			$	—		$	(17.4	)
	Prior service credit recognized during year	—				—				—			17.4
	Current year	$	0.3			$	0.3			$	—		$	—
	As of December 31, 2013 and 2012, we had plans with total projected and accumulated benefit obligations in excess of the related plan assets as follows:
		Pension Benefits								Health Care Benefits
	(In millions)	2013				2012				2013			2012
	Projected benefit obligation	$	528.5			$	596.4			$	16.4		$	18.9
	Accumulated benefit obligation	525.6				593.6				16.4			18.9
	Fair value of plan assets	461.9				409.6				—			—
	Weighted-average assumptions used to determine benefit obligations at December 31:
		Pension Benefits						Health Care Benefits
		2013			2012			2013			2012
	Discount rate	4.83	%		4.12	%		4.38	%		3.71	%
	Assumed health care cost trend rates at December 31:
	Health care cost trend rate assumed for next year	N/A			N/A			7.02	%		7.39	%
	Rate to which the cost trend rate is assumed to decline (the ultimate trend rate)	N/A			N/A			4.5	%		4.63	%
	Year that the rate reaches the ultimate trend rate	N/A			N/A			2027			2025
	Assumed health care cost trend rates have an effect on the amounts reported for the health care plans. A one percentage point change in assumed health care cost trend rates would have the following impact:
	(In millions)	One Percentage				One Percentage
		Point Increase				Point Decrease
	Effect on total of service and interest cost	$	—			$	—
	Effect on post-retirement benefit obligation	1.1				(1.0		)
	The following table summarizes the components of net period benefit cost or gain that was recognized during each of the years in the three-year period ended December 31, 2013. Actuarial assumptions that were used are also included.
		Pension Benefits											Health Care Benefits
	(In millions)	2013				2012				2011			2013				2012			2011
	Components of net periodic benefit (gains) costs:
	Service cost	$	1.7			$	1.5			$	1.6		$	—			$	—		$	—
	Interest cost	23.9				27.2				28.3			0.6				0.8			1
	Expected return on plan assets	(37.4		)		(27.6		)		(29.2		)	—				—			—
Amortization of prior service cost	—				—				0.2			—				(17.4		)	(17.4		)
Mark-to-market actuarial net (gains) losses	(43.0		)		44				83.4			(1.0		)		(2.0		)	0.4
Net periodic benefit (gain) cost	$	(54.8	)		$	45.1			$	84.3		$	(0.4	)		$	(18.6	)	$	(16.0	)
Weighted-average assumptions used to determine net periodic benefit cost for the years ended December 31:
	Pension Benefits									Health Care Benefits
	2013			2012			2011			2013		2012			2011
Discount rate	4.12	%		5.11	%		5.71	%		3.71	%	4.66	%		5.07	%
Expected long-term return on plan assets	8.41	%		8.43	%		8.5	%		—	%	—	%		—	%
Assumed health care cost trend rates at December 31:
Health care cost trend rate assumed for next year	N/A			N/A			N/A			7.39	%	8.35	%		8.5	%
Rate to which the cost trend rate is assumed to decline (the ultimate trend rate)	N/A			N/A			N/A			4.63	%	5	%		5	%
Year that the rate reaches the ultimate trend rate	N/A			N/A			N/A			2025		2019			2018
The expected long-term rate of return on pension assets was determined after considering the historical experience of long-term asset returns by asset category, the expected investment portfolio mix and estimated future long-term investment returns. As our funded levels have improved during 2013, we have shifted our U.S. qualified pension assets to a larger fixed income weighting. As a result, we have lowered our weighted average expected return on plan assets to 6.85% in 2014. While this change will lower our expected return on plan assets, our strategy is for our assets to increase/decrease proportionally with our liability such that our funding levels do not deteriorate.
Our pension investment strategy is to diversify the portfolio among asset categories to enhance the portfolio’s risk-adjusted return as well as insulate it from exposure to changes in interest rates. Our asset mix considers the duration of plan liabilities, historical and expected returns of the investments, and the funded status of the plan. The pension asset allocation is reviewed and actively managed based on the funded status of the plan. As the funded status of the plan increases, the asset allocation is adjusted to increase the mix of fixed income investments and match the duration of those investments with the duration of the plan liabilities. Based on the current funded status of the plan, our pension asset investment allocation guidelines are to invest 70% to 80% in fixed income securities, 20% to 30% in equity securities and 0% to 10% in alternative investments and cash. These alternative investments may include funds of multiple asset investment strategies and funds of hedge funds.
The fair values of pension plan assets at December 31, 2013 and 2012, by asset category, are as follows:
	Fair Value of Plan Assets at December 31, 2013															Fair Value of Plan Assets at December 31, 2012
(In millions)	Quoted				Significant				Significant			Total				Quoted			Significant			Significant		Total
	Prices in				Other				Unobservable							Prices in			Other			Unobservable
	Active				Observable				Inputs							Active			Observable			Inputs
	Markets				Inputs				(Level 3)							Markets			Inputs			(Level 3)
	(Level 1)				(Level 2)											(Level 1)			(Level 2)
Asset category
Cash	$	6.6			$	—			$	—		$	6.6			$	3.4		$	—		$	—	$	3.4
Common collective trusts	—				14.8				—			14.8				—			44.9			—		44.9
Large-cap equity	28.4				30				—			58.4				43.2			51.1			—		94.3
Mid-cap equity	—				—				—			—				42.3			—			—		42.3
Small-cap equity	22				—				—			22				39.8			—			—		39.8
International equity	59.6				—				—			59.6				80.6			—			—		80.6
Fixed-income funds	275.5				—				—			275.5				39.3			—			—		39.3
Multi-asset mutual fund	—				—				—			—				32.6			—			—		32.6
Floating rate income funds	35.3				—				—			35.3				33.2			—			—		33.2
Totals	$	427.4			$	44.8			$	—		$	472.2			$	314.4		$	96		$	—	$	410.4
Large cap equity funds invest primarily in U.S. publicly-traded equity securities of companies with a market capitalization typically in excess of $10 billion with a focus on growth or value. Mid cap equity funds invest primarily in U.S. publicly-traded equity securities of companies with a market capitalization typically greater than $2 billion but less than $10 billion with a focus on growth or value. Small cap equity funds invest primarily in U.S. publicly-traded equity securities of companies with a market capitalization typically less than $2 billion with a focus on growth or value. International equity funds invest in publicly-traded equity securities of companies predominantly in the United States, developed international countries and emerging markets typically with a market capitalization greater than $2 billion with a focus on growth or value and are invested across the capitalization spectrum. Fixed income funds invest primarily in investment grade fixed income securities. The multi-asset mutual fund strategy is based on a diverse range of investments including, but not limited to, investment grade and high yield bonds, international and emerging market bonds, inflation-indexed bonds, equities and commodities. The floating rate income fund strategy is to invest primarily in a diversified portfolio of first and second lien high-yield senior floating rate loans and other floating rate debt securities. The common collective trust fund invests primarily in cash and other short-term investments, and is used as a temporary investment for our contributions to the pension plans until the contributions are allocated to other investments according to our investment strategy.
The fair value of the common collective trust fund is based on the net asset value per share of the fund, which is based on the fair market value of the underlying fund's assets. Level 2 investments included within large cap equity are commingled trusts and are valued using a net asset value per share that is based on quoted market prices and/or other market data for the same or comparable instruments and transactions of the underlying equity investments. All other investments are Level 1 and are valued based on quoted market prices.
The estimated future benefit payments for our pension and health care plans are as follows:
(In millions)	Pension				Health
	Benefits				Care
					Benefits
2014	$	39.1			$	1.7
2015	40				1.6
2016	39.5				1.6
2017	39.5				1.5
2018	39.8				1.5
2019 through 2023	195.5				6.2
We currently estimate that 2014 employer contributions will be $19.9 million to all qualified and non-qualified pension plans and $1.7 million to all healthcare benefit plans.
PolyOne sponsors various voluntary retirement savings plans (RSP). Under the provisions of the plans, eligible employees receive defined Company contributions and are eligible for Company matching contributions based on their eligible earnings contributed to the plan. In addition, we may make discretionary contributions to the plans for eligible employees based on a specific percentage of each employee’s compensation.
Following are our contributions to the RSP:
(In millions)	2013				2012				2011
Retirement savings match	$	9.8			$	7.6			$	7.1
Retirement benefit contribution	4				3.8				3.9
Total contributions	$	13.8			$	11.4			$	11

Commitments_And_Contingencies

Commitments And Contingencies	12 Months Ended
	Dec. 31, 2013
Commitments and Contingencies Disclosure [Abstract]	'
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 facility 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. We have also undertaken steps to develop a feasibility study, including engaging a third party to perform ground water modeling at this site. Utilizing the preliminary results of the ground water modeling study that we obtained in the fourth quarter of 2013 we were able to develop estimates for potential remedies at Calvert City. Based upon this information, we recognized a $47.0 million charge in the fourth quarter of 2013 associated with the anticipated remedy. This charge represents our best estimate of the construction of a barrier wall and future remediation costs at this location, above existing accruals. We expect to finalize the RIFS in 2014 and expect the majority of expenditures associated with this change to occur throughout 2016 and 2017. We are pursuing available insurance coverage for these expenditures. 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 manufacturing facility in Kearny, New Jersey, located adjacent to the Lower Passaic River. Spartech acquired the owner of this facility, Franklin Plastics Corp., in a 1986 stock transaction, and Franklin Plastics Corp. subsequently became Franklin-Burlington. 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 or agree to bear any such remediation or natural resource damage costs. The USEPA continues to evaluate the remedial options, and the scope and cost of any remedial activity has not yet been determined.
	Given the uncertainties related to the Lower Passaic River, including the fact that the final remedial actions and scope, and the ultimate allocation to Franklin-Burlington, have not yet been determined, we are not able to assess or estimate our remedial liability, if any, related to this matter.
	Based on our estimates we had accruals totaling $125.9 million and $75.4 million as of December 31, 2013 and 2012, respectively, for probable future environmental expenditures relating to previously contaminated sites. These accruals are undiscounted and included in Accrued expenses and other liabilities and Other non-current liabilities on the accompanying Consolidated Balance Sheets. The accruals represent our best estimate of probable future costs that we can reasonably estimate, 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 December 31, 2013. However, such additional costs, if any, cannot be currently estimated. Our estimate of this liability may be revised as new regulations or technologies are developed or additional information is obtained.
	We believe that the probability is remote that losses in excess of amounts we have accrued would be materially adverse to our financial position, results of operations or cash flows.
	The following table details the changes in the environmental accrued liabilities:
	(In millions)	2013			2012			2011
	Balance at beginning of the year	$	75.4		$	76.2		$	87.4
	Environmental expenses	61.2			12.8			9.7
	Net cash payments	(14.3		)	(13.7		)	(20.8		)
	Currency translation and other	3.6			0.1			(0.1		)
	Balance at end of year	$	125.9		$	75.4		$	76.2
	Included in Cost of sales in the accompanying Consolidated Statements of Income are insurance reimbursements received for previously incurred environmental costs of $23.5 million and $3.3 million in 2013 and 2011, respectively.
	Litigation related to the Merger with Spartech — On March 5, 2013, counsel for the parties in the lawsuits entered into a memorandum of understanding, in which they agreed on the terms of a settlement of the In re Spartech Corporation Shareholder Litigation, including dismissal with prejudice and a release of all claims made therein against all defendants. Defendants agreed to the terms of the proposed settlement in order to avoid the substantial burden, expense, risk, inconvenience, and distraction of continued litigation, including the risk of delaying or adversely affecting the merger. On October 22, 2013, the parties entered into a stipulation of settlement. The proposed settlement remains conditioned upon, among other things, final approval of the proposed settlement by the Circuit Court of St. Louis County, Missouri. There can be no assurance that the court will approve the settlement, or that the settlement conditions will be met. PolyOne is insured with respect to these lawsuits.
	Other Litigation — In 2013, we received $7.0 million in connection with the resolution of commercial litigation in which we had an interest. We recognized this gain within Selling and administrative expense in our Consolidated Statements of Income.
	We are involved in various pending or threatened claims, lawsuits and administrative proceedings, all arising from the ordinary course of business concerning commercial, product liability, employment and environmental matters that seek remedies or damages. We believe that the probability is remote that losses in excess of the amounts we have accrued would be materially adverse to our financial position, results of operations or cash flows.
	Guarantees — On February 28, 2011, we sold our 50% equity interest in SunBelt to Olin Corporation for $132.3 million in cash and the assumption by Olin of the obligations under our guarantee of senior secured notes issued by SunBelt of $42.7 million at the time of sale, $24.4 million as of December 31, 2013. Until 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.

Income_Taxes

Income Taxes	12 Months Ended
	Dec. 31, 2013
Income Tax Disclosure [Abstract]	'
Income Taxes	'
	Income from continuing operations, before income taxes is summarized below based on the geographic location of the operation to which such earnings are attributable. Certain foreign operations are branches of PolyOne and are, therefore, subject to United States as well as foreign income tax regulations. As a result, pre-tax income by location and the components of income tax expense by taxing jurisdiction are not directly related.
	Income from continuing operations, before income taxes consists of the following:
	(In millions)	2013			2012			2011
	Domestic	$	105.2		$	46.2		$	120.2
	Foreign	45.8			37.1			48.7
	Income from continuing operations, before income taxes	$	151		$	83.3		$	168.9
	A summary of income tax expense from continuing operations is as follows:
	(In millions)	2013			2012			2011
	Current:
	Federal	$	(17.4	)	$	(1.7	)	$	3.1
	State	(2.8		)	(0.9		)	(1.2		)
	Foreign	(23.3		)	(14.7		)	(14.1		)
	Total current	$	(43.5	)	$	(17.3	)	$	(12.2	)
	Deferred:
	Federal	$	(12.9	)	$	(15.8	)	$	(18.8	)
	State	(1.8		)	0.1			13.9
	Foreign	0.1			2.9			1.6
	Total deferred	$	(14.6	)	$	(12.8	)	$	(3.3	)
	Total income tax expense	$	(58.1	)	$	(30.1	)	(15.5		)
	Refer to Note 3, Discontinued Operations for income tax expense allocated to discontinued operations.
	Reconciliation of income taxes from the U.S. statutory rate of 35% to the consolidated effective tax rate is as follows:
	(In millions)	2013			2012			2011
	Income tax expense at 35% of income from continuing operations, before income taxes	$	(52.8	)	$	(29.2	)	$	(59.1	)
	State tax, net of federal benefit	(3.9		)	(1.3		)	(2.2		)
	Differences in rates of foreign operations	(1.2		)	3.3			3.9
	Changes in valuation allowances	(3.1		)	(0.9		)	13
	U.S. research and development credit	2.1			—			0.6
	Tax benefits associated with O’Sullivan Engineered Films	—			—			29.5
	Recognition of uncertain tax positions	0.5			0.1			(4.5		)
	Other, net	0.3			(2.1		)	3.3
	Income tax expense	$	(58.1	)	$	(30.1	)	$	(15.5	)
	In 2011, we recognized income tax expense primarily related to the sale of our SunBelt joint venture offset by a tax benefit associated with our divested investment in O'Sullivan Engineered Films, Inc. We also recognized a tax benefit related to a reduction in deferred tax valuation allowances related to various state and foreign deferred tax assets of $13.0 million.
	Components of our deferred tax liabilities and assets as of December 31, 2013 and 2012 were as follows:
	(In millions)	2013			2012
	Deferred tax liabilities:
	Tax over book depreciation	$	87.1		$	39.1
	Intangibles	126.1			98.8
	Other, net	19.9			9.2
	Total deferred tax liabilities	$	233.1		$	147.1
	Deferred tax assets:
	Pension and other Post-retirement benefits	$	20.6		$	64.7
	Employment costs	36.8			23.4
	Environmental	49.3			27.9
	Net operating loss carryforwards	38			31.2
	Other, net	32.6			10.4
	Total deferred tax assets	$	177.3		$	157.6
	Valuation allowances	(29.3		)	(18.9		)
	Net deferred tax liabilities	$	(85.1	)	$	(8.4	)
	As of December 31, 2013, we have combined state net operating loss carryforwards of $230.9 million that expire at various dates from 2014 through 2032. Various foreign subsidiaries have net operating loss carryforwards totaling $106.4 million that expire at various dates from 2014 through 2022. We have provided valuation allowances of $23.1 million against certain foreign and state loss carryforwards.
	No provision has been made for income taxes on undistributed earnings of consolidated non-U.S. subsidiaries of $286.5 million at December 31, 2013 since it is our intention to indefinitely reinvest undistributed earnings of our foreign subsidiaries. It is not practicable to estimate the additional income taxes and applicable foreign withholding taxes that would be payable on the remittance of such undistributed earnings.
	We made worldwide income tax payments of $120.3 million and received refunds of $2.9 million in 2013. We made worldwide income tax payments of $30.8 million and $32.6 million in 2012 and 2011, respectively, and received refunds of $13.0 million and $1.0 million in 2012 and 2011, respectively. The increase in income tax payments made in 2013 is primarily related to higher 2013 earnings and the gain recognized related to the divestiture of the Resin Business.
	The Company records provisions for uncertain tax provisions in accordance with ASC Topic 740, Income Taxes. A reconciliation of unrecognized tax benefits is as follows:
		Unrecognized Tax Benefits
	(In millions)	2013			2012			2011
	Balance as of January 1	$	14.5		$	15.1		$	9.9
	Additions based on tax positions related to the current year	—			0.2			4.5
	Additions for tax positions of prior years	1.1			—			1.3
	Reductions for tax positions of prior years	(0.9		)	(0.4		)	(0.6		)
	Settlements and other	0.5			(0.4		)	—
	Balance as of December 31	$	15.2		$	14.5		$	15.1
	We recognize interest and penalties related to uncertain tax positions in the provision for income taxes. As of December 31, 2013 and 2012, we had accrued $3.0 million and $2.3 million for interest and penalties, respectively.
	Although the timing and outcome of tax settlements are uncertain, it is reasonably possible that during the next 12 months a reduction in unrecognized tax benefits may occur up to $3.8 million based on the outcome of tax examinations and as a result of the expiration of various statues of limitations.
	If all unrecognized tax benefits were recognized, the net impact on the provision for income tax expense would be $12.9 million.
The Company is currently being audited by the IRS and multiple state and foreign taxing jurisdictions. We are no longer subject to U.S. federal income tax examinations for periods preceding 2007 and with limited exceptions, for periods preceding 2006 for state and 2002 for foreign tax examinations.

ShareBased_Compensation

Share-Based Compensation	12 Months Ended
	Dec. 31, 2013
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]	'
Share-Based Compensation	'
	Share-based compensation cost is based on the value of the portion of share-based payment awards that are ultimately expected to vest during the period. Share-based compensation cost recognized in the accompanying Consolidated Statements of Income includes compensation cost for share-based payment awards based on the grant date fair value estimated in accordance with the provision of FASB ASC Topic 718, Compensation — Stock Compensation. Share-based compensation expense is based on awards expected to vest, therefore has been reduced for estimated forfeitures. We estimate forfeitures at the time of grant and revise that estimate, if necessary, in subsequent periods if actual forfeitures differ from those estimates.
	Equity and Performance Incentive Plans
	On May 12, 2010, our shareholders approved the PolyOne Corporation 2010 Equity and Performance Incentive Plan (2010 EPIP). The 2010 EPIP provides for the award of a variety of share-based compensation alternatives, including non-qualified stock options, incentive stock options, restricted stock, restricted stock units (RSUs), performance shares, performance units and stock appreciation rights (SARs). On May 19, 2012, our shareholders approved an amendment to this plan whereby, among other provisions, a total of 5.0 million common shares (a 2.0 million increase from the amount authorized in May of 2010) are reserved for grant under the 2010 EPIP. It is anticipated that all share-based grants and awards that are earned and exercised will be issued from PolyOne common shares that are held in treasury.
	Share-based compensation is included in Selling and administrative expense in the accompanying Consolidated Statements of Income. A summary of compensation expense by type of award follows:
	(In millions)	2013				2012			2011
	Stock appreciation rights	$	6.1			$	5.1		$	2.3
	Restricted stock units	10.4				5.3			3.1
	Total share-based compensation	$	16.5			$	10.4		$	5.4
	Stock Appreciation Rights
	During the years ended December 31, 2013, 2012 and 2011, the total number of SARs granted were 0.5 million, 0.8 million and 0.5 million, respectively. Awards granted in 2013 and 2012 vest in one-third increments annually over a three-year service period and upon the achievement of certain stock price targets. Awards granted in 2011 vest in one-third increments annually over a three-year service period. Outstanding SARs have contractual terms ranging from seven to ten years from the date of the grant.
	The SARs granted during 2013 and 2012 were valued using a Monte Carlo simulation method as the vesting is dependent on the achievement of certain stock price targets. These SARs have time and market-based vesting conditions but vest no earlier than their three year graded vesting schedule. As of December 31, 2013, all market conditions were met. Exercises are assumed to occur between vesting and maturity and the resulting expected term is an output from the Monte Carlo simulation valuation model. The expected volatility was determined based on the average weekly volatility for our common shares for the contractual life of the awards. The expected dividend assumption was determined based upon PolyOne's dividend yield at the time of grant. The risk-free rate of return was based on available yields on U.S. Treasury bills of the same duration as the contractual life of the awards. Forfeitures were estimated at 3% per year based on our historical experience.
	The SARs granted during 2011 were valued using the Black-Scholes method as the awards only have time-based vesting requirements. The expected term of SARs granted was determined based on the “simplified method” described in Staff Accounting Bulletin (SAB) Topic 14.D.2, which is permitted if historical exercise experience is not sufficient. The expected volatility was determined based on the average weekly volatility for our common shares for the expected term of the awards. Expected dividends were determined based upon the declared dividend yield at the time the SAR was granted. The risk-free rate of return was based on available yields on U.S. Treasury bills of the same duration as the expected option term. Forfeitures were estimated at 3% per year based on our historical experience.
	The following is a summary of the weighted average assumptions related to the grants issued during 2013, 2012 and 2011:
		2013		2012		2011
	Expected volatility (weighted-average)	50.00%		53.00%		56.00%
	Expected dividends	1.04%		1.37%		—%
	Expected term (in years)	7.4		8		6
	Risk-free rate	2.12%		2.05%		2.86%
	Value of SARs granted	$10.83		$6.92		$8.12
	A summary of SAR activity for 2013 is presented below:
	Stock Appreciation Rights	Shares			Weighted-Average			Weighted-Average			Aggregate
					Exercise Price			Remaining			Intrinsic
					Per Share			Contractual Term			Value
	In millions, except per share data)
	Outstanding as of January 1, 2013	2.1			$	11.31		6.58			$	19.2
	Granted	0.5			23.08			—
	Spartech Replacement award issuance	0.5			25.05			—
	Exercised	(0.9	)		11.49			—
	Forfeited or expired	(0.1	)		18.05			—
	Outstanding as of December 31, 2013	2.1			$	16.63		6.33			$	39.3
	Vested and exercisable as of December 31, 2013	1			$	14.94		3.99			$	20.6
	The total intrinsic value of SARs exercised during 2013, 2012 and 2011 was $14.9 million, $25.5 million and $8.0 million, respectively. As of December 31, 2013, there was $3.2 million of total unrecognized compensation cost related to SARs, which is expected to be recognized over the weighted average remaining vesting period of 17 months.
	Restricted Stock Units
	Restricted Stock Units (RSUs) represent contingent rights to receive one common share at a future date provided certain vesting criteria are met.
	During 2013, 2012 and 2011, the total number of RSUs granted were 0.5 million, 0.6 million and 0.3 million, respectively. These RSUs, which vest on the third anniversary of the grant date, were granted to executives and other key employees. Compensation expense is measured on the grant date using the quoted market price of our common shares and is recognized on a straight-line basis over the requisite service period.
	As of December 31, 2013, 1.3 million RSUs remain unvested with a weighted-average grant date fair value of $18.60. Unrecognized compensation cost for RSUs at December 31, 2013 was $9.3 million, which is expected to be recognized over the weighted average remaining vesting period of 15 months.

Segment_Information

Segment Information	12 Months Ended
	Dec. 31, 2013
Segment Reporting [Abstract]	'
Segment Information	'
	A segment is a component of an enterprise whose operating results are regularly reviewed by the enterprise’s chief operating decision makers to make decisions about resources to be allocated to the segment and assess its performance, and for which discrete financial information is available.
	Operating income is the primary measure that is reported to our chief operating decision makers 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-out 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 makers. These costs are included in Corporate and eliminations.
	Segment assets are primarily customer receivables, inventories, net property, plant and equipment, intangibles and goodwill. Intersegment sales are generally accounted for at prices that approximate those for similar transactions with unaffiliated customers. Corporate and eliminations includes cash, debt, environmental liabilities, retained assets and liabilities of discontinued operations, and other unallocated corporate assets and liabilities. The accounting policies of each segment are consistent with those described in Note 1, Description of Business and Summary of Significant Accounting Policies.
	The following is a description of each of our five reportable segments.
	Global Specialty Engineered Materials
	Global Specialty Engineered Materials is a leading provider of specialty polymer formulations, services and solutions for designers, assemblers and processors of thermoplastic materials across a wide variety of markets and end-use applications. Our product portfolio, which we believe to be one of the most diverse in our industry, includes specialty formulated high-performance polymer materials that are manufactured using thermoplastic resins and elastomers, which are then combined with advanced polymer additives, reinforcement, filler, colorant and/or biomaterial technologies. Our technical and market expertise enables us to expand the performance range and structural properties of traditional engineering-grade thermoplastic resins to meet evolving customer needs. Global Specialty Engineered Materials has manufacturing, sales and service facilities located throughout North America, Europe, Asia and South America. Our product development and application reach is further enhanced by the capabilities of our Innovation Centers in the United States, Germany and China, which produce and evaluate prototype and sample parts to help assess end-use performance and guide product development. Our manufacturing capabilities are targeted at meeting our customers’ demand for speed, flexibility and critical quality.
	On December 19, 2012, the Company acquired Glasforms, a leading manufacturer of glass and carbon fiber reinforced polymers and advanced composite products. Glasforms results are included within the Global Specialty Engineered Materials segment from the date of the acquisition.
	Global Color, Additives and Inks
	Global Color, Additives and Inks is a leading provider of specialized custom color and additive concentrates in solid and liquid form for thermoplastics, dispersions for thermosets, as well as specialty inks, plastisols, and vinyl slush molding solutions. Color and additive solutions include an innovative array of colors, special effects and performance-enhancing and eco-friendly solutions. When combined with a non-base resin, our solutions help customers achieve differentiated specialized colors and effects targeted at the demands of today’s highly design-oriented consumer and industrial end markets. Our additive concentrates encompass a wide variety of performance and process enhancing characteristics and are commonly categorized by the function that they perform, such as UV stabilization, antimicrobial, anti-static, blowing or foaming, antioxidant, lubricant, and productivity enhancement. Our colorant and additives concentrates are used in a broad range of polymers, including those used in medical and pharmaceutical devices, food packaging, personal care and cosmetics, transportation, building products, wire and cable markets. We also provide custom-formulated liquid systems that meet a variety of customer needs and chemistries, including vinyl, natural rubber and latex, polyurethane and silicone. Our offering also includes proprietary inks and latexes for diversified markets such as recreational and athletic apparel, construction and filtration, outdoor furniture and healthcare. Our liquid polymer coatings and additives are largely based on vinyl and are used in a variety of markets, including building and construction, consumer, healthcare, industrial, packaging, textiles, appliances, transportation, and wire and cable. Global Color, Additives and Inks has manufacturing, sales and service facilities located throughout North America, South America, Europe, Asia and Africa.
	On December 21, 2011, the Company completed the acquisition of all of the outstanding equity interests of ColorMatrix for $486.1 million, net of cash acquired. ColorMatrix is highly specialized developer and manufacturer of performance enhancing additives, liquid colorants, and fluoropolymer and silicone colorants.
	Designed Structures and Solutions
	On March 13, 2013, the Company completed the acquisition of Spartech, a supplier of plastic sheet, color and engineered materials, and packaging solutions. As a result of the acquisition, a new reportable segment, "Designed Structures and Solutions", was created. Designed Structures and Solutions is comprised of the former Spartech Custom Sheet and Rollstock and Packaging Technologies businesses. We believe PolyOne's Designed Structures and Solutions segment is a market leader in providing specialized, full service and innovative solutions in engineered polymer structures, rigid barrier packaging and specialty cast acrylics. We utilize a variety of polymers, specialty additives and processing technologies to produce a complete portfolio of sheet, custom rollstock and specialty film, laminate and acrylic solutions. Our solutions can be engineered to provide structural or functional performance in an application or deliver design and visual aesthetics to meet our customers’ needs. Our offering also includes a wide range of sustainable, cost-effective stock and custom packaging solutions for various industry processes used in the food, medical, consumer and graphic arts markets. In addition to packaging, we also work closely with customers to provide solutions for transportation, building and construction, healthcare and consumer markets. Designed Structures and Solutions has manufacturing, sales and service facilities located throughout North America.
	Performance Products and Solutions
	Performance Products and Solutions is comprised of the Geon Performance Materials and Producer Services business units. The Geon business delivers an array of products and services for vinyl molding and extrusion processors located in North America and Asia. The Geon brand name carries strong recognition globally. Geon Performance Materials' products are sold to manufacturers of durable plastic parts and consumer-oriented products. We also offer a wide range of services including materials testing, component analysis, custom formulation development, colorant and additive services, part design assistance, structural analysis, process simulations, mold design and flow analysis and extruder screw design. Vinyl is used across a broad range of markets and applications, including, but not limited to: wire and cable, healthcare, building and construction, consumer and recreational products and transportation and packaging. The Producer Services business unit offers contract manufacturing and outsourced polymer manufacturing services to resin producers and polymer marketers, primarily in the United States and Mexico, as well as its own proprietary compounds for pressure pipe and drip irrigation applications. As a strategic and integrated supply chain partner, Producer Services offers resin producers a way to develop custom products for niche markets by using our process technology expertise and multiple manufacturing platforms.
	As a result of the announced sale of our Resin Business on March 25, 2013, this business has been removed from the Performance Products and Solutions segment and presented as a discontinued operation.
	PolyOne Distribution
	Our PolyOne Distribution business distributes more than 3,500 grades of engineering and commodity grade resins, including PolyOne-produced compounds, to the North American, South America and Asia markets. These products are sold to over 6,000 custom injection molders and extruders who, in turn, convert them into plastic parts that are sold to end-users in a wide range of industries. Representing over 25 major suppliers, we offer our customers a broad product portfolio, just-in-time delivery from multiple stocking locations and local technical support.
	Financial information by reportable segment is as follows:
	Year Ended December 31, 2013	Sales to		Intersegment			Total Sales			Operating			Depreciation and		Capital		Total
	(In millions)	External		Sales						Income			Amortization (1)		Expenditures (1a)		Assets
		Customers
	Global Specialty Engineered Materials	$	571.9	$	43.6		$	615.5		$	57.2		$	18.8	$	14.3	$	379.6
	Global Color, Additives and Inks	844.6		7.7			852.3			104			38.8		29.3		962
	Designed Structures and Solutions	597.3		0.1			597.4			33.4			21.2		13.4		549.4
	Performance Products and Solutions	690.9		82.3			773.2			56			15.5		12.4		278.7
	PolyOne Distribution	1,066.50		8.7			1,075.20			63.3			0.6		0.3		216.7
	Corporate and eliminations	—		(142.4		)	(142.4		)	(82.4		)	13.9		6.5		557.7
	Total	$	3,771.20	$	—		$	3,771.20		$	231.5		$	108.8	$	76.2	$	2,944.10
	(1) Excludes $1.0 million of depreciation expense associated with the Resin Business.
	(1a) Excludes$0.2 million of capital expenditures associated with the Resin Business.
	Year Ended December 31, 2012	Sales to		Intersegment			Total Sales			Operating			Depreciation and		Capital		Total
	(In millions)	External		Sales						Income			Amortization (2)		Expenditures (2a)		Assets
		Customers
	Global Specialty Engineered Materials	$	504.9	$	38.7		$	543.6		$	47		$	14.3	$	12.9	$	396.6
	Global Color, Additives and Inks	776.1		2.1			778.2			75.3			32.9		28.2		901.7
	Performance Products and Solutions	554.9		75.4			630.3			38.8			13.7		4.6		205.4
	PolyOne Distribution	1,024.90		5.4			1,030.30			66			0.7		0.6		212.9
	Corporate and eliminations	—		(121.6		)	(121.6		)	(89.6		)	4.2		8.5		411.4
	Total	$	2,860.80	$	—		$	2,860.80		$	137.5		$	65.8	$	54.8	$	2,128.00
	(2) Excludes $4.0 million of depreciation expense associated with the Resin Business.
	(2a) Excludes $2.6 million of capital expenditures associated with the Resin Business.
	Year Ended December 31, 2011	Sales to		Intersegment			Total Sales			Operating			Depreciation and		Capital		Total
	(In millions)	External		Sales						Income			Amortization (3)		Expenditures (3a)		Assets
		Customers
	Global Specialty Engineered Materials	$	540.2	$	34.9		$	575.1		$	45.9		$	14.8	$	9.2	$	349.7
	Global Color, Additives and Inks	615		2.7			617.7			50.2			19.6		14.9		927.1
	Performance Products and Solutions	562.1		77			639.1			27.7			15		12.7		222.5
	PolyOne Distribution	992.1		4.4			996.5			56			0.7		0.2		183.5
	Corporate and eliminations	—		(119.0		)	(119.0		)	23.2			3.1		13.4		395.3
	Total	$	2,709.40	$	—		$	2,709.40		$	203		$	53.2	$	50.4	$	2,078.10
	(3) Excludes $4.3 million of depreciation expense associated with the Resin Business.
	(3a) Excludes $3.7 million of capital expenditures associated with the Resin Business.
	Gains and losses related to divestiture of equity investments are reflected in Corporate and eliminations. Amounts related to equity affiliates were $26.9 million, $23.4 million and $152.0 million for 2013, 2012 and 2011, respectively.
	Our sales are primarily to customers in the United States, Canada, Mexico, Europe, South America and Asia, and the majority of our assets are located in these same geographic areas. Following is a summary of sales and long-lived assets based on the geographic areas where the sales originated and where the assets are located:
	(In millions)	2013		2012			2011
	Net sales:
	United States	$	2,538.20	$	1,724.10		$	1,628.30
	Europe	519.7		488.1			491.3
	Canada	267.8		248.1			248.7
	Asia	239		221.2			196.3
	Mexico	158.1		141.8			102.6
	South America	48.4		37.5			42.2
	Long-lived assets:
United States	$	444.4	$	240.9		$	235.2
Europe	103		82.2			86.9
Canada	13.2		5.7			5.9
Asia	51.8		45.1			39.3
Mexico	20.5		3.5			2.7
South America	13.3		8.4			4.6

Common_Share_Data

Common Share Data	12 Months Ended
	Dec. 31, 2013
Earnings Per Share [Abstract]	'
Common Share Data	'
	Weighted-average shares used in computing net income per share are as follows:
	(In millions)	2013	2012	2011
	Weighted-average shares — basic:	95.5	89.1	92.2
	Plus dilutive impact of stock options and share-based awards	1	0.7	2.1
	Weighted-average shares — diluted:	96.5	89.8	94.3
	Basic net income per common share is computed as net income available to common shareholders divided by the weighted average basic shares outstanding. Diluted net income per common share is computed as net income available to common shareholders divided by the weighted average diluted shares outstanding.
	Outstanding share-based awards and options with exercise prices greater than the average price of the common shares are anti-dilutive and are not included in the computation of diluted net income per share. The number of anti-dilutive options and awards was 0.3 million, 1.2 million and 0.5 million at December 31, 2013, 2012 and 2011, respectively.
	In August 2008, our Board of Directors approved a stock repurchase program authorizing us, to repurchase up to 10.0 million of our common shares, in the open market or in privately negotiated transactions. On October 11, 2011, PolyOne’s Board of Directors increased the common share repurchase authorization amount by 5.25 million and on October 23, 2012 increased the authorization an additional 13.2 million. As of December 31, 2013, the total common shares available for repurchase is 15.0 million. PolyOne may make all or part of any repurchases pursuant to accelerated share repurchases or Rule 10b5-1 plans.
	We purchased 5.0 million, 1.2 million and 6.0 million shares in 2013, 2012 and 2011, respectively, at an aggregate price of $131.6 million, $15.9 million and $73.6 million, respectively, under these authorizations.

Derivative_Instruments

Derivative Instruments	12 Months Ended
	Dec. 31, 2013
Derivative Instruments and Hedging Activities Disclosure [Abstract]	'
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 lending transactions denominated in various foreign currencies that are subject to foreign exchange rate movement over the term of the loans. To mitigate these risks we enter into foreign exchange option and 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 Consolidated Balance Sheets. These instruments are not designated as a hedge, and therefore, any gain or loss is immediately recognized in income.
	The fair values of derivative financial instruments recorded in the Consolidated Balance Sheets are as follows:
		December 31, 2013
	(In millions)	Notional			Other current assets
	Foreign currency forwards	$	12.8		$	—
		December 31, 2012
	(In millions)	Notional			Other current assets
	Foreign currency options	$	31.2		$	0.6
	Foreign currency forwards	13.8			—
	Total				$	0.6
	The effects of derivative instruments on our Consolidated Statements of Income are as follows:
	(In millions)	2013			2012			2011			Location
	Foreign currency options - (losses)	$	(0.4	)	$	(1.4	)	$	—		Selling and administrative expense
	Foreign currency forwards - (losses)	(0.6		)	(0.4		)	(1.8		)	Other (expense) income, net

Fair_Value

Fair Value	12 Months Ended
	Dec. 31, 2013
Fair Value Disclosures [Abstract]	'
Fair Value	'
	Fair value is measured based on an exit price, representing the amount that would be received to sell an asset or paid to satisfy a liability in an orderly transaction between market participants. Fair value is a market-based measurement that is determined based on assumptions that market participants would use in pricing an asset or liability. As a basis for considering such assumptions, a fair value hierarchy is established, which categorizes the inputs used in measuring fair value as follows: (Level 1) observable inputs such as quoted prices in active markets; (Level 2) inputs, other than the quoted prices in active markets, that are observable either directly or indirectly; and (Level 3) unobservable inputs in which there is little or no market data, which require the reporting entity to develop its own assumptions.
	Financial instruments accounted for at fair value on a recurring basis as of December 31, 2013 and 2012 are as follows:
		December 31, 2013
	(In millions)	Total		Quoted prices		Other		Unobservable
				in active		observable		inputs
				markets for		inputs		(Level 3)
				identical assets		(Level 2)
				(Level 1)
	Cash and cash equivalents	$	365.2	$	365.2	$	—	$	—
		December 31, 2012
	(In millions)	Total		Quoted prices		Other		Unobservable
				in active		observable		inputs
				markets for		inputs		(Level 3)
				identical assets		(Level 2)
				(Level 1)
	Cash and cash equivalents	$	210	$	210	$	—	$	—
	Foreign currency options	0.6		—		0.6		—
	The fair value of derivative instruments is determined using widely accepted valuation techniques including discounted cash flow analysis on the expected cash flows of each derivative. This analysis reflects the contractual terms of the derivatives, including the period to maturity, and uses observable market-based inputs, including interest rate curves and spot and forward foreign currency rates as well as option volatility and non-performance risk.
	Other Fair Value Measurements
	The estimated fair value of PolyOne’s debt instruments at December 31, 2013 and 2012 was $1,010.3 million and $741.0 million, respectively, compared to carrying values of $988.9 million and $706.9 million as of December 31, 2013 and 2012, 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.
	In accordance with the provisions of FASB ASC Topic 350, Intangibles — Goodwill and Other, we assess the fair value of goodwill on an annual basis. The implied fair value of goodwill is determined based on significant unobservable inputs, as summarized below. Accordingly, these inputs fall within Level 3 of the fair value hierarchy. No impairment charges were included in 2013, 2012 or 2011. We use an income approach to estimate the fair value of our reporting units. The income approach uses a reporting unit’s projection of estimated operating results and cash flows that is discounted using a weighted-average cost of capital that is determined based on current market conditions. The projection uses management’s best estimates of economic and market conditions over the projected period including growth rates in sales, costs and number of units, estimates of future expected changes in operating margins and cash expenditures. Other significant estimates and assumptions include terminal value growth rates, terminal value margin rates, future capital expenditures and changes in future working capital requirements. We validate our estimates of fair value under the income approach by considering the implied control premium and conclude whether the implied control premium is reasonable based on other recent market transactions.
	Indefinite-lived intangible assets consist of a trade name acquired as part of the January 2008 acquisition of GLS, trade names acquired as part of the December 2011 acquisition of ColorMatrix, and in-process research and development acquired as part of the ColorMatrix acquisition. Indefinite-lived intangible assets are tested for impairment annually at the same time we test goodwill for impairment. The implied fair value of indefinite-lived intangible assets is determined based on significant unobservable inputs, as summarized below. Accordingly, these inputs fall within Level 3 of the fair value hierarchy. No impairment charges were included in 2013, 2012 or 2011.
	The fair value of the trade names is calculated using a “relief from royalty” methodology. This approach involves two steps (1) estimating reasonable royalty rates for the trade name and (2) applying this royalty rate to a net sales stream and discounting the resulting cash flows to determine fair value. This fair value is then compared with the carrying value of the trade name. The fair value of in-process research and development was calculated using the income approach.

Financial_Information_Of_Previ

Financial Information Of Previously Owned Equity Affiliates	12 Months Ended
	Dec. 31, 2013
Equity Method Investments and Joint Ventures [Abstract]	'
Financial Information Of Previously Owned Equity Affiliates	'
	On February 28, 2011, we sold our 50% equity interest in SunBelt to Olin Corporation for $132.3 million in cash, the assumption by Olin of the obligations under our guarantee of senior secured notes issued by SunBelt of $42.7 million at the time of sale, $24.4 million as of December 31, 2013, and three potential annual earn-out payments, if SunBelt met certain performance targets.
	We recognized a pre-tax gain of $128.2 million, net of associated transaction costs and equity income for period prior to the divestiture of $5.7 million, within Income related to previously owned equity affiliates for the sale of our equity interest in SunBelt for the year ended December 31, 2011. Additionally, we recognized a $26.9 million, $23.4 million and $18.1 million pre-tax gain associated with the three annual earn-out payments related to the sale of our 50% equity interest in SunBelt made in 2013, 2012 and 2011, respectively.

Description_Of_Business_And_Su1

Description Of Business And Summary Of Significant Accounting Policies (Policy)	12 Months Ended
	Dec. 31, 2013
Organization, Consolidation and Presentation of Financial Statements [Abstract]	'
Organization, Consolidation, Basis of Presentation, Business Description and Accounting Policies [Text Block]	'
	On March 13, 2013, PolyOne acquired Spartech Corporation (Spartech), a supplier of sustainable plastic sheet, color and engineered materials, and packaging solutions, based in Clayton, Missouri. The Spartech acquisition expands PolyOne's specialty portfolio with adjacent technologies in attractive end markets where we already participate, as well as new end markets such as aerospace and security. By combining Spartech's leading market positions in sheet, rigid barrier, packaging and specialty cast acrylics with PolyOne's capabilities, we believe we can better serve our customers and accelerate growth.
	On March 25, 2013, PolyOne entered into an agreement to sell its vinyl dispersion, blending and suspension resin assets (Resin Business) to Mexichem Specialty Resins Inc. (Mexichem), a wholly-owned subsidiary of Mexichem, S.A.B. de C.V., for $250.0 million cash consideration. The sale of the Resin Business occurred on May 30, 2013 which resulted in the recognition of a pre-tax gain of $223.7 million ($138.5 million, net of tax), which is reflected within the Income from discontinued operations, net of income taxes line of the Consolidated Statements of Income.
Basis of Accounting, Policy [Policy Text Block]	'
	Description of Business
	We are a premier provider of specialized polymer materials, services and solutions with operations in specialty polymer formulations, color and additive systems, plastic sheet and packaging solutions, and polymer distribution. We are also a highly specialized developer and manufacturer of performance enhancing additives, liquid colorants, and fluoropolymer and silicone colorants. Headquartered in Avon Lake, Ohio, we have employees at manufacturing sites and distribution facilities in North America, South America, Europe and Asia. We provide value to our customers through our ability to link our knowledge of polymers and formulation technology with our manufacturing and supply chain to provide value added solutions to designers, assemblers and processors of plastics (our customers). When used in this Annual Report on Form 10-K, the terms “we,” “us,” “our” and the “Company” mean PolyOne Corporation and its consolidated subsidiaries.
	Our operations are located primarily in the United States, Canada, Mexico, Europe, Asia and Brazil. Our operations are reported in five reportable segments: Global Specialty Engineered Materials; Global Color, Additives and Inks; Designed Structures and Solutions; Performance Products and Solutions; and PolyOne Distribution. See Note 16, Segment Information, for more information.
Consolidation And Basis Of Presentation	'
	Consolidation and Basis of Presentation
	The consolidated financial statements include the accounts of PolyOne and its subsidiaries. All majority-owned affiliates over which we have control are consolidated. Investments in affiliates and joint ventures in which our ownership is 50% or less, or in which we do not have control but have the ability to exercise significant influence over operating and financial policies, were accounted for under the equity method prior to their disposition (see Note 20, Financial Information of Previously Owned Equity Affiliates). Transactions with related parties, including joint ventures, are in the ordinary course of business.
Reclassification	'
	Reclassifications
	Certain reclassifications of the prior period amounts and presentation have been made to conform to the presentation for the current period.
Use Of Estimates	'
	Use of Estimates
	Preparation of financial statements in conformity with accounting principles generally accepted in the United States requires management to make estimates and assumptions in certain circumstances that affect amounts reported in the accompanying consolidated financial statements and notes. Actual results could differ from these estimates.
Cash And Cash Equivalents	'
	Cash and Cash Equivalents
	We consider all highly liquid investments purchased with a maturity of less than three months to be cash equivalents. Cash equivalents are stated at cost, which approximates fair value.
Allowance For Doubtful Accounts	'
	Allowance for Doubtful Accounts
	We evaluate the collectability of receivables based on a combination of factors. We regularly analyze significant customer accounts and, when we become aware of a specific customer’s inability to meet its financial obligations to us, such as in the case of a bankruptcy filing or deterioration in the customer’s operating results or financial position, we record a specific allowance for bad debt to reduce the related receivable to the amount we reasonably believe is collectible. We also record bad debt allowances for all other customers based on a variety of factors including the length of time the receivables are past due, the financial health of the customer, economic conditions and historical experience. In estimating the allowances, we take into consideration the existence of credit insurance. If circumstances related to specific customers change, our estimates of the recoverability of receivables could be adjusted further. Accounts receivable balances are written off against the allowance for doubtful accounts after a final determination of uncollectability has been made.
Inventories	'
	Inventories
	Inventories are stated at the lower of cost or market using the first-in, first-out (FIFO) method.
Long-lived Assets	'
	Long-lived Assets
	Property, plant and equipment is carried at cost, net of depreciation and amortization that is computed using the straight-line method over the estimated useful lives of the assets, which ranges from 3 to 15 years for machinery and equipment and up to 40 years for buildings. Computer software is amortized over periods not exceeding 10 years. Property, plant and equipment is generally depreciated on accelerated methods for income tax purposes. We expense repair and maintenance costs as incurred. We capitalize replacements and betterments that increase the estimated useful life of an asset.
	We retain fully depreciated assets in property and accumulated depreciation accounts until we remove them from service. In the case of sale, retirement or disposal, the asset cost and related accumulated depreciation balance is removed from the respective account, and the resulting net amount, less any proceeds, is included as a component of income from continuing operations in the accompanying Consolidated Statements of Income.
	We account for operating leases under the provisions of Financial Accounting Standards Board (FASB) Accounting Standards Codification (ASC) Topic 840, Leases.
Intangible Assets	'
	Finite-lived intangible assets, which consist primarily of customer relationships, sales contracts, patents and technology are amortized over their estimated useful lives. The remaining useful lives range up to 23 years.
Impairment or Disposal of Long-Lived Assets	'
	We assess the recoverability of long-lived assets when events or changes in circumstances indicate that we may not be able to recover the assets’ carrying amount. We measure the recoverability of assets to be held and used by a comparison of the carrying amount of the asset to the expected future undiscounted cash flows associated with the asset. We measure the amount of impairment of long-lived assets as the amount by which the carrying value of the asset exceeds the fair value of the asset, which is generally determined based on projected discounted future cash flows or appraised values.
Goodwill And Indefinite Lived Intangible Assets	'
	Goodwill and Indefinite Lived Intangible Assets
	Goodwill is the excess of the purchase price paid over the fair value of the net assets of the acquired business. Goodwill is tested for impairment at the reporting unit level. Our reporting units have been identified at the operating segment level, or in some cases, one level below the operating segment level. Goodwill is allocated to the reporting units based on the estimated fair value at the date of acquisition.
	Our annual measurement date for testing impairment of goodwill and other indefinite-lived intangibles is October 1st. We completed our testing of impairment as of October 1, noting no impairment in 2013, 2012 or 2011. The future occurrence of a potential indicator of impairment would require an interim assessment for some or all of the reporting units prior to the next required annual assessment on October 1, 2014. Refer to Note 19, Fair Value, for further discussion of our approach for assessing the fair value of goodwill.
Litigation Reserves	'
	Litigation Reserves
	FASB ASC Topic 450, Contingencies, requires that we accrue for loss contingencies associated with outstanding litigation, claims and assessments for which management has determined it is probable that a loss contingency exists and the amount of loss can be reasonably estimated. We record expense associated with professional fees related to litigation claims and assessments as incurred.
Derivative Financial Instruments	'
	Derivative Financial Instruments
	FASB ASC Topic 815, Derivative and Hedging, requires that all derivative financial instruments, such as foreign exchange contracts, be recognized in the financial statements and measured at fair value, regardless of the purpose or intent in holding them.
	We are exposed to foreign currency changes in the normal course of business. We have established policies and procedures that manage this exposure through the use of financial instruments. By policy, we do not enter into these instruments for trading purposes or speculation. These instruments are not designated as hedges and, as a result, are adjusted to fair value, with the resulting gains and losses recognized in the accompanying Consolidated Statements of Income immediately.
Pension And Other Post-Retirement Plans	'
	Pension and Other Post-retirement Plans
	We account for our pensions and other post-retirement benefits in accordance with FASB ASC Topic 715, Compensation — Retirement Benefits. This standard requires us to (1) recognize the funded status of the benefit plans in our Consolidated Balance Sheet, (2) recognize, as a component of other comprehensive income or net periodic benefit cost, the gains or losses and prior service costs or credits that arise during the period and (3) measure defined benefit plan assets and obligations as of December 31. We immediately recognize actuarial gains and losses, after consideration of inventory capitalization, in our operating results in the year in which the gains or losses occur.
Fair Value Of Financial Instruments	'
	Fair Value of Financial Instruments
	FASB ASC Topic 820, Fair Value Measurements and Disclosures, requires disclosures of the fair value of financial instruments. The estimated fair values of financial instruments were principally based on market prices where such prices were available and, where unavailable, fair values were estimated based on market prices of similar instruments. See Note 19, Fair Value, for further discussion.
Foreign Currency Translation	'
	Foreign Currency Translation
	Revenues and expenses are translated at average currency exchange rates during the related period. Assets and liabilities of foreign subsidiaries are translated using the exchange rate at the end of the period. The resulting translation adjustments are recorded as accumulated other comprehensive income or loss. Gains and losses resulting from foreign currency transactions, including intercompany transactions that are not considered permanent investments, are included in Other (expense) income, net in the accompanying Consolidated Statements of Income.
Revenue Recognition	'
	Revenue Recognition
	We recognize revenue when the revenue is realized or realizable and has been earned. We recognize revenue when a firm sales agreement is in place, shipment has occurred and collectability is reasonably assured.
Shipping And Handling Costs	'
	Shipping and Handling Costs
	Shipping and handling costs are included in cost of sales.
Research And Development Expense	'
	Research and Development Expense
	Research and development costs from continuing operations, which were $52.6 million in 2013, $41.3 million in 2012 and $36.4 million in 2011, are charged to expense as incurred.
Environmental Costs	'
	Environmental Costs
	We expense costs that are associated with managing hazardous substances and pollution in ongoing operations on a current basis. Costs associated with environmental contamination are accrued when it becomes probable that a liability has been incurred and our proportionate share of the cost can be reasonably estimated.
Equity Affiliates	'
	Equity Affiliates
	We account for our investments in equity affiliates under FASB ASC Topic 323, Investments — Equity Method and Joint Ventures. We recognize our proportionate share of the income of equity affiliates.
Share-Based Compensation	'
	Share-Based Compensation
	We account for share-based compensation under the provisions of FASB ASC Topic 718, Compensation — Stock Compensation, which requires us to estimate the fair value of share-based awards on the date of grant. The value of the portion of the award that is ultimately expected to vest is recognized as expense over the requisite service periods in the accompanying Consolidated Statements of Income. As of December 31, 2013, we had one active share-based employee compensation plan, which is described more fully in Note 15, Share-Based Compensation.
Income Taxes	'
	Income Taxes
	Deferred income tax liabilities and assets are determined based upon the differences between the financial reporting and tax basis of assets and liabilities and are measured using the tax rate and laws currently in effect. In accordance with FASB ASC Topic 740, Income Taxes, we evaluate our deferred income taxes to determine whether a valuation allowance should be established against the deferred tax assets or whether the valuation allowance should be reduced based on consideration of all available evidence, both positive and negative, using a “more likely than not” standard.

Description_Of_Business_And_Su2

Description Of Business And Summary Of Significant Accounting Policies (Tables)	12 Months Ended
	Dec. 31, 2013
Organization, Consolidation and Presentation of Financial Statements [Abstract]	'
Accumulated Other Comprehensive Loss	'
	Accumulated Other Comprehensive Loss
	Changes in accumulated other comprehensive loss in 2013, 2012 and 2011 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, 2011	$	(8.6	)	$	26.9		$	0.2	$	18.5
	Translation adjustments	(9.0		)	—			—		(9.0		)
	Prior service credits recognized during the year, net of tax of $6.5	—			(10.8		)	—		(10.8		)
	Balance at December 31, 2011	(17.6		)	16.1			0.2		(1.3		)
	Translation adjustments	1.1			—			—		1.1
	Prior service credits recognized during the year, net of tax of $6.5	—			(10.9		)	—		(10.9		)
	Balance at December 31, 2012	(16.5		)	5.2			0.2		(11.1		)
	Translation adjustments	(3.7		)	—			—		(3.7		)
	Balance at December 31, 2013	$	(20.2	)	$	5.2		$	0.2	$	(14.8	)

Business_Combinations_Tables

Business Combinations (Tables) (Spartech Corporation)	12 Months Ended
	Dec. 31, 2013
Spartech Corporation	'
Business Acquisition [Line Items]	'
Schedule of Recognized Identified Assets Acquired and Liabilities Assumed	'
	The following table summarizes PolyOne's preliminary fair value estimates at the acquisition date as of December 31, 2013:
	(In millions)	Preliminary allocation
	Accounts receivable, net	$	139.7
	Inventories, net	118.1
	Other current assets	17.2
	Property, net	280.3
	Other non-current assets	20.4
	Intangible assets, net	44.6
	Goodwill	153.2
	Total assets acquired	773.5
	Short-term and current portion of long-term debt	0.5
	Accounts payable	105.3
	Accrued expenses	43.2
	Long-term debt	11
	Other non-current liabilities	102.4
	Total liabilities assumed	262.4
	Net assets acquired	$	511.1
	Based on the closing price of PolyOne's common stock on March 13, 2013, the purchase price was comprised of the following:
	(In millions, except stock price and share data)
	Spartech shares outstanding	31.2
	Spartech restricted stock units	0.2
	Spartech shares converted	31.4
	Exchange ratio	0.3167
	PolyOne shares issued	10
	PolyOne closing stock price on March 13, 2013	$	25.05
	Total value of PolyOne shares issued	$	249.9
	Cash consideration transferred to Spartech shareholders	83.4
	Fair value of Spartech equity awards, net of deferred tax benefits (1)	2.4
	Total consideration transferred to Spartech equity holders	335.7
	Spartech revolving credit facilities repaid at close (2)	77.2
	Spartech senior notes repaid at close (2)	102.3
	Total consideration transferred to debt and equity holders	515.2
	Cash acquired	(4.1		)
	Total consideration transferred to debt and equity holders, net of cash acquired	$	511.1
	(1) In accordance with ASC 718, Compensation — Stock Compensation, the fair value of replacement awards attributable to pre-combination service is recognized as part of purchase consideration. The $2.4 million represents the fair value of Spartech replacement equity awards of $3.9 million net of deferred income tax benefits of $1.5 million. The fair value of awards attributable to post-combination service amounted to $2.7 million and are being recognized as stock compensation over their requisite service periods within PolyOne's Consolidated Statements of Income.
	(2) In accordance with the provisions of Spartech's 7.08% senior notes due 2016 and revolving credit facilities, at the time of closing, PolyOne repaid all borrowings under Spartech's revolving credit facilities, which amounted to $77.2 million. Additionally, PolyOne repaid $102.3 million related to Spartech's 7.08% senior notes due 2016, including $88.9 million of aggregated principal, $10.3 million make-whole provisions, and $3.1 million of interest payable.
Business Acquisition, Pro Forma Information	'
		Year Ended December 31,
	(In millions)	Pro Forma 2013			Pro Forma 2012
	Sales	$	3,989.20		$	4,006.90
	Net income from continuing operations	$	94.7		$	56.5

Discontinued_Operations_Tables

Discontinued Operations (Tables)	12 Months Ended
	Dec. 31, 2013
Discontinued Operations and Disposal Groups [Abstract]	'
Schedule of Disposal Groups, Including Discontinued Operations, Income Statement, Balance Sheet and Additional Disclosures	'
	The Resin Business' sales, income before income taxes and net income were as follows:
		Year Ended December 31,
	(In millions)	2013*			2012			2011
	Sales	$	55.3		$	131.8		$	154.1
	Gain on sale	$	223.7		$	—		$	—
	Income from operations	12.2			29.7			29.8
	Income before taxes	235.9			29.7			29.8
	Income tax expense	(86.1		)	(11.1		)	(10.6		)
	Income from discontinued operations, net of income taxes	$	149.8		$	18.6		$	19.2
	* Includes the Resin Business' operating results through May 29, 2013.
	The following table summarizes the assets and liabilities of the Resin Business:
	(In millions)		December 31,
	Assets:		2012
	Accounts receivable, net		$	8.8
	Inventories, net		8.2
	Property, net		21.7
	Other assets		0.6
	Assets held-for-sale		39.3
	Liabilities:
	Accounts payable		15.8
	Accrued expenses and other liabilities		2.2
	Liabilities held-for-sale		$	18

Employee_Separation_and_Plant_1

Employee Separation and Plant Phase-Out Costs Schedule of restructuring and related costs (Tables)	12 Months Ended
	Dec. 31, 2013
Restructuring and Related Activities [Abstract]	'
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 Costs			Total
	Accrual balance at December 31, 2012	$	—		$	—		$	—		$	—
	Charge to expense	13.6			21.1			9.4			44.1
	Cash payments	—			(6.0		)	(9.4		)	(15.4		)
	Non-cash utilization	(13.6		)	—			—			(13.6		)
	Accrual balance at December 31, 2013	$	—		$	15.1		$	—		$	15.1

Goodwill_And_Intangible_Assets1

Goodwill And Intangible Assets (Tables)	12 Months Ended
	Dec. 31, 2013
Goodwill and Intangible Assets Disclosure [Abstract]	'
Goodwill By Operating Segment	'
	Goodwill as of December 31, 2013 and 2012, and changes in the carrying amount of goodwill by segment were as follows:
	(In millions)		Global				Global			Designed Structures and Solutions				Performance				PolyOne			Total
			Specialty				Color,							Products				Distribution
			Engineered				Additives							and
			Materials				and Inks							Solutions
	Goodwill, gross at January 1, 2012		$	101.4			$	313.4		$	—			$	182.4			$	1.6		$	598.8
	Accumulated impairment losses		(12.2		)		(16.1		)	—				(175.0		)		—			(203.3		)
	Goodwill, net at January 1, 2012		89.2				297.3			—				7.4				1.6			395.5
	Acquisitions of businesses		10				0.6			—				—				—			10.6
	Currency translation and other adjustments		(0.6		)		—			—				—				—			(0.6		)
	Balance at December 31, 2012		98.6				297.9			—				7.4				1.6			405.5
	Acquisitions of businesses		1.8				12.4			136.3				3.6				—			154.1
	Currency translation and other adjustments		(0.5		)		(0.1		)	—				—				—			(0.6		)
	Balance at December 31, 2013		$	99.9			$	310.2		$	136.3	—		$	11		—	$	1.6	—	$	559
Carrying Value And Accumulated Amortization Of Intangible Assets	'
	Indefinite and finite-lived intangible assets consisted of the following:
			As of December 31, 2013
	(In millions)		Acquisition				Accumulated			Currency			Net
			Cost				Amortization			Translation
	Customer relationships		$	190.4			$	(34.1	)	$	0.1		$	156.4
	Sales contracts		11.4				(10.9		)	—			0.5
	Patents, technology and other		128.5				(19.4		)	0.1			109.2
	Indefinite-lived trade names		96.3				—			—			96.3
	In-process research and development		3.4				—			—			3.4
	Total		$	430			$	(64.4	)	$	0.2		$	365.8
			As of December 31, 2012
	(In millions)		Acquisition				Accumulated			Currency			Net
			Cost				Amortization			Translation
	Customer relationships		$	173.1			$	(25.7	)	$	0.5		$	147.9
	Sales contracts		11.4				(10.8		)	—			0.6
	Patents, technology and other		89.3				(10.1		)	0.1			79.3
	Indefinite-lived trade names		96.3				—			—			96.3
	In-process research and development		15.9				—			—			15.9
	Total		$	386			$	(46.6	)	$	0.6		$	340
Schedule of Finite-Lived Intangible Assets, Future Amortization Expense	'
	As of December 31, 2013, we expect amortization expense on finite-lived intangibles for the next five years as follows:
		2014	2015	2016	2017	2018
	Expected amortization	$18.50	$18.30	$18.30	$18.20	$18.20

Financing_Arrangements_Tables

Financing Arrangements (Tables)	12 Months Ended
	Dec. 31, 2013
Debt Disclosure [Abstract]	'
Schedule of Long-term Debt Instruments	'
	Total debt as of December 31 consisted of the following:
	(In millions)	December 31,			December 31,
		2013			2012 (1)
	7.500% debentures due 2015	$	48.7		$	50
	Senior secured term loan due 2017	—			294.5
	7.375% senior notes due 2020	316.6			360
	5.250% senior notes due 2023	600			—
	Other debt	23.6			2.4
	Total debt	$	988.9		$	706.9
	Less short-term and current portion of long-term debt	12.7			3.8
	Total long-term debt, net of current portion	$	976.2		$	703.1
Schedule of Maturities of Long-term Debt	'
	Aggregate maturities of debt for the next five years and thereafter are as follows:
	(In millions)
	2014		$	12.7
	2015		57.2
	2016		0.5
	2017		0.5
	2018		0.6
	Thereafter		917.4
	Aggregate maturities		$	988.9

Leasing_Arrangements_Tables

Leasing Arrangements (Tables)	12 Months Ended
	Dec. 31, 2013
Leases [Abstract]	'
Schedule of Future Minimum Rental Payments for Operating Leases	'
	Future minimum lease payments under non-cancelable operating leases with initial lease terms longer than one year as of December 31, 2013 are as follows (in millions):
	(In millions)
	2014	$	18.7
	2015	14.9
	2016	10.8
	2017	7.3
	2018	5.7
	Thereafter	19.3
	Total	$	76.7

Accounts_Receivable_Tables

Accounts Receivable (Tables)	12 Months Ended
	Dec. 31, 2013
Receivables [Abstract]	'
Schedule of Accounts, Notes, Loans and Financing Receivable	'
	Accounts receivable, net as of December 31 consist of the following:
	(In millions)	2013			2012
	Trade accounts receivable	$	433.2		$	318.2
	Allowance for doubtful accounts	(5.2		)	(4.3		)
	Accounts receivable, net	$	428		$	313.9
	The following table details the changes in allowance for doubtful accounts:
	(In millions)	2013			2012			2011
	Balance at beginning of the year	$	(4.3	)	$	(4.8	)	$	(4.1	)
	Provision for doubtful accounts	(0.2		)	(0.3		)	(2.0		)
	Accounts written off	0.2			0.4			1
	Currency translation and other adjustments	(0.9		)	0.4			0.3
	Balance at end of year	$	(5.2	)	$	(4.3	)	$	(4.8	)

Inventories_Tables

Inventories (Tables)	12 Months Ended
	Dec. 31, 2013
Inventory Disclosure [Abstract]	'
Components Of Inventories	'
	Components of Inventories, net are as follows:
	(In millions)	December 31,		December 31,
		2013		2012
	At FIFO cost:
	Finished products	$	203.6	$	165
	Work in process	3.9		2.4
	Raw materials and supplies	135		77
	Inventories, net	$	342.5	$	244.4

Property_Tables

Property (Tables)	12 Months Ended
	Dec. 31, 2013
Property, Plant and Equipment [Abstract]	'
Components Of Property, Net	'
	Components of Property, net are as follows:
	(In millions)	December 31,			December 31,
		2013			2012
	Land and land improvements	$	52.5		$	34.7
	Buildings	315.4			241.4
	Machinery and equipment	1,079.20			844.5
		1,447.10			1,120.60
	Less accumulated depreciation and amortization	(800.9		)	(734.8		)
	Property, net	$	646.2		$	385.8

Other_Balance_Sheet_Liabilitie1

Other Balance Sheet Liabilities (Tables)	12 Months Ended
	Dec. 31, 2013
Other Liabilities Disclosure [Abstract]	'
Components Of Other Liabilities	'
	Other liabilities at December 31, 2013 and 2012 consist of the following:
		Accrued expenses and other liabilities				Other non-current liabilities
		December 31,				December 31,
	(In millions)	2013		2012		2013		2012
	Employment costs	$	128.7	$	81.5	$	19.1	$	22.7
	Environmental	12		10.8		113.9		64.6
	Taxes	34.7		17.2		—		—
	Pension and other post-employment benefits	5.7		5.9		—		—
	Accrued interest	16.2		8		—		—
	Other	12		18.5		36.4		14.8
	Total	$	209.3	$	141.9	$	169.4	$	102.1

Employee_Benefit_Plans_Tables

Employee Benefit Plans (Tables)	12 Months Ended
	Dec. 31, 2013
Defined Benefit Pension Plans and Defined Benefit Postretirement Plans Disclosure [Abstract]	'
Change In Benefit Obligation, Change In Plan Assets And Components Of Funded Status	'
	The following tables present the change in benefit obligation, change in plan assets and components of funded status for defined benefit pension and post-retirement health care benefit plans. Actuarial assumptions that were used are also included.
		Pension Benefits								Health Care Benefits
	(In millions)	2013				2012				2013			2012
	Change in benefit obligation:
	Projected benefit obligation — beginning of year	$	597.2			$	543.5			$	18.9		$	21.9
	Service cost	1.7				1.5				—			—
	Interest cost	23.9				27.2				0.6			0.8
	Actuarial (gain) loss	(35.5		)		63.4				(1.0		)	(2.0		)
	Benefits paid	(51.5		)		(39.8		)		(2.0		)	(2.7		)
	Other	1.2				1.4				(0.1		)	0.9
	Projected benefit obligation — end of year	$	537			$	597.2			$	16.4		$	18.9
	Projected salary increases	2.8				2.8				—			—
	Accumulated benefit obligation	$	534.2			$	594.4			$	16.4		$	18.9
	Change in plan assets:
	Plan assets — beginning of year	$	410.4			$	335.6			$	—		$	—
	Actual return on plan assets	44.9				46.9				—			—
	Company contributions	68				66.8				1.8			2
	Plan participants’ contributions	—				—				0.2			0.5
	Benefits paid	(51.5		)		(39.8		)		(2.0		)	(2.7		)
	Other	0.4				0.9				—			0.2
	Plan assets — end of year	$	472.2			$	410.4			$	—		$	—
	Under-funded status at end of year	$	(64.8	)		$	(186.8	)		$	(16.4	)	$	(18.9	)
Amounts Included In Consolidated Balance Sheets	'
	Amounts included in the accompanying Consolidated Balance Sheets are as follows:
		Pension Benefits								Health Care Benefits
	(In millions)	2013				2012				2013			2012
	Non-current assets	$	1.8			$	—			$	—		$	—
	Accrued expenses and other liabilities	4				4				1.7			1.9
	Other non-current liabilities	62.6				182.8				14.7			17
Change In AOCI	'
	Change in accumulated other comprehensive loss before tax:
		Pension Benefits								Health Care Benefits
	(In millions)	2013				2012				2013			2012
	Prior year	$	0.3			$	0.3			$	—		$	(17.4	)
	Prior service credit recognized during year	—				—				—			17.4
	Current year	$	0.3			$	0.3			$	—		$	—
Schedule Of Projected And Accumulated Benefit Obligations In Excess Of Plan Assets	'
	As of December 31, 2013 and 2012, we had plans with total projected and accumulated benefit obligations in excess of the related plan assets as follows:
		Pension Benefits								Health Care Benefits
	(In millions)	2013				2012				2013			2012
	Projected benefit obligation	$	528.5			$	596.4			$	16.4		$	18.9
	Accumulated benefit obligation	525.6				593.6				16.4			18.9
	Fair value of plan assets	461.9				409.6				—			—
Weighted Average Assumptions Used To Determine Net Periodic Benefit Cost and Benefit Obligation	'
	Weighted-average assumptions used to determine net periodic benefit cost for the years ended December 31:
		Pension Benefits									Health Care Benefits
		2013			2012			2011			2013		2012			2011
	Discount rate	4.12	%		5.11	%		5.71	%		3.71	%	4.66	%		5.07	%
	Expected long-term return on plan assets	8.41	%		8.43	%		8.5	%		—	%	—	%		—	%
	Assumed health care cost trend rates at December 31:
	Health care cost trend rate assumed for next year	N/A			N/A			N/A			7.39	%	8.35	%		8.5	%
	Rate to which the cost trend rate is assumed to decline (the ultimate trend rate)	N/A			N/A			N/A			4.63	%	5	%		5	%
	Year that the rate reaches the ultimate trend rate	N/A			N/A			N/A			2025		2019			2018
	Weighted-average assumptions used to determine benefit obligations at December 31:
		Pension Benefits						Health Care Benefits
		2013			2012			2013			2012
	Discount rate	4.83	%		4.12	%		4.38	%		3.71	%
	Assumed health care cost trend rates at December 31:
	Health care cost trend rate assumed for next year	N/A			N/A			7.02	%		7.39	%
	Rate to which the cost trend rate is assumed to decline (the ultimate trend rate)	N/A			N/A			4.5	%		4.63	%
	Year that the rate reaches the ultimate trend rate	N/A			N/A			2027			2025
Impact Of One Percentage Point Change In Assumed Health Care Cost Trend Rates	'
	Assumed health care cost trend rates have an effect on the amounts reported for the health care plans. A one percentage point change in assumed health care cost trend rates would have the following impact:
	(In millions)	One Percentage				One Percentage
		Point Increase				Point Decrease
	Effect on total of service and interest cost	$	—			$	—
	Effect on post-retirement benefit obligation	1.1				(1.0		)
Components Of Net Period Benefit Cost	'
	The following table summarizes the components of net period benefit cost or gain that was recognized during each of the years in the three-year period ended December 31, 2013. Actuarial assumptions that were used are also included.
		Pension Benefits											Health Care Benefits
	(In millions)	2013				2012				2011			2013				2012			2011
	Components of net periodic benefit (gains) costs:
	Service cost	$	1.7			$	1.5			$	1.6		$	—			$	—		$	—
	Interest cost	23.9				27.2				28.3			0.6				0.8			1
	Expected return on plan assets	(37.4		)		(27.6		)		(29.2		)	—				—			—
	Amortization of prior service cost	—				—				0.2			—				(17.4		)	(17.4		)
	Mark-to-market actuarial net (gains) losses	(43.0		)		44				83.4			(1.0		)		(2.0		)	0.4
	Net periodic benefit (gain) cost	$	(54.8	)		$	45.1			$	84.3		$	(0.4	)		$	(18.6	)	$	(16.0	)
Fair Values Of Pension Plan Assets	'
	The fair values of pension plan assets at December 31, 2013 and 2012, by asset category, are as follows:
		Fair Value of Plan Assets at December 31, 2013															Fair Value of Plan Assets at December 31, 2012
	(In millions)	Quoted				Significant				Significant			Total				Quoted			Significant			Significant		Total
		Prices in				Other				Unobservable							Prices in			Other			Unobservable
		Active				Observable				Inputs							Active			Observable			Inputs
		Markets				Inputs				(Level 3)							Markets			Inputs			(Level 3)
		(Level 1)				(Level 2)											(Level 1)			(Level 2)
	Asset category
	Cash	$	6.6			$	—			$	—		$	6.6			$	3.4		$	—		$	—	$	3.4
	Common collective trusts	—				14.8				—			14.8				—			44.9			—		44.9
	Large-cap equity	28.4				30				—			58.4				43.2			51.1			—		94.3
	Mid-cap equity	—				—				—			—				42.3			—			—		42.3
	Small-cap equity	22				—				—			22				39.8			—			—		39.8
	International equity	59.6				—				—			59.6				80.6			—			—		80.6
	Fixed-income funds	275.5				—				—			275.5				39.3			—			—		39.3
	Multi-asset mutual fund	—				—				—			—				32.6			—			—		32.6
	Floating rate income funds	35.3				—				—			35.3				33.2			—			—		33.2
	Totals	$	427.4			$	44.8			$	—		$	472.2			$	314.4		$	96		$	—	$	410.4
Estimated Future Benefit Payments	'
	The estimated future benefit payments for our pension and health care plans are as follows:
	(In millions)	Pension				Health
		Benefits				Care
						Benefits
	2014	$	39.1			$	1.7
	2015	40				1.6
	2016	39.5				1.6
	2017	39.5				1.5
	2018	39.8				1.5
	2019 through 2023	195.5				6.2
Schedule Of Contributions To The Retirement Savings Plan	'
	Following are our contributions to the RSP:
	(In millions)	2013				2012				2011
	Retirement savings match	$	9.8			$	7.6			$	7.1
	Retirement benefit contribution	4				3.8				3.9
	Total contributions	$	13.8			$	11.4			$	11

Commitments_And_Contingencies_

Commitments And Contingencies (Tables)	12 Months Ended
	Dec. 31, 2013
Commitments and Contingencies Disclosure [Abstract]	'
Schedule Of Changes In Environmental Accrued Liabilities	'
	The following table details the changes in the environmental accrued liabilities:
	(In millions)	2013			2012			2011
	Balance at beginning of the year	$	75.4		$	76.2		$	87.4
	Environmental expenses	61.2			12.8			9.7
	Net cash payments	(14.3		)	(13.7		)	(20.8		)
	Currency translation and other	3.6			0.1			(0.1		)
	Balance at end of year	$	125.9		$	75.4		$	76.2

Income_Taxes_Tables

Income Taxes (Tables)	12 Months Ended
	Dec. 31, 2013
Income Tax Disclosure [Abstract]	'
Schedule Of Income (Loss) Before Income Taxes	'
	Income from continuing operations, before income taxes consists of the following:
	(In millions)	2013			2012			2011
	Domestic	$	105.2		$	46.2		$	120.2
	Foreign	45.8			37.1			48.7
	Income from continuing operations, before income taxes	$	151		$	83.3		$	168.9
Summary Of Income Tax (Expense) Benefit	'
	A summary of income tax expense from continuing operations is as follows:
	(In millions)	2013			2012			2011
	Current:
	Federal	$	(17.4	)	$	(1.7	)	$	3.1
	State	(2.8		)	(0.9		)	(1.2		)
	Foreign	(23.3		)	(14.7		)	(14.1		)
	Total current	$	(43.5	)	$	(17.3	)	$	(12.2	)
	Deferred:
	Federal	$	(12.9	)	$	(15.8	)	$	(18.8	)
	State	(1.8		)	0.1			13.9
	Foreign	0.1			2.9			1.6
	Total deferred	$	(14.6	)	$	(12.8	)	$	(3.3	)
	Total income tax expense	$	(58.1	)	$	(30.1	)	(15.5		)
Difference Between Effective Income Tax Rate And U.S. Statutory Rate	'
	(In millions)	2013			2012			2011
	Income tax expense at 35% of income from continuing operations, before income taxes	$	(52.8	)	$	(29.2	)	$	(59.1	)
	State tax, net of federal benefit	(3.9		)	(1.3		)	(2.2		)
	Differences in rates of foreign operations	(1.2		)	3.3			3.9
	Changes in valuation allowances	(3.1		)	(0.9		)	13
	U.S. research and development credit	2.1			—			0.6
	Tax benefits associated with O’Sullivan Engineered Films	—			—			29.5
	Recognition of uncertain tax positions	0.5			0.1			(4.5		)
	Other, net	0.3			(2.1		)	3.3
	Income tax expense	$	(58.1	)	$	(30.1	)	$	(15.5	)
Components Of Deferred Tax Liabilities And Assets	'
	Components of our deferred tax liabilities and assets as of December 31, 2013 and 2012 were as follows:
	(In millions)	2013			2012
	Deferred tax liabilities:
	Tax over book depreciation	$	87.1		$	39.1
	Intangibles	126.1			98.8
	Other, net	19.9			9.2
	Total deferred tax liabilities	$	233.1		$	147.1
	Deferred tax assets:
	Pension and other Post-retirement benefits	$	20.6		$	64.7
	Employment costs	36.8			23.4
	Environmental	49.3			27.9
	Net operating loss carryforwards	38			31.2
	Other, net	32.6			10.4
	Total deferred tax assets	$	177.3		$	157.6
	Valuation allowances	(29.3		)	(18.9		)
	Net deferred tax liabilities	$	(85.1	)	$	(8.4	)
Changes In Unrecognized Tax Benefits	'
	A reconciliation of unrecognized tax benefits is as follows:
		Unrecognized Tax Benefits
	(In millions)	2013			2012			2011
	Balance as of January 1	$	14.5		$	15.1		$	9.9
	Additions based on tax positions related to the current year	—			0.2			4.5
	Additions for tax positions of prior years	1.1			—			1.3
	Reductions for tax positions of prior years	(0.9		)	(0.4		)	(0.6		)
	Settlements and other	0.5			(0.4		)	—
	Balance as of December 31	$	15.2		$	14.5		$	15.1

ShareBased_Compensation_Tables

Share-Based Compensation (Tables)	12 Months Ended
	Dec. 31, 2013
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]	'
Summary Of Compensation Expense	'
	Share-based compensation is included in Selling and administrative expense in the accompanying Consolidated Statements of Income. A summary of compensation expense by type of award follows:
	(In millions)	2013				2012			2011
	Stock appreciation rights	$	6.1			$	5.1		$	2.3
	Restricted stock units	10.4				5.3			3.1
	Total share-based compensation	$	16.5			$	10.4		$	5.4
Summary Of Assumptions Related To Grants	'
	The following is a summary of the weighted average assumptions related to the grants issued during 2013, 2012 and 2011:
		2013		2012		2011
	Expected volatility (weighted-average)	50.00%		53.00%		56.00%
	Expected dividends	1.04%		1.37%		—%
	Expected term (in years)	7.4		8		6
	Risk-free rate	2.12%		2.05%		2.86%
	Value of SARs granted	$10.83		$6.92		$8.12
Summary Of Stock Appreciation Rights	'
	A summary of SAR activity for 2013 is presented below:
	Stock Appreciation Rights	Shares			Weighted-Average			Weighted-Average			Aggregate
					Exercise Price			Remaining			Intrinsic
					Per Share			Contractual Term			Value
	In millions, except per share data)
	Outstanding as of January 1, 2013	2.1			$	11.31		6.58			$	19.2
	Granted	0.5			23.08			—
	Spartech Replacement award issuance	0.5			25.05			—
	Exercised	(0.9	)		11.49			—
	Forfeited or expired	(0.1	)		18.05			—
	Outstanding as of December 31, 2013	2.1			$	16.63		6.33			$	39.3
	Vested and exercisable as of December 31, 2013	1			$	14.94		3.99			$	20.6

Segment_Information_Tables

Segment Information (Tables)	12 Months Ended
	Dec. 31, 2013
Segment Reporting [Abstract]	'
Schedule of Segment Reporting Information, by Segment [Table Text Block]	'
	Financial information by reportable segment is as follows:
	Year Ended December 31, 2013	Sales to		Intersegment			Total Sales			Operating			Depreciation and		Capital		Total
	(In millions)	External		Sales						Income			Amortization (1)		Expenditures (1a)		Assets
		Customers
	Global Specialty Engineered Materials	$	571.9	$	43.6		$	615.5		$	57.2		$	18.8	$	14.3	$	379.6
	Global Color, Additives and Inks	844.6		7.7			852.3			104			38.8		29.3		962
	Designed Structures and Solutions	597.3		0.1			597.4			33.4			21.2		13.4		549.4
	Performance Products and Solutions	690.9		82.3			773.2			56			15.5		12.4		278.7
	PolyOne Distribution	1,066.50		8.7			1,075.20			63.3			0.6		0.3		216.7
	Corporate and eliminations	—		(142.4		)	(142.4		)	(82.4		)	13.9		6.5		557.7
	Total	$	3,771.20	$	—		$	3,771.20		$	231.5		$	108.8	$	76.2	$	2,944.10
	(1) Excludes $1.0 million of depreciation expense associated with the Resin Business.
	(1a) Excludes$0.2 million of capital expenditures associated with the Resin Business.
	Year Ended December 31, 2012	Sales to		Intersegment			Total Sales			Operating			Depreciation and		Capital		Total
	(In millions)	External		Sales						Income			Amortization (2)		Expenditures (2a)		Assets
		Customers
	Global Specialty Engineered Materials	$	504.9	$	38.7		$	543.6		$	47		$	14.3	$	12.9	$	396.6
	Global Color, Additives and Inks	776.1		2.1			778.2			75.3			32.9		28.2		901.7
	Performance Products and Solutions	554.9		75.4			630.3			38.8			13.7		4.6		205.4
	PolyOne Distribution	1,024.90		5.4			1,030.30			66			0.7		0.6		212.9
	Corporate and eliminations	—		(121.6		)	(121.6		)	(89.6		)	4.2		8.5		411.4
	Total	$	2,860.80	$	—		$	2,860.80		$	137.5		$	65.8	$	54.8	$	2,128.00
	(2) Excludes $4.0 million of depreciation expense associated with the Resin Business.
	(2a) Excludes $2.6 million of capital expenditures associated with the Resin Business.
	Year Ended December 31, 2011	Sales to		Intersegment			Total Sales			Operating			Depreciation and		Capital		Total
	(In millions)	External		Sales						Income			Amortization (3)		Expenditures (3a)		Assets
		Customers
	Global Specialty Engineered Materials	$	540.2	$	34.9		$	575.1		$	45.9		$	14.8	$	9.2	$	349.7
	Global Color, Additives and Inks	615		2.7			617.7			50.2			19.6		14.9		927.1
	Performance Products and Solutions	562.1		77			639.1			27.7			15		12.7		222.5
	PolyOne Distribution	992.1		4.4			996.5			56			0.7		0.2		183.5
	Corporate and eliminations	—		(119.0		)	(119.0		)	23.2			3.1		13.4		395.3
	Total	$	2,709.40	$	—		$	2,709.40		$	203		$	53.2	$	50.4	$	2,078.10
	(3) Excludes $4.3 million of depreciation expense associated with the Resin Business.
	(3a) Excludes $3.7 million of capital expenditures associated with the Resin Business.
Schedule Of Earnings Of Equity Affiliates In The Related Segments [Table Text Block]	'
	Amounts related to equity affiliates were $26.9 million, $23.4 million and $152.0 million for 2013, 2012 and 2011, respectively.
Schedule Of Revenue And Long-Lived Assets	'
	Following is a summary of sales and long-lived assets based on the geographic areas where the sales originated and where the assets are located:
	(In millions)	2013		2012			2011
	Net sales:
	United States	$	2,538.20	$	1,724.10		$	1,628.30
	Europe	519.7		488.1			491.3
	Canada	267.8		248.1			248.7
	Asia	239		221.2			196.3
	Mexico	158.1		141.8			102.6
	South America	48.4		37.5			42.2
	Long-lived assets:
	United States	$	444.4	$	240.9		$	235.2
	Europe	103		82.2			86.9
	Canada	13.2		5.7			5.9
	Asia	51.8		45.1			39.3
	Mexico	20.5		3.5			2.7
	South America	13.3		8.4			4.6

Common_Share_Data_Tables

Common Share Data (Tables)	12 Months Ended
	Dec. 31, 2013
Earnings Per Share [Abstract]	'
Schedule of Weighted Average Number of Shares	'
	Weighted-average shares used in computing net income per share are as follows:
	(In millions)	2013	2012	2011
	Weighted-average shares — basic:	95.5	89.1	92.2
	Plus dilutive impact of stock options and share-based awards	1	0.7	2.1
	Weighted-average shares — diluted:	96.5	89.8	94.3

Derivative_Instruments_Tables

Derivative Instruments (Tables)	12 Months Ended
	Dec. 31, 2013
Derivatives, Fair Value [Line Items]	'
Derivatives and Fair Value [Text Block]	'
	The fair values of derivative financial instruments recorded in the Consolidated Balance Sheets are as follows:
		December 31, 2013
	(In millions)	Notional			Other current assets
	Foreign currency forwards	$	12.8		$	—
		December 31, 2012
	(In millions)	Notional			Other current assets
	Foreign currency options	$	31.2		$	0.6
	Foreign currency forwards	13.8			—
	Total				$	0.6
Schedule of Derivative Instruments, Gain (Loss) in Statement of Financial Performance	'
	The effects of derivative instruments on our Consolidated Statements of Income are as follows:
	(In millions)	2013			2012			2011			Location
	Foreign currency options - (losses)	$	(0.4	)	$	(1.4	)	$	—		Selling and administrative expense
	Foreign currency forwards - (losses)	(0.6		)	(0.4		)	(1.8		)	Other (expense) income, net

Fair_Value_Fair_Value_Tables

Fair Value Fair Value (Tables)	12 Months Ended
	Dec. 31, 2013
Fair Value Disclosures [Abstract]	'
Fair Value, by Balance Sheet Grouping	'
	Financial instruments accounted for at fair value on a recurring basis as of December 31, 2013 and 2012 are as follows:
		December 31, 2013
	(In millions)	Total		Quoted prices		Other		Unobservable
				in active		observable		inputs
				markets for		inputs		(Level 3)
				identical assets		(Level 2)
				(Level 1)
	Cash and cash equivalents	$	365.2	$	365.2	$	—	$	—
		December 31, 2012
	(In millions)	Total		Quoted prices		Other		Unobservable
				in active		observable		inputs
				markets for		inputs		(Level 3)
				identical assets		(Level 2)
				(Level 1)
	Cash and cash equivalents	$	210	$	210	$	—	$	—
	Foreign currency options	0.6		—		0.6		—

Selected_Quarterly_Financial_D

Selected Quarterly Financial Data (Tables)	12 Months Ended
	Dec. 31, 2013
Selected Quarterly Financial Information [Abstract]	'
Schedule Of Quarterly Financial Data	'
			2013 Quarters								2012 Quarters
	(In millions, except per share data)		Fourth (2)		Third (3)		Second (4)		First (5)		Fourth (6)		Third (7)		Second (8)		First (9)
	Sales		$	923.6	$	1,008.90	$	1,037.60	$	801.1	$	651	$	707.7	$	756.6	$	745.5
	Gross Margin		114.9		181.3		203.7		162.3		119.7		135.1		144		132.3
	Operating income		48.7		61.6		80.7		40.5		13.3		43.5		43.3		37.4
	Net income from continuing operations		20.6		23		38.3		11		0.1		19.4		18.4		15.3
	Net income from continuing operations attributable to PolyOne shareholders		$	21	$	23.2	$	38.6	$	11.2	$	0.2	$	19.4	$	18.4	$	15.3
	Net income from continuing operations per common share attributable to PolyOne common shareholders: (1)
	Basic net income - continuing operations		$	0.22	$	0.24	$	0.39	$	0.12	$	—	$	0.22	$	0.21	$	0.17
	Diluted net income - continuing operations		$	0.22	$	0.24	$	0.39	$	0.12	$	—	$	0.22	$	0.2	$	0.17
	-1	Per share amounts for the quarter and the full year have been computed separately. The sum of the quarterly amounts may not equal the annual amounts presented because of differences in the average shares outstanding during each period.
	-2	Included for the fourth quarter 2013 are: 1) gains from the SunBelt earn-out of $26.8 million, 2) mark-to-market pension and other post-retirement benefit gains of $44.0 million, 3) environmental remediation costs of $52.6 million, 4) a gain related to the reimbursement of previously incurred environmental costs of $3.4 million and 5) employee separation and plant phase-out costs of $28.3 million.
	-3	Included for the third quarter 2013 are: 1) $5.3 million in environmental remediation costs, 2) $10.9 million in employee separation and plant phase-out costs, 3) $7.0 million gain on commercial litigation, 4) $5.2 million in debt extinguishment costs associated with our outstanding debt repurchases and 5) $1.2 million of acquisition and divestiture-related costs.
	-4	Included for the second quarter 2013 are: 1) pre-tax gain of $223.7 million related to the sale of the Resin Business, 2) $2.9 million in employee separation and plant phase-out costs, 3) acquisition and divestiture-related costs of $4.9 million, 4) environmental remediation costs of $1.3 million and 5) a gain related to the reimbursement of previously incurred environmental costs of $14.9 million.
	-5	Included for the first quarter 2013 are: 1) $9.9 million in employee separation and plant phase-out costs 2) acquisition and divestiture-related costs of $8.7 million, 3) environmental remediation costs of $2.0 million, 4) a gain related to the reimbursement of previously incurred environmental costs of $5.2 million and 5) $10.6 million in debt extinguishment costs related to the early retirement of our senior secured term loan.
	-6	Included for the fourth quarter 2012 are: 1) gains from the SunBelt earn-out of $23.0 million, 2) mark-to-market pension and other post-retirement benefit losses of $42.0 million, 3) environmental remediation costs of $3.1 million, 4) acquisition-related costs of $2.0 million, 5) bridge loan commitment fees of $1.3 million and 6) employee separation and plant phase-out costs of $1.0 million.
	-7	Included for the third quarter 2012 are: 1) $5.2 million in environmental remediation costs and 2) $1.3 million in employee separation and plant phaseout costs.
	-8	Included for the second quarter 2012 are: 1) $8.7 million in employee separation and plant phase-out costs and 2) environmental remediation costs of $2.9 million.
	-9	Included for the first quarter 2012 are: 1) $5.4 million related to expensing the fair market value of acquired ColorMatrix inventory and 2) environmental remediation costs of $1.6 million.

Description_Of_Business_And_Su3

Description Of Business And Summary Of Significant Accounting Policies (Narrative) (Details) (USD $)	12 Months Ended								0 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2013	Dec. 31, 2013	Dec. 31, 2013	Dec. 31, 2013	Dec. 31, 2013	30-May-13
	segment			Maximum	Maximum	Maximum	Maximum	Minimum	Resin Business [Member]
					Machinery and equipment	Computer Software	Buildings	Machinery and equipment
Accounting Policies [Line Items]	'	'	'	'	'	'	'	'	'
Number of reportable segments	5	'	'	'	'	'	'	'	'
Proceeds from Divestiture of Businesses	'	'	'	'	'	'	'	'	$250
Gain on sale	223.7	0	0	'	'	'	'	'	223.7
Maximum Ownership Percentage for Equity Method Investment	'	'	'	50.00%	'	'	'	'	'
Property and equipment useful lives	'	'	'	'	'15 years	'10 years	'40 years	'3 years	'
Finite-lived intangible asset useful life	'	'	'	'23 years	'	'	'	'	'
Research and development costs	52.6	41.3	36.4	'	'	'	'	'	'
Discontinued Operation, Gain (Loss) on Disposal of Discontinued Operation, Net of Tax	'	'	'	'	'	'	'	'	$138.50

Description_Of_Business_And_Su4

Description Of Business And Summary Of Significant Accounting Policies (Accumulated Other Comprehensive Loss) (Details) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Changes in Accumulated Other Comprehensive Income (Loss) [Roll Forward]	'	'	'	'
Cumulative Translation Adjustment, balance at beginning of period	($16.50)	($17.60)	($8.60)	'
Translation adjustments	-3.7	1.1	-9	'
Cumulative Translation Adjustment, Balance at end of period	-20.2	-16.5	-17.6	'
Pension and other post-retirement benefits, Balance at beginning of period	5.2	16.1	26.9	'
Amortization of prior service credits, net of tax of $6.5 - 2012 and $6.5 - 2011	0	-10.9	-10.8	'
Pension and other post-retirement benefits, Balance at end of period	5.2	5.2	16.1	'
Unrealized gain in available-for-sale securities, Balance at beginning of period	0.2	0.2	0.2	'
Unrealized gain in available-for-sale securities, Balance at end of period	0.2	0.2	0.2	'
Total, Balance at beginning of period	-14.8	-11.1	-1.3	18.5
Total, Balance at end of period	-14.8	-11.1	-1.3	18.5
Amortization of prior service costs tax	$0	$6.50	$6.50	'

Business_Combinations_Narrativ

Business Combinations (Narrative) (Details) (USD $)

0 Months Ended

3 Months Ended

12 Months Ended

0 Months Ended

12 Months Ended

0 Months Ended

0 Months Ended

3 Months Ended

10 Months Ended

0 Months Ended

12 Months Ended

0 Months Ended

12 Months Ended

In Millions, except Share data, unless otherwise specified

Dec. 21, 2011

Dec. 31, 2013

Sep. 30, 2013

Jun. 30, 2013

Mar. 31, 2013

Dec. 31, 2012

Sep. 30, 2012

Jun. 30, 2012

Mar. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Oct. 07, 2011

Dec. 31, 2013

Dec. 31, 2012

Feb. 28, 2013

Dec. 31, 2013

Mar. 13, 2013

Mar. 31, 2013

Dec. 31, 2013

Mar. 13, 2013

Dec. 19, 2012

Dec. 31, 2012

Dec. 21, 2011

Dec. 31, 2012

Dec. 31, 2012

E.A. Juffali & Brothers Company Limited

Selling and administrative expense

Selling and administrative expense

Senior Notes

Senior Notes

Spartech Corporation

Spartech Corporation

Spartech Corporation

Spartech Corporation

Glasforms, Inc.

Glasforms, Inc.

ColorMatrix

ColorMatrix

ColorMatrix

Senior Notes Due March 2023

Senior Notes Due March 2023

Senior Notes

Selling and administrative expense

Term Loan

Senior Notes Due 2016

Business Acquisition [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Revenue reported by acquired entity for last annual period

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

$1,149.40

'

'

'

'

'

'

'

'

Net income from continuing operations by acquired entity for last annual period

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

2.7

'

'

'

'

'

'

'

Cash consideration transferred for each common share

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

$2.67

'

'

'

'

'

'

'

'

Exchange ratio

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

0.3167

'

'

'

'

'

'

'

'

Cash consideration transferred to shareholders

486.1

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

83.4

'

'

'

'

'

'

'

'

PolyOne shares issued

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

10,000,000

'

'

'

'

'

'

'

'

Debt Instrument, Interest Rate During Period

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

5.25%

'

'

'

'

'

'

'

'

'

'

Stated interest rate

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

5.25%

'

'

'

7.08%

'

'

'

'

'

Sales since date of acquisition

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

822.7

'

'

'

'

'

'

Fair value of Spartech equity awards, net of deferred tax benefits

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

2.4

[1]

'

'

'

'

'

'

'

'

Fair value Of equity awards before deferred tax benefits

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

3.9

'

'

'

'

'

'

'

'

Deferred tax benefit

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

1.5

'

'

'

'

'

'

'

'

Vested in period, total fair value

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

2.7

'

'

'

'

'

'

'

'

Spartech revolving credit facilities repaid at close

'

'

'

'

'

'

'

'

'

-117.5

0

0

'

'

'

'

'

77.2

[2]

'

'

'

'

'

'

'

'

Spartech senior notes repaid at close

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

102.3

[2]

'

'

'

'

'

'

'

'

Principal repayments of senior notes of business acquisition

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

88.9

'

'

'

'

'

'

'

'

Make whole costs

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

10.3

'

'

'

'

'

'

'

'

Interest payable

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

3.1

'

'

'

'

'

'

'

'

Acquisition costs related to this acquisition

'

'

1.2

4.9

8.7

2

'

'

'

'

'

'

'

7.6

3.9

'

'

'

'

'

'

'

'

'

3.3

'

Sales

'

923.6

1,008.90

1,037.60

801.1

651

707.7

756.6

745.5

3,771.20

2,860.80

2,709.40

'

'

'

'

'

'

'

'

'

'

51.1

'

'

'

Consideration transferred

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

515.2

'

'

'

34.3

'

'

'

'

Cash acquired

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

4.1

'

'

'

1.2

'

1.9

'

'

Goodwill

'

559

'

'

'

405.5

'

'

'

559

405.5

395.5

'

'

'

'

'

'

'

153.2

'

12.4

'

'

'

'

Identifiable intangible assets

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

10.7

'

'

'

'

Net proceeds from senior secured term loan

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

$285.50

Percentage of ownership

'

'

'

'

'

'

'

'

'

'

'

'

51.00%

'

'

'

'

'

'

'

'

'

'

'

'

'

[1]

In accordance with ASC 718, Compensation — Stock Compensation, the fair value of replacement awards attributable to pre-combination service is recognized as part of purchase consideration. The $2.4 million represents the fair value of Spartech replacement equity awards of $3.9 million net of deferred income tax benefits of $1.5 million. The fair value of awards attributable to post-combination service amounted to $2.7 million and are being recognized as stock compensation over their requisite service periods within PolyOne's Consolidated Statements of Income.

[2]

In accordance with the provisions of Spartech's 7.08% senior notes due 2016 and revolving credit facilities, at the time of closing, PolyOne repaid all borrowings under Spartech's revolving credit facilities, which amounted to $77.2 million. Additionally, PolyOne repaid $102.3 million related to Spartech's 7.08% senior notes due 2016, including $88.9 million of aggregated principal, $10.3 million make-whole provisions, and $3.1 million of interest payable.

Business_Combination_Purchase_

Business Combination (Purchase Price Allocation (Details) (USD $)	0 Months Ended	12 Months Ended			0 Months Ended
In Millions, except Share data, unless otherwise specified	Dec. 21, 2011	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Mar. 13, 2013		Mar. 13, 2013
					Spartech Corporation		Spartech Corporation
							Restricted stock units
Business Acquisition [Line Items]	'	'	'	'	'		'
Spartech shares outstanding	'	'	'	'	31,200,000		'
Spartech restricted stock units	'	'	'	'	'		200,000
Spartech shares converted	'	'	'	'	31,400,000		'
Exchange ratio	'	'	'	'	0.3167		'
PolyOne shares issued	'	'	'	'	10,000,000		'
PolyOne closing stock price on March 13, 2013	'	'	'	'	$25.05		'
Total value of PolyOne shares issued	'	'	'	'	$249.90		'
Cash consideration transferred to shareholders	486.1	'	'	'	83.4		'
Fair value of Spartech equity awards, net of deferred tax benefits	'	'	'	'	2.4	[1]	'
Total consideration transferred to Spartech equity holders	'	'	'	'	335.7		'
Spartech revolving credit facilities repaid at close	'	-117.5	0	0	77.2	[2]	'
Spartech senior notes repaid at close	'	'	'	'	102.3	[2]	'
Total consideration transferred to debt and equity holders	'	'	'	'	515.2		'
Cash acquired	'	'	'	'	-4.1		'
Total consideration transferred to debt and equity holders, net of cash acquired	'	$259.40	$33.80	$508.40	$511.10		'
[1]	In accordance with ASC 718, Compensation — Stock Compensation, the fair value of replacement awards attributable to pre-combination service is recognized as part of purchase consideration. The $2.4 million represents the fair value of Spartech replacement equity awards of $3.9 million net of deferred income tax benefits of $1.5 million. The fair value of awards attributable to post-combination service amounted to $2.7 million and are being recognized as stock compensation over their requisite service periods within PolyOne's Consolidated Statements of Income.
[2]	In accordance with the provisions of Spartech's 7.08% senior notes due 2016 and revolving credit facilities, at the time of closing, PolyOne repaid all borrowings under Spartech's revolving credit facilities, which amounted to $77.2 million. Additionally, PolyOne repaid $102.3 million related to Spartech's 7.08% senior notes due 2016, including $88.9 million of aggregated principal, $10.3 million make-whole provisions, and $3.1 million of interest payable.

Business_Combinations_Prelimin

Business Combinations (Preliminary Allocation Of Purchase Price) (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
In Millions, unless otherwise specified
Business Acquisition [Line Items]	'	'	'
Goodwill	$559	$405.50	$395.50
Spartech Corporation	'	'	'
Business Acquisition [Line Items]	'	'	'
Accounts receivable, net	139.7	'	'
Inventories, net	118.1	'	'
Other current assets	17.2	'	'
Property, net	280.3	'	'
Other non-current assets	20.4	'	'
Intangible assets, net	44.6	'	'
Goodwill	153.2	'	'
Total assets acquired	773.5	'	'
Short-term and current portion of long-term debt	0.5	'	'
Accounts payable	105.3	'	'
Accrued expenses	43.2	'	'
Long-term debt	11	'	'
Other non-current liabilities	102.4	'	'
Total liabilities assumed	262.4	'	'
Net assets acquired	$511.10	'	'

Business_Combinations_Pro_Form

Business Combinations - Pro Forma (Details) (Spartech Corporation, USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Spartech Corporation	'	'
Business Acquisition [Line Items]	'	'
Sales	$3,989.20	$4,006.90
Net income from continuing operations	$94.70	$56.50

Discontinued_Operations_Detail

Discontinued Operations (Details) (USD $)	12 Months Ended			0 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	30-May-13
				Resin Business [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]	'	'	'	'
Proceeds from Divestiture of Businesses	'	'	'	$250
Discontinued Operation, Gain (Loss) on Disposal of Discontinued Operation, Net of Tax	'	'	'	138.5
Disposal Group, Including Discontinued Operation, Income Statement Disclosures [Abstract]	'	'	'	'
Sales	55.3	131.8	154.1	'
Gain on sale	223.7	0	0	223.7
Income from operations	12.2	29.7	29.8	'
Income before taxes	235.9	29.7	29.8	'
Income tax expense	-86.1	-11.1	-10.6	'
Income from discontinued operations, net of income taxes	149.8	18.6	19.2	'
Assets:	'	'	'	'
Accounts receivable, net	'	8.8	'	'
Inventories, net	'	8.2	'	'
Property, net	'	21.7	'	'
Other assets	'	0.6	'	'
Assets held-for-sale	'	39.3	'	'
Liabilities:	'	'	'	'
Accounts payable	'	15.8	'	'
Accrued expenses and other liabilities	'	2.2	'	'
Liabilities held-for-sale	'	$18	'	'

Employee_Separation_and_Plant_2

Employee Separation and Plant Phase-Out Costs Employee Separation and Plant Phase-Out Costs Narrative (Details) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Restructuring Cost and Reserve [Line Items]	'	'	'
Restructuring and Related Cost, Accelerated Depreciation	'	$12.70	'
Restructuring and Related Cost, Expected Cost	65	'	'
Restructuring charges	'	52	11.5
Payments for Restructuring	'	-6	'
Severance Costs	'	21.1	0
Other Restructuring Costs	'	9.4	0
Restructuring Reserve	'	15.1	'
Spartech Corporation [Member]	'	'	'
Restructuring Cost and Reserve [Line Items]	'	'	'
Restructuring and Related Cost, Expected Cost	20.9	'	'
Restructuring charges	'	44.1	0
Payments for Restructuring	'	-15.4	'
Restructuring Charges [Member]	'	'	'
Restructuring Cost and Reserve [Line Items]	'	'	'
Restructuring Reserve, Settled without Cash	'	-13.6	'
Other Restructuring [Member]	'	'	'
Restructuring Cost and Reserve [Line Items]	'	'	'
Restructuring charges	'	7.9	'
Payments for Restructuring	'	-9.4	'
Cost of Goods, Total [Member]	'	'	'
Restructuring Cost and Reserve [Line Items]	'	'	'
Restructuring and Related Cost, Expected Cost	24	'	'
Cost of Sales [Member]	'	'	'
Restructuring Cost and Reserve [Line Items]	'	'	'
Restructuring and Related Cost, Accelerated Depreciation	'	16.1	'
Selling and administrative expense	'	'	'
Restructuring Cost and Reserve [Line Items]	'	'	'
Restructuring charges	'	35.9	'
Restructuring Plan [Domain]	'	'	'
Restructuring Cost and Reserve [Line Items]	'	'	'
Restructuring and Related Cost, Accelerated Depreciation	'	13.6	0
Other Restructuring [Member]	'	'	'
Restructuring Cost and Reserve [Line Items]	'	'	'
Restructuring and Related Cost, Expected Cost	14	'	'
Employee Severance [Member]	'	'	'
Restructuring Cost and Reserve [Line Items]	'	'	'
Restructuring and Related Cost, Expected Cost	$27	'	'

Goodwill_And_Intangible_Assets2

Goodwill And Intangible Assets (Narrative) (Details) (USD $)	12 Months Ended					12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2013	Dec. 19, 2012	Dec. 31, 2013	Dec. 31, 2013	Dec. 31, 2013	Dec. 31, 2013
	project			Spartech Corporation [Member]	Glasforms, Inc.	ColorMatrix	GLS Corporation	Finite-Intangible Asset Useful Life [Member]	Finite-Intangible Useful Lifes [Member]
Goodwill and Intangible Assets [Line Items]	'	'	'	'	'	'	'	'	'
Goodwill	$559	$405.50	$395.50	$153.20	$12.40	'	'	'	'
Finite-Lived Intangible Asset, Useful Life	'	'	'	'	'	'	'	'7 years	'20 years
Indefinite-lived other intangible assets	99.7	'	'	'	'	'	'	'	'
Trade names acquired	'	'	'	'	'	63.1	33.2	'	'
In-process R&D acquired	'	'	'	'	'	3.4	'	'	'
Number of R&D in process projects	1	'	'	'	'	'	'	'	'
Amortization of other finite-lived intangible assets	$17.80	$13.20	$3.80	'	'	'	'	'	'

Goodwill_And_Intangible_Assets3

Goodwill And Intangible Assets (Goodwill By Operating Segment) (Details) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Goodwill [Roll Forward]	'	'	'
Goodwill, gross at January 1, 2012	'	'	$598.80
Goodwill, Impairment Loss	'	'	-203.3
Balance, beginning of period	405.5	395.5	'
Acquisitions of businesses	154.1	10.6	'
Currency translation and other adjustments	-0.6	-0.6	'
Balance, end of period	559	405.5	395.5
Global Specialty Engineered Materials	'	'	'
Goodwill [Roll Forward]	'	'	'
Goodwill, gross at January 1, 2012	'	'	101.4
Goodwill, Impairment Loss	'	'	-12.2
Balance, beginning of period	98.6	89.2	'
Acquisitions of businesses	1.8	10	'
Currency translation and other adjustments	-0.5	-0.6	'
Balance, end of period	99.9	98.6	89.2
Global Color, Additives and Inks	'	'	'
Goodwill [Roll Forward]	'	'	'
Goodwill, gross at January 1, 2012	'	'	313.4
Goodwill, Impairment Loss	'	'	-16.1
Balance, beginning of period	297.9	297.3	'
Acquisitions of businesses	12.4	0.6	'
Currency translation and other adjustments	-0.1	0	'
Balance, end of period	310.2	297.9	297.3
Designed Structures and Solutions [Member]	'	'	'
Goodwill [Roll Forward]	'	'	'
Goodwill, gross at January 1, 2012	'	'	0
Goodwill, Impairment Loss	'	'	0
Balance, beginning of period	0	0	'
Acquisitions of businesses	136.3	0	'
Currency translation and other adjustments	0	0	'
Balance, end of period	136.3	0	0
Performance Products and Solutions	'	'	'
Goodwill [Roll Forward]	'	'	'
Goodwill, gross at January 1, 2012	'	'	182.4
Goodwill, Impairment Loss	'	'	-175
Balance, beginning of period	7.4	7.4	'
Acquisitions of businesses	3.6	0	'
Currency translation and other adjustments	0	0	'
Balance, end of period	11	7.4	7.4
PolyOne Distribution	'	'	'
Goodwill [Roll Forward]	'	'	'
Goodwill, gross at January 1, 2012	'	'	1.6
Goodwill, Impairment Loss	'	'	0
Balance, beginning of period	1.6	1.6	'
Acquisitions of businesses	0	0	'
Currency translation and other adjustments	0	0	'
Balance, end of period	$1.60	$1.60	$1.60

Goodwill_And_Intangible_Assets4

Goodwill And Intangible Assets (Carrying Value And Accumulated Amortization Of Intangible Assets) (Details) (USD $)

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

In Millions, unless otherwise specified

Finite-Intangible Asset Useful Life [Member]

Customer relationships

Customer relationships

Sales contracts

Sales contracts

Patents, technology and other

Patents, technology and other

Indefinite-lived trade names

Indefinite-lived trade names

In-process research and development

In-process research and development

Finite-Intangible Useful Lifes [Member]

Other Intangible Assets [Member]

Finite-Lived Intangible Assets [Member]

Spartech Corporation

Finite-Lived Intangible Assets [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Finite-lived Intangible Assets Acquired

'

'

'

'

'

'

'

'

'

'

'

'

'

'

$27.30

$17.30

$44.60

Finite-Lived Intangible Asset, Useful Life

'

'

'7 years

'

'

'

'

'

'

'

'

'

'

'20 years

'

'

'

Acquisition Cost

430

386

'

190.4

173.1

11.4

11.4

128.5

89.3

96.3

96.3

3.4

15.9

'

'

'

'

Accumulated Amortization

-64.4

-46.6

'

-34.1

-25.7

-10.9

-10.8

-19.4

-10.1

0

0

0

0

'

'

'

'

Currency Translation

0.2

0.6

'

0.1

0.5

0

0

0.1

0.1

0

0

0

0

'

'

'

'

Net

$365.80

$340

'

$156.40

$147.90

$0.50

$0.60

$109.20

$79.30

$96.30

$96.30

$3.40

$15.90

'

'

'

'

Goodwill_And_Intangible_Assets5

Goodwill And Intangible Assets Schedule of Future Amortization (Details) (USD $)	Dec. 31, 2013
In Millions, unless otherwise specified
Goodwill and Intangible Assets Disclosure [Abstract]	'
2014	$18.50
2015	18.3
2016	18.3
2017	18.2
2018	$18.20

Financing_Arrangements_Narrati

Financing Arrangements (Narrative) (Details) (USD $)

3 Months Ended

12 Months Ended

0 Months Ended

1 Months Ended

0 Months Ended

12 Months Ended

0 Months Ended

12 Months Ended

0 Months Ended

In Millions, unless otherwise specified

Sep. 30, 2013

Mar. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Nov. 30, 2011

Dec. 31, 2013

Mar. 01, 2013

Dec. 31, 2011

Dec. 21, 2011

Dec. 31, 2013

Dec. 31, 2013

Nov. 04, 2013

Oct. 02, 2012

Nov. 30, 2011

Dec. 31, 2012

Feb. 28, 2013

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2013

Feb. 28, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Mar. 13, 2013

8.875% Senior Notes Due 2012

Other Debt [Member]

Revolving Credit Facility

Revolving Credit Facility

Revolving Credit Facility

Revolving Credit Facility

Saudi Hollandi Bank [Member]

Saudi Hollandi Bank [Member]

Saudi Hollandi Bank [Member]

8.875% Senior Notes Due 2012

Debentures Due December 2015

Senior secured term loan due 2017

Senior secured term loan due 2017

Senior secured term loan due 2017

Senior secured term loan due 2017

7.375% senior notes due 2020

7.375% senior notes due 2020

7.375% senior notes due 2020

senior notes due two thousand and fifteen [Member]

senior notes due two thousand and fifteen [Member]

Senior Notes Due March 2023

Senior Notes Due March 2023

Other assets

Debt extinguishment costs

Spartech Corporation

Various Banks

Senior Notes

Convertible Debt

Senior Notes

Minimum

Senior Notes

Senior Notes

Senior Notes

Senior Notes

Senior Notes

Line of Credit [Member]

Senior Secured Term

Debt Instrument [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Maximum borrowing capacity

'

'

'

'

'

'

'

'

$400

$300

$300

'

'

$16

$10.70

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Short-term Debt, Percentage Bearing Fixed Interest Rate

'

'

'

'

'

'

'

'

'

'

'

'

'

'

0.85%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Letters of Credit Outstanding, Amount

'

'

'

'

'

'

'

'

'

'

'

'

0.3

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Payments of Debt Extinguishment Costs

5.2

10.6

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

10.6

'

'

'

'

'

'

'

'

'

'

5.2

'

Line of credit term

'

'

'

'

'

'

'

'

'5 years

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Line of Credit Facility, Increase (Decrease), Other, Net

'

'

'

'

'

'

'

'

100

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Potential maximum borrowing capacity

'

'

'

'

'

'

'

'

450

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Amortization of financing costs

'

'

1.3

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Leverage Ratio Used to Determine Applicable Margin on Term Loan

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

225.00%

'

'

'

'

'

'

'

'

'

'

Current borrowing capacity

'

'

'

'

'

'

'

'

'

'

'

282.3

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Repayment of long-term debt instrument

'

'

'

-343.3

-3

-42.9

'

'

'

'

'

'

'

'

'

22.9

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Stated interest rate

'

'

'

'

'

'

8.88%

'

'

'

'

'

'

'

'

'

7.50%

'

'

'

'

'

7.38%

7.38%

'

7.50%

'

5.25%

'

'

'

Principal repayments of senior notes of business acquisition

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

88.9

Business Acquisition, Senior Note Repayment, Interest and Make Whole Costs

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

13.4

Company contributions

'

'

'

50

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Early Repayment of Senior Debt

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

297

'

'

'

'

'

'

'

'

'

'

'

'

102.3

[1]

Amortization of Debt Discount (Premium)

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

0.9

'

'

'

-2.5

'

'

'

'

'

'

'

'

'

'

'

Debt Instrument, Repurchase Amount

'

'

'

'

'

'

'

1.6

'

'

'

'

'

'

'

'

'

'

'

'

'

43.4

'

'

1.3

'

'

'

'

'

'

Proceeds from Long-term Debt

'

'

'

600

0

297

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

600

'

'

'

'

Debt financing related costs

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

13

'

'

Write-off of deferred note issuance costs

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

8.2

'

'

'

'

'

'

'

'

'

'

'

'

Write-off of Debt Discounts

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

2.4

'

'

'

'

'

'

'

'

'

'

'

'

Amount oustanding

'

'

'

'

'

'

'

'

'

'

'

'

12.3

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Line of Credit Facility, Interest Rate at Period End

'

'

'

'

'

'

'

'

'

'

'

'

1.85%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Interest income

'

'

'

1.3

0.8

0.7

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Total interest paid on long-term and short-term borrowings

'

'

'

$50.40

$45.80

$32

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

[1]

In accordance with the provisions of Spartech's 7.08% senior notes due 2016 and revolving credit facilities, at the time of closing, PolyOne repaid all borrowings under Spartech's revolving credit facilities, which amounted to $77.2 million. Additionally, PolyOne repaid $102.3 million related to Spartech's 7.08% senior notes due 2016, including $88.9 million of aggregated principal, $10.3 million make-whole provisions, and $3.1 million of interest payable.

Financing_Arrangements_Compone

Financing Arrangements (Components Of Long-Term Debt) (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Millions, unless otherwise specified
Debt Instrument [Line Items]	'	'
Total before unamortized discount	$988.90	$706.90
Less short-term and current portion of long-term debt	12.7	3.8
Total long-term debt, net of current portion	976.2	703.1
Other Debt	'	'
Debt Instrument [Line Items]	'	'
Total before unamortized discount	23.6	2.4
Senior Notes Due March 2023 | Senior Notes	'	'
Debt Instrument [Line Items]	'	'
Stated interest rate	5.25%	'
Debentures Due December 2015 | Convertible Debt	'	'
Debt Instrument [Line Items]	'	'
Total before unamortized discount	48.7	50
Stated interest rate	'	7.50%
Senior secured term loan due 2017 | Senior Secured Term	'	'
Debt Instrument [Line Items]	'	'
Total before unamortized discount	0	294.5
7.375% senior notes due 2020 | Senior Notes	'	'
Debt Instrument [Line Items]	'	'
Total before unamortized discount	316.6	360
Stated interest rate	7.38%	7.38%
Senior Notes Due September2023 [Member] [Member] | Senior Notes	'	'
Debt Instrument [Line Items]	'	'
Total before unamortized discount	$600	$0

LongTerm_Debt_Maturity_Schedul

Long-Term Debt Maturity Schedule (Details) (USD $)	Dec. 31, 2013
In Millions, unless otherwise specified
Debt Disclosure [Abstract]	'
2014	$12.70
2015	57.2
2016	0.5
2017	0.5
2018	0.6
Thereafter	917.4
Aggregate maturities	$988.90

Leasing_Arrangements_Details

Leasing Arrangements (Details) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Leases [Abstract]	'	'	'
Rent expense	$24.50	$20.20	$21.20
2014	18.7	'	'
2015	14.9	'	'
2016	10.8	'	'
2017	7.3	'	'
2018	5.7	'	'
Thereafter	19.3	'	'
Total	$76.70	'	'

Accounts_Receivable_Components

Accounts Receivable (Components Of Accounts Receivable) (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
In Millions, unless otherwise specified
Receivables [Abstract]	'	'	'	'
Trade accounts receivable	$433.20	$318.20	'	'
Allowance for doubtful accounts	-5.2	-4.3	-4.8	-4.1
Accounts receivable, net	$428	$313.90	'	'

Accounts_Receivable_Changes_In

Accounts Receivable (Changes In Allowance For Doubtful Accounts) (Details) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Allowance for Doubtful Accounts Receivable [Roll Forward]	'	'	'
Balance at beginning of the year	($4.30)	($4.80)	($4.10)
Provision for doubtful accounts from continuing operations	-0.2	-0.3	-2
Accounts written off	0.2	0.4	1
Currency translation and other adjustments	-0.9	0.4	0.3
Balance at end of year	($5.20)	($4.30)	($4.80)

Inventories_Components_Of_Inve

Inventories (Components Of Inventories) (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Millions, unless otherwise specified
At FIFO cost:	'	'
Finished products	$203.60	$165
Work in process	3.9	2.4
Raw materials and supplies	135	77
Inventories, net	$342.50	$244.40

Property_Details

Property (Details) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Property, Plant and Equipment [Line Items]	'	'	'
Property, gross	$1,447.10	$1,120.60	'
Less accumulated depreciation and amortization	-800.9	-734.8	'
Property, net	646.2	385.8	'
Depreciation expense	91	52.6	49.4
Restructuring and Related Cost, Accelerated Depreciation	12.7	'	'
Land and land improvements	'	'	'
Property, Plant and Equipment [Line Items]	'	'	'
Property, gross	52.5	34.7	'
Buildings	'	'	'
Property, Plant and Equipment [Line Items]	'	'	'
Property, gross	315.4	241.4	'
Machinery and equipment	'	'	'
Property, Plant and Equipment [Line Items]	'	'	'
Property, gross	$1,079.20	$844.50	'

Other_Balance_Sheet_Liabilitie2

Other Balance Sheet Liabilities (Components Of Other Liabilities) (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Millions, unless otherwise specified
Other Liabilities Disclosure [Abstract]	'	'
Accrued expenses and other liabilities, Employment costs	$128.70	$81.50
Accrued expenses and other liabilities, Environmental	12	10.8
Accrued expenses and other liabilities, Taxes	34.7	17.2
Accrued expenses and other liabilities, Pension and other post-employment benefits	5.7	5.9
Accrued expenses and other liabilities, Interest	16.2	8
Accrued expenses and other liabilities, Other	12	18.5
Accrued expenses and other liabilities, Total	209.3	141.9
Non-current liabilities, Employment costs	19.1	22.7
Non-current liabilities, Environmental	113.9	64.6
Non-current liabilities, Taxes	0	0
Non-current liabilities, Pension and other post-employment benefits	0	0
Non-current liabilities, Interest	0	0
Non-current liabilities, Other	36.4	14.8
Non-current liabilities, Total	$169.40	$102.10

Employee_Benefit_Plans_Narrati

Employee Benefit Plans (Narrative) (Details) (USD $)

3 Months Ended

12 Months Ended

12 Months Ended

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Dec. 31, 2014

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2014

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Dec. 31, 2014

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Alternative Investments

Debt Securities

Equity Securities [Member]

Large-cap equity

Mid-cap equity

Mid-cap equity

Small-cap equity

International equity

Pension Benefits

Pension Benefits

Pension Benefits

Pension Benefits

Health Care Benefits

Health Care Benefits

Health Care Benefits

Health Care Benefits

Minimum

Minimum

Maximum

Maximum

Minimum

Defined Benefit Plan Disclosure [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Defined Benefit Plan, Expected Return on Plan Assets

'

'

'

$0.07

'

'

'

'

'

'

'

'

'

$37,400,000

$27,600,000

$29,200,000

'

$0

$0

$0

Pre-tax actuarial (charge) gain

-44,000,000

42,000,000

-83,800,000

'

'

'

'

'

'

'

'

'

'

-43,000,000

44,000,000

83,400,000

'

-1,000,000

-2,000,000

400,000

Percentage of equity securities, minimum

'

'

'

'

0.00%

80.00%

20.00%

'

'

'

'

'

'

'

'

'

'

'

'

'

Percentage of equity securities, maximum

'

'

'

'

10.00%

70.00%

30.00%

'

'

'

'

'

'

'

'

'

'

'

'

'

Market capitalization

'

'

'

'

'

'

'

10,000,000,000

2,000,000,000

10,000,000,000

2,000,000,000

2,000,000,000

'

'

'

'

'

'

'

'

Employer contributions to defined benefit plans

'

'

'

'

'

'

'

'

'

'

'

'

$19,900,000

'

'

'

$1,700,000

'

'

'

Employee_Benefit_Plans_Change_

Employee Benefit Plans (Change In Benefit Obligation, Change In Plan Assets And Components Of Funded Status) (Details) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Change in plan assets:	'	'	'
Plan assets — beginning of year	$410.40	'	'
Company contributions	50	'	'
Plan assets — end of year	472.2	'	'
Pension Benefits	'	'	'
Change in benefit obligation:	'	'	'
Projected benefit obligation — beginning of year	597.2	543.5	'
Service cost	1.7	1.5	1.6
Interest cost	23.9	27.2	28.3
Actuarial (gain) loss	-35.5	63.4	'
Benefits paid	-51.5	-39.8	'
Other	1.2	1.4	'
Projected benefit obligation — end of year	537	597.2	543.5
Projected salary increases	2.8	2.8	'
Accumulated benefit obligation	534.2	594.4	'
Change in plan assets:	'	'	'
Plan assets — beginning of year	410.4	335.6	'
Actual return on plan assets	44.9	46.9	'
Company contributions	68	66.8	'
Plan participants’ contributions	0	0	'
Benefits paid	-51.5	-39.8	'
Other	0.4	0.9	'
Plan assets — end of year	472.2	410.4	335.6
Under-funded status at end of year	-64.8	-186.8	'
Health Care Benefits	'	'	'
Change in benefit obligation:	'	'	'
Projected benefit obligation — beginning of year	18.9	21.9	'
Service cost	0	0	0
Interest cost	0.6	0.8	1
Actuarial (gain) loss	-1	-2	'
Benefits paid	-2	-2.7	'
Other	-0.1	0.9	'
Projected benefit obligation — end of year	16.4	18.9	21.9
Projected salary increases	0	0	'
Accumulated benefit obligation	16.4	18.9	'
Change in plan assets:	'	'	'
Plan assets — beginning of year	0	0	'
Actual return on plan assets	0	0	'
Company contributions	1.8	2	'
Plan participants’ contributions	0.2	0.5	'
Benefits paid	-2	-2.7	'
Other	0	0.2	'
Plan assets — end of year	'	0	0
Under-funded status at end of year	($16.40)	($18.90)	'

Employee_Benefit_Plans_Amounts

Employee Benefit Plans (Amounts Included In Consolidated Balance Sheets) (Details) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Pension Benefits	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'
Non-current assets	$1.80	$0
Accrued expenses and other liabilities	4	4
Other non-current liabilities	62.6	182.8
Health Care Benefits	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'
Accrued expenses and other liabilities	1.7	1.9
Other non-current liabilities	$14.70	$17

Employee_Benefit_Plans_Change_1

Employee Benefit Plans (Change In AOCI) (Details) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Pension Benefits	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'
Prior year	$0.30	$0.30
Prior service credit recognized during year	0	0
Current year	0.3	0.3
Health Care Benefits	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'
Prior year	0	-17.4
Prior service credit recognized during year	0	17.4
Current year	$0	$0

Employee_Benefit_Plans_Schedul

Employee Benefit Plans (Schedule Of Projected And Accumulated Benefit Obligations In Excess Of Plan Assets) (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Millions, unless otherwise specified
Pension Benefits	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'
Projected benefit obligation	$528.50	$596.40
Accumulated benefit obligation	525.6	593.6
Fair value of plan assets	461.9	409.6
Health Care Benefits	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'
Projected benefit obligation	16.4	18.9
Accumulated benefit obligation	16.4	18.9
Fair value of plan assets	$0	$0

Employee_Benefit_Plans_Weighte

Employee Benefit Plans (Weighted Average Assumptions Used To Determine Benefit Obligation) (Details)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
Pension Benefits	'	'
Weighted-average assumptions used to determine benefit obligations at December 31:	'	'
Discount rate	4.83%	4.12%
Health Care Benefits	'	'
Weighted-average assumptions used to determine benefit obligations at December 31:	'	'
Discount rate	4.38%	3.71%
Benefit Obligation | Health Care Benefits	'	'
Assumed health care cost trend rates at December 31:	'	'
Health care cost trend rate assumed for next year	7.02%	7.39%
Rate to which the cost trend rate is assumed to decline (the ultimate trend rate)	4.50%	4.63%
Year that the rate reaches the ultimate trend rate	'2027	'2025

Employee_Benefit_Plans_Impact_

Employee Benefit Plans (Impact Of One Percentage Point Change In Assumed Health Care Cost Trend Rates) (Details) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013
Defined Benefit Pension Plans and Defined Benefit Postretirement Plans Disclosure [Abstract]	'
One Percentage Point Increase, Effect on total of service and interest cost	$0
One Percentage Point Decrease, Effect on total of service and interest cost	0
One Percentage Point Increase, Effect on post-retirement benefit obligation	1.1
One Percentage Point Decrease, Effect on post-retirement benefit obligation	($1)

Employee_Benefit_Plans_Compone

Employee Benefit Plans (Components Of Net Period Benefit Cost) (Details) (USD $)	3 Months Ended			12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
					Pension Benefits	Pension Benefits	Pension Benefits	Health Care Benefits	Health Care Benefits	Health Care Benefits
Defined Benefit Plan, Net Periodic Benefit Cost [Abstract]	'	'	'	'	'	'	'	'	'	'
Service cost	'	'	'	'	$1,700,000	$1,500,000	$1,600,000	$0	$0	$0
Interest cost	'	'	'	'	23,900,000	27,200,000	28,300,000	600,000	800,000	1,000,000
Expected return on plan assets	'	'	'	-0.0685	-37,400,000	-27,600,000	-29,200,000	0	0	0
Amortization of prior service cost	'	'	'	'	0	0	200,000	0	-17,400,000	-17,400,000
Mark-to-market actuarial net (gains) losses	44,000,000	-42,000,000	83,800,000	'	43,000,000	-44,000,000	-83,400,000	1,000,000	2,000,000	-400,000
Net periodic benefit (gain) cost	'	'	'	'	($54,800,000)	$45,100,000	$84,300,000	($400,000)	($18,600,000)	($16,000,000)

Employee_Benefit_Plans_Weighte1

Employee Benefit Plans (Weighted Average Assumptions Used To Determine Net Periodic Benefit Cost) (Details)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Pension Benefits	'	'	'
Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Net Periodic Benefit Cost [Abstract]	'	'	'
Discount rate	4.12%	5.11%	5.71%
Expected long-term return on plan assets	8.41%	8.43%	8.50%
Health Care Benefits	'	'	'
Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Net Periodic Benefit Cost [Abstract]	'	'	'
Discount rate	3.71%	4.66%	5.07%
Expected long-term return on plan assets	0.00%	0.00%	0.00%
Net Periodic Benefit Cost | Health Care Benefits	'	'	'
Assumed health care cost trend rates at December 31:	'	'	'
Health care cost trend rate assumed for next year	7.39%	8.35%	8.50%
Rate to which the cost trend rate is assumed to decline (the ultimate trend rate)	4.63%	5.00%	5.00%
Year that the rate reaches the ultimate trend rate	'2025	'2019	'2018

Employee_Benefit_Plans_Fair_Va

Employee Benefit Plans (Fair Values Of Pension Plan Assets) (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Millions, unless otherwise specified
Defined Benefit Plan Disclosure [Line Items]	'	'
Total plan assets	$472.20	$410.40
Cash	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'
Total plan assets	6.6	3.4
Common collective trusts	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'
Total plan assets	14.8	44.9
Large-cap equity	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'
Total plan assets	58.4	94.3
Mid-cap equity	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'
Total plan assets	0	42.3
Small-cap equity	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'
Total plan assets	22	39.8
International equity	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'
Total plan assets	59.6	80.6
Fixed-income funds	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'
Total plan assets	275.5	39.3
Multi-asset mutual fund	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'
Total plan assets	0	32.6
Floating rate income funds	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'
Total plan assets	35.3	33.2
Quoted Prices in Active Markets (Level 1)	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'
Total plan assets	427.4	314.4
Quoted Prices in Active Markets (Level 1) | Cash	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'
Total plan assets	6.6	3.4
Quoted Prices in Active Markets (Level 1) | Common collective trusts	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'
Total plan assets	0	0
Quoted Prices in Active Markets (Level 1) | Large-cap equity	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'
Total plan assets	28.4	43.2
Quoted Prices in Active Markets (Level 1) | Mid-cap equity	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'
Total plan assets	0	42.3
Quoted Prices in Active Markets (Level 1) | Small-cap equity	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'
Total plan assets	22	39.8
Quoted Prices in Active Markets (Level 1) | International equity	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'
Total plan assets	59.6	80.6
Quoted Prices in Active Markets (Level 1) | Fixed-income funds	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'
Total plan assets	275.5	39.3
Quoted Prices in Active Markets (Level 1) | Multi-asset mutual fund	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'
Total plan assets	0	32.6
Quoted Prices in Active Markets (Level 1) | Floating rate income funds	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'
Total plan assets	35.3	33.2
Significant Other Observable Inputs (Level 2)	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'
Total plan assets	44.8	96
Significant Other Observable Inputs (Level 2) | Cash	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'
Total plan assets	0	0
Significant Other Observable Inputs (Level 2) | Common collective trusts	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'
Total plan assets	14.8	44.9
Significant Other Observable Inputs (Level 2) | Large-cap equity	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'
Total plan assets	30	51.1
Significant Other Observable Inputs (Level 2) | Mid-cap equity	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'
Total plan assets	0	0
Significant Other Observable Inputs (Level 2) | Small-cap equity	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'
Total plan assets	0	0
Significant Other Observable Inputs (Level 2) | International equity	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'
Total plan assets	0	0
Significant Other Observable Inputs (Level 2) | Fixed-income funds	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'
Total plan assets	0	0
Significant Other Observable Inputs (Level 2) | Multi-asset mutual fund	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'
Total plan assets	0	0
Significant Other Observable Inputs (Level 2) | Floating rate income funds	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'
Total plan assets	0	0
Significant Unobservable Inputs (Level 3)	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'
Total plan assets	0	0
Significant Unobservable Inputs (Level 3) | Cash	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'
Total plan assets	0	0
Significant Unobservable Inputs (Level 3) | Common collective trusts	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'
Total plan assets	0	0
Significant Unobservable Inputs (Level 3) | Large-cap equity	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'
Total plan assets	0	0
Significant Unobservable Inputs (Level 3) | Mid-cap equity	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'
Total plan assets	0	0
Significant Unobservable Inputs (Level 3) | Small-cap equity	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'
Total plan assets	0	0
Significant Unobservable Inputs (Level 3) | International equity	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'
Total plan assets	0	0
Significant Unobservable Inputs (Level 3) | Fixed-income funds	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'
Total plan assets	0	0
Significant Unobservable Inputs (Level 3) | Multi-asset mutual fund	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'
Total plan assets	0	0
Significant Unobservable Inputs (Level 3) | Floating rate income funds	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'
Total plan assets	$0	$0

Employee_Benefit_Plans_Estimat

Employee Benefit Plans (Estimated Future Benefit Payments) (Details) (USD $)	Dec. 31, 2012
In Millions, unless otherwise specified
Pension Benefits	'
Defined Benefit Plan Disclosure [Line Items]	'
2014	$39.10
2015	40
2016	39.5
2017	39.5
2018	39.8
2019 through 2023	195.5
Health Care Benefits	'
Defined Benefit Plan Disclosure [Line Items]	'
2014	1.7
2015	1.6
2016	1.6
2017	1.5
2018	1.5
2019 through 2023	$6.20

Employee_Benefit_Plans_Schedul1

Employee Benefit Plans (Schedule Of Contributions To The Retirement Savings Plan) (Details) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Defined Benefit Pension Plans and Defined Benefit Postretirement Plans Disclosure [Abstract]	'	'	'
Retirement savings match	$9.80	$7.60	$7.10
Retirement benefit contribution	4	3.8	3.9
Total contributions	$13.80	$11.40	$11

Commitments_And_Contingencies_1

Commitments And Contingencies (Narrative) (Details) (USD $)	3 Months Ended		12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Sep. 30, 2013	Dec. 31, 2013	Dec. 31, 2011	Dec. 31, 2012	Dec. 31, 2010
Loss Contingencies [Line Items]	'	'	'	'	'	'
Other Increase (Decrease) in Environmental Liabilities	$47	'	'	'	'	'
Insurance Recoveries	'	'	23.5	3.3	'	'
Accrued probable future environmental expenditures	125.9	'	125.9	76.2	75.4	87.4
Proceeds from Legal Settlements	'	$7	$7	'	'	'

Commitments_And_Contingencies_2

Commitments And Contingencies (Schedule Of Changes In Environmental Accrued Liabilities) (Details) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Accrual for Environmental Loss Contingencies [Roll Forward]	'	'	'
Balance at beginning of the year	$75.40	$76.20	$87.40
Environmental expenses	61.2	12.8	9.7
Net cash payments	-14.3	-13.7	-20.8
Currency translation and other	3.6	0.1	-0.1
Balance at end of year	$125.90	$75.40	$76.20

Commitments_And_Contingencies_3

Commitments And Contingencies (Guarantees) (Details) (SunBelt, USD $)	1 Months Ended	12 Months Ended
In Millions, unless otherwise specified	Feb. 28, 2011	Dec. 31, 2013
SunBelt	'	'
Commitments And Related-Party Information [Line Items]	'	'
Percentage of equity interest sold	50.00%	'
Cash received from equity interest sold	$132.30	'
Aggregate principal amount of senior secured notes	42.7	'
Aggregate principal amount of senior secured notes	$42.70	$24.40

Income_Taxes_Narrative_Details

Income Taxes (Narrative) (Details) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Income Taxes [Line Items]	'	'	'	'
Federal tax rate	'	35.00%	'	'
Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued	'	$3	$2.30	'
Income Tax Expense (Benefit), Continuing Operations	'	58.1	30.1	15.5
Change in valuation allowances of deferred tax assets	'	'	'	-13
Valuation allowances against these loss carryforwards	'	23.1	'	'
Undistributed earnings of non-United States subsidiaries	'	286.5	'	'
Income tax payments	'	120.3	30.8	32.6
Income tax refunds	'	2.9	13	1
Unrecognized Tax Benefits, Reduction Resulting from Lapse of Applicable Statute of Limitations	3.8	'	'	'
Additions based on tax positions related to the current year	'	12.9	'	'
Combined State	'	'	'	'
Income Taxes [Line Items]	'	'	'	'
Net operating loss carryforwards	'	230.9	'	'
Foreign Subsidiaries	'	'	'	'
Income Taxes [Line Items]	'	'	'	'
Net operating loss carryforwards	'	$106.40	'	'

Income_Taxes_Schedule_Of_Incom

Income Taxes (Schedule Of Income (Loss) Before Income Taxes) (Details) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Income Tax Disclosure [Abstract]	'	'	'
Domestic	$105.20	$46.20	$120.20
Foreign	45.8	37.1	48.7
Income from continuing operations, before income taxes	$151	$83.30	$168.90

Income_Taxes_Summary_Of_Income

Income Taxes (Summary Of Income Tax (Expense) Benefit) (Details) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Current:	'	'	'
Federal	($17.40)	($1.70)	$3.10
State	-2.8	-0.9	-1.2
Foreign	-23.3	-14.7	-14.1
Total current	-43.5	-17.3	-12.2
Deferred:	'	'	'
Federal	-12.9	-15.8	-18.8
State	-1.8	0.1	13.9
Foreign	0.1	2.9	1.6
Deferred Income Expense from Continuing Operations	-14.6	-12.8	-3.3
Income tax expense	($58.10)	($30.10)	($15.50)

Income_Taxes_Difference_Betwee

Income Taxes (Difference Between Effective Income Tax Rate And U.S. Statutory Rate) (Details) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Income Tax Disclosure [Abstract]	'	'	'
Federal tax rate	35.00%	'	'
Income tax expense at 35% of income from continuing operations, before income taxes	($52.80)	($29.20)	($59.10)
State tax, net of federal benefit	-3.9	-1.3	-2.2
Differences in rates of foreign operations	-1.2	3.3	3.9
Changes in valuation allowances	-3.1	-0.9	13
U.S. research and development credit	-2.1	0	-0.6
Tax benefits associated with O’Sullivan Engineered Films	0	0	29.5
Recognition of uncertain tax positions	0.5	0.1	-4.5
Other, net	0.3	-2.1	3.3
Income tax expense	($58.10)	($30.10)	($15.50)

Income_Taxes_Components_Of_Def

Income Taxes (Components Of Deferred Tax Liabilities And Assets) (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Millions, unless otherwise specified
Deferred tax liabilities:	'	'
Tax over book depreciation	$87.10	$39.10
Intangibles	126.1	98.8
Other, net	19.9	9.2
Total deferred tax liabilities	233.1	147.1
Deferred tax assets:	'	'
Pension and other Post-retirement benefits	20.6	64.7
Employment costs	36.8	23.4
Environmental	49.3	27.9
Net operating loss carryforwards	38	31.2
Other, net	32.6	10.4
Total deferred tax assets	177.3	157.6
Valuation allowances	-29.3	-18.9
Net deferred tax liabilities	($85.10)	($8.40)

Income_Taxes_Changes_In_Unreco

Income Taxes (Changes In Unrecognized Tax Benefits) (Details) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]	'	'	'
Balance as of January 1	$14.50	$15.10	$9.90
Additions based on tax positions related to the current year	0	0.2	4.5
Additions for tax positions of prior years	1.1	0	1.3
Reductions for tax positions of prior years	-0.9	-0.4	-0.6
Settlements and other	0.5	-0.4	0
Balance as of December 31	$15.20	$14.50	$15.10

ShareBased_Compensation_Narrat

Share-Based Compensation (Narrative) (Details) (USD $)

0 Months Ended

12 Months Ended

In Millions, except Share data, unless otherwise specified

20-May-12

19-May-12

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Dec. 31, 2010

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Dec. 31, 2013

Stock appreciation rights

Stock appreciation rights

Stock appreciation rights

Stock appreciation rights

Stock appreciation rights

Stock appreciation rights

Restricted stock units

Restricted stock units

Restricted stock units

Vests Rateably over 3 Years

Maximum

Minimum

Stock Options

Share-Based Compensation Arrangement By Share-based Payment Award [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

Stock Issued During Period, Shares, Restricted Stock Award, Gross

'

'

500,000

800,000

500,000

'

'

'

'

'

'

'

Shares reserved for grant

'

5,000,000

'

'

'

'

'

'

'

'

'

'

Increase in authorized shares

2,000,000

'

'

'

'

'

'

'

'

'

'

'

Granted, Shares

'

'

500,000

'

'

'

'

'

500,000

600,000

300,000

'

Vesting period

'

'

'

'3 years

'3 years

'3 years

'

'

'

'

'

'

Award vesting percentage

'

'

'

'

'

'

'

'

'

'

'

33.33%

Stock awards expiration

'

'

'

'

'

'

'10 years

'7 years

'

'

'

'

Forfeitures percentage

'

'

3.00%

'

3.00%

3.00%

'

'

'

'

'

'

Intrinsic value of SARS exercised

'

'

$14.90

$25.50

$8

'

'

'

'

'

'

'

Unrecognized compensation cost

'

'

$3.20

'

'

'

'

'

$9.30

'

'

'

Weighted-average remaining contractual term

'

'

'17

'

'

'

'

'

'15

'

'

'

Nonvested, balance

'

'

2,100,000

2,100,000

'

'

'

'

1,300,000

'

'

'

Weighted-average grant date fair value

'

'

$16.63

$11.31

'

'

'

'

$18.60

'

'

'

Weighted-average grant date fair value

'

'

$10.83

$6.92

$8.12

'

'

'

'

'

'

'

ShareBased_Compensation_Summar

Share-Based Compensation (Summary Of Compensation Expense) (Details) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Share-Based Compensation Arrangement By Share-based Payment Award [Line Items]	'	'	'
Share-based compensation	$16.50	$10.40	$5.40
Stock appreciation rights	'	'	'
Share-Based Compensation Arrangement By Share-based Payment Award [Line Items]	'	'	'
Share-based compensation	6.1	5.1	2.3
Restricted stock units	'	'	'
Share-Based Compensation Arrangement By Share-based Payment Award [Line Items]	'	'	'
Share-based compensation	$10.40	$5.30	$3.10

ShareBased_Compensation_Summar1

Share-Based Compensation (Summary Of Assumptions Related To Grants) (Details) (Stock appreciation rights, USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Stock appreciation rights	'	'	'
Share-Based Compensation Arrangement By Share-based Payment Award [Line Items]	'	'	'
Expected volatility (weighted-average)	50.00%	53.00%	56.00%
Expected dividends	1.04%	1.37%	0.00%
Expected term (in years)	'7 years 4 months 24 days	'8 years	'6 years
Risk-free rate	2.12%	2.05%	2.86%
Value of SARs granted	$10.83	$6.92	$8.12

ShareBased_Compensation_Summar2

Share-Based Compensation (Summary Of Stock Appreciation Rights) (Details) (Stock appreciation rights, USD $)	12 Months Ended
In Millions, except Per Share data, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Share-Based Compensation Arrangement By Share-based Payment Award [Line Items]	'	'
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other Than Options, Outstanding, Aggregate Intrinsic Value	$39.30	$19.20
Shares	'	'
Outstanding as of January 1, 2013, Shares	2.1	'
Granted, Shares	0.5	'
Exercised, Shares	-0.9	'
Forfeited or expired, Shares	-0.1	'
Outstanding as of December 31, 2013, Shares	2.1	2.1
Outstanding, vested and exercisable as of December 31, 2013, Shares	1	'
Weighted-Average Exercise Price Per Share	'	'
Outstanding as of January 1, 2013, Weighted-Average Exercise Price Per Share	$11.31	'
Granted, Weighted-Average Exercise Price Per Share	$23.08	'
Exercised, Weighted-Average Exercise Price Per Share	$11.49	'
Forfeited or expired, Weighted-Average Exercise Price Per Share	$18.05	'
Outstanding as of December 31, 2013, Weighted-Average Exercise Price Per Share	$16.63	$11.31
Outstanding, vested and exercisable as of December 31, 2013, Weighted Average Exercise Price Per Share	$14.94	'
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Additional Disclosures [Abstract]	'	'
Outstanding as of January 1, 2013, Weighted-Average Remaining Contractual Term	'6 years 3 months 29 days	'6 years 6 months 29 days
Outstanding as of December 31, 2013, Weighted-Average Remaining Contractual Term	'6 years 3 months 29 days	'6 years 6 months 29 days
Vested and exercisable as of December 31, 2013, Weighted-Average Remaining Contractual Term	'3 years 11 months 27 days	'
Vested and exercisable as of December 31, 2013, Aggregate Intrinsic Value	$20.60	'
Spartech Corporation	'	'
Shares	'	'
Granted, Shares	0.5	'
Weighted-Average Exercise Price Per Share	'	'
Granted, Weighted-Average Exercise Price Per Share	$25.05	'

Segment_Information_Narrative_

Segment Information (Narrative) (Details) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 21, 2011
	supplier	ColorMatrix
	grade_resin
Segment Reporting Information [Line Items]	'	'
Cash consideration transferred to shareholders	'	$486.10
Number of products under distribution	3,500	'
Number of products sold	6,000	'
Number of major suppliers	25	'

Segment_Information_Schedule_O

Segment Information (Schedule Of Segment Information) (Details) (USD $)	3 Months Ended								12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Segment Reporting Information [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Intersegment sales	'	'	'	'	'	'	'	'	$0	$0	$0
Total Sales	'	'	'	'	'	'	'	'	3,771.20	2,860.80	2,709.40
Operating Income	48.7	61.6	80.7	40.5	13.3	43.5	43.3	37.4	231.5	137.5	203
Depreciation and Amortization (1)	'	'	'	'	'	'	'	'	109.8	69.8	57.5
Total Assets	2,944.10	'	'	'	2,128	'	'	'	2,944.10	2,128	2,078.10
Capital Expenditures (1a)	'	'	'	'	'	'	'	'	76.4	57.4	54.1
Global Specialty Engineered Materials	'	'	'	'	'	'	'	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Revenue, Net	'	'	'	'	'	'	'	'	571.9	504.9	540.2
Intersegment sales	'	'	'	'	'	'	'	'	43.6	38.7	34.9
Total Sales	'	'	'	'	'	'	'	'	615.5	543.6	575.1
Operating Income	'	'	'	'	'	'	'	'	57.2	47	45.9
Depreciation and Amortization (1)	'	'	'	'	'	'	'	'	18.8	14.3	14.8
Total Assets	379.6	'	'	'	396.6	'	'	'	379.6	396.6	349.7
Capital Expenditures (1a)	'	'	'	'	'	'	'	'	14.3	12.9	9.2
Global Color, Additives and Inks	'	'	'	'	'	'	'	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Revenue, Net	'	'	'	'	'	'	'	'	844.6	776.1	615
Intersegment sales	'	'	'	'	'	'	'	'	7.7	2.1	2.7
Total Sales	'	'	'	'	'	'	'	'	852.3	778.2	617.7
Operating Income	'	'	'	'	'	'	'	'	104	75.3	50.2
Depreciation and Amortization (1)	'	'	'	'	'	'	'	'	38.8	32.9	19.6
Total Assets	962	'	'	'	901.7	'	'	'	962	901.7	927.1
Capital Expenditures (1a)	'	'	'	'	'	'	'	'	29.3	28.2	14.9
Designed Structures and Solutions [Member]	'	'	'	'	'	'	'	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Revenue, Net	'	'	'	'	'	'	'	'	597.3	'	'
Intersegment sales	'	'	'	'	'	'	'	'	0.1	'	'
Total Sales	'	'	'	'	'	'	'	'	597.4	'	'
Operating Income	'	'	'	'	'	'	'	'	33.4	'	'
Depreciation and Amortization (1)	'	'	'	'	'	'	'	'	21.2	'	'
Total Assets	549.4	'	'	'	'	'	'	'	549.4	'	'
Capital Expenditures (1a)	'	'	'	'	'	'	'	'	13.4	'	'
Performance Products and Solutions	'	'	'	'	'	'	'	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Revenue, Net	'	'	'	'	'	'	'	'	690.9	554.9	562.1
Intersegment sales	'	'	'	'	'	'	'	'	82.3	75.4	77
Total Sales	'	'	'	'	'	'	'	'	773.2	630.3	639.1
Operating Income	'	'	'	'	'	'	'	'	56	38.8	27.7
Depreciation and Amortization (1)	'	'	'	'	'	'	'	'	15.5	13.7	15
Total Assets	278.7	'	'	'	205.4	'	'	'	278.7	205.4	222.5
Capital Expenditures (1a)	'	'	'	'	'	'	'	'	12.4	4.6	12.7
PolyOne Distribution	'	'	'	'	'	'	'	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Revenue, Net	'	'	'	'	'	'	'	'	1,066.50	1,024.90	992.1
Intersegment sales	'	'	'	'	'	'	'	'	8.7	5.4	4.4
Total Sales	'	'	'	'	'	'	'	'	1,075.20	1,030.30	996.5
Operating Income	'	'	'	'	'	'	'	'	63.3	66	56
Depreciation and Amortization (1)	'	'	'	'	'	'	'	'	0.6	0.7	0.7
Total Assets	216.7	'	'	'	212.9	'	'	'	216.7	212.9	183.5
Capital Expenditures (1a)	'	'	'	'	'	'	'	'	0.3	0.6	0.2
Corporate and eliminations	'	'	'	'	'	'	'	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Revenue, Net	'	'	'	'	'	'	'	'	0	0	0
Intersegment sales	'	'	'	'	'	'	'	'	-142.4	-121.6	-119
Total Sales	'	'	'	'	'	'	'	'	-142.4	-121.6	-119
Operating Income	'	'	'	'	'	'	'	'	-82.4	-89.6	23.2
Depreciation and Amortization (1)	'	'	'	'	'	'	'	'	13.9	4.2	3.1
Total Assets	557.7	'	'	'	411.4	'	'	'	557.7	411.4	395.3
Capital Expenditures (1a)	'	'	'	'	'	'	'	'	6.5	8.5	13.4
Continuing Operations [Member]	'	'	'	'	'	'	'	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Depreciation and Amortization (1)	'	'	'	'	'	'	'	'	108.8	65.8	53.2
Capital Expenditures (1a)	'	'	'	'	'	'	'	'	76.2	54.8	50.4
Resin Business [Member]	'	'	'	'	'	'	'	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Depreciation and Amortization, Discontinued Operations	'	'	'	'	'	'	'	'	1	4	4.3
Capital Expenditures (1a)	'	'	'	'	'	'	'	'	$0.20	$2.60	$3.70

Segment_Information_Schedule_O1

Segment Information (Schedule Of Earnings Of Equity Affiliates) (Details) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Segment Reporting Information [Line Items]	'	'	'
Income related to previously owned equity affiliates	$26.90	$23.40	$152

Segment_Information_Schedule_O2

Segment Information (Schedule Of Revenue And Long-Lived Assets) (Details) (USD $)	3 Months Ended								12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Segment Reporting Information [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Net sales:	$923.60	$1,008.90	$1,037.60	$801.10	$651	$707.70	$756.60	$745.50	$3,771.20	$2,860.80	$2,709.40
Long-lived assets:	646.2	'	'	'	385.8	'	'	'	646.2	385.8	'
(In millions)	'	'	'	'	'	'	'	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Net sales:	'	'	'	'	'	'	'	'	2,538.20	1,724.10	1,628.30
Long-lived assets:	444.4	'	'	'	240.9	'	'	'	444.4	240.9	235.2
Europe	'	'	'	'	'	'	'	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Net sales:	'	'	'	'	'	'	'	'	519.7	488.1	491.3
Long-lived assets:	103	'	'	'	82.2	'	'	'	103	82.2	86.9
Canada	'	'	'	'	'	'	'	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Net sales:	'	'	'	'	'	'	'	'	267.8	248.1	248.7
Long-lived assets:	13.2	'	'	'	5.7	'	'	'	13.2	5.7	5.9
Asia	'	'	'	'	'	'	'	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Net sales:	'	'	'	'	'	'	'	'	239	221.2	196.3
Long-lived assets:	51.8	'	'	'	45.1	'	'	'	51.8	45.1	39.3
Mexico	'	'	'	'	'	'	'	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Net sales:	'	'	'	'	'	'	'	'	158.1	141.8	102.6
Long-lived assets:	20.5	'	'	'	3.5	'	'	'	20.5	3.5	2.7
South America	'	'	'	'	'	'	'	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Net sales:	'	'	'	'	'	'	'	'	48.4	37.5	42.2
Long-lived assets:	$13.30	'	'	'	$8.40	'	'	'	$13.30	$8.40	$4.60

WeightedAverage_Shares_Used_In

Weighted-Average Shares Used In Computing Earnings Per Share (Schedule Of Weighted-Average Shares Used In Computing Earnings Per Share) (Details)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Earnings Per Share [Abstract]	'	'	'
Weighted-average shares - basic:	95.5	89.1	92.2
Plus dilutive impact of stock options and stock awards	1	0.7	2.1
Weighted-average shares - diluted:	96.5	89.8	94.3

Common_Share_Narrative_Details

Common Share Narrative (Details) (USD $)	12 Months Ended
In Millions, except Share data, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Oct. 23, 2012	Oct. 11, 2011	Aug. 31, 2008
Earnings Per Share [Abstract]	'	'	'	'	'	'
Anti-dilutive effect on computation of diluted earnings per share	300,000	1,200,000	500,000	'	'	'
Common shares authorized to be repurchased	'	'	'	'	'	10,000,000
Increase in common share repurchase authorization	'	'	'	13,200,000	5,250,000	'
Remaining shares to be repurchased	15,000,000	'	'	'	'	'
Repurchase of common shares, shares	5,000,000	1,200,000	6,000,000	'	'	'
Purchase of common shares for treasury	$131.60	$15.90	$73.60	'	'	'

Derivative_Instruments_Fair_Va

Derivative Instruments (Fair Value of Derivative Instruments on Balance Sheet) (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Millions, unless otherwise specified
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'
Derivative Instruments Not Designated as Hedging Instruments, Asset, at Fair Value	'	$0.60
Foreign currency options	'	'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'
Foreign currency options at fair value	'	31.2
Derivative Instruments Not Designated as Hedging Instruments, Asset, at Fair Value	'	0.6
Foreign currency forwards	'	'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'
Foreign currency options at fair value	$12.80	$13.80

Derivative_Instruments_Derivat

Derivative Instruments Derivative Instruments (Consolidated Income Statement Impact) (Details) (Selling and administrative expense, USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Foreign currency options	'	'	'
Derivative Instruments, Gain (Loss) [Line Items]	'	'	'
Loss on Foreign Currency Derivative Instruments Not Designated as Hedging Instruments	($0.40)	($1.40)	$0
Foreign currency forwards	'	'	'
Derivative Instruments, Gain (Loss) [Line Items]	'	'	'
Loss on Foreign Currency Derivative Instruments Not Designated as Hedging Instruments	($0.60)	($0.40)	($1.80)

Fair_Value_Carrying_Amounts_An

Fair Value (Carrying Amounts And Fair Values of Financial Instruments) (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
In Millions, unless otherwise specified
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'	'	'
Cash and Cash Equivalents, at Carrying Value	$365.20	$210	$191.90	$378.10
Cash and cash equivalents	'	210	'	'
Derivative Instruments Not Designated as Hedging Instruments, Asset, at Fair Value	'	0.6	'	'
Quoted Prices in Active Markets (Level 1)	'	'	'	'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'	'	'
Cash and cash equivalents	'	210	'	'
Significant Other Observable Inputs (Level 2)	'	'	'	'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'	'	'
Cash and cash equivalents	0	0	'	'
Significant Unobservable Inputs (Level 3)	'	'	'	'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'	'	'
Cash and cash equivalents	0	0	'	'
Foreign currency options	'	'	'	'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'	'	'
Derivative Instruments Not Designated as Hedging Instruments, Asset, at Fair Value	'	0.6	'	'
Foreign currency options | Significant Other Observable Inputs (Level 2)	'	'	'	'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'	'	'
Derivative Instruments Not Designated as Hedging Instruments, Asset, at Fair Value	'	$0.60	'	'

Fair_Value_Narrative_Details

Fair Value (Narrative) (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Millions, unless otherwise specified
Fair Value Disclosures [Abstract]	'	'
Debt fair value	$1,010.30	$741
Debt carrying value	$988.90	$706.90

Financial_Information_Of_Previ1

Financial Information Of Previously Owned Equity Affiliates (Narrative) (Details) (USD $)	1 Months Ended	3 Months Ended		12 Months Ended
In Millions, unless otherwise specified	Feb. 28, 2011	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Schedule of Equity Method Investments [Line Items]	'	'	'	'	'	'
Income related to previously owned equity affiliates	'	'	'	$26.90	$23.40	$152
SunBelt	'	'	'	'	'	'
Schedule of Equity Method Investments [Line Items]	'	'	'	'	'	'
Percentage of equity interest sold	50.00%	'	'	'	'	'
Proceeds from sale of equity method investments	132.3	'	'	'	'	'
Guaranteed senior notes	42.7	'	'	24.4	'	'
Pre-tax gain on sale of equity interest	'	'	'	'	'	128.2
Income related to previously owned equity affiliates	'	'	'	'	'	5.7
Pre-tax gain associated with estimated earnout of SunBelt	'	$26.80	$23	$26.90	$23.40	$18.10

Selected_Quarterly_Financial_D1

Selected Quarterly Financial Data (Schedule Of Quarterly Financial Data) (Details) (USD $)

3 Months Ended

12 Months Ended

In Millions, except Per Share data, unless otherwise specified

Dec. 31, 2013

Sep. 30, 2013

Jun. 30, 2013

Mar. 31, 2013

Dec. 31, 2012

Sep. 30, 2012

Jun. 30, 2012

Mar. 31, 2012

Dec. 31, 2011

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Selected Quarterly Financial Data [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

Sales

$923.60

$1,008.90

$1,037.60

$801.10

$651

$707.70

$756.60

$745.50

'

$3,771.20

$2,860.80

$2,709.40

Gross Margin

114.9

181.3

203.7

162.3

119.7

135.1

144

132.3

'

662.2

531.1

429.3

Operating income

48.7

61.6

80.7

40.5

13.3

43.5

43.3

37.4

'

231.5

137.5

203

Net income from continuing operations

20.6

23

38.3

11

0.1

19.4

18.4

15.3

'

'

'

'

Income (Loss) from Continuing Operations, Including Portion Attributable to Noncontrolling Interest

21

23.2

38.6

11.2

0.2

19.4

18.4

15.3

'

92.9

53.2

153.4

Basic net income - continuing operations

$0.22

$0.24

$0.39

$0.12

$0

$0.22

$0.21

$0.17

'

$0.98

$0.60

$1.66

Diluted net income - continuing operations

$0.22

$0.24

$0.39

$0.12

$0

$0.22

$0.20

$0.17

'

$0.97

$0.59

$1.63

Remeasurement Gain (Loss) Net On Pension Plans

44

'

'

'

-42

'

'

'

83.8

'

'

'

Environmental remediation expense

52.6

5.3

1.3

2

3.1

5.2

2.9

1.6

'

'

'

'

Reimbursement of previously incurred environmental cost

3.4

'

14.9

5.2

'

'

'

'

'

'

'

'

Acquisition related costs

'

1.2

4.9

8.7

2

'

'

'

'

'

'

'

Discontinued Operation, Gain (Loss) from Disposal of Discontinued Operation, before Income Tax

'

'

'

'

'

'

'

'

'

223.7

0

0

Commitment fees

'

'

'

'

1.3

'

'

'

'

'

'

'

Restructuring charges

'

'

'

'

'

'

'

'

'

52

11.5

'

Gain (Loss) Related to Litigation Settlement

'

7

'

'

'

'

'

'

'

7

'

'

Payments of Debt Extinguishment Costs

'

5.2

'

10.6

'

'

'

'

'

'

'

'

Reversal of valuation allowances

29.3

'

'

'

18.9

'

'

'

'

29.3

18.9

'

Insurance reimbursements

'

'

'

'

'

'

'

'

'

23.5

'

3.3

SunBelt

'

'

'

'

'

'

'

'

'

'

'

'

Selected Quarterly Financial Data [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

Pre-tax gain associated with estimated earnout of SunBelt

26.8

'

'

'

23

'

'

'

'

26.9

23.4

18.1

Gain (Loss) on Sale of Equity Investments

'

'

'

'

'

'

'

'

'

'

'

128.2

Plant Closure and Reductions in Force

'

'

'

'

'

'

'

'

'

'

'

'

Selected Quarterly Financial Data [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

Restructuring charges

28.3

10.9

2.9

9.9

1

1.3

8.7

'

'

'

'

'

ColorMatrix

'

'

'

'

'

'

'

'

'

'

'

'

Selected Quarterly Financial Data [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

Expense of fair market value of inventory of ColorMatrix

'

'

'

'

'

'

'

5.4

'

'

'

'

325211 Plastics Material and Resin Manufacturing [Member]

'

'

'

'

'

'

'

'

'

'

'

'

Selected Quarterly Financial Data [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

Discontinued Operation, Gain (Loss) from Disposal of Discontinued Operation, before Income Tax

'

'

$223.70

'

'

'

'

'

'

'

'

'