View Filing Data

Print Document View Excel Document

Document And Entity Information - USD ($) $ in Billions	12 Months Ended
Document And Entity Information - USD ($) $ in Billions	Dec. 31, 2018	Feb. 01, 2019	Jun. 29, 2018
Document And Entity Information [Abstract]
Entity Registrant Name	POLYONE CORP
Entity Central Index Key	0001122976
Document Type	10-K
Document Period End Date	Dec. 31, 2018
Amendment Flag	false
Document Fiscal Year Focus	2018
Document Fiscal Period Focus	FY
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Entity Emerging Growth Company	false
Entity Small Business	false
Entity Common Stock, Shares Outstanding		77,722,398
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Shell Company	false
Entity Public Float			$ 3.5

Consolidated Statements Of Income (Loss) - USD ($) shares in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Income Statement [Abstract]
Sales	$ 3,533.4	$ 3,229.9	$ 2,938.6
Cost of sales	2,788.5	2,511.0	2,262.2
Gross margin	744.9	718.9	676.4
Selling and administrative expense	471.2	446.1	408.7
Operating income	273.7	272.8	267.7
Interest expense, net	62.8	60.8	59.7
Debt extinguishment costs	(1.1)	(0.3)	(0.4)
Other (expense) income, net	(12.6)	0.6	19.0
Income from continuing operations before income taxes	197.2	212.3	226.6
Income tax expense	(36.4)	(38.7)	(60.4)
Net income from continuing operations	160.8	173.6	166.2
Loss from discontinued operations, net of income taxes	(1.3)	(231.2)	(1.2)
Net income (loss)	159.5	(57.6)	165.0
Net loss (income) attributable to noncontrolling interests	0.3	(0.1)	0.2
Net income (loss) attributable to PolyOne common shareholders	$ 159.8	$ (57.7)	$ 165.2
Earnings (loss) per share attributable to PolyOne common shareholders - Basic:
Continuing operations (in usd per share)	$ 2.02	$ 2.13	$ 1.98
Discontinued operations (in usd per share)	(0.01)	(2.84)	(0.01)
Total (in usd per share)	2.01	(0.71)	1.97
Earnings (loss) per share attributable to PolyOne common shareholders - Diluted:
Continuing operations (in usd per share)	2.00	2.11	1.96
Discontinued operations (in usd per share)	(0.01)	(2.81)	(0.01)
Total (in usd per share)	$ 1.99	$ (0.70)	$ 1.95
Weighted-average shares used to compute earnings per common share:
Basic (in shares)	79.7	81.5	83.9
Plus dilutive impact of share-based compensation (in shares)	0.7	0.6	0.7
Diluted (in shares)	80.4	82.1	84.6
Anti-dilutive shares not included in diluted common shares outstanding (in shares)	0.0	0.6	0.2
Cash dividends declared per common share (in usd per share)	$ 0.72	$ 0.58	$ 0.495

Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ 159.5	$ (57.6)	$ 165.0
Other comprehensive (loss) income, net of tax:
Translation adjustments and related hedging instruments	(27.6)	41.2	(23.0)
Cash flow hedges	(1.3)	0.0	0.0
Other	(0.4)	0.0	0.1
Total other comprehensive (loss) income	(29.3)	41.2	(22.9)
Total comprehensive income (loss)	130.2	(16.4)	142.1
Comprehensive loss (income) attributable to noncontrolling interests	0.3	(0.1)	0.2
Comprehensive income (loss) attributable to PolyOne common shareholders	$ 130.5	$ (16.5)	$ 142.3

Consolidated Balance Sheets - USD ($) $ in Millions	Dec. 31, 2018	Dec. 31, 2017
Current assets:
Cash and cash equivalents	$ 170.9	$ 243.6
Accounts receivable, net	413.4	392.4
Inventories, net	344.7	327.8
Other current assets	69.8	102.8
Total current assets	998.8	1,066.6
Property, net	495.4	461.6
Goodwill	650.3	610.5
Intangible assets, net	423.4	400.0
Other non-current assets	155.4	166.6
Total assets	2,723.3	2,705.3
Current liabilities:
Short-term and current portion of long-term debt	19.4	32.6
Accounts payable	399.0	388.9
Accrued expenses and other current liabilities	139.2	149.1
Total current liabilities	557.6	570.6
Non-current liabilities:
Long-term debt	1,336.2	1,276.4
Pension and other post-retirement benefits	54.3	62.3
Deferred income taxes	69.3	40.3
Other non-current liabilities	165.3	156.3
Total non-current liabilities	1,625.1	1,535.3
SHAREHOLDERS' EQUITY
Common Shares, $0.01 par, 400.0 shares authorized, 122.2 shares issued	1.2	1.2
Additional paid-in capital	1,166.9	1,161.5
Retained earnings	472.9	387.1
Common shares held in treasury, at cost, 44.5 shares in 2018 and 41.3 shares in 2017	(1,018.7)	(898.3)
Accumulated other comprehensive loss	(82.3)	(53.0)
PolyOne shareholders' equity	540.0	598.5
Noncontrolling interest	0.6	0.9
Total equity	540.6	599.4
Total liabilities and equity	$ 2,723.3	$ 2,705.3

Consolidated Balance Sheets (Parenthetical) - $ / shares	Dec. 31, 2018	Dec. 31, 2017
Statement of Financial Position [Abstract]
Common shares, par value (in usd per share)	$ 0.01	$ 0.01
Common shares, authorized (in shares)	400,000,000	400,000,000
Common shares, issued (in shares)	122,200,000	122,200,000
Treasury stock, shares (in shares)	44,500,000	41,300,000

Consolidated Statements Of Cash Flows - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Operating activities
Net income (loss)	$ 159.5	$ (57.6)	$ 165.0
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Loss on sale of business, net of tax	0.0	227.7	0.0
Depreciation and amortization	88.5	97.4	100.5
Accelerated depreciation and fixed asset charges associated with restructuring activities	3.0	0.9	5.4
Gain from sale of closed facilities	0.0	(3.6)	0.0
Deferred income tax (benefit) expense	(4.8)	(1.4)	10.5
Debt extinguishment costs	1.1	0.3	0.4
Share-based compensation expense	10.9	10.2	8.4
Changes in assets and liabilities, net of the effect of acquisitions:
Increase in accounts receivable	(11.3)	(44.7)	(17.6)
(Increase) decrease in inventories	(10.6)	(41.1)	0.8
Increase in accounts payable	7.9	52.2	12.4
Increase (decrease) in pension and other post-retirement benefits	4.8	(9.6)	(43.2)
Increase (decrease) in accrued expenses and other assets and liabilities - net	4.7	(28.3)	(15.0)
Net cash provided by operating activities	253.7	202.4	227.6
Investing activities
Capital expenditures	(76.0)	(79.6)	(84.2)
Business acquisitions, net of cash acquired	(98.6)	(163.8)	(164.2)
Proceeds from the sale of business and other assets	4.3	124.0	13.0
Net cash used by investing activities	(170.3)	(119.4)	(235.4)
Financing activities
Borrowings under credit facilities	1,152.9	1,472.9	1,031.9
Repayments under credit facilities	(1,090.3)	(1,417.0)	(1,032.7)
Purchase of common shares for treasury	(123.0)	(70.7)	(86.2)
Cash dividends paid	(56.1)	(44.1)	(40.2)
Repayment of other debt	(16.4)	0.0	0.0
Repayment of long-term debt	(6.5)	(6.5)	(6.0)
Payments on withholding tax on share awards	(4.1)	(4.7)	(5.1)
Debt financing costs	(4.6)	(2.6)	(2.0)
Net proceeds from long-term debt	0.0	0.0	100.0
Net cash used by financing activities	(148.1)	(72.7)	(40.3)
Effect of exchange rate changes on cash	(8.0)	6.6	(5.0)
(Decrease) increase in cash and cash equivalents	(72.7)	16.9	(53.1)
Cash and cash equivalents at beginning of year	243.6	226.7	279.8
Cash and cash equivalents at end of year	$ 170.9	$ 243.6	$ 226.7

Consolidated Statements Of Shareholders' Equity - USD ($) shares in Millions, $ in Millions	Total	Total PolyOne shareholders' equity	Common Shares	Common Shares Held in Treasury	Additional Paid-in Capital	Retained Earnings	Accumulated Other Comprehensive Loss	Non-controlling Interests
Beginning Balance at Dec. 31, 2015	$ 705.2	$ 704.2	$ 1.2	$ (748.4)	$ 1,155.6	$ 367.1	$ (71.3)	$ 1.0
Beginning Balance, Common shares (in shares) at Dec. 31, 2015			122.2
Beginning Balance, Treasury shares (in shares) at Dec. 31, 2015				(36.9)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net (loss) income	165.0	165.2				165.2		(0.2)
Other comprehensive loss	(22.9)	(22.9)					(22.9)
Cash dividends declared	(41.1)	(41.1)				(41.1)
Repurchase of common shares	(86.2)	(86.2)		$ (86.2)
Repurchase of common shares (in shares)				(3.0)
Share-based compensation and exercise of awards	5.5	5.5		$ 4.0	1.5
Share-based compensation and exercise of awards (in shares)				0.3
Ending Balance at Dec. 31, 2016	725.5	724.7	$ 1.2	$ (830.6)	1,157.1	491.2	(94.2)	0.8
Ending Balance, Common shares (in shares) at Dec. 31, 2016			122.2
Ending Balance, Treasury shares (in shares) at Dec. 31, 2016				(39.6)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net (loss) income	(57.6)	(57.7)				(57.7)		0.1
Other comprehensive loss	41.2	41.2					41.2
Cash dividends declared	(46.9)	(46.9)				(46.9)
Repurchase of common shares	(70.7)	(70.7)		$ (70.7)
Repurchase of common shares (in shares)				(2.0)
Share-based compensation and exercise of awards	7.4	7.4		$ 3.0	4.4
Share-based compensation and exercise of awards (in shares)				0.3
Other	0.5	0.5				0.5
Ending Balance at Dec. 31, 2017	$ 599.4	598.5	$ 1.2	$ (898.3)	1,161.5	387.1	(53.0)	0.9
Ending Balance, Common shares (in shares) at Dec. 31, 2017			122.2
Ending Balance, Treasury shares (in shares) at Dec. 31, 2017	(41.3)			(41.3)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net (loss) income	$ 159.5	159.8				159.8		(0.3)
Other comprehensive loss	(29.3)	(29.3)					(29.3)
Cash dividends declared	(57.5)	(57.5)				(57.5)
Repurchase of common shares	(123.0)	(123.0)		$ (123.0)
Repurchase of common shares (in shares)				(3.4)
Share-based compensation and exercise of awards	8.0	8.0		$ 2.6	5.4
Share-based compensation and exercise of awards (in shares)				0.2
Other	(16.5)	(16.5)				(16.5)
Ending Balance at Dec. 31, 2018	$ 540.6	$ 540.0	$ 1.2	$ (1,018.7)	$ 1,166.9	$ 472.9	$ (82.3)	$ 0.6
Ending Balance, Common shares (in shares) at Dec. 31, 2018			122.2
Ending Balance, Treasury shares (in shares) at Dec. 31, 2018	(44.5)			(44.5)

Description of Business and Summary of Significant Accounting Policies

12 Months Ended

Dec. 31, 2018

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Description of Business and Summary of Significant Accounting Policies

Note 1 — 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 engineered materials, advanced composites, color and additive systems 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 these notes to the consolidated financial statements, the terms “we,” “us,” “our”, “PolyOne” and the “Company” mean PolyOne Corporation and its consolidated subsidiaries.

Our operations are located primarily in North America, South America, Europe and Asia. Our operations are reported in four reportable segments: Color, Additives and Inks; Specialty Engineered Materials; Performance Products and Solutions; and Distribution. See Note 14, Segment Information, for more information.

Accounting Standards Adopted

On January 1, 2018, the Company adopted Accounting Standards Codification (ASC) 606, Revenue from Contracts with Customers and all related amendments (the Standard), for all contracts using the modified retrospective method. The Standard implements a five-step process for revenue recognition that focuses on transfer of control and defines a contract as “an agreement between two or more parties that creates legally enforceable rights and obligations.” The adoption of the Standard did not materially impact the timing and measurement of revenue recognition. Additionally, we concluded that the methodology for which we historically estimated and recognized variable consideration (e.g., rebates) is consistent with the requirements of the Standard. As a result, we did not recognize a cumulative effect adjustment to the opening balance of retained earnings.

At contract inception, PolyOne assesses the goods and services promised to a customer and identifies a performance obligation for each promised good or service that is distinct. Our contracts, generally in the form of purchase orders or written contracts, specify the product or service that is promised to the customer. The typical contract life is less than 12 months and contains only one performance obligation, to provide conforming goods or services to the customer. Revenue is recognized at the point in time when control of the product is transferred to the customer, which typically occurs when products are shipped from our facilities with the exception of certain contract manufacturing arrangements.

The revenue streams within the Company are consistent with those disclosed for our reportable segments, within Note 14, Segment Information. For descriptions of our product offerings and segments see Note 14, Segment Information. We offer more than 35,000 polymer solutions to over 10,000 customers across the world. No customer accounts for more than 3% of our consolidated revenues and we do not have a high concentration of business in one particular end market.

In March 2017, the Financial Accounting Standards Board (FASB) issued Accounting Standards Update (ASU) 2017-07, Compensation - Retirement Benefits (Topic 715): Improving the Presentation of Net Periodic Pension Cost and Net Periodic Postretirement Benefit Cost (ASU 2017-07). This standard requires the presentation of the service cost component of the net periodic benefit cost in the same income statement line item as other employee compensation costs arising from services rendered during the period. All other components of net periodic benefit cost must be presented below operating income. The Company has adopted ASU 2017-07 on January 1, 2018.

ASU 2017-07 provides a practical expedient to utilize previously disclosed components of net periodic benefit costs as an estimate for retrospective presentation. Utilizing this practical expedient, the Company reclassified non-service components of net periodic benefit cost from Cost of sales and Selling and administrative expense into Other income, net on the Consolidated Statements of Income. The adoption of ASU 2017-07 resulted in $9.6 million of costs for the year ended December 31, 2018 and gains of $4.7 million, and $18.6 million for the years ended December 31, 2017 and 2016, respectively, of the non-service components of net periodic benefit presented in Other income, net. For additional detail on the components of our annual net periodic benefit cost, see Note 10, Employee Benefit Plans.

In October 2016, the FASB issued ASU 2016-16, Income Taxes (Topic 740), Intra-Entity Transfers of Assets Other than Inventory (ASU 2016-16), which requires companies to recognize the income tax effects of intercompany sales or transfers of assets, other than inventory, in the income statement as income tax expense or benefit in the period the sale or transfer occurs. We recognized an adjustment of $17.0 million to beginning retained earnings upon adoption of this standard on January 1, 2018 from transactions completed as of December 31, 2017.

In August 2017, the FASB issued ASU 2017-12, Derivatives and Hedging (Topic 815): Targeted Improvements to Accounting for Hedging Activities (ASU 2017-12). This amendment to the hedge accounting model better aligns an entity's risk management activities with its financial reporting by expanding an entity's ability to hedge risk components, eliminating the separate measurement and reporting of hedge ineffectiveness and reducing the complexity of applying certain aspects of hedge accounting. The Company has early adopted ASU 2017-12 as of July 1, 2018. For additional disclosure and detail on the hedge relationships entered into by the Company, see Note 15, Derivatives and Hedging.

Accounting Standards Not Yet Adopted

In February 2016, the FASB issued ASU 2016-02, Leases (Topic 842) (ASU 2016-02). ASU 2016-02 was issued to increase transparency and comparability among entities by recognizing lease assets and lease liabilities on the balance sheet and disclosing key information about lease arrangements. ASU 2016-02 is effective for public companies for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2018.

We will adopt the new standard on the required effective date of January 1, 2019 using the transition option, “Comparatives Under 840 Option,” established by ASU 2018-11, Leases (Topic 842), Targeted Improvements (ASU 2018-11). This transition option was released by the FASB to reduce the cost and complexity associated with reflecting the new standard in prior periods presented. We will also elect the practical expedient package related to the identification, classification and accounting for initial direct costs whereby prior conclusions do not have to be reassessed for leases that commenced before the effective date. As we will not reassess such conclusions, the Company does not plan to adopt the practical expedient to use hindsight to determine the likelihood of whether a lease will be extended, terminated or whether a purchase option will be exercised.

A cross-functional implementation team is finalizing policy elections, the discount rate to be used based on January 1, 2019 data, and business processes and controls to support recognition and disclosure under the new standard. The primary impact upon adoption will be the recognition of right of use assets and lease obligations, on a discounted basis, of our minimum lease obligations, as disclosed in Note 6, Leasing Arrangements. We currently do not expect ASU 2016-12 to have a material effect on our Consolidated Statements of Income.

In June 2016, the FASB issued ASU 2016-13, Financial Instruments - Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments (ASU 2016-13). ASU 2016-13 changes the impairment model for most financial instruments. Current guidance requires the recognition of credit losses based on an incurred loss impairment methodology that reflects losses once the losses are probable. Under ASU 2016-13, the Company will be required to use a current expected credit loss model (CECL) that will immediately recognize an estimate of credit losses that are expected to occur over the life of the financial instruments that are in the scope of this update, including trade receivables. The CECL model uses a broader range of reasonable and supportable information in the development of credit loss estimates. This guidance becomes effective for the Company on January 1, 2020, including the interim periods in the year. The Company is currently evaluating the impact that the adoption of this ASU will have on the consolidated financial statements and related disclosures.

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. Transactions with related parties, including joint ventures, are in the ordinary course of business.

Historical information has been retrospectively adjusted to reflect the classification of discontinued operations. Discontinued operations are further discussed in Note 3, Discontinued Operations.

Reclassifications

Certain reclassifications of the prior period amounts and presentation have been made to conform to the presentation for the current period for the adoption of ASU 2017-07 as further described in the Accounting Standards Adopted section of this Note.

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, each of which are adjusted if specific circumstances change. We reserve for amounts determined to be uncollectible based on a specific customer’s inability to meet its financial obligation to us. We also record a general reserve based on the age of receivables past due, economic conditions and historical experience. In estimating the allowance, we take into consideration the existence of credit insurance. The allowance for doubtful accounts was $2.4 million and $2.8 million as of December 31, 2018 and 2017, respectively.

Inventories

External purchases of raw materials and finished goods are valued at weighted average cost. Raw materials and finished goods 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 generally ranges from 3 to 15 years for machinery and equipment and up to 40 years for buildings. We depreciate certain assets associated with closing manufacturing locations over a shortened life (through the cease-use date). 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 (Loss).

We account for operating and capital leases under the provisions of FASB Accounting Standards Codification (ASC) Topic 840, Leases.

Finite-lived intangible assets, which consist primarily of customer relationships, patents and technology are amortized over their estimated useful lives. The remaining useful lives range up to 20 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. No such impairments were recognized during 2018, 2017 or 2016.

Goodwill and Indefinite Lived Intangible Assets

In accordance with the provisions of FASB ASC Topic 350, Intangibles — Goodwill and Other, we assess the fair value of goodwill, quantitatively or qualitatively, on an annual basis or at an interim date if potential impairment indicators are present. 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, quantitatively or qualitatively, at the reporting unit level. Our reporting units have been identified at the operating segment level, or in most 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 indefinite-lived intangibles is October 1. We completed our testing of impairment as of October 1, noting no impairment in 2018, 2017 or 2016. There are no reporting units identified as at-risk of future impairment. 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, 2019.

We test our goodwill either quantitatively or qualitatively for impairment. For our quantitative approach, 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.

A qualitative approach for both goodwill and indefinite-lived intangible assets is performed if the last quantitative test exceeded certain thresholds. During our qualitative approach, we assess whether the existence of events or circumstances lead to a determination that it is more likely than not that the fair value of a reporting unit is less than its carrying amount. If, after assessing the totality of events and circumstances, we determine it is more likely than not that the fair value is less than carrying value, a quantitative impairment test is performed for each asset, as described above.

Indefinite-lived intangible assets primarily consist of the GLS, ColorMatrix and Gordon Composites trade names. Indefinite-lived intangible assets are tested, quantitatively or qualitatively, for impairment annually at the same time we test goodwill for impairment. For our quantitative approach, the implied fair value of indefinite-lived intangible assets is determined based on significant unobservable inputs, as summarized below. 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 using a weighted-average cost of capital that is determined based on current market conditions. This fair value is then compared with the carrying value of the trade name.

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 recognize expense associated with professional fees related to litigation claims and assessments as incurred. Refer to Note 11, Commitments and Contingencies, for further 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 and to changes in cash flows due to changes in our contractually specified interest rates (e.g, LIBOR) 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. We formally assess, designate and document, as a hedge of an underlying exposure, the qualifying derivative instrument that will be accounted for as an accounting hedge at inception. Additionally, in accordance with ASU 2017-12, we assess at inception whether the financial instruments used in the hedging transaction are highly effective at offsetting changes in either the fair values or cash flows of the underlying exposures. If highly effective, any subsequent test may be done qualitatively.

The net interest payments accrued each month for effective instruments designated as a hedge are reflected in net income as adjustments of interest expense and the remaining change in the fair value of the derivatives is recorded as a component of Accumulated Other Comprehensive Income (AOCI). Instruments not designated as hedges are adjusted to fair value at each period end, with the resulting gains and losses recognized in the accompanying Consolidated Statements of Income (Loss) immediately.

Refer to Note 15, Derivatives and Hedging, for more information.

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. We immediately recognize actuarial gains and losses in our operating results in the year in which the gains or losses occur. Refer to Note 10, Employee Benefit Plans, for more information.

Accumulated Other Comprehensive Loss

Changes in accumulated other comprehensive loss in 2018, 2017 and 2016 were as follows:



(In millions)	Cumulative Translation Adjustment and Related Hedging Instruments			Pension and other post-retirement benefits		Cash Flow Hedges			Other			Total
Balance at January 1, 2016	$	(76.8	)	$	5.2	$	—		$	0.3		$	(71.3	)
Translation adjustments	(23.0		)	—		—			—			(23.0		)
Unrealized gain	—			—		—			0.1			0.1
Balance at December 31, 2016	(99.8		)	5.2		—			0.4			(94.2		)
Translation adjustments	41.2			—		—			—			41.2
Balance at December 31, 2017	(58.6		)	5.2		—			0.4			(53.0		)
Translation adjustments	(25.6		)	—		—			—			(25.6		)
Unrealized losses	(2.0		)	—		(1.3		)	—			(3.3		)
Other	—			—		—			(0.4		)	(0.4		)
Balance at December 31, 2018	$	(86.2	)	$	5.2	$	(1.3	)	$	—		$	(82.3	)

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.

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 long-term investments, are included in Other income (expense), net in the accompanying Consolidated Statements of Income (Loss).

Revenue Recognition

We recognize revenue once control of the product is transferred to the customer, which typically occurs when products are shipped from our facilities.

Shipping and Handling Costs

Shipping and handling costs are included in cost of sales.

Research and Development Expense

Research and development costs of $56.3 million in 2018, $52.1 million in 2017 and $50.4 million in 2016 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 they are collected.

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 (Loss). As of December 31, 2018, we had one active share-based employee compensation plan, which is described more fully in Note 13, 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. See Note 12, Income Taxes, for additional detail.

Business Combinations

12 Months Ended

Dec. 31, 2018

Business Combinations [Abstract]

Business Combinations

Note 2 — BUSINESS COMBINATIONS

On January 2, 2018, the Company completed the acquisition of IQAP Masterbatch Group S.L. (IQAP), an innovative provider of specialty colorants and additives based in Spain with customers primarily throughout Europe. Goodwill recognized as a result of this acquisition is not deductible for tax purposes. The results of IQAP are reported in the Color, Additives and Inks segment.

On May 31, 2018, the Company completed the acquisition of PlastiComp, Inc. (PlastiComp), who specializes in long-fiber reinforced thermoplastics. Goodwill recognized as a result of this acquisition is not deductible for tax purposes. The results of PlastiComp are reported in the Specialty Engineered Materials segment.

The combined total consideration of IQAP and PlastiComp of $118.5 million, net of cash acquired, is inclusive of contingent earn-out consideration for PlastiComp that will be finalized two years from the date of acquisition. The preliminary purchase price allocation for IQAP and PlastiComp resulted in intangible assets of $51.0 million, goodwill of $41.5 million, property, plant and equipment of $30.8 million, net working capital of $19.4 million, deferred tax liabilities of $13.1 million and other liabilities of $11.1 million. The total combined sales of IQAP and PlastiComp for the ended December 31, 2018 were $71.0 million.

The fair value of intangible assets acquired during the year ended December 31, 2018, including their estimated useful lives and valuation methodology are as follows:



(in millions)	Fair Value		Useful Life	Valuation Method
Customer relationships	$	21.1	18	Multi-period excess earnings
Patents, technology and other	29.9		13 - 24	Relief-from-royalty method
Total	$	51.0

Discontinued Operations

12 Months Ended

Dec. 31, 2018

Discontinued Operations and Disposal Groups [Abstract]

Discontinued Operations

Note 3 — DISCONTINUED OPERATIONS

On July 19, 2017, PolyOne divested its Designed Structures and Solutions segment (DSS) to an affiliate of Arsenal Capital Partners (Arsenal) for $115.0 million cash. The sale resulted in the recognition of an after-tax loss of $229.0 million that was primarily recognized during the second quarter of 2017.

The following table summarizes the discontinued operations associated with DSS for the years ended December 31, 2018, 2017 and 2016, which is reflected within the Loss from discontinued operations, net of income taxes line of the Consolidated Statements of Income (Loss):



(In millions)	2018			2017			2016
Sales	$	—		$	222.1		$	401.2

Loss on sale	$	(1.8	)	$	(295.6	)	$	—
Loss from operations	—			(8.6		)	(4.3		)
Loss before taxes	(1.8		)	(304.2		)	(4.3		)
Income tax benefit	0.5			73.0			3.1
Loss from discontinued operations, net of taxes	$	(1.3	)	$	(231.2	)	$	(1.2	)

Goodwill And Intangible Assets

12 Months Ended

Dec. 31, 2018

Goodwill and Intangible Assets Disclosure [Abstract]

Goodwill And Intangible Assets

Note 4 — 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.

Goodwill as of December 31, 2018 and 2017 and changes in the carrying amount of goodwill by segment were as follows:



(In millions)	Specialty Engineered Materials			Color, Additives and Inks			Performance Products and Solutions		PolyOne Distribution		Total
Balance at January 1, 2017	173.5			346.4			11.2		1.6		532.7
Acquisition of businesses	—			77.0			—		—		77.0
Currency translation	(0.3		)	1.1			—		—		0.8
Balance at December 31, 2017	173.2			424.5			11.2		1.6		610.5
Acquisition of businesses	16.3			25.8			—		—		42.1
Currency translation	(0.6		)	(1.7		)	—		—		(2.3		)
Balance at December 31, 2018	$	188.9		$	448.6		$	11.2	$	1.6	$	650.3

Indefinite and finite-lived intangible assets consisted of the following:



	As of December 31, 2018
(In millions)	Acquisition Cost		Accumulated Amortization			Currency Translation			Net
Customer relationships	$	278.4	$	(75.0	)	$	(0.7	)	$	202.7
Patents, technology and other	188.1		(66.8		)	(0.9		)	120.4
Indefinite-lived trade names	100.3		—			—			100.3
Total	$	566.8	$	(141.8	)	$	(1.6	)	$	423.4



	As of December 31, 2017
(In millions)	Acquisition Cost		Accumulated Amortization			Currency Translation		Net
Customer relationships	$	257.3	$	(61.5	)	$	0.1	$	195.9
Patents, technology and other	158.2		(54.4		)	—		103.8
Indefinite-lived trade names	100.3		—			—		100.3
Total	$	515.8	$	(115.9	)	$	0.1	$	400.0

Amortization of finite-lived intangible assets included in continuing operations for the years ended December 31, 2018, 2017 and 2016 was $25.9 million, $21.6 million and $17.9 million, respectively.

We expect finite-lived intangibles amortization expense for the next five years as follows:



	2019	2020	2021	2022	2023
Expected amortization expense	$26.2	$25.6	$25.3	$23.3	$20.8

Financing Arrangements

12 Months Ended

Dec. 31, 2018

Debt Disclosure [Abstract]

Financing Arrangements

Note 5 — FINANCING ARRANGEMENTS

Total debt consisted of the following:



As of December 31, 2018 (In millions)	Principal Amount		Unamortized discount and debt issuance cost		Net debt		Weighted average interest rate
Senior secured revolving credit facility due 2022	$	120.1	$	—	$	120.1	3.35	%
Senior secured term loan due 2026	631.0		11.2		619.8		3.80	%
5.25% senior notes due 2023	600.0		5.0		595.0		5.25	%
Other debt ⁽¹⁾	20.7		—		20.7
Total debt	$	1,371.8	$	16.2	$	1,355.6
Less short-term and current portion of long-term debt	19.4		—		19.4
Total long-term debt, net of current portion	$	1,352.4	$	16.2	$	1,336.2



As of December 31, 2017 (In millions)	Principal Amount		Unamortized discount and debt issuance cost		Net debt		Weighted average interest rate
Senior secured revolving credit facility due 2022	$	56.5	$	—	$	56.5	2.77	%
Senior secured term loan due 2026	637.5		8.5		629.0		3.27	%
5.25% senior notes due 2023	600.0		6.0		594.0		5.25	%
Other debt⁽¹⁾	29.5		—		29.5
Total debt	$	1,323.5	$	14.5	$	1,309.0
Less short-term and current portion of long-term debt	32.6		—		32.6
Total long-term debt, net of current portion	$	1,290.9	$	14.5	$	1,276.4


(1)	Other debt includes capital lease obligations of $3.4 million and $17.8 million as of December 31, 2018 and 2017, respectively.

On April 11, 2018, the Company entered into a fifth amendment to its senior secured term loan. Under the terms of the amended senior secured term loan, the margin was reduced by 25 basis points to 175 basis points. At the Company's discretion, interest is based upon (i) a margin rate of 175 basis points plus the 1-, 2-, 3-, or 6-month LIBOR, subject to a floor of 75 basis points, or (ii) a margin rate of 75 basis points plus a Prime Rate, subject to a floor of 175 basis points. On November 9, 2018, the Company entered into a sixth amendment to its senior secured term loan, which extended the maturity to 2026. Repayments in the amount of one percent of the aggregate principal amount as of August 3, 2016 are payable annually, while the remaining balance matures on January 30, 2026. The total principal repayments for the year ended December 31, 2018 were $6.5 million.

The Company maintains a senior secured revolving credit facility, which matures on February 24, 2022 and provides a maximum borrowing facility size of $450.0 million, subject to a borrowing base with advances against certain U.S. and Canadian accounts receivable, inventory and other assets as specified in the agreement. The revolving credit facility has a U.S. and a Canadian line of credit. Currently there are no borrowings on the Canadian portion of the facility. Advances under the U.S. portion of our revolving credit facility bear interest, at the Company’s option, at a Base Rate or a LIBOR Rate plus an applicable margin. The Base Rate is a fluctuating rate equal to the greater of (i) the Federal Funds Rate plus one-half percent, (ii) the prevailing LIBOR Rate plus one percent, and (iii) the prevailing Prime Rate. The applicable margins vary based on the Company’s daily average excess availability during the previous quarter. As of December 31, 2018, we had borrowings of $120.1 million under our revolving credit facility, which had remaining availability of $279.4 million. As of December 31, 2017, we had borrowings of $56.5 million under our revolving credit facility, which had remaining availability of $326.2 million.

The agreements governing our revolving credit facility and our senior secured term loan, and the indentures and credit agreements governing other debt, contain a number of customary financial and restrictive covenants that, among other things, limit our ability to: sell or otherwise transfer assets, including in a spin-off, incur additional debt or liens, consolidate or merge with any entity or transfer or sell all or substantially all of our assets, pay dividends or make certain other restricted payments, make investments, enter into transactions with affiliates, create dividend or other payment restrictions with respect to subsidiaries, make capital investments and alter the business we conduct. As of December 31, 2018, we were in compliance with all covenants.

As of December 31, 2018 and 2017, the Company maintained a credit line of $12.0 million and $16.0 million, respectively, with Saudi Hollandi Bank. The credit line has an interest rate equal to the Saudi Arabia Interbank Offered Rate plus a fixed rate of 0.85% and is subject to annual renewal. Borrowings under the credit line were primarily used to fund capital expenditures related to the manufacturing facility in Jeddah, Saudi Arabia. As of December 31, 2018, letters of credit under the credit line were immaterial and borrowings were $10.7 million with a weighted average annual interest rate of 3.35%. As of December 31, 2017, letters of credit under the credit line were $0.2 million and borrowings were $11.7 million with a weighted average annual interest rate of 2.69%. As of December 31, 2018 and 2017, there was remaining availability on the credit line of $1.3 million and $4.1 million, respectively.

The estimated fair value of PolyOne’s debt instruments at December 31, 2018 and 2017 was $1,316.8 million and $1,343.3 million, respectively, compared to carrying values of $1,355.6 million and $1,309.0 million as of December 31, 2018 and 2017, 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.

Aggregate maturities of the principal amount of debt for the next five years and thereafter are as follows:



(In millions)
2019	$	19.4
2020	8.1
2021	7.6
2022	127.3
2023	607.0
Thereafter	602.4
Aggregate maturities	$	1,371.8

Included in Interest expense, net for the years ended December 31, 2018, 2017 and 2016 was interest income of $3.1 million, $0.7 million and $0.8 million, respectively. Total interest paid on debt was $61.0 million in 2018, $59.4 million in 2017 and $56.3 million in 2016.

Leasing Arrangements

12 Months Ended

Dec. 31, 2018

Leases [Abstract]

Leasing Arrangements

Note 6 — LEASING ARRANGEMENTS

We lease certain manufacturing facilities, warehouse space, machinery and equipment, automobiles, railcars, computers and software under operating leases. Lease expense from continuing operations was $25.9 million in 2018, $25.2 million in 2017 and $23.0 million in 2016.

Future minimum lease payments under non-cancelable operating leases with initial lease terms longer than one year as of December 31, 2018 are as follows:



(In millions)
2019	$	24.5
2020	20.4
2021	12.4
2022	8.5
2023	5.8
Thereafter	9.0
Total	$	80.6

Inventories, Net

12 Months Ended

Dec. 31, 2018

Inventory Disclosure [Abstract]

Inventories, Net

Note 7 — INVENTORIES, NET

Components of Inventories, net are as follows:



(In millions)	December 31, 2018		December 31, 2017
Finished products	$	204.3	$	203.3
Work in process	6.9		5.1
Raw materials and supplies	133.5		119.4
Inventories, net	$	344.7	$	327.8

Property, Net

12 Months Ended

Dec. 31, 2018

Property, Plant and Equipment [Abstract]

Property, Net

Note 8 — PROPERTY, NET

Components of Property, net are as follows:



(In millions)	December 31, 2018			December 31, 2017
Land and land improvements⁽¹⁾	$	48.8		$	40.7
Buildings ⁽²⁾	316.5			303.5
Machinery and equipment	1,082.2			1,038.0
Property, gross	1,447.5			1,382.2
Less accumulated depreciation and amortization	(952.1		)	(920.6		)
Property, net	$	495.4		$	461.6


(1)	Land and land improvements include properties under capital leases of $0.1 million and $1.7 million as of December 31, 2018 and 2017, respectively.


(2)	Buildings include properties under capital leases of $3.6 million and $16.5 million as of December 31, 2018 and 2017, respectively.

Depreciation expense from continuing operations was $62.6 million in 2018, $61.2 million in 2017 and $57.8 million in 2016.

Other Balance Sheet Liabilities

12 Months Ended

Dec. 31, 2018

Other Liabilities Disclosure [Abstract]

Other Balance Sheet Liabilities

Note 9 — OTHER BALANCE SHEET LIABILITIES

Other liabilities at December 31, 2018 and 2017 consist of the following:



	Accrued expenses and other current liabilities				Other non-current liabilities
	December 31,				December 31,
(In millions)	2018		2017		2018		2017
Employment costs	$	75.7	$	87.5	$	18.9	$	20.1
Environmental liabilities	9.9		8.4		104.2		108.7
Accrued taxes	16.0		13.8		—		—
Pension and other post-employment benefits	4.9		5.4		—		—
Accrued interest	10.8		10.1		—		—
Dividends payable	15.6		14.2		—		—
Unrecognized tax benefits	1.7		3.3		16.1		18.1
Other	4.6		6.4		26.1		9.4
Total	$	139.2	$	149.1	$	165.3	$	156.3

Employee Benefit Plans

12 Months Ended

Dec. 31, 2018

Defined Benefit Plan [Abstract]

Employee Benefit Plans

Note 10 — EMPLOYEE BENEFIT PLANS

We recognize actuarial gains and losses 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. We recognized a charge of $15.6 million and $3.3 million in the fourth quarter of 2018 and 2017, respectively, related to the actuarial losses during the year. We recognized a benefit of $8.4 million in the fourth quarter of 2016, related to the actuarial gain during the year.

All U.S. qualified defined benefit pension plans are frozen, no longer accrue benefits and are closed to new participants. We have foreign pension plans that accrue benefits. The plans generally provide benefit payments using a formula that is based upon employee compensation and length of service.

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.



	Pension Benefits						Health Care Benefits
(In millions)	2018			2017			2018			2017
Change in benefit obligation:
Projected benefit obligation — beginning of year	$	507.7		$	503.0		$	8.8		$	10.8
Service cost	0.6			0.6			—			—
Interest cost	17.6			19.3			0.3			0.4
Actuarial (gain) loss	(23.9		)	21.3			(0.6		)	(1.7		)
Benefits paid	(37.7		)	(38.8		)	(0.8		)	(0.9		)
Other	(1.6		)	2.3			(0.3		)	0.2
Projected benefit obligation — end of year	$	462.7		$	507.7		$	7.4		$	8.8
Projected salary increases	(1.6		)	(2.0		)	—			—
Accumulated benefit obligation	$	461.1		$	505.7		$	7.4		$	8.8
Change in plan assets:
Plan assets — beginning of year	$	484.7		$	474.3		$	—		$	—
Actual (loss) return on plan assets	(16.4		)	44.0			—			—
Company contributions	4.5			4.6			0.8			0.9
Benefits paid	(37.7		)	(38.8		)	(0.8		)	(0.9		)
Other	(0.7		)	0.6			—			—
Plan assets — end of year	$	434.4		$	484.7		$	—		$	—
Unfunded status at end of year	$	(28.3	)	$	(23.0	)	$	(7.4	)	$	(8.8	)

Amounts included in the accompanying Consolidated Balance Sheets as of December 31 are as follows:



	Pension Benefits				Health Care Benefits
(In millions)	2018		2017		2018		2017
Non-current assets	$	23.5	$	35.9	$	—	$	—
Accrued expenses and other liabilities	$	4.1	$	4.4	$	0.8	$	1.0
Other non-current liabilities	$	47.7	$	54.5	$	6.6	$	7.8

As of December 31, 2018 and 2017, 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)	2018		2017		2018		2017
Projected benefit obligation	$	56.4	$	63.9	$	7.4	$	8.8
Accumulated benefit obligation	$	54.8	$	61.9	$	7.4	$	8.8
Fair value of plan assets	$	4.6	$	5.1	$	—	$	—

Weighted-average assumptions used to determine benefit obligations at December 31:



	Pension Benefits				Health Care Benefits
	2018		2017		2018		2017
Discount rate	4.11	%	3.62	%	3.98	%	3.60	%
Assumed health care cost trend rates at December 31:
Health care cost trend rate assumed for next year	N/A		N/A		6.09	%	6.29	%
Rate to which the cost trend rate is assumed to decline (the ultimate trend rate)	N/A		N/A		4.50	%	4.50	%
Year that the rate reaches the ultimate trend rate	N/A		N/A		2027		2027

The following table summarizes the components of net periodic benefit cost or gain that was recognized during each of the years in the three-year period ended December 31, 2018.



	Pension Benefits									Health Care Benefits
(In millions)	2018			2017			2016			2018			2017			2016
Components of net periodic benefit costs (gains):
Service cost	$	0.6		$	0.6		$	1.0		$	—		$	—		$	—
Interest cost	17.6			19.3			20.7			0.3			0.4			0.5
Expected return on plan assets	(23.8		)	(27.7		)	(31.4		)	—			—			—
Mark-to-market actuarial net losses (gains)	16.2			5.0			(7.8		)	(0.6		)	(1.7		)	(0.6		)
Other	(0.1		)	—			—			—			—			—
Net periodic cost (benefit)	$	10.5		$	(2.8	)	$	(17.5	)	$	(0.3	)	$	(1.3	)	$	(0.1	)

In 2018, we recognized a $15.6 million mark-to-market charge that was primarily a result of actual asset returns that were lower than our assumed returns. Partially offsetting the lower asset returns was the increase in our year end discount rates from 3.62% to 4.11%.

In 2017, we recognized a $3.3 million mark-to-market charge that was primarily a result of the decrease in our year end discount rates, from 3.97% to 3.62%, and updated mortality assumptions, partially offset by a higher than expected return on assets.

In 2016, we recognized an $8.4 million mark-to-market gain that was primarily a result of actual asset returns that were $5.7 million higher than our assumed returns and updated mortality assumptions. Partially offsetting these gains was the decrease in our year end discounts rates, from 4.10% to 3.97%.

Weighted-average assumptions used to determine net periodic benefit cost for the years ended December 31:



	Pension Benefits						Health Care Benefits
	2018		2017		2016		2018		2017		2016
Discount rate*	3.62	%	3.97	%	4.10	%	3.60	%	4.04	%	4.12	%
Expected long-term return on plan assets*	5.09	%	6.08	%	6.87	%	—	%	—	%	—	%
Assumed health care cost trend rates at December 31:
Health care cost trend rate assumed for next year	N/A		N/A		N/A		6.29	%	6.52	%	6.69	%
Rate to which the cost trend rate is assumed to decline (the ultimate trend rate)	N/A		N/A		N/A		4.50	%	4.50	%	4.50	%
Year that the rate reaches the ultimate trend rate	N/A		N/A		N/A		2027		2027		2027


*	The mark-to-market component of net periodic costs is determined based on discount rates as of year-end and actual asset returns during the year.

The expected long-term rate of return on pension assets was determined after considering the historical and forward looking long-term asset returns by asset category and the expected investment portfolio mix.

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. Based on the current funded status of the plan, our pension asset investment allocation guidelines are to invest 83% in fixed income securities and 17% in equity securities. The plan keeps a minimal amount of cash available to fund benefit payments. These investments may include funds of multiple asset investment strategies and funds of hedge funds.

The fair values of pension plan assets at December 31, 2018 and 2017, by asset category, are as follows:



	Fair Value of Plan Assets at December 31, 2018
(In millions)	Quoted Prices in Active Markets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)		Total Investments (at Fair Value)
Asset category
Cash	$	3.7	$	—	$	—	$	3.7
Other	—		—		4.6		4.6
Total	$	3.7	$	—	$	4.6	8.3

Investments measured at NAV:
Common collective funds:
United States equity							14.9
International equity							14.9
Global equity							8.5
Fixed income							387.8
Total common collective funds							426.1

Total investments at fair value							$	434.4



	Fair Value of Plan Assets at December 31, 2017
(In millions)	Quoted Prices in Active Markets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)		Total Investments (at Fair Value)
Asset category
Cash	$	4.3	$	—	$	—	$	4.3
Other	—		—		5.1		5.1
Total	$	4.3	$	—	$	5.1	9.4

Investments measured at NAV:
Common collective funds:
United States equity							19.2
International equity							19.4
Global equity							9.6
Fixed income							427.1
Total common collective funds							$	475.3

Total investments at fair value							$	484.7

Pension Plan Assets

Other assets are primarily insurance contracts for international plans. The U.S. equity common collective funds are predominately invested in equity securities actively traded in public markets. The international and global equity common collective funds have broadly diversified investments across economic sectors and focus on low volatility, long-term investments. The fixed income common collective funds consist primarily of publicly traded United States fixed interest obligations (principally investment grade bonds and government securities).

Level 1 assets are valued based on quoted market prices. Level 2 investments are valued based on quoted market prices and/or other market data for the same or comparable instruments and transactions of the underlying fixed income investments. The insurance contracts included in the other asset category are valued at the transacted price. Common collective funds are valued at the net asset value of units held by the fund at year end. The unit value is determined by the total value of fund assets divided by the total number of units of the fund owned.

The estimated future benefit payments for our pension and health care plans are as follows:



(In millions)	Pension Benefits		Health Care Benefits
2019	$	38.3	$	0.9
2020	37.7		0.8
2021	38.2		0.8
2022	36.2		0.7
2023	35.9		0.7
2024 through 2028	162.4		2.5

We currently estimate that 2019 employer contributions will be $4.3 million to all qualified and non-qualified pension plans and $0.9 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)	2018		2017		2016
Retirement savings match	$	10.1	$	9.1	$	8.2
Retirement benefit contribution	—		1.6		4.0
Total contributions	$	10.1	$	10.7	$	12.2

Commitments And Contingencies

12 Months Ended

Dec. 31, 2018

Commitments and Contingencies Disclosure [Abstract]

Commitments And Contingencies

Note 11 — COMMITMENTS AND CONTINGENCIES

Environmental — We 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 environmental investigation and remediation of certain 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 may also 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 position, results of operations or cash flows.

In September 2007, the United States District Court for the Western District of Kentucky in the case of Westlake Vinyls, Inc. v. Goodrich Corporation, et al., held that PolyOne must pay the remediation costs at the former Goodrich Corporation Calvert City facility (now largely owned and operated by Westlake Vinyls), together with certain defense costs of Goodrich Corporation. The rulings also provided that PolyOne can seek indemnification for contamination attributable to Westlake Vinyls.

Following the Court rulings, the parties to the litigation agreed to settle all claims regarding past environmental costs incurred at the site. The settlement agreement provides a mechanism to pursue allocation of future remediation costs at the Calvert City site to Westlake Vinyls. We will adjust our accrual, in the future, consistent with any such future allocation of costs. Additionally, we continue to pursue available insurance coverage related to this matter and recognize gains as we receive reimbursement.

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. Under the agreement, The Geon Company agreed to indemnify Goodrich Corporation for certain environmental costs at the site. Neither PolyOne nor The Geon Company ever operated the facility.

Since 2009, PolyOne, along with respondents Westlake Vinyls, Inc., and Goodrich Corporation, have worked with the United States Environmental Protection Agency (USEPA) on the investigation of contamination at the site as well as evaluation of potential remedies to address the contamination. The USEPA issued its Record of Decision (ROD) in September 2018, selecting a remedy consistent with our accrual assumptions. In October 2018, the USEPA sent a letter to the respondents inviting negotiation of an agreement to conduct the remedial design; that negotiation is ongoing. Our current reserve of $103.3 million is consistent with the USEPA's estimates contained in the ROD.

On March 13, 2013, PolyOne acquired Spartech Corporation (Spartech). One of Spartech's subsidiaries, Franklin-Burlington Plastics, Inc. (Franklin-Burlington), operated a plastic resin compounding facility in Kearny, New Jersey, located adjacent to the Passaic River. The USEPA requested that companies located in the area of the lower Passaic River, including Franklin-Burlington, cooperate in an investigation of contamination of approximately 17 miles of the lower Passaic River Study Area (the LPRSA). In response, Franklin-Burlington and approximately 70 other companies (collectively, the Cooperating Parties) agreed, pursuant to an Administrative Order on Consent (AOC) with the USEPA, to assume responsibility for development of a Remedial Investigation and Feasibility Study of the LPRSA. Franklin-Burlington has not admitted to any liability or agreed to bear any other costs for remediation or natural resource damage.

In 2015, the Cooperating Parties submitted to the USEPA a remedial investigation report and feasibility study for the LPRSA, and are currently engaged in technical discussions with the USEPA to revise and finalize those documents. Neither of those documents contemplates who is responsible for remediation or how such costs might be allocated to PRPs. In March 2016, the USEPA issued a ROD selecting a remedy for an eight-mile portion of the LPRSA at an estimated and discounted cost of $1.4 billion. On March 31, 2016, the USEPA sent a Notice of Potential Liability to over 100 companies, including Franklin-Burlington, and several municipalities for this eight-mile portion. In September 2016, the USEPA reached an agreement with Occidental Chemical Corporation (OCC), which orders OCC to perform the remedial design for the lower eight mile portion of the Passaic River. In September 2017, the USEPA sent a letter to over 80 companies, including Franklin-Burlington, indicating that the USEPA would engage the recipients in an allocation process for the lower eight miles of the LPRSA, and has engaged a third-party allocator as part of that process. Along with other parties, Franklin-Burlington is participating in the development of this allocation process with the allocator retained by the USEPA, and this process is expected to continue into at least 2019. On June 30, 2018, OCC, independent of the USEPA, filed suit against over 100 named entities, including Franklin-Burlington, seeking contribution for past and future costs associated with the remediation of the lower eight-mile portion of the LPRSA.

Based on the currently available information, we have not identified evidence that Franklin-Burlington contributed any of the primary contaminants of concern to the lower Passaic River. A timeline as to when an allocation of the remedial costs may be determined is not yet known and any allocation to Franklin-Burlington has not been determined. As a result of these uncertainties, we are unable to estimate a liability related to this matter and, as of December 31, 2018, we have not accrued for costs of remediation related to the lower Passaic River.

The Consolidated Balance Sheets include accruals totaling $114.1 million and $117.1 million as of December 31, 2018 and 2017, respectively, based on our estimates of probable future environmental expenditures relating to previously contaminated sites. These undiscounted amounts are included in Accrued expenses and other current 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 currently available information and technology 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, technology development, 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, 2018. However, such additional costs, if any, cannot be currently estimated.

The following table details the changes in the environmental accrued liabilities:



(In millions)	2018			2017			2016
Balance at beginning of the year	$	117.1		$	117.3		$	119.9
Environmental expenses	23.2			14.8			8.3
Net cash payments	(26.0		)	(15.2		)	(11.0		)
Currency translation and other	(0.2		)	0.2			0.1
Balance at end of year	$	114.1		$	117.1		$	117.3

The environmental expenses noted in the table above are included in Cost of sales in the accompanying Consolidated Statements of Income (Loss), as are insurance recoveries received for previously incurred environmental costs. We received insurance recoveries of $4.3 million, $9.1 million and $6.1 million in 2018, 2017 and 2016, respectively. Such insurance recoveries are recognized as a gain when received.

Other Litigation — 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.

Income Taxes

12 Months Ended

Dec. 31, 2018

Income Tax Disclosure [Abstract]

Income Taxes

Note 12 — 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.

Income from continuing operations, before income taxes consists of the following:



(In millions)	2018		2017		2016
Domestic	$	86.3	$	105.6	$	129.1
Foreign	110.9		106.7		97.5
Income from continuing operations, before income taxes	$	197.2	$	212.3	$	226.6

A summary of income tax expense from continuing operations is as follows:



(In millions)	2018			2017			2016
Current income tax expense (benefit):
Domestic - GILTI and U.S. tax reform transition tax	$	3.7		$	24.0		$	—
Domestic - other	10.2			(11.2		)	27.8
Foreign	27.3			27.3			22.5
Total current income tax expense	$	41.2		$	40.1		$	50.3
Deferred income tax (benefit) expense:
Domestic - U.S. tax reform, tax effect on net deferred tax liabilities	$	(6.8	)	$	(20.1	)	$	—
Domestic - other	22.1			27.4			6.0
Foreign	(20.1		)	(8.7		)	4.1
Total deferred income tax (benefit) expense	$	(4.8	)	$	(1.4	)	$	10.1
Total income tax expense	$	36.4		$	38.7		$	60.4

Within the Total deferred income tax benefit, Foreign, was a benefit of $9.3 million and $9.5 million for the year ended December 31, 2018 and 2017, respectively. These benefits related to a 2017 European legal entity realignment.

The Tax Cuts and Jobs Act (TCJA) was enacted on December 22, 2017. Among other things, effective in 2018, the TCJA reduced the US federal corporate tax rate from 35% to 21%, exempts from U.S. federal income taxation dividends from certain foreign corporations to their U.S. shareholders, eliminates or reduces the effect of various federal tax deductions and creates new taxes on certain outbound payments and future foreign earnings generated after 2017. The TCJA required U.S. companies to pay a one-time transition tax on earnings of foreign corporate subsidiaries that were at least ten-percent owned by such U.S. companies and that were previously deferred from U.S. taxation.

As of December 31, 2018, we had completed our accounting for the tax effects of the enactment of the TCJA. In compliance with the one-year measurement period of the SEC's Staff Accounting Bulletin 118 (SAB 118) (issued December 22, 2017), we have finalized the effects of the TCJA on our existing deferred income tax balances, the one-time transition tax and, as discussed below, the impact the TCJA had on our indefinite reinvestment assertion pursuant to Accounting Principles Board 23 (APB 23). These finalized effects are included as components of income tax expense from continuing operations and are noted in the following tabular reconciliation.

As of December 31, 2018, we had completed our analysis with respect to the impact of the TCJA on our continuing assertion that our foreign earnings are indefinitely reinvested pursuant to APB 23 of Accounting Standards Codification 740-30 (ASC 740-30). APB 23 provides guidance that US companies do not need to recognize tax effects on foreign earnings that are indefinitely reinvested. Our assertion has changed with respect to certain earnings of foreign affiliates in certain countries, which resulted in a recognition of tax liabilities. As of December 31, 2018, and noted in the Repatriation of certain foreign earnings from prior and current periods line in the following tabular reconciliation, we recognized an impact of 4.5% to our provision from a decision to repatriate prior year earnings after completing our analysis with respect to the TCJA and 1.2% pertaining to our decision to repatriate certain current year earnings. The rest of our foreign earnings are indefinitely reinvested pursuant to APB 23 and our policy. No deferred income taxes were recorded on outside basis differences as it was not practicable to determine the provision impact, if any, due to the complexities associated with this calculation.

We elected to recognize the resulting tax on the global intangible low-taxed income (GILTI) as a period expense in the period the tax is incurred.

A reconciliation of the applicable U.S. federal statutory tax rate to the consolidated effective income tax rate from continuing operations along with a description of significant or unusual reconciling items is included below.



	2018		2017		2016
Federal statutory income tax rate	21.0	%	35.0	%	35.0	%

Foreign tax rate differential:
Asia	0.2		(1.2	)	(1.2	)
Europe	(6.0	)	(8.6	)	(2.7	)
Canada and Mexico	—		(1.3	)	(1.7	)
Total foreign tax rate differential:	(5.8	)	(11.1	)	(5.6	)

State and local tax, net	2.8		1.4		2.1
Tax on GILTI	1.5		—		—
Repatriation on certain foreign earnings from prior and current periods	5.7		0.4		—
Tax benefits on certain foreign investments	—		(6.8	)	(1.9	)
Domestic production activities deduction	(0.7	)	(1.9	)	(1.5	)
Amended prior period tax returns and corresponding favorable audit adjustments	—		(3.6	)	(1.3	)
Net impact of uncertain tax positions	(0.4	)	2.2		(1.1	)
Changes in valuation allowances	(1.8	)	0.7		0.4
U.S. tax reform, transition tax	0.8		11.3		—
U.S. tax reform, tax effect on net deferred tax liabilities	(3.5	)	(9.5	)	—
Other	(1.1	)	0.1		0.6
Effective income tax rate	18.5	%	18.2	%	26.7	%

The effective tax rates for all periods differed from the applicable U.S. federal statutory tax rate as a result of permanent items, state and local income taxes, differences in foreign tax rates and certain unusual items. Permanent items primarily consist of income or expense not taxable or deductible. Significant or unusual items impacting the effective income tax rate are described below.

2018 Significant items

The increase in the Repatriation on certain foreign earnings from prior and current periods line item resulted from a decision to repatriate certain foreign earnings from current and prior periods.

The benefit reflected in the Changes in valuation allowances line resulted from the realizability of a deferred tax asset for one of our foreign entities.

2017 Significant items

The increase in the Foreign tax rate differential line item in the table above, compared to 2016, primarily related to a European legal entity realignment.

Tax benefits on certain foreign investments decreased the effective tax rate by 6.8% ($14.4 million) related to distributions from foreign subsidiaries with net foreign tax credits.

Components of our deferred tax assets (liabilities) as of December 31, 2018 and 2017 were as follows:



(In millions)	2018			2017
Deferred tax assets:
Pension and other post-retirement benefits	$	8.2		$	7.3
Employment costs	20.1			22.0
Environmental reserves	29.0			29.4
Net operating loss carryforwards	48.8			42.3
Other, net	39.8			20.0
Gross deferred tax assets	$	145.9		$	121.0
Valuation allowances	(15.2		)	(21.4		)
Total deferred tax assets, net of valuation allowances	$	130.7		$	99.6

Deferred tax liabilities:
Property, plant and equipment	$	(33.9	)	$	(20.7	)
Goodwill and intangibles	(101.5		)	(98.7		)
Other, net	(14.4		)	(1.0		)
Total deferred tax liabilities	$	(149.8	)	$	(120.4	)

Net deferred tax (liabilities) assets	$	(19.1	)	$	(20.8	)

Consolidated Balance Sheets:
Non-current deferred income tax assets	$	50.2		$	19.5
Non-current deferred income tax liabilities	$	(69.3	)	$	(40.3	)

As of December 31, 2018, we had gross state net operating loss carryforwards of $151.7 million that expire between 2019 and 2033. Various foreign subsidiaries have gross net operating loss carryforwards totaling $152.3 million that expire between 2019 and 2037 with limited exceptions that have indefinite carryforward periods. Total tax valuation allowances decreased $6.2 million from the prior year primarily due to the ability to realize net operating loss carryforwards at a certain foreign entity based on expected future profitability. We have provided valuation allowances of $15.1 million against certain foreign and state net operating loss carryforwards that are expected to expire prior to utilization.

We decided to repatriate certain current and prior year foreign earnings, which we have received in 2018 or will receive in the future, for which the provision impact (5.7%) has been included in the tabular rate reconciliation and in Other, net deferred tax liabilities ($8.2 million) above. No provision has been made for income taxes on the undistributed earnings of certain consolidated non-U.S. subsidiaries, primarily in Europe, of approximately $350 million as of December 31, 2018 as these amounts, consistent with our policy, continue to be indefinitely reinvested.

We made worldwide income tax payments of $46.5 million and received refunds of $29.9 million in 2018. We made worldwide income tax payments of $56.5 million and $50.3 million in 2017 and 2016, respectively, and received refunds of $6.7 million and $2.4 million in 2017 and 2016, respectively.

The Company records provisions for uncertain tax positions in accordance with ASC Topic 740, Income Taxes. A reconciliation of unrecognized tax benefits is as follows:



	Unrecognized Tax Benefits
(In millions)	2018			2017			2016
Balance as of January 1,	$	18.6		$	7.9		$	11.3
Increases as a result of positions taken during current year	1.3			9.2			0.3
Increases as a result of positions taken for prior years	1.1			1.8			1.2
Balance related to acquired businesses	—			—			—
Reductions for tax positions of prior years	(2.8		)	(0.3		)	—
Decreases as a result of lapse of statute of limitations	(0.2		)	(0.2		)	(4.2		)
Decreases relating to settlements with taxing authorities	(1.4		)	—			(0.3		)
Other, net	0.1			0.2			(0.4		)
Balance as of December 31,	$	16.7		$	18.6		$	7.9

We recognize interest and penalties related to uncertain tax positions in the provision for income taxes. As of December 31, 2018 and 2017, we had $2.5 million and $3.9 million accrued for interest and penalties, respectively.

Although the timing and outcome of tax settlements are uncertain, it is reasonably possible that during the next twelve months a reduction in unrecognized tax benefits may occur up to $1.2 million based on the outcome of tax examinations and the expiration of statutes of limitations.

If all unrecognized tax benefits were recognized, the net impact on the provision for income tax expense would be a benefit of $10.9 million.

The Company is currently being audited by federal, state and foreign taxing jurisdictions. With the exception of amended tax returns for 2004 to 2012, which are limited in scope to foreign tax credits, we are no longer subject to U.S. federal income tax examinations for periods preceding 2013. With limited exceptions, we are no longer subject to state tax and foreign tax examinations for periods preceding 2013.

For the income tax benefit associated with the July 19, 2017 sale of DSS, refer to Note 3, Discontinued Operations.

Share-Based Compensation

12 Months Ended

Dec. 31, 2018

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Share-Based Compensation

Note 13 — 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 (Loss) 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 and therefore has been reduced for estimated forfeitures.

Equity and Performance Incentive Plans

The PolyOne Corporation 2017 Equity and Incentive Compensation Plan reserved 2.5 million common shares 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). 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 (Loss). A summary of compensation expense by type of award follows:



(In millions)	2018		2017		2016
Stock appreciation rights	$	4.4	$	4.2	$	3.3
Performance shares	0.6		0.6		—
Restricted stock units	5.9		5.3		4.4
Total share-based compensation	$	10.9	$	10.1	$	7.7

Stock Appreciation Rights

During the years ended December 31, 2018, 2017 and 2016, the total number of SARs granted were 0.3 million, 0.5 million and 0.5 million, respectively. Awards vest in one-third increments upon the later of the attainment of time-based vesting over a three-year service period and stock price targets. Awards granted in 2018, 2017 and 2016 are subject to an appreciation cap of 200% of the base price. SARs have contractual terms of ten years from the date of the grant.

The SARs were valued using a Monte Carlo simulation method as the vesting is dependent on the achievement of certain stock price targets. The SARs have time and market-based vesting conditions but vest no earlier than their three year graded vesting schedule. The expected term is an output from the Monte Carlo model, and are derived from employee exercise assumptions that are based on PolyOne historical exercise experience. 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 following is a summary of the weighted average assumptions related to the grants issued during 2018, 2017 and 2016:



	2018	2017	2016
Expected volatility	41.0%	41.0%	41.0%
Expected dividends	1.67%	1.58%	1.92%
Expected term (in years)	6.5	6.5	6.7
Risk-free rate	3.06%	2.72%	1.90%
Value of SARs granted	$14.82	$12.01	$8.29

A summary of SAR activity for 2018 is presented below:



Stock Appreciation Rights (In millions, except per share data)	Shares		Weighted-Average Exercise Price Per Share		Weighted-Average Remaining Contractual Term	Aggregate Intrinsic Value
Outstanding as of January 1, 2018	1.8		$	28.62	6.85	$	27.0
Granted	0.3		41.89
Exercised	(0.3	)	21.83
Forfeited or expired	—		37.31
Outstanding as of December 31, 2018	1.8		$	32.14	6.77	$	4.0
Vested and exercisable as of December 31, 2018	1.0		$	28.83	5.67	$	3.5

The total intrinsic value of SARs exercised during 2018, 2017 and 2016 was $6.5 million, $7.6 million and $2.8 million, respectively. As of December 31, 2018, there was $2.7 million of total unrecognized compensation cost related to SARs, which is expected to be recognized over the weighted average remaining vesting period of 23 months.

Restricted Stock Units

RSUs represent contingent rights to receive one common share at a future date provided certain vesting criteria are met.

During 2018, 2017 and 2016, the total number of RSUs granted were 0.2 million, 0.3 million and 0.2 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, 2018, 0.6 million RSUs remain unvested with a weighted-average grant date fair value of $34.80. Unrecognized compensation cost for RSUs at December 31, 2018 was $8.1 million, which is expected to be recognized over the weighted average remaining vesting period of 21 months.

Segment Information

12 Months Ended

Dec. 31, 2018

Segment Reporting [Abstract]

Segment Information

Note 14 — SEGMENT INFORMATION

Operating income is the primary measure that is reported to our chief operating decision maker (CODM) for purposes of allocating resources to the segments and assessing their performance. Operating income at the segment level does not include: corporate general and administrative expenses that are not allocated to segments; intersegment sales and profit eliminations; charges related to specific strategic initiatives such as the consolidation of operations; restructuring activities, including employee separation costs resulting from personnel reduction programs, plant closure and phase-in costs; executive separation agreements; share-based compensation costs; asset impairments; environmental remediation costs, along with related gains from insurance recoveries, 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 CODM. These costs are included in Corporate and eliminations.

Segment assets are primarily customer receivables, inventories, net property, plant and equipment, intangible assets and goodwill. Intersegment sales are generally accounted for at prices that approximate those for similar transactions with unaffiliated customers. Corporate and eliminations assets and liabilities primarily include cash, debt, pension and other employee benefits, 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.

PolyOne has four reportable segments. Previously, PolyOne had five reportable segments. However, as a result of the divestiture of DSS, we have removed DSS as a separate operating segment and its results are presented as a discontinued operation. Historical information has been retrospectively adjusted to reflect these changes.

The following is a description of each of our four reportable segments.

Color, Additives and Inks

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 polymer resins, 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, including UV light stabilization and blocking, antimicrobial, anti-static, blowing or foaming, antioxidant, lubricant, oxygen and visible light blocking 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 polyester, vinyl, natural rubber and latex, polyurethane and silicone. Our offerings also include 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. Color, Additives and Inks has manufacturing, sales and service facilities located throughout North America, South America, Europe and Asia.

Specialty Engineered Materials

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. We also have what we believe is the broadest composite platform of solutions, which include a full range of products from long glass and carbon fiber technology to thermoset and thermoplastic composites. These solutions meet a wide variety of unique customer requirements for light weighting. 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. Specialty Engineered Materials has manufacturing, sales and service facilities located throughout North America, Europe, and Asia. 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.

Performance Products and Solutions

Performance Products and Solutions is comprised of the Geon Performance Materials (Geon) 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 GeonTM brand name carries strong recognition globally. Geon's 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: healthcare, wire and cable, 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 formulations for certain applications. As a strategic and integrated supply chain partner, Producer Services offers resin producers a capital-efficient way to effectively develop custom products for niche markets by leveraging its extensive process technology expertise, broad manufacturing capabilities and geographic locations.

Distribution

The Distribution business distributes more than 4,000 grades of engineering and commodity grade resins, including PolyOne-produced solutions, principally to the North American, Central American and Asian markets. These products are sold to over 6,500 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. Expansion in Central America and Asia have bolstered Distribution's ability to serve the specialized needs of customers globally.

Financial information by reportable segment is as follows:



Year Ended December 31, 2018 (In millions)	Sales to External Customers		Intersegment Sales			Total Sales			Operating Income			Depreciation and Amortization		Capital Expenditures		Total Assets
Color, Additives and Inks	$	1,040.6	$	5.9		$	1,046.5		$	158.5		$	44.3	$	22.9	$	1,235.1
Specialty Engineered Materials	593.6		52.2			645.8			72.3			23.2		25.2		596.2
Performance Products and Solutions	652.4		83.4			735.8			73.6			15.9		19.5		275.4
Distribution	1,246.8		18.6			1,265.4			71.5			0.7		0.1		249.0
Corporate and eliminations	—		(160.1		)	(160.1		)	(102.2		)	4.4		8.3		367.6
Total	$	3,533.4	$	—		$	3,533.4		$	273.7		$	88.5	$	76.0	$	2,723.3



Year Ended December 31, 2017 (In millions)	Sales to External Customers		Intersegment Sales			Total Sales			Operating Income			Depreciation and Amortization		Capital Expenditures		Total Assets
Color, Additives and Inks	$	877.7	$	15.5		$	893.2		$	138.6		$	41.2	$	21.2	$	1,146.8
Specialty Engineered Materials	574.8		49.5			624.3			75.5			21.1		23.4		545.1
Performance Products and Solutions	639.6		81.0			720.6			77.1			15.5		17.2		275.8
Distribution	1,137.8		16.8			1,154.6			72.6			0.8		0.5		250.9
Corporate and eliminations	—		(162.8		)	(162.8		)	(91.0		)	4.2		9.3		486.7
Total	$	3,229.9	$	—		$	3,229.9		$	272.8		$	82.8	$	71.6	$	2,705.3



Year Ended December 31, 2016 (In millions)	Sales to External Customers		Intersegment Sales			Total Sales			Operating Income			Depreciation and Amortization		Capital Expenditures		Total Assets
Color, Additives and Inks	$	778.9	$	18.8		$	797.7		$	127.5		$	40.2	$	20.6	$	923.8
Specialty Engineered Materials	516.4		49.4			565.8			81.1			18.3		19.4		542.8
Performance Products and Solutions	589.2		79.3			668.5			74.4			15.0		12.4		241.8
Distribution	1,054.1		16.9			1,071.0			68.2			0.7		0.2		207.0
Corporate and eliminations	—		(164.4		)	(164.4		)	(83.5		)	4.0		13.0		386.5
Assets Held for Sale	—		—			—			—			25.8		18.6		433.9
Total	$	2,938.6	$	—		$	2,938.6		$	267.7		$	104.0	$	84.2	$	2,735.8

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. The 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)	2018		2017		2016
Sales:
United States	$	2,030.4	$	1,910.8	$	1,767.8
Europe	549.9		455.7		415.2
Canada	255.0		251.1		237.7
Asia	346.4		313.4		266.9
Mexico	331.7		279.8		233.7
South America	20.0		19.1		17.3
Total Sales	$	3,533.4	$	3,229.9	$	2,938.6

Long lived assets:
United States	$	290.0	$	279.7	$	268.3
Europe	116.4		97.0		86.6
Canada	10.7		8.2		7.2
Asia	58.9		56.2		44.6
Mexico	17.7		18.5		18.5
South America	1.7		2.0		1.1
Total Long lived assets	$	495.4	$	461.6	$	426.3

Derivatives and Hedging

12 Months Ended

Dec. 31, 2018

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Derivatives and Hedging

Note 15 — DERIVATIVES AND HEDGING

We are exposed to market risks, such as changes in foreign currency exchange rates and interest rates. To manage the volatility related to these exposures we may enter into various derivative transactions. As of December 31, 2018, we had derivatives designated as net investment hedging and cash flow hedging instruments.

Net Investment Hedge

During October and December of 2018, as a means of mitigating the impact of currency fluctuations on our Euro investments in foreign entities, we executed a total of six cross currency swaps, in which we will pay fixed-rate interest in Euros and receive fixed-rate interest in U.S. dollars with a combined notional amount of 250.0 million Euros and which mature in March 2023. This effectively converts a portion of our U.S. Dollar denominated fixed-rate debt to Euro denominated fixed-rate debt. That conversion resulted in a benefit of $2.0 million for the year ended December 31, 2018, which was recognized within Interest expense, net within the Condensed Consolidated Statements of Income.

We designated the swaps as net investment hedges of our net investment in our European operations under ASU 2017-12 and applied the spot method to these hedges. For the year ended December 31, 2018, a $2.0 million gain was recognized within translation adjustments in AOCI, net of tax.

Cash Flow Hedging Instruments

In August 2018, we entered into two interest rate swaps with a combined notional amount of $150.0 million to manage the variability of cash flows in the interest rate payments associated with our existing LIBOR-based interest payments, effectively converting $150.0 million of our floating rate debt to a fixed rate. We began to receive floating rate interest payments based upon one month U.S. dollar LIBOR and in return are obligated to pay interest at a fixed rate of 2.732% until November 2022. We have designated these swap contracts as cash flow hedges pursuant to ASC 815, Derivatives and Hedging. For the year ended December 31, 2018, the amount of expense recognized within Interest expense, net in our Consolidated Statements of Income (Loss) was $0.3 million and $1.3 million of loss was recognized in AOCI, net of tax.

All of our derivative assets and liabilities measured at fair value are classified as Level 2 within the fair value hierarchy. We determine the fair value of our derivatives based on valuation methods, which project future cash flows and discount the future amounts present value using market based observable inputs, including interest rate curves and foreign currency rates. The fair value of derivative financial instruments recognized in the Condensed Consolidated Balance Sheets is as follows:



(In millions)	Balance Sheet Location	December 31, 2018		December 31, 2017
Assets
Cross Currency Swaps (Net Investment Hedge)	Other non-current assets	$	2.6	$	—
Liabilities
Interest Rate Swap (Fair Value Hedge)	Other non-current liabilities	$	1.7	$	—

Selected Quarterly Financial Data (Unaudited)

12 Months Ended

Dec. 31, 2018

Selected Quarterly Financial Information [Abstract]

Selected Quarterly Financial Data (Unaudited)

Note 16 — SELECTED QUARTERLY FINANCIAL DATA (UNAUDITED)



	2018 Quarters								2017 Quarters
(In millions, except per share data)	Fourth ⁽²⁾		Third ⁽³⁾		Second ⁽⁴⁾		First ⁽⁵⁾		Fourth⁽⁶⁾		Third ⁽⁷⁾		Second ⁽⁸⁾		First ⁽⁹⁾
Sales	$	834.0	$	883.0	$	914.8	$	901.6	$	800.6	$	818.5	$	814.1	$	796.7
Gross Margin	165.0		184.9		196.5		198.5		169.3		179.5		187.9		182.2
Operating income	47.0		70.5		77.4		78.8		47.1		65.7		78.0		82.0
Net income from continuing operations	11.4		50.2		51.5		47.7		35.5		40.2		49.6		48.3
Net income from continuing operations attributable to PolyOne shareholders	$	11.6	$	50.2	$	51.6	$	47.7	$	35.4	$	40.2	$	49.6	$	48.3

Net income from continuing operations per common share attributable to PolyOne common shareholders: ⁽¹⁾
Basic earnings per share	$	0.15	$	0.63	$	0.65	$	0.59	$	0.44	$	0.50	$	0.61	$	0.58
Diluted earnings per share	$	0.15	$	0.62	$	0.64	$	0.59	$	0.43	$	0.49	$	0.60	$	0.58


(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 2018 are: 1) mark-to-market pension and other post-retirement charge of $15.6 million, 2) environmental remediation costs of $3.9 million and 3) acquisition related costs and adjustments of $2.0 million.


(3)	Included for the third quarter 2018 are: 1) environmental remediation costs of $7.5 million and 2) a gain related to the reimbursement of previously incurred environmental costs of $1.5 million.


(4)	Included for the second quarter 2018 are: 1) environmental remediation costs of $8.7 million, 2) acquisition related costs and adjustments of $1.9 million and 3) a gain related to the reimbursement of previously incurred environmental costs of $1.6 million.


(5)	Included for the first quarter 2018 are: 1) environmental remediation costs of $3.1 million and 2) acquisition related costs and adjustments of $1.9 million.


(6)	Included for the fourth quarter 2017 are: 1) tax adjustments primarily associated with the Tax Cuts and Jobs Act of $10.7 million and 2) a mark-to-market pension and other post-retirement charge of $3.3 million.


(7)	Included for the third quarter 2017 are: 1) acquisition related costs and adjustments of $2.6 million, 2) environmental remediation costs of $4.9 million and 3) a gain related to the reimbursement of previously incurred environmental costs of $2.5 million.


(8)	Included for the second quarter 2017 are: 1) environmental remediation costs of $5.0 million and 2) a gain related to the reimbursement of previously incurred environmental costs of $3.8 million.


(9)	Included for the first quarter 2017 are environmental remediation costs of $2.2 million.

Subsequent Events	12 Months Ended
Subsequent Events	Dec. 31, 2018
Subsequent Events [Abstract]
Subsequent Events	Note 17 — SUBSEQUENT EVENTS On January 2, 2019, the Company completed the acquisition of Fiber-Line for $120.2 million, subject to a working capital adjustment and contingent earn-out consideration over a two-year period. The Fiber-Line results will be reported in the Specialty Engineered Materials segment.

Description of Business and Summary of Significant Accounting Policies (Policy)	12 Months Ended
	Dec. 31, 2018
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Accounting Standards Adopted and Accounting Standards Not Yet Adopted	Accounting Standards Adopted On January 1, 2018, the Company adopted Accounting Standards Codification (ASC) 606, Revenue from Contracts with Customers and all related amendments (the Standard), for all contracts using the modified retrospective method. The Standard implements a five-step process for revenue recognition that focuses on transfer of control and defines a contract as “an agreement between two or more parties that creates legally enforceable rights and obligations.” The adoption of the Standard did not materially impact the timing and measurement of revenue recognition. Additionally, we concluded that the methodology for which we historically estimated and recognized variable consideration (e.g., rebates) is consistent with the requirements of the Standard. As a result, we did not recognize a cumulative effect adjustment to the opening balance of retained earnings. At contract inception, PolyOne assesses the goods and services promised to a customer and identifies a performance obligation for each promised good or service that is distinct. Our contracts, generally in the form of purchase orders or written contracts, specify the product or service that is promised to the customer. The typical contract life is less than 12 months and contains only one performance obligation, to provide conforming goods or services to the customer. Revenue is recognized at the point in time when control of the product is transferred to the customer, which typically occurs when products are shipped from our facilities with the exception of certain contract manufacturing arrangements. The revenue streams within the Company are consistent with those disclosed for our reportable segments, within Note 14, Segment Information. For descriptions of our product offerings and segments see Note 14, Segment Information. We offer more than 35,000 polymer solutions to over 10,000 customers across the world. No customer accounts for more than 3% of our consolidated revenues and we do not have a high concentration of business in one particular end market. In March 2017, the Financial Accounting Standards Board (FASB) issued Accounting Standards Update (ASU) 2017-07, Compensation - Retirement Benefits (Topic 715): Improving the Presentation of Net Periodic Pension Cost and Net Periodic Postretirement Benefit Cost (ASU 2017-07). This standard requires the presentation of the service cost component of the net periodic benefit cost in the same income statement line item as other employee compensation costs arising from services rendered during the period. All other components of net periodic benefit cost must be presented below operating income. The Company has adopted ASU 2017-07 on January 1, 2018. ASU 2017-07 provides a practical expedient to utilize previously disclosed components of net periodic benefit costs as an estimate for retrospective presentation. Utilizing this practical expedient, the Company reclassified non-service components of net periodic benefit cost from Cost of sales and Selling and administrative expense into Other income, net on the Consolidated Statements of Income. The adoption of ASU 2017-07 resulted in $9.6 million of costs for the year ended December 31, 2018 and gains of $4.7 million, and $18.6 million for the years ended December 31, 2017 and 2016, respectively, of the non-service components of net periodic benefit presented in Other income, net. For additional detail on the components of our annual net periodic benefit cost, see Note 10, Employee Benefit Plans. In October 2016, the FASB issued ASU 2016-16, Income Taxes (Topic 740), Intra-Entity Transfers of Assets Other than Inventory (ASU 2016-16), which requires companies to recognize the income tax effects of intercompany sales or transfers of assets, other than inventory, in the income statement as income tax expense or benefit in the period the sale or transfer occurs. We recognized an adjustment of $17.0 million to beginning retained earnings upon adoption of this standard on January 1, 2018 from transactions completed as of December 31, 2017. In August 2017, the FASB issued ASU 2017-12, Derivatives and Hedging (Topic 815): Targeted Improvements to Accounting for Hedging Activities (ASU 2017-12). This amendment to the hedge accounting model better aligns an entity's risk management activities with its financial reporting by expanding an entity's ability to hedge risk components, eliminating the separate measurement and reporting of hedge ineffectiveness and reducing the complexity of applying certain aspects of hedge accounting. The Company has early adopted ASU 2017-12 as of July 1, 2018. For additional disclosure and detail on the hedge relationships entered into by the Company, see Note 15, Derivatives and Hedging. Accounting Standards Not Yet Adopted In February 2016, the FASB issued ASU 2016-02, Leases (Topic 842) (ASU 2016-02). ASU 2016-02 was issued to increase transparency and comparability among entities by recognizing lease assets and lease liabilities on the balance sheet and disclosing key information about lease arrangements. ASU 2016-02 is effective for public companies for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2018. We will adopt the new standard on the required effective date of January 1, 2019 using the transition option, “Comparatives Under 840 Option,” established by ASU 2018-11, Leases (Topic 842), Targeted Improvements (ASU 2018-11). This transition option was released by the FASB to reduce the cost and complexity associated with reflecting the new standard in prior periods presented. We will also elect the practical expedient package related to the identification, classification and accounting for initial direct costs whereby prior conclusions do not have to be reassessed for leases that commenced before the effective date. As we will not reassess such conclusions, the Company does not plan to adopt the practical expedient to use hindsight to determine the likelihood of whether a lease will be extended, terminated or whether a purchase option will be exercised. A cross-functional implementation team is finalizing policy elections, the discount rate to be used based on January 1, 2019 data, and business processes and controls to support recognition and disclosure under the new standard. The primary impact upon adoption will be the recognition of right of use assets and lease obligations, on a discounted basis, of our minimum lease obligations, as disclosed in Note 6, Leasing Arrangements. We currently do not expect ASU 2016-12 to have a material effect on our Consolidated Statements of Income. In June 2016, the FASB issued ASU 2016-13, Financial Instruments - Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments (ASU 2016-13). ASU 2016-13 changes the impairment model for most financial instruments. Current guidance requires the recognition of credit losses based on an incurred loss impairment methodology that reflects losses once the losses are probable. Under ASU 2016-13, the Company will be required to use a current expected credit loss model (CECL) that will immediately recognize an estimate of credit losses that are expected to occur over the life of the financial instruments that are in the scope of this update, including trade receivables. The CECL model uses a broader range of reasonable and supportable information in the development of credit loss estimates. This guidance becomes effective for the Company on January 1, 2020, including the interim periods in the year. The Company is currently evaluating the impact that the adoption of this ASU will have on the consolidated financial statements and related disclosures.
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. Transactions with related parties, including joint ventures, are in the ordinary course of business. Historical information has been retrospectively adjusted to reflect the classification of discontinued operations.
Reclassifications	Reclassifications Certain reclassifications of the prior period amounts and presentation have been made to conform to the presentation for the current period for the adoption of ASU 2017-07 as further described in the Accounting Standards Adopted section of this Note.
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, each of which are adjusted if specific circumstances change. We reserve for amounts determined to be uncollectible based on a specific customer’s inability to meet its financial obligation to us. We also record a general reserve based on the age of receivables past due, economic conditions and historical experience. In estimating the allowance, we take into consideration the existence of credit insurance.
Inventories	Inventories External purchases of raw materials and finished goods are valued at weighted average cost. Raw materials and finished goods 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 generally ranges from 3 to 15 years for machinery and equipment and up to 40 years for buildings. We depreciate certain assets associated with closing manufacturing locations over a shortened life (through the cease-use date). 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 (Loss).
Leases	We account for operating and capital leases under the provisions of FASB Accounting Standards Codification (ASC) Topic 840, Leases.
Intangible Assets	Finite-lived intangible assets, which consist primarily of customer relationships, patents and technology are amortized over their estimated useful lives. The remaining useful lives range up to 20 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 In accordance with the provisions of FASB ASC Topic 350, Intangibles — Goodwill and Other, we assess the fair value of goodwill, quantitatively or qualitatively, on an annual basis or at an interim date if potential impairment indicators are present. 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, quantitatively or qualitatively, at the reporting unit level. Our reporting units have been identified at the operating segment level, or in most 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 indefinite-lived intangibles is October 1. We completed our testing of impairment as of October 1, noting no impairment in 2018, 2017 or 2016. There are no reporting units identified as at-risk of future impairment. 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, 2019. We test our goodwill either quantitatively or qualitatively for impairment. For our quantitative approach, 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. A qualitative approach for both goodwill and indefinite-lived intangible assets is performed if the last quantitative test exceeded certain thresholds. During our qualitative approach, we assess whether the existence of events or circumstances lead to a determination that it is more likely than not that the fair value of a reporting unit is less than its carrying amount. If, after assessing the totality of events and circumstances, we determine it is more likely than not that the fair value is less than carrying value, a quantitative impairment test is performed for each asset, as described above. Indefinite-lived intangible assets primarily consist of the GLS, ColorMatrix and Gordon Composites trade names. Indefinite-lived intangible assets are tested, quantitatively or qualitatively, for impairment annually at the same time we test goodwill for impairment. For our quantitative approach, the implied fair value of indefinite-lived intangible assets is determined based on significant unobservable inputs, as summarized below. 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 using a weighted-average cost of capital that is determined based on current market conditions. This fair value is then compared with the carrying value of the trade name.
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 recognize 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 and to changes in cash flows due to changes in our contractually specified interest rates (e.g, LIBOR) 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. We formally assess, designate and document, as a hedge of an underlying exposure, the qualifying derivative instrument that will be accounted for as an accounting hedge at inception. Additionally, in accordance with ASU 2017-12, we assess at inception whether the financial instruments used in the hedging transaction are highly effective at offsetting changes in either the fair values or cash flows of the underlying exposures. If highly effective, any subsequent test may be done qualitatively. The net interest payments accrued each month for effective instruments designated as a hedge are reflected in net income as adjustments of interest expense and the remaining change in the fair value of the derivatives is recorded as a component of Accumulated Other Comprehensive Income (AOCI). Instruments not designated as hedges are adjusted to fair value at each period end, with the resulting gains and losses recognized in the accompanying Consolidated Statements of Income (Loss) 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. We immediately recognize actuarial gains and losses 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.
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 long-term investments, are included in Other income (expense), net in the accompanying Consolidated Statements of Income (Loss).
Revenue Recognition	Revenue Recognition We recognize revenue once control of the product is transferred to the customer, which typically occurs when products are shipped from our facilities.
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 of $56.3 million in 2018, $52.1 million in 2017 and $50.4 million in 2016 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. 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 they are collected.
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 (Loss).
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 Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2018

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Accumulated Other Comprehensive Loss

Changes in accumulated other comprehensive loss in 2018, 2017 and 2016 were as follows:



(In millions)	Cumulative Translation Adjustment and Related Hedging Instruments			Pension and other post-retirement benefits		Cash Flow Hedges			Other			Total
Balance at January 1, 2016	$	(76.8	)	$	5.2	$	—		$	0.3		$	(71.3	)
Translation adjustments	(23.0		)	—		—			—			(23.0		)
Unrealized gain	—			—		—			0.1			0.1
Balance at December 31, 2016	(99.8		)	5.2		—			0.4			(94.2		)
Translation adjustments	41.2			—		—			—			41.2
Balance at December 31, 2017	(58.6		)	5.2		—			0.4			(53.0		)
Translation adjustments	(25.6		)	—		—			—			(25.6		)
Unrealized losses	(2.0		)	—		(1.3		)	—			(3.3		)
Other	—			—		—			(0.4		)	(0.4		)
Balance at December 31, 2018	$	(86.2	)	$	5.2	$	(1.3	)	$	—		$	(82.3	)

Business Combinations (Tables)

12 Months Ended

Dec. 31, 2018

Business Combinations [Abstract]

Finite-Lived and Indefinite-Lived Intangible Assets Acquired as Part of Business Combination

The fair value of intangible assets acquired during the year ended December 31, 2018, including their estimated useful lives and valuation methodology are as follows:



(in millions)	Fair Value		Useful Life	Valuation Method
Customer relationships	$	21.1	18	Multi-period excess earnings
Patents, technology and other	29.9		13 - 24	Relief-from-royalty method
Total	$	51.0

Discontinued Operations (Tables)

12 Months Ended

Dec. 31, 2018

Discontinued Operations and Disposal Groups [Abstract]

Disposal Groups, Including Discontinued Operations



(In millions)	2018			2017			2016
Sales	$	—		$	222.1		$	401.2

Loss on sale	$	(1.8	)	$	(295.6	)	$	—
Loss from operations	—			(8.6		)	(4.3		)
Loss before taxes	(1.8		)	(304.2		)	(4.3		)
Income tax benefit	0.5			73.0			3.1
Loss from discontinued operations, net of taxes	$	(1.3	)	$	(231.2	)	$	(1.2	)

- Definition

Tabular disclosure of information related to a disposal group. Includes, but is not limited to, a discontinued operation, disposal classified as held-for-sale or disposed of by means other than sale or disposal of an individually significant component.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 360
-SubTopic 10
-Section 50
-Paragraph 3A
-URI http://asc.fasb.org/extlink&oid=109226691&loc=SL51724579-110230

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 205
-SubTopic 20
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=109222650&loc=d3e1474-107760

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 205
-SubTopic 20
-Section 50
-Paragraph 5D
-URI http://asc.fasb.org/extlink&oid=109222650&loc=SL51721677-107760

Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 205
-SubTopic 20
-Section 45
-Paragraph 11
-URI http://asc.fasb.org/extlink&oid=109222160&loc=SL51721533-107759

Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 205
-SubTopic 20
-Section 50
-Paragraph 3A
-URI http://asc.fasb.org/extlink&oid=109222650&loc=SL51721659-107760

Reference 6: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 205
-SubTopic 20
-Section 50
-Paragraph 4B
-URI http://asc.fasb.org/extlink&oid=109222650&loc=SL51721665-107760

Reference 7: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 360
-SubTopic 10
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=109226691&loc=d3e2941-110230

Reference 8: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 205
-SubTopic 20
-Section 50
-Paragraph 5C
-URI http://asc.fasb.org/extlink&oid=109222650&loc=SL51721675-107760

Reference 9: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 205
-SubTopic 20
-Section 50
-Paragraph 7
-URI http://asc.fasb.org/extlink&oid=109222650&loc=SL51721683-107760

Reference 10: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 205
-SubTopic 20
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=109222650&loc=d3e1361-107760

Reference 11: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 205
-SubTopic 20
-Section 50
-Paragraph 5A
-URI http://asc.fasb.org/extlink&oid=109222650&loc=SL51721671-107760

Reference 12: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 205
-SubTopic 20
-Section 50
-Paragraph 5B
-URI http://asc.fasb.org/extlink&oid=109222650&loc=SL51721673-107760

Reference 13: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 205
-SubTopic 20
-Section 50
-Paragraph 4A
-URI http://asc.fasb.org/extlink&oid=109222650&loc=SL51721663-107760

+ Details

Goodwill And Intangible Assets (Tables)

12 Months Ended

Dec. 31, 2018

Goodwill and Intangible Assets Disclosure [Abstract]

Goodwill By Operating Segment

Goodwill as of December 31, 2018 and 2017 and changes in the carrying amount of goodwill by segment were as follows:



(In millions)	Specialty Engineered Materials			Color, Additives and Inks			Performance Products and Solutions		PolyOne Distribution		Total
Balance at January 1, 2017	173.5			346.4			11.2		1.6		532.7
Acquisition of businesses	—			77.0			—		—		77.0
Currency translation	(0.3		)	1.1			—		—		0.8
Balance at December 31, 2017	173.2			424.5			11.2		1.6		610.5
Acquisition of businesses	16.3			25.8			—		—		42.1
Currency translation	(0.6		)	(1.7		)	—		—		(2.3		)
Balance at December 31, 2018	$	188.9		$	448.6		$	11.2	$	1.6	$	650.3

Carrying Value And Accumulated Amortization Of Intangible Assets

Indefinite and finite-lived intangible assets consisted of the following:



	As of December 31, 2018
(In millions)	Acquisition Cost		Accumulated Amortization			Currency Translation			Net
Customer relationships	$	278.4	$	(75.0	)	$	(0.7	)	$	202.7
Patents, technology and other	188.1		(66.8		)	(0.9		)	120.4
Indefinite-lived trade names	100.3		—			—			100.3
Total	$	566.8	$	(141.8	)	$	(1.6	)	$	423.4



	As of December 31, 2017
(In millions)	Acquisition Cost		Accumulated Amortization			Currency Translation		Net
Customer relationships	$	257.3	$	(61.5	)	$	0.1	$	195.9
Patents, technology and other	158.2		(54.4		)	—		103.8
Indefinite-lived trade names	100.3		—			—		100.3
Total	$	515.8	$	(115.9	)	$	0.1	$	400.0

Schedule of Indefinite-Lived Intangible Assets

Indefinite and finite-lived intangible assets consisted of the following:



	As of December 31, 2018
(In millions)	Acquisition Cost		Accumulated Amortization			Currency Translation			Net
Customer relationships	$	278.4	$	(75.0	)	$	(0.7	)	$	202.7
Patents, technology and other	188.1		(66.8		)	(0.9		)	120.4
Indefinite-lived trade names	100.3		—			—			100.3
Total	$	566.8	$	(141.8	)	$	(1.6	)	$	423.4



	As of December 31, 2017
(In millions)	Acquisition Cost		Accumulated Amortization			Currency Translation		Net
Customer relationships	$	257.3	$	(61.5	)	$	0.1	$	195.9
Patents, technology and other	158.2		(54.4		)	—		103.8
Indefinite-lived trade names	100.3		—			—		100.3
Total	$	515.8	$	(115.9	)	$	0.1	$	400.0

Schedule of Finite-Lived Intangible Assets, Future Amortization Expense

We expect finite-lived intangibles amortization expense for the next five years as follows:



	2019	2020	2021	2022	2023
Expected amortization expense	$26.2	$25.6	$25.3	$23.3	$20.8

Financing Arrangements (Tables)

12 Months Ended

Dec. 31, 2018

Debt Disclosure [Abstract]

Schedule of Long-term Debt Instruments

Total debt consisted of the following:



As of December 31, 2018 (In millions)	Principal Amount		Unamortized discount and debt issuance cost		Net debt		Weighted average interest rate
Senior secured revolving credit facility due 2022	$	120.1	$	—	$	120.1	3.35	%
Senior secured term loan due 2026	631.0		11.2		619.8		3.80	%
5.25% senior notes due 2023	600.0		5.0		595.0		5.25	%
Other debt ⁽¹⁾	20.7		—		20.7
Total debt	$	1,371.8	$	16.2	$	1,355.6
Less short-term and current portion of long-term debt	19.4		—		19.4
Total long-term debt, net of current portion	$	1,352.4	$	16.2	$	1,336.2



As of December 31, 2017 (In millions)	Principal Amount		Unamortized discount and debt issuance cost		Net debt		Weighted average interest rate
Senior secured revolving credit facility due 2022	$	56.5	$	—	$	56.5	2.77	%
Senior secured term loan due 2026	637.5		8.5		629.0		3.27	%
5.25% senior notes due 2023	600.0		6.0		594.0		5.25	%
Other debt⁽¹⁾	29.5		—		29.5
Total debt	$	1,323.5	$	14.5	$	1,309.0
Less short-term and current portion of long-term debt	32.6		—		32.6
Total long-term debt, net of current portion	$	1,290.9	$	14.5	$	1,276.4


(1)	Other debt includes capital lease obligations of $3.4 million and $17.8 million as of December 31, 2018 and 2017, respectively.

Schedule of Maturities of Long-term Debt

Aggregate maturities of the principal amount of debt for the next five years and thereafter are as follows:



(In millions)
2019	$	19.4
2020	8.1
2021	7.6
2022	127.3
2023	607.0
Thereafter	602.4
Aggregate maturities	$	1,371.8

- Definition

Tabular disclosure of long-debt instruments or arrangements, including identification, terms, features, collateral requirements and other information necessary to a fair presentation. These are debt arrangements that originally required repayment more than twelve months after issuance or greater than the normal operating cycle of the entity, if longer.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 1A
-URI http://asc.fasb.org/extlink&oid=114775744&loc=d3e28541-108399

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 6
-URI http://asc.fasb.org/extlink&oid=109259400&loc=d3e21506-112644

Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08.(e),(f))
-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690

Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=114775744&loc=d3e28551-108399

Reference 6: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 7
-URI http://asc.fasb.org/extlink&oid=109259400&loc=d3e21521-112644

Reference 7: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=109259400&loc=d3e21538-112644

Reference 8: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 470
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=75038535&loc=d3e64711-112823

Reference 9: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 55
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=114775985&loc=d3e28878-108400

Reference 10: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=109259400&loc=d3e21475-112644

+ Details

Leasing Arrangements (Tables)

12 Months Ended

Dec. 31, 2018

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, 2018 are as follows:



(In millions)
2019	$	24.5
2020	20.4
2021	12.4
2022	8.5
2023	5.8
Thereafter	9.0
Total	$	80.6

Inventories (Tables)

12 Months Ended

Dec. 31, 2018

Inventory Disclosure [Abstract]

Components Of Inventories

Components of Inventories, net are as follows:



(In millions)	December 31, 2018		December 31, 2017
Finished products	$	204.3	$	203.3
Work in process	6.9		5.1
Raw materials and supplies	133.5		119.4
Inventories, net	$	344.7	$	327.8

Property, Net (Tables)

12 Months Ended

Dec. 31, 2018

Property, Plant and Equipment [Abstract]

Components Of Property, Net

Components of Property, net are as follows:



(In millions)	December 31, 2018			December 31, 2017
Land and land improvements⁽¹⁾	$	48.8		$	40.7
Buildings ⁽²⁾	316.5			303.5
Machinery and equipment	1,082.2			1,038.0
Property, gross	1,447.5			1,382.2
Less accumulated depreciation and amortization	(952.1		)	(920.6		)
Property, net	$	495.4		$	461.6


(1)	Land and land improvements include properties under capital leases of $0.1 million and $1.7 million as of December 31, 2018 and 2017, respectively.


(2)	Buildings include properties under capital leases of $3.6 million and $16.5 million as of December 31, 2018 and 2017, respectively.

Other Balance Sheet Liabilities (Tables)

12 Months Ended

Dec. 31, 2018

Other Liabilities Disclosure [Abstract]

Components Of Other Liabilities

Other liabilities at December 31, 2018 and 2017 consist of the following:



	Accrued expenses and other current liabilities				Other non-current liabilities
	December 31,				December 31,
(In millions)	2018		2017		2018		2017
Employment costs	$	75.7	$	87.5	$	18.9	$	20.1
Environmental liabilities	9.9		8.4		104.2		108.7
Accrued taxes	16.0		13.8		—		—
Pension and other post-employment benefits	4.9		5.4		—		—
Accrued interest	10.8		10.1		—		—
Dividends payable	15.6		14.2		—		—
Unrecognized tax benefits	1.7		3.3		16.1		18.1
Other	4.6		6.4		26.1		9.4
Total	$	139.2	$	149.1	$	165.3	$	156.3

Employee Benefit Plans (Tables)

12 Months Ended

Dec. 31, 2018

Defined Benefit Plan [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.



	Pension Benefits						Health Care Benefits
(In millions)	2018			2017			2018			2017
Change in benefit obligation:
Projected benefit obligation — beginning of year	$	507.7		$	503.0		$	8.8		$	10.8
Service cost	0.6			0.6			—			—
Interest cost	17.6			19.3			0.3			0.4
Actuarial (gain) loss	(23.9		)	21.3			(0.6		)	(1.7		)
Benefits paid	(37.7		)	(38.8		)	(0.8		)	(0.9		)
Other	(1.6		)	2.3			(0.3		)	0.2
Projected benefit obligation — end of year	$	462.7		$	507.7		$	7.4		$	8.8
Projected salary increases	(1.6		)	(2.0		)	—			—
Accumulated benefit obligation	$	461.1		$	505.7		$	7.4		$	8.8
Change in plan assets:
Plan assets — beginning of year	$	484.7		$	474.3		$	—		$	—
Actual (loss) return on plan assets	(16.4		)	44.0			—			—
Company contributions	4.5			4.6			0.8			0.9
Benefits paid	(37.7		)	(38.8		)	(0.8		)	(0.9		)
Other	(0.7		)	0.6			—			—
Plan assets — end of year	$	434.4		$	484.7		$	—		$	—
Unfunded status at end of year	$	(28.3	)	$	(23.0	)	$	(7.4	)	$	(8.8	)

Amounts Included In Consolidated Balance Sheets

Amounts included in the accompanying Consolidated Balance Sheets as of December 31 are as follows:



	Pension Benefits				Health Care Benefits
(In millions)	2018		2017		2018		2017
Non-current assets	$	23.5	$	35.9	$	—	$	—
Accrued expenses and other liabilities	$	4.1	$	4.4	$	0.8	$	1.0
Other non-current liabilities	$	47.7	$	54.5	$	6.6	$	7.8

Schedule Of Projected And Accumulated Benefit Obligations In Excess Of Plan Assets

As of December 31, 2018 and 2017, 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)	2018		2017		2018		2017
Projected benefit obligation	$	56.4	$	63.9	$	7.4	$	8.8
Accumulated benefit obligation	$	54.8	$	61.9	$	7.4	$	8.8
Fair value of plan assets	$	4.6	$	5.1	$	—	$	—

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
	2018		2017		2016		2018		2017		2016
Discount rate*	3.62	%	3.97	%	4.10	%	3.60	%	4.04	%	4.12	%
Expected long-term return on plan assets*	5.09	%	6.08	%	6.87	%	—	%	—	%	—	%
Assumed health care cost trend rates at December 31:
Health care cost trend rate assumed for next year	N/A		N/A		N/A		6.29	%	6.52	%	6.69	%
Rate to which the cost trend rate is assumed to decline (the ultimate trend rate)	N/A		N/A		N/A		4.50	%	4.50	%	4.50	%
Year that the rate reaches the ultimate trend rate	N/A		N/A		N/A		2027		2027		2027


*	The mark-to-market component of net periodic costs is determined based on discount rates as of year-end and actual asset returns during the year.

Weighted-average assumptions used to determine benefit obligations at December 31:



	Pension Benefits				Health Care Benefits
	2018		2017		2018		2017
Discount rate	4.11	%	3.62	%	3.98	%	3.60	%
Assumed health care cost trend rates at December 31:
Health care cost trend rate assumed for next year	N/A		N/A		6.09	%	6.29	%
Rate to which the cost trend rate is assumed to decline (the ultimate trend rate)	N/A		N/A		4.50	%	4.50	%
Year that the rate reaches the ultimate trend rate	N/A		N/A		2027		2027

Components Of Net Period Benefit Cost

The following table summarizes the components of net periodic benefit cost or gain that was recognized during each of the years in the three-year period ended December 31, 2018.



	Pension Benefits									Health Care Benefits
(In millions)	2018			2017			2016			2018			2017			2016
Components of net periodic benefit costs (gains):
Service cost	$	0.6		$	0.6		$	1.0		$	—		$	—		$	—
Interest cost	17.6			19.3			20.7			0.3			0.4			0.5
Expected return on plan assets	(23.8		)	(27.7		)	(31.4		)	—			—			—
Mark-to-market actuarial net losses (gains)	16.2			5.0			(7.8		)	(0.6		)	(1.7		)	(0.6		)
Other	(0.1		)	—			—			—			—			—
Net periodic cost (benefit)	$	10.5		$	(2.8	)	$	(17.5	)	$	(0.3	)	$	(1.3	)	$	(0.1	)

Fair Values Of Pension Plan Assets

The fair values of pension plan assets at December 31, 2018 and 2017, by asset category, are as follows:



	Fair Value of Plan Assets at December 31, 2018
(In millions)	Quoted Prices in Active Markets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)		Total Investments (at Fair Value)
Asset category
Cash	$	3.7	$	—	$	—	$	3.7
Other	—		—		4.6		4.6
Total	$	3.7	$	—	$	4.6	8.3

Investments measured at NAV:
Common collective funds:
United States equity							14.9
International equity							14.9
Global equity							8.5
Fixed income							387.8
Total common collective funds							426.1

Total investments at fair value							$	434.4



	Fair Value of Plan Assets at December 31, 2017
(In millions)	Quoted Prices in Active Markets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)		Total Investments (at Fair Value)
Asset category
Cash	$	4.3	$	—	$	—	$	4.3
Other	—		—		5.1		5.1
Total	$	4.3	$	—	$	5.1	9.4

Investments measured at NAV:
Common collective funds:
United States equity							19.2
International equity							19.4
Global equity							9.6
Fixed income							427.1
Total common collective funds							$	475.3

Total investments at fair value							$	484.7

Estimated Future Benefit Payments

The estimated future benefit payments for our pension and health care plans are as follows:



(In millions)	Pension Benefits		Health Care Benefits
2019	$	38.3	$	0.9
2020	37.7		0.8
2021	38.2		0.8
2022	36.2		0.7
2023	35.9		0.7
2024 through 2028	162.4		2.5

Schedule Of Contributions To The Retirement Savings Plan

Following are our contributions to the RSP:



(In millions)	2018		2017		2016
Retirement savings match	$	10.1	$	9.1	$	8.2
Retirement benefit contribution	—		1.6		4.0
Total contributions	$	10.1	$	10.7	$	12.2

Commitments And Contingencies (Tables)

12 Months Ended

Dec. 31, 2018

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)	2018			2017			2016
Balance at beginning of the year	$	117.1		$	117.3		$	119.9
Environmental expenses	23.2			14.8			8.3
Net cash payments	(26.0		)	(15.2		)	(11.0		)
Currency translation and other	(0.2		)	0.2			0.1
Balance at end of year	$	114.1		$	117.1		$	117.3

Income Taxes (Tables)

12 Months Ended

Dec. 31, 2018

Income Tax Disclosure [Abstract]

Schedule Of Income (Loss) Before Income Taxes

Income from continuing operations, before income taxes consists of the following:



(In millions)	2018		2017		2016
Domestic	$	86.3	$	105.6	$	129.1
Foreign	110.9		106.7		97.5
Income from continuing operations, before income taxes	$	197.2	$	212.3	$	226.6

Summary Of Income Tax (Expense) Benefit

A summary of income tax expense from continuing operations is as follows:



(In millions)	2018			2017			2016
Current income tax expense (benefit):
Domestic - GILTI and U.S. tax reform transition tax	$	3.7		$	24.0		$	—
Domestic - other	10.2			(11.2		)	27.8
Foreign	27.3			27.3			22.5
Total current income tax expense	$	41.2		$	40.1		$	50.3
Deferred income tax (benefit) expense:
Domestic - U.S. tax reform, tax effect on net deferred tax liabilities	$	(6.8	)	$	(20.1	)	$	—
Domestic - other	22.1			27.4			6.0
Foreign	(20.1		)	(8.7		)	4.1
Total deferred income tax (benefit) expense	$	(4.8	)	$	(1.4	)	$	10.1
Total income tax expense	$	36.4		$	38.7		$	60.4

Difference Between Effective Income Tax Rate And U.S. Statutory Rate



	2018		2017		2016
Federal statutory income tax rate	21.0	%	35.0	%	35.0	%

Foreign tax rate differential:
Asia	0.2		(1.2	)	(1.2	)
Europe	(6.0	)	(8.6	)	(2.7	)
Canada and Mexico	—		(1.3	)	(1.7	)
Total foreign tax rate differential:	(5.8	)	(11.1	)	(5.6	)

State and local tax, net	2.8		1.4		2.1
Tax on GILTI	1.5		—		—
Repatriation on certain foreign earnings from prior and current periods	5.7		0.4		—
Tax benefits on certain foreign investments	—		(6.8	)	(1.9	)
Domestic production activities deduction	(0.7	)	(1.9	)	(1.5	)
Amended prior period tax returns and corresponding favorable audit adjustments	—		(3.6	)	(1.3	)
Net impact of uncertain tax positions	(0.4	)	2.2		(1.1	)
Changes in valuation allowances	(1.8	)	0.7		0.4
U.S. tax reform, transition tax	0.8		11.3		—
U.S. tax reform, tax effect on net deferred tax liabilities	(3.5	)	(9.5	)	—
Other	(1.1	)	0.1		0.6
Effective income tax rate	18.5	%	18.2	%	26.7	%

Components Of Deferred Tax Liabilities And Assets

Components of our deferred tax assets (liabilities) as of December 31, 2018 and 2017 were as follows:



(In millions)	2018			2017
Deferred tax assets:
Pension and other post-retirement benefits	$	8.2		$	7.3
Employment costs	20.1			22.0
Environmental reserves	29.0			29.4
Net operating loss carryforwards	48.8			42.3
Other, net	39.8			20.0
Gross deferred tax assets	$	145.9		$	121.0
Valuation allowances	(15.2		)	(21.4		)
Total deferred tax assets, net of valuation allowances	$	130.7		$	99.6

Deferred tax liabilities:
Property, plant and equipment	$	(33.9	)	$	(20.7	)
Goodwill and intangibles	(101.5		)	(98.7		)
Other, net	(14.4		)	(1.0		)
Total deferred tax liabilities	$	(149.8	)	$	(120.4	)

Net deferred tax (liabilities) assets	$	(19.1	)	$	(20.8	)

Consolidated Balance Sheets:
Non-current deferred income tax assets	$	50.2		$	19.5
Non-current deferred income tax liabilities	$	(69.3	)	$	(40.3	)

Changes In Unrecognized Tax Benefits

The Company records provisions for uncertain tax positions in accordance with ASC Topic 740, Income Taxes. A reconciliation of unrecognized tax benefits is as follows:



	Unrecognized Tax Benefits
(In millions)	2018			2017			2016
Balance as of January 1,	$	18.6		$	7.9		$	11.3
Increases as a result of positions taken during current year	1.3			9.2			0.3
Increases as a result of positions taken for prior years	1.1			1.8			1.2
Balance related to acquired businesses	—			—			—
Reductions for tax positions of prior years	(2.8		)	(0.3		)	—
Decreases as a result of lapse of statute of limitations	(0.2		)	(0.2		)	(4.2		)
Decreases relating to settlements with taxing authorities	(1.4		)	—			(0.3		)
Other, net	0.1			0.2			(0.4		)
Balance as of December 31,	$	16.7		$	18.6		$	7.9

Share-Based Compensation (Tables)

12 Months Ended

Dec. 31, 2018

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 (Loss). A summary of compensation expense by type of award follows:



(In millions)	2018		2017		2016
Stock appreciation rights	$	4.4	$	4.2	$	3.3
Performance shares	0.6		0.6		—
Restricted stock units	5.9		5.3		4.4
Total share-based compensation	$	10.9	$	10.1	$	7.7

Summary Of Assumptions Related To Grants

The following is a summary of the weighted average assumptions related to the grants issued during 2018, 2017 and 2016:



	2018	2017	2016
Expected volatility	41.0%	41.0%	41.0%
Expected dividends	1.67%	1.58%	1.92%
Expected term (in years)	6.5	6.5	6.7
Risk-free rate	3.06%	2.72%	1.90%
Value of SARs granted	$14.82	$12.01	$8.29

Summary Of Stock Appreciation Rights

A summary of SAR activity for 2018 is presented below:



Stock Appreciation Rights (In millions, except per share data)	Shares		Weighted-Average Exercise Price Per Share		Weighted-Average Remaining Contractual Term	Aggregate Intrinsic Value
Outstanding as of January 1, 2018	1.8		$	28.62	6.85	$	27.0
Granted	0.3		41.89
Exercised	(0.3	)	21.83
Forfeited or expired	—		37.31
Outstanding as of December 31, 2018	1.8		$	32.14	6.77	$	4.0
Vested and exercisable as of December 31, 2018	1.0		$	28.83	5.67	$	3.5

Segment Information (Tables)

12 Months Ended

Dec. 31, 2018

Segment Reporting [Abstract]

Schedule of Segment Reporting Information, by Segment

Financial information by reportable segment is as follows:



Year Ended December 31, 2018 (In millions)	Sales to External Customers		Intersegment Sales			Total Sales			Operating Income			Depreciation and Amortization		Capital Expenditures		Total Assets
Color, Additives and Inks	$	1,040.6	$	5.9		$	1,046.5		$	158.5		$	44.3	$	22.9	$	1,235.1
Specialty Engineered Materials	593.6		52.2			645.8			72.3			23.2		25.2		596.2
Performance Products and Solutions	652.4		83.4			735.8			73.6			15.9		19.5		275.4
Distribution	1,246.8		18.6			1,265.4			71.5			0.7		0.1		249.0
Corporate and eliminations	—		(160.1		)	(160.1		)	(102.2		)	4.4		8.3		367.6
Total	$	3,533.4	$	—		$	3,533.4		$	273.7		$	88.5	$	76.0	$	2,723.3



Year Ended December 31, 2017 (In millions)	Sales to External Customers		Intersegment Sales			Total Sales			Operating Income			Depreciation and Amortization		Capital Expenditures		Total Assets
Color, Additives and Inks	$	877.7	$	15.5		$	893.2		$	138.6		$	41.2	$	21.2	$	1,146.8
Specialty Engineered Materials	574.8		49.5			624.3			75.5			21.1		23.4		545.1
Performance Products and Solutions	639.6		81.0			720.6			77.1			15.5		17.2		275.8
Distribution	1,137.8		16.8			1,154.6			72.6			0.8		0.5		250.9
Corporate and eliminations	—		(162.8		)	(162.8		)	(91.0		)	4.2		9.3		486.7
Total	$	3,229.9	$	—		$	3,229.9		$	272.8		$	82.8	$	71.6	$	2,705.3



Year Ended December 31, 2016 (In millions)	Sales to External Customers		Intersegment Sales			Total Sales			Operating Income			Depreciation and Amortization		Capital Expenditures		Total Assets
Color, Additives and Inks	$	778.9	$	18.8		$	797.7		$	127.5		$	40.2	$	20.6	$	923.8
Specialty Engineered Materials	516.4		49.4			565.8			81.1			18.3		19.4		542.8
Performance Products and Solutions	589.2		79.3			668.5			74.4			15.0		12.4		241.8
Distribution	1,054.1		16.9			1,071.0			68.2			0.7		0.2		207.0
Corporate and eliminations	—		(164.4		)	(164.4		)	(83.5		)	4.0		13.0		386.5
Assets Held for Sale	—		—			—			—			25.8		18.6		433.9
Total	$	2,938.6	$	—		$	2,938.6		$	267.7		$	104.0	$	84.2	$	2,735.8

Schedule Of Revenue And Long-Lived Assets



(In millions)	2018		2017		2016
Sales:
United States	$	2,030.4	$	1,910.8	$	1,767.8
Europe	549.9		455.7		415.2
Canada	255.0		251.1		237.7
Asia	346.4		313.4		266.9
Mexico	331.7		279.8		233.7
South America	20.0		19.1		17.3
Total Sales	$	3,533.4	$	3,229.9	$	2,938.6

Long lived assets:
United States	$	290.0	$	279.7	$	268.3
Europe	116.4		97.0		86.6
Canada	10.7		8.2		7.2
Asia	58.9		56.2		44.6
Mexico	17.7		18.5		18.5
South America	1.7		2.0		1.1
Total Long lived assets	$	495.4	$	461.6	$	426.3

Derivatives and Hedging (Tables)

12 Months Ended

Dec. 31, 2018

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Schedule of Derivative Instruments in Statement of Financial Position, Fair Value

The fair value of derivative financial instruments recognized in the Condensed Consolidated Balance Sheets is as follows:



(In millions)	Balance Sheet Location	December 31, 2018		December 31, 2017
Assets
Cross Currency Swaps (Net Investment Hedge)	Other non-current assets	$	2.6	$	—
Liabilities
Interest Rate Swap (Fair Value Hedge)	Other non-current liabilities	$	1.7	$	—

Selected Quarterly Financial Data (Unaudited) (Tables)

12 Months Ended

Dec. 31, 2018

Selected Quarterly Financial Information [Abstract]

Schedule Of Quarterly Financial Data



	2018 Quarters								2017 Quarters
(In millions, except per share data)	Fourth ⁽²⁾		Third ⁽³⁾		Second ⁽⁴⁾		First ⁽⁵⁾		Fourth⁽⁶⁾		Third ⁽⁷⁾		Second ⁽⁸⁾		First ⁽⁹⁾
Sales	$	834.0	$	883.0	$	914.8	$	901.6	$	800.6	$	818.5	$	814.1	$	796.7
Gross Margin	165.0		184.9		196.5		198.5		169.3		179.5		187.9		182.2
Operating income	47.0		70.5		77.4		78.8		47.1		65.7		78.0		82.0
Net income from continuing operations	11.4		50.2		51.5		47.7		35.5		40.2		49.6		48.3
Net income from continuing operations attributable to PolyOne shareholders	$	11.6	$	50.2	$	51.6	$	47.7	$	35.4	$	40.2	$	49.6	$	48.3

Net income from continuing operations per common share attributable to PolyOne common shareholders: ⁽¹⁾
Basic earnings per share	$	0.15	$	0.63	$	0.65	$	0.59	$	0.44	$	0.50	$	0.61	$	0.58
Diluted earnings per share	$	0.15	$	0.62	$	0.64	$	0.59	$	0.43	$	0.49	$	0.60	$	0.58


(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 2018 are: 1) mark-to-market pension and other post-retirement charge of $15.6 million, 2) environmental remediation costs of $3.9 million and 3) acquisition related costs and adjustments of $2.0 million.


(3)	Included for the third quarter 2018 are: 1) environmental remediation costs of $7.5 million and 2) a gain related to the reimbursement of previously incurred environmental costs of $1.5 million.


(4)	Included for the second quarter 2018 are: 1) environmental remediation costs of $8.7 million, 2) acquisition related costs and adjustments of $1.9 million and 3) a gain related to the reimbursement of previously incurred environmental costs of $1.6 million.


(5)	Included for the first quarter 2018 are: 1) environmental remediation costs of $3.1 million and 2) acquisition related costs and adjustments of $1.9 million.


(6)	Included for the fourth quarter 2017 are: 1) tax adjustments primarily associated with the Tax Cuts and Jobs Act of $10.7 million and 2) a mark-to-market pension and other post-retirement charge of $3.3 million.


(7)	Included for the third quarter 2017 are: 1) acquisition related costs and adjustments of $2.6 million, 2) environmental remediation costs of $4.9 million and 3) a gain related to the reimbursement of previously incurred environmental costs of $2.5 million.


(8)	Included for the second quarter 2017 are: 1) environmental remediation costs of $5.0 million and 2) a gain related to the reimbursement of previously incurred environmental costs of $3.8 million.


(9)	Included for the first quarter 2017 are environmental remediation costs of $2.2 million.

Description of Business and Summary of Significant Accounting Policies - Narrative (Details) polymer_solution in Thousands, customer in Thousands	7 Months Ended	12 Months Ended
	Jul. 19, 2017 segment	Dec. 31, 2018 USD ($) polymer_solution customer segment	Dec. 31, 2017 USD ($)	Dec. 31, 2016 USD ($)
Accounting Policies [Line Items]
Number of reportable segments \| segment	5	4
Contract life		12 months
Number of polymer solutions offered \| polymer_solution		35
Number of customers \| customer		10
Allowance for doubtful accounts		$ 2,400,000	$ 2,800,000
Impairment of long-lived assets		0	0	$ 0
Research and development costs		$ 56,300,000	52,100,000	50,400,000
Minimum \| Machinery and equipment
Accounting Policies [Line Items]
Property and equipment useful lives		3 years
Maximum
Accounting Policies [Line Items]
Finite-lived intangible asset useful life		20 years
Maximum \| Machinery and equipment
Accounting Policies [Line Items]
Property and equipment useful lives		15 years
Maximum \| Building
Accounting Policies [Line Items]
Property and equipment useful lives		40 years
Maximum \| Software
Accounting Policies [Line Items]
Property and equipment useful lives		10 years
Accounting Standards Update 2016-16
Accounting Policies [Line Items]
Cumulative effect of adoption			17,000,000
Other Income \| Accounting Standards Update 2017-07
Accounting Policies [Line Items]
Non-service components of net periodic benefit costs (gains)		$ 9,600,000	$ (4,700,000)	$ (18,600,000)

Description of Business and Summary of Significant Accounting Policies - Accumulated Other Comprehensive Loss (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Changes in Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning Balance	$ 599.4	$ 725.5	$ 705.2
Translation adjustments	(25.6)	41.2	(23.0)
Unrealized gains (losses), other	(0.4)		0.1
Unrealized gains (losses), cash flow hedge	(1.3)	0.0	0.0
Ending Balance	540.6	599.4	725.5
Cumulative Translation Adjustment and Related Hedging Instruments
Changes in Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning Balance	(58.6)	(99.8)	(76.8)
Translation adjustments	(25.6)	41.2	(23.0)
Unrealized gains (losses), net investment hedging	(2.0)
Ending Balance	(86.2)	(58.6)	(99.8)
Pension and other post-retirement benefits
Changes in Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning Balance	5.2	5.2	5.2
Ending Balance	5.2	5.2	5.2
Cash Flow Hedges
Changes in Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning Balance	0.0	0.0	0.0
Unrealized gains (losses), cash flow hedge	(1.3)
Ending Balance	(1.3)	0.0	0.0
Other
Changes in Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning Balance	0.4	0.4	0.3
Unrealized gains (losses), other	(0.4)		0.1
Ending Balance	0.0	0.4	0.4
Total
Changes in Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning Balance	(53.0)	(94.2)	(71.3)
Unrealized gains (losses), net investment and cash flow hedge	(3.3)
Ending Balance	$ (82.3)	$ (53.0)	$ (94.2)

Business Combinations (Details) - USD ($) $ in Millions	5 Months Ended	12 Months Ended
Business Combinations (Details) - USD ($) $ in Millions	May 31, 2018	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Business Acquisition [Line Items]
Business acquisitions, net of cash acquired	$ 118.5	$ 98.6	$ 163.8	$ 164.2
Contingent consideration, earn-out period	2 years
Intangible assets, other than goodwill	$ 51.0	51.0
Goodwill	41.5	650.3	$ 610.5	$ 532.7
Property, plant and equipment	30.8
Net working capital	19.4
Deferred tax liabilities	13.1
Other liabilities	$ 11.1
Revenues		71.0
Customer relationships
Business Acquisition [Line Items]
Intangible assets, other than goodwill		$ 21.1
Finite-lived intangible asset useful life		18 years
Patents, technology and other
Business Acquisition [Line Items]
Intangible assets, other than goodwill		$ 29.9
Patents, technology and other \| Minimum
Business Acquisition [Line Items]
Finite-lived intangible asset useful life		13 years
Patents, technology and other \| Maximum
Business Acquisition [Line Items]
Finite-lived intangible asset useful life		24 years

Discontinued Operations - Narrative (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Jul. 19, 2017
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Loss on sale of business, net of tax	$ 0.0	$ (227.7)	$ 0.0
Designed Structures and Solutions \| Discontinued Operations, Disposed of by Sale
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Sales price of business				$ 115.0
Loss on sale of business, net of tax		$ (229.0)

Discontinued Operations - Schedule of Discontinued Operations (Details) - Designed Structures and Solutions - Discontinued Operations, Disposed of by Sale - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Disposal Group, Including Discontinued Operation, Income Statement Disclosures [Abstract]
Sales	$ 0.0	$ 222.1	$ 401.2
Loss on sale	(1.8)	(295.6)	0.0
Loss from operations	0.0	(8.6)	(4.3)
Loss before taxes	(1.8)	(304.2)	(4.3)
Income tax benefit	0.5	73.0	3.1
Loss from discontinued operations, net of taxes	$ (1.3)	$ (231.2)	$ (1.2)

- Definition

Amount before tax of income (loss) from a discontinued operation. Includes, but is not limited to, the income (loss) from operations during the phase-out period, gain (loss) on disposal, gain (loss) for reversal of write-down (write-down) to fair value, less cost to sell, and adjustments to a prior period gain (loss) on disposal.

+ References + Details

- Definition

Amount of tax expense (benefit) related to a discontinued operation. Includes, but is not limited to, tax expense (benefit) related to income (loss) from operations during the phase-out period, tax expense (benefit) related to gain (loss) on disposal, tax expense (benefit) related to gain (loss) for reversal of write-down (write-down) to fair value, less cost to sell, and tax expense (benefit) related to adjustments of a prior period gain (loss) on disposal.

+ References + Details

- Definition

Amount after tax of income (loss) from a discontinued operation including the portion attributable to the noncontrolling interest. Includes, but is not limited to, the income (loss) from operations during the phase-out period, gain (loss) on disposal, gain (loss) for reversal of write-down (write-down) to fair value, less cost to sell, and adjustments to a prior period gain (loss) on disposal.

+ References + Details

Goodwill And Intangible Assets - Goodwill By Operating Segment (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Goodwill [Roll Forward]
Balance, beginning of period	$ 610.5	$ 532.7
Acquisition of businesses	42.1	77.0
Currency translation	(2.3)	0.8
Balance, end of period	650.3	610.5
Specialty Engineered Materials
Goodwill [Roll Forward]
Balance, beginning of period	173.2	173.5
Acquisition of businesses	16.3	0.0
Currency translation	(0.6)	(0.3)
Balance, end of period	188.9	173.2
Color, Additives and Inks
Goodwill [Roll Forward]
Balance, beginning of period	424.5	346.4
Acquisition of businesses	25.8	77.0
Currency translation	(1.7)	1.1
Balance, end of period	448.6	424.5
Performance Products and Solutions
Goodwill [Roll Forward]
Balance, beginning of period	11.2	11.2
Acquisition of businesses	0.0	0.0
Currency translation	0.0	0.0
Balance, end of period	11.2	11.2
PolyOne Distribution
Goodwill [Roll Forward]
Balance, beginning of period	1.6	1.6
Acquisition of businesses	0.0	0.0
Currency translation	0.0	0.0
Balance, end of period	$ 1.6	$ 1.6

Goodwill And Intangible Assets - Narrative (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Goodwill and Intangible Assets Disclosure [Abstract]
Amortization of other finite-lived intangible assets	$ 25.9	$ 21.6	$ 17.9

Goodwill And Intangible Assets - Carrying Value And Accumulated Amortization Of Intangible Assets (Details) - USD ($) $ in Millions	Dec. 31, 2018	Dec. 31, 2017
Finite-Lived Intangible Assets [Line Items]
Accumulated Amortization	$ (141.8)	$ (115.9)
Currency Translation	(1.6)	0.1
Acquisition Cost	566.8	515.8
Net	423.4	400.0
Indefinite-lived trade names
Indefinite-lived Intangible Assets [Line Items]
Indefinite-lived other intangible assets	100.3	100.3
Customer relationships
Finite-Lived Intangible Assets [Line Items]
Acquisition Cost	278.4	257.3
Accumulated Amortization	(75.0)	(61.5)
Currency Translation	(0.7)	0.1
Net	202.7	195.9
Patents, technology and other
Finite-Lived Intangible Assets [Line Items]
Acquisition Cost	188.1	158.2
Accumulated Amortization	(66.8)	(54.4)
Currency Translation	(0.9)	0.0
Net	$ 120.4	$ 103.8

Goodwill And Intangible Assets - Schedule of Future Amortization (Details) $ in Millions	Dec. 31, 2018 USD ($)
Goodwill and Intangible Assets Disclosure [Abstract]
2019	$ 26.2
2020	25.6
2021	25.3
2022	23.3
2023	$ 20.8

Financing Arrangements - Components Of Long-Term Debt (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Apr. 11, 2018
Debt Instrument [Line Items]
Aggregate maturities	$ 1,371.8	$ 1,323.5
Debt, current portion	19.4	32.6
Total long-term debt, net of current portion, Principal Amount	1,352.4	1,290.9
Unamortized discount and debt issuance cost	16.2	14.5
Debt, excluding current, Unamortized discount and debt issuance cost	0.0	0.0
Total long-term debt, net of current portion, Unamortized Discount And Debt Issuance Cost	16.2	14.5
Total debt	1,355.6	1,309.0
Total long-term debt, current portion	19.4	32.6
Total long-term debt, net of current portion	1,336.2	1,276.4
Capital lease obligations, included in other debt	3.4	17.8
Senior secured term loan due 2026 \| Secured Debt
Debt Instrument [Line Items]
Stated interest rate			1.75%
Aggregate maturities	631.0	637.5
Unamortized discount and debt issuance cost	11.2	8.5
Total debt	$ 619.8	$ 629.0
Weighted average interest rate	3.80%	3.27%
5.25% senior notes due 2023 \| Senior Notes
Debt Instrument [Line Items]
Stated interest rate	5.25%
Aggregate maturities	$ 600.0	$ 600.0
Unamortized discount and debt issuance cost	5.0	6.0
Total debt	$ 595.0	$ 594.0
Weighted average interest rate	5.25%	5.25%
Other Debt
Debt Instrument [Line Items]
Aggregate maturities	$ 20.7	$ 29.5
Unamortized discount and debt issuance cost	0.0	0.0
Total debt	20.7	29.5
Revolving Credit Facility \| Senior secured revolving credit facility due 2022
Debt Instrument [Line Items]
Aggregate maturities	120.1	56.5
Unamortized discount and debt issuance cost	0.0	0.0
Total debt	$ 120.1	$ 56.5
Weighted average interest rate	3.35%	2.77%

Financing Arrangements - Narrative (Details) - USD ($)			12 Months Ended
Financing Arrangements - Narrative (Details) - USD ($)	Apr. 11, 2018	Jan. 24, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Feb. 24, 2017	Aug. 03, 2016
Debt Instrument [Line Items]
Repayment of long-term debt			$ 6,500,000	$ 6,500,000	$ 6,000,000
Borrowings			1,355,600,000	1,309,000,000
Fair value of debt instruments			1,316,800,000	1,343,300,000
Interest income			3,100,000	700,000	800,000
Total interest paid on long-term and short-term borrowings			61,000,000	59,400,000	$ 56,300,000
Saudi Hollandi Bank
Debt Instrument [Line Items]
Maximum borrowing capacity			$ 12,000,000.0	16,000,000.0
Fixed rate			0.85%
Letters of credit under the credit line				200,000
Amount outstanding			$ 10,700,000	$ 11,700,000
Interest rate at period end			3.35%	2.69%
Remaining availability on credit line			$ 1,300,000	$ 4,100,000
Senior secured term loan due 2026
Debt Instrument [Line Items]
Annual payment							1.00%
Repayment of long-term debt			6,500,000
Senior secured term loan due 2026 \| Secured Debt
Debt Instrument [Line Items]
Decrease in basis spread on variable rate		0.25%
Stated interest rate	1.75%
Borrowings			619,800,000	629,000,000
Senior secured revolving credit facility due 2022 \| Revolving Credit Facility
Debt Instrument [Line Items]
Maximum borrowing capacity						$ 450,000,000.0
Borrowings			120,100,000	56,500,000
Current borrowing capacity			279,400,000	$ 326,200,000
Senior secured revolving credit facility due 2022 \| Canadian Line Of Credit
Debt Instrument [Line Items]
Amount of borrowings on the US or Canadian portion of the facility			$ 0
London Interbank Offered Rate (LIBOR) \| Senior secured term loan due 2026 \| Secured Debt
Debt Instrument [Line Items]
Basis point spread	1.75%
Variable rate floor	0.75%
Prime Rate \| Senior secured term loan due 2026 \| Secured Debt
Debt Instrument [Line Items]
Basis point spread	0.75%
Variable rate floor	1.75%

Financing Arrangements - Long-Term Debt Maturity Schedule (Details) - USD ($) $ in Millions	Dec. 31, 2018	Dec. 31, 2017
Debt Disclosure [Abstract]
2019	$ 19.4
2020	8.1
2021	7.6
2022	127.3
2023	607.0
Thereafter	602.4
Aggregate maturities	$ 1,371.8	$ 1,323.5

Leasing Arrangements - Narrative (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Leases [Abstract]
Lease expense	$ 25.9	$ 25.2	$ 23.0

Leasing Arrangements - Schedule of Future Minimum Lease Payments, Operating Leases (Details) $ in Millions	Dec. 31, 2018 USD ($)
Leases [Abstract]
2019	$ 24.5
2020	20.4
2021	12.4
2022	8.5
2023	5.8
Thereafter	9.0
Total	$ 80.6

Inventories, Net - Components Of Inventories (Details) - USD ($) $ in Millions	Dec. 31, 2018	Dec. 31, 2017
Inventory Disclosure [Abstract]
Finished products	$ 204.3	$ 203.3
Work in process	6.9	5.1
Raw materials and supplies	133.5	119.4
Inventories, net	$ 344.7	$ 327.8

Property, Net - Components of Property, Net (Details) - USD ($) $ in Millions	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Property, Plant and Equipment [Line Items]
Property, gross	$ 1,447.5	$ 1,382.2
Less accumulated depreciation and amortization	(952.1)	(920.6)
Property, net	495.4	461.6	$ 426.3
Land and land improvements
Property, Plant and Equipment [Line Items]
Property, gross	48.8	40.7
Properties under capital leases	0.1	1.7
Building
Property, Plant and Equipment [Line Items]
Property, gross	316.5	303.5
Properties under capital leases	3.6	16.5
Machinery and equipment
Property, Plant and Equipment [Line Items]
Property, gross	$ 1,082.2	$ 1,038.0

Property, Net - Narrative (Details) - USD ($) $ in Millions	12 Months Ended
Property, Net - Narrative (Details) - USD ($) $ in Millions	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Property, Plant and Equipment [Abstract]
Depreciation expense	$ 62.6	$ 61.2	$ 57.8

Other Balance Sheet Liabilities - Components Of Other Liabilities (Details) - USD ($) $ in Millions	Dec. 31, 2018	Dec. 31, 2017
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Accrued expenses and other liabilities, Total	$ 139.2	$ 149.1
Pension and other post-employment benefits, Other non-current liabilities	54.3	62.3
Other non-current liabilities, Total	165.3	156.3
Accrued expenses and other current liabilities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Employment costs, Accrued expenses and other liabilities	75.7	87.5
Environmental liabilities, Accrued expenses and other liabilities	9.9	8.4
Accrued taxes, Accrued expenses and other liabilities	16.0	13.8
Pension and other post-employment benefits, Accrued expenses and other liabilities	4.9	5.4
Accrued interest, Accrued expenses and other liabilities	10.8	10.1
Dividends payable, Accrued expenses and other liabilities	15.6	14.2
Unrecognized tax benefits, Accrued expenses and other liabilities	1.7	3.3
Other, Accrued expenses and other liabilities	4.6	6.4
Accrued expenses and other liabilities, Total	139.2	149.1
Other non-current liabilities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Employment costs, Other non-current liabilities	18.9	20.1
Environmental liabilities, Other non-current liabilities	104.2	108.7
Accrued taxes, Other non-current liabilities	0.0	0.0
Pension and other post-employment benefits, Other non-current liabilities	0.0	0.0
Accrued interest, Other non-current liabilities	0.0	0.0
Dividends Payable, Noncurrent, Other non-current liabilities	0.0	0.0
Unrecognized tax benefits, Other non-current liabilities	16.1	18.1
Other, Other non-current liabilities	26.1	9.4
Other non-current liabilities, Total	$ 165.3	$ 156.3

Employee Benefit Plans - Narrative (Details) - USD ($) $ in Millions	3 Months Ended			12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Defined Benefit Plan Disclosure [Line Items]
Mark-to-market actuarial net (losses) gains	$ (15.6)	$ (3.3)	$ 8.4	$ (15.6)	$ 3.3	$ (8.4)
Discount rate	4.11%	3.62%	3.97%	4.11%	3.62%	3.97%	4.10%
Actual (loss) return on plan assets						$ 5.7
Fixed income securities
Defined Benefit Plan Disclosure [Line Items]
Percentage of equity securities	83.00%			83.00%
Equity Securities
Defined Benefit Plan Disclosure [Line Items]
Percentage of equity securities	17.00%			17.00%
Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Actual (loss) return on plan assets				$ (16.4)	$ 44.0
Employer contributions to defined benefit plans	$ 4.3			4.3
Health Care Benefits
Defined Benefit Plan Disclosure [Line Items]
Employer contributions to defined benefit plans	$ 0.9			$ 0.9

Employee Benefit Plans - Change In Benefit Obligation, Change In Plan Assets And Components Of Funded Status (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Change in plan assets:
Actual (loss) return on plan assets			$ 5.7
Pension Benefits
Change in benefit obligation:
Projected benefit obligation — beginning of year	$ 507.7	$ 503.0
Service cost	0.6	0.6	1.0
Interest cost	17.6	19.3	20.7
Actuarial (gain) loss	(23.9)	21.3
Benefits paid	(37.7)	(38.8)
Other	(1.6)	2.3
Projected benefit obligation — end of year	462.7	507.7	503.0
Projected salary increases	(1.6)	(2.0)
Accumulated benefit obligation	461.1	505.7
Change in plan assets:
Plan assets — beginning of year	484.7	474.3
Actual (loss) return on plan assets	(16.4)	44.0
Company contributions	4.5	4.6
Benefits paid	(37.7)	(38.8)
Other	(0.7)	0.6
Plan assets — end of year	434.4	484.7	474.3
Unfunded status at end of year	(28.3)	(23.0)
Health Care Benefits
Change in benefit obligation:
Projected benefit obligation — beginning of year	8.8	10.8
Service cost	0.0	0.0	0.0
Interest cost	0.3	0.4	0.5
Actuarial (gain) loss	(0.6)	(1.7)
Benefits paid	(0.8)	(0.9)
Other	(0.3)	0.2
Projected benefit obligation — end of year	7.4	8.8	10.8
Projected salary increases	0.0	0.0
Accumulated benefit obligation	7.4	8.8
Change in plan assets:
Plan assets — beginning of year	0.0	0.0
Actual (loss) return on plan assets	0.0	0.0
Company contributions	0.8	0.9
Benefits paid	(0.8)	(0.9)
Other	0.0	0.0
Plan assets — end of year	0.0	0.0	$ 0.0
Unfunded status at end of year	$ (7.4)	$ (8.8)

Employee Benefit Plans - Amounts Included In Consolidated Balance Sheets (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Non-current assets	$ 23.5	$ 35.9
Accrued expenses and other liabilities	4.1	4.4
Other non-current liabilities	47.7	54.5
Health Care Benefits
Defined Benefit Plan Disclosure [Line Items]
Non-current assets	0.0	0.0
Accrued expenses and other liabilities	0.8	1.0
Other non-current liabilities	$ 6.6	$ 7.8

Employee Benefit Plans - Schedule Of Projected And Accumulated Benefit Obligations In Excess Of Plan Assets (Details) - USD ($) $ in Millions	Dec. 31, 2018	Dec. 31, 2017
Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Projected benefit obligation	$ 56.4	$ 63.9
Accumulated benefit obligation	54.8	61.9
Fair value of plan assets	4.6	5.1
Health Care Benefits
Defined Benefit Plan Disclosure [Line Items]
Projected benefit obligation	7.4	8.8
Accumulated benefit obligation	7.4	8.8
Fair value of plan assets	$ 0.0	$ 0.0

Employee Benefit Plans - Weighted Average Assumptions Used To Determine Benefit Obligation (Details)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Weighted-average assumptions used to determine benefit obligations at December 31:
Discount rate	4.11%	3.62%	3.97%	4.10%
Health Care Benefits
Weighted-average assumptions used to determine benefit obligations at December 31:
Discount rate	3.98%	3.60%
Assumed health care cost trend rates at December 31:
Health care cost trend rate assumed for next year	6.09%	6.29%
Rate to which the cost trend rate is assumed to decline (the ultimate trend rate)	4.50%	4.50%
Year that the rate reaches the ultimate trend rate	2027	2027

Employee Benefit Plans - Components Of Net Period Benefit Cost (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Pension Benefits
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) [Abstract]
Service cost	$ 0.6	$ 0.6	$ 1.0
Interest cost	17.6	19.3	20.7
Expected return on plan assets	(23.8)	(27.7)	(31.4)
Mark-to-market actuarial net losses (gains)	16.2	5.0	(7.8)
Other	(0.1)	0.0	0.0
Net periodic cost (benefit)	10.5	(2.8)	(17.5)
Health Care Benefits
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) [Abstract]
Service cost	0.0	0.0	0.0
Interest cost	0.3	0.4	0.5
Expected return on plan assets	0.0	0.0	0.0
Mark-to-market actuarial net losses (gains)	(0.6)	(1.7)	(0.6)
Other	0.0	0.0	0.0
Net periodic cost (benefit)	$ (0.3)	$ (1.3)	$ (0.1)

Employee Benefit Plans - Weighted Average Assumptions Used To Determine Net Periodic Benefit Cost (Details)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Pension Benefits
Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Net Periodic Benefit Cost [Abstract]
Discount rate	3.62%	3.97%	4.10%
Expected long-term return on plan assets	5.09%	6.08%	6.87%
Health Care Benefits
Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Net Periodic Benefit Cost [Abstract]
Discount rate	3.60%	4.04%	4.12%
Expected long-term return on plan assets	0.00%	0.00%	0.00%
Assumed health care cost trend rates at December 31:
Health care cost trend rate assumed for next year	6.29%	6.52%	6.69%
Rate to which the cost trend rate is assumed to decline (the ultimate trend rate)	4.50%	4.50%	4.50%
Year that the rate reaches the ultimate trend rate	2027	2027	2027

Employee Benefit Plans - Fair Values Of Pension Plan Assets (Details) - Pension Benefits - USD ($) $ in Millions	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Defined Benefit Plan Disclosure [Line Items]
Plan assets	$ 434.4	$ 484.7	$ 474.3
Fair Value, Inputs, Level 1, 2 and 3
Defined Benefit Plan Disclosure [Line Items]
Plan assets	8.3	9.4
Fair Value, Inputs, Level 1, 2 and 3 \| Cash
Defined Benefit Plan Disclosure [Line Items]
Plan assets	3.7	4.3
Fair Value, Inputs, Level 1, 2 and 3 \| Other
Defined Benefit Plan Disclosure [Line Items]
Plan assets	4.6	5.1
Quoted Prices in Active Markets (Level 1)
Defined Benefit Plan Disclosure [Line Items]
Plan assets	3.7	4.3
Quoted Prices in Active Markets (Level 1) \| Cash
Defined Benefit Plan Disclosure [Line Items]
Plan assets	3.7	4.3
Quoted Prices in Active Markets (Level 1) \| Other
Defined Benefit Plan Disclosure [Line Items]
Plan assets	0.0	0.0
Significant Other Observable Inputs (Level 2)
Defined Benefit Plan Disclosure [Line Items]
Plan assets	0.0	0.0
Significant Other Observable Inputs (Level 2) \| Cash
Defined Benefit Plan Disclosure [Line Items]
Plan assets	0.0	0.0
Significant Other Observable Inputs (Level 2) \| Other
Defined Benefit Plan Disclosure [Line Items]
Plan assets	0.0	0.0
Significant Unobservable Inputs (Level 3)
Defined Benefit Plan Disclosure [Line Items]
Plan assets	4.6	5.1
Significant Unobservable Inputs (Level 3) \| Cash
Defined Benefit Plan Disclosure [Line Items]
Plan assets	0.0	0.0
Significant Unobservable Inputs (Level 3) \| Other
Defined Benefit Plan Disclosure [Line Items]
Plan assets	4.6	5.1
Fair Value Measured at Net Asset Value Per Share \| Total common collective funds
Defined Benefit Plan Disclosure [Line Items]
Plan assets	426.1	475.3
Fair Value Measured at Net Asset Value Per Share \| United States equity
Defined Benefit Plan Disclosure [Line Items]
Plan assets	14.9	19.2
Fair Value Measured at Net Asset Value Per Share \| International equity
Defined Benefit Plan Disclosure [Line Items]
Plan assets	14.9	19.4
Fair Value Measured at Net Asset Value Per Share \| Global equity
Defined Benefit Plan Disclosure [Line Items]
Plan assets	8.5	9.6
Fair Value Measured at Net Asset Value Per Share \| Fixed income
Defined Benefit Plan Disclosure [Line Items]
Plan assets	$ 387.8	$ 427.1

Employee Benefit Plans - Estimated Future Benefit Payments (Details) $ in Millions	Dec. 31, 2018 USD ($)
Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
2019	$ 38.3
2020	37.7
2021	38.2
2022	36.2
2023	35.9
2024 through 2028	162.4
Health Care Benefits
Defined Benefit Plan Disclosure [Line Items]
2019	0.9
2020	0.8
2021	0.8
2022	0.7
2023	0.7
2024 through 2028	$ 2.5

Employee Benefit Plans - Schedule Of Contributions To The Retirement Savings Plan (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Defined Benefit Plan [Abstract]
Retirement savings match	$ 10.1	$ 9.1	$ 8.2
Retirement benefit contribution	0.0	1.6	4.0
Total contributions	$ 10.1	$ 10.7	$ 12.2

Commitments And Contingencies - Narrative (Details) $ in Millions				1 Months Ended			3 Months Ended				12 Months Ended
	Jun. 30, 2018 entity mi	Mar. 31, 2016 company mi	Mar. 13, 2013 company mi	Sep. 30, 2017 company mi	Sep. 30, 2016 mi	Mar. 31, 2016 mi	Sep. 30, 2018 USD ($)	Jun. 30, 2018 USD ($) entity	Sep. 30, 2017 USD ($)	Jun. 30, 2017 USD ($)	Dec. 31, 2018 USD ($)	Dec. 31, 2017 USD ($)	Dec. 31, 2016 USD ($)	Mar. 31, 2017 USD ($)	Dec. 31, 2015 USD ($)
Loss Contingencies [Line Items]
Accrued probable future environmental expenditures											$ 114.1	$ 117.1	$ 117.3		$ 119.9
Insurance recoveries							$ 1.5	$ 1.6	$ 2.5	$ 3.8	4.3	$ 9.1	$ 6.1
Contamination of Passaic River Study Area
Loss Contingencies [Line Items]
Loss contingency, number of third-party companies assuming responsibility for development of RIFS \| company			70
Calvert City
Loss Contingencies [Line Items]
Accrued probable future environmental expenditures											$ 103.3
Lower Passaic River \| Contamination of Passaic River Study Area
Loss Contingencies [Line Items]
Site contingency, environmental remediation, total estimated cost of remedy														$ 1,400.0
Length of portion of river \| mi	8	8	17	8	8	8
Loss Contingency, Number Of Entities Named In Suit \| entity	100							100
Site contingency, number of companies receiving notice of potential liability (more than) \| company		100
Site contingency, number of companies receiving notice of process to allocate remedial costs \| company				80

Income Taxes - Schedule Of Income (Loss) Before Income Taxes (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Income Tax Disclosure [Abstract]
Domestic	$ 86.3	$ 105.6	$ 129.1
Foreign	110.9	106.7	97.5
Income from continuing operations, before income taxes	$ 197.2	$ 212.3	$ 226.6

Commitments And Contingencies - Schedule Of Changes In Environmental Accrued Liabilities (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Accrual for Environmental Loss Contingencies [Roll Forward]
Balance at beginning of the year	$ 117.1	$ 117.3	$ 119.9
Environmental expenses	23.2	14.8	8.3
Net cash payments	(26.0)	(15.2)	(11.0)
Currency translation and other	(0.2)	0.2	0.1
Balance at end of year	$ 114.1	$ 117.1	$ 117.3

Income Taxes - Summary Of Income Tax (Expense) Benefit (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Current income tax expense (benefit):
Domestic - GILTI and U.S. tax reform transition tax	$ 3.7	$ 24.0	$ 0.0
Domestic - other	10.2	(11.2)	27.8
Foreign	27.3	27.3	22.5
Total current income tax expense	41.2	40.1	50.3
Deferred income tax (benefit) expense:
Domestic - U.S. tax reform, tax effect on net deferred tax liabilities	(6.8)	(20.1)	0.0
Domestic - other	22.1	27.4	6.0
Foreign	(20.1)	(8.7)	4.1
Total deferred income tax (benefit) expense	(4.8)	(1.4)	10.1
Total income tax expense	$ 36.4	$ 38.7	$ 60.4

Income Taxes - Narrative (Details) - USD ($)	12 Months Ended
Income Taxes - Narrative (Details) - USD ($)	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Income Tax Contingency [Line Items]
Deferred income tax benefit, foreign, portion from legal entity realignment	$ (9,300,000)	$ (9,500,000)
Repatriation on certain foreign earnings from prior and current periods	5.70%	0.40%	0.00%
Tax benefits on certain foreign investments	0.00%	(6.80%)	(1.90%)
Effective tax rate, investments in foreign affiliates		$ 14,400,000
Gross state net operating loss carryforwards	$ 151,700,000
Foreign subsidiaries gross net operating loss carryforwards	152,300,000
Increase (decrease) in valuation allowance	(6,200,000)
Repatriation on certain foreign earnings from prior and current periods, amount	8,200,000
Provision for income taxes on undistributed earnings of non-United States subsidiaries	0
Undistributed earnings of non-United States subsidiaries	350,000,000
Income tax payments	46,500,000	56,500,000	$ 50,300,000
Income tax refunds	29,900,000	6,700,000	$ 2,400,000
Income tax penalties and interest accrued	2,500,000	$ 3,900,000
Reduction in unrecognized tax benefits on the outcome of tax examinations and the expiration of statutes of limitations	1,200,000
Income tax expense if unrecognized tax benefits were recognized	10,900,000
Domestic and Foreign Tax Authority
Income Tax Contingency [Line Items]
Increase (decrease) in valuation allowance	$ 15,100,000
Tax Year 2017
Income Tax Contingency [Line Items]
Repatriation on certain foreign earnings from prior and current periods	4.50%
Tax Year 2018
Income Tax Contingency [Line Items]
Repatriation on certain foreign earnings from prior and current periods	1.20%

Income Taxes - Effective Income Tax Rate Reconciliation (Details)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Income Tax Contingency [Line Items]
Federal statutory income tax rate	21.00%	35.00%	35.00%
Total foreign tax rate differential:	(5.80%)	(11.10%)	(5.60%)
State and local tax, net	2.80%	1.40%	2.10%
Tax on GILTI	1.50%	0.00%	0.00%
Repatriation on certain foreign earnings from prior and current periods	5.70%	0.40%	0.00%
Tax benefits on certain foreign investments	0.00%	(6.80%)	(1.90%)
Domestic production activities deduction	(0.70%)	(1.90%)	(1.50%)
Amended prior period tax returns and corresponding favorable audit adjustments	(0.00%)	(3.60%)	(1.30%)
Net impact of uncertain tax positions	(0.40%)	2.20%	(1.10%)
Changes in valuation allowances	(1.80%)	0.70%	0.40%
U.S. tax reform, transition tax	0.80%	11.30%	0.00%
U.S. tax reform, tax effect on net deferred tax liabilities	(3.50%)	(9.50%)	(0.00%)
Other	(1.10%)	0.10%	0.60%
Effective income tax rate	18.50%	18.20%	26.70%
Asia
Income Tax Contingency [Line Items]
Total foreign tax rate differential:	0.20%	(1.20%)	(1.20%)
Europe
Income Tax Contingency [Line Items]
Total foreign tax rate differential:	(6.00%)	(8.60%)	(2.70%)
Canada and Mexico
Income Tax Contingency [Line Items]
Total foreign tax rate differential:	0.00%	(1.30%)	(1.70%)

Income Taxes - Components Of Deferred Tax Liabilities And Assets (Details) - USD ($) $ in Millions	Dec. 31, 2018	Dec. 31, 2017
Deferred tax assets:
Pension and other post-retirement benefits	$ 8.2	$ 7.3
Employment costs	20.1	22.0
Environmental reserves	29.0	29.4
Net operating loss carryforwards	48.8	42.3
Other, net	39.8	20.0
Gross deferred tax assets	145.9	121.0
Valuation allowances	(15.2)	(21.4)
Total deferred tax assets, net of valuation allowances	130.7	99.6
Deferred tax liabilities:
Property, plant and equipment	(33.9)	(20.7)
Goodwill and intangibles	(101.5)	(98.7)
Other, net	(14.4)	(1.0)
Total deferred tax liabilities	(149.8)	(120.4)
Net deferred tax (liabilities) assets	(19.1)	(20.8)
Consolidated Balance Sheets:
Non-current deferred income tax assets	50.2	19.5
Non-current deferred income tax liabilities	$ (69.3)	$ (40.3)

Income Taxes - Changes In Unrecognized Tax Benefits (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]
Balance as of January 1	$ 18.6	$ 7.9	$ 11.3
Additions based on tax positions related to the current year	1.3	9.2	0.3
Additions for tax positions of prior years	1.1	1.8	1.2
Balance related to acquired businesses	0.0	0.0	0.0
Reductions for tax positions of prior years	(2.8)	(0.3)	0.0
Decreases as a result of lapse of statute of limitations	(0.2)	(0.2)	(4.2)
Settlements and other	(1.4)	0.0	(0.3)
Other, net	0.1	0.2	(0.4)
Balance as of December 31	$ 16.7	$ 18.6	$ 7.9

Share-Based Compensation - Narrative (Details) - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	May 31, 2017
Share-Based Compensation Arrangement By Share-based Payment Award [Line Items]
Shares reserved for grant (in shares)				2,500,000.0
Stock appreciation rights
Share-Based Compensation Arrangement By Share-based Payment Award [Line Items]
SARs granted (in shares)	300,000	500,000	500,000
Vesting period	3 years
SARs granted appreciation cap percentage	200.00%
Forfeitures percentage	3.00%
Intrinsic value of SARS exercised	$ 6.5	$ 7.6	$ 2.8
Unrecognized compensation cost	$ 2.7
Weighted average award vesting period	23 months
Nonvested, balance (in shares)	1,800,000	1,800,000
Weighted-average grant date fair value (in usd per share)	$ 32.14	$ 28.62
Stock appreciation rights \| Maximum
Share-Based Compensation Arrangement By Share-based Payment Award [Line Items]
Stock awards expiration	10 years
Restricted stock units
Share-Based Compensation Arrangement By Share-based Payment Award [Line Items]
Vesting period	21 months
Unrecognized compensation cost	$ 8.1
RSUs Granted (in shares)	200,000	300,000	200,000
Nonvested, balance (in shares)	600,000
Weighted-average grant date fair value (in usd per share)	$ 34.80
Vests Rateably over 3 Years \| Stock appreciation rights
Share-Based Compensation Arrangement By Share-based Payment Award [Line Items]
Award vesting percentage	33.33%

Share-Based Compensation - Summary Of Compensation Expense (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Share-Based Compensation Arrangement By Share-based Payment Award [Line Items]
Total share-based compensation	$ 10.9	$ 10.1	$ 7.7
Stock appreciation rights
Share-Based Compensation Arrangement By Share-based Payment Award [Line Items]
Total share-based compensation	4.4	4.2	3.3
Performance shares
Share-Based Compensation Arrangement By Share-based Payment Award [Line Items]
Total share-based compensation	0.6	0.6	0.0
Restricted stock units
Share-Based Compensation Arrangement By Share-based Payment Award [Line Items]
Total share-based compensation	$ 5.9	$ 5.3	$ 4.4

Share-Based Compensation - Summary Of Assumptions Related To Grants (Details) - Stock appreciation rights - $ / shares	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Share-Based Compensation Arrangement By Share-based Payment Award [Line Items]
Expected volatility	41.00%	41.00%	41.00%
Expected dividends	1.67%	1.58%	1.92%
Expected term (in years)	6 years 6 months	6 years 6 months	6 years 8 months 12 days
Risk-free rate	3.06%	2.72%	1.90%
Value of SARs granted (in dollars per share)	$ 14.82	$ 12.01	$ 8.29

Share-Based Compensation - Summary Of Stock Appreciation Rights (Details) - Stock Appreciation Rights - USD ($) $ / shares in Units, shares in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Shares
Shares outstanding, beginning balance (in shares)	1.8
Granted, Shares (in shares)	0.3	0.5	0.5
Exercised, Shares (in shares)	(0.3)
Forfeited or expired, Shares (in shares)	0.0
Shares outstanding, ending balance (in shares)	1.8	1.8
Outstanding, vested and exercisable (in shares)	1.0
Weighted-Average Exercise Price Per Share
Weighted-Average Exercise Price Per Share, beginning balance (in usd per share)	$ 28.62
Granted, Weighted-Average Exercise Price Per Share (in usd per share)	41.89
Exercised, Weighted-Average Exercise Price Per Share (in usd per share)	21.83
Forfeited or expired, Weighted-Average Exercise Price Per Share (in usd per share)	37.31
Weighted-Average Exercise Price Per Share, ending balance (in usd per share)	32.14	$ 28.62
Outstanding, vested and exercisable, Weighted Average Exercise Price Per Share (in usd per share)	$ 28.83
Weighted-Average Remaining Contractual Term And Aggregate Intrinsic Value
Outstanding, Weighted-Average Remaining Contractual Term	6 years 9 months 7 days	6 years 10 months 6 days
Vested and exercisable, Weighted-Average Remaining Contractual Term	5 years 8 months 1 day
Share-Based Compensation Arrangement By Share-Based Payment Award, Equity Instruments Other Than Options, Outstanding Including Vested And Nonvested, Aggregate Intrinsic Value	$ 4.0	$ 27.0
Vested and exercisable, Aggregate Intrinsic Value	$ 3.5

Segment Information - Narrative (Details) grade_resin in Thousands	7 Months Ended	12 Months Ended
	Jul. 19, 2017 segment	Dec. 31, 2018 segment grade_resin supplier injection_molder_extruder
Segment Reporting [Abstract]
Number of reportable segments \| segment	5	4
Number of grades of resins sold by polyone distribution (more than) \| grade_resin		4
Number of products sold \| injection_molder_extruder		6,500
Number of suppliers represented by PolyOne distribution (more than) \| supplier		25

Segment Information - Schedule Of Segment Information (Details) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Segment Reporting Information [Line Items]
Sales	$ 834.0	$ 883.0	$ 914.8	$ 901.6	$ 800.6	$ 818.5	$ 814.1	$ 796.7	$ 3,533.4	$ 3,229.9	$ 2,938.6
Operating Income	47.0	$ 70.5	$ 77.4	$ 78.8	47.1	$ 65.7	$ 78.0	$ 82.0	273.7	272.8	267.7
Depreciation and amortization									88.5	97.4	100.5
Capital Expenditures									76.0	79.6	84.2
Total Assets	2,723.3				2,705.3				2,723.3	2,705.3	2,735.8
Assets held for sale, depreciation and amortization											25.8
Assets held for sale, capital expenditures											18.6
Assets held-for-sale											433.9
Color, Additives and Inks
Segment Reporting Information [Line Items]
Sales									1,040.6	877.7	778.9
Specialty Engineered Materials
Segment Reporting Information [Line Items]
Sales									593.6	574.8	516.4
Performance Products and Solutions
Segment Reporting Information [Line Items]
Sales									652.4	639.6	589.2
Distribution
Segment Reporting Information [Line Items]
Sales									1,246.8	1,137.8	1,054.1
Operating Segments \| Color, Additives and Inks
Segment Reporting Information [Line Items]
Sales									1,046.5	893.2	797.7
Operating Income									158.5	138.6	127.5
Depreciation and amortization									44.3	41.2	40.2
Capital Expenditures									22.9	21.2	20.6
Total Assets	1,235.1				1,146.8				1,235.1	1,146.8	923.8
Operating Segments \| Specialty Engineered Materials
Segment Reporting Information [Line Items]
Sales									645.8	624.3	565.8
Operating Income									72.3	75.5	81.1
Depreciation and amortization									23.2	21.1	18.3
Capital Expenditures									25.2	23.4	19.4
Total Assets	596.2				545.1				596.2	545.1	542.8
Operating Segments \| Performance Products and Solutions
Segment Reporting Information [Line Items]
Sales									735.8	720.6	668.5
Operating Income									73.6	77.1	74.4
Depreciation and amortization									15.9	15.5	15.0
Capital Expenditures									19.5	17.2	12.4
Total Assets	275.4				275.8				275.4	275.8	241.8
Operating Segments \| Distribution
Segment Reporting Information [Line Items]
Sales									1,265.4	1,154.6	1,071.0
Operating Income									71.5	72.6	68.2
Depreciation and amortization									0.7	0.8	0.7
Capital Expenditures									0.1	0.5	0.2
Total Assets	249.0				250.9				249.0	250.9	207.0
Intersegment Eliminations
Segment Reporting Information [Line Items]
Sales									(160.1)	(162.8)	(164.4)
Intersegment Eliminations \| Color, Additives and Inks
Segment Reporting Information [Line Items]
Sales									5.9	15.5	18.8
Intersegment Eliminations \| Specialty Engineered Materials
Segment Reporting Information [Line Items]
Sales									52.2	49.5	49.4
Intersegment Eliminations \| Performance Products and Solutions
Segment Reporting Information [Line Items]
Sales									83.4	81.0	79.3
Intersegment Eliminations \| Distribution
Segment Reporting Information [Line Items]
Sales									18.6	16.8	16.9
Corporate and Eliminations
Segment Reporting Information [Line Items]
Operating Income									(102.2)	(91.0)	(83.5)
Depreciation and amortization									4.4	4.2	4.0
Capital Expenditures									8.3	9.3	13.0
Total Assets	$ 367.6				$ 486.7				$ 367.6	486.7	386.5
Continuing Operations
Segment Reporting Information [Line Items]
Depreciation and amortization										82.8	104.0
Capital Expenditures										$ 71.6	$ 84.2

Segment Information - Schedule Of Revenue And Long-Lived Assets (Details) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Segment Reporting Information [Line Items]
Sales	$ 834.0	$ 883.0	$ 914.8	$ 901.6	$ 800.6	$ 818.5	$ 814.1	$ 796.7	$ 3,533.4	$ 3,229.9	$ 2,938.6
Long lived assets	495.4				461.6				495.4	461.6	426.3
UNITED STATES
Segment Reporting Information [Line Items]
Sales									2,030.4	1,910.8	1,767.8
Long lived assets	290.0				279.7				290.0	279.7	268.3
Europe
Segment Reporting Information [Line Items]
Sales									549.9	455.7	415.2
Long lived assets	116.4				97.0				116.4	97.0	86.6
Canada
Segment Reporting Information [Line Items]
Sales									255.0	251.1	237.7
Long lived assets	10.7				8.2				10.7	8.2	7.2
Asia
Segment Reporting Information [Line Items]
Sales									346.4	313.4	266.9
Long lived assets	58.9				56.2				58.9	56.2	44.6
Mexico
Segment Reporting Information [Line Items]
Sales									331.7	279.8	233.7
Long lived assets	17.7				18.5				17.7	18.5	18.5
South America
Segment Reporting Information [Line Items]
Sales									20.0	19.1	17.3
Long lived assets	$ 1.7				$ 2.0				$ 1.7	$ 2.0	$ 1.1

Derivatives and Hedging (Narrative) (Details) € in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2018 USD ($)	Dec. 31, 2017 USD ($)	Dec. 31, 2016 USD ($)	Aug. 24, 2018 USD ($) swap	Jul. 25, 2018 EUR (€) swap
Derivative [Line Items]
Unrealized gains (losses), cash flow hedge	$ (1.3)	$ 0.0	$ 0.0
Net Investment Hedging \| Cross Currency Swaps
Derivative [Line Items]
Notional amount \| €					€ 250.0
Unrealized gains	2.0
Cash Flow Hedging \| Interest Rate Swap
Derivative [Line Items]
Notional amount				$ 150.0
Number of interest rate swaps \| swap				2
Floating rate debt				$ 150.0
Floating rate				2.732%
Unrealized gains (losses), cash flow hedge	(1.3)
Interest Expense, Net \| Net Investment Hedging \| Cross Currency Swaps
Derivative [Line Items]
Number of cross currency swaps \| swap					6
Conversion benefit	2.0
Interest Expense, Net \| Cash Flow Hedging \| Interest Rate Swap
Derivative [Line Items]
Expense recognized	$ 0.3

Derivatives and Hedging (Fair Value Of Derivatives) (Details) - Designated as Hedging Instrument - USD ($) $ in Millions	Dec. 31, 2018	Dec. 31, 2017
Fair Value Hedging \| Cross Currency Swaps \| Other non-current liabilities
Derivatives, Fair Value [Line Items]
Liabilities	$ 1.7	$ 0.0
Net Investment Hedging \| Interest Rate Swap \| Other non-current assets
Derivatives, Fair Value [Line Items]
Assets	$ 2.6	$ 0.0

Selected Quarterly Financial Data (Unaudited) - Schedule Of Quarterly Financial Data (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended									12 Months Ended
	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Selected Quarterly Financial Information [Abstract]
Sales	$ 834.0	$ 883.0	$ 914.8	$ 901.6	$ 800.6	$ 818.5	$ 814.1	$ 796.7		$ 3,533.4	$ 3,229.9	$ 2,938.6
Gross Margin	165.0	184.9	196.5	198.5	169.3	179.5	187.9	182.2		744.9	718.9	676.4
Operating income	47.0	70.5	77.4	78.8	47.1	65.7	78.0	82.0		$ 273.7	$ 272.8	$ 267.7
Net income from continuing operations	11.4	50.2	51.5	47.7	35.5	40.2	49.6	48.3
Net income from continuing operations attributable to PolyOne shareholders	$ 11.6	$ 50.2	$ 51.6	$ 47.7	$ 35.4	$ 40.2	$ 49.6	$ 48.3
Net income from continuing operations per common share attributable to PolyOne common shareholders:
Basic net income - continuing operations (in usd per share)	$ 0.15	$ 0.63	$ 0.65	$ 0.59	$ 0.44	$ 0.50	$ 0.61	$ 0.58		$ 2.02	$ 2.13	$ 1.98
Diluted net income - continuing operations (in usd per share)	$ 0.15	$ 0.62	$ 0.64	$ 0.59	$ 0.43	$ 0.49	$ 0.60	$ 0.58		$ 2.00	$ 2.11	$ 1.96
Mark-to-market actuarial net (losses) gains	$ (15.6)				$ (3.3)				$ 8.4	$ (15.6)	$ 3.3	$ (8.4)
Environmental remediation expense	3.9	$ 7.5	$ 8.7	$ 3.1		$ 4.9	$ 5.0	$ 2.2
Acquisition related costs and adjustments	$ 2.0		1.9	$ 1.9		2.6
Reimbursement of previously incurred environmental costs		$ 1.5	$ 1.6			$ 2.5	$ 3.8			$ 4.3	$ 9.1	$ 6.1
Tax adjustments from Tax Cuts and Jobs Act					$ 10.7

Subsequent Events - Narrative (Details) - USD ($) $ in Millions		5 Months Ended	12 Months Ended
	Jan. 02, 2019	May 31, 2018	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Subsequent Event [Line Items]
Business acquisitions, net of cash acquired		$ 118.5	$ 98.6	$ 163.8	$ 164.2
Contingent consideration, earn-out period		2 years
Fiber-Line \| Subsequent Event
Subsequent Event [Line Items]
Business acquisitions, net of cash acquired	$ 120.2
Contingent consideration, earn-out period	2 years