10-Q

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

FORM 10-Q

(Mark One)

☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the quarterly period ended June 30, 2020

OR

☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the transition period from              to             

Commission file number 1-1070

Olin Corporation

(Exact name of registrant as specified in its charter)

Virginia	13-1872319
(State or other jurisdiction of incorporation or organization)	(I.R.S. Employer Identification No.)

190 Carondelet Plaza,	Suite 1530,	Clayton,	MO	63105
(Address of principal executive offices)				(Zip Code)

(314) 480-1400

(Registrant’s telephone number, including area code)

Securities registered pursuant to Section 12(b) of the Exchange Act:

Title of each class:	Trading symbol:	Name of each exchange on which registered:
Common Stock, $1.00 par value per share	OLN	New York Stock Exchange

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days.    Yes ☒ No ☐

Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit such files).    Yes ☒ No ☐

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, smaller reporting company, or an emerging growth company. See the definitions of “large accelerated filer,” “accelerated filer,” “smaller reporting company,” and “emerging growth company” in Rule 12b-2 of the Exchange Act.

Large accelerated filer ☒ Accelerated filer ☐ Non-accelerated filer ☐ Smaller reporting company ☐ Emerging growth company ☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act).  Yes ☐ No ☒

As of June 30, 2020, 157,862,051 shares of the registrant’s common stock were outstanding.

1

TABLE OF CONTENTS FOR FORM 10-Q		Page
Part I — Financial Information		3
Item 1.	Financial Statements	3
	Condensed Balance Sheets	3
	Condensed Statements of Operations	4
	Condensed Statements of Comprehensive Income (Loss)	5
	Condensed Statements of Shareholders’ Equity	6
	Condensed Statements of Cash Flows	8
	Notes to Condensed Financial Statements	9
Item 2.	Management’s Discussion and Analysis of Financial Condition and Results of Operations	40
	Business Background	40
	Executive Summary	40
	Consolidated Results of Operations	42
	Segment Results	44
	Outlook	47
	Environmental Matters	48
	Legal Matters and Contingencies	49
	Liquidity, Investment Activity and Other Financial Data	50
Item 3.	Quantitative and Qualitative Disclosures about Market Risk	55
Item 4.	Controls and Procedures	56
	Cautionary Statement Regarding Forward-Looking Statements	57
Part II — Other Information		59
Item 1.	Legal Proceedings	59
Item 1A.	Risk Factors	59
Item 2.	Unregistered Sales of Equity Securities and Use of Proceeds	59
Item 3.	Defaults Upon Senior Securities	59
Item 4.	Mine Safety Disclosures	60
Item 5.	Other Information	60
Item 6.	Exhibits	60
SIGNATURES		61

2

Part I — Financial Information

Item 1.  Financial Statements.

OLIN CORPORATION AND CONSOLIDATED SUBSIDIARIES

Condensed Balance Sheets

(In millions, except per share data)

(Unaudited)

	June 30, 2020			December 31, 2019			June 30, 2019
Assets
Current assets:
Cash and cash equivalents	$	237.9		$	220.9		$	126.9
Receivables, net	700.2			760.4			848.2
Income taxes receivable	17.6			13.9			23.4
Inventories, net	619.1			695.7			698.9
Other current assets	42.0			23.1			28.8
Total current assets	1,616.8			1,714.0			1,726.2
Property, plant and equipment (less accumulated depreciation of $3,484.9, $3,268.1 and $3,000.0)	3,234.9			3,323.8			3,410.5
Operating lease assets, net	371.8			377.8			295.8
Deferred income taxes	38.3			35.3			28.1
Other assets	1,179.7			1,169.1			1,174.5
Intangible assets, net	416.9			448.1			480.6
Goodwill	2,119.7			2,119.7			2,119.6
Total assets	$	8,978.1		$	9,187.8		$	9,235.3
Liabilities and Shareholders’ Equity
Current liabilities:
Current installments of long-term debt	$	1.8		$	2.1		$	1.1
Accounts payable	520.8			651.9			669.2
Income taxes payable	7.7			19.8			9.5
Current operating lease liabilities	77.3			79.3			71.4
Accrued liabilities	318.7			329.1			298.9
Total current liabilities	926.3			1,082.2			1,050.1
Long-term debt	4,073.9			3,338.7			3,232.6
Operating lease liabilities	299.2			303.4			229.3
Accrued pension liability	768.0			797.7			653.6
Deferred income taxes	414.5			454.5			506.4
Other liabilities	307.3			793.8			792.5
Total liabilities	6,789.2			6,770.3			6,464.5
Commitments and contingencies
Shareholders’ equity:
Common stock, $1.00 par value per share:  authorized, 240.0 shares; issued and outstanding, 157.9, 157.7 and 164.3 shares	157.9			157.7			164.3
Additional paid-in capital	2,127.0			2,122.1			2,229.2
Accumulated other comprehensive loss	(773.9		)	(803.4		)	(660.4		)
Retained earnings	677.9			941.1			1,037.7
Total shareholders’ equity	2,188.9			2,417.5			2,770.8
Total liabilities and shareholders’ equity	$	8,978.1		$	9,187.8		$	9,235.3

The accompanying notes to condensed financial statements are an integral part of the condensed financial statements.

3

OLIN CORPORATION AND CONSOLIDATED SUBSIDIARIES

Condensed Statements of Operations

(In millions, except per share data)

(Unaudited)

	Three Months Ended June 30,						Six Months Ended June 30,
	2020			2019			2020			2019
Sales	$	1,241.2		$	1,592.9		$	2,666.3		$	3,146.3
Operating expenses:
Cost of goods sold	1,235.7			1,463.7			2,609.9			2,811.0
Selling and administration	99.7			97.0			196.4			204.0
Restructuring charges	1.7			3.8			3.4			7.8
Other operating income	0.1			0.1			0.1			0.2
Operating (loss) income	(95.8		)	28.5			(143.3		)	123.7
Interest expense	69.4			57.9			132.5			115.3
Interest income	0.2			0.3			0.3			0.5
Non-operating pension income	4.9			4.2			9.5			8.1
Other income	—			—			—			11.2
Income (loss) before taxes	(160.1		)	(24.9		)	(266.0		)	28.2
Income tax (benefit) provision	(40.0		)	(4.9		)	(65.9		)	6.5
Net (loss) income	$	(120.1	)	$	(20.0	)	$	(200.1	)	$	21.7
Net (loss) income per common share:
Basic	$	(0.76	)	$	(0.12	)	$	(1.27	)	$	0.13
Diluted	$	(0.76	)	$	(0.12	)	$	(1.27	)	$	0.13
Average common shares outstanding:
Basic	157.9			164.6			157.8			164.8
Diluted	157.9			164.6			157.8			165.7

The accompanying notes to condensed financial statements are an integral part of the condensed financial statements.

4

OLIN CORPORATION AND CONSOLIDATED SUBSIDIARIES

Condensed Statements of Comprehensive Income (Loss)

(In millions)

(Unaudited)

	Three Months Ended June 30,						Six Months Ended June 30,
	2020			2019			2020			2019
Net (loss) income	$	(120.1	)	$	(20.0	)	$	(200.1	)	$	21.7
Other comprehensive income (loss), net of tax:
Foreign currency translation adjustments, net	8.2			3.3			(0.8		)	(5.0		)
Unrealized gains (losses) on derivative contracts, net	30.0			(12.1		)	12.1			(15.4		)
Amortization of prior service costs and actuarial losses, net	9.0			5.3			18.2			11.0
Total other comprehensive income (loss), net of tax	47.2			(3.5		)	29.5			(9.4		)
Comprehensive (loss) income	$	(72.9	)	$	(23.5	)	$	(170.6	)	$	12.3

The accompanying notes to condensed financial statements are an integral part of the condensed financial statements.

5

OLIN CORPORATION AND CONSOLIDATED SUBSIDIARIES

Condensed Statements of Shareholders’ Equity

(In millions, except per share data)

(Unaudited)

	Six Months Ended June 30, 2020
	Common Stock			Additional Paid-In Capital			Accumulated Other Comprehensive Loss			Retained Earnings			Total Shareholders’ Equity
	Shares Issued	Par Value
Balance at January 1, 2020	157.7	$	157.7	$	2,122.1		$	(803.4	)	$	941.1		$	2,417.5
Net loss	—	—		—			—			(80.0		)	(80.0		)
Other comprehensive loss	—	—		—			(17.7		)	—			(17.7		)
Dividends paid:
Common stock ($0.20 per share)	—	—		—			—			(31.5		)	(31.5		)
Common stock issued for:
Stock options exercised	—	—		0.7			—			—			0.7
Other transactions	0.1	0.1		2.6			—			—			2.7
Stock-based compensation	—	—		(2.6		)	—			—			(2.6		)
Balance at March 31, 2020	157.8	157.8		2,122.8			(821.1		)	829.6			2,289.1
Net loss	—	—		—			—			(120.1		)	(120.1		)
Other comprehensive income	—	—		—			47.2			—			47.2
Dividends paid:
Common stock ($0.20 per share)	—	—		—			—			(31.6		)	(31.6		)
Common stock issued for:
Other transactions	0.1	0.1		0.3			—			—			0.4
Stock-based compensation	—	—		3.9			—			—			3.9
Balance at June 30, 2020	157.9	$	157.9	$	2,127.0		$	(773.9	)	$	677.9		$	2,188.9

The accompanying notes to condensed financial statements are an integral part of the condensed financial statements.

6

OLIN CORPORATION AND CONSOLIDATED SUBSIDIARIES

Condensed Statements of Shareholders’ Equity

(In millions, except per share data)

(Unaudited)

	Six Months Ended June 30, 2019
	Common Stock					Additional Paid-In Capital			Accumulated Other Comprehensive Loss			Retained Earnings			Total Shareholders’ Equity
	Shares Issued		Par Value
Balance at January 1, 2019	165.3		$	165.3		$	2,247.4		$	(651.0	)	$	1,070.5		$	2,832.2
Lease accounting adoption adjustment	—		—			—			—			11.2			11.2
Net income	—		—			—			—			41.7			41.7
Other comprehensive loss	—		—			—			(5.9		)	—			(5.9		)
Dividends paid:
Common stock ($0.20 per share)	—		—			—			—			(33.0		)	(33.0		)
Common stock repurchased and retired	(0.6	)	(0.6		)	(12.6		)	—			—			(13.2		)
Common stock issued for:
Stock options exercised	0.1		0.1			1.3			—			—			1.4
Other transactions	0.1		0.1			0.3			—			—			0.4
Stock-based compensation	—		—			2.8			—			—			2.8
Balance at March 31, 2019	164.9		164.9			2,239.2			(656.9		)	1,090.4			2,837.6
Net loss	—		—			—			—			(20.0		)	(20.0		)
Other comprehensive loss	—		—			—			(3.5		)	—			(3.5		)
Dividends paid:
Common stock ($0.20 per share)	—		—			—			—			(32.7		)	(32.7		)
Common stock repurchased and retired	(0.6	)	(0.6		)	(12.9		)	—			—			(13.5		)
Common stock issued for:
Stock options exercised	—		—			0.1			—			—			0.1
Other transactions	—		—			0.9			—			—			0.9
Stock-based compensation	—		—			1.9			—			—			1.9
Balance at June 30, 2019	164.3		$	164.3		$	2,229.2		$	(660.4	)	$	1,037.7		$	2,770.8

The accompanying notes to condensed financial statements are an integral part of the condensed financial statements.

7

OLIN CORPORATION AND CONSOLIDATED SUBSIDIARIES

Condensed Statements of Cash Flows

(In millions)

(Unaudited)

	Six Months Ended June 30,
	2020			2019
Operating Activities
Net (loss) income	$	(200.1	)	$	21.7
Adjustments to reconcile net (loss) income to net cash and cash equivalents provided by (used for) operating activities:
Gain on disposition of non-consolidated affiliate	—			(11.2		)
Stock-based compensation	4.1			5.3
Depreciation and amortization	283.0			304.3
Deferred income taxes	(52.1		)	(16.6		)
Qualified pension plan contributions	(1.2		)	(0.7		)
Qualified pension plan income	(5.9		)	(4.6		)
Change in:
Receivables	64.1			(70.8		)
Income taxes receivable/payable	(15.8		)	(30.6		)
Inventories	75.7			9.6
Other current assets	(18.3		)	2.4
Accounts payable and accrued liabilities	(74.9		)	(1.9		)
Other assets	0.6			(2.3		)
Other noncurrent liabilities	(5.6		)	29.4
Other operating activities	1.8			2.1
Net operating activities	55.4			236.1
Investing Activities
Capital expenditures	(166.5		)	(191.3		)
Payments under ethylene long-term supply contracts	(461.0		)	—
Payments under other long-term supply contracts	(75.8		)	—
Proceeds from disposition of non-consolidated affiliate	—			20.0
Net investing activities	(703.3		)	(171.3		)
Financing Activities
Long-term debt:
Borrowings	1,163.2			25.0
Repayments	(425.8		)	(50.6		)
Common stock repurchased and retired	—			(26.7		)
Stock options exercised	0.5			1.5
Dividends paid	(63.1		)	(65.7		)
Debt issuance costs	(9.6		)	—
Net financing activities	665.2			(116.5		)
Effect of exchange rate changes on cash and cash equivalents	(0.3		)	(0.2		)
Net increase (decrease) in cash and cash equivalents	17.0			(51.9		)
Cash and cash equivalents, beginning of year	220.9			178.8
Cash and cash equivalents, end of period	$	237.9		$	126.9
Cash paid for interest and income taxes:
Interest, net	$	122.3		$	108.2
Income taxes, net of refunds	$	3.1		$	44.3
Non-cash investing activities:
Decrease in capital expenditures included in accounts payable and accrued liabilities	$	38.6		$	10.1

The accompanying notes to condensed financial statements are an integral part of the condensed financial statements.

8

OLIN CORPORATION AND CONSOLIDATED SUBSIDIARIES

Notes to Condensed Financial Statements

(Unaudited)

NOTE 1. DESCRIPTION OF BUSINESS

Olin Corporation (Olin) is a Virginia corporation, incorporated in 1892, having its principal executive offices in Clayton, MO.  We are a manufacturer concentrated in three business segments:  Chlor Alkali Products and Vinyls, Epoxy and Winchester.  The Chlor Alkali Products and Vinyls segment manufactures and sells chlorine and caustic soda, ethylene dichloride (EDC) and vinyl chloride monomer, methyl chloride, methylene chloride, chloroform, carbon tetrachloride, perchloroethylene, trichloroethylene and vinylidene chloride, hydrochloric acid, hydrogen, bleach products and potassium hydroxide.  The Epoxy segment produces and sells a full range of epoxy materials, including allyl chloride, epichlorohydrin, liquid epoxy resins, solid epoxy resins and downstream products such as differentiated epoxy resins and additives. The Winchester segment produces and sells sporting ammunition, reloading components, small caliber military ammunition and components, and industrial cartridges.

We have prepared the condensed financial statements included herein, without audit, pursuant to the rules and regulations of the U.S. Securities and Exchange Commission (SEC). The preparation of the financial statements requires estimates and assumptions that affect amounts reported and disclosed in the financial statements and related notes. In our opinion, these financial statements reflect all adjustments (consisting only of normal accruals), which are necessary to present fairly the results for interim periods. Certain information and footnote disclosures normally included in financial statements prepared in accordance with generally accepted accounting principles have been condensed or omitted pursuant to such rules and regulations; however, we believe that the disclosures are appropriate. We recommend that you read these condensed financial statements in conjunction with the financial statements, accounting policies and the notes thereto and Management’s Discussion and Analysis of Financial Condition and Results of Operations included in our Annual Report on Form 10-K for the year ended December 31, 2019. Certain reclassifications were made to prior year amounts to conform to the 2020 presentation.

NOTE 2. RESTRUCTURING CHARGES

On December 11, 2019, we announced that we had made the decision to permanently close a chlor alkali plant with a capacity of 230,000 tons and our vinylidene chloride (VDC) production facility, both in Freeport, TX.  These closures are expected to be completed before the end of 2020.  For both the three and six months ended June 30, 2020, we recorded pretax restructuring charges of $0.5 million for facility exit costs related to these actions. We expect to incur additional restructuring charges through 2024 of approximately $50 million related to these actions.

On December 10, 2018, we announced that we had made the decision to permanently close the ammunition assembly operations at our Winchester facility in Geelong, Australia. Subsequent to the facility’s closure, product for customers in the region will be sourced from Winchester manufacturing facilities located in the United States. For the three and six months ended June 30, 2019, we recorded pretax restructuring charges of $0.2 million and $0.3 million, respectively, for facility exit costs and lease and other contract termination costs related to this action. For the six months ended June 30, 2019, we recorded additional pretax restructuring charges of $1.4 million for employee severance and related benefit costs related to our Winchester operations.

On March 21, 2016, we announced that we had made the decision to close a combined total of 433,000 tons of chlor alkali capacity across three separate locations. Associated with this action, we have permanently closed our Henderson, NV chlor alkali plant with 153,000 tons of capacity and have reconfigured the site to manufacture bleach and distribute caustic soda and hydrochloric acid. Also, the capacity of our Niagara Falls, NY chlor alkali plant has been reduced from 300,000 tons to 240,000 tons and the chlor alkali capacity at our Freeport, TX facility was reduced by 220,000 tons. This 220,000 ton reduction was entirely from diaphragm cell capacity. For the three months ended June 30, 2020 and 2019, we recorded pretax restructuring charges of $1.2 million and $3.6 million, respectively, for facility exit costs, employee severance and related benefit costs and lease and other contract termination costs related to these actions. For the six months ended June 30, 2020 and 2019, we recorded pretax restructuring charges of $2.9 million and $6.1 million, respectively, for facility exit costs, employee severance and related benefit costs and lease and other contract termination costs related to these actions. We expect to incur additional restructuring charges through 2021 of approximately $3 million related to these capacity reductions.

9

The following table summarizes the 2020 and 2019 activities by major component of these restructuring actions and the remaining balances of accrued restructuring costs as of June 30, 2020 and 2019:

	Employee severance and related benefit costs			Lease and other contract termination costs			Facility exit costs			Total
	($ in millions)
Balance at January 1, 2019	$	1.5		$	6.0		$	0.7		$	8.2
Restructuring charges:
First quarter	1.4			0.1			2.5			4.0
Second quarter	0.4			0.2			3.2			3.8
Amounts utilized	(3.3		)	(1.0		)	(5.5		)	(9.8		)
Balance at June 30, 2019	$	—		$	5.3		$	0.9		$	6.2
Balance at January 1, 2020	$	—		$	3.1		$	—		$	3.1
Restructuring charges:
First quarter	0.1			0.1			1.5			1.7
Second quarter	—			—			1.7			1.7
Amounts utilized	(0.1		)	(0.6		)	(3.2		)	(3.9		)
Balance at June 30, 2020	$	—		$	2.6		$	—		$	2.6

The following table summarizes the cumulative restructuring charges of these restructuring actions by major component through June 30, 2020:

	Chlor Alkali Products and Vinyls				Winchester		Total
	Freeport		Capacity Reductions
	($ in millions)
Write-off of equipment and facility	$	58.9	$	78.1	$	2.6	$	139.6
Employee severance and related benefit costs	—		6.7		2.7		9.4
Facility exit costs	0.5		50.9		0.2		51.6
Employee relocation costs	—		1.7		—		1.7
Lease and other contract termination costs	—		41.0		0.4		41.4
Total cumulative restructuring charges	$	59.4	$	178.4	$	5.9	$	243.7

As of June 30, 2020, we have incurred cash expenditures of $101.5 million and non-cash charges of $139.6 million related to these restructuring actions. The remaining balance of $2.6 million is expected to be paid out through 2021.

NOTE 3. ACCOUNTS RECEIVABLES

On July 16, 2019, our existing $250.0 million Receivables Financing Agreement was extended to July 15, 2022 and downsized to $10.0 million with the option to expand (Receivables Financing Agreement). During the six months ended June 30, 2020, we amended the Receivables Financing Agreement to expand the borrowing capacity to $250.0 million and borrowed $240.7 million, net of repayments. The Receivables Financing Agreement includes a minimum borrowing requirement of 50% of the facility limit or available borrowing capacity, whichever is lesser, beginning on October 1, 2020. The administrative agent for our Receivables Financing Agreement is PNC Bank, National Association.  Under the Receivables Financing Agreement, our eligible trade receivables are used for collateralized borrowings and continue to be serviced by us. In addition, the Receivables Financing Agreement incorporates the secured leverage covenant that is contained in the $1,300.0 million senior secured credit facility. As of June 30, 2020, $326.4 million of our trade receivables were pledged as collateral. As of June 30, 2020, we had $240.7 million drawn and zero additional borrowing capacity under the Receivables Financing Agreement as a result of a limitation on our borrowing base. As of December 31, 2019 and June 30, 2019, we had zero and $150.0 million, respectively, drawn under the Receivables Financing Agreement.

10

Olin also has trade accounts receivable factoring arrangements (AR Facilities) and pursuant to the terms of the AR Facilities, certain of our subsidiaries may sell their accounts receivable up to a maximum of $315.0 million. We will continue to service the outstanding accounts sold.  These receivables qualify for sales treatment under ASC 860 “Transfers and Servicing” and, accordingly, the proceeds are included in net cash provided by operating activities in the condensed statements of cash flows.  The following table summarizes the AR Facilities activity:

	June 30,
	2020			2019
	($ in millions)
Balance at beginning of year	$	63.1		$	132.4
Gross receivables sold	457.5			522.4
Payments received from customers on sold accounts	(458.9		)	(556.1		)
Balance at end of period	$	61.7		$	98.7

The factoring discount paid under the AR Facilities is recorded as interest expense on the condensed statements of operations. The factoring discount was $0.4 million and $1.0 million for the three months ended June 30, 2020 and 2019, respectively, and $1.0 million and $1.5 million for the six months ended June 30, 2020 and 2019, respectively. The agreements are without recourse and therefore no recourse liability had been recorded as of June 30, 2020, December 31, 2019, or June 30, 2019.

NOTE 4. ALLOWANCE FOR DOUBTFUL ACCOUNTS RECEIVABLES

We evaluate the collectibility of financial instruments based on our current estimate of credit losses expected to be incurred over the life of the financial instrument.  The only significant financial instrument which creates exposure to credit losses are customer accounts receivables.  We measure credit losses on uncollected accounts receivable through an allowance for doubtful accounts receivable which is based on a combination of factors including both historical collection experience and reasonable estimates that affect the expected collectibility of the receivable.  These factors include historical bad debt experience, industry conditions of the customer or group of customers, geographical region, credit ratings and general market conditions. We group receivables together for purposes of estimating credit losses when customers have similar risk characteristics; otherwise, the estimation is performed on the individual receivable.

This estimate is periodically adjusted when we become aware of a specific customer’s inability to meet its financial obligations (e.g., bankruptcy filing) or as a result of changes in the overall aging of accounts receivable. While we have a large number of customers that operate in diverse businesses and are geographically dispersed, a general economic downturn in any of the industry segments in which we operate could result in higher than expected defaults, and, therefore, the need to revise estimates for the provision for doubtful accounts could occur.

Allowance for doubtful accounts receivables consisted of the following:

	June 30,
	2020			2019
	($ in millions)
Balance at beginning of year	$	11.9		$	12.9
Provisions charged	0.7			0.9
Write-offs, net of recoveries	—			(2.1		)
Foreign currency translation adjustment	(0.1		)	0.2
Balance at end of period	$	12.5		$	11.9

Provisions charged to operations were $0.5 million and $0.4 million for the three months ended June 30, 2020 and 2019, respectively.

11

NOTE 5. INVENTORIES

Inventories consisted of the following:

	June 30, 2020			December 31, 2019			June 30, 2019
	($ in millions)
Supplies	$	81.0		$	80.5		$	74.6
Raw materials	74.3			74.9			73.1
Work in process	114.9			140.3			140.6
Finished goods	392.7			449.5			469.8
	662.9			745.2			758.1
LIFO reserve	(43.8		)	(49.5		)	(59.2		)
Inventories, net	$	619.1		$	695.7		$	698.9

Inventories are valued at the lower of cost and net realizable value. For U.S. inventories, inventory costs are determined principally by the last-in, first-out (LIFO) method of inventory accounting while for international inventories, inventory costs are determined principally by the first-in, first-out (FIFO) method of inventory accounting. Cost for other inventories has been determined principally by the average-cost method (primarily operating supplies, spare parts and maintenance parts). Elements of costs in inventories included raw materials, direct labor and manufacturing overhead. Inventories under the LIFO method are based on annual estimates of quantities and costs as of year-end; therefore, the condensed financial statements at June 30, 2020 reflect certain estimates relating to inventory quantities and costs at December 31, 2020. The replacement cost of our inventories would have been approximately $43.8 million, $49.5 million and $59.2 million higher than reported at June 30, 2020, December 31, 2019 and June 30, 2019, respectively.

NOTE 6. OTHER ASSETS

Included in other assets were the following:

	June 30, 2020		December 31, 2019		June 30, 2019
	($ in millions)
Supply contracts	$	1,137.9	$	1,112.6	$	1,131.4
Other	41.8		56.5		43.1
Other assets	$	1,179.7	$	1,169.1	$	1,174.5

On January 1, 2019, we sold our 9.1% limited partnership interest in Bay Gas Storage Company, Ltd. (Bay Gas) for $20.0 million. The sale closed on February 7, 2019 which resulted in a gain of $11.2 million for the six months ended June 30, 2019 which was recorded to other income in the condensed statements of operations.

On October 5, 2015 (the Closing Date), we completed the acquisition (the Acquisition) from The Dow Chemical Company (Dow) of its U.S. Chlor Alkali and Vinyl, Global Chlorinated Organics and Global Epoxy businesses (collectively, the Acquired Business). In connection with the Acquisition, Olin and Dow entered into arrangements for the long-term supply of ethylene by Dow to Olin, pursuant to which, among other things, Olin made upfront payments in order to receive ethylene at producer economics and for certain reservation fees and for the option to obtain additional ethylene at producer economics.

On February 27, 2017, we exercised the remaining option to reserve additional ethylene at producer economics from Dow. In connection with the exercise of this option, we also secured a long-term customer arrangement. As a result, an additional payment was made to Dow of $461.0 million during the second quarter of 2020. The original liability was discounted and recorded at present value as of March 31, 2017. The discount amount of $40.9 million was recorded as interest expense from inception through March 31, 2020. For the three months ended June 30, 2019, $4.2 million, and for the six months ended June 30, 2020 and 2019, $4.0 million and $8.2 million, respectively, of interest expense was recorded for accretion on the 2020 payment liability discount.

Amortization expense of $9.4 million for both the three months ended June 30, 2020 and 2019 and $18.8 million for both the six months ended June 30, 2020 and 2019 was recognized within cost of goods sold related to these supply contracts and is

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reflected in depreciation and amortization on the condensed statements of cash flows. The long-term supply contracts are monitored for impairment each reporting period.

During the six months ended June 30, 2020, a payment of $75.8 million was made associated with the resolution of a dispute over the allocation to Olin of certain capital costs incurred at our Plaquemine, LA site after the Closing Date of the Acquisition.

NOTE 7. GOODWILL AND INTANGIBLE ASSETS

Changes in the carrying value of goodwill were as follows:

	Chlor Alkali Products and Vinyls		Epoxy		Total
	($ in millions)
Balance at January 1, 2019	$	1,832.6	$	287.0	$	2,119.6
Foreign currency translation adjustment	—		—		—
Balance at June 30, 2019	$	1,832.6	$	287.0	$	2,119.6
Balance at January 1, 2020	$	1,832.7	$	287.0	2,119.7
Foreign currency translation adjustment	—		—		—
Balance at June 30, 2020	$	1,832.7	$	287.0	$	2,119.7

Goodwill is not amortized, but is reviewed for impairment annually in the fourth quarter and/or when circumstances or other events indicate that impairment may have occurred. Circumstances that are considered as part of the qualitative assessment and could trigger a quantitative impairment test include, but are not limited to:  a significant adverse change in the business climate; a significant adverse legal judgment; adverse cash flow trends; an adverse action or assessment by a government agency; unanticipated competition; sustained decline in our stock price; and a significant restructuring charge within a reporting unit.  As of June 30, 2020, we do not believe it is more likely than not the carrying value exceeded the estimated fair value of our reporting units. During the three months ended March 31, 2020, we identified triggering events associated with a significant overall decrease in our stock price, a significant adverse change in the business climate and a significant reduction in near-term cash flow projections. As a result of these events, we performed a quantitative goodwill impairment test during the first quarter of 2020. We used a discounted cash flow approach to develop the estimated fair value of our reporting units. Based on the aforementioned analysis, the estimated fair value of our reporting units exceeded the carrying value of the reporting units and no impairment charges were recorded.

The discount rate, profitability assumptions and terminal growth rate of our reporting units and the cyclical nature of the chlor alkali industry were the material assumptions utilized in the discounted cash flow model used to estimate the fair value of each reporting unit.  The discount rate reflects a weighted-average cost of capital, which is calculated based on observable market data.  Some of this data (such as the risk free or treasury rate and the pretax cost of debt) are based on the market data at a point in time.  Other data (such as the equity risk premium) are based upon market data over time for a peer group of companies in the chemical manufacturing or distribution industries with a market capitalization premium added, as applicable.

The discounted cash flow analysis requires estimates, assumptions and judgments about future events.  Our analysis uses our internally generated long-range plan.  Our discounted cash flow analysis uses the assumptions in our long-range plan about terminal growth rates, forecasted capital expenditures and changes in future working capital requirements to determine the implied fair value of each reporting unit.  The long-range plan reflects management judgment, supplemented by independent chemical industry analyses which provide multi-year chlor alkali industry operating and pricing forecasts.

We believe the assumptions used in our goodwill impairment analysis are appropriate and result in reasonable estimates of the implied fair value of each reporting unit.  However, given the economic environment and the uncertainties regarding the impact on our business, there can be no assurance that our estimates and assumptions, made for purposes of our goodwill impairment testing, will prove to be an accurate prediction of the future.  In order to evaluate the sensitivity of the fair value calculation on the goodwill impairment test, we applied three separate sensitivities: a hypothetical 10% decrease to the fair value of each reporting unit, a hypothetical decrease of 100-basis points in our terminal growth rate and an increase of 100-basis points in our weighted-average cost of capital to test the fair value calculation. The hypothetical 10% decrease to the fair value of our Chlor Alkali Products and Vinyls reporting unit exceeded the carrying value of the reporting unit, but was not significantly in excess of the carrying value. In all other cases, the estimated fair value of our Epoxy and Chlor Alkali Products

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and Vinyls reporting units derived in these sensitivity calculations did not exceed the carrying value of our reporting units.  If our assumptions regarding future performance are not achieved, we may be required to record goodwill impairment charges in future periods.  It is not possible at this time to determine if any such future impairment charge would result or, if it does, whether such charge would be material.

Intangible assets consisted of the following:

	June 30, 2020							December 31, 2019							June 30, 2019
	Gross Amount		Accumulated Amortization			Net		Gross Amount		Accumulated Amortization			Net		Gross Amount		Accumulated Amortization			Net
	($ in millions)
Customers, customer contracts and relationships	$	673.3	$	(285.3	)	$	388.0	$	673.5	$	(260.9	)	$	412.6	$	674.4	$	(236.3	)	$	438.1
Trade name	7.0		(6.7		)	0.3		7.0		(6.0		)	1.0		7.0		(5.3		)	1.7
Acquired technology	85.1		(57.7		)	27.4		85.1		(51.8		)	33.3		85.3		(45.7		)	39.6
Other	1.8		(0.6		)	1.2		1.8		(0.6		)	1.2		1.8		(0.6		)	1.2
Total intangible assets	$	767.2	$	(350.3	)	$	416.9	$	767.4	$	(319.3	)	$	448.1	$	768.5	$	(287.9	)	$	480.6

NOTE 8. EARNINGS PER SHARE

Basic and diluted net (loss) income per share are computed by dividing net (loss) income by the weighted-average number of common shares outstanding. Diluted net (loss) income per share reflects the dilutive effect of stock-based compensation.

	Three Months Ended June 30,						Six Months Ended June 30,
	2020			2019			2020			2019
Computation of Net (Loss) Income per Share	(In millions, except per share data)
Net (loss) income	$	(120.1	)	$	(20.0	)	$	(200.1	)	$	21.7
Basic shares	157.9			164.6			157.8			164.8
Basic net (loss) income per share	$	(0.76	)	$	(0.12	)	$	(1.27	)	$	0.13
Diluted shares:
Basic shares	157.9			164.6			157.8			164.8
Stock-based compensation	—			—			—			0.9
Diluted shares	157.9			164.6			157.8			165.7
Diluted net (loss) income per share	$	(0.76	)	$	(0.12	)	$	(1.27	)	$	0.13

The computation of dilutive shares does not include 10.3 million and 8.0 million shares for the three months ended June 30, 2020 and 2019, respectively, and 10.3 million and 5.5 million shares for the six months ended June 30, 2020 and 2019, respectively, as their effect would have been anti-dilutive.

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NOTE 9. ENVIRONMENTAL

We are party to various government and private environmental actions associated with past manufacturing facilities and former waste disposal sites. Environmental provisions charged to income, which are included in costs of goods sold, were as follows:

	Three Months Ended June 30,					Six Months Ended June 30,
	2020		2019			2020		2019
	($ in millions)
Provisions charged to income	$	2.8	$	22.0		$	5.4	$	23.8
Recoveries for costs incurred and expensed	—		(4.8		)	—		(4.8		)
Environmental expense	$	2.8	$	17.2		$	5.4	$	19.0

Provisions charged to income for both the three and six months ended June 30, 2019 include a $20.0 million increase in costs at a former manufacturing site resulting from revised remediation estimates as a result of agency action and $4.8 million of recoveries associated with resolving outstanding third party claims against the proceeds from a 2018 environmental insurance settlement.  The condensed balance sheets included reserves for future environmental expenditures to investigate and remediate known sites amounting to $138.6 million, $139.0 million and $144.4 million at June 30, 2020, December 31, 2019 and June 30, 2019, respectively, of which $121.6 million, $122.0 million and $127.4 million, respectively, were classified as other noncurrent liabilities.

Environmental exposures are difficult to assess for numerous reasons, including the identification of new sites, developments at sites resulting from investigatory studies, advances in technology, changes in environmental laws and regulations and their application, changes in regulatory authorities, the scarcity of reliable data pertaining to identified sites, the difficulty in assessing the involvement and financial capability of other Potentially Responsible Parties (PRPs), our ability to obtain contributions from other parties and the lengthy time periods over which site remediation occurs. It is possible that some of these matters (the outcomes of which are subject to various uncertainties) may be resolved unfavorably to us, which could materially adversely affect our financial position or results of operations.

In connection with the October 5, 2015 acquisition of Dow’s U.S. Chlor Alkali and Vinyl, Global Chlorinated Organics and Global Epoxy businesses, the prior owner of the businesses retained liabilities relating to releases of hazardous materials and violations of environmental law to the extent arising prior to October 5, 2015.

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NOTE 10. COMMITMENTS AND CONTINGENCIES

Olin and Oxy Vinyls, L.P. (Oxy) have a long-term chlorine supply agreement, which is the subject of a pricing dispute. The dispute is pending in the United States District Court for the Southern District of Texas, and we currently anticipate trial will be scheduled for fourth quarter 2020. Any additional losses related to this contract dispute are not currently estimable because of unresolved questions of fact and law but, if resolved unfavorably to Olin, they could have a material adverse effect on our financial position, cash flows or results of operations.

Olin, K.A. Steel Chemicals (a wholly owned subsidiary of Olin) and other caustic soda producers were named as defendants in six purported class action civil lawsuits filed March 22, 25 and 26, 2019 and April 12, 2019 in the U.S. District Court for the Western District of New York on behalf of the respective named plaintiffs and a putative class comprised of all persons and entities who purchased caustic soda in the U.S. directly from one or more of the defendants, their parents, predecessors, subsidiaries or affiliates at any time between October 1, 2015 and the present.  Olin, K.A. Steel Chemicals and other caustic soda producers were also named as defendants in two purported class action civil lawsuits filed July 25 and 29, 2019 in the U.S. District Court for the Western District of New York on behalf of the respective named plaintiffs and a putative class comprised of all persons and entities who purchased caustic soda in the U.S. indirectly from distributors at any time between October 1, 2015 and the present.  The other defendants named in the lawsuits are Occidental Petroleum Corporation, Occidental Chemical Corporation d/b/a OxyChem, Westlake Chemical Corporation, Shin-Etsu Chemical Co., Ltd., Shintech Incorporated, Formosa Plastics Corporation, and Formosa Plastics Corporation, U.S.A. The lawsuits allege the defendants conspired to fix, raise, maintain and stabilize the price of caustic soda, restrict domestic (U.S.) supply of caustic soda and allocate caustic soda customers. Plaintiffs seek an unspecified amount of damages and injunctive relief. We believe we have meritorious legal positions and will continue to represent our interests vigorously in this matter. Any losses related to this matter are not currently estimable because of unresolved questions of fact and law, but if resolved unfavorably to Olin, could have a material adverse effect on our financial position, cash flows or results of operations.

We, and our subsidiaries, are defendants in various other legal actions (including proceedings based on alleged exposures to asbestos) incidental to our past and current business activities. As of June 30, 2020, December 31, 2019 and June 30, 2019, our condensed balance sheets included accrued liabilities for these other legal actions of $12.4 million, $12.4 million and $14.0 million, respectively. These liabilities do not include costs associated with legal representation. Based on our analysis, and considering the inherent uncertainties associated with litigation, we do not believe that it is reasonably possible that these other legal actions will materially adversely affect our financial position, cash flows or results of operations. In connection with the October 5, 2015 acquisition of Dow’s U.S. Chlor Alkali and Vinyl, Global Chlorinated Organics and Global Epoxy businesses, the prior owner of the businesses retained liabilities related to litigation to the extent arising prior to October 5, 2015.

During the ordinary course of our business, contingencies arise resulting from an existing condition, situation or set of circumstances involving an uncertainty as to the realization of a possible gain contingency. In certain instances such as environmental projects, we are responsible for managing the cleanup and remediation of an environmental site. There exists the possibility of recovering a portion of these costs from other parties. We account for gain contingencies in accordance with the provisions of ASC 450 “Contingencies” and, therefore, do not record gain contingencies and recognize income until it is earned and realizable.

NOTE 11. SHAREHOLDERS’ EQUITY

On April 26, 2018, our board of directors authorized a share repurchase program for the purchase of shares of common stock at an aggregate price of up to $500.0 million.  This program will terminate upon the purchase of $500.0 million of our common stock.

There were no shares repurchased for the six months ended June 30, 2020. For the six months ended June 30, 2019, 1.2 million shares were repurchased and retired at a cost of $26.7 million. As of June 30, 2020, we had repurchased a total of $195.9 million of our common stock, representing 10.1 million shares, and $304.1 million of common stock remained authorized to be repurchased.

We issued less than 0.1 million and 0.1 million shares representing stock options exercised for the six months ended June 30, 2020 and 2019, respectively, with a total value of $0.7 million and $1.5 million, respectively.

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The following table represents the activity included in accumulated other comprehensive loss:

	Foreign Currency Translation Adjustment (net of taxes)			Unrealized (Losses) Gains on Derivative Contracts (net of taxes)			Pension and Other Postretirement Benefits (net of taxes)			Accumulated Other Comprehensive Loss
	($ in millions)
Balance at January 1, 2019	$	0.7		$	1.8		$	(653.5	)	$	(651.0	)
Unrealized (losses) gains:
First quarter	(8.3		)	(6.6		)	—			(14.9		)
Second quarter	3.3			(22.2		)	—			(18.9		)
Reclassification adjustments of losses into income:
First quarter	—			2.2			7.4			9.6
Second quarter	—			6.3			7.1			13.4
Tax benefit (provision):
First quarter	—			1.1			(1.7		)	(0.6		)
Second quarter	—			3.8			(1.8		)	2.0
Net change	(5.0		)	(15.4		)	11.0			(9.4		)
Balance at June 30, 2019	$	(4.3	)	$	(13.6	)	$	(642.5	)	$	(660.4	)
Balance at January 1, 2020	$	(8.4	)	$	(13.6	)	$	(781.4	)	$	(803.4	)
Unrealized (losses) gains:
First quarter	(9.0		)	(35.1		)	—			(44.1		)
Second quarter	8.2			29.9			—			38.1
Reclassification adjustments of losses into income:
First quarter	—			11.6			11.9			23.5
Second quarter	—			9.3			11.6			20.9
Tax benefit (provision):
First quarter	—			5.6			(2.7		)	2.9
Second quarter	—			(9.2		)	(2.6		)	(11.8		)
Net change	(0.8		)	12.1			18.2			29.5
Balance at June 30, 2020	$	(9.2	)	$	(1.5	)	$	(763.2	)	$	(773.9	)

Net (loss) income, interest expense and cost of goods sold included reclassification adjustments for realized gains and losses on derivative contracts from accumulated other comprehensive loss.

Net (loss) income and non-operating pension income included the amortization of prior service costs and actuarial losses from accumulated other comprehensive loss.

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NOTE 12. SEGMENT INFORMATION

We define segment results as income (loss) before interest expense, interest income, other operating income (expense), non-operating pension income, other income and income taxes. We have three operating segments: Chlor Alkali Products and Vinyls, Epoxy and Winchester. The three operating segments reflect the organization used by our management for purposes of allocating resources and assessing performance. Chlorine used in our Epoxy segment is transferred at cost from the Chlor Alkali Products and Vinyls segment. Sales and profits are recognized in the Chlor Alkali Products and Vinyls segment for all caustic soda generated and sold by Olin. Sales are attributed to geographic areas based on customer location.

	Three Months Ended June 30,						Six Months Ended June 30,
	2020			2019			2020			2019
Sales:	($ in millions)
Chlor Alkali Products and Vinyls	$	651.2		$	909.2		$	1,411.1		$	1,781.4
Epoxy	397.4			518.8			874.6			1,042.8
Winchester	192.6			164.9			380.6			322.1
Total sales	$	1,241.2		$	1,592.9		$	2,666.3		$	3,146.3
Income (loss) before taxes:
Chlor Alkali Products and Vinyls	$	(57.0	)	$	70.7		$	(91.3	)	$	191.1
Epoxy	(13.0		)	3.9			(1.3		)	14.4
Winchester	16.0			10.1			26.5			19.2
Corporate/other:
Environmental expense	(2.8		)	(17.2		)	(5.4		)	(19.0		)
Other corporate and unallocated costs	(37.4		)	(35.3		)	(68.5		)	(74.4		)
Restructuring charges	(1.7		)	(3.8		)	(3.4		)	(7.8		)
Other operating income	0.1			0.1			0.1			0.2
Interest expense	(69.4		)	(57.9		)	(132.5		)	(115.3		)
Interest income	0.2			0.3			0.3			0.5
Non-operating pension income	4.9			4.2			9.5			8.1
Other income	—			—			—			11.2
Income (loss) before taxes	$	(160.1	)	$	(24.9	)	$	(266.0	)	$	28.2

Environmental expense for both the three and six months ended June 30, 2019 included $4.8 million of an environmental insurance-related settlement gain.

For the six months ended June 30, 2019, other income included a gain of $11.2 million on the sale of our equity interest in a non-consolidated affiliate.

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	Three Months Ended June 30,				Six Months Ended June 30,
	2020		2019		2020		2019
Sales by geography:	($ in millions)
Chlor Alkali Products and Vinyls
United States	$	450.3	$	601.0	$	984.2	$	1,205.0
Europe	26.8		39.1		57.0		77.7
Other foreign	174.1		269.1		369.9		498.7
Total Chlor Alkali Products and Vinyls	651.2		909.2		1,411.1		1,781.4
Epoxy
United States	122.5		175.4		281.3		339.5
Europe	140.4		222.6		334.8		458.0
Other foreign	134.5		120.8		258.5		245.3
Total Epoxy	397.4		518.8		874.6		1,042.8
Winchester
United States	178.6		146.8		352.7		288.1
Europe	2.3		2.3		4.8		5.1
Other foreign	11.7		15.8		23.1		28.9
Total Winchester	192.6		164.9		380.6		322.1
Total
United States	751.4		923.2		1,618.2		1,832.6
Europe	169.5		264.0		396.6		540.8
Other foreign	320.3		405.7		651.5		772.9
Total sales	$	1,241.2	$	1,592.9	$	2,666.3	$	3,146.3

	Three Months Ended June 30,				Six Months Ended June 30,
	2020		2019		2020		2019
Sales by product line:	($ in millions)
Chlor Alkali Products and Vinyls
Caustic soda	$	320.2	$	461.0	$	680.4	$	923.1
Chlorine, chlorine-derivatives and other co-products	331.0		448.2		730.7		858.3
Total Chlor Alkali Products and Vinyls	651.2		909.2		1,411.1		1,781.4
Epoxy
Aromatics and allylics	167.0		234.8		384.4		478.6
Epoxy resins	230.4		284.0		490.2		564.2
Total Epoxy	397.4		518.8		874.6		1,042.8
Winchester
Commercial	135.6		103.6		262.7		210.0
Military and law enforcement	57.0		61.3		117.9		112.1
Total Winchester	192.6		164.9		380.6		322.1
Total sales	$	1,241.2	$	1,592.9	$	2,666.3	$	3,146.3

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NOTE 13. STOCK-BASED COMPENSATION

Stock-based compensation granted includes stock options, performance stock awards, restricted stock awards and deferred directors’ compensation. Stock-based compensation expense (benefit) was as follows:

	Three Months Ended June 30,						Six Months Ended June 30,
	2020			2019			2020			2019
	($ in millions)
Stock-based compensation	$	4.3		$	(1.3	)	$	6.3		$	4.3
Mark-to-market adjustments	(0.1		)	(0.9		)	(3.1		)	0.4
Total expense (benefit)	$	4.2		$	(2.2	)	$	3.2		$	4.7

The fair value of each stock option granted, which typically vests ratably over three years, but not less than one year, was estimated on the date of grant, using the Black-Scholes option-pricing model with the following weighted-average assumptions:

Grant date	2020			2019
Dividend yield	4.60		%	3.05		%
Risk-free interest rate	1.44		%	2.51		%
Expected volatility	36		%	34		%
Expected life (years)	6.0			6.0
Weighted-average grant fair value (per option)	$	3.64		$	6.76
Weighted-average exercise price	$	17.33		$	26.26
Shares granted	2,665,700			1,575,900

Dividend yield was based on our current dividend yield as of the option grant date. Risk-free interest rate was based on zero coupon U.S. Treasury securities rates for the expected life of the options. Expected volatility was based on our historical stock price movements, as we believe that historical experience is the best available indicator of the expected volatility. Expected life of the option grant was based on historical exercise and cancellation patterns, as we believe that historical experience is the best estimate of future exercise patterns.

NOTE 14. DEBT

On May 19, 2020, Olin issued $500.0 million aggregate principal amount of 9.50% senior notes due June 1, 2025 (2025 Notes). The 2025 Notes were issued at 99.5% of par value, the discount from which is included within long-term debt in the condensed balance sheets. Interest on the 2025 Notes is payable semi-annually beginning on December 1, 2020. Proceeds from the 2025 Notes were used for general corporate purposes.

On May 8, 2020, we entered into a $1,300.0 million senior secured credit facility (Senior Secured Credit Facility) that amended our existing five-year, $2,000.0 million senior credit facility. The Senior Secured Credit Facility includes a senior secured delayed-draw term loan facility with aggregate commitments of $500.0 million (Delayed Draw Term Loan Facility) and a senior secured revolving credit facility with aggregate commitments in an amount equal to $800.0 million (Senior Revolving Credit Facility). The maturity date for the Senior Secured Credit Facility is July 16, 2024. The amendment modified the financial covenants of the Senior Secured Credit Facility to be less restrictive and expanded the permitted use of proceeds of the Delayed Draw Term Loan Facility to include general corporate purposes.

The amendment also requires that the obligations under the Senior Secured Credit Facility be guaranteed by certain of our domestic subsidiaries, which are also guarantors of Olin’s outstanding notes, with the exception of the $200.0 million senior notes due 2022. The obligations under the Senior Secured Credit Facility are also secured by liens on substantially all of Olin’s and the subsidiary guarantors’ personal property (Collateral), other than certain principal properties and capital stock of subsidiaries, and subject to certain other exceptions. The amendment provides that substantially all guarantees under the Senior Secured Credit Facility and liens on the Collateral will be released automatically when our net leverage ratio is below 3.50 to 1.00 for two consecutive fiscal quarters.

The Delayed Draw Term Loan Facility is available on a delayed basis in up to three draws to be made on or prior to November 29, 2020. The Delayed Draw Term Loan Facility includes principal amortization amounts payable beginning the quarter ending after the facility is fully drawn at a rate of 5.0% per annum for the first two years, increasing to 7.5% per annum

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for the following year and to 10.0% per annum for the last two years. The Senior Revolving Credit Facility includes a $100.0 million letter of credit subfacility. At June 30, 2020, we had $799.6 million available under our $800.0 million Senior Revolving Credit Facility because we had issued $0.4 million of letters of credit. 

For both the three and six months ended June 30, 2020, we recognized interest expense of $1.6 million for the write-off of unamortized deferred debt issuance costs related to the reduction of commitments under the Senior Secured Credit Facility. For the six months ended June 30, 2020, we paid debt issuance costs of $9.6 million for the issuance of the 2025 Notes and amendments to our Senior Secured Credit Facility and Receivables Financing Agreement.

Under the Senior Secured Credit Facility, we may select various floating rate borrowing options. The actual interest rate paid on borrowings under the Senior Secured Credit Facility is based on a pricing grid which is dependent upon the net leverage ratio as calculated under the terms of the applicable facility for the prior fiscal quarter.  The Senior Secured Credit Facility includes various customary restrictive covenants, including restrictions related to the ratio of secured debt to earnings before interest expense, taxes, depreciation and amortization (secured leverage ratio) and the ratio of earnings before interest expense, taxes, depreciation and amortization to interest expense (coverage ratio).  The calculation of secured debt in our secured leverage ratio excludes borrowings under the Receivables Financing Agreement, up to a maximum of $250.0 million. As of June 30, 2020, the only secured borrowings included in the secured leverage ratio were $153.0 million for our Go Zone and Recovery Zone bonds. Compliance with these covenants is determined quarterly. We were in compliance with all covenants and restrictions under all our outstanding credit agreements as of June 30, 2020, and no event of default had occurred that would permit the lenders under our outstanding credit agreements to accelerate the debt if not cured. In the future, our ability to generate sufficient operating cash flows, among other factors, will determine the amounts available to be borrowed under these facilities. As a result of our restrictive covenant related to the secured leverage ratio, the maximum additional borrowings available to us could be limited in the future.  The limitation, if an amendment or waiver from our lenders is not obtained, could restrict our ability to borrow the maximum amounts available under the Senior Revolving Credit Facility and the Receivables Financing Agreement.  As of June 30, 2020, there were no covenants or other restrictions that limited our ability to borrow.

NOTE 15. CONTRIBUTING EMPLOYEE OWNERSHIP PLAN

The Contributing Employee Ownership Plan (CEOP) is a defined contribution plan available to essentially all domestic employees.  We provide a contribution to an individual retirement contribution account maintained with the CEOP equal to an amount of between 5.0% and 7.5% of the employee’s eligible compensation.  The defined contribution plan expense for the three months ended June 30, 2020 and 2019 was $6.8 million and $6.9 million, respectively, and for the six months ended June 30, 2020 and 2019 was $15.0 million and $16.3 million, respectively.

Company matching contributions are invested in the same investment allocation as the employee’s contribution.  Our matching contributions for eligible employees for the three months ended June 30, 2020 and 2019 were $0.7 million and $4.0 million, respectively, and for the six months ended June 30, 2020 and 2019 were $1.5 million and $7.9 million, respectively. Effective January 1, 2020, we suspended the match on all salaried and non-bargaining hourly employees’ contributions, and moved to a discretionary contribution model with contributions contingent upon company-wide financial performance.

NOTE 16. PENSION PLANS AND RETIREMENT BENEFITS

We sponsor domestic and foreign defined benefit pension plans for eligible employees and retirees. Most of our domestic employees participate in defined contribution plans.  However, a portion of our bargaining hourly employees continue to participate in our domestic qualified defined benefit pension plans under a flat-benefit formula. Our funding policy for the qualified defined benefit pension plans is consistent with the requirements of federal laws and regulations. Our foreign subsidiaries maintain pension and other benefit plans, which are consistent with local statutory practices.

Our domestic qualified defined benefit pension plan provides that if, within three years following a change of control of Olin, any corporate action is taken or filing made in contemplation of, among other things, a plan termination or merger or other transfer of assets or liabilities of the plan, and such termination, merger, or transfer thereafter takes place, plan benefits would automatically be increased for affected participants (and retired participants) to absorb any plan surplus (subject to applicable collective bargaining requirements).

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We also provide certain postretirement healthcare (medical) and life insurance benefits for eligible active and retired domestic employees. The healthcare plans are contributory with participants’ contributions adjusted annually based on medical rates of inflation and plan experience.

	Pension Benefits						Other Postretirement Benefits
	Three Months Ended June 30,						Three Months Ended June 30,
	2020			2019			2020		2019
Components of Net Periodic Benefit (Income) Cost	($ in millions)
Service cost	$	2.7		$	2.7		$	0.4	$	0.3
Interest cost	18.8			23.7			0.3		0.5
Expected return on plans’ assets	(35.6		)	(35.5		)	—		—
Recognized actuarial loss	11.1			6.6			0.5		0.5
Net periodic benefit (income) cost	$	(3.0	)	$	(2.5	)	$	1.2	$	1.3

	Pension Benefits						Other Postretirement Benefits
	Six Months Ended June 30,						Six Months Ended June 30,
	2020			2019			2020		2019
Components of Net Periodic Benefit (Income) Cost	($ in millions)
Service cost	$	5.7		$	5.8		$	0.7	$	0.6
Interest cost	37.5			47.3			0.7		0.9
Expected return on plans’ assets	(71.2		)	(70.8		)	—		—
Recognized actuarial loss	22.3			13.4			1.2		1.1
Net periodic benefit (income) cost	$	(5.7	)	$	(4.3	)	$	2.6	$	2.6

We made cash contributions to our international qualified defined benefit pension plans of $1.2 million and $0.7 million for the six months ended June 30, 2020 and 2019, respectively.

NOTE 17. INCOME TAXES

The effective tax rate for the three months ended June 30, 2020 of 25.0% was higher than the 21% U.S. federal statutory rate primarily due to state taxes, foreign income taxes and favorable permanent salt depletion deductions, partially offset by foreign income inclusions and a net increase in the valuation allowance related to losses in foreign jurisdictions. The effective tax rate for the three months ended June 30, 2019 included a benefit associated with stock-based compensation, an expense associated with prior year tax positions and an expense from a change in tax contingencies. These factors resulted in a net $0.6 million tax expense. After giving consideration to these items, the effective tax rate for the three months ended June 30, 2019 of 22.1% was higher than the 21% U.S. federal statutory rate, primarily due to state and foreign income taxes, foreign income inclusions and a net increase in the valuation allowance related to losses in foreign jurisdictions, partially offset by favorable permanent salt depletion deductions.

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The effective tax rate for the six months ended June 30, 2020 included an expense associated with stock-based compensation, an expense associated with prior year tax positions and an expense from a change in tax contingencies. These factors resulted in a net $1.0 million tax expense. After giving consideration to these items, the effective tax rate for the six months ended June 30, 2020 of 25.2% was higher than the 21% U.S. federal statutory rate primarily due to state taxes, foreign income taxes and favorable permanent salt depletion deductions, partially offset by foreign income inclusions and a net increase in the valuation allowance related to losses in foreign jurisdictions. The effective tax rate for the six months ended June 30, 2019 included a benefit associated with stock-based compensation, a benefit associated with prior year tax positions, a benefit from a net decrease in the valuation allowance related to state deferred tax assets and an expense from a change in tax contingencies. These factors resulted in a net $0.3 million tax benefit. After giving consideration to these items, the effective tax rate for the six months ended June 30, 2019 of 24.1% was higher than the 21% U.S. federal statutory rate, primarily due to state and foreign income taxes, foreign income inclusions and a net increase in the valuation allowance related to losses in foreign jurisdictions, partially offset by favorable permanent salt depletion deductions.   

As of June 30, 2020, we had $22.0 million of gross unrecognized tax benefits, which would have a net $21.8 million impact on the effective tax rate, if recognized. As of June 30, 2019, we had $35.0 million of gross unrecognized tax benefits, of which $34.1 million would have impacted the effective tax rate, if recognized. The amount of unrecognized tax benefits was as follows:

	June 30,
	2020			2019
	($ in millions)
Balance at beginning of year	$	22.8		$	33.8
Decreases for prior year tax positions	(1.8		)	—
Increases for current year tax positions	1.0			1.2
Balance at end of period	$	22.0		$	35.0

As of June 30, 2020, we believe it is reasonably possible that our total amount of unrecognized tax benefits will decrease by approximately $3.8 million over the next twelve months. The anticipated reduction primarily relates to settlements with taxing authorities and the expiration of federal, state and foreign statutes of limitation.

We operate globally and file income tax returns in numerous jurisdictions. Our tax returns are subject to examination by various federal, state and local tax authorities. Our 2016 U.S. federal income tax return is currently under examination by the Internal Revenue Service. Additionally, examinations are ongoing in various states and foreign jurisdictions. We believe we have adequately provided for all tax positions; however, amounts asserted by taxing authorities could be greater than our accrued position. For our primary tax jurisdictions, the tax years that remain subject to examination are as follows:

	Tax Years
U.S. federal income tax	2016 - 2019
U.S. state income tax	2006 - 2019
Canadian federal income tax	2012 - 2019
Brazil	2014 - 2019
Germany	2015 - 2019
China	2014 - 2019
The Netherlands	2014 - 2019

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NOTE 18. DERIVATIVE FINANCIAL INSTRUMENTS

We are exposed to market risk in the normal course of our business operations due to our purchases of certain commodities, our ongoing investing and financing activities and our operations that use foreign currencies. The risk of loss can be assessed from the perspective of adverse changes in fair values, cash flows and future earnings. We have established policies and procedures governing our management of market risks and the use of financial instruments to manage exposure to such risks. ASC 815 “Derivatives and Hedging” (ASC 815) requires an entity to recognize all derivatives as either assets or liabilities in the condensed balance sheets and measure those instruments at fair value. In accordance with ASC 815, we designate derivative contracts as cash flow hedges of forecasted purchases of commodities and forecasted interest payments related to variable-rate borrowings and designate certain interest rate swaps as fair value hedges of fixed-rate borrowings. We do not enter into any derivative instruments for trading or speculative purposes.

Energy costs, including electricity and natural gas, and certain raw materials used in our production processes are subject to price volatility. Depending on market conditions, we may enter into futures contracts, forward contracts, commodity swaps and put and call option contracts in order to reduce the impact of commodity price fluctuations. The majority of our commodity derivatives expire within one year.

We actively manage currency exposures that are associated with net monetary asset positions, currency purchases and sales commitments denominated in foreign currencies and foreign currency denominated assets and liabilities created in the normal course of business. We enter into forward sales and purchase contracts to manage currency risk to offset our net exposures, by currency, related to the foreign currency denominated monetary assets and liabilities of our operations. At June 30, 2020, we had outstanding forward contracts to buy foreign currency with a notional value of $176.6 million and to sell foreign currency with a notional value of $111.7 million. All of the currency derivatives expire within one year and are for U.S. dollar (USD) equivalents. The counterparties to the forward contracts are large financial institutions; however, the risk of loss to us in the event of nonperformance by a counterparty could be significant to our financial position or results of operations. At December 31, 2019, we had outstanding forward contracts to buy foreign currency with a notional value of $140.6 million and to sell foreign currency with a notional value of $99.2 million. At June 30, 2019, we had outstanding forward contracts to buy foreign currency with a notional value of $130.8 million and to sell foreign currency with a notional value of $120.5 million.

Cash Flow Hedges

For derivative instruments that are designated and qualify as a cash flow hedge, the change in fair value of the derivative is recognized as a component of other comprehensive income (loss) until the hedged item is recognized in earnings.

We had the following notional amounts of outstanding commodity contracts that were entered into to hedge forecasted purchases:

	June 30, 2020		December 31, 2019		June 30, 2019
	($ in millions)
Natural gas	$	59.3	$	62.9	$	67.1
Ethane	48.2		51.5		53.4
Metals	117.6		60.2		65.6
Total notional	$	225.1	$	174.6	$	186.1

As of June 30, 2020, the counterparties to these commodity contracts were Wells Fargo Bank, N.A., Citibank, N.A., JPMorgan Chase Bank, National Association and Bank of America Corporation, all of which are major financial institutions.

We use cash flow hedges for certain raw material and energy costs such as copper, zinc, lead, ethane, electricity and natural gas to provide a measure of stability in managing our exposure to price fluctuations associated with forecasted purchases of raw materials and energy used in our manufacturing process. At June 30, 2020, we had open derivative contract positions through 2027. If all open futures contracts had been settled on June 30, 2020, we would have recognized a pretax loss of $1.9 million.

If commodity prices were to remain at June 30, 2020 levels, approximately $3.1 million of deferred losses, net of tax, would be reclassified into earnings during the next twelve months. The actual effect on earnings will be dependent on actual commodity prices when the forecasted transactions occur.

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We use interest rate swaps as a means of minimizing cash flow fluctuations that may arise from volatility in interest rates of our variable-rate borrowings. In April 2016, we entered into three tranches of forward starting interest rate swaps whereby we agreed to pay fixed rates to the counterparties who, in turn, pay us floating rates on $1,100.0 million, $900.0 million, and $400.0 million of our underlying floating-rate debt obligations. Each tranche’s term length was for twelve months beginning on December 31, 2016, 2017 and 2018, respectively. We designated the swaps as cash flow hedges of the risk of changes in interest payments associated with our variable-rate borrowings. In July 2019, we terminated the remaining interest rate swap. For the three and six months ended June 30, 2019, $1.2 million and $2.5 million, respectively, of income was recorded to interest expense on the accompanying condensed statements of operations related to these swap agreements.

Fair Value Hedges

We use interest rate swaps as a means of managing interest expense and floating interest rate exposure to optimal levels. For derivative instruments that are designated and qualify as a fair value hedge, the gain or loss on the derivative as well as the offsetting loss or gain on the hedged item attributable to the hedged risk are recognized in current earnings. We include the gain or loss on the hedged items (fixed-rate borrowings) in the same line item, interest expense, as the offsetting loss or gain on the related interest rate swaps. As of June 30, 2019, the total notional amounts of our interest rate swaps designated as fair value hedges was $500.0 million.

In April 2016, we entered into interest rate swaps on $250.0 million of our underlying fixed-rate debt obligations, whereby we agreed to pay variable rates to the counterparties who, in turn, pay us fixed rates.  In October 2016, we entered into interest rate swaps on an additional $250.0 million of our underlying fixed-rate debt obligations, whereby we agreed to pay variable rates to the counterparties who, in turn, pay us fixed rates.  We designated the April 2016 and October 2016 interest rate swap agreements as fair value hedges of the risk of changes in the value of fixed-rate debt due to changes in interest rates for a portion of our fixed-rate borrowings. In August 2019, we terminated the April 2016 and October 2016 interest rate swaps. For the three and six months ended June 30, 2019, $1.0 million and $1.7 million, respectively, of expense was recorded to interest expense on the accompanying condensed statements of operations related to these swap agreements.

Financial Statement Impacts

We present our derivative assets and liabilities in our condensed balance sheets on a net basis whenever we have a legally enforceable master netting agreement with the counterparty to our derivative contracts. We use these agreements to manage and substantially reduce our potential counterparty credit risk.

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The following table summarizes the location and fair value of the derivative instruments on our condensed balance sheets. The table disaggregates our net derivative assets and liabilities into gross components on a contract-by-contract basis before giving effect to master netting arrangements:

	June 30, 2020			December 31, 2019			June 30, 2019
	($ in millions)
Asset derivatives:
Other current assets
Derivatives designated as hedging instruments:
Interest rate contracts - gains	$	—		$	—		$	1.7
Commodity contracts - gains	5.1			1.8			0.5
Commodity contracts - losses	(2.8		)	(0.5		)	(0.3		)
Derivatives not designated as hedging instruments:
Foreign exchange contracts - gains	5.3			1.1			0.4
Foreign exchange contracts - losses	(2.9		)	(0.5		)	(0.3		)
Total other current assets	4.7			1.9			2.0
Other assets
Derivatives designated as hedging instruments:
Commodity contracts - gains	3.0			0.8			0.9
Commodity contracts - losses	(0.7		)	(0.1		)	(0.4		)
Total other assets	2.3			0.7			0.5
Total asset derivatives(1)	$	7.0		$	2.6		$	2.5
Liability derivatives:
Accrued liabilities
Derivatives designated as hedging instruments:
Commodity contracts - losses	$	8.8		$	18.0		$	18.8
Commodity contracts - gains	(2.4		)	(0.2		)	(0.5		)
Derivatives not designated as hedging instruments:
Foreign exchange contracts - losses	1.3			1.4			0.9
Foreign exchange contracts - gains	(0.1		)	(0.2		)	(0.2		)
Total accrued liabilities	7.6			19.0			19.0
Other liabilities
Derivatives designated as hedging instruments:
Interest rate contracts - losses	—			—			9.0
Commodity contracts - losses	0.2			1.8			1.7
Commodity contracts - gains	(0.1		)	—			—
Total other liabilities	0.1			1.8			10.7
Total liability derivatives(1)	$	7.7		$	20.8		$	29.7

(1) Does not include the impact of cash collateral received from or provided to counterparties.

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The following table summarizes the effects of derivative instruments on our condensed statements of operations:

		Amount of Gain (Loss)
		Three Months Ended June 30,						Six Months Ended June 30,
	Location of Gain (Loss)	2020			2019			2020			2019
Derivatives – Cash Flow Hedges		($ in millions)
Recognized in other comprehensive loss:
Commodity contracts	———	$	29.9		$	(21.5	)	$	(5.2	)	$	(27.7	)
Interest rate contracts	———	—			(0.7		)	—			(1.1		)
		$	29.9		$	(22.2	)	$	(5.2	)	$	(28.8	)
Reclassified from accumulated other comprehensive loss into income:
Interest rate contracts	Interest expense	$	—		$	1.2		$	—		$	2.5
Commodity contracts	Cost of goods sold	(9.3		)	(7.5		)	(20.9		)	(11.0		)
		$	(9.3	)	$	(6.3	)	$	(20.9	)	$	(8.5	)
Derivatives – Fair Value Hedges
Interest rate contracts	Interest expense	$	—		$	(1.0	)	$	—		$	(1.7	)
Derivatives Not Designated as Hedging Instruments
Foreign exchange contracts	Selling and administration	$	0.6		$	(0.6	)	$	7.1		$	(3.0	)

Credit Risk and Collateral

By using derivative instruments, we are exposed to credit and market risk. If a counterparty fails to fulfill its performance obligations under a derivative contract, our credit risk will equal the fair value gain in a derivative. Generally, when the fair value of a derivative contract is positive, this indicates that the counterparty owes us, thus creating a repayment risk for us. When the fair value of a derivative contract is negative, we owe the counterparty and, therefore, assume no repayment risk. We minimize the credit (or repayment) risk in derivative instruments by entering into transactions with high-quality counterparties. We monitor our positions and the credit ratings of our counterparties, and we do not anticipate non-performance by the counterparties.

Based on the agreements with our various counterparties, cash collateral is required to be provided when the net fair value of the derivatives, with the counterparty, exceeds a specific threshold. If the threshold is exceeded, cash is either provided by the counterparty to us if the value of the derivatives is our asset, or cash is provided by us to the counterparty if the value of the derivatives is our liability. As of June 30, 2020, December 31, 2019 and June 30, 2019, this threshold was not exceeded. In all instances where we are party to a master netting agreement, we offset the receivable or payable recognized upon payment of cash collateral against the fair value amounts recognized for derivative instruments that have also been offset under such master netting agreements.

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NOTE 19. FAIR VALUE MEASUREMENTS

Fair value is defined as the price at which an asset could be exchanged in a current transaction between knowledgeable, willing parties or the amount that would be paid to transfer a liability to a new obligor, not the amount that would be paid to settle the liability with the creditor. Where available, fair value is based on observable market prices or parameters or derived from such prices or parameters. Where observable prices or inputs are not available, valuation models are applied. These valuation techniques involve some level of management estimation and judgment, the degree of which is dependent on the price transparency for the instruments or market and the instruments’ complexity.

Assets and liabilities recorded at fair value in the condensed balance sheets are categorized based upon the level of judgment associated with the inputs used to measure their fair value. Hierarchical levels, defined by ASC 820 “Fair Value Measurements and Disclosures” (ASC 820) are directly related to the amount of subjectivity associated with the inputs to fair valuation of these assets and liabilities, and are as follows:

Level 1 — Inputs were unadjusted, quoted prices in active markets for identical assets or liabilities at the measurement date.

Level 2 — Inputs (other than quoted prices included in Level 1) were either directly or indirectly observable for the asset or liability through correlation with market data at the measurement date and for the duration of the instrument’s anticipated life.

Level 3 — Inputs reflected management’s best estimate of what market participants would use in pricing the asset or liability at the measurement date. Consideration was given to the risk inherent in the valuation technique and the risk inherent in the inputs to the model.

We are required to separately disclose assets and liabilities measured at fair value on a recurring basis, from those measured at fair value on a nonrecurring basis. Nonfinancial assets measured at fair value on a nonrecurring basis are intangible assets and goodwill, which are reviewed for impairment annually in the fourth quarter and/or when circumstances or other events indicate that impairment may have occurred.

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Determining which hierarchical level an asset or liability falls within requires significant judgment. We evaluate our hierarchy disclosures each quarter. The following table summarizes the assets and liabilities measured at fair value in the condensed balance sheets:

	Fair Value Measurements
Balance at June 30, 2020	Level 1		Level 2		Level 3		Total
Assets	($ in millions)
Commodity contracts	$	—	$	4.6	$	—	$	4.6
Foreign exchange contracts	—		2.4		—		2.4
Total assets	$	—	$	7.0	$	—	$	7.0
Liabilities
Commodity contracts	$	—	$	6.5	$	—	$	6.5
Foreign exchange contracts	—		1.2		—		1.2
Total liabilities	$	—	$	7.7	$	—	$	7.7
Balance at December 31, 2019
Assets
Commodity contracts	$	—	$	2.0	$	—	$	2.0
Foreign exchange contracts	—		0.6		—		0.6
Total assets	$	—	$	2.6	$	—	$	2.6
Liabilities
Commodity contracts	$	—	$	19.6	$	—	$	19.6
Foreign exchange contracts	—		1.2		—		1.2
Total liabilities	$	—	$	20.8	$	—	$	20.8
Balance at June 30, 2019
Assets
Interest rate swaps	$	—	$	1.7	$	—	$	1.7
Commodity contracts	—		0.7		—		0.7
Foreign exchange contracts	—		0.1		—		0.1
Total assets	$	—	$	2.5	$	—	$	2.5
Liabilities
Interest rate swaps	$	—	$	9.0	$	—	$	9.0
Commodity contracts	—		20.0		—		20.0
Foreign exchange contracts	—		0.7		—		0.7
Total liabilities	$	—	$	29.7	$	—	$	29.7

Interest Rate Swaps

Interest rate swap financial instruments were valued using the “income approach” valuation technique. This method used valuation techniques to convert future amounts to a single present amount. The measurement was based on the value indicated by current market expectations about those future amounts. We use interest rate swaps as a means of managing interest expense and floating interest rate exposure to optimal levels.

Commodity Contracts

Commodity contract financial instruments were valued primarily based on prices and other relevant information observable in market transactions involving identical or comparable assets or liabilities including both forward and spot prices for commodities. We use commodity derivative contracts for certain raw materials and energy costs such as copper, zinc, lead, ethane, electricity and natural gas to provide a measure of stability in managing our exposure to price fluctuations.

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Foreign Currency Contracts

Foreign currency contract financial instruments were valued primarily based on relevant information observable in market transactions involving identical or comparable assets or liabilities including both forward and spot prices for currencies. We enter into forward sales and purchase contracts to manage currency risk resulting from purchase and sale commitments denominated in foreign currencies.

Financial Instruments

The carrying values of cash and cash equivalents, accounts receivable and accounts payable approximated fair values due to the short-term maturities of these instruments. The fair value of our long-term debt was determined based on current market rates for debt of similar risk and maturities. The following table summarizes the fair value measurements of debt and the actual debt recorded on our condensed balance sheets:

	Fair Value Measurements								Amount recorded on balance sheets
	Level 1		Level 2		Level 3		Total
	($ in millions)
Balance at June 30, 2020	$	—	$	3,901.7	$	153.0	$	4,054.7	$	4,075.7
Balance at December 31, 2019	—		3,417.5		153.0		3,570.5		3,340.8
Balance at June 30, 2019	—		3,262.6		153.0		3,415.6		3,233.7

Nonrecurring Fair Value Measurements

In addition to assets and liabilities that are recorded at fair value on a recurring basis, we record assets and liabilities at fair value on a nonrecurring basis as required by ASC 820. There were no assets measured at fair value on a nonrecurring basis as of June 30, 2020, December 31, 2019 and June 30, 2019.

NOTE 20. SUPPLEMENTAL GUARANTOR FINANCIAL INFORMATION

In October 2015, Blue Cube Spinco LLC (the Issuer) issued $720.0 million aggregate principal amount of 9.75% senior notes due October 15, 2023 (Blue Cube 2023 Notes) and $500.0 million aggregate principal amount of 10.00% senior notes due October 15, 2025 (Blue Cube 2025 Notes and, together with the Blue Cube 2023 Notes, the Blue Cube Notes). During 2016, the Blue Cube Notes were registered under the Securities Act of 1933, as amended. The Issuer was formed on March 13, 2015 as a wholly owned subsidiary of Dow and upon closing of the Acquisition became a 100% owned subsidiary of Olin (the Parent Guarantor). The Blue Cube Notes are fully and unconditionally guaranteed by the Parent Guarantor.

The following condensed consolidating financial information presents the condensed consolidating balance sheets as of June 30, 2020, December 31, 2019 and June 30, 2019, the related condensed consolidating statements of operations and comprehensive income (loss) for each of the three and six months ended June 30, 2020 and 2019 and the related condensed consolidating statements of cash flows for the six months ended June 30, 2020 and 2019 of (a) the Parent Guarantor, (b) the Issuer, (c) the non-guarantor subsidiaries, (d) elimination entries necessary to consolidate the Parent Guarantor with the Issuer and the non-guarantor subsidiaries and (e) Olin on a consolidated basis. Investments in consolidated subsidiaries are presented under the equity method of accounting.

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CONDENSED CONSOLIDATING BALANCE SHEETS
June 30, 2020
(In millions)
(Unaudited)
	Parent Guarantor			Issuer		Subsidiary Non-Guarantor			Eliminations			Total
Assets
Current assets:
Cash and cash equivalents	$	56.9		$	—	$	181.0		$	—		$	237.9
Receivables, net	51.1			—		649.1			—			700.2
Intercompany receivables	—			—		2,587.6			(2,587.6		)	—
Income taxes receivable	10.9			—		8.3			(1.6		)	17.6
Inventories, net	131.4			—		487.7			—			619.1
Other current assets	259.8			—		1.0			(218.8		)	42.0
Total current assets	510.1			—		3,914.7			(2,808.0		)	1,616.8
Property, plant and equipment, net	705.5			—		2,529.4			—			3,234.9
Operating lease assets, net	44.2			—		327.6			—			371.8
Investment in subsidiaries	6,942.1			4,262.9		—			(11,205.0		)	—
Deferred income taxes	58.2			—		38.2			(58.1		)	38.3
Other assets	23.6			—		1,156.1			—			1,179.7
Long-term receivables—affiliates	73.4			560.2		—			(633.6		)	—
Intangible assets, net	0.2			—		416.7			—			416.9
Goodwill	—			966.3		1,153.4			—			2,119.7
Total assets	$	8,357.3		$	5,789.4	$	9,536.1		$	(14,704.7	)	$	8,978.1
Liabilities and Shareholders’ Equity
Current liabilities:
Current installments of long-term debt	$	1.8		$	—	$	—		$	—		$	1.8
Accounts payable	—			—		526.3			(5.5		)	520.8
Intercompany payables	2,587.6			—		—			(2,587.6		)	—
Income taxes payable	—			—		9.3			(1.6		)	7.7
Current operating lease liabilities	8.4			—		68.9			—			77.3
Accrued liabilities	188.8			—		345.4			(215.5		)	318.7
Total current liabilities	2,786.6			—		949.9			(2,810.2		)	926.3
Long-term debt	2,623.9			1,209.7		240.3			—			4,073.9
Operating lease liabilities	37.0			—		262.2			—			299.2
Accrued pension liability	463.2			—		304.8			—			768.0
Deferred income taxes	—			6.6		466.0			(58.1		)	414.5
Long-term payables—affiliates	—			—		633.6			(633.6		)	—
Other liabilities	257.7			5.6		44.0			—			307.3
Total liabilities	6,168.4			1,221.9		2,900.8			(3,501.9		)	6,789.2
Commitments and contingencies
Shareholders’ equity:
Common stock	157.9			—		14.6			(14.6		)	157.9
Additional paid-in capital	2,127.0			4,125.7		4,808.2			(8,933.9		)	2,127.0
Accumulated other comprehensive loss	(773.9		)	—		(7.5		)	7.5			(773.9		)
Retained earnings	677.9			441.8		1,820.0			(2,261.8		)	677.9
Total shareholders’ equity	2,188.9			4,567.5		6,635.3			(11,202.8		)	2,188.9
Total liabilities and shareholders’ equity	$	8,357.3		$	5,789.4	$	9,536.1		$	(14,704.7	)	$	8,978.1

31

CONDENSED CONSOLIDATING BALANCE SHEETS
December 31, 2019
(In millions)
(Unaudited)
	Parent Guarantor			Issuer		Subsidiary Non-Guarantor			Eliminations			Total
Assets
Current assets:
Cash and cash equivalents	$	11.6		$	—	$	209.3		$	—		$	220.9
Receivables, net	78.3			—		686.8			(4.7		)	760.4
Intercompany receivables	—			—		2,815.5			(2,815.5		)	—
Income taxes receivable	1.6			—		12.3			—			13.9
Inventories, net	157.1			—		538.6			—			695.7
Other current assets	231.4			—		0.2			(208.5		)	23.1
Total current assets	480.0			—		4,262.7			(3,028.7		)	1,714.0
Property, plant and equipment, net	699.0			—		2,624.8			—			3,323.8
Operating lease assets, net	47.4			—		330.4			—			377.8
Investment in subsidiaries	7,048.2			4,353.5		—			(11,401.7		)	—
Deferred income taxes	1.7			—		34.7			(1.1		)	35.3
Other assets	20.9			—		1,148.2			—			1,169.1
Long-term receivables—affiliates	73.4			605.8		—			(679.2		)	—
Intangible assets, net	0.3			—		447.8			—			448.1
Goodwill	—			966.3		1,153.4			—			2,119.7
Total assets	$	8,370.9		$	5,925.6	$	10,002.0		$	(15,110.7	)	$	9,187.8
Liabilities and Shareholders’ Equity
Current liabilities:
Current installments of long-term debt	$	2.1		$	—	$	—		$	—		$	2.1
Accounts payable	—			—		660.6			(8.7		)	651.9
Intercompany payables	2,815.5			—		—			(2,815.5		)	—
Income taxes payable	11.5			—		8.3			—			19.8
Current operating lease liabilities	8.2			—		71.1			—			79.3
Accrued liabilities	183.7			—		350.8			(205.4		)	329.1
Total current liabilities	3,021.0			—		1,090.8			(3,029.6		)	1,082.2
Long-term debt	2,130.0			1,208.7		—			—			3,338.7
Operating lease liabilities	40.4			—		263.0			—			303.4
Accrued pension liability	496.9			—		300.8			—			797.7
Deferred income taxes	—			6.5		449.2			(1.2		)	454.5
Long-term payables—affiliates	—			—		679.2			(679.2		)	—
Other liabilities	265.1			5.6		523.1			—			793.8
Total liabilities	5,953.4			1,220.8		3,306.1			(3,710.0		)	6,770.3
Commitments and contingencies
Shareholders' equity:
Common stock	157.7			—		14.6			(14.6		)	157.7
Additional paid-in capital	2,122.1			4,125.7		4,808.2			(8,933.9		)	2,122.1
Accumulated other comprehensive loss	(803.4		)	—		(6.5		)	6.5			(803.4		)
Retained earnings	941.1			579.1		1,879.6			(2,458.7		)	941.1
Total shareholders’ equity	2,417.5			4,704.8		6,695.9			(11,400.7		)	2,417.5
Total liabilities and shareholders’ equity	$	8,370.9		$	5,925.6	$	10,002.0		$	(15,110.7	)	$	9,187.8

32

CONDENSED CONSOLIDATING BALANCE SHEETS
June 30, 2019
(In millions)
(Unaudited)
	Parent Guarantor			Issuer		Subsidiary Non-Guarantor			Eliminations			Total
Assets
Current assets:
Cash and cash equivalents	$	3.7		$	—	$	123.2		$	—		$	126.9
Receivables, net	105.2			—		743.0			—			848.2
Intercompany receivables	—			—		2,804.3			(2,804.3		)	—
Income taxes receivable	16.2			—		7.2			—			23.4
Inventories, net	179.8			—		519.1			—			698.9
Other current assets	225.9			—		0.8			(197.9		)	28.8
Total current assets	530.8			—		4,197.6			(3,002.2		)	1,726.2
Property, plant and equipment, net	687.3			—		2,723.2			—			3,410.5
Operating lease assets, net	48.5			—		247.3			—			295.8
Investment in subsidiaries	7,028.6			4,330.9		—			(11,359.5		)	—
Deferred income taxes	3.9			—		29.0			(4.8		)	28.1
Other assets	14.3			—		1,160.2			—			1,174.5
Long-term receivables—affiliates	—			1,141.7		—			(1,141.7		)	—
Intangible assets, net	0.3			—		480.3			—			480.6
Goodwill	—			966.3		1,153.3			—			2,119.6
Total assets	$	8,313.7		$	6,438.9	$	9,990.9		$	(15,508.2	)	$	9,235.3
Liabilities and Shareholders’ Equity
Current liabilities:
Current installments of long-term debt	$	1.1		$	—	$	—		$	—		$	1.1
Accounts payable	15.9			—		658.6			(5.3		)	669.2
Intercompany payables	2,804.3			—		—			(2,804.3		)	—
Income taxes payable	—			—		9.5			—			9.5
Current operating lease liabilities	8.2			—		63.2			—			71.4
Accrued liabilities	176.9			—		317.1			(195.1		)	298.9
Total current liabilities	3,006.4			—		1,048.4			(3,004.7		)	1,050.1
Long-term debt	1,385.7			1,696.9		150.0			—			3,232.6
Operating lease liabilities	41.3			—		188.0			—			229.3
Accrued pension liability	414.6			—		239.0			—			653.6
Deferred income taxes	—			4.9		506.3			(4.8		)	506.4
Long-term payables—affiliates	419.6			—		722.1			(1,141.7		)	—
Other liabilities	275.3			5.5		511.7			—			792.5
Total liabilities	5,542.9			1,707.3		3,365.5			(4,151.2		)	6,464.5
Commitments and contingencies
Shareholders' equity:
Common stock	164.3			—		14.6			(14.6		)	164.3
Additional paid-in capital	2,229.2			4,125.7		4,808.2			(8,933.9		)	2,229.2
Accumulated other comprehensive loss	(660.4		)	—		(10.0		)	10.0			(660.4		)
Retained earnings	1,037.7			605.9		1,812.6			(2,418.5		)	1,037.7
Total shareholders’ equity	2,770.8			4,731.6		6,625.4			(11,357.0		)	2,770.8
Total liabilities and shareholders’ equity	$	8,313.7		$	6,438.9	$	9,990.9		$	(15,508.2	)	$	9,235.3

33

CONDENSED CONSOLIDATING STATEMENTS OF OPERATIONS
Three Months Ended June 30, 2020
(In millions)
(Unaudited)
	Parent Guarantor			Issuer			Subsidiary Non-Guarantor			Eliminations			Total
Sales	$	346.9		$	—		$	1,023.8		$	(129.5	)	$	1,241.2
Operating expenses:
Cost of goods sold	319.5			—			1,045.7			(129.5		)	1,235.7
Selling and administration	69.0			—			30.7			—			99.7
Restructuring charges	—			—			1.7			—			1.7
Other operating income	0.1			—			—			—			0.1
Operating loss	(41.5		)	—			(54.3		)	—			(95.8		)
Equity loss in subsidiaries	(65.6		)	(59.5		)	—			125.1			—
Interest expense	39.3			30.6			0.6			(1.1		)	69.4
Interest income	1.3			—			—			(1.1		)	0.2
Non-operating pension income (expense)	6.6			—			(1.7		)	—			4.9
Loss before taxes	(138.5		)	(90.1		)	(56.6		)	125.1			(160.1		)
Income tax benefit	(18.4		)	(7.2		)	(14.4		)	—			(40.0		)
Net loss	$	(120.1	)	$	(82.9	)	$	(42.2	)	$	125.1		$	(120.1	)

CONDENSED CONSOLIDATING STATEMENTS OF OPERATIONS
Six Months Ended June 30, 2020
(In millions)
(Unaudited)
	Parent Guarantor			Issuer			Subsidiary Non-Guarantor			Eliminations			Total
Sales	$	700.2		$	—		$	2,225.6		$	(259.5	)	$	2,666.3
Operating expenses:
Cost of goods sold	653.1			—			2,216.3			(259.5		)	2,609.9
Selling and administration	108.9			—			87.5			—			196.4
Restructuring charges	—			—			3.4			—			3.4
Other operating income	0.1			—			—			—			0.1
Operating loss	(61.7		)	—			(81.6		)	—			(143.3		)
Equity loss in subsidiaries	(114.1		)	(90.6		)	—			204.7			—
Interest expense	71.7			61.2			3.7			(4.1		)	132.5
Interest income	3.4			—			1.0			(4.1		)	0.3
Non-operating pension income (expense)	13.1			—			(3.6		)	—			9.5
Loss before taxes	(231.0		)	(151.8		)	(87.9		)	204.7			(266.0		)
Income tax benefit	(30.9		)	(14.5		)	(20.5		)	—			(65.9		)
Net loss	$	(200.1	)	$	(137.3	)	$	(67.4	)	$	204.7		$	(200.1	)

34

CONDENSED CONSOLIDATING STATEMENTS OF OPERATIONS
Three Months Ended June 30, 2019
(In millions)
(Unaudited)
	Parent Guarantor			Issuer			Subsidiary Non-Guarantor			Eliminations			Total
Sales	$	324.0		$	—		$	1,397.3		$	(128.4	)	$	1,592.9
Operating expenses:
Cost of goods sold	309.8			—			1,282.3			(128.4		)	1,463.7
Selling and administration	47.8			—			49.2			—			97.0
Restructuring charges	—			—			3.8			—			3.8
Other operating (expense) income	(2.3		)	—			2.4			—			0.1
Operating (loss) income	(35.9		)	—			64.4			—			28.5
Equity income (loss) in subsidiaries	10.9			(8.6		)	—			(2.3		)	—
Interest expense	18.3			35.7			6.5			(2.6		)	57.9
Interest income	2.0			—			0.9			(2.6		)	0.3
Non-operating pension income (expense)	5.7			—			(1.5		)	—			4.2
Income (loss) before taxes	(35.6		)	(44.3		)	57.3			(2.3		)	(24.9		)
Income tax (benefit) provision	(15.6		)	(8.7		)	19.4			—			(4.9		)
Net (loss) income	$	(20.0	)	$	(35.6	)	$	37.9		$	(2.3	)	$	(20.0	)

CONDENSED CONSOLIDATING STATEMENTS OF OPERATIONS
Six Months Ended June 30, 2019
(In millions)
(Unaudited)
	Parent Guarantor			Issuer			Subsidiary Non-Guarantor			Eliminations			Total
Sales	$	656.8		$	—		$	2,725.0		$	(235.5	)	$	3,146.3
Operating expenses:
Cost of goods sold	613.9			—			2,432.6			(235.5		)	2,811.0
Selling and administration	99.6			—			104.4			—			204.0
Restructuring charges	1.4			—			6.4			—			7.8
Other operating (expense) income	(4.4		)	—			4.6			—			0.2
Operating (loss) income	(62.5		)	—			186.2			—			123.7
Equity income in subsidiaries	73.5			44.0			—			(117.5		)	—
Interest expense	35.7			71.8			11.7			(3.9		)	115.3
Interest income	2.6			—			1.8			(3.9		)	0.5
Non-operating pension income (expense)	11.1			—			(3.0		)	—			8.1
Other income	11.2			—			—			—			11.2
Income (loss) before taxes	0.2			(27.8		)	173.3			(117.5		)	28.2
Income tax (benefit) provision	(21.5		)	(17.4		)	45.4			—			6.5
Net income (loss)	$	21.7		$	(10.4	)	$	127.9		$	(117.5	)	$	21.7

35

CONDENSED CONSOLIDATING STATEMENTS OF COMPREHENSIVE INCOME (LOSS)
Three Months Ended June 30, 2020
(In millions)
(Unaudited)
	Parent Guarantor			Issuer			Subsidiary Non-Guarantor			Eliminations		Total
Net loss	$	(120.1	)	$	(82.9	)	$	(42.2	)	$	125.1	$	(120.1	)
Other comprehensive income, net of tax:
Foreign currency translation adjustments, net	—			—			8.2			—		8.2
Unrealized gains on derivative contracts, net	30.0			—			—			—		30.0
Amortization of prior service costs and actuarial losses, net	7.6			—			1.4			—		9.0
Total other comprehensive income, net of tax	37.6			—			9.6			—		47.2
Comprehensive loss	$	(82.5	)	$	(82.9	)	$	(32.6	)	$	125.1	$	(72.9	)

CONDENSED CONSOLIDATING STATEMENTS OF COMPREHENSIVE INCOME (LOSS)
Six Months Ended June 30, 2020
(In millions)
(Unaudited)
	Parent Guarantor			Issuer			Subsidiary Non-Guarantor			Eliminations		Total
Net loss	$	(200.1	)	$	(137.3	)	$	(67.4	)	$	204.7	$	(200.1	)
Other comprehensive income, net of tax:
Foreign currency translation adjustments, net	—			—			(0.8		)	—		(0.8		)
Unrealized gains on derivative contracts, net	12.1			—			—			—		12.1
Amortization of prior service costs and actuarial losses, net	15.5			—			2.7			—		18.2
Total other comprehensive income, net of tax	27.6			—			1.9			—		29.5
Comprehensive loss	$	(172.5	)	$	(137.3	)	$	(65.5	)	$	204.7	$	(170.6	)

36

CONDENSED CONSOLIDATING STATEMENTS OF COMPREHENSIVE INCOME (LOSS)
Three Months Ended June 30, 2019
(In millions)
(Unaudited)
	Parent Guarantor			Issuer			Subsidiary Non-Guarantor		Eliminations			Total
Net (loss) income	$	(20.0	)	$	(35.6	)	$	37.9	$	(2.3	)	$	(20.0	)
Other comprehensive (loss) income, net of tax:
Foreign currency translation adjustments, net	—			—			3.3		—			3.3
Unrealized losses on derivative contracts, net	(12.1		)	—			—		—			(12.1		)
Amortization of prior service costs and actuarial losses, net	4.8			—			0.5		—			5.3
Total other comprehensive (loss) income, net of tax	(7.3		)	—			3.8		—			(3.5		)
Comprehensive (loss) income	$	(27.3	)	$	(35.6	)	$	41.7	$	(2.3	)	$	(23.5	)

CONDENSED CONSOLIDATING STATEMENTS OF COMPREHENSIVE INCOME (LOSS)
Six Months Ended June 30, 2019
(In millions)
(Unaudited)
	Parent Guarantor			Issuer			Subsidiary Non-Guarantor			Eliminations			Total
Net income (loss)	$	21.7		$	(10.4	)	$	127.9		$	(117.5	)	$	21.7
Other comprehensive loss, net of tax:
Foreign currency translation adjustments, net	—			—			(5.0		)	—			(5.0		)
Unrealized losses on derivative contracts, net	(15.4		)	—			—			—			(15.4		)
Amortization of prior service costs and actuarial losses, net	9.9			—			1.1			—			11.0
Total other comprehensive loss, net of tax	(5.5		)	—			(3.9		)	—			(9.4		)
Comprehensive income (loss)	$	16.2		$	(10.4	)	$	124.0		$	(117.5	)	$	12.3

37

CONDENSED CONSOLIDATING STATEMENTS OF CASH FLOWS
Six Months Ended June 30, 2020
(In millions)
(Unaudited)
	Parent Guarantor			Issuer		Subsidiary Non-Guarantor			Eliminations		Total
Net operating activities	$	219.1		$	—	$	(163.7	)	$	—	$	55.4
Investing Activities
Capital expenditures	(61.5		)	—		(105.0		)	—		(166.5		)
Payments under ethylene long-term supply contracts	—			—		(461.0		)	—		(461.0		)
Payments under other long-term supply contracts	—			—		(75.8		)	—		(75.8		)
Net investing activities	(61.5		)	—		(641.8		)	—		(703.3		)
Financing Activities
Long-term debt:
Borrowings	672.5			—		490.7			—		1,163.2
Repayments	(175.8		)	—		(250.0		)	—		(425.8		)
Stock options exercised	0.5			—		—			—		0.5
Dividends paid	(63.1		)	—		—			—		(63.1		)
Debt issuance costs	(9.6		)	—		—			—		(9.6		)
Intercompany financing activities	(536.8		)	—		536.8			—		—
Net financing activities	(112.3		)	—		777.5			—		665.2
Effect of exchange rate changes on cash and cash equivalents	—			—		(0.3		)	—		(0.3		)
Net increase (decrease) in cash and cash equivalents	45.3			—		(28.3		)	—		17.0
Cash and cash equivalents, beginning of year	11.6			—		209.3			—		220.9
Cash and cash equivalents, end of period	$	56.9		$	—	$	181.0		$	—	$	237.9

38

CONDENSED CONSOLIDATING STATEMENTS OF CASH FLOWS
Six Months Ended June 30, 2019
(In millions)
(Unaudited)
	Parent Guarantor			Issuer			Subsidiary Non-Guarantor			Eliminations		Total
Net operating activities	$	120.1		$	—		$	116.0		$	—	$	236.1
Investing Activities
Capital expenditures	(86.9		)	—			(104.4		)	—		(191.3		)
Proceeds from disposition of non-consolidated affiliate	20.0			—			—			—		20.0
Net investing activities	(66.9		)	—			(104.4		)	—		(171.3		)
Financing Activities
Long-term debt:
Borrowings	—			—			25.0			—		25.0
Repayments	(0.6		)	(50.0		)	—			—		(50.6		)
Common stock repurchased and retired	(26.7		)	—			—			—		(26.7		)
Stock options exercised	1.5			—			—			—		1.5
Dividends paid	(65.7		)	—			—			—		(65.7		)
Intercompany financing activities	(50.0		)	50.0			—			—		—
Net financing activities	(141.5		)	—			25.0			—		(116.5		)
Effect of exchange rate changes on cash and cash equivalents	—			—			(0.2		)	—		(0.2		)
Net (decrease) increase in cash and cash equivalents	(88.3		)	—			36.4			—		(51.9		)
Cash and cash equivalents, beginning of year	92.0			—			86.8			—		178.8
Cash and cash equivalents, end of period	$	3.7		$	—		$	123.2		$	—	$	126.9

39

Item 2.  Management’s Discussion and Analysis of Financial Condition and Results of Operations.

Business Background

We are a leading vertically-integrated global manufacturer and distributor of chemical products and a leading U.S. manufacturer of ammunition. Our operations are concentrated in three business segments: Chlor Alkali Products and Vinyls, Epoxy and Winchester. All of our business segments are capital intensive manufacturing businesses. Chlor Alkali Products and Vinyls operating rates are closely tied to the general economy. Each segment has a commodity element to it, and therefore, our ability to influence pricing is quite limited on the portion of the segment’s business that is strictly commodity.

Our Chlor Alkali Products and Vinyls segment is a commodity business where all supplier products are similar and price is the major supplier selection criterion. We have little or no ability to influence prices in the large, global commodity markets. Our Chlor Alkali Products and Vinyls segment produces some of the most widely used chemicals in the world that can be upgraded into a wide variety of downstream chemical products used in many end-markets. Cyclical price swings, driven by changes in supply/demand, can be abrupt and significant and, given capacity in our Chlor Alkali Products and Vinyls segment, can lead to very significant changes in our overall profitability.

The Epoxy segment consumes products manufactured by the Chlor Alkali Products and Vinyls segment. The Epoxy segment’s upstream and midstream products are predominately commodity markets. We have little or no ability to influence prices in these large, global commodity markets. While competitive differentiation exists through downstream customization and product development opportunities, pricing is extremely competitive with a broad range of competitors across the globe.

Winchester also has a commodity element to its business, but a majority of Winchester ammunition is sold as a branded consumer product where there are opportunities to differentiate certain offerings through innovative new product development and enhanced product performance. While competitive pricing versus other branded ammunition products is important, it is not the only factor in product selection.

Executive Summary

COVID-19

The 2019 Novel Coronavirus (COVID-19) global pandemic, and the various governmental, business and consumer responses to this pandemic, significantly impacted our results during the first half of 2020. We have taken measures to protect the health and safety of our employees, work with our customers and suppliers to minimize potential disruptions and support our communities during this global pandemic. Our operations are among businesses that have been considered “essential” by government and public health authorities. We are following all federal, state and local health department guidelines and the costs associated with these safety procedures were not material.  We continue to safely maintain plant operations and focus on business continuity. All Olin manufacturing facilities worldwide continue to operate, with the exception of those undergoing planned maintenance turnarounds.

The spread of the pandemic and the associated response has caused significant disruptions in the U.S. and global economies, resulting in the disruption of the supply and demand fundamentals of our Chemicals businesses. The various governmental, business and consumer responses to the pandemic negatively impacted the demand for several of the products produced by our Chlor Alkali Products and Vinyls and Epoxy businesses resulting in lower volumes and pricing.  We are monitoring the changing business environment, volatility and heightened degree of uncertainty resulting from the response to COVID-19. At the current time, we are unable to fully determine its future impact on our business. We continue to work with our customers, employees, suppliers and communities to address the impacts of COVID-19 and we continue to assess possible implications to our business, supply chain and customers, and to take actions in an effort to mitigate adverse consequences.

We have initiated several on-going actions that we believe will partially mitigate the impact of economic decline on our financial performance, but also enhance our position, financially and structurally, to take advantage of the eventual global economic recovery. Several of these actions and our liquidity resources are summarized below:

• Our cash and cash equivalents as of June 30, 2020 were $237.9 million. We have no required bond repayments until August 2022.

• In May 2020, we entered into a $1,300.0 million senior secured credit facility (Senior Secured Credit Facility) that amended our existing $2,000.0 million senior credit facility, which provides additional flexibility under our restrictive compliance covenants. The facility includes a senior secured revolving credit facility (Senior Revolving Credit

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Facility) with aggregate commitments in an amount equal to $800.0 million, of which we have $799.6 million available to us at June 30, 2020, and a senior secured delayed-draw term loan facility (Delayed Draw Term Loan Facility) with aggregate commitments of $500.0 million, which can be used for general corporate purposes.

• In May 2020, we issued $500.0 million 9.50% senior notes due 2025 (2025 Notes). Proceeds from the 2025 Notes provided additional liquidity and were used for general corporate purposes.

• During the first half of 2020, we amended our Receivables Financing Agreement to expand the borrowing capacity to $250.0 million and had borrowed $240.7 million as of June 30, 2020. We also have the ability to increase our accounts receivable factoring arrangements, which ultimately can accelerate the timing of cash receipts and enhance our cash position. The Receivables Financing Agreement and accounts receivable factoring arrangements do not impact our Senior Secured Credit Facility debt ratio covenants.

• We are executing a strategy to improve our working capital and manage our balance sheet to maximize our financial flexibility. During 2020, Olin expects to reduce working capital by approximately $150 million.

• We are forecasting capital spending to be $250 million to $275 million in 2020, which is approximately $125 million lower than prior year levels.

• On March 27, 2020, the Coronavirus Aid, Relief, and Economic Security Act (CARES Act) became law. The CARES Act provides for deferred payment of the employer portion of Social Security taxes through the end of 2020, with 50% of the deferred amount due December 31, 2021 and the remaining 50% due December 31, 2022. This is expected to provide us with approximately $20 million of additional liquidity during 2020.

• We believe that we have access to both the high-yield debt and equity markets at this time.

We still believe there is a high degree of economic uncertainty in the global markets in which we participate and we believe the steps we have taken and will continue to take to enhance our capital structure and liquidity have strengthened our ability to operate through the current conditions.

2020 Overview

Net loss was $120.1 million and $20.0 million for the three months ended June 30, 2020 and 2019, respectively. Net loss was $200.1 million for the six months ended June 30, 2020 compared to net income of $21.7 million for the comparable prior year period. The negative results as compared to the prior year were primarily due to lower Chlor Alkali Products and Vinyls and Epoxy segments results, primarily due to lower pricing and volumes. Partially offsetting the lower chemical segment results were higher Winchester segment results.

Chlor Alkali Products and Vinyls reported segment loss of $57.0 million and $91.3 million for the three and six months ended June 30, 2020, respectively. Chlor Alkali Products and Vinyls segment results were lower than in the comparable prior year periods primarily due to lower pricing, primarily caustic soda and ethylene dichloride (EDC), and lower volumes, partially offset by lower costs, including raw materials and operating costs. Chlor Alkali Products and Vinyls segment results included depreciation and amortization expense of $108.5 million and $118.8 million for the three months ended June 30, 2020 and 2019, respectively, and $227.0 million and $238.6 million for the six months ended June 30, 2020 and 2019, respectively.

During 2019, North America caustic soda price contract indices decreased $90 per ton and caustic soda export price indices decreased approximately $160 per metric ton. In the first quarter of 2020, North America caustic soda price contract indices decreased an additional $5 per ton and caustic soda export price indices increased approximately $15 per metric ton. During the second quarter of 2020, North America caustic soda price contract indices increased $70 per ton and caustic soda export price indices increased an additional $115 per metric ton.

Epoxy reported segment loss of $13.0 million and $1.3 million for the three and six months ended June 30, 2020, respectively. Epoxy segment results were lower than in the comparable prior year periods primarily due to lower product prices and volumes, partially offset by lower costs, primarily raw materials. Epoxy segment results included depreciation and amortization expense of $21.6 million and $25.8 million for the three months ended June 30, 2020 and 2019, respectively, and $43.1 million and $52.3 million for the six months ended June 30, 2020 and 2019, respectively.

Winchester reported segment income of $16.0 million and $26.5 million for the three and six months ended June 30, 2020, respectively. Winchester segment results were higher than in the comparable prior year periods primarily due to higher commercial ammunition volumes. These improvements were partially offset by $3.8 million and $6.6 million for the three and six months ended June 30, 2020, respectively, of transition costs related to the U.S. Army Lake City ammunition facility contract. Winchester segment results included depreciation and amortization expense of $4.7 million and $5.1 million for the three months ended June 30, 2020 and 2019, respectively, and $9.7 million and $10.0 million for the six months ended June 30, 2020 and 2019, respectively.

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Consolidated Results of Operations

	Three Months Ended June 30,						Six Months Ended June 30,
	2020			2019			2020			2019
	($ in millions, except per share data)
Sales	$	1,241.2		$	1,592.9		$	2,666.3		$	3,146.3
Cost of goods sold	1,235.7			1,463.7			2,609.9			2,811.0
Gross margin	5.5			129.2			56.4			335.3
Selling and administration	99.7			97.0			196.4			204.0
Restructuring charges	1.7			3.8			3.4			7.8
Other operating income	0.1			0.1			0.1			0.2
Operating (loss) income	(95.8		)	28.5			(143.3		)	123.7
Interest expense	69.4			57.9			132.5			115.3
Interest income	0.2			0.3			0.3			0.5
Non-operating pension income	4.9			4.2			9.5			8.1
Other income	—			—			—			11.2
Income (loss) before taxes	(160.1		)	(24.9		)	(266.0		)	28.2
Income tax (benefit) provision	(40.0		)	(4.9		)	(65.9		)	6.5
Net (loss) income	$	(120.1	)	$	(20.0	)	$	(200.1	)	$	21.7
Net (loss) income per common share:
Basic	$	(0.76	)	$	(0.12	)	$	(1.27	)	$	0.13
Diluted	$	(0.76	)	$	(0.12	)	$	(1.27	)	$	0.13

Three Months Ended June 30, 2020 Compared to Three Months Ended June 30, 2019

Sales for the three months ended June 30, 2020 were $1,241.2 million compared to $1,592.9 million in the same period last year, a decrease of $351.7 million, or 22%. Chlor Alkali Products and Vinyls sales decreased by $258.0 million, primarily due to lower caustic soda and EDC pricing and lower volumes. Epoxy sales decreased by $121.4 million, primarily due to lower product prices and lower volumes. Winchester sales increased by $27.7 million compared to the prior year, primarily due to increased commercial ammunition volumes.

Gross margin decreased $123.7 million for the three months ended June 30, 2020 compared to the prior year. Chlor Alkali Products and Vinyls gross margin decreased by $128.0 million, primarily due to lower caustic soda and EDC pricing and lower volumes, partially offset by lower costs, including raw materials and operating costs. Epoxy gross margin decreased by $18.5 million, primarily due to lower product prices and volumes, partially offset by lower costs, primarily raw materials. Winchester gross margin increased by $9.3 million, primarily due to higher commercial ammunition volumes. Gross margin was also impacted by lower environmental costs of $14.4 million.  Gross margin as a percentage of sales decreased to 0% in 2020 from 8% in 2019.

Selling and administration expenses for the three months ended June 30, 2020 were $99.7 million, an increase of $2.7 million from the prior year. The increase was primarily due to transition costs relating to the U.S. Army Lake City ammunition facility contract of $3.8 million and higher management incentive compensation expense of $3.8 million, which includes mark-to-market adjustments on stock-based compensation expense. These increases were partially offset by lower salaries and benefits of $2.5 million and lower travel-related expenses of $2.4 million. Selling and administration expenses for the three months ended June 30, 2020 and 2019 included costs associated with the Information Technology Project of $20.4 million and $21.5 million, respectively. Selling and administration expenses as a percentage of sales increased to 8% in 2020 from 6% in 2019.

Restructuring charges for the three months ended June 30, 2020 and 2019 of $1.7 million and $3.8 million, respectively, were primarily associated with the March 2016 closure of 433,000 tons of chlor alkali capacity across three separate locations.

Interest expense increased by $11.5 million for the three months ended June 30, 2020, primarily due to a higher level of debt outstanding and higher interest rates. Interest expense for the three months ended June 30, 2020 included $1.6 million for

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the write-off of unamortized deferred debt issuance costs related to the reduction of commitments under the Senior Secured Credit Facility. Interest expense for the three months ended June 30, 2020 and 2019 was reduced by capitalized interest of $0.8 million and $2.9 million, respectively. Interest expense for the three months ended June 30, 2019 included $4.2 million of accretion expense related to the 2020 ethylene payment discount.

Non-operating pension income includes all components of pension and other postretirement income (costs) other than service costs.

The effective tax rate for the three months ended June 30, 2020 of 25.0% was higher than the 21% U.S. federal statutory rate primarily due to state taxes, foreign income taxes and favorable permanent salt depletion deductions, partially offset by foreign income inclusions and a net increase in the valuation allowance related to losses in foreign jurisdictions. The effective tax rate for the three months ended June 30, 2019 included a benefit associated with stock-based compensation, an expense associated with prior year tax positions and an expense from a change in tax contingencies. These factors resulted in a net $0.6 million tax expense. After giving consideration to these items, the effective tax rate for the three months ended June 30, 2019 of 22.1% was higher than the 21% U.S. federal statutory rate, primarily due to state and foreign income taxes, foreign income inclusions and a net increase in the valuation allowance related to losses in foreign jurisdictions, partially offset by favorable permanent salt depletion deductions.

Six Months Ended June 30, 2020 Compared to Six Months Ended June 30, 2019

Sales for the six months ended June 30, 2020 were $2,666.3 million compared to $3,146.3 million in the same period last year, a decrease of $480.0 million, or 15%. Chlor Alkali Products and Vinyls sales decreased by $370.3 million, primarily due to lower caustic soda and EDC pricing and lower volumes. Epoxy sales decreased by $168.2 million, primarily due to lower product prices and lower volumes. Winchester sales increased by $58.5 million compared to the prior year primarily due to increased commercial ammunition volumes.

Gross margin decreased $278.9 million for the six months ended June 30, 2020 compared to the prior year. Chlor Alkali Products and Vinyls gross margin decreased by $284.8 million, primarily due to lower caustic soda and EDC pricing, partially offset by lower costs, primarily raw materials. Epoxy gross margin decreased by $19.8 million, primarily due to lower product prices and volumes, partially offset by lower raw material costs. Winchester gross margin increased by $13.6 million, primarily due to higher sales volumes. Gross margin was also impacted by lower environmental costs of $13.6 million. Gross margin as a percentage of sales decreased to 2% in 2020 from 11% in 2019.

Selling and administration expenses for the six months ended June 30, 2020 were $196.4 million, a decrease of $7.6 million from the prior year. The decrease was primarily due to lower management incentive compensation expense of $4.9 million, which includes mark-to-market adjustments on stock-based compensation expense, lower salaries and benefits of $4.3 million and lower travel-related expenses of $4.2 million. These decreases were partially offset by transition costs relating to the U.S. Army Lake City ammunition facility contract of $6.6 million. Selling and administration expenses for the six months ended June 30, 2020 and 2019 included costs associated with the Information Technology Project of $35.1 million and $35.6 million, respectively. Selling and administration expenses as a percentage of sales increased to 7% in 2020 from 6% in 2019.

Restructuring charges for the six months ended June 30, 2020 and 2019 of $3.4 million and $7.8 million, respectively, were primarily associated with the March 2016 closure of 433,000 tons of chlor alkali capacity across three separate locations.

Interest expense increased by $17.2 million for the six months ended June 30, 2020, primarily due to a higher level of debt outstanding and higher interest rates. Interest expense for the six months ended June 30, 2020 and 2019 included $4.0 million and $8.2 million, respectively, of accretion expense related to the 2020 ethylene payment discount. Interest expense for the six months ended June 30, 2020 included $1.6 million for the write-off of unamortized deferred debt issuance costs related to the reduction of commitments under the Senior Secured Credit Facility. Interest expense for the six months ended June 30, 2020 and 2019 was reduced by capitalized interest of $4.2 million and $5.7 million, respectively.

Non-operating pension income includes all components of pension and other postretirement income (costs) other than service costs.

Other income for the six months ended June 30, 2019 included a gain of $11.2 million on the sale of our equity interest in a non-consolidated affiliate.

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The effective tax rate for the six months ended June 30, 2020 included an expense associated with stock-based compensation, an expense associated with prior year tax positions and an expense from a change in tax contingencies. These factors resulted in a net $1.0 million tax expense. After giving consideration to these items, the effective tax rate for the six months ended June 30, 2020 of 25.2% was higher than the 21% U.S. federal statutory rate primarily due to state taxes, foreign income taxes and favorable permanent salt depletion deductions, partially offset by foreign income inclusions and a net increase in the valuation allowance related to losses in foreign jurisdictions. The effective tax rate for the six months ended June 30, 2019 included a benefit associated with stock-based compensation, a benefit associated with prior year tax positions, a benefit from a net decrease in the valuation allowance related to state deferred tax assets and an expense from a change in tax contingencies. These factors resulted in a net $0.3 million tax benefit. After giving consideration to these items, the effective tax rate for the six months ended June 30, 2019 of 24.1% was higher than the 21% U.S. federal statutory rate, primarily due to state and foreign income taxes, foreign income inclusions and a net increase in the valuation allowance related to losses in foreign jurisdictions, partially offset by favorable permanent salt depletion deductions.

Segment Results

We define segment results as income (loss) before interest expense, interest income, other operating income (expense), non-operating pension income, other income and income taxes. We have three operating segments: Chlor Alkali Products and Vinyls, Epoxy and Winchester. The three operating segments reflect the organization used by our management for purposes of allocating resources and assessing performance. Chlorine used in our Epoxy segment is transferred at cost from the Chlor Alkali Products and Vinyls segment. Sales and profits are recognized in the Chlor Alkali Products and Vinyls segment for all caustic soda generated and sold by Olin.

	Three Months Ended June 30,						Six Months Ended June 30,
	2020			2019			2020			2019
Sales:	($ in millions)
Chlor Alkali Products and Vinyls	$	651.2		$	909.2		$	1,411.1		$	1,781.4
Epoxy	397.4			518.8			874.6			1,042.8
Winchester	192.6			164.9			380.6			322.1
Total sales	$	1,241.2		$	1,592.9		$	2,666.3		$	3,146.3
Income (loss) before taxes:
Chlor Alkali Products and Vinyls	$	(57.0	)	$	70.7		$	(91.3	)	$	191.1
Epoxy	(13.0		)	3.9			(1.3		)	14.4
Winchester	16.0			10.1			26.5			19.2
Corporate/other:
Environmental expense(1)	(2.8		)	(17.2		)	(5.4		)	(19.0		)
Other corporate and unallocated costs(2)	(37.4		)	(35.3		)	(68.5		)	(74.4		)
Restructuring charges	(1.7		)	(3.8		)	(3.4		)	(7.8		)
Other operating income	0.1			0.1			0.1			0.2
Interest expense(3)	(69.4		)	(57.9		)	(132.5		)	(115.3		)
Interest income	0.2			0.3			0.3			0.5
Non-operating pension income	4.9			4.2			9.5			8.1
Other income(4)	—			—			—			11.2
Income (loss) before taxes	$	(160.1	)	$	(24.9	)	$	(266.0	)	$	28.2

(1) Environmental expense for both the three and six months ended June 30, 2019 included $4.8 million of an environmental insurance-related settlement gain.

(2) In 2017, we began a multi-year implementation of new enterprise resource planning, manufacturing and engineering systems, and related infrastructure (collectively, the Information Technology Project). Other corporate and unallocated costs included costs associated with the implementation of the Information Technology Project for the three months ended June 30, 2020 and 2019 of $20.4 million and $21.5 million, respectively, and for the six months ended June 30, 2020 and 2019 of $35.1 million and $35.6 million, respectively.

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(3) Interest expense included $4.2 million for the three months ended June 30, 2019, and $4.0 million and $8.2 million for the six months ended June 30, 2020 and 2019, respectively, related to the 2020 ethylene payment discount.

(4) Other income for the six months ended June 30, 2019 included a gain of $11.2 million on the sale of our equity interest in a non-consolidated affiliate.

Chlor Alkali Products and Vinyls

Three Months Ended June 30, 2020 Compared to Three Months Ended June 30, 2019

Chlor Alkali Products and Vinyls sales for the three months ended June 30, 2020 were $651.2 million compared to $909.2 million for the same period in 2019, a decrease of $258.0 million, or 28%. The sales decrease was primarily due to lower caustic soda and EDC pricing and lower volumes.

Chlor Alkali Products and Vinyls segment loss was $57.0 million for the three months ended June 30, 2020 compared to segment income of $70.7 million for the same period in 2019, a decrease of $127.7 million, or 181%. The decrease in Chlor Alkali Products and Vinyls segment results was primarily due to lower product prices ($122.5 million), primarily caustic soda and EDC, and lower volumes ($105.8 million). Partially offsetting these decreases were lower raw material costs ($46.8 million) and lower maintenance turnaround and operating costs ($53.8 million). Chlor Alkali Products and Vinyls segment results included depreciation and amortization expense of $108.5 million and $118.8 million for the three months ended June 30, 2020 and 2019, respectively.

Six Months Ended June 30, 2020 Compared to Six Months Ended June 30, 2019

Chlor Alkali Products and Vinyls sales for the six months ended June 30, 2020 were $1,411.1 million compared to $1,781.4 million for the same period in 2019, a decrease of $370.3 million, or 21%. The sales decrease was primarily due to lower caustic soda and EDC pricing and lower volumes.

Chlor Alkali Products and Vinyls segment loss was $91.3 million for the six months ended June 30, 2020 compared to segment income of $191.1 million for the same period in 2019, a decrease of $282.4 million, or 148%. The decrease in Chlor Alkali Products and Vinyls segment results was primarily due to lower product prices ($256.8 million), primarily caustic soda and EDC, and lower volumes ($109.4 million), primarily caustic soda. Partially offsetting these decreases were lower raw material costs ($55.5 million) and lower maintenance turnaround and operating costs ($28.3 million). Chlor Alkali Products and Vinyls segment results included depreciation and amortization expense of $227.0 million and $238.6 million for the six months ended June 30, 2020 and 2019, respectively.

Epoxy

Three Months Ended June 30, 2020 Compared to Three Months Ended June 30, 2019

Epoxy sales for the three months ended June 30, 2020 were $397.4 million compared to $518.8 million for the same period in 2019, a decrease of $121.4 million, or 23%. The sales decrease was primarily due to lower product prices ($82.0 million), decreased volumes ($30.6 million) and an unfavorable effect of foreign currency translation ($8.8 million).

Epoxy segment loss was $13.0 million for the three months ended June 30, 2020 compared to segment income of $3.9 million for the same period in 2019, a decrease of $16.9 million, or 433%. The decrease in segment results was primarily due to lower product prices ($82.0 million) and decreased volumes ($16.3 million), partially offset by lower raw material costs ($57.4 million), primarily benzene and propylene. Epoxy results were also positively impacted by lower maintenance turnaround and operating costs ($24.0 million), including depreciation and amortization expense. A significant percentage of our Euro denominated sales are of products manufactured within Europe.  As a result, the impact of foreign currency translation on revenue is primarily offset by the impact of foreign currency translation on raw materials and manufacturing costs also denominated in Euros.  Epoxy segment results included depreciation and amortization expense of $21.6 million and $25.8 million for the three months ended June 30, 2020 and 2019, respectively.

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Six Months Ended June 30, 2020 Compared to Six Months Ended June 30, 2019

Epoxy sales for the six months ended June 30, 2020 were $874.6 million compared to $1,042.8 million for the same period in 2019, a decrease of $168.2 million, or 16%. The sales decrease was primarily due to lower product prices ($108.0 million), decreased volumes ($42.6 million) and an unfavorable effect of foreign currency translation ($17.6 million).

Epoxy segment loss was $1.3 million for the six months ended June 30, 2020 compared to segment income of $14.4 million for the same period in 2019, a decrease of $15.7 million, or 109%. The decrease in segment results was primarily due to lower product prices ($108.0 million) and decreased volumes ($14.7 million), partially offset by lower raw material costs ($74.6 million), primarily benzene and propylene. The Epoxy segment earnings were also negatively affected by a first quarter force majeure declaration by a European phenol supplier, which reduced epoxy resin and epoxy resin precursor production, and Epoxy manufacturing plant closures and operating reductions in Asia due to COVID-19 ($10.0 million). Epoxy results were also positively impacted by lower operating costs ($42.4 million), including depreciation and amortization expense. A significant percentage of our Euro denominated sales are of products manufactured within Europe.  As a result, the impact of foreign currency translation on revenue is primarily offset by the impact of foreign currency translation on raw materials and manufacturing costs also denominated in Euros.  Epoxy segment results included depreciation and amortization expense of $43.1 million and $52.3 million for the six months ended June 30, 2020 and 2019, respectively.

Winchester

Three Months Ended June 30, 2020 Compared to Three Months Ended June 30, 2019

Winchester sales were $192.6 million for the three months ended June 30, 2020 compared to $164.9 million for the same period in 2019, an increase of $27.7 million, or 17%. The increase was due to higher ammunition sales to commercial customers ($32.0 million), partially offset by lower ammunition sales to military customers and law enforcement agencies ($4.3 million).

Winchester segment income was $16.0 million for the three months ended June 30, 2020 compared to $10.1 million for the same period in 2019, an increase of $5.9 million, or 58%. The increase in segment results was due to increased sales volumes ($7.7 million) and higher product pricing ($2.6 million). These improvements were partially offset by transition costs relating to the U.S. Army Lake City ammunition facility contract ($3.8 million). Winchester segment income included depreciation and amortization expense of $4.7 million and $5.1 million for the three months ended June 30, 2020 and 2019, respectively.

Six Months Ended June 30, 2020 Compared to Six Months Ended June 30, 2019

Winchester sales were $380.6 million for the six months ended June 30, 2020 compared to $322.1 million for the same period in 2019, an increase of $58.5 million, or 18%. The increase was due to higher ammunition sales to commercial customers ($52.7 million) and increased ammunition sales to military customers and law enforcement agencies ($5.8 million).

Winchester segment income was $26.5 million for the six months ended June 30, 2020 compared to $19.2 million for the same period in 2019, an increase of $7.3 million, or 38%. The increase in segment results was due to increased sales volumes ($10.6 million) and higher product pricing ($3.0 million). These improvements were partially offset by transition costs relating to the U.S. Army Lake City ammunition facility contract ($6.6 million). Winchester segment income included depreciation and amortization expense of $9.7 million and $10.0 million for the six months ended June 30, 2020 and 2019, respectively.

Corporate/Other

Three Months Ended June 30, 2020 Compared to Three Months Ended June 30, 2019

For the three months ended June 30, 2020, charges to income for environmental investigatory and remedial activities were $2.8 million compared to $17.2 million for the three months ended June 30, 2019. These charges related primarily to expected future investigatory and remedial activities associated with past manufacturing operations and former waste disposal sites. The three months ended June 30, 2019 includes a $20.0 million increase in costs at a former manufacturing site resulting from revised remediation estimates as a result of agency action in 2019 and a $4.8 million environmental insurance-related settlement gain.

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For the three months ended June 30, 2020, other corporate and unallocated costs were $37.4 million compared to $35.3 million for the three months ended June 30, 2019, an increase of $2.1 million. The increase was primarily due to higher management incentive expense of $4.3 million, which includes mark-to-market adjustments on stock-based compensation expense, partially offset by lower salary and benefit costs of $0.8 million. Other corporate and unallocated costs included costs associated with the implementation of the Information Technology Project for the three months ended June 30, 2020 and 2019 of $20.4 million and $21.5 million, respectively.

Six Months Ended June 30, 2020 Compared to Six Months Ended June 30, 2019

For the six months ended June 30, 2020, charges to income for environmental investigatory and remedial activities were $5.4 million compared to $19.0 million for the six months ended June 30, 2019. These charges related primarily to expected future investigatory and remedial activities associated with past manufacturing operations and former waste disposal sites. The six months ended June 30, 2019 includes a $20.0 million increase in costs at a former manufacturing site resulting from revised remediation estimates as a result of agency action in 2019 and a $4.8 million environmental insurance-related settlement gain.

For the six months ended June 30, 2020, other corporate and unallocated costs were $68.5 million compared to $74.4 million for the six months ended June 30, 2019, a decrease of $5.9 million. The decrease was primarily due to decreased management incentive expense of $3.9 million, which includes mark-to-market adjustments on stock-based compensation expense, and lower salary and benefit costs of $1.6 million. Other corporate and unallocated costs included costs associated with the implementation of the Information Technology Project for the six months ended June 30, 2020 and 2019 of $35.1 million and $35.6 million, respectively.

Outlook

The COVID-19 global pandemic, and the various governmental, business and consumer responses to this pandemic, significantly impacted our results during the first half of 2020. The spread of the pandemic and the associated response has caused significant disruptions in the U.S. and global economies, resulting in the disruption of the supply and demand fundamentals of our Chemicals businesses. We still believe there is a high degree of economic uncertainty in the global markets in which we participate and we believe the steps we have taken and will continue to take to enhance our capital structure and liquidity have strengthened our ability to operate through the current conditions. We continue to work with our customers, employees, suppliers and communities to address the impacts of COVID-19 and we continue to assess possible implications to our business, supply chain and customers; however, we are unable to estimate the full effects of the COVID-19 outbreak on our financial condition, liquidity, results of operations, suppliers, industry, and work force.

The Chlor Alkali Products and Vinyls and Epoxy businesses remain challenged by the current economic conditions. Visibility around future demand continues to be limited and customer order patterns remain volatile. The combination of improved volumes, lower maintenance turnaround costs and higher product pricing are forecast to generate third quarter 2020 results that are higher from the second quarter 2020. In the third quarter, we expect sequential improvement in caustic soda and ethylene dichloride pricing. We also expect the volumes in the third quarter of 2020 to improve from second quarter 2020 levels primarily due to lower maintenance turnaround activity.

We expect our Winchester segment to continue to benefit from stronger commercial ammunition demand during the third quarter of 2020. We expect to benefit from the Lake City U.S. Army Ammunition Plant contract beginning in the fourth quarter. During 2020, we expect to incur $15 million to $20 million of transition costs and approximately $80 million associated with an initial working capital investment for the Lake City Plant contract. The contract is expected to increase Winchester’s annual revenue by $450 million to $550 million and segment earnings by approximately $40 million to $50 million.

Other Corporate and Unallocated costs in 2020 are expected to be comparable to the $156.3 million in 2019. Costs associated with the Information Technology Project in 2020 are also expected to be comparable to 2019. The Information Technology Project will be substantially completed during 2020.

During 2020, we anticipate environmental expenses to be in the $25 million to $30 million range compared to $25.3 million in 2019, excluding the $4.8 million of insurance recoveries. We do not believe that there will be additional recoveries of environmental costs incurred and expensed in prior periods during 2020.

We expect non-operating pension income in 2020 to be approximately $18 million compared to $16.3 million in 2019. Based on our plan assumptions and estimates, we will not be required to make any cash contributions to our domestic qualified

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defined benefit pension plan in 2020. We have several international qualified defined benefit pension plans for which we anticipate cash contributions of less than $5 million in 2020.

In 2020, we currently expect our capital spending to be in the $250 million to $275 million range, including the investment associated with the Information Technology Project of approximately $40 million. We expect 2020 depreciation and amortization expense to be in the $550 million to $575 million range.

We currently believe the 2020 effective tax rate will be in the 25% to 30% range, while we expect cash taxes will be in the range of $(5) million to $5 million. 2020 tax payments primarily relate to earnings in foreign jurisdictions.

Environmental Matters

Environmental provisions charged to income, which are included in costs of goods sold, were as follows:

	Three Months Ended June 30,					Six Months Ended June 30,
	2020		2019			2020		2019
	($ in millions)
Provisions charged to income	$	2.8	$	22.0		$	5.4	$	23.8
Recoveries for costs incurred and expensed	—		(4.8		)	—		(4.8		)
Environmental expense	$	2.8	$	17.2		$	5.4	$	19.0

Provisions charged to income for both the three and six months ended June 30, 2019 include a $20.0 million increase in costs at a former manufacturing site resulting from revised remediation estimates as a result of agency action and $4.8 million of recoveries associated with resolving outstanding third party claims against the proceeds from a 2018 environmental insurance settlement. 

Our liabilities for future environmental expenditures were as follows:

	June 30,
	2020			2019
	($ in millions)
Balance at beginning of year	$	139.0		$	125.6
Charges to income	5.4			23.8
Remedial and investigatory spending	(5.6		)	(5.2		)
Foreign currency translation adjustments	(0.2		)	0.2
Balance at end of period	$	138.6		$	144.4

Environmental investigatory and remediation activities spending was associated with former waste disposal sites and past manufacturing operations. Spending in 2020 for investigatory and remedial efforts, the timing of which is subject to regulatory approvals and other uncertainties, is estimated to be approximately $17 million. Cash outlays for remedial and investigatory activities associated with former waste disposal sites and past manufacturing operations were not charged to income, but instead, were charged to reserves established for such costs identified and expensed to income in prior periods. Associated costs of investigatory and remedial activities are provided for in accordance with generally accepted accounting principles governing probability and the ability to reasonably estimate future costs. Our ability to estimate future costs depends on whether our investigatory and remedial activities are in preliminary or advanced stages. With respect to unasserted claims, we accrue liabilities for costs that, in our experience, we expect to incur to protect our interests against those unasserted claims. Our accrued liabilities for unasserted claims amounted to $8.9 million at June 30, 2020. With respect to asserted claims, we accrue liabilities based on remedial investigation, feasibility study, remedial action and operation, maintenance and monitoring (OM&M) expenses that, in our experience, we expect to incur in connection with the asserted claims. Required site OM&M expenses are estimated and accrued in their entirety for required periods not exceeding 30 years, which reasonably approximates the typical duration of long-term site OM&M. Charges to income for investigatory and remedial efforts were material to our operating results in 2019 and may be material to our operating results in 2020.

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The condensed balance sheets included reserves for future environmental expenditures to investigate and remediate known sites amounting to $138.6 million, $139.0 million and $144.4 million at June 30, 2020, December 31, 2019 and June 30, 2019, respectively, of which $121.6 million, $122.0 million and $127.4 million, respectively, were classified as other noncurrent liabilities. These amounts do not take into account any discounting of future expenditures or any consideration of insurance recoveries or advances in technology. These liabilities are reassessed periodically to determine if environmental circumstances have changed and/or remediation efforts and our estimate of related costs have changed. As a result of these reassessments, future charges to income may be made for additional liabilities.

In connection with the October 5, 2015 acquisition of Dow’s U.S. Chlor Alkali and Vinyl, Global Chlorinated Organics and Global Epoxy businesses, the prior owner of the businesses retained liabilities relating to releases of hazardous materials and violations of environmental law to the extent arising prior to October 5, 2015.

Environmental exposures are difficult to assess for numerous reasons, including the identification of new sites, developments at sites resulting from investigatory studies, advances in technology, changes in environmental laws and regulations and their application, changes in regulatory authorities, the scarcity of reliable data pertaining to identified sites, the difficulty in assessing the involvement and financial capability of other Potentially Responsible Parties (PRPs), our ability to obtain contributions from other parties and the lengthy time periods over which site remediation occurs. It is possible that some of these matters (the outcomes of which are subject to various uncertainties) may be resolved unfavorably to us, which could materially adversely affect our financial position or results of operations.

Legal Matters and Contingencies

Olin and Oxy Vinyls, L.P. (Oxy) have a long-term chlorine supply agreement, which is the subject of a pricing dispute. The dispute is pending in the United States District Court for the Southern District of Texas, and we currently anticipate trial will be scheduled for fourth quarter 2020. Any additional losses related to this contract dispute are not currently estimable because of unresolved questions of fact and law but, if resolved unfavorably to Olin, they could have a material adverse effect on our financial position, cash flows or results of operations.

Olin, K.A. Steel Chemicals (a wholly owned subsidiary of Olin) and other caustic soda producers were named as defendants in six purported class action civil lawsuits filed March 22, 25 and 26, 2019 and April 12, 2019 in the U.S. District Court for the Western District of New York on behalf of the respective named plaintiffs and a putative class comprised of all persons and entities who purchased caustic soda in the U.S. directly from one or more of the defendants, their parents, predecessors, subsidiaries or affiliates at any time between October 1, 2015 and the present.  Olin, K.A. Steel Chemicals and other caustic soda producers were also named as defendants in two purported class action civil lawsuits filed July 25 and 29, 2019 in the U.S. District Court for the Western District of New York on behalf of the respective named plaintiffs and a putative class comprised of all persons and entities who purchased caustic soda in the U.S. indirectly from distributors at any time between October 1, 2015 and the present.  The other defendants named in the lawsuits are Occidental Petroleum Corporation, Occidental Chemical Corporation d/b/a OxyChem, Westlake Chemical Corporation, Shin-Etsu Chemical Co., Ltd., Shintech Incorporated, Formosa Plastics Corporation, and Formosa Plastics Corporation, U.S.A. The lawsuits allege the defendants conspired to fix, raise, maintain and stabilize the price of caustic soda, restrict domestic (U.S.) supply of caustic soda and allocate caustic soda customers. Plaintiffs seek an unspecified amount of damages and injunctive relief. We believe we have meritorious legal positions and will continue to represent our interests vigorously in this matter. Any losses related to this matter are not currently estimable because of unresolved questions of fact and law, but, if resolved unfavorably to Olin, could have a material adverse effect on our financial position, cash flows or results of operations.

We, and our subsidiaries, are defendants in various other legal actions (including proceedings based on alleged exposures to asbestos) incidental to our past and current business activities. As of June 30, 2020, December 31, 2019 and June 30, 2019, our condensed balance sheets included accrued liabilities for these other legal actions of $12.4 million, $12.4 million and $14.0 million, respectively. These liabilities do not include costs associated with legal representation. Based on our analysis, and considering the inherent uncertainties associated with litigation, we do not believe that it is reasonably possible that these other legal actions will materially adversely affect our financial position, cash flows or results of operations. In connection with the October 5, 2015 acquisition of Dow’s U.S. Chlor Alkali and Vinyl, Global Chlorinated Organics and Global Epoxy businesses, the prior owner of the businesses retained liabilities related to litigation to the extent arising prior to October 5, 2015.

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During the ordinary course of our business, contingencies arise resulting from an existing condition, situation or set of circumstances involving an uncertainty as to the realization of a possible gain contingency. In certain instances such as environmental projects, we are responsible for managing the cleanup and remediation of an environmental site. There exists the possibility of recovering a portion of these costs from other parties. We account for gain contingencies in accordance with the provisions of ASC 450 “Contingencies,” and therefore, do not record gain contingencies and recognize income until it is earned and realizable.

Liquidity, Investment Activity and Other Financial Data

Cash Flow Data

	Six Months Ended June 30,
	2020			2019
Provided By (Used For)	($ in millions)
Net operating activities	$	55.4		$	236.1
Capital expenditures	(166.5		)	(191.3		)
Payments under long-term supply contracts	(536.8		)	—
Proceeds from disposition of non-consolidated affiliate	—			20.0
Net investing activities	(703.3		)	(171.3		)
Long-term debt borrowings (repayments), net	737.4			(25.6		)
Common stock repurchased and retired	—			(26.7		)
Debt issuance costs	(9.6		)	—
Net financing activities	665.2			(116.5		)

Operating Activities

For the six months ended June 30, 2020, cash provided by operating activities decreased by $180.7 million from the six months ended June 30, 2019, primarily due to a decrease in operating results. For the six months ended June 30, 2020, working capital decreased $30.8 million compared to an increase of $91.3 million for the six months ended June 30, 2019. Receivables decreased by $64.1 million from December 31, 2019, primarily as a result of lower sales prices and lower volumes during 2020. Inventories decreased by $75.7 million from December 31, 2019, primarily as a result of lower raw material costs and lower Winchester inventory due to improved commercial ammunition demand. During 2020, Olin expects to reduce working capital by approximately $150 million.

Investing Activities

Capital spending of $166.5 million for the six months ended June 30, 2020 was $24.8 million lower than the corresponding period in 2019. For the total year 2020, we expect our capital spending to be in the $250 million to $275 million range, which is expected to include $40 million for the Information Technology Project. For the total year 2020, depreciation and amortization expense is forecast to be in the $550 million to $575 million range.

During 2017, we began a multi-year implementation of the Information Technology Project. The project is planned to standardize business processes across the chemicals businesses with the objective of maximizing cost effectiveness, efficiency and control across our global operations. The project is anticipated to be substantially completed during 2020. Total capital spending is forecast to be $220 million and associated expenses are forecast to be $190 million, including duplicate information technology costs being incurred during the transition.  Our results for the six months ended June 30, 2020 included $32.8 million of capital spending and $35.1 million of expenses associated with this project. Our results for the six months ended June 30, 2019 included $39.3 million of capital spending and $35.6 million of expenses associated with this project.

For the six months ended June 30, 2020, a payment of $461.0 million was made associated with long-term supply contracts to reserve additional ethylene at producer economics from Dow and a payment of $75.8 million was made associated with the resolution of a dispute over the allocation to Olin of certain capital costs incurred at our Plaquemine, LA site after the Closing Date of the Acquisition.

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On January 1, 2019, we sold our 9.1% limited partnership interest in Bay Gas for $20.0 million. The sale closed on February 7, 2019 which resulted in a gain of $11.2 million.

Financing Activities

For the six months ended June 30, 2020, we had long-term debt borrowings, net of $737.4 million, which primarily included $497.5 million from the issuance of the 2025 Notes and $240.7 million under our Receivables Financing Agreement.

On May 19, 2020, Olin issued $500.0 million aggregate principal amount of 9.50% senior notes due June 1, 2025. The 2025 Notes were issued at 99.5% of par value, the discount from which is included within long-term debt in the condensed balance sheet. Interest on the 2025 Notes is payable semi-annually beginning on December 1, 2020. Proceeds from the 2025 Notes were used for general corporate purposes.

For the six months ended June 30, 2019, we made long-term debt repayments, net of $25.6 million, primarily related to the $1,375.0 million term loan facility.

For the six months ended June 30, 2020, we paid debt issuance costs of $9.6 million for the issuance of the 2025 Notes and amendments to our Senior Secured Credit Facility and Receivables Financing Agreement.

For the six months ended June 30, 2019, we repurchased and retired 1.2 million shares with a total cost of $26.7 million.

We issued less than 0.1 million and 0.1 million shares representing stock options exercised for the six months ended June 30, 2020 and 2019, respectively, with a total value of $0.7 million and $1.5 million, respectively.

The percent of total debt to total capitalization increased to 65.1% as of June 30, 2020 from 58.0% as of December 31, 2019 as a result of a higher level of debt outstanding and lower shareholders’ equity primarily resulting from our operating results and the payment of quarterly cash dividends.

In the first two quarters of 2020 and 2019, we paid a quarterly dividend of $0.20 per share. Dividends paid for the six months ended June 30, 2020 and 2019, were $63.1 million and $65.7 million, respectively. On July 30, 2020, our board of directors declared a dividend of $0.20 per share on our common stock, payable on September 10, 2020 to shareholders of record on August 10, 2020.

The payment of cash dividends is subject to the discretion of our board of directors and will be determined in light of then-current conditions, including our earnings, our operations, our financial condition, our capital requirements and other factors deemed relevant by our board of directors. In the future, our board of directors may change our dividend policy, including the frequency or amount of any dividend, in light of then-existing conditions.

Liquidity and Other Financing Arrangements

Our principal sources of liquidity are from cash and cash equivalents, cash flow from operations and borrowings under our Delayed Draw Term Loan, Senior Revolving Credit Facility, Receivables Financing Agreement and AR Facilities. Additionally, we believe that we have access to the high-yield debt and equity markets.

On May 19, 2020, Olin issued $500.0 million aggregate principal amount of 9.50% senior notes due June 1, 2025. The 2025 Notes were issued at 99.5% of par value, the discount from which is included within long-term debt in the condensed balance sheets. Interest on the 2025 Notes is payable semi-annually beginning on December 1, 2020. Proceeds from the 2025 Notes were used for general corporate purposes.

On May 8, 2020, we entered into a $1,300.0 million Senior Secured Credit Facility that amended our existing five-year, $2,000.0 million senior credit facility. The Senior Secured Credit Facility includes a Delayed Draw Term Loan Facility with aggregate commitments of $500.0 million and a Senior Revolving Credit Facility with aggregate commitments in an amount equal to $800.0 million. The maturity date for the Senior Secured Credit Facility is July 16, 2024. The amendment modified the financial covenants of the Senior Secured Credit Facility to be less restrictive and expanded the permitted use of proceeds of the Delayed Draw Term Loan Facility to include general corporate purposes.

The amendment also requires that the obligations under the Senior Secured Credit Facility be guaranteed by certain of our domestic subsidiaries, which are also guarantors of Olin’s outstanding notes, with the exception of the $200.0 million senior notes due 2022. The obligations under the Senior Secured Credit Facility are also secured by liens on substantially all of Olin’s

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and the subsidiary guarantors’ personal property (Collateral), other than certain principal properties and capital stock of subsidiaries, and subject to certain other exceptions. The amendment provides that substantially all guarantees under the Senior Secured Credit Facility and liens on the Collateral will be released automatically when our net leverage ratio is below 3.50 to 1.00 for two consecutive fiscal quarters.

The Senior Revolving Credit Facility includes a $100.0 million letter of credit subfacility. At June 30, 2020, we had $799.6 million available under our $800.0 million Senior Revolving Credit Facility because we had issued $0.4 million of letters of credit.  The Delayed Draw Term Loan Facility is available on a delayed basis in up to three draws to be made on or prior to November 29, 2020.

Under the Senior Secured Credit Facility, we may select various floating-rate borrowing options. The actual interest rate paid on borrowings under the Senior Secured Credit Facility is based on a pricing grid which is dependent upon the net leverage ratio as calculated under the terms of the applicable facility for the prior fiscal quarter.  The Senior Secured Credit Facility includes various customary restrictive covenants, including restrictions related to the ratio of secured debt to earnings before interest expense, taxes, depreciation and amortization (secured leverage ratio) and the ratio of earnings before interest expense, taxes, depreciation and amortization to interest expense (coverage ratio).  The calculation of secured debt in our secured leverage ratio excludes borrowings under the Receivables Financing Agreement, up to a maximum of $250.0 million. As of June 30, 2020, the only secured borrowings included in the secured leverage ratio were $153.0 million for our Go Zone and Recovery Zone bonds. Compliance with these covenants is determined quarterly. We were in compliance with all covenants and restrictions under all our outstanding credit agreements as of June 30, 2020, and no event of default had occurred that would permit the lenders under our outstanding credit agreements to accelerate the debt if not cured. In the future, our ability to generate sufficient operating cash flows, among other factors, will determine the amounts available to be borrowed under these facilities. As a result of our restrictive covenant related to the secured leverage ratio, the maximum additional borrowings available to us could be limited in the future.  The limitation, if an amendment or waiver from our lenders is not obtained, could restrict our ability to borrow the maximum amounts available under the Senior Revolving Credit Facility and the Receivables Financing Agreement.  As of June 30, 2020, there were no covenants or other restrictions that limited our ability to borrow.

The overall increase in cash for the six months ended June 30, 2020 primarily reflects our borrowings under the 2025 Notes and Receivables Financing Agreement, partially offset by our payments under long-term supply contracts and capital spending. We believe, based on current and projected levels of cash flow from our operations, together with our cash and cash equivalents on hand and the availability to borrow under our Senior Revolving Credit Facility, Delayed Draw Term Loan Facility, Receivables Financing Agreement and AR Facilities, we have sufficient liquidity to meet our short-term and long-term needs to make required payments of interest on our debt, fund our operating needs, working capital and our capital expenditure requirements.

On April 26, 2018, our board of directors authorized a share repurchase program for the purchase of shares of common stock at an aggregate price of up to $500.0 million.  This program will terminate upon the purchase of $500.0 million of our common stock. There were no shares repurchased for the six months ended June 30, 2020. For the six months ended June 30, 2019, 1.2 million shares were repurchased and retired at a cost of $26.7 million. As of June 30, 2020, we had repurchased a total of $195.9 million of our common stock, representing 10.1 million shares, and $304.1 million of common stock remained authorized to be repurchased.

In connection with the Acquisition, Olin and Dow entered into arrangements for the long-term supply of ethylene by Dow to Olin, pursuant to which, among other things, Olin made upfront payments in order to receive ethylene at producer economics and for certain reservation fees and for the option to obtain additional future ethylene supply at producer economics. On February 27, 2017, we exercised the remaining option to reserve additional ethylene at producer economics from Dow. In connection with the exercise of this option, we also secured a long-term customer arrangement. As a result, an additional payment was made to Dow of $461.0 million during the second quarter of 2020.

On July 16, 2019, our existing $250.0 million Receivables Financing Agreement was extended to July 15, 2022 and downsized to $10.0 million with the option to expand (Receivables Financing Agreement). During the six months ended June 30, 2020, we amended the Receivables Financing Agreement to expand the borrowing capacity to $250.0 million and borrowed $240.7 million, net of repayments. The Receivables Financing Agreement includes a minimum borrowing requirement of 50% of the facility limit or available borrowing capacity, whichever is lesser, beginning on October 1, 2020. The administrative agent for our Receivables Financing Agreement is PNC Bank, National Association.  Under the Receivables Financing Agreement, our eligible trade receivables are used for collateralized borrowings and continue to be serviced by us. In addition, the Receivables Financing Agreement incorporates the secured leverage covenant that is contained in the Senior Secured Credit Facility. As of June 30, 2020, we had $240.7 million drawn and zero additional borrowing capacity under the Receivables

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Financing Agreement as a result of a limitation on our borrowing base. As of June 30, 2020, $326.4 million of our trade receivables were pledged as collateral. As of December 31, 2019 and June 30, 2019, we had zero and $150.0 million, respectively, drawn under the Receivables Financing Agreement.

Olin also has trade accounts receivable factoring arrangements (AR Facilities) and pursuant to the terms of the AR Facilities, certain of our subsidiaries may sell their accounts receivable up to a maximum of $315.0 million. We will continue to service the outstanding accounts sold. These receivables qualify for sales treatment under ASC 860 and, accordingly, the proceeds are included in net cash provided by operating activities in the condensed statements of cash flows. The gross amount of receivables sold for the six months ended June 30, 2020 and 2019 totaled $457.5 million and $522.4 million, respectively.  The factoring discount paid under the AR Facilities is recorded as interest expense on the condensed statements of operations. The factoring discount was $0.4 million and $1.0 million for the three months ended June 30, 2020 and 2019, respectively, and $1.0 million and $1.5 million for the six months ended June 30, 2020 and 2019, respectively. The agreements are without recourse and therefore no recourse liability has been recorded as of June 30, 2020, December 31, 2019 and June 30, 2019.  As of June 30, 2020, December 31, 2019 and June 30, 2019, $61.7 million, $63.1 million and $98.7 million, respectively, of receivables qualifying for sales treatment were outstanding and will continue to be serviced by us.

Cash flow from operations is variable as a result of both the seasonal and the cyclical nature of our operating results, which have been affected by seasonal and economic cycles in many of the industries we serve, such as the vinyls, urethanes, bleach, ammunition and pulp and paper. Cash flow from operations is affected by changes in chlorine, caustic soda and EDC selling prices caused by the changes in the supply/demand balance of these products, resulting in the Chlor Alkali Products and Vinyls segment having significant leverage on our earnings and cash flow. For example, assuming all other costs remain constant, internal consumption remains approximately the same and we are operating at full capacity, a $10 selling price change per ton of chlorine equates to an approximate $10 million annual change in our revenues and pretax profit, a $10 selling price change per ton of caustic soda equates to an approximate $30 million annual change in our revenues and pretax profit, and a $0.01 selling price change per pound of EDC equates to an approximate $20 million annual change in our revenues and pretax profit.

For the six months ended June 30, 2020, cash provided by operating activities decreased by $180.7 million from the six months ended June 30, 2019, primarily due to a decrease in operating results. For the six months ended June 30, 2020, working capital decreased $30.8 million compared to an increase of $91.3 million for the six months ended June 30, 2019. Receivables decreased by $64.1 million from December 31, 2019, primarily as a result of lower sales prices and lower volumes during 2020. Inventories decreased by $75.7 million from December 31, 2019, primarily as a result of lower raw material costs and lower Winchester inventory due to improved commercial ammunition demand. During 2020, Olin expects to reduce working capital by approximately $150 million.

Capital spending of $166.5 million for the six months ended June 30, 2020 was $24.8 million lower than the corresponding period in 2019. For the total year 2020, we expect our capital spending to be in the $250 million to $275 million range, which is expected to include $40 million for the Information Technology Project. For the total year 2020, depreciation and amortization expense is forecast to be in the $550 million to $575 million range.

At June 30, 2020, we had total letters of credit of $78.0 million outstanding, of which $0.4 million were issued under our Senior Revolving Credit Facility. The letters of credit were used to support certain long-term debt, certain workers compensation insurance policies, certain plant closure and post-closure obligations, certain international payment obligations and certain international pension funding requirements.

Our current debt structure is used to fund our business operations. As of June 30, 2020, we had long-term borrowings, including the current installment and finance lease obligations, of $4,075.7 million, of which $396.6 million was at variable rates. Included within long-term borrowings on the condensed balance sheets were deferred debt issuance costs, unamortized bond original issue discount and deferred losses on fair value interest rate swaps. Commitments from banks under our Senior Revolving Credit Facility, Delayed Draw Term Loan Facility, Receivables Financing Agreement and AR Facilities are additional sources of liquidity.

Off-Balance Sheet Arrangements

Purchasing commitments are utilized in our normal course of business for our projected needs. We have supply contracts with various third parties for certain raw materials including ethylene, electricity, propylene and benzene. These agreements are maintained through long-term cost based contracts that provide us with a reliable supply of key raw materials.

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New Accounting Standards

In March 2020, the U.S. Securities and Exchange Commission issued final rule 33-10762, “Financial Disclosures About Guarantors and Issuers of Guaranteed Securities and Affiliates Whose Securities Collateralize a Registrant’s Securities.” This rule simplifies the disclosure requirements related to registered securities under Rule 3-10 of Regulation S-X by modifying criteria to qualify for an exception to the requirement that an entity file separate financial statements for subsidiary issuers and guarantors. The rule also reduces and, in some cases, eliminates the disclosures an entity must provide in lieu of the subsidiary’s audited financial statements and allows disclosures to be summarized and included within Management’s Discussion and Analysis of Financial Condition and Results of Operations. The rule requires certain enhanced narrative disclosures, including the terms and conditions of the guarantees and how the legal obligations of the issuer and guarantor, as well as other factors, may affect payments to holders of the debt securities. The final rule is effective on January 4, 2021, with earlier application permitted. We are currently evaluating the impact of this rule on our consolidated financial statements; however, we do not expect this rule to have a material impact on our consolidated financial statements. The most significant impact the rule will have is on our disclosures included within Note 20 “Supplemental Guarantor Financial Information” of the Notes to Condensed Financial Statements in Item 1.

In March 2020, the Financial Accounting Standards Board (FASB) issued Accounting Standards Update (ASU) 2020-04, “Facilitation of the Effects of Reference Rate Reform on Financial Reporting” which creates a new topic, ASC 848 “Reference Rate Reform.”  This update provides optional guidance to ease the potential accounting burden associated with transition away from reference rates that are expected to be discontinued at the end of 2021, at which time financial institutions will no longer be required to report information that is currently used to determine the London Interbank Offered Rate (LIBOR) and other reference rates.  This update allows companies to treat contract amendments to existing contracts for the purpose of establishing a new reference rate as continuations of those contracts without additional analysis, as long as the modification was made to establish a new reference rate.  This update applies prospectively to contract modifications.  The optional guidance was effective on March 12, 2020 and can be adopted beginning January 1, 2020 or any date thereafter until December 31, 2022, at which time the optional guidance can no longer be applied to contract amendments to existing contracts. We adopted the provisions of this update on January 1, 2020 and will apply this guidance prospectively to contract modifications that are entered into for the purpose of establishing a new reference rate.  We are currently evaluating the prospective impact on our consolidated financial statements; however, for the three and six months ended June 30, 2020, the adoption of this update did not have a material impact on our consolidated financial statements.

In December 2019, the FASB issued ASU 2019-12, “Simplifying the Accounting for Income Taxes” which amends ASC 740 “Income Taxes” (ASC 740). This update is intended to simplify accounting for income taxes by removing certain exceptions to the general principles in ASC 740 and amending existing guidance to improve consistent application of ASC 740. This update is effective for fiscal years beginning after December 15, 2020 and interim periods within those fiscal years. The guidance in this update has various elements, some of which are applied on a prospective basis and others on a retrospective basis with earlier application permitted.  We adopted this update on January 1, 2020 which did not have a material impact on our consolidated financial statements.

In January 2017, the FASB issued ASU 2017-04, “Simplifying the Test for Goodwill Impairment” which amends ASC 350. This update will simplify the measurement of goodwill impairment by eliminating Step 2 from the goodwill impairment test. This update will require an entity to perform its annual, or interim, goodwill impairment test by comparing the fair value of a reporting unit with its carrying amount and recognize an impairment charge for the amount by which the carrying amount exceeds the reporting unit’s fair value. The update does not modify the option to perform the qualitative assessment for a reporting unit to determine if the quantitative impairment test is necessary. This update is effective for fiscal years beginning after December 15, 2019, and interim periods within those fiscal years. The guidance in this update is applied on a prospective basis, with earlier application permitted. We adopted this update on January 1, 2020 which did not have a material impact on our consolidated financial statements.

In June 2016, the FASB issued ASU 2016-13, “Measurement of Credit Losses on Financial Instruments,” (ASU 2016-13) which amends ASC 326 “Financial Instruments—Credit Losses” (ASC 326).  Subsequent to the issuance of ASU 2016-13, ASC 326 was amended by various updates that amend and clarify the impact and implementation of the aforementioned update.  The new guidance introduces the current expected credit loss (CECL) model, which will require an entity to record an allowance for credit losses for certain financial instruments and financial assets, including trade receivables, based on expected losses rather than incurred losses.  Under this update, on initial recognition and at each reporting period, an entity will be required to recognize an allowance that reflects the entity’s current estimate of credit losses expected to be incurred over the life of the financial instrument.  This update is effective for fiscal years beginning after December 15, 2019, and interim periods within those fiscal years.  The guidance in this update has various elements, some of which are applied on a

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prospective basis and others on a retrospective basis, with earlier application permitted.  We adopted this update on January 1, 2020 which did not have a material impact on our consolidated financial statements and related disclosures.

Item 3. Quantitative and Qualitative Disclosures about Market Risk.

We are exposed to market risk in the normal course of our business operations due to our purchases of certain commodities, our ongoing investing and financing activities and our operations that use foreign currencies. The risk of loss can be assessed from the perspective of adverse changes in fair values, cash flows and future earnings. We have established policies and procedures governing our management of market risks and the use of financial instruments to manage exposure to such risks.

Energy costs, including electricity and natural gas, and certain raw materials used in our production processes are subject to price volatility. Depending on market conditions, we may enter into futures contracts, forward contracts, commodity swaps and put and call option contracts in order to reduce the impact of commodity price fluctuations. As of June 30, 2020, we maintained open positions on commodity contracts with a notional value totaling $225.1 million ($174.6 million at December 31, 2019 and $186.1 million at June 30, 2019). Assuming a hypothetical 10% increase in commodity prices which are currently hedged, as of June 30, 2020, we would experience a $22.5 million ($17.5 million at December 31, 2019 and $18.6 million at June 30, 2019) increase in our cost of inventory purchased, which would be substantially offset by a corresponding increase in the value of related hedging instruments.

We transact business in various foreign currencies other than the USD which exposes us to movements in exchange rates which may impact revenue and expenses, assets and liabilities and cash flows. Our significant foreign currency exposure is denominated with European currencies, primarily the Euro, although exposures also exist in other currencies of Asia Pacific, Latin America, Middle East and Africa. For all derivative positions, we evaluated the effects of a 10% shift in exchange rates between those currencies and the USD, holding all other assumptions constant. Unfavorable currency movements of 10% would negatively affect the fair values of the derivatives held to hedge currency exposures by $27.3 million. These unfavorable changes would generally have been offset by favorable changes in the values of the underlying exposures.

We are exposed to changes in interest rates primarily as a result of our investing and financing activities. Our current debt structure is used to fund business operations, and commitments from banks under our Senior Revolving Credit Facility, Delayed Draw Term Loan, Receivables Financing Agreement and AR Facilities are additional sources of liquidity. As of June 30, 2020, December 31, 2019 and June 30, 2019, we had long-term borrowings, including current installments and finance lease obligations, of $4,075.7 million, $3,340.8 million and $3,233.7 million, respectively, of which $396.6 million, $155.9 million and $798.9 million at June 30, 2020, December 31, 2019 and June 30, 2019, respectively, were issued at variable rates. Included within long-term borrowings on the condensed balance sheets were deferred debt issuance costs, unamortized bond original issue discount and deferred losses on fair value interest rate swaps.

Assuming no changes in the $396.6 million of variable-rate debt levels from June 30, 2020, we estimate that a hypothetical change of 100-basis points in the LIBOR interest rates would impact annual interest expense by $4.0 million.

Our interest rate swaps reduced interest expense by $0.2 million and $0.8 million for the three and six months ended June 30, 2019.

If the actual changes in commodities, foreign currency, or interest pricing is substantially different than expected, the net impact of commodity risk, foreign currency risk, or interest rate risk on our cash flow may be materially different than that disclosed above.

We do not enter into any derivative financial instruments for speculative purposes.

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Item 4. Controls and Procedures.

Our chief executive officer and our chief financial officer evaluated the effectiveness of our disclosure controls and procedures as of June 30, 2020. Based on that evaluation, our chief executive officer and chief financial officer have concluded that, as of such date, our disclosure controls and procedures were effective to ensure that information Olin is required to disclose in the reports that it files or submits with the SEC under the Securities Exchange Act of 1934 is recorded, processed, summarized and reported within the time periods specified in the Commission’s rules and forms, and to ensure that information we are required to disclose in such reports is accumulated and communicated to our management, including our chief executive officer and chief financial officer, as appropriate to allow timely decisions regarding required disclosure.

There have been no changes in our internal control over financial reporting that occurred during the quarter ended June 30, 2020, that have materially affected, or are reasonably likely to materially affect, our internal control over financial reporting.

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Cautionary Statement Regarding Forward-Looking Statements

This quarterly report on Form 10-Q includes forward-looking statements. These statements relate to analyses and other information that are based on management’s beliefs, certain assumptions made by management, forecasts of future results, and current expectations, estimates and projections about the markets and economy in which we and our various segments operate. The statements contained in this quarterly report on Form 10-Q that are not statements of historical fact may include forward-looking statements that involve a number of risks and uncertainties.

We have used the words “anticipate,” “intend,” “may,” “expect,” “believe,” “should,” “plan,” “project,” “estimate,” “forecast,” “optimistic,” and variations of such words and similar expressions in this quarterly report to identify such forward-looking statements. These statements are not guarantees of future performance and involve certain risks, uncertainties and assumptions, which are difficult to predict and many of which are beyond our control. Therefore, actual outcomes and results may differ materially from those matters expressed or implied in such forward-looking statements. We undertake no obligation to update publicly any forward-looking statements, whether as a result of future events, new information or otherwise. The payment of cash dividends is subject to the discretion of our board of directors and will be determined in light of then-current conditions, including our earnings, our operations, our financial conditions, our capital requirements and other factors deemed relevant by our board of directors. In the future, our board of directors may change our dividend policy, including the frequency or amount of any dividend, in light of then-existing conditions.

The risks, uncertainties and assumptions involved in our forward-looking statements, many of which are discussed in more detail in our filings with the SEC, including without limitation the “Risk Factors” section of our Annual Report on Form 10-K for the year ended December 31, 2019 as supplemented by the additional Risk Factor set forth in Part II, Item 1A of this Quarterly Report, include, but are not limited to the following:

• sensitivity to economic, business and market conditions in the United States and overseas, including economic instability or a downturn in the sectors served by us, such as vinyls, urethanes, and pulp and paper;

• the cyclical nature of our operating results, particularly declines in average selling prices in the chlor alkali industry and the supply/demand balance for our products, including the impact of excess industry capacity or an imbalance in demand for our chlor alkali products;

• our reliance on a limited number of suppliers for specified feedstock and services and our reliance on third-party transportation;

• higher-than-expected raw material, energy, transportation and/or logistics costs;

• failure to control costs or to achieve targeted cost reductions;

• new regulations or public policy changes regarding the transportation of hazardous chemicals and the security of chemical manufacturing facilities;

• the occurrence of unexpected manufacturing interruptions and outages, including those occurring as a result of labor disruptions and production hazards;

• weak industry conditions affecting our ability to comply with the financial maintenance covenants in our senior secured credit facility;

• the negative impact from the COVID-19 pandemic and the global response to the pandemic; 

• the failure or an interruption of our information technology systems;

• complications resulting from our multiple enterprise resource planning systems and the conversion to a new system;

• a loss of a substantial customer for either chlorine or caustic soda could cause an imbalance in customer demand for these products;

• our substantial amount of indebtedness and significant debt service obligations;

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• unexpected litigation outcomes;

• changes in, or failure to comply with, legislation or government regulations or policies;

• costs and other expenditures in excess of those projected for environmental investigation and remediation or other legal proceedings;

• failure to attract, retain and motivate key employees;

• the effects of any declines in global equity markets on asset values and any declines in interest rates used to value the liabilities in our pension plan;

• adverse changes in international markets, including economic, political or regulatory changes;

• our long range plan assumptions not being realized causing a non-cash impairment charge of long-lived assets;

• adverse conditions in the credit and capital markets, limiting or preventing our ability to borrow or raise capital; and

• various risks associated with our transition and subsequent operation of the Lake City U.S. Army Ammunition Plant.

All of our forward-looking statements should be considered in light of these factors. In addition, other risks and uncertainties not presently known to us or that we consider immaterial could affect the accuracy of our forward-looking statements.

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Part II — Other Information

Item 1. Legal Proceedings.

Not Applicable.

Item 1A. Risk Factors.

The following is a supplement and update to the risk factors in Part I, Item 1A “Risk Factors,” in our Annual Report on Form 10-K for the year ended December 31, 2019. The following factors should be considered in evaluating Olin and our business. All of our forward-looking statements should be considered in light of these factors. Additional risks and uncertainties that we are unaware of or that we currently deem immaterial also may become important factors that affect us.

2019 Novel Coronavirus (COVID-19) Pandemic—The COVID-19 pandemic and the global response to the pandemic could have a material adverse impact on our business, financial condition, or results of operations.

The COVID-19 pandemic and the various governmental, business, and consumer responses to the pandemic are having and could continue to have negative impacts on our business.  These impacts could include plant closures or operating reductions, volatility and decrease in demand for our products, and supply chain interruptions. Furthermore, the pandemic and responses thereto could cause or contribute to certain of the risks and uncertainties described in our Form 10-K, including Sensitivity to Global Economic Conditions and Cyclicality, Cyclical Pricing Pressure, Raw Materials, Credit Facility, and Credit and Capital Market Conditions.  During the first quarter 2020, the Epoxy business had manufacturing plant closures and operating reductions in Asia due to COVID-19. Our customers could reduce production rates or curtail production and we could experience additional temporary plant closures and operating reductions due to the COVID-19 crisis.  These impacts could become more widespread or prolonged as the pandemic continues.  The extent to which COVID-19 impacts our results will depend on future developments that are out of our control and highly uncertain, including the severity and duration of the pandemic, the domestic and international actions that are taken in response, and the extent and severity of any resulting economic or industry downturn.

Item 2. Unregistered Sales of Equity Securities and Use of Proceeds.

(a) Not Applicable.

(b) Not Applicable.

(c)

Issuer Purchases of Equity Securities

Period	Total Number of Shares (or Units) Purchased(1)	Average Price Paid per Share (or Unit)	Total Number of Shares (or Units) Purchased as Part of Publicly Announced Plans or Programs	Maximum Dollar Value of Shares (or Units) that May Yet Be Purchased Under the Plans or Programs
April 1-30, 2020	—	$—	—
May 1-31, 2020	—	—	—
June 1-30, 2020	—	—	—
Total				304,075,829	(1)

(1) On April 26, 2018, our board of directors authorized a share repurchase program for the purchase of shares of common stock at an aggregate price of up to $500.0 million.  This program will terminate upon the purchase of $500.0 million of our common stock. Through June 30, 2020, 10,072,741 shares had been repurchased at a total value of $195,924,171 and $304,075,829 of common stock remained available for purchase under the program.

Item 3. Defaults Upon Senior Securities.

Not Applicable.

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Item 4. Mine Safety Disclosures.

Not Applicable.

Item 5. Other Information.

Not Applicable.

Item 6. Exhibits.

Exhibit	Exhibit Description
4.1	Ninth Amendment to Amended and Restated Credit and Funding Agreement, dated as of May 8, 2020, among Olin Corporation, the Lenders (as defined therein), and PNC Bank, National Association—Exhibit 4.1 to Olin’s Form 8-K filed May 11, 2020*
4.2	Indenture, dated as of May 19, 2020, among Olin Corporation and U.S. Bank National Association, as trustee, governing the Senior Notes—Exhibit 4.1 to Olin’s Form 8-K filed May 20, 2020*
4.3	Form of 9.500% Senior Notes due 2025—Exhibit 4.2 (included in Exhibit 4.1) to Olin’s Form 8-K filed May 20, 2020*
10.1	Performance Share Program as amended through April 22, 2020
10.2	Offer Letter dated as of July 14, 2020 by and between Scott M. Sutton and Olin Corporation—Exhibit 10.1 to Olin’s Form 8-K filed July 15, 2020*
10.3	Second Amendment to Credit Agreement, dated as of May 8, 2020, among Olin Corporation, Blue Cube Spinco, LLC, the Lenders and Issuing Banks (as defined therein) and Bank of America, N.A.—Exhibit 10.1 to Olin’s Form 8-K filed May 11, 2020*
10.4	Amendment No. 4 to Receivables Financing Agreement and Reaffirmation of Performance Guaranty, dated as of May 8, 2020, among Olin Corporation, Olin Finance Company, LLC, PNC Bank, National Association, PNC Capital Markets LLC and the Lender parties thereto—Exhibit 10.2 to Olin’s Form 8-K filed May 11, 2020*
11	Computation of Per Share Earnings (included in Note 8 “Earnings Per Share” to Notes to Condensed Financial Statements in Item 1)
31.1	Section 302 Certification Statement of Chief Executive Officer
31.2	Section 302 Certification Statement of Chief Financial Officer
32	Section 906 Certification Statement of Chief Executive Officer and Chief Financial Officer
101.INS	XBRL Instance Document**
101.SCH	XBRL Taxonomy Extension Schema Document
101.CAL	XBRL Taxonomy Extension Calculation Linkbase Document
101.DEF	XBRL Taxonomy Extension Definition Linkbase Document
101.LAB	XBRL Taxonomy Extension Label Linkbase Document
101.PRE	XBRL Taxonomy Extension Presentation Linkbase Document
104	Cover Page Interactive Data File (embedded in the Exhibit 101 Interactive Data Files)
*Previously filed as indicated and incorporated herein by reference.  Exhibits incorporated by reference are located in SEC file No. 1-1070 unless otherwise indicated.
**The instance document does not appear in the Interactive Data File because its XBRL tags are embedded within the Inline eXtensible Business Reporting Language (iXBRL) document. The condensed financial statements and notes thereto contained in Part I, Item 1 were formatted in iXBRL in this Quarterly Report on Form 10-Q.

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SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.

OLIN CORPORATION
(Registrant)
By:	/s/ Todd A. Slater
	Vice President and Chief Financial Officer (Authorized Officer)

Date: August 6, 2020

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EX-10.1

Exhibit 10.1

OLIN CORPORATION

PERFORMANCE SHARE PROGRAM

As Amended through April 22, 2020

1.Terms and Conditions

The terms and conditions of the Performance Share Awards granted under this Program are contained in the Performance Share Award certificate evidencing such Award, this Program and the LTIP.

2.Definitions

“Common Stock” means the common stock of Olin, par value $1.00 per share.

“Final Share Number” has the meaning specified in Section 3 of this Program.

“LTIP” means the Olin Corporation 2018 Long Term Incentive Plan and any successor plan.

“Net Income” means Olin’s actual net income for the relevant Performance Cycle (or if applicable, for the relevant period in such Performance Cycle), calculated in accordance with generally accepted accounting principles, adjusted to exclude unusual gains and losses (as determined by the Committee).

“Net Income Goal” means each Net Income target set by the Committee for one or more periods included in the relevant three-year Performance Cycle, with the total number of target Net Income Performance Shares allocated among the Net Income Goals if more than one such goal is established for a Performance Cycle.

“Net Income Performance Shares” means the total number of Performance Shares awarded based on Olin’s Net Income performance against the Net Income Goals for the relevant Performance Cycle, allocated among the Net Income Goals by the Committee as established by the Committee if the Committee establishes more than one Net Income Goal for a Performance Cycle.

“Olin” or “The Company” means Olin Corporation.

“Performance Cycle” means, with respect to a Performance Share Award, a period of three calendar years, beginning with the calendar year in which such Performance Share Award is granted.

“Performance Share Award” means grants of “Performance Shares.”

“Performance Share” means a unit granted under the LTIP and this Program, maintained on the books of the Company during the Performance Cycle, denominated as one phantom share of Common Stock, and paid in cash or Common Stock in accordance with this Program, and includes both TSR Performance Shares and Net Income Performance Shares.

“Performance Share Comparison Group” means the Standard & Poor’s 1000 Material companies plus Occidental Petroleum Corporation and Westlake Chemical Corporation.

“Program” means this Performance Share Program.

“TSR” means total shareholder return, calculated as the change in the fair market value of the common stock, including reinvestment of dividends, over the relevant Performance Cycle.

“TSR Performance Shares” means the Performance Shares awarded based on Olin’s relative TSR compared to the Performance Share Comparison Group.

Capitalized terms not otherwise defined in this Program shall have the meaning specified in the LTIP.

3.Performance Share Awards

a. One-half (1/2) of the total target Performance Share Award shall be designated in TSR Performance Shares, and the remaining one-half in Net Income Performance Shares.

b. The number of target TSR Performance Shares for each Participant shall be adjusted based upon a comparison of Olin’s TSR during the Performance Cycle with the TSR of the Performance Share Comparison Group over the same period, in accordance with the following chart:

If Olin’s TSR for a Performance Cycle is:	The number of TSR Performance Shares paid as a percentage of the target TSR Performance Share Award will be:
At or above the 80th Percentile of the Performance Share Comparison Group	200%
Above the 50th Percentile, but below the 80th Percentile of the TSR for the Performance Share Comparison Group	100% of target number of TSR Performance Shares plus 3.33% of the target number of TSR Performance Shares for each incremental percentile position above the 50th Percentile
At the 50th Percentile of the TSR for the Performance Share Comparison Group	100% of the target number of TSR Performance Shares
Above the 20th Percentile, but below the 50th Percentile of the TSR for the Performance Share Comparison Group	25% of the target number of TSR Performance Shares plus 2.5% of the target number of TSR Performance Shares for each incremental percentile position above the 20th Percentile
At the 20th Percentile of the TSR for the Performance Share Comparison Group	25% of the target number of TSR Performance Shares
Below the 20th Percentile of the TSR for the Performance Share Comparison Group	0

c. The number of target Net Income Performance Shares awarded to each Participant for each Net Income Goal shall be adjusted based upon a comparison of Olin’s actual Net Income with that Net Income Goal, in accordance with the following chart:

If Olin’s Net Income for the relevant portion of the Performance Cycle is:	The number of Net Income Performance Shares paid as a percentage of the target Net Income Performance Shares allocated to that Net Income Goal will be:
At least 140% of the relevant Net Income Goal	200% of the target number of Net Income Performance Shares allocated to that Net Income Goal
More than 100% but less than 140% of the relevant Net Income Goal	100% of the target number of Net Income Performance Shares allocated to that Net Income Goal plus a proportionate number of target Net Income Performance Shares determined using linear interpolation
100% of the Net Income Goal	100% of the target number of Net Income Performance Shares allocated to that Net Income Goal
More than 60% but less than 100% of the relevant Net Income Goal	50% of the target number of Net Income Performance Shares allocated to that Net Income Goal plus a proportionate number of target Net Income Performance Shares determined using linear interpolation
60% of the relevant Net Income Goal	50% of the target number of Net Income Performance Shares allocated to that Net Income Goal
Less than 60% of the relevant Net Income Goal	0

d. The Company shall use linear interpolation to determine the number of additional Net Income Performance Shares for performance between 60% and 100% and for 100% and 140% of each Net Income Goal.

e. As soon as practicable in the calendar year following the end of the Performance Cycle, the Company shall calculate the number of Performance Shares that vested (the “Final Share Number”) for all Participants whose Performance Share Awards have vested during or at the end of such Performance Cycle.

4.Vesting and Forfeiture

a. Except as otherwise provided by the Committee, the LTIP, this Program or the Performance Share Award certificate, an interest in a Performance Share Award shall vest only if the Participant is an employee of the Company or a subsidiary on the last day of the relevant Performance Cycle.

b. If a Participant’s employment with the Company or a subsidiary terminates for cause or without the Company’s consent (other than as the result of the Participant’s death, disability or retirement) before a Performance Share Award has vested, his or her Performance Share Award shall terminate and all rights under such Award shall be forfeited.

c. If a Participant’s employment with the Company or a subsidiary terminates as the result of his or her disability, (as that term is defined in Section 409A of the Code or any successor provision), or retirement under any of the Company’s retirement plans before a Performance Share Award has vested, the Participant shall be entitled to a pro rata Performance Share Award, payable solely in cash at the time that the Performance Share Award would otherwise be payable under Section 5 of this Program. The cash payment shall be equal to the Final Share Number calculated in accordance with Sections 3 and 5 of this Program, multiplied by the Fair Market Value on the last day of the relevant Performance Cycle, multiplied by a fraction with a numerator equal to the number of months during the Performance Cycle the Participant was employed by the Company or a subsidiary (rounded up to the nearest whole month) and a denominator of 36.

d. If a Participant’s employment with the Company or a subsidiary terminates as the result of his or her death before a Performance Share Award has vested, the Participant shall be entitled to a pro rata Performance Share Award, payable solely in cash within ninety (90) days of the Participant’s death. The cash payment shall be equal to the Participant’s target number of Performance Shares, as the case may be, multiplied by the Fair Market Value on the date of the Participant’s death (or the next trading day, if the Common Stock was not traded on such date), multiplied by a fraction with a numerator equal to the number of months during the Performance Cycle the Participant was employed by the Company or a subsidiary (rounded up to the nearest whole month) and a denominator of 36.

e. If a Participant’s employment with the Company or a subsidiary terminates for any other reason, the Company shall determine the portion, if any, of the Performance Share Award that shall not be forfeited, and the form of payment (cash or shares or a combination) that the Participant shall receive. That determination shall be made by the Committee in the case of any officer, and by the Chairman of the Board, President, Chief Executive Officer, or any Vice President, in the case of any non-officer employee. Notwithstanding this Section 4, payment shall be made pursuant to Section 5 of this Program.

5.Payment and Timing

a. As soon as is administratively practicable after the determination of the Final Share Number, but not later than the last day of the calendar year following the Performance Cycle, the Company will (i) issue to each Participant a number of shares of Common Stock equal to one-half of the Final Share Number, rounded down to the nearest whole share if such number is not a whole number, and (ii) pay the Participant in cash an amount equal to the Fair Market Value of one-half of the Final Share Number of shares of Common Stock on the last day of the Performance Cycle, rounded up to the nearest whole share if such number is not a whole number.

b. No dividends or dividend equivalents shall be paid on any Performance Shares.

c. In calculating the number of Performance Shares, all percentages and percentile numbers will be rounded to the nearest one-hundredth of a percent.

6.Miscellaneous

a. By acceptance of the Performance Share Award, each Participant agrees that such Award is special compensation, and that any amount paid will not affect:

i. the amount of any pension under any pension or retirement plan in which he or she participates as an employee of Olin,

ii. the amount of coverage under any group life insurance plan in which he or she participates as an employee of Olin, or

iii. the benefits under any other benefit plan of any kind heretofore or hereafter in effect, under which the availability or amount of benefits is related to compensation.

b. The Company will withhold from the distribution of any cash pursuant to Performance Share Awards the amount necessary to satisfy the Participant’s federal, state and local withholding tax requirements. It is the Company’s intention that all income tax liability on Performance Share Awards be deferred in accordance with the applicable requirements of Code Section 409A, until the Participant actually receives such shares or payment thereof.

c. To the extent any provision of the Program (or any Performance Share Award) or action by the Board or Committee would subject any Participant to liability for interest or additional taxes under Code Section 409A, it will be deemed null and void, to the extent permitted by law and deemed advisable by the Committee. It is intended that the Program (and any Performance Share Award) will comply with Code Section 409A, and the Program (and any Performance Share Award) shall be interpreted and construed on a basis consistent with such intent. The Program (and any Performance Share Award) may be amended in any respect deemed necessary (including retroactively) by the Committee in order to preserve compliance with Code Section 409A. The preceding shall not be construed as a guarantee of any particular tax effect for Program benefits or Performance Share Awards. Except as specifically provided in the LTIP, a Participant (or beneficiary) is solely responsible and liable for the satisfaction of all taxes and penalties that may be imposed on the Participant (or beneficiary) in connection with any distributions to such Participant (or beneficiary) under the Program (including any taxes and penalties under Code Section 409A), and neither Olin nor any Affiliate shall have any obligation to indemnify or otherwise hold a Participant (or beneficiary) harmless from any or all of such taxes or penalties.

EX-31.1

Exhibit 31.1

CERTIFICATIONS

I, John E. Fischer, certify that:

1. I have reviewed this quarterly report on Form 10-Q of Olin Corporation;

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4. The registrant's other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

b) Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

c) Evaluated the effectiveness of the registrant's disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

d) Disclosed in this report any change in the registrant's internal control over financial reporting that occurred during the registrant's most recent fiscal quarter (the registrant's fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant's internal control over financial reporting; and

5. The registrant's other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant's auditors and the audit committee of the registrant's board of directors (or persons performing the equivalent functions):

a) All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant's ability to record, process, summarize and report financial information; and

b) Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant's internal control over financial reporting.

Date:	August 6, 2020	/s/ John E. Fischer
		John E. Fischer
		Chairman, President and Chief Executive Officer

EX-31.2

Exhibit 31.2

CERTIFICATIONS

I, Todd A. Slater, certify that:

1. I have reviewed this quarterly report on Form 10-Q of Olin Corporation;

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4. The registrant's other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

b) Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

c) Evaluated the effectiveness of the registrant's disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

d) Disclosed in this report any change in the registrant's internal control over financial reporting that occurred during the registrant's most recent fiscal quarter (the registrant's fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant's internal control over financial reporting; and

5. The registrant's other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant's auditors and the audit committee of the registrant's board of directors (or persons performing the equivalent functions):

a) All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant's ability to record, process, summarize and report financial information; and

b) Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant's internal control over financial reporting.

Date:	August 6, 2020	/s/ Todd A. Slater
		Todd A. Slater
		Vice President and Chief Financial Officer

EX-32

Exhibit 32

CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350, AS ADOPTED

PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the Quarterly Report of Olin Corporation (the “Company”) on Form 10-Q for the period ended June 30, 2020 as filed with the Securities and Exchange Commission (the “Report”), I, John E. Fischer, Chairman, President and Chief Executive Officer and I, Todd A. Slater, Vice President and Chief Financial Officer of the Company, certify, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that, to our knowledge: (1) the Report fully complies with the requirements of Section 13(a) of the Securities Exchange Act of 1934; and (2) the information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

A signed original of this written statement required by Section 906 has been provided to the Company and will be retained by the Company and furnished to the Securities and Exchange Commission or its Staff upon request.

/s/ John E. Fischer
John E. Fischer
Chairman, President and Chief Executive Officer
Dated:	August 6, 2020
/s/ Todd A. Slater
Todd A. Slater
Vice President and Chief Financial Officer
Dated:	August 6, 2020

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Document And Entity Information	6 Months Ended
	Jun. 30, 2020 shares
Cover [Abstract]
Entity Registrant Name	Olin Corporation
Entity Central Index Key	0000074303
Document Type	10-Q
Amendment Flag	false
Document Quarterly Report	true
Document Period End Date	Jun. 30, 2020
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2020
Document Fiscal Period Focus	Q2
Document Transition Report	false
Entity File Number	1-1070
Entity Incorporation, State or Country Code	VA
Entity Tax Identification Number	13-1872319
Entity Address, Address Line One	190 Carondelet Plaza,
Entity Address, Address Line Two	Suite 1530,
Entity Address, City or Town	Clayton,
Entity Address, State or Province	MO
Entity Address, Postal Zip Code	63105
City Area Code	314
Local Phone Number	480-1400
Title of 12(b) Security	Common Stock, $1.00 par value per share
Trading Symbol	OLN
Security Exchange Name	NYSE
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding	157,862,051

XML

Condensed Balance Sheets - USD ($) $ in Millions	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018
Current assets:
Cash and cash equivalents	$ 237.9		$ 220.9	$ 126.9		$ 178.8
Receivables, net	700.2		760.4	848.2
Income taxes receivable	17.6		13.9	23.4
Inventories, net	619.1		695.7	698.9
Other current assets	42.0		23.1	28.8
Total current assets	1,616.8		1,714.0	1,726.2
Property, plant and equipment (less accumulated depreciation of $3,484.9, $3,268.1 and $3,000.0)	3,234.9		3,323.8	3,410.5
Operating lease assets, net	371.8		377.8	295.8
Deferred income taxes	38.3		35.3	28.1
Other assets	1,179.7		1,169.1	1,174.5
Intangible assets, net	416.9		448.1	480.6
Goodwill	2,119.7		2,119.7	2,119.6		2,119.6
Total assets	8,978.1		9,187.8	9,235.3
Current liabilities:
Current installments of long-term debt	1.8		2.1	1.1
Accounts payable	520.8		651.9	669.2
Income taxes payable	7.7		19.8	9.5
Current operating lease liabilities	77.3		79.3	71.4
Accrued liabilities	318.7		329.1	298.9
Total current liabilities	926.3		1,082.2	1,050.1
Long-term debt	4,073.9		3,338.7	3,232.6
Operating lease liabilities	299.2		303.4	229.3
Accrued pension liability	768.0		797.7	653.6
Deferred income taxes	414.5		454.5	506.4
Other liabilities	307.3		793.8	792.5
Total liabilities	6,789.2		6,770.3	6,464.5
Commitments and contingencies
Shareholders’ equity:
Common stock, $1.00 par value per share: authorized, 240.0 shares; issued and outstanding, 157.9, 157.7 and 164.3 shares	157.9		157.7	164.3
Additional paid-in capital	2,127.0		2,122.1	2,229.2
Accumulated other comprehensive loss	(773.9)		(803.4)	(660.4)		(651.0)
Retained earnings	677.9		941.1	1,037.7
Total shareholders’ equity	2,188.9	$ 2,289.1	2,417.5	2,770.8	$ 2,837.6	$ 2,832.2
Total liabilities and shareholders’ equity	$ 8,978.1		$ 9,187.8	$ 9,235.3

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Condensed Balance Sheets Parenthetical - USD ($) shares in Millions, $ in Millions	Jun. 30, 2020	Dec. 31, 2019	Jun. 30, 2019
Assets
Accumulated depreciation	$ 3,484.9	$ 3,268.1	$ 3,000.0
Shareholders' equity:
Common stock, par value	$ 1.00	$ 1.00	$ 1.00
Common stock, authorized (in shares)	240.0	240.0	240.0
Common stock, issued	157.9	157.7	164.3
Common stock, outstanding	157.9	157.7	164.3

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Condensed Statements of Operations - USD ($) shares in Millions, $ in Millions	3 Months Ended				6 Months Ended		51 Months Ended
	Jun. 30, 2020	Mar. 31, 2020	Jun. 30, 2019	Mar. 31, 2019	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020
Income Statement [Abstract]
Sales	$ 1,241.2		$ 1,592.9		$ 2,666.3	$ 3,146.3
Operating expenses:
Cost of goods sold	1,235.7		1,463.7		2,609.9	2,811.0
Selling and administration	99.7		97.0		196.4	204.0
Restructuring charges	1.7	$ 1.7	3.8	$ 4.0	3.4	7.8	$ 243.7
Other operating income	0.1		0.1		0.1	0.2
Operating (loss) income	(95.8)		28.5		(143.3)	123.7
Interest expense	69.4		57.9		132.5	115.3
Interest income	0.2		0.3		0.3	0.5
Non-operating pension income	(4.9)		(4.2)		(9.5)	(8.1)
Other income	0.0		0.0		0.0	11.2
Income (loss) before taxes	(160.1)		(24.9)		(266.0)	28.2
Income tax (benefit) provision	(40.0)		(4.9)		(65.9)	6.5
Net (loss) income	$ (120.1)	$ (80.0)	$ (20.0)	$ 41.7	$ (200.1)	$ 21.7
Net (loss) income per common share:
Basic	$ (0.76)		$ (0.12)		$ (1.27)	$ 0.13
Diluted	$ (0.76)		$ (0.12)		$ (1.27)	$ 0.13
Average common shares outstanding:
Basic	157.9		164.6		157.8	164.8
Diluted	157.9		164.6		157.8	165.7

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Condensed Statements of Comprehensive Income (Loss) - USD ($) $ in Millions	3 Months Ended				6 Months Ended
	Jun. 30, 2020	Mar. 31, 2020	Jun. 30, 2019	Mar. 31, 2019	Jun. 30, 2020	Jun. 30, 2019
Comprehensive Income (Loss), Net of Tax, Attributable to Parent [Abstract]
Net (loss) income	$ (120.1)	$ (80.0)	$ (20.0)	$ 41.7	$ (200.1)	$ 21.7
Other comprehensive income (loss), net of tax:
Foreign currency translation adjustments, net	8.2		3.3		(0.8)	(5.0)
Unrealized gains (losses) on derivative contracts, net	30.0		(12.1)		12.1	(15.4)
Amortization of prior service costs and actuarial losses, net	9.0		5.3		18.2	11.0
Total other comprehensive income (loss), net of tax	47.2	$ (17.7)	(3.5)	$ (5.9)	29.5	(9.4)
Comprehensive (loss) income	$ (72.9)		$ (23.5)		$ (170.6)	$ 12.3

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Condensed Statements of Shareholders' Equity - USD ($) shares in Millions, $ in Millions	Total	Common Stock	Additional Paid-In Capital	Accumulated Other Comprehensive Loss	Retained Earnings
Balance (in shares) at Dec. 31, 2018		165.3
Balance at Dec. 31, 2018	$ 2,832.2	$ 165.3	$ 2,247.4	$ (651.0)	$ 1,070.5
Lease accounting adoption adjustment	11.2	0.0	0.0	0.0	11.2
Net (loss) income	41.7	0.0	0.0	0.0	41.7
Other comprehensive (loss) income	(5.9)	0.0	0.0	(5.9)	0.0
Dividends paid:
Common stock ($0.20 per share)	(33.0)	$ 0.0	0.0	0.0	(33.0)
Common stock repurchased and retired (in shares)		(0.6)
Common stock repurchased and retired	(13.2)	$ (0.6)	(12.6)	0.0	0.0
Common stock issued for:
Stock options exercised (in shares)		0.1
Stock options exercised	1.4	$ 0.1	1.3	0.0	0.0
Other transactions (in shares)		0.1
Other transactions	0.4	$ 0.1	0.3	0.0	0.0
Stock-based compensation	2.8	$ 0.0	2.8	0.0	0.0
Balance (in shares) at Mar. 31, 2019		164.9
Balance at Mar. 31, 2019	2,837.6	$ 164.9	2,239.2	(656.9)	1,090.4
Balance (in shares) at Dec. 31, 2018		165.3
Balance at Dec. 31, 2018	2,832.2	$ 165.3	2,247.4	(651.0)	1,070.5
Net (loss) income	21.7
Other comprehensive (loss) income	$ (9.4)
Common stock issued for:
Stock options exercised (in shares)	0.1
Stock options exercised	$ 1.5
Balance (in shares) at Jun. 30, 2019		164.3
Balance at Jun. 30, 2019	2,770.8	$ 164.3	2,229.2	(660.4)	1,037.7
Balance (in shares) at Mar. 31, 2019		164.9
Balance at Mar. 31, 2019	2,837.6	$ 164.9	2,239.2	(656.9)	1,090.4
Net (loss) income	(20.0)	0.0	0.0	0.0	(20.0)
Other comprehensive (loss) income	(3.5)	0.0	0.0	(3.5)	0.0
Dividends paid:
Common stock ($0.20 per share)	(32.7)	$ 0.0	0.0	0.0	(32.7)
Common stock repurchased and retired (in shares)		(0.6)
Common stock repurchased and retired	(13.5)	$ (0.6)	(12.9)	0.0	0.0
Common stock issued for:
Stock options exercised (in shares)		0.0
Stock options exercised	0.1	$ 0.0	0.1	0.0	0.0
Other transactions (in shares)		0.0
Other transactions	0.9	$ 0.0	0.9	0.0	0.0
Stock-based compensation	1.9	$ 0.0	1.9	0.0	0.0
Balance (in shares) at Jun. 30, 2019		164.3
Balance at Jun. 30, 2019	2,770.8	$ 164.3	2,229.2	(660.4)	1,037.7
Balance (in shares) at Dec. 31, 2019		157.7
Balance at Dec. 31, 2019	2,417.5	$ 157.7	2,122.1	(803.4)	941.1
Net (loss) income	(80.0)	0.0	0.0	0.0	(80.0)
Other comprehensive (loss) income	(17.7)	0.0	0.0	(17.7)	0.0
Dividends paid:
Common stock ($0.20 per share)	(31.5)	$ 0.0	0.0	0.0	(31.5)
Common stock issued for:
Stock options exercised (in shares)		0.0
Stock options exercised	0.7	$ 0.0	0.7	0.0	0.0
Other transactions (in shares)		0.1
Other transactions	2.7	$ 0.1	2.6	0.0	0.0
Stock-based compensation	(2.6)	$ 0.0	(2.6)	0.0	0.0
Balance (in shares) at Mar. 31, 2020		157.8
Balance at Mar. 31, 2020	2,289.1	$ 157.8	2,122.8	(821.1)	829.6
Balance (in shares) at Dec. 31, 2019		157.7
Balance at Dec. 31, 2019	2,417.5	$ 157.7	2,122.1	(803.4)	941.1
Net (loss) income	(200.1)
Other comprehensive (loss) income	$ 29.5
Common stock issued for:
Stock options exercised (in shares)	0.1
Stock options exercised	$ 0.7
Balance (in shares) at Jun. 30, 2020		157.9
Balance at Jun. 30, 2020	2,188.9	$ 157.9	2,127.0	(773.9)	677.9
Balance (in shares) at Mar. 31, 2020		157.8
Balance at Mar. 31, 2020	2,289.1	$ 157.8	2,122.8	(821.1)	829.6
Net (loss) income	(120.1)	0.0	0.0	0.0	(120.1)
Other comprehensive (loss) income	47.2	0.0	0.0	47.2	0.0
Dividends paid:
Common stock ($0.20 per share)	(31.6)	$ 0.0	0.0	0.0	(31.6)
Common stock issued for:
Other transactions (in shares)		0.1
Other transactions	0.4	$ 0.1	0.3	0.0	0.0
Stock-based compensation	3.9	$ 0.0	3.9	0.0	0.0
Balance (in shares) at Jun. 30, 2020		157.9
Balance at Jun. 30, 2020	$ 2,188.9	$ 157.9	$ 2,127.0	$ (773.9)	$ 677.9

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Condensed Statements of Shareholders' Equity Parenthetical - $ / shares	3 Months Ended
	Jun. 30, 2020	Mar. 31, 2020	Jun. 30, 2019	Mar. 31, 2019
Statement of Stockholders' Equity [Abstract]
Dividends Paid, Common Stock, per share	$ 0.20	$ 0.20	$ 0.20	$ 0.20

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Condensed Statements of Cash Flows - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019
Operating Activities
Net (loss) income	$ (200.1)	$ 21.7
Adjustments to reconcile net (loss) income to net cash and cash equivalents provided by (used for) operating activities:
Gain on disposition of non-consolidated affiliate	0.0	(11.2)
Stock-based compensation	4.1	5.3
Depreciation and amortization	283.0	304.3
Deferred income taxes	(52.1)	(16.6)
Qualified pension plan contributions	(1.2)	(0.7)
Qualified pension plan income	(5.9)	(4.6)
Change in:
Receivables	64.1	(70.8)
Income taxes receivable/payable	(15.8)	(30.6)
Inventories	75.7	9.6
Other current assets	(18.3)	2.4
Accounts payable and accrued liabilities	(74.9)	(1.9)
Other assets	0.6	(2.3)
Other noncurrent liabilities	(5.6)	29.4
Other operating activities	1.8	2.1
Net operating activities	55.4	236.1
Investing Activities
Capital expenditures	(166.5)	(191.3)
Payments under ethylene long-term supply contracts	(461.0)	0.0
Payments under other long-term supply contracts	(75.8)	0.0
Proceeds from disposition of non-consolidated affiliate	0.0	20.0
Net investing activities	(703.3)	(171.3)
Long-term debt:
Borrowings	1,163.2	25.0
Repayments	(425.8)	(50.6)
Common stock repurchased and retired	0.0	(26.7)
Stock options exercised	0.5	1.5
Dividends paid	(63.1)	(65.7)
Debt issuance costs	(9.6)	0.0
Net financing activities	665.2	(116.5)
Effect of exchange rate changes on cash and cash equivalents	(0.3)	(0.2)
Net increase (decrease) in cash and cash equivalents	17.0	(51.9)
Cash and cash equivalents, beginning of year	220.9	178.8
Cash and cash equivalents, end of period	237.9	126.9
Cash paid for interest and income taxes:
Interest, net	122.3	108.2
Income taxes, net of refunds	3.1	44.3
Non-cash investing activities:
Decrease in capital expenditures included in accounts payable and accrued liabilities	$ 38.6	$ 10.1

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DESCRIPTION OF BUSINESS

6 Months Ended

Jun. 30, 2020

Organization, Consolidation and Presentation of Financial Statements [Abstract]

DESCRIPTION OF BUSINESS

NOTE 1. DESCRIPTION OF BUSINESS

Olin Corporation (Olin) is a Virginia corporation, incorporated in 1892, having its principal executive offices in Clayton, MO.  We are a manufacturer concentrated in three business segments:  Chlor Alkali Products and Vinyls, Epoxy and Winchester.  The Chlor Alkali Products and Vinyls segment manufactures and sells chlorine and caustic soda, ethylene dichloride (EDC) and vinyl chloride monomer, methyl chloride, methylene chloride, chloroform, carbon tetrachloride, perchloroethylene, trichloroethylene and vinylidene chloride, hydrochloric acid, hydrogen, bleach products and potassium hydroxide.  The Epoxy segment produces and sells a full range of epoxy materials, including allyl chloride, epichlorohydrin, liquid epoxy resins, solid epoxy resins and downstream products such as differentiated epoxy resins and additives. The Winchester segment produces and sells sporting ammunition, reloading components, small caliber military ammunition and components, and industrial cartridges.

We have prepared the condensed financial statements included herein, without audit, pursuant to the rules and regulations of the U.S. Securities and Exchange Commission (SEC). The preparation of the financial statements requires estimates and assumptions that affect amounts reported and disclosed in the financial statements and related notes. In our opinion, these financial statements reflect all adjustments (consisting only of normal accruals), which are necessary to present fairly the results for interim periods. Certain information and footnote disclosures normally included in financial statements prepared in accordance with generally accepted accounting principles have been condensed or omitted pursuant to such rules and regulations; however, we believe that the disclosures are appropriate. We recommend that you read these condensed financial statements in conjunction with the financial statements, accounting policies and the notes thereto and Management’s Discussion and Analysis of Financial Condition and Results of Operations included in our Annual Report on Form 10-K for the year ended December 31, 2019. Certain reclassifications were made to prior year amounts to conform to the 2020 presentation.

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RESTRUCTURING CHARGES

6 Months Ended

Jun. 30, 2020

Restructuring and Related Activities [Abstract]

RESTRUCTURING CHARGES

NOTE 2. RESTRUCTURING CHARGES

On December 11, 2019, we announced that we had made the decision to permanently close a chlor alkali plant with a capacity of 230,000 tons and our vinylidene chloride (VDC) production facility, both in Freeport, TX.  These closures are expected to be completed before the end of 2020.  For both the three and six months ended June 30, 2020, we recorded pretax restructuring charges of $0.5 million for facility exit costs related to these actions. We expect to incur additional restructuring charges through 2024 of approximately $50 million related to these actions.

On December 10, 2018, we announced that we had made the decision to permanently close the ammunition assembly operations at our Winchester facility in Geelong, Australia. Subsequent to the facility’s closure, product for customers in the region will be sourced from Winchester manufacturing facilities located in the United States. For the three and six months ended June 30, 2019, we recorded pretax restructuring charges of $0.2 million and $0.3 million, respectively, for facility exit costs and lease and other contract termination costs related to this action. For the six months ended June 30, 2019, we recorded additional pretax restructuring charges of $1.4 million for employee severance and related benefit costs related to our Winchester operations.

On March 21, 2016, we announced that we had made the decision to close a combined total of 433,000 tons of chlor alkali capacity across three separate locations. Associated with this action, we have permanently closed our Henderson, NV chlor alkali plant with 153,000 tons of capacity and have reconfigured the site to manufacture bleach and distribute caustic soda and hydrochloric acid. Also, the capacity of our Niagara Falls, NY chlor alkali plant has been reduced from 300,000 tons to 240,000 tons and the chlor alkali capacity at our Freeport, TX facility was reduced by 220,000 tons. This 220,000 ton reduction was entirely from diaphragm cell capacity. For the three months ended June 30, 2020 and 2019, we recorded pretax restructuring charges of $1.2 million and $3.6 million, respectively, for facility exit costs, employee severance and related benefit costs and lease and other contract termination costs related to these actions. For the six months ended June 30, 2020 and 2019, we recorded pretax restructuring charges of $2.9 million and $6.1 million, respectively, for facility exit costs, employee severance and related benefit costs and lease and other contract termination costs related to these actions. We expect to incur additional restructuring charges through 2021 of approximately $3 million related to these capacity reductions.

The following table summarizes the 2020 and 2019 activities by major component of these restructuring actions and the remaining balances of accrued restructuring costs as of June 30, 2020 and 2019:

	Employee severance and related benefit costs			Lease and other contract termination costs			Facility exit costs			Total
	($ in millions)
Balance at January 1, 2019	$	1.5		$	6.0		$	0.7		$	8.2
Restructuring charges:
First quarter	1.4			0.1			2.5			4.0
Second quarter	0.4			0.2			3.2			3.8
Amounts utilized	(3.3		)	(1.0		)	(5.5		)	(9.8		)
Balance at June 30, 2019	$	—		$	5.3		$	0.9		$	6.2
Balance at January 1, 2020	$	—		$	3.1		$	—		$	3.1
Restructuring charges:
First quarter	0.1			0.1			1.5			1.7
Second quarter	—			—			1.7			1.7
Amounts utilized	(0.1		)	(0.6		)	(3.2		)	(3.9		)
Balance at June 30, 2020	$	—		$	2.6		$	—		$	2.6

The following table summarizes the cumulative restructuring charges of these restructuring actions by major component through June 30, 2020:

	Chlor Alkali Products and Vinyls				Winchester		Total
	Freeport		Capacity Reductions
	($ in millions)
Write-off of equipment and facility	$	58.9	$	78.1	$	2.6	$	139.6
Employee severance and related benefit costs	—		6.7		2.7		9.4
Facility exit costs	0.5		50.9		0.2		51.6
Employee relocation costs	—		1.7		—		1.7
Lease and other contract termination costs	—		41.0		0.4		41.4
Total cumulative restructuring charges	$	59.4	$	178.4	$	5.9	$	243.7

As of June 30, 2020, we have incurred cash expenditures of $101.5 million and non-cash charges of $139.6 million related to these restructuring actions. The remaining balance of $2.6 million is expected to be paid out through 2021.

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ACCOUNTS RECEIVABLES

6 Months Ended

Jun. 30, 2020

Receivables [Abstract]

ACCOUNTS RECEIVABLE

NOTE 3. ACCOUNTS RECEIVABLES

On July 16, 2019, our existing $250.0 million Receivables Financing Agreement was extended to July 15, 2022 and downsized to $10.0 million with the option to expand (Receivables Financing Agreement). During the six months ended June 30, 2020, we amended the Receivables Financing Agreement to expand the borrowing capacity to $250.0 million and borrowed $240.7 million, net of repayments. The Receivables Financing Agreement includes a minimum borrowing requirement of 50% of the facility limit or available borrowing capacity, whichever is lesser, beginning on October 1, 2020. The administrative agent for our Receivables Financing Agreement is PNC Bank, National Association.  Under the Receivables Financing Agreement, our eligible trade receivables are used for collateralized borrowings and continue to be serviced by us. In addition, the Receivables Financing Agreement incorporates the secured leverage covenant that is contained in the $1,300.0 million senior secured credit facility. As of June 30, 2020, $326.4 million of our trade receivables were pledged as collateral. As of June 30, 2020, we had $240.7 million drawn and zero additional borrowing capacity under the Receivables Financing Agreement as a result of a limitation on our borrowing base. As of December 31, 2019 and June 30, 2019, we had zero and $150.0 million, respectively, drawn under the Receivables Financing Agreement.

Olin also has trade accounts receivable factoring arrangements (AR Facilities) and pursuant to the terms of the AR Facilities, certain of our subsidiaries may sell their accounts receivable up to a maximum of $315.0 million. We will continue to service the outstanding accounts sold.  These receivables qualify for sales treatment under ASC 860 “Transfers and Servicing” and, accordingly, the proceeds are included in net cash provided by operating activities in the condensed statements of cash flows.  The following table summarizes the AR Facilities activity:

	June 30,
	2020			2019
	($ in millions)
Balance at beginning of year	$	63.1		$	132.4
Gross receivables sold	457.5			522.4
Payments received from customers on sold accounts	(458.9		)	(556.1		)
Balance at end of period	$	61.7		$	98.7

The factoring discount paid under the AR Facilities is recorded as interest expense on the condensed statements of operations. The factoring discount was $0.4 million and $1.0 million for the three months ended June 30, 2020 and 2019, respectively, and $1.0 million and $1.5 million for the six months ended June 30, 2020 and 2019, respectively. The agreements are without recourse and therefore no recourse liability had been recorded as of June 30, 2020, December 31, 2019, or June 30, 2019.

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ALLOWANCE FOR DOUBTFUL ACCOUNTS RECEIVABLES

6 Months Ended

Jun. 30, 2020

Accounts Receivable, after Allowance for Credit Loss [Abstract]

ALLOWANCE FOR DOUBTFUL ACCOUNTS RECEIVABLES

NOTE 4. ALLOWANCE FOR DOUBTFUL ACCOUNTS RECEIVABLES

We evaluate the collectibility of financial instruments based on our current estimate of credit losses expected to be incurred over the life of the financial instrument.  The only significant financial instrument which creates exposure to credit losses are customer accounts receivables.  We measure credit losses on uncollected accounts receivable through an allowance for doubtful accounts receivable which is based on a combination of factors including both historical collection experience and reasonable estimates that affect the expected collectibility of the receivable.  These factors include historical bad debt experience, industry conditions of the customer or group of customers, geographical region, credit ratings and general market conditions. We group receivables together for purposes of estimating credit losses when customers have similar risk characteristics; otherwise, the estimation is performed on the individual receivable.

This estimate is periodically adjusted when we become aware of a specific customer’s inability to meet its financial obligations (e.g., bankruptcy filing) or as a result of changes in the overall aging of accounts receivable. While we have a large number of customers that operate in diverse businesses and are geographically dispersed, a general economic downturn in any of the industry segments in which we operate could result in higher than expected defaults, and, therefore, the need to revise estimates for the provision for doubtful accounts could occur.

Allowance for doubtful accounts receivables consisted of the following:

	June 30,
	2020			2019
	($ in millions)
Balance at beginning of year	$	11.9		$	12.9
Provisions charged	0.7			0.9
Write-offs, net of recoveries	—			(2.1		)
Foreign currency translation adjustment	(0.1		)	0.2
Balance at end of period	$	12.5		$	11.9

Provisions charged to operations were $0.5 million and $0.4 million for the three months ended June 30, 2020 and 2019, respectively.

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INVENTORIES

6 Months Ended

Jun. 30, 2020

Inventory Disclosure [Abstract]

INVENTORIES

NOTE 5. INVENTORIES

Inventories consisted of the following:

	June 30, 2020			December 31, 2019			June 30, 2019
	($ in millions)
Supplies	$	81.0		$	80.5		$	74.6
Raw materials	74.3			74.9			73.1
Work in process	114.9			140.3			140.6
Finished goods	392.7			449.5			469.8
	662.9			745.2			758.1
LIFO reserve	(43.8		)	(49.5		)	(59.2		)
Inventories, net	$	619.1		$	695.7		$	698.9

Inventories are valued at the lower of cost and net realizable value. For U.S. inventories, inventory costs are determined principally by the last-in, first-out (LIFO) method of inventory accounting while for international inventories, inventory costs are determined principally by the first-in, first-out (FIFO) method of inventory accounting. Cost for other inventories has been determined principally by the average-cost method (primarily operating supplies, spare parts and maintenance parts). Elements of costs in inventories included raw materials, direct labor and manufacturing overhead. Inventories under the LIFO method are based on annual estimates of quantities and costs as of year-end; therefore, the condensed financial statements at June 30, 2020 reflect certain estimates relating to inventory quantities and costs at December 31, 2020. The replacement cost of our inventories would have been approximately $43.8 million, $49.5 million and $59.2 million higher than reported at June 30, 2020, December 31, 2019 and June 30, 2019, respectively.

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OTHER ASSETS

6 Months Ended

Jun. 30, 2020

Other Assets [Abstract]

OTHER ASSETS

NOTE 6. OTHER ASSETS

Included in other assets were the following:

	June 30, 2020		December 31, 2019		June 30, 2019
	($ in millions)
Supply contracts	$	1,137.9	$	1,112.6	$	1,131.4
Other	41.8		56.5		43.1
Other assets	$	1,179.7	$	1,169.1	$	1,174.5

On January 1, 2019, we sold our 9.1% limited partnership interest in Bay Gas Storage Company, Ltd. (Bay Gas) for $20.0 million. The sale closed on February 7, 2019 which resulted in a gain of $11.2 million for the six months ended June 30, 2019 which was recorded to other income in the condensed statements of operations.

On October 5, 2015 (the Closing Date), we completed the acquisition (the Acquisition) from The Dow Chemical Company (Dow) of its U.S. Chlor Alkali and Vinyl, Global Chlorinated Organics and Global Epoxy businesses (collectively, the Acquired Business). In connection with the Acquisition, Olin and Dow entered into arrangements for the long-term supply of ethylene by Dow to Olin, pursuant to which, among other things, Olin made upfront payments in order to receive ethylene at producer economics and for certain reservation fees and for the option to obtain additional ethylene at producer economics.

On February 27, 2017, we exercised the remaining option to reserve additional ethylene at producer economics from Dow. In connection with the exercise of this option, we also secured a long-term customer arrangement. As a result, an additional payment was made to Dow of $461.0 million during the second quarter of 2020. The original liability was discounted and recorded at present value as of March 31, 2017. The discount amount of $40.9 million was recorded as interest expense from inception through March 31, 2020. For the three months ended June 30, 2019, $4.2 million, and for the six months ended June 30, 2020 and 2019, $4.0 million and $8.2 million, respectively, of interest expense was recorded for accretion on the 2020 payment liability discount.

Amortization expense of $9.4 million for both the three months ended June 30, 2020 and 2019 and $18.8 million for both the six months ended June 30, 2020 and 2019 was recognized within cost of goods sold related to these supply contracts and is

reflected in depreciation and amortization on the condensed statements of cash flows. The long-term supply contracts are monitored for impairment each reporting period.

During the six months ended June 30, 2020, a payment of $75.8 million was made associated with the resolution of a dispute over the allocation to Olin of certain capital costs incurred at our Plaquemine, LA site after the Closing Date of the Acquisition.

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GOODWILL AND INTANGIBLES

6 Months Ended

Jun. 30, 2020

Goodwill and Intangible Assets Disclosure [Abstract]

GOODWILL AND INTANGIBLES

NOTE 7. GOODWILL AND INTANGIBLE ASSETS

Changes in the carrying value of goodwill were as follows:

	Chlor Alkali Products and Vinyls		Epoxy		Total
	($ in millions)
Balance at January 1, 2019	$	1,832.6	$	287.0	$	2,119.6
Foreign currency translation adjustment	—		—		—
Balance at June 30, 2019	$	1,832.6	$	287.0	$	2,119.6
Balance at January 1, 2020	$	1,832.7	$	287.0	2,119.7
Foreign currency translation adjustment	—		—		—
Balance at June 30, 2020	$	1,832.7	$	287.0	$	2,119.7

Goodwill is not amortized, but is reviewed for impairment annually in the fourth quarter and/or when circumstances or other events indicate that impairment may have occurred. Circumstances that are considered as part of the qualitative assessment and could trigger a quantitative impairment test include, but are not limited to:  a significant adverse change in the business climate; a significant adverse legal judgment; adverse cash flow trends; an adverse action or assessment by a government agency; unanticipated competition; sustained decline in our stock price; and a significant restructuring charge within a reporting unit.  As of June 30, 2020, we do not believe it is more likely than not the carrying value exceeded the estimated fair value of our reporting units. During the three months ended March 31, 2020, we identified triggering events associated with a significant overall decrease in our stock price, a significant adverse change in the business climate and a significant reduction in near-term cash flow projections. As a result of these events, we performed a quantitative goodwill impairment test during the first quarter of 2020. We used a discounted cash flow approach to develop the estimated fair value of our reporting units. Based on the aforementioned analysis, the estimated fair value of our reporting units exceeded the carrying value of the reporting units and no impairment charges were recorded.

The discount rate, profitability assumptions and terminal growth rate of our reporting units and the cyclical nature of the chlor alkali industry were the material assumptions utilized in the discounted cash flow model used to estimate the fair value of each reporting unit.  The discount rate reflects a weighted-average cost of capital, which is calculated based on observable market data.  Some of this data (such as the risk free or treasury rate and the pretax cost of debt) are based on the market data at a point in time.  Other data (such as the equity risk premium) are based upon market data over time for a peer group of companies in the chemical manufacturing or distribution industries with a market capitalization premium added, as applicable.

The discounted cash flow analysis requires estimates, assumptions and judgments about future events.  Our analysis uses our internally generated long-range plan.  Our discounted cash flow analysis uses the assumptions in our long-range plan about terminal growth rates, forecasted capital expenditures and changes in future working capital requirements to determine the implied fair value of each reporting unit.  The long-range plan reflects management judgment, supplemented by independent chemical industry analyses which provide multi-year chlor alkali industry operating and pricing forecasts.

We believe the assumptions used in our goodwill impairment analysis are appropriate and result in reasonable estimates of the implied fair value of each reporting unit.  However, given the economic environment and the uncertainties regarding the impact on our business, there can be no assurance that our estimates and assumptions, made for purposes of our goodwill impairment testing, will prove to be an accurate prediction of the future.  In order to evaluate the sensitivity of the fair value calculation on the goodwill impairment test, we applied three separate sensitivities: a hypothetical 10% decrease to the fair value of each reporting unit, a hypothetical decrease of 100-basis points in our terminal growth rate and an increase of 100-basis points in our weighted-average cost of capital to test the fair value calculation. The hypothetical 10% decrease to the fair value of our Chlor Alkali Products and Vinyls reporting unit exceeded the carrying value of the reporting unit, but was not significantly in excess of the carrying value. In all other cases, the estimated fair value of our Epoxy and Chlor Alkali Products

and Vinyls reporting units derived in these sensitivity calculations did not exceed the carrying value of our reporting units.  If our assumptions regarding future performance are not achieved, we may be required to record goodwill impairment charges in future periods.  It is not possible at this time to determine if any such future impairment charge would result or, if it does, whether such charge would be material.

Intangible assets consisted of the following:

	June 30, 2020							December 31, 2019							June 30, 2019
	Gross Amount		Accumulated Amortization			Net		Gross Amount		Accumulated Amortization			Net		Gross Amount		Accumulated Amortization			Net
	($ in millions)
Customers, customer contracts and relationships	$	673.3	$	(285.3	)	$	388.0	$	673.5	$	(260.9	)	$	412.6	$	674.4	$	(236.3	)	$	438.1
Trade name	7.0		(6.7		)	0.3		7.0		(6.0		)	1.0		7.0		(5.3		)	1.7
Acquired technology	85.1		(57.7		)	27.4		85.1		(51.8		)	33.3		85.3		(45.7		)	39.6
Other	1.8		(0.6		)	1.2		1.8		(0.6		)	1.2		1.8		(0.6		)	1.2
Total intangible assets	$	767.2	$	(350.3	)	$	416.9	$	767.4	$	(319.3	)	$	448.1	$	768.5	$	(287.9	)	$	480.6

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EARNINGS PER SHARE

6 Months Ended

Jun. 30, 2020

Earnings Per Share [Abstract]

EARNINGS PER SHARE

NOTE 8. EARNINGS PER SHARE

Basic and diluted net (loss) income per share are computed by dividing net (loss) income by the weighted-average number of common shares outstanding. Diluted net (loss) income per share reflects the dilutive effect of stock-based compensation.

	Three Months Ended June 30,						Six Months Ended June 30,
	2020			2019			2020			2019
Computation of Net (Loss) Income per Share	(In millions, except per share data)
Net (loss) income	$	(120.1	)	$	(20.0	)	$	(200.1	)	$	21.7
Basic shares	157.9			164.6			157.8			164.8
Basic net (loss) income per share	$	(0.76	)	$	(0.12	)	$	(1.27	)	$	0.13
Diluted shares:
Basic shares	157.9			164.6			157.8			164.8
Stock-based compensation	—			—			—			0.9
Diluted shares	157.9			164.6			157.8			165.7
Diluted net (loss) income per share	$	(0.76	)	$	(0.12	)	$	(1.27	)	$	0.13

The computation of dilutive shares does not include 10.3 million and 8.0 million shares for the three months ended June 30, 2020 and 2019, respectively, and 10.3 million and 5.5 million shares for the six months ended June 30, 2020 and 2019, respectively, as their effect would have been anti-dilutive.

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ENVIRONMENTAL

6 Months Ended

Jun. 30, 2020

Environmental Remediation Obligations [Abstract]

ENVIRONMENTAL

NOTE 9. ENVIRONMENTAL

We are party to various government and private environmental actions associated with past manufacturing facilities and former waste disposal sites. Environmental provisions charged to income, which are included in costs of goods sold, were as follows:

	Three Months Ended June 30,					Six Months Ended June 30,
	2020		2019			2020		2019
	($ in millions)
Provisions charged to income	$	2.8	$	22.0		$	5.4	$	23.8
Recoveries for costs incurred and expensed	—		(4.8		)	—		(4.8		)
Environmental expense	$	2.8	$	17.2		$	5.4	$	19.0

Provisions charged to income for both the three and six months ended June 30, 2019 include a $20.0 million increase in costs at a former manufacturing site resulting from revised remediation estimates as a result of agency action and $4.8 million of recoveries associated with resolving outstanding third party claims against the proceeds from a 2018 environmental insurance settlement.  The condensed balance sheets included reserves for future environmental expenditures to investigate and remediate known sites amounting to $138.6 million, $139.0 million and $144.4 million at June 30, 2020, December 31, 2019 and June 30, 2019, respectively, of which $121.6 million, $122.0 million and $127.4 million, respectively, were classified as other noncurrent liabilities.

Environmental exposures are difficult to assess for numerous reasons, including the identification of new sites, developments at sites resulting from investigatory studies, advances in technology, changes in environmental laws and regulations and their application, changes in regulatory authorities, the scarcity of reliable data pertaining to identified sites, the difficulty in assessing the involvement and financial capability of other Potentially Responsible Parties (PRPs), our ability to obtain contributions from other parties and the lengthy time periods over which site remediation occurs. It is possible that some of these matters (the outcomes of which are subject to various uncertainties) may be resolved unfavorably to us, which could materially adversely affect our financial position or results of operations.

In connection with the October 5, 2015 acquisition of Dow’s U.S. Chlor Alkali and Vinyl, Global Chlorinated Organics and Global Epoxy businesses, the prior owner of the businesses retained liabilities relating to releases of hazardous materials and violations of environmental law to the extent arising prior to October 5, 2015.

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COMMITMENTS AND CONTINGENCIES

6 Months Ended

Jun. 30, 2020

Commitments and Contingencies Disclosure [Abstract]

COMMITMENTS AND CONTINGENCIES

NOTE 10. COMMITMENTS AND CONTINGENCIES

Olin and Oxy Vinyls, L.P. (Oxy) have a long-term chlorine supply agreement, which is the subject of a pricing dispute. The dispute is pending in the United States District Court for the Southern District of Texas, and we currently anticipate trial will be scheduled for fourth quarter 2020. Any additional losses related to this contract dispute are not currently estimable because of unresolved questions of fact and law but, if resolved unfavorably to Olin, they could have a material adverse effect on our financial position, cash flows or results of operations.

Olin, K.A. Steel Chemicals (a wholly owned subsidiary of Olin) and other caustic soda producers were named as defendants in six purported class action civil lawsuits filed March 22, 25 and 26, 2019 and April 12, 2019 in the U.S. District Court for the Western District of New York on behalf of the respective named plaintiffs and a putative class comprised of all persons and entities who purchased caustic soda in the U.S. directly from one or more of the defendants, their parents, predecessors, subsidiaries or affiliates at any time between October 1, 2015 and the present.  Olin, K.A. Steel Chemicals and other caustic soda producers were also named as defendants in two purported class action civil lawsuits filed July 25 and 29, 2019 in the U.S. District Court for the Western District of New York on behalf of the respective named plaintiffs and a putative class comprised of all persons and entities who purchased caustic soda in the U.S. indirectly from distributors at any time between October 1, 2015 and the present.  The other defendants named in the lawsuits are Occidental Petroleum Corporation, Occidental Chemical Corporation d/b/a OxyChem, Westlake Chemical Corporation, Shin-Etsu Chemical Co., Ltd., Shintech Incorporated, Formosa Plastics Corporation, and Formosa Plastics Corporation, U.S.A. The lawsuits allege the defendants conspired to fix, raise, maintain and stabilize the price of caustic soda, restrict domestic (U.S.) supply of caustic soda and allocate caustic soda customers. Plaintiffs seek an unspecified amount of damages and injunctive relief. We believe we have meritorious legal positions and will continue to represent our interests vigorously in this matter. Any losses related to this matter are not currently estimable because of unresolved questions of fact and law, but if resolved unfavorably to Olin, could have a material adverse effect on our financial position, cash flows or results of operations.

We, and our subsidiaries, are defendants in various other legal actions (including proceedings based on alleged exposures to asbestos) incidental to our past and current business activities. As of June 30, 2020, December 31, 2019 and June 30, 2019, our condensed balance sheets included accrued liabilities for these other legal actions of $12.4 million, $12.4 million and $14.0 million, respectively. These liabilities do not include costs associated with legal representation. Based on our analysis, and considering the inherent uncertainties associated with litigation, we do not believe that it is reasonably possible that these other legal actions will materially adversely affect our financial position, cash flows or results of operations. In connection with the October 5, 2015 acquisition of Dow’s U.S. Chlor Alkali and Vinyl, Global Chlorinated Organics and Global Epoxy businesses, the prior owner of the businesses retained liabilities related to litigation to the extent arising prior to October 5, 2015.

During the ordinary course of our business, contingencies arise resulting from an existing condition, situation or set of circumstances involving an uncertainty as to the realization of a possible gain contingency. In certain instances such as environmental projects, we are responsible for managing the cleanup and remediation of an environmental site. There exists the possibility of recovering a portion of these costs from other parties. We account for gain contingencies in accordance with the provisions of ASC 450 “Contingencies” and, therefore, do not record gain contingencies and recognize income until it is earned and realizable.

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SHAREHOLDERS' EQUITY

6 Months Ended

Jun. 30, 2020

Stockholders' Equity Note [Abstract]

SHAREHOLDERS' EQUITY

NOTE 11. SHAREHOLDERS’ EQUITY

On April 26, 2018, our board of directors authorized a share repurchase program for the purchase of shares of common stock at an aggregate price of up to $500.0 million.  This program will terminate upon the purchase of $500.0 million of our common stock.

There were no shares repurchased for the six months ended June 30, 2020. For the six months ended June 30, 2019, 1.2 million shares were repurchased and retired at a cost of $26.7 million. As of June 30, 2020, we had repurchased a total of $195.9 million of our common stock, representing 10.1 million shares, and $304.1 million of common stock remained authorized to be repurchased.

We issued less than 0.1 million and 0.1 million shares representing stock options exercised for the six months ended June 30, 2020 and 2019, respectively, with a total value of $0.7 million and $1.5 million, respectively.

The following table represents the activity included in accumulated other comprehensive loss:

	Foreign Currency Translation Adjustment (net of taxes)			Unrealized (Losses) Gains on Derivative Contracts (net of taxes)			Pension and Other Postretirement Benefits (net of taxes)			Accumulated Other Comprehensive Loss
	($ in millions)
Balance at January 1, 2019	$	0.7		$	1.8		$	(653.5	)	$	(651.0	)
Unrealized (losses) gains:
First quarter	(8.3		)	(6.6		)	—			(14.9		)
Second quarter	3.3			(22.2		)	—			(18.9		)
Reclassification adjustments of losses into income:
First quarter	—			2.2			7.4			9.6
Second quarter	—			6.3			7.1			13.4
Tax benefit (provision):
First quarter	—			1.1			(1.7		)	(0.6		)
Second quarter	—			3.8			(1.8		)	2.0
Net change	(5.0		)	(15.4		)	11.0			(9.4		)
Balance at June 30, 2019	$	(4.3	)	$	(13.6	)	$	(642.5	)	$	(660.4	)
Balance at January 1, 2020	$	(8.4	)	$	(13.6	)	$	(781.4	)	$	(803.4	)
Unrealized (losses) gains:
First quarter	(9.0		)	(35.1		)	—			(44.1		)
Second quarter	8.2			29.9			—			38.1
Reclassification adjustments of losses into income:
First quarter	—			11.6			11.9			23.5
Second quarter	—			9.3			11.6			20.9
Tax benefit (provision):
First quarter	—			5.6			(2.7		)	2.9
Second quarter	—			(9.2		)	(2.6		)	(11.8		)
Net change	(0.8		)	12.1			18.2			29.5
Balance at June 30, 2020	$	(9.2	)	$	(1.5	)	$	(763.2	)	$	(773.9	)

Net (loss) income, interest expense and cost of goods sold included reclassification adjustments for realized gains and losses on derivative contracts from accumulated other comprehensive loss.

Net (loss) income and non-operating pension income included the amortization of prior service costs and actuarial losses from accumulated other comprehensive loss.

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SEGMENT INFORMATION

6 Months Ended

Jun. 30, 2020

Segment Reporting [Abstract]

SEGMENT INFORMATION

NOTE 12. SEGMENT INFORMATION

We define segment results as income (loss) before interest expense, interest income, other operating income (expense), non-operating pension income, other income and income taxes. We have three operating segments: Chlor Alkali Products and Vinyls, Epoxy and Winchester. The three operating segments reflect the organization used by our management for purposes of allocating resources and assessing performance. Chlorine used in our Epoxy segment is transferred at cost from the Chlor Alkali Products and Vinyls segment. Sales and profits are recognized in the Chlor Alkali Products and Vinyls segment for all caustic soda generated and sold by Olin. Sales are attributed to geographic areas based on customer location.

	Three Months Ended June 30,						Six Months Ended June 30,
	2020			2019			2020			2019
Sales:	($ in millions)
Chlor Alkali Products and Vinyls	$	651.2		$	909.2		$	1,411.1		$	1,781.4
Epoxy	397.4			518.8			874.6			1,042.8
Winchester	192.6			164.9			380.6			322.1
Total sales	$	1,241.2		$	1,592.9		$	2,666.3		$	3,146.3
Income (loss) before taxes:
Chlor Alkali Products and Vinyls	$	(57.0	)	$	70.7		$	(91.3	)	$	191.1
Epoxy	(13.0		)	3.9			(1.3		)	14.4
Winchester	16.0			10.1			26.5			19.2
Corporate/other:
Environmental expense	(2.8		)	(17.2		)	(5.4		)	(19.0		)
Other corporate and unallocated costs	(37.4		)	(35.3		)	(68.5		)	(74.4		)
Restructuring charges	(1.7		)	(3.8		)	(3.4		)	(7.8		)
Other operating income	0.1			0.1			0.1			0.2
Interest expense	(69.4		)	(57.9		)	(132.5		)	(115.3		)
Interest income	0.2			0.3			0.3			0.5
Non-operating pension income	4.9			4.2			9.5			8.1
Other income	—			—			—			11.2
Income (loss) before taxes	$	(160.1	)	$	(24.9	)	$	(266.0	)	$	28.2

Environmental expense for both the three and six months ended June 30, 2019 included $4.8 million of an environmental insurance-related settlement gain.

For the six months ended June 30, 2019, other income included a gain of $11.2 million on the sale of our equity interest in a non-consolidated affiliate.

	Three Months Ended June 30,				Six Months Ended June 30,
	2020		2019		2020		2019
Sales by geography:	($ in millions)
Chlor Alkali Products and Vinyls
United States	$	450.3	$	601.0	$	984.2	$	1,205.0
Europe	26.8		39.1		57.0		77.7
Other foreign	174.1		269.1		369.9		498.7
Total Chlor Alkali Products and Vinyls	651.2		909.2		1,411.1		1,781.4
Epoxy
United States	122.5		175.4		281.3		339.5
Europe	140.4		222.6		334.8		458.0
Other foreign	134.5		120.8		258.5		245.3
Total Epoxy	397.4		518.8		874.6		1,042.8
Winchester
United States	178.6		146.8		352.7		288.1
Europe	2.3		2.3		4.8		5.1
Other foreign	11.7		15.8		23.1		28.9
Total Winchester	192.6		164.9		380.6		322.1
Total
United States	751.4		923.2		1,618.2		1,832.6
Europe	169.5		264.0		396.6		540.8
Other foreign	320.3		405.7		651.5		772.9
Total sales	$	1,241.2	$	1,592.9	$	2,666.3	$	3,146.3

	Three Months Ended June 30,				Six Months Ended June 30,
	2020		2019		2020		2019
Sales by product line:	($ in millions)
Chlor Alkali Products and Vinyls
Caustic soda	$	320.2	$	461.0	$	680.4	$	923.1
Chlorine, chlorine-derivatives and other co-products	331.0		448.2		730.7		858.3
Total Chlor Alkali Products and Vinyls	651.2		909.2		1,411.1		1,781.4
Epoxy
Aromatics and allylics	167.0		234.8		384.4		478.6
Epoxy resins	230.4		284.0		490.2		564.2
Total Epoxy	397.4		518.8		874.6		1,042.8
Winchester
Commercial	135.6		103.6		262.7		210.0
Military and law enforcement	57.0		61.3		117.9		112.1
Total Winchester	192.6		164.9		380.6		322.1
Total sales	$	1,241.2	$	1,592.9	$	2,666.3	$	3,146.3

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STOCK-BASED COMPENSATION

6 Months Ended

Jun. 30, 2020

Share-based Payment Arrangement [Abstract]

STOCK-BASED COMPENSATION

NOTE 13. STOCK-BASED COMPENSATION

Stock-based compensation granted includes stock options, performance stock awards, restricted stock awards and deferred directors’ compensation. Stock-based compensation expense (benefit) was as follows:

	Three Months Ended June 30,						Six Months Ended June 30,
	2020			2019			2020			2019
	($ in millions)
Stock-based compensation	$	4.3		$	(1.3	)	$	6.3		$	4.3
Mark-to-market adjustments	(0.1		)	(0.9		)	(3.1		)	0.4
Total expense (benefit)	$	4.2		$	(2.2	)	$	3.2		$	4.7

The fair value of each stock option granted, which typically vests ratably over three years, but not less than one year, was estimated on the date of grant, using the Black-Scholes option-pricing model with the following weighted-average assumptions:

Grant date	2020			2019
Dividend yield	4.60		%	3.05		%
Risk-free interest rate	1.44		%	2.51		%
Expected volatility	36		%	34		%
Expected life (years)	6.0			6.0
Weighted-average grant fair value (per option)	$	3.64		$	6.76
Weighted-average exercise price	$	17.33		$	26.26
Shares granted	2,665,700			1,575,900

Dividend yield was based on our current dividend yield as of the option grant date. Risk-free interest rate was based on zero coupon U.S. Treasury securities rates for the expected life of the options. Expected volatility was based on our historical stock price movements, as we believe that historical experience is the best available indicator of the expected volatility. Expected life of the option grant was based on historical exercise and cancellation patterns, as we believe that historical experience is the best estimate of future exercise patterns.

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DEBT

6 Months Ended

Jun. 30, 2020

Debt Disclosure [Abstract]

DEBT

NOTE 14. DEBT

On May 19, 2020, Olin issued $500.0 million aggregate principal amount of 9.50% senior notes due June 1, 2025 (2025 Notes). The 2025 Notes were issued at 99.5% of par value, the discount from which is included within long-term debt in the condensed balance sheets. Interest on the 2025 Notes is payable semi-annually beginning on December 1, 2020. Proceeds from the 2025 Notes were used for general corporate purposes.

On May 8, 2020, we entered into a $1,300.0 million senior secured credit facility (Senior Secured Credit Facility) that amended our existing five-year, $2,000.0 million senior credit facility. The Senior Secured Credit Facility includes a senior secured delayed-draw term loan facility with aggregate commitments of $500.0 million (Delayed Draw Term Loan Facility) and a senior secured revolving credit facility with aggregate commitments in an amount equal to $800.0 million (Senior Revolving Credit Facility). The maturity date for the Senior Secured Credit Facility is July 16, 2024. The amendment modified the financial covenants of the Senior Secured Credit Facility to be less restrictive and expanded the permitted use of proceeds of the Delayed Draw Term Loan Facility to include general corporate purposes.

The amendment also requires that the obligations under the Senior Secured Credit Facility be guaranteed by certain of our domestic subsidiaries, which are also guarantors of Olin’s outstanding notes, with the exception of the $200.0 million senior notes due 2022. The obligations under the Senior Secured Credit Facility are also secured by liens on substantially all of Olin’s and the subsidiary guarantors’ personal property (Collateral), other than certain principal properties and capital stock of subsidiaries, and subject to certain other exceptions. The amendment provides that substantially all guarantees under the Senior Secured Credit Facility and liens on the Collateral will be released automatically when our net leverage ratio is below 3.50 to 1.00 for two consecutive fiscal quarters.

The Delayed Draw Term Loan Facility is available on a delayed basis in up to three draws to be made on or prior to November 29, 2020. The Delayed Draw Term Loan Facility includes principal amortization amounts payable beginning the quarter ending after the facility is fully drawn at a rate of 5.0% per annum for the first two years, increasing to 7.5% per annum

for the following year and to 10.0% per annum for the last two years. The Senior Revolving Credit Facility includes a $100.0 million letter of credit subfacility. At June 30, 2020, we had $799.6 million available under our $800.0 million Senior Revolving Credit Facility because we had issued $0.4 million of letters of credit. 

For both the three and six months ended June 30, 2020, we recognized interest expense of $1.6 million for the write-off of unamortized deferred debt issuance costs related to the reduction of commitments under the Senior Secured Credit Facility. For the six months ended June 30, 2020, we paid debt issuance costs of $9.6 million for the issuance of the 2025 Notes and amendments to our Senior Secured Credit Facility and Receivables Financing Agreement.

Under the Senior Secured Credit Facility, we may select various floating rate borrowing options. The actual interest rate paid on borrowings under the Senior Secured Credit Facility is based on a pricing grid which is dependent upon the net leverage ratio as calculated under the terms of the applicable facility for the prior fiscal quarter.  The Senior Secured Credit Facility includes various customary restrictive covenants, including restrictions related to the ratio of secured debt to earnings before interest expense, taxes, depreciation and amortization (secured leverage ratio) and the ratio of earnings before interest expense, taxes, depreciation and amortization to interest expense (coverage ratio).  The calculation of secured debt in our secured leverage ratio excludes borrowings under the Receivables Financing Agreement, up to a maximum of $250.0 million. As of June 30, 2020, the only secured borrowings included in the secured leverage ratio were $153.0 million for our Go Zone and Recovery Zone bonds. Compliance with these covenants is determined quarterly. We were in compliance with all covenants and restrictions under all our outstanding credit agreements as of June 30, 2020, and no event of default had occurred that would permit the lenders under our outstanding credit agreements to accelerate the debt if not cured. In the future, our ability to generate sufficient operating cash flows, among other factors, will determine the amounts available to be borrowed under these facilities. As a result of our restrictive covenant related to the secured leverage ratio, the maximum additional borrowings available to us could be limited in the future.  The limitation, if an amendment or waiver from our lenders is not obtained, could restrict our ability to borrow the maximum amounts available under the Senior Revolving Credit Facility and the Receivables Financing Agreement.  As of June 30, 2020, there were no covenants or other restrictions that limited our ability to borrow.

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CONTRIBUTING EMPLOYEE OWNERSHIP PLAN

6 Months Ended

Jun. 30, 2020

Retirement Benefits [Abstract]

CONTRIBUTING EMPLOYEE OWNERSHIP PLAN

NOTE 15. CONTRIBUTING EMPLOYEE OWNERSHIP PLAN

The Contributing Employee Ownership Plan (CEOP) is a defined contribution plan available to essentially all domestic employees.  We provide a contribution to an individual retirement contribution account maintained with the CEOP equal to an amount of between 5.0% and 7.5% of the employee’s eligible compensation.  The defined contribution plan expense for the three months ended June 30, 2020 and 2019 was $6.8 million and $6.9 million, respectively, and for the six months ended June 30, 2020 and 2019 was $15.0 million and $16.3 million, respectively.

Company matching contributions are invested in the same investment allocation as the employee’s contribution.  Our matching contributions for eligible employees for the three months ended June 30, 2020 and 2019 were $0.7 million and $4.0 million, respectively, and for the six months ended June 30, 2020 and 2019 were $1.5 million and $7.9 million, respectively. Effective January 1, 2020, we suspended the match on all salaried and non-bargaining hourly employees’ contributions, and moved to a discretionary contribution model with contributions contingent upon company-wide financial performance.

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PENSION PLANS AND RETIREMENT BENEFITS

6 Months Ended

Jun. 30, 2020

Retirement Benefits [Abstract]

PENSION PLANS AND RETIREMENT BENEFITS

NOTE 16. PENSION PLANS AND RETIREMENT BENEFITS

We sponsor domestic and foreign defined benefit pension plans for eligible employees and retirees. Most of our domestic employees participate in defined contribution plans.  However, a portion of our bargaining hourly employees continue to participate in our domestic qualified defined benefit pension plans under a flat-benefit formula. Our funding policy for the qualified defined benefit pension plans is consistent with the requirements of federal laws and regulations. Our foreign subsidiaries maintain pension and other benefit plans, which are consistent with local statutory practices.

Our domestic qualified defined benefit pension plan provides that if, within three years following a change of control of Olin, any corporate action is taken or filing made in contemplation of, among other things, a plan termination or merger or other transfer of assets or liabilities of the plan, and such termination, merger, or transfer thereafter takes place, plan benefits would automatically be increased for affected participants (and retired participants) to absorb any plan surplus (subject to applicable collective bargaining requirements).

We also provide certain postretirement healthcare (medical) and life insurance benefits for eligible active and retired domestic employees. The healthcare plans are contributory with participants’ contributions adjusted annually based on medical rates of inflation and plan experience.

	Pension Benefits						Other Postretirement Benefits
	Three Months Ended June 30,						Three Months Ended June 30,
	2020			2019			2020		2019
Components of Net Periodic Benefit (Income) Cost	($ in millions)
Service cost	$	2.7		$	2.7		$	0.4	$	0.3
Interest cost	18.8			23.7			0.3		0.5
Expected return on plans’ assets	(35.6		)	(35.5		)	—		—
Recognized actuarial loss	11.1			6.6			0.5		0.5
Net periodic benefit (income) cost	$	(3.0	)	$	(2.5	)	$	1.2	$	1.3

	Pension Benefits						Other Postretirement Benefits
	Six Months Ended June 30,						Six Months Ended June 30,
	2020			2019			2020		2019
Components of Net Periodic Benefit (Income) Cost	($ in millions)
Service cost	$	5.7		$	5.8		$	0.7	$	0.6
Interest cost	37.5			47.3			0.7		0.9
Expected return on plans’ assets	(71.2		)	(70.8		)	—		—
Recognized actuarial loss	22.3			13.4			1.2		1.1
Net periodic benefit (income) cost	$	(5.7	)	$	(4.3	)	$	2.6	$	2.6

We made cash contributions to our international qualified defined benefit pension plans of $1.2 million and $0.7 million for the six months ended June 30, 2020 and 2019, respectively.

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INCOME TAXES

6 Months Ended

Jun. 30, 2020

Income Tax Disclosure [Abstract]

INCOME TAXES

NOTE 17. INCOME TAXES

The effective tax rate for the three months ended June 30, 2020 of 25.0% was higher than the 21% U.S. federal statutory rate primarily due to state taxes, foreign income taxes and favorable permanent salt depletion deductions, partially offset by foreign income inclusions and a net increase in the valuation allowance related to losses in foreign jurisdictions. The effective tax rate for the three months ended June 30, 2019 included a benefit associated with stock-based compensation, an expense associated with prior year tax positions and an expense from a change in tax contingencies. These factors resulted in a net $0.6 million tax expense. After giving consideration to these items, the effective tax rate for the three months ended June 30, 2019 of 22.1% was higher than the 21% U.S. federal statutory rate, primarily due to state and foreign income taxes, foreign income inclusions and a net increase in the valuation allowance related to losses in foreign jurisdictions, partially offset by favorable permanent salt depletion deductions.

The effective tax rate for the six months ended June 30, 2020 included an expense associated with stock-based compensation, an expense associated with prior year tax positions and an expense from a change in tax contingencies. These factors resulted in a net $1.0 million tax expense. After giving consideration to these items, the effective tax rate for the six months ended June 30, 2020 of 25.2% was higher than the 21% U.S. federal statutory rate primarily due to state taxes, foreign income taxes and favorable permanent salt depletion deductions, partially offset by foreign income inclusions and a net increase in the valuation allowance related to losses in foreign jurisdictions. The effective tax rate for the six months ended June 30, 2019 included a benefit associated with stock-based compensation, a benefit associated with prior year tax positions, a benefit from a net decrease in the valuation allowance related to state deferred tax assets and an expense from a change in tax contingencies. These factors resulted in a net $0.3 million tax benefit. After giving consideration to these items, the effective tax rate for the six months ended June 30, 2019 of 24.1% was higher than the 21% U.S. federal statutory rate, primarily due to state and foreign income taxes, foreign income inclusions and a net increase in the valuation allowance related to losses in foreign jurisdictions, partially offset by favorable permanent salt depletion deductions.   

As of June 30, 2020, we had $22.0 million of gross unrecognized tax benefits, which would have a net $21.8 million impact on the effective tax rate, if recognized. As of June 30, 2019, we had $35.0 million of gross unrecognized tax benefits, of which $34.1 million would have impacted the effective tax rate, if recognized. The amount of unrecognized tax benefits was as follows:

	June 30,
	2020			2019
	($ in millions)
Balance at beginning of year	$	22.8		$	33.8
Decreases for prior year tax positions	(1.8		)	—
Increases for current year tax positions	1.0			1.2
Balance at end of period	$	22.0		$	35.0

As of June 30, 2020, we believe it is reasonably possible that our total amount of unrecognized tax benefits will decrease by approximately $3.8 million over the next twelve months. The anticipated reduction primarily relates to settlements with taxing authorities and the expiration of federal, state and foreign statutes of limitation.

We operate globally and file income tax returns in numerous jurisdictions. Our tax returns are subject to examination by various federal, state and local tax authorities. Our 2016 U.S. federal income tax return is currently under examination by the Internal Revenue Service. Additionally, examinations are ongoing in various states and foreign jurisdictions. We believe we have adequately provided for all tax positions; however, amounts asserted by taxing authorities could be greater than our accrued position. For our primary tax jurisdictions, the tax years that remain subject to examination are as follows:

	Tax Years
U.S. federal income tax	2016 - 2019
U.S. state income tax	2006 - 2019
Canadian federal income tax	2012 - 2019
Brazil	2014 - 2019
Germany	2015 - 2019
China	2014 - 2019
The Netherlands	2014 - 2019

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DERIVATIVE FINANCIAL INSTRUMENTS

6 Months Ended

Jun. 30, 2020

Derivative Instruments and Hedging Activities Disclosure [Abstract]

DERIVATIVE FINANCIAL INSTRUMENTS

NOTE 18. DERIVATIVE FINANCIAL INSTRUMENTS

We are exposed to market risk in the normal course of our business operations due to our purchases of certain commodities, our ongoing investing and financing activities and our operations that use foreign currencies. The risk of loss can be assessed from the perspective of adverse changes in fair values, cash flows and future earnings. We have established policies and procedures governing our management of market risks and the use of financial instruments to manage exposure to such risks. ASC 815 “Derivatives and Hedging” (ASC 815) requires an entity to recognize all derivatives as either assets or liabilities in the condensed balance sheets and measure those instruments at fair value. In accordance with ASC 815, we designate derivative contracts as cash flow hedges of forecasted purchases of commodities and forecasted interest payments related to variable-rate borrowings and designate certain interest rate swaps as fair value hedges of fixed-rate borrowings. We do not enter into any derivative instruments for trading or speculative purposes.

Energy costs, including electricity and natural gas, and certain raw materials used in our production processes are subject to price volatility. Depending on market conditions, we may enter into futures contracts, forward contracts, commodity swaps and put and call option contracts in order to reduce the impact of commodity price fluctuations. The majority of our commodity derivatives expire within one year.

We actively manage currency exposures that are associated with net monetary asset positions, currency purchases and sales commitments denominated in foreign currencies and foreign currency denominated assets and liabilities created in the normal course of business. We enter into forward sales and purchase contracts to manage currency risk to offset our net exposures, by currency, related to the foreign currency denominated monetary assets and liabilities of our operations. At June 30, 2020, we had outstanding forward contracts to buy foreign currency with a notional value of $176.6 million and to sell foreign currency with a notional value of $111.7 million. All of the currency derivatives expire within one year and are for U.S. dollar (USD) equivalents. The counterparties to the forward contracts are large financial institutions; however, the risk of loss to us in the event of nonperformance by a counterparty could be significant to our financial position or results of operations. At December 31, 2019, we had outstanding forward contracts to buy foreign currency with a notional value of $140.6 million and to sell foreign currency with a notional value of $99.2 million. At June 30, 2019, we had outstanding forward contracts to buy foreign currency with a notional value of $130.8 million and to sell foreign currency with a notional value of $120.5 million.

Cash Flow Hedges

For derivative instruments that are designated and qualify as a cash flow hedge, the change in fair value of the derivative is recognized as a component of other comprehensive income (loss) until the hedged item is recognized in earnings.

We had the following notional amounts of outstanding commodity contracts that were entered into to hedge forecasted purchases:

	June 30, 2020		December 31, 2019		June 30, 2019
	($ in millions)
Natural gas	$	59.3	$	62.9	$	67.1
Ethane	48.2		51.5		53.4
Metals	117.6		60.2		65.6
Total notional	$	225.1	$	174.6	$	186.1

As of June 30, 2020, the counterparties to these commodity contracts were Wells Fargo Bank, N.A., Citibank, N.A., JPMorgan Chase Bank, National Association and Bank of America Corporation, all of which are major financial institutions.

We use cash flow hedges for certain raw material and energy costs such as copper, zinc, lead, ethane, electricity and natural gas to provide a measure of stability in managing our exposure to price fluctuations associated with forecasted purchases of raw materials and energy used in our manufacturing process. At June 30, 2020, we had open derivative contract positions through 2027. If all open futures contracts had been settled on June 30, 2020, we would have recognized a pretax loss of $1.9 million.

If commodity prices were to remain at June 30, 2020 levels, approximately $3.1 million of deferred losses, net of tax, would be reclassified into earnings during the next twelve months. The actual effect on earnings will be dependent on actual commodity prices when the forecasted transactions occur.

We use interest rate swaps as a means of minimizing cash flow fluctuations that may arise from volatility in interest rates of our variable-rate borrowings. In April 2016, we entered into three tranches of forward starting interest rate swaps whereby we agreed to pay fixed rates to the counterparties who, in turn, pay us floating rates on $1,100.0 million, $900.0 million, and $400.0 million of our underlying floating-rate debt obligations. Each tranche’s term length was for twelve months beginning on December 31, 2016, 2017 and 2018, respectively. We designated the swaps as cash flow hedges of the risk of changes in interest payments associated with our variable-rate borrowings. In July 2019, we terminated the remaining interest rate swap. For the three and six months ended June 30, 2019, $1.2 million and $2.5 million, respectively, of income was recorded to interest expense on the accompanying condensed statements of operations related to these swap agreements.

Fair Value Hedges

We use interest rate swaps as a means of managing interest expense and floating interest rate exposure to optimal levels. For derivative instruments that are designated and qualify as a fair value hedge, the gain or loss on the derivative as well as the offsetting loss or gain on the hedged item attributable to the hedged risk are recognized in current earnings. We include the gain or loss on the hedged items (fixed-rate borrowings) in the same line item, interest expense, as the offsetting loss or gain on the related interest rate swaps. As of June 30, 2019, the total notional amounts of our interest rate swaps designated as fair value hedges was $500.0 million.

In April 2016, we entered into interest rate swaps on $250.0 million of our underlying fixed-rate debt obligations, whereby we agreed to pay variable rates to the counterparties who, in turn, pay us fixed rates.  In October 2016, we entered into interest rate swaps on an additional $250.0 million of our underlying fixed-rate debt obligations, whereby we agreed to pay variable rates to the counterparties who, in turn, pay us fixed rates.  We designated the April 2016 and October 2016 interest rate swap agreements as fair value hedges of the risk of changes in the value of fixed-rate debt due to changes in interest rates for a portion of our fixed-rate borrowings. In August 2019, we terminated the April 2016 and October 2016 interest rate swaps. For the three and six months ended June 30, 2019, $1.0 million and $1.7 million, respectively, of expense was recorded to interest expense on the accompanying condensed statements of operations related to these swap agreements.

Financial Statement Impacts

We present our derivative assets and liabilities in our condensed balance sheets on a net basis whenever we have a legally enforceable master netting agreement with the counterparty to our derivative contracts. We use these agreements to manage and substantially reduce our potential counterparty credit risk.

The following table summarizes the location and fair value of the derivative instruments on our condensed balance sheets. The table disaggregates our net derivative assets and liabilities into gross components on a contract-by-contract basis before giving effect to master netting arrangements:

	June 30, 2020			December 31, 2019			June 30, 2019
	($ in millions)
Asset derivatives:
Other current assets
Derivatives designated as hedging instruments:
Interest rate contracts - gains	$	—		$	—		$	1.7
Commodity contracts - gains	5.1			1.8			0.5
Commodity contracts - losses	(2.8		)	(0.5		)	(0.3		)
Derivatives not designated as hedging instruments:
Foreign exchange contracts - gains	5.3			1.1			0.4
Foreign exchange contracts - losses	(2.9		)	(0.5		)	(0.3		)
Total other current assets	4.7			1.9			2.0
Other assets
Derivatives designated as hedging instruments:
Commodity contracts - gains	3.0			0.8			0.9
Commodity contracts - losses	(0.7		)	(0.1		)	(0.4		)
Total other assets	2.3			0.7			0.5
Total asset derivatives(1)	$	7.0		$	2.6		$	2.5
Liability derivatives:
Accrued liabilities
Derivatives designated as hedging instruments:
Commodity contracts - losses	$	8.8		$	18.0		$	18.8
Commodity contracts - gains	(2.4		)	(0.2		)	(0.5		)
Derivatives not designated as hedging instruments:
Foreign exchange contracts - losses	1.3			1.4			0.9
Foreign exchange contracts - gains	(0.1		)	(0.2		)	(0.2		)
Total accrued liabilities	7.6			19.0			19.0
Other liabilities
Derivatives designated as hedging instruments:
Interest rate contracts - losses	—			—			9.0
Commodity contracts - losses	0.2			1.8			1.7
Commodity contracts - gains	(0.1		)	—			—
Total other liabilities	0.1			1.8			10.7
Total liability derivatives(1)	$	7.7		$	20.8		$	29.7

(1) Does not include the impact of cash collateral received from or provided to counterparties.

The following table summarizes the effects of derivative instruments on our condensed statements of operations:

		Amount of Gain (Loss)
		Three Months Ended June 30,						Six Months Ended June 30,
	Location of Gain (Loss)	2020			2019			2020			2019
Derivatives – Cash Flow Hedges		($ in millions)
Recognized in other comprehensive loss:
Commodity contracts	———	$	29.9		$	(21.5	)	$	(5.2	)	$	(27.7	)
Interest rate contracts	———	—			(0.7		)	—			(1.1		)
		$	29.9		$	(22.2	)	$	(5.2	)	$	(28.8	)
Reclassified from accumulated other comprehensive loss into income:
Interest rate contracts	Interest expense	$	—		$	1.2		$	—		$	2.5
Commodity contracts	Cost of goods sold	(9.3		)	(7.5		)	(20.9		)	(11.0		)
		$	(9.3	)	$	(6.3	)	$	(20.9	)	$	(8.5	)
Derivatives – Fair Value Hedges
Interest rate contracts	Interest expense	$	—		$	(1.0	)	$	—		$	(1.7	)
Derivatives Not Designated as Hedging Instruments
Foreign exchange contracts	Selling and administration	$	0.6		$	(0.6	)	$	7.1		$	(3.0	)

Credit Risk and Collateral

By using derivative instruments, we are exposed to credit and market risk. If a counterparty fails to fulfill its performance obligations under a derivative contract, our credit risk will equal the fair value gain in a derivative. Generally, when the fair value of a derivative contract is positive, this indicates that the counterparty owes us, thus creating a repayment risk for us. When the fair value of a derivative contract is negative, we owe the counterparty and, therefore, assume no repayment risk. We minimize the credit (or repayment) risk in derivative instruments by entering into transactions with high-quality counterparties. We monitor our positions and the credit ratings of our counterparties, and we do not anticipate non-performance by the counterparties.

Based on the agreements with our various counterparties, cash collateral is required to be provided when the net fair value of the derivatives, with the counterparty, exceeds a specific threshold. If the threshold is exceeded, cash is either provided by the counterparty to us if the value of the derivatives is our asset, or cash is provided by us to the counterparty if the value of the derivatives is our liability. As of June 30, 2020, December 31, 2019 and June 30, 2019, this threshold was not exceeded. In all instances where we are party to a master netting agreement, we offset the receivable or payable recognized upon payment of cash collateral against the fair value amounts recognized for derivative instruments that have also been offset under such master netting agreements.

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FAIR VALUE MEASUREMENTS

6 Months Ended

Jun. 30, 2020

Fair Value Disclosures [Abstract]

FAIR VALUE MEASUREMENTS

NOTE 19. FAIR VALUE MEASUREMENTS

Fair value is defined as the price at which an asset could be exchanged in a current transaction between knowledgeable, willing parties or the amount that would be paid to transfer a liability to a new obligor, not the amount that would be paid to settle the liability with the creditor. Where available, fair value is based on observable market prices or parameters or derived from such prices or parameters. Where observable prices or inputs are not available, valuation models are applied. These valuation techniques involve some level of management estimation and judgment, the degree of which is dependent on the price transparency for the instruments or market and the instruments’ complexity.

Assets and liabilities recorded at fair value in the condensed balance sheets are categorized based upon the level of judgment associated with the inputs used to measure their fair value. Hierarchical levels, defined by ASC 820 “Fair Value Measurements and Disclosures” (ASC 820) are directly related to the amount of subjectivity associated with the inputs to fair valuation of these assets and liabilities, and are as follows:

Level 1 — Inputs were unadjusted, quoted prices in active markets for identical assets or liabilities at the measurement date.

Level 2 — Inputs (other than quoted prices included in Level 1) were either directly or indirectly observable for the asset or liability through correlation with market data at the measurement date and for the duration of the instrument’s anticipated life.

Level 3 — Inputs reflected management’s best estimate of what market participants would use in pricing the asset or liability at the measurement date. Consideration was given to the risk inherent in the valuation technique and the risk inherent in the inputs to the model.

We are required to separately disclose assets and liabilities measured at fair value on a recurring basis, from those measured at fair value on a nonrecurring basis. Nonfinancial assets measured at fair value on a nonrecurring basis are intangible assets and goodwill, which are reviewed for impairment annually in the fourth quarter and/or when circumstances or other events indicate that impairment may have occurred.

Determining which hierarchical level an asset or liability falls within requires significant judgment. We evaluate our hierarchy disclosures each quarter. The following table summarizes the assets and liabilities measured at fair value in the condensed balance sheets:

	Fair Value Measurements
Balance at June 30, 2020	Level 1		Level 2		Level 3		Total
Assets	($ in millions)
Commodity contracts	$	—	$	4.6	$	—	$	4.6
Foreign exchange contracts	—		2.4		—		2.4
Total assets	$	—	$	7.0	$	—	$	7.0
Liabilities
Commodity contracts	$	—	$	6.5	$	—	$	6.5
Foreign exchange contracts	—		1.2		—		1.2
Total liabilities	$	—	$	7.7	$	—	$	7.7
Balance at December 31, 2019
Assets
Commodity contracts	$	—	$	2.0	$	—	$	2.0
Foreign exchange contracts	—		0.6		—		0.6
Total assets	$	—	$	2.6	$	—	$	2.6
Liabilities
Commodity contracts	$	—	$	19.6	$	—	$	19.6
Foreign exchange contracts	—		1.2		—		1.2
Total liabilities	$	—	$	20.8	$	—	$	20.8
Balance at June 30, 2019
Assets
Interest rate swaps	$	—	$	1.7	$	—	$	1.7
Commodity contracts	—		0.7		—		0.7
Foreign exchange contracts	—		0.1		—		0.1
Total assets	$	—	$	2.5	$	—	$	2.5
Liabilities
Interest rate swaps	$	—	$	9.0	$	—	$	9.0
Commodity contracts	—		20.0		—		20.0
Foreign exchange contracts	—		0.7		—		0.7
Total liabilities	$	—	$	29.7	$	—	$	29.7

Interest Rate Swaps

Interest rate swap financial instruments were valued using the “income approach” valuation technique. This method used valuation techniques to convert future amounts to a single present amount. The measurement was based on the value indicated by current market expectations about those future amounts. We use interest rate swaps as a means of managing interest expense and floating interest rate exposure to optimal levels.

Commodity Contracts

Commodity contract financial instruments were valued primarily based on prices and other relevant information observable in market transactions involving identical or comparable assets or liabilities including both forward and spot prices for commodities. We use commodity derivative contracts for certain raw materials and energy costs such as copper, zinc, lead, ethane, electricity and natural gas to provide a measure of stability in managing our exposure to price fluctuations.

Foreign Currency Contracts

Foreign currency contract financial instruments were valued primarily based on relevant information observable in market transactions involving identical or comparable assets or liabilities including both forward and spot prices for currencies. We enter into forward sales and purchase contracts to manage currency risk resulting from purchase and sale commitments denominated in foreign currencies.

Financial Instruments

The carrying values of cash and cash equivalents, accounts receivable and accounts payable approximated fair values due to the short-term maturities of these instruments. The fair value of our long-term debt was determined based on current market rates for debt of similar risk and maturities. The following table summarizes the fair value measurements of debt and the actual debt recorded on our condensed balance sheets:

	Fair Value Measurements								Amount recorded on balance sheets
	Level 1		Level 2		Level 3		Total
	($ in millions)
Balance at June 30, 2020	$	—	$	3,901.7	$	153.0	$	4,054.7	$	4,075.7
Balance at December 31, 2019	—		3,417.5		153.0		3,570.5		3,340.8
Balance at June 30, 2019	—		3,262.6		153.0		3,415.6		3,233.7

Nonrecurring Fair Value Measurements

In addition to assets and liabilities that are recorded at fair value on a recurring basis, we record assets and liabilities at fair value on a nonrecurring basis as required by ASC 820. There were no assets measured at fair value on a nonrecurring basis as of June 30, 2020, December 31, 2019 and June 30, 2019.

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SUPPLEMENTAL GUARANTOR FINANCIAL INFORMATION

6 Months Ended

Jun. 30, 2020

Supplemental Guarantor Financial Information [Abstract]

SUPPLEMENTAL GUARANTOR FINANCIAL INFORMATION

NOTE 20. SUPPLEMENTAL GUARANTOR FINANCIAL INFORMATION

In October 2015, Blue Cube Spinco LLC (the Issuer) issued $720.0 million aggregate principal amount of 9.75% senior notes due October 15, 2023 (Blue Cube 2023 Notes) and $500.0 million aggregate principal amount of 10.00% senior notes due October 15, 2025 (Blue Cube 2025 Notes and, together with the Blue Cube 2023 Notes, the Blue Cube Notes). During 2016, the Blue Cube Notes were registered under the Securities Act of 1933, as amended. The Issuer was formed on March 13, 2015 as a wholly owned subsidiary of Dow and upon closing of the Acquisition became a 100% owned subsidiary of Olin (the Parent Guarantor). The Blue Cube Notes are fully and unconditionally guaranteed by the Parent Guarantor.

The following condensed consolidating financial information presents the condensed consolidating balance sheets as of June 30, 2020, December 31, 2019 and June 30, 2019, the related condensed consolidating statements of operations and comprehensive income (loss) for each of the three and six months ended June 30, 2020 and 2019 and the related condensed consolidating statements of cash flows for the six months ended June 30, 2020 and 2019 of (a) the Parent Guarantor, (b) the Issuer, (c) the non-guarantor subsidiaries, (d) elimination entries necessary to consolidate the Parent Guarantor with the Issuer and the non-guarantor subsidiaries and (e) Olin on a consolidated basis. Investments in consolidated subsidiaries are presented under the equity method of accounting.

CONDENSED CONSOLIDATING BALANCE SHEETS
June 30, 2020
(In millions)
(Unaudited)
	Parent Guarantor			Issuer		Subsidiary Non-Guarantor			Eliminations			Total
Assets
Current assets:
Cash and cash equivalents	$	56.9		$	—	$	181.0		$	—		$	237.9
Receivables, net	51.1			—		649.1			—			700.2
Intercompany receivables	—			—		2,587.6			(2,587.6		)	—
Income taxes receivable	10.9			—		8.3			(1.6		)	17.6
Inventories, net	131.4			—		487.7			—			619.1
Other current assets	259.8			—		1.0			(218.8		)	42.0
Total current assets	510.1			—		3,914.7			(2,808.0		)	1,616.8
Property, plant and equipment, net	705.5			—		2,529.4			—			3,234.9
Operating lease assets, net	44.2			—		327.6			—			371.8
Investment in subsidiaries	6,942.1			4,262.9		—			(11,205.0		)	—
Deferred income taxes	58.2			—		38.2			(58.1		)	38.3
Other assets	23.6			—		1,156.1			—			1,179.7
Long-term receivables—affiliates	73.4			560.2		—			(633.6		)	—
Intangible assets, net	0.2			—		416.7			—			416.9
Goodwill	—			966.3		1,153.4			—			2,119.7
Total assets	$	8,357.3		$	5,789.4	$	9,536.1		$	(14,704.7	)	$	8,978.1
Liabilities and Shareholders’ Equity
Current liabilities:
Current installments of long-term debt	$	1.8		$	—	$	—		$	—		$	1.8
Accounts payable	—			—		526.3			(5.5		)	520.8
Intercompany payables	2,587.6			—		—			(2,587.6		)	—
Income taxes payable	—			—		9.3			(1.6		)	7.7
Current operating lease liabilities	8.4			—		68.9			—			77.3
Accrued liabilities	188.8			—		345.4			(215.5		)	318.7
Total current liabilities	2,786.6			—		949.9			(2,810.2		)	926.3
Long-term debt	2,623.9			1,209.7		240.3			—			4,073.9
Operating lease liabilities	37.0			—		262.2			—			299.2
Accrued pension liability	463.2			—		304.8			—			768.0
Deferred income taxes	—			6.6		466.0			(58.1		)	414.5
Long-term payables—affiliates	—			—		633.6			(633.6		)	—
Other liabilities	257.7			5.6		44.0			—			307.3
Total liabilities	6,168.4			1,221.9		2,900.8			(3,501.9		)	6,789.2
Commitments and contingencies
Shareholders’ equity:
Common stock	157.9			—		14.6			(14.6		)	157.9
Additional paid-in capital	2,127.0			4,125.7		4,808.2			(8,933.9		)	2,127.0
Accumulated other comprehensive loss	(773.9		)	—		(7.5		)	7.5			(773.9		)
Retained earnings	677.9			441.8		1,820.0			(2,261.8		)	677.9
Total shareholders’ equity	2,188.9			4,567.5		6,635.3			(11,202.8		)	2,188.9
Total liabilities and shareholders’ equity	$	8,357.3		$	5,789.4	$	9,536.1		$	(14,704.7	)	$	8,978.1

CONDENSED CONSOLIDATING BALANCE SHEETS
December 31, 2019
(In millions)
(Unaudited)
	Parent Guarantor			Issuer		Subsidiary Non-Guarantor			Eliminations			Total
Assets
Current assets:
Cash and cash equivalents	$	11.6		$	—	$	209.3		$	—		$	220.9
Receivables, net	78.3			—		686.8			(4.7		)	760.4
Intercompany receivables	—			—		2,815.5			(2,815.5		)	—
Income taxes receivable	1.6			—		12.3			—			13.9
Inventories, net	157.1			—		538.6			—			695.7
Other current assets	231.4			—		0.2			(208.5		)	23.1
Total current assets	480.0			—		4,262.7			(3,028.7		)	1,714.0
Property, plant and equipment, net	699.0			—		2,624.8			—			3,323.8
Operating lease assets, net	47.4			—		330.4			—			377.8
Investment in subsidiaries	7,048.2			4,353.5		—			(11,401.7		)	—
Deferred income taxes	1.7			—		34.7			(1.1		)	35.3
Other assets	20.9			—		1,148.2			—			1,169.1
Long-term receivables—affiliates	73.4			605.8		—			(679.2		)	—
Intangible assets, net	0.3			—		447.8			—			448.1
Goodwill	—			966.3		1,153.4			—			2,119.7
Total assets	$	8,370.9		$	5,925.6	$	10,002.0		$	(15,110.7	)	$	9,187.8
Liabilities and Shareholders’ Equity
Current liabilities:
Current installments of long-term debt	$	2.1		$	—	$	—		$	—		$	2.1
Accounts payable	—			—		660.6			(8.7		)	651.9
Intercompany payables	2,815.5			—		—			(2,815.5		)	—
Income taxes payable	11.5			—		8.3			—			19.8
Current operating lease liabilities	8.2			—		71.1			—			79.3
Accrued liabilities	183.7			—		350.8			(205.4		)	329.1
Total current liabilities	3,021.0			—		1,090.8			(3,029.6		)	1,082.2
Long-term debt	2,130.0			1,208.7		—			—			3,338.7
Operating lease liabilities	40.4			—		263.0			—			303.4
Accrued pension liability	496.9			—		300.8			—			797.7
Deferred income taxes	—			6.5		449.2			(1.2		)	454.5
Long-term payables—affiliates	—			—		679.2			(679.2		)	—
Other liabilities	265.1			5.6		523.1			—			793.8
Total liabilities	5,953.4			1,220.8		3,306.1			(3,710.0		)	6,770.3
Commitments and contingencies
Shareholders' equity:
Common stock	157.7			—		14.6			(14.6		)	157.7
Additional paid-in capital	2,122.1			4,125.7		4,808.2			(8,933.9		)	2,122.1
Accumulated other comprehensive loss	(803.4		)	—		(6.5		)	6.5			(803.4		)
Retained earnings	941.1			579.1		1,879.6			(2,458.7		)	941.1
Total shareholders’ equity	2,417.5			4,704.8		6,695.9			(11,400.7		)	2,417.5
Total liabilities and shareholders’ equity	$	8,370.9		$	5,925.6	$	10,002.0		$	(15,110.7	)	$	9,187.8

CONDENSED CONSOLIDATING BALANCE SHEETS
June 30, 2019
(In millions)
(Unaudited)
	Parent Guarantor			Issuer		Subsidiary Non-Guarantor			Eliminations			Total
Assets
Current assets:
Cash and cash equivalents	$	3.7		$	—	$	123.2		$	—		$	126.9
Receivables, net	105.2			—		743.0			—			848.2
Intercompany receivables	—			—		2,804.3			(2,804.3		)	—
Income taxes receivable	16.2			—		7.2			—			23.4
Inventories, net	179.8			—		519.1			—			698.9
Other current assets	225.9			—		0.8			(197.9		)	28.8
Total current assets	530.8			—		4,197.6			(3,002.2		)	1,726.2
Property, plant and equipment, net	687.3			—		2,723.2			—			3,410.5
Operating lease assets, net	48.5			—		247.3			—			295.8
Investment in subsidiaries	7,028.6			4,330.9		—			(11,359.5		)	—
Deferred income taxes	3.9			—		29.0			(4.8		)	28.1
Other assets	14.3			—		1,160.2			—			1,174.5
Long-term receivables—affiliates	—			1,141.7		—			(1,141.7		)	—
Intangible assets, net	0.3			—		480.3			—			480.6
Goodwill	—			966.3		1,153.3			—			2,119.6
Total assets	$	8,313.7		$	6,438.9	$	9,990.9		$	(15,508.2	)	$	9,235.3
Liabilities and Shareholders’ Equity
Current liabilities:
Current installments of long-term debt	$	1.1		$	—	$	—		$	—		$	1.1
Accounts payable	15.9			—		658.6			(5.3		)	669.2
Intercompany payables	2,804.3			—		—			(2,804.3		)	—
Income taxes payable	—			—		9.5			—			9.5
Current operating lease liabilities	8.2			—		63.2			—			71.4
Accrued liabilities	176.9			—		317.1			(195.1		)	298.9
Total current liabilities	3,006.4			—		1,048.4			(3,004.7		)	1,050.1
Long-term debt	1,385.7			1,696.9		150.0			—			3,232.6
Operating lease liabilities	41.3			—		188.0			—			229.3
Accrued pension liability	414.6			—		239.0			—			653.6
Deferred income taxes	—			4.9		506.3			(4.8		)	506.4
Long-term payables—affiliates	419.6			—		722.1			(1,141.7		)	—
Other liabilities	275.3			5.5		511.7			—			792.5
Total liabilities	5,542.9			1,707.3		3,365.5			(4,151.2		)	6,464.5
Commitments and contingencies
Shareholders' equity:
Common stock	164.3			—		14.6			(14.6		)	164.3
Additional paid-in capital	2,229.2			4,125.7		4,808.2			(8,933.9		)	2,229.2
Accumulated other comprehensive loss	(660.4		)	—		(10.0		)	10.0			(660.4		)
Retained earnings	1,037.7			605.9		1,812.6			(2,418.5		)	1,037.7
Total shareholders’ equity	2,770.8			4,731.6		6,625.4			(11,357.0		)	2,770.8
Total liabilities and shareholders’ equity	$	8,313.7		$	6,438.9	$	9,990.9		$	(15,508.2	)	$	9,235.3

CONDENSED CONSOLIDATING STATEMENTS OF OPERATIONS
Three Months Ended June 30, 2020
(In millions)
(Unaudited)
	Parent Guarantor			Issuer			Subsidiary Non-Guarantor			Eliminations			Total
Sales	$	346.9		$	—		$	1,023.8		$	(129.5	)	$	1,241.2
Operating expenses:
Cost of goods sold	319.5			—			1,045.7			(129.5		)	1,235.7
Selling and administration	69.0			—			30.7			—			99.7
Restructuring charges	—			—			1.7			—			1.7
Other operating income	0.1			—			—			—			0.1
Operating loss	(41.5		)	—			(54.3		)	—			(95.8		)
Equity loss in subsidiaries	(65.6		)	(59.5		)	—			125.1			—
Interest expense	39.3			30.6			0.6			(1.1		)	69.4
Interest income	1.3			—			—			(1.1		)	0.2
Non-operating pension income (expense)	6.6			—			(1.7		)	—			4.9
Loss before taxes	(138.5		)	(90.1		)	(56.6		)	125.1			(160.1		)
Income tax benefit	(18.4		)	(7.2		)	(14.4		)	—			(40.0		)
Net loss	$	(120.1	)	$	(82.9	)	$	(42.2	)	$	125.1		$	(120.1	)

CONDENSED CONSOLIDATING STATEMENTS OF OPERATIONS
Six Months Ended June 30, 2020
(In millions)
(Unaudited)
	Parent Guarantor			Issuer			Subsidiary Non-Guarantor			Eliminations			Total
Sales	$	700.2		$	—		$	2,225.6		$	(259.5	)	$	2,666.3
Operating expenses:
Cost of goods sold	653.1			—			2,216.3			(259.5		)	2,609.9
Selling and administration	108.9			—			87.5			—			196.4
Restructuring charges	—			—			3.4			—			3.4
Other operating income	0.1			—			—			—			0.1
Operating loss	(61.7		)	—			(81.6		)	—			(143.3		)
Equity loss in subsidiaries	(114.1		)	(90.6		)	—			204.7			—
Interest expense	71.7			61.2			3.7			(4.1		)	132.5
Interest income	3.4			—			1.0			(4.1		)	0.3
Non-operating pension income (expense)	13.1			—			(3.6		)	—			9.5
Loss before taxes	(231.0		)	(151.8		)	(87.9		)	204.7			(266.0		)
Income tax benefit	(30.9		)	(14.5		)	(20.5		)	—			(65.9		)
Net loss	$	(200.1	)	$	(137.3	)	$	(67.4	)	$	204.7		$	(200.1	)

CONDENSED CONSOLIDATING STATEMENTS OF OPERATIONS
Three Months Ended June 30, 2019
(In millions)
(Unaudited)
	Parent Guarantor			Issuer			Subsidiary Non-Guarantor			Eliminations			Total
Sales	$	324.0		$	—		$	1,397.3		$	(128.4	)	$	1,592.9
Operating expenses:
Cost of goods sold	309.8			—			1,282.3			(128.4		)	1,463.7
Selling and administration	47.8			—			49.2			—			97.0
Restructuring charges	—			—			3.8			—			3.8
Other operating (expense) income	(2.3		)	—			2.4			—			0.1
Operating (loss) income	(35.9		)	—			64.4			—			28.5
Equity income (loss) in subsidiaries	10.9			(8.6		)	—			(2.3		)	—
Interest expense	18.3			35.7			6.5			(2.6		)	57.9
Interest income	2.0			—			0.9			(2.6		)	0.3
Non-operating pension income (expense)	5.7			—			(1.5		)	—			4.2
Income (loss) before taxes	(35.6		)	(44.3		)	57.3			(2.3		)	(24.9		)
Income tax (benefit) provision	(15.6		)	(8.7		)	19.4			—			(4.9		)
Net (loss) income	$	(20.0	)	$	(35.6	)	$	37.9		$	(2.3	)	$	(20.0	)

CONDENSED CONSOLIDATING STATEMENTS OF OPERATIONS
Six Months Ended June 30, 2019
(In millions)
(Unaudited)
	Parent Guarantor			Issuer			Subsidiary Non-Guarantor			Eliminations			Total
Sales	$	656.8		$	—		$	2,725.0		$	(235.5	)	$	3,146.3
Operating expenses:
Cost of goods sold	613.9			—			2,432.6			(235.5		)	2,811.0
Selling and administration	99.6			—			104.4			—			204.0
Restructuring charges	1.4			—			6.4			—			7.8
Other operating (expense) income	(4.4		)	—			4.6			—			0.2
Operating (loss) income	(62.5		)	—			186.2			—			123.7
Equity income in subsidiaries	73.5			44.0			—			(117.5		)	—
Interest expense	35.7			71.8			11.7			(3.9		)	115.3
Interest income	2.6			—			1.8			(3.9		)	0.5
Non-operating pension income (expense)	11.1			—			(3.0		)	—			8.1
Other income	11.2			—			—			—			11.2
Income (loss) before taxes	0.2			(27.8		)	173.3			(117.5		)	28.2
Income tax (benefit) provision	(21.5		)	(17.4		)	45.4			—			6.5
Net income (loss)	$	21.7		$	(10.4	)	$	127.9		$	(117.5	)	$	21.7

CONDENSED CONSOLIDATING STATEMENTS OF COMPREHENSIVE INCOME (LOSS)
Three Months Ended June 30, 2020
(In millions)
(Unaudited)
	Parent Guarantor			Issuer			Subsidiary Non-Guarantor			Eliminations		Total
Net loss	$	(120.1	)	$	(82.9	)	$	(42.2	)	$	125.1	$	(120.1	)
Other comprehensive income, net of tax:
Foreign currency translation adjustments, net	—			—			8.2			—		8.2
Unrealized gains on derivative contracts, net	30.0			—			—			—		30.0
Amortization of prior service costs and actuarial losses, net	7.6			—			1.4			—		9.0
Total other comprehensive income, net of tax	37.6			—			9.6			—		47.2
Comprehensive loss	$	(82.5	)	$	(82.9	)	$	(32.6	)	$	125.1	$	(72.9	)

CONDENSED CONSOLIDATING STATEMENTS OF COMPREHENSIVE INCOME (LOSS)
Six Months Ended June 30, 2020
(In millions)
(Unaudited)
	Parent Guarantor			Issuer			Subsidiary Non-Guarantor			Eliminations		Total
Net loss	$	(200.1	)	$	(137.3	)	$	(67.4	)	$	204.7	$	(200.1	)
Other comprehensive income, net of tax:
Foreign currency translation adjustments, net	—			—			(0.8		)	—		(0.8		)
Unrealized gains on derivative contracts, net	12.1			—			—			—		12.1
Amortization of prior service costs and actuarial losses, net	15.5			—			2.7			—		18.2
Total other comprehensive income, net of tax	27.6			—			1.9			—		29.5
Comprehensive loss	$	(172.5	)	$	(137.3	)	$	(65.5	)	$	204.7	$	(170.6	)

CONDENSED CONSOLIDATING STATEMENTS OF COMPREHENSIVE INCOME (LOSS)
Three Months Ended June 30, 2019
(In millions)
(Unaudited)
	Parent Guarantor			Issuer			Subsidiary Non-Guarantor		Eliminations			Total
Net (loss) income	$	(20.0	)	$	(35.6	)	$	37.9	$	(2.3	)	$	(20.0	)
Other comprehensive (loss) income, net of tax:
Foreign currency translation adjustments, net	—			—			3.3		—			3.3
Unrealized losses on derivative contracts, net	(12.1		)	—			—		—			(12.1		)
Amortization of prior service costs and actuarial losses, net	4.8			—			0.5		—			5.3
Total other comprehensive (loss) income, net of tax	(7.3		)	—			3.8		—			(3.5		)
Comprehensive (loss) income	$	(27.3	)	$	(35.6	)	$	41.7	$	(2.3	)	$	(23.5	)

CONDENSED CONSOLIDATING STATEMENTS OF COMPREHENSIVE INCOME (LOSS)
Six Months Ended June 30, 2019
(In millions)
(Unaudited)
	Parent Guarantor			Issuer			Subsidiary Non-Guarantor			Eliminations			Total
Net income (loss)	$	21.7		$	(10.4	)	$	127.9		$	(117.5	)	$	21.7
Other comprehensive loss, net of tax:
Foreign currency translation adjustments, net	—			—			(5.0		)	—			(5.0		)
Unrealized losses on derivative contracts, net	(15.4		)	—			—			—			(15.4		)
Amortization of prior service costs and actuarial losses, net	9.9			—			1.1			—			11.0
Total other comprehensive loss, net of tax	(5.5		)	—			(3.9		)	—			(9.4		)
Comprehensive income (loss)	$	16.2		$	(10.4	)	$	124.0		$	(117.5	)	$	12.3

CONDENSED CONSOLIDATING STATEMENTS OF CASH FLOWS
Six Months Ended June 30, 2020
(In millions)
(Unaudited)
	Parent Guarantor			Issuer		Subsidiary Non-Guarantor			Eliminations		Total
Net operating activities	$	219.1		$	—	$	(163.7	)	$	—	$	55.4
Investing Activities
Capital expenditures	(61.5		)	—		(105.0		)	—		(166.5		)
Payments under ethylene long-term supply contracts	—			—		(461.0		)	—		(461.0		)
Payments under other long-term supply contracts	—			—		(75.8		)	—		(75.8		)
Net investing activities	(61.5		)	—		(641.8		)	—		(703.3		)
Financing Activities
Long-term debt:
Borrowings	672.5			—		490.7			—		1,163.2
Repayments	(175.8		)	—		(250.0		)	—		(425.8		)
Stock options exercised	0.5			—		—			—		0.5
Dividends paid	(63.1		)	—		—			—		(63.1		)
Debt issuance costs	(9.6		)	—		—			—		(9.6		)
Intercompany financing activities	(536.8		)	—		536.8			—		—
Net financing activities	(112.3		)	—		777.5			—		665.2
Effect of exchange rate changes on cash and cash equivalents	—			—		(0.3		)	—		(0.3		)
Net increase (decrease) in cash and cash equivalents	45.3			—		(28.3		)	—		17.0
Cash and cash equivalents, beginning of year	11.6			—		209.3			—		220.9
Cash and cash equivalents, end of period	$	56.9		$	—	$	181.0		$	—	$	237.9

CONDENSED CONSOLIDATING STATEMENTS OF CASH FLOWS
Six Months Ended June 30, 2019
(In millions)
(Unaudited)
	Parent Guarantor			Issuer			Subsidiary Non-Guarantor			Eliminations		Total
Net operating activities	$	120.1		$	—		$	116.0		$	—	$	236.1
Investing Activities
Capital expenditures	(86.9		)	—			(104.4		)	—		(191.3		)
Proceeds from disposition of non-consolidated affiliate	20.0			—			—			—		20.0
Net investing activities	(66.9		)	—			(104.4		)	—		(171.3		)
Financing Activities
Long-term debt:
Borrowings	—			—			25.0			—		25.0
Repayments	(0.6		)	(50.0		)	—			—		(50.6		)
Common stock repurchased and retired	(26.7		)	—			—			—		(26.7		)
Stock options exercised	1.5			—			—			—		1.5
Dividends paid	(65.7		)	—			—			—		(65.7		)
Intercompany financing activities	(50.0		)	50.0			—			—		—
Net financing activities	(141.5		)	—			25.0			—		(116.5		)
Effect of exchange rate changes on cash and cash equivalents	—			—			(0.2		)	—		(0.2		)
Net (decrease) increase in cash and cash equivalents	(88.3		)	—			36.4			—		(51.9		)
Cash and cash equivalents, beginning of year	92.0			—			86.8			—		178.8
Cash and cash equivalents, end of period	$	3.7		$	—		$	123.2		$	—	$	126.9

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ALLOWANCE FOR DOUBTFUL ACCOUNTS RECEIVABLES (Policies)

6 Months Ended

Jun. 30, 2020

Accounts Receivable, after Allowance for Credit Loss [Abstract]

Allowance for Doubtful Accounts Receivables

We evaluate the collectibility of financial instruments based on our current estimate of credit losses expected to be incurred over the life of the financial instrument.  The only significant financial instrument which creates exposure to credit losses are customer accounts receivables.  We measure credit losses on uncollected accounts receivable through an allowance for doubtful accounts receivable which is based on a combination of factors including both historical collection experience and reasonable estimates that affect the expected collectibility of the receivable.  These factors include historical bad debt experience, industry conditions of the customer or group of customers, geographical region, credit ratings and general market conditions. We group receivables together for purposes of estimating credit losses when customers have similar risk characteristics; otherwise, the estimation is performed on the individual receivable.

This estimate is periodically adjusted when we become aware of a specific customer’s inability to meet its financial obligations (e.g., bankruptcy filing) or as a result of changes in the overall aging of accounts receivable. While we have a large number of customers that operate in diverse businesses and are geographically dispersed, a general economic downturn in any of the industry segments in which we operate could result in higher than expected defaults, and, therefore, the need to revise estimates for the provision for doubtful accounts could occur.

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GOODWILL AND INTANGIBLES (Policies)

6 Months Ended

Jun. 30, 2020

Goodwill and Intangible Assets Disclosure [Abstract]

Goodwill

Goodwill is not amortized, but is reviewed for impairment annually in the fourth quarter and/or when circumstances or other events indicate that impairment may have occurred. Circumstances that are considered as part of the qualitative assessment and could trigger a quantitative impairment test include, but are not limited to:  a significant adverse change in the business climate; a significant adverse legal judgment; adverse cash flow trends; an adverse action or assessment by a government agency; unanticipated competition; sustained decline in our stock price; and a significant restructuring charge within a reporting unit.  As of June 30, 2020, we do not believe it is more likely than not the carrying value exceeded the estimated fair value of our reporting units. During the three months ended March 31, 2020, we identified triggering events associated with a significant overall decrease in our stock price, a significant adverse change in the business climate and a significant reduction in near-term cash flow projections. As a result of these events, we performed a quantitative goodwill impairment test during the first quarter of 2020. We used a discounted cash flow approach to develop the estimated fair value of our reporting units. Based on the aforementioned analysis, the estimated fair value of our reporting units exceeded the carrying value of the reporting units and no impairment charges were recorded.

The discount rate, profitability assumptions and terminal growth rate of our reporting units and the cyclical nature of the chlor alkali industry were the material assumptions utilized in the discounted cash flow model used to estimate the fair value of each reporting unit.  The discount rate reflects a weighted-average cost of capital, which is calculated based on observable market data.  Some of this data (such as the risk free or treasury rate and the pretax cost of debt) are based on the market data at a point in time.  Other data (such as the equity risk premium) are based upon market data over time for a peer group of companies in the chemical manufacturing or distribution industries with a market capitalization premium added, as applicable.

The discounted cash flow analysis requires estimates, assumptions and judgments about future events.  Our analysis uses our internally generated long-range plan.  Our discounted cash flow analysis uses the assumptions in our long-range plan about terminal growth rates, forecasted capital expenditures and changes in future working capital requirements to determine the implied fair value of each reporting unit.  The long-range plan reflects management judgment, supplemented by independent chemical industry analyses which provide multi-year chlor alkali industry operating and pricing forecasts.

We believe the assumptions used in our goodwill impairment analysis are appropriate and result in reasonable estimates of the implied fair value of each reporting unit.  However, given the economic environment and the uncertainties regarding the impact on our business, there can be no assurance that our estimates and assumptions, made for purposes of our goodwill impairment testing, will prove to be an accurate prediction of the future.  In order to evaluate the sensitivity of the fair value calculation on the goodwill impairment test, we applied three separate sensitivities: a hypothetical 10% decrease to the fair value of each reporting unit, a hypothetical decrease of 100-basis points in our terminal growth rate and an increase of 100-basis points in our weighted-average cost of capital to test the fair value calculation. The hypothetical 10% decrease to the fair value of our Chlor Alkali Products and Vinyls reporting unit exceeded the carrying value of the reporting unit, but was not significantly in excess of the carrying value. In all other cases, the estimated fair value of our Epoxy and Chlor Alkali Products

and Vinyls reporting units derived in these sensitivity calculations did not exceed the carrying value of our reporting units.  If our assumptions regarding future performance are not achieved, we may be required to record goodwill impairment charges in future periods.  It is not possible at this time to determine if any such future impairment charge would result or, if it does, whether such charge would be material.

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RESTRUCTURING CHARGES (Tables)

6 Months Ended

Jun. 30, 2020

Restructuring and Related Activities [Abstract]

Schedule of Restructuring Reserve by Type of Cost

The following table summarizes the 2020 and 2019 activities by major component of these restructuring actions and the remaining balances of accrued restructuring costs as of June 30, 2020 and 2019:

	Employee severance and related benefit costs			Lease and other contract termination costs			Facility exit costs			Total
	($ in millions)
Balance at January 1, 2019	$	1.5		$	6.0		$	0.7		$	8.2
Restructuring charges:
First quarter	1.4			0.1			2.5			4.0
Second quarter	0.4			0.2			3.2			3.8
Amounts utilized	(3.3		)	(1.0		)	(5.5		)	(9.8		)
Balance at June 30, 2019	$	—		$	5.3		$	0.9		$	6.2
Balance at January 1, 2020	$	—		$	3.1		$	—		$	3.1
Restructuring charges:
First quarter	0.1			0.1			1.5			1.7
Second quarter	—			—			1.7			1.7
Amounts utilized	(0.1		)	(0.6		)	(3.2		)	(3.9		)
Balance at June 30, 2020	$	—		$	2.6		$	—		$	2.6

Cumulative Restructuring Charges by Type and Plan

The following table summarizes the cumulative restructuring charges of these restructuring actions by major component through June 30, 2020:

	Chlor Alkali Products and Vinyls				Winchester		Total
	Freeport		Capacity Reductions
	($ in millions)
Write-off of equipment and facility	$	58.9	$	78.1	$	2.6	$	139.6
Employee severance and related benefit costs	—		6.7		2.7		9.4
Facility exit costs	0.5		50.9		0.2		51.6
Employee relocation costs	—		1.7		—		1.7
Lease and other contract termination costs	—		41.0		0.4		41.4
Total cumulative restructuring charges	$	59.4	$	178.4	$	5.9	$	243.7

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ACCOUNTS RECEIVABLES (Tables)

6 Months Ended

Jun. 30, 2020

Receivables [Abstract]

AR Facilities

The following table summarizes the AR Facilities activity:

	June 30,
	2020			2019
	($ in millions)
Balance at beginning of year	$	63.1		$	132.4
Gross receivables sold	457.5			522.4
Payments received from customers on sold accounts	(458.9		)	(556.1		)
Balance at end of period	$	61.7		$	98.7

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ALLOWANCE FOR DOUBTFUL ACCOUNTS RECEIVABLES (Tables)

6 Months Ended

Jun. 30, 2020

Accounts Receivable, after Allowance for Credit Loss [Abstract]

Allowance for Doubtful Accounts Receivable

Allowance for doubtful accounts receivables consisted of the following:

	June 30,
	2020			2019
	($ in millions)
Balance at beginning of year	$	11.9		$	12.9
Provisions charged	0.7			0.9
Write-offs, net of recoveries	—			(2.1		)
Foreign currency translation adjustment	(0.1		)	0.2
Balance at end of period	$	12.5		$	11.9

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INVENTORIES (Tables)

6 Months Ended

Jun. 30, 2020

Inventory Disclosure [Abstract]

Inventories Table

Inventories consisted of the following:

	June 30, 2020			December 31, 2019			June 30, 2019
	($ in millions)
Supplies	$	81.0		$	80.5		$	74.6
Raw materials	74.3			74.9			73.1
Work in process	114.9			140.3			140.6
Finished goods	392.7			449.5			469.8
	662.9			745.2			758.1
LIFO reserve	(43.8		)	(49.5		)	(59.2		)
Inventories, net	$	619.1		$	695.7		$	698.9

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OTHER ASSETS (Tables)

6 Months Ended

Jun. 30, 2020

Other Assets [Abstract]

Schedule of Other Assets

Included in other assets were the following:

	June 30, 2020		December 31, 2019		June 30, 2019
	($ in millions)
Supply contracts	$	1,137.9	$	1,112.6	$	1,131.4
Other	41.8		56.5		43.1
Other assets	$	1,179.7	$	1,169.1	$	1,174.5

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GOODWILL AND INTANGIBLES (Tables)

6 Months Ended

Jun. 30, 2020

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Goodwill

Changes in the carrying value of goodwill were as follows:

	Chlor Alkali Products and Vinyls		Epoxy		Total
	($ in millions)
Balance at January 1, 2019	$	1,832.6	$	287.0	$	2,119.6
Foreign currency translation adjustment	—		—		—
Balance at June 30, 2019	$	1,832.6	$	287.0	$	2,119.6
Balance at January 1, 2020	$	1,832.7	$	287.0	2,119.7
Foreign currency translation adjustment	—		—		—
Balance at June 30, 2020	$	1,832.7	$	287.0	$	2,119.7

Schedule of Finite-Lived Intangible Assets

Intangible assets consisted of the following:

	June 30, 2020							December 31, 2019							June 30, 2019
	Gross Amount		Accumulated Amortization			Net		Gross Amount		Accumulated Amortization			Net		Gross Amount		Accumulated Amortization			Net
	($ in millions)
Customers, customer contracts and relationships	$	673.3	$	(285.3	)	$	388.0	$	673.5	$	(260.9	)	$	412.6	$	674.4	$	(236.3	)	$	438.1
Trade name	7.0		(6.7		)	0.3		7.0		(6.0		)	1.0		7.0		(5.3		)	1.7
Acquired technology	85.1		(57.7		)	27.4		85.1		(51.8		)	33.3		85.3		(45.7		)	39.6
Other	1.8		(0.6		)	1.2		1.8		(0.6		)	1.2		1.8		(0.6		)	1.2
Total intangible assets	$	767.2	$	(350.3	)	$	416.9	$	767.4	$	(319.3	)	$	448.1	$	768.5	$	(287.9	)	$	480.6

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EARNINGS PER SHARE (Tables)

6 Months Ended

Jun. 30, 2020

Earnings Per Share [Abstract]

Basic and Diluted Earnings Per Share Table

	Three Months Ended June 30,						Six Months Ended June 30,
	2020			2019			2020			2019
Computation of Net (Loss) Income per Share	(In millions, except per share data)
Net (loss) income	$	(120.1	)	$	(20.0	)	$	(200.1	)	$	21.7
Basic shares	157.9			164.6			157.8			164.8
Basic net (loss) income per share	$	(0.76	)	$	(0.12	)	$	(1.27	)	$	0.13
Diluted shares:
Basic shares	157.9			164.6			157.8			164.8
Stock-based compensation	—			—			—			0.9
Diluted shares	157.9			164.6			157.8			165.7
Diluted net (loss) income per share	$	(0.76	)	$	(0.12	)	$	(1.27	)	$	0.13

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ENVIRONMENTAL (Tables)

6 Months Ended

Jun. 30, 2020

Environmental Remediation Obligations [Abstract]

Environmental Provisions Charged (Credited) to Income [Table Text Block]

Environmental provisions charged to income, which are included in costs of goods sold, were as follows:

	Three Months Ended June 30,					Six Months Ended June 30,
	2020		2019			2020		2019
	($ in millions)
Provisions charged to income	$	2.8	$	22.0		$	5.4	$	23.8
Recoveries for costs incurred and expensed	—		(4.8		)	—		(4.8		)
Environmental expense	$	2.8	$	17.2		$	5.4	$	19.0

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SHAREHOLDERS' EQUITY (Tables)

6 Months Ended

Jun. 30, 2020

Stockholders' Equity Note [Abstract]

Activity included in accumulated other comprehensive loss table

The following table represents the activity included in accumulated other comprehensive loss:

	Foreign Currency Translation Adjustment (net of taxes)			Unrealized (Losses) Gains on Derivative Contracts (net of taxes)			Pension and Other Postretirement Benefits (net of taxes)			Accumulated Other Comprehensive Loss
	($ in millions)
Balance at January 1, 2019	$	0.7		$	1.8		$	(653.5	)	$	(651.0	)
Unrealized (losses) gains:
First quarter	(8.3		)	(6.6		)	—			(14.9		)
Second quarter	3.3			(22.2		)	—			(18.9		)
Reclassification adjustments of losses into income:
First quarter	—			2.2			7.4			9.6
Second quarter	—			6.3			7.1			13.4
Tax benefit (provision):
First quarter	—			1.1			(1.7		)	(0.6		)
Second quarter	—			3.8			(1.8		)	2.0
Net change	(5.0		)	(15.4		)	11.0			(9.4		)
Balance at June 30, 2019	$	(4.3	)	$	(13.6	)	$	(642.5	)	$	(660.4	)
Balance at January 1, 2020	$	(8.4	)	$	(13.6	)	$	(781.4	)	$	(803.4	)
Unrealized (losses) gains:
First quarter	(9.0		)	(35.1		)	—			(44.1		)
Second quarter	8.2			29.9			—			38.1
Reclassification adjustments of losses into income:
First quarter	—			11.6			11.9			23.5
Second quarter	—			9.3			11.6			20.9
Tax benefit (provision):
First quarter	—			5.6			(2.7		)	2.9
Second quarter	—			(9.2		)	(2.6		)	(11.8		)
Net change	(0.8		)	12.1			18.2			29.5
Balance at June 30, 2020	$	(9.2	)	$	(1.5	)	$	(763.2	)	$	(773.9	)

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SEGMENT INFORMATION (Tables)

6 Months Ended

Jun. 30, 2020

Segment Reporting [Abstract]

Segment Information

	Three Months Ended June 30,						Six Months Ended June 30,
	2020			2019			2020			2019
Sales:	($ in millions)
Chlor Alkali Products and Vinyls	$	651.2		$	909.2		$	1,411.1		$	1,781.4
Epoxy	397.4			518.8			874.6			1,042.8
Winchester	192.6			164.9			380.6			322.1
Total sales	$	1,241.2		$	1,592.9		$	2,666.3		$	3,146.3
Income (loss) before taxes:
Chlor Alkali Products and Vinyls	$	(57.0	)	$	70.7		$	(91.3	)	$	191.1
Epoxy	(13.0		)	3.9			(1.3		)	14.4
Winchester	16.0			10.1			26.5			19.2
Corporate/other:
Environmental expense	(2.8		)	(17.2		)	(5.4		)	(19.0		)
Other corporate and unallocated costs	(37.4		)	(35.3		)	(68.5		)	(74.4		)
Restructuring charges	(1.7		)	(3.8		)	(3.4		)	(7.8		)
Other operating income	0.1			0.1			0.1			0.2
Interest expense	(69.4		)	(57.9		)	(132.5		)	(115.3		)
Interest income	0.2			0.3			0.3			0.5
Non-operating pension income	4.9			4.2			9.5			8.1
Other income	—			—			—			11.2
Income (loss) before taxes	$	(160.1	)	$	(24.9	)	$	(266.0	)	$	28.2

Disaggregation of Revenue

	Three Months Ended June 30,				Six Months Ended June 30,
	2020		2019		2020		2019
Sales by geography:	($ in millions)
Chlor Alkali Products and Vinyls
United States	$	450.3	$	601.0	$	984.2	$	1,205.0
Europe	26.8		39.1		57.0		77.7
Other foreign	174.1		269.1		369.9		498.7
Total Chlor Alkali Products and Vinyls	651.2		909.2		1,411.1		1,781.4
Epoxy
United States	122.5		175.4		281.3		339.5
Europe	140.4		222.6		334.8		458.0
Other foreign	134.5		120.8		258.5		245.3
Total Epoxy	397.4		518.8		874.6		1,042.8
Winchester
United States	178.6		146.8		352.7		288.1
Europe	2.3		2.3		4.8		5.1
Other foreign	11.7		15.8		23.1		28.9
Total Winchester	192.6		164.9		380.6		322.1
Total
United States	751.4		923.2		1,618.2		1,832.6
Europe	169.5		264.0		396.6		540.8
Other foreign	320.3		405.7		651.5		772.9
Total sales	$	1,241.2	$	1,592.9	$	2,666.3	$	3,146.3

	Three Months Ended June 30,				Six Months Ended June 30,
	2020		2019		2020		2019
Sales by product line:	($ in millions)
Chlor Alkali Products and Vinyls
Caustic soda	$	320.2	$	461.0	$	680.4	$	923.1
Chlorine, chlorine-derivatives and other co-products	331.0		448.2		730.7		858.3
Total Chlor Alkali Products and Vinyls	651.2		909.2		1,411.1		1,781.4
Epoxy
Aromatics and allylics	167.0		234.8		384.4		478.6
Epoxy resins	230.4		284.0		490.2		564.2
Total Epoxy	397.4		518.8		874.6		1,042.8
Winchester
Commercial	135.6		103.6		262.7		210.0
Military and law enforcement	57.0		61.3		117.9		112.1
Total Winchester	192.6		164.9		380.6		322.1
Total sales	$	1,241.2	$	1,592.9	$	2,666.3	$	3,146.3

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STOCK-BASED COMPENSATION (Tables)

6 Months Ended

Jun. 30, 2020

Share-based Payment Arrangement [Abstract]

Stock-based compensation expense

Stock-based compensation expense (benefit) was as follows:

	Three Months Ended June 30,						Six Months Ended June 30,
	2020			2019			2020			2019
	($ in millions)
Stock-based compensation	$	4.3		$	(1.3	)	$	6.3		$	4.3
Mark-to-market adjustments	(0.1		)	(0.9		)	(3.1		)	0.4
Total expense (benefit)	$	4.2		$	(2.2	)	$	3.2		$	4.7

Schedule of fair value of stock options granted

The fair value of each stock option granted, which typically vests ratably over three years, but not less than one year, was estimated on the date of grant, using the Black-Scholes option-pricing model with the following weighted-average assumptions:

Grant date	2020			2019
Dividend yield	4.60		%	3.05		%
Risk-free interest rate	1.44		%	2.51		%
Expected volatility	36		%	34		%
Expected life (years)	6.0			6.0
Weighted-average grant fair value (per option)	$	3.64		$	6.76
Weighted-average exercise price	$	17.33		$	26.26
Shares granted	2,665,700			1,575,900

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PENSION PLANS AND RETIREMENT BENEFITS (Tables)

6 Months Ended

Jun. 30, 2020

Retirement Benefits [Abstract]

Components of Net Periodic Benefit (Income) Cost

	Pension Benefits						Other Postretirement Benefits
	Three Months Ended June 30,						Three Months Ended June 30,
	2020			2019			2020		2019
Components of Net Periodic Benefit (Income) Cost	($ in millions)
Service cost	$	2.7		$	2.7		$	0.4	$	0.3
Interest cost	18.8			23.7			0.3		0.5
Expected return on plans’ assets	(35.6		)	(35.5		)	—		—
Recognized actuarial loss	11.1			6.6			0.5		0.5
Net periodic benefit (income) cost	$	(3.0	)	$	(2.5	)	$	1.2	$	1.3

	Pension Benefits						Other Postretirement Benefits
	Six Months Ended June 30,						Six Months Ended June 30,
	2020			2019			2020		2019
Components of Net Periodic Benefit (Income) Cost	($ in millions)
Service cost	$	5.7		$	5.8		$	0.7	$	0.6
Interest cost	37.5			47.3			0.7		0.9
Expected return on plans’ assets	(71.2		)	(70.8		)	—		—
Recognized actuarial loss	22.3			13.4			1.2		1.1
Net periodic benefit (income) cost	$	(5.7	)	$	(4.3	)	$	2.6	$	2.6

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INCOME TAXES (Tables)

6 Months Ended

Jun. 30, 2020

Income Tax Disclosure [Abstract]

Unrecognized Tax Benefits

he amount of unrecognized tax benefits was as follows:

	June 30,
	2020			2019
	($ in millions)
Balance at beginning of year	$	22.8		$	33.8
Decreases for prior year tax positions	(1.8		)	—
Increases for current year tax positions	1.0			1.2
Balance at end of period	$	22.0		$	35.0

Tax Returns Subject to Examination

For our primary tax jurisdictions, the tax years that remain subject to examination are as follows:

	Tax Years
U.S. federal income tax	2016 - 2019
U.S. state income tax	2006 - 2019
Canadian federal income tax	2012 - 2019
Brazil	2014 - 2019
Germany	2015 - 2019
China	2014 - 2019
The Netherlands	2014 - 2019

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DERIVATIVE FINANCIAL INSTRUMENTS (Tables)

6 Months Ended

Jun. 30, 2020

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Schedule of derivative instruments

We had the following notional amounts of outstanding commodity contracts that were entered into to hedge forecasted purchases:

	June 30, 2020		December 31, 2019		June 30, 2019
	($ in millions)
Natural gas	$	59.3	$	62.9	$	67.1
Ethane	48.2		51.5		53.4
Metals	117.6		60.2		65.6
Total notional	$	225.1	$	174.6	$	186.1

Summary of location and fair value of derivative instruments on condensed balance sheets

The following table summarizes the location and fair value of the derivative instruments on our condensed balance sheets. The table disaggregates our net derivative assets and liabilities into gross components on a contract-by-contract basis before giving effect to master netting arrangements:

	June 30, 2020			December 31, 2019			June 30, 2019
	($ in millions)
Asset derivatives:
Other current assets
Derivatives designated as hedging instruments:
Interest rate contracts - gains	$	—		$	—		$	1.7
Commodity contracts - gains	5.1			1.8			0.5
Commodity contracts - losses	(2.8		)	(0.5		)	(0.3		)
Derivatives not designated as hedging instruments:
Foreign exchange contracts - gains	5.3			1.1			0.4
Foreign exchange contracts - losses	(2.9		)	(0.5		)	(0.3		)
Total other current assets	4.7			1.9			2.0
Other assets
Derivatives designated as hedging instruments:
Commodity contracts - gains	3.0			0.8			0.9
Commodity contracts - losses	(0.7		)	(0.1		)	(0.4		)
Total other assets	2.3			0.7			0.5
Total asset derivatives(1)	$	7.0		$	2.6		$	2.5
Liability derivatives:
Accrued liabilities
Derivatives designated as hedging instruments:
Commodity contracts - losses	$	8.8		$	18.0		$	18.8
Commodity contracts - gains	(2.4		)	(0.2		)	(0.5		)
Derivatives not designated as hedging instruments:
Foreign exchange contracts - losses	1.3			1.4			0.9
Foreign exchange contracts - gains	(0.1		)	(0.2		)	(0.2		)
Total accrued liabilities	7.6			19.0			19.0
Other liabilities
Derivatives designated as hedging instruments:
Interest rate contracts - losses	—			—			9.0
Commodity contracts - losses	0.2			1.8			1.7
Commodity contracts - gains	(0.1		)	—			—
Total other liabilities	0.1			1.8			10.7
Total liability derivatives(1)	$	7.7		$	20.8		$	29.7

(1) Does not include the impact of cash collateral received from or provided to counterparties.

Summary of effects of derivative instruments on condensed statements of income

The following table summarizes the effects of derivative instruments on our condensed statements of operations:

		Amount of Gain (Loss)
		Three Months Ended June 30,						Six Months Ended June 30,
	Location of Gain (Loss)	2020			2019			2020			2019
Derivatives – Cash Flow Hedges		($ in millions)
Recognized in other comprehensive loss:
Commodity contracts	———	$	29.9		$	(21.5	)	$	(5.2	)	$	(27.7	)
Interest rate contracts	———	—			(0.7		)	—			(1.1		)
		$	29.9		$	(22.2	)	$	(5.2	)	$	(28.8	)
Reclassified from accumulated other comprehensive loss into income:
Interest rate contracts	Interest expense	$	—		$	1.2		$	—		$	2.5
Commodity contracts	Cost of goods sold	(9.3		)	(7.5		)	(20.9		)	(11.0		)
		$	(9.3	)	$	(6.3	)	$	(20.9	)	$	(8.5	)
Derivatives – Fair Value Hedges
Interest rate contracts	Interest expense	$	—		$	(1.0	)	$	—		$	(1.7	)
Derivatives Not Designated as Hedging Instruments
Foreign exchange contracts	Selling and administration	$	0.6		$	(0.6	)	$	7.1		$	(3.0	)

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FAIR VALUE MEASUREMENTS (Tables)

6 Months Ended

Jun. 30, 2020

Fair Value Disclosures [Abstract]

Table of financial instruments measured at fair value

The following table summarizes the assets and liabilities measured at fair value in the condensed balance sheets:

	Fair Value Measurements
Balance at June 30, 2020	Level 1		Level 2		Level 3		Total
Assets	($ in millions)
Commodity contracts	$	—	$	4.6	$	—	$	4.6
Foreign exchange contracts	—		2.4		—		2.4
Total assets	$	—	$	7.0	$	—	$	7.0
Liabilities
Commodity contracts	$	—	$	6.5	$	—	$	6.5
Foreign exchange contracts	—		1.2		—		1.2
Total liabilities	$	—	$	7.7	$	—	$	7.7
Balance at December 31, 2019
Assets
Commodity contracts	$	—	$	2.0	$	—	$	2.0
Foreign exchange contracts	—		0.6		—		0.6
Total assets	$	—	$	2.6	$	—	$	2.6
Liabilities
Commodity contracts	$	—	$	19.6	$	—	$	19.6
Foreign exchange contracts	—		1.2		—		1.2
Total liabilities	$	—	$	20.8	$	—	$	20.8
Balance at June 30, 2019
Assets
Interest rate swaps	$	—	$	1.7	$	—	$	1.7
Commodity contracts	—		0.7		—		0.7
Foreign exchange contracts	—		0.1		—		0.1
Total assets	$	—	$	2.5	$	—	$	2.5
Liabilities
Interest rate swaps	$	—	$	9.0	$	—	$	9.0
Commodity contracts	—		20.0		—		20.0
Foreign exchange contracts	—		0.7		—		0.7
Total liabilities	$	—	$	29.7	$	—	$	29.7

Fair value of debt table

The following table summarizes the fair value measurements of debt and the actual debt recorded on our condensed balance sheets:

	Fair Value Measurements								Amount recorded on balance sheets
	Level 1		Level 2		Level 3		Total
	($ in millions)
Balance at June 30, 2020	$	—	$	3,901.7	$	153.0	$	4,054.7	$	4,075.7
Balance at December 31, 2019	—		3,417.5		153.0		3,570.5		3,340.8
Balance at June 30, 2019	—		3,262.6		153.0		3,415.6		3,233.7

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SUPPLEMENTAL GUARANTOR FINANCIAL INFORMATION (Tables)

6 Months Ended

Jun. 30, 2020

Supplemental Guarantor Financial Information [Abstract]

Supplemental Guarantor Financial Information Balance Sheets

CONDENSED CONSOLIDATING BALANCE SHEETS
June 30, 2020
(In millions)
(Unaudited)
	Parent Guarantor			Issuer		Subsidiary Non-Guarantor			Eliminations			Total
Assets
Current assets:
Cash and cash equivalents	$	56.9		$	—	$	181.0		$	—		$	237.9
Receivables, net	51.1			—		649.1			—			700.2
Intercompany receivables	—			—		2,587.6			(2,587.6		)	—
Income taxes receivable	10.9			—		8.3			(1.6		)	17.6
Inventories, net	131.4			—		487.7			—			619.1
Other current assets	259.8			—		1.0			(218.8		)	42.0
Total current assets	510.1			—		3,914.7			(2,808.0		)	1,616.8
Property, plant and equipment, net	705.5			—		2,529.4			—			3,234.9
Operating lease assets, net	44.2			—		327.6			—			371.8
Investment in subsidiaries	6,942.1			4,262.9		—			(11,205.0		)	—
Deferred income taxes	58.2			—		38.2			(58.1		)	38.3
Other assets	23.6			—		1,156.1			—			1,179.7
Long-term receivables—affiliates	73.4			560.2		—			(633.6		)	—
Intangible assets, net	0.2			—		416.7			—			416.9
Goodwill	—			966.3		1,153.4			—			2,119.7
Total assets	$	8,357.3		$	5,789.4	$	9,536.1		$	(14,704.7	)	$	8,978.1
Liabilities and Shareholders’ Equity
Current liabilities:
Current installments of long-term debt	$	1.8		$	—	$	—		$	—		$	1.8
Accounts payable	—			—		526.3			(5.5		)	520.8
Intercompany payables	2,587.6			—		—			(2,587.6		)	—
Income taxes payable	—			—		9.3			(1.6		)	7.7
Current operating lease liabilities	8.4			—		68.9			—			77.3
Accrued liabilities	188.8			—		345.4			(215.5		)	318.7
Total current liabilities	2,786.6			—		949.9			(2,810.2		)	926.3
Long-term debt	2,623.9			1,209.7		240.3			—			4,073.9
Operating lease liabilities	37.0			—		262.2			—			299.2
Accrued pension liability	463.2			—		304.8			—			768.0
Deferred income taxes	—			6.6		466.0			(58.1		)	414.5
Long-term payables—affiliates	—			—		633.6			(633.6		)	—
Other liabilities	257.7			5.6		44.0			—			307.3
Total liabilities	6,168.4			1,221.9		2,900.8			(3,501.9		)	6,789.2
Commitments and contingencies
Shareholders’ equity:
Common stock	157.9			—		14.6			(14.6		)	157.9
Additional paid-in capital	2,127.0			4,125.7		4,808.2			(8,933.9		)	2,127.0
Accumulated other comprehensive loss	(773.9		)	—		(7.5		)	7.5			(773.9		)
Retained earnings	677.9			441.8		1,820.0			(2,261.8		)	677.9
Total shareholders’ equity	2,188.9			4,567.5		6,635.3			(11,202.8		)	2,188.9
Total liabilities and shareholders’ equity	$	8,357.3		$	5,789.4	$	9,536.1		$	(14,704.7	)	$	8,978.1

CONDENSED CONSOLIDATING BALANCE SHEETS
December 31, 2019
(In millions)
(Unaudited)
	Parent Guarantor			Issuer		Subsidiary Non-Guarantor			Eliminations			Total
Assets
Current assets:
Cash and cash equivalents	$	11.6		$	—	$	209.3		$	—		$	220.9
Receivables, net	78.3			—		686.8			(4.7		)	760.4
Intercompany receivables	—			—		2,815.5			(2,815.5		)	—
Income taxes receivable	1.6			—		12.3			—			13.9
Inventories, net	157.1			—		538.6			—			695.7
Other current assets	231.4			—		0.2			(208.5		)	23.1
Total current assets	480.0			—		4,262.7			(3,028.7		)	1,714.0
Property, plant and equipment, net	699.0			—		2,624.8			—			3,323.8
Operating lease assets, net	47.4			—		330.4			—			377.8
Investment in subsidiaries	7,048.2			4,353.5		—			(11,401.7		)	—
Deferred income taxes	1.7			—		34.7			(1.1		)	35.3
Other assets	20.9			—		1,148.2			—			1,169.1
Long-term receivables—affiliates	73.4			605.8		—			(679.2		)	—
Intangible assets, net	0.3			—		447.8			—			448.1
Goodwill	—			966.3		1,153.4			—			2,119.7
Total assets	$	8,370.9		$	5,925.6	$	10,002.0		$	(15,110.7	)	$	9,187.8
Liabilities and Shareholders’ Equity
Current liabilities:
Current installments of long-term debt	$	2.1		$	—	$	—		$	—		$	2.1
Accounts payable	—			—		660.6			(8.7		)	651.9
Intercompany payables	2,815.5			—		—			(2,815.5		)	—
Income taxes payable	11.5			—		8.3			—			19.8
Current operating lease liabilities	8.2			—		71.1			—			79.3
Accrued liabilities	183.7			—		350.8			(205.4		)	329.1
Total current liabilities	3,021.0			—		1,090.8			(3,029.6		)	1,082.2
Long-term debt	2,130.0			1,208.7		—			—			3,338.7
Operating lease liabilities	40.4			—		263.0			—			303.4
Accrued pension liability	496.9			—		300.8			—			797.7
Deferred income taxes	—			6.5		449.2			(1.2		)	454.5
Long-term payables—affiliates	—			—		679.2			(679.2		)	—
Other liabilities	265.1			5.6		523.1			—			793.8
Total liabilities	5,953.4			1,220.8		3,306.1			(3,710.0		)	6,770.3
Commitments and contingencies
Shareholders' equity:
Common stock	157.7			—		14.6			(14.6		)	157.7
Additional paid-in capital	2,122.1			4,125.7		4,808.2			(8,933.9		)	2,122.1
Accumulated other comprehensive loss	(803.4		)	—		(6.5		)	6.5			(803.4		)
Retained earnings	941.1			579.1		1,879.6			(2,458.7		)	941.1
Total shareholders’ equity	2,417.5			4,704.8		6,695.9			(11,400.7		)	2,417.5
Total liabilities and shareholders’ equity	$	8,370.9		$	5,925.6	$	10,002.0		$	(15,110.7	)	$	9,187.8

CONDENSED CONSOLIDATING BALANCE SHEETS
June 30, 2019
(In millions)
(Unaudited)
	Parent Guarantor			Issuer		Subsidiary Non-Guarantor			Eliminations			Total
Assets
Current assets:
Cash and cash equivalents	$	3.7		$	—	$	123.2		$	—		$	126.9
Receivables, net	105.2			—		743.0			—			848.2
Intercompany receivables	—			—		2,804.3			(2,804.3		)	—
Income taxes receivable	16.2			—		7.2			—			23.4
Inventories, net	179.8			—		519.1			—			698.9
Other current assets	225.9			—		0.8			(197.9		)	28.8
Total current assets	530.8			—		4,197.6			(3,002.2		)	1,726.2
Property, plant and equipment, net	687.3			—		2,723.2			—			3,410.5
Operating lease assets, net	48.5			—		247.3			—			295.8
Investment in subsidiaries	7,028.6			4,330.9		—			(11,359.5		)	—
Deferred income taxes	3.9			—		29.0			(4.8		)	28.1
Other assets	14.3			—		1,160.2			—			1,174.5
Long-term receivables—affiliates	—			1,141.7		—			(1,141.7		)	—
Intangible assets, net	0.3			—		480.3			—			480.6
Goodwill	—			966.3		1,153.3			—			2,119.6
Total assets	$	8,313.7		$	6,438.9	$	9,990.9		$	(15,508.2	)	$	9,235.3
Liabilities and Shareholders’ Equity
Current liabilities:
Current installments of long-term debt	$	1.1		$	—	$	—		$	—		$	1.1
Accounts payable	15.9			—		658.6			(5.3		)	669.2
Intercompany payables	2,804.3			—		—			(2,804.3		)	—
Income taxes payable	—			—		9.5			—			9.5
Current operating lease liabilities	8.2			—		63.2			—			71.4
Accrued liabilities	176.9			—		317.1			(195.1		)	298.9
Total current liabilities	3,006.4			—		1,048.4			(3,004.7		)	1,050.1
Long-term debt	1,385.7			1,696.9		150.0			—			3,232.6
Operating lease liabilities	41.3			—		188.0			—			229.3
Accrued pension liability	414.6			—		239.0			—			653.6
Deferred income taxes	—			4.9		506.3			(4.8		)	506.4
Long-term payables—affiliates	419.6			—		722.1			(1,141.7		)	—
Other liabilities	275.3			5.5		511.7			—			792.5
Total liabilities	5,542.9			1,707.3		3,365.5			(4,151.2		)	6,464.5
Commitments and contingencies
Shareholders' equity:
Common stock	164.3			—		14.6			(14.6		)	164.3
Additional paid-in capital	2,229.2			4,125.7		4,808.2			(8,933.9		)	2,229.2
Accumulated other comprehensive loss	(660.4		)	—		(10.0		)	10.0			(660.4		)
Retained earnings	1,037.7			605.9		1,812.6			(2,418.5		)	1,037.7
Total shareholders’ equity	2,770.8			4,731.6		6,625.4			(11,357.0		)	2,770.8
Total liabilities and shareholders’ equity	$	8,313.7		$	6,438.9	$	9,990.9		$	(15,508.2	)	$	9,235.3

Supplemental Guarantor Financial Information Statement of Operations

CONDENSED CONSOLIDATING STATEMENTS OF OPERATIONS
Three Months Ended June 30, 2020
(In millions)
(Unaudited)
	Parent Guarantor			Issuer			Subsidiary Non-Guarantor			Eliminations			Total
Sales	$	346.9		$	—		$	1,023.8		$	(129.5	)	$	1,241.2
Operating expenses:
Cost of goods sold	319.5			—			1,045.7			(129.5		)	1,235.7
Selling and administration	69.0			—			30.7			—			99.7
Restructuring charges	—			—			1.7			—			1.7
Other operating income	0.1			—			—			—			0.1
Operating loss	(41.5		)	—			(54.3		)	—			(95.8		)
Equity loss in subsidiaries	(65.6		)	(59.5		)	—			125.1			—
Interest expense	39.3			30.6			0.6			(1.1		)	69.4
Interest income	1.3			—			—			(1.1		)	0.2
Non-operating pension income (expense)	6.6			—			(1.7		)	—			4.9
Loss before taxes	(138.5		)	(90.1		)	(56.6		)	125.1			(160.1		)
Income tax benefit	(18.4		)	(7.2		)	(14.4		)	—			(40.0		)
Net loss	$	(120.1	)	$	(82.9	)	$	(42.2	)	$	125.1		$	(120.1	)

CONDENSED CONSOLIDATING STATEMENTS OF OPERATIONS
Six Months Ended June 30, 2020
(In millions)
(Unaudited)
	Parent Guarantor			Issuer			Subsidiary Non-Guarantor			Eliminations			Total
Sales	$	700.2		$	—		$	2,225.6		$	(259.5	)	$	2,666.3
Operating expenses:
Cost of goods sold	653.1			—			2,216.3			(259.5		)	2,609.9
Selling and administration	108.9			—			87.5			—			196.4
Restructuring charges	—			—			3.4			—			3.4
Other operating income	0.1			—			—			—			0.1
Operating loss	(61.7		)	—			(81.6		)	—			(143.3		)
Equity loss in subsidiaries	(114.1		)	(90.6		)	—			204.7			—
Interest expense	71.7			61.2			3.7			(4.1		)	132.5
Interest income	3.4			—			1.0			(4.1		)	0.3
Non-operating pension income (expense)	13.1			—			(3.6		)	—			9.5
Loss before taxes	(231.0		)	(151.8		)	(87.9		)	204.7			(266.0		)
Income tax benefit	(30.9		)	(14.5		)	(20.5		)	—			(65.9		)
Net loss	$	(200.1	)	$	(137.3	)	$	(67.4	)	$	204.7		$	(200.1	)

CONDENSED CONSOLIDATING STATEMENTS OF OPERATIONS
Three Months Ended June 30, 2019
(In millions)
(Unaudited)
	Parent Guarantor			Issuer			Subsidiary Non-Guarantor			Eliminations			Total
Sales	$	324.0		$	—		$	1,397.3		$	(128.4	)	$	1,592.9
Operating expenses:
Cost of goods sold	309.8			—			1,282.3			(128.4		)	1,463.7
Selling and administration	47.8			—			49.2			—			97.0
Restructuring charges	—			—			3.8			—			3.8
Other operating (expense) income	(2.3		)	—			2.4			—			0.1
Operating (loss) income	(35.9		)	—			64.4			—			28.5
Equity income (loss) in subsidiaries	10.9			(8.6		)	—			(2.3		)	—
Interest expense	18.3			35.7			6.5			(2.6		)	57.9
Interest income	2.0			—			0.9			(2.6		)	0.3
Non-operating pension income (expense)	5.7			—			(1.5		)	—			4.2
Income (loss) before taxes	(35.6		)	(44.3		)	57.3			(2.3		)	(24.9		)
Income tax (benefit) provision	(15.6		)	(8.7		)	19.4			—			(4.9		)
Net (loss) income	$	(20.0	)	$	(35.6	)	$	37.9		$	(2.3	)	$	(20.0	)

CONDENSED CONSOLIDATING STATEMENTS OF OPERATIONS
Six Months Ended June 30, 2019
(In millions)
(Unaudited)
	Parent Guarantor			Issuer			Subsidiary Non-Guarantor			Eliminations			Total
Sales	$	656.8		$	—		$	2,725.0		$	(235.5	)	$	3,146.3
Operating expenses:
Cost of goods sold	613.9			—			2,432.6			(235.5		)	2,811.0
Selling and administration	99.6			—			104.4			—			204.0
Restructuring charges	1.4			—			6.4			—			7.8
Other operating (expense) income	(4.4		)	—			4.6			—			0.2
Operating (loss) income	(62.5		)	—			186.2			—			123.7
Equity income in subsidiaries	73.5			44.0			—			(117.5		)	—
Interest expense	35.7			71.8			11.7			(3.9		)	115.3
Interest income	2.6			—			1.8			(3.9		)	0.5
Non-operating pension income (expense)	11.1			—			(3.0		)	—			8.1
Other income	11.2			—			—			—			11.2
Income (loss) before taxes	0.2			(27.8		)	173.3			(117.5		)	28.2
Income tax (benefit) provision	(21.5		)	(17.4		)	45.4			—			6.5
Net income (loss)	$	21.7		$	(10.4	)	$	127.9		$	(117.5	)	$	21.7

Supplemental Guarantor Financial Information Statements Of Comprehensive Income

CONDENSED CONSOLIDATING STATEMENTS OF COMPREHENSIVE INCOME (LOSS)
Three Months Ended June 30, 2020
(In millions)
(Unaudited)
	Parent Guarantor			Issuer			Subsidiary Non-Guarantor			Eliminations		Total
Net loss	$	(120.1	)	$	(82.9	)	$	(42.2	)	$	125.1	$	(120.1	)
Other comprehensive income, net of tax:
Foreign currency translation adjustments, net	—			—			8.2			—		8.2
Unrealized gains on derivative contracts, net	30.0			—			—			—		30.0
Amortization of prior service costs and actuarial losses, net	7.6			—			1.4			—		9.0
Total other comprehensive income, net of tax	37.6			—			9.6			—		47.2
Comprehensive loss	$	(82.5	)	$	(82.9	)	$	(32.6	)	$	125.1	$	(72.9	)

CONDENSED CONSOLIDATING STATEMENTS OF COMPREHENSIVE INCOME (LOSS)
Six Months Ended June 30, 2020
(In millions)
(Unaudited)
	Parent Guarantor			Issuer			Subsidiary Non-Guarantor			Eliminations		Total
Net loss	$	(200.1	)	$	(137.3	)	$	(67.4	)	$	204.7	$	(200.1	)
Other comprehensive income, net of tax:
Foreign currency translation adjustments, net	—			—			(0.8		)	—		(0.8		)
Unrealized gains on derivative contracts, net	12.1			—			—			—		12.1
Amortization of prior service costs and actuarial losses, net	15.5			—			2.7			—		18.2
Total other comprehensive income, net of tax	27.6			—			1.9			—		29.5
Comprehensive loss	$	(172.5	)	$	(137.3	)	$	(65.5	)	$	204.7	$	(170.6	)

CONDENSED CONSOLIDATING STATEMENTS OF COMPREHENSIVE INCOME (LOSS)
Three Months Ended June 30, 2019
(In millions)
(Unaudited)
	Parent Guarantor			Issuer			Subsidiary Non-Guarantor		Eliminations			Total
Net (loss) income	$	(20.0	)	$	(35.6	)	$	37.9	$	(2.3	)	$	(20.0	)
Other comprehensive (loss) income, net of tax:
Foreign currency translation adjustments, net	—			—			3.3		—			3.3
Unrealized losses on derivative contracts, net	(12.1		)	—			—		—			(12.1		)
Amortization of prior service costs and actuarial losses, net	4.8			—			0.5		—			5.3
Total other comprehensive (loss) income, net of tax	(7.3		)	—			3.8		—			(3.5		)
Comprehensive (loss) income	$	(27.3	)	$	(35.6	)	$	41.7	$	(2.3	)	$	(23.5	)

CONDENSED CONSOLIDATING STATEMENTS OF COMPREHENSIVE INCOME (LOSS)
Six Months Ended June 30, 2019
(In millions)
(Unaudited)
	Parent Guarantor			Issuer			Subsidiary Non-Guarantor			Eliminations			Total
Net income (loss)	$	21.7		$	(10.4	)	$	127.9		$	(117.5	)	$	21.7
Other comprehensive loss, net of tax:
Foreign currency translation adjustments, net	—			—			(5.0		)	—			(5.0		)
Unrealized losses on derivative contracts, net	(15.4		)	—			—			—			(15.4		)
Amortization of prior service costs and actuarial losses, net	9.9			—			1.1			—			11.0
Total other comprehensive loss, net of tax	(5.5		)	—			(3.9		)	—			(9.4		)
Comprehensive income (loss)	$	16.2		$	(10.4	)	$	124.0		$	(117.5	)	$	12.3

Supplemental Guarantor Financial Information Statements Of Cash Flows

CONDENSED CONSOLIDATING STATEMENTS OF CASH FLOWS
Six Months Ended June 30, 2020
(In millions)
(Unaudited)
	Parent Guarantor			Issuer		Subsidiary Non-Guarantor			Eliminations		Total
Net operating activities	$	219.1		$	—	$	(163.7	)	$	—	$	55.4
Investing Activities
Capital expenditures	(61.5		)	—		(105.0		)	—		(166.5		)
Payments under ethylene long-term supply contracts	—			—		(461.0		)	—		(461.0		)
Payments under other long-term supply contracts	—			—		(75.8		)	—		(75.8		)
Net investing activities	(61.5		)	—		(641.8		)	—		(703.3		)
Financing Activities
Long-term debt:
Borrowings	672.5			—		490.7			—		1,163.2
Repayments	(175.8		)	—		(250.0		)	—		(425.8		)
Stock options exercised	0.5			—		—			—		0.5
Dividends paid	(63.1		)	—		—			—		(63.1		)
Debt issuance costs	(9.6		)	—		—			—		(9.6		)
Intercompany financing activities	(536.8		)	—		536.8			—		—
Net financing activities	(112.3		)	—		777.5			—		665.2
Effect of exchange rate changes on cash and cash equivalents	—			—		(0.3		)	—		(0.3		)
Net increase (decrease) in cash and cash equivalents	45.3			—		(28.3		)	—		17.0
Cash and cash equivalents, beginning of year	11.6			—		209.3			—		220.9
Cash and cash equivalents, end of period	$	56.9		$	—	$	181.0		$	—	$	237.9

CONDENSED CONSOLIDATING STATEMENTS OF CASH FLOWS
Six Months Ended June 30, 2019
(In millions)
(Unaudited)
	Parent Guarantor			Issuer			Subsidiary Non-Guarantor			Eliminations		Total
Net operating activities	$	120.1		$	—		$	116.0		$	—	$	236.1
Investing Activities
Capital expenditures	(86.9		)	—			(104.4		)	—		(191.3		)
Proceeds from disposition of non-consolidated affiliate	20.0			—			—			—		20.0
Net investing activities	(66.9		)	—			(104.4		)	—		(171.3		)
Financing Activities
Long-term debt:
Borrowings	—			—			25.0			—		25.0
Repayments	(0.6		)	(50.0		)	—			—		(50.6		)
Common stock repurchased and retired	(26.7		)	—			—			—		(26.7		)
Stock options exercised	1.5			—			—			—		1.5
Dividends paid	(65.7		)	—			—			—		(65.7		)
Intercompany financing activities	(50.0		)	50.0			—			—		—
Net financing activities	(141.5		)	—			25.0			—		(116.5		)
Effect of exchange rate changes on cash and cash equivalents	—			—			(0.2		)	—		(0.2		)
Net (decrease) increase in cash and cash equivalents	(88.3		)	—			36.4			—		(51.9		)
Cash and cash equivalents, beginning of year	92.0			—			86.8			—		178.8
Cash and cash equivalents, end of period	$	3.7		$	—		$	123.2		$	—	$	126.9

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RESTRUCTURING CHARGES (Details 1) $ in Millions	3 Months Ended				6 Months Ended		7 Months Ended	51 Months Ended
	Jun. 30, 2020 USD ($)	Mar. 31, 2020 USD ($)	Jun. 30, 2019 USD ($)	Mar. 31, 2019 USD ($)	Jun. 30, 2020 USD ($)	Jun. 30, 2019 USD ($)	Jun. 30, 2020 USD ($)	Jun. 30, 2020 USD ($)	Dec. 31, 2019 USD ($)	Dec. 11, 2019 T	Dec. 31, 2018 USD ($)	Mar. 21, 2016 T
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 1.7	$ 1.7	$ 3.8	$ 4.0	$ 3.4	$ 7.8		$ 243.7
Inception to date Amounts Utilized (cash)								101.5
Inception to date Amounts Utilized (non-cash)								139.6
Accrued restructuring costs	2.6		6.2		2.6	6.2	$ 2.6	2.6	$ 3.1		$ 8.2
Freeport | Chlor Alkali Products and Vinyls
Restructuring Cost and Reserve [Line Items]
Freeport Chlor Alkali Capacity Reduction | T										230,000
Restructuring charges	0.5				0.5		59.4
Additional restructuring and related expected cost	50.0				50.0		50.0	50.0
Geelong | Winchester
Restructuring Cost and Reserve [Line Items]
Restructuring charges			0.2			0.3
Other Winchester | Winchester
Restructuring Cost and Reserve [Line Items]
Restructuring charges						1.4
Capacity Reductions | Chlor Alkali Products and Vinyls
Restructuring Cost and Reserve [Line Items]
Restructuring charges	1.2		$ 3.6		2.9	$ 6.1		178.4
Additional restructuring and related expected cost	$ 3.0				$ 3.0		$ 3.0	$ 3.0
Total Product Segment Production Capacity Decrease | T												433,000
Henderson Product Segment Production Capacity Decrease | T												153,000
Niagara Product Segment Production Capacity | T												300,000
Reduced Niagara Segment Production Capacity | T												240,000
Freeport Product Segment Production Capacity Decrease | T												220,000

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RESTRUCTURING CHARGES (Details 2) - USD ($) $ in Millions	3 Months Ended				6 Months Ended		51 Months Ended
	Jun. 30, 2020	Mar. 31, 2020	Jun. 30, 2019	Mar. 31, 2019	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Dec. 31, 2019	Dec. 31, 2018
Restructuring Cost and Reserve [Line Items]
Accrued restructuring costs	$ 2.6		$ 6.2		$ 2.6	$ 6.2	$ 2.6	$ 3.1	$ 8.2
Restructuring charges	1.7	$ 1.7	3.8	$ 4.0	3.4	7.8	243.7
Amounts utilized					(3.9)	(9.8)
Employee severance and related benefit costs
Restructuring Cost and Reserve [Line Items]
Accrued restructuring costs	0.0		0.0		0.0	0.0	0.0	0.0	1.5
Restructuring charges	0.0	0.1	0.4	1.4			9.4
Amounts utilized					(0.1)	(3.3)
Lease and other contract termination costs
Restructuring Cost and Reserve [Line Items]
Accrued restructuring costs	2.6		5.3		2.6	5.3	2.6	3.1	6.0
Restructuring charges	0.0	0.1	0.2	0.1			41.4
Amounts utilized					(0.6)	(1.0)
Employee relocation costs
Restructuring Cost and Reserve [Line Items]
Restructuring charges							1.7
Facility exit costs
Restructuring Cost and Reserve [Line Items]
Accrued restructuring costs	0.0		0.9		0.0	0.9	0.0	$ 0.0	$ 0.7
Restructuring charges	$ 1.7	$ 1.5	$ 3.2	$ 2.5			51.6
Amounts utilized					$ (3.2)	$ (5.5)
Write-off of equipment and facility
Restructuring Cost and Reserve [Line Items]
Restructuring charges							$ 139.6

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RESTRUCTURING CHARGES (Details 3) - USD ($) $ in Millions	3 Months Ended				6 Months Ended		7 Months Ended	19 Months Ended	51 Months Ended
	Jun. 30, 2020	Mar. 31, 2020	Jun. 30, 2019	Mar. 31, 2019	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2020	Jun. 30, 2020
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 1.7	$ 1.7	$ 3.8	$ 4.0	$ 3.4	$ 7.8			$ 243.7
Write-off of equipment and facility
Restructuring Cost and Reserve [Line Items]
Restructuring charges									139.6
Employee severance and related benefit costs
Restructuring Cost and Reserve [Line Items]
Restructuring charges	0.0	0.1	0.4	1.4					9.4
Facility exit costs
Restructuring Cost and Reserve [Line Items]
Restructuring charges	1.7	1.5	3.2	2.5					51.6
Employee relocation costs
Restructuring Cost and Reserve [Line Items]
Restructuring charges									1.7
Lease and other contract termination costs
Restructuring Cost and Reserve [Line Items]
Restructuring charges	0.0	$ 0.1	0.2	$ 0.1					41.4
Freeport | Chlor Alkali Products and Vinyls
Restructuring Cost and Reserve [Line Items]
Restructuring charges	0.5				0.5		$ 59.4
Freeport | Chlor Alkali Products and Vinyls | Write-off of equipment and facility
Restructuring Cost and Reserve [Line Items]
Restructuring charges							58.9
Freeport | Chlor Alkali Products and Vinyls | Employee severance and related benefit costs
Restructuring Cost and Reserve [Line Items]
Restructuring charges							0.0
Freeport | Chlor Alkali Products and Vinyls | Facility exit costs
Restructuring Cost and Reserve [Line Items]
Restructuring charges							0.5
Freeport | Chlor Alkali Products and Vinyls | Employee relocation costs
Restructuring Cost and Reserve [Line Items]
Restructuring charges							0.0
Freeport | Chlor Alkali Products and Vinyls | Lease and other contract termination costs
Restructuring Cost and Reserve [Line Items]
Restructuring charges							$ 0.0
Capacity Reductions | Chlor Alkali Products and Vinyls
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 1.2		$ 3.6		$ 2.9	$ 6.1			178.4
Capacity Reductions | Chlor Alkali Products and Vinyls | Write-off of equipment and facility
Restructuring Cost and Reserve [Line Items]
Restructuring charges									78.1
Capacity Reductions | Chlor Alkali Products and Vinyls | Employee severance and related benefit costs
Restructuring Cost and Reserve [Line Items]
Restructuring charges									6.7
Capacity Reductions | Chlor Alkali Products and Vinyls | Facility exit costs
Restructuring Cost and Reserve [Line Items]
Restructuring charges									50.9
Capacity Reductions | Chlor Alkali Products and Vinyls | Employee relocation costs
Restructuring Cost and Reserve [Line Items]
Restructuring charges									1.7
Capacity Reductions | Chlor Alkali Products and Vinyls | Lease and other contract termination costs
Restructuring Cost and Reserve [Line Items]
Restructuring charges									$ 41.0
Total Winchester | Winchester
Restructuring Cost and Reserve [Line Items]
Restructuring charges								$ 5.9
Total Winchester | Winchester | Write-off of equipment and facility
Restructuring Cost and Reserve [Line Items]
Restructuring charges								2.6
Total Winchester | Winchester | Employee severance and related benefit costs
Restructuring Cost and Reserve [Line Items]
Restructuring charges								2.7
Total Winchester | Winchester | Facility exit costs
Restructuring Cost and Reserve [Line Items]
Restructuring charges								0.2
Total Winchester | Winchester | Employee relocation costs
Restructuring Cost and Reserve [Line Items]
Restructuring charges								0.0
Total Winchester | Winchester | Lease and other contract termination costs
Restructuring Cost and Reserve [Line Items]
Restructuring charges								$ 0.4

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ACCOUNTS RECEIVABLES (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019	May 08, 2020	Apr. 23, 2020	Mar. 27, 2020	Dec. 31, 2019	Jul. 16, 2019	Dec. 31, 2018	Dec. 31, 2016
Accounts, Notes, Loans and Financing Receivable [Line Items]
Receivables Financing Agreement Maximum Borrowing Capacity											$ 250.0
Receivables Financing Agreement Collateral	$ 326.4		$ 326.4
Receivables Financing Agreement Outstanding Balance	240.7	$ 150.0	240.7	$ 150.0				$ 0.0
Receivables Financing Agreement Available Borrowing Capacity	0.0		0.0
AR Facilities, Maximum Outstanding Sales	315.0		315.0
AR Facilities, Amount Outstanding to be Serviced	61.7	98.7	61.7	98.7				63.1		$ 132.4
AR Facilities, Gross receivables sold			457.5	522.4
AR Facilities, Payments received from customers on sold accounts			(458.9)	(556.1)
AR Facilities, Interest Expense	0.4	1.0	1.0	1.5
AR Facilities, Recourse Liability	$ 0.0	$ 0.0	0.0	$ 0.0				$ 0.0
AR Securitization
Accounts, Notes, Loans and Financing Receivable [Line Items]
Receivables Financing Agreement Maximum Borrowing Capacity						$ 250.0			$ 10.0
Receivables Financing Agreement Amount Borrowed			$ 240.7
Receivables Financing Agreement Minimum Borrowing Percentage							50.00%
$1,300.0 million Senior Secured Credit Facility
Accounts, Notes, Loans and Financing Receivable [Line Items]
2020 Senior Secured Credit Facility					$ 1,300.0

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ALLOWANCE FOR DOUBTFUL ACCOUNTS RECEIVABLES (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Accounts Receivable, after Allowance for Credit Loss [Abstract]
Balance at beginning of year			$ 11.9	$ 12.9
Provisions charged	$ 0.5	$ 0.4	0.7	0.9
Write-offs, net of recoveries			0.0	2.1
Foreign currency translation adjustment			(0.1)	0.2
Balance at end of period	$ 12.5	$ 11.9	$ 12.5	$ 11.9

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INVENTORIES (Details) - USD ($) $ in Millions	Jun. 30, 2020	Dec. 31, 2019	Jun. 30, 2019
Inventory Disclosure [Abstract]
Supplies	$ 81.0	$ 80.5	$ 74.6
Raw materials	74.3	74.9	73.1
Work in process	114.9	140.3	140.6
Finished goods	392.7	449.5	469.8
Inventories excluding LIFO reserve	662.9	745.2	758.1
LIFO reserve	(43.8)	(49.5)	(59.2)
Inventories, net	$ 619.1	$ 695.7	$ 698.9

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OTHER ASSETS (Details) - USD ($) $ in Millions		3 Months Ended		6 Months Ended		39 Months Ended
	Jan. 01, 2019	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Dec. 31, 2019	Mar. 31, 2019
Other Assets [Abstract]
Supply contracts		$ 1,137.9	$ 1,131.4	$ 1,137.9	$ 1,131.4	$ 1,137.9	$ 1,112.6
Other		41.8	43.1	41.8	43.1	41.8	56.5
Other assets		1,179.7	1,174.5	1,179.7	1,174.5	1,179.7	$ 1,169.1
Schedule of Equity Method Investments [Line Items]
Bay Gas sale proceeds					20.0
Bay Gas realized gain on sale				0.0	11.2
2020 Supply Contract Payment		461.0
2020 Supply Contract Payment Total Accretion						$ 40.9
2020 Supply Contract Payment Accretion Expense			4.2	4.0	8.2
Amortization of Supply Contracts		$ 9.4	$ 9.4	18.8	18.8
Long-term Other Supply Contract Payments				$ 75.8	0.0
Bay Gas
Schedule of Equity Method Investments [Line Items]
Bay Gas Olin ownership percentage								9.10%
Bay Gas sale proceeds	$ 20.0
Bay Gas realized gain on sale					$ 11.2

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GOODWILL AND INTANGIBLES (Details 1) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Dec. 31, 2019	Dec. 31, 2018
Goodwill [Line Items]
Goodwill	$ 2,119.7	$ 2,119.6	$ 2,119.7	$ 2,119.6
Foreign currency translation adjustment	0.0	0.0
Chlor Alkali Products and Vinyls
Goodwill [Line Items]
Goodwill	1,832.7	1,832.6	1,832.7	1,832.6
Foreign currency translation adjustment	0.0	0.0
Epoxy
Goodwill [Line Items]
Goodwill	287.0	287.0	$ 287.0	$ 287.0
Foreign currency translation adjustment	$ 0.0	$ 0.0

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GOODWILL AND INTANGIBLES (Details 2) - USD ($) $ in Millions	Jun. 30, 2020	Dec. 31, 2019	Jun. 30, 2019
Schedule Of Finite Lived And Indefinite Lived Intangible Assets By Major Class [Line Items]
Finite-Lived Intangible Assets, Gross	$ 767.2	$ 767.4	$ 768.5
Finite-Lived Intangible Assets, Accumulated Amortization	(350.3)	(319.3)	(287.9)
Finite-Lived Intangible Assets, Net	416.9	448.1	480.6
Customers, customer contracts and relationships
Schedule Of Finite Lived And Indefinite Lived Intangible Assets By Major Class [Line Items]
Finite-Lived Intangible Assets, Gross	673.3	673.5	674.4
Finite-Lived Intangible Assets, Accumulated Amortization	(285.3)	(260.9)	(236.3)
Finite-Lived Intangible Assets, Net	388.0	412.6	438.1
Trade name
Schedule Of Finite Lived And Indefinite Lived Intangible Assets By Major Class [Line Items]
Finite-Lived Intangible Assets, Gross	7.0	7.0	7.0
Finite-Lived Intangible Assets, Accumulated Amortization	(6.7)	(6.0)	(5.3)
Finite-Lived Intangible Assets, Net	0.3	1.0	1.7
Acquired technology
Schedule Of Finite Lived And Indefinite Lived Intangible Assets By Major Class [Line Items]
Finite-Lived Intangible Assets, Gross	85.1	85.1	85.3
Finite-Lived Intangible Assets, Accumulated Amortization	(57.7)	(51.8)	(45.7)
Finite-Lived Intangible Assets, Net	27.4	33.3	39.6
Other
Schedule Of Finite Lived And Indefinite Lived Intangible Assets By Major Class [Line Items]
Finite-Lived Intangible Assets, Gross	1.8	1.8	1.8
Finite-Lived Intangible Assets, Accumulated Amortization	(0.6)	(0.6)	(0.6)
Finite-Lived Intangible Assets, Net	$ 1.2	$ 1.2	$ 1.2

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EARNINGS PER SHARE (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended				6 Months Ended
	Jun. 30, 2020	Mar. 31, 2020	Jun. 30, 2019	Mar. 31, 2019	Jun. 30, 2020	Jun. 30, 2019
Earnings Per Share [Abstract]
Net (loss) income	$ (120.1)	$ (80.0)	$ (20.0)	$ 41.7	$ (200.1)	$ 21.7
Basic shares	157.9		164.6		157.8	164.8
Basic net (loss) income per share	$ (0.76)		$ (0.12)		$ (1.27)	$ 0.13
Earnings Per Share, Diluted [Abstract]
Basic shares	157.9		164.6		157.8	164.8
Stock-based compensation	0.0		0.0		0.0	0.9
Diluted shares	157.9		164.6		157.8	165.7
Diluted net (loss) income per share	$ (0.76)		$ (0.12)		$ (1.27)	$ 0.13
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	10.3		8.0		10.3	5.5

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ENVIRONMENTAL (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019	Dec. 31, 2019
Environmental Remediation Obligations [Abstract]
Provisions charged to income	$ 2.8	$ 22.0	$ 5.4	$ 23.8
Recoveries for costs incurred and expensed	0.0	(4.8)	0.0	(4.8)
Environmental expense	2.8	17.2	5.4	19.0
Revision of remediation estimates resulting from agency action		20.0		20.0
Reserves for future environmental expenditures - total	138.6	144.4	138.6	144.4	$ 139.0
Reserves for future environmental expenditures - noncurrent	$ 121.6	$ 127.4	$ 121.6	$ 127.4	$ 122.0

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COMMITMENTS AND CONTINGENCIES (Details) - USD ($) $ in Millions	Jun. 30, 2020	Dec. 31, 2019	Jun. 30, 2019
Commitments and Contingencies Disclosure [Abstract]
Legal action accrued liabilities	$ 12.4	$ 12.4	$ 14.0

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SHAREHOLDERS' EQUITY (Details) - USD ($) shares in Millions, $ in Millions	3 Months Ended				6 Months Ended		26 Months Ended
	Jun. 30, 2020	Mar. 31, 2020	Jun. 30, 2019	Mar. 31, 2019	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Apr. 26, 2018
Equity, Class of Treasury Stock [Line Items]
Cost of common stock repurchased and retired (in dollars)					$ 0.0	$ 26.7
Stock options exercised					0.1	0.1
Total value of stock options exercised		$ 0.7	$ 0.1	$ 1.4	$ 0.7	$ 1.5
Foreign Currency Translation Adjustment (net of taxes)
Beginning balance		(8.4)		0.7	(8.4)	0.7
Unrealized (losses) gains	$ 8.2	(9.0)	3.3	(8.3)
Reclassification adjustments of losses into income	0.0	0.0	0.0	0.0
Tax benefit (provision)	0.0	0.0	0.0	0.0
Net change					(0.8)	(5.0)
Ending Balance	(9.2)		(4.3)		(9.2)	(4.3)	$ (9.2)
Unrealized (Losses) Gains on Derivative Contracts (net of taxes)
Beginning balance		(13.6)		1.8	(13.6)	1.8
Unrealized (losses) gains	29.9	(35.1)	(22.2)	(6.6)
Reclassification adjustments of losses into income	9.3	11.6	6.3	2.2
Tax benefit (provision)	(9.2)	5.6	3.8	1.1
Net change	30.0		(12.1)		12.1	(15.4)
Ending balance	(1.5)		(13.6)		(1.5)	(13.6)	(1.5)
Pension and Other Postretirement Benefits (net of taxes)
Beginning balance		(781.4)		(653.5)	(781.4)	(653.5)
Unrealized (losses) gains	0.0	0.0	0.0	0.0
Reclassification adjustments of losses into income	11.6	11.9	7.1	7.4
Tax benefit (provision)	(2.6)	(2.7)	(1.8)	(1.7)
Net change					18.2	11.0
Ending balance	(763.2)		(642.5)		(763.2)	(642.5)	(763.2)
Accumulated Other Comprehensive Loss
Beginning balance		(803.4)		(651.0)	(803.4)	(651.0)
Unrealized (losses) gains	38.1	(44.1)	(18.9)	(14.9)
Reclassification adjustments of losses into income	20.9	23.5	13.4	9.6
Tax benefit (provision)	(11.8)	$ 2.9	2.0	$ (0.6)
Net change					29.5	(9.4)
Ending balance	(773.9)		$ (660.4)		$ (773.9)	(660.4)	(773.9)
2018 Share Repurchase Program | Common Stock
Equity, Class of Treasury Stock [Line Items]
Authorized share repurchase program (in dollars)								$ 500.0
Cost of common stock repurchased and retired (in dollars)						$ 26.7	$ 195.9
Total repurchased shares under this program (in shares)					0.0	1.2	10.1
Remaining authorized repurchase amount (in dollars)	$ 304.1				$ 304.1		$ 304.1

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SEGMENT INFORMATION (Details 1) - USD ($) $ in Millions	3 Months Ended				6 Months Ended		51 Months Ended
	Jun. 30, 2020	Mar. 31, 2020	Jun. 30, 2019	Mar. 31, 2019	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020
Sales [Abstract]
Sales	$ 1,241.2		$ 1,592.9		$ 2,666.3	$ 3,146.3
Income (loss) before taxes:
Income (loss) before taxes	(160.1)		(24.9)		(266.0)	28.2
Corporate/Other:
Environmental expense	2.8		22.0		5.4	23.8
Restructuring charges	(1.7)	$ (1.7)	(3.8)	$ (4.0)	(3.4)	(7.8)	$ (243.7)
Other operating income	0.1		0.1		0.1	0.2
Interest expense	(69.4)		(57.9)		(132.5)	(115.3)
Interest income	0.2		0.3		0.3	0.5
Non-operating pension income	4.9		4.2		9.5	8.1
Other income	0.0		0.0		0.0	11.2
Recoveries for costs incurred and expensed	0.0		4.8		0.0	4.8
Chlor Alkali Products and Vinyls
Sales [Abstract]
Sales	651.2		909.2		1,411.1	1,781.4
Income (loss) before taxes:
Income (loss) before taxes	(57.0)		70.7		(91.3)	191.1
Epoxy
Sales [Abstract]
Sales	397.4		518.8		874.6	1,042.8
Income (loss) before taxes:
Income (loss) before taxes	(13.0)		3.9		(1.3)	14.4
Winchester
Sales [Abstract]
Sales	192.6		164.9		380.6	322.1
Income (loss) before taxes:
Income (loss) before taxes	16.0		10.1		26.5	19.2
Corporate/Other
Corporate/Other:
Environmental expense	2.8		17.2		5.4	19.0
Other corporate and unallocated costs	(37.4)		(35.3)		(68.5)	(74.4)
Restructuring charges	$ (1.7)		$ (3.8)		$ (3.4)	$ (7.8)

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SEGMENT INFORMATION (Details 2) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Disaggregation of Revenue [Line Items]
Sales	$ 1,241.2	$ 1,592.9	$ 2,666.3	$ 3,146.3
United States
Disaggregation of Revenue [Line Items]
Sales	751.4	923.2	1,618.2	1,832.6
Europe
Disaggregation of Revenue [Line Items]
Sales	169.5	264.0	396.6	540.8
Other foreign
Disaggregation of Revenue [Line Items]
Sales	320.3	405.7	651.5	772.9
Chlor Alkali Products and Vinyls
Disaggregation of Revenue [Line Items]
Sales	651.2	909.2	1,411.1	1,781.4
Chlor Alkali Products and Vinyls | United States
Disaggregation of Revenue [Line Items]
Sales	450.3	601.0	984.2	1,205.0
Chlor Alkali Products and Vinyls | Europe
Disaggregation of Revenue [Line Items]
Sales	26.8	39.1	57.0	77.7
Chlor Alkali Products and Vinyls | Other foreign
Disaggregation of Revenue [Line Items]
Sales	174.1	269.1	369.9	498.7
Epoxy
Disaggregation of Revenue [Line Items]
Sales	397.4	518.8	874.6	1,042.8
Epoxy | United States
Disaggregation of Revenue [Line Items]
Sales	122.5	175.4	281.3	339.5
Epoxy | Europe
Disaggregation of Revenue [Line Items]
Sales	140.4	222.6	334.8	458.0
Epoxy | Other foreign
Disaggregation of Revenue [Line Items]
Sales	134.5	120.8	258.5	245.3
Winchester
Disaggregation of Revenue [Line Items]
Sales	192.6	164.9	380.6	322.1
Winchester | United States
Disaggregation of Revenue [Line Items]
Sales	178.6	146.8	352.7	288.1
Winchester | Europe
Disaggregation of Revenue [Line Items]
Sales	2.3	2.3	4.8	5.1
Winchester | Other foreign
Disaggregation of Revenue [Line Items]
Sales	$ 11.7	$ 15.8	$ 23.1	$ 28.9

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SEGMENT INFORMATION (Details 3) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Disaggregation of Revenue [Line Items]
Sales	$ 1,241.2	$ 1,592.9	$ 2,666.3	$ 3,146.3
Chlor Alkali Products and Vinyls
Disaggregation of Revenue [Line Items]
Sales	651.2	909.2	1,411.1	1,781.4
Chlor Alkali Products and Vinyls | Caustic soda
Disaggregation of Revenue [Line Items]
Sales	320.2	461.0	680.4	923.1
Chlor Alkali Products and Vinyls | Chlorine, chlorine-derivatives and other co-products
Disaggregation of Revenue [Line Items]
Sales	331.0	448.2	730.7	858.3
Epoxy
Disaggregation of Revenue [Line Items]
Sales	397.4	518.8	874.6	1,042.8
Epoxy | Aromatics and allylics
Disaggregation of Revenue [Line Items]
Sales	167.0	234.8	384.4	478.6
Epoxy | Epoxy resins
Disaggregation of Revenue [Line Items]
Sales	230.4	284.0	490.2	564.2
Winchester
Disaggregation of Revenue [Line Items]
Sales	192.6	164.9	380.6	322.1
Winchester | Commercial
Disaggregation of Revenue [Line Items]
Sales	135.6	103.6	262.7	210.0
Winchester | Military and law enforcement
Disaggregation of Revenue [Line Items]
Sales	$ 57.0	$ 61.3	$ 117.9	$ 112.1

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STOCK-BASED COMPENSATION (Details 1) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Share-based Payment Arrangement [Abstract]
Stock-based compensation	$ 4.3	$ (1.3)	$ 6.3	$ 4.3
Mark-to-market adjustments	(0.1)	(0.9)	(3.1)	0.4
Total expense (benefit)	$ 4.2	$ (2.2)	$ 3.2	$ 4.7

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STOCK-BASED COMPENSATION (Details 2) - $ / shares	6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019
Share-based Payment Arrangement [Abstract]
Dividend yield	4.60%	3.05%
Risk-free interest rate	1.44%	2.51%
Expected volatility	36.00%	34.00%
Expected life (years)	6 years	6 years
Weighted-average grant fair value (per option)	$ 3.64	$ 6.76
Weighted-average exercise price	$ 17.33	$ 26.26
Shares granted	2,665,700	1,575,900

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DEBT (Details 1) $ in Millions		3 Months Ended	6 Months Ended
	Jul. 16, 2019 USD ($)	Jun. 30, 2020 USD ($)	Jun. 30, 2020 USD ($)	Jun. 30, 2019 USD ($)	May 19, 2020	May 08, 2020 USD ($)	Aug. 22, 2012 USD ($)
Debt Instrument [Line Items]
Write-off of Unamortized Deferred Debt Issuance Costs		$ 1.6	$ 1.6
Payment of Debt Issuance Costs			9.6	$ 0.0
Debt Covenant, Secured Debt Exclusion		250.0	250.0
Debt Covenant, Secured Debt		153.0	153.0
$500.0 million Senior Notes Due 2025
Debt Instrument [Line Items]
Proceeds from Issuance of Debt			500.0
Debt Instrument, Interest Rate, Stated Percentage					9.50%
Debt Issuance, Percent of Par Value					99.50%
$1,300.0 million Senior Secured Credit Facility
Debt Instrument [Line Items]
2020 Senior Secured Credit Facility						$ 1,300.0
$2,000.0 million Senior Credit Facility
Debt Instrument [Line Items]
2019 Senior Credit Facility Term	5 years
2019 Senior Credit Facility	$ 2,000.0
$500.0 million Senior Secured Delayed Draw Term Loan
Debt Instrument [Line Items]
Senior Secured Delayed-Draw Term Loan, Maximum Borrowing Capacity						500.0
Annual Required Principal Payment Percent in Years 1 and 2	5.00%
Annual Required Principal Payment Percent in Year 3	7.50%
Annual Required Principal Payment Percent in Years 4 and 5	10.00%
$500.0 million Senior Secured Delayed Draw Term Loan | Maximum
Debt Instrument [Line Items]
Senior Secured Delayed-Draw Term Loan, Number of Draws	3
$800.0 million Senior Secured Revolving Credit Facility
Debt Instrument [Line Items]
Senior Secured Revolving Credit Facility, Maximum Borrowing Capacity						$ 800.0
Letter of Credit Subfacility, Maximum	$ 100.0
Senior Secured Revolving Credit Facility, Remaining Borrowing Capacity		799.6	799.6
Letters of Credit Outstanding, Amount		$ 0.4	$ 0.4
$200.0 million Senior Notes Due 2022
Debt Instrument [Line Items]
Debt Instrument, Face Amount							$ 200.0

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CONTRIBUTING EMPLOYEE OWNERSHIP PLAN (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Defined Contribution Plan Disclosure [Line Items]
Employer contributions to employee ownership plan	$ 6.8	$ 6.9	$ 15.0	$ 16.3
Employer matching contributions to employee ownership plan	$ 0.7	$ 4.0	$ 1.5	$ 7.9
Minimum
Defined Contribution Plan Disclosure [Line Items]
Contribution To Individual Retirement Account Percentage Of Employees Eligible Compensation	5.00%		5.00%
Maximum
Defined Contribution Plan Disclosure [Line Items]
Contribution To Individual Retirement Account Percentage Of Employees Eligible Compensation	7.50%		7.50%

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PENSION PLANS AND RETIREMENT BENEFITS (Details 1) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019
Foreign Plan | Qualified Plan
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined Benefit Plan, Plan Assets, Contributions by Employer	$ 1.2	$ 0.7

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PENSION PLANS AND RETIREMENT BENEFITS (Details 2) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Pension Benefits
Service cost	$ 2.7	$ 2.7	$ 5.7	$ 5.8
Interest cost	18.8	23.7	37.5	47.3
Expected return on plans’ assets	(35.6)	(35.5)	(71.2)	(70.8)
Recognized actuarial loss	11.1	6.6	22.3	13.4
Net periodic benefit (income) cost	(3.0)	(2.5)	(5.7)	(4.3)
Other Postretirement Benefits
Service cost	0.4	0.3	0.7	0.6
Interest cost	0.3	0.5	0.7	0.9
Expected return on plans’ assets	0.0	0.0	0.0	0.0
Recognized actuarial loss	0.5	0.5	1.2	1.1
Net periodic benefit (income) cost	$ 1.2	$ 1.3	$ 2.6	$ 2.6

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INCOME TAXES (Details 1) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Income Tax Disclosure [Abstract]
Effective Tax Rate, Percent	25.00%
Statutory Federal Tax Rate	21.00%	21.00%	21.00%	21.00%
Effective Tax Rate, Discrete Items, net benefit (expense)		$ (0.6)	$ (1.0)	$ 0.3
Effective Tax Rate, Discrete Items, net Percent		22.10%	25.20%	24.10%
Impact on the effective tax rate, if recognized	$ 21.8	$ 34.1	$ 21.8	$ 34.1
Reconciliation of Unrecognized Tax Benefits [Roll Forward]
Balance at beginning of year			22.8	33.8
Decreases for prior year tax positions			(1.8)	0.0
Increases for current year tax positions			1.0	1.2
Balance at end of period	22.0	$ 35.0	22.0	$ 35.0
Significant Change in Unrecognized Tax Benefits is Reasonably Possible, Amount of Unrecorded Benefit	$ 3.8		$ 3.8

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INCOME TAXES (Details 2)	6 Months Ended
	Jun. 30, 2020
United States | Internal Revenue Service (IRS) | Minimum
Income Tax Examination [Line Items]
Open Tax Year	2016
United States | Internal Revenue Service (IRS) | Maximum
Income Tax Examination [Line Items]
Open Tax Year	2019
United States | State and Local Jurisdiction | Minimum
Income Tax Examination [Line Items]
Open Tax Year	2006
United States | State and Local Jurisdiction | Maximum
Income Tax Examination [Line Items]
Open Tax Year	2019
Canada | Foreign Country | Minimum
Income Tax Examination [Line Items]
Open Tax Year	2012
Canada | Foreign Country | Maximum
Income Tax Examination [Line Items]
Open Tax Year	2019
Brazil | Foreign Country | Minimum
Income Tax Examination [Line Items]
Open Tax Year	2014
Brazil | Foreign Country | Maximum
Income Tax Examination [Line Items]
Open Tax Year	2019
Germany | Foreign Country | Minimum
Income Tax Examination [Line Items]
Open Tax Year	2015
Germany | Foreign Country | Maximum
Income Tax Examination [Line Items]
Open Tax Year	2019
China | Foreign Country | Minimum
Income Tax Examination [Line Items]
Open Tax Year	2014
China | Foreign Country | Maximum
Income Tax Examination [Line Items]
Open Tax Year	2019
The Netherlands | Foreign Country | Minimum
Income Tax Examination [Line Items]
Open Tax Year	2014
The Netherlands | Foreign Country | Maximum
Income Tax Examination [Line Items]
Open Tax Year	2019

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DERIVATIVE FINANCIAL INSTRUMENTS (Details Textuals) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019	Dec. 31, 2019	Oct. 31, 2016	Jun. 30, 2016	Apr. 30, 2016
Derivative [Line Items]
Notional amount	$ 186.1	$ 225.1	$ 186.1	$ 174.6
Forward Contracts
Derivative [Line Items]
Notional amount	130.8	176.6	130.8	140.6
Forward Contracts Sell
Derivative [Line Items]
Notional amount	120.5	111.7	120.5	$ 99.2
Commodity Contract
Derivative [Line Items]
Cash Flow Hedges Derivative Instruments at Fair Value, Net		(1.9)
Cash Flow Hedge Gain (Loss) to be Reclassified within Twelve Months		$ (3.1)
Interest Rate Contract
Derivative [Line Items]
Interest Rate Cash Flow Hedge Gain (Loss) Reclassified to Earnings, Net	1.2		2.5
Fixed Interest Rate Swaps $1,100M (Tranche 1)
Derivative [Line Items]
Notional amount							$ 1,100.0
Fixed Interest Rate Swaps $900M (Tranche 2)
Derivative [Line Items]
Notional amount							900.0
Fixed Interest Rate Swaps $400M (Tranche 3)
Derivative [Line Items]
Notional amount							$ 400.0
Interest Rate Swaps Designated As Fair Value Hedges
Derivative [Line Items]
Notional amount	500.0		500.0		$ 250.0	$ 250.0
Amount of Gain (Loss)	$ (1.0)		$ (1.7)

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DERIVATIVE FINANCIAL INSTRUMENTS (Details 1) - USD ($) $ in Millions	Jun. 30, 2020	Dec. 31, 2019	Jun. 30, 2019
Derivative [Line Items]
Notional amount	$ 225.1	$ 174.6	$ 186.1
Forward Contracts
Derivative [Line Items]
Notional amount	176.6	140.6	130.8
Forward Contracts Sell
Derivative [Line Items]
Notional amount	111.7	99.2	120.5
Natural Gas Commodity Forward Contracts
Derivative [Line Items]
Notional amount	59.3	62.9	67.1
Ethane Commodity Forward Contracts
Derivative [Line Items]
Notional amount	48.2	51.5	53.4
Metals Commodity Forward Contracts
Derivative [Line Items]
Notional amount	$ 117.6	$ 60.2	$ 65.6

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DERIVATIVE FINANCIAL INSTRUMENTS (Details 2) - USD ($) $ in Millions	Jun. 30, 2020	Dec. 31, 2019	Jun. 30, 2019
Derivatives, Fair Value [Line Items]
Asset derivatives	$ (7.0)	$ (2.6)	$ (2.5)
Liability derivatives	(7.7)	(20.8)	(29.7)
Other Current Assets
Derivatives, Fair Value [Line Items]
Asset derivatives	(4.7)	(1.9)	(2.0)
Other Assets
Derivatives, Fair Value [Line Items]
Asset derivatives	(2.3)	(0.7)	(0.5)
Accrued Liabilities
Derivatives, Fair Value [Line Items]
Liability derivatives	(7.6)	(19.0)	(19.0)
Other Liabilities
Derivatives, Fair Value [Line Items]
Liability derivatives	(0.1)	(1.8)	(10.7)
Interest Rate Contract | Designated as Hedging Instrument | Other Current Assets
Derivatives, Fair Value [Line Items]
Asset derivatives	0.0	0.0	(1.7)
Commodity Contracts Losses | Designated as Hedging Instrument | Other Current Assets
Derivatives, Fair Value [Line Items]
Asset derivatives	2.8	0.5	0.3
Commodity Contracts Losses | Designated as Hedging Instrument | Other Assets
Derivatives, Fair Value [Line Items]
Asset derivatives	0.7	0.1	0.4
Commodity Contracts Losses | Designated as Hedging Instrument | Accrued Liabilities
Derivatives, Fair Value [Line Items]
Liability derivatives	(8.8)	(18.0)	(18.8)
Commodity Contracts Losses | Designated as Hedging Instrument | Other Liabilities
Derivatives, Fair Value [Line Items]
Liability derivatives	(0.2)	(1.8)	(1.7)
Commodity Contracts Gains | Designated as Hedging Instrument | Other Current Assets
Derivatives, Fair Value [Line Items]
Asset derivatives	(5.1)	(1.8)	(0.5)
Commodity Contracts Gains | Designated as Hedging Instrument | Other Assets
Derivatives, Fair Value [Line Items]
Asset derivatives	(3.0)	(0.8)	(0.9)
Commodity Contracts Gains | Designated as Hedging Instrument | Accrued Liabilities
Derivatives, Fair Value [Line Items]
Liability derivatives	2.4	0.2	0.5
Commodity Contracts Gains | Designated as Hedging Instrument | Other Liabilities
Derivatives, Fair Value [Line Items]
Liability derivatives	0.1	0.0	0.0
Foreign Exchange Contract | Not Designated as Hedging Instrument | Other Current Assets
Derivatives, Fair Value [Line Items]
Asset derivatives	(5.3)	(1.1)	(0.4)
Foreign Exchange Contract | Not Designated as Hedging Instrument | Accrued Liabilities
Derivatives, Fair Value [Line Items]
Liability derivatives	0.1	0.2	0.2
Foreign Exchange Contract Loss | Not Designated as Hedging Instrument | Other Current Assets
Derivatives, Fair Value [Line Items]
Asset derivatives	2.9	0.5	0.3
Foreign Exchange Contract Loss | Not Designated as Hedging Instrument | Accrued Liabilities
Derivatives, Fair Value [Line Items]
Liability derivatives	(1.3)	(1.4)	(0.9)
Interest Rate Contract Loss | Designated as Hedging Instrument | Other Liabilities
Derivatives, Fair Value [Line Items]
Liability derivatives	$ 0.0	$ 0.0	$ (9.0)

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DERIVATIVE FINANCIAL INSTRUMENTS (Details 3) - USD ($) $ in Millions	3 Months Ended				6 Months Ended
	Jun. 30, 2020	Mar. 31, 2020	Jun. 30, 2019	Mar. 31, 2019	Jun. 30, 2020	Jun. 30, 2019
Derivative Instruments, Gain (Loss) [Line Items]
Recognized in other comprehensive loss:	$ 29.9	$ (35.1)	$ (22.2)	$ (6.6)
Cash Flow Hedging
Derivative Instruments, Gain (Loss) [Line Items]
Recognized in other comprehensive loss:	29.9		(22.2)		$ (5.2)	$ (28.8)
Reclassified from accumulated other comprehensive loss into income:	(9.3)		(6.3)		(20.9)	(8.5)
Commodity Contract | Cash Flow Hedging
Derivative Instruments, Gain (Loss) [Line Items]
Recognized in other comprehensive loss:	29.9		(21.5)		(5.2)	(27.7)
Commodity Contract | Cost of goods sold | Cash Flow Hedging
Derivative Instruments, Gain (Loss) [Line Items]
Reclassified from accumulated other comprehensive loss into income:	(9.3)		(7.5)		(20.9)	(11.0)
Interest Rate Swap | Cash Flow Hedging
Derivative Instruments, Gain (Loss) [Line Items]
Recognized in other comprehensive loss:	0.0		(0.7)		0.0	(1.1)
Interest Rate Swap | Interest expense | Cash Flow Hedging
Derivative Instruments, Gain (Loss) [Line Items]
Reclassified from accumulated other comprehensive loss into income:	0.0		1.2		0.0	2.5
Interest Rate Swap | Interest expense | Fair Value Hedging
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain (Loss)	0.0		(1.0)		0.0	(1.7)
Foreign Exchange Contract | Selling and administration | Not Designated as Hedging Instrument
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain (Loss)	$ 0.6		$ (0.6)		$ 7.1	$ (3.0)

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FAIR VALUE MEASUREMENTS (Details Textuals) - USD ($) $ in Millions	Jun. 30, 2020	Dec. 31, 2019	Jun. 30, 2019
Nonrecurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure	$ 0.0	$ 0.0	$ 0.0

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FAIR VALUE MEASUREMENTS (Details 1) - USD ($) $ in Millions	Jun. 30, 2020	Dec. 31, 2019	Jun. 30, 2019
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Asset	$ 7.0	$ 2.6	$ 2.5
Derivative Liability	7.7	20.8	29.7
Fair Value, Inputs, Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Asset	0.0	0.0	0.0
Derivative Liability	0.0	0.0	0.0
Fair Value, Inputs, Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Asset	7.0	2.6	2.5
Derivative Liability	7.7	20.8	29.7
Fair Value, Inputs, Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Asset	0.0	0.0	0.0
Derivative Liability	0.0	0.0	0.0
Interest Rate Swap
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Asset			1.7
Derivative Liability			9.0
Interest Rate Swap | Fair Value, Inputs, Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Asset			0.0
Derivative Liability			0.0
Interest Rate Swap | Fair Value, Inputs, Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Asset			1.7
Derivative Liability			9.0
Interest Rate Swap | Fair Value, Inputs, Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Asset			0.0
Derivative Liability			0.0
Commodity Contract
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Asset	4.6	2.0	0.7
Derivative Liability	6.5	19.6	20.0
Commodity Contract | Fair Value, Inputs, Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Asset	0.0	0.0	0.0
Derivative Liability	0.0	0.0	0.0
Commodity Contract | Fair Value, Inputs, Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Asset	4.6	2.0	0.7
Derivative Liability	6.5	19.6	20.0
Commodity Contract | Fair Value, Inputs, Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Asset	0.0	0.0	0.0
Derivative Liability	0.0	0.0	0.0
Foreign Exchange Contract
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Asset	2.4	0.6	0.1
Derivative Liability	1.2	1.2	0.7
Foreign Exchange Contract | Fair Value, Inputs, Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Asset	0.0	0.0	0.0
Derivative Liability	0.0	0.0	0.0
Foreign Exchange Contract | Fair Value, Inputs, Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Asset	2.4	0.6	0.1
Derivative Liability	1.2	1.2	0.7
Foreign Exchange Contract | Fair Value, Inputs, Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Asset	0.0	0.0	0.0
Derivative Liability	$ 0.0	$ 0.0	$ 0.0

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FAIR VALUE MEASUREMENTS (Details 2) - USD ($) $ in Millions	Jun. 30, 2020	Dec. 31, 2019	Jun. 30, 2019
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Long-term Debt, Fair Value	$ 4,054.7	$ 3,570.5	$ 3,415.6
Notes Payable	4,075.7	3,340.8	3,233.7
Fair Value, Inputs, Level 1
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Long-term Debt, Fair Value	0.0	0.0	0.0
Fair Value, Inputs, Level 2
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Long-term Debt, Fair Value	3,901.7	3,417.5	3,262.6
Fair Value, Inputs, Level 3
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Long-term Debt, Fair Value	$ 153.0	$ 153.0	$ 153.0

XML

SUPPLEMENTAL GUARANTOR FINANCIAL INFORMATION (Balance Sheet) (Details) - USD ($) $ in Millions	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018
Supplemental Guarantor Financial Information Balance Sheets [Line Items]
Cash and cash equivalents	$ 237.9		$ 220.9	$ 126.9		$ 178.8
Receivables, net	700.2		760.4	848.2
Intercompany receivables	0.0		0.0	0.0
Income taxes receivable	17.6		13.9	23.4
Inventories, net	619.1		695.7	698.9
Other current assets	42.0		23.1	28.8
Total current assets	1,616.8		1,714.0	1,726.2
Property, plant and equipment, net	3,234.9		3,323.8	3,410.5
Operating lease assets, net	371.8		377.8	295.8
Investment in subsidiaries	0.0		0.0	0.0
Deferred income taxes	38.3		35.3	28.1
Other assets	1,179.7		1,169.1	1,174.5
Long-term receivables—affiliates	0.0		0.0	0.0
Intangible assets, net	416.9		448.1	480.6
Goodwill	2,119.7		2,119.7	2,119.6		2,119.6
Total assets	8,978.1		9,187.8	9,235.3
Current installments of long-term debt	1.8		2.1	1.1
Accounts payable	520.8		651.9	669.2
Intercompany payables	0.0		0.0	0.0
Income taxes payable	7.7		19.8	9.5
Current operating lease liabilities	77.3		79.3	71.4
Accrued liabilities	318.7		329.1	298.9
Total current liabilities	926.3		1,082.2	1,050.1
Long-term debt	4,073.9		3,338.7	3,232.6
Operating lease liabilities	299.2		303.4	229.3
Accrued pension liability	768.0		797.7	653.6
Deferred income taxes	414.5		454.5	506.4
Long-term payables—affiliates	0.0		0.0	0.0
Other liabilities	307.3		793.8	792.5
Total liabilities	6,789.2		6,770.3	6,464.5
Commitments and contingencies
Common stock	157.9		157.7	164.3
Additional paid-in capital	2,127.0		2,122.1	2,229.2
Accumulated other comprehensive loss	(773.9)		(803.4)	(660.4)		(651.0)
Retained earnings	677.9		941.1	1,037.7
Total shareholders’ equity	2,188.9	$ 2,289.1	2,417.5	2,770.8	$ 2,837.6	2,832.2
Total liabilities and shareholders’ equity	8,978.1		9,187.8	9,235.3
Parent Guarantor
Supplemental Guarantor Financial Information Balance Sheets [Line Items]
Cash and cash equivalents	56.9		11.6	3.7		92.0
Receivables, net	51.1		78.3	105.2
Intercompany receivables	0.0		0.0	0.0
Income taxes receivable	10.9		1.6	16.2
Inventories, net	131.4		157.1	179.8
Other current assets	259.8		231.4	225.9
Total current assets	510.1		480.0	530.8
Property, plant and equipment, net	705.5		699.0	687.3
Operating lease assets, net	44.2		47.4	48.5
Investment in subsidiaries	6,942.1		7,048.2	7,028.6
Deferred income taxes	58.2		1.7	3.9
Other assets	23.6		20.9	14.3
Long-term receivables—affiliates	73.4		73.4	0.0
Intangible assets, net	0.2		0.3	0.3
Goodwill	0.0		0.0	0.0
Total assets	8,357.3		8,370.9	8,313.7
Current installments of long-term debt	1.8		2.1	1.1
Accounts payable	0.0		0.0	15.9
Intercompany payables	2,587.6		2,815.5	2,804.3
Income taxes payable	0.0		11.5	0.0
Current operating lease liabilities	8.4		8.2	8.2
Accrued liabilities	188.8		183.7	176.9
Total current liabilities	2,786.6		3,021.0	3,006.4
Long-term debt	2,623.9		2,130.0	1,385.7
Operating lease liabilities	37.0		40.4	41.3
Accrued pension liability	463.2		496.9	414.6
Deferred income taxes	0.0		0.0	0.0
Long-term payables—affiliates	0.0		0.0	419.6
Other liabilities	257.7		265.1	275.3
Total liabilities	6,168.4		5,953.4	5,542.9
Commitments and contingencies
Common stock	157.9		157.7	164.3
Additional paid-in capital	2,127.0		2,122.1	2,229.2
Accumulated other comprehensive loss	(773.9)		(803.4)	(660.4)
Retained earnings	677.9		941.1	1,037.7
Total shareholders’ equity	2,188.9		2,417.5	2,770.8
Total liabilities and shareholders’ equity	8,357.3		8,370.9	8,313.7
Issuer
Supplemental Guarantor Financial Information Balance Sheets [Line Items]
Cash and cash equivalents	0.0		0.0	0.0		0.0
Receivables, net	0.0		0.0	0.0
Intercompany receivables	0.0		0.0	0.0
Income taxes receivable	0.0		0.0	0.0
Inventories, net	0.0		0.0	0.0
Other current assets	0.0		0.0	0.0
Total current assets	0.0		0.0	0.0
Property, plant and equipment, net	0.0		0.0	0.0
Operating lease assets, net	0.0		0.0	0.0
Investment in subsidiaries	4,262.9		4,353.5	4,330.9
Deferred income taxes	0.0		0.0	0.0
Other assets	0.0		0.0	0.0
Long-term receivables—affiliates	560.2		605.8	1,141.7
Intangible assets, net	0.0		0.0	0.0
Goodwill	966.3		966.3	966.3
Total assets	5,789.4		5,925.6	6,438.9
Current installments of long-term debt	0.0		0.0	0.0
Accounts payable	0.0		0.0	0.0
Intercompany payables	0.0		0.0	0.0
Income taxes payable	0.0		0.0	0.0
Current operating lease liabilities	0.0		0.0	0.0
Accrued liabilities	0.0		0.0	0.0
Total current liabilities	0.0		0.0	0.0
Long-term debt	1,209.7		1,208.7	1,696.9
Operating lease liabilities	0.0		0.0	0.0
Accrued pension liability	0.0		0.0	0.0
Deferred income taxes	6.6		6.5	4.9
Long-term payables—affiliates	0.0		0.0	0.0
Other liabilities	5.6		5.6	5.5
Total liabilities	1,221.9		1,220.8	1,707.3
Commitments and contingencies
Common stock	0.0		0.0	0.0
Additional paid-in capital	4,125.7		4,125.7	4,125.7
Accumulated other comprehensive loss	0.0		0.0	0.0
Retained earnings	441.8		579.1	605.9
Total shareholders’ equity	4,567.5		4,704.8	4,731.6
Total liabilities and shareholders’ equity	5,789.4		5,925.6	6,438.9
Subsidiary Non-Guarantor
Supplemental Guarantor Financial Information Balance Sheets [Line Items]
Cash and cash equivalents	181.0		209.3	123.2		86.8
Receivables, net	649.1		686.8	743.0
Intercompany receivables	2,587.6		2,815.5	2,804.3
Income taxes receivable	8.3		12.3	7.2
Inventories, net	487.7		538.6	519.1
Other current assets	1.0		0.2	0.8
Total current assets	3,914.7		4,262.7	4,197.6
Property, plant and equipment, net	2,529.4		2,624.8	2,723.2
Operating lease assets, net	327.6		330.4	247.3
Investment in subsidiaries	0.0		0.0	0.0
Deferred income taxes	38.2		34.7	29.0
Other assets	1,156.1		1,148.2	1,160.2
Long-term receivables—affiliates	0.0		0.0	0.0
Intangible assets, net	416.7		447.8	480.3
Goodwill	1,153.4		1,153.4	1,153.3
Total assets	9,536.1		10,002.0	9,990.9
Current installments of long-term debt	0.0		0.0	0.0
Accounts payable	526.3		660.6	658.6
Intercompany payables	0.0		0.0	0.0
Income taxes payable	9.3		8.3	9.5
Current operating lease liabilities	68.9		71.1	63.2
Accrued liabilities	345.4		350.8	317.1
Total current liabilities	949.9		1,090.8	1,048.4
Long-term debt	240.3		0.0	150.0
Operating lease liabilities	262.2		263.0	188.0
Accrued pension liability	304.8		300.8	239.0
Deferred income taxes	466.0		449.2	506.3
Long-term payables—affiliates	633.6		679.2	722.1
Other liabilities	44.0		523.1	511.7
Total liabilities	2,900.8		3,306.1	3,365.5
Commitments and contingencies
Common stock	14.6		14.6	14.6
Additional paid-in capital	4,808.2		4,808.2	4,808.2
Accumulated other comprehensive loss	(7.5)		(6.5)	(10.0)
Retained earnings	1,820.0		1,879.6	1,812.6
Total shareholders’ equity	6,635.3		6,695.9	6,625.4
Total liabilities and shareholders’ equity	9,536.1		10,002.0	9,990.9
Eliminations
Supplemental Guarantor Financial Information Balance Sheets [Line Items]
Cash and cash equivalents	0.0		0.0	0.0		$ 0.0
Receivables, net	0.0		(4.7)	0.0
Intercompany receivables	(2,587.6)		(2,815.5)	(2,804.3)
Income taxes receivable	(1.6)		0.0	0.0
Inventories, net	0.0		0.0	0.0
Other current assets	(218.8)		(208.5)	(197.9)
Total current assets	(2,808.0)		(3,028.7)	(3,002.2)
Property, plant and equipment, net	0.0		0.0	0.0
Operating lease assets, net	0.0		0.0	0.0
Investment in subsidiaries	(11,205.0)		(11,401.7)	(11,359.5)
Deferred income taxes	(58.1)		(1.1)	(4.8)
Other assets	0.0		0.0	0.0
Long-term receivables—affiliates	(633.6)		(679.2)	(1,141.7)
Intangible assets, net	0.0		0.0	0.0
Goodwill	0.0		0.0	0.0
Total assets	(14,704.7)		(15,110.7)	(15,508.2)
Current installments of long-term debt	0.0		0.0	0.0
Accounts payable	(5.5)		(8.7)	(5.3)
Intercompany payables	(2,587.6)		(2,815.5)	(2,804.3)
Income taxes payable	(1.6)		0.0	0.0
Current operating lease liabilities	0.0		0.0	0.0
Accrued liabilities	(215.5)		(205.4)	(195.1)
Total current liabilities	(2,810.2)		(3,029.6)	(3,004.7)
Long-term debt	0.0		0.0	0.0
Operating lease liabilities	0.0		0.0	0.0
Accrued pension liability	0.0		0.0	0.0
Deferred income taxes	(58.1)		(1.2)	(4.8)
Long-term payables—affiliates	(633.6)		(679.2)	(1,141.7)
Other liabilities	0.0		0.0	0.0
Total liabilities	(3,501.9)		(3,710.0)	(4,151.2)
Commitments and contingencies
Common stock	(14.6)		(14.6)	(14.6)
Additional paid-in capital	(8,933.9)		(8,933.9)	(8,933.9)
Accumulated other comprehensive loss	7.5		6.5	10.0
Retained earnings	(2,261.8)		(2,458.7)	(2,418.5)
Total shareholders’ equity	(11,202.8)		(11,400.7)	(11,357.0)
Total liabilities and shareholders’ equity	$ (14,704.7)		$ (15,110.7)	$ (15,508.2)

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SUPPLEMENTAL GUARANTOR FINANCIAL INFORMATION (Statements of Operations) (Details) - USD ($) $ in Millions	3 Months Ended				6 Months Ended		51 Months Ended
	Jun. 30, 2020	Mar. 31, 2020	Jun. 30, 2019	Mar. 31, 2019	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020
Supplemental Guarantor Financial Information Statement of Operations [Line Items]
Sales	$ 1,241.2		$ 1,592.9		$ 2,666.3	$ 3,146.3
Operating expenses:
Cost of goods sold	1,235.7		1,463.7		2,609.9	2,811.0
Selling and administration	99.7		97.0		196.4	204.0
Restructuring charges	1.7	$ 1.7	3.8	$ 4.0	3.4	7.8	$ 243.7
Other operating income (expense)	0.1		0.1		0.1	0.2
Operating (loss) income	95.8		(28.5)		143.3	(123.7)
Equity (loss) income in subsidiaries	0.0		0.0		0.0	0.0
Interest expense	69.4		57.9		132.5	115.3
Interest income	0.2		0.3		0.3	0.5
Non-operating pension income (expense)	4.9		4.2		9.5	8.1
Other income	0.0		0.0		0.0	11.2
Income (loss) before taxes	(160.1)		(24.9)		(266.0)	28.2
Income tax (benefit) provision	(40.0)		(4.9)		(65.9)	6.5
Net (loss) income	(120.1)	$ (80.0)	(20.0)	$ 41.7	(200.1)	21.7
Parent Guarantor
Supplemental Guarantor Financial Information Statement of Operations [Line Items]
Sales	346.9		324.0		700.2	656.8
Operating expenses:
Cost of goods sold	319.5		309.8		653.1	613.9
Selling and administration	69.0		47.8		108.9	99.6
Restructuring charges	0.0		0.0		0.0	1.4
Other operating income (expense)	0.1		(2.3)		0.1	(4.4)
Operating (loss) income	41.5		35.9		61.7	62.5
Equity (loss) income in subsidiaries	(65.6)		10.9		(114.1)	73.5
Interest expense	39.3		18.3		71.7	35.7
Interest income	1.3		2.0		3.4	2.6
Non-operating pension income (expense)	6.6		5.7		13.1	11.1
Other income						11.2
Income (loss) before taxes	(138.5)		(35.6)		(231.0)	0.2
Income tax (benefit) provision	(18.4)		(15.6)		(30.9)	(21.5)
Net (loss) income	(120.1)		(20.0)		(200.1)	21.7
Issuer
Supplemental Guarantor Financial Information Statement of Operations [Line Items]
Sales	0.0		0.0		0.0	0.0
Operating expenses:
Cost of goods sold	0.0		0.0		0.0	0.0
Selling and administration	0.0		0.0		0.0	0.0
Restructuring charges	0.0		0.0		0.0	0.0
Other operating income (expense)	0.0		0.0		0.0	0.0
Operating (loss) income	0.0		0.0		0.0	0.0
Equity (loss) income in subsidiaries	(59.5)		(8.6)		(90.6)	44.0
Interest expense	30.6		35.7		61.2	71.8
Interest income	0.0		0.0		0.0	0.0
Non-operating pension income (expense)	0.0		0.0		0.0	0.0
Other income						0.0
Income (loss) before taxes	(90.1)		(44.3)		(151.8)	(27.8)
Income tax (benefit) provision	(7.2)		(8.7)		(14.5)	(17.4)
Net (loss) income	(82.9)		(35.6)		(137.3)	(10.4)
Subsidiary Non-Guarantor
Supplemental Guarantor Financial Information Statement of Operations [Line Items]
Sales	1,023.8		1,397.3		2,225.6	2,725.0
Operating expenses:
Cost of goods sold	1,045.7		1,282.3		2,216.3	2,432.6
Selling and administration	30.7		49.2		87.5	104.4
Restructuring charges	1.7		3.8		3.4	6.4
Other operating income (expense)	0.0		2.4		0.0	4.6
Operating (loss) income	54.3		(64.4)		81.6	(186.2)
Equity (loss) income in subsidiaries	0.0		0.0		0.0	0.0
Interest expense	0.6		6.5		3.7	11.7
Interest income	0.0		0.9		1.0	1.8
Non-operating pension income (expense)	(1.7)		(1.5)		(3.6)	(3.0)
Other income						0.0
Income (loss) before taxes	(56.6)		57.3		(87.9)	173.3
Income tax (benefit) provision	(14.4)		19.4		(20.5)	45.4
Net (loss) income	(42.2)		37.9		(67.4)	127.9
Eliminations
Supplemental Guarantor Financial Information Statement of Operations [Line Items]
Sales	(129.5)		(128.4)		(259.5)	(235.5)
Operating expenses:
Cost of goods sold	(129.5)		(128.4)		(259.5)	(235.5)
Selling and administration	0.0		0.0		0.0	0.0
Restructuring charges	0.0		0.0		0.0	0.0
Other operating income (expense)	0.0		0.0		0.0	0.0
Operating (loss) income	0.0		0.0		0.0	0.0
Equity (loss) income in subsidiaries	125.1		(2.3)		204.7	(117.5)
Interest expense	(1.1)		(2.6)		(4.1)	(3.9)
Interest income	(1.1)		(2.6)		(4.1)	(3.9)
Non-operating pension income (expense)	0.0		0.0		0.0	0.0
Other income						0.0
Income (loss) before taxes	125.1		(2.3)		204.7	(117.5)
Income tax (benefit) provision	0.0		0.0		0.0	0.0
Net (loss) income	$ 125.1		$ (2.3)		$ 204.7	$ (117.5)

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SUPPLEMENTAL GUARANTOR FINANCIAL INFORMATION (Statements of Comprehensive Income (Loss)) (Details) - USD ($) $ in Millions	3 Months Ended				6 Months Ended
	Jun. 30, 2020	Mar. 31, 2020	Jun. 30, 2019	Mar. 31, 2019	Jun. 30, 2020	Jun. 30, 2019
Supplemental Guarantor Financial Information Statements Of Comprehensive Income (Loss) [Line Items]
Net (loss) income	$ (120.1)	$ (80.0)	$ (20.0)	$ 41.7	$ (200.1)	$ 21.7
Other comprehensive (loss) income net of tax:
Foreign currency translation adjustments, net	8.2		3.3		(0.8)	(5.0)
Unrealized gains (losses) on derivative contracts, net	30.0		(12.1)		12.1	(15.4)
Amortization of prior service costs and actuarial losses, net	9.0		5.3		18.2	11.0
Total other comprehensive income (loss), net of tax	47.2	$ (17.7)	(3.5)	$ (5.9)	29.5	(9.4)
Comprehensive (loss) income	(72.9)		(23.5)		(170.6)	12.3
Parent Guarantor
Supplemental Guarantor Financial Information Statements Of Comprehensive Income (Loss) [Line Items]
Net (loss) income	(120.1)		(20.0)		(200.1)	21.7
Other comprehensive (loss) income net of tax:
Foreign currency translation adjustments, net	0.0		0.0		0.0	0.0
Unrealized gains (losses) on derivative contracts, net	30.0		(12.1)		12.1	(15.4)
Amortization of prior service costs and actuarial losses, net	7.6		4.8		15.5	9.9
Total other comprehensive income (loss), net of tax	37.6		(7.3)		27.6	(5.5)
Comprehensive (loss) income	(82.5)		(27.3)		(172.5)	16.2
Issuer
Supplemental Guarantor Financial Information Statements Of Comprehensive Income (Loss) [Line Items]
Net (loss) income	(82.9)		(35.6)		(137.3)	(10.4)
Other comprehensive (loss) income net of tax:
Foreign currency translation adjustments, net	0.0		0.0		0.0	0.0
Unrealized gains (losses) on derivative contracts, net	0.0		0.0		0.0	0.0
Amortization of prior service costs and actuarial losses, net	0.0		0.0		0.0	0.0
Total other comprehensive income (loss), net of tax	0.0		0.0		0.0	0.0
Comprehensive (loss) income	(82.9)		(35.6)		(137.3)	(10.4)
Subsidiary Non-Guarantor
Supplemental Guarantor Financial Information Statements Of Comprehensive Income (Loss) [Line Items]
Net (loss) income	(42.2)		37.9		(67.4)	127.9
Other comprehensive (loss) income net of tax:
Foreign currency translation adjustments, net	8.2		3.3		(0.8)	(5.0)
Unrealized gains (losses) on derivative contracts, net	0.0		0.0		0.0	0.0
Amortization of prior service costs and actuarial losses, net	1.4		0.5		2.7	1.1
Total other comprehensive income (loss), net of tax	9.6		3.8		1.9	(3.9)
Comprehensive (loss) income	(32.6)		41.7		(65.5)	124.0
Eliminations
Supplemental Guarantor Financial Information Statements Of Comprehensive Income (Loss) [Line Items]
Net (loss) income	125.1		(2.3)		204.7	(117.5)
Other comprehensive (loss) income net of tax:
Foreign currency translation adjustments, net	0.0		0.0		0.0	0.0
Unrealized gains (losses) on derivative contracts, net	0.0		0.0		0.0	0.0
Amortization of prior service costs and actuarial losses, net	0.0		0.0		0.0	0.0
Total other comprehensive income (loss), net of tax	0.0		0.0		0.0	0.0
Comprehensive (loss) income	$ 125.1		$ (2.3)		$ 204.7	$ (117.5)

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SUPPLEMENTAL GUARANTOR FINANCIAL INFORMATION (Cash Flows) (Details) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019
Supplemental Guarantor Financial Information Statements Of Cash Flows [Line Items]
Net Cash Provided by (Used in) Operating Activities	$ 55.4	$ 236.1
Capital expenditures	(166.5)	(191.3)
Payments under ethylene long-term supply contracts	(461.0)	0.0
Payments under other long-term supply contracts	(75.8)	0.0
Proceeds from disposition of non-consolidated affiliate		20.0
Net investing activities	(703.3)	(171.3)
Long-term debt:
Borrowings	1,163.2	25.0
Repayments	(425.8)	(50.6)
Common stock repurchased and retired	0.0	(26.7)
Stock options exercised	0.5	1.5
Dividends paid	(63.1)	(65.7)
Debt issuance costs	(9.6)	0.0
Intercompany financing activities	0.0	0.0
Net financing activities	665.2	(116.5)
Effect of exchange rate changes on cash and cash equivalents	(0.3)	(0.2)
Net increase (decrease) in cash and cash equivalents	17.0	(51.9)
Cash and cash equivalents, beginning of year	220.9	178.8
Cash and cash equivalents, end of period	237.9	126.9
Parent Guarantor
Supplemental Guarantor Financial Information Statements Of Cash Flows [Line Items]
Net Cash Provided by (Used in) Operating Activities	219.1	120.1
Capital expenditures	(61.5)	(86.9)
Payments under ethylene long-term supply contracts	0.0
Payments under other long-term supply contracts	0.0
Proceeds from disposition of non-consolidated affiliate		20.0
Net investing activities	(61.5)	(66.9)
Long-term debt:
Borrowings	672.5	0.0
Repayments	(175.8)	(0.6)
Common stock repurchased and retired		(26.7)
Stock options exercised	0.5	1.5
Dividends paid	(63.1)	(65.7)
Debt issuance costs	(9.6)
Intercompany financing activities	(536.8)	(50.0)
Net financing activities	(112.3)	(141.5)
Effect of exchange rate changes on cash and cash equivalents	0.0	0.0
Net increase (decrease) in cash and cash equivalents	45.3	(88.3)
Cash and cash equivalents, beginning of year	11.6	92.0
Cash and cash equivalents, end of period	56.9	3.7
Issuer
Supplemental Guarantor Financial Information Statements Of Cash Flows [Line Items]
Net Cash Provided by (Used in) Operating Activities	0.0	0.0
Capital expenditures	0.0	0.0
Payments under ethylene long-term supply contracts	0.0
Payments under other long-term supply contracts	0.0
Proceeds from disposition of non-consolidated affiliate		0.0
Net investing activities	0.0	0.0
Long-term debt:
Borrowings	0.0	0.0
Repayments	0.0	(50.0)
Common stock repurchased and retired		0.0
Stock options exercised	0.0	0.0
Dividends paid	0.0	0.0
Debt issuance costs	0.0
Intercompany financing activities	0.0	50.0
Net financing activities	0.0	0.0
Effect of exchange rate changes on cash and cash equivalents	0.0	0.0
Net increase (decrease) in cash and cash equivalents	0.0	0.0
Cash and cash equivalents, beginning of year	0.0	0.0
Cash and cash equivalents, end of period	0.0	0.0
Subsidiary Non-Guarantor
Supplemental Guarantor Financial Information Statements Of Cash Flows [Line Items]
Net Cash Provided by (Used in) Operating Activities	(163.7)	116.0
Capital expenditures	(105.0)	(104.4)
Payments under ethylene long-term supply contracts	(461.0)
Payments under other long-term supply contracts	(75.8)
Proceeds from disposition of non-consolidated affiliate		0.0
Net investing activities	(641.8)	(104.4)
Long-term debt:
Borrowings	490.7	25.0
Repayments	(250.0)	0.0
Common stock repurchased and retired		0.0
Stock options exercised	0.0	0.0
Dividends paid	0.0	0.0
Debt issuance costs	0.0
Intercompany financing activities	536.8	0.0
Net financing activities	777.5	25.0
Effect of exchange rate changes on cash and cash equivalents	(0.3)	(0.2)
Net increase (decrease) in cash and cash equivalents	(28.3)	36.4
Cash and cash equivalents, beginning of year	209.3	86.8
Cash and cash equivalents, end of period	181.0	123.2
Eliminations
Supplemental Guarantor Financial Information Statements Of Cash Flows [Line Items]
Net Cash Provided by (Used in) Operating Activities	0.0	0.0
Capital expenditures	0.0	0.0
Payments under ethylene long-term supply contracts	0.0
Payments under other long-term supply contracts	0.0
Proceeds from disposition of non-consolidated affiliate		0.0
Net investing activities	0.0	0.0
Long-term debt:
Borrowings	0.0	0.0
Repayments	0.0	0.0
Common stock repurchased and retired		0.0
Stock options exercised	0.0	0.0
Dividends paid	0.0	0.0
Debt issuance costs	0.0
Intercompany financing activities	0.0	0.0
Net financing activities	0.0	0.0
Effect of exchange rate changes on cash and cash equivalents	0.0	0.0
Net increase (decrease) in cash and cash equivalents	0.0	0.0
Cash and cash equivalents, beginning of year	0.0	0.0
Cash and cash equivalents, end of period	$ 0.0	$ 0.0

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SUPPLEMENTAL GUARANTOR FINANCIAL INFORMATION (Detail Textuals) $ in Millions	Oct. 05, 2015 USD ($)
Blue Cube 2023 Notes
Business Acquisition [Line Items]
Debt Instrument, Face Amount	$ 720.0
Debt Instrument, Interest Rate, Stated Percentage	9.75%
Blue Cube 2025 Notes
Business Acquisition [Line Items]
Debt Instrument, Face Amount	$ 500.0
Debt Instrument, Interest Rate, Stated Percentage	10.00%