10-Q

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 10-Q

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

For the quarterly period endedJUNE 30, 2018

or

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

For the transition period from __________to___________

Commission File Number: 1-1463

UNION CARBIDE CORPORATION

(Exact name of registrant as specified in its charter)

New York (State or other jurisdiction of
     incorporation or organization) 13-1421730 (I.R.S. Employer Identification No.)

7501 STATE HIGHWAY 185 NORTH, SEADRIFT, TEXAS  77983

(Address of principal executive offices) (Zip Code)

 Registrant's telephone number, including area code:  361-553-2997

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.

þ Yes    o No

Indicate by check mark whether the registrant has submitted electronically and posted on its corporate Web site, if any, every Interactive Data File required to be submitted and posted 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 and post such files).  

þ Yes    o No

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a 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	o	Accelerated filer	o
Non-accelerated filer	þ	Smaller reporting company	o
		Emerging growth company	o

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. o

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act).

o Yes    þ No

At June 30, 2018, 935.51 shares of common stock were outstanding, all of which were held by the registrant’s parent, The Dow Chemical Company.

The registrant meets the conditions set forth in General Instruction H(1)(a) and (b) for Form 10-Q and is therefore filing this form with a reduced disclosure format.

Union Carbide Corporation

QUARTERLY REPORT ON FORM 10-Q

For the quarterly period ended June 30, 2018

TABLE OF CONTENTS

		PAGE
PART I - FINANCIAL INFORMATION
Item 1.	Financial Statements.	4
	Consolidated Statements of Income.	4
	Consolidated Statements of Comprehensive Income.	5
	Consolidated Balance Sheets.	6
	Consolidated Statements of Cash Flows.	7
	Consolidated Statements of Equity.	8
	Notes to the Consolidated Financial Statements.	9
Item 2.	Management's Discussion and Analysis of Financial Condition and Results of Operations.	20
	Results of Operations.	20
	Other Matters.	21
Item 3.	Quantitative and Qualitative Disclosures About Market Risk.	23
Item 4.	Controls and Procedures.	23
PART II - OTHER INFORMATION
Item 1.	Legal Proceedings.	24
Item 1A.	Risk Factors.	24
Item 4.	Mine Safety Disclosures.	24
Item 6.	Exhibits.	24
SIGNATURES		25

2

Union Carbide Corporation and Subsidiaries

Throughout this Quarterly Report on Form 10-Q, except as otherwise indicated by the context, the terms "Corporation" or "UCC" as used herein mean Union Carbide Corporation and its subsidiaries.

FORWARD-LOOKING STATEMENTS

Certain statements in this report, other than purely historical information, including estimates, projections, statements relating to business plans, objectives, and expected operating results, and the assumptions upon which those statements are based, are "forward-looking statements" within the meaning of the Private Securities Litigation Reform Act of 1995, Section 27A of the Securities Act of 1933 and Section 21E of the Securities Exchange Act of 1934. Forward-looking statements may appear throughout this report, including without limitation, the section "Management's Discussion and Analysis." These forward-looking statements are generally identified by the words or phrases "anticipate," "believe," "estimate," "expect," "future," "intend," "may," "opportunity," "outlook," "plan," "project," "see," "seek," "should," "strategy," "will," "would," "will be," "will continue," "will likely result" and similar expressions. Forward-looking statements are based on current expectations and assumptions that are subject to risks and uncertainties which may cause actual results to differ materially from the forward-looking statements.

A detailed discussion of principal risks and uncertainties which may cause actual results and events to differ materially from such forward-looking statements is included in the section titled "Risk Factors" (see Part I, Item 1A of the Corporation's Annual Report on Form 10-K for the year ended December 31, 2017). UCC undertakes no obligation to update or revise publicly any forward-looking statements whether because of new information, future events, or otherwise, except as required by securities and other applicable laws.

3

PART I - FINANCIAL INFORMATION

ITEM 1. FINANCIAL STATEMENTS

Union Carbide Corporation and Subsidiaries

Consolidated Statements of Income

	Three Months Ended					Six Months Ended
In millions (Unaudited)	Jun 30, 2018			Jun 30, 2017		Jun 30, 2018			Jun 30, 2017
Net trade sales	$	34		$	25	$	66		$	82
Net sales to related companies	1,327			1,272		2,613			2,538
Total net sales	1,361			1,297		2,679			2,620
Cost of sales	948			1,025		2,040			2,067
Research and development expenses	5			8		10			10
Selling, general and administrative expenses	2			1		4			3
Restructuring and asset related charges - net	1			2		2			2
Integration and separation costs	1			—		1			—
Sundry income (expense) - net	(8		)	23		(16		)	16
Interest expense and amortization of debt discount	6			7		13			14
Income before income taxes	390			277		593			540
Provision for income taxes	84			95		122			185
Net income attributable to Union Carbide Corporation	$	306		$	182	$	471		$	355
Depreciation	$	43		$	42	$	88		$	87
Capital expenditures	$	57		$	48	$	101		$	98

See Notes to the Consolidated Financial Statements.

4

Union Carbide Corporation and Subsidiaries

Consolidated Statements of Comprehensive Income

	Three Months Ended				Six Months Ended
In millions (Unaudited)	Jun 30, 2018		Jun 30, 2017		Jun 30, 2018		Jun 30, 2017
Net income attributable to Union Carbide Corporation	$	306	$	182	$	471	$	355
Other comprehensive income, net of tax
Cumulative translation adjustments	1		2		1		3
Pension and other postretirement benefit plans	17		12		33		24
Total other comprehensive income	18		14		34		27
Comprehensive income attributable to Union Carbide Corporation	$	324	$	196	$	505	$	382

See Notes to the Consolidated Financial Statements.

5

Union Carbide Corporation and Subsidiaries

Consolidated Balance Sheets

In millions, except share amounts (Unaudited)	Jun 30, 2018			Dec 31, 2017
Assets
Current Assets
Cash and cash equivalents	$	13		$	13
Accounts receivable:
Trade (net of allowance for doubtful receivables 2018: $-; 2017: $-)	31			21
Related companies	990			972
Other	49			50
Income taxes receivable	293			281
Notes receivable from related companies	1,091			1,238
Inventories	282			278
Other current assets	27			35
Total current assets	2,776			2,888
Investments
Investments in related companies	639			639
Other investments	25			25
Noncurrent receivables	64			62
Noncurrent receivables from related companies	55			54
Total investments	783			780
Property
Property	7,402			7,309
Less accumulated depreciation	6,012			5,930
Net property	1,390			1,379
Other Assets
Intangible assets (net of accumulated amortization 2018: $85; 2017: $82)	28			25
Deferred income tax assets	485			511
Deferred charges and other assets	35			36
Total other assets	548			572
Total Assets	$	5,497		$	5,619
Liabilities and Equity
Current Liabilities
Notes payable to related companies	$	27		$	28
Notes payable - other	2			—
Long-term debt due within one year	1			1
Accounts payable:
Trade	249			270
Related companies	464			684
Other	22			22
Income taxes payable	22			24
Asbestos-related liabilities - current	131			132
Accrued and other current liabilities	175			174
Total current liabilities	1,093			1,335
Long-Term Debt	474			474
Other Noncurrent Liabilities
Pension and other postretirement benefits - noncurrent	983			1,054
Asbestos-related liabilities - noncurrent	1,179			1,237
Other noncurrent obligations	141			151
Total other noncurrent liabilities	2,303			2,442
Stockholder's Equity
Common stock (authorized: 1,000 shares of $0.01 par value each; issued: 935.51 shares)	—			—
Additional paid-in capital	138			138
Retained earnings	3,061			2,582
Accumulated other comprehensive loss	(1,572		)	(1,352		)
Union Carbide Corporation's stockholder's equity	1,627			1,368
Total Liabilities and Equity	$	5,497		$	5,619

See Notes to the Consolidated Financial Statements.

6

Union Carbide Corporation and Subsidiaries

Consolidated Statements of Cash Flows

	Six Months Ended
In millions (Unaudited)	Jun 30, 2018			Jun 30, 2017
Operating Activities
Net income attributable to Union Carbide Corporation	$	471		$	355
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	101			98
Provision for deferred income tax	16			85
Net gain on sales of property and investments	—			(26		)
Net gain on sale of ownership interest in nonconsolidated affiliate	—			(4		)
Restructuring and asset related charges - net	2			2
Net periodic pension benefit cost	22			14
Pension contributions	(41		)	(161		)
Changes in assets and liabilities:
Accounts and notes receivable	(8		)	7
Related company receivables	129			88
Inventories	(4		)	—
Accounts payable	(18		)	12
Related company payables	(221		)	(32		)
Asbestos-related payments	(59		)	(68		)
Other assets and liabilities	(44		)	29
Cash provided by operating activities	346			399
Investing Activities
Capital expenditures	(101		)	(98		)
Change in noncurrent receivable from related company	(1		)	2
Proceeds from sale of ownership interest in nonconsolidated affiliate	—			22
Proceeds from sales of property	—			18
Proceeds from sales of investments	—			8
Cash used for investing activities	(102		)	(48		)
Financing Activities
Dividends paid to parent	(246		)	(350		)
Changes in short-term notes payable	2			1
Cash used for financing activities	(244		)	(349		)
Summary
Increase in cash and cash equivalents	—			2
Cash and cash equivalents at beginning of year	13			11
Cash and cash equivalents at end of period	$	13		$	13

See Notes to the Consolidated Financial Statements.

7

Union Carbide Corporation and Subsidiaries

Consolidated Statements of Equity

In millions (Unaudited)	Common Stock		Additional Paid-in Capital		Retained Earnings			Accum. Other Comp Loss			Total Equity
2017
Balance at Jan 1, 2017	$	—	$	138	$	2,980		$	(1,320	)	$	1,798
Net income attributable to Union Carbide Corporation	—		—		355			—			355
Other comprehensive income	—		—		—			27			27
Dividends declared	—		—		(350		)	—			(350		)
Other	—		—		1			—			1
Balance at Jun 30, 2017	$	—	$	138	$	2,986		$	(1,293	)	$	1,831
2018
Balance at Jan 1, 2018	$	—	$	138	$	2,582		$	(1,352	)	$	1,368
Adoption of accounting standard (Note 1)	—		—		254			(254		)	—
Net income attributable to Union Carbide Corporation	—		—		471			—			471
Other comprehensive income	—		—		—			34			34
Dividends declared	—		—		(246		)	—			(246		)
Balance at Jun 30, 2018	$	—	$	138	$	3,061		$	(1,572	)	$	1,627

See Notes to the Consolidated Financial Statements.

8

Union Carbide Corporation and Subsidiaries

Notes to the Consolidated Financial Statements

(Unaudited)

Table of Contents

Note		Page
1	Consolidated Financial Statements	9
2	Recent Accounting Guidance	11
3	Revenue	12
4	Restructuring and Asset Related Charges - Net	13
5	Income Taxes	13
6	Inventories	14
7	Intangible Assets	15
8	Commitments and Contingent Liabilities	15
9	Accumulated Other Comprehensive Loss	17
10	Pension Plans and Other Postretirement Benefits	18
11	Fair Value Measurements	18
12	Related Party Transactions	19

NOTE 1 - CONSOLIDATED FINANCIAL STATEMENTS

Basis of Presentation

The unaudited interim consolidated financial statements of Union Carbide Corporation and its subsidiaries (the "Corporation" or "UCC") were prepared in accordance with accounting principles generally accepted in the United States of America ("U.S. GAAP") and reflect all adjustments (including normal recurring accruals) which, in the opinion of management, are considered necessary for the fair presentation of the results for the periods presented. These statements should be read in conjunction with the audited consolidated financial statements and notes thereto included in the Corporation’s Annual Report on Form 10-K for the year ended December 31, 2017.

The Corporation is a wholly owned subsidiary of The Dow Chemical Company ("Dow"). In accordance with the accounting guidance for earnings per share, the presentation of earnings per share is not required in financial statements of wholly owned subsidiaries.

The Corporation’s business activities comprise components of Dow’s global operations rather than stand-alone operations. Dow conducts its worldwide operations through principal product groups. Because there are no separable reportable business segments for UCC under the accounting guidance related to segment reporting and no detailed business information is provided to a chief operating decision maker regarding the Corporation’s stand-alone operations, the Corporation’s results are reported as a single operating segment.

Effective August 31, 2017, pursuant to the merger of equals transaction contemplated by the Agreement and Plan of Merger, dated as of December 11, 2015, as amended on March 31, 2017, Dow and E. I. du Pont de Nemours and Company ("DuPont") each merged with subsidiaries of DowDuPont Inc. ("DowDuPont") and, as a result, Dow and DuPont became subsidiaries of DowDuPont (the "Merger"). Following the Merger, Dow and DuPont intend to pursue, subject to approval by the board of directors of DowDuPont, the separation of the combined company's agriculture business, specialty products business and materials science business through one or more tax-efficient transactions.

Intercompany transactions and balances are eliminated in consolidation. Transactions with the Corporation’s parent company, Dow, and other subsidiaries of Dow and DowDuPont, have been reflected as related company transactions in the consolidated financial statements. See Note 12 for additional information.

9

Union Carbide Corporation and Subsidiaries

Notes to the Consolidated Financial Statements

(Unaudited)

Significant Accounting Policy Updates

In the first quarter of 2018, the Corporation adopted Accounting Standards Update ("ASU") 2014-09, "Revenue from Contracts with Customers (Topic 606)" and the associated ASUs (collectively, "Topic 606"). See Notes 2 and 3 for additional information. The Corporation's significant accounting policy for Revenue was updated as a result of the adoption of Topic 606:

Revenue

Substantially all of the Corporation's revenues are generated by sales to Dow. Revenue for product sales to related companies is recognized when the related company obtains control of the product, which occurs either at the time that production is complete or shipped free on board ("FOB") from UCC's manufacturing facility, in accordance with the sales agreement between the Corporation and Dow.

The Corporation recognizes revenue for product sales to trade customers when its customer obtains control of promised goods or services, in an amount that reflects the consideration which the Corporation expects to receive in exchange for those goods or services. To determine revenue recognition for the arrangements that the Corporation determines are within the scope of Topic 606, the Corporation performs the following five steps: (1) identify the contract(s) with a customer, (2) identify the performance obligations in the contract, (3) determine the transaction price, (4) allocate the transaction price to the performance obligations in the contract, and (5) recognize revenue when (or as) the entity satisfies a performance obligation.

In the second quarter of 2018, the Corporation adopted ASU 2018-02, "Income Statement - Reporting Comprehensive Income (Topic 220): Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income," which resulted in a $254 million increase to retained earnings due to the reclassification from accumulated other comprehensive loss for the effect of the federal corporate income tax rate change as a result of the Tax Cuts and Jobs Act of 2017 ("The Act") on the Corporation's pension plans. This reclassification is reflected in the "Adoption of accounting standard" line in the consolidated statements of equity. The Corporation's significant accounting policy for Income Taxes was updated as a result of the adoption of ASU 2018-02 to indicate the Corporation uses the portfolio approach for releasing income tax effects from accumulated other comprehensive loss. See Note 2 for additional information.

Changes in Financial Statement Presentation

Consolidated Statements of Income

In the third quarter of 2017, the Corporation changed the presentation on the face of the consolidated statements of income to conform with the presentation that was adopted for DowDuPont. As a result, "Interest income" has been reclassified to "Sundry income (expense) - net."

In the first quarter of 2018, the Corporation adopted ASU 2017-07, "Compensation - Retirement Benefits (Topic 715): Improving the Presentation of Net Periodic Pension Cost and Net Periodic Postretirement Benefit Cost," which required retrospective application for the reclassification of net periodic benefit costs, other than the service cost component, from "Cost of sales" to "Sundry income (expense) - net." See Note 2 for additional information.

The changes to the consolidated statements of income as a result of the Merger and the retrospective adoption of ASU 2017-07 are summarized below:

Summary of Changes to the Consolidated Statements of Income	Three Months Ended Jun 30, 2017				Six Months Ended Jun 30, 2017
In millions	As Filed		Updated		As Filed		Updated
Cost of sales	$	1,024	$	1,025	$	2,065	$	2,067
Sundry income (expense) - net	$	17	$	23	$	5	$	16
Interest income	$	5	$	—	$	9	$	—

10

Union Carbide Corporation and Subsidiaries

Notes to the Consolidated Financial Statements

(Unaudited)

Consolidated Statements of Cash Flows

In the third quarter of 2017, the Corporation changed the presentation to the consolidated statements of cash flows to conform with the presentation that was adopted for DowDuPont. "Net periodic pension benefit cost" is now separately reported and has been reclassified from "Other assets and liabilities." Prior periods have been updated to conform with the current year presentation and are summarized below:

Summary of Changes to the Consolidated Statements of Cash Flows	Six Months Ended Jun 30, 2017
In millions	As Filed		Updated
Operating Activities
Net periodic pension benefit cost	$	—	$	14
Other assets and liabilities	$	43	$	29

NOTE 2 - RECENT ACCOUNTING GUIDANCE

Recently Adopted Accounting Guidance

In the second quarter of 2018, the Corporation early adopted ASU 2018-02, "Income Statement - Reporting Comprehensive Income (Topic 220): Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income," which allows a reclassification from accumulated other comprehensive income to retained earnings for stranded tax effects resulting from The Act, which was enacted on December 22, 2017, and requires certain disclosures about stranded tax effects. An entity has the option of applying the new guidance at the beginning of the period of adoption or retrospectively to each period (or periods) in which the tax effects related to items remaining in accumulated other comprehensive income are recognized. The new standard is effective for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2018, and early adoption is permitted, including adoption in an interim period for reporting periods in which the financial statements have not yet been issued. The Corporation's adoption of the new standard was applied prospectively at the beginning of the second quarter of 2018, with a reclassification of the stranded tax effects as a result of The Act from accumulated other comprehensive loss to retained earnings. See Note 1 for additional information.

In the first quarter of 2018, the Corporation adopted ASU 2014-09, "Revenue from Contracts with Customers (Topic 606)," which is the new comprehensive revenue recognition standard that supersedes the revenue recognition requirements in Topic 605, "Revenue Recognition," and most industry specific guidance. The standard's core principle is that a company will recognize revenue when it transfers promised goods or services to a customer in an amount that reflects the consideration to which the company expects to be entitled in exchange for those goods or services. In 2015 and 2016, the Financial Accounting Standards Board ("FASB") issued additional ASUs related to Topic 606 that delayed the effective date of the guidance and clarified various aspects of the new revenue guidance, including principal versus agent considerations, identification of performance obligations, and accounting for licenses, and included other improvements and practical expedients. The new guidance was effective for annual and interim periods beginning after December 15, 2017. The Corporation elected to adopt the new guidance using the modified retrospective transition method for all contracts not completed as of the date of adoption, which requires the cumulative effect of applying the new revenue standard as an adjustment to the opening balance of retained earnings in the first period of adoption. As a result of adopting the new guidance, there were no adjustments required to retained earnings at the beginning of the first quarter of 2018 and there was no impact on the consolidated financial statements. The comparative periods have not been restated and continue to be accounted for under Topic 605. See Notes 1 and 3 for additional disclosures regarding the Corporation's contracts with customers as well as the impact of adopting Topic 606.

In the first quarter of 2018, the Corporation adopted ASU 2016-16, "Income Taxes (Topic 740): Intra-Entity Transfers of Assets Other Than Inventory," which requires an entity to recognize the income tax consequences of an intra-entity transfer of an asset other than inventory when the transfer occurs. The amendments were effective for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2017, and applied on a modified retrospective basis through a cumulative-effect adjustment directly to retained earnings at the beginning of the period of adoption. The adoption of this guidance did not have an impact on the consolidated financial statements.

In the first quarter of 2018, the Corporation adopted ASU 2017-07, "Compensation - Retirement Benefits (Topic 715): Improving the Presentation of Net Periodic Pension Cost and Net Periodic Postretirement Benefit Cost," which amends the requirements related to the income statement presentation of the components of net periodic benefit cost for employer sponsored defined benefit

11

Union Carbide Corporation and Subsidiaries

Notes to the Consolidated Financial Statements

(Unaudited)

pension and other postretirement benefit plans. Under the new guidance, an entity must disaggregate and present the service cost component of net periodic benefit cost in the same income statement line item(s) as other employee compensation costs arising from services rendered during the period, and only the service cost component will be eligible for capitalization. Other components of net periodic benefit cost must be presented separately from the line item(s) that includes the service cost. The new standard was effective for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2017. Entities were required to use a retrospective transition method to adopt the requirement for separate income statement presentation of the service cost and other components, and a prospective transition method to adopt the requirement to limit the capitalization of benefit cost to the service component. In the first quarter of 2018, the Corporation used a retrospective transition method to reclassify net periodic benefit cost, other than the service component, from "Cost of sales" to "Sundry income (expense) - net" in the consolidated statements of income. See Note 1 for additional information.

Accounting Guidance Issued But Not Adopted at June 30, 2018

In February 2016, the FASB issued ASU 2016-02, "Leases (Topic 842)," which requires organizations that lease assets to recognize on the balance sheet the assets and liabilities for the rights and obligations created by those leases. The new guidance requires that a lessee recognize assets and liabilities for leases with lease terms of more than twelve months and recognition, presentation and measurement in the financial statements will depend on its classification as a finance or operating lease. In addition, the new guidance will require disclosures to help investors and other financial statement users better understand the amount, timing and uncertainty of cash flows arising from leases. Lessor accounting remains largely unchanged from current U.S. GAAP but does contain some targeted improvements to align with the new revenue recognition guidance issued in 2014 (ASU 2014-09). The new standard is effective for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2018, using a modified retrospective approach, and early adoption is permitted. The Corporation has a cross-functional team in place to evaluate and implement the new guidance. The team continues to review existing lease arrangements and has engaged a third party to assist with the collection of lease data. The impact of applying the practical expedients and accounting policy elections has been evaluated and the Corporation is in the process of documenting the related considerations and decisions. The Corporation is currently implementing a software solution, enhancing accounting systems and updating business processes and controls related to leases. Collectively, these activities are expected to facilitate the Corporation's ability to meet the new accounting and disclosure requirements upon adoption in the first quarter of 2019. The Corporation is working to quantify the impact and anticipates that the adoption of the new standard will result in a material increase in lease-related assets and liabilities in the consolidated balance sheets.

NOTE 3 - REVENUE

Substantially all of the Corporation's revenues are generated by intercompany sales to Dow. Products are sold to and purchased from Dow at market-based prices in accordance with the terms of Dow’s intercompany pricing policies. Approximately 99 percent of the Corporation's sales for the three and six months ended June 30, 2018, related to sales of product (99 percent in the three and six months ended June 30, 2017); the remaining 1 percent related to the licensing of patents and technology. The Corporation sells its products to Dow to simplify the customer interface process.

Substantially all product sale contracts are short-term in nature and have original expected durations of one year or less. Revenue from product sales is recognized when Dow or the customer obtains control of the Corporation’s product, which occurs at a point in time, typically at the time production is complete or product is shipped FOB from UCC’s manufacturing facility for sales to Dow, or upon shipment for sales to trade customers. The Corporation’s payment terms are on average 40 to 60 days after invoicing. All shipping and handling activities that occur after control transfers to the customer are considered fulfillment activities. Certain long-term contracts include a series of distinct goods that are delivered continuously to the customer through a pipeline. For these types of product sales, the Corporation invoices the customer in an amount that directly corresponds with the value to the customer of the Corporation’s performance to date. As a result, revenue is recognized based on the amount billable to the customer in accordance with the right to invoice practical expedient.

The transaction price for product sales includes estimates for the most likely amount of consideration to which the Corporation will be entitled based on historical award experience and the Corporation’s best judgment at the time. Taxes collected and remitted to governmental authorities are excluded from the transaction price. For contracts with multiple performance obligations, the Corporation allocates the transaction price to each performance obligation on the basis of relative standalone selling price, which is based on the price charged to customers or estimated using the expected cost plus margin method.

12

Union Carbide Corporation and Subsidiaries

Notes to the Consolidated Financial Statements

(Unaudited)

Revenue related to the initial licensing of patents and technology is recognized when the performance obligation is satisfied. Revenue related to sales-based royalties to which the Corporation expects to be entitled is estimated based on historical sales.

The Corporation’s contract liabilities include payments received in advance of performance under long-term contracts for product sales and royalties, and are realized when the associated revenue is recognized under the contract with remaining contract terms that range up to 23 years. The Corporation will have rights to future consideration for revenue recognized when product is delivered to the customer. The balance of contract liabilities was $42 million at June 30, 2018 ($43 million at December 31, 2017) and was included in "Accrued and other current liabilities" and "Other noncurrent obligations" in the consolidated balance sheets.

The Corporation disaggregates its revenue from contracts with customers by type of customer (sales to related parties and sales to trade customers) as presented in the consolidated statements of income and believes this disaggregation best depicts the nature, amount, timing and uncertainty of its revenue and cash flows. Substantially all of the product sales are made to the parent entity, Dow, and there are no unique economic factors that affect revenue recognition and cash flows associated with these product sales.

NOTE 4 - RESTRUCTURING AND ASSET RELATED CHARGES - NET

In September 2017, the Corporation approved restructuring actions that are aligned with DowDuPont’s synergy targets. As a result of these actions, the Corporation recorded a pretax restructuring charge for severance and related benefit costs of $8 million in the third quarter of 2017. In November 2017, the Corporation approved additional restructuring actions in connection with the restructuring program. A pretax restructuring charge for severance and related benefit costs of $2 million was recorded in the fourth quarter of 2017, as well as charges of $62 million for the write-off and write-down of manufacturing and facility related assets at multiple UCC sites, including a steam unit in Institute, West Virginia.

In addition to actions taken in 2017, the Corporation recorded pretax charges of $1 million in the second quarter of 2018 ($2 million for the first six months of 2018) for additional restructuring charges for severance and related benefit costs. At June 30, 2018, severance of $6 million had been paid, leaving a liability of $6 million. The impact of this charge was shown as “Restructuring and asset related charges - net” in the consolidated statements of income. These actions are expected to be substantially completed by September 30, 2019.

The Corporation expects to incur additional costs in the future related to restructuring activities, as UCC continually looks for ways to enhance the efficiency and cost effectiveness of its operations. The Corporation expects to incur additional employee-related costs, including involuntary termination benefits, related to its other optimization activities. These costs cannot be reasonably estimated at this time.

NOTE 5 - INCOME TAXES

On December 22, 2017, The Act was enacted. The Act reduces the U.S. federal corporate income tax rate from 35 percent to 21 percent, requires companies to pay a one-time transition tax on earnings of certain foreign subsidiaries that were previously deferred, creates new provisions related to foreign sourced earnings, eliminates the domestic manufacturing deduction and moves towards a territorial system. At June 30, 2018, the Corporation had not completed its accounting for the tax effects of The Act; however, as described below, the Corporation made reasonable estimates of the effects on its existing deferred tax balances and the one-time transition tax. In accordance with Staff Accounting Bulletin 118, income tax effects of The Act may be refined upon obtaining, preparing, or analyzing additional information during the measurement period and such changes could be material. During the measurement period, provisional amounts may also be adjusted for the effects, if any, of interpretative guidance issued after December 31, 2017, by U.S. regulatory and standard-setting bodies.

• As a result of The Act, the Corporation remeasured its U.S. federal deferred tax assets and liabilities based on the income tax rates at which they are expected to reverse in the future, which is generally 21 percent. However, the Corporation is still analyzing certain aspects of The Act and refining its calculations. Adjustments in the first half of 2018 were insignificant. To date, the provisional amount recorded related to the remeasurement of the Corporation’s deferred tax balance was $250 million, recorded as a charge to “Provision for income taxes."

• The Act requires a mandatory deemed repatriation of post-1986 undistributed foreign earnings and profits (“E&P”), which results in a one-time transition tax. As a result, the provisional amount recorded for the transition tax liability for its foreign subsidiaries was insignificant at June 30, 2018. The Corporation has not yet completed its calculation of the total

13

Union Carbide Corporation and Subsidiaries

Notes to the Consolidated Financial Statements

(Unaudited)

post-1986 foreign E&P for its foreign subsidiaries as E&P will not be finalized until the DowDuPont federal income tax return is filed.

• The Corporation recorded an indirect impact of The Act related to prepaid tax on intercompany sales of inventory. The amount related to the inventory was $2 million, recorded as a charge to "Provision for income taxes" in the first quarter of 2018.

• For tax years beginning after December 31, 2017, The Act introduces new provisions for U.S. taxation of certain global intangible low-taxed income ("GILTI"). The Corporation is evaluating the policy election on whether the additional liability will be recorded in the period in which it is incurred or recognized for the basis differences that would be expected to reverse in future years.

In the first quarter of 2018, a settlement was reached for a tax matter regarding fees paid to the Corporation by a foreign nonconsolidated affiliate. As a result, the Corporation recorded an increase of $40 million to "Income taxes receivable" and "Income taxes payable" in the consolidated balance sheets. There was no impact to the consolidated statements of income. In the second quarter of 2018, a payment of $40 million was made for the settlement of the tax matter.

The Corporation is included in Dow's consolidated federal income tax group and consolidated tax return. Current and deferred tax expenses are calculated for the Corporation as a stand-alone group and are allocated to the group from the consolidated totals, consistent with the Dow-UCC Tax Sharing Agreement. UCC is currently under examination in a number of tax jurisdictions, including the U.S. federal and various state jurisdictions. It is reasonably possible that these examinations may be resolved in the next twelve months. The impact on the Corporation’s results of operations is not expected to be material.

NOTE 6 - INVENTORIES

The following table provides a breakdown of inventories:

Inventories	Jun 30, 2018			Dec 31, 2017
In millions
Finished goods	$	227		$	222
Work in process	51			47
Raw materials	43			48
Supplies	78			73
Total	$	399		$	390
Adjustment of inventories to a LIFO basis	(117		)	(112		)
Total inventories	$	282		$	278

14

Union Carbide Corporation and Subsidiaries

Notes to the Consolidated Financial Statements

(Unaudited)

NOTE 7 - INTANGIBLE ASSETS

The following table provides information regarding the Corporation’s intangible assets:

Intangible Assets	Jun 30, 2018							Dec 31, 2017
In millions	Gross Carrying Amount		Accumulated Amortization			Net		Gross Carrying Amount		Accumulated Amortization			Net
Intangible assets with finite lives:
Licenses and developed technology	$	33	$	(33	)	$	—	$	33	$	(33	)	$	—
Software	80		(52		)	28		74		(49		)	25
Total intangible assets	$	113	$	(85	)	$	28	$	107	$	(82	)	$	25

Total estimated amortization expense for 2018 and the five succeeding fiscal years is as follows:

Estimated Amortization Expense
In millions
2018	$	7
2019	$	7
2020	$	7
2021	$	5
2022	$	3
2023	$	1

NOTE 8 - COMMITMENTS AND CONTINGENT LIABILITIES

Environmental Matters

Accruals for environmental matters are recorded when it is probable that a liability has been incurred and the amount of the liability can be reasonably estimated, based on current law and existing technologies.

At June 30, 2018, the Corporation had accrued obligations of $105 million for probable environmental remediation and restoration costs, including $18 million for the remediation of Superfund sites. These obligations are included in "Accrued and other current liabilities" and "Other noncurrent obligations" in the consolidated balance sheets. This is management’s best estimate of the costs for remediation and restoration with respect to environmental matters for which the Corporation has accrued liabilities, although it is reasonably possible that the ultimate cost with respect to these particular matters could range up to approximately three times that amount. Consequently, it is reasonably possible that environmental remediation and restoration costs in excess of amounts accrued could have a material impact on the Corporation's results of operations, financial condition and cash flows. It is the opinion of the Corporation’s management that the possibility is remote that costs in excess of the range disclosed will have a material impact on the Corporation’s results of operations, financial condition and cash flows. Inherent uncertainties exist in these estimates primarily due to unknown environmental conditions, changing governmental regulations and legal standards regarding liability, and emerging remediation technologies for handling site remediation and restoration. At December 31, 2017, the Corporation had accrued obligations of $114 million for probable environmental remediation and restoration costs, including $19 million for the remediation of Superfund sites.

Litigation

The Corporation is involved in a number of legal proceedings and claims with both private and governmental parties. These cover a wide range of matters, including, but not limited to: product liability; trade regulation; governmental regulatory proceedings; health, safety and environmental matters; employment; patents; contracts; taxes; and commercial disputes.

15

Union Carbide Corporation and Subsidiaries

Notes to the Consolidated Financial Statements

(Unaudited)

Asbestos-Related Matters

A summary of asbestos-related matters can be found in Note 14 to the Consolidated Financial Statements included in the Corporation's Annual Report on Form 10-K for the year ended December 31, 2017.

Introduction

The Corporation is and has been involved in a large number of asbestos-related suits filed primarily in state courts during the past four decades. These suits principally allege personal injury resulting from exposure to asbestos-containing products and frequently seek both actual and punitive damages. The alleged claims primarily relate to products that UCC sold in the past, alleged exposure to asbestos-containing products located on UCC’s premises and UCC’s responsibility for asbestos suits filed against a former UCC subsidiary, Amchem Products, Inc. ("Amchem"). In many cases, plaintiffs are unable to demonstrate that they have suffered any compensable loss as a result of such exposure, or that injuries incurred in fact resulted from exposure to the Corporation’s products.

The Corporation expects more asbestos-related suits to be filed against UCC and Amchem in the future, and will aggressively defend or reasonably resolve, as appropriate, both pending and future claims.

Estimating the Asbestos-Related Liability

Since 2003, the Corporation has engaged Ankura Consulting Group, LLC ("Ankura"), a third party actuarial specialist, to review the Corporation's historical asbestos-related claim and resolution activity in order to assist UCC management in estimating the Corporation's asbestos-related liability. Each year, Ankura has reviewed the claim and resolution activity to determine the appropriateness of updating the most recent Ankura study.

Based on the December 2017 Ankura review and the Corporation's own review of the data, the Corporation's total asbestos-related liability through the terminal year of 2049, including asbestos-related defense and processing costs, was $1,369 million at December 31, 2017, and was included in “Asbestos-related liabilities - current” and “Asbestos-related liabilities - noncurrent” in the consolidated balance sheets.

Each quarter, the Corporation reviews claims filed, settled and dismissed, as well as average settlement and resolution costs by disease category. The Corporation also considers additional quantitative and qualitative factors such as the nature of pending claims, trial experience of the Corporation and other asbestos defendants, current spending for defense and processing costs, significant appellate rulings and legislative developments, trends in the tort system, and their respective effects on expected future resolution costs. UCC management considers all these factors in conjunction with the most recent Ankura study and determines whether a change in the estimate is warranted. Based on the Corporation's review of 2018 activity, it was determined that no adjustment to the accrual was required at June 30, 2018.

The Corporation’s asbestos-related liability for pending and future claims and defense and processing costs was $1,310 million at June 30, 2018, and approximately 16 percent of the recorded liability related to pending claims and approximately 84 percent related to future claims.

Summary

The Corporation's management believes the amounts recorded for the asbestos-related liability (including defense and processing costs) reflect reasonable and probable estimates of the liability based on current, known facts. However, future events, such as the number of new claims to be filed and/or received each year and the average cost of defending and disposing of each such claim, as well as the numerous uncertainties surrounding asbestos litigation in the United States, could cause the actual costs for the Corporation to be higher or lower than those projected or those recorded. Any such event could result in an increase or decrease in the recorded liability.

Because of the uncertainties described above, the Corporation cannot estimate the full range of the cost of resolving pending and future asbestos-related claims facing UCC and Amchem. As a result, it is reasonably possible that an additional cost of disposing of asbestos-related claims, including future defense and processing costs, could have a material impact on the Corporation's results of operations and cash flows for a particular period and on the consolidated financial position.

16

Union Carbide Corporation and Subsidiaries

Notes to the Consolidated Financial Statements

(Unaudited)

Other Litigation

While it is not possible at this time to determine with certainty the ultimate outcome of any of the legal proceedings and claims referred to in this filing, management believes that the possibility is remote that the aggregate of all such other claims and lawsuits will have a material adverse impact on the results of operations, cash flows and financial position of the Corporation.

NOTE 9 - ACCUMULATED OTHER COMPREHENSIVE LOSS

The following table summarizes the changes and after-tax balances of each component of accumulated other comprehensive loss for the six months ended June 30, 2018 and 2017:

Accumulated Other Comprehensive Loss	Cumulative Translation Adj			Pension and Other Postretire Benefits			Total Accum Other Comp Loss
In millions
Balance at Jan 1, 2017	$	(62	)	$	(1,258	)	$	(1,320	)
Amounts reclassified from accumulated other comprehensive loss	3			24			27
Balance at Jun 30, 2017	$	(59	)	$	(1,234	)	$	(1,293	)
Balance at Jan 1, 2018	$	(59	)	$	(1,293	)	$	(1,352	)
Amounts reclassified from accumulated other comprehensive loss	1			33			34
Reclassification of stranded tax effects 1	—			(254		)	(254		)
Balance at Jun 30, 2018	$	(58	)	$	(1,514	)	$	(1,572	)

1. Amounts reclassified to retained earnings as a result of the adoption of ASU 2018-02. See Notes 1 and 2 for additional information.

The tax effects on the net activity related to each component of other comprehensive loss for the three and six months ended June 30, 2018 and 2017 were as follows:

Tax Benefit	Three Months Ended				Six Months Ended
In millions	Jun 30, 2018		Jun 30, 2017		Jun 30, 2018		Jun 30, 2017
Pension and other postretirement benefit plans	$	4	$	8	$	10	$	16

A summary of the reclassifications out of accumulated other comprehensive loss for the three and six months ended June 30, 2018 and 2017 is provided as follows:

Reclassifications Out of Accumulated Other Comprehensive Loss	Three Months Ended						Six Months Ended						Consolidated Statements of Income Classification
	Jun 30, 2018			Jun 30, 2017			Jun 30, 2018			Jun 30, 2017
In millions
Cumulative translation adjustments	$	1		$	3		$	1		$	3		See (1) below
Pension and other postretirement benefit plans	$	21		$	20		$	43		$	40		See (2) below
Tax benefit	(4		)	(8		)	(10		)	(16		)	See (3) below
After tax	$	17		$	12		$	33		$	24
Total reclassifications for the period, after tax	$	18		$	15		$	34		$	27

1. "Sundry income (expense) - net."

2. Included in the computation of net periodic benefit cost of the Corporation's pension and other postretirement plans. See Note 10 for additional information.

3. "Provision for income taxes."

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Union Carbide Corporation and Subsidiaries

Notes to the Consolidated Financial Statements

(Unaudited)

NOTE 10 - PENSION PLANS AND OTHER POSTRETIREMENT BENEFITS

The following table provides the components of the Corporation's net periodic benefit cost for all significant plans:

Net Periodic Benefit Cost (Credit) for All Significant Plans	Three Months Ended						Six Months Ended
In millions	Jun 30, 2018			Jun 30, 2017			Jun 30, 2018			Jun 30, 2017
Defined Benefit Pension Plans:
Service cost	$	10		$	9		$	20		$	18
Interest cost	32			32			64			64
Expected return on plan assets	(54		)	(55		)	(109		)	(110		)
Amortization of net loss	23			21			47			42
Net periodic benefit cost	$	11		$	7		$	22		$	14
Other Postretirement Benefits:
Interest cost	$	1		$	2		$	3		$	4
Amortization of net gain	(2		)	(1		)	(4		)	(2		)
Net periodic benefit cost (credit)	$	(1	)	$	1		$	(1	)	$	2

On January 1, 2018, the Corporation adopted ASU 2017-07, which impacted the presentation of the components of net periodic benefit cost in the consolidated statements of income. Net periodic benefit cost, other than the service cost component, is retrospectively included in "Sundry income (expense) - net" in the consolidated statements of income. See Notes 1 and 2 for additional information.

NOTE 11 - FAIR VALUE MEASUREMENTS

The Corporation's financial instruments are classified as Level 2 measurements. For assets and liabilities classified as Level 2 measurements, where the security is frequently traded in less active markets, fair value is based on the closing price at the end of the period; where the security is less frequently traded, fair value is based on the price a dealer would pay for the security or similar securities, adjusted for any terms specific to that asset or liability, or by using observable market data points of similar, more liquid securities to imply the price. Market inputs are obtained from well-established and recognized vendors of market data and subjected to tolerance/quality checks.

The following table summarizes the fair value of the Corporation's financial instruments at June 30, 2018 and December 31, 2017:

Fair Value of Financial Instruments	Jun 30, 2018											Dec 31, 2017
In millions	Cost			Gain		Loss			Fair Value			Cost			Gain		Loss			Fair Value
Cash equivalents 1	$	9		$	—	$	—		$	9		$	9		$	—	$	—		$	9
Long-term debt including debt due within one year	$	(475	)	$	—	$	(94	)	$	(569	)	$	(475	)	$	—	$	(129	)	$	(604	)

1. Money market fund is included in "Cash and cash equivalents" in the consolidated balance sheets and held at amortized cost, which approximates fair value.

Cost approximates fair value for all other financial instruments.

18

Union Carbide Corporation and Subsidiaries

Notes to the Consolidated Financial Statements

(Unaudited)

NOTE 12 - RELATED PARTY TRANSACTIONS

The Corporation sells its products to Dow to simplify the customer interface process. Products are sold to and purchased from Dow at market-based prices in accordance with the terms of Dow’s intercompany pricing policies. After each quarter, the Corporation and Dow analyze the pricing used for the sales in that quarter and reach agreement on any necessary adjustments, at which point the prices are final. The Corporation also procures certain commodities and raw materials through a Dow subsidiary and pays a commission to that Dow subsidiary based on the volume and type of commodities and raw materials purchased. The commission expense is included in "Sundry income (expense) - net" in the consolidated statements of income. Purchases from that Dow subsidiary were $379 million in the second quarter of 2018 ($406 million in the second quarter of 2017) and $812 million during the first six months of 2018 ($836 million during the first six months of 2017).

The Corporation has a master services agreement with Dow whereby Dow provides services including, but not limited to, accounting, legal, treasury (investments, cash management, risk management, insurance), procurement, human resources, environmental, health and safety and business management for UCC. Under the master services agreement with Dow, general administrative and overhead type services that Dow routinely allocates to various businesses are charged to UCC. The master services agreement cost allocation basis is headcount and includes a 10 percent service fee. This agreement resulted in expense of $7 million in the second quarter of 2018 ($8 million in the second quarter of 2017) and $14 million for the first six months of 2018 ($16 million for the first six months of 2017) for general administrative and overhead type services and the 10 percent service fee, included in "Sundry income (expense) - net" in the consolidated statements of income. The remaining activity-based costs were $22 million in the second quarter of 2018 ($23 million in the second quarter of 2017) and $44 million in the first six months of 2018 ($40 million in the first six months of 2017), and were included in "Cost of sales" in the consolidated statements of income.

Management believes the method used for determining expenses charged by Dow is reasonable. Dow provides these services by leveraging its centralized functional service centers to provide services at a cost that management believes provides an advantage to the Corporation.

The monitoring and execution of risk management policies related to interest rate and foreign currency risks, which are based on Dow’s risk management philosophy, are provided as a service to UCC.

As part of Dow’s cash management process, UCC is a party to revolving loans with Dow that have interest rates based on LIBOR (London Interbank Offered Rate) with varying maturities. At June 30, 2018, the Corporation had a note receivable of $1.1 billion ($1.2 billion at December 31, 2017) from Dow under a revolving loan agreement. The Corporation may draw from this note receivable in support of its daily working capital requirements and, as such, the net effect of cash inflows and outflows under this revolving loan agreement is presented in the consolidated statements of cash flows as an operating activity.

The Corporation also has a separate revolving credit agreement with Dow that allows the Corporation to borrow or obtain credit enhancements up to an aggregate of $1 billion that matures December 30, 2018. Dow may demand repayment with a 30-day written notice to the Corporation, subject to certain restrictions. A related collateral agreement provides for the replacement of certain existing pledged assets, primarily equity interests in various subsidiaries, with cash collateral. At June 30, 2018, $948 million was available under the revolving credit agreement ($949 million at December 31, 2017). The cash collateral is reported as “Noncurrent receivables from related companies” in the consolidated balance sheets.

On a quarterly basis, the Corporation's Board of Directors reviews and determines if there will be a dividend distribution to its parent company and sole shareholder, Dow. The Board takes into consideration the level of earnings and cash flows, among other factors, in determining the amount of the dividend distribution. In the second quarter of 2018, the Corporation declared and paid a cash dividend of $135 million to Dow; dividends to Dow totaled $246 million in the first six months of 2018. In the second quarter of 2017, the Corporation declared and paid a cash dividend of $181 million to Dow; dividends to Dow totaled $350 million for the first six months of 2017.

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Union Carbide Corporation and Subsidiaries

ITEM 2. MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS

Pursuant to General Instruction H(1)(a) and (b) for Form 10-Q "Omission of Information by Certain Wholly-Owned Subsidiaries," the Corporation is filing this Form 10-Q with a reduced disclosure format.

References to "Dow" refer to The Dow Chemical Company and its consolidated subsidiaries, except as otherwise indicated by the context. Effective August 31, 2017, pursuant to the merger of equals transaction contemplated by the Agreement and Plan of Merger, dated as of December 11, 2015, as amended on March 31, 2017, Dow and E. I. du Pont de Nemours and Company ("DuPont") each merged with subsidiaries of DowDuPont Inc. ("DowDuPont") and, as a result, Dow and DuPont became subsidiaries of DowDuPont (the "Merger").

Dow conducts its worldwide operations through principal product groups. Union Carbide Corporation’s (the "Corporation" or "UCC") business activities comprise components of Dow’s principal product groups rather than stand-alone operations. Because there are no separable reportable business segments for UCC and no detailed business information is provided to a chief operating decision maker regarding the Corporation’s stand-alone operations, the Corporation’s results are reported as a single operating segment.

RESULTS OF OPERATIONS

Net Sales

Total net sales were $1,361 million in the second quarter of 2018 compared with $1,297 million in the second quarter of 2017, an increase of 5 percent. Total net sales were $2,679 million for the first six months of 2018 compared with $2,620 million for the first six months of 2017, an increase of 2 percent. Net sales to related companies, principally to Dow, and based on market prices for the related products, were $1,327 million in the second quarter of 2018 compared with $1,272 million in the second quarter of 2017, an increase of 4 percent. Net sales to related companies were $2,613 million in the first six months of 2018 compared with $2,538 million for the first six months of 2017, an increase of 3 percent.

Average selling prices increased 7 percent in the second quarter of 2018 compared with the same quarter last year. Price increases across almost all products were primarily driven by higher feedstock and other raw material costs and market demand, with the largest price increases in polyethylene, oxo alcohols and electrical and telecommunications. Total sales volume was down 2 percent in the second quarter of 2018 compared with the second quarter of 2017, primarily as a result of planned and unplanned maintenance turnaround activity. Increases in sales volume in electrical and telecommunications, acrylic monomers and oxo alcohols were more than offset by lower sales volume in vinyl acetate monomers and ethylene oxide/ethylene glycols.

For the first six months of 2018, average selling prices increased 6 percent compared with the first six months of 2017, with price increases across most products, driven by higher feedstock and other raw material costs, with the largest increases in polyethylene and oxo alcohols. Sales volume for the first six months of 2018 was down 4 percent when compared with the first six months of 2017. Sales volume decreases were driven by weather-related events on the U.S. Gulf Coast at the beginning of 2018, and planned and unplanned maintenance turnaround activity.

Certain countries where the Corporation's products are distributed or sold have recently enacted or are considering imposing new tariffs on certain products, including those manufactured at UCC production facilities. Currently enacted tariffs are not expected to have a significant impact on the Corporation's results of operations, and the Corporation continues to monitor ongoing tariff actions that have been announced but not implemented.

Cost of Sales

Cost of sales were $948 million in the second quarter of 2018 compared with $1,025 million in the second quarter of 2017, a decrease of 8 percent. Cost of sales decreased 1 percent from $2,067 million in the first six months of 2017 to $2,040 million for the first six months of 2018. Decreases in cost of sales for the three- and six-month periods ended June 30, 2018, were driven by decreased planned maintenance turnaround spending and decreased sales volume, which more than offset increased feedstock and other raw material costs when compared with the same periods last year.

Research and Development ("R&D"), Selling, General and Administrative ("SG&A") Expenses

R&D expenses were $5 million in the second quarter of 2018 compared with $8 million in the second quarter of 2017. For the first six months of 2018, R&D expenses were $10 million, flat when compared with the first six months of 2017. SG&A expenses were $2 million in the second quarter of 2018 compared with $1 million the second quarter of 2017. For the first six months of 2018, SG&A expenses were $4 million compared with $3 million in the first six months of 2017.

20

Union Carbide Corporation and Subsidiaries

Restructuring and Asset Related Charges - Net

In the second quarter of 2018, the Corporation recorded a pretax charge of $1 million ($2 million for the first six months of 2018) for additional severance and related benefit costs, aligned with the DowDuPont synergy targets. See Note 4 to the Consolidated Financial Statements for additional information on the Corporation's restructuring activities.

Sundry Income (Expense) - Net

Sundry income (expense) – net includes a variety of income and expense items such as the gain or loss on foreign currency exchange, commissions, charges for management services provided by Dow, interest income, non-operating pension and other postretirement benefit plan credits or costs, and gains and losses on sales of investments and assets. Sundry income (expense) - net in the second quarter of 2018 was expense of $8 million compared with income of $23 million in the same quarter last year. In the second quarter of 2017, UCC completed the sale of a parcel of land, which also included terminal assets and ancillary agreements for the supply of energy and site and terminal services, at the Texas City, Texas, manufacturing facility and recorded a pretax gain of $23 million. In the second quarter of 2017, UCC also completed the sale of its ownership interest in Asian Acetyls Co., LTD. ("ASACCO"), a nonconsolidated affiliate accounted for under the equity method of accounting. ASACCO agreed to purchase all of the shares of registered common stock owned by the Corporation and UCC recorded a pretax gain of $4 million on the sale.

For the first six months of 2018, sundry income (expense) - net was expense of $16 million compared with income of $16 million in the same period last year, which includes the pretax gains on the sales discussed above.

Interest Expense and Amortization of Debt Discount

Interest expense and amortization of debt discount was $6 million in the second quarter of 2018 compared with $7 million in the second quarter of 2017. For the first six months of 2018, interest expense and amortization of debt discount was $13 million compared with $14 million in the first six months of 2017.

Provision for Income Taxes

The Corporation reported a tax provision of $84 million in the second quarter of 2018, which resulted in an effective tax rate of 21.5 percent. This compared with a tax provision of $95 million in the second quarter of 2017, which resulted in an effective tax rate of 34.3 percent. For the first six months of 2018, the Corporation reported a tax provision of $122 million, which resulted in an effective tax rate of 20.6 percent. This compared with a tax provision of $185 million for the first six months of 2017, which resulted in an effective tax rate of 34.3 percent. The effective tax rate fluctuates based on, among other factors, where income is earned. The tax rate in the first two quarters of 2018 reflects the change in the U.S. federal corporate income tax rate as a result of the Tax Cuts and Jobs Act that was enacted on December 22, 2017, which reduced the U.S. federal corporate income tax rate from 35 percent to 21 percent, as well as a deduction in the U.S. related to certain sales to foreign customers.

Net Income Attributable to UCC

The Corporation reported net income of $306 million in the second quarter of 2018 compared with $182 million in the second quarter of 2017. Net income for the first six months of 2018 was $471 million compared with $355 million for the first six months of 2017.

Capital Expenditures

Capital spending in the second quarter of 2018 was $57 million ($101 million for the first six months of 2018) compared with $48 million in the second quarter of 2017 ($98 million for the first six months of 2017).

OTHER MATTERS

Recent Accounting Guidance

See Note 2 to the Consolidated Financial Statements for a summary of recent accounting guidance.

Critical Accounting Estimates

The preparation of financial statements and related disclosures in conformity with accounting principles generally accepted in the United States of America requires management to make judgments, assumptions and estimates that affect the amounts reported in the Consolidated Financial Statements and accompanying notes. Note 1 to the Consolidated Financial Statements in the Corporation’s Annual Report on Form 10-K for the year ended December 31, 2017 ("2017 10-K") describes the significant accounting policies and methods used in the preparation of the Consolidated Financial Statements. The Corporation’s critical accounting policies that are impacted by judgments, assumptions and estimates are described in Management’s Discussion and

21

Union Carbide Corporation and Subsidiaries

Analysis of Financial Condition and Results of Operations in the Corporation’s 2017 10-K. Since December 31, 2017, there have been no material changes in the Corporation’s accounting policies that are impacted by judgments, assumptions and estimates.

Asbestos-Related Matters

The Corporation is and has been involved in a large number of asbestos-related suits filed primarily in state courts during the past four decades. These suits principally allege personal injury resulting from exposure to asbestos-containing products and frequently seek both actual and punitive damages. The alleged claims primarily relate to products that UCC sold in the past, alleged exposure to asbestos-containing products located on UCC’s premises, and UCC’s responsibility for asbestos suits filed against a former UCC subsidiary, Amchem Products, Inc. ("Amchem"). In many cases, plaintiffs are unable to demonstrate that they have suffered any compensable loss as a result of such exposure, or that injuries incurred in fact resulted from exposure to UCC’s products.

The table below provides information regarding asbestos-related claims pending against the Corporation and Amchem based on criteria developed by UCC and its external consultants.

Asbestos-Related Claim Activity	2018		2017
Claims unresolved at Jan 1	15,427		16,141
Claims filed	3,537		3,644
Claims settled, dismissed or otherwise resolved	(5,230	)	(3,875	)
Claims unresolved at Jun 30	13,734		15,910
Claimants with claims against both UCC and Amchem	(4,928	)	(5,648	)
Individual claimants at Jun 30	8,806		10,262

Plaintiffs' lawyers often sue numerous defendants in individual lawsuits or on behalf of numerous claimants. As a result, the damages alleged are not expressly identified as to UCC, Amchem or any other particular defendant, even when specific damages are alleged with respect to a specific disease or injury. In fact, there are no personal injury cases in which only the Corporation and/or Amchem are the sole named defendants. For these reasons and based upon the Corporation's litigation and settlement experience, the Corporation does not consider the damages alleged against it and Amchem to be a meaningful factor in its determination of any potential asbestos-related liability.

For additional information see Asbestos-Related Matters in Note 8 to the Consolidated Financial Statements and Part II, Item 1. Legal Proceedings.

Debt Covenants and Default Provisions

The Corporation’s outstanding public debt has been issued under indentures which contain, among other provisions, covenants that the Corporation must comply with while the underlying notes are outstanding. Such covenants are typically based on the Corporation’s size and financial position and include, subject to the exceptions and qualifications contained in the indentures, obligations not to (i) allow liens on principal U.S. manufacturing facilities, (ii) enter into sale and lease-back transactions with respect to principal U.S. manufacturing facilities, or (iii) merge into or consolidate with any other entity or sell or convey all or substantially all of its assets. Failure of the Corporation to comply with any of these covenants could, after the passage of any applicable grace period, result in a default under the applicable indenture which would allow the note holders to accelerate the due date of the outstanding principal and accrued interest on the subject notes. Management believes the Corporation was in compliance with the covenants referred to above at June 30, 2018.

Dividends

On a quarterly basis, the Corporation's Board of Directors reviews and determines if there will be a dividend distribution to its parent company and sole shareholder, Dow. The Board takes into consideration the level of earnings and cash flows, among other factors, in determining the amount of the dividend distribution.

In the second quarter of 2018, the Corporation declared and paid a cash dividend of $135 million to Dow; dividends paid to Dow totaled $246 million for the first six months of 2018. In the second quarter of 2017, the Corporation declared and paid a cash dividend of $181 million to Dow; dividends paid to Dow totaled $350 million for the first six months of 2017. On August 1, 2018,the UCC Board of Directors approved a dividend to Dow of $177 million, payable on September 28, 2018.

22

Union Carbide Corporation and Subsidiaries

ITEM 3.  QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK

Omitted pursuant to General Instruction H of Form 10-Q.

ITEM 4. CONTROLS AND PROCEDURES

Evaluation of Disclosure Controls and Procedures

As of the end of the period covered by this Quarterly Report on Form 10-Q, the Corporation carried out an evaluation, under the supervision and with the participation of the Corporation's Disclosure Committee and the Corporation's management, including the Chief Executive Officer and the Chief Financial Officer, of the effectiveness of the design and operation of the Corporation's disclosure controls and procedures pursuant to paragraph (b) of Exchange Act Rules 13a-15 and 15d-15. Based upon that evaluation, the Chief Executive Officer and the Chief Financial Officer concluded that the Corporation's disclosure controls and procedures were effective.

Changes in Internal Control Over Financial Reporting  

There were no changes in the Corporation's internal control over financial reporting identified in connection with the evaluation required by paragraph (d) of Exchange Act Rules 13a-15 and 15d-15 that was conducted during the last fiscal quarter that have materially affected, or are reasonably likely to materially affect, the Corporation's internal control over financial reporting. 

23

Union Carbide Corporation and Subsidiaries

PART II – OTHER INFORMATION

ITEM 1.  LEGAL PROCEEDINGS

Litigation

No material developments in asbestos-related matters occurred in the second quarter of 2018. For a current status of asbestos-related matters, see Note 8 to the Consolidated Financial Statements.

Environmental Proceedings

On July 5, 2018, the Corporation received a draft consent decree from the U.S. Environmental Protection Agency ("EPA"), the Department of Justice ("DOJ") and Louisiana Department of Environmental Quality ("DEQ") relating to the operation of steam-assisted flares at the olefins manufacturing facility in Hahnville (St. Charles), Louisiana. Discussions between the EPA, DOJ and DEQ are ongoing.

ITEM 1A.  RISK FACTORS

There were no material changes in the Corporation's risk factors in the second quarter of 2018.

ITEM 4.  MINE SAFETY DISCLOSURES

Not applicable.

ITEM 6.  EXHIBITS

EXHIBIT NO.	DESCRIPTION
23 *	Ankura Consulting Group, LLC's Consent.
31.1 *	Certification Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.
31.2 *	Certification Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.
32.1 *	Certification Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.
32.2 *	Certification Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.
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.

* Filed herewith

24

Union Carbide Corporation and Subsidiaries

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.

UNION CARBIDE CORPORATION

Registrant

Date: August 3, 2018
	By:	/s/ RONALD C. EDMONDS
		Ronald C. Edmonds
		Controller and Vice President
		of Controllers and Tax
		The Dow Chemical Company
		Authorized Representative of
		Union Carbide Corporation
	By:	/s/ IGNACIO MOLINA
		Ignacio Molina
		Vice President, Treasurer and
		Chief Financial Officer

25

EX-23

EXHIBIT 23

Ankura Consulting Group, LLC's Consent

Union Carbide Corporation:

Ankura Consulting Group, LLC ("Ankura") hereby consents to the use of Ankura's name and the reference to Ankura's reports appearing in this Quarterly Report on Form 10-Q of Union Carbide Corporation for the quarter ended June 30, 2018.

/s/ B. THOMAS FLORENCE

B. Thomas Florence

Senior Managing Director

Ankura Consulting Group, LLC

August 3, 2018

26

EX-31.1

EXHIBIT 31.1

Union Carbide Corporation and Subsidiaries

Certification Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002

I, Richard A. Wells, certify that:

1. I have reviewed this quarterly report on Form 10-Q of Union Carbide 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 registrant's board of directors (or persons performing the equivalent function):

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 3, 2018

/s/ RICHARD A. WELLS

Richard A. Wells

President and Chief Executive Officer

27

EX-31.2

EXHIBIT 31.2

Union Carbide Corporation and Subsidiaries

Certification Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002

I, Ignacio Molina, certify that:

1. I have reviewed this quarterly report on Form 10-Q of Union Carbide 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 registrant's board of directors (or persons performing the equivalent function):

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 3, 2018

/s/ IGNACIO MOLINA

Ignacio Molina

Vice President, Treasurer and

Chief Financial Officer

28

EX-32.1

EXHIBIT 32.1

Union Carbide Corporation and Subsidiaries

Certification Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002

I, Richard A. Wells, President and Chief Executive Officer of Union Carbide Corporation (the "Corporation"), certify that:

1. the Quarterly Report on Form 10-Q of the Corporation for the quarter ended June 30, 2018 as filed with the Securities and Exchange Commission (the "Report") fully complies with the requirements of Section 13(a) or 15(d) 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 Corporation.

/s/ RICHARD A. WELLS

Richard A. Wells

President and Chief Executive Officer

Date: August 3, 2018

29

EX-32.2

EXHIBIT 32.2

Union Carbide Corporation and Subsidiaries

Certification Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002

I, Ignacio Molina, Vice President, Treasurer and Chief Financial Officer of Union Carbide Corporation (the "Corporation"), certify that:

1. the Quarterly Report on Form 10-Q of the Corporation for the quarter ended June 30, 2018 as filed with the Securities and Exchange Commission (the "Report") fully complies with the requirements of Section 13(a) or 15(d) 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 Corporation.

/s/ IGNACIO MOLINA

Ignacio Molina

Vice President, Treasurer and

Chief Financial Officer

Date: August 3, 2018

30

XML

Document and Entity Information	6 Months Ended
	Jun. 30, 2018 shares
Document and Entity Information
Entity Registrant Name	UNION CARBIDE CORP /NEW/
Entity Central Index Key	0000100790
Current Fiscal Year End Date	--12-31
Entity Filer Category	Non-accelerated Filer
Document Type	10-Q
Document Period End Date	Jun. 30, 2018
Document Fiscal Year Focus	2018
Document Fiscal Period Focus	Q2
Amendment Flag	false
Entity Common Stock, Shares Outstanding	935.51

XML

Consolidated Statements of Income - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Net trade sales	$ 34	$ 25	$ 66	$ 82
Net sales to related companies	1,327	1,272	2,613	2,538
Total Net Sales	1,361	1,297	2,679	2,620
Cost of sales	948	1,025	2,040	2,067
Research and development expenses	5	8	10	10
Selling, general and administrative expenses	2	1	4	3
Restructuring and asset related charges - net	1	2	2	2
Integration and separation costs	1	0	1	0
Sundry income (expense) - net	(8)	23	(16)	16
Interest expense and amortization of debt discount	6	7	13	14
Income before income taxes	390	277	593	540
Provision for income taxes	84	95	122	185
Net Income Attributable to Union Carbide Corporation	306	182	471	355
Depreciation	43	42	88	87
Capital Expenditures	$ 57	$ 48	$ 101	$ 98

XML

Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Net income attributable to Union Carbide Corporation	$ 306	$ 182	$ 471	$ 355
Other comprehensive income, net of tax
Cumulative translation adjustments	1	2	1	3
Pension and other postretirement benefit plans	17	12	33	24
Other comprehensive income	18	14	34	27
Comprehensive income attributable to Union Carbide Corporation	$ 324	$ 196	$ 505	$ 382

XML

Consolidated Balance Sheets - USD ($) $ in Millions	Jun. 30, 2018	Dec. 31, 2017
Current Assets
Cash and cash equivalents	$ 13	$ 13
Accounts receivable:
Trade (net of allowance for doubtful receivables 2018: $-; 2017: $-)	31	21
Related companies	990	972
Other	49	50
Income taxes receivable	293	281
Notes receivable from related companies	1,091	1,238
Inventories	282	278
Other current assets	27	35
Total current assets	2,776	2,888
Investments
Investments in related companies	639	639
Other investments	25	25
Noncurrent receivables	64	62
Noncurrent receivables from related companies	55	54
Total investments	783	780
Property
Property	7,402	7,309
Less accumulated depreciation	6,012	5,930
Net property	1,390	1,379
Other Assets
Intangible assets (net of accumulated amortization 2018: $85; 2017: $82)	28	25
Deferred income tax assets - noncurrent	485	511
Deferred charges and other assets	35	36
Total other assets	548	572
Total Assets	5,497	5,619
Current Liabilities
Notes payable - related companies	27	28
Notes Payable - Other	2	0
Long-term debt due within one year	1	1
Accounts payable:
Trade	249	270
Related companies	464	684
Other	22	22
Income taxes payable	22	24
Asbestos-related liabilities - current	131	132
Accrued and other current liabilities	175	174
Total current liabilities	1,093	1,335
Long-Term Debt	474	474
Other Noncurrent Liabilities
Pension and other postretirement benefits - noncurrent	983	1,054
Asbestos-related liabilities - noncurrent	1,179	1,237
Other noncurrent obligations	141	151
Total other noncurrent liabilities	2,303	2,442
Stockholder's Equity
Common stock (authorized: 1,000 shares of $0.01 par value each; issued: 935.51 shares)	0	0
Additional paid-in capital	138	138
Retained earnings	3,061	2,582
Accumulated other comprehensive loss	(1,572)	(1,352)
Union Carbide Corporation's stockholder's equity	1,627	1,368
Total Liabilities and Equity	$ 5,497	$ 5,619

XML

Consolidated Balance Sheets (Parentheticals) - USD ($) $ in Millions	Jun. 30, 2018	Dec. 31, 2017
Allowance for doubtful accounts	$ 0	$ 0
Accumulated Amortization	$ 85	$ 82
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	1,000	1,000
Common stock, shares issued	935.51	935.51

XML

Consolidated Statements of Cash Flows - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017
Operating Activities
Net income attributable to Union Carbide Corporation	$ 471	$ 355
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	101	98
Provision for deferred income tax	16	85
Net gain on sales of property and investments	0	26
Net gain on sale of ownership interest in nonconsolidated affiliate	0	4
Restructuring and asset related charges - net	2	2
Net periodic pension benefit cost	22	14
Pension contributions	(41)	(161)
Changes in assets and liabilities:
Accounts and notes receivable	(8)	7
Related company receivables	129	88
Inventories	(4)	0
Accounts payable	(18)	12
Related company payables	(221)	(32)
Asbestos-related payments	(59)	(68)
Other assets and liabilities	(44)	29
Cash provided by operating activities	346	399
Investing Activities
Capital expenditures	(101)	(98)
Change in noncurrent receivable from related company	(1)	2
Proceeds from sale of ownership interest in nonconsolidated affiliate	0	22
Proceeds from sales of property	0	18
Proceeds from sales of investments	0	8
Cash used for investing activities	(102)	(48)
Financing Activities
Dividends paid to parent	(246)	(350)
Changes in short-term notes payable	2	1
Cash used for financing activities	(244)	(349)
Summary
Increase in cash and cash equivalents	0	2
Cash and cash equivalents at beginning of year	13	11
Cash and cash equivalents at end of period	$ 13	$ 13

XML

Consolidated Statements of Equity - USD ($) $ in Millions	Total	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive (Loss) [Member]
Union Carbide Corporation' stockholder's equity, beginning balance at Dec. 31, 2016	$ 1,798	$ 0	$ 138	$ 2,980	$ (1,320)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income attributable to Union Carbide Corporation	355	0	0	355	0
Other comprehensive income	27	0	0	0	27
Dividends declared	(350)	0	0	(350)	0
Other	1	0	0	1	0
Union Carbide Corporation's stockholder's equity, ending balance at Jun. 30, 2017	1,831	0	138	2,986	(1,293)
Union Carbide Corporation' stockholder's equity, beginning balance at Dec. 31, 2017	1,368	0	138	2,582	(1,352)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income attributable to Union Carbide Corporation	471	0	0	471	0
Other comprehensive income	34	0	0	0	34
Dividends declared	(246)	0	0	(246)	0
Union Carbide Corporation's stockholder's equity, ending balance at Jun. 30, 2018	1,627	0	138	3,061	(1,572)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Adoption of accounting standard (Note 1)	$ 0	$ 0	$ 0	$ 254	$ (254)

XML

CONSOLIDATED FINANCIAL STATEMENTS

6 Months Ended

Jun. 30, 2018

Organization, Consolidation and Presentation of Financial Statements [Abstract]

CONSOLIDATED FINANCIAL STATEMENTS

CONSOLIDATED FINANCIAL STATEMENTS

Basis of Presentation

The unaudited interim consolidated financial statements of Union Carbide Corporation and its subsidiaries (the "Corporation" or "UCC") were prepared in accordance with accounting principles generally accepted in the United States of America ("U.S. GAAP") and reflect all adjustments (including normal recurring accruals) which, in the opinion of management, are considered necessary for the fair presentation of the results for the periods presented. These statements should be read in conjunction with the audited consolidated financial statements and notes thereto included in the Corporation’s Annual Report on Form 10-K for the year ended December 31, 2017.

The Corporation is a wholly owned subsidiary of The Dow Chemical Company ("Dow"). In accordance with the accounting guidance for earnings per share, the presentation of earnings per share is not required in financial statements of wholly owned subsidiaries.

The Corporation’s business activities comprise components of Dow’s global operations rather than stand-alone operations. Dow conducts its worldwide operations through principal product groups. Because there are no separable reportable business segments for UCC under the accounting guidance related to segment reporting and no detailed business information is provided to a chief operating decision maker regarding the Corporation’s stand-alone operations, the Corporation’s results are reported as a single operating segment.

Effective August 31, 2017, pursuant to the merger of equals transaction contemplated by the Agreement and Plan of Merger, dated as of December 11, 2015, as amended on March 31, 2017, Dow and E. I. du Pont de Nemours and Company ("DuPont") each merged with subsidiaries of DowDuPont Inc. ("DowDuPont") and, as a result, Dow and DuPont became subsidiaries of DowDuPont (the "Merger"). Following the Merger, Dow and DuPont intend to pursue, subject to approval by the board of directors of DowDuPont, the separation of the combined company's agriculture business, specialty products business and materials science business through one or more tax-efficient transactions.

Intercompany transactions and balances are eliminated in consolidation. Transactions with the Corporation’s parent company, Dow, and other subsidiaries of Dow and DowDuPont, have been reflected as related company transactions in the consolidated financial statements. See Note 12 for additional information.

Significant Accounting Policy Updates

In the first quarter of 2018, the Corporation adopted Accounting Standards Update ("ASU") 2014-09, "Revenue from Contracts with Customers (Topic 606)" and the associated ASUs (collectively, "Topic 606"). See Notes 2 and 3 for additional information. The Corporation's significant accounting policy for Revenue was updated as a result of the adoption of Topic 606:

Revenue

Substantially all of the Corporation's revenues are generated by sales to Dow. Revenue for product sales to related companies is recognized when the related company obtains control of the product, which occurs either at the time that production is complete or shipped free on board ("FOB") from UCC's manufacturing facility, in accordance with the sales agreement between the Corporation and Dow.

The Corporation recognizes revenue for product sales to trade customers when its customer obtains control of promised goods or services, in an amount that reflects the consideration which the Corporation expects to receive in exchange for those goods or services. To determine revenue recognition for the arrangements that the Corporation determines are within the scope of Topic 606, the Corporation performs the following five steps: (1) identify the contract(s) with a customer, (2) identify the performance obligations in the contract, (3) determine the transaction price, (4) allocate the transaction price to the performance obligations in the contract, and (5) recognize revenue when (or as) the entity satisfies a performance obligation.

In the second quarter of 2018, the Corporation adopted ASU 2018-02, "Income Statement - Reporting Comprehensive Income (Topic 220): Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income," which resulted in a $254 million increase to retained earnings due to the reclassification from accumulated other comprehensive loss for the effect of the federal corporate income tax rate change as a result of the Tax Cuts and Jobs Act of 2017 ("The Act") on the Corporation's pension plans. This reclassification is reflected in the "Adoption of accounting standard" line in the consolidated statements of equity. The Corporation's significant accounting policy for Income Taxes was updated as a result of the adoption of ASU 2018-02 to indicate the Corporation uses the portfolio approach for releasing income tax effects from accumulated other comprehensive loss. See Note 2 for additional information.

Changes in Financial Statement Presentation

Consolidated Statements of Income

In the third quarter of 2017, the Corporation changed the presentation on the face of the consolidated statements of income to conform with the presentation that was adopted for DowDuPont. As a result, "Interest income" has been reclassified to "Sundry income (expense) - net."

In the first quarter of 2018, the Corporation adopted ASU 2017-07, "Compensation - Retirement Benefits (Topic 715): Improving the Presentation of Net Periodic Pension Cost and Net Periodic Postretirement Benefit Cost," which required retrospective application for the reclassification of net periodic benefit costs, other than the service cost component, from "Cost of sales" to "Sundry income (expense) - net." See Note 2 for additional information.

The changes to the consolidated statements of income as a result of the Merger and the retrospective adoption of ASU 2017-07 are summarized below:

Summary of Changes to the Consolidated Statements of Income	Three Months Ended Jun 30, 2017				Six Months Ended Jun 30, 2017
In millions	As Filed		Updated		As Filed		Updated
Cost of sales	$	1,024	$	1,025	$	2,065	$	2,067
Sundry income (expense) - net	$	17	$	23	$	5	$	16
Interest income	$	5	$	—	$	9	$	—

Consolidated Statements of Cash Flows

In the third quarter of 2017, the Corporation changed the presentation to the consolidated statements of cash flows to conform with the presentation that was adopted for DowDuPont. "Net periodic pension benefit cost" is now separately reported and has been reclassified from "Other assets and liabilities." Prior periods have been updated to conform with the current year presentation and are summarized below:

Summary of Changes to the Consolidated Statements of Cash Flows	Six Months Ended Jun 30, 2017
In millions	As Filed		Updated
Operating Activities
Net periodic pension benefit cost	$	—	$	14
Other assets and liabilities	$	43	$	29

XML

RECENT ACCOUNTING GUIDANCE

6 Months Ended

Jun. 30, 2018

New Accounting Pronouncements and Changes in Accounting Principles [Abstract]

RECENT ACCOUNTING GUIDANCE

RECENT ACCOUNTING GUIDANCE

Recently Adopted Accounting Guidance

In the second quarter of 2018, the Corporation early adopted ASU 2018-02, "Income Statement - Reporting Comprehensive Income (Topic 220): Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income," which allows a reclassification from accumulated other comprehensive income to retained earnings for stranded tax effects resulting from The Act, which was enacted on December 22, 2017, and requires certain disclosures about stranded tax effects. An entity has the option of applying the new guidance at the beginning of the period of adoption or retrospectively to each period (or periods) in which the tax effects related to items remaining in accumulated other comprehensive income are recognized. The new standard is effective for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2018, and early adoption is permitted, including adoption in an interim period for reporting periods in which the financial statements have not yet been issued. The Corporation's adoption of the new standard was applied prospectively at the beginning of the second quarter of 2018, with a reclassification of the stranded tax effects as a result of The Act from accumulated other comprehensive loss to retained earnings. See Note 1 for additional information.

In the first quarter of 2018, the Corporation adopted ASU 2014-09, "Revenue from Contracts with Customers (Topic 606)," which is the new comprehensive revenue recognition standard that supersedes the revenue recognition requirements in Topic 605, "Revenue Recognition," and most industry specific guidance. The standard's core principle is that a company will recognize revenue when it transfers promised goods or services to a customer in an amount that reflects the consideration to which the company expects to be entitled in exchange for those goods or services. In 2015 and 2016, the Financial Accounting Standards Board ("FASB") issued additional ASUs related to Topic 606 that delayed the effective date of the guidance and clarified various aspects of the new revenue guidance, including principal versus agent considerations, identification of performance obligations, and accounting for licenses, and included other improvements and practical expedients. The new guidance was effective for annual and interim periods beginning after December 15, 2017. The Corporation elected to adopt the new guidance using the modified retrospective transition method for all contracts not completed as of the date of adoption, which requires the cumulative effect of applying the new revenue standard as an adjustment to the opening balance of retained earnings in the first period of adoption. As a result of adopting the new guidance, there were no adjustments required to retained earnings at the beginning of the first quarter of 2018 and there was no impact on the consolidated financial statements. The comparative periods have not been restated and continue to be accounted for under Topic 605. See Notes 1 and 3 for additional disclosures regarding the Corporation's contracts with customers as well as the impact of adopting Topic 606.

In the first quarter of 2018, the Corporation adopted ASU 2016-16, "Income Taxes (Topic 740): Intra-Entity Transfers of Assets Other Than Inventory," which requires an entity to recognize the income tax consequences of an intra-entity transfer of an asset other than inventory when the transfer occurs. The amendments were effective for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2017, and applied on a modified retrospective basis through a cumulative-effect adjustment directly to retained earnings at the beginning of the period of adoption. The adoption of this guidance did not have an impact on the consolidated financial statements.

In the first quarter of 2018, the Corporation adopted ASU 2017-07, "Compensation - Retirement Benefits (Topic 715): Improving the Presentation of Net Periodic Pension Cost and Net Periodic Postretirement Benefit Cost," which amends the requirements related to the income statement presentation of the components of net periodic benefit cost for employer sponsored defined benefit pension and other postretirement benefit plans. Under the new guidance, an entity must disaggregate and present the service cost component of net periodic benefit cost in the same income statement line item(s) as other employee compensation costs arising from services rendered during the period, and only the service cost component will be eligible for capitalization. Other components of net periodic benefit cost must be presented separately from the line item(s) that includes the service cost. The new standard was effective for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2017. Entities were required to use a retrospective transition method to adopt the requirement for separate income statement presentation of the service cost and other components, and a prospective transition method to adopt the requirement to limit the capitalization of benefit cost to the service component. In the first quarter of 2018, the Corporation used a retrospective transition method to reclassify net periodic benefit cost, other than the service component, from "Cost of sales" to "Sundry income (expense) - net" in the consolidated statements of income. See Note 1 for additional information.

Accounting Guidance Issued But Not Adopted at June 30, 2018

In February 2016, the FASB issued ASU 2016-02, "Leases (Topic 842)," which requires organizations that lease assets to recognize on the balance sheet the assets and liabilities for the rights and obligations created by those leases. The new guidance requires that a lessee recognize assets and liabilities for leases with lease terms of more than twelve months and recognition, presentation and measurement in the financial statements will depend on its classification as a finance or operating lease. In addition, the new guidance will require disclosures to help investors and other financial statement users better understand the amount, timing and uncertainty of cash flows arising from leases. Lessor accounting remains largely unchanged from current U.S. GAAP but does contain some targeted improvements to align with the new revenue recognition guidance issued in 2014 (ASU 2014-09). The new standard is effective for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2018, using a modified retrospective approach, and early adoption is permitted. The Corporation has a cross-functional team in place to evaluate and implement the new guidance. The team continues to review existing lease arrangements and has engaged a third party to assist with the collection of lease data. The impact of applying the practical expedients and accounting policy elections has been evaluated and the Corporation is in the process of documenting the related considerations and decisions. The Corporation is currently implementing a software solution, enhancing accounting systems and updating business processes and controls related to leases. Collectively, these activities are expected to facilitate the Corporation's ability to meet the new accounting and disclosure requirements upon adoption in the first quarter of 2019. The Corporation is working to quantify the impact and anticipates that the adoption of the new standard will result in a material increase in lease-related assets and liabilities in the consolidated balance sheets.

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REVENUE REVENUE FROM CONTRACT WITH CUSTOMERS

6 Months Ended

Jun. 30, 2018

Revenue from Contract with Customer [Abstract]

Revenue from Contract with Customer [Text Block]

NOTE 3 - REVENUE

Substantially all of the Corporation's revenues are generated by intercompany sales to Dow. Products are sold to and purchased from Dow at market-based prices in accordance with the terms of Dow’s intercompany pricing policies. Approximately 99 percent of the Corporation's sales for the three and six months ended June 30, 2018, related to sales of product (99 percent in the three and six months ended June 30, 2017); the remaining 1 percent related to the licensing of patents and technology. The Corporation sells its products to Dow to simplify the customer interface process.

Substantially all product sale contracts are short-term in nature and have original expected durations of one year or less. Revenue from product sales is recognized when Dow or the customer obtains control of the Corporation’s product, which occurs at a point in time, typically at the time production is complete or product is shipped FOB from UCC’s manufacturing facility for sales to Dow, or upon shipment for sales to trade customers. The Corporation’s payment terms are on average 40 to 60 days after invoicing. All shipping and handling activities that occur after control transfers to the customer are considered fulfillment activities. Certain long-term contracts include a series of distinct goods that are delivered continuously to the customer through a pipeline. For these types of product sales, the Corporation invoices the customer in an amount that directly corresponds with the value to the customer of the Corporation’s performance to date. As a result, revenue is recognized based on the amount billable to the customer in accordance with the right to invoice practical expedient.

The transaction price for product sales includes estimates for the most likely amount of consideration to which the Corporation will be entitled based on historical award experience and the Corporation’s best judgment at the time. Taxes collected and remitted to governmental authorities are excluded from the transaction price. For contracts with multiple performance obligations, the Corporation allocates the transaction price to each performance obligation on the basis of relative standalone selling price, which is based on the price charged to customers or estimated using the expected cost plus margin method.

Revenue related to the initial licensing of patents and technology is recognized when the performance obligation is satisfied. Revenue related to sales-based royalties to which the Corporation expects to be entitled is estimated based on historical sales.

The Corporation’s contract liabilities include payments received in advance of performance under long-term contracts for product sales and royalties, and are realized when the associated revenue is recognized under the contract with remaining contract terms that range up to 23 years. The Corporation will have rights to future consideration for revenue recognized when product is delivered to the customer. The balance of contract liabilities was $42 million at June 30, 2018 ($43 million at December 31, 2017) and was included in "Accrued and other current liabilities" and "Other noncurrent obligations" in the consolidated balance sheets.

The Corporation disaggregates its revenue from contracts with customers by type of customer (sales to related parties and sales to trade customers) as presented in the consolidated statements of income and believes this disaggregation best depicts the nature, amount, timing and uncertainty of its revenue and cash flows. Substantially all of the product sales are made to the parent entity, Dow, and there are no unique economic factors that affect revenue recognition and cash flows associated with these product sales.

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RESTRUCTURING AND ASSET RELATED CHARGES - NET

6 Months Ended

Jun. 30, 2018

Restructuring and Related Activities [Abstract]

Restructuring and Related Activities Disclosure [Text Block]

In September 2017, the Corporation approved restructuring actions that are aligned with DowDuPont’s synergy targets. As a result of these actions, the Corporation recorded a pretax restructuring charge for severance and related benefit costs of $8 million in the third quarter of 2017. In November 2017, the Corporation approved additional restructuring actions in connection with the restructuring program. A pretax restructuring charge for severance and related benefit costs of $2 million was recorded in the fourth quarter of 2017, as well as charges of $62 million for the write-off and write-down of manufacturing and facility related assets at multiple UCC sites, including a steam unit in Institute, West Virginia.

In addition to actions taken in 2017, the Corporation recorded pretax charges of $1 million in the second quarter of 2018 ($2 million for the first six months of 2018) for additional restructuring charges for severance and related benefit costs. At June 30, 2018, severance of $6 million had been paid, leaving a liability of $6 million. The impact of this charge was shown as “Restructuring and asset related charges - net” in the consolidated statements of income. These actions are expected to be substantially completed by September 30, 2019.

The Corporation expects to incur additional costs in the future related to restructuring activities, as UCC continually looks for ways to enhance the efficiency and cost effectiveness of its operations. The Corporation expects to incur additional employee-related costs, including involuntary termination benefits, related to its other optimization activities. These costs cannot be reasonably estimated at this time.

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INCOME TAXES

6 Months Ended

Jun. 30, 2018

Income Tax Disclosure [Abstract]

Income Tax Disclosure [Text Block]

INCOME TAXES

On December 22, 2017, The Act was enacted. The Act reduces the U.S. federal corporate income tax rate from 35 percent to 21 percent, requires companies to pay a one-time transition tax on earnings of certain foreign subsidiaries that were previously deferred, creates new provisions related to foreign sourced earnings, eliminates the domestic manufacturing deduction and moves towards a territorial system. At June 30, 2018, the Corporation had not completed its accounting for the tax effects of The Act; however, as described below, the Corporation made reasonable estimates of the effects on its existing deferred tax balances and the one-time transition tax. In accordance with Staff Accounting Bulletin 118, income tax effects of The Act may be refined upon obtaining, preparing, or analyzing additional information during the measurement period and such changes could be material. During the measurement period, provisional amounts may also be adjusted for the effects, if any, of interpretative guidance issued after December 31, 2017, by U.S. regulatory and standard-setting bodies.

• As a result of The Act, the Corporation remeasured its U.S. federal deferred tax assets and liabilities based on the income tax rates at which they are expected to reverse in the future, which is generally 21 percent. However, the Corporation is still analyzing certain aspects of The Act and refining its calculations. Adjustments in the first half of 2018 were insignificant. To date, the provisional amount recorded related to the remeasurement of the Corporation’s deferred tax balance was $250 million, recorded as a charge to “Provision for income taxes."

• The Act requires a mandatory deemed repatriation of post-1986 undistributed foreign earnings and profits (“E&P”), which results in a one-time transition tax. As a result, the provisional amount recorded for the transition tax liability for its foreign subsidiaries was insignificant at June 30, 2018. The Corporation has not yet completed its calculation of the total post-1986 foreign E&P for its foreign subsidiaries as E&P will not be finalized until the DowDuPont federal income tax return is filed.

• The Corporation recorded an indirect impact of The Act related to prepaid tax on intercompany sales of inventory. The amount related to the inventory was $2 million, recorded as a charge to "Provision for income taxes" in the first quarter of 2018.

• For tax years beginning after December 31, 2017, The Act introduces new provisions for U.S. taxation of certain global intangible low-taxed income ("GILTI"). The Corporation is evaluating the policy election on whether the additional liability will be recorded in the period in which it is incurred or recognized for the basis differences that would be expected to reverse in future years.

In the first quarter of 2018, a settlement was reached for a tax matter regarding fees paid to the Corporation by a foreign nonconsolidated affiliate. As a result, the Corporation recorded an increase of $40 million to "Income taxes receivable" and "Income taxes payable" in the consolidated balance sheets. There was no impact to the consolidated statements of income. In the second quarter of 2018, a payment of $40 million was made for the settlement of the tax matter.

The Corporation is included in Dow's consolidated federal income tax group and consolidated tax return. Current and deferred tax expenses are calculated for the Corporation as a stand-alone group and are allocated to the group from the consolidated totals, consistent with the Dow-UCC Tax Sharing Agreement. UCC is currently under examination in a number of tax jurisdictions, including the U.S. federal and various state jurisdictions. It is reasonably possible that these examinations may be resolved in the next twelve months. The impact on the Corporation’s results of operations is not expected to be material.

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INVENTORIES

6 Months Ended

Jun. 30, 2018

Inventory Disclosure [Abstract]

INVENTORIES

INVENTORIES

The following table provides a breakdown of inventories:

Inventories	Jun 30, 2018			Dec 31, 2017
In millions
Finished goods	$	227		$	222
Work in process	51			47
Raw materials	43			48
Supplies	78			73
Total	$	399		$	390
Adjustment of inventories to a LIFO basis	(117		)	(112		)
Total inventories	$	282		$	278

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INTANGIBLE ASSETS

6 Months Ended

Jun. 30, 2018

Intangible Assets, Net (Excluding Goodwill) [Abstract]

INTANGIBLE ASSETS DISCLOSURE

INTANGIBLE ASSETS

The following table provides information regarding the Corporation’s intangible assets:

Intangible Assets	Jun 30, 2018							Dec 31, 2017
In millions	Gross Carrying Amount		Accumulated Amortization			Net		Gross Carrying Amount		Accumulated Amortization			Net
Intangible assets with finite lives:
Licenses and developed technology	$	33	$	(33	)	$	—	$	33	$	(33	)	$	—
Software	80		(52		)	28		74		(49		)	25
Total intangible assets	$	113	$	(85	)	$	28	$	107	$	(82	)	$	25

Total estimated amortization expense for 2018 and the five succeeding fiscal years is as follows:

Estimated Amortization Expense
In millions
2018	$	7
2019	$	7
2020	$	7
2021	$	5
2022	$	3
2023	$	1

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COMMITMENTS AND CONTINGENT LIABILITIES

6 Months Ended

Jun. 30, 2018

Commitments and Contingencies Disclosure [Abstract]

COMMITMENTS AND CONTINGENCIES DISCLOSURE

COMMITMENTS AND CONTINGENT LIABILITIES

Environmental Matters

Accruals for environmental matters are recorded when it is probable that a liability has been incurred and the amount of the liability can be reasonably estimated, based on current law and existing technologies.

At June 30, 2018, the Corporation had accrued obligations of $105 million for probable environmental remediation and restoration costs, including $18 million for the remediation of Superfund sites. These obligations are included in "Accrued and other current liabilities" and "Other noncurrent obligations" in the consolidated balance sheets. This is management’s best estimate of the costs for remediation and restoration with respect to environmental matters for which the Corporation has accrued liabilities, although it is reasonably possible that the ultimate cost with respect to these particular matters could range up to approximately three times that amount. Consequently, it is reasonably possible that environmental remediation and restoration costs in excess of amounts accrued could have a material impact on the Corporation's results of operations, financial condition and cash flows. It is the opinion of the Corporation’s management that the possibility is remote that costs in excess of the range disclosed will have a material impact on the Corporation’s results of operations, financial condition and cash flows. Inherent uncertainties exist in these estimates primarily due to unknown environmental conditions, changing governmental regulations and legal standards regarding liability, and emerging remediation technologies for handling site remediation and restoration. At December 31, 2017, the Corporation had accrued obligations of $114 million for probable environmental remediation and restoration costs, including $19 million for the remediation of Superfund sites.

Litigation

The Corporation is involved in a number of legal proceedings and claims with both private and governmental parties. These cover a wide range of matters, including, but not limited to: product liability; trade regulation; governmental regulatory proceedings; health, safety and environmental matters; employment; patents; contracts; taxes; and commercial disputes.

Asbestos-Related Matters

A summary of asbestos-related matters can be found in Note 14 to the Consolidated Financial Statements included in the Corporation's Annual Report on Form 10-K for the year ended December 31, 2017.

Introduction

The Corporation is and has been involved in a large number of asbestos-related suits filed primarily in state courts during the past four decades. These suits principally allege personal injury resulting from exposure to asbestos-containing products and frequently seek both actual and punitive damages. The alleged claims primarily relate to products that UCC sold in the past, alleged exposure to asbestos-containing products located on UCC’s premises and UCC’s responsibility for asbestos suits filed against a former UCC subsidiary, Amchem Products, Inc. ("Amchem"). In many cases, plaintiffs are unable to demonstrate that they have suffered any compensable loss as a result of such exposure, or that injuries incurred in fact resulted from exposure to the Corporation’s products.

The Corporation expects more asbestos-related suits to be filed against UCC and Amchem in the future, and will aggressively defend or reasonably resolve, as appropriate, both pending and future claims.

Estimating the Asbestos-Related Liability

Since 2003, the Corporation has engaged Ankura Consulting Group, LLC ("Ankura"), a third party actuarial specialist, to review the Corporation's historical asbestos-related claim and resolution activity in order to assist UCC management in estimating the Corporation's asbestos-related liability. Each year, Ankura has reviewed the claim and resolution activity to determine the appropriateness of updating the most recent Ankura study.

Based on the December 2017 Ankura review and the Corporation's own review of the data, the Corporation's total asbestos-related liability through the terminal year of 2049, including asbestos-related defense and processing costs, was $1,369 million at December 31, 2017, and was included in “Asbestos-related liabilities - current” and “Asbestos-related liabilities - noncurrent” in the consolidated balance sheets.

Each quarter, the Corporation reviews claims filed, settled and dismissed, as well as average settlement and resolution costs by disease category. The Corporation also considers additional quantitative and qualitative factors such as the nature of pending claims, trial experience of the Corporation and other asbestos defendants, current spending for defense and processing costs, significant appellate rulings and legislative developments, trends in the tort system, and their respective effects on expected future resolution costs. UCC management considers all these factors in conjunction with the most recent Ankura study and determines whether a change in the estimate is warranted. Based on the Corporation's review of 2018 activity, it was determined that no adjustment to the accrual was required at June 30, 2018.

The Corporation’s asbestos-related liability for pending and future claims and defense and processing costs was $1,310 million at June 30, 2018, and approximately 16 percent of the recorded liability related to pending claims and approximately 84 percent related to future claims.

Summary

The Corporation's management believes the amounts recorded for the asbestos-related liability (including defense and processing costs) reflect reasonable and probable estimates of the liability based on current, known facts. However, future events, such as the number of new claims to be filed and/or received each year and the average cost of defending and disposing of each such claim, as well as the numerous uncertainties surrounding asbestos litigation in the United States, could cause the actual costs for the Corporation to be higher or lower than those projected or those recorded. Any such event could result in an increase or decrease in the recorded liability.

Because of the uncertainties described above, the Corporation cannot estimate the full range of the cost of resolving pending and future asbestos-related claims facing UCC and Amchem. As a result, it is reasonably possible that an additional cost of disposing of asbestos-related claims, including future defense and processing costs, could have a material impact on the Corporation's results of operations and cash flows for a particular period and on the consolidated financial position.

Other Litigation

While it is not possible at this time to determine with certainty the ultimate outcome of any of the legal proceedings and claims referred to in this filing, management believes that the possibility is remote that the aggregate of all such other claims and lawsuits will have a material adverse impact on the results of operations, cash flows and financial position of the Corporation.

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ACCUMULATED OTHER COMPREHENSIVE LOSS

6 Months Ended

Jun. 30, 2018

Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]

ACCUMULATED OTHER COMPREHENSIVE LOSS

ACCUMULATED OTHER COMPREHENSIVE LOSS

The following table summarizes the changes and after-tax balances of each component of accumulated other comprehensive loss for the six months ended June 30, 2018 and 2017:

Accumulated Other Comprehensive Loss	Cumulative Translation Adj			Pension and Other Postretire Benefits			Total Accum Other Comp Loss
In millions
Balance at Jan 1, 2017	$	(62	)	$	(1,258	)	$	(1,320	)
Amounts reclassified from accumulated other comprehensive loss	3			24			27
Balance at Jun 30, 2017	$	(59	)	$	(1,234	)	$	(1,293	)
Balance at Jan 1, 2018	$	(59	)	$	(1,293	)	$	(1,352	)
Amounts reclassified from accumulated other comprehensive loss	1			33			34
Reclassification of stranded tax effects 1	—			(254		)	(254		)
Balance at Jun 30, 2018	$	(58	)	$	(1,514	)	$	(1,572	)

1. Amounts reclassified to retained earnings as a result of the adoption of ASU 2018-02. See Notes 1 and 2 for additional information.

The tax effects on the net activity related to each component of other comprehensive loss for the three and six months ended June 30, 2018 and 2017 were as follows:

Tax Benefit	Three Months Ended				Six Months Ended
In millions	Jun 30, 2018		Jun 30, 2017		Jun 30, 2018		Jun 30, 2017
Pension and other postretirement benefit plans	$	4	$	8	$	10	$	16

A summary of the reclassifications out of accumulated other comprehensive loss for the three and six months ended June 30, 2018 and 2017 is provided as follows:

Reclassifications Out of Accumulated Other Comprehensive Loss	Three Months Ended						Six Months Ended						Consolidated Statements of Income Classification
	Jun 30, 2018			Jun 30, 2017			Jun 30, 2018			Jun 30, 2017
In millions
Cumulative translation adjustments	$	1		$	3		$	1		$	3		See (1) below
Pension and other postretirement benefit plans	$	21		$	20		$	43		$	40		See (2) below
Tax benefit	(4		)	(8		)	(10		)	(16		)	See (3) below
After tax	$	17		$	12		$	33		$	24
Total reclassifications for the period, after tax	$	18		$	15		$	34		$	27

1. "Sundry income (expense) - net."

2. Included in the computation of net periodic benefit cost of the Corporation's pension and other postretirement plans. See Note 10 for additional information.

3. "Provision for income taxes."

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PENSION PLANS AND OTHER POSTRETIREMENT BENEFITS

6 Months Ended

Jun. 30, 2018

Retirement Benefits [Abstract]

PENSION PLANS AND OTHER POSTRETIREMENT BENEFITS

PENSION PLANS AND OTHER POSTRETIREMENT BENEFITS

The following table provides the components of the Corporation's net periodic benefit cost for all significant plans:

Net Periodic Benefit Cost (Credit) for All Significant Plans	Three Months Ended						Six Months Ended
In millions	Jun 30, 2018			Jun 30, 2017			Jun 30, 2018			Jun 30, 2017
Defined Benefit Pension Plans:
Service cost	$	10		$	9		$	20		$	18
Interest cost	32			32			64			64
Expected return on plan assets	(54		)	(55		)	(109		)	(110		)
Amortization of net loss	23			21			47			42
Net periodic benefit cost	$	11		$	7		$	22		$	14
Other Postretirement Benefits:
Interest cost	$	1		$	2		$	3		$	4
Amortization of net gain	(2		)	(1		)	(4		)	(2		)
Net periodic benefit cost (credit)	$	(1	)	$	1		$	(1	)	$	2

On January 1, 2018, the Corporation adopted ASU 2017-07, which impacted the presentation of the components of net periodic benefit cost in the consolidated statements of income. Net periodic benefit cost, other than the service cost component, is retrospectively included in "Sundry income (expense) - net" in the consolidated statements of income. See Notes 1 and 2 for additional information.

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FAIR VALUE MEASUREMENTS

6 Months Ended

Jun. 30, 2018

Financial Instruments [Abstract]

Financial Instruments Disclosure [Text Block]

The Corporation's financial instruments are classified as Level 2 measurements. For assets and liabilities classified as Level 2 measurements, where the security is frequently traded in less active markets, fair value is based on the closing price at the end of the period; where the security is less frequently traded, fair value is based on the price a dealer would pay for the security or similar securities, adjusted for any terms specific to that asset or liability, or by using observable market data points of similar, more liquid securities to imply the price. Market inputs are obtained from well-established and recognized vendors of market data and subjected to tolerance/quality checks.

The following table summarizes the fair value of the Corporation's financial instruments at June 30, 2018 and December 31, 2017:

Fair Value of Financial Instruments	Jun 30, 2018											Dec 31, 2017
In millions	Cost			Gain		Loss			Fair Value			Cost			Gain		Loss			Fair Value
Cash equivalents 1	$	9		$	—	$	—		$	9		$	9		$	—	$	—		$	9
Long-term debt including debt due within one year	$	(475	)	$	—	$	(94	)	$	(569	)	$	(475	)	$	—	$	(129	)	$	(604	)

1. Money market fund is included in "Cash and cash equivalents" in the consolidated balance sheets and held at amortized cost, which approximates fair value.

Cost approximates fair value for all other financial instruments.

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RELATED PARTY TRANSACTIONS

6 Months Ended

Jun. 30, 2018

Related Party Transactions [Abstract]

RELATED PARTY TRANSACTIONS DISCLOSURE

RELATED PARTY TRANSACTIONS

The Corporation sells its products to Dow to simplify the customer interface process. Products are sold to and purchased from Dow at market-based prices in accordance with the terms of Dow’s intercompany pricing policies. After each quarter, the Corporation and Dow analyze the pricing used for the sales in that quarter and reach agreement on any necessary adjustments, at which point the prices are final. The Corporation also procures certain commodities and raw materials through a Dow subsidiary and pays a commission to that Dow subsidiary based on the volume and type of commodities and raw materials purchased. The commission expense is included in "Sundry income (expense) - net" in the consolidated statements of income. Purchases from that Dow subsidiary were $379 million in the second quarter of 2018 ($406 million in the second quarter of 2017) and $812 million during the first six months of 2018 ($836 million during the first six months of 2017).

The Corporation has a master services agreement with Dow whereby Dow provides services including, but not limited to, accounting, legal, treasury (investments, cash management, risk management, insurance), procurement, human resources, environmental, health and safety and business management for UCC. Under the master services agreement with Dow, general administrative and overhead type services that Dow routinely allocates to various businesses are charged to UCC. The master services agreement cost allocation basis is headcount and includes a 10 percent service fee. This agreement resulted in expense of $7 million in the second quarter of 2018 ($8 million in the second quarter of 2017) and $14 million for the first six months of 2018 ($16 million for the first six months of 2017) for general administrative and overhead type services and the 10 percent service fee, included in "Sundry income (expense) - net" in the consolidated statements of income. The remaining activity-based costs were $22 million in the second quarter of 2018 ($23 million in the second quarter of 2017) and $44 million in the first six months of 2018 ($40 million in the first six months of 2017), and were included in "Cost of sales" in the consolidated statements of income.

Management believes the method used for determining expenses charged by Dow is reasonable. Dow provides these services by leveraging its centralized functional service centers to provide services at a cost that management believes provides an advantage to the Corporation.

The monitoring and execution of risk management policies related to interest rate and foreign currency risks, which are based on Dow’s risk management philosophy, are provided as a service to UCC.

As part of Dow’s cash management process, UCC is a party to revolving loans with Dow that have interest rates based on LIBOR (London Interbank Offered Rate) with varying maturities. At June 30, 2018, the Corporation had a note receivable of $1.1 billion ($1.2 billion at December 31, 2017) from Dow under a revolving loan agreement. The Corporation may draw from this note receivable in support of its daily working capital requirements and, as such, the net effect of cash inflows and outflows under this revolving loan agreement is presented in the consolidated statements of cash flows as an operating activity.

The Corporation also has a separate revolving credit agreement with Dow that allows the Corporation to borrow or obtain credit enhancements up to an aggregate of $1 billion that matures December 30, 2018. Dow may demand repayment with a 30-day written notice to the Corporation, subject to certain restrictions. A related collateral agreement provides for the replacement of certain existing pledged assets, primarily equity interests in various subsidiaries, with cash collateral. At June 30, 2018, $948 million was available under the revolving credit agreement ($949 million at December 31, 2017). The cash collateral is reported as “Noncurrent receivables from related companies” in the consolidated balance sheets.

On a quarterly basis, the Corporation's Board of Directors reviews and determines if there will be a dividend distribution to its parent company and sole shareholder, Dow. The Board takes into consideration the level of earnings and cash flows, among other factors, in determining the amount of the dividend distribution. In the second quarter of 2018, the Corporation declared and paid a cash dividend of $135 million to Dow; dividends to Dow totaled $246 million in the first six months of 2018. In the second quarter of 2017, the Corporation declared and paid a cash dividend of $181 million to Dow; dividends to Dow totaled $350 million for the first six months of 2017.

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CONSOLIDATED FINANCIAL STATEMENTS SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Policies)

6 Months Ended

Jun. 30, 2018

Accounting Policies [Abstract]

Revenue Recognition, Sales of Goods [Policy Text Block]

Significant Accounting Policy Updates

In the first quarter of 2018, the Corporation adopted Accounting Standards Update ("ASU") 2014-09, "Revenue from Contracts with Customers (Topic 606)" and the associated ASUs (collectively, "Topic 606"). See Notes 2 and 3 for additional information. The Corporation's significant accounting policy for Revenue was updated as a result of the adoption of Topic 606:

Revenue

Substantially all of the Corporation's revenues are generated by sales to Dow. Revenue for product sales to related companies is recognized when the related company obtains control of the product, which occurs either at the time that production is complete or shipped free on board ("FOB") from UCC's manufacturing facility, in accordance with the sales agreement between the Corporation and Dow.

The Corporation recognizes revenue for product sales to trade customers when its customer obtains control of promised goods or services, in an amount that reflects the consideration which the Corporation expects to receive in exchange for those goods or services. To determine revenue recognition for the arrangements that the Corporation determines are within the scope of Topic 606, the Corporation performs the following five steps: (1) identify the contract(s) with a customer, (2) identify the performance obligations in the contract, (3) determine the transaction price, (4) allocate the transaction price to the performance obligations in the contract, and (5) recognize revenue when (or as) the entity satisfies a performance obligation.

Income Tax, Policy [Policy Text Block]

In the second quarter of 2018, the Corporation adopted ASU 2018-02, "Income Statement - Reporting Comprehensive Income (Topic 220): Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income," which resulted in a $254 million increase to retained earnings due to the reclassification from accumulated other comprehensive loss for the effect of the federal corporate income tax rate change as a result of the Tax Cuts and Jobs Act of 2017 ("The Act") on the Corporation's pension plans. This reclassification is reflected in the "Adoption of accounting standard" line in the consolidated statements of equity. The Corporation's significant accounting policy for Income Taxes was updated as a result of the adoption of ASU 2018-02 to indicate the Corporation uses the portfolio approach for releasing income tax effects from accumulated other comprehensive loss. See Note 2 for additional information.

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CONSOLIDATED FINANCIAL STATEMENTS Summary of Changes in Financial Presentation (Tables)

6 Months Ended

Jun. 30, 2018

Changes in Financial Statement Presentation [Abstract]

Schedule of New Accounting Pronouncements and Changes in Accounting Principles [Table Text Block]

Summary of Changes to the Consolidated Statements of Income	Three Months Ended Jun 30, 2017				Six Months Ended Jun 30, 2017
In millions	As Filed		Updated		As Filed		Updated
Cost of sales	$	1,024	$	1,025	$	2,065	$	2,067
Sundry income (expense) - net	$	17	$	23	$	5	$	16
Interest income	$	5	$	—	$	9	$	—

Consolidated Statements of Cash Flows

In the third quarter of 2017, the Corporation changed the presentation to the consolidated statements of cash flows to conform with the presentation that was adopted for DowDuPont. "Net periodic pension benefit cost" is now separately reported and has been reclassified from "Other assets and liabilities." Prior periods have been updated to conform with the current year presentation and are summarized below:

Summary of Changes to the Consolidated Statements of Cash Flows	Six Months Ended Jun 30, 2017
In millions	As Filed		Updated
Operating Activities
Net periodic pension benefit cost	$	—	$	14
Other assets and liabilities	$	43	$	29

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INVENTORIES (Tables)

6 Months Ended

Jun. 30, 2018

Inventory Disclosure [Abstract]

Schedule of Inventory, Current [Table Text Block]

The following table provides a breakdown of inventories:

Inventories	Jun 30, 2018			Dec 31, 2017
In millions
Finished goods	$	227		$	222
Work in process	51			47
Raw materials	43			48
Supplies	78			73
Total	$	399		$	390
Adjustment of inventories to a LIFO basis	(117		)	(112		)
Total inventories	$	282		$	278

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INTANGIBLE ASSETS (Tables)

6 Months Ended

Jun. 30, 2018

Intangible Assets, Net (Excluding Goodwill) [Abstract]

Intangible Assets

The following table provides information regarding the Corporation’s intangible assets:

Intangible Assets	Jun 30, 2018							Dec 31, 2017
In millions	Gross Carrying Amount		Accumulated Amortization			Net		Gross Carrying Amount		Accumulated Amortization			Net
Intangible assets with finite lives:
Licenses and developed technology	$	33	$	(33	)	$	—	$	33	$	(33	)	$	—
Software	80		(52		)	28		74		(49		)	25
Total intangible assets	$	113	$	(85	)	$	28	$	107	$	(82	)	$	25

Schedule of Expected Amortization Expense [Table Text Block]

Total estimated amortization expense for 2018 and the five succeeding fiscal years is as follows:

Estimated Amortization Expense
In millions
2018	$	7
2019	$	7
2020	$	7
2021	$	5
2022	$	3
2023	$	1

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ACCUMULATED OTHER COMPREHENSIVE LOSS (Tables)

6 Months Ended

Jun. 30, 2018

Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]

Schedule of Components of Other Comprehensive Income (Loss)

Accumulated Other Comprehensive Loss	Cumulative Translation Adj			Pension and Other Postretire Benefits			Total Accum Other Comp Loss
In millions
Balance at Jan 1, 2017	$	(62	)	$	(1,258	)	$	(1,320	)
Amounts reclassified from accumulated other comprehensive loss	3			24			27
Balance at Jun 30, 2017	$	(59	)	$	(1,234	)	$	(1,293	)
Balance at Jan 1, 2018	$	(59	)	$	(1,293	)	$	(1,352	)
Amounts reclassified from accumulated other comprehensive loss	1			33			34
Reclassification of stranded tax effects 1	—			(254		)	(254		)
Balance at Jun 30, 2018	$	(58	)	$	(1,514	)	$	(1,572	)

1. Amounts reclassified to retained earnings as a result of the adoption of ASU 2018-02. See Notes 1 and 2 for additional information.

The tax effects on the net activity related to each component of other comprehensive loss for the three and six months ended June 30, 2018 and 2017 were as follows:

Tax Benefit	Three Months Ended				Six Months Ended
In millions	Jun 30, 2018		Jun 30, 2017		Jun 30, 2018		Jun 30, 2017
Pension and other postretirement benefit plans	$	4	$	8	$	10	$	16

Schedule of Reclassifications Out of Accumulated Other Comprehensive Income

Reclassifications Out of Accumulated Other Comprehensive Loss	Three Months Ended						Six Months Ended						Consolidated Statements of Income Classification
	Jun 30, 2018			Jun 30, 2017			Jun 30, 2018			Jun 30, 2017
In millions
Cumulative translation adjustments	$	1		$	3		$	1		$	3		See (1) below
Pension and other postretirement benefit plans	$	21		$	20		$	43		$	40		See (2) below
Tax benefit	(4		)	(8		)	(10		)	(16		)	See (3) below
After tax	$	17		$	12		$	33		$	24
Total reclassifications for the period, after tax	$	18		$	15		$	34		$	27

1. "Sundry income (expense) - net."

2. Included in the computation of net periodic benefit cost of the Corporation's pension and other postretirement plans. See Note 10 for additional information.

3. "Provision for income taxes."

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PENSION PLANS AND OTHER POSTRETIREMENT BENEFITS (Tables)

6 Months Ended

Jun. 30, 2018

Retirement Benefits [Abstract]

Net Periodic Benefit Cost for All Significant Plans

Net Periodic Benefit Cost (Credit) for All Significant Plans	Three Months Ended						Six Months Ended
In millions	Jun 30, 2018			Jun 30, 2017			Jun 30, 2018			Jun 30, 2017
Defined Benefit Pension Plans:
Service cost	$	10		$	9		$	20		$	18
Interest cost	32			32			64			64
Expected return on plan assets	(54		)	(55		)	(109		)	(110		)
Amortization of net loss	23			21			47			42
Net periodic benefit cost	$	11		$	7		$	22		$	14
Other Postretirement Benefits:
Interest cost	$	1		$	2		$	3		$	4
Amortization of net gain	(2		)	(1		)	(4		)	(2		)
Net periodic benefit cost (credit)	$	(1	)	$	1		$	(1	)	$	2

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FAIR VALUE MEASUREMENTS FAIR VALUE MEASUREMENTS (Tables)

6 Months Ended

Jun. 30, 2018

Financial Instruments [Abstract]

Fair Value, by Balance Sheet Grouping [Table Text Block]

Fair Value of Financial Instruments	Jun 30, 2018											Dec 31, 2017
In millions	Cost			Gain		Loss			Fair Value			Cost			Gain		Loss			Fair Value
Cash equivalents 1	$	9		$	—	$	—		$	9		$	9		$	—	$	—		$	9
Long-term debt including debt due within one year	$	(475	)	$	—	$	(94	)	$	(569	)	$	(475	)	$	—	$	(129	)	$	(604	)

1. Money market fund is included in "Cash and cash equivalents" in the consolidated balance sheets and held at amortized cost, which approximates fair value.

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CONSOLIDATED FINANCIAL STATEMENTS Summary of Changes in Financial Statement Presentation (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Tax Cuts and Jobs Act, Reclassification from AOCI to Retained Earnings, Tax Effect	$ (254)
Cost of sales	948	$ 1,025	$ 2,040	$ 2,067
Sundry income (expense) - net	$ (8)	23	(16)	16
Investment Income, Interest		0		0
Net periodic pension benefit cost			22	14
Increase (Decrease) in Other Operating Assets and Liabilities, Net			$ 44	(29)
Scenario, Previously Reported [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Cost of sales		1,024		2,065
Sundry income (expense) - net		17		5
Investment Income, Interest		$ 5		9
Net periodic pension benefit cost				0
Increase (Decrease) in Other Operating Assets and Liabilities, Net				$ (43)

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REVENUE Revenue from Contract with Customer (Details) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2018	Dec. 31, 2017	Jun. 30, 2017
Revenue from External Customer [Line Items]
Contract with Customer, Liability, Noncurrent	$ 42	$ 43
Revenue, Performance Obligation, Description of Timing	23
Product [Member]
Revenue from External Customer [Line Items]
Revenue, Percentage from Products and Services Transferred to Customers	99.00%		99.00%
Licensing of Technology [Member]
Revenue from External Customer [Line Items]
Revenue, Percentage from Products and Services Transferred to Customers	1.00%		1.00%

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Restructuring and Asset Related Charges - Net (Details) - USD ($) $ in Millions	3 Months Ended				6 Months Ended
	Jun. 30, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Restructuring Cost and Reserve [Line Items]
Restructuring and asset related charges - net	$ 1			$ 2	$ 2	$ 2
2017 Restructuring [Member] | Employee Severance [Member]
Restructuring Cost and Reserve [Line Items]
Payments for Restructuring					(6)
Restructuring Reserve	6				6
Restructuring and asset related charges - net	$ 1	$ 2	$ 8		$ 2
2017 Restructuring [Member] | Impairment of Long-Lived Assets and Other Assets [Member]
Restructuring Cost and Reserve [Line Items]
Asset Impairment Charges		$ 62

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INCOME TAXES (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Mar. 31, 2018	Jun. 30, 2018
Income Tax Contingency [Line Items]
Tax Cuts and Jobs Act of 2017, Indirect Impact on Inventory, Provisional Income Tax Expense		$ 2
Tax Cuts and Jobs Act of 2017, Incomplete Accounting, Change in Tax Rate, Provisional Income Tax Expense(Benefit)			$ 250
Increase (Decrease) in Income Taxes Receivable		40
Foreign Tax Authority [Member]
Income Tax Contingency [Line Items]
Increase (Decrease) in Income Taxes Payable	$ (40)	$ 40

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INVENTORIES (Schedule of Inventories) (Details) - USD ($) $ in Millions	Jun. 30, 2018	Dec. 31, 2017
Inventory Disclosure [Abstract]
Finished goods	$ 227	$ 222
Work in process	51	47
Raw materials	43	48
Supplies	78	73
Total	399	390
Adjustment of inventories to a LIFO basis	(117)	(112)
Total inventories	$ 282	$ 278

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INTANGIBLE ASSETS (Schedule of Amortization Expense of Intangible Assets) (Table and Narrative) (Details) - USD ($) $ in Millions	Jun. 30, 2018	Dec. 31, 2017
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross	$ 113	$ 107
Finite-Lived Intangible Assets, Accumulated Amortization	(85)	(82)
Finite-Lived Intangible Assets, Net	28	25
Licenses and developed technology [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross	33	33
Finite-Lived Intangible Assets, Accumulated Amortization	(33)	(33)
Finite-Lived Intangible Assets, Net	0	0
Software [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross	80	74
Finite-Lived Intangible Assets, Accumulated Amortization	(52)	(49)
Finite-Lived Intangible Assets, Net	$ 28	$ 25

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INTANGIBLE ASSETS (Schedule of Future Amortization Expense of Intangible Assets) (Details) $ in Millions	Jun. 30, 2018 USD ($)
Goodwill and Intangible Assets Disclosure [Abstract]
Estimated Amortization Expense, 2018	$ 7
Estimated Amortization Expense, 2019	7
Estimated Amortization Expense, 2020	7
Estimated Amortization Expense, 2021	5
Estimated Amortization Expense, 2022	3
Estimated Amortization Expense, 2023	$ 1

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COMMITMENTS AND CONTINGENT LIABILITIES (Environmental Matters) (Narrative) (Details) - USD ($) $ in Millions	Jun. 30, 2018	Dec. 31, 2017
Site Contingency [Line Items]
Accrual for Environmental Loss Contingencies	$ 105	$ 114
Super Fund Sites [Member]
Site Contingency [Line Items]
Accrual for Environmental Loss Contingencies	$ 18	$ 19

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COMMITMENTS AND CONTINGENT LIABILITIES (Asbestos-Related Matters of Union Carbide Corporation) (Table and Narrative) (Details) - USD ($) $ in Millions	Jun. 30, 2018	Dec. 31, 2017
Loss Contingencies [Line Items]
Liability for Asbestos Claims and Defense Costs Gross	$ 1,310	$ 1,369
Percentage of recorded asbestos liability related to pending claims	16.00%
Percentage of recorded asbestos liability related to future claims	84.00%

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ACCUMULATED OTHER COMPREHENSIVE LOSS (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017	Dec. 31, 2017	Dec. 31, 2016
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax			$ 34	$ 27
Accumulated Other Comprehensive Income (Loss) [Line Items]
Tax Cuts and Jobs Act, Reclassification from AOCI to Retained Earnings, Tax Effect	$ (254)
Union Carbide Corporation's stockholder's equity	1,627	$ 1,831	1,627	1,831	$ 1,368	$ 1,798
AOCI Attributable to Parent [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Union Carbide Corporation's stockholder's equity	(1,572)	(1,293)	(1,572)	(1,293)	(1,352)	(1,320)
Cumulative translation adjustments
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax			1	3
Accumulated Other Comprehensive Income (Loss) [Line Items]
Tax Cuts and Jobs Act, Reclassification from AOCI to Retained Earnings, Tax Effect	0
Union Carbide Corporation's stockholder's equity	(58)	(59)	(58)	(59)	(59)	(62)
Pension and other postretirement benefits
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax			33	24
Accumulated Other Comprehensive Income (Loss) [Line Items]
Tax Cuts and Jobs Act, Reclassification from AOCI to Retained Earnings, Tax Effect	(254)
Union Carbide Corporation's stockholder's equity	(1,514)	(1,234)	(1,514)	(1,234)	$ (1,293)	$ (1,258)
Other Comprehensive Income (Loss), Tax	4	8	10	16
Reclassification out of Accumulated Other Comprehensive Income [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax	18	15	34	27
Reclassification out of Accumulated Other Comprehensive Income [Member] | Cumulative translation adjustments
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Reclassification from Accumulated Other Comprehensive Income, Current Period, before Tax	1	3	1	3
Reclassification out of Accumulated Other Comprehensive Income [Member] | Pension and other postretirement benefits
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Reclassification from Accumulated Other Comprehensive Income, Current Period, before Tax	21	20	43	40
Reclassification from AOCI, Current Period, Tax	(4)	(8)	(10)	(16)
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax	$ 17	$ 12	$ 33	$ 24

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PENSION PLANS AND OTHER POSTRETIREMENT BENEFITS (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Defined Benefit Pension Plans [Member]
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) [Abstract]
Service cost	$ 10	$ 9	$ 20	$ 18
Interest cost	32	32	64	64
Expected return on plan assets	(54)	(55)	(109)	(110)
Amortization of net (gain) loss	23	21	47	42
Net periodic benefit cost	11	7	22	14
Other Postretirement Benefits [Member]
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) [Abstract]
Interest cost	1	2	3	4
Amortization of net (gain) loss	(2)	(1)	(4)	(2)
Net periodic benefit cost	$ (1)	$ 1	$ (1)	$ 2

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FAIR VALUE MEASUREMENTS FAIR VALUE MEASUREMENTS (Fair Value of Financial Instruments) (Details) - USD ($) $ in Millions	Jun. 30, 2018	Dec. 31, 2017
Schedule of Available-for-sale Securities [Line Items]
Long-term Debt	$ (475)	$ (475)
Long-term Debt, Fair Value	(569)	(604)
Long-term Debt [Member]
Schedule of Available-for-sale Securities [Line Items]
Financial Instruments Gross Unrealized Gains	0	0
Financial Instruments Gross Unrealized Loss	(94)	(129)
Money Market Funds [Member]
Schedule of Available-for-sale Securities [Line Items]
Cash Equivalents, at Carrying Value	9	9
Financial Instruments Gross Unrealized Gains	0	0
Financial Instruments Gross Unrealized Loss	0	0
Cash Equivalents, Fair Value	$ 9	$ 9

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RELATED PARTY TRANSACTIONS (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017	Dec. 31, 2017
Related Party Transaction [Line Items]
Payments of Dividends			$ 246	$ 350
The Dow Chemical Company [Member]
Related Party Transaction [Line Items]
Related Party Transaction, Expenses from Transactions with Related Party	$ 379	$ 406	$ 812	836
Service Fee with Parent			10.00%
Notes Receivable, Related Parties	1,100		$ 1,100		$ 1,200
Line of Credit Facility, Maximum Borrowing Capacity	1,000		1,000
Line of Credit Facility, Remaining Borrowing Capacity	948		948		$ 949
Payments of Dividends	135	181	246	350
Sundry income (expense) [Member] | The Dow Chemical Company [Member]
Related Party Transaction [Line Items]
Related Party Transaction, Expenses from Transactions with Related Party	7	8	14	16
Cost of Sales [Member] | The Dow Chemical Company [Member]
Related Party Transaction [Line Items]
Related Party Transaction, Expenses from Transactions with Related Party	$ 22	$ 23	$ 44	$ 40