10-Q

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C.  20549

FORM 10-Q

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

For the quarterly period ended September 30, 2018

OR

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

For the transition period from     To  

Commission file number:  1-3247

CORNING INCORPORATED

(Exact name of registrant as specified in its charter)

`

New York	16-0393470
(State or other jurisdiction of incorporation or organization)	(I.R.S. Employer Identification No.)
One Riverfront Plaza, Corning, New York	14831
(Address of principal executive offices)	(Zip Code)

607-974-9000

(Registrant’s telephone number, including area code)

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports) and (2) has been subject to such filing requirements for the past 90 days.

Yes ☒ No ☐

Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted 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 such files).

Yes ☒ 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	☒	Accelerated filer	☐
Non‑accelerated filer	☐	Smaller reporting company	☐
		Emerging growth company	☐

If an emerging growth company, indicated 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 pursuant to Section 13(a) of the Exchange Act.

Yes ☐ No ☐

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

Yes ☐ No ☒

Indicate the number of shares outstanding of each of the issuer’s classes of common stock, as of the latest practicable date.

Class	Outstanding as of October 19, 2018
Corning’s Common Stock, $0.50 par value per share	800,399,090shares

© 2018 Corning Incorporated. All Rights Reserved.

1

INDEX

PART I – FINANCIAL INFORMATION
	Page
Item 1. Financial Statements
Consolidated Statements of Income (Unaudited) for the three and nine months ended September 30, 2018 and 2017	3
Consolidated Statements of Comprehensive Income (Unaudited) for the three and nine months ended September 30, 2018 and 2017	4
Consolidated Balance Sheets (Unaudited) at September 30, 2018 and December 31, 2017	5
Consolidated Statements of Cash Flows (Unaudited) for the nine months ended September 30, 2018 and 2017	6
Notes to Consolidated Financial Statements (Unaudited)	7
Item 2. Management’s Discussion and Analysis of Financial Condition and Results of Operations	24
Item 3. Quantitative and Qualitative Disclosures About Market Risk	44
Item 4. Controls and Procedures	44
PART II – OTHER INFORMATION
Item 1. Legal Proceedings	45
Item 1A.  Risk Factors	45
Item 2. Unregistered Sales of Equity Securities and Use of Proceeds	46
Item 6. Exhibits	47
Signatures	48

© 2018 Corning Incorporated. All Rights Reserved.

2

CORNING INCORPORATED AND SUBSIDIARY COMPANIES

CONSOLIDATED STATEMENTS OF INCOME

(Unaudited; in millions, except per share amounts)

	Three Months Ended				Nine Months Ended
	September 30,				September 30,
	2018		2017		2018		2017
Net sales	$	3,008	$	2,607	$	8,255	$	7,479
Cost of sales		1,776		1,557		4,996		4,491
Gross margin		1,232		1,050		3,259		2,988
Operating expenses:
Selling, general and administrative expenses		439		375		1,352		1,072
Research, development and engineering expenses		244		215		728		623
Amortization of purchased intangibles		27		18		68		53
Operating income		522		442		1,111		1,240
Equity in earnings of affiliated companies		32		31		102		148
Interest income		7		10		29		33
Interest expense		(45)		(37)		(140)		(112)
Translated earnings contract gain (loss), net		230		26		66		(193)
Other income (expense), net		12		7		(11)		(25)
Income before income taxes		758		479		1,157		1,091
Provision for income taxes (Note 5)		(133)		(89)		(383)		(176)
Net income attributable to Corning Incorporated	$	625	$	390	$	774	$	915
Earnings per common share attributable to Corning Incorporated:
Basic (Note 6)	$	0.75	$	0.41	$	0.85	$	0.93
Diluted (Note 6)	$	0.67	$	0.39	$	0.82	$	0.89
Dividends declared per common share	$	0.18	$	0.155	$	0.54	$	0.465

The accompanying notes are an integral part of these consolidated financial statements.

© 2018 Corning Incorporated. All Rights Reserved.

3

CORNING INCORPORATED AND SUBSIDIARY COMPANIES

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME

(Unaudited; in millions)

	Three Months Ended				Nine Months Ended
	September 30,				September 30,
	2018		2017		2018		2017
Net income attributable to Corning Incorporated	$	625	$	390	$	774	$	915
Foreign currency translation adjustments and other   (Note 14)		(128)		53		(292)		457
Net unrealized (losses) gains on investments				(2)				14
Unamortized (losses) gains and prior service credits   for postretirement benefit plans						(6)		17
Net unrealized gains on designated hedges		27		4		4		42
Other comprehensive (loss) income, net of tax		(101)		55		(294)		530
Comprehensive income attributable to Corning Incorporated	$	524	$	445	$	480	$	1,445

The accompanying notes are an integral part of these consolidated financial statements.

© 2018 Corning Incorporated. All Rights Reserved.

4

CORNING INCORPORATED AND SUBSIDIARY COMPANIES

CONSOLIDATED BALANCE SHEETS

(Unaudited; in millions, except share and per share amounts)

	September 30,		December 31,
	2018		2017
Assets
Current assets:
Cash and cash equivalents	$	1,903	$	4,317
Trade accounts receivable, net of doubtful accounts and allowances - $60 and $60		1,973		1,807
Inventories, net of inventory reserves - $173 and $169 (Note 7)		1,921		1,712
Other current assets		835		991
Total current assets		6,632		8,827
Investments		322		340
Property, plant and equipment, net of accumulated depreciation - $11,368 and $10,809		14,345		14,017
Goodwill, net (Note 9)		1,930		1,694
Other intangible assets, net (Note 9)		1,309		869
Deferred income taxes (Note 5)		831		813
Other assets		1,023		934
Total Assets	$	26,392	$	27,494
Liabilities and Equity
Current liabilities:
Current portion of long-term debt and short-term borrowings	$	252	$	379
Accounts payable		1,092		1,439
Other accrued liabilities (Note 3 and Note 11)		1,768		1,391
Total current liabilities		3,112		3,209
Long-term debt (Note 4)		5,056		4,749
Postretirement benefits other than pensions (Note 10)		701		749
Other liabilities (Note 3 and Note 11)		3,545		3,017
Total liabilities		12,414		11,724
Commitments, contingencies and guarantees (Note 3)
Shareholders’ equity (Note 14):
Convertible preferred stock, Series A – Par value $100 per share;   Shares authorized 3,100; Shares issued: 2,300		2,300		2,300
Common stock – Par value $0.50 per share; Shares authorized 3.8 billion;   Shares issued: 1.7 billion and 1.7 billion		856		854
Additional paid-in capital – common stock		14,201		14,089
Retained earnings		16,186		15,930
Treasury stock, at cost; Shares held: 914 million and 850 million		(18,517)		(16,633)
Accumulated other comprehensive loss		(1,136)		(842)
Total Corning Incorporated shareholders’ equity		13,890		15,698
Noncontrolling interests		88		72
Total equity		13,978		15,770
Total Liabilities and Equity	$	26,392	$	27,494

The accompanying notes are an integral part of these consolidated financial statements. 

© 2018 Corning Incorporated. All Rights Reserved.

5

CORNING INCORPORATED AND SUBSIDIARY COMPANIES

CONSOLIDATED STATEMENTS OF CASH FLOWS

(Unaudited; in millions)

	Nine Months Ended
	September 30,
	2018		2017
Cash Flows from Operating Activities:
Net income	$	774	$	915
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation		895		799
Amortization of purchased intangibles		68		53
Equity in earnings of affiliated companies		(102)		(148)
Dividends received from affiliated companies		106		101
Deferred tax expense (benefit) provision		53		(62)
Incentives and customer deposits		691
Translated earnings contract (gain) loss		(66)		193
Unrealized translation losses (gains) on transactions		52		(264)
Changes in certain working capital items:
Trade accounts receivable		(197)		(190)
Inventories		(235)		(166)
Other current assets		(36)		(109)
Accounts payable and other current liabilities		94		(123)
Other, net		(119)		117
Net cash provided by operating activities		1,978		1,116
Cash Flows from Investing Activities:
Capital expenditures		(1,629)		(1,247)
Purchase of equipment for related party		(63)
Acquisition of businesses, net of cash received		(804)		(171)
Proceeds from settlement of initial contingent consideration asset		196
Realized gains on translated earnings contracts		62		199
Other, net		(28)		1
Net cash used in investing activities		(2,266)		(1,218)
Cash Flows from Financing Activities:
Net repayments of short-term borrowings and current portion of long-term debt		(375)
Proceeds from issuance of long-term debt, net		596		702
Principal payments under capital lease obligations		(2)		(1)
Payments of employee withholding tax on stock awards		(12)		(14)
Proceeds from the exercise of stock options		74		275
Repurchases of common stock for treasury		(1,880)		(2,064)
Dividends paid		(517)		(493)
Net cash used in financing activities		(2,116)		(1,595)
Effect of exchange rates on cash		(10)		271
Net decrease in cash and cash equivalents		(2,414)		(1,426)
Cash and cash equivalents at beginning of period		4,317		5,291
Cash and cash equivalents at end of period	$	1,903	$	3,865

The accompanying notes are an integral part of these consolidated financial statements.

© 2018 Corning Incorporated. All Rights Reserved.

6

CORNING INCORPORATED AND SUBSIDIARY COMPANIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)

1.   Significant Accounting Policies

Basis of Presentation

In these notes, the terms “Corning,” “Company,” “we,” “us,” or “our” mean Corning Incorporated and its subsidiary companies.

The accompanying unaudited consolidated financial statements have been prepared pursuant to the rules and regulations of the Securities and Exchange Commission (“SEC”) and in accordance with U.S. Generally Accepted Accounting Principles (“GAAP”) for interim financial information.  Certain information and note disclosures normally included in financial statements prepared in accordance with GAAP have been omitted or condensed.  These interim consolidated financial statements should be read in conjunction with Corning’s consolidated financial statements and notes thereto included in its Annual Report on Form 10-K for the year ended December 31, 2017 (“2017 Form 10-K”).

The unaudited consolidated financial statements reflect all adjustments which, in the opinion of management, are necessary for a fair statement of the results of operations, financial position and cash flows for the interim periods presented.  All such adjustments are of a normal recurring nature.  The results for interim periods are not necessarily indicative of results which may be expected for any other interim period or for the full year.

On January 1, 2018, we adopted Accounting Standards Update (“ASU”) No. 2014-09 ASC (Topic 606), Revenue from Contracts with Customers, and applied the modified retrospective method of accounting to those contracts which were not completed as of January 1, 2018. Results for reporting periods beginning after January 1, 2018 are presented under Topic 606, while prior period amounts are not adjusted and continue to be reported in accordance with our historic accounting under ASC Topic 605 “Revenue Recognition”.  Because the impact of adopting the standard on Corning’s financial statements was immaterial, we have not made an adjustment to opening retained earnings.

One of Corning’s equity affiliates is currently assessing the potential impact of adopting ASU 2014-09 on its financial statements and will adopt the standard on January 1, 2019.  Our preliminary analysis indicates that the impact of adoption will not have a material impact on Corning’s financial statements.

On January 1, 2018, Corning adopted ASU 2016-15, Statement of Cash Flows (Topic 230): Classification of Certain Cash Receipts and Cash Payments, which refines the classification of certain aspects of the cash flow statement in regards to debt prepayment, settlement of debt instruments, contingent consideration payments, proceeds from insurance claims and life insurance policies, distribution from equity method investees, beneficial interests in securitization transactions and separately identifiable cash flows.  The impact of adopting the standard on Corning’s financial statements was not material.  

On January 1, 2018, we adopted ASU No. 2017-07, Compensation—Retirement Benefits (Topic 715): Improving the Presentation of Net Periodic Pension Cost and Net Periodic Postretirement Benefit Cost. The service cost component of net periodic pension and postretirement benefit cost is presented with other current compensation costs in operating income.  The remaining components are included in the line item Other income (expense), net, in the Consolidated Statements of Income.  Corning has applied the practical expedient which permits it to use the amounts disclosed in its pension and other postretirement benefit plan note for the prior comparative periods as the estimation basis for applying the retrospective presentation requirements.  The impact of adopting the standard on Corning’s financial statements was not material.  

Certain prior year amounts have been reclassified to conform to the current-year presentation.  These reclassifications had no impact on our results of operations, financial position, or changes in shareholders’ equity. 

New Accounting Standards

In February 2016, the FASB issued ASU 2016-02, Leases (Topic 842), which supersedes all existing guidance on accounting for leases in ASC Topic 840.  ASU 2016-02 will continue to classify leases as either financing or operating, with classification affecting the pattern of expense recognition in the statement of income.  This standard will be effective for fiscal years beginning after December 15, 2018, including interim periods within those fiscal years.  ASU 2016-02 is required to be applied with a modified retrospective approach with various optional practical expedients.  We are currently assessing the potential impact of adopting this standard on our financial statements and related disclosures.

© 2018 Corning Incorporated. All Rights Reserved.

7

One of Corning’s equity affiliates is currently assessing the potential impact of adopting this standard on its financial statements and elected to adopt the standard on January 1, 2020.

In February 2018, the FASB issued ASU 2018-02, Income Statement - Reporting Comprehensive Income, which allows for reclassification from accumulated other comprehensive income to retained earnings for stranded tax effects resulting from the 2017 Tax Cuts and Jobs Act.  ASU 2018-02 is effective for annual reporting periods beginning after December 15, 2018, and interim periods within those annual periods.  We are currently assessing the potential impact of adopting ASU 2018-02 on our financial statements.

2.   Revenue

On January 1, 2018, we adopted ASC Topic 606 “Revenue from Contracts with Customer”, and all related amendments, using the modified retrospective method applied to those contracts which were not completed as of January 1, 2018.  Results for reporting periods beginning after January 1, 2018 are presented under Topic 606, while prior period amounts are not adjusted and continue to be reported in accordance with our historic accounting under ASC Topic 605 “Revenue Recognition”. 

We have determined that the impact of transition to the new standard is immaterial to our revenue recognition model since the vast majority of our recognition is based on point in time transfer of control.  Accordingly, we have not made any adjustment to opening retained earnings.

Product Revenue (Point in Time)

The majority of our revenues are generated by delivery of products to our customers and recognized at a point in time based on our evaluation of when the customer obtains control of the products.  Revenue is recognized when all performance obligations under the terms of a contract with our customer are satisfied, and control of the product has been transferred to the customer.  If customer acceptance clauses are present and it cannot be objectively determined that control has been transferred, revenue is only recorded when customer acceptance is received and all performance obligations have been satisfied.  Sales of goods typically do not include multiple product and/or service elements.

Revenue is measured as the amount of consideration we expect to receive in exchange for transferring goods or providing services. Sales tax, value-added tax, and other taxes we collect concurrent with revenue-producing activities are excluded from revenue.  Incidental contract costs that are not material in the context of the delivery of goods and services are recognized as expense.

At the time revenue is recognized, allowances are recorded, with the related reduction to revenue, for estimated product returns, allowances and price discounts based upon historical experience and related terms of customer arrangements.  Where we have offered product warranties, we also establish liabilities for estimated warranty costs based upon historical experience and specific warranty provisions.  Warranty liabilities are adjusted when experience indicates the expected outcome will differ from initial estimates of the liability.  Product warranty liabilities are not material at September 30, 2018 and December 31, 2017.

Other Revenue (Over Time)

Corning’s over time revenues are mainly related to Telecommunications products, and are comprised of design, install, training and software maintenance services.The performance obligations under these contracts generally require services to be performed over time, resulting in either a straight-line amortization method or an input method using incurred and forecasted expense to predict revenue recognition patterns which follows satisfaction of the performance obligation.  Corning’s other revenue is inconsequential to our results.

© 2018 Corning Incorporated. All Rights Reserved.

8

Revenue Disaggregation Table

The following table shows revenues by major product categories, similar to our reportable segment disclosure.  Within each product category, contract terms, conditions and economic factors affecting the nature, amount, timing and uncertainty around revenue recognition and cash flows are substantially similar.  The commercial markets and selling channels are also similar. Except for an inconsequential amount of Telecommunications products, our product category revenues are recognized at point in time when control transfers to the customer.  Prior year amounts are presented under the ASC 605 basis of revenue recognition. 

Our revenues by product category are as follows (in millions):

	Three Months Ended				Nine Months Ended
	September 30,				September 30,
	2018		2017		2018		2017
Display products	$	815	$	767	$	2,315	$	2,250
Telecommunication products		1,117		917		3,026		2,617
Specialty glass products		459		373		1,080		1,010
Environmental substrate and filter products		331		277		970		815
Life science products		231		223		708		654
All Other		55		50		156		133
	$	3,008	$	2,607	$	8,255	$	7,479

Contract Assets and Liabilities

Contract assets, such as costs to obtain or fulfill contracts, are an insignificant component of Corning’s revenue recognition process.  The majority of Corning’s cost of fulfillment as a manufacturer of products is classified as inventory, fixed assets and intangible assets, which are accounted for under the respective guidance for those asset types.  Other costs of contract fulfillment are immaterial due to the nature of our products and their respective manufacturing processes.  

Contract liabilities include deferred revenues, other advanced payments and customer deposits. Deferred revenue and other advanced payments are not significant to our operations and are classified as part of other current liabilities in our financial statements.  Customer deposits are predominately related to Display products and are classified as part of other current liabilities and other long- term liabilities as appropriate, and are disclosed below. 

Customer Deposits

As of September 30, 2018, Corning has customer deposits of approximately $1.0 billion.  These represent non-refundable cash deposits for customers to secure rights to an amount of glass produced by Corning under long-term supply agreements.  The duration of these long-term supply agreements ranges up to ten years. As glass is shipped to customers, Corning will recognize revenue and issue credit memoranda to reduce the amount of the customer deposit liability, which are applied against customer receivables resulting from the sale of glass.  In 2018 and 2017, no credit memoranda were issued.

Practical Expedients and Exemptions

We do not disclose the value of unsatisfied performance obligations for (i) contracts with an original expected length of one year or less and (ii) contracts for which we recognize revenue at the amount to which we have the right to invoice for services performed.

We treat shipping and handling fees as a fulfillment cost and not as a separate performance obligation under the terms of our revenue contracts due to the perfunctory nature of the shipping and handling obligations. 

© 2018 Corning Incorporated. All Rights Reserved.

9

3.   Commitments, Contingencies and Guarantees

Asbestos Claims

Corning and PPG Industries, Inc. each owned 50% of the capital stock of Pittsburgh Corning Corporation (“PCC”).  PCC filed for Chapter 11 reorganization in 2000 and the Modified Third Amended Plan of Reorganization for PCC (the “Plan”) became effective in April 2016.  At December 31, 2016, the Company’s liability under the Plan was $290 million, which is required to be paid through a series of fixed payments beginning in the second quarter of 2017.  Paymentsof$35 million and $70 million were made in June 2018 and June 2017, respectively.  At September 30, 2018, the total amount of payments due in years 2019 through 2022 is $185 million, of which $50million is due in the second quarter of 2019 and is classified as a current liability.  The remaining $135 million is classified as a non-current liability.

Non-PCC Asbestos Claims and Insurance Litigation

Corning is a defendant in certain cases alleging injuries from asbestos unrelated to PCC (the “non-PCC asbestos claims”) which had been stayed pending the confirmation of the Plan.  The stay was lifted on August 25, 2016.  Corning previously established a $150 million reserve for these non-PCC asbestos claims.  The estimated reserve represents the undiscounted projection of claims and related legal fees over the next 20 years.  The amount may need to be adjusted in future periods as more data becomes available; however, we cannot estimate any lesser or greater liability at this time.  At September 30, 2018 and December 31, 2017, the amount of the reserve for these non-PCC asbestos claims was $147 million.

Several of Corning’s insurers have commenced litigation in state courts for a declaration of the rights and obligations of the parties under insurance policies related to Corning’s asbestos claims.  Corning has resolved these issues with a majority of its relevant insurers, and is vigorously contesting these cases with the remaining relevant insurers.  Management is unable to predict the outcome of the litigation with these remaining insurers.

Dow Corning Chapter 11 Related Matters

Until June 1, 2016, Corning and The Dow Chemical Company (“Dow”) each owned 50% of the common stock of Dow Corning Corporation (“Dow Corning”). On May 31, 2016, Corning and Dow realigned their ownership interests in Dow Corning. In connection with the realignment, Corning retained its indirect ownership interest in the Hemlock Semiconductor Group and acquired HS Upstate, Inc. (now known as Corning Research & Development Corporation) which had been capitalized by Dow Corning with $4.8 billion. Following the realignment, Corning no longer owns any interest in Dow Corning.  In connection with the realignment, Corning agreed to indemnify Dow Corning for 50% of Dow Corning’s non-ordinary course, pre-closing liabilities to the extent such liabilities exceed the amounts reserved for them by Dow Corning as of May 31, 2016, including two legacy Dow Corning matters: the Dow Corning Breast Implant Litigation, and the Dow Corning Bankruptcy Pendency Interest Claims.

Dow Corning Breast Implant Litigation

In May 1995, Dow Corning filed for bankruptcy protection to address pending and claimed liabilities arising from many thousands of breast implant product lawsuits. On June1, 2004, Dow Corning emerged from Chapter 11 with a Plan of Reorganization (the “Plan”) which provided for the settlement or other resolution of implant claims. The Plan also includes releases for Corning and Dow as shareholders in exchange for contributions to the Plan.

Under the terms of the Plan, Dow Corning has established and funded a Settlement Trust and a Litigation Facility, referred to above, to provide a means for tort claimants to settle or litigate their claims. Inclusive of insurance, Dow Corning has paid approximately $1.8billion to the Settlement Trust.  As of May 31, 2016, Dow Corning had recorded a reserve for breast implant litigation of $290 million.  In the event Dow Corning’s total liability for these claims exceeds such amount, Corning may be required to indemnify Dow Corning for up to 50% of the excess liability.  At September 30, 2018, Dow Corning had recorded a reserve for breast implant litigation of $263million.

© 2018 Corning Incorporated. All Rights Reserved.

10

Dow Corning Bankruptcy Pendency Interest Claims

As a separate matter arising from the bankruptcy proceedings, Dow Corning is defending claims asserted by a number of commercial creditors who claim additional compounded interest at default and state statutory judgment rates as well as attorneys’ fees and other enforcement costs, during the period from May 1995 through June 2004.  As of May 31, 2016, Dow Corning had recorded a reserve for these claims of $107 million.  In the event Dow Corning’s liability for these claims exceeds such amount, Corning may be required to indemnify Dow Corning for up to 50% of the excess liability, subject to certain conditions and limits.  At  September 30, 2018, Dow Corning estimated the liability to commercial creditors to be within the range of $81million to $260 million. As of September 30, 2018, Dow Corning had recorded a reserve for these claims of $81 million.

Other Commitments and Contingencies

Corning is a defendant in various lawsuits, including environmental and product-related suits, and is subject to various claims that arise in the normal course of business.  In the opinion of management, the likelihood that the ultimate disposition of these matters will have a material adverse effect on Corning’s consolidated financial position, liquidity, or results of operations, is remote.  Other than certain asbestos related claims, there are no other material loss contingencies related to litigation.

Corning has been named by the Environmental Protection Agency (“the Agency”) under the Superfund Act, or by state governments under similar state laws, as a potentially responsible party for 15 active hazardous waste sites.  Under the Superfund Act, all parties who may have contributed any waste to a hazardous waste site, identified by the Agency, are jointly and severally liable for the cost of cleanup unless the Agency agrees otherwise.  It is Corning’s policy to accrue for its estimated liability related to Superfund sites and other environmental liabilities related to property owned by Corning based on expert analysis and continual monitoring by both internal and external consultants.  At September 30, 2018 and December31, 2017, Corning had accrued approximately $33million and $38 million (undiscounted) for the estimated liability for environmental cleanup and related litigation.  Based upon the information developed to date, management believes that the accrued reserve is a reasonable estimate of the Company’s liability and that the risk of an additional loss in an amount materially higher than that accrued is remote.

The ability of certain subsidiaries and affiliated companies to transfer funds is limited by provisions of foreign government regulations, affiliate agreements and certain loan agreements.  At September 30, 2018, the amount of equity subject to such restrictions for consolidated subsidiaries and affiliated companies was not significant.  While this amount is legally restricted, it does not result in operational difficulties since we have generally permitted subsidiaries to retain a majority of equity to support their growth programs.

4.   Debt

Based on borrowing rates currently available to us for loans with similar terms and maturities, the fair value of long-term debt was $5.1 billion at September 30, 2018 and December 31, 2017, respectively, compared to recorded book values of $5.1 billion and $4.7 billion at September 30, 2018 and December 31, 2017, respectively.  The Company measures the fair value of its long-term debt using Level 2 inputs based primarily on current market yields for its existing debt traded in the secondary market.

Corning did not have outstanding commercial paper at September 30, 2018 and December 31, 2017.

In the third quarter of 2018, Corning amended and restated its revolving credit agreement (the “Revolving Credit Agreement”).  The Revolving Credit Agreement provides a $1.5 billion unsecured multi-currency line of credit and expires August 15, 2023.  At September 30, 2018, there were no outstanding amounts under the Revolving Credit Agreement. 

Debt Issuances

2018

In the second quarter of 2018, Corning issued three Japanese yen-denominated debt securities (the “Notes”), as follows:

· ¥10 billion 0.722% senior unsecured notes with a maturity of 7 years;

· ¥30.5 billion 1.043% senior unsecured notes with a maturity of 10 years; and

· ¥25 billion 1.219% senior unsecured notes with a maturity of 12 years.

The proceeds from the Notes were received in Japanese yen and converted to U.S. dollars on the date of issuance.  The net proceeds received in U.S. dollars, after deducting offering expenses, were $596 million.  Payments of principle and interest on the Notes will be in Japanese yen, or should yen be unavailable due to circumstances beyond Corning’s control, a U.S. dollar equivalent.

© 2018 Corning Incorporated. All Rights Reserved.

11

On a quarterly basis, Corning will recognize the transaction gains and losses resulting from changes in the JPY/USD exchange rate in the Other expense, net line of the Consolidated Statements of Income.  Cash proceeds from the offerings and payments for debt issuance costs are disclosed as financing activities, and cash payments to bondholders for interest will be disclosed as operating activities, in the Consolidated Statements of Cash Flows.

5.   Income Taxes

Our provision for income taxes and the related effective income tax rates are as follows (in millions):

	Three Months Ended				Nine Months Ended
	September 30,				September 30,
	2018		2017		2018		2017
Provision for income taxes	$	(133)	$	(89)	$	(383)	$	(176)
Effective tax rate		17.5%		18.6%		33.1%		16.1%

For the three months ended September 30, 2018, the effective income tax rate differed from the U.S. statutory rate of 21% primarily due to the following:

· Additional tax amounts related to global intangible low-taxed income (“GILTI”);

· Benefits related to foreign derived intangible income (“FDII”);

· An increase in the estimated annual impact of the base erosion and anti-deferral tax (“BEAT”); and

· A  $48 million benefit related to an adjustment to the provisional estimate of the one-time Toll Charge recorded in 2017.  

For the nine months ended September 30, 2018, the effective income tax rate differed from the U.S. statutory rate of 21% primarily due to the following:

· Additional tax expense of $172 million related to a preliminary agreement with the Internal Revenue Service (“IRS”) to settle the income tax audit for the years 2013 and 2014;

· Additional tax amounts related to global intangible low-taxed income (“GILTI”);

· Benefits related to foreign derived intangible income (“FDII”);

· An increase in the estimated annual impact of the base erosion and anti-deferral tax (“BEAT”);

· A  $28 million benefit from the release of a valuation allowance on deferred tax assets that are now considered realizable; and

· A  $48 million benefit related to an adjustment to the provisional estimate of the one-time Toll Charge recorded in 2017.  

For the three and nine months ended September 30, 2017, the effective income tax benefit differed from the U.S. statutory rate of 35% primarily due to the following benefits:

· Rate differences on income (loss) of consolidated foreign companies; and

· The benefit of excess foreign tax credits resulting from the inclusion of foreign earnings in U.S. income.

The Tax Cuts and Jobs Act (the “2017 Tax Act”) was enacted on December 22, 2017.  The 2017 Tax Act reduced the U.S. federal corporate income tax rate from 35% to 21%, and requires companies to pay a one-time transition tax, (the “Toll Charge”), on earnings of certain foreign subsidiaries that were previously tax deferred and creates new taxes on certain foreign sourced earnings.  We are applying the guidance in SAB 118 when accounting for the enactment-date effects of the Act.  As of September 30, 2018, we have not completed our accounting for all of the tax effects of the 2017 Tax Act.  We have made a reasonable estimate of certain effects of the 2017 Tax Act. However, in other cases, we have not been able to make a reasonable estimate and continue to account for those items based on our existing accounting under ASC 740, Income Taxes, and the provisions of the tax laws that were in effect immediately prior to enactment.  In all cases, we will continue to make and refine our calculations as additional analysis is completed.  Our estimates may also be affected as we gain a more thorough understanding of the 2017 Tax Act, including recently issued and anticipated proposed guidance, between now and December 31, 2018.  These changes could be material to income tax expense.

At year end December 31, 2017, we remeasured certain deferred tax assets and liabilities based on the rates at which they are expected to reverse in the future, which is generally 21%.  We recorded a provisional amount of $347 million at that time.  At December 31, 2017, we recorded a one-time Toll Charge based on our unrepatriated earnings of certain foreign subsidiaries that were previously deferred.  This charge resulted in a provisional tax expense amount of $1.1 billion.  At September 30, 2018, we have reduced our estimate of the one-time Toll Charge recorded in 2017 by $48 million in conjunction with filing our Federal income tax return.  We will continue to analyze and refine our calculations related to the measurement of these balances.

© 2018 Corning Incorporated. All Rights Reserved.

12

As of September 30, 2018, Corning has not yet completed its analysis of tax reform on its assertion regarding its indefinitely reinvested foreign earnings; therefore, the Company will continue to follow its historic position while it continues to analyze this issue.  While Corning is not changing its assertion at this time, the Company distributed approximately $2.2 billion during 2018 from its foreign subsidiaries to the U.S. parent of those subsidiaries.  There are no incremental taxes beyond the Toll Charge recorded in 2017 due with respect to this distribution of cash.

Under new guidance, a company can make a policy election to account for tax on global intangible low-taxed income (“GILTI”) as a period cost only or to also recognize deferred tax assets and liabilities when basis differences exist that are expected to affect the amount of GILTI inclusion upon reversal.  Corning’s accounting for the impact of the GILTI provisions of the 2017 Tax Act is incomplete and, as a result, it has not yet elected a policy to account for the GILTI provisions.

We will continue to monitor future guidance and to assess the impacts of the 2017 Tax Act.

Corning has reached a preliminary agreement with the IRS Exam team to resolve its 2013 and 2014 audits.  This preliminary agreement resulted in $172 million of additional tax expense in the first quarter of 2018, of which $12 million relates to interest expense, net of tax benefit.  Corning will use tax attributes to cover most of the tax expense.

Corning Display Technologies Taiwan (“CDTT”) is currently under audit by the Ministry of Finance for the 2015 tax year.  We expect this audit to take up to 2 years to complete.

Corning Precision Materials (“CPM”) is involved in several income and withholding tax disputes with South Korea.  The tax amounts in dispute are on deposit with the South Korean tax authorities and CPM has booked receivables for the amounts on deposit.  Corning believes that its tax positions are appropriate and is vigorously defending such positions.

Under its historic policy, Corning will continue to indefinitely reinvest substantially all of its foreign earnings, with the exception of an immaterial amount of current earnings that have very low or no tax cost associated with their repatriation.  Our current analysis indicates that we have sufficient U.S. liquidity, including borrowing capacity, to fund foreseeable U.S. cash needs without requiring the repatriation of foreign cash.

6.   Earnings per Common Share

The following table sets forth the computation of basic and diluted earnings per common share (in millions, except per share amounts):

	Three Months Ended				Nine Months Ended
	September 30,				September 30,
	2018		2017		2018		2017
Net income attributable to Corning Incorporated	$	625	$	390	$	774	$	915
Less:  Series A convertible preferred stock dividend		24		24		73		73
Net income available to common stockholders – basic		601		366		701		842
Plus:  Series A convertible preferred stock dividend		24		24		73		73
Net income available to common stockholders – diluted	$	625	$	390	$	774	$	915
Weighted-average common shares outstanding – basic		805		883		824		905
Effect of dilutive securities:
Employee stock options and other dilutive securities		10		11		9		11
Series A convertible preferred stock		115		115		115		115
Weighted-average common shares outstanding – diluted		930		1,009		948		1,031
Basic earnings per common share	$	0.75	$	0.41	$	0.85	$	0.93
Diluted earnings per common share	$	0.67	$	0.39	$	0.82	$	0.89
Antidilutive potential shares excluded from   diluted earnings per common share:
Employee stock options and awards		1		1		2		2
Total		1		1		2		2

© 2018 Corning Incorporated. All Rights Reserved.

13

7.   Inventories, Net of Inventory Reserves

Inventories, net of inventory reserves comprise the following (in millions):

	September 30,		December 31,
	2018		2017
Finished goods	$	801	$	739
Work in process		367		322
Raw materials and accessories		380		306
Supplies and packing materials		373		345
Total inventories, net of inventory reserves	$	1,921	$	1,712

8.   Acquisition

On June 1, 2018, Corning acquired substantially all of The 3M Company’s Communications Market Division including a manufacturing facility and certain other assets (collectively referred to as “Purchased Assets”) for approximately $801 million.  The Purchased Assets constitute a business, which designs, manufactures and markets high bandwidth and optical fiber products. The acquisition was accounted for as a business combination.

A summary of the preliminary allocation of the total purchase price to the net tangible and other intangible assets acquired, with the remainder recorded as goodwill based on fair value is as follows (1) (in millions):

Fixed assets	$	32
Other net assets		5
Other intangible assets		511
Net tangible and intangible assets	$	548
Purchase price		801
Goodwill (2)	$	253

(1)Amounts reflect measurement period adjustments.

(2)The goodwill recognized is deductible for U.S. income tax purposes.  The goodwill was allocated to the Optical Communications segment.

Goodwill is related to the value of 3M’s Communications Market Division product and customer portfolio and its combination with Corning’s existing optical communications platform, as well as synergies and other intangibles that do not qualify for separate recognition.  Other intangible assets consist of customer relationships, trade names and developed technology and are amortized over various useful lives ranging from 3 to 14 years.  Acquisition-related costs of $16 million in the nine months ended September 30, 2018, included costs for legal, accounting, valuation and other professional services and were included in selling, general and administrative expense in the Consolidated Statements of Income.  Supplemental pro forma information was not provided because the Purchased Assets are not material to Corning’s consolidated financial statements.

9.  Goodwill and Other Intangible Assets

The carrying amount of goodwill by segment for the periods ended September 30, 2018 and December 31, 2017 is as follows (in millions):

	Display		Optical		Specialty		Life		All
	Technologies		Communications		Materials		Sciences		Other		Total
Balance at December 31, 2017	$	136	$	671	$	150	$	623	$	114	$	1,694
Acquired goodwill (1)				242				2				244
Measurement period    adjustment				11								11
Foreign currency translation    adjustment		(4)		(7)				(6)		(2)		(19)
Balance at September 30, 2018	$	132	$	917	$	150	$	619	$	112	$	1,930

(1)The Company completed the acquisition of 3M’s Communications Market Division in the Optical Communications segment during the second quarter of 2018.  Refer to Note 8 (Acquisitions) to the Consolidated Financial Statements for additional information on this acquisition.

© 2018 Corning Incorporated. All Rights Reserved.

14

Corning’s gross goodwill balances for the periods ended September 30, 2018 and December 31, 2017 were $8.4 and $8.2 billion, respectively.  Accumulated impairment losses were $6.5 billion for the periods ended September 30, 2018 and December 31, 2017, and were generated primarily through goodwill impairments related to the Optical Communications segment.

Other intangible assets are as follows (in millions):

	September 30, 2018						December 31, 2017
			Accumulated						Accumulated
	Gross		amortization		Net		Gross		amortization		Net
Amortized intangible assets:
Patents, trademarks, and    trade names	$	465	$	198	$	267	$	382	$	188	$	194
Customer lists and other		1,299		257		1,042		884		209		675
Total	$	1,764	$	455	$	1,309	$	1,266	$	397	$	869

Corning’s amortized intangible assets are primarily related to the Optical Communications and Life Sciences segments.  The net carrying amount of intangible assets increased during the first nine months of 2018, primarily due to the acquisition of 3M’s Communications Market Division of $511 million and other acquisition of $7 million of other intangible assets, offset by amortization of $68 million and foreign currency translation adjustments of $10 million.

Amortization expense related to all intangible assets is estimated to be $112 million annually for 2019, $111 million annually for 2020, $110 million annually for 2021 and 2022, and $109 million annually for 2023.

10.  Employee Retirement Plans

The following table summarizes the components of net periodic benefit cost for Corning’s defined benefit pension and postretirement health care and life insurance plans (in millions):

	Pension benefits								Postretirement benefits
	Three months ended				Nine months ended				Three months ended				Nine months ended
	September 30,				September 30,				September 30,				September 30,
	2018		2017		2018		2017		2018		2017		2018		2017
Service cost	$	26	$	22	$	77	$	69	$	3	$	2	$	9	$	7
Interest cost		32		32		97		94		6		7		18		20
Expected return on plan assets		(47)		(43)		(142)		(130)
Amortization of prior service    cost (credit)		2		1		6		4		(2)		(1)		(5)		(2)
Recognition of actuarial loss						1		15
Total pension and postretirement    benefit expense	$	13	$	12	$	39	$	52	$	7	$	8	$	22	$	25

The components of net period benefit cost other than the service cost component are included in the line item “Other expense, net” in the consolidated statements of income.

On January 1, 2018, we adopted Compensation—Retirement Benefits: Improving the Presentation of Net Periodic Pension Cost and Net Periodic Postretirement Benefit Cost.  The service cost component of net periodic pension and postretirement benefit cost is presented with other current compensation costs in operating income.  The remaining components are included in the line item Other income (expense), net, in the consolidated statements of income. 

Corning has applied the practical expedient which permits it to use the amounts disclosed in its pension and other postretirement benefit plan note for the prior comparative periods as the estimation basis for applying the retrospective presentation requirements.  See Note 1 (Significant Accounting Policies) for additional information.

© 2018 Corning Incorporated. All Rights Reserved.

15

11.  Other Liabilities

Other liabilities follow (in millions):

	September 30,		December 31,
	2018		2017
Current liabilities:
Wages and employee benefits	$	533	$	620
Income taxes		252		148
Derivative instruments		50		42
Asbestos and other litigation (Note 3)		148		41
Other current liabilities		785		540
Other accrued liabilities	$	1,768	$	1,391
Non-current liabilities:
Defined benefit pension plan liabilities	$	783	$	713
Derivative instruments		287		333
Asbestos and other litigation (Note 3)		279		338
Investment in Hemlock Semiconductor Group ("HSG") (1)		113		105
Customer deposits (Note 2)		923		382
Deferred tax liabilities		328		451
Other non-current liabilities		832		695
Other liabilities	$	3,545	$	3,017

(1) The negative carrying value resulted from a one-time charge to this entity in 2014 for the permanent abandonment of certain assets.

12.  Hedging Activities

Undesignated Hedges

The table below includes a total gross notional value for translated earnings contracts of $14.7 billion and $14.3 billion at September 30, 2018 and December 31, 2017, respectively.  These include gross notional value for average rate forwards of $12.1billion and $13.0 billion, zero-cost collars and purchased put or call options of $2.6 billion and $1.3 billion at September 30, 2018 and December 31, 2017, respectively.  The majority of the average rate forward contracts hedge a significant portion of the Company’s exposure to the Japanese yen with maturities spanning the years 2018-2022 and with gross notional values of $9.7 billion and $11.7 billion at September 30, 2018 and December 31, 2017, respectively.  The average rate forward contracts also partially hedge the impacts of the South Korean won, Chinese yuan, euro and British pound translation on the Company’s projected net income.  With respect to the zero-cost collars, the gross notional amount includes the value of both the put and call options.  However, due to the nature of the zero-cost collars, only the put or the call option can be exercised at maturity.

© 2018 Corning Incorporated. All Rights Reserved.

16

The following tables summarize the notional amounts and respective fair values of Corning’s derivative financial instruments on a gross basis for September 30, 2018 and December 31, 2017 (in millions):

					Asset derivatives					Liability derivatives
	Gross notional amount				Balance	Fair value				Balance	Fair value
	Sept. 30,		Dec. 31,		sheet	Sept. 30,		Dec. 31,		sheet	Sept. 30,		Dec. 31,
	2018		2017		location	2018		2017		location	2018		2017
Derivatives   designated as   hedging   instruments
Foreign exchange   contracts (1)	$	376	$	294	Other current assets	$	12	$	20
					Other assets		2		1
Interest rate   contracts		850		550	Other current assets		9			Other accrued liabilities	$	(2)
										Other liabilities		(8)	$	(8)
Derivatives not   designated as   hedging   instruments
Foreign exchange   contracts, other		1,136		599	Other current assets		9		2	Other accrued liabilities		(8)		(7)
Translated earnings   contracts		14,679		14,275	Other current assets		159		176	Other accrued liabilities		(40)		(34)
					Other assets		64		66	Other liabilities		(279)		(325)
Total derivatives	$	17,041	$	15,718		$	255	$	265		$	(337)	$	(374)

(1) Cash flow hedges with a typical duration of 24 months or less.

© 2018 Corning Incorporated. All Rights Reserved.

17

The following table summarizes the effect of derivative financial instruments on Corning’s consolidated financial statements for the three and nine months ended September 30, 2018 and 2017 (in millions):

	Effect of derivative instruments on the consolidated financial statements
	for the three months ended September 30,
	Gain recognized in other				Location of gain/(loss)	Gain/(loss) reclassified from
	comprehensive income				reclassified from	accumulated OCI into
Derivatives in hedging	(OCI)				accumulated OCI into	income (effective) (1)
relationships	2018		2017		income (effective)	2018		2017
Interest rate contracts	$	12
Foreign exchange contracts		19	$	3	Cost of sales	$	4	$	(1)
Total cash flow hedges	$	31	$	3		$	4	$	(1)

	Effect of derivative instruments on the consolidated financial statements
	for the nine months ended September 30,
	Gain recognized in				Location of gain/(loss)	Gain/(loss) reclassified from
	other comprehensive income				reclassified from	accumulated OCI into
Derivatives in hedging	(OCI)				accumulated OCI into	income ineffective/effective (1)
relationships	2018		2017		income (effective)	2018		2017
					Sales			$	1
Interest rate contracts	$	9			Cost of sales	$	10		(11)
Foreign exchange contracts		2	$	36	Other expense, net		(1)		(1)
Total cash flow hedges	$	11	$	36		$	9	$	(11)

(1) The amount of hedge ineffectiveness at September 30, 2018 and 2017 was insignificant.

The following table summarizes the effect on the consolidated financial statements relating to Corning’s derivative financial instruments (in millions):

		Gain (loss) recognized in income
		Three months ended				Nine months ended
	Location of gain/(loss)	September 30,				September 30,
Undesignated derivatives	recognized in income	2018		2017		2018		2017
Foreign exchange contracts   – balance sheet and loans	Other income (expense), net	$	10	$	(7)	$	19	$	(19)
Foreign currency hedges   related to translated earnings	Translated earnings   contract gain (loss), net		230		26		66		(193)
Total undesignated		$	240	$	19	$	85	$	(212)

13.  Fair Value Measurements

Fair value standards under U.S. GAAP define fair value, establish a framework for measuring fair value in applying generally accepted accounting principles, and require disclosures about fair value measurements.  The standards also identify two kinds of inputs that are used to determine the fair value of assets and liabilities: observable and unobservable.  Observable inputs are based on market data or independent sources while unobservable inputs are based on the Company’s own market assumptions.  Once inputs have been characterized, the inputs are prioritized into one of three broad levels (provided in the table below) used to measure fair value.  Fair value standards apply whenever an entity is measuring fair value under other accounting pronouncements that require or permit fair value measurement and require the use of observable market data when available. 

© 2018 Corning Incorporated. All Rights Reserved.

18

The following tables provide fair value measurement information for the Company’s major categories of financial assets and liabilities measured on a recurring basis (in millions):

			Fair value measurements at reporting date using
			Quoted prices in	Significant other		Significant
			active markets for	observable		unobservable
	September 30,		identical assets	inputs		inputs
	2018		(Level 1)	(Level 2)		(Level 3)
Current assets:
Other current assets (1)	$	189		$	189
Non-current assets:
Investments (2)	$	32				$	32
Other assets (1)	$	66		$	66
Current liabilities:
Other accrued liabilities (1)	$	50		$	50
Non-current liabilities:
Other liabilities (1)(3)	$	307		$	287	$	20

(1) Derivative assets and liabilities include foreign exchange contracts which are measured using observable inputs for similar assets and liabilities.

(2) One of the Company’s equity securities was measured using unobservable (Level 3) inputs, in the amount of $32 million.

(3) Other liabilities include contingent consideration that was measured using unobservable (Level 3) inputs, in the amount of $20 million.

			Fair value measurements at reporting date using
			Quoted prices in	Significant other		Significant
			active markets for	observable		unobservable
	December 31,		identical assets	inputs		inputs
	2017		(Level 1)	(Level 2)		(Level 3)
Current assets:
Other current assets (1)(2)	$	497		$	197	$	300
Non-current assets:
Other assets (1)	$	68		$	68
Current liabilities:
Other accrued liabilities (1)(2)	$	44		$	42	$	2
Non-current liabilities:
Other liabilities (1)(2)	$	353		$	333	$	20

(1) Derivative assets and liabilities include foreign exchange contracts which are measured using observable inputs for similar assets and liabilities.

(2) At December 31, 2017, other current assets, other accrued liabilities and other liabilities include contingent consideration that was measured using unobservable (Level 3) inputs, in the amounts of $300 million, $2 million and $20 million, respectively.

As a result of the acquisition of Samsung Corning Precision Materials in January 2014, the Company had contingent consideration that was measured using unobservable (Level 3) inputs in an option pricing model.  The fair value of the contingent consideration was calculated to be $300 million as of December 31, 2017.  This amount was settled in cash and received in June 2018.

There were no significant financial assets and liabilities measured on a nonrecurring basis as of September 30, 2018 and December 31, 2017.

© 2018 Corning Incorporated. All Rights Reserved.

19

14.  Shareholders’ Equity

Fixed Rate Cumulative Convertible Preferred Stock, Series A

Corning has 2,300 outstanding shares of Fixed Rate Cumulative Convertible Preferred Stock, Series A.  The Preferred Stock is convertible at the option of the holder and the Company upon certain events, at a conversion rate of 50,000 shares of Corning’s common stock per one share of Preferred Stock, subject to certain anti-dilution provisions.  As of September 30, 2018, the Preferred Stock has not been converted, and none of the anti-dilution provisions have been triggered. 

Share Repurchases

2017 Share Repurchases

In December 2016, Corning’s Board of Directors approved a $4 billion share repurchase program with no expiration (the “2016 Repurchase Program”).  In the year ended December  31, 2017, Corning entered into two separate accelerated share repurchase agreements under this program (the “2017 ASR agreements”).  In the second quarter of 2017, Corning entered into and finalized an accelerated share repurchase agreement under which we paid $500 million for a total of 17.1 million shares.  In the third quarter of 2017, Corning entered into and finalized an additional accelerated share repurchase agreement under which we paid $500 million for a total of 17.2 million shares.

In addition to the 2017 ASR agreements, during the year ended December  31, 2017, the Company repurchased 50.1 million shares of common stock on the market for approximately$1.4 billion, resulting in a total of 84.4 million shares repurchased for approximately $2.4 billion during 2017.

2018 Share Repurchases

On April 26, 2018, Corning’s Board of Directors approved a $2 billion share repurchase program with no expiration (the “2018 Repurchase Program”).  In the three and nine months ended September 30, 2018, the Company repurchased 11.8 million and 63.4 million shares of common stock on the open market for approximately $384 million and $1.9 billion, respectively, as part of its 2016 and 2018 Repurchase Programs. 

Accumulated Other Comprehensive Loss

In the three and nine months ended September 30, 2018 and 2017, the change in accumulated other comprehensive loss  was primarily related to the foreign currency translation adjustment.

A summary of changes in the foreign currency translation adjustment component of accumulated other comprehensive lossis as follows (in millions)(1):

	Three months ended				Nine months ended
	September 30,				September 30,
	2018		2017		2018		2017
Beginning balance	$	(693)	$	(871)	$	(529)	$	(1,275)
Other comprehensive (loss) income (2)		(128)		49		(281)		435
Equity method affiliates (3)				4		(11)		22
Net current-period other comprehensive (loss) income - foreign currency translation adjustment		(128)		53		(292)		457
Ending balance	$	(821)	$	(818)	$	(821)	$	(818)

(1) All amounts are after tax.  Amounts in parentheses indicate debits to accumulated other comprehensive loss.

(2) For the three months ended September 30, 2018 and 2017, tax amounts are not significant.  For thenine months ended September 30, 2018 and 2017, amounts are net of tax benefit of $28 million and tax expense of $47 million, respectively. 

(3) Tax effects are not significant.

© 2018 Corning Incorporated. All Rights Reserved.

20

15.  Reportable Segments

Our reportable segments are as follows:

· Display Technologies – manufactures glass substrates primarily for flat panel displays.

· Optical Communications – manufactures carrier and enterprise network components for the telecommunications industry.

· Specialty Materials – manufactures products that provide more than 150 material formulations for glass, glass ceramics and fluoride crystals to meet demand for unique customer needs.

· Environmental Technologies – manufactures ceramic substrates and filters for automotive and diesel applications.

· Life Sciences – manufactures glass and plastic labware, equipment, media and reagents enabling workflow solutions for scientific applications.

All other segments that do not meet the quantitative threshold for separate reporting have been grouped as “All Other.”  This group is primarily comprised of the results of the pharmaceutical technologies business and new product lines and development projects, as well as certain corporate investments such as Eurokera and Keraglass equity affiliates. 

Effective beginning in the first quarter of 2018, the Company has changed its measurement of segment sales and segment net income, and has recast prior periods presented based on the new methodology.  Included in this new measurement is a change in our segment tax rate to 21%to better reflect the new corporate tax rate under the 2017 Tax Act.  Additionally, the impact of changes in the Japanese yen, Korean won, Chinese yuan and New Taiwan dollar will be excluded from segment sales and segment net income for the Display Technologies and Specialty Materials segments, and certain income and expenses that were previously allocated to our segments are now included in the unallocated amounts in the reconciliation of reportable segment net income to consolidated net income.  These include items that are not used by our chief operating decision maker (“CODM”) in evaluating the results of or in allocating resources to our segments and include the following items:  the impact of our translated earnings contracts; acquisition-related costs; discrete tax items and other tax-related adjustments; litigation, regulatory and other legal matters; restructuring, impairment and other charges; adjustments relating to acquisitions; and other non-recurring non-operational items.  Although we exclude these amounts from segment results, they are included in reported consolidated results.

We prepared the financial results for our reportable segments on a basis that is consistent with the manner in which we internally disaggregate financial information to assist the CODM in making internal operating decisions.  We included the earnings of equity affiliates that are closely associated with our reportable segments in the respective segment’s net income.  We have allocated certain common expenses among reportable segments differently than we would for stand-alone financial information.  Segment net income may not be consistent with measures used by other companies. 

© 2018 Corning Incorporated. All Rights Reserved.

21

Reportable Segments (in millions)

	Display		Optical		Specialty		Environmental		Life		All
	Technologies		Communications		Materials		Technologies		Sciences		Other		Total
Three months ended
September 30, 2018
Segment net sales	$	852	$	1,117	$	459	$	331	$	231	$	55	$	3,045
Depreciation (1)	$	146	$	55	$	34	$	30	$	12	$	10	$	287
Research, development and    engineering expenses (2)	$	26	$	53	$	43	$	28	$	5	$	58	$	213
Income tax (provision)    benefit	$	(57)	$	(46)	$	(31)	$	(16)	$	(8)	$	19	$	(139)
Segment net income (loss) (3)	$	218	$	168	$	116	$	60	$	30	$	(72)	$	520

	Display		Optical		Specialty		Environmental		Life		All
	Technologies		Communications		Materials		Technologies		Sciences		Other		Total
Three months ended
September 30, 2017
Segment net sales	$	795	$	917	$	373	$	277	$	223	$	50	$	2,635
Depreciation (1)	$	134	$	49	$	34	$	31	$	14	$	12	$	274
Research, development and    engineering expenses (2)	$	21	$	44	$	38	$	28	$	6	$	53	$	190
Income tax (provision)    benefit	$	(56)	$	(35)	$	(22)	$	(11)	$	(7)	$	17	$	(114)
Segment net income (loss) (3)	$	211	$	132	$	86	$	40	$	25	$	(64)	$	430

	Display		Optical		Specialty		Environmental		Life		All
	Technologies		Communications		Materials		Technologies		Sciences		Other		Total
Nine Months Ended
September 30, 2018
Segment net sales	$	2,377	$	3,026	$	1,080	$	970	$	708	$	156	$	8,317
Depreciation (1)	$	436	$	160	$	102	$	89	$	39	$	31	$	857
Research, development and    engineering expenses (2)	$	76	$	153	$	123	$	86	$	15	$	174	$	627
Income tax (provision)    benefit	$	(157)	$	(117)	$	(60)	$	(44)	$	(23)	$	60	$	(341)
Segment net income (loss) (3)	$	595	$	427	$	226	$	166	$	88	$	(224)	$	1,278

	Display		Optical		Specialty		Environmental		Life		All
	Technologies		Communications		Materials		Technologies		Sciences		Other		Total
Nine Months Ended
September 30, 2017
Segment net sales	$	2,354	$	2,617	$	1,010	$	815	$	654	$	133	$	7,583
Depreciation (1)	$	393	$	142	$	94	$	93	$	39	$	34	$	795
Research, development and    engineering expenses (2)	$	63	$	121	$	111	$	80	$	18	$	157	$	550
Income tax (provision)    benefit	$	(180)	$	(100)	$	(56)	$	(33)	$	(19)	$	48	$	(340)
Segment net income (loss) (3)	$	682	$	370	$	213	$	122	$	71	$	(186)	$	1,272

(1) Depreciation expense for Corning’s reportable segments includes an allocation of depreciation of corporate property not specifically identifiable to a segment.

(2) Research, development and engineering expenses include direct project spending that is identifiable to a segment.

(3) Many of Corning’s administrative and staff functions are performed on a centralized basis.  Where practicable, Corning charges these expenses to segments based upon the extent to which each business uses a centralized function.  Other staff functions, such as corporate finance, human resources and legal, are allocated to segments, primarily as a percentage of sales.  Expenses that are not allocated to the segments are included in the reconciliation of reportable segment net income to consolidated net income below.

© 2018 Corning Incorporated. All Rights Reserved.

22

A reconciliation of reportable segment and All Other net sales to consolidated net sales follows (in millions):

	Three months ended				Nine months ended
	September 30,				September 30,
	2018		2017		2018		2017
Net sales of reportable segments and All Other	$	3,045	$	2,635	$	8,317	$	7,583
Impact of foreign currency movements (1)		(37)		(28)		(62)		(104)
Net sales	$	3,008	$	2,607	$	8,255	$	7,479

(1)This amount primarily represents the impact of foreign currency adjustments in the Display Technologies segment.

A reconciliation of reportable segment net income to consolidated net income follows (in millions):

	Three months ended				Nine months ended
	September 30,				September 30,
	2018		2017		2018		2017
Net income of reportable segments	$	592	$	494	$	1,502	$	1,458
Net loss of All Other		(72)		(64)		(224)		(186)
Unallocated amounts:
Impact of foreign currency movements		(42)		(34)		(110)		(124)
Gain (loss) on foreign currency hedges       related to translated earnings		230		26		66		(193)
Translation gain on Japanese yen-denominated debt		30		14		28		14
Litigation, regulatory and other legal matters		(11)				(143)		12
Research, development, and engineering expense		(31)		(25)		(99)		(72)
Equity in earnings of affiliated companies (1)		31		29		100		139
Amortization of intangibles		(27)		(18)		(68)		(53)
Interest expense, net		(38)		(27)		(111)		(79)
Income tax benefit (provision)		6		25		(42)		164
Other corporate items		(43)		(30)		(125)		(165)
Net income	$	625	$	390	$	774	$	915

(1) Primarily represents the equity earnings of HSG.

© 2018 Corning Incorporated. All Rights Reserved.

23

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

ORGANIZATION OF INFORMATION

Management’s Discussion and Analysis of Financial Condition and Results of Operations (“MD&A”) provides a historical and prospective narrative on the Company’s financial condition and results of operations.  This interim MD&A should be read in conjunction with the MD&A in our 2017 Form 10-K.  The various sections of this MD&A contain a number of forward-looking statements that involve a number of risks and uncertainties.  Words such as “anticipates,” “expects,” “intends,” “plans,” “goals,” “believes,” “seeks,” “estimates,” “continues,” “may,” “will,” “should,” and variations of such words and similar expressions are intended to identify such forward-looking statements.  In addition, any statements that refer to projections of our future financial performance, our anticipated growth and trends in our businesses, uncertain events or assumptions, and other characterizations of future events or circumstances are forward-looking statements.  Such statements are based on our current expectations and could be affected by the uncertainties and risk factors described throughout this filing and particularly in “Risk Factors” in Part I, Item 1A of our 2017 Form 10-K, and as may be updated in our Forms 10-Q.  Our actual results may differ materially, and these forward-looking statements do not reflect the potential impact of any divestitures, mergers, acquisitions, or other business combinations that had not been completed as of September 30, 2018.

Our MD&A includes the following sections:

· Overview

· Results of Operations

· Core Performance Measures

· Reportable Segments

· Capital Resources and Liquidity

· Critical Accounting Estimates

· Environment

· Forward-Looking Statements

OVERVIEW

Strategy and Capital Allocation Framework

In October 2015, Corning announced a strategy and capital allocation framework (the “Framework”) that reflects the Company’s financial and operational strengths, as well as its ongoing commitment to increasing shareholder value.  The Framework outlines our leadership priorities and articulates the opportunities we see across our businesses.  We designed the Framework to create significant value for shareholders by focusing our portfolio and leveraging our financial strength.  Under our Framework, we target generating $26 billion to $30 billion of cash through 2019, returning more than $12.5 billion to shareholders and investing $10 billion to extend our leadership positions and deliver growth.

Our probability of success increases as we invest in our world-class capabilities.  Corning is concentrating approximately 80% of its research, development and engineering investment and capital spending on a cohesive set of three core technologies, four manufacturing and engineering platforms, and five market-access platforms.  This strategy allows us to quickly apply our talents and repurpose our assets as needed.

Summary of results for the three and nine months ended September 30, 2018

Net sales for the three and nine months ended September 30, 2018 were $3.0 billion and $8.3 billion, compared to $2.6 billion and $7.5 billion, respectively, for the same periods in 2017, driven by an increase in net sales in all segments.  The increase in both periods was led by the Optical Communications segment, which increased $200 million and $409 million, respectively, due to higher sales of carrier network products in North America and Europe, an increase in sales of enterprise network products from growth in data centers and sales from 3M’s Communications Market Division which we acquired in June.  Net sales in the Display Technologies segment increased by $57 million and $23 million, respectively, for the three and nine months ended September 30, 2018, with volumes exceeding the display glass market’s strong growth and more than offsetting price declines.The Specialty Materials segment net sales increased by $86 million and $70 million, respectively, resulting from strong demand for Gorilla Glass products in support of new product releases.Net sales for Environmental Technologies increased $54 million and $155 million, respectively, driven by growth in all product categories.  Life Sciences sales increased by $8 million and $54 million, respectively, driven by higher sales across all product lines.

© 2018 Corning Incorporated. All Rights Reserved.

24

In the third quarter of 2018, we generated net income of $625 million, or $0.67 per share, compared to net income of $390 million, or $0.39 per share, for the same period in 2017.  The increase in net income of $235 million, or 60%, was primarily driven by the following items (amounts presented after-tax):

· An increase of $154 million in translated earnings contract gains;

· The positive impact of discrete tax and other tax-related items in the amount of $55 million. These items include a $48 million tax adjustment to the Toll Charge recorded in 2017 and other one-time tax items, offset largely by audit settlements; ;  

· Higher segment net income in all our business segments, up $98 million; and

· Lower segment net income in the All Other segment, down $8 million, resulting from continued investment in product development.

Diluted earnings per share increased by $0.28 per share, or 72%, when compared to the third quarter of 2017, driven by the increase in net income described above, coupled with the repurchase of 76 million shares of common stock over the last twelve months.

In the first three quarters of 2018, we generated net income of $774 million, or $0.82 per share, compared to net income of $915 million, or $0.89 per share, for the same period in 2017.  The decrease in net income of $141 million, or 15%, was primarily driven by the following items (amounts presented after-tax):

· An increase of $120 million in legal expenses, driven by a ruling in an intellectual property lawsuit and developments in civil litigation matters;

· An increase of $53 million in discrete tax and other tax related items, including the preliminary agreement with the Internal Revenue Service to settle an audit in the amount of $172 million, offset by a $48 million benefit related an adjustment of the provisional estimate of the one-time Toll Charge recorded in 2017, and a $28 million benefit from the release of a valuation allowance on deferred tax assets that are now considered realizable;

· A decrease of $46 million in equity earnings, driven by the absence of a $46 million gain recorded in the first quarter of 2017 resulting from the modification of a long-term sales agreement with a customer of HSG;

· Higher net income in the Optical Communications, Environmental Technologies, Specialty Materials and Life Sciences segments, up $57 million, $44 million, $13 million and $17 million, respectively, offset by lower net income in the Display Technologies and All Other segments of $87 million and $38 million, respectively; and

· An increase in the translated earnings contract gains of $174 million.

Diluted earnings per share decreased by $0.07 per share, or 8%, when compared to the nine months ended September 30, 2017, driven by the decrease in net income described above, coupled with the repurchase of 76 million shares of common stock over the last twelve months.

The translation impact of fluctuations in foreign currency exchange rates, including the impact of hedges realized in the current quarter, did not materially impact Corning’s consolidated net income in the three and nine months ended September 30, 2018 when compared to the same periods in 2017.

2018 Corporate Outlook

We believe 2018 will be another year of strong growth and investment, consistent with our Strategy and Capital Allocation Framework, and anticipate that segment net sales will exceed $11.3 billion.  In our Display Technologies segment, we expect pricing to continue to improve, with moderate year-over-year declines during the fourth quarter, an important milestone toward our goal of stabilizing returns.  For the full year, we anticipate Corning’s glass volume will grow faster than the expected display glass market growth of mid-single digits, driven by the ramp of our Gen 10.5 facility in China.  In the Optical Communications segment, we expect sales to increase in the high-teen percentage range, including approximately $200 million from the acquisition of 3M’s Communications Market Division.  We expect organic growth will improve by a low-teen percentage range driven by strong demand from carrier and enterprise network customers. We expect mid-single digit percentage growth in the Specialty Materials segment, driven by new model launches and the adoption of our innovations. We expect sales growth in the mid-teen percentage range in our Environmental Technologies segment, driven by continued strength in automotive product sales, on-going improvements in the heavy-duty diesel market and the commercial launch of gas-particulate filters.  We expect mid-to-high single digit percentage growth in the Life Sciences segment.

© 2018 Corning Incorporated. All Rights Reserved.

25

RESULTS OF OPERATIONS

Selected highlights for the three and nine months ended September 30, 2018 and 2017 follow (in millions):

	Three months ended				%	Nine months ended				%
	September 30,				change	September 30,				change
	2018		2017		18 vs. 17	2018		2017		18 vs. 17
Net sales	$	3,008	$	2,607	15%	$	8,255	$	7,479	10%
Gross margin	$	1,232	$	1,050	17%	$	3,259	$	2,988	9%
(gross margin %)		41%		40%			39%		40%
Selling, general and   administrative expenses	$	439	$	375	17%	$	1,352	$	1,072	26%
(as a % of net sales)		15%		14%			16%		14%
Research, development and   engineering expenses	$	244	$	215	13%	$	728	$	623	17%
(as a % of net sales)		8%		8%			9%		8%
Translated earnings contract   gain (loss), net	$	230	$	26	785%	$	66	$	(193)	134%
(as a % of net sales)		8%		1%			1%		(3%)
Income before income taxes	$	758	$	479	58%	$	1,157	$	1,091	6%
(as a % of net sales)		25%		18%			14%		15%
Provision for income taxes	$	(133)	$	(89)	(49%)	$	(383)	$	(176)	(118%)
(as a % of net sales)		(4%)		(3%)			(5%)		(2%)
Net income attributable to   Corning Incorporated	$	625	$	390	60%	$	774	$	915	(15%)
(as a % of net sales)		21%		15%			9%		12%

Net Sales

The following table presents net sales by reportable segment (in millions):

	Three months ended				%	Nine months ended				%
	September 30,				change	September 30,				change
	2018		2017		18 vs. 17	2018		2017		18 vs. 17
Display Technologies	$	852	$	795	7%	$	2,377	$	2,354	1%
Optical Communications		1,117		917	22%		3,026		2,617	16%
Specialty Materials		459		373	23%		1,080		1,010	7%
Environmental Technologies		331		277	19%		970		815	19%
Life Sciences		231		223	4%		708		654	8%
All Other		55		50	10%		156		133	17%
Total net sales of reportable segments	$	3,045	$	2,635	16%	$	8,317	$	7,583	10%

© 2018 Corning Incorporated. All Rights Reserved.

26

For the three months ended September 30, 2018, net sales of reportable segments increased by $410 million, or 16%, when compared to the same period in 2017.  The primary sales drivers by segment were as follows:

· Display Technologies net sales increased $57 million compared to the prior year, with the increase in glass volume in the low-teens in percentage terms offset by price declines in the mid-single digits;

· An increase of $200 million in the Optical Communications segment, due to higher sales of carrier and enterprise network products, up $107 million and $93 million, respectively;

· An increase of $86 million in the Specialty Materials segment driven by higher sales of Gorilla Glass products;

· An increase of $54 million in the Environmental Technologies segment, driven by sales growth across all product lines; and

· An increase of $8 million in the Life Sciences segment, driven by higher sales in all product categories.

Movements in foreign exchange rates increased Corning’s consolidated net sales in the amount of $9 million in the three months ended September 30, 2018, when compared to the prior year.

For the nine months ended September 30, 2018, net sales of reportable segments increased by $734 million, or 10%, when compared to the same period in 2017.  The primary sales drivers by segment were as follows:

· An increase of $23 million in the Display Technologies segment, driven by increases in glass volume in the high-single digits in percentage terms, offset partially by price declines;

· An increase of $409 million in the Optical Communications segment, due to higher sales of carrier and enterprise network products, up $251 million and $158 million, respectively;

· An increase of $70 million in the Specialty Materials segment driven by higher sales of Gorilla Glass products;  

· An increase of $155 million in the Environmental Technologies segment, driven by sales increases across all product lines; and

· An increase of $54 million in the Life Sciences segment, driven by higher sales in all product categories.

Movements in foreign exchange rates decreased Corning’s consolidated net sales in the amount of $42 million in the nine months ended September 30, 2018, when compared to the prior year.

Cost of Sales

The types of expenses included in the cost of sales line item are: raw materials consumption, including direct and indirect materials; salaries, wages and benefits; depreciation and amortization; production utilities; production-related purchasing; warehousing (including receiving and inspection); repairs and maintenance; inter-location inventory transfer costs; production and warehousing facility property insurance; rent for production facilities; and other production overhead.

Gross Margin

In the three and nine months ended September 30, 2018, gross margin increased by $182 million, or 17%, and $271 million, or 9%, respectively, primarily driven by an increase in sales across all operating segments.  Gross margin as a percentage of net sales increased by 1% for the three months ended September 30, 2018.  Gross margin as a percentage of sales declined by 1% for the year to date period driven by glass price declines in the high-single digits in percentage terms, combined with spending for capacity expansions in the Display Technologies and Optical Communications segments.

Selling, General and Administrative Expenses

When compared to the third quarter of 2017, selling, general and administrative expenses increased by $64 million, or 17%, in the three months ended September 30, 2018.  The increase was due to the following items:

· An increase of $16 million in the Optical Communications segment driven largely by the acquisition of 3M’s Communications Market Division;

· An increase of $15 million in variable compensation expense;

· An increase of $21 million in litigation expense resulting from developments in commercial litigation matters; and

· An increase in our emerging businesses, up $5  million, driven by investments in new customers and new business growth.

© 2018 Corning Incorporated. All Rights Reserved.

27

When compared to the first three quarters of 2017, selling, general and administrative expenses increased by $280 million, or 26%, in the first three quarters of 2018.  The increase was due to the following items:

· An increase of $165 million in litigation and other legal expenses,  driven by a ruling in an intellectual property lawsuit and developments in commercial litigation matters;

· An increase in the Optical Communications segment, up $40 million,largely driven by the acquisition of 3M’s Communications Market Division, and an increase in our emerging businesses, up $16 million, driven by investments in new customers and new business growth; and

· Increased acquisition related costs, up $21 million.

The types of expenses included in the selling, general and administrative expenses line item are: salaries, wages and benefits; stock-based compensation expense; travel; sales commissions; professional fees; and depreciation and amortization, utilities and rent for administrative facilities.

Research, Development and Engineering Expenses

For the three months ended September 30, 2018, research, development and engineering expenses increased by $29 million, or 13%, when compared to the same period last year, driven by higher costs associated with new product launches and our emerging businesses.  As a percentage of sales, these expenses were flat when compared to the same period last year.

For the nine months ended September 30, 2018, research, development and engineering expenses increased by $105 million, or 17%, when compared to the same period last year, driven by higher costs associated with new product launches and our emerging businesses.  As a percentage of sales, these expenses increased slightly when compared to the same period last year.

Equity in Earnings of Affiliated Companies

The following provides a summary of equity in earnings of affiliated companies (in millions):

	Three months ended				Nine months ended
	September 30,				September 30,
	2018		2017		2018		2017
Hemlock Semiconductor Group	$	28	$	29	$	97	$	139
All other		4		2		5		9
Total equity earnings	$	32	$	31	$	102	$	148

In the third quarter ending September 30, 2018, equity in earnings of affiliated companies remain relatively consistent with the prior year.

In the first three quarters of 2018, equity in earnings of affiliated companies decreased by $46 million, driven by the absence of a $46 million gain recorded in the first quarter of 2017 resulting from the modification of long-term sales agreements with a customer of HSG.

© 2018 Corning Incorporated. All Rights Reserved.

28

Translated earnings contract gain (loss), net

Included in the line item Translated earnings contract gain (loss), net, is the impact of foreign currency hedges which hedge our translation exposure arising from movements in the Japanese yen, South Korean won, euro, Chinese yuan and British pound and its impact on our net earnings.  The following table provides detailed information on the impact of our translated earnings contract gains and losses:

	Three Months Ended				Three Months Ended				Change
	September 30, 2018				September 30, 2017				2018 vs. 2017
	Income				Income				Income
	before				before				before
	income		Net		income		Net		income		Net
(in millions)	taxes		income		taxes		income		taxes		income
Hedges related to translated earnings:
Realized gain, net	$	24	$	19	$	50	$	31	$	(26)	$	(12)
Unrealized gain, net		206		151		(24)		(15)		230		166
Total translated earnings contract   gain, net	$	230	$	170	$	26	$	16	$	204	$	154

	Nine Months Ended				Nine Months Ended				Change
	September 30, 2018				September 30, 2017				2018 vs. 2017
	Income				Income				Income
	before				before				before
	income		Net		income		Net		income		Net
(in millions)	taxes		income		taxes		income		taxes		income
Hedges related to translated earnings:
Realized gain, net	$	57	$	45	$	199	$	124	$	(142)	$	(79)
Unrealized loss, net		9		(9)		(392)		(247)		401		238
Total translated earnings contract   gain (loss), net	$	66	$	36	$	(193)	$	(123)	$	259	$	159

The gross notional value outstanding on our translated earnings contracts at September 30, 2018 and December 31, 2017 were as follows (in billions):

	September 30,			December 31,
	2018		2017
Japanese yen-denominated hedges	$	12.4	$	13.0
South Korean won-denominated hedges		0.3		0.8
Euro-denominated hedges		1.3		0.3
Chinese yuan-denominated hedges		0.6		0.2
British pound-denominated hedges		0.1
Total gross notional value outstanding	$	14.7	$	14.3

© 2018 Corning Incorporated. All Rights Reserved.

29

Income Before Income Taxes

The translation impact of fluctuations in foreign currency exchange rates, including the impact of hedges realized in the current quarter, did not materially impact Corning’s consolidated income before income taxes in the three and nine months ended September 30, 2018 when compared to the same periods in 2017.

Provision for Income Taxes

Our provision for income taxes and the related effective income tax rate are as follows (in millions):

	Three Months Ended				Nine Months Ended
	September 30,				September 30,
	2018		2017		2018		2017
Provision for income taxes	$	(133)	$	(89)	$	(383)	$	(176)
Effective tax rate		17.5%		18.6%		33.1%		16.1%

For the three months ended September 30, 2018, the effective income tax rate differed from the U.S. statutory rate of 21% primarily due to the following:

· Additional tax amounts related to global intangible low-taxed income (“GILTI”);

· Benefits related to foreign derived intangible income (“FDII”);

· An increase in the estimated annual impact of the base erosion and anti-deferral tax (“BEAT”); and

· A $48 million benefit related to an adjustment to the provisional estimate of the one-time Toll Charge recorded in 2017.  

For the nine months ended September 30, 2018, the effective income tax rate differed from the U.S. statutory rate of 21% primarily due to the following:

· Additional tax expense of $172 million related to a preliminary agreement with the Internal Revenue Service (“IRS”) to settle the income tax audit for the years 2013 and 2014;

· Additional tax amounts related to global intangible low-taxed income (“GILTI”);

· Benefits related to foreign derived intangible income (“FDII”);

· An increase in the estimated annual impact of the base erosion and anti-deferral tax (“BEAT”);

· A $28 million benefit from the release of a valuation allowance on deferred tax assets that are now considered realizable; and

· A $48 million benefit related to an adjustment to the provisional estimate of the one-time Toll Charge recorded in 2017.  

For the three and nine months ended September 30, 2017, the effective income tax benefit differed from the U.S. statutory rate of 35% primarily due to the following benefits:

· Rate differences on income (loss) of consolidated foreign companies; and

· The benefit of excess foreign tax credits resulting from the inclusion of foreign earnings in U.S. income.

Refer to Note 5 (Income Taxes) to the consolidated financial statements for additional information.

Net Income Attributable to Corning Incorporated

As a result of the items discussed above, our net income and per share data is as follows (in millions, except per share amounts):

	Three months ended				Nine months ended
	September 30,				September 30,
	2018		2017		2018		2017
Net income attributable to Corning Incorporated	$	625	$	390	$	774	$	915
Net income attributable to Corning Incorporated used   in basic earnings per common share calculation (1)	$	601	$	366	$	701	$	842
Net income attributable to Corning Incorporated used   in diluted earnings per common share calculation (1)	$	625	$	390	$	774	$	915
Basic earnings per common share	$	0.75	$	0.41	$	0.85	$	0.93
Diluted earnings per common share	$	0.67	$	0.39	$	0.82	$	0.89
Weighted-average common shares outstanding - basic		805		883		824		905
Weighted-average common shares outstanding - diluted		930		1,009		948		1,031

(1) Refer to Note 6 (Earnings per Common Share) to the consolidated financial statements for additional information.

© 2018 Corning Incorporated. All Rights Reserved.

30

Comprehensive Income

For the three months ended September 30, 2018 comprehensive income increased by $79 million when compared to the same period in 2017, due to an increase in net income of $235 million and higher unrealized gains on designated hedges of $23 million, offset by the negative impact of the change in foreign currency translation gains and losses of $181 million, driven primarily by the Japanese yen and the Korean won.

For the nine months ended September 30, 2018 comprehensive income decreased by $965 million when compared to the same period in 2017, due to the negative impact of the change in foreign currency translation adjustments of $749 million, driven primarily by the devaluation of the Japanese yen and the Korean won, a $141 million decrease in net income and a decrease of $38 million in unrealized gains on designated hedges.

Refer to Note 14 (Shareholders’ Equity) to the consolidated financial statements for additional information.

CORE PERFORMANCE MEASURES

In managing the Company and assessing our financial performance, we adjust certain measures provided by our consolidated financial statements to exclude specific items to arrive at core performance measures.  These items include gains and losses on our translated earnings contracts, acquisition-related costs, certain discrete tax items, restructuring and restructuring-related charges, certain litigation-related expenses, pension mark-to-market adjustments and other items which do not reflect on-going operating results of the Company or our equity affiliates.  Additionally, Corning has adopted the use of constant currency reporting for our Display Technologies and Specialty Materials segments for the Japanese yen, South Korean won, Chinese yuan and New Taiwan dollar currencies.  The Company believes that the use of constant currency reporting allows investors to understand our results without the volatility of currency fluctuations, and reflects the underlying economics of the translated earnings contracts used to mitigate the impact of changes in currency exchange rates on our earnings and cash flows.  Corning also believes that reporting core performance measures provides investors greater transparency to the information used by our management team to make financial and operational decisions. 

Core performance measures are not prepared in accordance with Generally Accepted Accounting Principles in the United States (“GAAP”).  We believe investors should consider these non-GAAP measures in evaluating our results as they are more indicative of our core operating performance and how management evaluates our operational results and trends.  These measures are not, and should not be viewed as a substitute for, GAAP reporting measures.  With respect to the Company’s outlooks for future periods, it is not possible to provide reconciliations for these non-GAAP measures because the Company does not forecast the movement of the Japanese yen, South Korean won, Chinese yuan or New Taiwan dollar against the U.S. dollar, or other items that do not reflect ongoing operations, nor does it forecast items that have not yet occurred or are out of the Company’s control.  As a result, the Company is unable to provide outlook information on a GAAP basis.

For a reconciliation of non-GAAP performance measures to their most directly comparable GAAP financial measure, please see “Reconciliation of Non-GAAP Measures” below.

© 2018 Corning Incorporated. All Rights Reserved.

31

RESULTS OF OPERATIONS – CORE PERFORMANCE MEASURES

Selected highlights from our continuing operations, excluding certain items, follow (in millions):

	Three months ended				%	Nine months ended				%
	September 30,				change	September 30,				change
	2018		2017		18 vs. 17	2018		2017		18 vs. 17
Core net sales	$	3,045	$	2,635	16%	$	8,317	$	7,583	10%
Core equity in earnings of affiliated companies	$	32	$	32	0%	$	89	$	78	14%
Core earnings	$	476	$	403	18%	$	1,134	$	1,179	(4)%

Core Net Sales

Core net sales are consistent with net sales by reportable segment.  Net sales by reportable segment are presented below (in millions):

	Three months ended				%	Nine months ended				%
	September 30,				change	September 30,				change
	2018		2017		18 vs. 17	2018		2017		18 vs. 17
Display Technologies	$	852	$	795	7%	$	2,377	$	2,354	1%
Optical Communications		1,117		917	22%		3,026		2,617	16%
Specialty Materials		459		373	23%		1,080		1,010	7%
Environmental Technologies		331		277	19%		970		815	19%
Life Sciences		231		223	4%		708		654	8%
All Other		55		50	10%		156		133	17%
Total core net sales	$	3,045	$	2,635	16%	$	8,317	$	7,583	10%

Core Equity in Earnings of Affiliated Companies

The following provides a summary of core equity in earnings of affiliated companies (in millions):

	Three months ended				Nine months ended
	September 30,				September 30,
	2018		2017		2018		2017
Hemlock Semiconductor Group	$	28	$	29	$	82	$	67
All other		4		3		7		11
Total core equity earnings	$	32	$	32	$	89	$	78

Core Earnings

In the three months ended September 30, 2018, we generated core earnings of $476 million, or $0.51 per share, compared to core earnings generated in the three months ended September 30, 2017 of $403 million, or $0.40 per share.  The increase of $73 million was primarily due to the following items:

· An increase in the Display Technologies segment of $7 million, primarily resulting from increased sales of $57 million offset by capacity expansion costs China;

· An increase in the Optical Communications segment of $36 million, driven by higher sales of carrier and enterprise network products;

· An increase of $30million in the Specialty Materials segment driven by higher sales of Gorilla Glass;

· An increase in the Environmental Technologies segment of $20 million resulting from sales growth across all product lines;  

· An increase of $5 million in the Life Sciences segment resulting from increased sales in all product categories, as well as improved manufacturing efficiencies; and

· A decrease of $8 million in the All Other segment resulting from increased investment in development projects.

© 2018 Corning Incorporated. All Rights Reserved.

32

In the nine months ended September 30, 2018, we generated core earnings of $1,134 million, or $1.20 per share, compared to core earnings of $1,179 million or $1.14 per share.  The decrease of $45 million was driven by the following items:

· A decrease in the Display Technologies segment of $87 million, driven by glass price declines and expansion costs in China, more than offsetting increases in glass volume;

· Lower core earnings in our All Other segment, down $38 million due to increased investment in development projects for emerging businesses; 

· An increase in the Optical Communications segment of $57 million, driven by higher sales of carrier and enterprise network products, partially offset by spending for capacity expansion;

· An increase in the Environmental Technologies segment of $44 million resulting from sales growth across all product lines;  

· An increase of $17 million in the Life Sciences segment resulting from increased sales in all product categories, as well as improved manufacturing efficiencies; and

· An increase of $13million in the Specialty Materials segment driven by strong demand for Gorilla Glass.

Included in core earnings for the three and nine months ended September 30, 2018 and 2017 is net periodic pension expense in the amounts of $13 million and $38 million, respectively, and $12 million and $37 million, respectively.

Refer to Note 10 (Employee Retirement Plans) to the Consolidated Financial Statements for additional information.

Core Earnings per Common Share

The following table sets forth the computation of core basic and core diluted earnings per common share (in millions, except per share amounts):

	Three months ended				Nine months ended
	September 30,				September 30,
	2018		2017		2018		2017
Core earnings attributable to Corning Incorporated	$	476	$	403	$	1,134	$	1,179
Less:  Series A convertible preferred stock dividend		24		24		73		73
Core earnings available to common stockholders - basic		452		379		1,061		1,106
Add:  Series A convertible preferred stock dividend		24		24		73		73
Core earnings available to common stockholders - diluted	$	476	$	403	$	1,134	$	1,179
Weighted-average common shares outstanding - basic		805		883		824		905
Effect of dilutive securities:
Stock options and other dilutive securities		10		11		9		11
Series A convertible preferred stock		115		115		115		115
Weighted-average common shares outstanding - diluted		930		1,009		948		1,031
Core basic earnings per common share	$	0.56	$	0.43	$	1.29	$	1.22
Core diluted earnings per common share	$	0.51	$	0.40	$	1.20	$	1.14

Reconciliation of Non-GAAP Measures

We utilize certain financial measures and key performance indicators that are not calculated in accordance with GAAP to assess our financial and operating performance.  A non-GAAP financial measure is defined as a numerical measure of a company’s financial performance that (i) excludes amounts, or is subject to adjustments that have the effect of excluding amounts, that are included in the comparable measure calculated and presented in accordance with GAAP in the statement of income or statement of cash flows, or (ii) includes amounts, or is subject to adjustments that have the effect of including amounts, that are excluded from the comparable measure as calculated and presented in accordance with GAAP in the statement of income or statement of cash flows.

Core net sales, core equity in earnings of affiliated companies and core earnings are non-GAAP financial measures utilized by our management to analyze financial performance without the impact of items that are driven by general economic conditions and events that do not reflect the underlying fundamentals and trends in the Company’s operations.

© 2018 Corning Incorporated. All Rights Reserved.

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The following tables reconcile our non-GAAP financial measures to their most directly comparable GAAP financial measure (amounts in millions except percentages and per share amounts):

	Three Months Ended September 30, 2018
					Income before				Effective
	Net		Equity		income		Net		tax		Per
	sales		earnings		taxes		income		rate (a)		share
As reported - GAAP	$	3,008	$	32	$	758	$	625	17.5%	$	0.67
Constant-currency adjustment (1)		37				42		46			0.05
Translation gain on Japanese yen-denominated   debt (2)						(30)		(23)			(0.02)
Translated earnings contract gain (3)						(232)		(171)			(0.18)
Acquisition-related costs (4)						37		29			0.03
Discrete tax items and other tax-related   adjustments (5)								(40)			(0.04)
Litigation, regulatory and other legal matters (6)						11		8			0.01
Restructuring, impairment and other charges (7)						9		2
Core performance measures	$	3,045	$	32	$	595	$	476	20.0%	$	0.51

(a) Based upon statutory tax rates in the specific jurisdiction for each event.

See Part 1, Item 2.  Management’s Discussion and Analysis of Financial Condition and Results of Operations, Results of Operations – Core Performance Measures, Reconciliation of Non-GAAP Measures, “Items which we exclude from GAAP measures to arrive at core performance measures” for the descriptions of the footnoted reconciling items.

	Three Months Ended September 30, 2017
					Income
					before				Effective
	Net		Equity		income			Net	tax		Per
	sales		earnings		taxes		income		rate (a)		share
As reported - GAAP	$	2,607	$	31	$	479	$	390	18.6%	$	0.39
Constant-currency adjustment (1)		28		1		34		28			0.03
Translation gain on Japanese yen-denominated   debt (2)						(14)		(9)			(0.01)
Translated earnings contract gain (3)						(28)		(18)			(0.02)
Acquisition-related costs (4)						21		14			0.01
Discrete tax items and other tax-related   adjustments (5)								(2)
Core performance measures	$	2,635	$	32	$	492	$	403	18.1%	$	0.40

(a) Based upon statutory tax rates in the specific jurisdiction for each event.

See Part 1, Item 2.  Management’s Discussion and Analysis of Financial Condition and Results of Operations, Results of Operations – Core Performance Measures, Reconciliation of Non-GAAP Measures, “Items which we exclude from GAAP measures to arrive at core performance measures” for the descriptions of the footnoted reconciling items.

© 2018 Corning Incorporated. All Rights Reserved.

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	Nine Months Ended September 30, 2018
					Income
					before				Effective
	Net		Equity		income		Net		tax		Per
	sales		earnings		taxes		income		rate (a)		share
As reported – GAAP	$	8,255	$	102	$	1,157	$	774	33.1%	$	0.82
Constant-currency adjustment (1)		62		1		110		114			0.12
Translation gain on Japanese yen-denominated   debt (2)						(28)		(21)			(0.02)
Translated earnings contract gain (3)						(85)		(50)			(0.05)
Acquisition-related costs (4)						95		74			0.08
Discrete tax items and other tax-related   adjustments (5)								103			0.11
Litigation, regulatory and other legal matters (6)						143		111			0.12
Restructuring, impairment and other charges (7)						58		40			0.04
Equity in earnings of affiliated companies (8)				(14)		(14)		(12)			(0.01)
Pension mark-to-market adjustment (10)						1		1
Core performance measures	$	8,317	$	89	$	1,437	$	1,134	21.1%	$	1.20

(a) Based upon statutory tax rates in the specific jurisdiction for each event.

See Part 1, Item 2.  Management’s Discussion and Analysis of Financial Condition and Results of Operations, Results of Operations – Core Performance Measures, Reconciliation of Non-GAAP Measures, “Items which we exclude from GAAP measures to arrive at core performance measures” for the descriptions of the footnoted reconciling items.

	Nine Months Ended September 30, 2017
					Income
					before				Effective
	Net		Equity		income		Net		tax		Per
	sales		earnings		taxes		income		rate (a)		share
As reported - GAAP	$	7,479	$	148	$	1,091	$	915	16.1%	$	0.89
Constant-currency adjustment (1)		104		2		124		94			0.08
Translation gain on Japanese yen-denominated   debt (2)						(14)		(9)			(0.01)
Translated earnings contract loss (3)						198		124			0.12
Acquisition-related costs (4)						60		41			0.04
Discrete tax items and other tax-related   adjustments (5)								28			0.03
Litigation, regulatory and other legal matters (6)						(12)		(9)			(0.01)
Restructuring, impairment and other charges (7)						50		35			0.03
Equity in earnings of affiliated companies (8)				(72)		(72)		(46)			(0.04)
Adjustments related to acquisitions (9)						(5)		(3)
Pension mark-to-market adjustment (10)						15		9			0.01
Core performance measures	$	7,583	$	78	$	1,435	$	1,179	17.8%	$	1.14

(a) Based upon statutory tax rates in the specific jurisdiction for each event.

See Part 1, Item 2.  Management’s Discussion and Analysis of Financial Condition and Results of Operations, Results of Operations – Core Performance Measures, Reconciliation of Non-GAAP Measures, “Items which we exclude from GAAP measures to arrive at core performance measures” for the descriptions of the footnoted reconciling items.

© 2018 Corning Incorporated. All Rights Reserved.

35

Items which we exclude from GAAP measures to arrive at core performance measures are as follows:

(1)	Constant-currency adjustments:  Because a significant portion of Display Technologies segment revenues are denominated in Japanese yen, and a significant portion of Display Technologies and Specialty Materials segment manufacturing costs are denominated in Japanese Yen, Korean won, New Taiwan dollar and Chinese yuan, management believes it is important to understand the impact on core earnings of translating these currencies into U.S. dollars.  Presenting results on a constant-currency basis mitigates their translation impact and allows management to evaluate performance period over period, analyze underlying trends in our businesses, and establish operational goals and forecasts.
	Constant-yen:  As of January 1, 2018, we use an internally derived management rate of ¥107, which is closely aligned to our current yen portfolio of foreign currency hedges, and have recast all periods presented based on this rate in order to effectively remove the impact of changes in the Japanese yen.
	Constant-won:  As of January 1, 2018, we use an internally derived management rate of ₩1,175, which is closely aligned to our current won portfolio of foreign currency hedges, and have recast all periods presented based on this rate.
	Constant-yuan:  In January 2018, we began presenting results of the Display Technologies and Specialty Materials segments on a constant-yuan basis to mitigate the translation impact of this currency on these segments.  We use an internally derived management rate of yuan 6.7, which is closely aligned to our current yuan portfolio of foreign currency hedges and consistent with historical prior period averages.
	Constant-Taiwan dollar:  In January 2018, we began presenting results of the Display Technologies and Specialty Materials segments on a constant-Taiwan dollar basis to mitigate the translation impact of this currency on these segments.  We use an internally derived management rate of New Taiwan dollar 31, which is closely aligned to our current New Taiwan dollar portfolio of cash flow hedges, and approximates the 10-year historical average of the currency.
(2)	Translation (gain) loss on Japanese yen-denominated debt:  We have excluded the gain or loss on the translation of our yen-denominated debt to U.S. dollars.
(3)	Translated earnings contract (gain) loss:  We have excluded the impact of the realized and unrealized gains and losses of our Japanese yen, South Korean won, Chinese yuan and New Taiwan dollar-denominated foreign currency hedges related to translated earnings, as well as the unrealized gains and losses of our euro and British pound-denominated foreign currency hedges related to translated earnings.
(4)	Acquisition-related costs:  These expenses include intangible amortization, inventory valuation adjustments and external acquisition-related deal costs.
(5)	Discrete tax items and other tax-related adjustments:  For 2018, this amount primarily relates to the preliminary IRS audit settlement.  For 2017, this amount represents the removal of discrete adjustments (e.g., changes in tax law and changes in judgment about the realizability of certain deferred tax assets) as well as other non-operational tax-related adjustments.
(6)	Litigation, regulatory and other legal matters:  Includes amounts that reflect developments in commercial litigation, intellectual property disputes and other legal matters.
(7)	Restructuring, impairment and other charges:  This amount includes restructuring, impairment and other charges, as well as other expenses which are not related to continuing operations and are not classified as restructuring expense.
(8)	Equity in earnings of affiliated companies:  These adjustments relate to costs not related to continuing operations of our affiliated companies, such as restructuring, impairment and other charges and settlements under “take-or-pay” contracts.
(9)	Adjustments related to acquisitions:  Includes fair value adjustments to the Corning Precision Materials indemnity asset related to contingent consideration, post-combination expenses and other acquisition and disposal adjustments.
(10)	Pension mark-to-market adjustment:  Defined benefit pension mark-to-market gains and losses, which arise from changes in actuarial assumptions and the difference between actual and expected returns on plan assets and discount rates.

© 2018 Corning Incorporated. All Rights Reserved.

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REPORTABLE SEGMENTS

Our reportable segments are as follows:

· Display Technologies – manufactures glass substrates primarily for flat panel displays.

· Optical Communications – manufactures carrier and enterprise network components for the telecommunications industry.

· Specialty Materials – manufactures products that provide more than 150 material formulations for glass, glass ceramics and fluoride crystals to meet demand for unique customer needs.

· Environmental Technologies – manufactures ceramic substrates and filters for automotive and diesel emission control applications. 

· Life Sciences – manufactures glass and plastic labware, equipment, media and reagents enabling workflow solutions for scientific applications.

All other segments that do not meet the quantitative threshold for separate reporting have been grouped as “All Other.”  This group is primarily comprised of the results of the pharmaceutical technologies business and new product lines and development projects, as well as certain corporate investments such as Eurokera and Keraglass equity affiliates. 

Effective beginning in the first quarter of 2018, the Company has changed its measurement of segment sales and segment net income, and has recast prior periods presented based on the new methodology.  Included in this new measurement is a change in our segment tax rate to 21% to better reflect our new corporate tax rate under U.S. tax reform  Additionally, the impact of changes in the Japanese yen, Korean won, Chinese yuan and New Taiwan dollar will be excluded from segment sales and segment net income for the Display Technologies and Specialty Materials segments, and certain income and expenses that were previously allocated to our segments are now included in the unallocated amounts in the reconciliation of reportable segment net income to consolidated net income.  These include items that are not used by our chief operating decision maker (“CODM”) in evaluating the results of or in allocating resources to our segments and include the following items:  the impact of our translated earnings contracts; acquisition-related costs; discrete tax items and other tax-related adjustments; litigation, regulatory and other legal matters; restructuring, impairment and other charges; adjustments relating to acquisitions; and other non-recurring non-operational items.  Although we exclude these amounts from segment results, they are included in reported consolidated results.

We prepared the financial results for our reportable segments on a basis that is consistent with the manner in which we internally disaggregate financial information to assist the CODM in making internal operating decisions.  We included the earnings of equity affiliates that are closely associated with our reportable segments in the respective segment’s net income.  We have allocated certain common expenses among reportable segments differently than we would for stand-alone financial information.  Segment net income may not be consistent with measures used by other companies. 

Display Technologies

The following table provides net sales and net income for the Display Technologies segment (in millions):

	Three months ended				%	Nine months ended				%
	September 30,				change	September 30,				change
	2018		2017		18 vs. 17	2018		2017		18 vs. 17
Segment net sales	$	852	$	795	7%	$	2,377	$	2,354	1%
Segment net income	$	218	$	211	3%	$	595	$	682	(13%)

Net sales in the Display Technologies segment increased by $57and $23 million, respectively,in the three and nine months ended September 30, 2018, driven by glass volumegrowth in the low-teens and high-single digits in percentage terms. Volume growth more than offset price declines in the mid-single digits and high-single digits in percentage terms,  for the three and nine months ended September 30, 2018, respectively.  Capacity expansion in China is supporting the increase in volume.

Net income in the Display Technologies segment increased by $7 million in the three months ended September 30, 2018, for the reasons outlined in the above paragraph.  Net income decreased by $87 million in the nine months ended September 30, 2018 driven by expansion costs and price declines more than offsetting increases in glass volume.

Outlook:

For the fourth quarter, display glass market volume is expected to grow by a low-single-digit percentage sequentially.  Display Technologies sales volumes are expected to grow faster than the market, driven by the Gen 10.5 ramp up in China. Fourth-quarter sequential glass price declines are expected to be even more moderate than the third quarter.

© 2018 Corning Incorporated. All Rights Reserved.

37

Optical Communications

The following table provides net sales and net income for the Optical Communications segment (in millions):

	Three months ended				%	Nine months ended				%
	September 30,				change	September 30,				change
	2018		2017		18 vs. 17	2018		2017		18 vs. 17
Segment net sales	$	1,117	$	917	22%	$	3,026	$	2,617	16%
Segment net income	$	168	$	132	27%	$	427	$	370	15%

Net sales in the Optical Communications segment increased by $200 million, or 22%, and $409 million, or 16%, for the three and nine months ended September 30, 2018, respectively.  Higher sales of carrier products, up $107 million and $251 million, and enterprise network products, up $93 million and $158 million, respectively, drove the increase.  Strong growth in the North American and European fiber-to-the-home and access markets drove the sales increase in carrier network products and growth in data centers drove the increase in enterprise sales.  The acquisition of 3M’s Communications Market Divisionalso contributed to sales growth.

Net income increased by $36 million, or 27%, and $57 million, or 15%, for the three and nine months ended September 30, 2018.  The increase was driven by the increase in sales.  For the nine months ended September 30, 2018, volume gains were partially offset by costs associated with our planned capacity expansions and lower sales prices.

Outlook:

In the fourth quarter, Optical Communications sales are expected to increaseby a low-single digit percentage sequentially, resulting in year-over-year growth slightly better than the third quarter.

Specialty Materials

The following table provides net sales and net income for the Specialty Materials segment (in millions):

	Three months ended				%	Nine months ended				%
	September 30,				change	September 30,				change
	2018		2017		18 vs. 17	2018		2017		18 vs. 17
Segment net sales	$	459	$	373	23%	$	1,080	$	1,010	7%
Segment net income	$	116	$	86	35%	$	226	$	213	6%

Net sales in the Specialty Materials segment increased by $86 million, or 23%, and $70 million, or 7%, for the three and nine months ended September 30, 2018, driven primarily by increased Gorilla Glass sales.  Net income increased by $30 million, or 35%, and $13 million, or 6% for the three and nine months ended September 30, 2018, primarily driven by the increase in sales and lower manufacturing costs.

Outlook: 

In the fourth quarter of 2018, Specialty Materials sales are expected to be comparable to the fourth quarter of 2017 which was Specialty Materials’ highest sales quarter in 2017.

Environmental Technologies

The following table provides net sales and net income for the Environmental Technologies segment (in millions): 

	Three months ended				%	Nine months ended				%
	September 30,				change	September 30,				change
	2018		2017		18 vs. 17	2018		2017		18 vs. 17
Segment net sales	$	331	$	277	19%	$	970	$	815	19%
Segment net income	$	60	$	40	50%	$	166	$	122	36%

Net sales in the Environmental Technologies segment increased $54 million, or 19%, and $155 million, or 19%, for the three and ninemonths ended September 30, 2018, respectively.  Automotive product sales increased $20 million and $72 million for the three and nine months ended September 30, 2018, due to global market strength and continued sales growth of gas particulate filters.  Diesel product sales increased $34 million and $83 million for the three and nine months ended September 30, 2018, respectively.  The increases were driven by higher demand for heavy-duty diesel products in North America and Europe.  Movements in foreign exchange rates were not material when compared to the corresponding three-month period in 2017.  The year to date impact is $29 million when compared to the corresponding nine-month period in 2017.

© 2018 Corning Incorporated. All Rights Reserved.

38

Net income increased by $20million, or 50%, and $44 million, or 36%, for the three and nine months ended September 30, 2018, respectively.  The increase was driven by the sales increase outlined above and improved manufacturing efficiencies.  Movements in foreign exchange rates had an immaterial effect on net income when compared to the three months ended September 2017, and impacted net income by $4 million when compared to the corresponding nine-month period in 2017.

Outlook:  

Fourth quarter sales are expected to increase by a high-single digit percentage on a year-over-year basis.

Life Sciences

The following table provides net sales and net income for the Life Sciences segment (in millions):

	Three months ended				%	Nine months ended				%
	September 30,				change	September 30,				change
	2018		2017		18 vs. 17	2018		2017		18 vs. 17
Segment net sales	$	231	$	223	4%	$	708	$	654	8%
Segment net income	$	30	$	25	20%	$	88	$	71	24%

Net sales in the Life Sciences segment increased by $8 million, or 4%, and $54 million, or 8%, for the three and nine months ended September 30, 2018, respectively, driven by higher sales across all product categories.  Movements in foreign exchange rates reduced net sales $2 million and increased net sales $12 million in the three and nine months ended September 30, 2018 when compared to the same period in 2017.

Net income increased by $5million, or 20%, and $17 million, or 24%, for the three and nine months ended September 30, 2018, respectively, driven by the increase in sales described above and improved manufacturing efficiencies.  Movements in foreign exchange rates were not material when compared to the corresponding three-month and nine-month periods in 2017. 

Outlook:  

Fourth quarter sales are expected to increase by a low-to-mid-single digit percentage on a year-over-year basis. 

All Other

All other segments that do not meet the quantitative threshold for separate reporting have been grouped as “All Other.”  This group is primarily comprised of the results of the pharmaceutical technologies business and new product lines and development projects, as well as certain corporate investments such as Eurokera and Keraglass equity affiliates. 

The following table provides net sales and other data for All Other (in millions):

	Three months ended				%	Nine months ended				%
	September 30,				change	September 30,				change
	2018		2017		18 vs. 17	2018		2017		18 vs. 17
Segment net sales	$	55	$	50	10%	$	156	$	133	17%
Segment net income	$	(72)	$	(64)	13%	$	(224)	$	(186)	20%

Net sales of this segment increased by $5 million, or 10%, and $23 million, 17%, for the three and nine months ended September 30, 2018, when compared to the same period in 2017, driven primarily by an increase in sales in our emerging businesses.  The increase in the net loss of $8 million, or 13%, and $38 million, or 20%, reflects increased spending in our development projects when compared to the corresponding three and nine months ended September 30, 2017.

CAPITAL RESOURCES AND LIQUIDITY

Financing and Capital Resources

The following items impacted Corning’s financing and capital structure in the nine months ended September 30, 2018 and 2017:

2018

In the second quarter of 2018, Corning issued ¥65.5 billion Japanese yen-denominated debt securities in tranches of 7, 10 and 12 years. The proceeds from these notes were received in Japanese yen and immediately converted to U.S. dollars on the date of issuance. The net proceeds received in U.S. dollars, after deducting offering expenses, was $596 million.  Payments of principal and interest on the notes will be in Japanese yen, or should yen be unavailable due to circumstances beyond Corning’s control, a U.S. dollar equivalent. 

© 2018 Corning Incorporated. All Rights Reserved.

39

In the third quarter of 2018, Corning amended and restated its revolving credit agreement (the “Revolving Credit Agreement”).  The Revolving Credit Agreement provides a $1.5 billion unsecured multi-currency line of credit and expires August 15, 2023.  The Revolving Credit Agreement includes affirmative and negative covenants with which Corning must comply, including a leverage (debt to capital ratio) financial covenant.  The required leverage ratio is a maximum of 60%. 

2017

There were no significant items that impacted Corning’s financing structure in the nine months ended September 30, 2017.

Share Repurchase Program

During 2017, Corning repurchased 84.4 million shares for approximately $2.4 billion through accelerated share repurchase agreements and open market repurchases under the 2016 Repurchase Program.

On April 26, 2018, Corning’s Board of Directors approved a $2 billion share repurchase program with no expiration (the “2018 Repurchase Program”). During the three and nine months ended September 30, 2018, the Company repurchased 11.8 million and 63.4 million shares of common stock on the open market for approximately $384 million and $1.9 billion, respectively, as part of its 2016 and 2018 Repurchase Programs.

Refer to Note 14 (Shareholders’ Equity) for additional information.

Capital Spending

Capital spending totaled $1.6 billion and $1.2 billion in the nine months ended September 30, 2018 and 2017, respectively.  We expect our 2018 capital expenditures to be slightly more than $2.0 billion, driven by expansions related to the Gen 10.5 glass manufacturing facility, the addition of capacity to support the new gas-particulate filters business in the Environmental Technologies segment and investment to support growth in customer demand in the Optical Communications and Specialty Materials segments.

Cash Flow

Summary of cash flow data (in millions):

	Nine months ended
	September 30,
	2018		2017
Net cash provided by operating activities	$	1,978	$	1,116
Net cash used in investing activities	$	(2,266)	$	(1,218)
Net cash used in financing activities	$	(2,116)	$	(1,595)

Net cash provided by operating activities increased by $862 million in the nine months ended September 30, 2018 when compared to the same period last year, primarily driven by customer deposits received of $691 million and the positive impact of changes in working capital of $214 million.

Net cash used in investing activities increased by $1billion in the nine months ended September 30, 2018 when compared to the same period last year, driven by the cash outflow of $794 million for the acquisition of 3M’s Communications Market Division, an increase of $382 million in capital expenditures largely due to capacity expansion projects in our Display Technologies, Optical Communications and Environmental Technologies segments and a decrease of $137 million in realized gains on translated earnings contracts.  Cash received of $196 million, which represents the original fair value of the contingent consideration asset related to the acquisition of Samsung Corning Precision Materials (see Note 13), partially offset the net cash used in investing activities.

Net cash used in financing activities in the nine months ended September 30, 2018 increased by $521 million when compared to the same period last year, driven by an increase in debt repayments of $375 million and decreases of $201 million and $106 million in proceeds received from the exercise of stock options and the issuance of debt, respectively.  A decrease of $184 million in share repurchases partially offset the negative cash impact of these items.

© 2018 Corning Incorporated. All Rights Reserved.

40

Key Balance Sheet Data

Balance sheet and working capital measures are provided in the following table (in millions):

	As of		As of
	September 30,		December 31,
	2018		2017
Working capital	$	3,520	$	5,618
Current ratio		2.1:1		2.8:1
Trade accounts receivable, net of allowances	$	1,973	$	1,807
Days sales outstanding		59		62
Inventories	$	1,921	$	1,712
Inventory turns		3.6		3.7
Days payable outstanding (1)		44		51
Long-term debt (excluding current portion)	$	5,056	$	4,749
Total debt to total capital		28%		25%

(1) Includes trade payables only.

Credit Rating

Our credit ratings remain the same as those disclosed in our 2017 Form 10-K.

	Rating	Outlook
RATING AGENCY	Long-Term Debt	last update
Standard & Poor’s	BBB+	Stable
		October 27, 2015
Moody’s	Baa1	Stable
		October 28, 2015

Management Assessment of Liquidity

We ended the first three quarters of 2018 with approximately $1.9 billion of cash and cash equivalents.  Our cash and cash equivalents are held in various locations throughout the world, with approximately 72% held outside of the United States, and are generally unrestricted.  We utilize a variety of financing strategies to ensure that our worldwide cash is available in the locations in which it is needed. In the first three quarters of 2018, the Company distributed approximately $2.2 billion from its foreign subsidiaries to the U.S. parent of those subsidiaries.  There were no incremental taxes beyond the Toll Charge due with the respect to this distribution of cash. 

To manage interest rate exposure, the Company, from time to time, enters into interest rate swap agreements.  We are currently party to two interest rate swaps that are designated as fair value hedges and economically exchange a notional amount of $550 million of previously issued fixed rate long-term debt to floating rate debt.  Under the terms of the swap agreements, we pay the counterparty a floating rate that is indexed to the one-month LIBOR rate.  In addition, the company has entered into $300 million of treasury lock agreements to economically fix the benchmark interest rate associated with future debt issuances. This hedge is designated as a cash flow hedge.

Corning also has a commercial paper program pursuant to which we may issue short-term, unsecured commercial paper notes up to a maximum aggregate principal amount outstanding at any one time of $1.5 billion.  Under this program, the Company may issue the paper from time to time and will use the proceeds for general corporate purposes.  The Company’s Revolving Credit Agreement is available to support obligations under the commercial paper program, if needed.  At September 30, 2018 and December 31, 2017 Corning did not have outstanding commercial paper.

Other

We complete comprehensive reviews of our significant customers and their creditworthiness by analyzing their financial strength at least annually or more frequently for customers where we have identified a measure of increased risk.  We closely monitor payments and developments which may signal possible customer credit issues.  We currently have not identified any potential material impact on our liquidity resulting from customer credit issues.

Our major source of funding for 2018 and beyond will be our operating cash flow, our existing balances of cash and cash equivalents and proceeds from any issuances of debt.  We believe we have sufficient liquidity to fund operations, acquisitions, capital expenditures, scheduled debt repayments, dividend payments and share repurchase programs.

© 2018 Corning Incorporated. All Rights Reserved.

41

Our Revolving Credit Agreement includes affirmative and negative covenants with which we must comply, including a leverage (debt to capital ratio) financial covenant.  The required leverage ratio is a maximum of 60%.  At September 30, 2018, our leverage using this measure was approximately 28%. As of September 30, 2018, we were in compliance with the terms of the Revolving Credit Agreement.

Our debt instruments contain customary event of default provisions, which allow the lenders the option of accelerating all obligations upon the occurrence of certain events.  In addition, some of our debt instruments contain a cross default provision, whereby an uncured default in excess of a specified amount on one debt obligation of the Company, also would be considered a default under the terms of another debt instrument.As of September 30, 2018, we were in compliance with all such provisions.

Management is not aware of any known trends or any known demands, commitments, events or uncertainties that will result in or that are reasonably likely to result in a material decrease in our liquidity.  In addition, other than items discussed, there are no known material trends, favorable or unfavorable, in our capital resources and no expected material changes in the mix and relative cost of such resources.

Off Balance Sheet Arrangements

There have been no material changes outside the ordinary course of business in our off balance sheet arrangements as disclosed in our 2017 Form 10-K under the caption “Off Balance Sheet Arrangements.”

Contractual Obligations

There have been no material changes outside the ordinary course of business in the contractual obligations disclosed in our 2017 Form 10-K under the caption “Contractual Obligations.”

CRITICAL ACCOUNTING ESTIMATES

The preparation of financial statements requires management to make estimates and assumptions that affect amounts reported therein.  The estimates that require management’s most difficult, subjective or complex judgments are described in our 2017 Form 10-K and remain unchanged through the first nine months of 2018.  For certain items, additional details are provided below.

Impairment of Assets Held for Use

We are required to assess the recoverability of the carrying value of long-lived assets when an indicator of impairment has been identified.  We review our long-lived assets in each quarter in which impairment indicators are present.  We must exercise judgment in assessing whether an event of impairment has occurred.

Manufacturing equipment includes certain components of production equipment that are constructed of precious metals, primarily platinum and rhodium.  These metals are not depreciated because they have very low physical losses and are repeatedly reclaimed and reused in our manufacturing process and have a very long useful life.  Precious metals are reviewed for impairment as part of our assessment of long-lived assets.  This review considers all of the Company’s precious metals that are either in place in the production process; in reclamation, fabrication, or refinement in anticipation of re-use; or awaiting use to support increased capacity.  Precious metals are only acquired to support our manufacturing operations and are not held for trading or other purposes.

At September 30, 2018 and December 31, 2017, the carrying value of precious metals was higher than the fair market value by $624 million and $711 million, respectively.  These precious metals are utilized by the Display Technologies and Specialty Materials segments.  Corning believes these precious metal assets to be recoverable due to the significant positive cash flow in both segments.  The potential for impairment exists in the future if negative events significantly decrease the cash flow of these segments.  Such events include, but are not limited to, a significant decrease in demand for products or a significant decrease in profitability in our Display Technologies or Specialty Materials segments.

NEW ACCOUNTING STANDARDS

Refer to Note 1 (Significant Accounting Policies) to the Consolidated Financial Statements.

© 2018 Corning Incorporated. All Rights Reserved.

42

ENVIRONMENT

Corning has been named by the Environmental Protection Agency (“the Agency”) under the Superfund Act, or by state governments under similar state laws, as a potentially responsible party for 15 active hazardous waste sites.  Under the Superfund Act, all parties who may have contributed any waste to a hazardous waste site, identified by the Agency, are jointly and severally liable for the cost of cleanup unless the Agency agrees otherwise.  It is Corning’s policy to accrue for its estimated liability related to Superfund sites and other environmental liabilities related to property owned by Corning based on expert analysis and continual monitoring by both internal and external consultants.  At September 30, 2018 and December 31, 2017, Corning had accrued approximately $33 million and $38 million, respectively, (undiscounted) for the estimated liability for environmental cleanup and related litigation.  Based upon the information developed to date, management believes that the accrued reserve is a reasonable estimate of the Company’s liability and that the risk of an additional loss in an amount materially higher than that accrued is remote.

FORWARD-LOOKING STATEMENTS

The statements in this Quarterly Report on Form 10-Q, in reports subsequently filed by Corning with the Securities and Exchange Commission (“SEC”) on Forms 8-K, and related comments by management that are not historical facts or information and contain words such as “will,” “believe,” “anticipate,” “expect,” “intend,” “plan,” “seek,” “see,” “would,” and “target” and similar expressions are forward-looking statements.  Such statements relate to future events that by their nature address matters that are, to different degrees, uncertain.  These forward-looking statements relate to, among other things, the company’s future operating performance, the company's share of new and existing markets, the company's revenue and earnings growth rates, the company’s ability to innovate and commercialize new products, and the company’s implementation of cost-reduction initiatives and measures to improve pricing, including the optimization of the company’s manufacturing capacity.

Although the company believes that these forward-looking statements are based upon reasonable assumptions regarding, among other things, current estimates and forecasts, general economic conditions, its knowledge of its business, and key performance indicators that impact the company, actual results could differ materially.   The company does not undertake to update forward-looking statements.  Some of the risks, uncertainties and other factors that could cause actual results to differ materially from those expressed in or implied by the forward-looking statements include, but are not limited to:

- the effects of acquisitions, dispositions and other similar transactions;

- global business, financial, economic and political conditions;

- tariffs and import duties;

- currency fluctuations between the U.S. dollar and other currencies, primarily the Japanese yen, New Taiwan dollar, euro, Chinese yuan and South Korean won;

- product demand and industry capacity;

- competitive products and pricing;

- availability and costs of critical components and materials;

- new product development and commercialization;

- order activity and demand from major customers;

- the amount and timing of our cash flows and earnings and other conditions, which may affect our ability to pay our quarterly dividend at the planned level or to repurchase shares at planned levels;

- possible disruption in commercial activities due to terrorist activity, cyber-attack, armed conflict, political or financial instability, natural disasters, or major health concerns;

- unanticipated disruption to equipment, facilities, IT systems or operations;

- effect of regulatory and legal developments;

- ability to pace capital spending to anticipated levels of customer demand;

- rate of technology change;

- ability to enforce patents and protect intellectual property and trade secrets;

- adverse litigation;

- product and components performance issues;

- retention of key personnel;

- customer ability, most notably in the Display Technologies segment, to maintain profitable operations and obtain financing to fund their ongoing operations and manufacturing expansions and pay their receivables when due;

- loss of significant customers;

- changes in tax laws and regulations, including the 2017 Tax Act;

- the potential impact of legislation, government regulations, and other government action and investigations; and

- other risks detailed in Corning’s SEC filings.

© 2018 Corning Incorporated. All Rights Reserved.

43

ITEM 3.  QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK

Market Risk Disclosures

As noted in our 2017 Form 10-K, we operate and conduct business in many foreign countries and as a result are exposed to fluctuations between the U.S. dollar and other currencies.  Volatility in the global financial markets could increase the volatility of foreign currency exchange rates which would, in turn, impact our sales and net income.  For a discussion of our exposure to market risk and how we mitigate that risk, refer to Part II, Item 1A, Risk Factors in this Quarterly Report on Form 10-Q and Part II, Item 7A, Quantitative and Qualitative Disclosures About Market Risks, contained in our 2017 Form 10-K.

ITEM 4.  CONTROLS AND PROCEDURES

Under the supervision of and with the participation of Corning’s management, including our chief executive officer and chief financial officer, we evaluated the effectiveness of the design and operation of our disclosure controls and procedures (as such term is defined in Rules 13a-15(e) and 15d-15(e) under the Securities Exchange Act of 1934, as amended), as of September 30, 2018, the end of the period covered by this report.  Based on that evaluation, we have concluded that the Company’s disclosure controls and procedures were effective as of that date.  Corning’s disclosure controls and procedures include, without limitation, controls and procedures designed to ensure that information required to be disclosed by Corning in the reports that it files or submits under the Exchange Act is accumulated and communicated to Corning’s management, including Corning’s principal executive and principal financial officers, or other persons performing similar functions, as appropriate to allow timely decisions regarding required disclosure.

An evaluation of our internal controls over financial reporting was also performed to determine whether any changes have occurred during the period covered by this Report that have materially affected, or are reasonably likely to materially affect, our internal control over financial reporting.  The chief executive officer and chief financial officer concluded that there was no change in Corning’s internal control over financial reporting that materially affected, or is reasonably likely to materially affect, internal control over financial reporting.   

© 2018 Corning Incorporated. All Rights Reserved.

44

Part II – Other Information

ITEM 1.  LEGAL PROCEEDINGS

Environmental Litigation.See our 2017 Form 10-K, Part I, Item 3.  For additional information and updates to estimated liabilities as of September 30, 2018, see Part I, Item 1, Financial Statements, Note 3 (Commitments, Contingencies and Guarantees) of the Notes to Unaudited Consolidated Financial Statements included under Item 1 of this quarterly report, which is incorporated herein by reference.

ITEM 1A.  RISK FACTORS

In addition to other information set forth in this report, you should carefully consider the factors discussed in Part I, Item 1A. Risk Factors in our 2017 Form 10-K, which could materially impact our business, financial condition or future results.  Risks disclosed in our 2017 Form 10-K are not the only risks facing our Company.  Additional risks and uncertainties not currently known to us or that we currently deem immaterial may materially adversely impact our business, financial condition or operating results.  There have been no material changes to Part I, Item 1A. Risk Factors in our 2017 Form 10-K.

© 2018 Corning Incorporated. All Rights Reserved.

45

ITEM 2.  UNREGISTERED SALES OF EQUITY SECURITIES AND USE OF PROCEEDS

This table provides information about our purchases of our common stock during the third quarter of 2018:

Issuer Purchases of Equity Securities

				Number of	Approximate dollar
				shares purchased as	value of shares that
	Total number	Average		part of publicly	may yet be purchased
	of shares	price paid		announced plan	under the plans
Period	purchased (1)	per share		or program	or programs
July 1 - 31, 2018	3,166,122	$	29.30	3,122,185
August 1 - 31, 2018	4,615,377		33.18	4,613,813
September 1 - 30, 2018	4,056,692		34.29	4,056,300
Total	11,838,191	$	32.52	11,792,298	$	1,706,295,785

(1) This column reflects the following transactions during the third quarter of 2018:  (i) the deemed surrender to us of 1,621 shares of common stock to satisfy tax withholding obligations in connection with the vesting of employee restricted stock units; (ii) the surrender to us of 44,272 shares of common stock to satisfy tax withholding obligations in connection with the vesting of restricted stock issued to employees; and (iii) the purchase of 11,792,298 shares of common stock under the 2016 and 2018 Repurchase Programs.

© 2018 Corning Incorporated. All Rights Reserved.

46

ITEM 6.  EXHIBITS

(a)	Exhibits
	Exhibit Number	Exhibit Name
	31.1	Certification of Chief Executive Officer Pursuant to Rule 13a-14(a) under the Exchange Act
	31.2	Certification of Chief Financial Officer Pursuant to Rule 13a-14(a) under the Exchange Act
	32	Certification Pursuant to 18 U.S.C. Section 1350
	101.INS	XBRL Instance Document
	101.SCH	XBRL Taxonomy Extension Schema Document
	101.CAL	XBRL Taxonomy Calculation Linkbase Document
	101.LAB	XBRL Taxonomy Label Linkbase Document
	101.PRE	XBRL Taxonomy Presentation Linkbase Document
	101.DEF	XBRL Taxonomy Definition Document

© 2018 Corning Incorporated. All Rights Reserved.

47

SIGNATURES

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

	Corning Incorporated
	(Registrant)
October 24, 2018	/s/ Edward A. Schlesinger
Date	Edward A. Schlesinger
	Vice President and Corporate Controller

© 2018 Corning Incorporated. All Rights Reserved.

48

EX-31.1

Exhibit 31.1

CHIEF EXECUTIVE OFFICER CERTIFICATION

I, Wendell P. Weeks, certify that:

1. I have reviewed this Quarterly Report on Form 10-Q of Corning Incorporated (the registrant);

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.

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

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

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

October 24, 2018

/s/ Wendell P. Weeks

Wendell P. Weeks

Chairman, Chief Executive Officer and President

(Principal Executive Officer)

Corning Restricted - Special Control - Confidential under NDA (R3)

EX-31.2

Exhibit 31.2

CHIEF FINANCIAL OFFICER CERTIFICATION

I, R. Tony Tripeny, certify that:

1. I have reviewed this Quarterly Report on Form 10-Q of Corning Incorporated (the registrant);

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.

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

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

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

October 24, 2018

/s/ R. Tony Tripeny

R. Tony Tripeny

Senior Vice President and Chief Financial Officer

(Principal Financial Officer)

Corning Restricted - Special Control - Confidential under NDA (R3)

EX-32

Exhibit 32

CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350, AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the Quarterly Report of Corning Incorporated (the Company) on Form 10-Q for the period ended September 30, 2018 as filed with the Securities and Exchange Commission on the date hereof (the Report), we, Wendell P. Weeks, Chairman, Chief Executive Officer and President and R. Tony Tripeny, Senior Vice President and Chief Financial Officer, of the Company, certify, pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, 18 U.S.C. Section 1350, that:

(1) The Report fully complies with the requirements of section 13(a) or 15(d) of the Securities Exchange Act of 1934, as amended; and

(2) The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

Dated:  October 24, 2018

/s/ Wendell  P. Weeks

Wendell P. Weeks

Chairman, Chief Executive Officer and President

/s/ R. Tony Tripeny

R. Tony Tripeny

Senior Vice President and Chief Financial Officer

Corning Restricted - Special Control - Confidential under NDA (R3)

XML

Document And Entity Information - shares	9 Months Ended
	Sep. 30, 2018	Oct. 19, 2018
Document And Entity Information
Entity Registrant Name	CORNING INC /NY
Entity Central Index Key	0000024741
Trading Symbol	glw
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Document Type	10-Q
Document Period End Date	Sep. 30, 2018
Document Fiscal Year Focus	2018
Document Fiscal Period Focus	Q3
Amendment Flag	false
Entity Common Stock, Shares Outstanding		800,399,090

XML

Consolidated Statements of Income - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Consolidated Statements of Income [Abstract]
Net sales	$ 3,008	$ 2,607	$ 8,255	$ 7,479
Cost of sales	1,776	1,557	4,996	4,491
Gross margin	1,232	1,050	3,259	2,988
Operating expenses:
Selling, general and administrative expenses	439	375	1,352	1,072
Research, development and engineering expenses	244	215	728	623
Amortization of purchased intangibles	27	18	68	53
Operating income	522	442	1,111	1,240
Equity in earnings of affiliated companies	32	31	102	148
Interest income	7	10	29	33
Interest expense	(45)	(37)	(140)	(112)
Translated earnings contract gain (loss), net	230	26	66	(193)
Other income (expense), net	12	7	(11)	(25)
Income before income taxes	758	479	1,157	1,091
Provision for income taxes (Note 5)	(133)	(89)	(383)	(176)
Net income attributable to Corning Incorporated	$ 625	$ 390	$ 774	$ 915
Earnings per common share attributable to Corning Incorporated:
Basic (Note 6)	$ 0.75	$ 0.41	$ 0.85	$ 0.93
Diluted (Note 6)	0.67	0.39	0.82	0.89
Dividends declared per common share	$ 0.18	$ 0.155	$ 0.54	$ 0.465

XML

Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Consolidated Statements of Comprehensive Income [Abstract]
Net income attributable to Corning Incorporated	$ 625	$ 390	$ 774	$ 915
Foreign currency translation adjustments and other (Note 14)	(128)	53	(292)	457
Net unrealized (losses) gains on investments		(2)		14
Unamortized (losses) gains and prior service credits for postretirement benefit plans			(6)	17
Net unrealized gains on designated hedges	27	4	4	42
Other comprehensive (loss) income, net of tax	(101)	55	(294)	530
Comprehensive income attributable to Corning Incorporated	$ 524	$ 445	$ 480	$ 1,445

XML

Consolidated Balance Sheets - USD ($) $ in Millions	Sep. 30, 2018	Dec. 31, 2017
Current assets:
Cash and cash equivalents	$ 1,903	$ 4,317
Trade accounts receivable, net of doubtful accounts and allowances - $60 and $60	1,973	1,807
Inventories, net of inventory reserves - $173 and $169 (Note 7)	1,921	1,712
Other current assets	835	991
Total current assets	6,632	8,827
Investments	322	340
Property, plant and equipment, net of accumulated depreciation - $11,368 and $10,809	14,345	14,017
Goodwill, net (Note 9)	1,930	1,694
Other intangible assets, net (Note 9)	1,309	869
Deferred income taxes (Note 5)	831	813
Other assets	1,023	934
Total Assets	26,392	27,494
Current liabilities:
Current portion of long-term debt and short-term borrowings	252	379
Accounts payable	1,092	1,439
Other accrued liabilities (Note 3 and Note 11)	1,768	1,391
Total current liabilities	3,112	3,209
Long-term debt (Note 4)	5,056	4,749
Postretirement benefits other than pensions (Note 10)	701	749
Other liabilities (Note 3 and Note 11)	3,545	3,017
Total liabilities	12,414	11,724
Commitments, contingencies and guarantees (Note 3)
Shareholders’ equity (Note 14):
Convertible preferred stock, Series A – Par value $100 per share; Shares authorized 3,100; Shares issued: 2,300	2,300	2,300
Common stock – Par value $0.50 per share; Shares authorized 3.8 billion; Shares issued: 1.7 billion and 1.7 billion	856	854
Additional paid-in capital – common stock	14,201	14,089
Retained earnings	16,186	15,930
Treasury stock, at cost; Shares held: 914 million and 850 million	(18,517)	(16,633)
Accumulated other comprehensive loss	(1,136)	(842)
Total Corning Incorporated shareholders’ equity	13,890	15,698
Noncontrolling interests	88	72
Total equity	13,978	15,770
Total Liabilities and Equity	$ 26,392	$ 27,494

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Consolidated Balance Sheets (Parentheticals) - USD ($) $ in Millions	Sep. 30, 2018	Dec. 31, 2017
Consolidated Balance Sheets [Abstract]
Doubtful accounts and allowances	$ 60	$ 60
Inventory reserves	173	169
Accumulated depreciation	$ 11,368	$ 10,809
Convertible preferred stock, par value (in dollars per share)	$ 100	$ 100
Convertible preferred stock, shares authorized (in shares)	3,100	3,100
Convertible preferred stock, shares issued (in shares)	2,300	2,300
Common stock, par value (in dollars per share)	$ 0.50	$ 0.50
Common stock, shares authorized (in shares)	3,800,000,000	3,800,000,000
Common stock, shares issued (in shares)	1,700,000,000	1,700,000,000
Treasury stock, shares held (in shares)	914,000,000	850,000,000

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Consolidated Statements of Cash Flows - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017
Cash Flows from Operating Activities:
Net income	$ 774	$ 915
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation	895	799
Amortization of purchased intangibles	68	53
Equity in earnings of affiliated companies	(102)	(148)
Dividends received from affiliated companies	106	101
Deferred tax expense (benefit) provision	53	(62)
Incentives and customer deposits	691
Translated earnings contract (gain) loss	(66)	193
Unrealized translation losses (gains) on transactions	52	(264)
Changes in certain working capital items:
Trade accounts receivable	(197)	(190)
Inventories	(235)	(166)
Other current assets	(36)	(109)
Accounts payable and other current liabilities	94	(123)
Other, net	(119)	117
Net cash provided by operating activities	1,978	1,116
Cash Flows from Investing Activities:
Capital expenditures	(1,629)	(1,247)
Purchase of equipment for related party	(63)
Acquisition of businesses, net of cash received	(804)	(171)
Proceeds from settlement of initial contingent consideration asset	196
Realized gains on translated earnings contracts	62	199
Other, net	(28)	1
Net cash used in investing activities	(2,266)	(1,218)
Cash Flows from Financing Activities:
Net repayments of short-term borrowings and current portion of long-term debt	(375)
Proceeds from issuance of long-term debt, net	596	702
Principal payments under capital lease obligations	(2)	(1)
Payments of employee withholding tax on stock awards	(12)	(14)
Proceeds from the exercise of stock options	74	275
Repurchases of common stock for treasury	(1,880)	(2,064)
Dividends paid	(517)	(493)
Net cash used in financing activities	(2,116)	(1,595)
Effect of exchange rates on cash	(10)	271
Net decrease in cash and cash equivalents	(2,414)	(1,426)
Cash and cash equivalents at beginning of period	4,317	5,291
Cash and cash equivalents at end of period	$ 1,903	$ 3,865

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Significant Accounting Policies

9 Months Ended

Sep. 30, 2018

Significant Accounting Policies [Abstract]

Significant Accounting Policies

1.   Significant Accounting Policies

Basis of Presentation

In these notes, the terms “Corning,” “Company,” “we,” “us,” or “our” mean Corning Incorporated and its subsidiary companies.

The accompanying unaudited consolidated financial statements have been prepared pursuant to the rules and regulations of the Securities and Exchange Commission (“SEC”) and in accordance with U.S. Generally Accepted Accounting Principles (“GAAP”) for interim financial information.  Certain information and note disclosures normally included in financial statements prepared in accordance with GAAP have been omitted or condensed.  These interim consolidated financial statements should be read in conjunction with Corning’s consolidated financial statements and notes thereto included in its Annual Report on Form 10-K for the year ended December 31, 2017 (“2017 Form 10-K”).

The unaudited consolidated financial statements reflect all adjustments which, in the opinion of management, are necessary for a fair statement of the results of operations, financial position and cash flows for the interim periods presented.  All such adjustments are of a normal recurring nature.  The results for interim periods are not necessarily indicative of results which may be expected for any other interim period or for the full year.

On January 1, 2018, we adopted Accounting Standards Update (“ASU”) No. 2014-09 ASC (Topic 606), Revenue from Contracts with Customers, and applied the modified retrospective method of accounting to those contracts which were not completed as of January 1, 2018. Results for reporting periods beginning after January 1, 2018 are presented under Topic 606, while prior period amounts are not adjusted and continue to be reported in accordance with our historic accounting under ASC Topic 605 “Revenue Recognition”.  Because the impact of adopting the standard on Corning’s financial statements was immaterial, we have not made an adjustment to opening retained earnings.

One of Corning’s equity affiliates is currently assessing the potential impact of adopting ASU 2014-09 on its financial statements and will adopt the standard on January 1, 2019.  Our preliminary analysis indicates that the impact of adoption will not have a material impact on Corning’s financial statements.

On January 1, 2018, Corning adopted ASU 2016-15, Statement of Cash Flows (Topic 230): Classification of Certain Cash Receipts and Cash Payments, which refines the classification of certain aspects of the cash flow statement in regards to debt prepayment, settlement of debt instruments, contingent consideration payments, proceeds from insurance claims and life insurance policies, distribution from equity method investees, beneficial interests in securitization transactions and separately identifiable cash flows.  The impact of adopting the standard on Corning’s financial statements was not material.  

On January 1, 2018, we adopted ASU No. 2017-07, Compensation—Retirement Benefits (Topic 715): Improving the Presentation of Net Periodic Pension Cost and Net Periodic Postretirement Benefit Cost. The service cost component of net periodic pension and postretirement benefit cost is presented with other current compensation costs in operating income.  The remaining components are included in the line item Other income (expense), net, in the Consolidated Statements of Income.  Corning has applied the practical expedient which permits it to use the amounts disclosed in its pension and other postretirement benefit plan note for the prior comparative periods as the estimation basis for applying the retrospective presentation requirements.  The impact of adopting the standard on Corning’s financial statements was not material.  

Certain prior year amounts have been reclassified to conform to the current-year presentation.  These reclassifications had no impact on our results of operations, financial position, or changes in shareholders’ equity. 

New Accounting Standards

In February 2016, the FASB issued ASU 2016-02, Leases (Topic 842), which supersedes all existing guidance on accounting for leases in ASC Topic 840.  ASU 2016-02 will continue to classify leases as either financing or operating, with classification affecting the pattern of expense recognition in the statement of income.  This standard will be effective for fiscal years beginning after December 15, 2018, including interim periods within those fiscal years.  ASU 2016-02 is required to be applied with a modified retrospective approach with various optional practical expedients.  We are currently assessing the potential impact of adopting this standard on our financial statements and related disclosures.

One of Corning’s equity affiliates is currently assessing the potential impact of adopting this standard on its financial statements and elected to adopt the standard on January 1, 2020.

In February 2018, the FASB issued ASU 2018-02, Income Statement - Reporting Comprehensive Income, which allows for reclassification from accumulated other comprehensive income to retained earnings for stranded tax effects resulting from the 2017 Tax Cuts and Jobs Act.  ASU 2018-02 is effective for annual reporting periods beginning after December 15, 2018, and interim periods within those annual periods.  We are currently assessing the potential impact of adopting ASU 2018-02 on our financial statements.  

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Revenue

9 Months Ended

Sep. 30, 2018

Revenue [Abstract]

Revenue

2.   Revenue

On January 1, 2018, we adopted ASC Topic 606 “Revenue from Contracts with Customer”, and all related amendments, using the modified retrospective method applied to those contracts which were not completed as of January 1, 2018.  Results for reporting periods beginning after January 1, 2018 are presented under Topic 606, while prior period amounts are not adjusted and continue to be reported in accordance with our historic accounting under ASC Topic 605 “Revenue Recognition”. 

We have determined that the impact of transition to the new standard is immaterial to our revenue recognition model since the vast majority of our recognition is based on point in time transfer of control.  Accordingly, we have not made any adjustment to opening retained earnings.

Product Revenue (Point in Time)

The majority of our revenues are generated by delivery of products to our customers and recognized at a point in time based on our evaluation of when the customer obtains control of the products.  Revenue is recognized when all performance obligations under the terms of a contract with our customer are satisfied, and control of the product has been transferred to the customer.  If customer acceptance clauses are present and it cannot be objectively determined that control has been transferred, revenue is only recorded when customer acceptance is received and all performance obligations have been satisfied.  Sales of goods typically do not include multiple product and/or service elements.

Revenue is measured as the amount of consideration we expect to receive in exchange for transferring goods or providing services. Sales tax, value-added tax, and other taxes we collect concurrent with revenue-producing activities are excluded from revenue.  Incidental contract costs that are not material in the context of the delivery of goods and services are recognized as expense.

At the time revenue is recognized, allowances are recorded, with the related reduction to revenue, for estimated product returns, allowances and price discounts based upon historical experience and related terms of customer arrangements.  Where we have offered product warranties, we also establish liabilities for estimated warranty costs based upon historical experience and specific warranty provisions.  Warranty liabilities are adjusted when experience indicates the expected outcome will differ from initial estimates of the liability.  Product warranty liabilities are not material at September 30, 2018 and December 31, 2017.

Other Revenue (Over Time)

Corning’s over time revenues are mainly related to Telecommunications products, and are comprised of design, install, training and software maintenance services.The performance obligations under these contracts generally require services to be performed over time, resulting in either a straight-line amortization method or an input method using incurred and forecasted expense to predict revenue recognition patterns which follows satisfaction of the performance obligation.  Corning’s other revenue is inconsequential to our results.

Revenue Disaggregation Table

The following table shows revenues by major product categories, similar to our reportable segment disclosure.  Within each product category, contract terms, conditions and economic factors affecting the nature, amount, timing and uncertainty around revenue recognition and cash flows are substantially similar.  The commercial markets and selling channels are also similar. Except for an inconsequential amount of Telecommunications products, our product category revenues are recognized at point in time when control transfers to the customer.  Prior year amounts are presented under the ASC 605 basis of revenue recognition. 

Our revenues by product category are as follows (in millions):

	Three Months Ended				Nine Months Ended
	September 30,				September 30,
	2018		2017		2018		2017
Display products	$	815	$	767	$	2,315	$	2,250
Telecommunication products		1,117		917		3,026		2,617
Specialty glass products		459		373		1,080		1,010
Environmental substrate and filter products		331		277		970		815
Life science products		231		223		708		654
All Other		55		50		156		133
	$	3,008	$	2,607	$	8,255	$	7,479

Contract Assets and Liabilities

Contract assets, such as costs to obtain or fulfill contracts, are an insignificant component of Corning’s revenue recognition process.  The majority of Corning’s cost of fulfillment as a manufacturer of products is classified as inventory, fixed assets and intangible assets, which are accounted for under the respective guidance for those asset types.  Other costs of contract fulfillment are immaterial due to the nature of our products and their respective manufacturing processes.  

Contract liabilities include deferred revenues, other advanced payments and customer deposits. Deferred revenue and other advanced payments are not significant to our operations and are classified as part of other current liabilities in our financial statements.  Customer deposits are predominately related to Display products and are classified as part of other current liabilities and other long- term liabilities as appropriate, and are disclosed below. 

Customer Deposits

As of September 30, 2018, Corning has customer deposits of approximately $1.0 billion.  These represent non-refundable cash deposits for customers to secure rights to an amount of glass produced by Corning under long-term supply agreements.  The duration of these long-term supply agreements ranges up to ten years. As glass is shipped to customers, Corning will recognize revenue and issue credit memoranda to reduce the amount of the customer deposit liability, which are applied against customer receivables resulting from the sale of glass.  In 2018 and 2017, no credit memoranda were issued.

Practical Expedients and Exemptions

We do not disclose the value of unsatisfied performance obligations for (i) contracts with an original expected length of one year or less and (ii) contracts for which we recognize revenue at the amount to which we have the right to invoice for services performed.

We treat shipping and handling fees as a fulfillment cost and not as a separate performance obligation under the terms of our revenue contracts due to the perfunctory nature of the shipping and handling obligations. 

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Commitments, Contingencies and Guarantees

9 Months Ended

Sep. 30, 2018

Commitments, Contingencies and Guarantees [Abstract]

Commitments, Contingencies and Guarantees

3.   Commitments, Contingencies and Guarantees

Asbestos Claims

Corning and PPG Industries, Inc. each owned 50% of the capital stock of Pittsburgh Corning Corporation (“PCC”).  PCC filed for Chapter 11 reorganization in 2000 and the Modified Third Amended Plan of Reorganization for PCC (the “Plan”) became effective in April 2016.  At December 31, 2016, the Company’s liability under the Plan was $290 million, which is required to be paid through a series of fixed payments beginning in the second quarter of 2017.  Paymentsof$35 million and $70 million were made in June 2018 and June 2017, respectively.  At September 30, 2018, the total amount of payments due in years 2019 through 2022 is $185 million, of which $50million is due in the second quarter of 2019 and is classified as a current liability.  The remaining $135 million is classified as a non-current liability.

Non-PCC Asbestos Claims and Insurance Litigation

Corning is a defendant in certain cases alleging injuries from asbestos unrelated to PCC (the “non-PCC asbestos claims”) which had been stayed pending the confirmation of the Plan.  The stay was lifted on August 25, 2016.  Corning previously established a $150 million reserve for these non-PCC asbestos claims.  The estimated reserve represents the undiscounted projection of claims and related legal fees over the next 20 years.  The amount may need to be adjusted in future periods as more data becomes available; however, we cannot estimate any lesser or greater liability at this time.  At September 30, 2018 and December 31, 2017, the amount of the reserve for these non-PCC asbestos claims was $147 million.

Several of Corning’s insurers have commenced litigation in state courts for a declaration of the rights and obligations of the parties under insurance policies related to Corning’s asbestos claims.  Corning has resolved these issues with a majority of its relevant insurers, and is vigorously contesting these cases with the remaining relevant insurers.  Management is unable to predict the outcome of the litigation with these remaining insurers.

Dow Corning Chapter 11 Related Matters

Until June 1, 2016, Corning and The Dow Chemical Company (“Dow”) each owned 50% of the common stock of Dow Corning Corporation (“Dow Corning”). On May 31, 2016, Corning and Dow realigned their ownership interests in Dow Corning. In connection with the realignment, Corning retained its indirect ownership interest in the Hemlock Semiconductor Group and acquired HS Upstate, Inc. (now known as Corning Research & Development Corporation) which had been capitalized by Dow Corning with $4.8 billion. Following the realignment, Corning no longer owns any interest in Dow Corning.  In connection with the realignment, Corning agreed to indemnify Dow Corning for 50% of Dow Corning’s non-ordinary course, pre-closing liabilities to the extent such liabilities exceed the amounts reserved for them by Dow Corning as of May 31, 2016, including two legacy Dow Corning matters: the Dow Corning Breast Implant Litigation, and the Dow Corning Bankruptcy Pendency Interest Claims.

Dow Corning Breast Implant Litigation

In May 1995, Dow Corning filed for bankruptcy protection to address pending and claimed liabilities arising from many thousands of breast implant product lawsuits. On June1, 2004, Dow Corning emerged from Chapter 11 with a Plan of Reorganization (the “Plan”) which provided for the settlement or other resolution of implant claims. The Plan also includes releases for Corning and Dow as shareholders in exchange for contributions to the Plan.

Under the terms of the Plan, Dow Corning has established and funded a Settlement Trust and a Litigation Facility, referred to above, to provide a means for tort claimants to settle or litigate their claims. Inclusive of insurance, Dow Corning has paid approximately $1.8billion to the Settlement Trust.  As of May 31, 2016, Dow Corning had recorded a reserve for breast implant litigation of $290 million.  In the event Dow Corning’s total liability for these claims exceeds such amount, Corning may be required to indemnify Dow Corning for up to 50% of the excess liability.  At September 30, 2018, Dow Corning had recorded a reserve for breast implant litigation of $263million.

Dow Corning Bankruptcy Pendency Interest Claims

As a separate matter arising from the bankruptcy proceedings, Dow Corning is defending claims asserted by a number of commercial creditors who claim additional compounded interest at default and state statutory judgment rates as well as attorneys’ fees and other enforcement costs, during the period from May 1995 through June 2004.  As of May 31, 2016, Dow Corning had recorded a reserve for these claims of $107 million.  In the event Dow Corning’s liability for these claims exceeds such amount, Corning may be required to indemnify Dow Corning for up to 50% of the excess liability, subject to certain conditions and limits.  At  September 30, 2018, Dow Corning estimated the liability to commercial creditors to be within the range of $81million to $260 million. As of September 30, 2018, Dow Corning had recorded a reserve for these claims of $81 million.

Other Commitments and Contingencies

Corning is a defendant in various lawsuits, including environmental and product-related suits, and is subject to various claims that arise in the normal course of business.  In the opinion of management, the likelihood that the ultimate disposition of these matters will have a material adverse effect on Corning’s consolidated financial position, liquidity, or results of operations, is remote.  Other than certain asbestos related claims, there are no other material loss contingencies related to litigation.

Corning has been named by the Environmental Protection Agency (“the Agency”) under the Superfund Act, or by state governments under similar state laws, as a potentially responsible party for 15 active hazardous waste sites.  Under the Superfund Act, all parties who may have contributed any waste to a hazardous waste site, identified by the Agency, are jointly and severally liable for the cost of cleanup unless the Agency agrees otherwise.  It is Corning’s policy to accrue for its estimated liability related to Superfund sites and other environmental liabilities related to property owned by Corning based on expert analysis and continual monitoring by both internal and external consultants.  At September 30, 2018 and December31, 2017, Corning had accrued approximately $33million and $38 million (undiscounted) for the estimated liability for environmental cleanup and related litigation.  Based upon the information developed to date, management believes that the accrued reserve is a reasonable estimate of the Company’s liability and that the risk of an additional loss in an amount materially higher than that accrued is remote.

The ability of certain subsidiaries and affiliated companies to transfer funds is limited by provisions of foreign government regulations, affiliate agreements and certain loan agreements.  At September 30, 2018, the amount of equity subject to such restrictions for consolidated subsidiaries and affiliated companies was not significant.  While this amount is legally restricted, it does not result in operational difficulties since we have generally permitted subsidiaries to retain a majority of equity to support their growth programs.

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Debt

9 Months Ended

Sep. 30, 2018

Debt [Abstract]

Debt

4.   Debt

Based on borrowing rates currently available to us for loans with similar terms and maturities, the fair value of long-term debt was $5.1 billion at September 30, 2018 and December 31, 2017, respectively, compared to recorded book values of $5.1billion and $4.7 billion at September 30, 2018 and December 31, 2017, respectively.  The Company measures the fair value of its long-term debt using Level 2 inputs based primarily on current market yields for its existing debt traded in the secondary market.

Corning did not have outstanding commercial paper at September 30, 2018 and December 31, 2017.

In the third quarter of 2018, Corning amended and restated its revolving credit agreement (the “Revolving Credit Agreement”).  The Revolving Credit Agreement provides a $1.5 billion unsecured multi-currency line of credit and expires August 15, 2023.  At September 30, 2018, there were no outstanding amounts under the Revolving Credit Agreement. 

Debt Issuances

2018

In the second quarter of 2018, Corning issued three Japanese yen-denominated debt securities (the “Notes”), as follows:

· ¥10 billion 0.722% senior unsecured notes with a maturity of 7 years;

· ¥30.5 billion 1.043% senior unsecured notes with a maturity of 10 years; and

· ¥25 billion 1.219% senior unsecured notes with a maturity of 12 years.

The proceeds from the Notes were received in Japanese yen and converted to U.S. dollars on the date of issuance.  The net proceeds received in U.S. dollars, after deducting offering expenses, were $596 million.  Payments of principle and interest on the Notes will be in Japanese yen, or should yen be unavailable due to circumstances beyond Corning’s control, a U.S. dollar equivalent.

On a quarterly basis, Corning will recognize the transaction gains and losses resulting from changes in the JPY/USD exchange rate in the Other expense, net line of the Consolidated Statements of Income.  Cash proceeds from the offerings and payments for debt issuance costs are disclosed as financing activities, and cash payments to bondholders for interest will be disclosed as operating activities, in the Consolidated Statements of Cash Flows.

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Income Taxes

9 Months Ended

Sep. 30, 2018

Income Taxes [Abstract]

Income Taxes

5.   Income Taxes

Our provision for income taxes and the related effective income tax rates are as follows (in millions):

	Three Months Ended				Nine Months Ended
	September 30,				September 30,
	2018		2017		2018		2017
Provision for income taxes	$	(133)	$	(89)	$	(383)	$	(176)
Effective tax rate		17.5%		18.6%		33.1%		16.1%

For the three months ended September 30, 2018, the effective income tax rate differed from the U.S. statutory rate of 21%primarily due to the following:

· Additional tax amounts related to global intangible low-taxed income (“GILTI”);

· Benefits related to foreign derived intangible income (“FDII”);

· An increase in the estimated annual impact of the base erosion and anti-deferral tax (“BEAT”); and

· A  $48 million benefit related to an adjustment to the provisional estimate of the one-time Toll Charge recorded in 2017.  

For the nine months ended September 30, 2018, the effective income tax rate differed from the U.S. statutory rate of 21%  primarily due to the following:

· Additional tax expense of $172 million related to a preliminary agreement with the Internal Revenue Service (“IRS”) to settle the income tax audit for the years 2013 and 2014;

· Additional tax amounts related to global intangible low-taxed income (“GILTI”);

· Benefits related to foreign derived intangible income (“FDII”);

· An increase in the estimated annual impact of the base erosion and anti-deferral tax (“BEAT”);

· A  $28 million benefit from the release of a valuation allowance on deferred tax assets that are now considered realizable; and

· A  $48 million benefit related to an adjustment to the provisional estimate of the one-time Toll Charge recorded in 2017.  

For the three and nine months ended September 30, 2017, the effective income tax benefit differed from the U.S. statutory rate of 35%primarily due to the following benefits:

· Rate differences on income (loss) of consolidated foreign companies; and

· The benefit of excess foreign tax credits resulting from the inclusion of foreign earnings in U.S. income.

The Tax Cuts and Jobs Act (the “2017 Tax Act”) was enacted on December 22, 2017.  The 2017 Tax Act reduced the U.S. federal corporate income tax rate from 35% to 21%, and requires companies to pay a one-time transition tax, (the “Toll Charge”), on earnings of certain foreign subsidiaries that were previously tax deferred and creates new taxes on certain foreign sourced earnings.  We are applying the guidance in SAB 118 when accounting for the enactment-date effects of the Act.  As of September 30, 2018, we have not completed our accounting for all of the tax effects of the 2017 Tax Act.  We have made a reasonable estimate of certain effects of the 2017 Tax Act. However, in other cases, we have not been able to make a reasonable estimate and continue to account for those items based on our existing accounting under ASC 740, Income Taxes, and the provisions of the tax laws that were in effect immediately prior to enactment.  In all cases, we will continue to make and refine our calculations as additional analysis is completed.  Our estimates may also be affected as we gain a more thorough understanding of the 2017 Tax Act, including recently issued and anticipated proposed guidance, between now and December 31, 2018.  These changes could be material to income tax expense.

At year end December 31, 2017, we remeasured certain deferred tax assets and liabilities based on the rates at which they are expected to reverse in the future, which is generally 21%.  We recorded a provisional amount of $347 million at that time.  At December 31, 2017, we recorded a one-time Toll Charge based on our unrepatriated earnings of certain foreign subsidiaries that were previously deferred.  This charge resulted in a provisional tax expense amount of $1.1 billion.  At September 30, 2018, we have reduced our estimate of the one-time Toll Charge recorded in 2017 by $48 million in conjunction with filing our Federal income tax return.  We will continue to analyze and refine our calculations related to the measurement of these balances.

As of September 30, 2018, Corning has not yet completed its analysis of tax reform on its assertion regarding its indefinitely reinvested foreign earnings; therefore, the Company will continue to follow its historic position while it continues to analyze this issue.  While Corning is not changing its assertion at this time, the Company distributed approximately $2.2 billion during 2018 from its foreign subsidiaries to the U.S. parent of those subsidiaries.  There are no incremental taxes beyond the Toll Charge recorded in 2017 due with respect to this distribution of cash.

Under new guidance, a company can make a policy election to account for tax on global intangible low-taxed income (“GILTI”) as a period cost only or to also recognize deferred tax assets and liabilities when basis differences exist that are expected to affect the amount of GILTI inclusion upon reversal.  Corning’s accounting for the impact of the GILTI provisions of the 2017 Tax Act is incomplete and, as a result, it has not yet elected a policy to account for the GILTI provisions.

We will continue to monitor future guidance and to assess the impacts of the 2017 Tax Act.

Corning has reached a preliminary agreement with the IRS Exam team to resolve its 2013 and 2014 audits.  This preliminary agreement resulted in $172 million of additional tax expense in the first quarter of 2018, of which $12 million relates to interest expense, net of tax benefit.  Corning will use tax attributes to cover most of the tax expense.

Corning Display Technologies Taiwan (“CDTT”) is currently under audit by the Ministry of Finance for the 2015 tax year.  We expect this audit to take up to 2 years to complete.

Corning Precision Materials (“CPM”) is involved in several income and withholding tax disputes with South Korea.  The tax amounts in dispute are on deposit with the South Korean tax authorities and CPM has booked receivables for the amounts on deposit.  Corning believes that its tax positions are appropriate and is vigorously defending such positions.

Under its historic policy, Corning will continue to indefinitely reinvest substantially all of its foreign earnings, with the exception of an immaterial amount of current earnings that have very low or no tax cost associated with their repatriation.  Our current analysis indicates that we have sufficient U.S. liquidity, including borrowing capacity, to fund foreseeable U.S. cash needs without requiring the repatriation of foreign cash.

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Earnings per Common Share

9 Months Ended

Sep. 30, 2018

Earnings per Common Share [Abstract]

Earnings per Common Share

6.   Earnings per Common Share

The following table sets forth the computation of basic and diluted earnings per common share (in millions, except per share amounts):

	Three Months Ended				Nine Months Ended
	September 30,				September 30,
	2018		2017		2018		2017
Net income attributable to Corning Incorporated	$	625	$	390	$	774	$	915
Less:  Series A convertible preferred stock dividend		24		24		73		73
Net income available to common stockholders – basic		601		366		701		842
Plus:  Series A convertible preferred stock dividend		24		24		73		73
Net income available to common stockholders – diluted	$	625	$	390	$	774	$	915
Weighted-average common shares outstanding – basic		805		883		824		905
Effect of dilutive securities:
Employee stock options and other dilutive securities		10		11		9		11
Series A convertible preferred stock		115		115		115		115
Weighted-average common shares outstanding – diluted		930		1,009		948		1,031
Basic earnings per common share	$	0.75	$	0.41	$	0.85	$	0.93
Diluted earnings per common share	$	0.67	$	0.39	$	0.82	$	0.89
Antidilutive potential shares excluded from   diluted earnings per common share:
Employee stock options and awards		1		1		2		2
Total		1		1		2		2

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Inventories, Net of Inventory Reserves

9 Months Ended

Sep. 30, 2018

Inventories, Net of Inventory Reserves [Abstract]

Inventories, Net of Inventory Reserves

7.   Inventories, Net of Inventory Reserves

Inventories, net of inventory reserves comprise the following (in millions):

	September 30,		December 31,
	2018		2017
Finished goods	$	801	$	739
Work in process		367		322
Raw materials and accessories		380		306
Supplies and packing materials		373		345
Total inventories, net of inventory reserves	$	1,921	$	1,712

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Acquisition

9 Months Ended

Sep. 30, 2018

Acquisition [Abstract]

Acquisition

8.   Acquisition

On June 1, 2018, Corning acquired substantially all of The 3M Company’s Communications Market Division including a manufacturing facility and certain other assets (collectively referred to as “Purchased Assets”) for approximately $801 million.  The Purchased Assets constitute a business, which designs, manufactures and markets high bandwidth and optical fiber products. The acquisition was accounted for as a business combination.

A summary of the preliminary allocation of the total purchase price to the net tangible and other intangible assets acquired, with the remainder recorded as goodwill based on fair value is as follows (1) (in millions):

Fixed assets	$	32
Other net assets		5
Other intangible assets		511
Net tangible and intangible assets	$	548
Purchase price		801
Goodwill (2)	$	253

(1)Amounts reflect measurement period adjustments.

(2)The goodwill recognized is deductible for U.S. income tax purposes.  The goodwill was allocated to the Optical Communications segment.

Goodwill is related to the value of 3M’s Communications Market Division product and customer portfolio and its combination with Corning’s existing optical communications platform, as well as synergies and other intangibles that do not qualify for separate recognition.  Other intangible assets consist of customer relationships, trade names and developed technology and are amortized over various useful lives ranging from 3 to 14 years.  Acquisition-related costs of $16 million in the nine months ended September 30, 2018, included costs for legal, accounting, valuation and other professional services and were included in selling, general and administrative expense in the Consolidated Statements of Income.  Supplemental pro forma information was not provided because the Purchased Assets are not material to Corning’s consolidated financial statements.

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Goodwill and Other Intangible Assets

9 Months Ended

Sep. 30, 2018

Goodwill and Other Intangible Assets [Abstract]

Goodwill and Other Intangible Assets

9.  Goodwill and Other Intangible Assets

The carrying amount of goodwill by segment for the periods ended September 30, 2018 and December 31, 2017 is as follows (in millions):

	Display		Optical		Specialty		Life		All
	Technologies		Communications		Materials		Sciences		Other		Total
Balance at December 31, 2017	$	136	$	671	$	150	$	623	$	114	$	1,694
Acquired goodwill (1)				242				2				244
Measurement period    adjustment				11								11
Foreign currency translation    adjustment		(4)		(7)				(6)		(2)		(19)
Balance at September 30, 2018	$	132	$	917	$	150	$	619	$	112	$	1,930

(1)The Company completed the acquisition of 3M’s Communications Market Division in the Optical Communications segment during the second quarter of 2018.  Refer to Note 8 (Acquisitions) to the Consolidated Financial Statements for additional information on this acquisition.

Corning’s gross goodwill balances for the periods ended September 30, 2018 and December 31, 2017 were $8.4 and $8.2 billion, respectively.  Accumulated impairment losses were $6.5 billion for the periods ended September 30, 2018 and December 31, 2017, and were generated primarily through goodwill impairments related to the Optical Communications segment.

Other intangible assets are as follows (in millions):

	September 30, 2018						December 31, 2017
			Accumulated						Accumulated
	Gross		amortization		Net		Gross		amortization		Net
Amortized intangible assets:
Patents, trademarks, and    trade names	$	465	$	198	$	267	$	382	$	188	$	194
Customer lists and other		1,299		257		1,042		884		209		675
Total	$	1,764	$	455	$	1,309	$	1,266	$	397	$	869

Corning’s amortized intangible assets are primarily related to the Optical Communications and Life Sciences segments.  The net carrying amount of intangible assets increased during the first nine months of 2018, primarily due to the acquisition of 3M’s Communications Market Division of $511 million and other acquisition of $7 million of other intangible assets, offset by amortization of $68 million and foreign currency translation adjustments of $10 million.

Amortization expense related to all intangible assets is estimated to be $112 million annually for 2019, $111 million annually for 2020, $110 million annually for 2021 and 2022, and $109 million annually for 2023.

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Employee Retirement Plans

9 Months Ended

Sep. 30, 2018

Employee Retirement Plans [Abstract]

Employee Retirement Plans

10.  Employee Retirement Plans

The following table summarizes the components of net periodic benefit cost for Corning’s defined benefit pension and postretirement health care and life insurance plans (in millions):

	Pension benefits								Postretirement benefits
	Three months ended				Nine months ended				Three months ended				Nine months ended
	September 30,				September 30,				September 30,				September 30,
	2018		2017		2018		2017		2018		2017		2018		2017
Service cost	$	26	$	22	$	77	$	69	$	3	$	2	$	9	$	7
Interest cost		32		32		97		94		6		7		18		20
Expected return on plan assets		(47)		(43)		(142)		(130)
Amortization of prior service    cost (credit)		2		1		6		4		(2)		(1)		(5)		(2)
Recognition of actuarial loss						1		15
Total pension and postretirement    benefit expense	$	13	$	12	$	39	$	52	$	7	$	8	$	22	$	25

The components of net period benefit cost other than the service cost component are included in the line item “Other expense, net” in the consolidated statements of income.

On January 1, 2018, we adopted Compensation—Retirement Benefits: Improving the Presentation of Net Periodic Pension Cost and Net Periodic Postretirement Benefit Cost.  The service cost component of net periodic pension and postretirement benefit cost is presented with other current compensation costs in operating income.  The remaining components are included in the line item Other income (expense), net, in the consolidated statements of income. 

Corning has applied the practical expedient which permits it to use the amounts disclosed in its pension and other postretirement benefit plan note for the prior comparative periods as the estimation basis for applying the retrospective presentation requirements.  See Note 1 (Significant Accounting Policies) for additional information.

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Other Liabilities

9 Months Ended

Sep. 30, 2018

Other Liabilities [Abstract]

Other Liabilities

11.  Other Liabilities

Other liabilities follow (in millions):

	September 30,		December 31,
	2018		2017
Current liabilities:
Wages and employee benefits	$	533	$	620
Income taxes		252		148
Derivative instruments		50		42
Asbestos and other litigation (Note 3)		148		41
Other current liabilities		785		540
Other accrued liabilities	$	1,768	$	1,391
Non-current liabilities:
Defined benefit pension plan liabilities	$	783	$	713
Derivative instruments		287		333
Asbestos and other litigation (Note 3)		279		338
Investment in Hemlock Semiconductor Group ("HSG") (1)		113		105
Customer deposits (Note 2)		923		382
Deferred tax liabilities		328		451
Other non-current liabilities		832		695
Other liabilities	$	3,545	$	3,017

(1) The negative carrying value resulted from a one-time charge to this entity in 2014 for the permanent abandonment of certain assets.

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Hedging Activities

9 Months Ended

Sep. 30, 2018

Hedging Activities [Abstract]

Hedging Activities

12.  Hedging Activities

Undesignated Hedges

The table below includes a total gross notional value for translated earnings contracts of $14.7 billion and $14.3 billion at September 30, 2018 and December 31, 2017, respectively.  These include gross notional value for average rate forwards of $12.1billion and $13.0 billion, zero-cost collars and purchased put or call options of $2.6 billion and $1.3 billion at September 30, 2018 and December 31, 2017, respectively.  The majority of the average rate forward contracts hedge a significant portion of the Company’s exposure to the Japanese yen with maturities spanning the years 2018-2022 and with gross notional values of $9.7 billion and $11.7 billion at September 30, 2018 and December 31, 2017, respectively.  The average rate forward contracts also partially hedge the impacts of the South Korean won, Chinese yuan, euro and British pound translation on the Company’s projected net income.  With respect to the zero-cost collars, the gross notional amount includes the value of both the put and call options.  However, due to the nature of the zero-cost collars, only the put or the call option can be exercised at maturity.

The following tables summarize the notional amounts and respective fair values of Corning’s derivative financial instruments on a gross basis for September 30, 2018 and December 31, 2017 (in millions):

					Asset derivatives					Liability derivatives
	Gross notional amount				Balance	Fair value				Balance	Fair value
	Sept. 30,		Dec. 31,		sheet	Sept. 30,		Dec. 31,		sheet	Sept. 30,		Dec. 31,
	2018		2017		location	2018		2017		location	2018		2017
Derivatives   designated as   hedging   instruments
Foreign exchange   contracts (1)	$	376	$	294	Other current assets	$	12	$	20
					Other assets		2		1
Interest rate   contracts		850		550	Other current assets		9			Other accrued liabilities	$	(2)
										Other liabilities		(8)	$	(8)
Derivatives not   designated as   hedging   instruments
Foreign exchange   contracts, other		1,136		599	Other current assets		9		2	Other accrued liabilities		(8)		(7)
Translated earnings   contracts		14,679		14,275	Other current assets		159		176	Other accrued liabilities		(40)		(34)
					Other assets		64		66	Other liabilities		(279)		(325)
Total derivatives	$	17,041	$	15,718		$	255	$	265		$	(337)	$	(374)

(1) Cash flow hedges with a typical duration of 24 months or less.

The following table summarizes the effect of derivative financial instruments on Corning’s consolidated financial statements for the three and nine months ended September 30, 2018 and 2017 (in millions):

	Effect of derivative instruments on the consolidated financial statements
	for the three months ended September 30,
	Gain recognized in other				Location of gain/(loss)	Gain/(loss) reclassified from
	comprehensive income				reclassified from	accumulated OCI into
Derivatives in hedging	(OCI)				accumulated OCI into	income (effective) (1)
relationships	2018		2017		income (effective)	2018		2017
Interest rate contracts	$	12
Foreign exchange contracts		19	$	3	Cost of sales	$	4	$	(1)
Total cash flow hedges	$	31	$	3		$	4	$	(1)

	Effect of derivative instruments on the consolidated financial statements
	for the nine months ended September 30,
	Gain recognized in				Location of gain/(loss)	Gain/(loss) reclassified from
	other comprehensive income				reclassified from	accumulated OCI into
Derivatives in hedging	(OCI)				accumulated OCI into	income ineffective/effective (1)
relationships	2018		2017		income (effective)	2018		2017
					Sales			$	1
Interest rate contracts	$	9			Cost of sales	$	10		(11)
Foreign exchange contracts		2	$	36	Other expense, net		(1)		(1)
Total cash flow hedges	$	11	$	36		$	9	$	(11)

(1) The amount of hedge ineffectiveness at September 30, 2018 and 2017 was insignificant.

The following table summarizes the effect on the consolidated financial statements relating to Corning’s derivative financial instruments (in millions):

		Gain (loss) recognized in income
		Three months ended				Nine months ended
	Location of gain/(loss)	September 30,				September 30,
Undesignated derivatives	recognized in income	2018		2017		2018		2017
Foreign exchange contracts   – balance sheet and loans	Other income (expense), net	$	10	$	(7)	$	19	$	(19)
Foreign currency hedges   related to translated earnings	Translated earnings   contract gain (loss), net		230		26		66		(193)
Total undesignated		$	240	$	19	$	85	$	(212)

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Fair Value Measurements

9 Months Ended

Sep. 30, 2018

Fair Value Measurements [Abstract]

Fair Value Measurements

13.  Fair Value Measurements

Fair value standards under U.S. GAAP define fair value, establish a framework for measuring fair value in applying generally accepted accounting principles, and require disclosures about fair value measurements.  The standards also identify two kinds of inputs that are used to determine the fair value of assets and liabilities: observable and unobservable.  Observable inputs are based on market data or independent sources while unobservable inputs are based on the Company’s own market assumptions.  Once inputs have been characterized, the inputs are prioritized into one of three broad levels (provided in the table below) used to measure fair value.  Fair value standards apply whenever an entity is measuring fair value under other accounting pronouncements that require or permit fair value measurement and require the use of observable market data when available. 

The following tables provide fair value measurement information for the Company’s major categories of financial assets and liabilities measured on a recurring basis (in millions):

			Fair value measurements at reporting date using
			Quoted prices in	Significant other		Significant
			active markets for	observable		unobservable
	September 30,		identical assets	inputs		inputs
	2018		(Level 1)	(Level 2)		(Level 3)
Current assets:
Other current assets (1)	$	189		$	189
Non-current assets:
Investments (2)	$	32				$	32
Other assets (1)	$	66		$	66
Current liabilities:
Other accrued liabilities (1)	$	50		$	50
Non-current liabilities:
Other liabilities (1)(3)	$	307		$	287	$	20

(1) Derivative assets and liabilities include foreign exchange contracts which are measured using observable inputs for similar assets and liabilities.

(2) One of the Company’s equity securities was measured using unobservable (Level 3) inputs, in the amount of $32 million.

(3) Other liabilities include contingent consideration that was measured using unobservable (Level 3) inputs, in the amount of $20 million.

			Fair value measurements at reporting date using
			Quoted prices in	Significant other		Significant
			active markets for	observable		unobservable
	December 31,		identical assets	inputs		inputs
	2017		(Level 1)	(Level 2)		(Level 3)
Current assets:
Other current assets (1)(2)	$	497		$	197	$	300
Non-current assets:
Other assets (1)	$	68		$	68
Current liabilities:
Other accrued liabilities (1)(2)	$	44		$	42	$	2
Non-current liabilities:
Other liabilities (1)(2)	$	353		$	333	$	20

(1) Derivative assets and liabilities include foreign exchange contracts which are measured using observable inputs for similar assets and liabilities.

(2) At December 31, 2017, other current assets, other accrued liabilities and other liabilities include contingent consideration that was measured using unobservable (Level 3) inputs, in the amounts of $300 million, $2 million and $20 million, respectively.

As a result of the acquisition of Samsung Corning Precision Materials in January 2014, the Company had contingent consideration that was measured using unobservable (Level 3) inputs in an option pricing model.  The fair value of the contingent consideration was calculated to be $300 million as of December 31, 2017.  This amount was settled in cash and received in June 2018.

There were no significant financial assets and liabilities measured on a nonrecurring basis as of September 30, 2018 and December 31, 2017.

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Shareholders' Equity

9 Months Ended

Sep. 30, 2018

Shareholders' Equity [Abstract]

Shareholders' Equity

14.  Shareholders’ Equity

Fixed Rate Cumulative Convertible Preferred Stock, Series A

Corning has 2,300 outstanding shares of Fixed Rate Cumulative Convertible Preferred Stock, Series A.  The Preferred Stock is convertible at the option of the holder and the Company upon certain events, at a conversion rate of 50,000 shares of Corning’s common stock per one share of Preferred Stock, subject to certain anti-dilution provisions.  As of September 30, 2018, the Preferred Stock has not been converted, and none of the anti-dilution provisions have been triggered. 

Share Repurchases

2017 Share Repurchases

In December 2016, Corning’s Board of Directors approved a $4 billion share repurchase program with no expiration (the “2016 Repurchase Program”).  In the year ended December  31, 2017, Corning entered into two separate accelerated share repurchase agreements under this program (the “2017 ASR agreements”).  In the second quarter of 2017, Corning entered into and finalized an accelerated share repurchase agreement under which we paid $500 million for a total of 17.1 million shares.  In the third quarter of 2017, Corning entered into and finalized an additional accelerated share repurchase agreement under which we paid $500 million for a total of 17.2 million shares.

In addition to the 2017 ASR agreements, during the year ended December  31, 2017, the Company repurchased 50.1 million shares of common stock on the market for approximately$1.4 billion, resulting in a total of 84.4 million shares repurchased for approximately $2.4 billion during 2017.

2018 Share Repurchases

On April 26, 2018, Corning’s Board of Directors approved a $2 billion share repurchase program with no expiration (the “2018 Repurchase Program”).  In the three and nine months ended September 30, 2018, the Company repurchased 11.8 million and 63.4 million shares of common stock on the open market for approximately $384 million and $1.9 billion, respectively, as part of its 2016 and 2018 Repurchase Programs. 

Accumulated Other Comprehensive Loss

In the three and nine months ended September 30, 2018 and 2017, the change in accumulated other comprehensive loss  was primarily related to the foreign currency translation adjustment.

A summary of changes in the foreign currency translation adjustment component of accumulated other comprehensive lossis as follows (in millions)(1):

	Three months ended				Nine months ended
	September 30,				September 30,
	2018		2017		2018		2017
Beginning balance	$	(693)	$	(871)	$	(529)	$	(1,275)
Other comprehensive (loss) income (2)		(128)		49		(281)		435
Equity method affiliates (3)				4		(11)		22
Net current-period other comprehensive (loss) income - foreign currency translation adjustment		(128)		53		(292)		457
Ending balance	$	(821)	$	(818)	$	(821)	$	(818)

(1) All amounts are after tax.  Amounts in parentheses indicate debits to accumulated other comprehensive loss.

(2) For the three months ended September 30, 2018 and 2017, tax amounts are not significant.  For thenine months ended September 30, 2018 and 2017, amounts are net of tax benefit of $28 million and tax expense of $47 million, respectively.

(3) Tax effects are not significant.

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Reportable Segments

9 Months Ended

Sep. 30, 2018

Reportable Segments [Abstract]

Reportable Segments

15.  Reportable Segments

Our reportable segments are as follows:

· Display Technologies – manufactures glass substrates primarily for flat panel displays.

· Optical Communications – manufactures carrier and enterprise network components for the telecommunications industry.

· Specialty Materials – manufactures products that provide more than 150 material formulations for glass, glass ceramics and fluoride crystals to meet demand for unique customer needs.

· Environmental Technologies – manufactures ceramic substrates and filters for automotive and diesel applications.

· Life Sciences – manufactures glass and plastic labware, equipment, media and reagents enabling workflow solutions for scientific applications.

All other segments that do not meet the quantitative threshold for separate reporting have been grouped as “All Other.”  This group is primarily comprised of the results of the pharmaceutical technologies business and new product lines and development projects, as well as certain corporate investments such as Eurokera and Keraglass equity affiliates. 

Effective beginning in the first quarter of 2018, the Company has changed its measurement of segment sales and segment net income, and has recast prior periods presented based on the new methodology.  Included in this new measurement is a change in our segment tax rate to 21%to better reflect the new corporate tax rate under the 2017 Tax Act.  Additionally, the impact of changes in the Japanese yen, Korean won, Chinese yuan and New Taiwan dollar will be excluded from segment sales and segment net income for the Display Technologies and Specialty Materials segments, and certain income and expenses that were previously allocated to our segments are now included in the unallocated amounts in the reconciliation of reportable segment net income to consolidated net income.  These include items that are not used by our chief operating decision maker (“CODM”) in evaluating the results of or in allocating resources to our segments and include the following items:  the impact of our translated earnings contracts; acquisition-related costs; discrete tax items and other tax-related adjustments; litigation, regulatory and other legal matters; restructuring, impairment and other charges; adjustments relating to acquisitions; and other non-recurring non-operational items.  Although we exclude these amounts from segment results, they are included in reported consolidated results.

We prepared the financial results for our reportable segments on a basis that is consistent with the manner in which we internally disaggregate financial information to assist the CODM in making internal operating decisions.  We included the earnings of equity affiliates that are closely associated with our reportable segments in the respective segment’s net income.  We have allocated certain common expenses among reportable segments differently than we would for stand-alone financial information.  Segment net income may not be consistent with measures used by other companies. 

Reportable Segments (in millions)

	Display		Optical		Specialty		Environmental		Life		All
	Technologies		Communications		Materials		Technologies		Sciences		Other		Total
Three months ended
September 30, 2018
Segment net sales	$	852	$	1,117	$	459	$	331	$	231	$	55	$	3,045
Depreciation (1)	$	146	$	55	$	34	$	30	$	12	$	10	$	287
Research, development and    engineering expenses (2)	$	26	$	53	$	43	$	28	$	5	$	58	$	213
Income tax (provision)    benefit	$	(57)	$	(46)	$	(31)	$	(16)	$	(8)	$	19	$	(139)
Segment net income (loss) (3)	$	218	$	168	$	116	$	60	$	30	$	(72)	$	520

	Display		Optical		Specialty		Environmental		Life		All
	Technologies		Communications		Materials		Technologies		Sciences		Other		Total
Three months ended
September 30, 2017
Segment net sales	$	795	$	917	$	373	$	277	$	223	$	50	$	2,635
Depreciation (1)	$	134	$	49	$	34	$	31	$	14	$	12	$	274
Research, development and    engineering expenses (2)	$	21	$	44	$	38	$	28	$	6	$	53	$	190
Income tax (provision)    benefit	$	(56)	$	(35)	$	(22)	$	(11)	$	(7)	$	17	$	(114)
Segment net income (loss) (3)	$	211	$	132	$	86	$	40	$	25	$	(64)	$	430

	Display		Optical		Specialty		Environmental		Life		All
	Technologies		Communications		Materials		Technologies		Sciences		Other		Total
Nine Months Ended
September 30, 2018
Segment net sales	$	2,377	$	3,026	$	1,080	$	970	$	708	$	156	$	8,317
Depreciation (1)	$	436	$	160	$	102	$	89	$	39	$	31	$	857
Research, development and    engineering expenses (2)	$	76	$	153	$	123	$	86	$	15	$	174	$	627
Income tax (provision)    benefit	$	(157)	$	(117)	$	(60)	$	(44)	$	(23)	$	60	$	(341)
Segment net income (loss) (3)	$	595	$	427	$	226	$	166	$	88	$	(224)	$	1,278

	Display		Optical		Specialty		Environmental		Life		All
	Technologies		Communications		Materials		Technologies		Sciences		Other		Total
Nine Months Ended
September 30, 2017
Segment net sales	$	2,354	$	2,617	$	1,010	$	815	$	654	$	133	$	7,583
Depreciation (1)	$	393	$	142	$	94	$	93	$	39	$	34	$	795
Research, development and    engineering expenses (2)	$	63	$	121	$	111	$	80	$	18	$	157	$	550
Income tax (provision)    benefit	$	(180)	$	(100)	$	(56)	$	(33)	$	(19)	$	48	$	(340)
Segment net income (loss) (3)	$	682	$	370	$	213	$	122	$	71	$	(186)	$	1,272

(1) Depreciation expense for Corning’s reportable segments includes an allocation of depreciation of corporate property not specifically identifiable to a segment.

(2) Research, development and engineering expenses include direct project spending that is identifiable to a segment.

(3) Many of Corning’s administrative and staff functions are performed on a centralized basis.  Where practicable, Corning charges these expenses to segments based upon the extent to which each business uses a centralized function.  Other staff functions, such as corporate finance, human resources and legal, are allocated to segments, primarily as a percentage of sales.  Expenses that are not allocated to the segments are included in the reconciliation of reportable segment net income to consolidated net income below.

A reconciliation of reportable segment and All Other net sales to consolidated net sales follows (in millions):

	Three months ended				Nine months ended
	September 30,				September 30,
	2018		2017		2018		2017
Net sales of reportable segments and All Other	$	3,045	$	2,635	$	8,317	$	7,583
Impact of foreign currency movements (1)		(37)		(28)		(62)		(104)
Net sales	$	3,008	$	2,607	$	8,255	$	7,479

(1)This amount primarily represents the impact of foreign currency adjustments in the Display Technologies segment.

A reconciliation of reportable segment net income to consolidated net income follows (in millions):

	Three months ended				Nine months ended
	September 30,				September 30,
	2018		2017		2018		2017
Net income of reportable segments	$	592	$	494	$	1,502	$	1,458
Net loss of All Other		(72)		(64)		(224)		(186)
Unallocated amounts:
Impact of foreign currency movements		(42)		(34)		(110)		(124)
Gain (loss) on foreign currency hedges       related to translated earnings		230		26		66		(193)
Translation gain on Japanese yen-denominated debt		30		14		28		14
Litigation, regulatory and other legal matters		(11)				(143)		12
Research, development, and engineering expense		(31)		(25)		(99)		(72)
Equity in earnings of affiliated companies (1)		31		29		100		139
Amortization of intangibles		(27)		(18)		(68)		(53)
Interest expense, net		(38)		(27)		(111)		(79)
Income tax benefit (provision)		6		25		(42)		164
Other corporate items		(43)		(30)		(125)		(165)
Net income	$	625	$	390	$	774	$	915

(1) Primarily represents the equity earnings of HSG.

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Significant Accounting Policies (Policy)

9 Months Ended

Sep. 30, 2018

Significant Accounting Policies [Abstract]

Basis of Presentation

Basis of Presentation

In these notes, the terms “Corning,” “Company,” “we,” “us,” or “our” mean Corning Incorporated and its subsidiary companies.

The accompanying unaudited consolidated financial statements have been prepared pursuant to the rules and regulations of the Securities and Exchange Commission (“SEC”) and in accordance with U.S. Generally Accepted Accounting Principles (“GAAP”) for interim financial information.  Certain information and note disclosures normally included in financial statements prepared in accordance with GAAP have been omitted or condensed.  These interim consolidated financial statements should be read in conjunction with Corning’s consolidated financial statements and notes thereto included in its Annual Report on Form 10-K for the year ended December 31, 2017 (“2017 Form 10-K”).

The unaudited consolidated financial statements reflect all adjustments which, in the opinion of management, are necessary for a fair statement of the results of operations, financial position and cash flows for the interim periods presented.  All such adjustments are of a normal recurring nature.  The results for interim periods are not necessarily indicative of results which may be expected for any other interim period or for the full year.

On January 1, 2018, we adopted Accounting Standards Update (“ASU”) No. 2014-09 ASC (Topic 606), Revenue from Contracts with Customers, and applied the modified retrospective method of accounting to those contracts which were not completed as of January 1, 2018. Results for reporting periods beginning after January 1, 2018 are presented under Topic 606, while prior period amounts are not adjusted and continue to be reported in accordance with our historic accounting under ASC Topic 605 “Revenue Recognition”.  Because the impact of adopting the standard on Corning’s financial statements was immaterial, we have not made an adjustment to opening retained earnings.

One of Corning’s equity affiliates is currently assessing the potential impact of adopting ASU 2014-09 on its financial statements and will adopt the standard on January 1, 2019.  Our preliminary analysis indicates that the impact of adoption will not have a material impact on Corning’s financial statements.

On January 1, 2018, Corning adopted ASU 2016-15, Statement of Cash Flows (Topic 230): Classification of Certain Cash Receipts and Cash Payments, which refines the classification of certain aspects of the cash flow statement in regards to debt prepayment, settlement of debt instruments, contingent consideration payments, proceeds from insurance claims and life insurance policies, distribution from equity method investees, beneficial interests in securitization transactions and separately identifiable cash flows.  The impact of adopting the standard on Corning’s financial statements was not material.  

On January 1, 2018, we adopted ASU No. 2017-07, Compensation—Retirement Benefits (Topic 715): Improving the Presentation of Net Periodic Pension Cost and Net Periodic Postretirement Benefit Cost. The service cost component of net periodic pension and postretirement benefit cost is presented with other current compensation costs in operating income.  The remaining components are included in the line item Other income (expense), net, in the Consolidated Statements of Income.  Corning has applied the practical expedient which permits it to use the amounts disclosed in its pension and other postretirement benefit plan note for the prior comparative periods as the estimation basis for applying the retrospective presentation requirements.  The impact of adopting the standard on Corning’s financial statements was not material.  

Certain prior year amounts have been reclassified to conform to the current-year presentation.  These reclassifications had no impact on our results of operations, financial position, or changes in shareholders’ equity. 

New Accounting Standards

New Accounting Standards

In February 2016, the FASB issued ASU 2016-02, Leases (Topic 842), which supersedes all existing guidance on accounting for leases in ASC Topic 840.  ASU 2016-02 will continue to classify leases as either financing or operating, with classification affecting the pattern of expense recognition in the statement of income.  This standard will be effective for fiscal years beginning after December 15, 2018, including interim periods within those fiscal years.  ASU 2016-02 is required to be applied with a modified retrospective approach with various optional practical expedients.  We are currently assessing the potential impact of adopting this standard on our financial statements and related disclosures.

One of Corning’s equity affiliates is currently assessing the potential impact of adopting this standard on its financial statements and elected to adopt the standard on January 1, 2020.

In February 2018, the FASB issued ASU 2018-02, Income Statement - Reporting Comprehensive Income, which allows for reclassification from accumulated other comprehensive income to retained earnings for stranded tax effects resulting from the 2017 Tax Cuts and Jobs Act.  ASU 2018-02 is effective for annual reporting periods beginning after December 15, 2018, and interim periods within those annual periods.  We are currently assessing the potential impact of adopting ASU 2018-02 on our financial statements

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Revenue (Tables)

9 Months Ended

Sep. 30, 2018

Revenue [Abstract]

Disaggregation of Revenue

	Three Months Ended				Nine Months Ended
	September 30,				September 30,
	2018		2017		2018		2017
Display products	$	815	$	767	$	2,315	$	2,250
Telecommunication products		1,117		917		3,026		2,617
Specialty glass products		459		373		1,080		1,010
Environmental substrate and filter products		331		277		970		815
Life science products		231		223		708		654
All Other		55		50		156		133
	$	3,008	$	2,607	$	8,255	$	7,479

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Income Taxes (Tables)

9 Months Ended

Sep. 30, 2018

Income Taxes [Abstract]

Provision for Income Taxes

	Three Months Ended				Nine Months Ended
	September 30,				September 30,
	2018		2017		2018		2017
Provision for income taxes	$	(133)	$	(89)	$	(383)	$	(176)
Effective tax rate		17.5%		18.6%		33.1%		16.1%

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Earnings per Common Share (Tables)

9 Months Ended

Sep. 30, 2018

Earnings per Common Share [Abstract]

Computation of Basic and Diluted Earnings per Common Share

	Three Months Ended				Nine Months Ended
	September 30,				September 30,
	2018		2017		2018		2017
Net income attributable to Corning Incorporated	$	625	$	390	$	774	$	915
Less:  Series A convertible preferred stock dividend		24		24		73		73
Net income available to common stockholders – basic		601		366		701		842
Plus:  Series A convertible preferred stock dividend		24		24		73		73
Net income available to common stockholders – diluted	$	625	$	390	$	774	$	915
Weighted-average common shares outstanding – basic		805		883		824		905
Effect of dilutive securities:
Employee stock options and other dilutive securities		10		11		9		11
Series A convertible preferred stock		115		115		115		115
Weighted-average common shares outstanding – diluted		930		1,009		948		1,031
Basic earnings per common share	$	0.75	$	0.41	$	0.85	$	0.93
Diluted earnings per common share	$	0.67	$	0.39	$	0.82	$	0.89
Antidilutive potential shares excluded from   diluted earnings per common share:
Employee stock options and awards		1		1		2		2
Total		1		1		2		2

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Inventories, Net of Inventory Reserves (Tables)

9 Months Ended

Sep. 30, 2018

Inventories, Net of Inventory Reserves [Abstract]

Inventories, Net

	September 30,		December 31,
	2018		2017
Finished goods	$	801	$	739
Work in process		367		322
Raw materials and accessories		380		306
Supplies and packing materials		373		345
Total inventories, net of inventory reserves	$	1,921	$	1,712

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Acquisition (Tables)

9 Months Ended

Sep. 30, 2018

Notes Tables

Recognized Amounts of Identified Assets Acquired and Liabilities Assumed

Fixed assets	$	32
Other net assets		5
Other intangible assets		511
Net tangible and intangible assets	$	548
Purchase price		801
Goodwill (2)	$	253

(1)Amounts reflect measurement period adjustments.

(2)The goodwill recognized is deductible for U.S. income tax purposes.  The goodwill was allocated to the Optical Communications segment.

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Goodwill and Other Intangible Assets (Tables)

9 Months Ended

Sep. 30, 2018

Goodwill and Other Intangible Assets [Abstract]

Carrying Amount of Goodwill by Segment

	Display		Optical		Specialty		Life		All
	Technologies		Communications		Materials		Sciences		Other		Total
Balance at December 31, 2017	$	136	$	671	$	150	$	623	$	114	$	1,694
Acquired goodwill (1)				242				2				244
Measurement period    adjustment				11								11
Foreign currency translation    adjustment		(4)		(7)				(6)		(2)		(19)
Balance at September 30, 2018	$	132	$	917	$	150	$	619	$	112	$	1,930

(1)The Company completed the acquisition of 3M’s Communications Market Division in the Optical Communications segment during the second quarter of 2018.  Refer to Note 8 (Acquisitions) to the Consolidated Financial Statements for additional information on this acquisition.

Other Intangible Assets

	September 30, 2018						December 31, 2017
			Accumulated						Accumulated
	Gross		amortization		Net		Gross		amortization		Net
Amortized intangible assets:
Patents, trademarks, and    trade names	$	465	$	198	$	267	$	382	$	188	$	194
Customer lists and other		1,299		257		1,042		884		209		675
Total	$	1,764	$	455	$	1,309	$	1,266	$	397	$	869

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Employee Retirement Plans (Tables)

9 Months Ended

Sep. 30, 2018

Employee Retirement Plans [Abstract]

Net Periodic Benefit Expense

	Pension benefits								Postretirement benefits
	Three months ended				Nine months ended				Three months ended				Nine months ended
	September 30,				September 30,				September 30,				September 30,
	2018		2017		2018		2017		2018		2017		2018		2017
Service cost	$	26	$	22	$	77	$	69	$	3	$	2	$	9	$	7
Interest cost		32		32		97		94		6		7		18		20
Expected return on plan assets		(47)		(43)		(142)		(130)
Amortization of prior service    cost (credit)		2		1		6		4		(2)		(1)		(5)		(2)
Recognition of actuarial loss						1		15
Total pension and postretirement    benefit expense	$	13	$	12	$	39	$	52	$	7	$	8	$	22	$	25

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Other Liabilities (Tables)

9 Months Ended

Sep. 30, 2018

Other Liabilities [Abstract]

Other Liabilities

	September 30,		December 31,
	2018		2017
Current liabilities:
Wages and employee benefits	$	533	$	620
Income taxes		252		148
Derivative instruments		50		42
Asbestos and other litigation (Note 3)		148		41
Other current liabilities		785		540
Other accrued liabilities	$	1,768	$	1,391
Non-current liabilities:
Defined benefit pension plan liabilities	$	783	$	713
Derivative instruments		287		333
Asbestos and other litigation (Note 3)		279		338
Investment in Hemlock Semiconductor Group ("HSG") (1)		113		105
Customer deposits (Note 2)		923		382
Deferred tax liabilities		328		451
Other non-current liabilities		832		695
Other liabilities	$	3,545	$	3,017

The negative carrying value resulted from a one-time charge to this entity in 2014 for the permanent abandonment of certain assets.

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Hedging Activities (Tables)

9 Months Ended

Sep. 30, 2018

Summary of Notional Amounts and Respective Fair Values of Derivative Financial Instruments

					Asset derivatives					Liability derivatives
	Gross notional amount				Balance	Fair value				Balance	Fair value
	Sept. 30,		Dec. 31,		sheet	Sept. 30,		Dec. 31,		sheet	Sept. 30,		Dec. 31,
	2018		2017		location	2018		2017		location	2018		2017
Derivatives   designated as   hedging   instruments
Foreign exchange   contracts (1)	$	376	$	294	Other current assets	$	12	$	20
					Other assets		2		1
Interest rate   contracts		850		550	Other current assets		9			Other accrued liabilities	$	(2)
										Other liabilities		(8)	$	(8)
Derivatives not   designated as   hedging   instruments
Foreign exchange   contracts, other		1,136		599	Other current assets		9		2	Other accrued liabilities		(8)		(7)
Translated earnings   contracts		14,679		14,275	Other current assets		159		176	Other accrued liabilities		(40)		(34)
					Other assets		64		66	Other liabilities		(279)		(325)
Total derivatives	$	17,041	$	15,718		$	255	$	265		$	(337)	$	(374)

(1) Cash flow hedges with a typical duration of 24 months or less.

Designated as Hedging Instrument [Member]

Effect on Consolidated Financial Statements

	Effect of derivative instruments on the consolidated financial statements
	for the three months ended September 30,
	Gain recognized in other				Location of gain/(loss)	Gain/(loss) reclassified from
	comprehensive income				reclassified from	accumulated OCI into
Derivatives in hedging	(OCI)				accumulated OCI into	income (effective) (1)
relationships	2018		2017		income (effective)	2018		2017
Interest rate contracts	$	12
Foreign exchange contracts		19	$	3	Cost of sales	$	4	$	(1)
Total cash flow hedges	$	31	$	3		$	4	$	(1)

	Effect of derivative instruments on the consolidated financial statements
	for the nine months ended September 30,
	Gain recognized in				Location of gain/(loss)	Gain/(loss) reclassified from
	other comprehensive income				reclassified from	accumulated OCI into
Derivatives in hedging	(OCI)				accumulated OCI into	income ineffective/effective (1)
relationships	2018		2017		income (effective)	2018		2017
					Sales			$	1
Interest rate contracts	$	9			Cost of sales	$	10		(11)
Foreign exchange contracts		2	$	36	Other expense, net		(1)		(1)
Total cash flow hedges	$	11	$	36		$	9	$	(11)

(1) The amount of hedge ineffectiveness at September 30, 2018 and 2017 was insignificant.

Not Designated as Hedging Instrument [Member]

Effect on Consolidated Financial Statements

		Gain (loss) recognized in income
		Three months ended				Nine months ended
	Location of gain/(loss)	September 30,				September 30,
Undesignated derivatives	recognized in income	2018		2017		2018		2017
Foreign exchange contracts   – balance sheet and loans	Other income (expense), net	$	10	$	(7)	$	19	$	(19)
Foreign currency hedges   related to translated earnings	Translated earnings   contract gain (loss), net		230		26		66		(193)
Total undesignated		$	240	$	19	$	85	$	(212)

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Fair Value Measurements (Tables)

9 Months Ended

Sep. 30, 2018

Fair Value Measurements [Abstract]

Major Categories of Financial Assets and Liabilities Measured on a Recurring Basis

			Fair value measurements at reporting date using
			Quoted prices in	Significant other		Significant
			active markets for	observable		unobservable
	September 30,		identical assets	inputs		inputs
	2018		(Level 1)	(Level 2)		(Level 3)
Current assets:
Other current assets (1)	$	189		$	189
Non-current assets:
Investments (2)	$	32				$	32
Other assets (1)	$	66		$	66
Current liabilities:
Other accrued liabilities (1)	$	50		$	50
Non-current liabilities:
Other liabilities (1)(3)	$	307		$	287	$	20

(1) Derivative assets and liabilities include foreign exchange contracts which are measured using observable inputs for similar assets and liabilities.

(2) One of the Company’s equity securities was measured using unobservable (Level 3) inputs, in the amount of $32 million.

(3) Other liabilities include contingent consideration that was measured using unobservable (Level 3) inputs, in the amount of $20 million.

			Fair value measurements at reporting date using
			Quoted prices in	Significant other		Significant
			active markets for	observable		unobservable
	December 31,		identical assets	inputs		inputs
	2017		(Level 1)	(Level 2)		(Level 3)
Current assets:
Other current assets (1)(2)	$	497		$	197	$	300
Non-current assets:
Other assets (1)	$	68		$	68
Current liabilities:
Other accrued liabilities (1)(2)	$	44		$	42	$	2
Non-current liabilities:
Other liabilities (1)(2)	$	353		$	333	$	20

(1) Derivative assets and liabilities include foreign exchange contracts which are measured using observable inputs for similar assets and liabilities.

(2) At December 31, 2017, other current assets, other accrued liabilities and other liabilities include contingent consideration that was measured using unobservable (Level 3) inputs, in the amounts of $300 million, $2 million and $20 million, respectively.

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Shareholders' Equity (Tables)

9 Months Ended

Sep. 30, 2018

Accumulated Foreign Currency Adjustment Attributable to Parent [Member]

Accumulated Other Comprehensive Income (Loss)

	Three months ended				Nine months ended
	September 30,				September 30,
	2018		2017		2018		2017
Beginning balance	$	(693)	$	(871)	$	(529)	$	(1,275)
Other comprehensive (loss) income (2)		(128)		49		(281)		435
Equity method affiliates (3)				4		(11)		22
Net current-period other comprehensive (loss) income - foreign currency translation adjustment		(128)		53		(292)		457
Ending balance	$	(821)	$	(818)	$	(821)	$	(818)

(1) All amounts are after tax.  Amounts in parentheses indicate debits to accumulated other comprehensive loss.

(2) For the three months ended September 30, 2018 and 2017, tax amounts are not significant.  For thenine months ended September 30, 2018 and 2017, amounts are net of tax benefit of $28 million and tax expense of $47 million, respectively.

(3) Tax effects are not significant.

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Reportable Segments (Tables)

9 Months Ended

Sep. 30, 2018

Reportable Segments [Abstract]

Reportable Segments

	Display		Optical		Specialty		Environmental		Life		All
	Technologies		Communications		Materials		Technologies		Sciences		Other		Total
Three months ended
September 30, 2018
Segment net sales	$	852	$	1,117	$	459	$	331	$	231	$	55	$	3,045
Depreciation (1)	$	146	$	55	$	34	$	30	$	12	$	10	$	287
Research, development and    engineering expenses (2)	$	26	$	53	$	43	$	28	$	5	$	58	$	213
Income tax (provision)    benefit	$	(57)	$	(46)	$	(31)	$	(16)	$	(8)	$	19	$	(139)
Segment net income (loss) (3)	$	218	$	168	$	116	$	60	$	30	$	(72)	$	520

	Display		Optical		Specialty		Environmental		Life		All
	Technologies		Communications		Materials		Technologies		Sciences		Other		Total
Three months ended
September 30, 2017
Segment net sales	$	795	$	917	$	373	$	277	$	223	$	50	$	2,635
Depreciation (1)	$	134	$	49	$	34	$	31	$	14	$	12	$	274
Research, development and    engineering expenses (2)	$	21	$	44	$	38	$	28	$	6	$	53	$	190
Income tax (provision)    benefit	$	(56)	$	(35)	$	(22)	$	(11)	$	(7)	$	17	$	(114)
Segment net income (loss) (3)	$	211	$	132	$	86	$	40	$	25	$	(64)	$	430

	Display		Optical		Specialty		Environmental		Life		All
	Technologies		Communications		Materials		Technologies		Sciences		Other		Total
Nine Months Ended
September 30, 2018
Segment net sales	$	2,377	$	3,026	$	1,080	$	970	$	708	$	156	$	8,317
Depreciation (1)	$	436	$	160	$	102	$	89	$	39	$	31	$	857
Research, development and    engineering expenses (2)	$	76	$	153	$	123	$	86	$	15	$	174	$	627
Income tax (provision)    benefit	$	(157)	$	(117)	$	(60)	$	(44)	$	(23)	$	60	$	(341)
Segment net income (loss) (3)	$	595	$	427	$	226	$	166	$	88	$	(224)	$	1,278

	Display		Optical		Specialty		Environmental		Life		All
	Technologies		Communications		Materials		Technologies		Sciences		Other		Total
Nine Months Ended
September 30, 2017
Segment net sales	$	2,354	$	2,617	$	1,010	$	815	$	654	$	133	$	7,583
Depreciation (1)	$	393	$	142	$	94	$	93	$	39	$	34	$	795
Research, development and    engineering expenses (2)	$	63	$	121	$	111	$	80	$	18	$	157	$	550
Income tax (provision)    benefit	$	(180)	$	(100)	$	(56)	$	(33)	$	(19)	$	48	$	(340)
Segment net income (loss) (3)	$	682	$	370	$	213	$	122	$	71	$	(186)	$	1,272

(1) Depreciation expense for Corning’s reportable segments includes an allocation of depreciation of corporate property not specifically identifiable to a segment.

(2) Research, development and engineering expenses include direct project spending that is identifiable to a segment.

(3) Many of Corning’s administrative and staff functions are performed on a centralized basis.  Where practicable, Corning charges these expenses to segments based upon the extent to which each business uses a centralized function.  Other staff functions, such as corporate finance, human resources and legal, are allocated to segments, primarily as a percentage of sales.  Expenses that are not allocated to the segments are included in the reconciliation of reportable segment net income to consolidated net income below.

Reconciliation of Reportable Segment and All Other Net Sales to Consolidated Net Sales)

	Three months ended				Nine months ended
	September 30,				September 30,
	2018		2017		2018		2017
Net sales of reportable segments and All Other	$	3,045	$	2,635	$	8,317	$	7,583
Impact of foreign currency movements (1)		(37)		(28)		(62)		(104)
Net sales	$	3,008	$	2,607	$	8,255	$	7,479

(1)This amount primarily represents the impact of foreign currency adjustments in the Display Technologies segment.

Reconciliation of Reportable Segment Net Income to Consolidated Net Income

	Three months ended				Nine months ended
	September 30,				September 30,
	2018		2017		2018		2017
Net income of reportable segments	$	592	$	494	$	1,502	$	1,458
Net loss of All Other		(72)		(64)		(224)		(186)
Unallocated amounts:
Impact of foreign currency movements		(42)		(34)		(110)		(124)
Gain (loss) on foreign currency hedges       related to translated earnings		230		26		66		(193)
Translation gain on Japanese yen-denominated debt		30		14		28		14
Litigation, regulatory and other legal matters		(11)				(143)		12
Research, development, and engineering expense		(31)		(25)		(99)		(72)
Equity in earnings of affiliated companies (1)		31		29		100		139
Amortization of intangibles		(27)		(18)		(68)		(53)
Interest expense, net		(38)		(27)		(111)		(79)
Income tax benefit (provision)		6		25		(42)		164
Other corporate items		(43)		(30)		(125)		(165)
Net income	$	625	$	390	$	774	$	915

(1) Primarily represents the equity earnings of HSG.

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Revenue (Narrative) (Details) - USD ($) $ in Millions	9 Months Ended	12 Months Ended
	Sep. 30, 2018	Dec. 31, 2017
Revenue [Abstract]
Customer deposits	$ 1,000
Long-term supply commitment	10 years
Credit memoranda issued	$ 0	$ 0

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Revenue (Disaggregation of Revenue) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Revenues by Products Categories	$ 3,008	$ 2,607	$ 8,255	$ 7,479
Display Products [Member]
Revenues by Products Categories	815	767	2,315	2,250
Telecommunication Products [Member]
Revenues by Products Categories	1,117	917	3,026	2,617
Specialty Glass Products [Member]
Revenues by Products Categories	459	373	1,080	1,010
Environmental Substrate and Filter Products [Member]
Revenues by Products Categories	331	277	970	815
Life Science Products [Member]
Revenues by Products Categories	231	223	708	654
All Other Products [Member]
Revenues by Products Categories	$ 55	$ 50	$ 156	$ 133

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Commitments, Contingencies and Guarantees (Narrative) (Details) $ in Millions	1 Months Ended		9 Months Ended
	Jun. 30, 2018 USD ($)	Jun. 30, 2017 USD ($)	Sep. 30, 2018 USD ($) item	Dec. 31, 2017 USD ($)	Dec. 31, 2016 USD ($)	Aug. 25, 2016 USD ($)	May 31, 2016 USD ($)
Loss Contingency, Accrual, Current			$ 148	$ 41
Loss Contingency, Accrual, Noncurrent			279	338
Dow Corning Breast Implant Litigation [Member]
Payment of claims			1,800
Loss Contingency, Accrual			263				$ 290
Dow Corning Bankruptcy Pendency Interest Claims [Member]
Loss Contingency, Accrual			$ 81				$ 107
Indemnification of excess liability			50.00%
Amended Pittsburgh Corning Corporation Plan [Member] | Asbestos Litigation [Member]
Payment of claims	$ 35	$ 70
Loss Contingency, Accrual			$ 185		$ 290
Loss Contingency, Accrual, Current			50
Loss Contingency, Accrual, Noncurrent			$ 135
Pittsburgh Corning Corporation PCC [Member]
Equity Method Investment, Ownership Percentage			50.00%
Pittsburgh Corning Corporation PCC [Member] | PPG Industries, Inc. [Member]
Equity Method Investment, Ownership Percentage			50.00%
Dow Corning Corporation [Member]
Equity Method Investment, Ownership Percentage							50.00%
Investment in affiliated companies, at equity							$ 4,800
Environmental Cleanup and Related Litigation [Member]
Number of Hazardous Waste Sites | item			15
Accrual for Environmental Loss Contingencies			$ 33	38
Non-PCC Asbestos Litigation [Member] | Asbestos Litigation [Member]
Loss Contingency, Accrual, Noncurrent			$ 147	$ 147		$ 150
Undiscounted Projection of Claims and Related Legal Fees Period			20 years
Minimum [Member] | Dow Corning Bankruptcy Pendency Interest Claims [Member]
Loss Contingency, Estimate of Possible Loss			$ 81
Maximum [Member] | Dow Corning Bankruptcy Pendency Interest Claims [Member]
Loss Contingency, Estimate of Possible Loss			$ 260

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Debt (Narrative) (Details) $ in Millions	9 Months Ended
	Sep. 30, 2018 USD ($)	Sep. 30, 2017 USD ($)	Sep. 30, 2018 JPY (¥)	Sep. 30, 2018 USD ($)	Dec. 31, 2017 USD ($)
Debt Instrument, Fair Value Disclosure				$ 5,100	$ 5,100
Line of Credit Facility, Maximum Borrowing Capacity				1,500
Line of credit outstanding				0
Long-term debt				5,056	4,749
Proceeds from Issuance of Unsecured Debt	$ 596	$ 702
Commercial paper				$ 0	$ 0
0.722% Note 7 year term [Member]
Debt Instrument, Face Amount | ¥			¥ 10,000,000,000
Debt Instrument, Interest Rate, Stated Percentage			0.722%	0.722%
Debt Instrument, Term	7 years
1.043% Note 10 year term [Member]
Debt Instrument, Face Amount | ¥			¥ 30,500,000,000
Debt Instrument, Interest Rate, Stated Percentage			1.043%	1.043%
Debt Instrument, Term	10 years
1.219% Note 12 year term [Member]
Debt Instrument, Face Amount | ¥			¥ 25,000,000,000
Debt Instrument, Interest Rate, Stated Percentage			1.219%	1.219%
Debt Instrument, Term	12 years

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Income Taxes (Narrative) (Details) - USD ($) $ in Millions	3 Months Ended			9 Months Ended		12 Months Ended
	Sep. 30, 2018	Mar. 31, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017	Dec. 31, 2017
Tax Cuts and Jobs Act of 2017, Incomplete Accounting, Change in Tax Rate, Deferred Tax Asset, Provisional Income Tax Expense (Benefit)						$ 347
Tax Cuts and Jobs Act of 2017, Incomplete Accounting, Transition Tax for Accumulated Foreign Earnings, Provisional Income Tax Expense (Benefit)						$ 1,100
Release of a valuation allowance on deferred tax assets, benefit				$ 28
One-time toll charge	$ 48			$ 48
Statutory U.S. income tax rate	21.00%		35.00%	21.00%	35.00%	35.00%
Foreign Earnings Repatriated				$ 2,200
Income Tax as result of agreement		$ 172		$ 172
Interest expense, net of tax benefit		$ 12
Maximum [Member]
Income tax examination period				2 years

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Income Taxes (Provision for Income Taxes) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Income Taxes [Abstract]
Provision for income taxes	$ (133)	$ (89)	$ (383)	$ (176)
Effective tax rate	17.50%	18.60%	33.10%	16.10%

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Earnings per Common Share (Computation of Basic and Diluted Earnings per Common Share) (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Net income attributable to Corning Incorporated	$ 625	$ 390	$ 774	$ 915
Less: Series A convertible preferred stock dividend	24	24	73	73
Net income available to common stockholders – basic	601	366	701	842
Plus: Series A convertible preferred stock dividend	24	24	73	73
Net income available to common stockholders – diluted	$ 625	$ 390	$ 774	$ 915
Weighted-average common shares outstanding - basic (in shares)	805	883	824	905
Effect of dilutive securities:
Stock options and other dilutive securities (in shares)	10	11	9	11
Weighted-average common shares outstanding - diluted (in shares)	930	1,009	948	1,031
Basic earnings per common share (in dollars per share)	$ 0.75	$ 0.41	$ 0.85	$ 0.93
Diluted earnings per common share (in dollars per share)	$ 0.67	$ 0.39	$ 0.82	$ 0.89
Anti-dilutive potential shares excluded from diluted earnings per common share:
Antidilutive potential shares excluded from diluted earnings per common share (in shares)	1	1	2	2
Employee Stock Options and Awards [Member]
Anti-dilutive potential shares excluded from diluted earnings per common share:
Antidilutive potential shares excluded from diluted earnings per common share (in shares)	1	1	2	2
Series A Convertible Preferred Stock [Member]
Effect of dilutive securities:
Stock options and other dilutive securities (in shares)	115	115	115	115

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Inventories, Net of Inventory Reserves (Inventories, Net) (Details) - USD ($) $ in Millions	Sep. 30, 2018	Dec. 31, 2017
Inventories, Net of Inventory Reserves [Abstract]
Finished goods	$ 801	$ 739
Work in process	367	322
Raw materials and accessories	380	306
Supplies and packing materials	373	345
Total inventories, net of inventory reserves	$ 1,921	$ 1,712

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Acquisition (Narrative) (Details) - 3M Communications Market Division [Member] - USD ($) $ in Millions		9 Months Ended
	Jun. 01, 2018	Sep. 30, 2018
Business Combination, Consideration Transferred	$ 801
Business Combination, Acquisition Related Costs		$ 16
Minimum [Member]
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life		3 years
Maximum [Member]
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life		14 years

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Acquisition (Recognized Amounts of Identified Assets Acquired and Liabilities Assumed) (Details) - USD ($) $ in Millions	Jun. 01, 2018	Sep. 30, 2018	Dec. 31, 2017
Goodwill		$ 1,930	$ 1,694
Optical Communications [Member]
Goodwill		917	671
Display Technologies [Member]
Goodwill		$ 132	$ 136
3M Communications Market Division [Member]
Fixed assets	$ 32
Other net assets	5
Other intangible assets	511
Net tangible and intangible assets	548
Purchase price	801
Goodwill	$ 253

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Goodwill and Other Intangible Assets (Narrative) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017	Dec. 31, 2017
Goodwill, Impairment Loss			$ 6,500		$ 6,500
Goodwill, Gross	$ 8,400		8,400		$ 8,200
Amortization of intangibles	27	$ 18	68	$ 53
Finite-Lived Intangible Assets, Amortization Expense, 2019	112		112
Finite-Lived Intangible Assets, Amortization Expense, 2020	111		111
Finite-Lived Intangible Assets, Amortization Expense, 2021	110		110
Finite-Lived Intangible Assets, Amortization Expense, 2022	110		110
Finite-Lived Intangible Assets, Amortization Expense, 2023	$ 109		109
3M Communications Market Division [Member]
Finite-lived Intangible Assets Acquired			511
Amortization of intangibles			68
Finite Lived Intangible Assets, Foreign Currency Translation Gain (Loss)			10
Other Acquisition [Member]
Finite-lived Intangible Assets Acquired			$ 7

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Goodwill and Other Intangible Assets (Carrying Amount of Goodwill by Segment) (Details) $ in Millions	9 Months Ended
	Sep. 30, 2018 USD ($)
Balance	$ 1,694
Acquired goodwill	244	[1]
Measurement period adjustment	11
Foreign currency translation adjustment	(19)
Balance	1,930
Display Technologies [Member]
Balance	136
Foreign currency translation adjustment	(4)
Balance	132
Optical Communications [Member]
Balance	671
Acquired goodwill	242	[1]
Measurement period adjustment	11
Foreign currency translation adjustment	(7)
Balance	917
Specialty Materials [Member]
Balance	150
Balance	150
Life Sciences [Member]
Balance	623
Acquired goodwill	2	[1]
Foreign currency translation adjustment	(6)
Balance	619
All Other [Member]
Balance	114
Foreign currency translation adjustment	(2)
Balance	$ 112

[1] The Company completed the acquisition of 3M's Communications Market Division in the Optical Communications segment during the second quarter of 2018. Refer to Note 8 (Acquisitions) to the Consolidated Financial Statements for additional information on this acquisition.

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Goodwill and Other Intangible Assets (Other Intangible Assets) (Details) - USD ($) $ in Millions	Sep. 30, 2018	Dec. 31, 2017
Amortized intangible assets:
Other intangible assets, gross	$ 1,764	$ 1,266
Other intangible assets, accumulated amortization	455	397
Other intangible assets, net	1,309	869
Patents, Trademarks, and Trade Names [Member]
Amortized intangible assets:
Other intangible assets, gross	465	382
Other intangible assets, accumulated amortization	198	188
Other intangible assets, net	267	194
Customer Lists and Other [Member]
Amortized intangible assets:
Other intangible assets, gross	1,299	884
Other intangible assets, accumulated amortization	257	209
Other intangible assets, net	$ 1,042	$ 675

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Employee Retirement Plans (Net Periodic Benefit Expense) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Pension Benefits [Member]
Service cost	$ 26	$ 22	$ 77	$ 69
Interest cost	32	32	97	94
Expected return on plan assets	(47)	(43)	(142)	(130)
Amortization of prior service cost (credit)	2	1	6	4
Recognition of actuarial loss			1	15
Total pension and postretirement benefit expense	13	12	39	52
Postretirement Benefits [Member]
Service cost	3	2	9	7
Interest cost	6	7	18	20
Amortization of prior service cost (credit)	(2)	(1)	(5)	(2)
Total pension and postretirement benefit expense	$ 7	$ 8	$ 22	$ 25

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Other Liabilities (Other Liabilities) (Details) - USD ($) $ in Millions		Sep. 30, 2018	Dec. 31, 2017
Other Liabilities [Abstract]
Wages and employee benefits		$ 533	$ 620
Income taxes		252	148
Derivative instruments		50	42
Asbestos and other litigation (Note 3)		148	41
Other current liabilities		785	540
Other accrued liabilities		1,768	1,391
Defined benefit pension plan liabilities		783	713
Derivative instruments		287	333
Asbestos and other litigation (Note 3)		279	338
Investment in Hemlock Semiconductor Group ("HSG")	[1]	113	105
Customer deposits (Note 2)		923	382
Deferred tax liabilities		328	451
Other non-current liabilities		832	695
Other liabilities		$ 3,545	$ 3,017

[1] The negative carrying value resulted from a one-time charge to this entity in 2014 for the permanent abandonment of certain assets.

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Hedging Activities (Narrative) (Details) - USD ($) $ in Millions	Sep. 30, 2018	Dec. 31, 2017
Derivative Asset, Notional Amount	$ 17,041	$ 15,718
Gross Notional Value, Translated Earnings Contracts [Member]
Derivative Asset, Notional Amount	14,700	14,300
Gross Notional Value, Collar Options [Member]
Derivative Asset, Notional Amount	2,600	1,300
Gross Notional Value, Foreign Exchange Forward [Member]
Derivative Asset, Notional Amount	12,100	13,000
Gross Notional Value, Foreign Exchange Forward [Member] | Not Designated as Hedging Instrument [Member]
Derivative Asset, Notional Amount	$ 9,700	$ 11,700

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Hedging Activities (Summary of Notional Amounts and Respective Fair Values of Derivative Financial Instruments) (Details) - USD ($) $ in Millions	Sep. 30, 2018	Dec. 31, 2017
Notional amount	$ 17,041	$ 15,718
Asset derivatives, fair value	255	265
Liability derivatives, fair value	(337)	(374)
Other Liabilities [Member]
Liability derivatives, fair value	(8)	(8)
Foreign Exchange Contracts [Member] | Designated as Hedging Instrument [Member]
Notional amount	376	294
Foreign Exchange Contracts [Member] | Designated as Hedging Instrument [Member] | Other Current Assets [Member]
Asset derivatives, fair value	12	20
Foreign Exchange Contracts [Member] | Designated as Hedging Instrument [Member] | Other Assets [Member]
Asset derivatives, fair value	2	1
Foreign Exchange Contracts [Member] | Not Designated as Hedging Instrument [Member]
Notional amount	1,136	599
Foreign Exchange Contracts [Member] | Not Designated as Hedging Instrument [Member] | Other Current Assets [Member]
Asset derivatives, fair value	9	2
Foreign Exchange Contracts [Member] | Not Designated as Hedging Instrument [Member] | Other Accrued Liabilities [Member]
Liability derivatives, fair value	(8)	(7)
Interest Rate Contracts [Member] | Designated as Hedging Instrument [Member]
Notional amount	850	550
Interest Rate Contracts [Member] | Designated as Hedging Instrument [Member] | Other Current Assets [Member]
Asset derivatives, fair value	9
Interest Rate Contracts [Member] | Designated as Hedging Instrument [Member] | Other Accrued Liabilities [Member]
Liability derivatives, fair value	(2)
Translated Earnings Contracts [Member] | Not Designated as Hedging Instrument [Member]
Notional amount	14,679	14,275
Translated Earnings Contracts [Member] | Not Designated as Hedging Instrument [Member] | Other Current Assets [Member]
Asset derivatives, fair value	159	176
Translated Earnings Contracts [Member] | Not Designated as Hedging Instrument [Member] | Other Assets [Member]
Asset derivatives, fair value	64	66
Translated Earnings Contracts [Member] | Not Designated as Hedging Instrument [Member] | Other Accrued Liabilities [Member]
Liability derivatives, fair value	(40)	(34)
Translated Earnings Contracts [Member] | Not Designated as Hedging Instrument [Member] | Other Liabilities [Member]
Liability derivatives, fair value	$ (279)	$ (325)

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Hedging Activities (Effect on Consolidated Financial Statements) (Details) - Cash Flow Hedging [Member] - USD ($) $ in Millions	3 Months Ended			9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017		Sep. 30, 2018	Sep. 30, 2017
Gain recognized in other comprehensive income (OCI)	$ 31	$ 3		$ 11	$ 36
Gain/(loss) reclassified from accumulated OCI into income (effective)	4	(1)	[1]	9	(11)
Interest Rate Contracts [Member]
Gain recognized in other comprehensive income (OCI)	12			9
Interest Rate Contracts [Member] | Sales [Member]
Gain/(loss) reclassified from accumulated OCI into income (effective)					1
Interest Rate Contracts [Member] | Cost of Sales [Member]
Gain/(loss) reclassified from accumulated OCI into income (effective)				10	(11)
Foreign Exchange Contracts [Member]
Gain recognized in other comprehensive income (OCI)	19	3		2	36
Foreign Exchange Contracts [Member] | Other Expense [Member]
Gain/(loss) reclassified from accumulated OCI into income (effective)	$ 4	$ (1)	[1]	$ (1)	$ (1)

[1] The amount of hedge ineffectiveness at September 30, 2018 and 2017 was insignificant.

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Hedging Activities (Effect on Consolidated Financial Statements) (Details) - Not Designated as Hedging Instrument [Member] - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Gain (loss) recognized in income	$ 240	$ 19	$ 85	$ (212)
Foreign Exchange Contracts, Balance Sheet [Member] | Foreign Currency Transaction and Hedge Gain (Loss), Net [Member]
Gain (loss) recognized in income	10	(7)	19	(19)
Translated Earnings Contracts [Member] | Foreign Currency Transaction and Hedge Gain (Loss), Net [Member]
Gain (loss) recognized in income	$ 230	$ 26	$ 66	$ (193)

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Fair Value Measurements (Narrative) (Details) - USD ($) $ in Millions	Sep. 30, 2018	Dec. 31, 2017
Business Combination, Contingent Consideration, Asset		$ 300
Fair Value, Measurements, Nonrecurring [Member]
Assets, Fair Value Disclosure	$ 0	0
Liabilities, Fair Value Disclosure	$ 0	$ 0

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Fair Value Measurements (Major Categories of Financial Assets and Liabilities Measured on a Recurring Basis) (Details) - USD ($) $ in Millions		Sep. 30, 2018		Dec. 31, 2017
Other current assets		$ 189	[1]	$ 497	[2],[3]
Other assets	[3]			68
Other accrued liabilities		50	[1]	44	[2],[3]
Other liabilities		307	[1],[4]	353	[2],[3]
Significant Other Observable Inputs (Level 2) [Member]
Other current assets		189	[1]	197	[2],[3]
Other assets	[3]			68
Other accrued liabilities		50	[1]	42	[2],[3]
Other liabilities		287	[1],[4]	333	[2],[3]
Significant Unobservable Inputs (Level 3) [Member]
Other current assets	[2],[3]			300
Other accrued liabilities	[2],[3]			2
Other liabilities		20	[1],[4]	20	[2],[3]
Other Current Assets [Member]
Contingent consideration				300
Investments [Member]
Other assets	[5]	32
Investments [Member] | Significant Unobservable Inputs (Level 3) [Member]
Other assets	[5]	32
Other Noncurrent Assets [Member]
Other assets	[1]	66
Other Noncurrent Assets [Member] | Significant Other Observable Inputs (Level 2) [Member]
Other assets	[1]	66
Other Accrued Liabilities [Member]
Contingent consideration				2
Other Liabilities [Member]
Contingent consideration		$ 20		$ 20

[1] Derivative assets and liabilities include foreign exchange contracts which are measured using observable inputs for similar assets and liabilities.

[2] At December 31, 2017, other current assets, other accrued liabilities and other liabilities include contingent consideration that was measured using unobservable (Level 3) inputs, in the amounts of $300 million, $2 million and $20 million, respectively.

[3] Derivative assets and liabilities include foreign exchange contracts which are measured using observable inputs for similar assets and liabilities.

[4] Other liabilities include contingent consideration that was measured using unobservable (Level 3) inputs, in the amount of $20 million.

[5] One of the Company's equity securities was measured using unobservable (Level 3) inputs, in the amount of $32 million.

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Shareholders' Equity (Narrative) (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended			9 Months Ended		12 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Jun. 30, 2017	Sep. 30, 2018	Sep. 30, 2017	Dec. 31, 2017	Apr. 26, 2018	Dec. 31, 2016
Preferred Stock, Par or Stated Value Per Share	$ 100			$ 100		$ 100
Treasury Stock, Shares, Acquired						84,400,000
Treasury Stock, Value, Acquired						$ 2.4
Payments for Repurchase of Common Stock				$ 1,880.0	$ 2,064.0
The 2016 Repurchase Program [Member]
Stock Repurchase Program, Authorized Amount								$ 4,000.0
The 2015 and 2016 Repurchase Program [Member] | Open Market [Member]
Treasury Stock, Shares, Acquired						50,100,000
Treasury Stock, Value, Acquired						$ 1,400.0
The 2017 ASR Agreement [Member]
Treasury Stock, Shares, Acquired		17,200,000	17,100,000
Payments for Repurchase of Common Stock		$ 500.0	$ 500.0
The 2018 Repurchase Program [Member]
Stock Repurchase Program, Authorized Amount							$ 2,000.0
The 2016 and 2018 Repurchase Program [Member] | Open Market [Member]
Treasury Stock, Shares, Acquired	11,800,000			63,400,000
Treasury Stock, Value, Acquired	$ 384.0			$ 1,900.0
Common Stock [Member]
Convertible Preferred Stock, Shares Issued upon Conversion	50,000			50,000
Series A Convertible Preferred Stock [Member] | Samsung Corning Precision Materials Co., Ltd. [Member]
Convertible Preferred Stock, Shares Issued upon Conversion	2,300			2,300

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Shareholders' Equity (Accumulated Other Comprehensive Income (Loss)) (Details) - USD ($) $ in Millions		3 Months Ended		9 Months Ended
		Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Balance				$ 15,770
Net current-period other comprehensive income		$ (101)	$ 55	(294)	$ 530
Balance		13,978		13,978
Accumulated Foreign Currency Adjustment Attributable to Parent [Member]
Balance	[1]	(693)	(871)	(529)	(1,275)
Other comprehensive income	[1],[2]	(128)	49	(281)	435
Equity method affiliates	[1],[3]		4	(11)	22
Net current-period other comprehensive income	[1]	(128)	53	(292)	457
Balance	[1]	$ (821)	$ (818)	(821)	(818)
Other Comprehensive Income, Tax				$ 28	$ 47

[1] All amounts are after tax. Amounts in parentheses indicate debits to accumulated other comprehensive loss.

[2] For the three months ended September 30, 2018 and 2017, tax amounts are not significant. For the nine months ended September 30, 2018 and 2017, amounts are net of tax benefit of $28 million and tax expense of $47 million, respectively.

[3] Tax effects are not significant.

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Reportable Segments (Narrative) (Details)	9 Months Ended
	Sep. 30, 2018 item
Reportable Segments [Abstract]
Number of Material Formulations	150
Segment tax rate	21.00%

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Reportable Segments (Reportable Segments) (Details) - USD ($) $ in Millions		3 Months Ended		9 Months Ended
		Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Net sales		$ 3,008	$ 2,607	$ 8,255	$ 7,479
Depreciation				895	799
Research, development and engineering expenses		244	215	728	623
Income tax (provision) benefit		(133)	(89)	(383)	(176)
Net income		625	390	774	915
Operating Segments [Member]
Net sales		3,045	2,635	8,317	7,583
Depreciation	[1]	(287)	274	857	795
Research, development and engineering expenses	[2]	213	190	627	550
Income tax (provision) benefit		(139)	(114)	(341)	(340)
Net income	[3]	520	430	1,278	1,272
Display Technologies [Member] | Operating Segments [Member]
Net sales		852	795	2,377	2,354
Depreciation	[1]	(146)	134	436	393
Research, development and engineering expenses	[2]	26	21	76	63
Income tax (provision) benefit		(57)	(56)	(157)	(180)
Net income	[3]	218	211	595	682
Optical Communications [Member] | Operating Segments [Member]
Net sales		1,117	917	3,026	2,617
Depreciation	[1]	(55)	49	160	142
Research, development and engineering expenses	[2]	53	44	153	121
Income tax (provision) benefit		(46)	(35)	(117)	(100)
Net income	[3]	168	132	427	370
Specialty Materials [Member] | Operating Segments [Member]
Net sales		459	373	1,080	1,010
Depreciation	[1]	(34)	34	102	94
Research, development and engineering expenses	[2]	43	38	123	111
Income tax (provision) benefit		(31)	(22)	(60)	(56)
Net income	[3]	116	86	226	213
Environmental Technologies [Member] | Operating Segments [Member]
Net sales		331	277	970	815
Depreciation	[1]	(30)	31	89	93
Research, development and engineering expenses	[2]	28	28	86	80
Income tax (provision) benefit		(16)	(11)	(44)	(33)
Net income	[3]	60	40	166	122
Life Sciences [Member] | Operating Segments [Member]
Net sales		231	223	708	654
Depreciation	[1]	(12)	14	39	39
Research, development and engineering expenses	[2]	5	6	15	18
Income tax (provision) benefit		(8)	(7)	(23)	(19)
Net income	[3]	30	25	88	71
All Other [Member] | Operating Segments [Member]
Net sales		55	50	156	133
Depreciation	[1]	(10)	12	31	34
Research, development and engineering expenses	[2]	58	53	174	157
Income tax (provision) benefit		19	17	60	48
Net income	[3]	$ (72)	$ (64)	$ (224)	$ (186)

[1] Depreciation expense for Corning's reportable segments includes an allocation of depreciation of corporate property not specifically identifiable to a segment.

[2] Research, development and engineering expenses include direct project spending that is identifiable to a segment.

[3] Many of Corning's administrative and staff functions are performed on a centralized basis. Where practicable, Corning charges these expenses to segments based upon the extent to which each business uses a centralized function. Other staff functions, such as corporate finance, human resources and legal, are allocated to segments, primarily as a percentage of sales. Expenses that are not allocated to the segments are included in the reconciliation of reportable segment net income to consolidated net income below.

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Reportable Segments (Reconciliation of Reportable Segment and All Other Net Sales to Consolidated Net Sales) (Details) - USD ($) $ in Millions		3 Months Ended		9 Months Ended
		Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Reportable Segments [Abstract]
Net sales of reportable segments and All Other		$ 3,045	$ 2,635	$ 8,317	$ 7,583
Impact of foreign currency movements	[1]	(37)	(28)	(62)	(104)
Net sales		$ 3,008	$ 2,607	$ 8,255	$ 7,479

[1] This amount primarily represents the impact of foreign currency adjustments in the Display Technologies segment.

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Reportable Segments (Reconciliation of Reportable Segment Net Income to Consolidated Net Income) (Details) - USD ($) $ in Millions		3 Months Ended		9 Months Ended
		Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Segment Reporting, Revenue Reconciling Item [Line Items]
Research, development and engineering expenses		$ (244)	$ (215)	$ (728)	$ (623)
Equity in earnings of affiliated companies		32	31	102	148
Amortization of intangibles		27	18	68	53
Interest expense		(45)	(37)	(140)	(112)
Income tax (provision) benefit		(133)	(89)	(383)	(176)
Net income		625	390	774	915
Operating Segments [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Research, development and engineering expenses	[1]	(213)	(190)	(627)	(550)
Income tax (provision) benefit		(139)	(114)	(341)	(340)
Net income	[2]	520	430	1,278	1,272
Operating Segments [Member] | Reportable Segments [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Net income		592	494	1,502	1,458
Operating Segments [Member] | Non Reportable Segments [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Net income		(72)	(64)	(224)	(186)
Segment Reconciling Items [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Impact of foreign currency movements not included in segment net income (loss)		(42)	(34)	(110)	(124)
Gain (loss) on foreign currency hedges related to translated earnings		230	26	66	(193)
Translation gain (loss) on Japanese yen-denominated debt		30	14	28	14
Litigation, regulatory and other legal matters		(11)		(143)	12
Research, development and engineering expenses		(31)	(25)	(99)	(72)
Equity in earnings of affiliated companies	[3]	31	29	100	139
Amortization of intangibles		(27)	(18)	(68)	(53)
Interest expense		(38)	(27)	(111)	(79)
Income tax (provision) benefit		6	25	(42)	164
Other corporate items		$ (43)	$ (30)	$ (125)	$ (165)

[1] Research, development and engineering expenses include direct project spending that is identifiable to a segment.

[2] Many of Corning's administrative and staff functions are performed on a centralized basis. Where practicable, Corning charges these expenses to segments based upon the extent to which each business uses a centralized function. Other staff functions, such as corporate finance, human resources and legal, are allocated to segments, primarily as a percentage of sales. Expenses that are not allocated to the segments are included in the reconciliation of reportable segment net income to consolidated net income below.

[3] Primarily represents the equity earnings of HSG.