Corning (GLW) 10-Q 27 Oct 16 2016 Q3 Quarterly report Financial data

Document And Entity Information

Document And Entity Information - shares	9 Months Ended
	Sep. 30, 2016	Oct. 14, 2016
Document Information [Line Items]
Entity Registrant Name	CORNING INC /NY
Entity Central Index Key	24,741
Trading Symbol	glw
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Entity Current Reporting Status	Yes
Entity Voluntary Filers	No
Entity Well-known Seasoned Issuer	Yes
Entity Common Stock, Shares Outstanding (in shares)		951,225,180
Document Type	10-Q
Document Period End Date	Sep. 30, 2016
Document Fiscal Year Focus	2,016
Document Fiscal Period Focus	Q3
Amendment Flag	false

Consolidated Statements of Inco

Consolidated Statements of Income (Unaudited) - USD ($)		3 Months Ended		9 Months Ended
		Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Net sales		$ 2,507,000,000	$ 2,272,000,000	$ 6,914,000,000	$ 6,880,000,000
Cost of sales		1,466,000,000	1,380,000,000	4,158,000,000	4,084,000,000
Gross margin		1,041,000,000	892,000,000	2,756,000,000	2,796,000,000
Operating expenses:
Selling, general and administrative expenses		302,000,000	307,000,000	1,104,000,000	960,000,000
Research, development and engineering expenses		187,000,000	181,000,000	569,000,000	561,000,000
Amortization of purchased intangibles		17,000,000	12,000,000	46,000,000	40,000,000
Restructuring, impairment and other charges		0	0	78,000,000	0
Operating income		535,000,000	392,000,000	959,000,000	1,235,000,000
Equity in earnings of affiliated companies		19,000,000	39,000,000	119,000,000	195,000,000
Interest income		9,000,000	6,000,000	21,000,000	16,000,000
Interest expense		(41,000,000)	(38,000,000)	(122,000,000)	(101,000,000)
Translated earnings contract (loss) gain, net		(237,000,000)	(149,000,000)	(2,295,000,000)	42,000,000
Gain			0	2,676,000,000	0
Other expense, net		(28,000,000)	(32,000,000)	(70,000,000)	(70,000,000)
Income before income taxes		257,000,000	218,000,000	1,288,000,000	1,317,000,000
Income tax (provision) benefit		27,000,000	(6,000,000)	835,000,000	(202,000,000)
Net income attributable to Corning Incorporated		$ 284,000,000	$ 212,000,000	$ 2,123,000,000	$ 1,115,000,000
Earnings per common share attributable to Corning Incorporated:
Basic (Note 6) (in dollars per share)		$ 0.27	$ 0.16	$ 1.96	$ 0.84
Diluted (Note 6) (in dollars per share)		0.26	0.15	1.81	0.82
Dividends declared per common share (1) (in dollars per share)	[1]	$ 0.135	$ 0.12	$ 0.405	$ 0.24
[1]	The first quarter 2015 dividend was declared on December 3, 2014.

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income (Unaudited) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Net income	$ 284,000,000	$ 212,000,000	$ 2,123,000,000	$ 1,115,000,000
Foreign currency translation adjustments and other	245,000,000	(181,000,000)	869,000,000	(477,000,000)
Net unrealized (losses) gains on investments			(3,000,000)	1,000,000
Unamortized (losses) gains and prior service credits (costs) for postretirement benefit plans	(5,000,000)	6,000,000	260,000,000	12,000,000
Net unrealized gains (losses) on designated hedges	11,000,000	(37,000,000)	(30,000,000)	(32,000,000)
Other comprehensive income (loss), net of tax (Note 15)	251,000,000	(212,000,000)	1,096,000,000	(496,000,000)
Comprehensive income attributable to Corning Incorporated	$ 535,000,000	$ 0	$ 3,219,000,000	$ 619,000,000

Consolidated Balance Sheets (Un

Consolidated Balance Sheets (Unaudited) - USD ($)	Sep. 30, 2016	Dec. 31, 2015
Current assets:
Cash and cash equivalents	$ 4,821,000,000	$ 4,500,000,000
Short-term investments, at fair value	0	100,000,000
Trade accounts receivable, net of doubtful accounts and allowances - $62 and $48	1,645,000,000	1,372,000,000
Inventories, net of inventory reserves - $160 and $146 (Note 8)	1,516,000,000	1,385,000,000
Other current assets	497,000,000	912,000,000
Total current assets	8,479,000,000	8,269,000,000
Investments (Note 9)	352,000,000	1,975,000,000
Property, plant and equipment, net of accumulated depreciation - $10,206 and $9,188	13,293,000,000	12,648,000,000
Goodwill, net (Note 10)	1,569,000,000	1,380,000,000
Other intangible assets, net (Note 10)	797,000,000	706,000,000
Deferred income taxes (Note 5)	3,110,000,000	2,056,000,000
Other assets	1,209,000,000	1,493,000,000
Total Assets	28,809,000,000	28,527,000,000
Current liabilities:
Current portion of long-term debt and short-term borrowings (Note 4)	7,000,000	572,000,000
Accounts payable	933,000,000	934,000,000
Other accrued liabilities (Note 3 and Note 12)	1,354,000,000	1,308,000,000
Total current liabilities	2,294,000,000	2,814,000,000
Long-term debt (Note 4)	3,916,000,000	3,890,000,000
Postretirement benefits other than pensions (Note 11)	708,000,000	718,000,000
Other liabilities (Note 3 and Note 12)	4,104,000,000	2,242,000,000
Total liabilities	11,022,000,000	9,664,000,000
Shareholders’ equity (Note 15):
Convertible preferred stock, Series A – Par value $100 per share; Shares authorized 3,100; Shares issued: 2,300	2,300,000,000	2,300,000,000
Common stock – Par value $0.50 per share; Shares authorized 3.8 billion; Shares issued: 1,689 million and 1,681 million	844,000,000	840,000,000
Additional paid-in capital – common stock	13,340,000,000	13,352,000,000
Retained earnings	15,460,000,000	13,832,000,000
Treasury stock, at cost; Shares held: 738 million and 551 million	(13,508,000,000)	(9,725,000,000)
Accumulated other comprehensive loss	(715,000,000)	(1,811,000,000)
Total Corning Incorporated shareholders’ equity	17,721,000,000	18,788,000,000
Noncontrolling interests	66,000,000	75,000,000
Total equity	17,787,000,000	18,863,000,000
Total Liabilities and Equity	$ 28,809,000,000	$ 28,527,000,000

Consolidated Balance Sheets (U5

Consolidated Balance Sheets (Unaudited) (Parentheticals) - USD ($) $ in Millions	Sep. 30, 2016	Dec. 31, 2015
Doubtful accounts and allowances	$ 62	$ 48
Inventory reserves	160	146
Accumulated depreciation	$ 10,206	$ 9,188
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)	1,689,000,000	1,681,000,000
Treasury stock, shares held (in shares)	738,000,000	551,000,000

Consolidated Statements of Cash

Consolidated Statements of Cash Flows (Unaudited) - USD ($)	9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015
Cash Flows from Operating Activities:
Net income	$ 2,123,000,000	$ 1,115,000,000
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation	844,000,000	842,000,000
Amortization of purchased intangibles	46,000,000	40,000,000
Restructuring, impairment and other charges	78,000,000	0
Stock compensation charges	33,000,000	36,000,000
Equity in earnings of affiliated companies	(119,000,000)	(195,000,000)
Dividends received from affiliated companies	20,000,000	143,000,000
Deferred tax (benefit) provision	(1,047,000,000)	187,000,000
Restructuring payments	(10,000,000)	(38,000,000)
Employee benefit payments less than expense	0	5,000,000
Losses (gains) on foreign currency hedges related to translated earnings	2,295,000,000	(42,000,000)
Unrealized translation (gains) losses on transactions	(177,000,000)	303,000,000
Contingent consideration fair value adjustment	(40,000,000)
Gain on realignment of equity investment	(2,676,000,000)	0
Changes in certain working capital items:
Trade accounts receivable	(184,000,000)	52,000,000
Inventories	(69,000,000)	(60,000,000)
Other current assets	(42,000,000)	(204,000,000)
Accounts payable and other current liabilities	14,000,000	(294,000,000)
Other, net	6,000,000	(45,000,000)
Net cash provided by operating activities	1,095,000,000	1,845,000,000
Cash Flows from Investing Activities:
Capital expenditures	(815,000,000)	(939,000,000)
Acquisitions of business, net of cash acquired	(279,000,000)	(531,000,000)
Investment in unconsolidated entities	(14,000,000)	(33,000,000)
Cash	4,818,000,000	0
(Payments) proceeds from loan repayments from unconsolidated entities	(10,000,000)	6,000,000
Short-term investments – acquisitions	(20,000,000)	(859,000,000)
Short-term investments – liquidations	121,000,000	1,046,000,000
Realized gains on foreign currency hedges related to translated earnings	146,000,000	489,000,000
Other, net	9,000,000	(1,000,000)
Net cash provided by (used in) investing activities	3,956,000,000	(822,000,000)
Cash Flows from Financing Activities:
Net repayments of short-term borrowings and current portion of long-term debt	(85,000,000)	0
Principal payments under capital lease obligations	(1,000,000)	(1,000,000)
Proceeds from issuance of short-term debt	0	2,000,000
Proceeds from issuance of long-term debt	0	745,000,000
Payments from issuance of commercial paper	(481,000,000)	0
Payments from settlement of interest rate swap arrangements	0	(10,000,000)
Proceeds from the exercise of stock options	(86,000,000)	(99,000,000)
Repurchases of common stock for treasury	(3,884,000,000)	(1,905,000,000)
Dividends paid	(493,000,000)	(519,000,000)
Net cash used in financing activities	(4,858,000,000)	(1,589,000,000)
Effect of exchange rates on cash	128,000,000	(303,000,000)
Net increase (decrease) in cash and cash equivalents	321,000,000	(869,000,000)
Cash and cash equivalents at beginning of period	4,500,000,000	5,309,000,000
Cash and cash equivalents at end of period	$ 4,821,000,000	$ 4,440,000,000

Note 1 - Significant Accounting

Note 1 - Significant Accounting Policies	9 Months Ended
	Sep. 30, 2016
Notes to Financial Statements
Significant Accounting Policies [Text Block]	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, 2015 (“2015 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. 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 May 2014, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update No. (“ASU”) 2014-09, Revenue from Contracts with Customers, as a new Topic, Accounting Standards Codification (“ASC”) Topic 606. The new revenue recognition standard provides a five-step analysis of transactions to determine when and how revenue is recognized. The core principle is that a company should recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. This ASU originally was effective for annual periods beginning after December 15, 2016, including interim periods within that reporting period. This ASU shall be applied retrospectively to each period presented or as a cumulative-effect adjustment as of the date of adoption. In August 2015, the FASB issued ASU 2015-14, Revenue from Contracts with Customers (Topic 606), deferring the effective date of ASU 2014-09 by one year. We can elect to adopt the provisions of ASU 2014-09 for annual periods beginning after December 15, 2017, including interim periods within that reporting period. The FASB also agreed to allow entities to choose to adopt the standard as of the original effective date. We are currently assessing the adoption date and potential impact of adopting ASU 2014-09 on our financial statements and related disclosures. 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 is intended to provide enhanced transparency and comparability by requiring lessees to record right-of-use assets and corresponding lease liabilities on the balance sheet. ASU 2016-02 will continue to classify leases as either finance or operating, with classification affecting the pattern of expense recognition in the statement of income. ASU 2016-02 is effective for fiscal years beginning after December 15, 2018, including interim periods within those fiscal years. Early adoption is permitted. ASU 2016-02 is required to be applied with a modified retrospective approach to each prior reporting period presented with various optional practical expedients. We are currently assessing the adoption date and the potential impact of adopting ASU 2016-02 on our financial statements and related disclosures. In March 2016, the FASB issued ASU 2016-09, Compensation—Stock Compensation (Topic 718): Improvements to Employee Share-Based Payment Accounting. ASU 2016-09 changes how companies account for certain aspects of share-based payment awards to employees, including the accounting for income taxes, forfeitures and statutory tax withholding requirements, as well as classification in the statement of cash flows. ASU 2016-09 is effective for annual periods beginning after December 15, 2016, including interim periods within those annual periods. If an entity early adopts in an interim period, any adjustments should be reflected as of the beginning of the fiscal year that includes that interim period and the entity must adopt all of the amendments from ASU 2016-09 in the same period. We are currently assessing the potential impact of adopting ASU 2016-09 on our financial statements and related disclosures. Corning does not expect adoption of this standard to have a material impact on its consolidated results of operations and financial condition. In August 2016, the FASB issued ASU 2016-15, Statement of Cash Flows (Topic 230): Classification of Certain Cash Receipts and Cash Payments. ASU 2016-15 refines how companies classify 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. ASU 2016-15 is effective for annual periods beginning after December 15, 2017, and for interim periods within fiscal years beginning after December 15, 2018. Early adoption is permitted. We are currently assessing the adoption date and the potential impact of adopting ASU 2016-15 on our financial statements and related disclosures. In October 2016, the FASB issued ASU No. 2016-16, Income Taxes (Topic 740): Intra-Entity Transfers of Assets Other Than Inventory, which reduces the complexity in the accounting standards by allowing the recognition of current and deferred income taxes for an intra-entity asset transfer, other than inventory, when the transfer occurs. Historically, recognition of the income tax consequence was not recognized until the asset was sold to an outside party. This amendment should be applied on a modified retrospective basis through a cumulative-effect adjustment directly to retained earnings as of the beginning of the period of adoption. ASU 2016-16 is effective for annual periods beginning after December 15, 2017, including interim reporting periods within those annual reporting periods. Early adoption is permitted for all entities as of the beginning of an annual reporting period for which financial statements (interim or annual) have not been issued or made available for issuance. We are currently evaluating the impact of ASU 2016-16 on our consolidated financial statements and related disclosures.

Note 2 - Restructuring, Impairm

Note 2 - Restructuring, Impairment and Other Charges	9 Months Ended
	Sep. 30, 2016
Notes to Financial Statements
Restructuring and Related Activities Disclosure [Text Block]	2. Restructuring, Impairment and Other Charges 2016 Activity In the first three quarters of 2016, we recorded charges of $78 million, pre-tax, for employee related costs, asset disposals, and exit costs associated with some minor restructuring activities in all of the segments, with total cash expenditures estimated to be $15 million. The following table summarizes the restructuring, impairment and other charges for the nine months ended September 30, 2016 (in millions): Reserve at January 1, 2016 Net Charges/ Reversals Non-cash adjustments Cash payments Reserve at September 30, 2016 Restructuring: Employee related costs $ 3 $ 15 $ (1) $ (9) $ 8 Other charges 1 (1) Total restructuring activity $ 3 $ 16 $ (1) $ (10) $ 8 Disposal of long-lived assets $ 62 Total restructuring, impairment and other charges $ 78 Cash payments for employee-related and exit activity related to the 2016 restructuring activities are expected to be substantially completed in 2016. The year-to-date cost of these plans for each of our reportable segments was as follows (in millions): Operating segment Employee- related and other charges Display Technologies $ 4 Optical Communications 6 Environmental Technologies 5 Specialty Materials 12 Life Sciences 3 All Other 40 Corporate 8 Total restructuring, impairment and other charges $ 78

Note 3 - Commitments, Contingen

Note 3 - Commitments, Contingencies, and Guarantees	9 Months Ended
	Sep. 30, 2016
Notes to Financial Statements
Commitments and Contingencies Disclosure [Text Block]	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, 2015, the Company’s liability under the Plan was estimated to be $528 million. At September 30, 2016, this estimated liability was $290 million, due to the Company’s contribution, in the second quarter of 2016, of its equity interests in PCC and Pittsburgh Corning Europe N.V. in the total amount of $238 million, as required by the Plan. Corning recognized a gain of $56 million in the second quarter of 2016 in the selling, general and administrative expenses line of the Company’s Consolidated Statements of Income for the difference between the fair value of the asbestos litigation liability and carrying value of the investment. The remaining $290 million liability is for the fixed series of payments required by the Plan. At September 30, 2016, the total amount of the payments due in years 2018 through 2022 is $220 million and is classified as a non-current liability. The remaining $70 million payment due in the second quarter of 2017 is classified as a current liability as it is expected to be made within the next twelve months. Additionally, Corning is a defendant in other 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 liabilities at this time. A summary of changes of the estimated asbestos litigation liability is as follows (in millions): Amended PCC Plan Non-PCC Total Asbestos Litigation Liability Equity Interests Fixed Series of Payments Fair Value of Asbestos Litigation Liability as of Dec. 31, 2015 $ 238 $ 290 $ 150 $ 678 Less: Contribution of PCC & PCE Equity Interests - Carrying Value 182 - - 182 Gain on Contribution of Equity Interests 56 - - 56 Asbestos Litigation Liability as of September 30, 2016 $ - $ 290 $ 150 $ 440 Non-PCC Asbestos Claims Insurance Litigation 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, including rights that may be affected by the potential resolutions described above. 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. Other Commitments and Contingencies We are required, at the time a guarantee is issued, to recognize a liability for the fair value or market value of the obligation it assumes. In the normal course of our business, we do not routinely provide significant third-party guarantees. Generally, any third party guarantees provided by Corning are limited to certain financial guarantees including stand-by letters of credit and performance bonds, and the incurrence of contingent liabilities in the form of purchase price adjustments related to attainment of milestones. When provided, these guarantees have various terms, and none of these guarantees are individually significant. As of September 30, 2016 and December 31, 2015, contingent guarantees totaled a notional value of $201 million and $184 million, respectively. We believe a significant majority of these contingent guarantees will expire without being funded. We also were contingently liable for purchase obligations of $255 million and $220 million, at September 30, 2016 and December 31, 2015, respectively. Product warranty liability accruals were considered insignificant at September 30, 2016 and December 31, 2015. Corning is a defendant in various lawsuits, including environmental, 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 17 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, 2016 and December 31, 2015, Corning had accrued approximately $45 million (undiscounted) and $37 million (undiscounted), respectively, 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, 2016, 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.

Note 4 - Debt

Note 4 - Debt	9 Months Ended
	Sep. 30, 2016
Notes to Financial Statements
Debt Disclosure [Text Block]	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 $4.3 billion at September 30, 2016 and $4.1 billion at December 31, 2015, compared to recorded book values of $3.9 billion at September 30, 2016 and December 31, 2015. 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. On July 20, 2016, Corning’s Board of Directors approved a $1 billion increase to our commercial paper program, raising it to $2 billion. If needed, this program is supported by our $2 billion revolving credit facility that expires in 2019. Corning did not have outstanding commercial paper at September 30, 2016. Debt Issuances 2015 In the second quarter of 2015, we issued $375 million of 1.50% senior unsecured notes that mature on May 8, 2018 and $375 million of 2.90% senior unsecured notes that mature on May 15, 2022. We can redeem these debentures at any time, subject to certain stipulations.

Note 5 - Income Taxes

Note 5 - Income Taxes	9 Months Ended
	Sep. 30, 2016
Notes to Financial Statements
Income Tax Disclosure [Text Block]	5. Income Taxes Our benefit (provision) for income taxes and the related effective income tax rates were as follows (in millions): Three months ended September 30, Nine months ended September 30, 2016 2015 2016 2015 Benefit (provision) for income taxes $ 27 $ (6) $ 835 $ (202) Effective tax rate (10.5%) 2.8% (64.8%) 15.3% For the three months ended September 30, 2016, the effective income tax rate differed from the U.S. statutory rate of 35% primarily due to the following benefits: · Rate differences on income (loss) of consolidated foreign companies, including the benefit of excess foreign tax credits resulting from the inclusion of foreign earnings in U.S. income. For the nine months ended September 30, 2016, the effective income tax rate differed from the U.S. statutory rate of 35% primarily due to the following benefits: · Rate differences on income (loss) of consolidated foreign companies, including the benefit of excess foreign tax credits resulting from the inclusion of foreign earnings in U.S. income; · The impact of equity in earnings of nonconsolidated affiliates reported in the financials, net of tax; and · The tax-free nature of the realignment of our equity interest in Dow Corning during the period, as well as the release of the deferred tax liability related to Corning’s tax on Dow Corning’s undistributed earnings as of the date of the transaction. For the three and nine months ended September 30, 2015, the effective income tax rate differed from the U.S. statutory rate of 35% primarily due to the following benefits: · Rate differences on income (loss) of consolidated foreign companies, including the benefit of excess foreign tax credits resulting from the inclusion of high-taxed foreign earnings in U.S. income; and · The impact of equity in earnings of nonconsolidated affiliates reported in the financials, net of tax. Corning continues 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. Significant one time or unusual items that may impact our ability or intent to keep our foreign earnings and cash indefinitely reinvested include significant U.S. acquisitions, stock repurchases, shareholder dividends, changes in tax laws, derivative contract settlements or the development of tax planning ideas that allow us to repatriate earnings at minimal or no tax cost, and/or a change in our circumstances or economic conditions that negatively impact our ability to borrow or otherwise fund U.S. needs from existing U.S. sources. While it remains impracticable to calculate the tax cost of repatriating our total unremitted foreign earnings, such cost could be material to the results of operations of Corning in a particular period. While we expect the amount of unrecognized tax benefits to change in the next 12 months, we do not expect the change to have a significant impact on the results of operations or our financial position.

Note 6 - Earnings Per Common Sh

Note 6 - Earnings Per Common Share	9 Months Ended
	Sep. 30, 2016
Notes to Financial Statements
Earnings Per Share [Text Block]	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 September 30, Nine months ended September 30, 2016 2015 2016 2015 Net income attributable to Corning Incorporated $ 284 $ 212 $ 2,123 $ 1,115 Less: Series A convertible preferred stock dividend 24 24 73 73 Net income available to common stockholders – basic 260 188 2,050 1,042 Plus: Series A convertible preferred stock dividend (1) 24 73 73 Net income available to common stockholders – diluted $ 284 $ 188 $ 2,123 $ 1,115 Weighted-average common shares outstanding – basic 978 1,210 1,046 1,241 Effect of dilutive securities: Stock options and other dilutive securities 9 8 9 10 Series A convertible preferred stock (1) 115 115 115 Weighted-average common shares outstanding – diluted 1,102 1,218 1,170 1,366 Basic earnings per common share $ 0.27 $ 0.16 $ 1.96 $ 0.84 Diluted earnings per common share $ 0.26 $ 0.15 $ 1.81 $ 0.82 Antidilutive potential shares excluded from diluted earnings per common share: Series A convertible preferred stock (1) 115 Employee stock options and awards 13 29 18 22 Accelerated share repurchase forward contract 14 14 Total 27 144 32 22 (1) In the three months ended September 30, 2015, the Series A convertible preferred stock was anti-dilutive and therefore excluded from the calculation of diluted earnings per share.

Note 7 - Available-for-Sale Inv

Note 7 - Available-for-Sale Investments	9 Months Ended
	Sep. 30, 2016
Notes to Financial Statements
Investments in Debt and Marketable Equity Securities (and Certain Trading Assets) Disclosure [Text Block]	7. Available-for-Sale Investments At September 30, 2016 and December 31, 2015, the Company held $0 million and $100 million of short-term investments (U.S. government and agency securities), respectively. At September 30, 2016 and December 31, 2015, the Company held long-term investments of $30 million and $33 million in asset-backed securities, respectively. The Company’s investments in available-for-sale securities are held at fair value with amortized cost of $33 million and $37 million at September 30, 2016 and December 31, 2015, respectively. We have no plans to sell, nor do we believe it is more likely than not that we would be required to sell, the long-term investment asset-backed securities (which are collateralized by mortgages) before recovery of their amortized cost basis. It is possible that a significant degradation in the delinquency or foreclosure rates in the underlying assets could cause further temporary or other-than-temporary impairments in the future. For the nine months ended September 30, 2016 and 2015, proceeds from sales and maturities of short-term investments totaled approximately $121 million and $1.0 billion, respectively.

Note 8 - Inventories, Net of In

Note 8 - Inventories, Net of Inventory Reserves	9 Months Ended
	Sep. 30, 2016
Notes to Financial Statements
Inventory Disclosure [Text Block]	8. Inventories, Net of Inventory Reserves Inventories, net of inventory reserves comprise the following (in millions): September 30, 2016 December 31, 2015 Finished goods $ 636 $ 633 Work in process 301 264 Raw materials and accessories 278 200 Supplies and packing materials 301 288 Total inventories, net of inventory reserves $ 1,516 $ 1,385

Note 9 - Investments

Note 9 - Investments	9 Months Ended
	Sep. 30, 2016
Notes to Financial Statements
Equity Method Investments and Joint Ventures Disclosure [Text Block]	9. Investments On May 31, 2016, Corning completed the strategic realignment of its equity investment in Dow Corning Corporation (“Dow Corning”) pursuant to the Transaction Agreement announced in December 2015. Under the terms of the Transaction Agreement, Corning exchanged with Dow Corning its 50% stock interest in Dow Corning for 100% of the stock of a newly formed entity, which holds an equity interest in Hemlock Semiconductor Group (“HSG”) and approximately $4.8 billion in cash. Prior to realignment, HSG, a wholly owned and consolidated subsidiary of Dow Corning, was an indirect equity investment of Corning. Upon completion of the exchange, Corning now has a direct equity investment in HSG. Because our ownership percentage in HSG did not change as a result of the realignment, the investment in HSG is recorded at its carrying value, which had a negative carrying value of $383 million at the transaction date. The negative carrying value resulted from a one-time charge to this entity in 2014 for the permanent abandonment of certain assets. Excluding this charge, the entity is profitable and is expected to recover its equity in the near term. Corning’s financial statements as of September 30, 2016 include the positive impact of the release of a deferred tax liability of $105 million related to Corning’s tax on Dow Corning’s earnings that were not distributed as of the date of the transaction and a non-taxable gain of $2,676 million on the realignment. Details of the gain are illustrated below (in millions): Cash $ 4,818 Carrying Value of Dow Corning Equity Investment (1,560) Carrying Value of HSG Equity Investment (383) Other (1) (199) Gain $ 2,676 (1) Primarily consists of the release of accumulated other comprehensive income items related to unamortized actuarial losses related to Dow Corning’s pension plan and foreign currency translation gains in the amounts of $260 million and $45 million, respectively. Investments comprise the following (in millions): Ownership interest September 30, 2016 December 31, 2015 Affiliated companies accounted for by the equity method Dow Corning (1) 50% $ 1,483 All other (1) 20% to 50% $ 285 422 285 1,905 Other investments 67 70 Subtotal Investment Assets $ 352 $ 1,975 Affiliated companies accounted for by the equity method HSG (2)(3) 50% $ 343 Subtotal Investment Liabilities $ 343 (1) Amounts reflect Corning’s direct ownership interests in the respective affiliated companies at September 30, 2016 and December 31, 2015. Corning does not control any of such entities. (2) HSG indirectly holds an 80.5% interest in a HSG operating partnership. (3) The negative carrying value of the investment in HSG is recorded in Other Liabilities.

Note 10 - Goodwill and Other In

Note 10 - Goodwill and Other Intangible Assets	9 Months Ended
	Sep. 30, 2016
Notes to Financial Statements
Goodwill and Intangible Assets Disclosure [Text Block]	10. Goodwill and Other Intangible Assets The carrying amount of goodwill by segment for the periods ended September 30, 2016 and December 31, 2015 is as follows (in millions): Optical Communications Display Technologies Specialty Materials Life Sciences All Other Total Balance at December 31, 2015 $ 439 $ 128 $ 150 $ 562 $ 101 $ 1,380 Acquired goodwill (1) 175 175 Measurement period adjustment (2) (6) (6) Foreign currency translation adjustment 7 5 6 2 20 Balance at September 30, 2016 $ 615 $ 133 $ 150 $ 568 $ 103 $ 1,569 (1) The Company completed an acquisition in the Optical Communications segment during the second quarter of 2016 with a purchase price of $296 million. (2) In the third quarter of 2016, minor adjustments were made to the preliminary allocation of the total purchase consideration related to a second quarter acquisition. The allocation is expected to be finalized in the fourth quarter of 2016, and any adjustments are not expected to be material. Corning’s gross goodwill balances for the periods ended September 30, 2016 and December 31, 2015 were $8.1 billion and $7.9 billion, respectively. Accumulated impairment losses were $6.5 billion for the periods ended September 30, 2016 and December 31, 2015, and were generated primarily through goodwill impairments related to the Optical Communications segment. Other intangible assets are as follows (in millions): September 30, 2016 December 31, 2015 Gross Accumulated amortization Net Gross Accumulated amortization Net Amortized intangible assets: Patents, trademarks, and trade names $ 367 $ 176 $ 191 $ 350 $ 162 $ 188 Customer lists and other 744 138 606 621 103 518 Total $ 1,111 $ 314 $ 797 $ 971 $ 265 $ 706 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 2016, primarily due to acquisitions of $127 million of other intangible assets and foreign currency translation adjustments of $11 million, offset by amortization of $46 million. Amortization expense related to these intangible assets is estimated to be $67 million for 2016, $72 million annually from 2017 to 2018, $71 million for 2019, and $66 million annually from 2020 to 2021.

Note 11 - Employee Retirement P

Note 11 - Employee Retirement Plans	9 Months Ended
	Sep. 30, 2016
Notes to Financial Statements
Pension and Other Postretirement Benefits Disclosure [Text Block]	11. 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 September 30, Nine months ended September 30, Three months ended September 30, Nine months ended September 30, 2016 2015 2016 2015 2016 2015 2016 2015 Service cost $ 22 $ 22 $ 65 $ 67 $ 3 $ 3 $ 7 $ 10 Interest cost 31 36 93 109 6 8 19 24 Expected return on plan assets (41) (44) (124) (133) Amortization of net loss 1 (1) 3 Amortization of prior service cost (credit) 1 2 4 5 (1) (2) (3) (5) Recognition of actuarial loss 26 60 8 Total pension and postretirement benefit expense $ 39 $ 16 $ 98 $ 56 $ 8 $ 10 $ 22 $ 32 The recognition of actuarial loss in the three months ended September 30, 2016 resulted from small settlements in several of our benefit plans which triggered plan remeasurements. In addition to the settlements occurring in the third quarter of 2016, results in the nine months ended September 30, 2016 also included the impact of the finalization of our 2015 benefit plan valuations.

Note 12 - Other Liabilities

Note 12 - Other Liabilities	9 Months Ended
	Sep. 30, 2016
Notes to Financial Statements
Other Liabilities Disclosure [Text Block]	12. Other Liabilities Other liabilities follow (in millions): September 30, 2016 December 31, 2015 Current liabilities: Wages and employee benefits $ 472 $ 491 Income taxes 149 53 Asbestos and other litigation reserves 73 238 Derivative instruments 204 55 Other current liabilities 456 471 Other accrued liabilities $ 1,354 $ 1,308 Non-current liabilities: Asbestos and other litigation reserves $ 394 $ 440 Derivative instruments 1,543 88 Investment in Hemlock Semiconductor Group (1) 343 Defined benefit pension plan liabilities 762 672 Other non-current liabilities 1,062 1,042 Other liabilities $ 4,104 $ 2,242 (1) The negative carrying value resulted from a one-time charge to this entity in 2014 for the permanent abandonment of certain assets. Asbestos Litigation Corning and PPG each owned 50% of the capital stock of PCC. Over a period of more than two decades, PCC and several other defendants were named in numerous lawsuits involving claims alleging personal injury from exposure to asbestos. Refer to Note 3 (Commitments, Contingencies and Guarantees) to the consolidated financial statements for additional information on the asbestos litigation.

Note 13 - Hedging Activities

Note 13 - Hedging Activities	9 Months Ended
	Sep. 30, 2016
Notes to Financial Statements
Derivative Instruments and Hedging Activities Disclosure [Text Block]	13. Hedging Activities Undesignated Hedges The table below includes a total gross notional value for translated earnings contracts of $17.6 billion and $12.0 billion at September 30, 2016 and December 31, 2015, respectively. The translated earnings contracts include purchased and zero-cost collars of $2.8 billion and $5.6 billion and average rate forwards of $14.8 billion and $6.4 billion at September 30, 2016 and December 31, 2015, respectively. With respect to the purchased and zero-cost collars, the gross notional amount includes the value of both the put and call options. However, due to the nature of the purchased and zero-cost collars, either the put or the call option can be exercised at maturity. The total net notional value of the purchased and zero-cost collars was $1.4 billion and $2.9 billion at September 30, 2016 and December 31, 2015, respectively. The following tables summarize the notional amounts and respective fair values of Corning’s derivative financial instruments on a gross basis for September 30, 2016 and December 31, 2015 (in millions): U.S. Dollar Asset derivatives Liability derivatives Gross notional amount Balance sheet location Fair value Balance sheet location Fair value Sept. 30, 2016 Dec. 31, 2015 Sept. 30, 2016 Dec. 31, 2015 Sept. 30, 2016 Dec. 31, 2015 Derivatives designated as hedging instruments Foreign exchange contracts (1) $ 527 $ 782 Other current assets $ 1 $ 5 Other accrued liabilities $ (54) $ (10) Other assets 1 Other liabilities (12) (23) Interest rate contracts 550 550 Other assets 7 Other liabilities (4) Derivatives not designated as hedging instruments Foreign exchange contracts, other 759 1,095 Other current assets 2 6 Other accrued liabilities (36) (12) Translated earnings contracts 17,595 11,972 Other current assets 66 511 Other accrued liabilities (114) (33) Other assets 27 472 Other liabilities (1,531) (61) Total derivatives $19,431 $14,399 $103 $995 $(1,747) $(143) (1) Cash flow hedges with a typical duration of 24 months or less. The following tables summarize the effect of derivative financial instruments on Corning’s consolidated financial statements for the three months ended September 30, 2016 and 2015 (in millions): Effect of designated derivative instruments on the consolidated financial statements for the three months ended September 30 Derivatives in hedging relationships Gain/(loss) recognized in other comprehensive income (OCI) Location of gain/(loss) reclassified from accumulated OCI into income (effective) Gain/(loss) reclassified from accumulated OCI into income (effective) (1) 2016 2015 2016 2015 Interest rate hedges Sales $ 1 $ 4 Cost of sales (13) 1 Foreign exchange contracts $ 26 $ (58) Total cash flow hedges $ 26 $ (58) $ (12) $ 5 (1) The amount of hedge ineffectiveness at September 30, 2016 and 2015 was insignificant. The following tables summarize the effect of derivative financial instruments on Corning’s consolidated financial statements for the nine months ended September 30, 2016 and 2015 (in millions): Effect of derivative instruments on the consolidated financial statements for the nine months ended September 30 Derivatives in hedging relationships Gain/(loss) recognized in other comprehensive income (OCI) Location of gain/(loss) reclassified from accumulated OCI into income (effective) Gain/(loss) reclassified from accumulated OCI into income (effective) (1) 2016 2015 2016 2015 Interest rate hedges $ (7) Sales $ 2 $ 14 Cost of sales (27) 7 Foreign exchange contracts $ (37) (24) Total cash flow hedges $ (37) $ (31) $ (25) $ 21 (1) The amount of hedge ineffectiveness at September 30, 2016 and 2015 was insignificant. The following table summarizes the effect on the consolidated financial statements relating to Corning’s derivative financial instruments (in millions): Undesignated derivatives Location of gain/(loss) recognized in income Gain (loss) recognized in income Three months ended September 30, Nine months ended September 30, 2016 2015 2016 2015 Foreign exchange contracts – balance sheet Foreign currency hedge gain (loss), net $ 1 $ (6) $ (27) $ 7 Foreign exchange contracts – loans Foreign currency hedge gain (loss), net (4) 1 (48) 3 Foreign currency hedges related to translated earnings Foreign currency hedge gain (loss), net (237) (149) (2,295) 42 Total undesignated $ (240) $ (154) $ (2,370) $ 52

Note 14 - Fair Value Measuremen

Note 14 - Fair Value Measurements	9 Months Ended
	Sep. 30, 2016
Notes to Financial Statements
Fair Value Disclosures [Text Block]	14. 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 September 30, 2016 Quoted prices in active markets for identical assets (Level 1) Significant other observable inputs (Level 2) Significant unobservable inputs (Level 3) Current assets: Other current assets (1) $ 68 $ 68 Non-current assets: Other assets (1)(2) $ 350 $ 64 $ 286 Current liabilities: Other accrued liabilities (1) $ 204 $ 204 Non-current liabilities: Other liabilities (1) $ 1,543 $ 1,543 (1) Derivative assets and liabilities include foreign exchange forward and zero-cost collar contracts, and interest rate swaps which are measured using observable quoted prices for similar assets and liabilities. (2) Other assets include asset-backed securities which are measured using observable quoted prices for similar assets and contingent consideration assets or liabilities which are measured by applying an option pricing model using projected future revenue and forecasted foreign exchange rates. Fair value measurements at reporting date using December 31, 2015 Quoted prices in active markets for identical assets (Level 1) Significant other observable inputs (Level 2) Significant unobservable inputs (Level 3) Current assets: Short-term investments $ 100 $ 100 Other current assets (1) $ 522 $ 522 Non-current assets: Other assets (1)(2) $ 752 $ 506 $ 246 Current liabilities: Other accrued liabilities (1) $ 55 $ 55 Non-current liabilities: Other liabilities (1) $ 98 $ 88 $ 10 (1) Derivative assets and liabilities include foreign exchange contracts which are measured using observable quoted prices for similar assets and liabilities. (2) Other assets include asset-backed securities which are measured using observable quoted prices for similar assets and contingent consideration assets or liabilities which are measured by applying an option pricing model using projected future revenues. As a result of the acquisition of Samsung Corning Precision Materials in January 2014, the Company has contingent consideration that was measured using unobservable (Level 3) inputs. Changes in the fair value of the contingent consideration in future periods are valued using an option pricing model and are recorded in Corning’s results in the period of the change. As of September 30, 2016 and December 31, 2015, the fair value of the potential receipt of the contingent consideration in 2018 was $286 million and $246 million, respectively. There were no significant financial assets and liabilities measured on a nonrecurring basis during the nine months ended September 30, 2016.

Note 15 - Shareholders' Equity

Note 15 - Shareholders' Equity	9 Months Ended
	Sep. 30, 2016
Notes to Financial Statements
Stockholders' Equity Note Disclosure [Text Block]	15. Shareholders’ Equity Fixed Rate Cumulative Convertible Preferred Stock, Series A On January 15, 2014, Corning designated a new series of its preferred stock as Fixed Rate Cumulative Convertible Preferred Stock, Series A, par value $100 per share, and issued 2,300 shares of Preferred Stock at an issue price of $1 million per share, for an aggregate issue price of $2.3 billion. 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, 2016, the Preferred Stock has not been converted, and none of the anti-dilution provisions have been triggered. Share Repurchases On July 28, 2016, Corning entered into an accelerated share repurchase transaction (“ASR”) with Morgan Stanley & Co. LLC (“Morgan Stanley”) to repurchase $2 billion of Corning’s common stock in two tranches of $1.5 billion and $500 million, respectively, each with its own scheduled termination date. The ASR was executed under the $4 billion share repurchase program authorized on October 26, 2015 (the “2015 Repurchase Program”). Under the ASR, Corning made a $2 billion aggregate payment to Morgan Stanley on July 28, 2016 and received an initial aggregate delivery of 74.4 million shares of Corning common stock from Morgan Stanley on the same day. Each tranche is subject to acceleration at Morgan Stanley’s option during an acceleration period prior to its scheduled termination date. The total number of shares Corning will repurchase under each tranche of the ASR will be based generally upon the average daily volume weighted average price of Corning’s common stock during the repurchase period for such tranche, less a discount and subject to adjustments pursuant to the terms and conditions of the ASR. Depending on the circumstances at settlement of each tranche, Morgan Stanley may be required to deliver additional shares of common stock to Corning or Corning may be required either to deliver shares of common stock or to make a cash payment to Morgan Stanley. Final settlement of both tranches of the ASR is scheduled to occur in the fourth quarter of 2016. In addition to the ASR, during the three and nine months ended September 30, 2016, the Company repurchased 15.3 million and 96 million shares of common stock on the open market for approximately $340 million and $1,901 million, respectively, as part of its 2015 Repurchase Program. Accumulated Other Comprehensive Income In the three and nine months ended September 30, 2016 and 2015, the primary changes in accumulated other comprehensive income (“AOCI”) were related to the foreign currency translation adjustment component and the unamortized actuarial losses component. A summary of changes in the foreign currency translation adjustment component of AOCI is as follows (in millions): Three months ended September 30, Nine months ended September 30, 2016 2015 2016 2015 Beginning balance $ (547) $ (877) $ (1,171) $ (581) Other comprehensive income (loss) 235 (163) 860 (399) Equity method affiliates 10 (18) 9 (78) Net current-period other comprehensive income (loss) 245 (181) 869 (477) Ending balance $ (302) $ (1,058) $ (302) $ (1,058) In the second quarter of 2016, $45 million cumulative foreign currency translation gain was released as a result of the realignment of Dow Corning and included in the gain on realignment of equity investment. In the second quarter of 2016, a $22 million cumulative foreign currency translation loss was released as a result of the contribution of our investment in PCE to the PCC litigation trust and included in selling, general and administrative expenses. There were no material tax effects related to foreign currency translation gains and losses for the three months ended September 30, 2016 and 2015, and for the nine months ended September 30, 2015. In the nine months ended September 30, 2016, Corning recorded a tax impact of $45 million related to foreign currency translation gains and losses. A summary of changes in the unamortized actuarial gains (losses) component of AOCI is as follows (in millions) (1): Three months ended September 30, Nine months ended September 30, 2016 2015 2016 2015 Beginning balance $ (323) $ (703) $ (588) $ (709) Other comprehensive (loss) income before reclassifications (2) (31) (1) (64) 5 Amounts reclassified from accumulated other comprehensive income (2) 26 1 60 11 Equity method affiliates (3) 6 264 (4) Net current-period other comprehensive income (5) 6 260 12 Ending balance $ (328) $ (697) $ (328) $ (697) (1) All amounts are after tax. Amounts in parentheses indicate debits to accumulated other comprehensive income. (2) Tax effects are not significant. (3) For the three months ended September 30, 2016, tax effects are not significant. For the nine months ended September 30, 2016, amounts are net of total tax expense of $19 million. For the three and nine months ended September 30, 2015, tax effects are not significant. In the second quarter of 2016, a $260 million cumulative unamortized actuarial loss, net of tax of $19 million, was released as a result of the realignment of Dow Corning and included in the gain on realignment of equity investment. In the second quarter of 2016, a $2 million cumulative unamortized actuarial loss was released as a result of the contribution of our investment in PCE to the PCC litigation trust and included in selling, general and administrative expenses.

Note 16 - Share-based Compensat

Note 16 - Share-based Compensation	9 Months Ended
	Sep. 30, 2016
Notes to Financial Statements
Disclosure of Compensation Related Costs, Share-based Payments [Text Block]	16. Share-based Compensation Stock Compensation Plans The Company measures and recognizes compensation cost for all share-based payment awards made to employees and directors based on estimated fair values. Fair values for stock options were estimated using a multiple-point Black-Scholes valuation model. Share-based compensation cost was approximately $10 million and $11 million for the three months ended September 30, 2016 and 2015, respectively, and approximately $33 million and $36 million for the nine months ended September 30, 2016 and 2015, respectively. Amounts for all periods presented included compensation expense for employee stock options and time-based restricted stock and restricted stock units. Stock Options Corning’s stock option plans provide non-qualified and incentive stock options to purchase authorized but unissued shares, or treasury shares, at the market price on the grant date and generally become exercisable in installments from one to five years from the grant date. The maximum term of non-qualified and incentive stock options is 10 years from the grant date. The following table summarizes information concerning stock options outstanding including the related transactions under the stock option plans for the nine months ended September 30, 2016: Number of Shares (in thousands) Weighted- Average Exercise Price Weighted- Average Remaining Contractual Term in Years Aggregate Intrinsic Value (in thousands) Options Outstanding as of December 31, 2015 42,738 $19.40 Granted 1,669 19.98 Exercised (5,838) 15.63 Forfeited and Expired (4,317) 26.02 Options Outstanding as of September 30, 2016 34,252 19.24 3.96 $164,226 Options Expected to Vest as of September 30, 2016 34,208 19.23 3.95 164,091 Options Exercisable as of September 30, 2016 29,475 18.99 3.21 150,477 The aggregate intrinsic value (market value of stock less option exercise price) in the preceding table represents the total pretax intrinsic value, based on the Company’s closing stock price on September 30, 2016, which would have been received by the option holders had all option holders exercised their “in-the-money” options as of that date. As of September 30, 2016, there was approximately $7 million of unrecognized compensation cost related to stock options granted under the plans. The cost is expected to be recognized over a weighted-average period of 1.8 years. Compensation cost related to stock options was approximately $2 million for the three months ended September 30, 2016 and 2015, respectively, and approximately $10 million and $13 million for the nine months ended September 30, 2016 and 2015, respectively. Proceeds received from the exercise of stock options were $86 million and $99 million for the nine months ended September 30, 2016 and 2015, respectively. Proceeds received from the exercise of stock options were included in financing activities on the Company’s Consolidated Statements of Cash Flows. The total intrinsic value of options exercised for the nine months ended September 30, 2016 and 2015 was approximately $36 million and $46 million, respectively. The income tax benefit realized from share-based compensation was not significant for the three and nine months ended September 30, 2016 and 2015, respectively. Refer to Note 5 (Income Taxes) to the Consolidated Financial Statements. The following inputs were used for the valuation of option grants under our stock option plans: Three months ended September 30, Nine months ended September 30, 2016 2015 2016 2015 Expected volatility 38.6% 44.2% 38.6 - 43.1% 44.2 - 44.9% Weighted-average volatility 38.6% 44.2% 38.6 - 43.1% 44.2 - 44.9% Expected dividends 2.34% 2.67% 2.34 - 2.94% 1.92 - 2.67% Risk-free rate 1.4% 2.0% 1.4 - 1.6% 1.9 - 2.0% Average risk-free rate 1.4% 2.0% 1.4 - 1.6% 1.9 - 2.0% Expected term (in years) 7.4 7.2 7.4 - 7.4 7.2 - 7.2 Pre-vesting departure rate 0.6% 0.6% 0.6 - 0.6% 0.6 - 0.6% Expected volatility is based on a blended approach defined as the weighted average of the short-term implied volatility, the most recent volatility for the period equal to the expected term, and the most recent 15-year historical volatility. The expected term assumption is the period of time the options are expected to be outstanding, and is calculated using a combination of historical exercise experience adjusted to reflect the current vesting period of options being valued, and partial life cycles of outstanding options. The risk-free rate assumption is the implied rate for a zero-coupon U.S. Treasury bond with a term equal to the option’s expected term. Incentive Stock Plans The Corning Incentive Stock Plan permits restricted stock and restricted stock unit grants, either determined by specific performance goals or issued directly, in most instances, subject to the possibility of forfeiture and without cash consideration. Restricted stock and restricted stock units under the Incentive Stock Plan are granted at the closing market price on the grant date, contingently vest over a period of generally one to ten years, and generally have contractual lives of one to ten years. The fair value of each restricted stock grant or restricted stock unit awarded under the Incentive Stock Plan is based on the grant date closing price of the Company’s stock. Time-Based Restricted Stock and Restricted Stock Units: Time-based restricted stock and restricted stock units are issued by the Company on a discretionary basis, and are payable in shares of the Company’s common stock upon vesting. The fair value is based on the closing market price of the Company’s stock on the grant date. Compensation cost is recognized over the requisite vesting period and adjusted for actual forfeitures before vesting. The following table represents a summary of the status of the Company’s non-vested time-based restricted stock and restricted stock units as of December 31, 2015, and changes which occurred during the nine months ended September 30, 2016: Shares (000’s) Weighted Average Grant-Date Fair Value Non-vested shares and share units at December 31, 2015 5,242 $ 17.91 Granted 1,415 20.57 Vested (1,802) 14.48 Forfeited (75) 20.78 Non-vested shares and share units at September 30, 2016 4,780 $ 19.95 As of September 30, 2016, there was approximately $31 million of unrecognized compensation cost related to non-vested time-based restricted stock and restricted stock units compensation arrangements granted under the Plan. The cost is expected to be recognized over a weighted-average period of 1.9 years. Compensation cost related to time-based restricted stock and restricted stock units was approximately $8 million and $9 million for the three months ended September 30, 2016 and 2015, respectively, and approximately $23 million for the nine months ended September 30, 2016 and 2015, respectively.

Note 17 - Reportable Segments

Note 17 - Reportable Segments	9 Months Ended
	Sep. 30, 2016
Notes to Financial Statements
Segment Reporting Disclosure [Text Block]	17. Reportable Segments Our reportable segments are as follows: · Display Technologies – manufactures glass substrates primarily for flat panel liquid crystal displays. · Optical Communications – manufactures carrier and enterprise network components for the telecommunications industry. · Environmental Technologies – manufactures ceramic substrates and filters for automotive and diesel emission control applications. · 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. · 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 Corning’s Pharmaceutical Technologies business, which consists of a pharmaceutical glass business and a glass tubing business used in the pharmaceutical packaging industry. This segment also includes Corning Precision Materials’ non-LCD business and new product lines and development projects, as well as certain corporate investments such as Eurokera and Keraglass equity affiliates. 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 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. The accounting policies of our reportable segments are the same as those applied in the consolidated financial statements. Reportable Segments Display Technologies Optical Communications Environmental Technologies Specialty Materials Life Sciences All Other Total Three months ended September 30, 2016 Net sales $ 902 $ 795 $ 264 $ 295 $ 214 $ 37 $ 2,507 Depreciation (1) $ 152 $ 41 $ 32 $ 26 $ 14 $ 12 $ 277 Amortization of purchased intangibles $ 10 $ 5 $ 2 $ 17 Research, development and engineering expenses (2) $ 14 $ 37 $ 24 $ 31 $ 6 $ 47 $ 159 Equity in earnings of affiliated companies $ (3) $ (3) Income tax (provision) benefit $ (98) $ (49) $ (17) $ (21) $ (8) $ 21 $ (172) Net income (loss) (3) $ 279 $ 78 $ 35 $ 42 $ 16 $ (47) $ 403 Display Technologies Optical Communications Environmental Technologies Specialty Materials Life Sciences All Other Total Three months ended September 30, 2015 Net sales $ 757 $ 747 $ 257 $ 288 $ 211 $ 12 $ 2,272 Depreciation (1) $ 147 $ 41 $ 32 $ 29 $ 15 $ 9 $ 273 Amortization of purchased intangibles $ 7 $ 5 $ 12 Research, development and engineering expenses (2) $ 28 $ 33 $ 21 $ 27 $ 6 $ 34 $ 149 Equity in earnings of affiliated companies $ (3) $ 4 $ 1 Income tax (provision) benefit $ (119) $ (34) $ (19) $ (23) $ (9) $ 19 $ (185) Net income (loss) (3) $ 255 $ 70 $ 38 $ 46 $ 18 $ (38) $ 389 Display Technologies Optical Communications Environmental Technologies Specialty Materials Life Sciences All Other Total Nine months ended September 30, 2016 Net sales $ 2,408 $ 2,186 $ 787 $ 788 $ 633 $ 112 $ 6,914 Depreciation (1) $ 452 $ 125 $ 97 $ 81 $ 42 $ 34 $ 831 Amortization of purchased intangibles $ 25 $ 15 $ 6 $ 46 Research, development and engineering expenses (2) $ 49 $ 110 $ 75 $ 96 $ 18 $ 139 $ 487 Restructuring, impairment and other charges $ 4 $ 6 $ 5 $ 12 $ 3 $ 40 $ 70 Equity in earnings of affiliated companies $ (8) $ (8) Income tax (provision) benefit $ (277) $ (99) $ (52) $ (52) $ (22) $ 87 $ (415) Net income (loss) (3) $ 692 $ 172 $ 106 $ 106 $ 45 $ (187) $ 934 Display Technologies Optical Communications Environmental Technologies Specialty Materials Life Sciences All Other Total Nine months ended September 30, 2015 Net sales $ 2,354 $ 2,244 $ 799 $ 832 $ 619 $ 32 $ 6,880 Depreciation (1) $ 455 $ 122 $ 93 $ 82 $ 45 $ 29 $ 826 Amortization of purchased intangibles $ 24 $ 15 $ 39 Research, development and engineering expenses (2) $ 78 $ 101 $ 67 $ 87 $ 17 $ 123 $ 473 Equity in earnings of affiliated companies $ (8) $ 12 $ 4 Income tax (provision) benefit $ (387) $ (100) $ (64) $ (66) $ (26) $ 63 $ (580) Net income (loss) (3) $ 852 $ 204 $ 132 $ 128 $ 52 $ (131) $ 1,237 (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 net segment net income to consolidated net income below. A reconciliation of reportable segment net income to consolidated net income follows (in millions): Three months ended September 30, Nine months ended September 30, 2016 2015 2016 2015 Net income of reportable segments $ 450 $ 427 $ 1,121 $ 1,368 Net loss of All Other (47) (38) (187) (131) Unallocated amounts: Net financing costs (1) (26) (31) (84) (80) Stock-based compensation expense (10) (11) (33) (36) Exploratory research (27) (32) (82) (86) Corporate contributions (15) (13) (38) (37) Gain on realignment of equity investment 2,676 Equity in earnings of affiliated companies, net of impairments (2) 22 38 126 191 Unrealized loss on foreign currency hedges related to translated earnings (239) (317) (2,441) (447) Resolution of Department of Justice investigation (98) Income tax benefit 199 178 1,253 375 Other corporate items (23) 11 (90) (2) Net income $ 284 $ 212 $ 2,123 $ 1,115 (1) Net financing costs include interest income, interest expense, and interest costs and investment gains and losses associated with benefit plans. (2) Through May 31, 2016, the date of the strategic realignment of our equity interest in Dow Corning, this amount primarily represents the equity earnings of Dow Corning.

Significant Accounting Policies

Significant Accounting Policies (Policies)	9 Months Ended
	Sep. 30, 2016
Accounting Policies [Abstract]
Consolidation, Policy [Policy Text Block]	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, 2015 (“2015 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. 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 Pronouncements, Policy [Policy Text Block]	New Accounting Standards In May 2014, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update No. (“ASU”) 2014-09, Revenue from Contracts with Customers, as a new Topic, Accounting Standards Codification (“ASC”) Topic 606. The new revenue recognition standard provides a five-step analysis of transactions to determine when and how revenue is recognized. The core principle is that a company should recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. This ASU originally was effective for annual periods beginning after December 15, 2016, including interim periods within that reporting period. This ASU shall be applied retrospectively to each period presented or as a cumulative-effect adjustment as of the date of adoption. In August 2015, the FASB issued ASU 2015-14, Revenue from Contracts with Customers (Topic 606), deferring the effective date of ASU 2014-09 by one year. We can elect to adopt the provisions of ASU 2014-09 for annual periods beginning after December 15, 2017, including interim periods within that reporting period. The FASB also agreed to allow entities to choose to adopt the standard as of the original effective date. We are currently assessing the adoption date and potential impact of adopting ASU 2014-09 on our financial statements and related disclosures. 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 is intended to provide enhanced transparency and comparability by requiring lessees to record right-of-use assets and corresponding lease liabilities on the balance sheet. ASU 2016-02 will continue to classify leases as either finance or operating, with classification affecting the pattern of expense recognition in the statement of income. ASU 2016-02 is effective for fiscal years beginning after December 15, 2018, including interim periods within those fiscal years. Early adoption is permitted. ASU 2016-02 is required to be applied with a modified retrospective approach to each prior reporting period presented with various optional practical expedients. We are currently assessing the adoption date and the potential impact of adopting ASU 2016-02 on our financial statements and related disclosures. In March 2016, the FASB issued ASU 2016-09, Compensation—Stock Compensation (Topic 718): Improvements to Employee Share-Based Payment Accounting. ASU 2016-09 changes how companies account for certain aspects of share-based payment awards to employees, including the accounting for income taxes, forfeitures and statutory tax withholding requirements, as well as classification in the statement of cash flows. ASU 2016-09 is effective for annual periods beginning after December 15, 2016, including interim periods within those annual periods. If an entity early adopts in an interim period, any adjustments should be reflected as of the beginning of the fiscal year that includes that interim period and the entity must adopt all of the amendments from ASU 2016-09 in the same period. We are currently assessing the potential impact of adopting ASU 2016-09 on our financial statements and related disclosures. Corning does not expect adoption of this standard to have a material impact on its consolidated results of operations and financial condition. In August 2016, the FASB issued ASU 2016-15, Statement of Cash Flows (Topic 230): Classification of Certain Cash Receipts and Cash Payments. ASU 2016-15 refines how companies classify 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. ASU 2016-15 is effective for annual periods beginning after December 15, 2017, and for interim periods within fiscal years beginning after December 15, 2018. Early adoption is permitted. We are currently assessing the adoption date and the potential impact of adopting ASU 2016-15 on our financial statements and related disclosures. In October 2016, the FASB issued ASU No. 2016-16, Income Taxes (Topic 740): Intra-Entity Transfers of Assets Other Than Inventory, which reduces the complexity in the accounting standards by allowing the recognition of current and deferred income taxes for an intra-entity asset transfer, other than inventory, when the transfer occurs. Historically, recognition of the income tax consequence was not recognized until the asset was sold to an outside party. This amendment should be applied on a modified retrospective basis through a cumulative-effect adjustment directly to retained earnings as of the beginning of the period of adoption. ASU 2016-16 is effective for annual periods beginning after December 15, 2017, including interim reporting periods within those annual reporting periods. Early adoption is permitted for all entities as of the beginning of an annual reporting period for which financial statements (interim or annual) have not been issued or made available for issuance. We are currently evaluating the impact of ASU 2016-16 on our consolidated financial statements and related disclosures.

Note 2 - Restructuring, Impai25

Note 2 - Restructuring, Impairment and Other Charges (Tables)	9 Months Ended
	Sep. 30, 2016
Notes Tables
Schedule of Restructuring Reserve by Type of Cost [Table Text Block]	Reserve at January 1, 2016 Net Charges/ Reversals Non-cash adjustments Cash payments Reserve at September 30, 2016 Restructuring: Employee related costs $ 3 $ 15 $ (1) $ (9) $ 8 Other charges 1 (1) Total restructuring activity $ 3 $ 16 $ (1) $ (10) $ 8 Disposal of long-lived assets $ 62 Total restructuring, impairment and other charges $ 78
Restructuring and Related Costs [Table Text Block]	Operating segment Employee- related and other charges Display Technologies $ 4 Optical Communications 6 Environmental Technologies 5 Specialty Materials 12 Life Sciences 3 All Other 40 Corporate 8 Total restructuring, impairment and other charges $ 78

Note 3 - Commitments, Conting26

Note 3 - Commitments, Contingencies, and Guarantees (Tables)	9 Months Ended
	Sep. 30, 2016
Notes Tables
Schedule of Loss Contingencies by Contingency [Table Text Block]	Amended PCC Plan Non-PCC Total Asbestos Litigation Liability Equity Interests Fixed Series of Payments Fair Value of Asbestos Litigation Liability as of Dec. 31, 2015 $ 238 $ 290 $ 150 $ 678 Less: Contribution of PCC & PCE Equity Interests - Carrying Value 182 - - 182 Gain on Contribution of Equity Interests 56 - - 56 Asbestos Litigation Liability as of September 30, 2016 $ - $ 290 $ 150 $ 440

Note 5 - Income Taxes (Tables)

Note 5 - Income Taxes (Tables)	9 Months Ended
	Sep. 30, 2016
Notes Tables
Schedule of Income Tax Provisions and Rates [Table Text Block]	Three months ended September 30, Nine months ended September 30, 2016 2015 2016 2015 Benefit (provision) for income taxes $ 27 $ (6) $ 835 $ (202) Effective tax rate (10.5%) 2.8% (64.8%) 15.3%

Note 6 - Earnings Per Common 28

Note 6 - Earnings Per Common Share (Tables)	9 Months Ended
	Sep. 30, 2016
Notes Tables
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]	Three months ended September 30, Nine months ended September 30, 2016 2015 2016 2015 Net income attributable to Corning Incorporated $ 284 $ 212 $ 2,123 $ 1,115 Less: Series A convertible preferred stock dividend 24 24 73 73 Net income available to common stockholders – basic 260 188 2,050 1,042 Plus: Series A convertible preferred stock dividend (1) 24 73 73 Net income available to common stockholders – diluted $ 284 $ 188 $ 2,123 $ 1,115 Weighted-average common shares outstanding – basic 978 1,210 1,046 1,241 Effect of dilutive securities: Stock options and other dilutive securities 9 8 9 10 Series A convertible preferred stock (1) 115 115 115 Weighted-average common shares outstanding – diluted 1,102 1,218 1,170 1,366 Basic earnings per common share $ 0.27 $ 0.16 $ 1.96 $ 0.84 Diluted earnings per common share $ 0.26 $ 0.15 $ 1.81 $ 0.82 Antidilutive potential shares excluded from diluted earnings per common share: Series A convertible preferred stock (1) 115 Employee stock options and awards 13 29 18 22 Accelerated share repurchase forward contract 14 14 Total 27 144 32 22

Note 8 - Inventories, Net of 29

Note 8 - Inventories, Net of Inventory Reserves (Tables)	9 Months Ended
	Sep. 30, 2016
Notes Tables
Schedule of Inventory, Current [Table Text Block]	September 30, 2016 December 31, 2015 Finished goods $ 636 $ 633 Work in process 301 264 Raw materials and accessories 278 200 Supplies and packing materials 301 288 Total inventories, net of inventory reserves $ 1,516 $ 1,385

Note 9 - Investments (Tables)

Note 9 - Investments (Tables)	9 Months Ended
	Sep. 30, 2016
Notes Tables
Investment Gain on Realignment [Table Text Block]	Cash $ 4,818 Carrying Value of Dow Corning Equity Investment (1,560) Carrying Value of HSG Equity Investment (383) Other (1) (199) Gain $ 2,676
Equity Method Investments [Table Text Block]	Ownership interest September 30, 2016 December 31, 2015 Affiliated companies accounted for by the equity method Dow Corning (1) 50% $ 1,483 All other (1) 20% to 50% $ 285 422 285 1,905 Other investments 67 70 Subtotal Investment Assets $ 352 $ 1,975 Affiliated companies accounted for by the equity method HSG (2)(3) 50% $ 343 Subtotal Investment Liabilities $ 343

Note 10 - Goodwill and Other 31

Note 10 - Goodwill and Other Intangible Assets (Tables)	9 Months Ended
	Sep. 30, 2016
Notes Tables
Schedule of Goodwill [Table Text Block]	Optical Communications Display Technologies Specialty Materials Life Sciences All Other Total Balance at December 31, 2015 $ 439 $ 128 $ 150 $ 562 $ 101 $ 1,380 Acquired goodwill (1) 175 175 Measurement period adjustment (2) (6) (6) Foreign currency translation adjustment 7 5 6 2 20 Balance at September 30, 2016 $ 615 $ 133 $ 150 $ 568 $ 103 $ 1,569
Schedule of Finite-Lived Intangible Assets [Table Text Block]	September 30, 2016 December 31, 2015 Gross Accumulated amortization Net Gross Accumulated amortization Net Amortized intangible assets: Patents, trademarks, and trade names $ 367 $ 176 $ 191 $ 350 $ 162 $ 188 Customer lists and other 744 138 606 621 103 518 Total $ 1,111 $ 314 $ 797 $ 971 $ 265 $ 706

Note 11 - Employee Retirement32

Note 11 - Employee Retirement Plans (Tables)	9 Months Ended
	Sep. 30, 2016
Notes Tables
Schedule of Net Benefit Costs [Table Text Block]	Pension benefits Postretirement benefits Three months ended September 30, Nine months ended September 30, Three months ended September 30, Nine months ended September 30, 2016 2015 2016 2015 2016 2015 2016 2015 Service cost $ 22 $ 22 $ 65 $ 67 $ 3 $ 3 $ 7 $ 10 Interest cost 31 36 93 109 6 8 19 24 Expected return on plan assets (41) (44) (124) (133) Amortization of net loss 1 (1) 3 Amortization of prior service cost (credit) 1 2 4 5 (1) (2) (3) (5) Recognition of actuarial loss 26 60 8 Total pension and postretirement benefit expense $ 39 $ 16 $ 98 $ 56 $ 8 $ 10 $ 22 $ 32

Note 12 - Other Liabilities (Ta

Note 12 - Other Liabilities (Tables)	9 Months Ended
	Sep. 30, 2016
Notes Tables
Other Liabilities [Table Text Block]	September 30, 2016 December 31, 2015 Current liabilities: Wages and employee benefits $ 472 $ 491 Income taxes 149 53 Asbestos and other litigation reserves 73 238 Derivative instruments 204 55 Other current liabilities 456 471 Other accrued liabilities $ 1,354 $ 1,308 Non-current liabilities: Asbestos and other litigation reserves $ 394 $ 440 Derivative instruments 1,543 88 Investment in Hemlock Semiconductor Group (1) 343 Defined benefit pension plan liabilities 762 672 Other non-current liabilities 1,062 1,042 Other liabilities $ 4,104 $ 2,242

Note 13 - Hedging Activities (T

Note 13 - Hedging Activities (Tables)	9 Months Ended
	Sep. 30, 2016
Not Designated as Hedging Instrument [Member]
Notes Tables
Schedule of Derivative Instruments, Effect on Other Comprehensive Income (Loss) [Table Text Block]	Undesignated derivatives Location of gain/(loss) recognized in income Gain (loss) recognized in income Three months ended September 30, Nine months ended September 30, 2016 2015 2016 2015 Foreign exchange contracts – balance sheet Foreign currency hedge gain (loss), net $ 1 $ (6) $ (27) $ 7 Foreign exchange contracts – loans Foreign currency hedge gain (loss), net (4) 1 (48) 3 Foreign currency hedges related to translated earnings Foreign currency hedge gain (loss), net (237) (149) (2,295) 42 Total undesignated $ (240) $ (154) $ (2,370) $ 52
Designated as Hedging Instrument [Member]
Notes Tables
Schedule of Derivative Instruments, Effect on Other Comprehensive Income (Loss) [Table Text Block]	Effect of designated derivative instruments on the consolidated financial statements for the three months ended September 30 Derivatives in hedging relationships Gain/(loss) recognized in other comprehensive income (OCI) Location of gain/(loss) reclassified from accumulated OCI into income (effective) Gain/(loss) reclassified from accumulated OCI into income (effective) (1) 2016 2015 2016 2015 Interest rate hedges Sales $ 1 $ 4 Cost of sales (13) 1 Foreign exchange contracts $ 26 $ (58) Total cash flow hedges $ 26 $ (58) $ (12) $ 5 Effect of derivative instruments on the consolidated financial statements for the nine months ended September 30 Derivatives in hedging relationships Gain/(loss) recognized in other comprehensive income (OCI) Location of gain/(loss) reclassified from accumulated OCI into income (effective) Gain/(loss) reclassified from accumulated OCI into income (effective) (1) 2016 2015 2016 2015 Interest rate hedges $ (7) Sales $ 2 $ 14 Cost of sales (27) 7 Foreign exchange contracts $ (37) (24) Total cash flow hedges $ (37) $ (31) $ (25) $ 21
Schedule of Notional Amounts of Outstanding Derivative Positions [Table Text Block]	U.S. Dollar Asset derivatives Liability derivatives Gross notional amount Balance sheet location Fair value Balance sheet location Fair value Sept. 30, 2016 Dec. 31, 2015 Sept. 30, 2016 Dec. 31, 2015 Sept. 30, 2016 Dec. 31, 2015 Derivatives designated as hedging instruments Foreign exchange contracts (1) $ 527 $ 782 Other current assets $ 1 $ 5 Other accrued liabilities $ (54) $ (10) Other assets 1 Other liabilities (12) (23) Interest rate contracts 550 550 Other assets 7 Other liabilities (4) Derivatives not designated as hedging instruments Foreign exchange contracts, other 759 1,095 Other current assets 2 6 Other accrued liabilities (36) (12) Translated earnings contracts 17,595 11,972 Other current assets 66 511 Other accrued liabilities (114) (33) Other assets 27 472 Other liabilities (1,531) (61) Total derivatives $19,431 $14,399 $103 $995 $(1,747) $(143)

Note 14 - Fair Value Measurem35

Note 14 - Fair Value Measurements (Tables)	9 Months Ended
	Sep. 30, 2016
Notes Tables
Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block]	Fair value measurements at reporting date using September 30, 2016 Quoted prices in active markets for identical assets (Level 1) Significant other observable inputs (Level 2) Significant unobservable inputs (Level 3) Current assets: Other current assets (1) $ 68 $ 68 Non-current assets: Other assets (1)(2) $ 350 $ 64 $ 286 Current liabilities: Other accrued liabilities (1) $ 204 $ 204 Non-current liabilities: Other liabilities (1) $ 1,543 $ 1,543 Fair value measurements at reporting date using December 31, 2015 Quoted prices in active markets for identical assets (Level 1) Significant other observable inputs (Level 2) Significant unobservable inputs (Level 3) Current assets: Short-term investments $ 100 $ 100 Other current assets (1) $ 522 $ 522 Non-current assets: Other assets (1)(2) $ 752 $ 506 $ 246 Current liabilities: Other accrued liabilities (1) $ 55 $ 55 Non-current liabilities: Other liabilities (1) $ 98 $ 88 $ 10

Note 15 - Shareholders' Equity

Note 15 - Shareholders' Equity (Tables)	9 Months Ended
	Sep. 30, 2016
Notes Tables
Comprehensive Income (Loss) [Table Text Block]	Three months ended September 30, Nine months ended September 30, 2016 2015 2016 2015 Beginning balance $ (547) $ (877) $ (1,171) $ (581) Other comprehensive income (loss) 235 (163) 860 (399) Equity method affiliates 10 (18) 9 (78) Net current-period other comprehensive income (loss) 245 (181) 869 (477) Ending balance $ (302) $ (1,058) $ (302) $ (1,058) Three months ended September 30, Nine months ended September 30, 2016 2015 2016 2015 Beginning balance $ (323) $ (703) $ (588) $ (709) Other comprehensive (loss) income before reclassifications (2) (31) (1) (64) 5 Amounts reclassified from accumulated other comprehensive income (2) 26 1 60 11 Equity method affiliates (3) 6 264 (4) Net current-period other comprehensive income (5) 6 260 12 Ending balance $ (328) $ (697) $ (328) $ (697)

Note 16 - Share-based Compens37

Note 16 - Share-based Compensation (Tables)	9 Months Ended
	Sep. 30, 2016
Notes Tables
Schedule of Share-based Compensation, Stock Options, Activity [Table Text Block]	Number of Shares (in thousands) Weighted- Average Exercise Price Weighted- Average Remaining Contractual Term in Years Aggregate Intrinsic Value (in thousands) Options Outstanding as of December 31, 2015 42,738 $19.40 Granted 1,669 19.98 Exercised (5,838) 15.63 Forfeited and Expired (4,317) 26.02 Options Outstanding as of September 30, 2016 34,252 19.24 3.96 $164,226 Options Expected to Vest as of September 30, 2016 34,208 19.23 3.95 164,091 Options Exercisable as of September 30, 2016 29,475 18.99 3.21 150,477
Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block]	Three months ended September 30, Nine months ended September 30, 2016 2015 2016 2015 Expected volatility 38.6% 44.2% 38.6 - 43.1% 44.2 - 44.9% Weighted-average volatility 38.6% 44.2% 38.6 - 43.1% 44.2 - 44.9% Expected dividends 2.34% 2.67% 2.34 - 2.94% 1.92 - 2.67% Risk-free rate 1.4% 2.0% 1.4 - 1.6% 1.9 - 2.0% Average risk-free rate 1.4% 2.0% 1.4 - 1.6% 1.9 - 2.0% Expected term (in years) 7.4 7.2 7.4 - 7.4 7.2 - 7.2 Pre-vesting departure rate 0.6% 0.6% 0.6 - 0.6% 0.6 - 0.6%
Schedule of Share-based Compensation, Restricted Stock and Restricted Stock Units Activity [Table Text Block]	Shares (000’s) Weighted Average Grant-Date Fair Value Non-vested shares and share units at December 31, 2015 5,242 $ 17.91 Granted 1,415 20.57 Vested (1,802) 14.48 Forfeited (75) 20.78 Non-vested shares and share units at September 30, 2016 4,780 $ 19.95

Note 17 - Reportable Segments (

Note 17 - Reportable Segments (Tables)	9 Months Ended
	Sep. 30, 2016
Notes Tables
Schedule of Segment Reporting Information, by Segment [Table Text Block]	Display Technologies Optical Communications Environmental Technologies Specialty Materials Life Sciences All Other Total Three months ended September 30, 2016 Net sales $ 902 $ 795 $ 264 $ 295 $ 214 $ 37 $ 2,507 Depreciation (1) $ 152 $ 41 $ 32 $ 26 $ 14 $ 12 $ 277 Amortization of purchased intangibles $ 10 $ 5 $ 2 $ 17 Research, development and engineering expenses (2) $ 14 $ 37 $ 24 $ 31 $ 6 $ 47 $ 159 Equity in earnings of affiliated companies $ (3) $ (3) Income tax (provision) benefit $ (98) $ (49) $ (17) $ (21) $ (8) $ 21 $ (172) Net income (loss) (3) $ 279 $ 78 $ 35 $ 42 $ 16 $ (47) $ 403 Display Technologies Optical Communications Environmental Technologies Specialty Materials Life Sciences All Other Total Three months ended September 30, 2015 Net sales $ 757 $ 747 $ 257 $ 288 $ 211 $ 12 $ 2,272 Depreciation (1) $ 147 $ 41 $ 32 $ 29 $ 15 $ 9 $ 273 Amortization of purchased intangibles $ 7 $ 5 $ 12 Research, development and engineering expenses (2) $ 28 $ 33 $ 21 $ 27 $ 6 $ 34 $ 149 Equity in earnings of affiliated companies $ (3) $ 4 $ 1 Income tax (provision) benefit $ (119) $ (34) $ (19) $ (23) $ (9) $ 19 $ (185) Net income (loss) (3) $ 255 $ 70 $ 38 $ 46 $ 18 $ (38) $ 389 Display Technologies Optical Communications Environmental Technologies Specialty Materials Life Sciences All Other Total Nine months ended September 30, 2016 Net sales $ 2,408 $ 2,186 $ 787 $ 788 $ 633 $ 112 $ 6,914 Depreciation (1) $ 452 $ 125 $ 97 $ 81 $ 42 $ 34 $ 831 Amortization of purchased intangibles $ 25 $ 15 $ 6 $ 46 Research, development and engineering expenses (2) $ 49 $ 110 $ 75 $ 96 $ 18 $ 139 $ 487 Restructuring, impairment and other charges $ 4 $ 6 $ 5 $ 12 $ 3 $ 40 $ 70 Equity in earnings of affiliated companies $ (8) $ (8) Income tax (provision) benefit $ (277) $ (99) $ (52) $ (52) $ (22) $ 87 $ (415) Net income (loss) (3) $ 692 $ 172 $ 106 $ 106 $ 45 $ (187) $ 934 Display Technologies Optical Communications Environmental Technologies Specialty Materials Life Sciences All Other Total Nine months ended September 30, 2015 Net sales $ 2,354 $ 2,244 $ 799 $ 832 $ 619 $ 32 $ 6,880 Depreciation (1) $ 455 $ 122 $ 93 $ 82 $ 45 $ 29 $ 826 Amortization of purchased intangibles $ 24 $ 15 $ 39 Research, development and engineering expenses (2) $ 78 $ 101 $ 67 $ 87 $ 17 $ 123 $ 473 Equity in earnings of affiliated companies $ (8) $ 12 $ 4 Income tax (provision) benefit $ (387) $ (100) $ (64) $ (66) $ (26) $ 63 $ (580) Net income (loss) (3) $ 852 $ 204 $ 132 $ 128 $ 52 $ (131) $ 1,237
Reconciliation of Revenue from Segments to Consolidated [Table Text Block]	Three months ended September 30, Nine months ended September 30, 2016 2015 2016 2015 Net income of reportable segments $ 450 $ 427 $ 1,121 $ 1,368 Net loss of All Other (47) (38) (187) (131) Unallocated amounts: Net financing costs (1) (26) (31) (84) (80) Stock-based compensation expense (10) (11) (33) (36) Exploratory research (27) (32) (82) (86) Corporate contributions (15) (13) (38) (37) Gain on realignment of equity investment 2,676 Equity in earnings of affiliated companies, net of impairments (2) 22 38 126 191 Unrealized loss on foreign currency hedges related to translated earnings (239) (317) (2,441) (447) Resolution of Department of Justice investigation (98) Income tax benefit 199 178 1,253 375 Other corporate items (23) 11 (90) (2) Net income $ 284 $ 212 $ 2,123 $ 1,115

Note 2 - Restructuring, Impai39

Note 2 - Restructuring, Impairment and Other Charges (Details Textual) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Restructuring, Settlement and Impairment Provisions	$ 0	$ 0	$ 78,000,000	$ 0
Expected Cash Expenditures for Restructuring Costs			$ 15,000,000

Note 2 - Restructuring, Impai40

Note 2 - Restructuring, Impairment and Other Charges - Restructuring, Impairment and Other Charges (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Employee Severance [Member]
Reserve			$ 3,000,000
Net Charges/Reversals			15,000,000
Non-cash adjustments			(1,000,000)
Restructuring payments			(9,000,000)
Reserve	$ 8,000,000		8,000,000
Other Restructuring [Member]
Reserve			0
Net Charges/Reversals			1,000,000
Non-cash adjustments			0
Restructuring payments			(1,000,000)
Reserve	0		0
Reserve			3,000,000
Net Charges/Reversals			16,000,000
Non-cash adjustments			(1,000,000)
Restructuring payments			(10,000,000)	$ (38,000,000)
Reserve	8,000,000		8,000,000
Disposal of long-lived assets			62,000,000
Restructuring, Settlement and Impairment Provisions	$ 0	$ 0	$ 78,000,000	$ 0

Note 2 - Restructuring, Impai41

Note 2 - Restructuring, Impairment and Other Charges - Year-to-date Cost for Reportable Segments (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Display Technologies [Member]
Restructuring, Settlement and Impairment Provisions			$ 4,000,000
Optical Communications [Member]
Restructuring, Settlement and Impairment Provisions			6,000,000
Environmental Technologies [Member]
Restructuring, Settlement and Impairment Provisions			5,000,000
Specialty Materials [Member]
Restructuring, Settlement and Impairment Provisions			12,000,000
Life Sciences [Member]
Restructuring, Settlement and Impairment Provisions			3,000,000
Other Segments [Member]
Restructuring, Settlement and Impairment Provisions			40,000,000
Corporate Segment [Member]
Restructuring, Settlement and Impairment Provisions			8,000,000
Restructuring, Settlement and Impairment Provisions	$ 0	$ 0	$ 78,000,000	$ 0

Note 3 - Commitments, Conting42

Note 3 - Commitments, Contingencies, and Guarantees (Details Textual)	3 Months Ended	6 Months Ended	9 Months Ended
	Jun. 30, 2016USD ($)	Sep. 30, 2016USD ($)	Sep. 30, 2016USD ($)	Dec. 31, 2015USD ($)
Pittsburgh Corning Corporation PCC [Member] | PPG Industries, Inc. [Member]
Equity Method Investment, Ownership Percentage		50.00%	50.00%
Pittsburgh Corning Corporation PCC [Member]
Equity Method Investment, Ownership Percentage		50.00%	50.00%
PCC and PCE [Member]
Gain (Loss) on Investments	$ 56,000,000
Asbestos Litigation [Member] | Amended Pittsburgh Corning Corporation Plan [Member]
Loss Contingency, Estimate of Possible Loss		$ 290,000,000	$ 290,000,000	$ 528,000,000
Asbestos Litigation [Member] | Amended Pittsburgh Corning Corporation Plan [Member]
Loss Contingency Accrual, Period Increase (Decrease)		(238,000,000)
Loss Contingency, Accrual, Noncurrent		220,000,000	220,000,000
Loss Contingency, Accrual, Current		70,000,000	70,000,000
Asbestos Litigation [Member] | Non-PCC Asbestos Litigation [Member]
Loss Contingency, Accrual, Noncurrent		150,000,000	$ 150,000,000
Undiscounted Projection of Claims and Related Legal Fees, Period			20 years
Contingent Guarantees [Member]
Guarantor Obligations, Maximum Exposure, Undiscounted		201,000,000	$ 201,000,000	184,000,000
Environmental Cleanup and Related Litigation [Member]
Accrual for Environmental Loss Contingencies		45,000,000	45,000,000	37,000,000
Loss Contingency, Accrual, Noncurrent		394,000,000	394,000,000	440,000,000
Loss Contingency, Accrual, Current		73,000,000	73,000,000	238,000,000
Recorded Unconditional Purchase Obligation		$ 255,000,000	$ 255,000,000	$ 220,000,000
Number of Hazardous Waste Sites		17	17

Note 3 - Commitments, Conting43

Note 3 - Commitments, Contingencies, and Guarantees - Amount of the Asbestos Litigation Liability (Details)	9 Months Ended
	Sep. 30, 2016USD ($)
Amended PCC Plan [Member] | Equity Interests [Member]
Fair Value of Asbestos Litigation Liability	$ 238,000,000
Less: Contribution of PCC & PCE Equity Interests - Carrying Value	182,000,000
Gain on Contribution of Equity Interests	56,000,000
Asbestos Litigation Liability	0
Amended PCC Plan [Member] | Fixed Series of Payments [Member]
Fair Value of Asbestos Litigation Liability	290,000,000
Less: Contribution of PCC & PCE Equity Interests - Carrying Value	0
Gain on Contribution of Equity Interests	0
Asbestos Litigation Liability	290,000,000
Non-PCC Asbestos Litigation [Member]
Fair Value of Asbestos Litigation Liability	150,000,000
Less: Contribution of PCC & PCE Equity Interests - Carrying Value	0
Gain on Contribution of Equity Interests	0
Asbestos Litigation Liability	150,000,000
Amended PCC Plan and Non-PCC Asbestos Claims [Member]
Fair Value of Asbestos Litigation Liability	678,000,000
Less: Contribution of PCC & PCE Equity Interests - Carrying Value	182,000,000
Gain on Contribution of Equity Interests	56,000,000
Asbestos Litigation Liability	$ 440,000,000

Note 4 - Debt (Details Textual)

Note 4 - Debt (Details Textual) - USD ($)	Jul. 20, 2016	Sep. 30, 2016	Dec. 31, 2015	Jun. 30, 2015
Amended Credit Facility [Member]
Line of Credit Facility, Maximum Borrowing Capacity		$ 2,000,000,000
Long-term Line of Credit		0
1.50% Due May 8, 2018 [Member] | Senior Notes [Member]
Debt Instrument, Face Amount				$ 375,000,000
Debt Instrument, Interest Rate, Stated Percentage				1.50%
2.90% Due May 15, 2022 [Member] | Senior Notes [Member]
Debt Instrument, Face Amount				$ 375,000,000
Debt Instrument, Interest Rate, Stated Percentage				2.90%
Debt Instrument, Fair Value Disclosure		4,300,000,000	$ 4,100,000,000
Long-term Debt and Capital Lease Obligations		$ 3,916,000,000	$ 3,890,000,000
Increase (Decrease) to Commercial Paper Maximum Capacity	$ 1,000,000,000
Commercial Paper, Maximum Borrowing Capacity	$ 2,000,000,000

Note 5 - Income Taxes (Details

Note 5 - Income Taxes (Details Textual)	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent	35.00%	35.00%	35.00%	35.00%

Note 5 - Income Taxes - Provisi

Note 5 - Income Taxes - Provision for Income Taxes (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Income tax (provision) benefit	$ 27,000,000	$ (6,000,000)	$ 835,000,000	$ (202,000,000)
Effective tax rate	(10.50%)	2.80%	(64.80%)	15.30%

Note 6 - Earnings Per Common 47

Note 6 - Earnings Per Common Share - Computation of Basic and Diluted Earnings per Common Share (Details) - USD ($)		3 Months Ended		9 Months Ended
		Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Convertible Preferred Stock, Series A [Member]
Series A convertible preferred stock dividend		$ 24,000,000	$ 24,000,000	$ 73,000,000	$ 73,000,000
Plus: Series A convertible preferred stock dividend (1)		$ 24,000,000		$ 73,000,000	$ 73,000,000
Effect of dilutive securities:
Effect of dilutive securities (in shares)	[1]	115,000,000		115,000,000	115,000,000
Stock Options and Other Dilutive Securities [Member]
Effect of dilutive securities:
Effect of dilutive securities (in shares)		9,000,000	8,000,000	9,000,000	10,000,000
Convertible Preferred Stock, Series A [Member]
Antidilutive potential shares excluded from diluted earnings per common share:
Antidilutive potential shares excluded from diluted earnings per common share (in shares)	[1]	0	115,000,000	0	0
Stock Compensation Plan [Member]
Antidilutive potential shares excluded from diluted earnings per common share:
Antidilutive potential shares excluded from diluted earnings per common share (in shares)		13,000,000	29,000,000	18,000,000	22,000,000
Accelerated Share Repurchase Foward Contracts [Member]
Antidilutive potential shares excluded from diluted earnings per common share:
Antidilutive potential shares excluded from diluted earnings per common share (in shares)		14,000,000	0	14,000,000	0
Net income attributable to Corning Incorporated		$ 284,000,000	$ 212,000,000	$ 2,123,000,000	$ 1,115,000,000
Net income available to common stockholders – basic		260,000,000	188,000,000	2,050,000,000	1,042,000,000
Net income available to common stockholders – diluted		$ 284,000,000	$ 188,000,000	$ 2,123,000,000	$ 1,115,000,000
Weighted-average common shares outstanding – basic (in shares)		978,000,000	1,210,000,000	1,046,000,000	1,241,000,000
Weighted-average common shares outstanding – diluted (in shares)		1,102,000,000	1,218,000,000	1,170,000,000	1,366,000,000
Basic earnings per common share (in dollars per share)		$ 0.27	$ 0.16	$ 1.96	$ 0.84
Diluted earnings per common share (in dollars per share)		$ 0.26	$ 0.15	$ 1.81	$ 0.82
Antidilutive potential shares excluded from diluted earnings per common share (in shares)		27,000,000	144,000,000	32,000,000	22,000,000
[1]	In the three months ended September 30, 2015, the Series A convertible preferred stock was anti-dilutive and therefore excluded from the calculation of diluted earnings per share.

Note 7 - Available-for-Sale I48

Note 7 - Available-for-Sale Investments (Details Textual) - USD ($)	9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Dec. 31, 2015
Available-for-sale Securities, Current	$ 0		$ 100,000,000
Available-for-sale Securities, Noncurrent	30,000,000		33,000,000
Available-for-sale Securities, Amortized Cost Basis	33,000,000		$ 37,000,000
Proceeds from Sale of Short-term Investments	$ 121,000,000	$ 1,046,000,000

Note 8 - Inventories, Net of 49

Note 8 - Inventories, Net of Inventory Reserves - Inventories, Net (Details) - USD ($) $ in Millions	Sep. 30, 2016	Dec. 31, 2015
Finished goods	$ 636	$ 633
Work in process	301	264
Raw materials and accessories	278	200
Supplies and packing materials	301	288
Total inventories, net of inventory reserves	$ 1,516	$ 1,385

Note 9 - Investments (Details T

Note 9 - Investments (Details Textual) - USD ($)		May 31, 2016	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015	Dec. 31, 2015
Dow Corning Corporation [Member]
Equity Method Investment, Ownership Percentage		50.00%
Subsidiary or Equity Method Investee, Cumulative Percentage Ownership after All Transactions		100.00%
Equity Method Investments	[1]		$ 0		$ 0		$ 1,483,000,000
HSC Operating Partnernship [Member] | HSG [Member]
Equity Method Investment, Ownership Percentage			80.50%		80.50%
Reclassification out of Accumulated Other Comprehensive Income [Member]
Defined Benefit Plan, Actuarial Gain (Loss)					$ (260,000,000)
Foreign Currency Transaction Gain, before Tax					45,000,000
Equity Method Investments		$ 4,800,000,000	$ 285,000,000		285,000,000		$ 1,905,000,000
Removal of Carrying Value of Equity Method Investment		$ 383,000,000			383,000,000
Release of Deferred Tax Liabilities					105,000,000
Realignment of Equity Investment, Gain (Loss)				$ 0	$ 2,676,000,000	$ 0
[1]	Amounts reflect Corning's direct ownership interests in the respective affiliated companies at September 30, 2016 and December 31, 2015. Corning does not control any of such entities.

Note 9 - Investments - Gain of

Note 9 - Investments - Gain of Realignment (Details) - USD ($)		May 31, 2016	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Cash					$ 4,818,000,000	$ 0
Carrying Value of Dow Corning Equity Investment					(1,560,000,000)
Carrying Value of HSG Equity Investment		$ (383,000,000)			(383,000,000)
Other (1)	[1]				(199,000,000)
Gain				$ 0	$ 2,676,000,000	$ 0
[1]	Primarily consists of the release of accumulated other comprehensive income items related to unamortized actuarial losses related to Dow Corning's pension plan and foreign currency translation gains in the amounts of $260 million and $45 million, respectively.

Note 9 - Investments - Investme

Note 9 - Investments - Investments (Details) - USD ($)		9 Months Ended
		Sep. 30, 2016	May 31, 2016	Dec. 31, 2015
Parent Company [Member] | Dow Corning Corporation [Member]
Ownership interest	[1]	50.00%
Parent Company [Member] | All Other [Member]
Ownership interest, minimum	[1]	20.00%
Ownership interest, maximum	[1]	50.00%
Parent Company [Member] | HSG [Member] | Other Liabilities [Member]
Ownership interest	[2],[3]	50.00%
Dow Corning Corporation [Member]
Ownership interest			50.00%
Equity Method Investments	[1]	$ 0		$ 1,483,000,000
Investment, amount	[1]	0		1,483,000,000
All Other [Member]
Equity Method Investments	[1]	285,000,000		422,000,000
Investment, amount	[1]	285,000,000		422,000,000
HSG [Member] | Other Liabilities [Member]
Investment liabilities	[2],[3]	343,000,000
Equity Method Investments		285,000,000	$ 4,800,000,000	1,905,000,000
Investment, amount		285,000,000	$ 4,800,000,000	1,905,000,000
Other investments		67,000,000		70,000,000
Investment assets		352,000,000		$ 1,975,000,000
Investment liabilities		$ 343,000,000
[1]	Amounts reflect Corning's direct ownership interests in the respective affiliated companies at September 30, 2016 and December 31, 2015. Corning does not control any of such entities.
[2]	HSG indirectly holds an 80.5% interest in a HSG operating partnership.
[3]	The negative carrying value of the investment in HSG is recorded in Other Liabilities.

Note 10 - Goodwill and Other 53

Note 10 - Goodwill and Other Intangible Assets (Details Textual) - USD ($)	3 Months Ended			9 Months Ended
	Sep. 30, 2016	Jun. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015	Dec. 31, 2015
Optical Communications [Member]
Business Combination, Consideration Transferred		$ 296,000,000
Optical Communications [Member]
Goodwill, Impaired, Accumulated Impairment Loss	$ 6,500,000,000			$ 6,500,000,000		$ 6,500,000,000
Goodwill, Gross	8,100,000,000			8,100,000,000		$ 7,900,000,000
Finite-lived Intangible Assets Acquired				127,000,000
Finite Lived Intangible Assets, Foreign Currency Translation Gain (Loss)				11,000,000
Amortization of Intangible Assets	17,000,000		$ 12,000,000	46,000,000	$ 40,000,000
Finite-Lived Intangible Assets, Amortization Expense, Remainder of Fiscal Year	67,000,000			67,000,000
Finite-Lived Intangible Assets, Amortization Expense, Year Two	72,000,000			72,000,000
Finite-Lived Intangible Assets, Amortization Expense, Year Three	72,000,000			72,000,000
Finite-Lived Intangible Assets, Amortization Expense, Year Four	71,000,000			71,000,000
Finite-Lived Intangible Assets, Amortization Expense, Year Five	66,000,000			66,000,000
Finite-Lived Intangible Assets, Amortization Expense, after Year Five	$ 66,000,000			$ 66,000,000

Note 10 - Goodwill and Other 54

Note 10 - Goodwill and Other Intangible Assets - Carrying Amount of Goodwill by Segment (Details)	9 Months Ended
	Sep. 30, 2016USD ($)
Optical Communications [Member]
Balance	$ 439,000,000
Acquired goodwill (1)	175,000,000	[1]
Measurement period adjustment (2)	(6,000,000)	[2]
Foreign currency translation adjustment	7,000,000
Balance	615,000,000
Display Technologies [Member]
Balance	128,000,000
Acquired goodwill (1)	0	[1]
Measurement period adjustment (2)	0	[2]
Foreign currency translation adjustment	5,000,000
Balance	133,000,000
Specialty Materials [Member]
Balance	150,000,000
Acquired goodwill (1)	0	[1]
Measurement period adjustment (2)	0	[2]
Foreign currency translation adjustment	0
Balance	150,000,000
Life Sciences [Member]
Balance	562,000,000
Acquired goodwill (1)	0	[1]
Measurement period adjustment (2)	0	[2]
Foreign currency translation adjustment	6,000,000
Balance	568,000,000
Other Segments [Member]
Balance	101,000,000
Acquired goodwill (1)	0	[1]
Measurement period adjustment (2)	0	[2]
Foreign currency translation adjustment	2,000,000
Balance	103,000,000
Balance	1,380,000,000
Acquired goodwill (1)	175,000,000	[1]
Measurement period adjustment (2)	(6,000,000)	[2]
Foreign currency translation adjustment	20,000,000
Balance	$ 1,569,000,000
[1]	The Company completed an acquisition in the Optical Communications segment during the first first half of 2016 with a purchase price of $296 million.
[2]	In the third quarter of 2016, minor adjustments were made to the preliminary allocation of the total purchase consideration related to a second quarter acquisition.

Note 10 - Goodwill and Other 55

Note 10 - Goodwill and Other Intangible Assets - Other Intangible Assets (Details) - USD ($) $ in Millions	Sep. 30, 2016	Dec. 31, 2015
Patents, Trademarks, and Trade Names [Member]
Amortized intangible assets:
Other intangible assets, gross	$ 367	$ 350
Other intangible assets, accumulated amortization	176	162
Other intangible assets, net	191	188
Customer Lists and Other [Member]
Amortized intangible assets:
Other intangible assets, gross	744	621
Other intangible assets, accumulated amortization	138	103
Other intangible assets, net	606	518
Other intangible assets, gross	1,111	971
Other intangible assets, accumulated amortization	314	265
Other intangible assets, net	$ 797	$ 706

Note 11 - Employee Retirement56

Note 11 - Employee Retirement Plans - Summary of Net Periodic Benefit Cost (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Pension Plan [Member]
Service cost	$ 22,000,000	$ 22,000,000	$ 65,000,000	$ 67,000,000
Interest cost	31,000,000	36,000,000	93,000,000	109,000,000
Expected return on plan assets	(41,000,000)	(44,000,000)	(124,000,000)	(133,000,000)
Amortization of net loss	0	0	0	0
Amortization of prior service cost (credit)	1,000,000	2,000,000	4,000,000	5,000,000
Recognition of actuarial loss	26,000,000	0	60,000,000	8,000,000
Total pension and postretirement benefit expense	39,000,000	16,000,000	98,000,000	56,000,000
Other Postretirement Benefit Plan [Member]
Service cost	3,000,000	3,000,000	7,000,000	10,000,000
Interest cost	6,000,000	8,000,000	19,000,000	24,000,000
Expected return on plan assets	0	0	0	0
Amortization of net loss	0	1,000,000	(1,000,000)	3,000,000
Amortization of prior service cost (credit)	(1,000,000)	(2,000,000)	(3,000,000)	(5,000,000)
Recognition of actuarial loss	0	0	0	0
Total pension and postretirement benefit expense	$ 8,000,000	$ 10,000,000	$ 22,000,000	$ 32,000,000

Note 12 - Other Liabilities (De

Note 12 - Other Liabilities (Details Textual) - Pittsburgh Corning Corporation PCC [Member]	Sep. 30, 2016
PPG Industries, Inc. [Member]
Equity Method Investment, Ownership Percentage	50.00%
Equity Method Investment, Ownership Percentage	50.00%

Note 12 - Other Liabilities - O

Note 12 - Other Liabilities - Other Liabilities (Details) - USD ($)		Sep. 30, 2016	Dec. 31, 2015
Wages and employee benefits		$ 472,000,000	$ 491,000,000
Income taxes		149,000,000	53,000,000
Loss Contingency, Accrual, Current		73,000,000	238,000,000
Derivative instruments		204,000,000	55,000,000
Other current liabilities		456,000,000	471,000,000
Other accrued liabilities		1,354,000,000	1,308,000,000
Asbestos and other litigation reserves		394,000,000	440,000,000
Derivative instruments		1,543,000,000	88,000,000
Investment in Hemlock Semiconductor Group (1)	[1]	343,000,000	0
Defined benefit pension plan liabilities		762,000,000	672,000,000
Other non-current liabilities		1,062,000,000	1,042,000,000
Other liabilities		$ 4,104,000,000	$ 2,242,000,000
[1]	The negative carrying value resulted from a one-time charge to this entity in 2014 for the permanent abandonment of certain assets.

Note 13 - Hedging Activities (D

Note 13 - Hedging Activities (Details Textual) - Not Designated as Hedging Instrument [Member] - USD ($) $ in Billions	Sep. 30, 2016	Dec. 31, 2015
Gross Notional Value, Translated Earnings Contracts [Member]
Derivative, Notional Amount	$ 17.6	$ 12
Gross Notional Value, Collar Options [Member]
Derivative, Notional Amount	2.8	5.6
Gross Notional Value, Foreign Exchange Forward [Member]
Derivative, Notional Amount	14.8	6.4
Net Notional Value, Collar Options [Member]
Derivative, Notional Amount	$ 1.4	$ 2.9

Note 13 - Hedging Activities -

Note 13 - Hedging Activities - Summary of Notional Amounts and Respective Fair Values of Derivative Financial Instruments (Details) - USD ($) $ in Millions		Sep. 30, 2016	Dec. 31, 2015
Foreign Exchange Contract [Member] | Designated as Hedging Instrument [Member] | Other Assets or Liabilities, Current [Member]
Notional amount	[1]	$ 527	$ 782
Asset derivatives, fair value	[1]	1	5
Liability derivatives, fair value	[1]	(54)	(10)
Foreign Exchange Contract [Member] | Designated as Hedging Instrument [Member] | Other Assets or Liabilities, Noncurrent [Member]
Notional amount
Asset derivatives, fair value			1
Liability derivatives, fair value		(12)	(23)
Foreign Exchange Contract [Member] | Not Designated as Hedging Instrument [Member] | Other Assets or Liabilities, Current [Member]
Notional amount		759	1,095
Asset derivatives, fair value		2	6
Liability derivatives, fair value		(36)	(12)
Interest Rate Swap [Member] | Designated as Hedging Instrument [Member] | Other Assets or Liabilities, Noncurrent [Member]
Notional amount		550	550
Asset derivatives, fair value		7
Liability derivatives, fair value			(4)
Translated Earnings Contracts [Member] | Not Designated as Hedging Instrument [Member] | Other Assets or Liabilities, Current [Member]
Notional amount		17,595	11,972
Asset derivatives, fair value		66	511
Liability derivatives, fair value		(114)	(33)
Translated Earnings Contracts [Member] | Not Designated as Hedging Instrument [Member] | Other Assets or Liabilities, Noncurrent [Member]
Notional amount
Asset derivatives, fair value		27	472
Liability derivatives, fair value		(1,531)	(61)
Notional amount		19,431	14,399
Asset derivatives, fair value		103	995
Liability derivatives, fair value		$ (1,747)	$ (143)
[1]	Cash flow hedges with a typical duration of 24 months or less.

Note 13 - Hedging Activities 61

Note 13 - Hedging Activities - Effect on Consolidated Financial Statements (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016		Sep. 30, 2015
Interest Rate Hedges [Member] | Cash Flow Hedging [Member] | Sales [Member]
Gain/(loss) recognized in other comprehensive income (OCI)					$ (7)
Gain reclassified from accumulated OCI into income (effective)	1	4	2	[1]	14	[1]
Interest Rate Hedges [Member] | Cash Flow Hedging [Member] | Cost of Sales [Member]
Gain reclassified from accumulated OCI into income (effective)	(13)	1	(27)	[1]	7	[1]
Foreign Exchange Contract [Member] | Cash Flow Hedging [Member] | Cost of Sales [Member]
Gain/(loss) recognized in other comprehensive income (OCI)	26	(58)	(37)		(24)
Gain reclassified from accumulated OCI into income (effective)				[1]		[1]
Cash Flow Hedging [Member]
Gain/(loss) recognized in other comprehensive income (OCI)	26	(58)	(37)		(31)
Gain reclassified from accumulated OCI into income (effective)	(12)	5	(25)	[1]	21	[1]
Gain/(loss) recognized in other comprehensive income (OCI)
[1]	The amount of hedge ineffectiveness at June 30, 2016 and 2015 was insignificant.

Note 13 - Hedging Activities 62

Note 13 - Hedging Activities - Effect on Consolidated Financial Statements (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Foreign Exchange Contracts, Balance Sheet [Member] | Foreign Currency Transaction and Hedge Gain (Loss), Net [Member]
Gain (loss) recognized in income	$ 1,000,000	$ (6,000,000)	$ (27,000,000)	$ 7,000,000
Foreign Exchange Contracts, Loans [Member] | Foreign Currency Transaction and Hedge Gain (Loss), Net [Member]
Gain (loss) recognized in income	(4,000,000)	1,000,000	(48,000,000)	3,000,000
Translated Earnings Contracts [Member] | Foreign Currency Transaction and Hedge Gain (Loss), Net [Member]
Gain (loss) recognized in income	(237,000,000)	(149,000,000)	(2,295,000,000)	42,000,000
Undesignated [Member]
Gain (loss) recognized in income	$ (240,000,000)	$ (154,000,000)	(2,370,000,000)	52,000,000
Gain (loss) recognized in income			$ (2,295,000,000)	$ 42,000,000

Note 14 - Fair Value Measurem63

Note 14 - Fair Value Measurements (Details Textual) - USD ($)	Sep. 30, 2016	Dec. 31, 2015
Samsung Corning Precision Materials Co., Ltd. [Member]
Business Combination, Contingent Consideration, Asset	$ 286,000,000	$ 246,000,000
Liabilities, Fair Value Disclosure, Nonrecurring	0
Assets, Fair Value Disclosure, Nonrecurring	$ 0

Note 14 - Fair Value Measurem64

Note 14 - Fair Value Measurements - Major Categories of Financial Assets and Liabilities Measured on a Recurring Basis (Details) - USD ($)	Sep. 30, 2016		Dec. 31, 2015
Current Assets [Member] | Fair Value, Inputs, Level 1 [Member]
Other current assets		[1]		[2]
Short-term investments			100,000
Current Assets [Member] | Fair Value, Inputs, Level 2 [Member]
Other current assets	68,000	[1]	522,000	[2]
Short-term investments
Current Assets [Member] | Fair Value, Inputs, Level 3 [Member]
Other current assets		[1]		[2]
Short-term investments
Current Assets [Member]
Other current assets	68,000	[1]	522,000	[2]
Short-term investments			100,000
Non Current Assets [Member] | Fair Value, Inputs, Level 1 [Member]
Other assets		[1],[3]		[2],[4]
Non Current Assets [Member] | Fair Value, Inputs, Level 2 [Member]
Other assets	64,000	[1],[3]	506,000	[2],[4]
Non Current Assets [Member] | Fair Value, Inputs, Level 3 [Member]
Other assets	286,000	[1],[3]	246,000	[2],[4]
Non Current Assets [Member]
Other assets	350,000	[1],[3]	752,000	[2],[4]
Current Liabilities [Member] | Fair Value, Inputs, Level 1 [Member]
Other accrued liabilities		[1]		[2]
Current Liabilities [Member] | Fair Value, Inputs, Level 2 [Member]
Other accrued liabilities	204,000	[1]	55,000	[2]
Current Liabilities [Member] | Fair Value, Inputs, Level 3 [Member]
Other accrued liabilities		[1]		[2]
Current Liabilities [Member]
Other accrued liabilities	204,000	[1]	55,000	[2]
Non Current Liabilities [Member] | Fair Value, Inputs, Level 1 [Member]
Other liabilities		[1]		[2]
Non Current Liabilities [Member] | Fair Value, Inputs, Level 2 [Member]
Other liabilities	1,543,000	[1]	88,000	[2]
Non Current Liabilities [Member] | Fair Value, Inputs, Level 3 [Member]
Other liabilities		[1]	10,000	[2]
Non Current Liabilities [Member]
Other liabilities	1,543,000	[1]	98,000	[2]
Other assets	1,209,000,000		1,493,000,000
Other accrued liabilities	1,354,000,000		1,308,000,000
Other liabilities	$ 4,104,000,000		$ 2,242,000,000
[1]	Derivative assets and liabilities include foreign exchange forward and zero-cost collar contracts, and interest rate swaps which are measured using observable quoted prices for similar assets and liabilities.
[2]	Derivative assets and liabilities include foreign exchange contracts which are measured using observable quoted prices for similar assets and liabilities.
[3]	Other assets include asset-backed securities which are measured using observable quoted prices for similar assets and contingent consideration assets or liabilities which are measured by applying an option pricing model using projected future revenue and forecasted foreign exchange rates.
[4]	Other assets include asset-backed securities which are measured using observable quoted prices for similar assets and contingent consideration assets or liabilities which are measured by applying an option pricing model using projected future revenues.

Note 15 - Shareholders' Equit65

Note 15 - Shareholders' Equity (Details Textual) - USD ($)	Jul. 28, 2016	Jan. 15, 2014	Sep. 30, 2016	Jun. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015	Dec. 31, 2015	Oct. 26, 2015
Convertible Preferred Stock, Series A [Member] | Samsung Corning Precision Materials Co., Ltd. [Member]
Stock Issued During Period, Shares, Acquisitions		2,300
Share Price		$ 1,000,000
Stock Issued During Period, Value, Acquisitions		$ 2,300,000,000
Convertible Preferred Stock, Series A [Member]
Preferred Stock, Par or Stated Value Per Share		$ 100
Common Stock [Member]
Convertible Preferred Stock, Shares Issued upon Conversion		50,000
Accumulated Defined Benefit Plans Adjustment Attributable to Parent [Member]
Other Comprehensive Income (Loss), Equity Method Investments, Tax			$ 0		$ 0	$ 19,000,000	$ 0
July 28, 2016 [Member]
Stock Repurchase Program, Authorized Amount	$ 2,000,000,000
Stock Repurchase Program, Authorized Amount, Payment Tranche One	1,500,000,000
Stock Repurchase Program, Authorized Amount, Payment Tranche Two	500,000,000
Payments for Repurchase of Common Stock	$ 2,000,000,000
Treasury Stock, Shares, Acquired	74,400,000
Oct. 26, 2015 [Member]
Stock Repurchase Program, Authorized Amount									$ 4,000,000,000
The 2015 Repurchase Program [Member]
Treasury Stock, Shares, Acquired			15,300,000			96,000,000
Treasury Stock, Value, Acquired, Cost Method			$ 340,000,000			$ 1,901,000,000
Gain on Realignment of Equity Investment [Member]
Foreign Currency Transaction Gain, before Tax				$ 45,000,000		$ 45,000,000
Cumulative Unamortized Actuarial Loss Released During Period, Net of Tax				260,000,000
Cumulative Unamortized Actuarial Loss Released During Period, Tax				19,000,000
Selling, General and Administrative Expenses [Member]
Foreign Currency Transaction Loss, before Tax				22,000,000
Cumulative Unamortized Actuarial Loss Released During Period, Net of Tax				$ 2,000,000
Preferred Stock, Par or Stated Value Per Share			$ 100			$ 100		$ 100
Payments for Repurchase of Common Stock						$ 3,884,000,000	$ 1,905,000,000

Note 15 - Shareholders' Equit66

Note 15 - Shareholders' Equity - Accumulated Other Comprehensive Income (Details) - USD ($)		3 Months Ended		9 Months Ended
		Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Accumulated Foreign Currency Adjustment Attributable to Parent [Member]
Balance		$ (547,000,000)	$ (877,000,000)	$ (1,171,000,000)	$ (581,000,000)
Other comprehensive income (loss)		235,000,000	(163,000,000)	860,000,000	(399,000,000)
Equity method affiliates		10,000,000	(18,000,000)	9,000,000	(78,000,000)
Net current-period other comprehensive income (loss)		245,000,000	(181,000,000)	869,000,000	(477,000,000)
Balance		(302,000,000)	(1,058,000,000)	(302,000,000)	(1,058,000,000)
Accumulated Defined Benefit Plans Adjustment Attributable to Parent [Member]
Balance	[1]	(323,000,000)	(703,000,000)	(588,000,000)	(709,000,000)
Other comprehensive income (loss)	[1],[2]	(31,000,000)	(1,000,000)	(64,000,000)	5,000,000
Equity method affiliates	[1],[3]		6,000,000	264,000,000	(4,000,000)
Net current-period other comprehensive income (loss)	[1]	(5,000,000)	6,000,000	260,000,000	12,000,000
Balance	[1]	(328,000,000)	(697,000,000)	(328,000,000)	(697,000,000)
Amounts reclassified from accumulated other comprehensive income (2)	[1],[2]	26,000,000	$ 1,000,000	60,000,000	$ 11,000,000
Balance				(1,811,000,000)
Balance		$ (715,000,000)		$ (715,000,000)
[1]	All amounts are after tax. Amounts in parentheses indicate debits to accumulated other comprehensive income.
[2]	Tax effects are not significant.
[3]	For the three months ended September 30, 2016, tax effects are not significant. For the nine months ended September 30, 2016, amounts are net of total tax expense of $19 million. For the three and nine months ended September 30, 2015, tax effects are not significant.

Note 16 - Share-based Compens67

Note 16 - Share-based Compensation (Details Textual) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Minimum [Member] | Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period			1 year
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Term			1 year
Minimum [Member]
Stock Options Exercisable Period from Date of Grant			1 year
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Term			7 years 146 days	7 years 73 days
Maximum [Member] | Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period			10 years
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Term			10 years
Maximum [Member]
Stock Options Exercisable Period from Date of Grant			5 years
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Term			7 years 146 days	7 years 73 days
Employee Stock Option [Member]
Allocated Share-based Compensation Expense	$ 2,000,000	$ 2,000,000	$ 10,000,000	$ 13,000,000
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period			10 years
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized	7,000,000		$ 7,000,000
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition			1 year 292 days
Proceeds from Stock Options Exercised			$ 86,000,000	99,000,000
Restricted Stock [Member]
Allocated Share-based Compensation Expense	8,000,000	9,000,000	23,000,000	23,000,000
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized	31,000,000		$ 31,000,000
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition			1 year 328 days
Allocated Share-based Compensation Expense	$ 10,000,000	$ 11,000,000	$ 33,000,000	36,000,000
Proceeds from Stock Options Exercised			86,000,000	99,000,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Intrinsic Value			$ 36,000,000	$ 46,000,000
Years of Historical Volatility Included in Most Recent Volatility			15 years
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Term	7 years 146 days	7 years 73 days

Note 16 - Share-based Compens68

Note 16 - Share-based Compensation - Summary of Information Concerning Stock Options Outstanding Including the Related Transactions under the Stock Option Plans (Details) $ / shares in Units, shares in Thousands, $ in Thousands	9 Months Ended
	Sep. 30, 2016USD ($)$ / sharesshares
Balance (in shares) | shares	42,738
Balance (in dollars per share) | $ / shares	$ 19.40
Granted (in shares) | shares	1,669
Granted (in dollars per share) | $ / shares	$ 19.98
Exercised (in shares) | shares	(5,838)
Exercised (in dollars per share) | $ / shares	$ 15.63
Forfeited and Expired (in shares) | shares	(4,317)
Forfeited and Expired (in dollars per share) | $ / shares	$ 26.02
Balance (in shares) | shares	34,252
Balance (in dollars per share) | $ / shares	$ 19.24
Options Outstanding	3 years 350 days
Options Outstanding | $	$ 164,226
Options Expected to Vest (in shares) | shares	34,208
Options Expected to Vest (in dollars per share) | $ / shares	$ 19.23
Options Expected to Vest	3 years 346 days
Options Expected to Vest | $	$ 164,091
Options Exercisable (in shares) | shares	29,475
Options Exercisable (in dollars per share) | $ / shares	$ 18.99
Options Exercisable	3 years 76 days
Options Exercisable | $	$ 150,477

Note 16 - Share-based Compens69

Note 16 - Share-based Compensation - Inputs Used for Valuation of Option Grants under Stock Option Plans (Details)	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Minimum [Member]
Expected volatility			38.60%	44.20%
Weighted-average volatility			38.60%	44.20%
Expected dividends			2.34%	1.92%
Risk-free rate			1.40%	1.90%
Average risk-free rate			1.40%	1.90%
Expected term (in years)			7 years 146 days	7 years 73 days
Pre-vesting departure rate			0.60%	0.60%
Maximum [Member]
Expected volatility			43.10%	44.90%
Weighted-average volatility			43.10%	44.90%
Expected dividends			2.94%	2.67%
Risk-free rate			1.60%	2.00%
Average risk-free rate			1.60%	2.00%
Expected term (in years)			7 years 146 days	7 years 73 days
Pre-vesting departure rate			0.60%	0.60%
Expected volatility	38.60%	44.20%
Weighted-average volatility	38.60%	44.20%
Expected dividends	2.34%	2.67%
Risk-free rate	1.40%	2.00%
Average risk-free rate	1.40%	2.00%
Expected term (in years)	7 years 146 days	7 years 73 days
Pre-vesting departure rate	0.60%	0.60%

Note 16 - Share-based Compens70

Note 16 - Share-based Compensation - Summary of the Status of Non-vested Time-based Restricted Stock and Restricted Stock Units (Details) - Time-Based Restricted Stock and Restricted Stock Units [Member] shares in Thousands	9 Months Ended
	Sep. 30, 2016$ / sharesshares
Balance (in shares) | shares	5,242
Balance (in dollars per share) | $ / shares	$ 17.91
Granted (in shares) | shares	1,415
Granted (in dollars per share) | $ / shares	$ 20.57
Vested (in shares) | shares	(1,802)
Vested (in dollars per share) | $ / shares	$ 14.48
Forfeited (in shares) | shares	(75)
Forfeited (in dollars per share) | $ / shares	$ 20.78
Balance (in shares) | shares	4,780
Balance (in dollars per share) | $ / shares	$ 19.95

Note 17 - Reportable Segments71

Note 17 - Reportable Segments (Details Textual)	9 Months Ended
	Sep. 30, 2016
Minimum [Member]
Number of Material Formulations	150

Note 17 - Reportable Segments -

Note 17 - Reportable Segments - Reportable Segments (Details) - USD ($)		3 Months Ended		9 Months Ended
		Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Operating Segments [Member] | Display Technologies [Member]
Net sales		$ 902,000,000	$ 757,000,000	$ 2,408,000,000	$ 2,354,000,000
Depreciation	[1]	152,000,000	147,000,000	452,000,000	455,000,000
Amortization of purchased intangibles		0	0	0	0
Research, development and engineering expenses	[2]	14,000,000	28,000,000	49,000,000	78,000,000
Equity in earnings of affiliated companies		0	(3,000,000)	0	(8,000,000)
Income tax (provision) benefit		(98,000,000)	(119,000,000)	(277,000,000)	(387,000,000)
Net income	[3]	279,000,000	255,000,000	692,000,000	852,000,000
Restructuring, impairment and other charges				4,000,000
Operating Segments [Member] | Optical Communications [Member]
Net sales		795,000,000	747,000,000	2,186,000,000	2,244,000,000
Depreciation	[1]	41,000,000	41,000,000	125,000,000	122,000,000
Amortization of purchased intangibles		10,000,000	7,000,000	25,000,000	24,000,000
Research, development and engineering expenses	[2]	37,000,000	33,000,000	110,000,000	101,000,000
Equity in earnings of affiliated companies		0	0	0	0
Income tax (provision) benefit		(49,000,000)	(34,000,000)	(99,000,000)	(100,000,000)
Net income	[3]	78,000,000	70,000,000	172,000,000	204,000,000
Restructuring, impairment and other charges				6,000,000
Operating Segments [Member] | Environmental Technologies [Member]
Net sales		264,000,000	257,000,000	787,000,000	799,000,000
Depreciation	[1]	32,000,000	32,000,000	97,000,000	93,000,000
Amortization of purchased intangibles		0	0	0	0
Research, development and engineering expenses	[2]	24,000,000	21,000,000	75,000,000	67,000,000
Equity in earnings of affiliated companies		0	0	0	0
Income tax (provision) benefit		(17,000,000)	(19,000,000)	(52,000,000)	(64,000,000)
Net income	[3]	35,000,000	38,000,000	106,000,000	132,000,000
Restructuring, impairment and other charges				5,000,000
Operating Segments [Member] | Specialty Materials [Member]
Net sales		295,000,000	288,000,000	788,000,000	832,000,000
Depreciation	[1]	26,000,000	29,000,000	81,000,000	82,000,000
Amortization of purchased intangibles		0	0	0	0
Research, development and engineering expenses	[2]	31,000,000	27,000,000	96,000,000	87,000,000
Equity in earnings of affiliated companies		0	0	0	0
Income tax (provision) benefit		(21,000,000)	(23,000,000)	(52,000,000)	(66,000,000)
Net income	[3]	42,000,000	46,000,000	106,000,000	128,000,000
Restructuring, impairment and other charges				12,000,000
Operating Segments [Member] | Life Sciences [Member]
Net sales		214,000,000	211,000,000	633,000,000	619,000,000
Depreciation	[1]	14,000,000	15,000,000	42,000,000	45,000,000
Amortization of purchased intangibles		5,000,000	5,000,000	15,000,000	15,000,000
Research, development and engineering expenses	[2]	6,000,000	6,000,000	18,000,000	17,000,000
Equity in earnings of affiliated companies		0	0	0
Income tax (provision) benefit		(8,000,000)	(9,000,000)	(22,000,000)	(26,000,000)
Net income	[3]	16,000,000	18,000,000	45,000,000	52,000,000
Restructuring, impairment and other charges				3,000,000
Operating Segments [Member] | Other Segments [Member]
Net sales		37,000,000	12,000,000	112,000,000	32,000,000
Depreciation	[1]	12,000,000	9,000,000	34,000,000	29,000,000
Amortization of purchased intangibles		2,000,000	0	6,000,000	0
Research, development and engineering expenses	[2]	47,000,000	34,000,000	139,000,000	123,000,000
Equity in earnings of affiliated companies		(3,000,000)	4,000,000	(8,000,000)	12,000,000
Income tax (provision) benefit		21,000,000	19,000,000	87,000,000	63,000,000
Net income	[3]	(47,000,000)	(38,000,000)	(187,000,000)	(131,000,000)
Restructuring, impairment and other charges				40,000,000
Operating Segments [Member]
Net sales		2,507,000,000	2,272,000,000	6,914,000,000	6,880,000,000
Depreciation	[1]	277,000,000	273,000,000	831,000,000	826,000,000
Amortization of purchased intangibles		17,000,000	12,000,000	46,000,000	39,000,000
Research, development and engineering expenses	[2]	159,000,000	149,000,000	487,000,000	473,000,000
Equity in earnings of affiliated companies		(3,000,000)	1,000,000	(8,000,000)	4,000,000
Income tax (provision) benefit		(172,000,000)	(185,000,000)	(415,000,000)	(580,000,000)
Net income	[3]	403,000,000	389,000,000	934,000,000	1,237,000,000
Restructuring, impairment and other charges				70,000,000
Display Technologies [Member]
Restructuring, impairment and other charges				4,000,000
Optical Communications [Member]
Restructuring, impairment and other charges				6,000,000
Environmental Technologies [Member]
Restructuring, impairment and other charges				5,000,000
Specialty Materials [Member]
Restructuring, impairment and other charges				12,000,000
Life Sciences [Member]
Restructuring, impairment and other charges				3,000,000
Other Segments [Member]
Restructuring, impairment and other charges				40,000,000
Net sales		2,507,000,000	2,272,000,000	6,914,000,000	6,880,000,000
Depreciation				844,000,000	842,000,000
Amortization of purchased intangibles		17,000,000	12,000,000	46,000,000	40,000,000
Research, development and engineering expenses		187,000,000	181,000,000	569,000,000	561,000,000
Equity in earnings of affiliated companies		19,000,000	39,000,000	119,000,000	195,000,000
Income tax (provision) benefit		27,000,000	(6,000,000)	835,000,000	(202,000,000)
Net income		284,000,000	212,000,000	2,123,000,000	1,115,000,000
Restructuring, impairment and other charges		$ 0	$ 0	$ 78,000,000	$ 0
[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 net segment net income to consolidated net income below.

Note 17 - Reportable Segments73

Note 17 - Reportable Segments - Reconciliation of Reportable Segment Net Income (Loss) to Consolidated Net Income (Details) - USD ($)		3 Months Ended		9 Months Ended
		Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Reportable Segments [Member]
Net income		$ 450,000,000	$ 427,000,000	$ 1,121,000,000	$ 1,368,000,000
Unallocated amounts:
Net income		450,000,000	427,000,000	1,121,000,000	1,368,000,000
Non Reportable Segments [Member]
Net income		(47,000,000)	(38,000,000)	(187,000,000)	(131,000,000)
Unallocated amounts:
Net income		(47,000,000)	(38,000,000)	(187,000,000)	(131,000,000)
Net income		284,000,000	212,000,000	2,123,000,000	1,115,000,000
Net financing costs	[1]	(26,000,000)	(31,000,000)	(84,000,000)	(80,000,000)
Stock-based compensation expense		(10,000,000)	(11,000,000)	(33,000,000)	(36,000,000)
Exploratory research		(27,000,000)	(32,000,000)	(82,000,000)	(86,000,000)
Corporate contributions		(15,000,000)	(13,000,000)	(38,000,000)	(37,000,000)
Gain			0	2,676,000,000	0
Equity in earnings of affiliated companies, net of impairments	[2]	22,000,000	38,000,000	126,000,000	191,000,000
Unrealized loss on foreign currency hedges related to translated earnings		(239,000,000)	(317,000,000)	(2,441,000,000)	(447,000,000)
Resolution of Department of Justice investigation		0	0	(98,000,000)	0
Income tax benefit		199,000,000	178,000,000	1,253,000,000	375,000,000
Other corporate items		(23,000,000)	11,000,000	(90,000,000)	(2,000,000)
Net income		$ 284,000,000	$ 212,000,000	$ 2,123,000,000	$ 1,115,000,000
[1]	Net financing costs include interest income, interest expense, and interest costs and investment gains and losses associated with benefit plans.
[2]	Primarily represents the equity earnings of Dow Corning.