Corning (GLW) 10-K 12 Feb 24 2023 FY Annual report Financial data

Document And Entity Information

Document And Entity Information - USD ($)	12 Months Ended
	Dec. 31, 2023	Jan. 31, 2024	Jun. 30, 2023
Document Information [Line Items]
Entity Central Index Key	0000024741
Entity Registrant Name	CORNING INC /NY
Amendment Flag	false
Current Fiscal Year End Date	--12-31
Document Fiscal Period Focus	FY
Document Fiscal Year Focus	2023
Document Type	10-K
Document Annual Report	true
Document Period End Date	Dec. 31, 2023
Document Transition Report	false
Entity File Number	1-3247
Entity Incorporation, State or Country Code	NY
Entity Tax Identification Number	16-0393470
Entity Address, Address Line One	One Riverfront Plaza
Entity Address, City or Town	Corning
Entity Address, State or Province	NY
Entity Address, Postal Zip Code	14831
City Area Code	607
Local Phone Number	974-9000
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
ICFR Auditor Attestation Flag	true
Document Financial Statement Error Correction [Flag]	false
Entity Shell Company	false
Entity Public Float			$ 30,000,000,000
Entity Common Stock, Shares Outstanding		853,474,317
Auditor Name	PricewaterhouseCoopers LLP
Auditor Location	New York, New York
Auditor Firm ID	238
The 4.125% Notes Due 2031 [Member]
Document Information [Line Items]
Title of 12(b) Security	4.125% Notes due 2031
Trading Symbol	GLW31
Security Exchange Name	NYSE
The 3.875% Notes Due 2026 [Member]
Document Information [Line Items]
Title of 12(b) Security	3.875% Notes due 2026
Trading Symbol	GLW26
Security Exchange Name	NYSE
Common Stock [Member]
Document Information [Line Items]
Title of 12(b) Security	Common Stock, $0.50 par value per share
Trading Symbol	GLW
Security Exchange Name	NYSE

Consolidated Statements of Inco

Consolidated Statements of Income - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Net sales		$ 12,588	$ 14,189	$ 14,082
Cost of sales		8,657	9,683	9,019
Gross margin		3,931	4,506	5,063
Operating expenses:
Selling, general and administrative expenses		1,843	1,898	1,827
Research, development and engineering expenses		1,076	1,047	995
Amortization of purchased intangibles		122	123	129
Operating income		890	1,438	2,112
Interest income		38	15	11
Interest expense		(329)	(292)	(300)
Translated earnings contract gain, net (Note 13)		161	351	354
Other income, net		56	285	249
Income before income taxes		816	1,797	2,426
Provision for income taxes (Note 6)		(168)	(411)	(491)
Net income		648	1,386	1,935
Net income attributable to non-controlling interest		(67)	(70)	(29)
Net income attributable to Corning Incorporated		$ 581	$ 1,316	$ 1,906
Earnings per common share available to common shareholders:
Basic (Note 15) (in dollars per share)		$ 0.69	$ 1.56	$ 1.3
Diluted (Note 15) (in dollars per share)		$ 0.68	$ 1.54	$ 1.28
Net income attributable to Corning Incorporated		$ 581	$ 1,316	$ 1,906
Series A convertible preferred stock dividend				(24)
Excess consideration paid for redemption of preferred stock (1)	[1],[2]			(803)
Net income available to common shareholders		$ 581	$ 1,316	$ 1,079
[1]Refer to Note 14 (Shareholders’ Equity) in the accompanying notes to the consolidated financial statements for additional information.[2]Refer to Note 14 (Shareholders’ Equity) in the notes to the consolidated financial statements for more information.

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Net income	$ 648	$ 1,386	$ 1,935
Foreign currency translation adjustments and other (Note 14)	(230)	(779)	(604)
Unamortized (losses) gains and prior service (costs) credits for postretirement benefit plans	(24)	154	178
Realized and unrealized gains (losses) on derivatives	36	(30)	(9)
Other comprehensive loss, net of tax	(218)	(655)	(435)
Comprehensive income	430	731	1,500
Comprehensive income attributable to non-controlling interest	(67)	(70)	(29)
Comprehensive income attributable to Corning Incorporated	$ 363	$ 661	$ 1,471

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Millions		Dec. 31, 2023	Dec. 31, 2022
Current assets:
Cash and cash equivalents		$ 1,779	$ 1,671
Trade accounts receivable, net of doubtful accounts - $30 and $40		1,572	1,721
Inventories (Note 4)		2,666	2,904
Other current assets (Notes 9 and 13)		1,195	1,157
Total current assets		7,212	7,453
Property, plant and equipment, net of accumulated depreciation - $14,553 and $14,147 (Note 7)	[1]	14,630	15,371
Goodwill (Note 8)		2,380	2,394
Other intangible assets, net (Note 8)		905	1,029
Deferred income taxes (Note 6)		1,153	1,073
Other assets (Notes 9 and 13)		2,220	2,179
Total Assets		28,500	29,499
Current liabilities:
Current portion of long-term debt and short-term borrowings (Note 10)		320	224
Accounts payable		1,466	1,804
Other accrued liabilities (Notes 9 and 12)		2,533	3,147
Total current liabilities		4,319	5,175
Long-term debt (Note 10)		7,206	6,687
Postretirement benefits other than pensions (Note 11)		398	407
Other liabilities (Notes 9 and 12)		4,709	4,955
Total liabilities		16,632	17,224
Commitments and contingencies (Note 12)
Shareholders’ equity (Note 14):
Common stock – Par value $0.50 per share; Shares authorized 3.8 billion; Shares issued: 1.8 billion and 1.8 billion		916	910
Additional paid-in capital – common stock		16,929	16,682
Retained earnings		16,391	16,778
Treasury stock, at cost; Shares held: 980 million and 977 million		(20,637)	(20,532)
Accumulated other comprehensive loss		(2,048)	(1,830)
Total Corning Incorporated shareholders’ equity		11,551	12,008
Non-controlling interest		317	267
Total equity		11,868	12,275
Total Liabilities and Equity		$ 28,500	$ 29,499
[1]Approximately $40 million, $48 million and $36 million of interest costs were capitalized as part of property, plant and equipment during the years ended December 31, 2023, 2022 and 2021, respectively.

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parentheticals) - USD ($) shares in Millions, $ in Millions	Dec. 31, 2023	Dec. 31, 2022
Doubtful accounts and allowances	$ 30	$ 40
Accumulated depreciation	$ 14,553	$ 14,147
Common stock, par value (in dollars per share)	$ 0.5	$ 0.5
Common stock, shares authorized (in shares)	3,800	3,800
Common stock, shares issued (in shares)	1,800	1,800
Treasury stock Shares (in shares)	980	977

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Cash Flows from Operating Activities:
Net income		$ 648	$ 1,386	$ 1,935
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation		1,247	1,329	1,352
Amortization of purchased intangibles		122	123	129
Loss on disposal of assets, net		155	189	57
Severance charges (reversals)	[1]	187	70	(13)
Severance payments		(96)	(11)	(26)
Share-based compensation expense		218	175	190
Translation gain on Japanese yen-denominated debt		(100)	(191)	(180)
Deferred tax (benefit) provision		(75)	(46)	16
Translated earnings contract gain		(161)	(351)	(354)
Unrealized translation loss on transactions		61	68	77
Tax deposit refund		99
Changes in assets and liabilities:
Trade accounts receivable		50	113	(54)
Inventories		157	(522)	(103)
Other current assets		(80)	(139)	(224)
Accounts payable and other current liabilities		(238)	349	772
Customer deposits and government incentives		(42)	110	28
Deferred income		(5)	(49)	(116)
Other, net		(142)	12	(74)
Net cash provided by operating activities		2,005	2,615	3,412
Cash Flows from Investing Activities:
Capital expenditures		(1,390)	(1,604)	(1,637)
Proceeds from sale of equipment to related party		67
Proceeds from sale of business			76	103
Investments in and proceeds from unconsolidated entities, net		(17)	(38)	84
Realized gains on translated earnings contracts and other		326	300	67
Premiums paid on hedging contracts		(9)	(75)	(48)
Other, net		23	(14)	12
Net cash used in investing activities		(1,000)	(1,355)	(1,419)
Cash Flows from Financing Activities:
Repayments of debt		(284)	(87)	(860)
Proceeds from issuance of debt		82	127	22
Proceeds from issuance of euro bonds		918
Proceeds from other financing arrangements		54
Repayment of other financing arrangements		(54)
Payment for redemption of preferred stock		(507)	(507)	(507)
Payments of employee withholding tax on stock awards		(106)	(47)	(61)
Proceeds from exercise of stock options		42	40	97
Purchases of common stock for treasury			(221)	(274)
Dividends paid		(989)	(932)	(871)
Other, net		(39)	(22)	2
Net cash used in financing activities		(883)	(1,649)	(2,452)
Effect of exchange rates on cash		(14)	(88)	(65)
Net increase (decrease) in cash and cash equivalents		108	(477)	(524)
Cash and cash equivalents at beginning of year		1,671	2,148	2,672
Cash and cash equivalents at end of year		$ 1,779	$ 1,671	$ 2,148
[1]Severance charges in the year ended December 31, 2023 include $20 million in curtailment and special termination benefit charges.

Consolidated Statements of Chan

Consolidated Statements of Changes In Shareholders' Equity - USD ($) $ in Millions		Preferred Stock [Member]	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Treasury Stock, Common [Member]	AOCI Attributable to Parent [Member]	Parent [Member]	Noncontrolling Interest [Member]	Total
Balance at Dec. 31, 2020		$ 2,300	$ 863	$ 14,642	$ 16,120	$ (19,928)	$ (740)	$ 13,257	$ 191	$ 13,448
Net income (loss)					1,906			1,906	29	1,935
Other comprehensive loss							(435)	(435)	(1)	(436)
Redemption of preferred stock	[1]	(700)			(803)			(1,503)		(1,503)
Conversion of preferred stock to common stock	[1]	(1,600)	40	1,560
Purchase of common stock for treasury						(274)		(274)		(274)
Shares issued to benefit plans and for option exercises			4	273				277		277
Common dividends					(812)			(812)		(812)
Preferred dividends					(24)			(24)		(24)
Other, net	[2]				2	(61)		(59)	(7)	(66)
Balance at Dec. 31, 2021		0	907	16,475	16,389	(20,263)	(1,175)	12,333	212	12,545
Net income (loss)					1,316			1,316	70	1,386
Other comprehensive loss							(655)	(655)	(2)	(657)
Purchase of common stock for treasury						(221)		(221)		(221)
Shares issued to benefit plans and for option exercises			3	207				210		210
Common dividends					(926)			(926)		(926)
Other, net	[2]					(48)		(49)	(13)	(62)
Balance at Dec. 31, 2022		0	910	16,682	16,778	(20,532)	(1,830)	12,008	267	12,275
Net income (loss)					581			581	67	648
Other comprehensive loss							(218)	(218)	(1)	(219)
Shares issued to benefit plans and for option exercises			6	247				253		253
Common dividends					(968)			(968)		(968)
Other, net	[2]					(105)		(105)	(16)	(121)
Balance at Dec. 31, 2023		$ 0	$ 916	$ 16,929	$ 16,391	$ (20,637)	$ (2,048)	$ 11,551	$ 317	$ 11,868
[1]Refer to Note 14 (Shareholders’ Equity) in the accompanying notes to the consolidated financial statements for additional information.[2]Treasury stock includes the deemed surrender to the Company of common stock to satisfy employee tax withholding obligations

Consolidated Statements of Ch_2

Consolidated Statements of Changes In Shareholders' Equity (Parentheticals)	12 Months Ended
	Dec. 31, 2021 $ / shares
Common Dividends (in dollars per share)	$ 0.96
Preferred Dividends (in dollars per share)	$ 10,625

Insider Trading Arrangements

Insider Trading Arrangements	12 Months Ended
	Dec. 31, 2023
Insider Trading Arr Line Items
Material Terms of Trading Arrangement [Text Block]	9B. During the three December 31, 2023, none 10b5 1 10b5 1
Rule 10b5-1 Arrangement Adopted [Flag]	false
Non-Rule 10b5-1 Arrangement Adopted [Flag]	false
Rule 10b5-1 Arrangement Terminated [Flag]	false
Non-Rule 10b5-1 Arrangement Terminated [Flag]	false

Note 1 - Summary of Significant

Note 1 - Summary of Significant Accounting Policies	12 Months Ended
	Dec. 31, 2023
Notes to Financial Statements
Significant Accounting Policies [Text Block]	1. Organization Corning Incorporated is a provider of high-performance glass for notebook computers, flat panel desktop monitors, display televisions and other information display applications; carrier network and enterprise network products for the telecommunications industry; ceramic substrates for gasoline and diesel engines in automotive and heavy-duty vehicle markets; laboratory products for the scientific community and specialized polymer products for biotechnology applications; advanced optical materials for the semiconductor industry and the scientific community; polycrystalline silicon products and other technologies. In these notes, the terms “Corning,” “Company,” “we,” “us,” or “our” mean Corning Incorporated and subsidiary companies. Basis of Presentation and Principles of Consolidation The consolidated financial statements include the consolidated accounts of Corning Incorporated and its subsidiaries that are consolidated in conformity with accounting principles generally accepted in the United States of America (“GAAP”). All intercompany accounts, transactions and profits have been eliminated. Investments in partially-owned affiliates are accounted for by the equity method when the Company exercises significant influence, which typically occurs when its ownership interest exceeds 20% not The Company consolidates variable interest entities (“VIEs”) when it has the power to direct the significant activities of the entity and the obligation to absorb losses or receive benefits from the entity that may not Certain prior year amounts have been reclassified to conform to the current year presentation. These reclassifications had no Use of Estimates The preparation of financial statements, in conformity with GAAP, requires management to make estimates and assumptions affecting reported amounts of assets, liabilities, revenue, expenses and the disclosure of contingent assets and liabilities in the consolidated financial statements and related notes. Significant estimates and assumptions in these consolidated financial statements include estimates associated with revenue recognition, restructuring charges, goodwill and long-lived asset impairment tests, estimates of fair value of acquired assets and liabilities, estimates of fair value of investments, equity interests, environmental and legal liabilities, income taxes and deferred tax valuation allowances, assumptions used in calculating pension and other postretirement employee benefit expenses and the fair value of share-based compensation. Due to the inherent uncertainty involved in making estimates, actual results reported in future periods may Revenue Recognition Most of the Company’s revenue is generated by delivery of products to customers and recognized at a point in time based on evaluation of when the customer obtains control of the products. Revenue is recognized when all performance obligations under the terms of a contract are satisfied and control of the product has been transferred to the customer. If customer acceptance clauses are present and it cannot be objectively determined that control has been transferred, revenue is only recorded when customer acceptance is received and all performance obligations have been satisfied. Sales of goods typically do not not Revenue is measured as the amount of consideration expected in exchange for transferring goods or providing services. Sales tax, value-added tax and other taxes are collected concurrently with revenue-producing activities and excluded from revenue. Incidental contract costs that are not At the time revenue is recognized, allowances are recorded with the related reduction to revenue for estimated product returns, allowances and price discounts based upon historical experience and related terms of customer arrangements. Where product warranties are offered, liabilities are established for estimated warranty costs based upon historical experience and specific warranty provisions. Warranty liabilities are adjusted when experience indicates the expected outcome will differ from initial estimates of the liability. Product warranty liabilities were not December 31, 2023 2022 In addition, the Company has contractual arrangements with certain customers, mainly related to Telecommunications products and comprised of design, installation, training and software maintenance services, in which revenue is recognized over time. The performance obligations under these contracts generally require services to be performed over time, resulting in either a straight-line amortization method or an input method using incurred and forecasted expense to predict revenue recognition patterns which follows satisfaction of the performance obligation. Corning’s other revenue was not December 31, 2023 2022 2021 Contract Assets and Liabilities Contract assets, such as incremental costs to obtain or fulfill contracts, are an insignificant component of Corning’s revenue recognition process. Most of Corning’s fulfillment costs as a manufacturer of products are classified as inventory, fixed assets and intangible assets, which are accounted for under the respective guidance for those asset types. Other fulfillment costs are immaterial due to the nature of the products and their respective manufacturing processes. Contract liabilities include customer deposits, deferred revenue and other advanced payments. Customer deposits are primarily related to Display products and deferred revenue is primarily related to Hemlock Semiconductor Group (“HSG”). Other advanced payments are not Research and Development Costs Research and development costs are charged to expense as incurred. Research and development costs totaled $0.9 billion, $0.9 billion and $0.8 billion for the years ended December 31, 2023 2022 2021 Foreign Currency Translation and Transactions The determination of the functional currency for Corning’s foreign subsidiaries is made based on the appropriate economic factors. For most foreign operations, the local currencies are generally considered to be the functional currencies. Corning’s most significant exception is a Taiwanese subsidiary, which uses the Japanese yen as its functional currency. For all transactions denominated in a currency other than a subsidiary’s functional currency, foreign currency revaluation and remeasurement gains and losses are included in income for the period in which the exchange rates changed. A net foreign currency revaluation and remeasurement gain of $59 million, $130 million and $126 million was recorded for the years ended December 31, 2023 2022 2021 Foreign subsidiary functional currency balance sheet accounts have been translated at period-end exchange rates, and statement of operations accounts have been translated using average exchange rates for the period. Translation gains and losses are recorded as a separate component of accumulated other comprehensive loss in shareholders’ equity. The effects of remeasuring non-functional currency assets and liabilities into the functional currency are included in current earnings, except for those related to intra-entity foreign currency transactions of a long-term investment nature which are recorded together with translation gains and losses in accumulated other comprehensive loss in shareholders’ equity. Upon sale or substantially complete liquidation of an investment in a foreign entity, the amount of net translation gains or losses that have been accumulated in other comprehensive loss attributable to that investment are reported as a gain or loss for the period in which the sale or liquidation occurs. Share-Based Compensation Corning maintains long-term incentive plans (the “Plans”) for employees and non-employee members of its Board of Directors. The Plans are established to grant equity-based compensation awards, including time-based restricted stock and restricted stock units, performance-based restricted stock units, stock options, stock appreciation rights or a combination of awards (collectively, “share-based awards”). Share-based compensation cost is allocated to cost of sales, selling, general and administrative expenses and research, development and engineering expenses in the consolidated statements of income. The cost of share-based compensation awards is equal to the fair value of the award at the grant date and compensation expense is recognized for awards expected to ultimately vest. The number of awards expected to vest equals the total awards granted less an estimation of the number of forfeitures expected to occur prior to vesting. The Company reassesses the probability of vesting annually and adjusts share-based compensation expense based on its probability assessment. The forfeiture assumption is ultimately adjusted to the actual forfeiture rate. The effect of any change in estimated forfeitures would be recognized through a cumulative adjustment that would be included in compensation cost in the period of the change in estimate. As a result, changes in the forfeiture assumptions do not For awards granted to non-employee members of the Company’s Board of Directors, the Company recognizes the compensation expense over the service period for awards with vesting terms and immediately for awards with no During the requisite service period, the Company also recognizes a deferred income tax benefit for the expense recognized. At the time of subsequent vesting, exercise, forfeiture, or expiration of an award, the difference between the Company’s actual income tax deduction, if any, and the previously accrued income tax benefit is recognized in current income tax expense/benefit during the current period. 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. Performance-Based Restricted Stock Units Performance-based restricted stock units are issued by the Company on a discretionary basis, earned upon the achievement of certain targets and are payable in shares of the Company’s common stock upon vesting, typically over a three Stock Options Corning’s stock option plans provide non-qualified and incentive stock options to purchase authorized but unissued common shares, or treasury shares, at the closing market price on the grant date and generally become exercisable in tranches from one five 10 no Cash and Cash Equivalents Cash equivalents consist of highly liquid investments that are readily convertible into cash. Securities with contractual maturities of three The following table presents supplemental disclosures of cash flow information (in millions): Year ended December 31, 2023 2022 2021 Non-cash transactions: Accruals for capital expenditures $ 217 $ 414 $ 357 Cash paid for interest and income taxes: Interest (1) $ 274 $ 275 $ 287 Income taxes, net of refunds received $ 213 $ 426 $ 377 ( 1 Includes approximately $40 million, $48 million and $36 million of interest costs that were capitalized as part of property, plant and equipment during the years ended December 31, 2023 2022 2021 Trade Accounts Receivable, net of Doubtful Accounts The allowance for doubtful accounts is based on the best estimate of the amount of probable lifetime credit losses in existing accounts receivable. The Company determines the allowance based on historical write-off experience and expected future default rate by industry. In addition, in circumstances where the Company is made aware of a specific customer’s inability to meet its financial obligations, a specific allowance is established. The Company does not Inventories Inventories are stated at the lower of cost or net realizable value using the first first Property, Plant and Equipment, Net of Accumulated Depreciation Land, buildings and equipment, including precious metals, are recorded at cost. Depreciation is based on the estimated useful life of the respective assets using the straight-line method. The estimated useful lives generally range from 10 to 40 years for buildings and improvements and 2 to 20 years for equipment, excluding precious metals as discussed below. Interest on borrowings is capitalized during the active construction period of major capital projects, added to the cost of the underlying assets and amortized over the useful life of the assets. Included in the subcategory of equipment are the following types of assets (excluding precious metals): Asset type Range of useful life (in years) Computer hardware and software 3 to 7 Manufacturing equipment 2 to 15 Furniture and fixtures 5 to 10 Transportation equipment 3 to 20 Manufacturing equipment includes certain components of production equipment that are constructed of precious metals. These assets are not not Leases Corning leases certain real estate, vehicles and equipment from third twelve Renewal and termination options are included in the calculation of the right-of-use assets and lease liabilities when considered to be reasonably certain to be exercised. Lease expense is recognized on a straight-line basis over the lease term for operating leases. Interest expense and amortization of the right-of-use assets relating to finance leases are calculated and recognized using the effective interest and straight-line methods, respectively. Corning does not Impairment of Long-Lived Assets The recoverability of long-lived assets, such as property, plant and equipment and intangible assets, is reviewed when events or changes in circumstances occur that indicate the carrying value of the asset or asset group may not Goodwill Goodwill reflects the purchase price of a business acquisition in excess of the fair values assigned to identifiable assets acquired and liabilities assumed. The Company's goodwill relates, and is assigned directly, to one of our six Goodwill is tested for impairment at the reporting unit level, annually, or more frequently if events or changes in circumstances indicate that it is more likely than not not not three not During the current year, the Company performed its detailed triennial quantitative impairment test as of October 1, 2023 no 3 Government Assistance The Company receives government assistance, typically in the form of cash incentives primarily for capital expansion projects and tax credits that are refundable or transferable. Incentives are recognized when it is probable that the Company will comply with any contractual conditions and that the incentives will be received. Incentives are classified as an asset when they are recognized but have not not During the year ended December 31, 2023, not December 31, 2023, December 31, 2023 not During the year ended December 31, 2022, not December 31, 2022, 1 2 December 31, 2022 not Environmental Liabilities The Company accrues for its environmental investigation, remediation, operating and maintenance costs when it is probable that a liability has been incurred and the amount can be reasonably estimated. For environmental matters, the most likely cost to be incurred is accrued based on an evaluation of currently available facts with respect to each individual site, current laws and regulations and prior remediation experience. For sites with multiple potentially responsible parties, the Company considers its likely proportionate share of the anticipated remediation costs and the ability of the other parties to fulfill obligations in establishing a provision for those costs. Where no The uncertain nature inherent in such remediation and the possibility that initial estimates may not Equity Method Investments As of December 31, 2023 2022 December 31, 2023 2022 2021 Equity method investments are reviewed for impairment on a periodic basis, or if an event occurs or circumstances change that indicate the carrying amount may All equity investments that do not not not not December 31, 2023 2022 Employee Retirement Plans Corning offers employee retirement plans consisting of defined benefit pension plans covering certain domestic and international employees and postretirement plans that provide health care and life insurance benefits for eligible retirees and dependents. The costs and obligations related to these benefits reflect the Company’s assumptions related to general economic conditions, particularly interest rates, expected return on plan assets, rate of compensation increase for employees and health care cost trend rates. The cost of providing plan benefits depends on demographic assumptions including retirements, mortality, turnover and plan participation. Costs for defined benefit pension plans consist of two 1 2 10% fourth Costs for postretirement benefit plans consist of on-going costs recognized quarterly, and are comprised of service and interest costs, amortization of prior service costs and amortization of actuarial gains and losses. Actuarial gains and losses resulting from changes in actuarial assumptions are recognized as a component of accumulated other comprehensive loss in shareholders’ equity on an annual basis and amortized into operating results over the average remaining service period of employees expected to receive benefits under the plans, to the extent such gains and losses are outside the corridor. Income Taxes The Company accounts for income taxes using the asset and liability method. Under this method, deferred tax assets and liabilities are recognized for the future tax consequences attributable to operating loss and tax credit carryforwards and for differences between the carrying amounts of existing assets and liabilities and their respective tax bases. Valuation allowances are established when management is unable to conclude that it is more likely than not The effective tax rate reflects the assessment of the ultimate outcome of tax audits. In evaluating the tax benefits associated with the Company’s various tax filing positions, a tax benefit for uncertain tax positions is recorded using the highest cumulative tax benefit that is more likely than not Discrete events such as audit settlements or changes in tax laws are recognized in the period in which they occur. Generally, Corning will indefinitely reinvest the foreign earnings of: ( 1 2 3 4 5 Fair Value Measurements Major categories of financial assets and liabilities, including short-term investments, other assets and derivatives, are measured at fair value on a recurring basis. Certain assets and liabilities are measured at fair value on a nonrecurring basis when impaired, which include long-lived assets, goodwill, equity method investments, other investments and asset retirement obligations. Non-financial assets and liabilities or financial assets and liabilities other than derivatives measured at fair value either on a recurring or nonrecurring basis were not December 31, 2023 2022 Fair value is the price that would be received from selling an asset, or paid to transfer a liability, in an orderly transaction between market participants at the measurement date. When determining the fair value measurements for assets and liabilities required to be recorded at fair value, the principal, or most advantageous, market in which Corning would transact is analyzed. Assumptions that market participants would use when pricing the asset or liability, such as inherent risk, transfer restrictions and risk of non-performance, are considered. A three one three 1, 2, 3, Derivative Instruments The Company enters into a variety of foreign exchange forward contracts and foreign exchange option contracts to manage the exposure to fluctuations in foreign exchange rates. Financial exposure is managed in accordance with corporate policies and procedures. The Company also utilizes derivatives that are bifurcated from its precious metals lease contracts to manage the exposure of its separate accounting pool of leased precious metals to changes in market prices. The most significant foreign currency exposures relate to the Japanese yen, South Korean won, New Taiwan dollar, Chinese yuan and the euro. Corning seeks to mitigate the impact of exchange rate movements in the income statement by using over-the-counter (“OTC”) derivative instruments including foreign exchange forward and option contracts. In general, the expirations of these contracts coincide with the timing of the underlying foreign currency commitments and transactions. Corning is exposed to potential losses in the event of non-performance by counterparties to these derivative contracts. However, this risk is minimized by maintaining a portfolio with a diverse group of highly-rated major financial institutions. The Company does not All derivatives are recorded at fair value on the consolidated balance sheets. The fair values of these derivative contracts are recorded as either assets (gain position) or liabilities (loss position) on the consolidated balance sheets. Changes in the fair value of derivatives designated as cash flow hedges are not not Designated Hedges Corning uses OTC foreign exchange forward contracts designated as cash flow hedges, with maturities through 2024, December 31, 2023 12 $58 Corning has entered into leases of precious metals, with maturities through 2025. not Corning uses regression analysis or the critical term match method to assess initial hedge effectiveness. Following the inception of a hedging relationship, hedge effectiveness is assessed quarterly based on qualitative factors. Net Investment Hedges From time to time, Corning utilizes derivative and non-derivative net investment hedges to offset risk against investments in foreign subsidiaries with non-USD functional currencies. Changes in the value of these hedging instruments due to foreign currency gains or losses are deferred in other comprehensive loss on the consolidated statements of comprehensive income, within the foreign currency translation adjustments and other line, and will remain in accumulated other comprehensive loss until the hedged investment is sold or substantially liquidated. We evaluate the effectiveness of the net investment hedges each quarter using the critical terms match method. Undesignated Hedges Corning uses OTC foreign exchange forward and option contracts not A significant portion of the Company’s non-U.S. revenue and expenses are denominated in Japanese yen, South Korean won, New Taiwan dollar, Chinese yuan and euro. When this revenue and these expenses are translated back to U.S. dollars, the Company is exposed to foreign exchange rate movements. To protect translated earnings against movements in these currencies, the Company has entered into a series of average rate forwards and option contracts. Most of these contracts hedge a significant portion of the Company’s exposure to the Chinese yuan, Japanese yen and South Korean won. The Company has contracts through 2025 2026 New Accounting Standards In November 2023, 2023 07 280 2023 07” 2023 07 2023 07 December 15, 2023 December 15, 2024. 2023 07 In December 2023, 2023 09 740 2023 09” 2023 09 2023 09 December 15, 2024. may 2023 09

Note 2 - Restructuring, Impairm

Note 2 - Restructuring, Impairment and Other Charges and Credits	12 Months Ended
	Dec. 31, 2023
Notes to Financial Statements
Restructuring and Related Activities Disclosure [Text Block]	2. Corning periodically assesses the operating efficiency and cost structure of the Company’s asset base and global workforce and takes appropriate actions to align corporate resources with the business environment. The following table presents the restructuring, impairment and other charges and credits (in millions): Year ended December 31, 2023 2022 2021 Severance (1) $ 187 $ 70 $ (13 ) Capacity optimization 176 219 46 Other charges and credits (2) 108 125 77 Total restructuring, impairment and other charges and credits $ 471 $ 414 $ 110 ( 1 Severance charges in the year ended December 31, 2023 ( 2 Other charges and credits primarily includes disposal costs and inventory write-downs. During the year ended December 31, 2023, December 31, 2023, twelve During the year ended December 31, 2022, December 31, 2022, 2. The following tables present the impact and respective location of total restructuring, impairment and other charges and credits in the consolidated statements of income (in millions): Year ended December 31, 2023 Selling, Research, general development and and Gross administrative engineering margin (1) expenses expenses Other Total Severance $ 65 $ 69 $ 33 $ 20 $ 187 Capacity optimization 121 21 13 21 176 Other charges and credits 97 1 10 108 Total restructuring, impairment and other charges and credits $ 283 $ 91 $ 46 $ 51 $ 471 Year ended December 31, 2022 Selling, Research, general development and and Gross administrative engineering margin (1) expenses expenses Other Total Severance $ 25 $ 32 $ 13 $ 70 Capacity optimization 215 4 219 Other charges and credits 97 15 3 $ 10 125 Total restructuring, impairment and other charges and credits $ 337 $ 51 $ 16 $ 10 $ 414 Year ended December 31, 2021 Selling, Research, general development and and Gross administrative engineering margin (1) expenses expenses Other Total Severance $ (6 ) $ (5 ) $ (2 ) $ (13 ) Capacity optimization 36 7 3 46 Other charges and credits 50 (5 ) $ 32 77 Total restructuring, impairment and other charges and credits $ 80 $ (3 ) $ 1 $ 32 $ 110 ( 1 Activity reflected in cost of sales.

Note 3 - Revenue

Note 3 - Revenue	12 Months Ended
	Dec. 31, 2023
Notes to Financial Statements
Revenue from Contract with Customer [Text Block]	3. Disaggregated Revenue The following table shows revenue by major product category, similar to the Company’s reportable segment disclosure. Within each product category, contract terms, conditions and economic factors affecting the nature, amount, timing and uncertainty around revenue recognition and cash flows are substantially similar. The commercial markets and selling channels are also similar. Except for an insignificant number of Telecommunications products, product category revenues are recognized at the point in time when control transfers to the customer. The following table presents revenues by product category (in millions): Year ended December 31, 2023 2022 2021 Telecommunication products $ 4,012 $ 5,023 $ 4,349 Display products 2,694 2,829 3,666 Specialty glass products 1,854 1,996 2,008 Environmental substrate and filter products 1,660 1,492 1,584 Life science products 922 1,187 1,232 Polycrystalline silicon products 1,014 1,191 892 All other products 432 471 351 Total Revenue $ 12,588 $ 14,189 $ 14,082 Customer Deposits As of December 31, 2023 2022 For the years ended December 31, 2023 2022 Refer to Note 9 Deferred Revenue As of December 31, 2023 2022 Deferred revenue is tracked on a per-customer contract-unit basis. As customers take delivery of the committed volumes under the terms of the contract, a per-unit amount of deferred revenue is recognized when control of the promised goods is transferred to the customer based upon the units delivered compared to the remaining contractual units. During the years ended December 31, 2023, 2022 2021, not Refer to Note 9

Note 4 - Inventories

Note 4 - Inventories	12 Months Ended
	Dec. 31, 2023
Notes to Financial Statements
Inventory Disclosure [Text Block]	4. Inventories consisted of the following (in millions): December 31, 2023 2022 Finished goods $ 1,242 $ 1,315 Work in process 551 571 Raw materials and accessories 445 537 Supplies and packing materials 428 481 Inventories $ 2,666 $ 2,904

Note 5 - Leases

Note 5 - Leases	12 Months Ended
	Dec. 31, 2023
Notes to Financial Statements
Lessee, Operating And Finance Leases [Text Block]	5. The following table presents the components of lease cost (in millions) ( 1 Year ended December 31, 2023 2022 2021 Operating lease cost $ 171 $ 147 $ 139 Variable lease cost 57 51 59 Short-term lease cost 2 2 2 Total lease cost $ 230 $ 200 $ 200 ( 1 Finance lease costs were not December 31, 2023 2022 2021 The following table presents the components of cash paid for amounts included in the measurement of lease liabilities (in millions) ( 1 December 31, 2023 2022 2021 Operating cash outflows from operating leases $ 153 $ 116 $ 134 ( 1 Cash payments for operating leases have been classified as operating activities on the consolidated statements of cash flows. Principal and interest payments for finance leases have been classified as financing activities and operating activities, respectively, on the consolidated statements of cash flows, and were not December 31, 2023 2022 2021 The following table presents supplemental consolidated balance sheet information (in millions, except lease term and discount rate) ( 1 December 31, Location of lease balances 2023 2022 Operating lease right-of-use assets Other assets $ 883 $ 842 Operating lease liabilities - current Other current liabilities $ 112 $ 111 Operating lease liabilities - noncurrent Other liabilities $ 846 $ 795 Weighted-average remaining lease term (in years) 13.6 14.3 Weighted-average discount rate 4.4 % 4.2 % ( 1 Finance leases were not December 31, 2023 2022 5. As of December 31, 2023 ( 1 December 31, 2023 2024 $ 140 2025 $ 116 2026 $ 104 2027 $ 89 2028 $ 80 After 2028 $ 782 Total operating payments $ 1,311 Less: imputed discount $ 353 Present value of lease payments $ 958 ( 1 Finance leases were not December 31, 2023 As of December 31, 2023 not 2025

Note 6 - Income Taxes

Note 6 - Income Taxes	12 Months Ended
	Dec. 31, 2023
Notes to Financial Statements
Income Tax Disclosure [Text Block]	6. The following table presents the components of income before income taxes (in millions): Year ended December 31, 2023 2022 2021 U.S. companies $ 105 $ 1,157 $ 1,282 Non-U.S. companies 711 640 1,144 Income before income taxes $ 816 $ 1,797 $ 2,426 The following table presents the current and deferred amounts of the provision for income taxes (in millions): Year ended December 31, 2023 2022 2021 Current: Federal $ (82 ) $ (191 ) $ (172 ) State and municipal (13 ) (16 ) (13 ) Foreign (148 ) (250 ) (290 ) Deferred: Federal 76 52 (97 ) State and municipal 7 8 (7 ) Foreign (8 ) (14 ) 88 Provision for income taxes $ (168 ) $ (411 ) $ (491 ) Amounts reflected in the preceding tables are based on the location of the taxing authorities. 6. The following table presents the reconciliation of the statutory U.S. federal income tax rate to the effective tax rate: Year ended December 31, 2023 2022 2021 Statutory U.S. federal income tax rate 21.0 % 21.0 % 21.0 % State income tax (benefit) provision, net of federal effect (0.3 ) 0.7 1.0 Tax credits (6.9 ) (3.3 ) (2.6 ) Non-Taxable Items (4.0 ) Foreign derived intangible income (2.3 ) (2.7 ) (1.3 ) Stock compensation (2.1 ) (0.8 ) (1.5 ) Remeasurement of deferred tax assets and liabilities (0.3 ) (0.1 ) Differential arising from foreign earnings (1) 0.3 2.2 2.0 Non-deductible Items 4.7 1.4 Audit settlements & change in reserve 4.8 3.7 1.6 Valuation allowance 5.7 2.1 (0.5 ) Intercompany loan adjustment 0.6 Global intangible low-taxed income 0.2 Other items, net (0.5 ) (1.1 ) Effective tax rate 20.6 % 22.9 % 20.2 % ( 1 Includes impact of intercompany asset sales. During the year ended December 31, 2023 December 31, 2023 The following table presents the tax effects of temporary differences and carryforwards that gave rise to significant portions of the deferred tax assets and liabilities (in millions): December 31, 2023 2022 Loss and tax credit carryforwards $ 275 $ 281 Other assets 245 232 Research and development capitalization 362 280 Asset impairments and restructuring reserves 43 41 Postretirement medical and life benefits 103 102 Other accrued liabilities 319 311 Other employee benefits 344 346 Gross deferred tax assets 1,691 1,593 Valuation allowances (207 ) (166 ) Total deferred tax assets 1,484 1,427 Intangible and other assets (117 ) (108 ) Fixed assets (223 ) (289 ) Finance leases (209 ) (200 ) Total deferred tax liabilities (549 ) (597 ) Net deferred tax assets $ 935 $ 830 ( 1 The Company also has Luxembourg deferred tax asset net operating losses of up to $3.1 billion that have a remote possibility of realization and therefore, are not 6. Net deferred tax assets on the consolidated balance sheets consisted of the following (in millions): December 31, 2023 2022 Deferred tax assets $ 1,153 $ 1,073 Other liabilities (218 ) (243 ) Net deferred tax assets $ 935 $ 830 The following table presents details of the deferred tax assets for loss and tax credit carryforwards (in millions): Expiration Total 2024-2028 2029-2033 2034-2038 Indefinite Net operating losses $ 274 $ 63 $ 38 $ 33 $ 140 Tax credits 1 1 Balance as of December 31, 2023 $ 275 $ 63 $ 39 $ 33 $ 140 The following table presents the changes in the deferred tax valuation allowance (in millions): 2023 2022 2021 Balance as of January 1 $ 166 $ 138 $ 167 Additions 66 81 13 Reductions (25 ) (53 ) (42 ) Balance as of December 31 $ 207 $ 166 $ 138 The following table presents the reconciliation of the beginning and ending amount of unrecognized tax benefits (in millions): 2023 2022 2021 Balance as of January 1 $ 206 $ 178 $ 131 Additions based on tax positions related to the current year 54 10 54 Additions for tax positions of prior years 127 24 17 Reductions for tax positions of prior years (3 ) (5 ) (21 ) Settlements and lapse of statute of limitations (11 ) (1 ) (3 ) Balance as of December 31 $ 373 $ 206 $ 178 During 2020, 2015 2018. 2023, 2019 2020. not The additions for tax positions of prior years were primarily due to tax audits, development of tax court cases and tax law changes in various jurisdictions. Included in the balance as of December 31, 2023, 2022 2021 Interest and penalties associated with uncertain tax positions are recognized as part of tax expense. For the years ended December 31, 2023, 2022 2021 not 6. It is possible that the amount of unrecognized tax benefits will change due to one twelve December 31, 2023 not twelve Corning Incorporated, as the common parent company, and all 80% December 31, 2013. December 31, 2014, Corning Incorporated and its U.S. subsidiaries file income tax returns on a combined, unitary or stand-alone basis in multiple state and local jurisdictions, which generally have statutes of limitations ranging from 3 5 not Corning’s foreign subsidiaries file income tax returns in the countries where their operations are located. Generally, these countries have statutes of limitations ranging from 3 10 2014 2016 2018 2014 Corning Precision Materials, a South Korean subsidiary, is currently appealing certain tax assessments and tax refund claims for tax years 2010 2019. 2023, no December 31, 2023 December 31, 2022 not

Note 7 - Property, Plant and Eq

Note 7 - Property, Plant and Equipment, Net of Accumulated Depreciation	12 Months Ended
	Dec. 31, 2023
Notes to Financial Statements
Property, Plant and Equipment Disclosure [Text Block]	7. Property, plant and equipment, net of accumulated depreciation consisted of the following (in millions): December 31, 2023 2022 Land $ 412 $ 420 Buildings 5,931 5,963 Equipment (1) 20,896 20,800 Construction in progress 1,944 2,335 Subtotal 29,183 29,518 Accumulated depreciation (14,553 ) (14,147 ) Property, plant and equipment, net of accumulated depreciation (2) $ 14,630 $ 15,371 ( 1 Manufacturing equipment includes certain components of production equipment that are constructed of precious metals. As of December 31, 2023 2022 December 31, 2023, 2022 2021 ( 2 Approximately $40 million, $48 million and $36 million of interest costs were capitalized as part of property, plant and equipment during the years ended December 31, 2023, 2022 2021

Note 8 - Goodwill and Other Int

Note 8 - Goodwill and Other Intangible Assets	12 Months Ended
	Dec. 31, 2023
Notes to Financial Statements
Goodwill and Intangible Assets Disclosure [Text Block]	8. The following table presents the changes in the carrying amount of goodwill (in millions): Optical Communications Display Technologies Specialty Materials Life Sciences Hemlock and Emerging Growth Businesses Total Balance as of December 31, 2021 $ 915 $ 125 $ 150 $ 616 $ 615 $ 2,421 Acquired goodwill 4 1 5 Foreign currency translation adjustment and other (14 ) (4 ) (10 ) (4 ) (32 ) Balance as of December 31, 2022 $ 905 $ 121 $ 151 $ 606 $ 611 $ 2,394 Foreign currency translation adjustment and other (1 ) (2 ) 1 (12 ) (14 ) Balance as of December 31, 2023 $ 904 $ 119 $ 151 $ 607 $ 599 $ 2,380 Corning’s gross goodwill balance and accumulated impairment losses were $8.9 billion and $6.5 billion, respectively, as of December 31, 2023 2022 Management completed its fiscal 2023 October 1, 2023. 2023, no Other Intangible Assets, Net Other intangible assets, net consisted of the following (in millions): December 31, 2023 2022 Gross Accumulated amortization Net Gross Accumulated amortization Net Amortized intangible assets: Patents, trademarks & trade names $ 493 $ 318 $ 175 $ 496 $ 300 $ 196 Customer lists and other (1) 1,464 734 730 1,461 628 833 Other intangible assets, net $ 1,957 $ 1,052 $ 905 $ 1,957 $ 928 $ 1,029 ( 1 Other consists of intangible assets related to developed technologies and intellectual know-how. Corning’s amortized intangible assets are primarily related to Optical Communications, Life Sciences and certain businesses within Hemlock and Emerging Growth Businesses. The net carrying amount of intangible assets decreased during the year, primarily driven by amortization of $122 million. Annual amortization expense is expected to be approximately $126 million, $119 million, $98 million, $94 million and $88 million for years 2024 2028,

Note 9 - Other Assets and Other

Note 9 - Other Assets and Other Liabilities	12 Months Ended
	Dec. 31, 2023
Notes to Financial Statements
Other Assets and Other Liabilities Disclosure [Text Block]	9. Other assets consisted of the following (in millions): December 31, 2023 2022 Current assets: Derivative instruments (Note 13) $ 501 $ 454 Other current assets 694 703 Other current assets $ 1,195 $ 1,157 Non-current assets: Derivative instruments (Note 13) $ 130 $ 224 South Korean tax deposits (Note 6) 261 349 Operating leases (Note 5) 883 842 Investments 414 360 Other non-current assets 532 404 Other assets $ 2,220 $ 2,179 Other liabilities consisted of the following (in millions): December 31, 2023 2022 Current liabilities: Wages and employee benefits $ 609 $ 727 Income taxes (Note 6) 69 127 Derivative instruments (Note 13) 66 174 Deferred revenue (Note 3) 181 144 Customer deposits (Note 3) 148 132 Share repurchase liability (Note 14) 506 Short-term operating leases (Note 5) 112 111 Other current liabilities 1,348 1,226 Other accrued liabilities $ 2,533 $ 3,147 Non-current liabilities: Defined benefit pension plan liabilities (Note 11) $ 721 $ 668 Derivative instruments (Note 13) 31 17 Deferred revenue (Note 3) 679 725 Customer deposits (Note 3) 1,083 1,137 Deferred tax liabilities (Note 6) 218 243 Long-term operating leases (Note 5) 846 795 Other non-current liabilities 1,131 1,370 Other liabilities $ 4,709 $ 4,955

Note 10 - Debt

Note 10 - Debt	12 Months Ended
	Dec. 31, 2023
Notes to Financial Statements
Debt Disclosure [Text Block]	10. Debt consisted of the following (in millions): December 31, 2023 2022 Long-term debt Medium-term notes, average rate 0.70 $ 149 $ 45 Debentures, 6.85 157 159 Debentures, callable, 7.25 249 249 Debentures, 4.70 296 296 Debentures, 5.75 396 396 Debentures, 4.75 497 496 Debentures, 5.35 545 544 Debentures, 3.90 395 395 Debentures, 4.375 743 743 Debentures, 5.85 297 297 Debentures, 5.45 1,086 1,086 Yen-denominated debentures, 0.698 160 Yen-denominated debentures, 0.722 71 76 Yen-denominated debentures, 0.992 263 358 Yen-denominated debentures, 1.043 181 232 Yen-denominated debentures, 1.219 177 190 Yen-denominated debentures, 1.153 221 237 Yen-denominated debentures, 1.583 71 76 Yen-denominated debentures, 1.513 41 45 Euro-denominated notes, 3.875 330 Euro-denominated notes, 4.125 602 Financing Leases, average discount rate 4.6 195 190 Other, average rate 3.85 564 641 Total long-term debt, including current portion 7,526 6,911 Less current portion of long-term debt 320 224 Long-term debt $ 7,206 $ 6,687 Based on borrowing rates currently available to us for loans with similar terms and maturities, the fair value of long-term debt was $7.0 billion and $6.1 billion as of December 31, 2023 2022 December 31, 2023 2022 2 Corning did not December 31, 2023 2022 During 2022, 2027. December 31, 2023 2022 2025. fourth 2023, 10. Corning is the obligor to Chinese yuan-denominated unsecured variable rate loan facilities, whose proceeds are used for capital investment and general corporate purposes. As of December 31, 2023 2022 2024 2032. December 31, 2023 The following table presents debt maturities by year as of December 31, 2023 ( 1 2024 2025 2026 2027 2028 Thereafter $ 320 $ 188 $ 397 $ 312 $ 210 $ 6,203 ( 1 Excludes impact of an interest rate swap, bond discounts and deferred expenses. Debt Issuances and Redemptions In the fourth 2023, ¥14.7 ¥9.8 0.992% 2027 ¥4.9 1.043% 2028. On May 15, 2023, €300 3.875% 2026 “2026 €550 4.125% 2031 “2031 2026 2031 December 31, 2023 The full amounts of the 2026 2031 13 December 31, 2021, 2022 2023,

Note 11 - Employee Retirement P

Note 11 - Employee Retirement Plans	12 Months Ended
	Dec. 31, 2023
Notes to Financial Statements
Retirement Benefits [Text Block]	11. Defined Benefit Plans Corning has defined benefit pension plans covering certain domestic and international employees. The Company may December 31, 2023 not December 31, 2022 not 2024 Corning offers postretirement plans that provide health care and life insurance benefits for retirees and eligible dependents. Certain employees may 2023 2022 no 2005 65 2008 65 2010. January 1, 2007 11. Obligations and Funded Status The following table presents the change in benefit obligation and the funded status of the defined benefit pension and post-retirement benefit plans (in millions): Domestic pension benefits International pension benefits Postretirement benefits 2023 2022 2023 2022 2023 2022 Change in benefit obligation Benefit obligation at beginning of year $ 3,182 $ 4,075 $ 549 $ 736 $ 434 $ 654 Service cost 80 105 18 22 5 9 Interest cost 168 98 20 11 23 15 Plan participants’ contributions 9 7 Plan amendments 28 Actuarial gain 89 (925 ) 9 (137 ) (7 ) (209 ) Other (1) 14 3 (3 ) (1 ) 1 Benefits paid (222 ) (202 ) (25 ) (21 ) (40 ) (42 ) Foreign currency translation 10 (61 ) Benefit obligation at end of year $ 3,311 $ 3,182 $ 578 $ 549 $ 425 $ 434 Change in plan assets Fair value of plan assets at beginning of year $ 2,683 $ 3,598 $ 381 $ 584 $ 5 $ 9 Actual gain (loss) on plan assets 281 (728 ) 10 (139 ) Employer contributions 18 15 32 8 26 31 Plan participants’ contributions 9 7 Benefits paid (222 ) (202 ) (25 ) (21 ) (40 ) (42 ) Foreign currency translation 7 (51 ) Fair value of plan assets at end of year $ 2,760 $ 2,683 $ 405 $ 381 $ — $ 5 Funded status at end of year Fair value of plan assets $ 2,760 $ 2,683 $ 405 $ 381 $ — $ 5 Benefit obligations (3,311 ) (3,182 ) (578 ) (549 ) (425 ) (434 ) Funded status of plans $ (551 ) $ (499 ) $ (173 ) $ (168 ) $ (425 ) $ (429 ) Amounts recognized in the consolidated balance sheets consist of: Noncurrent asset $ 24 $ 26 Current liability $ (17 ) $ (18 ) (8 ) (7 ) $ (27 ) $ (22 ) Noncurrent liability (534 ) (481 ) (189 ) (187 ) (398 ) (407 ) Recognized liability $ (551 ) $ (499 ) $ (173 ) $ (168 ) $ (425 ) $ (429 ) Amounts recognized in accumulated other comprehensive loss consist of: Net actuarial loss (gain) $ 259 $ 259 $ 10 $ (2 ) $ (212 ) $ (226 ) Prior service cost (credit) 34 44 (1 ) (10 ) (15 ) Amounts recognized at end of year $ 293 $ 303 $ 10 $ (3 ) $ (222 ) $ (241 ) ( 1 Other consists of domestic plan special termination benefits charge and curtailment and international plan settlements. Refer to Note 2 11. Across total pension benefits, an actuarial loss of $0.1 billion was recognized in 2023 2022, December 31, 2023 2022 For the years ended December 31, 2023 2022 December 31, 2023 2022 The following table presents information for pension plans where the projected benefit obligation or the accumulated benefit obligation exceeded the fair value of plan assets (in millions): December 31, 2023 2022 Projected benefit obligation $ 3,540 $ 3,406 Fair value of plan assets $ 2,791 $ 2,712 Accumulated benefit obligation $ 3,376 $ 3,238 Fair value of plan assets $ 2,791 $ 2,712 The following table presents the components of net periodic benefit expense (income) for employee retirement plans, which other than the service cost component is recorded in other income, net in the consolidated statements of income (in millions): Domestic pension benefits International pension benefits Postretirement benefits 2023 2022 2021 2023 2022 2021 2023 2022 2021 Service cost $ 80 $ 105 $ 102 $ 18 $ 22 $ 25 $ 5 $ 9 $ 10 Interest cost 168 98 78 20 11 10 23 15 15 Expected return on plan assets (176 ) (210 ) (209 ) (13 ) (9 ) (7 ) Amortization of prior service cost (credit) 6 6 4 (1 ) (1 ) (5 ) (5 ) (6 ) Amortization of actuarial (gain) loss (22 ) (5 ) 2 Recognition of actuarial (gain) loss (16 ) 29 10 1 8 1 Total net periodic benefit expense (income) $ 62 $ 28 $ (15 ) $ 26 $ 31 $ 28 $ 1 $ 14 $ 21 Settlement charge $ 2 Curtailment charge $ 3 Special termination benefit charge 15 $ 2 $ 1 Total expense (income) $ 80 $ 30 $ (15 ) $ 26 $ 33 $ 28 $ 2 $ 14 $ 21 Other changes in plan assets and benefit Curtailment effects $ (4 ) Settlements $ 11 Current year actuarial (loss) gain (16 ) $ 16 $ (105 ) $ 14 (27 ) $ (7 ) $ 5 $ (209 ) $ (105 ) Amortization of actuarial gain (loss) 22 5 (2 ) Recognition of actuarial gain (loss) 16 (29 ) (10 ) 1 20 (1 ) Current year prior service cost 28 Amortization of prior service (cost) credit (6 ) (6 ) (4 ) 1 1 (8 ) 5 6 Total recognized in other comprehensive (loss) income $ (10 ) $ 9 $ (119 ) $ 15 $ 5 $ (7 ) $ 19 $ (199 ) $ (101 ) 11. Corning uses a hypothetical yield curve and associated spot rate curve to discount the plan’s projected benefit payments. Once the present value of projected benefit payments is calculated, the suggested discount rate is equal to the level rate that results in the same present value. The yield curve is based on actual high-quality corporate bonds across the full maturity spectrum, which also includes private placements and eurobonds that are denominated in U.S. currency. The curve is developed from yields on hundreds of bonds from four Mortality is one As of December 31, 2021, 2012 2012 no 2022 2023. 2020 2012 2020 December 31, 2020, no 2022 2023. Measurement of postretirement benefit expense is based on assumptions used to value the postretirement benefit obligation at the beginning of the year. The following table presents the weighted-average assumptions used to determine benefit obligations: Pension benefits Domestic International Postretirement benefits 2023 2022 2021 2023 2022 2021 2023 2022 2021 Discount rate 5.16 % 5.50 % 2.87 % 2.30 % 2.46 % 1.20 % 5.24 % 5.58 % 2.99 % Rate of compensation increase 3.97 % 3.48 % 3.50 % 3.74 % 3.73 % 3.63 % Cash balance crediting rate 4.22 % 4.14 % 3.86 % 0.82 % 0.82 % 0.91 % Employee contributions crediting rate 5.25 % 4.62 % 1.57 % The following table presents the weighted-average assumptions used to determine net periodic benefit expense (income): Pension benefits Domestic International Postretirement benefits 2023 2022 2021 2023 2022 2021 2023 2022 2021 Discount rate 5.50 % 2.88 % 2.50 % 2.46 % 1.20 % 1.02 % 5.58 % 2.99 % 2.69 % Expected return on plan assets 6.75 % 6.00 % 6.00 % 3.85 % 1.64 % 1.26 % Rate of compensation increase 3.87 % 3.50 % 4.16 % 3.73 % 3.63 % 3.55 % Cash balance crediting rate 3.86 % 3.86 % 3.84 % 0.82 % 0.91 % 0.94 % Employee contributions crediting rate 4.62 % 1.57 % 0.62 % The following table presents the assumed health care trend rates: Assumed health care trend rates as of December 31 2023 2022 Health care cost trend rate assumed for next year (pre-65 / post-65 retirees) 6.75% / 14.75% 7.00% / 4.25% Ultimate health care trend rate 5 % 5 % Year that the rate reaches the ultimate trend rate 2031 2031 11. Plan Assets The Company’s primary objective is to ensure the plan has sufficient return on assets to fund the plan’s current and future obligations as they become due. Investments are primarily made in public securities to ensure adequate liquidity to support benefit payments. Domestic and international stocks provide diversification to the portfolio. The target allocation range equity investment is 50% which includes large, mid and small-cap companies and investments in both developed and emerging markets. The target allocation for bond investments is 50%, which predominately includes corporate bonds. Long-duration fixed income assets are utilized to mitigate the sensitivity of funding ratios to changes in interest rates. The following table presents the fair values of domestic defined benefit and post-retirement benefit plan assets, by asset category (in millions): December 31, 2023 December 31, 2022 Total Level 1 Level 2 Level 3 Total Level 1 Level 2 Level 3 Equity securities: U.S. companies $ 1,260 $ 9 $ 1,251 $ 1,168 $ 63 $ 1,105 International companies Fixed income: U.S. treasury bonds 204 204 400 400 U.S. corporate bonds 946 946 1,060 1,060 Preferred securities 1 1 1 1 Private equity (1) 24 $ 24 Real estate (2) 3 $ 3 7 7 Cash equivalents 346 339 7 28 28 Total $ 2,760 $ 552 $ 2,205 $ 3 $ 2,688 $ 491 $ 2,166 $ 31 ( 1 This category includes venture capital, leverage buyouts and distressed debt limited partnerships invested primarily in U.S. companies. The inputs are valued by discounted cash flow analysis and comparable sale analysis. ( 2 This category includes industrial, office, apartments, hotels, infrastructure and retail investments which are limited partnerships predominately in the U.S. The inputs are valued by discounted cash flow analysis; comparable sale analysis and periodic external appraisals. The following table presents the fair values of international defined benefit plan assets, by asset category (in millions): December 31, 2023 December 31, 2022 Total Level 1 Level 2 Level 3 Total Level 1 Level 2 Level 3 Fixed income: International fixed income $ 96 $ 96 $ 87 $ 87 Insurance contracts 195 $ 195 192 $ 192 Mortgages 43 43 42 42 Cash equivalents 59 59 48 48 Other 12 12 12 1 11 Total $ 405 $ 155 $ - $ 250 $ 381 $ 136 $ - $ 245 11. The following table presents the changes in the fair value of the defined benefit plans’ Level 3 Domestic International Private equity Real estate Mortgages Insurance contracts Other Balance as of December 31, 2021 $ 41 $ 10 $ 22 $ 2 Actual return on plan assets relating to assets still held at the reporting date (8 ) 1 Actual return on plan assets relating to assets sold during the reporting period 1 Asset (sales) purchases (9 ) (3 ) 18 190 $ 11 Balance as of December 31, 2022 $ 24 $ 7 $ 42 $ 192 $ 11 Actual return on plan assets relating to assets still held at the reporting date (12 ) 1 Actual return on plan assets relating to assets sold during the reporting period Asset (sales) purchases (12 ) (4 ) 3 1 Balance as of December 31, 2023 $ — $ 3 $ 43 $ 195 $ 12 Credit Risk 42% of domestic plan assets are invested in bonds with an average credit rating of AA-. These bonds are subject to both credit and default risk and changes in the risk could lead to a decline in the value of these bonds. Liquidity Risk Less than 1% of the domestic securities are invested in Level 3 may not As of December 31, 2023 2022 not Cash Flow Data The following table presents the gross benefit payments expected to be paid for domestic and international defined benefit pension plans and the postretirement medical and life plans (in millions): Expected benefit payments Domestic pension benefits International pension benefits Postretirement benefits 2024 $ 260 $ 30 $ 28 2025 $ 257 $ 38 $ 28 2026 $ 260 $ 39 $ 29 2027 $ 267 $ 39 $ 29 2028 $ 267 $ 44 $ 29 2029-2033 $ 1,401 $ 237 $ 148 Other Benefit Plans Corning offers defined contribution plans covering employees meeting certain eligibility requirements. Total consolidated defined contribution plan expense was $118 million, $117 million and $98 million for the years ended December 31, 2023, 2022 2021

Note 12 - Commitments, Continge

Note 12 - Commitments, Contingencies and Guarantees	12 Months Ended
	Dec. 31, 2023
Notes to Financial Statements
Commitments and Contingencies Disclosure [Text Block]	12. Guarantees The Company is 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 business, the Company does not third third none Purchase Commitments Purchase obligations are enforceable and legally binding obligations. The Company has purchase commitments primarily for raw materials and energy-related take-or-pay contracts. Commitments made under these obligations as of December 31, 2023 Amount of commitment expiration per period Less than 1 year 1 to 3 years 3 to 5 years 5 years and thereafter Purchase obligations $ 264 $ 207 $ 99 $ 434 Litigation, Environmental and Indemnifications Corning is a defendant in various lawsuits and is subject to various claims that arise in the normal course of business, the most significant of which are summarized below. 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. Dow Corning Chapter 11 Until June 1, 2016, May 31, 2016, no May 31, 2016, January 2024, 11 December 31, 2023 not Dow Corning Environmental Claims Beginning in September 2019, may December 31, 2023 not Environmental Litigation Corning has been designated by federal or state governments under environmental laws, including Superfund, as a potentially responsible party that may December 31, 2023 2022

Note 13 - Financial Instruments

Note 13 - Financial Instruments	12 Months Ended
	Dec. 31, 2023
Notes to Financial Statements
Derivative Instruments and Hedging Activities Disclosure [Text Block]	13. The following table summarizes the notional amounts and respective fair values of Corning’s derivative financial instruments on a gross basis as of December 31, 2023 2022 December 31, 2023 December 31, 2022 Notional amount Fair value asset (1) Fair value liability (1) Notional amount Fair value asset (1) Fair value liability (1) Derivatives designated as hedging instruments (2) Foreign exchange and precious metals lease contracts (3) $ 241 $ 287 $ 419 $ 104 $ (1 ) Derivatives not designated as hedging instruments: Foreign exchange contracts 1,988 20 $ (17 ) 2,231 44 (49 ) Translated earnings contracts 5,042 324 (80 ) 7,543 530 (141 ) Total derivatives $ 7,271 $ 631 $ (97 ) $ 10,193 $ 678 $ (191 ) ( 1 All of the Company’s derivative contracts are measured at fair value are classified as Level 2 9 ( 2 The amounts above do not €850 December 31, 2023 ( 3 As of December 31, 2023 December 31, 2022 December 31, 2023 2022 The following table summarizes the total gross notional value for translated earnings contracts as of December 31, 2023 2022 Year ended December 31, 2023 2022 Average rate forward contracts: Chinese yuan-denominated $ 684 $ 479 Japanese yen-denominated 463 93 South Korean won-denominated 1,609 2,117 Other foreign currencies (1) 198 237 Option contracts: Japanese yen-denominated (2) 2,088 4,617 Total gross notional value for translated earning contracts $ 5,042 $ 7,543 ( 1 Denominational currencies for average rate forward contracts include the New Taiwan dollar, British pound and euro. ( 2 Japanese yen-denominated option contracts include purchased put and call options and zero zero zero 13. The following tables summarize the effect in the consolidated statements of income relating to Corning’s derivative financial instruments (in millions). The accumulated derivative gain included in accumulated other comprehensive loss on the consolidated balance sheets as of December 31, 2023 2022 Gain recognized in other comprehensive income (OCI) Location of gain (loss) reclassified from accumulated OCI into income Gain (loss) reclassified from accumulated OCI into income 2023 2022 2021 effective (ineffective) 2023 2022 2021 Derivatives hedging relationships for cash flow and fair value hedges: Foreign exchange and precious metals lease contracts $ 81 $ 52 $ 47 Net sales $ 52 $ 14 Cost of sales $ 49 32 39 Other income, net (3 ) (3 ) (1 ) Total cash flow and fair value hedges $ 81 $ 52 $ 47 $ 46 $ 81 $ 52 Gain recognized in income Undesignated derivatives 2023 2022 2021 Location of gain recognized in income Foreign exchange contracts $ 26 $ 46 $ 38 Other income, net Translated earnings contracts 161 351 354 Translated earnings contract gain, net Total undesignated $ 187 $ 397 $ 392 Net Investment Hedges In May 2023, 2026 2031 €850 December 31, 2023 December 31, 2023 not Refer to Note 10 Leased Precious Metals Contracts The carrying amount of the leased precious metals pool, which is included within property, plant and equipment, net of accumulated depreciation in the consolidated balance sheets, is $90 million and $278 million, respectively, as of December 31, 2023 2022 December 31, 2023 2022

Note 14 - Shareholders' Equity

Note 14 - Shareholders' Equity	12 Months Ended
	Dec. 31, 2023
Notes to Financial Statements
Equity [Text Block]	14. Equity Common Stock Dividends On February 7, 2024, Fixed Rate Cumulative Convertible Preferred Stock, Series A The Company had 2,300 outstanding shares of Fixed Rate Cumulative Convertible Preferred Stock, Series A (the “Preferred Stock”) as of December 31, 2020. January 16, 2021, April 5, 2021 April 8, 2021. April 2023, 2022 2021. The 35 million common shares repurchased by Corning were excluded from the weighted-average common shares outstanding for the calculation of the Company's basic and diluted earnings per share starting April 8, 2021. $1.5 The remaining 80 million common shares were accounted for as a conversion of Preferred Stock and resulted in an increase of common stock and additional paid-in-capital based on the carrying value of the Preferred Stock. These common shares were included in the weighted-average common shares outstanding for the calculation of the Company’s basic and diluted earnings per share. Pursuant to the SRA, with respect to the 80 million common shares outstanding held by SDC: • SDC has the option to sell an additional 22 million common shares to Corning in specified tranches from time to time in calendar years 2024 2027. may, not December 31, 2023 2022, 2 • The remaining 58 million shares of common shares are subject to a seven 2027. Share Repurchase Program In 2019, 2018 “2019 In addition to the common shares repurchased under the SRA as discussed above, the Company repurchased 6.0 million and 7.3 million shares of common stock under its 2019 December 31, 2022 2021, 2019 December 31, 2023. As of December 31, 2023 2019 14. Equity (Continued) Common stock Treasury stock Shares Par value Shares Cost Balance as of December 31, 2020 1,726 $ 863 (961 ) $ (19,928 ) Shares issued to benefit plans and for option exercises 9 4 Shares purchased for treasury (7 ) (274 ) Conversion of preferred stock to common stock 115 58 Repurchase of converted common stock (35 ) (18 ) Other, net (1) (2 ) (61 ) Balance as of December 31, 2021 1,815 $ 907 (970 ) $ (20,263 ) Shares issued to benefit plans and for option exercises 5 3 Shares purchased for treasury (6 ) (221 ) Other, net (1) (1 ) (48 ) Balance as of December 31, 2022 1,820 $ 910 (977 ) $ (20,532 ) Shares issued to benefit plans and for option exercises 11 6 Other, net (1) (3 ) (105 ) Balance as of December 31, 2023 1,831 $ 916 (980 ) $ (20,637 ) ( 1 Includes the deemed surrender to the Company of common stock to satisfy employee tax withholding obligations. 14. Equity (Continued) Accumulated Other Comprehensive Loss The following table presents the changes in the components of accumulated other comprehensive loss, including the proportionate share of equity method investee’s accumulated other comprehensive loss (in millions) ( 1 Foreign currency translation adjustments and other Unamortized actuarial gains (losses) and prior service (costs) credits Net unrealized losses on investments Realized and unrealized gains (losses) on derivatives Accumulated other comprehensive loss Balance as of December 31, 2020 $ (329 ) $ (450 ) $ (3 ) $ 42 $ (740 ) Other comprehensive (loss) income before reclassifications (2) $ (582 ) $ 178 $ 43 $ (361 ) Amounts reclassified from accumulated other comprehensive loss (5) (52 ) (52 ) Equity method affiliates (6) (22 ) (22 ) Net current-period other comprehensive (loss) income (604 ) 178 — (9 ) (435 ) Balance as of December 31, 2021 $ (933 ) $ (272 ) $ (3 ) $ 33 $ (1,175 ) Other comprehensive (loss) income before reclassifications (3) $ (762 ) $ 151 $ 31 $ (580 ) Amounts reclassified from accumulated other comprehensive loss (5) 3 (61 ) (58 ) Equity method affiliates (6) (17 ) (17 ) Net current-period other comprehensive (loss) income (779 ) 154 — (30 ) (655 ) Balance as of December 31, 2022 $ (1,712 ) $ (118 ) $ (3 ) $ 3 $ (1,830 ) Other comprehensive (loss) income before reclassifications (4) $ (235 ) $ 1 $ 71 $ (163 ) Amounts reclassified from accumulated other comprehensive loss (5) (25 ) (35 ) (60 ) Equity method affiliates (6) 5 5 Net current-period other comprehensive (loss) income (230 ) (24 ) — 36 (218 ) Balance as of December 31, 2023 $ (1,942 ) $ (142 ) $ (3 ) $ 39 $ (2,048 ) ( 1 All amounts are after tax. Amounts in parentheses indicate debits to accumulated other comprehensive loss. ( 2 Amounts are net of total tax expense of $4 million, primarily driven by $51 million related to retirement plans, offset by positive impacts of $44 million and $3 million related to foreign currency translation adjustments and the hedging component, respectively. ( 3 Amounts are net of total tax benefit of $22 million, primarily driven by $29 million and $24 million related to foreign currency translation adjustments and the hedging component, respectively, offset by negative impacts of $31 million related to retirement plans. ( 4 Amounts are net of total tax benefit of $19 million, primarily driven by $12 million and $8 million related to foreign currency translation adjustments and the hedging component, respectively, offset by negative impacts of $1 million related to retirement plans. ( 5 Tax effect of reclassifications are disclosed separately within the footnote. ( 6 Tax effects related to equity method affiliates are not 14. Equity (Continued) The following table presents reclassifications out of accumulated other comprehensive income (“AOCI”) by component (in millions) ( 1 Amount reclassified from AOCI Affected line item Year ended December 31, in the consolidated Details about AOCI Components 2023 2022 2021 statements of income Amortization of net actuarial gains (loss) $ 39 $ (4 ) $ (3 ) (2) Amortization of prior service (cost) credit (1 ) 3 (2) 38 (4 ) — Total before tax (13 ) 1 Tax (provision) benefit $ 25 $ (3 ) $ — Net of tax Realized gains on designated hedges $ 52 $ 14 Sales $ 49 32 39 Cost of sales (3 ) (3 ) Other expense, net 46 81 53 Total before tax (11 ) (20 ) (1 ) Tax expense $ 35 $ 61 $ 52 Net of tax Total reclassifications for the period $ 60 $ 58 $ 52 Net of tax ( 1 Amounts in parentheses indicate debits to the consolidated statements of income. ( 2 These accumulated other comprehensive loss components are included in net periodic pension cost. Refer to Note 11

Note 15 - Earnings Per Common S

Note 15 - Earnings Per Common Share	12 Months Ended
	Dec. 31, 2023
Notes to Financial Statements
Earnings Per Share [Text Block]	15. Basic earnings per common share are computed by dividing net income available to common shareholders by the weighted-average number of common shares outstanding for the period. Diluted earnings per common share assumes the issuance of common shares for all potentially dilutive securities outstanding. The following table presents the reconciliation of the amounts used to compute basic and diluted earnings per common share (in millions, except per share amounts): Year ended December 31, 2023 2022 2021 Net income attributable to Corning Incorporated $ 581 $ 1,316 $ 1,906 Less: Series A convertible preferred stock dividend 24 Less: Excess consideration paid for redemption of preferred shares (1) 803 Net income available to common shareholders - basic 581 1,316 1,079 Net income available to common shareholders - diluted $ 581 $ 1,316 $ 1,079 Weighted-average common shares outstanding - basic 848 843 828 Effect of dilutive securities: Stock options and other awards 11 14 16 Weighted-average common shares outstanding - diluted 859 857 844 Basic earnings per common share $ 0.69 $ 1.56 $ 1.30 Diluted earnings per common share $ 0.68 $ 1.54 $ 1.28 Anti-dilutive potential shares excluded from diluted earnings per common share: Series A convertible preferred stock dividend (1)(2) 31 Stock options and other awards 2 1 Total 2 1 31 ( 1 Refer to Note 14 ( 2 For the year ended December 31, 2021,

Note 16 - Share-based Compensat

Note 16 - Share-based Compensation	12 Months Ended
	Dec. 31, 2023
Notes to Financial Statements
Share-Based Payment Arrangement [Text Block]	16. The following table presents share-based compensation cost and the unrecognized compensation cost by award type (in millions): Amount of share-based compensation cost recognized Unrecognized compensation cost Weighted-average remaining term in years Year ended December 31, December 31, 2023 2022 2021 2023 Time-based restricted stock and restricted stock units $ 172 $ 111 $ 94 $ 211 2.1 Performance-based restricted stock units 36 52 79 17 1.7 Stock Options 2 7 9 Other 8 5 8 Total share-based compensation cost (1) $ 218 $ 175 $ 190 ( 1 The income tax benefit realized from share-based compensation was $17 million, $16 million and $37 million, respectively, for the years ended December 31, 2023, 2022 2021 As of December 31, 2023 Incentive Stock Plans Time-Based Restricted Stock and Restricted Stock Units The following table summarizes the changes in non-vested time-based restricted stock and restricted stock units during the year ended December 31, 2023 Number of shares (in thousands) Weighted-average grant-date fair value Non-vested shares and share units as of December 31, 2022 11,299 $ 29.19 Granted 7,438 34.90 Vested (4,832 ) 24.44 Forfeited (584 ) 34.03 Non-vested shares and share units as of December 31, 2023 13,321 $ 33.89 The total fair value of time-based restricted stock and restricted stock units that vested during the years ended December 31, 2023, 2022 2021 16. (Continued) Performance-Based Restricted Stock Units The following table summarizes the changes in non-vested performance-based restricted stock units during the year ended December 31, 2023 Number of shares (in thousands) Weighted-average grant-date fair value Non-vested share units as of December 31, 2022 4,696 $ 35.41 Granted 1,674 35.08 Vested (3,587 ) 33.37 Performance adjustments (726 ) 35.43 Forfeited (31 ) 36.26 Non-vested share units as of December 31, 2023 2,026 $ 38.89 The total fair value of performance-based restricted stock units that vested during the years ended December 31, 2023, 2022 2021 Stock Options The following table summarizes information concerning stock options as of December 31, 2023 December 31, 2023 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, 2022 9,665 $ 22.92 Exercised (2,114 ) 19.78 Forfeited and expired (52 ) 19.65 Options outstanding as of December 31, 2023 7,499 23.82 4.95 54,327 Options vested and exercisable as of December 31, 2023 7,499 23.82 4.95 54,327 The aggregate intrinsic value (market value of stock less option exercise price) in the preceding table represents the total pre-tax intrinsic value, based on the Company’s closing stock price as of December 31, 2023 There were no options granted in 2023, 2022 2021. December 31, 2023, 2022 2021 Proceeds received from the exercise of stock options were $42 million, with a corresponding realized tax benefit of $4 million, for the year ended December 31, 2023 December 31, 2023, 2022 2021

Note 17 - Reportable Segments

Note 17 - Reportable Segments	12 Months Ended
	Dec. 31, 2023
Notes to Financial Statements
Segment Reporting Disclosure [Text Block]	17. The Company has determined that it has five reportable segments for financial reporting purposes, as follows: • Optical Communications – manufactures carrier network and enterprise network components for the telecommunications industry; the carrier network group consists primarily of products and solutions for optical-based communications infrastructure for services such as video, data and voice communications, and the enterprise network group consists primarily of optical-based communication networks sold to businesses, governments and individuals for their own use. • Display Technologies – manufactures high quality glass substrates for flat panel displays including liquid crystal displays and organic light-emitting diodes that are used primarily in televisions, notebook computers, desktop monitors, tablets and handheld devices. • Specialty Materials – manufactures products that provide material formulations for glass, glass ceramics and fluoride crystals to meet demand for unique customer needs across a wide variety of commercial and industrial markets, including materials optimized for mobile consumer electronics, semiconductor equipment optics and consumables, aerospace and defense optics, radiation shielding products, sunglasses and telecommunications components. • Environmental Technologies – manufactures ceramic substrates and filter products for emissions control systems in mobile applications. • Life Sciences – develops, manufactures and supplies laboratory products, including labware, equipment, media, serum and reagents enabling workflow solutions for drug discovery and bioproduction. All other businesses that do not Financial results for the reportable segments and Hemlock and Emerging Growth Businesses are prepared on a basis consistent with the internal disaggregation of financial information to assist the chief operating decision maker (“CODM”) in making internal operating decisions. As a significant portion of segment revenues and expenses are denominated in currencies other than the U.S. dollar, management believes it is important to understand the impact on segment net sales and segment net income of translating these currencies into U.S. dollars. Therefore, the Company utilizes constant-currency reporting for the Display Technologies, Specialty Materials, Environmental Technologies and Life Sciences segments to exclude the impact on segment sales and segment net income (loss) from the Japanese yen, South Korean won, Chinese yuan, New Taiwan dollar and euro, as applicable to the segment. The most significant constant-currency adjustment relates to the Japanese yen exposure within the Display Technologies segment. The constant-currency rates established for our core performance measures are internally derived long-term management estimates, which are closely aligned with our hedging instrument rates. These hedging instruments may not The Company believes that the use of constant-currency reporting allows management to understand segment results without the volatility of currency fluctuation, analyze underlying trends in the businesses and establish operational goals and forecasts. Constant-currency rates are as follows and are applied to all periods presented and to all foreign exchange exposures during the period, even though we may 100% Currency Japanese yen Korean won Chinese yuan New Taiwan dollar Euro Rate ¥107 ₩1,175 ¥6.7 NT$31 €.81 17. In addition, certain income and expenses are excluded from segment net income (loss) and included in the unallocated amounts in the reconciliation of reportable segment net income (loss) to consolidated net income. These items are not Corning's administrative and staff functions are performed on a centralized basis and such costs and expenses are allocated among the segments differently than they would be for stand-alone financial reporting purposes. These include certain costs and expenses of shared services, such as information technology, human resources, legal, finance and supply chain management. Expenses that are not may not The following provides historical segment information as described above: Segment Information Optical Communications Display Technologies Specialty Materials Environmental Technologies Life Sciences Hemlock and Emerging Growth Businesses Total For the year ended December 31, 2023 Segment net sales $ 4,012 $ 3,532 $ 1,865 $ 1,766 $ 959 $ 1,446 $ 13,580 Depreciation (1) $ 263 $ 481 $ 149 $ 129 $ 69 $ 144 $ 1,235 Research, development and engineering expenses (2) $ 238 $ 102 $ 229 $ 99 $ 33 $ 162 $ 863 Income tax provision (3) $ (130 ) $ (220 ) $ (53 ) $ (103 ) $ (13 ) $ (22 ) $ (541 ) Segment net income $ 478 $ 842 $ 202 $ 386 $ 50 $ 15 $ 1,973 Investment in affiliated companies, at equity $ 3 $ 105 $ 11 $ 3 $ 174 $ 296 Segment assets (4) $ 3,241 $ 7,899 $ 2,476 $ 1,873 $ 782 $ 2,307 $ 18,578 Capital expenditures $ 176 $ 363 $ 175 $ 31 $ 41 $ 303 $ 1,089 For the year ended December 31, 2022 Segment net sales $ 5,023 $ 3,306 $ 2,002 $ 1,584 $ 1,228 $ 1,662 $ 14,805 Depreciation (1) $ 249 $ 547 $ 155 $ 128 $ 60 $ 146 $ 1,285 Research, development and engineering expenses (2) $ 230 $ 124 $ 222 $ 98 $ 37 $ 163 $ 874 Income tax provision (3) $ (180 ) $ (203 ) $ (90 ) $ (78 ) $ (40 ) $ (24 ) $ (615 ) Segment net income $ 661 $ 769 $ 340 $ 292 $ 153 $ 39 $ 2,254 Investment in affiliated companies, at equity $ 3 $ 102 $ 8 $ 4 $ 144 $ 261 Segment assets (4) $ 3,295 $ 8,104 $ 2,419 $ 2,061 $ 862 $ 2,136 $ 18,877 Capital expenditures $ 368 $ 495 $ 306 $ 110 $ 116 $ 218 $ 1,613 For the year ended December 31, 2021 Segment net sales $ 4,349 $ 3,700 $ 2,008 $ 1,586 $ 1,234 $ 1,243 $ 14,120 Depreciation (1) $ 224 $ 605 $ 161 $ 139 $ 52 $ 134 $ 1,315 Research, development and engineering expenses (2) $ 216 $ 110 $ 208 $ 111 $ 33 $ 160 $ 838 Income tax (provision) benefit (3) $ (152 ) $ (249 ) $ (99 ) $ (72 ) $ (51 ) $ 11 $ (612 ) Segment net income (loss) $ 553 $ 960 $ 371 $ 269 $ 194 $ (51 ) $ 2,296 Investment in affiliated companies, at equity $ 3 $ 109 $ 6 $ 4 $ 142 $ 264 Segment assets (4) $ 3,183 $ 8,672 $ 2,328 $ 2,150 $ 791 $ 2,024 $ 19,148 Capital expenditures $ 301 $ 710 $ 183 $ 228 $ 128 $ 149 $ 1,699 ( 1 Depreciation expense for Corning’s reportable segments and Hemlock and Emerging Growth Businesses includes an allocation of depreciation of corporate property not ( 2 Research, development and engineering expenses include direct project spending that is identifiable to a segment. ( 3 Income tax (provision) benefit reflects a tax rate of 21%. ( 4 Segment assets include inventory, accounts receivable, property, plant and equipment, net of accumulated depreciation, and associated equity companies. 17. The following table presents a reconciliation of net sales of reportable segments to consolidated net sales (in millions): Year ended December 31, 2023 2022 2021 Net sales of reportable segments $ 12,134 $ 13,143 $ 12,877 Net sales of Hemlock and Emerging Growth Businesses 1,446 1,662 1,243 Impact of constant currency reporting (1) (992 ) (616 ) (38 ) Consolidated net sales $ 12,588 $ 14,189 $ 14,082 ( 1 This amount primarily represents the impact of foreign currency adjustments in the Display Technologies segment. The following table presents a reconciliation of net income of reportable segments to consolidated net income (in millions): Year ended December 31, 2023 2022 2021 Net income of reportable segments $ 1,958 $ 2,215 $ 2,347 Net income (loss) of Hemlock and Emerging Growth Businesses 15 39 (51 ) Unallocated amounts: Impact of constant currency reporting (744 ) (480 ) (87 ) Gain on foreign currency hedges related to translated earnings 161 348 354 Translation gain on Japanese yen-denominated debt 100 191 180 Litigation, regulatory and other legal matters (61 ) (100 ) (16 ) Research, development, and engineering expense (1)(2) (162 ) (163 ) (151 ) Amortization of intangibles (122 ) (123 ) (129 ) Interest expense, net (244 ) (237 ) (265 ) Income tax benefit 373 204 120 Pension mark-to-market (15 ) (11 ) (32 ) Severance (charges) credits (2) (187 ) (70 ) 13 Capacity optimization and other charges and credits (3) (284 ) (344 ) (123 ) Bond redemption loss (4) (31 ) Gain on sale of business 53 54 Other corporate items (207 ) (206 ) (277 ) Net income $ 581 $ 1,316 $ 1,906 ( 1 Amount does not ( 2 Refer to Note 2 ( 3 Amount includes charges associated with impairment losses, asset write-offs, accelerated depreciation, disposal costs and inventory write-downs. Refer to Note 2 ( 4 Refer to Note 10 The following table presents a reconciliation of total assets of reportable segments to consolidated total assets (in millions): December 31, 2023 2022 2021 Total assets of reportable segments $ 16,271 $ 16,741 $ 17,124 Total assets of Hemlock and Emerging Growth Businesses 2,307 2,136 2,024 Unallocated amounts: Current assets (1) 2,522 2,823 3,163 Investments (2) 119 99 54 Property, plant and equipment, net (3) 1,038 1,385 1,426 Other non-current assets (4) 6,243 6,315 6,363 Total assets $ 28,500 $ 29,499 $ 30,154 ( 1 Includes cash, other receivables, prepaid expenses and current portion of long-term derivative assets. ( 2 Represents other corporate investments. ( 3 Represents corporate property not ( 4 Includes goodwill, other intangible assets, pension assets, long-term derivative assets, operating leases and deferred income taxes. 17. The following table presents selected financial information about the Company’s product lines and reportable segments (in millions): Year ended December 31, Revenue from external customers 2023 2022 2021 Optical Communications Carrier network $ 2,871 $ 3,760 $ 3,200 Enterprise network 1,141 1,263 1,149 Total Optical Communications 4,012 5,023 4,349 Display Technologies 3,532 3,306 3,700 Specialty Materials Corning® Gorilla® Glass 1,136 1,331 1,403 Advanced optics and other specialty glass 729 671 605 Total Specialty Materials 1,865 2,002 2,008 Environmental Technologies Automotive and other 1,123 934 936 Diesel 643 650 650 Total Environmental Technologies 1,766 1,584 1,586 Life Sciences Labware 487 657 671 Cell culture products 472 571 563 Total Life Science 959 1,228 1,234 Hemlock and Emerging Growth Businesses Polycrystalline Silicon 1,014 1,191 892 Other 432 471 351 Total Hemlock and Emerging Growth Businesses 1,446 1,662 1,243 Net sales of reportable segments 12,134 13,143 12,877 Net sales of Hemlock and Emerging Growth Businesses 1,446 1,662 1,243 Impact of constant currency reporting (1) (992 ) (616 ) (38 ) Consolidated net sales $ 12,588 $ 14,189 $ 14,082 ( 1 This amount primarily represents the impact of foreign currency adjustments in the Display Technologies segment. 17. The following table presents information relating to the Company’s operations by geographic area (in millions): 2023 2022 2021 Net sales (1) Long-lived assets (2) Net sales (1) Long-lived assets (2) Net sales (1) Long-lived assets (2) North America: United States $ 4,439 $ 8,698 $ 5,149 $ 8,937 $ 4,539 $ 8,600 Canada 317 95 503 99 472 114 Mexico 84 211 96 180 93 289 Total North America 4,840 9,004 5,748 9,216 5,104 9,003 Asia Pacific: Japan 667 388 617 429 780 496 Taiwan 855 1,515 813 1,696 983 1,923 China 4,439 4,575 4,435 4,794 4,495 4,966 Korea 418 3,092 514 3,294 640 3,479 Other 620 88 729 81 459 84 Total Asia Pacific 6,999 9,658 7,108 10,294 7,357 10,948 Europe: Germany 535 464 539 459 462 500 Other 998 956 1,116 937 925 910 Total Europe 1,533 1,420 1,655 1,396 1,387 1,410 All Other 208 53 294 67 272 68 Total $ 13,580 $ 20,135 $ 14,805 $ 20,973 $ 14,120 $ 21,429 ( 1 Net sales are attributed to countries based on location of customer. ( 2 Long-lived assets primarily include investments, plant and equipment, goodwill and other intangible assets.

Significant Accounting Policies

Significant Accounting Policies (Policies)	12 Months Ended
	Dec. 31, 2023
Accounting Policies [Abstract]
Consolidation, Policy [Policy Text Block]	Organization Corning Incorporated is a provider of high-performance glass for notebook computers, flat panel desktop monitors, display televisions and other information display applications; carrier network and enterprise network products for the telecommunications industry; ceramic substrates for gasoline and diesel engines in automotive and heavy-duty vehicle markets; laboratory products for the scientific community and specialized polymer products for biotechnology applications; advanced optical materials for the semiconductor industry and the scientific community; polycrystalline silicon products and other technologies. In these notes, the terms “Corning,” “Company,” “we,” “us,” or “our” mean Corning Incorporated and subsidiary companies.
Basis of Accounting, Policy [Policy Text Block]	Basis of Presentation and Principles of Consolidation The consolidated financial statements include the consolidated accounts of Corning Incorporated and its subsidiaries that are consolidated in conformity with accounting principles generally accepted in the United States of America (“GAAP”). All intercompany accounts, transactions and profits have been eliminated. Investments in partially-owned affiliates are accounted for by the equity method when the Company exercises significant influence, which typically occurs when its ownership interest exceeds 20% not The Company consolidates variable interest entities (“VIEs”) when it has the power to direct the significant activities of the entity and the obligation to absorb losses or receive benefits from the entity that may not Certain prior year amounts have been reclassified to conform to the current year presentation. These reclassifications had no
Use of Estimates, Policy [Policy Text Block]	Use of Estimates The preparation of financial statements, in conformity with GAAP, requires management to make estimates and assumptions affecting reported amounts of assets, liabilities, revenue, expenses and the disclosure of contingent assets and liabilities in the consolidated financial statements and related notes. Significant estimates and assumptions in these consolidated financial statements include estimates associated with revenue recognition, restructuring charges, goodwill and long-lived asset impairment tests, estimates of fair value of acquired assets and liabilities, estimates of fair value of investments, equity interests, environmental and legal liabilities, income taxes and deferred tax valuation allowances, assumptions used in calculating pension and other postretirement employee benefit expenses and the fair value of share-based compensation. Due to the inherent uncertainty involved in making estimates, actual results reported in future periods may
Revenue [Policy Text Block]	Revenue Recognition Most of the Company’s revenue is generated by delivery of products to customers and recognized at a point in time based on evaluation of when the customer obtains control of the products. Revenue is recognized when all performance obligations under the terms of a contract are satisfied and control of the product has been transferred to the customer. If customer acceptance clauses are present and it cannot be objectively determined that control has been transferred, revenue is only recorded when customer acceptance is received and all performance obligations have been satisfied. Sales of goods typically do not not Revenue is measured as the amount of consideration expected in exchange for transferring goods or providing services. Sales tax, value-added tax and other taxes are collected concurrently with revenue-producing activities and excluded from revenue. Incidental contract costs that are not At the time revenue is recognized, allowances are recorded with the related reduction to revenue for estimated product returns, allowances and price discounts based upon historical experience and related terms of customer arrangements. Where product warranties are offered, liabilities are established for estimated warranty costs based upon historical experience and specific warranty provisions. Warranty liabilities are adjusted when experience indicates the expected outcome will differ from initial estimates of the liability. Product warranty liabilities were not December 31, 2023 2022 In addition, the Company has contractual arrangements with certain customers, mainly related to Telecommunications products and comprised of design, installation, training and software maintenance services, in which revenue is recognized over time. The performance obligations under these contracts generally require services to be performed over time, resulting in either a straight-line amortization method or an input method using incurred and forecasted expense to predict revenue recognition patterns which follows satisfaction of the performance obligation. Corning’s other revenue was not December 31, 2023 2022 2021 Contract Assets and Liabilities Contract assets, such as incremental costs to obtain or fulfill contracts, are an insignificant component of Corning’s revenue recognition process. Most of Corning’s fulfillment costs as a manufacturer of products are classified as inventory, fixed assets and intangible assets, which are accounted for under the respective guidance for those asset types. Other fulfillment costs are immaterial due to the nature of the products and their respective manufacturing processes. Contract liabilities include customer deposits, deferred revenue and other advanced payments. Customer deposits are primarily related to Display products and deferred revenue is primarily related to Hemlock Semiconductor Group (“HSG”). Other advanced payments are not
Research, Development, and Computer Software, Policy [Policy Text Block]	Research and Development Costs Research and development costs are charged to expense as incurred. Research and development costs totaled $0.9 billion, $0.9 billion and $0.8 billion for the years ended December 31, 2023 2022 2021
Foreign Currency Transactions and Translations Policy [Policy Text Block]	Foreign Currency Translation and Transactions The determination of the functional currency for Corning’s foreign subsidiaries is made based on the appropriate economic factors. For most foreign operations, the local currencies are generally considered to be the functional currencies. Corning’s most significant exception is a Taiwanese subsidiary, which uses the Japanese yen as its functional currency. For all transactions denominated in a currency other than a subsidiary’s functional currency, foreign currency revaluation and remeasurement gains and losses are included in income for the period in which the exchange rates changed. A net foreign currency revaluation and remeasurement gain of $59 million, $130 million and $126 million was recorded for the years ended December 31, 2023 2022 2021 Foreign subsidiary functional currency balance sheet accounts have been translated at period-end exchange rates, and statement of operations accounts have been translated using average exchange rates for the period. Translation gains and losses are recorded as a separate component of accumulated other comprehensive loss in shareholders’ equity. The effects of remeasuring non-functional currency assets and liabilities into the functional currency are included in current earnings, except for those related to intra-entity foreign currency transactions of a long-term investment nature which are recorded together with translation gains and losses in accumulated other comprehensive loss in shareholders’ equity. Upon sale or substantially complete liquidation of an investment in a foreign entity, the amount of net translation gains or losses that have been accumulated in other comprehensive loss attributable to that investment are reported as a gain or loss for the period in which the sale or liquidation occurs.
Compensation Related Costs, Policy [Policy Text Block]	Share-Based Compensation Corning maintains long-term incentive plans (the “Plans”) for employees and non-employee members of its Board of Directors. The Plans are established to grant equity-based compensation awards, including time-based restricted stock and restricted stock units, performance-based restricted stock units, stock options, stock appreciation rights or a combination of awards (collectively, “share-based awards”). Share-based compensation cost is allocated to cost of sales, selling, general and administrative expenses and research, development and engineering expenses in the consolidated statements of income. The cost of share-based compensation awards is equal to the fair value of the award at the grant date and compensation expense is recognized for awards expected to ultimately vest. The number of awards expected to vest equals the total awards granted less an estimation of the number of forfeitures expected to occur prior to vesting. The Company reassesses the probability of vesting annually and adjusts share-based compensation expense based on its probability assessment. The forfeiture assumption is ultimately adjusted to the actual forfeiture rate. The effect of any change in estimated forfeitures would be recognized through a cumulative adjustment that would be included in compensation cost in the period of the change in estimate. As a result, changes in the forfeiture assumptions do not For awards granted to non-employee members of the Company’s Board of Directors, the Company recognizes the compensation expense over the service period for awards with vesting terms and immediately for awards with no During the requisite service period, the Company also recognizes a deferred income tax benefit for the expense recognized. At the time of subsequent vesting, exercise, forfeiture, or expiration of an award, the difference between the Company’s actual income tax deduction, if any, and the previously accrued income tax benefit is recognized in current income tax expense/benefit during the current period. 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. Performance-Based Restricted Stock Units Performance-based restricted stock units are issued by the Company on a discretionary basis, earned upon the achievement of certain targets and are payable in shares of the Company’s common stock upon vesting, typically over a three Stock Options Corning’s stock option plans provide non-qualified and incentive stock options to purchase authorized but unissued common shares, or treasury shares, at the closing market price on the grant date and generally become exercisable in tranches from one five 10 no
Cash and Cash Equivalents, Policy [Policy Text Block]	Cash and Cash Equivalents Cash equivalents consist of highly liquid investments that are readily convertible into cash. Securities with contractual maturities of three The following table presents supplemental disclosures of cash flow information (in millions): Year ended December 31, 2023 2022 2021 Non-cash transactions: Accruals for capital expenditures $ 217 $ 414 $ 357 Cash paid for interest and income taxes: Interest (1) $ 274 $ 275 $ 287 Income taxes, net of refunds received $ 213 $ 426 $ 377 ( 1 Includes approximately $40 million, $48 million and $36 million of interest costs that were capitalized as part of property, plant and equipment during the years ended December 31, 2023 2022 2021
Receivables, Trade and Other Accounts Receivable, Allowance for Doubtful Accounts, Policy [Policy Text Block]	Trade Accounts Receivable, net of Doubtful Accounts The allowance for doubtful accounts is based on the best estimate of the amount of probable lifetime credit losses in existing accounts receivable. The Company determines the allowance based on historical write-off experience and expected future default rate by industry. In addition, in circumstances where the Company is made aware of a specific customer’s inability to meet its financial obligations, a specific allowance is established. The Company does not
Inventory, Policy [Policy Text Block]	Inventories Inventories are stated at the lower of cost or net realizable value using the first first
Property, Plant and Equipment, Policy [Policy Text Block]	Property, Plant and Equipment, Net of Accumulated Depreciation Land, buildings and equipment, including precious metals, are recorded at cost. Depreciation is based on the estimated useful life of the respective assets using the straight-line method. The estimated useful lives generally range from 10 to 40 years for buildings and improvements and 2 to 20 years for equipment, excluding precious metals as discussed below. Interest on borrowings is capitalized during the active construction period of major capital projects, added to the cost of the underlying assets and amortized over the useful life of the assets. Included in the subcategory of equipment are the following types of assets (excluding precious metals): Asset type Range of useful life (in years) Computer hardware and software 3 to 7 Manufacturing equipment 2 to 15 Furniture and fixtures 5 to 10 Transportation equipment 3 to 20 Manufacturing equipment includes certain components of production equipment that are constructed of precious metals. These assets are not not
Lessee, Leases [Policy Text Block]	Leases Corning leases certain real estate, vehicles and equipment from third twelve Renewal and termination options are included in the calculation of the right-of-use assets and lease liabilities when considered to be reasonably certain to be exercised. Lease expense is recognized on a straight-line basis over the lease term for operating leases. Interest expense and amortization of the right-of-use assets relating to finance leases are calculated and recognized using the effective interest and straight-line methods, respectively. Corning does not
Impairment or Disposal of Long-Lived Assets, Policy [Policy Text Block]	Impairment of Long-Lived Assets The recoverability of long-lived assets, such as property, plant and equipment and intangible assets, is reviewed when events or changes in circumstances occur that indicate the carrying value of the asset or asset group may not
Goodwill and Intangible Assets, Goodwill, Policy [Policy Text Block]	Goodwill Goodwill reflects the purchase price of a business acquisition in excess of the fair values assigned to identifiable assets acquired and liabilities assumed. The Company's goodwill relates, and is assigned directly, to one of our six Goodwill is tested for impairment at the reporting unit level, annually, or more frequently if events or changes in circumstances indicate that it is more likely than not not not three not During the current year, the Company performed its detailed triennial quantitative impairment test as of October 1, 2023 no 3
Government Assistance [Policy Text Block]	Government Assistance The Company receives government assistance, typically in the form of cash incentives primarily for capital expansion projects and tax credits that are refundable or transferable. Incentives are recognized when it is probable that the Company will comply with any contractual conditions and that the incentives will be received. Incentives are classified as an asset when they are recognized but have not not During the year ended December 31, 2023, not December 31, 2023, December 31, 2023 not During the year ended December 31, 2022, not December 31, 2022, 1 2 December 31, 2022 not
Environmental Costs, Policy [Policy Text Block]	Environmental Liabilities The Company accrues for its environmental investigation, remediation, operating and maintenance costs when it is probable that a liability has been incurred and the amount can be reasonably estimated. For environmental matters, the most likely cost to be incurred is accrued based on an evaluation of currently available facts with respect to each individual site, current laws and regulations and prior remediation experience. For sites with multiple potentially responsible parties, the Company considers its likely proportionate share of the anticipated remediation costs and the ability of the other parties to fulfill obligations in establishing a provision for those costs. Where no The uncertain nature inherent in such remediation and the possibility that initial estimates may not
Equity Method Investments [Policy Text Block]	Equity Method Investments As of December 31, 2023 2022 December 31, 2023 2022 2021 Equity method investments are reviewed for impairment on a periodic basis, or if an event occurs or circumstances change that indicate the carrying amount may All equity investments that do not not not not December 31, 2023 2022
Pension and Other Postretirement Plans, Pensions, Policy [Policy Text Block]	Employee Retirement Plans Corning offers employee retirement plans consisting of defined benefit pension plans covering certain domestic and international employees and postretirement plans that provide health care and life insurance benefits for eligible retirees and dependents. The costs and obligations related to these benefits reflect the Company’s assumptions related to general economic conditions, particularly interest rates, expected return on plan assets, rate of compensation increase for employees and health care cost trend rates. The cost of providing plan benefits depends on demographic assumptions including retirements, mortality, turnover and plan participation. Costs for defined benefit pension plans consist of two 1 2 10% fourth Costs for postretirement benefit plans consist of on-going costs recognized quarterly, and are comprised of service and interest costs, amortization of prior service costs and amortization of actuarial gains and losses. Actuarial gains and losses resulting from changes in actuarial assumptions are recognized as a component of accumulated other comprehensive loss in shareholders’ equity on an annual basis and amortized into operating results over the average remaining service period of employees expected to receive benefits under the plans, to the extent such gains and losses are outside the corridor.
Income Tax, Policy [Policy Text Block]	Income Taxes The Company accounts for income taxes using the asset and liability method. Under this method, deferred tax assets and liabilities are recognized for the future tax consequences attributable to operating loss and tax credit carryforwards and for differences between the carrying amounts of existing assets and liabilities and their respective tax bases. Valuation allowances are established when management is unable to conclude that it is more likely than not The effective tax rate reflects the assessment of the ultimate outcome of tax audits. In evaluating the tax benefits associated with the Company’s various tax filing positions, a tax benefit for uncertain tax positions is recorded using the highest cumulative tax benefit that is more likely than not Discrete events such as audit settlements or changes in tax laws are recognized in the period in which they occur. Generally, Corning will indefinitely reinvest the foreign earnings of: ( 1 2 3 4 5
Fair Value of Financial Instruments, Policy [Policy Text Block]	Fair Value Measurements Major categories of financial assets and liabilities, including short-term investments, other assets and derivatives, are measured at fair value on a recurring basis. Certain assets and liabilities are measured at fair value on a nonrecurring basis when impaired, which include long-lived assets, goodwill, equity method investments, other investments and asset retirement obligations. Non-financial assets and liabilities or financial assets and liabilities other than derivatives measured at fair value either on a recurring or nonrecurring basis were not December 31, 2023 2022 Fair value is the price that would be received from selling an asset, or paid to transfer a liability, in an orderly transaction between market participants at the measurement date. When determining the fair value measurements for assets and liabilities required to be recorded at fair value, the principal, or most advantageous, market in which Corning would transact is analyzed. Assumptions that market participants would use when pricing the asset or liability, such as inherent risk, transfer restrictions and risk of non-performance, are considered. A three one three 1, 2, 3,
Derivatives, Policy [Policy Text Block]	Derivative Instruments The Company enters into a variety of foreign exchange forward contracts and foreign exchange option contracts to manage the exposure to fluctuations in foreign exchange rates. Financial exposure is managed in accordance with corporate policies and procedures. The Company also utilizes derivatives that are bifurcated from its precious metals lease contracts to manage the exposure of its separate accounting pool of leased precious metals to changes in market prices. The most significant foreign currency exposures relate to the Japanese yen, South Korean won, New Taiwan dollar, Chinese yuan and the euro. Corning seeks to mitigate the impact of exchange rate movements in the income statement by using over-the-counter (“OTC”) derivative instruments including foreign exchange forward and option contracts. In general, the expirations of these contracts coincide with the timing of the underlying foreign currency commitments and transactions. Corning is exposed to potential losses in the event of non-performance by counterparties to these derivative contracts. However, this risk is minimized by maintaining a portfolio with a diverse group of highly-rated major financial institutions. The Company does not All derivatives are recorded at fair value on the consolidated balance sheets. The fair values of these derivative contracts are recorded as either assets (gain position) or liabilities (loss position) on the consolidated balance sheets. Changes in the fair value of derivatives designated as cash flow hedges are not not Designated Hedges Corning uses OTC foreign exchange forward contracts designated as cash flow hedges, with maturities through 2024, December 31, 2023 12 $58 Corning has entered into leases of precious metals, with maturities through 2025. not Corning uses regression analysis or the critical term match method to assess initial hedge effectiveness. Following the inception of a hedging relationship, hedge effectiveness is assessed quarterly based on qualitative factors. Net Investment Hedges From time to time, Corning utilizes derivative and non-derivative net investment hedges to offset risk against investments in foreign subsidiaries with non-USD functional currencies. Changes in the value of these hedging instruments due to foreign currency gains or losses are deferred in other comprehensive loss on the consolidated statements of comprehensive income, within the foreign currency translation adjustments and other line, and will remain in accumulated other comprehensive loss until the hedged investment is sold or substantially liquidated. We evaluate the effectiveness of the net investment hedges each quarter using the critical terms match method. Undesignated Hedges Corning uses OTC foreign exchange forward and option contracts not A significant portion of the Company’s non-U.S. revenue and expenses are denominated in Japanese yen, South Korean won, New Taiwan dollar, Chinese yuan and euro. When this revenue and these expenses are translated back to U.S. dollars, the Company is exposed to foreign exchange rate movements. To protect translated earnings against movements in these currencies, the Company has entered into a series of average rate forwards and option contracts. Most of these contracts hedge a significant portion of the Company’s exposure to the Chinese yuan, Japanese yen and South Korean won. The Company has contracts through 2025 2026
New Accounting Pronouncements, Policy [Policy Text Block]	New Accounting Standards In November 2023, 2023 07 280 2023 07” 2023 07 2023 07 December 15, 2023 December 15, 2024. 2023 07 In December 2023, 2023 09 740 2023 09” 2023 09 2023 09 December 15, 2024. may 2023 09

Note 1 - Summary of Significa_2

Note 1 - Summary of Significant Accounting Policies (Tables)	12 Months Ended
	Dec. 31, 2023
Notes Tables
Schedule of Cash Flow, Supplemental Disclosures [Table Text Block]	Year ended December 31, 2023 2022 2021 Non-cash transactions: Accruals for capital expenditures $ 217 $ 414 $ 357 Cash paid for interest and income taxes: Interest (1) $ 274 $ 275 $ 287 Income taxes, net of refunds received $ 213 $ 426 $ 377
Property Plant and Equipment, Estimated Useful Lives [Table Text Block]	Asset type Range of useful life (in years) Computer hardware and software 3 to 7 Manufacturing equipment 2 to 15 Furniture and fixtures 5 to 10 Transportation equipment 3 to 20

Note 2 - Restructuring, Impai_2

Note 2 - Restructuring, Impairment and Other Charges and Credits (Tables)	12 Months Ended
	Dec. 31, 2023
Notes Tables
Restructuring and Related Costs [Table Text Block]	Year ended December 31, 2023 2022 2021 Severance (1) $ 187 $ 70 $ (13 ) Capacity optimization 176 219 46 Other charges and credits (2) 108 125 77 Total restructuring, impairment and other charges and credits $ 471 $ 414 $ 110 Year ended December 31, 2023 Selling, Research, general development and and Gross administrative engineering margin (1) expenses expenses Other Total Severance $ 65 $ 69 $ 33 $ 20 $ 187 Capacity optimization 121 21 13 21 176 Other charges and credits 97 1 10 108 Total restructuring, impairment and other charges and credits $ 283 $ 91 $ 46 $ 51 $ 471 Year ended December 31, 2022 Selling, Research, general development and and Gross administrative engineering margin (1) expenses expenses Other Total Severance $ 25 $ 32 $ 13 $ 70 Capacity optimization 215 4 219 Other charges and credits 97 15 3 $ 10 125 Total restructuring, impairment and other charges and credits $ 337 $ 51 $ 16 $ 10 $ 414 Year ended December 31, 2021 Selling, Research, general development and and Gross administrative engineering margin (1) expenses expenses Other Total Severance $ (6 ) $ (5 ) $ (2 ) $ (13 ) Capacity optimization 36 7 3 46 Other charges and credits 50 (5 ) $ 32 77 Total restructuring, impairment and other charges and credits $ 80 $ (3 ) $ 1 $ 32 $ 110

Note 3 - Revenue (Tables)

Note 3 - Revenue (Tables)	12 Months Ended
	Dec. 31, 2023
Notes Tables
Disaggregation of Revenue [Table Text Block]	Year ended December 31, 2023 2022 2021 Telecommunication products $ 4,012 $ 5,023 $ 4,349 Display products 2,694 2,829 3,666 Specialty glass products 1,854 1,996 2,008 Environmental substrate and filter products 1,660 1,492 1,584 Life science products 922 1,187 1,232 Polycrystalline silicon products 1,014 1,191 892 All other products 432 471 351 Total Revenue $ 12,588 $ 14,189 $ 14,082

Note 4 - Inventories (Tables)

Note 4 - Inventories (Tables)	12 Months Ended
	Dec. 31, 2023
Notes Tables
Schedule of Inventory, Current [Table Text Block]	December 31, 2023 2022 Finished goods $ 1,242 $ 1,315 Work in process 551 571 Raw materials and accessories 445 537 Supplies and packing materials 428 481 Inventories $ 2,666 $ 2,904

Note 5 - Leases (Tables)

Note 5 - Leases (Tables)	12 Months Ended
	Dec. 31, 2023
Notes Tables
Lease, Cost [Table Text Block]	Year ended December 31, 2023 2022 2021 Operating lease cost $ 171 $ 147 $ 139 Variable lease cost 57 51 59 Short-term lease cost 2 2 2 Total lease cost $ 230 $ 200 $ 200 December 31, 2023 2022 2021 Operating cash outflows from operating leases $ 153 $ 116 $ 134
Assets and Liabilities, Lessee [Table Text Block]	December 31, Location of lease balances 2023 2022 Operating lease right-of-use assets Other assets $ 883 $ 842 Operating lease liabilities - current Other current liabilities $ 112 $ 111 Operating lease liabilities - noncurrent Other liabilities $ 846 $ 795 Weighted-average remaining lease term (in years) 13.6 14.3 Weighted-average discount rate 4.4 % 4.2 %
Operating and Finance Lease, Liability, Maturity [Table Text Block]	December 31, 2023 2024 $ 140 2025 $ 116 2026 $ 104 2027 $ 89 2028 $ 80 After 2028 $ 782 Total operating payments $ 1,311 Less: imputed discount $ 353 Present value of lease payments $ 958

Note 6 - Income Taxes (Tables)

Note 6 - Income Taxes (Tables)	12 Months Ended
	Dec. 31, 2023
Notes Tables
Schedule of Income before Income Tax, Domestic and Foreign [Table Text Block]	Year ended December 31, 2023 2022 2021 U.S. companies $ 105 $ 1,157 $ 1,282 Non-U.S. companies 711 640 1,144 Income before income taxes $ 816 $ 1,797 $ 2,426
Schedule of Components of Income Tax Expense (Benefit) [Table Text Block]	Year ended December 31, 2023 2022 2021 Current: Federal $ (82 ) $ (191 ) $ (172 ) State and municipal (13 ) (16 ) (13 ) Foreign (148 ) (250 ) (290 ) Deferred: Federal 76 52 (97 ) State and municipal 7 8 (7 ) Foreign (8 ) (14 ) 88 Provision for income taxes $ (168 ) $ (411 ) $ (491 )
Schedule of Effective Income Tax Rate Reconciliation [Table Text Block]	Year ended December 31, 2023 2022 2021 Statutory U.S. federal income tax rate 21.0 % 21.0 % 21.0 % State income tax (benefit) provision, net of federal effect (0.3 ) 0.7 1.0 Tax credits (6.9 ) (3.3 ) (2.6 ) Non-Taxable Items (4.0 ) Foreign derived intangible income (2.3 ) (2.7 ) (1.3 ) Stock compensation (2.1 ) (0.8 ) (1.5 ) Remeasurement of deferred tax assets and liabilities (0.3 ) (0.1 ) Differential arising from foreign earnings (1) 0.3 2.2 2.0 Non-deductible Items 4.7 1.4 Audit settlements & change in reserve 4.8 3.7 1.6 Valuation allowance 5.7 2.1 (0.5 ) Intercompany loan adjustment 0.6 Global intangible low-taxed income 0.2 Other items, net (0.5 ) (1.1 ) Effective tax rate 20.6 % 22.9 % 20.2 %
Schedule of Deferred Tax Assets and Liabilities [Table Text Block]	December 31, 2023 2022 Loss and tax credit carryforwards $ 275 $ 281 Other assets 245 232 Research and development capitalization 362 280 Asset impairments and restructuring reserves 43 41 Postretirement medical and life benefits 103 102 Other accrued liabilities 319 311 Other employee benefits 344 346 Gross deferred tax assets 1,691 1,593 Valuation allowances (207 ) (166 ) Total deferred tax assets 1,484 1,427 Intangible and other assets (117 ) (108 ) Fixed assets (223 ) (289 ) Finance leases (209 ) (200 ) Total deferred tax liabilities (549 ) (597 ) Net deferred tax assets $ 935 $ 830
Schedule of Net Deferred Tax Assets [Table Text Block]	December 31, 2023 2022 Deferred tax assets $ 1,153 $ 1,073 Other liabilities (218 ) (243 ) Net deferred tax assets $ 935 $ 830
Summary of Tax Credit Carryforwards [Table Text Block]	Expiration Total 2024-2028 2029-2033 2034-2038 Indefinite Net operating losses $ 274 $ 63 $ 38 $ 33 $ 140 Tax credits 1 1 Balance as of December 31, 2023 $ 275 $ 63 $ 39 $ 33 $ 140
Summary of Valuation Allowance [Table Text Block]	2023 2022 2021 Balance as of January 1 $ 166 $ 138 $ 167 Additions 66 81 13 Reductions (25 ) (53 ) (42 ) Balance as of December 31 $ 207 $ 166 $ 138
Summary of Income Tax Contingencies [Table Text Block]	2023 2022 2021 Balance as of January 1 $ 206 $ 178 $ 131 Additions based on tax positions related to the current year 54 10 54 Additions for tax positions of prior years 127 24 17 Reductions for tax positions of prior years (3 ) (5 ) (21 ) Settlements and lapse of statute of limitations (11 ) (1 ) (3 ) Balance as of December 31 $ 373 $ 206 $ 178

Note 7 - Property, Plant and _2

Note 7 - Property, Plant and Equipment, Net of Accumulated Depreciation (Tables)	12 Months Ended
	Dec. 31, 2023
Notes Tables
Property, Plant and Equipment [Table Text Block]	December 31, 2023 2022 Land $ 412 $ 420 Buildings 5,931 5,963 Equipment (1) 20,896 20,800 Construction in progress 1,944 2,335 Subtotal 29,183 29,518 Accumulated depreciation (14,553 ) (14,147 ) Property, plant and equipment, net of accumulated depreciation (2) $ 14,630 $ 15,371

Note 8 - Goodwill and Other I_2

Note 8 - Goodwill and Other Intangible Assets (Tables)	12 Months Ended
	Dec. 31, 2023
Notes Tables
Schedule of Goodwill [Table Text Block]	Optical Communications Display Technologies Specialty Materials Life Sciences Hemlock and Emerging Growth Businesses Total Balance as of December 31, 2021 $ 915 $ 125 $ 150 $ 616 $ 615 $ 2,421 Acquired goodwill 4 1 5 Foreign currency translation adjustment and other (14 ) (4 ) (10 ) (4 ) (32 ) Balance as of December 31, 2022 $ 905 $ 121 $ 151 $ 606 $ 611 $ 2,394 Foreign currency translation adjustment and other (1 ) (2 ) 1 (12 ) (14 ) Balance as of December 31, 2023 $ 904 $ 119 $ 151 $ 607 $ 599 $ 2,380
Schedule of Finite-Lived Intangible Assets [Table Text Block]	December 31, 2023 2022 Gross Accumulated amortization Net Gross Accumulated amortization Net Amortized intangible assets: Patents, trademarks & trade names $ 493 $ 318 $ 175 $ 496 $ 300 $ 196 Customer lists and other (1) 1,464 734 730 1,461 628 833 Other intangible assets, net $ 1,957 $ 1,052 $ 905 $ 1,957 $ 928 $ 1,029

Note 9 - Other Assets and Oth_2

Note 9 - Other Assets and Other Liabilities (Tables)	12 Months Ended
	Dec. 31, 2023
Notes Tables
Schedule of Other Assets [Table Text Block]	December 31, 2023 2022 Current assets: Derivative instruments (Note 13) $ 501 $ 454 Other current assets 694 703 Other current assets $ 1,195 $ 1,157 Non-current assets: Derivative instruments (Note 13) $ 130 $ 224 South Korean tax deposits (Note 6) 261 349 Operating leases (Note 5) 883 842 Investments 414 360 Other non-current assets 532 404 Other assets $ 2,220 $ 2,179
Other Liabilities [Table Text Block]	December 31, 2023 2022 Current liabilities: Wages and employee benefits $ 609 $ 727 Income taxes (Note 6) 69 127 Derivative instruments (Note 13) 66 174 Deferred revenue (Note 3) 181 144 Customer deposits (Note 3) 148 132 Share repurchase liability (Note 14) 506 Short-term operating leases (Note 5) 112 111 Other current liabilities 1,348 1,226 Other accrued liabilities $ 2,533 $ 3,147 Non-current liabilities: Defined benefit pension plan liabilities (Note 11) $ 721 $ 668 Derivative instruments (Note 13) 31 17 Deferred revenue (Note 3) 679 725 Customer deposits (Note 3) 1,083 1,137 Deferred tax liabilities (Note 6) 218 243 Long-term operating leases (Note 5) 846 795 Other non-current liabilities 1,131 1,370 Other liabilities $ 4,709 $ 4,955

Note 10 - Debt (Tables)

Note 10 - Debt (Tables)	12 Months Ended
	Dec. 31, 2023
Notes Tables
Schedule of Debt [Table Text Block]	December 31, 2023 2022 Long-term debt Medium-term notes, average rate 0.70 $ 149 $ 45 Debentures, 6.85 157 159 Debentures, callable, 7.25 249 249 Debentures, 4.70 296 296 Debentures, 5.75 396 396 Debentures, 4.75 497 496 Debentures, 5.35 545 544 Debentures, 3.90 395 395 Debentures, 4.375 743 743 Debentures, 5.85 297 297 Debentures, 5.45 1,086 1,086 Yen-denominated debentures, 0.698 160 Yen-denominated debentures, 0.722 71 76 Yen-denominated debentures, 0.992 263 358 Yen-denominated debentures, 1.043 181 232 Yen-denominated debentures, 1.219 177 190 Yen-denominated debentures, 1.153 221 237 Yen-denominated debentures, 1.583 71 76 Yen-denominated debentures, 1.513 41 45 Euro-denominated notes, 3.875 330 Euro-denominated notes, 4.125 602 Financing Leases, average discount rate 4.6 195 190 Other, average rate 3.85 564 641 Total long-term debt, including current portion 7,526 6,911 Less current portion of long-term debt 320 224 Long-term debt $ 7,206 $ 6,687
Schedule of Maturities of Long-Term Debt [Table Text Block]	2024 2025 2026 2027 2028 Thereafter $ 320 $ 188 $ 397 $ 312 $ 210 $ 6,203

Note 11 - Employee Retirement_2

Note 11 - Employee Retirement Plans (Tables)	12 Months Ended
	Dec. 31, 2023
Notes Tables
Defined Benefit Plan, Plan with Projected Benefit Obligation in Excess of Plan Assets [Table Text Block]	December 31, 2023 2022 Projected benefit obligation $ 3,540 $ 3,406 Fair value of plan assets $ 2,791 $ 2,712 Accumulated benefit obligation $ 3,376 $ 3,238 Fair value of plan assets $ 2,791 $ 2,712
Schedule of Net Benefit Costs [Table Text Block]	Domestic pension benefits International pension benefits Postretirement benefits 2023 2022 2021 2023 2022 2021 2023 2022 2021 Service cost $ 80 $ 105 $ 102 $ 18 $ 22 $ 25 $ 5 $ 9 $ 10 Interest cost 168 98 78 20 11 10 23 15 15 Expected return on plan assets (176 ) (210 ) (209 ) (13 ) (9 ) (7 ) Amortization of prior service cost (credit) 6 6 4 (1 ) (1 ) (5 ) (5 ) (6 ) Amortization of actuarial (gain) loss (22 ) (5 ) 2 Recognition of actuarial (gain) loss (16 ) 29 10 1 8 1 Total net periodic benefit expense (income) $ 62 $ 28 $ (15 ) $ 26 $ 31 $ 28 $ 1 $ 14 $ 21 Settlement charge $ 2 Curtailment charge $ 3 Special termination benefit charge 15 $ 2 $ 1 Total expense (income) $ 80 $ 30 $ (15 ) $ 26 $ 33 $ 28 $ 2 $ 14 $ 21 Other changes in plan assets and benefit Curtailment effects $ (4 ) Settlements $ 11 Current year actuarial (loss) gain (16 ) $ 16 $ (105 ) $ 14 (27 ) $ (7 ) $ 5 $ (209 ) $ (105 ) Amortization of actuarial gain (loss) 22 5 (2 ) Recognition of actuarial gain (loss) 16 (29 ) (10 ) 1 20 (1 ) Current year prior service cost 28 Amortization of prior service (cost) credit (6 ) (6 ) (4 ) 1 1 (8 ) 5 6 Total recognized in other comprehensive (loss) income $ (10 ) $ 9 $ (119 ) $ 15 $ 5 $ (7 ) $ 19 $ (199 ) $ (101 )
Defined Benefit Plan, Assumptions [Table Text Block]	Pension benefits Domestic International Postretirement benefits 2023 2022 2021 2023 2022 2021 2023 2022 2021 Discount rate 5.16 % 5.50 % 2.87 % 2.30 % 2.46 % 1.20 % 5.24 % 5.58 % 2.99 % Rate of compensation increase 3.97 % 3.48 % 3.50 % 3.74 % 3.73 % 3.63 % Cash balance crediting rate 4.22 % 4.14 % 3.86 % 0.82 % 0.82 % 0.91 % Employee contributions crediting rate 5.25 % 4.62 % 1.57 % Pension benefits Domestic International Postretirement benefits 2023 2022 2021 2023 2022 2021 2023 2022 2021 Discount rate 5.50 % 2.88 % 2.50 % 2.46 % 1.20 % 1.02 % 5.58 % 2.99 % 2.69 % Expected return on plan assets 6.75 % 6.00 % 6.00 % 3.85 % 1.64 % 1.26 % Rate of compensation increase 3.87 % 3.50 % 4.16 % 3.73 % 3.63 % 3.55 % Cash balance crediting rate 3.86 % 3.86 % 3.84 % 0.82 % 0.91 % 0.94 % Employee contributions crediting rate 4.62 % 1.57 % 0.62 %
Schedule of Health Care Cost Trend Rates [Table Text Block]	Assumed health care trend rates as of December 31 2023 2022 Health care cost trend rate assumed for next year (pre-65 / post-65 retirees) 6.75% / 14.75% 7.00% / 4.25% Ultimate health care trend rate 5 % 5 % Year that the rate reaches the ultimate trend rate 2031 2031
Fair Value, Assets Measured on Recurring Basis [Table Text Block]	December 31, 2023 December 31, 2022 Total Level 1 Level 2 Level 3 Total Level 1 Level 2 Level 3 Equity securities: U.S. companies $ 1,260 $ 9 $ 1,251 $ 1,168 $ 63 $ 1,105 International companies Fixed income: U.S. treasury bonds 204 204 400 400 U.S. corporate bonds 946 946 1,060 1,060 Preferred securities 1 1 1 1 Private equity (1) 24 $ 24 Real estate (2) 3 $ 3 7 7 Cash equivalents 346 339 7 28 28 Total $ 2,760 $ 552 $ 2,205 $ 3 $ 2,688 $ 491 $ 2,166 $ 31
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Table Text Block]	Domestic International Private equity Real estate Mortgages Insurance contracts Other Balance as of December 31, 2021 $ 41 $ 10 $ 22 $ 2 Actual return on plan assets relating to assets still held at the reporting date (8 ) 1 Actual return on plan assets relating to assets sold during the reporting period 1 Asset (sales) purchases (9 ) (3 ) 18 190 $ 11 Balance as of December 31, 2022 $ 24 $ 7 $ 42 $ 192 $ 11 Actual return on plan assets relating to assets still held at the reporting date (12 ) 1 Actual return on plan assets relating to assets sold during the reporting period Asset (sales) purchases (12 ) (4 ) 3 1 Balance as of December 31, 2023 $ — $ 3 $ 43 $ 195 $ 12
Schedule of Expected Benefit Payments [Table Text Block]	Expected benefit payments Domestic pension benefits International pension benefits Postretirement benefits 2024 $ 260 $ 30 $ 28 2025 $ 257 $ 38 $ 28 2026 $ 260 $ 39 $ 29 2027 $ 267 $ 39 $ 29 2028 $ 267 $ 44 $ 29 2029-2033 $ 1,401 $ 237 $ 148
Pension Plan [Member]
Notes Tables
Schedule of Defined Benefit Plans Disclosures [Table Text Block]	Domestic pension benefits International pension benefits Postretirement benefits 2023 2022 2023 2022 2023 2022 Change in benefit obligation Benefit obligation at beginning of year $ 3,182 $ 4,075 $ 549 $ 736 $ 434 $ 654 Service cost 80 105 18 22 5 9 Interest cost 168 98 20 11 23 15 Plan participants’ contributions 9 7 Plan amendments 28 Actuarial gain 89 (925 ) 9 (137 ) (7 ) (209 ) Other (1) 14 3 (3 ) (1 ) 1 Benefits paid (222 ) (202 ) (25 ) (21 ) (40 ) (42 ) Foreign currency translation 10 (61 ) Benefit obligation at end of year $ 3,311 $ 3,182 $ 578 $ 549 $ 425 $ 434 Change in plan assets Fair value of plan assets at beginning of year $ 2,683 $ 3,598 $ 381 $ 584 $ 5 $ 9 Actual gain (loss) on plan assets 281 (728 ) 10 (139 ) Employer contributions 18 15 32 8 26 31 Plan participants’ contributions 9 7 Benefits paid (222 ) (202 ) (25 ) (21 ) (40 ) (42 ) Foreign currency translation 7 (51 ) Fair value of plan assets at end of year $ 2,760 $ 2,683 $ 405 $ 381 $ — $ 5 Funded status at end of year Fair value of plan assets $ 2,760 $ 2,683 $ 405 $ 381 $ — $ 5 Benefit obligations (3,311 ) (3,182 ) (578 ) (549 ) (425 ) (434 ) Funded status of plans $ (551 ) $ (499 ) $ (173 ) $ (168 ) $ (425 ) $ (429 ) Amounts recognized in the consolidated balance sheets consist of: Noncurrent asset $ 24 $ 26 Current liability $ (17 ) $ (18 ) (8 ) (7 ) $ (27 ) $ (22 ) Noncurrent liability (534 ) (481 ) (189 ) (187 ) (398 ) (407 ) Recognized liability $ (551 ) $ (499 ) $ (173 ) $ (168 ) $ (425 ) $ (429 ) Amounts recognized in accumulated other comprehensive loss consist of: Net actuarial loss (gain) $ 259 $ 259 $ 10 $ (2 ) $ (212 ) $ (226 ) Prior service cost (credit) 34 44 (1 ) (10 ) (15 ) Amounts recognized at end of year $ 293 $ 303 $ 10 $ (3 ) $ (222 ) $ (241 )
Foreign Plan [Member] | Pension Plan and Other Postretirement Benefits Plan [Member]
Notes Tables
Fair Value, Assets Measured on Recurring Basis [Table Text Block]	December 31, 2023 December 31, 2022 Total Level 1 Level 2 Level 3 Total Level 1 Level 2 Level 3 Fixed income: International fixed income $ 96 $ 96 $ 87 $ 87 Insurance contracts 195 $ 195 192 $ 192 Mortgages 43 43 42 42 Cash equivalents 59 59 48 48 Other 12 12 12 1 11 Total $ 405 $ 155 $ - $ 250 $ 381 $ 136 $ - $ 245

Note 12 - Commitments, Contin_2

Note 12 - Commitments, Contingencies and Guarantees (Tables)	12 Months Ended
	Dec. 31, 2023
Notes Tables
Recorded Unconditional Purchase Obligations [Table Text Block]	Amount of commitment expiration per period Less than 1 year 1 to 3 years 3 to 5 years 5 years and thereafter Purchase obligations $ 264 $ 207 $ 99 $ 434

Note 13 - Financial Instrumen_2

Note 13 - Financial Instruments (Tables)	12 Months Ended
	Dec. 31, 2023
Notes Tables
Schedule of Notional Amounts of Outstanding Derivative Positions [Table Text Block]	December 31, 2023 December 31, 2022 Notional amount Fair value asset (1) Fair value liability (1) Notional amount Fair value asset (1) Fair value liability (1) Derivatives designated as hedging instruments (2) Foreign exchange and precious metals lease contracts (3) $ 241 $ 287 $ 419 $ 104 $ (1 ) Derivatives not designated as hedging instruments: Foreign exchange contracts 1,988 20 $ (17 ) 2,231 44 (49 ) Translated earnings contracts 5,042 324 (80 ) 7,543 530 (141 ) Total derivatives $ 7,271 $ 631 $ (97 ) $ 10,193 $ 678 $ (191 )
Derivatives Not Designated as Hedging Instruments [Table Text Block]	Year ended December 31, 2023 2022 Average rate forward contracts: Chinese yuan-denominated $ 684 $ 479 Japanese yen-denominated 463 93 South Korean won-denominated 1,609 2,117 Other foreign currencies (1) 198 237 Option contracts: Japanese yen-denominated (2) 2,088 4,617 Total gross notional value for translated earning contracts $ 5,042 $ 7,543
Not Designated as Hedging Instrument [Member]
Notes Tables
Schedule of Derivative Instruments, Effect on Other Comprehensive Income (Loss) [Table Text Block]	Gain recognized in income Undesignated derivatives 2023 2022 2021 Location of gain recognized in income Foreign exchange contracts $ 26 $ 46 $ 38 Other income, net Translated earnings contracts 161 351 354 Translated earnings contract gain, net Total undesignated $ 187 $ 397 $ 392
Designated as Hedging Instrument [Member]
Notes Tables
Schedule of Derivative Instruments, Effect on Other Comprehensive Income (Loss) [Table Text Block]	Gain recognized in other comprehensive income (OCI) Location of gain (loss) reclassified from accumulated OCI into income Gain (loss) reclassified from accumulated OCI into income 2023 2022 2021 effective (ineffective) 2023 2022 2021 Derivatives hedging relationships for cash flow and fair value hedges: Foreign exchange and precious metals lease contracts $ 81 $ 52 $ 47 Net sales $ 52 $ 14 Cost of sales $ 49 32 39 Other income, net (3 ) (3 ) (1 ) Total cash flow and fair value hedges $ 81 $ 52 $ 47 $ 46 $ 81 $ 52

Note 14 - Shareholders' Equity

Note 14 - Shareholders' Equity (Tables)	12 Months Ended
	Dec. 31, 2023
Notes Tables
Schedule of Stockholders Equity [Table Text Block]	Common stock Treasury stock Shares Par value Shares Cost Balance as of December 31, 2020 1,726 $ 863 (961 ) $ (19,928 ) Shares issued to benefit plans and for option exercises 9 4 Shares purchased for treasury (7 ) (274 ) Conversion of preferred stock to common stock 115 58 Repurchase of converted common stock (35 ) (18 ) Other, net (1) (2 ) (61 ) Balance as of December 31, 2021 1,815 $ 907 (970 ) $ (20,263 ) Shares issued to benefit plans and for option exercises 5 3 Shares purchased for treasury (6 ) (221 ) Other, net (1) (1 ) (48 ) Balance as of December 31, 2022 1,820 $ 910 (977 ) $ (20,532 ) Shares issued to benefit plans and for option exercises 11 6 Other, net (1) (3 ) (105 ) Balance as of December 31, 2023 1,831 $ 916 (980 ) $ (20,637 )
Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block]	Foreign currency translation adjustments and other Unamortized actuarial gains (losses) and prior service (costs) credits Net unrealized losses on investments Realized and unrealized gains (losses) on derivatives Accumulated other comprehensive loss Balance as of December 31, 2020 $ (329 ) $ (450 ) $ (3 ) $ 42 $ (740 ) Other comprehensive (loss) income before reclassifications (2) $ (582 ) $ 178 $ 43 $ (361 ) Amounts reclassified from accumulated other comprehensive loss (5) (52 ) (52 ) Equity method affiliates (6) (22 ) (22 ) Net current-period other comprehensive (loss) income (604 ) 178 — (9 ) (435 ) Balance as of December 31, 2021 $ (933 ) $ (272 ) $ (3 ) $ 33 $ (1,175 ) Other comprehensive (loss) income before reclassifications (3) $ (762 ) $ 151 $ 31 $ (580 ) Amounts reclassified from accumulated other comprehensive loss (5) 3 (61 ) (58 ) Equity method affiliates (6) (17 ) (17 ) Net current-period other comprehensive (loss) income (779 ) 154 — (30 ) (655 ) Balance as of December 31, 2022 $ (1,712 ) $ (118 ) $ (3 ) $ 3 $ (1,830 ) Other comprehensive (loss) income before reclassifications (4) $ (235 ) $ 1 $ 71 $ (163 ) Amounts reclassified from accumulated other comprehensive loss (5) (25 ) (35 ) (60 ) Equity method affiliates (6) 5 5 Net current-period other comprehensive (loss) income (230 ) (24 ) — 36 (218 ) Balance as of December 31, 2023 $ (1,942 ) $ (142 ) $ (3 ) $ 39 $ (2,048 )
Reclassification out of Accumulated Other Comprehensive Income [Table Text Block]	Amount reclassified from AOCI Affected line item Year ended December 31, in the consolidated Details about AOCI Components 2023 2022 2021 statements of income Amortization of net actuarial gains (loss) $ 39 $ (4 ) $ (3 ) (2) Amortization of prior service (cost) credit (1 ) 3 (2) 38 (4 ) — Total before tax (13 ) 1 Tax (provision) benefit $ 25 $ (3 ) $ — Net of tax Realized gains on designated hedges $ 52 $ 14 Sales $ 49 32 39 Cost of sales (3 ) (3 ) Other expense, net 46 81 53 Total before tax (11 ) (20 ) (1 ) Tax expense $ 35 $ 61 $ 52 Net of tax Total reclassifications for the period $ 60 $ 58 $ 52 Net of tax

Note 15 - Earnings Per Common_2

Note 15 - Earnings Per Common Share (Tables)	12 Months Ended
	Dec. 31, 2023
Notes Tables
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]	Year ended December 31, 2023 2022 2021 Net income attributable to Corning Incorporated $ 581 $ 1,316 $ 1,906 Less: Series A convertible preferred stock dividend 24 Less: Excess consideration paid for redemption of preferred shares (1) 803 Net income available to common shareholders - basic 581 1,316 1,079 Net income available to common shareholders - diluted $ 581 $ 1,316 $ 1,079 Weighted-average common shares outstanding - basic 848 843 828 Effect of dilutive securities: Stock options and other awards 11 14 16 Weighted-average common shares outstanding - diluted 859 857 844 Basic earnings per common share $ 0.69 $ 1.56 $ 1.30 Diluted earnings per common share $ 0.68 $ 1.54 $ 1.28 Anti-dilutive potential shares excluded from diluted earnings per common share: Series A convertible preferred stock dividend (1)(2) 31 Stock options and other awards 2 1 Total 2 1 31

Note 16 - Share-based Compens_2

Note 16 - Share-based Compensation (Tables)	12 Months Ended
	Dec. 31, 2023
Notes Tables
Share-Based Payment Arrangement, Cost by Plan [Table Text Block]	Amount of share-based compensation cost recognized Unrecognized compensation cost Weighted-average remaining term in years Year ended December 31, December 31, 2023 2022 2021 2023 Time-based restricted stock and restricted stock units $ 172 $ 111 $ 94 $ 211 2.1 Performance-based restricted stock units 36 52 79 17 1.7 Stock Options 2 7 9 Other 8 5 8 Total share-based compensation cost (1) $ 218 $ 175 $ 190
Share-Based Payment Arrangement, Restricted Stock and Restricted Stock Unit, Activity [Table Text Block]	Number of shares (in thousands) Weighted-average grant-date fair value Non-vested shares and share units as of December 31, 2022 11,299 $ 29.19 Granted 7,438 34.90 Vested (4,832 ) 24.44 Forfeited (584 ) 34.03 Non-vested shares and share units as of December 31, 2023 13,321 $ 33.89
Share-Based Payment Arrangement, Performance Shares, Activity [Table Text Block]	Number of shares (in thousands) Weighted-average grant-date fair value Non-vested share units as of December 31, 2022 4,696 $ 35.41 Granted 1,674 35.08 Vested (3,587 ) 33.37 Performance adjustments (726 ) 35.43 Forfeited (31 ) 36.26 Non-vested share units as of December 31, 2023 2,026 $ 38.89
Share-Based Payment Arrangement, Option, 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, 2022 9,665 $ 22.92 Exercised (2,114 ) 19.78 Forfeited and expired (52 ) 19.65 Options outstanding as of December 31, 2023 7,499 23.82 4.95 54,327 Options vested and exercisable as of December 31, 2023 7,499 23.82 4.95 54,327

Note 17 - Reportable Segments (

Note 17 - Reportable Segments (Tables)	12 Months Ended
	Dec. 31, 2023
Notes Tables
Schedule of Segment Reporting Information, by Segment [Table Text Block]	Optical Communications Display Technologies Specialty Materials Environmental Technologies Life Sciences Hemlock and Emerging Growth Businesses Total For the year ended December 31, 2023 Segment net sales $ 4,012 $ 3,532 $ 1,865 $ 1,766 $ 959 $ 1,446 $ 13,580 Depreciation (1) $ 263 $ 481 $ 149 $ 129 $ 69 $ 144 $ 1,235 Research, development and engineering expenses (2) $ 238 $ 102 $ 229 $ 99 $ 33 $ 162 $ 863 Income tax provision (3) $ (130 ) $ (220 ) $ (53 ) $ (103 ) $ (13 ) $ (22 ) $ (541 ) Segment net income $ 478 $ 842 $ 202 $ 386 $ 50 $ 15 $ 1,973 Investment in affiliated companies, at equity $ 3 $ 105 $ 11 $ 3 $ 174 $ 296 Segment assets (4) $ 3,241 $ 7,899 $ 2,476 $ 1,873 $ 782 $ 2,307 $ 18,578 Capital expenditures $ 176 $ 363 $ 175 $ 31 $ 41 $ 303 $ 1,089 For the year ended December 31, 2022 Segment net sales $ 5,023 $ 3,306 $ 2,002 $ 1,584 $ 1,228 $ 1,662 $ 14,805 Depreciation (1) $ 249 $ 547 $ 155 $ 128 $ 60 $ 146 $ 1,285 Research, development and engineering expenses (2) $ 230 $ 124 $ 222 $ 98 $ 37 $ 163 $ 874 Income tax provision (3) $ (180 ) $ (203 ) $ (90 ) $ (78 ) $ (40 ) $ (24 ) $ (615 ) Segment net income $ 661 $ 769 $ 340 $ 292 $ 153 $ 39 $ 2,254 Investment in affiliated companies, at equity $ 3 $ 102 $ 8 $ 4 $ 144 $ 261 Segment assets (4) $ 3,295 $ 8,104 $ 2,419 $ 2,061 $ 862 $ 2,136 $ 18,877 Capital expenditures $ 368 $ 495 $ 306 $ 110 $ 116 $ 218 $ 1,613 For the year ended December 31, 2021 Segment net sales $ 4,349 $ 3,700 $ 2,008 $ 1,586 $ 1,234 $ 1,243 $ 14,120 Depreciation (1) $ 224 $ 605 $ 161 $ 139 $ 52 $ 134 $ 1,315 Research, development and engineering expenses (2) $ 216 $ 110 $ 208 $ 111 $ 33 $ 160 $ 838 Income tax (provision) benefit (3) $ (152 ) $ (249 ) $ (99 ) $ (72 ) $ (51 ) $ 11 $ (612 ) Segment net income (loss) $ 553 $ 960 $ 371 $ 269 $ 194 $ (51 ) $ 2,296 Investment in affiliated companies, at equity $ 3 $ 109 $ 6 $ 4 $ 142 $ 264 Segment assets (4) $ 3,183 $ 8,672 $ 2,328 $ 2,150 $ 791 $ 2,024 $ 19,148 Capital expenditures $ 301 $ 710 $ 183 $ 228 $ 128 $ 149 $ 1,699
Reconciliation of Revenue from Segments to Consolidated [Table Text Block]	Year ended December 31, 2023 2022 2021 Net sales of reportable segments $ 12,134 $ 13,143 $ 12,877 Net sales of Hemlock and Emerging Growth Businesses 1,446 1,662 1,243 Impact of constant currency reporting (1) (992 ) (616 ) (38 ) Consolidated net sales $ 12,588 $ 14,189 $ 14,082
Reconciliation of Net Income (Loss) from Segments to Consolidated [Table Text Block]	Year ended December 31, 2023 2022 2021 Net income of reportable segments $ 1,958 $ 2,215 $ 2,347 Net income (loss) of Hemlock and Emerging Growth Businesses 15 39 (51 ) Unallocated amounts: Impact of constant currency reporting (744 ) (480 ) (87 ) Gain on foreign currency hedges related to translated earnings 161 348 354 Translation gain on Japanese yen-denominated debt 100 191 180 Litigation, regulatory and other legal matters (61 ) (100 ) (16 ) Research, development, and engineering expense (1)(2) (162 ) (163 ) (151 ) Amortization of intangibles (122 ) (123 ) (129 ) Interest expense, net (244 ) (237 ) (265 ) Income tax benefit 373 204 120 Pension mark-to-market (15 ) (11 ) (32 ) Severance (charges) credits (2) (187 ) (70 ) 13 Capacity optimization and other charges and credits (3) (284 ) (344 ) (123 ) Bond redemption loss (4) (31 ) Gain on sale of business 53 54 Other corporate items (207 ) (206 ) (277 ) Net income $ 581 $ 1,316 $ 1,906
Reconciliation of Assets from Segment to Consolidated [Table Text Block]	December 31, 2023 2022 2021 Total assets of reportable segments $ 16,271 $ 16,741 $ 17,124 Total assets of Hemlock and Emerging Growth Businesses 2,307 2,136 2,024 Unallocated amounts: Current assets (1) 2,522 2,823 3,163 Investments (2) 119 99 54 Property, plant and equipment, net (3) 1,038 1,385 1,426 Other non-current assets (4) 6,243 6,315 6,363 Total assets $ 28,500 $ 29,499 $ 30,154
Revenue from External Customers by Products and Services [Table Text Block]	Year ended December 31, Revenue from external customers 2023 2022 2021 Optical Communications Carrier network $ 2,871 $ 3,760 $ 3,200 Enterprise network 1,141 1,263 1,149 Total Optical Communications 4,012 5,023 4,349 Display Technologies 3,532 3,306 3,700 Specialty Materials Corning® Gorilla® Glass 1,136 1,331 1,403 Advanced optics and other specialty glass 729 671 605 Total Specialty Materials 1,865 2,002 2,008 Environmental Technologies Automotive and other 1,123 934 936 Diesel 643 650 650 Total Environmental Technologies 1,766 1,584 1,586 Life Sciences Labware 487 657 671 Cell culture products 472 571 563 Total Life Science 959 1,228 1,234 Hemlock and Emerging Growth Businesses Polycrystalline Silicon 1,014 1,191 892 Other 432 471 351 Total Hemlock and Emerging Growth Businesses 1,446 1,662 1,243 Net sales of reportable segments 12,134 13,143 12,877 Net sales of Hemlock and Emerging Growth Businesses 1,446 1,662 1,243 Impact of constant currency reporting (1) (992 ) (616 ) (38 ) Consolidated net sales $ 12,588 $ 14,189 $ 14,082
Schedule of Revenue from External Customers and Long-Lived Assets, by Geographical Areas [Table Text Block]	2023 2022 2021 Net sales (1) Long-lived assets (2) Net sales (1) Long-lived assets (2) Net sales (1) Long-lived assets (2) North America: United States $ 4,439 $ 8,698 $ 5,149 $ 8,937 $ 4,539 $ 8,600 Canada 317 95 503 99 472 114 Mexico 84 211 96 180 93 289 Total North America 4,840 9,004 5,748 9,216 5,104 9,003 Asia Pacific: Japan 667 388 617 429 780 496 Taiwan 855 1,515 813 1,696 983 1,923 China 4,439 4,575 4,435 4,794 4,495 4,966 Korea 418 3,092 514 3,294 640 3,479 Other 620 88 729 81 459 84 Total Asia Pacific 6,999 9,658 7,108 10,294 7,357 10,948 Europe: Germany 535 464 539 459 462 500 Other 998 956 1,116 937 925 910 Total Europe 1,533 1,420 1,655 1,396 1,387 1,410 All Other 208 53 294 67 272 68 Total $ 13,580 $ 20,135 $ 14,805 $ 20,973 $ 14,120 $ 21,429

Note 1 - Summary of Significa_3

Note 1 - Summary of Significant Accounting Policies (Details Textual) $ in Millions	12 Months Ended
	Dec. 31, 2023 USD ($)	Dec. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)
Research and Development Expense	$ 900	$ 900	$ 800
Realized Gain (Loss), Foreign Currency Transaction, before Tax	59	130	126
Interest Costs Capitalized	$ 40	48	36
Number of Reporting Units	6
Equity Method Investments	$ 296	261
Revenues	12,588	14,189	14,082
Equity Method Investee [Member]
Revenues	211	228	$ 312
Other Liabilities [Member]
Government Assistance, Cash Incentives Received, Liability	61	74
Other Accrued Liabilities [Member]
Government Assistance, Cash Incentives Received, Liability		$ 92
Cash Incentives [Member]
Other Assets, Current	98
Cash Incentives [Member] | Other Income [Member]
Government Assistance, Amount	$ 186
Units Tested for Impairment of Goodwill [Member]
Number of Reporting Units	1
Minimum [Member] | Building [Member]
Property, Plant and Equipment, Useful Life (Year)	10 years
Minimum [Member] | Equipment [Member]
Property, Plant and Equipment, Useful Life (Year)	2 years
Maximum [Member] | Building [Member]
Property, Plant and Equipment, Useful Life (Year)	40 years
Maximum [Member] | Equipment [Member]
Property, Plant and Equipment, Useful Life (Year)	20 years
Performance Shares [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period (Year)	3 years
Share-Based Payment Arrangement, Option [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Expiration Period (Year)	10 years
Share-Based Payment Arrangement, Option [Member] | Minimum [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period (Year)	1 year
Share-Based Payment Arrangement, Option [Member] | Maximum [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period (Year)	5 years

Note 1 - Summary of Significa_4

Note 1 - Summary of Significant Accounting Policies - Supplemental Disclosure of Cash Flow Information (Details) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Accruals for capital expenditures		$ 217	$ 414	$ 357
Interest (1)	[1]	274	275	287
Income taxes, net of refunds received		$ 213	$ 426	$ 377
[1]Includes approximately $40 million, $48 million and $36 million of interest costs that were capitalized as part of property, plant and equipment during the years ended December 31, 2023, 2022 and 2021, respectively.

Note 1 - Summary of Significa_5

Note 1 - Summary of Significant Accounting Policies - Useful Life of Equipment (Details)	Dec. 31, 2023
Computer Equipment [Member] | Minimum [Member]
Property, plant and equipment, useful life (Year)	3 years
Computer Equipment [Member] | Maximum [Member]
Property, plant and equipment, useful life (Year)	7 years
Manufacturing Equipment [Member] | Minimum [Member]
Property, plant and equipment, useful life (Year)	2 years
Manufacturing Equipment [Member] | Maximum [Member]
Property, plant and equipment, useful life (Year)	15 years
Furniture and Fixtures [Member] | Minimum [Member]
Property, plant and equipment, useful life (Year)	5 years
Furniture and Fixtures [Member] | Maximum [Member]
Property, plant and equipment, useful life (Year)	10 years
Transportation Equipment [Member] | Minimum [Member]
Property, plant and equipment, useful life (Year)	3 years
Transportation Equipment [Member] | Maximum [Member]
Property, plant and equipment, useful life (Year)	20 years

Note 2 - Restructuring, Impai_3

Note 2 - Restructuring, Impairment and Other Charges and Credits (Details Textual) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Severance Costs	[1]	$ 187	$ 70	$ (13)
Restructuring Costs and Asset Impairment Charges		471	414
Curtailment and Special Termination Benefit Charges [Member]
Severance Costs		20
Employee Severance [Member] | Other Accrued Liabilities [Member]
Restructuring Reserve		$ 118	$ 66
[1]Severance charges in the year ended December 31, 2023 include $20 million in curtailment and special termination benefit charges.

Note 2 - Restructuring, Impai_4

Note 2 - Restructuring, Impairment and Other Charges and Credits - Restructuring, Impairment and Other Charges and Credits Reflected on Consolidated Statement of Income (Loss) (Details) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Severance charges (reversals)	[1]	$ 187	$ 70	$ (13)
Capacity optimization		176	219	46
Other charges and credits (2)	[2]	108	125	77
Total restructuring, impairment and other charges and credits		471	414	110
Cost of Sales [Member]
Severance charges (reversals)	[3]	65	25	(6)
Capacity optimization		121	215	36
Other charges and credits (2)	[3]	97	97	50
Total restructuring, impairment and other charges and credits	[3]	283	337	80
Selling, General and Administrative Expenses [Member]
Severance charges (reversals)		69	32	(5)
Capacity optimization		21	4	7
Other charges and credits (2)		1	15	(5)
Total restructuring, impairment and other charges and credits		91	51	(3)
Research, Development And Engineering Expenses [Member]
Severance charges (reversals)		33	13	(2)
Capacity optimization		13		3
Other charges and credits (2)			3
Total restructuring, impairment and other charges and credits		46	16	1
Other Nonoperating Income (Expense) [Member]
Severance charges (reversals)		20
Capacity optimization		21
Other charges and credits (2)		10	10	32
Total restructuring, impairment and other charges and credits		$ 51	$ 10	$ 32
[1]Severance charges in the year ended December 31, 2023 include $20 million in curtailment and special termination benefit charges.[2]Other charges and credits primarily includes disposal costs and inventory write-downs.[3]Activity reflected in cost of sales.

Note 3 - Revenue (Details Textu

Note 3 - Revenue (Details Textual) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Contract with Customer, Liability	$ 1,200	$ 1,300
Increase (Decrease) in Contract with Customer, Liability	103	198
HSG [Member]
Contract with Customer, Liability	$ 860	$ 869
Maximum [Member]
Long Term Supply, Commitment Period (Year)	10 years

Note 3 - Revenue - Disaggregati

Note 3 - Revenue - Disaggregation of Revenue (Details) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Net sales		$ 12,588	$ 14,189	$ 14,082
Telecommunication Products [Member]
Net sales		4,012	5,023	4,349
Display Products [Member]
Net sales		2,694	2,829	3,666
Specialty Glass Products [Member]
Net sales		1,854	1,996	2,008
Environmental Substrate and Filter Products [Member]
Net sales		1,660	1,492	1,584
Life Science Products [Member]
Net sales		922	1,187	1,232
Polycrystalline Silicon [Member]
Net sales		1,014	1,191	892
Product and Service, Other [Member]
Net sales	[1]	$ 432	$ 471	$ 351
[1]Corning obtained a controlling interest in HSG during the third quarter of 2020 and has consolidated results in Hemlock and Emerging Growth Businesses beginning on September 9, 2020. Refer to Note 3 (HSG Transactions and Acquisitions) in the notes to the consolidated financial statements for additional information.

Note 4 - Inventories - Inventor

Note 4 - Inventories - Inventories (Details) - USD ($) $ in Millions	Dec. 31, 2023	Dec. 31, 2022
Finished goods	$ 1,242	$ 1,315
Work in process	551	571
Raw materials and accessories	445	537
Supplies and packing materials	428	481
Inventories	$ 2,666	$ 2,904

Note 5 - Leases (Details Textua

Note 5 - Leases (Details Textual) $ in Millions	Dec. 31, 2023 USD ($)
Lessee, Operating Lease, Lease Not yet Commenced	$ 138
Lessee, Operating Lease, Lease Not yet Commenced, Term of Contract (Year)	4 years

Note 5 - Leases - Components of

Note 5 - Leases - Components of Lease Expense (Details) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Operating lease cost		$ 171	$ 147	$ 139
Variable lease cost		57	51	59
Short-term lease cost		2	2	2
Total lease cost	[1]	230	200	200
Operating cash outflows from operating leases	[2]	$ 153	$ 116	$ 134
[1]Finance lease costs were not material for the years ended December 31, 2023, 2022 and 2021.[2]Cash payments for operating leases have been classified as operating activities on the consolidated statements of cash flows. Principal and interest payments for finance leases have been classified as financing activities and operating activities, respectively, on the consolidated statements of cash flows, and were not material for the years ended December 31, 2023, 2022 and 2021.

Note 5 - Leases - Supplemental

Note 5 - Leases - Supplemental Balance Sheet (Details) - USD ($) $ in Millions		Dec. 31, 2023	Dec. 31, 2022
Operating lease right-of-use assets		$ 883	$ 842
Operating lease liabilities - current		112	111
Operating lease liabilities - noncurrent		$ 846	$ 795
Weighted-average remaining lease term (in years) (Year)		13 years 7 months 6 days	14 years 3 months 18 days
Weighted-average discount rate		4.40%	4.20%
Other Assets [Member]
Operating lease right-of-use assets	[1]	$ 883	$ 842
Other Current Liabilities [Member]
Operating lease liabilities - current		112	111
Other Liabilities [Member]
Operating lease liabilities - noncurrent		$ 846	$ 795
[1]Finance leases were not material as of December 31, 2023 and 2022.

Note 5 - Leases - Maturities of

Note 5 - Leases - Maturities of Lease Liabilities (Details) $ in Millions	Dec. 31, 2023 USD ($)
2024, operating leases	$ 140	[1]
2025, operating leases	116	[1]
2026, operating leases	104	[1]
2027, operating leases	89	[1]
2028, operating leases	80
After 2027, operating leases	782	[1]
Total operating payments	1,311	[1]
Less: imputed discount	353	[1]
Present value of lease payments	$ 958	[1]
[1]Finance leases were not material as of December 31, 2022.

Note 6 - Income Taxes (Details

Note 6 - Income Taxes (Details Textual) - USD ($) $ in Millions	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Undistributed Earnings of Foreign Subsidiaries	$ 1.4
Unrecognized Tax Benefits that Would Impact Effective Tax Rate	174	$ 169	$ 120
Income Tax Examination, Liability (Refund) Adjustment from Settlement with Taxing Authority	(99)
Luxembourg Inland Revenue [Member] | Maximum [Member]
Deferred Tax Assets, Operating Loss Carryforwards, Foreign	3,100
National Tax Service of Korea [Member]
Income Taxes Receivable, Noncurrent	$ 261	$ 349

Note 6 - Income Taxes - Income

Note 6 - Income Taxes - Income Before Income Taxes (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
U.S. companies	$ 105	$ 1,157	$ 1,282
Non-U.S. companies	711	640	1,144
Income before income taxes	$ 816	$ 1,797	$ 2,426

Note 6 - Income Taxes - Current

Note 6 - Income Taxes - Current and Deferred Amounts of Provision (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Federal	$ (82)	$ (191)	$ (172)
State and municipal	(13)	(16)	(13)
Foreign	(148)	(250)	(290)
Federal	76	52	(97)
State and municipal	7	8	(7)
Foreign	(8)	(14)	88
Provision for income taxes	$ (168)	$ (411)	$ (491)

Note 6 - Income Taxes - Reconci

Note 6 - Income Taxes - Reconciliation of the U.S. Statutory Income Tax Rate to Effective Tax Rate (Details)		12 Months Ended
		Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Statutory U.S. federal income tax rate		21%	21%	21%
State income tax (benefit) provision, net of federal effect		(0.30%)	0.70%	1%
Tax credits		(6.90%)	(3.30%)	(2.60%)
Non-Taxable Items		(4.00%)
Foreign derived intangible income		(2.30%)	(2.70%)	(1.30%)
Stock compensation		(2.10%)	(0.80%)	(1.50%)
Remeasurement of deferred tax assets and liabilities		(0.30%)	(0.10%)
Differential arising from foreign earnings (1)	[1]	0.30%	2.20%	2%
Non-deductible Items		4.70%		1.40%
Audit settlements & change in reserve		4.80%	3.70%	1.60%
Valuation allowance		5.70%	2.10%	(0.50%)
Intercompany loan adjustment			0.60%
Global intangible low-taxed income				0.20%
Other items, net			(0.50%)	(1.10%)
Effective tax rate		20.60%	22.90%	20.20%
[1]Includes impact of intercompany asset sales.

Note 6 - Income Taxes - Tax Eff

Note 6 - Income Taxes - Tax Effects of Temporary Differences and Carryforwards of Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Millions		Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Loss and tax credit carryforwards		$ 275	$ 281
Other assets		245	232
Research and development capitalization		362	280
Asset impairments and restructuring reserves		43	41
Postretirement medical and life benefits		103	102
Other accrued liabilities		319	311
Other employee benefits		344	346
Gross deferred tax assets		1,691	1,593
Valuation allowances		(207)	(166)	$ (138)	$ (167)
Total deferred tax assets		1,484	1,427
Intangible and other assets		(117)	(108)
Fixed assets		(223)	(289)
Finance leases		(209)	(200)
Total deferred tax liabilities		(549)	(597)
Net deferred tax assets	[1]	$ 935	$ 830
[1]The Company also has Luxembourg deferred tax asset net operating losses of up to $3.1 billion that have a remote possibility of realization and therefore, are not recognized in the deferred tax table above.

Note 6 - Income Taxes - Net Def

Note 6 - Income Taxes - Net Deferred Tax Assets (Details) - USD ($) $ in Millions		Dec. 31, 2023	Dec. 31, 2022
Deferred tax assets		$ 1,153	$ 1,073
Other liabilities		(218)	(243)
Net deferred tax assets	[1]	$ 935	$ 830
[1]The Company also has Luxembourg deferred tax asset net operating losses of up to $3.1 billion that have a remote possibility of realization and therefore, are not recognized in the deferred tax table above.

Note 6 - Income Taxes - Deferre

Note 6 - Income Taxes - Deferred Tax Assets for Loss and Tax Credit Carryforwards (Details) $ in Millions	Dec. 31, 2023 USD ($)
Net operating losses	$ 274
Tax credits	1
Balance as of December 31, 2023	275
Tax Years 2024 Through 2028 [Member]
Net operating losses	63
Balance as of December 31, 2023	63
Tax Years 2029 Through 2033 [Member]
Net operating losses	38
Tax credits	1
Balance as of December 31, 2023	39
Tax Years 2034 Through 2038 [Member]
Net operating losses	33
Balance as of December 31, 2023	33
Indefinite [Member]
Net operating losses	140
Balance as of December 31, 2023	$ 140

Note 6 - Income Taxes - Defer_2

Note 6 - Income Taxes - Deferred Tax Valuation Allowances (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Balance	$ 166	$ 138	$ 167
Additions	66	81	13
Reductions	(25)	(53)	(42)
Balance	$ 207	$ 166	$ 138

Note 6 - Income Taxes - Recon_2

Note 6 - Income Taxes - Reconciliation of Unrecognized Tax Benefits (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Balance	$ 206	$ 178	$ 131
Additions based on tax positions related to the current year	54	10	54
Additions for tax positions of prior years	127	24	17
Reductions for tax positions of prior years	(3)	(5)	(21)
Settlements and lapse of statute of limitations	(11)	(1)	(3)
Balance	$ 373	$ 206	$ 178

Note 7 - Property, Plant and _3

Note 7 - Property, Plant and Equipment, Net of Accumulated Depreciation (Details Textual) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Precious Metals	$ 3,100	$ 3,400
Depletion	35	27	$ 28
Interest Costs Capitalized	$ 40	$ 48	$ 36

Note 7 - Property, Plant and _4

Note 7 - Property, Plant and Equipment, Net of Accumulated Depreciation - Property, Plant and Equipment, Net of Accumulated Depreciation (Details) - USD ($) $ in Millions		Dec. 31, 2023	Dec. 31, 2022
Property, plant and equipment		$ 29,183	$ 29,518
Accumulated depreciation		(14,553)	(14,147)
Property, plant and equipment, net of accumulated depreciation (2)	[1]	14,630	15,371
Land [Member]
Property, plant and equipment		412	420
Building [Member]
Property, plant and equipment		5,931	5,963
Equipment [Member]
Property, plant and equipment	[2]	20,896	20,800
Construction in Progress [Member]
Property, plant and equipment		$ 1,944	$ 2,335
[1]Approximately $40 million, $48 million and $36 million of interest costs were capitalized as part of property, plant and equipment during the years ended December 31, 2023, 2022 and 2021, respectively.[2]Manufacturing equipment includes certain components of production equipment that are constructed of precious metals. As of December 31, 2023 and 2022, the carrying value of precious metals was $3.1 billion and $3.4 billion, respectively, and significantly lower than the fair market value. Depletion expense for precious metals for the years ended December 31, 2023, 2022 and 2021 was $35 million, $27 million and $28 million, respectively.

Note 8 - Goodwill and Other I_3

Note 8 - Goodwill and Other Intangible Assets (Details Textual) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Goodwill, Gross	$ 8,900	$ 8,900
Goodwill, Impaired, Accumulated Impairment Loss	6,500	6,500
Amortization of Intangible Assets	122	$ 123	$ 129
Finite-Lived Intangible Asset, Expected Amortization, Year One	126
Finite-Lived Intangible Asset, Expected Amortization, Year Two	119
Finite-Lived Intangible Asset, Expected Amortization, Year Three	98
Finite-Lived Intangible Asset, Expected Amortization, Year Four	94
Finite-Lived Intangible Asset, Expected Amortization, Year Five	$ 88

Note 8 - Goodwill and Other I_4

Note 8 - Goodwill and Other Intangible Assets - Carrying Amount of Goodwill (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Balance	$ 2,394	$ 2,421
Acquired goodwill		5
Foreign currency translation adjustment and other	(14)	(32)
Balance	2,380	2,394
Optical Communications [Member]
Balance	905	915
Acquired goodwill		4
Foreign currency translation adjustment and other	(1)	(14)
Balance	904	905
Display Technologies [Member]
Balance	121	125
Foreign currency translation adjustment and other	(2)	(4)
Balance	119	121
Specialty Materials [Member]
Balance	151	150
Acquired goodwill		1
Balance	151	151
Life Science Products [Member]
Balance	606	616
Foreign currency translation adjustment and other	1	(10)
Balance	607	606
Hemlock and Emerging Growth Businesses [Member]
Balance	611	615
Foreign currency translation adjustment and other	(12)	(4)
Balance	$ 599	$ 611

Note 8 - Goodwill and Other I_5

Note 8 - Goodwill and Other Intangible Assets - Other Intangible Assets (Details) - USD ($) $ in Millions		Dec. 31, 2023	Dec. 31, 2022
Other intangible assets, gross		$ 1,957	$ 1,957
Other intangible assets, accumulated amortization		1,052	928
Other intangible assets, net		905	1,029
Patents, Trademarks and Tradenames [Member]
Other intangible assets, gross		493	496
Other intangible assets, accumulated amortization		318	300
Other intangible assets, net		175	196
Customer Lists and Other [Member]
Other intangible assets, gross	[1]	1,464	1,461
Other intangible assets, accumulated amortization	[1]	734	628
Other intangible assets, net	[1]	$ 730	$ 833
[1]Other consists of intangible assets related to developed technologies and intellectual know-how.

Note 9 - Other Assets and Oth_3

Note 9 - Other Assets and Other Liabilities - Other Assets (Details) - USD ($) $ in Millions	Dec. 31, 2023	Dec. 31, 2022
Derivative instruments (Note 13)	$ 501	$ 454
Other current assets	694	703
Other current assets	1,195	1,157
Derivative instruments (Note 13)	130	224
South Korean tax deposits (Note 6)	261	349
Operating leases (Note 5)	883	842
Investments	414	360
Other non-current assets	532	404
Other assets	$ 2,220	$ 2,179

Note 9 - Other Assets and Oth_4

Note 9 - Other Assets and Other Liabilities - Other Liabilities (Details) - USD ($) $ in Millions	Dec. 31, 2023	Dec. 31, 2022
Wages and employee benefits	$ 609	$ 727
Income taxes (Note 6)	69	127
Derivative instruments (Note 13)	66	174
Deferred revenue (Note 3)	181	144
Customer deposits (Note 3)	148	132
Share repurchase liability (Note 14)		506
Operating lease liabilities - current	112	111
Other current liabilities	1,348	1,226
Other accrued liabilities	2,533	3,147
Defined benefit pension plan liabilities (Note 11)	721	668
Derivative instruments (Note 13)	31	17
Deferred revenue (Note 3)	679	725
Customer deposits (Note 3)	1,083	1,137
Deferred tax liabilities (Note 6)	218	243
Long-term operating leases (Note 5)	846	795
Other non-current liabilities	1,131	1,370
Other liabilities	$ 4,709	$ 4,955

Note 10 - Debt (Details Textual

Note 10 - Debt (Details Textual) $ in Thousands, € in Millions, ¥ in Millions, ¥ in Millions		12 Months Ended
	May 15, 2023 USD ($)	Dec. 31, 2023 USD ($)	Dec. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)	Dec. 31, 2023 JPY (¥)	Dec. 31, 2023 CNY (¥)	May 15, 2023 EUR (€)	Dec. 31, 2022 JPY (¥)
Long-Term Debt and Lease Obligation		$ 7,206,000	$ 6,687,000
Proceeds from Issuance of Long-Term Debt		918,000
Debentures Due in 2022 [Member]
Debt Instrument, Interest Rate, Stated Percentage				2.90%
Extinguishment of Debt, Amount				$ 375,000
Payment for Debt Extinguishment or Debt Prepayment Cost				10,000
Gain (Loss) on Extinguishment of Debt, Total				$ 11,000
Debentures Due in 2023 [Member]
Debt Instrument, Interest Rate, Stated Percentage				3.70%
Extinguishment of Debt, Amount				$ 250,000
Payment for Debt Extinguishment or Debt Prepayment Cost				19,000
Gain (Loss) on Extinguishment of Debt, Total				$ 20,000
Amended Credit Facility [Member]
Short-Term Debt		0	0
Incremental Liquidity Facility [Member]
Line Of Credit Facility, Amount Terminated | ¥					¥ 25			¥ 25,000
Unsecured Variable Rate Loan Facilities [Member]
Long-Term Line of Credit		293,000	$ 352,000
Debt Instrument, Unused Borrowing Capacity, Amount		$ 110,000				¥ 779
Unsecured Variable Rate Loan Facilities [Member] | Minimum [Member]
Debt Instrument, Interest Rate, Stated Percentage		3.20%	3.30%		3.20%	3.20%		3.30%
Unsecured Variable Rate Loan Facilities [Member] | Maximum [Member]
Debt Instrument, Interest Rate, Stated Percentage		4.10%	4.30%		4.10%	4.10%		4.30%
The 2027 and 2028 Notes payable [Member]
Debt Instrument, Repurchase Amount		$ 100,000			¥ 14,700
The 2027 Notes [Member]
Debt Instrument, Interest Rate, Stated Percentage		0.992%			0.992%	0.992%
Debt Instrument, Face Amount | ¥					¥ 9,800
The 2028 Notes [Member]
Debt Instrument, Interest Rate, Stated Percentage		1.043%			1.043%	1.043%
Debt Instrument, Face Amount | ¥					¥ 4,900
The 2026 Notes [Member]
Debt Instrument, Interest Rate, Stated Percentage							3.875%
Debt Instrument, Face Amount | €							€ 300
The 2031 Notes [Member]
Debt Instrument, Interest Rate, Stated Percentage							4.125%
Debt Instrument, Face Amount | €							€ 550
Notes 2026 and Notes 2031 [Member]
Proceeds from Issuance of Long-Term Debt	$ 918,000
Long-Term Debt		$ 932,000
Revolving Credit Facility [Member] | Amended Credit Facility [Member]
Line of Credit Facility, Maximum Borrowing Capacity			$ 1,500,000
Commercial Paper [Member]
Long-Term Line of Credit		0	0
Fair Value, Inputs, Level 2 [Member]
Long-Term Debt, Fair Value		$ 7,000,000	$ 6,100,000

Note 10 - Debt - Long-term Debt

Note 10 - Debt - Long-term Debt (Details) - USD ($) $ in Millions	Dec. 31, 2023	Dec. 31, 2022
Total long-term debt, including current portion	$ 7,526	$ 6,911
Less current portion of long-term debt	320	224
Long-term debt	7,206	6,687
Medium-Term Notes, Average Rate 0.70%, Due Through 2024 [Member]
Debentures	149	45
Debentures, 6.85%, Due 2029 [Member]
Debentures	157	159
Debentures, Callable, 7.25%, Due 2036 [Member]
Debentures	249	249
Debentures, 4.70%, Due 2037 [Member]
Debentures	296	296
Debentures, 5.75%, Due 2040 [Member]
Debentures	396	396
Debentures, 4.75%, Due 2042 [Member]
Debentures	497	496
Debentures, 5.35%, due 2048 [Member]
Debentures	545	544
Debentures 3.9 Due 2049 [Member]
Debentures	395	395
Debentures, 4.375%, due 2057 [Member]
Debentures	743	743
Debentures, 5.85%, due 2068 [Member]
Debentures	297	297
Debentures 5.45 Due 2079 [Member]
Debentures	1,086	1,086
Yen-denominated Debentures, 0.698%, due 2024 [Member]
Debentures		160
Yen-denominated Debentures, 0.722%, due 2025 [Member]
Debentures	71	76
Yen-denominated Debentures, .992%, due 2027 [Member]
Debentures	263	358
Yen-denominated Debentures, 1.043%, due 2028 [Member]
Debentures	181	232
Yen-denominated Debentures, 1.219%, due 2030 [Member]
Debentures	177	190
Yen Denominated Debentures, 1.153 Due 2031 [Member]
Debentures	221	237
Yen-denominated Debentures, 1.583%, due 2037 [Member]
Debentures	71	76
Yen Denominated Debentures, 1.513 Due 2039 [Member]
Debentures	41	45
Euro-denominated notes, 3.875%, due 2026 [Member]
Debentures	330
Euro-denominated notes, 4.125%, due 2031 [Member]
Debentures	602
Financing Leases, Average Discount Rate 4.6%, Due Through 2043 [Member]
Debentures	195	190
Other, Average Rate 3.93%, Due Through 2043 [Member]
Debentures	$ 564	$ 641

Note 10 - Debt - Long-term De_2

Note 10 - Debt - Long-term Debt (Details) (Parentheticals)	Dec. 31, 2023	Dec. 31, 2022
Medium-Term Notes, Average Rate 0.70%, Due Through 2024 [Member]
Interest rate on debt	0.70%	0.70%
Debentures, 6.85%, Due 2029 [Member]
Interest rate on debt	6.85%	6.85%
Debentures, Callable, 7.25%, Due 2036 [Member]
Interest rate on debt	7.25%	7.25%
Debentures, 4.70%, Due 2037 [Member]
Interest rate on debt	4.70%	4.70%
Debentures, 5.75%, Due 2040 [Member]
Interest rate on debt	5.75%	5.75%
Debentures, 4.75%, Due 2042 [Member]
Interest rate on debt	4.75%	4.75%
Debentures, 5.35%, due 2048 [Member]
Interest rate on debt	5.35%	5.35%
Debentures 3.9 Due 2049 [Member]
Interest rate on debt	3.90%	3.90%
Debentures, 4.375%, due 2057 [Member]
Interest rate on debt	4.375%	4.375%
Debentures, 5.85%, due 2068 [Member]
Interest rate on debt	5.85%	5.85%
Debentures 5.45 Due 2079 [Member]
Interest rate on debt	5.45%	5.45%
Yen-denominated Debentures, 0.698%, due 2024 [Member]
Interest rate on debt	0.698%	0.698%
Yen-denominated Debentures, 0.722%, due 2025 [Member]
Interest rate on debt	0.722%	0.722%
Yen-denominated Debentures, .992%, due 2027 [Member]
Interest rate on debt	0.992%	0.992%
Yen-denominated Debentures, 1.043%, due 2028 [Member]
Interest rate on debt	1.043%	1.043%
Yen-denominated Debentures, 1.219%, due 2030 [Member]
Interest rate on debt	1.219%	1.219%
Yen Denominated Debentures, 1.153 Due 2031 [Member]
Interest rate on debt	1.153%	1.153%
Yen-denominated Debentures, 1.583%, due 2037 [Member]
Interest rate on debt	1.583%	1.583%
Yen Denominated Debentures, 1.513 Due 2039 [Member]
Interest rate on debt	1.513%	1.513%
Euro-denominated notes, 3.875%, due 2026 [Member]
Interest rate on debt	3.875%	3.875%
Euro-denominated notes, 4.125%, due 2031 [Member]
Interest rate on debt	4.125%	4.125%
Financing Leases, Average Discount Rate 4.6%, Due Through 2043 [Member]
Interest rate on debt	4.60%	4.60%
Other, Average Rate 3.93%, Due Through 2043 [Member]
Interest rate on debt	3.85%	3.85%

Note 10 - Debt - Debt Maturitie

Note 10 - Debt - Debt Maturities (Details) $ in Millions	Dec. 31, 2023 USD ($)	[1]
Long-term debt, due 2024	$ 320
Long-term debt, due 2025	188
Long-term debt, due 2026	397
Long-term debt, due 2027	312
Long-term debt, due 2028	210
Long-term debt, due Thereafter	$ 6,203
[1]Excludes interest rate swap gains, bond discounts and deferred expenses.

Note 11 - Employee Retirement_3

Note 11 - Employee Retirement Plans (Details Textual) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Liquidity Risk Long-term Investments In Private Equity and Real Estate		1%
Defined Contribution Plan, Cost	$ 118,000	$ 117,000	$ 98,000
Defined Benefit Plan, Equity Securities [Member]
Defined Benefit Plan, Plan Assets, Target Allocation, Percentage	50%
Bond Investments [Member]
Defined Benefit Plan, Plan Assets, Target Allocation, Percentage	50%
Defined Benefit Plan, Plan Assets, Investment within Plan Asset Category, Percentage	42%
Minimum [Member]
Percent To Yield	10%
Maximum [Member]
Percent To Yield	40%
Pension Plan [Member]
Defined Benefit Plan, Benefit Obligation, Actuarial Gain (Loss)	$ (100,000)	1,100,000
Defined Benefit Plan, Accumulated Benefit Obligation	3,700,000	3,500,000
Pension Plan [Member] | UNITED STATES
Defined Benefit Plan Voluntary Contributions by Employer	0	0
Defined Benefit Plan, Plan Assets, Contributions by Employer	$ 18,000	$ 15,000
Weighted Average Discount Rate, Rounded Amount	0.34%	2.63%
Pension Plan [Member] | Foreign Plan [Member]
Defined Benefit Plan Voluntary Contributions by Employer	$ 25,000	$ 0
Defined Benefit Plan, Expected Future Employer Contributions, Next Fiscal Year	11,000
Defined Benefit Plan, Plan Assets, Contributions by Employer	$ 32,000	$ 8,000
Weighted Average Discount Rate, Rounded Amount	0.16%	1.26%
Other Postretirement Benefits Plan [Member]
Defined Benefit Plan, Plan Assets, Contributions by Employer	$ 26,000	$ 31,000
Cap On Contribution Toward Future Retiree Medical Coverage	120%
Percentage Of Cost To Be Paid By Employees For Retiree Medical Upon Retirement	100%
Defined Benefit Plan, Benefit Obligation, Actuarial Gain (Loss)	$ 7,000	$ 209,000
Weighted Average Discount Rate, Rounded Amount	34%	2.59%
Other Postretirement Benefits Plan [Member] | UNITED STATES
Defined Benefit Plan, Plan Assets, Contributions by Employer	$ 0	$ 0

Note 11 - Employee Retirement_4

Note 11 - Employee Retirement Plans - Benefit Obligation and Funded Status (Details) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Pension Plan [Member] | UNITED STATES
Benefit obligation at beginning of year		$ 3,182,000	$ 4,075,000
Service cost		80,000	105,000	$ 102,000
Interest cost		168,000	98,000	78,000
Plan amendments			28,000
Actuarial gain		89,000	(925,000)
Other (1)	[1]	14,000	3,000
Benefits paid		(222,000)	(202,000)
Benefit obligation at end of year		3,311,000	3,182,000	4,075,000
Balance		2,683,000	3,598,000
Actual gain (loss) on plan assets		281,000	(728,000)
Defined Benefit Plan, Plan Assets, Contributions by Employer		18,000	15,000
Benefits paid		(222,000)	(202,000)
Balance		2,760,000	2,683,000	3,598,000
Fair value of plan assets		2,760,000	2,683,000	3,598,000
Benefit obligations		3,311,000	3,182,000	4,075,000
Funded status of plans		(551,000)	(499,000)
Current liability		(17,000)	(18,000)
Noncurrent liability		(534,000)	(481,000)
Recognized liability		(551,000)	(499,000)
Net actuarial loss (gain)		259,000	259,000
Prior service cost (credit)		34,000	44,000
Amounts recognized at end of year		293,000	303,000
Pension Plan [Member] | Foreign Plan [Member]
Benefit obligation at beginning of year		549,000	736,000
Service cost		18,000	22,000	25,000
Interest cost		20,000	11,000	10,000
Actuarial gain		9,000	(137,000)
Other (1)	[1]	(3,000)	(1,000)
Benefits paid		(25,000)	(21,000)
Foreign currency translation		10,000	(61,000)
Benefit obligation at end of year		578,000	549,000	736,000
Balance		381,000	584,000
Actual gain (loss) on plan assets		10,000	(139,000)
Defined Benefit Plan, Plan Assets, Contributions by Employer		32,000	8,000
Benefits paid		(25,000)	(21,000)
Foreign currency translation		7,000	(51,000)
Balance		405,000	381,000	584,000
Fair value of plan assets		405,000	381,000	584,000
Benefit obligations		578,000	549,000	736,000
Funded status of plans		(173,000)	(168,000)
Noncurrent asset		24,000	26,000
Current liability		(8,000)	(7,000)
Noncurrent liability		(189,000)	(187,000)
Recognized liability		(173,000)	(168,000)
Net actuarial loss (gain)		10,000	(2,000)
Prior service cost (credit)			(1,000)
Amounts recognized at end of year		10,000	(3,000)
Other Postretirement Benefits Plan [Member]
Benefit obligation at beginning of year		434,000	654,000
Service cost		5,000	9,000	10,000
Interest cost		23,000	15,000	15,000
Plan participants’ contributions		9,000	7,000
Actuarial gain		(7,000)	(209,000)
Other (1)	[1]	1,000
Benefits paid		(40,000)	(42,000)
Benefit obligation at end of year		425,000	434,000	654,000
Balance		5,000	9,000
Defined Benefit Plan, Plan Assets, Contributions by Employer		26,000	31,000
Plan participants’ contributions		9,000	7,000
Benefits paid		(40,000)	(42,000)
Balance		0	5,000	9,000
Fair value of plan assets		0	5,000	9,000
Benefit obligations		425,000	434,000	$ 654,000
Funded status of plans		(425,000)	(429,000)
Current liability		(27,000)	(22,000)
Noncurrent liability		(398,000)	(407,000)
Recognized liability		(425,000)	(429,000)
Net actuarial loss (gain)		(212,000)	(226,000)
Prior service cost (credit)		(10,000)	(15,000)
Amounts recognized at end of year		(222,000)	(241,000)
Other Postretirement Benefits Plan [Member] | UNITED STATES
Defined Benefit Plan, Plan Assets, Contributions by Employer		$ 0	$ 0
[1]Other consists of domestic plan special termination benefits charge and curtailment and international plan settlements. Refer to Note 2 (Restructuring, Impairment and Other Charges and Credits) in the notes to the consolidated financial statements for more information.

Note 11 - Employee Retirement_5

Note 11 - Employee Retirement Plans - Benefit Obligations in Excess of Fair Value of Plan Assets (Details) - USD ($) $ in Millions	Dec. 31, 2023	Dec. 31, 2022
Projected benefit obligation	$ 3,540	$ 3,406
Fair value of plan assets	2,791	2,712
Accumulated benefit obligation	3,376	3,238
Fair value of plan assets	$ 2,791	$ 2,712

Note 11 - Employee Retirement_6

Note 11 - Employee Retirement Plans - Net Periodic Benefit Expense (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Pension Plan [Member] | UNITED STATES
Service cost	$ 80	$ 105	$ 102
Interest cost	168	98	78
Expected return on plan assets	(176)	(210)	(209)
Amortization of prior service cost (credit)	6	6	4
Recognition of actuarial (gain) loss	(16)	29	10
Total net periodic benefit expense (income)	62	28	(15)
Curtailment charge	3
Special termination benefit charge	15	2
Total expense (income)	80	30	(15)
Curtailment effects	(4)
Current year actuarial (loss) gain	(16)	16	(105)
Recognition of actuarial gain (loss)	16	(29)	(10)
Current year prior service cost		28
Amortization of prior service (cost) credit	(6)	(6)	(4)
Total recognized in other comprehensive (loss) income	(10)	9	(119)
Pension Plan [Member] | Foreign Plan [Member]
Service cost	18	22	25
Interest cost	20	11	10
Expected return on plan assets	(13)	(9)	(7)
Amortization of prior service cost (credit)		(1)	(1)
Recognition of actuarial (gain) loss	1	8	1
Total net periodic benefit expense (income)	26	31	28
Total expense (income)	26	33	28
Settlements		11
Current year actuarial (loss) gain	14	(27)	(7)
Recognition of actuarial gain (loss)	1	20	(1)
Amortization of prior service (cost) credit		1	1
Total recognized in other comprehensive (loss) income	15	5	(7)
Other Postretirement Benefits Plan [Member]
Service cost	5	9	10
Interest cost	23	15	15
Amortization of prior service cost (credit)	(5)	(5)	(6)
Amortization of actuarial (gain) loss	(22)	(5)	2
Total net periodic benefit expense (income)	1	14	21
Special termination benefit charge	1
Total expense (income)	2	14	21
Current year actuarial (loss) gain	5	(209)	(105)
Amortization of actuarial gain (loss)	22	5	(2)
Amortization of prior service (cost) credit	(8)	5	6
Total recognized in other comprehensive (loss) income	$ 19	$ (199)	$ (101)

Note 11 - Employee Retirement_7

Note 11 - Employee Retirement Plans - Weighted-average Assumptions Used to Determine Benefit Obligations and Net Periodic Benefit Cost (Details)	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Pension Plan [Member] | UNITED STATES
Discount rate	5.16%	5.50%	2.87%
Rate of compensation increase	3.97%	3.48%	3.50%
Cash balance crediting rate	4.22%	4.14%	3.86%
Employee contributions crediting rate	5.25%	4.62%	1.57%
Discount rate	5.50%	2.88%	2.50%
Expected return on plan assets	6.75%	6%	6%
Rate of compensation increase	3.87%	3.50%	4.16%
Cash balance crediting rate	3.86%	3.86%	3.84%
Employee contributions crediting rate	4.62%	1.57%	0.62%
Pension Plan [Member] | Foreign Plan [Member]
Discount rate	2.30%	2.46%	1.20%
Rate of compensation increase	3.74%	3.73%	3.63%
Cash balance crediting rate	0.82%	0.82%	0.91%
Discount rate	2.46%	1.20%	1.02%
Expected return on plan assets	3.85%	1.64%	1.26%
Rate of compensation increase	3.73%	3.63%	3.55%
Cash balance crediting rate	0.82%	0.91%	0.94%
Other Postretirement Benefits Plan [Member]
Discount rate	5.24%	5.58%	2.99%
Discount rate	5.58%	2.99%	2.69%

Note 11 - Employee Retirement_8

Note 11 - Employee Retirement Plans - Assumed Health Care Trend Rates (Details)	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Ultimate health care trend rate	5%	5%
Year that the rate reaches the ultimate trend rate	2031	2031
Retire Before Age 65 [Member]
Health care cost trend rate assumed for next year (pre-65 / post-65 retirees)	6.75%	7%
Retire After Age 65 [Member]
Health care cost trend rate assumed for next year (pre-65 / post-65 retirees)	14.75%	4.25%

Note 11 - Employee Retirement_9

Note 11 - Employee Retirement Plans - Domestic Defined Benefit Plan Assets (Details) - UNITED STATES - Pension Plan and Other Postretirement Benefits Plan [Member] - USD ($) $ in Millions		Dec. 31, 2023	Dec. 31, 2022
Fair value of plan assets		$ 2,760	$ 2,688
Fair Value, Inputs, Level 1 [Member]
Fair value of plan assets		552	491
Fair Value, Inputs, Level 2 [Member]
Fair value of plan assets		2,205	2,166
Fair Value, Inputs, Level 3 [Member]
Fair value of plan assets		3	31
Defined Benefit Plan, Equity Securities, US [Member]
Fair value of plan assets		1,260	1,168
Defined Benefit Plan, Equity Securities, US [Member] | Fair Value, Inputs, Level 1 [Member]
Fair value of plan assets		9	63
Defined Benefit Plan, Equity Securities, US [Member] | Fair Value, Inputs, Level 2 [Member]
Fair value of plan assets		1,251	1,105
US Treasury Securities [Member]
Fair value of plan assets		204	400
US Treasury Securities [Member] | Fair Value, Inputs, Level 1 [Member]
Fair value of plan assets		204	400
Debt Security, Corporate, US [Member]
Fair value of plan assets		946	1,060
Debt Security, Corporate, US [Member] | Fair Value, Inputs, Level 2 [Member]
Fair value of plan assets		946	1,060
Preferred Stock [Member]
Fair value of plan assets		1	1
Preferred Stock [Member] | Fair Value, Inputs, Level 2 [Member]
Fair value of plan assets		1	1
Private Equity Funds [Member]
Fair value of plan assets	[1]		24
Private Equity Funds [Member] | Fair Value, Inputs, Level 3 [Member]
Fair value of plan assets	[1]		24
Defined Benefit Plan, Real Estate [Member]
Fair value of plan assets	[2]	3	7
Defined Benefit Plan, Real Estate [Member] | Fair Value, Inputs, Level 3 [Member]
Fair value of plan assets	[2]	3	7
Defined Benefit Plan, Cash and Cash Equivalents [Member]
Fair value of plan assets		346	28
Defined Benefit Plan, Cash and Cash Equivalents [Member] | Fair Value, Inputs, Level 1 [Member]
Fair value of plan assets		$ 339	$ 28
[1]This category includes venture capital, leverage buyouts and distressed debt limited partnerships invested primarily in U.S. companies. The inputs are valued by discounted cash flow analysis and comparable sale analysis.[2]This category includes industrial, office, apartments, hotels, infrastructure and retail investments which are limited partnerships predominately in the U.S. The inputs are valued by discounted cash flow analysis; comparable sale analysis and periodic external appraisals.

Note 11 - Employee Retiremen_10

Note 11 - Employee Retirement Plans - International Defined Benefit Plan Assets (Details) - Pension Plan [Member] - Foreign Plan [Member] - USD ($) $ in Millions	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Fair value of plan assets	$ 405	$ 381	$ 584
Fair Value, Inputs, Level 1 [Member]
Fair value of plan assets	155	136
Fair Value, Inputs, Level 2 [Member]
Fair value of plan assets	0	0
Fair Value, Inputs, Level 3 [Member]
Fair value of plan assets	250	245
Debt Security, Corporate, Non-US [Member]
Fair value of plan assets	96	87
Debt Security, Corporate, Non-US [Member] | Fair Value, Inputs, Level 1 [Member]
Fair value of plan assets	96	87
Debt Security, Corporate, Non-US [Member] | Fair Value, Inputs, Level 2 [Member]
Fair value of plan assets
Insurance Contracts [Member]
Fair value of plan assets	195	192
Insurance Contracts [Member] | Fair Value, Inputs, Level 3 [Member]
Fair value of plan assets	195	192	2
Collateralized Mortgage-Backed Securities [Member]
Fair value of plan assets	43	42
Collateralized Mortgage-Backed Securities [Member] | Fair Value, Inputs, Level 3 [Member]
Fair value of plan assets	43	42	$ 22
Defined Benefit Plan, Cash and Cash Equivalents [Member]
Fair value of plan assets	59	48
Defined Benefit Plan, Cash and Cash Equivalents [Member] | Fair Value, Inputs, Level 1 [Member]
Fair value of plan assets	59	48
Other [Member]
Fair value of plan assets	12
Other [Member] | Fair Value, Inputs, Level 3 [Member]
Fair value of plan assets	$ 12	$ 11

Note 11 - Employee Retiremen_11

Note 11 - Employee Retirement Plans - Change in Fair Value of Level 3 Assets for Defined Benefit Plan (Details) - Pension Plan [Member] - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Foreign Plan [Member]
Balance	$ 381	$ 584
Balance	405	381
Collateralized Mortgage-Backed Securities [Member] | Foreign Plan [Member]
Balance	42
Balance	43	42
Insurance Contracts [Member] | Foreign Plan [Member]
Balance	192
Balance	195	192
Other [Member] | Foreign Plan [Member]
Balance	12
Fair Value, Inputs, Level 3 [Member] | Foreign Plan [Member]
Balance	245
Balance	250	245
Fair Value, Inputs, Level 3 [Member] | Private Equity Funds [Member]
Balance	24	41
Actual return on plan assets relating to assets still held at the reporting date	(12)	(8)
Asset (sales) purchases	(12)	(9)
Balance		24
Fair Value, Inputs, Level 3 [Member] | Defined Benefit Plan, Real Estate [Member]
Balance	7	10
Asset (sales) purchases	(4)	(3)
Balance	3	7
Fair Value, Inputs, Level 3 [Member] | Collateralized Mortgage-Backed Securities [Member] | Foreign Plan [Member]
Balance	42	22
Actual return on plan assets relating to assets still held at the reporting date	1	1
Actual return on plan assets relating to assets sold during the reporting period		1
Asset (sales) purchases		18
Balance	43	42
Fair Value, Inputs, Level 3 [Member] | Insurance Contracts [Member] | Foreign Plan [Member]
Balance	192	2
Asset (sales) purchases	3	190
Balance	195	192
Fair Value, Inputs, Level 3 [Member] | Other [Member] | Foreign Plan [Member]
Balance	11
Asset (sales) purchases	1	11
Balance	$ 12	$ 11

Note 11 - Employee Retiremen_12

Note 11 - Employee Retirement Plans - Estimated Future Benefit Payments and Gross Medicare to be Receive (Details) $ in Millions	Dec. 31, 2023 USD ($)
Pension Plan [Member] | UNITED STATES
2024	$ 260
2025	257
2026	260
2027	267
2028	267
2029-2033	1,401
Pension Plan [Member] | Foreign Plan [Member]
2024	30
2025	38
2026	39
2027	39
2028	44
2029-2033	237
Other Postretirement Benefits Plan [Member]
2024	28
2025	28
2026	29
2027	29
2028	29
2029-2033	$ 148

Note 12 - Commitments, Contin_3

Note 12 - Commitments, Contingencies and Guarantees (Details Textual) $ in Millions		12 Months Ended
	May 31, 2016	Dec. 31, 2023 USD ($)	Dec. 31, 2022 USD ($)	Jun. 01, 2016
Environmental Litigation [Member]
Number of Hazardous Waste Sites		19
Accrual for Environmental Loss Contingencies		$ 88	$ 109
Dow Corning Corporation [Member] | Dow Corning Chapter 11 Related Matters [Member]
Equity Method Investment, Ownership Percentage				50%
Indemnification of Excess Liability	50%
Dow Corning Corporation [Member] | Dow Corning Environmental Claims [Member]
Indemnification of Excess Liability		50%

Note 12 - Commitments, Contin_4

Note 12 - Commitments, Contingencies and Guarantees - Amounts of Obligations (Details) - Purchase Obligations [Member] $ in Millions	Dec. 31, 2023 USD ($)
Less Than 1 Year [Member]
Contractual obligation payments due	$ 264
One To Three Years [Member]
Contractual obligation payments due	207
Three To Five Years [Member]
Contractual obligation payments due	99
Five Years and Thereafter [Member]
Contractual obligation payments due	$ 434

Note 13 - Financial Instrumen_3

Note 13 - Financial Instruments (Details Textual) € in Millions, $ in Millions			12 Months Ended
		May 15, 2023 EUR (€)	Dec. 31, 2023 USD ($) ozt	Dec. 31, 2022 USD ($) ozt	Dec. 31, 2023 EUR (€)
Derivative, Notional Amount	[1]		$ 7,271	$ 10,193
AOCI, Cash Flow Hedge, Cumulative Gain (Loss), after Tax			54	19
Leased Precious Metal Pools [Member]
Hedged Asset, Fair Value Hedge, Cumulative Increase (Decrease)			(239)	(95)
Leased Precious Metal Pools [Member] | Property and Equipment, Net [Member]
Derivative Instruments in Hedges, Assets, at Fair Value			90	$ 278
Net Investment Hedging [Member]
Non-derivative, Subject to Master Netting Arrangement, before Offset			932		€ 850
Notional Amount of Nonderivative Instruments | €		€ 850
Cash Flow Hedging [Member] | Foreign Exchange Forward [Member] | Designated as Hedging Instrument [Member]
Derivative, Notional Amount			$ 241
Derivative, Nonmonetary Notional Amount, Mass (Troy Ounce) | ozt			20,160	23,152
Cash Flow Hedging [Member] | New Investment Hedges [Member]
Derivative, Notional Amount				$ 419
Cash Flow Hedging [Member] | Lease Precious Metals [Member] | Designated as Hedging Instrument [Member]
Derivative, Notional Amount			$ 229	$ 69
[1]The amounts above do not include €850 million of euro-denominated debt ($932 million equivalent as of December 31, 2023), which is a non-derivative financial instrument designated as a net investment hedge.

Note 13 - Financial Instrumen_4

Note 13 - Financial Instruments - Summary of Notional Amounts and Respective Fair Values of Derivative Financial Instruments (Details) - USD ($) $ in Millions		Dec. 31, 2023	Dec. 31, 2022
Notional amount	[1]	$ 7,271	$ 10,193
Asset derivatives, fair value	[1],[2]	631	678
Liability derivatives, fair value	[1],[2]	(97)	(191)
Not Designated as Hedging Instrument [Member]
Notional amount		5,042	7,543
Foreign Exchange Contract [Member] | Designated as Hedging Instrument [Member]
Notional amount	[3]	241	419
Foreign Exchange Contract [Member] | Designated as Hedging Instrument [Member] | Other Current Assets [Member]
Asset derivatives, fair value	[2]	287	104
Foreign Exchange Contract [Member] | Designated as Hedging Instrument [Member] | Other Accrued Liabilities [Member]
Liability derivatives, fair value	[2]		(1)
Foreign Exchange Contract [Member] | Not Designated as Hedging Instrument [Member]
Notional amount		1,988	2,231
Foreign Exchange Contract [Member] | Not Designated as Hedging Instrument [Member] | Other Current Assets [Member]
Asset derivatives, fair value	[2]	20	44
Foreign Exchange Contract [Member] | Not Designated as Hedging Instrument [Member] | Other Accrued Liabilities [Member]
Liability derivatives, fair value	[2]	(17)	(49)
Translated Earnings Contracts [Member] | Not Designated as Hedging Instrument [Member]
Notional amount		5,042	7,543
Translated Earnings Contracts [Member] | Not Designated as Hedging Instrument [Member] | Other Current Assets [Member]
Asset derivatives, fair value	[2]	324	530
Translated Earnings Contracts [Member] | Not Designated as Hedging Instrument [Member] | Other Accrued Liabilities [Member]
Liability derivatives, fair value	[2]	$ (80)	$ (141)
[1]The amounts above do not include €850 million of euro-denominated debt ($932 million equivalent as of December 31, 2023), which is a non-derivative financial instrument designated as a net investment hedge.[2]All of the Company’s derivative contracts are measured at fair value are classified as Level 2 within the fair value hierarchy. Derivative assets are presented in Other current assets or Other assets. Derivative liabilities are presented in Other current liabilities or Other liabilities. Refer to Note 9 (Other Assets and Other Liabilities) for additional information.[3]As of December 31, 2023, derivatives designated as hedging instruments include foreign exchange cash flow hedges with gross notional amounts of $241 million and fair value hedges of leased precious metals with a gross notional amount of 20,160 troy ounces. As of December 31, 2022, derivatives designated as hedging instruments include foreign exchange cash flow hedges with gross notional amounts of $419 million and fair value hedges of leased precious metals with a gross notional amount of 23,152 troy ounces. Fair value assets include designated derivatives pertaining to precious metals lease contracts in the amounts of $229 million and $69 million as of December 31, 2023 and 2022, respectively.

Note 13 - Financial Instrumen_5

Note 13 - Financial Instruments - Undesignated Hedges (Details) - USD ($) $ in Millions		Dec. 31, 2023	Dec. 31, 2022
Gross notional value for translated earning contracts	[1]	$ 7,271	$ 10,193
Not Designated as Hedging Instrument [Member]
Gross notional value for translated earning contracts		5,042	7,543
Not Designated as Hedging Instrument [Member] | Average Rate Forward Contracts, Chinese Yuan-Denomination [Member]
Gross notional value for translated earning contracts		684	479
Not Designated as Hedging Instrument [Member] | Average Rate Forward Contracts, Japanese Yen-denominated [Member]
Gross notional value for translated earning contracts		463	93
Not Designated as Hedging Instrument [Member] | Average Rate Forward Contracts, South Korean Won-denominated [Member]
Gross notional value for translated earning contracts		1,609	2,117
Not Designated as Hedging Instrument [Member] | Average Rate Forward Contracts, Other Foreign Currencies [Member]
Gross notional value for translated earning contracts	[2]	198	237
Not Designated as Hedging Instrument [Member] | Options Contracts, Japanese Yen-denominated [Member]
Gross notional value for translated earning contracts	[3]	$ 2,088	$ 4,617
[1]The amounts above do not include €850 million of euro-denominated debt ($932 million equivalent as of December 31, 2023), which is a non-derivative financial instrument designated as a net investment hedge.[2]Denominational currencies for average rate forward contracts include the New Taiwan dollar, British pound and euro.[3]Japanese yen-denominated option contracts include purchased put and call options and zero-cost collars. With respect to the zero-cost collars, the gross notional amount includes the value of the put and call options. However, due to the nature of zero-cost collars, only the put or the call option can be exercised at maturity.

Note 13 - Financial Instrumen_6

Note 13 - Financial Instruments - Summary of Effect of Designated Derivative Financial Instruments on Consolidated Financial Statements (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Gain (loss) recognized in other comprehensive income	$ 81	$ 52	$ 47
Consolidated net sales	12,588	14,189	14,082
Cost of sales	8,657	9,683	9,019
Other income, net	56	285	249
Net income attributable to Corning Incorporated	581	1,316	1,906
Reclassification out of Accumulated Other Comprehensive Income [Member]
Consolidated net sales		52	14
Cost of sales	49	32	39
Other income, net	(3)	(3)	(1)
Net income attributable to Corning Incorporated	46	81	52
Foreign Exchange Contract [Member]
Gain (loss) recognized in other comprehensive income	$ 81	$ 52	$ 47

Note 13 - Financial Instrumen_7

Note 13 - Financial Instruments - Summary of Effect of Undesignated Derivative Financial Instruments on Consolidated Financial Statements (Details) - Not Designated as Hedging Instrument [Member] - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Gain (loss) recognized in income		$ 187	$ 397	$ 392
Foreign Exchange Contract [Member] | Other (Expense) Income, Net [Member]
Gain (loss) recognized in income	[1]	26	46	38
Translated Earnings Contracts [Member] | Translated Earnings Contract (Loss) Gain, Net [Member]
Gain (loss) recognized in income		$ 161	$ 351	$ 354
[1]A loss of $14 million was reclassified from accumulated other comprehensive loss into other expense, net, resulting from the de-designation of certain cash flow hedges during the year ended December 31, 2020.

Note 14 - Shareholders' Equit_2

Note 14 - Shareholders' Equity (Details Textual) - USD ($) $ / shares in Units, $ in Millions						12 Months Ended			36 Months Ended
		Feb. 07, 2024	Apr. 08, 2023	Apr. 08, 2022	Apr. 08, 2021	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2023	Jan. 16, 2021	Dec. 31, 2020	Dec. 31, 2019
Common Stock, Dividends, Per Share, Declared (in dollars per share)						$ 1.12	$ 1.08	$ 0.96
Payments for Repurchase of Common Stock							$ 221	$ 274
Preferred Stock Redemption Premium	[1],[2]							803
Other Comprehensive Income (Loss), Tax, Total						19	22	(4)
Accumulated Defined Benefit Plans Adjustment Attributable to Parent [Member]
Other Comprehensive Income (Loss), Tax, Total						(1)	(31)	(51)
Accumulated Foreign Currency Adjustment Attributable to Parent [Member]
Other Comprehensive Income (Loss), Tax, Total						12	29	44
Accumulated Net Gain (Loss) from Cash Flow Hedges Attributable to Parent [Member]
Other Comprehensive Income (Loss), Tax, Total						8	24	$ 3
Share Repurchase Agreement [Member] | Samsung [Member]
Stock Repurchased and Retired During Period, Shares (in shares)					35,000,000
Payments for Repurchase of Common Stock									$ 1,500
Preferred Stock Redemption Premium					$ 803
Stock Repurchase Program, Remaining Number of Shares Authorized to be Repurchased (in shares)					22,000,000
Share Repurchase Agreement, Make-whole payment, Cap, Percentage					5%
Liabilities for Freestanding Written Put Option						$ 17	$ 17		17
Number of Shares Held by Counter Party subject to Seven Year Lock-up Period (in shares)					58,000,000
The 2018 and 2019 Repurchase Programs [Member] | Samsung [Member]
Payments for Repurchase of Common Stock			$ 507	$ 507	$ 507
The 2019 Repurchase Program [Member]
Stock Repurchase Program, Authorized Amount												$ 5,000
Treasury Stock, Shares, Acquired (in shares)						0	6,000,000	7,300,000
Treasury Stock, Value, Acquired, Cost Method							$ 221	$ 274
Stock Repurchase Program, Remaining Authorized Repurchase Amount						$ 3,300			$ 3,300
Series A Convertible Preferred Stock [Member]
Preferred Stock, Shares Outstanding, Ending Balance (in shares)											2,300
Preferred Stock, Convertible, Shares Issuable (in shares)										115,000,000
Converted from Preferred Stock [Member]
Common Stock, Shares, Outstanding, Ending Balance (in shares)					80,000,000
Subsequent Event [Member]
Common Stock, Dividends, Per Share, Declared (in dollars per share)		$ 0.28
[1]Refer to Note 14 (Shareholders’ Equity) in the accompanying notes to the consolidated financial statements for additional information.[2]Refer to Note 14 (Shareholders’ Equity) in the notes to the consolidated financial statements for more information.

Note 14 - Shareholders' Equit_3

Note 14 - Shareholders' Equity - Changes in Capital Stock (Details) - USD ($) shares in Millions, $ in Millions		12 Months Ended
		Dec. 31, 2023		Dec. 31, 2022	Dec. 31, 2021
Balance (in shares)		1,800
Balance		$ 910
Balance (in shares)		(977)
Balance		$ (20,532)
Shares issued to benefit plans and for option exercises		253		$ 210	$ 277
Shares purchased for treasury				(221)	(274)
Other, net (1)	[1]	$ (121)		$ (62)	$ (66)
Balance (in shares)		1,800		1,800
Balance		$ 916		$ 910
Balance (in shares)		(980)		(977)
Balance		$ (20,637)		$ (20,532)
Common Stock [Member]
Balance (in shares)		1,820		1,815	1,726
Balance		$ 910		$ 907	$ 863
Shares issued to benefit plans and for option exercises (in shares)		11		5	9
Shares issued to benefit plans and for option exercises		$ 6		$ 3	$ 4
Conversion of preferred stock to common stock (in shares)					115
Conversion of preferred stock to common stock					$ 58
Repurchase of converted common stock (in shares)					(35)
Repurchase of converted common stock					$ (18)
Balance (in shares)		1,831		1,820	1,815
Balance		$ 916		$ 910	$ 907
Treasury Stock, Common [Member]
Balance (in shares)		(977)		(970)	(961)
Balance		$ (20,532)		$ (20,263)	$ (19,928)
Shares purchased for treasury (in shares)				(6)	(7)
Shares purchased for treasury				$ (221)	$ (274)
Other, net (1) (in shares)		(3)	[2]	(1)	(2)
Other, net (1)	[1]	$ (105)		$ (48)	$ (61)
Shares purchased for treasury (in shares)				(6)	(7)
Balance (in shares)		(980)		(977)	(970)
Balance		$ (20,637)		$ (20,532)	$ (20,263)
[1]Treasury stock includes the deemed surrender to the Company of common stock to satisfy employee tax withholding obligations[2]Includes the deemed surrender to the Company of common stock to satisfy employee tax withholding obligations.

Note 14 - Shareholders' Equit_4

Note 14 - Shareholders' Equity - Accumulated Other Comprehensive Loss (Details) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2023		Dec. 31, 2022		Dec. 31, 2021
Balance		$ 12,275		$ 12,545		$ 13,448
Amounts reclassified from accumulated other comprehensive loss (5)		(60)		(58)		(52)
Other comprehensive loss, net of tax		(218)		(655)		(435)
Balance		11,868		12,275		12,545
Accumulated Foreign Currency Adjustment Attributable to Parent [Member]
Balance		(1,712)		(933)		(329)	[1]
Other comprehensive (loss) income before reclassifications		(235)	[2]	(762)	[3]	(582)	[4]
Equity method affiliates	[5]	5		(17)		(22)
Other comprehensive loss, net of tax		(230)		(779)		(604)
Balance		(1,942)		(1,712)		(933)
Accumulated Defined Benefit Plans Adjustment Attributable to Parent [Member]
Balance		(118)		(272)		(450)	[1]
Other comprehensive (loss) income before reclassifications		1	[2]	151	[3]	178	[4]
Amounts reclassified from accumulated other comprehensive loss (5)	[6]	(25)		3
Other comprehensive loss, net of tax		(24)		154		178
Balance		(142)		(118)		(272)
AOCI, Accumulated Gain (Loss), Debt Securities, Available-for-Sale, Parent [Member]
Balance		(3)		(3)		(3)	[1]
Other comprehensive loss, net of tax						0
Balance		(3)		(3)		(3)
Accumulated Net Gain (Loss) from Cash Flow Hedges Attributable to Parent [Member]
Balance		3		33		42	[1]
Other comprehensive (loss) income before reclassifications		71	[2]	31	[3]	43	[4]
Amounts reclassified from accumulated other comprehensive loss (5)	[6]	(35)		(61)		(52)
Other comprehensive loss, net of tax		36		(30)		(9)
Balance		39		3		33
AOCI Including Portion Attributable to Noncontrolling Interest [Member]
Balance		(1,830)		(1,175)		(740)	[1]
Other comprehensive (loss) income before reclassifications		(163)	[2]	(580)	[3]	(361)	[4]
Amounts reclassified from accumulated other comprehensive loss (5)	[6]	(60)		(58)		(52)
Equity method affiliates	[5]	5		(17)		(22)
Other comprehensive loss, net of tax		(218)		(655)		(435)
Balance		$ (2,048)		$ (1,830)		$ (1,175)
[1]All amounts are after tax. Amounts in parentheses indicate debits to accumulated other comprehensive loss.[2]Amounts are net of total tax benefit of $19 million, primarily driven by $12 million and $8 million related to foreign currency translation adjustments and the hedging component, respectively, offset by negative impacts of $1 million related to retirement plans.[3]Amounts are net of total tax benefit of $22 million, primarily driven by $29 million and $24 million related to foreign currency translation adjustments and the hedging component, respectively, offset by negative impacts of $31 million related to retirement plans.[4]Amounts are net of total tax expense of $4 million, primarily driven by $51 million related to retirement plans, offset by positive impacts of $44 million and $3 million related to foreign currency translation adjustments and the hedging component, respectively.[5]Tax effects related to equity method affiliates are not significant in the reported periods.[6]Tax effect of reclassifications are disclosed separately within the footnote.

Note 14 - Shareholders' Equit_5

Note 14 - Shareholders' Equity - Reclassification Out of Accumulated Other Comprehensive Income by Component (Details) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Income tax provision (3)		$ 168	$ 411	$ 491
Total reclassifications for the period		60	58	52
Consolidated net sales		12,588	14,189	14,082
Cost of sales		8,657	9,683	9,019
Other expense, net		56	285	249
Accumulated Defined Benefit Plans Adjustment Attributable to Parent [Member]
Total reclassifications for the period	[1]	25	(3)
Reclassification out of Accumulated Other Comprehensive Income [Member]
Total reclassifications for the period	[2]	39	(4)	(3)
Consolidated net sales			52	14
Cost of sales		49	32	39
Other expense, net		(3)	(3)	(1)
Reclassification out of Accumulated Other Comprehensive Income [Member] | Accumulated Defined Benefit Plans Adjustment, Net Prior Service Attributable to Parent [Member]
Total reclassifications for the period	[2]	(1)		3
Reclassification out of Accumulated Other Comprehensive Income [Member] | Accumulated Defined Benefit Plans Adjustment Attributable to Parent [Member]
Total before tax		38	(4)
Income tax provision (3)		(13)	1
Total reclassifications for the period	[3]	25	(3)	0
Reclassification out of Accumulated Other Comprehensive Income [Member] | Accumulated Gain (Loss), Net, Cash Flow Hedge, Parent [Member]
Total before tax		46	81	53
Income tax provision (3)		(11)	(20)	(1)
Total reclassifications for the period		35	61	52
Consolidated net sales			52	14
Cost of sales		49	32	$ 39
Other expense, net		$ (3)	$ (3)
[1]Tax effect of reclassifications are disclosed separately within the footnote.[2]These accumulated other comprehensive loss components are included in net periodic pension cost. Refer to Note 11 (Employee Retirement Plans) in the notes to the consolidated financial statements for additional details.[3]Amounts in parentheses indicate debits to the statement of income.

Note 15 - Earnings Per Common_3

Note 15 - Earnings Per Common Share - Reconciliation of Earnings Per Common Share (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions		12 Months Ended
		Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Net income attributable to Corning Incorporated		$ 581	$ 1,316	$ 1,906
Less: Series A convertible preferred stock dividend				24
Less: Excess consideration paid for redemption of preferred shares (1)	[1],[2]			803
Net income available to common shareholders		581	1,316	1,079
Net income available to common shareholders - diluted		$ 581	$ 1,316	$ 1,079
Weighted-average common shares outstanding - basic (in shares)		848	843	828
Stock options and other awards (in shares)		11	14	16
Weighted-average common shares outstanding - diluted (in shares)		859	857	844
Basic (Note 15) (in dollars per share)		$ 0.69	$ 1.56	$ 1.3
Diluted (Note 15) (in dollars per share)		$ 0.68	$ 1.54	$ 1.28
Total (in shares)		2	1	31
Series A Convertible Preferred Stock [Member]
Total (in shares)	[2],[3]			31
Stock Options And Other Awards [Member]
Total (in shares)		2	1
[1]Refer to Note 14 (Shareholders’ Equity) in the accompanying notes to the consolidated financial statements for additional information.[2]Refer to Note 14 (Shareholders’ Equity) in the notes to the consolidated financial statements for more information.[3]For the year ended December 31, 2021, the Preferred Stock was anti-dilutive and therefore excluded from the calculation of diluted earnings per share.

Note 16 - Share-based Compens_3

Note 16 - Share-based Compensation (Details Textual) - USD ($) shares in Thousands, $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Share-Based Payment Arrangement, Expense, Tax Benefit	$ 17	$ 16	$ 37
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Available for Grant (in shares)	23,000
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Gross (in shares)	0	0	0
Proceeds from Stock Options Exercised	$ 42	$ 40	$ 97
Restricted Stock and Restricted Stock Units [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period, Fair Value	118	93	88
Performance-based Restricted Stock Units [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period, Fair Value	120	5	3
Share-Based Payment Arrangement, Option [Member]
Share-Based Payment Arrangement, Expense, Tax Benefit	4
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Vested in Period, Fair Value	6	20	16
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercises in Period, Intrinsic Value	$ 29	$ 36	$ 100

Note 16 - Share-based Compens_4

Note 16 - Share-based Compensation - Schedule of Compensation Cost for Share-Based Compensation Costs by Plan (Details) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Amount of share-based compensation cost recognized	[1]	$ 218	$ 175	$ 190
Restricted Stock and Restricted Stock Units [Member]
Amount of share-based compensation cost recognized		172	111	94
Unrecognized compensation cost		$ 211
Weighted-average remaining term, other than options (Year)		2 years 1 month 6 days
Performance-based Restricted Stock Units [Member]
Amount of share-based compensation cost recognized		$ 36	52	79
Unrecognized compensation cost		$ 17
Weighted-average remaining term, other than options (Year)		1 year 8 months 12 days
Share-Based Payment Arrangement, Option [Member]
Amount of share-based compensation cost recognized		$ 2	7	9
Other [Member]
Amount of share-based compensation cost recognized		$ 8	$ 5	$ 8
[1]The income tax benefit realized from share-based compensation was $17 million, $16 million and $37 million, respectively, for the years ended December 31, 2023, 2022 and 2021.

Note 16 - Share-based Compens_5

Note 16 - Share-based Compensation - Summary of Restricted Stock and Restricted Stock Units (Details) - Restricted Stock and Restricted Stock Units [Member] shares in Thousands	12 Months Ended
	Dec. 31, 2023 $ / shares shares
Beginning Non-vested shares and share units, number of shares (in shares) | shares	11,299
Beginning Non-vested shares and share units, weighted average grant-date fair value (in dollars per share) | $ / shares	$ 29.19
Granted, number of shares (in shares) | shares	7,438
Granted, weighted average grant-date fair value (in dollars per share) | $ / shares	$ 34.9
Vested, number of shares (in shares) | shares	(4,832)
Vested, weighted average grant-date fair value (in dollars per share) | $ / shares	$ 24.44
Forfeited, number of shares (in shares) | shares	(584)
Forfeited, weighted average grant-date fair value (in dollars per share) | $ / shares	$ 34.03
Ending Non-vested shares and share units, number of shares (in shares) | shares	13,321
Ending Non-vested shares and share units, weighted average grant-date fair value (in dollars per share) | $ / shares	$ 33.89

Note 16 - Share-based Compens_6

Note 16 - Share-based Compensation - Summary of Performance-based Restricted Stock Units (Details) - Performance Shares [Member] shares in Thousands	12 Months Ended
	Dec. 31, 2023 $ / shares shares
Beginning Non-vested shares and share units, number of shares (in shares) | shares	4,696
Beginning Non-vested shares and share units, weighted average grant-date fair value (in dollars per share) | $ / shares	$ 35.41
Granted, number of shares (in shares) | shares	1,674
Granted, weighted average grant-date fair value (in dollars per share) | $ / shares	$ 35.08
Vested, number of shares (in shares) | shares	(3,587)
Vested, weighted average grant-date fair value (in dollars per share) | $ / shares	$ 33.37
Performance adjustments (in shares) | shares	(726)
Performance adjustments (in dollars per share) | $ / shares	$ 35.43
Forfeited, number of shares (in shares) | shares	(31)
Forfeited, weighted average grant-date fair value (in dollars per share) | $ / shares	$ 36.26
Ending Non-vested shares and share units, number of shares (in shares) | shares	2,026
Ending Non-vested shares and share units, weighted average grant-date fair value (in dollars per share) | $ / shares	$ 38.89

Note 16 - Share-based Compens_7

Note 16 - Share-based Compensation - Summary of Stock Options Outstanding (Details) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2023 USD ($) $ / shares shares
Beginning Options Outstanding, number of shares (in shares) | shares	9,665
Beginning Options Outstanding, weighted average exercise price (in dollars per share) | $ / shares	$ 22.92
Exercised, number of shares (in shares) | shares	(2,114)
Exercised, weighted average exercise price (in dollars per share) | $ / shares	$ 19.78
Forfeited and Expired, number of shares (in shares) | shares	(52)
Forfeited and Expired, weighted average exercise price (in dollars per share) | $ / shares	$ 19.65
Ending Options Outstanding, number of shares (in shares) | shares	7,499
Ending Options Outstanding, weighted average exercise price (in dollars per share) | $ / shares	$ 23.82
Options Outstanding, weighted average remaining contractual term (Year)	4 years 11 months 12 days
Options Outstanding, aggregate intrinsic value | $	$ 54,327
Options vested and exercisable, number of shares (in shares) | shares	7,499
Options vested and exercisable, weighted average exercise price (in dollars per share) | $ / shares	$ 23.82
Options vested and exercisable, weighted average remaining contractual term (Year)	4 years 11 months 12 days
Options vested and exercisable, aggregate intrinsic value | $	$ 54,327

Note 17 - Reportable Segments_2

Note 17 - Reportable Segments (Details Textual)	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Number of Reportable Segments	5	5	5
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent	21%	21%	21%
Japan, Yen
Foreign Currency Exchange Rate, Translation	107
Korea (South), Won
Foreign Currency Exchange Rate, Translation	1,175
China, Yuan Renminbi
Foreign Currency Exchange Rate, Translation	6.7
Taiwan, New Dollars
Foreign Currency Exchange Rate, Translation	31
Euro Member Countries, Euro
Foreign Currency Exchange Rate, Translation	0.81

Note 17 - Reportable Segments -

Note 17 - Reportable Segments - Reportable Segments (Details) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Depreciation (1)		$ 1,247	$ 1,329	$ 1,352
Research, development and engineering expenses (2)		1,076	1,047	995
Income tax provision (3)		168	411	491
Net income attributable to Corning Incorporated		581	1,316	1,906
Investment in affiliated companies, at equity		296	261
Income tax provision (3)		168	411	491
Operating Segments [Member]
Net sales of reportable segments	[1]	13,580	14,805	14,120
Depreciation (1)	[2]	1,235	1,285	1,315
Research, development and engineering expenses (2)	[3]	863	874	838
Income tax provision (3)	[4]	(541)	(615)	(612)
Net income attributable to Corning Incorporated		1,973	2,254	2,296
Investment in affiliated companies, at equity		296	261	264
Segment assets (4)	[5]	18,578	18,877	19,148
Capital expenditures		1,089	1,613	1,699
Income tax provision (3)	[4]	(541)	(615)	(612)
Optical Communications [Member] | Operating Segments [Member]
Net sales of reportable segments		4,012	5,023	4,349
Depreciation (1)	[2]	263	249	224
Research, development and engineering expenses (2)	[3]	238	230	216
Income tax provision (3)	[4]	(130)	(180)	(152)
Net income attributable to Corning Incorporated		478	661	553
Investment in affiliated companies, at equity		3	3	3
Segment assets (4)	[5]	3,241	3,295	3,183
Capital expenditures		176	368	301
Income tax provision (3)	[4]	(130)	(180)	(152)
Display Technologies [Member] | Operating Segments [Member]
Net sales of reportable segments		3,532	3,306	3,700
Depreciation (1)	[2]	481	547	605
Research, development and engineering expenses (2)	[3]	102	124	110
Income tax provision (3)	[4]	(220)	(203)	(249)
Net income attributable to Corning Incorporated		842	769	960
Investment in affiliated companies, at equity		105	102	109
Segment assets (4)	[5]	7,899	8,104	8,672
Capital expenditures		363	495	710
Income tax provision (3)	[4]	(220)	(203)	(249)
Specialty Materials [Member] | Operating Segments [Member]
Net sales of reportable segments		1,865	2,002	2,008
Depreciation (1)	[2]	149	155	161
Research, development and engineering expenses (2)	[3]	229	222	208
Income tax provision (3)	[4]	(53)	(90)	(99)
Net income attributable to Corning Incorporated		202	340	371
Investment in affiliated companies, at equity		11	8	6
Segment assets (4)	[5]	2,476	2,419	2,328
Capital expenditures		175	306	183
Income tax provision (3)	[4]	(53)	(90)	(99)
Environmental Technologies [Member] | Operating Segments [Member]
Net sales of reportable segments		1,766	1,584	1,586
Depreciation (1)	[2]	129	128	139
Research, development and engineering expenses (2)	[3]	99	98	111
Income tax provision (3)	[4]	(103)	(78)	(72)
Net income attributable to Corning Incorporated		386	292	269
Segment assets (4)	[5]	1,873	2,061	2,150
Capital expenditures		31	110	228
Income tax provision (3)	[4]	(103)	(78)	(72)
Life Science Products [Member] | Operating Segments [Member]
Net sales of reportable segments		959	1,228	1,234
Depreciation (1)	[2]	69	60	52
Research, development and engineering expenses (2)	[3]	33	37	33
Income tax provision (3)	[4]	(13)	(40)	(51)
Net income attributable to Corning Incorporated		50	153	194
Investment in affiliated companies, at equity		3	4	4
Segment assets (4)	[5]	782	862	791
Capital expenditures		41	116	128
Income tax provision (3)	[4]	(13)	(40)	(51)
Hemlock and Emerging Growth Businesses [Member] | Operating Segments [Member]
Net sales of reportable segments		1,446	1,662	1,243
Depreciation (1)	[2]	144	146	134
Research, development and engineering expenses (2)	[3]	162	163	160
Income tax provision (3)	[4]	(22)	(24)	11
Net income attributable to Corning Incorporated	[6]	15	39	(51)
Investment in affiliated companies, at equity		174	144	142
Segment assets (4)	[5]	2,307	2,136	2,024
Capital expenditures		303	218	149
Income tax provision (3)	[4]	$ (22)	$ (24)	$ 11
[1]Net sales are attributed to countries based on location of customer.[2]Depreciation expense for Corning’s reportable segments and Hemlock and Emerging Growth Businesses includes an allocation of depreciation of corporate property not specifically identifiable to a segment.[3]Research, development and engineering expenses include direct project spending that is identifiable to a segment.[4]Income tax (provision) benefit reflects a tax rate of 21%.[5]Segment assets include inventory, accounts receivable, property, plant and equipment, net of accumulated depreciation, and associated equity companies.[6]Amount does not include research, development and engineering expense related to restructuring, impairment and other charges and credits and pension mark-to-market.

Note 17 - Reportable Segments_3

Note 17 - Reportable Segments - Reconciliation of Reportable Segments and All Other Net Sales to Consolidated Net Sales (Details) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Consolidated net sales		$ 12,588	$ 14,189	$ 14,082
Operating Segments [Member]
Net sales of reportable segments	[1]	13,580	14,805	14,120
Impact of constant currency reporting (1)	[2]	(992)	(616)	(38)
Consolidated net sales		12,588	14,189	14,082
Operating Segments [Member] | Reportable Segments [Member]
Net sales of reportable segments		12,134	13,143	12,877
Operating Segments [Member] | Hemlock and Emerging Growth Businesses [Member]
Net sales of reportable segments		$ 1,446	$ 1,662	$ 1,243
[1]Net sales are attributed to countries based on location of customer.[2]This amount primarily represents the impact of foreign currency adjustments in the Display Technologies segment.

Note 17 - Reportable Segments_4

Note 17 - Reportable Segments - Reconciliation of Reportable Segment Net Income (Loss) to Consolidated Net Income (Details) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Net income attributable to Corning Incorporated		$ 581	$ 1,316	$ 1,906
Gain on foreign currency hedges related to translated earnings		161	351	354
Research, development and engineering expenses		1,076	1,047	995
Amortization of intangibles		(122)	(123)	(129)
Interest expense, net		(329)	(292)	(300)
Income tax benefit		(168)	(411)	(491)
Severance (charges) credits (2)	[1]	(187)	(70)	13
Operating Segments [Member]
Net income attributable to Corning Incorporated		1,973	2,254	2,296
Impact of constant currency reporting	[2]	(992)	(616)	(38)
Research, development and engineering expenses	[3]	863	874	838
Income tax benefit	[4]	541	615	612
Operating Segments [Member] | Reportable Segments [Member]
Net income attributable to Corning Incorporated		1,958	2,215	2,347
Operating Segments [Member] | Hemlock and Emerging Growth Businesses [Member]
Net income attributable to Corning Incorporated	[5]	15	39	(51)
Research, development and engineering expenses	[3]	162	163	160
Income tax benefit	[4]	22	24	(11)
Segment Reconciling Items [Member]
Net income attributable to Corning Incorporated		581	1,316	1,906
Impact of constant currency reporting		(744)	(480)	(87)
Gain on foreign currency hedges related to translated earnings		161	348	354
Translation gain on Japanese yen-denominated debt		100	191	180
Litigation, regulatory and other legal matters		(61)	(100)	(16)
Research, development and engineering expenses	[5],[6]	(162)	(163)	(151)
Amortization of intangibles		(122)	(123)	(129)
Interest expense, net		(244)	(237)	(265)
Income tax benefit		373	204	120
Pension mark-to-market		(15)	(11)	(32)
Severance (charges) credits (2)	[6]	(187)	(70)	13
Capacity optimization and other charges and credits (3)	[7]	(284)	(344)	(123)
Bond redemption loss (4)	[8]			(31)
Gain on sale of business			53	54
Other corporate items		$ (207)	$ (206)	$ (277)
[1]Severance charges in the year ended December 31, 2023 include $20 million in curtailment and special termination benefit charges.[2]This amount primarily represents the impact of foreign currency adjustments in the Display Technologies segment.[3]Research, development and engineering expenses include direct project spending that is identifiable to a segment.[4]Income tax (provision) benefit reflects a tax rate of 21%.[5]Amount does not include research, development and engineering expense related to restructuring, impairment and other charges and credits and pension mark-to-market.[6]Refer to Note 2 (Restructuring, Impairment and Other Charges and Credits) in the notes to the consolidated financial statements for additional information.[7]Amount includes charges associated with impairment losses, asset write-offs, accelerated depreciation, disposal costs and inventory write-downs. Refer to Note 2 (Restructuring, Impairment and Other Charges and Credits) in the notes to the consolidated financial statements for additional information.[8]Refer to Note 10 (Debt) in the notes to the consolidated financial statements for additional information.

Note 17 - Reportable Segments_5

Note 17 - Reportable Segments - Reconciliation of Reportable Segment Assets (Details) - USD ($) $ in Millions		Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Assets		$ 28,500	$ 29,499	$ 30,154
Current assets (1)		7,212	7,453
Property, plant and equipment, net (3)	[1]	14,630	15,371
Other non-current assets (4)		2,220	2,179
Operating Segments [Member] | Reportable Segments [Member]
Assets		16,271	16,741	17,124
Operating Segments [Member] | Hemlock and Emerging Growth Businesses [Member]
Assets		2,307	2,136	2,024
Segment Reconciling Items [Member]
Current assets (1)	[2]	2,522	2,823	3,163
Investments (2)	[3]	119	99	54
Property, plant and equipment, net (3)	[4]	1,038	1,385	1,426
Other non-current assets (4)	[5]	$ 6,243	$ 6,315	$ 6,363
[1]Approximately $40 million, $48 million and $36 million of interest costs were capitalized as part of property, plant and equipment during the years ended December 31, 2023, 2022 and 2021, respectively.[2]Includes cash, other receivables, prepaid expenses and current portion of long-term derivative assets.[3]Represents other corporate investments.[4]Represents corporate property not specifically identifiable to an operating segment.[5]Includes goodwill, other intangible assets, pension assets, long-term derivative assets, operating leases and deferred income taxes.

Note 17 - Reportable Segments_6

Note 17 - Reportable Segments -Selected Financial Information On Product Lines and Reportable Segments (Details) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Net sales		$ 12,588	$ 14,189	$ 14,082
Polycrystalline Silicon [Member]
Net sales		1,014	1,191	892
Operating Segments [Member]
Net sales of reportable segments and All Other	[1]	13,580	14,805	14,120
Impact of constant currency reporting	[2]	(992)	(616)	(38)
Net sales		12,588	14,189	14,082
Operating Segments [Member] | Optical Communications [Member]
Net sales of reportable segments and All Other		4,012	5,023	4,349
Operating Segments [Member] | Optical Communications [Member] | Carrier Network [Member]
Net sales of reportable segments and All Other		2,871	3,760	3,200
Operating Segments [Member] | Optical Communications [Member] | Enterprise Network [Member]
Net sales of reportable segments and All Other		1,141	1,263	1,149
Operating Segments [Member] | Display Technologies [Member]
Net sales of reportable segments and All Other		3,532	3,306	3,700
Operating Segments [Member] | Specialty Materials [Member]
Net sales of reportable segments and All Other		1,865	2,002	2,008
Operating Segments [Member] | Specialty Materials [Member] | Corning Gorilla Glass [Member]
Net sales of reportable segments and All Other		1,136	1,331	1,403
Operating Segments [Member] | Specialty Materials [Member] | Advanced Optics and Other Specially Glass [Member]
Net sales of reportable segments and All Other		729	671	605
Operating Segments [Member] | Environmental Technologies [Member]
Net sales of reportable segments and All Other		1,766	1,584	1,586
Operating Segments [Member] | Environmental Technologies [Member] | Automotive And Other [Member]
Net sales of reportable segments and All Other		1,123	934	936
Operating Segments [Member] | Environmental Technologies [Member] | Diesel [Member]
Net sales of reportable segments and All Other		643	650	650
Operating Segments [Member] | Life Science Products [Member]
Net sales of reportable segments and All Other		959	1,228	1,234
Operating Segments [Member] | Life Science Products [Member] | Labware [Member]
Net sales of reportable segments and All Other		487	657	671
Operating Segments [Member] | Life Science Products [Member] | Cell Culture Products [Member]
Net sales of reportable segments and All Other		472	571	563
Operating Segments [Member] | Hemlock and Emerging Growth Businesses [Member]
Net sales of reportable segments and All Other		1,446	1,662	1,243
Operating Segments [Member] | Hemlock and Emerging Growth Businesses [Member] | Polycrystalline Silicon [Member]
Net sales of reportable segments and All Other		1,014	1,191	892
Operating Segments [Member] | Hemlock and Emerging Growth Businesses [Member] | Other [Member]
Net sales of reportable segments and All Other		432	471	351
Operating Segments [Member] | Reportable Segments [Member]
Net sales of reportable segments and All Other		$ 12,134	$ 13,143	$ 12,877
[1]Net sales are attributed to countries based on location of customer.[2]This amount primarily represents the impact of foreign currency adjustments in the Display Technologies segment.

Note 17 - Reportable Segments_7

Note 17 - Reportable Segments - Information Concerning Principal Geographic Areas (Details) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Operating Segments [Member]
Net sales of reportable segments and All Other	[1]	$ 13,580	$ 14,805	$ 14,120
Long- lived assets	[2]	20,135	20,973	21,429
UNITED STATES
Net sales of reportable segments and All Other	[1]	4,439	5,149	4,539
Long- lived assets	[2]	8,698	8,937	8,600
CANADA
Net sales of reportable segments and All Other	[1]	317	503	472
Long- lived assets	[2]	95	99	114
MEXICO
Net sales of reportable segments and All Other	[1]	84	96	93
Long- lived assets	[2]	211	180	289
North America [Member]
Net sales of reportable segments and All Other	[1]	4,840	5,748	5,104
Long- lived assets	[2]	9,004	9,216	9,003
JAPAN
Net sales of reportable segments and All Other	[1]	667	617	780
Long- lived assets	[2]	388	429	496
TAIWAN
Net sales of reportable segments and All Other	[1]	855	813	983
Long- lived assets	[2]	1,515	1,696	1,923
CHINA
Net sales of reportable segments and All Other	[1]	4,439	4,435	4,495
Long- lived assets	[2]	4,575	4,794	4,966
KOREA, REPUBLIC OF
Net sales of reportable segments and All Other	[1]	418	514	640
Long- lived assets	[2]	3,092	3,294	3,479
Other Asia Pacific [Member]
Net sales of reportable segments and All Other	[1]	620	729	459
Long- lived assets	[2]	88	81	84
Asia Pacific [Member]
Net sales of reportable segments and All Other	[1]	6,999	7,108	7,357
Long- lived assets	[2]	9,658	10,294	10,948
GERMANY
Net sales of reportable segments and All Other	[1]	535	539	462
Long- lived assets	[2]	464	459	500
Other Europe [Member]
Net sales of reportable segments and All Other	[1]	998	1,116	925
Long- lived assets	[2]	956	937	910
Europe [Member]
Net sales of reportable segments and All Other	[1]	1,533	1,655	1,387
Long- lived assets	[2]	1,420	1,396	1,410
All Other [Member]
Net sales of reportable segments and All Other	[1]	208	294	272
Long- lived assets	[2]	$ 53	$ 67	$ 68
[1]Net sales are attributed to countries based on location of customer.[2]Long-lived assets primarily include investments, plant and equipment, goodwill and other intangible assets.