Corning (GLW) 10-K 14 Feb 22 2021 FY Annual report Financial data

Document And Entity Information

Document And Entity Information - USD ($)	12 Months Ended
	Dec. 31, 2021	Jan. 31, 2022	Jun. 30, 2021
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	2021
Document Type	10-K
Document Annual Report	true
Document Period End Date	Dec. 31, 2021
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
Title of 12(b) Security	Common Stock
Trading Symbol	GLW
Security Exchange Name	NYSE
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 Emerging Growth Company	false
Entity Small Business	false
Entity Shell Company	false
Entity Public Float			$ 35,000,000,000
Entity Common Stock, Shares Outstanding		845,849,498
Auditor Name	PricewaterhouseCoopers LLP
Auditor Location	New York, New York
Auditor Firm ID	238
ICFR Auditor Attestation Flag	true

Consolidated Statements of Inco

Consolidated Statements of Income - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Net sales		$ 14,082	$ 11,303	$ 11,503
Cost of sales		9,019	7,772	7,468
Gross margin		5,063	3,531	4,035
Operating expenses:
Selling, general and administrative expenses		1,827	1,747	1,585
Research, development and engineering expenses		995	1,154	1,031
Amortization of purchased intangibles		129	121	113
Operating income		2,112	509	1,306
Equity in earnings (losses) of affiliated companies (Note 3)		35	(25)	17
Interest income		11	15	21
Interest expense		(300)	(276)	(221)
Translated earnings contract gain (loss), net (Note 15)		354	(38)	248
Transaction-related gain, net (Note 4)			498
Other income (expense), net		185	(60)	(155)
Income before income taxes		2,397	623	1,216
Provision for income taxes (Note 8)		(491)	(111)	(256)
Net income attributable to Corning Incorporated		$ 1,906	$ 512	$ 960
Earnings per common share attributable to Corning Incorporated:
Basic (Note 18) (in dollars per share)		$ 1.30	$ 0.54	$ 1.11
Diluted (Note 18) (in dollars per share)		$ 1.28	$ 0.54	$ 1.07
Net income attributable to Corning Incorporated		$ 1,906	$ 512	$ 960
Series A convertible preferred stock dividend		(24)	(98)	(98)
Excess consideration paid for redemption of preferred stock (1)	[1]	(803)
Net income available to common shareholders		$ 1,079	$ 414	$ 862
[1]	Refer to Note 17 (Shareholders' Equity) and Note 18 (Earnings per Common Share) to the consolidated financial statements for additional information.

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Net income attributable to Corning Incorporated	$ 1,906	$ 512	$ 960
Foreign currency translation adjustments and other (Note 17)	(604)	528	(143)
Net unrealized gains on investments			1
Unamortized gains (losses) and prior service credits (costs) for postretirement benefit plans	178	(88)	(64)
Net unrealized (losses) gains on designated hedges	(9)	(9)	45
Other comprehensive (loss) income, net of tax	(435)	431	(161)
Comprehensive income attributable to Corning Incorporated	$ 1,471	$ 943	$ 799

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
Current assets:
Cash and cash equivalents	$ 2,148	$ 2,672
Trade accounts receivable, net of doubtful accounts - $42 and $46	2,004	2,133
Inventories, net (Note 6)	2,481	2,438
Other current assets (Note 11 and 15)	1,026	761
Total current assets	7,659	8,004
Property, plant and equipment, net (3)	15,804	15,742
Goodwill, net (Note 10)	2,421	2,460
Other intangible assets, net (Note 10)	1,148	1,308
Deferred tax assets	1,066	1,121
Other non-current assets (4)	2,056	2,140
Total Assets	30,154	30,775
Current liabilities:
Current portion of long-term debt and short-term borrowings (Note 12)	55	156
Accounts payable	1,612	1,174
Other accrued liabilities (Note 11 and 14)	3,139	2,437
Total current liabilities	4,806	3,767
Long-term debt	6,989	7,816
Postretirement benefits other than pensions (Note 13)	622	727
Other liabilities (Note 11 and 14)	5,192	5,017
Total liabilities	17,609	17,327
Commitments and contingencies (Note 14)
Shareholders’ equity (Note 17):
Convertible preferred stock, Series A – Par value $100 per share; Shares authorized 10 million; Shares issued: 0 and 2,300		2,300
Common stock – Par value $0.50 per share; Shares authorized 3.8 billion; Shares issued: 1.8 billion and 1.7 billion	907	863
Additional paid-in capital – common stock	16,475	14,642
Retained earnings	16,389	16,120
Treasury stock, at cost; Shares held: 970 million and 961 million	(20,263)	(19,928)
Accumulated other comprehensive loss	(1,175)	(740)
Total Corning Incorporated shareholders’ equity	12,333	13,257
Noncontrolling interest	212	191
Total equity	12,545	13,448
Total Liabilities and Equity	$ 30,154	$ 30,775

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parentheticals) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
Doubtful accounts and allowances	$ 42	$ 46
Accumulated depreciation	$ 13,969	$ 13,663
Convertible preferred stock, par value (in dollars per share)	$ 100	$ 100
Convertible preferred stock, shares authorized (in shares)	10,000,000	10,000,000
Convertible preferred stock, shares issued (in shares)	0	2,300
Common stock, par value (in dollars per share)	$ 0.50	$ 0.50
Common stock, shares authorized (in shares)	3,800,000,000	3,800,000,000
Common stock, shares issued (in shares)	1,800,000,000	1,700,000,000
Treasury stock, shares held (in shares)	970,000,000	961,000,000

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Cash Flows from Operating Activities:
Net income	$ 1,906	$ 512	$ 960
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation	1,352	1,399	1,390
Amortization of purchased intangibles	129	121	113
Loss on disposal of assets	57	138	123
Severance (reversals) charges	(13)	148	63
Severance payments	(26)	(147)	(28)
Share-based compensation expense	190	207	56
Equity in (earnings) losses of affiliated companies	(35)	25	(17)
Translation (gain) loss on Japanese yen-denominated debt	(180)	86	3
Dividends received from affiliated companies	8	1	106
Deferred tax provision (benefit)	16	(20)	(191)
Pension plan contributions	(24)	(221)	(2)
Translated earnings contract (gain) loss	(354)	38	(248)
Unrealized translation loss (gain) on transactions	77	(133)	33
Asbestos claim payments		(130)	(50)
Tax assessment refunds		101
Asset impairment		217
Transaction-related gain, net		(498)
Gain on investment		(107)
Changes in assets and liabilities:
Trade accounts receivable	(54)	(274)	48
Inventories	(103)	423	(298)
Other current assets	(224)	(25)	(300)
Accounts payable and other current liabilities	806	139	31
Customer deposits and incentives	97	238	89
Deferred income	(116)	(46)
Other, net	(97)	(12)	150
Net cash provided by operating activities	3,412	2,180	2,031
Cash Flows from Investing Activities:
Capital expenditures	(1,637)	(1,377)	(1,978)
Proceeds from sale or disposal of assets	17	37
Proceeds from sale of business	103
Proceeds from and investment in unconsolidated entities, net	84	(28)	(26)
Sale of equipment for related party			78
Realized gains on translated earnings contracts	67	12	55
Other, net	(53)	46	(20)
Net cash used in investing activities	(1,419)	(1,310)	(1,891)
Cash Flows from Financing Activities:
Repayments of short-term borrowings	(144)	(100)
Repayments of long-term debt	(716)	(121)	(300)
Proceeds from issuance of long-term debt	22	243	1,831
Payment for redemption of preferred stock	(507)
Payments of employee withholding tax on stock awards	(61)	(11)	(17)
Proceeds from exercise of stock options	97	124	58
Purchases of common stock for treasury	(274)	(105)	(940)
Dividends paid	(871)	(787)	(742)
Other, net	2	28	63
Net cash used in financing activities	(2,452)	(729)	(47)
Effect of exchange rates on cash	(65)	97	(14)
Net (decrease) increase in cash and cash equivalents	(524)	238	79
Cash and cash equivalents at beginning of year	2,672	2,434	2,355
Cash and cash equivalents at end of year	$ 2,148	$ 2,672	$ 2,434

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 [Member]	AOCI Attributable to Parent [Member]	Parent [Member]	Noncontrolling Interest [Member]	Total
Balance at Dec. 31, 2018		$ 2,300	$ 857	$ 14,212	$ 16,303	$ (18,870)	$ (1,010)	$ 13,792	$ 94	$ 13,886
Net income (loss)					960			960	19	979
Other comprehensive income (loss)							(161)	(161)		(161)
Shares purchased for treasury						(925)		(925)		(925)
Shares issued to benefit plans and for option exercises			2	111				113		113
Common dividends					(625)			(625)		(625)
Preferred dividends					(98)			(98)		(98)
Other, net	[1]				(132)	(17)		(149)	(23)	(172)
Balance at Dec. 31, 2019		2,300	859	14,323	16,408	(19,812)	(1,171)	12,907	90	12,997
Net income (loss)					512			512	11	523
Other comprehensive income (loss)							431	431	1	432
Shares purchased for treasury						(105)		(105)		(105)
Shares issued to benefit plans and for option exercises			4	319				323		323
Common dividends					(681)			(681)		(681)
Preferred dividends					(98)			(98)		(98)
Other, net						(11)		(32)	(13)	(45)
Non-controlling interest in HSG (2)	[2]								102	102
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 income (loss)							(435)	(435)	(1)	(436)
Shares purchased 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	(61)		(59)	(7)	(66)
Redemption of preferred stock	[3]	(700)			(803)			(1,503)		(1,503)
Conversion of preferred stock to common stock	[4]	(1,600)	40	1,560
Balance at Dec. 31, 2021		$ 0	$ 907	$ 16,475	$ 16,389	$ (20,263)	$ (1,175)	$ 12,333	$ 212	$ 12,545
[1]	Adjustments to retained earnings include the effect of the accounting changes recorded for the adoption of the new standard for reclassification of stranded tax effects in accumulated other comprehensive loss in the amount of $53 million and the impact of an equity affiliate's adoption of the new revenue standard in January 2019. A net reduction of $186 million net of tax was recorded to beginning retained earnings for performance obligations of which a significant amount settled by the end of 2019.
[2]	Refer to Note 4 (HSG Transactions and Acquisitions) to the consolidated financial statements for more information.
[3]	Refer to Note 17 (Shareholders' Equity) and Note 18 (Earnings per Common Share) to the consolidated financial statements for additional information.
[4]	Refer to Note 17 (Shareholders' Equity) to the consolidated financial statement for additional information.

Consolidated Statements of Ch_2

Consolidated Statements of Changes In Shareholders' Equity (Parentheticals) - $ / shares	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Common Dividends (in dollars per share)	$ 0.96	$ 0.88	$ 0.80
Preferred Dividends (in dollars per share)	$ 10,625	$ 42,500	$ 42,500

Note 1 - Significant Accounting

Note 1 - Significant Accounting Policies	12 Months Ended
	Dec. 31, 2021
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 Corning’s consolidated financial statements were prepared in conformity with generally accepted accounting principles in the U.S. and include the assets, liabilities, revenue and expenses of all majority-owned subsidiaries over which Corning exercises control. The equity method of accounting is used for investments in affiliated companies that are not For our investments in companies that we do not not On September 9, 2020, 3 4 All intercompany accounts, transactions and profits are eliminated in consolidation. Certain prior year amounts have been reclassified to conform to the current year’s 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 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 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 are 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. In addition, Corning also has contractual arrangements with certain customers 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. Research and Development Costs Research and development costs are charged to expense as incurred. Research and development costs totaled $0.8 billion, $1.0 billion and $0.8 billion in 2021 2020 2019 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, exchange rate gains and losses are included in income for the period in which the exchange rates changed. A net foreign currency translation gain of $126 million was recorded for the year ended December 31, 2021. December 31, 2020 2019, Share-Based Compensation Corning’s share-based compensation programs include employee stock option grants, time-based or performance-based restricted stock and restricted stock units, as more fully described in Note 19 The cost of share-based compensation awards is equal to the fair value of the award at the date of grant and compensation expense is recognized for those awards earned over the vesting period. Corning estimates the fair value of share-based awards using a multiple-point Black-Scholes option valuation model, which incorporates assumptions including expected volatility, dividend yield, risk-free rate, expected term and departure rates. Cash and Cash Equivalents Cash equivalents consist of highly liquid investments that are readily convertible into cash. Securities with contractual maturities of three Supplemental disclosure of cash flow information is as follows (in millions): Year ended December 31, 2021 2020 2019 Non-cash transactions: Accruals for capital expenditures $ 357 $ 231 $ 592 Cash paid for interest and income taxes: Interest (1) $ 287 $ 298 $ 248 Income taxes, net of refunds received $ 377 $ 220 $ 474 ( 1 Included in this amount are approximately $36 million, $58 million and $54 million of interest costs that were capitalized as part of property, plant and equipment, net of accumulated depreciation, in 2021 2020 2019 Allowance for 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 allowances 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 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 Inventories, net Inventories are stated at the lower of cost or net realizable value, which is defined as estimated selling prices in the ordinary course of business, less reasonably predictable costs of completion, disposal and transportation. Cost is determined on a 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 estimated useful lives of properties using the straight-line method. Except as described in Note 9 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 As a practical expedient, lease and non-lease components of a contract are accounted for as a single lease component across all underlying asset classes. Corning does not Corning’s leases do not not not Refer to Note 7 Impairment of Long-Lived Assets The recoverability of long-lived assets, such as 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 We are required to assess the recoverability of the carrying value of long-lived assets when an indicator of impairment has been identified. We review long-lived assets in each quarter in which impairment indicators are present. We must exercise judgment in assessing whether an event of impairment has occurred. Refer to Note 2 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 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. Refer to Note 13 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. The effective income tax rate reflects the assessment of the ultimate outcome of tax audits. In evaluating the tax benefits associated with our various tax filing positions, we record a tax benefit for uncertain tax positions 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. Valuation allowances are established when management is unable to conclude that it is more likely than not Generally, Corning will indefinitely reinvest the foreign earnings of: ( 1 2 3 4 5 Equity Method Investments 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 For an equity investment with impairment indicators, the fair value is measured based on discounted cash flows, or other appropriate valuation methods, depending on the nature of the company involved. If it is probable that the carrying amount of the investment cannot be recovered, the impairment is considered other-than-temporary and recorded in earnings, and the equity investment balance is reduced to its fair value. All equity securities that do not not not 3 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, asset retirement obligations, equity method investments and other investments that Corning cannot significantly influence. 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. 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. Interest rate swaps are utilized to reduce the risk of changes in a benchmark interest rate from the probable forecasted issuance of debt and manage the mix of fixed and floating rate debt. Financial exposure is managed in accordance with corporate policies and procedures. All derivatives are recorded at fair value on the consolidated balance sheets. Changes in the fair value of derivatives designated as cash flow hedges and hedges of net investments in foreign operations are not not New Accounting Standards During the first 2021, 2020 06. 470 20. 815 40. may 260. 2020 06 not one January 1, 2021. In November 2021, 2021 10 832 2021 10 December 15, 2021. not January 1, 2022. As of December 31, 2021 no

Note 2 - Restructuring, Impairm

Note 2 - Restructuring, Impairment and Other Charges and Credits	12 Months Ended
	Dec. 31, 2021
Notes to Financial Statements
Restructuring and Related Activities Disclosure [Text Block]	2. The following restructuring, impairment and other charges and credits were recorded (in millions): Year ended December 31, 2021 2020 2019 Severance $ (13 ) $ 148 $ 63 Asset impairment 217 Capacity realignment 46 304 312 Other charges and credits 77 158 64 Total restructuring, impairment and other charges and credits $ 110 $ 827 $ 439 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. In 2020, Severance In the second 2020, December 31, 2020 2019, December 31, 2021, Asset Impairment For the year ended December 31, 2020, Capacity Realignment Capacity realignment for the year ended December 31, 2020, December 31, 2019, The following tables present the impact and respective location of total restructuring, impairment, and other charges and credits on the consolidated statements of income (in millions): 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 realignment 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 Year ended December 31, 2020 Selling, Research, general development and and Gross administrative engineering margin (1) expenses expenses Other Total Severance $ 83 $ 34 $ 31 $ 148 Asset impairment 6 211 217 Capacity realignment 288 16 304 Other charges and credits 72 60 5 $ 21 158 Total restructuring, impairment and other charges and credits $ 443 $ 116 $ 247 $ 21 $ 827 Year ended December 31, 2019 Selling, Research, general development and and Gross administrative engineering margin (1) expenses expenses Other Total Severance $ 30 $ 20 $ 13 $ 63 Capacity realignment 298 14 312 Other charges and credits 60 8 3 $ (7 ) 64 Total restructuring, impairment and other charges and credits $ 388 $ 28 $ 30 $ (7 ) $ 439 ( 1 Activity reflected in cost of sales.

Note 3 - Investments

Note 3 - Investments	12 Months Ended
	Dec. 31, 2021
Notes to Financial Statements
Equity Method Investments and Joint Ventures Disclosure [Text Block]	3. Investments are comprised of the following (in millions): Ownership December 31, interest 2021 2020 Affiliated companies accounted for by the equity method 50% or less $ 264 $ 258 Other investments 64 177 Total investment assets $ 328 $ 435 Affiliated Companies at Equity Method The results of operations and financial position of the investments accounted for under the equity method are presented below as of December 31 2021 2020 2019 Statement of operations (1) Net sales $ 816 $ 1,201 $ 1,508 Gross profit $ 104 $ 136 $ 79 Net income (loss) $ 113 $ (48 ) $ (102 ) Net income (loss) attributable to the affiliated companies $ 114 $ (15 ) $ 70 Corning’s equity in earnings (losses) of affiliated companies $ 35 $ (25 ) $ 17 Related party transactions: Corning sales to affiliated companies $ 312 $ 253 $ 277 Corning purchases from affiliated companies $ 12 $ 8 $ 12 Corning transfers of assets, at cost, to affiliated companies $ 1 $ 9 $ 8 Dividends received from affiliated companies $ 6 $ 1 $ 106 Intercompany sales within HSG (included in net sales) $ 55 $ 112 2021 2020 Balance sheet: Current assets $ 648 $ 534 Noncurrent assets $ 549 $ 466 Short-term borrowings, including current portion of long-term debt $ 6 $ 2 Other current liabilities $ 159 $ 164 Long-term debt $ 58 $ 60 Other long-term liabilities $ 66 $ 11 Related party transactions: Balances due from affiliated companies $ 38 $ 36 Balances due to affiliated companies $ 1 $ 1 ( 1 The year ended December 31, 2020, September 8, 2020. September 9, 2020. As of December 31, 2021 2020 not Hemlock Semiconductor Group ( HSG ) In 2016, one On September 9, 2020, Through the agreements, HSG acquired DuPont’s TCS manufacturing assets, which were determined to be a business and recorded as a business combination. The fair value of the purchase price was $255 million. In conjunction with this acquisition, HSG settled the pre-existing TCS relationship (“TCS Settlement”) for a contractual amount of $175 million, which was determined to have a fair value of $200 million. HSG is paying for the TCS Settlement over three December 31, 2020. HSG also completed the Redemption, redeeming Dupont’s entire ownership of HSG with a value of $250 million. The Redemption was funded with HSG’s existing cash on-hand of $75 million and its newly obtained third September 8, 2021. December 31, 2021, third Upon completion of the Redemption, Corning obtained a 100% interest in HS LLC and an 80.5% interest in HSO LLC. Corning accounted for the Redemption under the acquisition method of accounting in accordance with business combinations without the transfer of net cash consideration. The Redemption price of $250 million approximated the fair value of Corning’s equity interest in HSG immediately preceding the Redemption. See Note 4 HSG’s results of operations and balance sheet as of September 8, 2020 2020 2019 Statement of operations: Net sales $ 423 $ 779 Gross profit $ 87 $ 9 Net income (loss) (1) $ 11 $ (117 ) Net income attributable to HSG $ 44 $ 54 Corning’s equity in earnings of affiliated companies $ 22 $ 27 Related party transactions: Dividends received from affiliated companies $ 100 Intercompany sales within HSG (included in net sales) $ 55 $ 112 2020 Balance sheet: Current assets $ 853 Noncurrent assets $ 725 Short-term borrowings, including current portion of long-term debt $ 178 Other current liabilities $ 337 Long-term debt $ 6 Other long-term liabilities $ 1,499 Non-controlling interest $ 9 Related party transactions: Intercompany receivables and payables within HSG (included in current assets and other current liabilities) $ 8 ( 1 HSG’s net income for the period ended September 8, 2020, second 2020, third 2020,

Note 4 - HSG Transactions and A

Note 4 - HSG Transactions and Acquisitions	12 Months Ended
	Dec. 31, 2021
Notes to Financial Statements
Business Combination Disclosure [Text Block]	4. HSG Transactions On September 9, 2020, On September 9, 2020, The fair value of Corning’s equity interest in HSG was estimated by applying the income approach, which was based on significant assumptions such as projected revenue and discount rate. The Company used a discount rate of 16.5% and terminal growth rate of zero. As no Corning recognized a pre-tax gain of $498 million on its previously held equity investment in HSG as a result of the consolidation resulting from the Redemption. The gain was calculated based on the difference between the fair value and carrying value of the equity method investment immediately preceding the Redemption and included in the transaction-related gain, net in Corning’s consolidated statements of income for the year ended December 31, 2020. The net gain on previously owned equity was calculated as follows (in millions): Fair value of previously held equity investment $ 250 Equity investment liability balance as of acquisition date (248 ) Corning's gain on previously held equity investment $ 498 The following table summarizes the amounts of recorded assets acquired and liabilities assumed on September 9, 2020, Recognized amounts of identified assets and liabilities recorded at fair value (in millions): Inventory $ 503 Property, plant and equipment 651 Intangible assets 285 Other current and non-current assets (1) 173 Short-term borrowings (178 ) Trade payables and other accrued liabilities (329 ) Other liabilities (1,261 ) Total identified net liabilities (156 ) Non-controlling interests (2) (102 ) Total fair value of Corning's previously held equity investment (2) (250 ) Goodwill (3) $ 508 ( 1 The other current and non-current assets included a contingent consideration asset of $20 million at fair value for a cost adjustment contract related to the TCS Transaction. Refer to Note 16 ( 2 The purchase price used to measure the goodwill of the Redemption is $352 million, including the fair value of Corning’s previously held equity interest and non-controlling interest, in the amount of $250 million and $102 million, respectively. ( 3 The goodwill recognized is not 20 Upon completion of the Redemption and resulting consolidation, Corning recorded assets acquired and liabilities assumed from HSG, including a customer deposit liability and deferred revenue. Corning recorded a customer deposit liability of $264 million at the fair value of refundable payments that HSG received from a customer under a long-term supply agreement. The discount rates used to calculate the present value of the customer deposit range from 2.54% to 3.23%. The deposits will be repaid from 2029 2034 Corning also recorded deferred revenue of $1,070 million at fair value related to the performance obligations of non-refundable consideration previously received by HSG from its customers under long term supply agreements. The fair values of deferred revenue were estimated by applying a bottoms-up cost buildup method of the cost approach based on significant inputs such as the cost to fulfill the obligations as well as key inputs including a normal profit margin. The goodwill is primarily related to other intangibles and synergies of the acquired business which do not December 31, 2020, The fair value of the non-controlling interest in HSG was estimated to be $102 million by applying the income approach, using the same key assumptions as the estimate of fair value for Corning’s equity interest in HSG. Since September 9, 2020, not December 31, 2021 2020. Acquisitions There were no 2021, 2020 2019.

Note 5 - Revenue

Note 5 - Revenue	12 Months Ended
	Dec. 31, 2021
Notes to Financial Statements
Revenue from Contract with Customer [Text Block]	5. Product Revenue (Point in Time) 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 Revenue is measured as the amount of consideration expected to be received 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, 2021 2020 Other Revenue (Over Time) Corning’s revenue over time is mainly related to Telecommunications products, and comprised of design, installation, training and software maintenance services. The performance obligations under these contracts generally require services to be performed over time, resulting in either a straight-line amortization method or an input method using incurred and forecasted expense to predict revenue recognition patterns which follow satisfaction of the performance obligations. Corning’s other revenue is not Revenue Disaggregation Table The following table shows revenue by major product categories, similar to the 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 revenue is recognized at point in time when control transfers to the customer. Revenue by product category is as follows (in millions): Year ended December 31, 2021 2020 2019 Display products $ 3,666 $ 3,077 $ 3,180 Telecommunication products 4,349 3,563 4,064 Specialty glass products 2,008 1,884 1,594 Environmental substrate and filter products 1,584 1,333 1,440 Life science products 1,232 981 995 All Other (1) 1,243 465 230 Total Revenue $ 14,082 $ 11,303 $ 11,503 Impact of foreign currency movements (2) 38 44 153 Cumulative adjustment related to customer contract (3) 105 Net sales of reportable segments and All Other $ 14,120 $ 11,452 $ 11,656 ( 1 The Company obtained a controlling interest in HSG during the third 2020 September 9, 2020. ( 2 This amount primarily represents the impact of foreign currency adjustments in the Display Technologies segment. ( 3 Amount represents the negative impact of a cumulative adjustment to reduce revenue by $105 million recorded during the first 2020. Refer to Note 20 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 cost of fulfillment as a manufacturer of products is classified as inventory, fixed assets and intangible assets, which are accounted for under the respective guidance for those asset types. Other costs of contract fulfillment are immaterial due to the nature of the products and their respective manufacturing processes. Contract liabilities include deferred revenue, other advanced payments and customer deposits. Other advanced payments are not Customer Deposits As of December 31, 2021 2020 In the years ended December 31, 2021 2020 December 31, 2021 2020 Deferred Revenue As of December 31, 2021 2020 The 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 revenue is recognized from deferred revenue when control of the promised goods is transferred to the customer based upon the units shipped compared to the remaining contractual units. As of December 31, 2021 2020, Refer to Note 4 Practical Expedients and Exemptions The value of unsatisfied performance obligations is not one Shipping and handling fees are treated as fulfillment costs and not Significant Customers For 2021 2020 2019 no 10%

Note 6 - Inventories, Net

Note 6 - Inventories, Net	12 Months Ended
	Dec. 31, 2021
Notes to Financial Statements
Inventory Disclosure [Text Block]	6. Inventories, net, are comprised of the following (in millions): December 31, 2021 2020 Finished goods $ 1,190 $ 1,236 Work in process 358 357 Raw materials and accessories 427 370 Supplies and packing materials 506 475 Total inventories, net $ 2,481 $ 2,438

Note 7 - Leases

Note 7 - Leases	12 Months Ended
	Dec. 31, 2021
Notes to Financial Statements
Lessee, Operating And Finance Leases [Text Block]	7. Corning has operating and finance leases for real estate, vehicles, and equipment. The following table shows components of lease expense (in millions): Year ended December 31, 2021 2020 Finance: Depreciation of right-of-use assets $ 17 $ 15 Interest on lease liabilities 8 7 Total finance lease expense $ 25 $ 22 Operating lease expense $ 139 $ 133 Variable lease expense 59 41 Short-term lease expense 2 4 Total lease expense $ 225 $ 200 The following table shows components of cash paid for amounts included in the measurement of lease liabilities (in millions) ( 1 December 31, 2021 2020 Finance: Principal $ 13 $ 10 Interest 8 7 Total finance lease payments $ 21 $ 17 Operating lease payments $ 134 $ 121 Total lease payments $ 155 $ 138 ( 1 Principle payments for finance leases have been classified as an investing outflow, and cash payments for operating leases, along with interest payments for finance leases, have been classified as an operating outflow on the consolidated statements of cash flows. Supplemental balance sheet information related to leases was as follows (in millions, except lease term and discount rate): December 31, 2021 2020 Operating Leases: Operating lease right-of-use assets, net (1) $ 741 $ 680 Other current liabilities $ 94 $ 96 Operating lease liabilities (2) 691 633 Total operating lease liabilities $ 785 $ 729 Finance Leases: Property and equipment, at cost $ 200 $ 184 Accumulated depreciation (40 ) (27 ) Property and equipment, net $ 160 $ 157 Current portion of long-term debt $ 15 $ 10 Long-term debt 168 163 Total finance lease liabilities $ 183 $ 173 ( 1 Included in other assets. ( 2 Included in other liabilities. The weighted average remaining lease terms and weighted average discount rates for operating and finance leases, respectively, are 12.9 years and 15.0 years and 4.0% and 4.4%, respectively. As of December 31, 2021 2022 2023 2024 2025 2026 After 2026 Gross Total Imputed Discount Total Operating leases $ 103 $ 110 $ 97 $ 85 $ 78 $ 553 $ 1,026 $ (241 ) $ 785 Finance leases 22 27 21 15 32 142 259 (76 ) 183 As of December 31, 2021 not 2022 2023

Note 8 - Income Taxes

Note 8 - Income Taxes	12 Months Ended
	Dec. 31, 2021
Notes to Financial Statements
Income Tax Disclosure [Text Block]	8. Income before income taxes follows (in millions): Year ended December 31, 2021 2020 2019 U.S. companies $ 1,254 $ (71 ) $ 504 Non-U.S. companies 1,143 694 712 Income before income taxes $ 2,397 $ 623 $ 1,216 The current and deferred amounts of the provision for income taxes are as follows (in millions): Year ended December 31, 2021 2020 2019 Current: Federal $ (172 ) $ 88 $ (82 ) State and municipal (13 ) (16 ) (12 ) Foreign (290 ) (203 ) (354 ) Deferred: Federal (97 ) 7 64 State and municipal (7 ) 3 13 Foreign 88 10 115 Provision for income taxes $ (491 ) $ (111 ) $ (256 ) Amounts are reflected in the preceding tables based on the location of the taxing authorities. Reconciliation of the U.S. statutory income tax rate to the effective tax rate for operations is as follows: Year ended December 31, 2021 2020 2019 Statutory U.S. income tax rate 21.0 % 21.0 % 21.0 % State income tax, net of federal effect 1.0 1.4 0.6 Global intangible low-taxed income 0.2 (0.5 ) 1.2 Foreign derived intangible income (1.3 ) (8.5 ) Remeasurement of deferred tax assets and liabilities (13.4 ) (0.6 ) Differential arising from foreign earnings (1) 2.0 15.2 5.4 IRS settlements & change in reserve 1.6 12.1 8.5 Valuation allowance (0.5 ) 2.5 (3.7 ) Tax credits (2.6 ) (29.7 ) (2.8 ) Stock compensation (1.5 ) (1.7 ) (0.6 ) Legal entity rationalization (2.2 ) Intercompany loan adjustment 6.2 (0.5 ) Non-deductible expenses 1.4 7.0 2.1 Other items, net (0.8 ) (0.1 ) (1.0 ) Effective income tax rate 20.5 % 17.8 % 21.1 % ( 1 Includes impact of intercompany asset sales. On September 9, 2020, Refer to Note 4 During 2021 December 31, 2021 The tax effects of temporary differences and carryforwards that gave rise to significant portions of the deferred tax assets and liabilities are as follows (in millions): December 31, 2021 2020 Loss and tax credit carryforwards $ 375 $ 637 Other assets 281 269 Asset impairments and restructuring reserves 30 29 Postretirement medical and life benefits 154 171 Other accrued liabilities 354 162 Other employee benefits 329 337 Gross deferred tax assets 1,523 1,605 Valuation allowances (138 ) (167 ) Total deferred tax assets 1,385 1,438 Intangible and other assets (103 ) (95 ) Fixed assets (300 ) (375 ) Finance leases (174 ) (160 ) Total deferred tax liabilities (577 ) (630 ) Net deferred tax assets $ 808 $ 808 The net deferred tax assets in the consolidated balance sheets are as follows (in millions): December 31, 2021 2020 Deferred tax assets $ 1,066 $ 1,121 Other liabilities (258 ) (313 ) Net deferred tax assets $ 808 $ 808 Details on deferred tax assets for loss and tax credit carryforwards are as follows (in millions): Expiration Amount 2022-2026 2027-2031 2032-2041 Indefinite Net operating losses $ 303 $ 102 $ 16 $ 41 $ 144 Tax credits 72 7 1 59 5 Balance as of December 31, 2021 $ 375 $ 109 $ 17 $ 100 $ 149 Details of the deferred tax valuation allowances are as follows (in millions): Deferred Tax Valuation Allowance Balance at Additions Net deductions Balance at Year ended December 31, 2021 $ 167 $ 13 $ 42 $ 138 Year ended December 31, 2020 $ 215 $ 27 $ 75 $ 167 Year ended December 31, 2019 $ 317 $ 10 $ 112 $ 215 The following is a tabular reconciliation of the total amount of unrecognized tax benefits (in millions): 2021 2020 2019 Balance at January 1 $ 131 $ 62 $ 435 Additions based on tax positions related to the current year 54 19 3 Additions for tax positions of prior years 17 53 2 Reductions for tax positions of prior years (21 ) Settlements and lapse of statute of limitations (3 ) (3 ) (378 ) Balance at December 31 $ 178 $ 131 $ 62 During 2020, 2015 2018. 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 at December 31, 2021, 2020 2019 Accrued interest and penalties associated with uncertain tax positions are recognized as part of tax expense. For the years ended December 31, 2021, 2020 2019 not It is possible that the amount of unrecognized tax benefits will change due to one twelve December 31, 2021 not twelve Corning Incorporated, as the common parent company, and all 80% December 31, 2012. 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 2008 2012 2015 2013 CPM (“Corning Precision Materials”), a South Korean subsidiary, is currently appealing certain tax assessments and tax refund claims for tax years 2010 2018. not December 31, 2021 December 31, 2020

Note 9 - Property, Plant and Eq

Note 9 - Property, Plant and Equipment, Net of Accumulated Depreciation	12 Months Ended
	Dec. 31, 2021
Notes to Financial Statements
Property, Plant and Equipment Disclosure [Text Block]	9. Property, plant and equipment, net of accumulated depreciation follow (in millions): December 31, 2021 2020 Land $ 441 $ 471 Buildings 6,145 6,453 Equipment 21,208 20,563 Construction in progress 1,979 1,918 Subtotal 29,773 29,405 Accumulated depreciation (13,969 ) (13,663 ) Total $ 15,804 $ 15,742 Approximately $36 million, $58 million and $54 million of interest costs were capitalized as part of property, plant and equipment, net of accumulated depreciation, in 2021 2020 2019 Manufacturing equipment includes certain components of production equipment that are constructed of precious metals. At December 31, 2021 2020 December 31, 2021, 2020 2019

Note 10 - Goodwill and Other In

Note 10 - Goodwill and Other Intangible Assets	12 Months Ended
	Dec. 31, 2021
Notes to Financial Statements
Goodwill and Intangible Assets Disclosure [Text Block]	10. Goodwill Goodwill is the excess of cost of an acquired entity over the amounts assigned to assets acquired and liabilities assumed in a business combination. Goodwill relates, and is assigned directly, to a specific reporting unit. Reporting units are either operating segments or one may three no not The qualitative process includes an extensive review of expectations for the long-term growth of our businesses and forecasted future cash flows. If we are required to perform the quantitative impairment analysis, our valuation method is an “income approach” using a discounted cash flow model in which cash flows anticipated over several periods, plus a terminal value at the end of that time horizon, are discounted to their present value using an appropriate rate of return. Our estimates are based upon historical experience, current knowledge from our commercial relationships, and available external information about future trends. If the fair value is less than the carrying value, a loss is recorded to reflect the difference between the fair value and carrying value. The most recent quantitative test was performed in 2020, Changes in the carrying amount of goodwill for the twelve December 31, 2021 2020 Display Technologies Optical Communications Specialty Materials Life Sciences All Other Total Balance at December 31, 2019 $ 129 $ 931 $ 150 $ 616 $ 109 $ 1,935 Acquired goodwill (1) 495 495 Foreign currency translation adjustment and other 3 12 2 13 30 Balance at December 31, 2020 $ 132 $ 943 $ 150 $ 618 $ 617 $ 2,460 Foreign currency translation adjustment and other (7 ) (28 ) (2 ) (2 ) (39 ) Balance at December 31, 2021 $ 125 $ 915 $ 150 $ 616 $ 615 $ 2,421 ( 1 The Company obtained a controlling interest in HSG during the third 2020. 4 Corning’s gross goodwill balance and accumulated impairment losses were $8.9 billion and $6.5 billion, respectively, for the year ended December 31, 2021 December 31, 2020 Other Intangible Assets Other intangible assets were as follows (in millions): December 31, 2021 2020 Gross Accumulated amortization Net Gross Accumulated amortization Net Amortized intangible assets: Patents, trademarks & trade names $ 498 $ 279 $ 219 $ 500 $ 255 $ 245 Customer lists and other (1) 1,464 535 929 1,517 454 1,063 Total $ 1,962 $ 814 $ 1,148 $ 2,017 $ 709 $ 1,308 ( 1 Other is comprised of intangible assets related to developed technologies and intellectual know-how. Corning’s amortized intangible assets are primarily related to the Optical Communications and Life Sciences segments and “All Other”. The net carrying amount of intangible assets decreased during the year, primarily driven by amortization of $129 million, disposals of $24 million and foreign currency translation and other adjustments of $7 million. Amortization expense related to all intangible assets is expected to be approximately $120 million annually for years 2022 2026.

Note 11 - Other Assets and Othe

Note 11 - Other Assets and Other Liabilities	12 Months Ended
	Dec. 31, 2021
Notes to Financial Statements
Other Assets and Other Liabilities Disclosure [Text Block]	11. Other assets were as follows (in millions): December 31, 2021 2020 Current assets: Derivative instruments (Note 15) $ 336 $ 148 Other current assets 690 613 Other current assets $ 1,026 $ 761 Non-current assets: Derivative instruments (Note 15) $ 164 $ 123 South Korean tax deposits 350 365 Operating leases (Note 7) 741 680 Investments (Note 3) 318 435 Other non-current assets 483 537 Other assets $ 2,056 $ 2,140 South Korean tax deposits CPM is currently appealing certain tax assessments and tax refund claims for tax years 2010 2018. not 8 Other liabilities were as follows (in millions): December 31, 2021 2020 Current liabilities: Wages and employee benefits $ 824 $ 572 Income taxes 196 173 Derivative instruments (Note 15) 144 189 Deferred revenue (Note 5) 148 152 Settlement liability (Note 4) 58 58 Customer deposits (Note 5) 223 211 Share repurchase liability (Note 17) 506 Short-term leases (Note 7) 94 96 Other current liabilities 946 986 Other accrued liabilities $ 3,139 $ 2,437 Non-current liabilities: Defined benefit pension plan liabilities $ 707 $ 887 Derivative instruments (Note 15) 49 155 Deferred revenue (Note 5) 764 872 Settlement liability (Note 4) 58 117 Customer deposits (Note 5) 1,072 1,148 Share repurchase liability (Note 17) 517 Deferred tax liabilities 258 313 Long-term leases (Note 7) 691 633 Asbestos and other litigation 35 94 Other non-current liabilities 1,041 798 Other liabilities $ 5,192 $ 5,017

Note 12 - Debt

Note 12 - Debt	12 Months Ended
	Dec. 31, 2021
Notes to Financial Statements
Debt Disclosure [Text Block]	12. (In millions) December 31, 2021 2020 Current portion of long-term debt $ 55 $ 81 Short-term borrowings 75 Current portion of long-term debt and short-term borrowings $ 55 $ 156 Long-term debt Debentures, 8.875% $ 63 Debentures, 2.90% 374 Debentures, 3.70% 249 Medium-term notes, average rate 7.66% $ 45 45 Debentures, 3.90% 395 394 Debentures, 5.45% 1,086 1,084 Yen-denominated debentures, 0.698% 182 203 Yen-denominated debentures, 0.722% 87 96 Yen-denominated debentures, 0.992% 407 453 Yen-denominated debentures, 1.043% 264 293 Yen-denominated debentures, 1.153% 270 301 Yen-denominated debentures, 1.513% 51 56 Debentures, 6.85% 160 161 Yen-denominated debentures, 1.219% 216 239 Debentures, callable, 7.25% 249 249 Debentures, 4.70% 296 296 Yen-denominated debentures, 1.583% 86 96 Debentures, 5.75% 396 396 Debentures, 4.75% 496 496 Debentures, 5.35% 544 543 Debentures, 4.375% 743 743 Debentures, 5.85% 297 296 Financing Leases, average discount rate 4.4% 183 173 Other, average rate 4.33% 591 598 Total long-term debt, including current portion 7,044 7,897 Less current portion of long-term debt 55 81 Long-term debt $ 6,989 $ 7,816 Based on borrowing rates currently available to us for loans with similar terms and maturities, the fair value of long-term debt was $8.3 billion and $9.4 billion at December 31, 2021 2020 December 31, 2021 December 31, 2020, 2 On a quarterly basis, Corning will recognize the foreign currency translation gains and losses resulting from changes in exchanges rates within accumulated other comprehensive loss in shareholders’ equity. Cash proceeds from loans and debt issuances are disclosed as financing activities, and cash payments for interest and bond redemptions are disclosed as operating activities and financing activities, respectively, in the consolidated statements of cash flows. Corning did not December 31, 2021 2020 Corning maintains a revolving credit agreement (the “Revolving Credit Agreement”) which provides a committed $1.5 billion unsecured multi-currency line of credit and expires on August 15, 2023. December 31, 2021 no The following table shows debt maturities by year at December 31, 2021 ( 1 2022 2023 2024 2025 2026 Thereafter $ 55 141 $ 293 $ 166 $ 36 $ 6,353 ( 1 Excludes interest rate swap gains, bond discounts and deferred expenses. Debt Issuances and Repayments 2021 In the third 2021, 2023, In the second 2021, 2022, Losses on bond redemption have been recorded in other income (expense), net on the consolidated statements of income during the quarter in which they occurred. Borrowings under the three December 31, 2021, As of December 31, 2021, not 2020 During the fourth 2020, 2024 In conjunction with the change in control of HSG on September 9, 2020, September 8, 2021, December 31, 2021, third 3 During the second 2020, three December 31, 2020, not In the first 2020, two five fourth 2020, third five December 31, 2020, not not

Note 13 - Employee Retirement P

Note 13 - Employee Retirement Plans	12 Months Ended
	Dec. 31, 2021
Notes to Financial Statements
Retirement Benefits [Text Block]	13. Defined Benefit Plans Corning has defined benefit pension plans covering certain domestic and international employees. The Company’s funding policy has been to contribute, as necessary, an amount exceeding the minimum requirements to achieve the Company’s long-term funding targets. In 2021 2020 2022 Corning offers postretirement plans that provide health care and life insurance benefits for retirees and eligible dependents. Certain employees may 2021 2020. 2005 65 2008 65 2010. January 1, 2007 Obligations and Funded Status The change in benefit obligation and funded status of our defined benefit pension and post-retirement benefit plans are as follows (in millions): Domestic pension benefits International pension benefits Postretirement benefits December 31, 2021 2020 2021 2020 2021 2020 Change in benefit obligation Benefit obligation at beginning of year $ 4,203 $ 3,856 $ 778 $ 725 $ 764 $ 705 Service cost 102 92 25 26 10 9 Interest cost 78 110 10 12 15 20 Plan participants’ contributions 1 7 8 Plan amendments 1 Actuarial (gain) loss (107 ) 329 (17 ) 29 (105 ) 58 Other 8 (2 ) (37 ) 2 Benefits paid (201 ) (194 ) (26 ) (19 ) (37 ) (38 ) Foreign currency translation (32 ) 42 Benefit obligation at end of year $ 4,075 $ 4,203 $ 736 $ 778 $ 654 $ 764 Change in plan assets Fair value of plan assets at beginning of year $ 3,575 $ 3,153 $ 598 $ 518 $ 30 Actual gain (loss) on plan assets 208 420 (2 ) 49 Employer contributions 16 195 31 50 9 $ 60 Plan participants’ contributions 1 7 8 Benefits paid (201 ) (194 ) (26 ) (44 ) (37 ) (38 ) Foreign currency translation (17 ) 25 Fair value of plan assets at end of year $ 3,598 $ 3,575 $ 584 $ 598 $ 9 $ 30 Funded status at end of year Fair value of plan assets $ 3,598 $ 3,575 $ 584 $ 598 $ 9 $ 30 Benefit obligations (4,075 ) (4,203 ) (736 ) (778 ) (654 ) (764 ) Funded status of plans $ (477 ) $ (628 ) $ (152 ) $ (180 ) $ (645 ) $ (734 ) Amounts recognized in the consolidated balance sheets consist of: Noncurrent asset $ 100 $ 99 Current liability $ (15 ) $ (13 ) (7 ) (7 ) $ (23 ) $ (7 ) Noncurrent liability (462 ) (615 ) (245 ) (272 ) (622 ) (727 ) Recognized liability $ (477 ) $ (628 ) $ (152 ) $ (180 ) $ (645 ) $ (734 ) Amounts recognized in accumulated other comprehensive loss consist of: Net actuarial loss (gain) $ 272 $ 387 $ (3 ) $ 7 $ (22 ) $ 86 Prior service cost (credit) 22 26 1 1 (20 ) (26 ) Amounts recognized at end of year $ 294 $ 413 $ (2 ) $ 8 $ (42 ) $ 60 Across total pension benefits, an actuarial gain of $124 million was recognized in 2021 2020 December 31, 2021 2020 For postretirement benefits, an actuarial gain of $105 million was recognized in 2021 2020 The following information is presented for pension plans where the projected benefit obligation or the accumulated benefit obligation exceeded the fair value of plan assets (in millions): December 31, 2021 2020 Projected benefit obligation $ 4,358 $ 4,665 Fair value of plan assets $ 3,627 $ 3,758 Accumulated benefit obligation $ 4,110 $ 4,247 Fair value of plan assets $ 3,627 $ 3,603 The components of net periodic benefit (income) expense for employee retirement plans are presented in the following tables (in millions): Domestic pension benefits International pension benefits Postretirement benefits December 31, 2021 2020 2019 2021 2020 2019 2021 2020 2019 Service cost $ 102 $ 92 $ 76 $ 25 $ 26 $ 25 $ 10 $ 9 $ 9 Interest cost 78 110 133 10 12 15 15 20 27 Expected return on plan assets (209 ) (186 ) (161 ) (7 ) (9 ) (10 ) Amortization of prior service cost (credit) 4 6 7 (1 ) (1 ) (1 ) (6 ) (5 ) (7 ) Amortization of actuarial loss (gain) 2 1 (1 ) Recognition of actuarial loss 10 12 66 1 10 24 Total net periodic benefit (income) expense $ (15 ) $ 34 $ 121 $ 28 $ 38 $ 53 $ 21 $ 25 $ 28 Special termination benefit charge 8 6 1 1 Total (income) expense $ (15 ) $ 42 $ 127 $ 28 $ 38 $ 53 $ 21 $ 26 $ 29 Other changes in plan assets and benefit obligations recognized in other comprehensive (loss) income: Curtailment effects $ (4 ) Current year actuarial (gain) loss $ (105 ) $ 94 $ 47 $ (7 ) (11 ) $ 41 $ (105 ) $ 58 $ 6 Amortization of actuarial (loss) gain (2 ) (1 ) 1 Recognition of actuarial loss (10 ) (12 ) (66 ) (1 ) (10 ) (24 ) Current year prior service cost 1 5 Amortization of prior service (cost) credit (4 ) (6 ) (7 ) 1 1 1 6 $ 5 7 Total recognized in other comprehensive (loss) income $ (119 ) $ 77 $ (26 ) $ (7 ) $ (24 ) $ 18 $ (101 ) $ 62 $ 19 The components of net periodic benefit (income) expense, other than the service cost component, are included in the line item other income (expense), net, in the consolidated statements of income. 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 2020 2012 2020 December 31, 2020, no 2021. Measurement of postretirement benefit expense is based on assumptions used to value the postretirement benefit obligation at the beginning of the year. The weighted-average assumptions used to determine benefit obligations were as follows: Pension benefits Domestic International Postretirement benefits 2021 2020 2019 2021 2020 2019 2021 2020 2019 Discount rate 2.87 % 2.50 % 3.28 % 1.20 % 1.02 % 1.34 % 2.99 % 2.69 % 3.41 % Rate of compensation increase 3.50 % 4.16 % 3.50 % 3.63 % 3.55 % 2.96 % Cash balance crediting rate 3.86 % 3.84 % 3.94 % 0.91 % 0.94 % 0.97 % Employee contributions crediting rate 1.57 % 0.62 % 2.03 % The weighted-average assumptions used to determine net periodic benefit (income) expense were as follows: Pension benefits Domestic International Postretirement benefits 2021 2020 2019 2021 2020 2019 2021 2020 2019 Discount rate 2.50 % 3.28 % 4.28 % 1.02 % 1.34 % 1.96 % 2.69 % 3.41 % 4.33 % Expected return on plan assets 6.00 % 6.00 % 6.00 % 1.26 % 1.71 % 2.01 % Rate of compensation increase 4.16 % 3.50 % 3.50 % 3.55 % 2.96 % 2.96 % Cash balance crediting rate 3.84 % 3.94 % 3.94 % 0.94 % 0.97 % 0.97 % Employee contributions crediting rate 0.62 % 2.03 % 3.47 % Assumed health care trend rates are as follows: Assumed health care trend rates at December 31 2021 2020 Health care cost trend rate assumed for next year 6.25 % 6.50 % Rate that the cost trend rate gradually declines to 5 % 5 % Year that the rate reaches the ultimate trend rate 2027 2027 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 40% which includes large, mid and small-cap companies and investments in both developed and emerging markets. The target allocation for bond investments is 60%, 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 tables provide fair value measurement information for the Company’s major categories; Level 1 2 3 December 31, 2021 December 31, 2020 (in millions) Total (Level 1) (Level 2) (Level 3) Total (Level 1) (Level 2) (Level 3) Equity securities: U.S. companies $ 977 $ 20 $ 957 $ 781 $ 1 $ 780 International companies 234 234 441 441 Fixed income: U.S. treasury bonds 256 256 147 147 U.S. corporate bonds 1,770 1,770 1,951 1,951 Preferred securities 11 11 11 11 Private equity (1) 41 $ 41 51 $ 51 Real estate (2) 10 10 140 140 Cash equivalents 308 308 83 83 Total $ 3,607 $ 584 $ 2,972 $ 51 $ 3,605 $ 231 $ 3,183 $ 191 ( 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 tables provide fair value measurement information for the Company’s major categories; Level 1 2 3 December 31, 2021 December 31, 2020 (in millions) Total (Level 1) (Level 2) (Level 3) Total (Level 1) (Level 2) (Level 3) Fixed income: International fixed income $ 500 $ 416 $ 84 $ 519 $ 426 $ 93 Insurance contracts 2 $ 2 3 $ 3 Mortgages 22 22 20 20 Cash equivalents 60 60 56 56 Total $ 584 $ 476 $ 84 $ 24 $ 598 $ 482 $ 93 $ 23 The following table sets forth a summary of changes in the fair value of the defined benefit plans Level 3 Level 3 assets – domestic Level 3 assets – international (in millions) Private equity Real estate Mortgages Insurance contracts Balance at December 31, 2019 $ 64 $ 145 $ 21 $ 2 Actual return on plan assets relating to assets still held at the reporting date 4 Asset (sales) purchases (17 ) (5 ) (1 ) 1 Balance at December 31, 2020 $ 51 $ 140 $ 20 $ 3 Actual return on plan assets relating to assets still held at the reporting date 21 1 2 Actual return on plan assets relating to assets sold during the reporting period 4 Asset sales (31 ) (135 ) (1 ) Balance at December 31, 2021 $ 41 $ 10 $ 22 $ 2 Credit Risk 56% of domestic plan assets are invested in long duration bonds. The average rating for these bonds is A. 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. Currency Risk 6% of domestic assets are valued in non-U.S. dollar denominated investments that are subject to currency fluctuations. The value of these securities will decline if the U.S. dollar increases in value relative to the value of the currencies in which these investments are denominated. Liquidity Risk 1% of the domestic securities are invested in Level 3 may not At December 31, 2021 2020 not Cash Flow Data The following reflects the gross benefit payments that are 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 2022 $ 232 $ 28 $ 33 2023 $ 233 $ 34 $ 33 2024 $ 242 $ 33 $ 33 2025 $ 251 $ 36 $ 33 2026 $ 254 $ 40 $ 33 2027-2031 $ 1,333 $ 221 $ 166 Other Benefit Plans Corning offers defined contribution plans covering employees meeting certain eligibility requirements. Total consolidated defined contribution plan expense was $98 million, $76 million and $108 million for the years ended December 31, 2021, 2020 2019

Note 14 - Commitments, Continge

Note 14 - Commitments, Contingencies and Guarantees	12 Months Ended
	Dec. 31, 2021
Notes to Financial Statements
Commitments and Contingencies Disclosure [Text Block]	14. The amounts of obligations are as follows (in millions): Amount of commitment and contingency expiration per period Total Less than 1 year 1 to 3 years 3 to 5 years 5 years and thereafter Performance bonds and guarantees $ 215 $ 41 $ 77 $ 3 $ 94 Stand-by letters of credit (1) 69 43 17 9 Subtotal of commitment expirations per period $ 284 $ 84 $ 94 $ 3 $ 103 Purchase obligations (2) $ 994 $ 232 $ 219 $ 111 $ 432 Capital expenditure obligations (3) 357 357 Debentures (4) 6,315 227 87 6,001 Finance leases and financing obligations 729 55 207 115 352 Interest on debentures (5) 8,306 265 523 519 6,999 Imputed interest on finance leases and financing obligations 271 32 53 39 147 Operating lease obligations 1,026 103 207 163 553 Uncertain tax positions (6) 80 9 12 51 8 Subtotal of contractual obligation payments due by period $ 18,078 $ 1,053 $ 1,448 $ 1,085 $ 14,492 Total commitments and contingencies $ 18,362 $ 1,137 $ 1,542 $ 1,088 $ 14,595 ( 1 At December 31, 2021 ( 2 Purchase obligations are enforceable and legally binding obligations which primarily consist of raw material and energy-related take-or-pay contracts. ( 3 Capital expenditure obligations primarily reflect amounts associated with capital expansion activities. ( 4 Debentures are stated at maturity value and excludes interest rate swap gains or losses and bond discounts. ( 5 The estimate of interest payments assumes interest is paid through the date of maturity or expiration of the related debt, based upon stated rates in the respective debt instruments. ( 6 At December 31, 2021 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 Product warranty liability accruals at December 31, 2021 2020 The ability of certain subsidiaries and affiliated companies to transfer funds is limited by provisions of foreign government regulations, affiliate agreements and certain loan agreements. At December 31, 2021 not not 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, Dow Corning Breast Implant Litigation In May 1995, June 1, 2004, 11 Under the terms of the Plan, Dow Corning has established and funded a Settlement Trust and a Litigation Facility, referred to above, to provide a means for tort claimants to settle or litigate their claims. Inclusive of insurance, Dow Corning has paid approximately $1.8 billion to the Settlement Trust. As of May 31, 2016, may December 31, 2021 not Dow Corning Bankruptcy Pendency Interest Claims As a separate matter arising from the bankruptcy proceedings, Dow Corning has been defending claims asserted by commercial creditors who claimed additional compounded interest at default and state statutory judgment rates as well as attorneys’ fees and other enforcement costs, during the period from May 1995 June 2004. May 31, 2016, September 30, 2019 not Dow Corning Environmental Claims In September 2019, may December 31, 2021 not Environmental Litigation Corning has been named by the Environmental Protection Agency (the "Agency") under the Superfund Act, or by state governments under similar state laws, as a potentially responsible party for 15 active hazardous waste sites. Under the Superfund Act, all parties who may December 31, 2021 2020

Note 15 - Hedging Activities

Note 15 - Hedging Activities	12 Months Ended
	Dec. 31, 2021
Notes to Financial Statements
Derivative Instruments and Hedging Activities Disclosure [Text Block]	15. Corning is primarily exposed to foreign currency risks due to fluctuations in exchange rates. These fluctuations affect the Company's financial instruments and transactions denominated in foreign currencies, which impact earnings. The most significant foreign currency exposures relate to the Japanese yen, South Korean won, new Taiwan dollar, Chinese yuan, the euro and British pound. Corning seeks to mitigate the impact of exchange rate movements in our 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 Designated Hedges Corning uses OTC foreign exchange forward contracts designated as cash flow hedges to reduce the risk that movements in exchange rates will adversely affect the net cash flows resulting from the sale of products to customers and purchases from suppliers. The total gross notional values for foreign currency cash flow hedges are $780 million and $1.1 billion at December 31, 2021 2020, 2022 2023. December 31, 2021, 12 In 2021, 2025. not December 31, 2021. 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. 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 Japanese yen with maturities spanning years 2022 2024. The following table summarizes the total gross notional value for translated earnings contracts at December 31, 2021 2020 Year ended December 31, 2021 2020 Average rate forward contracts: Japanese yen-denominated $ 2.9 $ 4.5 South Korean won-denominated 1.2 0.4 Euro-denominated 0.2 0.5 Other foreign currencies (1) 0.1 0.1 Option contracts: Japanese yen-denominated (2) 3.6 2.0 Other foreign currencies (3) 0.9 Total gross notional value outstanding $ 8.9 $ 7.5 ( 1 Denominated currencies for average rate forward contracts include the Chinese yuan and British pound. ( 2 Japanese yen-denominated option contracts include zero zero zero ( 3 Other foreign currencies option contracts are purchased basket options that include a basket of underlying currencies, including the Japanese yen, South Korean won, Chinese yuan, euro, and British pound, and each basket option will be settled against USD. 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 the derivative contracts are recorded currently in earnings in the translated earnings contract gain (loss), net line of the consolidated statements of income. The following table summarizes the notional amounts and respective fair values of Corning’s derivative financial instruments on a gross basis for December 31, 2021 2020 Asset derivatives Liability derivatives Notional amount Fair value Fair value 2021 2020 Balance sheet location 2021 2020 Balance sheet location 2021 2020 Derivatives designated as hedging instruments (1) Foreign exchange contracts and other $ 780 $ 1,143 Other current assets $ 49 $ 37 Other accrued liabilities $ (2 ) $ (3 ) Other assets 10 21 Other liabilities (9 ) (1 ) Derivatives not designated as hedging instruments Foreign exchange contracts 3,864 6,144 Other current assets 91 45 Other accrued liabilities (95 ) (76 ) Other assets 41 Other liabilities (59 ) Translated earnings contracts 8,899 7,453 Other current assets 196 66 Other accrued liabilities (47 ) (110 ) Other assets 154 61 Other liabilities (40 ) (95 ) Total derivatives $ 13,543 $ 14,740 $ 500 $ 271 $ (193 ) $ (344 ) ( 1 At December 31, 2021, December 31, 2020, The following tables summarize the effect on 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 at December 31, 2021 2020 Derivatives in hedging relationships Gain (loss) recognized in other comprehensive income (OCI) Location of gain (loss) reclassified from accumulated OCI into income Gain (loss) reclassified from accumulated OCI into income for cash flow and fair value hedges 2021 2020 2019 effective (ineffective) 2021 2020 2019 Net sales $ 14 $ (6 ) Cost of sales 39 13 $ 11 Foreign exchange contracts and other $ 47 $ (19 ) 72 Other expense, net (1) (14 ) Total cash flow and fair value hedges $ 47 $ (19 ) $ 72 $ 53 $ (7 ) $ 11 Gain (loss) recognized in income Undesignated derivatives Location of gain (loss) recognized in income 2021 2020 2019 Foreign exchange contracts Other income (expense), net (1) $ 38 $ (93 ) $ 21 Translated earnings contracts Translated earnings contract gain (loss), net 354 (38 ) 248 Total undesignated $ 392 $ (131 ) $ 269 ( 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 16 - Fair Value Measuremen

Note 16 - Fair Value Measurements	12 Months Ended
	Dec. 31, 2021
Notes to Financial Statements
Fair Value Disclosures [Text Block]	16. Fair value standards under U.S. GAAP define fair value, establish a framework for measuring fair value in applying generally accepted accounting principles, and require disclosures about fair value measurements. The standards also identify two one three The following tables provide fair value measurement information for the Company’s major categories of financial assets and liabilities measured on a recurring basis; Level 1, 2, 3, Fair value measurements at reporting date Fair value measurements at reporting date December 31, December 31, (in millions) 2021 (Level 1) (Level 2) (Level 3) 2020 (Level 1) (Level 2) (Level 3) Current assets: Other current assets (1)(2) $ 352 $ 10 $ 336 $ 6 $ 152 $ 148 $ 4 Non-current assets: Investments (3) $ 137 $ 137 Other assets (1) $ 175 $ 164 $ 11 $ 139 $ 123 $ 16 Current liabilities: Other accrued liabilities (1) $ 144 $ 144 $ 189 $ 189 Non-current liabilities: Other liabilities (1)(4) $ 66 $ 66 $ 155 $ 155 ( 1 Derivative assets and liabilities include foreign exchange contracts which are measured using observable inputs for similar assets and liabilities. ( 2 Equity securities with readily available fair values that were measured using Level 1 $84 December 31, 2021. ( 3 Included in investments as of December 31, 2020 1 $107 December 31, 2020. ( 4 Other liabilities as of December 31, 2021 $17 2 17 Assets and Liabilities Measured on a Non-Recurring Basis For the year ended December 31, 2020, $217 3 Refer to Note 2 Fair value measurements (Level 3 4 no December 31, 2021 2020

Note 17 - Shareholders' Equity

Note 17 - Shareholders' Equity	12 Months Ended
	Dec. 31, 2021
Notes to Financial Statements
Stockholders' Equity Note Disclosure [Text Block]	17. Equity Common Stock Dividends On February 2, 2022, first 2022. eleventh October 2011. On February 3, 2021, first 2021. On February 5, 2020, first 2020. Fixed Rate Cumulative Convertible Preferred Stock, Series A As of December 31, 2020, On January 16, 2021, April 5, 2021, Pursuant to the SRA, on the Initial Closing Date, the Preferred Stock was fully converted. Immediately following the conversion, Corning repurchased and retired 35 million of the Common Shares held by SDC for an aggregate purchase price of approximately $1.5 billion, of which approximately $507 million was paid on the Initial Closing Date. Subsequent payments of approximately $507 million will be paid on each of the first second • 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 on the Initial Closing Date. • The Common Shares repurchased were accounted for as a redemption of Preferred Stock. The excess of the $1.5 billion consideration paid over the carrying value of the Preferred Stock reduced the net income available to common shareholders by $803 million. 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 and 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, 2021, • The remaining 58 million shares of Common Shares are subject to a seven 2027. Refer to Note 16 Share Repurchases 2021 For the year ended December 31, 2021 2019 On April 8, 2021, 2018 2019 first second 2020 For the year ended December 31, 2020 2018 2019 On April 26, 2018, no “2018 July 17, 2019, no “2019 December 31, 2019 2018 The following table presents changes in capital stock (in millions): Common stock Treasury stock Shares Par value Shares Cost Balance at December 31, 2018 1,713 $ 857 (925 ) $ (18,870 ) Shares issued to benefit plans and for option exercises 5 2 Shares purchased for treasury (31 ) (925 ) Other, net (1) (17 ) Balance at December 31, 2019 1,718 $ 859 (956 ) $ (19,812 ) Shares issued to benefit plans and for option exercises 8 4 Shares purchased for treasury (4 ) (105 ) Other, net (1) (1 ) (11 ) Balance at 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 at December 31, 2021 1,815 $ 907 (970 ) $ (20,263 ) ( 1 Consists of tax withholdings on share repurchases. Accumulated Other Comprehensive Loss A summary of changes in the components of accumulated other comprehensive loss, including the proportionate share of equity method investee’s accumulated other comprehensive loss, is as follows (in millions) ( 1 Foreign currency translation adjustments and other Unamortized actuarial gains (losses) and prior service (costs) credits Net unrealized gains (losses) on investments Net unrealized gains (losses) on designated hedges Accumulated other comprehensive loss Balance at December 31, 2018 $ (714 ) $ (298 ) $ (4 ) $ 6 $ (1,010 ) Other comprehensive (loss) income before reclassifications (2) $ (129 ) $ (79 ) $ 1 $ 54 $ (153 ) Amounts reclassified from accumulated other comprehensive income (loss) (5) 15 (9 ) 6 Equity method affiliates (6) (14 ) (14 ) Net current-period other comprehensive (loss) income (143 ) (64 ) 1 45 (161 ) Balance at December 31, 2019 $ (857 ) $ (362 ) $ (3 ) $ 51 $ (1,171 ) Other comprehensive income (loss) before reclassifications (3) $ 511 $ (106 ) $ (14 ) $ 391 Amounts reclassified from accumulated other comprehensive income (loss) (5) 18 5 23 Equity method affiliates (6) 17 17 Net current-period other comprehensive income (loss) 528 (88 ) (9 ) 431 Balance at December 31, 2020 $ (329 ) $ (450 ) $ (3 ) $ 42 $ (740 ) Other comprehensive (loss) income before reclassifications (4) $ (582 ) $ 178 $ 43 $ (361 ) Amounts reclassified from accumulated other comprehensive (loss) income (5) (52 ) (52 ) Equity method affiliates (6) (22 ) (22 ) Net current-period other comprehensive (loss) income (604 ) 178 (9 ) (435 ) Balance at December 31, 2021 $ (933 ) $ (272 ) $ (3 ) $ 33 $ (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 $8 million, primarily driven by $7 million related to foreign currency translation adjustments; embedded in this number is the negative impact of $18 million related to the hedging component, offset by the positive impact of $19 million related to retirement plans. ( 3 Amounts are net of total tax expense of $22 million, primarily driven by $55 million related to foreign currency translation adjustments; embedded in this number are positive impacts of $5 million related to the hedging component and $28 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 effect of reclassifications are disclosed separately within the footnote. ( 6 Tax effects related to equity method affiliates are not (In millions) Reclassifications Out of Accumulated Other Comprehensive Income ("AOCI") by Component (1) Amount reclassified from AOCI Affected line item Year ended December 31, in the consolidated Details about AOCI Components 2021 2020 2019 statements of income Amortization of net actuarial loss $ (3 ) $ (23 ) $ (89 ) (2) Amortization of prior service credit (cost) 3 1 (2) (23 ) (88 ) Total before tax 5 73 Tax benefit (3) $ — $ (18 ) $ (15 ) Net of tax Realized gains (losses) on designated hedges $ 14 $ (6 ) Sales 39 13 $ 11 Cost of sales (14 ) Other expense, net 53 (7 ) 11 Total before tax (1 ) 2 (2 ) Tax benefit (expense) $ 52 $ (5 ) $ 9 Net of tax Total reclassifications for the period $ 52 $ (23 ) $ (6 ) Net of tax ( 1 Amounts in parentheses indicate debits to the statement of income. ( 2 These accumulated other comprehensive loss components are included in net periodic pension cost. Refer to Note 13 ( 3 Includes $52 million that was recognized during the first 2019

Note 18 - Earnings Per Common S

Note 18 - Earnings Per Common Share	12 Months Ended
	Dec. 31, 2021
Notes to Financial Statements
Earnings Per Share [Text Block]	18. Basic earnings per common share are computed by dividing 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 reconciliation of the amounts used to compute basic and diluted earnings per common share from operations is as follows (in millions, except per share amounts): Year ended December 31, 2021 2020 2019 Net income attributable to Corning Incorporated $ 1,906 $ 512 $ 960 Less: Series A convertible preferred stock dividend 24 98 98 Less: Excess consideration paid for redemption of preferred stock 803 Net income available to common shareholders - basic 1,079 414 862 Plus: Series A convertible preferred stock dividend 98 Net income available to common shareholders - diluted $ 1,079 $ 414 $ 960 Weighted-average common shares outstanding - basic 828 761 776 Effect of dilutive securities: Stock options and other dilutive securities 16 11 8 Series A convertible preferred stock (1) 115 Weighted-average common shares outstanding - diluted 844 772 899 Basic earnings per common share $ 1.30 $ 0.54 $ 1.11 Diluted earnings per common share $ 1.28 $ 0.54 $ 1.07 Anti-dilutive potential shares excluded from diluted earnings per common share: Series A convertible preferred stock dividend (1) 31 115 Employee stock options and awards 2 2 Total 31 117 2 ( 1 For the years ended December 31, 2021 2020, Fixed Rate Cumulative Convertible Preferred Stock, Series A As of December 31, 2020, On January 16, 2021, April 5, 2021, Pursuant to the SRA, on the Initial Closing Date, the Preferred Stock was fully converted into 115 million Common Shares. The Company repurchased 35 million of the converted Common Shares pursuant to the SRA and excluded them from the weighted-average common shares outstanding for the calculation of the Company’s basic and diluted earnings per share. The redemption of these Common Shares resulted in a reduction of retained earnings of $803 million which reduced the net income available to common shareholders. The remaining 80 million Common Shares are outstanding and are included in the weighted-average common shares outstanding for the calculation of the Company’s basic and diluted earnings per share. Refer to Note 17

Note 19 - Share-based Compensat

Note 19 - Share-based Compensation	12 Months Ended
	Dec. 31, 2021
Notes to Financial Statements
Share-based Payment Arrangement [Text Block]	19. Corning maintains long-term incentive plans (the “Plans”) for key employees and non-employee members of its Board of Directors. The Plans allow us to grant equity-based compensation awards, including stock options, stock appreciation rights, performance share units, restricted stock units, restricted stock awards or a combination of awards (collectively, share-based awards). At December 31, 2021 Share-based compensation cost is allocated to the selling, general and administrative, research, development and engineering, and cost of sales expense lines in the consolidated statements of income. Stock Compensation Plans The Company measures and recognizes compensation cost for all share-based payment awards made to employees and directors based on estimated fair values. The fair value of awards granted that are expected to ultimately vest is recognized as expense over the requisite service periods. The number of options expected to vest equals the total options granted less an estimation of the number of forfeitures expected to occur prior to vesting. The forfeiture rate is calculated based on 15 Total share-based compensation cost was approximately $190 million, $207 million and $56 million, respectively, for the years ended December 31, 2021, 2020 2019 The income tax benefit realized from share-based compensation was $37 million, $12 million and $9 million, respectively, for the years ended December 31, 2021, 2020 2019 8 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 market price on the grant date and generally become exercisable in installments from one five no The following table summarizes information concerning stock options outstanding, including the related transactions under the stock option plans for the year ended December 31, 2021 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, 2020 17,095 $ 21.60 Exercised (4,818 ) 19.85 Forfeited and expired (373 ) 21.40 Options outstanding as of December 31, 2021 11,904 22.31 6.59 $ 177,634 Options expected to vest as of December 31, 2021 11,830 22.32 6.57 176,328 Options exercisable as of December 31, 2021 6,573 21.19 5.42 105,412 The aggregate intrinsic value (market value of stock less option exercise price) in the preceding table represents the total pretax intrinsic value, based on the Company’s closing stock price on December 31, 2021 December 31, 2021 There were no options granted in 2021. December 31, 2020 2019 December 31, 2021, 2020 2019 December 31, 2021, 2020 2019 As of December 31, 2021 Proceeds received from the exercise of stock options were $97 million, with a corresponding realized tax benefit of $15 million, for the year ended December 31, 2021 December 31, 2021, 2020 2019 Corning uses a multiple-point Black-Scholes valuation model to estimate the fair value of stock option grants. Corning utilizes a blended approach for calculating the volatility assumption used in the multiple-point Black-Scholes valuation model defined as the weighted average of the short-term implied volatility, the most recent volatility for the period equal to the expected term, and the most recent 15 zero The following inputs were used for the valuation of option grants under the stock option plans awarded during 2020 2019: 2020 2019 Expected volatility 32.9 % 29.5 - 29.9 % Weighted-average volatility 32.9 % 29.5 - 29.9 % Expected dividends 4.48 % 2.36 - 2.95 % Risk-free rate 0.5 % 1.5 - 2.4 % Average risk-free rate 0.5 % 1.5 - 2.4 % Expected term (in years) 7.4 7.4 Pre-vesting executive departure rate 0.6 % 0.6 % Pre-vesting non-executive departure rate 2.5 % Incentive Stock Plans The Corning Incentive Stock Plan permits restricted stock and restricted stock unit grants, either determined by specific performance goals or issued directly, in most instances, subject to the possibility of forfeiture and without cash consideration. Restricted stock and restricted stock units under the Incentive Stock Plan are granted at the closing market price on the grant date, contingently vest over a period of generally one ten one ten Time-Based Restricted Stock and Restricted Stock Units Time-based restricted stock and restricted stock units are issued by the Company on a discretionary basis, and are payable in shares of the Company’s common stock upon vesting. The fair value is based on the closing market price of the Company’s stock on the grant date. Compensation cost is recognized over the requisite vesting period and adjusted for actual forfeitures before vesting. The following table represents a summary of the status of the Company’s non-vested time-based restricted stock and restricted stock units as of December 31, 2020 December 31, 2021 Number of shares (in thousands) Weighted-average grant-date fair value Non-vested shares and share units at December 31, 2020 12,943 $ 22.87 Granted 1,890 40.77 Vested (3,774 ) 23.40 Forfeited (465 ) 23.74 Non-vested shares and share units at December 31, 2021 10,594 $ 25.83 As of December 31, 2021 December 31, 2021, 2020 2019 December 31, 2021, 2020 2019 Performance-Based Restricted Stock Units Performance-based restricted stock units are earned upon the achievement of certain targets, and are payable in shares of the Company’s common stock upon vesting typically over a three may The following table summarizes information concerning the Company’s non-vested performance-based restricted stock units, including the related transactions under the performance-based restricted stock units plan for the year ended December 31, 2021 Number of shares (in thousands) Weighted-average grant-date fair value Non-vested share units at December 31, 2020 1,765 $ 28.06 Granted 1,222 38.82 Vested (119 ) 28.06 Performance adjustments 917 38.82 Forfeited (101 ) 33.25 Non-vested share units at December 31, 2021 3,684 $ 34.17 As of December 31, 2021 December 31, 2021 2020

Note 20 - Reportable Segments

Note 20 - Reportable Segments	12 Months Ended
	Dec. 31, 2021
Notes to Financial Statements
Segment Reporting Disclosure [Text Block]	20. Reportable segments are as follows: • Display Technologies – manufactures glass substrates for flat panel liquid crystal displays and other high-performance display panels. • Optical Communications – manufactures carrier network and enterprise network components for the telecommunications industry. • Specialty Materials – manufactures products that provide more than 150 material formulations for glass, glass ceramics and fluoride crystals to meet demand for unique customer needs. • Environmental Technologies – manufactures ceramic substrates and filters for automotive and diesel applications. • Life Sciences – manufactures glass and plastic labware, equipment, media, serum and reagents enabling workflow solutions for drug discovery and bioproduction. All other businesses that do not The Company obtained a controlling interest in HSG during the third 2020 September 9, 2020. 4 Financial results for the reportable segments are prepared on a basis consistent with the internal disaggregation of financial information to assist the CODM in making internal operating decisions. The impact of changes in the Japanese yen, South Korean won, Chinese yuan and new Taiwan dollar are excluded from segment sales and segment net income for the Display Technologies and Specialty Materials segments. The impact of changes in the euro and Chinese yuan are excluded from segment sales and segment net income for the Environment Technologies segment. The impact of changes in the euro, Chinese yuan and Japanese yen are excluded from segment sales and segment net income for the Life Sciences segment. Certain income and expenses are included in the unallocated amounts in the reconciliation of reportable segment net income (loss) to consolidated net income. These include items that are not Earnings of equity affiliates that are closely associated with the reportable segments are included in the respective segment’s net income (loss). Certain common expenses among reportable segments have been allocated differently than they would for stand-alone financial information. Segment net income (loss) may not The following provides historical segment information as described above: Segment Information Display Technologies Optical Communications Specialty Materials Environmental Technologies Life Sciences All Other Total For the year ended December 31, 2021 Segment net sales $ 3,700 $ 4,349 $ 2,008 $ 1,586 $ 1,234 $ 1,243 $ 14,120 Depreciation (1) $ 605 $ 224 $ 161 $ 139 $ 52 $ 134 $ 1,315 Research, development and engineering expenses (2) $ 110 $ 216 $ 208 $ 111 $ 33 $ 160 $ 838 Income tax (provision) benefit (3) $ (249 ) $ (152 ) $ (99 ) $ (72 ) $ (51 ) $ 11 $ (612 ) Net income (loss) (4) $ 960 $ 553 $ 371 $ 269 $ 194 $ (51 ) $ 2,296 Investment in affiliated companies, at equity $ 109 $ 3 $ 6 $ 4 $ 142 $ 264 Segment assets (5) $ 8,498 $ 3,183 $ 2,308 $ 2,150 $ 791 $ 2,024 $ 18,954 Capital expenditures $ 710 $ 301 $ 183 $ 228 $ 128 $ 149 $ 1,699 For the year ended December 31, 2020 Segment net sales $ 3,172 $ 3,563 $ 1,884 $ 1,370 $ 998 $ 465 $ 11,452 Depreciation (1) $ 548 $ 242 $ 162 $ 132 $ 50 $ 81 $ 1,215 Research, development and engineering expenses (2) $ 99 $ 204 $ 155 $ 100 $ 26 $ 170 $ 754 Income tax (provision) benefit (3) $ (190 ) $ (101 ) $ (113 ) $ (52 ) $ (37 ) $ 58 $ (435 ) Net income (loss) (4) $ 717 $ 366 $ 423 $ 197 $ 139 $ (214 ) $ 1,628 Investment in affiliated companies, at equity $ 107 $ 3 $ 4 $ 2 $ 142 $ 258 Segment assets (5) $ 8,777 $ 2,868 $ 2,551 $ 1,986 $ 683 $ 2,157 $ 19,022 Capital expenditures $ 311 $ 127 $ 125 $ 159 $ 83 $ 123 $ 928 For the year ended December 31, 2019 Segment net sales $ 3,254 $ 4,064 $ 1,594 $ 1,499 $ 1,015 $ 230 $ 11,656 Depreciation (1) $ 583 $ 237 $ 145 $ 128 $ 49 $ 50 $ 1,192 Research, development and engineering expenses (2) $ 119 $ 218 $ 154 $ 118 $ 21 $ 237 $ 867 Income tax (provision) benefit (3) $ (206 ) $ (134 ) $ (81 ) $ (70 ) $ (40 ) $ 80 $ (451 ) Net income (loss) (4) $ 786 $ 489 $ 302 $ 263 $ 150 $ (289 ) $ 1,701 Investment in affiliated companies, at equity $ 145 $ 3 $ 3 $ 3 $ 137 $ 291 Segment assets (5) $ 9,022 $ 3,004 $ 2,433 $ 1,912 $ 627 $ 1,028 $ 18,026 Capital expenditures $ 872 $ 329 $ 176 $ 287 $ 80 $ 155 $ 1,899 ( 1 Depreciation expense for Corning’s reportable segments 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 Many of Corning’s administrative and staff functions are performed on a centralized basis. Where practicable, Corning charges these expenses to segments based upon the extent to which each business uses a centralized function. Other staff functions, such as corporate finance, human resources and legal, are allocated to segments, primarily as a percentage of sales. Expenses that are not ( 5 Segment assets include inventory, accounts receivable, property, plant and equipment, net of accumulated depreciation, and associated equity companies. HSG assets are included as of December 31, 2021 2020. A reconciliation of reportable segments and “All Other” net sales to consolidated net sales is as follows (in millions): Year ended December 31, 2021 2020 2019 Net sales of reportable segments and All Other $ 14,120 $ 11,452 $ 11,656 Impact of foreign currency movements (1) (38 ) (44 ) (153 ) Cumulative adjustment related to customer contract (2) (105 ) Consolidated net sales $ 14,082 $ 11,303 $ 11,503 ( 1 This amount primarily represents the impact of foreign currency adjustments in the Display Technologies segment. ( 2 Amount represents the negative impact of a cumulative adjustment recorded during the first 2020 5 A reconciliation of reportable segment net income (loss) to consolidated net income follows (in millions): Year ended December 31, 2021 2020 2019 Net income of reportable segments $ 2,347 $ 1,842 $ 1,990 Net loss of All Other (1) (51 ) (214 ) (289 ) Unallocated amounts: Impact of foreign currency movements not included in segment net loss (87 ) (22 ) (115 ) Gain (loss) on foreign currency hedges related to translated earnings 354 (46 ) 245 Translation gain (loss) on Japanese yen-denominated debt 180 (86 ) (3 ) Litigation, regulatory and other legal matters (16 ) (144 ) 17 Research, development, and engineering expense (2)(3) (149 ) (153 ) (134 ) Transaction-related gain, net (4) 498 Equity in earnings (losses) of affiliated companies (5) 5 (24 ) 15 Amortization of intangibles (129 ) (121 ) (113 ) Interest expense, net (265 ) (261 ) (200 ) Income tax benefit 120 324 195 Pension mark-to-market (32 ) (31 ) (95 ) Cumulative adjustment related to customer contract (6) (105 ) Severance charges (3) 13 (148 ) (63 ) Asset impairment (3) (217 ) Capacity realignment and other charges and credits (3) (123 ) (462 ) (376 ) Bond redemption loss (7) (31 ) (22 ) (Loss) gain on investment (8) (23 ) 107 Gain on sale of business 54 Other corporate items (261 ) (203 ) (114 ) Net income $ 1,906 $ 512 $ 960 ( 1 The Company obtained a controlling interest in HSG during the third 2020 September 9, 2020. ( 2 Amount does not ( 3 Refer to Note 2 ( 4 Amount represents the pre-tax gain recorded on Corning’s previously held equity investment in HSG recorded in 2020. 4 ( 5 Primarily represents the equity earnings of HSG prior to September 9, 2020. 3 4 ( 6 Amount represents the negative impact of a cumulative adjustment to reduce revenue in the amount of $105 million recorded during the first 2020. 5 ( 7 Refer to Note 12 ( 8 Primarily represents the gain recognized from the initial public offering of an investment in the fourth 2020. A reconciliation of reportable segment assets to consolidated total assets follows (in millions): December 31, 2021 2020 2019 Total assets of reportable segments $ 16,930 $ 16,865 $ 16,998 Total assets of All Other 2,024 2,157 1,028 Unallocated amounts: Current assets (1) 3,163 3,434 3,301 Investments (2) 54 177 43 Property, plant and equipment, net (3) 1,620 1,548 1,764 Other non-current assets (4) 6,363 6,594 5,764 Total assets $ 30,154 $ 30,775 $ 28,898 ( 1 Includes current corporate assets, including cash, other receivables, prepaid expenses and current portion of long-term derivative assets. ( 2 Represents other corporate investments. Asset balance does not 2019. September 9, 2020. ( 3 Represents corporate property not ( 4 Includes non-current corporate assets, including goodwill, other intangible assets, pension assets, long-term derivative assets, operating leases and deferred income taxes. Selected financial information concerning the Company’s product lines and reportable segments follow (in millions): Year ended December 31, Revenue from external customers 2021 2020 2019 Display Technologies $ 3,700 $ 3,172 $ 3,254 Optical Communications Carrier network 3,200 2,612 2,885 Enterprise network 1,149 951 1,179 Total Optical Communications 4,349 3,563 4,064 Specialty Materials Corning® Gorilla® Glass 1,403 1,420 1,180 Advanced optics and other specialty glass 605 464 414 Total Specialty Materials 2,008 1,884 1,594 Environmental Technologies Automotive and other 936 883 907 Diesel 650 487 592 Total Environmental Technologies 1,586 1,370 1,499 Life Sciences Labware 671 552 550 Cell culture products 563 446 465 Total Life Science 1,234 998 1,015 All Other Polycrystalline Silicon 892 194 Other 351 271 230 Total All Other 1,243 465 230 Net sales of reportable segments and All Other 14,120 11,452 11,656 Impact of foreign currency movements (1) (38 ) (44 ) (153 ) Cumulative adjustment related to customer contract (2) (105 ) Consolidated net sales $ 14,082 $ 11,303 $ 11,503 ( 1 This amount primarily represents the impact of foreign currency adjustments in the Display Technologies segment. ( 2 Amount represents the negative impact of a cumulative adjustment recorded during the first 2020 5 Information concerning principal geographic areas for reportable segments and "All Other" was as follows (in millions): 2021 2020 2019 Net sales (1)(3) Long-lived assets (2)(3) Net sales (1)(3) Long-lived assets (2)(3) Net sales (1) Long-lived assets (2) North America: United States $ 4,539 $ 8,600 $ 3,412 $ 8,718 $ 3,760 $ 7,654 Canada 472 114 274 121 277 126 Mexico 93 289 75 239 55 267 Total North America 5,104 9,003 3,761 9,078 4,092 8,047 Asia Pacific: Japan 780 496 505 583 441 893 Taiwan 983 1,923 887 2,247 880 2,280 China 4,495 4,966 3,734 4,469 3,096 3,816 Korea 640 3,479 748 3,597 1,051 3,625 Other 459 84 340 83 401 86 Total Asia Pacific 7,357 10,948 6,214 10,979 5,869 10,700 Europe: Germany 462 500 378 579 435 546 Other 925 910 838 931 886 914 Total Europe 1,387 1,410 1,216 1,510 1,321 1,460 All Other 272 68 261 83 374 71 Total $ 14,120 $ 21,429 $ 11,452 $ 21,650 $ 11,656 $ 20,278 ( 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. ( 3 Includes HSG’s net sales and long-lived assets as of December 31, 2021 September 9, 2020. 3 4

Significant Accounting Policies

Significant Accounting Policies (Policies)	12 Months Ended
	Dec. 31, 2021
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 Corning’s consolidated financial statements were prepared in conformity with generally accepted accounting principles in the U.S. and include the assets, liabilities, revenue and expenses of all majority-owned subsidiaries over which Corning exercises control. The equity method of accounting is used for investments in affiliated companies that are not For our investments in companies that we do not not On September 9, 2020, 3 4 All intercompany accounts, transactions and profits are eliminated in consolidation. Certain prior year amounts have been reclassified to conform to the current year’s 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 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 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 are 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. In addition, Corning also has contractual arrangements with certain customers 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.
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 $0.8 billion, $1.0 billion and $0.8 billion in 2021 2020 2019
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, exchange rate gains and losses are included in income for the period in which the exchange rates changed. A net foreign currency translation gain of $126 million was recorded for the year ended December 31, 2021. December 31, 2020 2019,
Compensation Related Costs, Policy [Policy Text Block]	Share-Based Compensation Corning’s share-based compensation programs include employee stock option grants, time-based or performance-based restricted stock and restricted stock units, as more fully described in Note 19 The cost of share-based compensation awards is equal to the fair value of the award at the date of grant and compensation expense is recognized for those awards earned over the vesting period. Corning estimates the fair value of share-based awards using a multiple-point Black-Scholes option valuation model, which incorporates assumptions including expected volatility, dividend yield, risk-free rate, expected term and departure rates.
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 Supplemental disclosure of cash flow information is as follows (in millions): Year ended December 31, 2021 2020 2019 Non-cash transactions: Accruals for capital expenditures $ 357 $ 231 $ 592 Cash paid for interest and income taxes: Interest (1) $ 287 $ 298 $ 248 Income taxes, net of refunds received $ 377 $ 220 $ 474 ( 1 Included in this amount are approximately $36 million, $58 million and $54 million of interest costs that were capitalized as part of property, plant and equipment, net of accumulated depreciation, in 2021 2020 2019
Receivables, Trade and Other Accounts Receivable, Allowance for Doubtful Accounts, Policy [Policy Text Block]	Allowance for 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 allowances 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
Asset Retirement Obligation and Environmental Cost [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
Inventory, Policy [Policy Text Block]	Inventories, net Inventories are stated at the lower of cost or net realizable value, which is defined as estimated selling prices in the ordinary course of business, less reasonably predictable costs of completion, disposal and transportation. Cost is determined on a 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 estimated useful lives of properties using the straight-line method. Except as described in Note 9 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 As a practical expedient, lease and non-lease components of a contract are accounted for as a single lease component across all underlying asset classes. Corning does not Corning’s leases do not not not Refer to Note 7
Impairment or Disposal of Long-Lived Assets, Policy [Policy Text Block]	Impairment of Long-Lived Assets The recoverability of long-lived assets, such as 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 We are required to assess the recoverability of the carrying value of long-lived assets when an indicator of impairment has been identified. We review long-lived assets in each quarter in which impairment indicators are present. We must exercise judgment in assessing whether an event of impairment has occurred. Refer to Note 2
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 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. Refer to Note 13
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. The effective income tax rate reflects the assessment of the ultimate outcome of tax audits. In evaluating the tax benefits associated with our various tax filing positions, we record a tax benefit for uncertain tax positions 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. Valuation allowances are established when management is unable to conclude that it is more likely than not Generally, Corning will indefinitely reinvest the foreign earnings of: ( 1 2 3 4 5
Equity Method Investments [Policy Text Block]	Equity Method Investments 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 For an equity investment with impairment indicators, the fair value is measured based on discounted cash flows, or other appropriate valuation methods, depending on the nature of the company involved. If it is probable that the carrying amount of the investment cannot be recovered, the impairment is considered other-than-temporary and recorded in earnings, and the equity investment balance is reduced to its fair value. All equity securities that do not not not 3
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, asset retirement obligations, equity method investments and other investments that Corning cannot significantly influence. 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.
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. Interest rate swaps are utilized to reduce the risk of changes in a benchmark interest rate from the probable forecasted issuance of debt and manage the mix of fixed and floating rate debt. Financial exposure is managed in accordance with corporate policies and procedures. All derivatives are recorded at fair value on the consolidated balance sheets. Changes in the fair value of derivatives designated as cash flow hedges and hedges of net investments in foreign operations are not not
New Accounting Pronouncements, Policy [Policy Text Block]	New Accounting Standards During the first 2021, 2020 06. 470 20. 815 40. may 260. 2020 06 not one January 1, 2021. In November 2021, 2021 10 832 2021 10 December 15, 2021. not January 1, 2022. As of December 31, 2021 no

Note 1 - Significant Accounti_2

Note 1 - Significant Accounting Policies (Tables)	12 Months Ended
	Dec. 31, 2021
Notes Tables
Schedule of Cash Flow, Supplemental Disclosures [Table Text Block]	Year ended December 31, 2021 2020 2019 Non-cash transactions: Accruals for capital expenditures $ 357 $ 231 $ 592 Cash paid for interest and income taxes: Interest (1) $ 287 $ 298 $ 248 Income taxes, net of refunds received $ 377 $ 220 $ 474
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, 2021
Notes Tables
Restructuring and Related Costs [Table Text Block]	Year ended December 31, 2021 2020 2019 Severance $ (13 ) $ 148 $ 63 Asset impairment 217 Capacity realignment 46 304 312 Other charges and credits 77 158 64 Total restructuring, impairment and other charges and credits $ 110 $ 827 $ 439 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 realignment 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 Year ended December 31, 2020 Selling, Research, general development and and Gross administrative engineering margin (1) expenses expenses Other Total Severance $ 83 $ 34 $ 31 $ 148 Asset impairment 6 211 217 Capacity realignment 288 16 304 Other charges and credits 72 60 5 $ 21 158 Total restructuring, impairment and other charges and credits $ 443 $ 116 $ 247 $ 21 $ 827 Year ended December 31, 2019 Selling, Research, general development and and Gross administrative engineering margin (1) expenses expenses Other Total Severance $ 30 $ 20 $ 13 $ 63 Capacity realignment 298 14 312 Other charges and credits 60 8 3 $ (7 ) 64 Total restructuring, impairment and other charges and credits $ 388 $ 28 $ 30 $ (7 ) $ 439

Note 3 - Investments (Tables)

Note 3 - Investments (Tables)	12 Months Ended
	Dec. 31, 2021
Notes Tables
Equity Method Investments [Table Text Block]	Ownership December 31, interest 2021 2020 Affiliated companies accounted for by the equity method 50% or less $ 264 $ 258 Other investments 64 177 Total investment assets $ 328 $ 435
Schedule of Affiliate Result of Operations [Table Text Block]	2021 2020 2019 Statement of operations (1) Net sales $ 816 $ 1,201 $ 1,508 Gross profit $ 104 $ 136 $ 79 Net income (loss) $ 113 $ (48 ) $ (102 ) Net income (loss) attributable to the affiliated companies $ 114 $ (15 ) $ 70 Corning’s equity in earnings (losses) of affiliated companies $ 35 $ (25 ) $ 17 Related party transactions: Corning sales to affiliated companies $ 312 $ 253 $ 277 Corning purchases from affiliated companies $ 12 $ 8 $ 12 Corning transfers of assets, at cost, to affiliated companies $ 1 $ 9 $ 8 Dividends received from affiliated companies $ 6 $ 1 $ 106 Intercompany sales within HSG (included in net sales) $ 55 $ 112 2021 2020 Balance sheet: Current assets $ 648 $ 534 Noncurrent assets $ 549 $ 466 Short-term borrowings, including current portion of long-term debt $ 6 $ 2 Other current liabilities $ 159 $ 164 Long-term debt $ 58 $ 60 Other long-term liabilities $ 66 $ 11 Related party transactions: Balances due from affiliated companies $ 38 $ 36 Balances due to affiliated companies $ 1 $ 1 2020 2019 Statement of operations: Net sales $ 423 $ 779 Gross profit $ 87 $ 9 Net income (loss) (1) $ 11 $ (117 ) Net income attributable to HSG $ 44 $ 54 Corning’s equity in earnings of affiliated companies $ 22 $ 27 Related party transactions: Dividends received from affiliated companies $ 100 Intercompany sales within HSG (included in net sales) $ 55 $ 112 2020 Balance sheet: Current assets $ 853 Noncurrent assets $ 725 Short-term borrowings, including current portion of long-term debt $ 178 Other current liabilities $ 337 Long-term debt $ 6 Other long-term liabilities $ 1,499 Non-controlling interest $ 9 Related party transactions: Intercompany receivables and payables within HSG (included in current assets and other current liabilities) $ 8

Note 4 - HSG Transactions and_2

Note 4 - HSG Transactions and Acquisitions (Tables)	12 Months Ended
	Dec. 31, 2021
Notes Tables
Schedule of Business Acquisitions, by Acquisition [Table Text Block]	Fair value of previously held equity investment $ 250 Equity investment liability balance as of acquisition date (248 ) Corning's gain on previously held equity investment $ 498
HSG [Member]
Notes Tables
Schedule of Recognized Identified Assets Acquired and Liabilities Assumed [Table Text Block]	Inventory $ 503 Property, plant and equipment 651 Intangible assets 285 Other current and non-current assets (1) 173 Short-term borrowings (178 ) Trade payables and other accrued liabilities (329 ) Other liabilities (1,261 ) Total identified net liabilities (156 ) Non-controlling interests (2) (102 ) Total fair value of Corning's previously held equity investment (2) (250 ) Goodwill (3) $ 508

Note 5 - Revenue (Tables)

Note 5 - Revenue (Tables)	12 Months Ended
	Dec. 31, 2021
Notes Tables
Disaggregation of Revenue [Table Text Block]	Year ended December 31, 2021 2020 2019 Display products $ 3,666 $ 3,077 $ 3,180 Telecommunication products 4,349 3,563 4,064 Specialty glass products 2,008 1,884 1,594 Environmental substrate and filter products 1,584 1,333 1,440 Life science products 1,232 981 995 All Other (1) 1,243 465 230 Total Revenue $ 14,082 $ 11,303 $ 11,503 Impact of foreign currency movements (2) 38 44 153 Cumulative adjustment related to customer contract (3) 105 Net sales of reportable segments and All Other $ 14,120 $ 11,452 $ 11,656

Note 6 - Inventories, Net (Tabl

Note 6 - Inventories, Net (Tables)	12 Months Ended
	Dec. 31, 2021
Notes Tables
Schedule of Inventory, Current [Table Text Block]	December 31, 2021 2020 Finished goods $ 1,190 $ 1,236 Work in process 358 357 Raw materials and accessories 427 370 Supplies and packing materials 506 475 Total inventories, net $ 2,481 $ 2,438

Note 7 - Leases (Tables)

Note 7 - Leases (Tables)	12 Months Ended
	Dec. 31, 2021
Notes Tables
Lease, Cost [Table Text Block]	Year ended December 31, 2021 2020 Finance: Depreciation of right-of-use assets $ 17 $ 15 Interest on lease liabilities 8 7 Total finance lease expense $ 25 $ 22 Operating lease expense $ 139 $ 133 Variable lease expense 59 41 Short-term lease expense 2 4 Total lease expense $ 225 $ 200 December 31, 2021 2020 Finance: Principal $ 13 $ 10 Interest 8 7 Total finance lease payments $ 21 $ 17 Operating lease payments $ 134 $ 121 Total lease payments $ 155 $ 138
Assets and Liabilities, Lessee [Table Text Block]	December 31, 2021 2020 Operating Leases: Operating lease right-of-use assets, net (1) $ 741 $ 680 Other current liabilities $ 94 $ 96 Operating lease liabilities (2) 691 633 Total operating lease liabilities $ 785 $ 729 Finance Leases: Property and equipment, at cost $ 200 $ 184 Accumulated depreciation (40 ) (27 ) Property and equipment, net $ 160 $ 157 Current portion of long-term debt $ 15 $ 10 Long-term debt 168 163 Total finance lease liabilities $ 183 $ 173
Operating and Finance Lease, Liability, Maturity [Table Text Block]	2022 2023 2024 2025 2026 After 2026 Gross Total Imputed Discount Total Operating leases $ 103 $ 110 $ 97 $ 85 $ 78 $ 553 $ 1,026 $ (241 ) $ 785 Finance leases 22 27 21 15 32 142 259 (76 ) 183

Note 8 - Income Taxes (Tables)

Note 8 - Income Taxes (Tables)	12 Months Ended
	Dec. 31, 2021
Notes Tables
Schedule of Income before Income Tax, Domestic and Foreign [Table Text Block]	Year ended December 31, 2021 2020 2019 U.S. companies $ 1,254 $ (71 ) $ 504 Non-U.S. companies 1,143 694 712 Income before income taxes $ 2,397 $ 623 $ 1,216
Schedule of Components of Income Tax Expense (Benefit) [Table Text Block]	Year ended December 31, 2021 2020 2019 Current: Federal $ (172 ) $ 88 $ (82 ) State and municipal (13 ) (16 ) (12 ) Foreign (290 ) (203 ) (354 ) Deferred: Federal (97 ) 7 64 State and municipal (7 ) 3 13 Foreign 88 10 115 Provision for income taxes $ (491 ) $ (111 ) $ (256 )
Schedule of Effective Income Tax Rate Reconciliation [Table Text Block]	Year ended December 31, 2021 2020 2019 Statutory U.S. income tax rate 21.0 % 21.0 % 21.0 % State income tax, net of federal effect 1.0 1.4 0.6 Global intangible low-taxed income 0.2 (0.5 ) 1.2 Foreign derived intangible income (1.3 ) (8.5 ) Remeasurement of deferred tax assets and liabilities (13.4 ) (0.6 ) Differential arising from foreign earnings (1) 2.0 15.2 5.4 IRS settlements & change in reserve 1.6 12.1 8.5 Valuation allowance (0.5 ) 2.5 (3.7 ) Tax credits (2.6 ) (29.7 ) (2.8 ) Stock compensation (1.5 ) (1.7 ) (0.6 ) Legal entity rationalization (2.2 ) Intercompany loan adjustment 6.2 (0.5 ) Non-deductible expenses 1.4 7.0 2.1 Other items, net (0.8 ) (0.1 ) (1.0 ) Effective income tax rate 20.5 % 17.8 % 21.1 %
Schedule of Deferred Tax Assets and Liabilities [Table Text Block]	December 31, 2021 2020 Loss and tax credit carryforwards $ 375 $ 637 Other assets 281 269 Asset impairments and restructuring reserves 30 29 Postretirement medical and life benefits 154 171 Other accrued liabilities 354 162 Other employee benefits 329 337 Gross deferred tax assets 1,523 1,605 Valuation allowances (138 ) (167 ) Total deferred tax assets 1,385 1,438 Intangible and other assets (103 ) (95 ) Fixed assets (300 ) (375 ) Finance leases (174 ) (160 ) Total deferred tax liabilities (577 ) (630 ) Net deferred tax assets $ 808 $ 808
Schedule of Net Deferred Tax Assets [Table Text Block]	December 31, 2021 2020 Deferred tax assets $ 1,066 $ 1,121 Other liabilities (258 ) (313 ) Net deferred tax assets $ 808 $ 808
Summary of Tax Credit Carryforwards [Table Text Block]	Expiration Amount 2022-2026 2027-2031 2032-2041 Indefinite Net operating losses $ 303 $ 102 $ 16 $ 41 $ 144 Tax credits 72 7 1 59 5 Balance as of December 31, 2021 $ 375 $ 109 $ 17 $ 100 $ 149
Summary of Valuation Allowance [Table Text Block]	Deferred Tax Valuation Allowance Balance at Additions Net deductions Balance at Year ended December 31, 2021 $ 167 $ 13 $ 42 $ 138 Year ended December 31, 2020 $ 215 $ 27 $ 75 $ 167 Year ended December 31, 2019 $ 317 $ 10 $ 112 $ 215
Summary of Income Tax Contingencies [Table Text Block]	2021 2020 2019 Balance at January 1 $ 131 $ 62 $ 435 Additions based on tax positions related to the current year 54 19 3 Additions for tax positions of prior years 17 53 2 Reductions for tax positions of prior years (21 ) Settlements and lapse of statute of limitations (3 ) (3 ) (378 ) Balance at December 31 $ 178 $ 131 $ 62

Note 9 - Property, Plant and _2

Note 9 - Property, Plant and Equipment, Net of Accumulated Depreciation (Tables)	12 Months Ended
	Dec. 31, 2021
Notes Tables
Property, Plant and Equipment [Table Text Block]	December 31, 2021 2020 Land $ 441 $ 471 Buildings 6,145 6,453 Equipment 21,208 20,563 Construction in progress 1,979 1,918 Subtotal 29,773 29,405 Accumulated depreciation (13,969 ) (13,663 ) Total $ 15,804 $ 15,742

Note 10 - Goodwill and Other _2

Note 10 - Goodwill and Other Intangible Assets (Tables)	12 Months Ended
	Dec. 31, 2021
Notes Tables
Schedule of Goodwill [Table Text Block]	Display Technologies Optical Communications Specialty Materials Life Sciences All Other Total Balance at December 31, 2019 $ 129 $ 931 $ 150 $ 616 $ 109 $ 1,935 Acquired goodwill (1) 495 495 Foreign currency translation adjustment and other 3 12 2 13 30 Balance at December 31, 2020 $ 132 $ 943 $ 150 $ 618 $ 617 $ 2,460 Foreign currency translation adjustment and other (7 ) (28 ) (2 ) (2 ) (39 ) Balance at December 31, 2021 $ 125 $ 915 $ 150 $ 616 $ 615 $ 2,421
Schedule of Finite-Lived Intangible Assets [Table Text Block]	December 31, 2021 2020 Gross Accumulated amortization Net Gross Accumulated amortization Net Amortized intangible assets: Patents, trademarks & trade names $ 498 $ 279 $ 219 $ 500 $ 255 $ 245 Customer lists and other (1) 1,464 535 929 1,517 454 1,063 Total $ 1,962 $ 814 $ 1,148 $ 2,017 $ 709 $ 1,308

Note 11 - Other Assets and Ot_2

Note 11 - Other Assets and Other Liabilities (Tables)	12 Months Ended
	Dec. 31, 2021
Notes Tables
Schedule of Other Assets [Table Text Block]	December 31, 2021 2020 Current assets: Derivative instruments (Note 15) $ 336 $ 148 Other current assets 690 613 Other current assets $ 1,026 $ 761 Non-current assets: Derivative instruments (Note 15) $ 164 $ 123 South Korean tax deposits 350 365 Operating leases (Note 7) 741 680 Investments (Note 3) 318 435 Other non-current assets 483 537 Other assets $ 2,056 $ 2,140
Other Liabilities [Table Text Block]	December 31, 2021 2020 Current liabilities: Wages and employee benefits $ 824 $ 572 Income taxes 196 173 Derivative instruments (Note 15) 144 189 Deferred revenue (Note 5) 148 152 Settlement liability (Note 4) 58 58 Customer deposits (Note 5) 223 211 Share repurchase liability (Note 17) 506 Short-term leases (Note 7) 94 96 Other current liabilities 946 986 Other accrued liabilities $ 3,139 $ 2,437 Non-current liabilities: Defined benefit pension plan liabilities $ 707 $ 887 Derivative instruments (Note 15) 49 155 Deferred revenue (Note 5) 764 872 Settlement liability (Note 4) 58 117 Customer deposits (Note 5) 1,072 1,148 Share repurchase liability (Note 17) 517 Deferred tax liabilities 258 313 Long-term leases (Note 7) 691 633 Asbestos and other litigation 35 94 Other non-current liabilities 1,041 798 Other liabilities $ 5,192 $ 5,017

Note 12 - Debt (Tables)

Note 12 - Debt (Tables)	12 Months Ended
	Dec. 31, 2021
Notes Tables
Schedule of Debt [Table Text Block]	December 31, 2021 2020 Current portion of long-term debt $ 55 $ 81 Short-term borrowings 75 Current portion of long-term debt and short-term borrowings $ 55 $ 156 Long-term debt Debentures, 8.875% $ 63 Debentures, 2.90% 374 Debentures, 3.70% 249 Medium-term notes, average rate 7.66% $ 45 45 Debentures, 3.90% 395 394 Debentures, 5.45% 1,086 1,084 Yen-denominated debentures, 0.698% 182 203 Yen-denominated debentures, 0.722% 87 96 Yen-denominated debentures, 0.992% 407 453 Yen-denominated debentures, 1.043% 264 293 Yen-denominated debentures, 1.153% 270 301 Yen-denominated debentures, 1.513% 51 56 Debentures, 6.85% 160 161 Yen-denominated debentures, 1.219% 216 239 Debentures, callable, 7.25% 249 249 Debentures, 4.70% 296 296 Yen-denominated debentures, 1.583% 86 96 Debentures, 5.75% 396 396 Debentures, 4.75% 496 496 Debentures, 5.35% 544 543 Debentures, 4.375% 743 743 Debentures, 5.85% 297 296 Financing Leases, average discount rate 4.4% 183 173 Other, average rate 4.33% 591 598 Total long-term debt, including current portion 7,044 7,897 Less current portion of long-term debt 55 81 Long-term debt $ 6,989 $ 7,816
Schedule of Maturities of Long-term Debt [Table Text Block]	2022 2023 2024 2025 2026 Thereafter $ 55 141 $ 293 $ 166 $ 36 $ 6,353

Note 13 - Employee Retirement_2

Note 13 - Employee Retirement Plans (Tables)	12 Months Ended
	Dec. 31, 2021
Notes Tables
Defined Benefit Plan, Plan with Projected Benefit Obligation in Excess of Plan Assets [Table Text Block]	December 31, 2021 2020 Projected benefit obligation $ 4,358 $ 4,665 Fair value of plan assets $ 3,627 $ 3,758 Accumulated benefit obligation $ 4,110 $ 4,247 Fair value of plan assets $ 3,627 $ 3,603
Schedule of Net Benefit Costs [Table Text Block]	Domestic pension benefits International pension benefits Postretirement benefits December 31, 2021 2020 2019 2021 2020 2019 2021 2020 2019 Service cost $ 102 $ 92 $ 76 $ 25 $ 26 $ 25 $ 10 $ 9 $ 9 Interest cost 78 110 133 10 12 15 15 20 27 Expected return on plan assets (209 ) (186 ) (161 ) (7 ) (9 ) (10 ) Amortization of prior service cost (credit) 4 6 7 (1 ) (1 ) (1 ) (6 ) (5 ) (7 ) Amortization of actuarial loss (gain) 2 1 (1 ) Recognition of actuarial loss 10 12 66 1 10 24 Total net periodic benefit (income) expense $ (15 ) $ 34 $ 121 $ 28 $ 38 $ 53 $ 21 $ 25 $ 28 Special termination benefit charge 8 6 1 1 Total (income) expense $ (15 ) $ 42 $ 127 $ 28 $ 38 $ 53 $ 21 $ 26 $ 29 Other changes in plan assets and benefit obligations recognized in other comprehensive (loss) income: Curtailment effects $ (4 ) Current year actuarial (gain) loss $ (105 ) $ 94 $ 47 $ (7 ) (11 ) $ 41 $ (105 ) $ 58 $ 6 Amortization of actuarial (loss) gain (2 ) (1 ) 1 Recognition of actuarial loss (10 ) (12 ) (66 ) (1 ) (10 ) (24 ) Current year prior service cost 1 5 Amortization of prior service (cost) credit (4 ) (6 ) (7 ) 1 1 1 6 $ 5 7 Total recognized in other comprehensive (loss) income $ (119 ) $ 77 $ (26 ) $ (7 ) $ (24 ) $ 18 $ (101 ) $ 62 $ 19
Defined Benefit Plan, Assumptions [Table Text Block]	Pension benefits Domestic International Postretirement benefits 2021 2020 2019 2021 2020 2019 2021 2020 2019 Discount rate 2.87 % 2.50 % 3.28 % 1.20 % 1.02 % 1.34 % 2.99 % 2.69 % 3.41 % Rate of compensation increase 3.50 % 4.16 % 3.50 % 3.63 % 3.55 % 2.96 % Cash balance crediting rate 3.86 % 3.84 % 3.94 % 0.91 % 0.94 % 0.97 % Employee contributions crediting rate 1.57 % 0.62 % 2.03 % Pension benefits Domestic International Postretirement benefits 2021 2020 2019 2021 2020 2019 2021 2020 2019 Discount rate 2.50 % 3.28 % 4.28 % 1.02 % 1.34 % 1.96 % 2.69 % 3.41 % 4.33 % Expected return on plan assets 6.00 % 6.00 % 6.00 % 1.26 % 1.71 % 2.01 % Rate of compensation increase 4.16 % 3.50 % 3.50 % 3.55 % 2.96 % 2.96 % Cash balance crediting rate 3.84 % 3.94 % 3.94 % 0.94 % 0.97 % 0.97 % Employee contributions crediting rate 0.62 % 2.03 % 3.47 %
Schedule of Health Care Cost Trend Rates [Table Text Block]	Assumed health care trend rates at December 31 2021 2020 Health care cost trend rate assumed for next year 6.25 % 6.50 % Rate that the cost trend rate gradually declines to 5 % 5 % Year that the rate reaches the ultimate trend rate 2027 2027
Fair Value, Assets Measured on Recurring Basis [Table Text Block]	December 31, 2021 December 31, 2020 (in millions) Total (Level 1) (Level 2) (Level 3) Total (Level 1) (Level 2) (Level 3) Equity securities: U.S. companies $ 977 $ 20 $ 957 $ 781 $ 1 $ 780 International companies 234 234 441 441 Fixed income: U.S. treasury bonds 256 256 147 147 U.S. corporate bonds 1,770 1,770 1,951 1,951 Preferred securities 11 11 11 11 Private equity (1) 41 $ 41 51 $ 51 Real estate (2) 10 10 140 140 Cash equivalents 308 308 83 83 Total $ 3,607 $ 584 $ 2,972 $ 51 $ 3,605 $ 231 $ 3,183 $ 191
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Table Text Block]	Level 3 assets – domestic Level 3 assets – international (in millions) Private equity Real estate Mortgages Insurance contracts Balance at December 31, 2019 $ 64 $ 145 $ 21 $ 2 Actual return on plan assets relating to assets still held at the reporting date 4 Asset (sales) purchases (17 ) (5 ) (1 ) 1 Balance at December 31, 2020 $ 51 $ 140 $ 20 $ 3 Actual return on plan assets relating to assets still held at the reporting date 21 1 2 Actual return on plan assets relating to assets sold during the reporting period 4 Asset sales (31 ) (135 ) (1 ) Balance at December 31, 2021 $ 41 $ 10 $ 22 $ 2
Schedule of Expected Benefit Payments [Table Text Block]	Expected benefit payments Domestic pension benefits International pension benefits Postretirement benefits 2022 $ 232 $ 28 $ 33 2023 $ 233 $ 34 $ 33 2024 $ 242 $ 33 $ 33 2025 $ 251 $ 36 $ 33 2026 $ 254 $ 40 $ 33 2027-2031 $ 1,333 $ 221 $ 166
Pension Plan [Member]
Notes Tables
Schedule of Defined Benefit Plans Disclosures [Table Text Block]	Domestic pension benefits International pension benefits Postretirement benefits December 31, 2021 2020 2021 2020 2021 2020 Change in benefit obligation Benefit obligation at beginning of year $ 4,203 $ 3,856 $ 778 $ 725 $ 764 $ 705 Service cost 102 92 25 26 10 9 Interest cost 78 110 10 12 15 20 Plan participants’ contributions 1 7 8 Plan amendments 1 Actuarial (gain) loss (107 ) 329 (17 ) 29 (105 ) 58 Other 8 (2 ) (37 ) 2 Benefits paid (201 ) (194 ) (26 ) (19 ) (37 ) (38 ) Foreign currency translation (32 ) 42 Benefit obligation at end of year $ 4,075 $ 4,203 $ 736 $ 778 $ 654 $ 764 Change in plan assets Fair value of plan assets at beginning of year $ 3,575 $ 3,153 $ 598 $ 518 $ 30 Actual gain (loss) on plan assets 208 420 (2 ) 49 Employer contributions 16 195 31 50 9 $ 60 Plan participants’ contributions 1 7 8 Benefits paid (201 ) (194 ) (26 ) (44 ) (37 ) (38 ) Foreign currency translation (17 ) 25 Fair value of plan assets at end of year $ 3,598 $ 3,575 $ 584 $ 598 $ 9 $ 30 Funded status at end of year Fair value of plan assets $ 3,598 $ 3,575 $ 584 $ 598 $ 9 $ 30 Benefit obligations (4,075 ) (4,203 ) (736 ) (778 ) (654 ) (764 ) Funded status of plans $ (477 ) $ (628 ) $ (152 ) $ (180 ) $ (645 ) $ (734 ) Amounts recognized in the consolidated balance sheets consist of: Noncurrent asset $ 100 $ 99 Current liability $ (15 ) $ (13 ) (7 ) (7 ) $ (23 ) $ (7 ) Noncurrent liability (462 ) (615 ) (245 ) (272 ) (622 ) (727 ) Recognized liability $ (477 ) $ (628 ) $ (152 ) $ (180 ) $ (645 ) $ (734 ) Amounts recognized in accumulated other comprehensive loss consist of: Net actuarial loss (gain) $ 272 $ 387 $ (3 ) $ 7 $ (22 ) $ 86 Prior service cost (credit) 22 26 1 1 (20 ) (26 ) Amounts recognized at end of year $ 294 $ 413 $ (2 ) $ 8 $ (42 ) $ 60
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, 2021 December 31, 2020 (in millions) Total (Level 1) (Level 2) (Level 3) Total (Level 1) (Level 2) (Level 3) Fixed income: International fixed income $ 500 $ 416 $ 84 $ 519 $ 426 $ 93 Insurance contracts 2 $ 2 3 $ 3 Mortgages 22 22 20 20 Cash equivalents 60 60 56 56 Total $ 584 $ 476 $ 84 $ 24 $ 598 $ 482 $ 93 $ 23

Note 14 - Commitments, Contin_2

Note 14 - Commitments, Contingencies and Guarantees (Tables)	12 Months Ended
	Dec. 31, 2021
Notes Tables
Recorded Unconditional Purchase Obligations [Table Text Block]	Amount of commitment and contingency expiration per period Total Less than 1 year 1 to 3 years 3 to 5 years 5 years and thereafter Performance bonds and guarantees $ 215 $ 41 $ 77 $ 3 $ 94 Stand-by letters of credit (1) 69 43 17 9 Subtotal of commitment expirations per period $ 284 $ 84 $ 94 $ 3 $ 103 Purchase obligations (2) $ 994 $ 232 $ 219 $ 111 $ 432 Capital expenditure obligations (3) 357 357 Debentures (4) 6,315 227 87 6,001 Finance leases and financing obligations 729 55 207 115 352 Interest on debentures (5) 8,306 265 523 519 6,999 Imputed interest on finance leases and financing obligations 271 32 53 39 147 Operating lease obligations 1,026 103 207 163 553 Uncertain tax positions (6) 80 9 12 51 8 Subtotal of contractual obligation payments due by period $ 18,078 $ 1,053 $ 1,448 $ 1,085 $ 14,492 Total commitments and contingencies $ 18,362 $ 1,137 $ 1,542 $ 1,088 $ 14,595

Note 15 - Hedging Activities (T

Note 15 - Hedging Activities (Tables)	12 Months Ended
	Dec. 31, 2021
Notes Tables
Derivatives Not Designated as Hedging Instruments [Table Text Block]	Year ended December 31, 2021 2020 Average rate forward contracts: Japanese yen-denominated $ 2.9 $ 4.5 South Korean won-denominated 1.2 0.4 Euro-denominated 0.2 0.5 Other foreign currencies (1) 0.1 0.1 Option contracts: Japanese yen-denominated (2) 3.6 2.0 Other foreign currencies (3) 0.9 Total gross notional value outstanding $ 8.9 $ 7.5
Schedule of Notional Amounts of Outstanding Derivative Positions [Table Text Block]	Asset derivatives Liability derivatives Notional amount Fair value Fair value 2021 2020 Balance sheet location 2021 2020 Balance sheet location 2021 2020 Derivatives designated as hedging instruments (1) Foreign exchange contracts and other $ 780 $ 1,143 Other current assets $ 49 $ 37 Other accrued liabilities $ (2 ) $ (3 ) Other assets 10 21 Other liabilities (9 ) (1 ) Derivatives not designated as hedging instruments Foreign exchange contracts 3,864 6,144 Other current assets 91 45 Other accrued liabilities (95 ) (76 ) Other assets 41 Other liabilities (59 ) Translated earnings contracts 8,899 7,453 Other current assets 196 66 Other accrued liabilities (47 ) (110 ) Other assets 154 61 Other liabilities (40 ) (95 ) Total derivatives $ 13,543 $ 14,740 $ 500 $ 271 $ (193 ) $ (344 )
Not Designated as Hedging Instrument [Member]
Notes Tables
Schedule of Derivative Instruments, Effect on Other Comprehensive Income (Loss) [Table Text Block]	Gain (loss) recognized in income Undesignated derivatives Location of gain (loss) recognized in income 2021 2020 2019 Foreign exchange contracts Other income (expense), net (1) $ 38 $ (93 ) $ 21 Translated earnings contracts Translated earnings contract gain (loss), net 354 (38 ) 248 Total undesignated $ 392 $ (131 ) $ 269
Designated as Hedging Instrument [Member]
Notes Tables
Schedule of Derivative Instruments, Effect on Other Comprehensive Income (Loss) [Table Text Block]	Derivatives in hedging relationships Gain (loss) recognized in other comprehensive income (OCI) Location of gain (loss) reclassified from accumulated OCI into income Gain (loss) reclassified from accumulated OCI into income for cash flow and fair value hedges 2021 2020 2019 effective (ineffective) 2021 2020 2019 Net sales $ 14 $ (6 ) Cost of sales 39 13 $ 11 Foreign exchange contracts and other $ 47 $ (19 ) 72 Other expense, net (1) (14 ) Total cash flow and fair value hedges $ 47 $ (19 ) $ 72 $ 53 $ (7 ) $ 11

Note 16 - Fair Value Measurem_2

Note 16 - Fair Value Measurements (Tables)	12 Months Ended
	Dec. 31, 2021
Notes Tables
Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block]	Fair value measurements at reporting date Fair value measurements at reporting date December 31, December 31, (in millions) 2021 (Level 1) (Level 2) (Level 3) 2020 (Level 1) (Level 2) (Level 3) Current assets: Other current assets (1)(2) $ 352 $ 10 $ 336 $ 6 $ 152 $ 148 $ 4 Non-current assets: Investments (3) $ 137 $ 137 Other assets (1) $ 175 $ 164 $ 11 $ 139 $ 123 $ 16 Current liabilities: Other accrued liabilities (1) $ 144 $ 144 $ 189 $ 189 Non-current liabilities: Other liabilities (1)(4) $ 66 $ 66 $ 155 $ 155

Note 17 - Shareholders' Equity

Note 17 - Shareholders' Equity (Tables)	12 Months Ended
	Dec. 31, 2021
Notes Tables
Schedule of Stockholders Equity [Table Text Block]	Common stock Treasury stock Shares Par value Shares Cost Balance at December 31, 2018 1,713 $ 857 (925 ) $ (18,870 ) Shares issued to benefit plans and for option exercises 5 2 Shares purchased for treasury (31 ) (925 ) Other, net (1) (17 ) Balance at December 31, 2019 1,718 $ 859 (956 ) $ (19,812 ) Shares issued to benefit plans and for option exercises 8 4 Shares purchased for treasury (4 ) (105 ) Other, net (1) (1 ) (11 ) Balance at 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 at December 31, 2021 1,815 $ 907 (970 ) $ (20,263 )
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 gains (losses) on investments Net unrealized gains (losses) on designated hedges Accumulated other comprehensive loss Balance at December 31, 2018 $ (714 ) $ (298 ) $ (4 ) $ 6 $ (1,010 ) Other comprehensive (loss) income before reclassifications (2) $ (129 ) $ (79 ) $ 1 $ 54 $ (153 ) Amounts reclassified from accumulated other comprehensive income (loss) (5) 15 (9 ) 6 Equity method affiliates (6) (14 ) (14 ) Net current-period other comprehensive (loss) income (143 ) (64 ) 1 45 (161 ) Balance at December 31, 2019 $ (857 ) $ (362 ) $ (3 ) $ 51 $ (1,171 ) Other comprehensive income (loss) before reclassifications (3) $ 511 $ (106 ) $ (14 ) $ 391 Amounts reclassified from accumulated other comprehensive income (loss) (5) 18 5 23 Equity method affiliates (6) 17 17 Net current-period other comprehensive income (loss) 528 (88 ) (9 ) 431 Balance at December 31, 2020 $ (329 ) $ (450 ) $ (3 ) $ 42 $ (740 ) Other comprehensive (loss) income before reclassifications (4) $ (582 ) $ 178 $ 43 $ (361 ) Amounts reclassified from accumulated other comprehensive (loss) income (5) (52 ) (52 ) Equity method affiliates (6) (22 ) (22 ) Net current-period other comprehensive (loss) income (604 ) 178 (9 ) (435 ) Balance at December 31, 2021 $ (933 ) $ (272 ) $ (3 ) $ 33 $ (1,175 )
Reclassification out of Accumulated Other Comprehensive Income [Table Text Block]	Reclassifications Out of Accumulated Other Comprehensive Income ("AOCI") by Component (1) Amount reclassified from AOCI Affected line item Year ended December 31, in the consolidated Details about AOCI Components 2021 2020 2019 statements of income Amortization of net actuarial loss $ (3 ) $ (23 ) $ (89 ) (2) Amortization of prior service credit (cost) 3 1 (2) (23 ) (88 ) Total before tax 5 73 Tax benefit (3) $ — $ (18 ) $ (15 ) Net of tax Realized gains (losses) on designated hedges $ 14 $ (6 ) Sales 39 13 $ 11 Cost of sales (14 ) Other expense, net 53 (7 ) 11 Total before tax (1 ) 2 (2 ) Tax benefit (expense) $ 52 $ (5 ) $ 9 Net of tax Total reclassifications for the period $ 52 $ (23 ) $ (6 ) Net of tax

Note 18 - Earnings Per Common_2

Note 18 - Earnings Per Common Share (Tables)	12 Months Ended
	Dec. 31, 2021
Notes Tables
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]	Year ended December 31, 2021 2020 2019 Net income attributable to Corning Incorporated $ 1,906 $ 512 $ 960 Less: Series A convertible preferred stock dividend 24 98 98 Less: Excess consideration paid for redemption of preferred stock 803 Net income available to common shareholders - basic 1,079 414 862 Plus: Series A convertible preferred stock dividend 98 Net income available to common shareholders - diluted $ 1,079 $ 414 $ 960 Weighted-average common shares outstanding - basic 828 761 776 Effect of dilutive securities: Stock options and other dilutive securities 16 11 8 Series A convertible preferred stock (1) 115 Weighted-average common shares outstanding - diluted 844 772 899 Basic earnings per common share $ 1.30 $ 0.54 $ 1.11 Diluted earnings per common share $ 1.28 $ 0.54 $ 1.07 Anti-dilutive potential shares excluded from diluted earnings per common share: Series A convertible preferred stock dividend (1) 31 115 Employee stock options and awards 2 2 Total 31 117 2

Note 19 - Share-based Compens_2

Note 19 - Share-based Compensation (Tables)	12 Months Ended
	Dec. 31, 2021
Notes Tables
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, 2020 17,095 $ 21.60 Exercised (4,818 ) 19.85 Forfeited and expired (373 ) 21.40 Options outstanding as of December 31, 2021 11,904 22.31 6.59 $ 177,634 Options expected to vest as of December 31, 2021 11,830 22.32 6.57 176,328 Options exercisable as of December 31, 2021 6,573 21.19 5.42 105,412
Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block]	2020 2019 Expected volatility 32.9 % 29.5 - 29.9 % Weighted-average volatility 32.9 % 29.5 - 29.9 % Expected dividends 4.48 % 2.36 - 2.95 % Risk-free rate 0.5 % 1.5 - 2.4 % Average risk-free rate 0.5 % 1.5 - 2.4 % Expected term (in years) 7.4 7.4 Pre-vesting executive departure rate 0.6 % 0.6 % Pre-vesting non-executive departure rate 2.5 %
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 at December 31, 2020 12,943 $ 22.87 Granted 1,890 40.77 Vested (3,774 ) 23.40 Forfeited (465 ) 23.74 Non-vested shares and share units at December 31, 2021 10,594 $ 25.83
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 at December 31, 2020 1,765 $ 28.06 Granted 1,222 38.82 Vested (119 ) 28.06 Performance adjustments 917 38.82 Forfeited (101 ) 33.25 Non-vested share units at December 31, 2021 3,684 $ 34.17

Note 20 - Reportable Segments (

Note 20 - Reportable Segments (Tables)	12 Months Ended
	Dec. 31, 2021
Notes Tables
Schedule of Segment Reporting Information, by Segment [Table Text Block]	Display Technologies Optical Communications Specialty Materials Environmental Technologies Life Sciences All Other Total For the year ended December 31, 2021 Segment net sales $ 3,700 $ 4,349 $ 2,008 $ 1,586 $ 1,234 $ 1,243 $ 14,120 Depreciation (1) $ 605 $ 224 $ 161 $ 139 $ 52 $ 134 $ 1,315 Research, development and engineering expenses (2) $ 110 $ 216 $ 208 $ 111 $ 33 $ 160 $ 838 Income tax (provision) benefit (3) $ (249 ) $ (152 ) $ (99 ) $ (72 ) $ (51 ) $ 11 $ (612 ) Net income (loss) (4) $ 960 $ 553 $ 371 $ 269 $ 194 $ (51 ) $ 2,296 Investment in affiliated companies, at equity $ 109 $ 3 $ 6 $ 4 $ 142 $ 264 Segment assets (5) $ 8,498 $ 3,183 $ 2,308 $ 2,150 $ 791 $ 2,024 $ 18,954 Capital expenditures $ 710 $ 301 $ 183 $ 228 $ 128 $ 149 $ 1,699 For the year ended December 31, 2020 Segment net sales $ 3,172 $ 3,563 $ 1,884 $ 1,370 $ 998 $ 465 $ 11,452 Depreciation (1) $ 548 $ 242 $ 162 $ 132 $ 50 $ 81 $ 1,215 Research, development and engineering expenses (2) $ 99 $ 204 $ 155 $ 100 $ 26 $ 170 $ 754 Income tax (provision) benefit (3) $ (190 ) $ (101 ) $ (113 ) $ (52 ) $ (37 ) $ 58 $ (435 ) Net income (loss) (4) $ 717 $ 366 $ 423 $ 197 $ 139 $ (214 ) $ 1,628 Investment in affiliated companies, at equity $ 107 $ 3 $ 4 $ 2 $ 142 $ 258 Segment assets (5) $ 8,777 $ 2,868 $ 2,551 $ 1,986 $ 683 $ 2,157 $ 19,022 Capital expenditures $ 311 $ 127 $ 125 $ 159 $ 83 $ 123 $ 928 For the year ended December 31, 2019 Segment net sales $ 3,254 $ 4,064 $ 1,594 $ 1,499 $ 1,015 $ 230 $ 11,656 Depreciation (1) $ 583 $ 237 $ 145 $ 128 $ 49 $ 50 $ 1,192 Research, development and engineering expenses (2) $ 119 $ 218 $ 154 $ 118 $ 21 $ 237 $ 867 Income tax (provision) benefit (3) $ (206 ) $ (134 ) $ (81 ) $ (70 ) $ (40 ) $ 80 $ (451 ) Net income (loss) (4) $ 786 $ 489 $ 302 $ 263 $ 150 $ (289 ) $ 1,701 Investment in affiliated companies, at equity $ 145 $ 3 $ 3 $ 3 $ 137 $ 291 Segment assets (5) $ 9,022 $ 3,004 $ 2,433 $ 1,912 $ 627 $ 1,028 $ 18,026 Capital expenditures $ 872 $ 329 $ 176 $ 287 $ 80 $ 155 $ 1,899
Reconciliation of Revenue from Segments to Consolidated [Table Text Block]	Year ended December 31, 2021 2020 2019 Net sales of reportable segments and All Other $ 14,120 $ 11,452 $ 11,656 Impact of foreign currency movements (1) (38 ) (44 ) (153 ) Cumulative adjustment related to customer contract (2) (105 ) Consolidated net sales $ 14,082 $ 11,303 $ 11,503
Reconciliation of Net Income (Loss) from Segments to Consolidated [Table Text Block]	Year ended December 31, 2021 2020 2019 Net income of reportable segments $ 2,347 $ 1,842 $ 1,990 Net loss of All Other (1) (51 ) (214 ) (289 ) Unallocated amounts: Impact of foreign currency movements not included in segment net loss (87 ) (22 ) (115 ) Gain (loss) on foreign currency hedges related to translated earnings 354 (46 ) 245 Translation gain (loss) on Japanese yen-denominated debt 180 (86 ) (3 ) Litigation, regulatory and other legal matters (16 ) (144 ) 17 Research, development, and engineering expense (2)(3) (149 ) (153 ) (134 ) Transaction-related gain, net (4) 498 Equity in earnings (losses) of affiliated companies (5) 5 (24 ) 15 Amortization of intangibles (129 ) (121 ) (113 ) Interest expense, net (265 ) (261 ) (200 ) Income tax benefit 120 324 195 Pension mark-to-market (32 ) (31 ) (95 ) Cumulative adjustment related to customer contract (6) (105 ) Severance charges (3) 13 (148 ) (63 ) Asset impairment (3) (217 ) Capacity realignment and other charges and credits (3) (123 ) (462 ) (376 ) Bond redemption loss (7) (31 ) (22 ) (Loss) gain on investment (8) (23 ) 107 Gain on sale of business 54 Other corporate items (261 ) (203 ) (114 ) Net income $ 1,906 $ 512 $ 960
Reconciliation of Assets from Segment to Consolidated [Table Text Block]	December 31, 2021 2020 2019 Total assets of reportable segments $ 16,930 $ 16,865 $ 16,998 Total assets of All Other 2,024 2,157 1,028 Unallocated amounts: Current assets (1) 3,163 3,434 3,301 Investments (2) 54 177 43 Property, plant and equipment, net (3) 1,620 1,548 1,764 Other non-current assets (4) 6,363 6,594 5,764 Total assets $ 30,154 $ 30,775 $ 28,898
Revenue from External Customers by Products and Services [Table Text Block]	Year ended December 31, Revenue from external customers 2021 2020 2019 Display Technologies $ 3,700 $ 3,172 $ 3,254 Optical Communications Carrier network 3,200 2,612 2,885 Enterprise network 1,149 951 1,179 Total Optical Communications 4,349 3,563 4,064 Specialty Materials Corning® Gorilla® Glass 1,403 1,420 1,180 Advanced optics and other specialty glass 605 464 414 Total Specialty Materials 2,008 1,884 1,594 Environmental Technologies Automotive and other 936 883 907 Diesel 650 487 592 Total Environmental Technologies 1,586 1,370 1,499 Life Sciences Labware 671 552 550 Cell culture products 563 446 465 Total Life Science 1,234 998 1,015 All Other Polycrystalline Silicon 892 194 Other 351 271 230 Total All Other 1,243 465 230 Net sales of reportable segments and All Other 14,120 11,452 11,656 Impact of foreign currency movements (1) (38 ) (44 ) (153 ) Cumulative adjustment related to customer contract (2) (105 ) Consolidated net sales $ 14,082 $ 11,303 $ 11,503
Schedule of Revenue from External Customers and Long-Lived Assets, by Geographical Areas [Table Text Block]	2021 2020 2019 Net sales (1)(3) Long-lived assets (2)(3) Net sales (1)(3) Long-lived assets (2)(3) Net sales (1) Long-lived assets (2) North America: United States $ 4,539 $ 8,600 $ 3,412 $ 8,718 $ 3,760 $ 7,654 Canada 472 114 274 121 277 126 Mexico 93 289 75 239 55 267 Total North America 5,104 9,003 3,761 9,078 4,092 8,047 Asia Pacific: Japan 780 496 505 583 441 893 Taiwan 983 1,923 887 2,247 880 2,280 China 4,495 4,966 3,734 4,469 3,096 3,816 Korea 640 3,479 748 3,597 1,051 3,625 Other 459 84 340 83 401 86 Total Asia Pacific 7,357 10,948 6,214 10,979 5,869 10,700 Europe: Germany 462 500 378 579 435 546 Other 925 910 838 931 886 914 Total Europe 1,387 1,410 1,216 1,510 1,321 1,460 All Other 272 68 261 83 374 71 Total $ 14,120 $ 21,429 $ 11,452 $ 21,650 $ 11,656 $ 20,278

Note 1 - Significant Accounti_3

Note 1 - Significant Accounting Policies (Details Textual) - USD ($) $ in Millions	Sep. 09, 2020	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Research and Development Expense, Total		$ 800	$ 1,000	$ 800
Foreign Currency Transaction Gain (Loss), Realized		126	(37)	(19)
Interest Costs Capitalized		$ 36	$ 58	$ 54
HS LLC [Member]
Business Acquisition, Percentage of Voting Interests Acquired	100.00%
Hemlock Semiconductor Operations LLC [Member]
Business Acquisition, Percentage of Voting Interests Acquired	80.50%
DuPont de Nemours, Inc [Member] | HSG [Member]
Noncontrolling Interest, Increase from Redemptions or Purchase of Interests	$ 250
Minimum [Member]
Equity Method Investment, Ownership Percentage		20.00%
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]
Equity Method Investment, Ownership Percentage		50.00%
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

Note 1 - Significant Accounti_4

Note 1 - Significant Accounting Policies - Supplemental Disclosure of Cash Flow Information (Details) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Accruals for capital expenditures		$ 357	$ 231	$ 592
Interest (1)	[1]	287	298	248
Income taxes, net of refunds received		$ 377	$ 220	$ 474
[1]	Included in this amount are approximately $36 million, $58 million and $54 million of interest costs that were capitalized as part of property, plant and equipment, net of accumulated depreciation, in 2021, 2020 and 2019, respectively.

Note 1 - Summary of Significant

Note 1 - Summary of Significant Accounting Policies - Useful Life of Equipment (Details)	12 Months Ended
	Dec. 31, 2021
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, 2021	Dec. 31, 2020	Dec. 31, 2019
Severance Costs	$ (13)	$ 148	$ 63
Asset Impairment Charges, Total		217
Display Technologies and Optical Communications [Member]
Severance Costs		148	$ 63
Other Segments [Member] | Research and Development Expense [Member]
Asset Impairment Charges, Total		$ 217

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, 2021	Dec. 31, 2020	Dec. 31, 2019
Severance (reversals) charges		$ (13)	$ 148	$ 63
Asset impairment			217
Capacity realignment		46	304	312
Other charges and credits		77	158	64
Total restructuring, impairment and other charges and credits		110	827	439
Cost of Sales [Member]
Total restructuring, impairment and other charges and credits	[1]	80	443	388
Selling, General and Administrative Expenses [Member]
Asset impairment			6
Total restructuring, impairment and other charges and credits		(3)	116	28
Research, Development And Engineering Expenses [Member]
Asset impairment			211
Total restructuring, impairment and other charges and credits		1	247	30
Other Nonoperating Income (Expense) [Member]
Total restructuring, impairment and other charges and credits		32	21	(7)
Employee Severance [Member]
Restructuring charges		(13)	148	63
Employee Severance [Member] | Cost of Sales [Member]
Restructuring charges	[1]	(6)	83	30
Employee Severance [Member] | Selling, General and Administrative Expenses [Member]
Restructuring charges		(5)	34	20
Employee Severance [Member] | Research, Development And Engineering Expenses [Member]
Restructuring charges		(2)	31	13
Capacity Realignment [Member]
Restructuring charges		46	304	312
Capacity Realignment [Member] | Cost of Sales [Member]
Restructuring charges	[1]	36	288	298
Capacity Realignment [Member] | Selling, General and Administrative Expenses [Member]
Restructuring charges		7	16
Capacity Realignment [Member] | Research, Development And Engineering Expenses [Member]
Restructuring charges		3		14
Other Restructuring [Member]
Restructuring charges		77	158	64
Other Restructuring [Member] | Cost of Sales [Member]
Restructuring charges	[1]	50	72	60
Other Restructuring [Member] | Selling, General and Administrative Expenses [Member]
Restructuring charges		(5)	60	8
Other Restructuring [Member] | Research, Development And Engineering Expenses [Member]
Restructuring charges			5	3
Other Restructuring [Member] | Other Nonoperating Income (Expense) [Member]
Restructuring charges		$ 32	$ 21	$ (7)
[1]	Activity reflected in cost of sales.

Note 3 - Investments (Details T

Note 3 - Investments (Details Textual) - USD ($) $ in Millions	Sep. 09, 2020	Sep. 30, 2020	Jun. 30, 2020	Dec. 31, 2021	Sep. 09, 2021	Dec. 31, 2020	Dec. 31, 2016
Debt, Current, Total				$ 55		$ 156
HSG [Member]
Gain (Loss) Related to Litigation Settlement, Total		$ (81)
Cash, Ending Balance	$ 75
Debt, Current, Total	175
Equity Method Investment, Summarized Financial Information, Pre-Tax Gain (Loss) on Settlements of Long-term Sales Agreements		200	$ 165
Inventory Write-down			$ 44
Equity Method Investment, Summarized Financial Information, Gains (Loss) on Settlements of Long-term Sales Agreements, Net		$ (19)
Duponts Trichlorosilane [Member] | HSG [Member]
Business Combination, Consideration Transferred, Total	255
Business Combination, Assets Arising from Contingencies, Amount Recognized	175
Business Acquisition, Preacquisition Contingency, Amount of Settlement	200
Business Acquisition, Preacquisition Contingency, Amount of Settlement, Periodic Payment	58
Gain (Loss) Related to Litigation Settlement, Total	(81)
Hemlock Semiconductor Operations LLC [Member]
Business Combination, Consideration Transferred, Total	352
Business Combination, Assets Arising from Contingencies, Amount Recognized	$ 20
Business Acquisition, Percentage of Voting Interests Acquired	80.50%
Hemlock Semiconductor Operations LLC [Member] | HSG [Member]
Redeemable Noncontrolling Interest, Equity, Redemption Value, Total	$ 250
HS LLC [Member]
Business Acquisition, Percentage of Voting Interests Acquired	100.00%
HSG [Member]
Business Combination, Consideration Transferred, Total	$ 250
Business Acquisition, Redemption Price					$ 250
Dow Corning Corporation [Member]
Equity Method Investment, Ownership Percentage							50.00%
Hemlock Semiconductor LLC [Member]
Equity Method Investment, Ownership Percentage							49.90%
Hemlock Semiconductor Operations LLC [Member]
Equity Method Investment, Ownership Percentage							40.25%

Note 3 - Investments - Investme

Note 3 - Investments - Investments (Details) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
Other investments	$ 64	$ 177
Total investment assets	$ 328	435
Affiliated Companies [Member]
Affiliated companies accounted for by the equity method, percentage	50.00%
Affiliated companies accounted for by the equity method	$ 264	$ 258

Note 3 - Investments - Results

Note 3 - Investments - Results From Operations (Details) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Net sales		$ 14,082	$ 11,303	$ 11,503
Gross profit		5,063	3,531	4,035
Net income (loss) attributable to the affiliated companies		1,935	523	979
Corning’s equity in earnings (losses) of affiliated companies		35	(25)	17
Dividends received from affiliated companies		8	1	106
Current assets		7,659	8,004
Short-term borrowings, including current portion of long-term debt		55	156
Other long-term liabilities		5,192	5,017
Non-controlling interest		212	191
Intercompany receivables and payables within HSG (included in current assets and other current liabilities)			8
Affiliated Companies [Member]
Net sales	[1]	816	1,201	1,508
Gross profit	[1]	104	136	79
Net income (loss)	[1]	113	(48)	(102)
Net income (loss) attributable to the affiliated companies	[1]	114	(15)	70
Corning’s equity in earnings (losses) of affiliated companies	[1]	35	(25)	17
Corning sales to affiliated companies		312	253	277
Corning purchases from affiliated companies		12	8	12
Corning transfers of assets, at cost, to affiliated companies		1	9	8
Dividends received from affiliated companies		6	1	106
Current assets		648	534
Noncurrent assets		549	466
Short-term borrowings, including current portion of long-term debt		6	2
Other current liabilities		159	164
Long-term debt		58	60
Other long-term liabilities		66	11
Balances due from affiliated companies		38	36
Balances due to affiliated companies		1	1
HSG [Member]
Net sales			423	779
Gross profit			87	9
Net income (loss)	[2]		11	(117)
Net income (loss) attributable to the affiliated companies			44	54
Corning’s equity in earnings (losses) of affiliated companies			22	27
Corning sales to affiliated companies			55	112
Dividends received from affiliated companies				$ 100
Current assets			853
Noncurrent assets			725
Short-term borrowings, including current portion of long-term debt			178
Other current liabilities			337
Long-term debt			6
Other long-term liabilities			1,499
Non-controlling interest			$ 9
[1]	The year ended December 31, 2020, only include HSG's results of operations through September 8, 2020. Immediately following the Redemption, Corning began consolidating HSG on September 9, 2020.
[2]	HSG's net income for the period ended September 8, 2020, included a pre-tax gain recorded in the second quarter of 2020, related to the settlement of a long-term supply agreement of approximately $165 million, partially offset by an inventory provision of approximately $44 million associated with the settlement of the agreement. Prior to the Redemption, in the third quarter of 2020, HSG recorded a pre-tax loss of $200 million resulting from the TCS Settlement, of which Corning’s share of the pre-tax loss was $81 million. Accordingly, Corning’s share of the net impact was an equity loss of $19 million.

Note 4 - HSG Transactions and_3

Note 4 - HSG Transactions and Acquisitions (Details Textual) $ in Millions	Sep. 09, 2020USD ($)
HSG [Member]
Contract With Customer Liability, Deferred Revenue	$ 1,070
HSG [Member] | Developed Technologies [Member]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill, Total	$ 215
Finite-Lived Intangible Asset, Useful Life (Year)	20 years
HSG [Member] | Other Intangible Assets [Member]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill, Total	$ 70
Finite-Lived Intangible Asset, Useful Life (Year)	15 years
HSG [Member]
Redeemable Noncontrolling Interest, Equity, Redemption Value, Total	$ 250
Equity Method Investment, Realized Gain (Loss) on Disposal, Total	$ 498
HSG [Member] | Measurement Input, Discount Rate [Member]
Equity Securities, FV-NI, Measurement Input	0.165
HSG [Member] | DuPont de Nemours, Inc [Member]
Noncontrolling Interest, Increase from Redemptions or Purchase of Interests	$ 250
Duponts Trichlorosilane [Member] | HSG [Member]
Business Combination, Consideration Transferred, Total	255
Business Combination, Assets Arising from Contingencies, Amount Recognized	$ 175
HS LLC [Member]
Business Acquisition, Percentage of Voting Interests Acquired	100.00%
Hemlock Semiconductor Operations LLC [Member]
Business Combination, Consideration Transferred, Total	$ 352
Business Acquisition, Percentage of Voting Interests Acquired	80.50%
Business Combination, Assets Arising from Contingencies, Amount Recognized	$ 20
Equity Method Investments	250
Business Combination, Acquisition of Less than 100 Percent, Noncontrolling Interest, Fair Value	102
Hemlock Semiconductor Operations LLC [Member] | HSG [Member]
Redeemable Noncontrolling Interest, Equity, Redemption Value, Total	250
HSG [Member]
Business Combination, Consideration Transferred, Total	250
Equity Method Investment, Realized Gain (Loss) on Disposal, Total	498
Equity Method Investments	250	[1]
Business Combination, Acquisition of Less than 100 Percent, Noncontrolling Interest, Fair Value	102	[1]
Contract With Customer Liability, Customer Deposit	264
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill, Total	285
Business Acquisition, Transaction Costs	$ 12
HSG [Member] | Minimum [Member]
Customer Deposits, Measurement Input	0.0254
HSG [Member] | Maximum [Member]
Customer Deposits, Measurement Input	0.0323
[1]	The purchase price used to measure the goodwill of the Redemption is $352 million, including the fair value of Corning’s previously held equity interest and non-controlling interest, in the amount of $250 million and $102 million, respectively.

Note 4 - HSG Transactions and_4

Note 4 - HSG Transactions and Acquisitions - Net Gain on Previously Owned Equity (Details) - HSG [Member] $ in Millions	Sep. 09, 2020USD ($)
Fair value of previously held equity investment	$ 250
Equity investment liability balance as of acquisition date	(248)
Corning's gain on previously held equity investment	$ 498

Note 4 - HSG Transactions and_5

Note 4 - HSG Transactions and Acquisitions - Recognized Amounts of Identified Assets Acquired and Liabilities Assumed (Details) - USD ($) $ in Millions		Dec. 31, 2021	Dec. 31, 2020	Sep. 09, 2020	Dec. 31, 2019
Goodwill		$ 2,421	$ 2,460		$ 1,935
HSG [Member]
Inventory				$ 503
Property, plant and equipment				651
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill, Total				285
Other current and non-current assets	[1]			173
Short-term borrowings				(178)
Trade payables and other accrued liabilities				(329)
Other liabilities				(1,261)
Total identified net liabilities				(156)
Non-controlling interests	[2]			(102)
Total fair value of Corning's previously held equity investment	[2]			(250)
Goodwill	[3]			$ 508
[1]	The other current and non-current assets included a contingent consideration asset of $20 million at fair value for a cost adjustment contract related to the TCS Transaction. Refer to Note 16 (Fair Value Measurements) to the consolidated financial statements for additional information.
[2]	The purchase price used to measure the goodwill of the Redemption is $352 million, including the fair value of Corning’s previously held equity interest and non-controlling interest, in the amount of $250 million and $102 million, respectively.
[3]	The goodwill recognized is not deductible for U.S. income tax purposes. The goodwill was allocated to "All Other" within segment reporting as disclosed in Note 20 (Reportable Segments) to the consolidated financial statements for more information.

Note 5 - Revenue (Details Textu

Note 5 - Revenue (Details Textual) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Mar. 31, 2020	Dec. 31, 2021	Dec. 31, 2020
Revenue, Cumulative Adjustments	$ (105)		$ 105	[1]
Contract with Customer, Liability, Total		$ 1,300	1,400
Increase (Decrease) in Contract with Customer, Liability		216	140
Contract with Customer, Liability, Noncurrent		1,072	1,148
Contract with Customer, Liability, Current		223	211
Contract With Customer Liability, Deferred Revenue, Noncurrent		764	872
Contract With Customer Liability, Deferred Revenue, Current		148	152
HSG [Member]
Contract with Customer, Liability, Total		912	1,000
Contract With Customer Liability, Deferred Revenue, Noncurrent		764	872
Contract With Customer Liability, Deferred Revenue, Current		$ 148	$ 152
Maximum [Member]
Long Term Supply, Commitment Period (Year)		10 years
[1]	Amount represents the negative impact of a cumulative adjustment to reduce revenue by $105 million recorded during the first quarter of 2020. The adjustment was associated with a previously recorded commercial benefit asset, reflected as a prepayment, to a customer with a long-term supply agreement that substantially exited its production of LCD panels.

Note 5 - Revenue - Disaggregati

Note 5 - Revenue - Disaggregation of Revenue (Details) - USD ($) $ in Millions		3 Months Ended	12 Months Ended
		Mar. 31, 2020	Dec. 31, 2021	Dec. 31, 2020		Dec. 31, 2019
Net sales			$ 14,082	$ 11,303		$ 11,503
Impact of foreign currency movements	[1]		38	44		153
Cumulative adjustment related to customer contract		$ (105)		105	[2]
Net sales of reportable segments and All Other			14,120	11,452		11,656
Display Products [Member]
Net sales			3,666	3,077		3,180
Telecommunication Products [Member]
Net sales			4,349	3,563		4,064
Specialty Glass Products [Member]
Net sales			2,008	1,884		1,594
Environmental Substrate and Filter Products [Member]
Net sales			1,584	1,333		1,440
Life Science Products [Member]
Net sales			1,232	981		995
Product and Service, Other [Member]
Net sales	[3]		$ 1,243	$ 465		$ 230
[1]	This amount primarily represents the impact of foreign currency adjustments in the Display Technologies segment.
[2]	Amount represents the negative impact of a cumulative adjustment to reduce revenue by $105 million recorded during the first quarter of 2020. The adjustment was associated with a previously recorded commercial benefit asset, reflected as a prepayment, to a customer with a long-term supply agreement that substantially exited its production of LCD panels.
[3]	The Company obtained a controlling interest in HSG during the third quarter of 2020 and has consolidated results in "All Other" as of September 9, 2020.

Note 6 - Inventories, Net - Inv

Note 6 - Inventories, Net - Inventories, Net (Details) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
Finished goods	$ 1,190	$ 1,236
Work in process	358	357
Raw materials and accessories	427	370
Supplies and packing materials	506	475
Total inventories, net	$ 2,481	$ 2,438

Note 7 - Leases (Details Textua

Note 7 - Leases (Details Textual) $ in Millions	Dec. 31, 2021USD ($)
Operating Lease, Weighted Average Remaining Lease Term (Year)	12 years 10 months 24 days
Finance Lease, Weighted Average Remaining Lease Term (Year)	15 years
Operating Lease, Weighted Average Discount Rate, Percent	4.00%
Finance Lease, Weighted Average Discount Rate, Percent	4.40%
Lessee, Operating Lease, Lease Not yet Commenced	$ 122
Minimum [Member]
Lessee, Operating Lease, Lease Not yet Commenced, Term of Contract (Year)	10 years
Maximum [Member]
Lessee, Operating Lease, Lease Not yet Commenced, Term of Contract (Year)	20 years

Note 7 - Leases - Components of

Note 7 - Leases - Components of Lease Expense (Details) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2021	Dec. 31, 2020
Depreciation of right-of-use assets		$ 17	$ 15
Interest on lease liabilities		8	7
Total finance lease expense		25	22
Operating lease expense		139	133
Variable lease expense		59	41
Short-term lease expense		2	4
Total lease expense		225	200
Principal	[1]	13	10
Interest	[1]	8	7
Total finance lease payments	[1]	21	17
Operating lease payments	[1]	134	121
Total lease payments	[1]	$ 155	$ 138
[1]	Principle payments for finance leases have been classified as an investing outflow, and cash payments for operating leases, along with interest payments for finance leases, have been classified as an operating outflow on the consolidated statements of cash flows.

Note 7 - Leases - Supplemental

Note 7 - Leases - Supplemental Balance Sheet (Details) - USD ($) $ in Millions		Dec. 31, 2021	Dec. 31, 2020
Operating lease right-of-use assets, net (1)		$ 741	$ 680
Total operating lease liabilities		785
Total finance lease liabilities		183
Other Noncurrent Assets [Member]
Operating lease right-of-use assets, net (1)	[1]	741	680
Other Current Liabilities [Member]
Other current liabilities		94	96
Other Noncurrent Liabilities [Member]
Operating lease liabilities (2)	[2]	691	633
Other Liabilities [Member]
Total operating lease liabilities		785	729
Property and Equipment, Net [Member]
Property and equipment, at cost		200	184
Accumulated depreciation		(40)	(27)
Property and equipment, net		160	157
Current Portion of Long-term Debt [Member]
Current portion of long-term debt		15	10
Long-term Debt [Member]
Long-term debt		168	163
Current Portion of Long-term Debt and Long-term Debt [Member]
Total finance lease liabilities		$ 183	$ 173
[1]	Included in other assets.
[2]	Included in other liabilities.

Note 7 - Lease - Maturities of

Note 7 - Lease - Maturities of Lease Liabilities (Details) $ in Millions	Dec. 31, 2021USD ($)
Operating leases 2022	$ 103
Operating leases 2023	110
Operating leases 2024	97
Operating leases 2025	85
Operating leases 2026	78
Operating leases after 2026	553
Operating leases, gross	1,026
Operating leases, imputed discount	(241)
Operating leases, net	785
Finance leases 2022	22
Finance leases 2023	27
Finance leases 2024	21
Finance leases 2025	15
Finance leases 2026	32
Finance leases after 2026	142
Finance leases, gross	259
Finance leases, imputed discount	(76)
Finance leases, net	$ 183

Note 8 - Income Taxes (Details

Note 8 - Income Taxes (Details Textual) - USD ($) $ in Millions	Sep. 09, 2020	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Increase (Decrease) in Deferred Liabilities, Total	$ 116
Foreign Earnings Repatriated		$ 2,300
Undistributed Earnings of Foreign Subsidiaries		2,400
Unrecognized Tax Benefits that Would Impact Effective Tax Rate		120	$ 102	$ 35
National Tax Service of Korea [Member]
Income Taxes Receivable, Noncurrent		$ 350	$ 365
Hemlock Semiconductor LLC [Member]
Business Acquisition, Percentage of Voting Interests Acquired	100.00%
Hemlock Semiconductor Operations LLC [Member]
Business Acquisition, Percentage of Voting Interests Acquired	80.50%

Note 8 - Income Taxes - Income

Note 8 - Income Taxes - Income Before Income Taxes (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
U.S. companies	$ 1,254	$ (71)	$ 504
Non-U.S. companies	1,143	694	712
Income before income taxes	$ 2,397	$ 623	$ 1,216

Note 8 - Income Taxes - Current

Note 8 - Income Taxes - Current and Deferred Amounts of Provision (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Federal	$ (172)	$ 88	$ (82)
State and municipal	(13)	(16)	(12)
Foreign	(290)	(203)	(354)
Federal	(97)	7	64
State and municipal	(7)	3	13
Foreign	88	10	115
Provision for income taxes	$ (491)	$ (111)	$ (256)

Note 8 - Income Taxes - Reconci

Note 8 - Income Taxes - Reconciliation of the U.S. Statutory Income Tax Rate to Effective Tax Rate (Details)		12 Months Ended
		Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Statutory U.S. income tax rate		21.00%	21.00%	21.00%
State income tax, net of federal effect		1.00%	1.40%	0.60%
Global intangible low-taxed income		(0.20%)	0.50%	(1.20%)
Foreign derived intangible income		(1.30%)		(8.50%)
Remeasurement of deferred tax assets and liabilities			(13.40%)	(0.60%)
Differential arising from foreign earnings (1)	[1]	2.00%	15.20%	5.40%
IRS settlements & change in reserve		1.60%	12.10%	8.50%
Valuation allowance		(0.50%)	2.50%	(3.70%)
Tax credits		(2.60%)	(29.70%)	(2.80%)
Stock compensation		(1.50%)	(1.70%)	(0.60%)
Legal entity rationalization			(2.20%)
Intercompany loan adjustment			(6.20%)	0.50%
Non-deductible expenses		1.40%	7.00%	2.10%
Other items, net		(0.80%)	(0.10%)	(1.00%)
Effective income tax rate		20.50%	17.80%	21.10%
[1]	Includes impact of intercompany asset sales.

Note 8 - Income Taxes - Tax Eff

Note 8 - Income Taxes - Tax Effects of Temporary Differences and Carryforwards of Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Loss and tax credit carryforwards	$ 375	$ 637
Other assets	281	269
Asset impairments and restructuring reserves	30	29
Postretirement medical and life benefits	154	171
Other accrued liabilities	354	162
Other employee benefits	329	337
Gross deferred tax assets	1,523	1,605
Valuation allowances	(138)	(167)	$ (215)	$ (317)
Total deferred tax assets	1,385	1,438
Intangible and other assets	(103)	(95)
Fixed assets	(300)	(375)
Finance leases	(174)	(160)
Total deferred tax liabilities	(577)	(630)
Net deferred tax assets	$ 808	$ 808

Note 8 - Income Taxes - Net Def

Note 8 - Income Taxes - Net Deferred Tax Assets (Details) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
Deferred tax assets	$ 1,066	$ 1,121
Other liabilities	(258)	(313)
Net deferred tax assets	$ 808	$ 808

Note 8 - Income Taxes - Deferre

Note 8 - Income Taxes - Deferred Tax Assets for Loss and Tax Credit Carryforwards (Details) $ in Millions	Dec. 31, 2021USD ($)
Net operating losses	$ 303
Tax credits	72
Balance as of December 31, 2021	375
Tax Years 2022 Through 2026 [Member]
Net operating losses	102
Tax credits	7
Balance as of December 31, 2021	109
Tax Years 2027 Through 2031 [Member]
Net operating losses	16
Tax credits	1
Balance as of December 31, 2021	17
Tax Years 2032 Through 2041 [Member]
Net operating losses	41
Tax credits	59
Balance as of December 31, 2021	100
Indefinite [Member]
Net operating losses	144
Tax credits	5
Balance as of December 31, 2021	$ 149

Note 8 - Income Taxes - Defer_2

Note 8 - Income Taxes - Deferred Tax Valuation Allowances (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Balance	$ 167	$ 215	$ 317
Additions	13	27	10
Net deductions and other	42	75	112
Balance	$ 138	$ 167	$ 215

Note 8 - Income Taxes - Recon_2

Note 8 - Income Taxes - Reconciliation of Unrecognized Tax Benefits (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Balance at January 1	$ 131	$ 62	$ 435
Additions based on tax positions related to the current year	54	19	3
Additions for tax positions of prior years	17	53	2
Reductions for tax positions of prior years	(21)
Settlements and lapse of statute of limitations	(3)	(3)	(378)
Balance at December 31	$ 178	$ 131	$ 62

Note 9 - Property, Plant and _3

Note 9 - Property, Plant and Equipment, Net of Accumulated Depreciation (Details Textual) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Interest Costs Capitalized	$ 36	$ 58	$ 54
Precious Metals	3,500	3,400
Depletion, Total	$ 28	$ 24	$ 16

Note 9 - Property, Plant and _4

Note 9 - Property, Plant and Equipment, Net of Accumulated Depreciation - Property, Plant and Equipment, Net of Accumulated Depreciation (Details) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
Property, plant and equipment	$ 29,773	$ 29,405
Accumulated depreciation	(13,969)	(13,663)
Total	15,804	15,742
Land [Member]
Property, plant and equipment	441	471
Building [Member]
Property, plant and equipment	6,145	6,453
Equipment [Member]
Property, plant and equipment	21,208	20,563
Construction in Progress [Member]
Property, plant and equipment	$ 1,979	$ 1,918

Note 10 - Goodwill and Other _3

Note 10 - Goodwill and Other Intangible Assets (Details Textual) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Goodwill, Gross	$ 8,900	$ 9,000
Goodwill, Impaired, Accumulated Impairment Loss	6,500	6,500
Amortization of Intangible Assets, Total	129	$ 121	$ 113
Disposal Group, Including Discontinued Operation, Intangible Assets	24
Finite Lived Intangible Assets, Foreign Currency Translation Gain (Loss)	7
Finite-Lived Intangible Asset, Expected Amortization, Year One	120
Finite-Lived Intangible Asset, Expected Amortization, Year Two	120
Finite-Lived Intangible Asset, Expected Amortization, Year Three	120
Finite-Lived Intangible Asset, Expected Amortization, Year Four	120
Finite-Lived Intangible Asset, Expected Amortization, Year Five	$ 120

Note 10 - Goodwill and Other _4

Note 10 - Goodwill and Other Intangible Assets - Carrying Amount of Goodwill (Details) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2021	Dec. 31, 2020
Balance		$ 2,460	$ 1,935
Acquired goodwill (1)	[1]		495
Foreign currency translation adjustment and other		(39)	30
Balance		2,421	2,460
Display Technologies [Member]
Balance		132	129
Foreign currency translation adjustment and other		(7)	3
Balance		125	132
Optical Communications [Member]
Balance		943	931
Foreign currency translation adjustment and other		(28)	12
Balance		915	943
Specialty Materials [Member]
Balance		150	150
Balance		150	150
Life Science Products [Member]
Balance		618	616
Foreign currency translation adjustment and other		(2)	2
Balance		616	618
Segments All Other Member [Member]
Balance		617	109
Acquired goodwill (1)	[1]		495
Foreign currency translation adjustment and other		(2)	13
Balance		$ 615	$ 617
[1]	The Company obtained a controlling interest in HSG during the third quarter of 2020. Refer to Note 4 (HSG Transactions and Acquisitions) to the consolidated financial statements for additional information on this transaction.

Note 10 - Goodwill and Other _5

Note 10 - Goodwill and Other Intangible Assets - Other Intangible Assets (Details) - USD ($) $ in Millions		Dec. 31, 2021	Dec. 31, 2020
Other intangible assets, gross		$ 1,962	$ 2,017
Other intangible assets, accumulated amortization		814	709
Other intangible assets, net		1,148	1,308
Patents, Trademarks and Tradenames [Member]
Other intangible assets, gross		498	500
Other intangible assets, accumulated amortization		279	255
Other intangible assets, net		219	245
Customer Lists and Other [Member]
Other intangible assets, gross	[1]	1,464	1,517
Other intangible assets, accumulated amortization	[1]	535	454
Other intangible assets, net	[1]	$ 929	$ 1,063
[1]	Other is comprised of intangible assets related to developed technologies and intellectual know-how.

Note 11 - Other Assets and Ot_3

Note 11 - Other Assets and Other Liabilities - Other Assets (Details) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
Derivative instruments (Note 15)	$ 336	$ 148
Other current assets	690	613
Other current assets	1,026	761
Derivative instruments (Note 15)	164	123
South Korean tax deposits	350	365
Operating lease right-of-use assets, net (1)	741	680
Investments (Note 3)	318	435
Other non-current assets	483	537
Other assets	$ 2,056	$ 2,140

Note 11 - Other Assets and Ot_4

Note 11 - Other Assets and Other Liabilities - Other Liabilities (Details) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
Wages and employee benefits	$ 824	$ 572
Income taxes	196	173
Derivative instruments (Note 15)	144	189
Deferred revenue (Note 5)	148	152
Settlement liability (Note 4)	58	58
Customer deposits (Note 5)	223	211
Share repurchase liability (Note 17)	506
Short-term leases (Note 7)	94	96
Other current liabilities	946	986
Other accrued liabilities	3,139	2,437
Defined benefit pension plan liabilities	707	887
Derivative instruments (Note 15)	49	155
Deferred revenue (Note 5)	764	872
Settlement liability (Note 4)	58	117
Customer deposits (Note 5)	1,072	1,148
Share repurchase liability (Note 17)	517
Deferred tax liabilities	258	313
Long-term leases (Note 7)	691	633
Asbestos and other litigation	35	94
Other non-current liabilities	1,041	798
Other liabilities	$ 5,192	$ 5,017

Note 12 - Debt (Details Textual

Note 12 - Debt (Details Textual) $ in Thousands, ¥ in Millions, ¥ in Billions	3 Months Ended					12 Months Ended
	Sep. 30, 2021USD ($)	Jun. 30, 2021USD ($)	Dec. 31, 2020USD ($)	Jun. 30, 2020USD ($)	Mar. 31, 2020USD ($)	Dec. 31, 2021USD ($)	Dec. 31, 2021CNY (¥)	Dec. 31, 2020USD ($)	Dec. 31, 2019USD ($)	Dec. 31, 2021JPY (¥)	Dec. 31, 2020CNY (¥)	Sep. 09, 2020USD ($)	Jun. 30, 2020JPY (¥)	Mar. 31, 2020CNY (¥)
Long-term Debt and Lease Obligation, Total			$ 7,816,000			$ 6,989,000		$ 7,816,000
Short-term Debt, Total			75,000					75,000
Repayments of Long-term Debt, Total						716,000		121,000	$ 300,000
Debentures Due in 2023 [Member]
Extinguishment of Debt, Amount	$ 250,000
Debt Instrument, Interest Rate, Stated Percentage	3.70%
Payment for Debt Extinguishment or Debt Prepayment Cost	$ 19,000
Gain (Loss) on Extinguishment of Debt, Total	$ 20,000
Debentures Due in 2022 [Member]
Extinguishment of Debt, Amount		$ 375,000
Debt Instrument, Interest Rate, Stated Percentage		2.90%
Payment for Debt Extinguishment or Debt Prepayment Cost		$ 10,000
Gain (Loss) on Extinguishment of Debt, Total		$ 11,000
Debentures Due in 2023 [Member]
Repayments of Long-term Debt, Total						269,000
Debentures Due in 2022 [Member]
Repayments of Long-term Debt, Total						385,000
Unsecured Variable Rate Loan Facilities D [Member]
Line of Credit Facility, Maximum Borrowing Capacity			$ 84,000					$ 84,000			¥ 546
Repayments of Unsecured Debt						277,000	¥ 1,764
Debt Instrument, Term (Year)			5 years
Incremental Liquidity Facility [Member]
Line of Credit Facility, Maximum Borrowing Capacity						217,000				¥ 25
Debentures, 7.00%, Due 2024 [Member]
Debt Instrument, Interest Rate, Stated Percentage			7.00%					7.00%			7.00%
Payment for Debt Extinguishment or Debt Prepayment Cost			$ 21,000
Gain (Loss) on Extinguishment of Debt, Total			22,000
Repayments of Long-term Debt, Total			121,000
Early Repayment of Senior Debt			100,000
Long-term Debt, Total			99,000					$ 99,000
Unsecured Variable Rate Loan Facilities B [Member]
Line of Credit Facility, Maximum Borrowing Capacity					$ 150,000									¥ 1,050
Debt Instrument, Term (Year)					5 years
Unsecured Variable Rate Loan Facilities, C [Member]
Line of Credit Facility, Maximum Borrowing Capacity					$ 105,000									¥ 749
Debt Instrument, Term (Year)					5 years
Unsecured Variable Rate Loan Facility [Member]
Long-term Line of Credit, Total			243,000					243,000			¥ 1,691
Revolving Credit Facility [Member] | Amended Credit Facility [Member]
Line of Credit Facility, Maximum Borrowing Capacity						1,500,000
Variable Rate Loan Facility [Member]
Debt Instrument, Fair Value Disclosure, Total												$ 175,000
Incremental Liquidity Facility [Member]
Line of Credit Facility, Maximum Borrowing Capacity				$ 232,000									¥ 25
Debt Instrument, Term (Year)				3 years
Long-term Line of Credit, Total			0					0
Commercial Paper [Member]
Short-term Debt, Total			0			0		0
Fair Value, Inputs, Level 2 [Member]
Long-term Debt, Fair Value			$ 9,400,000			$ 8,300,000		$ 9,400,000

Note 12 - Debt - Long-term Debt

Note 12 - Debt - Long-term Debt (Details) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
Current portion of long-term debt	$ 55	$ 81
Short-term borrowings		75
Current portion of long-term debt and short-term borrowings	55	156
Total long-term debt, including current portion	7,044	7,897
Long-term debt	6,989	7,816
Debentures 8.875 Due 2021 [Member]
Debentures		63
Debentures 29% Due 2022 [Member]
Debentures		374
Debentures, 3.70%, due 2023 [Member]
Debentures		249
Medium-Term Notes, Average Rate 7.66%, Due Through 2023 [Member]
Debentures	45	45
Debentures 3.9 Due 2049 [Member]
Debentures	395	394
Debentures 5.45 Due 2079 [Member]
Debentures	1,086	1,084
Yen-denominated Debentures, 0.698%, due 2024 [Member]
Debentures	182	203
Yen-denominated Debentures, 0.722%, due 2025 [Member]
Debentures	87	96
Yen-denominated Debentures, .992%, due 2027 [Member]
Debentures	407	453
Yen-denominated Debentures, 1.043%, due 2028 [Member]
Debentures	264	293
Yen Denominated Debentures, 1.153 Due 2031 [Member]
Debentures	270	301
Yen Denominated Debentures, 1.513 Due 2039 [Member]
Debentures	51	56
Debentures, 6.85%, Due 2029 [Member]
Debentures	160	161
Yen-denominated Debentures, 1.219%, due 2030 [Member]
Debentures	216	239
Debentures, Callable, 7.25%, Due 2036 [Member]
Debentures	249	249
Debentures, 4.70%, Due 2037 [Member]
Debentures	296	296
Yen-denominated Debentures, 1.583%, due 2037 [Member]
Debentures	86	96
Debentures, 5.75%, Due 2040 [Member]
Debentures	396	396
Debentures, 4.75%, Due 2042 [Member]
Debentures	496	496
Debentures, 5.35%, due 2048 [Member]
Debentures	544	543
Debentures, 4.375%, due 2057 [Member]
Debentures	743	743
Debentures, 5.85%, due 2068 [Member]
Debentures	297	296
Financing Leases, Average Discount Rate 5.7%, Due Through 2044 [Member]
Debentures	183	173
Other Debt, Average Rate of 4.33% Due Through 2043 [Member]
Debentures	$ 591	$ 598

Note 12 - Debt - Long-term De_2

Note 12 - Debt - Long-term Debt (Details) (Parentheticals)	Dec. 31, 2021	Dec. 31, 2020
Debentures 8.875 Due 2021 [Member]
Interest rate on debt	8.875%	8.875%
Debentures 29% Due 2022 [Member]
Interest rate on debt	2.90%	2.90%
Debentures, 3.70%, due 2023 [Member]
Interest rate on debt	3.70%	3.70%
Medium-Term Notes, Average Rate 7.66%, Due Through 2023 [Member]
Interest rate on debt	7.66%	7.66%
Debentures 3.9 Due 2049 [Member]
Interest rate on debt	3.90%	3.90%
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, 1.153 Due 2031 [Member]
Interest rate on debt	1.153%	1.153%
Yen Denominated Debentures, 1.513 Due 2039 [Member]
Interest rate on debt	1.513%	1.513%
Debentures, 6.85%, Due 2029 [Member]
Interest rate on debt	6.85%
Yen-denominated Debentures, 1.219%, due 2030 [Member]
Interest rate on debt	1.219%	1.219%
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%
Yen-denominated Debentures, 1.583%, due 2037 [Member]
Interest rate on debt	1.583%	1.583%
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, 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%
Financing Leases, Average Discount Rate 5.7%, Due Through 2044 [Member]
Interest rate on debt	4.40%	4.40%
Other Debt, Average Rate of 4.33% Due Through 2043 [Member]
Interest rate on debt	4.33%	4.33%

Note 12 - Debt - Debt Maturitie

Note 12 - Debt - Debt Maturities (Details) $ in Millions	Dec. 31, 2021USD ($)	[1]
Long-term debt, due 2022	$ 55
Long-term debt, due 2023	141
Long-term debt, due 2024	293
Long-term debt, due 2025	166
Long-term debt, due 2026	36
Long-term debt, due Thereafter	$ 6,353
[1]	Excludes interest rate swap gains, bond discounts and deferred expenses.

Note 13 - Employee Retirement_3

Note 13 - Employee Retirement Plans (Details Textual) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Credit Risk of Plan Assets, Long Duration Corporate Bonds		56.00%
Currency Fluctuations Assets Invested In Non Us Investments		6.00%
Liquidity Risk Long-term Investments In Private Equity and Real Estate		1.00%
Defined Contribution Plan, Cost		$ 98,000	$ 76,000	$ 108,000
Equity Securities [Member]
Defined Benefit Plan, Plan Assets, Target Allocation, Percentage		40.00%
Bond Investments [Member]
Defined Benefit Plan, Plan Assets, Target Allocation, Percentage		60.00%
Minimum [Member]
Percent To Yield		10.00%
Maximum [Member]
Percent To Yield		40.00%
Pension Plan [Member]
Defined Benefit Plan, Benefit Obligation, Actuarial Gain (Loss)	$ (358,000)	$ 124,000
Defined Benefit Plan, Accumulated Benefit Obligation	$ 4,700,000	4,500,000	4,700,000
Pension Plan [Member] | UNITED STATES
Defined Benefit Plan Voluntary Contributions by Employer		0	180,000
Defined Benefit Plan, Plan Assets, Contributions by Employer		$ 16,000	195,000
Weighted Average Discount Rate, Rounded Amount	0.78%	0.37%
Pension Plan [Member] | Foreign Plan [Member]
Defined Benefit Plan Voluntary Contributions by Employer		$ 24,000	41,000
Defined Benefit Plan, Expected Future Employer Contributions, Next Fiscal Year		29,000
Defined Benefit Plan, Plan Assets, Contributions by Employer		$ 31,000	50,000
Weighted Average Discount Rate, Rounded Amount		0.18%
Other Postretirement Benefits Plan [Member]
Defined Benefit Plan, Plan Assets, Contributions by Employer		$ 9,000	60,000
Cap On Contribution Toward Future Retiree Medical Coverage		120.00%
Percentage Of Cost To Be Paid By Employees For Retiree Medical Upon Retirement		100.00%
Defined Benefit Plan, Benefit Obligation, Actuarial Gain (Loss)		$ 105,000	$ (58,000)
Weighted Average Discount Rate, Rounded Amount		0.30%	0.72%
Other Postretirement Benefits Plan [Member] | UNITED STATES
Defined Benefit Plan, Plan Assets, Contributions by Employer		$ 0	$ 30,000

Note 13 - Employee Retirement_4

Note 13 - Employee Retirement Plans - Benefit Obligation and Funded Status (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Pension Plan [Member] | UNITED STATES
Benefit obligation at beginning of year	$ 4,203,000	$ 3,856,000
Service cost	102,000	92,000	$ 76,000
Interest cost	78,000	110,000	133,000
Plan participants’ contributions		1,000
Plan amendments		1,000
Actuarial (gain) loss	(107,000)	329,000
Other		8,000
Benefits paid	(201,000)	(194,000)
Benefit obligation at end of year	4,075,000	4,203,000	3,856,000
Balance	3,575,000	3,153,000
Actual gain (loss) on plan assets	208,000	420,000
Defined Benefit Plan, Plan Assets, Contributions by Employer	16,000	195,000
Plan participants’ contributions		1,000
Benefits paid	(201,000)	(194,000)
Balance	3,598,000	3,575,000	3,153,000
Fair value of plan assets	3,598,000	3,575,000	3,153,000
Benefit obligations	4,075,000	4,203,000	3,856,000
Funded status of plans	(477,000)	(628,000)
Current liability	(15,000)	(13,000)
Noncurrent liability	(462,000)	(615,000)
Recognized liability	(477,000)	(628,000)
Net actuarial loss (gain)	272,000	387,000
Prior service cost (credit)	22,000	26,000
Amounts recognized at end of year	294,000	413,000
Pension Plan [Member] | Foreign Plan [Member]
Benefit obligation at beginning of year	778,000	725,000
Service cost	25,000	26,000	25,000
Interest cost	10,000	12,000	15,000
Actuarial (gain) loss	(17,000)	29,000
Other	(2,000)	(37,000)
Benefits paid	(26,000)	(19,000)
Foreign currency translation	(32,000)	42,000
Benefit obligation at end of year	736,000	778,000	725,000
Balance	598,000	518,000
Actual gain (loss) on plan assets	(2,000)	49,000
Defined Benefit Plan, Plan Assets, Contributions by Employer	31,000	50,000
Benefits paid	(26,000)	(44,000)
Foreign currency translation	(17,000)	25,000
Balance	584,000	598,000	518,000
Fair value of plan assets	584,000	598,000	518,000
Benefit obligations	736,000	778,000	725,000
Funded status of plans	(152,000)	(180,000)
Noncurrent asset	100,000	99,000
Current liability	(7,000)	(7,000)
Noncurrent liability	(245,000)	(272,000)
Recognized liability	(152,000)	(180,000)
Net actuarial loss (gain)	(3,000)	7,000
Prior service cost (credit)	1,000	1,000
Amounts recognized at end of year	(2,000)	8,000
Other Postretirement Benefits Plan [Member]
Benefit obligation at beginning of year	764,000	705,000
Service cost	10,000	9,000	9,000
Interest cost	15,000	20,000	27,000
Plan participants’ contributions	7,000	8,000
Actuarial (gain) loss	(105,000)	58,000
Other		2,000
Benefits paid	(37,000)	(38,000)
Benefit obligation at end of year	654,000	764,000	705,000
Balance	30,000
Defined Benefit Plan, Plan Assets, Contributions by Employer	9,000	60,000
Plan participants’ contributions	7,000	8,000
Benefits paid	(37,000)	(38,000)
Balance	9,000	30,000
Fair value of plan assets	9,000	30,000
Benefit obligations	654,000	764,000	$ 705,000
Funded status of plans	(645,000)	(734,000)
Current liability	(23,000)	(7,000)
Noncurrent liability	(622,000)	(727,000)
Recognized liability	(645,000)	(734,000)
Net actuarial loss (gain)	(22,000)	86,000
Prior service cost (credit)	(20,000)	(26,000)
Amounts recognized at end of year	(42,000)	60,000
Other Postretirement Benefits Plan [Member] | UNITED STATES
Defined Benefit Plan, Plan Assets, Contributions by Employer	$ 0	$ 30,000

Note 13 - Employee Retirement_5

Note 13 - Employee Retirement Plans - Benefit Obligations in Excess of Fair Value of Plan Assets (Details) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
Projected benefit obligation	$ 4,358	$ 4,665
Fair value of plan assets	3,627	3,758
Accumulated benefit obligation	4,110	4,247
Fair value of plan assets	$ 3,627	$ 3,603

Note 13 - Employee Retirement_6

Note 13 - Employee Retirement Plans - Net Periodic Benefit Expense (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Pension Plan [Member] | UNITED STATES
Service cost	$ 102	$ 92	$ 76
Interest cost	78	110	133
Expected return on plan assets	(209)	(186)	(161)
Amortization of prior service cost (credit)	4	6	7
Recognition of actuarial loss	10	12	66
Total net periodic benefit (income) expense	(15)	34	121
Special termination benefit charge		8	6
Total (income) expense	(15)	42	127
Current year actuarial (gain) loss	(105)	94	47
Recognition of actuarial loss	(10)	(12)	(66)
Current year prior service cost		1
Amortization of prior service (cost) credit	(4)	(6)	(7)
Total recognized in other comprehensive (loss) income	(119)	77	(26)
Pension Plan [Member] | Foreign Plan [Member]
Service cost	25	26	25
Interest cost	10	12	15
Expected return on plan assets	(7)	(9)	(10)
Amortization of prior service cost (credit)	(1)	(1)	(1)
Recognition of actuarial loss	1	10	24
Total net periodic benefit (income) expense	28	38	53
Total (income) expense	28	38	53
Curtailment effects		(4)
Current year actuarial (gain) loss	(7)	(11)	41
Recognition of actuarial loss	(1)	(10)	(24)
Amortization of prior service (cost) credit	1	1	1
Total recognized in other comprehensive (loss) income	(7)	(24)	18
Other Postretirement Benefits Plan [Member]
Service cost	10	9	9
Interest cost	15	20	27
Amortization of prior service cost (credit)	(6)	(5)	(7)
Amortization of actuarial loss (gain)	2	1	(1)
Total net periodic benefit (income) expense	21	25	28
Special termination benefit charge		1	1
Total (income) expense	21	26	29
Current year actuarial (gain) loss	(105)	58	6
Amortization of actuarial (loss) gain	(2)	(1)	1
Current year prior service cost			5
Amortization of prior service (cost) credit	6	5	7
Total recognized in other comprehensive (loss) income	$ (101)	$ 62	$ 19

Note 13 - Employee Retirement_7

Note 13 - Employee Retirement Plans - Weighted-average Assumptions Used to Determine Benefit Obligations and Net Periodic Benefit Cost (Details)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Pension Plan [Member] | UNITED STATES
Discount rate	2.87%	2.50%	3.28%
Rate of compensation increase	3.50%	4.16%	3.50%
Cash balance crediting rate	3.86%	3.84%	3.94%
Employee contributions crediting rate	1.57%	0.62%	2.03%
Discount rate	2.50%	3.28%	4.28%
Expected return on plan assets	6.00%	6.00%	6.00%
Rate of compensation increase	4.16%	3.50%	3.50%
Cash balance crediting rate	3.84%	3.94%	3.94%
Employee contributions crediting rate	0.62%	2.03%	3.47%
Pension Plan [Member] | Foreign Plan [Member]
Discount rate	1.20%	1.02%	1.34%
Rate of compensation increase	3.63%	3.55%	2.96%
Cash balance crediting rate	0.91%	0.94%	0.97%
Discount rate	1.02%	1.34%	1.96%
Expected return on plan assets	1.26%	1.71%	2.01%
Rate of compensation increase	3.55%	2.96%	2.96%
Cash balance crediting rate	0.94%	0.97%	0.97%
Other Postretirement Benefits Plan [Member]
Discount rate	2.99%	2.69%	3.41%
Discount rate	2.69%	3.41%	4.33%

Note 13 - Employee Retirement_8

Note 13 - Employee Retirement Plans - Assumed Health Care Trend Rates (Details)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Health care cost trend rate assumed for next year	6.25%	6.50%
Rate that the cost trend rate gradually declines to	5.00%	5.00%
Year that the rate reaches the ultimate trend rate	2027	2027

Note 13 - Employee Retirement_9

Note 13 - Employee Retirement Plans - Domestic Defined Benefit Plan Assets (Details) - UNITED STATES - Pension Plan and Other Postretirement Benefits Plan [Member] - USD ($) $ in Millions		Dec. 31, 2021	Dec. 31, 2020
Fair value of plan assets		$ 3,607	$ 3,605
Fair Value, Inputs, Level 1 [Member]
Fair value of plan assets		584	231
Fair Value, Inputs, Level 2 [Member]
Fair value of plan assets		2,972	3,183
Fair Value, Inputs, Level 3 [Member]
Fair value of plan assets		51	191
Defined Benefit Plan, Equity Securities, US [Member]
Fair value of plan assets		977	781
Defined Benefit Plan, Equity Securities, US [Member] | Fair Value, Inputs, Level 1 [Member]
Fair value of plan assets		20	1
Defined Benefit Plan, Equity Securities, US [Member] | Fair Value, Inputs, Level 2 [Member]
Fair value of plan assets		957	780
Defined Benefit Plan, Equity Securities, Non-US [Member]
Fair value of plan assets		234	441
Defined Benefit Plan, Equity Securities, Non-US [Member] | Fair Value, Inputs, Level 2 [Member]
Fair value of plan assets		234	441
US Treasury Securities [Member]
Fair value of plan assets		256	147
US Treasury Securities [Member] | Fair Value, Inputs, Level 1 [Member]
Fair value of plan assets		256	147
Debt Security, Corporate, US [Member]
Fair value of plan assets		1,770	1,951
Debt Security, Corporate, US [Member] | Fair Value, Inputs, Level 2 [Member]
Fair value of plan assets		1,770	1,951
Preferred Stock [Member]
Fair value of plan assets		11	11
Preferred Stock [Member] | Fair Value, Inputs, Level 2 [Member]
Fair value of plan assets		11	11
Private Equity Funds [Member]
Fair value of plan assets	[1]	41	51
Private Equity Funds [Member] | Fair Value, Inputs, Level 3 [Member]
Fair value of plan assets	[1]	41	51
Defined Benefit Plan, Real Estate [Member]
Fair value of plan assets	[2]	10	140
Defined Benefit Plan, Real Estate [Member] | Fair Value, Inputs, Level 3 [Member]
Fair value of plan assets	[2]	10	140
Defined Benefit Plan, Cash and Cash Equivalents [Member]
Fair value of plan assets		308	83
Defined Benefit Plan, Cash and Cash Equivalents [Member] | Fair Value, Inputs, Level 1 [Member]
Fair value of plan assets		$ 308	$ 83
[1]	This category includes venture capital, leverage buyouts and distressed debt limited partnerships invested primarily in U.S. companies. The inputs are valuedby 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 13 - Employee Retiremen_10

Note 13 - Employee Retirement Plans - International Defined Benefit Plan Assets (Details) - Pension Plan [Member] - Foreign Plan [Member] - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Fair value of plan assets	$ 584	$ 598	$ 518
Fair Value, Inputs, Level 1 [Member]
Fair value of plan assets	476	482
Fair Value, Inputs, Level 2 [Member]
Fair value of plan assets	84	93
Fair Value, Inputs, Level 3 [Member]
Fair value of plan assets	24	23
Debt Security, Corporate, Non-US [Member]
Fair value of plan assets	500	519
Debt Security, Corporate, Non-US [Member] | Fair Value, Inputs, Level 1 [Member]
Fair value of plan assets	416	426
Debt Security, Corporate, Non-US [Member] | Fair Value, Inputs, Level 2 [Member]
Fair value of plan assets	84	93
Insurance Contracts [Member]
Fair value of plan assets	2	3
Insurance Contracts [Member] | Fair Value, Inputs, Level 3 [Member]
Fair value of plan assets	2	3	2
Collateralized Mortgage Backed Securities [Member]
Fair value of plan assets	22	20
Collateralized Mortgage Backed Securities [Member] | Fair Value, Inputs, Level 3 [Member]
Fair value of plan assets	22	20	$ 21
Defined Benefit Plan, Cash and Cash Equivalents [Member]
Fair value of plan assets	60	56
Defined Benefit Plan, Cash and Cash Equivalents [Member] | Fair Value, Inputs, Level 1 [Member]
Fair value of plan assets	$ 60	$ 56

Note 13 - Employee Retiremen_11

Note 13 - Employee Retirement Plans - Changes in Fair Value of Level 3 Assets for Defined Benefit Plan (Details) - Pension Plan [Member] - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
UNITED STATES
Balance	$ 3,575	$ 3,153
Balance	3,598	3,575
Foreign Plan [Member]
Balance	598	518
Balance	584	598
Foreign Plan [Member] | Collateralized Mortgage Backed Securities [Member]
Balance	20
Balance	22	20
Foreign Plan [Member] | Insurance Contracts [Member]
Balance	3
Balance	2	3
Fair Value, Inputs, Level 3 [Member] | UNITED STATES | Private Equity Funds [Member]
Balance	51	64
Actual return on plan assets relating to assets still held at the reporting date	21	4
Asset (sales) purchases	(31)	(17)
Balance	41	51
Fair Value, Inputs, Level 3 [Member] | UNITED STATES | Defined Benefit Plan, Real Estate [Member]
Balance	140	145
Actual return on plan assets relating to assets still held at the reporting date	1
Asset (sales) purchases	(135)	(5)
Actual return on plan assets relating to assets sold during the reporting period	4
Balance	10	140
Fair Value, Inputs, Level 3 [Member] | Foreign Plan [Member]
Balance	23
Balance	24	23
Fair Value, Inputs, Level 3 [Member] | Foreign Plan [Member] | Collateralized Mortgage Backed Securities [Member]
Balance	20	21
Actual return on plan assets relating to assets still held at the reporting date	2
Asset (sales) purchases		(1)
Balance	22	20
Fair Value, Inputs, Level 3 [Member] | Foreign Plan [Member] | Insurance Contracts [Member]
Balance	3	2
Asset (sales) purchases	(1)	1
Balance	$ 2	$ 3

Note 13 - Employee Retiremen_12

Note 13 - Employee Retirement Plans - Estimated Future Benefit Payments and Gross Medicare to be Receive (Details) $ in Millions	Dec. 31, 2021USD ($)
Pension Plan [Member] | UNITED STATES
2022	$ 232
2023	233
2024	242
2025	251
2026	254
2027-2031	1,333
Pension Plan [Member] | Foreign Plan [Member]
2022	28
2023	34
2024	33
2025	36
2026	40
2027-2031	221
Other Postretirement Benefits Plan [Member]
2022	33
2023	33
2024	33
2025	33
2026	33
2027-2031	$ 166

Note 14 - Commitments, Contin_3

Note 14 - Commitments, Contingencies and Guarantees (Details Textual) $ in Millions	May 31, 2016USD ($)	Dec. 31, 2021USD ($)	Dec. 31, 2020USD ($)	Dec. 31, 2016	Jun. 01, 2016
Environmental Litigation [Member]
Number of Hazardous Waste Sites [Member]		15
Accrual for Environmental Loss Contingencies, Ending Balance		$ 55	$ 68
Dow Corning Corporation [Member]
Equity Method Investment, Ownership Percentage				50.00%
Dow Corning Corporation [Member] | Dow Corning Chapter 11 Related Matters [Member]
Equity Method Investment, Ownership Percentage					50.00%
Indemnification of Excess Liability	50.00%
Dow Corning Corporation [Member] | Dow Corning Breast Implant Litigation [Member]
Indemnification of Excess Liability		50.00%
Litigation Settlement, Expense		$ 1,800
Loss Contingency Accrual, Ending Balance	$ 290	$ 130
Dow Corning Corporation [Member] | Dow Corning Bankruptcy Pendency Interest Claims [Member]
Loss Contingency Accrual, Ending Balance	$ 107
Dow Corning Corporation [Member] | Dow Corning Environmental Claims [Member]
Indemnification of Excess Liability		50.00%
Uncertain Tax Positions [Member]
Liability for Uncertainty in Income Taxes, Noncurrent		$ 80
Financial Standby Letter of Credit [Member]
Guarantor Obligations, Current Carrying Value		$ 108
Financial Standby Letter of Credit [Member] | Other Current Liabilities [Member]
Guarantor Obligations, Current Carrying Value			$ 39

Note 14 - Commitments, Contin_4

Note 14 - Commitments, Contingencies and Guarantees - Amounts of Obligations (Details) $ in Millions	Dec. 31, 2021USD ($)
Guarantee obligations	$ 284
Contractual obligation payments due	18,078
Total commitments and contingencies	18,362
Financial Standby Letter of Credit [Member]
Guarantee obligations	69	[1]
Less Than 1 Year [Member]
Guarantee obligations	84
Contractual obligation payments due	1,053
Total commitments and contingencies	1,137
Less Than 1 Year [Member] | Financial Standby Letter of Credit [Member]
Guarantee obligations	43	[1]
One To Three Years [Member]
Guarantee obligations	94
Contractual obligation payments due	1,448
Total commitments and contingencies	1,542
One To Three Years [Member] | Financial Standby Letter of Credit [Member]
Guarantee obligations	17	[1]
Three To Five Years [Member]
Guarantee obligations	3
Contractual obligation payments due	1,085
Total commitments and contingencies	1,088
Five Years and Thereafter [Member]
Guarantee obligations	103
Contractual obligation payments due	14,492
Total commitments and contingencies	14,595
Five Years and Thereafter [Member] | Financial Standby Letter of Credit [Member]
Guarantee obligations	9	[1]
Performance Bonds and Guarantees [Member]
Guarantee obligations	215
Performance Bonds and Guarantees [Member] | Less Than 1 Year [Member]
Guarantee obligations	41
Performance Bonds and Guarantees [Member] | One To Three Years [Member]
Guarantee obligations	77
Performance Bonds and Guarantees [Member] | Three To Five Years [Member]
Guarantee obligations	3
Performance Bonds and Guarantees [Member] | Five Years and Thereafter [Member]
Guarantee obligations	94
Purchase Obligations [Member]
Contractual obligation payments due	994	[2]
Purchase Obligations [Member] | Less Than 1 Year [Member]
Contractual obligation payments due	232	[2]
Purchase Obligations [Member] | One To Three Years [Member]
Contractual obligation payments due	219	[2]
Purchase Obligations [Member] | Three To Five Years [Member]
Contractual obligation payments due	111	[2]
Purchase Obligations [Member] | Five Years and Thereafter [Member]
Contractual obligation payments due	432	[2]
Capital Expenditure Obligations [Member]
Contractual obligation payments due	357	[3]
Capital Expenditure Obligations [Member] | Less Than 1 Year [Member]
Contractual obligation payments due	357	[3]
Total Debt [Member]
Contractual obligation payments due	6,315	[4]
Total Debt [Member] | One To Three Years [Member]
Contractual obligation payments due	227	[4]
Total Debt [Member] | Three To Five Years [Member]
Contractual obligation payments due	87	[4]
Total Debt [Member] | Five Years and Thereafter [Member]
Contractual obligation payments due	6,001	[4]
Finance Leases and Financing Obligations [Member]
Contractual obligation payments due	729
Finance Leases and Financing Obligations [Member] | Less Than 1 Year [Member]
Contractual obligation payments due	55
Finance Leases and Financing Obligations [Member] | One To Three Years [Member]
Contractual obligation payments due	207
Finance Leases and Financing Obligations [Member] | Three To Five Years [Member]
Contractual obligation payments due	115
Finance Leases and Financing Obligations [Member] | Five Years and Thereafter [Member]
Contractual obligation payments due	352
Interest on Long-term Debt [Member]
Contractual obligation payments due	8,306	[5]
Interest on Long-term Debt [Member] | Less Than 1 Year [Member]
Contractual obligation payments due	265	[5]
Interest on Long-term Debt [Member] | One To Three Years [Member]
Contractual obligation payments due	523	[5]
Interest on Long-term Debt [Member] | Three To Five Years [Member]
Contractual obligation payments due	519	[5]
Interest on Long-term Debt [Member] | Five Years and Thereafter [Member]
Contractual obligation payments due	6,999	[5]
Imputed Interest on Capital Leases [Member]
Contractual obligation payments due	271
Imputed Interest on Capital Leases [Member] | Less Than 1 Year [Member]
Contractual obligation payments due	32
Imputed Interest on Capital Leases [Member] | One To Three Years [Member]
Contractual obligation payments due	53
Imputed Interest on Capital Leases [Member] | Three To Five Years [Member]
Contractual obligation payments due	39
Imputed Interest on Capital Leases [Member] | Five Years and Thereafter [Member]
Contractual obligation payments due	147
Minimum Rental Commitments [Member]
Contractual obligation payments due	1,026
Minimum Rental Commitments [Member] | Less Than 1 Year [Member]
Contractual obligation payments due	103
Minimum Rental Commitments [Member] | One To Three Years [Member]
Contractual obligation payments due	207
Minimum Rental Commitments [Member] | Three To Five Years [Member]
Contractual obligation payments due	163
Minimum Rental Commitments [Member] | Five Years and Thereafter [Member]
Contractual obligation payments due	553
Uncertain Tax Positions [Member]
Contractual obligation payments due	80	[6]
Uncertain Tax Positions [Member] | Less Than 1 Year [Member]
Contractual obligation payments due	9	[6]
Uncertain Tax Positions [Member] | One To Three Years [Member]
Contractual obligation payments due	12	[6]
Uncertain Tax Positions [Member] | Three To Five Years [Member]
Contractual obligation payments due	51	[6]
Uncertain Tax Positions [Member] | Five Years and Thereafter [Member]
Contractual obligation payments due	$ 8	[6]
[1]	At December 31, 2021, the Company had stand-by letters of credit commitments of $108 million; $39 million was included in other accrued liabilities on the consolidated balance sheets.
[2]	Purchase obligations are enforceable and legally binding obligations which primarily consist of raw material and energy-related take-or-pay contracts.
[3]	Capital expenditure obligations primarily reflect amounts associated with capital expansion activities.
[4]	Debentures are stated at maturity value and excludes interest rate swap gains or losses and bond discounts.
[5]	The estimate of interest payments assumes interest is paid through the date of maturity or expiration of the related debt, based upon stated rates in there spective debt instruments.
[6]	At December 31, 2021, $80 million was included on the consolidated balance sheets related to uncertain tax positions.

Note 15 - Hedging Activities (D

Note 15 - Hedging Activities (Details Textual) $ in Millions	12 Months Ended
	Dec. 31, 2021USD ($)ozt	Dec. 31, 2020USD ($)
Derivative, Notional Amount	$ 13,543	$ 14,740
Foreign Currency Cash Flow Hedge Gain (Loss) to be Reclassified During Next 12 Months	47
AOCI, Cash Flow Hedge, Cumulative Gain (Loss), after Tax	52	60
Other Comprehensive Income (Loss), Cash Flow Hedge, Reclassification for Discontinuance, before Tax		14
New Investment Hedges [Member] | Cash Flow Hedging [Member]
Derivative, Notional Amount	780	1,100
Leased Precious Metal Pools [Member] | Property and Equipment, Net [Member]
Derivative Instruments in Hedges, Assets, at Fair Value, Total	107
Foreign Exchange Forward [Member] | Cash Flow Hedging [Member] | Designated as Hedging Instrument [Member]
Derivative, Notional Amount	$ 780	892
Foreign Exchange Forward [Member] | Net Investment Hedging [Member] | Designated as Hedging Instrument [Member]
Derivative, Notional Amount		$ 251
Lease Precious Metals [Member] | Cash Flow Hedging [Member] | Designated as Hedging Instrument [Member]
Derivative, Nonmonetary Notional Amount, Mass (Troy Ounce) | ozt	7,559

Note 15 - Hedging Activities -

Note 15 - Hedging Activities - Undesignated Hedges (Details) - USD ($) $ in Millions		Dec. 31, 2021	Dec. 31, 2020
Gross notional value for translated earning contracts		$ 13,543	$ 14,740
Not Designated as Hedging Instrument [Member]
Gross notional value for translated earning contracts		8,900	7,500
Average Rate Forward Contracts, Japanese Yen-denominated [Member] | Not Designated as Hedging Instrument [Member]
Gross notional value for translated earning contracts		2,900	4,500
Average Rate Forward Contracts, South Korean Won-denominated [Member] | Not Designated as Hedging Instrument [Member]
Gross notional value for translated earning contracts		1,200	400
Average Rate Forward Contracts, Euro-denominated [Member] | Not Designated as Hedging Instrument [Member]
Gross notional value for translated earning contracts		200	500
Average Rate Forward Contracts, Other Foreign Currencies [Member] | Not Designated as Hedging Instrument [Member]
Gross notional value for translated earning contracts	[1]	100	100
Options Contracts, Japanese Yen-denominated [Member] | Not Designated as Hedging Instrument [Member]
Gross notional value for translated earning contracts	[2]	3,600	$ 2,000
Options Contracts, Other Foreign Currencies [Member] | Not Designated as Hedging Instrument [Member]
Gross notional value for translated earning contracts	[3]	$ 900
[1]	Denominational currencies for average rate forward contracts include the Chinese yuan and British pound.
[2]	Japanese yen-denominated option contracts include zero-cost collars, purchased call options and put options. With respect to the zero-cost collars, the gross notional amount includes the value of both the put and call options. However, due to the nature of the zero-cost collars, only the put or the call option can be exercised at maturity.
[3]	Other foreign currencies option contracts are purchased basket options that include a basket of underlying currencies, including the Japanese yen, South Korean won, Chinese yuan, euro and British pound, and each basket option will be settled against USD.

Note 15 - Hedging Activities _2

Note 15 - Hedging Activities - Summary of Notional Amounts and Respective Fair Values of Derivative Financial Instruments (Details) - USD ($) $ in Millions		Dec. 31, 2021	Dec. 31, 2020
Notional amount		$ 13,543	$ 14,740
Asset derivatives, fair value		500	271
Liability derivatives, fair value		(193)	(344)
Not Designated as Hedging Instrument [Member]
Notional amount		8,900	7,500
Foreign Exchange Contract [Member] | Designated as Hedging Instrument [Member]
Notional amount	[1]	780	1,143
Foreign Exchange Contract [Member] | Designated as Hedging Instrument [Member] | Other Current Assets [Member]
Asset derivatives, fair value	[1]	49	37
Foreign Exchange Contract [Member] | Designated as Hedging Instrument [Member] | Other Accrued Liabilities [Member]
Liability derivatives, fair value	[1]	(2)	(3)
Foreign Exchange Contract [Member] | Designated as Hedging Instrument [Member] | Other Assets [Member]
Asset derivatives, fair value		10	21
Foreign Exchange Contract [Member] | Designated as Hedging Instrument [Member] | Other Liabilities [Member]
Liability derivatives, fair value		(9)	(1)
Foreign Exchange Contract [Member] | Not Designated as Hedging Instrument [Member]
Notional amount		3,864	6,144
Foreign Exchange Contract [Member] | Not Designated as Hedging Instrument [Member] | Other Current Assets [Member]
Asset derivatives, fair value		91	45
Foreign Exchange Contract [Member] | Not Designated as Hedging Instrument [Member] | Other Accrued Liabilities [Member]
Liability derivatives, fair value		(95)	(76)
Foreign Exchange Contract [Member] | Not Designated as Hedging Instrument [Member] | Other Assets [Member]
Asset derivatives, fair value			41
Foreign Exchange Contract [Member] | Not Designated as Hedging Instrument [Member] | Other Liabilities [Member]
Liability derivatives, fair value			(59)
Translated Earnings Contracts [Member] | Designated as Hedging Instrument [Member] | Other Assets [Member]
Asset derivatives, fair value		154	61
Translated Earnings Contracts [Member] | Designated as Hedging Instrument [Member] | Other Liabilities [Member]
Liability derivatives, fair value		(40)	(95)
Translated Earnings Contracts [Member] | Not Designated as Hedging Instrument [Member]
Notional amount		8,899	7,453
Translated Earnings Contracts [Member] | Not Designated as Hedging Instrument [Member] | Other Current Assets [Member]
Asset derivatives, fair value		196	66
Translated Earnings Contracts [Member] | Not Designated as Hedging Instrument [Member] | Other Accrued Liabilities [Member]
Liability derivatives, fair value		$ (47)	$ (110)
[1]	At December 31, 2021, derivatives designated as hedging instruments include foreign exchange cash flow hedges with gross notional amounts of $780 million and fair value hedges of leased precious metals with a gross notional amount of 7,559 troy ounces. At December 31, 2020, derivatives designated as hedging instruments include foreign currency contracts with notional amounts of $892 million and $251 million, respectively, for cash flow hedges and net investment hedges.

Note 15 - Hedging Activities _3

Note 15 - Hedging Activities - Summary of Effect of Designated Derivative Financial Instruments on Consolidated Financial Statements (Details) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Net sales		$ 14,082	$ 11,303	$ 11,503
Cost of sales		9,019	7,772	7,468
Gain (loss) recognized in other comprehensive income		47	(19)	72
Other expense, net		185	(60)	(155)
Net income attributable to Corning Incorporated		1,906	512	960
Foreign Exchange Contract [Member]
Gain (loss) recognized in other comprehensive income		47	(19)	72
Reclassification out of Accumulated Other Comprehensive Income [Member]
Net sales		14	(6)
Cost of sales		39	13	11
Other expense, net	[1]		(14)
Net income attributable to Corning Incorporated		$ 53	$ (7)	$ 11
[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 15 - Hedging Activities _4

Note 15 - Hedging Activities - 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, 2021	Dec. 31, 2020	Dec. 31, 2019
Gain (loss) recognized in income		$ 392	$ (131)	$ 269
Foreign Exchange Contract [Member] | Other (Expense) Income, Net [Member]
Gain (loss) recognized in income	[1]	38	(93)	21
Translated Earnings Contracts [Member] | Translated Earnings Contract (Loss) Gain, Net [Member]
Gain (loss) recognized in income		$ 354	$ (38)	$ 248
[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 16 - Fair Value Measurem_3

Note 16 - Fair Value Measurements - Financial Assets and Liabilities Measured on a Recurring Basis (Details) - USD ($) $ in Millions		Dec. 31, 2021	Dec. 31, 2020
Other current assets (1)(2)	[1],[2]	$ 352	$ 152
Investments (3)	[3]		137
Other assets (1)	[1]	175	139
Other accrued liabilities (1)	[1]	144	189
Other liabilities (1)(4)	[1],[4]	66	155
Fair Value, Inputs, Level 1 [Member]
Other current assets (1)(2)	[1],[2]	10
Investments (3)	[3]		137
Fair Value, Inputs, Level 2 [Member]
Other current assets (1)(2)	[1],[2]	336	148
Other assets (1)	[1]	164	123
Other accrued liabilities (1)	[1]	144	189
Other liabilities (1)(4)	[1],[4]	66	155
Fair Value, Inputs, Level 3 [Member]
Other current assets (1)(2)	[1],[2]	6	4
Other assets (1)	[1]	$ 11	$ 16
[1]	Derivative assets and liabilities include foreign exchange contracts which are measured using observable inputs for similar assets and liabilities.
[2]	Equity securities with readily available fair values that were measured using Level 1 inputs were reclassified from investments to other current assets and subsequently sold for $84 million during the year ended December 31, 2021.
[3]	Included in investments as of December 31, 2020 were equity securities with readily available fair values that were measured using Level 1 inputs. A pre-tax gain of $107 million was recorded from the initial public offering of an investment for the year ended December 31, 2020.
[4]	Other liabilities as of December 31, 2021 include a $17 million put option pursuant to the Share Repurchase Agreement with SDC, which was measured using significant other observable (Level 2) inputs. Refer to Note 17 (Shareholders' Equity) to the consolidated financial statements for additional information

Note 17 - Shareholders' Equit_2

Note 17 - Shareholders' Equity (Details Textual) - USD ($) $ / shares in Units, $ in Millions		Apr. 08, 2023	Apr. 08, 2022	Feb. 02, 2022	Apr. 08, 2021	Feb. 03, 2021	Feb. 05, 2020	Feb. 04, 2020	Jul. 17, 2019	Mar. 31, 2019	Apr. 08, 2022	Dec. 31, 2021		Dec. 31, 2020		Dec. 31, 2019		Apr. 08, 2023	Jan. 16, 2021	Apr. 26, 2018
Increase (Decrease) in Percentage of Quarterly Common Stock Dividend						9.00%	10.00%
Common Stock, Dividends, Per Share, Declared (in dollars per share)						$ 0.24	$ 0.22	$ 0.20				$ 0.96		$ 0.88		$ 0.80
Payments for Repurchase of Common Stock												$ 274		$ 105		$ 940
Preferred Stock Redemption Premium	[1]											803
Other Comprehensive Income (Loss), Tax, Total												4		22		(8)
Income Tax Expense (Benefit), Total												491		111		256
Accumulated Foreign Currency Adjustment Attributable to Parent [Member]
Other Comprehensive Income (Loss), Tax, Total												44		55		(7)
Accumulated Net Gain (Loss) from Cash Flow Hedges Attributable to Parent [Member]
Other Comprehensive Income (Loss), Tax, Total												3		5		(18)
Accumulated Net Gain (Loss) from Cash Flow Hedges Attributable to Parent [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member]
Income Tax Expense (Benefit), Total	[2]											(1)		2		(2)
Accumulated Defined Benefit Plans Adjustment Attributable to Parent [Member]
Other Comprehensive Income (Loss), Tax, Total												51		28		19
Accumulated Defined Benefit Plans Adjustment Attributable to Parent [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member]
Income Tax Expense (Benefit), Total										$ 52			[2],[3]	$ 5	[2],[3]	$ 73	[2],[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					$ 507
Stock Repurchased and Retired During Period, Value					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					5.00%
Liabilities for Freestanding Written Put Option												17
Number of Shares Held by Counter Party subject to Seven Year Lock-up Period (in shares)					58,000,000
Share Repurchase Agreement [Member] | Samsung [Member] | Forecast [Member]
Payments for Repurchase of Common Stock											$ 507							$ 1,500
The 2019 Repurchase Program [Member]
Payments for Repurchase of Common Stock												$ 274
Treasury Stock, Shares, Acquired (in shares)												7,300,000
The 2018 and 2019 Repurchase Programs [Member] | Samsung [Member]
Payments for Repurchase of Common Stock					$ 507
Treasury Stock, Shares, Acquired (in shares)					35,000,000
The 2018 and 2019 Repurchase Programs [Member] | Samsung [Member] | Forecast [Member]
Payments for Repurchase of Common Stock		$ 507	$ 507															$ 1,500
The 2018 Repurchase Program [Member]
Treasury Stock, Shares, Acquired (in shares)									5,000,000,000					4,100,000		31,000,000
Treasury Stock, Value, Acquired, Cost Method														$ 105		$ 925
Stock Repurchase Program, Authorized Amount																				$ 2,000
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]
Increase (Decrease) in Percentage of Quarterly Common Stock Dividend				13.00%
Common Stock, Dividends, Per Share, Declared (in dollars per share)				$ 0.27
[1]	Refer to Note 17 (Shareholders' Equity) and Note 18 (Earnings per Common Share) to the consolidated financial statements for additional information.
[2]	Amounts in parentheses indicate debits to the statement of income.
[3]	Includes $52 million that was recognized during the first quarter of 2019 due to adoption of the new standard related to Income Statement - Reporting Comprehensive Income, which allows for reclassification from accumulated other comprehensive loss to retained earnings for stranded tax effects.

Note 17 - Shareholders' Equit_3

Note 17 - Shareholders' Equity - Changes in Capital Stock (Details) - USD ($) shares in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Balance (in shares)	1,700
Balance	$ 863
Treasury stock (in shares)	(961)
Balance	$ 19,928
Shares issued to benefit plans and for option exercises	277	$ 323	$ 113
Shares purchased for treasury	(274)	(105)	(925)
Other, net (1)	$ (66)	$ (45)	$ (172)	[1]
Common stock, shares issued (in shares)	1,800	1,700
Treasury stock (in shares)	(970)	(961)
Balance (in shares)	1,800	1,700
Balance	$ 907	$ 863
Treasury stock (in shares)	(970)	(961)
Balance	$ 20,263	$ 19,928
Common Stock [Member]
Balance (in shares)	1,726	1,718	1,713
Balance	$ 863	$ 859	$ 857
Shares issued to benefit plans and for option exercises (in shares)	9	8	5
Shares issued to benefit plans and for option exercises	$ 4	$ 4	$ 2
Common stock, shares issued (in shares)	1,815	1,726	1,718
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)	1,815	1,726	1,718
Balance	$ 907	$ 863	$ 859
Treasury Stock [Member]
Treasury stock (in shares)	(961)	(956)	(925)
Balance	$ 19,928	$ 19,812	$ 18,870
Shares purchased for treasury (in shares)	(7)	(4)	(31)
Shares purchased for treasury	$ (274)	$ (105)	$ (925)
Other, net (1)	$ (61)	$ (11)	$ (17)	[1]
Other, net (1) (in shares)	(2)	(1)
Treasury stock (in shares)	(970)	(961)	(956)
Treasury stock (in shares)	(970)	(961)	(956)
Balance	$ 20,263	$ 19,928	$ 19,812
[1]	Adjustments to retained earnings include the effect of the accounting changes recorded for the adoption of the new standard for reclassification of stranded tax effects in accumulated other comprehensive loss in the amount of $53 million and the impact of an equity affiliate's adoption of the new revenue standard in January 2019. A net reduction of $186 million net of tax was recorded to beginning retained earnings for performance obligations of which a significant amount settled by the end of 2019.

Note 17 - Shareholders' Equit_4

Note 17 - Shareholders' Equity - Accumulated Other Comprehensive Loss (Details) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2021		Dec. 31, 2020		Dec. 31, 2019
Balance		$ 13,448		$ 12,997		$ 13,886
Other comprehensive (loss) income, net of tax		(435)		431		(161)
Balance		12,545		13,448		12,997
Accumulated Foreign Currency Adjustment Attributable to Parent [Member]
Balance	[1]	(329)		(857)		(714)
Other comprehensive (loss) income before reclassifications	[1]	(582)	[2]	511	[3]	(129)	[4]
Equity method affiliates	[1],[5]	(22)		17		(14)
Other comprehensive (loss) income, net of tax	[1]	(604)		528		(143)
Balance	[1]	(933)		(329)		(857)
Accumulated Defined Benefit Plans Adjustment Attributable to Parent [Member]
Balance	[1]	(450)		(362)		(298)
Other comprehensive (loss) income before reclassifications	[1]	178	[2]	(106)	[3]	(79)	[4]
Amounts reclassified from accumulated other comprehensive income (loss) (5)	[1],[6]			18		15
Other comprehensive (loss) income, net of tax	[1]	178		(88)		(64)
Balance	[1]	(272)		(450)		(362)
AOCI, Accumulated Gain (Loss), Debt Securities, Available-for-sale, Parent [Member]
Balance	[1]	(3)		(3)		(4)
Other comprehensive (loss) income before reclassifications	[1],[4]					1
Other comprehensive (loss) income, net of tax	[1]					1
Balance	[1]	(3)		(3)		(3)
Accumulated Net Gain (Loss) from Cash Flow Hedges Attributable to Parent [Member]
Balance	[1]	42		51		6
Other comprehensive (loss) income before reclassifications	[1]	43	[2]	(14)	[3]	54	[4]
Amounts reclassified from accumulated other comprehensive income (loss) (5)	[1],[6]	(52)		5		(9)
Other comprehensive (loss) income, net of tax	[1]	(9)		(9)		45
Balance	[1]	33		42		51
AOCI Including Portion Attributable to Noncontrolling Interest [Member]
Balance	[1]	(740)		(1,171)		(1,010)
Other comprehensive (loss) income before reclassifications	[1]	(361)	[2]	391	[3]	(153)	[4]
Amounts reclassified from accumulated other comprehensive income (loss) (5)	[1],[6]	(52)		23		6
Equity method affiliates	[1],[5]	(22)		17		(14)
Other comprehensive (loss) income, net of tax	[1]	(435)		431		(161)
Balance	[1]	$ (1,175)		$ (740)		$ (1,171)
[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 expense of $22 million, primarily driven by $55 million related to foreign currency translation adjustments; embedded in this number are positive impacts of $5 million related to the hedging component and $28 million related to retirement plans.
[4]	Amounts are net of total tax benefit of $8 million, primarily driven by $7 million related to foreign currency translation adjustments; embedded in this number is the negative impact of $18 million related to the hedging component, offset by the positive impact of $19 million related to retirement plans.
[5]	Tax effects related to equity method affiliates are not significant in the reported periods.
[6]	Tax effect of reclassifications are disclosed separately within this footnote.

Note 17 - Shareholders' Equit_5

Note 17 - Shareholders' Equity - Reclassifications Out of Accumulated Other Comprehensive Income by Component (Details) - USD ($) $ in Millions		3 Months Ended	12 Months Ended
		Mar. 31, 2019	Dec. 31, 2021		Dec. 31, 2020		Dec. 31, 2019
Income tax (provision) benefit (3)			$ 491		$ 111		$ 256
Net sales			14,082		11,303		11,503
Cost of sales			9,019		7,772		7,468
Other expense, net			185		(60)		(155)
Reclassification out of Accumulated Other Comprehensive Income [Member]
Net sales			14		(6)
Cost of sales			39		13		11
Other expense, net	[1]				(14)
Accumulated Defined Benefit Plans Adjustment, Net Gain (Loss) Attributable to Parent [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member]
Total reclassifications for the period	[2],[3]		(3)		(23)		(89)
Accumulated Defined Benefit Plans Adjustment, Net Prior Service Attributable to Parent [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member]
Total reclassifications for the period	[2],[3]		3				1
Accumulated Defined Benefit Plans Adjustment Attributable to Parent [Member]
Total reclassifications for the period	[4],[5]				(18)		(15)
Accumulated Defined Benefit Plans Adjustment Attributable to Parent [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member]
Net income (loss)	[2]				(23)		(88)
Income tax (provision) benefit (3)		$ 52		[2],[6]	5	[2],[6]	73	[2],[6]
Total reclassifications for the period	[2]		0		(18)		(15)
Accumulated Net Gain (Loss) from Cash Flow Hedges Attributable to Parent [Member]
Total reclassifications for the period	[4],[5]		52		(5)		9
Accumulated Net Gain (Loss) from Cash Flow Hedges Attributable to Parent [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member]
Net income (loss)	[2]		53		(7)		11
Income tax (provision) benefit (3)	[2]		(1)		2		(2)
Total reclassifications for the period	[2]		52		(5)		9
Net sales	[2]		14		(6)
Cost of sales	[2]		39		13		11
Other expense, net	[2]				(14)
AOCI Attributable to Parent [Member]
Total reclassifications for the period	[2]		$ 52		$ (23)		$ (6)
[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.
[2]	Amounts in parentheses indicate debits to the statement of income.
[3]	These accumulated other comprehensive loss components are included in net periodic pension cost. Refer to Note 13 (Employee Retirement Plans) to the consolidated financial statements for additional details.
[4]	All amounts are after tax. Amounts in parentheses indicate debits to accumulated other comprehensive loss.
[5]	Tax effect of reclassifications are disclosed separately within this footnote.
[6]	Includes $52 million that was recognized during the first quarter of 2019 due to adoption of the new standard related to Income Statement - Reporting Comprehensive Income, which allows for reclassification from accumulated other comprehensive loss to retained earnings for stranded tax effects.

Note 18 - Earnings Per Common_3

Note 18 - Earnings Per Common Share (Details Textual) - USD ($) $ in Millions		Apr. 08, 2021	Dec. 31, 2021		Dec. 31, 2020	Jan. 16, 2021
Stock Redeemed or Called During Period, Value	[1]		$ 1,503
Retained Earnings [Member]
Stock Redeemed or Called During Period, Value		$ 803	$ 803	[1]
Share Repurchase Agreement [Member] | Samsung [Member]
Stock Repurchased and Retired During Period, Shares (in shares)		35,000,000
Series A Convertible Preferred Stock [Member]
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
Conversion of Preferred Stock into Common Stock [Member]
Conversion of Stock, Shares Converted (in shares)					2,300
Conversion of Stock, Shares Issued (in shares)		115,000,000
[1]	Refer to Note 17 (Shareholders' Equity) and Note 18 (Earnings per Common Share) to the consolidated financial statements for additional information.

Note 18 - Earnings Per Common_4

Note 18 - 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, 2021	Dec. 31, 2020	Dec. 31, 2019
Net income		$ 1,906	$ 512	$ 960
Less: Series A convertible preferred stock dividend		24	98	98
Less: Excess consideration paid for redemption of preferred stock	[1]	803
Net income available to common shareholders		1,079	414	862
Plus: Series A convertible preferred stock dividend				98
Net income available to common shareholders - diluted		$ 1,079	$ 414	$ 960
Weighted-average common shares outstanding - basic (in shares)		828	761	776
Stock options and other dilutive securities (in shares)		16	11	8
Series A convertible preferred stock (1) (in shares)	[2]			115
Weighted-average common shares outstanding - diluted (in shares)		844	772	899
Basic (Note 18) (in dollars per share)		$ 1.30	$ 0.54	$ 1.11
Diluted (Note 18) (in dollars per share)		$ 1.28	$ 0.54	$ 1.07
Total (in shares)		31	117	2
Series A Convertible Preferred Stock [Member]
Total (in shares)	[2]	31	115
Share-based Payment Arrangement [Member]
Total (in shares)			2	2
[1]	Refer to Note 17 (Shareholders' Equity) and Note 18 (Earnings per Common Share) to the consolidated financial statements for additional information.
[2]	For the years ended December 31, 2021 and 2020, the Preferred Stock was anti-dilutive and therefore excluded from the calculation of diluted earnings per share.

Note 19 - Share-based Compens_3

Note 19 - Share-based Compensation (Details Textual) - USD ($) $ / shares in Units, shares in Thousands, $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant (in shares)	39,000
Share-based Payment Arrangement, Expense	$ 190	$ 207	$ 56
Proceeds and Excess Tax Benefit from Share-based Compensation	$ 37	12	9
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Number (in shares)	6,573
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross (in shares)	0
Proceeds from Stock Options Exercised	$ 97	124	58
Share-based Payment Arrangement, Option [Member]
Share-based Payment Arrangement, Expense	$ 9	$ 23	$ 13
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period (Year)	10 years
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value (in dollars per share)		$ 3.67	$ 8.78
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested in Period, Fair Value	$ 16	$ 31	$ 10
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount, Total	$ 10
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition (Year)	1 year 3 months 18 days
Share-based Payment Arrangement, Expense, Tax Benefit	$ 15
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Intrinsic Value	$ 100	99	47
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
In-the-money Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Number (in shares)	7,000
Restricted Stock and Restricted Stock Units [Member]
Share-based Payment Arrangement, Expense	$ 94	95	43
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount, Total	$ 117
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition (Year)	2 years 1 month 6 days
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Fair Value	$ 88	38	$ 33
Restricted Stock and Restricted Stock Units [Member] | Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period (Year)	1 year
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period (Year)	1 year
Restricted Stock and Restricted Stock Units [Member] | Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period (Year)	10 years
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period (Year)	10 years
Performance Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period (Year)	3 years
Performance-based Restricted Stock Units [Member]
Share-based Payment Arrangement, Expense	$ 79	$ 81
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount, Total	$ 30
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition (Year)	1 year 4 months 24 days

Note 19 - Share-based Compens_4

Note 19 - Share-based Compensation - Summary of Stock Options Outstanding (Details) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2021USD ($)$ / sharesshares
Beginning Options Outstanding, number of shares (in shares) | shares	17,095
Beginning Options Outstanding, weighted average exercise price (in dollars per share) | $ / shares	$ 21.60
Exercised, number of shares (in shares) | shares	(4,818)
Exercised, weighted average exercise price (in dollars per share) | $ / shares	$ 19.85
Forfeited and Expired, number of shares (in shares) | shares	(373)
Forfeited and Expired, weighted average exercise price (in dollars per share) | $ / shares	$ 21.40
Ending Options Outstanding, number of shares (in shares) | shares	11,904
Ending Options Outstanding, weighted average exercise price (in dollars per share) | $ / shares	$ 22.31
Options Outstanding, weighted average remaining contractual term (Year)	6 years 7 months 2 days
Options Outstanding, aggregate intrinsic value | $	$ 177,634
Options Expected to Vest, number of shares (in shares) | shares	11,830
Options Expected to Vest, weighted average exercise price (in dollars per share) | $ / shares	$ 22.32
Options Expected to Vest, weighted average remaining contractual term (Year)	6 years 6 months 25 days
Options Expected to Vest, aggregate intrinsic value | $	$ 176,328
Options Exercisable, number of shares (in shares) | shares	6,573
Options Exercisable, weighted average exercise price (in dollars per share) | $ / shares	$ 21.19
Options Exercisable, weighted average remaining contractual term (Year)	5 years 5 months 1 day
Options Exercisable, aggregate intrinsic value | $	$ 105,412

Note 19 - Share-based Compens_5

Note 19 - Share-based Compensation - Valuation of Option Grants Under Stock Plans (Details)	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Expected volatility	32.90%
Weighted-average volatility	32.90%
Expected dividends	4.48%
Risk-free rate	0.50%
Average risk-free rate	0.50%
Expected term (in years) (Year)	7 years 4 months 24 days	7 years 4 months 24 days
Pre-vesting executive departure rate	0.60%	0.60%
Pre-vesting non-executive departure rate	2.50%
Minimum [Member]
Expected volatility		29.50%
Weighted-average volatility		29.50%
Expected dividends		2.36%
Risk-free rate		1.50%
Average risk-free rate		1.50%
Maximum [Member]
Expected volatility		29.90%
Weighted-average volatility		29.90%
Expected dividends		2.95%
Risk-free rate		2.40%
Average risk-free rate		2.40%

Note 19 - Share-based Compens_6

Note 19 - 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, 2021$ / sharesshares
Beginning Non-vested shares and share units, number of shares (in shares) | shares	12,943
Beginning Non-vested shares and share units, weighted average grant-date fair value (in dollars per share) | $ / shares	$ 22.87
Granted, number of shares (in shares) | shares	1,890
Granted, weighted average grant-date fair value (in dollars per share) | $ / shares	$ 40.77
Vested, number of shares (in shares) | shares	(3,774)
Vested, weighted average grant-date fair value (in dollars per share) | $ / shares	$ 23.40
Forfeited, number of shares (in shares) | shares	(465)
Forfeited, weighted average grant-date fair value (in dollars per share) | $ / shares	$ 23.74
Ending Non-vested shares and share units, number of shares (in shares) | shares	10,594
Ending Non-vested shares and share units, weighted average grant-date fair value (in dollars per share) | $ / shares	$ 25.83

Note 19 - Share-based Compens_7

Note 19 - Share-based Compensation - Summary of Performance-based Restricted Stock Units (Details) - Performance Shares [Member] shares in Thousands	12 Months Ended
	Dec. 31, 2021$ / sharesshares
Beginning Non-vested shares and share units, number of shares (in shares) | shares	1,765
Beginning Non-vested shares and share units, weighted average grant-date fair value (in dollars per share) | $ / shares	$ 28.06
Granted, number of shares (in shares) | shares	1,222
Granted, weighted average grant-date fair value (in dollars per share) | $ / shares	$ 38.82
Vested, number of shares (in shares) | shares	(119)
Vested, weighted average grant-date fair value (in dollars per share) | $ / shares	$ 28.06
Performance adjustments (in shares) | shares	917
Performance adjustments (in dollars per share) | $ / shares	$ 38.82
Forfeited, number of shares (in shares) | shares	(101)
Forfeited, weighted average grant-date fair value (in dollars per share) | $ / shares	$ 33.25
Ending Non-vested shares and share units, number of shares (in shares) | shares	3,684
Ending Non-vested shares and share units, weighted average grant-date fair value (in dollars per share) | $ / shares	$ 34.17

Note 20 - Reportable Segments_2

Note 20 - Reportable Segments (Details Textual) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Mar. 31, 2020	Dec. 31, 2021	Dec. 31, 2020		Dec. 31, 2019	Sep. 09, 2020
Number of Material Formations		150
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent		21.00%	21.00%		21.00%
Revenue, Cumulative Adjustments	$ (105)		$ 105	[1]
Investment Liabilities Noncurrent						$ 270
[1]	Amount represents the negative impact of a cumulative adjustment to reduce revenue by $105 million recorded during the first quarter of 2020. The adjustment was associated with a previously recorded commercial benefit asset, reflected as a prepayment, to a customer with a long-term supply agreement that substantially exited its production of LCD panels.

Note 20 - Reportable Segments -

Note 20 - Reportable Segments - Reportable Segments (Details) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2021		Dec. 31, 2020		Dec. 31, 2019
Depreciation (1)		$ 1,352		$ 1,399		$ 1,390
Research, development and engineering expenses (2)		995		1,154		1,031
Income tax (provision) benefit (3)		491		111		256
Net income attributable to Corning Incorporated		1,906		512		960
Operating Segments [Member]
Net sales of reportable segments and All Other	[2]	14,120	[1]	11,452	[1]	11,656
Depreciation (1)	[3]	1,315		1,215		1,192
Research, development and engineering expenses (2)	[4]	838		754		867
Income tax (provision) benefit (3)	[5]	(612)		(435)		(451)
Net income attributable to Corning Incorporated	[6]	2,296		1,628		1,701
Investment in affiliated companies, at equity		264		258		291
Segment assets (5)	[7]	18,954		19,022		18,026
Capital expenditures		1,699		928		1,899
Display Products [Member] | Operating Segments [Member]
Net sales of reportable segments and All Other		3,700		3,172		3,254
Depreciation (1)	[3]	605		548		583
Research, development and engineering expenses (2)	[4]	110		99		119
Income tax (provision) benefit (3)	[5]	(249)		(190)		(206)
Net income attributable to Corning Incorporated	[6]	960		717		786
Investment in affiliated companies, at equity		109		107		145
Segment assets (5)	[7]	8,498		8,777		9,022
Capital expenditures		710		311		872
Optical Communications [Member] | Operating Segments [Member]
Net sales of reportable segments and All Other		4,349		3,563		4,064
Depreciation (1)	[3]	224		242		237
Research, development and engineering expenses (2)	[4]	216		204		218
Income tax (provision) benefit (3)	[5]	(152)		(101)		(134)
Net income attributable to Corning Incorporated	[6]	553		366		489
Investment in affiliated companies, at equity		3		3		3
Segment assets (5)	[7]	3,183		2,868		3,004
Capital expenditures		301		127		329
Specialty Materials [Member] | Operating Segments [Member]
Net sales of reportable segments and All Other		2,008		1,884		1,594
Depreciation (1)	[3]	161		162		145
Research, development and engineering expenses (2)	[4]	208		155		154
Income tax (provision) benefit (3)	[5]	(99)		(113)		(81)
Net income attributable to Corning Incorporated	[6]	371		423		302
Investment in affiliated companies, at equity		6		4		3
Segment assets (5)	[7]	2,308		2,551		2,433
Capital expenditures		183		125		176
Environmental Technologies [Member] | Operating Segments [Member]
Net sales of reportable segments and All Other		1,586		1,370		1,499
Depreciation (1)	[3]	139		132		128
Research, development and engineering expenses (2)	[4]	111		100		118
Income tax (provision) benefit (3)	[5]	(72)		(52)		(70)
Net income attributable to Corning Incorporated	[6]	269		197		263
Investment in affiliated companies, at equity
Segment assets (5)	[7]	2,150		1,986		1,912
Capital expenditures		228		159		287
Life Science Products [Member] | Operating Segments [Member]
Net sales of reportable segments and All Other		1,234		998		1,015
Depreciation (1)	[3]	52		50		49
Research, development and engineering expenses (2)	[4]	33		26		21
Income tax (provision) benefit (3)	[5]	(51)		(37)		(40)
Net income attributable to Corning Incorporated	[6]	194		139		150
Investment in affiliated companies, at equity		4		2		3
Segment assets (5)	[7]	791		683		627
Capital expenditures		128		83		80
Other Segments [Member] | Operating Segments [Member]
Net sales of reportable segments and All Other		1,243		465		230
Depreciation (1)	[3]	134		81		50
Research, development and engineering expenses (2)	[4]	160		170		237
Income tax (provision) benefit (3)	[5]	11		58		80
Net income attributable to Corning Incorporated	[6]	(51)		(214)		(289)
Investment in affiliated companies, at equity		142		142		137
Segment assets (5)	[7]	2,024		2,157		1,028
Capital expenditures		$ 149		$ 123		$ 155
[1]	Includes HSG’s net sales and long-lived assets as of December 31, 2021 and 2020. Refer to Note 3 (Investments) and Note 4 (HSG Transactions and Acquisitions) to the consolidated financial statements for more information.
[2]	Net sales are attributed to countries based on location of customer.
[3]	Depreciation expense for Corning’s reportable segments includes an allocation of depreciation of corporate property not specifically identifiable to a segment.
[4]	Research, development and engineering expenses include direct project spending that is identifiable to a segment.
[5]	Incometax (provision) benefit reflects a tax rate of 21%.
[6]	Many of Corning’s administrative and staff functions are performed on a centralized basis. Where practicable, Corning charges these expenses to segments based upon the extent to which each business uses a centralized function. Other staff functions, such as corporate finance, human resources and legal, are allocated to segments, primarily as a percentage of sales. Expenses that are not allocated to the segments are included in the reconciliation of reportable segment net income (loss) to consolidated net income.
[7]	Segment assets include inventory, accounts receivable, property, plant and equipment, net of accumulated depreciation, and associated equity companies. HSGa ssets are included as of December 31, 2020.

Note 20 - Reportable Segments_3

Note 20 - Reportable Segments - Reconciliation of Reportable Segments and All Other Net Sales to Consolidated Net Sales (Details) - USD ($) $ in Millions		3 Months Ended	12 Months Ended
		Mar. 31, 2020	Dec. 31, 2021		Dec. 31, 2020		Dec. 31, 2019
Cumulative adjustment related to customer contract		$ (105)			$ 105	[1]
Net sales			$ 14,082		11,303		$ 11,503
Operating Segments [Member]
Net sales of reportable segments and All Other	[3]		14,120	[2]	11,452	[2]	11,656
Net sales			14,082		11,303		11,503
Segment Reconciling Items [Member]
Impact of foreign currency movements	[4]		(38)		(44)		(153)
Cumulative adjustment related to customer contract	[5]				$ (105)	[6]
[1]	Amount represents the negative impact of a cumulative adjustment to reduce revenue by $105 million recorded during the first quarter of 2020. The adjustment was associated with a previously recorded commercial benefit asset, reflected as a prepayment, to a customer with a long-term supply agreement that substantially exited its production of LCD panels.
[2]	Includes HSG’s net sales and long-lived assets as of December 31, 2021 and 2020. Refer to Note 3 (Investments) and Note 4 (HSG Transactions and Acquisitions) to the consolidated financial statements for more information.
[3]	Net sales are attributed to countries based on location of customer.
[4]	This amount primarily represents the impact of foreign currency adjustments in the Display Technologies, Environmental Technologies and Life Sciences segments.
[5]	Amount represents the negative impact of a cumulative adjustment recorded during the first quarter of 2020 to reduce revenue in the amount of $105 million.The adjustment was associated with a previously recorded commercial benefit asset, reflected as a prepayment, to a customer with a long-term supply agreement that is exiting its production of LCD panels. Refer to Note 5 (Revenue) to the consolidated financial statements for additional information.
[6]	Amount represents the negative impact of a cumulative adjustment to reduce revenue in the amount of $105 million recorded during the first quarter of 2020. The adjustment was associated with a previously recorded commercial benefit asset, reflected as a prepayment, to a customer with a long-term supply agreement that substantially exited its production of LCD panels. Refer to Note 5 (Revenue) to the consolidated financial statements for additional information.

Note 20 - Reportable Segments_4

Note 20 - Reportable Segments - Reconciliation of Reportable Segment Net Income (Loss) to Consolidated Net Income (Details) - USD ($) $ in Millions		3 Months Ended	12 Months Ended
		Mar. 31, 2020	Dec. 31, 2021	Dec. 31, 2020		Dec. 31, 2019
Net income attributable to Corning Incorporated			$ 1,906	$ 512		$ 960
Gain (loss) on foreign currency hedges related to translated earnings			354	(38)		248
Research, development and engineering expenses			995	1,154		1,031
Corning’s equity in earnings (losses) of affiliated companies			35	(25)		17
Amortization of intangibles			(129)	(121)		(113)
Interest expense, net			(300)	(276)		(221)
Income tax benefit			(491)	(111)		(256)
Cumulative adjustment related to customer contract		$ (105)		105	[1]
Severance charges			13	(148)		(63)
Asset impairment				(217)
Operating Segments [Member]
Net income attributable to Corning Incorporated	[2]		2,296	1,628		1,701
Impact of foreign currency movements not included in segment net loss	[3]		(38)	(44)		(153)
Research, development and engineering expenses	[4]		838	754		867
Income tax benefit	[5]		612	435		451
Operating Segments [Member] | Reportable Segments [Member]
Net income attributable to Corning Incorporated			2,347	1,842		1,990
Operating Segments [Member] | Nonreportable Segments [Member]
Net income attributable to Corning Incorporated	[6]		(51)	(214)		(289)
Segment Reconciling Items [Member]
Net income attributable to Corning Incorporated			1,906	512		960
Impact of foreign currency movements not included in segment net loss			(87)	(22)		(115)
Gain (loss) on foreign currency hedges related to translated earnings			354	(46)		245
Translation gain (loss) on Japanese yen-denominated debt			180	(86)		(3)
Litigation, regulatory and other legal matters			(16)	(144)		17
Research, development and engineering expenses	[7],[8]		(149)	(153)		(134)
Transaction-related gain, net (4)	[9]			498
Corning’s equity in earnings (losses) of affiliated companies	[10]		5	(24)		15
Amortization of intangibles			(129)	(121)		(113)
Interest expense, net			(265)	(261)		(200)
Income tax benefit			120	324		195
Pension mark-to-market			(32)	(31)		(95)
Cumulative adjustment related to customer contract	[11]			(105)	[12]
Severance charges	[8]		13	(148)		(63)
Asset impairment	[8]			(217)
Capacity realignment and other charges and credits	[8]		(123)	(462)		(376)
Bond redemption loss (7)	[13]		(31)	(22)
(Loss) gain on investment (8)	[14]		(23)	107
Gain on sale of business			54
Other corporate items			$ (261)	$ (203)		$ (114)
[1]	Amount represents the negative impact of a cumulative adjustment to reduce revenue by $105 million recorded during the first quarter of 2020. The adjustment was associated with a previously recorded commercial benefit asset, reflected as a prepayment, to a customer with a long-term supply agreement that substantially exited its production of LCD panels.
[2]	Many of Corning’s administrative and staff functions are performed on a centralized basis. Where practicable, Corning charges these expenses to segments based upon the extent to which each business uses a centralized function. Other staff functions, such as corporate finance, human resources and legal, are allocated to segments, primarily as a percentage of sales. Expenses that are not allocated to the segments are included in the reconciliation of reportable segment net income (loss) to consolidated net income.
[3]	This amount primarily represents the impact of foreign currency adjustments in the Display Technologies segment.
[4]	Research, development and engineering expenses include direct project spending that is identifiable to a segment.
[5]	Incometax (provision) benefit reflects a tax rate of 21%.
[6]	The Company obtained a controlling interest in HSG during the third quarter of 2020 and has consolidated results in “All Other” since September 9, 2020.
[7]	Amount does not include research, development, and engineering expense related to restructuring, impairment and other charges and credits.
[8]	Refer to Note 2 (Restructuring, Impairment and Other Charges and Credits) to the consolidated financial statements for additional information on restructuring activities and impairment.
[9]	Amount represents the pre-tax gain recorded on Corning’s previously held equity investment in HSG recorded in 2020. Refer to Note 4 (HSG Transactions and Acquisitions) to the consolidated financial statements for additional information on this transaction.
[10]	Primarily represents the equity earnings of HSG prior to September 9, 2020. Refer to Note 3 (Investments) and Note 4 (HSG Transactions and Acquisitions) to the consolidated financial statements for more information.
[11]	Amount represents the negative impact of a cumulative adjustment recorded during the first quarter of 2020 to reduce revenue in the amount of $105 million.The adjustment was associated with a previously recorded commercial benefit asset, reflected as a prepayment, to a customer with a long-term supply agreement that is exiting its production of LCD panels. Refer to Note 5 (Revenue) to the consolidated financial statements for additional information.
[12]	Amount represents the negative impact of a cumulative adjustment to reduce revenue in the amount of $105 million recorded during the first quarter of 2020. The adjustment was associated with a previously recorded commercial benefit asset, reflected as a prepayment, to a customer with a long-term supply agreement that substantially exited its production of LCD panels. Refer to Note 5 (Revenue) to the consolidated financial statements for additional information.
[13]	Refer to Note 12 (Debt) to the consolidated financial statements for additional information on the bond redemption loss.
[14]	Primarily represents the gain recognized from the initial public offering of an investment in the fourth quarter of 2020.

Note 20 - Reportable Segments_5

Note 20 - Reportable Segments - Reconciliation of Reportable Segment Assets (Details) - USD ($) $ in Millions		Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Assets		$ 30,154	$ 30,775	$ 28,898
Current assets (1)		7,659	8,004
Other investments		64	177
Property, plant and equipment, net (3)		15,804	15,742
Other non-current assets (4)		2,056	2,140
Operating Segments [Member] | Reportable Segments [Member]
Assets		16,930	16,865	16,998
Operating Segments [Member] | Nonreportable Segments [Member]
Assets		2,024	2,157	1,028
Segment Reconciling Items [Member]
Current assets (1)	[1]	3,163	3,434	3,301
Other investments	[2]	54	177	43
Property, plant and equipment, net (3)	[3]	1,620	1,548	1,764
Other non-current assets (4)	[4]	$ 6,363	$ 6,594	$ 5,764
[1]	Includes current corporate assets, including cash, other receivables, prepaid expenses and current portion of long-term derivative assets.
[2]	Represents other corporate investments. Asset balance does not include equity method affiliate liability balance of $270 million for HSG in 2019. HSG became a fully consolidated subsidiary of Corning on September 9, 2020.
[3]	Represents corporate property not specifically identifiable to an operating segment.
[4]	Includes non-current corporate assets, including goodwill, other intangible assets, pension assets, long-term derivative assets, operating leases and deferred income taxes.

Note 20 - Reportable Segments_6

Note 20 - Reportable Segments -Selected Financial Information On Product Lines and Reportable Segments (Details) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2021		Dec. 31, 2020		Dec. 31, 2019
Net sales		$ 14,082		$ 11,303		$ 11,503
Operating Segments [Member]
Net sales of reportable segments and All Other	[2]	14,120	[1]	11,452	[1]	11,656
Impact of foreign currency movements (1)	[3]	(38)		(44)		(153)
Cumulative adjustment related to customer contract (2)	[4]			(105)
Net sales		14,082		11,303		11,503
Operating Segments [Member] | Display Technologies [Member]
Net sales of reportable segments and All Other		3,700		3,172		3,254
Operating Segments [Member] | Optical Communications [Member]
Net sales of reportable segments and All Other		4,349		3,563		4,064
Operating Segments [Member] | Optical Communications [Member] | Carrier Network [Member]
Net sales of reportable segments and All Other		3,200		2,612		2,885
Operating Segments [Member] | Optical Communications [Member] | Enterprise Network [Member]
Net sales of reportable segments and All Other		1,149		951		1,179
Operating Segments [Member] | Specialty Materials [Member]
Net sales of reportable segments and All Other		2,008		1,884		1,594
Operating Segments [Member] | Specialty Materials [Member] | Corning Gorilla Glass [Member]
Net sales of reportable segments and All Other		1,403		1,420		1,180
Operating Segments [Member] | Specialty Materials [Member] | Advanced Optics and Other Specially Glass [Member]
Net sales of reportable segments and All Other		605		464		414
Operating Segments [Member] | Environmental Technologies [Member]
Net sales of reportable segments and All Other		1,586		1,370		1,499
Operating Segments [Member] | Environmental Technologies [Member] | Automotive And Other [Member]
Net sales of reportable segments and All Other		936		883		907
Operating Segments [Member] | Environmental Technologies [Member] | Diesel [Member]
Net sales of reportable segments and All Other		650		487		592
Operating Segments [Member] | Life Science Products [Member]
Net sales of reportable segments and All Other		1,234		998		1,015
Operating Segments [Member] | Life Science Products [Member] | Labware [Member]
Net sales of reportable segments and All Other		671		552		550
Operating Segments [Member] | Life Science Products [Member] | Cell Culture Products [Member]
Net sales of reportable segments and All Other		563		446		465
Operating Segments [Member] | Segments All Other Member [Member]
Net sales of reportable segments and All Other		1,243		465		230
Operating Segments [Member] | Segments All Other Member [Member] | Polycrystalline Silicon [Member]
Net sales of reportable segments and All Other		892		194
Operating Segments [Member] | Segments All Other Member [Member] | Other [Member]
Net sales of reportable segments and All Other		$ 351		$ 271		$ 230
[1]	Includes HSG’s net sales and long-lived assets as of December 31, 2021 and 2020. Refer to Note 3 (Investments) and Note 4 (HSG Transactions and Acquisitions) to the consolidated financial statements for more information.
[2]	Net sales are attributed to countries based on location of customer.
[3]	This amount primarily represents the impact of foreign currency adjustments in the Display Technologies segment.
[4]	Amount represents the negative impact of a cumulative adjustment recorded during the first quarter of 2020 to reduce revenue in the amount of $105 million. The adjustment was associated with a previously recorded commercial benefit asset, reflected as a prepayment, to a customer with a long-term supply agreement that is exiting its production of LCD panels. Refer to Note 5 (Revenue) to the consolidated financial statements for additional information.

Note 20 - Reportable Segments_7

Note 20 - Reportable Segments - Information Concerning Principal Geographic Areas (Details) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2021	[1]	Dec. 31, 2020	[1]	Dec. 31, 2019
Operating Segments [Member]
Net sales of reportable segments and All Other	[2]	$ 14,120		$ 11,452		$ 11,656
Long- lived assets	[3]	21,429		21,650		20,278
UNITED STATES
Net sales of reportable segments and All Other	[2]	4,539		3,412		3,760
Long- lived assets	[3]	8,600		8,718		7,654
CANADA
Net sales of reportable segments and All Other	[2]	472		274		277
Long- lived assets	[3]	114		121		126
MEXICO
Net sales of reportable segments and All Other	[2]	93		75		55
Long- lived assets	[3]	289		239		267
North America [Member]
Net sales of reportable segments and All Other	[2]	5,104		3,761		4,092
Long- lived assets	[3]	9,003		9,078		8,047
JAPAN
Net sales of reportable segments and All Other	[2]	780		505		441
Long- lived assets	[3]	496		583		893
TAIWAN, PROVINCE OF CHINA
Net sales of reportable segments and All Other	[2]	983		887		880
Long- lived assets	[3]	1,923		2,247		2,280
CHINA
Net sales of reportable segments and All Other	[2]	4,495		3,734		3,096
Long- lived assets	[3]	4,966		4,469		3,816
KOREA, REPUBLIC OF
Net sales of reportable segments and All Other	[2]	640		748		1,051
Long- lived assets	[3]	3,479		3,597		3,625
Other Asia Pacific [Member]
Net sales of reportable segments and All Other	[2]	459		340		401
Long- lived assets	[3]	84		83		86
Asia Pacific [Member]
Net sales of reportable segments and All Other	[2]	7,357		6,214		5,869
Long- lived assets	[3]	10,948		10,979		10,700
GERMANY
Net sales of reportable segments and All Other	[2]	462		378		435
Long- lived assets	[3]	500		579		546
Other Europe [Member]
Net sales of reportable segments and All Other	[2]	925		838		886
Long- lived assets	[3]	910		931		914
Europe [Member]
Net sales of reportable segments and All Other	[2]	1,387		1,216		1,321
Long- lived assets	[3]	1,410		1,510		1,460
All Other [Member]
Net sales of reportable segments and All Other	[2]	272		261		374
Long- lived assets	[3]	$ 68		$ 83		$ 71
[1]	Includes HSG’s net sales and long-lived assets as of December 31, 2021 and 2020. Refer to Note 3 (Investments) and Note 4 (HSG Transactions and Acquisitions) to the consolidated financial statements for more information.
[2]	Net sales are attributed to countries based on location of customer.
[3]	Long-lived assets primarily include investments, plant and equipment, goodwill and other intangible assets.