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Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented.

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The amount of net income (loss) for the period per each share of common stock or unit outstanding during the reporting period.

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The amount of net income (loss) for the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period.

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The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

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Net income after adjustments for dividends on preferred stock (declared in the period) and/or cumulative preferred stock (accumulated for the period).

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Net Income or Loss Available to Common Stockholders plus adjustments resulting from the assumption that dilutive convertible securities were converted, options or warrants were exercised, or that other shares were issued upon the satisfaction of certain conditions.

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The average number of shares or units issued and outstanding that are used in calculating diluted EPS or earnings per unit (EPU), determined based on the timing of issuance of shares or units in the period.

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Note 18 - Earnings Per Common Share (Details) - Computation of Basic and Diluted Earnings per Common Share (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Note 18 - Earnings Per Common Share (Details) - Computation of Basic and Diluted Earnings per Common Share [Line Items]
Net income attributable to Corning Incorporated (in Dollars)	$ 988us-gaap_NetIncomeLoss	$ 1,014us-gaap_NetIncomeLoss	$ 169us-gaap_NetIncomeLoss	$ 301us-gaap_NetIncomeLoss	$ 421us-gaap_NetIncomeLoss	$ 408us-gaap_NetIncomeLoss	$ 638us-gaap_NetIncomeLoss	$ 494us-gaap_NetIncomeLoss	$ 2,472us-gaap_NetIncomeLoss	$ 1,961us-gaap_NetIncomeLoss	$ 1,636us-gaap_NetIncomeLoss
Net income available to common stockholders - diluted (in Dollars)									2,472	1,961	1,636
Weighted-average common shares outstanding - basic									1,305	1,452	1,494
Effect of dilutive securities:
Weighted-average common shares outstanding - diluted									1,427	1,462	1,506
Basic earnings per common share (in Dollars per share)	$ 0.76us-gaap_EarningsPerShareBasic	$ 0.77us-gaap_EarningsPerShareBasic	$ 0.11us-gaap_EarningsPerShareBasic	$ 0.21us-gaap_EarningsPerShareBasic	$ 0.30us-gaap_EarningsPerShareBasic	$ 0.28us-gaap_EarningsPerShareBasic	$ 0.43us-gaap_EarningsPerShareBasic	$ 0.33us-gaap_EarningsPerShareBasic	$ 1.82us-gaap_EarningsPerShareBasic	$ 1.35us-gaap_EarningsPerShareBasic	$ 1.10us-gaap_EarningsPerShareBasic
Diluted earnings per common share (in Dollars per share)	$ 0.70us-gaap_EarningsPerShareDiluted	$ 0.72us-gaap_EarningsPerShareDiluted	$ 0.11us-gaap_EarningsPerShareDiluted	$ 0.20us-gaap_EarningsPerShareDiluted	$ 0.30us-gaap_EarningsPerShareDiluted	$ 0.28us-gaap_EarningsPerShareDiluted	$ 0.43us-gaap_EarningsPerShareDiluted	$ 0.33us-gaap_EarningsPerShareDiluted	$ 1.73us-gaap_EarningsPerShareDiluted	$ 1.34us-gaap_EarningsPerShareDiluted	$ 1.09us-gaap_EarningsPerShareDiluted
Anti-dilutive potential shares excluded from diluted earnings per common share:
Anti-dilutive potential shares excluded from diluted earnings per common share									27	42	43
Net income available to common stockholders - basic (in Dollars)									2,378	1,961	1,636
Convertible Preferred Stock, Series A [Member]
Note 18 - Earnings Per Common Share (Details) - Computation of Basic and Diluted Earnings per Common Share [Line Items]
Series A convertible preferred stock dividend (in Dollars)									$ 94
Effect of dilutive securities:
Effect of dilutive securities									110
Stock Compensation Plan [Member]
Anti-dilutive potential shares excluded from diluted earnings per common share:
Anti-dilutive potential shares excluded from diluted earnings per common share									24	39	43
Forward Contracts [Member]
Anti-dilutive potential shares excluded from diluted earnings per common share:
Anti-dilutive potential shares excluded from diluted earnings per common share									3	3
Stock Options and Other Dilutive Securities [Member]
Effect of dilutive securities:
Effect of dilutive securities									12	10	12