Note 6 - 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
	Mar. 31, 2014	Mar. 31, 2013
Note 6 - Earnings Per Common Share (Details) - Computation of Basic and Diluted Earnings per Common Share [Line Items]
Net income attributable to Corning Incorporated (in Dollars)	$ 301	$ 494
Net income available to common stockholders - basic (in Dollars)	280	494
Net income available to common stockholders - diluted (in Dollars)	280	494
Weighted-average common shares outstanding - basic	1,359	1,472
Effect of dilutive securities:
Stock options and other dilutive securities	11	9
Weighted-average common shares outstanding - diluted	1,370	1,481
Basic earnings per common share (in Dollars per share)	$ 0.21	$ 0.33
Diluted earnings per common share (in Dollars per share)	$ 0.20	$ 0.33
Antidilutive potential shares excluded from diluted earnings per common share:
Antidilutive shares	138	47
Stock Compensation Plan [Member]
Antidilutive potential shares excluded from diluted earnings per common share:
Antidilutive shares	29	47
Forward Contracts [Member]
Antidilutive potential shares excluded from diluted earnings per common share:
Antidilutive shares	12
Convertible Preferred Stock, Series A [Member]
Note 6 - Earnings Per Common Share (Details) - Computation of Basic and Diluted Earnings per Common Share [Line Items]
Less: Series A convertible preferred stock dividend (in Dollars)	$ (21)
Antidilutive potential shares excluded from diluted earnings per common share:
Antidilutive shares	97