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		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 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)	$ 169	$ 638	$ 470	$ 1,132
Net income available to common stockholders - basic (in Dollars)	145	638	425	1,132
Net income available to common stockholders - diluted (in Dollars)	145	638	425	1,132
Weighted-average common shares outstanding - basic	1,302	1,469	1,331	1,471
Effect of dilutive securities:
Stock options and other dilutive securities	13	9	12	9
Weighted-average common shares outstanding - diluted	1,315	1,478	1,343	1,480
Basic earnings per common share (in Dollars per share)	$ 0.11	$ 0.43	$ 0.32	$ 0.77
Diluted earnings per common share (in Dollars per share)	$ 0.11	$ 0.43	$ 0.32	$ 0.76
Anti-dilutive potential shares excluded from diluted earnings per common share:
Antidilutive shares	135	38	136	43
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)	$ 24		$ 45
Anti-dilutive potential shares excluded from diluted earnings per common share:
Antidilutive shares	115		106
Stock Compensation Plan [Member]
Anti-dilutive potential shares excluded from diluted earnings per common share:
Antidilutive shares	20	38	24	43
Forward Contracts [Member]
Anti-dilutive potential shares excluded from diluted earnings per common share:
Antidilutive shares			6