Earnings Per Common Share (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions		3 Months Ended		6 Months Ended
		Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Net income attributable to Corning Incorporated		$ 92	$ 738	$ 591	$ 149
Less: Series A convertible preferred stock dividend		24	24	49	49
Net income available to common stockholders – basic		68	714	542	100
Plus: Series A convertible preferred stock dividend			24	49
Net income available to common stockholders – diluted		$ 68	$ 738	$ 591	$ 100
Weighted-average common shares outstanding - basic (in shares)		781	819	782	833
Effect of dilutive securities:
Weighted-average common shares outstanding - diluted (in shares)		789	943	906	843
Basic earnings per common share (in dollars per share)		$ 0.09	$ 0.87	$ 0.69	$ 0.12
Diluted earnings per common share (in dollars per share)		$ 0.09	$ 0.78	$ 0.65	$ 0.12
Anti-dilutive potential shares excluded from diluted earnings per common share:
Anti-dilutive potential shares excluded from diluted earnings (loss) per common share (in shares)		117	2	2	117
Stock Compensation Plan [Member]
Effect of dilutive securities:
Effect of dilutive securities (in shares)		8	9	9	10
Anti-dilutive potential shares excluded from diluted earnings per common share:
Anti-dilutive potential shares excluded from diluted earnings (loss) per common share (in shares)		2	2	2	2
Series A Convertible Preferred Stock [Member]
Effect of dilutive securities:
Effect of dilutive securities (in shares)			115	115
Anti-dilutive potential shares excluded from diluted earnings per common share:
Anti-dilutive potential shares excluded from diluted earnings (loss) per common share (in shares)	[1]	115			115

[1] For the quarter ended June 30, 2019, and the six months ended June 30, 2018, the Series A convertible preferred stock was anti-dilutive and therefore was excluded from the calculation of diluted earnings per share