Earnings (Loss) Per Common Share (Tables)

12 Months Ended

Dec. 31, 2019

Earnings (Loss) Per Common Share [Abstract]

Computation of Basic and Diluted Earnings (Loss) per Common Share

	Years ended December 31,
	2019		2018		2017
Net income (loss) attributable to Corning Incorporated	$	960	$	1,066	$	(497)
Less: Series A convertible preferred stock dividend		98		98		98
Net income (loss) available to common stockholders - basic		862		968		(595)
Plus: Series A convertible preferred stock dividend		98		98
Net income (loss) available to common stockholders - diluted	$	960	$	1,066	$	(595)
Weighted-average common shares outstanding - basic		776		816		895
Effect of dilutive securities:
Stock options and other dilutive securities		8		10
Series A convertible preferred stock (1)		115		115
Weighted-average common shares outstanding - diluted		899		941		895
Basic earnings (loss) per common share	$	1.11	$	1.19	$	(0.66)
Diluted earnings (loss) per common share	$	1.07	$	1.13	$	(0.66)
Anti-dilutive potential shares excluded from diluted ‎  earnings (loss) per common share:
Series A convertible preferred stock dividend (1)						115
Employee stock options and awards		2		2		13
Total		2		2		128

(1)For the year ended December 31, 2017, the Series A preferred stock was anti-dilutive and therefore excluded from the calculation of diluted earnings (loss) per share