Note 6 - Earnings per Common Share (Tables)

6 Months Ended

Jun. 30, 2013

Earnings Per Share [Text Block]

Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]

	Three months ended June 30,
	2013			2012
	Net income attributable to Corning Incorporated	Weighted- average shares	Per share amount	Net income attributable to Corning Incorporated	Weighted- average shares	Per share amount
Basic earnings per common share	$638	1,469	$0.43	$474	1,506	$0.31
Effect of dilutive securities:
Stock options and other dilutive securities		9			12
Diluted earnings per common share	$638	1,478	$0.43	$474	1,518	$0.31

	Six months ended June 30,
	2013			2012
	Net income attributable to Corning Incorporated	Weighted- average shares	Per share amount	Net income attributable to Corning Incorporated	Weighted- average shares	Per share amount
Basic earnings per common share	$1,132	1,471	$0.77	$948	1,511	$0.63
Effect of dilutive securities:
Stock options and other dilutive securities		9			13
Diluted earnings per common share	$1,132	1,480	$0.76	$948	1,524	$0.62

Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table Text Block]

	Three months ended June 30,		Six months ended June 30,
	2013	2012	2013	2012
Stock options and other dilutive securities excluded from the calculation of diluted earnings per common share	38	42	43	42