Earnings Per Common Share (Tables)

12 Months Ended

Dec. 31, 2012

Earnings Per Common Share [Abstract]

Schedule Of Reconciliation Of Amounts Used In Basic And Diluted Earnings Per Common Share

	Years ended December 31,
	2012			2011			2010
	Net income attributable to Corning Incorporated	Weighted- average shares	Per share amount	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	$1,728	1,494	$1.16	$2,805	1,562	$1.80	$3,558	1,558	$2.28
Effect of dilutive securities:
Employee stock options and awards		12			21			23
Diluted earnings per common share	$1,728	1,506	$1.15	$2,805	1,583	$1.77	$3,558	1,581	$2.25

Schedule Of Potential Common Shares Were Excluded From The Calculation Of Diluted Earnings Per Common Share

	Years ended December 31,
	2012	2011	2010
Potential common shares excluded from the calculation of diluted earnings per share:
Employee stock options and awards	43	29	43
Total	43	29	43