Consolidated Statements Of Income (USD $) In Millions, except Per Share data	3 Months Ended				9 Months Ended
	Sep. 30, 2011		Sep. 30, 2010		Sep. 30, 2011		Sep. 30, 2010
Consolidated Statements Of Income
Net sales	$ 2,075		$ 1,602		$ 6,003		$ 4,867
Cost of sales	1,097		878		3,262		2,585
Gross margin	978		724		2,741		2,282
Operating expenses:
Selling, general and administrative expenses	216		250		750		731
Research, development and engineering expenses	166		148		494		437
Amortization of purchased intangibles	4		2		11		6
Restructuring, impairment and other credits (Note 2)			(1)				(3)
Asbestos litigation charge (credit) (Note 3)	5	[1]	6	[1]	15	[1]	(41)	[1]
Operating income	587		319		1,471		1,152
Equity in earnings of affiliated companies (Note 9)	324		504		1,150		1,447
Interest income	6		3		15		8
Interest expense	(23)		(29)		(72)		(81)
Other income, net (Note 1)	27		2		97		130
Income before income taxes	921		799		2,661		2,656
Provision for income taxes (Note 5)	(110)		(14)		(347)		(142)
Net income attributable to Corning Incorporated	$ 811		$ 785		$ 2,314		$ 2,514
Earnings per common share attributable to Corning Incorporated:
Basic (Note 6)	$ 0.52		$ 0.50		$ 1.48		$ 1.61
Diluted (Note 6)	$ 0.51		$ 0.50		$ 1.46		$ 1.59
Dividends declared per common share	$ 0.05		$ 0.05		$ 0.15		$ 0.15

[1] In the three and nine months ended September 30, 2011, Corning recorded a charge of $5 million and $15 million, respectively, to adjust the asbestos liability for the change in value of the components of the Amended PCC Plan. In the three and nine months ended September 30, 2010, Corning recorded a charge of $6 million and a net credit of $41 million, respectively, primarily reflecting the change in the terms of the proposed asbestos settlement.