Consolidated Statements of Income (Unaudited) (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended				6 Months Ended
	Jun. 30, 2013		Jun. 30, 2012		Jun. 30, 2013		Jun. 30, 2012
Net sales	$ 1,982		$ 1,908		$ 3,796		$ 3,828
Cost of sales	1,099		1,100		2,143		2,196
Gross margin	883		808		1,653		1,632
Operating expenses:
Selling, general and administrative expenses	266		286		525		559
Research, development and engineering expenses	179		185		357		369
Amortization of purchased intangibles	8		4		15		9
Asbestos litigation charge	6	[1]	5	[1]	8	[1]	6	[1]
Operating income	424		328		748		689
Equity in earnings of affiliated companies (Note 9)	166		259		339		477
Interest income	2		3		4		7
Interest expense	(28)		(24)		(64)		(44)
Other income, net (Note 1)	265		8		330		37
Income before income taxes	829		574		1,357		1,166
Provision for income taxes (Note 5)	(191)		(100)		(225)		(218)
Net income attributable to Corning Incorporated	$ 638	[2]	$ 474	[2]	$ 1,132	[2]	$ 948	[2]
Earnings per common share attributable to Corning Incorporated:
Basic (Note 6) (in Dollars per share)	$ 0.43		$ 0.31		$ 0.77		$ 0.63
Diluted (Note 6) (in Dollars per share)	$ 0.43		$ 0.31		$ 0.76		$ 0.62
Dividends declared per common share (in Dollars per share)	$ 0.10		$ 0.075		$ 0.19		$ 0.15

[1] In the three and six months ended June 30, 2013, Corning recorded a charge of $6 million and $8 million, respectively, to adjust the asbestos liability for the change in value of components of the Amended PCC Plan. In the three and six month ended June 30, 2012, Corning recorded a charge of $5 million and $6 million, respectively, to adjust the asbestos liability for the change in value of components of the Amended PCC Plan.

[2] As revised for the change in our method of recognizing pension expense. See Note 1 of Notes to Consolidated Financial Statements for a discussion of the change and the impacts of the change for the three and six months ended June 30, 2012.