Consolidated Statements Of Income (USD $) In Millions, except Per Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Consolidated Statements Of Income [Abstract]
Net sales	$ 8,012	$ 7,890	$ 6,632
Cost of sales	4,615	4,324	3,583
Gross margin	3,397	3,566	3,049
Operating expenses:
Selling, general and administrative expenses	1,165	1,033	1,015
Research, development and engineering expenses	745	671	603
Amortization of purchased intangibles	19	15	8
Restructuring, impairment and other charges (credits) (Note 2)	133	129	(329)
Asbestos litigation charge (credit) (Note 7)	14	24	(49)
Operating income	1,321	1,694	1,801
Equity in earnings of affiliated companies (Note 7)	810	1,471	1,958
Interest income	14	19	11
Interest expense	(111)	(89)	(109)
Other income, net	83	118	184
Income before income taxes	2,117	3,213	3,845
Provision for income taxes (Note 6)	(389)	(408)	(287)
Net income attributable to Corning Incorporated	$ 1,728	$ 2,805	$ 3,558
Earnings per common share attributable to Corning Incorporated:
Basic (Note 18)	$ 1.16	$ 1.80	$ 2.28
Diluted (Note 18)	$ 1.15	$ 1.77	$ 2.25
Dividends declared per common share	$ 0.32	$ 0.23	$ 0.20