Consolidated Statements Of Changes In Shareholders' Equity (USD $) In Millions	Common Stock [Member]	Additional Paid-In Capital [Member]	Retained Earnings [Member]	Treasury Stock [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Total Corning Incorporated Shareholders' Equity [Member]	Non-Controlling Interests [Member]	Total
Balance at Dec. 31, 2009	$ 808	$ 12,707	$ 3,636	$ (1,207)	$ (401)	$ 15,543	$ 52	$ 15,595
Net income			3,558			3,558	(2)	3,556
Foreign currency translation adjustment and other					566	566	1	567
Net unrealized gain on investments					6	6		6
Net unrealized gain (loss) on designated hedges					(24)	(24)		(24)
Net change in unrecognized postretirement benefit plans					(104)	(104)		(104)
Total comprehensive income						4,002	(1)	4,001
Shares issued to benefit plans and for option exercises	5	141				146		146
Dividends on shares			(313)			(313)		(313)
Other, net		17		(20)		(3)		(3)
Balance at Dec. 31, 2010	813	12,865	6,881	(1,227)	43	19,375	51	19,426
Net income			2,805			2,805	(3)	2,802
Foreign currency translation adjustment and other					(21)	(21)	3	(18)
Net unrealized gain on investments					4	4		4
Net unrealized gain (loss) on designated hedges					(6)	(6)		(6)
Net change in unrecognized postretirement benefit plans					(109)	(109)		(109)
Total comprehensive income						2,673		2,673
Purchase of common stock for treasury				(779)		(779)		(779)
Shares issued to benefit plans and for option exercises	5	176		(7)		174		174
Dividends on shares			(354)			(354)		(354)
Other, net				(11)		(11)		(11)
Balance at Dec. 31, 2011	818	13,041	9,332	(2,024)	(89)	21,078	51	21,129
Net income			1,728			1,728	(5)	1,723
Foreign currency translation adjustment and other					(179)	(179)	1	(178)
Net unrealized gain on investments					13	13		13
Net unrealized gain (loss) on designated hedges					47	47		47
Net change in unrecognized postretirement benefit plans					(92)	(92)		(92)
Total comprehensive income						1,517	(4)	1,513
Purchase of common stock for treasury				(719)		(719)		(719)
Shares issued to benefit plans and for option exercises	7	105		(1)		111		111
Dividends on shares			(472)			(472)		(472)
Other, net				(29)		(29)		(29)
Balance at Dec. 31, 2012	$ 825	$ 13,146	$ 10,588	$ (2,773)	$ (300)	$ 21,486	$ 47	$ 21,533