Note 17 - Shareholders' Equity (Details) - Changes in Capital Stock (USD $) In Millions, unless otherwise specified	10 Months Ended		11 Months Ended	12 Months Ended
	Dec. 31, 2014		Mar. 31, 2014	Dec. 31, 2014		Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Note 17 - Shareholders' Equity (Details) - Changes in Capital Stock [Line Items]
Balance (in Shares)	1,672			1,672		1,661
Balance	$ 836			$ 836		$ 831
Balance (in Shares)	(398)			(398)		(262)
Balance	(6,727)			(6,727)		(4,099)
Shares issued to benefit plans and for option exercises				264		144	111
Shares issued to benefit plans and for option exercises				264		144	111
Shares purchased for treasury (in Shares)	(98.2)		(118.9)
Shares purchased for treasury	(2,000)		(2,000)	(2,483)		(1,516)	(719)
Other, net				(7)		(33)	(28)
Common Stock [Member]
Note 17 - Shareholders' Equity (Details) - Changes in Capital Stock [Line Items]
Balance (in Shares)	1,672	[1]		1,672	[1]	1,661	1,649	1,636
Balance	836	[1]		836	[1]	831	825	818
Shares issued to benefit plans and for option exercises (in Shares)				11		12	13
Shares issued to benefit plans and for option exercises				5		6	7
Shares issued to benefit plans and for option exercises				5		6	7
Treasury Stock [Member]
Note 17 - Shareholders' Equity (Details) - Changes in Capital Stock [Line Items]
Balance (in Shares)	(398)	[1]		(398)	[1]	(262)	(179)	(121)
Balance	(6,727)	[1]		(6,727)	[1]	(4,099)	(2,773)	(2,024)
Shares issued to benefit plans and for option exercises				(2)		(1)	(1)
Shares issued to benefit plans and for option exercises				(2)		(1)	(1)
Shares purchased for treasury (in Shares)				(135.0)		(82.0)	(56.0)
Shares purchased for treasury				(2,612)		(1,316)	(719)
Other, net (in Shares)				(1)		(1)	(2)
Other, net				$ (14)		$ (9)	$ (29)

[1] On January 15, 2014, in conjunction with the Acquisition of Corning Precision Materials, Corning issued 2,300 Fixed Rate Cumulative Convertible Preferred Stock, Series A ("Preferred Stock"), par value $100 per share, at an issue price of $1 million per share, for an aggregate issue price of $2.3 billion. There have been no further issuances or conversions of Preferred Stock during 2014.