Note 19 - Reportable Segments (Details) - Reconciliation of Reportable Segment Net Income (Loss) to Consolidated Net Income (USD $) In Millions, unless otherwise specified	3 Months Ended				6 Months Ended
	Jun. 30, 2014		Jun. 30, 2013		Jun. 30, 2014		Jun. 30, 2013
Segment Reporting, Revenue Reconciling Item [Line Items]
Net Income	$ 169		$ 638		$ 470		$ 1,132
Unallocated amounts:
Net financing costs (1)	(30)	[1]	(28)	[1]	(59)	[1]	(62)	[1]
Stock-based compensation expense	(13)		(14)		(28)		(25)
Exploratory research	(24)		(27)		(51)		(51)
Corporate contributions	(11)		(12)		(16)		(25)
Equity in earnings of affiliated companies, net of impairments (2)	59	[2]	49	[2]	151	[2]	83	[2]
Asbestos settlement	(4)		(6)		(6)		(8)
Purchased collars and average rate forward contracts	(141)		227		(139)		251
Other corporate items (3)	(55)	[3]	(52)	[3]	(57)	[3]	34	[3]
Reportable Segments [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Net Income	447		532		774		994
Non Reportable Segments [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Net Income	$ (59)		$ (31)		$ (99)		$ (59)

[1] Net financing costs include interest income, interest expense and investment gains associated with benefit plans.

[2] Primarily represents the equity earnings of Dow Corning, which includes our portion of a mark-to-market gain on a derivative instrument, totaling $5 million and $37 million, for the three and six months ended June 30, 2014, and a $9 million and $11 million restructuring charge for our share of costs for headcount reductions and asset write-offs for the three and six months ended June 30, 2013.

[3] For the six months ended June 30, 2013, Corning recorded a $54 million tax benefit for the impact of the American Taxpayer Relief Act enacted on January 3, 2013 and made retroactive to 2012.