Note 3 - Commitments, Contingencies, and Guarantees (Details) (USD $) In Millions, unless otherwise specified																			3 Months Ended			3 Months Ended
	Mar. 31, 2014	Dec. 31, 2013	Mar. 31, 2014 Credit Facility [Member] Dow Corning Corporation [Member]	Dec. 31, 2013 Credit Facility [Member] Dow Corning Corporation [Member]	Mar. 31, 2014 Contingent Guarantees [Member]	Dec. 31, 2013 Contingent Guarantees [Member]	Nov. 12, 2013 First Payment [Member] Pittsburgh Corning Corporation (PCC) [Member] Amended Pittsburgh Corning Corporation Plan [Member] Asbestos Litigation [Member]	Nov. 12, 2013 First Subsequent Anniversary [Member] Pittsburgh Corning Corporation (PCC) [Member] Amended Pittsburgh Corning Corporation Plan [Member] Asbestos Litigation [Member]	Nov. 12, 2013 Second Subsequent Anniversary [Member] Pittsburgh Corning Corporation (PCC) [Member] Amended Pittsburgh Corning Corporation Plan [Member] Asbestos Litigation [Member]	Nov. 12, 2013 Third Subsequent Anniversary [Member] Pittsburgh Corning Corporation (PCC) [Member] Amended Pittsburgh Corning Corporation Plan [Member] Asbestos Litigation [Member]	Nov. 12, 2013 Fourth Subsequent Anniversary [Member] Pittsburgh Corning Corporation (PCC) [Member] Amended Pittsburgh Corning Corporation Plan [Member] Asbestos Litigation [Member]	Nov. 12, 2013 Fifth Subsequent Anniversary [Member] Pittsburgh Corning Corporation (PCC) [Member] Amended Pittsburgh Corning Corporation Plan [Member] Asbestos Litigation [Member]	Mar. 31, 2014 Dow Corning Corporation [Member] Corning Inc. [Member]	Mar. 31, 2014 Dow Corning Corporation [Member] Dow Chemical Company [Member]	Apr. 16, 2000 Pittsburgh Corning Corporation (PCC) [Member] Corning Inc. [Member] Asbestos Litigation [Member]	Mar. 31, 2014 Pittsburgh Corning Corporation (PCC) [Member] Corning Inc. [Member]	Mar. 31, 2014 Pittsburgh Corning Corporation (PCC) [Member] PPG Industries, Inc. [Member]	Nov. 12, 2013 Pittsburgh Corning Corporation (PCC) [Member] Amended Pittsburgh Corning Corporation Plan [Member] Asbestos Litigation [Member]	Mar. 31, 2014 Non-PCC [Member] Asbestos Litigation [Member]	Mar. 31, 2014 Environmental Cleanup And Related Litigation [Member]	Dec. 31, 2013 Environmental Cleanup And Related Litigation [Member]	Mar. 31, 2014 Corning Inc. [Member] Asbestos Litigation [Member]	Mar. 31, 2014 Dow Corning Corporation [Member] Minimum [Member] Bankruptcy Proceedings [Member]	Mar. 31, 2014 Dow Corning Corporation [Member] Maximum [Member] Bankruptcy Proceedings [Member]	Mar. 31, 2014 Asbestos Litigation [Member]	Dec. 31, 2013 Asbestos Litigation [Member]
Note 3 - Commitments, Contingencies, and Guarantees (Details) [Line Items]
Equity Method Investment, Ownership Percentage													50.00%	50.00%		50.00%	50.00%
Loss Contingency, Estimate of Possible Loss																							$ 94	$ 309	$ 692	$ 690
Loss Contingency, Pending Claims, Number															11,800
Loss Contingency, Required Payments Per Reorganization Plan							70	35	50	35	50	50						290
Number Of Other Cases Currently Involved Alleging Injuries From Asbestos And Similar Amounts Of Monetary Damages Per Case																						9,700
Number Of Claims In Other Cases Currently Involved Alleging Injuries From Asbestos And Similar Amounts Of Monetary Damages Per Case																						37,400
Insurance Recoveries																						19
Loss Contingency Accrual, Period Increase (Decrease)																			150
Guarantor Obligations, Maximum Exposure, Undiscounted			25	25	174	152
Recorded Unconditional Purchase Obligation	123	126
Number of Hazardous Waste Sites	16
Accrual for Environmental Loss Contingencies																				$ 34	$ 15