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Number of claims in other cases currently involved alleging injuries from asbestos and similar amounts of monetary damages per case.

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The number of active hazardous waste sites for which the entity is responsible.

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Number of other cases currently involved alleging injuries from asbestos and similar amounts of monetary damages per case

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Period of undiscounted projection of claims and related legal fees represented by the estimated liability.

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Total costs accrued as of the balance sheet date for environmental loss contingencies.

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- Definition

The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

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This item represents the net total realized and unrealized gain (loss) included in earnings for the period as a result of selling or holding marketable securities categorized as trading, available-for-sale, or held-to-maturity, including the unrealized holding gain (loss) of held-to-maturity securities transferred to the trading security category and the cumulative unrealized gain (loss) which was included in other comprehensive income (a separate component of shareholders' equity) for available-for-sale securities transferred to trading securities during the period. Additionally, this item would include any gains (losses) realized during the period from the sale of investments accounted for under the cost method of accounting and losses recognized for other than temporary impairments (OTTI) of the subject investments.

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Maximum potential amount of future payments (undiscounted) the guarantor could be required to make under the guarantee or each group of similar guarantees before reduction for potential recoveries under recourse or collateralization provisions.

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- Definition

The amount recovered from insurance. These recoveries reduce costs and losses that are reported as a separate line item under operating expenses.

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Amount of loss contingency liability expected to be resolved within one year or the normal operating cycle, if longer.

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Amount of loss contingency liability expected to be resolved after one year or beyond the normal operating cycle, if longer.

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Amount of increase (decrease) in loss contingency liability.

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Reflects the estimated amount of loss from the specified contingency as of the balance sheet date.

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Number of pending claims pertaining to a loss contingency.

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Amount of the recorded obligation to transfer funds in the future for fixed or minimum amounts or quantities of goods or services at fixed or minimum prices (for example, as in take-or-pay contracts or throughput contracts).

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Note 3 - Commitments, Contingencies, and Guarantees (Details Textual) $ in Millions	1 Months Ended	6 Months Ended
	Jun. 09, 2016 USD ($)	Jun. 30, 2016 USD ($)	Apr. 27, 2016 USD ($)	Dec. 31, 2015 USD ($)	Apr. 16, 2000
Pittsburgh Corning Corporation PCC [Member] \| PPG Industries, Inc. [Member]
Equity Method Investment, Ownership Percentage		50.00%
Pittsburgh Corning Corporation PCC [Member] \| Asbestos Litigation [Member]
Loss Contingency, Pending Claims, Number					11,800
Pittsburgh Corning Corporation PCC [Member]
Equity Method Investment, Ownership Percentage		50.00%
PCC and PCE [Member]
Gain (Loss) on Investments	$ 56
Asbestos Litigation [Member] \| Amended Pittsburgh Corning Corporation Plan [Member] \| First Payment [Member]
Loss Contingency Required Payments Per Reorganization Plan			$ 70
Asbestos Litigation [Member] \| Amended Pittsburgh Corning Corporation Plan [Member] \| First Subsequent Anniversary [Member]
Loss Contingency Required Payments Per Reorganization Plan			35
Asbestos Litigation [Member] \| Amended Pittsburgh Corning Corporation Plan [Member] \| Second Subsequent Anniversary [Member]
Loss Contingency Required Payments Per Reorganization Plan			50
Asbestos Litigation [Member] \| Amended Pittsburgh Corning Corporation Plan [Member] \| Third Subsequent Anniversary [Member]
Loss Contingency Required Payments Per Reorganization Plan			35
Asbestos Litigation [Member] \| Amended Pittsburgh Corning Corporation Plan [Member] \| Fourth Subsequent Anniversary [Member]
Loss Contingency Required Payments Per Reorganization Plan			50
Asbestos Litigation [Member] \| Amended Pittsburgh Corning Corporation Plan [Member] \| Fifth Subsequent Anniversary [Member]
Loss Contingency Required Payments Per Reorganization Plan			50
Asbestos Litigation [Member] \| Amended Pittsburgh Corning Corporation Plan [Member]
Loss Contingency Required Payments Per Reorganization Plan			$ 290
Asbestos Litigation [Member] \| Amended PCC Plan and Non-PCC Asbestos Claims [Member]
Loss Contingency Accrual, Period Increase (Decrease)		$ (238)
Loss Contingency, Estimate of Possible Loss		440		$ 678
Asbestos Litigation [Member] \| PCC Asbestos Claims [Member]
Loss Contingency, Estimate of Possible Loss		290
Loss Contingency, Accrual, Noncurrent		220
Asbestos Litigation [Member] \| Non-PCC Asbestos Litigation [Member]
Loss Contingency, Estimate of Possible Loss		150
Loss Contingency, Accrual, Noncurrent		150
Loss Contingency, Accrual, Current		70
Asbestos Litigation [Member]
Loss Contingency, Accrual, Noncurrent		$ 370
Non-PCC Asbestos Litigation [Member]
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		37,300
Insurance Recoveries		$ 19
Loss Contingency Accrual, Period Increase (Decrease)		$ 150
Undiscounted Projection of Claims and Related Legal Fees, Period		20 years
Contingent Guarantees [Member]
Guarantor Obligations, Maximum Exposure, Undiscounted		$ 190		184
Environmental Cleanup and Related Litigation [Member]
Accrual for Environmental Loss Contingencies		47		37
Loss Contingency, Accrual, Noncurrent		394		440
Loss Contingency, Accrual, Current		76		238
Recorded Unconditional Purchase Obligation		$ 220		$ 220
Number of Hazardous Waste Sites		17