Summary Of Significant Accounting Policies (Schedule Of Other Income (Expense), Net) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended	12 Months Ended
Sep. 30, 2010	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Component of Other Income, Nonoperating [Line Items]
Foreign currency transaction and hedge gains (losses), net		$ 8	$ (43)	$ (22)
Loss on retirement of debt	30	(26)		(30)
Net loss attributable to noncontrolling interests		5	3	2
Other, net		13	(61)	(31)
Total		83	118	184
Samsung Corning Precision Materials Co., Ltd. [Member]
Component of Other Income, Nonoperating [Line Items]
Royalty income from affiliated companies		$ 83	$ 219	$ 265

Foreign currency exchange and hedge gains/(losses), net.

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Difference between the fair value of payments made and the carrying amount of debt which is extinguished prior to maturity.

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Amount of Net Income (Loss) attributable to noncontrolling interest.

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The aggregate amount of other expense amounts, the components of which are not separately disclosed on the income statement, resulting from ancillary business-related activities (that is, excluding major activities considered part of the normal operations of the business) also known as other nonoperating expense recognized during the period. Such amounts may include: (a) unusual costs, (b) loss on foreign exchange transactions, (c) losses on securities (net of profits), and (d) miscellaneous other expense items.

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The net amount of other income and expense amounts, the components of which are not separately disclosed on the income statement, resulting from ancillary business-related activities (that is, excluding major activities considered part of the normal operations of the business) also known as other nonoperating income (expense) recognized for the period. Such amounts may include: (a) dividends, (b) interest on securities, (c) net gains or losses on securities, (d) unusual costs, (e) gains or losses on foreign exchange transactions, and (f) miscellaneous other income and expense items.

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Revenue earned during the period from the leasing or otherwise lending to a third party the entity's rights or title to certain property. Royalty revenue is derived from a percentage or stated amount of sales proceeds or revenue generated by the third party using the entity's property. Examples of property from which royalties may be derived include patents and oil and mineral rights.

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