2.2.0.25falsefalse20102 - Disclosure - Summary of Significant Accounting Policies (Policy)truefalsefalse1falsefalseUSDfalsefalse1/1/2010 - 12/31/2010 USD ($) USD ($) / shares $Duration_1_1_2010_To_12_31_2010http://www.sec.gov/CIK0000024741duration2010-01-01T00:00:002010-12-31T00:00:00Unit12Standardhttp://www.xbrl.org/2003/iso4217USDiso42170Unit14Dividehttp://www.xbrl.org/2003/iso4217USDiso4217http://www.xbrl.org/2003/instancesharesxbrli0Unit1Standardhttp://www.xbrl.org/2003/instancesharesxbrli0Unit13Standardhttp://www.xbrl.org/2003/instancepurexbrli0USDUSD$2true0glw_SignificantAccountingPoliciesAbstractglwfalsenadurationSignificant Accounting Policies [Abstract]falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringSignificant Accounting Policies [Abstract]falsefalseSummary of Significant Accounting Policies3false0glw_BasisOfPresentationPolicyTextBlockglwfalsenadurationDescription of the basis of accounting used to prepare the financial statements (for example, U.S. Generally Accepted...falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1falsefalsefalse00<div> Basis of Presentation and Principles of Consolidation   Our consolidated financial statements were prepared in conformity with generally accepted accounting principles in the U.S. and include the assets, liabilities, revenues and expenses of all majority-owned subsidiaries over which Corning exercises control.   The equity method of accounting is used for investments in affiliated companies that are not controlled by Corning and in which our interest is generally between 20% and 50% and we have significant influence over the entity.  Our share of earnings or losses of affiliated companies, in which at least 20% of the voting securities is owned and we have significant influence but not control over the entity, is included in consolidated operating results.   We use the cost method to account for our investments in companies that we do not control and for which we do not have the ability to exercise significant influence over operating and financial policies.  In accordance with the cost method, these investments are recorded at cost or fair value, as appropriate.   All material intercompany accounts, transactions and profits are eliminated in consolidation.   Certain prior year amounts have been reclassified to conform to the current-year presentation.  These reclassifications had no impact on our results of operations, financial position, or changes in shareholders' equity.   Effective January 1, 2009, the Company changed the presentation of equity in earnings of affiliated companies in the Consolidated Statements of Income from below "Benefit (provision) for income taxes" to above "Income before income taxes."  The change in presentation reflects the strategic nature and economic importance of the Company's investments accounted for under the equity method of accounting.  There was no effect on the Company's consolidated results of operation, financial condition, or cash flows as a result of this change.   Effective January 1, 2009, the Company adopted requirements for reporting noncontrolling interests in financial statements.  A noncontrolling interest, previously called a minority interest, is the portion of equity in a subsidiary not attributable, directly or indirectly, to a parent.  Under the new standard, noncontrolling interests in subsidiaries are now included as a component of equity in the consolidated statements of financial position.  This guidance also provides the required accounting treatment for changes in ownership of noncontrolling interests.  As required, the related presentation and disclosure provisions have been applied retrospectively.  For all years presented, amounts attributable to noncontrolling interests were not significant and therefore, are not presented separately on the consolidated statements of income.  These amounts, which have been included in "Other income (expense), net," are provided below.   Effective April 1, 2009, the Company, as required, adopted the following which resulted from the issuance of new fair value accounting standards:   ·We changed the method for determining whether an other-than-temporary impairment exists for debt securities and for determining the amount of an impairment charge to be recorded in earnings; ·We adopted new guidance for addressing the determination of (a) when a market for an asset or a liability is active or inactive and (b) when a particular transaction is distressed; and ·If applicable, we will provide required disclosures about fair value of financial instruments for interim reporting periods as well as in annual financial statements.   Effective September 30, 2009, the Financial Accounting Standards Board (FASB) established The FASB Accounting Standards CodificationÔ (ASC) as the source of authoritative accounting to be applied by nongovernmental entities in the preparation of financial statements.  Except for newly issued standards that have not been codified, references to codified literature have been updated to reflect this change.   Beginning in 2010, the Company moved from a lattice-based binomial model to a multiple-point Black-Scholes model to estimate the fair value of its employee stock option awards.  The multiple-point Black-Scholes model incorporates all assumptions required, and provides an appropriate fair value estimate while improving transparency and efficiency.  The impact of the change in valuation models was not significant to Corning's consolidated results of operations or financial condition.   Effective January 1, 2010, the Company adopted required changes to consolidation guidance for variable interest entities that require an enterprise to perform an analysis to determine whether the enterprise's variable interest or interests give it a controlling financial interest in a variable interest entity.  This analysis identifies the primary beneficiary of a variable interest entity as the enterprise that has (1) the power to direct the activities of a variable interest entity that most significantly impact the entity's economic performance and (2) the obligation to absorb losses of the entity that could potentially be significant to the variable interest entity, or the right to receive benefits from the entity that could potentially be significant to the variable interest entity.  In addition, the required changes provide guidance on shared power and joint venture relationships, remove the scope exemption for qualified special purpose entities, revise the definition of a variable interest entity, and require additional disclosures.  The adoption of this standard was not material to Corning's consolidated results of operations or financial condition.   The impact of adopting these fair value standards was not significant.   </div>Basis of Presentation and Principles of Consolidation   Our consolidated financial statements were prepared in conformity with generally acceptedfalsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringDescription of the basis of accounting used to prepare the financial statements (for example, U.S. Generally Accepted Accounting Principles, Other Comprehensive Basis of Accounting, IFRS).No authoritative reference available.falsefalseBasis of Presentation and Principles of Consolidation4false0us-gaap_UseOfEstimatesus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Use of Estimates   The preparation of financial statements requires management to make estimates and assumptions that affect amounts reported in the consolidated financial statements and related notes.  Significant estimates and assumptions in these consolidated financial statements include restructuring and other charges and credits, allowances for doubtful accounts receivable, estimates of fair value associated with goodwill and long-lived asset impairment tests, estimates of the fair value of assets held for disposal, estimates of fair value of investments, equity interests, environmental and legal liabilities, warranty liabilities, income taxes and deferred tax valuation allowances, the determination of discount and other rate assumptions for pension and other postretirement employee benefit expenses and the determination of the fair value of stock based compensation involving assumptions about forfeiture rates, stock volatility, discount rates, and expected term.  Due to the inherent uncertainty involved in making estimates, actual results reported in future periods may be different from these estimates.Use of Estimates   The preparation of financial statements requires management to make estimates and assumptions that affect amounts reported in thefalsefalsefalsefalsefalseOtherxbrli:stringItemTypestringProvides an entity's explanation that the preparation of financial statements in conformity with generally accepted accounting principles requires the use of management estimates. Estimates used in the determination of carrying amounts of assets or liabilities, or in disclosure of gain or loss contingencies should be disclosed if known information available prior to issuance of the financial statements indicates that both of these criteria are met: (1) It is at least reasonably possible that the estimate of the effect on the financial statements of a condition, situation, or set of circumstances that existed at the date of the financial statements will change in the near term (less than one year from the date of issuance) due to one or more future confirming events, and (2) The effect of the change would be material to the financial statements. The disclosure should indicate the nature of the uncertainty and include an indication that it is at least reasonably possible that a change in the estimate will occur in the near term. Disclosure of the factors that cause the estimate to be sensitive to change also is encouraged. Entities also may identify those areas that are subject to significant estimates.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Statement of Position (SOP) -Number 94-6 -Paragraph 11, 14 falsefalseUse of Estimates5false0us-gaap_RevenueRecognitionPolicyTextBlockus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1falsefalsefalse00<div> <div class="MetaData"> Revenue Recognition   Revenue for sales of goods is recognized when a firm sales agreement is in place, delivery has occurred and sales price is fixed or determinable and collection is reasonably assured.  If customer acceptance of products is not reasonably assured, sales are recorded only upon formal customer acceptance.  Sales of goods typically do not include multiple product and/or service elements.   At the time revenue is recognized, allowances are recorded, with the related reduction to revenue, for estimated product returns, allowances and price discounts based upon historical experience and related terms of customer arrangements.  Where we have offered product warranties, we also establish liabilities for estimated warranty costs based upon historical experience and specific warranty provisions.  Warranty liabilities are adjusted when experience indicates the expected outcome will differ from initial estimates of the liability.</div> </div>Revenue Recognition   Revenue for sales of goods is recognized when a firm sales agreement is in place, delivery has occurred and sales price is fixedfalsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringDescribes an entity's accounting policy for revenue recognition. If the entity has different policies for different types of revenue transactions, the policy for each material type of transaction should be disclosed. If a sales transaction has multiple element arrangements (for example, delivery of multiple products, services or the rights to use assets) the disclosure may indicate the accounting policy for each unit of accounting as well as how units of accounting are determined and valued. The disclosure may encompass important judgment as to appropriateness of principles related to recognition of revenue. The disclosure also may indicate the entity's treatment of any unearned or deferred revenue that arises from the transaction.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 13 -Section B -Paragraph Question 1 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Principles Board Opinion (APB) -Number 22 -Paragraph 8, 12, 13 falsefalseRevenue Recognition6false0us-gaap_OtherIncomeAndOtherExpenseDisclosureTextBlockus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1falsefalsefalse00<div> <div class="MetaData"> Other Income (Expense), Net   "Other income (expense), net" in Corning's consolidated statements of income includes the following (in millions): <table style="border-collapse: collapse; font-family: 'Times New Roman','serif'; margin-left: 5.4pt; font-size: 10pt;" class="MsoNormalTable" border="0" cellspacing="0" cellpadding="0"> <tr><td> </td> <td> </td> <td> </td> <td> </td> <td> </td> <td> </td> <td> </td> <td> </td> <td> </td></tr> <tr><td style="padding-bottom: 0in; padding-left: 5.4pt; width: 357.2pt; padding-right: 5.4pt; border-top: windowtext 2.25pt solid; padding-top: 0in;" valign="bottom" width="476">  </td> <td style="border-bottom: windowtext 1pt solid; padding-bottom: 0in; padding-left: 5.4pt; width: 173.8pt; padding-right: 5.4pt; border-top: windowtext 2.25pt solid; padding-top: 0in;" valign="bottom" width="232" colspan="8"> Years ended December 31,</td></tr> <tr><td style="border-bottom: windowtext 1pt solid; padding-bottom: 0in; padding-left: 5.4pt; width: 357.2pt; padding-right: 5.4pt; padding-top: 0in;" valign="bottom" width="476">  </td> <td style="border-bottom: windowtext 1pt solid; padding-bottom: 0in; padding-left: 5.4pt; width: 47.8pt; padding-right: 5.4pt; padding-top: 0in;" valign="bottom" width="64" colspan="2"> 2010</td> <td style="border-bottom: windowtext 1pt solid; padding-bottom: 0in; padding-left: 5.4pt; width: 15.2pt; padding-right: 5.4pt; border-top: windowtext 1pt solid; padding-top: 0in;" valign="bottom" width="20">  </td> <td style="border-bottom: windowtext 1pt solid; padding-bottom: 0in; padding-left: 5.4pt; width: 47.8pt; padding-right: 5.4pt; border-top: windowtext 1pt solid; padding-top: 0in;" valign="bottom" width="64" colspan="2"> 2009</td> <td style="border-bottom: windowtext 1pt solid; padding-bottom: 0in; padding-left: 5.4pt; width: 15.35pt; padding-right: 5.4pt; border-top: windowtext 1pt solid; padding-top: 0in;" valign="bottom" width="20">  </td> <td style="border-bottom: windowtext 1pt solid; padding-bottom: 0in; padding-left: 5.4pt; width: 47.65pt; padding-right: 5.4pt; border-top: windowtext 1pt solid; padding-top: 0in;" valign="bottom" width="64" colspan="2"> 2008</td></tr> <tr><td style="padding-bottom: 0in; padding-left: 5.4pt; width: 357.2pt; padding-right: 5.4pt; padding-top: 0in;" valign="bottom" width="476">  </td> <td style="padding-bottom: 0in; padding-left: 5.4pt; width: 11.8pt; padding-right: 5.4pt; padding-top: 0in;" valign="bottom" width="16">  </td> <td style="padding-bottom: 0in; padding-left: 5.4pt; width: 0.5in; padding-right: 5.4pt; padding-top: 0in;" valign="bottom" width="48">  </td> <td style="padding-bottom: 0in; padding-left: 5.4pt; width: 15.2pt; padding-right: 5.4pt; padding-top: 0in;" valign="bottom" width="20">  </td> <td style="padding-bottom: 0in; padding-left: 5.4pt; width: 11.8pt; padding-right: 5.4pt; padding-top: 0in;" valign="bottom" width="16">  </td> <td style="padding-bottom: 0in; padding-left: 5.4pt; width: 0.5in; padding-right: 5.4pt; padding-top: 0in;" valign="bottom" width="48">  </td> <td style="padding-bottom: 0in; padding-left: 5.4pt; width: 15.35pt; padding-right: 5.4pt; padding-top: 0in;" valign="bottom" width="20">  </td> <td style="padding-bottom: 0in; padding-left: 5.4pt; width: 11.8pt; padding-right: 5.4pt; padding-top: 0in;" valign="bottom" width="16">  </td> <td style="padding-bottom: 0in; padding-left: 5.4pt; width: 35.85pt; padding-right: 5.4pt; padding-top: 0in;" valign="bottom" width="48">  </td></tr> <tr><td style="padding-bottom: 0in; padding-left: 5.4pt; width: 357.2pt; padding-right: 5.4pt; padding-top: 0in;" valign="bottom" width="476"> Royalty income from Samsung Corning Precision</td> <td style="padding-bottom: 0in; padding-left: 5.4pt; width: 11.8pt; padding-right: 5.4pt; padding-top: 0in;" valign="bottom" width="16"> $</td> <td style="padding-bottom: 0in; padding-left: 5.4pt; width: 0.5in; padding-right: 5.4pt; padding-top: 0in;" valign="bottom" width="48"> 265 </td> <td style="padding-bottom: 0in; padding-left: 5.4pt; width: 15.2pt; padding-right: 5.4pt; padding-top: 0in;" valign="bottom" width="20">  </td> <td style="padding-bottom: 0in; padding-left: 5.4pt; width: 11.8pt; padding-right: 5.4pt; padding-top: 0in;" valign="bottom" width="16"> $</td> <td style="padding-bottom: 0in; padding-left: 5.4pt; width: 0.5in; padding-right: 5.4pt; padding-top: 0in;" valign="bottom" width="48"> 232 </td> <td style="padding-bottom: 0in; padding-left: 5.4pt; width: 15.35pt; padding-right: 5.4pt; padding-top: 0in;" valign="bottom" width="20">  </td> <td style="padding-bottom: 0in; padding-left: 5.4pt; width: 11.8pt; padding-right: 5.4pt; padding-top: 0in;" valign="bottom" width="16"> $</td> <td style="padding-bottom: 0in; padding-left: 5.4pt; width: 35.85pt; padding-right: 5.4pt; padding-top: 0in;" valign="bottom" width="48"> 184 </td></tr> <tr><td style="padding-bottom: 0in; padding-left: 5.4pt; width: 357.2pt; padding-right: 5.4pt; padding-top: 0in;" valign="bottom" width="476"> Foreign currency transaction and hedge losses, net</td> <td style="padding-bottom: 0in; padding-left: 5.4pt; width: 11.8pt; padding-right: 5.4pt; padding-top: 0in;" valign="bottom" width="16">  </td> <td style="padding-bottom: 0in; padding-left: 5.4pt; width: 0.5in; padding-right: 5.4pt; padding-top: 0in;" valign="bottom" width="48"> (22)</td> <td style="padding-bottom: 0in; padding-left: 5.4pt; width: 15.2pt; padding-right: 5.4pt; padding-top: 0in;" valign="bottom" width="20">  </td> <td style="padding-bottom: 0in; padding-left: 5.4pt; width: 11.8pt; padding-right: 5.4pt; padding-top: 0in;" valign="bottom" width="16">  </td> <td style="padding-bottom: 0in; padding-left: 5.4pt; width: 0.5in; padding-right: 5.4pt; padding-top: 0in;" valign="bottom" width="48"> (54)</td> <td style="padding-bottom: 0in; padding-left: 5.4pt; width: 15.35pt; padding-right: 5.4pt; padding-top: 0in;" valign="bottom" width="20">  </td> <td style="padding-bottom: 0in; padding-left: 5.4pt; width: 11.8pt; padding-right: 5.4pt; padding-top: 0in;" valign="bottom" width="16">  </td> <td style="padding-bottom: 0in; padding-left: 5.4pt; width: 35.85pt; padding-right: 5.4pt; padding-top: 0in;" valign="bottom" width="48"> (112)</td></tr> <tr><td style="padding-bottom: 0in; padding-left: 5.4pt; width: 357.2pt; padding-right: 5.4pt; padding-top: 0in;" valign="bottom" width="476"> Loss on retirement of debt</td> <td style="padding-bottom: 0in; padding-left: 5.4pt; width: 11.8pt; padding-right: 5.4pt; padding-top: 0in;" valign="bottom" width="16">  </td> <td style="padding-bottom: 0in; padding-left: 5.4pt; width: 0.5in; padding-right: 5.4pt; padding-top: 0in;" valign="bottom" width="48"> (30)</td> <td style="padding-bottom: 0in; padding-left: 5.4pt; width: 15.2pt; padding-right: 5.4pt; padding-top: 0in;" valign="bottom" width="20">  </td> <td style="padding-bottom: 0in; padding-left: 5.4pt; width: 11.8pt; padding-right: 5.4pt; padding-top: 0in;" valign="bottom" width="16">  </td> <td style="padding-bottom: 0in; padding-left: 5.4pt; width: 0.5in; padding-right: 5.4pt; padding-top: 0in;" valign="bottom" width="48">  </td> <td style="padding-bottom: 0in; padding-left: 5.4pt; width: 15.35pt; padding-right: 5.4pt; padding-top: 0in;" valign="bottom" width="20">  </td> <td style="padding-bottom: 0in; padding-left: 5.4pt; width: 11.8pt; padding-right: 5.4pt; padding-top: 0in;" valign="bottom" width="16">  </td> <td style="padding-bottom: 0in; padding-left: 5.4pt; width: 35.85pt; padding-right: 5.4pt; padding-top: 0in;" valign="bottom" width="48">  </td></tr> <tr><td style="padding-bottom: 0in; padding-left: 5.4pt; width: 357.2pt; padding-right: 5.4pt; padding-top: 0in;" valign="bottom" width="476"> Net realized losses of available-for-sale securities</td> <td style="padding-bottom: 0in; padding-left: 5.4pt; width: 11.8pt; padding-right: 5.4pt; padding-top: 0in;" valign="bottom" width="16">  </td> <td style="padding-bottom: 0in; padding-left: 5.4pt; width: 0.5in; padding-right: 5.4pt; padding-top: 0in;" valign="bottom" width="48"> (2)</td> <td style="padding-bottom: 0in; padding-left: 5.4pt; width: 15.2pt; padding-right: 5.4pt; padding-top: 0in;" valign="bottom" width="20">  </td> <td style="padding-bottom: 0in; padding-left: 5.4pt; width: 11.8pt; padding-right: 5.4pt; padding-top: 0in;" valign="bottom" width="16">  </td> <td style="padding-bottom: 0in; padding-left: 5.4pt; width: 0.5in; padding-right: 5.4pt; padding-top: 0in;" valign="bottom" width="48"> (2)</td> <td style="padding-bottom: 0in; padding-left: 5.4pt; width: 15.35pt; padding-right: 5.4pt; padding-top: 0in;" valign="bottom" width="20">  </td> <td style="padding-bottom: 0in; padding-left: 5.4pt; width: 11.8pt; padding-right: 5.4pt; padding-top: 0in;" valign="bottom" width="16">  </td> <td style="padding-bottom: 0in; padding-left: 5.4pt; width: 35.85pt; padding-right: 5.4pt; padding-top: 0in;" valign="bottom" width="48"> (53)</td></tr> <tr><td style="padding-bottom: 0in; padding-left: 5.4pt; width: 357.2pt; padding-right: 5.4pt; padding-top: 0in;" valign="bottom" width="476"> Loss on sale of Steuben glass business</td> <td style="padding-bottom: 0in; padding-left: 5.4pt; width: 11.8pt; padding-right: 5.4pt; padding-top: 0in;" valign="bottom" width="16">  </td> <td style="padding-bottom: 0in; padding-left: 5.4pt; width: 0.5in; padding-right: 5.4pt; padding-top: 0in;" valign="bottom" width="48">  </td> <td style="padding-bottom: 0in; padding-left: 5.4pt; width: 15.2pt; padding-right: 5.4pt; padding-top: 0in;" valign="bottom" width="20">  </td> <td style="padding-bottom: 0in; padding-left: 5.4pt; width: 11.8pt; padding-right: 5.4pt; padding-top: 0in;" valign="bottom" width="16">  </td> <td style="padding-bottom: 0in; padding-left: 5.4pt; width: 0.5in; padding-right: 5.4pt; padding-top: 0in;" valign="bottom" width="48">  </td> <td style="padding-bottom: 0in; padding-left: 5.4pt; width: 15.35pt; padding-right: 5.4pt; padding-top: 0in;" valign="bottom" width="20">  </td> <td style="padding-bottom: 0in; padding-left: 5.4pt; width: 11.8pt; padding-right: 5.4pt; padding-top: 0in;" valign="bottom" width="16">  </td> <td style="padding-bottom: 0in; padding-left: 5.4pt; width: 35.85pt; padding-right: 5.4pt; padding-top: 0in;" valign="bottom" width="48"> (14)</td></tr> <tr><td style="padding-bottom: 0in; padding-left: 5.4pt; width: 357.2pt; padding-right: 5.4pt; padding-top: 0in;" valign="bottom" width="476"> Net loss (income) attributable to noncontrolling interests</td> <td style="padding-bottom: 0in; padding-left: 5.4pt; width: 11.8pt; padding-right: 5.4pt; padding-top: 0in;" valign="bottom" width="16">  </td> <td style="padding-bottom: 0in; padding-left: 5.4pt; width: 0.5in; padding-right: 5.4pt; padding-top: 0in;" valign="bottom" width="48"> 2 </td> <td style="padding-bottom: 0in; padding-left: 5.4pt; width: 15.2pt; padding-right: 5.4pt; padding-top: 0in;" valign="bottom" width="20">  </td> <td style="padding-bottom: 0in; padding-left: 5.4pt; width: 11.8pt; padding-right: 5.4pt; padding-top: 0in;" valign="bottom" width="16">  </td> <td style="padding-bottom: 0in; padding-left: 5.4pt; width: 0.5in; padding-right: 5.4pt; padding-top: 0in;" valign="bottom" width="48"> (6)</td> <td style="padding-bottom: 0in; padding-left: 5.4pt; width: 15.35pt; padding-right: 5.4pt; padding-top: 0in;" valign="bottom" width="20">  </td> <td style="padding-bottom: 0in; padding-left: 5.4pt; width: 11.8pt; padding-right: 5.4pt; padding-top: 0in;" valign="bottom" width="16">  </td> <td style="padding-bottom: 0in; padding-left: 5.4pt; width: 35.85pt; padding-right: 5.4pt; padding-top: 0in;" valign="bottom" width="48"> 1 </td></tr> <tr><td style="border-bottom: windowtext 1pt solid; padding-bottom: 0in; padding-left: 5.4pt; width: 357.2pt; padding-right: 5.4pt; padding-top: 0in;" valign="bottom" width="476"> Other, net</td> <td style="border-bottom: windowtext 1pt solid; padding-bottom: 0in; padding-left: 5.4pt; width: 11.8pt; padding-right: 5.4pt; padding-top: 0in;" valign="bottom" width="16">  </td> <td style="border-bottom: windowtext 1pt solid; padding-bottom: 0in; padding-left: 5.4pt; width: 0.5in; padding-right: 5.4pt; padding-top: 0in;" valign="bottom" width="48"> (29)</td> <td style="border-bottom: windowtext 1pt solid; padding-bottom: 0in; padding-left: 5.4pt; width: 15.2pt; padding-right: 5.4pt; padding-top: 0in;" valign="bottom" width="20">  </td> <td style="border-bottom: windowtext 1pt solid; padding-bottom: 0in; padding-left: 5.4pt; width: 11.8pt; padding-right: 5.4pt; padding-top: 0in;" valign="bottom" width="16">  </td> <td style="border-bottom: windowtext 1pt solid; padding-bottom: 0in; padding-left: 5.4pt; width: 0.5in; padding-right: 5.4pt; padding-top: 0in;" valign="bottom" width="48"> 1 </td> <td style="border-bottom: windowtext 1pt solid; padding-bottom: 0in; padding-left: 5.4pt; width: 15.35pt; padding-right: 5.4pt; padding-top: 0in;" valign="bottom" width="20">  </td> <td style="border-bottom: windowtext 1pt solid; padding-bottom: 0in; padding-left: 5.4pt; width: 11.8pt; padding-right: 5.4pt; padding-top: 0in;" valign="bottom" width="16">  </td> <td style="border-bottom: windowtext 1pt solid; padding-bottom: 0in; padding-left: 5.4pt; width: 35.85pt; padding-right: 5.4pt; padding-top: 0in;" valign="bottom" width="48"> (28)</td></tr> <tr><td style="border-bottom: windowtext 2.25pt solid; padding-bottom: 0in; padding-left: 5.4pt; width: 357.2pt; padding-right: 5.4pt; padding-top: 0in;" valign="bottom" width="476"> Total</td> <td style="border-bottom: windowtext 2.25pt solid; padding-bottom: 0in; padding-left: 5.4pt; width: 11.8pt; padding-right: 5.4pt; padding-top: 0in;" valign="bottom" width="16"> $</td> <td style="border-bottom: windowtext 2.25pt solid; padding-bottom: 0in; padding-left: 5.4pt; width: 0.5in; padding-right: 5.4pt; padding-top: 0in;" valign="bottom" width="48"> 184 </td> <td style="border-bottom: windowtext 2.25pt solid; padding-bottom: 0in; padding-left: 5.4pt; width: 15.2pt; padding-right: 5.4pt; padding-top: 0in;" valign="bottom" width="20">  </td> <td style="border-bottom: windowtext 2.25pt solid; padding-bottom: 0in; padding-left: 5.4pt; width: 11.8pt; padding-right: 5.4pt; padding-top: 0in;" valign="bottom" width="16"> $</td> <td style="border-bottom: windowtext 2.25pt solid; padding-bottom: 0in; padding-left: 5.4pt; width: 0.5in; padding-right: 5.4pt; padding-top: 0in;" valign="bottom" width="48"> 171 </td> <td style="border-bottom: windowtext 2.25pt solid; padding-bottom: 0in; padding-left: 5.4pt; width: 15.35pt; padding-right: 5.4pt; padding-top: 0in;" valign="bottom" width="20">  </td> <td style="border-bottom: windowtext 2.25pt solid; padding-bottom: 0in; padding-left: 5.4pt; width: 11.8pt; padding-right: 5.4pt; padding-top: 0in;" valign="bottom" width="16"> $</td> <td style="border-bottom: windowtext 2.25pt solid; padding-bottom: 0in; padding-left: 5.4pt; width: 35.85pt; padding-right: 5.4pt; padding-top: 0in;" valign="bottom" width="48"> (22)</td></tr></table></div> </div>Other Income (Expense), Net   "Other income (expense), net" in Corning's consolidated statements of income includes the following (infalsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringDiscloses other income or other expense items (both operating and nonoperating). Sources of nonoperating income or nonoperating expense that should be disclosed in this note, or in the income statement, include amounts earned from dividends, interest on securities, profits (losses) on securities, net and miscellaneous other income or income deductions.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 3, 6, 7, 9 -Article 5 falsefalseOther Income (Expense), Net7false0us-gaap_ResearchDevelopmentAndComputerSoftwarePolicyTextBlockus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1falsefalsefalse00<div> <div class="MetaData"> Research and Development Costs   Research and development costs are charged to expense as incurred.  Research and development costs totaled $491 million in 2010, $465 million in 2009, and $510 million in 2008.</div> </div>Research and Development Costs   Research and development costs are charged to expense as incurred.  Research and development costs totaled $491falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringDescribes an entity's accounting policy for its research and development and computer software activities including the accounting treatment for costs incurred for (1) research and development activities, (2) development of computer software for internal use, (3) computer software to be sold, leased or otherwise marketed as a separate product or as part of a product or process and (4) in-process research and development acquired in a purchase business combination.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 2 -Paragraph 8, 12, 13 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 86 -Paragraph 3-12 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name FASB Interpretation (FIN) -Number 4 -Paragraph 4, 5 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Statement of Position (SOP) -Number 98-1 -Paragraph 12, 17-38, 41 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Emerging Issues Task Force (EITF) -Number 00-2 falsefalseResearch and Development Costs8false0us-gaap_ForeignCurrencyTransactionsAndTranslationsPolicyTextBlockus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1falsefalsefalse00<div> <div class="MetaData"> Foreign Currency Translation and Transactions   The determination of the functional currency for Corning's foreign subsidiaries is made based on the appropriate economic factors.  For most foreign operations, the local currencies are generally considered to be the functional currencies.  Corning's most significant exception is our Taiwanese subsidiary, which uses the Japanese yen as its functional currency.  For all transactions denominated in a currency other than a subsidiary's functional currency, exchange rate gains and losses are included in income for the period in which the exchange rates changed.   Foreign subsidiary functional currency balance sheet accounts are translated at current exchange rates, and statement of operations accounts are translated at average exchange rates for the year.  Translation gains and losses are recorded as a separate component of accumulated other comprehensive income (loss) in shareholders' equity.  The effects of remeasuring non-functional currency assets and liabilities into the functional currency are included in current earnings, except for those related to intra-entity foreign currency transactions of a long-term investment nature which are recorded together with translation gains and losses in other comprehensive income (loss) in shareholders' equity.</div> </div>Foreign Currency Translation and Transactions   The determination of the functional currency for Corning's foreign subsidiaries is made based on thefalsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringDescribes a reporting enterprise's accounting policy for (1) transactions denominated in a currency other than the reporting enterprise's functional currency, (2) translating foreign currency financial statements that are incorporated into the financial statements of the reporting enterprise by consolidation, combination, or the equity method of accounting, and (3) remeasurement of the financial statements of a foreign reporting enterprise in a hyperinflationary economy.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 52 -Paragraph 5, 7-20, 80 falsefalseForeign Currency Translation and Transactions9false0us-gaap_CompensationRelatedCostsPolicyTextBlockus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1falsefalsefalse00<div> <div class="MetaData"> <div> Stock-Based Compensation   Corning's stock-based compensation programs include employee stock option grants, time-based restricted stock awards, time-based restricted stock units, performance based restricted stock awards, performance-based restricted stock units, and the Worldwide Employee Share Purchase Plan, as more fully described in Note 19 (Share-based Compensation).   The cost of stock-based compensation awards is equal to the fair value of the award at the date of grant and compensation expense is recognized for those awards earned over the vesting period, except as noted below.  Corning estimates the fair value of stock based awards using a multiple-point Black-Scholes option valuation model, which incorporates assumptions including expected volatility, dividend yield, risk-free rate, expected term and departure rates.   An award is considered vested when the employee's retention of the award is no longer contingent on providing subsequent service (the "non-substantive vesting period approach").  Prior to December 1, 2008, the terms and conditions of Corning's stock option agreement specified that employees continue to vest in option awards after retirement without providing any additional services.  For awards granted from January 1, 2006 to December 1, 2008, compensation cost was recognized immediately for awards granted to retirement-eligible employees.  For employees who become retirement-eligible during the vesting period, expense is recognized evenly from the grant date to the date of retirement eligibility.   On December 1, 2008, Corning amended the terms and conditions of its stock option agreement for awards to retirement-eligible employees.  Under the terms of this agreement, awards are earned ratably each month the employee provides service over the twelve months following the grant date, and the related compensation expense is recognized over this twelve month service period or over the period from the grant date to the date retirement eligibility is achieved, whichever is longer.   Corning offered a Worldwide Employee Share Purchase Plan (WESPP), under which substantially all employees could elect to have up to 10% of their annual wages withheld to purchase our common stock.  The purchase price of the stock was 85% of the end-of-quarter closing market price.  On February 3, 2010, Corning's Board of Directors approved the recommendation to terminate on-going WESPP contributions effective March 31, 2010 and the WESPP terminated in May 2010.   Refer to Note 19 (Share-based Compensation).</div></div> </div>Stock-Based Compensation   Corning's stock-based compensation programs include employee stock option grants, time-based restricted stock awards,falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringDescribes the entity's accounting policies for salaries, bonuses, incentive awards, postretirement and postemployment benefits granted to its employees, including share-based arrangements; describes its methodologies for measurement, and the bases for recognizing related assets and liabilities and recognizing and reporting compensation expense.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 123R -Paragraph 4, 9-15, A240 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 132R -Paragraph 5, 6, 7, 9, 11, 12, 13 falsefalseStock-Based Compensation10false0us-gaap_CashAndCashEquivalentsPolicyTextBlockus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1falsefalsefalse00<div> Cash and Cash Equivalents   Cash equivalents consist of highly liquid investments that are readily convertible into cash.  We consider securities with contractual maturities of three months or less, when purchased, to be cash equivalents.  The carrying amount of these securities approximates fair value because of the short-term maturity of these instruments.   Supplemental disclosure of cash flow information follows (in millions): <table style="border-collapse: collapse; font-family: 'Times New Roman','serif'; margin-left: 5.4pt; font-size: 10pt;" class="MsoNormalTable" border="0" cellspacing="0" cellpadding="0"> <tr><td style="border-bottom: medium none; border-left: medium none; padding-bottom: 0in; padding-left: 5.4pt; width: 357.2pt; padding-right: 5.4pt; border-top: windowtext 2.25pt solid; border-right: medium none; padding-top: 0in;" valign="bottom" width="476">  </td> <td style="border-bottom: windowtext 1pt solid; border-left: medium none; padding-bottom: 0in; padding-left: 5.4pt; width: 173.8pt; padding-right: 5.4pt; border-top: windowtext 2.25pt solid; border-right: medium none; padding-top: 0in;" valign="bottom" width="232" colspan="8"> Years ended December 31,</td></tr> <tr><td style="border-bottom: windowtext 1pt solid; border-left: medium none; padding-bottom: 0in; padding-left: 5.4pt; width: 357.2pt; padding-right: 5.4pt; border-top: medium none; border-right: medium none; padding-top: 0in;" valign="bottom" width="476">  </td> <td style="border-bottom: windowtext 1pt solid; border-left: medium none; padding-bottom: 0in; padding-left: 5.4pt; width: 47.8pt; padding-right: 5.4pt; border-top: medium none; border-right: medium none; padding-top: 0in;" valign="bottom" width="64" colspan="2"> 2010</td> <td style="border-bottom: windowtext 1pt solid; border-left: medium none; padding-bottom: 0in; padding-left: 5.4pt; width: 15.2pt; padding-right: 5.4pt; border-top: windowtext 1pt solid; border-right: medium none; padding-top: 0in;" valign="bottom" width="20">  </td> <td style="border-bottom: windowtext 1pt solid; border-left: medium none; padding-bottom: 0in; padding-left: 5.4pt; width: 47.8pt; padding-right: 5.4pt; border-top: windowtext 1pt solid; border-right: medium none; padding-top: 0in;" valign="bottom" width="64" colspan="2"> 2009</td> <td style="border-bottom: windowtext 1pt solid; border-left: medium none; padding-bottom: 0in; padding-left: 5.4pt; width: 15.3pt; padding-right: 5.4pt; border-top: windowtext 1pt solid; border-right: medium none; padding-top: 0in;" valign="bottom" width="20">  </td> <td style="border-bottom: windowtext 1pt solid; border-left: medium none; padding-bottom: 0in; padding-left: 5.4pt; width: 47.7pt; padding-right: 5.4pt; border-top: windowtext 1pt solid; border-right: medium none; padding-top: 0in;" valign="bottom" width="64" colspan="2"> 2008</td></tr> <tr><td style="border-bottom: medium none; border-left: medium none; padding-bottom: 0in; padding-left: 5.4pt; width: 357.2pt; padding-right: 5.4pt; border-top: medium none; border-right: medium none; padding-top: 0in;" valign="bottom" width="476"> Non-cash transactions:</td> <td style="border-bottom: medium none; border-left: medium none; padding-bottom: 0in; padding-left: 5.4pt; width: 11.8pt; padding-right: 5.4pt; border-top: medium none; border-right: medium none; padding-top: 0in;" valign="bottom" width="16">  </td> <td style="border-bottom: medium none; border-left: medium none; padding-bottom: 0in; padding-left: 5.4pt; width: 0.5in; padding-right: 5.4pt; border-top: medium none; border-right: medium none; padding-top: 0in;" valign="bottom" width="48">  </td> <td style="border-bottom: medium none; border-left: medium none; padding-bottom: 0in; padding-left: 5.4pt; width: 15.2pt; padding-right: 5.4pt; border-top: medium none; border-right: medium none; padding-top: 0in;" valign="bottom" width="20">  </td> <td style="border-bottom: medium none; border-left: medium none; padding-bottom: 0in; padding-left: 5.4pt; width: 11.8pt; padding-right: 5.4pt; border-top: medium none; border-right: medium none; padding-top: 0in;" valign="bottom" width="16">  </td> <td style="border-bottom: medium none; border-left: medium none; padding-bottom: 0in; padding-left: 5.4pt; width: 0.5in; padding-right: 5.4pt; border-top: medium none; border-right: medium none; padding-top: 0in;" valign="bottom" width="48">  </td> <td style="border-bottom: medium none; border-left: medium none; padding-bottom: 0in; padding-left: 5.4pt; width: 15.3pt; padding-right: 5.4pt; border-top: medium none; border-right: medium none; padding-top: 0in;" valign="bottom" width="20">  </td> <td style="border-bottom: medium none; border-left: medium none; padding-bottom: 0in; padding-left: 5.4pt; width: 11.8pt; padding-right: 5.4pt; border-top: medium none; border-right: medium none; padding-top: 0in;" valign="bottom" width="16">  </td> <td style="border-bottom: medium none; border-left: medium none; padding-bottom: 0in; padding-left: 5.4pt; width: 35.9pt; padding-right: 5.4pt; border-top: medium none; border-right: medium none; padding-top: 0in;" valign="bottom" width="48">  </td></tr> <tr><td style="padding-bottom: 0in; padding-left: 5.4pt; width: 357.2pt; padding-right: 5.4pt; padding-top: 0in;" valign="bottom" width="476"> Issued credit memoranda for settlement of customer receivables (1)</td> <td style="padding-bottom: 0in; padding-left: 5.4pt; width: 11.8pt; padding-right: 5.4pt; padding-top: 0in;" valign="bottom" width="16"> $</td> <td style="padding-bottom: 0in; padding-left: 5.4pt; width: 0.5in; padding-right: 5.4pt; padding-top: 0in;" valign="bottom" width="48"> 83</td> <td style="padding-bottom: 0in; padding-left: 5.4pt; width: 15.2pt; padding-right: 5.4pt; padding-top: 0in;" valign="bottom" width="20">  </td> <td style="padding-bottom: 0in; padding-left: 5.4pt; width: 11.8pt; padding-right: 5.4pt; padding-top: 0in;" valign="bottom" width="16"> $</td> <td style="padding-bottom: 0in; padding-left: 5.4pt; width: 0.5in; padding-right: 5.4pt; padding-top: 0in;" valign="bottom" width="48"> 253</td> <td style="padding-bottom: 0in; padding-left: 5.4pt; width: 15.3pt; padding-right: 5.4pt; padding-top: 0in;" valign="bottom" width="20">  </td> <td style="padding-bottom: 0in; padding-left: 5.4pt; width: 11.8pt; padding-right: 5.4pt; padding-top: 0in;" valign="bottom" width="16"> $</td> <td style="padding-bottom: 0in; padding-left: 5.4pt; width: 35.9pt; padding-right: 5.4pt; padding-top: 0in;" valign="bottom" width="48"> 266</td></tr> <tr><td style="padding-bottom: 0in; padding-left: 5.4pt; width: 357.2pt; padding-right: 5.4pt; padding-top: 0in;" valign="bottom" width="476"> Capital leases</td> <td style="padding-bottom: 0in; padding-left: 5.4pt; width: 11.8pt; padding-right: 5.4pt; padding-top: 0in;" valign="bottom" width="16">  </td> <td style="padding-bottom: 0in; padding-left: 5.4pt; width: 0.5in; padding-right: 5.4pt; padding-top: 0in;" valign="bottom" width="48">  </td> <td style="padding-bottom: 0in; padding-left: 5.4pt; width: 15.2pt; padding-right: 5.4pt; padding-top: 0in;" valign="bottom" width="20">  </td> <td style="padding-bottom: 0in; padding-left: 5.4pt; width: 11.8pt; padding-right: 5.4pt; padding-top: 0in;" valign="bottom" width="16"> $</td> <td style="padding-bottom: 0in; padding-left: 5.4pt; width: 0.5in; padding-right: 5.4pt; padding-top: 0in;" valign="bottom" width="48"> 162</td> <td style="padding-bottom: 0in; padding-left: 5.4pt; width: 15.3pt; padding-right: 5.4pt; padding-top: 0in;" valign="bottom" width="20">  </td> <td style="padding-bottom: 0in; padding-left: 5.4pt; width: 11.8pt; padding-right: 5.4pt; padding-top: 0in;" valign="bottom" width="16"> $</td> <td style="padding-bottom: 0in; padding-left: 5.4pt; width: 35.9pt; padding-right: 5.4pt; padding-top: 0in;" valign="bottom" width="48"> 6</td></tr> <tr><td style="padding-bottom: 0in; padding-left: 5.4pt; width: 357.2pt; padding-right: 5.4pt; padding-top: 0in;" valign="bottom" width="476"> Accruals for capital expenditures</td> <td style="padding-bottom: 0in; padding-left: 5.4pt; width: 11.8pt; padding-right: 5.4pt; padding-top: 0in;" valign="bottom" width="16"> $</td> <td style="padding-bottom: 0in; padding-left: 5.4pt; width: 0.5in; padding-right: 5.4pt; padding-top: 0in;" valign="bottom" width="48"> 382</td> <td style="padding-bottom: 0in; padding-left: 5.4pt; width: 15.2pt; padding-right: 5.4pt; padding-top: 0in;" valign="bottom" width="20">  </td> <td style="padding-bottom: 0in; padding-left: 5.4pt; width: 11.8pt; padding-right: 5.4pt; padding-top: 0in;" valign="bottom" width="16"> $</td> <td style="padding-bottom: 0in; padding-left: 5.4pt; width: 0.5in; padding-right: 5.4pt; padding-top: 0in;" valign="bottom" width="48"> 217</td> <td style="padding-bottom: 0in; padding-left: 5.4pt; width: 15.3pt; padding-right: 5.4pt; padding-top: 0in;" valign="bottom" width="20">  </td> <td style="padding-bottom: 0in; padding-left: 5.4pt; width: 11.8pt; padding-right: 5.4pt; padding-top: 0in;" valign="bottom" width="16"> $</td> <td style="padding-bottom: 0in; padding-left: 5.4pt; width: 35.9pt; padding-right: 5.4pt; padding-top: 0in;" valign="bottom" width="48"> 525</td></tr> <tr><td style="padding-bottom: 0in; padding-left: 5.4pt; width: 357.2pt; padding-right: 5.4pt; padding-top: 0in;" valign="bottom" width="476"> Cash paid for interest and income taxes:</td> <td style="padding-bottom: 0in; padding-left: 5.4pt; width: 11.8pt; padding-right: 5.4pt; padding-top: 0in;" valign="bottom" width="16">  </td> <td style="padding-bottom: 0in; padding-left: 5.4pt; width: 0.5in; padding-right: 5.4pt; padding-top: 0in;" valign="bottom" width="48">  </td> <td style="padding-bottom: 0in; padding-left: 5.4pt; width: 15.2pt; padding-right: 5.4pt; padding-top: 0in;" valign="bottom" width="20">  </td> <td style="padding-bottom: 0in; padding-left: 5.4pt; width: 11.8pt; padding-right: 5.4pt; padding-top: 0in;" valign="bottom" width="16">  </td> <td style="padding-bottom: 0in; padding-left: 5.4pt; width: 0.5in; padding-right: 5.4pt; padding-top: 0in;" valign="bottom" width="48">  </td> <td style="padding-bottom: 0in; padding-left: 5.4pt; width: 15.3pt; padding-right: 5.4pt; padding-top: 0in;" valign="bottom" width="20">  </td> <td style="padding-bottom: 0in; padding-left: 5.4pt; width: 11.8pt; padding-right: 5.4pt; padding-top: 0in;" valign="bottom" width="16">  </td> <td style="padding-bottom: 0in; padding-left: 5.4pt; width: 35.9pt; padding-right: 5.4pt; padding-top: 0in;" valign="bottom" width="48">  </td></tr> <tr><td style="padding-bottom: 0in; padding-left: 5.4pt; width: 357.2pt; padding-right: 5.4pt; padding-top: 0in;" valign="bottom" width="476"> Interest (2) </td> <td style="padding-bottom: 0in; padding-left: 5.4pt; width: 11.8pt; padding-right: 5.4pt; padding-top: 0in;" valign="bottom" width="16"> $</td> <td style="padding-bottom: 0in; padding-left: 5.4pt; width: 0.5in; padding-right: 5.4pt; padding-top: 0in;" valign="bottom" width="48"> 125</td> <td style="padding-bottom: 0in; padding-left: 5.4pt; width: 15.2pt; padding-right: 5.4pt; padding-top: 0in;" valign="bottom" width="20">  </td> <td style="padding-bottom: 0in; padding-left: 5.4pt; width: 11.8pt; padding-right: 5.4pt; padding-top: 0in;" valign="bottom" width="16"> $</td> <td style="padding-bottom: 0in; padding-left: 5.4pt; width: 0.5in; padding-right: 5.4pt; padding-top: 0in;" valign="bottom" width="48"> 116</td> <td style="padding-bottom: 0in; padding-left: 5.4pt; width: 15.3pt; padding-right: 5.4pt; padding-top: 0in;" valign="bottom" width="20">  </td> <td style="padding-bottom: 0in; padding-left: 5.4pt; width: 11.8pt; padding-right: 5.4pt; padding-top: 0in;" valign="bottom" width="16"> $</td> <td style="padding-bottom: 0in; padding-left: 5.4pt; width: 35.9pt; padding-right: 5.4pt; padding-top: 0in;" valign="bottom" width="48"> 100</td></tr> <tr><td style="border-bottom: windowtext 2.25pt solid; border-left: medium none; padding-bottom: 0in; padding-left: 5.4pt; width: 357.2pt; padding-right: 5.4pt; border-top: medium none; border-right: medium none; padding-top: 0in;" valign="bottom" width="476"> Income taxes, net of refunds received</td> <td style="border-bottom: windowtext 2.25pt solid; border-left: medium none; padding-bottom: 0in; padding-left: 5.4pt; width: 11.8pt; padding-right: 5.4pt; border-top: medium none; border-right: medium none; padding-top: 0in;" valign="bottom" width="16"> $</td> <td style="border-bottom: windowtext 2.25pt solid; border-left: medium none; padding-bottom: 0in; padding-left: 5.4pt; width: 0.5in; padding-right: 5.4pt; border-top: medium none; border-right: medium none; padding-top: 0in;" valign="bottom" width="48"> 170</td> <td style="border-bottom: windowtext 2.25pt solid; border-left: medium none; padding-bottom: 0in; padding-left: 5.4pt; width: 15.2pt; padding-right: 5.4pt; border-top: medium none; border-right: medium none; padding-top: 0in;" valign="bottom" width="20">  </td> <td style="border-bottom: windowtext 2.25pt solid; border-left: medium none; padding-bottom: 0in; padding-left: 5.4pt; width: 11.8pt; padding-right: 5.4pt; border-top: medium none; border-right: medium none; padding-top: 0in;" valign="bottom" width="16"> $</td> <td style="border-bottom: windowtext 2.25pt solid; border-left: medium none; padding-bottom: 0in; padding-left: 5.4pt; width: 0.5in; padding-right: 5.4pt; border-top: medium none; border-right: medium none; padding-top: 0in;" valign="bottom" width="48"> 164</td> <td style="border-bottom: windowtext 2.25pt solid; border-left: medium none; padding-bottom: 0in; padding-left: 5.4pt; width: 15.3pt; padding-right: 5.4pt; border-top: medium none; border-right: medium none; padding-top: 0in;" valign="bottom" width="20">  </td> <td style="border-bottom: windowtext 2.25pt solid; border-left: medium none; padding-bottom: 0in; padding-left: 5.4pt; width: 11.8pt; padding-right: 5.4pt; border-top: medium none; border-right: medium none; padding-top: 0in;" valign="bottom" width="16"> $</td> <td style="border-bottom: windowtext 2.25pt solid; border-left: medium none; padding-bottom: 0in; padding-left: 5.4pt; width: 35.9pt; padding-right: 5.4pt; border-top: medium none; border-right: medium none; padding-top: 0in;" valign="bottom" width="48"> 287</td></tr></table>   (1)   Amounts represent credits applied to customer receivable balances for customers that made advance cash deposits under long-term purchase and supply agreements. (2)   Included in this amount are approximately $20 million, $29 million, and $31 million of interest costs that were capitalized as part of property, net in 2010, 2009 and 2008, respectively. </div>Cash and Cash Equivalents   Cash equivalents consist of highly liquid investments that are readily convertible into cash.  We consider securitiesfalsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringA description of a company's cash and cash equivalents accounting policy. An entity shall disclose its policy for determining which items are treated as cash equivalents. Other information that may be disclosed includes (1) the nature of any restrictions on the entity's use of its cash and cash equivalents, (2) whether the entity's cash and cash equivalents are insured or expose the entity to credit risk, (3) the classification of any negative balance accounts (overdrafts), and (4) the carrying basis of cash equivalents (for example, at cost) and whether the carrying amount of cash equivalents approximates fair value. Cash includes currency on hand as well as demand deposits with banks or financial institutions. It also includes other kinds of accounts that have the general characteristics of demand deposits in that the customer may deposit additional funds at any time and also effectively may withdraw funds at any time without prior notice or penalty. In addition, cash equivalents include short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Generally, only investments with original maturities of three months or less qualify under that definition. Original maturity means original maturity to the entity holding the investment. For example, both a three-month US Treasury bill and a three-year Treasury note purchased three months from maturity qualify as cash equivalents. However, a Treasury note purchased three-years ago does not become a cash equivalent when its remaining maturity is three months. For a bank, may include explanation and amount of requirement to maintain reserves against deposits.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Financial Reporting Release (FRR) -Number 203 -Paragraph 02-03 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 1 -Article 5 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 7, 8, 9, 10 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Technical Practice Aid (TPA) -Number 2110 -Paragraph 6 falsefalseCash and Cash Equivalents11false0us-gaap_InvestmentPolicyTextBlockus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1falsefalsefalse00<div> <div class="MetaData"> Short-Term Investments   Our short-term investments consist of available-for-sale securities that are stated at fair value.  Consistent with Corning's cash investment policy, our short-term investments consist primarily of fixed-income securities.  Preservation of principal is the primary principle of our cash investment policy that is carried out by limiting interest rate, reinvestment, security, quality and event risk.  Our investments are generally liquid and all are investment grade quality.  The portfolio is invested predominantly in U.S. Treasury securities and high quality short term government security money market funds.  Unrealized gains and losses, net of tax, are computed on the first-in first-out basis and are reported as a separate component of accumulated other comprehensive loss in shareholders' equity until realized.  Realized gains and losses are recorded in other income (expense), net.</div> </div>Short-Term Investments   Our short-term investments consist of available-for-sale securities that are stated at fair value.  Consistent withfalsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringDescribes an entity's accounting policies for investments in financial assets, including marketable securities (debt and equity securities with readily determinable fair values), investments accounted for under the equity method and cost method, securities borrowed and loaned, and repurchase and resale agreements. For marketable securities, the description may include the entity's accounting treatment for transfers between investment categories and how the fair values for such securities are determined. Also, for all investments, an entity may describe its policy for assessing, recognizing and measuring impairment of the investment.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 115 -Paragraph 7-16 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 2, 12 -Article 5 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 5 -Section M Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name FASB Staff Position (FSP) -Number FAS115-1/124-1 -Paragraph 7-18 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 107 -Paragraph 10, 11 falsefalseShort-Term Investments12false0us-gaap_ReceivablesPolicyTextBlockus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1falsefalsefalse00<div> <div class="MetaData"> Allowance for Doubtful Accounts   The Company's allowance for doubtful accounts is determined based on a variety of factors that affect the potential collectability of the related receivables, including length of time receivables are past due, customer credit ratings, financial stability of customers, specific one-time events and past customer history.  In addition, in circumstances where the Company is made aware of a specific customer's inability to meet its financial obligations, a specific allowance is established.  The majority of accounts are individually evaluated on a regular basis and appropriate reserves are established as deemed appropriate based on the above criteria.  The remainder of the reserve is based on management's estimates and takes into consideration the length of time receivables are past due, historical trends, market conditions, and the composition of the Company's customer base.</div> </div>Allowance for Doubtful Accounts   The Company's allowance for doubtful accounts is determined based on a variety of factors that affect the potentialfalsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringDescribes an entity's accounting policy for trade and other accounts receivable, and finance, loan and lease receivables, including those classified as held for investment and held for sale. This disclosure may include (1) the basis at which such receivables are carried in the entity's statements of financial position (2) how the level of the valuation allowance for receivables is determined (3) when impairments, charge-offs or recoveries are recognized for such receivables (4) the treatment of origination fees and costs, including the amortization method for net deferred fees or costs (5) the treatment of any premiums or discounts or unearned income (6) the entity's income recognition policies for such receivables, including those that are impaired, past due or placed on nonaccrual status and (7) the treatment of foreclosures or repossessions (8) the nature and amount of any guarantees to repurchase receivables.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 3-5 -Article 5 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 114 -Paragraph 20 -Subparagraph b Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Emerging Issues Task Force (EITF) -Number 92-5 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Statement of Position (SOP) -Number 01-6 -Paragraph 13 falsefalseAllowance for Doubtful Accounts13false0us-gaap_AssetRetirementObligationsAndEnvironmentalCostPolicyTextBlockus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1falsefalsefalse00<div> Environmental Liabilities   The Company accrues for its environmental investigation, remediation, operating, and maintenance costs when it is probable that a liability has been incurred and the amount can be reasonably estimated.  For environmental matters, the most likely cost to be incurred is accrued based on an evaluation of currently available facts with respect to each individual site, current laws and regulations and prior remediation experience.  For sites with multiple potential responsible parties, the Company considers its likely proportionate share of the anticipated remediation costs and the ability of the other parties to fulfill their obligations in establishing a provision for those costs.  Where no amount within a range of estimates is more likely to occur than another, the minimum amount is accrued.  When future liabilities are determined to be reimbursable by insurance coverage, an accrual is recorded for the potential liability and a receivable is recorded related to the insurance reimbursement when reimbursement is virtually certain.   The uncertain nature inherent in such remediation and the possibility that initial estimates may not reflect the final outcome could result in additional costs being recognized by the Company in future periods. </div>Environmental Liabilities   The Company accrues for its environmental investigation, remediation, operating, and maintenance costs when it is probablefalsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringDescribes an entity's accounting policy for (1) legal obligations associated with the disposal or removal of a long-lived asset from service that result from the acquisition, construction, or development or from the normal operation of a long-lived asset (except obligations of a lessee in connection with leased property that are minimum lease payments or contingent rentals, or obligations that arise solely from a plan to sell or otherwise dispose of a long-lived asset); and (2) certain environmental remediation liabilities that resulted from the improper or other-than-normal operation of a long-lived asset. This accounting policy may address (1) whether the related remediation costs are expensed or capitalized, (2) whether the obligation is measured on a discounted basis, (3) the event, situation, or set of circumstances that generally triggers recognition of loss contingencies arising from the entity's environmental remediation-related obligations, and (4) the timing of recognition of any recoveries.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name FASB Interpretation (FIN) -Number 47 -Paragraph 3 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 143 -Paragraph 2-3, 11-15, 22, A13 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Statement of Position (SOP) -Number 96-1 -Paragraph 99, 100, 101, 147, 148, 149, 150, 152, 153, 154 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Emerging Issues Task Force (EITF) -Number 89-13 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Emerging Issues Task Force (EITF) -Number 90-8 falsefalseEnvironmental Liabilities14false0us-gaap_InventoryPolicyTextBlockus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1falsefalsefalse00<div> Inventories   Inventories are stated at the lower of cost (first-in, first-out basis) or market. </div>Inventories   Inventories are stated at the lower of cost (first-in, first-out basis) or market.falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringDescribes an entity's accounting policies covering its major classes of inventories, bases of stating inventories (for example lower of cost or market), methods by which amounts are added and removed from inventory classes (for example FIFO, LIFO, or average cost), loss recognition on impairment of inventories, and situations in which inventories are stated above cost. If inventory is carried at cost, this description includes the nature of the cost elements included in inventory.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Financial Reporting Release (FRR) -Number 206 -Chapter 2 -Paragraph b -Subparagraph i, ii Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 43 -Chapter 4 -Paragraph 3, 5-10, 15, 16, 17 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 6 -Subparagraph a -Article 5 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 43 -Chapter 3 -Section A -Paragraph 9 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Statement of Position (SOP) -Number 81-1 -Paragraph 69-75 falsefalseInventories15false0us-gaap_PropertyPlantAndEquipmentPolicyTextBlockus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1falsefalsefalse00<div> Property, Net of Accumulated Depreciation   Land, buildings, and equipment, including precious metals, are recorded at cost.  Depreciation is based on estimated useful lives of properties using the straight-line method.  Except as described in Note 2 (Restructuring, Impairment and Other Charges and (Credits)) related to accelerated depreciation arising from restructuring programs and Note 9 (Property, Net of Accumulated Depreciation) related to the depletion of precious metals, the estimated useful lives range from 10 to 40 years for buildings and 2 to 20 years for equipment.   Included in the subcategory of equipment are the following types of assets (excluding precious metals): <table style="border-collapse: collapse; font-family: 'Times New Roman','serif'; margin-left: 5.4pt; font-size: 10pt;" class="MsoNormalTable" border="0" cellspacing="0" cellpadding="0"> <tr><td style="border-bottom: windowtext 1pt solid; border-left: medium none; padding-bottom: 0in; padding-left: 5.4pt; width: 438.25pt; padding-right: 5.4pt; border-top: windowtext 2.25pt solid; border-right: medium none; padding-top: 0in;" valign="top" width="584"> Asset type</td> <td style="border-bottom: windowtext 1pt solid; border-left: medium none; padding-bottom: 0in; padding-left: 5.4pt; width: 92.75pt; padding-right: 5.4pt; border-top: windowtext 2.25pt solid; border-right: medium none; padding-top: 0in;" valign="top" width="124"> Range of useful life</td></tr> <tr><td style="border-bottom: medium none; border-left: medium none; padding-bottom: 0in; padding-left: 5.4pt; width: 438.25pt; padding-right: 5.4pt; border-top: medium none; border-right: medium none; padding-top: 0in;" valign="top" width="584">  </td> <td style="border-bottom: medium none; border-left: medium none; padding-bottom: 0in; padding-left: 5.4pt; width: 92.75pt; padding-right: 5.4pt; border-top: medium none; border-right: medium none; padding-top: 0in;" valign="top" width="124">  </td></tr> <tr><td style="padding-bottom: 0in; padding-left: 5.4pt; width: 438.25pt; padding-right: 5.4pt; padding-top: 0in;" valign="top" width="584"> Computer hardware and software</td> <td style="padding-bottom: 0in; padding-left: 5.4pt; width: 92.75pt; padding-right: 5.4pt; padding-top: 0in;" valign="top" width="124"> 3 to 7 years</td></tr> <tr><td style="padding-bottom: 0in; padding-left: 5.4pt; width: 438.25pt; padding-right: 5.4pt; padding-top: 0in;" valign="top" width="584"> Manufacturing equipment</td> <td style="padding-bottom: 0in; padding-left: 5.4pt; width: 92.75pt; padding-right: 5.4pt; padding-top: 0in;" valign="top" width="124"> 2 to 15 years</td></tr> <tr><td style="padding-bottom: 0in; padding-left: 5.4pt; width: 438.25pt; padding-right: 5.4pt; padding-top: 0in;" valign="top" width="584"> Furniture and fixtures</td> <td style="padding-bottom: 0in; padding-left: 5.4pt; width: 92.75pt; padding-right: 5.4pt; padding-top: 0in;" valign="top" width="124"> 5 to 10 years</td></tr> <tr><td style="border-bottom: windowtext 2.25pt solid; border-left: medium none; padding-bottom: 0in; padding-left: 5.4pt; width: 438.25pt; padding-right: 5.4pt; border-top: medium none; border-right: medium none; padding-top: 0in;" valign="top" width="584"> Transportation equipment</td> <td style="border-bottom: windowtext 2.25pt solid; border-left: medium none; padding-bottom: 0in; padding-left: 5.4pt; width: 92.75pt; padding-right: 5.4pt; border-top: medium none; border-right: medium none; padding-top: 0in;" valign="top" width="124"> 5 to 20 years</td></tr></table>   Manufacturing equipment includes certain components of production equipment that are constructed of precious metals.  These assets are not depreciated because they have very low physical losses and are repeatedly reclaimed and reused in our manufacturing process over a very long useful life.  We treat the physical loss of precious metals in the manufacturing and reclamation process as depletion and account for these losses as a period expense based on actual units lost.  Precious metals are integral to many of our glass production processes.  They are only acquired to support our operations and are not held for trading or other purposes. </div>Property, Net of Accumulated Depreciation   Land, buildings, and equipment, including precious metals, are recorded at cost.  Depreciation isfalsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringDescribes an entity's accounting policy for property, plant and equipment which may include the basis of such assets, depreciation methods used and estimated useful lives, the entity's capitalization policy, including its accounting treatment for costs incurred for repairs and maintenance activities, whether such asset balances include capitalized interest and the method by which such is calculated, how disposals of such assets are accounted for and how impairment of such assets is assessed and recognized.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 43 -Chapter 9 -Section C -Paragraph 5 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 144 -Paragraph 7 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Principles Board Opinion (APB) -Number 22 -Paragraph 12, 13 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 34 -Paragraph 8, 9 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 13 -Subparagraph a -Article 5 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Principles Board Opinion (APB) -Number 12 -Paragraph 5 -Subparagraph d falsefalseProperty, Net of Accumulated Depreciation16false0us-gaap_GoodwillAndIntangibleAssetsPolicyTextBlockus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1falsefalsefalse00<div> <div class="MetaData"> Goodwill and Other Intangible Assets   Goodwill is the excess of cost of an acquired entity over the amounts assigned to assets acquired and liabilities assumed in a business combination.  Goodwill is tested for impairment annually in the fourth quarter or if an event occurs or circumstances change that indicate that the carrying amount may be impaired.  Impairment testing for goodwill is done at a reporting unit level.  Reporting units are either operating segments or one level below the operating segment.  Goodwill relates to and is assigned directly to a specific reporting unit.  An impairment loss generally would be recognized when the carrying amount of the reporting unit's net assets exceeds the estimated fair value of the reporting unit.  The estimated fair value of a reporting unit is determined using a discounted cash flow analysis.  Refer to Note 10 (Goodwill and Other Intangible Assets) for additional information.   Periodically, the detailed determination of fair value is carried forward from one year to the next if certain criteria are met.  In 2010, an assessment of all of the reporting units was performed and it was determined the criteria to carry forward the detailed determination of fair value were met.   Other intangible assets include patents, trademarks, and other intangible assets acquired from an independent party.  Such intangible assets have a definite life and are amortized on a straight-line basis over estimated useful lives ranging from 4 to 50 years.</div> </div>Goodwill and Other Intangible Assets   Goodwill is the excess of cost of an acquired entity over the amounts assigned to assets acquired andfalsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringDescribes an entity's accounting policy for goodwill and intangible assets. This accounting policy also may address how an entity assesses and measures impairment of goodwill and intangible assets.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 144 -Paragraph 7-18, 22 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 142 -Paragraph 4, 11-23, 26, 34 falsefalseGoodwill and Other Intangible Assets17false0us-gaap_ImpairmentOrDisposalOfLongLivedAssetsPolicyTextBlockus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1falsefalsefalse00<div> Impairment of Long-Lived Assets   We review the recoverability of our long-lived assets, such as plant and equipment and intangible assets, when events or changes in circumstances occur that indicate that the carrying value of the asset or asset group may not be recoverable.  When impairment indicators are present, we compare estimated undiscounted future cash flows, including the eventual disposition of the asset group at market value, to the assets' carrying value to determine if the asset group is recoverable.  The fair value of long-lived assets is determined using an "income approach" that starts with the forecast of all the expected future net cash flows including the eventual disposition at market value of long-lived assets, and also considers the fair market value of all precious metals.  We assess the recoverability of the carrying value of long-lived assets at the lowest level for which identifiable cash flows are largely independent of the cash flows of other assets and liabilities.  If there is an impairment, a loss is recorded to reflect the difference between the assets' fair value and carrying value. </div>Impairment of Long-Lived Assets   We review the recoverability of our long-lived assets, such as plant and equipment and intangible assets, when eventsfalsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringDescribes an entity's accounting policy for recognizing and measuring the impairment of long-lived assets. An entity also may disclose its accounting policy for long-lived assets to be sold. This policy excludes goodwill and intangible assets.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 5 -Section CC -Subsection 3 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 144 -Paragraph 7-15, 26, 30-37 falsefalseImpairment of Long-Lived Assets18false0glw_TreasuryStockPolicyTextBlockglwfalsenadurationDescribes an entity's accounting policy for repurchase of the Companies Common Stock and the reissue of treasury shares as...falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1falsefalsefalse00<div> <div class="MetaData"> Treasury Stock   Shares of common stock repurchased by us are recorded at cost as treasury stock and result in a reduction of shareholders' equity in the consolidated balance sheets.  From time to time, treasury shares may be reissued as contributions to our employee benefit plans and for the retirement or conversion of certain debt instruments.  When shares are reissued, we use an average cost method for determining cost.  The difference between the cost of the shares and the reissuance price is added to or deducted from additional paid-in capital.</div> </div>Treasury Stock   Shares of common stock repurchased by us are recorded at cost as treasury stock and result in a reduction of shareholders' equity infalsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringDescribes an entity's accounting policy for repurchase of the Companies Common Stock and the reissue of treasury shares as contributions to employee benefit plans and how it is recorded on the financial statements and at what value.No authoritative reference available.falsefalseTreasury Stock19false0us-gaap_IncomeTaxPolicyTextBlockus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1falsefalsefalse00<div> Income Taxes   The Company accounts for income taxes using the asset and liability method.  Under this method, deferred tax assets and liabilities are recognized for the future tax consequences attributable to operating loss and tax credit carry forwards and for differences between the carrying amounts of existing assets and liabilities and their respective tax bases.   The effective income tax rate reflects our assessment of the ultimate outcome of tax audits.  In evaluating the tax benefits associated with our various tax filing positions, we record a tax benefit for uncertain tax positions using the highest cumulative tax benefit that is more likely than not to be realized.  Adjustments are made to our liability for unrecognized tax benefits in the period in which we determine the issue is effectively settled with the tax authorities, the statute of limitations expires for the return containing the tax position or when more information becomes available.  Our liability for unrecognized tax benefits, including accrued penalties and interest, is included in other accrued liabilities and other long-term liabilities on our consolidated balance sheets and in income tax expense in our consolidated statements of earnings.   Discrete events such as audit settlements or changes in tax laws are recognized in the period in which they occur.  Valuation allowances are established when management is unable to conclude that it is more likely than not that some portion, or all, of the deferred tax asset will ultimately be realized.   The Company is subject to income taxes in the United States and in numerous foreign jurisdictions.  No provision is made for U.S. income taxes on the undistributed earnings of wholly owned foreign subsidiaries because substantially all such earnings are indefinitely reinvested in those companies.  Provision for the tax consequences of distributions, if any, from consolidated foreign subsidiaries is recorded in the year in which the earnings are no longer indefinitely reinvested in those subsidiaries. </div>Income Taxes   The Company accounts for income taxes using the asset and liability method.  Under this method, deferred tax assets and liabilitiesfalsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringDescribes an entity's accounting policy for income taxes, which may include its accounting policies for recognizing and measuring deferred tax assets and liabilities and related valuation allowances, recognizing investment tax credits, operating loss carryforwards, tax credit carryforwards, and other carryforwards, methodologies for determining its effective income tax rate and the characterization of interest and penalties in the financial statements.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Principles Board Opinion (APB) -Number 4 -Paragraph 11 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name FASB Interpretation (FIN) -Number 48 -Paragraph 20 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 109 -Paragraph 6-34, 43, 47, 49 falsefalseIncome Taxes20false0glw_EquityMethodInvestmentsPolicyTextBlockglwfalsenadurationAn entity also may describe how such investments are assessed for impairment.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1falsefalsefalse00<div> <div class="MetaData"> <div> Equity Method Investments   Our equity method investments are reviewed for impairment on a periodic basis or if an event occurs or circumstances change that indicate the carrying amount may be impaired.  This assessment is based on a review of the equity investments' performance and a review of indicators of impairment to determine if there is evidence of a loss in value of an equity investment.  Factors we consider include:   ·Absence of our ability to recover the carrying amount; ·Inability of the equity affiliate to sustain an earnings capacity which would justify the carrying amount of the investment; and ·Significant litigation, bankruptcy or other events that could impact recoverability.   For an equity investment with impairment indicators, we measure fair value on the basis of discounted cash flows or other appropriate valuation methods, depending on the nature of the company involved.  If it is probable that we will not recover the carrying amount of our investment, the impairment is considered other-than-temporary and recorded in earnings, and the equity investment balance is reduced to its fair value accordingly.  We require our equity method affiliates to provide audited financial statements.  Consequently, adjustments for asset recoverability are included in equity earnings.  We also utilize these financial statements in our recoverability assessment.</div></div> </div>Equity Method Investments   Our equity method investments are reviewed for impairment on a periodic basis or if an event occurs or circumstances changefalsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringAn entity also may describe how such investments are assessed for impairment.No authoritative reference available.falsefalseEquity Method Investments21false0glw_FairValueOfFinancialIntrumentsPolicyTextBlockglwfalsenadurationThis element represents the policy related to the fair value measurement of assets and liabilities which includes [financial]...falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1falsefalsefalse00<div> <div class="MetaData"> Fair Value of Financial Instruments   Major categories of financial assets and liabilities, including short-term investments, other assets and derivatives are measured at fair value on a recurring basis.  Certain assets and liabilities including long-lived assets, goodwill, asset retirement obligations, and cost and equity investments are measured at fair value on a nonrecurring basis.</div> </div>Fair Value of Financial Instruments   Major categories of financial assets and liabilities, including short-term investments, other assets andfalsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringThis element represents the policy related to the fair value measurement of assets and liabilities which includes [financial] instruments measured at fair value that are classified in stockholders' equity. Such assets and liabilities may be measured on a recurring or nonrecurring basis. The disclosures which may be required or desired include: (1) for assets and liabilities measured on a recurring basis, disclosure may include: (a) the fair value measurements at the reporting date; (b) the level within the fair value hierarchy in which the fair value measurements in their entirety fall, segregating fair value measurements using quoted prices in active markets for identical assets or liabilities (Level 1), significant other observable inputs (Level 2), and significant unobservable inputs (Level 3); (c) for fair value measurements using significant unobservable inputs (Level 3), a reconciliation of the beginning and ending balances, separately presenting changes during the period attributable to the following: (i) total gains or losses for the period (realized and unrealized), segregating those gains or losses included in earnings (or changes in net assets), and a description of where those gains or losses included in earnings (or changes in net assets) are reported in the statement of income (or activities); (ii) purchases, sales, issuances, and settlements (net); (iii) transfers in and transfers out of Level 3 (for example, transfers due to changes in the observability of significant inputs); (d) the amount of the total gains or losses for the period in subparagraph (c) (i) above included in earnings (or changes in net assets) that are attributable to the change in unrealized gains or losses relating to those assets and liabilities still held at the reporting date and a description of where those unrealized gains or losses are reported in the statement of income (or activities); (e) the valuation technique(s) used to measure fair value and a discussion of changes in valuation techniques, if any, during the period and (2) for assets and liabilities that are measured at fair value on a nonrecurring basis (for example, impaired assets) disclosure may include, in addition to (a) above: (a) the reasons for the fair value measurements recorded; (b) the same as (b) above; (c) for fair value measurements using significant unobservable inputs (Level 3), a description of the inputs and the information used to develop the inputs; and (d) the valuation technique(s) used to measure fair value and a discussion of changes, if any, in the valuation technique(s) used to measure similar assets and/or liabilities in prior periods.No authoritative reference available.falsefalseFair Value of Financial Intruments22false0us-gaap_DerivativesPolicyTextBlockus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1falsefalsefalse00<div> Derivative Instruments   We participate in a variety of foreign exchange forward contracts and foreign exchange option contracts entered into in connection with the management of our exposure to fluctuations in foreign exchange rates.  These financial exposures are managed in accordance with corporate policies and procedures.   All derivatives are recorded at fair value on the balance sheet.  Changes in the fair value of derivatives designated as cash flow hedges and hedges of net investments in foreign operations are not recognized in current operating results but are recorded in accumulated other comprehensive income (loss).  Amounts related to cash flow hedges are reclassified from accumulated other comprehensive income (loss) when the underlying hedged item impacts earnings.  This reclassification is recorded in the same line item of the consolidated statement of operations as where the effects of the hedged item are recorded, typically sales, royalties, or cost of sales.  Changes in the fair value of derivatives designated as fair value hedges are recorded currently in earnings offset, to the extent the derivative was effective, by the change in the fair value of the hedged item.  Changes in the fair value of derivatives not designated as hedging instruments are recorded currently in earnings in the other income line of the consolidated statement of operations.   We have issued foreign currency denominated debt that has been designated as a hedge of the net investment in a foreign operation.  The effective portion of the changes in fair value of the debt is reflected as a component of other comprehensive income (loss) as part of the foreign currency translation adjustment. </div>Derivative Instruments   We participate in a variety of foreign exchange forward contracts and foreign exchange option contracts entered into infalsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringDescribes an entity's accounting policies for its derivative instruments and hedging activities. Disclosure may include: (1) Each method used to account for derivative financial instruments and derivative commodity instruments ("derivatives"); (2) the types of derivatives accounted for under each method; (3) the criteria required to be met for each accounting method used, including a discussion of the criteria required to be met for hedge or deferral accounting and accrual or settlement accounting (for example: whether and how risk reduction, correlation, designation, and effectiveness tests are applied); (4) the accounting method used if the criteria specified for hedge accounting are not met; (5) the method used to account for termination of derivatives designated as hedges or derivatives used to affect directly or indirectly the terms, fair values, or cash flows of a designated item; (6) the method used to account for derivatives when the designated item matures, is sold, is extinguished, or is terminated. In addition, the method used to account for derivatives designated to an anticipated transaction, when the anticipated transaction is no longer likely to occur; and (7) where and when derivatives, and their related gains (losses) are reported in the statement of financial position, cash flows, and results of operations and (8) an accounting policy decision to offset fair value amounts with counterparties. An entity should also consider describing its embedded derivatives, and the method(s) used to determine the fair values of derivatives and any significant assumptions used in such valuations.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 133 -Paragraph 44 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 08 -Paragraph n -Article 4 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name FASB Interpretation (FIN) -Number 39 -Paragraph 10 falsefalseDerivative Instruments23false0glw_VariableInterestEntitiesTextBlockglwfalsenadurationDescribes an entity's accounting policy regarding its principles of consolidation for variable interest entities.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1falsefalsefalse00<div> <div class="MetaData"> <div> Variable Interest Entities   For variable interest entities, we assess the terms of our interest in each entity to determine if we are the primary beneficiary.  The primary beneficiary of a variable interest entity is the party that absorbs a majority of the entity's expected losses, receives a majority of its expected residual returns, or both, as a result of holding variable interests, which are the ownership, contractual, or other pecuniary interests in an entity that change with changes in the fair value of the entity's net assets excluding variable interests.   Corning has performed the required assessments and has identified three entities as being variable interest entities.  None of these entities are considered to be significant to Corning's consolidated statements of position.</div></div> </div>Variable Interest Entities   For variable interest entities, we assess the terms of our interest in each entity to determine if we are the primaryfalsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringDescribes an entity's accounting policy regarding its principles of consolidation for variable interest entities.No authoritative reference available.falsefalseVariable Interest Entities24false0us-gaap_ScheduleOfNewAccountingPronouncementsAndChangesInAccountingPrinciplesTextBlockus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1falsefalsefalse00<div> <div class="MetaData"> New Accounting Standards   In October 2009, the FASB issued Accounting Standards Update No. 2009-13, Revenue Recognition (Topic 605): Multiple-Deliverable Revenue Arrangements—a consensus of the FASB Emerging Issues Task Force (ASU 2009-13).  ASU 2009-13 addresses the accounting for sales arrangements that include multiple products or services by revising the criteria for when deliverables may be accounted for separately rather than as a combined unit.  Specifically, this guidance establishes a selling price hierarchy for determining the selling price of a deliverable, which is necessary to separately account for each product or service.  This hierarchy provides more options for establishing selling price than did the previous guidance.  ASU 2009-13 is required to be applied prospectively to new or materially modified revenue arrangements in fiscal years beginning on or after June 15, 2010.  Corning does not expect adoption of this standard to have a material impact on its consolidated results of operations and financial condition.   In January 2010, the FASB issued Accounting Standards Update No. 2010-06, Fair Value Measurements and Disclosures (Topic 820): Improving Disclosures about Fair Value Measurements (ASU 2010-06).  Corning adopted ASU 2010-06 effective January 1, 2010, except for the disclosures about purchases, sales, issuances, and settlements in the roll forward of activity in Level 3 fair value measurements which are deferred until fiscal years beginning after December 15, 2010.  Corning believes that the disclosures will not have a material impact on its consolidated results of operations and financial condition when updated.   In December 2010, the FASB issued Accounting Standards Update No. 2010-28, Intangibles—Goodwill and Other (Topic 350): When to Perform Step 2 of the Goodwill Impairment Test for Reporting Units with Zero or Negative Carrying Amounts (ASU 2010-28).  ASU 2010-28 modifies Step 1 of the goodwill impairment test so that for those reporting units with zero or negative carrying amounts, an entity is required to perform Step 2 of the goodwill impairment test if it is more likely than not based on an assessment of qualitative indicators that a goodwill impairment exists.  In determining whether it is more likely than not that goodwill impairment exists, an entity should consider whether there are any adverse qualitative factors indicating that an impairment may exist.  ASU 2010-28 is effective for fiscal years, and interim periods within those years, beginning after December 15, 2010.  Early adoption is not permitted. Corning does not expect adoption of this standard to have a material impact on its consolidated results of operations and financial condition.</div> </div>New Accounting Standards   In October 2009, the FASB issued Accounting Standards Update No. 2009-13, Revenue Recognition (Topic 605):falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringRepresents disclosure of any changes in an accounting principle, including a change from one generally accepted accounting principle to another generally accepted accounting principle when there are two or more generally accepted accounting principles that apply or when the accounting principle formerly used is no longer generally accepted. Also disclose any change in the method of applying an accounting principle, or any change in an accounting principle required by a new pronouncement in the unusual instance that a new pronouncement does not include specific transition provisions.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 154 -Paragraph 2, 17, 18 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Principles Board Opinion (APB) -Number 28 -Paragraph 23, 24 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 01 -Paragraph b -Subparagraph 6 -Article 10 falsefalseNew Accounting Standards123Summary of Significant Accounting Policies (Policy)UnKnownUnKnownUnKnownUnKnownfalsetrue