2.2.0.25truefalse40701 - Disclosure - Investments (Details)truefalseIn Millions, unless otherwise specifiedfalse1falsefalseUSDfalsefalse12/31/2010 USD ($) USD ($) / shares $As_Of_12_31_2010http://www.sec.gov/CIK0000024741instant2010-12-31T00:00:000001-01-01T00:00:00Unit12Standardhttp://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$2falsefalseUSDfalsefalse12/31/2009 USD ($) USD ($) / shares $As_Of_12_31_2009http://www.sec.gov/CIK0000024741instant2009-12-31T00:00:000001-01-01T00:00:00Unit12Standardhttp://www.xbrl.org/2003/iso4217USDiso42170Unit1Standardhttp://www.xbrl.org/2003/instancesharesxbrli0Unit14Dividehttp://www.xbrl.org/2003/iso4217USDiso4217http://www.xbrl.org/2003/instancesharesxbrli0Unit13Standardhttp://www.xbrl.org/2003/instancepurexbrli0USDUSD$3falsefalseUSDtruefalse{us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis} : Dow Corning Corporation [Member] 1/1/2010 - 12/31/2010 USD ($) $Duration_1_1_2010_To_12_31_20103http://www.sec.gov/CIK0000024741duration2010-01-01T00:00:002010-12-31T00:00:00falsefalseDow Corning Corporation [Member]us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxisxbrldihttp://xbrl.org/2006/xbrldiglw_DowCorningCorporationMemberus-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxisexplicitMemberUnit12Standardhttp://www.xbrl.org/2003/iso4217USDiso42170Unit13Standardhttp://www.xbrl.org/2003/instancepurexbrli0USDUSD$4falsefalseUSDtruefalse{us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis} : Dow Corning Corporation [Member] 12/31/2009 USD ($) $As_Of_12_31_200933http://www.sec.gov/CIK0000024741instant2009-12-31T00:00:000001-01-01T00:00:00falsefalseDow Corning Corporation [Member]us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxisxbrldihttp://xbrl.org/2006/xbrldiglw_DowCorningCorporationMemberus-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxisexplicitMemberUnit12Standardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$5falsefalseUSDtruefalse{us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis} : Samsung Corning Precision Materials Co., Ltd [Member] 1/1/2010 - 12/31/2010 USD ($) $Duration_1_1_2010_To_12_31_20102http://www.sec.gov/CIK0000024741duration2010-01-01T00:00:002010-12-31T00:00:00falsefalseSamsung Corning Precision Materials Co., Ltd [Member]us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxisxbrldihttp://xbrl.org/2006/xbrldiglw_SamsungCorningPrecisionGlassCoLtdMemberus-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxisexplicitMemberUnit1Standardhttp://www.xbrl.org/2003/instancesharesxbrli0Unit12Standardhttp://www.xbrl.org/2003/iso4217USDiso42170Unit13Standardhttp://www.xbrl.org/2003/instancepurexbrli0USDUSD$6falsefalseUSDtruefalse{us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis} : Samsung Corning Precision Materials Co., Ltd [Member] 12/31/2009 USD ($) $As_Of_12_31_20092http://www.sec.gov/CIK0000024741instant2009-12-31T00:00:000001-01-01T00:00:00falsefalseSamsung Corning Precision Materials Co., Ltd [Member]us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxisxbrldihttp://xbrl.org/2006/xbrldiglw_SamsungCorningPrecisionGlassCoLtdMemberus-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxisexplicitMemberUnit12Standardhttp://www.xbrl.org/2003/iso4217USDiso42170Unit13Standardhttp://www.xbrl.org/2003/instancepurexbrli0USDUSD$7falsefalseUSDtruefalse{us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis} : All Other [Member] 1/1/2010 - 12/31/2010 Duration_1_1_2010_To_12_31_201053http://www.sec.gov/CIK0000024741duration2010-01-01T00:00:002010-12-31T00:00:00falsefalseAll Other [Member]us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxisxbrldihttp://xbrl.org/2006/xbrldiglw_AllOtherMemberus-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxisexplicitMemberUnit13Standardhttp://www.xbrl.org/2003/instancepurexbrli0Unit12Standardhttp://www.xbrl.org/2003/iso4217USDiso42170$8falsefalseUSDtruefalse{us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis} : All Other [Member] 12/31/2009 USD ($) $As_Of_12_31_200915http://www.sec.gov/CIK0000024741instant2009-12-31T00:00:000001-01-01T00:00:00falsefalseAll Other [Member]us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxisxbrldihttp://xbrl.org/2006/xbrldiglw_AllOtherMemberus-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxisexplicitMemberUnit12Standardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$9falsefalseUSDtruefalse{dei_LegalEntityAxis} : All Other [Member] 1/1/2010 - 12/31/2010 USD ($) $Duration_1_1_2010_To_12_31_201052http://www.sec.gov/CIK0000024741duration2010-01-01T00:00:002010-12-31T00:00:00falsefalseAll Other [Member]dei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldiglw_AllOtherMemberdei_LegalEntityAxisexplicitMemberUnit13Standardhttp://www.xbrl.org/2003/instancepurexbrli0Unit12Standardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$2false0glw_OwnershipPercentageMaximumglwfalsenadurationThe maximum percentage of ownership of common stock or equity participation in the investee accounted for under the equity...falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsetruefalse00falsefalsefalsefalsefalse2falsetruefalse00falsefalsefalsefalsefalse3truetruefalse0.50.5[1]falsefalsefalsetruefalse4falsetruefalse00falsefalsefalsetruefalse5truetruefalse0.50.5[1]falsefalsefalsetruefalse6falsetruefalse00falsefalsefalsetruefalse7falsetruefalse00falsefalsefalsetruefalse8falsetruefalse00falsefalsefalsetruefalse9truetruefalse0.50.5[2]falsefalsefalsetruefalseOtherus-types:percentItemTypepureThe maximum percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.No authoritative reference available.falsefalseOwnership percentage, maximum3false0glw_OwnershipPercentageMinimumglwfalsenadurationOwnership Percentage Minimumfalsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1falsetruefalse00falsefalsefalsefalsefalse2falsetruefalse00falsefalsefalsefalsefalse3falsetruefalse00falsefalsefalsetruefalse4falsetruefalse00falsefalsefalsetruefalse5falsetruefalse00falsefalsefalsetruefalse6falsetruefalse00falsefalsefalsetruefalse7truetruefalse0.20.2[1]falsefalsefalsetruefalse8falsetruefalse00falsefalsefalsetruefalse9truetruefalse0.20.2[2]falsefalsefalsetruefalseOtherus-types:percentItemTypepureOwnership Percentage MinimumNo authoritative reference available.falsefalseOwnership percentage minimum4false0us-gaap_EquityMethodInvestmentsus-gaaptruedebitinstantNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truefalsefalse43690000004369falsetruefalsefalsefalse2truefalsefalse39880000003988falsetruefalsefalsefalse3truefalsefalse11860000001186falsetruefalsetruefalse4truefalsefalse992000000992falsetruefalsetruefalse5truefalsefalse29430000002943falsetruefalsetruefalse6truefalsefalse27720000002772falsetruefalsetruefalse7truefalsefalse240000000240falsetruefalsetruefalse8truefalsefalse224000000224falsetruefalsetruefalse9falsefalsefalse00falsefalsefalsetruefalseMonetaryxbrli:monetaryItemTypemonetaryThis item represents the carrying amount on the entity's balance sheet of its investment in common stock of an equity method investee. This is not an indicator of the fair value of the investment, rather it is the initial cost adjusted for the entity's share of earnings and losses of the investee, adjusted for any distributions (dividends) and other than temporary impairment losses recognized.No authoritative reference available.falsefalseEquity method investments5false0us-gaap_CostMethodInvestmentsAggregateCarryingAmountus-gaaptruedebitinstantNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1truefalsefalse30000003falsefalsefalsefalsefalse2truefalsefalse40000004falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsetruefalse4falsefalsefalse00falsefalsefalsetruefalse5falsefalsefalse00falsefalsefalsetruefalse6falsefalsefalse00falsefalsefalsetruefalse7falsefalsefalse00falsefalsefalsetruefalse8falsefalsefalse00falsefalsefalsetruefalse9falsefalsefalse00falsefalsefalsetruefalseMonetaryxbrli:monetaryItemTypemonetaryThis element represents the aggregate carrying amount of all cost-method investments held by the Company. Generally, such investments do not have readily determinable fair values and are not required to be accounted for by the equity method. The carrying amount of such securities equates to cost, adjusted for other-than-temporary impairment. The cost method and lower-of-cost or market, an adaptation of the cost method, is generally followed for most investments in noncontrolled corporations, in some corporate joint ventures, and to a lesser extent in unconsolidated subsidiaries, particularly foreign.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Emerging Issues Task Force (EITF) -Number 03-1 -Paragraph 22 -Subparagraph a Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name FASB Staff Position (FSP) -Number FAS115-1/124-1 -Paragraph 18 -Subparagraph a Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Principles Board Opinion (APB) -Number 18 -Paragraph 5 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name FASB Staff Position (FSP) -Number FAS115-1/124-1 -Paragraph 4 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name FASB Staff Position (FSP) -Number FAS115-1/124-1 -Paragraph 4 -Subparagraph c Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Principles Board Opinion (APB) -Number 18 -Paragraph 6 -Subparagraph a falsefalseOther investments6false0us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVenturesus-gaaptruedebitinstantNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1truefalsefalse43720000004372falsetruefalsefalsefalse2truefalsefalse39920000003992falsetruefalsefalsefalse3falsefalsefalse00falsefalsefalsetruefalse4falsefalsefalse00falsefalsefalsetruefalse5falsefalsefalse00falsefalsefalsetruefalse6falsefalsefalse00falsefalsefalsetruefalse7falsefalsefalse00falsefalsefalsetruefalse8falsefalsefalse00falsefalsefalsetruefalse9falsefalsefalse00falsefalsefalsetruefalseMonetaryxbrli:monetaryItemTypemonetaryTotal investments in (A) an entity in which the entity has significant influence, but does not have control, (B) subsidiaries that are not required to be consolidated and are accounted for using the equity and or cost method, and (C) an entity in which the reporting entity shares control of the entity with another party or group. Includes long-term advances receivable form a party that is affiliated with the reporting entity by means of direct or indirect ownership.No authoritative reference available.falsefalseInvestments1Amounts reflect Corning's direct ownership interests in the respective affiliated companies. Corning does not control any of such entities. 2Amounts reflect Corning's direct ownership interests in the respective affiliated companies. Corning does not control any of these entities.95Investments (Details) (USD $)MillionsUnKnownUnKnownUnKnowntruetrue