GLW


Line plots across dimensions of each concept
Line plots across concepts
Tables

Table of contents



us-gaap:CommonStockValue
us-gaap:StatementEquityComponents

us-gaap:CommonStockSharesIssued
us-gaap:StatementEquityComponents

us-gaap:PreferredStockSharesIssued

us-gaap:PreferredStockSharesAuthorized

us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding

us-gaap:WeightedAverageNumberOfSharesOutstandingBasic

us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount
us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecurities

us-gaap:EarningsPerShareBasic

us-gaap:EarningsPerShareDiluted

us-gaap:AllocatedShareBasedCompensationExpense
us-gaap:TitleOfIndividual

us-gaap:ComprehensiveIncomeNetOfTax

us-gaap:CostOfRevenue
us-gaap:ExtinguishmentOfDebt
us-gaap:GainsLossesOnExtinguishmentOfDebt

us-gaap:GrossProfit
us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest

us-gaap:IncomeTaxExpenseBenefit
us-gaap:ConsolidationItems
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:InterestAndDebtExpense
us-gaap:ConsolidationItems
us-gaap:LitigationCase, us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName
us-gaap:LitigationSettlementExpense

us-gaap:NetIncomeLoss
us-gaap:ConsolidationItems
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:NetIncomeLossAvailableToCommonStockholdersBasic

us-gaap:NetIncomeLossAvailableToCommonStockholdersDiluted

us-gaap:OperatingIncomeLoss

us-gaap:OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax

us-gaap:OtherComprehensiveIncomeLossNetOfTax
us-gaap:StatementEquityComponents

us-gaap:OtherNonoperatingIncomeExpense

us-gaap:PreferredStockDividendsIncomeStatementImpact

us-gaap:ProfitLoss
us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName
us-gaap:StatementEquityComponents

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax

us-gaap:Revenues
us-gaap:ProductOrService
us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName

us-gaap:SellingGeneralAndAdministrativeExpense

us-gaap:Assets
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:Liabilities

us-gaap:LiabilitiesAndStockholdersEquity

us-gaap:StockholdersEquity

us-gaap:AssetsCurrent
us-gaap:ConsolidationItems
us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents
dei:LegalEntity

us-gaap:AccountsReceivableNetCurrent

us-gaap:InventoryNet

us-gaap:OtherAssetsCurrent
us-gaap:ConsolidationItems
us-gaap:NoncurrentAssets
us-gaap:StatementGeographical
us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName
us-gaap:AssetsNoncurrent

us-gaap:PropertyPlantAndEquipmentGross
us-gaap:PropertyPlantAndEquipmentByType

us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment
us-gaap:PropertyPlantAndEquipmentByType

us-gaap:AmortizationOfIntangibleAssets
us-gaap:ConsolidationItems
us-gaap:Ownership

us-gaap:PropertyPlantAndEquipmentNet
us-gaap:ConsolidationItems
us-gaap:PropertyPlantAndEquipmentByType

us-gaap:LongTermInvestments
us-gaap:BalanceSheetLocation
us-gaap:BalanceSheetLocation, us-gaap:FairValueByFairValueHierarchyLevel
us-gaap:FairValueByFairValueHierarchyLevel

us-gaap:InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures
us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName

us-gaap:Goodwill
us-gaap:BusinessAcquisition
us-gaap:StatementBusinessSegments

us-gaap:IntangibleAssetsNetExcludingGoodwill

us-gaap:FiniteLivedIntangibleAssetsNet
us-gaap:FiniteLivedIntangibleAssetsByMajorClass

us-gaap:DeferredTaxAssetsLiabilitiesNet

us-gaap:OperatingLeaseRightOfUseAsset

us-gaap:OtherAssetsNoncurrent
us-gaap:ConsolidationItems
us-gaap:BalanceSheetLocation, us-gaap:FairValueByFairValueHierarchyLevel
us-gaap:EquitySecuritiesFvNi
us-gaap:FairValueByFairValueHierarchyLevel

us-gaap:AccountsPayableCurrent

us-gaap:AccruedIncomeTaxesCurrent

us-gaap:AccruedLiabilitiesCurrent

us-gaap:ContractWithCustomerLiabilityCurrent
dei:LegalEntity
us-gaap:ConsolidatedEntities
us-gaap:Ownership

us-gaap:DebtCurrent
us-gaap:ConsolidatedEntities

us-gaap:LiabilitiesCurrent

us-gaap:OperatingLeaseLiabilityCurrent

us-gaap:OtherAccruedLiabilitiesCurrent
us-gaap:DebtInstrument
us-gaap:LongTermDebt

us-gaap:LongTermDebtAndCapitalLeaseObligations

us-gaap:DeferredIncomeTaxLiabilitiesNet
us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType
us-gaap:PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent
us-gaap:RetirementPlanType

us-gaap:MinorityInterest
us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName

us-gaap:OtherLiabilitiesNoncurrent

us-gaap:OperatingLeaseLiabilityNoncurrent

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearTwo

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearThree

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFour

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFive

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive

us-gaap:OperatingLeaseLiability

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDue

us-gaap:LesseeOperatingLeaseLiabilityUndiscountedExcessAmount

us-gaap:StockholdersEquity

us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
us-gaap:StatementEquityComponents

us-gaap:CommonStockValue
us-gaap:StatementEquityComponents

us-gaap:AdditionalPaidInCapitalCommonStock

us-gaap:RetainedEarningsAccumulatedDeficit

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax

us-gaap:TreasuryStockValue
us-gaap:StatementEquityComponents

us-gaap:MinorityInterest
us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect

us-gaap:DeferredIncomeTaxExpenseBenefit

us-gaap:IncreaseDecreaseInAccountsReceivable

us-gaap:IncreaseDecreaseInInventories

us-gaap:IncreaseDecreaseInOtherOperatingCapitalNet

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetIncomeLoss
us-gaap:ConsolidationItems
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:ProfitLoss
us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName
us-gaap:StatementEquityComponents

us-gaap:ShareBasedCompensation

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:PaymentsToAcquireProductiveAssets

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:PaymentsForRepurchaseOfCommonStock
us-gaap:CounterpartyName, us-gaap:ShareRepurchaseProgram
us-gaap:CounterpartyName, us-gaap:ShareRepurchaseProgram, us-gaap:SubsequentEventType

us-gaap:EffectiveIncomeTaxRateContinuingOperations

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber
us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice
us-gaap:AwardType
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod

us-gaap:DeferredTaxLiabilities
us-gaap:BusinessAcquisition

us-gaap:DeferredTaxAssetsNet

us-gaap:UnrecognizedTaxBenefits

us-gaap:DeferredTaxAssetsValuationAllowance
us-gaap:DebtInstrument
glw:BondRedemptionGainLoss

glw:CapacityRealignment
us-gaap:IncomeStatementLocation
us-gaap:ConsolidationItems
glw:CapacityRealignmentAndOtherRestructuringCosts

glw:ChangeInAllocatedShareBasedCompensationExpense

glw:CumulativeAdjustmentRelatedToCustomerContract
us-gaap:ConsolidationItems

glw:EmployeeBenefitPaymentsLessThanInExcessOfExpense
us-gaap:BusinessAcquisition
glw:EquityInvestmentLiability
us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName
glw:EquityMethodInvestmentSummarizedFinancialInformationGainsLossOnSettlementsOfLongTermSalesAgreementsNet
us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName
glw:EquityMethodInvestmentSummarizedFinancialInformationPreTaxGainLossOnSettlementsOfLongTermSalesAgreements
us-gaap:ConsolidationItems
glw:ForeignCurrencyDebtNotIncludedInSegments

glw:ForeignCurrencyTranslationsNotIncludedInSegment
us-gaap:ConsolidationItems
glw:ForeignCurrencyTranslationsNotIncludedInSegmentNetIncome
us-gaap:LitigationCase, us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName
glw:IndemnificationOfExcessLiability
us-gaap:TitleOfIndividual
glw:LongTermIncentivePlanAnnualTargetedCompensation
us-gaap:StatementEquityComponents
glw:OtherComprehensiveIncomeLossEquityMethodInvestmentsNetOfTax
us-gaap:BusinessAcquisition
glw:PreTaxGainOnPreviouslyHeldEquityInvestment
us-gaap:ConsolidationItems
glw:ReconciliationOfOtherCorporateItems

glw:ResearchDevelopmentAndEngineeringExpenses
us-gaap:ConsolidationItems
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

glw:RevenueCurrencyAdjustment
us-gaap:IncomeStatementLocation

glw:RevenueNet

glw:SalesRevenueGoodsBeforeForeignCurrencyTranslations
us-gaap:ConsolidationItems
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

glw:SeverencePayments

glw:SharesIssuedToBenefitPlansAndForOptionExercises
us-gaap:StatementEquityComponents

glw:TaxAssessmentRefunds

glw:TranslatedEarningsContractGainLossNet
us-gaap:ConsolidationItems

glw:TranslationGainLossOnJapaneseYenDenominatedDebt

glw:UnrealizedPostretirementBenefitPlanLossesAndPriorService

us-gaap:AssetImpairmentCharges
us-gaap:ConsolidationItems
us-gaap:IncomeStatementLocation
dei:LegalEntity, us-gaap:BusinessAcquisition
us-gaap:BusinessCombinationConsiderationTransferred1
us-gaap:BusinessAcquisition
us-gaap:StatementEquityComponents
us-gaap:ConversionOfStockAmountConverted1
us-gaap:StatementEquityComponents
us-gaap:ConversionOfStockAmountIssued1
us-gaap:ConversionOfStockByUniqueDescription
us-gaap:ConversionOfStockSharesIssued1
us-gaap:CounterpartyName, us-gaap:ConversionOfStockByUniqueDescription, us-gaap:SubsequentEventType

us-gaap:ConvertiblePreferredDividendsNetOfTax
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanActuarialGainLossImmediateRecognitionAsComponentInNetPeriodicBenefitCostCredit
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanAmortizationOfGainsLosses
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanAmortizationOfPriorServiceCostCredit
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanExpectedReturnOnPlanAssets
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanInterestCost
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanNetPeriodicBenefitCost
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanRecognizedNetGainLossDueToSettlementsAndCurtailments1
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanServiceCost
us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType
us-gaap:DefinedContributionPlanEmployerDiscretionaryContributionAmount

us-gaap:Depreciation
us-gaap:ConsolidationItems
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments
us-gaap:ConsolidationItems
us-gaap:DerivativeGainLossOnDerivativeNet
us-gaap:DerivativeInstrumentRisk, us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship, us-gaap:IncomeStatementLocation
us-gaap:DerivativeInstrumentRisk, us-gaap:HedgingDesignation, us-gaap:IncomeStatementLocation
us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship
us-gaap:HedgingDesignation
us-gaap:DerivativeInstrumentRisk, us-gaap:HedgingDesignation, us-gaap:IncomeStatementLocation
us-gaap:DerivativeInstrumentsGainLossReclassifiedFromAccumulatedOCIIntoIncomeEffectivePortionNet
us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship, us-gaap:HedgingDesignation
us-gaap:HedgingDesignation
us-gaap:HedgingDesignation, us-gaap:IncomeStatementLocation

us-gaap:DividendsCommonStockCash
us-gaap:StatementEquityComponents

us-gaap:DividendsPreferredStockCash
us-gaap:StatementEquityComponents
us-gaap:DebtInstrument
us-gaap:EarlyRepaymentOfSeniorDebt

us-gaap:EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents

us-gaap:EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate

us-gaap:EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense
us-gaap:BusinessAcquisition
us-gaap:EquityMethodInvestmentRealizedGainLossOnDisposal
us-gaap:ExtinguishmentOfDebt
us-gaap:ExtinguishmentOfDebtAmount
us-gaap:DerivativeInstrumentRisk
us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInEarnings1
us-gaap:ConsolidationItems
us-gaap:ForeignCurrencyTransactionGainLossBeforeTax

us-gaap:ForeignCurrencyTransactionGainLossUnrealized

us-gaap:GainLossOnDispositionOfAssets1
us-gaap:ConsolidationItems
us-gaap:GainLossOnSaleOfBusiness
us-gaap:ConsolidationItems
us-gaap:GainLossOnSalesOfAssetsAndAssetImpairmentCharges

us-gaap:GainLossRelatedToLitigationSettlement
dei:LegalEntity, us-gaap:BusinessAcquisition
dei:LegalEntity, us-gaap:LitigationCase
us-gaap:LitigationCase
us-gaap:LitigationCase, us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName
us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName
us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName
us-gaap:GainOrLossOnSaleOfPreviouslyUnissuedStockBySubsidiary

us-gaap:GoodwillForeignCurrencyTranslationGainLoss
us-gaap:StatementBusinessSegments
us-gaap:Ownership
us-gaap:ImpairmentOfIntangibleAssetsFinitelived

us-gaap:IncomeLossFromEquityMethodInvestments
us-gaap:ConsolidationItems
us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName

us-gaap:IncreaseDecreaseInAccountsPayableAndAccruedLiabilities

us-gaap:IncreaseDecreaseInContractWithCustomerLiability

us-gaap:IncreaseDecreaseInDeferredLiabilities

us-gaap:IncreaseDecreaseInOtherCurrentAssets

us-gaap:InvestmentIncomeInterest
us-gaap:LitigationCase
us-gaap:LossContingencyAccrualPayments
dei:LegalEntity, us-gaap:CounterpartyName
us-gaap:MinorityInterestDecreaseFromRedemptions

us-gaap:NonoperatingGainsLosses

us-gaap:OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPortionAttributableToParent
us-gaap:StatementEquityComponents
us-gaap:OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax

us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeReclassificationForDiscontinuanceBeforeTax

us-gaap:OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent
us-gaap:StatementEquityComponents
us-gaap:StatementEquityComponents
us-gaap:OtherComprehensiveIncomeLossTax
us-gaap:DerivativeInstrumentRisk, us-gaap:HedgingDesignation
us-gaap:OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodBeforeTax
us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship, us-gaap:HedgingDesignation
us-gaap:HedgingDesignation

us-gaap:OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax

us-gaap:OtherRestructuringCosts
us-gaap:IncomeStatementLocation

us-gaap:PaymentsForCapitalImprovements

us-gaap:PaymentsForProceedsFromDerivativeInstrumentInvestingActivities

us-gaap:PaymentsForProceedsFromOtherInvestingActivities
us-gaap:DebtInstrument
us-gaap:PaymentsOfDebtExtinguishmentCosts
us-gaap:ExtinguishmentOfDebt

us-gaap:PaymentsOfOrdinaryDividends

us-gaap:PreferredStockRedemptionPremium
us-gaap:CounterpartyName, us-gaap:ShareRepurchaseProgram

us-gaap:ProceedsFromDepositsFromCustomers

us-gaap:ProceedsFromDerivativeInstrumentInvestingActivities

us-gaap:ProceedsFromDivestitureOfBusinessesNetOfCashDivested

us-gaap:ProceedsFromIssuanceOfUnsecuredDebt

us-gaap:ProceedsFromPaymentsForOtherFinancingActivities
us-gaap:CreditFacility
us-gaap:ProceedsFromRepaymentsOfDebt
us-gaap:DebtInstrument

us-gaap:ProceedsFromSaleOfEquitySecuritiesFvNi

us-gaap:ProceedsFromSaleOfProductiveAssets

us-gaap:ProceedsFromStockOptionsExercised
us-gaap:StatementEquityComponents
us-gaap:ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax

us-gaap:RepaymentsOfShortTermDebt
dei:LegalEntity
us-gaap:CreditFacility

us-gaap:RestructuringCharges
us-gaap:IncomeStatementLocation
us-gaap:ConsolidationItems, us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName
us-gaap:RevenueFromRelatedParties

us-gaap:SeveranceCosts1
us-gaap:ConsolidationItems
us-gaap:IncomeStatementLocation
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriod

us-gaap:StockIssuedDuringPeriodSharesStockOptionsExercised

us-gaap:StockRedeemedOrCalledDuringPeriodValue
us-gaap:StatementEquityComponents
us-gaap:CounterpartyName, us-gaap:ShareRepurchaseProgram
us-gaap:StockRepurchasedAndRetiredDuringPeriodShares
us-gaap:CounterpartyName, us-gaap:ShareRepurchaseProgram
us-gaap:StockRepurchasedAndRetiredDuringPeriodValue
us-gaap:CounterpartyName, us-gaap:ShareRepurchaseProgram, us-gaap:SubsequentEventType
us-gaap:StockRepurchasedDuringPeriodShares

us-gaap:StockholdersEquityOther
us-gaap:BusinessAcquisition, us-gaap:StatementEquityComponents
us-gaap:StatementEquityComponents
us-gaap:ShareRepurchaseProgram
us-gaap:TreasuryStockSharesAcquired

us-gaap:TreasuryStockValueAcquiredParValueMethod
us-gaap:ShareRepurchaseProgram
us-gaap:StatementEquityComponents

us-gaap:WeightedAverageNumberDilutedSharesOutstandingAdjustment
us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecurities
us-gaap:StatementClassOfStock
dei:LegalEntity, us-gaap:BusinessAcquisition
glw:BusinessAcquisitionPreacquisitionContingencyAmountOfSettlementFairValue
us-gaap:LitigationCase
glw:BusinessAcquisitionPreacquisitionContingencyEquityImpactOfSettlement
us-gaap:BusinessAcquisition
glw:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOtherCurrentAndNoncurrentAssets
dei:LegalEntity, us-gaap:BusinessAcquisition
glw:BusinessCombinationSettlement
dei:LegalEntity, us-gaap:BusinessAcquisition
glw:BusinessCombinationSettlementFairValue
us-gaap:RetirementPlanType
glw:CapOnContributionTowardFutureRetireeMedicalCoverage
us-gaap:FairValueByFairValueHierarchyLevel
glw:ContingentConsiderationAssetFairValueDisclosure
us-gaap:BalanceSheetLocation
glw:ContingentConsiderationFairValueDisclosure
us-gaap:FairValueByFairValueHierarchyLevel

glw:ContractWithCustomerLiabilityDeferredRevenue
dei:LegalEntity
us-gaap:BusinessAcquisition
us-gaap:Ownership

glw:ContractWithCustomerLiabilityDeferredRevenueCurrent
us-gaap:ConsolidatedEntities

glw:ContractWithCustomerLiabilityDeferredRevenueNoncurrent
us-gaap:ConsolidatedEntities
dei:LegalEntity, us-gaap:Range, us-gaap:MeasurementInputType
glw:CustomerDepositsMeasurementInput
us-gaap:Ownership, us-gaap:MeasurementInputType
us-gaap:Ownership, us-gaap:Range, us-gaap:MeasurementInputType
us-gaap:Range, us-gaap:BusinessAcquisition

glw:DeferredTaxAssetsLossAndTaxCreditCarryForward
us-gaap:TaxPeriod

glw:DeferredTaxAssetsOtherAssets

glw:DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAssetImpairmentsAndRestructuringReserves
us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType
glw:DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationEmployeeContributionsCreditingRate
us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName
glw:EquityMethodInvestmentSummarizedFinancialInformationLongTermDebt
us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName
glw:EquityMethodInvestmentSummarizedFinancialInformationOtherCurrentLiabilities
us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName
glw:EquityMethodInvestmentSummarizedFinancialInformationOtherLongTermLiabilities
us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName
glw:EquityMethodInvestmentSummarizedFinancialInformationShortTermBorrowingIncludingCurrentPortionOfLongTermDebt

glw:GuarantorAndContractualObligations
us-gaap:LossContingenciesByNatureOfContingency

glw:LesseeOperatingLeaseLeaseNotYetCommenced
us-gaap:CounterpartyName, us-gaap:ShareRepurchaseProgram
glw:LiabilitiesForFreestandingWrittenPutOption
us-gaap:BalanceSheetLocation, us-gaap:FairValueByFairValueHierarchyLevel
glw:LiabilitiesForPutOptionNoncurrent

glw:NoncurrentTaxDeposits
us-gaap:CounterpartyName, us-gaap:SubsequentEventType
glw:NumberOfSharesHeldByCounterParty
us-gaap:CounterpartyName, us-gaap:ShareRepurchaseProgram
glw:NumberOfSharesHeldByCounterPartySubjectToSevenYearLockupPeriod
us-gaap:CounterpartyName, us-gaap:SubsequentEventType

glw:OtherCurrentAssetsFairValueDisclosure
us-gaap:FairValueByFairValueHierarchyLevel
us-gaap:RetirementPlanType
glw:PercentageOfCostToBePaidByEmployeesForRetireeMedicalUponRetirement

glw:PreciousMetals
dei:LegalEntity, us-gaap:BusinessAcquisition
glw:SettlementAnnualPayment
us-gaap:BusinessAcquisition
us-gaap:CounterpartyName, us-gaap:ShareRepurchaseProgram
glw:ShareRepurchaseAgreementMakewholePaymentCapPercentage

glw:ShareRepurchaseLiabilityCurrent

glw:ShareRepurchaseLiabilityNoncurrent
us-gaap:EnvironmentalRemediationContingency
us-gaap:AccrualForEnvironmentalLossContingencies

us-gaap:AccruedLiabilitiesFairValueDisclosure
us-gaap:BalanceSheetLocation
us-gaap:BalanceSheetLocation, us-gaap:FairValueByFairValueHierarchyLevel
us-gaap:FairValueByFairValueHierarchyLevel

us-gaap:AccruedRentCurrent

us-gaap:AccruedRentNoncurrent

us-gaap:AllowanceForDoubtfulAccountsReceivableCurrent
us-gaap:ConsolidationItems
us-gaap:AssetsNet
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments
us-gaap:BusinessAcquisition
us-gaap:BusinessAcquisitionCostOfAcquiredEntityTransactionCosts
us-gaap:BusinessAcquisition
us-gaap:BusinessAcquisitionPercentageOfVotingInterestsAcquired
dei:LegalEntity, us-gaap:BusinessAcquisition
us-gaap:BusinessAcquisitionPreacquisitionContingencyAmountOfSettlement
us-gaap:BusinessAcquisition
us-gaap:BusinessCombinationAcquisitionOfLessThan100PercentNoncontrollingInterestFairValue
dei:LegalEntity, us-gaap:BusinessAcquisition
us-gaap:BusinessCombinationAssetsArisingFromContingenciesAmountRecognized
us-gaap:BusinessAcquisition
us-gaap:BusinessAcquisition
us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesAccountsPayable
us-gaap:BusinessAcquisition
us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesLongTermDebt
us-gaap:BusinessAcquisition
us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesOther
us-gaap:BusinessAcquisition
us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibleAssetsOtherThanGoodwill
us-gaap:BusinessAcquisition
us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedInventory
us-gaap:BusinessAcquisition
us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilities
us-gaap:BusinessAcquisition
us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNoncurrentLiabilitiesLongTermDebt
us-gaap:BusinessAcquisition
us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipment

us-gaap:ContractWithCustomerLiability
dei:LegalEntity
us-gaap:AdjustmentsForNewAccountingPronouncements
us-gaap:BalanceSheetLocation
us-gaap:BusinessAcquisition

us-gaap:ContractWithCustomerLiabilityNoncurrent
dei:LegalEntity
us-gaap:ConsolidatedEntities
us-gaap:Ownership

us-gaap:ContractualObligation
us-gaap:LossContingenciesByNatureOfContingency
us-gaap:LossContingenciesByNatureOfContingency, us-gaap:RecordedUnconditionalPurchaseObligationByCategoryOfItemPurchased
us-gaap:RecordedUnconditionalPurchaseObligationByCategoryOfItemPurchased

us-gaap:CostMethodInvestments
us-gaap:ConsolidationItems
us-gaap:FairValueByFairValueHierarchyLevel
us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName
dei:LegalEntity
us-gaap:DebtInstrumentFaceAmount
dei:LegalEntity, us-gaap:DebtInstrument
us-gaap:DebtInstrument
us-gaap:DebtInstrument, us-gaap:LongtermDebtType

us-gaap:DebtInstrumentFairValue
us-gaap:CreditFacility
us-gaap:DebtInstrument
us-gaap:DebtWeightedAverageInterestRate

us-gaap:DeferredIncomeTaxAssetsNet

us-gaap:DeferredTaxAssetsGross

us-gaap:DeferredTaxAssetsOperatingLossCarryforwards
us-gaap:TaxPeriod

us-gaap:DeferredTaxAssetsOther

us-gaap:DeferredTaxAssetsTaxCreditCarryforwards
us-gaap:TaxPeriod

us-gaap:DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsEmployeeBenefits

us-gaap:DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsPostretirementBenefits

us-gaap:DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsIntangibleAssets

us-gaap:DeferredTaxLiabilitiesLeasingArrangements

us-gaap:DeferredTaxLiabilitiesPropertyPlantAndEquipment

us-gaap:DefinedBenefitPensionPlanLiabilitiesNoncurrent
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanAccumulatedBenefitObligation
us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeBeforeTax
us-gaap:RetirementPlanType
us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetGainsLossesBeforeTax
us-gaap:RetirementPlanType
us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetPriorServiceCostCreditBeforeTax
us-gaap:RetirementPlanType
us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanAmountsRecognizedInBalanceSheet
us-gaap:RetirementPlanType
us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanAssetsForPlanBenefitsNoncurrent
us-gaap:RetirementPlanType
us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate
us-gaap:RetirementPlanType
us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationRateOfCompensationIncrease
us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationWeightedAverageInterestCreditingRate
us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanBenefitObligation
us-gaap:RetirementPlanType
us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsFiveFiscalYearsThereafter
us-gaap:RetirementPlanType
us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsNextTwelveMonths
us-gaap:RetirementPlanType
us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFive
us-gaap:RetirementPlanType
us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFour
us-gaap:RetirementPlanType
us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsYearThree
us-gaap:RetirementPlanType
us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsYearTwo
us-gaap:RetirementPlanType
us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanExpectedFutureEmployerContributionsNextFiscalYear
us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanExpectedFutureEmployerContributionsRemainderOfFiscalYear
us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanFundedStatusOfPlan
us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanHealthCareCostTrendRateAssumedNextFiscalYear

us-gaap:DefinedBenefitPlanPensionPlanWithProjectedBenefitObligationInExcessOfPlanAssetsPlanAssets

us-gaap:DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateAccumulatedBenefitObligation

us-gaap:DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateFairValueOfPlanAssets

us-gaap:DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateProjectedBenefitObligation
us-gaap:DefinedBenefitPlanByPlanAssetCategories, us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanPlanAssetsInvestmentWithinPlanAssetCategoryAmount
us-gaap:DefinedBenefitPlanByPlanAssetCategories, us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType
us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanByPlanAssetCategories
us-gaap:DefinedBenefitPlanPlanAssetsTargetAllocationPercentage
us-gaap:Range, us-gaap:DefinedBenefitPlanByPlanAssetCategories

us-gaap:DefinedBenefitPlanUltimateHealthCareCostTrendRate1

us-gaap:DerivativeAssetNotionalAmount
us-gaap:DerivativeInstrumentRisk
us-gaap:DerivativeInstrumentRisk, us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship, us-gaap:HedgingDesignation
us-gaap:DerivativeInstrumentRisk, us-gaap:HedgingDesignation
us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship

us-gaap:DerivativeAssetsCurrent

us-gaap:DerivativeAssetsNoncurrent

us-gaap:DerivativeFairValueOfDerivativeAsset
us-gaap:BalanceSheetLocation, us-gaap:DerivativeInstrumentRisk, us-gaap:HedgingDesignation

us-gaap:DerivativeFairValueOfDerivativeLiability
us-gaap:BalanceSheetLocation, us-gaap:DerivativeInstrumentRisk, us-gaap:HedgingDesignation

us-gaap:DerivativeLiabilitiesCurrent

us-gaap:DerivativeLiabilitiesNoncurrent

us-gaap:DerivativeNotionalAmount
us-gaap:DerivativeInstrumentRisk
us-gaap:DerivativeInstrumentRisk, us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship
us-gaap:DerivativeInstrumentRisk, us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship, us-gaap:HedgingDesignation
us-gaap:DerivativeInstrumentRisk, us-gaap:HedgingDesignation
us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName
us-gaap:DueFromAffiliates
us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName
us-gaap:DueToAffiliateCurrentAndNoncurrent

us-gaap:EmployeeRelatedLiabilitiesCurrent
us-gaap:AwardType
us-gaap:EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized
us-gaap:Range
us-gaap:EquityMethodInvestmentOwnershipPercentage
us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName

us-gaap:EquityMethodInvestments
us-gaap:BusinessAcquisition
us-gaap:ConsolidationItems
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments
us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName
us-gaap:Ownership, us-gaap:MeasurementInputType
us-gaap:EquitySecuritiesFvNiMeasurementInput

us-gaap:FinanceLeaseLiability
us-gaap:DebtInstrument

us-gaap:FinanceLeaseLiabilityCurrent

us-gaap:FinanceLeaseLiabilityNoncurrent

us-gaap:FinanceLeaseLiabilityPaymentsDue

us-gaap:FinanceLeaseLiabilityPaymentsDueAfterYearFive

us-gaap:FinanceLeaseLiabilityPaymentsDueNextTwelveMonths

us-gaap:FinanceLeaseLiabilityPaymentsDueYearFive

us-gaap:FinanceLeaseLiabilityPaymentsDueYearFour

us-gaap:FinanceLeaseLiabilityPaymentsDueYearThree

us-gaap:FinanceLeaseLiabilityPaymentsDueYearTwo

us-gaap:FinanceLeaseLiabilityUndiscountedExcessAmount

us-gaap:FinanceLeaseWeightedAverageDiscountRatePercent

us-gaap:FiniteLivedIntangibleAssetsAccumulatedAmortization
us-gaap:FiniteLivedIntangibleAssetsByMajorClass

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearFive

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearFour

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo

us-gaap:FiniteLivedIntangibleAssetsGross
us-gaap:FiniteLivedIntangibleAssetsByMajorClass

us-gaap:ForeignCurrencyCashFlowHedgeGainLossToBeReclassifiedDuringNext12Months
us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship

us-gaap:GoodwillGross

us-gaap:GuaranteeObligationsMaximumExposure
us-gaap:GuaranteeObligationsByNature
us-gaap:GuaranteeObligationsByNature, us-gaap:LossContingenciesByNatureOfContingency
us-gaap:LossContingenciesByNatureOfContingency
us-gaap:BusinessAcquisition
us-gaap:IncomeTaxExaminationIncreaseDecreaseInLiabilityFromPriorYear
us-gaap:TaxPeriod
us-gaap:IncomeTaxExaminationLiabilityRefundAdjustmentFromSettlementWithTaxingAuthority

us-gaap:IncomeTaxesReceivableNoncurrent
us-gaap:IncomeTaxAuthorityName
us-gaap:TaxPeriod

us-gaap:InventoryFinishedGoodsNetOfReserves

us-gaap:InventoryRawMaterialsNetOfReserves

us-gaap:InventorySuppliesNetOfReserves

us-gaap:InventoryValuationReserves

us-gaap:InventoryWorkInProcessNetOfReserves

us-gaap:InvestmentsFairValueDisclosure
us-gaap:FairValueByFairValueHierarchyLevel

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths
us-gaap:BalanceSheetLocation
us-gaap:LiabilityForUncertainTaxPositionsCurrent
us-gaap:CreditFacility
us-gaap:LineOfCredit
us-gaap:DebtInstrument

us-gaap:LongTermDebtAndCapitalLeaseObligationsCurrent

us-gaap:LongTermDebtAndCapitalLeaseObligationsIncludingCurrentMaturities

us-gaap:LongTermDebtAndCapitalLeaseObligationsMaturitiesRepaymentsOfPrincipalAfterYearFive

us-gaap:LongTermDebtAndCapitalLeaseObligationsMaturitiesRepaymentsOfPrincipalInYearFive

us-gaap:LongTermDebtAndCapitalLeaseObligationsMaturitiesRepaymentsOfPrincipalInYearFour

us-gaap:LongTermDebtAndCapitalLeaseObligationsMaturitiesRepaymentsOfPrincipalInYearThree

us-gaap:LongTermDebtAndCapitalLeaseObligationsMaturitiesRepaymentsOfPrincipalInYearTwo

us-gaap:LongTermDebtAndCapitalLeaseObligationsRepaymentsOfPrincipalInNextTwelveMonths
us-gaap:FairValueByFairValueHierarchyLevel
us-gaap:LongTermDebtFairValue
us-gaap:LitigationCase
us-gaap:LossContingencyAccrualAtCarryingValue
us-gaap:LitigationCase, us-gaap:LossContingenciesByNatureOfContingency
us-gaap:LitigationCase, us-gaap:RestructuringPlan
us-gaap:LitigationCase, us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName

us-gaap:LossContingencyAccrualCarryingValueCurrent
us-gaap:LitigationCase, us-gaap:RestructuringPlan

us-gaap:LossContingencyAccrualCarryingValueNoncurrent
us-gaap:LitigationCase, us-gaap:RestructuringPlan

us-gaap:OperatingLeaseWeightedAverageDiscountRatePercent

us-gaap:OtherAccruedLiabilitiesNoncurrent

us-gaap:OtherAssetsFairValueDisclosure
us-gaap:BalanceSheetLocation
us-gaap:BalanceSheetLocation, us-gaap:FairValueByFairValueHierarchyLevel
us-gaap:FairValueByFairValueHierarchyLevel

us-gaap:OtherAssetsMiscellaneousCurrent

us-gaap:OtherAssetsMiscellaneousNoncurrent

us-gaap:OtherLiabilitiesFairValueDisclosure
us-gaap:BalanceSheetLocation
us-gaap:BalanceSheetLocation, us-gaap:FairValueByFairValueHierarchyLevel
us-gaap:FairValueByFairValueHierarchyLevel

us-gaap:OtherPostretirementDefinedBenefitPlanLiabilitiesNoncurrent
us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType
us-gaap:PensionAndOtherPostretirementDefinedBenefitPlansCurrentLiabilities
us-gaap:RetirementPlanType
us-gaap:StatementClassOfStock
us-gaap:PreferredStockConvertibleSharesIssuable
dei:LegalEntity, us-gaap:BusinessAcquisition
us-gaap:RedeemableNoncontrollingInterestEquityRedemptionValue
us-gaap:Ownership, us-gaap:BusinessAcquisition
us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName
us-gaap:RelatedPartyTransactionDueFromToRelatedParty

us-gaap:RestructuringReserve
us-gaap:RestructuringCostAndReserve
us-gaap:RestructuringReserveCurrent
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber
us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice
us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue
us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingAggregateIntrinsicValue
us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingNumber
us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingWeightedAverageExercisePrice
us-gaap:AwardType

us-gaap:SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1
us-gaap:AwardType

us-gaap:ShortTermBorrowings
us-gaap:CreditFacility
us-gaap:ShortTermDebtType
us-gaap:CounterpartyName, us-gaap:ShareRepurchaseProgram
us-gaap:StockRepurchaseProgramRemainingNumberOfSharesAuthorizedToBeRepurchased
us-gaap:CounterpartyName, us-gaap:ShareRepurchaseProgram, us-gaap:SubsequentEventType

us-gaap:TreasuryStockShares
us-gaap:StatementEquityComponents

us-gaap:UndistributedEarningsOfForeignSubsidiaries

us-gaap:UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate
us-gaap:ValuationAllowancesAndReservesType
us-gaap:ValuationAllowancesAndReservesBalance

Plots across concepts


IncomeStatement
Other Comprehensive Income Loss Net Of Tax
Expenses
Other Nonoperating Income Expense
Balance Sheet
Operating Lease Right Of Use Asset
Assets
Operating Lease Right Of Use Asset
Current Assets
Other Assets Current
NonCurrent Assets
Long Term Investments
PropertyPlantAndEquipmentNet
Accumulated Depreciation Depletion And Amortization Property Plant And Equipment
Liabilities
Operating Lease Liability
Current Liabilities
Operating Lease Liability Current
Noncurrent Liabilities
Minority Interest
Stockholders Equity
Accumulated Other Comprehensive Income Loss Net Of Tax
CashFlow
Net Cash Provided By Used In Financing Activities
NetCashProvidedByUsedInOperatingActivities
Increase Decrease In Inventories
NetCashProvidedByUsedInInvestingActivities
Net Cash Provided By Used In Investing Activities
NetCashProvidedByUsedInFinancingActivities
Net Cash Provided By Used In Financing Activities
Shares
Weighted Average Number Of Diluted Shares Outstanding
DividendsAndRepurchase
Payments For Repurchase Of Common Stock
OperatingLeaseLiability
Operating Lease Liability Current
LesseeOperatingLeaseLiabilityPaymentsDue
Lessee Operating Lease Liability Payments Due Year Four
FiniteLivedIntangibleAssets
Finite Lived Intangible Assets Accumulated Amortization
InventoryNet
Inventory Work In Process Net Of Reserves
AccountsReceivable
Allowance For Doubtful Accounts Receivable Current

Tables

  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
us-gaap:CommonStockValue █▅▅▅▄▄▄▄▄▄▄▄▄▄▄▄▄▄▃▃▃▃▃▃▃▃▃▃▃▂▂▂▂▂▂▂▂▂▁▁▁▁▁907.0864.0863.0861.0860.0859.0859.0859.0858.0857.0857.0856.0855.0854.0854.0853.0852.0850.0846.0844.0842.0841.0840.0840.0840.0840.0836.0836.0835.0833.0831.0829.0828.0826.0825.0824.0823.0822.0818.0818.0817.0817.0813.0NANANA
us-gaap:CommonStockSharesIssued NA1729.01726.01722.01720.01719.01718.01717.01717.01715.01713.01700.01711.01709.01708.01706.01705.01700.01691.01689.0NA1682.01681.01680.01680.01679.01672.01671.01669.01667.01661.01658.01656.01653.01649.01647.01645.01644.01636.01635.01634.01633.01626.0NANANA
 us-gaap:CommonStockSharesIssued us-gaap:StatementEquityComponents us-gaap:CommonStockNANA1726.0NANANA1718.0NANANA1713.0NANANA1708.0NANANA1691.0NANANA1681.0NANANA1672.0NANANA1661.0NANANA1649.0NANANA1636.0NANANA1626.0NANANA
us-gaap:PreferredStockSharesIssued 0.0NANANA0.00230.00230.00230.00230.00230.00230.00230.00230.00230.00230.00230.00230.00230.00230.00230.00230.00230.00230.00230.00230.00230.00230.00230.00230.00230.0023NANANANANANANANANANANANANANANANA
us-gaap:PreferredStockSharesAuthorized 0.0NANANA0.00310.00310.00310.00310.00310.00310.00310.00310.00310.00310.00310.00310.00310.00310.00310.00310.00310.00310.00310.00310.00310.00310.0031NANANANANANANANANANANANANANANANANANANA
us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding ▁█844.0898.0NA889.0759.0760.0NA897.0789.0908.0NA930.0943.0848.0NA1009.01034.0936.0NA1102.01182.01103.0NA1218.01371.01394.0NA1411.01315.01370.0NA1463.01478.01481.0NA1494.00.0015181530.0NA1588.00.0015911589.0NA1580.0NANA
us-gaap:WeightedAverageNumberOfSharesOutstandingBasic █▁844.0766.0NA760.0759.0760.0NA775.0781.0784.0NA805.0819.0848.0NA883.0908.0925.0NA978.01059.01103.0NA1210.01246.01266.0NA1284.01302.01359.0NA1454.01469.01472.0NA1483.00.0015061516.0NA1569.01568.01565.0NA1557.01558.01555.0
us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount █▁33.01.0NA3.0153.0126.0NA2.0117.0NANA1.02.0126.0NA1.0NA117.0NA27.020.0162.0NA144.020.014.0NA23.0135.0138.0NA36.038.047.0NA44.042.0NANANANANANANANANA
us-gaap:EarningsPerShareBasic NANA0.290000000000000040.53-0.13-0.160.0100000000000000090.40.090.610.270.750.87-0.72-1.660.410.460.071.640.272.06-0.360.170.160.380.30.760.770.110.210.30.280.430.330.110.350.310.30.320000000000000060.520.480.480.66999999999999970.50.590.52
us-gaap:EarningsPerShareDiluted NANA0.300000000000000040.48-0.13-0.160.0400000000000000360.380.090.550.260.670.78-0.72-1.660.390.420.071.470.261.87-0.360.170.150.360.290.70.720.110.20.30.280.430.330.10.350.30.30.310000000000000050.510.470.470.65999999999999990.50.580.52
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
 Gross Margin us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName glw:AffiliatedCompaniesNANA778.078.0160.0NA942.0200.0181.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 Net profit Margin us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName glw:AffiliatedCompaniesNANA778.078.0160.0NA942.0200.0181.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
 TTM Greenblatt ROC _ _▇▇▆▄▁▁▃▅▆▆▆▇▆▄▅▆▆▆▆▇▄▄▃▆▆▆▇█▆▅▄▆▆▅▃▆▅▅▄▇▆▆█575.0502.0476.0257.0-103.0-121.0147.0365.0374.0420.0464.0522.0395.0194.0372.0453.0381.0424.0432.0535.0247.0177.087.0392.0431.0412.0536.0620.0460.0315.0184.0439.0424.0324.079.0393.0309.0342.0223.0587.0424.0460.0649.0NANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
us-gaap:AllocatedShareBasedCompensationExpense ▄▃█▆▆▁▁▁▂44.034.080.062.055.010.013.013.021.0NANANANANA11.010.011.014.09.010.014.09.010.011.015.010.011.019.013.0NANANANANANANANANANANANANANANANANA
us-gaap:ComprehensiveIncomeNetOfTax ▄▄▄▄▃▂▄▃▃▄▄▄▄▂▁▄▄▄▄▄█▃▃▃▄▃▃▄▄▃▄▄▄▃▃▄▄▄489.0247.0646.0725.0-6.0-422.0248.080.0128.0343.0418.0524.0280.0-324.0-1108.0445.0434.0566.0611.0535.02645.039.0216.00.0461.0158.0170.0340.0424.0187.0540.0721.0382.06.0-147.0764.0487.0413.0NANANANANANANANA
us-gaap:CostOfRevenue ███▇▆▆▇▇▆▆▆▆▅▅▅▅▅▄▄▄▄▃▄▄▄▄▄▄▄▄▃▃▂▂▄▃▂▂▂▂▃▂▂▁▁▁2186.02134.02137.02000.01805.01830.01963.01917.01875.01713.01833.01776.01675.01545.01603.01551.01512.01418.01486.01466.01409.01283.01374.01380.01368.01336.01408.01451.01450.01354.01186.01166.01099.01044.01348.01159.01111.01106.01062.01097.01116.01049.0998.0878.0885.0822.0
us-gaap:GrossProfit █▇▇▅▃▁▄▅▆▆▇▇▆▅▅▆▅▅▅▅▅▃▄▄▅▄▅▆▅▄▃▄▄▃▃▄▃▃▃▅▄▄▃▃▃▃1315.01156.01213.01001.0756.0561.0854.01017.01065.01099.01202.01232.01072.0955.01034.01056.0985.0957.0990.01041.0951.0764.0857.0892.0975.0929.0996.01089.01032.0935.0770.0901.0883.0770.0798.0879.0797.0814.0825.0978.0889.0874.0767.0724.0827.0731.0
us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest ▆█▅▆▃▃▄▆▅▆▅▇█▁▆▆▇▄516.0825.0330.0450.0-49.0-108.017.0408.0216.0575.0346.0758.0864.0-465.0566.0479.0592.020.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:IncomeTaxExpenseBenefit ▃▃▃▂▂▂▂▃▃▃▃▃▃▃█▃▃▂▅▂▁▂▂▂▃▃▃▄▃▃▃▃▃▃▃▃▃▃▃▃▃▃▃▂▃▃67.0226.078.023.022.0-12.0-15.071.0124.076.054.0133.0126.0124.01978.089.0153.0-66.0832.0-27.0-504.0-304.0-55.06.0110.086.0349.0395.0172.0180.0146.0141.0191.034.028.087.093.0111.061.0110.0123.0114.0145.014.031.097.0
us-gaap:InterestAndDebtExpense ███▇▇▆▆▅▅▅▅▄▄▅▄▃▃▃▃▄▄▄▄▃▃▂▃▃▂▂▂▂▂▃▃▃▂▁▁▂▂▂▂▂▂▂78.077.075.070.067.064.060.055.054.052.051.045.043.052.043.037.038.037.037.041.040.041.039.038.033.030.032.031.030.030.028.028.028.036.034.033.024.020.017.023.022.027.028.029.026.026.0
 us-gaap:LitigationSettlementExpense us-gaap:LitigationCase,us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName glw:DowCorningBreastImplantLitigation,glw:DowCorningCorporation▁█0.01800.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:NetIncomeLoss ▅▅▄▅▄▄▄▄▄▅▄▅▅▃▁▄▅▄▇▄█▃▄▄▅▅▆▆▄▄▅▅▅▅▄▅▅▅▅▅▅▅▆▅▅▅449.0599.0252.0427.0-71.0-96.032.0337.092.0499.0292.0625.0738.0-589.0-1412.0390.0439.086.01572.0284.02207.0-368.0224.0212.0496.0407.0988.01014.0169.0301.0421.0408.0638.0494.0155.0521.0462.0462.0491.0811.0755.0748.01044.0785.0913.0816.0
us-gaap:NetIncomeLossAvailableToCommonStockholdersBasic ▃▅▄▅▄▄▄▄▄▅▄▅▅▃▁▄▅▄▇▄█▃▄▄▅▅▆▆▄▄▅▅▅▅-354.0575.0227.0403.0-96.0-120.07.0313.068.0475.0267.0601.0714.0-613.0-1437.0366.0415.062.01547.0260.02183.0-392.0199.0188.0472.0383.0964.0990.0145.0280.0421.0408.0638.0494.0NANANANANANANANANANANANA
us-gaap:NetIncomeLossAvailableToCommonStockholdersDiluted ▃▅▄▅▄▄▄▄▄▅▄▅▅▃▁▅▅▄▇▄█▃▄▄▅▅▆▆▄▄▅▅▅▅▄▅▅▅▅▅▅▅▆▅▆▅-354.0599.0227.0427.0-96.0-120.032.0337.068.0499.0292.0625.0738.0-613.0-1510.0390.0439.062.01572.0284.02207.0-392.0224.0188.0496.0407.0988.01014.0145.0280.0421.0408.0638.0494.0283.0521.0462.0462.0491.0811.0755.0748.01044.0785.0913.0816.0
us-gaap:OperatingIncomeLoss ▇▇▆▄▁▁▃▅▆▆▆▇▆▄▅▆▆▆▆▇▄▄▃▆▆▆▇█▆▅▄▆▆▅▃▆▅▅▄▇▆▆█▅▆▆575.0502.0476.0257.0-103.0-121.0147.0365.0374.0420.0464.0522.0395.0194.0372.0453.0381.0424.0432.0535.0247.0177.087.0392.0431.0412.0536.0620.0460.0315.0184.0439.0424.0324.079.0393.0309.0342.0223.0587.0424.0460.0649.0319.0430.0403.0
us-gaap:OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax ▆▄█▇▆▄▇▅▆▅▆▅▄▇▇▆▆█▁▇▇█▅▅▆▅▃▂▇▅▅▇▄▃40.0-363.0452.0283.058.0-265.0167.0-238.038.0-110.0107.0-128.0-428.0264.0289.053.0-46.0450.0-973.0245.0196.0428.0-113.0-181.0-40.0-256.0-534.0-676.0269.0-132.0-198.0317.0-296.0-505.0NANANANANANANANANANANANA
us-gaap:OtherComprehensiveIncomeLossNetOfTax █▁41.0-353.0NA299.065.0-327.0NA-257.036.0-156.0NA-101.0-459.0265.0NANANANANANANANANANANANANANANANA119.0313.0-256.0-488.0-313.0241.04.0-61.0-191.0-371.0241.0NANANANANA
us-gaap:OtherNonoperatingIncomeExpense ▂▃▂▂▂▂▂▂▂▂▁▃▃▂▂▂▂▂▂▂▂▃▂▂▂▂█▇▁▃▅▂▄▃▃▂▂▃▃▃▃▃▃▂▃▃7.0117.011.0-62.02.0-11.0-96.0-15.0-35.0-9.0-205.012.014.0-37.0-60.0-4.0-18.0-21.0-14.0-28.0-26.021.0-21.0-27.0-23.0-21.0805.0720.0-155.024.0338.0-1.0265.065.041.05.08.029.021.027.043.027.054.02.064.064.0
us-gaap:PreferredStockDividendsIncomeStatementImpact ▁█████████████████████0.024.025.024.025.024.025.024.024.024.025.024.024.024.025.024.024.024.025.024.024.024.0NANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:ProfitLoss ▁█454.0601.0NA432.0-65.0-96.0NA341.0105.0505.0NA633.0744.0-586.0NANANANANANANANANANANANANANANANA561.0465.0501.0434.0219.0539.0472.0498.0490.0811.0755.0747.01044.0785.0912.0815.0
us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax █▇▇▆▅▄▆▆▆▆▆▆▅▄▅▅▄▄▄▄▄▃▃▄▄▄▄▅▄▄▂▃▃▂▃▃▂▂▂▃▃▂▂▁▂▁3501.03290.03350.03001.02561.02391.02817.02934.02940.02812.03035.03008.02747.02500.02637.02607.02497.02375.02476.02507.02360.02047.02231.02272.02343.02265.02404.02540.02482.02289.01956.02067.01982.01814.02146.02038.01908.01920.01887.02075.02005.01923.01765.01602.01712.01553.0
us-gaap:Revenues █▇▇▆▅▄▆▆▆▆▆▆▅▄▅▅▄▄▄▄▄▃▃▄▄▄▄▅▄▄▂▃▃▂▃▃▂▂▂▃▃▂▂▁▂▁3501.03290.03350.03001.02561.02391.02817.02934.02940.02812.03035.03008.02747.02500.02637.02607.02497.02375.02476.02507.02360.02047.02231.02272.02343.02265.02404.02540.02482.02289.01956.02067.01982.01814.02146.02038.01908.01920.01887.02075.02005.01923.01765.01602.01712.01553.0
us-gaap:SellingGeneralAndAdministrativeExpense ▆▅▆▆▅▅▅▄▅▅▆▅▅▇▅▄▄▃▄▃▇▃█▃▃▃▂▂▃▅▃▂▂▂▄▃▃▂▂▁▂▂▂▂▂▁465.0400.0471.0480.0401.0395.0401.0369.0414.0401.0447.0439.0412.0501.0400.0372.0379.0316.0368.0302.0499.0303.0563.0307.0337.0316.0242.0256.0318.0395.0332.0265.0266.0259.0356.0294.0291.0279.0283.0216.0284.0250.0284.0250.0246.0235.0
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
us-gaap:Assets ▇▇█▇▃▄▅▃▃▃▃▂▁▂▃▄▄▅▄▅█▄▅▅▇▆▇▇▇▆▅▅▅▅▆▆▅▅▄▄▄▂▁29806.030143.030775.030267.027546.027859.028898.027329.027575.027321.027505.026392.026140.026834.027494.028094.027830.028305.027899.028809.030653.027945.028547.028898.029888.029323.030063.029815.029832.029544.028478.028714.028389.028595.029375.029410.028754.028489.027848.028173.027825.026660.025833.0NANANA
us-gaap:Liabilities █▇██▇▇▇▆▆▆▆▅▅▅▄▄▃▃▃▄▄▃▃▃▃▂▂▂▂▂▂▁▁▂▂▂▂▂▁▁▁▁▁17664.016585.017327.017410.015413.015572.015901.014195.014054.013615.013619.012414.012189.012346.011724.010711.09750.09926.09939.011022.010981.09958.09684.08828.08833.07951.08411.07965.08000.07825.07267.06916.06935.07205.07842.07524.07352.07122.06719.06482.06519.06305.06407.0NANANA
us-gaap:LiabilitiesAndStockholdersEquity ▇▇█▇▃▄▅▃▃▃▃▂▁▂▃▄▄▅▄▅█▄▅▅▇▆▇▇▇▆▅▅▅▅▆▆▅▅▄▄▄▂▁29806.030143.030775.030267.027546.027859.028898.027329.027575.027321.027505.026392.026140.026834.027494.028094.027830.028305.027899.028809.030653.027945.028547.028898.029888.029323.030063.029815.029832.029544.028478.028714.028389.028595.029375.029410.028754.028489.027848.028173.027825.026660.025833.0NANANA
us-gaap:StockholdersEquity ▁▂▂▁▁▁▂▂▂▂▂▂▂▃▄▅▅▅▅▅▆▅▆▇▇█████████████▇██▇▆11960.013369.013257.012660.012049.012198.012907.013034.013425.013607.013792.013890.013877.014413.015698.017317.018012.018308.017893.017721.019609.017918.018788.019997.020983.021298.021579.021779.021763.021650.021162.021749.021378.021344.021486.021839.021354.021317.021078.021640.021255.020304.019375.0NANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
us-gaap:AssetsCurrent ▃▄▄▄▂▂▃▁▁▁▂▂▂▃▅▄▄▅▅▅█▃▄▆▇▆▇▇▇▆▅▆▅▆▆▆▆▇▅▆▆▅▅7648.08103.08004.08058.06846.06946.07463.06156.06311.06349.07034.06632.06484.07663.08827.08254.08431.08718.09048.08479.010747.07178.08269.09253.09868.09238.010238.010013.09864.09613.08891.09128.09053.09269.09695.09516.09378.09801.08677.09264.09329.09037.08859.0NANANA
us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents ▄▅▅▄▃▃▄▁▁▂▄▃▃▅█2320.02868.02672.02514.02158.02025.02434.0971.01178.01456.02355.01903.02023.03096.04317.0NANANA5291.0NANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:AccountsReceivableNetCurrent █▇██▅▅▆▇█▇▇▇▆▆▆▆▅▅▄▅▄▄▃▄▄▄▄▅▅▅▃▄▃▃▃▃▂▂▂▂▃▂▁2057.01900.02133.02099.01712.01708.01836.02024.02103.01974.01940.01973.01842.01747.01807.01748.01640.01583.01481.01645.01544.01388.01372.01479.01545.01487.01501.01601.01645.01588.01253.01392.01296.01243.01302.01248.01157.01108.01082.01189.01252.01107.0973.0NANANA
us-gaap:InventoryNet ▇▇▇█▇▇▇▇▇▇▆▅▅▅▅▅▄▄▄▄▄▄▃▃▃▃▃▃▃▃▃▃▃▃▂▂▂▂▂▂▂▁▁2387.02361.02438.02581.02235.02347.02320.02337.02291.02190.02037.01921.01896.01834.01712.01693.01616.01544.01471.01516.01501.01453.01385.01374.01385.01331.01322.01327.01380.01395.01270.01275.01240.01171.01051.01003.0999.0955.0975.0939.0917.0841.0738.0NANANA
us-gaap:OtherAssetsCurrent ▆▆▅▅▄▅▅▅▄▄▄▅▄▆▆▆▆▄▅▂▃▅▆▇█▇▇▅▃▄▅▄▅▄▃▂▂▂▁▁▁▁▁884.0974.0761.0864.0741.0866.0873.0824.0739.0729.0702.0835.0723.0986.0991.0948.0986.0719.0805.0497.0558.0797.0912.01072.01174.01091.01099.0825.0604.0697.0855.0706.0764.0681.0619.0424.0436.0479.0347.0359.0364.0353.0367.0NANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
 us-gaap:NoncurrentAssets us-gaap:ConsolidationItems us-gaap:OperatingSegmentsNANA21650.0NANANA20278.0NANANA19519.0NANANA17854.0NANANA16376.0NANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:NoncurrentAssets us-gaap:StatementGeographical country:CANANA121.0NANANA126.0NANANA127.0NANANA138.0NANANA142.0NANANA144.0NANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:NoncurrentAssets us-gaap:StatementGeographical country:CNNANA4469.0NANANA3816.0NANANA2811.0NANANA1955.0NANANA1140.0NANANA1036.0NANANA1115.0NANANANANANANANANANANANANANANANANANANA
 us-gaap:NoncurrentAssets us-gaap:StatementGeographical country:DENANA579.0NANANA546.0NANANA508.0NANANA201.0NANANA154.0NANANA189.0NANANA217.0NANANANANANANANANANANANANANANANANANANA
 us-gaap:NoncurrentAssets us-gaap:StatementGeographical country:JPNANA583.0NANANA893.0NANANA1148.0NANANA1015.0NANANA1008.0NANANA1160.0NANANA1311.0NANANANANANANANANANANANANANANANANANANA
 us-gaap:NoncurrentAssets us-gaap:StatementGeographical country:KRNANA3597.0NANANA3625.0NANANA3736.0NANANA3858.0NANANA3413.0NANANA3552.0NANANA3595.0NANANANANANANANANANANANANANANANANANANA
 us-gaap:NoncurrentAssets us-gaap:StatementGeographical country:MXNANA239.0NANANA267.0NANANA200.0NANANA174.0NANANA134.0NANANA135.0NANANA50.0NANANANANANANANANANANANANANANANANANANA
 us-gaap:NoncurrentAssets us-gaap:StatementGeographical country:TWNANA2247.0NANANA2280.0NANANA2326.0NANANA2357.0NANANA2347.0NANANA2301.0NANANA2005.0NANANANANANANANANANANANANANANANANANANA
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 us-gaap:NoncurrentAssets us-gaap:StatementGeographical glw:AllOtherNANA83.0NANANA38.0NANANA40.0NANANA46.0NANANA44.0NANANA36.0NANANA55.0NANANANANANANANANANANANANANANANANANANA
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 us-gaap:NoncurrentAssets us-gaap:StatementGeographical srt:AsiaPacificNANA10979.0NANANA10700.0NANANA10106.0NANANA9541.0NANANA8459.0NANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:NoncurrentAssets us-gaap:StatementGeographical srt:EuropeNANA1510.0NANANA1493.0NANANA1663.0NANANA1344.0NANANA1279.0NANANANANANANANANANANANANANANANANANANANANANANANANANANA
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us-gaap:PropertyPlantAndEquipmentGross NANA29405.0NANANA28332.0NANANA26827.0NANANA24826.0NANANA22430.0NANANA21836.0NA21453.021299.021098.021445.021979.021485.017666.017874.017637.017777.018277.018781.018237.017583.017875.017355.016579.015800.015363.0NANANA
 us-gaap:PropertyPlantAndEquipmentGross us-gaap:PropertyPlantAndEquipmentByType us-gaap:BuildingNANA6453.0NANANA6023.0NANANA5924.0NANANA5864.0NANANA5540.0NANANA5504.0NA5470.05472.05470.05607.05812.05619.04175.04218.04180.04233.04324.0NANANANANANANANANANANA
 us-gaap:PropertyPlantAndEquipmentGross us-gaap:PropertyPlantAndEquipmentByType us-gaap:ConstructionInProgressNANA1918.0NANANA2757.0NANANA2218.0NANANA1832.0NANANA1482.0NANANA1206.0NA1316.01419.01322.01275.01294.01687.01084.01139.01082.01113.01270.0NANANANANANANANANANANA
 us-gaap:PropertyPlantAndEquipmentGross us-gaap:PropertyPlantAndEquipmentByType us-gaap:EquipmentNANA20563.0NANANA19100.0NANANA18218.0NANANA16648.0NANANA14973.0NANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:PropertyPlantAndEquipmentGross us-gaap:PropertyPlantAndEquipmentByType us-gaap:LandNANA471.0NANANA452.0NANANA467.0NANANA482.0NANANA435.0NANANA438.0NA449.0452.0458.0474.0494.0496.0121.0115.0114.0108.0112.0NANANANANANANANANANANA
 us-gaap:PropertyPlantAndEquipmentGross us-gaap:PropertyPlantAndEquipmentByType us-gaap:LeaseholdsAndLeaseholdImprovementsNANA184.0NANANA294.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment █████▇▇▇▇▆▆▆▆▆▅▅▅▅▄▅▄▄▄▃▃▃▃▃▃▃▂▂▂▂▂▂▂▂▂▂▁▁▁13657.013514.013663.013874.013476.013187.012995.012731.012506.012136.011932.011368.011259.011265.010809.010684.010511.010304.09884.010206.09974.09632.09188.09027.08784.08591.08332.08412.08456.08141.07865.07897.07683.07606.07652.07745.07486.07210.07204.07089.06824.06565.06420.0NANANA
us-gaap:AmortizationOfIntangibleAssets ████▇▆▇▇▇▇▆▆▅▅▅▄▄▄▄▄▄▄▄▃▄▃▂▃▂▂▂▂▂▂▂▁▁▂▁▁▁▁▁▁▁▁33.032.034.033.028.026.028.028.028.029.026.027.022.019.022.018.018.017.018.017.015.014.014.012.016.012.08.09.08.08.08.08.08.07.06.04.04.05.04.04.04.03.02.02.02.02.0
us-gaap:PropertyPlantAndEquipmentNet ████▇▇█▇▇▇▇▇▆▇▆▆▅▅▅▅▅▅▅▅▅▅▅▅▆▆▂▂▂▂▃▃▃▂▃▂▂▁▁15455.015364.015742.015449.014691.014932.015337.015083.015137.014878.014895.014345.014201.014416.014017.013344.013060.012969.012546.013293.013048.012823.012648.012549.012669.012708.012766.013033.013523.013344.09801.09977.09954.010171.010625.011036.010751.010373.010671.010266.09755.09235.08943.0NANANA
us-gaap:LongTermInvestments NANA137.0NANANANANANANA16.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:LongTermInvestments us-gaap:BalanceSheetLocation us-gaap:OtherNoncurrentAssetsNANANA13.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:LongTermInvestments us-gaap:BalanceSheetLocation,us-gaap:FairValueByFairValueHierarchyLevel us-gaap:OtherNoncurrentAssets,us-gaap:FairValueInputsLevel1NANANA13.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:LongTermInvestments us-gaap:FairValueByFairValueHierarchyLevel us-gaap:FairValueInputsLevel1NANA137.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures NANA435.0354.0329.0320.0334.0339.0344.0346.0376.0322.0339.0345.0340.0352.0348.0337.0336.0352.0346.02072.01975.01826.01844.01764.01801.02002.02013.01976.05537.05160.04809.04726.04915.05172.04870.04554.04726.04890.05029.04569.04372.0NANANA
 us-gaap:InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName glw:AllOtherNANA435.0NANANA334.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:Goodwill ████▅▅▅▅▅▅▅▅▅▃▃▃▃▃▃▂▂▁▁▁▁▁2433.02429.02460.02427.01925.01918.01935.01924.01938.01930.01936.01930.01918.01698.01694.01684.01608.01619.01577.01569.01569.01399.01380.01330.01343.01343.0NA1142.01150.01125.01002.01001.01001.0972.0974.0664.0663.0665.0664.0629.07100.07100.07000.0NANANA
us-gaap:IntangibleAssetsNetExcludingGoodwill ▇▇██▆▆▇▇▇▇███▄▄▄▄▄▄▄▄▃▃▃▃▃▁1228.01259.01308.01332.01072.01149.01185.01206.01240.01265.01292.01309.01332.0851.0869.0891.0842.0825.0796.0797.0804.0703.0706.0678.0700.0702.0497.0NANANA540.0NANANANANANANANANANANANANANANA
us-gaap:FiniteLivedIntangibleAssetsNet NANA1308.01332.0NANA1185.0NANANA1292.01309.01332.0851.0869.0891.0842.0825.0796.0797.0804.0703.0706.0678.0700.0702.0497.0511.0532.0540.0540.0550.0558.0513.0522.0248.0253.0257.0262.0252.0251.0255.0179.0NANANA
 us-gaap:FiniteLivedIntangibleAssetsNet us-gaap:FiniteLivedIntangibleAssetsByMajorClass glw:CustomerListsAndOtherNANA1063.01081.0NANA944.0NANANA1030.01042.01059.0662.0675.0701.0662.0642.0612.0606.0608.0514.0518.0484.0497.0501.0344.0354.0369.0374.0388.0395.0401.0NA368.0NANANA153.0NANANA95.0NANANA
 us-gaap:FiniteLivedIntangibleAssetsNet us-gaap:FiniteLivedIntangibleAssetsByMajorClass glw:PatentsTrademarksAndTradeNamesNANA245.0251.0NANA241.0NANANA262.0267.0273.0189.0194.0190.0180.0183.0184.0191.0196.0189.0188.0194.0203.0201.0153.0157.0163.0166.0152.0155.0157.0151.0154.0105.0107.0108.0109.0109.0100.0105.081.0NANANA
us-gaap:DeferredTaxAssetsLiabilitiesNet NANA808.0NANANA832.0NANANA604.0NANANA362.0NANANA2008.0NANANA1716.0NANANA1756.0NANANA2498.0NANANA2907.0NANANA3040.0NANANA3164.0NANANA
us-gaap:OperatingLeaseRightOfUseAsset NANA680.0NANANA504.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:OtherAssetsNoncurrent ▇▇█▆▅▅▆▆▆▆▄▄▄▄▄▄▄▄▅▅▅▅▆▆▆▆▇▅▃▃▂▂▂▂▂▁▁▁▁▁▁▁▁1991.01996.02140.01474.01417.01413.01487.01512.01552.01502.01021.01023.01007.0952.0934.0928.0890.01132.01271.01209.01187.01342.01513.01551.01656.01685.01722.01170.0666.0766.0473.0495.0561.0437.0301.0273.0274.0259.0196.0157.0150.0174.0153.0NANANA
 us-gaap:EquitySecuritiesFvNi us-gaap:BalanceSheetLocation,us-gaap:FairValueByFairValueHierarchyLevel us-gaap:OtherCurrentAssets,us-gaap:FairValueInputsLevel116.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:EquitySecuritiesFvNi us-gaap:FairValueByFairValueHierarchyLevel us-gaap:FairValueInputsLevel1NA109.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:EquitySecuritiesFvNi us-gaap:FairValueByFairValueHierarchyLevel us-gaap:FairValueInputsLevel3NANA107.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
us-gaap:AccountsPayableCurrent ▆▆▅▅▄▆█▇▆▆▇▄▄▅▇▅▄▄▄▃▃▂▃▃▃▃▄▂▂▂▂▁▂▂▂▃▃▃▃▃▄▃▂1312.01272.01174.01176.01109.01250.01587.01447.01297.01278.01456.01092.01111.01164.01439.01179.01096.01015.01079.0933.0938.0836.0934.0909.0930.0872.0997.0716.0777.0732.0771.0640.0721.0762.0779.0901.0929.0847.0977.0938.01052.0949.0798.0NANANA
us-gaap:AccruedIncomeTaxesCurrent ▄▅▅▆▃▅▆▆▄▇▅██▆▄▄▄▇▄▄▂▁▁140.0153.0173.0194.0116.0169.0182.0183.0149.0237.0169.0252.0247.0192.0148.0135.0129.0210.0150.0149.082.057.053.0NANANA106.0NANANA139.0NANANA282.0NANANA288.0NANANA181.0NANANA
us-gaap:AccruedLiabilitiesCurrent █▅▆▆▅▅▅▄▄▄▄▄▃▃▃▂▂▂▃▃▂▂▃▁▂▁▃▂▁▁▁▁▁▂▂▁▁▁▂▂▂▁▂2959.02087.02437.02417.01899.01929.01923.01848.01664.01774.01851.01768.01545.01451.01391.01255.01081.01149.01416.01354.01231.01201.01308.0956.0990.0917.01291.0967.0950.0846.0954.0915.0804.0959.01101.0956.0934.0907.01093.01044.01005.0919.01131.0NANANA
us-gaap:ContractWithCustomerLiabilityCurrent █▇▇▅▆▆▁228.0217.0211.0181.0192.0192.0104.0NANA84.054.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:DebtCurrent ▅▃▃▄▁▁▁▄▆▁▁▄▄▅▅██▄▄▁▄▇▇353.0154.0156.0256.012.012.011.0305.0455.07.04.0252.0252.0380.0379.0631.0631.0257.0256.07.0279.0527.0572.0NANANA36.0NANANANANANANANANANANANANANANANANANANA
us-gaap:LiabilitiesCurrent █▅▆▆▄▅▅▆▅▄▅▅▄▄▅▄▄▃▄▃▃▃▄▂▂▂▃▂▂▂▁▁▁▁▂▂▂▁▂▂▂▂▂4624.03513.03767.03849.03020.03191.03521.03600.03416.03059.03311.03112.02908.02995.03209.03065.02808.02421.02751.02294.02448.02564.02814.01966.02022.01895.02324.02138.02177.02046.01746.01578.01597.01795.01956.01987.01892.01781.02097.02009.02083.01894.01986.0NANANA
us-gaap:OperatingLeaseLiabilityCurrent ▆▁█94.089.096.0NANANA62.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:OtherAccruedLiabilitiesCurrent █▅▆▇▅▅▅▅▅▆▅▄▃▂▂▂▁▁▃▁▁▁▂1178.0907.0973.01056.0889.0829.0853.0905.0885.0977.0871.0785.0653.0584.0540.0510.0460.0450.0621.0456.0476.0453.0526.0NANANA623.0NANANA370.0NANANA359.0NANANA432.0NANANA465.0NANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
 us-gaap:LongTermDebt us-gaap:DebtInstrument glw:Debentures29Due2022NANA374.0NANANA374.0NANANA373.0NANANA373.0NANANA372.0NANANA374.0NANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:LongTermDebt us-gaap:DebtInstrument glw:Debentures3.9Due2049NANA394.0NANANA395.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:LongTermDebt us-gaap:DebtInstrument glw:Debentures370Due2023NANA249.0NANANA249.0NANANA249.0NANANA249.0NANANA248.0NANANA249.0NANANA249.0NANANA249.0NANANANANANANANANANANANANANANA
 us-gaap:LongTermDebt us-gaap:DebtInstrument glw:Debentures4.375Due2057NANA743.0NANANA742.0NANANA742.0NANANA743.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:LongTermDebt us-gaap:DebtInstrument glw:Debentures470Due2037NANA296.0NANANA295.0NANANA295.0NANANA248.0NANANA248.0NANANA250.0NANANA250.0NANANA250.0NANANA250.0NANANANANANANANANANANA
 us-gaap:LongTermDebt us-gaap:DebtInstrument glw:Debentures475Due2042NANA496.0NANANA496.0NANANA496.0NANANA496.0NANANA495.0NANANA499.0NANANA499.0NANANA499.0NANANA500.0NANANANANANANANANANANA
 us-gaap:LongTermDebt us-gaap:DebtInstrument glw:Debentures5.45Due2079NANA1084.0NANANA1085.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:LongTermDebt us-gaap:DebtInstrument glw:Debentures575Due2040NANA396.0NANANA395.0NANANA395.0NANANA397.0NANANA395.0NANANA398.0NANANA398.0NANANA398.0NANANA398.0NANANANANANANANANANANA
 us-gaap:LongTermDebt us-gaap:DebtInstrument glw:Debentures685Due2029NANA161.0NANANA163.0NANANA164.0NANANA166.0NANANA167.0NANANA169.0NANANA170.0NANANA172.0NANANA173.0NANANANANANANANANANANA
 us-gaap:LongTermDebt us-gaap:DebtInstrument glw:Debentures8875Due2021NANA63.0NANANA64.0NANANA65.0NANANA66.0NANANA67.0NANANA68.0NANANA69.0NANANA70.0NANANA71.0NANANANANANANANANANANA
 us-gaap:LongTermDebt us-gaap:DebtInstrument glw:DebenturesBNANA99.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:LongTermDebt us-gaap:DebtInstrument glw:DebenturesCallable725Due2036NANA249.0NANANA249.0NANANA248.0NANANA248.0NANANA248.0NANANA249.0NANANA249.0NANANA249.0NANANA249.0NANANANANANANANANANANA
 us-gaap:LongTermDebt us-gaap:DebtInstrument glw:OtherAverageRate4.27DueThrough2043NANA598.0NANANA321.0NANANA396.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:LongTermDebt us-gaap:DebtInstrument glw:YenDenominatedDebentures.698Due2024NANA203.0NANANA192.0NANANA191.0NANANA185.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:LongTermDebt us-gaap:DebtInstrument glw:YenDenominatedDebentures.722Due2025NANA96.0NANANA91.0NANANA90.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:LongTermDebt us-gaap:DebtInstrument glw:YenDenominatedDebentures.992Due2027NANA453.0NANANA430.0NANANA426.0NANANA414.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:LongTermDebt us-gaap:DebtInstrument glw:YenDenominatedDebentures1.043Due2028NANA293.0NANANA278.0NANANA276.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:LongTermDebt us-gaap:DebtInstrument glw:YenDenominatedDebentures1.153Due2031NANA301.0NANANA285.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:LongTermDebt us-gaap:DebtInstrument glw:YenDenominatedDebentures1.219Due2030NANA239.0NANANA227.0NANANA226.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:LongTermDebt us-gaap:DebtInstrument glw:YenDenominatedDebentures1.513Due2039NANA56.0NANANA54.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:LongTermDebt us-gaap:DebtInstrument glw:YenDenominatedDebentures1.583Due2037NANA96.0NANANA91.0NANANA91.0NANANA85.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:LongTermDebtAndCapitalLeaseObligations ▇██████▆▆▆▆▅▅▄▄▃▂▃▃▃▃▃▃▃▃▂▂▂▂▂▂▂▂▂▂▂▂▂▁▁▁▁▁7025.07650.07816.07822.07797.07815.07729.06225.06080.06018.05994.05056.05099.04808.04749.03994.03302.03669.03646.03916.03918.03910.03910.03915.03910.03165.03227.03228.03238.03224.03272.02816.02822.02855.03382.03272.03229.03135.02364.02282.02248.02245.02262.0NANANA
us-gaap:DeferredIncomeTaxLiabilitiesNet ▄▅▇▁▃▁█277.0287.0313.0247.0273.0251.0325.0NANANA347.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent us-gaap:RetirementPlanSponsorLocation,us-gaap:RetirementPlanType country:US,us-gaap:PensionPlansDefinedBenefitNANA615.0NANANA690.0NANANA603.0NANANA506.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent us-gaap:RetirementPlanSponsorLocation,us-gaap:RetirementPlanType us-gaap:ForeignPlan,us-gaap:PensionPlansDefinedBenefitNANA272.0NANANA282.0NANANA213.0NANANA199.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent us-gaap:RetirementPlanType glw:OtherPostretirementBenefitsPlanNANA727.0NANANA671.0NANANA662.0NANANA749.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent us-gaap:RetirementPlanType us-gaap:PensionPlansDefinedBenefitNANA887.0NANANA972.0NANANA816.0NANANA705.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:MinorityInterest ▇███▃▃▃▄▃▃▃▃▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▁▁▂▁▁▁▁▁▁▁▁▁▁182.0189.0191.0197.084.089.090.0100.096.099.094.088.074.075.072.066.068.071.067.066.063.069.075.073.072.074.073.071.069.069.049.049.076.046.047.047.048.050.051.051.051.051.051.0NANANA
us-gaap:OtherLiabilitiesNoncurrent █▇██▆▆▆▅▆▆▅▅▅▅▄▄▄▄▄▆▆▄▃▃▃▂▂▂▂▂▁▂▂▂▂▁▁▁▁▁▁▁▁5292.04689.05017.05072.03928.03895.03980.03724.03910.03879.03652.03545.03480.03797.03017.02940.02928.03101.02805.04104.03905.02767.02242.02165.02120.02081.02046.01842.01834.01789.01483.01605.01600.01622.01574.01364.01331.01306.01361.01300.01302.01251.01246.0NANANA
us-gaap:OperatingLeaseLiabilityNoncurrent ▃▁█618.0611.0633.0NANANA450.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearTwo NANA125.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearThree NANA114.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFour NANA102.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFive NANA92.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive NANA733.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
us-gaap:StockholdersEquity ▁▂▂▁▁▁▂▂▂▂▂▂▂▃▄▅▅▅▅▅▆▅▆▇▇█████████████▇██▇▆11960.013369.013257.012660.012049.012198.012907.013034.013425.013607.013792.013890.013877.014413.015698.017317.018012.018308.017893.017721.019609.017918.018788.019997.020983.021298.021579.021779.021763.021650.021162.021749.021378.021344.021486.021839.021354.021317.021078.021640.021255.020304.019375.0NANANA
us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest ▁▂▂▂▁▁▂▂▂▂▂▂▂▃▄▅▅▅▅▅▆▅▆▇▇█████████████▇██▇▆12142.013558.013448.012857.012133.012287.012997.013134.013521.013706.013886.013978.013951.014488.015770.017383.018080.018379.017960.017787.019672.017987.018863.020070.021055.021372.021652.021850.021832.021719.021211.021798.021454.021390.021533.021886.021402.021367.021129.021691.021306.020355.019426.0NANANA
us-gaap:CommonStockValue █▅▅▅▄▄▄▄▄▄▄▄▄▄▄▄▄▄▃▃▃▃▃▃▃▃▃▃▃▂▂▂▂▂▂▂▂▂▁▁▁▁▁907.0864.0863.0861.0860.0859.0859.0859.0858.0857.0857.0856.0855.0854.0854.0853.0852.0850.0846.0844.0842.0841.0840.0840.0840.0840.0836.0836.0835.0833.0831.0829.0828.0826.0825.0824.0823.0822.0818.0818.0817.0817.0813.0NANANA
us-gaap:AdditionalPaidInCapitalCommonStock █▅▅▄▄▄▄▄▄▄▄▄▄▄▃▃▃▃▃▂▃▃▂▂▂▂▂▂▂▁▁▂▂▂▂▂▁▁▁▁▁▁▁16352.014722.014642.014494.014398.014340.014323.014295.014277.014243.014212.014201.014158.014119.014089.014013.013962.013888.013695.013340.013668.013638.013352.013590.013578.013552.013456.013336.013305.013072.013066.013215.013206.013167.013146.013118.013096.013077.013041.013014.012989.012954.012865.0NANANA
us-gaap:RetainedEarningsAccumulatedDeficit ▇▇▇▇▇▇▇▇▇▇▇▇▇▆▇████▇▇▅▆▆▅▅▅▅▄▄▄▄▄▃▃▃▃▃▃▂▂▁▁15739.016509.016120.016065.015847.016114.016408.016555.016399.016489.016303.016186.015731.015166.015930.017533.017303.017030.016880.015460.015331.013290.013832.013769.013727.013405.013021.012339.011478.011465.011320.011017.010754.010262.010588.010438.010029.09679.09332.08958.08227.07550.06881.0NANANA
us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax ▃▃▄▃▂▂▃▂▃▃▃▃▃▅▄▃▃▃▁▄▄▂▁▁▂▂▃▅▇▆▇▆▅▆▆▇▆▆▆▇█▇▇-1052.0-1092.0-740.0-1134.0-1432.0-1497.0-1171.0-1387.0-1130.0-1166.0-1010.0-1136.0-1035.0-577.0-842.0-1146.0-1201.0-1196.0-1676.0-715.0-966.0-1404.0-1811.0-1803.0-1591.0-1556.0-1307.0-489.0185.0-70.044.0-75.0-388.0-132.0-300.0105.0-136.0-140.0-89.093.0464.0223.043.0NANANA
us-gaap:TreasuryStockValue ███████████▇▇▇▇▇▆▆▆▆▅▅▄▄▃▃▃▃▃▃▂▂▂▂▂▂▁▁▁▁▁▁▁19986.019934.019928.019926.019924.019918.019812.019588.019279.019116.018870.018517.018132.017449.016633.016236.015204.014564.014152.013508.011566.010747.09725.08699.07871.07243.06727.06543.06340.05950.04099.03237.03022.02779.02773.02646.02458.02121.02024.01243.01242.01240.01227.0NANANA
us-gaap:MinorityInterest ▇███▃▃▃▄▃▃▃▃▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▁▁▂▁▁▁▁▁▁▁▁▁▁182.0189.0191.0197.084.089.090.0100.096.099.094.088.074.075.072.066.068.071.067.066.063.069.075.073.072.074.073.071.069.069.049.049.076.046.047.047.048.050.051.051.051.051.051.0NANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
us-gaap:NetCashProvidedByUsedInOperatingActivities ▆▆▆▅▅▃█▇▂▁▇▇▆▃▇▆▃▂771.0723.0774.0608.0550.0248.01018.0889.0153.0-29.0941.0943.0715.0320.0888.0645.0280.0191.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:NetCashProvidedByUsedInInvestingActivities ▂▂▂▂▂▂▂▂▂▂▂▂▁▂▂▂▂▂▂▂█▂▃▂▃▂▂▂▂▂▂▂▂▂▁▂▂▂▂▂▂▂▂▁▂▃-127.0-288.0-378.0-148.0-245.0-539.0-357.0-500.0-551.0-483.0-621.0-511.0-1111.0-644.0-492.0-584.0-308.0-326.0-294.0-282.04314.0-76.0137.0-199.090.0-713.0-209.0-170.0-282.0-301.0-429.0-225.0-228.0-122.0-1007.0-482.0-535.0-604.0-476.0-418.0-505.0-657.0-560.0-902.0-384.077.0
us-gaap:NetCashProvidedByUsedInFinancingActivities ▄▆▆▆▆▆█▅▇▆▇▅▅▅▆▆▅▆▆▁▄▅▄▄▆▅▅▆▆▄▅▆▆▅▆▆▆█▅▆▆▆▆▇▆▆-1199.0-190.0-314.0-143.0-178.0-94.0786.0-571.0131.0-393.0121.0-538.0-619.0-959.0-29.0-457.0-750.0-388.0-448.0-2735.0-1210.0-913.0-1014.0-980.0-35.0-574.0-740.0-357.0-312.0-1177.0-716.0-363.0-355.0-629.0-209.0-166.0-332.0592.0-805.0-46.0-72.0-57.0-175.0346.0-62.0-111.0
us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect ▃▅▅▅▅▃█▄▃▂▅▄▁▁-548.0196.0158.0356.0133.0-409.01463.0-207.0-278.0-899.0452.0-120.0-1073.0-1221.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
us-gaap:DeferredIncomeTaxExpenseBenefit ▂▃▃▃▂▂▂▂▃▂▂▃▃▃█▃▃▂▅▂▁▂▂▃▃▃▃▄▃▃▃▃▃▃▃▃▃▃▃▃▃▃▃▃▂▃-65.0121.076.034.0-90.0-40.0-106.0-51.06.0-40.0-91.07.030.016.01858.014.045.0-121.0739.0-149.0-553.0-345.0-133.0156.036.0-5.0198.0311.081.022.048.022.0149.0-30.024.023.0-26.047.0-3.022.081.015.083.0-25.0-40.050.0
us-gaap:IncreaseDecreaseInAccountsReceivable ▆▃▄█▄▃▁▄▆▄▃▆▆▃▄▅▅▅▃▅▆▄▂▃▅▃▃▅▄▄▂▅▅▄▆▅▄▅▃▃▆▆▁▂▅▆158.0-109.0-7.0308.016.0-43.0-217.0-32.0165.036.0-43.0156.0135.0-94.035.092.044.054.0-78.081.0124.0-21.0-110.0-77.060.0-35.0-47.052.032.0-21.0-110.083.073.0-17.0123.081.019.049.0-98.0-61.0122.0121.0-224.0-131.073.0120.0
us-gaap:IncreaseDecreaseInInventories ▆▅▃▃▄▇▅▇▇█▇▆▇▇▆▆▇▆▆▆▆▆▆▆▆▆▆▅▅▆▆▆▇█▅▆▆▅▆▆▇▇▁▇▆▆26.0-44.0-183.0-187.0-120.067.0-40.081.098.0159.0111.042.095.098.04.056.061.049.0-1.03.024.042.017.06.053.01.025.0-14.0-16.03.09.027.073.0138.0-8.0-4.047.0-12.031.027.064.079.0-307.085.031.031.0
us-gaap:IncreaseDecreaseInOtherOperatingCapitalNet ▅▇▆▄▄▅▆▅▆▆▃▆▇▅▄▅▄▆▄▅▅▆▃▆▅▆█▁▅▆▆▆▆▄█▅▃▇▆▆▅▄▆▄▇▆-2.0127.066.0-109.0-80.0-4.07.0-74.029.033.0-180.011.0140.0-32.0-106.0-3.0-120.06.0-115.0-26.0-23.043.0-225.061.0-29.013.0170.0-343.0-38.042.042.041.012.0-141.0188.0-62.0-166.0110.034.067.0-55.0-144.062.0-134.0109.063.0
us-gaap:NetCashProvidedByUsedInOperatingActivities ▆▆▆▅▅▃█▇▂▁▇▇▆▃▇▆▃▂771.0723.0774.0608.0550.0248.01018.0889.0153.0-29.0941.0943.0715.0320.0888.0645.0280.0191.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:NetIncomeLoss ▅▅▄▅▄▄▄▄▄▅▄▅▅▃▁▄▅▄▇▄█▃▄▄▅▅▆▆▄▄▅▅▅▅▄▅▅▅▅▅▅▅▆▅▅▅449.0599.0252.0427.0-71.0-96.032.0337.092.0499.0292.0625.0738.0-589.0-1412.0390.0439.086.01572.0284.02207.0-368.0224.0212.0496.0407.0988.01014.0169.0301.0421.0408.0638.0494.0155.0521.0462.0462.0491.0811.0755.0748.01044.0785.0913.0816.0
us-gaap:ProfitLoss ▁█454.0601.0NA432.0-65.0-96.0NA341.0105.0505.0NA633.0744.0-586.0NANANANANANANANANANANANANANANANA561.0465.0501.0434.0219.0539.0472.0498.0490.0811.0755.0747.01044.0785.0912.0815.0
us-gaap:ShareBasedCompensation NANA80.062.0NANA13.013.0NANANANANANANANANA14.09.010.014.09.010.011.015.010.011.019.013.015.014.015.014.011.014.016.016.024.020.021.022.023.015.022.026.029.0
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
us-gaap:NetCashProvidedByUsedInInvestingActivities ▂▂▂▂▂▂▂▂▂▂▂▂▁▂▂▂▂▂▂▂█▂▃▂▃▂▂▂▂▂▂▂▂▂▁▂▂▂▂▂▂▂▂▁▂▃-127.0-288.0-378.0-148.0-245.0-539.0-357.0-500.0-551.0-483.0-621.0-511.0-1111.0-644.0-492.0-584.0-308.0-326.0-294.0-282.04314.0-76.0137.0-199.090.0-713.0-209.0-170.0-282.0-301.0-429.0-225.0-228.0-122.0-1007.0-482.0-535.0-604.0-476.0-418.0-505.0-657.0-560.0-902.0-384.077.0
us-gaap:PaymentsToAcquireProductiveAssets NANANA153.0NANANA508.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
us-gaap:NetCashProvidedByUsedInFinancingActivities ▄▆▆▆▆▆█▅▇▆▇▅▅▅▆▆▅▆▆▁▄▅▄▄▆▅▅▆▆▄▅▆▆▅▆▆▆█▅▆▆▆▆▇▆▆-1199.0-190.0-314.0-143.0-178.0-94.0786.0-571.0131.0-393.0121.0-538.0-619.0-959.0-29.0-457.0-750.0-388.0-448.0-2735.0-1210.0-913.0-1014.0-980.0-35.0-574.0-740.0-357.0-312.0-1177.0-716.0-363.0-355.0-629.0-209.0-166.0-332.0592.0-805.0-46.0-72.0-57.0-175.0346.0-62.0-111.0
us-gaap:PaymentsForRepurchaseOfCommonStock NANA0.00.00.0105.0232.0301.0150.0257.0347.0397.0683.0800.0388.01019.0645.0400.0343.02369.0812.0703.01323.0812.0616.0477.0183.0224.0175.01901.01075.0209.0NANA140.0194.0NANANANANANANANANANA
 us-gaap:PaymentsForRepurchaseOfCommonStock us-gaap:CounterpartyName,us-gaap:ShareRepurchaseProgram glw:Samsung,glw:ShareRepurchaseAgreementNANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:PaymentsForRepurchaseOfCommonStock us-gaap:CounterpartyName,us-gaap:ShareRepurchaseProgram,us-gaap:SubsequentEventType glw:Samsung,glw:ShareRepurchaseAgreement,us-gaap:SubsequentEventNANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31

Common Stock Value

us-gaap:CommonStockValue

us-gaap:CommonStockValue


Common
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value907864863861860859859859858857857856855854854853852850846844842841840840840840836836835833831829828826825824823822818818817817813808
Percentage of CommonStockValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets3.02.92.82.83.13.13.03.13.13.13.13.23.33.23.13.03.13.03.02.92.73.02.92.92.82.92.82.82.82.82.92.92.92.92.82.82.92.92.92.92.93.13.13.8

us-gaap:CommonStockValue us-gaap:StatementEquityComponents

us-gaap:CommonStock


Common
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value863859857854846840836831825818813
Percentage of CommonStockValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets2.83.03.13.13.02.92.82.92.82.93.1
Percentage of Assets us-gaap:CommonStock0.00.00.00.00.00.00.00.00.00.00.0

Common Stock Shares Issued

us-gaap:CommonStockSharesIssued

us-gaap:CommonStockSharesIssued


Common
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value172917261722172017191718171717171715171317001711170917081706170517001691168916821681168016801679167216711669166716611658165616531649164716451644163616351634163316261616
Percentage of CommonStockSharesIssued100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:CommonStockSharesIssued us-gaap:StatementEquityComponents

us-gaap:CommonStock


Common
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value17261718171317081691168116721661164916361626
Percentage of CommonStockSharesIssued100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Preferred Stock Shares Issued

us-gaap:PreferredStockSharesIssued

us-gaap:PreferredStockSharesIssued


Preferred
Period End2021-06-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
Value02300.02300.02300.02300.02300.02300.02300.02300.02300.02300.02300.02300.02300.02300.02300.02300.02300.02300.02300.02300.02300.02300.02300.02300.02300.02300.0
Percentage of PreferredStockSharesIssued0.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Preferred Stock Shares Authorized

us-gaap:PreferredStockSharesAuthorized

us-gaap:PreferredStockSharesAuthorized


Preferred
Period End2021-06-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-31
Value03100.03100.03100.03100.03100.03100.03100.03100.03100.03100.03100.03100.03100.03100.03100.03100.03100.03100.03100.03100.03100.03100.03100.0
Percentage of PreferredStockSharesAuthorized0.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Weighted Average Number Of Diluted Shares Outstanding

us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding

us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding


Weighted
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-30
Value8448988897597608977899089309438481009103493611021182110312181371139414111315137014631478148114940.001518153015880.00159115891580
Percentage of WeightedAverageNumberOfDilutedSharesOutstanding100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Weighted Average Number Of Shares Outstanding Basic

us-gaap:WeightedAverageNumberOfSharesOutstandingBasic

us-gaap:WeightedAverageNumberOfSharesOutstandingBasic


Weighted
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-31
Value8447667607597607757817848058198488839089259781059110312101246126612841302135914541469147214830.0015061516156915681565155715581555
Percentage of WeightedAverageNumberOfSharesOutstandingBasic100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount

us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount

us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount


Antidilutive
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302018-09-302018-06-302018-03-312017-09-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-30
Value331.03.01531262.01171.02.01261.011727201621442014231351383638474442
Percentage of AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecurities

us-gaap:StockCompensationPlan


Antidilutive
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302018-09-302018-06-302018-03-312017-09-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-31
Value241.03.038112.02.01.02.01151.02.0132047292014232029363847
Percentage of AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount72.7100.0100.024.88.7100.01.7100.0100.091.3100.01.748.1100.029.020.1100.0100.0100.014.821.0100.0100.0100.0

Earnings Per Share Basic

us-gaap:EarningsPerShareBasic

us-gaap:EarningsPerShareBasic


Earnings
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value0.290.53-0.13-0.160.010.40.090.610.270.750.87-0.72-1.660.410.460.071.640.272.06-0.360.170.160.380.30.760.770.110.210.30.280.430.330.110.350.310.30.320.520.480.480.670.50.590.52
Percentage of EarningsPerShareBasic100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Earnings Per Share Diluted

us-gaap:EarningsPerShareDiluted

us-gaap:EarningsPerShareDiluted


Earnings
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value0.30.48-0.13-0.160.040.380.090.550.260.670.78-0.72-1.660.390.420.071.470.261.87-0.360.170.150.360.290.70.720.110.20.30.280.430.330.10.350.30.30.310.510.470.470.660.50.580.52
Percentage of EarningsPerShareDiluted100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Allocated Share Based Compensation Expense

us-gaap:AllocatedShareBasedCompensationExpense

us-gaap:AllocatedShareBasedCompensationExpense


Allocated
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-30
Value443480625510.01313211110.011149.010.0149.010.0111510.0111913
Percentage of AllocatedShareBasedCompensationExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.31.00.02.12.10.40.00.40.70.40.40.40.60.40.40.60.40.40.50.60.40.50.70.5

us-gaap:AllocatedShareBasedCompensationExpense us-gaap:TitleOfIndividual

srt:ExecutiveOfficer


Allocated
Period End2020-09-30
Value49
Percentage of AllocatedShareBasedCompensationExpense79.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:ExecutiveOfficer0.0

Comprehensive Income Net Of Tax

us-gaap:ComprehensiveIncomeNetOfTax

us-gaap:ComprehensiveIncomeNetOfTax


Comprehensive
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-31
Value489247646725-6.0-422.024880128343418524280-324.0-1108.04454345666115352645392160.04611581703404241875407213826.0-147.0764487413
Percentage of ComprehensiveIncomeNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax14.07.50.024.2-0.2-17.60.02.74.412.213.817.410.2-13.0-42.017.117.423.824.721.3112.11.99.70.019.77.07.113.417.18.227.634.919.30.3-6.837.525.521.5

Cost Of Revenue

us-gaap:CostOfRevenue

us-gaap:CostOfRevenue


Cost
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value218621342137200018051830196319171875171318331776167515451603155115121418148614661409128313741380136813361408145114501354118611661099104413481159111111061062109711161049998878885822
Percentage of CostOfRevenue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax62.464.90.066.670.576.50.065.363.860.960.459.061.061.860.859.560.659.760.058.559.762.761.660.758.459.058.657.158.459.260.656.455.457.662.856.958.257.60.052.955.754.60.054.851.752.9

Gains Losses On Extinguishment Of Debt

us-gaap:GainsLossesOnExtinguishmentOfDebt us-gaap:ExtinguishmentOfDebt

us-gaap:GainsLossesOnExtinguishmentOfDebt

glw:DebenturesDueIn2022


Gains
Period End2021-06-30
Value-11.0
Percentage of GainsLossesOnExtinguishmentOfDebt100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax glw:DebenturesDueIn20220.0

Gross Profit

us-gaap:GrossProfit

us-gaap:GrossProfit


Gross
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value131511561213100175656185410171065109912021232107295510341056985957990104195176485789297592999610891032935770901883770798879797814825978889874767724827731
Percentage of GrossProfit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax37.635.10.033.429.523.50.034.736.239.139.641.039.038.239.240.539.440.340.041.540.337.338.439.341.641.041.442.941.640.839.443.644.642.437.243.141.842.40.047.144.345.40.045.248.347.1

us-gaap:GrossProfit us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName

glw:AffiliatedCompanies


Gross
Period End2020-12-312020-09-302020-06-302019-12-312019-09-302019-06-30
Value49217.0-126.06164
Percentage of GrossProfit4.02.10.9-14.86.06.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.00.70.30.02.12.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax glw:AffiliatedCompanies0.00.00.00.00.00.0

Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value516825330450-49.0-108.017408216575346758864-465.056647959220
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax14.725.10.015.0-1.9-4.50.013.97.320.411.425.231.5-18.621.518.423.70.8

Income Tax Expense Benefit

us-gaap:IncomeTaxExpenseBenefit

us-gaap:IncomeTaxExpenseBenefit


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value67226782322-12.0-15.0711247654133126124197889153-66.0832-27.0-504.0-304.0-55.06.0110863493951721801461411913428879311161110123114145143197
Percentage of IncomeTaxExpenseBenefit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.96.90.00.80.9-0.50.02.44.22.71.84.44.65.075.03.46.1-2.833.6-1.1-21.4-14.9-2.50.34.73.814.515.66.97.97.56.89.61.91.34.34.95.80.05.36.15.90.00.91.86.2

us-gaap:IncomeTaxExpenseBenefit us-gaap:ConsolidationItems

us-gaap:MaterialReconcilingItems


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value-91.0-90.0-82.0-113.0-55.0-74.0-107.0-51.0-2.0-35.0-84.0-6.016321626-25.040-179.0
Percentage of IncomeTaxExpenseBenefit-135.8-39.8-105.1-491.3-250.0616.7713.3-71.8-1.6-46.1-155.6-4.512.725.882.2-28.126.1271.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-2.6-2.70.0-3.8-2.1-3.10.0-1.7-0.1-1.2-2.8-0.20.61.361.7-1.01.6-7.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:MaterialReconcilingItems0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:OperatingSegments


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-30
Value-158.0-136.016013677629212212611113613911092198167159168150172-148.095138185205190194212181
Percentage of IncomeTaxExpenseBenefit-235.8-60.2205.1591.3350.0-516.7-613.3171.8101.6146.1251.9104.587.374.210.0187.6103.9-254.518.0-637.029.4-31.2-250.93083.3186.4220.955.653.7105.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-4.5-4.10.04.53.02.60.04.24.33.94.54.64.03.77.56.46.47.16.16.9-6.34.66.28.18.78.48.18.37.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments0.00.00.00.00.00.00.00.00.00.00.04.64.03.70.06.36.36.90.00.00.00.00.00.00.00.00.00.00.0

us-gaap:IncomeTaxExpenseBenefit us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, glw:DisplayProducts


Income
Period End2021-06-302021-03-312020-06-302020-03-31
Value-64.0-56.0-41.0-40.0
Percentage of IncomeTaxExpenseBenefit-95.5-24.8-186.4333.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-1.8-1.7-1.6-1.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments glw:DisplayProducts0.00.00.00.0

us-gaap:OperatingSegments, glw:DisplayTechnologies


Income
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-30
Value57524140474955556457514912482861029598-86.093112119136132155136119
Percentage of IncomeTaxExpenseBenefit73.1226.1186.4-333.3-313.369.044.472.4118.542.940.539.56.392.156.2-154.511.4-363.017.1-30.6-203.61983.3123.6153.544.434.469.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.01.71.61.70.01.71.92.02.11.91.92.04.73.13.44.33.83.9-3.64.55.05.25.85.86.45.44.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments glw:DisplayTechnologies0.00.00.00.00.00.00.00.00.06.76.56.60.010.311.113.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:OperatingSegments, glw:EnvironmentalTechnologies


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-30
Value-21.0-20.025180.09.01721171511161414221716141317-19.01614192223172823
Percentage of IncomeTaxExpenseBenefit-31.3-8.832.178.30.0-75.0-113.329.613.719.720.412.011.111.31.119.110.5-21.21.6-63.03.8-5.3-25.5316.720.026.74.97.113.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.6-0.60.00.60.00.40.00.70.60.50.40.50.50.60.80.70.60.60.50.7-0.80.80.60.80.91.00.71.10.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments glw:EnvironmentalTechnologies0.00.00.00.00.00.00.00.00.00.00.04.84.44.30.06.16.15.10.06.4-7.36.10.07.48.58.20.09.98.1

us-gaap:OperatingSegments, glw:LifeScienceProducts


Income
Period End2021-06-302021-03-312020-06-302020-03-31
Value-14.0-13.0-8.0-10.0
Percentage of IncomeTaxExpenseBenefit-20.9-5.8-36.483.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.4-0.4-0.3-0.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments glw:LifeScienceProducts0.00.00.00.0

us-gaap:OperatingSegments, glw:LifeSciences


Income
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-30
Value118.08.010.010.011118.08.08.08.07.08.08.07.08.06.08.0-8.06.04.09.09.08.07.09.09.0
Percentage of IncomeTaxExpenseBenefit14.134.836.4-83.3-66.715.58.910.514.86.06.35.60.49.04.6-12.10.7-29.61.6-2.0-7.3150.08.29.32.02.35.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.00.30.30.40.00.40.40.30.30.30.30.30.30.30.30.30.20.3-0.30.30.20.40.40.40.30.40.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments glw:LifeSciences0.00.00.00.00.00.00.00.00.03.53.33.00.03.63.23.80.03.7-3.72.90.04.34.34.10.04.24.0

us-gaap:OperatingSegments, glw:OpticalCommunications


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-30
Value-40.0-31.03832238.01735433946464130395252453049-39.01115343729263531
Percentage of IncomeTaxExpenseBenefit-59.7-13.748.7139.1104.5-66.7-113.349.334.751.385.234.632.524.22.058.434.0-68.23.6-181.57.7-3.6-27.3566.733.633.77.48.918.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-1.1-0.90.01.10.90.30.01.21.51.41.51.51.51.21.52.02.11.91.22.0-1.70.50.71.51.61.31.11.41.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments glw:OpticalCommunications0.00.00.00.00.00.00.00.00.00.00.04.14.03.40.05.75.95.50.06.2-5.01.80.04.64.64.20.05.04.5

us-gaap:OperatingSegments, glw:SpecialtyMaterials


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-30
Value-22.0-24.0373824142525181323311712363628243321-19.01219232221132521
Percentage of IncomeTaxExpenseBenefit-32.8-10.647.4165.2109.1-116.7-166.735.214.517.142.623.313.59.71.840.418.3-36.44.0-77.83.8-3.9-34.5383.320.024.43.76.312.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.6-0.70.01.30.90.60.00.90.60.50.81.00.60.51.41.41.11.01.30.8-0.80.60.91.00.90.90.51.00.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments glw:SpecialtyMaterials0.00.00.00.00.00.00.00.00.00.00.06.85.04.30.09.78.38.00.07.1-7.15.30.08.08.17.70.07.67.0

us-gaap:OperatingSegments, us-gaap:AllOtherSegments


Income
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-30
Value3.08.0-12.0-19.0-19.0-19.0-18.0-19.0-19.0-21.0-20.0-28.0-30.0-25.0-27.0-21.023-43.0-26.0-19.0-21.0-23.0-24.0-21.0-22.0
Percentage of IncomeTaxExpenseBenefit4.53.5-52.2-86.4158.3-26.8-14.5-25.0-14.3-16.7-16.1-31.5-19.637.9-3.277.8-4.614.147.3-316.7-19.1-26.7-6.9-5.3-12.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.10.2-0.4-0.7-0.8-0.6-0.6-0.7-0.6-0.8-0.8-1.1-1.2-1.1-1.1-0.81.0-2.1-1.2-0.8-0.9-1.0-1.0-0.8-0.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments us-gaap:AllOtherSegments0.00.00.00.00.00.00.00.0-34.5-41.2-40.0-56.0-63.8-69.40.0-56.862.2-113.20.0-158.3-190.9-255.60.0-210.0-733.3

Interest And Debt Expense

us-gaap:InterestAndDebtExpense

us-gaap:InterestAndDebtExpense


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value78777570676460555452514543524337383737414041393833303231303028282836343324201723222728292626
Percentage of InterestAndDebtExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax2.22.30.02.32.62.70.01.91.81.81.71.51.62.11.61.41.51.61.51.61.72.01.71.71.41.31.31.21.21.31.41.41.42.01.61.61.31.00.01.11.11.40.01.81.51.7

us-gaap:InterestAndDebtExpense us-gaap:ConsolidationItems

us-gaap:MaterialReconcilingItems


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value6774726764585551494538383439312727
Percentage of InterestAndDebtExpense85.996.196.095.795.590.691.792.790.786.574.584.479.175.072.173.071.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.92.20.02.22.52.40.01.71.71.61.31.31.21.61.21.01.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:MaterialReconcilingItems0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Litigation Settlement Expense

us-gaap:LitigationSettlementExpense us-gaap:LitigationCase, us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName

us-gaap:LitigationSettlementExpense

glw:DowCorningBreastImplantLitigation, glw:DowCorningCorporation


Litigation
Period End2021-06-302021-03-31
Value0.01800
Percentage of LitigationSettlementExpense0.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.054.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax glw:DowCorningBreastImplantLitigation glw:DowCorningCorporation0.00.0

Net Income Loss

us-gaap:NetIncomeLoss

us-gaap:NetIncomeLoss


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value449599252427-71.0-96.03233792499292625738-589.0-1412.03904398615722842207-368.022421249640798810141693014214086384941555214624624918117557481044785913816
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax12.818.20.014.2-2.8-4.00.011.53.117.79.620.826.9-23.6-53.515.017.63.663.511.393.5-18.010.09.321.218.041.139.96.813.121.519.732.227.27.225.624.224.10.039.137.738.90.049.053.352.5

us-gaap:NetIncomeLoss us-gaap:ConsolidationItems

us-gaap:MaterialReconcilingItems


Net
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value252427-71.0-96.03233792499292625738-589.0
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.014.2-2.8-4.00.011.53.117.79.620.826.9-23.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:MaterialReconcilingItems0.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:OperatingSegments


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-30
Value595513600504288236359454475413506520413345280373356374371403318213282389443405567533388
Percentage of NetIncomeLoss132.585.6238.1118.0-405.6-245.81121.9134.7516.382.8173.383.256.0-58.6-19.895.681.1434.923.6141.914.4-57.9125.9183.589.399.557.452.6229.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax17.015.60.016.811.29.90.015.516.214.716.717.315.013.810.614.314.315.715.016.113.510.412.617.118.917.923.621.015.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments0.00.00.00.00.00.00.00.00.00.00.017.115.013.70.014.214.115.40.00.00.00.00.00.00.00.00.00.00.0

us-gaap:NetIncomeLoss us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, glw:DisplayProducts


Net
Period End2021-06-302021-03-312020-06-302020-03-31
Value248213152152
Percentage of NetIncomeLoss55.235.6-214.1-158.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax7.16.55.96.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments glw:DisplayProducts0.00.00.00.0

us-gaap:OperatingSegments, glw:DisplayTechnologies


Net
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-30
Value217196152152180185213208240218192185168203211249243279204209243255303294518387282
Percentage of NetIncomeLoss86.145.9-214.1-158.3562.554.9231.541.782.234.926.0-31.4-11.952.148.1289.515.598.29.2-56.8108.5120.361.172.252.438.2166.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.06.55.96.40.06.37.27.47.97.27.07.46.47.88.510.59.811.18.610.210.911.212.913.021.515.211.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments glw:DisplayTechnologies0.00.00.00.00.00.00.00.00.025.624.624.80.025.527.231.80.00.00.00.00.00.00.00.00.00.00.0

us-gaap:OperatingSegments, glw:EnvironmentalTechnologies


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-30
Value817493690.0356479655542605452303432312735373429384648315747
Percentage of NetIncomeLoss18.012.436.916.2-0.0-36.5200.023.470.711.014.49.67.3-8.8-2.18.77.336.01.712.31.7-9.212.917.99.311.83.15.627.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax2.32.20.02.30.01.50.02.72.22.01.42.02.02.11.11.31.31.31.11.41.61.71.31.72.02.11.32.21.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments glw:EnvironmentalTechnologies0.00.00.00.00.00.00.00.00.00.00.018.117.016.10.012.312.211.30.013.314.312.90.014.817.717.00.020.216.5

us-gaap:OperatingSegments, glw:LifeScienceProducts


Net
Period End2021-06-302021-03-312020-06-302020-03-31
Value52483138
Percentage of NetIncomeLoss11.68.0-43.7-39.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.51.51.21.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments glw:LifeScienceProducts0.00.00.00.0

us-gaap:OperatingSegments, glw:LifeSciences


Net
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-30
Value42283138384140312930312716171417131617129.0181816131918
Percentage of NetIncomeLoss16.76.6-43.7-39.6118.812.243.56.29.94.84.2-4.6-1.14.43.219.80.85.60.8-3.34.08.53.63.91.31.910.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.00.91.21.60.01.41.41.11.01.01.11.10.60.70.60.70.50.60.70.60.40.80.80.70.50.70.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments glw:LifeSciences0.00.00.00.00.00.00.00.00.013.012.711.60.07.66.38.10.07.57.95.90.08.58.58.10.08.98.1

us-gaap:OperatingSegments, glw:NonReportableSegments


Net
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value-29.0-50.0-66.0-69.0-79.0-70.0-68.0-72.0-57.0-72.0-78.0-74.0-43.0-64.0-62.0-60.0
Percentage of NetIncomeLoss-11.5-11.793.071.9-246.9-20.8-73.9-14.4-19.5-11.5-10.612.63.0-16.4-14.1-69.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.0-1.7-2.6-2.90.0-2.4-2.3-2.6-1.9-2.4-2.8-3.0-1.6-2.5-2.5-2.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments glw:NonReportableSegments0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:OperatingSegments, glw:NonreportableSegments


Net
Period End2021-06-302021-03-312020-06-302020-03-31
Value-15.0-24.0-66.0-69.0
Percentage of NetIncomeLoss-3.3-4.093.071.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.4-0.7-2.6-2.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments glw:NonreportableSegments0.00.00.00.0

us-gaap:OperatingSegments, glw:OpticalCommunications


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-30
Value14811114111581296212715814216516815010956102101827378771733707757386861
Percentage of NetIncomeLoss33.018.556.026.9-114.1-30.2193.837.7171.728.556.526.920.3-18.5-4.026.223.095.34.627.53.5-4.614.733.015.514.03.86.736.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax4.23.40.03.83.21.20.04.35.45.05.45.65.54.42.13.94.03.52.93.13.30.81.53.13.32.51.62.72.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments glw:OpticalCommunications0.00.00.00.00.00.00.00.00.00.00.015.014.712.30.011.111.510.00.09.89.82.80.09.49.68.20.09.78.9

us-gaap:OperatingSegments, glw:ReportableSegments


Net
Period End2021-06-302021-03-312020-06-302020-03-31
Value610537354305
Percentage of NetIncomeLoss135.989.6-498.6-317.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax17.416.313.812.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments glw:ReportableSegments0.00.00.00.0

us-gaap:OperatingSegments, glw:ReportableSegments1


Net
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value629554354305438524543485563592491419154494484480
Percentage of NetIncomeLoss249.6129.7-498.6-317.71368.8155.5590.297.2192.894.766.5-71.1-10.9126.7110.3558.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.018.513.812.80.017.918.517.218.619.717.916.85.818.919.420.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments glw:ReportableSegments10.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:OperatingSegments, glw:SpecialtyMaterials


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-30
Value8191136146905194926749871166446737256486842382639464438254339
Percentage of NetIncomeLoss18.015.254.034.2-126.8-53.1293.827.372.89.829.818.68.7-7.8-5.218.512.855.84.314.81.7-7.117.421.78.99.32.54.223.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax2.32.80.04.93.52.10.03.12.31.72.93.92.31.82.82.82.22.02.71.71.61.31.72.01.91.71.01.71.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments glw:SpecialtyMaterials0.00.00.00.00.00.00.00.00.00.00.025.318.716.50.019.316.616.00.014.214.311.50.016.016.214.00.013.113.1

us-gaap:OperatingSegments, us-gaap:AllOtherSegments


Net
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-30
Value-15.0-24.0-50.0-66.0-69.0-70.0-68.0-72.0-72.0-78.0-74.0-55.0-58.0-53.0-53.0-47.0-55.0-85.0-71.0-38.0-45.0-48.0-58.0-41.0-59.0
Percentage of NetIncomeLoss-3.3-4.0-11.793.071.9-20.8-73.9-14.4-11.5-10.612.6-14.1-13.2-61.6-3.4-16.5-2.523.1-31.7-17.9-9.1-11.8-5.9-4.0-34.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.4-0.7-1.7-2.6-2.9-2.4-2.3-2.6-2.4-2.8-3.0-2.1-2.3-2.2-2.1-1.9-2.3-4.2-3.2-1.7-1.9-2.1-2.4-1.6-2.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments us-gaap:AllOtherSegments0.00.00.00.00.00.00.00.0-130.9-152.9-148.0-110.0-123.4-147.20.0-127.0-148.6-223.70.0-316.7-409.1-533.30.0-410.0-1966.7

Net Income Loss Available To Common Stockholders Basic

us-gaap:NetIncomeLossAvailableToCommonStockholdersBasic

us-gaap:NetIncomeLossAvailableToCommonStockholdersBasic


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value-354.0575227403-96.0-120.07.031368475267601714-613.0-1437.03664156215472602183-392.0199188472383964990145280421408638494
Percentage of NetIncomeLossAvailableToCommonStockholdersBasic100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-10.117.50.013.4-3.7-5.00.010.72.316.98.820.026.0-24.5-54.514.016.62.662.510.492.5-19.18.98.320.116.940.139.05.812.221.519.732.227.2

Net Income Loss Available To Common Stockholders Diluted

us-gaap:NetIncomeLossAvailableToCommonStockholdersDiluted

us-gaap:NetIncomeLossAvailableToCommonStockholdersDiluted


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value-354.0599227427-96.0-120.03233768499292625738-613.0-1510.03904396215722842207-392.022418849640798810141452804214086384942835214624624918117557481044785913816
Percentage of NetIncomeLossAvailableToCommonStockholdersDiluted100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-10.118.20.014.2-3.7-5.00.011.52.317.79.620.826.9-24.5-57.315.017.62.663.511.393.5-19.110.08.321.218.041.139.95.812.221.519.732.227.213.225.624.224.10.039.137.738.90.049.053.352.5

Operating Income Loss

us-gaap:OperatingIncomeLoss

us-gaap:OperatingIncomeLoss


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value575502476257-103.0-121.01473653744204645223951943724533814244325352471778739243141253662046031518443942432479393309342223587424460649319430403
Percentage of OperatingIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax16.415.30.08.6-4.0-5.10.012.412.714.915.317.414.47.814.117.415.317.917.421.310.58.63.917.318.418.222.324.418.513.89.421.221.417.93.719.316.217.80.028.321.123.90.019.925.125.9

Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax

us-gaap:OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax

us-gaap:OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value40-363.045228358-265.0167-238.038-110.0107-128.0-428.026428953-46.0450-973.0245196428-113.0-181.0-40.0-256.0-534.0-676.0269-132.0-198.0317-296.0-505.0
Percentage of OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.1-11.00.09.42.3-11.10.0-8.11.3-3.93.5-4.3-15.610.611.02.0-1.818.9-39.39.88.320.9-5.1-8.0-1.7-11.3-22.2-26.610.8-5.8-10.115.3-14.9-27.8

Other Comprehensive Income Loss Net Of Tax

us-gaap:OtherComprehensiveIncomeLossNetOfTax

us-gaap:OtherComprehensiveIncomeLossNetOfTax


Other
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-30
Value41-353.029965-327.0-257.036-156.0-101.0-459.0265119313-256.0-488.0-313.02414.0-61.0-191.0-371.0241
Percentage of OtherComprehensiveIncomeLossNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.2-10.710.02.5-13.7-8.81.2-5.5-3.4-16.710.66.115.1-12.9-26.9-14.611.80.2-3.20.0-17.912.0

us-gaap:OtherComprehensiveIncomeLossNetOfTax us-gaap:StatementEquityComponents

us-gaap:AccumulatedOtherComprehensiveIncome


Other
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value40-352.029865-326.0-257.036-156.0-101.0-458.0265
Percentage of OtherComprehensiveIncomeLossNetOfTax97.699.799.7100.099.7100.0100.0100.0100.099.8100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.1-10.79.92.5-13.6-8.81.2-5.5-3.4-16.710.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:AccumulatedOtherComprehensiveIncome0.00.00.00.00.00.00.00.00.00.00.0

us-gaap:NoncontrollingInterest


Other
Period End2021-06-302021-03-312020-09-302020-03-312018-06-30
Value1.0-1.01.0-1.0-1.0
Percentage of OtherComprehensiveIncomeLossNetOfTax2.40.30.30.30.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.0-0.00.0-0.0-0.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:NoncontrollingInterest0.00.00.00.00.0

us-gaap:Parent


Other
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value40-352.029865-326.0-257.036-156.0-101.0-458.0265
Percentage of OtherComprehensiveIncomeLossNetOfTax97.699.799.7100.099.7100.0100.0100.0100.099.8100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.1-10.79.92.5-13.6-8.81.2-5.5-3.4-16.710.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:Parent0.00.00.00.00.00.00.00.00.00.00.0

Other Nonoperating Income Expense

us-gaap:OtherNonoperatingIncomeExpense

us-gaap:OtherNonoperatingIncomeExpense


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value7.011711-62.02.0-11.0-96.0-15.0-35.0-9.0-205.01214-37.0-60.0-4.0-18.0-21.0-14.0-28.0-26.021-21.0-27.0-23.0-21.0805720-155.024338-1.026565415.08.02921274327542.06464
Percentage of OtherNonoperatingIncomeExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.23.60.0-2.10.1-0.50.0-0.5-1.2-0.3-6.80.40.5-1.5-2.3-0.2-0.7-0.9-0.6-1.1-1.11.0-0.9-1.2-1.0-0.933.528.3-6.21.017.3-0.013.43.61.90.20.41.50.01.32.11.40.00.13.74.1

Preferred Stock Dividends Income Statement Impact

us-gaap:PreferredStockDividendsIncomeStatementImpact

us-gaap:PreferredStockDividendsIncomeStatementImpact


Preferred
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value0.0242524252425242424252424242524242425242424
Percentage of PreferredStockDividendsIncomeStatementImpact0.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.00.70.00.81.01.00.00.80.80.90.80.80.91.00.90.91.01.01.01.01.01.2

Profit Loss

us-gaap:ProfitLoss

us-gaap:ProfitLoss


Profit
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value454601432-65.0-96.0341105505633744-586.05614655014342195394724984908117557471044785912815
Percentage of ProfitLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax13.018.314.4-2.5-4.011.63.618.021.027.1-23.428.722.525.323.910.226.424.725.90.039.137.738.80.049.053.352.5

us-gaap:ProfitLoss us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName

glw:AffiliatedCompanies


Profit
Period End2020-12-312020-09-302020-06-302019-12-312019-09-302019-06-30
Value-26.0-192.0163-115.04676
Percentage of ProfitLoss0.0-44.4-250.80.013.572.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.0-6.46.40.01.62.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax glw:AffiliatedCompanies0.00.00.00.00.00.0

glw:HSG


Profit
Period End2020-12-312020-09-302020-06-302019-12-312019-09-302019-06-30
Value0.0-154.0163-111.04271
Percentage of ProfitLoss0.0-35.6-250.80.012.367.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.0-5.16.40.01.42.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax glw:HSG0.00.00.00.00.00.0

us-gaap:ProfitLoss us-gaap:StatementEquityComponents

us-gaap:NoncontrollingInterest


Profit
Period End2021-06-302021-03-312020-09-302020-06-302019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value5.02.05.06.04.0136.08.06.03.0
Percentage of ProfitLoss1.10.31.2-9.21.212.41.21.30.8-0.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.10.10.20.20.10.40.20.30.20.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:NoncontrollingInterest0.00.00.00.00.00.00.00.00.00.0

us-gaap:Parent


Profit
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value449599427-71.0-96.033792499625738-589.0
Percentage of ProfitLoss98.999.798.8109.2100.098.887.698.898.799.2100.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax12.818.214.2-2.8-4.011.53.117.720.826.9-23.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:Parent0.00.00.00.00.00.00.00.00.00.00.0

us-gaap:RetainedEarnings


Profit
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value449599427-71.0-96.033792499625738-589.0
Percentage of ProfitLoss98.999.798.8109.2100.098.887.698.898.799.2100.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax12.818.214.2-2.8-4.011.53.117.720.826.9-23.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.00.00.0

Revenue From Contract With Customer Excluding Assessed Tax

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value3501329033503001256123912817293429402812303530082747250026372607249723752476250723602047223122722343226524042540248222891956206719821814214620381908192018872075200519231765160217121553
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Revenues

us-gaap:Revenues

us-gaap:Revenues


Revenues
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value3501329033503001256123912817293429402812303530082747250026372607249723752476250723602047223122722343226524042540248222891956206719821814214620381908192018872075200519231765160217121553
Percentage of Revenues100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:Revenues us-gaap:ProductOrService

glw:AllOtherProducts


Revenuesus-gaap:
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value247996257705353546055515053504736
Percentage of Revenues7.43.32.42.42.51.81.81.92.01.81.92.02.01.91.91.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax7.43.32.42.42.51.81.81.92.01.81.92.02.01.91.91.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax glw:AllOtherProducts0.00.00.00.00.00.00.00.00.0100.0100.0100.00.0100.0100.0100.0

glw:DisplayProducts


Revenuesus-gaap:
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value934888866834744633785780820795853815768732747767747736
Percentage of Revenues26.727.025.927.829.126.527.926.627.928.328.127.128.029.328.329.429.931.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax26.727.025.927.829.126.527.926.627.928.328.127.128.029.328.329.429.931.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax glw:DisplayProducts0.00.00.00.00.00.00.00.00.00.00.0100.0100.0100.00.0100.0100.0100.0

glw:EnvironmentalSubstrateAndFilterProducts


Revenuesus-gaap:
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value409442442369215307356380353351319331317322291277263275
Percentage of Revenues11.713.413.212.38.412.812.613.012.012.510.511.011.512.911.010.610.511.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax11.713.413.212.38.412.812.613.012.012.510.511.011.512.911.010.610.511.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax glw:EnvironmentalSubstrateAndFilterProducts0.00.00.00.00.00.00.00.00.00.00.0100.0100.0100.00.0100.0100.0100.0

glw:LifeScienceProducts


Revenuesus-gaap:
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value312301274220236251251250255239238231245232225223221210
Percentage of Revenues8.99.18.27.39.210.58.98.58.78.57.87.78.99.38.58.68.98.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax8.99.18.27.39.210.58.98.58.78.57.87.78.99.38.58.68.98.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax glw:LifeScienceProducts0.00.00.00.00.00.00.00.00.00.00.0100.0100.0100.00.0100.0100.0100.0

glw:SpecialtyGlassProducts


Revenuesus-gaap:
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value483451545570417352453463369309399459343278393373337300
Percentage of Revenues13.813.716.319.016.314.716.115.812.611.013.115.312.511.114.914.313.512.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax13.813.716.319.016.314.716.115.812.611.013.115.312.511.114.914.313.512.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax glw:SpecialtyGlassProducts0.00.00.00.00.00.00.00.00.00.00.0100.0100.0100.00.0100.0100.0100.0

glw:TelecommunicationProducts


Revenuesus-gaap:
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value1075937976909887791902100810901064116611171023886928917882818
Percentage of Revenues30.728.529.130.334.633.132.034.437.137.838.437.137.235.435.235.235.334.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax30.728.529.130.334.633.132.034.437.137.838.437.137.235.435.235.235.334.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax glw:TelecommunicationProducts0.00.00.00.00.00.00.00.00.00.00.0100.0100.0100.00.0100.0100.0100.0

us-gaap:ProductAndServiceOther


Revenuesus-gaap:
Period End2021-06-302021-03-312020-06-302020-03-31
Value2882716257
Percentage of Revenues8.28.22.42.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax8.28.22.42.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ProductAndServiceOther0.00.00.00.0

us-gaap:Revenues us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName

glw:AffiliatedCompanies


Revenuesus-gaap:
Period End2020-12-312020-09-302020-06-302019-12-312019-09-302019-06-30
Value77878160942200181
Percentage of Revenues23.22.66.233.46.86.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax23.22.66.233.46.86.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax glw:AffiliatedCompanies0.00.00.00.00.00.0

Selling General And Administrative Expense

us-gaap:SellingGeneralAndAdministrativeExpense

us-gaap:SellingGeneralAndAdministrativeExpense


Selling
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value465400471480401395401369414401447439412501400372379316368302499303563307337316242256318395332265266259356294291279283216284250284250246235
Percentage of SellingGeneralAndAdministrativeExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax13.312.214.116.015.716.514.212.614.114.314.714.615.020.015.214.315.213.314.912.021.114.825.213.514.414.010.110.112.817.317.012.813.414.316.614.415.314.515.010.414.213.016.115.614.415.1

Assets

us-gaap:Assets

us-gaap:Assets


Assets
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-312008-12-31
Value298063014330775302672754627859288982732927575273212750526392261402683427494280942783028305278992880930653279452854728898298882932330063298152983229544284782871428389285952937529410287542848927848281732782526660258332129519256
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:Assets us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, glw:NonReportableSegments


Assetsus-gaap:
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-31
Value21578911018824750738
Percentage of Assets7.03.13.73.02.72.6
Percentage of Assets7.03.13.73.02.72.6
Percentage of Assets us-gaap:OperatingSegments glw:NonReportableSegments100.0100.0100.0100.0100.0100.0

us-gaap:OperatingSegments, glw:ReportableSegments1


Assetsus-gaap:
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-31
Value168651699816230153561341713336
Percentage of Assets54.858.859.055.948.146.7
Percentage of Assets54.858.859.055.948.146.7
Percentage of Assets us-gaap:OperatingSegments glw:ReportableSegments1100.0100.0100.0100.0100.0100.0

Liabilities

us-gaap:Liabilities

us-gaap:Liabilities


Liabilities
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value17664165851732717410154131557215901141951405413615136191241412189123461172410711975099269939110221098199589684882888337951841179658000782572676916693572057842752473527122671964826519630564075700
Percentage of Liabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets59.355.056.357.556.055.955.051.951.049.849.547.046.646.042.638.135.035.135.638.335.835.633.930.529.627.128.026.726.826.525.524.124.425.226.725.625.625.024.123.023.423.624.826.8

Liabilities And Stockholders Equity

us-gaap:LiabilitiesAndStockholdersEquity

us-gaap:LiabilitiesAndStockholdersEquity


Liabilities
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value2980630143307753026727546278592889827329275752732127505263922614026834274942809427830283052789928809306532794528547288982988829323300632981529832295442847828714283892859529375294102875428489278482817327825266602583321295
Percentage of LiabilitiesAndStockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Stockholders Equity

us-gaap:StockholdersEquity

us-gaap:StockholdersEquity


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value1196013369132571266012049121981290713034134251360713792138901387714413156981731718012183081789317721196091791818788199972098321298215792177921763216502116221749213782134421486218392135421317210782164021255203041937515543
Percentage of StockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets40.144.443.141.843.743.844.747.748.749.850.152.653.153.757.161.664.764.764.161.564.064.165.869.270.272.671.873.073.073.374.375.775.374.673.174.374.374.875.776.876.476.275.073.0

Assets Current

us-gaap:AssetsCurrent

us-gaap:AssetsCurrent


Assets
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value76488103800480586846694674636156631163497034663264847663882782548431871890488479107477178826992539868923810238100139864961388919128905392699695951693789801867792649329903788595521
Percentage of AssetsCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets25.726.926.026.624.924.925.822.522.923.225.625.124.828.632.129.430.330.832.429.435.125.729.032.033.031.534.133.633.132.531.231.831.932.433.032.432.634.431.232.933.533.934.325.9

us-gaap:AssetsCurrent us-gaap:ConsolidationItems

us-gaap:MaterialReconcilingItems


Assets
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-31
Value343433013065531560705488
Percentage of AssetsCurrent42.944.243.660.267.166.4
Percentage of Assets11.211.411.119.321.819.2
Percentage of Assets us-gaap:MaterialReconcilingItems0.00.00.00.00.00.0

us-gaap:AssetsCurrent us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName

glw:AffiliatedCompanies


Assets
Period End2020-12-312019-12-31
Value5341566
Percentage of AssetsCurrent6.721.0
Percentage of Assets1.75.4
Percentage of Assets glw:AffiliatedCompanies0.00.0

glw:HSG


Assets
Period End2020-12-312019-12-31
Value8531011
Percentage of AssetsCurrent10.713.5
Percentage of Assets2.83.5
Percentage of Assets glw:HSG0.00.0

Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents


Cash
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-31
Value232028682672251421582025243497111781456235519032023309643175291
Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets7.89.58.78.37.87.38.43.64.35.38.67.27.711.515.719.0

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents dei:LegalEntity

glw:HSG


Cash
Period End2020-09-09
Value75
Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents0.0
Percentage of Assets0.0
Percentage of Assets glw:HSG0.0

Accounts Receivable Net Current

us-gaap:AccountsReceivableNetCurrent

us-gaap:AccountsReceivableNetCurrent


Accounts
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value205719002133209917121708183620242103197419401973184217471807174816401583148116451544138813721479154514871501160116451588125313921296124313021248115711081082118912521107973753
Percentage of AccountsReceivableNetCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets6.96.36.96.96.26.16.47.47.67.27.17.57.06.56.66.25.95.65.35.75.05.04.85.15.25.15.05.45.55.44.44.84.64.34.44.24.03.93.94.24.54.23.83.5

Inventory Net

us-gaap:InventoryNet

us-gaap:InventoryNet


Inventory
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value238723612438258122352347232023372291219020371921189618341712169316161544147115161501145313851374138513311322132713801395127012751240117110511003999955975939917841738579
Percentage of InventoryNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets8.07.87.98.58.18.48.08.68.38.07.47.37.36.86.26.05.85.55.35.34.95.24.94.84.64.54.44.54.64.74.54.44.44.13.63.43.53.43.53.33.33.22.92.7

Other Assets Current

us-gaap:OtherAssetsCurrent

us-gaap:OtherAssetsCurrent


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value8849747618647418668738247397297028357239869919489867198054975587979121072117410911099825604697855706764681619424436479347359364353367371
Percentage of OtherAssetsCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets3.03.22.52.92.73.13.03.02.72.72.63.22.83.73.63.43.52.52.91.71.82.93.23.73.93.73.72.82.02.43.02.52.72.42.11.41.51.71.21.31.31.31.41.7

Noncurrent Assets

us-gaap:NoncurrentAssets us-gaap:ConsolidationItems

us-gaap:NoncurrentAssets

us-gaap:OperatingSegments


Noncurrent
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value2165020278195191785416376
Percentage of NoncurrentAssets100.0100.0100.0100.0100.0
Percentage of Assets70.370.271.064.958.7
Percentage of Assets us-gaap:OperatingSegments0.00.00.00.00.0

us-gaap:NoncurrentAssets us-gaap:StatementGeographical

country:CA


Noncurrent
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-31
Value121126127138142144
Percentage of NoncurrentAssets0.60.60.70.80.90.0
Percentage of Assets0.40.40.50.50.50.5
Percentage of Assets country:CA0.00.00.00.00.00.0

country:CN


Noncurrent
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-31
Value4469381628111955114010361115
Percentage of NoncurrentAssets20.618.814.410.97.00.00.0
Percentage of Assets14.513.210.27.14.13.63.7
Percentage of Assets country:CN0.00.00.00.00.00.00.0

country:DE


Noncurrent
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-31
Value579546508201154189217
Percentage of NoncurrentAssets2.72.72.61.10.90.00.0
Percentage of Assets1.91.91.80.70.60.70.7
Percentage of Assets country:DE0.00.00.00.00.00.00.0

country:JP


Noncurrent
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-31
Value58389311481015100811601311
Percentage of NoncurrentAssets2.74.45.95.76.20.00.0
Percentage of Assets1.93.14.23.73.64.14.4
Percentage of Assets country:JP0.00.00.00.00.00.00.0

country:KR


Noncurrent
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-31
Value3597362537363858341335523595
Percentage of NoncurrentAssets16.617.919.121.620.80.00.0
Percentage of Assets11.712.513.614.012.212.412.0
Percentage of Assets country:KR0.00.00.00.00.00.00.0

country:MX


Noncurrent
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-31
Value23926720017413413550
Percentage of NoncurrentAssets1.11.31.01.00.80.00.0
Percentage of Assets0.80.90.70.60.50.50.2
Percentage of Assets country:MX0.00.00.00.00.00.00.0

country:TW


Noncurrent
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-31
Value2247228023262357234723012005
Percentage of NoncurrentAssets10.411.211.913.214.30.00.0
Percentage of Assets7.37.98.58.68.48.16.7
Percentage of Assets country:TW0.00.00.00.00.00.00.0

country:US


Noncurrent
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-31
Value8718765473836402647382417998
Percentage of NoncurrentAssets40.337.737.835.939.50.00.0
Percentage of Assets28.326.526.823.323.228.926.6
Percentage of Assets country:US0.00.00.00.00.00.00.0

glw:AllOther


Noncurrent
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-31
Value83384046443655
Percentage of NoncurrentAssets0.40.20.20.30.30.00.0
Percentage of Assets0.30.10.10.20.20.10.2
Percentage of Assets glw:AllOther0.00.00.00.00.00.00.0

glw:OtherAsiaPacific


Noncurrent
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-31
Value83868516016798109
Percentage of NoncurrentAssets0.40.40.40.91.00.00.0
Percentage of Assets0.30.30.30.60.60.30.4
Percentage of Assets glw:OtherAsiaPacific0.00.00.00.00.00.00.0

glw:OtherEurope


Noncurrent
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-31
Value9319471155154810479871109
Percentage of NoncurrentAssets4.34.75.98.76.40.00.0
Percentage of Assets3.03.34.25.63.83.53.7
Percentage of Assets glw:OtherEurope0.00.00.00.00.00.00.0

srt:AsiaPacific


Noncurrent
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value10979107001010695418459
Percentage of NoncurrentAssets50.752.851.853.451.7
Percentage of Assets35.737.036.734.730.3
Percentage of Assets srt:AsiaPacific0.00.00.00.00.0

srt:Europe


Noncurrent
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value15101493166313441279
Percentage of NoncurrentAssets7.07.48.57.57.8
Percentage of Assets4.95.26.04.94.6
Percentage of Assets srt:Europe0.00.00.00.00.0

srt:NorthAmerica


Noncurrent
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value90788047771069236594
Percentage of NoncurrentAssets41.939.739.538.840.3
Percentage of Assets29.527.828.025.223.6
Percentage of Assets srt:NorthAmerica0.00.00.00.00.0

Assets Noncurrent

us-gaap:AssetsNoncurrent us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName

us-gaap:AssetsNoncurrent

glw:AffiliatedCompanies


Assets
Period End2020-12-312019-12-31
Value466943
Percentage of AssetsNoncurrent100.0100.0
Percentage of Assets1.53.3
Percentage of Assets glw:AffiliatedCompanies0.00.0

glw:HSG


Assets
Period End2020-12-312019-12-31
Value725420
Percentage of AssetsNoncurrent155.644.5
Percentage of Assets2.41.5
Percentage of Assets glw:HSG0.00.0

Property Plant And Equipment Gross

us-gaap:PropertyPlantAndEquipmentGross

us-gaap:PropertyPlantAndEquipmentGross


Property
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value2940528332268272482622430218362145321299210982144521979214851766617874176371777718277187811823717583178751735516579158001536313498
Percentage of PropertyPlantAndEquipmentGross100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets95.598.097.590.380.476.571.872.670.271.973.772.762.062.262.162.262.263.963.461.764.261.659.659.359.563.4

us-gaap:PropertyPlantAndEquipmentGross us-gaap:PropertyPlantAndEquipmentByType

us-gaap:Building


Property
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-31
Value64536023592458645540550454705472547056075812561941754218418042334324
Percentage of PropertyPlantAndEquipmentGross21.921.322.123.624.725.225.525.725.926.126.426.223.623.623.723.823.7
Percentage of Assets21.020.821.521.319.919.318.318.718.218.819.519.014.714.714.714.814.7
Percentage of Assets us-gaap:Building0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:ConstructionInProgress


Property
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-31
Value19182757221818321482120613161419132212751294168710841139108211131270
Percentage of PropertyPlantAndEquipmentGross6.59.78.37.46.65.56.16.76.35.95.97.96.16.46.16.36.9
Percentage of Assets6.29.58.16.75.34.24.44.84.44.34.35.73.84.03.83.94.3
Percentage of Assets us-gaap:ConstructionInProgress0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:Equipment


Property
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value2056319100182181664814973
Percentage of PropertyPlantAndEquipmentGross69.967.467.967.166.8
Percentage of Assets66.866.166.260.653.7
Percentage of Assets us-gaap:Equipment0.00.00.00.00.0

us-gaap:Land


Property
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-31
Value471452467482435438449452458474494496121115114108112
Percentage of PropertyPlantAndEquipmentGross1.61.61.71.91.92.02.12.12.22.22.22.30.70.60.60.60.6
Percentage of Assets1.51.61.71.81.61.51.51.51.51.61.71.70.40.40.40.40.4
Percentage of Assets us-gaap:Land0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:LeaseholdsAndLeaseholdImprovements


Property
Period End2020-12-312019-12-31
Value184294
Percentage of PropertyPlantAndEquipmentGross0.61.0
Percentage of Assets0.61.0
Percentage of Assets us-gaap:LeaseholdsAndLeaseholdImprovements0.00.0

Accumulated Depreciation Depletion And Amortization Property Plant And Equipment

us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment

us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment


Accumulated
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value136571351413663138741347613187129951273112506121361193211368112591126510809106841051110304988410206997496329188902787848591833284128456814178657897768376067652774574867210720470896824656564205503
Percentage of AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets45.844.844.445.848.947.345.046.645.444.443.443.143.142.039.338.037.836.435.435.432.534.532.231.229.429.327.728.228.327.627.627.527.126.626.026.326.025.325.925.224.524.624.925.8

us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment us-gaap:PropertyPlantAndEquipmentByType

us-gaap:LeaseholdsAndLeaseholdImprovements


Accumulated
Period End2020-12-312019-12-31
Value2752
Percentage of AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment0.20.4
Percentage of Assets0.10.2
Percentage of Assets us-gaap:LeaseholdsAndLeaseholdImprovements0.00.0

Amortization Of Intangible Assets

us-gaap:AmortizationOfIntangibleAssets

us-gaap:AmortizationOfIntangibleAssets


Amortization
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value33323433282628282829262722192218181718171514141216128.09.08.08.08.08.08.07.06.04.04.05.04.04.04.03.02.02.02.02.0
Percentage of AmortizationOfIntangibleAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AmortizationOfIntangibleAssets us-gaap:ConsolidationItems

us-gaap:MaterialReconcilingItems


Amortization
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value33323433282628282829-25.0-27.0-22.019-22.0-18.0-18.0
Percentage of AmortizationOfIntangibleAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0-96.2-100.0-100.0100.0-100.0-100.0-100.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of Assets us-gaap:MaterialReconcilingItems0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AmortizationOfIntangibleAssets us-gaap:Ownership

glw:HSG


Amortization
Period End2020-12-31
Value34
Percentage of AmortizationOfIntangibleAssets100.0
Percentage of Assets0.0
Percentage of Assets glw:HSG0.0

Property Plant And Equipment Net

us-gaap:PropertyPlantAndEquipmentNet

us-gaap:PropertyPlantAndEquipmentNet


Property
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value154551536415742154491469114932153371508315137148781489514345142011441614017133441306012969125461329313048128231264812549126691270812766130331352313344980199779954101711062511036107511037310671102669755923589437995
Percentage of PropertyPlantAndEquipmentNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets51.951.051.251.053.353.653.155.254.954.554.254.454.353.751.047.546.945.845.046.142.645.944.343.442.443.342.543.745.345.234.434.735.135.636.237.537.436.438.336.435.134.634.637.5

us-gaap:PropertyPlantAndEquipmentNet us-gaap:ConsolidationItems

us-gaap:MaterialReconcilingItems


Property
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-31
Value154817641928162816811692
Percentage of PropertyPlantAndEquipmentNet9.811.512.911.613.413.4
Percentage of Assets5.06.17.05.96.05.9
Percentage of Assets us-gaap:MaterialReconcilingItems0.00.00.00.00.00.0

us-gaap:PropertyPlantAndEquipmentNet us-gaap:PropertyPlantAndEquipmentByType

us-gaap:LeaseholdsAndLeaseholdImprovements


Property
Period End2020-12-312019-12-31
Value157242
Percentage of PropertyPlantAndEquipmentNet1.01.6
Percentage of Assets0.50.8
Percentage of Assets us-gaap:LeaseholdsAndLeaseholdImprovements0.00.0

Long Term Investments

us-gaap:LongTermInvestments

us-gaap:LongTermInvestments


Long
Period End2020-12-312018-12-31
Value13716
Percentage of LongTermInvestments100.0100.0
Percentage of Assets0.40.1

us-gaap:LongTermInvestments us-gaap:BalanceSheetLocation

us-gaap:OtherNoncurrentAssets


Long
Period End2020-09-30
Value13
Percentage of LongTermInvestments0.0
Percentage of Assets0.0
Percentage of Assets us-gaap:OtherNoncurrentAssets0.0

us-gaap:LongTermInvestments us-gaap:BalanceSheetLocation, us-gaap:FairValueByFairValueHierarchyLevel

us-gaap:OtherNoncurrentAssets, us-gaap:FairValueInputsLevel1


Long
Period End2020-09-30
Value13
Percentage of LongTermInvestments0.0
Percentage of Assets0.0
Percentage of Assets us-gaap:OtherNoncurrentAssets us-gaap:FairValueInputsLevel10.0

us-gaap:LongTermInvestments us-gaap:FairValueByFairValueHierarchyLevel

us-gaap:FairValueInputsLevel1


Long
Period End2020-12-31
Value137
Percentage of LongTermInvestments100.0
Percentage of Assets0.4
Percentage of Assets us-gaap:FairValueInputsLevel10.0

Investments In Affiliates Subsidiaries Associates And Joint Ventures

us-gaap:InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures

us-gaap:InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures


Investments
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value43535432932033433934434637632233934534035234833733635234620721975182618441764180120022013197655375160480947264915517248704554472648905029456943723992
Percentage of InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets1.41.21.21.11.21.21.21.31.41.21.31.31.21.31.31.21.21.21.17.46.96.36.26.06.06.76.76.719.418.016.916.516.717.616.916.017.017.418.117.116.918.7

us-gaap:InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName

glw:AllOther


Investments
Period End2020-12-312019-12-31
Value435334
Percentage of InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures100.0100.0
Percentage of Assets1.41.2
Percentage of Assets glw:AllOther0.00.0

Goodwill

us-gaap:Goodwill

us-gaap:Goodwill


Goodwill
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-302014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value2433242924602427192519181935192419381930193619301918169816941684160816191577156915691399138013301343134311501142115011251002100110019729746646636656646297100710070007000
Percentage of Goodwill100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets8.28.18.08.07.06.96.77.07.07.17.07.37.36.36.26.05.85.75.75.45.15.04.84.64.54.60.03.83.93.83.53.53.53.43.32.32.32.32.42.225.526.627.132.9

us-gaap:Goodwill us-gaap:BusinessAcquisition

glw:HSG


Goodwillus-gaap:
Period End2020-09-09
Value508
Percentage of Goodwill0.0
Percentage of Assets0.0
Percentage of Assets glw:HSG0.0

glw:HemlockSemiconductorOperationsLlc


Goodwillus-gaap:
Period End2020-09-09
Value495
Percentage of Goodwill0.0
Percentage of Assets0.0
Percentage of Assets glw:HemlockSemiconductorOperationsLlc0.0

us-gaap:Goodwill us-gaap:StatementBusinessSegments

glw:DisplayTechnologies


Goodwillus-gaap:
Period End2020-12-312020-09-302019-12-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-302014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302010-12-312009-12-31
Value132127129132132132136136130130131126133129130128127132133134115103779.09.09.09.09.09.09.09.09.09.09.09.0
Percentage of Goodwill5.45.26.76.86.86.98.08.07.78.18.18.08.58.29.39.39.59.89.911.710.19.06.80.90.90.90.90.91.41.41.41.41.40.10.1
Percentage of Assets0.40.40.40.50.50.50.50.50.50.50.50.50.50.40.50.40.40.40.50.00.40.30.30.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of Assets glw:DisplayTechnologies0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.10.00.00.00.10.00.10.1

glw:LifeSciences


Goodwillus-gaap:
Period End2020-12-312020-09-302019-12-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-302014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302010-12-312009-12-31
Value618617616617619618627623619571560558568566570562567567561580588603604603602601605606296295297296261260232
Percentage of Goodwill25.125.431.831.932.132.236.936.836.835.534.635.436.236.140.740.742.642.241.850.451.552.453.760.260.160.062.262.244.644.544.744.641.53.73.3
Percentage of Assets2.02.02.12.22.32.42.32.32.22.12.02.02.01.82.02.02.01.91.90.02.02.02.02.12.12.12.12.11.01.01.01.10.91.01.1
Percentage of Assets glw:LifeSciences0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0109.80.00.00.081.50.086.1101.3

glw:OpticalCommunications


Goodwillus-gaap:
Period End2020-12-312020-09-302019-12-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-302014-09-302014-06-302014-03-312013-12-312012-12-312011-12-31
Value943932931926917907669671674647644645615622445439441450456238239240240240209209
Percentage of Goodwill38.338.448.147.847.547.339.439.640.040.239.840.939.239.631.831.833.233.534.020.720.920.921.324.021.531.5
Percentage of Assets3.13.13.23.43.53.52.52.42.42.32.32.32.12.01.61.51.51.51.60.00.80.80.80.80.70.8
Percentage of Assets glw:OpticalCommunications0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

glw:SegmentsAllOther


Goodwillus-gaap:
Period End2020-12-312019-12-312018-12-31
Value617109111
Percentage of Goodwill25.15.65.7
Percentage of Assets2.00.40.4
Percentage of Assets glw:SegmentsAllOther0.00.00.0

glw:SpecialtyMaterials


Goodwillus-gaap:
Period End2020-12-312020-09-302019-12-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-302014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302010-12-312009-12-31
Value150150150150150150150150150150150150150150150150195194193198200204204150150150150150150150150150150150150
Percentage of Goodwill6.16.27.87.77.87.88.88.98.99.39.39.59.69.610.710.914.714.414.417.217.517.718.115.015.015.015.415.422.622.622.622.623.82.12.1
Percentage of Assets0.50.50.50.50.60.60.60.50.50.50.50.50.50.50.50.50.70.60.70.00.70.70.70.50.50.50.50.50.50.50.50.50.50.60.7
Percentage of Assets glw:SpecialtyMaterials0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.08.80.00.00.010.30.017.347.0

us-gaap:AllOtherSegments


Goodwillus-gaap:
Period End2020-09-302019-12-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-31
Value60110911111211111611411111013498103102104101
Percentage of Goodwill24.85.65.75.85.86.86.76.66.88.36.26.66.57.47.3
Percentage of Assets2.00.40.40.40.40.40.40.40.40.50.40.40.30.40.4
Percentage of Assets us-gaap:AllOtherSegments0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Intangible Assets Net Excluding Goodwill

us-gaap:IntangibleAssetsNetExcludingGoodwill

us-gaap:IntangibleAssetsNetExcludingGoodwill


Intangible
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312013-12-31
Value1228125913081332107211491185120612401265129213091332851869891842825796797804703706678700702497540
Percentage of IntangibleAssetsNetExcludingGoodwill100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets4.14.24.34.43.94.14.14.44.54.64.75.05.13.23.23.23.02.92.92.82.62.52.52.32.32.41.71.9

Finite Lived Intangible Assets Net

us-gaap:FiniteLivedIntangibleAssetsNet

us-gaap:FiniteLivedIntangibleAssetsNet


Finite
Period End2020-12-312020-09-302019-12-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value130813321185129213091332851869891842825796797804703706678700702497511532540540550558513522248253257262252251255179167
Percentage of FiniteLivedIntangibleAssetsNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets4.34.44.14.75.05.13.23.23.23.02.92.92.82.62.52.52.32.32.41.71.71.81.81.91.92.01.81.80.80.90.90.90.90.91.00.70.8

us-gaap:FiniteLivedIntangibleAssetsNet us-gaap:FiniteLivedIntangibleAssetsByMajorClass

glw:CustomerListsAndOther


Finite
Period End2020-12-312020-09-302019-12-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302012-12-312011-12-312010-12-31
Value1063108194410301042105966267570166264261260660851451848449750134435436937438839540136815395
Percentage of FiniteLivedIntangibleAssetsNet81.381.279.779.779.679.577.877.778.778.677.876.976.075.673.173.471.471.071.469.269.369.469.371.971.871.970.558.453.1
Percentage of Assets3.53.63.33.73.94.12.52.52.52.42.32.22.12.01.81.81.71.71.71.11.21.21.31.41.41.41.30.50.4
Percentage of Assets glw:CustomerListsAndOther0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

glw:PatentsTrademarksAndTradeNames


Finite
Period End2020-12-312020-09-302019-12-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value2452512412622672731891941901801831841911961891881942032011531571631661521551571511541051071081091091001058184
Percentage of FiniteLivedIntangibleAssetsNet18.718.820.320.320.420.522.222.321.321.422.223.124.024.426.926.628.629.028.630.830.730.630.728.128.228.129.429.542.342.342.041.643.339.841.245.350.3
Percentage of Assets0.80.80.81.01.01.00.70.70.70.60.60.70.70.60.70.70.70.70.70.50.50.50.60.50.50.60.50.50.40.40.40.40.40.40.40.30.4
Percentage of Assets glw:PatentsTrademarksAndTradeNames0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Deferred Tax Assets Liabilities Net

us-gaap:DeferredTaxAssetsLiabilitiesNet

us-gaap:DeferredTaxAssetsLiabilitiesNet


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-31
Value80883260436220081716175624982907304031643204
Percentage of DeferredTaxAssetsLiabilitiesNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets2.62.92.21.37.26.05.88.89.910.912.215.0

Operating Lease Right Of Use Asset

us-gaap:OperatingLeaseRightOfUseAsset

us-gaap:OperatingLeaseRightOfUseAsset


Operating
Period End2020-12-312019-12-31
Value680504
Percentage of OperatingLeaseRightOfUseAsset100.0100.0
Percentage of Assets2.21.7

Other Assets Noncurrent

us-gaap:OtherAssetsNoncurrent

us-gaap:OtherAssetsNoncurrent


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value199119962140147414171413148715121552150210211023100795293492889011321271120911871342151315511656168517221170666766473495561437301273274259196157150174153129
Percentage of OtherAssetsNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets6.76.67.04.95.15.15.15.55.65.53.73.93.93.53.43.33.24.04.64.23.94.85.35.45.55.75.73.92.22.61.71.72.01.51.00.91.00.90.70.60.50.70.60.6

us-gaap:OtherAssetsNoncurrent us-gaap:ConsolidationItems

us-gaap:MaterialReconcilingItems


Other
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-31
Value659457645200431059695635
Percentage of OtherAssetsNoncurrent308.1387.6509.3461.5469.6372.4
Percentage of Assets21.419.918.915.721.419.7
Percentage of Assets us-gaap:MaterialReconcilingItems0.00.00.00.00.00.0

Equity Securities Fv Ni

us-gaap:EquitySecuritiesFvNi us-gaap:BalanceSheetLocation, us-gaap:FairValueByFairValueHierarchyLevel

us-gaap:EquitySecuritiesFvNi

us-gaap:OtherCurrentAssets, us-gaap:FairValueInputsLevel1


Equity
Period End2021-06-30
Value16
Percentage of EquitySecuritiesFvNi100.0
Percentage of Assets0.1
Percentage of Assets us-gaap:OtherCurrentAssets us-gaap:FairValueInputsLevel10.0

us-gaap:EquitySecuritiesFvNi us-gaap:FairValueByFairValueHierarchyLevel

us-gaap:FairValueInputsLevel1


Equity
Period End2021-03-31
Value109
Percentage of EquitySecuritiesFvNi0.0
Percentage of Assets0.4
Percentage of Assets us-gaap:FairValueInputsLevel10.0

us-gaap:FairValueInputsLevel3


Equity
Period End2020-12-31
Value107
Percentage of EquitySecuritiesFvNi0.0
Percentage of Assets0.3
Percentage of Assets us-gaap:FairValueInputsLevel30.0

Accounts Payable Current

us-gaap:AccountsPayableCurrent

us-gaap:AccountsPayableCurrent


Accounts
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value13121272117411761109125015871447129712781456109211111164143911791096101510799339388369349099308729977167777327716407217627799019298479779381052949798550
Percentage of AccountsPayableCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets4.44.23.83.94.04.55.55.34.74.75.34.14.34.35.24.23.93.63.93.23.13.03.33.13.13.03.32.42.62.52.72.22.52.72.73.13.23.03.53.33.83.63.12.6

Accrued Income Taxes Current

us-gaap:AccruedIncomeTaxesCurrent

us-gaap:AccruedIncomeTaxesCurrent


Accrued
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-31
Value140153173194116169182183149237169252247192148135129210150149825753106139282288181125
Percentage of AccruedIncomeTaxesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.50.50.60.60.40.60.60.70.50.90.61.00.90.70.50.50.50.70.50.50.30.20.20.40.51.01.00.70.6

Accrued Liabilities Current

us-gaap:AccruedLiabilitiesCurrent

us-gaap:AccruedLiabilitiesCurrent


Accrued
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value29592087243724171899192919231848166417741851176815451451139112551081114914161354123112011308956990917129196795084695491580495911019569349071093104410059191131915
Percentage of AccruedLiabilitiesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets9.96.97.98.06.96.96.76.86.06.56.76.75.95.45.14.53.94.15.14.74.04.34.63.33.33.14.33.23.22.93.33.22.83.43.73.33.23.23.93.73.63.44.44.3

Contract With Customer Liability Current

us-gaap:ContractWithCustomerLiabilityCurrent

us-gaap:ContractWithCustomerLiabilityCurrent


Contract
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-03-312018-12-31
Value2282172111811921921048454
Percentage of ContractWithCustomerLiabilityCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.80.70.70.60.70.70.40.30.2

us-gaap:ContractWithCustomerLiabilityCurrent dei:LegalEntity

glw:HSG


Contract
Period End2020-09-30
Value132
Percentage of ContractWithCustomerLiabilityCurrent72.9
Percentage of Assets0.4
Percentage of Assets glw:HSG0.0

us-gaap:ContractWithCustomerLiabilityCurrent us-gaap:ConsolidatedEntities

glw:HSG


Contract
Period End2021-03-312020-12-31
Value157152
Percentage of ContractWithCustomerLiabilityCurrent72.472.0
Percentage of Assets0.50.5
Percentage of Assets glw:HSG0.00.0

us-gaap:ContractWithCustomerLiabilityCurrent us-gaap:Ownership

glw:HSG


Contract
Period End2020-12-31
Value152
Percentage of ContractWithCustomerLiabilityCurrent72.0
Percentage of Assets0.5
Percentage of Assets glw:HSG0.0

Debt Current

us-gaap:DebtCurrent

us-gaap:DebtCurrent


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312014-12-31
Value3531541562561212113054557.04.02522523803796316312572567.027952757236
Percentage of DebtCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets1.20.50.50.80.00.00.01.11.70.00.01.01.01.41.42.22.30.90.90.00.91.92.00.1

us-gaap:DebtCurrent us-gaap:ConsolidatedEntities

glw:HSG


Debt
Period End2021-03-31
Value50
Percentage of DebtCurrent32.5
Percentage of Assets0.2
Percentage of Assets glw:HSG0.0

Liabilities Current

us-gaap:LiabilitiesCurrent

us-gaap:LiabilitiesCurrent


Liabilities
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value46243513376738493020319135213600341630593311311229082995320930652808242127512294244825642814196620221895232421382177204617461578159717951956198718921781209720092083189419861539
Percentage of LiabilitiesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets15.511.712.212.711.011.512.213.212.411.212.011.811.111.211.710.910.18.69.98.08.09.29.96.86.86.57.77.27.36.96.15.55.66.36.76.86.66.37.57.17.57.17.77.2

Operating Lease Liability Current

us-gaap:OperatingLeaseLiabilityCurrent

us-gaap:OperatingLeaseLiabilityCurrent


Operating
Period End2021-06-302021-03-312020-12-312019-12-31
Value94899662
Percentage of OperatingLeaseLiabilityCurrent100.0100.0100.0100.0
Percentage of Assets0.30.30.30.2

Other Accrued Liabilities Current

us-gaap:OtherAccruedLiabilitiesCurrent

us-gaap:OtherAccruedLiabilitiesCurrent


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-31
Value11789079731056889829853905885977871785653584540510460450621456476453526623370359432465317
Percentage of OtherAccruedLiabilitiesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets4.03.03.23.53.23.03.03.33.23.63.23.02.52.22.01.81.71.62.21.61.61.61.82.11.31.21.61.81.5

Long Term Debt

us-gaap:LongTermDebt us-gaap:DebtInstrument

us-gaap:LongTermDebt

glw:Debentures29Due2022


Long
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-31
Value374374373373372374
Percentage of LongTermDebt100.0100.0100.0100.0100.0100.0
Percentage of Assets1.21.31.41.41.31.3
Percentage of Assets glw:Debentures29Due20220.00.00.00.00.00.0

glw:Debentures3.9Due2049


Long
Period End2020-12-312019-12-31
Value394395
Percentage of LongTermDebt105.3105.6
Percentage of Assets1.31.4
Percentage of Assets glw:Debentures3.9Due20490.00.0

glw:Debentures370Due2023


Long
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-31
Value249249249249248249249249
Percentage of LongTermDebt66.666.666.866.866.766.60.00.0
Percentage of Assets0.80.90.90.90.90.90.80.9
Percentage of Assets glw:Debentures370Due20230.00.00.00.00.00.00.00.0

glw:Debentures4.375Due2057


Long
Period End2020-12-312019-12-312018-12-312017-12-31
Value743742742743
Percentage of LongTermDebt198.7198.4198.9199.2
Percentage of Assets2.42.62.72.7
Percentage of Assets glw:Debentures4.375Due20570.00.00.00.0

glw:Debentures470Due2037


Long
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-31
Value296295295248248250250250250
Percentage of LongTermDebt79.178.979.166.566.766.80.00.00.0
Percentage of Assets1.01.01.10.90.90.90.80.90.9
Percentage of Assets glw:Debentures470Due20370.00.00.00.00.00.00.00.00.0

glw:Debentures475Due2042


Long
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-31
Value496496496496495499499499500
Percentage of LongTermDebt132.6132.6133.0133.0133.1133.40.00.00.0
Percentage of Assets1.61.71.81.81.81.71.71.81.7
Percentage of Assets glw:Debentures475Due20420.00.00.00.00.00.00.00.00.0

glw:Debentures5.45Due2079


Long
Period End2020-12-312019-12-31
Value10841085
Percentage of LongTermDebt289.8290.1
Percentage of Assets3.53.8
Percentage of Assets glw:Debentures5.45Due20790.00.0

glw:Debentures575Due2040


Long
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-31
Value396395395397395398398398398
Percentage of LongTermDebt105.9105.6105.9106.4106.2106.40.00.00.0
Percentage of Assets1.31.41.41.41.41.41.31.41.4
Percentage of Assets glw:Debentures575Due20400.00.00.00.00.00.00.00.00.0

glw:Debentures685Due2029


Long
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-31
Value161163164166167169170172173
Percentage of LongTermDebt43.043.644.044.544.945.20.00.00.0
Percentage of Assets0.50.60.60.60.60.60.60.60.6
Percentage of Assets glw:Debentures685Due20290.00.00.00.00.00.00.00.00.0

glw:Debentures8875Due2021


Long
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-31
Value636465666768697071
Percentage of LongTermDebt16.817.117.417.718.018.20.00.00.0
Percentage of Assets0.20.20.20.20.20.20.20.20.2
Percentage of Assets glw:Debentures8875Due20210.00.00.00.00.00.00.00.00.0

glw:DebenturesB


Long
Period End2020-12-31
Value99
Percentage of LongTermDebt26.5
Percentage of Assets0.3
Percentage of Assets glw:DebenturesB0.0

glw:DebenturesCallable725Due2036


Long
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-31
Value249249248248248249249249249
Percentage of LongTermDebt66.666.666.566.566.766.60.00.00.0
Percentage of Assets0.80.90.90.90.90.90.80.90.8
Percentage of Assets glw:DebenturesCallable725Due20360.00.00.00.00.00.00.00.00.0

glw:OtherAverageRate4.27DueThrough2043


Long
Period End2020-12-312019-12-312018-12-31
Value598321396
Percentage of LongTermDebt159.985.8106.2
Percentage of Assets1.91.11.4
Percentage of Assets glw:OtherAverageRate4.27DueThrough20430.00.00.0

glw:YenDenominatedDebentures.698Due2024


Long
Period End2020-12-312019-12-312018-12-312017-12-31
Value203192191185
Percentage of LongTermDebt54.351.351.249.6
Percentage of Assets0.70.70.70.7
Percentage of Assets glw:YenDenominatedDebentures.698Due20240.00.00.00.0

glw:YenDenominatedDebentures.722Due2025


Long
Period End2020-12-312019-12-312018-12-31
Value969190
Percentage of LongTermDebt25.724.324.1
Percentage of Assets0.30.30.3
Percentage of Assets glw:YenDenominatedDebentures.722Due20250.00.00.0

glw:YenDenominatedDebentures.992Due2027


Long
Period End2020-12-312019-12-312018-12-312017-12-31
Value453430426414
Percentage of LongTermDebt121.1115.0114.2111.0
Percentage of Assets1.51.51.51.5
Percentage of Assets glw:YenDenominatedDebentures.992Due20270.00.00.00.0

glw:YenDenominatedDebentures1.043Due2028


Long
Period End2020-12-312019-12-312018-12-31
Value293278276
Percentage of LongTermDebt78.374.374.0
Percentage of Assets1.01.01.0
Percentage of Assets glw:YenDenominatedDebentures1.043Due20280.00.00.0

glw:YenDenominatedDebentures1.153Due2031


Long
Period End2020-12-312019-12-31
Value301285
Percentage of LongTermDebt80.576.2
Percentage of Assets1.01.0
Percentage of Assets glw:YenDenominatedDebentures1.153Due20310.00.0

glw:YenDenominatedDebentures1.219Due2030


Long
Period End2020-12-312019-12-312018-12-31
Value239227226
Percentage of LongTermDebt63.960.760.6
Percentage of Assets0.80.80.8
Percentage of Assets glw:YenDenominatedDebentures1.219Due20300.00.00.0

glw:YenDenominatedDebentures1.513Due2039


Long
Period End2020-12-312019-12-31
Value5654
Percentage of LongTermDebt15.014.4
Percentage of Assets0.20.2
Percentage of Assets glw:YenDenominatedDebentures1.513Due20390.00.0

glw:YenDenominatedDebentures1.583Due2037


Long
Period End2020-12-312019-12-312018-12-312017-12-31
Value96919185
Percentage of LongTermDebt25.724.324.422.8
Percentage of Assets0.30.30.30.3
Percentage of Assets glw:YenDenominatedDebentures1.583Due20370.00.00.00.0

Long Term Debt And Capital Lease Obligations

us-gaap:LongTermDebtAndCapitalLeaseObligations

us-gaap:LongTermDebtAndCapitalLeaseObligations


Long
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value70257650781678227797781577296225608060185994505650994808474939943302366936463916391839103910391539103165322732283238322432722816282228553382327232293135236422822248224522621930
Percentage of LongTermDebtAndCapitalLeaseObligations100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets23.625.425.425.828.328.126.722.822.022.021.819.219.517.917.314.211.913.013.113.612.814.013.713.513.110.810.710.810.910.911.59.89.910.011.511.111.211.08.58.18.18.48.89.1

Deferred Income Tax Liabilities Net

us-gaap:DeferredIncomeTaxLiabilitiesNet

us-gaap:DeferredIncomeTaxLiabilitiesNet


Deferred
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312018-12-31
Value277287313247273251325347
Percentage of DeferredIncomeTaxLiabilitiesNet100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.91.01.00.81.00.91.11.3

Pension And Other Postretirement Defined Benefit Plans Liabilities Noncurrent

us-gaap:PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType

us-gaap:PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent

country:US, us-gaap:PensionPlansDefinedBenefit


Pension
Period End2020-12-312019-12-312018-12-312017-12-31
Value615690603506
Percentage of PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent100.0100.0100.0100.0
Percentage of Assets2.02.42.21.8
Percentage of Assets country:US us-gaap:PensionPlansDefinedBenefit0.00.00.00.0

us-gaap:ForeignPlan, us-gaap:PensionPlansDefinedBenefit


Pension
Period End2020-12-312019-12-312018-12-312017-12-31
Value272282213199
Percentage of PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent44.240.935.339.3
Percentage of Assets0.91.00.80.7
Percentage of Assets us-gaap:ForeignPlan us-gaap:PensionPlansDefinedBenefit0.00.00.00.0

us-gaap:PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent us-gaap:RetirementPlanType

glw:OtherPostretirementBenefitsPlan


Pension
Period End2020-12-312019-12-312018-12-312017-12-31
Value727671662749
Percentage of PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent118.297.2109.8148.0
Percentage of Assets2.42.32.42.7
Percentage of Assets glw:OtherPostretirementBenefitsPlan0.00.00.00.0

us-gaap:PensionPlansDefinedBenefit


Pension
Period End2020-12-312019-12-312018-12-312017-12-31
Value887972816705
Percentage of PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent144.2140.9135.3139.3
Percentage of Assets2.93.43.02.6
Percentage of Assets us-gaap:PensionPlansDefinedBenefit0.00.00.00.0

Minority Interest

us-gaap:MinorityInterest

us-gaap:MinorityInterest


Minority
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value182189191197848990100969994887475726668716766636975737274737169694949764647474850515151515152
Percentage of MinorityInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.60.60.60.70.30.30.30.40.30.40.30.30.30.30.30.20.20.30.20.20.20.20.30.30.20.30.20.20.20.20.20.20.30.20.20.20.20.20.20.20.20.20.20.2

us-gaap:MinorityInterest us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName

glw:HSG


Minority
Period End2020-12-312019-12-31
Value9.042
Percentage of MinorityInterest4.746.7
Percentage of Assets0.00.1
Percentage of Assets glw:HSG0.00.0

Other Liabilities Noncurrent

us-gaap:OtherLiabilitiesNoncurrent

us-gaap:OtherLiabilitiesNoncurrent


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value52924689501750723928389539803724391038793652354534803797301729402928310128054104390527672242216521202081204618421834178914831605160016221574136413311306136113001302125112461373
Percentage of OtherLiabilitiesNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets17.815.616.316.814.314.013.813.614.214.213.313.413.314.111.010.510.511.010.114.212.79.97.97.57.17.16.86.26.16.15.25.65.65.75.44.64.64.64.94.64.74.74.86.4

Operating Lease Liability Noncurrent

us-gaap:OperatingLeaseLiabilityNoncurrent

us-gaap:OperatingLeaseLiabilityNoncurrent


Operating
Period End2021-06-302021-03-312020-12-312019-12-31
Value618611633450
Percentage of OperatingLeaseLiabilityNoncurrent100.0100.0100.0100.0
Percentage of Assets2.12.02.11.6

Lessee Operating Lease Liability Payments Due Year Two

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearTwo

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearTwo


Lessee
Period End2020-12-31
Value125
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearTwo100.0
Percentage of Assets0.4

Lessee Operating Lease Liability Payments Due Year Three

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearThree

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearThree


Lessee
Period End2020-12-31
Value114
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearThree100.0
Percentage of Assets0.4

Lessee Operating Lease Liability Payments Due Year Four

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFour

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFour


Lessee
Period End2020-12-31
Value102
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearFour100.0
Percentage of Assets0.3

Lessee Operating Lease Liability Payments Due Year Five

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFive

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFive


Lessee
Period End2020-12-31
Value92
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearFive100.0
Percentage of Assets0.3

Lessee Operating Lease Liability Payments Due After Year Five

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive


Lessee
Period End2020-12-31
Value733
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive100.0
Percentage of Assets2.4

Operating Lease Liability

us-gaap:OperatingLeaseLiability

us-gaap:OperatingLeaseLiability


Operating
Period End2020-12-312019-12-312019-09-302019-06-30
Value729512508513
Percentage of OperatingLeaseLiability100.0100.0100.0100.0
Percentage of Assets2.41.81.91.9

Lessee Operating Lease Liability Payments Due

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDue

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDue


Lessee
Period End2020-12-31
Value1307
Percentage of LesseeOperatingLeaseLiabilityPaymentsDue100.0
Percentage of Assets4.2

Lessee Operating Lease Liability Undiscounted Excess Amount

us-gaap:LesseeOperatingLeaseLiabilityUndiscountedExcessAmount

us-gaap:LesseeOperatingLeaseLiabilityUndiscountedExcessAmount


Lessee
Period End2020-12-31
Value578
Percentage of LesseeOperatingLeaseLiabilityUndiscountedExcessAmount100.0
Percentage of Assets1.9

Stockholders Equity

us-gaap:StockholdersEquity

us-gaap:StockholdersEquity


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value1196013369132571266012049121981290713034134251360713792138901387714413156981731718012183081789317721196091791818788199972098321298215792177921763216502116221749213782134421486218392135421317210782164021255203041937515543
Percentage of StockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets40.144.443.141.843.743.844.747.748.749.850.152.653.153.757.161.664.764.764.161.564.064.165.869.270.272.671.873.073.073.374.375.775.374.673.174.374.374.875.776.876.476.275.073.0

Stockholders Equity Including Portion Attributable To Noncontrolling Interest

us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest

us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-312008-12-312007-12-31
Value1214213558134481285712133122871299713134135211370613886139781395114488157701738318080183791796017787196721798718863200702105521372216522185021832217192121121798214542139021533218862140221367211292169121306203551942615595134919542
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets40.745.043.742.544.044.145.048.149.050.250.553.053.454.057.461.965.064.964.461.764.264.466.169.570.472.972.073.373.273.574.575.975.674.873.374.474.475.075.977.076.676.475.273.270.10.0

us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest us-gaap:StatementEquityComponents

us-gaap:AccumulatedDefinedBenefitPlansAdjustment


Stockholders
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312012-12-312011-12-312010-12-312009-12-312008-12-312007-12-31
Value-450.0-362.0-298.0-317.0-347.0-588.0-709.0-1476.0-1384.0-1275.0-1171.0-1155.0-600.0
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest-3.3-2.8-2.1-2.0-1.9-3.1-3.3-6.9-6.6-6.6-7.5-8.6-6.3
Percentage of Assets-1.5-1.3-1.1-1.2-1.2-2.1-2.4-5.0-5.0-4.9-5.5-6.00.0
Percentage of Assets us-gaap:AccumulatedDefinedBenefitPlansAdjustment0.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AccumulatedNetGainLossFromDesignatedOrQualifyingCashFlowHedges


Stockholders
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-312016-12-312015-12-312014-12-312010-12-312009-12-312008-12-312007-12-31
Value42209.0-10.051-14.08.010.06.07.0-37.0-38.0-2.0-23.01.0-38.0-22.0
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest0.30.20.1-0.10.4-0.10.10.10.00.0-0.2-0.2-0.0-0.10.0-0.3-0.2
Percentage of Assets0.10.10.0-0.00.2-0.10.00.00.00.0-0.1-0.1-0.0-0.10.0-0.20.0
Percentage of Assets us-gaap:AccumulatedNetGainLossFromDesignatedOrQualifyingCashFlowHedges0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AccumulatedNetUnrealizedInvestmentGainLoss


Stockholders
Period End2020-12-312019-12-312019-03-312018-12-312018-03-312017-12-312016-12-312015-12-312014-12-312012-12-312011-12-312010-12-312009-12-312008-12-312007-12-31
Value-3.0-3.0-350.0-4.0-316.0-3.0-17.0-14.0-15.0-16.0-29.0-33.0-39.0-92.0-11.0
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest-0.0-0.0-2.6-0.0-2.2-0.0-0.1-0.1-0.1-0.1-0.1-0.2-0.3-0.7-0.1
Percentage of Assets-0.0-0.0-1.3-0.0-1.2-0.0-0.1-0.0-0.0-0.1-0.1-0.1-0.2-0.50.0
Percentage of Assets us-gaap:AccumulatedNetUnrealizedInvestmentGainLoss0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AccumulatedOtherComprehensiveIncome


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-312008-12-312007-12-31
Value-1052.0-1092.0-740.0-1134.0-1432.0-1497.0-1171.0-1387.0-1130.0-1166.0-1010.0-1136.0-1035.0-577.0-842.0-1676.0-1811.0-1307.044-300.0-89.043-401.0-643.0-90.0
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest-8.7-8.1-5.5-8.8-11.8-12.2-9.0-10.6-8.4-8.5-7.3-8.1-7.4-4.0-5.3-9.3-9.6-6.00.2-1.4-0.40.2-2.6-4.8-0.9
Percentage of Assets-3.5-3.6-2.4-3.7-5.2-5.4-4.1-5.1-4.1-4.3-3.7-4.3-4.0-2.2-3.1-6.0-6.3-4.30.2-1.0-0.30.2-1.9-3.30.0
Percentage of Assets us-gaap:AccumulatedOtherComprehensiveIncome0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AccumulatedTranslationAdjustment


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312015-12-312014-12-312010-12-312009-12-312008-12-312007-12-31
Value-652.0-692.0-329.0-781.0-1064.0-1122.0-857.0-1024.0-786.0-824.0-714.0-821.0-693.0-265.0-529.0-818.0-871.0-825.0-1275.0-1171.0-581.01374808642543
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest-5.4-5.1-2.4-6.1-8.8-9.1-6.6-7.8-5.8-6.0-5.1-5.9-5.0-1.8-3.4-4.7-4.8-4.5-7.1-6.2-2.77.15.24.85.7
Percentage of Assets-2.2-2.3-1.1-2.6-3.9-4.0-3.0-3.7-2.9-3.0-2.6-3.1-2.7-1.0-1.9-2.9-3.1-2.9-4.6-4.1-1.95.33.83.30.0
Percentage of Assets us-gaap:AccumulatedTranslationAdjustment0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AdditionalPaidInCapital


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-312008-12-312007-12-31
Value16352147221464214494143981434014323142951427714243142121420114158141191408913695133521345613066131461304112865127071250212281
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest134.7108.6108.9112.7118.7116.7110.2108.8105.6103.9102.3101.6101.597.589.376.370.862.161.661.161.766.281.592.7128.7
Percentage of Assets54.948.847.647.952.351.549.652.351.852.151.753.854.252.651.249.146.844.845.944.846.849.859.764.90.0
Percentage of Assets us-gaap:AdditionalPaidInCapital0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AociIncludingPortionAttributableToNoncontrollingInterest


Stockholders
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-31
Value-740.0-1171.0-1010.0-842.0-1676.0-1811.0-1307.0
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest-5.5-9.0-7.3-5.3-9.3-9.6-6.0
Percentage of Assets-2.4-4.1-3.7-3.1-6.0-6.3-4.3
Percentage of Assets us-gaap:AociIncludingPortionAttributableToNoncontrollingInterest0.00.00.00.00.00.00.0

us-gaap:CommonStock


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-312008-12-312007-12-31
Value907864863861860859859859858857857856855854854846840836831825818813808804799
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest7.56.46.46.77.17.06.66.56.36.36.26.16.15.95.44.74.53.93.93.83.94.25.26.08.4
Percentage of Assets3.02.92.82.83.13.13.03.13.13.13.13.23.33.23.13.02.92.82.92.82.93.13.84.20.0
Percentage of Assets us-gaap:CommonStock0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:NoncontrollingInterest


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-312008-12-312007-12-31
Value1821891911978489901009699948874757267757349475151524846
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest1.51.41.41.50.70.70.70.80.70.70.70.60.50.50.50.40.40.30.20.20.20.30.30.40.5
Percentage of Assets0.60.60.60.70.30.30.30.40.30.40.30.30.30.30.30.20.30.20.20.20.20.20.20.20.0
Percentage of Assets us-gaap:NoncontrollingInterest0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:Parent


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-312008-12-312007-12-31
Value1196013369132571266012049121981290713034134251360713792138901387714413156981789318788215792116221486210781937515543134439496
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest98.598.698.698.599.399.399.399.299.399.399.399.499.599.599.599.699.699.799.899.899.899.799.799.699.5
Percentage of Assets40.144.443.141.843.743.844.747.748.749.850.152.653.153.757.164.165.871.874.373.175.775.073.069.80.0
Percentage of Assets us-gaap:Parent0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:RetainedEarnings


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-312008-12-31
Value15739165091612016065158471611416408165551639916489163031618615731151661593016880138321302111320105889332688136361940
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest129.6121.8119.9125.0130.6131.1126.2126.0121.3120.3117.4115.8112.8104.7101.094.073.360.153.449.244.235.423.314.4
Percentage of Assets52.854.852.453.157.557.856.860.659.560.459.361.360.256.557.960.548.543.339.736.033.526.617.110.1
Percentage of Assets us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:TreasuryStock


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-312008-12-312007-12-31
Value-19986.0-19934.0-19928.0-19926.0-19924.0-19918.0-19812.0-19588.0-19279.0-19116.0-18870.0-18517.0-18132.0-17449.0-16633.0-14152.0-9725.0-6727.0-4099.0-2773.0-2024.0-1227.0-1207.0-1160.0-492.0
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest-164.6-147.0-148.2-155.0-164.2-162.1-152.4-149.1-142.6-139.5-135.9-132.5-130.0-120.4-105.5-78.8-51.6-31.1-19.3-12.9-9.6-6.3-7.7-8.6-5.2
Percentage of Assets-67.1-66.1-64.8-65.8-72.3-71.5-68.6-71.7-69.9-70.0-68.6-70.2-69.4-65.0-60.5-50.7-34.1-22.4-14.4-9.4-7.3-4.7-5.7-6.00.0
Percentage of Assets us-gaap:TreasuryStock0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Common Stock Value

us-gaap:CommonStockValue

us-gaap:CommonStockValue


Common
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value907864863861860859859859858857857856855854854853852850846844842841840840840840836836835833831829828826825824823822818818817817813808
Percentage of CommonStockValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets3.02.92.82.83.13.13.03.13.13.13.13.23.33.23.13.03.13.03.02.92.73.02.92.92.82.92.82.82.82.82.92.92.92.92.82.82.92.92.92.92.93.13.13.8

us-gaap:CommonStockValue us-gaap:StatementEquityComponents

us-gaap:CommonStock


Common
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value863859857854846840836831825818813
Percentage of CommonStockValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets2.83.03.13.13.02.92.82.92.82.93.1
Percentage of Assets us-gaap:CommonStock0.00.00.00.00.00.00.00.00.00.00.0

Additional Paid In Capital Common Stock

us-gaap:AdditionalPaidInCapitalCommonStock

us-gaap:AdditionalPaidInCapitalCommonStock


Additional
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value1635214722146421449414398143401432314295142771424314212142011415814119140891401313962138881369513340136681363813352135901357813552134561333613305130721306613215132061316713146131181309613077130411301412989129541286512707
Percentage of AdditionalPaidInCapitalCommonStock100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets54.948.847.647.952.351.549.652.351.852.151.753.854.252.651.249.950.249.149.146.344.648.846.847.045.446.244.844.744.644.245.946.046.546.044.844.645.545.946.846.246.748.649.859.7

Retained Earnings Accumulated Deficit

us-gaap:RetainedEarningsAccumulatedDeficit

us-gaap:RetainedEarningsAccumulatedDeficit


Retained
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value157391650916120160651584716114164081655516399164891630316186157311516615930175331730317030168801546015331132901383213769137271340513021123391147811465113201101710754102621058810438100299679933289588227755068813636
Percentage of RetainedEarningsAccumulatedDeficit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets52.854.852.453.157.557.856.860.659.560.459.361.360.256.557.962.462.260.260.553.750.047.648.547.645.945.743.341.438.538.839.738.437.935.936.035.534.934.033.531.829.628.326.617.1

Accumulated Other Comprehensive Income Loss Net Of Tax

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax


Accumulated
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value-1052.0-1092.0-740.0-1134.0-1432.0-1497.0-1171.0-1387.0-1130.0-1166.0-1010.0-1136.0-1035.0-577.0-842.0-1146.0-1201.0-1196.0-1676.0-715.0-966.0-1404.0-1811.0-1803.0-1591.0-1556.0-1307.0-489.0185-70.044-75.0-388.0-132.0-300.0105-136.0-140.0-89.09346422343-401.0
Percentage of AccumulatedOtherComprehensiveIncomeLossNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets-3.5-3.6-2.4-3.7-5.2-5.4-4.1-5.1-4.1-4.3-3.7-4.3-4.0-2.2-3.1-4.1-4.3-4.2-6.0-2.5-3.2-5.0-6.3-6.2-5.3-5.3-4.3-1.60.6-0.20.2-0.3-1.4-0.5-1.00.4-0.5-0.5-0.30.31.70.80.2-1.9

Treasury Stock Value

us-gaap:TreasuryStockValue

us-gaap:TreasuryStockValue


Treasury
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value199861993419928199261992419918198121958819279191161887018517181321744916633162361520414564141521350811566107479725869978717243672765436340595040993237302227792773264624582121202412431242124012271207
Percentage of TreasuryStockValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets67.166.164.865.872.371.568.671.769.970.068.670.269.465.060.557.854.651.550.746.937.738.534.130.126.324.722.421.921.320.114.411.310.69.79.49.08.57.47.34.44.54.74.75.7

us-gaap:TreasuryStockValue us-gaap:StatementEquityComponents

us-gaap:TreasuryStock


Treasury
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value1992819812188701663314152972567274099277320241227
Percentage of TreasuryStockValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets64.868.668.660.550.734.122.414.49.47.34.7
Percentage of Assets us-gaap:TreasuryStock0.00.00.00.00.00.00.00.00.00.00.0

Minority Interest

us-gaap:MinorityInterest

us-gaap:MinorityInterest


Minority
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value182189191197848990100969994887475726668716766636975737274737169694949764647474850515151515152
Percentage of MinorityInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.60.60.60.70.30.30.30.40.30.40.30.30.30.30.30.20.20.30.20.20.20.20.30.30.20.30.20.20.20.20.20.20.30.20.20.20.20.20.20.20.20.20.20.2

us-gaap:MinorityInterest us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName

glw:HSG


Minority
Period End2020-12-312019-12-31
Value9.042
Percentage of MinorityInterest4.746.7
Percentage of Assets0.00.1
Percentage of Assets glw:HSG0.00.0

Net Cash Provided By Used In Operating Activities

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetCashProvidedByUsedInOperatingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value7717237746085502481018889153-29.0941943715320888645280191
Percentage of NetCashProvidedByUsedInOperatingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax22.022.023.120.321.510.436.130.35.2-1.031.031.326.012.833.724.711.28.0

Net Cash Provided By Used In Investing Activities

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:NetCashProvidedByUsedInInvestingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value-127.0-288.0-378.0-148.0-245.0-539.0-357.0-500.0-551.0-483.0-621.0-511.0-1111.0-644.0-492.0-584.0-308.0-326.0-294.0-282.04314-76.0137-199.090-713.0-209.0-170.0-282.0-301.0-429.0-225.0-228.0-122.0-1007.0-482.0-535.0-604.0-476.0-418.0-505.0-657.0-560.0-902.0-384.077
Percentage of NetCashProvidedByUsedInInvestingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-3.6-8.8-11.3-4.9-9.6-22.5-12.7-17.0-18.7-17.2-20.5-17.0-40.4-25.8-18.7-22.4-12.3-13.7-11.9-11.2182.8-3.76.1-8.83.8-31.5-8.7-6.7-11.4-13.1-21.9-10.9-11.5-6.7-46.9-23.7-28.0-31.5-25.2-20.1-25.2-34.2-31.7-56.3-22.45.0

Net Cash Provided By Used In Financing Activities

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:NetCashProvidedByUsedInFinancingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value-1199.0-190.0-314.0-143.0-178.0-94.0786-571.0131-393.0121-538.0-619.0-959.0-29.0-457.0-750.0-388.0-448.0-2735.0-1210.0-913.0-1014.0-980.0-35.0-574.0-740.0-357.0-312.0-1177.0-716.0-363.0-355.0-629.0-209.0-166.0-332.0592-805.0-46.0-72.0-57.0-175.0346-62.0-111.0
Percentage of NetCashProvidedByUsedInFinancingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-34.2-5.8-9.4-4.8-7.0-3.927.9-19.54.5-14.04.0-17.9-22.5-38.4-1.1-17.5-30.0-16.3-18.1-109.1-51.3-44.6-45.5-43.1-1.5-25.3-30.8-14.1-12.6-51.4-36.6-17.6-17.9-34.7-9.7-8.1-17.430.8-42.7-2.2-3.6-3.0-9.921.6-3.6-7.1

Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect


Cash
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value-548.0196158356133-409.01463-207.0-278.0-899.0452-120.0-1073.0-1221.0
Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-15.76.04.711.95.2-17.151.9-7.1-9.5-32.014.9-4.0-39.1-48.8

Deferred Income Tax Expense Benefit

us-gaap:DeferredIncomeTaxExpenseBenefit

us-gaap:DeferredIncomeTaxExpenseBenefit


Deferred
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value-65.01217634-90.0-40.0-106.0-51.06.0-40.0-91.07.0301618581445-121.0739-149.0-553.0-345.0-133.015636-5.019831181224822149-30.02423-26.047-3.022811583-25.0-40.050
Percentage of DeferredIncomeTaxExpenseBenefit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Increase Decrease In Accounts Receivable

us-gaap:IncreaseDecreaseInAccountsReceivable

us-gaap:IncreaseDecreaseInAccountsReceivable


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value158-109.0-7.030816-43.0-217.0-32.016536-43.0156135-94.035924454-78.081124-21.0-110.0-77.060-35.0-47.05232-21.0-110.08373-17.0123811949-98.0-61.0122121-224.0-131.073120
Percentage of IncreaseDecreaseInAccountsReceivable100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Increase Decrease In Inventories

us-gaap:IncreaseDecreaseInInventories

us-gaap:IncreaseDecreaseInInventories


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value26-44.0-183.0-187.0-120.067-40.081981591114295984.0566149-1.03.02442176.0531.025-14.0-16.03.09.02773138-8.0-4.047-12.031276479-307.0853131
Percentage of IncreaseDecreaseInInventories100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Increase Decrease In Other Operating Capital Net

us-gaap:IncreaseDecreaseInOtherOperatingCapitalNet

us-gaap:IncreaseDecreaseInOtherOperatingCapitalNet


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value-2.012766-109.0-80.0-4.07.0-74.02933-180.011140-32.0-106.0-3.0-120.06.0-115.0-26.0-23.043-225.061-29.013170-343.0-38.042424112-141.0188-62.0-166.01103467-55.0-144.062-134.010963
Percentage of IncreaseDecreaseInOtherOperatingCapitalNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Net Cash Provided By Used In Operating Activities

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetCashProvidedByUsedInOperatingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value7717237746085502481018889153-29.0941943715320888645280191
Percentage of NetCashProvidedByUsedInOperatingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax22.022.023.120.321.510.436.130.35.2-1.031.031.326.012.833.724.711.28.0

Net Income Loss

us-gaap:NetIncomeLoss

us-gaap:NetIncomeLoss


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value449599252427-71.0-96.03233792499292625738-589.0-1412.03904398615722842207-368.022421249640798810141693014214086384941555214624624918117557481044785913816
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax12.818.27.514.2-2.8-4.01.111.53.117.79.620.826.9-23.6-53.515.017.63.663.511.393.5-18.010.09.321.218.041.139.96.813.121.519.732.227.27.225.624.224.126.039.137.738.959.249.053.352.5

us-gaap:NetIncomeLoss us-gaap:ConsolidationItems

us-gaap:MaterialReconcilingItems


Net
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value252427-71.0-96.03233792499292625738-589.0
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax7.514.2-2.8-4.01.111.53.117.79.620.826.9-23.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:MaterialReconcilingItems0.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:OperatingSegments


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-30
Value595513600504288236359454475413506520413345280373356374371403318213282389443405567533388
Percentage of NetIncomeLoss132.585.6238.1118.0-405.6-245.81121.9134.7516.382.8173.383.256.0-58.6-19.895.681.1434.923.6141.914.4-57.9125.9183.589.399.557.452.6229.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax17.015.617.916.811.29.912.715.516.214.716.717.315.013.810.614.314.315.715.016.113.510.412.617.118.917.923.621.015.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments0.00.00.00.00.00.00.00.00.00.00.017.115.013.70.014.214.115.40.00.00.00.00.00.00.00.00.00.00.0

us-gaap:NetIncomeLoss us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, glw:DisplayProducts


Net
Period End2021-06-302021-03-312020-06-302020-03-31
Value248213152152
Percentage of NetIncomeLoss55.235.6-214.1-158.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax7.16.55.96.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments glw:DisplayProducts0.00.00.00.0

us-gaap:OperatingSegments, glw:DisplayTechnologies


Net
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-30
Value217196152152180185213208240218192185168203211249243279204209243255303294518387282
Percentage of NetIncomeLoss86.145.9-214.1-158.3562.554.9231.541.782.234.926.0-31.4-11.952.148.1289.515.598.29.2-56.8108.5120.361.172.252.438.2166.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax6.56.55.96.46.46.37.27.47.97.27.07.46.47.88.510.59.811.18.610.210.911.212.913.021.515.211.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments glw:DisplayTechnologies0.00.00.00.00.00.00.00.00.025.624.624.80.025.527.231.80.00.00.00.00.00.00.00.00.00.00.0

us-gaap:OperatingSegments, glw:EnvironmentalTechnologies


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-30
Value817493690.0356479655542605452303432312735373429384648315747
Percentage of NetIncomeLoss18.012.436.916.2-0.0-36.5200.023.470.711.014.49.67.3-8.8-2.18.77.336.01.712.31.7-9.212.917.99.311.83.15.627.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax2.32.22.82.30.01.52.32.72.22.01.42.02.02.11.11.31.31.31.11.41.61.71.31.72.02.11.32.21.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments glw:EnvironmentalTechnologies0.00.00.00.00.00.00.00.00.00.00.018.117.016.110.312.312.211.311.013.314.312.911.414.817.717.012.420.216.5

us-gaap:OperatingSegments, glw:LifeScienceProducts


Net
Period End2021-06-302021-03-312020-06-302020-03-31
Value52483138
Percentage of NetIncomeLoss11.68.0-43.7-39.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.51.51.21.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments glw:LifeScienceProducts0.00.00.00.0

us-gaap:OperatingSegments, glw:LifeSciences


Net
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-30
Value42283138384140312930312716171417131617129.0181816131918
Percentage of NetIncomeLoss16.76.6-43.7-39.6118.812.243.56.29.94.84.2-4.6-1.14.43.219.80.85.60.8-3.34.08.53.63.91.31.910.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.30.91.21.61.31.41.41.11.01.01.11.10.60.70.60.70.50.60.70.60.40.80.80.70.50.70.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments glw:LifeSciences0.00.00.00.00.00.00.00.00.013.012.711.67.17.66.38.16.37.57.95.94.58.58.58.16.08.98.1

us-gaap:OperatingSegments, glw:NonReportableSegments


Net
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value-29.0-50.0-66.0-69.0-79.0-70.0-68.0-72.0-57.0-72.0-78.0-74.0-43.0-64.0-62.0-60.0
Percentage of NetIncomeLoss-11.5-11.793.071.9-246.9-20.8-73.9-14.4-19.5-11.5-10.612.63.0-16.4-14.1-69.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.9-1.7-2.6-2.9-2.8-2.4-2.3-2.6-1.9-2.4-2.8-3.0-1.6-2.5-2.5-2.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments glw:NonReportableSegments0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:OperatingSegments, glw:NonreportableSegments


Net
Period End2021-06-302021-03-312020-06-302020-03-31
Value-15.0-24.0-66.0-69.0
Percentage of NetIncomeLoss-3.3-4.093.071.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.4-0.7-2.6-2.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments glw:NonreportableSegments0.00.00.00.0

us-gaap:OperatingSegments, glw:OpticalCommunications


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-30
Value14811114111581296212715814216516815010956102101827378771733707757386861
Percentage of NetIncomeLoss33.018.556.026.9-114.1-30.2193.837.7171.728.556.526.920.3-18.5-4.026.223.095.34.627.53.5-4.614.733.015.514.03.86.736.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax4.23.44.23.83.21.22.24.35.45.05.45.65.54.42.13.94.03.52.93.13.30.81.53.13.32.51.62.72.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments glw:OpticalCommunications0.00.00.00.00.00.00.00.00.00.00.015.014.712.36.011.111.510.08.99.89.82.84.59.49.68.25.69.78.9

us-gaap:OperatingSegments, glw:ReportableSegments


Net
Period End2021-06-302021-03-312020-06-302020-03-31
Value610537354305
Percentage of NetIncomeLoss135.989.6-498.6-317.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax17.416.313.812.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments glw:ReportableSegments0.00.00.00.0

us-gaap:OperatingSegments, glw:ReportableSegments1


Net
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value629554354305438524543485563592491419154494484480
Percentage of NetIncomeLoss249.6129.7-498.6-317.71368.8155.5590.297.2192.894.766.5-71.1-10.9126.7110.3558.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax18.818.513.812.815.517.918.517.218.619.717.916.85.818.919.420.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments glw:ReportableSegments10.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:OperatingSegments, glw:SpecialtyMaterials


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-30
Value8191136146905194926749871166446737256486842382639464438254339
Percentage of NetIncomeLoss18.015.254.034.2-126.8-53.1293.827.372.89.829.818.68.7-7.8-5.218.512.855.84.314.81.7-7.117.421.78.99.32.54.223.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax2.32.84.14.93.52.13.33.12.31.72.93.92.31.82.82.82.22.02.71.71.61.31.72.01.91.71.01.71.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments glw:SpecialtyMaterials0.00.00.00.00.00.00.00.00.00.00.025.318.716.518.619.316.616.020.214.214.311.514.216.016.214.07.813.113.1

us-gaap:OperatingSegments, us-gaap:AllOtherSegments


Net
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-30
Value-15.0-24.0-50.0-66.0-69.0-70.0-68.0-72.0-72.0-78.0-74.0-55.0-58.0-53.0-53.0-47.0-55.0-85.0-71.0-38.0-45.0-48.0-58.0-41.0-59.0
Percentage of NetIncomeLoss-3.3-4.0-11.793.071.9-20.8-73.9-14.4-11.5-10.612.6-14.1-13.2-61.6-3.4-16.5-2.523.1-31.7-17.9-9.1-11.8-5.9-4.0-34.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.4-0.7-1.7-2.6-2.9-2.4-2.3-2.6-2.4-2.8-3.0-2.1-2.3-2.2-2.1-1.9-2.3-4.2-3.2-1.7-1.9-2.1-2.4-1.6-2.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments us-gaap:AllOtherSegments0.00.00.00.00.00.00.00.0-130.9-152.9-148.0-110.0-123.4-147.2-132.5-127.0-148.6-223.7-221.9-316.7-409.1-533.3-305.3-410.0-1966.7

Profit Loss

us-gaap:ProfitLoss

us-gaap:ProfitLoss


Profit
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value454601432-65.0-96.0341105505633744-586.05614655014342195394724984908117557471044785912815
Percentage of ProfitLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax13.018.314.4-2.5-4.011.63.618.021.027.1-23.428.722.525.323.910.226.424.725.926.039.137.738.859.249.053.352.5

us-gaap:ProfitLoss us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName

glw:AffiliatedCompanies


Profit
Period End2020-12-312020-09-302020-06-302019-12-312019-09-302019-06-30
Value-26.0-192.0163-115.04676
Percentage of ProfitLoss0.0-44.4-250.80.013.572.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.8-6.46.4-4.11.62.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax glw:AffiliatedCompanies0.00.00.00.00.00.0

glw:HSG


Profit
Period End2020-12-312020-09-302020-06-302019-12-312019-09-302019-06-30
Value0.0-154.0163-111.04271
Percentage of ProfitLoss0.0-35.6-250.80.012.367.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.0-5.16.4-3.91.42.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax glw:HSG0.00.00.00.00.00.0

us-gaap:ProfitLoss us-gaap:StatementEquityComponents

us-gaap:NoncontrollingInterest


Profit
Period End2021-06-302021-03-312020-09-302020-06-302019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value5.02.05.06.04.0136.08.06.03.0
Percentage of ProfitLoss1.10.31.2-9.21.212.41.21.30.8-0.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.10.10.20.20.10.40.20.30.20.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:NoncontrollingInterest0.00.00.00.00.00.00.00.00.00.0

us-gaap:Parent


Profit
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value449599427-71.0-96.033792499625738-589.0
Percentage of ProfitLoss98.999.798.8109.2100.098.887.698.898.799.2100.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax12.818.214.2-2.8-4.011.53.117.720.826.9-23.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:Parent0.00.00.00.00.00.00.00.00.00.00.0

us-gaap:RetainedEarnings


Profit
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value449599427-71.0-96.033792499625738-589.0
Percentage of ProfitLoss98.999.798.8109.2100.098.887.698.898.799.2100.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax12.818.214.2-2.8-4.011.53.117.720.826.9-23.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.00.00.0

Share Based Compensation

us-gaap:ShareBasedCompensation

us-gaap:ShareBasedCompensation


Share
Period End2020-12-312020-09-302019-12-312019-09-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value80621313149.010.0149.010.0111510.01119131514151411141616242021222315222629
Percentage of ShareBasedCompensation100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Net Cash Provided By Used In Investing Activities

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:NetCashProvidedByUsedInInvestingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value-127.0-288.0-378.0-148.0-245.0-539.0-357.0-500.0-551.0-483.0-621.0-511.0-1111.0-644.0-492.0-584.0-308.0-326.0-294.0-282.04314-76.0137-199.090-713.0-209.0-170.0-282.0-301.0-429.0-225.0-228.0-122.0-1007.0-482.0-535.0-604.0-476.0-418.0-505.0-657.0-560.0-902.0-384.077
Percentage of NetCashProvidedByUsedInInvestingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-3.6-8.8-11.3-4.9-9.6-22.5-12.7-17.0-18.7-17.2-20.5-17.0-40.4-25.8-18.7-22.4-12.3-13.7-11.9-11.2182.8-3.76.1-8.83.8-31.5-8.7-6.7-11.4-13.1-21.9-10.9-11.5-6.7-46.9-23.7-28.0-31.5-25.2-20.1-25.2-34.2-31.7-56.3-22.45.0

Payments To Acquire Productive Assets

us-gaap:PaymentsToAcquireProductiveAssets

us-gaap:PaymentsToAcquireProductiveAssets


Payments
Period End2020-09-302019-09-30
Value153508
Percentage of PaymentsToAcquireProductiveAssets100.0100.0

Net Cash Provided By Used In Financing Activities

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:NetCashProvidedByUsedInFinancingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value-1199.0-190.0-314.0-143.0-178.0-94.0786-571.0131-393.0121-538.0-619.0-959.0-29.0-457.0-750.0-388.0-448.0-2735.0-1210.0-913.0-1014.0-980.0-35.0-574.0-740.0-357.0-312.0-1177.0-716.0-363.0-355.0-629.0-209.0-166.0-332.0592-805.0-46.0-72.0-57.0-175.0346-62.0-111.0
Percentage of NetCashProvidedByUsedInFinancingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-34.2-5.8-9.4-4.8-7.0-3.927.9-19.54.5-14.04.0-17.9-22.5-38.4-1.1-17.5-30.0-16.3-18.1-109.1-51.3-44.6-45.5-43.1-1.5-25.3-30.8-14.1-12.6-51.4-36.6-17.6-17.9-34.7-9.7-8.1-17.430.8-42.7-2.2-3.6-3.0-9.921.6-3.6-7.1

Payments For Repurchase Of Common Stock

us-gaap:PaymentsForRepurchaseOfCommonStock

us-gaap:PaymentsForRepurchaseOfCommonStock


Payments
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302012-12-312012-09-30
Value0.00.00.010523230115025734739768380038810196454003432369812703132381261647718322417519011075209140194
Percentage of PaymentsForRepurchaseOfCommonStock0.00.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PaymentsForRepurchaseOfCommonStock us-gaap:CounterpartyName, us-gaap:ShareRepurchaseProgram

glw:Samsung, glw:ShareRepurchaseAgreement


Payments
Period End2021-04-08
Value507
Percentage of PaymentsForRepurchaseOfCommonStock0.0

us-gaap:PaymentsForRepurchaseOfCommonStock us-gaap:CounterpartyName, us-gaap:ShareRepurchaseProgram, us-gaap:SubsequentEventType

glw:Samsung, glw:ShareRepurchaseAgreement, us-gaap:SubsequentEvent


Payments
Period End2021-04-08
Value507
Percentage of PaymentsForRepurchaseOfCommonStock0.0

Effective Income Tax Rate Continuing Operations

us-gaap:EffectiveIncomeTaxRateContinuingOperations

us-gaap:EffectiveIncomeTaxRateContinuingOperations


Effective
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value13.027.46.55.1-0.4490.111-0.0150.1740.5740.132-0.040.1750.1460.2671.1390.1860.2583.30.647-0.105-0.296-0.452-0.0540.0280.1820.174-0.0280.280.5040.3740.0150.2570.230.0640.0160.1430.1680.194-0.0030.1190.140.1320.0220.0180.0330.106
Percentage of EffectiveIncomeTaxRateContinuingOperations100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber


Share
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302019-12-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-302013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value121417212313181920243134384042434443485051525760616264666869656667687292
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber us-gaap:AwardType

us-gaap:EmployeeStockOption


Share
Period End2020-12-312019-12-31
Value1713
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber100.0100.0

Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice


Share
Period End2020-09-302020-06-302019-12-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-302013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value21.1721.021.9418.5918.7218.7719.0419.419.2419.0219.4119.419.419.3919.2618.9418.8118.6918.3917.8317.5217.2816.9916.6316.1815.9315.8415.9115.8115.7915.7916.2225.83
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice us-gaap:AwardType

us-gaap:EmployeeStockOption


Share
Period End2020-12-312019-12-31
Value21.621.94
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice0.0100.0

Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Grants In Period

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod

glw:RestrictedStockAndRestrictedStockUnits


Share
Period End2021-06-302021-03-31
Value1068000.0316000.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod100.0100.0

glw:TimebasedRestrictedStockAndRestrictedStockUnits


Share
Period End2020-12-31
Value128000.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod0.0

us-gaap:PerformanceShares


Share
Period End2021-06-302021-03-31
Value396000.0826000.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod37.1261.4

Deferred Tax Liabilities

us-gaap:DeferredTaxLiabilities

us-gaap:DeferredTaxLiabilities


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-312008-12-31
Value63044735244033846545132123097-22.0-46.026
Percentage of DeferredTaxLiabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxLiabilities us-gaap:BusinessAcquisition

glw:HSG


Deferred
Period End2020-09-30
Value9.0
Percentage of DeferredTaxLiabilities0.0

Deferred Tax Assets Net

us-gaap:DeferredTaxAssetsNet

us-gaap:DeferredTaxAssetsNet


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-31
Value1438127995680223462181220728193137313731863250
Percentage of DeferredTaxAssetsNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Unrecognized Tax Benefits

us-gaap:UnrecognizedTaxBenefits

us-gaap:UnrecognizedTaxBenefits


Unrecognized
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-31
Value1316243525224325310.01516212340
Percentage of UnrecognizedTaxBenefits100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Deferred Tax Assets Valuation Allowance

us-gaap:DeferredTaxAssetsValuationAllowance

us-gaap:DeferredTaxAssetsValuationAllowance


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-31
Value167215317456270238298286210219-214.0-245.0
Percentage of DeferredTaxAssetsValuationAllowance100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

glw:BondRedemptionGainLoss us-gaap:DebtInstrument

glw:BondRedemptionGainLoss

glw:DebenturesB


Bond
Period End2020-12-31
Value-22000000.0
Percentage of BondRedemptionGainLoss100.0

glw:CapacityRealignment

glw:CapacityRealignment


Capacity
Period End2020-12-312020-09-302020-06-302019-12-312019-09-302019-06-30
Value59966014410761
Percentage of CapacityRealignment100.0100.0100.0100.0100.0100.0

glw:CapacityRealignment us-gaap:IncomeStatementLocation

glw:GrossMargin


Capacity
Period End2020-12-312020-09-302020-06-302019-12-312019-09-302019-06-30
Value4595601439461
Percentage of CapacityRealignment76.399.0100.099.387.9100.0

glw:ResearchDevelopmentAndEngineeringExpenses


Capacity
Period End2020-09-302019-12-312019-09-30
Value1.01.013
Percentage of CapacityRealignment1.00.712.1

glw:CapacityRealignmentAndOtherRestructuringCosts us-gaap:ConsolidationItems

glw:CapacityRealignmentAndOtherRestructuringCosts

us-gaap:MaterialReconcilingItems


Capacity
Period End2021-06-302020-06-302020-03-31
Value1.084148
Percentage of CapacityRealignmentAndOtherRestructuringCosts100.0100.0100.0

glw:ChangeInAllocatedShareBasedCompensationExpense

glw:ChangeInAllocatedShareBasedCompensationExpense


Change
Period End2021-03-31
Value24
Percentage of ChangeInAllocatedShareBasedCompensationExpense100.0

glw:CumulativeAdjustmentRelatedToCustomerContract

glw:CumulativeAdjustmentRelatedToCustomerContract


Cumulative
Period End2020-12-312020-09-302020-06-302020-03-31
Value0.00.00.0-105.0
Percentage of CumulativeAdjustmentRelatedToCustomerContract0.00.00.0100.0

glw:CumulativeAdjustmentRelatedToCustomerContract us-gaap:ConsolidationItems

us-gaap:MaterialReconcilingItems


Cumulative
Period End2020-09-302020-06-302020-03-31
Value0.00.0-105.0
Percentage of CumulativeAdjustmentRelatedToCustomerContract0.00.0100.0

glw:EmployeeBenefitPaymentsLessThanInExcessOfExpense

glw:EmployeeBenefitPaymentsLessThanInExcessOfExpense


Employee
Period End2020-12-312019-12-312017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value-164.0369.0-92.0-15.08.07.0-57.013-2.0-6.0-47.023-11.0-17.0188.0111593-24.033-66.027373434-184.0-53.0-54.026
Percentage of EmployeeBenefitPaymentsLessThanInExcessOfExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

glw:EquityInvestmentLiability us-gaap:BusinessAcquisition

glw:EquityInvestmentLiability

glw:HSG


Equity
Period End2020-09-09
Value248
Percentage of EquityInvestmentLiability100.0

glw:EquityMethodInvestmentSummarizedFinancialInformationGainsLossOnSettlementsOfLongTermSalesAgreementsNet us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName

glw:EquityMethodInvestmentSummarizedFinancialInformationGainsLossOnSettlementsOfLongTermSalesAgreementsNet

glw:HSG


Equity
Period End2020-09-30
Value19
Percentage of EquityMethodInvestmentSummarizedFinancialInformationGainsLossOnSettlementsOfLongTermSalesAgreementsNet100.0

glw:EquityMethodInvestmentSummarizedFinancialInformationPreTaxGainLossOnSettlementsOfLongTermSalesAgreements us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName

glw:EquityMethodInvestmentSummarizedFinancialInformationPreTaxGainLossOnSettlementsOfLongTermSalesAgreements

glw:HSG


Equity
Period End2020-09-302020-06-30
Value200165
Percentage of EquityMethodInvestmentSummarizedFinancialInformationPreTaxGainLossOnSettlementsOfLongTermSalesAgreements100.0100.0

glw:ForeignCurrencyDebtNotIncludedInSegments us-gaap:ConsolidationItems

glw:ForeignCurrencyDebtNotIncludedInSegments

us-gaap:MaterialReconcilingItems


Foreign
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-312017-09-30
Value5.0118-36.0-39.03.0-14.01311-36.015-46.03037-28.014
Percentage of ForeignCurrencyDebtNotIncludedInSegments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

glw:ForeignCurrencyTranslationsNotIncludedInSegment

glw:ForeignCurrencyTranslationsNotIncludedInSegment


Foreign
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value22000000.0-6000000.0-27000000.0-33000000.0-34000000.0-35000000.0-46000000.0-38000000.0-46000000.0-37000000.0-12000000.0-13000000.0-38000000.0-28000000.0-30000000.0-46000000.0
Percentage of ForeignCurrencyTranslationsNotIncludedInSegment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

glw:ForeignCurrencyTranslationsNotIncludedInSegmentNetIncome us-gaap:ConsolidationItems

glw:ForeignCurrencyTranslationsNotIncludedInSegmentNetIncome

us-gaap:MaterialReconcilingItems


Foreign
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value-20000000.06000000.03000000.00-6000000.0-19000000.0-22000000.0-20000000.0-36000000.0-37000000.0-47000000.0-42000000.0-32000000.0-31000000.0-44000000.0-34000000.0-40000000.0
Percentage of ForeignCurrencyTranslationsNotIncludedInSegmentNetIncome100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

glw:IndemnificationOfExcessLiability us-gaap:LitigationCase, us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName

glw:IndemnificationOfExcessLiability

glw:DowCorningBreastImplantLitigation, glw:DowCorningCorporation


Indemnification
Period End2021-06-302021-03-31
Value050.0
Percentage of IndemnificationOfExcessLiability0.0100.0

glw:DowCorningEnvironmentalClaims, glw:DowCorningCorporation


Indemnification
Period End2021-06-302021-03-31
Value050.0
Percentage of IndemnificationOfExcessLiability0.0100.0

glw:LongTermIncentivePlanAnnualTargetedCompensation us-gaap:TitleOfIndividual

glw:LongTermIncentivePlanAnnualTargetedCompensation

srt:ExecutiveOfficer


Long
Period End2020-09-30
Value74.25
Percentage of LongTermIncentivePlanAnnualTargetedCompensation100.0

glw:OtherComprehensiveIncomeLossEquityMethodInvestmentsNetOfTax us-gaap:StatementEquityComponents

glw:OtherComprehensiveIncomeLossEquityMethodInvestmentsNetOfTax

us-gaap:AccumulatedTranslationAdjustment


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302012-12-312012-09-302012-06-30
Value1.0-8.0169.03.0-12.03.0-3.0-1.0-12.06.00.0-15.04.0134.03.016-24.010.0-44.043-25.0-18.022-82.0110-76.07.0-157.081241-72.0143111-56.0
Percentage of OtherComprehensiveIncomeLossEquityMethodInvestmentsNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

glw:PreTaxGainOnPreviouslyHeldEquityInvestment us-gaap:BusinessAcquisition

glw:PreTaxGainOnPreviouslyHeldEquityInvestment

glw:HSG


Pre
Period End2020-09-09
Value498
Percentage of PreTaxGainOnPreviouslyHeldEquityInvestment100.0

glw:ReconciliationOfOtherCorporateItems us-gaap:ConsolidationItems

glw:ReconciliationOfOtherCorporateItems

us-gaap:MaterialReconcilingItems


Reconciliation
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value127-80.0898261-4.019317512212127436637-75.03086-71.0
Percentage of ReconciliationOfOtherCorporateItems100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

glw:ResearchDevelopmentAndEngineeringExpenses

glw:ResearchDevelopmentAndEngineeringExpenses


Research
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value2422222322314302612782552492492652442432412402132072001731871921902081811911892101992081981691841791782191851881871165-166.01721561040-148.0144145
Percentage of ResearchDevelopmentAndEngineeringExpenses100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

glw:ResearchDevelopmentAndEngineeringExpenses us-gaap:ConsolidationItems

us-gaap:MaterialReconcilingItems


Research
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value353442353739603335363531303934252227
Percentage of ResearchDevelopmentAndEngineeringExpenses14.515.318.115.28.614.921.612.914.114.513.212.712.316.214.211.710.613.5

us-gaap:OperatingSegments


Research
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-30
Value200187187177181209234206214213223213212202213187185175148159164164185149163161184173183
Percentage of ResearchDevelopmentAndEngineeringExpenses82.684.280.676.642.180.184.280.885.985.584.287.387.283.888.887.889.487.585.585.085.486.388.982.385.385.287.686.988.0

glw:ResearchDevelopmentAndEngineeringExpenses us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, glw:DisplayProducts


Research
Period End2021-06-302021-03-312020-06-302020-03-31
Value26222530
Percentage of ResearchDevelopmentAndEngineeringExpenses10.79.95.811.5

us-gaap:OperatingSegments, glw:DisplayTechnologies


Research
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-30
Value22222530343029263026272325212319-4.014171827282624213141
Percentage of ResearchDevelopmentAndEngineeringExpenses9.59.55.811.512.211.811.610.411.310.711.19.510.49.911.19.5-2.37.58.99.513.015.513.612.710.015.619.7

us-gaap:OperatingSegments, glw:EnvironmentalTechnologies


Research
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-30
Value2927262422283129283032282929332827252724262526212323262321
Percentage of ResearchDevelopmentAndEngineeringExpenses12.012.211.210.45.110.711.211.411.212.012.111.511.912.013.813.113.012.515.612.813.513.212.511.612.012.212.411.610.1

us-gaap:OperatingSegments, glw:LifeScienceProducts


Research
Period End2021-06-302021-03-312020-06-302020-03-31
Value8.08.06.07.0
Percentage of ResearchDevelopmentAndEngineeringExpenses3.33.61.42.7

us-gaap:OperatingSegments, glw:LifeSciences


Research
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-30
Value6.07.06.07.06.05.05.05.05.05.05.05.05.05.06.06.06.06.06.06.06.06.06.05.06.06.05.0
Percentage of ResearchDevelopmentAndEngineeringExpenses2.63.01.42.72.22.02.02.01.92.02.12.12.12.32.93.03.53.23.13.22.93.33.12.62.93.02.4

us-gaap:OperatingSegments, glw:OpticalCommunications


Research
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-30
Value5251475052555553545659535149534440373737363737333533353534
Percentage of ResearchDevelopmentAndEngineeringExpenses21.523.020.321.612.121.119.820.821.722.522.321.721.020.322.120.719.318.521.419.818.819.517.818.218.317.516.717.616.3

us-gaap:OperatingSegments, glw:SpecialtyMaterials


Research
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-30
Value4945423933413537414140434139423737363031343126272931383534
Percentage of ResearchDevelopmentAndEngineeringExpenses20.220.318.116.97.715.712.614.516.516.515.117.616.916.217.517.417.918.017.316.617.716.312.514.915.216.418.117.616.3

us-gaap:OperatingSegments, us-gaap:AllOtherSegments


Research
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-30
Value36343543485257555859575252525247454763344445584348
Percentage of ResearchDevelopmentAndEngineeringExpenses14.915.315.210.018.420.422.922.123.824.323.724.425.126.030.125.123.424.730.318.823.023.827.621.623.1

glw:RevenueCurrencyAdjustment

glw:RevenueCurrencyAdjustment


Revenue
Period End2021-06-302021-03-312020-06-302020-03-31
Value3.0-27.02733
Percentage of RevenueCurrencyAdjustment100.0100.0100.0100.0

glw:RevenueCurrencyAdjustment us-gaap:IncomeStatementLocation

us-gaap:ForeignCurrencyGainLoss


Revenue
Period End2020-09-302020-06-302020-03-312019-09-302019-06-302019-03-31
Value6.02733354638
Percentage of RevenueCurrencyAdjustment0.0100.0100.00.00.00.0

glw:RevenueNet

glw:RevenueNet


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value3504326333283007258825292851296929862850
Percentage of RevenueNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

glw:SalesRevenueGoodsBeforeForeignCurrencyTranslations

glw:SalesRevenueGoodsBeforeForeignCurrencyTranslations


Sales
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value3328300725882529285129692986285030813045275925132675263525272421
Percentage of SalesRevenueGoodsBeforeForeignCurrencyTranslations100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

glw:SalesRevenueGoodsBeforeForeignCurrencyTranslations us-gaap:ConsolidationItems

us-gaap:OperatingSegments


Sales
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value3504326333283007258825292851296929862850
Percentage of SalesRevenueGoodsBeforeForeignCurrencyTranslations0.00.0100.0100.0100.0100.0100.0100.0100.0100.0

glw:SalesRevenueGoodsBeforeForeignCurrencyTranslations us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, glw:DisplayProducts


Sales
Period End2021-06-302021-03-312020-06-302020-03-31
Value939863753751
Percentage of SalesRevenueGoodsBeforeForeignCurrencyTranslations0.00.029.129.7

us-gaap:OperatingSegments, glw:DisplayTechnologies


Sales
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value841827753751795793848818
Percentage of SalesRevenueGoodsBeforeForeignCurrencyTranslations25.327.529.129.727.926.728.428.7

us-gaap:OperatingSegments, glw:EnvironmentalTechnologies


Sales
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value407441445379226320374397366362
Percentage of SalesRevenueGoodsBeforeForeignCurrencyTranslations0.00.013.412.68.712.713.113.412.312.7

us-gaap:OperatingSegments, glw:LifeScienceProducts


Sales
Period End2021-06-302021-03-312020-06-302020-03-31
Value312300243258
Percentage of SalesRevenueGoodsBeforeForeignCurrencyTranslations0.00.09.410.2

us-gaap:OperatingSegments, glw:LifeSciences


Sales
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value274223243258256256260243
Percentage of SalesRevenueGoodsBeforeForeignCurrencyTranslations8.27.49.410.29.08.68.78.5

us-gaap:OperatingSegments, glw:OpticalCommunications


Sales
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value1075937976909887791903100710901064
Percentage of SalesRevenueGoodsBeforeForeignCurrencyTranslations0.00.029.330.234.331.331.733.936.537.3

us-gaap:OperatingSegments, glw:SpecialtyMaterials


Sales
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value483451545570417352453463369309
Percentage of SalesRevenueGoodsBeforeForeignCurrencyTranslations0.00.016.419.016.113.915.915.612.410.8

us-gaap:OperatingSegments, us-gaap:AllOtherSegments


Sales
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value288271996257-313.0535354
Percentage of SalesRevenueGoodsBeforeForeignCurrencyTranslations0.00.03.32.42.3-11.01.81.81.9

glw:SeverencePayments

glw:SeverencePayments


Severence
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value7.013-21.0-29.0-172.075-21.0-2.0
Percentage of SeverencePayments100.0100.0100.0100.0100.0100.0100.0100.0

glw:SharesIssuedToBenefitPlansAndForOptionExercises

glw:SharesIssuedToBenefitPlansAndForOptionExercises


Shares
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value7381975917193531444030
Percentage of SharesIssuedToBenefitPlansAndForOptionExercises100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

glw:SharesIssuedToBenefitPlansAndForOptionExercises us-gaap:StatementEquityComponents

us-gaap:AdditionalPaidInCapital


Shares
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value7080965817183431433930
Percentage of SharesIssuedToBenefitPlansAndForOptionExercises95.998.899.098.3100.094.797.1100.097.797.5100.0

us-gaap:CommonStock


Shares
Period End2021-06-302021-03-312020-09-302020-06-302019-09-302019-06-302018-09-302018-06-30
Value3.01.01.01.01.01.01.01.0
Percentage of SharesIssuedToBenefitPlansAndForOptionExercises4.11.21.01.75.32.92.32.5

us-gaap:Parent


Shares
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value7381975917193531444030
Percentage of SharesIssuedToBenefitPlansAndForOptionExercises100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

glw:TaxAssessmentRefunds

glw:TaxAssessmentRefunds


Tax
Period End2020-12-312020-09-302020-06-302020-03-31
Value000-101000000.0
Percentage of TaxAssessmentRefunds0.00.00.0100.0

glw:TranslatedEarningsContractGainLossNet

glw:TranslatedEarningsContractGainLossNet


Translated
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value3.0272-43.0-100.037688586-107.0184
Percentage of TranslatedEarningsContractGainLossNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

glw:TranslatedEarningsContractGainLossNet us-gaap:ConsolidationItems

us-gaap:MaterialReconcilingItems


Translated
Period End2021-06-302021-03-312020-06-302020-03-31
Value3.02723558
Percentage of TranslatedEarningsContractGainLossNet100.0100.094.685.3

glw:TranslationGainLossOnJapaneseYenDenominatedDebt

glw:TranslationGainLossOnJapaneseYenDenominatedDebt


Translation
Period End2021-06-302021-03-312020-06-302020-03-31
Value5.01183.0-14.0
Percentage of TranslationGainLossOnJapaneseYenDenominatedDebt100.0100.0100.0100.0

glw:UnrealizedPostretirementBenefitPlanLossesAndPriorService

glw:UnrealizedPostretirementBenefitPlanLossesAndPriorService


Unrealized
Period End2020-12-312020-09-302020-06-302019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value80-4.01216-4.00.052-25.01.06.0-1.0-13.00.0-16.0-1.0195.0-265.0-109.0-6.0-5.0-1.02840.06.0-9.0-348.0-14.0-23.01.0
Percentage of UnrealizedPostretirementBenefitPlanLossesAndPriorService100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0

us-gaap:AssetImpairmentCharges

us-gaap:AssetImpairmentCharges


Asset
Period End2020-12-312020-09-302020-06-302012-12-312011-12-31
Value0.02219544130
Percentage of AssetImpairmentCharges0.0100.0100.0100.0100.0

us-gaap:AssetImpairmentCharges us-gaap:ConsolidationItems

us-gaap:MaterialReconcilingItems


Asset
Period End2020-09-302020-06-30
Value22195
Percentage of AssetImpairmentCharges100.0100.0

us-gaap:AssetImpairmentCharges us-gaap:IncomeStatementLocation

glw:ResearchDevelopmentAndEngineeringExpenses


Asset
Period End2020-12-312020-09-302020-06-30
Value0.016195
Percentage of AssetImpairmentCharges0.072.7100.0

us-gaap:SellingGeneralAndAdministrativeExpenses


Asset
Period End2020-12-312020-09-30
Value0.06.0
Percentage of AssetImpairmentCharges0.027.3

us-gaap:BusinessCombinationConsiderationTransferred1 dei:LegalEntity, us-gaap:BusinessAcquisition

us-gaap:BusinessCombinationConsiderationTransferred1

glw:HSG, glw:DupontsTrichlorosilane


Business
Period End2020-09-09
Value255
Percentage of BusinessCombinationConsiderationTransferred1100.0

glw:HSG, glw:HSG


Business
Period End2020-09-09
Value250
Percentage of BusinessCombinationConsiderationTransferred198.0

us-gaap:BusinessCombinationConsiderationTransferred1 us-gaap:BusinessAcquisition

glw:HSG


Business
Period End2020-09-09
Value250
Percentage of BusinessCombinationConsiderationTransferred198.0

glw:HemlockSemiconductorOperationsLLC


Business
Period End2020-09-09
Value352
Percentage of BusinessCombinationConsiderationTransferred1138.0

glw:HemlockSemiconductorOperationsLlc


Business
Period End2020-09-09
Value352
Percentage of BusinessCombinationConsiderationTransferred1138.0

us-gaap:ConversionOfStockAmountConverted1 us-gaap:StatementEquityComponents

us-gaap:ConversionOfStockAmountConverted1

us-gaap:PreferredStock


Conversion
Period End2021-06-30
Value1600
Percentage of ConversionOfStockAmountConverted1100.0

us-gaap:ConversionOfStockAmountIssued1 us-gaap:StatementEquityComponents

us-gaap:ConversionOfStockAmountIssued1

us-gaap:AdditionalPaidInCapital


Conversion
Period End2021-06-30
Value1560
Percentage of ConversionOfStockAmountIssued1100.0

us-gaap:CommonStock


Conversion
Period End2021-06-30
Value40
Percentage of ConversionOfStockAmountIssued12.6

us-gaap:ConversionOfStockSharesIssued1 us-gaap:ConversionOfStockByUniqueDescription

us-gaap:ConversionOfStockSharesIssued1

glw:ConversionOfPreferredStockIntoCommonStock


Conversion
Period End2021-04-08
Value115
Percentage of ConversionOfStockSharesIssued1100.0

us-gaap:ConversionOfStockSharesIssued1 us-gaap:CounterpartyName, us-gaap:ConversionOfStockByUniqueDescription, us-gaap:SubsequentEventType

glw:Samsung, glw:ConversionOfPreferredStockIntoSharesOfCommonStock, us-gaap:SubsequentEvent


Conversion
Period End2021-04-05
Value115
Percentage of ConversionOfStockSharesIssued10.0

us-gaap:ConvertiblePreferredDividendsNetOfTax

us-gaap:ConvertiblePreferredDividendsNetOfTax


Convertible
Period End2021-03-312020-09-302019-12-312019-09-302018-12-312018-09-302018-06-302017-09-302017-06-302016-12-312016-09-302016-06-30
Value242425242524242424252424
Percentage of ConvertiblePreferredDividendsNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DefinedBenefitPlanActuarialGainLossImmediateRecognitionAsComponentInNetPeriodicBenefitCostCredit us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanActuarialGainLossImmediateRecognitionAsComponentInNetPeriodicBenefitCostCredit

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2021-06-30
Value-1000000.0
Percentage of DefinedBenefitPlanActuarialGainLossImmediateRecognitionAsComponentInNetPeriodicBenefitCostCredit100.0

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2021-06-302020-06-302019-09-302019-06-302018-12-312018-09-302018-06-30
Value-10000000.02000000.00-23000000.0-144000000.00-1000000.0
Percentage of DefinedBenefitPlanActuarialGainLossImmediateRecognitionAsComponentInNetPeriodicBenefitCostCredit1000.00.00.00.00.00.00.0

us-gaap:DefinedBenefitPlanAmortizationOfGainsLosses us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanAmortizationOfGainsLosses

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-12-312020-09-302020-06-302019-12-312019-09-302019-06-302018-12-312018-09-302018-06-302017-12-312017-09-302017-06-30
Value-24.00.02.0-67.00.0-23.0-144.00.0-1.0-6.00.0-15.0
Percentage of DefinedBenefitPlanAmortizationOfGainsLosses100.00.0100.0100.00.0100.0100.00.0100.0100.00.0100.0

us-gaap:DefinedBenefitPlanAmortizationOfPriorServiceCostCredit us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanAmortizationOfPriorServiceCostCredit

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-31
Value-2000000.0-1000000.0-2000000.0-2000000.0-1000000.0-2000000.0-2000000.0-2000000.0-2000000.0-2000000.0-1000000.0-1000000.00-1000000.0
Percentage of DefinedBenefitPlanAmortizationOfPriorServiceCostCredit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value1000000.01000000.01000000.01000000.02000000.01000000.01000000.02000000.01000000.02000000.002000000.02000000.02000000.01000000.01000000.02000000.01000000.0
Percentage of DefinedBenefitPlanAmortizationOfPriorServiceCostCredit-50.0-100.00.0-50.0-100.0-100.00.0-100.0-50.0-100.00.0-100.0-100.0-200.00.0-100.00.0-100.0

us-gaap:DefinedBenefitPlanExpectedReturnOnPlanAssets us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanExpectedReturnOnPlanAssets

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value54-54.048494949434243434747484744434443
Percentage of DefinedBenefitPlanExpectedReturnOnPlanAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DefinedBenefitPlanInterestCost us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanInterestCost

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-31
Value4.04.05.05.05.07.07.07.06.06.06.07.06.07.0
Percentage of DefinedBenefitPlanInterestCost100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value212228323131373737373532333232323131
Percentage of DefinedBenefitPlanInterestCost525.0550.00.0640.0620.0620.00.0528.6528.6528.60.0533.3550.0533.30.0457.1516.7442.9

us-gaap:DefinedBenefitPlanNetPeriodicBenefitCost us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanNetPeriodicBenefitCost

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-31
Value6.05.06.06.06.07.07.07.07.07.08.08.08.09.0
Percentage of DefinedBenefitPlanNetPeriodicBenefitCost100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value10.01.0361311128722442115813141218122713
Percentage of DefinedBenefitPlanNetPeriodicBenefitCost166.720.00.0216.7183.3200.00.0314.3628.6300.00.0185.7200.0150.00.0150.0337.5144.4

us-gaap:DefinedBenefitPlanRecognizedNetGainLossDueToSettlementsAndCurtailments1 us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanRecognizedNetGainLossDueToSettlementsAndCurtailments1

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2020-09-302019-09-30
Value-1000000.01000000.0
Percentage of DefinedBenefitPlanRecognizedNetGainLossDueToSettlementsAndCurtailments1100.0100.0

us-gaap:DefinedBenefitPlanServiceCost us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanServiceCost

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-31
Value3.02.02.03.02.03.02.02.03.03.03.02.02.03.0
Percentage of DefinedBenefitPlanServiceCost100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value323231292929252526252626262523222324
Percentage of DefinedBenefitPlanServiceCost1066.71600.00.01450.0966.71450.00.0833.31300.01250.00.0866.7866.7833.30.01100.01150.0800.0

us-gaap:DefinedContributionPlanEmployerDiscretionaryContributionAmount us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType

us-gaap:DefinedContributionPlanEmployerDiscretionaryContributionAmount

country:US, us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-09-30
Value60
Percentage of DefinedContributionPlanEmployerDiscretionaryContributionAmount100.0

us-gaap:Depreciation

us-gaap:Depreciation


Depreciation
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value336330358361324356364368352306304291300304284276263260287283280281288280283279290294294289241240242248261244238235243241232226222212206206
Percentage of Depreciation100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:Depreciation us-gaap:ConsolidationItems

us-gaap:OperatingSegments


Depreciationus-gaap:
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-30
Value332327333293293296294295300303289-287.0287283282274263258288277276278282273280273290287290
Percentage of Depreciation98.899.193.081.290.483.180.880.285.299.095.1-98.695.793.199.399.3100.099.2100.397.998.698.997.997.598.997.8100.097.698.6

us-gaap:Depreciation us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, glw:DisplayProducts


Depreciationus-gaap:
Period End2021-06-302021-03-312020-06-302020-03-31
Value149148133133
Percentage of Depreciation44.344.841.037.4

us-gaap:OperatingSegments, glw:DisplayTechnologies


Depreciationus-gaap:
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-30
Value148134133133138144149152149-146.0146144141134130129146152149151150147152156166166171
Percentage of Depreciation41.337.141.037.437.939.142.349.749.0-50.248.747.449.648.649.449.650.953.753.253.752.152.553.755.957.256.558.2

us-gaap:OperatingSegments, glw:EnvironmentalTechnologies


Depreciationus-gaap:
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-30
Value3536333233343332323130-30.03029313131313232333232323229302930
Percentage of Depreciation10.410.99.28.910.29.69.18.79.110.19.9-10.310.09.510.911.211.811.911.111.311.811.411.111.411.310.410.39.910.2

us-gaap:OperatingSegments, glw:LifeScienceProducts


Depreciationus-gaap:
Period End2021-06-302021-03-312020-06-302020-03-31
Value14121312
Percentage of Depreciation4.23.64.03.4

us-gaap:OperatingSegments, glw:LifeSciences


Depreciationus-gaap:
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-30
Value131213121212121311-12.01314131413121614131515151515141516
Percentage of Depreciation3.63.34.03.43.33.33.44.23.6-4.14.34.64.65.14.94.65.64.94.65.35.25.45.35.44.85.15.4

us-gaap:OperatingSegments, glw:OpticalCommunications


Depreciationus-gaap:
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-30
Value5858595962625959605958-55.05352514948455041434141414338433837
Percentage of Depreciation17.317.616.516.319.117.416.216.017.019.319.1-18.917.717.118.017.818.317.317.414.515.414.614.214.615.213.614.812.912.6

us-gaap:OperatingSegments, glw:SpecialtyMaterials


Depreciationus-gaap:
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-30
Value4241424038423835353734-34.03533353431292826272830292726273029
Percentage of Depreciation12.512.411.711.111.711.810.49.59.912.111.2-11.711.710.912.312.311.811.29.89.29.610.010.410.49.59.39.310.29.9

us-gaap:OperatingSegments, us-gaap:AllOtherSegments


Depreciationus-gaap:
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-30
Value3432161413131211-10.010.0111210.01216121111149.0119.010.09.07.0
Percentage of Depreciation10.19.74.44.33.73.53.43.6-3.43.33.64.33.84.65.64.23.93.94.93.23.93.23.43.12.4

us-gaap:DerivativeGainLossOnDerivativeNet us-gaap:ConsolidationItems

us-gaap:DerivativeGainLossOnDerivativeNet

us-gaap:MaterialReconcilingItems


Derivative
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value-40.0-99.035588484-107.0184144-230.0-458.0622-584.0-26.0-219.0438
Percentage of DerivativeGainLossOnDerivativeNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DerivativeGainLossOnDerivativeNet us-gaap:DerivativeInstrumentRisk, us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship, us-gaap:IncomeStatementLocation

glw:ForeignCurrencyHedgesRelatedToTranslatedEarnings, us-gaap:Nondesignated, us-gaap:GainLossOnDerivativeInstruments


Derivative
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value-43.0-100.037688586-107.0184-159.0230
Percentage of DerivativeGainLossOnDerivativeNet107.5101.0105.7117.2101.2102.4100.0100.0-110.4-100.0

glw:ForeignExchangeAndOtherContractsBalanceSheetLoansAndOther, us-gaap:Nondesignated, us-gaap:OtherNonoperatingIncomeExpense


Derivative
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value-31.0-48.0-15.01.0-17.01921-2.03.010.0
Percentage of DerivativeGainLossOnDerivativeNet77.548.5-42.91.7-20.222.6-19.6-1.12.1-4.3

us-gaap:DerivativeGainLossOnDerivativeNet us-gaap:DerivativeInstrumentRisk, us-gaap:HedgingDesignation, us-gaap:IncomeStatementLocation

glw:TranslatedEarningsContracts, us-gaap:Nondesignated, glw:TranslatedEarningsContractLossGainNet


Derivative
Period End2021-06-302021-03-312020-06-302020-03-31
Value3.02723768
Percentage of DerivativeGainLossOnDerivativeNet0.00.0105.7117.2

us-gaap:ForeignExchangeContract, us-gaap:Nondesignated, glw:OtherExpenseIncomeNet


Derivative
Period End2021-06-302021-03-312020-06-302020-03-31
Value-9.044-15.01.0
Percentage of DerivativeGainLossOnDerivativeNet0.00.0-42.91.7

us-gaap:DerivativeGainLossOnDerivativeNet us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship

us-gaap:Nondesignated


Derivative
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value-74.0-148.0226968105-86.0182-156.0240487-641.07519204-436.01898-241.0-1236.0-894.0
Percentage of DerivativeGainLossOnDerivativeNet185.0149.562.9119.081.0125.080.498.9-108.3-104.3-106.3-103.1-12.8-73.1-93.2-99.50.00.00.00.0

us-gaap:DerivativeGainLossOnDerivativeNet us-gaap:HedgingDesignation

us-gaap:Nondesignated


Derivative
Period End2021-06-302021-03-312020-06-302020-03-31
Value-6.03162269
Percentage of DerivativeGainLossOnDerivativeNet0.00.062.9119.0

us-gaap:DerivativeInstrumentsGainLossReclassifiedFromAccumulatedOCIIntoIncomeEffectivePortionNet us-gaap:DerivativeInstrumentRisk, us-gaap:HedgingDesignation, us-gaap:IncomeStatementLocation

us-gaap:DerivativeInstrumentsGainLossReclassifiedFromAccumulatedOCIIntoIncomeEffectivePortionNet

us-gaap:ForeignExchangeContract, us-gaap:DesignatedAsHedgingInstrument, us-gaap:CostOfSales


Derivative
Period End2021-06-30
Value10.0
Percentage of DerivativeInstrumentsGainLossReclassifiedFromAccumulatedOCIIntoIncomeEffectivePortionNet100.0

us-gaap:ForeignExchangeContract, us-gaap:DesignatedAsHedgingInstrument, us-gaap:Sales


Derivative
Period End2021-06-302020-06-30
Value4.0-3.0
Percentage of DerivativeInstrumentsGainLossReclassifiedFromAccumulatedOCIIntoIncomeEffectivePortionNet40.00.0

us-gaap:DerivativeInstrumentsGainLossReclassifiedFromAccumulatedOCIIntoIncomeEffectivePortionNet us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship, us-gaap:HedgingDesignation

us-gaap:CashFlowHedging, us-gaap:DesignatedAsHedgingInstrument


Derivative
Period End2020-09-302019-09-30
Value1.02.0
Percentage of DerivativeInstrumentsGainLossReclassifiedFromAccumulatedOCIIntoIncomeEffectivePortionNet0.00.0

us-gaap:DerivativeInstrumentsGainLossReclassifiedFromAccumulatedOCIIntoIncomeEffectivePortionNet us-gaap:HedgingDesignation

us-gaap:DesignatedAsHedgingInstrument


Derivative
Period End2021-06-302021-03-312020-06-302020-03-312019-06-302019-03-31
Value149.0-3.0-8.03.02.0
Percentage of DerivativeInstrumentsGainLossReclassifiedFromAccumulatedOCIIntoIncomeEffectivePortionNet140.00.00.00.00.00.0

us-gaap:DerivativeInstrumentsGainLossReclassifiedFromAccumulatedOCIIntoIncomeEffectivePortionNet us-gaap:HedgingDesignation, us-gaap:IncomeStatementLocation

us-gaap:DesignatedAsHedgingInstrument, us-gaap:CostOfSales


Derivative
Period End2021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-31
Value7.03.00.05.02.03.02.0
Percentage of DerivativeInstrumentsGainLossReclassifiedFromAccumulatedOCIIntoIncomeEffectivePortionNet0.00.00.00.00.00.00.0

us-gaap:DesignatedAsHedgingInstrument, us-gaap:OtherExpense


Derivative
Period End2020-09-302020-06-302020-03-31
Value0.00.0-14.0
Percentage of DerivativeInstrumentsGainLossReclassifiedFromAccumulatedOCIIntoIncomeEffectivePortionNet0.00.00.0

us-gaap:DesignatedAsHedgingInstrument, us-gaap:Sales


Derivative
Period End2021-03-312020-09-302020-06-302020-03-31
Value2.0-2.0-3.01.0
Percentage of DerivativeInstrumentsGainLossReclassifiedFromAccumulatedOCIIntoIncomeEffectivePortionNet0.00.00.00.0

us-gaap:DividendsCommonStockCash

us-gaap:DividendsCommonStockCash


Dividends
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value416187171171168156157158146146153
Percentage of DividendsCommonStockCash100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DividendsCommonStockCash us-gaap:StatementEquityComponents

us-gaap:Parent


Dividends
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value416187171171168156157158146146153
Percentage of DividendsCommonStockCash100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RetainedEarnings


Dividends
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value416187171171168156157158146146153
Percentage of DividendsCommonStockCash100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DividendsPreferredStockCash

us-gaap:DividendsPreferredStockCash


Dividends
Period End2021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value24242524242524242524
Percentage of DividendsPreferredStockCash100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DividendsPreferredStockCash us-gaap:StatementEquityComponents

us-gaap:Parent


Dividends
Period End2021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value24242524242524242524
Percentage of DividendsPreferredStockCash100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RetainedEarnings


Dividends
Period End2021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value24242524242524242524
Percentage of DividendsPreferredStockCash100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:EarlyRepaymentOfSeniorDebt us-gaap:DebtInstrument

us-gaap:EarlyRepaymentOfSeniorDebt

glw:DebenturesB


Early
Period End2020-12-31
Value100
Percentage of EarlyRepaymentOfSeniorDebt100.0

us-gaap:EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents

us-gaap:EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents


Effect
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value7.0-49.076396.0-24.016-25.0-11.06.011-14.0-58.062
Percentage of EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate

us-gaap:EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate


Effective
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-31
Value21.021.0021.00.210.2100.210.210.2100.210.210.2100.350.350.3500.350.350.3500.350.350.3500.350.350.3500.350.350.3500.350.350.3500.350.350.350.350.350.35
Percentage of EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate100.0100.00.0100.0100.0100.00.0100.0100.0100.00.0100.0100.0100.00.0100.0100.0100.00.0100.0100.0100.00.0100.0100.0100.00.0100.0100.0100.00.0100.0100.0100.00.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0

us-gaap:EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense

us-gaap:EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense


Employee
Period End2021-06-30
Value21
Percentage of EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense100.0

us-gaap:EquityMethodInvestmentRealizedGainLossOnDisposal us-gaap:BusinessAcquisition

us-gaap:EquityMethodInvestmentRealizedGainLossOnDisposal

glw:HSG


Equity
Period End2020-09-09
Value498
Percentage of EquityMethodInvestmentRealizedGainLossOnDisposal100.0

us-gaap:ExtinguishmentOfDebtAmount us-gaap:ExtinguishmentOfDebt

us-gaap:ExtinguishmentOfDebtAmount

glw:DebenturesDueIn2022


Extinguishment
Period End2021-06-30
Value375
Percentage of ExtinguishmentOfDebtAmount100.0

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInEarnings1 us-gaap:DerivativeInstrumentRisk

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInEarnings1

glw:RenewableEnergy


Fair
Period End2020-09-30
Value0.0
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInEarnings10.0

us-gaap:ForeignCurrencyTransactionGainLossBeforeTax us-gaap:ConsolidationItems

us-gaap:ForeignCurrencyTransactionGainLossBeforeTax

us-gaap:MaterialReconcilingItems


Foreign
Period End2021-06-302021-03-312020-06-302020-03-31
Value-3.027-27.0-33.0
Percentage of ForeignCurrencyTransactionGainLossBeforeTax100.0100.0100.0100.0

us-gaap:ForeignCurrencyTransactionGainLossUnrealized

us-gaap:ForeignCurrencyTransactionGainLossUnrealized


Foreign
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
Value8.0-59.0796522-33.054-53.0-26.0-8.0-3.0-14.0-101.063757012767-178.0531.012335-67.062-298.0-192.0-299.04416
Percentage of ForeignCurrencyTransactionGainLossUnrealized100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:GainLossOnDispositionOfAssets1

us-gaap:GainLossOnDispositionOfAssets1


Gain
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value-31000000.0-32000000.0-15000000.0-60000000.0-73000000.0-33000000.0
Percentage of GainLossOnDispositionOfAssets1100.0100.0100.0100.0100.0100.0

us-gaap:GainLossOnSaleOfBusiness us-gaap:ConsolidationItems

us-gaap:GainLossOnSaleOfBusiness

us-gaap:MaterialReconcilingItems


Gain
Period End2021-06-30
Value40
Percentage of GainLossOnSaleOfBusiness100.0

us-gaap:GainLossOnSalesOfAssetsAndAssetImpairmentCharges us-gaap:ConsolidationItems

us-gaap:GainLossOnSalesOfAssetsAndAssetImpairmentCharges

us-gaap:MaterialReconcilingItems


Gain
Period End2020-09-302020-06-302020-03-312019-09-302019-06-302019-03-31
Value-143000000.0-84000000.0-89000000.0-130000000.0-60000000.0-7000000.0
Percentage of GainLossOnSalesOfAssetsAndAssetImpairmentCharges100.0100.0100.0100.0100.0100.0

us-gaap:GainLossRelatedToLitigationSettlement

us-gaap:GainLossRelatedToLitigationSettlement


Gain
Period End2020-09-302019-09-30
Value-83.024
Percentage of GainLossRelatedToLitigationSettlement100.0100.0

us-gaap:GainLossRelatedToLitigationSettlement dei:LegalEntity, us-gaap:BusinessAcquisition

glw:HSG, glw:DupontsTrichlorosilane


Gain
Period End2020-09-09
Value-81.0
Percentage of GainLossRelatedToLitigationSettlement0.0

us-gaap:GainLossRelatedToLitigationSettlement dei:LegalEntity, us-gaap:LitigationCase

glw:HSG, glw:TcsSettlement


Gain
Period End2020-09-30
Value-200.0
Percentage of GainLossRelatedToLitigationSettlement241.0

us-gaap:GainLossRelatedToLitigationSettlement us-gaap:LitigationCase

glw:TcsSettlement


Gain
Period End2020-09-30
Value-81.0
Percentage of GainLossRelatedToLitigationSettlement97.6

us-gaap:GainLossRelatedToLitigationSettlement us-gaap:LitigationCase, us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName

glw:TCSSettlement, glw:HSG


Gain
Period End2021-06-302021-03-31
Value0.0-81.0
Percentage of GainLossRelatedToLitigationSettlement0.00.0

us-gaap:GainLossRelatedToLitigationSettlement us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName

glw:HSG


Gain
Period End2020-09-30
Value-81.0
Percentage of GainLossRelatedToLitigationSettlement97.6

us-gaap:GainOrLossOnSaleOfPreviouslyUnissuedStockBySubsidiary us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName

us-gaap:GainOrLossOnSaleOfPreviouslyUnissuedStockBySubsidiary

glw:AllOther


Gain
Period End2020-12-31
Value107
Percentage of GainOrLossOnSaleOfPreviouslyUnissuedStockBySubsidiary100.0

us-gaap:GoodwillForeignCurrencyTranslationGainLoss

us-gaap:GoodwillForeignCurrencyTranslationGainLoss


Goodwill
Period End2020-12-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value33-47.01.022-4.010.011178.0-24.06.0-5.019
Percentage of GoodwillForeignCurrencyTranslationGainLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:GoodwillForeignCurrencyTranslationGainLoss us-gaap:StatementBusinessSegments

glw:DisplayTechnologies


Goodwill
Period End2020-12-312018-12-312018-09-302017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value5.0-8.00.06.00.0-1.05.0-7.04.0-1.02.0
Percentage of GoodwillForeignCurrencyTranslationGainLoss15.217.00.060.00.0-5.962.529.266.720.010.5

glw:LifeSciences


Goodwill
Period End2020-12-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value1.0-14.01.09.0-4.03.05.0112.0-10.02.0-4.08.0
Percentage of GoodwillForeignCurrencyTranslationGainLoss3.029.8100.040.9100.030.045.564.725.041.733.380.042.1

glw:OpticalCommunications


Goodwill
Period End2020-12-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value11-20.01.04.02.0-2.05.03.0-1.0-2.0-1.02.06.0
Percentage of GoodwillForeignCurrencyTranslationGainLoss33.342.6100.018.2-50.0-20.045.517.6-12.58.3-16.7-40.031.6

us-gaap:ImpairmentOfIntangibleAssetsFinitelived us-gaap:Ownership

us-gaap:ImpairmentOfIntangibleAssetsFinitelived

glw:HSG


Impairment
Period End2020-12-31
Value0.0
Percentage of ImpairmentOfIntangibleAssetsFinitelived0.0

us-gaap:IncomeLossFromEquityMethodInvestments

us-gaap:IncomeLossFromEquityMethodInvestments


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value7.08.0-42.0-76.07914-64.0233325288323139213313780165194159104396294239562867013816617393240259218321324428398511504474469
Percentage of IncomeLossFromEquityMethodInvestments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncomeLossFromEquityMethodInvestments us-gaap:ConsolidationItems

us-gaap:MaterialReconcilingItems


Income
Period End2021-06-302020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value-1.0-44.0-79.08118-65.020282629031-30.03721429-31.079
Percentage of IncomeLossFromEquityMethodInvestments-14.3104.8103.9102.5128.6101.687.084.8104.0100.796.9-96.894.9100.593.5-83.898.8

us-gaap:IncomeLossFromEquityMethodInvestments us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName

glw:AffiliatedCompanies


Income
Period End2020-12-312020-09-302020-06-302019-12-312019-09-302019-06-30
Value-47.0-77.082-64.02135
Percentage of IncomeLossFromEquityMethodInvestments111.9101.3103.8100.091.3106.1

us-gaap:IncreaseDecreaseInAccountsPayableAndAccruedLiabilities

us-gaap:IncreaseDecreaseInAccountsPayableAndAccruedLiabilities


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value183-27.019696-28.0-207.0107294-66.0-299.026424016-162.0292194-87.0-230.0229129178-293.0148-103.0123-314.03364529-413.0255-37.0-129.0-112.02313.06.0-51.080-64.040-83.01847.075-74.0
Percentage of IncreaseDecreaseInAccountsPayableAndAccruedLiabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInContractWithCustomerLiability

us-gaap:IncreaseDecreaseInContractWithCustomerLiability


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-31
Value2893247-180.0324174
Percentage of IncreaseDecreaseInContractWithCustomerLiability100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInDeferredLiabilities

us-gaap:IncreaseDecreaseInDeferredLiabilities


Increase
Period End2020-09-092020-06-30
Value11640
Percentage of IncreaseDecreaseInDeferredLiabilities100.0100.0

us-gaap:IncreaseDecreaseInOtherCurrentAssets

us-gaap:IncreaseDecreaseInOtherCurrentAssets


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-31
Value127266.039-30.010.080566797-16.06.0-62.092639.04060-60.0-29.0-5.076-147.0104871333110.0-28.0-20.0-11.0-5.02.016117.047-29.07.01626-17.0
Percentage of IncreaseDecreaseInOtherCurrentAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:InvestmentIncomeInterest

us-gaap:InvestmentIncomeInterest


Investment
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value2.03.03.03.03.06.05.04.05.07.09.07.09.0131210.01112119.06.06.05.06.05.05.05.05.04.0123.01.02.02.04.03.03.04.04.06.05.04.03.03.02.03.0
Percentage of InvestmentIncomeInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:LossContingencyAccrualPayments us-gaap:LitigationCase

us-gaap:LossContingencyAccrualPayments

glw:DowCorningBreastImplantLitigation


Loss
Period End2020-09-30
Value0.0
Percentage of LossContingencyAccrualPayments0.0

us-gaap:MinorityInterestDecreaseFromRedemptions dei:LegalEntity, us-gaap:CounterpartyName

us-gaap:MinorityInterestDecreaseFromRedemptions

glw:HSG, glw:DupontDeNemoursInc


Minority
Period End2020-09-09
Value250
Percentage of MinorityInterestDecreaseFromRedemptions100.0

us-gaap:NonoperatingGainsLosses

us-gaap:NonoperatingGainsLosses


Nonoperating
Period End2020-12-312020-09-302016-09-302016-06-302015-09-302015-06-30
Value0.0498-237.0-1201.0-149.0162
Percentage of NonoperatingGainsLosses0.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPortionAttributableToParent

us-gaap:OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPortionAttributableToParent


Other
Period End2021-06-302020-06-30
Value1.012
Percentage of OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPortionAttributableToParent100.0100.0

us-gaap:OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax us-gaap:StatementEquityComponents

us-gaap:OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax

us-gaap:AccumulatedNetGainLossFromDesignatedOrQualifyingCashFlowHedges


Other
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312017-06-302016-12-312016-09-302016-06-302013-12-312013-09-302013-06-302012-12-312012-09-302012-06-30
Value261117-67.070-21.0-2.07.0-1.043-31.0-29.00.00.03235-2.0-5.0
Percentage of OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.0100.0100.0100.0100.0

us-gaap:AccumulatedTranslationAdjustment


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302012-12-312012-09-302012-06-30
Value39-355.043627455-253.0164-235.039-98.0101-128.0-413.026027649-49.0434-949.0235240385-88.0-163.0-62.0-174.0-508.0-600.026225-279.076-224.0-402.010670
Percentage of OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax0.00.01676.92490.9323.5377.6234.31119.0-1950.0-1400.00.00.00.00.00.00.04900.00.0-2207.0-758.1-827.60.00.00.00.00.00.00.00.00.00.00.0-700.0-1148.6-5300.0-1400.0

us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeReclassificationForDiscontinuanceBeforeTax

us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeReclassificationForDiscontinuanceBeforeTax


Other
Period End2021-03-312020-06-302020-03-31
Value140.014
Percentage of OtherComprehensiveIncomeLossCashFlowHedgeReclassificationForDiscontinuanceBeforeTax100.00.0100.0

us-gaap:OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent

us-gaap:OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value40-352.039429865-326.0216-257.036-156.0126-101.0-458.026530455-5.0480-961.0251438407-8.0-212.0-35.0-249.0-818.0-674.0255-114.0119313-256.0-488.0-2496.0440996928-2553.01473726798
Percentage of OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent us-gaap:StatementEquityComponents

us-gaap:AccumulatedNetGainLossFromDesignatedOrQualifyingCashFlowHedges


Other
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value221119-61.065-22.0-2.05.0
Percentage of OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent5.63.729.218.730.18.6-5.6-3.2

us-gaap:AccumulatedTranslationAdjustment


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value40-363.045228358-265.0167-238.038-110.0107-128.0-428.026428953-46.0450
Percentage of OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent100.0103.1114.795.089.281.377.392.6105.670.584.9126.793.499.695.196.4920.093.8

us-gaap:OtherComprehensiveIncomeLossTax us-gaap:StatementEquityComponents

us-gaap:OtherComprehensiveIncomeLossTax

us-gaap:AccumulatedNetGainLossFromDesignatedOrQualifyingCashFlowHedges


Other
Period End2020-09-302020-06-302020-03-31
Value5.05.022
Percentage of OtherComprehensiveIncomeLossTax100.0100.0100.0

us-gaap:AccumulatedTranslationAdjustment


Other
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value-1.010.0211829-32.01610.0136.0-2.04010.0416.0-16.057
Percentage of OtherComprehensiveIncomeLossTax0.00.0420.0360.0131.80.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodBeforeTax us-gaap:DerivativeInstrumentRisk, us-gaap:HedgingDesignation

us-gaap:OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodBeforeTax

us-gaap:ForeignExchangeContract, us-gaap:DesignatedAsHedgingInstrument


Other
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-30
Value15261622-89.0-26.0
Percentage of OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodBeforeTax100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodBeforeTax us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship, us-gaap:HedgingDesignation

us-gaap:CashFlowHedging, us-gaap:DesignatedAsHedgingInstrument


Other
Period End2020-09-302020-06-302020-03-312019-09-302019-06-302019-03-31
Value1622-89.0-26.0-3.09.0
Percentage of OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodBeforeTax100.0100.0100.0100.00.00.0

us-gaap:OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodBeforeTax us-gaap:HedgingDesignation

us-gaap:DesignatedAsHedgingInstrument


Other
Period End2021-06-302021-03-312020-06-302020-03-31
Value152622-89.0
Percentage of OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodBeforeTax100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax

us-gaap:OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value1.011221119-61.065-22.0-3.05.0-5.027-23.02.04.012263111-22.0-19.0-4.0-37.00.05.02.05.01.0-4.0-32.0-17.01411-10.0-4.00.08.01.0-16.0-11.02.0
Percentage of OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0

us-gaap:OtherRestructuringCosts

us-gaap:OtherRestructuringCosts


Other
Period End2020-12-312020-09-302020-06-302019-12-312019-09-302019-06-302010-12-31
Value2847243523-1.0-324.0
Percentage of OtherRestructuringCosts100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherRestructuringCosts us-gaap:IncomeStatementLocation

glw:GrossMargin


Other
Period End2020-12-312020-09-302020-06-302019-12-312019-09-302019-06-30
Value112614131433
Percentage of OtherRestructuringCosts39.355.358.337.160.9-3300.0

glw:ResearchDevelopmentAndEngineeringExpenses


Other
Period End2020-12-312020-09-302020-06-30
Value3.01.01.0
Percentage of OtherRestructuringCosts10.72.14.2

us-gaap:OtherOperatingIncomeExpense


Other
Period End2020-12-312020-09-302020-06-302019-12-312019-09-302019-06-30
Value5.08.05.0164.0-34.0
Percentage of OtherRestructuringCosts17.917.020.845.717.43400.0

us-gaap:SellingGeneralAndAdministrativeExpenses


Other
Period End2020-12-312020-09-302020-06-302019-12-312019-09-30
Value9.0124.03.05.0
Percentage of OtherRestructuringCosts32.125.516.78.621.7

us-gaap:PaymentsForCapitalImprovements

us-gaap:PaymentsForCapitalImprovements


Payments
Period End2021-06-302021-03-312020-06-302020-03-31
Value324289288545
Percentage of PaymentsForCapitalImprovements100.0100.0100.0100.0

us-gaap:PaymentsForProceedsFromDerivativeInstrumentInvestingActivities

us-gaap:PaymentsForProceedsFromDerivativeInstrumentInvestingActivities


Payments
Period End2021-06-302021-03-312020-06-302020-03-31
Value-16000000.03000000.0-1000000.0-11000000.0
Percentage of PaymentsForProceedsFromDerivativeInstrumentInvestingActivities100.0100.0100.0100.0

us-gaap:PaymentsForProceedsFromOtherInvestingActivities

us-gaap:PaymentsForProceedsFromOtherInvestingActivities


Payments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302015-12-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value-1.0203.0-7.0-15.05.0134610.0-21.01112142.020156.07.0-1.0-6.00.01.0-1.02.0-6.0-4.013-17.0-1.0-2.0-2.0-9.05.05.0-2.0-2.0-1.0-4.00.0-2.0
Percentage of PaymentsForProceedsFromOtherInvestingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0

us-gaap:PaymentsOfDebtExtinguishmentCosts us-gaap:DebtInstrument

us-gaap:PaymentsOfDebtExtinguishmentCosts

glw:DebenturesB


Payments
Period End2020-12-31
Value21
Percentage of PaymentsOfDebtExtinguishmentCosts100.0

us-gaap:PaymentsOfDebtExtinguishmentCosts us-gaap:ExtinguishmentOfDebt

glw:DebenturesDueIn2022


Payments
Period End2021-06-30
Value10.0
Percentage of PaymentsOfDebtExtinguishmentCosts0.0

us-gaap:PaymentsOfOrdinaryDividends

us-gaap:PaymentsOfOrdinaryDividends


Payments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-30
Value234208200204191192188192181181168169171177158160165168152153167173160169173177152152151136140146
Percentage of PaymentsOfOrdinaryDividends100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PreferredStockRedemptionPremium

us-gaap:PreferredStockRedemptionPremium


Preferred
Period End2021-06-30
Value803
Percentage of PreferredStockRedemptionPremium100.0

us-gaap:PreferredStockRedemptionPremium us-gaap:CounterpartyName, us-gaap:ShareRepurchaseProgram

glw:Samsung, glw:ShareRepurchaseAgreement


Preferred
Period End2021-04-08
Value803
Percentage of PreferredStockRedemptionPremium0.0

us-gaap:ProceedsFromDepositsFromCustomers

us-gaap:ProceedsFromDepositsFromCustomers


Proceeds
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value1021237590.01251400.00.02.09.0115300276
Percentage of ProceedsFromDepositsFromCustomers100.0100.0100.0100.00.0100.0100.00.00.0100.0100.0100.0100.0100.0

us-gaap:ProceedsFromDerivativeInstrumentInvestingActivities

us-gaap:ProceedsFromDerivativeInstrumentInvestingActivities


Proceeds
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-30
Value2.0-2.01.011161.029204626231371506980551.052931641681721491357463895430
Percentage of ProceedsFromDerivativeInstrumentInvestingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProceedsFromDivestitureOfBusinessesNetOfCashDivested

us-gaap:ProceedsFromDivestitureOfBusinessesNetOfCashDivested


Proceeds
Period End2021-06-302021-03-31
Value7824
Percentage of ProceedsFromDivestitureOfBusinessesNetOfCashDivested100.0100.0

us-gaap:ProceedsFromIssuanceOfUnsecuredDebt

us-gaap:ProceedsFromIssuanceOfUnsecuredDebt


Proceeds
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302018-12-312018-06-302017-12-312017-09-302016-12-312015-12-312015-09-30
Value313.09.020015003495968895967437000.00.00.0
Percentage of ProceedsFromIssuanceOfUnsecuredDebt100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.0

us-gaap:ProceedsFromPaymentsForOtherFinancingActivities

us-gaap:ProceedsFromPaymentsForOtherFinancingActivities


Proceeds
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value2.0-8.01.022-9.03.09.0123.0228.0-3.0-8.0-3.0
Percentage of ProceedsFromPaymentsForOtherFinancingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProceedsFromRepaymentsOfDebt us-gaap:CreditFacility

us-gaap:ProceedsFromRepaymentsOfDebt

us-gaap:RevolvingCreditFacility


Proceeds
Period End2020-09-302020-06-302020-03-31
Value25641402
Percentage of ProceedsFromRepaymentsOfDebt100.0100.0100.0

us-gaap:ProceedsFromRepaymentsOfDebt us-gaap:DebtInstrument

glw:DebenturesB


Proceeds
Period End2020-12-31
Value121
Percentage of ProceedsFromRepaymentsOfDebt0.0

us-gaap:ProceedsFromSaleOfEquitySecuritiesFvNi

us-gaap:ProceedsFromSaleOfEquitySecuritiesFvNi


Proceeds
Period End2021-06-30
Value84
Percentage of ProceedsFromSaleOfEquitySecuritiesFvNi100.0

us-gaap:ProceedsFromSaleOfProductiveAssets

us-gaap:ProceedsFromSaleOfProductiveAssets


Proceeds
Period End2020-09-30
Value0.0
Percentage of ProceedsFromSaleOfProductiveAssets0.0

us-gaap:ProceedsFromStockOptionsExercised

us-gaap:ProceedsFromStockOptionsExercised


Proceeds
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value315175366.07.0157.013237.03122213423701825259189.03.01.09.0891814345031152712127.03.0168.09.09.0641610.08.021
Percentage of ProceedsFromStockOptionsExercised100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax us-gaap:StatementEquityComponents

us-gaap:ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax

us-gaap:AccumulatedNetGainLossFromDesignatedOrQualifyingCashFlowHedges


Reclassification
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312017-12-312017-09-302017-06-302016-12-312016-09-302016-06-302013-12-312013-09-302013-06-302012-12-312012-09-302012-06-30
Value4.0-1.0-2.0-6.05.01.02.02.06.00.0-17.038-26.0-29.0-130.01718-28.02.04.0
Percentage of ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RepaymentsOfShortTermDebt

us-gaap:RepaymentsOfShortTermDebt


Repayments
Period End2021-06-302021-03-31
Value43525
Percentage of RepaymentsOfShortTermDebt100.0100.0

us-gaap:RepaymentsOfShortTermDebt dei:LegalEntity

glw:HSG


Repayments
Period End2020-12-31
Value100
Percentage of RepaymentsOfShortTermDebt0.0

us-gaap:RepaymentsOfShortTermDebt us-gaap:CreditFacility

glw:VariableRateLoanFacility


Repayments
Period End2020-12-31
Value100
Percentage of RepaymentsOfShortTermDebt0.0

us-gaap:RestructuringCharges

us-gaap:RestructuringCharges


Restructuring
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302016-09-302016-06-302016-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-30
Value94171337225217148670.00.016120.0343.0420.0
Percentage of RestructuringCharges100.0100.0100.0100.0100.0100.0100.00.00.0100.0100.00.0100.0100.0100.00.0

us-gaap:RestructuringCharges us-gaap:IncomeStatementLocation

glw:GrossMargin


Restructuring
Period End2020-12-312020-09-302020-06-302019-12-312019-09-302019-06-30
Value601249817611795
Percentage of RestructuringCharges63.872.529.181.179.1141.8

glw:ResearchDevelopmentAndEngineeringExpenses


Restructuring
Period End2020-12-312020-09-302020-06-302019-12-312019-09-30
Value4.0182121416
Percentage of RestructuringCharges4.310.562.96.510.8

us-gaap:OtherOperatingIncomeExpense


Restructuring
Period End2020-12-312020-09-302020-06-302019-12-312019-09-302019-06-30
Value5.08.05.0164.0-34.0
Percentage of RestructuringCharges5.34.71.57.42.7-50.7

us-gaap:SellingGeneralAndAdministrativeExpenses


Restructuring
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-30
Value2521224811116.0
Percentage of RestructuringCharges26.612.36.521.35.17.49.0

us-gaap:RevenueFromRelatedParties us-gaap:ConsolidationItems, us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName

us-gaap:RevenueFromRelatedParties

us-gaap:IntersegmentElimination, glw:HSG


Revenue
Period End2020-09-302020-06-302019-09-302019-06-30
Value12203133
Percentage of RevenueFromRelatedParties100.0100.0100.0100.0

us-gaap:SeveranceCosts1

us-gaap:SeveranceCosts1


Severance
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-30
Value7.06.0587738187.0
Percentage of SeveranceCosts1100.0100.0100.0100.0100.0100.0100.0

us-gaap:SeveranceCosts1 us-gaap:ConsolidationItems

us-gaap:MaterialReconcilingItems


Severance
Period End2021-06-302020-09-302020-06-302020-03-312019-09-302019-06-30
Value1.06.05877187.0
Percentage of SeveranceCosts10.0100.0100.0100.0100.0100.0

us-gaap:SeveranceCosts1 us-gaap:IncomeStatementLocation

glw:GrossMargin


Severance
Period End2020-12-312020-09-302020-06-302019-12-312019-09-302019-06-30
Value4.03.024209.01.0
Percentage of SeveranceCosts157.150.041.452.650.014.3

glw:ResearchDevelopmentAndEngineeringExpenses


Severance
Period End2020-12-312020-09-302020-06-302019-12-312019-09-30
Value3.00.01610.03.0
Percentage of SeveranceCosts142.90.027.626.316.7

us-gaap:SellingGeneralAndAdministrativeExpenses


Severance
Period End2020-12-312020-09-302020-06-302019-12-312019-09-302019-06-30
Value0.03.0188.06.06.0
Percentage of SeveranceCosts10.050.031.021.133.385.7

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod

glw:RestrictedStockAndRestrictedStockUnits


Share
Period End2021-06-302021-03-31
Value105000.0216000.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod100.0100.0

glw:TimebasedRestrictedStockAndRestrictedStockUnits


Share
Period End2020-12-31
Value46000.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod0.0

us-gaap:PerformanceShares


Share
Period End2021-06-302021-03-31
Value13000.043000.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod12.419.9

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue us-gaap:AwardType