IBM


Line plots across dimensions of each concept
Tables

Table of contents



us-gaap:CommonStockSharesIssued

us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding

us-gaap:WeightedAverageNumberOfSharesOutstandingBasic

us-gaap:EarningsPerShareBasic

us-gaap:EarningsPerShareDiluted

us-gaap:IncomeLossFromContinuingOperationsPerBasicShare

us-gaap:IncomeLossFromContinuingOperationsPerDilutedShare

us-gaap:Revenues
us-gaap:ConsolidationItems
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments
us-gaap:ProductOrService
us-gaap:StatementGeographical
us-gaap:ConsolidationItems
us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax
us-gaap:ConsolidationItems, us-gaap:ProductOrService, us-gaap:StatementBusinessSegments
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:CostOfRevenue
us-gaap:ProductOrService
us-gaap:ProductOrService, us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:StatementEquityComponents

us-gaap:GrossProfit

us-gaap:ResearchAndDevelopmentExpense

us-gaap:SellingGeneralAndAdministrativeExpense
us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:StatementEquityComponents

us-gaap:InterestExpense
us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:StatementEquityComponents
us-gaap:IncomeStatementLocation
us-gaap:InterestExpenseDebt

us-gaap:IncomeLossFromContinuingOperations

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest
us-gaap:ConsolidationItems
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:IncomeTaxExpenseBenefit
us-gaap:IncomeStatementLocation, us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:StatementEquityComponents

us-gaap:ProfitLoss
us-gaap:StatementEquityComponents

us-gaap:ComprehensiveIncomeNetOfTax

us-gaap:ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest
us-gaap:StatementEquityComponents

us-gaap:NetIncomeLoss
us-gaap:IncomeStatementLocation, us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:StatementEquityComponents

us-gaap:NetIncomeLossAvailableToCommonStockholdersBasic

us-gaap:NetIncomeLossAvailableToCommonStockholdersDiluted
us-gaap:IncomeStatementLocation
us-gaap:NetIncomeLossAttributableToNoncontrollingInterest

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

us-gaap:Liabilities

us-gaap:LiabilitiesAndStockholdersEquity

us-gaap:StockholdersEquity

us-gaap:AssetsCurrent

us-gaap:CashAndCashEquivalentsAtCarryingValue

us-gaap:AccountsReceivableNetCurrent

us-gaap:InventoryNet

us-gaap:PrepaidExpenseAndOtherAssetsCurrent

us-gaap:PropertyPlantAndEquipmentGross
us-gaap:PropertyPlantAndEquipmentByType

us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment
us-gaap:PropertyPlantAndEquipmentByType

us-gaap:PropertyPlantAndEquipmentNet
us-gaap:ConsolidationItems
us-gaap:PropertyPlantAndEquipmentByType
us-gaap:StatementGeographical, us-gaap:ConcentrationRiskByBenchmark, us-gaap:ConcentrationRiskByType, us-gaap:PropertyPlantAndEquipmentByType

us-gaap:Goodwill
us-gaap:BusinessAcquisition
us-gaap:BusinessAcquisition, us-gaap:StatementBusinessSegments
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:FiniteLivedIntangibleAssetsNet
us-gaap:FiniteLivedIntangibleAssetsByMajorClass

us-gaap:LiabilitiesCurrent

us-gaap:AccountsPayableCurrent

us-gaap:TaxesPayableCurrent
us-gaap:DebtInstrument, us-gaap:SubsequentEventType
us-gaap:LongTermDebt

us-gaap:LongTermDebtNoncurrent

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

us-gaap:MinorityInterest

us-gaap:OtherLiabilitiesNoncurrent

us-gaap:StockholdersEquity

us-gaap:RetainedEarningsAccumulatedDeficit
us-gaap:Restatement, us-gaap:AdjustmentsForNewAccountingPronouncements
us-gaap:Restatement, us-gaap:AdjustmentsForNewAccountingPronouncements, us-gaap:SubsequentEventType

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetIncomeLoss
us-gaap:IncomeStatementLocation, us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:StatementEquityComponents

us-gaap:ProfitLoss
us-gaap:StatementEquityComponents

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:PaymentsToAcquirePropertyPlantAndEquipment

us-gaap:PaymentsToAcquireInvestments

us-gaap:NetCashProvidedByUsedInFinancingActivities
us-gaap:Currency, us-gaap:Range, us-gaap:DebtInstrument, us-gaap:SubsequentEventType
us-gaap:DebtInstrumentInterestRateStatedPercentage

us-gaap:ShareBasedCompensation

us-gaap:DeferredTaxAssetsNet

us-gaap:UnrecognizedTaxBenefits

us-gaap:DeferredTaxAssetsValuationAllowance

us-gaap:OperatingLeaseRightOfUseAsset
us-gaap:ConsolidationItems
us-gaap:StatementGeographical, us-gaap:ConcentrationRiskByBenchmark, us-gaap:ConcentrationRiskByType

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents

ibm:AcquisitionRelatedCharges

ibm:AmortizationAcquiredIntangibleAssets

ibm:AmortizationOfIntangibleAssetsNetOfCurrencyImpact

ibm:ChangeInPretaxStockBasedCompensation
us-gaap:AwardType
us-gaap:ProductOrService
ibm:ContractWithCustomerLiabilityAdditions
us-gaap:ProductOrService
ibm:ContractWithCustomerLiabilityOther
us-gaap:RetirementPlanType
ibm:DefinedBenefitPlanContributionsByEmployerNoncash

ibm:ExpenseAndOtherIncome
us-gaap:FinancingReceivablePortfolioSegment
ibm:FinancingReceivableNumberOfClassesOfFinancingReceivable

ibm:GainLossOnDispositionOfAssetsAndOther

ibm:IntellectualPropertyAndCustomDevelopmentIncome
us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType
ibm:MultiEmployerDefinedBenefitPlanCosts

ibm:NonOperatingFinanceReceivablesNet

ibm:NonoperatingRetirementRelatedCosts

ibm:OtherIncomeAndExpense
us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:StatementEquityComponents

ibm:PaymentsToAcquireAndDevelopSoftware

ibm:PurchasesSalesTreasuryStockUnderEmployeePlansNet
us-gaap:StatementEquityComponents
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments
ibm:RevenueFinancialServices
us-gaap:ConsolidationItems
ibm:RevenuesExcludingDisposalGroups

ibm:SalesTreasuryStockUnderEmployeePlansShares

ibm:SalesTypeAndDirectFinancingLeasesLeaseIncome
us-gaap:ConsolidationItems
ibm:SegmentReportingInformationPretaxIncomeChangePercent
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments
us-gaap:ConsolidationItems
ibm:SegmentReportingInformationPretaxIncomeMargin
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments
us-gaap:ConsolidationItems
ibm:SegmentReportingInformationRevenueChangePercent
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:AllocatedShareBasedCompensationExpense
us-gaap:IncomeStatementLocation

us-gaap:AllocatedShareBasedCompensationExpenseNetOfTax
us-gaap:FinancingReceivablePortfolioSegment
us-gaap:AllowanceForLoanAndLeaseLossesAdjustmentsNet
us-gaap:StatementGeographical, us-gaap:FinancingReceivablePortfolioSegment

us-gaap:AmortizationOfIntangibleAssets
us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecurities
us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect
us-gaap:DerivativeInstrumentRisk, us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship
us-gaap:CashFlowHedgeGainLossToBeReclassifiedWithinTwelveMonths

us-gaap:ChangeInUnrealizedGainLossOnHedgedItemInFairValueHedge1
us-gaap:DerivativeInstrumentRisk, us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship, us-gaap:IncomeStatementLocation

us-gaap:CommonStockDividendsPerShareCashPaid

us-gaap:ContractWithCustomerLiabilityRevenueRecognized
us-gaap:ProductOrService

us-gaap:CostOfGoodsSoldSalesTypeLease
us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanAmortizationOfGainsLosses
us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanAmortizationOfPriorServiceCostCredit

us-gaap:DefinedBenefitPlanContributionsByEmployer
us-gaap:RetirementPlanSponsorLocation
us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanExpectedReturnOnPlanAssets
us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanInterestCost
us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanNetPeriodicBenefitCost
us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanOtherCosts
us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanRecognizedNetGainLossDueToSettlementsAndCurtailments1
us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanServiceCost
us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType
us-gaap:DefinedContributionPlanCostRecognized

us-gaap:Depreciation
us-gaap:DerivativeInstrumentRisk, us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship, us-gaap:IncomeStatementLocation
us-gaap:DerivativeExcludedComponentGainLossRecognizedInEarnings
us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship

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

us-gaap:DisposalGroupIncludingDiscontinuedOperationOperatingIncomeLoss
us-gaap:ConsolidationItems
us-gaap:DisposalGroupIncludingDiscontinuedOperationRevenue
us-gaap:IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperations
us-gaap:DisposalGroupNotDiscontinuedOperationGainLossOnDisposal

us-gaap:DividendsCommonStockCash
us-gaap:StatementEquityComponents

us-gaap:EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents

us-gaap:EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense
us-gaap:FinancingReceivablePortfolioSegment
us-gaap:FinancingReceivableAllowanceForCreditLossesRecovery
us-gaap:StatementGeographical, us-gaap:FinancingReceivablePortfolioSegment
us-gaap:FinancingReceivablePortfolioSegment
us-gaap:FinancingReceivableAllowanceForCreditLossesWriteOffs
us-gaap:StatementGeographical, us-gaap:FinancingReceivablePortfolioSegment

us-gaap:FiniteLivedIntangibleAssetsForeignCurrencyTranslationGainLoss
us-gaap:IncomeStatementLocation
us-gaap:GainLossOnDerivativeInstrumentsNetPretax

us-gaap:GoodwillAcquiredDuringPeriod
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:GoodwillForeignCurrencyTranslationGainLoss
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:GoodwillPurchaseAccountingAdjustments
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity

us-gaap:IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare

us-gaap:IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare
us-gaap:DerivativeInstrumentRisk, us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship
us-gaap:IncreaseDecreaseInDerivativeLiabilities

us-gaap:IncreaseDecreaseInOperatingCapital

us-gaap:IncrementalCommonSharesAttributableToContingentlyIssuableShares

us-gaap:IncrementalCommonSharesAttributableToShareBasedPaymentArrangements

us-gaap:InterestCostsCapitalized

us-gaap:InterestCostsIncurred

us-gaap:LeaseIncome

us-gaap:MinorityInterestPeriodIncreaseDecrease
us-gaap:StatementEquityComponents

us-gaap:NetIncomeLossFromContinuingOperationsAvailableToCommonShareholdersBasic

us-gaap:NetIncomeLossFromContinuingOperationsAvailableToCommonShareholdersDiluted

us-gaap:NetIncomeLossFromDiscontinuedOperationsAvailableToCommonShareholdersBasic

us-gaap:NetIncomeLossFromDiscontinuedOperationsAvailableToCommonShareholdersDiluted
us-gaap:DerivativeInstrumentRisk, us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship
us-gaap:OciBeforeReclassificationsBeforeTaxAttributableToParent
us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship

us-gaap:OperatingLeaseLeaseIncome

us-gaap:OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentBeforeTaxPortionAttributableToParent

us-gaap:OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentBeforeTaxPortionAttributableToParent

us-gaap:OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentBeforeTaxPortionAttributableToParent

us-gaap:OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditBeforeTax
us-gaap:StatementEquityComponents
us-gaap:OtherComprehensiveIncomeLossBeforeReclassificationsBeforeTax
us-gaap:StatementEquityComponents
us-gaap:OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax
us-gaap:StatementEquityComponents
us-gaap:OtherComprehensiveIncomeLossBeforeReclassificationsTax
us-gaap:StatementEquityComponents
us-gaap:OtherComprehensiveIncomeLossBeforeTax

us-gaap:OtherComprehensiveIncomeLossBeforeTaxPortionAttributableToParent

us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationBeforeTaxParent

us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAndTax

us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationBeforeTax

us-gaap:OtherComprehensiveIncomeLossFinalizationOfPensionAndNonPensionPostretirementPlanValuationBeforeTax

us-gaap:OtherComprehensiveIncomeLossNetOfTax
us-gaap:StatementEquityComponents

us-gaap:OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent

us-gaap:OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansNetUnamortizedGainLossArisingDuringPeriodBeforeTax

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossBeforeTax
us-gaap:StatementEquityComponents
us-gaap:OtherComprehensiveIncomeLossTax

us-gaap:OtherComprehensiveIncomeLossTaxPortionAttributableToParent1

us-gaap:OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax

us-gaap:OtherPostretirementBenefitExpense

us-gaap:PaymentsOfDividendsCommonStock

us-gaap:PaymentsRelatedToTaxWithholdingForShareBasedCompensation

us-gaap:PaymentsToAcquireBusinessesNetOfCashAcquired

us-gaap:PensionAndOtherPostretirementBenefitExpense

us-gaap:PensionExpense
us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType
us-gaap:IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperations
us-gaap:ProceedsFromDivestitureOfBusinesses

us-gaap:ProceedsFromDivestitureOfBusinessesNetOfCashDivested

us-gaap:ProceedsFromIssuanceOfLongTermDebtAndCapitalSecuritiesNet

us-gaap:ProceedsFromPaymentsForOtherFinancingActivities

us-gaap:ProceedsFromRepaymentsOfShortTermDebtMaturingInThreeMonthsOrLess

us-gaap:ProceedsFromSaleMaturityAndCollectionsOfInvestments

us-gaap:ProceedsFromSaleOfPropertyPlantAndEquipment
us-gaap:FinancingReceivablePortfolioSegment
us-gaap:ProvisionForLoanAndLeaseLosses
us-gaap:StatementGeographical, us-gaap:FinancingReceivablePortfolioSegment
us-gaap:StatementEquityComponents
us-gaap:ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodBeforeTax
us-gaap:StatementEquityComponents
us-gaap:ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax
us-gaap:DerivativeInstrumentRisk, us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship, us-gaap:IncomeStatementLocation
us-gaap:ReclassificationFromAociCurrentPeriodBeforeTaxAttributableToParent
us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship
us-gaap:StatementEquityComponents
us-gaap:ReclassificationFromAociCurrentPeriodTax

us-gaap:RepaymentsOfLongTermDebtAndCapitalSecurities

us-gaap:SalesTypeAndDirectFinancingLeasesInterestIncome

us-gaap:SalesTypeLeaseRevenue

us-gaap:SalesTypeLeaseSellingProfitLoss

us-gaap:SharesPaidForTaxWithholdingForShareBasedCompensation

us-gaap:StandardProductWarrantyAccrualPayments

us-gaap:StandardProductWarrantyAccrualPreexistingIncreaseDecrease

us-gaap:StandardProductWarrantyAccrualWarrantiesIssued

us-gaap:StockIssuedDuringPeriodSharesShareBasedCompensation

us-gaap:StockIssuedDuringPeriodValueShareBasedCompensation
us-gaap:StatementEquityComponents

us-gaap:VariableLeaseIncome

ibm:AccrualForWorkforceReductions

ibm:AccruedLiabilitiesAndOtherLiabilitiesCurrent
us-gaap:ConsolidationItems
ibm:CapitalExpenditureAndInvestmentsInIntangibles
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

ibm:CapitalLeasesGuaranteedResidualValuesOfLeasedProperty
us-gaap:FinancingReceivablePortfolioSegment

ibm:CapitalLeasesUnguaranteedResidualValuesOfLeasedProperty
us-gaap:FinancingReceivablePortfolioSegment

ibm:CashCollateralRehypothecated

ibm:DebtInstrumentCarryingAmountExcludingFinanceLeaseObligations
us-gaap:Currency

ibm:DeferredTaxAssetsLeases

ibm:DeferredTaxAssetsOperatingLossCarryforwardsAndTaxCreditCarryforwardsDomestic

ibm:DeferredTaxAssetsOperatingLossCarryforwardsAndTaxCreditCarryforwardsForeign

ibm:DeferredTaxLiabilitiesDeferredExpenseTransitionCosts

ibm:DeferredTaxLiabilitiesGILTIDeferredTaxes

ibm:DeferredTaxLiabilitiesTaxDeferredExpenseCompensationAndBenefitsPensionAndPostretirementBenefits

ibm:DefinedBenefitAllPlanChangeInDiscountRateBenefitObligationPeriodIncreaseDecrease
us-gaap:RetirementPlanName, us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanTaxStatus, us-gaap:RetirementPlanType
ibm:DefinedBenefitPlanFairValueOfNetUnsettledTransactionsOnPurchasesAndSalesOfPlanAssets
us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanByPlanAssetCategories, us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:RetirementPlanName, us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanTaxStatus, us-gaap:RetirementPlanType
ibm:DefinedBenefitPlanFairValueOfPlanAssetsGross
us-gaap:DefinedBenefitPlanByPlanAssetCategories, us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanByPlanAssetCategories, us-gaap:RetirementPlanName, us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanTaxStatus, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanByPlanAssetCategories, us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:RetirementPlanName, us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanTaxStatus, us-gaap:RetirementPlanType
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType
us-gaap:RetirementPlanName, us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanTaxStatus, us-gaap:RetirementPlanType
us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType
us-gaap:RetirementPlanName, us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanTaxStatus, us-gaap:RetirementPlanType
ibm:DefinedBenefitPlanInvestmentsMeasuredAtNetAssetValue
us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType
us-gaap:RetirementPlanType
ibm:DefinedBenefitPlanPlansWithPlanAssetsInExcessOfBenefitObligationAggregateBenefitObligation
us-gaap:RetirementPlanType
ibm:DefinedBenefitPlanPlansWithPlanAssetsInExcessOfBenefitObligationAggregateFairValueOfPlanAssets
us-gaap:RetirementPlanType
ibm:DefinedBenefitPlanWithAccumulatedPostretirementBenefitObligationInExcessOfPlanAssetsAccumulatedBenefitObligation
us-gaap:RetirementPlanType
ibm:DefinedBenefitPlanWithAccumulatedPostretirementBenefitObligationInExcessOfPlanAssetsPlanAssets

ibm:DefinedContributionPensionPlanLiabilitiesNoncurrent
us-gaap:IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperations
ibm:DisposalGroupIncludingDiscontinuedOperationConsiderationExpectedToReceive

ibm:DivestitureRelatedActivitiesNoncurrent
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivablesPeriodPastDue
ibm:FinancingReceivableBilledInvoices90DaysPastDueAndStillAccruing
us-gaap:StatementGeographical, us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivablesPeriodPastDue

ibm:FinancingReceivableGuaranteedAndUnguaranteedResidualAsset
us-gaap:FinancingReceivablePortfolioSegment
us-gaap:CreditRatingMoodys, us-gaap:StatementGeographical, us-gaap:FinancingReceivablePortfolioSegment
ibm:FinancingReceivablesNetExcludingResidualValue
us-gaap:StatementGeographical, us-gaap:FinancingReceivablePortfolioSegment

ibm:OtherEmployeeBenefitRelatedNoncurrentAssets

ibm:OtherReceivablesNoncurrent

ibm:OtherTaxesPayable

ibm:RevenueRemainingPerformanceObligationExpectedTimingPercentage

ibm:TransferOfFinancialAssetsAccountedForAsSalesAmountRemainingUncollected

ibm:WorkforceReductionsNoncurrent
us-gaap:Restatement, us-gaap:AdjustmentsForNewAccountingPronouncements, us-gaap:BalanceSheetLocation, us-gaap:SubsequentEventType
us-gaap:AccountsAndFinancingReceivableAllowanceForCreditLoss
us-gaap:ConsolidationItems
us-gaap:AccountsAndNotesReceivableNet

us-gaap:AccrualForEnvironmentalLossContingencies

us-gaap:AccruedEnvironmentalLossContingenciesNoncurrent

us-gaap:AllowanceForDoubtfulAccountsReceivableCurrent

us-gaap:AllowanceForDoubtfulOtherReceivablesCurrent

us-gaap:AllowanceForNotesAndLoansReceivableCurrent

us-gaap:AllowanceForNotesAndLoansReceivableNoncurrent
us-gaap:DerivativeInstrumentRisk, us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship
us-gaap:AociBeforeTaxAttributableToParent

us-gaap:AssetRetirementObligation

us-gaap:AssetRetirementObligationsNoncurrent
us-gaap:FairValueByMeasurementFrequency
us-gaap:AssetsFairValueDisclosure

us-gaap:AvailableForSaleSecuritiesDebtSecuritiesCurrent
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency
us-gaap:AvailableForSaleSecuritiesDebtSecuritiesNoncurrent
us-gaap:BusinessAcquisition, us-gaap:StatementScenario
us-gaap:BusinessAcquisitionPercentageOfVotingInterestsAcquired

us-gaap:BusinessCombinationContingentConsiderationLiabilityNoncurrent

us-gaap:CapitalizedContractCostNet
us-gaap:CapitalizedContractCost

us-gaap:CapitalizedContractCostNetCurrent

us-gaap:CapitalizedContractCostNetNoncurrent
us-gaap:CashAndCashEquivalents, us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency
us-gaap:CashAndCashEquivalentsFairValueDisclosure
us-gaap:FairValueByMeasurementFrequency
us-gaap:ConsolidationItems
us-gaap:CashCashEquivalentsAndShortTermInvestments

us-gaap:CommercialPaper

us-gaap:CommonStocksIncludingAdditionalPaidInCapital
us-gaap:ProductOrService
us-gaap:ContractWithCustomerAssetNet

us-gaap:ContractWithCustomerAssetNetCurrent
us-gaap:ProductOrService
us-gaap:ContractWithCustomerLiability

us-gaap:CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption
us-gaap:StatementEquityComponents

us-gaap:DebtInstrumentCarryingAmount
us-gaap:Currency
us-gaap:Currency, us-gaap:DebtInstrument
us-gaap:Currency, us-gaap:DebtInstrument, us-gaap:SubsequentEventType
us-gaap:DebtInstrumentFaceAmount
us-gaap:DebtInstrument

us-gaap:DebtInstrumentUnamortizedDiscount

us-gaap:DeferredFinanceCostsNet

us-gaap:DeferredGainLossOnDiscontinuationOfInterestRateFairValueHedge

us-gaap:DeferredIncomeTaxAssetsNet
us-gaap:ConsolidationItems
us-gaap:Restatement, us-gaap:AdjustmentsForNewAccountingPronouncements
us-gaap:Restatement, us-gaap:AdjustmentsForNewAccountingPronouncements, us-gaap:SubsequentEventType

us-gaap:DeferredIncomeTaxLiabilities

us-gaap:DeferredIncomeTaxLiabilitiesNet
us-gaap:ProductOrService
us-gaap:DeferredRevenue

us-gaap:DeferredRevenueCurrent
us-gaap:ProductOrService

us-gaap:DeferredRevenueNoncurrent
us-gaap:ProductOrService

us-gaap:DeferredTaxAssetsDeferredIncome

us-gaap:DeferredTaxAssetsGoodwillAndIntangibleAssets

us-gaap:DeferredTaxAssetsGross

us-gaap:DeferredTaxAssetsOther

us-gaap:DeferredTaxAssetsPropertyPlantAndEquipment

us-gaap:DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsPostretirementBenefits

us-gaap:DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost

us-gaap:DeferredTaxAssetsTaxDeferredExpenseReservesAndAccruals

us-gaap:DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAccruedLiabilities

us-gaap:DeferredTaxLiabilitiesDeferredExpenseCapitalizedSoftware

us-gaap:DeferredTaxLiabilitiesGoodwillAndIntangibleAssets

us-gaap:DeferredTaxLiabilitiesLeasingArrangements

us-gaap:DeferredTaxLiabilitiesOther

us-gaap:DeferredTaxLiabilitiesPropertyPlantAndEquipment

us-gaap:DeferredTaxLiabilitiesUndistributedForeignEarnings
us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanAccumulatedBenefitObligation
us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeBeforeTax
us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetGainsLossesBeforeTax
us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetPriorServiceCostCreditBeforeTax
us-gaap:DefinedBenefitPlanByPlanAssetCategories, us-gaap:RetirementPlanName, us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanTaxStatus, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanAmountOfEmployerAndRelatedPartySecuritiesIncludedInPlanAssets
us-gaap:DefinedBenefitPlanByPlanAssetCategories, us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType
us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanAmountsRecognizedInBalanceSheet

us-gaap:DefinedBenefitPlanAssetsForPlanBenefitsNoncurrent
us-gaap:ConsolidationItems
us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType
us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate
us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationRateOfCompensationIncrease
us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationWeightedAverageInterestCreditingRate
us-gaap:RetirementPlanFundingStatus
us-gaap:DefinedBenefitPlanBenefitObligation
us-gaap:RetirementPlanFundingStatus, us-gaap:RetirementPlanName, us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanTaxStatus, us-gaap:RetirementPlanType
us-gaap:RetirementPlanFundingStatus, us-gaap:RetirementPlanName, us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType
us-gaap:RetirementPlanFundingStatus, us-gaap:RetirementPlanSponsorLocation
us-gaap:RetirementPlanFundingStatus, us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanTaxStatus, us-gaap:RetirementPlanType
us-gaap:RetirementPlanFundingStatus, us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType
us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType
us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanTaxStatus, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsFiveFiscalYearsThereafter
us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType
us-gaap:RetirementPlanType
us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanTaxStatus, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsNextTwelveMonths
us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType
us-gaap:RetirementPlanType
us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanTaxStatus, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFive
us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType
us-gaap:RetirementPlanType
us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanTaxStatus, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFour
us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType
us-gaap:RetirementPlanType
us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanTaxStatus, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsYearThree
us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType
us-gaap:RetirementPlanType
us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanTaxStatus, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsYearTwo
us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanByPlanAssetCategories, us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:RetirementPlanName, us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanTaxStatus, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanFairValueOfPlanAssets
us-gaap:DefinedBenefitPlanByPlanAssetCategories, us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanByPlanAssetCategories, us-gaap:RetirementPlanName, us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanTaxStatus, us-gaap:RetirementPlanType
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:RetirementPlanName, us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanTaxStatus, us-gaap:RetirementPlanType
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType
us-gaap:RetirementPlanFundingStatus
us-gaap:RetirementPlanFundingStatus, us-gaap:RetirementPlanName, us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanTaxStatus, us-gaap:RetirementPlanType
us-gaap:RetirementPlanFundingStatus, us-gaap:RetirementPlanSponsorLocation
us-gaap:RetirementPlanFundingStatus, us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanTaxStatus, us-gaap:RetirementPlanType
us-gaap:RetirementPlanFundingStatus, us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType
us-gaap:RetirementPlanName, us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanTaxStatus, us-gaap:RetirementPlanType
us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType
us-gaap:RetirementPlanName, us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanTaxStatus, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanFundedPercentage
us-gaap:RetirementPlanTaxStatus, us-gaap:RetirementPlanType
us-gaap:RetirementPlanType
us-gaap:RetirementPlanFundingStatus
us-gaap:DefinedBenefitPlanFundedStatusOfPlan
us-gaap:RetirementPlanFundingStatus, us-gaap:RetirementPlanName, us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanTaxStatus, us-gaap:RetirementPlanType
us-gaap:RetirementPlanFundingStatus, us-gaap:RetirementPlanName, us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType
us-gaap:RetirementPlanFundingStatus, us-gaap:RetirementPlanSponsorLocation
us-gaap:RetirementPlanFundingStatus, us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanTaxStatus, us-gaap:RetirementPlanType
us-gaap:RetirementPlanFundingStatus, us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType
us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanPensionPlanWithProjectedBenefitObligationInExcessOfPlanAssetsPlanAssets
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanPensionPlanWithProjectedBenefitObligationInExcessOfPlanAssetsProjectedBenefitObligation
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateAccumulatedBenefitObligation
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateFairValueOfPlanAssets
us-gaap:DefinedBenefitPlanByPlanAssetCategories, us-gaap:RetirementPlanName, us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanTaxStatus, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanPlanAssetsTargetAllocationPercentage
us-gaap:DefinedBenefitPlanByPlanAssetCategories, us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType

us-gaap:DepositsAssetsNoncurrent
us-gaap:BalanceSheetLocation, us-gaap:FairValueByMeasurementFrequency
us-gaap:DerivativeAssetFairValueGrossAssetIncludingNotSubjectToMasterNettingArrangement

us-gaap:DerivativeAssetNotOffsetPolicyElectionDeduction

us-gaap:DerivativeAssetsNoncurrent
us-gaap:BalanceSheetLocation
us-gaap:DerivativeCollateralObligationToReturnCash
us-gaap:BalanceSheetLocation
us-gaap:DerivativeCollateralRightToReclaimCash
us-gaap:DerivativeInstrumentRisk, us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency
us-gaap:DerivativeInstrumentsInHedgesAssetsAtFairValue
us-gaap:DerivativeInstrumentRisk, us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency
us-gaap:DerivativeInstrumentsInHedgesLiabilitiesAtFairValue
us-gaap:DerivativeInstrumentRisk, us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency
us-gaap:DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsAssetAtFairValue
us-gaap:DerivativeInstrumentRisk, us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency
us-gaap:DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsLiabilityAtFairValue

us-gaap:DerivativeLiabilitiesNoncurrent
us-gaap:BalanceSheetLocation, us-gaap:FairValueByMeasurementFrequency
us-gaap:DerivativeLiabilityFairValueGrossLiabilityIncludingNotSubjectToMasterNettingArrangement

us-gaap:DerivativeLiabilityNotOffsetPolicyElectionDeduction
us-gaap:DerivativeInstrumentRisk
us-gaap:DerivativeNotionalAmount
us-gaap:DerivativeInstrumentRisk, us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship
us-gaap:DerivativeInstrumentRisk, us-gaap:HedgingDesignation
us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship

us-gaap:EmployeeRelatedLiabilitiesCurrent
us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType

us-gaap:EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized
us-gaap:AwardType

us-gaap:EquityMethodInvestments
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency
us-gaap:EquitySecuritiesFvNi

us-gaap:EquitySecuritiesWithoutReadilyDeterminableFairValueAmount

us-gaap:FinanceLeaseLiability
us-gaap:BalanceSheetLocation
us-gaap:BalanceSheetLocation
us-gaap:FinanceLeaseRightOfUseAsset

us-gaap:FinancingReceivableAllowanceForCreditLosses
us-gaap:FinancingReceivablePortfolioSegment
us-gaap:Restatement, us-gaap:AdjustmentsForNewAccountingPronouncements
us-gaap:Restatement, us-gaap:AdjustmentsForNewAccountingPronouncements, us-gaap:FinancingReceivablePortfolioSegment
us-gaap:Restatement, us-gaap:StatementGeographical, us-gaap:AdjustmentsForNewAccountingPronouncements
us-gaap:Restatement, us-gaap:StatementGeographical, us-gaap:AdjustmentsForNewAccountingPronouncements, us-gaap:FinancingReceivablePortfolioSegment
us-gaap:StatementGeographical, us-gaap:FinancingReceivablePortfolioSegment
us-gaap:FinancingReceivablePortfolioSegment
us-gaap:FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment
us-gaap:StatementGeographical, us-gaap:FinancingReceivablePortfolioSegment
us-gaap:FinancingReceivablePortfolioSegment
us-gaap:FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1
us-gaap:StatementGeographical, us-gaap:FinancingReceivablePortfolioSegment
us-gaap:FinancingReceivablePortfolioSegment
us-gaap:FinancingReceivableCollectivelyEvaluatedForImpairment
us-gaap:StatementGeographical, us-gaap:FinancingReceivablePortfolioSegment
us-gaap:FinancingReceivablePortfolioSegment
us-gaap:FinancingReceivableIndividuallyEvaluatedForImpairment
us-gaap:StatementGeographical, us-gaap:FinancingReceivablePortfolioSegment
us-gaap:CreditRatingMoodys, us-gaap:StatementGeographical
us-gaap:FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear
us-gaap:CreditRatingMoodys, us-gaap:StatementGeographical
us-gaap:FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear
us-gaap:CreditRatingMoodys, us-gaap:StatementGeographical
us-gaap:FinancingReceivableOriginatedInCurrentFiscalYear
us-gaap:CreditRatingMoodys, us-gaap:StatementGeographical
us-gaap:FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear
us-gaap:CreditRatingMoodys, us-gaap:StatementGeographical
us-gaap:FinancingReceivableOriginatedThreeYearsBeforeLatestFiscalYear
us-gaap:CreditRatingMoodys, us-gaap:StatementGeographical
us-gaap:FinancingReceivableOriginatedTwoYearsBeforeLatestFiscalYear
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivablesPeriodPastDue
us-gaap:FinancingReceivableRecordedInvestment90DaysPastDueAndStillAccruing
us-gaap:StatementGeographical, us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivablesPeriodPastDue
us-gaap:FinancingReceivablePortfolioSegment
us-gaap:FinancingReceivableRecordedInvestmentNonaccrualStatus
us-gaap:StatementGeographical, us-gaap:FinancingReceivablePortfolioSegment
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivablesPeriodPastDue
us-gaap:FinancingReceivableRecordedInvestmentPastDue
us-gaap:StatementGeographical, us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivablesPeriodPastDue

us-gaap:FiniteLivedIntangibleAssetsAccumulatedAmortization
us-gaap:FiniteLivedIntangibleAssetsByMajorClass

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive
us-gaap:FiniteLivedIntangibleAssetsByMajorClass

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths
us-gaap:FiniteLivedIntangibleAssetsByMajorClass

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseRemainderOfFiscalYear
us-gaap:FiniteLivedIntangibleAssetsByMajorClass

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearFive
us-gaap:FiniteLivedIntangibleAssetsByMajorClass

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearFour
us-gaap:FiniteLivedIntangibleAssetsByMajorClass

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearThree
us-gaap:FiniteLivedIntangibleAssetsByMajorClass

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo
us-gaap:FiniteLivedIntangibleAssetsByMajorClass

us-gaap:FiniteLivedIntangibleAssetsGross
us-gaap:FiniteLivedIntangibleAssetsByMajorClass
us-gaap:GuaranteeObligationsByNature
us-gaap:GuaranteeObligationsMaximumExposure
us-gaap:BalanceSheetLocation
us-gaap:HedgedLiabilityDiscontinuedFairValueHedgeCumulativeIncreaseDecrease
us-gaap:BalanceSheetLocation
us-gaap:HedgedLiabilityFairValueHedge
us-gaap:BalanceSheetLocation
us-gaap:HedgedLiabilityFairValueHedgeCumulativeIncreaseDecrease
us-gaap:FairValueByMeasurementFrequency, us-gaap:FinancialInstrument
us-gaap:HedgingLiabilitiesCurrent
us-gaap:FinancingReceivablePortfolioSegment
us-gaap:ImpairedFinancingReceivableRelatedAllowance
us-gaap:FinancingReceivablePortfolioSegment
us-gaap:ImpairedFinancingReceivableWithRelatedAllowanceRecordedInvestment

us-gaap:IncomeTaxesReceivableNoncurrent

us-gaap:InventoryFinishedGoodsNetOfReserves

us-gaap:InventoryWorkInProcessAndRawMaterialsNetOfReserves

us-gaap:InvestmentsAndOtherNoncurrentAssets
us-gaap:FairValueByMeasurementFrequency
us-gaap:LiabilitiesFairValueDisclosure

us-gaap:LiabilityForUncertainTaxPositionsNoncurrent
us-gaap:CreditFacility, us-gaap:DebtInstrument
us-gaap:LineOfCreditFacilityMaximumBorrowingCapacity
us-gaap:DebtInstrument

us-gaap:LoansAndLeasesReceivableCollateralForSecuredBorrowings

us-gaap:LoansAndLeasesReceivableDeferredIncome
us-gaap:FinancingReceivablePortfolioSegment

us-gaap:LoansAndLeasesReceivableGrossCarryingAmount
us-gaap:FinancingReceivablePortfolioSegment

us-gaap:LoansAndLeasesReceivableNetOfDeferredIncome
us-gaap:CreditRatingMoodys, us-gaap:StatementGeographical
us-gaap:FinancingReceivablePortfolioSegment
us-gaap:StatementGeographical, us-gaap:FinancingReceivablePortfolioSegment

us-gaap:LongTermDebtAndCapitalLeaseObligations

us-gaap:LongTermDebtAndCapitalLeaseObligationsCurrent

us-gaap:LongTermDebtAndCapitalLeaseObligationsIncludingCurrentMaturities

us-gaap:LongTermDebtFairValue

us-gaap:LongTermDebtPercentageBearingFixedInterestRate

us-gaap:LongTermDebtPercentageBearingVariableInterestRate

us-gaap:LongtermDebtPercentageBearingFixedInterestAmount

us-gaap:LongtermDebtPercentageBearingVariableInterestAmount
us-gaap:Currency
us-gaap:LongtermDebtWeightedAverageInterestRate
us-gaap:Currency, us-gaap:DebtInstrument

us-gaap:NotesAndLoansReceivableNetCurrent
us-gaap:FinancingReceivablePortfolioSegment

us-gaap:NotesAndLoansReceivableNetNoncurrent
us-gaap:FinancingReceivablePortfolioSegment

us-gaap:NotesReceivableNet
us-gaap:FinancingReceivablePortfolioSegment

us-gaap:OperatingLeaseLiability

us-gaap:OperatingLeaseLiabilityCurrent

us-gaap:OperatingLeaseLiabilityNoncurrent
us-gaap:ConsolidationItems
us-gaap:OtherAssets

us-gaap:OtherAssetsMiscellaneousNoncurrent

us-gaap:OtherReceivablesNetCurrent

us-gaap:OtherSundryLiabilitiesNoncurrent

us-gaap:ProductWarrantyAccrualNoncurrent

us-gaap:RestrictedCash
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant

us-gaap:ShortTermBankLoansAndNotesPayable

us-gaap:ShortTermBorrowings
us-gaap:ShortTermDebtType
us-gaap:ShortTermDebtWeightedAverageInterestRate

us-gaap:StandardProductWarrantyAccrual

us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
us-gaap:StatementEquityComponents

us-gaap:SupplementalUnemploymentBenefitsDisabilityRelatedBenefits

us-gaap:TreasuryStockCommonShares

us-gaap:TreasuryStockCommonValue

us-gaap:UnbilledContractsReceivable

us-gaap:UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued

us-gaap:UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate
us-gaap:OtherCommitments
us-gaap:UnusedCommitmentsToExtendCredit
us-gaap:ValuationAllowancesAndReservesType
us-gaap:ValuationAllowancesAndReservesBalance

Tables

  2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-312009-09-302009-06-302009-03-31
us-gaap:CommonStockSharesIssued ██████▇▇▇▇▇▇▇▇▇▇▇▆▆▆▆▆▆▆▅▅▅▅▄▄▃▂▂▁2238223722362234223222322230222822282226222422242222222122192219221722152213221222102207220522042201219421922188217921752169215221452135NANANA
us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding ▁▁▁▁▃▄▄▅▆▆▇██895892890893915919925933939947957960964NA979986992NA99710051041NA109811091124114911611174120412211240127212961321133813361349
us-gaap:WeightedAverageNumberOfSharesOutstandingBasic ▁▁▁▁▃▄▄▅▅▆▇██888886886889911915920929934942954957961NA975982988NA9919991035NA109011001113113711491159118812041222125512781301131913261344
us-gaap:EarningsPerShareBasic ▃▃▄▃▅▄▃▅▄▃▅▄▄▇▅▅▄█▁▆▄█▆▅▄▅▅▄▅▅▄▄▄▃▄▄▃1.321.892.821.792.952.631.822.932.491.862.992.622.094.593.033.512.365.490.024.142.35.7100000000000013.72.932.723.363.382.653.233.042.342.862.652.02.442.341.71
us-gaap:EarningsPerShareDiluted ▃▃▄▃▅▄▃▅▄▃▅▄▄▇▅▅▄█▁▆▄█▆▅▄▅▅▄▅▅▄▄▄▃▄▄▃1.311.872.811.782.942.611.812.922.481.852.982.612.094.573.013.52.355.460.024.122.295.673.682.912.73.333.342.613.193.02.312.822.611.972.42.321.7
us-gaap:IncomeLossFromContinuingOperationsPerBasicShare ▁▂▃▂▄▃▂▄▃▂▄▃▂▆▄▅▃█▄▆▃█▅1.321.892.821.792.952.631.822.932.491.862.992.622.094.593.043.592.455.5299999999999993.484.252.445.743.79NANANANANANANANANANANANANANA
us-gaap:IncomeLossFromContinuingOperationsPerDilutedShare ▁▂▃▂▄▃▂▄▃▂▄▃▂▆▄▅▃█▄▆▃█▅1.311.872.811.782.942.611.812.922.481.852.982.612.094.573.023.582.445.53.464.232.435.7000000000000013.77NANANANANANANANANANANANANANA
  2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-312009-09-302009-06-302009-03-31
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us-gaap:AssetsCurrent ▁▁█▄▃▃▃▂▂▂▂▂▃▂▂▂▂▃▃▃▃▃▃▃▃▃▃▃▂▃▃▂▂▂38931381217751752705482574679549122447424501342889414334352447623425044211245186463164942247163481824795951350475334791148949481414739248847453734693747524444694489545697NANANA
us-gaap:CashAndCashEquivalentsAtCarryingValue ▂▁█▃▂▂▂▂▂▁▁▁▂▁▁▁▁▁▁▁▁▂▁▁▂▂▂▂▂▂▂▁▁▂▁▂▂11218100874539917134115631074111949109151169610096903910017143547686948083938796847695619715940910716100729558105851190910864118351130311714127639859103251247295321167812294
us-gaap:AccountsReceivableNetCurrent ▁▁▂▁▂▂▃▄▄▄▄▅▄▄▃▄▅▅▅▇▆█▇█▇▇▇▇▆█692767537414698770717445777881508401837782918782852783337987863288069090912299029682104659865102771008497721017210012971910539NANANANANANANA
us-gaap:InventoryNet ▂▂▂▂▃▂▂▂▁▁▂▂▂▁▁▃▃▄▆▆▆▅▆▆▆▇██▇▇▇▇▇▇1786171217451771189317421753171116041609172916851690155116131912197021032356233824562310249223892421258627582754266325732549262925952524NANANA
us-gaap:PrepaidExpenseAndOtherAssetsCurrent ▁▁▁▁▁▁▁▅▅▆▅▆▅▅▅▅█▆▆▅▅▅▆▆▆▆▆▇▇▆250925152409247823882443257343894155471545394676433442054158447058904967502242634430448847234746474750165113529951724662NANANANANANANA
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us-gaap:PropertyPlantAndEquipmentGross ▂▂▃▃▃▃▃▃▂▂▂▂▁▁▁▇▆▇▇████▇▇█▇█▇██▇▆▇31089316703184332692324843223332775319373129130681308423013629627293422922938639383033903439950409364047840475408083955240056407164015840441401394112640765399363829239018NANANA
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us-gaap:PropertyPlantAndEquipmentNet ▁▂▂▃▃▃▄▃▃▃▃▃▃▃▃▃▂▃▃▇▇▇▇▇▇█▇█▇███▇▇9626100631020210675109491102411278110571090310865111041109210910107271066110702105091077111068137481368313821138771335613597140271386513946138871423914208140091353413841NANANA
us-gaap:Goodwill ██▄▄▄▄▄▄▄▄▄▄▄▃▃▃▃▃▃▃▃▃▃▃▃▂▂▂▂▂▂▁▁▁57517579513528436281365263648236732367823651736307364013642234322320213027530535298713055631045315683121431184308822884629025282702773527468249132560925408227032054420889NANANA
 us-gaap:Goodwill us-gaap:BusinessAcquisition ibm:RedHat▄▄2310023100NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:Goodwill us-gaap:BusinessAcquisition,us-gaap:StatementBusinessSegments ibm:RedHat,ibm:CloudAndCognitiveSoftware█▁1850018400NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:Goodwill us-gaap:ConsolidationItems,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,ibm:CloudAndCognitiveSoftware██▁▁42620428192468324625NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
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us-gaap:FiniteLivedIntangibleAssetsNet ▇█▁▁▁▁▁▂▂▂▂▂14666156132728295631343344352139814179443648815148NA3487NANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:FiniteLivedIntangibleAssetsNet us-gaap:FiniteLivedIntangibleAssetsByMajorClass ibm:PatentsAndTrademarks██▁▁▁▁▂▂▂▂▂▂18041890263287337363387440468496540572NA193NANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:FiniteLivedIntangibleAssetsNet us-gaap:FiniteLivedIntangibleAssetsByMajorClass us-gaap:CustomerRelationships▇█▁▁▁▁▁▂▂▂▂▂7185768478287210261113119413631398149716681769NA929NANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:FiniteLivedIntangibleAssetsNet us-gaap:FiniteLivedIntangibleAssetsByMajorClass us-gaap:DevelopedTechnologyRights▇█▁▁▁▂▂▂▂▂▃▃465850277017849491037111713101424154217591894NA1563NANANANANANANANANANANANANANANANANANANANANANANA
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us-gaap:LiabilitiesCurrent ▇▃█▆▄▃▄▁▄▄▃▂▃▃▂▄▄▆██▇▇▆▇█▆▆▅▄▆▇▃▃▃40673350664235138871368223544235733316973596636481344473358534664342693373235535356403960042306424334105840154392224103742122394993890338209360283984340387354433499334575NANANA
us-gaap:AccountsPayableCurrent ▁▁▂▄▄▄▄▄▃▄▄▄▄▅▃▅▆▇▅▆▇█▆▇▇▇██▇▇▇▇▇▆4172404247245711538455185736544251265324527154845302602851665943631468645855627168657461626368217203708574827416709371126747708472336345NANANA
us-gaap:TaxesPayableCurrent ▂▁▂▂▂▃▃▃▃▂▁▁▁▃▃▅▄█▂▁▁▇▇▇▇▁▁▁▂▂▂▃▃▃2348215424392484250227802918303827792747213722752203284728833639353950842475233522454633474647084678214721832184236023632531290828952775NANANA
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 us-gaap:LongTermDebt us-gaap:DebtInstrument,us-gaap:SubsequentEventType ibm:FixedRateDebtDueIn2021,us-gaap:SubsequentEventNANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:LongTermDebtNoncurrent ▇██▄▃▄▄▄▄▃▃▄▄▃▃▃▃▃▃▃▃▃▂▁▁▁▁▁52685577975844539727359893785140410413273761234441355633963840254334283212233339342953507332821340083466832856284782629224672243332476625760NANANANANANANANANA
us-gaap:PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent ▄▃▄▄▃▃▄▆▅▅▄▄▅▄▅▅▅▇▂▃▃▄▆▆█▄▄▆▂▃▃▂▁▂16474159251647116467157741596316750175541732016967166881672316939165041701217298172111826115093159841603116242179941796219069166821654417579153751601415995151451459815216NANANA
us-gaap:MinorityInterest ▅▆▅▅▆▅▅▅▅▄▇▇▇██▇▇▇▆▆▅▆▅▅▄▅▂▁▁▁▃▄▄▄12913913112613412812413012512114915614716215715314814614013613313713112712212692828784104121117116NANANA
us-gaap:OtherLiabilitiesNoncurrent ██▅▅▃▃▃▁▁▁▂▂▂▂▂▂▂▂▄▃▃▃▂▁▁▃▂▂▂▂▂▂▂▂1587415564121901218499791000010250772374377601813883858264809987398827879188921061310224101069934805778127771933591669112865488518330884282958506NANANA
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us-gaap:StockholdersEquity ▆▅▅▄▆▅▅▆▅▅▄▃▃▂▂▂▁▁▂▄▄█▆▅▅▇▆▆▇██▇▇▇19999179561764516481197841852018166196271841918327170101573314925142621329413684121411186814255173771660722792198771775619092215412047220701222912312722671222382105922033NANANA
us-gaap:RetainedEarningsAccumulatedDeficit ██████▇▇▇▇▇▇▇▇▆▆▆▆▅▆▅▅▅▄▄▄▃▃▃▂▂▁▁▁1626261607091604671593961586121573491563711555651542341532921495851480711468881461241428981412181390301377931334031344831314311300421248851218831197131127731099281070361002669733494590880958532382783NANANA
us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax ▁▁▁▁▂▂▂▂▂▂▂▂▁▁▂▂▂▂▆▆▆▅▄▃▃▆▆▆▇█▇█▇▇-29283-29086-28841-29182-27820-28290-28583-27521-28189-28710-28164-28604-28998-29607-28155-27432-27842-27875-20978-20369-21156-21602-24971-25774-25466-20720-21498-21115-18099-17109-18119-17479-18510-18178NANANA
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us-gaap:NetCashProvidedByUsedInOperatingActivities 4476NANA4759NANA4602NANA3955NANA5530NANANANANANANANANANANANANANANANANA3792NANA4437NANA4386
us-gaap:NetCashProvidedByUsedInInvestingActivities -902NANA-853NANA-1764NANA350NANA-1886NANANANANANANANANANANANANANANANANA498NANA-699NANA-48
us-gaap:NetCashProvidedByUsedInFinancingActivities -115NANA1863NANA-2909NANA-2134NANA2806NANANANANANANANANANANANANANANANANA-2314NANA-3368NANA-4583
  2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-312009-09-302009-06-302009-03-31
us-gaap:NetCashProvidedByUsedInOperatingActivities 4476NANA4759NANA4602NANA3955NANA5530NANANANANANANANANANANANANANANANANA3792NANA4437NANA4386
us-gaap:NetIncomeLoss ▁▃▇▃▇▆▃▇▆▃█▇▄1175167224981591269424041679272623311750285325042014NANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:ProfitLoss ▁▃▇▃█▇▃1175167224981591269424041679NANA17502853250420144463295034492328548318413723846184404132263032382438813066383936642863358933862601321431032295
 us-gaap:ProfitLoss us-gaap:StatementEquityComponents us-gaap:Parent▁▃▇▃█▇▃1175167224981591269424041679NANA1750NANA20144463295034492328548318413723846184NANA3032NANA3066NANA2863NANA2601NANANA
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  2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-312009-09-302009-06-302009-03-31
us-gaap:NetCashProvidedByUsedInInvestingActivities -902NANA-853NANA-1764NANA350NANA-1886NANANANANANANANANANANANANANANANANA498NANA-699NANA-48
us-gaap:PaymentsToAcquirePropertyPlantAndEquipment 630NANA539NANA870NANA740NANA95690994886585794710369088491064NANA714NANA937NANA915NANA758NANANA
us-gaap:PaymentsToAcquireInvestments 1096NANA1138NANA1521NANA1273NANA1041972385897819825677359477890NANA2136NANA1227NANA415NANA1747NANA922
  2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-312009-09-302009-06-302009-03-31
us-gaap:NetCashProvidedByUsedInFinancingActivities -115NANA1863NANA-2909NANA-2134NANA2806NANANANANANANANANANANANANANANANANA-2314NANA-3368NANA-4583
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 us-gaap:DebtInstrumentInterestRateStatedPercentage us-gaap:Currency,us-gaap:Range,us-gaap:DebtInstrument,us-gaap:SubsequentEventType currency:EUR,srt:Maximum,ibm:EightToTwentyYearFixedRateNotesIssuedFebruary2020,us-gaap:SubsequentEventNANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:DebtInstrumentInterestRateStatedPercentage us-gaap:Currency,us-gaap:Range,us-gaap:DebtInstrument,us-gaap:SubsequentEventType currency:EUR,srt:Minimum,ibm:EightToTwentyYearFixedRateNotesIssuedFebruary2020,us-gaap:SubsequentEventNANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA

Common Stock Par Or Stated Value Per Share

Common Stock Shares Issued

us-gaap:CommonStockSharesIssued



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312008-12-31
Value2238223722372236223422332232223222302229222822282226222522242224222222212219221922172215221322122210220722052204220121972194219221882182217921752169216121522145213521272096
Percentage of CommonStockSharesIssued100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Common Stock Shares Authorized

Weighted Average Number Of Diluted Shares Outstanding

us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-312009-09-302009-06-302009-03-31
Value89589289089391591992593393994795796096497998699299710051041109811091124114911611174120412211240127212961321133813361349
Percentage of WeightedAverageNumberOfDilutedSharesOutstanding100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Weighted Average Number Of Shares Outstanding Basic

us-gaap:WeightedAverageNumberOfSharesOutstandingBasic



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-312009-09-302009-06-302009-03-31
Value8888868868899119159209299349429549579619759829889919991035109011001113113711491159118812041222125512781301131913261344
Percentage of WeightedAverageNumberOfSharesOutstandingBasic100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Earnings Per Share Basic

us-gaap:EarningsPerShareBasic



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-312009-09-302009-06-302009-03-31
Value1.321.892.821.792.952.631.822.932.491.862.992.622.094.593.033.512.365.490.024.142.35.7100000000000013.72.932.723.363.382.653.233.042.342.862.652.02.442.341.71
Percentage of EarningsPerShareBasic100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Earnings Per Share Diluted

us-gaap:EarningsPerShareDiluted



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-312009-09-302009-06-302009-03-31
Value1.311.872.811.782.942.611.812.922.481.852.982.612.094.573.013.52.355.460.024.122.295.673.682.912.73.333.342.613.193.02.312.822.611.972.42.321.7
Percentage of EarningsPerShareDiluted100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Income Loss From Continuing Operations Per Basic Share

us-gaap:IncomeLossFromContinuingOperationsPerBasicShare



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-30
Value1.321.892.821.792.952.631.822.932.491.862.992.622.094.593.043.592.455.5299999999999993.484.252.445.743.79
Percentage of IncomeLossFromContinuingOperationsPerBasicShare100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Income Loss From Continuing Operations Per Diluted Share

us-gaap:IncomeLossFromContinuingOperationsPerDilutedShare



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-30
Value1.311.872.811.782.942.611.812.922.481.852.982.612.094.573.023.582.445.53.464.232.435.7000000000000013.77
Percentage of IncomeLossFromContinuingOperationsPerDilutedShare100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Revenues

us-gaap:Revenues



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-312009-09-302009-06-302009-03-31
Value17571180281916118182187562000319072191531928918155192262023818684220591928020813195902411322397243642248427699237202492423408247472578324673261572666624607242712372422857235662325021711
Percentage of Revenues100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ConsolidationItems

ibm:OperatingSegmentsExcludingIntersegmentElimination



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-30
Value175081792118741177651869419958185571909819224
Percentage of Revenues99.699.497.897.799.799.897.399.799.7
Percentage of Revenues99.699.497.897.799.799.897.399.799.7
Percentage of Revenues ibm:OperatingSegmentsExcludingIntersegmentElimination100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IntersegmentElimination



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-30
Value-1514-1541-1430-1668-1476-1670-1592-1384-1388-1492-1468-1561-1645-1601-1728-1968-1860-2029-2119-2099-2133-18631928-1919-2048-19761921
Percentage of Revenues-8.6-8.5-7.5-9.2-7.9-8.3-8.3-7.2-7.2-8.2-7.6-7.7-8.8-8.3-8.3-10.0-7.7-9.1-8.7-9.3-7.7-7.97.7-8.20.0-8.07.5
Percentage of Revenues-8.6-8.5-7.5-9.2-7.9-8.3-8.3-7.2-7.2-8.2-7.6-7.7-8.8-8.3-8.3-10.0-7.7-9.1-8.7-9.3-7.7-7.97.7-8.20.0-8.07.5
Percentage of Revenues us-gaap:IntersegmentElimination100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OperatingSegments



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-30
Value1902319462201701943320170216282059520482206121957620613217232026420821225062589224334263902447629732254612673725185312652657027529
Percentage of Revenues108.3108.0105.3106.9107.5108.1108.0106.9106.9107.8107.2107.3108.5108.0108.1107.4108.6108.3108.9107.3107.3107.3107.60.0107.4106.8
Percentage of Revenues108.3108.0105.3106.9107.5108.1108.0106.9106.9107.8107.2107.3108.5108.0108.1107.4108.6108.3108.9107.3107.3107.3107.60.0107.4106.8
Percentage of Revenues us-gaap:OperatingSegments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

ibm:OperatingSegmentsExcludingIntersegmentElimination, ibm:CloudAndCognitiveSoftware



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value5238528056455037496254705116
Percentage of Revenues29.829.329.527.726.527.326.8
Percentage of Revenues29.829.329.527.726.527.326.8
Percentage of Revenues ibm:OperatingSegmentsExcludingIntersegmentElimination ibm:CloudAndCognitiveSoftware100.0100.0100.0100.0100.0100.0100.0

ibm:OperatingSegmentsExcludingIntersegmentElimination, ibm:GlobalBusinessServices



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-30
Value413641174155411941304192411540934097
Percentage of Revenues23.522.821.722.722.021.021.621.421.2
Percentage of Revenues23.522.821.722.722.021.021.621.421.2
Percentage of Revenues ibm:OperatingSegmentsExcludingIntersegmentElimination ibm:GlobalBusinessServices100.0100.0100.0100.0100.0100.0100.0100.0100.0

ibm:OperatingSegmentsExcludingIntersegmentElimination, ibm:GlobalFinancing



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-30
Value299343351406388394405427415
Percentage of Revenues1.71.91.82.22.12.02.12.22.2
Percentage of Revenues1.71.91.82.22.12.02.12.22.2
Percentage of Revenues ibm:OperatingSegmentsExcludingIntersegmentElimination ibm:GlobalFinancing100.0100.0100.0100.0100.0100.0100.0100.0100.0

ibm:OperatingSegmentsExcludingIntersegmentElimination, ibm:GlobalTechnologyServices



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value6467670068376875710173257421
Percentage of Revenues36.837.235.737.837.936.638.9
Percentage of Revenues36.837.235.737.837.936.638.9
Percentage of Revenues ibm:OperatingSegmentsExcludingIntersegmentElimination ibm:GlobalTechnologyServices100.0100.0100.0100.0100.0100.0100.0

ibm:OperatingSegmentsExcludingIntersegmentElimination, ibm:Systems



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-30
Value136814811753132817362177150017211747
Percentage of Revenues7.88.29.17.39.310.97.99.09.1
Percentage of Revenues7.88.29.17.39.310.97.99.09.1
Percentage of Revenues ibm:OperatingSegmentsExcludingIntersegmentElimination ibm:Systems100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IntersegmentElimination, ibm:CloudAndCognitiveSoftware



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value-813-686-607-841-777-811-931
Percentage of Revenues-4.6-3.8-3.2-4.6-4.1-4.1-4.9
Percentage of Revenues-4.6-3.8-3.2-4.6-4.1-4.1-4.9
Percentage of Revenues us-gaap:IntersegmentElimination ibm:CloudAndCognitiveSoftware100.0100.0100.0100.0100.0100.0100.0

us-gaap:IntersegmentElimination, ibm:GlobalBusinessServices



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-06-302012-06-30
Value-46-70-69-74-77-83-89-92-93-86-93-103-113-119-120-130-131-127-135-140-141188180
Percentage of Revenues-0.3-0.4-0.4-0.4-0.4-0.4-0.5-0.5-0.5-0.5-0.5-0.5-0.6-0.5-0.6-0.6-0.7-0.5-0.6-0.6-0.60.80.7
Percentage of Revenues-0.3-0.4-0.4-0.4-0.4-0.4-0.5-0.5-0.5-0.5-0.5-0.5-0.6-0.5-0.6-0.6-0.7-0.5-0.6-0.6-0.60.80.7
Percentage of Revenues us-gaap:IntersegmentElimination ibm:GlobalBusinessServices100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IntersegmentElimination, ibm:GlobalFinancing



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-06-302012-06-30
Value-212-302-281-300-338-473-429-272-290-363-352-502-486-763-584-704-586-588-598-685-617575515
Percentage of Revenues-1.2-1.7-1.5-1.6-1.8-2.4-2.2-1.4-1.5-2.0-1.8-2.5-2.6-3.5-3.0-3.4-3.0-2.4-2.7-2.8-2.72.32.0
Percentage of Revenues-1.2-1.7-1.5-1.6-1.8-2.4-2.2-1.4-1.5-2.0-1.8-2.5-2.6-3.5-3.0-3.4-3.0-2.4-2.7-2.8-2.72.32.0
Percentage of Revenues us-gaap:IntersegmentElimination ibm:GlobalFinancing100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IntersegmentElimination, ibm:GlobalTechnologyServices



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-06-302012-06-30
Value-294-287-302-290-279-169-141-234-190-204-195-195-252-247-241292291
Percentage of Revenues-1.7-1.6-1.6-1.6-1.5-0.8-0.7-1.1-1.0-1.0-1.0-0.8-1.1-1.0-1.11.21.1
Percentage of Revenues-1.7-1.6-1.6-1.6-1.5-0.8-0.7-1.1-1.0-1.0-1.0-0.8-1.1-1.0-1.11.21.1
Percentage of Revenues us-gaap:IntersegmentElimination ibm:GlobalTechnologyServices100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IntersegmentElimination, ibm:Systems



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-31
Value-148-195-171-163-181-242-153-227-177-167-176-206-212-209-189-173
Percentage of Revenues-0.8-1.1-0.9-0.9-1.0-1.2-0.8-1.2-0.9-0.9-0.9-1.0-1.1-1.1-0.9-0.9
Percentage of Revenues-0.8-1.1-0.9-0.9-1.0-1.2-0.8-1.2-0.9-0.9-0.9-1.0-1.1-1.1-0.9-0.9
Percentage of Revenues us-gaap:IntersegmentElimination ibm:Systems100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OperatingSegments, ibm:CloudAndCognitiveSoftware



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value6052596662525879573862806047
Percentage of Revenues34.433.132.632.330.631.431.7
Percentage of Revenues34.433.132.632.330.631.431.7
Percentage of Revenues us-gaap:OperatingSegments ibm:CloudAndCognitiveSoftware100.0100.0100.0100.0100.0100.0100.0

us-gaap:OperatingSegments, ibm:GlobalBusinessServices



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-30
Value4183418742244193420742754263418541904092428443594245441543264475444944754594467446244915473547954664490247174847
Percentage of Revenues23.823.222.023.122.421.422.421.921.722.522.321.522.720.022.421.522.718.620.519.220.617.720.019.219.90.019.118.8
Percentage of Revenues23.823.222.023.122.421.422.421.921.722.522.321.522.720.022.421.522.718.620.519.220.617.720.019.219.90.019.118.8
Percentage of Revenues us-gaap:OperatingSegments ibm:GlobalBusinessServices100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OperatingSegments, ibm:GlobalFinancing



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-06-302012-06-30
Value5116456327067268678346987057687639268961216103111821048111910841189112910611032
Percentage of Revenues2.93.63.33.93.94.34.43.63.74.24.04.64.85.55.35.75.34.64.84.95.04.34.0
Percentage of Revenues2.93.63.33.93.94.34.43.63.74.24.04.64.85.55.35.75.34.64.84.95.04.34.0
Percentage of Revenues us-gaap:OperatingSegments ibm:GlobalFinancing100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OperatingSegments, ibm:GlobalTechnologyServices



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-30
Value67616988713971647380749475628360812782728081936294709661957010180975598289852105811020610286
Percentage of Revenues38.538.837.339.439.337.539.637.942.239.741.338.842.339.742.636.841.139.442.10.041.239.9
Percentage of Revenues38.538.837.339.439.337.539.637.942.239.741.338.842.339.742.636.841.139.442.10.041.239.9
Percentage of Revenues us-gaap:OperatingSegments ibm:GlobalTechnologyServices100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OperatingSegments, ibm:Systems



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-31
Value1516167619241491191724191653194819241562173421561888218227302314
Percentage of Revenues8.69.310.08.210.212.18.710.210.08.69.010.710.111.313.111.8
Percentage of Revenues8.69.310.08.210.212.18.710.210.08.69.010.710.111.313.111.8
Percentage of Revenues us-gaap:OperatingSegments ibm:Systems100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProductOrService

us-gaap:FinancialService



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-30
Value302343351404389396410433418
Percentage of Revenues1.71.91.82.22.12.02.12.32.2
Percentage of Revenues1.71.91.82.22.12.02.12.32.2
Percentage of Revenues us-gaap:FinancialService100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:Product



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-31
Value5895598164585354580067215700601763245404
Percentage of Revenues33.533.233.729.430.933.629.931.432.829.8
Percentage of Revenues33.533.233.729.430.933.629.931.432.829.8
Percentage of Revenues us-gaap:Product100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:TechnologyService



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-30
Value113731170312352124231256612886129611270312547
Percentage of Revenues64.764.964.568.367.064.468.066.365.0
Percentage of Revenues64.764.964.568.367.064.468.066.365.0
Percentage of Revenues us-gaap:TechnologyService100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StatementGeographical

srt:Americas



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value8166851488068493885392128707
Percentage of Revenues46.547.246.046.747.246.145.7
Percentage of Revenues46.547.246.046.747.246.145.7
Percentage of Revenues srt:Americas100.0100.0100.0100.0100.0100.0100.0

srt:AsiaPacific



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value3888403642053961407643844188
Percentage of Revenues22.122.421.921.821.721.922.0
Percentage of Revenues22.122.421.921.821.721.922.0
Percentage of Revenues srt:AsiaPacific100.0100.0100.0100.0100.0100.0100.0

us-gaap:EMEA



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value5517547761495727582764076176
Percentage of Revenues31.430.432.131.531.132.032.4
Percentage of Revenues31.430.432.131.531.132.032.4
Percentage of Revenues us-gaap:EMEA100.0100.0100.0100.0100.0100.0100.0

Revenue From Contract With Customer Excluding Assessed Tax

us-gaap:ConsolidationItems

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax

us-gaap:MaterialReconcilingItems



Period End2020-03-312019-03-31
Value62451
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax100.0100.0
Percentage of Revenues0.42.5
Percentage of Revenues us-gaap:MaterialReconcilingItems0.0108.2

us-gaap:ConsolidationItems, us-gaap:ProductOrService, us-gaap:StatementBusinessSegments

ibm:OperatingSegmentsExcludingIntersegmentElimination, ibm:ApplicationManagementServices, ibm:GlobalBusinessServices



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value1840189719191908191519462002
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax2967.70.00.0423.10.00.00.0
Percentage of Revenues10.510.510.010.510.29.710.5
Percentage of Revenues ibm:OperatingSegmentsExcludingIntersegmentElimination ibm:ApplicationManagementServices ibm:GlobalBusinessServices0.00.00.00.00.00.00.0

ibm:OperatingSegmentsExcludingIntersegmentElimination, ibm:CloudDataPlatforms, ibm:CloudAndCognitiveSoftware



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value2536230821731917196820791950
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax4090.30.00.0425.10.00.00.0
Percentage of Revenues14.412.811.310.510.510.410.2
Percentage of Revenues ibm:OperatingSegmentsExcludingIntersegmentElimination ibm:CloudDataPlatforms ibm:CloudAndCognitiveSoftware0.00.00.00.00.00.00.0

ibm:OperatingSegmentsExcludingIntersegmentElimination, ibm:CognitiveApplications, ibm:CloudAndCognitiveSoftware



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value1182138314541308132414131286
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1906.50.00.0290.00.00.00.0
Percentage of Revenues6.77.77.67.27.17.16.7
Percentage of Revenues ibm:OperatingSegmentsExcludingIntersegmentElimination ibm:CognitiveApplications ibm:CloudAndCognitiveSoftware0.00.00.00.00.00.00.0

ibm:OperatingSegmentsExcludingIntersegmentElimination, ibm:ConsultingServices, ibm:GlobalBusinessServices



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value2071197319781964190019311867
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax3340.30.00.0435.50.00.00.0
Percentage of Revenues11.810.910.310.810.19.79.8
Percentage of Revenues ibm:OperatingSegmentsExcludingIntersegmentElimination ibm:ConsultingServices ibm:GlobalBusinessServices0.00.00.00.00.00.00.0

ibm:OperatingSegmentsExcludingIntersegmentElimination, ibm:GlobalProcessServices, ibm:GlobalBusinessServices



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value225247258247314315246
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax362.90.00.054.80.00.00.0
Percentage of Revenues1.31.41.31.41.71.61.3
Percentage of Revenues ibm:OperatingSegmentsExcludingIntersegmentElimination ibm:GlobalProcessServices ibm:GlobalBusinessServices0.00.00.00.00.00.00.0

ibm:OperatingSegmentsExcludingIntersegmentElimination, ibm:InfrastructureAndCloudServices, ibm:GlobalTechnologyServices



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value4916507151745209539355755639
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax7929.00.00.01155.00.00.00.0
Percentage of Revenues28.028.127.028.628.827.929.6
Percentage of Revenues ibm:OperatingSegmentsExcludingIntersegmentElimination ibm:InfrastructureAndCloudServices ibm:GlobalTechnologyServices0.00.00.00.00.00.00.0

ibm:OperatingSegmentsExcludingIntersegmentElimination, ibm:OperatingSystemsSoftware, ibm:Systems



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value371364425414397421407
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax598.40.00.091.80.00.00.0
Percentage of Revenues2.12.02.22.32.12.12.1
Percentage of Revenues ibm:OperatingSegmentsExcludingIntersegmentElimination ibm:OperatingSystemsSoftware ibm:Systems0.00.00.00.00.00.00.0

ibm:OperatingSegmentsExcludingIntersegmentElimination, ibm:SystemsHardware, ibm:Systems



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value99711171328914133917561093
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1608.10.00.0202.70.00.00.0
Percentage of Revenues5.76.26.95.07.18.85.7
Percentage of Revenues ibm:OperatingSegmentsExcludingIntersegmentElimination ibm:SystemsHardware ibm:Systems0.00.00.00.00.00.00.0

ibm:OperatingSegmentsExcludingIntersegmentElimination, ibm:TechnologySupportServices, ibm:GlobalTechnologyServices



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value1550162916631665170717501782
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax2500.00.00.0369.20.00.00.0
Percentage of Revenues8.89.08.79.29.18.79.3
Percentage of Revenues ibm:OperatingSegmentsExcludingIntersegmentElimination ibm:TechnologySupportServices ibm:GlobalTechnologyServices0.00.00.00.00.00.00.0

ibm:OperatingSegmentsExcludingIntersegmentElimination, ibm:TransactionProcessingPlatforms, ibm:CloudAndCognitiveSoftware



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value1520158920181812166919781880
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax2451.60.00.0401.80.00.00.0
Percentage of Revenues8.78.810.510.08.99.99.9
Percentage of Revenues ibm:OperatingSegmentsExcludingIntersegmentElimination ibm:TransactionProcessingPlatforms ibm:CloudAndCognitiveSoftware0.00.00.00.00.00.00.0

us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

ibm:OperatingSegmentsExcludingIntersegmentElimination, ibm:CloudAndCognitiveSoftware



Period End2020-03-312019-03-31
Value52384967
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax8448.41101.3
Percentage of Revenues29.827.3
Percentage of Revenues ibm:OperatingSegmentsExcludingIntersegmentElimination ibm:CloudAndCognitiveSoftware100.098.6

ibm:OperatingSegmentsExcludingIntersegmentElimination, ibm:GlobalBusinessServices



Period End2020-03-312019-03-31
Value41364155
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax6671.0921.3
Percentage of Revenues23.522.9
Percentage of Revenues ibm:OperatingSegmentsExcludingIntersegmentElimination ibm:GlobalBusinessServices100.0100.9

ibm:OperatingSegmentsExcludingIntersegmentElimination, ibm:GlobalTechnologyServices



Period End2020-03-312019-03-31
Value64676875
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax10430.61524.4
Percentage of Revenues36.837.8
Percentage of Revenues ibm:OperatingSegmentsExcludingIntersegmentElimination ibm:GlobalTechnologyServices100.0100.0

ibm:OperatingSegmentsExcludingIntersegmentElimination, ibm:Systems



Period End2020-03-312019-03-31
Value13681328
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax2206.5294.5
Percentage of Revenues7.87.3
Percentage of Revenues ibm:OperatingSegmentsExcludingIntersegmentElimination ibm:Systems100.0100.0

Sales Revenue Goods Net

Cost Of Revenue

us-gaap:CostOfRevenue



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-312009-09-302009-06-302009-03-31
Value964996921015110139995310804108251035310495103831021310536999910652984410423101381125111523123891194113383123411279212730130161350213555139841428213749132701291512880129381266912280
Percentage of CostOfRevenue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues54.953.853.055.853.154.056.854.154.457.253.152.153.548.351.150.151.846.751.450.853.148.352.051.354.452.652.454.953.553.655.954.754.456.454.954.556.6

us-gaap:ProductOrService

us-gaap:FinancialService



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-30
Value181217228264287290269322289
Percentage of CostOfRevenue1.92.22.22.62.92.72.53.12.8
Percentage of Revenues1.01.21.21.51.51.41.41.71.5
Percentage of Revenues us-gaap:FinancialService59.963.365.065.373.873.265.674.469.1

us-gaap:Product



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-31
Value1624163516511516162518691722158416641530
Percentage of CostOfRevenue16.816.916.315.016.317.315.915.315.914.7
Percentage of Revenues9.29.18.68.38.79.39.08.38.68.4
Percentage of Revenues us-gaap:Product27.527.325.628.328.027.830.226.326.328.3

us-gaap:TechnologyService



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-30
Value784378408272835980408645883582658368
Percentage of CostOfRevenue81.380.981.582.480.880.081.679.879.7
Percentage of Revenues44.643.543.246.042.943.246.343.243.4
Percentage of Revenues us-gaap:TechnologyService69.067.067.067.364.067.168.265.166.7

us-gaap:ProductOrService, us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:StatementEquityComponents

us-gaap:FinancialService, us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:AccumulatedGainLossNetCashFlowHedgeParent



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value8212529182018
Percentage of CostOfRevenue0.10.20.20.30.20.20.2
Percentage of Revenues0.00.10.10.20.10.10.1
Percentage of Revenues us-gaap:FinancialService us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome us-gaap:AccumulatedGainLossNetCashFlowHedgeParent0.00.00.00.00.00.00.0

us-gaap:Product, us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:AccumulatedGainLossNetCashFlowHedgeParent



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-30
Value-9-10-11-18-8617-1-10
Percentage of CostOfRevenue-0.1-0.1-0.1-0.2-0.10.10.2-0.0-0.1
Percentage of Revenues-0.1-0.1-0.1-0.1-0.00.00.1-0.0-0.1
Percentage of Revenues us-gaap:Product us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome us-gaap:AccumulatedGainLossNetCashFlowHedgeParent0.00.00.00.00.00.00.00.00.0

us-gaap:TechnologyService, us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:AccumulatedGainLossNetCashFlowHedgeParent



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-30
Value-10-22-20-10-1-9-19-20-18
Percentage of CostOfRevenue-0.1-0.2-0.2-0.1-0.0-0.1-0.2-0.2-0.2
Percentage of Revenues-0.1-0.1-0.1-0.1-0.0-0.0-0.1-0.1-0.1
Percentage of Revenues us-gaap:TechnologyService us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome us-gaap:AccumulatedGainLossNetCashFlowHedgeParent0.00.00.00.00.00.00.00.00.0

Cost Of Goods Sold

Cost Of Services

Gross Profit

us-gaap:GrossProfit



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-312009-09-302009-06-302009-03-31
Value792283369010804388039199824788008794777290139702868611406943610390945212862108741197510543143161138012132106781173212281111181217312385108581100110809997610627105819431
Percentage of GrossProfit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues45.146.247.044.246.946.043.245.945.642.846.947.946.551.748.949.948.253.348.649.246.951.748.048.745.647.447.645.146.546.444.145.345.643.645.145.543.4

Research And Development Expense

us-gaap:ResearchAndDevelopmentExpense



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-312009-09-302009-06-302009-03-31
Value1625155314071433125213641405134214841533139714651458136212871300129813201354145715011565146815481644153415871601154615691587146414751509144614341480
Percentage of ResearchAndDevelopmentExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues9.28.67.37.96.76.87.47.07.78.47.37.27.86.26.76.26.65.56.06.06.75.76.26.27.06.26.26.55.95.96.46.06.26.66.16.26.8

Selling General And Administrative Expense

us-gaap:SellingGeneralAndAdministrativeExpense



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-312009-09-302009-06-302009-03-31
Value5955502454564691436348575445464851605152473253496012515747315179536260345281560362895990525566805577590858375886566260305826514950615677501351155264
Percentage of SellingGeneralAndAdministrativeExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues33.927.928.525.823.324.328.524.326.828.424.626.432.223.424.524.927.425.023.623.028.021.622.226.823.823.922.623.921.622.623.721.221.324.821.322.024.2

us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:StatementEquityComponents

us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:AccumulatedGainLossNetCashFlowHedgeParent



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-30
Value-10-11-12-22-73186-8
Percentage of SellingGeneralAndAdministrativeExpense-0.2-0.2-0.2-0.5-0.20.10.30.1-0.2
Percentage of Revenues-0.1-0.1-0.1-0.1-0.00.00.10.0-0.0
Percentage of Revenues us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome us-gaap:AccumulatedGainLossNetCashFlowHedgeParent0.00.00.00.00.00.00.00.00.0

Interest Expense

us-gaap:InterestExpense



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-312009-09-302009-06-302009-03-31
Value326432348210191173165168147135158167147128117115108117126136105113979894124117110107979395908284101136
Percentage of InterestExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues1.92.41.81.21.00.90.90.90.80.70.80.80.80.60.60.60.60.50.60.60.50.40.40.40.40.50.50.40.40.40.40.40.40.40.40.40.6

us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:StatementEquityComponents

us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:AccumulatedGainLossNetCashFlowHedgeParent



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-30
Value2264523336381677
Percentage of InterestExpense6.714.814.915.718.822.09.74.24.8
Percentage of Revenues0.10.40.30.20.20.20.10.00.0
Percentage of Revenues us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome us-gaap:AccumulatedGainLossNetCashFlowHedgeParent0.00.00.00.00.00.00.00.00.0

Interest Expense Debt

us-gaap:IncomeStatementLocation

us-gaap:InterestExpenseDebt

ibm:CostOfFinancing



Period End2020-03-312019-03-312018-03-312017-03-31
Value119179182158
Percentage of InterestExpenseDebt100.0100.0100.0100.0
Percentage of Revenues0.71.01.00.9
Percentage of Revenues ibm:CostOfFinancing0.00.00.00.0

us-gaap:InterestExpense



Period End2020-03-312019-03-312018-03-312017-03-31
Value326210165135
Percentage of InterestExpenseDebt273.9117.390.785.4
Percentage of Revenues1.91.20.90.7
Percentage of Revenues us-gaap:InterestExpense0.00.00.00.0

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

Income Loss From Continuing Operations

us-gaap:IncomeLossFromContinuingOperations



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-31
Value1176167324991593269224021675272623321753285425052016
Percentage of IncomeLossFromContinuingOperations100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues6.79.313.08.814.412.08.814.212.19.714.812.410.8

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

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-30
Value-4915222768188329962776113630652443142432633049103450993621422430017095436151712980696248124144360650745161383650274885381746774575
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues-0.38.414.410.416.013.96.016.012.77.817.015.15.523.118.820.315.329.419.521.213.325.120.316.615.420.520.015.519.218.315.519.319.3

us-gaap:ConsolidationItems

us-gaap:CorporateNonSegment



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-30
Value-284-157-156-67-91-62-130-141-67-87-42-67-122-95-1442-481004-160-500-49-15-22-13-18453-36
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest579.6-10.3-5.6-3.6-3.0-2.2-11.4-4.6-2.7-6.1-1.3-2.2-11.8-1.9-0.41.0-1.614.2-3.7-1.00.0-0.7-0.3-0.5-0.40.08.9-0.7
Percentage of Revenues-1.6-0.9-0.8-0.4-0.5-0.3-0.7-0.7-0.3-0.5-0.2-0.3-0.7-0.4-0.10.2-0.24.2-0.7-0.20.0-0.2-0.1-0.1-0.10.01.8-0.1
Percentage of Revenues us-gaap:CorporateNonSegment0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:IntersegmentElimination



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-30
Value-55-84-60-89-116-291-218-126-161-227-185-334-355-565-380-508-406-481-402-507-524-482-280-379-339-248-322-343
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest112.2-5.5-2.2-4.7-3.9-10.5-19.2-4.1-6.6-15.9-5.7-11.0-34.3-11.1-10.5-12.0-13.5-6.8-9.2-9.8-17.6-6.9-5.8-9.1-9.40.0-6.3-6.6
Percentage of Revenues-0.3-0.5-0.3-0.5-0.6-1.5-1.1-0.7-0.8-1.3-1.0-1.7-1.9-2.6-2.0-2.4-2.1-2.0-1.8-2.1-2.3-1.7-1.2-1.5-1.40.0-1.3-1.3
Percentage of Revenues us-gaap:IntersegmentElimination3.65.54.25.37.917.413.79.111.615.212.621.421.60.023.729.420.625.919.823.925.022.615.0-19.717.712.116.3-17.9

us-gaap:OperatingSegments



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-30
Value10032661283624443801372820883876330223773897390118374387503368765195598338287964557949894435837853895814
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest-2046.9174.8102.5129.8126.9134.3183.8126.5135.2166.9119.4127.9177.7121.2119.296.9119.1115.7128.5114.4115.9120.4123.00.0106.2112.7
Percentage of Revenues5.714.814.813.420.318.610.920.217.113.120.319.39.822.824.228.523.224.617.028.823.520.018.90.021.822.5
Percentage of Revenues us-gaap:OperatingSegments5.313.714.112.618.817.210.118.916.012.118.918.09.121.122.426.621.322.715.626.821.918.717.626.820.321.1

us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, ibm:CloudAndCognitiveSoftware



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value933128320011767205020291680
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest-1904.184.372.393.868.473.1147.9
Percentage of Revenues5.37.110.49.710.910.18.8
Percentage of Revenues us-gaap:OperatingSegments ibm:CloudAndCognitiveSoftware15.421.532.030.135.732.327.8

us-gaap:OperatingSegments, ibm:GlobalBusinessServices



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-30
Value271573300315579385145453321291544476190708673656597733805832628940948623703841738803
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest-553.137.610.816.719.313.912.814.813.120.416.715.618.413.918.615.519.910.318.516.121.113.519.715.019.50.014.515.6
Percentage of Revenues1.53.21.61.73.11.90.82.41.71.62.82.41.03.23.53.23.03.03.63.42.83.44.02.53.00.03.03.1
Percentage of Revenues us-gaap:OperatingSegments ibm:GlobalBusinessServices6.513.77.17.513.89.03.410.87.77.112.710.94.516.015.614.713.416.417.517.813.619.120.013.015.117.215.616.6

us-gaap:OperatingSegments, ibm:GlobalFinancing



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-06-302012-06-30
Value194275239288308357377244282311355467386674562613515525475593596550528
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest-395.918.18.615.310.312.933.28.011.521.810.915.337.313.215.514.517.27.410.911.520.013.310.2
Percentage of Revenues1.11.51.21.61.61.82.01.31.51.71.82.32.13.12.92.92.62.22.12.42.72.22.0
Percentage of Revenues us-gaap:OperatingSegments ibm:GlobalFinancing38.042.637.840.842.441.245.235.040.040.546.550.443.155.454.551.949.146.943.849.952.851.851.2

us-gaap:OperatingSegments, ibm:GlobalTechnologyServices



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-30
Value-1784902352756074516614861274124899414641680185013451989189515141585202716971757
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest363.332.28.514.620.316.25.829.135.229.533.120.638.535.845.128.639.436.544.00.033.434.0
Percentage of Revenues-1.02.71.21.53.22.30.36.76.66.05.16.17.57.66.07.28.06.16.80.06.96.8
Percentage of Revenues us-gaap:OperatingSegments ibm:GlobalTechnologyServices-2.67.03.33.88.26.00.917.815.715.112.315.617.719.114.119.519.415.416.119.216.617.1

us-gaap:OperatingSegments, ibm:Systems



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-31
Value-2173961-202209346-20333974-186136229-10248538261
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest442.92.62.2-10.77.012.5-17.911.13.0-13.14.27.5-1.06.812.78.7
Percentage of Revenues-1.20.20.3-1.11.11.7-1.11.80.4-1.00.71.1-0.11.32.61.3
Percentage of Revenues us-gaap:OperatingSegments ibm:Systems-14.32.33.2-13.510.914.3-12.317.43.8-11.97.810.6-0.511.419.711.3

Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest

Income Loss From Continuing Operations Before Income Taxes Domestic

Income Loss From Continuing Operations Before Income Taxes Foreign

Income Tax Expense Benefit

us-gaap:IncomeTaxExpenseBenefit



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-312009-09-302009-06-302009-03-31
Value-1226-151269289304373-540339111-329409544-9836386596985851579906103459677877291857412511280769118812219541088119091411591159827
Percentage of IncomeTaxExpenseBenefit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues-7.0-0.81.41.61.61.9-2.81.80.6-1.82.12.7-5.32.93.43.43.06.54.04.22.72.83.33.72.55.15.03.14.54.63.94.55.04.04.95.03.8

us-gaap:IncomeStatementLocation, us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:StatementEquityComponents

ibm:CostOfFinancing, us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:AccumulatedGainLossNetCashFlowHedgeParent



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value-2-5-6-7-5-5-4
Percentage of IncomeTaxExpenseBenefit0.23.3-2.2-2.4-1.6-1.30.7
Percentage of Revenues-0.0-0.0-0.0-0.0-0.0-0.0-0.0
Percentage of Revenues ibm:CostOfFinancing us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome us-gaap:AccumulatedGainLossNetCashFlowHedgeParent0.00.00.00.00.00.00.0

ibm:CostOfServices, us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:AccumulatedGainLossNetCashFlowHedgeParent



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-30
Value265302587
Percentage of IncomeTaxExpenseBenefit-0.2-4.01.91.00.00.5-0.92.46.3
Percentage of Revenues0.00.00.00.00.00.00.00.00.0
Percentage of Revenues ibm:CostOfServices us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome us-gaap:AccumulatedGainLossNetCashFlowHedgeParent0.00.00.00.00.00.00.00.00.0

ibm:OtherIncomeExpense, us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:AccumulatedGainLossNetCashFlowHedgeParent



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-30
Value-22-11251-22-2-100262556
Percentage of IncomeTaxExpenseBenefit1.874.219.0-7.6-0.7-26.8-4.87.450.5
Percentage of Revenues-0.1-0.60.3-0.1-0.0-0.50.10.10.3
Percentage of Revenues ibm:OtherIncomeExpense us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome us-gaap:AccumulatedGainLossNetCashFlowHedgeParent0.00.00.00.00.00.00.00.00.0

us-gaap:CostOfSales, us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:AccumulatedGainLossNetCashFlowHedgeParent



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-30
Value23353-2-513
Percentage of IncomeTaxExpenseBenefit-0.2-2.01.11.71.0-0.50.90.32.7
Percentage of Revenues0.00.00.00.00.0-0.0-0.00.00.0
Percentage of Revenues us-gaap:CostOfSales us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome us-gaap:AccumulatedGainLossNetCashFlowHedgeParent0.00.00.00.00.00.00.00.00.0

us-gaap:InterestExpense, us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:AccumulatedGainLossNetCashFlowHedgeParent



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-30
Value-5-16-13-8-9-9-4-3-3
Percentage of IncomeTaxExpenseBenefit0.410.6-4.8-2.8-3.0-2.40.7-0.9-2.7
Percentage of Revenues-0.0-0.1-0.1-0.0-0.0-0.0-0.0-0.0-0.0
Percentage of Revenues us-gaap:InterestExpense us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome us-gaap:AccumulatedGainLossNetCashFlowHedgeParent0.00.00.00.00.00.00.00.00.0

us-gaap:SellingGeneralAndAdministrativeExpenses, us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:AccumulatedGainLossNetCashFlowHedgeParent



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-30
Value23362-1-5-12
Percentage of IncomeTaxExpenseBenefit-0.2-2.01.12.10.7-0.30.9-0.31.8
Percentage of Revenues0.00.00.00.00.0-0.0-0.0-0.00.0
Percentage of Revenues us-gaap:SellingGeneralAndAdministrativeExpenses us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome us-gaap:AccumulatedGainLossNetCashFlowHedgeParent0.00.00.00.00.00.00.00.00.0

Income Taxes Paid Net

Profit Loss

us-gaap:ProfitLoss



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-03-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-312009-09-302009-06-302009-03-31
Value117516722498159126942404167917502853250420144463295034492328548318413723846184404132263032382438813066383936642863358933862601321431032295
Percentage of ProfitLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues6.79.313.08.814.412.08.89.614.812.410.820.215.316.611.922.70.117.010.622.317.012.913.015.515.112.414.713.711.614.814.311.413.613.310.6

us-gaap:StatementEquityComponents

us-gaap:Parent



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-03-312016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-03-312012-03-312011-03-312010-03-31
Value11751672249815912694240416791750201444632950344923285483184137238461843032306628632601
Percentage of ProfitLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues6.79.313.08.814.412.08.89.610.820.215.316.611.922.70.117.010.622.313.012.411.611.4
Percentage of Revenues us-gaap:Parent0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:RetainedEarnings



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-03-312016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-03-312012-03-312011-03-312010-03-31
Value11751672249815912694240416791750201444632950344923285483184137238461843032306628632601
Percentage of ProfitLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues6.79.313.08.814.412.08.89.610.820.215.316.611.922.70.117.010.622.313.012.411.611.4
Percentage of Revenues us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Comprehensive Income Net Of Tax

us-gaap:ComprehensiveIncomeNetOfTax



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-31
Value489142728391899316426972109339428522438329328992622
Percentage of ComprehensiveIncomeNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues2.87.914.810.416.913.511.117.714.813.417.114.314.0

Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest

us-gaap:ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-03-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-312009-09-302009-06-30
Value48914272839189931642697210924383293289926223011222738602361-1414-59149232830955448442917332546013498383728504673348746213053325337703709
Percentage of ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues2.87.914.810.416.913.511.113.417.114.314.013.611.618.512.1-5.9-2.620.212.634.520.411.714.218.613.615.610.917.514.219.012.914.216.016.0

us-gaap:StatementEquityComponents

us-gaap:Parent



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-03-312016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-03-312012-03-312011-03-31
Value489142728391899316426972109243826223011222738602361-1414-591492328309554332538373487
Percentage of ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues2.87.914.810.416.913.511.113.414.013.611.618.512.1-5.9-2.620.212.634.514.215.614.2
Percentage of Revenues us-gaap:Parent0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Net Income Loss

us-gaap:NetIncomeLoss



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-31
Value1175167224981591269424041679272623311750285325042014
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues6.79.313.08.814.412.08.814.212.19.614.812.410.8

us-gaap:IncomeStatementLocation, us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:StatementEquityComponents

ibm:CostOfFinancing, us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:AccumulatedGainLossNetCashFlowHedgeParent



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value-6-15-18-22-14-15-13
Percentage of NetIncomeLoss-0.5-0.9-0.7-1.4-0.5-0.6-0.8
Percentage of Revenues-0.0-0.1-0.1-0.1-0.1-0.1-0.1
Percentage of Revenues ibm:CostOfFinancing us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome us-gaap:AccumulatedGainLossNetCashFlowHedgeParent0.00.00.00.00.00.00.0

ibm:CostOfServices, us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:AccumulatedGainLossNetCashFlowHedgeParent



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-30
Value71715717141211
Percentage of NetIncomeLoss0.61.00.60.40.00.30.80.40.5
Percentage of Revenues0.00.10.10.00.00.00.10.10.1
Percentage of Revenues ibm:CostOfServices us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome us-gaap:AccumulatedGainLossNetCashFlowHedgeParent0.00.00.00.00.00.00.00.00.0

ibm:OtherIncomeExpense, us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:AccumulatedGainLossNetCashFlowHedgeParent



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-30
Value-67-334151-65-6-297783990
Percentage of NetIncomeLoss-5.7-20.06.0-4.1-0.2-12.44.61.43.9
Percentage of Revenues-0.4-1.90.8-0.4-0.0-1.50.40.20.5
Percentage of Revenues ibm:OtherIncomeExpense us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome us-gaap:AccumulatedGainLossNetCashFlowHedgeParent0.00.00.00.00.00.00.00.00.0

us-gaap:CostOfSales, us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:AccumulatedGainLossNetCashFlowHedgeParent



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-30
Value678136-5-1218
Percentage of NetIncomeLoss0.50.40.30.80.2-0.2-0.70.00.3
Percentage of Revenues0.00.00.00.10.0-0.0-0.10.00.0
Percentage of Revenues us-gaap:CostOfSales us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome us-gaap:AccumulatedGainLossNetCashFlowHedgeParent0.00.00.00.00.00.00.00.00.0

us-gaap:InterestExpense, us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:AccumulatedGainLossNetCashFlowHedgeParent



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-30
Value-16-48-39-24-27-28-12-4-4
Percentage of NetIncomeLoss-1.4-2.9-1.6-1.5-1.0-1.2-0.7-0.1-0.2
Percentage of Revenues-0.1-0.3-0.2-0.1-0.1-0.1-0.1-0.0-0.0
Percentage of Revenues us-gaap:InterestExpense us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome us-gaap:AccumulatedGainLossNetCashFlowHedgeParent0.00.00.00.00.00.00.00.00.0

us-gaap:SellingGeneralAndAdministrativeExpenses, us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:AccumulatedGainLossNetCashFlowHedgeParent



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-30
Value789165-2-13-46
Percentage of NetIncomeLoss0.60.50.41.00.2-0.1-0.8-0.10.3
Percentage of Revenues0.00.00.00.10.0-0.0-0.1-0.00.0
Percentage of Revenues us-gaap:SellingGeneralAndAdministrativeExpenses us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome us-gaap:AccumulatedGainLossNetCashFlowHedgeParent0.00.00.00.00.00.00.00.00.0

Net Income Loss Available To Common Stockholders Basic

us-gaap:NetIncomeLossAvailableToCommonStockholdersBasic



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-30
Value11751672249815912694240416792726233117502853
Percentage of NetIncomeLossAvailableToCommonStockholdersBasic100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues6.79.313.08.814.412.08.814.212.19.614.8

Net Income Loss Available To Common Stockholders Diluted

us-gaap:NetIncomeLossAvailableToCommonStockholdersDiluted



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-30
Value11731672249915912694240316792726233017502853
Percentage of NetIncomeLossAvailableToCommonStockholdersDiluted100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues6.79.313.08.814.412.08.814.212.19.614.8

Net Income Loss Attributable To Noncontrolling Interest

us-gaap:IncomeStatementLocation

us-gaap:NetIncomeLossAttributableToNoncontrollingInterest

ibm:OtherIncomeExpense



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-31
Value4747637433331221
Percentage of NetIncomeLossAttributableToNoncontrollingInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of Revenues ibm:OtherIncomeExpense0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Assets

us-gaap:Assets



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312008-12-31
Value153403152186149620154652130926123382121990121622125285125356121636120495117495117470115606118056118856110495108649112729112037117532118911124314122646126223117845115153117258119213115778113832115347116433110158113474112960113452107174103420105208109022109524
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ConsolidationItems

us-gaap:IntersegmentElimination



Period End2019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value-4317-7143-6272-5670-4709-5193-4740-4943-5407
Percentage of Assets-2.8-5.8-5.0-4.8-4.3-4.4-3.8-4.1-4.6
Percentage of Assets-2.8-5.8-5.0-4.8-4.3-4.4-3.8-4.1-4.6
Percentage of Assets us-gaap:IntersegmentElimination100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:MaterialReconcilingItems



Period End2019-12-312018-12-312017-12-31
Value189425752285
Percentage of Assets1.22.11.8
Percentage of Assets1.22.11.8
Percentage of Assets us-gaap:MaterialReconcilingItems100.0100.0100.0

us-gaap:OperatingSegments



Period End2019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value1250871026221031559853491999939331015589731091557
Percentage of Assets82.283.282.383.983.379.980.581.678.6
Percentage of Assets82.283.282.383.983.379.980.581.678.6
Percentage of Assets us-gaap:OperatingSegments100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, ibm:CloudAndCognitiveSoftware



Period End2019-12-312018-12-312017-12-31
Value584532871329650
Percentage of Assets38.423.323.7
Percentage of Assets38.423.323.7
Percentage of Assets us-gaap:OperatingSegments ibm:CloudAndCognitiveSoftware100.0100.0100.0

us-gaap:OperatingSegments, ibm:GlobalBusinessServices



Period End2019-12-312018-12-312017-12-312016-12-312015-12-312014-12-31
Value1003984048713862883278831
Percentage of Assets6.66.87.07.37.57.5
Percentage of Assets6.66.87.07.37.57.5
Percentage of Assets us-gaap:OperatingSegments ibm:GlobalBusinessServices100.0100.0100.0100.0100.0100.0

us-gaap:OperatingSegments, ibm:GlobalFinancing



Period End2019-12-312018-12-312017-12-312016-12-312015-12-312014-12-31
Value295684132041096364923615738845
Percentage of Assets19.433.532.831.132.733.1
Percentage of Assets19.433.532.831.132.733.1
Percentage of Assets us-gaap:OperatingSegments ibm:GlobalFinancing100.0100.0100.0100.0100.0100.0

us-gaap:OperatingSegments, ibm:GlobalTechnologyServices



Period End2019-12-312018-12-312017-12-31
Value224361762417577
Percentage of Assets14.714.314.0
Percentage of Assets14.714.314.0
Percentage of Assets us-gaap:OperatingSegments ibm:GlobalTechnologyServices100.0100.0100.0

us-gaap:OperatingSegments, ibm:Systems



Period End2019-12-312018-12-312017-12-312016-12-312015-12-312014-12-31
Value459040303898381239674219
Percentage of Assets3.03.33.13.23.63.6
Percentage of Assets3.03.33.13.23.63.6
Percentage of Assets us-gaap:OperatingSegments ibm:Systems100.0100.0100.0100.0100.0100.0

Liabilities

us-gaap:Liabilities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312008-12-31
Value1332751312021315241368761143201064521020711029741069951076311018791019519904799078984471021671037849607195198988929974710551810451510680110590610329497837972699804410022994112932699456396197877819026390185902798481582244830598626795939
Percentage of Liabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets86.986.287.988.587.386.383.784.785.485.983.884.684.384.385.286.587.386.987.687.789.089.887.985.986.481.883.084.583.684.181.381.982.082.679.779.579.879.679.179.578.979.187.6

Liabilities And Stockholders Equity

us-gaap:LiabilitiesAndStockholdersEquity



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312008-12-31
Value153403152186149620154652130926123382121990121622125285125356121636120495117495117470115606118056118856110495108649112729112037117532118911124314122646126223117845115153117258119213115778113832115347116433110158113474112960113452107174103420105208109022109524
Percentage of LiabilitiesAndStockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Stockholders Equity

us-gaap:StockholdersEquity



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312008-12-31
Value19999208411795617645164811679619784185201816617594196271841918327182461701015733149251426213294136841214111868142551737716607227921987717756190921886021541204722070120138222912312722671230462223821059220332263713465
Percentage of StockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets13.013.712.011.412.613.616.215.214.514.016.115.315.615.514.713.312.612.912.212.110.810.112.014.013.518.116.915.416.315.818.618.017.917.320.220.420.120.320.720.420.920.812.3

Assets Current

us-gaap:AssetsCurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312008-12-31
Value38931384203812177517527054914648257467954912249735447424501342889438884143343524476234250442112451864631649422471634818247959513504753347911489494943348141473924884750928453734693747524481164446944895456974893549004
Percentage of AssetsCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets25.425.225.550.140.339.839.638.539.239.736.837.436.537.435.836.940.138.538.840.141.342.039.738.839.140.740.341.641.741.541.641.642.343.741.241.442.142.441.543.443.444.944.7

Cash And Cash Equivalents At Carrying Value

us-gaap:CashAndCashEquivalentsAtCarryingValue



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-09-302009-06-302009-03-312008-12-312007-12-312006-12-31
Value112188172100874539917134113791156310741119491197210915116961009678269039100171435476869480839387968476956197159409107161007295581058510412119091086411835119221130311714127631066198591032512472121839532116781229412741149918022
Percentage of CashAndCashEquivalentsAtCarryingValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets7.35.46.729.413.19.29.58.89.59.69.09.78.66.77.88.512.17.08.77.47.97.28.07.87.78.58.58.39.08.710.39.510.310.210.310.311.39.49.210.011.911.20.00.00.011.60.00.0

Accounts Receivable Net Current

us-gaap:AccountsReceivableNetCurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312018-01-012017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value69277870675374146987743270717445777882958928815084018377918282918782852783337987863288069090912299029682104659865102771008410667977210172100121117997191053910834
Percentage of AccountsReceivableNetCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets4.55.24.54.85.36.05.86.16.20.07.16.77.07.17.87.27.47.27.57.47.77.97.77.78.07.98.38.48.98.68.98.48.98.79.68.89.39.5

Inventory Net

us-gaap:InventoryNet



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312008-12-31
Value1786161917121745177116821893174217531583171116041609155317291685169015511613191219702103235623382456231024922389242122872586275827542595266325732549245026292595252424942701
Percentage of InventoryNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets1.21.11.11.11.41.41.61.41.41.31.41.31.41.31.51.41.41.41.51.71.81.82.01.92.01.82.12.12.11.92.22.42.42.22.42.32.32.22.52.52.42.32.5

Inventory Finished Goods

Prepaid Expense And Other Assets Current

us-gaap:PrepaidExpenseAndOtherAssetsCurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value2509210125152409247823782388244325733942438941554715456445394676433442054158447058904967502242634430448847234746474740245016511352995249517246624226
Percentage of PrepaidExpenseAndOtherAssetsCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets1.61.41.71.61.91.92.02.02.13.13.63.44.03.93.94.03.63.83.84.05.34.24.23.43.63.64.04.14.03.44.34.54.64.54.74.13.7

Property Plant And Equipment Gross

us-gaap:PropertyPlantAndEquipmentGross



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312008-12-31
Value31089320283167031843326923246032484322333277532331319373129130681301333084230136296272934229229386393830339034399504093640478404754080839552400564050140716401584044140124401394112640765402893993638292390183959638445
Percentage of PropertyPlantAndEquipmentGross100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets20.321.021.220.625.026.326.626.526.225.826.326.026.125.726.725.524.926.626.934.334.233.233.632.933.032.134.634.334.234.035.235.335.134.536.436.236.135.537.337.037.136.335.1

us-gaap:PropertyPlantAndEquipmentByType

ibm:BuildingsAndImprovements



Period End2019-12-312018-12-312017-12-312016-12-31
Value93649640100739763
Percentage of PropertyPlantAndEquipmentGross29.229.731.232.4
Percentage of Assets6.27.88.08.3
Percentage of Assets ibm:BuildingsAndImprovements0.00.00.00.0

ibm:OtherMachineryEquipmentFurnitureAndFixtures



Period End2019-12-312018-12-312017-12-312016-12-31
Value3721408140603869
Percentage of PropertyPlantAndEquipmentGross11.612.612.612.8
Percentage of Assets2.43.33.23.3
Percentage of Assets ibm:OtherMachineryEquipmentFurnitureAndFixtures0.00.00.00.0

ibm:PropertyPlantAndEquipmentExcludingRentalMachines



Period End2019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value31504316363148729150282263757838555380883716036867
Percentage of PropertyPlantAndEquipmentGross98.497.597.496.796.296.395.394.092.691.5
Percentage of Assets20.725.625.124.825.532.030.531.931.932.5
Percentage of Assets ibm:PropertyPlantAndEquipmentExcludingRentalMachines0.00.00.00.00.00.00.00.00.00.0

us-gaap:EquipmentLeasedToOtherParty



Period End2019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-31
Value5238248449841115145619202414296434223656
Percentage of PropertyPlantAndEquipmentGross1.62.52.63.33.83.74.76.07.48.59.2
Percentage of Assets0.30.70.70.81.01.21.52.02.53.03.4
Percentage of Assets us-gaap:EquipmentLeasedToOtherParty0.00.00.00.00.00.00.00.00.00.00.0

us-gaap:LandAndLandImprovements



Period End2019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-31
Value365448480506558667706747786777737
Percentage of PropertyPlantAndEquipmentGross1.11.41.51.71.91.71.71.82.01.91.9
Percentage of Assets0.20.40.40.40.50.60.60.60.70.70.7
Percentage of Assets us-gaap:LandAndLandImprovements0.00.00.00.00.00.00.00.00.00.00.0

us-gaap:TechnologyEquipment



Period End2019-12-312018-12-312017-12-312016-12-31
Value18054174681687415012
Percentage of PropertyPlantAndEquipmentGross56.453.852.249.8
Percentage of Assets11.914.213.512.8
Percentage of Assets us-gaap:TechnologyEquipment0.00.00.00.0

Accumulated Depreciation Depletion And Amortization Property Plant And Equipment

us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312008-12-31
Value21464220182160821641220172166821535212092149721215208802038819816193031973819044187171861518568279362779328263288822718826795266542693126196264592650526688262932649626241262522688726557261932592724758251782543124140
Percentage of AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets14.014.514.414.016.817.617.717.417.216.917.216.916.916.417.116.115.716.817.124.824.824.024.321.921.821.122.922.722.622.223.123.123.022.523.823.723.523.124.223.923.923.322.0

us-gaap:PropertyPlantAndEquipmentByType

ibm:PropertyPlantAndEquipmentExcludingRentalMachines



Period End2019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value21726212762083218842180512750025576252342470324435
Percentage of AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment98.798.298.297.697.097.396.095.294.193.3
Percentage of Assets14.317.216.616.016.323.420.321.221.221.5
Percentage of Assets ibm:PropertyPlantAndEquipmentExcludingRentalMachines0.00.00.00.00.00.00.00.00.00.0

us-gaap:EquipmentLeasedToOtherParty



Period End2019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-31
Value29239238346156576310781271153817581946
Percentage of AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment1.31.81.82.43.02.74.04.85.96.77.7
Percentage of Assets0.20.30.30.40.50.60.91.11.31.51.8
Percentage of Assets us-gaap:EquipmentLeasedToOtherParty0.00.00.00.00.00.00.00.00.00.00.0

Property Plant And Equipment Net

us-gaap:PropertyPlantAndEquipmentNet



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312008-12-31
Value9626100101006310202106751079210949110241127811116110571090310865108301110411092109101072710661107021050910771110681374813683138211387713356135971399614027138651394613883138871423914208140961400913534138411416514305
Percentage of PropertyPlantAndEquipmentNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets6.36.66.76.68.28.79.09.19.08.99.19.09.29.29.69.49.29.79.89.59.49.29.311.111.210.911.811.611.611.712.112.212.111.912.612.512.612.413.113.113.213.013.1

us-gaap:ConsolidationItems

ibm:CorporateAndReconcilingItems



Period End2019-12-312018-12-312017-12-312016-12-312015-12-312014-12-31
Value233424632659265626502169
Percentage of PropertyPlantAndEquipmentNet23.322.823.924.524.720.1
Percentage of Assets1.52.02.12.32.41.8
Percentage of Assets ibm:CorporateAndReconcilingItems0.00.00.00.00.00.0

us-gaap:PropertyPlantAndEquipmentByType

ibm:PropertyPlantAndEquipmentExcludingRentalMachines



Period End2019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value9778103591065510308101761007812979128541245712432
Percentage of PropertyPlantAndEquipmentNet97.796.095.995.294.993.693.991.889.788.2
Percentage of Assets6.48.48.58.89.28.610.310.810.711.0
Percentage of Assets ibm:PropertyPlantAndEquipmentExcludingRentalMachines0.00.00.00.00.00.00.00.00.00.0

us-gaap:EquipmentLeasedToOtherParty



Period End2019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-31
Value2324334625235516938421142142616651710
Percentage of PropertyPlantAndEquipmentNet2.34.04.24.85.16.46.18.210.311.812.1
Percentage of Assets0.20.40.40.40.50.60.71.01.21.51.6
Percentage of Assets us-gaap:EquipmentLeasedToOtherParty0.00.00.00.00.00.00.00.00.00.00.0

us-gaap:StatementGeographical, us-gaap:ConcentrationRiskByBenchmark, us-gaap:ConcentrationRiskByType, us-gaap:PropertyPlantAndEquipmentByType

country:US, us-gaap:PropertyPlantAndEquipment, us-gaap:GeographicConcentrationRisk, ibm:PropertyPlantAndEquipmentExcludingRentalMachines



Period End2019-12-312018-12-312017-12-312016-12-31
Value4485458546704701
Percentage of PropertyPlantAndEquipmentNet44.842.542.043.4
Percentage of Assets2.93.73.74.0
Percentage of Assets country:US us-gaap:PropertyPlantAndEquipment us-gaap:GeographicConcentrationRisk ibm:PropertyPlantAndEquipmentExcludingRentalMachines0.00.00.00.0

us-gaap:NonUs, us-gaap:PropertyPlantAndEquipment, us-gaap:GeographicConcentrationRisk, ibm:PropertyPlantAndEquipmentExcludingRentalMachines



Period End2019-12-312018-12-312017-12-312016-12-31
Value5294577459855607
Percentage of PropertyPlantAndEquipmentNet52.953.553.851.8
Percentage of Assets3.54.74.84.8
Percentage of Assets us-gaap:NonUs us-gaap:PropertyPlantAndEquipment us-gaap:GeographicConcentrationRisk ibm:PropertyPlantAndEquipmentExcludingRentalMachines0.00.00.00.0

Goodwill

us-gaap:Goodwill



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312008-12-31
Value57517582225795135284362813626536526364823673236788367823651736307361993640136422343223202130275305352987130556310453156831214311843088228846290252924728270277352746826213249132560925408251362270320544208892019018226
Percentage of Goodwill100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets37.538.338.722.827.729.429.930.029.329.330.230.330.930.831.530.928.929.027.927.126.726.026.125.425.524.726.225.124.824.524.424.423.822.522.622.622.522.221.219.919.918.516.6

us-gaap:BusinessAcquisition

ibm:RedHat



Period End2020-03-312019-12-312019-09-302019-07-09
Value23100231002310023102
Percentage of Goodwill40.239.739.90.0
Percentage of Assets15.115.215.40.0
Percentage of Assets ibm:RedHat0.00.00.00.0

us-gaap:BusinessAcquisition, us-gaap:StatementBusinessSegments

ibm:RedHat, ibm:CloudAndCognitiveSoftware



Period End2020-03-312019-12-312019-09-30
Value185001850018400
Percentage of Goodwill32.231.831.8
Percentage of Assets12.112.212.3
Percentage of Assets ibm:RedHat ibm:CloudAndCognitiveSoftware0.00.00.0

ibm:RedHat, ibm:Systems



Period End2020-03-312019-12-312019-09-30
Value400400500
Percentage of Goodwill0.70.70.9
Percentage of Assets0.30.30.3
Percentage of Assets ibm:RedHat ibm:Systems0.00.00.0

us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, ibm:CloudAndCognitiveSoftware



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value42620430374281924683246252459424973
Percentage of Goodwill74.173.973.970.067.967.867.9
Percentage of Assets27.828.328.616.018.819.919.9
Percentage of Assets us-gaap:OperatingSegments ibm:CloudAndCognitiveSoftware0.073.60.00.00.085.784.2

us-gaap:OperatingSegments, ibm:GlobalBusinessServices



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value5672577556944718470847114782
Percentage of Goodwill9.99.99.813.413.013.013.0
Percentage of Assets3.73.83.83.13.63.83.8
Percentage of Assets us-gaap:OperatingSegments ibm:GlobalBusinessServices0.057.50.00.00.056.154.9

us-gaap:OperatingSegments, ibm:GlobalTechnologyServices



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value6974714170664027400339884044
Percentage of Goodwill12.112.312.211.411.011.011.0
Percentage of Assets4.54.74.72.63.13.23.2
Percentage of Assets us-gaap:OperatingSegments ibm:GlobalTechnologyServices0.031.80.00.00.022.623.0

us-gaap:OperatingSegments, ibm:Systems



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value2251227023721855185118471862
Percentage of Goodwill3.93.94.15.35.15.15.1
Percentage of Assets1.51.51.61.21.41.51.5
Percentage of Assets us-gaap:OperatingSegments ibm:Systems0.049.50.00.00.045.847.8

Intangible Assets Net Excluding Goodwill

Finite Lived Intangible Assets Net

us-gaap:FiniteLivedIntangibleAssetsNet



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302015-12-31
Value14666152351561327282956308731343344352137423981417944364688488151483487
Percentage of FiniteLivedIntangibleAssetsNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets9.610.010.41.82.32.52.62.72.83.03.33.53.84.04.24.43.2

us-gaap:FiniteLivedIntangibleAssetsByMajorClass

ibm:PatentsAndTrademarks



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302015-12-31
Value180418561890263287311337363387413440468496525540572193
Percentage of FiniteLivedIntangibleAssetsNet12.312.212.19.69.710.110.810.911.011.011.111.211.211.211.111.15.5
Percentage of Assets1.21.21.30.20.20.30.30.30.30.30.40.40.40.40.50.50.2
Percentage of Assets ibm:PatentsAndTrademarks0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:ComputerSoftwareIntangibleAsset



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302015-12-31
Value9971006985953982939788796794810835856865876882882767
Percentage of FiniteLivedIntangibleAssetsNet6.86.66.334.933.230.425.123.822.621.621.020.519.518.718.117.122.0
Percentage of Assets0.60.70.70.60.80.80.60.70.60.60.70.70.70.70.80.70.7
Percentage of Assets us-gaap:ComputerSoftwareIntangibleAsset0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:CustomerRelationships



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302015-12-31
Value7185748876847828729451026111311941278136313981497160216681769929
Percentage of FiniteLivedIntangibleAssetsNet49.049.149.228.729.530.632.733.333.934.234.233.533.734.234.234.426.6
Percentage of Assets4.74.95.10.50.70.80.80.91.01.01.11.21.31.41.41.50.8
Percentage of Assets us-gaap:CustomerRelationships0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:DevelopedTechnologyRights



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302015-12-31
Value4658486150277017848609491037111712101310142415421654175918941563
Percentage of FiniteLivedIntangibleAssetsNet31.831.932.225.726.527.930.331.031.732.332.934.134.835.336.036.844.8
Percentage of Assets3.03.23.40.50.60.70.80.90.91.01.11.21.31.41.51.61.4
Percentage of Assets us-gaap:DevelopedTechnologyRights0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:OtherIntangibleAssets



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302015-12-31
Value2224262830323436303132343531323235
Percentage of FiniteLivedIntangibleAssetsNet0.20.20.21.01.01.01.11.10.90.80.80.80.80.70.70.61.0
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:OtherIntangibleAssets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Other Assets Noncurrent

Liabilities Current

us-gaap:LiabilitiesCurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312008-12-31
Value40673377013506642351388713822736822354423573337363316973596636481362753444733585346643426933732355353564039600423064243341058401543922241037421224362539499389033820942123360283984340387405623544334993345753600242435
Percentage of LiabilitiesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets26.524.823.427.429.731.030.229.128.529.826.129.831.030.929.828.429.231.031.031.531.833.735.634.133.531.833.335.635.936.634.134.233.136.232.735.135.835.833.133.832.933.038.7

Debt Current

Long Term Debt Current

Accounts Payable Current

us-gaap:AccountsPayableCurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312008-12-31
Value4172489640424724571165585384551857366451544251265324620952715484530260285166594363146864585562716865746162636821720379527085748274168517709371126747780470847233634574367014
Percentage of AccountsPayableCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets2.73.22.73.14.45.34.44.54.65.14.54.34.55.34.64.64.55.54.85.35.65.84.95.05.65.95.35.96.16.76.16.66.47.36.46.36.06.96.67.06.06.86.4

Taxes Payable Current

us-gaap:TaxesPayableCurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312008-12-31
Value2348283921542439248430462502278029184219303827792747323521372275220328472883363935395084247523352245463347464708467849482147218321843313236023632531421629082895277538262743
Percentage of TaxesPayableCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets1.51.91.41.61.92.52.12.32.33.42.52.32.32.81.81.91.92.62.73.23.24.32.11.91.83.74.04.14.04.21.91.91.92.82.12.12.23.72.72.82.63.52.5

Other Liabilities Current

Long Term Debt

us-gaap:DebtInstrument, us-gaap:SubsequentEventType

us-gaap:LongTermDebt

ibm:FixedRateDebtDueIn2021, us-gaap:SubsequentEvent



Period End2020-02-03
Value2900
Percentage of LongTermDebt100.0
Percentage of Assets0.0
Percentage of Assets ibm:FixedRateDebtDueIn2021 us-gaap:SubsequentEvent0.0

Long Term Debt Noncurrent

us-gaap:LongTermDebtNoncurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312010-12-31
Value5268554102577975844539727356053598937851404103983741327376123444134655355633963840254334283212233339342953507332821340083466832856284782629224672240882433324766257602285721846
Percentage of LongTermDebtNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets34.335.538.637.830.328.929.531.132.331.834.031.229.329.530.833.633.930.329.629.630.629.827.627.428.326.024.222.821.020.221.021.822.319.619.3

Deferred Tax Liabilities Noncurrent

Pension And Other Postretirement Defined Benefit Plans Liabilities Noncurrent

us-gaap:PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312008-12-31
Value16474171421592516471164671700215774159631675016720175541732016967170701668816723169391650417012172981721118261150931598416031162421799417962190692041816682165441757918374153751601415995159781514514598152161595319452
Percentage of PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets10.711.310.610.712.613.812.913.113.413.314.414.414.414.514.414.214.314.915.715.315.415.512.712.913.112.915.315.616.317.114.414.515.215.814.014.114.214.114.114.114.514.617.8

us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType

country:US, us-gaap:OtherPostretirementBenefitPlansDefinedBenefit



Period End2019-12-312018-12-312017-12-312016-12-31
Value3507354238124076
Percentage of PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent20.520.822.823.9
Percentage of Assets2.32.93.03.5
Percentage of Assets country:US us-gaap:OtherPostretirementBenefitPlansDefinedBenefit0.00.00.00.0

country:US, us-gaap:PensionPlansDefinedBenefit



Period End2019-12-312018-12-312017-12-312016-12-31
Value1641154817221698
Percentage of PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent9.69.110.39.9
Percentage of Assets1.11.31.41.4
Percentage of Assets country:US us-gaap:PensionPlansDefinedBenefit0.00.00.00.0

us-gaap:ForeignPlan, us-gaap:OtherPostretirementBenefitPlansDefinedBenefit



Period End2019-12-312018-12-312017-12-312016-12-31
Value752605646607
Percentage of PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent4.43.63.93.6
Percentage of Assets0.50.50.50.5
Percentage of Assets us-gaap:ForeignPlan us-gaap:OtherPostretirementBenefitPlansDefinedBenefit0.00.00.00.0

us-gaap:ForeignPlan, us-gaap:PensionPlansDefinedBenefit



Period End2019-12-312018-12-312017-12-312016-12-31
Value11242113061054110689
Percentage of PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent65.666.563.062.6
Percentage of Assets7.49.28.49.1
Percentage of Assets us-gaap:ForeignPlan us-gaap:PensionPlansDefinedBenefit0.00.00.00.0

Minority Interest

us-gaap:MinorityInterest



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312008-12-31
Value1291441391311261341341281241311301251211461491561471621571531481461401361331371311271221241269282978784104126121117116118119
Percentage of MinorityInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.1

Other Liabilities Noncurrent

us-gaap:OtherLiabilitiesNoncurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312008-12-31
Value158741452615564121901218412174997910000102509965772374377601747781388385826480998739882787918892106131022410106993480577812777176079335916691128996865488518330822688428295850688198192
Percentage of OtherLiabilitiesNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets10.39.510.47.99.39.98.28.28.27.96.36.26.56.47.07.17.07.38.07.87.87.68.98.28.27.96.86.86.66.48.18.17.97.77.97.87.47.38.38.08.18.17.5

Stockholders Equity

us-gaap:StockholdersEquity



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312008-12-31
Value19999208411795617645164811679619784185201816617594196271841918327182461701015733149251426213294136841214111868142551737716607227921987717756190921886021541204722070120138222912312722671230462223821059220332263713465
Percentage of StockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets13.013.712.011.412.613.616.215.214.514.016.115.315.615.514.713.312.612.912.212.110.810.112.014.013.518.116.915.416.315.818.618.017.917.320.220.420.120.320.720.420.920.812.3

Retained Earnings Accumulated Deficit

us-gaap:RetainedEarningsAccumulatedDeficit



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312008-12-31
Value1626261629541607091604671593961592061586121573491563711531261555651542341532921527591495851480711468881461241428981412181390301377931334031344831314311300421248851218831197131176411127731099281070361048571002669733494590925328809585323827838090070353
Percentage of RetainedEarningsAccumulatedDeficit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets106.0107.1107.4103.8121.7129.0130.0129.4124.8122.2127.9128.0130.5130.0129.4125.4123.6132.2131.5125.3124.1117.2112.2108.2107.2103.0106.0105.8102.198.797.496.692.890.191.085.883.781.682.282.578.774.264.2

us-gaap:Restatement, us-gaap:AdjustmentsForNewAccountingPronouncements

srt:RestatementAdjustment, us-gaap:AccountingStandardsUpdate201613



Period End2020-01-01
Value-66
Percentage of RetainedEarningsAccumulatedDeficit0.0
Percentage of Assets0.0
Percentage of Assets srt:RestatementAdjustment us-gaap:AccountingStandardsUpdate2016130.0

us-gaap:Restatement, us-gaap:AdjustmentsForNewAccountingPronouncements, us-gaap:SubsequentEventType

srt:RestatementAdjustment, us-gaap:AccountingStandardsUpdate201613, us-gaap:SubsequentEvent



Period End2020-01-01
Value-65
Percentage of RetainedEarningsAccumulatedDeficit0.0
Percentage of Assets0.0
Percentage of Assets srt:RestatementAdjustment us-gaap:AccountingStandardsUpdate201613 us-gaap:SubsequentEvent0.0

Treasury Stock Value

Accumulated Other Comprehensive Income Loss Net Of Tax

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312008-12-31
Value-29283-28597-29086-28841-29182-29490-27820-28290-28583-26592-27521-28189-28710-29398-28164-28604-28998-29607-28155-27432-27842-27875-20978-20369-21156-21602-24971-25774-25466-25759-20720-21498-21115-21885-18099-17109-18119-18743-17479-18510-18178-18830-21845
Percentage of AccumulatedOtherComprehensiveIncomeLossNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets-19.1-18.8-19.4-18.6-22.3-23.9-22.8-23.3-22.8-21.2-22.6-23.4-24.4-25.0-24.4-24.2-24.4-26.8-25.9-24.3-24.9-23.7-17.6-16.4-17.2-17.1-21.2-22.4-21.7-21.6-17.9-18.9-18.3-18.8-16.4-15.1-16.0-16.5-16.3-17.9-17.3-17.3-19.9

Net Cash Provided By Used In Operating Activities

us-gaap:NetCashProvidedByUsedInOperatingActivities



Period End2020-03-312019-03-312018-03-312017-03-312016-03-312011-03-312010-03-312009-03-31
Value44764759460239555530379244374386
Percentage of NetCashProvidedByUsedInOperatingActivities100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues25.526.224.121.829.615.419.420.2

Net Cash Provided By Used In Investing Activities

us-gaap:NetCashProvidedByUsedInInvestingActivities



Period End2020-03-312019-03-312018-03-312017-03-312016-03-312011-03-312010-03-312009-03-31
Value-902-853-1764350-1886498-699-48
Percentage of NetCashProvidedByUsedInInvestingActivities100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues-5.1-4.7-9.21.9-10.12.0-3.1-0.2

Net Cash Provided By Used In Financing Activities

us-gaap:NetCashProvidedByUsedInFinancingActivities



Period End2020-03-312019-03-312018-03-312017-03-312016-03-312011-03-312010-03-312009-03-31
Value-1151863-2909-21342806-2314-3368-4583
Percentage of NetCashProvidedByUsedInFinancingActivities100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues-0.710.2-15.3-11.815.0-9.4-14.7-21.1

Net Cash Provided By Used In Operating Activities

us-gaap:NetCashProvidedByUsedInOperatingActivities



Period End2020-03-312019-03-312018-03-312017-03-312016-03-312011-03-312010-03-312009-03-31
Value44764759460239555530379244374386
Percentage of NetCashProvidedByUsedInOperatingActivities100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues25.526.224.121.829.615.419.420.2

Net Income Loss

us-gaap:NetIncomeLoss



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-31
Value1175167224981591269424041679272623311750285325042014
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues6.79.313.08.814.412.08.814.212.19.614.812.410.8

us-gaap:IncomeStatementLocation, us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:StatementEquityComponents

ibm:CostOfFinancing, us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:AccumulatedGainLossNetCashFlowHedgeParent



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value-6-15-18-22-14-15-13
Percentage of NetIncomeLoss-0.5-0.9-0.7-1.4-0.5-0.6-0.8
Percentage of Revenues-0.0-0.1-0.1-0.1-0.1-0.1-0.1
Percentage of Revenues ibm:CostOfFinancing us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome us-gaap:AccumulatedGainLossNetCashFlowHedgeParent0.00.00.00.00.00.00.0

ibm:CostOfServices, us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:AccumulatedGainLossNetCashFlowHedgeParent



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-30
Value71715717141211
Percentage of NetIncomeLoss0.61.00.60.40.00.30.80.40.5
Percentage of Revenues0.00.10.10.00.00.00.10.10.1
Percentage of Revenues ibm:CostOfServices us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome us-gaap:AccumulatedGainLossNetCashFlowHedgeParent0.00.00.00.00.00.00.00.00.0

ibm:OtherIncomeExpense, us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:AccumulatedGainLossNetCashFlowHedgeParent



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-30
Value-67-334151-65-6-297783990
Percentage of NetIncomeLoss-5.7-20.06.0-4.1-0.2-12.44.61.43.9
Percentage of Revenues-0.4-1.90.8-0.4-0.0-1.50.40.20.5
Percentage of Revenues ibm:OtherIncomeExpense us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome us-gaap:AccumulatedGainLossNetCashFlowHedgeParent0.00.00.00.00.00.00.00.00.0

us-gaap:CostOfSales, us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:AccumulatedGainLossNetCashFlowHedgeParent



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-30
Value678136-5-1218
Percentage of NetIncomeLoss0.50.40.30.80.2-0.2-0.70.00.3
Percentage of Revenues0.00.00.00.10.0-0.0-0.10.00.0
Percentage of Revenues us-gaap:CostOfSales us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome us-gaap:AccumulatedGainLossNetCashFlowHedgeParent0.00.00.00.00.00.00.00.00.0

us-gaap:InterestExpense, us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:AccumulatedGainLossNetCashFlowHedgeParent



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-30
Value-16-48-39-24-27-28-12-4-4
Percentage of NetIncomeLoss-1.4-2.9-1.6-1.5-1.0-1.2-0.7-0.1-0.2
Percentage of Revenues-0.1-0.3-0.2-0.1-0.1-0.1-0.1-0.0-0.0
Percentage of Revenues us-gaap:InterestExpense us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome us-gaap:AccumulatedGainLossNetCashFlowHedgeParent0.00.00.00.00.00.00.00.00.0

us-gaap:SellingGeneralAndAdministrativeExpenses, us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:AccumulatedGainLossNetCashFlowHedgeParent



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-30
Value789165-2-13-46
Percentage of NetIncomeLoss0.60.50.41.00.2-0.1-0.8-0.10.3
Percentage of Revenues0.00.00.00.10.0-0.0-0.1-0.00.0
Percentage of Revenues us-gaap:SellingGeneralAndAdministrativeExpenses us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome us-gaap:AccumulatedGainLossNetCashFlowHedgeParent0.00.00.00.00.00.00.00.00.0

Profit Loss

us-gaap:ProfitLoss



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-03-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-312009-09-302009-06-302009-03-31
Value117516722498159126942404167917502853250420144463295034492328548318413723846184404132263032382438813066383936642863358933862601321431032295
Percentage of ProfitLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues6.79.313.08.814.412.08.89.614.812.410.820.215.316.611.922.70.117.010.622.317.012.913.015.515.112.414.713.711.614.814.311.413.613.310.6

us-gaap:StatementEquityComponents

us-gaap:Parent



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-03-312016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-03-312012-03-312011-03-312010-03-31
Value11751672249815912694240416791750201444632950344923285483184137238461843032306628632601
Percentage of ProfitLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues6.79.313.08.814.412.08.89.610.820.215.316.611.922.70.117.010.622.313.012.411.611.4
Percentage of Revenues us-gaap:Parent0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:RetainedEarnings



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-03-312016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-03-312012-03-312011-03-312010-03-31
Value11751672249815912694240416791750201444632950344923285483184137238461843032306628632601
Percentage of ProfitLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues6.79.313.08.814.412.08.89.610.820.215.316.611.922.70.117.010.622.313.012.411.611.4
Percentage of Revenues us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Depreciation Depletion And Amortization

Increase Decrease In Other Operating Capital Net

Increase Decrease In Inventories

Net Cash Provided By Used In Investing Activities

us-gaap:NetCashProvidedByUsedInInvestingActivities



Period End2020-03-312019-03-312018-03-312017-03-312016-03-312011-03-312010-03-312009-03-31
Value-902-853-1764350-1886498-699-48
Percentage of NetCashProvidedByUsedInInvestingActivities100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues-5.1-4.7-9.21.9-10.12.0-3.1-0.2

Payments To Acquire Property Plant And Equipment

us-gaap:PaymentsToAcquirePropertyPlantAndEquipment



Period End2020-03-312019-03-312018-03-312017-03-312016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-03-312012-03-312011-03-312010-03-31
Value63053987074095690994886585794710369088491064714937915758
Percentage of PaymentsToAcquirePropertyPlantAndEquipment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Payments To Acquire Investments

us-gaap:PaymentsToAcquireInvestments



Period End2020-03-312019-03-312018-03-312017-03-312016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-03-312012-03-312011-03-312010-03-312009-03-31
Value10961138152112731041972385897819825677359477890213612274151747922
Percentage of PaymentsToAcquireInvestments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Net Cash Provided By Used In Financing Activities

us-gaap:NetCashProvidedByUsedInFinancingActivities



Period End2020-03-312019-03-312018-03-312017-03-312016-03-312011-03-312010-03-312009-03-31
Value-1151863-2909-21342806-2314-3368-4583
Percentage of NetCashProvidedByUsedInFinancingActivities100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues-0.710.2-15.3-11.815.0-9.4-14.7-21.1

Payments For Repurchase Of Common Stock

Debt Instrument Interest Rate Stated Percentage

us-gaap:Currency, us-gaap:Range, us-gaap:DebtInstrument, us-gaap:SubsequentEventType

us-gaap:DebtInstrumentInterestRateStatedPercentage

currency:EUR, srt:Maximum, ibm:EightToTwentyYearFixedRateNotesIssuedFebruary2020, us-gaap:SubsequentEvent



Period End2020-02-11
Value0.012
Percentage of DebtInstrumentInterestRateStatedPercentage100.0
Percentage of LongTermDebtAndCapitalLeaseObligations0.0
Percentage of LongTermDebtAndCapitalLeaseObligations currency:EUR srt:Maximum ibm:EightToTwentyYearFixedRateNotesIssuedFebruary2020 us-gaap:SubsequentEvent0.0

currency:EUR, srt:Minimum, ibm:EightToTwentyYearFixedRateNotesIssuedFebruary2020, us-gaap:SubsequentEvent



Period End2020-02-11
Value0.003
Percentage of DebtInstrumentInterestRateStatedPercentage25.0
Percentage of LongTermDebtAndCapitalLeaseObligations0.0
Percentage of LongTermDebtAndCapitalLeaseObligations currency:EUR srt:Minimum ibm:EightToTwentyYearFixedRateNotesIssuedFebruary2020 us-gaap:SubsequentEvent0.0

Effective Income Tax Rate Continuing Operations

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

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

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

Share Based Compensation

us-gaap:ShareBasedCompensation



Period End2020-03-312019-03-312018-03-312017-03-312016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-03-312012-03-312011-03-312010-03-312009-03-31
Value1891131161291339911213012796150142124159144168170169137
Percentage of ShareBasedCompensation100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Deferred Tax Liabilities

Deferred Tax Assets Net

us-gaap:DeferredTaxAssetsNet



Period End2019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-31
Value1189089188522109901018911318957711428109161050310976
Percentage of DeferredTaxAssetsNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Unrecognized Tax Benefits

us-gaap:UnrecognizedTaxBenefits



Period End2019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-312008-12-312007-12-31
Value7146675970313740457451044458567255755293479038983094
Percentage of UnrecognizedTaxBenefits100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Deferred Tax Assets Valuation Allowance

us-gaap:DeferredTaxAssetsValuationAllowance



Period End2019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-31
Value60891510049167406467341187912795812
Percentage of DeferredTaxAssetsValuationAllowance100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions

Operating Lease Right Of Use Asset

us-gaap:OperatingLeaseRightOfUseAsset



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312019-01-01
Value487149964901499846344800
Percentage of OperatingLeaseRightOfUseAsset100.0100.0100.0100.0100.0100.0

us-gaap:ConsolidationItems

ibm:CorporateAndReconcilingItems



Period End2019-12-31
Value3530
Percentage of OperatingLeaseRightOfUseAsset70.7

us-gaap:StatementGeographical, us-gaap:ConcentrationRiskByBenchmark, us-gaap:ConcentrationRiskByType

country:JP, ibm:AssetsUnderLease, us-gaap:GeographicConcentrationRisk



Period End2019-12-31
Value659
Percentage of OperatingLeaseRightOfUseAsset13.2

country:US, ibm:AssetsUnderLease, us-gaap:GeographicConcentrationRisk



Period End2019-12-31
Value1386
Percentage of OperatingLeaseRightOfUseAsset27.7

ibm:OtherCountriesExcludingUsAndJapan, ibm:AssetsUnderLease, us-gaap:GeographicConcentrationRisk



Period End2019-12-31
Value2951
Percentage of OperatingLeaseRightOfUseAsset59.1

Cash And Cash Equivalents Period Increase Decrease

Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312015-12-31
Value113718314102254553417272116041173110960122621223411168119321029680737885
Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Proceeds From Repayments Of Short Term Debt

ibm:AcquisitionRelatedCharges



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-30
Value0255102392100613423-2747
Percentage of AcquisitionRelatedCharges0.0100.0100.0100.0100.0100.00.00.0100.0100.0100.0100.0100.0100.0100.0

ibm:AmortizationAcquiredIntangibleAssets



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-30
Value473473169173207203203238243249265265211162160
Percentage of AmortizationAcquiredIntangibleAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

ibm:AmortizationOfIntangibleAssetsNetOfCurrencyImpact



Period End2020-03-312019-09-302019-03-312018-09-30
Value622614303348
Percentage of AmortizationOfIntangibleAssetsNetOfCurrencyImpact100.0100.0100.0100.0

ibm:ChangeInPretaxStockBasedCompensation



Period End2020-03-312019-09-302019-06-302018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-31
Value7691106-10-13-198-431-36-39-113
Percentage of ChangeInPretaxStockBasedCompensation100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AwardType

us-gaap:PerformanceShares



Period End2020-03-312019-06-302018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-31
Value-6-18-2-6-117-1420-412-31-71
Percentage of ChangeInPretaxStockBasedCompensation-7.9-10.0133.320.046.257.987.5350.064.5133.3200.079.563.633.3

us-gaap:RestrictedStockUnitsRSU



Period End2020-03-312019-09-302019-06-302018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-31
Value171013-1-7-5-28166-9-10-714
Percentage of ChangeInPretaxStockBasedCompensation22.411.0130.0-16.770.038.510.5100.0-400.019.4300.0-166.717.9-9.1133.3

us-gaap:ProductOrService

ibm:ContractWithCustomerLiabilityAdditions

ibm:ExtendedWarranty



Period End2020-03-312019-03-312018-03-31
Value403646
Percentage of ContractWithCustomerLiabilityAdditions100.0100.0100.0

us-gaap:ProductOrService

ibm:ContractWithCustomerLiabilityOther

ibm:ExtendedWarranty



Period End2020-03-312019-03-312018-03-31
Value-13-35
Percentage of ContractWithCustomerLiabilityOther100.0100.0100.0

us-gaap:RetirementPlanType

ibm:DefinedBenefitPlanContributionsByEmployerNoncash

ibm:PensionPlanIncludingMultiemployerPlan



Period End2020-03-312019-03-31
Value255256
Percentage of DefinedBenefitPlanContributionsByEmployerNoncash100.0100.0

ibm:ExpenseAndOtherIncome



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-312009-09-302009-06-302009-03-31
Value7972681362426160580764237111573563516348575166537652630958156165645157676513680475637354656779887072665771207283714675007041632462346462625563196309
Percentage of ExpenseAndOtherIncome100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FinancingReceivablePortfolioSegment

ibm:FinancingReceivableNumberOfClassesOfFinancingReceivable

ibm:FinanceLeasesPortfolioSegmentAndLoansReceivable



Period End2020-03-31
Value3.0
Percentage of FinancingReceivableNumberOfClassesOfFinancingReceivable100.0

ibm:GainLossOnDispositionOfAssetsAndOther



Period End2020-03-312019-03-312018-03-312017-03-312016-03-31
Value-315176-34-13-172
Percentage of GainLossOnDispositionOfAssetsAndOther100.0100.0100.0100.0100.0

ibm:IntellectualPropertyAndCustomDevelopmentIncome



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-312009-09-302009-06-302009-03-31
Value116166222101275250317308365445528365217193188128173199145191207201191247183303289255298295262278-297-261294-302-268
Percentage of IntellectualPropertyAndCustomDevelopmentIncome100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType

ibm:MultiEmployerDefinedBenefitPlanCosts

us-gaap:ForeignPlan, us-gaap:PensionPlansDefinedBenefit



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-31
Value710899101011109
Percentage of MultiEmployerDefinedBenefitPlanCosts100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

ibm:NonOperatingFinanceReceivablesNet



Period End2020-03-312019-03-312018-03-312017-03-312016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-03-312012-03-312011-03-312010-03-312009-03-31
Value-20193-8915701358-1732-4-2771615-2026329-46665-1347732636541457387
Percentage of NonOperatingFinanceReceivablesNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

ibm:NonoperatingRetirementRelatedCosts



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-30
Value264145136138389394402306381378139163142204186
Percentage of NonoperatingRetirementRelatedCosts100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

ibm:OtherIncomeAndExpense



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-312009-09-302009-06-302009-03-31
Value182-31-747-73275280413-114-76-28-837253-146-133-301-143-1505-103-201-126-113-62-91-60-606-132-5812897-202-106-95-5455-28-304
Percentage of OtherIncomeAndExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:StatementEquityComponents

us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:AccumulatedGainLossNetCashFlowHedgeParent



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-30
Value89447-202878397-104-64-146
Percentage of OtherIncomeAndExpense48.9-1441.927.0-119.22.9141.8-25.256.1192.1

ibm:PaymentsToAcquireAndDevelopSoftware



Period End2020-03-312019-03-312018-03-312017-03-312016-03-31
Value153156126137144
Percentage of PaymentsToAcquireAndDevelopSoftware100.0100.0100.0100.0100.0

ibm:PurchasesSalesTreasuryStockUnderEmployeePlansNet



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-03-312016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-03-312012-03-312011-03-31
Value-2132-40-48-2-41-45-44-2216-2-42-351113-58-51-15-65-7293
Percentage of PurchasesSalesTreasuryStockUnderEmployeePlansNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StatementEquityComponents

us-gaap:Parent



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-03-312016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-03-312012-03-312011-03-31
Value-2132-40-48-2-41-45-44-2216-2-42-351113-58-51-15-65-7293
Percentage of PurchasesSalesTreasuryStockUnderEmployeePlansNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RetainedEarnings



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-03-312016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-03-312012-03-312011-03-31
Value369211011025017-3-5-711-5-3-12-18-9
Percentage of PurchasesSalesTreasuryStockUnderEmployeePlansNet-14.318.8-22.5-4.2-50.0-24.4-2.2-2.3-0.0156.2-0.0-40.58.6-45.5-53.8-19.09.820.018.525.0-9.7

us-gaap:TreasuryStockCommon



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-03-312016-03-31
Value-2427-49-50-3-51-47-45-22
Percentage of PurchasesSalesTreasuryStockUnderEmployeePlansNet114.384.4122.5104.2150.0124.4104.4102.3100.0

us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

ibm:RevenueFinancialServices

ibm:OperatingSegmentsExcludingIntersegmentElimination, ibm:GlobalFinancing



Period End2020-03-312019-03-31
Value299406
Percentage of RevenueFinancialServices100.0100.0

us-gaap:ConsolidationItems

ibm:RevenuesExcludingDisposalGroups

us-gaap:MaterialReconcilingItems



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value44595774624569
Percentage of RevenuesExcludingDisposalGroups100.0100.0100.0100.0100.0100.0100.0

ibm:SalesTreasuryStockUnderEmployeePlansShares



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-03-312016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-03-312012-03-312011-03-31
Value00000000000000000-1574177011
Percentage of SalesTreasuryStockUnderEmployeePlansShares100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

ibm:SalesTypeAndDirectFinancingLeasesLeaseIncome



Period End2020-03-312019-09-302019-06-302019-03-31
Value208184178172
Percentage of SalesTypeAndDirectFinancingLeasesLeaseIncome100.0100.0100.0100.0

us-gaap:ConsolidationItems

ibm:SegmentReportingInformationPretaxIncomeChangePercent

us-gaap:OperatingSegments



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302013-06-30
Value-0.59-0.289-0.2020.195-0.0110.14-0.11-0.005-0.1540.294-0.112-0.225-0.142
Percentage of SegmentReportingInformationPretaxIncomeChangePercent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, ibm:CloudAndCognitiveSoftware



Period End2020-03-312019-09-302019-06-302019-03-31
Value-0.477-0.374-0.0140.052
Percentage of SegmentReportingInformationPretaxIncomeChangePercent80.8129.46.926.7

us-gaap:OperatingSegments, ibm:GlobalBusinessServices



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-30
Value-0.0910.012-0.1941.5210.3090.237-0.486-0.168-0.3250.534-0.18-0.261-0.6770.04100000000000001-0.218-0.353-0.213-0.064-0.150.337-0.1060.0160.284-0.224
Percentage of SegmentReportingInformationPretaxIncomeChangePercent15.4-4.296.0780.0-2809.1169.3441.83360.0211.0181.6160.7116.00.00.00.00.00.00.00.00.00.00.00.0157.7

us-gaap:OperatingSegments, ibm:GlobalFinancing



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312013-06-30
Value-0.327-0.108-0.331-0.2340.2690.2680.213-0.314-0.396-0.195-0.368-0.238-0.250.0640.1810.035-0.1360.042
Percentage of SegmentReportingInformationPretaxIncomeChangePercent55.437.4163.9-120.0-2445.5191.4-193.66280.0257.1-66.3328.6105.80.00.00.00.00.0-29.6

us-gaap:OperatingSegments, ibm:GlobalTechnologyServices



Period End2020-03-312019-09-302019-06-302019-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-30
Value-1.647-0.192-0.4793.1510.063-0.216-0.252-0.182-0.068-0.1130.222-0.151-0.0090000000000000010.117-0.138
Percentage of SegmentReportingInformationPretaxIncomeChangePercent279.266.4237.11615.90.00.00.00.00.00.00.00.00.00.097.2

us-gaap:OperatingSegments, ibm:Systems



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302016-09-302016-06-30
Value0.076-0.813-0.823-0.004-0.3793.7680.0791.497-0.675-0.453-0.575
Percentage of SegmentReportingInformationPretaxIncomeChangePercent-12.9281.3407.4-2.13445.52691.4-71.8-29940.0438.3404.5255.6

us-gaap:ConsolidationItems

ibm:SegmentReportingInformationPretaxIncomeMargin

us-gaap:OperatingSegments



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302013-06-302012-06-30
Value0.0530.1370.1410.1260.1880.1720.1010.1890.160.1210.1890.180.0910.2110.2240.1870.211
Percentage of SegmentReportingInformationPretaxIncomeMargin100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, ibm:CloudAndCognitiveSoftware



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value0.1540.2150.320.3010.3570.3230.278
Percentage of SegmentReportingInformationPretaxIncomeMargin290.6156.9227.0238.9189.9187.8275.2

us-gaap:OperatingSegments, ibm:GlobalBusinessServices



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-30
Value0.0650.1370.0710.0750.1380.090.0340.1080.0770.0710.1270.1090.0450.00400000000000000360.1560.1470.1340.00.1750.1780.1360.0080000000000000070.20.130.1510.0060000000000000050.1560.166
Percentage of SegmentReportingInformationPretaxIncomeMargin122.6100.050.459.573.452.333.757.148.158.767.260.649.50.073.965.60.00.00.00.00.00.00.069.50.00.00.078.7

us-gaap:OperatingSegments, ibm:GlobalFinancing



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-06-302012-06-30
Value0.3790.4260.3780.4080.4250.4120.4510.3490.40.4050.4650.5050.4310.0100000000000000090.5450.5190.492-0.00500000000000000440.4390.4980.5280.5180.511
Percentage of SegmentReportingInformationPretaxIncomeMargin715.1310.9268.1323.8226.1239.5446.5184.7250.0334.7246.0280.6473.60.0258.3231.70.00.00.00.00.0277.0242.2

us-gaap:OperatingSegments, ibm:GlobalTechnologyServices



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-30
Value-0.0260.070.0330.0380.0820.060.0090.0080000000000000070.1570.1510.123-0.00300000000000000270.1770.1920.1410.0059999999999999780.1940.1540.1610.0080000000000000070.1660.171
Percentage of SegmentReportingInformationPretaxIncomeMargin-49.151.123.430.243.634.98.90.074.467.40.00.00.00.00.00.00.082.40.00.00.081.0

us-gaap:OperatingSegments, ibm:Systems



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-31
Value-0.1430.0230.032-0.1350.1090.143-0.1230.1740.039-0.1190.0780.106-0.0050.1140.1970.113
Percentage of SegmentReportingInformationPretaxIncomeMargin-269.816.822.7-107.158.083.1-121.892.124.4-98.341.358.9-5.554.087.90.0

us-gaap:ConsolidationItems

ibm:SegmentReportingInformationRevenueChangePercent

us-gaap:OperatingSegments



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302013-06-30
Value-0.019-0.023-0.052-0.043-0.0150.0490.052-0.006-0.051-0.034-0.01-0.035-0.029
Percentage of SegmentReportingInformationRevenueChangePercent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, ibm:CloudAndCognitiveSoftware



Period End2020-03-312019-09-302019-06-302019-03-31
Value0.0420.04-0.005-0.028
Percentage of SegmentReportingInformationRevenueChangePercent-221.1-173.99.665.1

us-gaap:OperatingSegments, ibm:GlobalBusinessServices



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-30
Value-0.0110.0080.001-0.0030.0050.020.042-0.023-0.039-0.036-0.01-0.026-0.0460.007000000000000006-0.13-0.119-0.128-0.018-0.03-0.025-0.0090.0040.004-0.011
Percentage of SegmentReportingInformationRevenueChangePercent57.9-34.8-1.97.0-33.340.880.8383.376.5105.9100.074.30.00.00.00.00.00.00.00.00.00.00.037.9

us-gaap:OperatingSegments, ibm:GlobalFinancing



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312013-06-30
Value-0.276-0.112-0.271-0.1540.040.230.086-0.085-0.239-0.143-0.26-0.217-0.1450.032-0.049-0.006-0.0720.029
Percentage of SegmentReportingInformationRevenueChangePercent1452.6487.0521.2358.1-266.7469.4165.41416.7468.6420.62600.0620.00.00.00.00.00.0-100.0

us-gaap:OperatingSegments, ibm:GlobalTechnologyServices



Period End2020-03-312019-09-302019-06-302019-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-30
Value-0.056-0.053-0.047-0.0530.010999999999999996-0.106-0.106-0.111-0.013999999999999999-0.029-0.017-0.0290.0020000000000000018-0.044-0.045
Percentage of SegmentReportingInformationRevenueChangePercent294.7230.490.4123.30.00.00.00.00.00.00.00.00.00.0155.2

us-gaap:OperatingSegments, ibm:Systems



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-31
Value0.017-0.126-0.205-0.098-0.0160.2570.0580.123-0.108-0.173-0.205-0.21-0.184
Percentage of SegmentReportingInformationRevenueChangePercent-89.5547.8394.2227.9106.7524.5111.5-2050.0211.8508.82050.0600.00.0

us-gaap:AllocatedShareBasedCompensationExpense



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-312009-09-302009-06-30
Value18922013511312912511612313612914212813311113115014212415915016114418316016816616217096961699586
Percentage of AllocatedShareBasedCompensationExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncomeStatementLocation

ibm:CostOfRevenue



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-31
Value27292220192120222323232321
Percentage of AllocatedShareBasedCompensationExpense14.313.216.317.714.716.817.217.916.917.816.218.015.8

us-gaap:ResearchAndDevelopmentExpense



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-30
Value45442119151616131515141413111213141415121514161512
Percentage of AllocatedShareBasedCompensationExpense23.820.015.616.811.612.813.810.611.011.69.910.99.89.99.28.79.911.39.48.09.39.70.08.27.5

us-gaap:SellingGeneralAndAdministrativeExpenses



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-30
Value1171479374958881889891105919982921051008811111011599128133117
Percentage of AllocatedShareBasedCompensationExpense61.966.868.965.573.670.469.871.572.170.573.971.174.473.970.270.070.471.069.873.371.468.80.072.773.1

us-gaap:AllocatedShareBasedCompensationExpenseNetOfTax



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-30
Value1441701068810010281829781958690738699948310598105941191041081091041089696
Percentage of AllocatedShareBasedCompensationExpenseNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FinancingReceivablePortfolioSegment

us-gaap:AllowanceForLoanAndLeaseLossesAdjustmentsNet

ibm:FinanceLeasesPortfolioSegmentAndLoansReceivable



Period End2020-03-312019-03-312018-03-312017-03-31
Value-16-1411
Percentage of AllowanceForLoanAndLeaseLossesAdjustmentsNet100.0100.0100.0100.0

us-gaap:StatementGeographical, us-gaap:FinancingReceivablePortfolioSegment

srt:Americas, ibm:FinanceLeasesPortfolioSegmentAndLoansReceivable



Period End2020-03-312019-03-31
Value-13-1
Percentage of AllowanceForLoanAndLeaseLossesAdjustmentsNet81.2100.0

srt:AsiaPacific, ibm:FinanceLeasesPortfolioSegmentAndLoansReceivable



Period End2020-03-312019-03-31
Value-1000000.01000000.0
Percentage of AllowanceForLoanAndLeaseLossesAdjustmentsNet6.2-100.0

us-gaap:EMEA, ibm:FinanceLeasesPortfolioSegmentAndLoansReceivable



Period End2020-03-312019-03-31
Value-20
Percentage of AllowanceForLoanAndLeaseLossesAdjustmentsNet12.5-0.0

us-gaap:AmortizationOfIntangibleAssets



Period End2020-03-312019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-03-312009-03-31
Value622307303348342340383388390403398347309290296298329339340339344350326331324318310307309310286312
Percentage of AmortizationOfIntangibleAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecurities

us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount

us-gaap:EmployeeStockOption



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-30
Value10010000000
Percentage of AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect



Period End2020-03-312019-03-312018-03-312017-03-31
Value30575668282223
Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect100.0100.0100.0100.0

us-gaap:DerivativeInstrumentRisk, us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship

us-gaap:CashFlowHedgeGainLossToBeReclassifiedWithinTwelveMonths

ibm:ForwardStartingInterestRateSwap, us-gaap:CashFlowHedging



Period End2020-03-312019-03-31
Value-18-11
Percentage of CashFlowHedgeGainLossToBeReclassifiedWithinTwelveMonths100.0100.0

us-gaap:CurrencySwap, us-gaap:CashFlowHedging



Period End2020-03-312019-03-312018-03-312017-03-31
Value-2134619427
Percentage of CashFlowHedgeGainLossToBeReclassifiedWithinTwelveMonths116.7-3145.50.00.0

us-gaap:ForeignExchangeForward, us-gaap:CashFlowHedging



Period End2020-03-312019-03-312018-03-312017-03-312013-03-312012-03-31
Value180256-137245200167
Percentage of CashFlowHedgeGainLossToBeReclassifiedWithinTwelveMonths-1000.0-2327.30.00.00.00.0

us-gaap:ChangeInUnrealizedGainLossOnHedgedItemInFairValueHedge1



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-30
Value-500-64-69667918241-414283-118-233115-187189-118-14121-83-388331151765835-86
Percentage of ChangeInUnrealizedGainLossOnHedgedItemInFairValueHedge1100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

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

us-gaap:InterestRateContract, us-gaap:FairValueHedging, ibm:CostOfFinancing



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-30
Value-130-20-3333429620-222340-55-112-99102
Percentage of ChangeInUnrealizedGainLossOnHedgedItemInFairValueHedge126.00.031.247.850.053.252.748.853.754.848.246.648.152.954.0

us-gaap:InterestRateContract, us-gaap:FairValueHedging, us-gaap:InterestExpense



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-30
Value-370-43-3633378720-192043-63-120-8886
Percentage of ChangeInUnrealizedGainLossOnHedgedItemInFairValueHedge174.00.067.252.250.046.847.848.846.347.651.853.451.547.145.5

us-gaap:CommonStockDividendsPerShareCashPaid



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-312009-09-302009-06-302009-03-31
Value1.621.621.621.571.571.571.51.51.51.41.41.41.31.31.31.11.11.10.950.950.950.850.850.850.750.750.750.650.650.650.550.550.550.5
Percentage of CommonStockDividendsPerShareCashPaid100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ContractWithCustomerLiabilityRevenueRecognized



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312018-01-31
Value420036003800350038004000350010200
Percentage of ContractWithCustomerLiabilityRevenueRecognized100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProductOrService

ibm:ExtendedWarranty



Period End2020-03-312019-03-312018-03-312018-03-31
Value57646969
Percentage of ContractWithCustomerLiabilityRevenueRecognized1.41.82.0

us-gaap:CostOfGoodsSoldSalesTypeLease



Period End2020-03-312019-09-302019-06-302019-03-31
Value76757455
Percentage of CostOfGoodsSoldSalesTypeLease100.0100.0100.0100.0

us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanAmortizationOfGainsLosses

country:US, us-gaap:OtherPostretirementBenefitPlansDefinedBenefit



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-30
Value-700-1-2-2-2-5-5-5-5-5
Percentage of DefinedBenefitPlanAmortizationOfGainsLosses100.00.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

country:US, us-gaap:PensionPlansDefinedBenefit



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-30
Value-207-140-139-140-381-378-384-334-331-337-328-324
Percentage of DefinedBenefitPlanAmortizationOfGainsLosses2957.10.00.014000.019050.018900.019200.06680.06620.06740.06560.06480.0

us-gaap:ForeignPlan, us-gaap:OtherPostretirementBenefitPlansDefinedBenefit



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-30
Value-6-3-3-3-1-1-1-2-2-2-2-2
Percentage of DefinedBenefitPlanAmortizationOfGainsLosses85.70.00.0300.050.050.050.040.040.040.040.040.0

us-gaap:ForeignPlan, us-gaap:PensionPlansDefinedBenefit



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-30
Value-342-313-312-314-346-353-359-387-371-361-357-359
Percentage of DefinedBenefitPlanAmortizationOfGainsLosses4885.70.00.031400.017300.017650.017950.07740.07420.07220.07140.07180.0

us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanAmortizationOfPriorServiceCostCredit

country:US, us-gaap:OtherPostretirementBenefitPlansDefinedBenefit



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-30
Value1-1-1-1-2-2-2-2-2-2-2-2
Percentage of DefinedBenefitPlanAmortizationOfPriorServiceCostCredit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

country:US, us-gaap:PensionPlansDefinedBenefit



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-30
Value444444444433
Percentage of DefinedBenefitPlanAmortizationOfPriorServiceCostCredit400.0-400.0-400.0-400.0-200.0-200.0-200.0-200.0-200.0-200.0-150.0-150.0

us-gaap:ForeignPlan, us-gaap:OtherPostretirementBenefitPlansDefinedBenefit



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-30
Value0.00.00.00.00.00.00.00.00.00.0-1000000.0-1000000.0
Percentage of DefinedBenefitPlanAmortizationOfPriorServiceCostCredit0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.050.050.0

us-gaap:ForeignPlan, us-gaap:PensionPlansDefinedBenefit



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-30
Value-5-7-7-6-20-21-21-25-24-24-28-27
Percentage of DefinedBenefitPlanAmortizationOfPriorServiceCostCredit-500.0700.0700.0600.01000.01050.01050.01250.01200.01200.01400.01350.0

us-gaap:DefinedBenefitPlanContributionsByEmployer



Period End2020-03-312019-03-31
Value217288
Percentage of DefinedBenefitPlanContributionsByEmployer100.0100.0

us-gaap:RetirementPlanSponsorLocation

country:US



Period End2020-03-312019-03-31
Value136194
Percentage of DefinedBenefitPlanContributionsByEmployer62.767.4

us-gaap:ForeignPlan



Period End2020-03-312019-03-31
Value8294
Percentage of DefinedBenefitPlanContributionsByEmployer37.832.6

us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanExpectedReturnOnPlanAssets

country:US, us-gaap:PensionPlansDefinedBenefit



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-30
Value542650650650675675676753753754922922
Percentage of DefinedBenefitPlanExpectedReturnOnPlanAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ForeignPlan, us-gaap:OtherPostretirementBenefitPlansDefinedBenefit



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-30
Value111111122222
Percentage of DefinedBenefitPlanExpectedReturnOnPlanAssets0.20.20.20.20.10.10.10.30.30.30.20.2

us-gaap:ForeignPlan, us-gaap:PensionPlansDefinedBenefit



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-30
Value309391396399330339348340327317468481
Percentage of DefinedBenefitPlanExpectedReturnOnPlanAssets57.060.260.961.448.950.251.545.243.442.050.852.2

us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanInterestCost

country:US, us-gaap:OtherPostretirementBenefitPlansDefinedBenefit



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-30
Value263636363333333838384141
Percentage of DefinedBenefitPlanInterestCost100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

country:US, us-gaap:PensionPlansDefinedBenefit



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-30
Value375470469472430429430478478479512511
Percentage of DefinedBenefitPlanInterestCost1442.31305.61302.81311.11303.01300.01303.01257.91257.91260.51248.81246.3

us-gaap:ForeignPlan, us-gaap:OtherPostretirementBenefitPlansDefinedBenefit



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-30
Value101212121111131414141511
Percentage of DefinedBenefitPlanInterestCost38.533.333.333.333.333.339.436.836.836.836.626.8

us-gaap:ForeignPlan, us-gaap:PensionPlansDefinedBenefit



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-30
Value129202206208204211215215206201257267
Percentage of DefinedBenefitPlanInterestCost496.2561.1572.2577.8618.2639.4651.5565.8542.1528.9626.8651.2

us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanNetPeriodicBenefitCost

country:US, us-gaap:OtherPostretirementBenefitPlansDefinedBenefit



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-30
Value363838393737374545464949
Percentage of DefinedBenefitPlanNetPeriodicBenefitCost100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

country:US, us-gaap:PensionPlansDefinedBenefit



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-30
Value44-36-37-34140136143636067-79-85
Percentage of DefinedBenefitPlanNetPeriodicBenefitCost122.2-94.7-97.4-87.2378.4367.6386.5140.0133.3145.7-161.2-173.5

us-gaap:ForeignPlan, us-gaap:OtherPostretirementBenefitPlansDefinedBenefit



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-30
Value161515151212141616161612
Percentage of DefinedBenefitPlanNetPeriodicBenefitCost44.439.539.538.532.432.437.835.635.634.832.724.5

us-gaap:ForeignPlan, us-gaap:PensionPlansDefinedBenefit



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-30
Value274235225223318325327271344335239271
Percentage of DefinedBenefitPlanNetPeriodicBenefitCost761.1618.4592.1571.8859.5878.4883.8602.2764.4728.3487.8553.1

us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanOtherCosts

us-gaap:ForeignPlan, us-gaap:PensionPlansDefinedBenefit



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-30
Value51165547-74145837
Percentage of DefinedBenefitPlanOtherCosts100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanRecognizedNetGainLossDueToSettlementsAndCurtailments1

us-gaap:ForeignPlan, us-gaap:PensionPlansDefinedBenefit



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-30
Value-8-3-3-1-2-60-2-31-4-10
Percentage of DefinedBenefitPlanRecognizedNetGainLossDueToSettlementsAndCurtailments1100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0

us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanServiceCost

country:US, us-gaap:OtherPostretirementBenefitPlansDefinedBenefit



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-30
Value233333343444
Percentage of DefinedBenefitPlanServiceCost100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ForeignPlan, us-gaap:PensionPlansDefinedBenefit



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-30
Value95939393104101104106101101108106
Percentage of DefinedBenefitPlanServiceCost4750.03100.03100.03100.03466.73366.73466.72650.03366.72525.02700.02650.0

us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType

us-gaap:DefinedContributionPlanCostRecognized

country:US, us-gaap:PensionPlansDefinedBenefit



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-30
Value155151140149152145160156158162159161
Percentage of DefinedContributionPlanCostRecognized100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ForeignPlan, us-gaap:PensionPlansDefinedBenefit



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-30
Value110109114989510310810297101103108
Percentage of DefinedContributionPlanCostRecognized71.072.281.465.862.571.067.565.461.462.364.867.1

us-gaap:Depreciation



Period End2020-03-312019-03-312018-03-312017-03-312016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-03-312012-03-312011-03-312010-03-312009-03-31
Value10121143774709677681646665670717800826802870822847918924917
Percentage of Depreciation100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

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

us-gaap:DerivativeExcludedComponentGainLossRecognizedInEarnings

us-gaap:ForeignExchangeContract, us-gaap:NetInvestmentHedging, ibm:CostOfFinancing



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-30
Value77488860
Percentage of DerivativeExcludedComponentGainLossRecognizedInEarnings100.0100.0100.0100.0100.0100.0100.00.0

us-gaap:ForeignExchangeContract, us-gaap:NetInvestmentHedging, us-gaap:InterestExpense



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-30
Value202099911687
Percentage of DerivativeExcludedComponentGainLossRecognizedInEarnings285.7285.7225.0112.5112.5137.5100.00.00.0

us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship

ibm:CashFlowHedgingAndNetInvestmentHedging



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-30
Value2727131718201279
Percentage of DerivativeExcludedComponentGainLossRecognizedInEarnings385.7385.7325.0212.5225.0250.0200.00.00.0

us-gaap:DerivativeGainLossOnDerivativeNet



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-30
Value-146-94165212-69-86-222-10275-3234370426-39357-238211-54-43315568-52308-218-387-267226-12
Percentage of DerivativeGainLossOnDerivativeNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

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

us-gaap:InterestRateContract, us-gaap:FairValueHedging, ibm:CostOfFinancing



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-30
Value1832336-27-32-80-342-1-2077137125-78
Percentage of DerivativeGainLossOnDerivativeNet-12.3-3.213.917.039.137.236.030.015.33.1-58.820.832.235.032.8

us-gaap:InterestRateContract, us-gaap:FairValueHedging, us-gaap:InterestExpense



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-30
Value4994839-26-28-72-336-1-2188147112-65
Percentage of DerivativeGainLossOnDerivativeNet-33.6-9.629.118.437.732.632.430.013.13.1-61.823.834.531.427.3

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

us-gaap:EquityContract, us-gaap:NotDesignatedAsHedgingInstrumentEconomicHedge, us-gaap:SellingGeneralAndAdministrativeExpenses



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-30
Value-2019261194012-143111464521
Percentage of DerivativeGainLossOnDerivativeNet137.7-9.615.856.1-58.0-14.06.3-310.04.0-143.8132.45.7

us-gaap:ForeignExchangeContract, us-gaap:NotDesignatedAsHedgingInstrumentEconomicHedge, ibm:OtherIncomeExpense



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-30
Value-11-1146918-55-38-55-35185-7630184
Percentage of DerivativeGainLossOnDerivativeNet7.5121.341.88.579.744.224.8350.067.3237.588.249.7

us-gaap:DisposalGroupIncludingDiscontinuedOperationOperatingIncomeLoss



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value25-25557-556218814
Percentage of DisposalGroupIncludingDiscontinuedOperationOperatingIncomeLoss100.0100.0100.0100.0100.0100.0100.0

us-gaap:ConsolidationItems

us-gaap:DisposalGroupIncludingDiscontinuedOperationRevenue

us-gaap:MaterialReconcilingItems



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value1848363343432457446
Percentage of DisposalGroupIncludingDiscontinuedOperationRevenue100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperations

us-gaap:DisposalGroupNotDiscontinuedOperationGainLossOnDisposal

ibm:SelectStandaloneCloudAndCognitiveSoftwareProducts



Period End2020-03-312019-09-30
Value62572
Percentage of DisposalGroupNotDiscontinuedOperationGainLossOnDisposal100.0100.0

us-gaap:DividendsCommonStockCash



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-03-312016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-03-312012-03-312011-03-312010-03-31
Value1440143614351397143114371382132112501261127012781088108910901096990-7091948870795718
Percentage of DividendsCommonStockCash100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StatementEquityComponents

us-gaap:Parent



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-03-312016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-03-312012-03-312011-03-312010-03-31
Value1440143614351397143114371382132112501261127012781088108910901096990-7091948870795718
Percentage of DividendsCommonStockCash100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RetainedEarnings



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-03-312016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-03-312012-03-312011-03-312010-03-31
Value1440143614351397143114371382132112501261127012781088108910901096990-7091948870795718
Percentage of DividendsCommonStockCash100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents



Period End2020-03-312019-03-312018-03-312017-03-31
Value-403-102100100
Percentage of EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents100.0100.0100.0100.0

us-gaap:EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-31
Value45502925292435413848474243384551484156525650645660575961575562
Percentage of EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FinancingReceivablePortfolioSegment

us-gaap:FinancingReceivableAllowanceForCreditLossesRecovery

ibm:FinanceLeasesPortfolioSegmentAndLoansReceivable



Period End2020-03-312019-03-312018-03-312017-03-31
Value1000000.00.00.00.0
Percentage of FinancingReceivableAllowanceForCreditLossesRecovery100.00.00.00.0

us-gaap:StatementGeographical, us-gaap:FinancingReceivablePortfolioSegment

srt:AsiaPacific, ibm:FinanceLeasesPortfolioSegmentAndLoansReceivable



Period End2020-03-312019-03-31
Value1000000.00.0
Percentage of FinancingReceivableAllowanceForCreditLossesRecovery100.00.0

us-gaap:FinancingReceivablePortfolioSegment

us-gaap:FinancingReceivableAllowanceForCreditLossesWriteOffs

ibm:FinanceLeasesPortfolioSegmentAndLoansReceivable



Period End2020-03-312019-03-312018-03-312017-03-312016-12-31
Value19829188
Percentage of FinancingReceivableAllowanceForCreditLossesWriteOffs100.0100.0100.0100.0100.0

us-gaap:StatementGeographical, us-gaap:FinancingReceivablePortfolioSegment

srt:Americas, ibm:FinanceLeasesPortfolioSegmentAndLoansReceivable



Period End2020-03-312019-03-31
Value164
Percentage of FinancingReceivableAllowanceForCreditLossesWriteOffs84.250.0

us-gaap:FiniteLivedIntangibleAssetsForeignCurrencyTranslationGainLoss



Period End2020-03-31
Value-92
Percentage of FiniteLivedIntangibleAssetsForeignCurrencyTranslationGainLoss100.0

us-gaap:IncomeStatementLocation

us-gaap:GainLossOnDerivativeInstrumentsNetPretax

ibm:CostOfFinancing



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value3-11-18-18151823
Percentage of GainLossOnDerivativeInstrumentsNetPretax100.0100.0100.0100.0100.0100.0100.0

ibm:CostOfServices



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value102220101919
Percentage of GainLossOnDerivativeInstrumentsNetPretax333.3-200.0-111.1-55.66.750.082.6

ibm:OtherIncomeExpense



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value-101-561271-69-63-43549
Percentage of GainLossOnDerivativeInstrumentsNetPretax-3366.75100.0-1505.6383.3-420.0-2416.7213.0

us-gaap:CostOfSales



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value91011188-6-17
Percentage of GainLossOnDerivativeInstrumentsNetPretax300.0-90.9-61.1-100.053.3-33.3-73.9

us-gaap:InterestExpense



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value10-35-39-20-21-17-15
Percentage of GainLossOnDerivativeInstrumentsNetPretax333.3318.2216.7111.1-140.0-94.4-65.2

us-gaap:SellingGeneralAndAdministrativeExpenses



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value-19120381414710-33
Percentage of GainLossOnDerivativeInstrumentsNetPretax-6366.7-181.8-211.1-783.3313.355.6-143.5

us-gaap:GoodwillAcquiredDuringPeriod



Period End2020-03-312017-03-312016-03-312015-03-312014-03-312013-03-312012-03-31
Value108191536239331067
Percentage of GoodwillAcquiredDuringPeriod100.0100.0100.0100.0100.0100.0100.0

us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, ibm:CloudAndCognitiveSoftware



Period End2020-03-31
Value10
Percentage of GoodwillAcquiredDuringPeriod100.0

us-gaap:GoodwillForeignCurrencyTranslationGainLoss



Period End2020-03-312019-03-312018-03-312017-03-31
Value72747-5697
Percentage of GoodwillForeignCurrencyTranslationGainLoss100.0100.0100.0100.0

us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, ibm:CloudAndCognitiveSoftware



Period End2020-03-312019-03-31
Value43831
Percentage of GoodwillForeignCurrencyTranslationGainLoss60.266.0

us-gaap:OperatingSegments, ibm:GlobalBusinessServices



Period End2020-03-312019-03-31
Value102-3
Percentage of GoodwillForeignCurrencyTranslationGainLoss14.0-6.4

us-gaap:OperatingSegments, ibm:GlobalTechnologyServices



Period End2020-03-312019-03-31
Value16716
Percentage of GoodwillForeignCurrencyTranslationGainLoss23.034.0

us-gaap:OperatingSegments, ibm:Systems



Period End2020-03-312019-03-31
Value193
Percentage of GoodwillForeignCurrencyTranslationGainLoss2.66.4

us-gaap:GoodwillPurchaseAccountingAdjustments



Period End2020-03-312019-03-312018-03-312017-03-312016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-31
Value120034-200-1-1-813048
Percentage of GoodwillPurchaseAccountingAdjustments100.00.00.0100.0100.0100.00.00.0100.0100.0100.0100.00.0100.0

us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, ibm:CloudAndCognitiveSoftware



Period End2020-03-312019-03-31
Value120
Percentage of GoodwillPurchaseAccountingAdjustments100.00.0

us-gaap:IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-31
Value-1-1-1-22140-1-3-10-3
Percentage of IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.00.0100.0

us-gaap:IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-30
Value0.00.00.00.00.00.00.00.00.00.00.00.00.00.0-0.01-0.08-0.09-0.040000000000000036-3.46-0.11-0.14-0.02999999999999997-0.09
Percentage of IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare0.00.00.00.00.00.00.00.00.00.00.00.00.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-30
Value0.00.00.00.00.00.00.00.00.00.00.00.00.00.0-0.01-0.08-0.09-0.040000000000000036-3.44-0.11-0.14-0.02999999999999997-0.09
Percentage of IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare0.00.00.00.00.00.00.00.00.00.00.00.00.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DerivativeInstrumentRisk, us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship

us-gaap:IncreaseDecreaseInDerivativeLiabilities

us-gaap:CurrencySwap, us-gaap:CashFlowHedging



Period End2020-03-31
Value-5700
Percentage of IncreaseDecreaseInDerivativeLiabilities100.0

us-gaap:ForeignExchangeContract, us-gaap:NetInvestmentHedging



Period End2020-03-31
Value9400
Percentage of IncreaseDecreaseInDerivativeLiabilities-164.9

us-gaap:IncreaseDecreaseInOperatingCapital



Period End2020-03-312019-03-312018-03-312017-03-312016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-03-312012-03-312011-03-312010-03-312009-03-31
Value-1162-1785-1658-964-23022054941659121601162244-43147-1033-1024
Percentage of IncreaseDecreaseInOperatingCapital100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncrementalCommonSharesAttributableToContingentlyIssuableShares



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-30
Value11101111110
Percentage of IncrementalCommonSharesAttributableToContingentlyIssuableShares100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncrementalCommonSharesAttributableToShareBasedPaymentArrangements



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-30
Value55332232342
Percentage of IncrementalCommonSharesAttributableToShareBasedPaymentArrangements100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:InterestCostsCapitalized



Period End2020-03-312019-03-312018-03-312017-03-312016-03-312014-12-312014-09-302013-12-312013-09-30
Value523011032
Percentage of InterestCostsCapitalized100.0100.0100.00.0100.0100.00.0100.0100.0

us-gaap:InterestCostsIncurred



Period End2020-03-312019-03-312018-03-312017-03-312016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-30
Value449391349293286262250251245253255241281259244
Percentage of InterestCostsIncurred100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:LeaseIncome



Period End2020-03-312019-09-302019-06-302019-03-31
Value310276269280
Percentage of LeaseIncome100.0100.0100.0100.0

us-gaap:MinorityInterestPeriodIncreaseDecrease



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-03-312016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-03-312012-03-312011-03-312010-03-31
Value-1585-863-7-25-145353543-46-1-15-22-2
Percentage of MinorityInterestPeriodIncreaseDecrease100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StatementEquityComponents

us-gaap:NoncontrollingInterest



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-03-312016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-03-312012-03-312011-03-312010-03-31
Value-1585-863-7-25-145353543-46-1-15-22-2
Percentage of MinorityInterestPeriodIncreaseDecrease100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:NetIncomeLossFromContinuingOperationsAvailableToCommonShareholdersBasic



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-30
Value11761673249915932692240216752726233217532854
Percentage of NetIncomeLossFromContinuingOperationsAvailableToCommonShareholdersBasic100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:NetIncomeLossFromContinuingOperationsAvailableToCommonShareholdersDiluted



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-30
Value11741673250015932692240116752726233117532854
Percentage of NetIncomeLossFromContinuingOperationsAvailableToCommonShareholdersDiluted100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:NetIncomeLossFromDiscontinuedOperationsAvailableToCommonShareholdersBasic



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-30
Value-1-1-1-22140-1-3-1
Percentage of NetIncomeLossFromDiscontinuedOperationsAvailableToCommonShareholdersBasic100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0

us-gaap:NetIncomeLossFromDiscontinuedOperationsAvailableToCommonShareholdersDiluted



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-30
Value-1-1-1-22140-1-3-1
Percentage of NetIncomeLossFromDiscontinuedOperationsAvailableToCommonShareholdersDiluted100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0

us-gaap:DerivativeInstrumentRisk, us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship

us-gaap:OciBeforeReclassificationsBeforeTaxAttributableToParent

us-gaap:ForeignExchangeContract, us-gaap:CashFlowHedging



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-31
Value-180-439-10-181-46-14961-70-96-33
Percentage of OciBeforeReclassificationsBeforeTaxAttributableToParent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ForeignExchangeContract, us-gaap:NetInvestmentHedging



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-31
Value485435-1481986627-204-507-724-282
Percentage of OciBeforeReclassificationsBeforeTaxAttributableToParent-269.4-99.11480.0-10.5-187.0-420.8-334.4724.3754.2854.5

us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship

ibm:CashFlowHedgingAndNetInvestmentHedging



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-31
Value304-4-154-33340477-143-577-820-315
Percentage of OciBeforeReclassificationsBeforeTaxAttributableToParent-168.90.91540.0184.0-87.0-320.1-234.4824.3854.2954.5

us-gaap:OperatingLeaseLeaseIncome



Period End2020-03-312019-09-302019-06-302019-03-31
Value71808290
Percentage of OperatingLeaseLeaseIncome100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentBeforeTaxPortionAttributableToParent



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-31
Value03-2-100-3-230-211
Percentage of OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentBeforeTaxPortionAttributableToParent0.0100.0100.0100.00.00.0100.0100.0100.00.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentBeforeTaxPortionAttributableToParent



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-31
Value-582-461-576-458-719-810-735-713-738-748-683-754-522
Percentage of OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentBeforeTaxPortionAttributableToParent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentBeforeTaxPortionAttributableToParent



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-31
Value-919-5095171-22-347-16789-38161-99-248239
Percentage of OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentBeforeTaxPortionAttributableToParent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditBeforeTax



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-30
Value1-3-3-3-18-19-19-22-22-21-28-27-25-24-25-25-26-26-29-29-29-20028-28-30-26037-37
Percentage of OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditBeforeTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StatementEquityComponents

us-gaap:OtherComprehensiveIncomeLossBeforeReclassificationsBeforeTax

ibm:AccumulatedDefinedBenefitPlansAdjustmentCurtailmentsAndSettlements



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-30
Value833126023-14105113
Percentage of OtherComprehensiveIncomeLossBeforeReclassificationsBeforeTax100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AccumulatedDefinedBenefitPlansAdjustmentNetPriorServiceCostCredit



Period End2020-03-312018-09-302018-06-302018-03-312017-09-302017-03-312015-09-302015-06-30
Value-400-10001
Percentage of OtherComprehensiveIncomeLossBeforeReclassificationsBeforeTax-50.00.00.00.00.0-0.00.033.3

us-gaap:AccumulatedDefinedBenefitPlansAdjustmentNetUnamortizedGainLoss



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-30
Value80116-4-1822144611178-147-293
Percentage of OtherComprehensiveIncomeLossBeforeReclassificationsBeforeTax100.00.03866.7-400.0-50.01366.70.050.01466.7-6100.0275.0780.0-2940.0-18.23100.0

us-gaap:AccumulatedGainLossNetCashFlowHedgeParent



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-30
Value-180-439-6-352-46-14961-70-96
Percentage of OtherComprehensiveIncomeLossBeforeReclassificationsBeforeTax-2250.0-14633.3-200.0-35200.0-2300.0-2483.30.0-3500.0-3200.0

us-gaap:AccumulatedNetUnrealizedInvestmentGainLoss



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-30
Value03-2-100-2-14-1-11-36-102-15
Percentage of OtherComprehensiveIncomeLossBeforeReclassificationsBeforeTax0.0100.0-66.7-100.00.00.00.0-50.0133.3100.0-25.010.0-720.0-927.3-500.0

us-gaap:StatementEquityComponents

us-gaap:OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax

ibm:AccumulatedDefinedBenefitPlansAdjustmentCurtailmentsAndSettlements



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-30
Value623114012-136372
Percentage of OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AccumulatedDefinedBenefitPlansAdjustment



Period End2020-03-312019-03-312018-03-312017-03-312016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-03-312012-12-31
Value3-2040-91-1922665-46-638011021319112-5205
Percentage of OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax50.0-200.00.0-4000.0-3033.30.085.73250.00.00.00.00.00.00.00.00.0

us-gaap:AccumulatedDefinedBenefitPlansAdjustmentNetPriorServiceCostCredit



Period End2020-03-312018-09-302018-06-302018-03-312017-09-302017-03-312015-09-302015-06-30
Value-300-10001
Percentage of OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax-50.00.00.00.00.0-0.00.050.0

us-gaap:AccumulatedDefinedBenefitPlansAdjustmentNetUnamortizedGainLoss



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-30
Value6092-2-159112741651-94-162
Percentage of OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax100.00.03066.7-200.0-100.01475.00.0100.01350.0-4100.0200.0850.0-3133.3-14.33100.0

us-gaap:AccumulatedGainLossNetCashFlowHedgeParent



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-30
Value-135-329-4-268-35-11151-50-71
Percentage of OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax-2250.0-16450.0-133.3-26800.0-3500.0-2775.00.0-5000.0-3550.0

us-gaap:AccumulatedNetUnrealizedInvestmentGainLoss



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-03-312012-12-31
Value02-1-100-202-1-11-2219-63-1020-19010-2-1-4
Percentage of OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax0.0100.0-33.3-100.00.00.00.00.0100.0100.0-33.316.7-733.30.0-900.0-500.00.00.00.00.00.00.00.00.0

us-gaap:AccumulatedOtherComprehensiveIncome



Period End2020-03-312019-03-312018-03-312017-03-312016-03-31
Value-1174-99-65284218
Percentage of OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax-19566.7-9900.00.0-28400.07266.7

us-gaap:AccumulatedTranslationAdjustment



Period End2020-03-312019-03-312018-03-312017-03-312016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-03-312012-12-31
Value-1041172-115270505-128-1044169-718-984-1397358-51-421-489-206
Percentage of OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax-17350.017200.00.0-27000.016833.30.0-14914.38450.00.00.00.00.00.00.00.00.0

us-gaap:StatementEquityComponents

us-gaap:OtherComprehensiveIncomeLossBeforeReclassificationsTax

ibm:AccumulatedDefinedBenefitPlansAdjustmentCurtailmentsAndSettlements



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-30
Value310002011014241
Percentage of OtherComprehensiveIncomeLossBeforeReclassificationsTax100.0100.00.00.00.0100.00.0100.0100.00.0100.0100.0100.0100.0100.0

us-gaap:AccumulatedDefinedBenefitPlansAdjustmentNetPriorServiceCostCredit



Period End2020-03-312018-09-302018-06-302018-03-312017-09-302017-03-312015-09-302015-06-30
Value-1000000.00.00.00.00.00.00.00.0
Percentage of OtherComprehensiveIncomeLossBeforeReclassificationsTax-33.30.00.00.00.00.00.00.0

us-gaap:AccumulatedDefinedBenefitPlansAdjustmentNetUnamortizedGainLoss



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-30
Value2025-1-123101720527-53-131
Percentage of OtherComprehensiveIncomeLossBeforeReclassificationsTax66.70.00.00.00.01150.00.00.01700.00.0500.0675.0-2650.0-25.03100.0

us-gaap:AccumulatedGainLossNetCashFlowHedgeParent



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-30
Value-45-110-2-84-11-389-20-24
Percentage of OtherComprehensiveIncomeLossBeforeReclassificationsTax-1500.0-11000.00.00.00.0-1900.00.0-2000.0-2400.0

us-gaap:AccumulatedNetUnrealizedInvestmentGainLoss



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-30
Value010000-1-11000-14-39-6
Percentage of OtherComprehensiveIncomeLossBeforeReclassificationsTax0.0100.00.00.00.00.00.0-100.0100.00.00.00.0-700.0-975.0-600.0

us-gaap:StatementEquityComponents

us-gaap:OtherComprehensiveIncomeLossBeforeTax

us-gaap:AccumulatedDefinedBenefitPlansAdjustment



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-30
Value582461576458719810735713738748683754522807894
Percentage of OtherComprehensiveIncomeLossBeforeTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AccumulatedGainLossNetCashFlowHedgeParent



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-30
Value-9049-175-254-182857-143-272
Percentage of OtherComprehensiveIncomeLossBeforeTax-15.510.6-30.4-55.5-2.535.21.0-20.1-36.9

us-gaap:AccumulatedNetUnrealizedInvestmentGainLoss



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-30
Value03-2-100-3-230-211-101-15
Percentage of OtherComprehensiveIncomeLossBeforeTax0.00.7-0.3-0.20.00.0-0.4-0.30.40.0-0.30.10.2-12.5-1.7

us-gaap:AccumulatedOtherComprehensiveIncome



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-30
Value-4274405375678748573658432779632617406-547472
Percentage of OtherComprehensiveIncomeLossBeforeTax-73.40.970.381.994.392.378.092.358.5104.192.581.877.8-67.852.8

us-gaap:AccumulatedTranslationAdjustment



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-30
Value-919-5095171-22-347-16789-38161-99-248239-1015102
Percentage of OtherComprehensiveIncomeLossBeforeTax-157.9-110.40.937.3-3.1-42.8-22.712.5-5.121.5-14.5-32.945.8-125.811.4

us-gaap:OtherComprehensiveIncomeLossBeforeTaxPortionAttributableToParent



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-31
Value-4274405375678748573658432779632617406
Percentage of OtherComprehensiveIncomeLossBeforeTaxPortionAttributableToParent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationBeforeTaxParent



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-30
Value-9049-175-254-182857-143-272
Percentage of OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationBeforeTaxParent100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAndTax



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-30
Value-180-439-6-352-46-14961-70-96
Percentage of OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAndTax100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationBeforeTax



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-30
Value-91-488168-98-28-4345473176
Percentage of OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationBeforeTax100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossFinalizationOfPensionAndNonPensionPostretirementPlanValuationBeforeTax



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302012-09-302012-06-302011-09-302011-06-30
Value833126023-141051411344784-300-2004
Percentage of OtherComprehensiveIncomeLossFinalizationOfPensionAndNonPensionPostretirementPlanValuationBeforeTax100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.0100.00.00.0100.0

us-gaap:OtherComprehensiveIncomeLossNetOfTax



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-03-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-30
Value-686-245340308470294430688440394608-1451-72441133-6897-6097874463369804-309293778-383770-9891010
Percentage of OtherComprehensiveIncomeLossNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StatementEquityComponents

us-gaap:AccumulatedDefinedBenefitPlansAdjustment



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-03-312012-03-31
Value422335430330527584537479461507461471335-1346531585492-60094104184393756586363
Percentage of OtherComprehensiveIncomeLossNetOfTax-61.5-136.7126.5107.1112.1198.6124.90.00.073.7104.8119.555.192.8-73.3142.31490.987.1-67.353.198.4111.5200.047.1

us-gaap:AccumulatedGainLossNetCashFlowHedgeParent



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-30
Value-6736-129-193-1421410-94-183
Percentage of OtherComprehensiveIncomeLossNetOfTax9.8-14.7-37.9-62.7-3.072.82.30.00.0

us-gaap:AccumulatedNetUnrealizedInvestmentGainLoss



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-03-312012-03-31
Value02-1-100-2-120-11072-62-1020-19103-406
Percentage of OtherComprehensiveIncomeLossNetOfTax-0.0-0.8-0.3-0.30.00.0-0.50.00.00.0-0.20.30.0-5.08.6-2.460.60.3-0.20.00.7-0.10.00.8

us-gaap:AccumulatedOtherComprehensiveIncome



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-03-312012-03-31
Value-686-245340308470294430669520688440394608-1451-72441133-6897-6097864463369293770
Percentage of OtherComprehensiveIncomeLossNetOfTax100.0100.0100.0100.0100.0100.0100.00.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.099.9100.0100.0100.0100.0

us-gaap:AccumulatedTranslationAdjustment



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-03-312012-03-31
Value-1041-61842172-44-505-115284240270-49-154505-128-1043169-718-984-1397358-51-421-489398
Percentage of OtherComprehensiveIncomeLossNetOfTax151.7252.212.455.8-9.4-171.8-26.70.00.039.2-11.1-39.183.18.8144.141.1-2175.814.3229.445.5-11.4-12.5-166.951.7

us-gaap:Parent



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-03-312016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-03-312012-03-31
Value-686-245340308470294430688608-1451-72441133-6897-6097864463369293770
Percentage of OtherComprehensiveIncomeLossNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.099.9100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-31
Value-686-245340308470294430669520688440394608
Percentage of OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansNetUnamortizedGainLossArisingDuringPeriodBeforeTax



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-30
Value80116-4-1822144611178-147-2977-293-77-9847115325669-105210-15170-60585
Percentage of OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansNetUnamortizedGainLossArisingDuringPeriodBeforeTax100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossBeforeTax



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-30
Value-570-461-460-464-737-741-753-733-713-710-696-693-690-825-823-821-835-608-635-639-649-6122872-864-886-4303613-613
Percentage of OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossBeforeTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StatementEquityComponents

us-gaap:OtherComprehensiveIncomeLossTax

us-gaap:AccumulatedDefinedBenefitPlansAdjustment



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-30
Value160127147128191226199235278241222283187275310
Percentage of OtherComprehensiveIncomeLossTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AccumulatedGainLossNetCashFlowHedgeParent



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-30
Value-2312-45-61-471-3-49-90
Percentage of OtherComprehensiveIncomeLossTax-14.49.4-30.6-47.7-2.131.4-1.5-20.9-32.4

us-gaap:AccumulatedNetUnrealizedInvestmentGainLoss



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-30
Value010000-1-110-100-39-6
Percentage of OtherComprehensiveIncomeLossTax0.00.80.00.00.00.0-0.5-0.40.40.0-0.50.00.0-14.2-1.9

us-gaap:AccumulatedOtherComprehensiveIncome



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-30
Value2602496467209455143-11-8892192223-20217662
Percentage of OtherComprehensiveIncomeLossTax162.5196.143.552.3109.4201.371.9-4.7-31.738.286.578.8-108.064.020.0

us-gaap:AccumulatedTranslationAdjustment



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-30
Value122109-37022158-51-195-278-108-50-95-26628-67
Percentage of OtherComprehensiveIncomeLossTax76.285.8-25.20.011.569.9-25.6-83.0-100.0-44.8-22.5-33.6-142.210.2-21.6

us-gaap:OtherComprehensiveIncomeLossTaxPortionAttributableToParent1



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-31
Value2602496467209455143-11-8892192223-202
Percentage of OtherComprehensiveIncomeLossTaxPortionAttributableToParent1100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-31
Value03-2-100-2-14-1-11-3631-102-1532-30010-430-311-36-6-7-7
Percentage of OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax0.0100.0100.0100.00.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.00.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherPostretirementBenefitExpense



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-312009-09-302009-06-30
Value525353544949516160616461606867716770677471808689848788868786878888
Percentage of OtherPostretirementBenefitExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PaymentsOfDividendsCommonStock



Period End2020-03-312019-03-312018-03-312017-03-312016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-03-312012-03-312011-03-312010-03-312009-03-31
Value1440139713821321125012611270127810881089109010969901025948870795718675
Percentage of PaymentsOfDividendsCommonStock100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PaymentsRelatedToTaxWithholdingForShareBasedCompensation



Period End2020-03-312019-03-312018-03-312017-03-312016-03-31
Value4461535027
Percentage of PaymentsRelatedToTaxWithholdingForShareBasedCompensation100.0100.0100.0100.0100.0

us-gaap:PaymentsToAcquireBusinessesNetOfCashAcquired



Period End2020-03-312019-03-312018-03-312017-03-312016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-03-312012-03-312011-03-312010-03-312009-03-31
Value13171109259025281135601486473392644945813195182421
Percentage of PaymentsToAcquireBusinessesNetOfCashAcquired100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PensionAndOtherPostretirementBenefitExpense



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-312009-09-302009-06-30
Value636512494491754758788653719725486516499619573560820490475468541711705706754698548616444458517333319408346317
Percentage of PensionAndOtherPostretirementBenefitExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PensionExpense



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-312009-09-302009-06-30
Value584459441437705709738592659664421455439505493749408398474631636674612459532357370432246234321258229
Percentage of PensionExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType

country:US, us-gaap:PensionPlansDefinedBenefit



Period End2020-03-312019-03-31
Value199115
Percentage of PensionExpense34.126.3

us-gaap:ForeignPlan, us-gaap:PensionPlansDefinedBenefit



Period End2020-03-312019-03-31
Value385322
Percentage of PensionExpense65.973.7

us-gaap:IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperations

us-gaap:ProceedsFromDivestitureOfBusinesses

ibm:SelectStandaloneCloudAndCognitiveSoftwareProducts



Period End2020-03-31
Value164
Percentage of ProceedsFromDivestitureOfBusinesses100.0

us-gaap:ProceedsFromDivestitureOfBusinessesNetOfCashDivested



Period End2020-03-312019-03-312017-03-312016-03-312015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-03-31
Value2633-1476219186881173915010
Percentage of ProceedsFromDivestitureOfBusinessesNetOfCashDivested100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProceedsFromIssuanceOfLongTermDebtAndCapitalSecuritiesNet



Period End2020-03-312019-03-312018-03-312017-03-312016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-03-312012-03-312011-03-312010-03-312009-03-31
Value60555979217028878085183993647522902538245522487562872685390610541190913
Percentage of ProceedsFromIssuanceOfLongTermDebtAndCapitalSecuritiesNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProceedsFromPaymentsForOtherFinancingActivities



Period End2020-03-312019-03-312018-03-312017-03-31
Value1391654
Percentage of ProceedsFromPaymentsForOtherFinancingActivities100.0100.0100.0100.0

us-gaap:ProceedsFromRepaymentsOfShortTermDebtMaturingInThreeMonthsOrLess



Period End2020-03-312019-03-312018-03-312017-03-312016-03-31
Value58621412-880-910
Percentage of ProceedsFromRepaymentsOfShortTermDebtMaturingInThreeMonthsOrLess100.0100.0100.0100.0100.0

us-gaap:ProceedsFromSaleMaturityAndCollectionsOfInvestments



Period End2020-03-312019-03-312018-03-312017-03-312016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-03-312012-03-312011-03-312010-03-312009-03-31
Value9386748109811169717661648816728523634608838116968114812319912
Percentage of ProceedsFromSaleMaturityAndCollectionsOfInvestments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProceedsFromSaleOfPropertyPlantAndEquipment



Period End2020-03-312019-03-312018-03-312017-03-312016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-03-312012-03-312011-03-31
Value468110358129561321354779142109741161239587
Percentage of ProceedsFromSaleOfPropertyPlantAndEquipment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FinancingReceivablePortfolioSegment

us-gaap:ProvisionForLoanAndLeaseLosses

ibm:FinanceLeasesPortfolioSegmentAndLoansReceivable



Period End2020-03-312019-03-312018-03-312017-03-31
Value9-1512
Percentage of ProvisionForLoanAndLeaseLosses100.0100.0100.0100.0

us-gaap:StatementGeographical, us-gaap:FinancingReceivablePortfolioSegment

srt:AsiaPacific, ibm:FinanceLeasesPortfolioSegmentAndLoansReceivable



Period End2020-03-312019-03-31
Value-1000000.00.0
Percentage of ProvisionForLoanAndLeaseLosses-11.1-0.0

us-gaap:EMEA, ibm:FinanceLeasesPortfolioSegmentAndLoansReceivable



Period End2020-03-312019-03-31
Value7-5
Percentage of ProvisionForLoanAndLeaseLosses77.8500.0

us-gaap:StatementEquityComponents

us-gaap:ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodBeforeTax

us-gaap:AccumulatedDefinedBenefitPlansAdjustmentNetPriorServiceCostCredit



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-30
Value-13331819192222212827252525
Percentage of ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodBeforeTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AccumulatedDefinedBenefitPlansAdjustmentNetUnamortizedGainLoss



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-30
Value-570-461-460-464-737-741-753-733-713-710-696-693-690-823-821
Percentage of ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodBeforeTax57000.0-15366.7-15333.3-15466.7-4094.4-3900.0-3963.2-3331.8-3240.9-3381.0-2485.7-2566.7-2760.0-3292.0-3284.0

us-gaap:StatementEquityComponents

us-gaap:ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax

us-gaap:AccumulatedDefinedBenefitPlansAdjustment



Period End2020-03-312019-03-312018-03-312017-03-312016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-03-312012-12-31
Value-419-333-537-466-426-575-525-520-538-370-410-408-417-565-574-405
Percentage of ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AccumulatedDefinedBenefitPlansAdjustmentNetPriorServiceCostCredit



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-30
Value-11321313141514151917161616
Percentage of ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax0.20.00.0-0.60.00.0-2.60.00.0-3.20.00.0-3.8-3.0-3.1

us-gaap:AccumulatedDefinedBenefitPlansAdjustmentNetUnamortizedGainLoss



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-30
Value-412-333-337-334-540-534-550-491-445-481-471-431-442-542-536
Percentage of ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax98.30.00.0100.30.00.0102.40.00.0103.20.00.0103.8103.2103.1

us-gaap:AccumulatedGainLossNetCashFlowHedgeParent



Period End2020-03-312019-03-312018-03-31
Value-68-7541
Percentage of ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax16.222.5-7.6

us-gaap:AccumulatedOtherComprehensiveIncome



Period End2020-03-312019-03-312018-03-312017-03-312016-03-31
Value-488-407-495-404-391
Percentage of ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax116.5122.292.286.791.8

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

us-gaap:ReclassificationFromAociCurrentPeriodBeforeTaxAttributableToParent

us-gaap:ForeignExchangeContract, us-gaap:CashFlowHedging, ibm:CostOfFinancing



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value-7-20-24-29-18-20-18
Percentage of ReclassificationFromAociCurrentPeriodBeforeTaxAttributableToParent100.0100.0100.0100.0100.0100.0100.0

us-gaap:ForeignExchangeContract, us-gaap:CashFlowHedging, ibm:CostOfServices



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-31
Value10222010191920188
Percentage of ReclassificationFromAociCurrentPeriodBeforeTaxAttributableToParent-142.9-110.0-83.3-34.5-5.6-45.0-105.60.00.00.0

us-gaap:ForeignExchangeContract, us-gaap:CashFlowHedging, ibm:OtherIncomeExpense



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-31
Value-89-447202-87-8-3971046414665
Percentage of ReclassificationFromAociCurrentPeriodBeforeTaxAttributableToParent1271.42235.0-841.7300.044.41985.0-577.80.00.00.0

us-gaap:ForeignExchangeContract, us-gaap:CashFlowHedging, us-gaap:CostOfSales



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-31
Value91011188-6-1711011
Percentage of ReclassificationFromAociCurrentPeriodBeforeTaxAttributableToParent-128.6-50.0-45.8-62.1-44.430.094.40.00.00.0

us-gaap:ForeignExchangeContract, us-gaap:CashFlowHedging, us-gaap:InterestExpense



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-30
Value-18-61-51-33-36-38-16-7-7
Percentage of ReclassificationFromAociCurrentPeriodBeforeTaxAttributableToParent257.1305.0212.5113.8200.0190.088.90.00.0

us-gaap:ForeignExchangeContract, us-gaap:CashFlowHedging, us-gaap:SellingGeneralAndAdministrativeExpenses



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-31
Value101112227-3-18-6820
Percentage of ReclassificationFromAociCurrentPeriodBeforeTaxAttributableToParent-142.9-55.0-50.0-75.9-38.915.0100.00.00.00.0

us-gaap:InterestRateContract, us-gaap:CashFlowHedging, us-gaap:InterestExpense



Period End2020-03-312019-09-302019-06-302018-03-312017-03-31
Value-3-3-2-34-7
Percentage of ReclassificationFromAociCurrentPeriodBeforeTaxAttributableToParent42.915.08.3188.90.0

us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship

ibm:CashFlowHedgingAndNetInvestmentHedging



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-31
Value-91-488168-98-28-434547317698
Percentage of ReclassificationFromAociCurrentPeriodBeforeTaxAttributableToParent1300.02440.0-700.0337.9155.62170.0-300.00.00.00.0

us-gaap:StatementEquityComponents

us-gaap:ReclassificationFromAociCurrentPeriodTax

us-gaap:AccumulatedDefinedBenefitPlansAdjustmentNetPriorServiceCostCredit



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-30
Value1301555787910989
Percentage of ReclassificationFromAociCurrentPeriodTax100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AccumulatedDefinedBenefitPlansAdjustmentNetUnamortizedGainLoss



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-30
Value-157-128-123-130-196-207-203-242-268-229-225-263-248-281-285
Percentage of ReclassificationFromAociCurrentPeriodTax-15700.0-4266.70.0-13000.0-3920.0-4140.0-4060.0-3457.1-3350.0-3271.4-2500.0-2630.0-2755.6-3512.5-3166.7

us-gaap:RepaymentsOfLongTermDebtAndCapitalSecurities



Period End2020-03-312019-03-312018-03-312017-03-312016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-03-312012-03-312011-03-312010-03-312009-03-31
Value52851768329515312211233926163928241536300130115072273857848153923823478
Percentage of RepaymentsOfLongTermDebtAndCapitalSecurities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:SalesTypeAndDirectFinancingLeasesInterestIncome



Period End2020-03-312019-09-302019-06-302019-03-31
Value74717379
Percentage of SalesTypeAndDirectFinancingLeasesInterestIncome100.0100.0100.0100.0

us-gaap:SalesTypeLeaseRevenue



Period End2020-03-312019-09-302019-06-302019-03-31
Value211188179149
Percentage of SalesTypeLeaseRevenue100.0100.0100.0100.0

us-gaap:SalesTypeLeaseSellingProfitLoss



Period End2020-03-312019-09-302019-06-302019-03-31
Value13511310594
Percentage of SalesTypeLeaseSellingProfitLoss100.0100.0100.0100.0

us-gaap:SharesPaidForTaxWithholdingForShareBasedCompensation



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-03-312016-03-31
Value310454.0241779.0681109.0454710.031408.0620961.0325635.0289364.0216803.0
Percentage of SharesPaidForTaxWithholdingForShareBasedCompensation100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StandardProductWarrantyAccrualPayments



Period End2020-03-312019-06-302019-03-312018-06-302018-03-312017-03-312016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-03-312012-03-312011-03-312010-03-31
Value26301113132414149474951468087859593102105100
Percentage of StandardProductWarrantyAccrualPayments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StandardProductWarrantyAccrualPreexistingIncreaseDecrease



Period End2020-03-312019-06-302019-03-312018-06-302018-03-312017-03-312016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-03-312012-03-312011-03-312010-03-31
Value-60-9-9-141-23-5-110-126-211-319-332
Percentage of StandardProductWarrantyAccrualPreexistingIncreaseDecrease100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StandardProductWarrantyAccrualWarrantiesIssued



Period End2020-03-312019-06-302019-03-312018-06-302018-03-312017-03-312016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-03-312012-03-312011-03-312010-03-31
Value202611037253227563547355464685410871889394
Percentage of StandardProductWarrantyAccrualWarrantiesIssued100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StockIssuedDuringPeriodSharesShareBasedCompensation



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-03-312016-03-31
Value001101111
Percentage of StockIssuedDuringPeriodSharesShareBasedCompensation100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StockIssuedDuringPeriodValueShareBasedCompensation



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-03-312016-03-31
Value197404117137160115146169185
Percentage of StockIssuedDuringPeriodValueShareBasedCompensation100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StatementEquityComponents

us-gaap:CommonStockIncludingAdditionalPaidInCapital



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-03-312016-03-31
Value197404117137160115146169185
Percentage of StockIssuedDuringPeriodValueShareBasedCompensation100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:Parent



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-03-312016-03-31
Value197404117137160115146169185
Percentage of StockIssuedDuringPeriodValueShareBasedCompensation100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:VariableLeaseIncome



Period End2020-03-312019-09-302019-06-302019-03-31
Value3012918
Percentage of VariableLeaseIncome100.0100.0100.0100.0

ibm:AccrualForWorkforceReductions



Period End2019-12-312018-12-31
Value950941
Percentage of AccrualForWorkforceReductions100.0100.0

ibm:AccruedLiabilitiesAndOtherLiabilitiesCurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302015-12-31
Value47774357423544583952394137004059475445104352459445224705534654804353
Percentage of AccruedLiabilitiesAndOtherLiabilitiesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ConsolidationItems

ibm:CapitalExpenditureAndInvestmentsInIntangibles

us-gaap:OperatingSegments



Period End2019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value250136123265376438303921379642334325
Percentage of CapitalExpenditureAndInvestmentsInIntangibles100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, ibm:CloudAndCognitiveSoftware



Period End2019-12-312018-12-312017-12-31
Value515469467
Percentage of CapitalExpenditureAndInvestmentsInIntangibles20.613.014.3

us-gaap:OperatingSegments, ibm:GlobalBusinessServices



Period End2019-12-312018-12-312017-12-312016-12-312015-12-312014-12-31
Value485750558679
Percentage of CapitalExpenditureAndInvestmentsInIntangibles1.91.61.51.52.22.0

us-gaap:OperatingSegments, ibm:GlobalFinancing



Period End2019-12-312018-12-312017-12-312016-12-312015-12-312014-12-31
Value57274364380356482
Percentage of CapitalExpenditureAndInvestmentsInIntangibles2.37.611.110.19.312.3

us-gaap:OperatingSegments, ibm:GlobalTechnologyServices



Period End2019-12-312018-12-312017-12-31
Value157525692193
Percentage of CapitalExpenditureAndInvestmentsInIntangibles63.071.167.2

us-gaap:OperatingSegments, ibm:Systems



Period End2019-12-312018-12-312017-12-312016-12-312015-12-312014-12-31
Value305241189453321627
Percentage of CapitalExpenditureAndInvestmentsInIntangibles12.26.75.812.08.416.0

ibm:CapitalLeasesGuaranteedResidualValuesOfLeasedProperty



Period End2019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value5361687285909189100
Percentage of CapitalLeasesGuaranteedResidualValuesOfLeasedProperty100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FinancingReceivablePortfolioSegment

us-gaap:FinanceLeasesPortfolioSegment



Period End2019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value5361687285909189100
Percentage of CapitalLeasesGuaranteedResidualValuesOfLeasedProperty100.0100.0100.0100.0100.0100.0100.0100.0100.0

ibm:CapitalLeasesUnguaranteedResidualValuesOfLeasedProperty



Period End2019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value652565582566589549575558630
Percentage of CapitalLeasesUnguaranteedResidualValuesOfLeasedProperty100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FinancingReceivablePortfolioSegment

us-gaap:FinanceLeasesPortfolioSegment



Period End2019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302015-12-31
Value652565582566589549575558630567570574585630595645
Percentage of CapitalLeasesUnguaranteedResidualValuesOfLeasedProperty100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.00.00.00.00.0

ibm:CashCollateralRehypothecated



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312011-06-302011-03-312010-12-31
Value0000140000000000000000000000000419
Percentage of CashCollateralRehypothecated0.00.00.00.0100.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0100.0100.0100.0

ibm:DebtInstrumentCarryingAmountExcludingFinanceLeaseObligations



Period End2020-03-312019-12-312018-12-31
Value611706200343155
Percentage of DebtInstrumentCarryingAmountExcludingFinanceLeaseObligations100.0100.0100.0

us-gaap:Currency

currency:EUR



Period End2019-12-312018-12-31
Value1430610011
Percentage of DebtInstrumentCarryingAmountExcludingFinanceLeaseObligations23.123.2

currency:GBP



Period End2019-12-312018-12-31
Value13901338
Percentage of DebtInstrumentCarryingAmountExcludingFinanceLeaseObligations2.23.1

currency:JPY



Period End2019-12-312018-12-31
Value13391325
Percentage of DebtInstrumentCarryingAmountExcludingFinanceLeaseObligations2.23.1

ibm:OtherCurrency



Period End2019-12-312018-12-31
Value375390
Percentage of DebtInstrumentCarryingAmountExcludingFinanceLeaseObligations0.60.9

ibm:DeferredTaxAssetsLeases



Period End2019-12-312018-12-31
Value1729103
Percentage of DeferredTaxAssetsLeases100.0100.0

ibm:DeferredTaxAssetsOperatingLossCarryforwardsAndTaxCreditCarryforwardsDomestic



Period End2019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-31
Value125996471816761066858982954914948859
Percentage of DeferredTaxAssetsOperatingLossCarryforwardsAndTaxCreditCarryforwardsDomestic100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

ibm:DeferredTaxAssetsOperatingLossCarryforwardsAndTaxCreditCarryforwardsForeign



Period End2019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-31
Value8369031024816825686651681752758680
Percentage of DeferredTaxAssetsOperatingLossCarryforwardsAndTaxCreditCarryforwardsForeign100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

ibm:DeferredTaxLiabilitiesDeferredExpenseTransitionCosts



Period End2019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-31
Value233233254351395374424440
Percentage of DeferredTaxLiabilitiesDeferredExpenseTransitionCosts100.0100.0100.0100.0100.0100.0100.0100.0

ibm:DeferredTaxLiabilitiesGILTIDeferredTaxes



Period End2019-12-312018-12-31
Value19081927
Percentage of DeferredTaxLiabilitiesGILTIDeferredTaxes100.0100.0

ibm:DeferredTaxLiabilitiesTaxDeferredExpenseCompensationAndBenefitsPensionAndPostretirementBenefits



Period End2019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-31
Value10024554834062522051219257551338389
Percentage of DeferredTaxLiabilitiesTaxDeferredExpenseCompensationAndBenefitsPensionAndPostretirementBenefits100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

ibm:DefinedBenefitAllPlanChangeInDiscountRateBenefitObligationPeriodIncreaseDecrease



Period End2019-12-312018-12-31
Value8932-4032
Percentage of DefinedBenefitAllPlanChangeInDiscountRateBenefitObligationPeriodIncreaseDecrease100.0100.0

us-gaap:RetirementPlanName, us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanTaxStatus, us-gaap:RetirementPlanType

ibm:DefinedBenefitPlanFairValueOfNetUnsettledTransactionsOnPurchasesAndSalesOfPlanAssets

ibm:PersonalPensionPlan, country:US, us-gaap:QualifiedPlan, us-gaap:PensionPlansDefinedBenefit



Period End2019-12-312018-12-312017-12-312016-12-31
Value-6-230-145-205
Percentage of DefinedBenefitPlanFairValueOfNetUnsettledTransactionsOnPurchasesAndSalesOfPlanAssets100.0100.0100.0100.0

us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType

us-gaap:ForeignPlan, us-gaap:PensionPlansDefinedBenefit



Period End2019-12-312018-12-312017-12-312016-12-31
Value-26-32-52-48
Percentage of DefinedBenefitPlanFairValueOfNetUnsettledTransactionsOnPurchasesAndSalesOfPlanAssets433.313.935.923.4

us-gaap:DefinedBenefitPlanByPlanAssetCategories, us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:RetirementPlanName, us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanTaxStatus, us-gaap:RetirementPlanType

ibm:DefinedBenefitPlanFairValueOfPlanAssetsGross

ibm:CashAndShortTermInvestments, us-gaap:FairValueInputsLevel1, ibm:PersonalPensionPlan, country:US, us-gaap:QualifiedPlan, us-gaap:PensionPlansDefinedBenefit



Period End2019-12-312018-12-312017-12-312016-12-31
Value545510055
Percentage of DefinedBenefitPlanFairValueOfPlanAssetsGross100.0100.0100.0100.0

ibm:CashAndShortTermInvestments, us-gaap:FairValueInputsLevel2, ibm:PersonalPensionPlan, country:US, us-gaap:QualifiedPlan, us-gaap:PensionPlansDefinedBenefit



Period End2019-12-312018-12-312017-12-312016-12-31
Value848102019031927
Percentage of DefinedBenefitPlanFairValueOfPlanAssetsGross1570.41854.51903.03503.6

ibm:GovernmentDebtSecurities, us-gaap:FairValueInputsLevel2, ibm:PersonalPensionPlan, country:US, us-gaap:QualifiedPlan, us-gaap:PensionPlansDefinedBenefit



Period End2019-12-312018-12-312017-12-312016-12-31
Value21134196611976214897
Percentage of DefinedBenefitPlanFairValueOfPlanAssetsGross39137.035747.319762.027085.5

us-gaap:AssetBackedSecurities, us-gaap:FairValueInputsLevel2, ibm:PersonalPensionPlan, country:US, us-gaap:QualifiedPlan, us-gaap:PensionPlansDefinedBenefit



Period End2019-12-312018-12-312017-12-312016-12-31
Value630635619652
Percentage of DefinedBenefitPlanFairValueOfPlanAssetsGross1166.71154.5619.01185.5

us-gaap:CorporateDebtSecurities, us-gaap:FairValueInputsLevel2, ibm:PersonalPensionPlan, country:US, us-gaap:QualifiedPlan, us-gaap:PensionPlansDefinedBenefit



Period End2019-12-312018-12-312017-12-312016-12-31
Value16666158491786418063
Percentage of DefinedBenefitPlanFairValueOfPlanAssetsGross30863.028816.417864.032841.8

us-gaap:CorporateDebtSecurities, us-gaap:FairValueInputsLevel3, ibm:PersonalPensionPlan, country:US, us-gaap:QualifiedPlan, us-gaap:PensionPlansDefinedBenefit



Period End2019-12-312018-12-312017-12-312016-12-31
Value518359372101
Percentage of DefinedBenefitPlanFairValueOfPlanAssetsGross959.3652.7372.0183.6

us-gaap:DefinedBenefitPlanDerivative, us-gaap:FairValueInputsLevel1, ibm:PersonalPensionPlan, country:US, us-gaap:QualifiedPlan, us-gaap:PensionPlansDefinedBenefit



Period End2019-12-312018-12-312017-12-31
Value0321
Percentage of DefinedBenefitPlanFairValueOfPlanAssetsGross0.05.521.0

us-gaap:DefinedBenefitPlanDerivative, us-gaap:FairValueInputsLevel2, ibm:PersonalPensionPlan, country:US, us-gaap:QualifiedPlan, us-gaap:PensionPlansDefinedBenefit



Period End2019-12-312018-12-312017-12-31
Value6-1-4
Percentage of DefinedBenefitPlanFairValueOfPlanAssetsGross11.1-1.8-4.0

us-gaap:DefinedBenefitPlanEquitySecurities, us-gaap:FairValueInputsLevel1, ibm:PersonalPensionPlan, country:US, us-gaap:QualifiedPlan, us-gaap:PensionPlansDefinedBenefit



Period End2019-12-312018-12-312017-12-31
Value194315382215
Percentage of DefinedBenefitPlanFairValueOfPlanAssetsGross3598.12796.42215.0

us-gaap:EquityFunds, us-gaap:FairValueInputsLevel1, ibm:PersonalPensionPlan, country:US, us-gaap:QualifiedPlan, us-gaap:PensionPlansDefinedBenefit



Period End2019-12-312018-12-312017-12-312016-12-31
Value856510893
Percentage of DefinedBenefitPlanFairValueOfPlanAssetsGross157.4118.2108.0169.1

us-gaap:FixedIncomeFunds, us-gaap:FairValueInputsLevel1, ibm:PersonalPensionPlan, country:US, us-gaap:QualifiedPlan, us-gaap:PensionPlansDefinedBenefit



Period End2019-12-312018-12-312017-12-312016-12-31
Value386421338359
Percentage of DefinedBenefitPlanFairValueOfPlanAssetsGross714.8765.5338.0652.7

us-gaap:DefinedBenefitPlanByPlanAssetCategories, us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType

ibm:CashAndShortTermInvestments, us-gaap:FairValueInputsLevel1, us-gaap:ForeignPlan, us-gaap:PensionPlansDefinedBenefit



Period End2019-12-312018-12-312017-12-312016-12-31
Value204322221294
Percentage of DefinedBenefitPlanFairValueOfPlanAssetsGross377.8585.5221.0534.5

ibm:CashAndShortTermInvestments, us-gaap:FairValueInputsLevel2, us-gaap:ForeignPlan, us-gaap:PensionPlansDefinedBenefit



Period End2019-12-312018-12-312017-12-312016-12-31
Value644431606707
Percentage of DefinedBenefitPlanFairValueOfPlanAssetsGross1192.6783.6606.01285.5

ibm:GovernmentDebtSecurities, us-gaap:FairValueInputsLevel2, us-gaap:ForeignPlan, us-gaap:PensionPlansDefinedBenefit



Period End2019-12-312018-12-312017-12-312016-12-31
Value102888951101037577
Percentage of DefinedBenefitPlanFairValueOfPlanAssetsGross19051.916274.510103.013776.4

ibm:GovernmentDebtSecurities, us-gaap:FairValueInputsLevel3, us-gaap:ForeignPlan, us-gaap:PensionPlansDefinedBenefit



Period End2019-12-312018-12-312017-12-312016-12-31
Value22816
Percentage of DefinedBenefitPlanFairValueOfPlanAssetsGross3.73.68.029.1

ibm:InsuranceContracts, us-gaap:FairValueInputsLevel2, us-gaap:ForeignPlan, us-gaap:PensionPlansDefinedBenefit



Period End2019-12-312018-12-312017-12-312016-12-31
Value1862130813661137
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Period End2019-12-312018-12-312017-12-312016-12-31
Value252460114
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Period End2019-12-31
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Percentage of DefinedBenefitPlanFairValueOfPlanAssetsGross0.0

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Period End2019-12-312018-12-312017-12-312016-12-31
Value19654
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Period End2019-12-312018-12-312017-12-312016-12-31
Value2124186520002045
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Period End2019-12-312018-12-312017-12-31
Value182420
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Period End2019-12-312018-12-312017-12-31
Value969606744
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Period End2019-12-312018-12-312017-12-31
Value220923333508
Percentage of DefinedBenefitPlanFairValueOfPlanAssetsGross4090.74241.83508.0

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Period End2019-12-312018-12-312017-12-31
Value328339356
Percentage of DefinedBenefitPlanFairValueOfPlanAssetsGross607.4616.4356.0

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Period End2019-12-312018-12-312017-12-312016-12-31
Value903107520041982
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Period End2019-12-312018-12-312017-12-312016-12-31
Value21134196611976214897
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Period End2019-12-312018-12-312017-12-312016-12-31
Value630640623656
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Period End2019-12-312018-12-312017-12-312016-12-31
Value17185162081823618164
Percentage of DefinedBenefitPlanFairValueOfPlanAssetsGross31824.129469.118236.033025.5

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Period End2019-12-312018-12-312017-12-31
Value6217
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Period End2019-12-312018-12-312017-12-31
Value194315382215
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Period End2019-12-312018-12-312017-12-312016-12-31
Value856510893
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Period End2019-12-312018-12-312017-12-312016-12-31
Value386421338359
Percentage of DefinedBenefitPlanFairValueOfPlanAssetsGross714.8765.5338.0652.7

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Period End2019-12-312018-12-312017-12-312016-12-31
Value8497538271001
Percentage of DefinedBenefitPlanFairValueOfPlanAssetsGross1572.21369.1827.01820.0

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Period End2019-12-312018-12-312017-12-312016-12-31
Value102908973101117593
Percentage of DefinedBenefitPlanFairValueOfPlanAssetsGross19055.616314.510111.013805.5

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Period End2019-12-312018-12-312017-12-312016-12-31
Value1862130813661137
Percentage of DefinedBenefitPlanFairValueOfPlanAssetsGross3448.12378.21366.02067.3

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Period End2019-12-312018-12-312017-12-312016-12-31
Value252460114
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Period End2019-12-312018-12-312017-12-312016-12-31
Value19654
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Period End2019-12-312018-12-312017-12-312016-12-31
Value2124186520002045
Percentage of DefinedBenefitPlanFairValueOfPlanAssetsGross3933.33390.92000.03718.2

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Period End2019-12-312018-12-312017-12-31
Value987630764
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Period End2019-12-312018-12-312017-12-31
Value220923333508
Percentage of DefinedBenefitPlanFairValueOfPlanAssetsGross4090.74241.83508.0

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Period End2019-12-312018-12-312017-12-31
Value328339356
Percentage of DefinedBenefitPlanFairValueOfPlanAssetsGross607.4616.4356.0

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Period End2019-12-312018-12-312017-12-312016-12-31
Value2469208127826303
Percentage of DefinedBenefitPlanFairValueOfPlanAssetsGross4572.23783.62782.011460.0

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Period End2019-12-312018-12-312017-12-312016-12-31
Value39284371644014435560
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Period End2019-12-312018-12-312017-12-312016-12-31
Value518363376106
Percentage of DefinedBenefitPlanFairValueOfPlanAssetsGross959.3660.0376.0192.7

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Period End2019-12-312018-12-312017-12-312016-12-31
Value2456275339184589
Percentage of DefinedBenefitPlanFairValueOfPlanAssetsGross4548.15005.53918.08343.6

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Period End2019-12-312018-12-312017-12-312016-12-31
Value15907131721482412223
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Period End2019-12-312018-12-312017-12-312016-12-31
Value330341365310
Percentage of DefinedBenefitPlanFairValueOfPlanAssetsGross611.1620.0365.0563.6

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Period End2019-12-312018-12-312017-12-312016-12-31
Value42271396084330241969
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Period End2019-12-312018-12-312017-12-312016-12-31
Value18693162661910717122
Percentage of DefinedBenefitPlanFairValueOfPlanAssetsGross34616.729574.519107.031130.9

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Period End2019-12-312018-12-312017-12-312016-12-31
Value9519883595379641
Percentage of DefinedBenefitPlanInvestmentsMeasuredAtNetAssetValue100.0100.0100.0100.0

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Period End2019-12-312018-12-312017-12-312016-12-31
Value21653205252174418946
Percentage of DefinedBenefitPlanInvestmentsMeasuredAtNetAssetValue227.5232.3228.0196.5

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Period End2019-12-312018-12-312017-12-312016-12-31
Value66842635247013968017
Percentage of DefinedBenefitPlanPlansWithPlanAssetsInExcessOfBenefitObligationAggregateBenefitObligation100.0100.0100.0100.0

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Period End2019-12-312018-12-312017-12-312016-12-31
Value73705681907478271051
Percentage of DefinedBenefitPlanPlansWithPlanAssetsInExcessOfBenefitObligationAggregateFairValueOfPlanAssets100.0100.0100.0100.0

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Period End2019-12-312018-12-31
Value46854616
Percentage of DefinedBenefitPlanWithAccumulatedPostretirementBenefitObligationInExcessOfPlanAssetsAccumulatedBenefitObligation100.0100.0

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Period End2019-12-312018-12-31
Value4794
Percentage of DefinedBenefitPlanWithAccumulatedPostretirementBenefitObligationInExcessOfPlanAssetsPlanAssets100.0100.0

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Period End2019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-31
Value15211380158314941445165816731501
Percentage of DefinedContributionPensionPlanLiabilitiesNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0

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Period End2020-03-312019-06-30
Value648813
Percentage of DisposalGroupIncludingDiscontinuedOperationConsiderationExpectedToReceive100.0100.0

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Period End2019-12-312018-12-312017-12-312016-12-31
Value65173253270
Percentage of DivestitureRelatedActivitiesNoncurrent100.0100.0100.0100.0

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Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value26295044475270707077
Percentage of FinancingReceivableBilledInvoices90DaysPastDueAndStillAccruing100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

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Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value9141819182431293236
Percentage of FinancingReceivableBilledInvoices90DaysPastDueAndStillAccruing34.648.336.043.238.346.244.341.445.746.8

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Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value16153125292939413841
Percentage of FinancingReceivableBilledInvoices90DaysPastDueAndStillAccruing61.551.762.056.861.755.855.758.654.353.2

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Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value81113131319272429
Percentage of FinancingReceivableBilledInvoices90DaysPastDueAndStillAccruing30.837.926.029.527.736.538.634.337.7

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Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value111110172324273138
Percentage of FinancingReceivableBilledInvoices90DaysPastDueAndStillAccruing42.337.920.038.648.946.238.644.349.4

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Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value112223233
Percentage of FinancingReceivableBilledInvoices90DaysPastDueAndStillAccruing3.83.44.04.54.35.82.94.33.9

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Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value126521873
Percentage of FinancingReceivableBilledInvoices90DaysPastDueAndStillAccruing3.86.912.011.44.31.911.410.03.9

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Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value023431213
Percentage of FinancingReceivableBilledInvoices90DaysPastDueAndStillAccruing0.06.96.09.16.41.92.91.43.9

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Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value3315343440
Percentage of FinancingReceivableBilledInvoices90DaysPastDueAndStillAccruing11.510.330.06.88.55.85.75.70.0

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Period End2020-03-31
Value646
Percentage of FinancingReceivableGuaranteedAndUnguaranteedResidualAsset100.0

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Period End2020-03-31
Value646
Percentage of FinancingReceivableGuaranteedAndUnguaranteedResidualAsset100.0

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Period End2019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value750727750804678741808855
Percentage of FinancingReceivablesNetExcludingResidualValue100.0100.0100.0100.0100.0100.0100.0100.0

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Period End2019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value11868558598921206128513641469
Percentage of FinancingReceivablesNetExcludingResidualValue158.1117.6114.5110.9177.9173.4168.8171.8

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Period End2019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value454441488540413434477544
Percentage of FinancingReceivablesNetExcludingResidualValue60.560.765.167.260.958.659.063.6

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Period End2019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value892874834792901845913961
Percentage of FinancingReceivablesNetExcludingResidualValue118.9120.2111.298.5132.9114.0113.0112.4

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Period End2019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value181201137136158167156190
Percentage of FinancingReceivablesNetExcludingResidualValue24.127.618.316.923.322.519.322.2

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Period End2019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value395308219238436400420502
Percentage of FinancingReceivablesNetExcludingResidualValue52.742.429.229.664.354.052.058.7

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Period End2019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value465443428454593385390422
Percentage of FinancingReceivablesNetExcludingResidualValue62.060.957.156.587.552.048.349.4

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Period End2019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value102810069989161055668658724
Percentage of FinancingReceivablesNetExcludingResidualValue137.1138.4133.1113.9155.690.181.484.7

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Period End2019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value43446067858710168
Percentage of FinancingReceivablesNetExcludingResidualValue5.76.18.08.312.511.712.58.0

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Period End2019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value189160185159185169194120
Percentage of FinancingReceivablesNetExcludingResidualValue25.222.024.719.827.322.824.014.0

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Period End2019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value5411121545545149
Percentage of FinancingReceivablesNetExcludingResidualValue7.21.51.61.96.67.36.35.7

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Period End2019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value193167160127125128137129
Percentage of FinancingReceivablesNetExcludingResidualValue25.723.021.315.818.417.317.015.1

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Period End2019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value242258251198299298320367
Percentage of FinancingReceivablesNetExcludingResidualValue32.335.533.524.644.140.239.642.9

ibm:MoodysB2ToB3Rating, srt:Americas, us-gaap:LoansReceivable



Period End2019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value522499589521531517540630
Percentage of FinancingReceivablesNetExcludingResidualValue69.668.678.564.878.369.866.873.7

ibm:MoodysB2ToB3Rating, srt:AsiaPacific, us-gaap:FinanceLeasesPortfolioSegment



Period End2019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value4744505450525464
Percentage of FinancingReceivablesNetExcludingResidualValue6.36.16.76.77.47.06.77.5

ibm:MoodysB2ToB3Rating, srt:AsiaPacific, us-gaap:LoansReceivable



Period End2019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value72627775109102103113
Percentage of FinancingReceivablesNetExcludingResidualValue9.68.510.39.316.113.812.713.2

ibm:MoodysB2ToB3Rating, us-gaap:EMEA, us-gaap:FinanceLeasesPortfolioSegment



Period End2019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value504665699010010277
Percentage of FinancingReceivablesNetExcludingResidualValue6.76.38.78.613.313.512.69.0

ibm:MoodysB2ToB3Rating, us-gaap:EMEA, us-gaap:LoansReceivable



Period End2019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value253222240284249239274204
Percentage of FinancingReceivablesNetExcludingResidualValue33.730.532.035.336.732.333.923.9

ibm:MoodysBa1ToBa2Rating, srt:Americas, us-gaap:FinanceLeasesPortfolioSegment



Period End2019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value746697834679852754784730
Percentage of FinancingReceivablesNetExcludingResidualValue99.595.9111.284.5125.7101.897.085.4

ibm:MoodysBa1ToBa2Rating, srt:Americas, us-gaap:LoansReceivable



Period End2019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value15131380155414591516130813231253
Percentage of FinancingReceivablesNetExcludingResidualValue201.7189.8207.2181.5223.6176.5163.7146.5

ibm:MoodysBa1ToBa2Rating, srt:AsiaPacific, us-gaap:FinanceLeasesPortfolioSegment



Period End2019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value154149127135191184188184
Percentage of FinancingReceivablesNetExcludingResidualValue20.520.516.916.828.224.823.321.5

ibm:MoodysBa1ToBa2Rating, srt:AsiaPacific, us-gaap:LoansReceivable



Period End2019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value388396556535417358359325
Percentage of FinancingReceivablesNetExcludingResidualValue51.754.574.166.561.548.344.438.0

ibm:MoodysBa1ToBa2Rating, us-gaap:EMEA, us-gaap:FinanceLeasesPortfolioSegment



Period End2019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value326311412437426432401448
Percentage of FinancingReceivablesNetExcludingResidualValue43.542.854.954.462.858.349.652.4

ibm:MoodysBa1ToBa2Rating, us-gaap:EMEA, us-gaap:LoansReceivable



Period End2019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value9218309479441175103210821186
Percentage of FinancingReceivablesNetExcludingResidualValue122.8114.2126.3117.4173.3139.3133.9138.7

ibm:MoodysBa3ToB1Rating, srt:Americas, us-gaap:FinanceLeasesPortfolioSegment



Period End2019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value215259229454433459479443
Percentage of FinancingReceivablesNetExcludingResidualValue28.735.630.556.563.961.959.351.8

ibm:MoodysBa3ToB1Rating, srt:Americas, us-gaap:LoansReceivable



Period End2019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value471444461604770797808760
Percentage of FinancingReceivablesNetExcludingResidualValue62.861.161.575.1113.6107.6100.088.9

ibm:MoodysBa3ToB1Rating, srt:AsiaPacific, us-gaap:FinanceLeasesPortfolioSegment



Period End2019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value101104969984888589
Percentage of FinancingReceivablesNetExcludingResidualValue13.514.312.812.312.411.910.510.4

ibm:MoodysBa3ToB1Rating, srt:AsiaPacific, us-gaap:LoansReceivable



Period End2019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value205208130126184172162157
Percentage of FinancingReceivablesNetExcludingResidualValue27.328.617.315.727.123.220.018.4

ibm:MoodysBa3ToB1Rating, us-gaap:EMEA, us-gaap:FinanceLeasesPortfolioSegment



Period End2019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value140123136147171185177192
Percentage of FinancingReceivablesNetExcludingResidualValue18.716.918.118.325.225.021.922.5

ibm:MoodysBa3ToB1Rating, us-gaap:EMEA, us-gaap:LoansReceivable



Period End2019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value564476542481472443477508
Percentage of FinancingReceivablesNetExcludingResidualValue75.265.572.359.869.659.859.059.4

ibm:MoodysBaa1ToBaa3Rating, srt:Americas, us-gaap:FinanceLeasesPortfolioSegment



Period End2019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value955843780932892796857980
Percentage of FinancingReceivablesNetExcludingResidualValue127.3116.0104.0115.9131.6107.4106.1114.6

ibm:MoodysBaa1ToBaa3Rating, srt:Americas, us-gaap:LoansReceivable



Period End2019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value18821560161516021587138114461683
Percentage of FinancingReceivablesNetExcludingResidualValue250.9214.6215.3199.3234.1186.4179.0196.8

ibm:MoodysBaa1ToBaa3Rating, srt:AsiaPacific, us-gaap:FinanceLeasesPortfolioSegment



Period End2019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value147153170199297278320337
Percentage of FinancingReceivablesNetExcludingResidualValue19.621.022.724.843.837.539.639.4

ibm:MoodysBaa1ToBaa3Rating, srt:AsiaPacific, us-gaap:LoansReceivable



Period End2019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value619617718653648541613596
Percentage of FinancingReceivablesNetExcludingResidualValue82.584.995.781.295.673.075.969.7

ibm:MoodysBaa1ToBaa3Rating, us-gaap:EMEA, us-gaap:FinanceLeasesPortfolioSegment



Period End2019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value409380365386417416397371
Percentage of FinancingReceivablesNetExcludingResidualValue54.552.348.748.061.556.149.143.4

ibm:MoodysBaa1ToBaa3Rating, us-gaap:EMEA, us-gaap:LoansReceivable



Period End2019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value152711201271123311489941072982
Percentage of FinancingReceivablesNetExcludingResidualValue203.6154.1169.5153.4169.3134.1132.7114.9

ibm:MoodysCaaToDRating, srt:Americas, us-gaap:FinanceLeasesPortfolioSegment



Period End2019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value1316184726323951
Percentage of FinancingReceivablesNetExcludingResidualValue1.72.22.45.83.84.34.86.0

ibm:MoodysCaaToDRating, srt:Americas, us-gaap:LoansReceivable



Period End2019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value36472710447556788
Percentage of FinancingReceivablesNetExcludingResidualValue4.86.53.612.96.97.48.310.3

ibm:MoodysCaaToDRating, srt:AsiaPacific, us-gaap:FinanceLeasesPortfolioSegment



Period End2019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value2551578918
Percentage of FinancingReceivablesNetExcludingResidualValue0.30.70.71.91.01.11.12.1

ibm:MoodysCaaToDRating, srt:AsiaPacific, us-gaap:LoansReceivable



Period End2019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value101491915161731
Percentage of FinancingReceivablesNetExcludingResidualValue1.31.91.22.42.22.22.13.6

ibm:MoodysCaaToDRating, us-gaap:EMEA, us-gaap:FinanceLeasesPortfolioSegment



Period End2019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value214181010913
Percentage of FinancingReceivablesNetExcludingResidualValue0.30.10.52.21.51.31.11.5

ibm:MoodysCaaToDRating, us-gaap:EMEA, us-gaap:LoansReceivable



Period End2019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value187233128232434
Percentage of FinancingReceivablesNetExcludingResidualValue2.41.03.13.94.13.13.04.0

us-gaap:StatementGeographical, us-gaap:FinancingReceivablePortfolioSegment

srt:Americas, us-gaap:FinanceLeasesPortfolioSegment



Period End2019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value33853245328835683774346536763847
Percentage of FinancingReceivablesNetExcludingResidualValue451.3446.4438.4443.8556.6467.6455.0449.9

srt:Americas, us-gaap:LoansReceivable



Period End2019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value66385789610360976712601262066607
Percentage of FinancingReceivablesNetExcludingResidualValue885.1796.3813.7758.3990.0811.3768.1772.7

srt:AsiaPacific, us-gaap:FinanceLeasesPortfolioSegment



Period End2019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value94793999611091128113212331302
Percentage of FinancingReceivablesNetExcludingResidualValue126.3129.2132.8137.9166.4152.8152.6152.3

srt:AsiaPacific, us-gaap:LoansReceivable



Period End2019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value23762330250823582457220323622303
Percentage of FinancingReceivablesNetExcludingResidualValue316.8320.5334.4293.3362.4297.3292.3269.4

us-gaap:EMEA, us-gaap:FinanceLeasesPortfolioSegment



Period End2019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value11621073113212081319136512921340
Percentage of FinancingReceivablesNetExcludingResidualValue154.9147.6150.9150.2194.5184.2159.9156.7

us-gaap:EMEA, us-gaap:LoansReceivable



Period End2019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value38713130340233373633325834873545
Percentage of FinancingReceivablesNetExcludingResidualValue516.1430.5453.6415.0535.8439.7431.6414.6

ibm:OtherEmployeeBenefitRelatedNoncurrentAssets



Period End2019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-31
Value253263316272273356392439493409427
Percentage of OtherEmployeeBenefitRelatedNoncurrentAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

ibm:OtherReceivablesNoncurrent



Period End2019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-31
Value276359455416516509174204208560617
Percentage of OtherReceivablesNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

ibm:OtherTaxesPayable



Period End2019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-31
Value424094890891718624
Percentage of OtherTaxesPayable100.0100.0100.0100.0100.0100.0100.0100.0

ibm:RevenueRemainingPerformanceObligationExpectedTimingPercentage



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value0.60.60.580.60.60.60.60.60.6
Percentage of RevenueRemainingPerformanceObligationExpectedTimingPercentage100.0100.0100.0100.0100.0100.0100.0100.0100.0

ibm:TransferOfFinancialAssetsAccountedForAsSalesAmountRemainingUncollected



Period End2019-12-312018-12-312017-12-31
Value500900700
Percentage of TransferOfFinancialAssetsAccountedForAsSalesAmountRemainingUncollected100.0100.0100.0

ibm:WorkforceReductionsNoncurrent



Period End2019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-31
Value725736804424407469500473366406409
Percentage of WorkforceReductionsNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:Restatement, us-gaap:AdjustmentsForNewAccountingPronouncements, us-gaap:BalanceSheetLocation, us-gaap:SubsequentEventType

us-gaap:AccountsAndFinancingReceivableAllowanceForCreditLoss

srt:RestatementAdjustment, us-gaap:AccountingStandardsUpdate201613, ibm:AccountsReceivableTrade, us-gaap:SubsequentEvent



Period End2020-01-01
Value15
Percentage of AccountsAndFinancingReceivableAllowanceForCreditLoss100.0

srt:RestatementAdjustment, us-gaap:AccountingStandardsUpdate201613, ibm:FinancingReceivables, us-gaap:SubsequentEvent



Period End2020-01-01
Value35
Percentage of AccountsAndFinancingReceivableAllowanceForCreditLoss233.3

srt:RestatementAdjustment, us-gaap:AccountingStandardsUpdate201613, us-gaap:OtherLiabilities, us-gaap:SubsequentEvent



Period End2020-01-01
Value30
Percentage of AccountsAndFinancingReceivableAllowanceForCreditLoss200.0

us-gaap:ConsolidationItems

us-gaap:AccountsAndNotesReceivableNet

ibm:CorporateAndReconcilingItems



Period End2019-12-312018-12-312017-12-312016-12-312015-12-31
Value32981597255426602333
Percentage of AccountsAndNotesReceivableNet100.0100.0100.0100.0100.0

us-gaap:AccrualForEnvironmentalLossContingencies



Period End2019-12-312018-12-312017-12-312016-12-312015-12-31
Value270255267272283
Percentage of AccrualForEnvironmentalLossContingencies100.0100.0100.0100.0100.0

us-gaap:AccruedEnvironmentalLossContingenciesNoncurrent



Period End2019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-31
Value254244262262270240231216249249245
Percentage of AccruedEnvironmentalLossContingenciesNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AllowanceForDoubtfulAccountsReceivableCurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312018-01-012017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value337299286281316309310310307297297296304302290325352336367362364354336316294305291273258263255250264272256282305324
Percentage of AllowanceForDoubtfulAccountsReceivableCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AllowanceForDoubtfulOtherReceivablesCurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value2833353933383837373639383848485855515352414046453636292520172011911111210
Percentage of AllowanceForDoubtfulOtherReceivablesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AllowanceForNotesAndLoansReceivableCurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value186188225243248244273281287261270272351337532526529490488528484452432404317308280279273288277271282311266286342
Percentage of AllowanceForNotesAndLoansReceivableCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AllowanceForNotesAndLoansReceivableNoncurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value523332353848525954748412299101116142154118121122125126876893807264646665555838374058
Percentage of AllowanceForNotesAndLoansReceivableNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DerivativeInstrumentRisk, us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship

us-gaap:AociBeforeTaxAttributableToParent

ibm:ForwardStartingInterestRateSwap, us-gaap:CashFlowHedging



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-312017-09-30
Value-188-192-196-201-206-3500
Percentage of AociBeforeTaxAttributableToParent100.0100.0100.0100.0100.0100.00.00.0

us-gaap:CurrencySwap, us-gaap:CashFlowHedging



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302015-12-31
Value-308-185-138-84-2175141129122421671929-4-24-2
Percentage of AociBeforeTaxAttributableToParent163.896.470.441.810.2-214.30.00.00.00.00.00.00.00.00.00.00.0

us-gaap:ForeignExchangeForward, us-gaap:CashFlowHedging



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302015-12-31
Value174145337238356342202233-4627-7082342462-45-76147
Percentage of AociBeforeTaxAttributableToParent-92.6-75.5-171.9-118.4-172.8-977.10.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AssetRetirementObligation



Period End2019-12-312018-12-312017-12-312016-12-312015-12-31
Value150146152173166
Percentage of AssetRetirementObligation100.0100.0100.0100.0100.0

us-gaap:AssetRetirementObligationsNoncurrent



Period End2019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-31
Value94111115142134136129127166161116
Percentage of AssetRetirementObligationsNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FairValueByMeasurementFrequency

us-gaap:AssetsFairValueDisclosure

us-gaap:FairValueMeasurementsRecurring



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302012-12-31
Value88925823822926390157769053119009270101851015191591035586656672809092041277066718844843694247118865883628095909289329424
Percentage of AssetsFairValueDisclosure100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AvailableForSaleSecuritiesDebtSecuritiesCurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value6476967338748726182932966608
Percentage of AvailableForSaleSecuritiesDebtSecuritiesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency

us-gaap:FairValueInputsLevel2, us-gaap:FairValueMeasurementsRecurring



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302015-12-312013-06-302012-12-312010-12-31
Value6476967338738726182932963893608599599599699929599506799717990
Percentage of AvailableForSaleSecuritiesDebtSecuritiesCurrent100.0100.0100.099.9100.0100.0100.099.70.0100.00.00.00.00.00.00.00.00.00.00.0

us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency

us-gaap:AvailableForSaleSecuritiesDebtSecuritiesNoncurrent

us-gaap:FairValueInputsLevel2, us-gaap:FairValueMeasurementsRecurring



Period End2020-03-312019-12-312019-09-302017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302015-12-312013-06-302012-12-31
Value33651117766677678
Percentage of AvailableForSaleSecuritiesDebtSecuritiesNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:BusinessAcquisition, us-gaap:StatementScenario

us-gaap:BusinessAcquisitionPercentageOfVotingInterestsAcquired

ibm:RedHat, us-gaap:ScenarioForecast



Period End2019-12-31
Value1.0
Percentage of BusinessAcquisitionPercentageOfVotingInterestsAcquired100.0

us-gaap:BusinessCombinationContingentConsiderationLiabilityNoncurrent



Period End2019-12-312018-12-312017-12-312016-12-312015-12-31
Value91388111200
Percentage of BusinessCombinationContingentConsiderationLiabilityNoncurrent100.0100.0100.0100.0100.0

us-gaap:CapitalizedContractCostNet



Period End2019-12-312018-12-312018-09-302018-06-302018-03-31
Value43684975480849565006
Percentage of CapitalizedContractCostNet100.0100.0100.0100.0100.0

us-gaap:CapitalizedContractCost

ibm:CostsToObtainContract



Period End2019-12-312018-12-312018-09-302018-06-302018-03-31
Value609717681715719
Percentage of CapitalizedContractCostNet13.914.414.214.414.4

ibm:DeferredSetUpCosts



Period End2019-12-312018-12-312018-09-302018-06-302018-03-31
Value19392085212321082149
Percentage of CapitalizedContractCostNet44.441.944.242.542.9

ibm:OtherDeferredFulfillmentCosts



Period End2019-12-312018-12-312018-09-302018-06-302018-03-31
Value18202173200321332138
Percentage of CapitalizedContractCostNet41.743.741.743.042.7

us-gaap:CapitalizedContractCostNetCurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value194818961978221723682300222723441820
Percentage of CapitalizedContractCostNetCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:CapitalizedContractCostNetNoncurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value245924722535266226632676258126132136
Percentage of CapitalizedContractCostNetNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:CashAndCashEquivalents, us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency

us-gaap:CashAndCashEquivalentsFairValueDisclosure

us-gaap:BankTimeDeposits, us-gaap:FairValueInputsLevel2, us-gaap:FairValueMeasurementsRecurring



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302015-12-31
Value7166439262511909512686767982387123832380665553728557203629194831982856
Percentage of CashAndCashEquivalentsFairValueDisclosure100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:MoneyMarketFunds, us-gaap:FairValueInputsLevel1, us-gaap:FairValueMeasurementsRecurring



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302015-12-31
Value526427597600125252647625261375136814401204223721412069
Percentage of CashAndCashEquivalentsFairValueDisclosure7.39.79.631.40.20.30.36.70.30.324.818.825.233.2114.866.972.4

us-gaap:FairValueByMeasurementFrequency

us-gaap:FairValueMeasurementsRecurring



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302012-12-31
Value7692481968482509614209770482637599834885867589888471604832597473011110949437250654370865359742374747032799779387746
Percentage of CashAndCashEquivalentsFairValueDisclosure107.3109.7109.6131.4112.0100.3100.3106.7100.3106.4136.7121.9125.2133.1306.7228.30.0173.10.00.00.00.00.00.00.00.00.00.0

us-gaap:ConsolidationItems

us-gaap:CashCashEquivalentsAndShortTermInvestments

ibm:CorporateAndReconcilingItems



Period End2019-12-312018-12-312017-12-312016-12-312015-12-312014-12-31
Value7308103939900675266347182
Percentage of CashCashEquivalentsAndShortTermInvestments100.0100.0100.0100.0100.0100.0

us-gaap:CommercialPaper



Period End2020-03-312019-12-312019-09-302019-06-302018-12-312015-12-312015-09-302015-06-302014-12-312014-09-302014-06-302013-12-312012-12-31
Value251930429887871299560016007006506474654924581800
Percentage of CommercialPaper100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:CommonStocksIncludingAdditionalPaidInCapital



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302012-12-31
Value5609255895558085540455287551515498754827547125456654395542355410453935537595356553439532625322053059529285266652446521635194351594512035088650110
Percentage of CommonStocksIncludingAdditionalPaidInCapital100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProductOrService

us-gaap:ContractWithCustomerAssetNet

us-gaap:TechnologyService



Period End2019-12-312018-12-312018-01-01
Value424421471
Percentage of ContractWithCustomerAssetNet100.0100.0100.0

us-gaap:ContractWithCustomerAssetNetCurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312018-01-01
Value488492513594528470510515582557
Percentage of ContractWithCustomerAssetNetCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProductOrService

us-gaap:ContractWithCustomerLiability

us-gaap:TechnologyService



Period End2019-12-312018-12-312017-12-31
Value510654245870
Percentage of ContractWithCustomerLiability100.0100.0100.0

us-gaap:CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption



Period End2019-12-31
Value-66
Percentage of CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption100.0

us-gaap:StatementEquityComponents

us-gaap:Parent



Period End2019-12-31
Value-66
Percentage of CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption100.0

us-gaap:RetainedEarnings



Period End2019-12-31
Value-66
Percentage of CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption100.0

us-gaap:DebtInstrumentCarryingAmount



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302013-12-312012-12-312011-12-312010-12-312009-12-31
Value6141762207635126556947346431964345043934447404544545522457084279241145420014402745188388203734337393383063973739106396843703629660267022560624008
Percentage of DebtInstrumentCarryingAmount100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:Currency

currency:EUR



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302015-12-31
Value1812614306150221566915438100111016210213107801050210342998472177122758274934892
Percentage of DebtInstrumentCarryingAmount29.523.023.723.932.623.223.423.224.123.122.721.816.917.318.117.012.6

currency:GBP



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302015-12-31
Value13111390134613361368133813691386147414201409136413121296136614001555
Percentage of DebtInstrumentCarryingAmount2.12.22.12.02.93.13.23.23.33.13.13.03.13.13.33.24.0

currency:JPY



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302015-12-31
Value13491339134713491314132512811313137012911669123316491576140013831180
Percentage of DebtInstrumentCarryingAmount2.22.22.12.12.83.12.93.03.12.83.72.73.93.83.33.13.0

currency:USD



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302015-12-31
Value4009744594454384680828726301313019230513304813151531408323393230930563306043264430319
Percentage of DebtInstrumentCarryingAmount65.371.771.571.460.769.869.569.568.169.369.070.875.574.372.974.178.1

ibm:OtherCurrency



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302015-12-31
Value288375360407500391446508636717694788305208659506
Percentage of DebtInstrumentCarryingAmount0.50.60.60.61.10.91.01.21.41.61.51.70.70.51.61.3

us-gaap:Currency, us-gaap:DebtInstrument

currency:USD, ibm:NotesPayableMaturing2020



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-31
Value27664326433343314338434433473419339634162054
Percentage of DebtInstrumentCarryingAmount4.57.06.86.69.210.17.77.87.67.55.0

currency:USD, ibm:NotesPayableMaturing2021



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-31
Value55568498852785375531552950015273524841292887
Percentage of DebtInstrumentCarryingAmount9.013.713.413.011.712.811.512.011.79.17.0

currency:USD, ibm:NotesPayableMaturing2022



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302015-12-31
Value62576289630562733529353635333434340434813492290329031901190219011900
Percentage of DebtInstrumentCarryingAmount10.210.19.99.67.58.28.17.87.67.77.76.46.84.64.54.34.9

currency:USD, ibm:NotesPayableMaturing2023



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302015-12-31
Value24132388239123992413242823952253225015471529150215001500150015001500
Percentage of DebtInstrumentCarryingAmount3.93.83.83.75.15.65.55.15.03.43.43.33.53.63.63.43.9

currency:USD, ibm:NotesPayableMaturing2024



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302015-12-31
Value50495045506150592046203720132000200020002000200020002000200020002000
Percentage of DebtInstrumentCarryingAmount8.28.18.07.74.34.74.64.64.54.44.44.44.74.94.84.55.2

currency:USD, ibm:NotesPayableMaturing2025



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302015-12-31
Value645636624611600600600600600600600600600600600600600
Percentage of DebtInstrumentCarryingAmount1.11.01.00.91.31.41.41.41.31.31.31.31.41.51.41.41.5

currency:USD, ibm:NotesPayableMaturing2026



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-30
Value4350435043504350135013501350135013501350135013501350135013501350
Percentage of DebtInstrumentCarryingAmount7.17.06.86.62.93.13.13.13.03.03.03.03.23.33.23.1

currency:USD, ibm:NotesPayableMaturing2027



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302015-12-31
Value969969969969969969969969969969969969969469469469469
Percentage of DebtInstrumentCarryingAmount1.61.61.51.52.02.22.22.22.22.12.12.12.31.11.11.11.2

currency:USD, ibm:NotesPayableMaturing2039



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302015-12-31
Value2745274527452745745745745745745745745745745745745745745
Percentage of DebtInstrumentCarryingAmount4.54.44.34.21.61.71.71.71.71.61.61.61.71.81.81.71.9

us-gaap:Currency, us-gaap:DebtInstrument, us-gaap:SubsequentEventType

us-gaap:DebtInstrumentFaceAmount

currency:EUR, ibm:EightToTwentyYearFixedRateNotesIssuedFebruary2020, us-gaap:SubsequentEvent



Period End2020-02-11
Value4100
Percentage of DebtInstrumentFaceAmount100.0

us-gaap:DebtInstrument

ibm:EuroFixedRateNotes



Period End2020-03-312019-06-30
Value41005700
Percentage of DebtInstrumentFaceAmount0.00.0

us-gaap:DebtInstrumentUnamortizedDiscount



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302013-12-312012-12-312011-12-312010-12-312009-12-31
Value881881890903831802808815822826833837838839847853861838840845851853857866872865533531527
Percentage of DebtInstrumentUnamortizedDiscount100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredFinanceCostsNet



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302015-12-31
Value15114214815688767985939399928482869074
Percentage of DeferredFinanceCostsNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredGainLossOnDiscontinuationOfInterestRateFairValueHedge



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302013-12-312012-12-312011-12-312010-12-312009-12-31
Value-491-440-470-465-406-337-198-264-343-526-627-668-627-669-1057-1140-1022-790-904-717-911-792-646-667-546886994788673
Percentage of DeferredGainLossOnDiscontinuationOfInterestRateFairValueHedge100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredIncomeTaxAssetsNet



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302015-12-31
Value87825182499452745284521644364689511148627289681264575224428943874822
Percentage of DeferredIncomeTaxAssetsNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ConsolidationItems

ibm:CorporateAndReconcilingItems



Period End2019-12-312018-12-312017-12-312016-12-312015-12-312014-12-31
Value499550894746507846936465
Percentage of DeferredIncomeTaxAssetsNet96.497.697.697.297.30.0

us-gaap:Restatement, us-gaap:AdjustmentsForNewAccountingPronouncements

srt:RestatementAdjustment, us-gaap:AccountingStandardsUpdate201613



Period End2020-01-01
Value-14
Percentage of DeferredIncomeTaxAssetsNet0.0

us-gaap:Restatement, us-gaap:AdjustmentsForNewAccountingPronouncements, us-gaap:SubsequentEventType

srt:RestatementAdjustment, us-gaap:AccountingStandardsUpdate201613, us-gaap:SubsequentEvent



Period End2020-01-01
Value-15
Percentage of DeferredIncomeTaxAssetsNet0.0

us-gaap:DeferredIncomeTaxLiabilities



Period End2019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value1193873984206619156204773668065086504
Percentage of DeferredIncomeTaxLiabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredIncomeTaxLiabilitiesNet



Period End2019-12-312018-12-31
Value52303696
Percentage of DeferredIncomeTaxLiabilitiesNet100.0100.0

us-gaap:ProductOrService

us-gaap:DeferredRevenue

ibm:ExtendedWarranty



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value447477455486503533514534566
Percentage of DeferredRevenue100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredRevenueCurrent



Period End2020-03-312019-12-312019-09-302019-06-302018-12-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312008-12-31
Value133771202611223112611116511552106491154112351110351081511508126091102110458113321216211877113461259113681125571165812241129711195211230123111326912197112521266012820115801049910671114561084510239
Percentage of DeferredRevenueCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProductOrService

ibm:ExtendedWarranty



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value219227226225242271242254
Percentage of DeferredRevenueCurrent1.61.92.02.00.02.40.00.0

us-gaap:DeferredRevenueNoncurrent



Period End2020-03-312019-12-312019-09-302019-06-302018-12-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312008-12-31
Value376938513382347434453746357936173557360036113837366237713593389238113691368341524042410840874166440944914263388939043847363436413724366634873341345635623171
Percentage of DeferredRevenueNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProductOrService

ibm:ExtendedWarranty



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value228250230260261262273280
Percentage of DeferredRevenueNoncurrent6.06.56.87.50.07.60.00.0

us-gaap:DeferredTaxAssetsDeferredIncome



Period End2019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-31
Value60067460574176295796410188341080847
Percentage of DeferredTaxAssetsDeferredIncome100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxAssetsGoodwillAndIntangibleAssets



Period End2019-12-312018-12-312017-12-31
Value592620585
Percentage of DeferredTaxAssetsGoodwillAndIntangibleAssets100.0100.0100.0

us-gaap:DeferredTaxAssetsGross



Period End2019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-31
Value12498983395261190610929119641031112615118281129811788
Percentage of DeferredTaxAssetsGross100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxAssetsOther



Period End2019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-31
Value1438150113961503931130617741384140914861999
Percentage of DeferredTaxAssetsOther100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxAssetsPropertyPlantAndEquipment



Period End2019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value253231293270329329382456474
Percentage of DeferredTaxAssetsPropertyPlantAndEquipment100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsPostretirementBenefits



Period End2019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-31
Value37663620347746714621479537045870
Percentage of DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsPostretirementBenefits100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost



Period End2019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-31
Value6376366461132963132812621666159815701853
Percentage of DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxAssetsTaxDeferredExpenseReservesAndAccruals



Period End2019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-31
Value298348395473528529592586
Percentage of DeferredTaxAssetsTaxDeferredExpenseReservesAndAccruals100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAccruedLiabilities



Period End2019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-31
Value3683363876249041176322
Percentage of DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAccruedLiabilities100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxLiabilitiesDeferredExpenseCapitalizedSoftware



Period End2019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-31
Value1075292360672554421558542466638409
Percentage of DeferredTaxLiabilitiesDeferredExpenseCapitalizedSoftware100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxLiabilitiesGoodwillAndIntangibleAssets



Period End2019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-31
Value3111120012261800140712631173957796909639
Percentage of DeferredTaxLiabilitiesGoodwillAndIntangibleAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxLiabilitiesLeasingArrangements



Period End2019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-31
Value221658058465191691211192216214919502129
Percentage of DeferredTaxLiabilitiesLeasingArrangements100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxLiabilitiesOther



Period End2019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-31
Value9401011658145511771111841115811211114874
Percentage of DeferredTaxLiabilitiesOther100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxLiabilitiesPropertyPlantAndEquipment



Period End2019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-31
Value72871964185691948713461378142112231138
Percentage of DeferredTaxLiabilitiesPropertyPlantAndEquipment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxLiabilitiesUndistributedForeignEarnings



Period End2019-12-312018-12-31
Value725981
Percentage of DeferredTaxLiabilitiesUndistributedForeignEarnings100.0100.0

us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanAccumulatedBenefitObligation

country:US, us-gaap:PensionPlansDefinedBenefit



Period End2019-12-312018-12-312017-12-312016-12-31
Value50232478125244452218
Percentage of DefinedBenefitPlanAccumulatedBenefitObligation100.0100.0100.0100.0

us-gaap:ForeignPlan, us-gaap:PensionPlansDefinedBenefit



Period End2019-12-312018-12-312017-12-312016-12-31
Value47645451614797444514
Percentage of DefinedBenefitPlanAccumulatedBenefitObligation94.894.591.585.2

us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeBeforeTax

country:US, us-gaap:OtherPostretirementBenefitPlansDefinedBenefit



Period End2019-12-312018-12-312017-12-312016-12-31
Value585457531642
Percentage of DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeBeforeTax100.0100.0100.0100.0

country:US, us-gaap:PensionPlansDefinedBenefit



Period End2019-12-312018-12-312017-12-312016-12-31
Value16648175331811919313
Percentage of DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeBeforeTax2845.83836.53412.23008.3

us-gaap:ForeignPlan, us-gaap:OtherPostretirementBenefitPlansDefinedBenefit



Period End2019-12-312018-12-312017-12-312016-12-31
Value283176147154
Percentage of DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeBeforeTax48.438.527.724.0

us-gaap:ForeignPlan, us-gaap:PensionPlansDefinedBenefit



Period End2019-12-312018-12-312017-12-312016-12-31
Value17569186241818420356
Percentage of DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeBeforeTax3003.24075.33424.53170.7

us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetGainsLossesBeforeTax

country:US, us-gaap:OtherPostretirementBenefitPlansDefinedBenefit



Period End2019-12-312018-12-312017-12-312016-12-312015-12-31
Value-551-405-486-605-609
Percentage of DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetGainsLossesBeforeTax100.0100.0100.0100.0100.0

country:US, us-gaap:PensionPlansDefinedBenefit



Period End2019-12-312018-12-312017-12-312016-12-312015-12-31
Value-16608-17476-18045-19222-19363
Percentage of DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetGainsLossesBeforeTax3014.24315.13713.03177.23179.5

us-gaap:ForeignPlan, us-gaap:OtherPostretirementBenefitPlansDefinedBenefit



Period End2019-12-312018-12-312017-12-312016-12-312015-12-31
Value-287-172-145-154-128
Percentage of DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetGainsLossesBeforeTax52.142.529.825.521.0

us-gaap:ForeignPlan, us-gaap:PensionPlansDefinedBenefit



Period End2019-12-312018-12-312017-12-312016-12-312015-12-31
Value-17272-18452-18275-20544-20724