MCO


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

Table of contents



us-gaap:CommonStockValue
us-gaap:StatementEquityComponents
us-gaap:SharesIssued

us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding

us-gaap:WeightedAverageNumberOfSharesOutstandingBasic

us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount

us-gaap:EarningsPerShareBasic

us-gaap:EarningsPerShareDiluted

us-gaap:ComprehensiveIncomeNetOfTax

us-gaap:ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest

us-gaap:ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest

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

us-gaap:CostsAndExpenses
us-gaap:ConsolidationItems
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:GainsLossesOnExtinguishmentOfDebt

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest
us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:StatementEquityComponents

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments
us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:StatementEquityComponents

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

us-gaap:IncomeTaxesPaid

us-gaap:InterestIncomeExpenseNonoperatingNet

us-gaap:InterestPaidNet

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

us-gaap:NetIncomeLossAttributableToNoncontrollingInterest

us-gaap:NonoperatingIncomeExpense

us-gaap:OperatingExpenses
us-gaap:ConsolidationItems
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingIncomeLoss
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax
us-gaap:StatementEquityComponents

us-gaap:OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax
us-gaap:StatementEquityComponents

us-gaap:OtherComprehensiveIncomeLossNetOfTax

us-gaap:OtherNonoperatingIncomeExpense
us-gaap:DerivativeInstrumentRisk, us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:StatementEquityComponents
us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:StatementEquityComponents

us-gaap:ProfitLoss

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax
us-gaap:ConsolidationItems
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments
us-gaap:ProductOrService
us-gaap:ProductOrService, us-gaap:StatementBusinessSegments
us-gaap:ProductOrService, us-gaap:StatementBusinessSegments, us-gaap:Subsegments
us-gaap:StatementBusinessSegments
us-gaap:StatementBusinessSegments, us-gaap:Subsegments
us-gaap:StatementBusinessSegments, us-gaap:SubsegmentsConsolidationItems
us-gaap:StatementBusinessSegments, us-gaap:TimingOfTransferOfGoodOrService
us-gaap:StatementGeographical
us-gaap:StatementGeographical, us-gaap:StatementBusinessSegments
us-gaap:StatementGeographical, us-gaap:StatementBusinessSegments, us-gaap:Subsegments
us-gaap:SubsegmentsConsolidationItems
us-gaap:TimingOfTransferOfGoodOrService

us-gaap:Revenues

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

us-gaap:Assets

us-gaap:Liabilities

us-gaap:LiabilitiesAndStockholdersEquity

us-gaap:StockholdersEquity
us-gaap:StatementEquityComponents

us-gaap:AssetsCurrent

us-gaap:CashAndCashEquivalentsAtCarryingValue
us-gaap:FinancialInstrument

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents

us-gaap:ShortTermInvestments
us-gaap:FinancialInstrument

us-gaap:AccountsReceivableNetCurrent

us-gaap:OtherAssetsCurrent

us-gaap:NoncurrentAssets
us-gaap:StatementGeographical

us-gaap:PropertyPlantAndEquipmentGross
us-gaap:PropertyPlantAndEquipmentByType

us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment

us-gaap:AmortizationOfIntangibleAssets

us-gaap:PropertyPlantAndEquipmentNet

us-gaap:LongTermInvestments

us-gaap:InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures

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

us-gaap:IntangibleAssetsNetExcludingGoodwill
us-gaap:FiniteLivedIntangibleAssetsByMajorClass

us-gaap:FiniteLivedIntangibleAssetsNet

us-gaap:OperatingLeaseRightOfUseAsset
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:PropertyPlantAndEquipmentByType
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:RestructuringPlan

us-gaap:OtherAssetsNoncurrent

us-gaap:EquitySecuritiesFvNi
us-gaap:FairValueByFairValueHierarchyLevel
us-gaap:FinancialInstrument
us-gaap:FinancialInstrument
us-gaap:OtherAssets

us-gaap:AccountsPayableAndAccruedLiabilitiesCurrent

us-gaap:AccountsPayableCurrent

us-gaap:AccruedIncomeTaxesCurrent

us-gaap:ContractWithCustomerLiabilityCurrent
us-gaap:StatementBusinessSegments

us-gaap:DividendsPayableCurrent

us-gaap:LiabilitiesCurrent

us-gaap:OperatingLeaseLiabilityCurrent

us-gaap:OtherAccruedLiabilitiesCurrent

us-gaap:LongTermDebt
us-gaap:LongtermDebtType

us-gaap:LongTermDebtNoncurrent

us-gaap:DeferredIncomeTaxLiabilitiesNet

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

us-gaap:MinorityInterest

us-gaap:OtherLiabilitiesNoncurrent

us-gaap:OperatingLeaseLiabilityNoncurrent

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearTwo

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearThree

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFour

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFive

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive

us-gaap:OperatingLeaseLiability

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDue

us-gaap:LesseeOperatingLeaseLiabilityUndiscountedExcessAmount

us-gaap:StockholdersEquity
us-gaap:StatementEquityComponents

us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
us-gaap:StatementEquityComponents

us-gaap:CommonStockValue

us-gaap:AdditionalPaidInCapitalCommonStock

us-gaap:RetainedEarningsAccumulatedDeficit

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

us-gaap:TreasuryStockValue

us-gaap:MinorityInterest

us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue
us-gaap:StatementEquityComponents

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect

us-gaap:DeferredIncomeTaxExpenseBenefit

us-gaap:IncreaseDecreaseInAccountsReceivable

us-gaap:NetCashProvidedByUsedInOperatingActivities

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

us-gaap:ProfitLoss

us-gaap:ShareBasedCompensation

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:PaymentsToAcquirePropertyPlantAndEquipment

us-gaap:PaymentsToAcquireInvestments

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:PaymentsOfDividendsCommonStock

us-gaap:Dividends
us-gaap:StatementEquityComponents

us-gaap:PaymentsForRepurchaseOfCommonStock

us-gaap:EffectiveIncomeTaxRateContinuingOperations

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber

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

us-gaap:DeferredTaxLiabilities

us-gaap:DeferredTaxAssetsNet

us-gaap:UnrecognizedTaxBenefits

us-gaap:DeferredTaxAssetsValuationAllowance

mco:AdjustedOperatingIncome
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments
us-gaap:BusinessAcquisition
mco:BusinessCombinationAdditionalConsiderationTransferred

mco:CashPaidResultingInReductionOfNoncontrollingInterestOwnership

mco:EffectOfExchangeRateOnDeferredRevenue
us-gaap:StatementBusinessSegments
us-gaap:AwardType
mco:EmployeeServiceShareBasedCompensationTaxBenefitFromVestingOfOtherThanStockOptions

mco:GoodwillAdditionsAndAdjustmentsDuringPeriod
us-gaap:StatementBusinessSegments

mco:IncreaseDecreaseinContractwithCustomerLiabilityExcludingEffectofExchangeRate

mco:OperatingLeaseImpairmentLossAndNonCashRestructuringCharge
us-gaap:DerivativeInstrumentRisk, us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship
mco:OtherComprehensiveIncomeLossAmountOfGainLossOnDerivativesArisingDuringPeriodNetOfTax
us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship

mco:OtherComprehensiveIncomeLossCashFlowHedgeandNetInvestmentHedgeGainLossBeforeReclassificationAfterTax

mco:OtherComprehensiveIncomeLossCashFlowHedgeandNetInvestmentHedgeGainLossReclassificationAfterTax

mco:OtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentBeforeReclassificationAndTax

mco:OtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentBeforeReclassificationNetOfTax

mco:OtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentBeforeReclassificationTax

mco:OtherComprehensiveIncomeLossNetInvestmentHedgeGainLossBeforeReclassificationNetOfTax

mco:OtherComprehensiveIncomeLossNetInvestmentHedgeGainLossBeforeReclassificationTax

mco:OtherComprehensiveIncomeLossNetInvestmentHedgeGainLossReclassificationNetofTax
us-gaap:DerivativeInstrumentRisk, us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship
us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship

mco:OtherComprehensiveIncomeLossNetInvestmentHedgeGainLossReclassificationTax

mco:OtherNonOperatingIncomeExpenseOther

mco:PaymentsOfDebtIssuanceAndDebtExtinguishmentOrDebtPrepaymentCosts

mco:PensionExpenseNetPeriodicPensionCostsOther
us-gaap:ProductOrService
mco:PercentageOfRevenues
us-gaap:ProductOrService, us-gaap:StatementBusinessSegments
us-gaap:ProductOrService, us-gaap:StatementBusinessSegments, us-gaap:Subsegments

mco:UnrecognizedTaxBenefitsAndOtherNonCurrentTaxLiabilitiesPeriodIncreaseDecrease

mco:UnrecognizedTaxBenefitsInterestReductionResultingFromLapseOfApplicableStatuteOfLimitationsAndSettlement
us-gaap:StatementScenario, us-gaap:SubsequentEventType

mco:UnrecognizedTaxBenefitsReductionResultingFromLapseOfApplicableStatuteOfLimitationsAndSettlement
us-gaap:StatementScenario, us-gaap:SubsequentEventType
us-gaap:LongtermDebtType
us-gaap:AccretionExpense
us-gaap:BusinessAcquisition
us-gaap:BusinessCombinationConsiderationTransferred1
us-gaap:DerivativeInstrumentRisk, us-gaap:HedgingDesignation, us-gaap:IncomeStatementLocation
us-gaap:ChangeInUnrealizedGainLossOnFairValueHedgingInstruments1
us-gaap:DerivativeInstrumentRisk, us-gaap:HedgingDesignation, us-gaap:IncomeStatementLocation
us-gaap:ChangeInUnrealizedGainLossOnHedgedItemInFairValueHedge1

us-gaap:ContractWithCustomerLiabilityCumulativeCatchUpAdjustmentToRevenueChangeInMeasureOfProgress
us-gaap:StatementBusinessSegments

us-gaap:ContractWithCustomerLiabilityIncreaseDecreaseForContractAcquiredInBusinessCombination
us-gaap:StatementBusinessSegments

us-gaap:ContractWithCustomerLiabilityRevenueRecognized
us-gaap:StatementBusinessSegments
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanAmortizationOfGainsLosses
us-gaap:RetirementPlanFundingStatus, us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanContributionsByEmployer
us-gaap:RetirementPlanFundingStatus, us-gaap:RetirementPlanType
us-gaap:RetirementPlanType
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanExpectedReturnOnPlanAssets

us-gaap:DefinedBenefitPlanInterestCost
us-gaap:RetirementPlanType
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanNetPeriodicBenefitCost
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanRecognizedNetGainLossDueToSettlements1
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanServiceCost

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

us-gaap:EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents
us-gaap:EffectsOnFutureEarningsAndCashFlowsResultingFromExitPlan, us-gaap:RestructuringPlan
us-gaap:EffectOnFutureEarningsAmount
us-gaap:Range, us-gaap:EffectsOnFutureEarningsAndCashFlowsResultingFromExitPlan, us-gaap:RestructuringPlan
us-gaap:Range, us-gaap:StatementScenario, us-gaap:EffectsOnFutureEarningsAndCashFlowsResultingFromExitPlan, us-gaap:SubsequentEventType

us-gaap:EffectiveIncomeTaxRateReconciliationShareBasedCompensationExcessTaxBenefitAmount

us-gaap:EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense

us-gaap:EmployeeServiceShareBasedCompensationTaxBenefitFromExerciseOfStockOptions
us-gaap:FinancialInstrument
us-gaap:EquitySecuritiesFvNiUnrealizedGainLoss

us-gaap:ForeignCurrencyTransactionGainLossBeforeTax
us-gaap:IncomeStatementLocation
us-gaap:GainLossOnForeignCurrencyDerivativeInstrumentsNotDesignatedAsHedgingInstruments

us-gaap:GainLossOnSaleOfBusiness
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:GoodwillTranslationAndPurchaseAccountingAdjustments
us-gaap:StatementBusinessSegments

us-gaap:IncomeLossFromEquityMethodInvestments

us-gaap:IncreaseDecreaseInAccountsPayableAndAccruedLiabilities

us-gaap:IncreaseDecreaseInContractWithCustomerLiability
us-gaap:StatementBusinessSegments

us-gaap:IncreaseDecreaseInOtherOperatingAssets

us-gaap:IncreaseDecreaseInOtherOperatingLiabilities

us-gaap:IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets

us-gaap:IncrementalCommonSharesAttributableToShareBasedPaymentArrangements

us-gaap:InterestAndOtherIncome

us-gaap:InterestExpenseBorrowings

us-gaap:LeaseCost
dei:LegalEntity
us-gaap:LossContingencyLossInPeriod

us-gaap:MinorityInterestDecreaseFromRedemptions
us-gaap:StatementEquityComponents

us-gaap:NetIncomeLossIncludingPortionAttributableToNonredeemableNoncontrollingInterest
us-gaap:StatementEquityComponents
us-gaap:StatementEquityComponents
us-gaap:OciBeforeReclassificationsNetOfTaxAttributableToParent

us-gaap:OperatingLeaseCost

us-gaap:OperatingLeaseImpairmentLoss

us-gaap:OperatingLeasePayments

us-gaap:OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodNetOfTax
us-gaap:StatementEquityComponents

us-gaap:OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodTax

us-gaap:OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditBeforeTax

us-gaap:OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditNetOfTax
us-gaap:StatementEquityComponents

us-gaap:OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditTax

us-gaap:OtherComprehensiveIncomeLossBeforeTax

us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationTax

us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAfterTax
us-gaap:DerivativeInstrumentRisk, us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship
us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship

us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAndTax

us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationTax

us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationAfterTax
us-gaap:DerivativeInstrumentRisk, us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship
us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship

us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationBeforeTax

us-gaap:OtherComprehensiveIncomeLossDerivativeExcludedComponentIncreaseDecreaseAfterAdjustmentsAndTax
us-gaap:DerivativeInstrumentRisk, us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship
us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship

us-gaap:OtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentTax

us-gaap:OtherComprehensiveIncomeLossNetInvestmentHedgeGainLossBeforeReclassificationAndTax

us-gaap:OtherComprehensiveIncomeLossNetInvestmentHedgeGainLossReclassificationBeforeTax
us-gaap:StatementEquityComponents
us-gaap:OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent

us-gaap:OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansNetUnamortizedGainLossArisingDuringPeriodBeforeTax

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansBeforeTax

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansNetOfTax
us-gaap:StatementEquityComponents

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansTax

us-gaap:OtherComprehensiveIncomeLossTax

us-gaap:PaymentsForHedgeInvestingActivities
us-gaap:RestructuringCostAndReserve, us-gaap:RestructuringPlan
us-gaap:PaymentsForRestructuring
us-gaap:LongtermDebtType
us-gaap:PaymentsOfDebtExtinguishmentCosts

us-gaap:PaymentsOfDividendsMinorityInterest

us-gaap:PaymentsRelatedToTaxWithholdingForShareBasedCompensation
us-gaap:BusinessAcquisition
us-gaap:PaymentsToAcquireBusinessesGross

us-gaap:PaymentsToAcquireBusinessesNetOfCashAcquired

us-gaap:ProceedsFromHedgeInvestingActivities

us-gaap:ProceedsFromIssuanceOfCommercialPaper

us-gaap:ProceedsFromNotesPayable

us-gaap:ProceedsFromSaleMaturityAndCollectionOfShorttermInvestments

us-gaap:ProceedsFromStockOptionsExercised

us-gaap:ProceedsFromStockPlans

us-gaap:ProvisionForDoubtfulAccounts
us-gaap:StatementEquityComponents
us-gaap:ReclassificationFromAociCurrentPeriodNetOfTaxAttributableToParent

us-gaap:RepaymentsOfCommercialPaper
us-gaap:LongtermDebtType
us-gaap:RepaymentsOfDebt

us-gaap:RepaymentsOfNotesPayable
us-gaap:RestructuringCostAndReserve, us-gaap:RestructuringPlan
us-gaap:RestructuringAndRelatedCostIncurredCost

us-gaap:RestructuringCharges
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments
us-gaap:RestructuringPlan

us-gaap:RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodTotalFairValue

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriod

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue
us-gaap:StatementEquityComponents
us-gaap:StockIssuedDuringPeriodSharesShareBasedCompensation

us-gaap:StockIssuedDuringPeriodSharesStockOptionsExercised

us-gaap:StockIssuedDuringPeriodValueShareBasedCompensation
us-gaap:StatementEquityComponents

us-gaap:SubleaseIncome
us-gaap:StatementEquityComponents
us-gaap:TreasuryStockSharesAcquired

us-gaap:TreasuryStockValueAcquiredCostMethod
us-gaap:StatementEquityComponents

us-gaap:UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestExpense

us-gaap:UnrecognizedTaxBenefitsPeriodIncreaseDecrease
us-gaap:IncomeTaxAuthority

us-gaap:VariableLeaseCost

dei:EntityCommonStockSharesOutstanding

mco:CustomerBillingsAndPaymentsReceivedInAdvance

mco:DeferredTaxAssetsAccumulatedDepreciationAndAmortizationNonCurrent

mco:DeferredTaxAssetsCapitalizedCost

mco:DeferredTaxAssetsOperatingLeaseLiabilities

mco:DeferredTaxLiabilitiesAccumulatedDepreciationAndAmortizationNonCurrent

mco:DisposalGroupIncludingDiscontinuedOperationIndemnificationProvisionLiability
us-gaap:DisposalGroupClassification, us-gaap:IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperations

mco:FiniteLivedIntangibleAssetExpectedAmortizationAfterYearFour

mco:LesseeOperatingLeaseLiabilityToBePaidAfterYearFour

mco:LongTermDebtMaturityAfterYearFour
us-gaap:LongtermDebtType

us-gaap:AccruedBonusesCurrent

us-gaap:AccruedProfessionalFeesCurrent

us-gaap:AccruedRoyaltiesCurrent

us-gaap:AllowanceForDoubtfulAccountsReceivableCurrent

us-gaap:AssetsFairValueDisclosure
us-gaap:FairValueByFairValueHierarchyLevel
us-gaap:BusinessAcquisition
us-gaap:BusinessAcquisitionPercentageOfVotingInterestsAcquired
us-gaap:Range, us-gaap:DebtInstrument
us-gaap:BusinessCombinationContingentConsiderationLiability

us-gaap:BusinessCombinationIndemnificationAssetsAmountAsOfAcquisitionDate
us-gaap:BusinessAcquisition
us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssets
us-gaap:BusinessAcquisition
us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCashAndEquivalents
us-gaap:BusinessAcquisition
us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssets
us-gaap:BusinessAcquisition
us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsReceivables
us-gaap:BusinessAcquisition
us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilities
us-gaap:BusinessAcquisition
us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesAccountsPayable
us-gaap:BusinessAcquisition
us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesDeferredRevenue
us-gaap:BusinessAcquisition
us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedDeferredTaxLiabilities
us-gaap:BusinessAcquisition
us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibles
us-gaap:BusinessAcquisition, us-gaap:FiniteLivedIntangibleAssetsByMajorClass
us-gaap:BusinessAcquisition
us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilities
us-gaap:BusinessAcquisition
us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNoncurrentLiabilities
us-gaap:BusinessAcquisition
us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNoncurrentLiabilitiesOther
us-gaap:BusinessAcquisition
us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOtherNoncurrentAssets
us-gaap:BusinessAcquisition
us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedNet
us-gaap:CapitalizedContractCost, us-gaap:StatementBusinessSegments
us-gaap:CapitalizedContractCostNet
us-gaap:StatementBusinessSegments

us-gaap:CapitalizedContractCostNetCurrent

us-gaap:CapitalizedContractCostNetNoncurrent

us-gaap:CashSurrenderValueOfLifeInsurance

us-gaap:ContractWithCustomerLiability
us-gaap:StatementBusinessSegments

us-gaap:ContractWithCustomerLiabilityNoncurrent
us-gaap:StatementBusinessSegments

us-gaap:DebtInstrumentFaceAmount
us-gaap:LongtermDebtType

us-gaap:DebtInstrumentFairValue
us-gaap:FairValueByFairValueHierarchyLevel
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:LongtermDebtType
us-gaap:LongtermDebtType

us-gaap:DebtInstrumentUnamortizedDiscountPremiumNet
us-gaap:LongtermDebtType

us-gaap:DeferredIncomeTaxAssetsNet

us-gaap:DeferredIncomeTaxLiabilities

us-gaap:DeferredTaxAssetsDeferredIncome

us-gaap:DeferredTaxAssetsGross

us-gaap:DeferredTaxAssetsHedgingTransactions

us-gaap:DeferredTaxAssetsOperatingLossCarryforwards

us-gaap:DeferredTaxAssetsOther

us-gaap:DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsEmployeeBenefits

us-gaap:DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost

us-gaap:DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAllowanceForDoubtfulAccounts

us-gaap:DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsContingencies

us-gaap:DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsRestructuringCharges

us-gaap:DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsSelfInsurance

us-gaap:DeferredTaxLiabilitiesDeferredExpenseReservesAndAccruals

us-gaap:DeferredTaxLiabilitiesDerivatives

us-gaap:DeferredTaxLiabilitiesInvestments

us-gaap:DeferredTaxLiabilitiesLeasingArrangements

us-gaap:DeferredTaxLiabilitiesOther

us-gaap:DeferredTaxLiabilitiesTaxDeferredIncome

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:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanAmountsRecognizedInBalanceSheet

us-gaap:DefinedBenefitPlanAssetsForPlanBenefitsNoncurrent
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:DefinedBenefitPlanBenefitObligation
us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsFiveFiscalYearsThereafter
us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsNextTwelveMonths
us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFive
us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFour
us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsYearThree
us-gaap:RetirementPlanFundingStatus, us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanExpectedFutureEmployerContributionsNextFiscalYear
us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType
us-gaap:RetirementPlanFundingStatus, us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanExpectedFutureEmployerContributionsRemainderOfFiscalYear
us-gaap:RetirementPlanFundingStatus, us-gaap:RetirementPlanType
us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanFundedStatusOfPlan
us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateAccumulatedBenefitObligation
us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateProjectedBenefitObligation
us-gaap:DefinedBenefitPlanByPlanAssetCategories, us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanWeightedAverageAssetAllocations

us-gaap:DepositAssets

us-gaap:DerivativeAssets
us-gaap:FairValueByFairValueHierarchyLevel

us-gaap:DerivativeAssetsCurrent

us-gaap:DerivativeAssetsNoncurrent
mco:FixedRate, us-gaap:DerivativeInstrumentRisk, us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship, us-gaap:TransactionType
us-gaap:DerivativeAverageFixedInterestRate

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

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

us-gaap:DerivativeLiabilities
us-gaap:FairValueByFairValueHierarchyLevel

us-gaap:DerivativeLiabilitiesCurrent

us-gaap:DerivativeLiabilitiesNoncurrent
mco:FixedRate, us-gaap:DerivativeInstrumentRisk, us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship, us-gaap:TransactionType
us-gaap:DerivativeNotionalAmount
us-gaap:DerivativeInstrumentRisk, us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship
us-gaap:DerivativeInstrumentRisk, us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship, us-gaap:HedgingDesignation
us-gaap:DerivativeInstrumentRisk, us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship, us-gaap:LongtermDebtType
us-gaap:DerivativeInstrumentRisk, us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship, us-gaap:TransactionType
us-gaap:DerivativeInstrumentRisk, us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship, us-gaap:TransactionType, us-gaap:VariableRate
us-gaap:DerivativeInstrumentRisk, us-gaap:HedgingDesignation

us-gaap:EmployeeRelatedLiabilitiesCurrent
us-gaap:AwardType
us-gaap:EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized

us-gaap:EmployeeStockOwnershipPlanESOPSharesInESOP
us-gaap:FinancialInstrument
us-gaap:EquitySecuritiesFvNiCost
us-gaap:FinancialInstrument
us-gaap:EquitySecuritiesFvNiCurrentAndNoncurrent
us-gaap:FiniteLivedIntangibleAssetsByMajorClass
us-gaap:FiniteLivedIntangibleAssetsAccumulatedAmortization

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseRemainderOfFiscalYear

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearFive

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearFour

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearThree

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo
us-gaap:FiniteLivedIntangibleAssetsByMajorClass
us-gaap:FiniteLivedIntangibleAssetsGross

us-gaap:ForeignCurrencyContractAssetFairValueDisclosure

us-gaap:ForeignCurrencyContractsLiabilityFairValueDisclosure

us-gaap:GoodwillGross
us-gaap:StatementBusinessSegments

us-gaap:GoodwillImpairedAccumulatedImpairmentLoss
us-gaap:StatementBusinessSegments

us-gaap:IncomeTaxExaminationLiabilityRefundAdjustmentFromSettlementWithTaxingAuthority

us-gaap:InterestPayableCurrent

us-gaap:InterestRateDerivativeAssetsAtFairValue

us-gaap:InterestRateDerivativeLiabilitiesAtFairValue

us-gaap:InterestRateDerivativesAtFairValueNet
us-gaap:LongtermDebtType

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths

us-gaap:LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear

us-gaap:LiabilitiesFairValueDisclosure
us-gaap:FairValueByFairValueHierarchyLevel

us-gaap:LiabilityForUncertainTaxPositionsNoncurrent

us-gaap:LifeInsuranceCorporateOrBankOwnedAmount

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive
us-gaap:LongtermDebtType

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive
us-gaap:LongtermDebtType

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour
us-gaap:LongtermDebtType

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree
us-gaap:LongtermDebtType

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo

us-gaap:OperatingLeaseWeightedAverageDiscountRatePercent

us-gaap:OtherAccruedLiabilitiesNoncurrent

us-gaap:OtherAssetsMiscellaneousCurrent

us-gaap:OtherAssetsMiscellaneousNoncurrent

us-gaap:PensionAndOtherPostretirementDefinedBenefitPlansCurrentLiabilities
us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType

us-gaap:PrepaidExpenseCurrent

us-gaap:PrepaidTaxes

us-gaap:RedeemableNoncontrollingInterestEquityCarryingAmount
us-gaap:RestructuringCostAndReserve, us-gaap:RestructuringPlan
us-gaap:RestructuringAndRelatedCostCostIncurredToDate1
us-gaap:RestructuringCostAndReserve, us-gaap:StatementBusinessSegments
us-gaap:RestructuringPlan, us-gaap:StatementBusinessSegments
us-gaap:Range, us-gaap:RestructuringCostAndReserve, us-gaap:RestructuringPlan
us-gaap:RestructuringAndRelatedCostExpectedCost1
us-gaap:Range, us-gaap:RestructuringPlan
us-gaap:Range, us-gaap:SubsequentEventType

us-gaap:RestructuringReserve
us-gaap:RestructuringCostAndReserve
us-gaap:RestructuringPlan

us-gaap:RestructuringReserveCurrent

us-gaap:RestructuringReserveNoncurrent
us-gaap:StatementBusinessSegments
us-gaap:RevenueRemainingPerformanceObligation
us-gaap:StatementBusinessSegments
us-gaap:RevenueRemainingPerformanceObligationPercentage
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestExercisableWeightedAverageExercisePrice

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingAggregateIntrinsicValue

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingNumber

us-gaap:SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1
us-gaap:SubsequentEventType
us-gaap:StockRepurchaseProgramAuthorizedAmount1
us-gaap:ShareRepurchaseProgram
us-gaap:StockRepurchaseProgramRemainingAuthorizedRepurchaseAmount1

us-gaap:UnamortizedDebtIssuanceExpense
us-gaap:LongtermDebtType
us-gaap:StatementBusinessSegments
us-gaap:UnbilledReceivablesCurrent

us-gaap:UnrecognizedTaxBenefitsInterestOnIncomeTaxesAccrued

us-gaap:UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate

Plots across concepts


IncomeStatement
Other Comprehensive Income Loss Net Of Tax
Expenses
Other Nonoperating Income Expense
Balance Sheet
Short Term Investments
Assets
Derivative Assets
Current Assets
Other Assets Current
NonCurrent Assets
Long Term Investments
PropertyPlantAndEquipmentNet
Property Plant And Equipment Net
Liabilities
Derivative Liabilities
Current Liabilities
Accounts Payable Current
Noncurrent Liabilities
Minority Interest
Stockholders Equity
Accumulated Other Comprehensive Income Loss Net Of Tax
CashFlow
Net Cash Provided By Used In Financing Activities
NetCashProvidedByUsedInOperatingActivities
Increase Decrease In Accounts Receivable
NetCashProvidedByUsedInInvestingActivities
Net Cash Provided By Used In Investing Activities
NetCashProvidedByUsedInFinancingActivities
Net Cash Provided By Used In Financing Activities
Shares
Weighted Average Number Of Shares Outstanding Basic
DividendsAndRepurchase
Dividends
OperatingLeaseLiability
Operating Lease Liability Current
NonoperatingIncomeExpense
Nonoperating Income Expense
LesseeOperatingLeaseLiabilityPaymentsDue
Lessee Operating Lease Liability Undiscounted Excess Amount
AccountsReceivable
Allowance For Doubtful Accounts Receivable Current

Tables

  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-09-302009-06-302009-03-31
us-gaap:CommonStockValue ▁▁▁▁▁▁▁████████3.03.03.03.03.03.03.03.43.43.43.43.43.43.43.4NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:SharesIssued us-gaap:StatementEquityComponents us-gaap:CommonStock██████████████▁342.9342.9342.9342.9342.9342.9342.9342.9342.9342.9342.9342.9342.9342.93.4NANANA342.9NANANA342.9NANANA342.9NANANA342.9NANANA342.9NANANA342.9NANANA342.9NANANA342.9NANANA
 us-gaap:SharesIssued us-gaap:StatementEquityComponents us-gaap:TreasuryStock████████▁▁▁█▁▁▁156.7155.7155.8155.1155.2155.4155.2154.2-153.7-153.3-151.6151.3-151.0-151.0-151.9NANANA-152.2NANANA-146.8NANANA-138.5NANANA-128.9NANANA-119.7NANANA-120.5NANANA-112.1NANANA-106.0NANANA
us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding ▁█187.9188.6NA189.3189.0189.6NA191.1191.3192.8NA194.5194.4194.5NA194.1193.8194.3NA194.3195.8197.9NA202.5204.4206.5NA214.2215.7218.5NA222.0226.2227.2NA226.1227.2227.4NA229.0231.5231.4NA235.7236.5239.1NANANANA
us-gaap:WeightedAverageNumberOfSharesOutstandingBasic ▁█186.7187.2NA187.8187.7187.5NA189.0189.4190.4NA191.8191.9191.4NA191.1191.0191.1NA191.7193.4195.0NA199.4201.3202.7NA210.4212.0214.0NA217.8222.3223.3NA222.5223.9223.4NA226.0228.2228.9NA234.3235.3236.9NANANANA
us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount ▁█0.20.3NA0.30.30.3NA0.20.30.4NA0.30.50.7NA0.50.71.0NA0.51.21.5NA0.60.81.0NA0.50.71.0NA2.64.44.9NA6.67.27.0NA10.79.413.7NA16.016.616.4NANANANA
us-gaap:EarningsPerShareBasic ▇█▅▆▇▆▆▆▅▆▅▅▆▆▄▅▅▆▁▅▅▅▅▅▅▅▅▅▅▅▅▄▅▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄3.093.931.68000000000000062.492.712.61.912.011.641.961.311.621.961.950.131.661.631.81-2.251.331.320.951.111.161.31.141.141.021.511.020.960.841.010.840.720.830.770.780.430.580.830.680.590.580.510.480.430.430.460.38
us-gaap:EarningsPerShareDiluted ▇█▅▆▇▆▆▆▅▆▅▅▆▆▄▅▅▆▁▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄3.073.91.66000000000000012.472.692.571.881.991.621.931.291.591.941.920.131.631.611.78-2.251.311.30.931.091.141.281.111.121.01.481.00.940.831.00.830.70.810.760.760.430.570.820.670.580.580.510.470.430.420.460.38
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-09-302009-06-302009-03-31
 Cost Ratio us-gaap:ConsolidationItems,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,mco:MoodysAnalytics█▁575.0566.0NANA499.0498.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 Cost Ratio us-gaap:ConsolidationItems,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,mco:MoodysInvestorsService▁█1022.01076.0NANA973.0831.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 Operating Margin us-gaap:ConsolidationItems,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,mco:MoodysAnalytics██▇▇▅▅▆▅▅▅▄▃▃▂▄▁575.0566.0557.0532.0499.0498.0515.2496.0477.4474.4467.0438.6425.2411.8445.2372.8NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 Operating Margin us-gaap:ConsolidationItems,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,mco:MoodysInvestorsService▇█▃▅▆▄▃▃▃▂▁▂▃▃▃▂1022.01076.0773.0863.0973.0831.0754.3780.9771.4702.4627.4676.4782.9749.7754.4723.2NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-09-302009-06-302009-03-31
 TTM Greenblatt ROC _ _██▆▇▇▇▆▆▆▆▅▆▆▆▆▆▆▆▁▆▆▅▅▅▆▅▅▅▆▅▅▅▅▅▅▅▅▅▄▅▅▅▅▄▅▅▄801.0853.0444.0642.0710.0592.0504.0548.8483.5461.7376.6466.8534.0490.8462.8445.4457.5443.4-473.1397.5410.2304.1333.1349.7419.3371.3344.7349.7411.7333.0311.9291.5350.8280.4260.2269.7278.5269.0172.1196.1270.1250.1196.6188.9190.5196.8178.9NANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-09-302009-06-302009-03-31
us-gaap:ComprehensiveIncomeNetOfTax ▇█▆▇▇▆▆▅▆▆▅▅▅▇▄▆▆▆▁▅▅▅▅▅▆▅▅▅▆▅▅▅▅▅▅▅▅▅▄▄▅▅592.0728.0386.0505.0520.0373.0457.6288.2319.6363.6166.1272.8123.4495.5111.7368.6359.8353.2-487.9266.5240.2222.4198.7192.1303.3142.9134.7128.9333.2211.3252.3233.6214.4131.7163.7219.0130.4202.359.258.7199.9179.5NANANANANANANANA
us-gaap:ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest ▅▆▆▅▂▄▄▆▆▇▃▃▄▇▅▆█▇▃▁▆▆▆▆▆▅▆▆▆▆▆▆▆▆▆▆▆▆▅▅▆▆-1.02.04.01.0-11.0-2.0-3.73.13.48.2-9.1-8.4-3.28.9-0.23.110.85.7-8.0-14.82.62.22.52.22.41.25.13.35.23.72.92.92.92.71.92.52.34.00.40.32.12.0NANANANANANANANA
us-gaap:ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest ▇█▆▇▇▆▆▅▆▆▅▅▅▇▄▆▆▆▁▅▅▅▅▅▆▅▅▅▆▅▅▅▅▅▅▅▅▅▄▄▅▅▅▅▅▄591.0730.0390.0506.0509.0371.0453.9291.3323.0371.8157.0264.4120.2504.4111.5371.7370.6358.9-495.9251.7242.8224.6201.2194.3305.7144.1139.8132.2338.4215.0255.2236.5217.3134.4165.6221.5132.7206.359.659.0202.0181.5130.1196.6124.370.5NANANANA
us-gaap:CostOfRevenue ▄▆█▃▃▁▃▂▁▁365.0393.0409.0364.0362.0340.0355.0350.0340.0342.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:CostsAndExpenses ▄▄█▂▃▂▃▁▃▁752.0747.0846.0714.0725.0698.0729.0691.0731.0680.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:GainsLossesOnExtinguishmentOfDebt NANA0.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest 758.0NANANA666.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments NA862.0400.0599.0666.0564.0452.4512.8433.3411.5321.6412.8495.5441.1407.7465.8462.0451.3-465.5369.0378.9275.6312.3343.6379.2344.5335.8328.4485.2311.6301.8263.5336.8267.2236.4264.4264.6258.6155.6184.8264.2235.2172.6181.4177.9182.5NANANANA
 us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome,us-gaap:StatementEquityComponents us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome,us-gaap:AccumulatedDefinedBenefitPlansAdjustmentNANA-3.0-2.0-1.0-2.00.0-1.0-1.0-1.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:IncomeTaxExpenseBenefit ▅▄▃▄▄▃▃▄▄▂▃▃▄▃█▄▄▃▁▄▄▃▃▄▄▄▃▄▄▃▃▃▃▃▃▃▃▃▃▃▃▃▂▂▃▃181.0126.086.0132.0157.077.091.4130.4121.337.968.9100.8117.664.3379.2146.1148.4105.4-40.0112.4120.889.091.9109.8115.1113.294.4109.9160.889.992.276.7108.476.174.477.988.983.157.552.773.578.133.744.255.367.8NANANANA
us-gaap:IncomeTaxesPaid █▂▄█▃▁▅▃▅▁▃▃▆▂▅▄▂▁▄▃▄▁▃▄▅▁▁▄▄▃▂▁▅▃▁▁▄▄▁▂259.068.0140.0263.082.029.0155.5104.5161.136.9105.199.7193.144.2171.7110.860.523.4112.991.0129.822.097.5108.8159.731.434.8117.9140.476.368.435.7153.877.821.436.9120.9114.124.551.1NANANANANANANANANANA
us-gaap:InterestIncomeExpenseNonoperatingNet ▂█▂▂▁▄▁▃▂▂▂▁▂▂▂▃▃▃▄▄▄▄▅▆▅▅▅▄▅-49.0-7.0-52.0-53.0-60.0-40.0-59.0-45.9-50.6-52.5-55.5-56.4-53.4-50.7-52.9-48.1-45.0-42.4-34.0-35.4-34.3-34.1-28.1-25.8-31.9-29.3-29.3-37.7-26.0NANANANANANANANANANANANANANANANANANANANANA
us-gaap:InterestPaidNet ▁█13.073.0NA47.023.049.0NA50.625.073.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:NetIncomeLoss ▇█▅▆▇▇▆▆▅▆▅▅▆▆▄▅▅▆▁▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▄▄▅▅▄▄▄▄▄▄▄▄577.0736.0314.0467.0509.0488.0359.0379.4310.3372.9250.3310.2376.2372.925.5317.3312.2345.6-428.6255.3255.5184.4217.9231.6261.7230.1236.3215.2319.2218.0206.7183.9225.5188.4160.1183.9172.5173.596.2130.7189.0155.5137.4136.0121.0113.4101.9100.6109.390.2
us-gaap:NetIncomeLossAttributableToNoncontrollingInterest NANA0.00.00.0-1.01.63.01.70.72.41.81.73.93.02.41.40.33.11.32.62.22.52.22.41.25.13.35.23.72.92.92.92.71.92.63.22.01.91.41.71.61.51.21.61.3NANANANA
us-gaap:NonoperatingIncomeExpense ▂▄▂▂▂▂▁▂▁▁▁▁▂▁▁▅▄▄▄▂▂▂▃▄▂▃▄▃█▃▃▂▃▃▃▄▃▃▃▃▄▃▃▄▃▃-43.09.0-44.0-43.0-44.0-28.0-51.6-36.0-50.2-50.2-55.0-54.0-38.5-49.7-55.120.44.57.97.6-28.5-31.3-28.5-20.8-6.1-40.1-26.8-8.9-21.373.5-21.4-10.1-28.0-14.0-13.2-23.8-5.3-13.9-10.4-16.5-11.3-5.9-14.9-24.0-7.5-12.6-14.3NANANANA
us-gaap:OperatingExpenses NANANA714.0725.0698.0728.8691.7730.1680.4683.5614.0641.1635.9702.7617.5543.0531.81415.2519.6518.7512.0532.8485.2498.8494.3532.8466.4461.8434.2467.3414.0405.2451.4494.0418.8362.3377.8395.0335.2335.1327.0367.7324.4287.3279.8NANANANA
 us-gaap:OperatingExpenses us-gaap:ConsolidationItems us-gaap:IntersegmentEliminationNANANA-39.0-37.0-39.0-36.7-36.4-36.0-34.0-34.0-34.2NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:OperatingExpenses us-gaap:ConsolidationItems,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,mco:MoodysAnalyticsNANANA414.0393.0394.0417.4388.2415.0378.0393.0344.7NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:OperatingExpenses us-gaap:ConsolidationItems,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,mco:MoodysInvestorsServiceNANANA339.0369.0343.0348.1339.9352.0336.0325.0303.5NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:OperatingIncomeLoss ██▆▇▇▇▆▆▆▆▅▆▆▆▆▆▆▆▁▆▆▅▅▅▆▅▅▅▆▅▅▅▅▅▅▅▅▅▄▅▅▅▅▄▅▅▄▄▄▄801.0853.0444.0642.0710.0592.0504.0548.8483.5461.7376.6466.8534.0490.8462.8445.4457.5443.4-473.1397.5410.2304.1333.1349.7419.3371.3344.7349.7411.7333.0311.9291.5350.8280.4260.2269.7278.5269.0172.1196.1270.1250.1196.6188.9190.5196.8178.9172.5187.2148.9
us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax ████▅▁0.01.00.00.0-14.0-35.0NANA0.1NANANA-0.1NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax us-gaap:StatementEquityComponents us-gaap:AccumulatedOtherComprehensiveIncome████▅▁0.01.00.00.0-14.0-35.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax us-gaap:StatementEquityComponents us-gaap:Parent████▅▁0.01.00.00.0-14.0-35.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax ▆▆█▇▆▅▅█▆▇▁▆▇▆6.0-9.0105.044.06.0-81.0-64.0102.7-29.223.5-301.64.127.4-10.9NANANANA-60.09.2-19.436.0-25.1-41.732.1-90.6NANANANANANANANA11.732.8-37.9NA-10.5-74.413.3NANANANANANANANANA
us-gaap:OtherComprehensiveIncomeLossNetOfTax ▆▆▇▆▆▄▇▄▆▆▄▅▁█▇▇▇▆▄▆▅▆▅▅▆▄▄▄▆▆▇▇▅▅▆▆▅▆14.0-6.076.039.00.0-116.092.9-91.111.0-1.8-95.7-47.6-257.7127.683.052.057.013.0-70.4-4.9-15.338.0-19.2-39.541.6-87.2-101.6-86.314.0-6.745.649.7-11.1-56.73.635.0-43.030.8NANANANANANANANANANANANA
us-gaap:OtherNonoperatingIncomeExpense ▃▄▃▄▄▄▃▄▂▃▂▃▄▂▂▂▃▁█▃▃▃▃▅▁▃▅▅▂▃▄▂▃▃▂▄▃▂▂▃▃▃▁▃▂▂6.016.08.010.016.012.07.49.90.42.30.52.414.91.0-2.2-1.48.3-9.441.66.93.05.67.319.7-8.22.520.416.4-3.32.413.6-3.67.78.8-2.210.02.7-0.10.41.68.23.3-6.65.3-3.6-1.0NANANANA
us-gaap:ProfitLoss ▇█▅▆▇▆▆▆▅▆▅▅▆▆▄▅▅▆▁▅▅▅▅▅▅▅▅▅▆▅▅▅▅▅▅▅▅▅▄▄▅▅▄▄▄▄577.0736.0314.0467.0509.0487.0361.0382.4312.0373.6252.7312.0377.9376.828.5319.7313.6345.9-425.5256.6258.1186.6220.4233.8264.1231.3241.4218.5324.4221.7209.6186.8228.4191.1162.0186.5175.7175.598.1132.1190.7157.1138.9137.2122.6114.7NANANANA
us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax ██▆▇▇▆▆▆▆▅▅▅▆▅▅▅▄▄▄▄▄▃▄▄▄▄▄▃▄▃▃▃▃▃▃▃▂▂▂▂▂▂▂▂▁▁▁▁▁▁1553.01600.01290.01356.01435.01290.01233.01240.51213.61142.11060.11080.81175.11126.71165.51062.91000.5975.2942.1917.1928.9816.1865.9834.9918.1865.6877.5816.1873.5767.2779.2705.5756.0731.8754.2688.5640.8646.8567.1531.3605.2577.1564.3513.3477.8476.6485.8451.8450.7408.9
us-gaap:Revenues ██▆▇▇▆▆▆▆▅▅▅▆▅▅▅▄▄▄▄▄▃▄▄▄▄▄▃▄▃▃▃▃▃▃▃▂▂▂▂▂▂▂▂▁▁▁▁▁▁1553.01600.01290.01356.01435.01290.01233.01240.51213.61142.11060.11080.81175.11126.71165.51062.91000.5975.2942.1917.1928.9816.1865.9834.9918.1865.6877.5816.1873.5767.2779.2705.5756.0731.8754.2688.5640.8646.8567.1531.3605.2577.1564.3513.3477.8476.6485.8451.8450.7408.9
us-gaap:SellingGeneralAndAdministrativeExpense ▇▆█▆▇▆▇▆▆▆▆▅▅▆▇▅▄▄▅▄▄▄▅▄▄▄▅▃▄▃▄▃▃▄▄▃▂▂▃▂▁▂▂▂▁▁327.0293.0350.0271.0307.0301.0318.9291.9274.7281.5278.2260.3270.5271.1304.6247.2217.7221.9253.2225.3228.6232.9252.2220.8227.0221.3250.3206.5217.4195.1223.0187.1185.0227.0236.4187.4159.6168.8193.2145.0142.9148.5169.5152.2137.5128.8NANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-09-302009-06-302009-03-31
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-09-302009-06-302009-03-31
us-gaap:Assets ███▇▇▇▆▆▆▆▆▅▅▆▅▅▄▃▃▃▃▃▃▃▃▃▂▃▃▂▂▂▂▂▂▂▁▁▁▁▁▁▁12552.012500.012409.011672.011298.011306.010265.09477.89591.69518.19526.28439.18751.69014.08594.28304.96536.35435.95327.35019.35044.95114.95123.44772.94999.54976.04669.04993.74786.64353.44395.14154.53794.33911.23960.93662.32963.92994.42876.12521.32744.62524.42540.3NANANA2003.3NANANA
us-gaap:Liabilities ███▇▇█▇▆▇▇▆▆▆▆▆▆▅▄▄▃▃▃▃▃▃▃▃▂▂▂▂▂▁▂▂▂▁▁▁▁▁▁▁10172.010275.010646.09979.010061.010501.09428.08774.79016.99193.18869.77833.08291.58594.08709.18461.77003.86160.16354.65377.25414.45466.45456.45013.15102.95122.24626.14375.83990.13853.63967.23781.13258.83371.03492.03271.02785.12833.82974.02695.52761.22747.62838.7NANANA2599.4NANANA
us-gaap:LiabilitiesAndStockholdersEquity ███▇▇▇▆▆▆▆▆▅▅▆▅▅▄▃▃▃▃▃▃▃▃▃▂▃▃▂▂▂▂▂▂▂▁▁▁▁▁▁▁12552.012500.012409.011672.011298.011306.010265.09477.89591.69518.19526.28439.18751.69014.08594.28304.96536.35435.95327.35019.35044.95114.95123.44772.94999.54976.04669.04993.74786.64353.44395.14154.53794.33911.23960.93662.32963.92994.42876.12521.32744.62524.42540.3NANANA2003.3NANANA
us-gaap:StockholdersEquity ██▇▇▆▅▅▄▄▄▄▄▄▄▃▃▂▂▁▂▂▂▂▃▃▃▃▄▄▄▄▄▄▄▄▄▄▄▃▃▃▃▃2186.02030.01569.01497.01041.0582.0612.0472.6352.8123.2459.9400.1242.9199.7-327.7-369.1-679.8-927.1-1225.0-564.5-600.0-581.6-565.0-469.9-331.2-373.7-187.8250.7445.4385.3337.0281.5447.6457.1385.2311.699.182.7-169.0-184.0-26.1-231.9-309.6NANANA-606.2NANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-09-302009-06-302009-03-31
us-gaap:AssetsCurrent ███▇▆▆▆▅▅▄▅▃▄▄▄▃█▅▅▄▄▅▅▄▅▅▄▅▄▄▄▄▃▃▃▃▁▁▁▁▁▁▁4734.04695.04509.04281.03963.03994.03679.03042.33154.62898.43386.92516.22839.72818.82580.62278.94559.13485.53253.13016.93030.13085.33243.12862.13064.03039.32686.43061.92944.32945.82968.82782.22442.72520.32525.72205.81519.41526.61424.41360.01543.11339.61343.0NANANA1012.9NANANA
us-gaap:CashAndCashEquivalentsAtCarryingValue ▇▇▆▆▅▅▄▃▃▃▄▂▃▃▂▂█▅▅▄▄▄▄▃▄▄▃▅▄▄▅▄▄▄▄▄▂▂▂▂▂▂▁▂▁▁▁2809.02769.02597.02492.02099.02141.01832.01178.01195.91196.61685.01034.81314.51277.31071.5962.83280.92129.62051.51746.11674.31576.11757.41471.11538.61509.91219.51940.81777.31792.21919.51835.11633.01758.01755.41518.5824.1814.7760.0854.2938.5719.5659.6793.7485.9496.4473.9NANANA
us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents ██▇▇▅▅▄▂▂▂▄▁2809.02769.02597.02492.02099.02141.01832.01178.01196.01197.01685.01034.8NANA1071.5NANANA2052.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:ShortTermInvestments ▂▂▂▂▂▂▂▂▃▂▃▂▂▂▂▂▂▃▃▅▆██▇██▇▃▃▃▄▄▁▁▁▁▁▁▁▁▁▁▁88.096.099.096.0100.090.098.095.8119.5114.0132.5110.7101.2100.5111.8108.386.3132.8173.4311.8352.5490.6474.8470.2508.9485.5458.1164.8182.0177.3186.8209.617.911.617.922.715.413.314.813.311.06.712.7NANANA10.0NANANA
us-gaap:AccountsReceivableNetCurrent ███▇▇▇█▆▆▇▇▆▆▆▆▅▄▅▄▄▄▄▄▃▄▄▄▃▃▃▃▂▂▃▂▂▂▂▂▁▂▂▂1458.01497.01430.01360.01401.01413.01419.01228.41245.31301.21287.11131.81137.11207.41147.21007.3916.5953.5887.4831.4843.7852.1802.0720.5801.3842.7792.4712.2758.3737.9694.2592.0607.7637.2621.8549.6530.5589.2489.8400.5492.6503.4497.5NANANA444.9NANANA
us-gaap:OtherAssetsCurrent █▇█▇█▇▇▆▇▆▆▅▆▅▅▄▆▆▃▃▃▃▄▃▄▃▄▄▄▂▂▂▃▂▂▁▂▁▂▁▁▁▃379.0333.0383.0333.0363.0350.0330.0286.1335.8286.6282.3238.9286.9233.6250.1200.5275.4269.6140.8127.6159.6166.5179.6163.7175.6164.4172.5197.2177.0119.6114.498.8147.681.491.968.9109.868.077.649.856.767.8127.9NANANA51.8NANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-09-302009-06-302009-03-31
us-gaap:NoncurrentAssets NANA7051.0NANANA5968.0NANANA5667.0NANANA5710.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:NoncurrentAssets us-gaap:StatementGeographical country:USNANA2162.0NANANA1290.0NANANA982.0NANANA673.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:NoncurrentAssets us-gaap:StatementGeographical us-gaap:NonUsNANA4889.0NANANA4678.0NANANA4685.0NANANA5037.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:PropertyPlantAndEquipmentGross NANA1206.0NANANA1131.0NANANA1110.6NANANA1031.1NANANA921.4NANANA825.3NANANA753.8NANANA654.4NANANA621.4NANANA585.0NANANA520.1NANANA457.8NANANA
 us-gaap:PropertyPlantAndEquipmentGross us-gaap:PropertyPlantAndEquipmentByType mco:ComputerSoftwareNANA666.0NANANA619.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:PropertyPlantAndEquipmentGross us-gaap:PropertyPlantAndEquipmentByType us-gaap:FurnitureAndFixturesNANA49.0NANANA51.0NANANA52.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:PropertyPlantAndEquipmentGross us-gaap:PropertyPlantAndEquipmentByType us-gaap:LeaseholdImprovementsNANA231.0NANANA240.0NANANA242.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:PropertyPlantAndEquipmentGross us-gaap:PropertyPlantAndEquipmentByType us-gaap:MachineryAndEquipmentNANA260.0NANANA221.0NANANA242.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment ███▇▇▇▇▇▆▇▆▆▆▆▆▅▅▅▅▄▄▄▄▄▄▃▃▃▃▃▃▂▂▂▂▂▂▂▂▁▁▁▁969.0946.0928.0907.0880.0853.0839.0816.8797.0834.9790.2767.9748.2731.8706.0681.9645.7620.5595.5581.7560.5541.6518.9501.4489.4467.6451.5414.9414.9391.2375.7343.4343.4328.1314.3297.9286.6274.3258.2244.4232.7214.3200.8NANANA164.8NANANA
us-gaap:AmortizationOfIntangibleAssets ███▇▇▆▆▆▆▆▆▆▆▆▆▄▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▁▁▁▁▁▁▁▁36.035.034.031.031.028.025.724.726.226.426.324.625.125.725.518.88.68.58.78.98.77.97.87.68.08.57.96.96.37.37.07.06.97.17.68.17.17.35.95.04.84.84.34.23.94.0NANANANA
us-gaap:PropertyPlantAndEquipmentNet ▂▁▂▂▄▃▄▄▄▇▇▆▆▇▇███▇█▇▆▅▅▅▄▅▅▄▂▂▃▃▄▅▆▆▇▇▇▇▇▇282.0269.0278.0282.0298.0285.0292.0292.1300.4318.7320.4311.1312.2321.6325.1332.1329.7329.1325.9329.6323.0310.5306.4306.1304.6299.3302.3303.5298.3282.3278.7284.3287.4296.1307.1315.6317.4324.8326.8323.7325.2324.6319.3NANANA293.0NANANA
us-gaap:LongTermInvestments █▇▆▅▅▅▁▂▁▃▂▅▅▄▂▃▄▃▃▆▆▅▅▆▅▅▅▄▅83.067.066.054.046.049.010.020.65.722.318.945.848.044.322.127.034.433.332.761.059.955.155.058.945.147.348.043.444.6NA0.0NANANANANANANANANANANANANANANANANANANA
us-gaap:InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures ██▇▇▇▆▆▆▆▆▆▅▆▅▅▄▄▅▂▁▁▂▂▁▁▁▁▁▁▂▂▂▂▂▂▂▂151.0149.0135.0123.0125.0121.0117.0113.0121.4111.6104.698.3107.2100.499.183.480.786.926.318.616.230.328.725.822.223.421.620.017.339.937.535.935.140.038.340.944.2NA37.2NANANA30.8NANANA30.4NANANA
us-gaap:Goodwill ███▇▇▇▇▆▆▇▇▆▆▇▇▇▂▂▂▂▂▂▂▂▂▂▂▂▂▁▁▁▁▁▁▁▁▁▁▁▁▁▁4590.04566.04556.04282.04162.04122.03722.03610.03664.93762.53781.33661.33662.73831.53753.23722.11054.51029.61023.61040.81047.21050.9976.3990.01006.8988.01021.11000.3955.2656.6665.2630.8619.8623.8637.1646.3638.1656.3642.9451.1470.4463.3465.5NANANA349.2NANANA
us-gaap:IntangibleAssetsNetExcludingGoodwill ████▇█▇▆▇▇▇▇▇▇▇▇▂▂▂▂▂▂▂▂▂▂▂▂▂▁▁▁▁▁▁▁▁▁▁▁▁▁▁1784.01810.01824.01717.01697.01709.01498.01454.11486.01530.41566.11517.61541.41641.61631.61633.1287.1289.8296.4307.8319.2329.2299.1308.8322.6328.0345.5349.8310.5212.8221.6198.2202.0212.7226.5233.3238.0249.3253.6153.0166.8167.7168.8NANANA104.9NANANA
us-gaap:FiniteLivedIntangibleAssetsNet ▅▇█▁1784.01810.01824.01717.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:OperatingLeaseRightOfUseAsset ▁▂▃▃▄▅▆▆▇█357.0375.0393.0410.0429.0437.0456.0464.6476.8508.1NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:OtherAssetsNoncurrent █▇▇▆██▅▆▄▄▄▃▄▄▂▂▃▂▂▂▂▂▂▃▂▂▂▂▂▂▂▂▁▂▂▂▂▁▁▁▁▁▁556.0545.0515.0468.0561.0594.0389.0425.3317.5321.2274.3243.6259.0258.0159.9168.5170.6166.8112.2154.6158.2162.8160.8173.2155.8166.7145.9142.2147.4106.6112.193.989.9100.196.0104.5100.190.182.061.458.052.755.8NANANA50.7NANANA
us-gaap:EquitySecuritiesFvNi █▇█▇▆▅▁▂▂60.055.060.050.046.039.03.07.715.1NA33.3NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-09-302009-06-302009-03-31
us-gaap:AccountsPayableAndAccruedLiabilitiesCurrent ▄▄▆▄▄▃▄▃▃▃▄▃▃▃▄▃▂▂█▂▂▂▃▂▂▂▃▂▂▁▃▁▁▁▃▂▁▁▂▁▁▁▂816.0828.01039.0712.0795.0664.0773.0607.2588.7537.1695.2581.6593.6532.6750.3577.5490.4392.61444.3450.3453.8391.5566.6409.2422.1379.2557.6420.2430.8312.4538.9337.9312.8355.1555.3362.8300.1302.8452.3311.2302.1273.9414.4NANANA317.2NANANA
us-gaap:AccountsPayableCurrent ▄▄█▅▇▅█▃▁▄▆▃▅▇▄▆▅▅▆▆▇▃▅▄▃▄▄▄▄▃▃▂▃▃▃▃▄▃▃▃▂18.021.039.026.036.026.038.014.84.919.530.116.222.532.021.829.225.024.128.428.035.614.422.217.616.621.119.417.620.416.516.410.014.916.114.314.618.016.816.416.48.6NA14.3NANANA7.1NANANA
us-gaap:AccruedIncomeTaxesCurrent ▅▆▅▄█▄▄▃▄▃▄▄▄▄▄▃▃▂▂▁▂▂▁▁▂▃▂▂▂▁▃▁▁▁▃▂▂▁▂▁▁108.0156.0128.097.0199.091.073.056.475.165.471.479.985.186.779.249.853.640.316.87.921.741.511.512.023.550.416.122.133.20.447.53.62.45.956.122.918.712.623.43.012.3NA26.9NANANA20.3NANANA
us-gaap:ContractWithCustomerLiabilityCurrent ▇█▆▃▄▆▅▂▄▅▄▁▂▄▃1142.01232.01089.0918.01001.01113.01050.0855.7952.31062.3953.4771.5860.5998.7883.6NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:DividendsPayableCurrent ▁▁▂▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁█▁▁▁█▁▁▁█▁▁▁▇▁▁▁▅▁▁▁▄▁▁5.06.011.07.06.03.07.06.05.04.06.55.64.44.86.25.34.44.578.57.16.76.878.26.76.33.975.04.94.44.165.53.93.42.547.72.82.52.138.21.91.9NA27.9NANANA26.3NANANA
us-gaap:LiabilitiesCurrent ▆▇▇▅▆█▆▇▅▆▇▅▅▆▆▆▃▄█▃▂▂▃▂▂▂▃▂▂▂▂▁▁▂▂▂▂▂▂▁▁▁▁2050.02154.02222.01721.01886.02351.01912.02138.01839.92005.62098.51823.61843.91920.92063.31982.71237.21423.82428.21402.51146.41151.91218.51050.21124.81138.21199.71041.71093.41027.31141.3897.2897.11013.41164.9982.9995.21011.51134.0834.9852.0841.0933.8NANANA1236.0NANANA
us-gaap:OperatingLeaseLiabilityCurrent ▅██▄▂▁▁▂▁92.094.094.091.090.089.089.089.589.1NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:OtherAccruedLiabilitiesCurrent ▅▆▇▇█▆▅▄▄▄▅▄▃▃▄▃▄▂▂▅▄▃▃▃▃▃▂▃▄▅▃▂▁▂▁▁▁▃▂▁▂102.0118.0138.0124.0146.0119.0108.085.393.481.395.891.276.478.682.877.981.561.364.995.388.773.570.178.577.566.460.579.887.895.771.057.943.854.946.443.146.578.360.749.354.3NA52.6NANANA62.8NANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-09-302009-06-302009-03-31
us-gaap:LongTermDebt ██████▆▅▅▅▆▅▅▆▆▆▄▂▁▁6355.06340.06422.06363.06333.06303.05581.05238.05258.05228.65676.04929.65234.15417.75410.65406.64887.13861.93363.03418.1NANA3393.1NANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:LongTermDebtNoncurrent ██████▇▆▆▆▆▅▆▆▆▆▆▅▄▄▄▄▄▄▄▄▃▃▂▂▂▂▂▂▂▂▁▁▁▁▁▁▁6355.06340.06422.06363.06333.06303.05581.04736.55258.05228.65226.14484.04934.25118.05111.15107.34887.13861.93063.03118.23420.43428.63401.03124.53106.13095.12547.32536.52104.52097.52101.82098.61605.01610.21607.41611.91110.81137.41172.51200.91228.01221.11228.3NANANA746.2NANANA
us-gaap:DeferredIncomeTaxLiabilitiesNet █▆▆▄▇█▁▁422.0404.0404.0385.0414.0424.0357.0355.7NANA351.7NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent ▄▆▆▄▄▄█▇▇▆▆▆▆▆▆▇▆▇▇▆▆▇▅▅▆▆▆▂▂▃▂▄▄▅▄▄▃▄▃▁▁211.0249.0244.0214.0197.0196.0299.0264.2265.9256.5249.2252.7260.4256.0244.5268.3259.4272.5264.1256.1248.0270.0228.3230.1245.5251.1244.8166.1161.7170.1164.0212.5206.8219.1213.3194.5189.1192.6187.5129.9132.2NA132.8NANANA112.7NANANA
us-gaap:MinorityInterest ▇▇▇▇▇████▇▇▇██▇▇▇▇▇▇█████████▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁194.0195.0194.0191.0191.0217.0219.0224.7221.9201.8196.6206.0217.2220.3212.8212.3212.3202.9197.7206.6230.5230.1232.0229.7227.8227.5230.7229.6228.58.010.910.49.27.811.410.59.28.510.69.89.58.711.210.18.27.610.1NANANA
us-gaap:OtherLiabilitiesNoncurrent ▃▄▆▄▃▂▄▄▄▄▆▆▇▆█▃▃▃▃▂▂▃▃▃▃▃▃▁▁▁▁▃▂▃▂▂▂▂▂▁▁▁▁460.0473.0590.0498.0418.0403.0504.0492.5491.5486.6576.5574.9625.9554.2664.0447.3426.1434.2425.2412.9404.0422.3417.2417.3441.3444.1430.9348.0354.7355.0360.2426.4412.9421.5410.1386.2395.4405.8404.8357.6363.0362.2362.3NANANA317.8NANANA
us-gaap:OperatingLeaseLiabilityNoncurrent ▁▂▃▄▄▅▆▇▇█386.0406.0427.0439.0451.0463.0485.0495.0510.2523.5NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearTwo ▁▁█▄94.094.099.096.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearThree ▁▁█▅85.085.093.090.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFour ▁▁█▅77.077.084.081.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFive NANA76.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive NANA117.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-09-302009-06-302009-03-31
us-gaap:StockholdersEquity ██▇▇▆▅▅▄▄▄▄▄▄▄▃▃▂▂▁▂▂▂▂▃▃▃▃▄▄▄▄▄▄▄▄▄▄▄▃▃▃▃▃2186.02030.01569.01497.01041.0582.0612.0472.6352.8123.2459.9400.1242.9199.7-327.7-369.1-679.8-927.1-1225.0-564.5-600.0-581.6-565.0-469.9-331.2-373.7-187.8250.7445.4385.3337.0281.5447.6457.1385.2311.699.182.7-169.0-184.0-26.1-231.9-309.6NANANA-606.2NANANA
us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest ██▇▇▆▅▅▅▄▄▄▄▄▄▃▃▂▂▁▂▂▂▂▃▃▃▃▄▄▄▄▄▄▄▄▄▃▃▃▃▃▃▂2380.02225.01763.01688.01232.0799.0831.0697.3574.7325.0656.5606.1460.1420.0-114.9-156.8-467.5-724.2-1027.3-357.9-369.5-351.5-333.0-240.2-103.4-146.242.9480.3673.9393.3347.9291.9456.8464.9396.6322.1108.391.2-158.4-174.2-16.6-223.2-298.4NANANA-596.1NANANA
us-gaap:CommonStockValue ▁▁▁▁▁▁▁████████3.03.03.03.03.03.03.03.43.43.43.43.43.43.43.4NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:AdditionalPaidInCapitalCommonStock █▇▇▇▆▅▆▅▅▂▅▅▄▄▄▃▃▃▃▃▃▂▃▂▂▁▂▂▂▁▂▂▁▁▁▂▁▁▂▂▁▁▂784.0739.0735.0699.0651.0616.0642.0607.9574.5435.7600.9569.7538.6506.6528.6495.6465.5447.0477.2450.4457.3431.7451.3424.8396.7370.6383.9402.3385.0371.2405.8377.1358.7342.8365.1375.5367.8357.0394.5386.7369.1367.2391.5NANANA391.1NANANA
us-gaap:RetainedEarningsAccumulatedDeficit ██▇▇▇▆▆▆▅▅▅▅▅▄▄▄▄▄▃▄▄▄▃▃▃▃▃▃▃▂▂▂▂▂▂▂▂▂▁▁▁▁▁12094.011632.011011.010804.010442.010041.09656.09391.69107.78893.68594.48429.18204.67913.07465.47513.47269.67031.06688.97261.27077.86895.16709.06631.76468.46276.46044.35936.25780.75521.95302.15210.65082.14902.24713.34634.14486.34350.04176.14147.44048.83892.13736.2NANANA3329.0NANANA
us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax ▃▂▃▂▁▁▂▁▂▂▃▄▄▇▆▅▄▃▃▄▄▄▄▄▄▄▅▆▇▇▇▇▆▆▇▇▆▇▇▇███-425.0-440.0-432.0-504.0-542.0-554.0-439.0-537.3-446.1-455.5-426.3-342.0-304.8-51.9-172.2-257.8-309.7-357.3-364.9-305.7-316.8-301.5-339.5-320.3-280.8-322.4-235.2-133.6-47.3-61.3-54.6-100.2-149.9-138.8-82.1-85.8-120.8-78.7-107.5-70.51.5-9.4-33.4NANANA-41.2NANANA
 us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax us-gaap:DerivativeInstrumentRisk,us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship us-gaap:CurrencySwap,us-gaap:CashFlowHedgingNA2.02.02.02.02.02.02.52.6NA2.5NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax us-gaap:DerivativeInstrumentRisk,us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship us-gaap:CurrencySwap,us-gaap:NetInvestmentHedgingNA-52.0-124.0-40.058.0107.041.087.47.8NA12.3NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax us-gaap:DerivativeInstrumentRisk,us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship us-gaap:ForeignExchangeForward,us-gaap:NetInvestmentHedgingNA27.012.027.026.026.026.027.623.5NA23.5NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax us-gaap:DerivativeInstrumentRisk,us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship us-gaap:InterestRateContract,us-gaap:CashFlowHedgingNA-50.0-51.0-51.0-51.0-37.0-2.0-2.3-2.4NA-2.4NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax us-gaap:DerivativeInstrumentRisk,us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship us-gaap:LongTermDebt,us-gaap:NetInvestmentHedgingNA-63.0-108.0-60.0-14.010.0-13.011.4-6.8NA-3.1NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax us-gaap:DerivativeInstrumentRisk,us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship,us-gaap:HedgingDesignation us-gaap:CurrencySwap,us-gaap:NetInvestmentHedging,us-gaap:DesignatedAsHedgingInstrument-70.0NA-124.0NANANA41.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax us-gaap:DerivativeInstrumentRisk,us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship,us-gaap:HedgingDesignation us-gaap:ForeignExchangeForward,us-gaap:NetInvestmentHedging,us-gaap:DesignatedAsHedgingInstrument27.0NA12.0NANANA26.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax us-gaap:DerivativeInstrumentRisk,us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship,us-gaap:HedgingDesignation us-gaap:InterestRateContract,us-gaap:CashFlowHedging,us-gaap:DesignatedAsHedgingInstrument-50.0NA-51.0NANANA-2.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax us-gaap:DerivativeInstrumentRisk,us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship,us-gaap:HedgingDesignation us-gaap:LongTermDebt,us-gaap:NetInvestmentHedging,us-gaap:DesignatedAsHedgingInstrument-73.0NA-108.0NANANA-13.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship us-gaap:CashFlowHedgingNA-48.0-49.0-49.0-49.0-35.00.00.20.20.10.12.12.22.30.91.10.5NA1.7NANANA-1.1NANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship us-gaap:NetInvestmentHedgingNA-88.0-220.0-73.070.0143.054.0126.424.553.732.7NA15.2-12.2-1.3NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship,us-gaap:HedgingDesignation us-gaap:CashFlowHedging,us-gaap:DesignatedAsHedgingInstrument-48.0NA-49.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship,us-gaap:HedgingDesignation us-gaap:NetInvestmentHedging,us-gaap:DesignatedAsHedgingInstrument-116.0NA-220.0NANANA54.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax us-gaap:HedgingDesignation us-gaap:DesignatedAsHedgingInstrument▃▃▁▄▆█▇█▆-164.0-136.0-269.0-122.021.0108.054.0126.624.7NA32.8NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:TreasuryStockValue ███████▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▁▆▁▁▆▆▆▆▆▆▆▆▆▆▆▆▆▆10270.09904.09748.09505.09513.09524.09250.08993.08886.78754.08312.58260.18198.98171.48152.98123.78108.68051.28029.67973.87821.77610.37389.27209.56918.9-6701.76384.2-5957.6-5676.45449.95319.75209.44846.74652.54614.54615.64637.64549.04635.54651.04448.94485.24407.3NANANA4288.5NANANA
us-gaap:MinorityInterest ▇▇▇▇▇████▇▇▇██▇▇▇▇▇▇█████████▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁194.0195.0194.0191.0191.0217.0219.0224.7221.9201.8196.6206.0217.2220.3212.8212.3212.3202.9197.7206.6230.5230.1232.0229.7227.8227.5230.7229.6228.58.010.910.49.27.811.410.59.28.510.69.89.58.711.210.18.27.610.1NANANA
us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue ▆██▅▃▄▂▂▃▄▁▁▃▃41.045.044.038.035.037.032.533.434.335.830.530.734.335.2NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-09-302009-06-302009-03-31
us-gaap:NetCashProvidedByUsedInOperatingActivities ███▇█▆▇▇▆▆▆▆▆▆▆▆▇▁▆▆▆▅▆▆▆▆▆▆▆▅▆▆▅▅▆▆▅▄▅▅▅▅▅▅▅▅594.0676.0658.0511.0632.0345.0479.5441.0387.4367.1376.5307.3385.8391.5404.8390.4464.7-512.4369.5327.8291.5237.3260.1299.1332.6261.8308.8251.8280.8177.2273.3284.4166.5202.6327.1260.5173.562.0137.0220.4245.0200.9178.6170.7139.9164.1NANANANA
us-gaap:NetCashProvidedByUsedInInvestingActivities █▇▇██▆█▇██▇████▁█████▇████▇▇█▇█▇██████▇███▇███-57.0-194.0-224.0-30.0-51.0-772.0185.5-96.7-45.6-7.2-292.6-68.5-26.8-18.5-12.6-3447.321.318.6104.44.9101.1-108.4-10.510.3-42.5-49.3-320.3-131.2-31.2-82.2-39.1-203.8-16.2-2.8-4.1-20.2-12.3-13.6-202.3-24.9-27.1-13.3-173.8-21.7-19.7-13.6NANANANA
us-gaap:NetCashProvidedByUsedInFinancingActivities ▃▃▃▄▂█▄▃▃▁▇▂▃▄▃█▇▇▄▄▃▃▅▃▃▅▂▅▃▄▄▅▄▄▄▇▄▅▅▄▅▄▄▅▄▄-502.0-290.0-354.0-120.0-642.0765.0-46.0-331.0-337.2-848.8568.7-512.6-285.3-182.3-289.5719.1623.9553.7-127.2-259.8-283.6-339.251.5-354.9-281.5123.9-671.1107.8-279.1-222.1-155.683.0-270.2-156.0-91.8436.9-135.5-7.0-25.3-239.3-8.0-145.1-136.6119.1-111.9-111.9NANANANA
us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect ▄▅▅▆▄▆█▄▄▁█40.0172.0105.0393.0-42.0309.0654.0-18.0-1.0-488.0649.7NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-09-302009-06-302009-03-31
us-gaap:DeferredIncomeTaxExpenseBenefit ▅▅▃▃▄▅▄▄▄▅▄▃▄▄▃▄▄█▁▄▄▄▄▄▄▄▄▄▅▅▄▄▄▅▄▄▄▅▄▄15.044.0-43.0-47.0-11.057.0-15.8-19.2-16.813.8-23.6-63.2-7.9-4.2-73.1-32.18.5185.0-160.2-6.62.411.3-1.69.13.07.6-13.8-2.518.327.9-14.2-23.8-2.313.16.3-17.7-0.748.2-2.57.0NANANANANANANANANANA
us-gaap:IncreaseDecreaseInAccountsReceivable ▃▆▅▂▃▄█▄▃▄█▄▃▅▇▄▃▅▆▄▄▅▆▂▃▅▆▃▄▅▆▃▃▄▆▄▂▆▁▆▃▄▄▆▃▃-42.071.042.0-62.0-18.07.0169.9-5.5-38.98.5158.6-4.7-47.729.9138.3-6.7-45.461.969.2-9.6-0.345.586.4-72.8-50.962.786.4-33.93.042.893.8-24.4-27.425.071.216.5-55.596.0-114.6108.7-13.22.023.376.9-32.3-13.5NANANANA
us-gaap:NetCashProvidedByUsedInOperatingActivities ███▇█▆▇▇▆▆▆▆▆▆▆▆▇▁▆▆▆▅▆▆▆▆▆▆▆▅▆▆▅▅▆▆▅▄▅▅▅▅▅▅▅▅594.0676.0658.0511.0632.0345.0479.5441.0387.4367.1376.5307.3385.8391.5404.8390.4464.7-512.4369.5327.8291.5237.3260.1299.1332.6261.8308.8251.8280.8177.2273.3284.4166.5202.6327.1260.5173.562.0137.0220.4245.0200.9178.6170.7139.9164.1NANANANA
us-gaap:NetIncomeLoss ▇█▅▆▇▇▆▆▅▆▅▅▆▆▄▅▅▆▁▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▄▄▅▅▄▄▄▄▄▄▄▄577.0736.0314.0467.0509.0488.0359.0379.4310.3372.9250.3310.2376.2372.925.5317.3312.2345.6-428.6255.3255.5184.4217.9231.6261.7230.1236.3215.2319.2218.0206.7183.9225.5188.4160.1183.9172.5173.596.2130.7189.0155.5137.4136.0121.0113.4101.9100.6109.390.2
us-gaap:ProfitLoss ▇█▅▆▇▆▆▆▅▆▅▅▆▆▄▅▅▆▁▅▅▅▅▅▅▅▅▅▆▅▅▅▅▅▅▅▅▅▄▄▅▅▄▄▄▄577.0736.0314.0467.0509.0487.0361.0382.4312.0373.6252.7312.0377.9376.828.5319.7313.6345.9-425.5256.6258.1186.6220.4233.8264.1231.3241.4218.5324.4221.7209.6186.8228.4191.1162.0186.5175.7175.598.1132.1190.7157.1138.9137.2122.6114.7NANANANA
us-gaap:ShareBasedCompensation ▇██▆▆▆▅▅▆▆▅▅▆▆▆▅▄▄▄▃▃▄▃▃▃▃▃▂▃▃▂▂▂▂▂▂▁▁▁▁▁▂▂▁▁▁41.045.044.038.035.037.032.833.334.235.730.330.534.435.134.031.828.728.425.323.923.525.420.722.121.722.720.519.320.320.317.816.016.117.218.216.414.915.013.512.914.316.015.313.612.914.8NANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-09-302009-06-302009-03-31
us-gaap:NetCashProvidedByUsedInInvestingActivities █▇▇██▆█▇██▇████▁█████▇████▇▇█▇█▇██████▇███▇███-57.0-194.0-224.0-30.0-51.0-772.0185.5-96.7-45.6-7.2-292.6-68.5-26.8-18.5-12.6-3447.321.318.6104.44.9101.1-108.4-10.510.3-42.5-49.3-320.3-131.2-31.2-82.2-39.1-203.8-16.2-2.8-4.1-20.2-12.3-13.6-202.3-24.9-27.1-13.3-173.8-21.7-19.7-13.6NANANANA
us-gaap:PaymentsToAcquirePropertyPlantAndEquipment ▆▃▄▄█▄▁▄▃▄▅▅▄▃▄▅▅▃▆▆▅▅▄▅▄▄▃▃▄▄▂▂▂▁▂▂▁▃▃▃▃▄▅▄▄▃30.014.020.021.041.021.08.122.218.720.027.525.022.915.021.226.624.118.730.430.528.026.323.125.221.719.017.818.019.719.111.312.99.58.69.813.36.615.314.118.016.019.624.419.319.116.2NANANANA
us-gaap:PaymentsToAcquireInvestments ▄▆▅▁▂█▂▃▂▃▅▅44.065.051.022.030.078.027.440.731.938.050.550.3NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-09-302009-06-302009-03-31
us-gaap:NetCashProvidedByUsedInFinancingActivities ▃▃▃▄▂█▄▃▃▁▇▂▃▄▃█▇▇▄▄▃▃▅▃▃▅▂▅▃▄▄▅▄▄▄▇▄▅▅▄▅▄▄▅▄▄-502.0-290.0-354.0-120.0-642.0765.0-46.0-331.0-337.2-848.8568.7-512.6-285.3-182.3-289.5719.1623.9553.7-127.2-259.8-283.6-339.251.5-354.9-281.5123.9-671.1107.8-279.1-222.1-155.683.0-270.2-156.0-91.8436.9-135.5-7.0-25.3-239.3-8.0-145.1-136.6119.1-111.9-111.9NANANANA
us-gaap:PaymentsOfDividendsCommonStock ██▄▄▄▄▁▁▁▁116.0116.0105.0105.0105.0105.094.095.095.094.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:Dividends ▂▂▂▂▂▁▁▁▁▁█▁▁▁115.0116.0109.0106.0108.0101.096.795.896.893.7339.488.384.685.1NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:PaymentsForRepurchaseOfCommonStock ▄▃▃▂▂▃▃▃▃▄▃▃▂▃▂▂▃▃▃▃▃▃▃▃▃▄▄▃▃▃█▁▁▂▃▂▃▂▂▃▂▃▃▂▃▂371.0132.0250.00.00.0253.0263.0112.8167.0448.255.466.237.643.436.129.179.555.059.9193.0223.8262.1192.5304.9234.9365.8440.3320.5258.1201.61640.7-397.2-259.1-91.371.425.1100.00.00.0206.20.0127.6104.019.770.029.9NANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-09-302009-06-302009-03-31

Common Stock Value

us-gaap:CommonStockValue

us-gaap:CommonStockValue


Common
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value3000000.03000000.03000000.03000000.03000000.03000000.03000000.03400000.03400000.03400000.03400000.03400000.03400000.03400000.03400000.0
Percentage of CommonStockValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Shares Issued

us-gaap:SharesIssued us-gaap:StatementEquityComponents

us-gaap:SharesIssued

us-gaap:CommonStock


Shares
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-312008-12-312007-12-31
Value3423423423423423423423423423423423423423423.4342342342342342342342342342342
Percentage of SharesIssued100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:TreasuryStock


Shares
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-312008-12-312007-12-31
Value156155155155155155155154-153.7-153.3-151.6151-151.0-151.0-151.9-152.2-146.8-138.5-128.9-119.7-120.5-112.1-106.0-107.8-91.5
Percentage of SharesIssued45.745.445.445.245.345.345.345.0-44.8-44.7-44.244.1-44.0-44.0-4467.6-44.4-42.8-40.4-37.6-34.9-35.1-32.7-30.9-31.4-26.7

Weighted Average Number Of Diluted Shares Outstanding

us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding

us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding


Weighted
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-31
Value187188189189189191191192194194194194193194194195197202204206214215218222226227226227227229231231235236239
Percentage of WeightedAverageNumberOfDilutedSharesOutstanding100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Weighted Average Number Of Shares Outstanding Basic

us-gaap:WeightedAverageNumberOfSharesOutstandingBasic

us-gaap:WeightedAverageNumberOfSharesOutstandingBasic


Weighted
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-31
Value186187187187187189189190191191191191191191191193195199201202210212214217222223222223223226228228234235236
Percentage of WeightedAverageNumberOfSharesOutstandingBasic100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount

us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount

us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount


Antidilutive
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-31
Value0.20.30.30.30.30.20.30.40.30.50.70.50.71.00.51.21.50.60.81.00.50.71.02.64.44.96.67.27.0109.413161616
Percentage of AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Earnings Per Share Basic

us-gaap:EarningsPerShareBasic

us-gaap:EarningsPerShareBasic


Earnings
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-09-302009-06-302009-03-31
Value3.093.931.682.492.712.61.912.011.641.961.311.621.961.950.131.661.631.81-2.251.331.320.951.111.161.31.141.141.021.511.020.960.841.010.840.720.830.770.780.430.580.830.680.590.580.510.480.430.430.460.38
Percentage of EarningsPerShareBasic100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Earnings Per Share Diluted

us-gaap:EarningsPerShareDiluted

us-gaap:EarningsPerShareDiluted


Earnings
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-09-302009-06-302009-03-31
Value3.073.91.662.472.692.571.881.991.621.931.291.591.941.920.131.631.611.78-2.251.311.30.931.091.141.281.111.121.01.481.00.940.831.00.830.70.810.760.760.430.570.820.670.580.580.510.470.430.420.460.38
Percentage of EarningsPerShareDiluted100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Comprehensive Income Net Of Tax

us-gaap:ComprehensiveIncomeNetOfTax

us-gaap:ComprehensiveIncomeNetOfTax


Comprehensive
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value592728386505520373457288319363166272123495111368359353-487.92662402221981923031421341283332112522332141311632191302025958199179
Percentage of ComprehensiveIncomeNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax38.145.50.037.236.228.937.123.226.331.815.725.210.544.09.634.736.036.2-51.829.125.927.322.923.033.016.515.415.838.127.532.433.128.418.021.731.820.331.310.411.033.031.1

Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest

us-gaap:ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest

us-gaap:ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest


Comprehensive
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value-1.02.04.01.0-11.0-2.0-3.73.13.48.2-9.1-8.4-3.28.9-0.23.1105.7-8.0-14.82.62.22.52.22.41.25.13.35.23.72.92.92.92.71.92.52.34.00.40.32.12.0
Percentage of ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.10.10.00.1-0.8-0.2-0.30.20.30.7-0.9-0.8-0.30.8-0.00.31.10.6-0.8-1.60.30.30.30.30.30.10.60.40.60.50.40.40.40.40.30.40.40.60.10.10.30.3

Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest

us-gaap:ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest

us-gaap:ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest


Comprehensive
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value591730390506509371453291323371157264120504111371370358-495.9251242224201194305144139132338215255236217134165221132206595920218113019612470
Percentage of ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax38.145.60.037.335.528.836.823.526.632.614.824.510.244.89.635.037.036.8-52.627.426.127.523.223.333.316.615.916.238.728.032.833.528.718.422.032.220.731.910.511.133.431.523.138.326.014.8

Cost Of Revenue

us-gaap:CostOfRevenue

us-gaap:CostOfRevenue


Cost
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value365393409364362340355350340342
Percentage of CostOfRevenue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax23.524.60.026.825.226.428.828.228.029.9

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

us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, mco:AccumulatedDefinedBenefitPlansAdjustmentNetGainLossAndPriorServiceCostsPortionAttributableToParent


Cost
Period End2020-09-302020-06-302020-03-312019-09-302019-06-302019-03-31
Value-1.0-1.0-1.0-1.00.0-1.0
Percentage of CostOfRevenue-0.3-0.3-0.3-0.30.0-0.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.1-0.1-0.1-0.10.0-0.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome mco:AccumulatedDefinedBenefitPlansAdjustmentNetGainLossAndPriorServiceCostsPortionAttributableToParent0.00.00.00.00.00.0

Costs And Expenses

us-gaap:CostsAndExpenses

us-gaap:CostsAndExpenses


Costs
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value752747846714725698729691731680
Percentage of CostsAndExpenses100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax48.446.70.052.750.554.159.155.760.259.5

us-gaap:CostsAndExpenses us-gaap:ConsolidationItems

us-gaap:IntersegmentElimination


Costs
Period End2021-06-302021-03-312020-06-302020-03-31
Value-44.0-42.0-37.0-39.0
Percentage of CostsAndExpenses-5.9-5.6-5.1-5.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-2.8-2.6-2.6-3.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:IntersegmentElimination100.0100.0100.0100.0

us-gaap:CostsAndExpenses us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, mco:MoodysAnalytics


Costs
Period End2021-06-302021-03-312020-06-302020-03-31
Value434423393394
Percentage of CostsAndExpenses57.756.654.256.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax27.926.427.430.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments mco:MoodysAnalytics75.574.778.879.1

us-gaap:OperatingSegments, mco:MoodysInvestorsService


Costs
Period End2021-06-302021-03-312020-06-302020-03-31
Value362366369343
Percentage of CostsAndExpenses48.149.050.949.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax23.322.925.726.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments mco:MoodysInvestorsService35.434.037.941.3

Gains Losses On Extinguishment Of Debt

us-gaap:GainsLossesOnExtinguishmentOfDebt

us-gaap:GainsLossesOnExtinguishmentOfDebt


Gains
Period End2020-12-31
Value0
Percentage of GainsLossesOnExtinguishmentOfDebt0.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.0

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

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest


Income
Period End2021-06-302020-06-30
Value758666
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax48.846.4

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:StatementEquityComponents

us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:AccumulatedDefinedBenefitPlansAdjustment


Income
Period End2021-06-302020-06-30
Value-10.0-1.0
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest-1.3-0.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.6-0.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome us-gaap:AccumulatedDefinedBenefitPlansAdjustment0.00.0

Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments


Income
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value862400599666564452512433411321412495441407465462451-465.5369378275312343379344335328485311301263336267236264264258155184264235172181177182
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax53.90.044.246.443.736.741.335.736.030.338.242.239.135.043.846.246.3-49.440.240.833.836.141.241.339.838.340.255.540.638.737.344.636.531.338.441.340.027.434.843.740.830.635.337.238.3

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:StatementEquityComponents

us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:AccumulatedDefinedBenefitPlansAdjustment


Income
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value-3.0-2.0-1.0-2.00.0-1.0-1.0-1.0
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments-0.8-0.3-0.2-0.40.0-0.2-0.2-0.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.0-0.1-0.1-0.20.0-0.1-0.1-0.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome us-gaap:AccumulatedDefinedBenefitPlansAdjustment0.00.00.00.00.00.00.00.0

Income Tax Expense Benefit

us-gaap:IncomeTaxExpenseBenefit

us-gaap:IncomeTaxExpenseBenefit


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value181126861321577791130121376810011764379146148105-40.011212089911091151139410916089927610876747788835752737833445567
Percentage of IncomeTaxExpenseBenefit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax11.77.90.09.710.96.07.410.510.03.36.59.310.05.732.513.714.810.8-4.212.313.010.910.613.212.513.110.813.518.411.711.810.914.310.49.911.313.912.810.19.912.113.56.08.611.614.2

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

us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, mco:AccumulatedNetInvestmentHedgesGainLossAttributabletoParent


Income
Period End2021-06-302019-12-312019-09-30
Value1.00.80.2
Percentage of IncomeTaxExpenseBenefit0.60.90.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.10.10.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome mco:AccumulatedNetInvestmentHedgesGainLossAttributabletoParent0.00.00.0

us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:AccumulatedDefinedBenefitPlansAdjustment


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value-2.0-1.0-1.00.00.0-1.00.00.00.0-1.0
Percentage of IncomeTaxExpenseBenefit-1.1-0.8-1.20.00.0-1.30.00.00.0-2.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.1-0.10.00.00.0-0.10.00.00.0-0.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome us-gaap:AccumulatedDefinedBenefitPlansAdjustment0.00.00.00.00.00.00.00.00.00.0

Income Taxes Paid

us-gaap:IncomeTaxesPaid

us-gaap:IncomeTaxesPaid


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-30
Value259681402638229155104161361059919344171110602311291129229710815931341171407668351537721361201142451
Percentage of IncomeTaxesPaid100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax16.74.20.019.45.72.212.68.413.33.29.99.216.43.914.710.46.02.412.09.914.02.711.313.017.43.64.014.416.19.98.85.120.310.62.85.418.917.64.39.6

Interest Income Expense Nonoperating Net

us-gaap:InterestIncomeExpenseNonoperatingNet

us-gaap:InterestIncomeExpenseNonoperatingNet


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-30
Value-49000000.0-7000000.0-52000000.0-53000000.0-60000000.0-40000000.0-59000000.0-45900000.0-50600000.0-52500000.0-55500000.0-56400000.0-53400000.0-50700000.0-52900000.0-48100000.0-45000000.0-42400000.0-34000000.0-35400000.0-34300000.0-34100000.0-28100000.0-25800000.0-31900000.0-29300000.0-29300000.0-37700000.0-26000000.0
Percentage of InterestIncomeExpenseNonoperatingNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-3.2-0.40.0-3.9-4.2-3.1-4.8-3.7-4.2-4.6-5.2-5.2-4.5-4.5-4.5-4.5-4.5-4.3-3.6-3.9-3.7-4.2-3.2-3.1-3.5-3.4-3.3-4.6-3.0

Interest Paid Net

us-gaap:InterestPaidNet

us-gaap:InterestPaidNet


Interest
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-31
Value1373472349502573
Percentage of InterestPaidNet100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.84.63.51.63.84.12.16.4

Net Income Loss

us-gaap:NetIncomeLoss

us-gaap:NetIncomeLoss


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-09-302009-06-302009-03-31
Value57773631446750948835937931037225031037637225317312345-428.62552551842172312612302362153192182061832251881601831721739613018915513713612111310110010990
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax37.246.00.034.435.537.829.130.625.632.723.628.732.033.12.229.931.235.4-45.527.827.522.625.227.728.526.626.926.436.528.426.526.129.825.721.226.726.926.817.024.631.226.924.326.525.323.821.022.324.322.1

us-gaap:NetIncomeLoss us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome

us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome


Net
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-30
Value-8.0-2.0-2.0-1.0-2.00.0-1.0
Percentage of NetIncomeLoss-1.4-0.3-0.4-0.2-0.40.0-0.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.5-0.1-0.1-0.1-0.20.0-0.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome0.00.00.00.00.00.00.0

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

us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, mco:AccumulatedNetInvestmentHedgesGainLossAttributabletoParent


Net
Period End2021-06-302021-03-312019-09-30
Value0.01.01.0
Percentage of NetIncomeLoss0.00.10.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.00.10.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome mco:AccumulatedNetInvestmentHedgesGainLossAttributabletoParent0.00.00.0

us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:AccumulatedDefinedBenefitPlansAdjustment


Net
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-30
Value-8.0-2.0-2.0-1.0-1.0-1.0-1.0
Percentage of NetIncomeLoss-1.4-0.3-0.4-0.2-0.2-0.3-0.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.5-0.1-0.1-0.1-0.1-0.1-0.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome us-gaap:AccumulatedDefinedBenefitPlansAdjustment0.00.00.00.00.00.00.0

us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:AccumulatedGainLossNetCashFlowHedgeParent


Net
Period End2021-06-302021-03-312020-09-302020-06-302020-03-31
Value0.0-1.00.00.0-1.0
Percentage of NetIncomeLoss0.0-0.10.00.0-0.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.0-0.10.00.0-0.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome us-gaap:AccumulatedGainLossNetCashFlowHedgeParent0.00.00.00.00.0

us-gaap:NetIncomeLoss us-gaap:StatementEquityComponents

us-gaap:Parent


Net
Period End2021-06-30
Value577
Percentage of NetIncomeLoss100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax37.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:Parent0.0

us-gaap:RetainedEarnings


Net
Period End2021-06-30
Value577
Percentage of NetIncomeLoss100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax37.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:RetainedEarnings0.0

Net Income Loss Attributable To Noncontrolling Interest

us-gaap:NetIncomeLossAttributableToNoncontrollingInterest

us-gaap:NetIncomeLossAttributableToNoncontrollingInterest


Net
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value0.00.00.0-1.01.63.01.70.72.41.81.73.93.02.41.40.33.11.32.62.22.52.22.41.25.13.35.23.72.92.92.92.71.92.63.22.01.91.41.71.61.51.21.61.3
Percentage of NetIncomeLossAttributableToNoncontrollingInterest0.00.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.00.00.0-0.10.10.20.10.10.20.20.10.30.30.20.10.00.30.10.30.30.30.30.30.10.60.40.60.50.40.40.40.40.30.40.50.30.30.30.30.30.30.20.30.3

Nonoperating Income Expense

us-gaap:NonoperatingIncomeExpense

us-gaap:NonoperatingIncomeExpense


Nonoperating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value-43.09.0-44.0-43.0-44.0-28.0-51.6-36.0-50.2-50.2-55.0-54.0-38.5-49.7-55.1204.57.97.6-28.5-31.3-28.5-20.8-6.1-40.1-26.8-8.9-21.373-21.4-10.1-28.0-14.0-13.2-23.8-5.3-13.9-10.4-16.5-11.3-5.9-14.9-24.0-7.5-12.6-14.3
Percentage of NonoperatingIncomeExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-2.80.60.0-3.2-3.1-2.2-4.2-2.9-4.1-4.4-5.2-5.0-3.3-4.4-4.71.90.40.80.8-3.1-3.4-3.5-2.4-0.7-4.4-3.1-1.0-2.68.4-2.8-1.3-4.0-1.9-1.8-3.2-0.8-2.2-1.6-2.9-2.1-1.0-2.6-4.3-1.5-2.6-3.0

Operating Expenses

us-gaap:OperatingExpenses

us-gaap:OperatingExpenses


Operating
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value7147256987286917306806836146416357026175435311415519518512532485498494532466461434467414405451494418362377395335335327367324287279
Percentage of OperatingExpenses100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax52.750.554.159.155.860.259.664.556.854.656.460.358.154.354.5150.256.755.862.761.558.154.357.160.757.152.956.660.058.753.661.765.560.856.558.469.763.155.456.765.263.260.158.7

us-gaap:OperatingExpenses us-gaap:ConsolidationItems

us-gaap:IntersegmentElimination


Operating
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value-39.0-37.0-39.0-36.7-36.4-36.0-34.0-34.0-34.2
Percentage of OperatingExpenses-5.5-5.1-5.6-5.0-5.3-4.9-5.0-5.0-5.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-2.9-2.6-3.0-3.0-2.9-3.0-3.0-3.2-3.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:IntersegmentElimination100.0100.0100.00.0100.0102.398.00.0100.0

us-gaap:OperatingExpenses us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, mco:MoodysAnalytics


Operating
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value414393394417388415378393344
Percentage of OperatingExpenses58.054.256.457.356.156.855.657.556.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax30.527.430.533.931.334.233.137.131.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments mco:MoodysAnalytics77.878.879.10.078.386.979.70.078.6

us-gaap:OperatingSegments, mco:MoodysInvestorsService


Operating
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value339369343348339352336325303
Percentage of OperatingExpenses47.550.949.147.849.148.249.447.549.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax25.025.726.628.227.429.029.430.728.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments mco:MoodysInvestorsService39.337.941.30.043.545.647.80.044.9

Operating Income Loss

us-gaap:OperatingIncomeLoss

us-gaap:OperatingIncomeLoss


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-09-302009-06-302009-03-31
Value801853444642710592504548483461376466534490462445457443-473.1397410304333349419371344349411333311291350280260269278269172196270250196188190196178172187148
Percentage of OperatingIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax51.653.30.047.349.545.940.944.239.840.435.543.245.443.639.741.945.745.5-50.243.344.237.338.541.945.742.939.342.947.143.440.041.346.438.334.539.243.541.630.336.944.643.334.836.839.941.336.838.241.536.4

us-gaap:OperatingIncomeLoss us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, mco:MoodysAnalytics


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value14114396118106104971076395749371687561
Percentage of OperatingIncomeLoss17.616.821.618.414.917.619.419.613.220.719.720.113.413.916.313.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax9.18.90.08.77.48.17.98.75.28.47.08.76.16.16.55.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments mco:MoodysAnalytics24.525.30.022.221.220.90.021.713.320.20.021.416.816.60.016.4

us-gaap:OperatingSegments, mco:MoodysInvestorsService


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value660710348524604488406441419365302372462422390387
Percentage of OperatingIncomeLoss82.483.278.481.685.182.480.680.486.879.380.379.986.686.184.387.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax42.544.40.038.642.137.832.935.634.632.028.534.539.437.533.536.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments mco:MoodysInvestorsService64.666.00.060.762.158.70.056.554.452.10.055.159.156.40.053.6

Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax

us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax

us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-06-302018-06-30
Value01000000.000-14000000.0-35000000.0100000.0-100000.0
Percentage of OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax0.0100.00.00.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.00.10.00.0-1.0-2.70.0-0.0

us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax us-gaap:StatementEquityComponents

us-gaap:AccumulatedOtherComprehensiveIncome


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-31
Value01000000.000-14000000.0-35000000.0
Percentage of OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax0.0100.00.00.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.00.10.00.0-1.0-2.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:AccumulatedOtherComprehensiveIncome0.00.00.00.00.00.0

us-gaap:Parent


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-31
Value01000000.000-14000000.0-35000000.0
Percentage of OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax0.0100.00.00.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.00.10.00.0-1.0-2.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:Parent0.00.00.00.00.00.0

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

us-gaap:OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax

us-gaap:OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312012-12-312012-09-302012-06-302011-12-312011-09-302011-06-30
Value6.0-9.0105446.0-81.0-64.0102-29.223-301.64.127-10.9-60.09.2-19.436-25.1-41.732-90.61132-37.9-10.5-74.413
Percentage of OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.4-0.60.03.20.4-6.3-5.28.3-2.42.1-28.50.42.3-1.0-6.41.0-2.14.4-2.9-5.03.5-10.51.64.8-5.9-1.9-14.02.2

us-gaap:OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax us-gaap:StatementEquityComponents

us-gaap:AccumulatedOtherComprehensiveIncome


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value7.0-11.01014318-80.0121-92.010.0-10.0
Percentage of OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax116.7122.296.297.7300.098.8-189.1-89.6-34.2-42.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.5-0.70.03.21.3-6.29.8-7.40.8-0.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:AccumulatedOtherComprehensiveIncome0.00.00.00.00.00.00.00.00.00.0

us-gaap:NoncontrollingInterest


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value-1.02.04.01.0-12.0-1.0-6.00.03.07.0
Percentage of OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax-16.7-22.23.82.3-200.01.29.40.0-10.329.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.10.10.00.1-0.8-0.1-0.50.00.20.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:NoncontrollingInterest0.00.00.00.00.00.00.00.00.00.0

us-gaap:Parent


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value7.0-11.01014318-80.0121-92.04021-86.6-37.9-254.71207650416.9
Percentage of OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax116.7122.296.297.7300.098.8-189.1-89.6-137.089.428.7-924.4-929.6-1102.80.00.00.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.5-0.70.03.21.3-6.29.8-7.43.31.8-8.2-3.5-21.710.76.64.84.10.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:Parent0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Other Comprehensive Income Loss Net Of Tax

us-gaap:OtherComprehensiveIncomeLossNetOfTax

us-gaap:OtherComprehensiveIncomeLossNetOfTax


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-31
Value14-6.076390.0-116.092-91.111-1.8-95.7-47.6-257.712783525713-70.4-4.9-15.338-19.2-39.541-87.2-101.6-86.314-6.74549-11.1-56.73.635-43.030
Percentage of OtherComprehensiveIncomeLossNetOfTax100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.9-0.40.02.90.0-9.07.5-7.30.9-0.2-9.0-4.4-21.911.37.14.95.71.3-7.5-0.5-1.64.7-2.2-4.74.5-10.1-11.6-10.61.6-0.95.97.0-1.5-7.70.55.1-6.74.8

Other Nonoperating Income Expense

us-gaap:OtherNonoperatingIncomeExpense

us-gaap:OtherNonoperatingIncomeExpense


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value6.0168.010.016127.49.90.42.30.52.4141.0-2.2-1.48.3-9.4416.93.05.67.319-8.22.52016-3.32.413-3.67.78.8-2.210.02.7-0.10.41.68.23.3-6.65.3-3.6-1.0
Percentage of OtherNonoperatingIncomeExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.41.00.00.71.10.90.60.80.00.20.00.21.30.1-0.2-0.10.8-1.04.40.80.30.70.82.4-0.90.32.32.0-0.40.31.7-0.51.01.2-0.31.50.4-0.00.10.31.40.6-1.21.0-0.8-0.2

us-gaap:OtherNonoperatingIncomeExpense us-gaap:DerivativeInstrumentRisk, us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:StatementEquityComponents

us-gaap:ForeignExchangeForward, us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, mco:AccumulatedNetInvestmentHedgesGainLossAttributabletoParent


Other
Period End2021-06-302021-03-312019-12-312019-09-30
Value1.01.02.01.0
Percentage of OtherNonoperatingIncomeExpense16.76.227.010.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.10.10.20.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ForeignExchangeForward us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome mco:AccumulatedNetInvestmentHedgesGainLossAttributabletoParent0.00.00.00.0

us-gaap:InterestRateContract, us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:AccumulatedGainLossNetCashFlowHedgeParent


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-03-31
Value0.0-1.0-2.00.00.0-1.00.0
Percentage of OtherNonoperatingIncomeExpense0.0-6.2-25.00.00.0-8.30.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.0-0.10.00.00.0-0.10.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:InterestRateContract us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome us-gaap:AccumulatedGainLossNetCashFlowHedgeParent0.00.00.00.00.00.00.0

us-gaap:OtherNonoperatingIncomeExpense us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:StatementEquityComponents

us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, mco:AccumulatedDefinedBenefitPlansAdjustmentNetGainLossAndPriorServiceCostsPortionAttributableToParent


Other
Period End2021-06-302021-03-312020-06-302020-03-31
Value-3.0-3.0-1.0-2.0
Percentage of OtherNonoperatingIncomeExpense-50.0-18.8-6.2-16.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.2-0.2-0.1-0.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome mco:AccumulatedDefinedBenefitPlansAdjustmentNetGainLossAndPriorServiceCostsPortionAttributableToParent0.00.00.00.0

us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, mco:AccumulatedDefinedBenefitPlansAdjustmentSettlementGainLossPortionAttributableToParent


Other
Period End2021-06-30
Value-7.0
Percentage of OtherNonoperatingIncomeExpense-116.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome mco:AccumulatedDefinedBenefitPlansAdjustmentSettlementGainLossPortionAttributableToParent0.0

Profit Loss

us-gaap:ProfitLoss

us-gaap:ProfitLoss


Profit
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value57773631446750948736138231237325231237737628319313345-425.525625818622023326423124121832422120918622819116218617517598132190157138137122114
Percentage of ProfitLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax37.246.00.034.435.537.829.330.825.732.723.828.932.233.42.430.131.335.5-45.228.027.822.925.528.028.826.727.526.837.128.926.926.530.226.121.527.127.427.117.324.931.527.224.626.725.724.1

Revenue From Contract With Customer Excluding Assessed Tax

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-09-302009-06-302009-03-31
Value15531600129013561435129012331240121311421060108011751126116510621000975942917928816865834918865877816873767779705756731754688640646567531605577564513477476485451450408
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ConsolidationItems

us-gaap:IntersegmentElimination


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value-44.0-42.0-40.0-39.0-37.0-39.0-36.7-36.4-35.2-34.7-34.3-34.2-33.0-34.8-34.1-33.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-2.8-2.6-3.1-2.9-2.6-3.0-3.0-2.9-2.9-3.0-3.2-3.2-2.8-3.1-2.9-3.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-2.8-2.6-3.1-2.9-2.6-3.0-3.0-2.9-2.9-3.0-3.2-3.2-2.8-3.1-2.9-3.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:IntersegmentElimination100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, mco:MoodysAnalytics


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value575566557532499498515496477474467438425411445372
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax37.035.443.239.234.838.641.840.039.341.544.140.636.236.538.235.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax37.035.443.239.234.838.641.840.039.341.544.140.636.236.538.235.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments mco:MoodysAnalytics100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OperatingSegments, mco:MoodysInvestorsService


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value10221076773863973831754780771702627676782749754723
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax65.867.259.963.667.864.461.263.063.661.559.262.666.666.564.768.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax65.867.259.963.667.864.461.263.063.661.559.262.666.666.564.768.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments mco:MoodysInvestorsService100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ProductOrService

mco:RecurringRevenue


Revenue
Period End2021-06-302020-06-30
Value829729
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax53.450.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax53.450.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax mco:RecurringRevenue100.0100.0

mco:RelationshipRevenue


Revenue
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value812790757729721716683666660646619612602580534
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax50.861.255.850.855.958.155.154.957.861.057.352.153.549.850.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax50.761.255.850.855.958.155.154.957.861.057.352.153.549.850.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax mco:RelationshipRevenue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

mco:TransactionRevenue


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value724788500599706569516557546481413461562523584528
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax46.649.238.844.249.244.141.944.945.142.239.042.747.946.550.249.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax46.649.238.844.249.244.141.944.945.142.239.042.747.946.550.249.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax mco:TransactionRevenue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ProductOrService, us-gaap:StatementBusinessSegments

mco:RecurringRevenue, mco:MoodysAnalytics


Revenue
Period End2021-06-302020-06-30
Value535455
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax34.431.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax34.431.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax mco:RecurringRevenue mco:MoodysAnalytics100.0100.0

mco:RecurringRevenue, mco:MoodysInvestorsService


Revenue
Period End2021-06-302020-06-30
Value294274
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax18.919.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax18.919.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax mco:RecurringRevenue mco:MoodysInvestorsService100.0100.0

mco:RelationshipRevenue, mco:MoodysAnalytics


Revenue
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value521506480455446439415406400387365355346333291
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax32.639.235.431.734.635.633.533.535.136.633.830.330.728.627.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax32.639.235.431.734.635.633.533.535.136.633.830.330.728.627.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax mco:RelationshipRevenue mco:MoodysAnalytics100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

mco:RelationshipRevenue, mco:MoodysInvestorsService


Revenue
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value291284277274275277268260260258254256256247243
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax18.222.020.419.121.322.521.621.522.824.423.521.822.821.222.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax18.222.020.419.121.322.521.621.522.824.423.521.822.821.222.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax mco:RelationshipRevenue mco:MoodysInvestorsService100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

mco:TransactionRevenue, mco:MoodysAnalytics


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value384349514250737869717671666010777
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax2.42.73.83.82.93.96.06.35.76.37.36.65.75.49.27.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax2.42.73.83.82.93.96.06.35.76.37.36.65.75.49.27.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax mco:TransactionRevenue mco:MoodysAnalytics100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

mco:TransactionRevenue, mco:MoodysInvestorsService


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value686745451548664519442478477409336390495463477450
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax44.246.635.040.446.340.235.938.639.435.931.836.142.241.140.942.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax44.246.635.040.446.340.235.938.639.435.931.836.142.241.140.942.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax mco:TransactionRevenue mco:MoodysInvestorsService100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ProductOrService, us-gaap:StatementBusinessSegments, us-gaap:Subsegments

mco:AssetsBackedSecurities, mco:MoodysInvestorsService, mco:StructuredFinanceLineOfBusiness


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value33262825232225252523252427282722
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax2.11.62.21.81.61.72.02.02.12.02.42.32.42.52.32.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax2.11.62.21.81.61.72.02.02.12.02.42.32.42.52.32.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax mco:AssetsBackedSecurities mco:MoodysInvestorsService mco:StructuredFinanceLineOfBusiness100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

mco:BankLoans, mco:MoodysInvestorsService, mco:CorporateFinance


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value157180827343896789837269751211107582
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax10.111.26.45.43.06.95.57.26.96.46.67.010.39.86.57.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax10.111.26.45.43.06.95.57.26.96.46.67.010.39.86.57.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax mco:BankLoans mco:MoodysInvestorsService mco:CorporateFinance100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

mco:CommercialMortgageBackedSecuritiesProduct, mco:MoodysInvestorsService, mco:StructuredFinanceLineOfBusiness


Revenue
Period End2021-06-302021-03-312020-06-302020-03-31
Value23241317
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.51.50.91.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.51.50.91.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax mco:CommercialMortgageBackedSecuritiesProduct mco:MoodysInvestorsService mco:StructuredFinanceLineOfBusiness100.0100.0100.0100.0

mco:CommercialRealEstateFinance, mco:MoodysInvestorsService, mco:StructuredFinanceLineOfBusiness


Revenue
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-312017-09-30
Value16151317251720183225184637
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.21.10.91.32.11.41.71.63.12.41.53.93.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.21.10.91.32.11.41.71.63.12.41.53.93.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax mco:CommercialRealEstateFinance mco:MoodysInvestorsService mco:StructuredFinanceLineOfBusiness100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

mco:HighYield, mco:MoodysInvestorsService, mco:CorporateFinance


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value12414177101997575566857203858576462
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax8.08.86.07.46.95.86.14.65.65.01.93.55.05.15.55.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax8.08.86.07.46.95.86.14.65.65.01.93.55.05.15.55.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax mco:HighYield mco:MoodysInvestorsService mco:CorporateFinance100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

mco:Insurance, mco:MoodysInvestorsService, mco:FinancialInstitutions


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value33433231443030312829153732282923
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax2.12.72.52.33.12.32.52.52.32.51.43.52.82.52.52.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax2.12.72.52.33.12.32.52.52.32.51.43.52.82.52.52.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax mco:Insurance mco:MoodysInvestorsService mco:FinancialInstitutions100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

mco:InvestmentGrade, mco:MoodysInvestorsService, mco:CorporateFinance


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value10213460141291144801059597535172876578
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax6.68.44.710.420.311.26.58.57.98.55.14.76.27.75.67.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax6.68.44.710.420.311.26.58.57.98.55.14.76.27.75.67.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax mco:InvestmentGrade mco:MoodysInvestorsService mco:CorporateFinance100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

mco:ManagedInvestments, mco:MoodysInvestorsService, mco:FinancialInstitutions


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value138.08.06.08.06.05.06.59.54.05.75.57.25.76.04.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.80.50.60.40.60.50.40.50.80.40.50.50.60.50.50.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.80.50.60.40.60.50.40.50.80.40.50.50.60.50.50.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax mco:ManagedInvestments mco:MoodysInvestorsService mco:FinancialInstitutions100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

mco:OtherProductLines, mco:MoodysInvestorsService, mco:CorporateFinance


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value167150152146139145139140139128138130138134128126
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax10.89.411.810.89.711.211.311.311.511.213.112.111.811.911.011.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax10.89.411.810.89.711.211.311.311.511.213.112.111.811.911.011.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax mco:OtherProductLines mco:MoodysInvestorsService mco:CorporateFinance100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

mco:OtherProductLines, mco:MoodysInvestorsService, mco:FinancialInstitutions


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value3.02.03.02.02.03.03.02.83.03.23.20.53.23.33.43.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.20.10.20.10.10.20.20.20.20.30.30.00.30.30.30.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.20.10.20.10.10.20.20.20.20.30.30.00.30.30.30.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax mco:OtherProductLines mco:MoodysInvestorsService mco:FinancialInstitutions100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

mco:OtherProductLines, mco:MoodysInvestorsService, mco:StructuredFinanceLineOfBusiness


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value0.01.00.00.01.01.01.10.81.01.10.40.50.80.60.50.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.00.10.00.00.10.10.10.10.10.10.00.00.10.10.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.00.10.00.00.10.10.10.10.10.10.00.00.10.10.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax mco:OtherProductLines mco:MoodysInvestorsService mco:StructuredFinanceLineOfBusiness0.0100.00.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

mco:ProjectAndInfrastructure, mco:MoodysInvestorsService, mco:PublicProjectAndInfrastructureFinance


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value67766362695260615546495356465659
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax4.34.84.94.64.84.04.95.04.64.14.75.04.84.14.95.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax4.34.84.94.64.84.04.95.04.64.14.75.04.84.14.95.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax mco:ProjectAndInfrastructure mco:MoodysInvestorsService mco:PublicProjectAndInfrastructureFinance100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

mco:PublicFinanceSovereign, mco:MoodysInvestorsService, mco:PublicProjectAndInfrastructureFinance


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value63675871645764575346404551466249
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax4.14.24.55.24.54.45.34.74.44.03.94.24.44.25.44.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax4.14.24.55.24.54.45.34.74.44.03.94.24.44.25.44.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax mco:PublicFinanceSovereign mco:MoodysInvestorsService mco:PublicProjectAndInfrastructureFinance100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

mco:RecurringRevenue, mco:MoodysAnalytics, mco:EnterpriseRiskSolutions


Revenue
Period End2021-06-302020-06-30
Value122105
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax7.97.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax7.97.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax mco:RecurringRevenue mco:MoodysAnalytics mco:EnterpriseRiskSolutions100.0100.0

mco:RecurringRevenue, mco:MoodysAnalytics, mco:ResearchDataAndAnalytics


Revenue
Period End2021-06-302020-06-30
Value413350
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax26.624.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax26.624.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax mco:RecurringRevenue mco:MoodysAnalytics mco:ResearchDataAndAnalytics100.0100.0

mco:RecurringRevenue, mco:MoodysInvestorsService, mco:CorporateFinance


Revenue
Period End2021-06-302020-06-30
Value123115
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax7.98.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax7.98.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax mco:RecurringRevenue mco:MoodysInvestorsService mco:CorporateFinance100.0100.0

mco:RecurringRevenue, mco:MoodysInvestorsService, mco:FinancialInstitutions


Revenue
Period End2021-06-302020-06-30
Value7166
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax4.64.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax4.64.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax mco:RecurringRevenue mco:MoodysInvestorsService mco:FinancialInstitutions100.0100.0

mco:RecurringRevenue, mco:MoodysInvestorsService, mco:PublicProjectAndInfrastructureFinance


Revenue
Period End2021-06-302020-06-30
Value4237
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax2.72.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax2.72.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax mco:RecurringRevenue mco:MoodysInvestorsService mco:PublicProjectAndInfrastructureFinance100.0100.0

mco:RecurringRevenue, mco:MoodysInvestorsService, mco:StructuredFinanceLineOfBusiness


Revenue
Period End2021-06-302020-06-30
Value4846
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax3.13.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax3.13.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax mco:RecurringRevenue mco:MoodysInvestorsService mco:StructuredFinanceLineOfBusiness100.0100.0

mco:RelationshipRevenue, mco:MoodysAnalytics, mco:EnterpriseRiskSolutions


Revenue
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value1221231131051061101029498
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax7.69.58.37.38.28.98.27.78.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax7.69.58.37.38.28.98.27.78.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax mco:RelationshipRevenue mco:MoodysAnalytics mco:EnterpriseRiskSolutions100.0100.0100.0100.0100.0100.0100.0100.0100.0

mco:RelationshipRevenue, mco:MoodysAnalytics, mco:ResearchDataAndAnalytics


Revenue
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value399383367350340329314311303
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax24.929.727.124.426.426.725.325.626.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax24.929.727.124.426.426.725.325.626.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax mco:RelationshipRevenue mco:MoodysAnalytics mco:ResearchDataAndAnalytics100.0100.0100.0100.0100.0100.0100.0100.0100.0

mco:RelationshipRevenue, mco:MoodysInvestorsService, mco:CorporateFinance


Revenue
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value1181121141151151121101111051051041061069995
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax7.48.78.48.08.99.28.99.19.310.09.69.19.48.59.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax7.48.78.48.08.99.28.99.19.310.09.69.19.48.59.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax mco:RelationshipRevenue mco:MoodysInvestorsService mco:CorporateFinance100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

mco:RelationshipRevenue, mco:MoodysInvestorsService, mco:FinancialInstitutions


Revenue
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value726767666567646467626364646261
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax4.55.24.94.65.05.55.25.35.95.95.95.55.75.35.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax4.55.24.94.65.05.55.25.35.95.95.95.55.75.35.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax mco:RelationshipRevenue mco:MoodysInvestorsService mco:FinancialInstitutions100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

mco:RelationshipRevenue, mco:MoodysInvestorsService, mco:MISOther


Revenue
Period End2021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-31
Value8.08.010.09.09.06.04.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.50.60.70.70.70.50.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.50.60.70.70.70.50.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax mco:RelationshipRevenue mco:MoodysInvestorsService mco:MISOther100.0100.0100.0100.0100.0100.0100.0

mco:RelationshipRevenue, mco:MoodysInvestorsService, mco:PublicProjectAndInfrastructureFinance


Revenue
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value434141374041373738383838383838
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax2.73.23.02.63.13.33.03.13.33.63.53.33.43.33.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax2.73.23.02.63.13.33.03.13.33.63.53.33.43.33.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax mco:RelationshipRevenue mco:MoodysInvestorsService mco:PublicProjectAndInfrastructureFinance100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

mco:RelationshipRevenue, mco:MoodysInvestorsService, mco:StructuredFinanceLineOfBusiness


Revenue
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value504847464646474343484443434444
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax3.13.73.53.23.63.83.83.63.84.54.13.73.83.84.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax3.13.73.53.23.63.83.83.63.84.54.13.73.83.84.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax mco:RelationshipRevenue mco:MoodysInvestorsService mco:StructuredFinanceLineOfBusiness100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

mco:ResidentialMortgageBackedSecuritiesProduct, mco:MoodysInvestorsService, mco:StructuredFinanceLineOfBusiness


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value31272224232725222423232326242421
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax2.01.71.71.81.62.12.11.82.02.12.22.22.32.22.12.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax2.01.71.71.81.62.12.11.82.02.12.22.22.32.22.12.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax mco:ResidentialMortgageBackedSecuritiesProduct mco:MoodysInvestorsService mco:StructuredFinanceLineOfBusiness100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

mco:StructuredCredit, mco:MoodysInvestorsService, mco:StructuredFinanceLineOfBusiness


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value53383124212931404135475054434945
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax3.42.42.41.81.52.22.63.23.43.14.54.74.63.94.24.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax3.42.42.41.81.52.22.63.23.43.14.54.74.63.94.24.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax mco:StructuredCredit mco:MoodysInvestorsService mco:StructuredFinanceLineOfBusiness100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

mco:TransactionRevenue, mco:MoodysAnalytics, mco:EnterpriseRiskSolutions


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value16232832263239322324
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.01.42.22.41.82.53.22.61.92.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.01.42.22.41.82.53.22.61.92.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax mco:TransactionRevenue mco:MoodysAnalytics mco:EnterpriseRiskSolutions100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

mco:TransactionRevenue, mco:MoodysAnalytics, mco:ResearchDataAndAnalytics


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value2220211916184.03.04.05.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.41.21.61.41.11.40.30.20.30.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.41.21.61.41.11.40.30.20.30.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax mco:TransactionRevenue mco:MoodysAnalytics mco:ResearchDataAndAnalytics100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

mco:TransactionRevenue, mco:MoodysInvestorsService, mco:CorporateFinance


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value427487259347457338249281276249176192284283234254
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax27.530.420.125.631.826.220.222.722.821.816.717.824.225.220.123.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax27.530.420.125.631.826.220.222.722.821.816.717.824.225.220.123.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax mco:TransactionRevenue mco:MoodysInvestorsService mco:CorporateFinance100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

mco:TransactionRevenue, mco:MoodysInvestorsService, mco:FinancialInstitutions


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value79906267766047556147245656505640
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax5.15.64.84.95.34.73.84.55.04.22.35.24.84.44.93.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax5.15.64.84.95.34.73.84.55.04.22.35.24.84.44.93.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax mco:TransactionRevenue mco:MoodysInvestorsService mco:FinancialInstitutions100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

mco:TransactionRevenue, mco:MoodysInvestorsService, mco:MISOther


Revenue
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-31
Value0.02.01.00.02.00.00.01.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.00.10.10.00.20.00.00.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.00.10.10.00.20.00.00.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax mco:TransactionRevenue mco:MoodysInvestorsService mco:MISOther0.0100.0100.00.0100.00.00.0100.0

mco:TransactionRevenue, mco:MoodysInvestorsService, mco:PublicProjectAndInfrastructureFinance


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value881008092966983827154526069548071
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax5.76.26.26.86.75.36.86.65.94.85.05.65.94.86.96.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax5.76.26.26.86.75.36.86.65.94.85.05.65.94.86.96.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax mco:TransactionRevenue mco:MoodysInvestorsService mco:PublicProjectAndInfrastructureFinance100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

mco:TransactionRevenue, mco:MoodysInvestorsService, mco:StructuredFinanceLineOfBusiness


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value926649413550625868578181857410384
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax5.94.13.83.02.43.95.04.75.65.07.77.57.36.68.97.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax5.94.13.83.02.43.95.04.75.65.07.77.57.36.68.97.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax mco:TransactionRevenue mco:MoodysInvestorsService mco:StructuredFinanceLineOfBusiness100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:Banking, mco:MoodysInvestorsService, mco:FinancialInstitutions


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value1011098695888675798479627277778070
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax6.56.86.77.06.16.76.26.47.07.05.96.76.66.86.96.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax6.56.86.77.06.16.76.26.47.07.05.96.76.66.86.96.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:Banking mco:MoodysInvestorsService mco:FinancialInstitutions100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:StatementBusinessSegments

mco:MoodysAnalytics


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value573564555531497496512493475472464436422406440368
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax36.935.243.039.234.638.441.639.839.241.343.840.336.036.137.834.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax36.935.243.039.234.638.441.639.839.241.343.840.336.036.137.834.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax mco:MoodysAnalytics100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

mco:MoodysInvestorsService


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value9801036735825938794719746738670595644752719724694
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax63.164.857.060.865.461.658.460.260.858.756.259.764.063.962.265.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax63.164.857.060.865.461.658.460.260.858.756.259.764.063.962.265.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax mco:MoodysInvestorsService100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:StatementBusinessSegments, us-gaap:Subsegments

mco:MoodysAnalytics, mco:EnterpriseRiskSolutions


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value138145151145131138149133117121124113109102142112
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax8.99.111.710.79.110.712.110.79.710.711.710.59.39.112.310.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax8.99.111.710.79.110.712.110.79.710.711.710.59.39.112.310.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax mco:MoodysAnalytics mco:EnterpriseRiskSolutions100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

mco:MoodysAnalytics, mco:ResearchDataAndAnalytics


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value435419404386366358332317315307297282275267258218
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax28.026.231.328.525.527.827.025.626.026.928.026.123.523.722.120.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax28.026.231.328.525.527.827.025.626.026.928.026.123.523.722.120.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax mco:MoodysAnalytics mco:ResearchDataAndAnalytics100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

mco:MoodysInvestorsService, mco:CorporateFinance


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value550605371461572453362392387355291296391389333350
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax35.437.828.834.039.935.129.431.631.931.127.527.433.334.628.632.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax35.437.828.834.039.935.129.431.631.931.127.527.433.334.628.632.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax mco:MoodysInvestorsService mco:CorporateFinance100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

mco:MoodysInvestorsService, mco:FinancialInstitutions


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value15016212913414212511412012511587119120114119102
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax9.710.110.09.99.99.79.39.710.310.18.211.110.310.110.29.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax9.710.110.09.99.99.79.39.710.310.18.211.110.310.110.29.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax mco:MoodysInvestorsService mco:FinancialInstitutions100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

mco:MoodysInvestorsService, mco:MISOther


Revenue
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-31
Value10.010.09.010.0119.06.05.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.60.60.70.70.90.70.50.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.60.60.70.70.90.70.50.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax mco:MoodysInvestorsService mco:MISOther100.0100.0100.0100.0100.0100.0100.0100.0

mco:MoodysInvestorsService, mco:PublicProjectAndInfrastructureFinance


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value13014312113313310912411910892909910893119109
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax8.48.99.49.89.38.410.19.78.98.18.69.29.28.310.210.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax8.48.99.49.89.38.410.19.78.98.18.69.29.28.310.210.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax mco:MoodysInvestorsService mco:PublicProjectAndInfrastructureFinance100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

mco:MoodysInvestorsService, mco:RatingRevenue


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value9701026718816928783710737733664590640747714720689
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax62.564.155.760.264.760.757.659.560.458.255.759.263.663.561.864.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax62.564.155.760.264.760.757.659.560.458.255.759.263.663.561.864.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax mco:MoodysInvestorsService mco:RatingRevenue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

mco:MoodysInvestorsService, mco:StructuredFinanceLineOfBusiness


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value14011697888196108105112100121125128117147128
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax9.07.27.56.55.67.48.88.59.28.811.411.610.910.512.712.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax9.07.27.56.55.67.48.88.59.28.811.411.610.910.512.712.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax mco:MoodysInvestorsService mco:StructuredFinanceLineOfBusiness100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:StatementBusinessSegments, us-gaap:SubsegmentsConsolidationItems

mco:MoodysAnalytics, us-gaap:IntersegmentElimination


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value2.02.02.01.02.02.02.32.12.22.42.32.62.45.04.44.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.10.10.20.10.10.20.20.20.20.20.20.20.20.40.40.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.10.10.20.10.10.20.20.20.20.20.20.20.20.40.40.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax mco:MoodysAnalytics us-gaap:IntersegmentElimination100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

mco:MoodysAnalytics, us-gaap:OperatingSegments


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value575566557532499498515496477474467438425411445372
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax37.035.443.239.234.838.641.840.039.341.544.140.636.236.538.235.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax37.035.443.239.234.838.641.840.039.341.544.140.636.236.538.235.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax mco:MoodysAnalytics us-gaap:OperatingSegments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

mco:MoodysInvestorsService, us-gaap:IntersegmentElimination


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value42403838353734343332323130292929
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax2.72.52.92.82.42.92.82.82.72.83.02.92.62.62.52.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax2.72.52.92.82.42.92.82.82.72.83.02.92.62.62.52.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax mco:MoodysInvestorsService us-gaap:IntersegmentElimination100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

mco:MoodysInvestorsService, us-gaap:OperatingSegments


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value10221076773863973831754780771702627676782749754723
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax65.867.259.963.667.864.461.263.063.661.559.262.666.666.564.768.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax65.867.259.963.667.864.461.263.063.661.559.262.666.666.564.768.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax mco:MoodysInvestorsService us-gaap:OperatingSegments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:StatementBusinessSegments, us-gaap:TimingOfTransferOfGoodOrService

mco:MoodysAnalytics, us-gaap:TransferredAtPointInTime


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value20293230203949302130501914
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.31.82.52.21.43.04.02.51.82.64.71.81.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.31.82.52.21.43.04.02.51.82.64.71.81.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax mco:MoodysAnalytics us-gaap:TransferredAtPointInTime100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

mco:MoodysAnalytics, us-gaap:TransferredOverTime


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value553535523501477457463463453442415416408
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax35.633.440.536.933.235.437.637.337.438.739.238.534.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax35.633.440.536.933.235.437.637.337.438.739.238.534.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax mco:MoodysAnalytics us-gaap:TransferredOverTime100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

mco:MoodysInvestorsService, us-gaap:TransferredAtPointInTime


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value686745451548664519442478477410336390495
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax44.246.635.040.446.340.235.938.639.435.931.836.142.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax44.246.635.040.446.340.235.938.639.435.931.836.142.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax mco:MoodysInvestorsService us-gaap:TransferredAtPointInTime100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

mco:MoodysInvestorsService, us-gaap:TransferredOverTime


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value294291284277274275277268260260258254256
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax18.918.222.020.419.121.322.521.621.522.824.423.521.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax18.918.222.020.419.121.322.521.621.522.824.423.521.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax mco:MoodysInvestorsService us-gaap:TransferredOverTime100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:StatementGeographical

country:US


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-30
Value831885675729837714634659637612546559625597614588567577533545545480481482545499478449461425417391408406400375343344286274315
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax53.555.352.353.858.355.351.553.252.653.651.651.853.253.052.755.456.859.256.759.558.858.855.657.759.557.754.655.052.855.553.555.454.055.553.254.553.753.250.551.652.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax53.555.352.353.858.355.351.553.252.653.651.651.853.253.052.755.456.859.256.759.558.858.855.657.759.557.754.655.052.855.553.555.454.055.553.254.553.753.250.551.652.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax country:US100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

srt:Americas


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value868172708177737773655753
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax5.55.15.65.25.66.06.06.26.05.75.55.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax5.55.15.65.25.66.06.06.26.05.75.55.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:Americas100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

srt:AsiaPacific


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value155156135156144136135142141132126123
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax10.09.810.511.510.010.511.011.511.611.611.911.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax10.09.810.511.510.010.511.011.511.611.611.911.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:AsiaPacific100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:EMEA


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value481478408401373363389361362333329344
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax31.029.931.629.626.028.131.629.129.829.231.031.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax31.029.931.629.626.028.131.629.129.829.231.031.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:EMEA100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:NonUs


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value722715615627598576598580575530513521549529551474
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax46.544.747.746.241.744.748.546.847.446.448.448.246.847.047.344.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax46.544.747.746.241.744.748.546.847.446.448.448.246.847.047.344.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:NonUs100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:StatementGeographical, us-gaap:StatementBusinessSegments

country:US, mco:MoodysAnalytics


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value249238232223221211214206201200197174174164174160
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax16.014.918.016.415.416.417.416.616.617.618.616.214.814.614.915.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax16.014.918.016.415.416.417.416.616.617.618.616.214.814.614.915.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax country:US mco:MoodysAnalytics100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

country:US, mco:MoodysInvestorsService


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value582647443506616503420453436411349384451433440427
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax37.540.434.337.342.939.034.136.535.936.033.035.638.438.537.840.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax37.540.434.337.342.939.034.136.535.936.033.035.638.438.537.840.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax country:US mco:MoodysInvestorsService100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

srt:Americas, mco:MoodysAnalytics


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value363740383238363732342931
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax2.32.33.12.82.22.93.03.02.63.02.82.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax2.32.33.12.82.22.93.03.02.63.02.82.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:Americas mco:MoodysAnalytics100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

srt:Americas, mco:MoodysInvestorsService


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value504432324939373941312822
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax3.22.82.52.43.43.03.03.23.42.72.72.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax3.22.82.52.43.43.03.03.23.42.72.72.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:Americas mco:MoodysInvestorsService100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

srt:AsiaPacific, mco:MoodysAnalytics


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value555960575455576357535150
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax3.53.74.74.23.84.34.65.14.74.64.84.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax3.53.74.74.23.84.34.65.14.74.64.84.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:AsiaPacific mco:MoodysAnalytics100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

srt:AsiaPacific, mco:MoodysInvestorsService


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value1009775999081787884797572
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax6.46.15.87.36.36.36.46.46.96.97.16.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax6.46.15.87.36.36.36.46.46.96.97.16.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:AsiaPacific mco:MoodysInvestorsService100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:EMEA, mco:MoodysAnalytics


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value233230223213190192204186184184187179
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax15.014.417.315.713.214.916.615.015.216.117.716.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax15.014.417.315.713.214.916.615.015.216.117.716.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:EMEA mco:MoodysAnalytics100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:EMEA, mco:MoodysInvestorsService


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value248248185188183171184174178149141165
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax16.015.514.313.912.813.314.914.114.713.013.315.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax16.015.514.313.912.813.314.914.114.713.013.315.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:EMEA mco:MoodysInvestorsService100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:NonUs, mco:MoodysAnalytics


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value324326323308276285298287273271267261248242266208
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax20.920.425.022.719.222.124.223.222.523.725.324.221.221.522.919.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax20.920.425.022.719.222.124.223.222.523.725.324.221.221.522.919.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:NonUs mco:MoodysAnalytics100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:NonUs, mco:MoodysInvestorsService


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value398389292319322291299293302258245260301286284266
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax25.624.322.623.522.422.624.323.624.922.723.224.125.625.424.425.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax25.624.322.623.522.422.624.323.624.922.723.224.125.625.424.425.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:NonUs mco:MoodysInvestorsService100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:StatementGeographical, us-gaap:StatementBusinessSegments, us-gaap:Subsegments

country:US, mco:MoodysAnalytics, mco:EnterpriseRiskSolutions


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value59555656545358484648454342384639
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax3.83.44.34.13.84.14.73.93.84.24.34.03.63.44.03.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax3.83.44.34.13.84.14.73.93.84.24.34.03.63.44.03.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax country:US mco:MoodysAnalytics mco:EnterpriseRiskSolutions100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

country:US, mco:MoodysAnalytics, mco:ResearchDataAndAnalytics


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value190183176167167158145139137134132116118112113107
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax12.211.413.612.311.612.211.811.311.411.812.510.810.110.09.810.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax12.211.413.612.311.612.211.811.311.411.812.510.810.110.09.810.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax country:US mco:MoodysAnalytics mco:ResearchDataAndAnalytics100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

country:US, mco:MoodysInvestorsService, mco:CorporateFinance


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value345414253311413314223258242242179184255257211234
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax22.225.919.622.928.824.318.220.920.021.216.917.021.722.818.122.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax22.225.919.622.928.824.318.220.920.021.216.917.021.722.818.122.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax country:US mco:MoodysInvestorsService mco:CorporateFinance100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

country:US, mco:MoodysInvestorsService, mco:FinancialInstitutions


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value69866159706048535246315954485140
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax4.45.44.74.44.94.73.94.34.34.03.05.54.64.34.43.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax4.45.44.74.44.94.73.94.34.34.03.05.54.64.34.43.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax country:US mco:MoodysInvestorsService mco:FinancialInstitutions100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

country:US, mco:MoodysInvestorsService, mco:MISOther


Revenue
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-31
Value1.01.00.01.00.00.01.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.10.10.00.10.00.00.10.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.10.10.00.10.00.00.10.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax country:US mco:MoodysInvestorsService mco:MISOther100.0100.00.0100.00.00.0100.00.0

country:US, mco:MoodysInvestorsService, mco:PublicProjectAndInfrastructureFinance


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value79787482876879726960545961537363
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax5.14.95.76.06.15.36.55.95.75.35.25.55.24.76.36.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax5.14.95.76.06.15.36.55.95.75.35.25.55.24.76.36.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax country:US mco:MoodysInvestorsService mco:PublicProjectAndInfrastructureFinance100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

country:US, mco:MoodysInvestorsService, mco:RatingRevenue


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value581646442506615503419453436411349384451433440427
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax37.440.434.337.342.939.034.036.535.936.033.035.638.438.437.840.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax37.440.434.337.342.939.034.036.535.936.033.035.638.438.437.840.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax country:US mco:MoodysInvestorsService mco:RatingRevenue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

country:US, mco:MoodysInvestorsService, mco:StructuredFinanceLineOfBusiness


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value886854544561686771628381807410489
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax5.74.24.24.03.14.75.55.55.95.47.97.56.86.68.98.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax5.74.24.24.03.14.75.55.55.95.47.97.56.86.68.98.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax country:US mco:MoodysInvestorsService mco:StructuredFinanceLineOfBusiness100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:NonUs, mco:MoodysAnalytics, mco:EnterpriseRiskSolutions


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value79909589778590857173727066639673
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax5.15.67.46.65.46.67.46.95.96.46.96.55.75.78.36.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax5.15.67.46.65.46.67.46.95.96.46.96.55.75.78.36.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:NonUs mco:MoodysAnalytics mco:EnterpriseRiskSolutions100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:NonUs, mco:MoodysAnalytics, mco:ResearchDataAndAnalytics


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value245236228219199200186177177172169165157154144110
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax15.814.817.716.213.915.515.214.314.615.116.015.313.413.712.410.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax15.814.817.716.213.915.515.214.314.615.116.015.313.413.712.410.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:NonUs mco:MoodysAnalytics mco:ResearchDataAndAnalytics100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:NonUs, mco:MoodysInvestorsService, mco:CorporateFinance


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value205191118150159139138133144112103112135132122116
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax13.211.99.111.111.110.811.210.711.99.99.810.411.611.710.510.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax13.211.99.111.111.110.811.210.711.99.99.810.411.611.710.510.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:NonUs mco:MoodysInvestorsService mco:CorporateFinance100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:NonUs, mco:MoodysInvestorsService, mco:FinancialInstitutions


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value81766875726566667369555966656761
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax5.24.85.35.55.05.05.45.46.06.15.25.55.65.85.85.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax5.24.85.35.55.05.05.45.46.06.15.25.55.65.85.85.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:NonUs mco:MoodysInvestorsService mco:FinancialInstitutions100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:NonUs, mco:MoodysInvestorsService, mco:MISOther


Revenue
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-31
Value9.09.09.09.0119.05.05.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.60.60.70.60.90.70.40.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.60.60.70.60.90.70.40.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:NonUs mco:MoodysInvestorsService mco:MISOther100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:NonUs, mco:MoodysInvestorsService, mco:PublicProjectAndInfrastructureFinance


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value51654751464145473932353947394545
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax3.34.13.63.83.23.23.73.83.22.83.43.74.03.53.94.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax3.34.13.63.83.23.23.73.83.22.83.43.74.03.53.94.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:NonUs mco:MoodysInvestorsService mco:PublicProjectAndInfrastructureFinance100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:NonUs, mco:MoodysInvestorsService, mco:RatingRevenue


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value389380276310313280290284297253240255296281280262
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax25.023.821.422.921.821.723.622.924.522.222.723.625.325.024.024.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax25.023.821.422.921.821.723.622.924.522.222.723.625.325.024.024.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:NonUs mco:MoodysInvestorsService mco:RatingRevenue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:NonUs, mco:MoodysInvestorsService, mco:StructuredFinanceLineOfBusiness


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value52484334363540374038464447434339
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax3.33.03.32.52.52.73.33.03.33.44.34.14.13.93.73.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax3.33.03.32.52.52.73.33.03.33.44.34.14.13.93.73.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:NonUs mco:MoodysInvestorsService mco:StructuredFinanceLineOfBusiness100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:SubsegmentsConsolidationItems

us-gaap:IntersegmentElimination


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value-44.0-42.0-40.0-39.0-37.0-39.0-36.7-36.4-35.2-34.7-34.3-34.2-33.0-34.8-34.1-33.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-2.8-2.6-3.1-2.9-2.6-3.0-3.0-2.9-2.9-3.0-3.2-3.2-2.8-3.1-2.9-3.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-2.8-2.6-3.1-2.9-2.6-3.0-3.0-2.9-2.9-3.0-3.2-3.2-2.8-3.1-2.9-3.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:IntersegmentElimination100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:TimingOfTransferOfGoodOrService

us-gaap:TransferredAtPointInTime


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value706774483578684558492509499440386410509
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax45.548.437.442.647.743.339.941.141.138.536.537.943.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax45.548.437.442.647.743.339.941.141.138.536.537.943.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:TransferredAtPointInTime100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:TransferredOverTime


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value847826807778751732740731714702673670665
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax54.551.662.657.452.356.760.158.958.961.563.662.156.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax54.551.662.657.452.356.760.158.958.961.563.662.156.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:TransferredOverTime100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Revenues

us-gaap:Revenues

us-gaap:Revenues


Revenues
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-09-302009-06-302009-03-31
Value15531600129013561435129012331240121311421060108011751126116510621000975942917928816865834918865877816873767779705756731754688640646567531605577564513477476485451450408
Percentage of Revenues100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Selling General And Administrative Expense

us-gaap:SellingGeneralAndAdministrativeExpense

us-gaap:SellingGeneralAndAdministrativeExpense


Selling
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value327293350271307301318291274281278260270271304247217221253225228232252220227221250206217195223187185227236187159168193145142148169152137128
Percentage of SellingGeneralAndAdministrativeExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax21.118.327.120.021.423.325.923.522.624.626.224.123.024.126.123.321.822.826.924.624.628.529.126.424.725.628.525.324.925.428.626.524.531.031.327.224.926.134.127.323.625.730.029.728.827.0

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

us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, mco:AccumulatedDefinedBenefitPlansAdjustmentNetGainLossAndPriorServiceCostsPortionAttributableToParent


Selling
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value-1.00.0-1.00.00.0-1.00.0
Percentage of SellingGeneralAndAdministrativeExpense-0.40.0-0.30.00.0-0.40.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.10.0-0.10.00.0-0.10.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome mco:AccumulatedDefinedBenefitPlansAdjustmentNetGainLossAndPriorServiceCostsPortionAttributableToParent0.00.00.00.00.00.00.0

Assets

us-gaap:Assets

us-gaap:Assets


Assets
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value125521250012409116721129811306102659477959195189526843987519014859483046536543553275019504451145123477249994976466949934786435343954154379439113960366229632994287625212744252425402003
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Liabilities

us-gaap:Liabilities

us-gaap:Liabilities


Liabilities
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value1017210275106469979100611050194288774901691938869783382918594870984617003616063545377541454665456501351025122462643753990385339673781325833713492327127852833297426952761274728382599
Percentage of Liabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets81.082.285.885.589.192.991.892.694.096.693.192.894.795.3101.3101.9107.2113.3119.3107.1107.3106.9106.5105.0102.1102.999.187.683.488.590.391.085.986.288.289.394.094.6103.4106.9100.6108.8111.7129.8

Liabilities And Stockholders Equity

us-gaap:LiabilitiesAndStockholdersEquity

us-gaap:LiabilitiesAndStockholdersEquity


Liabilities
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value125521250012409116721129811306102659477959195189526843987519014859483046536543553275019504451145123477249994976466949934786435343954154379439113960366229632994287625212744252425402003
Percentage of LiabilitiesAndStockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Stockholders Equity

us-gaap:StockholdersEquity

us-gaap:StockholdersEquity


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value21862030156914971041582612472352123459400242199-327.7-369.1-679.8-927.1-1225.0-564.5-600.0-581.6-565.0-469.9-331.2-373.7-187.82504453853372814474573853119982-169.0-184.0-26.1-231.9-309.6-606.2
Percentage of StockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets17.416.212.612.89.25.16.05.03.71.34.84.72.82.2-3.8-4.4-10.4-17.1-23.0-11.2-11.9-11.4-11.0-9.8-6.6-7.5-4.05.09.38.97.76.811.811.79.78.53.32.8-5.9-7.3-1.0-9.2-12.2-30.3

us-gaap:StockholdersEquity us-gaap:StatementEquityComponents

mco:AccumulatedNetInvestmentHedgesGainLossAttributabletoParent


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-312016-12-31
Value-117.0-88.0-220.0-73.07014354126255433-1.035
Percentage of StockholdersEquity-5.4-4.3-14.0-4.96.724.68.826.77.143.87.20.3-2.9
Percentage of Assets-0.9-0.7-1.8-0.60.61.30.51.30.30.60.3-0.00.7
Percentage of Assets mco:AccumulatedNetInvestmentHedgesGainLossAttributabletoParent0.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AccumulatedDefinedBenefitPlansAdjustment


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-312016-12-31
Value-108.0-116.0-118.0-89.0-84.0-92.0-92.0-69.0-70.0-69.0-53.0-61.0-79.0
Percentage of StockholdersEquity-4.9-5.7-7.5-5.9-8.1-15.8-15.0-14.6-19.8-56.0-11.518.66.4
Percentage of Assets-0.9-0.9-1.0-0.8-0.7-0.8-0.9-0.7-0.7-0.7-0.6-0.7-1.5
Percentage of Assets us-gaap:AccumulatedDefinedBenefitPlansAdjustment0.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AccumulatedGainLossNetCashFlowHedgeParent


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-06-302019-03-312018-12-312017-12-312016-12-31
Value-48.0-48.0-49.0-49.0-49.0-35.00.00.00.00.01.02.0
Percentage of StockholdersEquity-2.2-2.4-3.1-3.3-4.7-6.00.00.00.00.0-0.3-0.2
Percentage of Assets-0.4-0.4-0.4-0.4-0.4-0.30.00.00.00.00.00.0
Percentage of Assets us-gaap:AccumulatedGainLossNetCashFlowHedgeParent0.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AccumulatedOtherComprehensiveIncome


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-312016-12-31
Value-425.0-440.0-432.0-504.0-542.0-554.0-439.0-537.0-446.0-455.0-426.0-172.0-364.0
Percentage of StockholdersEquity-19.4-21.7-27.5-33.7-52.1-95.2-71.7-113.6-126.4-369.3-92.652.529.7
Percentage of Assets-3.4-3.5-3.5-4.3-4.8-4.9-4.3-5.7-4.6-4.8-4.5-2.0-6.8
Percentage of Assets us-gaap:AccumulatedOtherComprehensiveIncome0.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AccumulatedTranslationAdjustment


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-312016-12-31
Value-152.0-188.0-45.0-293.0-479.0-570.0-401.0-594.0-401.0-440.0-406.0-113.0-325.0
Percentage of StockholdersEquity-7.0-9.3-2.9-19.6-46.0-97.9-65.5-125.7-113.7-357.1-88.334.526.5
Percentage of Assets-1.2-1.5-0.4-2.5-4.2-5.0-3.9-6.3-4.2-4.6-4.3-1.3-6.1
Percentage of Assets us-gaap:AccumulatedTranslationAdjustment0.00.00.00.00.00.00.00.00.00.00.00.00.0

Assets Current

us-gaap:AssetsCurrent

us-gaap:AssetsCurrent


Assets
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value47344695450942813963399436793042315428983386251628392818258022784559348532533016303030853243286230643039268630612944294529682782244225202525220515191526142413601543133913431012
Percentage of AssetsCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets37.737.636.336.735.135.335.832.132.930.535.629.832.431.330.027.469.864.161.160.160.160.363.360.061.361.157.561.361.567.767.567.064.464.463.860.251.351.049.553.956.253.152.950.6

Cash And Cash Equivalents At Carrying Value

us-gaap:CashAndCashEquivalentsAtCarryingValue

us-gaap:CashAndCashEquivalentsAtCarryingValue


Cash
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312008-12-312007-12-31
Value28092769259724922099214118321178119511961685103413141277107196232802129205117461674157617571471153815091219194017771792191918351633175817551518824814760854938719659793485496473245426
Percentage of CashAndCashEquivalentsAtCarryingValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets22.422.220.921.418.618.917.812.412.512.617.712.315.014.212.511.650.239.238.534.833.230.834.330.830.830.326.138.937.141.243.744.243.044.944.341.527.827.226.433.934.228.526.00.00.00.023.70.00.0

us-gaap:CashAndCashEquivalentsAtCarryingValue us-gaap:FinancialInstrument

us-gaap:CertificatesOfDeposit


Cash
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-31
Value137015311325128410281176866327327432904202238
Percentage of CashAndCashEquivalentsAtCarryingValue48.855.351.051.549.054.947.327.827.436.153.719.522.3
Percentage of Assets10.912.210.711.09.110.48.43.53.44.59.52.42.8
Percentage of Assets us-gaap:CertificatesOfDeposit0.00.00.00.00.00.00.00.00.00.00.00.00.0

Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents


Cash
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-312016-12-31
Value28092769259724922099214118321178119611971685103410712052
Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets22.422.220.921.418.618.917.812.412.512.617.712.312.538.5

Short Term Investments

us-gaap:ShortTermInvestments

us-gaap:ShortTermInvestments


Short
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value88969996100909895119114132110101100111108861321733113524904744705084854581641821771862091711172215131413116.71210.0
Percentage of ShortTermInvestments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.70.80.80.80.90.81.01.01.21.21.41.31.21.11.31.31.32.43.36.27.09.69.39.910.29.89.83.33.84.14.35.00.50.30.50.60.50.40.50.50.40.30.50.5

us-gaap:ShortTermInvestments us-gaap:FinancialInstrument

us-gaap:CertificatesOfDeposit


Short
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-31
Value8896999697879588104110115110111
Percentage of ShortTermInvestments100.0100.0100.0100.097.096.796.992.187.497.387.4100.0100.0
Percentage of Assets0.70.80.80.80.90.80.90.91.11.21.21.31.3
Percentage of Assets us-gaap:CertificatesOfDeposit0.00.00.00.00.00.00.00.00.00.00.00.00.0

Accounts Receivable Net Current

us-gaap:AccountsReceivableNetCurrent

us-gaap:AccountsReceivableNetCurrent


Accounts
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value1458149714301360140114131419122812451301128711311137120711471007916953887831843852802720801842792712758737694592607637621549530589489400492503497444
Percentage of AccountsReceivableNetCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets11.612.011.511.712.412.513.813.013.013.713.513.413.013.413.312.114.017.516.716.616.716.715.715.116.016.917.014.315.816.915.814.216.016.315.715.017.919.717.015.917.919.919.622.2

Other Assets Current

us-gaap:OtherAssetsCurrent

us-gaap:OtherAssetsCurrent


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value37933338333336335033028633528628223828623325020027526914012715916617916317516417219717711911498147819168109687749566712751
Percentage of OtherAssetsCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets3.02.73.12.93.23.13.23.03.53.03.02.83.32.62.92.44.25.02.62.53.23.33.53.43.53.33.73.93.72.72.62.43.92.12.31.93.72.32.72.02.12.75.02.6

Noncurrent Assets

us-gaap:NoncurrentAssets

us-gaap:NoncurrentAssets


Noncurrent
Period End2020-12-312019-12-312018-12-312017-12-31
Value7051596856675710
Percentage of NoncurrentAssets100.0100.0100.0100.0
Percentage of Assets56.858.159.566.4

us-gaap:NoncurrentAssets us-gaap:StatementGeographical

country:US


Noncurrent
Period End2020-12-312019-12-312018-12-312017-12-31
Value21621290982673
Percentage of NoncurrentAssets30.721.617.311.8
Percentage of Assets17.412.610.37.8
Percentage of Assets country:US0.00.00.00.0

us-gaap:NonUs


Noncurrent
Period End2020-12-312019-12-312018-12-312017-12-31
Value4889467846855037
Percentage of NoncurrentAssets69.378.482.788.2
Percentage of Assets39.445.649.258.6
Percentage of Assets us-gaap:NonUs0.00.00.00.0

Property Plant And Equipment Gross

us-gaap:PropertyPlantAndEquipmentGross

us-gaap:PropertyPlantAndEquipmentGross


Property
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-31
Value1206113111101031921825753654621585520457
Percentage of PropertyPlantAndEquipmentGross100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets9.711.011.712.017.316.116.114.915.720.320.522.9

us-gaap:PropertyPlantAndEquipmentGross us-gaap:PropertyPlantAndEquipmentByType

mco:ComputerSoftware


Property
Period End2020-12-312019-12-31
Value666619
Percentage of PropertyPlantAndEquipmentGross55.254.7
Percentage of Assets5.46.0
Percentage of Assets mco:ComputerSoftware0.00.0

us-gaap:FurnitureAndFixtures


Property
Period End2020-12-312019-12-312018-12-31
Value495152
Percentage of PropertyPlantAndEquipmentGross4.14.54.7
Percentage of Assets0.40.50.5
Percentage of Assets us-gaap:FurnitureAndFixtures0.00.00.0

us-gaap:LeaseholdImprovements


Property
Period End2020-12-312019-12-312018-12-31
Value231240242
Percentage of PropertyPlantAndEquipmentGross19.221.221.8
Percentage of Assets1.92.32.5
Percentage of Assets us-gaap:LeaseholdImprovements0.00.00.0

us-gaap:MachineryAndEquipment


Property
Period End2020-12-312019-12-312018-12-31
Value260221242
Percentage of PropertyPlantAndEquipmentGross21.619.521.8
Percentage of Assets2.12.22.5
Percentage of Assets us-gaap:MachineryAndEquipment0.00.00.0

Accumulated Depreciation Depletion And Amortization Property Plant And Equipment

us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment

us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment


Accumulated
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value969946928907880853839816797834790767748731706681645620595581560541518501489467451414414391375343343328314297286274258244232214200164
Percentage of AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets7.77.67.57.87.87.58.28.68.38.88.39.18.58.18.28.29.911.411.211.611.110.610.110.59.89.49.78.38.79.08.58.39.18.47.98.19.79.29.09.78.58.57.98.2

Amortization Of Intangible Assets

us-gaap:AmortizationOfIntangibleAssets

us-gaap:AmortizationOfIntangibleAssets


Amortization
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value363534313128252426262624252525188.68.58.78.98.77.97.87.68.08.57.96.96.37.37.07.06.97.17.68.17.17.35.95.04.84.84.34.23.94.0
Percentage of AmortizationOfIntangibleAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Property Plant And Equipment Net

us-gaap:PropertyPlantAndEquipmentNet

us-gaap:PropertyPlantAndEquipmentNet


Property
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value282269278282298285292292300318320311312321325332329329325329323310306306304299302303298282278284287296307315317324326323325324319293
Percentage of PropertyPlantAndEquipmentNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets2.22.22.22.42.62.52.83.13.13.33.43.73.63.63.84.05.06.16.16.66.46.16.06.46.16.06.56.16.26.56.36.87.67.67.88.610.710.811.412.811.812.912.614.6

Long Term Investments

us-gaap:LongTermInvestments

us-gaap:LongTermInvestments


Long
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302013-12-31
Value83676654464910.0205.722184548442227343332615955555845474843440.0
Percentage of LongTermInvestments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0
Percentage of Assets0.70.50.50.50.40.40.10.20.10.20.20.50.50.50.30.30.50.60.61.21.21.11.11.20.91.01.00.90.90.0

Investments In Affiliates Subsidiaries Associates And Joint Ventures

us-gaap:InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures

us-gaap:InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures


Investments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302011-12-312010-12-312009-12-31
Value151149135123125121117113121111104981071009983808626181630282522232120173937353540384044373030
Percentage of InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets1.21.21.11.11.11.11.11.21.31.21.11.21.21.11.21.01.21.60.50.40.30.60.60.50.40.50.50.40.40.90.90.90.91.01.01.11.51.31.21.5

Goodwill

us-gaap:Goodwill

us-gaap:Goodwill


Goodwill
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-312008-12-31
Value4590456645564282416241223722361036643762378136613662383137533722105410291023104010471050976990100698810211000955656665630619623637646638656642451470463465349338
Percentage of Goodwill100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets36.636.536.736.736.836.536.338.138.239.539.743.441.942.543.744.816.118.919.220.720.820.519.120.720.119.921.920.020.015.115.115.216.315.916.117.621.521.922.417.917.118.418.317.40.0

us-gaap:Goodwill us-gaap:BusinessAcquisition

mco:AcquireMediaZMFinancialSystemsCatylistInc


Goodwillus-gaap:
Period End2020-12-31
Value131
Percentage of Goodwill2.9
Percentage of Assets1.1
Percentage of Assets mco:AcquireMediaZMFinancialSystemsCatylistInc0.0

mco:Cortera


Goodwillus-gaap:
Period End2021-03-19
Value95
Percentage of Goodwill0.0
Percentage of Assets0.0
Percentage of Assets mco:Cortera0.0

us-gaap:Goodwill us-gaap:StatementBusinessSegments

mco:MoodysAnalytics


Goodwillus-gaap:
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302014-12-312013-12-312013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-312009-12-31
Value4278425442453980386338083407329033523495352333893377353934683434768755746761762766691697722653612625635627645631440458454338
Percentage of Goodwill93.293.293.292.992.892.491.591.191.592.993.292.692.292.492.492.372.973.472.973.272.972.970.970.470.798.398.298.298.398.398.398.397.697.497.696.8
Percentage of Assets34.134.034.234.134.233.733.234.734.936.737.040.238.639.340.441.411.813.914.015.215.115.013.514.615.514.915.715.817.321.221.522.017.516.717.916.9
Percentage of Assets mco:MoodysAnalytics0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.048.845.150.352.148.949.053.655.449.90.0

mco:MoodysInvestorsService


Goodwillus-gaap:
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302014-12-312013-12-312013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-312009-12-31
Value3123123113022993143153203122672572722852912852872862742772792842842842922981111111111111111121111
Percentage of Goodwill6.86.86.87.17.27.68.58.98.57.16.87.47.87.67.67.727.126.627.126.827.127.129.129.629.31.71.81.81.71.71.71.72.42.62.43.2
Percentage of Assets2.52.52.52.62.62.83.13.43.32.82.73.23.33.23.33.54.45.05.25.65.65.65.66.16.40.30.30.30.30.40.40.40.40.40.40.6
Percentage of Assets mco:MoodysInvestorsService0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.01.01.31.21.21.31.51.91.41.80.0

Intangible Assets Net Excluding Goodwill

us-gaap:IntangibleAssetsNetExcludingGoodwill

us-gaap:IntangibleAssetsNetExcludingGoodwill


Intangible
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value1784181018241717169717091498145414861530156615171541164116311633287289296307319329299308322328345349310212221198202212226233238249253153166167168104
Percentage of IntangibleAssetsNetExcludingGoodwill100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets14.214.514.714.715.015.114.615.315.516.116.418.017.618.219.019.74.45.35.66.16.36.45.86.56.56.67.47.06.54.95.04.85.35.45.76.48.08.38.86.16.16.66.65.2

us-gaap:IntangibleAssetsNetExcludingGoodwill us-gaap:FiniteLivedIntangibleAssetsByMajorClass

us-gaap:ComputerSoftwareIntangibleAsset


Intangible
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302013-12-31
Value2472552512262252282412362382412512522592792802832830323638422729313336372932
Percentage of IntangibleAssetsNetExcludingGoodwill13.814.113.813.213.313.316.116.316.015.816.116.616.817.017.217.49.910.511.111.712.212.89.09.59.910.110.710.89.614.5
Percentage of Assets2.02.02.01.92.02.02.32.52.52.52.63.03.03.13.33.40.40.60.60.70.80.80.50.60.60.70.80.80.60.7
Percentage of Assets us-gaap:ComputerSoftwareIntangibleAsset0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:CustomerRelationships


Intangible
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value12641276131012371216121610901048107811301153111111251196118511811831841851921962011881922002032122151781451501281301371451491511571598794959537
Percentage of IntangibleAssetsNetExcludingGoodwill70.970.571.872.071.771.272.872.172.673.973.673.273.072.972.672.364.063.762.762.461.761.263.062.562.161.961.461.657.568.468.165.064.864.764.363.963.563.162.856.956.957.156.836.0
Percentage of Assets10.110.210.610.610.810.810.611.111.211.912.113.212.913.313.814.22.83.43.53.83.93.93.74.04.04.14.54.33.73.33.43.13.43.53.74.15.15.25.53.53.53.83.81.9
Percentage of Assets us-gaap:CustomerRelationships0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:Databases


Intangible
Period End2021-06-302021-03-312020-12-31
Value144148115
Percentage of IntangibleAssetsNetExcludingGoodwill8.18.26.3
Percentage of Assets1.11.20.9
Percentage of Assets us-gaap:Databases0.00.00.0

us-gaap:OtherIntangibleAssets


Intangible
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value111113913614014546484837382826282829171718181920202021222322226.16.45.46.27.18.08.99.61011161717
Percentage of IntangibleAssetsNetExcludingGoodwill0.60.67.67.98.28.53.13.33.32.42.51.91.71.71.81.86.06.06.16.06.16.17.06.86.86.96.86.37.12.92.92.73.13.33.53.84.04.34.510.810.710.6
Percentage of Assets0.10.11.11.21.21.30.40.50.50.40.40.30.30.30.30.40.30.30.30.40.40.40.40.40.40.50.50.40.50.10.10.10.20.20.20.20.30.40.40.70.70.7
Percentage of Assets us-gaap:OtherIntangibleAssets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:TradeNames


Intangible
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312010-12-31
Value11812012311711511812011911911912112312713513413654535556585956586060636368181916161718181818199.6
Percentage of IntangibleAssetsNetExcludingGoodwill6.66.66.76.86.86.98.08.28.07.87.78.18.38.28.38.319.018.518.718.318.318.018.818.818.718.518.318.222.28.88.88.58.48.27.97.87.87.67.55.7
Percentage of Assets0.91.01.01.01.01.01.21.31.21.31.31.51.51.51.61.60.81.01.01.11.21.21.11.21.21.21.41.31.40.40.40.40.40.40.50.50.60.60.70.4
Percentage of Assets us-gaap:TradeNames0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:TradeSecrets


Intangible
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value1.01.01.02.01.01.41.51.61.61.81.82.02.12.63.13.74.35.05.66.36.67.48.28.89.71011111213131415161617171819202016
Percentage of IntangibleAssetsNetExcludingGoodwill0.10.10.10.10.10.10.10.10.10.10.10.10.10.21.11.31.51.61.81.92.22.42.52.72.83.03.65.55.76.76.96.96.86.97.06.97.112.011.611.912.116.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.10.10.10.10.10.10.20.20.20.20.20.20.30.30.30.40.40.40.40.60.60.60.70.70.80.80.8
Percentage of Assets us-gaap:TradeSecrets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Finite Lived Intangible Assets Net

us-gaap:FiniteLivedIntangibleAssetsNet

us-gaap:FiniteLivedIntangibleAssetsNet


Finite
Period End2021-06-302021-03-312020-12-312020-09-30
Value1784181018241717
Percentage of FiniteLivedIntangibleAssetsNet100.0100.0100.0100.0
Percentage of Assets14.214.514.714.7

Operating Lease Right Of Use Asset

us-gaap:OperatingLeaseRightOfUseAsset

us-gaap:OperatingLeaseRightOfUseAsset


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value357375393410429437456464476508
Percentage of OperatingLeaseRightOfUseAsset100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets2.83.03.23.53.83.94.44.95.05.3

us-gaap:OperatingLeaseRightOfUseAsset us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:PropertyPlantAndEquipmentByType

us-gaap:FairValueInputsLevel3, us-gaap:RealEstate


Operating
Period End2020-12-312019-12-312019-09-302019-06-30
Value10.0181717
Percentage of OperatingLeaseRightOfUseAsset2.53.93.83.7
Percentage of Assets0.10.20.20.2
Percentage of Assets us-gaap:FairValueInputsLevel3 us-gaap:RealEstate0.00.00.00.0

us-gaap:OperatingLeaseRightOfUseAsset us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:RestructuringPlan

us-gaap:FairValueInputsLevel3, mco:A2020RestructuringProgram


Operating
Period End2020-09-30
Value10.0
Percentage of OperatingLeaseRightOfUseAsset2.4
Percentage of Assets0.1
Percentage of Assets us-gaap:FairValueInputsLevel3 mco:A2020RestructuringProgram0.0

Other Assets Noncurrent

us-gaap:OtherAssetsNoncurrent

us-gaap:OtherAssetsNoncurrent


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value55654551546856159438942531732127424325925815916817016611215415816216017315516614514214710611293891009610410090826158525550
Percentage of OtherAssetsNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets4.44.44.24.05.05.33.84.53.33.42.92.93.02.91.92.02.63.12.13.13.13.23.13.63.13.43.12.83.12.42.62.32.42.62.42.93.43.02.92.42.12.12.22.5

Equity Securities Fv Ni

us-gaap:EquitySecuritiesFvNi

us-gaap:EquitySecuritiesFvNi


Equity
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302018-12-31
Value6055605046393.07.71533
Percentage of EquitySecuritiesFvNi100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.50.40.50.40.40.30.00.10.20.3

us-gaap:EquitySecuritiesFvNi us-gaap:FairValueByFairValueHierarchyLevel

us-gaap:FairValueInputsLevel1


Equity
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302018-12-31
Value6055605046393.07.71533
Percentage of EquitySecuritiesFvNi100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.50.40.50.40.40.30.00.10.20.3
Percentage of Assets us-gaap:FairValueInputsLevel10.00.00.00.00.00.00.00.00.00.0

us-gaap:EquitySecuritiesFvNi us-gaap:FinancialInstrument

us-gaap:CertificatesOfDeposit


Equity
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302018-12-31
Value163914301387112812769714364371022
Percentage of EquitySecuritiesFvNi2980.02383.32774.02452.23271.832366.75666.22897.43070.3
Percentage of Assets13.111.511.910.011.39.54.64.610.7
Percentage of Assets us-gaap:CertificatesOfDeposit0.00.00.00.00.00.00.00.00.0

us-gaap:MutualFund


Equity
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-31
Value55605046393.0
Percentage of EquitySecuritiesFvNi100.0100.0100.0100.0100.0100.0
Percentage of Assets0.40.50.40.40.30.0
Percentage of Assets us-gaap:MutualFund0.00.00.00.00.00.0

Other Assets

us-gaap:OtherAssets us-gaap:FinancialInstrument

us-gaap:OtherAssets

us-gaap:CertificatesOfDeposit


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-31
Value23126.07.03.01310.0205.67.72.3111.0
Percentage of OtherAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.20.10.00.10.00.10.10.20.10.10.00.10.0
Percentage of Assets us-gaap:CertificatesOfDeposit0.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:MutualFund


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-31
Value6055605043360.0
Percentage of OtherAssets260.9458.31000.0714.31433.3276.90.0
Percentage of Assets0.50.40.50.40.40.30.0
Percentage of Assets us-gaap:MutualFund0.00.00.00.00.00.00.0

Accounts Payable And Accrued Liabilities Current

us-gaap:AccountsPayableAndAccruedLiabilitiesCurrent

us-gaap:AccountsPayableAndAccruedLiabilitiesCurrent


Accounts
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value81682810397127956647736075885376955815935327505774903921444450453391566409422379557420430312538337312355555362300302452311302273414317
Percentage of AccountsPayableAndAccruedLiabilitiesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets6.56.68.46.17.05.97.56.46.15.67.36.96.85.98.77.07.57.227.19.09.07.711.18.68.47.611.98.49.07.212.38.18.29.114.09.910.110.115.712.311.010.916.315.8

Accounts Payable Current

us-gaap:AccountsPayableCurrent

us-gaap:AccountsPayableCurrent


Accounts
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-312009-12-31
Value18213926362638144.91930162232212925242828351422171621191720161610.014161414181616168.6147.1
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 Assets0.10.20.30.20.30.20.40.20.10.20.30.20.30.40.30.40.40.40.50.60.70.30.40.40.30.40.40.40.40.40.40.20.40.40.40.40.60.60.60.70.30.60.4

Accrued Income Taxes Current

us-gaap:AccruedIncomeTaxesCurrent

us-gaap:AccruedIncomeTaxesCurrent


Accrued
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-312009-12-31
Value1081561289719991735675657179858679495340167.92141111223501622330.4473.62.45.956221812233.0122620
Percentage of AccruedIncomeTaxesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.91.21.00.81.80.80.70.60.80.70.70.91.01.00.90.60.80.70.30.20.40.80.20.30.51.00.30.40.70.01.10.10.10.21.40.60.60.40.80.10.41.11.0

Contract With Customer Liability Current

us-gaap:ContractWithCustomerLiabilityCurrent

us-gaap:ContractWithCustomerLiabilityCurrent


Contract
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value1142123210899181001111310508559521062953771860998883
Percentage of ContractWithCustomerLiabilityCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets9.19.98.87.98.99.810.29.09.911.210.09.19.811.110.3

us-gaap:ContractWithCustomerLiabilityCurrent us-gaap:StatementBusinessSegments

mco:MoodysAnalytics


Contract
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value863937873681736838836622690790746537604725
Percentage of ContractWithCustomerLiabilityCurrent75.676.180.274.273.575.379.672.772.574.478.369.770.372.6
Percentage of Assets6.97.57.05.86.57.48.16.67.28.37.86.46.98.0
Percentage of Assets mco:MoodysAnalytics0.00.00.00.00.00.00.00.00.00.00.00.00.00.0

mco:MoodysInvestorsService


Contract
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value279295216237265275214233261271207233255273
Percentage of ContractWithCustomerLiabilityCurrent24.423.919.825.826.524.720.427.327.525.621.730.329.727.4
Percentage of Assets2.22.41.72.02.32.42.12.52.72.92.22.82.93.0
Percentage of Assets mco:MoodysInvestorsService0.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Dividends Payable Current

us-gaap:DividendsPayableCurrent

us-gaap:DividendsPayableCurrent


Dividends
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-312009-12-31
Value5.06.0117.06.03.07.06.05.04.06.55.64.44.86.25.34.44.5787.16.76.8786.76.33.9754.94.44.1653.93.42.5472.82.52.1381.91.92726
Percentage of DividendsPayableCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.10.10.10.00.10.10.10.00.10.10.10.10.10.10.10.11.50.10.10.11.50.10.10.11.60.10.10.11.50.10.10.11.20.10.10.11.30.10.11.11.3

Liabilities Current

us-gaap:LiabilitiesCurrent

us-gaap:LiabilitiesCurrent


Liabilities
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value205021542222172118862351191221381839200520981823184319202063198212371423242814021146115112181050112411381199104110931027114189789710131164982995101111348348528419331236
Percentage of LiabilitiesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets16.317.217.914.716.720.818.622.619.221.122.021.621.121.324.023.918.926.245.627.922.722.523.822.022.522.925.720.922.823.626.021.623.625.929.426.833.633.839.433.131.033.336.861.7

Operating Lease Liability Current

us-gaap:OperatingLeaseLiabilityCurrent

us-gaap:OperatingLeaseLiabilityCurrent


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-30
Value929494919089898989
Percentage of OperatingLeaseLiabilityCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.70.80.80.80.80.80.90.90.9

Other Accrued Liabilities Current

us-gaap:OtherAccruedLiabilitiesCurrent

us-gaap:OtherAccruedLiabilitiesCurrent


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-312009-12-31
Value102118138124146119108859381959176788277816164958873707877666079879571574354464346786049545262
Percentage of OtherAccruedLiabilitiesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.80.91.11.11.31.11.10.91.00.91.01.10.90.91.00.91.21.11.21.91.81.41.41.61.61.31.31.61.82.21.61.41.21.41.21.21.62.62.12.02.02.13.1

Long Term Debt

us-gaap:LongTermDebt

us-gaap:LongTermDebt


Long
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302015-12-31
Value635563406422636363336303558152385258522856764929523454175410540648873861336334183393
Percentage of LongTermDebt100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets50.650.751.854.556.155.754.455.354.854.959.658.459.860.163.065.174.871.063.168.166.2

us-gaap:LongTermDebt us-gaap:LongtermDebtType

mco:A950SeniorNotesDueTwoThousandAndThirty


Long
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-31
Value880872909870833814833
Percentage of LongTermDebt13.813.814.213.713.212.914.9
Percentage of Assets7.07.07.37.57.47.28.1
Percentage of Assets mco:A950SeniorNotesDueTwoThousandAndThirty0.00.00.00.00.00.00.0

mco:TwentyThirteenSeniorNotes


Long
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302015-12-31
Value498498498498498498497496496496496496496495495495495495495495494
Percentage of LongTermDebt7.87.97.87.87.97.98.99.59.49.58.710.19.59.29.29.210.112.814.714.514.6
Percentage of Assets4.04.04.04.34.44.44.85.25.25.25.25.95.75.55.86.07.69.19.39.99.7
Percentage of Assets mco:TwentyThirteenSeniorNotes0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

mco:TwoThousandAndFifteenSeniorNotesDueTwoThousandAndTwentySeven


Long
Period End2021-06-302021-03-312020-12-312020-06-302019-12-31
Value591586610559558
Percentage of LongTermDebt9.39.29.58.810.0
Percentage of Assets4.74.74.94.95.4
Percentage of Assets mco:TwoThousandAndFifteenSeniorNotesDueTwoThousandAndTwentySeven0.00.00.00.00.0

mco:TwoThousandAndTwentySeniorNoteDueTwoThousandAndTwentyFive


Long
Period End2021-06-302021-03-312020-12-312020-09-302020-06-30
Value690689693693694
Percentage of LongTermDebt10.910.910.810.911.0
Percentage of Assets5.55.55.65.96.1
Percentage of Assets mco:TwoThousandAndTwentySeniorNoteDueTwoThousandAndTwentyFive0.00.00.00.00.0

mco:TwoThousandEighteenSeniorNoteDueTwoThousandFourtyEight


Long
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value390390390389389389389389389389389
Percentage of LongTermDebt6.16.26.16.16.16.27.07.47.47.46.9
Percentage of Assets3.13.13.13.33.43.43.84.14.14.14.1
Percentage of Assets mco:TwoThousandEighteenSeniorNoteDueTwoThousandFourtyEight0.00.00.00.00.00.00.00.00.00.00.0

mco:TwoThousandEighteenSeniorNoteDueTwoThousandTwentyNine


Long
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value395395394395394394394394394393393
Percentage of LongTermDebt6.26.26.16.26.26.37.17.57.57.56.9
Percentage of Assets3.13.23.23.43.53.53.84.24.14.14.1
Percentage of Assets mco:TwoThousandEighteenSeniorNoteDueTwoThousandTwentyNine0.00.00.00.00.00.00.00.00.00.00.0

mco:TwoThousandFourteenSeniorNotesThirtyYear


Long
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302015-12-31
Value598598598599599598599597597597597597597597597597597597597597600
Percentage of LongTermDebt9.49.49.39.49.59.510.711.411.411.410.512.111.411.011.011.112.215.517.817.517.7
Percentage of Assets4.84.84.85.15.35.35.86.36.26.36.37.16.86.67.07.29.111.011.211.911.7
Percentage of Assets mco:TwoThousandFourteenSeniorNotesThirtyYear0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

mco:TwoThousandNineteenSeniorNoteDueTwoThousandThirty


Long
Period End2020-12-312019-12-31
Value909833
Percentage of LongTermDebt14.214.9
Percentage of Assets7.38.1
Percentage of Assets mco:TwoThousandNineteenSeniorNoteDueTwoThousandThirty0.00.0

mco:TwoThousandSeventeenFiveYearPrivatePlacementDueTwoThosandTwentyEight


Long
Period End2020-12-312020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value524528524493492492491491491491491490490490
Percentage of LongTermDebt8.28.38.38.89.49.49.48.710.09.49.19.19.110.0
Percentage of Assets4.24.74.64.85.25.15.25.25.85.65.45.75.97.5
Percentage of Assets mco:TwoThousandSeventeenFiveYearPrivatePlacementDueTwoThosandTwentyEight0.00.00.00.00.00.00.00.00.00.00.00.00.00.0

mco:TwoThousandSeventeenFiveYearPrivatePlacementDueTwoThosandTwentyThree


Long
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value508509510510512512504505503499496496495495495495495
Percentage of LongTermDebt8.08.07.98.08.18.19.09.69.69.58.710.19.59.19.29.210.1
Percentage of Assets4.04.14.14.44.54.54.95.35.35.25.25.95.75.55.86.07.6
Percentage of Assets mco:TwoThousandSeventeenFiveYearPrivatePlacementDueTwoThosandTwentyThree0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

mco:TwoThousandSeventeenSeniorNotesDueTwoThousandTwentyEight


Long
Period End2021-06-302021-03-312020-12-312020-09-302019-12-31
Value511509524527493
Percentage of LongTermDebt8.08.08.28.38.8
Percentage of Assets4.14.14.24.54.8
Percentage of Assets mco:TwoThousandSeventeenSeniorNotesDueTwoThousandTwentyEight0.00.00.00.00.0

mco:TwoThousandSeventeenSeniorNotesDueTwoThousandTwentyOne


Long
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value584518520508511510503500493496495
Percentage of LongTermDebt9.28.28.39.19.89.79.68.810.09.59.2
Percentage of Assets5.04.64.64.95.45.35.35.35.95.75.8
Percentage of Assets mco:TwoThousandSeventeenSeniorNotesDueTwoThousandTwentyOne0.00.00.00.00.00.00.00.00.00.00.0

mco:TwoThousandTwelveSeniorNotesDueTwoThousandTwentyTwo


Long
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-31
Value510510512514516516507
Percentage of LongTermDebt8.08.08.08.18.18.29.1
Percentage of Assets4.14.14.14.44.64.64.9
Percentage of Assets mco:TwoThousandTwelveSeniorNotesDueTwoThousandTwentyTwo0.00.00.00.00.00.00.0

Long Term Debt Noncurrent

us-gaap:LongTermDebtNoncurrent

us-gaap:LongTermDebtNoncurrent


Long
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value6355634064226363633363035581473652585228522644844934511851115107488738613063311834203428340131243106309525472536210420972101209816051610160716111110113711721200122812211228746
Percentage of LongTermDebtNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets50.650.751.854.556.155.754.450.054.854.954.953.156.456.859.561.574.871.057.562.167.867.066.465.562.162.254.650.844.048.247.850.542.341.240.644.037.538.040.847.644.748.448.437.2

Deferred Income Tax Liabilities Net

us-gaap:DeferredIncomeTaxLiabilitiesNet

us-gaap:DeferredIncomeTaxLiabilitiesNet


Deferred
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302018-12-31
Value422404404385414424357355351
Percentage of DeferredIncomeTaxLiabilitiesNet100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets3.43.23.33.33.73.83.53.83.7

Pension And Other Postretirement Defined Benefit Plans Liabilities Noncurrent

us-gaap:PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent

us-gaap:PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent


Pension
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-312009-12-31
Value211249244214197196299264265256249252260256244268259272264256248270228230245251244166161170164212206219213194189192187129132132112
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 Assets1.72.02.01.81.71.72.92.82.82.72.63.03.02.82.83.24.05.05.05.14.95.34.54.84.95.05.23.33.43.93.75.15.55.65.45.36.46.46.55.24.85.25.6

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

country:US, us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Pension
Period End2020-12-312019-12-312018-12-31
Value474131
Percentage of PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent19.313.712.4
Percentage of Assets0.40.40.3
Percentage of Assets country:US us-gaap:OtherPostretirementBenefitPlansDefinedBenefit0.00.00.0

country:US, us-gaap:PensionPlansDefinedBenefit


Pension
Period End2020-12-312019-12-312018-12-31
Value112188155
Percentage of PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent45.962.962.2
Percentage of Assets0.91.81.6
Percentage of Assets country:US us-gaap:PensionPlansDefinedBenefit0.00.00.0

Minority Interest

us-gaap:MinorityInterest

us-gaap:MinorityInterest


Minority
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-31
Value1941951941911912172192242212011962062172202122122122021972062302302322292272272302292288.010109.27.811109.28.5109.89.58.711108.27.610
Percentage of MinorityInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets1.51.61.61.61.71.92.12.42.32.12.12.42.52.42.52.63.23.73.74.14.64.54.54.84.64.64.94.64.80.20.20.30.20.20.30.30.30.30.40.40.30.30.40.00.00.00.5

Other Liabilities Noncurrent

us-gaap:OtherLiabilitiesNoncurrent

us-gaap:OtherLiabilitiesNoncurrent


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value460473590498418403504492491486576574625554664447426434425412404422417417441444430348354355360426412421410386395405404357363362362317
Percentage of OtherLiabilitiesNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets3.73.84.84.33.73.64.95.25.15.16.16.87.26.17.75.46.58.08.08.28.08.38.18.78.88.99.27.07.48.28.210.310.910.810.410.513.313.614.114.213.214.314.315.9

Operating Lease Liability Noncurrent

us-gaap:OperatingLeaseLiabilityNoncurrent

us-gaap:OperatingLeaseLiabilityNoncurrent


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value386406427439451463485495510523
Percentage of OperatingLeaseLiabilityNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets3.13.23.43.84.04.14.75.25.35.5

Lessee Operating Lease Liability Payments Due Year Two

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearTwo

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearTwo


Lessee
Period End2021-06-302021-03-312020-12-312020-09-30
Value94949996
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearTwo100.0100.0100.0100.0
Percentage of Assets0.70.80.80.8

Lessee Operating Lease Liability Payments Due Year Three

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearThree

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearThree


Lessee
Period End2021-06-302021-03-312020-12-312020-09-30
Value85859390
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearThree100.0100.0100.0100.0
Percentage of Assets0.70.70.70.8

Lessee Operating Lease Liability Payments Due Year Four

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFour

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFour


Lessee
Period End2021-06-302021-03-312020-12-312020-09-30
Value77778481
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearFour100.0100.0100.0100.0
Percentage of Assets0.60.60.70.7

Lessee Operating Lease Liability Payments Due Year Five

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFive

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFive


Lessee
Period End2020-12-31
Value76
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearFive100.0
Percentage of Assets0.6

Lessee Operating Lease Liability Payments Due After Year Five

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive


Lessee
Period End2020-12-31
Value117
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive100.0
Percentage of Assets0.9

Operating Lease Liability

us-gaap:OperatingLeaseLiability

us-gaap:OperatingLeaseLiability


Operating
Period End2021-06-302021-03-312020-12-312020-09-302019-12-31
Value478500521530574
Percentage of OperatingLeaseLiability100.0100.0100.0100.0100.0
Percentage of Assets3.84.04.24.55.6

Lessee Operating Lease Liability Payments Due

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDue

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDue


Lessee
Period End2021-06-302021-03-312020-12-312020-09-30
Value528554579592
Percentage of LesseeOperatingLeaseLiabilityPaymentsDue100.0100.0100.0100.0
Percentage of Assets4.24.44.75.1

Lessee Operating Lease Liability Undiscounted Excess Amount

us-gaap:LesseeOperatingLeaseLiabilityUndiscountedExcessAmount

us-gaap:LesseeOperatingLeaseLiabilityUndiscountedExcessAmount


Lessee
Period End2021-06-302021-03-312020-12-312020-09-30
Value50545862
Percentage of LesseeOperatingLeaseLiabilityUndiscountedExcessAmount100.0100.0100.0100.0
Percentage of Assets0.40.40.50.5

Stockholders Equity

us-gaap:StockholdersEquity

us-gaap:StockholdersEquity


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value21862030156914971041582612472352123459400242199-327.7-369.1-679.8-927.1-1225.0-564.5-600.0-581.6-565.0-469.9-331.2-373.7-187.82504453853372814474573853119982-169.0-184.0-26.1-231.9-309.6-606.2
Percentage of StockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets17.416.212.612.89.25.16.05.03.71.34.84.72.82.2-3.8-4.4-10.4-17.1-23.0-11.2-11.9-11.4-11.0-9.8-6.6-7.5-4.05.09.38.97.76.811.811.79.78.53.32.8-5.9-7.3-1.0-9.2-12.2-30.3

us-gaap:StockholdersEquity us-gaap:StatementEquityComponents

mco:AccumulatedNetInvestmentHedgesGainLossAttributabletoParent


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-312016-12-31
Value-117.0-88.0-220.0-73.07014354126255433-1.035
Percentage of StockholdersEquity-5.4-4.3-14.0-4.96.724.68.826.77.143.87.20.3-2.9
Percentage of Assets-0.9-0.7-1.8-0.60.61.30.51.30.30.60.3-0.00.7
Percentage of Assets mco:AccumulatedNetInvestmentHedgesGainLossAttributabletoParent0.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AccumulatedDefinedBenefitPlansAdjustment


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-312016-12-31
Value-108.0-116.0-118.0-89.0-84.0-92.0-92.0-69.0-70.0-69.0-53.0-61.0-79.0
Percentage of StockholdersEquity-4.9-5.7-7.5-5.9-8.1-15.8-15.0-14.6-19.8-56.0-11.518.66.4
Percentage of Assets-0.9-0.9-1.0-0.8-0.7-0.8-0.9-0.7-0.7-0.7-0.6-0.7-1.5
Percentage of Assets us-gaap:AccumulatedDefinedBenefitPlansAdjustment0.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AccumulatedGainLossNetCashFlowHedgeParent


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-06-302019-03-312018-12-312017-12-312016-12-31
Value-48.0-48.0-49.0-49.0-49.0-35.00.00.00.00.01.02.0
Percentage of StockholdersEquity-2.2-2.4-3.1-3.3-4.7-6.00.00.00.00.0-0.3-0.2
Percentage of Assets-0.4-0.4-0.4-0.4-0.4-0.30.00.00.00.00.00.0
Percentage of Assets us-gaap:AccumulatedGainLossNetCashFlowHedgeParent0.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AccumulatedOtherComprehensiveIncome


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-312016-12-31
Value-425.0-440.0-432.0-504.0-542.0-554.0-439.0-537.0-446.0-455.0-426.0-172.0-364.0
Percentage of StockholdersEquity-19.4-21.7-27.5-33.7-52.1-95.2-71.7-113.6-126.4-369.3-92.652.529.7
Percentage of Assets-3.4-3.5-3.5-4.3-4.8-4.9-4.3-5.7-4.6-4.8-4.5-2.0-6.8
Percentage of Assets us-gaap:AccumulatedOtherComprehensiveIncome0.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AccumulatedTranslationAdjustment


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-312016-12-31
Value-152.0-188.0-45.0-293.0-479.0-570.0-401.0-594.0-401.0-440.0-406.0-113.0-325.0
Percentage of StockholdersEquity-7.0-9.3-2.9-19.6-46.0-97.9-65.5-125.7-113.7-357.1-88.334.526.5
Percentage of Assets-1.2-1.5-0.4-2.5-4.2-5.0-3.9-6.3-4.2-4.6-4.3-1.3-6.1
Percentage of Assets us-gaap:AccumulatedTranslationAdjustment0.00.00.00.00.00.00.00.00.00.00.00.00.0

Stockholders Equity Including Portion Attributable To Noncontrolling Interest

us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest

us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-312008-12-312007-12-31
Value23802225176316881232799831697574325656606460420-114.9-156.8-467.5-724.2-1027.3-357.9-369.5-351.5-333.0-240.2-103.4-146.24248067339334729145646439632210891-158.4-174.2-16.6-223.2-298.4-596.1-986.1-771.9
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets19.017.814.214.510.97.18.17.46.03.46.97.25.34.7-1.3-1.9-7.2-13.3-19.3-7.1-7.3-6.9-6.5-5.0-2.1-2.90.99.614.19.07.97.012.011.910.08.83.73.0-5.5-6.9-0.6-8.8-11.7-29.80.00.0

us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest us-gaap:StatementEquityComponents

us-gaap:AccumulatedOtherComprehensiveIncome


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-312008-12-312007-12-31
Value-425.0-440.0-432.0-504.0-542.0-554.0-439.0-537.3-446.1-455.5-426.3-342.0-304.8-51.9-172.2-364.9-235.2-235.2-54.6-82.1-107.5-33.4-41.2-52.115
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest-17.9-19.8-24.5-29.9-44.0-69.3-52.8-77.1-77.6-140.2-64.9-56.4-66.2-12.4149.935.570.6-548.3-15.7-20.767.911.26.95.3-2.0
Percentage of Assets-3.4-3.5-3.5-4.3-4.8-4.9-4.3-5.7-4.7-4.8-4.5-4.1-3.5-0.6-2.0-6.8-4.6-5.0-1.2-2.1-3.7-1.3-2.10.00.0
Percentage of Assets us-gaap:AccumulatedOtherComprehensiveIncome0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AdditionalPaidInCapital


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-312008-12-312007-12-31
Value784739735699651616642607574435600569538506528477451383405365394391391392387
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest32.933.241.741.452.877.177.387.2100.0134.191.594.0117.1120.6-460.1-46.5-135.5894.9116.692.1-249.1-131.2-65.6-39.8-50.3
Percentage of Assets6.25.95.96.05.85.46.36.46.04.66.36.86.25.66.29.08.88.29.29.213.715.419.50.00.0
Percentage of Assets us-gaap:AdditionalPaidInCapital0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:CommonStock


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-312008-12-312007-12-31
Value3.03.03.03.03.03.03.03.43.43.43.43.43.43.43423.43.43.43.43.43.43.43.43.43.4
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest0.10.10.20.20.20.40.40.50.61.00.50.60.70.8-298.4-0.3-1.07.91.00.9-2.1-1.1-0.6-0.3-0.4
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.04.00.10.10.10.10.10.10.10.20.00.0
Percentage of Assets us-gaap:CommonStock0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:NoncontrollingInterest


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-312008-12-312007-12-31
Value19419519419119121721922422120119620621722021219723023010111011108.311
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest8.28.811.011.315.527.226.432.238.662.129.934.047.252.5-185.2-19.2-69.3537.83.12.9-6.7-3.8-1.7-0.8-1.5
Percentage of Assets1.51.61.61.61.71.92.12.42.32.12.12.42.52.42.53.74.54.90.20.30.40.40.50.00.0
Percentage of Assets us-gaap:NoncontrollingInterest0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:Parent


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-31
Value21862030156914971041582612472352123459400242199-327.7-1225.0-565.0-187.8337385-169.0-309.6-606.2
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest91.891.289.088.784.572.873.667.861.437.970.166.052.847.5285.2119.2169.7-437.896.997.1106.7103.8101.7
Percentage of Assets17.416.212.612.89.25.16.05.03.71.34.84.72.82.2-3.8-23.0-11.0-4.07.79.7-5.9-12.2-30.3
Percentage of Assets us-gaap:Parent0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:RetainedEarnings


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-312008-12-312007-12-31
Value1209411632110111080410442100419656939191078893859484298204791374656688670960445302471341763736332930232661
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest508.2522.8624.6640.0847.61256.71162.01346.91584.82736.51309.11390.71783.21884.0-6497.3-651.1-2014.714089.31524.01188.4-2636.4-1252.1-558.5-306.6-344.7
Percentage of Assets96.493.188.792.692.488.894.199.195.093.490.299.993.787.886.9125.6130.9129.5120.6119.0145.2147.1166.20.00.0
Percentage of Assets us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:TreasuryStock


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-312008-12-312007-12-31
Value-10270.0-9904.0-9748.0-9505.0-9513.0-9524.0-9250.0-8993.0-8886.7-8754.0-8312.5-8260.1-8198.9-8171.4-8152.9-8029.6-7389.2-6384.2-5319.7-4614.5-4635.5-4407.3-4288.5-4361.6-3851.6
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest-431.5-445.1-552.9-563.1-772.2-1192.0-1113.1-1289.7-1546.3-2693.5-1266.2-1362.8-1782.0-1945.67095.6781.62219.0-14881.6-1529.1-1163.52926.51477.0719.4442.3499.0
Percentage of Assets-81.8-79.2-78.6-81.4-84.2-84.2-90.1-94.9-92.7-92.0-87.3-97.9-93.7-90.7-94.9-150.7-144.2-136.7-121.0-116.5-161.2-173.5-214.10.00.0
Percentage of Assets us-gaap:TreasuryStock0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Common Stock Value

us-gaap:CommonStockValue

us-gaap:CommonStockValue


Common
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value3000000.03000000.03000000.03000000.03000000.03000000.03000000.03400000.03400000.03400000.03400000.03400000.03400000.03400000.03400000.0
Percentage of CommonStockValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Additional Paid In Capital Common Stock

us-gaap:AdditionalPaidInCapitalCommonStock

us-gaap:AdditionalPaidInCapitalCommonStock


Additional
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value784739735699651616642607574435600569538506528495465447477450457431451424396370383402385371405377358342365375367357394386369367391391
Percentage of AdditionalPaidInCapitalCommonStock100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets6.25.95.96.05.85.46.36.46.04.66.36.86.25.66.26.07.18.29.09.09.18.48.88.97.97.48.28.18.08.59.29.19.58.89.210.312.411.913.715.313.414.515.419.5

Retained Earnings Accumulated Deficit

us-gaap:RetainedEarningsAccumulatedDeficit

us-gaap:RetainedEarningsAccumulatedDeficit


Retained
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value12094116321101110804104421004196569391910788938594842982047913746575137269703166887261707768956709663164686276604459365780552153025210508249024713463444864350417641474048389237363329
Percentage of RetainedEarningsAccumulatedDeficit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets96.493.188.792.692.488.894.199.195.093.490.299.993.787.886.990.5111.2129.3125.6144.7140.3134.8130.9138.9129.4126.1129.5118.9120.8126.8120.6125.4133.9125.3119.0126.5151.4145.3145.2164.5147.5154.2147.1166.2

Accumulated Other Comprehensive Income Loss Net Of Tax

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax


Accumulated
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-06-262014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value-425.0-440.0-432.0-504.0-542.0-554.0-439.0-537.3-446.1-455.5-426.3-342.0-304.8-51.9-172.2-257.8-309.7-357.3-364.9-305.7-316.8-301.5-339.5-320.3-280.8-322.4-235.2-133.6-47.3-47.3-61.3-54.6-100.2-149.9-138.8-82.1-85.8-120.8-78.7-107.5-70.51.5-9.4-33.4-41.2
Percentage of AccumulatedOtherComprehensiveIncomeLossNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets-3.4-3.5-3.5-4.3-4.8-4.9-4.3-5.7-4.7-4.8-4.5-4.1-3.5-0.6-2.0-3.1-4.7-6.6-6.8-6.1-6.3-5.9-6.6-6.7-5.6-6.5-5.0-2.7-1.00.0-1.4-1.2-2.4-4.0-3.5-2.1-2.3-4.1-2.6-3.7-2.80.1-0.4-1.3-2.1

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax us-gaap:DerivativeInstrumentRisk, us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship

us-gaap:CurrencySwap, us-gaap:CashFlowHedging


Accumulated
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302018-12-31
Value2.02.02.02.02.02.02.52.62.5
Percentage of AccumulatedOtherComprehensiveIncomeLossNetOfTax-0.5-0.5-0.4-0.4-0.4-0.5-0.5-0.6-0.6
Percentage of Assets0.00.00.00.00.00.00.00.00.0
Percentage of Assets us-gaap:CurrencySwap us-gaap:CashFlowHedging0.00.00.00.00.00.00.00.00.0

us-gaap:CurrencySwap, us-gaap:NetInvestmentHedging


Accumulated
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302018-12-31
Value-52.0-124.0-40.05810741877.812
Percentage of AccumulatedOtherComprehensiveIncomeLossNetOfTax11.828.77.9-10.7-19.3-9.3-16.3-1.7-2.9
Percentage of Assets-0.4-1.0-0.30.50.90.40.90.10.1
Percentage of Assets us-gaap:CurrencySwap us-gaap:NetInvestmentHedging0.00.00.00.00.00.00.00.00.0

us-gaap:ForeignExchangeForward, us-gaap:NetInvestmentHedging


Accumulated
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302018-12-31
Value271227262626272323
Percentage of AccumulatedOtherComprehensiveIncomeLossNetOfTax-6.1-2.8-5.4-4.8-4.7-5.9-5.1-5.3-5.5
Percentage of Assets0.20.10.20.20.20.30.30.20.2
Percentage of Assets us-gaap:ForeignExchangeForward us-gaap:NetInvestmentHedging0.00.00.00.00.00.00.00.00.0

us-gaap:InterestRateContract, us-gaap:CashFlowHedging


Accumulated
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302018-12-31
Value-50.0-51.0-51.0-51.0-37.0-2.0-2.3-2.4-2.4
Percentage of AccumulatedOtherComprehensiveIncomeLossNetOfTax11.411.810.19.46.70.50.40.50.6
Percentage of Assets-0.4-0.4-0.4-0.5-0.3-0.0-0.0-0.0-0.0
Percentage of Assets us-gaap:InterestRateContract us-gaap:CashFlowHedging0.00.00.00.00.00.00.00.00.0

us-gaap:LongTermDebt, us-gaap:NetInvestmentHedging


Accumulated
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302018-12-31
Value-63.0-108.0-60.0-14.010.0-13.011-6.8-3.1
Percentage of AccumulatedOtherComprehensiveIncomeLossNetOfTax14.325.011.92.6-1.83.0-2.11.50.7
Percentage of Assets-0.5-0.9-0.5-0.10.1-0.10.1-0.1-0.0
Percentage of Assets us-gaap:LongTermDebt us-gaap:NetInvestmentHedging0.00.00.00.00.00.00.00.00.0

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

us-gaap:CurrencySwap, us-gaap:NetInvestmentHedging, us-gaap:DesignatedAsHedgingInstrument


Accumulated
Period End2021-06-302020-12-312019-12-31
Value-70.0-124.041
Percentage of AccumulatedOtherComprehensiveIncomeLossNetOfTax16.528.7-9.3
Percentage of Assets-0.6-1.00.4
Percentage of Assets us-gaap:CurrencySwap us-gaap:NetInvestmentHedging us-gaap:DesignatedAsHedgingInstrument0.00.00.0

us-gaap:ForeignExchangeForward, us-gaap:NetInvestmentHedging, us-gaap:DesignatedAsHedgingInstrument


Accumulated
Period End2021-06-302020-12-312019-12-31
Value271226
Percentage of AccumulatedOtherComprehensiveIncomeLossNetOfTax-6.4-2.8-5.9
Percentage of Assets0.20.10.3
Percentage of Assets us-gaap:ForeignExchangeForward us-gaap:NetInvestmentHedging us-gaap:DesignatedAsHedgingInstrument0.00.00.0

us-gaap:InterestRateContract, us-gaap:CashFlowHedging, us-gaap:DesignatedAsHedgingInstrument


Accumulated
Period End2021-06-302020-12-312019-12-31
Value-50.0-51.0-2.0
Percentage of AccumulatedOtherComprehensiveIncomeLossNetOfTax11.811.80.5
Percentage of Assets-0.4-0.4-0.0
Percentage of Assets us-gaap:InterestRateContract us-gaap:CashFlowHedging us-gaap:DesignatedAsHedgingInstrument0.00.00.0

us-gaap:LongTermDebt, us-gaap:NetInvestmentHedging, us-gaap:DesignatedAsHedgingInstrument


Accumulated
Period End2021-06-302020-12-312019-12-31
Value-73.0-108.0-13.0
Percentage of AccumulatedOtherComprehensiveIncomeLossNetOfTax17.225.03.0
Percentage of Assets-0.6-0.9-0.1
Percentage of Assets us-gaap:LongTermDebt us-gaap:NetInvestmentHedging us-gaap:DesignatedAsHedgingInstrument0.00.00.0

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship

us-gaap:CashFlowHedging


Accumulated
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302016-12-312015-12-31
Value-48.0-49.0-49.0-49.0-35.00.00.20.20.10.12.12.22.30.91.10.51.7-1.1
Percentage of AccumulatedOtherComprehensiveIncomeLossNetOfTax10.911.39.79.06.3-0.0-0.0-0.0-0.0-0.0-0.6-0.7-4.4-0.5-0.4-0.2-0.50.3
Percentage of Assets-0.4-0.4-0.4-0.4-0.30.00.00.00.00.00.00.00.00.00.00.00.0-0.0
Percentage of Assets us-gaap:CashFlowHedging0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:NetInvestmentHedging


Accumulated
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-06-302018-03-312017-12-31
Value-88.0-220.0-73.0701435412624533215-12.2-1.3
Percentage of AccumulatedOtherComprehensiveIncomeLossNetOfTax20.050.914.5-12.9-25.8-12.3-23.5-5.5-11.8-7.7-5.023.50.8
Percentage of Assets-0.7-1.8-0.60.61.30.51.30.30.60.30.2-0.1-0.0
Percentage of Assets us-gaap:NetInvestmentHedging0.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship, us-gaap:HedgingDesignation

us-gaap:CashFlowHedging, us-gaap:DesignatedAsHedgingInstrument


Accumulated
Period End2021-06-302020-12-31
Value-48.0-49.0
Percentage of AccumulatedOtherComprehensiveIncomeLossNetOfTax11.311.3
Percentage of Assets-0.4-0.4
Percentage of Assets us-gaap:CashFlowHedging us-gaap:DesignatedAsHedgingInstrument0.00.0

us-gaap:NetInvestmentHedging, us-gaap:DesignatedAsHedgingInstrument


Accumulated
Period End2021-06-302020-12-312019-12-31
Value-116.0-220.054
Percentage of AccumulatedOtherComprehensiveIncomeLossNetOfTax27.350.9-12.3
Percentage of Assets-0.9-1.80.5
Percentage of Assets us-gaap:NetInvestmentHedging us-gaap:DesignatedAsHedgingInstrument0.00.00.0

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax us-gaap:HedgingDesignation

us-gaap:DesignatedAsHedgingInstrument


Accumulated
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302018-12-31
Value-164.0-136.0-269.0-122.021108541262432
Percentage of AccumulatedOtherComprehensiveIncomeLossNetOfTax38.630.962.324.2-3.9-19.5-12.3-23.6-5.5-7.7
Percentage of Assets-1.3-1.1-2.2-1.00.21.00.51.30.30.3
Percentage of Assets us-gaap:DesignatedAsHedgingInstrument0.00.00.00.00.00.00.00.00.00.0

Treasury Stock Value

us-gaap:TreasuryStockValue

us-gaap:TreasuryStockValue


Treasury
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value10270990497489505951395249250899388868754831282608198817181528123810880518029797378217610738972096918-6701.76384-5957.6-5676.4544953195209484646524614461546374549463546514448448544074288
Percentage of TreasuryStockValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets81.879.278.681.484.284.290.194.992.792.087.397.993.790.794.997.8124.1148.1150.7158.9155.0148.8144.2151.1138.4-134.7136.7-119.3-118.6125.2121.0125.4127.7119.0116.5126.0156.5151.9161.2184.5162.1177.7173.5214.1

Minority Interest

us-gaap:MinorityInterest

us-gaap:MinorityInterest


Minority
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-31
Value1941951941911912172192242212011962062172202122122122021972062302302322292272272302292288.010109.27.811109.28.5109.89.58.711108.27.610
Percentage of MinorityInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets1.51.61.61.61.71.92.12.42.32.12.12.42.52.42.52.63.23.73.74.14.64.54.54.84.64.64.94.64.80.20.20.30.20.20.30.30.30.30.40.40.30.30.40.00.00.00.5

Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value

us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue

us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue


Adjustments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value4145443835373233343530303435
Percentage of AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue us-gaap:StatementEquityComponents

us-gaap:AdditionalPaidInCapital


Adjustments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value4145443835373233343530303435
Percentage of AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of Assets us-gaap:AdditionalPaidInCapital0.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:Parent


Adjustments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value4145443835373233343530303435
Percentage of AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of Assets us-gaap:Parent0.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Net Cash Provided By Used In Operating Activities

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetCashProvidedByUsedInOperatingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value594676658511632345479441387367376307385391404390464-512.436932729123726029933226130825128017727328416620232726017362137220245200178170139164
Percentage of NetCashProvidedByUsedInOperatingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax38.242.251.037.744.026.738.935.631.932.135.528.432.834.734.736.746.4-52.539.235.731.429.130.035.836.230.235.230.932.123.135.140.322.027.743.437.827.19.624.241.540.534.831.633.329.334.4

Net Cash Provided By Used In Investing Activities

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:NetCashProvidedByUsedInInvestingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value-57.0-194.0-224.0-30.0-51.0-772.0185-96.7-45.6-7.2-292.6-68.5-26.8-18.5-12.6-3447.321181044.9101-108.4-10.510-42.5-49.3-320.3-131.2-31.2-82.2-39.1-203.8-16.2-2.8-4.1-20.2-12.3-13.6-202.3-24.9-27.1-13.3-173.8-21.7-19.7-13.6
Percentage of NetCashProvidedByUsedInInvestingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-3.7-12.1-17.4-2.2-3.6-59.815.0-7.8-3.8-0.6-27.6-6.3-2.3-1.6-1.1-324.32.11.911.10.510.9-13.3-1.21.2-4.6-5.7-36.5-16.1-3.6-10.7-5.0-28.9-2.1-0.4-0.5-2.9-1.9-2.1-35.7-4.7-4.5-2.3-30.8-4.2-4.1-2.9

Net Cash Provided By Used In Financing Activities

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:NetCashProvidedByUsedInFinancingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value-502.0-290.0-354.0-120.0-642.0765-46.0-331.0-337.2-848.8568-512.6-285.3-182.3-289.5719623553-127.2-259.8-283.6-339.251-354.9-281.5123-671.1107-279.1-222.1-155.683-270.2-156.0-91.8436-135.5-7.0-25.3-239.3-8.0-145.1-136.6119-111.9-111.9
Percentage of NetCashProvidedByUsedInFinancingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-32.3-18.1-27.4-8.8-44.759.3-3.7-26.7-27.8-74.353.6-47.4-24.3-16.2-24.867.762.456.8-13.5-28.3-30.5-41.65.9-42.5-30.714.3-76.513.2-32.0-28.9-20.011.8-35.7-21.3-12.263.5-21.1-1.1-4.5-45.0-1.3-25.1-24.223.2-23.4-23.5

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

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect


Cash
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value40172105393-42.0309654-18.0-1.0-488.0649
Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax2.610.88.129.0-2.924.053.0-1.5-0.1-42.761.3

Deferred Income Tax Expense Benefit

us-gaap:DeferredIncomeTaxExpenseBenefit

us-gaap:DeferredIncomeTaxExpenseBenefit


Deferred
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-30
Value1544-43.0-47.0-11.057-15.8-19.2-16.813-23.6-63.2-7.9-4.2-73.1-32.18.5185-160.2-6.62.411-1.69.13.07.6-13.8-2.51827-14.2-23.8-2.3136.3-17.7-0.748-2.57.0
Percentage of DeferredIncomeTaxExpenseBenefit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Increase Decrease In Accounts Receivable

us-gaap:IncreaseDecreaseInAccountsReceivable

us-gaap:IncreaseDecreaseInAccountsReceivable


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value-42.07142-62.0-18.07.0169-5.5-38.98.5158-4.7-47.729138-6.7-45.46169-9.6-0.34586-72.8-50.96286-33.93.04293-24.4-27.4257116-55.596-114.6108-13.22.02376-32.3-13.5
Percentage of IncreaseDecreaseInAccountsReceivable100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Net Cash Provided By Used In Operating Activities

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetCashProvidedByUsedInOperatingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value594676658511632345479441387367376307385391404390464-512.436932729123726029933226130825128017727328416620232726017362137220245200178170139164
Percentage of NetCashProvidedByUsedInOperatingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax38.242.251.037.744.026.738.935.631.932.135.528.432.834.734.736.746.4-52.539.235.731.429.130.035.836.230.235.230.932.123.135.140.322.027.743.437.827.19.624.241.540.534.831.633.329.334.4

Net Income Loss

us-gaap:NetIncomeLoss

us-gaap:NetIncomeLoss


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-09-302009-06-302009-03-31
Value57773631446750948835937931037225031037637225317312345-428.62552551842172312612302362153192182061832251881601831721739613018915513713612111310110010990
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax37.246.024.334.435.537.829.130.625.632.723.628.732.033.12.229.931.235.4-45.527.827.522.625.227.728.526.626.926.436.528.426.526.129.825.721.226.726.926.817.024.631.226.924.326.525.323.821.022.324.322.1

us-gaap:NetIncomeLoss us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome

us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome


Net
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-30
Value-8.0-2.0-2.0-1.0-2.00.0-1.0
Percentage of NetIncomeLoss-1.4-0.3-0.4-0.2-0.40.0-0.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.5-0.1-0.1-0.1-0.20.0-0.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome0.00.00.00.00.00.00.0

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

us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, mco:AccumulatedNetInvestmentHedgesGainLossAttributabletoParent


Net
Period End2021-06-302021-03-312019-09-30
Value0.01.01.0
Percentage of NetIncomeLoss0.00.10.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.00.10.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome mco:AccumulatedNetInvestmentHedgesGainLossAttributabletoParent0.00.00.0

us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:AccumulatedDefinedBenefitPlansAdjustment


Net
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-30
Value-8.0-2.0-2.0-1.0-1.0-1.0-1.0
Percentage of NetIncomeLoss-1.4-0.3-0.4-0.2-0.2-0.3-0.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.5-0.1-0.1-0.1-0.1-0.1-0.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome us-gaap:AccumulatedDefinedBenefitPlansAdjustment0.00.00.00.00.00.00.0

us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:AccumulatedGainLossNetCashFlowHedgeParent


Net
Period End2021-06-302021-03-312020-09-302020-06-302020-03-31
Value0.0-1.00.00.0-1.0
Percentage of NetIncomeLoss0.0-0.10.00.0-0.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.0-0.10.00.0-0.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome us-gaap:AccumulatedGainLossNetCashFlowHedgeParent0.00.00.00.00.0

us-gaap:NetIncomeLoss us-gaap:StatementEquityComponents

us-gaap:Parent


Net
Period End2021-06-30
Value577
Percentage of NetIncomeLoss100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax37.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:Parent0.0

us-gaap:RetainedEarnings


Net
Period End2021-06-30
Value577
Percentage of NetIncomeLoss100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax37.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:RetainedEarnings0.0

Profit Loss

us-gaap:ProfitLoss

us-gaap:ProfitLoss


Profit
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value57773631446750948736138231237325231237737628319313345-425.525625818622023326423124121832422120918622819116218617517598132190157138137122114
Percentage of ProfitLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax37.246.024.334.435.537.829.330.825.732.723.828.932.233.42.430.131.335.5-45.228.027.822.925.528.028.826.727.526.837.128.926.926.530.226.121.527.127.427.117.324.931.527.224.626.725.724.1

Share Based Compensation

us-gaap:ShareBasedCompensation

us-gaap:ShareBasedCompensation


Share
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value41454438353732333435303034353431282825232325202221222019202017161617181614151312141615131214
Percentage of ShareBasedCompensation100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Net Cash Provided By Used In Investing Activities

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:NetCashProvidedByUsedInInvestingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value-57.0-194.0-224.0-30.0-51.0-772.0185-96.7-45.6-7.2-292.6-68.5-26.8-18.5-12.6-3447.321181044.9101-108.4-10.510-42.5-49.3-320.3-131.2-31.2-82.2-39.1-203.8-16.2-2.8-4.1-20.2-12.3-13.6-202.3-24.9-27.1-13.3-173.8-21.7-19.7-13.6
Percentage of NetCashProvidedByUsedInInvestingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-3.7-12.1-17.4-2.2-3.6-59.815.0-7.8-3.8-0.6-27.6-6.3-2.3-1.6-1.1-324.32.11.911.10.510.9-13.3-1.21.2-4.6-5.7-36.5-16.1-3.6-10.7-5.0-28.9-2.1-0.4-0.5-2.9-1.9-2.1-35.7-4.7-4.5-2.3-30.8-4.2-4.1-2.9

Payments To Acquire Property Plant And Equipment

us-gaap:PaymentsToAcquirePropertyPlantAndEquipment

us-gaap:PaymentsToAcquirePropertyPlantAndEquipment


Payments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value3014202141218.1221820272522152126241830302826232521191718191911129.58.69.8136.6151418161924191916
Percentage of PaymentsToAcquirePropertyPlantAndEquipment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Payments To Acquire Investments

us-gaap:PaymentsToAcquireInvestments

us-gaap:PaymentsToAcquireInvestments


Payments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value446551223078274031385050
Percentage of PaymentsToAcquireInvestments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Net Cash Provided By Used In Financing Activities

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:NetCashProvidedByUsedInFinancingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value-502.0-290.0-354.0-120.0-642.0765-46.0-331.0-337.2-848.8568-512.6-285.3-182.3-289.5719623553-127.2-259.8-283.6-339.251-354.9-281.5123-671.1107-279.1-222.1-155.683-270.2-156.0-91.8436-135.5-7.0-25.3-239.3-8.0-145.1-136.6119-111.9-111.9
Percentage of NetCashProvidedByUsedInFinancingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-32.3-18.1-27.4-8.8-44.759.3-3.7-26.7-27.8-74.353.6-47.4-24.3-16.2-24.867.762.456.8-13.5-28.3-30.5-41.65.9-42.5-30.714.3-76.513.2-32.0-28.9-20.011.8-35.7-21.3-12.263.5-21.1-1.1-4.5-45.0-1.3-25.1-24.223.2-23.4-23.5

Payments Of Dividends Common Stock

us-gaap:PaymentsOfDividendsCommonStock

us-gaap:PaymentsOfDividendsCommonStock


Payments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value11611610510510510594959594
Percentage of PaymentsOfDividendsCommonStock100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Dividends

us-gaap:Dividends

us-gaap:Dividends


Dividends
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value11511610910610810196959693339888485
Percentage of Dividends100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:Dividends us-gaap:StatementEquityComponents

us-gaap:NoncontrollingInterest


Dividendsus-gaap:
Period End2021-06-302021-03-312020-12-312020-09-302019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value0.01.02.01.01.90.30.60.20.42.60.01.4
Percentage of Dividends0.00.91.80.92.00.30.60.20.12.90.01.6

us-gaap:Parent


Dividendsus-gaap:
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value1151151071051081019495969385858483
Percentage of Dividends100.099.198.299.1100.0100.098.099.799.499.825.097.1100.098.4

us-gaap:RetainedEarnings


Dividendsus-gaap:
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value1151151071051081019495969385858483
Percentage of Dividends100.099.198.299.1100.0100.098.099.799.499.825.097.1100.098.4

Payments For Repurchase Of Common Stock

us-gaap:PaymentsForRepurchaseOfCommonStock

us-gaap:PaymentsForRepurchaseOfCommonStock


Payments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value3711322500.00.02532631121674485566374336297955591932232621923042343654403202582011640-397.2-259.1-91.371251000.00.02060.0127104197029
Percentage of PaymentsForRepurchaseOfCommonStock100.0100.0100.00.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.0100.00.0100.0100.0100.0100.0100.0

Effective Income Tax Rate Continuing Operations

us-gaap:EffectiveIncomeTaxRateContinuingOperations

us-gaap:EffectiveIncomeTaxRateContinuingOperations


Effective
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value23.914.60.322.00.2360.137-0.0030.2540.280.09200.2440.2370.1460.1460.3140.3210.2340.1910.3050.3190.323-0.0050.320.3040.329-0.0090.3350.3310.289-0.0030.3220.3220.31700.2950.3360.3210.0130.2850.2780.332-0.0280.2440.3110.372
Percentage of EffectiveIncomeTaxRateContinuingOperations100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

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

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber


Share
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-31
Value1.01.62.22.93.94.86.08.913171920
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

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

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice


Share
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-31
Value133.9593.5169.8657.4849.6846.4746.045.042.8239.638.1137.26
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

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

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod

mco:PerformanceBasedRestrictedStock


Share
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value0100000.0000100000.0000100000.0000100000.0000200000.0000200000.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod0.0100.00.00.00.0100.00.00.00.0100.00.00.00.0100.00.00.00.0100.00.00.00.0100.0

us-gaap:RestrictedStock


Share
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value0500000.000500000.000800000.000700000.0001000000.0001200000.00100000.0800000.0000900000.00001300000.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod0.0500.00.00.0500.00.00.0800.00.00.0700.00.00.0500.00.00.0600.00.00.00.00.00.00.00.00.00.00.00.0

Deferred Tax Liabilities

us-gaap:DeferredTaxLiabilities

us-gaap:DeferredTaxLiabilities


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312012-12-312011-12-312010-12-312009-12-31
Value5511946444827226324220319315486
Percentage of DeferredTaxLiabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Deferred Tax Assets Net

us-gaap:DeferredTaxAssetsNet

us-gaap:DeferredTaxAssetsNet


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-31
Value70128154-197.82116698139148178196193
Percentage of DeferredTaxAssetsNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Unrecognized Tax Benefits

us-gaap:UnrecognizedTaxBenefits

us-gaap:UnrecognizedTaxBenefits


Unrecognized
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-312008-12-312007-12-31
Value483477494389199203220195156115174187193180164185156
Percentage of UnrecognizedTaxBenefits100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Deferred Tax Assets Valuation Allowance

us-gaap:DeferredTaxAssetsValuationAllowance

us-gaap:DeferredTaxAssetsValuationAllowance


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-31
Value159.022123.24.36.98.41513124.5
Percentage of DeferredTaxAssetsValuationAllowance100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

mco:AdjustedOperatingIncome

mco:AdjustedOperatingIncome


Adjusted
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-03-31
Value861914531721766649559613599518477514584540518498497475423438441334361378447399371372434356335314373304296293292
Percentage of AdjustedOperatingIncome100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

mco:AdjustedOperatingIncome us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, mco:MoodysAnalytics


Adjusted
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value18318615816714314613214513413312712510510111295
Percentage of AdjustedOperatingIncome21.320.429.823.218.722.523.723.722.525.726.724.418.018.821.819.2

us-gaap:OperatingSegments, mco:MoodysInvestorsService


Adjusted
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value678728373554623503426468464385350388479439408405
Percentage of AdjustedOperatingIncome78.779.670.276.881.377.576.376.377.574.373.375.682.081.278.781.4

mco:BusinessCombinationAdditionalConsiderationTransferred us-gaap:BusinessAcquisition

mco:BusinessCombinationAdditionalConsiderationTransferred

mco:Cortera


Business
Period End2021-03-19
Value1000000.0
Percentage of BusinessCombinationAdditionalConsiderationTransferred100.0

mco:CashPaidResultingInReductionOfNoncontrollingInterestOwnership

mco:CashPaidResultingInReductionOfNoncontrollingInterestOwnership


Cash
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value6.00.0170.00.00.00.012
Percentage of CashPaidResultingInReductionOfNoncontrollingInterestOwnership100.00.0100.00.00.00.00.0100.0

mco:EffectOfExchangeRateOnDeferredRevenue

mco:EffectOfExchangeRateOnDeferredRevenue


Effect
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value4.0-7.0245.0-29.022-17.6-2.05.0-9.9-0.2
Percentage of EffectOfExchangeRateOnDeferredRevenue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

mco:EffectOfExchangeRateOnDeferredRevenue us-gaap:StatementBusinessSegments

mco:MoodysAnalytics


Effect
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value3.0-4.019194.0-24.018-13.9-3.05.0-6.2-1.3
Percentage of EffectOfExchangeRateOnDeferredRevenue75.057.10.079.280.082.883.479.0150.0100.062.6650.0

mco:MoodysInvestorsService


Effect
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value1.0-3.04.05.01.0-5.03.7-3.71.00.0-3.71.1
Percentage of EffectOfExchangeRateOnDeferredRevenue25.042.90.020.820.017.216.621.0-50.00.037.4-550.0

mco:EmployeeServiceShareBasedCompensationTaxBenefitFromVestingOfOtherThanStockOptions us-gaap:AwardType

mco:EmployeeServiceShareBasedCompensationTaxBenefitFromVestingOfOtherThanStockOptions

mco:PerformanceBasedRestrictedStock


Employee
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value1.06.00.00.00.017-0.50.0-0.512-0.10.1
Percentage of EmployeeServiceShareBasedCompensationTaxBenefitFromVestingOfOtherThanStockOptions100.0100.00.00.00.0100.0100.00.0100.0100.0100.0100.0

us-gaap:RestrictedStock


Employee
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value2.0411.00.01.044-0.20.71.933-0.10.40.4330.30.50.433
Percentage of EmployeeServiceShareBasedCompensationTaxBenefitFromVestingOfOtherThanStockOptions200.0683.30.00.00.0258.840.00.0-380.0280.0100.0400.00.00.00.00.00.00.0

mco:GoodwillAdditionsAndAdjustmentsDuringPeriod

mco:GoodwillAdditionsAndAdjustmentsDuringPeriod


Goodwill
Period End2021-06-302021-03-312020-12-31
Value0.095131
Percentage of GoodwillAdditionsAndAdjustmentsDuringPeriod0.0100.0100.0

mco:GoodwillAdditionsAndAdjustmentsDuringPeriod us-gaap:StatementBusinessSegments

mco:MoodysAnalytics


Goodwill
Period End2021-06-302021-03-312020-12-31
Value0.095131
Percentage of GoodwillAdditionsAndAdjustmentsDuringPeriod0.0100.0100.0

mco:MoodysInvestorsService


Goodwill
Period End2020-12-31
Value0.0
Percentage of GoodwillAdditionsAndAdjustmentsDuringPeriod0.0

mco:IncreaseDecreaseinContractwithCustomerLiabilityExcludingEffectofExchangeRate

mco:IncreaseDecreaseinContractwithCustomerLiabilityExcludingEffectofExchangeRate


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value-97.0146142-111.0-124.064172-88.4-112.0104174
Percentage of IncreaseDecreaseinContractwithCustomerLiabilityExcludingEffectofExchangeRate100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

mco:OperatingLeaseImpairmentLossAndNonCashRestructuringCharge

mco:OperatingLeaseImpairmentLossAndNonCashRestructuringCharge


Operating
Period End2020-12-312020-09-302019-12-312019-09-30
Value13230.09.0
Percentage of OperatingLeaseImpairmentLossAndNonCashRestructuringCharge100.0100.00.0100.0

mco:OtherComprehensiveIncomeLossAmountOfGainLossOnDerivativesArisingDuringPeriodNetOfTax us-gaap:DerivativeInstrumentRisk, us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship

mco:OtherComprehensiveIncomeLossAmountOfGainLossOnDerivativesArisingDuringPeriodNetOfTax

us-gaap:CurrencySwap, us-gaap:NetInvestmentHedging


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value-18.072-84.0-98.0-49.066-46.179-19.7156.21.84.0
Percentage of OtherComprehensiveIncomeLossAmountOfGainLossOnDerivativesArisingDuringPeriodNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ForeignExchangeForward, us-gaap:NetInvestmentHedging


Other
Period End2021-06-302021-03-312020-12-312020-09-302019-12-312019-09-302018-12-312018-09-30
Value0.016-15.01.0-0.94.90.00.0
Percentage of OtherComprehensiveIncomeLossAmountOfGainLossOnDerivativesArisingDuringPeriodNetOfTax-0.022.217.9-1.02.06.20.00.0

us-gaap:LongTermDebt, us-gaap:NetInvestmentHedging


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value-10.045-48.0-46.0-24.023-24.018-9.58.07.32.223
Percentage of OtherComprehensiveIncomeLossAmountOfGainLossOnDerivativesArisingDuringPeriodNetOfTax55.662.557.146.949.034.852.122.948.253.3117.7122.2585.0

mco:OtherComprehensiveIncomeLossAmountOfGainLossOnDerivativesArisingDuringPeriodNetOfTax us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship

us-gaap:NetInvestmentHedging


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value-28.0133-147.0-143.0-73.089-71.0102-29.223134.027
Percentage of OtherComprehensiveIncomeLossAmountOfGainLossOnDerivativesArisingDuringPeriodNetOfTax155.6184.7175.0145.9149.0134.8154.0129.0148.2153.3217.7222.2685.0

mco:OtherComprehensiveIncomeLossCashFlowHedgeandNetInvestmentHedgeGainLossBeforeReclassificationAfterTax

mco:OtherComprehensiveIncomeLossCashFlowHedgeandNetInvestmentHedgeGainLossBeforeReclassificationAfterTax


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value-28.0133-147.0-144.0-87.053-71.0102-29.023124.0
Percentage of OtherComprehensiveIncomeLossCashFlowHedgeandNetInvestmentHedgeGainLossBeforeReclassificationAfterTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

mco:OtherComprehensiveIncomeLossCashFlowHedgeandNetInvestmentHedgeGainLossReclassificationAfterTax

mco:OtherComprehensiveIncomeLossCashFlowHedgeandNetInvestmentHedgeGainLossReclassificationAfterTax


Other
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value0-1000000.00-1000000.01300000.0800000.000-300000.0100000.0
Percentage of OtherComprehensiveIncomeLossCashFlowHedgeandNetInvestmentHedgeGainLossReclassificationAfterTax0.0100.00.0100.0100.0100.00.00.0100.0100.0

mco:OtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentBeforeReclassificationAndTax

mco:OtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentBeforeReclassificationAndTax


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value37-147.025420478-175.0157-194.042-27.0
Percentage of OtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentBeforeReclassificationAndTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

mco:OtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentBeforeReclassificationNetOfTax

mco:OtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentBeforeReclassificationNetOfTax


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value35-141.025218779-170.0156-194.042-27.0
Percentage of OtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentBeforeReclassificationNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

mco:OtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentBeforeReclassificationTax

mco:OtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentBeforeReclassificationTax


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value2.0-6.02.017-1.0-5.0-32.1340.00.0-7.41.8
Percentage of OtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentBeforeReclassificationTax100.0100.0100.0100.0100.0100.0100.0100.00.00.0100.0100.0

mco:OtherComprehensiveIncomeLossNetInvestmentHedgeGainLossBeforeReclassificationNetOfTax

mco:OtherComprehensiveIncomeLossNetInvestmentHedgeGainLossBeforeReclassificationNetOfTax


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value-29.0133-146.0-143.0-73.089-71.0102-29.023
Percentage of OtherComprehensiveIncomeLossNetInvestmentHedgeGainLossBeforeReclassificationNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

mco:OtherComprehensiveIncomeLossNetInvestmentHedgeGainLossBeforeReclassificationTax

mco:OtherComprehensiveIncomeLossNetInvestmentHedgeGainLossBeforeReclassificationTax


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value-12.042-49.0-48.0-24.030-24.034-7.07.0
Percentage of OtherComprehensiveIncomeLossNetInvestmentHedgeGainLossBeforeReclassificationTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

mco:OtherComprehensiveIncomeLossNetInvestmentHedgeGainLossReclassificationNetofTax

mco:OtherComprehensiveIncomeLossNetInvestmentHedgeGainLossReclassificationNetofTax


Other
Period End2021-06-302021-03-312019-12-312019-09-302018-12-312018-09-30
Value01000000.01200000.0800000.000
Percentage of OtherComprehensiveIncomeLossNetInvestmentHedgeGainLossReclassificationNetofTax0.0100.0100.0100.00.00.0

mco:OtherComprehensiveIncomeLossNetInvestmentHedgeGainLossReclassificationNetofTax us-gaap:DerivativeInstrumentRisk, us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship

us-gaap:ForeignExchangeForward, us-gaap:NetInvestmentHedging


Other
Period End2021-06-302021-03-312019-12-312019-09-302018-12-312018-09-30
Value01000000.01200000.0800000.000
Percentage of OtherComprehensiveIncomeLossNetInvestmentHedgeGainLossReclassificationNetofTax0.0100.0100.0100.00.00.0

mco:OtherComprehensiveIncomeLossNetInvestmentHedgeGainLossReclassificationNetofTax us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship

us-gaap:NetInvestmentHedging


Other
Period End2021-06-302021-03-312020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value01000000.0001200000.0800000.00000
Percentage of OtherComprehensiveIncomeLossNetInvestmentHedgeGainLossReclassificationNetofTax0.0100.00.00.0100.0100.00.00.00.00.0

mco:OtherComprehensiveIncomeLossNetInvestmentHedgeGainLossReclassificationTax

mco:OtherComprehensiveIncomeLossNetInvestmentHedgeGainLossReclassificationTax


Other
Period End2021-06-302019-12-312019-09-302018-12-312018-09-30
Value1000000.0800000.0200000.000
Percentage of OtherComprehensiveIncomeLossNetInvestmentHedgeGainLossReclassificationTax100.0100.0100.00.00.0

mco:OtherNonOperatingIncomeExpenseOther

mco:OtherNonOperatingIncomeExpenseOther


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-30
Value6.06.08.01.017-1.03.80.6-0.22.81.20.41.23.3-3.52.60.5-0.8-3.6-1.3-0.8-0.30.70.10.60.6-0.1-0.20.3-0.4-0.1-0.3-0.8-0.3-0.2-0.3-0.2-0.6-0.4-0.3
Percentage of OtherNonOperatingIncomeExpenseOther100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

mco:PaymentsOfDebtIssuanceAndDebtExtinguishmentOrDebtPrepaymentCosts

mco:PaymentsOfDebtIssuanceAndDebtExtinguishmentOrDebtPrepaymentCosts


Payments
Period End2020-12-312020-09-302020-06-302020-03-312018-12-312018-09-302017-12-312017-09-30
Value0.022116.09.20.10.20.9
Percentage of PaymentsOfDebtIssuanceAndDebtExtinguishmentOrDebtPrepaymentCosts0.0100.0100.0100.0100.0100.0100.0100.0

mco:PensionExpenseNetPeriodicPensionCostsOther

mco:PensionExpenseNetPeriodicPensionCostsOther


Pension
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value-3.04.03.03.04.03.04.64.54.44.52.52.62.92.32.71.92.11.7
Percentage of PensionExpenseNetPeriodicPensionCostsOther100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

mco:PercentageOfRevenues us-gaap:ProductOrService

mco:PercentageOfRevenues

mco:RecurringRevenue


Percentage
Period End2021-06-302020-06-30
Value53.051.0
Percentage of PercentageOfRevenues100.0100.0

mco:RelationshipRevenue


Percentage
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value51.02.056.00.510.5600.550.550.580.020.570.520.540.010.5
Percentage of PercentageOfRevenues0.00.00.01.00.00.00.00.00.00.00.00.00.00.00.0

mco:TransactionRevenue


Percentage
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value47.049.0-2.044.00.490.4400.450.450.42-0.020.430.480.46-0.010.5
Percentage of PercentageOfRevenues88.70.00.00.01.00.00.00.00.00.00.00.00.00.00.00.0

mco:PercentageOfRevenues us-gaap:ProductOrService, us-gaap:StatementBusinessSegments

mco:RecurringRevenue, mco:MoodysAnalytics


Percentage
Period End2021-06-302020-06-30
Value93.092.0
Percentage of PercentageOfRevenues175.5180.4

mco:RecurringRevenue, mco:MoodysInvestorsService


Percentage
Period End2021-06-302020-06-30
Value30.029.0
Percentage of PercentageOfRevenues56.656.9

mco:RelationshipRevenue, mco:MoodysAnalytics


Percentage
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value92.0090.00.920.900.840.850.8500.840.840.85-0.010.79
Percentage of PercentageOfRevenues0.00.00.01.80.00.00.00.00.00.00.00.00.00.00.0

mco:RelationshipRevenue, mco:MoodysInvestorsService


Percentage
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value28.02.034.00.290.3500.360.350.390.020.390.340.3600.35
Percentage of PercentageOfRevenues0.00.00.00.60.00.00.00.00.00.00.00.00.00.00.0

mco:TransactionRevenue, mco:MoodysAnalytics


Percentage
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value7.08.0010.00.080.100.160.150.1500.160.160.150.010.21
Percentage of PercentageOfRevenues13.20.00.00.00.20.00.00.00.00.00.00.00.00.00.00.0

mco:TransactionRevenue, mco:MoodysInvestorsService


Percentage
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value70.072.0-2.066.00.710.6500.640.650.61-0.020.610.660.6400.65
Percentage of PercentageOfRevenues132.10.00.00.01.40.00.00.00.00.00.00.00.00.00.00.0

mco:PercentageOfRevenues us-gaap:ProductOrService, us-gaap:StatementBusinessSegments, us-gaap:Subsegments

mco:RecurringRevenue, mco:MoodysAnalytics, mco:EnterpriseRiskSolutions


Percentage
Period End2021-06-302020-06-30
Value88.080.0
Percentage of PercentageOfRevenues166.0156.9

mco:RecurringRevenue, mco:MoodysAnalytics, mco:ResearchDataAndAnalytics


Percentage
Period End2021-06-302020-06-30
Value95.096.0
Percentage of PercentageOfRevenues179.2188.2

mco:RecurringRevenue, mco:MoodysInvestorsService, mco:CorporateFinance


Percentage
Period End2021-06-302020-06-30
Value22.020.0
Percentage of PercentageOfRevenues41.539.2

mco:RecurringRevenue, mco:MoodysInvestorsService, mco:FinancialInstitutions


Percentage
Period End2021-06-302020-06-30
Value47.046.0
Percentage of PercentageOfRevenues88.790.2

mco:RecurringRevenue, mco:MoodysInvestorsService, mco:PublicProjectAndInfrastructureFinance


Percentage
Period End2021-06-302020-06-30
Value32.028.0
Percentage of PercentageOfRevenues60.454.9

mco:RecurringRevenue, mco:MoodysInvestorsService, mco:StructuredFinanceLineOfBusiness


Percentage
Period End2021-06-302020-06-30
Value34.057.0
Percentage of PercentageOfRevenues64.2111.8

mco:RelationshipRevenue, mco:MoodysAnalytics, mco:EnterpriseRiskSolutions


Percentage
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value84.01.078.00.80.77-78.2376.00.80.8
Percentage of PercentageOfRevenues0.00.00.01.60.00.00.00.00.0

mco:RelationshipRevenue, mco:MoodysAnalytics, mco:ResearchDataAndAnalytics


Percentage
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value95.0095.00.960.95-98.0199.00.990.98
Percentage of PercentageOfRevenues0.00.00.01.90.00.00.00.00.0

mco:RelationshipRevenue, mco:MoodysInvestorsService, mco:CorporateFinance


Percentage
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value20.02.025.00.20.2500.280.290.30.010.350.270.2700.27
Percentage of PercentageOfRevenues0.00.00.00.40.00.00.00.00.00.00.00.00.00.00.0

mco:RelationshipRevenue, mco:MoodysInvestorsService, mco:FinancialInstitutions


Percentage
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value44.01.050.00.460.520.010.540.510.590.040.530.530.56-0.010.6
Percentage of PercentageOfRevenues0.00.00.00.90.00.00.00.00.00.00.00.00.00.00.0

mco:RelationshipRevenue, mco:MoodysInvestorsService, mco:MISOther


Percentage
Period End2021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-31
Value80.089.01.00.82100.01.00.8
Percentage of PercentageOfRevenues0.00.02.00.00.00.00.0

mco:RelationshipRevenue, mco:MoodysInvestorsService, mco:PublicProjectAndInfrastructureFinance


Percentage
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value30.01.031.00.280.3700.310.340.410.010.390.360.42-0.020.35
Percentage of PercentageOfRevenues0.00.00.00.50.00.00.00.00.00.00.00.00.00.00.0

mco:RelationshipRevenue, mco:MoodysInvestorsService, mco:StructuredFinanceLineOfBusiness


Percentage
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value43.0053.00.570.4800.450.390.4300.350.340.37-0.030.34
Percentage of PercentageOfRevenues0.00.00.01.10.00.00.00.00.00.00.00.00.00.00.0

mco:TransactionRevenue, mco:MoodysAnalytics, mco:EnterpriseRiskSolutions


Percentage
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value12.016.0-1.022.00.20.23-20.7724.00.20.2
Percentage of PercentageOfRevenues22.60.00.00.00.40.00.00.00.00.0

mco:TransactionRevenue, mco:MoodysAnalytics, mco:ResearchDataAndAnalytics


Percentage
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value5.05.005.00.040.05-0.991.00.010.02
Percentage of PercentageOfRevenues9.40.00.00.00.10.00.00.00.00.0

mco:TransactionRevenue, mco:MoodysInvestorsService, mco:CorporateFinance


Percentage
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value78.080.0-2.075.00.80.7500.720.710.7-0.010.650.730.7300.73
Percentage of PercentageOfRevenues147.20.00.00.01.60.00.00.00.00.00.00.00.00.00.00.0

mco:TransactionRevenue, mco:MoodysInvestorsService, mco:FinancialInstitutions


Percentage
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value53.056.0-1.050.00.540.48-0.010.460.490.41-0.040.470.470.440.010.4
Percentage of PercentageOfRevenues100.00.00.00.01.10.00.00.00.00.00.00.00.00.00.00.0

mco:TransactionRevenue, mco:MoodysInvestorsService, mco:MISOther


Percentage
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-31
Value-10.020.011.000.184.9100.2
Percentage of PercentageOfRevenues-18.90.00.00.00.00.00.00.0

mco:TransactionRevenue, mco:MoodysInvestorsService, mco:PublicProjectAndInfrastructureFinance


Percentage
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value68.070.0-1.069.00.720.6300.690.660.59-0.010.610.640.580.020.65
Percentage of PercentageOfRevenues128.30.00.00.01.40.00.00.00.00.00.00.00.00.00.00.0

mco:TransactionRevenue, mco:MoodysInvestorsService, mco:StructuredFinanceLineOfBusiness


Percentage
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value66.057.0047.00.430.5200.550.610.5700.650.660.630.030.66
Percentage of PercentageOfRevenues124.50.00.00.00.80.00.00.00.00.00.00.00.00.00.00.0

mco:UnrecognizedTaxBenefitsAndOtherNonCurrentTaxLiabilitiesPeriodIncreaseDecrease

mco:UnrecognizedTaxBenefitsAndOtherNonCurrentTaxLiabilitiesPeriodIncreaseDecrease


Unrecognized
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-31
Value3.0-78.0-3.04.05.0-18.025-1.86.5-21.91576-15.7-17.94410.07.50.94.0
Percentage of UnrecognizedTaxBenefitsAndOtherNonCurrentTaxLiabilitiesPeriodIncreaseDecrease100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

mco:UnrecognizedTaxBenefitsInterestReductionResultingFromLapseOfApplicableStatuteOfLimitationsAndSettlement

mco:UnrecognizedTaxBenefitsInterestReductionResultingFromLapseOfApplicableStatuteOfLimitationsAndSettlement


Unrecognized
Period End2021-06-302021-03-31
Value0.040
Percentage of UnrecognizedTaxBenefitsInterestReductionResultingFromLapseOfApplicableStatuteOfLimitationsAndSettlement0.0100.0

mco:UnrecognizedTaxBenefitsInterestReductionResultingFromLapseOfApplicableStatuteOfLimitationsAndSettlement us-gaap:StatementScenario, us-gaap:SubsequentEventType

srt:ScenarioForecast, us-gaap:SubsequentEvent


Unrecognized
Period End2021-03-31
Value40
Percentage of UnrecognizedTaxBenefitsInterestReductionResultingFromLapseOfApplicableStatuteOfLimitationsAndSettlement100.0

mco:UnrecognizedTaxBenefitsReductionResultingFromLapseOfApplicableStatuteOfLimitationsAndSettlement

mco:UnrecognizedTaxBenefitsReductionResultingFromLapseOfApplicableStatuteOfLimitationsAndSettlement


Unrecognized
Period End2021-06-302021-03-31
Value122-61.0
Percentage of UnrecognizedTaxBenefitsReductionResultingFromLapseOfApplicableStatuteOfLimitationsAndSettlement100.0100.0

mco:UnrecognizedTaxBenefitsReductionResultingFromLapseOfApplicableStatuteOfLimitationsAndSettlement us-gaap:StatementScenario, us-gaap:SubsequentEventType

srt:ScenarioForecast, us-gaap:SubsequentEvent


Unrecognized
Period End2021-03-31
Value61
Percentage of UnrecognizedTaxBenefitsReductionResultingFromLapseOfApplicableStatuteOfLimitationsAndSettlement-100.0

us-gaap:AccretionExpense us-gaap:LongtermDebtType

us-gaap:AccretionExpense

mco:TwoThousandSeventeenSeniorNotesDueTwoThousandTwentyOne


Accretion
Period End2020-09-30
Value17
Percentage of AccretionExpense100.0

us-gaap:BusinessCombinationConsiderationTransferred1 us-gaap:BusinessAcquisition

us-gaap:BusinessCombinationConsiderationTransferred1

mco:AcquireMediaZMFinancialSystemsCatylistInc


Business
Period End2020-12-31
Value205
Percentage of BusinessCombinationConsiderationTransferred1100.0

mco:Cortera


Business
Period End2021-03-19
Value139
Percentage of BusinessCombinationConsiderationTransferred10.0

us-gaap:ChangeInUnrealizedGainLossOnFairValueHedgingInstruments1 us-gaap:DerivativeInstrumentRisk, us-gaap:HedgingDesignation, us-gaap:IncomeStatementLocation

us-gaap:ChangeInUnrealizedGainLossOnFairValueHedgingInstruments1

us-gaap:InterestRateSwap, us-gaap:DesignatedAsHedgingInstrument, us-gaap:InterestExpense


Change
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value0.0-24.0-6.0-7.02.058-7.92.3191017-3.3-2.3-9.2-7.0-2.33.1
Percentage of ChangeInUnrealizedGainLossOnFairValueHedgingInstruments10.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

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

us-gaap:ChangeInUnrealizedGainLossOnHedgedItemInFairValueHedge1

us-gaap:InterestRateSwap, us-gaap:DesignatedAsHedgingInstrument, us-gaap:InterestExpense


Change
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value0.0246.07.0-2.0-58.07.9-2.3-19.8-10.8-17.03.32.39.27.02.3-3.1
Percentage of ChangeInUnrealizedGainLossOnHedgedItemInFairValueHedge10.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ContractWithCustomerLiabilityCumulativeCatchUpAdjustmentToRevenueChangeInMeasureOfProgress

us-gaap:ContractWithCustomerLiabilityCumulativeCatchUpAdjustmentToRevenueChangeInMeasureOfProgress


Contract
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value360626181356334504202372347502177353
Percentage of ContractWithCustomerLiabilityCumulativeCatchUpAdjustmentToRevenueChangeInMeasureOfProgress100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ContractWithCustomerLiabilityCumulativeCatchUpAdjustmentToRevenueChangeInMeasureOfProgress us-gaap:StatementBusinessSegments

mco:MoodysAnalytics


Contract
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value262452185273234343212290246347178251
Percentage of ContractWithCustomerLiabilityCumulativeCatchUpAdjustmentToRevenueChangeInMeasureOfProgress72.872.2102.276.770.168.1104.778.070.969.1100.971.3

mco:MoodysInvestorsService


Contract
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value98174-4.083100161-9.682101155-1.6101
Percentage of ContractWithCustomerLiabilityCumulativeCatchUpAdjustmentToRevenueChangeInMeasureOfProgress27.227.8