MRNA


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

Table of contents



us-gaap:CommonStockValue
us-gaap:StatementEquityComponents
us-gaap:SharesOutstanding

us-gaap:CommonStockSharesIssued

us-gaap:CommonStockSharesAuthorized

us-gaap:PreferredStockSharesAuthorized

us-gaap:CommonStockSharesOutstanding

us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding

us-gaap:WeightedAverageNumberOfSharesOutstandingBasic

us-gaap:WeightedAverageNumberOfShareOutstandingBasicAndDiluted

us-gaap:EarningsPerShareBasic

us-gaap:EarningsPerShareDiluted

us-gaap:EarningsPerShareBasicAndDiluted

us-gaap:AllocatedShareBasedCompensationExpense
us-gaap:AwardType
us-gaap:IncomeStatementLocation

us-gaap:ComprehensiveIncomeNetOfTax

us-gaap:CostOfGoodsAndServicesSold

us-gaap:CostsAndExpenses

us-gaap:GeneralAndAdministrativeExpense

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments

us-gaap:IncomeTaxExpenseBenefit

us-gaap:NetIncomeLoss
us-gaap:StatementEquityComponents

us-gaap:OperatingExpenses

us-gaap:OperatingIncomeLoss

us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax

us-gaap:OtherNonoperatingIncomeExpense

us-gaap:ResearchAndDevelopmentExpense

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax
us-gaap:ContractWithCustomerBasisOfPricing, us-gaap:ResearchAndDevelopmentArrangementContractToPerformForOthersByType
us-gaap:CounterpartyName, us-gaap:ProductOrService
us-gaap:MajorCustomers, us-gaap:ProductOrService, us-gaap:SupplyCommitment
us-gaap:ProductOrService
us-gaap:ProductOrService, us-gaap:ResearchAndDevelopmentArrangementContractToPerformForOthersByType
us-gaap:ResearchAndDevelopmentArrangementContractToPerformForOthersByType

us-gaap:Revenues
us-gaap:MajorCustomers, us-gaap:ProductOrService
us-gaap:ProductOrService
us-gaap:ProductOrService, us-gaap:StatementGeographical

us-gaap:Assets

us-gaap:Liabilities

us-gaap:LiabilitiesAndStockholdersEquity

us-gaap:StockholdersEquity
us-gaap:StatementEquityComponents

us-gaap:AssetsCurrent

us-gaap:CashAndCashEquivalentsAtCarryingValue

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents

us-gaap:AccountsReceivableNetCurrent

us-gaap:InventoryNet

us-gaap:OtherAssetsCurrent

us-gaap:PrepaidExpenseAndOtherAssetsCurrent

us-gaap:OperatingLeaseRightOfUseAsset
us-gaap:LeaseContractualTerm

us-gaap:OtherAssetsNoncurrent

us-gaap:AccountsPayableCurrent

us-gaap:AccruedLiabilitiesCurrent

us-gaap:ContractWithCustomerLiabilityCurrent
us-gaap:MajorCustomers, us-gaap:ProductOrService, us-gaap:SupplyCommitment
us-gaap:ProductOrService
us-gaap:SupplyCommitment

us-gaap:LiabilitiesCurrent

us-gaap:OperatingLeaseLiabilityCurrent

us-gaap:OtherAccruedLiabilitiesCurrent

us-gaap:OtherLiabilitiesCurrent

us-gaap:TaxesPayableCurrent

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:LeaseContractualTerm

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDue

us-gaap:LesseeOperatingLeaseLiabilityUndiscountedExcessAmount
us-gaap:RealEstateAndAccumulatedDepreciationDescriptionOfProperty, us-gaap:StatementGeographical

us-gaap:StockholdersEquity
us-gaap:StatementEquityComponents

us-gaap:CommonStockValue

us-gaap:AdditionalPaidInCapital

us-gaap:RetainedEarningsAccumulatedDeficit

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax

us-gaap:StockIssuedDuringPeriodValueNewIssues
us-gaap:StatementEquityComponents

us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue
us-gaap:StatementEquityComponents

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect

us-gaap:DeferredIncomeTaxExpenseBenefit

us-gaap:DepreciationDepletionAndAmortization

us-gaap:IncreaseDecreaseInAccountsPayable

us-gaap:IncreaseDecreaseInAccountsReceivable

us-gaap:IncreaseDecreaseInInventories

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetIncomeLoss
us-gaap:StatementEquityComponents

us-gaap:ShareBasedCompensation

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:PaymentsToAcquirePropertyPlantAndEquipment

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber

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

us-gaap:DeferredTaxAssetsNet

us-gaap:UnrecognizedTaxBenefits

us-gaap:DeferredTaxAssetsValuationAllowance

mrna:ChargesToFinancingLeaseLiabilities
us-gaap:ProductOrService
mrna:ContractWithCustomerAssetDeductionsDuringPeriod

mrna:ContractWithCustomerLiabilityDeductionsDuringPeriod
us-gaap:ProductOrService

mrna:FinanceLeaseCost

mrna:IncreaseDecreaseInRightOfUseAssetOperatingLeases
us-gaap:RealEstateAndAccumulatedDepreciationDescriptionOfProperty, us-gaap:StatementGeographical
mrna:LeasesImputedInterestRate
us-gaap:RealEstateAndAccumulatedDepreciationDescriptionOfProperty, us-gaap:StatementGeographical
mrna:LeasesIncrementalBorrowingRate

mrna:LesseeFinanceLeaseExpense
us-gaap:SubsequentEventType
mrna:NumberOfDosesOfVaccineCandidate
us-gaap:SubsequentEventType, us-gaap:SupplyCommitment

mrna:OperatingLeaseLiabilities
us-gaap:MajorCustomers
mrna:RevenueFromGrantsMaximumAward
us-gaap:MajorCustomers, us-gaap:Range
us-gaap:MajorCustomers, us-gaap:SubsequentEventType
us-gaap:MajorCustomers
mrna:RevenueFromGrantsPotentialReimbursement
us-gaap:MajorCustomers, us-gaap:SubsequentEventType

mrna:RightOfUseAssetsReducedThroughLeaseModificationsAndReassessments

mrna:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageGrantDateFairValue

mrna:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriodWeightedAverageGrantDateFairValue

us-gaap:CapitalExpendituresIncurredButNotYetPaid
us-gaap:ProductOrService
us-gaap:ContractWithCustomerAssetCumulativeCatchUpAdjustmentToRevenueChangeInMeasureOfProgress
us-gaap:ProductOrService
us-gaap:ContractWithCustomerLiabilityChangeInTimeframePerformanceObligationSatisfiedRevenueRecognized

us-gaap:ContractWithCustomerLiabilityCumulativeCatchUpAdjustmentToRevenueChangeInEstimateOfTransactionPrice
us-gaap:ContractWithCustomerBasisOfPricing, us-gaap:ResearchAndDevelopmentArrangementContractToPerformForOthersByType
us-gaap:ProductOrService, us-gaap:ResearchAndDevelopmentArrangementContractToPerformForOthersByType
us-gaap:ResearchAndDevelopmentArrangementContractToPerformForOthersByType

us-gaap:ContractWithCustomerLiabilityCumulativeCatchUpAdjustmentToRevenueChangeInMeasureOfProgress
us-gaap:ProductOrService
us-gaap:ProductOrService
us-gaap:ContractWithCustomerLiabilityRevenueRecognized
us-gaap:ResearchAndDevelopmentArrangementContractToPerformForOthersByType
us-gaap:DerivativeInstrumentRisk, us-gaap:IncomeStatementLocation
us-gaap:DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet

us-gaap:EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate

us-gaap:FinanceLeaseInterestExpense

us-gaap:FinanceLeaseInterestPaymentOnLiability

us-gaap:FinanceLeasePrincipalPayments

us-gaap:FinanceLeaseRightOfUseAssetAmortization

us-gaap:GainLossOnSaleOfPropertyPlantEquipment

us-gaap:IncreaseDecreaseInAccruedLiabilities

us-gaap:IncreaseDecreaseInContractWithCustomerLiability

us-gaap:IncreaseDecreaseInOtherOperatingLiabilities

us-gaap:IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets

us-gaap:InvestmentIncomeInterest

us-gaap:InvestmentIncomeNetAmortizationOfDiscountAndPremium

us-gaap:OperatingLeaseCost

us-gaap:OperatingLeasePayments

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

us-gaap:OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent
us-gaap:StatementEquityComponents

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax

us-gaap:OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax

us-gaap:OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax

us-gaap:PaymentsOfStockIssuanceCosts

us-gaap:PaymentsToAcquireAvailableForSaleSecuritiesDebt

us-gaap:PaymentsToAcquireInProcessResearchAndDevelopment
us-gaap:SupplyCommitment
us-gaap:ProceedsFromCustomers

us-gaap:ProceedsFromIssuanceOfCommonStock

us-gaap:ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities

us-gaap:ProceedsFromSaleOfAvailableForSaleSecuritiesDebt

us-gaap:ProceedsFromStockPlans

us-gaap:RestrictedStockExpense

us-gaap:RightOfUseAssetObtainedInExchangeForFinanceLeaseLiability

us-gaap:RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue

us-gaap:ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice

us-gaap:ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsForfeituresInPeriodWeightedAverageExercisePrice

us-gaap:ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice
us-gaap:AwardType
us-gaap:SharebasedCompensationArrangementBySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsAggregateIntrinsicValueVested

us-gaap:StockIssuedDuringPeriodSharesStockOptionsExercised
us-gaap:StatementEquityComponents

us-gaap:StockIssuedDuringPeriodValueEmployeeStockPurchasePlan
us-gaap:StatementEquityComponents

us-gaap:StockIssuedDuringPeriodValueStockOptionsExercised
us-gaap:StatementEquityComponents

us-gaap:VariableLeaseCost

us-gaap:WeightedAverageNumberDilutedSharesOutstandingAdjustment

mrna:AccruedClinicalTrials

mrna:AccruedDevelopmentOperation

mrna:AccruedExternalGoodsAndServicesCurrent

mrna:AccruedManufacturing

mrna:AccruedOtherExternalGoodsAndServicesCurrent

mrna:AccruedPropertyAndEquipmentCurrent

mrna:Commercial

mrna:DeferredTaxAssetsCapitalizedLicensesResearchAndDevelopmentAndStartUpCosts

mrna:DeferredTaxAssetsDeferredExpenseCapitalizedInventoryCosts

mrna:DeferredTaxAssetsFinancingLeaseLiability

mrna:DeferredTaxAssetsOperatingLeaseLiability

mrna:DeferredTaxLiabilitiesFinanceLeaseRightOfUseAsset

mrna:DeferredTaxLiabilitiesOperatingLeaseRightOfUseAsset

mrna:FinanceLeaseLiabilityToBePaidAfterYearFour
us-gaap:RealEstateAndAccumulatedDepreciationDescriptionOfProperty, us-gaap:StatementGeographical
mrna:LesseeOperatingLeasePercentageSubleased

mrna:OperatingAndFinanceLeaseLiability

mrna:OperatingAndFinanceLeaseLiabilityCurrent

mrna:OperatingAndFinanceLeaseLiabilityNoncurrent

mrna:OperatingAndFinanceLeaseRightOfUseAsset
us-gaap:IncomeTaxAuthority
mrna:OperatingLossCarryforwardsNotSubjectToExpiration
us-gaap:IncomeTaxAuthority
mrna:OperatingLossCarryforwardsSubjectToExpiration

mrna:OtherPrepaidExpenseManufacturing

mrna:RawMaterialsAccountsPayable
us-gaap:CapitalizedCostsOfUnprovedPropertiesExcludedFromAmortizationByPropertyOrProject, us-gaap:ResearchAndDevelopmentArrangementContractToPerformForOthersByType
mrna:ResearchAndDevelopmentArrangementContractToPerformForOthersMaximumAmount
us-gaap:MajorCustomers
mrna:RevenueFromGrantsCurrentFundingCapacity
us-gaap:MajorCustomers, us-gaap:CapitalizedCostsOfUnprovedPropertiesExcludedFromAmortizationByPropertyOrProject
us-gaap:MajorCustomers, us-gaap:CapitalizedCostsOfUnprovedPropertiesExcludedFromAmortizationByPropertyOrProject
mrna:RevenueFromGrantsRemainingFundingCapacity

mrna:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageGrantDateFairValue

mrna:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageGrantDateFairValue

mrna:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingWeightedAverageGrantDateFairValue

mrna:TenantIncentivesReceivablesCurrent

us-gaap:AccruedRoyaltiesCurrentAndNoncurrent
us-gaap:RealEstateAndAccumulatedDepreciationDescriptionOfProperty
us-gaap:AreaOfRealEstateProperty
us-gaap:StatementGeographical
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency
us-gaap:AssetsFairValueDisclosure
us-gaap:FairValueByMeasurementFrequency
us-gaap:FairValueByFairValueHierarchyLevel
us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FinancialInstrument
us-gaap:FinancialInstrument
us-gaap:FairValueByFairValueHierarchyLevel
us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FinancialInstrument

us-gaap:AvailableForSaleDebtSecuritiesAmortizedCostBasis
us-gaap:FairValueByFairValueHierarchyLevel
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FinancialInstrument
us-gaap:FinancialInstrument

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsAmortizedCost

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesSingleMaturityDate

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue
us-gaap:BalanceSheetLocation, us-gaap:FairValueByFairValueHierarchyLevel
us-gaap:AvailableForSaleSecuritiesDebtSecurities
us-gaap:BalanceSheetLocation, us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FinancialInstrument
us-gaap:BalanceSheetLocation, us-gaap:FinancialInstrument
us-gaap:FairValueByFairValueHierarchyLevel
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency, us-gaap:FinancialInstrument
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FinancialInstrument
us-gaap:FairValueByMeasurementFrequency, us-gaap:FinancialInstrument
us-gaap:FinancialInstrument

us-gaap:AvailableForSaleSecuritiesDebtSecuritiesCurrent

us-gaap:AvailableForSaleSecuritiesDebtSecuritiesNoncurrent
us-gaap:AwardType
us-gaap:CommonStockCapitalSharesReservedForFutureIssuance
us-gaap:ProductOrService
us-gaap:ContractWithCustomerAssetNet

us-gaap:ContractWithCustomerLiability
us-gaap:MajorCustomers, us-gaap:ProductOrService, us-gaap:SupplyCommitment
us-gaap:ProductOrService
us-gaap:ResearchAndDevelopmentArrangementContractToPerformForOthersByType
us-gaap:SupplyCommitment

us-gaap:ContractWithCustomerLiabilityNoncurrent

us-gaap:DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months
us-gaap:FinancialInstrument

us-gaap:DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss
us-gaap:FinancialInstrument

us-gaap:DebtSecuritiesAvailableForSaleUnrealizedLossPosition
us-gaap:FinancialInstrument

us-gaap:DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss
us-gaap:FinancialInstrument

us-gaap:DeferredIncomeTaxAssetsNet

us-gaap:DeferredIncomeTaxLiabilities

us-gaap:DeferredTaxAssetsDeferredIncome

us-gaap:DeferredTaxAssetsGross

us-gaap:DeferredTaxAssetsOperatingLossCarryforwards

us-gaap:DeferredTaxAssetsTaxCreditCarryforwards

us-gaap:DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost

us-gaap:DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAccruedLiabilities

us-gaap:DeferredTaxLiabilitiesOther

us-gaap:DeferredTaxLiabilitiesPropertyPlantAndEquipment

us-gaap:DerivativeAssets
us-gaap:DerivativeInstrumentRisk, us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship, us-gaap:HedgingDesignation
us-gaap:DerivativeInstrumentRisk, us-gaap:HedgingDesignation
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency
us-gaap:FairValueByMeasurementFrequency
us-gaap:HedgingDesignation

us-gaap:DerivativeAssetsCurrent
us-gaap:DerivativeInstrumentRisk, us-gaap:HedgingDesignation
us-gaap:DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsAssetAtFairValue
us-gaap:HedgingDesignation
us-gaap:DerivativeInstrumentRisk, us-gaap:HedgingDesignation
us-gaap:DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsLiabilityAtFairValue
us-gaap:HedgingDesignation

us-gaap:DerivativeLiabilities
us-gaap:DerivativeInstrumentRisk, us-gaap:HedgingDesignation
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency
us-gaap:FairValueByMeasurementFrequency
us-gaap:HedgingDesignation

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

us-gaap:EmployeeRelatedLiabilitiesCurrent

us-gaap:EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized

us-gaap:FinanceLeaseLiability

us-gaap:FinanceLeaseLiabilityCurrent

us-gaap:FinanceLeaseLiabilityNoncurrent

us-gaap:FinanceLeaseLiabilityPaymentsDue

us-gaap:FinanceLeaseLiabilityPaymentsDueAfterYearFive

us-gaap:FinanceLeaseLiabilityPaymentsDueNextTwelveMonths

us-gaap:FinanceLeaseLiabilityPaymentsDueYearFive

us-gaap:FinanceLeaseLiabilityPaymentsDueYearFour

us-gaap:FinanceLeaseLiabilityPaymentsDueYearThree

us-gaap:FinanceLeaseLiabilityPaymentsDueYearTwo

us-gaap:FinanceLeaseLiabilityPaymentsRemainderOfFiscalYear

us-gaap:FinanceLeaseLiabilityUndiscountedExcessAmount
us-gaap:RealEstateAndAccumulatedDepreciationDescriptionOfProperty, us-gaap:StatementGeographical

us-gaap:FinanceLeaseRightOfUseAsset

us-gaap:FinanceLeaseWeightedAverageDiscountRatePercent

us-gaap:ForeignCurrencyCashFlowHedgeGainLossToBeReclassifiedDuringNext12Months

us-gaap:InterestReceivableCurrent

us-gaap:InventoryFinishedGoodsNetOfReserves

us-gaap:InventoryRawMaterialsNetOfReserves

us-gaap:InventoryWorkInProcessNetOfReserves

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths

us-gaap:LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency
us-gaap:LettersOfCreditOutstandingAmount

us-gaap:OperatingLeaseWeightedAverageDiscountRatePercent
us-gaap:IncomeTaxAuthority
us-gaap:OperatingLossCarryforwards
us-gaap:MajorCustomers
us-gaap:OtherCommitment

us-gaap:OtherPrepaidExpenseCurrent

us-gaap:OtherSundryLiabilitiesCurrent

us-gaap:PrepaidExpenseCurrent

us-gaap:PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAccumulatedDepreciationAndAmortization

us-gaap:PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortization

us-gaap:PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetBeforeAccumulatedDepreciationAndAmortization
us-gaap:PropertyPlantAndEquipmentByType
us-gaap:PurchaseCommitmentExcludingLongtermCommitment
us-gaap:PurchaseCommitmentRemainingMinimumAmountCommitted
us-gaap:SubsequentEventType

us-gaap:RestrictedCashCurrent

us-gaap:RestrictedCashNoncurrent

us-gaap:RevenueRemainingPerformanceObligation
mrna:PerformanceObligation, us-gaap:ResearchAndDevelopmentArrangementContractToPerformForOthersByType
us-gaap:ContractWithCustomerBasisOfPricing, us-gaap:ResearchAndDevelopmentArrangementContractToPerformForOthersByType
us-gaap:ProductOrService
us-gaap:ResearchAndDevelopmentArrangementContractToPerformForOthersByType
us-gaap:StatementGeographical, us-gaap:LeaseArrangementType, us-gaap:StatementScenario
us-gaap:SecurityDeposit
us-gaap:StatementGeographical, us-gaap:StatementScenario, us-gaap:LeaseArrangementType
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized
us-gaap:AwardType
us-gaap:PlanName
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingAggregateIntrinsicValue

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingNumber

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingWeightedAverageExercisePrice
us-gaap:AwardType, us-gaap:PlanName
us-gaap:SharePrice
us-gaap:Range, us-gaap:AwardType

us-gaap:SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1
us-gaap:SubsequentEventType
us-gaap:SignificantSupplyCommitmentRemainingMinimumAmountCommitted
us-gaap:SubsequentEventType
us-gaap:StockRepurchaseProgramAuthorizedAmount1
us-gaap:IncomeTaxAuthority, us-gaap:TaxCreditCarryforward
us-gaap:TaxCreditCarryforwardAmount
us-gaap:StatementGeographical
us-gaap:TenantImprovements

us-gaap:ValueAddedTaxReceivableCurrent

Plots across concepts


IncomeStatement
Net Income Loss
Expenses
Other Nonoperating Income Expense
Balance Sheet
Operating Lease Right Of Use Asset
Assets
Derivative Assets
Current Assets
Other Assets Current
NonCurrent Assets
Other Assets Noncurrent
Liabilities
Derivative Liabilities
Current Liabilities
Operating Lease Liability Current
Stockholders Equity
Common Stock Value
CashFlow
Net Cash Provided By Used In Investing Activities
NetCashProvidedByUsedInOperatingActivities
Increase Decrease In Accounts Receivable
NetCashProvidedByUsedInInvestingActivities
Net Cash Provided By Used In Investing Activities
Shares
Weighted Average Number Of Share Outstanding Basic And Diluted
OperatingLeaseLiability
Operating Lease Liability Current
LesseeOperatingLeaseLiabilityPaymentsDue
Lessee Operating Lease Liability Payments Remainder Of Fiscal Year
InventoryNet
Inventory Finished Goods Net Of Reserves

Tables

  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
us-gaap:CommonStockValue NANA0.040.040.0390.0370.0340.0330.0330.0330.033NANANA0.0027522NANANA
 us-gaap:SharesOutstanding us-gaap:StatementEquityComponents us-gaap:CommonStock█▄▁403.0401.0399.0NA393.277267370.102805336.536985332.494777329.958172328.85334328.79890466.35290166.20479665.54384165.206999NANANA
us-gaap:CommonStockSharesIssued █▄▁403.0401.0399.0NA393.277267370.102805336.536985332.494777329.958172328.85334328.798904NANANA29.9104504413NANANA
us-gaap:CommonStockSharesAuthorized ▄▄▄1600.01600.01600.0NA1600.01600.01600.01600.01600.01600.01600.0NANANA696.581112NANANA
us-gaap:PreferredStockSharesAuthorized ▄▄▄162.0162.0162.0NA162.0162.0162.0162.0162.0162.0162.0NANANA0.0NANANA
us-gaap:CommonStockSharesOutstanding █▄▁403.0401.0399.0NA393.277267370.102805336.536985332.494777329.958172328.85334328.798904NANANA29.9104504413NANANA
us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding █▁431.0430.0NANA381.0353.0NANANANANANANANANANANANA
us-gaap:WeightedAverageNumberOfSharesOutstandingBasic █▁402.0400.0NANA381.0353.0NANANANANANANANANANANANA
us-gaap:WeightedAverageNumberOfShareOutstandingBasicAndDiluted NANANA394.682744380.531488353.105021NA330.769341329.176107328.809986NA66.2830465.93893965.430835NANANANA
us-gaap:EarningsPerShareBasic █▁6.933.05NANA-0.31-0.35NANANANANANANANANANANANA
us-gaap:EarningsPerShareDiluted █▁6.462.84NANA-0.31-0.35NANANANANANANANANANANANA
us-gaap:EarningsPerShareBasicAndDiluted NANA-0.7-0.59-0.31-0.35-0.37-0.37-0.41-0.4-1.14-1.32-1.43-1.16-0.64-1.05-1.47-1.03
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
us-gaap:AllocatedShareBasedCompensationExpense █▆▅▄▅▄▄▄▄▃▇▂▂▁35.030.025.47923.20623.92320.41320.32620.80421.49518.49731.64114.7214.35311.851NANANANA
us-gaap:ComprehensiveIncomeNetOfTax █▄▁▁▁▁▁▁▁▁▁▁▁▁2795.01219.0-274.265-237.108-102.33-132.161-124.142-123.105-132.904-130.746-141.824-79.244-89.46-74.369NANANANA
us-gaap:CostOfGoodsAndServicesSold █▁750.0193.0NANANANANANANANANANANANANANANANA
us-gaap:CostsAndExpenses █▁1292.0671.0NANA189.0139.0NANANANANANANANANANANANA
us-gaap:GeneralAndAdministrativeExpense █▅▅▃▂▂▂▂▂▂▂▁▁▁121.077.078.9948.54136.62224.11425.62628.18828.52327.28338.02318.52521.38716.317NANANANA
us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments █▄▁▁▁▁▁▁▁▁▁▁▁▁3063.01260.0-271.012-232.772-116.565-124.164-123.285-123.372-135.378-132.681-141.258-80.331-90.443-72.376NANANANA
us-gaap:IncomeTaxExpenseBenefit █▂▁▁▁▁▁▁▁▁▁▁▁▁283.039.01.4730.8640.1480.066-0.169-0.178-0.324-0.0240.1680.00.1580.0NANANANA
us-gaap:NetIncomeLoss █▄▁▁▁▁▁▁▁▁▁▁▁▁2780.01221.0-272.485-233.636-116.713-124.23-123.116-123.194-135.054-132.657-141.426-80.331-90.601-72.376NANANANA
us-gaap:OperatingExpenses NANANA393.027188.478139.251144.611147.903157.019157.858188.452127.575125.866106.441133.732110.343135.31595.791
us-gaap:OperatingIncomeLoss █▄▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁3062.01266.0-275.038-235.117-122.127-130.862-130.556-130.857-143.936-141.833-153.031-85.818-97.015-77.402-41.828-67.871-94.194-65.463
us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax 21.0NANANANANANANANANANANANANANANANANA
us-gaap:OtherNonoperatingIncomeExpense ▅▁▆▅▆▆▅▅▅▅█▆▇▆-2.0-10.0-0.174-3.226-1.53-1.154-2.175-1.767-1.764-1.822.879-1.0320.171-0.183NANANANA
us-gaap:ResearchAndDevelopmentExpense ▄▄█▄▂▁▁▁▁▁▂▁▁▁421.0401.0758.86344.486151.856115.137117.523119.715128.496130.575150.429109.05104.47990.124NANANANA
us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax █▄▂▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁4354.01937.0570.745157.9166.3518.38914.05517.04613.08316.02535.42141.75728.85129.03991.90442.47241.12130.328
us-gaap:Revenues █▄▂▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁4354.01937.0570.745157.9166.3518.38914.05517.04613.08316.02535.42141.75728.85129.03991.90442.47241.12130.328
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
us-gaap:Assets █▆▄▂▂▁▁▁▁▁▁16153.012694.07336.754650.8733486.0062067.5411589.4221590.8991685.2791806.2071962.149NANANA1084.489NANANA
us-gaap:Liabilities ██▄▂▁▁▁▁▁▁▁9449.08856.04775.3751891.075539.121426.667414.612339.092346.725360.174431.908NANANA459.193NANANA
us-gaap:LiabilitiesAndStockholdersEquity █▆▄▂▂▁▁▁▁▁▁16153.012694.07336.754650.8733486.0062067.5411589.4221590.8991685.2791806.2071962.149NANANA1084.489NANANA
us-gaap:StockholdersEquity █▅▄▄▄▃▃▃▃▃▃▁▁▁▁6704.03838.02561.3752759.7982946.8851640.8741174.811251.8071338.5541446.0331530.241-757.129-688.768-613.709-551.365NANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
us-gaap:AssetsCurrent ██▄▃▂▁▁▁▁▁▁10969.011703.06297.8793577.2112796.7441249.9361128.8041094.4661097.4181140.8271563.006NANANA783.223NANANA
us-gaap:CashAndCashEquivalentsAtCarryingValue ██▄▃▃▁▁▁▁▂▂▁▁▁▁5603.05442.02623.851505.5811761.629391.72235.876173.711151.624502.934658.364167.06140.61990.479134.859NANANA
us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents ██▄▃▃▁▁▁▁▂▂▁▁▁▁5614.05453.02635.9351517.6661773.452403.543247.699185.534163.448514.757670.491179.423152.982102.514147.608NANANA
us-gaap:AccountsReceivableNetCurrent ▅█▄▁▁▁▁▁▁▁▁2020.03210.01390.56190.50133.3625.6175.0322.83.4985.64611.686NANANA11.881NANANA
us-gaap:InventoryNet █▆▁643.0494.046.527NANANANANANANANANANANANANANANA
us-gaap:OtherAssetsCurrent 38.0NA21.0NANANANANANANANANANANANANANANA
us-gaap:PrepaidExpenseAndOtherAssetsCurrent █▇▆▃▂▁▁▁▁▁▁316.0264.0252.152109.37645.33723.90319.40326.67822.49225.29228.399NANANA12.826NANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
us-gaap:OperatingLeaseRightOfUseAsset █▂▃▃▃▇▁104.089.090.20191.68492.046100.53386.414NANANANANANANANANANANA
us-gaap:OtherAssetsNoncurrent ▅▁▅▅▃▄▅▆█▇█2.01.01.882.0471.571.7361.9312.0942.5582.4382.644NANANA4.586NANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
us-gaap:AccountsPayableCurrent █▁▂▂▂▁▁▁▃▄▃77.08.018.35920.52118.81711.0347.0911.73729.60938.50931.21NANANA20.725NANANA
us-gaap:AccruedLiabilitiesCurrent █▇▅▂▁▁▁▁▁▁▁848.0753.0469.591208.83289.20455.0267.65260.07944.58942.18379.073NANANA72.715NANANA
us-gaap:ContractWithCustomerLiabilityCurrent ██▅▂▁▁▁▁▁▁▁7302.07531.03867.1931234.50645.24458.84263.3170.19183.40173.958109.056NANANANANANANA
us-gaap:LiabilitiesCurrent ██▄▂▁▁▁▁▁▁▁8840.08441.04388.8081473.561161.647134.582143.115147.842161.987159.159222.803NANANA191.461NANANA
us-gaap:OperatingLeaseLiabilityCurrent █▄▃▂▂▁▁11.07.05.9724.7314.1933.9873.584NANANANANANANANANANANA
us-gaap:OtherAccruedLiabilitiesCurrent 39.0NA25.0NANANANANANANANANANANANANANANA
us-gaap:OtherLiabilitiesCurrent █▃▁▁▁▁▁▁▁▁▁613.0149.033.6659.7028.3829.6865.0635.8354.3884.5093.464NANANA1.282NANANA
us-gaap:TaxesPayableCurrent 377.0NANANANANANANANANANANANANANANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
us-gaap:OtherLiabilitiesNoncurrent ▄▇▇█▅▅▁▁▁▁▁1.02.01.8532.1831.2241.2470.1380.1610.1880.2130.258NANANA1.53NANANA
us-gaap:OperatingLeaseLiabilityNoncurrent ▆▂▃▃▄█▁105.096.097.42198.95499.636108.91993.675NANANANANANANANANANANA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearTwo █▁▁▁23.016.015.91315.913NANANANANANANANANANANANANANA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearThree ▁▁██16.016.016.00816.008NANANANANANANANANANANANANANA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFour ██▁▁17.017.016.16816.168NANANANANANANANANANANANANANA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFive NANA16.567110.167NANANANANANANANANANANANANANA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive NANA93.599NANANANANANANANANANANANANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
us-gaap:StockholdersEquity █▅▄▄▄▃▃▃▃▃▃▁▁▁▁6704.03838.02561.3752759.7982946.8851640.8741174.811251.8071338.5541446.0331530.241-757.129-688.768-613.709-551.365NANANA
us-gaap:CommonStockValue NANA0.040.040.0390.0370.0340.0330.0330.0330.033NANANA0.0027522NANANA
us-gaap:AdditionalPaidInCapital ███▇▇▃▁▁▁▁▁4931.04860.04801.8494726.0074675.9873267.6482669.4262618.4922582.1342556.7092538.155NANANA71.679NANANA
us-gaap:RetainedEarningsAccumulatedDeficit █▃▁▁▂▂▂▃▃▃▃1757.0-1023.0-2243.518-1971.033-1737.397-1620.684-1500.0-1369.548-1246.354-1111.3-1006.627NANANA-621.893NANANA
us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax █▃▄▄▆▁▄▄▄▃▃16.01.03.0044.7848.256-6.1271.8042.832.7410.591-1.32NANANA-1.157NANANA
us-gaap:StockIssuedDuringPeriodValueNewIssues NANA-0.0340.01303.304549.455NANANANA562.8740.00.00.152NANANANA
 us-gaap:StockIssuedDuringPeriodValueNewIssues us-gaap:StatementEquityComponents us-gaap:AdditionalPaidInCapitalNANA-0.0350.01303.303549.452NANANANANANANA0.152NANANANA
 us-gaap:StockIssuedDuringPeriodValueNewIssues us-gaap:StatementEquityComponents us-gaap:CommonStockNANA0.0010.00.0010.003NANANANANANANANANANANANA
us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue █▆▅▄▅▄▄▄▄▃▇▂▂▁35.030.025.47923.20623.92320.41320.32620.80421.49518.49731.64114.7214.35311.851NANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
us-gaap:NetCashProvidedByUsedInOperatingActivities █▆▃▃▁▁▁▁▁▁▁▁▁▁4063.02971.01264.289892.748-23.875-106.191-95.773-107.048-112.22-143.927-91.02-80.211-48.249-111.385NANANANA
us-gaap:NetCashProvidedByUsedInInvestingActivities ▁▇▇▆█▇██▇████▇-3878.0-180.0-190.129-1178.2612.479-316.018130.348113.367-246.901-11.7596.795116.082-11.645-483.704NANANANA
us-gaap:NetCashProvidedByUsedInFinancingActivities ▁▁▁▁█▄▁▁▁▁▄▁▂▄-24.026.044.10929.7261381.305578.05327.5915.7677.812-0.048575.915-9.43110.362549.995NANANANA
us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect ▂█▄▁▅▂▂▂▁▁▃▂▂▂161.02817.01118.269-255.7861369.909155.84462.16522.086-351.309-155.734491.06826.44150.468-45.094NANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
us-gaap:DeferredIncomeTaxExpenseBenefit █▁-22.0-50.0NANANANANANANANANANANANANANANANA
us-gaap:DepreciationDepletionAndAmortization █▂▁▁▁▁▁▁▁▁▁▁▁▁69.015.07.7068.57.67.4498.97.37.57.37.3886.55.95.153NANANANA
us-gaap:IncreaseDecreaseInAccountsPayable █▁▂▃▃▃▂▁▂▃▄▃▂▃59.0-15.0-1.7582.169.1422.331-4.779-17.714-3.2021.73114.2992.058-2.8071.467NANANANA
us-gaap:IncreaseDecreaseInAccountsReceivable ▁█▇▄▄▄▄▄▄▄▄▄▄▄-1190.01819.01200.059157.13927.4080.5852.232-0.698-2.148-6.041.841-1.5473.387-3.876NANANANA
us-gaap:IncreaseDecreaseInInventories ▁█148.0448.0NANANANANANANANANANANANANANANANA
us-gaap:NetCashProvidedByUsedInOperatingActivities █▆▃▃▁▁▁▁▁▁▁▁▁▁4063.02971.01264.289892.748-23.875-106.191-95.773-107.048-112.22-143.927-91.02-80.211-48.249-111.385NANANANA
us-gaap:NetIncomeLoss █▄▁▁▁▁▁▁▁▁▁▁▁▁2780.01221.0-272.485-233.636-116.713-124.23-123.116-123.194-135.054-132.657-141.426-80.331-90.601-72.376NANANANA
us-gaap:ShareBasedCompensation █▆▅▄▅▄▄▄▄▃▇▂▂▁35.030.025.47923.20623.92320.41320.32620.80421.49518.49731.64114.7214.35311.851NANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
us-gaap:NetCashProvidedByUsedInInvestingActivities ▁▇▇▆█▇██▇████▇-3878.0-180.0-190.129-1178.2612.479-316.018130.348113.367-246.901-11.7596.795116.082-11.645-483.704NANANANA
us-gaap:PaymentsToAcquirePropertyPlantAndEquipment ▇█▅▄▄▁▁▁▂▁▃▆█▇30.035.023.30119.29218.6326.2236.6626.71110.5867.59513.63726.1434.0831.909NANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
us-gaap:NetCashProvidedByUsedInFinancingActivities ▁▁▁▁█▄▁▁▁▁▄▁▂▄-24.026.044.10929.7261381.305578.05327.5915.7677.812-0.048575.915-9.43110.362549.995NANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31

Common Stock Value

us-gaap:CommonStockValue

us-gaap:CommonStockValue


Common
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value40000.040000.039000.037000.034000.033000.033000.033000.033000.02752.2
Percentage of CommonStockValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.0

Shares Outstanding

us-gaap:SharesOutstanding us-gaap:StatementEquityComponents

us-gaap:SharesOutstanding

us-gaap:CommonStock


Shares
Period End2021-06-302021-03-312020-12-312020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-312015-12-31
Value40340139939337033633232932832866666565630.0
Percentage of SharesOutstanding100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0

Common Stock Shares Issued

us-gaap:CommonStockSharesIssued

us-gaap:CommonStockSharesIssued


Common
Period End2021-06-302021-03-312020-12-312020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value40340139939337033633232932832829
Percentage of CommonStockSharesIssued100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Common Stock Shares Authorized

us-gaap:CommonStockSharesAuthorized

us-gaap:CommonStockSharesAuthorized


Common
Period End2021-06-302021-03-312020-12-312020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-12-112018-02-282017-12-31
Value16001600160016001600160016001600160016001600775696
Percentage of CommonStockSharesAuthorized100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Preferred Stock Shares Authorized

us-gaap:PreferredStockSharesAuthorized

us-gaap:PreferredStockSharesAuthorized


Preferred
Period End2021-06-302021-03-312020-12-312020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-12-112017-12-31
Value1621621621621621621621621621621620.0
Percentage of PreferredStockSharesAuthorized100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0

Common Stock Shares Outstanding

us-gaap:CommonStockSharesOutstanding

us-gaap:CommonStockSharesOutstanding


Common
Period End2021-06-302021-03-312020-12-312020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value40340139939337033633232932832829
Percentage of CommonStockSharesOutstanding100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Weighted Average Number Of Diluted Shares Outstanding

us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding

us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding


Weighted
Period End2021-06-302021-03-312020-06-302020-03-31
Value431430381353
Percentage of WeightedAverageNumberOfDilutedSharesOutstanding100.0100.0100.0100.0

Weighted Average Number Of Shares Outstanding Basic

us-gaap:WeightedAverageNumberOfSharesOutstandingBasic

us-gaap:WeightedAverageNumberOfSharesOutstandingBasic


Weighted
Period End2021-06-302021-03-312020-06-302020-03-31
Value402400381353
Percentage of WeightedAverageNumberOfSharesOutstandingBasic100.0100.0100.0100.0

Weighted Average Number Of Share Outstanding Basic And Diluted

us-gaap:WeightedAverageNumberOfShareOutstandingBasicAndDiluted

us-gaap:WeightedAverageNumberOfShareOutstandingBasicAndDiluted


Weighted
Period End2020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value394380353330329328666565
Percentage of WeightedAverageNumberOfShareOutstandingBasicAndDiluted100.0100.0100.0100.0100.0100.0100.0100.0100.0

Earnings Per Share Basic

us-gaap:EarningsPerShareBasic

us-gaap:EarningsPerShareBasic


Earnings
Period End2021-06-302021-03-312020-06-302020-03-31
Value6.933.05-0.31-0.35
Percentage of EarningsPerShareBasic100.0100.0100.0100.0

Earnings Per Share Diluted

us-gaap:EarningsPerShareDiluted

us-gaap:EarningsPerShareDiluted


Earnings
Period End2021-06-302021-03-312020-06-302020-03-31
Value6.462.84-0.31-0.35
Percentage of EarningsPerShareDiluted100.0100.0100.0100.0

Earnings Per Share Basic And Diluted

us-gaap:EarningsPerShareBasicAndDiluted

us-gaap:EarningsPerShareBasicAndDiluted


Earnings
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value-0.7-0.59-0.31-0.35-0.37-0.37-0.41-0.4-1.14-1.32-1.43-1.16-0.64-1.05-1.47-1.03
Percentage of EarningsPerShareBasicAndDiluted100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Allocated Share Based Compensation Expense

us-gaap:AllocatedShareBasedCompensationExpense

us-gaap:AllocatedShareBasedCompensationExpense


Allocated
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value3530252323202020211831141411
Percentage of AllocatedShareBasedCompensationExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.81.50.014.736.1243.3144.6122.0164.3115.489.335.349.740.8

us-gaap:AllocatedShareBasedCompensationExpense us-gaap:AwardType

mrna:RestrictedStockAndRestrictedStockUnitsRSU


Allocated
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value10.07.04.3033.4042.8611.8331.4971.2911.3271.015.5810.8031.091.803
Percentage of AllocatedShareBasedCompensationExpense28.623.316.914.712.09.07.46.26.25.517.65.57.615.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.20.40.02.24.321.910.77.610.16.315.81.93.86.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax mrna:RestrictedStockAndRestrictedStockUnitsRSU0.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:EmployeeStock


Allocated
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value1.01.00.7930.8780.6390.5620.5240.5190.1740.00.00.00.0
Percentage of AllocatedShareBasedCompensationExpense2.93.33.13.82.72.82.62.50.80.00.00.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.00.10.00.61.06.73.73.01.30.00.00.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:EmployeeStock0.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:EmployeeStockOption


Allocated
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value2422201820181818191726131310
Percentage of AllocatedShareBasedCompensationExpense68.673.380.081.585.488.390.191.393.094.582.494.592.484.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.61.10.012.030.8214.8130.2111.4152.8109.173.633.346.034.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:EmployeeStockOption0.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AllocatedShareBasedCompensationExpense us-gaap:IncomeStatementLocation

us-gaap:CostOfSales


Allocated
Period End2021-06-302021-03-31
Value8.04.0
Percentage of AllocatedShareBasedCompensationExpense22.913.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.20.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:CostOfSales0.00.0

us-gaap:GeneralAndAdministrativeExpense


Allocated
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value1212109.1849.228.3778.3358.1888.6267.714186.0065.9254.495
Percentage of AllocatedShareBasedCompensationExpense34.340.039.639.638.541.041.039.440.141.758.440.841.337.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.30.60.05.813.999.959.348.065.948.152.214.420.515.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:GeneralAndAdministrativeExpense0.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:ResearchAndDevelopmentExpense


Allocated
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value15141514141211121210138.7148.4287.356
Percentage of AllocatedShareBasedCompensationExpense42.946.760.460.461.559.059.060.659.958.341.659.258.762.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.30.70.08.922.2143.585.374.098.467.337.220.929.225.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ResearchAndDevelopmentExpense0.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Comprehensive Income Net Of Tax

us-gaap:ComprehensiveIncomeNetOfTax

us-gaap:ComprehensiveIncomeNetOfTax


Comprehensive
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value27951219-274.265-237.108-102.33-132.161-124.142-123.105-132.904-130.746-141.824-79.244-89.46-74.369
Percentage of ComprehensiveIncomeNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax64.262.90.0-150.2-154.2-1575.4-883.3-722.2-1015.9-815.9-400.4-189.8-310.1-256.1

Cost Of Goods And Services Sold

us-gaap:CostOfGoodsAndServicesSold

us-gaap:CostOfGoodsAndServicesSold


Cost
Period End2021-06-302021-03-31
Value750193
Percentage of CostOfGoodsAndServicesSold100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax17.210.0

Costs And Expenses

us-gaap:CostsAndExpenses

us-gaap:CostsAndExpenses


Costs
Period End2021-06-302021-03-312020-06-302020-03-31
Value1292671189139
Percentage of CostsAndExpenses100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax29.734.6284.81656.9

General And Administrative Expense

us-gaap:GeneralAndAdministrativeExpense

us-gaap:GeneralAndAdministrativeExpense


General
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value12177784836242528282738182116
Percentage of GeneralAndAdministrativeExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax2.84.00.030.755.2287.4182.3165.4218.0170.3107.344.474.156.2

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 End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value30631260-271.012-232.772-116.565-124.164-123.285-123.372-135.378-132.681-141.258-80.331-90.443-72.376
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax70.365.00.0-147.4-175.7-1480.1-877.2-723.8-1034.8-828.0-398.8-192.4-313.5-249.2

Income Tax Expense Benefit

us-gaap:IncomeTaxExpenseBenefit

us-gaap:IncomeTaxExpenseBenefit


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value283391.4730.8640.1480.066-0.169-0.178-0.324-0.0240.1680.00.1580.0
Percentage of IncomeTaxExpenseBenefit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax6.52.00.00.50.20.8-1.2-1.0-2.5-0.10.50.00.50.0

Net Income Loss

us-gaap:NetIncomeLoss

us-gaap:NetIncomeLoss


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value27801221-272.485-233.636-116.713-124.23-123.116-123.194-135.054-132.657-141.426-80.331-90.601-72.376
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax63.863.00.0-148.0-175.9-1480.9-876.0-722.7-1032.3-827.8-399.3-192.4-314.0-249.2

us-gaap:NetIncomeLoss us-gaap:StatementEquityComponents

us-gaap:RetainedEarnings


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value27801221-272.485-233.636-116.713-124.23-123.116-123.194-135.054-132.657-141.426-80.331-90.601-72.376
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax63.863.00.0-148.0-175.9-1480.9-876.0-722.7-1032.3-827.8-399.3-192.4-314.0-249.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Operating Expenses

us-gaap:OperatingExpenses

us-gaap:OperatingExpenses


Operating
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value39318813914414715715718812712510613311013595
Percentage of OperatingExpenses100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax248.9284.11659.91028.9867.71200.2985.1532.0305.5436.3366.5145.5259.8329.1315.9

Operating Income Loss

us-gaap:OperatingIncomeLoss

us-gaap:OperatingIncomeLoss


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value30621266-275.038-235.117-122.127-130.862-130.556-130.857-143.936-141.833-153.031-85.818-97.015-77.402-41.828-67.871-94.194-65.463
Percentage of OperatingIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax70.365.40.0-148.9-184.1-1559.9-928.9-767.7-1100.2-885.1-432.0-205.5-336.3-266.5-45.5-159.8-229.1-215.9

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

us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax

us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax


Other
Period End2021-06-30
Value21
Percentage of OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.5

Other Nonoperating Income Expense

us-gaap:OtherNonoperatingIncomeExpense

us-gaap:OtherNonoperatingIncomeExpense


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value-2000000.0-10000000.0-174000.0-3226000.0-1530000.0-1154000.0-2175000.0-1767000.0-1764000.0-1820000.02879000.0-1032000.0171000.0-183000.0
Percentage of OtherNonoperatingIncomeExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.0-0.50.0-2.0-2.3-13.8-15.5-10.4-13.5-11.48.1-2.50.6-0.6

Research And Development Expense

us-gaap:ResearchAndDevelopmentExpense

us-gaap:ResearchAndDevelopmentExpense


Research
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value42140175834415111511711912813015010910490
Percentage of ResearchAndDevelopmentExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax9.720.70.0218.2228.91372.5836.2702.3982.2814.8424.7261.2362.1310.4

Revenue From Contract With Customer Excluding Assessed Tax

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value43541937570157668.389141713163541282991424130
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ContractWithCustomerBasisOfPricing, us-gaap:ResearchAndDevelopmentArrangementContractToPerformForOthersByType

mrna:UpfrontPayment, mrna:ChiesiAgreement


Revenue
Period End2020-12-31
Value0.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax mrna:UpfrontPayment mrna:ChiesiAgreement0.0

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:CounterpartyName, us-gaap:ProductOrService

mrna:AstraZeneca, mrna:CollaborationArrangementIncludingArrangementsWithAffiliate


Revenue
Period End2021-06-302020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value4.0150.048161.00.5073.724
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.12.70.024.111.93.621.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.12.70.024.111.93.621.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax mrna:AstraZeneca mrna:CollaborationArrangementIncludingArrangementsWithAffiliate100.0100.0100.0100.0100.0100.0100.0

mrna:Merck, mrna:CollaborationArrangementIncludingArrangementsWithAffiliate


Revenue
Period End2021-06-302020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value4.08.0166.718111.08.1529.11
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.11.44.316.611.958.053.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.11.44.316.611.958.053.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax mrna:Merck mrna:CollaborationArrangementIncludingArrangementsWithAffiliate100.0100.0100.0100.0100.0100.0100.0

mrna:Vertex, mrna:CollaborationArrangementIncludingArrangementsWithAffiliate


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value9.09.05.8075.452.02.01.8940.504
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.20.51.03.53.023.813.53.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.20.51.03.53.023.813.53.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax mrna:Vertex mrna:CollaborationArrangementIncludingArrangementsWithAffiliate100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:MajorCustomers, us-gaap:ProductOrService, us-gaap:SupplyCommitment

mrna:UnitedStatesGovernment, us-gaap:GovernmentContract, mrna:SupplyAgreementWithUnitedStatesGovernment


Revenue
Period End2020-08-31
Value601
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax mrna:UnitedStatesGovernment us-gaap:GovernmentContract mrna:SupplyAgreementWithUnitedStatesGovernment100.0

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ProductOrService

mrna:CollaborationArrangementIncludingArrangementsWithAffiliate


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value1810.02912294.01013
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.40.55.27.743.747.775.178.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.40.55.27.743.747.775.178.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax mrna:CollaborationArrangementIncludingArrangementsWithAffiliate100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ProductOrService, us-gaap:ResearchAndDevelopmentArrangementContractToPerformForOthersByType

mrna:CollaborationArrangement, mrna:Combined2018AZAgreements


Revenue
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value150.0491.2181.60.03.50.00.812196.07.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax2.70.01.819.10.020.50.05.034.447.420.825.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax2.70.01.819.10.020.50.05.034.447.420.825.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax mrna:CollaborationArrangement mrna:Combined2018AZAgreements100.0100.0100.0100.00.0100.00.0100.0100.0100.0100.0100.0

mrna:CollaborationArrangement, mrna:MerckAgreement2015


Revenue
Period End2020-12-312020-09-302020-06-302019-12-312019-09-302019-06-302018-03-31
Value0.050.00.0-0.174-0.1880.3722.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.00.00.0-1.2-1.12.86.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.00.00.0-1.2-1.12.86.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax mrna:CollaborationArrangement mrna:MerckAgreement2015100.00.00.0100.0100.0100.0100.0

mrna:CollaborationArrangement, mrna:MerckMay2019Agreement


Revenue
Period End2020-12-312020-09-302020-06-302019-12-312019-09-302019-06-30
Value-1.575-1.074-2.35-1.469-1.657-2.139
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.3-0.7-3.5-10.5-9.7-16.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.3-0.7-3.5-10.5-9.7-16.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax mrna:CollaborationArrangement mrna:MerckMay2019Agreement100.0100.0100.0100.0100.0100.0

mrna:CollaborationArrangement, mrna:PCVSAVAgreement


Revenue
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value9.5427.792123.19.810101010101014
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.74.919.237.069.763.979.563.729.925.435.748.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.74.919.237.069.763.979.563.729.925.435.748.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax mrna:CollaborationArrangement mrna:PCVSAVAgreement100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

mrna:CollaborationArrangement, mrna:SeparateAgreementsWithMerck


Revenue
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value-1.525-1.074-2.35-2.1-1.7-1.8-1.80.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.3-0.7-3.5-25.0-12.1-10.6-13.83.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.3-0.7-3.5-25.0-12.1-10.6-13.83.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax mrna:CollaborationArrangement mrna:SeparateAgreementsWithMerck100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ResearchAndDevelopmentArrangementContractToPerformForOthersByType

mrna:StrategicCollaborationAndLicenseAgreementWithVertexPharmaceuticalsIncorporatedAndVertexPharmaceuticalsEuropeLimited


Revenue
Period End2020-12-312019-07-31
Value0.02.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax mrna:StrategicCollaborationAndLicenseAgreementWithVertexPharmaceuticalsIncorporatedAndVertexPharmaceuticalsEuropeLimited0.0100.0

mrna:VEGFExercise2016


Revenue
Period End2020-12-312020-09-302020-06-302019-12-312019-09-302019-06-30
Value0.00.0140.4370.172-0.026
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.00.022.13.11.0-0.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.00.022.13.11.0-0.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax mrna:VEGFExercise20160.00.0100.0100.0100.0100.0

Revenues

us-gaap:Revenues

us-gaap:Revenues


Revenues
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value43541937570157668.389141713163541282991424130
Percentage of Revenues100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:Revenues us-gaap:MajorCustomers, us-gaap:ProductOrService

mrna:BiomedicalAdvancedResearchAndDevelopmentAuthority, us-gaap:Grant


Revenuesus-gaap:
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value134192338143373.03.11.1351.8761.52.22.01.61.0
Percentage of Revenues3.19.959.390.855.835.822.16.714.39.46.24.85.53.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax3.19.959.390.855.835.822.16.714.39.46.24.85.53.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax mrna:BiomedicalAdvancedResearchAndDevelopmentAuthority us-gaap:Grant0.00.00.00.00.0107.10.0103.298.7100.00.0100.0100.0100.0

mrna:OtherGrantRevenue, us-gaap:Grant


Revenuesus-gaap:
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-30
Value5.02.02.8522.3760.8611.00.3942.5731.177
Percentage of Revenues0.10.10.51.51.311.92.815.19.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.10.10.51.51.311.92.815.19.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax mrna:OtherGrantRevenue us-gaap:Grant0.00.00.00.00.00.00.00.00.0

us-gaap:Revenues us-gaap:ProductOrService

mrna:CollaborationArrangement


Revenuesus-gaap:
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value1810.02912283.187109.6149.8421319161920
Percentage of Revenues0.40.55.27.742.938.071.556.475.283.056.440.668.469.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.40.55.27.742.938.071.556.475.283.056.440.668.469.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax mrna:CollaborationArrangement0.00.00.00.00.00.0100.0100.0100.0100.00.00.00.00.0

mrna:ProductSales


Revenuesus-gaap:
Period End2021-06-302021-03-31
Value41971733
Percentage of Revenues96.489.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax96.489.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax mrna:ProductSales0.00.0

us-gaap:Grant


Revenuesus-gaap:
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value139194341145373.9323.5023.7083.0531.912.6055.0953.021.579
Percentage of Revenues3.210.059.892.357.146.924.921.823.311.97.412.210.55.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax3.210.059.892.357.146.924.921.823.311.97.412.210.55.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:Grant0.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:Revenues us-gaap:ProductOrService, us-gaap:StatementGeographical

mrna:ProductSales, country:US


Revenuesus-gaap:
Period End2021-06-302021-03-31
Value20931358
Percentage of Revenues48.170.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax48.170.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax mrna:ProductSales country:US0.00.0

mrna:ProductSales, us-gaap:NonUs


Revenuesus-gaap:
Period End2021-06-302021-03-31
Value2104375
Percentage of Revenues48.319.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax48.319.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax mrna:ProductSales us-gaap:NonUs0.00.0

Assets

us-gaap:Assets

us-gaap:Assets


Assets
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value16153126947336465034862067158915901685180619621084
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Liabilities

us-gaap:Liabilities

us-gaap:Liabilities


Liabilities
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value9449885647751891539426414339346360431459
Percentage of Liabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets58.569.865.140.715.520.626.121.320.619.922.042.3

Liabilities And Stockholders Equity

us-gaap:LiabilitiesAndStockholdersEquity

us-gaap:LiabilitiesAndStockholdersEquity


Liabilities
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value16153126947336465034862067158915901685180619621084
Percentage of LiabilitiesAndStockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Stockholders Equity

us-gaap:StockholdersEquity

us-gaap:StockholdersEquity


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-312015-12-31
Value67043838256127592946164011741251133814461530-757.129-688.768-613.709-551.365-334.81-149.76
Percentage of StockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets41.530.234.959.384.579.473.978.779.480.178.00.00.00.0-50.80.00.0

us-gaap:StockholdersEquity us-gaap:StatementEquityComponents

us-gaap:AccumulatedNetGainLossFromDesignatedOrQualifyingCashFlowHedges


Stockholders
Period End2021-06-30
Value21
Percentage of StockholdersEquity0.3
Percentage of Assets0.1
Percentage of Assets us-gaap:AccumulatedNetGainLossFromDesignatedOrQualifyingCashFlowHedges0.0

us-gaap:AccumulatedNetUnrealizedInvestmentGainLoss


Stockholders
Period End2021-06-302021-03-312020-12-312019-12-312018-12-312017-12-31
Value-5.01.03.0041.804-1.32-1.157
Percentage of StockholdersEquity-0.10.00.10.2-0.10.2
Percentage of Assets-0.00.00.00.1-0.1-0.1
Percentage of Assets us-gaap:AccumulatedNetUnrealizedInvestmentGainLoss0.00.00.00.00.00.0

us-gaap:AccumulatedOtherComprehensiveIncome


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-312015-12-31
Value161.03.0044.7848.256-6.1271.8042.832.7410.591-1.32-0.922-2.009-3.15-1.157-0.403-0.566
Percentage of StockholdersEquity0.20.00.10.20.3-0.40.20.20.20.0-0.10.10.30.50.20.10.4
Percentage of Assets0.10.00.00.10.2-0.30.10.20.20.0-0.10.00.00.0-0.10.00.0
Percentage of Assets us-gaap:AccumulatedOtherComprehensiveIncome0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AdditionalPaidInCapital


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-312015-12-31
Value49314860480147264675326726692618258225562538108988371310.007
Percentage of StockholdersEquity73.6126.6187.5171.2158.7199.1227.2209.2192.9176.8165.9-14.4-14.2-13.6-13.0-9.4-0.0
Percentage of Assets30.538.365.4101.6134.1158.0167.9164.6153.2141.6129.40.00.00.06.60.00.0
Percentage of Assets us-gaap:AdditionalPaidInCapital0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:CommonStock


Stockholders
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-312015-12-31
Value0.040.040.0390.0370.0340.0330.0330.0330.0330.0060.0060.0060.0060.0060.0
Percentage of StockholdersEquity0.00.00.00.00.00.00.00.00.0-0.0-0.0-0.0-0.0-0.0-0.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of Assets us-gaap:CommonStock0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:RetainedEarnings


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-312015-12-31
Value1757-1023.0-2243.518-1971.033-1737.397-1620.684-1496.454-1369.548-1246.354-1111.3-1006.627-865.201-784.87-694.269-621.893-365.718-149.207
Percentage of StockholdersEquity26.2-26.7-87.6-71.4-59.0-98.8-127.4-109.4-93.1-76.9-65.8114.3114.0113.1112.8109.299.6
Percentage of Assets10.9-8.1-30.6-42.4-49.8-78.4-94.2-86.1-74.0-61.5-51.30.00.00.0-57.30.00.0
Percentage of Assets us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Assets Current

us-gaap:AssetsCurrent

us-gaap:AssetsCurrent


Assets
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value1096911703629735772796124911281094109711401563783
Percentage of AssetsCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets67.992.285.876.980.260.571.068.865.163.279.772.2

Cash And Cash Equivalents At Carrying Value

us-gaap:CashAndCashEquivalentsAtCarryingValue

us-gaap:CashAndCashEquivalentsAtCarryingValue


Cash
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-312015-12-31
Value560354422623150517613912351731515026581671409013450159
Percentage of CashAndCashEquivalentsAtCarryingValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets34.742.935.832.450.518.914.810.99.027.833.60.00.00.012.40.00.0

Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents


Cash
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-31
Value5614545326351517177340324718516351467017915210214761
Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets34.843.035.932.650.919.515.611.79.728.534.20.00.00.013.60.0

Accounts Receivable Net Current

us-gaap:AccountsReceivableNetCurrent

us-gaap:AccountsReceivableNetCurrent


Accounts
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value202032101390190335.6175.0322.83.4985.6461111
Percentage of AccountsReceivableNetCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets12.525.319.04.11.00.30.30.20.20.30.61.1

Inventory Net

us-gaap:InventoryNet

us-gaap:InventoryNet


Inventory
Period End2021-06-302021-03-312020-12-31
Value64349446
Percentage of InventoryNet100.0100.0100.0
Percentage of Assets4.03.90.6

Other Assets Current

us-gaap:OtherAssetsCurrent

us-gaap:OtherAssetsCurrent


Other
Period End2021-06-302020-12-31
Value3821
Percentage of OtherAssetsCurrent100.0100.0
Percentage of Assets0.20.3

Prepaid Expense And Other Assets Current

us-gaap:PrepaidExpenseAndOtherAssetsCurrent

us-gaap:PrepaidExpenseAndOtherAssetsCurrent


Prepaid
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value3162642521094523192622252812
Percentage of PrepaidExpenseAndOtherAssetsCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets2.02.13.42.41.31.21.21.71.31.41.41.2

Operating Lease Right Of Use Asset

us-gaap:OperatingLeaseRightOfUseAsset

us-gaap:OperatingLeaseRightOfUseAsset


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-01-01
Value104899091921008663
Percentage of OperatingLeaseRightOfUseAsset100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.60.71.22.02.64.95.43.1

us-gaap:OperatingLeaseRightOfUseAsset us-gaap:LeaseContractualTerm

mrna:EmbeddedLeases


Operating
Period End2021-06-302021-03-312020-12-31
Value2964462
Percentage of OperatingLeaseRightOfUseAsset284.649.469.1
Percentage of Assets1.80.30.8
Percentage of Assets mrna:EmbeddedLeases0.00.00.0

Other Assets Noncurrent

us-gaap:OtherAssetsNoncurrent

us-gaap:OtherAssetsNoncurrent


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value2000000.01000000.01880000.02047000.01570000.01736000.01931000.02094000.02558000.02438000.02644000.04586000.0
Percentage of OtherAssetsNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.10.10.10.20.10.10.4

Accounts Payable Current

us-gaap:AccountsPayableCurrent

us-gaap:AccountsPayableCurrent


Accounts
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value778.0182018117.091129383120
Percentage of AccountsPayableCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.50.10.30.40.50.50.40.71.82.11.61.9

Accrued Liabilities Current

us-gaap:AccruedLiabilitiesCurrent

us-gaap:AccruedLiabilitiesCurrent


Accrued
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value8487534692088955676044427972
Percentage of AccruedLiabilitiesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets5.25.96.44.52.62.74.33.82.62.34.06.7

Contract With Customer Liability Current

us-gaap:ContractWithCustomerLiabilityCurrent

us-gaap:ContractWithCustomerLiabilityCurrent


Contract
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value7302753138671234455863708373109
Percentage of ContractWithCustomerLiabilityCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets45.259.352.726.51.32.84.04.44.94.15.6

us-gaap:ContractWithCustomerLiabilityCurrent us-gaap:MajorCustomers, us-gaap:ProductOrService, us-gaap:SupplyCommitment

mrna:UnitedStatesGovernment, us-gaap:GovernmentContract, mrna:SupplyAgreementWithUnitedStatesGovernment


Contract
Period End2020-09-30
Value601
Percentage of ContractWithCustomerLiabilityCurrent48.7
Percentage of Assets12.9
Percentage of Assets mrna:UnitedStatesGovernment us-gaap:GovernmentContract mrna:SupplyAgreementWithUnitedStatesGovernment0.0

us-gaap:ContractWithCustomerLiabilityCurrent us-gaap:ProductOrService

mrna:CustomerDeposits


Contract
Period End2021-03-312020-12-31
Value75003800
Percentage of ContractWithCustomerLiabilityCurrent99.698.3
Percentage of Assets59.151.8
Percentage of Assets mrna:CustomerDeposits0.00.0

us-gaap:ContractWithCustomerLiabilityCurrent us-gaap:SupplyCommitment

mrna:InternationalSupplyAgreements


Contract
Period End2020-09-30
Value569
Percentage of ContractWithCustomerLiabilityCurrent46.1
Percentage of Assets12.2
Percentage of Assets mrna:InternationalSupplyAgreements0.0

Liabilities Current

us-gaap:LiabilitiesCurrent

us-gaap:LiabilitiesCurrent


Liabilities
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value8840844143881473161134143147161159222191
Percentage of LiabilitiesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets54.766.559.831.74.66.59.09.39.68.811.417.7

Operating Lease Liability Current

us-gaap:OperatingLeaseLiabilityCurrent

us-gaap:OperatingLeaseLiabilityCurrent


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-01-01
Value117.05.9724.7314.1933.9873.5846.455
Percentage of OperatingLeaseLiabilityCurrent100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.10.10.10.10.10.20.20.3

Other Accrued Liabilities Current

us-gaap:OtherAccruedLiabilitiesCurrent

us-gaap:OtherAccruedLiabilitiesCurrent


Other
Period End2021-06-302020-12-31
Value3925
Percentage of OtherAccruedLiabilitiesCurrent100.0100.0
Percentage of Assets0.20.3

Other Liabilities Current

us-gaap:OtherLiabilitiesCurrent

us-gaap:OtherLiabilitiesCurrent


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value613149339.7028.3829.6865.0635.8354.3884.5093.4641.282
Percentage of OtherLiabilitiesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets3.81.20.50.20.20.50.30.40.30.20.20.1

Taxes Payable Current

us-gaap:TaxesPayableCurrent

us-gaap:TaxesPayableCurrent


Taxes
Period End2021-06-30
Value377
Percentage of TaxesPayableCurrent100.0
Percentage of Assets2.3

Other Liabilities Noncurrent

us-gaap:OtherLiabilitiesNoncurrent

us-gaap:OtherLiabilitiesNoncurrent


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value1000000.02000000.01853000.02183000.01224000.01247000.0138000.0161000.0188000.0213000.0258000.01530000.0
Percentage of OtherLiabilitiesNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.10.00.00.00.00.00.1

Operating Lease Liability Noncurrent

us-gaap:OperatingLeaseLiabilityNoncurrent

us-gaap:OperatingLeaseLiabilityNoncurrent


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-01-01
Value105969798991089364
Percentage of OperatingLeaseLiabilityNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.70.81.32.12.95.35.93.2

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
Value23161515
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearTwo100.0100.0100.0100.0
Percentage of Assets0.10.10.20.3

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
Value16161616
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearThree100.0100.0100.0100.0
Percentage of Assets0.10.10.20.3

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
Value17171616
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearFour100.0100.0100.0100.0
Percentage of Assets0.10.10.20.3

Lessee Operating Lease Liability Payments Due Year Five

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFive

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFive


Lessee
Period End2020-12-312020-09-30
Value16110
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearFive100.0100.0
Percentage of Assets0.22.4

Lessee Operating Lease Liability Payments Due After Year Five

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive


Lessee
Period End2020-12-31
Value93
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive100.0
Percentage of Assets1.3

Operating Lease Liability

us-gaap:OperatingLeaseLiability

us-gaap:OperatingLeaseLiability


Operating
Period End2021-06-302021-03-312020-12-312020-09-302019-12-31
Value11610310310397
Percentage of OperatingLeaseLiability100.0100.0100.0100.0100.0
Percentage of Assets0.70.81.42.26.1

us-gaap:OperatingLeaseLiability us-gaap:LeaseContractualTerm

mrna:EmbeddedLeases


Operating
Period End2021-06-302021-03-312020-12-31
Value2517324
Percentage of OperatingLeaseLiability216.470.923.5
Percentage of Assets1.60.60.3
Percentage of Assets mrna:EmbeddedLeases0.00.00.0

Lessee Operating Lease Liability Payments Due

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDue

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDue


Lessee
Period End2021-06-302021-03-312020-12-312020-09-30
Value182171173176
Percentage of LesseeOperatingLeaseLiabilityPaymentsDue100.0100.0100.0100.0
Percentage of Assets1.11.32.43.8

Lessee Operating Lease Liability Undiscounted Excess Amount

us-gaap:LesseeOperatingLeaseLiabilityUndiscountedExcessAmount

us-gaap:LesseeOperatingLeaseLiabilityUndiscountedExcessAmount


Lessee
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-31
Value66687072758375
Percentage of LesseeOperatingLeaseLiabilityUndiscountedExcessAmount100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.40.51.01.62.24.04.8

us-gaap:LesseeOperatingLeaseLiabilityUndiscountedExcessAmount us-gaap:RealEstateAndAccumulatedDepreciationDescriptionOfProperty, us-gaap:StatementGeographical

mrna:MTCSouth, mrna:NorwoodMassachusetts


Lessee
Period End2021-03-312020-09-302020-06-30
Value3391010
Percentage of LesseeOperatingLeaseLiabilityUndiscountedExcessAmount498.514.113.7
Percentage of Assets2.70.20.3
Percentage of Assets mrna:MTCSouth mrna:NorwoodMassachusetts0.00.00.0

mrna:MTCSouthMTCNorthAndMTCEast, mrna:NorwoodMassachusetts


Lessee
Period End2021-06-30
Value445
Percentage of LesseeOperatingLeaseLiabilityUndiscountedExcessAmount674.2
Percentage of Assets2.8
Percentage of Assets mrna:MTCSouthMTCNorthAndMTCEast mrna:NorwoodMassachusetts0.0

Stockholders Equity

us-gaap:StockholdersEquity

us-gaap:StockholdersEquity


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-312015-12-31
Value67043838256127592946164011741251133814461530-757.129-688.768-613.709-551.365-334.81-149.76
Percentage of StockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets41.530.234.959.384.579.473.978.779.480.178.00.00.00.0-50.80.00.0

us-gaap:StockholdersEquity us-gaap:StatementEquityComponents

us-gaap:AccumulatedNetGainLossFromDesignatedOrQualifyingCashFlowHedges


Stockholders
Period End2021-06-30
Value21
Percentage of StockholdersEquity0.3
Percentage of Assets0.1
Percentage of Assets us-gaap:AccumulatedNetGainLossFromDesignatedOrQualifyingCashFlowHedges0.0

us-gaap:AccumulatedNetUnrealizedInvestmentGainLoss


Stockholders
Period End2021-06-302021-03-312020-12-312019-12-312018-12-312017-12-31
Value-5.01.03.0041.804-1.32-1.157
Percentage of StockholdersEquity-0.10.00.10.2-0.10.2
Percentage of Assets-0.00.00.00.1-0.1-0.1
Percentage of Assets us-gaap:AccumulatedNetUnrealizedInvestmentGainLoss0.00.00.00.00.00.0

us-gaap:AccumulatedOtherComprehensiveIncome


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-312015-12-31
Value161.03.0044.7848.256-6.1271.8042.832.7410.591-1.32-0.922-2.009-3.15-1.157-0.403-0.566
Percentage of StockholdersEquity0.20.00.10.20.3-0.40.20.20.20.0-0.10.10.30.50.20.10.4
Percentage of Assets0.10.00.00.10.2-0.30.10.20.20.0-0.10.00.00.0-0.10.00.0
Percentage of Assets us-gaap:AccumulatedOtherComprehensiveIncome0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AdditionalPaidInCapital


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-312015-12-31
Value49314860480147264675326726692618258225562538108988371310.007
Percentage of StockholdersEquity73.6126.6187.5171.2158.7199.1227.2209.2192.9176.8165.9-14.4-14.2-13.6-13.0-9.4-0.0
Percentage of Assets30.538.365.4101.6134.1158.0167.9164.6153.2141.6129.40.00.00.06.60.00.0
Percentage of Assets us-gaap:AdditionalPaidInCapital0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:CommonStock


Stockholders
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-312015-12-31
Value0.040.040.0390.0370.0340.0330.0330.0330.0330.0060.0060.0060.0060.0060.0
Percentage of StockholdersEquity0.00.00.00.00.00.00.00.00.0-0.0-0.0-0.0-0.0-0.0-0.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of Assets us-gaap:CommonStock0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:RetainedEarnings


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-312015-12-31
Value1757-1023.0-2243.518-1971.033-1737.397-1620.684-1496.454-1369.548-1246.354-1111.3-1006.627-865.201-784.87-694.269-621.893-365.718-149.207
Percentage of StockholdersEquity26.2-26.7-87.6-71.4-59.0-98.8-127.4-109.4-93.1-76.9-65.8114.3114.0113.1112.8109.299.6
Percentage of Assets10.9-8.1-30.6-42.4-49.8-78.4-94.2-86.1-74.0-61.5-51.30.00.00.0-57.30.00.0
Percentage of Assets us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Common Stock Value

us-gaap:CommonStockValue

us-gaap:CommonStockValue


Common
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value40000.040000.039000.037000.034000.033000.033000.033000.033000.02752.2
Percentage of CommonStockValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.0

Additional Paid In Capital

us-gaap:AdditionalPaidInCapital

us-gaap:AdditionalPaidInCapital


Additional
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value4931486048014726467532672669261825822556253871
Percentage of AdditionalPaidInCapital100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets30.538.365.4101.6134.1158.0167.9164.6153.2141.6129.46.6

Retained Earnings Accumulated Deficit

us-gaap:RetainedEarningsAccumulatedDeficit

us-gaap:RetainedEarningsAccumulatedDeficit


Retained
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value1757-1023.0-2243.518-1971.033-1737.397-1620.684-1500.0-1369.548-1246.354-1111.3-1006.627-621.893
Percentage of RetainedEarningsAccumulatedDeficit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets10.9-8.1-30.6-42.4-49.8-78.4-94.4-86.1-74.0-61.5-51.3-57.3

Accumulated Other Comprehensive Income Loss Net Of Tax

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax


Accumulated
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value161.03.0044.7848.256-6.1271.8042.832.7410.591-1.32-1.157
Percentage of AccumulatedOtherComprehensiveIncomeLossNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.10.00.00.10.2-0.30.10.20.20.0-0.1-0.1

Stock Issued During Period Value New Issues

us-gaap:StockIssuedDuringPeriodValueNewIssues

us-gaap:StockIssuedDuringPeriodValueNewIssues


Stock
Period End2020-12-312020-09-302020-06-302020-03-312018-12-312018-09-302018-06-302018-03-31
Value-0.0340.013035495620.00.00.152
Percentage of StockIssuedDuringPeriodValueNewIssues100.00.0100.0100.0100.00.00.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.0

us-gaap:StockIssuedDuringPeriodValueNewIssues us-gaap:StatementEquityComponents

us-gaap:AdditionalPaidInCapital


Stock
Period End2020-12-312020-09-302020-06-302020-03-312018-03-31
Value-0.0350.013035490.152
Percentage of StockIssuedDuringPeriodValueNewIssues102.90.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.0
Percentage of Assets us-gaap:AdditionalPaidInCapital0.00.00.00.00.0

us-gaap:CommonStock


Stock
Period End2020-12-312020-09-302020-06-302020-03-31
Value0.0010.00.0010.003
Percentage of StockIssuedDuringPeriodValueNewIssues-2.90.00.00.0
Percentage of Assets0.00.00.00.0
Percentage of Assets us-gaap:CommonStock0.00.00.00.0

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
Value3530252323202020211831141411
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
Value3530252323202020211831141411
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

Net Cash Provided By Used In Operating Activities

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetCashProvidedByUsedInOperatingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value406329711264892-23.875-106.191-95.773-107.048-112.22-143.927-91.02-80.211-48.249-111.385
Percentage of NetCashProvidedByUsedInOperatingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax93.3153.4221.5565.4-36.0-1265.8-681.4-628.0-857.8-898.1-257.0-192.1-167.2-383.6

Net Cash Provided By Used In Investing Activities

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:NetCashProvidedByUsedInInvestingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value-3878.0-180.0-190.129-1178.2612-316.018130113-246.901-11.7596.795116-11.645-483.704
Percentage of NetCashProvidedByUsedInInvestingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-89.1-9.3-33.3-746.218.8-3767.1927.4665.1-1887.2-73.419.2278.0-40.4-1665.7

Net Cash Provided By Used In Financing Activities

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:NetCashProvidedByUsedInFinancingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value-24.0264429138157827157.812-0.048575-9.43110549
Percentage of NetCashProvidedByUsedInFinancingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.61.37.718.82081.86890.6196.392.559.7-0.31625.9-22.6382.51894.0

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

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect


Cash
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value16128171118-255.78613691556222-351.309-155.7344912650-45.094
Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax3.7145.4195.9-162.02064.61857.7442.3129.6-2685.2-971.81386.463.3174.9-155.3

Deferred Income Tax Expense Benefit

us-gaap:DeferredIncomeTaxExpenseBenefit

us-gaap:DeferredIncomeTaxExpenseBenefit


Deferred
Period End2021-06-302021-03-31
Value-22000000.0-50000000.0
Percentage of DeferredIncomeTaxExpenseBenefit100.0100.0

Depreciation Depletion And Amortization

us-gaap:DepreciationDepletionAndAmortization

us-gaap:DepreciationDepletionAndAmortization


Depreciation
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value69157.7068.57.67.4498.97.37.57.37.3886.55.95.153
Percentage of DepreciationDepletionAndAmortization100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Increase Decrease In Accounts Payable

us-gaap:IncreaseDecreaseInAccountsPayable

us-gaap:IncreaseDecreaseInAccountsPayable


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value59-15.0-1.7582.169.1422.331-4.779-17.714-3.2021.731142.058-2.8071.467
Percentage of IncreaseDecreaseInAccountsPayable100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Increase Decrease In Accounts Receivable

us-gaap:IncreaseDecreaseInAccountsReceivable

us-gaap:IncreaseDecreaseInAccountsReceivable


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value-1190.018191200157270.5852.232-0.698-2.148-6.041.841-1.5473.387-3.876
Percentage of IncreaseDecreaseInAccountsReceivable100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Increase Decrease In Inventories

us-gaap:IncreaseDecreaseInInventories

us-gaap:IncreaseDecreaseInInventories


Increase
Period End2021-06-302021-03-31
Value148448
Percentage of IncreaseDecreaseInInventories100.0100.0

Net Cash Provided By Used In Operating Activities

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetCashProvidedByUsedInOperatingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value406329711264892-23.875-106.191-95.773-107.048-112.22-143.927-91.02-80.211-48.249-111.385
Percentage of NetCashProvidedByUsedInOperatingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax93.3153.4221.5565.4-36.0-1265.8-681.4-628.0-857.8-898.1-257.0-192.1-167.2-383.6

Net Income Loss

us-gaap:NetIncomeLoss

us-gaap:NetIncomeLoss


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value27801221-272.485-233.636-116.713-124.23-123.116-123.194-135.054-132.657-141.426-80.331-90.601-72.376
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax63.863.0-47.7-148.0-175.9-1480.9-876.0-722.7-1032.3-827.8-399.3-192.4-314.0-249.2

us-gaap:NetIncomeLoss us-gaap:StatementEquityComponents

us-gaap:RetainedEarnings


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value27801221-272.485-233.636-116.713-124.23-123.116-123.194-135.054-132.657-141.426-80.331-90.601-72.376
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax63.863.0-47.7-148.0-175.9-1480.9-876.0-722.7-1032.3-827.8-399.3-192.4-314.0-249.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Share Based Compensation

us-gaap:ShareBasedCompensation

us-gaap:ShareBasedCompensation


Share
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value3530252323202020211831141411
Percentage of ShareBasedCompensation100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Net Cash Provided By Used In Investing Activities

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:NetCashProvidedByUsedInInvestingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value-3878.0-180.0-190.129-1178.2612-316.018130113-246.901-11.7596.795116-11.645-483.704
Percentage of NetCashProvidedByUsedInInvestingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-89.1-9.3-33.3-746.218.8-3767.1927.4665.1-1887.2-73.419.2278.0-40.4-1665.7

Payments To Acquire Property Plant And Equipment

us-gaap:PaymentsToAcquirePropertyPlantAndEquipment

us-gaap:PaymentsToAcquirePropertyPlantAndEquipment


Payments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value30352319186.2236.6626.711107.59513263431
Percentage of PaymentsToAcquirePropertyPlantAndEquipment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Net Cash Provided By Used In Financing Activities

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:NetCashProvidedByUsedInFinancingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value-24.0264429138157827157.812-0.048575-9.43110549
Percentage of NetCashProvidedByUsedInFinancingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.61.37.718.82081.86890.6196.392.559.7-0.31625.9-22.6382.51894.0

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

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber


Share
Period End2021-06-302021-03-312020-12-312020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value3032343944454851535033
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

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

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice


Share
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value22.9821.3217.1416.4915.5215.0613.8213.4313.1412.9212.169.31
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

us-gaap:RestrictedStockUnitsRSU


Share
Period End2021-06-302021-03-312019-12-312019-09-302018-03-31
Value90000.0460000.036042.0610810.0558210.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod100.0100.0100.0100.0100.0

Deferred Tax Assets Net

us-gaap:DeferredTaxAssetsNet

us-gaap:DeferredTaxAssetsNet


Deferred
Period End2020-12-312019-12-312018-12-312017-12-31
Value5036159.485
Percentage of DeferredTaxAssetsNet100.0100.0100.0100.0

Unrecognized Tax Benefits

us-gaap:UnrecognizedTaxBenefits

us-gaap:UnrecognizedTaxBenefits


Unrecognized
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value141000.0141000.0141000.0940000.0906000.0
Percentage of UnrecognizedTaxBenefits100.0100.0100.0100.0100.0

Deferred Tax Assets Valuation Allowance

us-gaap:DeferredTaxAssetsValuationAllowance

us-gaap:DeferredTaxAssetsValuationAllowance


Deferred
Period End2020-12-312019-12-312018-12-312017-12-31
Value823470308198
Percentage of DeferredTaxAssetsValuationAllowance100.0100.0100.0100.0

mrna:ChargesToFinancingLeaseLiabilities

mrna:ChargesToFinancingLeaseLiabilities


Charges
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value-60000000.0-2000000.0-6254000.0-6000.0-196000.0241000.0230000.0258000.0247000.0236000.0
Percentage of ChargesToFinancingLeaseLiabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

mrna:ContractWithCustomerAssetDeductionsDuringPeriod us-gaap:ProductOrService

mrna:ContractWithCustomerAssetDeductionsDuringPeriod

mrna:CollaborationArrangementIncludingArrangementsWithAffiliate


Contract
Period End2021-06-302021-03-31
Value142.0
Percentage of ContractWithCustomerAssetDeductionsDuringPeriod100.0100.0

mrna:ContractWithCustomerLiabilityDeductionsDuringPeriod

mrna:ContractWithCustomerLiabilityDeductionsDuringPeriod


Contract
Period End2021-06-302021-03-312020-12-312020-09-30
Value193280811413
Percentage of ContractWithCustomerLiabilityDeductionsDuringPeriod100.0100.0100.0100.0

mrna:ContractWithCustomerLiabilityDeductionsDuringPeriod us-gaap:ProductOrService

mrna:CollaborationArrangement


Contract
Period End2021-06-302021-03-31
Value1810.0
Percentage of ContractWithCustomerLiabilityDeductionsDuringPeriod0.91.2

mrna:CollaborationArrangementIncludingArrangementsWithAffiliate


Contract
Period End2021-06-302021-03-31
Value1810.0
Percentage of ContractWithCustomerLiabilityDeductionsDuringPeriod0.91.2

mrna:ProductSales


Contract
Period End2021-06-302021-03-31
Value1909796
Percentage of ContractWithCustomerLiabilityDeductionsDuringPeriod98.898.5

us-gaap:Grant


Contract
Period End2021-06-302021-03-31
Value5.02.0
Percentage of ContractWithCustomerLiabilityDeductionsDuringPeriod0.30.2

mrna:FinanceLeaseCost

mrna:FinanceLeaseCost


Finance
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value3.9643.2111.9891.7381.7461.7171.7071.696
Percentage of FinanceLeaseCost100.0100.0100.0100.0100.0100.0100.0100.0

mrna:IncreaseDecreaseInRightOfUseAssetOperatingLeases

mrna:IncreaseDecreaseInRightOfUseAssetOperatingLeases


Increase
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-31
Value16-2.00.73-1.732144.395.2-1.62
Percentage of IncreaseDecreaseInRightOfUseAssetOperatingLeases100.0100.0100.0100.0100.0100.0100.0100.0

mrna:LeasesImputedInterestRate us-gaap:RealEstateAndAccumulatedDepreciationDescriptionOfProperty, us-gaap:StatementGeographical

mrna:LeasesImputedInterestRate

mrna:MTCSouth, mrna:NorwoodMassachusetts


Leases
Period End2021-06-302021-03-312020-12-31
Value017.20
Percentage of LeasesImputedInterestRate0.0100.00.0

mrna:LeasesIncrementalBorrowingRate us-gaap:RealEstateAndAccumulatedDepreciationDescriptionOfProperty, us-gaap:StatementGeographical

mrna:LeasesIncrementalBorrowingRate

mrna:MTCNorth, mrna:NorwoodMassachusetts


Leases
Period End2021-06-302021-03-312020-12-312020-03-31
Value08.200.6
Percentage of LeasesIncrementalBorrowingRate0.0100.00.0100.0

mrna:LesseeFinanceLeaseExpense

mrna:LesseeFinanceLeaseExpense


Lessee
Period End2020-12-312020-09-302019-12-312019-09-30
Value1265000.0-6000.0230000.0258000.0
Percentage of LesseeFinanceLeaseExpense100.0100.0100.0100.0

mrna:NumberOfDosesOfVaccineCandidate us-gaap:SubsequentEventType

mrna:NumberOfDosesOfVaccineCandidate

us-gaap:SubsequentEvent


Number
Period End2021-02-26
Value125
Percentage of NumberOfDosesOfVaccineCandidate100.0

mrna:NumberOfDosesOfVaccineCandidate us-gaap:SubsequentEventType, us-gaap:SupplyCommitment

us-gaap:SubsequentEvent, mrna:SupplyAgreementWithInternationalGovernmentAgency


Number
Period End2020-10-30
Value50
Percentage of NumberOfDosesOfVaccineCandidate0.0

mrna:OperatingLeaseLiabilities

mrna:OperatingLeaseLiabilities


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value10.0-2.0-2.6250.41-1.23715-0.828105.243-1.848
Percentage of OperatingLeaseLiabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

mrna:RevenueFromGrantsMaximumAward us-gaap:MajorCustomers

mrna:RevenueFromGrantsMaximumAward

mrna:BiomedicalAdvancedResearchAndDevelopmentAuthority


Revenue
Period End2021-06-302021-03-312020-04-302016-09-30
Value-883.01000483125
Percentage of RevenueFromGrantsMaximumAward100.0100.0100.0100.0

mrna:DefenseAdvancedResearchProjectsAgency


Revenue
Period End2020-09-302020-03-312019-12-312019-09-302019-06-302019-03-312013-10-31
Value56190.00.00.01924
Percentage of RevenueFromGrantsMaximumAward0.00.00.00.00.00.00.0

mrna:RevenueFromGrantsMaximumAward us-gaap:MajorCustomers, us-gaap:Range

mrna:BiomedicalAdvancedResearchAndDevelopmentAuthority, srt:Maximum


Revenue
Period End2020-12-31
Value0.0
Percentage of RevenueFromGrantsMaximumAward0.0

mrna:BiomedicalAdvancedResearchAndDevelopmentAuthority, srt:Minimum


Revenue
Period End2020-12-31
Value0.0
Percentage of RevenueFromGrantsMaximumAward0.0

mrna:RevenueFromGrantsMaximumAward us-gaap:MajorCustomers, us-gaap:SubsequentEventType

mrna:BiomedicalAdvancedResearchAndDevelopmentAuthority, us-gaap:SubsequentEvent


Revenue
Period End2021-04-182020-07-26
Value1300954
Percentage of RevenueFromGrantsMaximumAward0.00.0

mrna:RevenueFromGrantsPotentialReimbursement us-gaap:MajorCustomers

mrna:RevenueFromGrantsPotentialReimbursement

mrna:BiomedicalAdvancedResearchAndDevelopmentAuthority


Revenue
Period End2021-04-30
Value236
Percentage of RevenueFromGrantsPotentialReimbursement100.0

mrna:RevenueFromGrantsPotentialReimbursement us-gaap:MajorCustomers, us-gaap:SubsequentEventType

mrna:BiomedicalAdvancedResearchAndDevelopmentAuthority, us-gaap:SubsequentEvent


Revenue
Period End2021-04-18
Value236
Percentage of RevenueFromGrantsPotentialReimbursement0.0

mrna:RightOfUseAssetsReducedThroughLeaseModificationsAndReassessments

mrna:RightOfUseAssetsReducedThroughLeaseModificationsAndReassessments


Right
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value0.00.06.7550.0-13.525160.00.219
Percentage of RightOfUseAssetsReducedThroughLeaseModificationsAndReassessments0.00.0100.00.0100.0100.00.0100.0

mrna:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageGrantDateFairValue

mrna:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageGrantDateFairValue


Share
Period End2021-06-302021-03-312020-12-31
Value0.448.160.36
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageGrantDateFairValue100.0100.0100.0

mrna:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriodWeightedAverageGrantDateFairValue

mrna:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriodWeightedAverageGrantDateFairValue


Share
Period End2021-06-302021-03-312020-12-31
Value2.9211.410.17
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriodWeightedAverageGrantDateFairValue100.0100.0100.0

us-gaap:CapitalExpendituresIncurredButNotYetPaid

us-gaap:CapitalExpendituresIncurredButNotYetPaid


Capital
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value24214.3374.072.66.612.813-4.211-8.053140.124-15.413-0.34628
Percentage of CapitalExpendituresIncurredButNotYetPaid100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ContractWithCustomerAssetCumulativeCatchUpAdjustmentToRevenueChangeInMeasureOfProgress us-gaap:ProductOrService

us-gaap:ContractWithCustomerAssetCumulativeCatchUpAdjustmentToRevenueChangeInMeasureOfProgress

mrna:CollaborationArrangementIncludingArrangementsWithAffiliate


Contract
Period End2021-03-31
Value5.0
Percentage of ContractWithCustomerAssetCumulativeCatchUpAdjustmentToRevenueChangeInMeasureOfProgress100.0

us-gaap:ContractWithCustomerLiabilityChangeInTimeframePerformanceObligationSatisfiedRevenueRecognized us-gaap:ProductOrService

us-gaap:ContractWithCustomerLiabilityChangeInTimeframePerformanceObligationSatisfiedRevenueRecognized

mrna:CollaborationArrangementIncludingArrangementsWithAffiliate


Contract
Period End2020-12-31
Value7104000.0
Percentage of ContractWithCustomerLiabilityChangeInTimeframePerformanceObligationSatisfiedRevenueRecognized100.0

us-gaap:ContractWithCustomerLiabilityCumulativeCatchUpAdjustmentToRevenueChangeInEstimateOfTransactionPrice

us-gaap:ContractWithCustomerLiabilityCumulativeCatchUpAdjustmentToRevenueChangeInEstimateOfTransactionPrice


Contract
Period End2020-12-31
Value-1.6
Percentage of ContractWithCustomerLiabilityCumulativeCatchUpAdjustmentToRevenueChangeInEstimateOfTransactionPrice100.0

us-gaap:ContractWithCustomerLiabilityCumulativeCatchUpAdjustmentToRevenueChangeInEstimateOfTransactionPrice us-gaap:ContractWithCustomerBasisOfPricing, us-gaap:ResearchAndDevelopmentArrangementContractToPerformForOthersByType

mrna:ClinicalSupplyReimbursement, mrna:PCVSAVAgreement


Contract
Period End2020-12-312020-06-302020-03-31
Value0.00.30.3
Percentage of ContractWithCustomerLiabilityCumulativeCatchUpAdjustmentToRevenueChangeInEstimateOfTransactionPrice-0.00.00.0

mrna:VariableConsideration, mrna:VEGFExercise2016


Contract
Period End2020-12-312020-09-302020-06-302020-03-31
Value0.00.00.02.4
Percentage of ContractWithCustomerLiabilityCumulativeCatchUpAdjustmentToRevenueChangeInEstimateOfTransactionPrice-0.00.00.00.0

us-gaap:ContractWithCustomerLiabilityCumulativeCatchUpAdjustmentToRevenueChangeInEstimateOfTransactionPrice us-gaap:ProductOrService, us-gaap:ResearchAndDevelopmentArrangementContractToPerformForOthersByType

mrna:CollaborationArrangement, mrna:Combined2018AZAgreements


Contract
Period End2020-12-312020-09-302020-06-302020-03-31
Value111.41.41.4
Percentage of ContractWithCustomerLiabilityCumulativeCatchUpAdjustmentToRevenueChangeInEstimateOfTransactionPrice-693.80.00.00.0

mrna:CollaborationArrangement, mrna:PCVSAVAgreement


Contract
Period End2020-12-312020-09-302020-06-302020-03-31
Value3.53.50.03.5
Percentage of ContractWithCustomerLiabilityCumulativeCatchUpAdjustmentToRevenueChangeInEstimateOfTransactionPrice-218.80.00.00.0

us-gaap:ContractWithCustomerLiabilityCumulativeCatchUpAdjustmentToRevenueChangeInEstimateOfTransactionPrice us-gaap:ResearchAndDevelopmentArrangementContractToPerformForOthersByType

mrna:Combined2018AZAgreements


Contract
Period End2020-12-312020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value7.7-2.72.70.01.00.00.3
Percentage of ContractWithCustomerLiabilityCumulativeCatchUpAdjustmentToRevenueChangeInEstimateOfTransactionPrice-481.20.00.00.00.00.00.0

mrna:MerckAgreement2015


Contract
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value1.5751.074-4.4-2.1-1.5-1.7-2.10.0
Percentage of ContractWithCustomerLiabilityCumulativeCatchUpAdjustmentToRevenueChangeInEstimateOfTransactionPrice-98.40.00.00.00.00.00.00.0

mrna:StrategicCollaborationAndLicenseAgreementWithVertexPharmaceuticalsIncorporatedAndVertexPharmaceuticalsEuropeLimited


Contract
Period End2020-12-312019-06-302019-03-31
Value-6.60.00.0
Percentage of ContractWithCustomerLiabilityCumulativeCatchUpAdjustmentToRevenueChangeInEstimateOfTransactionPrice412.50.00.0

mrna:VEGFExercise2016


Contract
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-03-31
Value0.00.40.40.40.32.00.0
Percentage of ContractWithCustomerLiabilityCumulativeCatchUpAdjustmentToRevenueChangeInEstimateOfTransactionPrice-0.00.00.00.00.00.00.0

us-gaap:ContractWithCustomerLiabilityCumulativeCatchUpAdjustmentToRevenueChangeInMeasureOfProgress

us-gaap:ContractWithCustomerLiabilityCumulativeCatchUpAdjustmentToRevenueChangeInMeasureOfProgress


Contract
Period End2021-06-302021-03-312020-12-312020-09-30
Value1699447427161201
Percentage of ContractWithCustomerLiabilityCumulativeCatchUpAdjustmentToRevenueChangeInMeasureOfProgress100.0100.0100.0100.0

us-gaap:ContractWithCustomerLiabilityCumulativeCatchUpAdjustmentToRevenueChangeInMeasureOfProgress us-gaap:ProductOrService

mrna:CollaborationArrangement


Contract
Period End2021-06-302021-03-31
Value135.0
Percentage of ContractWithCustomerLiabilityCumulativeCatchUpAdjustmentToRevenueChangeInMeasureOfProgress0.80.1

mrna:CollaborationArrangementIncludingArrangementsWithAffiliate


Contract
Period End2021-06-302021-03-31
Value135.0
Percentage of ContractWithCustomerLiabilityCumulativeCatchUpAdjustmentToRevenueChangeInMeasureOfProgress0.80.1

mrna:ProductSales


Contract
Period End2021-06-302021-03-31
Value16784467
Percentage of ContractWithCustomerLiabilityCumulativeCatchUpAdjustmentToRevenueChangeInMeasureOfProgress98.899.8

us-gaap:Grant


Contract
Period End2021-06-302021-03-31
Value8.02.0
Percentage of ContractWithCustomerLiabilityCumulativeCatchUpAdjustmentToRevenueChangeInMeasureOfProgress0.50.0

us-gaap:ContractWithCustomerLiabilityRevenueRecognized us-gaap:ProductOrService

us-gaap:ContractWithCustomerLiabilityRevenueRecognized

mrna:CollaborationArrangementIncludingArrangementsWithAffiliate


Contract
Period End2020-12-312020-09-30
Value2213
Percentage of ContractWithCustomerLiabilityRevenueRecognized100.0100.0

us-gaap:ContractWithCustomerLiabilityRevenueRecognized us-gaap:ResearchAndDevelopmentArrangementContractToPerformForOthersByType

mrna:ChiesiAgreement


Contract
Period End2020-12-31
Value0.0
Percentage of ContractWithCustomerLiabilityRevenueRecognized0.0

mrna:VertexAgreement2019Agreement


Contract
Period End2020-12-312020-09-302020-06-302019-12-312019-09-302019-06-30
Value0.0010.0-0.0041.8960.5041.183
Percentage of ContractWithCustomerLiabilityRevenueRecognized0.00.00.00.00.00.0

mrna:VertexAgreements


Contract
Period End2020-12-312020-09-302020-06-302019-12-312019-09-302019-06-30
Value5.8085.4492.1921.8960.5041.183
Percentage of ContractWithCustomerLiabilityRevenueRecognized25.841.10.00.00.00.0

mrna:VertexFirst


Contract
Period End2020-12-312020-09-302020-06-302019-06-30
Value5.8075.4492.1960.0
Percentage of ContractWithCustomerLiabilityRevenueRecognized25.841.10.00.0

us-gaap:DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet us-gaap:DerivativeInstrumentRisk, us-gaap:IncomeStatementLocation

us-gaap:DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet

us-gaap:ForeignExchangeContract, us-gaap:OtherNonoperatingIncomeExpense


Derivative
Period End2021-06-30
Value-54000000.0
Percentage of DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet100.0

us-gaap:EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate

us-gaap:EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate


Effective
Period End2021-06-30
Value9.0
Percentage of EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate100.0

us-gaap:FinanceLeaseInterestExpense

us-gaap:FinanceLeaseInterestExpense


Finance
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value3506000.02843000.01877000.01665000.01656000.01644000.01634000.01623000.0
Percentage of FinanceLeaseInterestExpense100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FinanceLeaseInterestPaymentOnLiability

us-gaap:FinanceLeaseInterestPaymentOnLiability


Finance
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value3140000.02429000.01529000.01425000.01424000.01387000.01387000.01387000.0
Percentage of FinanceLeaseInterestPaymentOnLiability100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FinanceLeasePrincipalPayments

us-gaap:FinanceLeasePrincipalPayments


Finance
Period End2020-12-312020-09-302020-06-302020-03-312019-06-302019-03-31
Value-38.97632140.241-0.2360.236
Percentage of FinanceLeasePrincipalPayments100.0100.0100.0100.0100.0100.0

us-gaap:FinanceLeaseRightOfUseAssetAmortization

us-gaap:FinanceLeaseRightOfUseAssetAmortization


Finance
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value458000.0368000.0112000.073000.090000.073000.073000.073000.0
Percentage of FinanceLeaseRightOfUseAssetAmortization100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:GainLossOnSaleOfPropertyPlantEquipment

us-gaap:GainLossOnSaleOfPropertyPlantEquipment


Gain
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value49000.0-61000.0-89000.0-137000.0-246000.0-56000.05000.0-19000.0-891000.0000
Percentage of GainLossOnSaleOfPropertyPlantEquipment100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.0

us-gaap:IncreaseDecreaseInAccruedLiabilities

us-gaap:IncreaseDecreaseInAccruedLiabilities


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value8228525611233-12.9534.891194.761-32.557257.76912-37.031
Percentage of IncreaseDecreaseInAccruedLiabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInContractWithCustomerLiability

us-gaap:IncreaseDecreaseInContractWithCustomerLiability


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value-233.036662602118851-0.474-11.324-9.695-7.496-15.604-28.157-34.82-8.4766.193
Percentage of IncreaseDecreaseInContractWithCustomerLiability100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInOtherOperatingLiabilities

us-gaap:IncreaseDecreaseInOtherOperatingLiabilities


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value34793-0.6952.279-1.3275.732-7.7861.564-0.4310.4840.0560.0620.6090.183
Percentage of IncreaseDecreaseInOtherOperatingLiabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets

us-gaap:IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value9812173567.4834.305-11.1583.7220.998-3.3130.043-3.6266.6312.241
Percentage of IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:InvestmentIncomeInterest

us-gaap:InvestmentIncomeInterest


Investment
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value3.04.04.25.5717.0927.8527.9849.25210108.8946.5196.4015.209
Percentage of InvestmentIncomeInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:InvestmentIncomeNetAmortizationOfDiscountAndPremium

us-gaap:InvestmentIncomeNetAmortizationOfDiscountAndPremium


Investment
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value-8000000.0-5000000.0-5132000.0-3106000.0-1432000.0-515000.0314000.01068000.01355000.01005000.0763000.0572000.0448000.083000.0
Percentage of InvestmentIncomeNetAmortizationOfDiscountAndPremium100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OperatingLeaseCost

us-gaap:OperatingLeaseCost


Operating
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value3.9623.9624.3794.6365.4013.8723.8723.87
Percentage of OperatingLeaseCost100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OperatingLeasePayments

us-gaap:OperatingLeasePayments


Operating
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value3.7753.7383.6883.8884.7253.8673.8043.725
Percentage of OperatingLeasePayments100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentNetOfTaxPortionAttributableToParent

us-gaap:OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentNetOfTaxPortionAttributableToParent


Other
Period End2021-06-302020-06-30
Value-6.014
Percentage of OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentNetOfTaxPortionAttributableToParent100.0100.0

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

us-gaap:OtherComprehensiveIncomeLossDerivativeExcludedComponentIncreaseDecreaseBeforeAdjustmentsAndTax

us-gaap:ForeignExchangeContract, us-gaap:Nondesignated, us-gaap:OtherOperatingIncomeExpense


Other
Period End2021-03-31
Value35
Percentage of OtherComprehensiveIncomeLossDerivativeExcludedComponentIncreaseDecreaseBeforeAdjustmentsAndTax100.0

us-gaap:OtherComprehensiveIncomeLossDerivativeExcludedComponentIncreaseDecreaseBeforeAdjustmentsAndTax us-gaap:HedgingDesignation

us-gaap:Nondesignated


Other
Period End2021-03-31
Value35
Percentage of OtherComprehensiveIncomeLossDerivativeExcludedComponentIncreaseDecreaseBeforeAdjustmentsAndTax100.0

us-gaap:OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent

us-gaap:OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value15-2.0-1.78-3.47214-7.931-1.0260.0892.151.911-0.3981.0871.141-1.993
Percentage of OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent us-gaap:StatementEquityComponents

us-gaap:AccumulatedNetGainLossFromDesignatedOrQualifyingCashFlowHedges


Other
Period End2021-06-30
Value21
Percentage of OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent140.0

us-gaap:AccumulatedNetUnrealizedInvestmentGainLoss


Other
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-31
Value-6.0-2.0-3.47214-7.9310.0892.151.911
Percentage of OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent-40.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AccumulatedOtherComprehensiveIncome


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value15-2.0-1.78-3.47214-7.931-1.0260.0892.151.911-0.3981.0871.141-1.993
Percentage of OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax


Other
Period End2021-06-302020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value1000000.02403000.0-211000.0-1212000.0321000.0230000.079000.017000.0-3000.069000.0-629000.0597000.0-6000.0
Percentage of OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax

us-gaap:OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value-5.0-2.00.623-3.68313-7.61-0.7960.1682.1671.908-0.3290.4581.738-1.999
Percentage of OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax

us-gaap:OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax


Other
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value00000-25000.025000.0608000.0540000.00000
Percentage of OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax0.00.00.00.00.0100.0100.0100.0100.00.00.00.00.0

us-gaap:PaymentsOfStockIssuanceCosts

us-gaap:PaymentsOfStockIssuanceCosts


Payments
Period End2020-12-312020-09-302020-06-302020-03-312018-09-302018-06-302018-03-31
Value0.0340.00.9781.1080.4740.47410
Percentage of PaymentsOfStockIssuanceCosts100.00.0100.0100.0100.0100.0100.0

us-gaap:PaymentsToAcquireAvailableForSaleSecuritiesDebt

us-gaap:PaymentsToAcquireAvailableForSaleSecuritiesDebt


Payments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value58337266301422282621195105413429276113177660
Percentage of PaymentsToAcquireAvailableForSaleSecuritiesDebt100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PaymentsToAcquireInProcessResearchAndDevelopment

us-gaap:PaymentsToAcquireInProcessResearchAndDevelopment


Payments
Period End2021-06-302021-03-31
Value14884
Percentage of PaymentsToAcquireInProcessResearchAndDevelopment100.0100.0

us-gaap:ProceedsFromCustomers us-gaap:SupplyCommitment

us-gaap:ProceedsFromCustomers

mrna:InternationalSupplyAgreements


Proceeds
Period End2020-09-30
Value569
Percentage of ProceedsFromCustomers100.0

us-gaap:ProceedsFromIssuanceOfCommonStock

us-gaap:ProceedsFromIssuanceOfCommonStock


Proceeds
Period End2020-12-312020-09-302020-06-302020-03-312019-06-302019-03-31
Value-0.0340.013035490.00.0
Percentage of ProceedsFromIssuanceOfCommonStock100.00.0100.0100.00.00.0

us-gaap:ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities

us-gaap:ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities


Proceeds
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value521339388231247269245184159403289195108189
Percentage of ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProceedsFromSaleOfAvailableForSaleSecuritiesDebt

us-gaap:ProceedsFromSaleOfAvailableForSaleSecuritiesDebt


Proceeds
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value146424274326641874117216.477609118
Percentage of ProceedsFromSaleOfAvailableForSaleSecuritiesDebt100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProceedsFromStockPlans

us-gaap:ProceedsFromStockPlans


Proceeds
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value36284626782827153.930.0571.0670.290.0480.022
Percentage of ProceedsFromStockPlans100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RestrictedStockExpense

us-gaap:RestrictedStockExpense


Restricted
Period End2021-06-302021-03-31
Value3000000.06000000.0
Percentage of RestrictedStockExpense100.0100.0

us-gaap:RightOfUseAssetObtainedInExchangeForFinanceLeaseLiability

us-gaap:RightOfUseAssetObtainedInExchangeForFinanceLeaseLiability


Right
Period End2021-06-302021-03-31
Value7551
Percentage of RightOfUseAssetObtainedInExchangeForFinanceLeaseLiability100.0100.0

us-gaap:RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability

us-gaap:RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability


Right
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value0.01.0920.0167.1759.4230.017
Percentage of RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability0.0100.00.0100.0100.0100.00.0100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod

us-gaap:RestrictedStockUnitsRSU


Share
Period End2021-06-302021-03-312019-12-312019-09-302018-03-31
Value50000.020000.059265.025519.05440.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod100.0100.0100.0100.0100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue

us-gaap:RestrictedStockUnitsRSU


Share
Period End2021-06-302021-03-312020-12-312019-12-312019-09-302018-03-31
Value5.632.390.95-0.760.0820.93
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue100.0100.0100.0100.0100.0100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue

us-gaap:RestrictedStockUnitsRSU


Share
Period End2021-06-302021-03-312020-12-312019-12-312019-09-302018-03-31
Value4.84165.193.08-0.07-1.7420.77
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue100.0100.0100.0100.0100.0100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod

us-gaap:RestrictedStockUnitsRSU


Share
Period End2021-06-302021-03-312019-12-312019-09-302018-03-31
Value110000.0240000.014342.014334.014334.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod100.0100.0100.0100.0100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue

us-gaap:RestrictedStockUnitsRSU


Share
Period End2021-06-302021-03-312020-12-312019-12-312019-09-302018-03-31
Value0.8624.77-0.180011.93
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue100.0100.0100.00.00.0100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate

us-gaap:EmployeeStock


Share
Period End2020-12-312020-09-302019-12-312019-09-30
Value-11.064.350.030
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate100.0100.0100.00.0

us-gaap:EmployeeStockOption


Share
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value0.1857.243-0.00260.58-0.01000.62-0.0100.010.63
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate-1.689.00.00.0-33.30.00.00.00.00.00.00.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate

us-gaap:EmployeeStock


Share
Period End2020-12-312020-09-302019-12-312019-09-30
Value-0.040.1782-0.00360
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate100.0100.0100.00.0

us-gaap:EmployeeStockOption


Share
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value-0.020.8407-0.00070.01-0.001-0.0003-0.00060.02480.0005000.0271
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate50.0471.80.00.027.80.00.00.00.00.00.00.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue


Share
Period End2021-06-302021-03-312020-12-31
Value325250350
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue100.0100.0100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod


Share
Period End2021-06-302021-03-31
Value360000.090000.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod100.0100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross


Share
Period End2021-06-302021-03-31
Value0.260.87
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross100.0100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue


Share
Period End2021-06-302021-03-312020-12-31
Value1.575.131.2
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue100.0100.0100.0

us-gaap:ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice

us-gaap:ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice


Share
Period End2021-06-302021-03-312020-12-31
Value0.5114.80.36
Percentage of ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice100.0100.0100.0

us-gaap:ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsForfeituresInPeriodWeightedAverageExercisePrice

us-gaap:ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsForfeituresInPeriodWeightedAverageExercisePrice


Share
Period End2021-06-302021-03-312020-12-31
Value3.5523.920.36
Percentage of ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsForfeituresInPeriodWeightedAverageExercisePrice100.0100.0100.0

us-gaap:ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice

us-gaap:ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice


Share
Period End2021-06-302021-03-312020-12-31
Value2.75171.072.25
Percentage of ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice100.0100.0100.0

us-gaap:SharebasedCompensationArrangementBySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsAggregateIntrinsicValueVested us-gaap:AwardType

us-gaap:SharebasedCompensationArrangementBySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsAggregateIntrinsicValueVested

us-gaap:RestrictedStockUnitsRSU


Sharebased
Period End2021-06-302021-03-31
Value1935
Percentage of SharebasedCompensationArrangementBySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsAggregateIntrinsicValueVested100.0100.0

us-gaap:StockIssuedDuringPeriodSharesStockOptionsExercised

us-gaap:StockIssuedDuringPeriodSharesStockOptionsExercised


Stock
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value1.971.892.0567285.3546013.1886713.3905862.5029271.0462680.005525
Percentage of StockIssuedDuringPeriodSharesStockOptionsExercised100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StockIssuedDuringPeriodSharesStockOptionsExercised us-gaap:StatementEquityComponents

us-gaap:CommonStock


Stock
Period End2021-06-302021-03-312020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value2.02.05.3546013.1886713.3905862.5029271.0462680.0055250.0550890.0443070.3456790.001789
Percentage of StockIssuedDuringPeriodSharesStockOptionsExercised101.5105.8100.0100.0100.0100.0100.0100.00.00.00.00.0

us-gaap:StockIssuedDuringPeriodValueEmployeeStockPurchasePlan

us-gaap:StockIssuedDuringPeriodValueEmployeeStockPurchasePlan


Stock
Period End2021-06-302020-12-312020-09-302020-06-30
Value5000000.04123000.002917000.0
Percentage of StockIssuedDuringPeriodValueEmployeeStockPurchasePlan100.0100.00.0100.0

us-gaap:StockIssuedDuringPeriodValueEmployeeStockPurchasePlan us-gaap:StatementEquityComponents

us-gaap:AdditionalPaidInCapital


Stock
Period End2021-06-302020-12-312020-09-302020-06-30
Value5000000.04123000.002917000.0
Percentage of StockIssuedDuringPeriodValueEmployeeStockPurchasePlan100.0100.00.0100.0

us-gaap:StockIssuedDuringPeriodValueStockOptionsExercised

us-gaap:StockIssuedDuringPeriodValueStockOptionsExercised


Stock
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value31284626782827153.930.11.0670.290.0480.022
Percentage of StockIssuedDuringPeriodValueStockOptionsExercised100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StockIssuedDuringPeriodValueStockOptionsExercised us-gaap:StatementEquityComponents

us-gaap:AdditionalPaidInCapital


Stock
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value31284626782827153.930.0571.0670.290.0480.022
Percentage of StockIssuedDuringPeriodValueStockOptionsExercised100.0100.0100.0100.0100.0100.0100.0100.0100.057.0100.0100.0100.0100.0

us-gaap:CommonStock


Stock
Period End2020-12-312020-09-302020-06-30
Value-0.0010.0010.001
Percentage of StockIssuedDuringPeriodValueStockOptionsExercised-0.00.00.0

us-gaap:VariableLeaseCost

us-gaap:VariableLeaseCost


Variable
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value1611000.01120000.01091000.01407000.0904000.01430000.01171000.0894000.0
Percentage of VariableLeaseCost100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:WeightedAverageNumberDilutedSharesOutstandingAdjustment

us-gaap:WeightedAverageNumberDilutedSharesOutstandingAdjustment


Weighted
Period End2021-06-302021-03-31
Value2930
Percentage of WeightedAverageNumberDilutedSharesOutstandingAdjustment100.0100.0

mrna:AccruedClinicalTrials

mrna:AccruedClinicalTrials


Accrued
Period End2021-06-302021-03-312020-12-312020-09-302019-12-31
Value10818197446.291
Percentage of AccruedClinicalTrials100.0100.0100.0100.0100.0

mrna:AccruedDevelopmentOperation

mrna:AccruedDevelopmentOperation


Accrued
Period End2021-06-302021-03-312020-12-312020-09-302019-12-31
Value1027129242.567
Percentage of AccruedDevelopmentOperation100.0100.0100.0100.0100.0

mrna:AccruedExternalGoodsAndServicesCurrent

mrna:AccruedExternalGoodsAndServicesCurrent


Accrued
Period End2020-12-312020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value915538363323222114
Percentage of AccruedExternalGoodsAndServicesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0

mrna:AccruedManufacturing

mrna:AccruedManufacturing


Accrued
Period End2021-06-302021-03-312020-12-312020-09-302019-12-31
Value15811953145.872
Percentage of AccruedManufacturing100.0100.0100.0100.0100.0

mrna:AccruedOtherExternalGoodsAndServicesCurrent

mrna:AccruedOtherExternalGoodsAndServicesCurrent


Accrued
Period End2021-06-302021-03-312020-12-312020-09-302019-12-31
Value4958926421
Percentage of AccruedOtherExternalGoodsAndServicesCurrent100.0100.0100.0100.0100.0

mrna:AccruedPropertyAndEquipmentCurrent

mrna:AccruedPropertyAndEquipmentCurrent


Accrued
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value1717128.3094.354.0292.2755.4027.7561214
Percentage of AccruedPropertyAndEquipmentCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

mrna:Commercial

mrna:Commercial


Commercial
Period End2021-03-312020-12-31
Value5000000.06922000.0
Percentage of Commercial100.0100.0

mrna:DeferredTaxAssetsCapitalizedLicensesResearchAndDevelopmentAndStartUpCosts

mrna:DeferredTaxAssetsCapitalizedLicensesResearchAndDevelopmentAndStartUpCosts


Deferred
Period End2020-12-312019-12-312018-12-312017-12-31
Value13192218
Percentage of DeferredTaxAssetsCapitalizedLicensesResearchAndDevelopmentAndStartUpCosts100.0100.0100.0100.0

mrna:DeferredTaxAssetsDeferredExpenseCapitalizedInventoryCosts

mrna:DeferredTaxAssetsDeferredExpenseCapitalizedInventoryCosts


Deferred
Period End2020-12-31
Value38
Percentage of DeferredTaxAssetsDeferredExpenseCapitalizedInventoryCosts100.0

mrna:DeferredTaxAssetsFinancingLeaseLiability

mrna:DeferredTaxAssetsFinancingLeaseLiability


Deferred
Period End2020-12-312019-12-31
Value2310
Percentage of DeferredTaxAssetsFinancingLeaseLiability100.0100.0

mrna:DeferredTaxAssetsOperatingLeaseLiability

mrna:DeferredTaxAssetsOperatingLeaseLiability


Deferred
Period End2020-12-312019-12-31
Value2226
Percentage of DeferredTaxAssetsOperatingLeaseLiability100.0100.0

mrna:DeferredTaxLiabilitiesFinanceLeaseRightOfUseAsset

mrna:DeferredTaxLiabilitiesFinanceLeaseRightOfUseAsset


Deferred
Period End2020-12-312019-12-31
Value112.612
Percentage of DeferredTaxLiabilitiesFinanceLeaseRightOfUseAsset100.0100.0

mrna:DeferredTaxLiabilitiesOperatingLeaseRightOfUseAsset

mrna:DeferredTaxLiabilitiesOperatingLeaseRightOfUseAsset


Deferred
Period End2020-12-312019-12-31
Value2024
Percentage of DeferredTaxLiabilitiesOperatingLeaseRightOfUseAsset100.0100.0

mrna:FinanceLeaseLiabilityToBePaidAfterYearFour

mrna:FinanceLeaseLiabilityToBePaidAfterYearFour


Finance
Period End2021-06-302021-03-31
Value600428
Percentage of FinanceLeaseLiabilityToBePaidAfterYearFour100.0100.0

mrna:LesseeOperatingLeasePercentageSubleased us-gaap:RealEstateAndAccumulatedDepreciationDescriptionOfProperty, us-gaap:StatementGeographical

mrna:LesseeOperatingLeasePercentageSubleased

mrna:MTCNorth, mrna:NorwoodMassachusetts


Lessee
Period End2020-09-302020-06-012019-06-30
Value64.00.120.64
Percentage of LesseeOperatingLeasePercentageSubleased100.0100.0100.0

mrna:OperatingAndFinanceLeaseLiability

mrna:OperatingAndFinanceLeaseLiability


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-01-01
Value603286237212171151135108
Percentage of OperatingAndFinanceLeaseLiability100.0100.0100.0100.0100.0100.0100.0100.0

mrna:OperatingAndFinanceLeaseLiabilityCurrent

mrna:OperatingAndFinanceLeaseLiabilityCurrent


Operating
Period End2021-06-302021-03-312020-12-312019-12-31
Value17052303.583
Percentage of OperatingAndFinanceLeaseLiabilityCurrent100.0100.0100.0100.0

mrna:OperatingAndFinanceLeaseLiabilityNoncurrent

mrna:OperatingAndFinanceLeaseLiabilityNoncurrent


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-01-01
Value433234207207167147132101
Percentage of OperatingAndFinanceLeaseLiabilityNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0

mrna:OperatingAndFinanceLeaseRightOfUseAsset

mrna:OperatingAndFinanceLeaseRightOfUseAsset


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-01-01
Value5791881451471151109573
Percentage of OperatingAndFinanceLeaseRightOfUseAsset100.0100.0100.0100.0100.0100.0100.0100.0

mrna:OperatingLossCarryforwardsNotSubjectToExpiration us-gaap:IncomeTaxAuthority

mrna:OperatingLossCarryforwardsNotSubjectToExpiration

us-gaap:DomesticCountry


Operating
Period End2020-12-31
Value1880
Percentage of OperatingLossCarryforwardsNotSubjectToExpiration100.0

mrna:OperatingLossCarryforwardsSubjectToExpiration us-gaap:IncomeTaxAuthority

mrna:OperatingLossCarryforwardsSubjectToExpiration

us-gaap:DomesticCountry


Operating
Period End2020-12-312019-12-312018-12-31
Value380380380
Percentage of OperatingLossCarryforwardsSubjectToExpiration100.0100.0100.0

us-gaap:StateAndLocalJurisdiction


Operating
Period End2020-12-312019-12-312018-12-31
Value1700978402
Percentage of OperatingLossCarryforwardsSubjectToExpiration447.3257.5105.7

mrna:OtherPrepaidExpenseManufacturing

mrna:OtherPrepaidExpenseManufacturing


Other
Period End2021-06-302021-03-312020-12-312020-09-30
Value13822421623
Percentage of OtherPrepaidExpenseManufacturing100.0100.0100.0100.0

mrna:RawMaterialsAccountsPayable

mrna:RawMaterialsAccountsPayable


Raw
Period End2021-06-302021-03-312020-12-31
Value18418578
Percentage of RawMaterialsAccountsPayable100.0100.0100.0

mrna:ResearchAndDevelopmentArrangementContractToPerformForOthersMaximumAmount us-gaap:CapitalizedCostsOfUnprovedPropertiesExcludedFromAmortizationByPropertyOrProject, us-gaap:ResearchAndDevelopmentArrangementContractToPerformForOthersByType

mrna:ResearchAndDevelopmentArrangementContractToPerformForOthersMaximumAmount

mrna:PersonalizedMRNACancerVaccinesProducts, mrna:PersonalizedMRNACancerVaccinesPCVCollaborationAndLicenseAgreementWithMerckSharpAndDohmeCorp


Research
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-04-302017-12-31
Value243243243243243243243243243243243243200
Percentage of ResearchAndDevelopmentArrangementContractToPerformForOthersMaximumAmount100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

mrna:RevenueFromGrantsCurrentFundingCapacity us-gaap:MajorCustomers

mrna:RevenueFromGrantsCurrentFundingCapacity

mrna:BiomedicalAdvancedResearchAndDevelopmentAuthority


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value421317444781117117117117117117
Percentage of RevenueFromGrantsCurrentFundingCapacity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

mrna:RevenueFromGrantsCurrentFundingCapacity us-gaap:MajorCustomers, us-gaap:CapitalizedCostsOfUnprovedPropertiesExcludedFromAmortizationByPropertyOrProject

mrna:BiomedicalAdvancedResearchAndDevelopmentAuthority, mrna:ContractOptions


Revenue
Period End2021-06-302021-03-312020-12-312020-09-30
Value59697071
Percentage of RevenueFromGrantsCurrentFundingCapacity14.021.815.99.2

mrna:DefenseAdvancedResearchProjectsAgency, mrna:ContractOptions


Revenue
Period End2020-12-312020-09-302020-06-302020-03-31
Value4.65.05.03.0
Percentage of RevenueFromGrantsCurrentFundingCapacity1.00.60.02.6

mrna:RevenueFromGrantsRemainingFundingCapacity us-gaap:MajorCustomers, us-gaap:CapitalizedCostsOfUnprovedPropertiesExcludedFromAmortizationByPropertyOrProject

mrna:RevenueFromGrantsRemainingFundingCapacity

mrna:BiomedicalAdvancedResearchAndDevelopmentAuthority, mrna:ContractOptions


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-30
Value8.08.08.48.48.4
Percentage of RevenueFromGrantsRemainingFundingCapacity100.0100.0100.0100.0100.0

mrna:DefenseAdvancedResearchProjectsAgency, mrna:ContractOptions


Revenue
Period End2020-12-312020-09-302020-06-302020-03-31
Value51515151
Percentage of RevenueFromGrantsRemainingFundingCapacity611.9611.9607.10.0

mrna:TheBillAndMelindaGatesFoundation, mrna:InitialProject


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-30
Value10.011111212
Percentage of RevenueFromGrantsRemainingFundingCapacity125.0137.5135.7150.0151.2

mrna:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageGrantDateFairValue

mrna:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageGrantDateFairValue


Share
Period End2021-06-302021-03-312020-12-312020-09-30
Value6.36.045.675.61
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageGrantDateFairValue100.0100.0100.0100.0

mrna:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageGrantDateFairValue

mrna:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageGrantDateFairValue


Share
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value11.5910.919.128.828.327.987.357.187.056.996.594.91
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageGrantDateFairValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

mrna:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingWeightedAverageGrantDateFairValue

mrna:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingWeightedAverageGrantDateFairValue


Share
Period End2021-06-302021-03-312020-12-312020-09-30
Value18.2616.5212.7511.94
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingWeightedAverageGrantDateFairValue100.0100.0100.0100.0

mrna:TenantIncentivesReceivablesCurrent

mrna:TenantIncentivesReceivablesCurrent


Tenant
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value10.01012163.1984.0939.9046.3111101.748
Percentage of TenantIncentivesReceivablesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AccruedRoyaltiesCurrentAndNoncurrent

us-gaap:AccruedRoyaltiesCurrentAndNoncurrent


Accrued
Period End2021-06-302021-03-31
Value14684
Percentage of AccruedRoyaltiesCurrentAndNoncurrent100.0100.0

us-gaap:AreaOfRealEstateProperty us-gaap:RealEstateAndAccumulatedDepreciationDescriptionOfProperty

us-gaap:AreaOfRealEstateProperty

mrna:MTCEast


Area
Period End2021-04-30
Value240000.0
Percentage of AreaOfRealEstateProperty100.0

us-gaap:AreaOfRealEstateProperty us-gaap:StatementGeographical

mrna:CambridgeMassachusetts


Area
Period End2021-06-302021-03-312020-12-312020-09-302019-12-312019-09-302019-06-302019-03-312018-12-31
Value261000.0175000.0175000.0175000.0200000.0200000.0200000.0200000.0200000.0
Percentage of AreaOfRealEstateProperty0.00.00.00.00.00.00.00.00.0

us-gaap:AssetsFairValueDisclosure us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency

us-gaap:AssetsFairValueDisclosure

us-gaap:FairValueInputsLevel1, us-gaap:FairValueMeasurementsRecurring


Assets
Period End2021-06-302021-03-312020-12-31
Value3838537620
Percentage of AssetsFairValueDisclosure100.0100.0100.0

us-gaap:FairValueInputsLevel2, us-gaap:FairValueMeasurementsRecurring


Assets
Period End2021-06-302021-03-312020-12-312019-12-31
Value6624276226221037
Percentage of AssetsFairValueDisclosure172.6514.3422.40.0

us-gaap:AssetsFairValueDisclosure us-gaap:FairValueByMeasurementFrequency

us-gaap:FairValueMeasurementsRecurring


Assets
Period End2021-06-302021-03-312020-12-312019-12-31
Value10462329932431037
Percentage of AssetsFairValueDisclosure272.6614.3522.40.0

us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax us-gaap:FairValueByFairValueHierarchyLevel

us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax

us-gaap:FairValueInputsLevel2


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value1000000.03000000.04413000.06476000.09537000.02495000.03047000.04025000.03942000.01356000.0120000.096000.0
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FinancialInstrument

us-gaap:FairValueInputsLevel1, us-gaap:CashAndCashEquivalents


Available
Period End2020-12-31
Value1000.0
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax0.0

us-gaap:FairValueInputsLevel2, mrna:USGovernmentAgenciesAndCorporateDebtSecurities


Available
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value3000000.04294000.06043000.08669000.01099000.02708000.03457000.03275000.01129000.040000.061000.0
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax100.097.393.390.944.088.985.983.183.333.363.5

us-gaap:FairValueInputsLevel2, us-gaap:CertificatesOfDeposit


Available
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value49000.046000.091000.069000.079000.0147000.0160000.072000.042000.035000.0
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax1.10.71.02.82.63.74.15.335.036.5

us-gaap:FairValueInputsLevel2, us-gaap:CorporateDebtSecurities


Available
Period End2021-06-302020-12-31
Value1000000.04000000.0
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax100.090.6

us-gaap:FairValueInputsLevel2, us-gaap:USTreasurySecurities


Available
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value69000.0385000.0777000.01327000.0260000.0421000.0507000.0155000.018000.00
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax1.65.98.153.28.510.512.911.415.00.0

us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax us-gaap:FinancialInstrument

us-gaap:CashAndCashEquivalents


Available
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value2000.000000020000.00
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax0.00.00.00.00.00.00.016.70.0

us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax us-gaap:FairValueByFairValueHierarchyLevel

us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax

us-gaap:FairValueInputsLevel2


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value6000000.01000000.0151000.0509000.094000.07424000.040000.021000.053000.0224000.01440000.01253000.0
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FinancialInstrument

us-gaap:FairValueInputsLevel2, mrna:USGovernmentAgenciesAndCorporateDebtSecurities


Available
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value1000000.0147000.0507000.091000.07213000.032000.021000.052000.0218000.01335000.0681000.0
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax100.097.499.696.897.280.0100.098.197.392.754.3

us-gaap:FairValueInputsLevel2, us-gaap:CertificatesOfDeposit


Available
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value4000.01000.03000.0211000.06000.001000.01000.036000.0218000.0
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax2.60.23.22.815.00.01.90.42.517.4

us-gaap:FairValueInputsLevel2, us-gaap:CorporateDebtSecurities


Available
Period End2021-06-30
Value3000000.0
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax50.0

us-gaap:FairValueInputsLevel2, us-gaap:USGovernmentAgenciesDebtSecurities


Available
Period End2021-06-30
Value3000000.0
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax50.0

us-gaap:FairValueInputsLevel2, us-gaap:USTreasurySecurities


Available
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value1000.0002000.0004000.048000.0354000.0
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax0.20.00.05.00.00.01.83.328.3

us-gaap:AvailableForSaleDebtSecuritiesAmortizedCostBasis

us-gaap:AvailableForSaleDebtSecuritiesAmortizedCostBasis


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-03-312017-12-31
Value659927592618245613001333102411601279104210371037768
Percentage of AvailableForSaleDebtSecuritiesAmortizedCostBasis100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AvailableForSaleDebtSecuritiesAmortizedCostBasis us-gaap:FairValueByFairValueHierarchyLevel

us-gaap:FairValueInputsLevel2


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value122028201524239623062172512591334143115451695903
Percentage of AvailableForSaleDebtSecuritiesAmortizedCostBasis184.9297.2200.2161.3235.4129.4123.0115.0111.8148.2163.5117.6

us-gaap:AvailableForSaleDebtSecuritiesAmortizedCostBasis us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FinancialInstrument

us-gaap:FairValueInputsLevel1, us-gaap:CashAndCashEquivalents


Available
Period End2021-06-302021-03-312020-12-312019-12-31
Value560354422623225
Percentage of AvailableForSaleDebtSecuritiesAmortizedCostBasis84.9197.2100.222.1

us-gaap:FairValueInputsLevel2, mrna:USGovernmentAgenciesAndCorporateDebtSecurities


Available
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value19721888216510901162834932990839712404
Percentage of AvailableForSaleDebtSecuritiesAmortizedCostBasis71.572.188.183.887.281.580.377.480.568.652.6

us-gaap:FairValueInputsLevel2, us-gaap:CertificatesOfDeposit


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value504132381613568828113684173245
Percentage of AvailableForSaleDebtSecuritiesAmortizedCostBasis0.815.09.16.62.85.18.07.010.68.116.732.0

us-gaap:FairValueInputsLevel2, us-gaap:CorporateDebtSecurities


Available
Period End2021-06-302020-12-31
Value21131801
Percentage of AvailableForSaleDebtSecuritiesAmortizedCostBasis32.068.8

us-gaap:FairValueInputsLevel2, us-gaap:USGovernmentAgenciesDebtSecurities


Available
Period End2021-06-302020-12-31
Value434987
Percentage of AvailableForSaleDebtSecuritiesAmortizedCostBasis65.93.3

us-gaap:FairValueInputsLevel2, us-gaap:USTreasurySecurities


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value87374491130174212117146153119152118
Percentage of AvailableForSaleDebtSecuritiesAmortizedCostBasis1.313.618.85.313.416.011.512.612.011.414.715.4

us-gaap:AvailableForSaleDebtSecuritiesAmortizedCostBasis us-gaap:FinancialInstrument

us-gaap:CashAndCashEquivalents


Available
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value15051761281225173151502658134
Percentage of AvailableForSaleDebtSecuritiesAmortizedCostBasis61.3135.421.122.115.011.848.263.517.6

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsAmortizedCost

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsAmortizedCost


Available
Period End2021-06-302021-03-312020-12-312020-09-302019-12-312019-03-312018-12-312018-03-312017-12-31
Value4213468637689159436173173146
Percentage of AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsAmortizedCost100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue


Available
Period End2021-06-302021-03-312020-12-312020-09-302019-12-312019-03-312018-12-312018-03-312017-12-31
Value4207468638691159437172172145
Percentage of AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesSingleMaturityDate

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesSingleMaturityDate


Available
Period End2021-06-302021-03-312020-12-312020-09-302019-12-312019-03-312018-12-312018-03-312017-12-31
Value65942761262224621027104310361036767
Percentage of AvailableForSaleSecuritiesDebtMaturitiesSingleMaturityDate100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost


Available
Period End2021-06-302021-03-312020-12-312020-09-302019-12-312019-03-312018-12-312018-03-312017-12-31
Value2386229119801766864605864864622
Percentage of AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue


Available
Period End2021-06-302021-03-312020-12-312020-09-302019-12-312019-03-312018-12-312018-03-312017-12-31
Value2387229319831770867605863863621
Percentage of AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AvailableForSaleSecuritiesDebtSecurities us-gaap:BalanceSheetLocation, us-gaap:FairValueByFairValueHierarchyLevel

us-gaap:AvailableForSaleSecuritiesDebtSecurities

mrna:CurrentMarketableSecurities, us-gaap:FairValueInputsLevel2


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value2387229319831770955825867884918605863621
Percentage of AvailableForSaleSecuritiesDebtSecurities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

mrna:NoncurrentMarketableSecurities, us-gaap:FairValueInputsLevel2


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value4207468638691354502159279365437172145
Percentage of AvailableForSaleSecuritiesDebtSecurities176.220.432.239.137.160.818.531.639.772.220.023.5

us-gaap:CashAndCashEquivalents, us-gaap:FairValueInputsLevel2


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value56035442262315051761391235173151502658134
Percentage of AvailableForSaleSecuritiesDebtSecurities234.7237.3132.385.0184.447.427.219.616.583.076.321.7

us-gaap:AvailableForSaleSecuritiesDebtSecurities us-gaap:BalanceSheetLocation, us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FinancialInstrument

mrna:CurrentMarketableSecurities, us-gaap:FairValueInputsLevel2, mrna:USGovernmentAgenciesAndCorporateDebtSecurities


Available
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value150612761536822637687678656446552304
Percentage of AvailableForSaleSecuritiesDebtSecurities65.764.486.886.177.279.376.771.473.664.149.1

mrna:CurrentMarketableSecurities, us-gaap:FairValueInputsLevel2, us-gaap:CertificatesOfDeposit


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value504132151522747698113280157198
Percentage of AvailableForSaleSecuritiesDebtSecurities2.118.010.98.62.95.78.09.214.413.318.331.9

mrna:CurrentMarketableSecurities, us-gaap:FairValueInputsLevel2, us-gaap:CorporateDebtSecurities


Available
Period End2021-06-302020-12-31
Value8391239
Percentage of AvailableForSaleSecuritiesDebtSecurities35.162.5

mrna:CurrentMarketableSecurities, us-gaap:FairValueInputsLevel2, us-gaap:USGovernmentAgenciesDebtSecurities


Available
Period End2021-06-302020-12-31
Value141138
Percentage of AvailableForSaleSecuritiesDebtSecurities59.11.9

mrna:CurrentMarketableSecurities, us-gaap:FairValueInputsLevel2, us-gaap:USTreasurySecurities


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value873744918110514111012412979152117
Percentage of AvailableForSaleSecuritiesDebtSecurities3.616.324.84.611.117.112.714.114.113.117.619.0

mrna:NoncurrentMarketableSecurities, us-gaap:FairValueInputsLevel2, mrna:USGovernmentAgenciesAndCorporateDebtSecurities


Available
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value46861563427641814925633739315798
Percentage of AvailableForSaleSecuritiesDebtSecurities20.431.035.829.050.617.229.036.765.018.315.9

mrna:NoncurrentMarketableSecurities, us-gaap:FairValueInputsLevel2, us-gaap:CertificatesOfDeposit


Available
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value238.4938.491112.9020.03.7013.7021547
Percentage of AvailableForSaleSecuritiesDebtSecurities1.20.50.91.40.30.00.40.61.87.6

mrna:NoncurrentMarketableSecurities, us-gaap:FairValueInputsLevel2, us-gaap:CorporateDebtSecurities


Available
Period End2021-06-302020-12-31
Value1272566
Percentage of AvailableForSaleSecuritiesDebtSecurities53.328.5

mrna:NoncurrentMarketableSecurities, us-gaap:FairValueInputsLevel2, us-gaap:USGovernmentAgenciesDebtSecurities


Available
Period End2021-06-302020-12-31
Value293549
Percentage of AvailableForSaleSecuritiesDebtSecurities123.02.5

mrna:NoncurrentMarketableSecurities, us-gaap:FairValueInputsLevel2, us-gaap:USTreasurySecurities


Available
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value4969737.9632224400.00.0
Percentage of AvailableForSaleSecuritiesDebtSecurities2.87.38.80.92.62.66.60.00.0

us-gaap:CashAndCashEquivalents, us-gaap:FairValueInputsLevel1, us-gaap:CashAndCashEquivalents


Available
Period End2021-06-302021-03-312020-12-312019-12-31
Value560354422623225
Percentage of AvailableForSaleSecuritiesDebtSecurities234.7237.3132.326.0

us-gaap:AvailableForSaleSecuritiesDebtSecurities us-gaap:BalanceSheetLocation, us-gaap:FinancialInstrument

us-gaap:CashAndCashEquivalents, us-gaap:CashAndCashEquivalents


Available
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value15051761281225173151502658134
Percentage of AvailableForSaleSecuritiesDebtSecurities85.0184.434.126.019.616.583.076.321.7

us-gaap:AvailableForSaleSecuritiesDebtSecurities us-gaap:FairValueByFairValueHierarchyLevel

us-gaap:FairValueInputsLevel2


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value121978203524639683071172012621338143515461694901
Percentage of AvailableForSaleSecuritiesDebtSecurities511.0357.7264.5224.1321.5208.3145.7151.3156.2255.2196.3145.2

us-gaap:AvailableForSaleSecuritiesDebtSecurities us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency, us-gaap:FinancialInstrument

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


Available
Period End2021-06-302021-03-312020-12-31
Value3838537620
Percentage of AvailableForSaleSecuritiesDebtSecurities160.823.431.3

us-gaap:FairValueInputsLevel2, us-gaap:FairValueMeasurementsRecurring, mrna:USGovernmentAgenciesAndCorporateDebtSecurities


Available
Period End2021-03-312020-12-312019-12-31
Value19741892836
Percentage of AvailableForSaleSecuritiesDebtSecurities86.195.496.5

us-gaap:FairValueInputsLevel2, us-gaap:FairValueMeasurementsRecurring, us-gaap:CertificatesOfDeposit


Available
Period End2021-06-302021-03-312020-12-312019-12-31
Value5041323882
Percentage of AvailableForSaleSecuritiesDebtSecurities2.118.012.09.5

us-gaap:FairValueInputsLevel2, us-gaap:FairValueMeasurementsRecurring, us-gaap:CorporateDebtSecurities


Available
Period End2021-06-302020-12-31
Value21111805
Percentage of AvailableForSaleSecuritiesDebtSecurities88.491.0

us-gaap:FairValueInputsLevel2, us-gaap:FairValueMeasurementsRecurring, us-gaap:USGovernmentAgenciesDebtSecurities


Available
Period End2021-06-302020-12-31
Value434687
Percentage of AvailableForSaleSecuritiesDebtSecurities182.14.4

us-gaap:FairValueInputsLevel2, us-gaap:FairValueMeasurementsRecurring, us-gaap:USTreasurySecurities


Available
Period End2021-06-302021-03-312020-12-312019-12-31
Value87374491118
Percentage of AvailableForSaleSecuritiesDebtSecurities3.616.324.813.6

us-gaap:AvailableForSaleSecuritiesDebtSecurities us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FinancialInstrument

us-gaap:FairValueInputsLevel1, us-gaap:CashAndCashEquivalents


Available
Period End2021-06-302021-03-312020-12-312019-12-31
Value560354422623225
Percentage of AvailableForSaleSecuritiesDebtSecurities234.7237.3132.326.0

us-gaap:FairValueInputsLevel2, mrna:USGovernmentAgenciesAndCorporateDebtSecurities


Available
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value19741892217010981156836935993839710403
Percentage of AvailableForSaleSecuritiesDebtSecurities86.195.4122.6115.0140.096.5105.8108.1138.682.464.9

us-gaap:FairValueInputsLevel2, us-gaap:CertificatesOfDeposit


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value504132381613568828113684173245
Percentage of AvailableForSaleSecuritiesDebtSecurities2.118.012.09.13.88.39.59.214.813.920.139.6

us-gaap:FairValueInputsLevel2, us-gaap:CorporateDebtSecurities


Available
Period End2021-06-302020-12-31
Value21111805
Percentage of AvailableForSaleSecuritiesDebtSecurities88.491.0

us-gaap:FairValueInputsLevel2, us-gaap:USGovernmentAgenciesDebtSecurities


Available
Period End2021-06-302020-12-31
Value434687
Percentage of AvailableForSaleSecuritiesDebtSecurities182.14.4

us-gaap:FairValueInputsLevel2, us-gaap:USTreasurySecurities


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value87374491130175214118147154119152117
Percentage of AvailableForSaleSecuritiesDebtSecurities3.616.324.87.418.425.913.616.616.819.717.619.0

us-gaap:AvailableForSaleSecuritiesDebtSecurities us-gaap:FairValueByMeasurementFrequency, us-gaap:FinancialInstrument

us-gaap:FairValueMeasurementsRecurring, mrna:USGovernmentAgenciesAndCorporateDebtSecurities


Available
Period End2021-03-312020-12-312019-12-31
Value19741892836
Percentage of AvailableForSaleSecuritiesDebtSecurities86.195.496.5

us-gaap:FairValueMeasurementsRecurring, us-gaap:CertificatesOfDeposit


Available
Period End2021-06-302021-03-312020-12-312019-12-31
Value5041323882
Percentage of AvailableForSaleSecuritiesDebtSecurities2.118.012.09.5

us-gaap:FairValueMeasurementsRecurring, us-gaap:CorporateDebtSecurities


Available
Period End2021-06-302020-12-31
Value21111805
Percentage of AvailableForSaleSecuritiesDebtSecurities88.491.0

us-gaap:FairValueMeasurementsRecurring, us-gaap:MoneyMarketFunds


Available
Period End2021-06-302021-03-312020-12-31
Value3838537620
Percentage of AvailableForSaleSecuritiesDebtSecurities160.823.431.3

us-gaap:FairValueMeasurementsRecurring, us-gaap:USGovernmentAgenciesDebtSecurities


Available
Period End2021-06-302020-12-31
Value434687
Percentage of AvailableForSaleSecuritiesDebtSecurities182.14.4

us-gaap:FairValueMeasurementsRecurring, us-gaap:USTreasurySecurities


Available
Period End2021-06-302021-03-312020-12-312019-12-31
Value87374491118
Percentage of AvailableForSaleSecuritiesDebtSecurities3.616.324.813.6

us-gaap:AvailableForSaleSecuritiesDebtSecurities us-gaap:FinancialInstrument

us-gaap:CashAndCashEquivalents


Available
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value15051761281225173151502658134
Percentage of AvailableForSaleSecuritiesDebtSecurities85.0184.434.126.019.616.583.076.321.7

us-gaap:AvailableForSaleSecuritiesDebtSecuritiesCurrent

us-gaap:AvailableForSaleSecuritiesDebtSecuritiesCurrent


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value2387229319831770955825867884918605863621
Percentage of AvailableForSaleSecuritiesDebtSecuritiesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AvailableForSaleSecuritiesDebtSecuritiesNoncurrent

us-gaap:AvailableForSaleSecuritiesDebtSecuritiesNoncurrent


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value4207468638691354502159279365437172145
Percentage of AvailableForSaleSecuritiesDebtSecuritiesNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:CommonStockCapitalSharesReservedForFutureIssuance us-gaap:AwardType

us-gaap:CommonStockCapitalSharesReservedForFutureIssuance

us-gaap:EmployeeStock


Common
Period End2021-06-302021-03-312020-09-30
Value4000000.04000000.03700000.0
Percentage of CommonStockCapitalSharesReservedForFutureIssuance100.0100.0100.0

us-gaap:ContractWithCustomerAssetNet us-gaap:ProductOrService

us-gaap:ContractWithCustomerAssetNet

mrna:CollaborationArrangementIncludingArrangementsWithAffiliate


Contract
Period End2021-06-302021-03-312020-12-312020-09-302019-12-31
Value7.09.05.544311.972
Percentage of ContractWithCustomerAssetNet100.0100.0100.0100.0100.0

us-gaap:ContractWithCustomerLiability

us-gaap:ContractWithCustomerLiability


Contract
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value7477771040441442253200199210218228240
Percentage of ContractWithCustomerLiability100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ContractWithCustomerLiability us-gaap:MajorCustomers, us-gaap:ProductOrService, us-gaap:SupplyCommitment

mrna:UnitedStatesGovernment, us-gaap:GovernmentContract, mrna:SupplyAgreementWithUnitedStatesGovernment


Contract
Period End2020-09-302020-08-31
Value12251525
Percentage of ContractWithCustomerLiability84.90.0

us-gaap:ContractWithCustomerLiability us-gaap:ProductOrService

mrna:CollaborationArrangement


Contract
Period End2021-06-302021-03-312020-12-312019-12-31
Value230235240199
Percentage of ContractWithCustomerLiability3.13.05.9100.0

mrna:CollaborationArrangementIncludingArrangementsWithAffiliate


Contract
Period End2021-06-302021-03-312020-12-312020-09-302019-12-31
Value230235240266199
Percentage of ContractWithCustomerLiability3.13.05.918.5100.0

mrna:ProductSales


Contract
Period End2021-06-302021-03-312020-12-31
Value720074703799
Percentage of ContractWithCustomerLiability96.396.993.9

mrna:VaccineSupply


Contract
Period End2020-09-302020-06-30
Value117075
Percentage of ContractWithCustomerLiability81.129.6

us-gaap:Grant


Contract
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302019-12-31
Value8.05.05.2615.675.7581.496
Percentage of ContractWithCustomerLiability0.10.10.10.42.30.7

us-gaap:ContractWithCustomerLiability us-gaap:ResearchAndDevelopmentArrangementContractToPerformForOthersByType

mrna:Combined2018AZAgreements


Contract
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value5772717273737575115
Percentage of ContractWithCustomerLiability1.45.028.136.236.935.034.833.048.0

mrna:PCVSAVAgreement


Contract
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value516068818393104115111
Percentage of ContractWithCustomerLiability1.34.226.940.442.044.547.950.346.2

mrna:VEGFExercise2016


Contract
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value292929434141373741
Percentage of ContractWithCustomerLiability0.72.011.621.420.619.617.216.217.1

mrna:VertexAgreements1


Contract
Period End2020-12-312020-09-302020-06-302019-12-31
Value2.6484.0613.8880.793
Percentage of ContractWithCustomerLiability0.10.31.50.4

us-gaap:ContractWithCustomerLiability us-gaap:SupplyCommitment

mrna:SupplyAgreementWithUnitedStatesGovernment


Contract
Period End2020-08-31
Value1650
Percentage of ContractWithCustomerLiability0.0

us-gaap:ContractWithCustomerLiabilityNoncurrent

us-gaap:ContractWithCustomerLiabilityNoncurrent


Contract
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value175179177207208142138143139156165
Percentage of ContractWithCustomerLiabilityNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months

us-gaap:DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months


Debt
Period End2020-12-312020-09-302020-06-302020-03-312019-12-31
Value152000.0509000.094000.07424000.040000.0
Percentage of DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months100.0100.0100.0100.0100.0

us-gaap:DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months us-gaap:FinancialInstrument

mrna:USGovernmentAgenciesAndCorporateDebtSecurities


Debt
Period End2020-12-312020-09-302020-06-302020-03-312019-12-31
Value148000.0507000.088000.07213000.032000.0
Percentage of DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months97.499.693.697.280.0

us-gaap:CertificatesOfDeposit


Debt
Period End2020-12-312020-09-302020-06-302020-03-312019-12-31
Value4000.01000.03000.0211000.06000.0
Percentage of DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months2.60.23.22.815.0

us-gaap:USTreasurySecurities


Debt
Period End2020-09-302020-06-302019-12-31
Value1000.03000.02000.0
Percentage of DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months0.23.25.0

us-gaap:DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss

us-gaap:DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss


Debt
Period End2020-12-312020-09-302020-06-302020-03-312019-12-31
Value5887596172485
Percentage of DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss100.0100.0100.0100.0100.0

us-gaap:DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss us-gaap:FinancialInstrument

mrna:USGovernmentAgenciesAndCorporateDebtSecurities


Debt
Period End2020-12-312020-09-302020-06-302020-03-312019-12-31
Value5077292870962
Percentage of DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss86.196.045.997.973.2

us-gaap:CertificatesOfDeposit


Debt
Period End2020-12-312020-09-302020-06-302020-03-312019-12-31
Value81148.491412
Percentage of DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss13.92.013.72.115.1

us-gaap:USTreasurySecurities


Debt
Period End2020-09-302020-06-302019-12-31
Value15249.979
Percentage of DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss2.040.311.7

us-gaap:DebtSecuritiesAvailableForSaleUnrealizedLossPosition

us-gaap:DebtSecuritiesAvailableForSaleUnrealizedLossPosition


Debt
Period End2020-12-312020-09-302020-06-302020-03-312019-12-31
Value152000.0509000.094000.07424000.040000.0
Percentage of DebtSecuritiesAvailableForSaleUnrealizedLossPosition100.0100.0100.0100.0100.0

us-gaap:DebtSecuritiesAvailableForSaleUnrealizedLossPosition us-gaap:FinancialInstrument

mrna:USGovernmentAgenciesAndCorporateDebtSecurities


Debt
Period End2020-12-312020-09-302020-06-302020-03-312019-12-31
Value148000.0507000.088000.07213000.032000.0
Percentage of DebtSecuritiesAvailableForSaleUnrealizedLossPosition97.499.693.697.280.0

us-gaap:CertificatesOfDeposit


Debt
Period End2020-12-312020-09-302020-06-302020-03-312019-12-31
Value4000.01000.03000.0211000.06000.0
Percentage of DebtSecuritiesAvailableForSaleUnrealizedLossPosition2.60.23.22.815.0

us-gaap:USTreasurySecurities


Debt
Period End2020-09-302020-06-302019-12-31
Value1000.03000.02000.0
Percentage of DebtSecuritiesAvailableForSaleUnrealizedLossPosition0.23.25.0

us-gaap:DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss

us-gaap:DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss


Debt
Period End2020-12-312020-09-302020-06-302020-03-312019-12-31
Value5887596172485
Percentage of DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss100.0100.0100.0100.0100.0

us-gaap:DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss us-gaap:FinancialInstrument

mrna:USGovernmentAgenciesAndCorporateDebtSecurities


Debt
Period End2020-12-312020-09-302020-06-302020-03-312019-12-31
Value5077292870962
Percentage of DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss86.196.045.997.973.2

us-gaap:CertificatesOfDeposit


Debt
Period End2020-12-312020-09-302020-06-302020-03-312019-12-31
Value81148.491412
Percentage of DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss13.92.013.72.115.1

us-gaap:USTreasurySecurities


Debt
Period End2020-09-302020-06-302019-12-31
Value15249.979
Percentage of DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss2.040.311.7

us-gaap:DeferredIncomeTaxAssetsNet

us-gaap:DeferredIncomeTaxAssetsNet


Deferred
Period End2021-06-302021-03-31
Value6650
Percentage of DeferredIncomeTaxAssetsNet100.0100.0

us-gaap:DeferredIncomeTaxLiabilities

us-gaap:DeferredIncomeTaxLiabilities


Deferred
Period End2020-12-312019-12-312018-12-312017-12-31
Value5036159.485
Percentage of DeferredIncomeTaxLiabilities100.0100.0100.0100.0

us-gaap:DeferredTaxAssetsDeferredIncome

us-gaap:DeferredTaxAssetsDeferredIncome


Deferred
Period End2020-12-312019-12-312018-12-312017-12-31
Value2953717.103
Percentage of DeferredTaxAssetsDeferredIncome100.0100.0100.0100.0

us-gaap:DeferredTaxAssetsGross

us-gaap:DeferredTaxAssetsGross


Deferred
Period End2020-12-312019-12-312018-12-312017-12-31
Value874507323208
Percentage of DeferredTaxAssetsGross100.0100.0100.0100.0

us-gaap:DeferredTaxAssetsOperatingLossCarryforwards

us-gaap:DeferredTaxAssetsOperatingLossCarryforwards


Deferred
Period End2020-12-312019-12-312018-12-312017-12-31
Value587268114100
Percentage of DeferredTaxAssetsOperatingLossCarryforwards100.0100.0100.0100.0

us-gaap:DeferredTaxAssetsTaxCreditCarryforwards

us-gaap:DeferredTaxAssetsTaxCreditCarryforwards


Deferred
Period End2020-12-312019-12-312018-12-312017-12-31
Value99775347
Percentage of DeferredTaxAssetsTaxCreditCarryforwards100.0100.0100.0100.0

us-gaap:DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost

us-gaap:DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost


Deferred
Period End2020-12-312019-12-312018-12-312017-12-31
Value33433315
Percentage of DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost100.0100.0100.0100.0

us-gaap:DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAccruedLiabilities

us-gaap:DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAccruedLiabilities


Deferred
Period End2020-12-312019-12-312018-12-312017-12-31
Value267.3771616
Percentage of DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAccruedLiabilities100.0100.0100.0100.0

us-gaap:DeferredTaxLiabilitiesOther

us-gaap:DeferredTaxLiabilitiesOther


Deferred
Period End2020-12-31
Value513000.0
Percentage of DeferredTaxLiabilitiesOther100.0

us-gaap:DeferredTaxLiabilitiesPropertyPlantAndEquipment

us-gaap:DeferredTaxLiabilitiesPropertyPlantAndEquipment


Deferred
Period End2020-12-312019-12-312018-12-312017-12-31
Value188.959159.485
Percentage of DeferredTaxLiabilitiesPropertyPlantAndEquipment100.0100.0100.0100.0

us-gaap:DerivativeAssets

us-gaap:DerivativeAssets


Derivative
Period End2021-06-30
Value30
Percentage of DerivativeAssets100.0

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

us-gaap:ForeignExchangeContract, us-gaap:CashFlowHedging, us-gaap:DesignatedAsHedgingInstrument


Derivative
Period End2021-06-30
Value27
Percentage of DerivativeAssets90.0

us-gaap:DerivativeAssets us-gaap:DerivativeInstrumentRisk, us-gaap:HedgingDesignation

us-gaap:ForeignExchangeContract, us-gaap:Nondesignated


Derivative
Period End2021-06-30
Value3.0
Percentage of DerivativeAssets10.0

us-gaap:DerivativeAssets us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency

us-gaap:FairValueInputsLevel2, us-gaap:FairValueMeasurementsRecurring


Derivative
Period End2021-06-302021-03-312020-12-31
Value301.00.293
Percentage of DerivativeAssets100.00.00.0

us-gaap:DerivativeAssets us-gaap:FairValueByMeasurementFrequency

us-gaap:FairValueMeasurementsRecurring


Derivative
Period End2021-06-302021-03-312020-12-31
Value301.00.293
Percentage of DerivativeAssets100.00.00.0

us-gaap:DerivativeAssets us-gaap:HedgingDesignation

us-gaap:Nondesignated


Derivative
Period End2021-06-30
Value30
Percentage of DerivativeAssets100.0

us-gaap:DerivativeAssetsCurrent

us-gaap:DerivativeAssetsCurrent


Derivative
Period End2021-06-30
Value30
Percentage of DerivativeAssetsCurrent100.0

us-gaap:DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsAssetAtFairValue us-gaap:DerivativeInstrumentRisk, us-gaap:HedgingDesignation

us-gaap:DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsAssetAtFairValue

us-gaap:ForeignExchangeContract, us-gaap:Nondesignated


Derivative
Period End2021-03-312020-12-31
Value1000000.0293000.0
Percentage of DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsAssetAtFairValue100.0100.0

us-gaap:DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsAssetAtFairValue us-gaap:HedgingDesignation

us-gaap:Nondesignated


Derivative
Period End2021-03-312020-12-31
Value1000000.0293000.0
Percentage of DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsAssetAtFairValue100.0100.0

us-gaap:DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsLiabilityAtFairValue us-gaap:DerivativeInstrumentRisk, us-gaap:HedgingDesignation

us-gaap:DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsLiabilityAtFairValue

us-gaap:ForeignExchangeContract, us-gaap:Nondesignated


Derivative
Period End2021-03-31
Value1000000.0
Percentage of DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsLiabilityAtFairValue100.0

us-gaap:DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsLiabilityAtFairValue us-gaap:HedgingDesignation

us-gaap:Nondesignated


Derivative
Period End2021-03-31
Value1000000.0
Percentage of DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsLiabilityAtFairValue100.0

us-gaap:DerivativeLiabilities

us-gaap:DerivativeLiabilities


Derivative
Period End2021-06-30
Value2000000.0
Percentage of DerivativeLiabilities100.0

us-gaap:DerivativeLiabilities us-gaap:DerivativeInstrumentRisk, us-gaap:HedgingDesignation

us-gaap:ForeignExchangeContract, us-gaap:Nondesignated


Derivative
Period End2021-06-30
Value2000000.0
Percentage of DerivativeLiabilities100.0

us-gaap:DerivativeLiabilities us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency

us-gaap:FairValueInputsLevel2, us-gaap:FairValueMeasurementsRecurring


Derivative
Period End2021-06-302021-03-31
Value2000000.01000000.0
Percentage of DerivativeLiabilities100.00.0

us-gaap:DerivativeLiabilities us-gaap:FairValueByMeasurementFrequency

us-gaap:FairValueMeasurementsRecurring


Derivative
Period End2021-06-302021-03-31
Value2000000.01000000.0
Percentage of DerivativeLiabilities100.00.0

us-gaap:DerivativeLiabilities us-gaap:HedgingDesignation

us-gaap:Nondesignated


Derivative
Period End2021-06-30
Value2000000.0
Percentage of DerivativeLiabilities100.0

us-gaap:DerivativeNotionalAmount

us-gaap:DerivativeNotionalAmount


Derivative
Period End2021-06-30
Value1289
Percentage of DerivativeNotionalAmount100.0

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

us-gaap:ForeignExchangeContract, us-gaap:CashFlowHedging, us-gaap:DesignatedAsHedgingInstrument


Derivative
Period End2021-06-30
Value981
Percentage of DerivativeNotionalAmount76.1

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

us-gaap:ForeignExchangeContract, us-gaap:Nondesignated


Derivative
Period End2021-06-302021-03-312020-12-31
Value3081367368
Percentage of DerivativeNotionalAmount23.90.00.0

us-gaap:DerivativeNotionalAmount us-gaap:HedgingDesignation

us-gaap:Nondesignated


Derivative
Period End2021-06-302021-03-312020-12-31
Value12891367368
Percentage of DerivativeNotionalAmount100.00.00.0

us-gaap:EmployeeRelatedLiabilitiesCurrent

us-gaap:EmployeeRelatedLiabilitiesCurrent


Employee
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value623395482512272316112318
Percentage of EmployeeRelatedLiabilitiesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized

us-gaap:EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized


Employee
Period End2021-06-302021-03-312020-12-312020-09-30
Value336337226236
Percentage of EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized100.0100.0100.0100.0

us-gaap:FinanceLeaseLiability

us-gaap:FinanceLeaseLiability


Finance
Period End2021-06-302021-03-312020-12-312020-09-30
Value487183134108
Percentage of FinanceLeaseLiability100.0100.0100.0100.0

us-gaap:FinanceLeaseLiabilityCurrent

us-gaap:FinanceLeaseLiabilityCurrent


Finance
Period End2021-06-302021-03-312020-12-31
Value1594524
Percentage of FinanceLeaseLiabilityCurrent100.0100.0100.0

us-gaap:FinanceLeaseLiabilityNoncurrent

us-gaap:FinanceLeaseLiabilityNoncurrent


Finance
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-01-01
Value32813810910868383837
Percentage of FinanceLeaseLiabilityNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FinanceLeaseLiabilityPaymentsDue

us-gaap:FinanceLeaseLiabilityPaymentsDue


Finance
Period End2021-06-302021-03-312020-12-312020-09-30
Value931559513490
Percentage of FinanceLeaseLiabilityPaymentsDue100.0100.0100.0100.0

us-gaap:FinanceLeaseLiabilityPaymentsDueAfterYearFive

us-gaap:FinanceLeaseLiabilityPaymentsDueAfterYearFive


Finance
Period End2020-12-31
Value428
Percentage of FinanceLeaseLiabilityPaymentsDueAfterYearFive100.0

us-gaap:FinanceLeaseLiabilityPaymentsDueNextTwelveMonths

us-gaap:FinanceLeaseLiabilityPaymentsDueNextTwelveMonths


Finance
Period End2021-06-302021-03-312020-12-312020-09-30
Value174483611
Percentage of FinanceLeaseLiabilityPaymentsDueNextTwelveMonths100.0100.0100.0100.0

us-gaap:FinanceLeaseLiabilityPaymentsDueYearFive

us-gaap:FinanceLeaseLiabilityPaymentsDueYearFive


Finance
Period End2020-12-312020-09-30
Value12440
Percentage of FinanceLeaseLiabilityPaymentsDueYearFive100.0100.0

us-gaap:FinanceLeaseLiabilityPaymentsDueYearFour

us-gaap:FinanceLeaseLiabilityPaymentsDueYearFour


Finance
Period End2021-06-302021-03-312020-12-312020-09-30
Value19131212
Percentage of FinanceLeaseLiabilityPaymentsDueYearFour100.0100.0100.0100.0

us-gaap:FinanceLeaseLiabilityPaymentsDueYearThree

us-gaap:FinanceLeaseLiabilityPaymentsDueYearThree


Finance
Period End2021-06-302021-03-312020-12-312020-09-30
Value19121212
Percentage of FinanceLeaseLiabilityPaymentsDueYearThree100.0100.0100.0100.0

us-gaap:FinanceLeaseLiabilityPaymentsDueYearTwo

us-gaap:FinanceLeaseLiabilityPaymentsDueYearTwo


Finance
Period End2021-06-302021-03-312020-12-312020-09-30
Value19121111
Percentage of FinanceLeaseLiabilityPaymentsDueYearTwo100.0100.0100.0100.0

us-gaap:FinanceLeaseLiabilityPaymentsRemainderOfFiscalYear

us-gaap:FinanceLeaseLiabilityPaymentsRemainderOfFiscalYear


Finance
Period End2021-06-302021-03-312020-09-30
Value100461.858
Percentage of FinanceLeaseLiabilityPaymentsRemainderOfFiscalYear100.0100.0100.0

us-gaap:FinanceLeaseLiabilityUndiscountedExcessAmount

us-gaap:FinanceLeaseLiabilityUndiscountedExcessAmount


Finance
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-31
Value444376379381308254255
Percentage of FinanceLeaseLiabilityUndiscountedExcessAmount100.0100.0100.0100.0100.0100.0100.0

us-gaap:FinanceLeaseLiabilityUndiscountedExcessAmount us-gaap:RealEstateAndAccumulatedDepreciationDescriptionOfProperty, us-gaap:StatementGeographical

mrna:MTCNorth, mrna:NorwoodMassachusetts


Finance
Period End2020-09-302020-06-30
Value11046
Percentage of FinanceLeaseLiabilityUndiscountedExcessAmount28.915.0

mrna:OfficeLaboratoryAndLightManufacturingSpace, mrna:NorwoodMassachusetts


Finance
Period End2020-12-31
Value338
Percentage of FinanceLeaseLiabilityUndiscountedExcessAmount89.4

us-gaap:FinanceLeaseRightOfUseAsset

us-gaap:FinanceLeaseRightOfUseAsset


Finance
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-01-01
Value475995555239.4889.5449.853
Percentage of FinanceLeaseRightOfUseAsset100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FinanceLeaseWeightedAverageDiscountRatePercent

us-gaap:FinanceLeaseWeightedAverageDiscountRatePercent


Finance
Period End2020-12-31
Value13.1
Percentage of FinanceLeaseWeightedAverageDiscountRatePercent100.0

us-gaap:ForeignCurrencyCashFlowHedgeGainLossToBeReclassifiedDuringNext12Months

us-gaap:ForeignCurrencyCashFlowHedgeGainLossToBeReclassifiedDuringNext12Months


Foreign
Period End2021-06-30
Value27
Percentage of ForeignCurrencyCashFlowHedgeGainLossToBeReclassifiedDuringNext12Months100.0

us-gaap:InterestReceivableCurrent

us-gaap:InterestReceivableCurrent


Interest
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value8.09.725107.5068.2956.8357.0447.0446.0617.9093.239
Percentage of InterestReceivableCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:InventoryFinishedGoodsNetOfReserves

us-gaap:InventoryFinishedGoodsNetOfReserves


Inventory
Period End2021-06-302021-03-312020-12-31
Value41121.29
Percentage of InventoryFinishedGoodsNetOfReserves100.0100.0100.0

us-gaap:InventoryRawMaterialsNetOfReserves

us-gaap:InventoryRawMaterialsNetOfReserves


Inventory
Period End2021-06-302021-03-312020-12-31
Value37843036
Percentage of InventoryRawMaterialsNetOfReserves100.0100.0100.0

us-gaap:InventoryWorkInProcessNetOfReserves

us-gaap:InventoryWorkInProcessNetOfReserves


Inventory
Period End2021-06-302021-03-312020-12-31
Value224529.015
Percentage of InventoryWorkInProcessNetOfReserves100.0100.0100.0

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths


Lessee
Period End2021-06-302021-03-312020-12-312020-09-30
Value23161515
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths100.0100.0100.0100.0

us-gaap:LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear

us-gaap:LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear


Lessee
Period End2021-06-302021-03-312020-09-30
Value9.0122.77
Percentage of LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear100.0100.0100.0

us-gaap:LettersOfCreditOutstandingAmount us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency

us-gaap:LettersOfCreditOutstandingAmount

us-gaap:FairValueInputsLevel1, us-gaap:FairValueMeasurementsNonrecurring


Letters
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value1211121211
Percentage of LettersOfCreditOutstandingAmount100.0100.0100.0100.0100.0

us-gaap:OperatingLeaseWeightedAverageDiscountRatePercent

us-gaap:OperatingLeaseWeightedAverageDiscountRatePercent


Operating
Period End2020-12-31
Value10.3
Percentage of OperatingLeaseWeightedAverageDiscountRatePercent100.0

us-gaap:OperatingLossCarryforwards us-gaap:IncomeTaxAuthority

us-gaap:OperatingLossCarryforwards

us-gaap:DomesticCountry


Operating
Period End2020-12-312019-12-312018-12-31
Value2260981426
Percentage of OperatingLossCarryforwards100.0100.0100.0

us-gaap:StateAndLocalJurisdiction


Operating
Period End2020-12-312019-12-312018-12-31
Value1700978402
Percentage of OperatingLossCarryforwards75.299.794.2

us-gaap:OtherCommitment us-gaap:MajorCustomers

us-gaap:OtherCommitment

mrna:BiomedicalAdvancedResearchAndDevelopmentAuthority


Other
Period End2021-03-312020-07-312020-07-26
Value63471471
Percentage of OtherCommitment100.0100.0100.0

us-gaap:OtherPrepaidExpenseCurrent

us-gaap:OtherPrepaidExpenseCurrent


Other
Period End2021-06-302021-03-312020-12-312020-09-302019-12-31
Value592216628.475
Percentage of OtherPrepaidExpenseCurrent100.0100.0100.0100.0100.0

us-gaap:OtherSundryLiabilitiesCurrent

us-gaap:OtherSundryLiabilitiesCurrent


Other
Period End2021-06-302020-12-312019-12-31
Value663.3651.48
Percentage of OtherSundryLiabilitiesCurrent100.0100.0100.0

us-gaap:PrepaidExpenseCurrent

us-gaap:PrepaidExpenseCurrent


Prepaid
Period End2020-12-312020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value1520128.4759.739.1387.895107.839
Percentage of PrepaidExpenseCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAccumulatedDepreciationAndAmortization

us-gaap:PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAccumulatedDepreciationAndAmortization


Property
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302019-12-31
Value20413511911110394
Percentage of PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAccumulatedDepreciationAndAmortization100.0100.0100.0100.0100.0100.0

us-gaap:PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortization

us-gaap:PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortization


Property
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302019-12-31
Value794372296276229201
Percentage of PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortization100.0100.0100.0100.0100.0100.0

us-gaap:PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetBeforeAccumulatedDepreciationAndAmortization

us-gaap:PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetBeforeAccumulatedDepreciationAndAmortization


Property
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302019-12-31
Value998507416388333296
Percentage of PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetBeforeAccumulatedDepreciationAndAmortization100.0100.0100.0100.0100.0100.0

us-gaap:PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetBeforeAccumulatedDepreciationAndAmortization us-gaap:PropertyPlantAndEquipmentByType

mrna:FinancingRightOfUseAsset


Property
Period End2021-06-302021-03-312020-12-312019-12-31
Value545108569.853
Percentage of PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetBeforeAccumulatedDepreciationAndAmortization54.621.313.53.3

mrna:RightOfUseAssetFinancing


Property
Period End2020-09-302020-06-302019-12-31
Value56249.853
Percentage of PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetBeforeAccumulatedDepreciationAndAmortization14.57.23.3

us-gaap:ComputerEquipment


Property
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302019-12-31
Value141513121211
Percentage of PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetBeforeAccumulatedDepreciationAndAmortization1.43.03.23.23.74.0

us-gaap:ConstructionInProgress


Property
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302019-12-31
Value83633431123.222
Percentage of PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetBeforeAccumulatedDepreciationAndAmortization8.312.48.38.03.91.1

us-gaap:Equipment


Property
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302019-12-31
Value142125120113111108
Percentage of PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetBeforeAccumulatedDepreciationAndAmortization14.224.729.029.133.436.6

us-gaap:LeaseholdImprovements


Property
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302019-12-31
Value199184179163161152
Percentage of PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetBeforeAccumulatedDepreciationAndAmortization19.936.343.242.148.451.5

us-gaap:PropertyPlantAndEquipmentOtherTypes


Property
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302019-12-31
Value6.05.04.6624.6134.4513.316
Percentage of PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetBeforeAccumulatedDepreciationAndAmortization0.61.01.11.21.31.1

us-gaap:SoftwareDevelopment


Property
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302019-12-31
Value9.07.07.027.027.027.02
Percentage of PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetBeforeAccumulatedDepreciationAndAmortization0.91.41.71.82.12.4

us-gaap:PurchaseCommitmentRemainingMinimumAmountCommitted us-gaap:PurchaseCommitmentExcludingLongtermCommitment

us-gaap:PurchaseCommitmentRemainingMinimumAmountCommitted

mrna:ClinicalOperationsAndSupportCommitment


Purchase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302018-12-31
Value1300993896747264133105958364
Percentage of PurchaseCommitmentRemainingMinimumAmountCommitted100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

mrna:ClinicalServices


Purchase
Period End2021-06-302021-03-312020-12-31
Value493027
Percentage of PurchaseCommitmentRemainingMinimumAmountCommitted3.83.03.0

mrna:SupplyAndManufacturingAgreements


Purchase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-30
Value15001000659500613201
Percentage of PurchaseCommitmentRemainingMinimumAmountCommitted115.4100.773531.182.176.1

us-gaap:PurchaseCommitment


Purchase
Period End2020-09-302020-06-302020-03-312019-12-312018-12-31
Value165.43.94.52.5
Percentage of PurchaseCommitmentRemainingMinimumAmountCommitted2.32.02.94.23.9

us-gaap:PurchaseCommitmentRemainingMinimumAmountCommitted us-gaap:SubsequentEventType

us-gaap:SubsequentEvent


Purchase
Period End2021-05-072021-02-26
Value284314
Percentage of PurchaseCommitmentRemainingMinimumAmountCommitted0.00.0

us-gaap:RestrictedCashCurrent

us-gaap:RestrictedCashCurrent


Restricted
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value1032000.01032000.01032000.01032000.01032000.01032000.062000.00595000.0831000.0831000.0237000.0951000.0
Percentage of RestrictedCashCurrent100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0

us-gaap:RestrictedCashNoncurrent

us-gaap:RestrictedCashNoncurrent


Restricted
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value111111111010101011111111111111
Percentage of RestrictedCashNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RevenueRemainingPerformanceObligation

us-gaap:RevenueRemainingPerformanceObligation


Revenue
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value87104104278249261268279
Percentage of RevenueRemainingPerformanceObligation100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RevenueRemainingPerformanceObligation mrna:PerformanceObligation, us-gaap:ResearchAndDevelopmentArrangementContractToPerformForOthersByType

mrna:Combined2018AZAgreementPerformanceObligation, mrna:Combined2018AZAgreements


Revenue
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-01-01
Value293293293293293293292
Percentage of RevenueRemainingPerformanceObligation336.2279.4279.4105.2117.5112.30.0

mrna:DevelopmentAndCommercializationLicenseAndManufacturingObligationsForIL12, mrna:Combined2018AZAgreements


Revenue
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-01-01
Value85888888909089
Percentage of RevenueRemainingPerformanceObligation98.383.983.931.636.434.80.0

mrna:DevelopmentAndCommercializationRightsAndManufacturingServicesForAnOncologyDevelopmentTarget, mrna:Combined2018AZAgreements


Revenue
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-01-01
Value1.5911.5911.5911.61.61.61.6
Percentage of RevenueRemainingPerformanceObligation1.81.51.50.60.60.60.0

mrna:IL12PerformanceObligation, mrna:Combined2018AZAgreements


Revenue
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-01-01
Value8.1338.1338.1338.18.18.18.1
Percentage of RevenueRemainingPerformanceObligation9.37.77.72.93.23.10.0

mrna:KRASPerformanceObligation, mrna:PCVSAVAgreement


Revenue
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-01-01
Value7.0047.0047.0047.06.76.76.7
Percentage of RevenueRemainingPerformanceObligation8.06.76.72.52.72.60.0

mrna:OncologyDevelopmentTargetPerformanceObligation, mrna:Combined2018AZAgreements


Revenue
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-01-01
Value8.1338.1338.1338.18.18.18.1
Percentage of RevenueRemainingPerformanceObligation9.37.77.72.93.23.10.0

mrna:PCVPerformanceObligation, mrna:PCVSAVAgreement


Revenue
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-01-01
Value206206206206206206206
Percentage of RevenueRemainingPerformanceObligation236.6196.6196.674.082.779.00.0

us-gaap:RevenueRemainingPerformanceObligation us-gaap:ContractWithCustomerBasisOfPricing, us-gaap:ResearchAndDevelopmentArrangementContractToPerformForOthersByType

mrna:ChiesiAgreementTransactionPrice, mrna:ChiesiAgreement


Revenue
Period End2020-12-31
Value42
Percentage of RevenueRemainingPerformanceObligation48.7

mrna:ClinicalSupplyReimbursement, mrna:PCVSAVAgreement


Revenue
Period End2020-12-312020-09-302020-06-302020-03-312019-12-31
Value0.310.310.310.30.0
Percentage of RevenueRemainingPerformanceObligation0.40.30.30.10.0

mrna:EstimatedReimbursement, mrna:Combined2018AZAgreements


Revenue
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-01-01
Value353838384040
Percentage of RevenueRemainingPerformanceObligation41.136.336.313.716.30.0

mrna:MaterialRightForTheFirstProductDevelopmentAndCommercializationLicense, mrna:ChiesiAgreement


Revenue
Period End2020-09-30
Value17
Percentage of RevenueRemainingPerformanceObligation16.7

mrna:MaterialRightForTheSecondProductDevelopmentAndCommercializationLicense, mrna:ChiesiAgreement


Revenue
Period End2020-09-30
Value7.5
Percentage of RevenueRemainingPerformanceObligation7.1

mrna:RemainingUnsatisfiedPerformanceObligation, mrna:ChiesiAgreement


Revenue
Period End2020-12-31
Value42
Percentage of RevenueRemainingPerformanceObligation48.5

mrna:ResearchAndDevelopmentFunding, mrna:ChiesiAgreement


Revenue
Period End2020-12-312020-09-30
Value1717
Percentage of RevenueRemainingPerformanceObligation20.116.8

mrna:ResearchAndDevelopmentFunding, mrna:StrategicCollaborationAndLicenseAgreementWithVertexPharmaceuticalsIncorporatedAndVertexPharmaceuticalsEuropeLimited


Revenue
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-06-302019-01-01
Value2.52.52.52.5312.14.4
Percentage of RevenueRemainingPerformanceObligation2.92.42.40.912.50.80.0

mrna:ResearchAndDevelopmentFunding, mrna:VertexFirst


Revenue
Period End2020-12-312020-09-302020-06-30
Value394632
Percentage of RevenueRemainingPerformanceObligation45.644.231.4

mrna:SublicenseReimbursement, mrna:VEGFExercise2016


Revenue
Period End2020-12-312020-09-302020-06-302020-03-312019-12-31
Value2.252.252.252.32.25
Percentage of RevenueRemainingPerformanceObligation2.62.12.10.80.9

mrna:UpfrontPayment, mrna:StrategicCollaborationAndLicenseAgreementWithVertexPharmaceuticalsIncorporatedAndVertexPharmaceuticalsEuropeLimited


Revenue
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-06-302019-01-01
Value2.02.02.02.04.02.020
Percentage of RevenueRemainingPerformanceObligation2.31.91.90.71.60.70.0

mrna:UpfrontPaymentPremiumAssociatedWithContemporaneousSaleOfPreferredStock, mrna:PCVSAVAgreement


Revenue
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-01-01
Value131313131313
Percentage of RevenueRemainingPerformanceObligation15.012.412.44.75.20.0

mrna:UpfrontPaymentResearchAndDevelopment, mrna:MerckAgreement2015


Revenue
Period End2020-12-312020-09-302020-06-302019-12-312019-01-01
Value5.05.05.05.050
Percentage of RevenueRemainingPerformanceObligation5.74.84.82.00.0

mrna:VariableConsideration, mrna:VEGFExercise2016


Revenue
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-01-01
Value181818181515
Percentage of RevenueRemainingPerformanceObligation20.717.217.26.56.30.0

us-gaap:RevenueRemainingPerformanceObligation us-gaap:ProductOrService

mrna:CollaborationArrangementIncludingArrangementsWithAffiliate


Revenue
Period End2021-06-302021-03-312020-12-312020-09-30
Value321314327366
Percentage of RevenueRemainingPerformanceObligation0.00.0375.7349.4

us-gaap:RevenueRemainingPerformanceObligation us-gaap:ResearchAndDevelopmentArrangementContractToPerformForOthersByType

mrna:ChiesiAgreement


Revenue
Period End2020-12-312020-09-30
Value4242
Percentage of RevenueRemainingPerformanceObligation48.740.6

mrna:Combined2018AZAgreements


Revenue
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312019-01-01
Value3963993991069.7100102102400
Percentage of RevenueRemainingPerformanceObligation454.9380.3380.338.13.938.638.336.80.0

mrna:MerckAgreement2015


Revenue
Period End2020-12-312020-09-302020-06-302019-12-312019-01-01
Value5254555965
Percentage of RevenueRemainingPerformanceObligation60.451.752.723.90.0

mrna:PCVSAVAgreement


Revenue
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312019-01-01
Value2132132132138393104115213
Percentage of RevenueRemainingPerformanceObligation244.6203.3203.376.533.635.939.041.10.0

mrna:VEGFExercise2016


Revenue
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312019-01-01
Value606060605353515155
Percentage of RevenueRemainingPerformanceObligation69.157.557.521.621.520.519.118.20.0

mrna:VertexFirst


Revenue
Period End2020-12-312020-09-302020-06-30
Value435036
Percentage of RevenueRemainingPerformanceObligation50.248.035.2

us-gaap:SecurityDeposit us-gaap:StatementGeographical, us-gaap:LeaseArrangementType, us-gaap:StatementScenario

us-gaap:SecurityDeposit

mrna:CambridgeMassachusetts, mrna:TwoHundredTechnologySquare, us-gaap:ScenarioForecast


Security
Period End2020-12-01
Value2200000.0
Percentage of SecurityDeposit100.0

us-gaap:SecurityDeposit us-gaap:StatementGeographical, us-gaap:StatementScenario, us-gaap:LeaseArrangementType

mrna:CambridgeMassachusetts, srt:ScenarioForecast, mrna:TwoHundredTechnologySquare


Security
Period End2020-12-01
Value2200000.0
Percentage of SecurityDeposit100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber

us-gaap:RestrictedStockUnitsRSU


Share
Period End2021-06-302021-03-312020-12-312020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-312016-12-31
Value2320000.02390000.02190000.01980100.02062100.01177200.01659200.01073900.01011500.0458720.0458720.0458720.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue

us-gaap:RestrictedStockUnitsRSU


Share
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
Value64.457.2830.8528.3723.122.1819.0117.1317.0816.76011.9311.93
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized


Share
Period End2021-06-302021-03-312020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value606269756468717258
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized us-gaap:AwardType

us-gaap:EmployeeStockOption


Share
Period End2021-06-302021-03-312020-06-302020-03-312019-12-312018-12-31
Value333541474650
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized55.056.559.962.872.186.7

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant us-gaap:PlanName

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant

mrna:StockOptionAndIncentivePlan2018


Share
Period End2021-06-302021-03-312020-12-312020-09-302019-12-312018-12-31
Value27272728187.8
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant100.0100.0100.0100.0100.0100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber


Share
Period End2021-06-302021-03-31
Value1717
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber100.0100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice


Share
Period End2021-06-302021-03-312020-12-312020-09-30
Value12.1611.6110.9910.96
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice100.0100.0100.0100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue


Share
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value65473649297620221934669286201181412220130
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingAggregateIntrinsicValue

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingAggregateIntrinsicValue


Share
Period End2021-06-302021-03-312020-12-312020-09-30
Value271015421343926
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingAggregateIntrinsicValue100.0100.0100.0100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingNumber

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingNumber


Share
Period End2021-06-302021-03-31
Value1315
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingNumber100.0100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingWeightedAverageExercisePrice

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingWeightedAverageExercisePrice


Share
Period End2021-06-302021-03-312020-12-312020-09-30
Value36.6232.5123.6121.86
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingWeightedAverageExercisePrice100.0100.0100.0100.0

us-gaap:SharePrice us-gaap:AwardType, us-gaap:PlanName

us-gaap:SharePrice

us-gaap:EmployeeStock, mrna:EmployeeStockPurchasePlan2018


Share
Period End2020-12-312019-12-31
Value27.9716.87
Percentage of SharePrice100.0100.0

us-gaap:SharePrice us-gaap:Range, us-gaap:AwardType

srt:WeightedAverage, us-gaap:EmployeeStock


Share
Period End2020-12-312020-09-302020-06-302019-12-312019-09-302019-06-30
Value32.1820.6420.645.9819.8519.85
Percentage of SharePrice115.10.00.035.40.00.0

srt:WeightedAverage, us-gaap:EmployeeStockOption


Share
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-31
Value19.318.115.3813.8411.3511.7111.8712.169.338.688.638.487.963.82
Percentage of SharePrice69.00.00.00.067.30.00.00.00.00.00.00.00.00.0

us-gaap:SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1

us-gaap:SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1


Sharebased
Period End2021-06-302021-03-312020-12-312020-09-30
Value3837210716321097
Percentage of SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1100.0100.0100.0100.0

us-gaap:SignificantSupplyCommitmentRemainingMinimumAmountCommitted us-gaap:SubsequentEventType

us-gaap:SignificantSupplyCommitmentRemainingMinimumAmountCommitted

us-gaap:SubsequentEvent


Significant
Period End2021-02-26
Value125
Percentage of SignificantSupplyCommitmentRemainingMinimumAmountCommitted100.0

us-gaap:StockRepurchaseProgramAuthorizedAmount1 us-gaap:SubsequentEventType

us-gaap:StockRepurchaseProgramAuthorizedAmount1

us-gaap:SubsequentEvent


Stock
Period End2021-08-02
Value1000
Percentage of StockRepurchaseProgramAuthorizedAmount1100.0

us-gaap:TaxCreditCarryforwardAmount us-gaap:IncomeTaxAuthority, us-gaap:TaxCreditCarryforward

us-gaap:TaxCreditCarryforwardAmount

us-gaap:DomesticCountry, us-gaap:Research


Tax
Period End2020-12-312019-12-312018-12-31
Value734536
Percentage of TaxCreditCarryforwardAmount100.0100.0100.0

us-gaap:StateAndLocalJurisdiction, mrna:FederalOrphanDrug


Tax
Period End2020-12-312019-12-31
Value2.01.5
Percentage of TaxCreditCarryforwardAmount2.73.3

us-gaap:StateAndLocalJurisdiction, us-gaap:InvestmentCredit


Tax
Period End2020-12-312019-12-312018-12-31
Value3.95.92.5
Percentage of TaxCreditCarryforwardAmount5.312.96.8

us-gaap:StateAndLocalJurisdiction, us-gaap:Research


Tax
Period End2020-12-312019-12-312018-12-31
Value262318
Percentage of TaxCreditCarryforwardAmount35.652.451.1

us-gaap:TenantImprovements us-gaap:StatementGeographical

us-gaap:TenantImprovements

mrna:NorwoodMassachusetts


Tenant
Period End2020-12-31
Value22
Percentage of TenantImprovements100.0

us-gaap:ValueAddedTaxReceivableCurrent

us-gaap:ValueAddedTaxReceivableCurrent


Value
Period End2021-06-302020-12-31
Value517.0
Percentage of ValueAddedTaxReceivableCurrent100.0100.0

Line plots across dimensions of each concept


us-gaap:AllocatedShareBasedCompensationExpense
us-gaap:AwardType
(None,)
Allocated Share Based Compensation Expenseus-gaap: Award Type
us-gaap:AllocatedShareBasedCompensationExpense
us-gaap:IncomeStatementLocation
(None,)
Allocated Share Based Compensation Expenseus-gaap: Income Statement Location
us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax
us-gaap:ProductOrService, us-gaap:ResearchAndDevelopmentArrangementContractToPerformForOthersByType
('mrna:CollaborationArrangement', None)
Revenue From Contract With Customer Excluding Assessed Taxus-gaap: Product Or Service, us-gaap: Research And Development Arrangement Contract To Perform For Others By Type
us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax
us-gaap:ResearchAndDevelopmentArrangementContractToPerformForOthersByType
(None,)
Revenue From Contract With Customer Excluding Assessed Taxus-gaap: Research And Development Arrangement Contract To Perform For Others By Type
us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax
us-gaap:CounterpartyName, us-gaap:ProductOrService
(None, 'mrna:CollaborationArrangementIncludingArrangementsWithAffiliate')
Revenue From Contract With Customer Excluding Assessed Taxus-gaap: Counterparty Name, us-gaap: Product Or Service
us-gaap:Revenues
us-gaap:MajorCustomers, us-gaap:ProductOrService
(None, 'us-gaap:Grant')
Revenuesus-gaap: Major Customers, us-gaap: Product Or Service
us-gaap:Revenues
us-gaap:ProductOrService
(None,)
Revenuesus-gaap: Product Or Service
us-gaap:Revenues
us-gaap:ProductOrService, us-gaap:StatementGeographical
('mrna:ProductSales', None)
Revenuesus-gaap: Product Or Service, us-gaap: Statement Geographical
us-gaap:StockholdersEquity
us-gaap:StatementEquityComponents
(None,)
Stockholders Equityus-gaap: Statement Equity Components
us-gaap:StockholdersEquity
us-gaap:StatementEquityComponents
(None,)
Stockholders Equityus-gaap: Statement Equity Components
us-gaap:StockIssuedDuringPeriodValueNewIssues
us-gaap:StatementEquityComponents
(None,)
Stock Issued During Period Value New Issuesus-gaap: Statement Equity Components