DBX


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

Table of contents


us-gaap:StatementEquityComponents
us-gaap:SharesOutstanding
us-gaap:StatementClassOfStock
us-gaap:CommonStockSharesIssued
us-gaap:StatementClassOfStock
us-gaap:CommonStockSharesOutstanding

us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding
us-gaap:StatementClassOfStock

us-gaap:WeightedAverageNumberOfSharesOutstandingBasic
us-gaap:StatementClassOfStock

us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount
us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecurities

us-gaap:EarningsPerShareBasic
us-gaap:StatementClassOfStock

us-gaap:EarningsPerShareDiluted
us-gaap:StatementClassOfStock
us-gaap:AwardType, us-gaap:PlanName
us-gaap:AllocatedShareBasedCompensationExpense
us-gaap:IncomeStatementLocation

us-gaap:ComprehensiveIncomeNetOfTax

us-gaap:CostOfGoodsAndServicesSold

us-gaap:CostOfRevenue

us-gaap:GeneralAndAdministrativeExpense

us-gaap:GrossProfit

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest

us-gaap:IncomeTaxExpenseBenefit
us-gaap:DebtInstrument
us-gaap:InterestExpenseDebt
us-gaap:DebtInstrument, us-gaap:LongtermDebtType

us-gaap:InterestIncomeExpenseNonoperatingNet

us-gaap:NetIncomeLoss
us-gaap:StatementClassOfStock
us-gaap:StatementEquityComponents
us-gaap:StatementClassOfStock
us-gaap:NetIncomeLossAvailableToCommonStockholdersDiluted

us-gaap:OperatingExpenses

us-gaap:OperatingIncomeLoss

us-gaap:OtherNonoperatingIncomeExpense

us-gaap:ResearchAndDevelopmentExpense

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax
us-gaap:StatementGeographical

us-gaap:Revenues

us-gaap:SellingAndMarketingExpense

us-gaap:Assets

us-gaap:Liabilities

us-gaap:LiabilitiesAndStockholdersEquity

us-gaap:StockholdersEquity
us-gaap:StatementEquityComponents

us-gaap:AssetsCurrent

us-gaap:CashAndCashEquivalentsAtCarryingValue
us-gaap:CashAndCashEquivalents

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents

us-gaap:AccountsReceivableNetCurrent

us-gaap:PrepaidExpenseAndOtherAssetsCurrent

us-gaap:PropertyPlantAndEquipmentGross
us-gaap:PropertyPlantAndEquipmentByType

us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment

us-gaap:AmortizationOfIntangibleAssets

us-gaap:PropertyPlantAndEquipmentNet
us-gaap:StatementGeographical

us-gaap:Goodwill
us-gaap:BusinessAcquisition

us-gaap:IntangibleAssetsNetExcludingGoodwill

us-gaap:FiniteLivedIntangibleAssetsNet

us-gaap:DeferredTaxAssetsLiabilitiesNet

us-gaap:OperatingLeaseRightOfUseAsset

us-gaap:OtherAssetsNoncurrent

us-gaap:AccountsPayableCurrent

us-gaap:ContractWithCustomerLiabilityCurrent

us-gaap:LiabilitiesCurrent

us-gaap:OperatingLeaseLiabilityCurrent
us-gaap:DebtInstrument, us-gaap:LongtermDebtType
us-gaap:LongTermDebt
us-gaap:LongtermDebtType

us-gaap:OtherLiabilitiesNoncurrent

us-gaap:OperatingLeaseLiabilityNoncurrent

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearTwo

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearThree

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFour

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFive

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive

us-gaap:OperatingLeaseLiability

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDue

us-gaap:LesseeOperatingLeaseLiabilityUndiscountedExcessAmount

us-gaap:StockholdersEquity
us-gaap:StatementEquityComponents

us-gaap:AdditionalPaidInCapital

us-gaap:RetainedEarningsAccumulatedDeficit

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax

us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue
us-gaap:StatementEquityComponents

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect

us-gaap:AmortizationOfFinancingCosts

us-gaap:IncreaseDecreaseInAccountsPayable

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetIncomeLoss
us-gaap:StatementClassOfStock
us-gaap:StatementEquityComponents

us-gaap:ShareBasedCompensation

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:PaymentsToAcquirePropertyPlantAndEquipment

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:PaymentsForRepurchaseOfCommonStock

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber
us-gaap:PlanName

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod
us-gaap:TitleOfIndividual, us-gaap:AwardType, us-gaap:PlanName

us-gaap:DeferredTaxAssetsNet

us-gaap:UnrecognizedTaxBenefits
us-gaap:IncomeTaxAuthority, us-gaap:TaxCreditCarryforward

us-gaap:DeferredTaxAssetsValuationAllowance

us-gaap:ProceedsFromSaleOfShortTermInvestments

dbx:AdjustmentsToAdditionalPaidInCapitalConvertibleDebtTaxBenefitsAttributableToBondHedges
us-gaap:StatementEquityComponents

dbx:AllocatedSharebasedCompensationExpensePostCombination
us-gaap:BusinessAcquisition
us-gaap:BusinessAcquisition
dbx:BusinessCombinationConsiderationTransferredStockOptionsAssumed

dbx:CapitalizedContractCostsAdditions

dbx:DeprecationDepletionAndAmortizationExcludingAmortizationOfDeferredSalesCommissions
us-gaap:StatementClassOfStock
dbx:DilutiveSecuritiesEffectOnBasicEPSDilutiveEffectOfReallocation

dbx:IncreaseDecreaseInAccruedLiabilitiesAndOtherLiabilities

dbx:IncreaseDecreaseTenantImprovementAllowanceReimbursement
dbx:LeaseArrangements
us-gaap:StatementClassOfStock
dbx:IncrementalCommonSharesAttributabletoDilutiveEffectofConversionofCommonStock
us-gaap:PropertyPlantAndEquipmentByType
dbx:PropertyPlantAndEquipmentFullyDepreciatedAssetsRetired
us-gaap:AwardType, us-gaap:BusinessAcquisition
dbx:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsAwardsAssumedInPeriodAggregateFairValue
us-gaap:AwardType, us-gaap:BusinessAcquisition
dbx:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsAwardsAssumedInPeriodWeightedAverageGrantDateFairValue

dbx:ShareBasedCompensationArrangementBySharebasedPaymentAwardDecreaseInNumberofSharesAuthorizedFromStockGranted

dbx:SharebasedCompensationArrangementBySharebasedPaymentAwardSharesCanceled

dbx:SharebasedCompensationArrangementbySharebasedPaymentAwardAssumedThroughBusinessAcquisition
us-gaap:AwardType
dbx:SharebasedCompensationArrangementbySharebasedPaymentAwardEquityInstrumentsOtherthanOptionsReleasedinPeriod
us-gaap:AwardType
dbx:SharebasedCompensationArrangementbySharebasedPaymentAwardEquityInstrumentsOtherthanOptionsReleasedinPeriodWeightedAverageGrantDateFairValue

dbx:SharebasedCompensationArrangementbySharebasedPaymentAwardOptionsAssumedInBusinessAcquisitionWeightedAverageExercisePrice

dbx:SharebasedCompensationArrangementbySharebasedPaymentAwardOptionsAssumedThroughBusinessAcquisition
us-gaap:BusinessAcquisition

dbx:SharebasedCompensationArrangementbySharebasedPaymentAwardOptionsAssumedThroughBusinessAcquisitionFairValue
us-gaap:BusinessAcquisition

dbx:SharebasedCompensationArrangementbySharebasedPaymentAwardOptionsAssumedinPeriodWeightedAverageGrantDateFairValue
us-gaap:BusinessAcquisition
us-gaap:AwardType
dbx:SharesPaidForTaxWithholdingForShareBasedCompensationWeightedAverageGrantDateFairValue
us-gaap:StatementEquityComponents
dbx:SharesReleasedDuringPeriodShares

dbx:UnrecognizedTaxBenefitsthatWouldImpactEffectiveTaxRateDuringThePeriod

us-gaap:AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation
us-gaap:StatementEquityComponents

us-gaap:AdjustmentsToAdditionalPaidInCapitalConvertibleDebtWithConversionFeature
us-gaap:StatementEquityComponents

us-gaap:AdjustmentsToAdditionalPaidInCapitalWarrantIssued
us-gaap:StatementEquityComponents

us-gaap:AssetImpairmentCharges
us-gaap:BusinessAcquisition
us-gaap:BusinessCombinationAcquisitionRelatedCosts
us-gaap:BusinessAcquisition
us-gaap:BusinessCombinationConsiderationTransferred1

us-gaap:CapitalizedContractCostAmortization
us-gaap:MajorCustomers, us-gaap:ConcentrationRiskByBenchmark, us-gaap:ConcentrationRiskByType
us-gaap:ConcentrationRiskPercentage1

us-gaap:ContractWithCustomerLiabilityRevenueRecognized
us-gaap:StatementClassOfStock
us-gaap:ConversionOfStockSharesConverted1

us-gaap:Depreciation
us-gaap:DerivativeInstrumentRisk
us-gaap:DerivativeCostOfHedge
us-gaap:StatementClassOfStock
us-gaap:DilutiveSecuritiesEffectOnBasicEarningsPerShareOther

us-gaap:EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents

us-gaap:EquitySecuritiesFvNiGainLoss

us-gaap:FinanceLeasePrincipalPayments
us-gaap:BusinessAcquisition
us-gaap:FinitelivedIntangibleAssetsAcquired1
us-gaap:BusinessAcquisition, us-gaap:FiniteLivedIntangibleAssetsByMajorClass

us-gaap:ForeignCurrencyTransactionGainLossBeforeTax

us-gaap:GoodwillAcquiredDuringPeriod

us-gaap:GoodwillForeignCurrencyTranslationGainLoss

us-gaap:ImpairmentOfLeasehold

us-gaap:ImpairmentOfRealEstate

us-gaap:IncreaseDecreaseInAccountsAndOtherReceivables

us-gaap:IncreaseDecreaseInContractWithCustomerLiability

us-gaap:IncreaseDecreaseInEmployeeRelatedLiabilities

us-gaap:IncreaseDecreaseInOtherNoncurrentLiabilities

us-gaap:IncreaseDecreaseInOtherOperatingAssets

us-gaap:IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets
us-gaap:StatementClassOfStock
us-gaap:IncrementalCommonSharesAttributableToShareBasedPaymentArrangements

us-gaap:InvestmentIncomeNet
us-gaap:Range, us-gaap:StatementScenario
us-gaap:OperatingLeaseImpairmentLoss
us-gaap:DerivativeInstrumentRisk
us-gaap:OptionIndexedToIssuersEquityStrikePrice1

us-gaap:OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentNetOfTaxPortionAttributableToParent

us-gaap:OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent

us-gaap:OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent
us-gaap:StatementEquityComponents

us-gaap:OtherNoncashIncomeExpense
us-gaap:BusinessAcquisition
us-gaap:OtherPaymentsToAcquireBusinesses

us-gaap:PaymentsForHedgeFinancingActivities

us-gaap:PaymentsForProceedsFromOtherInvestingActivities

us-gaap:PaymentsOfDebtIssuanceCosts

us-gaap:PaymentsRelatedToTaxWithholdingForShareBasedCompensation

us-gaap:PaymentsToAcquireAvailableForSaleSecuritiesDebt
us-gaap:BusinessAcquisition
us-gaap:PaymentsToAcquireBusinessesGross

us-gaap:PaymentsToAcquireBusinessesNetOfCashAcquired

us-gaap:ProceedsFromConvertibleDebt
us-gaap:DebtInstrument, us-gaap:LongtermDebtType

us-gaap:ProceedsFromIssuanceOfCommonStock

us-gaap:ProceedsFromIssuanceOfWarrants

us-gaap:ProceedsFromMaturitiesPrepaymentsAndCallsOfShorttermInvestments

us-gaap:ProceedsFromPaymentsForOtherFinancingActivities

us-gaap:RightOfUseAssetObtainedInExchangeForFinanceLeaseLiability
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfAdditionalSharesAuthorized

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriodWeightedAverageExercisePrice

us-gaap:ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice

us-gaap:SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedOptionsForfeitedNumberOfShares

us-gaap:SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedNumberOfShares

us-gaap:SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedWeightedAverageGrantDateFairValue

us-gaap:SharesPaidForTaxWithholdingForShareBasedCompensation
us-gaap:StatementEquityComponents

us-gaap:StockIssuedDuringPeriodSharesStockOptionsExercised
us-gaap:StatementEquityComponents

us-gaap:StockIssuedDuringPeriodValueAcquisitions
us-gaap:StatementEquityComponents

us-gaap:StockIssuedDuringPeriodValueStockOptionsExercised
us-gaap:StatementEquityComponents

us-gaap:StockRepurchasedAndRetiredDuringPeriodShares
us-gaap:LongtermDebtType

us-gaap:StockRepurchasedAndRetiredDuringPeriodValue
us-gaap:StatementEquityComponents
us-gaap:StockRepurchasedDuringPeriodShares

us-gaap:StockRepurchasedDuringPeriodValue
us-gaap:StatementEquityComponents

us-gaap:SubleaseIncome
us-gaap:BusinessAcquisition
us-gaap:UnrecognizedTaxBenefitsDecreasesResultingFromAcquisition

us-gaap:UnrecognizedTaxBenefitsPeriodIncreaseDecrease

us-gaap:UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations
us-gaap:CreditFacility, us-gaap:DebtInstrument, us-gaap:LongtermDebtType
us-gaap:WriteOffOfDeferredDebtIssuanceCost

dbx:AccruedLiabilitiesandOtherLiabilitiesCurrent

dbx:AvailableForSaleSecuritiesDebtMaturitiesAfterThreeYearsAmortizedCost

dbx:AvailableForSaleSecuritiesDebtMaturitiesAfterThreeYearsFairValue

dbx:BusinessCombinationSeparatelyRecognizedTransactionsPreexistingRelationshipPersonnelAgreement
us-gaap:BusinessAcquisition

dbx:CashCashEquivalentsAndShortTermInvestmentsAmortizedCost
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency
dbx:CashEquivalentsAndShorttermInvestments
us-gaap:FairValueByMeasurementFrequency

dbx:DebtSecuritiesAvailableForSaleSecuritiesMaturityAllocatedAndSingleMaturityDateAfterOneThroughThreeYearsAmortizedCost

dbx:DebtSecuritiesAvailableForSaleSecuritiesMaturityAllocatedAndSingleMaturityDateAfterOneThroughThreeYearsFairValue
us-gaap:IncomeTaxAuthority
dbx:DeferredTaxAssetsAcquiredOperatingLossCarryforwardsNotSubjecttoExpiration

dbx:DeferredTaxAssetsLeaseLiability
us-gaap:IncomeTaxAuthority
dbx:DeferredTaxAssetsOperatingLossCarryforwardsNotSubjecttoExpirationAvailableToReduceFutureTaxableIncome

dbx:DeferredTaxLiabilitiesFixedAndIntangibleAssets

dbx:DeferredTaxLiabilitiesRightOfUseAssets

dbx:FinanceLeaseLiabilityInterestAndTaxes

dbx:FiniteLivedIntangibleAssetExpectedAmortizationafterYearFour

dbx:LesseeOperatingAndShortTermLeasesPaymentsDue

dbx:LesseeOperatingAndShortTermLeasesPaymentsDueAfterYearFive

dbx:LesseeOperatingAndShortTermLeasesPaymentsDueYearFive

dbx:LesseeOperatingAndShortTermLeasesPaymentsDueYearFour

dbx:LesseeOperatingAndShortTermLeasesPaymentsDueYearOne

dbx:LesseeOperatingAndShortTermLeasesPaymentsDueYearThree

dbx:LesseeOperatingAndShortTermLeasesPaymentsDueYearTwo

dbx:LesseeOperatingLeaseLeaseNotYetCommencedAmount

dbx:LesseeOperatingLeaseLiabilitytobePaidafterYearFour

dbx:LesseeOperatingLeaseTenantImprovementAllowanceReceivable

dbx:LessorOperatingLeaseLeaseNotYetCommencedAmount

dbx:OperatingLeaseLessorOperatingLeasePaymentsToBeReceivedLessLeaseIncentives

dbx:OperatingLeaseMinimumObligations

dbx:OtherAccruedLiabilitiesAndOtherLiabilitiesCurrent

dbx:SharebasedCompensationArrangementbySharebasedPaymentAwardOptionsNonvestedAggregateIntrinsicValue

dbx:UnrecognizedTaxBenefitThatWouldResultInAdjustmentToDeferredTaxAssets
us-gaap:StatementClassOfStock
dei:EntityCommonStockSharesOutstanding

us-gaap:AccrualForTaxesOtherThanIncomeTaxesCurrent

us-gaap:AccruedProfessionalFeesCurrent

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

us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax
us-gaap:FinancialInstrument

us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax
us-gaap:FinancialInstrument

us-gaap:AvailableForSaleDebtSecuritiesAmortizedCostBasis
us-gaap:FinancialInstrument

us-gaap:AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss
us-gaap:FinancialInstrument

us-gaap:AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesSingleMaturityDate

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesSingleMaturityDateAmortizedCostBasis

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue

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

us-gaap:AvailableForSaleSecuritiesDebtSecuritiesCurrent
us-gaap:BusinessAcquisition
us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssets
us-gaap:BusinessAcquisition
us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCashAndEquivalents
us-gaap:BusinessAcquisition
us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsPrepaidExpenseAndOtherAssets
us-gaap:BusinessAcquisition
us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesAccountsPayable
us-gaap:BusinessAcquisition
us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesDeferredRevenue
us-gaap:BusinessAcquisition
us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibleAssetsOtherThanGoodwill
us-gaap:BusinessAcquisition
us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilities
us-gaap:BusinessAcquisition
us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet
us-gaap:BusinessAcquisition
us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedNet
us-gaap:BalanceSheetLocation, us-gaap:CapitalizedContractCost
us-gaap:CapitalizedContractCostNet

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

us-gaap:CashCashEquivalentsAndShortTermInvestments
us-gaap:DebtInstrument
us-gaap:ConvertibleDebtFairValueDisclosures

us-gaap:ConvertibleDebtNoncurrent

us-gaap:CreditAndDebitCardReceivablesAtCarryingValue
us-gaap:CreditFacility, us-gaap:DebtInstrument, us-gaap:LongtermDebtType
us-gaap:DebtIssuanceCostsLineOfCreditArrangementsGross

us-gaap:DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss

us-gaap:DebtSecuritiesAvailableForSaleUnrealizedLossPositionNumberOfPositions

us-gaap:DeferredIncomeTaxLiabilities

us-gaap:DeferredTaxAssetsGross

us-gaap:DeferredTaxAssetsOperatingLossCarryforwards
us-gaap:IncomeTaxAuthority
us-gaap:DeferredTaxAssetsOperatingLossCarryforwardsNotSubjectToExpiration
us-gaap:IncomeTaxAuthority
us-gaap:DeferredTaxAssetsOperatingLossCarryforwardsSubjectToExpiration

us-gaap:DeferredTaxAssetsOther

us-gaap:DeferredTaxAssetsTaxCreditCarryforwardsResearch
us-gaap:IncomeTaxAuthority

us-gaap:DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost

us-gaap:DeferredTaxAssetsTaxDeferredExpenseReservesAndAccruals

us-gaap:DeferredTaxLiabilitiesOther

us-gaap:EmployeeRelatedLiabilitiesCurrent
us-gaap:AwardType, us-gaap:PlanName
us-gaap:EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized
us-gaap:PlanName

us-gaap:FinanceLeaseLiability

us-gaap:FinanceLeaseLiabilityCurrent

us-gaap:FinanceLeaseLiabilityNoncurrent

us-gaap:FinanceLeaseLiabilityPaymentsDue

us-gaap:FinanceLeaseLiabilityPaymentsDueNextTwelveMonths

us-gaap:FinanceLeaseLiabilityPaymentsDueYearFour

us-gaap:FinanceLeaseLiabilityPaymentsDueYearThree

us-gaap:FinanceLeaseLiabilityPaymentsDueYearTwo

us-gaap:FinanceLeaseLiabilityPaymentsRemainderOfFiscalYear

us-gaap:FinanceLeaseLiabilityUndiscountedExcessAmount

us-gaap:FinanceLeaseRightOfUseAssetAccumulatedAmortization

us-gaap:FinanceLeaseRightOfUseAssetBeforeAccumulatedAmortization

us-gaap:FinanceLeaseWeightedAverageDiscountRatePercent

us-gaap:FiniteLivedIntangibleAssetsAccumulatedAmortization

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseRemainderOfFiscalYear

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearFive

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearFour

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearThree

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo

us-gaap:IncentiveToLessee

us-gaap:IncomeTaxExaminationPenaltiesAndInterestAccrued

us-gaap:IntangibleAssetsGrossExcludingGoodwill
us-gaap:FiniteLivedIntangibleAssetsByMajorClass

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths

us-gaap:LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear

us-gaap:LessorOperatingLeasePaymentsToBeReceived

us-gaap:LessorOperatingLeasePaymentsToBeReceivedFiveYears

us-gaap:LessorOperatingLeasePaymentsToBeReceivedFourYears

us-gaap:LessorOperatingLeasePaymentsToBeReceivedNextTwelveMonths

us-gaap:LessorOperatingLeasePaymentsToBeReceivedRemainderOfFiscalYear

us-gaap:LessorOperatingLeasePaymentsToBeReceivedThereafter

us-gaap:LessorOperatingLeasePaymentsToBeReceivedThreeYears

us-gaap:LessorOperatingLeasePaymentsToBeReceivedTwoYears
us-gaap:CreditFacility, us-gaap:DebtInstrument, us-gaap:LongtermDebtType
us-gaap:LettersOfCreditOutstandingAmount
us-gaap:CreditFacility, us-gaap:DebtInstrument, us-gaap:LongtermDebtType
us-gaap:LineOfCreditFacilityRemainingBorrowingCapacity

us-gaap:NontradeReceivablesCurrent

us-gaap:OperatingLeaseWeightedAverageDiscountRatePercent
us-gaap:IncomeTaxAuthority
us-gaap:OperatingLossCarryforwards

us-gaap:OtherCommitment

us-gaap:OtherCommitmentDueAfterFifthYear

us-gaap:OtherCommitmentDueInNextTwelveMonths

us-gaap:OtherCommitmentDueInSecondYear

us-gaap:OtherCommitmentDueInThirdYear

us-gaap:RevenueRemainingPerformanceObligation
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue

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

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingAggregateIntrinsicValue

us-gaap:SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedNumberOfShares

us-gaap:SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedWeightedAverageGrantDateFairValue
us-gaap:IncomeTaxAuthority
us-gaap:TaxCreditCarryforwardAmount
us-gaap:TaxCreditCarryforward
us-gaap:DebtInstrument, us-gaap:LongtermDebtType
us-gaap:UnamortizedDebtIssuanceExpense
us-gaap:LongtermDebtType

us-gaap:UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate

Plots across concepts


IncomeStatement
Operating Income Loss
Expenses
Income Tax Expense Benefit
Balance Sheet
Stockholders Equity
Assets
Property Plant And Equipment Net
Current Assets
Accounts Receivable Net Current
NonCurrent Assets
Intangible Assets Net Excluding Goodwill
PropertyPlantAndEquipmentNet
Property Plant And Equipment Net
Liabilities
Operating Lease Liability
Current Liabilities
Accounts Payable Current
Stockholders Equity
Retained Earnings Accumulated Deficit
CashFlow
Net Cash Provided By Used In Financing Activities
NetCashProvidedByUsedInOperatingActivities
Increase Decrease In Accounts Payable
NetCashProvidedByUsedInInvestingActivities
Payments For Proceeds From Other Investing Activities
NetCashProvidedByUsedInFinancingActivities
Net Cash Provided By Used In Financing Activities
Shares
Weighted Average Number Of Shares Outstanding Basic
OperatingLeaseLiability
Operating Lease Liability Current
LesseeOperatingLeaseLiabilityPaymentsDue
Lessee Operating Lease Liability Payments Remainder Of Fiscal Year
FiniteLivedIntangibleAssets
Finite Lived Intangible Assets Net

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:SharesOutstanding us-gaap:StatementEquityComponents us-gaap:CommonStock▇▇███████████▇▁386.5389.8405.7414.3413.8415.1417.0415.3413.4411.4409.6406.2402.3395.0196.8NANANA
 us-gaap:CommonStockSharesIssued us-gaap:StatementClassOfStock us-gaap:CommonClassA█████▇▇▆▆▆▆▄▃▂▁303.4306.6322.3316.6316.1264.0255.8253.9251.6224.1211.0165.4101.054.08.9NANANA
 us-gaap:CommonStockSharesIssued us-gaap:StatementClassOfStock us-gaap:CommonClassB▁▁▁▁▁▃▃▃▃▄▄▅▇█▄83.283.283.597.797.9151.3161.2161.4161.8187.3198.6240.8301.3341.0187.9NANANA
 us-gaap:CommonStockSharesOutstanding us-gaap:StatementClassOfStock us-gaap:CommonClassA█████▇▇▆▆▆▆▄▃▂▁303.4306.6322.3316.6316.1264.0255.8253.9251.6224.1211.0165.4101.054.08.9NANANA
 us-gaap:CommonStockSharesOutstanding us-gaap:StatementClassOfStock us-gaap:CommonClassB▁▁▁▁▁▃▃▃▃▄▄▅▇█▄83.283.283.597.797.9151.3161.2161.4161.8187.3198.6240.8301.3341.0187.9NANANA
us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding ▁█397.0405.4NA419.9420.5419.3NA414.4412.4410.5NANANANANANANANA
us-gaap:WeightedAverageNumberOfSharesOutstandingBasic ▁█388.4398.1NA414.2414.1417.3NA414.4412.4410.5NANANANANANANANA
us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount █▁86.240.9NA21.020.530.9NA46.748.141.1NA47.751.675.9NA206.2206.4202.2
us-gaap:EarningsPerShareBasic █▁0.230.12NA0.080.040.09NA-0.04-0.05-0.02NANANANANANANANA
 us-gaap:EarningsPerShareBasic us-gaap:StatementClassOfStock us-gaap:CommonClassA█▁0.230.12NA0.080.040.09NA-0.04-0.05-0.02NANANANANANANANA
 us-gaap:EarningsPerShareBasic us-gaap:StatementClassOfStock us-gaap:CommonClassB█▁0.230.12NA0.080.040.09NA-0.04-0.05-0.02NANANANANANANANA
us-gaap:EarningsPerShareDiluted █▁0.220.12NA0.080.040.09NA-0.04-0.05-0.02NANANANANANANANA
 us-gaap:EarningsPerShareDiluted us-gaap:StatementClassOfStock us-gaap:CommonClassA█▁0.220.12NA0.080.040.09NA-0.04-0.05-0.02NANANANANANANANA
 us-gaap:EarningsPerShareDiluted us-gaap:StatementClassOfStock us-gaap:CommonClassB█▁0.220.12NA0.080.040.09NA-0.04-0.05-0.02NANANANANANANANA
  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
 TTM Greenblatt ROC _ _█▇▃▇▇▇▇▇▆▇▇▇▇▁▆84.442.5-346.630.012.826.8-6.6-18.6-34.0-21.3-12.0-8.9-7.2-465.9-37.3NANANA
  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 us-gaap:AwardType,us-gaap:PlanName us-gaap:RestrictedStock,dbx:CoFounderGrants▁▁▂▄▃▃▆▆▆▆▆▆▆█3.63.65.06.26.16.18.88.88.78.68.98.88.710.6NANANANA
 us-gaap:AllocatedShareBasedCompensationExpense us-gaap:IncomeStatementLocation us-gaap:CostOfSales▂▂▁▁▁▁▁▁▁▁▁▁▁█▁▁▁▁5.95.44.54.64.53.54.04.14.73.03.13.22.937.82.92.93.33.1
 us-gaap:AllocatedShareBasedCompensationExpense us-gaap:IncomeStatementLocation us-gaap:GeneralAndAdministrativeExpense▂▂▂▃▃▁▃▃▃▃▃▃▃█▂▂▂▂12.312.113.315.315.6-7.617.017.516.915.015.315.516.493.47.06.46.06.2
 us-gaap:AllocatedShareBasedCompensationExpense us-gaap:IncomeStatementLocation us-gaap:ResearchAndDevelopmentExpense▂▂▂▂▂▁▂▁▁▁▁▁▁█▁▁▁▁49.543.543.046.947.037.240.538.937.730.529.228.227.9282.926.722.921.721.8
 us-gaap:AllocatedShareBasedCompensationExpense us-gaap:IncomeStatementLocation us-gaap:SellingAndMarketingExpense▁▁▁▁▁▁▁▁▁▁▁▁▁█▂▁▁▁6.26.98.68.99.56.77.87.78.87.15.98.17.972.410.87.57.77.7
us-gaap:ComprehensiveIncomeNetOfTax █▇▃▇▇▇▇▇▇▇▇▇▇▁▆▇▇▆89.241.3-341.732.126.434.5-5.4-16.8-21.3-4.7-12.6-5.9-7.8-464.1-37.8-12.4-25.7-30.6
us-gaap:CostOfGoodsAndServicesSold ▅▅▅▄▄▄▄▄▄▃▂▁▁█▁▁▂▂107.1109.3105.8103.2102.5103.1104.9104.8102.998.494.490.289.5120.691.791.592.293.5
us-gaap:CostOfRevenue ▅▅▅▄▄▄▄▄▄▃▂▁▁█▁▁▂▂107.1109.3105.8103.2102.5103.1104.9104.8102.998.494.490.289.5120.691.791.592.293.5
us-gaap:GeneralAndAdministrativeExpense ▃▃▃▃▃▂▃▃▃▃▃▂▂█▂▂▂▁52.858.660.265.163.539.064.561.062.957.056.550.849.8126.144.239.642.231.3
us-gaap:GrossProfit █▇▇▇▆▆▆▅▅▄▄▄▃▂▃▂▂▁423.5402.3398.3384.2364.9351.9341.1323.4298.6287.2281.5270.1249.7195.7213.8195.2174.5154.4
us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest █▇▂▇▇▇▇▇▇▇▇▇▇▁▆▇▇▆91.046.4-345.533.621.939.8-2.4-15.4-20.8-13.4-7.4-6.0-3.0-463.7-38.7-13.6-26.4-32.8
us-gaap:IncomeTaxExpenseBenefit ▇▄▅▆█▅█▆▅▁▆▅▆▆▄▅▅▅3.0-1.20.30.94.40.54.21.60.6-5.72.1-0.21.11.8-1.00.50.40.3
 us-gaap:InterestExpenseDebt us-gaap:DebtInstrument dbx:A2026ConvertibleNotes0.6NANANANANANANANANANANANANANANANANA
 us-gaap:InterestExpenseDebt us-gaap:DebtInstrument dbx:A2028ConvertibleNotes0.3NANANANANANANANANANANANANANANANANA
 us-gaap:InterestExpenseDebt us-gaap:DebtInstrument,us-gaap:LongtermDebtType dbx:A2026ConvertibleNotes,us-gaap:ConvertibleDebtNA0.2NANANANANANANANANANANANANANANANA
 us-gaap:InterestExpenseDebt us-gaap:DebtInstrument,us-gaap:LongtermDebtType dbx:A2028ConvertibleNotes,us-gaap:ConvertibleDebtNA0.2NANANANANANANANANANANANANANANANA
us-gaap:InterestIncomeExpenseNonoperatingNet ▄▄▄▅▅▇▇▇▇██▇▆▄▃▃▂▁-0.9-1.2-0.90.10.12.42.63.03.23.73.92.42.0-1.2-1.6-2.2-3.0-4.2
us-gaap:NetIncomeLoss █▇▃▇▇▇▇▇▇▇▇▇▇▁▆▇▇▆88.047.6-345.832.717.539.3-6.6-17.0-21.4-7.7-9.5-5.8-4.1-465.5-37.7-14.1-26.8-33.1
 us-gaap:NetIncomeLossAvailableToCommonStockholdersDiluted us-gaap:StatementClassOfStock us-gaap:CommonClassA█▁87.947.7NA32.717.539.3NA-10.4-12.0NANANANANANANANANA
 us-gaap:NetIncomeLossAvailableToCommonStockholdersDiluted us-gaap:StatementClassOfStock us-gaap:CommonClassB█▁18.49.8NA7.65.514.8NA-6.6-9.4NANANANANANANANANA
us-gaap:OperatingExpenses ▃▃█▃▃▃▃▃▃▃▂▂▂▇▂▁▁▁339.1359.8744.8999999999999354.2352.1325.1347.7342.0332.6308.5293.5279.0256.9661.6251.1211.5201.2187.8
us-gaap:OperatingIncomeLoss █▇▃▇▇▇▇▇▆▇▇▇▇▁▆▇▇▇84.442.5-346.630.012.826.8-6.6-18.6-34.0-21.3-12.0-8.9-7.2-465.9-37.3-16.3-26.7-33.4
us-gaap:OtherNonoperatingIncomeExpense ▆▄▂▃▇█▂▁█▄▁▁▂▃▁▄▃▄7.55.12.03.59.010.61.60.210.04.20.70.52.23.40.24.93.34.8
us-gaap:ResearchAndDevelopmentExpense ▃▃▃▃▃▃▃▃▃▂▂▂▂█▁▁▁▁185.5181.2176.6183.3185.8181.8176.9172.8162.4150.0136.8133.2119.7378.5104.097.289.889.3
us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax ██▇▇▆▆▆▅▅▄▄▄▃▃▂▂▁▁530.6511.6504.1487.4467.4455.0446.0428.2401.5385.6375.9360.3339.2316.3305.5286.7266.7247.9
us-gaap:Revenues ██▇▇▆▆▆▅▅▄▄▄▃▃▂▂▁▁530.6511.6504.1487.4467.4455.0446.0428.2401.5385.6375.9360.3339.2316.3305.5286.7266.7247.9
us-gaap:SellingAndMarketingExpense ▄▄▄▄▄▄▄▄▄▄▄▃▃█▄▂▁▁100.8102.7109.9105.8102.8104.3106.3108.2107.3101.5100.295.087.4157.0102.974.769.267.2
  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 ██▅▇▆▆▆▅▅▄▃▃▃▂▁3328.13307.32387.22862.32742.32717.32699.22486.62364.92128.61694.11623.11602.41438.71019.9NANANA
us-gaap:Liabilities ██▄▄▄▄▄▃▃▂▁▁▁▁▁3422.93390.32053.42011.01938.91916.91890.81724.01634.71423.71017.3979.7971.5928.5917.0NANANA
us-gaap:LiabilitiesAndStockholdersEquity ██▅▇▆▆▆▅▅▄▃▃▃▂▁3328.13307.32387.22862.32742.32717.32699.22486.62364.92128.61694.11623.11602.41438.71019.9NANANA
us-gaap:StockholdersEquity ▁▁▄████▇▇▇▇▆▆▅▂-94.8-83.0333.8851.3803.4800.4808.4762.6730.2704.9676.8643.4630.9510.2102.9NANANA
 us-gaap:StockholdersEquity us-gaap:StatementEquityComponents us-gaap:AccumulatedOtherComprehensiveIncome▅▄█▆▆▁▄▃▃▃▁▃▃▅▄5.84.610.96.87.4-1.53.32.11.91.8-1.21.91.95.64.2NANANA
 us-gaap:StockholdersEquity us-gaap:StatementEquityComponents us-gaap:AdditionalPaidInCapital▇▇██████▇▇▇▇▇▆▁2446.92420.22564.32608.82560.42528.52531.32478.62428.42377.82337.52285.02248.42104.9533.1NANANA
 us-gaap:StockholdersEquity us-gaap:StatementEquityComponents us-gaap:RetainedEarnings▁▁▂▅▅▅▅▅▅▅▅▅▅▅█-2547.5-2507.8-2241.4-1764.3-1764.4-1726.6-1726.2-1718.1-1700.1-1674.7-1659.5-1643.4-1619.4-1600.4-1049.7NANANA
  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 ██▄▅▄▄▄▄▃▃▄▄▄▃▁2067.32034.01227.51330.21222.31195.21243.21133.61067.71007.61210.21163.71099.8929.9518.1NANANA
us-gaap:CashAndCashEquivalentsAtCarryingValue ██▁▃▁▃▄▃▁▂▄▄▃▅▂▂▂▁885.3845.5314.9452.7334.2486.4551.3443.2343.6359.2519.3536.2504.1665.3430.0422.7395.7351.2
us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents ██▁▃▁▃▄▃▁▂▄▄▃▅▂885.3845.5314.9452.7334.1486.4551.3443.2343.6359.2519.3536.2504.1665.3430.0NANANA
us-gaap:AccountsReceivableNetCurrent ██▆▇▆▄▄▄▄▃▂▂▂▁▂52.250.543.449.645.636.936.738.437.634.128.628.631.226.229.3NANANA
us-gaap:PrepaidExpenseAndOtherAssetsCurrent ▄▄▃▂▃▂▁▃▂▃▇█▇▂▃70.967.162.854.159.157.547.564.357.358.392.396.086.857.758.8NANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
us-gaap:PropertyPlantAndEquipmentGross ▂▁▂▇█▇▆▆▅▄▃▄▄▃▃793.7754.8790.51072.01131.81092.31032.5999.8977.2922.0874.5892.7906.2883.8846.7NANANA
us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment ▂▁▂▆█▇▆▆▇▆▅▆▆▄▃450.8424.0451.8583.6656.2619.1587.2583.2607.9581.1563.9596.8575.4538.2504.8NANANA
us-gaap:AmortizationOfIntangibleAssets █▅▆▇▆▆▆▇▇▅▁▁▃▂4.13.13.53.63.53.53.53.63.72.81.41.52.01.8NANANANA
us-gaap:PropertyPlantAndEquipmentNet ▃▂▃██▇▆▅▄▃▂▁▂▃▃342.9330.8338.7488.4475.6473.2445.3416.6369.3340.9310.6295.9330.8345.6341.9NANANA
us-gaap:Goodwill ██▅▅▅▅▅▅▅▅▁▁▁▁▁346.8346.0236.9234.3234.7233.3234.5231.8230.9230.496.598.097.899.098.9NANANA
us-gaap:IntangibleAssetsNetExcludingGoodwill ▇▇▄▅▅▆▆▇▇█▁▁▁▂▁48.953.033.537.040.544.447.450.153.757.414.715.216.317.917.0NANANA
us-gaap:FiniteLivedIntangibleAssetsNet ▇█▁▂48.953.033.537.0NANANANANANANANANANANANANANA
us-gaap:DeferredTaxAssetsLiabilitiesNet NANA4.0NANANA1.3NANANA1.0NANANA0.8NANANA
us-gaap:OperatingLeaseRightOfUseAsset ▁▂▂███▇▅▅▁437.6455.9470.5705.9701.6708.1657.9581.7575.7430.4NANANANANANANANA
us-gaap:OtherAssetsNoncurrent ██▇▅▅▄▅▆▅▄▄▂▃▁▁84.687.680.166.567.663.170.972.867.661.962.150.357.746.344.0NANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
us-gaap:AccountsPayableCurrent ▅▄▁▄▃▇█▅▅▄▆▄▃▄▅31.627.718.729.526.338.840.731.331.827.433.327.924.029.431.9NANANA
us-gaap:ContractWithCustomerLiabilityCurrent ██▇▆▆▆▅▅▄▄▃▃▂▂▁657.5641.0610.5598.6583.5576.8554.2541.1517.3508.4485.0479.3464.8444.6417.9NANANA
us-gaap:LiabilitiesCurrent █▇▇▆▅▅▆▅▄▃▃▂▂▁▁1125.01074.91087.81026.9981.8970.81014.8948.3903.1865.8837.5815.1793.3746.1738.4NANANA
us-gaap:OperatingLeaseLiabilityCurrent ▆▇▇█▃▄▁86.987.788.789.782.684.379.9NANANANANANANANANANANA
  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:LongTermDebt us-gaap:DebtInstrument,us-gaap:LongtermDebtType dbx:A2026ConvertibleNotes,us-gaap:ConvertibleDebt█▁685.5685.0NANANANANANANANANANANANANANANANA
 us-gaap:LongTermDebt us-gaap:DebtInstrument,us-gaap:LongtermDebtType dbx:A2028ConvertibleNotes,us-gaap:ConvertibleDebt█▁682.9682.5NANANANANANANANANANANANANANANANA
 us-gaap:LongTermDebt us-gaap:LongtermDebtType us-gaap:ConvertibleDebt█▁1368.41367.5NANANANANANANANANANANANANANANANA
us-gaap:OtherLiabilitiesNoncurrent ▇█▇█▇▅▅▄▁▁▁▁▆██32.138.034.437.433.726.625.921.510.69.78.98.831.536.337.2NANANA
us-gaap:OperatingLeaseLiabilityNoncurrent ▂▅▆█▇▇▁723.4744.6759.6777.3771.3771.6711.9NANANANANANANANANANANA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearTwo ▁▁██102.7102.7117.0117.9NANANANANANANANANANANANANANA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearThree ▁▁██92.092.0101.1101.4NANANANANANANANANANANANANANA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFour ▁▁██86.986.990.590.5NANANANANANANANANANANANANANA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFive NANA85.3NANANANANANANANANANANANANANANA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive NANA564.7NANANANANANANANANANANANANANANA
  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 ▁▁▄████▇▇▇▇▆▆▅▂-94.8-83.0333.8851.3803.4800.4808.4762.6730.2704.9676.8643.4630.9510.2102.9NANANA
 us-gaap:StockholdersEquity us-gaap:StatementEquityComponents us-gaap:AccumulatedOtherComprehensiveIncome▅▄█▆▆▁▄▃▃▃▁▃▃▅▄5.84.610.96.87.4-1.53.32.11.91.8-1.21.91.95.64.2NANANA
 us-gaap:StockholdersEquity us-gaap:StatementEquityComponents us-gaap:AdditionalPaidInCapital▇▇██████▇▇▇▇▇▆▁2446.92420.22564.32608.82560.42528.52531.32478.62428.42377.82337.52285.02248.42104.9533.1NANANA
 us-gaap:StockholdersEquity us-gaap:StatementEquityComponents us-gaap:RetainedEarnings▁▁▂▅▅▅▅▅▅▅▅▅▅▅█-2547.5-2507.8-2241.4-1764.3-1764.4-1726.6-1726.2-1718.1-1700.1-1674.7-1659.5-1643.4-1619.4-1600.4-1049.7NANANA
us-gaap:AdditionalPaidInCapital ▇▇██████▇▇▇▇▇▆▁2446.92420.22564.32608.82560.42528.52531.32478.62428.42377.82337.52285.02248.42104.9533.1NANANA
us-gaap:RetainedEarningsAccumulatedDeficit ▁▁▂▅▅▅▅▅▅▅▅▅▅▅█-2547.5-2507.8-2241.4-1764.3-1764.4-1726.6-1726.2-1718.1-1700.1-1674.7-1659.5-1643.5-1619.4-1600.4-1049.7NANANA
us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax ▅▄█▆▆▁▄▃▃▃▁▃▃▅▄5.84.610.96.87.4-1.53.32.11.91.8-1.21.91.95.74.2NANANA
us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue ▂▁▁▂▂▁▁▁▁▁▁▁▁█73.967.969.475.776.639.869.368.268.155.654.653.955.1486.5NANANANA
  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 █▄▆▇▅▁▇▅▄▁▄▄▃▁▂▃▂▁219.9115.7170.7200.9145.953.3186.8149.7128.863.2123.7128.0111.961.871.1111.586.161.6
us-gaap:NetCashProvidedByUsedInInvestingActivities █▁▇█▅▇▇█▆▅▆▇▃▄▇███21.6-398.8-42.0-2.0-177.9-11.7-41.2-8.3-97.2-173.3-104.8-31.4-304.5-193.1-13.0-3.2-3.6-4.1
us-gaap:NetCashProvidedByUsedInFinancingActivities ▁█▁▂▂▂▂▂▂▂▃▂▃▅▂▂▂▂-202.2814.6-269.8-81.7-121.9-104.3-39.4-39.9-46.4-51.0-34.2-64.434.4365.0-50.6-82.7-38.6-59.8
us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect ▃█▁▄▁▂▄▄▂▁▂▃▁▅39.8530.6-137.8118.6-152.3-64.9108.199.6-15.6-160.1-16.932.1-161.2235.3NANANANA
  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:AmortizationOfFinancingCosts █▁1.00.7NANA0.20.1NANANANANANANANANANANANA
us-gaap:IncreaseDecreaseInAccountsPayable ▄▆▁▅▃▂▆▄▅▂▄▅▂▃█▃▄▄2.110.1-11.03.9-5.0-7.88.8-0.63.4-5.22.24.6-5.7-2.816.3-2.71.80.8
us-gaap:NetCashProvidedByUsedInOperatingActivities █▄▆▇▅▁▇▅▄▁▄▄▃▁▂▃▂▁219.9115.7170.7200.9145.953.3186.8149.7128.863.2123.7128.0111.961.871.1111.586.161.6
us-gaap:NetIncomeLoss █▇▃▇▇▇▇▇▇▇▇▇▇▁▆▇▇▆88.047.6-345.832.717.539.3-6.6-17.0-21.4-7.7-9.5-5.8-4.1-465.5-37.7-14.1-26.8-33.1
us-gaap:ShareBasedCompensation ▂▁▁▂▂▁▁▁▁▁▁▁▁█▁▁▁▁73.967.969.475.776.639.869.368.268.155.653.555.055.1486.547.439.738.738.8
  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 █▁▇█▅▇▇█▆▅▆▇▃▄▇███21.6-398.8-42.0-2.0-177.9-11.7-41.2-8.3-97.2-173.3-104.8-31.4-304.5-193.1-13.0-3.2-3.6-4.1
us-gaap:PaymentsToAcquirePropertyPlantAndEquipment ▁▂▂▃▅▅▅█▆▅▆▂▂▂▃▁▁▁3.96.912.313.926.127.825.547.233.729.735.48.09.79.913.33.23.75.1
  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 ▁█▁▂▂▂▂▂▂▂▃▂▃▅▂▂▂▂-202.2814.6-269.8-81.7-121.9-104.3-39.4-39.9-46.4-51.0-34.2-64.434.4365.0-50.6-82.7-38.6-59.8
us-gaap:PaymentsForRepurchaseOfCommonStock ▃█▄▁▂▁150.8431.9220.237.575.864.0NANA0.00.0NANANANANANANANA
  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

Shares Outstanding

us-gaap:SharesOutstanding us-gaap:StatementEquityComponents

us-gaap:SharesOutstanding

us-gaap:CommonStock


Shares
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-312015-12-31
Value386389405414413415417415413411409406402395196187187
Percentage of SharesOutstanding100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Common Stock Shares Issued

us-gaap:CommonStockSharesIssued us-gaap:StatementClassOfStock

us-gaap:CommonStockSharesIssued

us-gaap:CommonClassA


Common
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value303306322316316264255253251224211165101548.9
Percentage of CommonStockSharesIssued100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:CommonClassB


Common
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value8383839797151161161161187198240301341187
Percentage of CommonStockSharesIssued27.427.125.930.931.057.363.063.664.383.694.1145.6298.3631.52111.2

Common Stock Shares Outstanding

us-gaap:CommonStockSharesOutstanding us-gaap:StatementClassOfStock

us-gaap:CommonStockSharesOutstanding

us-gaap:CommonClassA


Common
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value303306322316316264255253251224211165101548.9
Percentage of CommonStockSharesOutstanding100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:CommonClassB


Common
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value8383839797151161161161187198240301341187
Percentage of CommonStockSharesOutstanding27.427.125.930.931.057.363.063.664.383.694.1145.6298.3631.52111.2

Weighted Average Number Of Diluted Shares Outstanding

us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding

us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding


Weighted
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-31
Value397405419420419414412410
Percentage of WeightedAverageNumberOfDilutedSharesOutstanding100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding us-gaap:StatementClassOfStock

us-gaap:CommonClassA


Weighted
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-31
Value397405419420418252231215
Percentage of WeightedAverageNumberOfDilutedSharesOutstanding100.0100.0100.099.999.961.056.052.4

us-gaap:CommonClassB


Weighted
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-31
Value838398133157161181195
Percentage of WeightedAverageNumberOfDilutedSharesOutstanding21.020.623.331.637.639.044.047.6

Weighted Average Number Of Shares Outstanding Basic

us-gaap:WeightedAverageNumberOfSharesOutstandingBasic

us-gaap:WeightedAverageNumberOfSharesOutstandingBasic


Weighted
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-31
Value388398414414417414412410
Percentage of WeightedAverageNumberOfSharesOutstandingBasic100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:WeightedAverageNumberOfSharesOutstandingBasic us-gaap:StatementClassOfStock

us-gaap:CommonClassA


Weighted
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-31
Value305314316281260252231215
Percentage of WeightedAverageNumberOfSharesOutstandingBasic78.679.176.468.062.361.056.052.4

us-gaap:CommonClassB


Weighted
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-31
Value838397132157161181195
Percentage of WeightedAverageNumberOfSharesOutstandingBasic21.420.923.632.037.739.044.047.6

Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount

us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount

us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount


Antidilutive
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-31
Value8640212030464841475175206206202
Percentage of AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecurities

dbx:CoFounderGrants


Antidilutive
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-31
Value10101010141414141414140.00.00.0
Percentage of AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount11.925.249.050.246.031.530.635.830.828.519.40.00.00.0

us-gaap:ConvertibleNotesPayable


Antidilutive
Period End2021-06-302021-03-31
Value3714
Percentage of AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount43.934.2

us-gaap:EmployeeStockOption


Antidilutive
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-31
Value0.10.50.80.81.31.92.11.84.34.84.95.05.15.2
Percentage of AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount0.11.23.83.94.24.14.44.49.09.36.52.42.52.6

us-gaap:RestrictedStockUnitsRSU


Antidilutive
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-31
Value0.22.19.99.415303124283256535349
Percentage of AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount0.25.147.145.949.264.565.159.960.262.274.225.925.924.2

us-gaap:Warrant


Antidilutive
Period End2021-06-302021-03-31
Value3714
Percentage of AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount43.934.2

Earnings Per Share Basic

us-gaap:EarningsPerShareBasic

us-gaap:EarningsPerShareBasic


Earnings
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-31
Value0.230.120.080.040.09-0.04-0.05-0.02
Percentage of EarningsPerShareBasic100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:EarningsPerShareBasic us-gaap:StatementClassOfStock

us-gaap:CommonClassA


Earnings
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-31
Value0.230.120.080.040.09-0.04-0.05-0.02
Percentage of EarningsPerShareBasic100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:CommonClassB


Earnings
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-31
Value0.230.120.080.040.09-0.04-0.05-0.02
Percentage of EarningsPerShareBasic100.0100.0100.0100.0100.0100.0100.0100.0

Earnings Per Share Diluted

us-gaap:EarningsPerShareDiluted

us-gaap:EarningsPerShareDiluted


Earnings
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-31
Value0.220.120.080.040.09-0.04-0.05-0.02
Percentage of EarningsPerShareDiluted100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:EarningsPerShareDiluted us-gaap:StatementClassOfStock

us-gaap:CommonClassA


Earnings
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-31
Value0.220.120.080.040.09-0.04-0.05-0.02
Percentage of EarningsPerShareDiluted100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:CommonClassB


Earnings
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-31
Value0.220.120.080.040.09-0.04-0.05-0.02
Percentage of EarningsPerShareDiluted100.0100.0100.0100.0100.0100.0100.0100.0

Allocated Share Based Compensation Expense

us-gaap:AllocatedShareBasedCompensationExpense us-gaap:AwardType, us-gaap:PlanName

us-gaap:AllocatedShareBasedCompensationExpense

us-gaap:RestrictedStock, dbx:CoFounderGrants


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
Value3.63.65.06.26.16.18.88.88.78.68.98.88.710
Percentage of AllocatedShareBasedCompensationExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.70.70.01.31.31.30.02.12.22.20.02.42.63.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:RestrictedStock dbx:CoFounderGrants0.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AllocatedShareBasedCompensationExpense us-gaap:IncomeStatementLocation

us-gaap:CostOfSales


Allocated
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value5.95.44.54.64.53.54.04.14.73.03.13.22.9372.92.93.33.1
Percentage of AllocatedShareBasedCompensationExpense163.9150.090.074.273.857.445.546.654.034.934.836.433.3356.60.00.00.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.11.10.00.91.00.80.01.01.20.80.00.90.912.00.01.01.21.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:CostOfSales0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:GeneralAndAdministrativeExpense


Allocated
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value1212131515-7.617171615151516937.06.46.06.2
Percentage of AllocatedShareBasedCompensationExpense341.7336.1266.0246.8255.7-124.6193.2198.9194.3174.4171.9176.1188.5881.10.00.00.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax2.32.40.03.13.3-1.70.04.14.23.90.04.34.829.50.02.22.22.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:GeneralAndAdministrativeExpense0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:ResearchAndDevelopmentExpense


Allocated
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value4943434647374038373029282728226222121
Percentage of AllocatedShareBasedCompensationExpense1375.01208.3860.0756.5770.5609.8460.2442.0433.3354.7328.1320.5320.72668.90.00.00.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax9.38.50.09.610.18.20.09.19.47.90.07.88.289.40.08.08.18.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ResearchAndDevelopmentExpense0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:SellingAndMarketingExpense


Allocated
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value6.26.98.68.99.56.77.87.78.87.15.98.17.972107.57.77.7
Percentage of AllocatedShareBasedCompensationExpense172.2191.7172.0143.5155.7109.888.687.5101.182.666.392.090.8683.00.00.00.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.21.30.01.82.01.50.01.82.21.80.02.22.322.90.02.62.93.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:SellingAndMarketingExpense0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Comprehensive Income Net Of Tax

us-gaap:ComprehensiveIncomeNetOfTax

us-gaap:ComprehensiveIncomeNetOfTax


Comprehensive
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value8941-341.7322634-5.4-16.8-21.3-4.7-12.6-5.9-7.8-464.1-37.8-12.4-25.7-30.6
Percentage of ComprehensiveIncomeNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax16.88.10.06.65.67.60.0-3.9-5.3-1.20.0-1.6-2.3-146.70.0-4.3-9.6-12.3

Cost Of Goods And Services Sold

us-gaap:CostOfGoodsAndServicesSold

us-gaap:CostOfGoodsAndServicesSold


Cost
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value1071091051031021031041041029894908912091919293
Percentage of CostOfGoodsAndServicesSold100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax20.221.40.021.221.922.70.024.525.625.50.025.026.438.10.031.934.637.7

Cost Of Revenue

us-gaap:CostOfRevenue

us-gaap:CostOfRevenue


Cost
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value1071091051031021031041041029894908912091919293
Percentage of CostOfRevenue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax20.221.40.021.221.922.70.024.525.625.50.025.026.438.10.031.934.637.7

General And Administrative Expense

us-gaap:GeneralAndAdministrativeExpense

us-gaap:GeneralAndAdministrativeExpense


General
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value5258606563396461625756504912644394231
Percentage of GeneralAndAdministrativeExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax10.011.50.013.413.68.60.014.215.714.80.014.114.739.90.013.815.812.6

Gross Profit

us-gaap:GrossProfit

us-gaap:GrossProfit


Gross
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value423402398384364351341323298287281270249195213195174154
Percentage of GrossProfit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax79.878.60.078.878.177.30.075.574.474.50.075.073.661.90.068.165.462.3

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

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value9146-345.5332139-2.4-15.4-20.8-13.4-7.4-6.0-3.0-463.7-38.7-13.6-26.4-32.8
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax17.29.10.06.94.78.70.0-3.6-5.2-3.50.0-1.7-0.9-146.60.0-4.7-9.9-13.2

Income Tax Expense Benefit

us-gaap:IncomeTaxExpenseBenefit

us-gaap:IncomeTaxExpenseBenefit


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value3000000.0-1200000.0300000.0900000.04400000.0500000.04200000.01600000.0600000.0-5700000.02100000.0-200000.01100000.01800000.0-1000000.0500000.0400000.0300000.0
Percentage of IncomeTaxExpenseBenefit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.6-0.20.00.20.90.10.00.40.1-1.50.0-0.10.30.60.00.20.10.1

Interest Expense Debt

us-gaap:InterestExpenseDebt us-gaap:DebtInstrument

us-gaap:InterestExpenseDebt

dbx:A2026ConvertibleNotes


Interest
Period End2021-06-30
Value600000.0
Percentage of InterestExpenseDebt100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax dbx:A2026ConvertibleNotes0.0

dbx:A2028ConvertibleNotes


Interest
Period End2021-06-30
Value300000.0
Percentage of InterestExpenseDebt50.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax dbx:A2028ConvertibleNotes0.0

us-gaap:InterestExpenseDebt us-gaap:DebtInstrument, us-gaap:LongtermDebtType

dbx:A2026ConvertibleNotes, us-gaap:ConvertibleDebt


Interest
Period End2021-03-31
Value200000.0
Percentage of InterestExpenseDebt0.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax dbx:A2026ConvertibleNotes us-gaap:ConvertibleDebt0.0

dbx:A2028ConvertibleNotes, us-gaap:ConvertibleDebt


Interest
Period End2021-03-31
Value200000.0
Percentage of InterestExpenseDebt0.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax dbx:A2028ConvertibleNotes us-gaap:ConvertibleDebt0.0

Interest Income Expense Nonoperating Net

us-gaap:InterestIncomeExpenseNonoperatingNet

us-gaap:InterestIncomeExpenseNonoperatingNet


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value-0.9-1.2-0.90.10.12.42.63.03.23.73.92.42.0-1.2-1.6-2.2-3.0-4.2
Percentage of InterestIncomeExpenseNonoperatingNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.2-0.20.00.00.00.50.00.70.81.00.00.70.6-0.40.0-0.8-1.1-1.7

Net Income Loss

us-gaap:NetIncomeLoss

us-gaap:NetIncomeLoss


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value8847-345.8321739-6.6-17.0-21.4-7.7-9.5-5.8-4.1-465.5-37.7-14.1-26.8-33.1
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax16.69.30.06.73.78.60.0-4.0-5.3-2.00.0-1.6-1.2-147.20.0-4.9-10.0-13.4

us-gaap:NetIncomeLoss us-gaap:StatementClassOfStock

us-gaap:CommonClassA


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value6937-244.2251124-4.2-10.4-12.0-4.0-33.2-1.9-0.8-30.8-1.3-0.5-0.8-0.9
Percentage of NetIncomeLoss78.579.270.676.568.062.363.661.256.151.9349.532.819.56.63.43.53.02.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax13.07.40.05.12.55.40.0-2.4-3.0-1.00.0-0.5-0.2-9.70.0-0.2-0.3-0.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:CommonClassA0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:CommonClassB


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value1810.0-101.67.75.614-2.4-6.6-9.4-3.723-3.9-3.3-434.7-36.4-13.6-26.0-32.2
Percentage of NetIncomeLoss21.421.029.423.532.037.736.438.843.948.1-249.567.280.593.496.696.597.097.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax3.52.00.01.61.23.30.0-1.5-2.3-1.00.0-1.1-1.0-137.40.0-4.7-9.7-13.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:CommonClassB0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:NetIncomeLoss us-gaap:StatementEquityComponents

us-gaap:RetainedEarnings


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302018-06-302018-03-31
Value8847-345.8321739-6.6-17.0-21.4-4.1-465.5
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax16.69.30.06.73.78.60.0-4.0-5.3-1.2-147.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.00.00.0

Net Income Loss Available To Common Stockholders Diluted

us-gaap:NetIncomeLossAvailableToCommonStockholdersDiluted us-gaap:StatementClassOfStock

us-gaap:NetIncomeLossAvailableToCommonStockholdersDiluted

us-gaap:CommonClassA


Net
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-30
Value8747321739-10.4-12.0
Percentage of NetIncomeLossAvailableToCommonStockholdersDiluted100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax16.69.36.73.78.6-2.4-3.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:CommonClassA0.00.00.00.00.00.00.0

us-gaap:CommonClassB


Net
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-30
Value189.87.65.514-6.6-9.4
Percentage of NetIncomeLossAvailableToCommonStockholdersDiluted20.920.523.231.437.763.578.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax3.51.91.61.23.3-1.5-2.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:CommonClassB0.00.00.00.00.00.00.0

Operating Expenses

us-gaap:OperatingExpenses

us-gaap:OperatingExpenses


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
Value339359744354352325347342332308293279256661251211201187
Percentage of OperatingExpenses100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax63.970.30.072.775.371.50.079.982.880.00.077.475.7209.20.073.875.475.8

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
Value8442-346.6301226-6.6-18.6-34.0-21.3-12.0-8.9-7.2-465.9-37.3-16.3-26.7-33.4
Percentage of OperatingIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax15.98.30.06.22.75.90.0-4.3-8.5-5.50.0-2.5-2.1-147.30.0-5.7-10.0-13.5

Other Nonoperating Income Expense

us-gaap:OtherNonoperatingIncomeExpense

us-gaap:OtherNonoperatingIncomeExpense


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value7.55.12.03.59.0101.60.210.04.20.70.52.23.40.24.93.34.8
Percentage of OtherNonoperatingIncomeExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.41.00.00.71.92.30.00.02.51.10.00.10.61.10.01.71.21.9

Research And Development Expense

us-gaap:ResearchAndDevelopmentExpense

us-gaap:ResearchAndDevelopmentExpense


Research
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value185181176183185181176172162150136133119378104978989
Percentage of ResearchAndDevelopmentExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax35.035.40.037.639.840.00.040.440.438.90.037.035.3119.70.033.933.736.0

Revenue From Contract With Customer Excluding Assessed Tax

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value530511504487467455446428401385375360339316305286266247
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:StatementGeographical

country:US


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value277266263255244235230220205197190182172161157146141129
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax52.352.252.352.452.351.851.751.651.251.150.550.750.851.151.751.053.252.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax52.352.252.352.452.351.851.751.651.251.150.550.750.851.151.751.053.252.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax country:US100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:NonUs


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value253244240231222219215207196188185177166154147140124118
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax47.747.847.747.647.748.248.348.448.848.949.549.349.248.948.349.046.847.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax47.747.847.747.647.748.248.348.448.848.949.549.349.248.948.349.046.847.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:NonUs100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Revenues

us-gaap:Revenues

us-gaap:Revenues


Revenues
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value530511504487467455446428401385375360339316305286266247
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

Selling And Marketing Expense

us-gaap:SellingAndMarketingExpense

us-gaap:SellingAndMarketingExpense


Selling
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value1001021091051021041061081071011009587157102746967
Percentage of SellingAndMarketingExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax19.020.121.821.722.022.923.825.326.726.326.726.425.849.633.726.125.927.1

Assets

us-gaap:Assets

us-gaap:Assets


Assets
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value332833072387286227422717269924862364212816941623160214381019
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Liabilities

us-gaap:Liabilities

us-gaap:Liabilities


Liabilities
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value34223390205320111938191618901724163414231017979971928917
Percentage of Liabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets102.8102.586.070.370.770.570.169.369.166.960.060.460.664.589.9

Liabilities And Stockholders Equity

us-gaap:LiabilitiesAndStockholdersEquity

us-gaap:LiabilitiesAndStockholdersEquity


Liabilities
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value332833072387286227422717269924862364212816941623160214381019
Percentage of LiabilitiesAndStockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

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
Value-94.8-83.0333851803800808762730704676643630510102122185
Percentage of StockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets-2.8-2.514.029.729.329.529.930.730.933.140.039.639.435.510.10.00.0

us-gaap:StockholdersEquity us-gaap:StatementEquityComponents

us-gaap:AccumulatedOtherComprehensiveIncome


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-312015-12-31
Value5.84.6106.87.4-1.53.32.11.91.8-1.21.91.95.64.2-1.00.3
Percentage of StockholdersEquity-6.1-5.53.30.80.9-0.20.40.30.30.3-0.20.30.31.14.1-0.80.2
Percentage of Assets0.20.10.50.20.3-0.10.10.10.10.1-0.10.10.10.40.40.00.0
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
Value24462420256426082560252825312478242823772337228522482104533446297
Percentage of StockholdersEquity-2581.1-2915.9768.2306.4318.7315.9313.1325.0332.6337.3345.4355.1356.4412.6518.1363.2160.2
Percentage of Assets73.573.2107.491.193.493.193.899.7102.7111.7138.0140.8140.3146.352.30.00.0
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: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
Value-2547.5-2507.8-2241.4-1764.3-1764.4-1726.6-1726.2-1718.1-1700.1-1674.7-1659.5-1643.4-1619.4-1600.4-1049.7-937.5-727.3
Percentage of StockholdersEquity2687.23021.4-671.5-207.2-219.6-215.7-213.5-225.3-232.8-237.6-245.2-255.4-256.7-313.7-1020.1-763.4-391.9
Percentage of Assets-76.5-75.8-93.9-61.6-64.3-63.5-64.0-69.1-71.9-78.7-98.0-101.3-101.1-111.2-102.90.00.0
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 End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value2067203412271330122211951243113310671007121011631099929518
Percentage of AssetsCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets62.161.551.446.544.644.046.145.645.147.371.471.768.664.650.8

Cash And Cash Equivalents At Carrying Value

us-gaap:CashAndCashEquivalentsAtCarryingValue

us-gaap:CashAndCashEquivalentsAtCarryingValue


Cash
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312015-12-31
Value885845314452334486551443343359519536504665430422395351352356
Percentage of CashAndCashEquivalentsAtCarryingValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets26.625.613.215.812.217.920.417.814.516.930.733.031.546.242.20.00.00.00.00.0

us-gaap:CashAndCashEquivalentsAtCarryingValue us-gaap:CashAndCashEquivalents

us-gaap:Cash


Cash
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value7065677188112105102110109103961107162
Percentage of CashAndCashEquivalentsAtCarryingValue8.07.721.315.826.523.019.023.032.130.619.818.022.010.714.6
Percentage of Assets2.12.02.82.53.24.13.94.14.75.26.15.96.94.96.2
Percentage of Assets us-gaap:Cash0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:CertificatesOfDeposit


Cash
Period End2021-06-302021-03-312020-09-302018-06-302018-03-31
Value3.610.01.03.50.5
Percentage of CashAndCashEquivalentsAtCarryingValue0.41.20.20.70.1
Percentage of Assets0.10.30.00.20.0
Percentage of Assets us-gaap:CertificatesOfDeposit0.00.00.00.00.0

us-gaap:CommercialPaper


Cash
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value21138.06.01.21.32.0211927244510
Percentage of CashAndCashEquivalentsAtCarryingValue2.41.52.51.30.40.30.46.25.45.34.69.01.6
Percentage of Assets0.60.40.30.20.00.00.10.90.91.61.52.80.8
Percentage of Assets us-gaap:CommercialPaper0.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:CorporateDebtSecurities


Cash
Period End2020-09-302020-06-302019-06-302019-03-312018-03-31
Value2.91.11.13.02.6
Percentage of CashAndCashEquivalentsAtCarryingValue0.60.30.30.80.4
Percentage of Assets0.10.00.00.10.2
Percentage of Assets us-gaap:CorporateDebtSecurities0.00.00.00.00.0

us-gaap:CorporateNoteSecurities


Cash
Period End2021-03-312020-12-31
Value4.05.0
Percentage of CashAndCashEquivalentsAtCarryingValue0.51.6
Percentage of Assets0.10.2
Percentage of Assets us-gaap:CorporateNoteSecurities0.00.0

us-gaap:MoneyMarketFunds


Cash
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value790753222371241373444333211226355415344506367
Percentage of CashAndCashEquivalentsAtCarryingValue89.289.170.782.072.376.780.675.261.463.268.577.568.376.185.4
Percentage of Assets23.722.89.313.08.813.716.513.48.910.721.025.621.535.236.0
Percentage of Assets us-gaap:MoneyMarketFunds0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:MunicipalBonds


Cash
Period End2020-12-312020-06-30
Value1.51.8
Percentage of CashAndCashEquivalentsAtCarryingValue0.50.5
Percentage of Assets0.10.1
Percentage of Assets us-gaap:MunicipalBonds0.00.0

us-gaap:USTreasurySecurities


Cash
Period End2020-12-312019-09-302018-12-312018-03-31
Value107.03362
Percentage of CashAndCashEquivalentsAtCarryingValue3.41.66.49.3
Percentage of Assets0.40.32.04.3
Percentage of Assets us-gaap:USTreasurySecurities0.00.00.00.0

Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents


Cash
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-31
Value885845314452334486551443343359519536504665430352
Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets26.625.613.215.812.217.920.417.814.516.930.733.031.546.242.20.0

Accounts Receivable Net Current

us-gaap:AccountsReceivableNetCurrent

us-gaap:AccountsReceivableNetCurrent


Accounts
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value525043494536363837342828312629
Percentage of AccountsReceivableNetCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets1.61.51.81.71.71.41.41.51.61.61.71.81.91.82.9

Prepaid Expense And Other Assets Current

us-gaap:PrepaidExpenseAndOtherAssetsCurrent

us-gaap:PrepaidExpenseAndOtherAssetsCurrent


Prepaid
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value706762545957476457589296865758
Percentage of PrepaidExpenseAndOtherAssetsCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets2.12.02.61.92.22.11.82.62.42.75.45.95.44.05.8

Property Plant And Equipment Gross

us-gaap:PropertyPlantAndEquipmentGross

us-gaap:PropertyPlantAndEquipmentGross


Property
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value7937547901072113110921032999977922874892906883846
Percentage of PropertyPlantAndEquipmentGross100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets23.822.833.137.541.340.238.340.241.343.351.655.056.661.483.0

us-gaap:PropertyPlantAndEquipmentGross us-gaap:PropertyPlantAndEquipmentByType

us-gaap:ComputerEquipment


Property
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value656621652737806779749741698682695741711692663
Percentage of PropertyPlantAndEquipmentGross82.782.482.668.871.271.372.674.271.574.179.583.178.578.378.3
Percentage of Assets19.718.827.325.829.428.727.829.829.532.141.045.744.448.165.0
Percentage of Assets us-gaap:ComputerEquipment0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:ConstructionInProgress


Property
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value21172152464136199960326.82.62.07.2
Percentage of PropertyPlantAndEquipmentGross2.82.32.74.94.13.83.52.010.26.63.80.80.30.20.9
Percentage of Assets0.70.50.91.81.71.51.30.84.22.81.90.40.20.10.7
Percentage of Assets us-gaap:ConstructionInProgress0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:FurnitureAndFixtures


Property
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value181819393940353424242323252321
Percentage of PropertyPlantAndEquipmentGross2.32.52.53.73.53.73.43.52.52.72.72.62.82.72.5
Percentage of Assets0.60.60.81.41.41.51.31.41.11.21.41.41.61.72.1
Percentage of Assets us-gaap:FurnitureAndFixtures0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:LeaseholdImprovements


Property
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value969796243240231211203154153122120130129118
Percentage of PropertyPlantAndEquipmentGross12.212.912.322.721.221.220.520.415.816.714.013.514.414.614.0
Percentage of Assets2.92.94.18.58.88.57.88.26.57.27.27.48.19.011.6
Percentage of Assets us-gaap:LeaseholdImprovements0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Accumulated Depreciation Depletion And Amortization Property Plant And Equipment

us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment

us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment


Accumulated
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value450424451583656619587583607581563596575538504
Percentage of AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets13.512.818.920.423.922.821.823.525.727.333.336.835.937.449.5

Amortization Of Intangible Assets

us-gaap:AmortizationOfIntangibleAssets

us-gaap:AmortizationOfIntangibleAssets


Amortization
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value4.13.13.53.63.53.53.53.63.72.81.41.52.01.8
Percentage of AmortizationOfIntangibleAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Property Plant And Equipment Net

us-gaap:PropertyPlantAndEquipmentNet

us-gaap:PropertyPlantAndEquipmentNet


Property
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value342330338488475473445416369340310295330345341
Percentage of PropertyPlantAndEquipmentNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets10.310.014.217.117.317.416.516.815.616.018.318.220.624.033.5

us-gaap:PropertyPlantAndEquipmentNet us-gaap:StatementGeographical

country:US


Property
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value339327334478464461431403354324293278311325323
Percentage of PropertyPlantAndEquipmentNet98.998.998.798.197.797.597.096.795.995.394.594.094.394.394.7
Percentage of Assets10.29.914.016.716.917.016.016.215.015.317.317.119.522.731.7
Percentage of Assets country:US0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:NonUs


Property
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value3.83.54.59.51011131315161717191918
Percentage of PropertyPlantAndEquipmentNet1.11.11.31.92.32.53.03.34.14.75.56.05.75.75.3
Percentage of Assets0.10.10.20.30.40.40.50.50.60.81.01.11.21.41.8
Percentage of Assets us-gaap:NonUs0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Goodwill

us-gaap:Goodwill

us-gaap:Goodwill


Goodwill
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-31
Value346346236234234233234231230230969897999896
Percentage of Goodwill100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets10.410.59.98.28.68.68.79.39.810.85.76.06.16.99.70.0

us-gaap:Goodwill us-gaap:BusinessAcquisition

dbx:DocSendInc


Goodwillus-gaap:
Period End2021-03-22
Value110
Percentage of Goodwill0.0
Percentage of Assets0.0
Percentage of Assets dbx:DocSendInc0.0

Intangible Assets Net Excluding Goodwill

us-gaap:IntangibleAssetsNetExcludingGoodwill

us-gaap:IntangibleAssetsNetExcludingGoodwill


Intangible
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value485333374044475053571415161717
Percentage of IntangibleAssetsNetExcludingGoodwill100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets1.51.61.41.31.51.61.82.02.32.70.90.91.01.21.7

Finite Lived Intangible Assets Net

us-gaap:FiniteLivedIntangibleAssetsNet

us-gaap:FiniteLivedIntangibleAssetsNet


Finite
Period End2021-06-302021-03-312020-12-312020-09-30
Value48533337
Percentage of FiniteLivedIntangibleAssetsNet100.0100.0100.0100.0
Percentage of Assets1.51.61.41.3

Deferred Tax Assets Liabilities Net

us-gaap:DeferredTaxAssetsLiabilitiesNet

us-gaap:DeferredTaxAssetsLiabilitiesNet


Deferred
Period End2020-12-312019-12-312018-12-312017-12-31
Value4000000.01300000.01000000.0800000.0
Percentage of DeferredTaxAssetsLiabilitiesNet100.0100.0100.0100.0
Percentage of Assets0.20.00.10.1

Operating Lease Right Of Use Asset

us-gaap:OperatingLeaseRightOfUseAsset

us-gaap:OperatingLeaseRightOfUseAsset


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value437455470705701708657581575430
Percentage of OperatingLeaseRightOfUseAsset100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets13.113.819.724.725.626.124.423.424.320.2

Other Assets Noncurrent

us-gaap:OtherAssetsNoncurrent

us-gaap:OtherAssetsNoncurrent


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value848780666763707267616250574644
Percentage of OtherAssetsNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets2.52.63.42.32.52.32.62.92.92.93.73.13.63.24.3

Accounts Payable Current

us-gaap:AccountsPayableCurrent

us-gaap:AccountsPayableCurrent


Accounts
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value312718292638403131273327242931
Percentage of AccountsPayableCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.90.80.81.01.01.41.51.31.31.32.01.71.52.03.1

Contract With Customer Liability Current

us-gaap:ContractWithCustomerLiabilityCurrent

us-gaap:ContractWithCustomerLiabilityCurrent


Contract
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value657641610598583576554541517508485479464444417
Percentage of ContractWithCustomerLiabilityCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets19.819.425.620.921.321.220.521.821.923.928.629.529.030.941.0

Liabilities Current

us-gaap:LiabilitiesCurrent

us-gaap:LiabilitiesCurrent


Liabilities
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value11251074108710269819701014948903865837815793746738
Percentage of LiabilitiesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets33.832.545.635.935.835.737.638.138.240.749.450.249.551.972.4

Operating Lease Liability Current

us-gaap:OperatingLeaseLiabilityCurrent

us-gaap:OperatingLeaseLiabilityCurrent


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-31
Value86878889828479
Percentage of OperatingLeaseLiabilityCurrent100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets2.62.73.73.13.03.13.0

Long Term Debt

us-gaap:LongTermDebt us-gaap:DebtInstrument, us-gaap:LongtermDebtType

us-gaap:LongTermDebt

dbx:A2026ConvertibleNotes, us-gaap:ConvertibleDebt


Long
Period End2021-06-302021-03-31
Value685685
Percentage of LongTermDebt100.0100.0
Percentage of Assets20.620.7
Percentage of Assets dbx:A2026ConvertibleNotes us-gaap:ConvertibleDebt0.00.0

dbx:A2028ConvertibleNotes, us-gaap:ConvertibleDebt


Long
Period End2021-06-302021-03-31
Value682682
Percentage of LongTermDebt99.699.6
Percentage of Assets20.520.6
Percentage of Assets dbx:A2028ConvertibleNotes us-gaap:ConvertibleDebt0.00.0

us-gaap:LongTermDebt us-gaap:LongtermDebtType

us-gaap:ConvertibleDebt


Long
Period End2021-06-302021-03-31
Value13681367
Percentage of LongTermDebt199.6199.6
Percentage of Assets41.141.3
Percentage of Assets us-gaap:ConvertibleDebt0.00.0

Other Liabilities Noncurrent

us-gaap:OtherLiabilitiesNoncurrent

us-gaap:OtherLiabilitiesNoncurrent


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value3238343733262521109.78.98.8313637
Percentage of OtherLiabilitiesNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets1.01.11.41.31.21.01.00.90.40.50.50.52.02.53.6

Operating Lease Liability Noncurrent

us-gaap:OperatingLeaseLiabilityNoncurrent

us-gaap:OperatingLeaseLiabilityNoncurrent


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-31
Value723744759777771771711
Percentage of OperatingLeaseLiabilityNoncurrent100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets21.722.531.827.228.128.426.4

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
Value102102117117
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearTwo100.0100.0100.0100.0
Percentage of Assets3.13.14.94.1

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
Value9292101101
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearThree100.0100.0100.0100.0
Percentage of Assets2.82.84.23.5

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
Value86869090
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearFour100.0100.0100.0100.0
Percentage of Assets2.62.63.83.2

Lessee Operating Lease Liability Payments Due Year Five

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFive

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFive


Lessee
Period End2020-12-31
Value85
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearFive100.0
Percentage of Assets3.6

Lessee Operating Lease Liability Payments Due After Year Five

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive


Lessee
Period End2020-12-31
Value564
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive100.0
Percentage of Assets23.7

Operating Lease Liability

us-gaap:OperatingLeaseLiability

us-gaap:OperatingLeaseLiability


Operating
Period End2021-06-302021-03-312020-12-312020-09-302019-12-312019-09-302019-06-302019-03-31
Value810832848867791702679515
Percentage of OperatingLeaseLiability100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets24.325.235.530.329.328.228.724.2

Lessee Operating Lease Liability Payments Due

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDue

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDue


Lessee
Period End2021-06-302021-03-312020-12-312020-09-30
Value1027105810811115
Percentage of LesseeOperatingLeaseLiabilityPaymentsDue100.0100.0100.0100.0
Percentage of Assets30.932.045.339.0

Lessee Operating Lease Liability Undiscounted Excess Amount

us-gaap:LesseeOperatingLeaseLiabilityUndiscountedExcessAmount

us-gaap:LesseeOperatingLeaseLiabilityUndiscountedExcessAmount


Lessee
Period End2021-06-302021-03-312020-12-312020-09-30
Value208217223236
Percentage of LesseeOperatingLeaseLiabilityUndiscountedExcessAmount100.0100.0100.0100.0
Percentage of Assets6.36.69.38.3

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
Value-94.8-83.0333851803800808762730704676643630510102122185
Percentage of StockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets-2.8-2.514.029.729.329.529.930.730.933.140.039.639.435.510.10.00.0

us-gaap:StockholdersEquity us-gaap:StatementEquityComponents

us-gaap:AccumulatedOtherComprehensiveIncome


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-312015-12-31
Value5.84.6106.87.4-1.53.32.11.91.8-1.21.91.95.64.2-1.00.3
Percentage of StockholdersEquity-6.1-5.53.30.80.9-0.20.40.30.30.3-0.20.30.31.14.1-0.80.2
Percentage of Assets0.20.10.50.20.3-0.10.10.10.10.1-0.10.10.10.40.40.00.0
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
Value24462420256426082560252825312478242823772337228522482104533446297
Percentage of StockholdersEquity-2581.1-2915.9768.2306.4318.7315.9313.1325.0332.6337.3345.4355.1356.4412.6518.1363.2160.2
Percentage of Assets73.573.2107.491.193.493.193.899.7102.7111.7138.0140.8140.3146.352.30.00.0
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: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
Value-2547.5-2507.8-2241.4-1764.3-1764.4-1726.6-1726.2-1718.1-1700.1-1674.7-1659.5-1643.4-1619.4-1600.4-1049.7-937.5-727.3
Percentage of StockholdersEquity2687.23021.4-671.5-207.2-219.6-215.7-213.5-225.3-232.8-237.6-245.2-255.4-256.7-313.7-1020.1-763.4-391.9
Percentage of Assets-76.5-75.8-93.9-61.6-64.3-63.5-64.0-69.1-71.9-78.7-98.0-101.3-101.1-111.2-102.90.00.0
Percentage of Assets us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Additional Paid In Capital

us-gaap:AdditionalPaidInCapital

us-gaap:AdditionalPaidInCapital


Additional
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value24462420256426082560252825312478242823772337228522482104533
Percentage of AdditionalPaidInCapital100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets73.573.2107.491.193.493.193.899.7102.7111.7138.0140.8140.3146.352.3

Retained Earnings Accumulated Deficit

us-gaap:RetainedEarningsAccumulatedDeficit

us-gaap:RetainedEarningsAccumulatedDeficit


Retained
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value-2547500000.0-2507800000.0-2241400000.0-1764300000.0-1764400000.0-1726600000.0-1726200000.0-1718100000.0-1700100000.0-1674700000.0-1659500000.0-1643500000.0-1619400000.0-1600400000.0-1049700000.0
Percentage of RetainedEarningsAccumulatedDeficit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets-76.5-75.8-93.9-61.6-64.3-63.5-64.0-69.1-71.9-78.7-98.0-101.3-101.1-111.2-102.9

Accumulated Other Comprehensive Income Loss Net Of Tax

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax


Accumulated
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value5.84.6106.87.4-1.53.32.11.91.8-1.21.91.95.74.2
Percentage of AccumulatedOtherComprehensiveIncomeLossNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.20.10.50.20.3-0.10.10.10.10.1-0.10.10.10.40.4

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
Value73676975763969686855545355486
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
Value73676975763969686855545355486
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 End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value219115170200145531861491286312312811161711118661
Percentage of NetCashProvidedByUsedInOperatingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax41.422.633.941.231.211.741.935.032.116.432.935.533.019.523.338.932.324.8

Net Cash Provided By Used In Investing Activities

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:NetCashProvidedByUsedInInvestingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value21-398.8-42.0-2.0-177.9-11.7-41.2-8.3-97.2-173.3-104.8-31.4-304.5-193.1-13.0-3.2-3.6-4.1
Percentage of NetCashProvidedByUsedInInvestingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax4.1-78.0-8.3-0.4-38.1-2.6-9.2-1.9-24.2-44.9-27.9-8.7-89.8-61.0-4.3-1.1-1.3-1.7

Net Cash Provided By Used In Financing Activities

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:NetCashProvidedByUsedInFinancingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value-202.2814-269.8-81.7-121.9-104.3-39.4-39.9-46.4-51.0-34.2-64.434365-50.6-82.7-38.6-59.8
Percentage of NetCashProvidedByUsedInFinancingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-38.1159.2-53.5-16.8-26.1-22.9-8.8-9.3-11.6-13.2-9.1-17.910.1115.4-16.6-28.8-14.5-24.1

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

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect


Cash
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value39530-137.8118-152.3-64.910899-15.6-160.1-16.932-161.2235
Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax7.5103.7-27.324.3-32.6-14.324.223.3-3.9-41.5-4.58.9-47.574.4

Amortization Of Financing Costs

us-gaap:AmortizationOfFinancingCosts

us-gaap:AmortizationOfFinancingCosts


Amortization
Period End2021-06-302021-03-312020-06-302020-03-31
Value1000000.0700000.0200000.0100000.0
Percentage of AmortizationOfFinancingCosts100.0100.0100.0100.0

Increase Decrease In Accounts Payable

us-gaap:IncreaseDecreaseInAccountsPayable

us-gaap:IncreaseDecreaseInAccountsPayable


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value2.110-11.03.9-5.0-7.88.8-0.63.4-5.22.24.6-5.7-2.816-2.71.80.8
Percentage of IncreaseDecreaseInAccountsPayable100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Net Cash Provided By Used In Operating Activities

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetCashProvidedByUsedInOperatingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value219115170200145531861491286312312811161711118661
Percentage of NetCashProvidedByUsedInOperatingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax41.422.633.941.231.211.741.935.032.116.432.935.533.019.523.338.932.324.8

Net Income Loss

us-gaap:NetIncomeLoss

us-gaap:NetIncomeLoss


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value8847-345.8321739-6.6-17.0-21.4-7.7-9.5-5.8-4.1-465.5-37.7-14.1-26.8-33.1
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax16.69.3-68.66.73.78.6-1.5-4.0-5.3-2.0-2.5-1.6-1.2-147.2-12.3-4.9-10.0-13.4

us-gaap:NetIncomeLoss us-gaap:StatementClassOfStock

us-gaap:CommonClassA


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value6937-244.2251124-4.2-10.4-12.0-4.0-33.2-1.9-0.8-30.8-1.3-0.5-0.8-0.9
Percentage of NetIncomeLoss78.579.270.676.568.062.363.661.256.151.9349.532.819.56.63.43.53.02.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax13.07.4-48.45.12.55.4-0.9-2.4-3.0-1.0-8.8-0.5-0.2-9.7-0.4-0.2-0.3-0.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:CommonClassA0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:CommonClassB


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value1810.0-101.67.75.614-2.4-6.6-9.4-3.723-3.9-3.3-434.7-36.4-13.6-26.0-32.2
Percentage of NetIncomeLoss21.421.029.423.532.037.736.438.843.948.1-249.567.280.593.496.696.597.097.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax3.52.0-20.21.61.23.3-0.5-1.5-2.3-1.06.3-1.1-1.0-137.4-11.9-4.7-9.7-13.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:CommonClassB0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:NetIncomeLoss us-gaap:StatementEquityComponents

us-gaap:RetainedEarnings


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302018-06-302018-03-31
Value8847-345.8321739-6.6-17.0-21.4-4.1-465.5
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax16.69.3-68.66.73.78.6-1.5-4.0-5.3-1.2-147.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.00.00.0

Share Based Compensation

us-gaap:ShareBasedCompensation

us-gaap:ShareBasedCompensation


Share
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value7367697576396968685553555548647393838
Percentage of ShareBasedCompensation100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Net Cash Provided By Used In Investing Activities

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:NetCashProvidedByUsedInInvestingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value21-398.8-42.0-2.0-177.9-11.7-41.2-8.3-97.2-173.3-104.8-31.4-304.5-193.1-13.0-3.2-3.6-4.1
Percentage of NetCashProvidedByUsedInInvestingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax4.1-78.0-8.3-0.4-38.1-2.6-9.2-1.9-24.2-44.9-27.9-8.7-89.8-61.0-4.3-1.1-1.3-1.7

Payments To Acquire Property Plant And Equipment

us-gaap:PaymentsToAcquirePropertyPlantAndEquipment

us-gaap:PaymentsToAcquirePropertyPlantAndEquipment


Payments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value3.96.91213262725473329358.09.79.9133.23.75.1
Percentage of PaymentsToAcquirePropertyPlantAndEquipment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Net Cash Provided By Used In Financing Activities

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:NetCashProvidedByUsedInFinancingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value-202.2814-269.8-81.7-121.9-104.3-39.4-39.9-46.4-51.0-34.2-64.434365-50.6-82.7-38.6-59.8
Percentage of NetCashProvidedByUsedInFinancingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-38.1159.2-53.5-16.8-26.1-22.9-8.8-9.3-11.6-13.2-9.1-17.910.1115.4-16.6-28.8-14.5-24.1

Payments For Repurchase Of Common Stock

us-gaap:PaymentsForRepurchaseOfCommonStock

us-gaap:PaymentsForRepurchaseOfCommonStock


Payments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-06-302019-03-31
Value1504312203775640.00.0
Percentage of PaymentsForRepurchaseOfCommonStock100.0100.0100.0100.0100.0100.00.00.0

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

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber


Share
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-312015-12-31
Value1.11.41.31.41.51.82.01.92.02.21.33.34.84.85.05.413
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber us-gaap:PlanName

dbx:A2008EquityIncentivePlan2017EquityIncentivePlanand2018Plan


Share
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value333741303231322526
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber2561.52685.72740.01688.91635.01647.41615.01154.52023.1

dbx:DropboxHelloSignAndDocSendEquityIncentivePlans


Share
Period End2021-06-302021-03-31
Value3128
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber2881.82014.3

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

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice


Share
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-312015-12-31
Value11.3911.5213.7313.5513.3712.3612.2812.2612.4112.4514.6812.5910.6210.6210.5210.6817.51
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

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

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod

us-gaap:RestrictedStock


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
Value9.72.92.41.7163.95.93.7112.32.91.70.611
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod us-gaap:TitleOfIndividual, us-gaap:AwardType, us-gaap:PlanName

srt:ChiefExecutiveOfficer, us-gaap:RestrictedStock, dbx:CoFounderGrants


Share
Period End2020-12-312017-12-31
Value0.010
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod0.00.0

Deferred Tax Assets Net

us-gaap:DeferredTaxAssetsNet

us-gaap:DeferredTaxAssetsNet


Deferred
Period End2020-12-312019-12-312018-12-312017-12-31
Value1451871.07.8
Percentage of DeferredTaxAssetsNet100.0100.0100.0100.0

Unrecognized Tax Benefits

us-gaap:UnrecognizedTaxBenefits

us-gaap:UnrecognizedTaxBenefits


Unrecognized
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-31
Value91745925157.9
Percentage of UnrecognizedTaxBenefits100.0100.0100.0100.0100.0100.0

us-gaap:UnrecognizedTaxBenefits us-gaap:IncomeTaxAuthority, us-gaap:TaxCreditCarryforward

us-gaap:DomesticCountry, us-gaap:Research


Unrecognized
Period End2020-12-312019-12-31
Value5142
Percentage of UnrecognizedTaxBenefits56.857.4

us-gaap:StateAndLocalJurisdiction, us-gaap:Research


Unrecognized
Period End2020-12-312019-12-31
Value2823
Percentage of UnrecognizedTaxBenefits31.231.7

Deferred Tax Assets Valuation Allowance

us-gaap:DeferredTaxAssetsValuationAllowance

us-gaap:DeferredTaxAssetsValuationAllowance


Deferred
Period End2020-12-312019-12-312018-12-312017-12-31
Value583510476233
Percentage of DeferredTaxAssetsValuationAllowance100.0100.0100.0100.0

Proceeds From Sale Of Short Term Investments

us-gaap:ProceedsFromSaleOfShortTermInvestments

us-gaap:ProceedsFromSaleOfShortTermInvestments


Proceeds
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value57114203378065-46.21607011011085160.00.00.0
Percentage of ProceedsFromSaleOfShortTermInvestments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.0

dbx:AdjustmentsToAdditionalPaidInCapitalConvertibleDebtTaxBenefitsAttributableToBondHedges

dbx:AdjustmentsToAdditionalPaidInCapitalConvertibleDebtTaxBenefitsAttributableToBondHedges


Adjustments
Period End2021-06-30
Value200000.0
Percentage of AdjustmentsToAdditionalPaidInCapitalConvertibleDebtTaxBenefitsAttributableToBondHedges100.0

dbx:AdjustmentsToAdditionalPaidInCapitalConvertibleDebtTaxBenefitsAttributableToBondHedges us-gaap:StatementEquityComponents

us-gaap:AdditionalPaidInCapital


Adjustments
Period End2021-06-30
Value200000.0
Percentage of AdjustmentsToAdditionalPaidInCapitalConvertibleDebtTaxBenefitsAttributableToBondHedges100.0

dbx:AllocatedSharebasedCompensationExpensePostCombination

dbx:AllocatedSharebasedCompensationExpensePostCombination


Allocated
Period End2020-12-31
Value0.0
Percentage of AllocatedSharebasedCompensationExpensePostCombination0.0

dbx:AllocatedSharebasedCompensationExpensePostCombination us-gaap:BusinessAcquisition

dbx:DocSendInc


Allocated
Period End2021-03-22
Value8.1
Percentage of AllocatedSharebasedCompensationExpensePostCombination0.0

dbx:BusinessCombinationConsiderationTransferredStockOptionsAssumed us-gaap:BusinessAcquisition

dbx:BusinessCombinationConsiderationTransferredStockOptionsAssumed

dbx:DocSendInc


Business
Period End2021-03-22
Value1200000.0
Percentage of BusinessCombinationConsiderationTransferredStockOptionsAssumed100.0

dbx:CapitalizedContractCostsAdditions

dbx:CapitalizedContractCostsAdditions


Capitalized
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value4.94.97.48.6117.87.07.46.47.37.17.47.79.83.46.35.0
Percentage of CapitalizedContractCostsAdditions100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

dbx:DeprecationDepletionAndAmortizationExcludingAmortizationOfDeferredSalesCommissions

dbx:DeprecationDepletionAndAmortizationExcludingAmortizationOfDeferredSalesCommissions


Deprecation
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value363438404039414046454545403542444648
Percentage of DeprecationDepletionAndAmortizationExcludingAmortizationOfDeferredSalesCommissions100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

dbx:DilutiveSecuritiesEffectOnBasicEPSDilutiveEffectOfReallocation us-gaap:StatementClassOfStock

dbx:DilutiveSecuritiesEffectOnBasicEPSDilutiveEffectOfReallocation

us-gaap:CommonClassB


Dilutive
Period End2021-06-302021-03-312020-09-302020-06-30
Value400000.0200000.0100000.0100000.0
Percentage of DilutiveSecuritiesEffectOnBasicEPSDilutiveEffectOfReallocation100.0100.0100.0100.0

dbx:IncreaseDecreaseInAccruedLiabilitiesAndOtherLiabilities

dbx:IncreaseDecreaseInAccruedLiabilitiesAndOtherLiabilities


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-14.66.3122.0-14.8-9.913-1.00.510.0-0.3-3.9358.8
Percentage of IncreaseDecreaseInAccruedLiabilitiesAndOtherLiabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

dbx:IncreaseDecreaseTenantImprovementAllowanceReimbursement

dbx:IncreaseDecreaseTenantImprovementAllowanceReimbursement


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-3.21.63.22.77.49.2100-16.9-14.7-13.80.00.00.00.0
Percentage of IncreaseDecreaseTenantImprovementAllowanceReimbursement100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.00.0

dbx:IncreaseDecreaseTenantImprovementAllowanceReimbursement dbx:LeaseArrangements

dbx:CorporateHeadquartersLease


Increase
Period End2021-03-312020-12-312020-09-302020-06-302020-03-31
Value-1.632-1.0-6.2-8.5
Percentage of IncreaseDecreaseTenantImprovementAllowanceReimbursement-100.01003.1-37.0-83.8-92.4

dbx:IncrementalCommonSharesAttributabletoDilutiveEffectofConversionofCommonStock us-gaap:StatementClassOfStock

dbx:IncrementalCommonSharesAttributabletoDilutiveEffectofConversionofCommonStock

us-gaap:CommonClassA


Incremental
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-06-30
Value8383971321570.0
Percentage of IncrementalCommonSharesAttributabletoDilutiveEffectofConversionofCommonStock100.0100.0100.0100.0100.00.0

dbx:PropertyPlantAndEquipmentFullyDepreciatedAssetsRetired us-gaap:PropertyPlantAndEquipmentByType

dbx:PropertyPlantAndEquipmentFullyDepreciatedAssetsRetired

us-gaap:ComputerEquipment


Property
Period End2021-03-312020-12-312020-09-30
Value54104110
Percentage of PropertyPlantAndEquipmentFullyDepreciatedAssetsRetired100.0100.0100.0

dbx:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsAwardsAssumedInPeriodAggregateFairValue us-gaap:AwardType, us-gaap:BusinessAcquisition

dbx:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsAwardsAssumedInPeriodAggregateFairValue

us-gaap:RestrictedStock, dbx:DocSendInc


Share
Period End2021-06-302021-03-31
Value0400000.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsAwardsAssumedInPeriodAggregateFairValue0.0100.0

dbx:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsAwardsAssumedInPeriodWeightedAverageGrantDateFairValue us-gaap:AwardType, us-gaap:BusinessAcquisition

dbx:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsAwardsAssumedInPeriodWeightedAverageGrantDateFairValue

us-gaap:RestrictedStock, dbx:DocSendInc


Share
Period End2021-06-302021-03-31
Value026.86
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsAwardsAssumedInPeriodWeightedAverageGrantDateFairValue0.0100.0

dbx:ShareBasedCompensationArrangementBySharebasedPaymentAwardDecreaseInNumberofSharesAuthorizedFromStockGranted

dbx:ShareBasedCompensationArrangementBySharebasedPaymentAwardDecreaseInNumberofSharesAuthorizedFromStockGranted


Share
Period End2021-06-302021-03-312020-12-31
Value9.72.92.4
Percentage of ShareBasedCompensationArrangementBySharebasedPaymentAwardDecreaseInNumberofSharesAuthorizedFromStockGranted100.0100.0100.0

dbx:SharebasedCompensationArrangementBySharebasedPaymentAwardSharesCanceled

dbx:SharebasedCompensationArrangementBySharebasedPaymentAwardSharesCanceled


Sharebased
Period End2021-06-302021-03-312020-12-31
Value3.04.23.0
Percentage of SharebasedCompensationArrangementBySharebasedPaymentAwardSharesCanceled100.0100.0100.0

dbx:SharebasedCompensationArrangementbySharebasedPaymentAwardAssumedThroughBusinessAcquisition

dbx:SharebasedCompensationArrangementbySharebasedPaymentAwardAssumedThroughBusinessAcquisition


Sharebased
Period End2021-06-302021-03-31
Value0400000.0
Percentage of SharebasedCompensationArrangementbySharebasedPaymentAwardAssumedThroughBusinessAcquisition0.0100.0

dbx:SharebasedCompensationArrangementbySharebasedPaymentAwardEquityInstrumentsOtherthanOptionsReleasedinPeriod us-gaap:AwardType

dbx:SharebasedCompensationArrangementbySharebasedPaymentAwardEquityInstrumentsOtherthanOptionsReleasedinPeriod

us-gaap:RestrictedStock


Sharebased
Period End2021-06-302021-03-312020-12-31
Value3.13.83.7
Percentage of SharebasedCompensationArrangementbySharebasedPaymentAwardEquityInstrumentsOtherthanOptionsReleasedinPeriod100.0100.0100.0

dbx:SharebasedCompensationArrangementbySharebasedPaymentAwardEquityInstrumentsOtherthanOptionsReleasedinPeriodWeightedAverageGrantDateFairValue us-gaap:AwardType

dbx:SharebasedCompensationArrangementbySharebasedPaymentAwardEquityInstrumentsOtherthanOptionsReleasedinPeriodWeightedAverageGrantDateFairValue

us-gaap:RestrictedStock


Sharebased
Period End2021-06-302021-03-312020-12-31
Value0.6319.8-0.18
Percentage of SharebasedCompensationArrangementbySharebasedPaymentAwardEquityInstrumentsOtherthanOptionsReleasedinPeriodWeightedAverageGrantDateFairValue100.0100.0100.0

dbx:SharebasedCompensationArrangementbySharebasedPaymentAwardOptionsAssumedInBusinessAcquisitionWeightedAverageExercisePrice

dbx:SharebasedCompensationArrangementbySharebasedPaymentAwardOptionsAssumedInBusinessAcquisitionWeightedAverageExercisePrice


Sharebased
Period End2021-06-302021-03-31
Value02.17
Percentage of SharebasedCompensationArrangementbySharebasedPaymentAwardOptionsAssumedInBusinessAcquisitionWeightedAverageExercisePrice0.0100.0

dbx:SharebasedCompensationArrangementbySharebasedPaymentAwardOptionsAssumedThroughBusinessAcquisition

dbx:SharebasedCompensationArrangementbySharebasedPaymentAwardOptionsAssumedThroughBusinessAcquisition


Sharebased
Period End2021-06-302021-03-312019-12-312019-09-302019-06-302019-03-31
Value0400000.0000900000.0
Percentage of SharebasedCompensationArrangementbySharebasedPaymentAwardOptionsAssumedThroughBusinessAcquisition0.0100.00.00.00.0100.0

dbx:SharebasedCompensationArrangementbySharebasedPaymentAwardOptionsAssumedThroughBusinessAcquisition us-gaap:BusinessAcquisition

dbx:DocSendInc


Sharebased
Period End2021-03-22
Value400000.0
Percentage of SharebasedCompensationArrangementbySharebasedPaymentAwardOptionsAssumedThroughBusinessAcquisition0.0

dbx:SharebasedCompensationArrangementbySharebasedPaymentAwardOptionsAssumedThroughBusinessAcquisitionFairValue

dbx:SharebasedCompensationArrangementbySharebasedPaymentAwardOptionsAssumedThroughBusinessAcquisitionFairValue


Sharebased
Period End2020-12-31
Value0.0
Percentage of SharebasedCompensationArrangementbySharebasedPaymentAwardOptionsAssumedThroughBusinessAcquisitionFairValue0.0

dbx:SharebasedCompensationArrangementbySharebasedPaymentAwardOptionsAssumedThroughBusinessAcquisitionFairValue us-gaap:BusinessAcquisition

dbx:DocSendInc


Sharebased
Period End2021-03-22
Value9.3
Percentage of SharebasedCompensationArrangementbySharebasedPaymentAwardOptionsAssumedThroughBusinessAcquisitionFairValue0.0

dbx:SharebasedCompensationArrangementbySharebasedPaymentAwardOptionsAssumedinPeriodWeightedAverageGrantDateFairValue

dbx:SharebasedCompensationArrangementbySharebasedPaymentAwardOptionsAssumedinPeriodWeightedAverageGrantDateFairValue


Sharebased
Period End2020-12-31
Value0
Percentage of SharebasedCompensationArrangementbySharebasedPaymentAwardOptionsAssumedinPeriodWeightedAverageGrantDateFairValue0.0

dbx:SharebasedCompensationArrangementbySharebasedPaymentAwardOptionsAssumedinPeriodWeightedAverageGrantDateFairValue us-gaap:BusinessAcquisition

dbx:DocSendInc


Sharebased
Period End2021-03-22
Value25.28
Percentage of SharebasedCompensationArrangementbySharebasedPaymentAwardOptionsAssumedinPeriodWeightedAverageGrantDateFairValue0.0

dbx:SharesPaidForTaxWithholdingForShareBasedCompensationWeightedAverageGrantDateFairValue us-gaap:AwardType

dbx:SharesPaidForTaxWithholdingForShareBasedCompensationWeightedAverageGrantDateFairValue

us-gaap:RestrictedStock


Shares
Period End2021-06-302021-03-312020-12-31
Value1.6418.72-0.18
Percentage of SharesPaidForTaxWithholdingForShareBasedCompensationWeightedAverageGrantDateFairValue100.0100.0100.0

dbx:SharesReleasedDuringPeriodShares us-gaap:StatementEquityComponents

dbx:SharesReleasedDuringPeriodShares

us-gaap:CommonStock


Shares
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value3.13.83.73.33.42.72.73.02.92.62.83.93.130
Percentage of SharesReleasedDuringPeriodShares100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

dbx:UnrecognizedTaxBenefitsthatWouldImpactEffectiveTaxRateDuringThePeriod

dbx:UnrecognizedTaxBenefitsthatWouldImpactEffectiveTaxRateDuringThePeriod


Unrecognized
Period End2021-06-302021-03-312018-09-30
Value1000000.0500000.0800000.0
Percentage of UnrecognizedTaxBenefitsthatWouldImpactEffectiveTaxRateDuringThePeriod100.0100.0100.0

us-gaap:AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation

us-gaap:AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation


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
Value26352522251818192225254435247
Percentage of AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation 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
Value8.1111210119.316181817182620162
Percentage of AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation30.131.348.647.143.849.291.894.782.366.773.758.957.565.5

us-gaap:RetainedEarnings


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
Value18241311149.61.51.04.08.56.6181485
Percentage of AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation69.968.751.452.956.250.88.25.317.733.326.341.142.534.5

us-gaap:AdjustmentsToAdditionalPaidInCapitalConvertibleDebtWithConversionFeature

us-gaap:AdjustmentsToAdditionalPaidInCapitalConvertibleDebtWithConversionFeature


Adjustments
Period End2021-06-302021-03-31
Value0-265300000.0
Percentage of AdjustmentsToAdditionalPaidInCapitalConvertibleDebtWithConversionFeature0.0100.0

us-gaap:AdjustmentsToAdditionalPaidInCapitalConvertibleDebtWithConversionFeature us-gaap:StatementEquityComponents

us-gaap:AdditionalPaidInCapital


Adjustments
Period End2021-06-302021-03-31
Value0-265300000.0
Percentage of AdjustmentsToAdditionalPaidInCapitalConvertibleDebtWithConversionFeature0.0100.0

us-gaap:AdjustmentsToAdditionalPaidInCapitalWarrantIssued

us-gaap:AdjustmentsToAdditionalPaidInCapitalWarrantIssued


Adjustments
Period End2021-06-302021-03-31
Value0.0202
Percentage of AdjustmentsToAdditionalPaidInCapitalWarrantIssued0.0100.0

us-gaap:AdjustmentsToAdditionalPaidInCapitalWarrantIssued us-gaap:StatementEquityComponents

us-gaap:AdditionalPaidInCapital


Adjustments
Period End2021-06-302021-03-31
Value0.0202
Percentage of AdjustmentsToAdditionalPaidInCapitalWarrantIssued0.0100.0

us-gaap:AssetImpairmentCharges

us-gaap:AssetImpairmentCharges


Asset
Period End2021-06-302021-03-312020-12-31
Value0.017398
Percentage of AssetImpairmentCharges0.0100.0100.0

us-gaap:BusinessCombinationAcquisitionRelatedCosts us-gaap:BusinessAcquisition

us-gaap:BusinessCombinationAcquisitionRelatedCosts

dbx:DocSendInc


Business
Period End2021-03-31
Value1200000.0
Percentage of BusinessCombinationAcquisitionRelatedCosts100.0

us-gaap:BusinessCombinationConsiderationTransferred1 us-gaap:BusinessAcquisition

us-gaap:BusinessCombinationConsiderationTransferred1

dbx:DocSendInc


Business
Period End2021-03-22
Value131
Percentage of BusinessCombinationConsiderationTransferred1100.0

us-gaap:CapitalizedContractCostAmortization

us-gaap:CapitalizedContractCostAmortization


Capitalized
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value7.77.76.96.75.75.14.84.64.23.93.63.22.92.4
Percentage of CapitalizedContractCostAmortization100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ConcentrationRiskPercentage1 us-gaap:MajorCustomers, us-gaap:ConcentrationRiskByBenchmark, us-gaap:ConcentrationRiskByType

us-gaap:ConcentrationRiskPercentage1

dbx:CustomerAAndB, dbx:AccountsReceivableAndOtherReceivable, us-gaap:CustomerConcentrationRisk


Concentration
Period End2021-03-31
Value47.0
Percentage of ConcentrationRiskPercentage1100.0

us-gaap:ContractWithCustomerLiabilityRevenueRecognized

us-gaap:ContractWithCustomerLiabilityRevenueRecognized


Contract
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value29828331277267257282412332222121320818828178166155
Percentage of ContractWithCustomerLiabilityRevenueRecognized100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ConversionOfStockSharesConverted1 us-gaap:StatementClassOfStock

us-gaap:ConversionOfStockSharesConverted1

us-gaap:CommonClassB


Conversion
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value0.00.3140.1539.90.50.72511956140
Percentage of ConversionOfStockSharesConverted10.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:Depreciation

us-gaap:Depreciation


Depreciation
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value323135373636373742434343383440424344
Percentage of Depreciation100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DerivativeCostOfHedge us-gaap:DerivativeInstrumentRisk

us-gaap:DerivativeCostOfHedge

dbx:ConvertibleNoteHedge


Derivative
Period End2021-06-302021-03-31
Value0.0265
Percentage of DerivativeCostOfHedge0.0100.0

us-gaap:DilutiveSecuritiesEffectOnBasicEarningsPerShareOther us-gaap:StatementClassOfStock

us-gaap:DilutiveSecuritiesEffectOnBasicEarningsPerShareOther

us-gaap:CommonClassA


Dilutive
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-06-30
Value1810.07.75.6140.0
Percentage of DilutiveSecuritiesEffectOnBasicEarningsPerShareOther100.0100.0100.0100.0100.00.0

us-gaap:EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents

us-gaap:EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents


Effect
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value500000.0-900000.03300000.01400000.01600000.0-2200000.01900000.0-1900000.0-800000.01000000.0-1600000.0-100000.0-3000000.01600000.0
Percentage of EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:EquitySecuritiesFvNiGainLoss

us-gaap:EquitySecuritiesFvNiGainLoss


Equity
Period End2020-12-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-30
Value0.00.06.511-1.77.40.00.0
Percentage of EquitySecuritiesFvNiGainLoss0.00.0100.0100.0100.0100.00.00.0

us-gaap:FinanceLeasePrincipalPayments

us-gaap:FinanceLeasePrincipalPayments


Finance
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value26242421212121212426
Percentage of FinanceLeasePrincipalPayments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FinitelivedIntangibleAssetsAcquired1 us-gaap:BusinessAcquisition

us-gaap:FinitelivedIntangibleAssetsAcquired1

dbx:DocSendInc


Finitelived
Period End2021-03-22
Value20
Percentage of FinitelivedIntangibleAssetsAcquired1100.0

us-gaap:FinitelivedIntangibleAssetsAcquired1 us-gaap:BusinessAcquisition, us-gaap:FiniteLivedIntangibleAssetsByMajorClass

dbx:DocSendInc, us-gaap:CustomerRelationships


Finitelived
Period End2021-03-22
Value8.1
Percentage of FinitelivedIntangibleAssetsAcquired139.3

dbx:DocSendInc, us-gaap:DevelopedTechnologyRights


Finitelived
Period End2021-03-22
Value11
Percentage of FinitelivedIntangibleAssetsAcquired155.8

dbx:DocSendInc, us-gaap:TradeNames


Finitelived
Period End2021-03-22
Value1.0
Percentage of FinitelivedIntangibleAssetsAcquired14.9

us-gaap:ForeignCurrencyTransactionGainLossBeforeTax

us-gaap:ForeignCurrencyTransactionGainLossBeforeTax


Foreign
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value400000.0200000.0800000.02100000.01200000.0-1200000.01900000.0-600000.0-500000.0-100000.0-500000.0-1000000.0-1100000.0700000.0-1900000.02900000.01300000.02700000.0
Percentage of ForeignCurrencyTransactionGainLossBeforeTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:GoodwillAcquiredDuringPeriod

us-gaap:GoodwillAcquiredDuringPeriod


Goodwill
Period End2021-03-31
Value110
Percentage of GoodwillAcquiredDuringPeriod100.0

us-gaap:GoodwillForeignCurrencyTranslationGainLoss

us-gaap:GoodwillForeignCurrencyTranslationGainLoss


Goodwill
Period End2021-06-302021-03-312020-12-312018-12-31
Value800000.0-1000000.02600000.0-2400000.0
Percentage of GoodwillForeignCurrencyTranslationGainLoss100.0100.0100.0100.0

us-gaap:ImpairmentOfLeasehold

us-gaap:ImpairmentOfLeasehold


Impairment
Period End2020-12-31
Value162
Percentage of ImpairmentOfLeasehold100.0

us-gaap:ImpairmentOfRealEstate

us-gaap:ImpairmentOfRealEstate


Impairment
Period End2021-06-302021-03-31
Value0.017
Percentage of ImpairmentOfRealEstate0.0100.0

us-gaap:IncreaseDecreaseInAccountsAndOtherReceivables

us-gaap:IncreaseDecreaseInAccountsAndOtherReceivables


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value1.57.1-7.44.17.61.2-2.01.03.45.10.3-2.35.5-3.62.82.58.70.4
Percentage of IncreaseDecreaseInAccountsAndOtherReceivables100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInContractWithCustomerLiability

us-gaap:IncreaseDecreaseInContractWithCustomerLiability


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value152811146.52214269.4185.6141926
Percentage of IncreaseDecreaseInContractWithCustomerLiability100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInEmployeeRelatedLiabilities

us-gaap:IncreaseDecreaseInEmployeeRelatedLiabilities


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value33-70.6192229-59.7222121-45.9171815-26.2101013-20.1
Percentage of IncreaseDecreaseInEmployeeRelatedLiabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInOtherNoncurrentLiabilities

us-gaap:IncreaseDecreaseInOtherNoncurrentLiabilities


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value-26.4-34.1-30.3-16.4-9.7-16.5-16.8-18.4-14.0-13.28.30.53.20.2-1.03.2-3.6-3.0
Percentage of IncreaseDecreaseInOtherNoncurrentLiabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInOtherOperatingAssets

us-gaap:IncreaseDecreaseInOtherOperatingAssets


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value-21.2-17.9-6.6-22.3-15.3-17.8-19.4-15.6-15.0-11.20.8-7.1115.76.42.10.31.8
Percentage of IncreaseDecreaseInOtherOperatingAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets

us-gaap:IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value1112151.67.714-7.97.64.3140.613321.5190.94.7-7.1
Percentage of IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncrementalCommonSharesAttributableToShareBasedPaymentArrangements us-gaap:StatementClassOfStock

us-gaap:IncrementalCommonSharesAttributableToShareBasedPaymentArrangements

us-gaap:CommonClassA


Incremental
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-06-302019-03-31
Value8500000.07200000.05500000.06000000.01600000.000
Percentage of IncrementalCommonSharesAttributableToShareBasedPaymentArrangements100.0100.0100.0100.0100.00.00.0

us-gaap:CommonClassB


Incremental
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-06-302019-03-31
Value100000.0100000.0200000.0300000.0400000.000
Percentage of IncrementalCommonSharesAttributableToShareBasedPaymentArrangements1.21.43.65.025.00.00.0

us-gaap:InvestmentIncomeNet

us-gaap:InvestmentIncomeNet


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
Value1.91.92.12.62.7-5.15.35.75.66.26.05.04.31.4
Percentage of InvestmentIncomeNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OperatingLeaseImpairmentLoss us-gaap:Range, us-gaap:StatementScenario

us-gaap:OperatingLeaseImpairmentLoss

srt:Maximum, srt:ScenarioForecast


Operating
Period End2020-12-31
Value450
Percentage of OperatingLeaseImpairmentLoss100.0

srt:Minimum, srt:ScenarioForecast


Operating
Period End2020-12-31
Value400
Percentage of OperatingLeaseImpairmentLoss88.9

us-gaap:OptionIndexedToIssuersEquityStrikePrice1 us-gaap:DerivativeInstrumentRisk

us-gaap:OptionIndexedToIssuersEquityStrikePrice1

dbx:A2026NotesHedge


Option
Period End2021-06-302021-03-31
Value038.25
Percentage of OptionIndexedToIssuersEquityStrikePrice10.0100.0

dbx:A2028NotesHedge


Option
Period End2021-06-302021-03-31
Value035.35
Percentage of OptionIndexedToIssuersEquityStrikePrice10.092.4

us-gaap:OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentNetOfTaxPortionAttributableToParent

us-gaap:OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentNetOfTaxPortionAttributableToParent


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value100000.0-4500000.0-700000.0-600000.06000000.0-1800000.0-100000.0200000.0400000.01900000.0-300000.00-100000.0-100000.00000
Percentage of OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentNetOfTaxPortionAttributableToParent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.00.00.00.00.0

us-gaap:OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent

us-gaap:OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent


Other
Period End2021-06-302021-03-312020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value1100000.0-1800000.02900000.0-3000000.01300000.00-300000.01100000.0-2800000.0-100000.0-3600000.01500000.0-100000.01700000.01100000.02500000.0
Percentage of OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent

us-gaap:OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value1200000.0-6300000.04100000.0-600000.08900000.0-4800000.01200000.0200000.0100000.03000000.0-3100000.0-100000.0-3700000.01400000.0-100000.01700000.01100000.02500000.0
Percentage of OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent us-gaap:StatementEquityComponents

us-gaap: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
Value1200000.0-6300000.04100000.0-600000.08900000.0-4800000.01200000.0200000.0100000.03000000.0-3100000.00-3700000.01400000.0
Percentage of OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0-0.0100.0100.0

us-gaap:OtherNoncashIncomeExpense

us-gaap:OtherNoncashIncomeExpense


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value5.30.91.70.81.3-1.28.30.73.24.41.0-0.20.50.6-0.10.90.40.5
Percentage of OtherNoncashIncomeExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherPaymentsToAcquireBusinesses us-gaap:BusinessAcquisition

us-gaap:OtherPaymentsToAcquireBusinesses

dbx:DocSendInc


Other
Period End2021-03-22
Value5000000.0
Percentage of OtherPaymentsToAcquireBusinesses100.0

us-gaap:PaymentsForHedgeFinancingActivities

us-gaap:PaymentsForHedgeFinancingActivities


Payments
Period End2021-06-302021-03-31
Value0.0265
Percentage of PaymentsForHedgeFinancingActivities0.0100.0

us-gaap:PaymentsForProceedsFromOtherInvestingActivities

us-gaap:PaymentsForProceedsFromOtherInvestingActivities


Payments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value-14200000.0-3300000.0-4900000.0-3100000.0-5500000.0-3800000.0-7800000.03200000.0-6900000.0-4700000.0400000.0-1000000.0-800000.02400000.0
Percentage of PaymentsForProceedsFromOtherInvestingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PaymentsOfDebtIssuanceCosts

us-gaap:PaymentsOfDebtIssuanceCosts


Payments
Period End2021-06-302021-03-31
Value1.022
Percentage of PaymentsOfDebtIssuanceCosts100.0100.0

us-gaap:PaymentsRelatedToTaxWithholdingForShareBasedCompensation

us-gaap:PaymentsRelatedToTaxWithholdingForShareBasedCompensation


Payments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value2635252225181819222525444124115480.024
Percentage of PaymentsRelatedToTaxWithholdingForShareBasedCompensation100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0

us-gaap:PaymentsToAcquireAvailableForSaleSecuritiesDebt

us-gaap:PaymentsToAcquireAvailableForSaleSecuritiesDebt


Payments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value1795132151113081201921932361531861683151800.00.00.00.0
Percentage of PaymentsToAcquireAvailableForSaleSecuritiesDebt100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.00.0

us-gaap:PaymentsToAcquireBusinessesGross us-gaap:BusinessAcquisition

us-gaap:PaymentsToAcquireBusinessesGross

dbx:DocSendInc


Payments
Period End2021-03-22
Value125
Percentage of PaymentsToAcquireBusinessesGross100.0

us-gaap:PaymentsToAcquireBusinessesNetOfCashAcquired

us-gaap:PaymentsToAcquireBusinessesNetOfCashAcquired


Payments
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
Value0.01250.00.02.30.0-0.51720.00.00.00.0
Percentage of PaymentsToAcquireBusinessesNetOfCashAcquired0.0100.00.00.0100.00.0100.0100.00.00.00.00.0

us-gaap:ProceedsFromConvertibleDebt

us-gaap:ProceedsFromConvertibleDebt


Proceeds
Period End2021-06-302021-03-31
Value14001389
Percentage of ProceedsFromConvertibleDebt100.0100.0

us-gaap:ProceedsFromConvertibleDebt us-gaap:DebtInstrument, us-gaap:LongtermDebtType

dbx:A2026ConvertibleNotes, us-gaap:ConvertibleDebt


Proceeds
Period End2021-03-31
Value695
Percentage of ProceedsFromConvertibleDebt50.1

dbx:A2028ConvertibleNotes, us-gaap:ConvertibleDebt


Proceeds
Period End2021-03-31
Value693
Percentage of ProceedsFromConvertibleDebt49.9

us-gaap:ProceedsFromIssuanceOfCommonStock

us-gaap:ProceedsFromIssuanceOfCommonStock


Proceeds
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value2.62.90.70.10.80.70.20.01.10.9168.80.20.80.0
Percentage of ProceedsFromIssuanceOfCommonStock100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.00.0

us-gaap:ProceedsFromIssuanceOfWarrants

us-gaap:ProceedsFromIssuanceOfWarrants


Proceeds
Period End2021-06-302021-03-31
Value0.0202
Percentage of ProceedsFromIssuanceOfWarrants0.0100.0

us-gaap:ProceedsFromMaturitiesPrepaymentsAndCallsOfShorttermInvestments

us-gaap:ProceedsFromMaturitiesPrepaymentsAndCallsOfShorttermInvestments


Proceeds
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value134129-23.18371672197595669.6583.10.00.00.0
Percentage of ProceedsFromMaturitiesPrepaymentsAndCallsOfShorttermInvestments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.0

us-gaap:ProceedsFromPaymentsForOtherFinancingActivities

us-gaap:ProceedsFromPaymentsForOtherFinancingActivities


Proceeds
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value0-300000.0-100000.0-400000.0-200000.0300000.0-500000.0-200000.03500000.0-3000000.0-1800000.0-1300000.04800000.0-2000000.0-3900000.0-1200000.0
Percentage of ProceedsFromPaymentsForOtherFinancingActivities0.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RightOfUseAssetObtainedInExchangeForFinanceLeaseLiability

us-gaap:RightOfUseAssetObtainedInExchangeForFinanceLeaseLiability


Right
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value43243941293437313539
Percentage of RightOfUseAssetObtainedInExchangeForFinanceLeaseLiability100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod

us-gaap:RestrictedStock


Share
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-31
Value2.94.23.01.82.53.3
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod100.0100.0100.0100.0100.0100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue

us-gaap:RestrictedStock


Share
Period End2021-06-302021-03-312020-12-31
Value0.6919.75-0.22
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue100.0100.0100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue

us-gaap:RestrictedStock


Share
Period End2021-06-302021-03-312020-12-312018-12-312018-09-302018-06-302018-03-31
Value3.3822.250.031.011.370.6817.2
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue100.0100.0100.0100.0100.0100.0100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfAdditionalSharesAuthorized

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfAdditionalSharesAuthorized


Share
Period End2021-06-302021-03-312020-12-31
Value0.0200.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfAdditionalSharesAuthorized0.0100.00.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue


Share
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value4.04.71.00.53.01.80.50.31.43.125320.31.70.20.00.01.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.0100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriodWeightedAverageExercisePrice

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriodWeightedAverageExercisePrice


Share
Period End2021-06-302021-03-312020-12-31
Value4.5510.360.1
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriodWeightedAverageExercisePrice100.0100.0100.0

us-gaap:ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice

us-gaap:ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice


Share
Period End2021-06-302021-03-312020-12-31
Value0.929.110.93
Percentage of ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice100.0100.0100.0

us-gaap:SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedOptionsForfeitedNumberOfShares

us-gaap:SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedOptionsForfeitedNumberOfShares


Sharebased
Period End2020-12-31
Value100000.0
Percentage of SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedOptionsForfeitedNumberOfShares100.0

us-gaap:SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedNumberOfShares

us-gaap:SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedNumberOfShares


Sharebased
Period End2021-06-302021-03-312020-12-31
Value-200000.0800000.00
Percentage of SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedNumberOfShares100.0100.00.0

us-gaap:SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedWeightedAverageGrantDateFairValue

us-gaap:SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedWeightedAverageGrantDateFairValue


Sharebased
Period End2021-06-302021-03-312020-12-31
Value0.6718.12-0.17
Percentage of SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedWeightedAverageGrantDateFairValue100.0100.0100.0

us-gaap:SharesPaidForTaxWithholdingForShareBasedCompensation

us-gaap:SharesPaidForTaxWithholdingForShareBasedCompensation


Shares
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value1.01.51.41.11.21.01.01.11.01.0
Percentage of SharesPaidForTaxWithholdingForShareBasedCompensation100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:SharesPaidForTaxWithholdingForShareBasedCompensation us-gaap:StatementEquityComponents

us-gaap:CommonStock


Shares
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value1.01.51.41.11.21.01.01.11.01.01.11.51.211
Percentage of SharesPaidForTaxWithholdingForShareBasedCompensation100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.00.0

us-gaap:StockIssuedDuringPeriodSharesStockOptionsExercised

us-gaap:StockIssuedDuringPeriodSharesStockOptionsExercised


Stock
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value200000.0300000.00100000.0200000.0100000.000100000.0200000.0
Percentage of StockIssuedDuringPeriodSharesStockOptionsExercised100.0100.00.0100.0100.0100.00.00.0100.0100.0

us-gaap:StockIssuedDuringPeriodSharesStockOptionsExercised us-gaap:StatementEquityComponents

us-gaap:CommonStock


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
Value100000.0400000.0100000.0100000.0200000.0100000.000100000.0200000.01700000.01500000.00200000.0
Percentage of StockIssuedDuringPeriodSharesStockOptionsExercised50.0133.30.0100.0100.0100.00.00.0100.0100.00.00.00.00.0

us-gaap:StockIssuedDuringPeriodValueAcquisitions

us-gaap:StockIssuedDuringPeriodValueAcquisitions


Stock
Period End2021-06-302021-03-312019-12-312019-09-302019-06-302019-03-31
Value01200000.0000800000.0
Percentage of StockIssuedDuringPeriodValueAcquisitions0.0100.00.00.00.0100.0

us-gaap:StockIssuedDuringPeriodValueAcquisitions us-gaap:StatementEquityComponents

us-gaap:AdditionalPaidInCapital


Stock
Period End2021-06-302021-03-312019-12-312019-09-302019-06-302019-03-31
Value01200000.0000800000.0
Percentage of StockIssuedDuringPeriodValueAcquisitions0.0100.00.00.00.0100.0

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
Value2.62.90.70.10.90.60.20.01.10.9168.80.20.8
Percentage of StockIssuedDuringPeriodValueStockOptionsExercised100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0

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
Value2.62.90.70.10.90.60.20.01.10.9168.80.20.8
Percentage of StockIssuedDuringPeriodValueStockOptionsExercised100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0

us-gaap:StockRepurchasedAndRetiredDuringPeriodShares

us-gaap:StockRepurchasedAndRetiredDuringPeriodShares


Stock
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-31
Value5.518111.83.73.7
Percentage of StockRepurchasedAndRetiredDuringPeriodShares100.0100.0100.0100.0100.0100.0

us-gaap:StockRepurchasedAndRetiredDuringPeriodShares us-gaap:LongtermDebtType

us-gaap:ConvertibleDebt


Stock
Period End2021-06-302021-03-31
Value0.08.6
Percentage of StockRepurchasedAndRetiredDuringPeriodShares0.046.2

us-gaap:StockRepurchasedAndRetiredDuringPeriodValue

us-gaap:StockRepurchasedAndRetiredDuringPeriodValue


Stock
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-31
Value150431220377564
Percentage of StockRepurchasedAndRetiredDuringPeriodValue100.0100.0100.0100.0100.0100.0

us-gaap:StockRepurchasedDuringPeriodShares us-gaap:StatementEquityComponents

us-gaap:StockRepurchasedDuringPeriodShares

us-gaap:CommonStock


Stock
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-31
Value5.518111.83.73.7
Percentage of StockRepurchasedDuringPeriodShares100.0100.0100.0100.0100.0100.0

us-gaap:StockRepurchasedDuringPeriodValue

us-gaap:StockRepurchasedDuringPeriodValue


Stock
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-31
Value150431220377564
Percentage of StockRepurchasedDuringPeriodValue100.0100.0100.0100.0100.0100.0

us-gaap:StockRepurchasedDuringPeriodValue us-gaap:StatementEquityComponents

us-gaap:AdditionalPaidInCapital


Stock
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-31
Value41142102163433
Percentage of StockRepurchasedDuringPeriodValue27.833.046.444.845.653.0

us-gaap:RetainedEarnings


Stock
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-31
Value108289118204130
Percentage of StockRepurchasedDuringPeriodValue72.267.053.655.254.447.0

us-gaap:SubleaseIncome

us-gaap:SubleaseIncome


Sublease
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value4.03.92.01.71.71.81.81.81.61.92.42.83.13.53.43.41.91.9
Percentage of SubleaseIncome100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:UnrecognizedTaxBenefitsDecreasesResultingFromAcquisition us-gaap:BusinessAcquisition

us-gaap:UnrecognizedTaxBenefitsDecreasesResultingFromAcquisition

dbx:DocSendInc


Unrecognized
Period End2021-03-31
Value1900000.0
Percentage of UnrecognizedTaxBenefitsDecreasesResultingFromAcquisition100.0

us-gaap:UnrecognizedTaxBenefitsPeriodIncreaseDecrease

us-gaap:UnrecognizedTaxBenefitsPeriodIncreaseDecrease


Unrecognized
Period End2021-06-302021-03-312020-09-302020-06-302018-09-302018-06-30
Value4.54.14.74.02.98.5
Percentage of UnrecognizedTaxBenefitsPeriodIncreaseDecrease100.0100.0100.0100.0100.0100.0

us-gaap:UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations

us-gaap:UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations


Unrecognized
Period End2021-06-302021-03-312020-12-312020-09-30
Value800000.0800000.0-800000.0800000.0
Percentage of UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations100.0100.0100.0100.0

us-gaap:WriteOffOfDeferredDebtIssuanceCost us-gaap:CreditFacility, us-gaap:DebtInstrument, us-gaap:LongtermDebtType

us-gaap:WriteOffOfDeferredDebtIssuanceCost

us-gaap:RevolvingCreditFacility, dbx:CreditAndGuaranteeAgreement, us-gaap:LineOfCredit


Write
Period End2021-02-28
Value200000.0
Percentage of WriteOffOfDeferredDebtIssuanceCost100.0

dbx:AccruedLiabilitiesandOtherLiabilitiesCurrent

dbx:AccruedLiabilitiesandOtherLiabilitiesCurrent


Accrued
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value158169156129134149161149149148164163172143129
Percentage of AccruedLiabilitiesandOtherLiabilitiesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

dbx:AvailableForSaleSecuritiesDebtMaturitiesAfterThreeYearsAmortizedCost

dbx:AvailableForSaleSecuritiesDebtMaturitiesAfterThreeYearsAmortizedCost


Available
Period End2021-06-302021-03-312020-12-312020-09-30
Value26245420773
Percentage of AvailableForSaleSecuritiesDebtMaturitiesAfterThreeYearsAmortizedCost100.0100.0100.0100.0

dbx:AvailableForSaleSecuritiesDebtMaturitiesAfterThreeYearsFairValue

dbx:AvailableForSaleSecuritiesDebtMaturitiesAfterThreeYearsFairValue


Available
Period End2021-06-302021-03-312020-09-302019-12-31
Value26145273208
Percentage of AvailableForSaleSecuritiesDebtMaturitiesAfterThreeYearsFairValue100.0100.0100.0100.0

dbx:BusinessCombinationSeparatelyRecognizedTransactionsPreexistingRelationshipPersonnelAgreement

dbx:BusinessCombinationSeparatelyRecognizedTransactionsPreexistingRelationshipPersonnelAgreement


Business
Period End2021-06-30
Value12
Percentage of BusinessCombinationSeparatelyRecognizedTransactionsPreexistingRelationshipPersonnelAgreement100.0

dbx:BusinessCombinationSeparatelyRecognizedTransactionsPreexistingRelationshipPersonnelAgreement us-gaap:BusinessAcquisition

dbx:DocSendInc


Business
Period End2021-03-22
Value30
Percentage of BusinessCombinationSeparatelyRecognizedTransactionsPreexistingRelationshipPersonnelAgreement0.0

dbx:HelloSignInc.


Business
Period End2021-03-312020-12-312020-09-302020-03-312019-02-08
Value1620243248
Percentage of BusinessCombinationSeparatelyRecognizedTransactionsPreexistingRelationshipPersonnelAgreement0.00.00.00.00.0

dbx:CashCashEquivalentsAndShortTermInvestmentsAmortizedCost

dbx:CashCashEquivalentsAndShortTermInvestmentsAmortizedCost


Cash
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value194419161117122111121080115710299719141089
Percentage of CashCashEquivalentsAndShortTermInvestmentsAmortizedCost100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

dbx:CashEquivalentsAndShorttermInvestments us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency

dbx:CashEquivalentsAndShorttermInvestments

us-gaap:FairValueInputsLevel1, us-gaap:FairValueMeasurementsRecurring


Cash
Period End2020-09-302020-06-302020-03-312019-03-312018-12-31
Value371241393226355
Percentage of CashEquivalentsAndShorttermInvestments100.0100.0100.0100.0100.0

us-gaap:FairValueInputsLevel2, us-gaap:FairValueMeasurementsRecurring


Cash
Period End2020-09-302020-06-302020-03-312019-03-312018-12-31
Value783787595578630
Percentage of CashEquivalentsAndShorttermInvestments211.1326.1151.2255.0177.4

dbx:CashEquivalentsAndShorttermInvestments us-gaap:FairValueByMeasurementFrequency

us-gaap:FairValueMeasurementsRecurring


Cash
Period End2020-09-302020-06-302020-03-312019-03-312018-12-31
Value11541029988805986
Percentage of CashEquivalentsAndShorttermInvestments311.1426.1251.2355.0277.4

dbx:DebtSecuritiesAvailableForSaleSecuritiesMaturityAllocatedAndSingleMaturityDateAfterOneThroughThreeYearsAmortizedCost

dbx:DebtSecuritiesAvailableForSaleSecuritiesMaturityAllocatedAndSingleMaturityDateAfterOneThroughThreeYearsAmortizedCost


Debt
Period End2021-06-302021-03-312020-12-312020-09-30
Value500512378347
Percentage of DebtSecuritiesAvailableForSaleSecuritiesMaturityAllocatedAndSingleMaturityDateAfterOneThroughThreeYearsAmortizedCost100.0100.0100.0100.0

dbx:DebtSecuritiesAvailableForSaleSecuritiesMaturityAllocatedAndSingleMaturityDateAfterOneThroughThreeYearsFairValue

dbx:DebtSecuritiesAvailableForSaleSecuritiesMaturityAllocatedAndSingleMaturityDateAfterOneThroughThreeYearsFairValue


Debt
Period End2021-06-302021-03-312020-09-302019-12-31
Value501514350381
Percentage of DebtSecuritiesAvailableForSaleSecuritiesMaturityAllocatedAndSingleMaturityDateAfterOneThroughThreeYearsFairValue100.0100.0100.0100.0

dbx:DeferredTaxAssetsAcquiredOperatingLossCarryforwardsNotSubjecttoExpiration us-gaap:IncomeTaxAuthority

dbx:DeferredTaxAssetsAcquiredOperatingLossCarryforwardsNotSubjecttoExpiration

us-gaap:ForeignCountry


Deferred
Period End2020-12-31
Value22
Percentage of DeferredTaxAssetsAcquiredOperatingLossCarryforwardsNotSubjecttoExpiration100.0

dbx:DeferredTaxAssetsLeaseLiability

dbx:DeferredTaxAssetsLeaseLiability


Deferred
Period End2020-12-312019-12-312018-12-31
Value2081890.0
Percentage of DeferredTaxAssetsLeaseLiability100.0100.00.0

dbx:DeferredTaxAssetsOperatingLossCarryforwardsNotSubjecttoExpirationAvailableToReduceFutureTaxableIncome us-gaap:IncomeTaxAuthority

dbx:DeferredTaxAssetsOperatingLossCarryforwardsNotSubjecttoExpirationAvailableToReduceFutureTaxableIncome

us-gaap:ForeignCountry


Deferred
Period End2020-12-31
Value407
Percentage of DeferredTaxAssetsOperatingLossCarryforwardsNotSubjecttoExpirationAvailableToReduceFutureTaxableIncome100.0

dbx:DeferredTaxLiabilitiesFixedAndIntangibleAssets

dbx:DeferredTaxLiabilitiesFixedAndIntangibleAssets


Deferred
Period End2020-12-312019-12-312018-12-312017-12-31
Value5.8130.06.6
Percentage of DeferredTaxLiabilitiesFixedAndIntangibleAssets100.0100.00.0100.0

dbx:DeferredTaxLiabilitiesRightOfUseAssets

dbx:DeferredTaxLiabilitiesRightOfUseAssets


Deferred
Period End2020-12-312019-12-312018-12-31
Value1351720.0
Percentage of DeferredTaxLiabilitiesRightOfUseAssets100.0100.00.0

dbx:FinanceLeaseLiabilityInterestAndTaxes

dbx:FinanceLeaseLiabilityInterestAndTaxes


Finance
Period End2020-12-31
Value13
Percentage of FinanceLeaseLiabilityInterestAndTaxes100.0

dbx:FiniteLivedIntangibleAssetExpectedAmortizationafterYearFour

dbx:FiniteLivedIntangibleAssetExpectedAmortizationafterYearFour


Finite
Period End2021-06-302021-03-312020-09-30
Value2100000.02100000.02600000.0
Percentage of FiniteLivedIntangibleAssetExpectedAmortizationafterYearFour100.0100.0100.0

dbx:LesseeOperatingAndShortTermLeasesPaymentsDue

dbx:LesseeOperatingAndShortTermLeasesPaymentsDue


Lessee
Period End2020-12-31
Value1195
Percentage of LesseeOperatingAndShortTermLeasesPaymentsDue100.0

dbx:LesseeOperatingAndShortTermLeasesPaymentsDueAfterYearFive

dbx:LesseeOperatingAndShortTermLeasesPaymentsDueAfterYearFive


Lessee
Period End2020-12-31
Value642
Percentage of LesseeOperatingAndShortTermLeasesPaymentsDueAfterYearFive100.0

dbx:LesseeOperatingAndShortTermLeasesPaymentsDueYearFive

dbx:LesseeOperatingAndShortTermLeasesPaymentsDueYearFive


Lessee
Period End2020-12-31
Value93
Percentage of LesseeOperatingAndShortTermLeasesPaymentsDueYearFive100.0

dbx:LesseeOperatingAndShortTermLeasesPaymentsDueYearFour

dbx:LesseeOperatingAndShortTermLeasesPaymentsDueYearFour


Lessee
Period End2020-12-31
Value98
Percentage of LesseeOperatingAndShortTermLeasesPaymentsDueYearFour100.0

dbx:LesseeOperatingAndShortTermLeasesPaymentsDueYearOne

dbx:LesseeOperatingAndShortTermLeasesPaymentsDueYearOne


Lessee
Period End2020-12-31
Value125
Percentage of LesseeOperatingAndShortTermLeasesPaymentsDueYearOne100.0

dbx:LesseeOperatingAndShortTermLeasesPaymentsDueYearThree

dbx:LesseeOperatingAndShortTermLeasesPaymentsDueYearThree


Lessee
Period End2020-12-31
Value109
Percentage of LesseeOperatingAndShortTermLeasesPaymentsDueYearThree100.0

dbx:LesseeOperatingAndShortTermLeasesPaymentsDueYearTwo

dbx:LesseeOperatingAndShortTermLeasesPaymentsDueYearTwo


Lessee
Period End2020-12-31
Value125
Percentage of LesseeOperatingAndShortTermLeasesPaymentsDueYearTwo100.0

dbx:LesseeOperatingLeaseLeaseNotYetCommencedAmount

dbx:LesseeOperatingLeaseLeaseNotYetCommencedAmount


Lessee
Period End2021-06-302021-03-31
Value108105
Percentage of LesseeOperatingLeaseLeaseNotYetCommencedAmount100.0100.0

dbx:LesseeOperatingLeaseLiabilitytobePaidafterYearFour

dbx:LesseeOperatingLeaseLiabilitytobePaidafterYearFour


Lessee
Period End2021-06-302021-03-312020-09-30
Value566566650
Percentage of LesseeOperatingLeaseLiabilitytobePaidafterYearFour100.0100.0100.0

dbx:LesseeOperatingLeaseTenantImprovementAllowanceReceivable

dbx:LesseeOperatingLeaseTenantImprovementAllowanceReceivable


Lessee
Period End2021-06-302021-03-312020-12-312020-09-30
Value8.08.69.612
Percentage of LesseeOperatingLeaseTenantImprovementAllowanceReceivable100.0100.0100.0100.0

dbx:LessorOperatingLeaseLeaseNotYetCommencedAmount

dbx:LessorOperatingLeaseLeaseNotYetCommencedAmount


Lessor
Period End2021-06-30
Value16
Percentage of LessorOperatingLeaseLeaseNotYetCommencedAmount100.0

dbx:OperatingLeaseLessorOperatingLeasePaymentsToBeReceivedLessLeaseIncentives

dbx:OperatingLeaseLessorOperatingLeasePaymentsToBeReceivedLessLeaseIncentives


Operating
Period End2021-06-302021-03-312020-12-31
Value121120123
Percentage of OperatingLeaseLessorOperatingLeasePaymentsToBeReceivedLessLeaseIncentives100.0100.0100.0

dbx:OperatingLeaseMinimumObligations

dbx:OperatingLeaseMinimumObligations


Operating
Period End2020-12-312020-09-302020-06-302020-03-312019-12-31
Value836803815842842
Percentage of OperatingLeaseMinimumObligations100.0100.0100.0100.0100.0

dbx:OtherAccruedLiabilitiesAndOtherLiabilitiesCurrent

dbx:OtherAccruedLiabilitiesAndOtherLiabilitiesCurrent


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
Value485147222731403230301614
Percentage of OtherAccruedLiabilitiesAndOtherLiabilitiesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

dbx:SharebasedCompensationArrangementbySharebasedPaymentAwardOptionsNonvestedAggregateIntrinsicValue

dbx:SharebasedCompensationArrangementbySharebasedPaymentAwardOptionsNonvestedAggregateIntrinsicValue


Sharebased
Period End2021-06-302021-03-312020-12-312020-09-30
Value12134.64.72
Percentage of SharebasedCompensationArrangementbySharebasedPaymentAwardOptionsNonvestedAggregateIntrinsicValue100.0100.0100.0100.0

dbx:UnrecognizedTaxBenefitThatWouldResultInAdjustmentToDeferredTaxAssets

dbx:UnrecognizedTaxBenefitThatWouldResultInAdjustmentToDeferredTaxAssets


Unrecognized
Period End2020-12-31
Value80
Percentage of UnrecognizedTaxBenefitThatWouldResultInAdjustmentToDeferredTaxAssets100.0

dei:EntityCommonStockSharesOutstanding us-gaap:StatementClassOfStock

dei:EntityCommonStockSharesOutstanding

us-gaap:CommonClassA


Entity
Period End2020-08-032020-05-042020-02-182019-11-042019-08-052019-05-062019-02-192018-10-312018-07-312018-04-30
Value31526225825325122721316711273
Percentage of EntityCommonStockSharesOutstanding100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:CommonClassB


Entity
Period End2020-08-032020-05-042020-02-182019-11-042019-08-052019-05-062019-02-192018-10-312018-07-312018-04-30
Value97150160161161242198238290326
Percentage of EntityCommonStockSharesOutstanding31.057.162.263.664.2106.693.1142.0259.1442.6

us-gaap:AccrualForTaxesOtherThanIncomeTaxesCurrent

us-gaap:AccrualForTaxesOtherThanIncomeTaxesCurrent


Accrual
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value8191858987939288878375727369
Percentage of AccrualForTaxesOtherThanIncomeTaxesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AccruedProfessionalFeesCurrent

us-gaap:AccruedProfessionalFeesCurrent


Accrued
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value2826231818252928303428282521
Percentage of AccruedProfessionalFeesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AllowanceForDoubtfulAccountsPremiumsAndOtherReceivables

us-gaap:AllowanceForDoubtfulAccountsPremiumsAndOtherReceivables


Allowance
Period End2020-12-312019-12-312018-12-31
Value500000.0500000.01200000.0
Percentage of AllowanceForDoubtfulAccountsPremiumsAndOtherReceivables100.0100.0100.0

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

us-gaap:AssetsFairValueDisclosure

us-gaap:FairValueInputsLevel1, us-gaap:FairValueMeasurementsRecurring


Assets
Period End2021-06-302021-03-312020-12-312019-12-312019-09-302019-06-302018-12-31
Value790753222454343223355
Percentage of AssetsFairValueDisclosure100.0100.0100.0100.0100.0100.0100.0

us-gaap:FairValueInputsLevel2, us-gaap:FairValueMeasurementsRecurring


Assets
Period End2021-06-302021-03-312020-12-312019-12-312019-09-302019-06-302018-12-31
Value10831097831609595651630
Percentage of AssetsFairValueDisclosure137.1145.7373.5134.3173.2291.4177.4

us-gaap:AssetsFairValueDisclosure us-gaap:FairValueByMeasurementFrequency

us-gaap:FairValueMeasurementsRecurring


Assets
Period End2021-06-302021-03-312020-12-312019-12-312019-09-302019-06-302018-12-31
Value1873185110541063939875986
Percentage of AssetsFairValueDisclosure237.1245.7473.5234.3273.2391.4277.4

us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax

us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value1900000.02500000.04300000.05100000.05900000.03000000.01500000.01700000.01600000.0600000.0100000.0100000.000
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.0

us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax us-gaap:FinancialInstrument

us-gaap:AssetBackedSecurities


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value300000.0400000.0600000.0700000.0700000.0100000.000
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax15.816.014.013.711.93.30.00.0

us-gaap:CorporateDebtSecurities


Available
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value3000000.03300000.0600000.01200000.01400000.01400000.0600000.0100000.0100000.000
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax58.855.920.080.082.487.5100.0100.0100.00.00.0

us-gaap:CorporateNoteSecurities


Available
Period End2021-06-302021-03-312020-12-312019-12-312018-12-31
Value1300000.01700000.02500000.01200000.0100000.0
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax68.468.058.180.0100.0

us-gaap:MunicipalBonds


Available
Period End2021-06-302020-12-312020-06-302020-03-312019-12-312019-09-30
Value100000.0100000.0100000.0000
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax5.32.31.70.00.00.0

us-gaap:USGovernmentCorporationsAndAgenciesSecurities


Available
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
Value100000.0100000.0100000.0200000.000000000
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax2.32.01.76.70.00.00.00.00.00.00.00.0

us-gaap:USTreasurySecurities


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value200000.0400000.01000000.01300000.01700000.02100000.0300000.0300000.0200000.000000
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax10.516.023.325.528.870.020.017.612.50.00.00.00.00.0

us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax

us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value2100000.02900000.0100000.0100000.0300000.03400000.0100000.0200000.0100000.0100000.0600000.0300000.0200000.0100000.0
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax us-gaap:FinancialInstrument

us-gaap:AssetBackedSecurities


Available
Period End2021-06-302021-03-312020-06-302020-03-312019-12-312019-09-30
Value200000.0200000.0100000.0700000.00100000.0
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax9.56.933.320.60.050.0

us-gaap:CorporateDebtSecurities


Available
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value100000.0200000.02700000.0100000.0000500000.0200000.0200000.0100000.0
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax100.066.779.4100.00.00.00.083.366.7100.0100.0

us-gaap:CorporateNoteSecurities


Available
Period End2021-06-302021-03-312020-12-312019-12-312018-12-31
Value500000.01200000.0100000.0100000.0500000.0
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax23.841.4100.0100.083.3

us-gaap:MunicipalBonds


Available
Period End2021-06-302021-03-312020-06-302020-03-312019-12-312019-09-30
Value200000.0200000.00000
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax9.56.90.00.00.00.0

us-gaap:USGovernmentCorporationsAndAgenciesSecurities


Available
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
Value100000.0100000.00000000000
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax4.83.40.00.00.00.00.00.00.00.00.00.0

us-gaap:USTreasurySecurities


Available
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
Value1100000.01200000.0000100000.0100000.0100000.0100000.0100000.000
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax52.441.40.00.00.050.0100.0100.016.733.30.00.0

us-gaap:AvailableForSaleDebtSecuritiesAmortizedCostBasis

us-gaap:AvailableForSaleDebtSecuritiesAmortizedCostBasis


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value10591071802768777594606586627555570503477180
Percentage of AvailableForSaleDebtSecuritiesAmortizedCostBasis100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AvailableForSaleDebtSecuritiesAmortizedCostBasis us-gaap:FinancialInstrument

dbx:SupranationalSecurities


Available
Period End2021-06-302021-03-312020-12-312020-03-312019-12-31
Value1717182.84.0
Percentage of AvailableForSaleDebtSecuritiesAmortizedCostBasis1.61.62.30.50.7

us-gaap:AssetBackedSecurities


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value119115738483595344
Percentage of AvailableForSaleDebtSecuritiesAmortizedCostBasis11.210.89.210.910.79.98.97.6

us-gaap:CertificatesOfDeposit


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value535017162630384445527058535.1
Percentage of AvailableForSaleDebtSecuritiesAmortizedCostBasis5.04.72.22.13.35.26.37.77.29.412.411.711.22.8

us-gaap:CommercialPaper


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value7789222440212434502717172710
Percentage of AvailableForSaleDebtSecuritiesAmortizedCostBasis7.38.42.83.25.13.64.05.98.04.93.03.55.85.7

us-gaap:CorporateDebtSecurities


Available
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value38935828928525828824426920619257
Percentage of AvailableForSaleDebtSecuritiesAmortizedCostBasis50.646.148.647.144.146.044.147.341.140.231.7

us-gaap:CorporateNoteSecurities


Available
Period End2021-06-302021-03-312020-12-312019-12-312018-12-31
Value467465374285269
Percentage of AvailableForSaleDebtSecuritiesAmortizedCostBasis44.143.446.747.147.3

us-gaap:ForeignGovernmentShorttermDebtSecurities


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-30
Value1821189.32.8
Percentage of AvailableForSaleDebtSecuritiesAmortizedCostBasis1.72.02.31.20.4

us-gaap:MunicipalBonds


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value6255382.95.92.52.42.4
Percentage of AvailableForSaleDebtSecuritiesAmortizedCostBasis5.95.24.80.40.80.40.40.4

us-gaap:USGovernmentCorporationsAndAgenciesSecurities


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value1425233727152725473837363914
Percentage of AvailableForSaleDebtSecuritiesAmortizedCostBasis1.42.42.94.83.62.64.54.37.66.96.57.28.28.0

us-gaap:USTreasurySecurities


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value22923021520523417317117619519317618316593
Percentage of AvailableForSaleDebtSecuritiesAmortizedCostBasis21.721.526.926.730.129.228.230.031.134.730.936.434.651.8

us-gaap:AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss

us-gaap:AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss


Available
Period End2021-03-31
Value2900000.0
Percentage of AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss100.0

us-gaap:AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss us-gaap:FinancialInstrument

us-gaap:CorporateDebtSecurities


Available
Period End2020-09-302020-06-302020-03-31
Value100000.0200000.02700000.0
Percentage of AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss0.00.00.0

us-gaap:AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue

us-gaap:AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue


Available
Period End2020-12-31
Value100000.0
Percentage of AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue100.0

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesSingleMaturityDate

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesSingleMaturityDate


Available
Period End2021-06-302021-03-312020-09-302019-12-31
Value10581070773806
Percentage of AvailableForSaleSecuritiesDebtMaturitiesSingleMaturityDate100.0100.0100.0100.0

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesSingleMaturityDateAmortizedCostBasis

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesSingleMaturityDateAmortizedCostBasis


Available
Period End2021-06-302021-03-312020-12-312020-09-30
Value10591071802768
Percentage of AvailableForSaleSecuritiesDebtMaturitiesSingleMaturityDateAmortizedCostBasis100.0100.0100.0100.0

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost


Available
Period End2021-06-302021-03-312020-12-312020-09-30
Value295104215348
Percentage of AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost100.0100.0100.0100.0

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue


Available
Period End2021-06-302021-03-312020-09-302019-12-31
Value296104349216
Percentage of AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue100.0100.0100.0100.0

us-gaap:AvailableForSaleSecuritiesDebtSecurities

us-gaap:AvailableForSaleSecuritiesDebtSecurities


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value10581070806773783593607587629556570502477180
Percentage of AvailableForSaleSecuritiesDebtSecurities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

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

us-gaap:FairValueInputsLevel2, us-gaap:FairValueMeasurementsRecurring


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value10581070806773783593607587629556570502477180
Percentage of AvailableForSaleSecuritiesDebtSecurities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

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

us-gaap:FairValueInputsLevel2, us-gaap:FairValueMeasurementsRecurring, dbx:SupranationalSecurities


Available
Period End2021-06-302021-03-312020-12-312020-03-312019-12-31
Value1717182.84.0
Percentage of AvailableForSaleSecuritiesDebtSecurities1.61.62.30.50.7

us-gaap:FairValueInputsLevel2, us-gaap:FairValueMeasurementsRecurring, us-gaap:AssetBackedSecurities


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value119116748483585344
Percentage of AvailableForSaleSecuritiesDebtSecurities11.210.89.210.910.79.98.97.6

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


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value535017162630384445527058535.1
Percentage of AvailableForSaleSecuritiesDebtSecurities5.04.72.22.13.35.26.37.67.29.412.411.711.22.8

us-gaap:FairValueInputsLevel2, us-gaap:FairValueMeasurementsRecurring, us-gaap:CommercialPaper


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value7789222440212434502717172710
Percentage of AvailableForSaleSecuritiesDebtSecurities7.38.42.83.25.13.64.05.98.04.93.03.55.85.7

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


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value46846537639236128628625929024526920619257
Percentage of AvailableForSaleSecuritiesDebtSecurities44.243.546.750.746.148.347.244.246.144.147.241.140.231.7

us-gaap:FairValueInputsLevel2, us-gaap:FairValueMeasurementsRecurring, us-gaap:CorporateNoteSecurities


Available
Period End2020-12-312019-12-31
Value376286
Percentage of AvailableForSaleSecuritiesDebtSecurities46.747.2

us-gaap:FairValueInputsLevel2, us-gaap:FairValueMeasurementsRecurring, us-gaap:ForeignGovernmentShorttermDebtSecurities


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-30
Value1821189.32.8
Percentage of AvailableForSaleSecuritiesDebtSecurities1.72.02.31.20.4

us-gaap:FairValueInputsLevel2, us-gaap:FairValueMeasurementsRecurring, us-gaap:MunicipalBonds


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value6255382.96.02.52.42.4
Percentage of AvailableForSaleSecuritiesDebtSecurities5.95.24.80.40.80.40.40.4

us-gaap:FairValueInputsLevel2, us-gaap:FairValueMeasurementsRecurring, us-gaap:USGovernmentCorporationsAndAgenciesSecurities


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value1425233727152725473837363914
Percentage of AvailableForSaleSecuritiesDebtSecurities1.42.42.94.83.62.64.54.37.66.96.57.28.28.0

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


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value22822921620623517517117619519217518316593
Percentage of AvailableForSaleSecuritiesDebtSecurities21.621.426.826.730.129.528.230.031.134.730.936.434.651.8

us-gaap:AvailableForSaleSecuritiesDebtSecurities us-gaap:FairValueByMeasurementFrequency

us-gaap:FairValueMeasurementsRecurring


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value10581070806773783614607587629556570502477180
Percentage of AvailableForSaleSecuritiesDebtSecurities100.0100.0100.0100.0100.0103.5100.0100.0100.0100.0100.0100.0100.0100.0

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

us-gaap:FairValueMeasurementsRecurring, dbx:SupranationalSecurities


Available
Period End2021-06-302021-03-312020-12-312020-03-312019-12-31
Value1717182.84.0
Percentage of AvailableForSaleSecuritiesDebtSecurities1.61.62.30.50.7

us-gaap:FairValueMeasurementsRecurring, us-gaap:AssetBackedSecurities


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value119116748483585344
Percentage of AvailableForSaleSecuritiesDebtSecurities11.210.89.210.910.79.98.97.6

us-gaap:FairValueMeasurementsRecurring, us-gaap:CertificatesOfDeposit


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value535017162630384445527058535.1
Percentage of AvailableForSaleSecuritiesDebtSecurities5.04.72.22.13.35.26.37.67.29.412.411.711.22.8

us-gaap:FairValueMeasurementsRecurring, us-gaap:CommercialPaper


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value7789222440212434502717172710
Percentage of AvailableForSaleSecuritiesDebtSecurities7.38.42.83.25.13.64.05.98.04.93.03.55.85.7

us-gaap:FairValueMeasurementsRecurring, us-gaap:CorporateDebtSecurities


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value46846537639236128628625929024526920619257
Percentage of AvailableForSaleSecuritiesDebtSecurities44.243.546.750.746.148.347.244.246.144.147.241.140.231.7

us-gaap:FairValueMeasurementsRecurring, us-gaap:CorporateNoteSecurities


Available
Period End2020-12-312019-12-31
Value376286
Percentage of AvailableForSaleSecuritiesDebtSecurities46.747.2

us-gaap:FairValueMeasurementsRecurring, us-gaap:ForeignGovernmentShorttermDebtSecurities


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-30
Value1821189.32.8
Percentage of AvailableForSaleSecuritiesDebtSecurities1.72.02.31.20.4

us-gaap:FairValueMeasurementsRecurring, us-gaap:MunicipalBonds


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value6255382.96.02.52.42.4
Percentage of AvailableForSaleSecuritiesDebtSecurities5.95.24.80.40.80.40.40.4

us-gaap:FairValueMeasurementsRecurring, us-gaap:USGovernmentCorporationsAndAgenciesSecurities


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value1425233727152725473837363914
Percentage of AvailableForSaleSecuritiesDebtSecurities1.42.42.94.83.62.64.54.37.66.96.57.28.28.0

us-gaap:FairValueMeasurementsRecurring, us-gaap:USTreasurySecurities


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value22822921620623517517117619519217518316593
Percentage of AvailableForSaleSecuritiesDebtSecurities21.621.426.826.730.129.528.230.031.134.730.936.434.651.8

us-gaap:AvailableForSaleSecuritiesDebtSecurities us-gaap:FinancialInstrument

dbx:SupranationalSecurities


Available
Period End2021-06-302021-03-312020-12-312020-03-312019-12-31
Value1717182.84.0
Percentage of AvailableForSaleSecuritiesDebtSecurities1.61.62.30.50.7

us-gaap:AssetBackedSecurities


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value119116748483585344
Percentage of AvailableForSaleSecuritiesDebtSecurities11.210.89.210.910.79.98.97.6

us-gaap:CertificatesOfDeposit


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value535017162630384445527058535.1
Percentage of AvailableForSaleSecuritiesDebtSecurities5.04.72.22.13.35.26.37.67.29.412.411.711.22.8

us-gaap:CommercialPaper


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value7789222440212434502717172710
Percentage of AvailableForSaleSecuritiesDebtSecurities7.38.42.83.25.13.64.05.98.04.93.03.55.85.7

us-gaap:CorporateDebtSecurities


Available
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value39236128628625929024526920619257
Percentage of AvailableForSaleSecuritiesDebtSecurities50.746.148.347.244.246.144.147.241.140.231.7

us-gaap:CorporateNoteSecurities


Available
Period End2021-06-302021-03-312020-12-312019-12-312018-12-31
Value468465376286269
Percentage of AvailableForSaleSecuritiesDebtSecurities44.243.546.747.247.2

us-gaap:ForeignGovernmentShorttermDebtSecurities


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-30
Value1821189.32.8
Percentage of AvailableForSaleSecuritiesDebtSecurities1.72.02.31.20.4

us-gaap:MunicipalBonds


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value6255382.96.02.52.42.4
Percentage of AvailableForSaleSecuritiesDebtSecurities5.95.24.80.40.80.40.40.4

us-gaap:USGovernmentCorporationsAndAgenciesSecurities


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value1425233727152725473837363914
Percentage of AvailableForSaleSecuritiesDebtSecurities1.42.42.94.83.62.64.54.37.66.96.57.28.28.0

us-gaap:USTreasurySecurities


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value22822921620623517517117619519217518316593
Percentage of AvailableForSaleSecuritiesDebtSecurities21.621.426.826.730.129.528.230.031.134.730.936.434.651.8

us-gaap:AvailableForSaleSecuritiesDebtSecuritiesCurrent

us-gaap:AvailableForSaleSecuritiesDebtSecuritiesCurrent


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value105810708067737836146075876295565705024771800.0
Percentage of AvailableForSaleSecuritiesDebtSecuritiesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssets us-gaap:BusinessAcquisition

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssets

dbx:DocSendInc


Business
Period End2021-03-22
Value31
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssets100.0

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCashAndEquivalents us-gaap:BusinessAcquisition

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCashAndEquivalents

dbx:DocSendInc


Business
Period End2021-03-22
Value5100000.0
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCashAndEquivalents100.0

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsPrepaidExpenseAndOtherAssets us-gaap:BusinessAcquisition

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsPrepaidExpenseAndOtherAssets

dbx:DocSendInc


Business
Period End2021-03-22
Value6100000.0
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsPrepaidExpenseAndOtherAssets100.0

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesAccountsPayable us-gaap:BusinessAcquisition

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesAccountsPayable

dbx:DocSendInc


Business
Period End2021-03-22
Value6400000.0
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesAccountsPayable100.0

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesDeferredRevenue us-gaap:BusinessAcquisition

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesDeferredRevenue

dbx:DocSendInc


Business
Period End2021-03-22
Value1900000.0
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesDeferredRevenue100.0

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibleAssetsOtherThanGoodwill us-gaap:BusinessAcquisition

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibleAssetsOtherThanGoodwill

dbx:DocSendInc


Business
Period End2021-03-22
Value20
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibleAssetsOtherThanGoodwill100.0

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilities us-gaap:BusinessAcquisition

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilities

dbx:DocSendInc


Business
Period End2021-03-22
Value10
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilities100.0

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet us-gaap:BusinessAcquisition

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet

dbx:DocSendInc


Business
Period End2021-03-22
Value21
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet100.0

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedNet us-gaap:BusinessAcquisition

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedNet

dbx:DocSendInc


Business
Period End2021-03-22
Value131
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedNet100.0

us-gaap:CapitalizedContractCostNet us-gaap:BalanceSheetLocation, us-gaap:CapitalizedContractCost

us-gaap:CapitalizedContractCostNet

us-gaap:OtherNoncurrentAssets, dbx:DeferredCommissions


Capitalized
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value404447484644434241403836333024
Percentage of CapitalizedContractCostNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PrepaidExpensesAndOtherCurrentAssets, dbx:DeferredCommissions


Capitalized
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value272726252422191817151413119.58.1
Percentage of CapitalizedContractCostNet68.161.556.452.553.350.245.744.042.139.537.935.833.830.832.7

us-gaap:CashAndCashEquivalentsFairValueDisclosure

us-gaap:CashAndCashEquivalentsFairValueDisclosure


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
Value885845314452334486551443343359519536504665
Percentage of CashAndCashEquivalentsFairValueDisclosure100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:CashAndCashEquivalentsFairValueDisclosure us-gaap:CashAndCashEquivalents

us-gaap:Cash


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
Value70656771881121051021101091039611071
Percentage of CashAndCashEquivalentsFairValueDisclosure8.07.721.315.826.523.019.023.032.130.619.818.022.010.7

us-gaap:CertificatesOfDeposit


Cash
Period End2021-06-302021-03-312020-09-302018-06-302018-03-31
Value3.610.01.03.50.5
Percentage of CashAndCashEquivalentsFairValueDisclosure0.41.20.20.70.1

us-gaap:CommercialPaper


Cash
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value21138.06.01.21.32.0211927244510
Percentage of CashAndCashEquivalentsFairValueDisclosure2.41.52.51.30.40.30.46.25.45.34.69.01.6

us-gaap:CorporateDebtSecurities


Cash
Period End2020-12-312020-09-302020-06-302019-06-302019-03-312018-03-31
Value5.02.91.11.13.02.6
Percentage of CashAndCashEquivalentsFairValueDisclosure1.60.60.30.30.80.4

us-gaap:CorporateNoteSecurities


Cash
Period End2021-03-312020-12-31
Value4.05.0
Percentage of CashAndCashEquivalentsFairValueDisclosure0.51.6

us-gaap:MoneyMarketFunds


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
Value790753222371241373444333211226355415344506
Percentage of CashAndCashEquivalentsFairValueDisclosure89.289.170.782.072.376.780.675.261.463.268.577.568.376.1

us-gaap:MunicipalBonds


Cash
Period End2020-12-312020-06-30
Value1.51.8
Percentage of CashAndCashEquivalentsFairValueDisclosure0.50.5

us-gaap:USTreasurySecurities


Cash
Period End2020-12-312019-09-302018-12-312018-03-31
Value107.03362
Percentage of CashAndCashEquivalentsFairValueDisclosure3.41.66.49.3

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

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


Cash
Period End2021-06-302021-03-312020-09-302018-06-302018-03-31
Value3.610.01.03.50.5
Percentage of CashAndCashEquivalentsFairValueDisclosure0.41.20.20.70.1

us-gaap:CommercialPaper, us-gaap:FairValueInputsLevel2, us-gaap:FairValueMeasurementsRecurring


Cash
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value21138.06.01.21.32.0211927244510
Percentage of CashAndCashEquivalentsFairValueDisclosure2.41.52.51.30.40.30.46.25.45.34.69.01.6

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


Cash
Period End2021-03-312020-12-312020-09-302020-06-302019-06-302019-03-312018-03-31
Value4.05.02.91.11.13.02.6
Percentage of CashAndCashEquivalentsFairValueDisclosure0.51.60.60.30.30.80.4

us-gaap:CorporateNoteSecurities, us-gaap:FairValueInputsLevel2, us-gaap:FairValueMeasurementsRecurring


Cash
Period End2020-12-31
Value5.0
Percentage of CashAndCashEquivalentsFairValueDisclosure1.6

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


Cash
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value790753222371241373444333211226355415344506367
Percentage of CashAndCashEquivalentsFairValueDisclosure89.289.170.782.072.376.780.675.261.463.268.577.568.376.10.0

us-gaap:MunicipalBonds, us-gaap:FairValueInputsLevel2, us-gaap:FairValueMeasurementsRecurring


Cash
Period End2020-12-312020-06-30
Value1.51.8
Percentage of CashAndCashEquivalentsFairValueDisclosure0.50.5

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


Cash
Period End2020-12-312019-09-302018-12-312018-03-31
Value107.03362
Percentage of CashAndCashEquivalentsFairValueDisclosure3.41.66.49.3

us-gaap:CashAndCashEquivalentsFairValueDisclosure us-gaap:CashAndCashEquivalents, us-gaap:FairValueByMeasurementFrequency

us-gaap:CertificatesOfDeposit, us-gaap:FairValueMeasurementsRecurring


Cash
Period End2021-06-302021-03-312020-09-302018-06-302018-03-31
Value3.610.01.03.50.5
Percentage of CashAndCashEquivalentsFairValueDisclosure0.41.20.20.70.1

us-gaap:CommercialPaper, us-gaap:FairValueMeasurementsRecurring


Cash
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value21138.06.01.21.32.0211927244510
Percentage of CashAndCashEquivalentsFairValueDisclosure2.41.52.51.30.40.30.46.25.45.34.69.01.6

us-gaap:CorporateDebtSecurities, us-gaap:FairValueMeasurementsRecurring


Cash
Period End2021-03-312020-09-302020-06-302019-06-302019-03-312018-03-31
Value4.02.91.11.13.02.6
Percentage of CashAndCashEquivalentsFairValueDisclosure0.50.60.30.30.80.4

us-gaap:CorporateNoteSecurities, us-gaap:FairValueMeasurementsRecurring


Cash
Period End2020-12-31
Value5.0
Percentage of CashAndCashEquivalentsFairValueDisclosure1.6

us-gaap:MoneyMarketFunds, us-gaap:FairValueMeasurementsRecurring


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
Value790753222371241373444333211226355415344506
Percentage of CashAndCashEquivalentsFairValueDisclosure89.289.170.782.072.376.780.675.261.463.268.577.568.376.1

us-gaap:MunicipalBonds, us-gaap:FairValueMeasurementsRecurring


Cash
Period End2020-12-312020-06-30
Value1.51.8
Percentage of CashAndCashEquivalentsFairValueDisclosure0.50.5

us-gaap:USTreasurySecurities, us-gaap:FairValueMeasurementsRecurring


Cash
Period End2020-12-312019-09-302018-12-312018-03-31
Value107.03362
Percentage of CashAndCashEquivalentsFairValueDisclosure3.41.66.49.3

us-gaap:CashAndCashEquivalentsFairValueDisclosure us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency

us-gaap:FairValueInputsLevel1, us-gaap:FairValueMeasurementsRecurring


Cash
Period End2021-06-302021-03-312020-12-312020-09-302019-12-312018-12-31
Value790753222371444355
Percentage of CashAndCashEquivalentsFairValueDisclosure89.289.170.782.080.668.5

us-gaap:FairValueInputsLevel2, us-gaap:FairValueMeasurementsRecurring


Cash
Period End2021-06-302021-03-312020-12-312020-09-302019-12-312018-12-31
Value2427259.92.060
Percentage of CashAndCashEquivalentsFairValueDisclosure2.83.28.02.20.411.7

us-gaap:CashAndCashEquivalentsFairValueDisclosure us-gaap:FairValueByMeasurementFrequency

us-gaap:FairValueMeasurementsRecurring


Cash
Period End2021-06-302021-03-312020-12-312020-09-302019-12-312018-12-31
Value814780247381446416
Percentage of CashAndCashEquivalentsFairValueDisclosure92.092.378.784.281.080.2

us-gaap:CashCashEquivalentsAndShortTermInvestments

us-gaap:CashCashEquivalentsAndShortTermInvestments


Cash
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value194419161121122611171080115910309729151089
Percentage of CashCashEquivalentsAndShortTermInvestments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ConvertibleDebtFairValueDisclosures us-gaap:DebtInstrument

us-gaap:ConvertibleDebtFairValueDisclosures

dbx:A2026ConvertibleNotes


Convertible
Period End2021-06-302021-03-31
Value745717
Percentage of ConvertibleDebtFairValueDisclosures100.0100.0

dbx:A2028ConvertibleNotes


Convertible
Period End2021-06-302021-03-31
Value763716
Percentage of ConvertibleDebtFairValueDisclosures102.499.9

us-gaap:ConvertibleDebtNoncurrent

us-gaap:ConvertibleDebtNoncurrent


Convertible
Period End2021-06-302021-03-31
Value13681367
Percentage of ConvertibleDebtNoncurrent100.0100.0

us-gaap:CreditAndDebitCardReceivablesAtCarryingValue

us-gaap:CreditAndDebitCardReceivablesAtCarryingValue


Credit
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value10119.8121311111617151117121313
Percentage of CreditAndDebitCardReceivablesAtCarryingValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DebtIssuanceCostsLineOfCreditArrangementsGross us-gaap:CreditFacility, us-gaap:DebtInstrument, us-gaap:LongtermDebtType

us-gaap:DebtIssuanceCostsLineOfCreditArrangementsGross

us-gaap:RevolvingCreditFacility, dbx:CreditAndGuaranteeAgreement, us-gaap:LineOfCredit


Debt
Period End2021-02-282018-02-282017-04-30
Value1700000.0400000.02600000.0
Percentage of DebtIssuanceCostsLineOfCreditArrangementsGross100.0100.0100.0

us-gaap:DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss

us-gaap:DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss


Debt
Period End2021-06-302018-12-31
Value2100000.0-600000.0
Percentage of DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss100.0100.0

us-gaap:DebtSecuritiesAvailableForSaleUnrealizedLossPositionNumberOfPositions

us-gaap:DebtSecuritiesAvailableForSaleUnrealizedLossPositionNumberOfPositions


Debt
Period End2020-12-31
Value60.0
Percentage of DebtSecuritiesAvailableForSaleUnrealizedLossPositionNumberOfPositions100.0

us-gaap:DeferredIncomeTaxLiabilities

us-gaap:DeferredIncomeTaxLiabilities


Deferred
Period End2020-12-312019-12-312018-12-312017-12-31
Value1411860.07.0
Percentage of DeferredIncomeTaxLiabilities100.0100.00.0100.0

us-gaap:DeferredTaxAssetsGross

us-gaap:DeferredTaxAssetsGross


Deferred
Period End2020-12-312019-12-312018-12-312017-12-31
Value729698477241
Percentage of DeferredTaxAssetsGross100.0100.0100.0100.0

us-gaap:DeferredTaxAssetsOperatingLossCarryforwards

us-gaap:DeferredTaxAssetsOperatingLossCarryforwards


Deferred
Period End2020-12-312019-12-312018-12-312017-12-31
Value230257264119
Percentage of DeferredTaxAssetsOperatingLossCarryforwards100.0100.0100.0100.0

us-gaap:DeferredTaxAssetsOperatingLossCarryforwardsNotSubjectToExpiration us-gaap:IncomeTaxAuthority

us-gaap:DeferredTaxAssetsOperatingLossCarryforwardsNotSubjectToExpiration

us-gaap:DomesticCountry


Deferred
Period End2020-12-31
Value625
Percentage of DeferredTaxAssetsOperatingLossCarryforwardsNotSubjectToExpiration100.0

us-gaap:DeferredTaxAssetsOperatingLossCarryforwardsSubjectToExpiration us-gaap:IncomeTaxAuthority

us-gaap:DeferredTaxAssetsOperatingLossCarryforwardsSubjectToExpiration

us-gaap:DomesticCountry


Deferred
Period End2020-12-31
Value71
Percentage of DeferredTaxAssetsOperatingLossCarryforwardsSubjectToExpiration100.0

us-gaap:DeferredTaxAssetsOther

us-gaap:DeferredTaxAssetsOther


Deferred
Period End2020-12-312019-12-312018-12-312017-12-31
Value3200000.01000000.01100000.00
Percentage of DeferredTaxAssetsOther100.0100.0100.00.0

us-gaap:DeferredTaxAssetsTaxCreditCarryforwardsResearch

us-gaap:DeferredTaxAssetsTaxCreditCarryforwardsResearch


Deferred
Period End2020-12-312019-12-312018-12-312017-12-31
Value22618815767
Percentage of DeferredTaxAssetsTaxCreditCarryforwardsResearch100.0100.0100.0100.0

us-gaap:DeferredTaxAssetsTaxCreditCarryforwardsResearch us-gaap:IncomeTaxAuthority

us-gaap:DomesticCountry


Deferred
Period End2020-12-312019-12-31
Value207171
Percentage of DeferredTaxAssetsTaxCreditCarryforwardsResearch91.991.0

us-gaap:StateAndLocalJurisdiction


Deferred
Period End2020-12-312019-12-31
Value11394
Percentage of DeferredTaxAssetsTaxCreditCarryforwardsResearch50.350.2

us-gaap:DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost

us-gaap:DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost


Deferred
Period End2020-12-312019-12-312018-12-312017-12-31
Value27291120
Percentage of DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost100.0100.0100.0100.0

us-gaap:DeferredTaxAssetsTaxDeferredExpenseReservesAndAccruals

us-gaap:DeferredTaxAssetsTaxDeferredExpenseReservesAndAccruals


Deferred
Period End2020-12-312019-12-312018-12-312017-12-31
Value34324234
Percentage of DeferredTaxAssetsTaxDeferredExpenseReservesAndAccruals100.0100.0100.0100.0

us-gaap:DeferredTaxLiabilitiesOther

us-gaap:DeferredTaxLiabilitiesOther


Deferred
Period End2020-12-312019-12-312018-12-312017-12-31
Value300000.0300000.00400000.0
Percentage of DeferredTaxLiabilitiesOther100.0100.00.0100.0

us-gaap:EmployeeRelatedLiabilitiesCurrent

us-gaap:EmployeeRelatedLiabilitiesCurrent


Employee
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value76431139371411017957368064453656
Percentage of EmployeeRelatedLiabilitiesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized us-gaap:AwardType, us-gaap:PlanName

us-gaap:EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized

us-gaap:RestrictedStock, dbx:CoFounderGrants


Employee
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value2832354046528493101119119128136145156
Percentage of EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized us-gaap:PlanName

dbx:A2018Plan


Employee
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value665538613671741600597583599447429421454500
Percentage of EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized2335.81677.91719.61653.01583.51134.4709.9626.9588.0375.4359.6328.8331.8343.5

us-gaap:FinanceLeaseLiability

us-gaap:FinanceLeaseLiability


Finance
Period End2021-06-302021-03-312020-12-312020-09-302017-12-31
Value28727027125527
Percentage of FinanceLeaseLiability100.0100.0100.0100.0100.0

us-gaap:FinanceLeaseLiabilityCurrent

us-gaap:FinanceLeaseLiabilityCurrent


Finance
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-31
Value1131059986838076
Percentage of FinanceLeaseLiabilityCurrent100.0100.0100.0100.0100.0100.0100.0

us-gaap:FinanceLeaseLiabilityNoncurrent

us-gaap:FinanceLeaseLiabilityNoncurrent


Finance
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302019-12-31
Value174165171169152138
Percentage of FinanceLeaseLiabilityNoncurrent100.0100.0100.0100.0100.0100.0

us-gaap:FinanceLeaseLiabilityPaymentsDue

us-gaap:FinanceLeaseLiabilityPaymentsDue


Finance
Period End2021-06-302021-03-312020-12-312020-09-302019-12-31
Value299282284267229
Percentage of FinanceLeaseLiabilityPaymentsDue100.0100.0100.0100.0100.0

us-gaap:FinanceLeaseLiabilityPaymentsDueNextTwelveMonths

us-gaap:FinanceLeaseLiabilityPaymentsDueNextTwelveMonths


Finance
Period End2021-06-302021-03-312020-12-312020-09-30
Value1109910696
Percentage of FinanceLeaseLiabilityPaymentsDueNextTwelveMonths100.0100.0100.0100.0

us-gaap:FinanceLeaseLiabilityPaymentsDueYearFour

us-gaap:FinanceLeaseLiabilityPaymentsDueYearFour


Finance
Period End2021-06-302021-03-312020-12-312020-09-302019-12-31
Value5.01.0241321
Percentage of FinanceLeaseLiabilityPaymentsDueYearFour100.0100.0100.0100.0100.0

us-gaap:FinanceLeaseLiabilityPaymentsDueYearThree

us-gaap:FinanceLeaseLiabilityPaymentsDueYearThree


Finance
Period End2021-06-302021-03-312020-12-312020-09-302019-12-31
Value4230594854
Percentage of FinanceLeaseLiabilityPaymentsDueYearThree100.0100.0100.0100.0100.0

us-gaap:FinanceLeaseLiabilityPaymentsDueYearTwo

us-gaap:FinanceLeaseLiabilityPaymentsDueYearTwo


Finance
Period End2021-06-302021-03-312020-12-312020-09-302019-12-31
Value7766938268
Percentage of FinanceLeaseLiabilityPaymentsDueYearTwo100.0100.0100.0100.0100.0

us-gaap:FinanceLeaseLiabilityPaymentsRemainderOfFiscalYear

us-gaap:FinanceLeaseLiabilityPaymentsRemainderOfFiscalYear


Finance
Period End2021-06-302021-03-312020-09-30
Value658526
Percentage of FinanceLeaseLiabilityPaymentsRemainderOfFiscalYear100.0100.0100.0

us-gaap:FinanceLeaseLiabilityUndiscountedExcessAmount

us-gaap:FinanceLeaseLiabilityUndiscountedExcessAmount


Finance
Period End2021-06-302021-03-312020-12-312020-09-30
Value12121312
Percentage of FinanceLeaseLiabilityUndiscountedExcessAmount100.0100.0100.0100.0

us-gaap:FinanceLeaseRightOfUseAssetAccumulatedAmortization

us-gaap:FinanceLeaseRightOfUseAssetAccumulatedAmortization


Finance
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302019-12-31
Value202177156142120124
Percentage of FinanceLeaseRightOfUseAssetAccumulatedAmortization100.0100.0100.0100.0100.0100.0

us-gaap:FinanceLeaseRightOfUseAssetBeforeAccumulatedAmortization

us-gaap:FinanceLeaseRightOfUseAssetBeforeAccumulatedAmortization


Finance
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302019-12-31
Value452418395371333321
Percentage of FinanceLeaseRightOfUseAssetBeforeAccumulatedAmortization100.0100.0100.0100.0100.0100.0

us-gaap:FinanceLeaseWeightedAverageDiscountRatePercent

us-gaap:FinanceLeaseWeightedAverageDiscountRatePercent


Finance
Period End2020-12-312019-12-31
Value3.44.3
Percentage of FinanceLeaseWeightedAverageDiscountRatePercent100.0100.0

us-gaap:FiniteLivedIntangibleAssetsAccumulatedAmortization

us-gaap:FiniteLivedIntangibleAssetsAccumulatedAmortization


Finite
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
Value555047686461575450468583
Percentage of FiniteLivedIntangibleAssetsAccumulatedAmortization100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive


Finite
Period End2020-12-31
Value1700000.0
Percentage of FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive100.0

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths


Finite
Period End2021-06-302021-03-312020-12-312020-09-30
Value12121111
Percentage of FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths100.0100.0100.0100.0

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseRemainderOfFiscalYear

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseRemainderOfFiscalYear


Finite
Period End2021-06-302021-03-312020-09-30
Value7.9123.5
Percentage of FiniteLivedIntangibleAssetsAmortizationExpenseRemainderOfFiscalYear100.0100.0100.0

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearFive

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearFive


Finite
Period End2020-12-31
Value900000.0
Percentage of FiniteLivedIntangibleAssetsAmortizationExpenseYearFive100.0

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearFour

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearFour


Finite
Period End2021-06-302021-03-312020-12-312020-09-30
Value6000000.06000000.03400000.03400000.0
Percentage of FiniteLivedIntangibleAssetsAmortizationExpenseYearFour100.0100.0100.0100.0

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearThree

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearThree


Finite
Period End2021-06-302021-03-312020-12-312020-09-30
Value7900000.07900000.07600000.07600000.0
Percentage of FiniteLivedIntangibleAssetsAmortizationExpenseYearThree100.0100.0100.0100.0

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo


Finite
Period End2021-06-302021-03-312020-12-312020-09-30
Value12128.38.3
Percentage of FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo100.0100.0100.0100.0

us-gaap:IncentiveToLessee

us-gaap:IncentiveToLessee


Incentive
Period End2020-12-31
Value10
Percentage of IncentiveToLessee100.0

us-gaap:IncomeTaxExaminationPenaltiesAndInterestAccrued

us-gaap:IncomeTaxExaminationPenaltiesAndInterestAccrued


Income
Period End2020-12-31
Value3300000.0
Percentage of IncomeTaxExaminationPenaltiesAndInterestAccrued100.0

us-gaap:IntangibleAssetsGrossExcludingGoodwill

us-gaap:IntangibleAssetsGrossExcludingGoodwill


Intangible
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
Value10310381105105105105104104104100100
Percentage of IntangibleAssetsGrossExcludingGoodwill100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IntangibleAssetsGrossExcludingGoodwill us-gaap:FiniteLivedIntangibleAssetsByMajorClass

dbx:AssembledWorkforceInAssetAcquisition


Intangible
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
Value3.03.03.0121212121212121210
Percentage of IntangibleAssetsGrossExcludingGoodwill2.92.93.712.012.012.012.012.112.112.112.510.1

us-gaap:ComputerSoftwareIntangibleAsset


Intangible
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value149.09.0202020202020201917
Percentage of IntangibleAssetsGrossExcludingGoodwill14.28.711.119.219.219.419.019.219.219.219.117.7

us-gaap:CustomerRelationships


Intangible
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value282820202020202020200.0
Percentage of IntangibleAssetsGrossExcludingGoodwill27.527.525.219.519.519.419.519.719.719.70.0

us-gaap:DevelopedTechnologyRights


Intangible
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
Value373726252525252525254750
Percentage of IntangibleAssetsGrossExcludingGoodwill36.136.132.024.524.524.424.624.024.024.046.850.7

us-gaap:OtherIntangibleAssets


Intangible
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value0.80.80.83.33.33.33.33.33.33.33.3
Percentage of IntangibleAssetsGrossExcludingGoodwill0.80.81.03.13.13.13.13.23.23.23.3

us-gaap:Patents


Intangible
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
Value9.01412131313131313131313
Percentage of IntangibleAssetsGrossExcludingGoodwill8.714.215.712.412.412.312.412.512.512.512.912.9

us-gaap:TrademarksAndTradeNames


Intangible
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value5.65.64.65.25.25.25.25.25.25.20.7
Percentage of IntangibleAssetsGrossExcludingGoodwill5.45.45.74.94.94.95.05.05.05.00.7

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths


Lessee
Period End2021-06-302021-03-312020-12-312020-09-30
Value118118122124
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths100.0100.0100.0100.0

us-gaap:LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear

us-gaap:LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear


Lessee
Period End2021-06-302021-03-312020-09-30
Value609131
Percentage of LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear100.0100.0100.0

us-gaap:LessorOperatingLeasePaymentsToBeReceived

us-gaap:LessorOperatingLeasePaymentsToBeReceived


Lessor
Period End2021-06-302021-03-312020-12-31
Value131130133
Percentage of LessorOperatingLeasePaymentsToBeReceived100.0100.0100.0

us-gaap:LessorOperatingLeasePaymentsToBeReceivedFiveYears

us-gaap:LessorOperatingLeasePaymentsToBeReceivedFiveYears


Lessor
Period End2020-12-31
Value10
Percentage of LessorOperatingLeasePaymentsToBeReceivedFiveYears100.0

us-gaap:LessorOperatingLeasePaymentsToBeReceivedFourYears

us-gaap:LessorOperatingLeasePaymentsToBeReceivedFourYears


Lessor
Period End2021-06-302021-03-312020-12-31
Value111010
Percentage of LessorOperatingLeasePaymentsToBeReceivedFourYears100.0100.0100.0

us-gaap:LessorOperatingLeasePaymentsToBeReceivedNextTwelveMonths

us-gaap:LessorOperatingLeasePaymentsToBeReceivedNextTwelveMonths


Lessor
Period End2021-06-302021-03-312020-12-31
Value201915
Percentage of LessorOperatingLeasePaymentsToBeReceivedNextTwelveMonths100.0100.0100.0

us-gaap:LessorOperatingLeasePaymentsToBeReceivedRemainderOfFiscalYear

us-gaap:LessorOperatingLeasePaymentsToBeReceivedRemainderOfFiscalYear


Lessor
Period End2021-06-302021-03-31
Value8.511
Percentage of LessorOperatingLeasePaymentsToBeReceivedRemainderOfFiscalYear100.0100.0

us-gaap:LessorOperatingLeasePaymentsToBeReceivedThereafter

us-gaap:LessorOperatingLeasePaymentsToBeReceivedThereafter


Lessor
Period End2020-12-31
Value67
Percentage of LessorOperatingLeasePaymentsToBeReceivedThereafter100.0

us-gaap:LessorOperatingLeasePaymentsToBeReceivedThreeYears

us-gaap:LessorOperatingLeasePaymentsToBeReceivedThreeYears


Lessor
Period End2021-06-302021-03-312020-12-31
Value111011
Percentage of LessorOperatingLeasePaymentsToBeReceivedThreeYears100.0100.0100.0

us-gaap:LessorOperatingLeasePaymentsToBeReceivedTwoYears

us-gaap:LessorOperatingLeasePaymentsToBeReceivedTwoYears


Lessor
Period End2021-06-302021-03-312020-12-31
Value121119
Percentage of LessorOperatingLeasePaymentsToBeReceivedTwoYears100.0100.0100.0

us-gaap:LettersOfCreditOutstandingAmount us-gaap:CreditFacility, us-gaap:DebtInstrument, us-gaap:LongtermDebtType

us-gaap:LettersOfCreditOutstandingAmount

us-gaap:RevolvingCreditFacility, dbx:CreditAndGuaranteeAgreement, us-gaap:LineOfCredit


Letters
Period End2021-06-302021-03-312020-12-312020-09-30
Value52534545
Percentage of LettersOfCreditOutstandingAmount100.0100.0100.0100.0

us-gaap:LineOfCreditFacilityRemainingBorrowingCapacity us-gaap:CreditFacility, us-gaap:DebtInstrument, us-gaap:LongtermDebtType

us-gaap:LineOfCreditFacilityRemainingBorrowingCapacity

us-gaap:RevolvingCreditFacility, dbx:CreditAndGuaranteeAgreement, us-gaap:LineOfCredit


Line
Period End2021-06-302021-03-312020-12-312020-09-30
Value447447679679
Percentage of LineOfCreditFacilityRemainingBorrowingCapacity100.0100.0100.0100.0

us-gaap:NontradeReceivablesCurrent

us-gaap:NontradeReceivablesCurrent


Nontrade
Period End2020-12-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value2.77.4143.4104644453.65.2
Percentage of NontradeReceivablesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OperatingLeaseWeightedAverageDiscountRatePercent

us-gaap:OperatingLeaseWeightedAverageDiscountRatePercent


Operating
Period End2020-12-312019-12-31
Value4.04.3
Percentage of OperatingLeaseWeightedAverageDiscountRatePercent100.0100.0

us-gaap:OperatingLossCarryforwards us-gaap:IncomeTaxAuthority

us-gaap:OperatingLossCarryforwards

us-gaap:DomesticCountry


Operating
Period End2020-12-312019-12-312018-12-31
Value697916923
Percentage of OperatingLossCarryforwards100.0100.0100.0

us-gaap:ForeignCountry


Operating
Period End2020-12-312019-12-312018-12-31
Value430244288
Percentage of OperatingLossCarryforwards61.726.631.2

us-gaap:StateAndLocalJurisdiction


Operating
Period End2020-12-312019-12-312018-12-31
Value292390403
Percentage of OperatingLossCarryforwards42.042.643.7

us-gaap:OtherCommitment

us-gaap:OtherCommitment


Other
Period End2020-12-31
Value144
Percentage of OtherCommitment100.0

us-gaap:OtherCommitmentDueAfterFifthYear

us-gaap:OtherCommitmentDueAfterFifthYear


Other
Period End2020-12-31
Value16
Percentage of OtherCommitmentDueAfterFifthYear100.0

us-gaap:OtherCommitmentDueInNextTwelveMonths

us-gaap:OtherCommitmentDueInNextTwelveMonths


Other
Period End2020-12-31
Value52
Percentage of OtherCommitmentDueInNextTwelveMonths100.0

us-gaap:OtherCommitmentDueInSecondYear

us-gaap:OtherCommitmentDueInSecondYear


Other
Period End2020-12-31
Value39
Percentage of OtherCommitmentDueInSecondYear100.0

us-gaap:OtherCommitmentDueInThirdYear

us-gaap:OtherCommitmentDueInThirdYear


Other
Period End2020-12-31
Value36
Percentage of OtherCommitmentDueInThirdYear100.0

us-gaap:RevenueRemainingPerformanceObligation

us-gaap:RevenueRemainingPerformanceObligation


Revenue
Period End2021-06-302021-03-312020-12-312020-09-30
Value715697673658
Percentage of RevenueRemainingPerformanceObligation100.0100.0100.0100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber

us-gaap:RestrictedStock


Share
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-312015-12-31
Value3026313639283029302325263033545443
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue

us-gaap:RestrictedStock


Share
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-312015-12-31
Value21.920.0719.7919.7319.6220.2520.4820.6420.5119.4418.6817.816.9816.7615.616.4117.67
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized


Share
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-312015-12-31
Value961027876758866697079575755539.01214
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant us-gaap:PlanName

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant

dbx:A2008EquityIncentivePlan2017EquityIncentivePlanand2018Plan


Share
Period End2020-12-312020-09-30
Value7876
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant100.0100.0

dbx:DropboxHelloSignAndDocSendEquityIncentivePlans


Share
Period End2021-06-302021-03-31
Value96102
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant0.00.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue


Share
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value181911101212161725219.1
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingAggregateIntrinsicValue

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingAggregateIntrinsicValue


Share
Period End2021-06-302021-03-312020-12-312020-09-30
Value6000000.06000000.06750000.05570000.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingAggregateIntrinsicValue100.0100.0100.0100.0

us-gaap:SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedNumberOfShares

us-gaap:SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedNumberOfShares


Sharebased
Period End2021-06-302021-03-312020-12-312020-09-30
Value500000.0600000.0300000.0400000.0
Percentage of SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedNumberOfShares100.0100.0100.0100.0

us-gaap:SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedWeightedAverageGrantDateFairValue

us-gaap:SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedWeightedAverageGrantDateFairValue


Sharebased
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value3.543.575.865.695.555.265.766.156.169.220024.7624.12
Percentage of SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedWeightedAverageGrantDateFairValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.0100.0100.0

us-gaap:TaxCreditCarryforwardAmount us-gaap:IncomeTaxAuthority

us-gaap:TaxCreditCarryforwardAmount

us-gaap:ForeignCountry


Tax
Period End2020-12-312019-12-31
Value0.50.7
Percentage of TaxCreditCarryforwardAmount100.0100.0

us-gaap:TaxCreditCarryforwardAmount us-gaap:TaxCreditCarryforward

dbx:StateEnterpriseTaxCreditCarryforward


Tax
Period End2020-12-312019-12-31
Value2.13.6
Percentage of TaxCreditCarryforwardAmount420.0514.3

us-gaap:UnamortizedDebtIssuanceExpense us-gaap:DebtInstrument, us-gaap:LongtermDebtType

us-gaap:UnamortizedDebtIssuanceExpense

dbx:A2026ConvertibleNotes, us-gaap:ConvertibleDebt


Unamortized
Period End2021-06-302021-03-31
Value1010
Percentage of UnamortizedDebtIssuanceExpense100.0100.0

dbx:A2028ConvertibleNotes, us-gaap:ConvertibleDebt


Unamortized
Period End2021-06-302021-03-31
Value1010
Percentage of UnamortizedDebtIssuanceExpense101.0100.0

us-gaap:UnamortizedDebtIssuanceExpense us-gaap:LongtermDebtType

us-gaap:ConvertibleDebt


Unamortized
Period End2021-06-302021-03-31
Value2021
Percentage of UnamortizedDebtIssuanceExpense201.0200.0

us-gaap:UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate

us-gaap:UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate


Unrecognized
Period End2020-12-31
Value11
Percentage of UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate100.0

Line plots across dimensions of each concept


us-gaap:CommonStockSharesIssued
us-gaap:StatementClassOfStock
(None,)
Common Stock Shares Issuedus-gaap: Statement Class Of Stock
us-gaap:CommonStockSharesOutstanding
us-gaap:StatementClassOfStock
(None,)
Common Stock Shares Outstandingus-gaap: Statement Class Of Stock
us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding
us-gaap:StatementClassOfStock
(None,)
Weighted Average Number Of Diluted Shares Outstandingus-gaap: Statement Class Of Stock
us-gaap:WeightedAverageNumberOfSharesOutstandingBasic
us-gaap:StatementClassOfStock
(None,)
Weighted Average Number Of Shares Outstanding Basicus-gaap: Statement Class Of Stock
us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount
us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecurities
(None,)
Antidilutive Securities Excluded From Computation Of Earnings Per Share Amountus-gaap: Antidilutive Securities Excluded From Computation Of Earnings Per Share By Antidilutive Securities
us-gaap:EarningsPerShareBasic
us-gaap:StatementClassOfStock
(None,)
Earnings Per Share Basicus-gaap: Statement Class Of Stock
us-gaap:EarningsPerShareDiluted
us-gaap:StatementClassOfStock
(None,)
Earnings Per Share Dilutedus-gaap: Statement Class Of Stock
TTM Greenblatt ROC
_
(None,)
T T M  Greenblatt  R O C_
us-gaap:AllocatedShareBasedCompensationExpense
us-gaap:IncomeStatementLocation
(None,)
Allocated Share Based Compensation Expenseus-gaap: Income Statement Location
us-gaap:NetIncomeLoss
us-gaap:StatementClassOfStock
(None,)
Net Income Lossus-gaap: Statement Class Of Stock
us-gaap:NetIncomeLossAvailableToCommonStockholdersDiluted
us-gaap:StatementClassOfStock
(None,)
Net Income Loss Available To Common Stockholders Dilutedus-gaap: Statement Class Of Stock
us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax
us-gaap:StatementGeographical
(None,)
Revenue From Contract With Customer Excluding Assessed Taxus-gaap: Statement Geographical
us-gaap:StockholdersEquity
us-gaap:StatementEquityComponents
(None,)
Stockholders Equityus-gaap: Statement Equity Components
us-gaap:CashAndCashEquivalentsAtCarryingValue
us-gaap:CashAndCashEquivalents
(None,)
Cash And Cash Equivalents At Carrying Valueus-gaap: Cash And Cash Equivalents
us-gaap:PropertyPlantAndEquipmentGross
us-gaap:PropertyPlantAndEquipmentByType
(None,)
Property Plant And Equipment Grossus-gaap: Property Plant And Equipment By Type
us-gaap:PropertyPlantAndEquipmentNet
us-gaap:StatementGeographical
(None,)
Property Plant And Equipment Netus-gaap: Statement Geographical
us-gaap:LongTermDebt
us-gaap:DebtInstrument, us-gaap:LongtermDebtType
(None, 'us-gaap:ConvertibleDebt')
Long Term Debtus-gaap: Debt Instrument, us-gaap: Longterm Debt Type
us-gaap:StockholdersEquity
us-gaap:StatementEquityComponents
(None,)
Stockholders Equityus-gaap: Statement Equity Components
us-gaap:NetIncomeLoss
us-gaap:StatementClassOfStock
(None,)
Net Income Lossus-gaap: Statement Class Of Stock