GILD


Line plots across dimensions of each concept
Tables

Table of contents



us-gaap:CommonStockValue

us-gaap:CommonStockSharesIssued

us-gaap:CommonStockSharesOutstanding
us-gaap:StatementEquityComponents

us-gaap:CommonStockSharesAuthorized

us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding

us-gaap:WeightedAverageNumberOfSharesOutstandingBasic

us-gaap:EarningsPerShareBasic

us-gaap:EarningsPerShareDiluted

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax
us-gaap:ProductOrService
us-gaap:ProductOrService, us-gaap:StatementGeographical

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

us-gaap:CostOfGoodsAndServicesSold

us-gaap:CostsAndExpenses

us-gaap:ResearchAndDevelopmentExpense

us-gaap:SellingGeneralAndAdministrativeExpense

us-gaap:OperatingIncomeLoss

us-gaap:InterestExpense

us-gaap:OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax

us-gaap:NonoperatingIncomeExpense

us-gaap:IncomeTaxExpenseBenefit

us-gaap:ProfitLoss

us-gaap:ComprehensiveIncomeNetOfTax

us-gaap:ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest

us-gaap:ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest

us-gaap:NetIncomeLoss
us-gaap:StatementEquityComponents

us-gaap:NetIncomeLossAttributableToNoncontrollingInterest
us-gaap:StatementEquityComponents

us-gaap:Assets

us-gaap:LiabilitiesAndStockholdersEquity

us-gaap:StockholdersEquity
us-gaap:StatementEquityComponents

us-gaap:AssetsCurrent

us-gaap:AccountsReceivableNetCurrent

us-gaap:InventoryNet

us-gaap:PrepaidExpenseAndOtherAssetsCurrent

us-gaap:PropertyPlantAndEquipmentNet

us-gaap:Goodwill

us-gaap:IntangibleAssetsNetExcludingGoodwill

us-gaap:FiniteLivedIntangibleAssetsNet
us-gaap:FiniteLivedIntangibleAssetsByMajorClass

us-gaap:OtherAssetsNoncurrent

us-gaap:LiabilitiesCurrent

us-gaap:DebtCurrent

us-gaap:LongTermDebtCurrent

us-gaap:AccountsPayableCurrent

us-gaap:OtherAccruedLiabilitiesCurrent

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

us-gaap:LongTermDebtNoncurrent

us-gaap:MinorityInterest

us-gaap:OtherLiabilitiesNoncurrent

us-gaap:StockholdersEquity
us-gaap:StatementEquityComponents

us-gaap:CommonStockValue

us-gaap:RetainedEarningsAccumulatedDeficit

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetIncomeLoss
us-gaap:StatementEquityComponents

us-gaap:ProfitLoss

us-gaap:IncreaseDecreaseInInventories

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:PaymentsToAcquirePropertyPlantAndEquipment

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:PaymentsOfDividends

us-gaap:PaymentsOfDividends

us-gaap:PaymentsForRepurchaseOfCommonStock

us-gaap:EffectiveIncomeTaxRateContinuingOperations

us-gaap:ShareBasedCompensation

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents
us-gaap:TypeOfArrangement
gild:Cashoutflowsandaccruedexpensesrelatedtocollaborativeandotherarrangements

gild:IntangibleAssetsForeignCurrencyTranslationGainLoss

gild:Revenuesrecognizedfromperformanceobligationssatisfiedinpreviousperiods
us-gaap:TypeOfArrangement
gild:UpfrontCollaborationandLicensingExpensesRelatedtoCollaborativeandOtherSimilarArrangements

gild:Upfrontandmilestoneexpenserelatedtocollaborativeandotherarrangements

gild:Upfrontandmilestonepaymentsrelatedtocollaborativeandotherarrangements

us-gaap:AdjustmentForAmortization

us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue
us-gaap:StatementEquityComponents

us-gaap:AmortizationOfIntangibleAssets

us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect

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

us-gaap:ContractWithCustomerPerformanceObligationSatisfiedInPreviousPeriod

us-gaap:DeferredIncomeTaxExpenseBenefit

us-gaap:Depreciation

us-gaap:DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet

us-gaap:Dividends
us-gaap:StatementEquityComponents

us-gaap:EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents

us-gaap:EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate

us-gaap:FiniteLivedIntangibleAssetsForeignCurrencyTranslationGainLoss
us-gaap:FiniteLivedIntangibleAssetsByMajorClass

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments

us-gaap:IncreaseDecreaseInAccountsPayable

us-gaap:IncreaseDecreaseInAccountsReceivable

us-gaap:IncreaseDecreaseInAccruedIncomeTaxesPayable

us-gaap:IncreaseDecreaseInAccruedLiabilities

us-gaap:IncreaseDecreaseInEquitySecuritiesFvNi

us-gaap:IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets

us-gaap:IncrementalCommonSharesAttributableToShareBasedPaymentArrangements
us-gaap:IndefiniteLivedIntangibleAssetsByMajorClass
us-gaap:IndefiniteLivedIntangibleAssetsForeignCurrencyTranslationGainLoss

us-gaap:OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentBeforeReclassificationAdjustmentsNetOfTax

us-gaap:OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax
us-gaap:StatementEquityComponents
us-gaap:OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax

us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax

us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAfterTax

us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAndTax

us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationAfterTax

us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationBeforeTax

us-gaap:OtherComprehensiveIncomeLossNetOfTax
us-gaap:StatementEquityComponents

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax

us-gaap:OtherNoncashIncomeExpense

us-gaap:PaymentsForProceedsFromOtherInvestingActivities

us-gaap:PaymentsToAcquireAvailableForSaleSecurities

us-gaap:PaymentsToAcquireOtherInvestments

us-gaap:ProceedsFromIssuanceOfCommonStock

us-gaap:ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities

us-gaap:ProceedsFromPaymentsForOtherFinancingActivities

us-gaap:ProceedsFromSaleOfAvailableForSaleSecurities
us-gaap:StatementEquityComponents
us-gaap:ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax

us-gaap:RepaymentsOfDebt
us-gaap:StatementEquityComponents
us-gaap:StockIssuedDuringPeriodSharesEmployeeStockPurchasePlans
us-gaap:StatementEquityComponents
us-gaap:StockIssuedDuringPeriodSharesShareBasedCompensation

us-gaap:StockIssuedDuringPeriodValueEmployeeStockPurchasePlan
us-gaap:StatementEquityComponents

us-gaap:StockIssuedDuringPeriodValueShareBasedCompensation
us-gaap:StatementEquityComponents
us-gaap:ShareRepurchaseProgram
us-gaap:StockRepurchasedAndRetiredDuringPeriodShares
us-gaap:ShareRepurchaseProgram
us-gaap:StockRepurchasedAndRetiredDuringPeriodValue
us-gaap:StatementEquityComponents
us-gaap:StockRepurchasedDuringPeriodShares

us-gaap:StockRepurchasedDuringPeriodValue
us-gaap:StatementEquityComponents

gild:Accruedgovernmentandotherrebates

gild:AllowanceforAccountsReceivableandChargebacks

gild:InventoryNetAndInventoryNoncurrent
us-gaap:LitigationCase, us-gaap:SubsequentEventType
gild:JudgmentEnhancedDamagesonPastSales
us-gaap:LitigationCase, us-gaap:SubsequentEventType
gild:JudgmentRoyaltyRateonFutureSales
us-gaap:IndefiniteLivedIntangibleAssetsByMajorClass
gild:TotalIndefiniteLivedIntangibleAssetsExcludingGoodwill

us-gaap:AccruedIncomeTaxesNoncurrent

us-gaap:AccruedLiabilitiesCurrent

us-gaap:AdditionalPaidInCapital

us-gaap:AllowanceForDoubtfulAccountsReceivable
us-gaap:FairValueByAssetClass
us-gaap:AssetsFairValueDisclosure
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency
us-gaap:FairValueByMeasurementBasis, us-gaap:FairValueByMeasurementFrequency

us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax
us-gaap:FinancialInstrument

us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax
us-gaap:FinancialInstrument

us-gaap:AvailableForSaleDebtSecuritiesAmortizedCostBasis
us-gaap:FinancialInstrument

us-gaap:AvailableForSaleSecuritiesDebtSecurities

us-gaap:ContractWithCustomerAssetNet
us-gaap:AdjustmentsForNewAccountingPronouncements
us-gaap:CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption
us-gaap:AdjustmentsForNewAccountingPronouncements, us-gaap:StatementEquityComponents

us-gaap:DebtInstrumentCarryingAmount
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementBasis

us-gaap:DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger
us-gaap:FinancialInstrument

us-gaap:DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss
us-gaap:FinancialInstrument

us-gaap:DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months
us-gaap:FinancialInstrument

us-gaap:DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss
us-gaap:FinancialInstrument

us-gaap:DebtSecuritiesAvailableForSaleUnrealizedLossPosition
us-gaap:FinancialInstrument

us-gaap:DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss
us-gaap:FinancialInstrument

us-gaap:DerivativeAssetFairValueGrossAssetIncludingNotSubjectToMasterNettingArrangement
us-gaap:BalanceSheetLocation, us-gaap:HedgingDesignation
us-gaap:HedgingDesignation

us-gaap:DerivativeAssetFairValueOffsetAgainstCollateralNetOfNotSubjectToMasterNettingArrangementPolicyElection

us-gaap:DerivativeAssetNotOffsetPolicyElectionDeduction

us-gaap:DerivativeAssets

us-gaap:DerivativeFairValueOfDerivativeAsset

us-gaap:DerivativeFairValueOfDerivativeLiability

us-gaap:DerivativeLiabilities

us-gaap:DerivativeLiabilityFairValueGrossLiabilityIncludingNotSubjectToMasterNettingArrangement
us-gaap:BalanceSheetLocation, us-gaap:HedgingDesignation
us-gaap:HedgingDesignation

us-gaap:DerivativeLiabilityFairValueOffsetAgainstCollateralNetOfNotSubjectToMasterNettingArrangementPolicyElection

us-gaap:DerivativeLiabilityNotOffsetPolicyElectionDeduction

us-gaap:DerivativeNotionalAmount

us-gaap:EmployeeRelatedLiabilitiesCurrent
us-gaap:BalanceSheetLocation, us-gaap:FairValueByAssetClass
us-gaap:EquitySecuritiesFvNi
us-gaap:FairValueByAssetClass, us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency
us-gaap:FairValueByAssetClass, us-gaap:FairValueByMeasurementBasis, us-gaap:FairValueByMeasurementFrequency

us-gaap:FiniteLivedIntangibleAssetsAccumulatedAmortization
us-gaap:FiniteLivedIntangibleAssetsByMajorClass

us-gaap:FiniteLivedIntangibleAssetsGross
us-gaap:FiniteLivedIntangibleAssetsByMajorClass
us-gaap:FairValueByAssetClass, us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency
us-gaap:ForeignCurrencyContractAssetFairValueDisclosure
us-gaap:FairValueByAssetClass, us-gaap:FairValueByMeasurementBasis, us-gaap:FairValueByMeasurementFrequency
us-gaap:FairValueByAssetClass, us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency
us-gaap:ForeignCurrencyContractsLiabilityFairValueDisclosure
us-gaap:FairValueByAssetClass, us-gaap:FairValueByMeasurementBasis, us-gaap:FairValueByMeasurementFrequency
us-gaap:IndefiniteLivedIntangibleAssetsByMajorClass
us-gaap:IndefiniteLivedIntangibleAssetsExcludingGoodwill

us-gaap:IntangibleAssetsGrossExcludingGoodwill

us-gaap:InterestReceivableCurrent

us-gaap:InventoryFinishedGoodsNetOfReserves

us-gaap:InventoryNoncurrent

us-gaap:InventoryRawMaterialsNetOfReserves

us-gaap:InventoryWorkInProcessNetOfReserves
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency
us-gaap:LiabilitiesFairValueDisclosure
us-gaap:FairValueByMeasurementBasis, us-gaap:FairValueByMeasurementFrequency
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementBasis
us-gaap:LongTermDebtFairValue
us-gaap:LitigationCase, us-gaap:Range
us-gaap:LossContingencyEstimateOfPossibleLoss

us-gaap:MarketableSecuritiesCurrent

us-gaap:MarketableSecuritiesNoncurrent
us-gaap:FairValueByAssetClass, us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency
us-gaap:OtherLiabilitiesFairValueDisclosure
us-gaap:FairValueByAssetClass, us-gaap:FairValueByMeasurementBasis, us-gaap:FairValueByMeasurementFrequency

us-gaap:PreferredStockSharesAuthorized
us-gaap:ShareRepurchaseProgram
us-gaap:StockRepurchaseProgramAuthorizedAmount1
us-gaap:ShareRepurchaseProgram, us-gaap:SubsequentEventType

us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
us-gaap:StatementEquityComponents

Tables

  2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-09-302009-06-302009-03-31
us-gaap:CommonStockValue ▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄█▄█▄▄▄▄▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁111111111111111111121211110000000000000000NANANA
us-gaap:CommonStockSharesIssued ▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇████████████▄▄▄▄▄▅▁▅▅▅▅▅1254126612661267127412821294129613001308130713061307131013221331134814221449147314771499151315261537153415341528152415197577567587537567760801815859901899NANANA
us-gaap:CommonStockSharesOutstanding ▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇████████████▄▄▄▄▄▅▁▅▅▅▅▅1254126612661267127412821294129613001308130713061307131013221331134814221449147314771499151315261537153415341528152415197577567587537567760801815859901899NANANA
 us-gaap:CommonStockSharesOutstanding us-gaap:StatementEquityComponents us-gaap:CommonStock▁▁▁▁▂▂▂▂▂▃▃▃▃▃▃▃▄▆▇█12541266126612671274128212941296130013081307130613071310132213311348142214491473NA1499NANANA1534NANANANANANANANANANANANANANANA899NANANA
us-gaap:CommonStockSharesAuthorized ████████████████████████████▄▄▄▄▄▄▁▄▁▄▄▄▄▄560056005600560056005600560056005600560056005600560056005600560056005600560056005600560056005600560056005600560028002800280028002800280022800228002800280028002800NANANA
us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding 1270NA126712771283NA130713081320NA131913171320NA133913551412NA150315401569NA163616641679NA169116941665NA792780777NA781800811NA847898928NA932934942
us-gaap:WeightedAverageNumberOfSharesOutstandingBasic 1262NA126712701276NA129612981307NA130613071308NA132213351383NA146314721488NA151315321536NA153215261521NA757756756NA767784796NA833881901NA903905909
us-gaap:EarningsPerShareBasic ▆▇▃▆▆▄▆▆▆▁▇▇▇▇▇▇▇████▇▆▇▆▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅1.232.13-0.921.481.550.01.621.41.18-2.962.082.352.072.362.522.622.583.263.143.052.912.321.82.391.450.520.510.510.470.50.890.940.580.880.970.950.820.780.850.810.950.890.750.630.65
us-gaap:EarningsPerShareDiluted ▆▇▃▆▆▄▆▆▆▁▇▇▇▇▇▇▇████▇▆▇▆▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅1.222.12-0.921.471.540.01.61.391.17-2.962.062.332.052.342.492.582.533.183.062.922.762.181.672.21.330.470.470.460.430.470.850.910.570.870.950.930.80.760.830.790.920.870.720.610.63
  2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-09-302009-06-302009-03-31
us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax ▅▅▅▅▅▅▅▅▅▅▆▇▆▇▇▇▇███▇▇▆▆▄▃▂▂▂▂▂▂▂▂▂▂▁▁▁▁▂▂▁▁▁554858795604568552815795559656485088594965127141650573207500777677948506829582447594731460416534499831192782276725312588242624052282220021212137192619981937192720852032180116471530
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ProductOrService gild:HCVProductsSofosbuvirVelpatasvir█▂▅▄▃▁▃▄▆564465516493491453477500536NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ProductOrService gild:HIVProductsBiktarvy█▇▆▆▄▃▂▂▁169315701259111679357838618535NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ProductOrService gild:HIVProductsGenvoya▁▃▄▄▄█▇▇▆82495897898010151206117611601082NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ProductOrService us-gaap:Product▃▄▃▃▂▃▃▃▁▄▆█546757965516560752005681545555405001583764027046NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ProductOrService,us-gaap:StatementGeographical gild:HIVProductsBiktarvy,country:US██▆▆▅▄▃▂▁141213571106102373955137518335NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ProductOrService,us-gaap:StatementGeographical gild:HIVProductsGenvoya,country:US▁▄▄▃▃█▇▇▆612762761733728953921904853NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ProductOrService,us-gaap:StatementGeographical us-gaap:Product,country:US▃▆▄▄▂▆▄▄▁▄▆█398945164199405437964470413140693527413545424982NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ProductOrService,us-gaap:StatementGeographical us-gaap:Product,srt:Europe▂▁▁▄▂▁▂▃▃▅▆█927840804104188281387310051005114911971399NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:Revenues ▅▅▅▅▅▅▅▅▅▅▆▇▆▇▇▇▇███▇▇▆▆▄▃▂▂▂▂▂▂▂▂▂▂▁▁▁▁▂▂▁▁▁554858795604568552815795559656485088594965127141650573207500777677948506829582447594731460416534499831192782276725312588242624052282220021212137192619981937192720852032180116471530
 us-gaap:Revenues us-gaap:ProductOrService us-gaap:Product5467NANANA5200NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:Revenues us-gaap:StatementGeographical country:US▃▆▄▄▂▆▄▄▁▄▆█400645354219407338184488415140833547415845635004NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:Revenues us-gaap:StatementGeographical gild:OtherInternational▅▂▄▄▄▁▂▃▃▅██567441514513525417470481484568678679NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:Revenues us-gaap:StatementGeographical srt:Europe▂▁▁▄▂▁▂▄▃▅▆█975903871109993889097510841057122312711458NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:CostOfGoodsAndServicesSold ▁█▂▁▁▇▂▃▁▄▂▃9691683103510009571570108611961001125610321126NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:CostsAndExpenses ▃▅█▃▂▅▂▃▂▃▂▂▂▃▃▃▃▂▂▂▁▂▂▁▁3146478670773255304446512973336829353658270028872738327531013238314328852710262822232983256221221956NA163416131506NA138213461482NA111711201024NA958934924NA906886722
us-gaap:ResearchAndDevelopmentExpense ▂▃█▂▂▃▂▂▂▂▁▁▂▂▂▂▂▁▁▁▁▂▁▁▁1101189949901160105719509391192937115078986493112081141148412657577438186961044630583594NA546523497NA465396458NANANANANANANANANANANANA
us-gaap:SellingGeneralAndAdministrativeExpense ▆█▆▆▆▇▅▅▅█▄▄▄▅▄▄▂▆▅▄▂▄▅▂▁10761204105210951030113194898099712528798978509928318906851066903812645876944613548NA406404374NA319332443NA295304295NA250248265NA227261203
us-gaap:OperatingIncomeLoss ▅▄▁▅▅▄▅▅▅▅▆▇▆▆▇▇▇████▇▆▇▅24021093-14732430223711442623228021532291381242543767404543994538465156215585561653714330347944123042NA114711531025NA10431059800NA10031016901NA9799921161NA894761808
us-gaap:InterestExpense ▆▆▇▆▇▇▇▇███▇▇▇▆▆▆▆▄▃▃▃▂▂▁24124325024825425726426629029729126926126524222723023016514015313010310276NA737881NA898897NA434641NA331716NA171816
us-gaap:OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax ▂▃▂▃▃▂▃▂▃▃▃▄▁█▂▃▃▃▃▃▃▃▃▃▃-3925-27-1321-211-2574-429-76216-50921333-10-5-1015NA211-8NA5-24NA-3-4NANANANANANANANANA
us-gaap:NonoperatingIncomeExpense ▁█▃▃▄▃▄▂▃▃▃▃▃▃▃▂▂▂▂▂▂▂▂▂▂-15810512222283671293057217013215013011114011988814652352129-5-3-17NA50-3NA-3-1-34NA141113NA151815NA14124
us-gaap:IncomeTaxExpenseBenefit ▂▁▁▂▂▃▂▂▂█▃▃▃▃▃▃▃▃▃▃▃▃▂▂▃465-788-3335353821013565267494596295910469188219519029357528801014907767646656725NA294307222NA280263231NA237240227NA258284307NA220186209
us-gaap:ProfitLoss ▅▆▃▆▆▄▆▆▅▁▆▇▆▇▇▇▇████▇▆▇▆▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅15382689-1168187519683209918191539-3836271230692699309933253497356746854592449743323462272436502222786785767717758671711441661737742647626702709852799670569586
us-gaap:ComprehensiveIncomeNetOfTax ▅▆▃▆▆▄▆▆▅▁▇▇▆▇▇▇▇████▇▇▇▆15122664-11501852202547213119891496-3949284729332684349432683615331446044520420045713613294637092256NA716782788NA579796417NA855710515NA520815941NA607480NA
us-gaap:ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest ▃▃▄▄▃▄▄▄▄█▃▄▄▃▄▄▄▄▃▅▄▁▃▄▄▄▄▄▄-13-7-3-5-7022129-6-4-3-9-5012-85-1-25-7-5-4-4-3-4-4NANANA-4NA-3-3-3NA-22-2NA-22NA
us-gaap:ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest ▅▆▃▆▆▄▆▆▅▁▇▇▆▇▇▇▇████▇▇▇▆14992657-11531847201847213319911497-3920284129292681348532633615331546064512420545703588293937042251NA712777784NA574802417NA858714519NA522818944NA610483NA
us-gaap:NetIncomeLoss ▅▆▃▆▆▄▆▆▅▁▆▇▆▇▇▇▇████▇▆▇▆▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅15512696-1165188019753209718171538-3865271830732702310833303497356646834600449243333487273136552227791788772722762675706437665741746651629704712854802673571589
 us-gaap:NetIncomeLoss us-gaap:StatementEquityComponents us-gaap:RetainedEarnings1551NANANA1975NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:NetIncomeLossAttributableToNoncontrollingInterest ▃▃▄▄▃▄▄▄▄█▃▄▄▃▄▄▄▄▃▅▄▁▃▄▄-13-7-3-5-7022129-6-4-3-9-5012-85-1-25-7-5-4NA-3-4-4NA-4-54NA-3-3-3NA-2-2-2NA-2-2-2
  2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-09-302009-06-302009-03-31
us-gaap:Assets ▇▇▇▇▇▇▇▇▇█▇▇▇▆▆▆▅▆▆▄▄▄▃▃▃▂▂▂▂▂▂▂▂▂▁▁▁▁▁▁▁▁59741616275914663210628376367564305653556538170283646626026357701569775660949980477655183950637391673832134664288443120628077224962246822624222112123920963205011995017303126391269412987115921145510496106959698NANANA
us-gaap:LiabilitiesAndStockholdersEquity ▇▇▇▇▇▇▇▇▇█▇▇▇▆▆▆▅▆▆▄▄▄▃▃▃▂▂▂▂▂▂▂▂▂▁▁▁▁▁▁▁▁59741616275914663210628376367564305653556538170283646626026357701569775660949980477655183950637391673832134664288443120628077224962246822624222112123920963205011995017303126391269412987115921145510496106959698NANANA
us-gaap:StockholdersEquity ▇▇▆▇▇▇▇▇▆▆█▇▆▆▅▅▄▆▅▅▅▅▄▅▄▃▃▃▃▂▂▂▂▁▁▁▁▁▁▁▂▁22067225252060422616219512138722861216722059120442248452267720441188871686815536133981853417414162871718015426135661609013387113691088311092101529309860380027313673861166046594658635706656273416367NANANA
  2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-09-302009-06-302009-03-31
us-gaap:AssetsCurrent ▆▇▆████▇▇▇█▆▅▅▅▄▄▆▆▄▄▄▃▃▃▂▁▂▁▁▁▁▁▃▁▁▁▁▁▁▁▁26950302962836133727340243583634918327283025831823353172859221424204452142518353192672476325910180932006217714125621549912970727369687072666361565880584458261391861476219685157086031570951244812NANANA
us-gaap:AccountsReceivableNetCurrent ▅▄▄▄▄▄▄▄▄▅▅▆▅▆▆▇███▇▆▆▃▄▄▂▂▂▂▂▂▁▂▂▂▂▂▁▁▁▁▁390735823315339632833327346535413775385141224478403445145075575261635854610553314835463528503436323621001971189519451751176617022163195118671938180116211670148214911389NANANA
us-gaap:InventoryNet ▂▂▁▁▂▁▁▁▁▁▃▄▅▅▇▇▇▇▇▇▇▄▇███▇▇▆▆▅▅▄▄▄▄▄▃▃▄▃▂98692288288489881481685988580111441408147415871900186218801955198820391908138619092068214020551946193517991744161716031418138913371321130412031273135612231051NANANA
us-gaap:PrepaidExpenseAndOtherAssetsCurrent ▂▃▂▇▅▄▇█▃▄▄▄▅▃▃▁▆▃▁1272144013082264193916062171241116001661166416101801159214221152207515191209NANA1057NANANANANANANA186NANANA222NANANANANANANANANANANA
  2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-09-302009-06-302009-03-31
us-gaap:PropertyPlantAndEquipmentNet ███▇▇▇▇▆▆▆▅▅▅▅▅▄▄▄▄▃▃▃▂▂▂▂▂▂▂▂▁▁▁▁▁▁▁▁▁▁▁▁456445024377424941164006379136593415329531003012292228652714259924312276214318991765167415091380130311661133113511251100856811782774761721703701692695695699NANANA
us-gaap:Goodwill ██████████▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▁▁▁411741174117411741174117411741244159415911721172117211721172117211721172117211721172117211711171117111691188118811881060107810781078100410041004754532532462NA462NANANA
us-gaap:IntangibleAssetsNetExcludingGoodwill ▆▇▇▇▇▇████▄▄▄▄▅▅▅▅▅▅▅▅▅▆▆▆▆▆▆▆▆▆▆▁135021378614864151521543815738163141649616803171008342855187618971938697139923102471045410660108671107311306115081170711900120341205612077117361173511751117671062NANANANANANANANANANANA
us-gaap:FiniteLivedIntangibleAssetsNet ▇▇▇▇██████▅▅▅▅▅▅▆▆▆▆▆▆▆▆▆▆▁▁▁▁▁▁12262125441282413109133961369413447137461405314350834285518761897191859395960598151002210228104351064110874109261112611325685707728750749764NA796NANANA863878893NA923NANANA
 us-gaap:FiniteLivedIntangibleAssetsNet us-gaap:FiniteLivedIntangibleAssetsByMajorClass gild:AxicabtageneciloleucelDLBCL▁▂▃▃▄▅▆▆▇█5353543955255612569857845870595660426128NANANA0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:FiniteLivedIntangibleAssetsNet us-gaap:FiniteLivedIntangibleAssetsByMajorClass gild:IntangibleAssetSofosbuvir▁▂▂▃▃▄▄▅▅▆▆▇▇█62926467664268176991716673417515769078658040821583908564NANANA9264NANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:OtherAssetsNoncurrent ██▆▄▄▃▄▃▃▄▃▃▃▃▂▂▂▂▂▂▁▂▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁707974385232291429212555278726092642272226112319231222141647148112941056858682583731267212204195139143149159170171169160131119125181111919785NANANA
  2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-09-302009-06-302009-03-31
us-gaap:LiabilitiesCurrent ▆▇▇▆▆▇▇▇▇█▇▆▆▆█▇▇▇▆▆▅▄▄▄▄▄▃▃▃▃▃▃▃▁▁▁▂▁▂▂▁▁88799759956789619397106051011610912106701163595978492828292191107310444109109891936089257428576160546227591463254895493742904270480249864187251422242310276824642590310518871871NANANA
us-gaap:DebtCurrent ▂▅▅▂▅▇▇█▅▇▁19992499249819992498274827472998249727471747NANA070070017459833313524424831477157218712697145714889421169173019721351117653646632112475NANANA
us-gaap:LongTermDebtCurrent ▆▇▇▆▇███▇█▆▃▃▃▄▄▅▅▄▄▄▄▆▆▆█▆▁▂▁▆▆▅▃1999249924981999249827482746299824972747174700070070095398333135244248314771572187126961457-1488-942-11691730197213500NANANANANANANANANANANA
us-gaap:AccountsPayableCurrent ▁▂▁▁▁▂▁▁▂▃▂▃▄▅▄▅▄▅▆█▄▄▅▅▆▆▆▇▆▆▆▇▆▅▄▅▄▃▄▄▄▃5907136326175777905806237118146968199441206105211229451178123915711011955118211621234125513501390135613271319136713391206106311029818039501066949810NANANA
us-gaap:OtherAccruedLiabilitiesCurrent ▆███▆▇▆▆▆▇▆▆▅▅█▆▇▆▅▅▅▅▄▅▄▃▂▂▂▁▁18082188211821521838202918181856171119181744182915891621208416571936184116231510144014521224144312221023816831819674647NANA471NANANANANANANANANANANA
us-gaap:AccruedIncomeTaxesCurrent █▁645287NANANA190171766713NANANA186390NA516515935698105439715210103719131711144033521382438167NANANA
  2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-09-302009-06-302009-03-31
 us-gaap:LongTermDebt us-gaap:DebtInstrument,us-gaap:LongtermDebtType gild:SeniorUnsecuredNotesDueApril2021,us-gaap:UnsecuredDebt█▆▆▆▃▃▁▁999998998998997997996996NA995NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:LongTermDebt us-gaap:DebtInstrument,us-gaap:LongtermDebtType gild:SeniorUnsecuredNotesDueDecember2021,us-gaap:UnsecuredDebt████▁▁▁▁12481248124812481247124712471247NA1246NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:LongTermDebt us-gaap:DebtInstrument,us-gaap:LongtermDebtType gild:SeniorUnsecuredNotesDueInFebruary2020,us-gaap:UnsecuredDebt▁███████0500500500499499499499NA499NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:LongTermDebt us-gaap:DebtInstrument,us-gaap:LongtermDebtType gild:SeniorUnsecuredNotesDueinApril2024,us-gaap:UnsecuredDebt███▄▄▄▁▁17451745174517441744174417431743NA1742NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
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 us-gaap:LongTermDebt us-gaap:DebtInstrument,us-gaap:LongtermDebtType gild:SeniorUnsecuredNotesDueinMarch2027,us-gaap:UnsecuredDebt███████▁12451245124512451245124512451244NA1244NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
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 us-gaap:LongTermDebt us-gaap:DebtInstrument,us-gaap:LongtermDebtType gild:SeniorUnsecuredNotesDueinSeptember2022,us-gaap:UnsecuredDebt███▁▁▁▁▁998998998997997997997997NA996NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
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 us-gaap:LongTermDebt us-gaap:DebtInstrument,us-gaap:LongtermDebtType gild:SeniorUnsecuredNotesDueinSeptember2036,us-gaap:UnsecuredDebt████▁▁▁▁741741741741740740740740NA740NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:LongTermDebtNoncurrent ▆▆▆▆▆▆▆▇▇█▇▇▇▇▇▆▅▅▆▃▃▃▂▂▂▁▁▁▂▂▂▂▂▂22098220942209024084240802457424570260622655730795275152629626321263462637121427210772119521894119221192111921793379327932393858565849705470547040712680777605NANANANANANANANANANANA
us-gaap:MinorityInterest ▂▂▂▂▂▂▂▁▁▁▅▅▆▆▆▇█▇▇▅▅▅▄▅▄▅▄▃▃▃▂▁▁▂▂▂▃▄▂▂▂▂1121251321351401471466260594094144764764925796215795303474083932973383143753082512402411468150128116164229258172137160138NANANA
us-gaap:OtherLiabilitiesNoncurrent ▅▅▅█▇▆▄▄▄▃▂▃▂▂▂▃▃▃▃▄▄▃▃▂▂▂▂▂▂▂▂▂▂▂▂▂▁▁▁▁▁▁9901009901157714601040594646671558259442333296184467374395378760619535482174174156261224213228221155153147138156492747232735NANANA
  2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-09-302009-06-302009-03-31
us-gaap:StockholdersEquity ▇▇▆▇▇▇▇▇▆▆█▇▆▆▅▅▄▆▅▅▅▅▄▅▄▃▃▃▃▂▂▂▂▁▁▁▁▁▁▁▂▁22067225252060422616219512138722861216722059120442248452267720441188871686815536133981853417414162871718015426135661609013387113691088311092101529309860380027313673861166046594658635706656273416367NANANA
us-gaap:CommonStockValue ▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄█▄█▄▄▄▄▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁111111111111111111121211110000000000000000NANANA
us-gaap:RetainedEarningsAccumulatedDeficit ▆▇▆▇▇▇▇▇▇▇█▇▇▆▆▅▅▆▆▆▅▅▄▄▃▃▂▂▂▂▂▁▁▁▁▁▁▁▁▁▁▁187091938817616198291932619024207061982519196190122368921823195641815416654149491304518001169611603813916127321124710199773461055735506543013704313926632178177613211395132011831122183126881995NANANA
us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax ▃▄▄▄▄▃▃▃▁▄▅▄▅▅▂▂▁▄▄▅█▆▄▂▂▁▂▃▃▂▃▄▃▃▃▁▂▃▃▅▃▃468511710213080362-170165249120260278-108-46-16488167247539301173-41-95-124-423020-45281243358-15-133-10130718983-5NANANA
  2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-09-302009-06-302009-03-31
us-gaap:NetCashProvidedByUsedInOperatingActivities ▁▃▃▂▁▂▂▁▂▃▃▄▃▄▆▇▅▇▅██▄▅▆▁1436258028992221144423452212157322702753269435262925348643304940391348744096565857013020404441851568NANANA672NANANA452NANANA820NANANA670NANANA641
us-gaap:NetCashProvidedByUsedInInvestingActivities ▅▆▅▃▆▇▇██▁▅▄▆▄▄▄▅▄▄▄▅▅▅▅▆-344431-2095-6042-1112735202552414354-10016-2114-4246307-2675-3917-3284-2109-2438-4186-3552-2299-404-770-487-160NANANA-407NANANA-10743NANANA-300NANANA-1068NANANA-328
us-gaap:NetCashProvidedByUsedInFinancingActivities ▄▄▄▄▄▄▄▄▂▆▆▄▄▄▆▄▁▃█▂▄▅▂▄▆-2611-896-2515-1857-2366-1670-2901-1152-659533472170-880-1244-22952860-1516-8396-35446644-5341-27221233-5771-13712884NANANA-199NANANA1855NANANA485NANANA16NANANA-145
  2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-09-302009-06-302009-03-31
us-gaap:NetCashProvidedByUsedInOperatingActivities ▁▃▃▂▁▂▂▁▂▃▃▄▃▄▆▇▅▇▅██▄▅▆▁1436258028992221144423452212157322702753269435262925348643304940391348744096565857013020404441851568NANANA672NANANA452NANANA820NANANA670NANANA641
us-gaap:NetIncomeLoss ▅▆▃▆▆▄▆▆▅▁▆▇▆▇▇▇▇████▇▆▇▆▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅15512696-1165188019753209718171538-3865271830732702310833303497356646834600449243333487273136552227791788772722762675706437665741746651629704712854802673571589
 us-gaap:NetIncomeLoss us-gaap:StatementEquityComponents us-gaap:RetainedEarnings1551NANANA1975NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:ProfitLoss ▅▆▃▆▆▄▆▆▅▁▆▇▆▇▇▇▇████▇▆▇▆▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅15382689-1168187519683209918191539-3836271230692699309933253497356746854592449743323462272436502222786785767717758671711441661737742647626702709852799670569586
us-gaap:IncreaseDecreaseInInventories ▃▄▃▃▃▄▅▃▃▅▄▃▃▆▅▄▃▆▃▆█▂▁▂▄-156023-31511915720141746595214177831419625264370-42-121-6384NANANA57NANANA26NANANA97NANANA174NANANA11
  2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-09-302009-06-302009-03-31
us-gaap:NetCashProvidedByUsedInInvestingActivities ▅▆▅▃▆▇▇██▁▅▄▆▄▄▄▅▄▄▄▅▅▅▅▆-344431-2095-6042-1112735202552414354-10016-2114-4246307-2675-3917-3284-2109-2438-4186-3552-2299-404-770-487-160NANANA-407NANANA-10743NANANA-300NANANA-1068NANANA-328
us-gaap:PaymentsToAcquirePropertyPlantAndEquipment 171NA200185237NA167297212NA129123118NA198204177NANANANANANANANANANANANANANANANANANANANANANANANANANANANA
  2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-09-302009-06-302009-03-31
us-gaap:NetCashProvidedByUsedInFinancingActivities ▄▄▄▄▄▄▄▄▂▆▆▄▄▄▆▄▁▃█▂▄▅▂▄▆-2611-896-2515-1857-2366-1670-2901-1152-659533472170-880-1244-22952860-1516-8396-35446644-5341-27221233-5771-13712884NANANA-199NANANA1855NANANA485NANANA16NANANA-145
us-gaap:PaymentsOfDividends █▇▇▇█▇▇▇▇▆▆▆▇▆▆▆▆▆▆▆▁▁▁874801804800817736742740753682682680687619623626587614627633000NANANANANANANANANANANANANANANANANANANANANANA
us-gaap:PaymentsOfDividends █▇▇▇█▇▇▇▇▆▆▆▇▆▆▆▆▆▆▆▁▁▁874801804800817736742740753682682680687619623626587614627633000NANANANANANANANANANANANANANANANANANANANANANA
us-gaap:PaymentsForRepurchaseOfCommonStock ▂▁▁▁▂▂▁▁▂▁▁▁▁▂▂▂█▄▄▂▄▃▂▂▁132810522258883496244945010391061531305651000100010018000305130509003001200017001200450NANANA82NANANA20NANANA548NANANA162NANANA230
  2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-09-302009-06-302009-03-31

Common Stock Value

us-gaap:CommonStockValue



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312008-12-31
Value1111111111111111111212111100000000000000000
Percentage of CommonStockValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Common Stock Par Or Stated Value Per Share

Common Stock Shares Issued

us-gaap:CommonStockSharesIssued



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312008-12-31
Value1254126612661267127412821294129613001308130713061307131013221331134814221449147314771499151315261537153415341528152415197577567587537567760801815859901899909
Percentage of CommonStockSharesIssued100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Common Stock Shares Outstanding

us-gaap:CommonStockSharesOutstanding



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312008-12-31
Value1254126612661267127412821294129613001308130713061307131013221331134814221449147314771499151315261537153415341528152415197577567587537567760801815859901899909
Percentage of CommonStockSharesOutstanding100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StatementEquityComponents

us-gaap:CommonStock



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302014-12-312013-12-312009-12-312008-12-312007-12-312006-12-31
Value1254126612661267127412821294129613001308130713061307131013221331134814221449147314991534899909932922
Percentage of CommonStockSharesOutstanding100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.0

Common Stock Shares Authorized

us-gaap:CommonStockSharesAuthorized



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312008-12-31
Value5600560056005600560056005600560056005600560056005600560056005600560056005600560056005600560056005600560056005600280028002800280028002800228002280028002800280028002800
Percentage of CommonStockSharesAuthorized100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Weighted Average Number Of Diluted Shares Outstanding

us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-312009-09-302009-06-302009-03-31
Value1270126712771283130713081320131913171320133913551412150315401569163616641679169116941665792780777781800811847898928932934942
Percentage of WeightedAverageNumberOfDilutedSharesOutstanding100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Weighted Average Number Of Shares Outstanding Basic

us-gaap:WeightedAverageNumberOfSharesOutstandingBasic



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-312009-09-302009-06-302009-03-31
Value1262126712701276129612981307130613071308132213351383146314721488151315321536153215261521757756756767784796833881901903905909
Percentage of WeightedAverageNumberOfSharesOutstandingBasic100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Earnings Per Share Basic

us-gaap:EarningsPerShareBasic



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-09-302009-06-302009-03-31
Value1.232.13-0.921.481.550.01.621.41.18-2.962.082.352.072.362.522.622.583.263.143.052.912.321.82.391.450.520.510.510.470.50.890.940.580.880.970.950.820.780.850.810.950.890.750.630.65
Percentage of EarningsPerShareBasic100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Earnings Per Share Diluted

us-gaap:EarningsPerShareDiluted



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-09-302009-06-302009-03-31
Value1.222.12-0.921.471.540.01.61.391.17-2.962.062.332.052.342.492.582.533.183.062.922.762.181.672.21.330.470.470.460.430.470.850.910.570.870.950.930.80.760.830.790.920.870.720.610.63
Percentage of EarningsPerShareDiluted100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Revenue From Contract With Customer Excluding Assessed Tax

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-09-302009-06-302009-03-31
Value554858795604568552815795559656485088594965127141650573207500777677948506829582447594731460416534499831192782276725312588242624052282220021212137192619981937192720852032180116471530
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProductOrService

gild:HCVProductsLedipasvirSofosbuvir



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value112101124193225232311331348
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax2.01.72.23.44.34.05.65.96.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax2.01.72.23.44.34.05.65.96.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax gild:HCVProductsLedipasvirSofosbuvir100.0100.0100.0100.0100.0100.0100.0100.0100.0

gild:HCVProductsSofosbuvirVelpatasvir



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value564465516493491453477500536
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax10.27.99.28.79.37.88.58.910.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax10.27.99.28.79.37.88.58.910.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax gild:HCVProductsSofosbuvirVelpatasvir100.0100.0100.0100.0100.0100.0100.0100.0100.0

gild:HCVProductsVosevi



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value485663756377103109107
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.91.01.11.31.21.31.81.92.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.91.01.11.31.21.31.81.92.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax gild:HCVProductsVosevi100.0100.0100.0100.0100.0100.0100.0100.0100.0

gild:HIVProductsAtripla



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value95128149152171285258349314
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.72.22.72.73.24.94.66.26.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.72.22.72.73.24.94.66.26.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax gild:HIVProductsAtripla100.0100.0100.0100.0100.0100.0100.0100.0100.0

gild:HIVProductsBiktarvy



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value169315701259111679357838618535
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax30.526.722.519.615.010.06.93.30.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax30.526.722.519.615.010.06.93.30.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax gild:HIVProductsBiktarvy100.0100.0100.0100.0100.0100.0100.0100.0100.0

gild:HIVProductsCompleraEviplera



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value767593123115125139199190
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.41.31.72.22.22.22.53.53.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.41.31.72.22.22.22.53.53.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax gild:HIVProductsCompleraEviplera100.0100.0100.0100.0100.0100.0100.0100.0100.0

gild:HIVProductsDescovy



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value458437363358342411406403361
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax8.37.46.56.36.57.17.37.17.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax8.37.46.56.36.57.17.37.17.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax gild:HIVProductsDescovy100.0100.0100.0100.0100.0100.0100.0100.0100.0

gild:HIVProductsGenvoya



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value82495897898010151206117611601082
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax14.916.317.517.219.220.821.020.521.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax14.916.317.517.219.220.821.020.521.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax gild:HIVProductsGenvoya100.0100.0100.0100.0100.0100.0100.0100.0100.0

gild:HIVProductsOdefsey



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value409435436387397448423385342
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax7.47.47.86.87.57.77.66.86.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax7.47.47.86.87.57.77.66.86.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax gild:HIVProductsOdefsey100.0100.0100.0100.0100.0100.0100.0100.0100.0

gild:HIVProductsStribild



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value53719410896137146187174
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.01.21.71.91.82.42.63.33.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.01.21.71.91.82.42.63.33.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax gild:HIVProductsStribild100.0100.0100.0100.0100.0100.0100.0100.0100.0

gild:HIVProductsTruvada



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value406768721718606823757765652
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax7.313.112.912.611.514.213.513.512.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax7.313.112.912.611.514.213.513.512.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax gild:HIVProductsTruvada100.0100.0100.0100.0100.0100.0100.0100.0100.0

gild:OtherProductsAmBisome



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value1191109910593108102103107909292
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax2.11.91.81.81.81.91.81.82.11.51.41.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax2.11.91.81.81.81.91.81.82.11.51.41.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax gild:OtherProductsAmBisome100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

gild:OtherProductsLetairis



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value8396121204197254241244204233213230
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.51.62.23.63.74.44.34.34.03.93.33.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.51.62.23.63.74.44.34.34.03.93.33.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax gild:OtherProductsLetairis100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

gild:OtherProductsOther



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value635825140623564115106177273368
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.11.00.42.51.20.61.12.02.13.04.25.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.11.00.42.51.20.61.12.02.13.04.25.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax gild:OtherProductsOther100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

gild:OtherProductsRanexa



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value8113119155177178208195200164200
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.10.20.60.32.93.13.23.73.83.42.52.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.10.20.60.32.93.13.23.73.83.42.52.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax gild:OtherProductsRanexa100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

gild:OtherProductsVemlidy



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value136137134116101100877658
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax2.52.32.42.01.91.71.61.31.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax2.52.32.42.01.91.71.61.31.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax gild:OtherProductsVemlidy100.0100.0100.0100.0100.0100.0100.0100.0100.0

gild:OtherProductsViread



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value403957757258708297
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.70.71.01.31.41.01.31.51.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.70.71.01.31.41.01.31.51.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax gild:OtherProductsViread100.0100.0100.0100.0100.0100.0100.0100.0100.0

gild:OtherProductsYescarta



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value1401221181209681756840700
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax2.52.12.12.11.81.41.31.20.80.10.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax2.52.12.12.11.81.41.31.20.80.10.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax gild:OtherProductsYescarta100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.0

gild:OtherProductsZydelig



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value202426262741203933394035
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.40.40.50.50.50.70.40.70.60.70.60.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.40.40.50.50.50.70.40.70.60.70.60.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax gild:OtherProductsZydelig100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

gild:ProductsOtherHIV



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value8105151715141913171511
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.10.20.10.30.30.30.30.30.30.30.20.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.10.20.10.30.30.30.30.30.30.30.20.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax gild:ProductsOtherHIV100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

gild:ProductsRevenueShareSymtuza



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value11212510484663722137000
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax2.02.11.91.51.20.60.40.20.10.00.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax2.02.11.91.51.20.60.40.20.10.00.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax gild:ProductsRevenueShareSymtuza100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.0

us-gaap:Product



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value546757965516560752005681545555405001583764027046
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax98.598.698.498.698.598.097.598.198.398.198.398.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax98.598.698.498.698.598.097.598.198.398.198.398.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:Product100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProductOrService, us-gaap:StatementGeographical

gild:HCVProductsLedipasvirSofosbuvir, country:US



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value53555486117153185230234
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.00.91.01.52.22.63.34.14.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.00.91.01.52.22.63.34.14.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax gild:HCVProductsLedipasvirSofosbuvir country:US100.0100.0100.0100.0100.0100.0100.0100.0100.0

gild:HCVProductsLedipasvirSofosbuvir, gild:OtherInternational



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value483856858151887958
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.90.61.01.51.50.91.61.41.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.90.61.01.51.50.91.61.41.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax gild:HCVProductsLedipasvirSofosbuvir gild:OtherInternational100.0100.0100.0100.0100.0100.0100.0100.0100.0

gild:HCVProductsLedipasvirSofosbuvir, srt:Europe



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value11814222728382256
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.20.10.20.40.50.50.70.41.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.20.10.20.40.50.50.70.41.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax gild:HCVProductsLedipasvirSofosbuvir srt:Europe100.0100.0100.0100.0100.0100.0100.0100.0100.0

gild:HCVProductsSofosbuvirVelpatasvir, country:US



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value311240282219230201225239269
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax5.64.15.03.94.43.54.04.25.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax5.64.15.03.94.43.54.04.25.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax gild:HCVProductsSofosbuvirVelpatasvir country:US100.0100.0100.0100.0100.0100.0100.0100.0100.0

gild:HCVProductsSofosbuvirVelpatasvir, gild:OtherInternational



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value1311001161181071001169369
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax2.41.72.12.12.01.72.11.61.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax2.41.72.12.12.01.72.11.61.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax gild:HCVProductsSofosbuvirVelpatasvir gild:OtherInternational100.0100.0100.0100.0100.0100.0100.0100.0100.0

gild:HCVProductsSofosbuvirVelpatasvir, srt:Europe



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value122125118156154152136168198
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax2.22.12.12.72.92.62.43.03.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax2.22.12.12.72.92.62.43.03.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax gild:HCVProductsSofosbuvirVelpatasvir srt:Europe100.0100.0100.0100.0100.0100.0100.0100.0100.0

gild:HCVProductsVosevi, country:US



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value333842534554788686
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.60.60.70.90.90.91.41.51.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.60.60.70.90.90.91.41.51.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax gild:HCVProductsVosevi country:US100.0100.0100.0100.0100.0100.0100.0100.0100.0

gild:HCVProductsVosevi, gild:OtherInternational



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value479722435
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.10.10.20.10.00.00.10.10.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.10.10.20.10.00.00.10.10.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax gild:HCVProductsVosevi gild:OtherInternational100.0100.0100.0100.0100.0100.0100.0100.0100.0

gild:HCVProductsVosevi, srt:Europe



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value111112151621212016
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.20.20.20.30.30.40.40.40.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.20.20.20.30.30.40.40.40.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax gild:HCVProductsVosevi srt:Europe100.0100.0100.0100.0100.0100.0100.0100.0100.0

gild:HIVProductsAtripla, country:US



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value81114132122133244221274228
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.51.92.42.12.54.23.94.94.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.51.92.42.12.54.23.94.94.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax gild:HIVProductsAtripla country:US100.0100.0100.0100.0100.0100.0100.0100.0100.0

gild:HIVProductsAtripla, gild:OtherInternational



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value7674222983635
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.10.10.10.10.40.50.10.60.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.10.10.10.10.40.50.10.60.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax gild:HIVProductsAtripla gild:OtherInternational100.0100.0100.0100.0100.0100.0100.0100.0100.0

gild:HIVProductsAtripla, srt:Europe



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value7810261612293951
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.10.10.20.50.30.20.50.71.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.10.10.20.50.30.20.50.71.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax gild:HIVProductsAtripla srt:Europe100.0100.0100.0100.0100.0100.0100.0100.0100.0

gild:HIVProductsBiktarvy, country:US



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value141213571106102373955137518335
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax25.523.119.718.014.09.56.73.20.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax25.523.119.718.014.09.56.73.20.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax gild:HIVProductsBiktarvy country:US100.0100.0100.0100.0100.0100.0100.0100.0100.0

gild:HIVProductsBiktarvy, gild:OtherInternational



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value10072452061000
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.81.20.80.40.10.00.00.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.81.20.80.40.10.00.00.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax gild:HIVProductsBiktarvy gild:OtherInternational100.0100.0100.0100.0100.0100.00.00.00.0

gild:HIVProductsBiktarvy, srt:Europe



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value1811411087348261120
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax3.32.41.91.30.90.40.20.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax3.32.41.91.30.90.40.20.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax gild:HIVProductsBiktarvy srt:Europe100.0100.0100.0100.0100.0100.0100.0100.00.0

gild:HIVProductsCompleraEviplera, country:US



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value243440424466618267
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.40.60.70.70.81.11.11.51.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.40.60.70.70.81.11.11.51.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax gild:HIVProductsCompleraEviplera country:US100.0100.0100.0100.0100.0100.0100.0100.0100.0

gild:HIVProductsCompleraEviplera, gild:OtherInternational



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value5689911111414
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.10.10.10.20.20.20.20.20.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.10.10.10.20.20.20.20.20.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax gild:HIVProductsCompleraEviplera gild:OtherInternational100.0100.0100.0100.0100.0100.0100.0100.0100.0

gild:HIVProductsCompleraEviplera, srt:Europe



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value47354572624867103109
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.80.60.81.31.20.81.21.82.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.80.60.81.31.20.81.21.82.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax gild:HIVProductsCompleraEviplera srt:Europe100.0100.0100.0100.0100.0100.0100.0100.0100.0

gild:HIVProductsDescovy, country:US



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value363343256246233322310311274
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax6.55.84.64.34.45.65.55.55.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax6.55.84.64.34.45.65.55.55.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax gild:HIVProductsDescovy country:US100.0100.0100.0100.0100.0100.0100.0100.0100.0

gild:HIVProductsDescovy, gild:OtherInternational



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value343944434115151412
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.60.70.80.80.80.30.30.20.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.60.70.80.80.80.30.30.20.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax gild:HIVProductsDescovy gild:OtherInternational100.0100.0100.0100.0100.0100.0100.0100.0100.0

gild:HIVProductsDescovy, srt:Europe



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value615563696874817875
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.10.91.11.21.31.31.41.41.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.10.91.11.21.31.31.41.41.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax gild:HIVProductsDescovy srt:Europe100.0100.0100.0100.0100.0100.0100.0100.0100.0

gild:HIVProductsGenvoya, country:US



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value612762761733728953921904853
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax11.013.013.612.913.816.416.516.016.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax11.013.013.612.913.816.416.516.016.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax gild:HIVProductsGenvoya country:US100.0100.0100.0100.0100.0100.0100.0100.0100.0

gild:HIVProductsGenvoya, gild:OtherInternational



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value615465709455524943
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.10.91.21.21.80.90.90.90.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.10.91.21.21.80.90.90.90.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax gild:HIVProductsGenvoya gild:OtherInternational100.0100.0100.0100.0100.0100.0100.0100.0100.0

gild:HIVProductsGenvoya, srt:Europe



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value151142152177193198203207186
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax2.72.42.73.13.73.43.63.73.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax2.72.42.73.13.73.43.63.73.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax gild:HIVProductsGenvoya srt:Europe100.0100.0100.0100.0100.0100.0100.0100.0100.0

gild:HIVProductsOdefsey, country:US



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value269315317266282337323303279
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax4.85.45.74.75.35.85.85.45.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax4.85.45.74.75.35.85.85.45.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax gild:HIVProductsOdefsey country:US100.0100.0100.0100.0100.0100.0100.0100.0100.0

gild:HIVProductsOdefsey, gild:OtherInternational



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value131081096555
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.20.20.10.20.20.10.10.10.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.20.20.10.20.20.10.10.10.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax gild:HIVProductsOdefsey gild:OtherInternational100.0100.0100.0100.0100.0100.0100.0100.0100.0

gild:HIVProductsOdefsey, srt:Europe



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value127110111111106105957758
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax2.31.92.02.02.01.81.71.41.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax2.31.92.02.02.01.81.71.41.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax gild:HIVProductsOdefsey srt:Europe100.0100.0100.0100.0100.0100.0100.0100.0100.0

gild:HIVProductsStribild, country:US



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value3460637867117111144133
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.61.01.11.41.32.02.02.52.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.61.01.11.41.32.02.02.52.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax gild:HIVProductsStribild country:US100.0100.0100.0100.0100.0100.0100.0100.0100.0

gild:HIVProductsStribild, gild:OtherInternational



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value2-413611615912
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.0-0.10.20.10.20.10.30.20.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.0-0.10.20.10.20.10.30.20.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax gild:HIVProductsStribild gild:OtherInternational100.0100.0100.0100.0100.0100.0100.0100.0100.0

gild:HIVProductsStribild, srt:Europe



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value171518241814203429
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.30.30.30.40.30.20.40.60.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.30.30.30.40.30.20.40.60.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax gild:HIVProductsStribild srt:Europe100.0100.0100.0100.0100.0100.0100.0100.0100.0

gild:HIVProductsTruvada, country:US



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value383744688657551784665649507
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax6.912.712.311.610.413.511.911.510.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax6.912.712.311.610.413.511.911.510.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax gild:HIVProductsTruvada country:US100.0100.0100.0100.0100.0100.0100.0100.0100.0

gild:HIVProductsTruvada, gild:OtherInternational



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value151119202224303048
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.30.20.30.40.40.40.50.50.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.30.20.30.40.40.40.50.50.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax gild:HIVProductsTruvada gild:OtherInternational100.0100.0100.0100.0100.0100.0100.0100.0100.0

gild:HIVProductsTruvada, srt:Europe



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value81314413315628697
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.10.20.20.70.60.31.11.51.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.10.20.20.70.60.31.11.51.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax gild:HIVProductsTruvada srt:Europe100.0100.0100.0100.0100.0100.0100.0100.0100.0

gild:OtherProductsAmBisome, country:US



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value18109108691417298
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.30.20.20.20.20.10.20.20.30.00.10.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.30.20.20.20.20.10.20.20.30.00.10.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax gild:OtherProductsAmBisome country:US100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

gild:OtherProductsAmBisome, gild:OtherInternational



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value424033352843343434343234
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.80.70.60.60.50.70.60.60.70.60.50.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.80.70.60.60.50.70.60.60.70.60.50.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax gild:OtherProductsAmBisome gild:OtherInternational100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

gild:OtherProductsAmBisome, srt:Europe



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value596057605759595556545150
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.11.01.01.11.11.01.11.01.10.90.80.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.11.01.01.11.11.01.11.01.10.90.80.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax gild:OtherProductsAmBisome srt:Europe100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

gild:OtherProductsLetairis, country:US



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value8396121204197254241244204233213230
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.51.62.23.63.74.44.34.34.03.93.33.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.51.62.23.63.74.44.34.34.03.93.33.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax gild:OtherProductsLetairis country:US100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

gild:OtherProductsOther, country:US



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value423842413644372729557098
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.80.60.70.70.70.80.70.50.60.91.11.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.80.60.70.70.70.80.70.50.60.91.11.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax gild:OtherProductsOther country:US100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

gild:OtherProductsOther, gild:OtherInternational



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value30426-108476287170144
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.10.00.10.00.1-0.20.10.81.21.52.62.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.10.00.10.00.1-0.20.10.81.21.52.62.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax gild:OtherProductsOther gild:OtherInternational100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

gild:OtherProductsOther, srt:Europe



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value1820-21972011941153533126
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.30.3-0.41.70.40.00.30.70.30.60.51.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.30.3-0.41.70.40.00.30.70.30.60.51.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax gild:OtherProductsOther srt:Europe100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

gild:OtherProductsRanexa, country:US



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value8113119155177178208195200164200
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.10.20.60.32.93.13.23.73.83.42.52.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.10.20.60.32.93.13.23.73.83.42.52.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax gild:OtherProductsRanexa country:US100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

gild:OtherProductsVemlidy, country:US



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value739578716573665947
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.31.61.41.21.21.31.21.00.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.31.61.41.21.21.31.21.00.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax gild:OtherProductsVemlidy country:US100.0100.0100.0100.0100.0100.0100.0100.0100.0

gild:OtherProductsVemlidy, gild:OtherInternational



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value56365040322319148
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.00.60.90.70.60.40.30.20.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.00.60.90.70.60.40.30.20.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax gild:OtherProductsVemlidy gild:OtherInternational100.0100.0100.0100.0100.0100.0100.0100.0100.0

gild:OtherProductsVemlidy, srt:Europe



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value766544233
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.10.10.10.10.10.10.00.10.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.10.10.10.10.10.10.00.10.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax gild:OtherProductsVemlidy srt:Europe100.0100.0100.0100.0100.0100.0100.0100.0100.0

gild:OtherProductsViread, country:US



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value4479121017167
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.10.10.10.20.20.20.30.30.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.10.10.10.20.20.20.30.30.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax gild:OtherProductsViread country:US100.0100.0100.0100.0100.0100.0100.0100.0100.0

gild:OtherProductsViread, gild:OtherInternational



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value252335384638433460
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.50.40.60.70.90.70.80.61.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.50.40.60.70.90.70.80.61.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax gild:OtherProductsViread gild:OtherInternational100.0100.0100.0100.0100.0100.0100.0100.0100.0

gild:OtherProductsViread, srt:Europe



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value111215281410103230
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.20.20.30.50.30.20.20.60.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.20.20.30.50.30.20.20.60.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax gild:OtherProductsViread srt:Europe100.0100.0100.0100.0100.0100.0100.0100.0100.0

gild:OtherProductsYescarta, country:US



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value1039886999080756840700
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.91.71.51.71.71.41.31.20.80.10.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.91.71.51.71.71.41.31.20.80.10.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax gild:OtherProductsYescarta country:US100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.0

gild:OtherProductsYescarta, srt:Europe



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value3724322161000000
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.70.40.60.40.10.00.00.00.00.00.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.70.40.60.40.10.00.00.00.00.00.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax gild:OtherProductsYescarta srt:Europe100.0100.0100.0100.0100.0100.00.00.00.00.00.00.0

gild:OtherProductsZydelig, country:US



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value81113121115151714171819
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.10.20.20.20.20.30.30.30.30.30.30.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.10.20.20.20.20.30.30.30.30.30.30.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax gild:OtherProductsZydelig country:US100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

gild:OtherProductsZydelig, gild:OtherInternational



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value010010101200
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax gild:OtherProductsZydelig gild:OtherInternational0.0100.00.00.0100.00.0100.00.0100.0100.00.00.0

gild:OtherProductsZydelig, srt:Europe



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value12121314152642218202216
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.20.20.20.20.30.40.10.40.40.30.30.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.20.20.20.20.30.40.10.40.40.30.30.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax gild:OtherProductsZydelig srt:Europe100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

gild:ProductsOtherHIV, country:US



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value37391110101199137
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.10.10.10.20.20.20.20.20.20.20.20.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.10.10.10.20.20.20.20.20.20.20.20.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax gild:ProductsOtherHIV country:US100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

gild:ProductsOtherHIV, gild:OtherInternational



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value311554253702
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.10.00.00.10.10.10.00.10.10.10.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.10.00.00.10.10.10.00.10.10.10.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax gild:ProductsOtherHIV gild:OtherInternational100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0

gild:ProductsOtherHIV, srt:Europe



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value221111231122
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.00.00.00.00.00.00.00.10.00.00.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.00.00.00.00.00.00.00.10.00.00.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax gild:ProductsOtherHIV srt:Europe100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

gild:ProductsRevenueShareSymtuza, country:US



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value728468554219800000
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.31.41.21.00.80.30.10.00.00.00.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.31.41.21.00.80.30.10.00.00.00.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax gild:ProductsRevenueShareSymtuza country:US100.0100.0100.0100.0100.0100.0100.00.00.00.00.00.0

gild:ProductsRevenueShareSymtuza, gild:OtherInternational



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value200000000000
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax gild:ProductsRevenueShareSymtuza gild:OtherInternational100.00.00.00.00.00.00.00.00.00.00.00.0

gild:ProductsRevenueShareSymtuza, srt:Europe



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value38413629241814137000
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.70.70.60.50.50.30.30.20.10.00.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.70.70.60.50.50.30.30.20.10.00.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax gild:ProductsRevenueShareSymtuza srt:Europe100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.0

us-gaap:Product, country:US



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value398945164199405437964470413140693527413545424982
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax71.976.874.971.371.977.173.872.069.369.569.769.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax71.976.874.971.371.977.173.872.069.369.569.769.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:Product country:US100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:Product, gild:OtherInternational



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value551440513512522398451466469553663665
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax9.97.59.29.09.96.98.18.39.29.310.29.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax9.97.59.29.09.96.98.18.39.29.310.29.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:Product gild:OtherInternational100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:Product, srt:Europe



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value927840804104188281387310051005114911971399
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax16.714.314.318.316.714.015.617.819.819.318.419.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax16.714.314.318.316.714.015.617.819.819.318.419.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:Product srt:Europe100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Revenues

us-gaap:Revenues



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-09-302009-06-302009-03-31
Value554858795604568552815795559656485088594965127141650573207500777677948506829582447594731460416534499831192782276725312588242624052282220021212137192619981937192720852032180116471530
Percentage of Revenues100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProductOrService

gild:RoyaltyContractAndOther



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value81838878811141411088711211095
Percentage of Revenues1.51.41.61.41.52.02.51.91.71.91.71.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.51.41.61.41.52.02.51.91.71.91.71.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax gild:RoyaltyContractAndOther0.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.0

us-gaap:Product



Period End2020-03-312019-03-31
Value54675200
Percentage of Revenues98.598.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax98.598.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:Product100.0100.0

us-gaap:ProductOrService, us-gaap:StatementGeographical

gild:RoyaltyContractAndOther, country:US



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value171920192218201420232122
Percentage of Revenues0.30.30.40.30.40.30.40.20.40.40.30.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.30.30.40.30.40.30.40.20.40.40.30.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax gild:RoyaltyContractAndOther country:US0.00.00.00.00.00.00.00.00.00.00.00.0

gild:RoyaltyContractAndOther, gild:OtherInternational



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value16111319191515151514
Percentage of Revenues0.30.00.00.00.10.30.30.30.30.30.20.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.30.00.00.00.10.30.30.30.30.30.20.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax gild:RoyaltyContractAndOther gild:OtherInternational0.00.00.00.00.00.00.00.00.00.00.00.0

gild:RoyaltyContractAndOther, srt:Europe



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value4863675856771027952747459
Percentage of Revenues0.91.11.21.01.11.31.81.41.01.21.10.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.91.11.21.01.11.31.81.41.01.21.10.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax gild:RoyaltyContractAndOther srt:Europe0.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:StatementGeographical

country:US



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value400645354219407338184488415140833547415845635004
Percentage of Revenues72.277.175.371.672.377.474.272.369.769.970.170.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax72.277.175.371.672.377.474.272.369.769.970.170.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax country:US0.00.00.00.00.00.00.00.00.00.00.00.0

gild:OtherInternational



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value567441514513525417470481484568678679
Percentage of Revenues10.27.59.29.09.97.28.48.59.59.510.49.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax10.27.59.29.09.97.28.48.59.59.510.49.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax gild:OtherInternational0.00.00.00.00.00.00.00.00.00.00.00.0

srt:Europe



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value975903871109993889097510841057122312711458
Percentage of Revenues17.615.415.519.317.815.417.419.220.820.619.520.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax17.615.415.519.317.815.417.419.220.820.619.520.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:Europe0.00.00.00.00.00.00.00.00.00.00.00.0

Sales Revenue Net

Sales Revenue Goods Net

Cost Of Goods And Services Sold

us-gaap:CostOfGoodsAndServicesSold



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value9691683103510009571570108611961001125610321126
Percentage of CostOfGoodsAndServicesSold100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax17.528.618.517.618.127.119.421.219.721.115.815.8

Cost Of Goods Sold

Gross Profit

Costs And Expenses

us-gaap:CostsAndExpenses



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-312009-09-302009-06-302009-03-31
Value3146478670773255304446512973336829353658270028872738327531013238314328852710262822232983256221221956163416131506138213461482111711201024958934924906886722
Percentage of CostsAndExpenses100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax56.781.4126.357.357.680.353.159.657.761.541.540.442.144.741.341.640.333.932.731.929.340.842.432.539.158.858.359.557.056.064.952.752.453.249.548.544.350.353.847.2

Research And Development Expense

us-gaap:ResearchAndDevelopmentExpense



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-31
Value1101189949901160105719509391192937115078986493112081141148412657577438186961044630583594546523497465396458
Percentage of ResearchAndDevelopmentExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax19.832.389.020.420.033.616.821.118.419.312.112.114.316.515.219.116.28.99.09.99.214.310.48.911.919.618.919.719.216.520.1

Selling General And Administrative Expense

us-gaap:SellingGeneralAndAdministrativeExpense



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-312009-09-302009-06-302009-03-31
Value10761204105210951030113194898099712528798978509928318906851066903812645876944613548406404374319332443295304295250248265227261203
Percentage of SellingGeneralAndAdministrativeExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax19.420.518.819.319.519.516.917.419.621.013.512.613.113.611.111.48.812.510.99.88.512.015.69.411.014.614.614.813.213.819.413.914.215.312.912.912.712.615.913.3

Operating Income Loss

us-gaap:OperatingIncomeLoss



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-312009-09-302009-06-302009-03-31
Value24021093-1473243022371144262322802153229138124254376740454399453846515621558556165371433034794412304211471153102510431059800100310169019799921161894761808
Percentage of OperatingIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax43.318.6-26.342.742.419.746.940.442.338.558.559.657.955.358.758.459.766.167.368.170.759.257.667.560.941.241.740.543.044.035.147.347.646.850.551.555.749.746.252.8

Interest Expense

us-gaap:InterestExpense



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-312009-09-302009-06-302009-03-31
Value24124325024825425726426629029729126926126524222723023016514015313010310276737881898897434641331716171816
Percentage of InterestExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax4.34.14.54.44.84.44.74.75.75.04.53.84.03.63.22.93.02.72.01.72.01.81.71.61.52.72.83.23.73.74.32.02.22.11.70.90.81.01.11.1

Interest Expense Long Term Debt

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

us-gaap:OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-30
Value-3925-27-1321-211-2574-429-76216-50921333-10-5-1015211-85-24-3-4
Percentage of OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.70.4-0.5-0.20.4-0.40.0-0.40.10.1-0.10.4-1.23.0-0.70.10.00.20.00.0-0.1-0.1-0.20.00.10.10.4-0.40.2-0.10.2-0.2-0.2

Income Loss From Continuing Operations Before Income Taxes Domestic

Income Loss From Continuing Operations Before Income Taxes Foreign

Nonoperating Income Expense

us-gaap:NonoperatingIncomeExpense



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-312009-09-302009-06-302009-03-31
Value-15810512222283671293057217013215013011114011988814652352129-5-3-1750-3-3-1-3414111315181514124
Percentage of NonoperatingIncomeExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-2.817.94.04.06.92.25.51.33.32.22.31.81.71.91.61.11.00.50.60.40.30.4-0.1-0.1-0.40.2-0.0-0.1-0.1-0.0-1.50.70.60.70.80.90.80.80.80.3

Income Tax Expense Benefit

us-gaap:IncomeTaxExpenseBenefit



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-312009-09-302009-06-302009-03-31
Value465-788-3335353821013565267494596295910469188219519029357528801014907767646656725294307222280263231237240227258284307220186209
Percentage of IncomeTaxExpenseBenefit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax8.4-13.4-5.99.47.217.510.14.79.7100.214.714.614.111.212.711.612.08.810.612.311.910.510.710.014.510.611.18.811.511.010.111.211.211.813.414.714.812.311.313.7

Income Taxes Paid Net

Profit Loss

us-gaap:ProfitLoss



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-09-302009-06-302009-03-31
Value15382689-1168187519683209918191539-3836271230692699309933253497356746854592449743323462272436502222786785767717758671711441661737742647626702709852799670569586
Percentage of ProfitLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax27.745.7-20.833.037.30.137.532.230.2-64.541.643.041.542.344.345.045.855.155.454.557.047.345.155.944.525.228.227.728.329.327.729.619.430.134.834.733.631.336.236.840.939.337.234.638.3

Comprehensive Income Net Of Tax

us-gaap:ComprehensiveIncomeNetOfTax



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-312009-09-302009-06-30
Value15122664-11501852202547213119891496-3949284729332684349432683615331446044520420045713613294637092256716782788579796417855710515520815941607480
Percentage of ComprehensiveIncomeNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax27.345.3-20.532.638.30.838.135.229.4-66.443.741.141.347.743.646.542.554.154.550.960.249.448.856.845.125.728.331.223.933.118.340.333.226.726.842.345.133.829.2

Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest

us-gaap:ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-312009-09-302009-06-30
Value-13-7-3-5-7022129-6-4-3-9-5012-85-1-25-7-5-4-4-3-4-4-4-3-3-3-22-2-22
Percentage of ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.2-0.1-0.1-0.1-0.10.00.00.00.00.5-0.1-0.1-0.0-0.1-0.10.00.00.0-0.10.1-0.0-0.3-0.1-0.1-0.1-0.1-0.1-0.2-0.2-0.2-0.2-0.2-0.2-0.10.2-0.1-0.10.1

Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest

us-gaap:ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-312009-09-302009-06-30
Value14992657-11531847201847213319911497-3920284129292681348532633615331546064512420545703588293937042251712777784574802417858714519522818944610483
Percentage of ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax27.045.2-20.632.538.20.838.135.329.4-65.943.641.041.247.643.546.542.554.254.451.060.249.148.756.745.025.628.131.023.733.418.340.533.426.927.042.545.333.929.3

Net Income Loss

us-gaap:NetIncomeLoss



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-09-302009-06-302009-03-31
Value15512696-1165188019753209718171538-3865271830732702310833303497356646834600449243333487273136552227791788772722762675706437665741746651629704712854802673571589
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax28.045.9-20.833.137.40.137.532.230.2-65.041.743.041.542.544.445.045.855.155.554.557.147.745.255.944.625.428.327.928.529.527.829.419.230.234.934.933.831.536.436.941.039.537.434.738.5

us-gaap:StatementEquityComponents

us-gaap:RetainedEarnings



Period End2020-03-312019-03-31
Value15511975
Percentage of NetIncomeLoss100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax28.037.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:RetainedEarnings0.00.0

Net Income Loss Attributable To Noncontrolling Interest

us-gaap:NetIncomeLossAttributableToNoncontrollingInterest



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-312009-09-302009-06-302009-03-31
Value-13-7-3-5-7022129-6-4-3-9-5012-85-1-25-7-5-4-3-4-4-4-54-3-3-3-2-2-2-2-2-2
Percentage of NetIncomeLossAttributableToNoncontrollingInterest100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.2-0.1-0.1-0.1-0.10.00.00.00.00.5-0.1-0.1-0.0-0.1-0.10.00.00.0-0.10.1-0.0-0.3-0.1-0.1-0.1-0.1-0.2-0.2-0.2-0.20.2-0.2-0.2-0.2-0.1-0.2-0.1-0.1-0.1-0.2

us-gaap:StatementEquityComponents

us-gaap:NoncontrollingInterest



Period End2020-03-312019-03-31
Value-13-7
Percentage of NetIncomeLossAttributableToNoncontrollingInterest100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.2-0.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:NoncontrollingInterest0.00.0

Assets

us-gaap:Assets



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312008-12-31
Value597416162759146632106283763675643056535565381702836466260263577015697756609499804776551839506373916738321346642884431206280772249622468226242221121239209632050119950173031263912694129871159211455104961069596986936
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Liabilities And Stockholders Equity

us-gaap:LiabilitiesAndStockholdersEquity



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312008-12-31
Value597416162759146632106283763675643056535565381702836466260263577015697756609499804776551839506373916738321346642884431206280772249622468226242221121239209632050119950173031263912694129871159211455104961069596986936
Percentage of LiabilitiesAndStockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Stockholders Equity

us-gaap:StockholdersEquity



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312008-12-31
Value220672252520604226162195121387228612167220591204422484522677204411888716868155361339818534174141628717180154261356616090133871136910883110921015293098603800273136738611660465946586357066562734163674272
Percentage of StockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets36.936.634.835.834.933.635.633.231.529.138.437.635.433.129.831.128.035.834.441.644.844.547.051.647.750.548.449.045.743.841.039.036.738.948.447.645.850.649.862.568.665.661.6

us-gaap:StatementEquityComponents

us-gaap:AccumulatedNetGainLossFromDesignatedOrQualifyingCashFlowHedges



Period End2020-03-312019-12-312019-03-312018-12-31
Value65318485
Percentage of StockholdersEquity0.30.10.40.4
Percentage of Assets0.10.10.10.1
Percentage of Assets us-gaap:AccumulatedNetGainLossFromDesignatedOrQualifyingCashFlowHedges0.00.00.00.0

us-gaap:AccumulatedNetUnrealizedInvestmentGainLoss



Period End2020-03-312019-12-312019-03-312018-12-31
Value-331-22-52
Percentage of StockholdersEquity-0.10.0-0.1-0.2
Percentage of Assets-0.10.0-0.0-0.1
Percentage of Assets us-gaap:AccumulatedNetUnrealizedInvestmentGainLoss0.00.00.00.0

us-gaap:AccumulatedOtherComprehensiveIncome



Period End2020-03-312019-12-312019-03-312018-12-31
Value468513080
Percentage of StockholdersEquity0.20.40.60.4
Percentage of Assets0.10.10.20.1
Percentage of Assets us-gaap:AccumulatedOtherComprehensiveIncome0.00.00.00.0

us-gaap:AccumulatedTranslationAdjustment



Period End2020-03-312019-12-312019-03-312018-12-31
Value14536847
Percentage of StockholdersEquity0.10.20.30.2
Percentage of Assets0.00.10.10.1
Percentage of Assets us-gaap:AccumulatedTranslationAdjustment0.00.00.00.0

Assets Current

us-gaap:AssetsCurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312008-12-31
Value269503029628361337273402435836349183272830258318233531728592214242044521425183531926724763259101809320062177141256215499129707273696870726663615658805844582613918614762196851570860315709512448124278
Percentage of AssetsCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets45.149.248.053.454.156.354.350.146.345.354.647.437.135.937.836.740.347.851.246.252.451.143.649.746.232.331.031.330.029.028.128.529.280.448.649.052.849.252.754.447.949.661.7

Cash

Cash And Cash Equivalents At Carrying Value

Accounts Receivable Net Current

us-gaap:AccountsReceivableNetCurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312008-12-31
Value3907358233153396328333273465354137753851412244784034451450755752616358546105533148354635285034363236210019711895194517511766170221631951186719381801162116701482149113891023
Percentage of AccountsReceivableNetCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets6.55.85.65.45.25.25.45.45.85.56.47.47.07.99.011.512.911.312.113.612.613.49.911.011.59.38.88.48.88.28.48.310.811.314.815.313.914.014.614.113.914.314.8

Receivables Net Current

Inventory Net

us-gaap:InventoryNet



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312008-12-31
Value98692288288489881481685988580111441408147415871900186218801955198820391908138619092068214020551946193517991744161716031418138913371321130412031273135612231051927
Percentage of InventoryNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets1.71.51.51.41.41.31.31.31.41.11.82.32.62.83.43.73.93.83.95.25.04.06.66.67.69.18.78.68.18.27.77.87.18.010.610.410.010.411.112.911.410.813.4

Other Assets Current

Prepaid Expense And Other Assets Current

us-gaap:PrepaidExpenseAndOtherAssetsCurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312018-01-012017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302014-12-312012-12-312011-12-31
Value127214401308226419391606217124111600175716611664161018011592142211522075151912091057186222
Percentage of PrepaidExpenseAndOtherAssetsCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets2.12.32.23.63.12.53.43.72.40.02.42.62.73.12.82.52.34.32.92.43.00.91.3

Land

Machinery And Equipment Gross

Noncurrent Assets

Property Plant And Equipment Gross

Accumulated Depreciation Depletion And Amortization Property Plant And Equipment

Property Plant And Equipment Net

us-gaap:PropertyPlantAndEquipmentNet



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312008-12-31
Value456445024377424941164006379136593415329531003012292228652714259924312276214318991765167415091380130311661133113511251100856811782774761721703701692695695699528
Percentage of PropertyPlantAndEquipmentNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets7.67.37.46.76.66.35.95.65.24.74.85.05.15.04.85.25.14.44.24.84.64.85.24.44.65.25.05.05.15.24.14.03.94.56.05.75.46.06.06.66.57.27.6

Goodwill

us-gaap:Goodwill



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-07-192018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-07-082010-06-302009-12-31
Value411741174117411741174117411704124415941591172117211721172117211721172117211721172117211721171117111711169118811881188106010781078107810041004100475453253270462462
Percentage of Goodwill100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets6.96.77.06.56.66.56.40.06.36.45.91.81.92.02.12.12.32.52.32.33.03.13.44.13.84.25.25.35.35.35.05.15.35.45.87.97.95.84.64.60.04.44.8

Intangible Assets Net Excluding Goodwill

us-gaap:IntangibleAssetsNetExcludingGoodwill



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-31
Value135021378614864151521543815738163141649616803171008342855187618971938697139923102471045410660108671107311306115081170711900120341205612077117361173511751117671062
Percentage of IntangibleAssetsNetExcludingGoodwill100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets22.622.425.124.024.624.725.425.225.724.312.914.215.215.716.619.420.819.820.627.228.431.939.236.941.752.953.653.354.455.356.057.359.06.1

Finite Lived Intangible Assets Net

us-gaap:FiniteLivedIntangibleAssetsNet



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302011-12-312010-12-312010-09-302010-06-302009-12-31
Value12262125441282413109133961369413447137461405314350834285518761897191859395960598151002210228104351064110874109261112611325685707728750749764796863878893923
Percentage of FiniteLivedIntangibleAssetsNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets20.520.421.720.721.321.520.921.021.520.412.914.215.215.716.218.820.118.919.826.127.230.737.735.039.650.33.13.13.33.53.63.74.67.47.78.59.5

us-gaap:FiniteLivedIntangibleAssetsByMajorClass

gild:AxicabtageneciloleucelDLBCL



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-31
Value53535439552556125698578458705956604261280
Percentage of FiniteLivedIntangibleAssetsNet43.743.443.142.842.542.243.743.343.042.70.0
Percentage of Assets9.08.89.38.99.19.19.19.19.28.70.0
Percentage of Assets gild:AxicabtageneciloleucelDLBCL0.00.00.00.00.00.00.00.00.00.00.0

gild:IntangibleAssetSofosbuvir



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312015-12-31
Value629264676642681769917166734175157690786580408215839085649264
Percentage of FiniteLivedIntangibleAssetsNet51.351.651.852.052.252.354.654.754.754.896.496.195.895.594.4
Percentage of Assets10.510.511.210.811.111.311.411.511.811.212.413.614.515.017.9
Percentage of Assets gild:IntangibleAssetSofosbuvir0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

gild:Ranexa



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312015-12-31
Value0000010386694122147171196221325
Percentage of FiniteLivedIntangibleAssetsNet0.00.00.00.00.00.10.30.50.70.91.82.02.22.53.3
Percentage of Assets0.00.00.00.00.00.00.10.10.10.20.20.30.30.40.6
Percentage of Assets gild:Ranexa0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:OtherIntangibleAssets



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312015-12-31
Value617638657680707734198209227235155165175186226
Percentage of FiniteLivedIntangibleAssetsNet5.05.15.15.25.35.41.51.51.61.61.91.92.02.12.3
Percentage of Assets1.01.01.11.11.11.20.30.30.30.30.20.30.30.30.4
Percentage of Assets us-gaap:OtherIntangibleAssets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Intangible Assets Net Including Goodwill

Deferred Tax Assets Liabilities Net

Other Assets Noncurrent

us-gaap:OtherAssetsNoncurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312018-01-012017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312008-12-31
Value707974385232291429212555278726092642273227222611231923122214164714811294105685868258373126721220419513914314915917017116916013111912518111191978573
Percentage of OtherAssetsNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets11.812.18.84.64.64.04.34.04.00.03.94.03.84.03.92.93.02.72.01.71.71.52.10.90.70.70.90.60.60.70.70.80.80.80.91.00.91.01.61.00.90.90.91.1

Liabilities Current

us-gaap:LiabilitiesCurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312008-12-31
Value887997599567896193971060510116109121067011635959784928282921911073104441091098919360892574285761605462275914632548954937429042704802498641872514222423102768246425903105188718711220
Percentage of LiabilitiesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets14.915.816.214.215.016.715.716.716.316.614.814.114.416.219.620.922.819.118.522.819.416.621.020.021.128.121.821.819.320.122.924.321.014.517.618.221.321.322.629.617.619.317.6

Debt Current

us-gaap:DebtCurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312008-12-31
Value199924992498199924982748274729982497274717470700700174598333135244248314771572187126971457148894211691730197213511176536466321124755
Percentage of DebtCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets3.34.14.23.24.04.34.34.63.83.92.70.01.21.43.71.90.70.91.21.45.15.06.712.06.56.64.25.58.39.66.80.00.00.15.05.65.510.70.10.10.1

Long Term Debt Current

us-gaap:LongTermDebtCurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-31
Value1999249924981999249827482746299824972747174700070070095398333135244248314771572187126961457-1488-942-11691730197213500
Percentage of LongTermDebtCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0
Percentage of Assets3.34.14.23.24.04.34.34.63.83.92.70.00.00.01.21.42.01.90.70.91.21.45.15.06.712.06.5-6.6-4.2-5.58.39.66.80.0

Accounts Payable Current

us-gaap:AccountsPayableCurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312008-12-31
Value5907136326175777905806237118146968199441206105211229451178123915711011955118211621234125513501390135613271319136713391206106311029818039501066949810601
Percentage of AccountsPayableCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets1.01.21.11.00.91.20.91.01.11.21.11.41.62.11.92.22.02.32.44.02.62.84.13.74.45.66.06.16.16.26.36.76.77.08.48.77.66.98.310.28.98.48.7

Other Accrued Liabilities Current

us-gaap:OtherAccruedLiabilitiesCurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302011-12-31
Value18082188211821521838202918181856171119181744182915891621208416571936184116231510144014521224144312221023816831819674647471
Percentage of OtherAccruedLiabilitiesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets3.03.63.63.42.93.22.82.82.62.72.73.02.82.83.73.34.13.63.23.93.84.24.24.64.44.63.63.73.73.23.12.7

Accrued Income Taxes Current

us-gaap:AccruedIncomeTaxesCurrent



Period End2020-03-312019-12-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-312016-09-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312008-12-31
Value64528719017176671318639051651593569810543971521010371913171114403352138243816744
Percentage of AccruedIncomeTaxesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets1.10.50.30.00.00.11.00.30.70.10.10.30.90.30.30.20.30.50.00.00.20.10.10.10.10.10.20.30.00.00.00.30.20.41.70.6

Long Term Debt

us-gaap:DebtInstrument, us-gaap:LongtermDebtType

us-gaap:LongTermDebt

gild:SeniorUnsecuredNotesDueApril2021, us-gaap:UnsecuredDebt



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value999998998998997997996996995
Percentage of LongTermDebt100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets1.71.61.71.61.61.61.51.51.4
Percentage of Assets gild:SeniorUnsecuredNotesDueApril2021 us-gaap:UnsecuredDebt0.00.00.00.00.00.00.00.00.0

gild:SeniorUnsecuredNotesDueDecember2021, us-gaap:UnsecuredDebt



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value124812481248124812471247124712471246
Percentage of LongTermDebt124.9125.1125.1125.1125.1125.1125.2125.2125.2
Percentage of Assets2.12.02.12.02.02.01.91.91.8
Percentage of Assets gild:SeniorUnsecuredNotesDueDecember2021 us-gaap:UnsecuredDebt0.00.00.00.00.00.00.00.00.0

gild:SeniorUnsecuredNotesDueInFebruary2020, us-gaap:UnsecuredDebt



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value0500500500499499499499499
Percentage of LongTermDebt0.050.150.150.150.150.150.150.150.2
Percentage of Assets0.00.80.80.80.80.80.80.80.7
Percentage of Assets gild:SeniorUnsecuredNotesDueInFebruary2020 us-gaap:UnsecuredDebt0.00.00.00.00.00.00.00.00.0

gild:SeniorUnsecuredNotesDueinApril2024, us-gaap:UnsecuredDebt



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value174517451745174417441744174317431742
Percentage of LongTermDebt174.7174.8174.8174.7174.9174.9175.0175.0175.1
Percentage of Assets2.92.83.02.82.82.72.72.72.5
Percentage of Assets gild:SeniorUnsecuredNotesDueinApril2024 us-gaap:UnsecuredDebt0.00.00.00.00.00.00.00.00.0

gild:SeniorUnsecuredNotesDueinApril2044, us-gaap:UnsecuredDebt



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value173517341734173417341734173417331733
Percentage of LongTermDebt173.7173.7173.7173.7173.9173.9174.1174.0174.2
Percentage of Assets2.92.82.92.72.82.72.72.72.5
Percentage of Assets gild:SeniorUnsecuredNotesDueinApril2044 us-gaap:UnsecuredDebt0.00.00.00.00.00.00.00.00.0

gild:SeniorUnsecuredNotesDueinFebruary2025, us-gaap:UnsecuredDebt



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value174617461745174517451745174517441744
Percentage of LongTermDebt174.8174.9174.8174.8175.0175.0175.2175.1175.3
Percentage of Assets2.92.83.02.82.82.72.72.72.5
Percentage of Assets gild:SeniorUnsecuredNotesDueinFebruary2025 us-gaap:UnsecuredDebt0.00.00.00.00.00.00.00.00.0

gild:SeniorUnsecuredNotesDueinFebruary2045, us-gaap:UnsecuredDebt



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value173117311731173117311730173017301730
Percentage of LongTermDebt173.3173.4173.4173.4173.6173.5173.7173.7173.9
Percentage of Assets2.92.82.92.72.82.72.72.62.5
Percentage of Assets gild:SeniorUnsecuredNotesDueinFebruary2045 us-gaap:UnsecuredDebt0.00.00.00.00.00.00.00.00.0

gild:SeniorUnsecuredNotesDueinMarch2022, us-gaap:UnsecuredDebt



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value499499498498498498498498497
Percentage of LongTermDebt49.950.049.949.949.949.950.050.049.9
Percentage of Assets0.80.80.80.80.80.80.80.80.7
Percentage of Assets gild:SeniorUnsecuredNotesDueinMarch2022 us-gaap:UnsecuredDebt0.00.00.00.00.00.00.00.00.0

gild:SeniorUnsecuredNotesDueinMarch2026, us-gaap:UnsecuredDebt



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value273527342733273327322731273127302729
Percentage of LongTermDebt273.8273.9273.8273.8274.0273.9274.2274.1274.3
Percentage of Assets4.64.44.64.34.34.34.24.23.9
Percentage of Assets gild:SeniorUnsecuredNotesDueinMarch2026 us-gaap:UnsecuredDebt0.00.00.00.00.00.00.00.00.0

gild:SeniorUnsecuredNotesDueinMarch2027, us-gaap:UnsecuredDebt



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value124512451245124512451245124512441244
Percentage of LongTermDebt124.6124.7124.7124.7124.9124.9125.0124.9125.0
Percentage of Assets2.12.02.12.02.02.01.91.91.8
Percentage of Assets gild:SeniorUnsecuredNotesDueinMarch2027 us-gaap:UnsecuredDebt0.00.00.00.00.00.00.00.00.0

gild:SeniorUnsecuredNotesDueinMarch2046, us-gaap:UnsecuredDebt



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value221822172217221722172216221622152215
Percentage of LongTermDebt222.0222.1222.1222.1222.4222.3222.5222.4222.6
Percentage of Assets3.73.63.73.53.53.53.43.43.2
Percentage of Assets gild:SeniorUnsecuredNotesDueinMarch2046 us-gaap:UnsecuredDebt0.00.00.00.00.00.00.00.00.0

gild:SeniorUnsecuredNotesDueinMarch2047, us-gaap:UnsecuredDebt



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value172517251725172517251724172417241723
Percentage of LongTermDebt172.7172.8172.8172.8173.0172.9173.1173.1173.2
Percentage of Assets2.92.82.92.72.72.72.72.62.5
Percentage of Assets gild:SeniorUnsecuredNotesDueinMarch2047 us-gaap:UnsecuredDebt0.00.00.00.00.00.00.00.00.0

gild:SeniorUnsecuredNotesDueinSeptember2020, us-gaap:UnsecuredDebt



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value199919991998199719971996199519951994
Percentage of LongTermDebt200.1200.3200.2200.1200.3200.2200.3200.3200.4
Percentage of Assets3.33.23.43.23.23.13.13.12.8
Percentage of Assets gild:SeniorUnsecuredNotesDueinSeptember2020 us-gaap:UnsecuredDebt0.00.00.00.00.00.00.00.00.0

gild:SeniorUnsecuredNotesDueinSeptember2022, us-gaap:UnsecuredDebt



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value998998998997997997997997996
Percentage of LongTermDebt99.9100.0100.099.9100.0100.0100.1100.1100.1
Percentage of Assets1.71.61.71.61.61.61.61.51.4
Percentage of Assets gild:SeniorUnsecuredNotesDueinSeptember2022 us-gaap:UnsecuredDebt0.00.00.00.00.00.00.00.00.0

gild:SeniorUnsecuredNotesDueinSeptember2023, us-gaap:UnsecuredDebt



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value747747746746746746745745745
Percentage of LongTermDebt74.874.874.774.774.874.874.874.874.9
Percentage of Assets1.31.21.31.21.21.21.21.11.1
Percentage of Assets gild:SeniorUnsecuredNotesDueinSeptember2023 us-gaap:UnsecuredDebt0.00.00.00.00.00.00.00.00.0

gild:SeniorUnsecuredNotesDueinSeptember2035, us-gaap:UnsecuredDebt



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value991991991990990990990990990
Percentage of LongTermDebt99.299.399.399.299.399.399.499.499.5
Percentage of Assets1.71.61.71.61.61.61.51.51.4
Percentage of Assets gild:SeniorUnsecuredNotesDueinSeptember2035 us-gaap:UnsecuredDebt0.00.00.00.00.00.00.00.00.0

gild:SeniorUnsecuredNotesDueinSeptember2036, us-gaap:UnsecuredDebt



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value741741741741740740740740740
Percentage of LongTermDebt74.274.274.274.274.274.274.374.374.4
Percentage of Assets1.21.21.31.21.21.21.21.11.1
Percentage of Assets gild:SeniorUnsecuredNotesDueinSeptember2036 us-gaap:UnsecuredDebt0.00.00.00.00.00.00.00.00.0

Long Term Debt Noncurrent

us-gaap:LongTermDebtNoncurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-31
Value22098220942209024084240802457424570260622655730795275152629626321263462637121427210772119521894119221192111921793379327932393858565849705470547040712680777605
Percentage of LongTermDebtNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets37.035.937.338.138.338.638.239.940.643.842.643.645.646.246.642.944.140.943.230.431.134.427.525.428.317.526.125.931.833.233.634.840.544.0

Deferred Tax Liabilities Noncurrent

Minority Interest

us-gaap:MinorityInterest



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312008-12-31
Value1121251321351401471466260594094144764764925796215795303474083932973383143753082512402411468150128116164229258172137160138193
Percentage of MinorityInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.20.20.20.20.20.20.20.10.10.10.60.70.80.80.91.21.31.11.00.91.11.11.01.11.11.71.41.11.11.10.70.40.30.70.91.31.82.21.51.31.51.42.8

Other Liabilities Noncurrent

us-gaap:OtherLiabilitiesNoncurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312018-01-012017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312008-12-31
Value990100990115771460104059464667158955825944233329618446737439537876061953548217417415626122421322822115515314713815649274723273521
Percentage of OtherLiabilitiesNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets1.71.61.52.52.31.60.91.01.00.00.80.40.70.60.50.30.90.80.80.71.91.61.51.70.60.60.71.21.01.01.11.10.80.80.91.11.20.40.20.40.20.30.40.3

Stockholders Equity

us-gaap:StockholdersEquity



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312008-12-31
Value220672252520604226162195121387228612167220591204422484522677204411888716868155361339818534174141628717180154261356616090133871136910883110921015293098603800273136738611660465946586357066562734163674272
Percentage of StockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets36.936.634.835.834.933.635.633.231.529.138.437.635.433.129.831.128.035.834.441.644.844.547.051.647.750.548.449.045.743.841.039.036.738.948.447.645.850.649.862.568.665.661.6

us-gaap:StatementEquityComponents

us-gaap:AccumulatedNetGainLossFromDesignatedOrQualifyingCashFlowHedges



Period End2020-03-312019-12-312019-03-312018-12-31
Value65318485
Percentage of StockholdersEquity0.30.10.40.4
Percentage of Assets0.10.10.10.1
Percentage of Assets us-gaap:AccumulatedNetGainLossFromDesignatedOrQualifyingCashFlowHedges0.00.00.00.0

us-gaap:AccumulatedNetUnrealizedInvestmentGainLoss



Period End2020-03-312019-12-312019-03-312018-12-31
Value-331-22-52
Percentage of StockholdersEquity-0.10.0-0.1-0.2
Percentage of Assets-0.10.0-0.0-0.1
Percentage of Assets us-gaap:AccumulatedNetUnrealizedInvestmentGainLoss0.00.00.00.0

us-gaap:AccumulatedOtherComprehensiveIncome



Period End2020-03-312019-12-312019-03-312018-12-31
Value468513080
Percentage of StockholdersEquity0.20.40.60.4
Percentage of Assets0.10.10.20.1
Percentage of Assets us-gaap:AccumulatedOtherComprehensiveIncome0.00.00.00.0

us-gaap:AccumulatedTranslationAdjustment



Period End2020-03-312019-12-312019-03-312018-12-31
Value14536847
Percentage of StockholdersEquity0.10.20.30.2
Percentage of Assets0.00.10.10.1
Percentage of Assets us-gaap:AccumulatedTranslationAdjustment0.00.00.00.0

Common Stock Value

us-gaap:CommonStockValue



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312008-12-31
Value1111111111111111111212111100000000000000000
Percentage of CommonStockValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Retained Earnings Accumulated Deficit

us-gaap:RetainedEarningsAccumulatedDeficit



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312018-01-012017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312008-12-31
Value18709193881761619829193261902420706198251919619202190122368921823195641815416654149491304518001169611603813916127321124710199773461055735506543013704313926632178177613211395132011831122183126881995300
Percentage of RetainedEarningsAccumulatedDeficit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets31.331.529.831.430.829.932.230.329.40.027.136.636.233.931.929.429.927.334.733.540.936.336.739.032.727.527.125.522.419.417.415.013.010.910.310.511.010.210.29.817.425.120.64.3

Accumulated Other Comprehensive Income Loss Net Of Tax

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312008-12-31
Value468511710213080362-170165249120260278-108-46-16488167247539301173-41-95-124-423020-45281243358-15-133-10130718983-541
Percentage of AccumulatedOtherComprehensiveIncomeLossNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.10.10.20.20.20.10.10.0-0.30.20.40.20.50.5-0.2-0.1-0.30.20.30.61.40.90.6-0.1-0.3-0.6-0.20.10.1-0.20.10.60.20.3-0.1-1.0-0.80.30.11.80.8-0.10.6

Net Cash Provided By Used In Operating Activities

us-gaap:NetCashProvidedByUsedInOperatingActivities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-03-312012-03-312011-03-312010-03-312009-03-31
Value1436258028992221144423452212157322702753269435262925348643304940391348744096565857013020404441851568672452820670641
Percentage of NetCashProvidedByUsedInOperatingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax25.943.951.739.127.340.539.527.944.646.341.449.445.047.657.763.550.257.349.468.675.141.366.964.031.426.519.842.632.141.9

Net Cash Provided By Used In Investing Activities

us-gaap:NetCashProvidedByUsedInInvestingActivities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-03-312012-03-312011-03-312010-03-312009-03-31
Value-344431-2095-6042-1112735202552414354-10016-2114-4246307-2675-3917-3284-2109-2438-4186-3552-2299-404-770-487-160-407-10743-300-1068-328
Percentage of NetCashProvidedByUsedInInvestingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-6.27.3-37.4-106.3-2.147.236.292.885.6-168.4-32.5-59.54.7-36.5-52.2-42.2-27.1-28.7-50.5-43.1-30.3-5.5-12.7-7.5-3.2-16.1-470.7-15.6-51.2-21.5

Net Cash Provided By Used In Financing Activities

us-gaap:NetCashProvidedByUsedInFinancingActivities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-03-312012-03-312011-03-312010-03-312009-03-31
Value-2611-896-2515-1857-2366-1670-2901-1152-659533472170-880-1244-22952860-1516-8396-35446644-5341-27221233-5771-13712884-199185548516-145
Percentage of NetCashProvidedByUsedInFinancingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-47.1-15.2-44.9-32.7-44.8-28.8-51.8-20.4-129.656.333.3-12.3-19.1-31.438.1-19.5-107.7-41.780.1-64.8-35.816.9-95.5-21.057.7-7.981.325.20.8-9.5

Net Cash Provided By Used In Operating Activities

us-gaap:NetCashProvidedByUsedInOperatingActivities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-03-312012-03-312011-03-312010-03-312009-03-31
Value1436258028992221144423452212157322702753269435262925348643304940391348744096565857013020404441851568672452820670641
Percentage of NetCashProvidedByUsedInOperatingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax25.943.951.739.127.340.539.527.944.646.341.449.445.047.657.763.550.257.349.468.675.141.366.964.031.426.519.842.632.141.9

Net Income Loss

us-gaap:NetIncomeLoss



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-09-302009-06-302009-03-31
Value15512696-1165188019753209718171538-3865271830732702310833303497356646834600449243333487273136552227791788772722762675706437665741746651629704712854802673571589
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax28.045.9-20.833.137.40.137.532.230.2-65.041.743.041.542.544.445.045.855.155.554.557.147.745.255.944.625.428.327.928.529.527.829.419.230.234.934.933.831.536.436.941.039.537.434.738.5

us-gaap:StatementEquityComponents

us-gaap:RetainedEarnings



Period End2020-03-312019-03-31
Value15511975
Percentage of NetIncomeLoss100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax28.037.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:RetainedEarnings0.00.0

Profit Loss

us-gaap:ProfitLoss



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-09-302009-06-302009-03-31
Value15382689-1168187519683209918191539-3836271230692699309933253497356746854592449743323462272436502222786785767717758671711441661737742647626702709852799670569586
Percentage of ProfitLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax27.745.7-20.833.037.30.137.532.230.2-64.541.643.041.542.344.345.045.855.155.454.557.047.345.155.944.525.228.227.728.329.327.729.619.430.134.834.733.631.336.236.840.939.337.234.638.3

Increase Decrease In Inventories

us-gaap:IncreaseDecreaseInInventories



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-03-312012-03-312011-03-312010-03-312009-03-31
Value-156023-31511915720141746595214177831419625264370-42-121-638457269717411
Percentage of IncreaseDecreaseInInventories100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Net Cash Provided By Used In Investing Activities

us-gaap:NetCashProvidedByUsedInInvestingActivities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-03-312012-03-312011-03-312010-03-312009-03-31
Value-344431-2095-6042-1112735202552414354-10016-2114-4246307-2675-3917-3284-2109-2438-4186-3552-2299-404-770-487-160-407-10743-300-1068-328
Percentage of NetCashProvidedByUsedInInvestingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-6.27.3-37.4-106.3-2.147.236.292.885.6-168.4-32.5-59.54.7-36.5-52.2-42.2-27.1-28.7-50.5-43.1-30.3-5.5-12.7-7.5-3.2-16.1-470.7-15.6-51.2-21.5

Payments To Acquire Property Plant And Equipment

us-gaap:PaymentsToAcquirePropertyPlantAndEquipment



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-31
Value171200185237167297212129123118198204177
Percentage of PaymentsToAcquirePropertyPlantAndEquipment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Payments To Acquire Investments

Net Cash Provided By Used In Financing Activities

us-gaap:NetCashProvidedByUsedInFinancingActivities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-03-312012-03-312011-03-312010-03-312009-03-31
Value-2611-896-2515-1857-2366-1670-2901-1152-659533472170-880-1244-22952860-1516-8396-35446644-5341-27221233-5771-13712884-199185548516-145
Percentage of NetCashProvidedByUsedInFinancingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-47.1-15.2-44.9-32.7-44.8-28.8-51.8-20.4-129.656.333.3-12.3-19.1-31.438.1-19.5-107.7-41.780.1-64.8-35.816.9-95.5-21.057.7-7.981.325.20.8-9.5

Repayments Of Long Term Debt

Payments Of Dividends

us-gaap:PaymentsOfDividends



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-30
Value874801804800817736742740753682682680687619623626587614627633000
Percentage of PaymentsOfDividends100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.0

Payments Of Dividends

us-gaap:PaymentsOfDividends



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-30
Value874801804800817736742740753682682680687619623626587614627633000
Percentage of PaymentsOfDividends100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.0

Payments For Repurchase Of Common Stock

us-gaap:PaymentsForRepurchaseOfCommonStock



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-03-312012-03-312011-03-312010-07-312010-03-312009-03-31
Value1328105222588834962449450103910615313056510001000100180003051305090030012000170012004508220548248162230
Percentage of PaymentsForRepurchaseOfCommonStock100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Repayments Of Long Term Debt

Debt Instrument Interest Rate Stated Percentage

Effective Income Tax Rate Continuing Operations

us-gaap:EffectiveIncomeTaxRateContinuingOperations



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302016-12-312016-09-302016-06-302015-12-312015-09-302015-06-302014-12-312014-09-302014-06-302013-09-302013-06-302012-09-302012-06-302011-09-302010-09-302010-06-30
Value0.232-0.2190.2220.2220.1630.104999999999999980.2120.1280.2430.4010.2610.254-0.00100000000000000090.2220.205-0.008999999999999980.1610.184-0.00300000000000000270.1920.1520.2730.2860.2940.2720.2440.2690.286
Percentage of EffectiveIncomeTaxRateContinuingOperations100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

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

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

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

Share Based Compensation

us-gaap:ShareBasedCompensation



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-03-312012-03-312011-03-312010-03-312009-03-31
Value1411571621741431751982522203341131028910295958897979692959983826148494641
Percentage of ShareBasedCompensation100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Deferred Tax Liabilities

Deferred Tax Assets Net

Unrecognized Tax Benefits

Deferred Tax Assets Valuation Allowance

Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions

Operating Lease Right Of Use Asset

Cash And Cash Equivalents Period Increase Decrease

Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents



Period End2020-03-312019-12-312019-09-302019-03-312018-12-312018-09-302017-12-312016-12-31
Value1005111631947416927179401456975888229
Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:TypeOfArrangement

gild:Cashoutflowsandaccruedexpensesrelatedtocollaborativeandotherarrangements

gild:OtherCollaborationArrangements



Period End2020-03-312019-03-31
Value105187
Percentage of Cashoutflowsandaccruedexpensesrelatedtocollaborativeandotherarrangements100.0100.0

gild:IntangibleAssetsForeignCurrencyTranslationGainLoss



Period End2020-03-312019-12-312019-09-302019-06-302019-03-31
Value-143-72-9
Percentage of IntangibleAssetsForeignCurrencyTranslationGainLoss100.0100.0100.0100.0100.0

gild:Revenuesrecognizedfromperformanceobligationssatisfiedinpreviousperiods



Period End2020-03-312019-03-31
Value188155
Percentage of Revenuesrecognizedfromperformanceobligationssatisfiedinpreviousperiods100.0100.0

us-gaap:TypeOfArrangement

gild:UpfrontCollaborationandLicensingExpensesRelatedtoCollaborativeandOtherSimilarArrangements

gild:OtherCollaborationArrangements



Period End2020-03-312019-09-302019-03-312018-09-30
Value97401260
Percentage of UpfrontCollaborationandLicensingExpensesRelatedtoCollaborativeandOtherSimilarArrangements100.0100.0100.00.0

gild:Upfrontandmilestoneexpenserelatedtocollaborativeandotherarrangements



Period End2020-03-312019-12-312019-03-312018-12-31
Value111551330
Percentage of Upfrontandmilestoneexpenserelatedtocollaborativeandotherarrangements100.0100.0100.00.0

gild:Upfrontandmilestonepaymentsrelatedtocollaborativeandotherarrangements



Period End2020-03-312019-12-312019-03-312018-12-31
Value112201330
Percentage of Upfrontandmilestonepaymentsrelatedtocollaborativeandotherarrangements100.0100.0100.00.0

us-gaap:AdjustmentForAmortization



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-03-312012-03-312011-03-312010-03-312009-03-31
Value2812812812882993013013003013192452442452442552412412332372352322442262372165046624225
Percentage of AdjustmentForAmortization100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-30
Value141159160175144175190253224313114102891039595889997
Percentage of AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StatementEquityComponents

us-gaap:AdditionalPaidInCapital



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-30
Value141159160175144175190253224313114102891039595889997
Percentage of AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AmortizationOfIntangibleAssets



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-30
Value28128128829930130030121211515151717
Percentage of AmortizationOfIntangibleAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-312009-09-302009-06-30
Value1440171612211291394411111001129102121222723181618
Percentage of AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect



Period End2020-03-312019-12-312019-03-312018-12-31
Value-15802157-10133371
Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect100.0100.0100.0100.0

us-gaap:CommonStockDividendsPerShareDeclared



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-30
Value0.680.630.630.630.630.570.570.570.570.520.520.520.520.470.470.470.430.430.430.430.00.00.00.0
Percentage of CommonStockDividendsPerShareDeclared100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.00.0

us-gaap:SubsequentEventType

us-gaap:SubsequentEvent



Period End2020-02-042019-02-042018-02-062017-03-312016-02-022015-07-28
Value0.680.630.570.520.430.43
Percentage of CommonStockDividendsPerShareDeclared0.00.00.0100.00.00.0

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

us-gaap:ConcentrationRiskPercentage1

gild:AmerisourcebergenCorp, us-gaap:SalesRevenueNet, us-gaap:CustomerConcentrationRisk



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-30
Value0.220.210.20.210.20.20.210.210.2
Percentage of ConcentrationRiskPercentage1100.0100.0100.0100.0100.0100.0100.0100.0100.0

gild:CardinalHealthInc, us-gaap:SalesRevenueNet, us-gaap:CustomerConcentrationRisk



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-30
Value0.220.210.210.20.20.20.210.190.17
Percentage of ConcentrationRiskPercentage1100.0100.0105.095.2100.0100.0100.090.585.0

gild:MckessonCorp, us-gaap:SalesRevenueNet, us-gaap:CustomerConcentrationRisk



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-30
Value0.210.230.20.20.220.210.20.250.23
Percentage of ConcentrationRiskPercentage195.5109.5100.095.2110.0105.095.2119.0115.0

us-gaap:ContractWithCustomerPerformanceObligationSatisfiedInPreviousPeriod



Period End2020-03-312019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value3817115514616722297
Percentage of ContractWithCustomerPerformanceObligationSatisfiedInPreviousPeriod100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredIncomeTaxExpenseBenefit



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312011-03-312010-03-312009-03-31
Value56-82442412-3735-11805821-13115203111
Percentage of DeferredIncomeTaxExpenseBenefit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:Depreciation



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-03-312012-03-312011-03-312010-03-312009-03-31
Value686966606057575656785254494844434245413837314028242319181713
Percentage of Depreciation100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-312009-09-302009-06-30
Value24-740-5-6-131510-14-1-225-135534-62-115-1512821-40108527381-41932-3193-2786-34-85-1068354-37-47
Percentage of DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:Dividends



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-30
Value867808807810814741746747752687685685685622625631587620631639
Percentage of Dividends100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StatementEquityComponents

us-gaap:RetainedEarnings



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-30
Value867808807810814741746747752687685685685622625631587620631
Percentage of Dividends100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents



Period End2020-03-312019-12-312019-03-312018-12-31
Value-614220-39
Percentage of EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents100.0100.0100.0100.0

us-gaap:EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-06-30
Value0.210.00.210.210.210.00.210.210.35
Percentage of EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate100.00.0100.0100.0100.00.0100.0100.0100.0

us-gaap:FiniteLivedIntangibleAssetsForeignCurrencyTranslationGainLoss



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value-71-41-4-22-74
Percentage of FiniteLivedIntangibleAssetsForeignCurrencyTranslationGainLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FiniteLivedIntangibleAssetsByMajorClass

us-gaap:OtherIntangibleAssets



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value-71-41-4-22-74
Percentage of FiniteLivedIntangibleAssetsForeignCurrencyTranslationGainLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-312009-09-302009-06-302009-03-31
Value20031901-15012410235010162664208620332126367141153617392042764399450254375472551152394229337043072948107910759409519696689749828749619931159891755795
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInAccountsPayable



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-03-312012-03-312011-03-312010-03-312009-03-31
Value-109812435-201178-24-101-9285-116-137-262162-48172-239-62-33256258-21415-69-2030107176141-20
Percentage of IncreaseDecreaseInAccountsPayable100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInAccountsReceivable



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-03-312012-03-312011-03-312010-03-312009-03-31
Value376251-101100-32-113-90-176-101-281-355419-537-422-580-381191-2138004623481751-505214111723119610716389
Percentage of IncreaseDecreaseInAccountsReceivable100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInAccruedIncomeTaxesPayable



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-03-312012-03-312011-03-312010-03-312009-03-31
Value-127165381-25-24992287-1220-6185545-12096-24-19384440205-254-51425149397-1615624012-9931-14950
Percentage of IncreaseDecreaseInAccruedIncomeTaxesPayable100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInAccruedLiabilities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-03-312012-03-312011-03-312010-03-312009-03-31
Value-550335-236-71-417-190-643155164206-675328-677-632181681195155725151530756379710166173110611810
Percentage of IncreaseDecreaseInAccruedLiabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInEquitySecuritiesFvNi



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value-2839295857197-34168
Percentage of IncreaseDecreaseInEquitySecuritiesFvNi100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-03-312012-03-312011-03-312010-03-312009-03-31
Value-4682191-943-154-127-93-529-47-16632-177-265450209126-7740179-52-57-923521691877523-60
Percentage of IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncrementalCommonSharesAttributableToShareBasedPaymentArrangements



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-312009-09-302009-06-30
Value80077-11110130131012-2131416-121232603131353838361614141314151416202323
Percentage of IncrementalCommonSharesAttributableToShareBasedPaymentArrangements100.00.00.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IndefiniteLivedIntangibleAssetsByMajorClass

us-gaap:IndefiniteLivedIntangibleAssetsForeignCurrencyTranslationGainLoss

us-gaap:InProcessResearchAndDevelopment



Period End2020-03-312019-12-312019-09-302019-06-302019-03-31
Value-72-31-5
Percentage of IndefiniteLivedIntangibleAssetsForeignCurrencyTranslationGainLoss100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentBeforeReclassificationAdjustmentsNetOfTax



Period End2020-03-312019-03-31
Value-2330
Percentage of OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentBeforeReclassificationAdjustmentsNetOfTax100.0100.0

us-gaap:OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-30
Value-34041930183134-36-94184-67187-15123152-24-310-3600104-213030-270
Percentage of OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StatementEquityComponents

us-gaap:OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax

us-gaap:AccumulatedNetGainLossFromDesignatedOrQualifyingCashFlowHedges



Period End2020-03-312019-12-312019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312014-12-312014-09-302014-06-302014-03-31
Value57-27292861-657-61-26-76-115-87254173223311
Percentage of OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AccumulatedNetUnrealizedInvestmentGainLoss



Period End2020-03-312019-12-312019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312014-12-312014-09-302014-06-302014-03-31
Value-23149301831-6-36-93185-58184-1520010
Percentage of OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax-40.4-3.7169.0107.129.5-516.7-10.559.0357.7-243.450.4-211.5-59.8-0.6-0.45.311.6

us-gaap:AccumulatedOtherComprehensiveIncome



Period End2020-03-312019-12-312019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value-5-18679582633-90-115105-14421
Percentage of OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax-8.83.7296.6282.195.1-433.357.9147.5442.3-138.2125.2-24.1

us-gaap:AccumulatedTranslationAdjustment



Period End2020-03-312019-12-312019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312014-12-312014-09-302014-06-302014-03-31
Value-3925821-211-1874-429-76216-5-1015
Percentage of OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax-68.4-92.627.675.0-34.4-16.7-31.6-11.5-15.45.3-25.287.485.0-3.4-4.53.8457.2

us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value34-5738-34-1472163-136-51-102
Percentage of OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAfterTax



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value57-277012861-6118-61-26-76-115
Percentage of OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAfterTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAndTax



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value66-226912862-6119-61-26-78-117
Percentage of OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAndTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationAfterTax



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value233032352914-8-45-48-32-25-13
Percentage of OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationAfterTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationBeforeTax



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value273131362914-8-45-48-32-26-13
Percentage of OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationBeforeTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossNetOfTax



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-30
Value-39-3215-28504434172-42-84129-140-18386-62118-252-79-80-2922381262155428-72966-9690-24117
Percentage of OtherComprehensiveIncomeLossNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StatementEquityComponents

us-gaap:AccumulatedNetGainLossFromDesignatedOrQualifyingCashFlowHedges



Period End2020-03-312019-12-312019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312014-12-312014-09-302014-06-302014-03-312013-03-31
Value34-57-35-1472150-136-51-102-129321133226512273
Percentage of OtherComprehensiveIncomeLossNetOfTax-87.2178.1125.0-2.0106.85.987.231.0-7.1-39.572.9716.783.2105.1105.195.180.0110.8

us-gaap:AccumulatedNetUnrealizedInvestmentGainLoss



Period End2020-03-312019-12-312019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312014-12-312014-09-302014-06-302014-03-312013-03-31
Value-34049301831-2-36-94184-67187-15100101
Percentage of OtherComprehensiveIncomeLossNetOfTax87.2-0.0-175.060.040.991.2-1.285.7111.9142.647.9-1038.9-39.1-0.4-0.42.7-0.22.7

us-gaap:AccumulatedOtherComprehensiveIncome



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-30
Value-39-3215-28504434172-42-84129-140-18386-62118-252-79-80
Percentage of OtherComprehensiveIncomeLossNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AccumulatedTranslationAdjustment



Period End2020-03-312019-12-312019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312014-12-312014-09-302014-06-302014-03-312013-03-31
Value-3925821-211-1874-429-76216-5-1015-8
Percentage of OtherComprehensiveIncomeLossNetOfTax100.0-78.1-28.642.0-47.72.9-10.5-16.7-4.8-3.1-20.7422.256.0-4.7-4.72.220.2-13.5

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-30
Value11100000-40119-3-1620-1000000000-20
Percentage of OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax100.0100.00.00.00.00.00.0100.00.0100.0100.0100.0100.0100.0100.0100.00.0100.00.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherNoncashIncomeExpense



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-03-312012-03-312011-03-31
Value-59-25-93-223157-42135-100-49-77-38-150-39-1778-1219-528-7-325-33-18-3-8-137
Percentage of OtherNoncashIncomeExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PaymentsForProceedsFromOtherInvestingActivities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value0186-10464238182-948220
Percentage of PaymentsForProceedsFromOtherInvestingActivities0.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PaymentsToAcquireAvailableForSaleSecurities



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-03-312012-03-312011-03-312010-03-312009-03-31
Value131587035103006722377716123974501554497873482573878597045497749485444438524625748825559462015191502879
Percentage of PaymentsToAcquireAvailableForSaleSecurities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0

us-gaap:PaymentsToAcquireOtherInvestments



Period End2020-03-312019-12-312019-03-312018-12-312013-03-312012-03-31
Value852256214025
Percentage of PaymentsToAcquireOtherInvestments100.0100.0100.0100.00.0100.0

us-gaap:ProceedsFromIssuanceOfCommonStock



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-03-312012-03-312011-03-312010-03-312009-03-31
Value17727413810350804811151642396286028923879841185511254108861325810340
Percentage of ProceedsFromIssuanceOfCommonStock100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-03-312012-03-312011-03-312010-03-312009-03-31
Value3449475976103518651173155482677747623657222212087345693473414433482231103825831360169171127
Percentage of ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0

us-gaap:ProceedsFromPaymentsForOtherFinancingActivities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312012-03-312011-03-31
Value-86-17-30-7-68-22-40-10-414-189-20-63-58-27-110-52-8711460
Percentage of ProceedsFromPaymentsForOtherFinancingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0

us-gaap:ProceedsFromSaleOfAvailableForSaleSecurities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-03-312012-03-312011-03-312010-03-312009-03-31
Value96563001295898957532152545522114741337445631732663379336242959232813218942493292381558365561285273587
Percentage of ProceedsFromSaleOfAvailableForSaleSecurities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StatementEquityComponents

us-gaap:ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax

us-gaap:AccumulatedNetGainLossFromDesignatedOrQualifyingCashFlowHedges



Period End2020-03-312019-12-312019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312014-12-312014-09-302014-06-302014-03-31
Value2330642914-8-93-48-32-25-13425140-2-20-21
Percentage of ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AccumulatedNetUnrealizedInvestmentGainLoss



Period End2020-03-312019-12-312019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312014-12-312014-09-302014-06-302014-03-31
Value1110000-40119-3150000
Percentage of ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax47.83.30.00.00.0-0.04.3-0.0-3.1-4.0-69.2-7.129.4-1.1-2.1-0.9-0.9

us-gaap:AccumulatedOtherComprehensiveIncome



Period End2020-03-312019-12-312019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value3431642914-8-97-48-31-24-439
Percentage of ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax147.8103.3100.0100.0100.0100.0104.3100.096.996.030.892.9

us-gaap:RepaymentsOfDebt



Period End2020-03-312019-03-312018-03-312017-03-312016-03-312015-03-312013-03-312012-03-31
Value500750450030126199347350
Percentage of RepaymentsOfDebt100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StatementEquityComponents

us-gaap:StockIssuedDuringPeriodSharesEmployeeStockPurchasePlans

us-gaap:CommonStock



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value1000000.00.01000000.00.01000000.01000000.00.00.01000000.0
Percentage of StockIssuedDuringPeriodSharesEmployeeStockPurchasePlans100.00.0100.00.0100.0100.00.00.0100.0

us-gaap:StatementEquityComponents

us-gaap:StockIssuedDuringPeriodSharesShareBasedCompensation

us-gaap:CommonStock



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value722242435
Percentage of StockIssuedDuringPeriodSharesShareBasedCompensation100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StockIssuedDuringPeriodValueEmployeeStockPurchasePlan



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-30
Value66027063043048036047036048034
Percentage of StockIssuedDuringPeriodValueEmployeeStockPurchasePlan100.00.0100.00.0100.00.0100.00.0100.00.0100.00.0100.00.0100.00.0100.00.0100.0

us-gaap:StatementEquityComponents

us-gaap:AdditionalPaidInCapital



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-30
Value66027063043048036047036048034
Percentage of StockIssuedDuringPeriodValueEmployeeStockPurchasePlan100.00.0100.00.0100.00.0100.00.0100.00.0100.00.0100.00.0100.00.0100.00.0100.0

us-gaap:StockIssuedDuringPeriodValueShareBasedCompensation



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-30
Value1112610414130584564512920463524
Percentage of StockIssuedDuringPeriodValueShareBasedCompensation100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StatementEquityComponents

us-gaap:AdditionalPaidInCapital



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-30
Value1112610414130584564512920463524
Percentage of StockIssuedDuringPeriodValueShareBasedCompensation100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ShareRepurchaseProgram

us-gaap:StockRepurchasedAndRetiredDuringPeriodShares

gild:A2016StockRepurchaseProgram



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-09-302016-06-30
Value1939126713242281210
Percentage of StockRepurchasedAndRetiredDuringPeriodShares100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ShareRepurchaseProgram

us-gaap:StockRepurchasedAndRetiredDuringPeriodValue

gild:A2016StockRepurchaseProgram



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-09-302016-06-30
Value13002235888344494501000215215313056510001000
Percentage of StockRepurchasedAndRetiredDuringPeriodValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StatementEquityComponents

us-gaap:StockRepurchasedDuringPeriodShares

us-gaap:CommonStock



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value2024913156714
Percentage of StockRepurchasedDuringPeriodShares100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StockRepurchasedDuringPeriodValue



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value14141202525939039854874591121
Percentage of StockRepurchasedDuringPeriodValue100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StatementEquityComponents

us-gaap:AdditionalPaidInCapital



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value58411263641171836
Percentage of StockRepurchasedDuringPeriodValue4.13.34.44.44.04.23.53.93.2

us-gaap:RetainedEarnings



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value13561162415678679444704411085
Percentage of StockRepurchasedDuringPeriodValue95.996.795.695.696.095.896.596.196.8

gild:Accruedgovernmentandotherrebates



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302014-12-31
Value345734733652358539743928445646845048470446724682471250215482544747664118471343672316
Percentage of Accruedgovernmentandotherrebates100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

gild:AllowanceforAccountsReceivableandChargebacks



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312014-12-312013-12-312012-12-31
Value793758613610669583514591554455595636557763935143512771032356334261
Percentage of AllowanceforAccountsReceivableandChargebacks100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

gild:InventoryNetAndInventoryNoncurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312013-12-31
Value20212067255725952628263029592831287829023171311431653164296628032731272625642504224018752056
Percentage of InventoryNetAndInventoryNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:LitigationCase, us-gaap:SubsequentEventType

gild:JudgmentEnhancedDamagesonPastSales

gild:Juno, us-gaap:SubsequentEvent



Period End2020-04-08
Value0.5
Percentage of JudgmentEnhancedDamagesonPastSales100.0

us-gaap:LitigationCase, us-gaap:SubsequentEventType

gild:JudgmentRoyaltyRateonFutureSales

gild:Juno, us-gaap:SubsequentEvent



Period End2020-04-08
Value0.276
Percentage of JudgmentRoyaltyRateonFutureSales100.0

us-gaap:IndefiniteLivedIntangibleAssetsByMajorClass

gild:TotalIndefiniteLivedIntangibleAssetsExcludingGoodwill

gild:IndefinitelivedIntangibleAssetsIPRD



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-31
Value12401242204020432042204428672750
Percentage of TotalIndefiniteLivedIntangibleAssetsExcludingGoodwill100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AccruedIncomeTaxesNoncurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value5595611558525837580959226018600168326794203719421848175316211527138512431027883713562417338226162119122110115128126140135117117107
Percentage of AccruedIncomeTaxesNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AccruedLiabilitiesCurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312018-01-012017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302014-12-312012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312008-12-31
Value283330742785276023483139233326072414325533702482299126262790347828302925317227211873624593502495618566437443373388384245
Percentage of AccruedLiabilitiesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AdditionalPaidInCapital



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312008-12-31
Value3311305128702684249422822118184415641264906733616454321632516444285027242391214359305746538651895995582956495435521351004903480947834726464845754540456843763930
Percentage of AdditionalPaidInCapital100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AllowanceForDoubtfulAccountsReceivable



Period End2020-03-312020-01-01
Value5547
Percentage of AllowanceForDoubtfulAccountsReceivable100.0100.0

us-gaap:FairValueByAssetClass

us-gaap:AssetsFairValueDisclosure

gild:OtherEquitySecurities



Period End2020-03-312019-12-312019-09-302018-12-31
Value114741103940545688
Percentage of AssetsFairValueDisclosure100.0100.0100.0100.0

us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency

us-gaap:FairValueInputsLevel1, us-gaap:FairValueMeasurementsRecurring



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302014-12-31
Value135461347289878251980910279917711245936495261394310831136481150513052101016469146161546877428343
Percentage of AssetsFairValueDisclosure118.1122.0221.70.00.0180.70.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:FairValueInputsLevel2, us-gaap:FairValueMeasurementsRecurring



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302014-12-31
Value12924141041628221207198282027320420192232077425539262512457419002192061672113053119349180808055571685
Percentage of AssetsFairValueDisclosure112.6127.8401.60.00.0356.40.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:FairValueByMeasurementBasis, us-gaap:FairValueByMeasurementFrequency

us-gaap:EstimateOfFairValueFairValueDisclosure, us-gaap:FairValueMeasurementsRecurring



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302014-12-31
Value264702757625269294582963730552295973046830138350654019435405326503071129773231541840323796235481329910028
Percentage of AssetsFairValueDisclosure230.7249.8623.30.00.0537.10.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312014-09-302013-12-31
Value2724411232401
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FinancialInstrument

gild:ResidentialMortgageAndAssetBackedSecurities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value0.00.00.00.00.00.00.00.00.01000000.0
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax0.00.00.00.00.00.00.00.00.025.0

us-gaap:CorporateDebtSecurities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value3233112323
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax11.1100.075.075.0100.0100.0100.0100.0100.075.0

us-gaap:USTreasurySecurities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value24011000000
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax88.90.025.025.00.00.00.00.00.00.0

us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312014-12-312014-09-302013-12-31
Value59137235372104136102310
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FinancialInstrument

gild:ResidentialMortgageAndAssetBackedSecurities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value40114812172115
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax6.80.033.314.317.415.116.716.315.414.7

us-gaap:CorporateDebtSecurities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value55114122937557446
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax93.2100.033.357.152.254.751.452.954.445.1

us-gaap:ForeignGovernmentDebtSecurities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value0000122344
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax0.00.00.00.04.33.82.82.92.93.9

us-gaap:USGovernmentAgenciesDebtSecurities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value0000256898
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax0.00.00.00.08.79.48.37.76.67.8

us-gaap:USTreasurySecurities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value00124915212829
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax0.00.033.328.617.417.020.820.220.628.4

us-gaap:AvailableForSaleDebtSecuritiesAmortizedCostBasis



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302012-12-31
Value149521649919052250622453724216235232266224788296856538674155101947231026352192
Percentage of AvailableForSaleDebtSecuritiesAmortizedCostBasis100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FinancialInstrument

gild:ResidentialMortgageAndAssetBackedSecurities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value26091231537104015322049267434274072
Percentage of AvailableForSaleDebtSecuritiesAmortizedCostBasis1.70.61.22.14.26.38.711.813.813.7

us-gaap:CertificatesOfDeposit



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value3201351741525385421143614392314539085131
Percentage of AvailableForSaleDebtSecuritiesAmortizedCostBasis21.421.321.821.517.218.018.713.915.817.3

us-gaap:CorporateDebtSecurities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value928792031047213272125761309512792121441204414790
Percentage of AvailableForSaleDebtSecuritiesAmortizedCostBasis62.155.855.053.051.354.154.453.648.649.8

us-gaap:ForeignGovernmentDebtSecurities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value22174192420453307262407563668
Percentage of AvailableForSaleDebtSecuritiesAmortizedCostBasis0.11.11.01.71.81.31.11.82.32.3

us-gaap:USGovernmentAgenciesDebtSecurities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value1341081114515311446943938880934934
Percentage of AvailableForSaleDebtSecuritiesAmortizedCostBasis0.96.66.06.15.93.94.03.93.83.1

us-gaap:USTreasurySecurities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value2048243328603917478639783090341239124090
Percentage of AvailableForSaleDebtSecuritiesAmortizedCostBasis13.714.715.015.619.516.413.115.115.813.8

us-gaap:AvailableForSaleSecuritiesDebtSecurities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-312015-12-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-31
Value1492016500190532505924515241642345322561246543430129863235209625653767435511194823112635240021942210190356690724956489863414949
Percentage of AvailableForSaleSecuritiesDebtSecurities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ContractWithCustomerAssetNet



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-01-01
Value140144160149140125117126132
Percentage of ContractWithCustomerAssetNet100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AdjustmentsForNewAccountingPronouncements

us-gaap:CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption

us-gaap:AccountingStandardsUpdate201613



Period End2020-01-01
Value-7
Percentage of CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption100.0

us-gaap:AdjustmentsForNewAccountingPronouncements, us-gaap:StatementEquityComponents

us-gaap:AccountingStandardsUpdate201613, us-gaap:RetainedEarnings



Period End2020-01-01
Value-7
Percentage of CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption100.0

us-gaap:DebtInstrumentCarryingAmount



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value240972459324588260832657827322
Percentage of DebtInstrumentCarryingAmount100.0100.0100.0100.0100.0100.0

us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementBasis

us-gaap:FairValueInputsLevel2, us-gaap:CarryingReportedAmountFairValueDisclosure



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value24100246002460026100266002730033500
Percentage of DebtInstrumentCarryingAmount100.0100.0100.0100.1100.199.90.0

us-gaap:DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger



Period End2020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value6594344952907518736181089168
Percentage of DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FinancialInstrument

gild:ResidentialMortgageAndAssetBackedSecurities



Period End2020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value61714378171186130011671206
Percentage of DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger100.028.812.715.415.817.714.413.2

us-gaap:CorporateDebtSecurities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value04297198829384204360234493561
Percentage of DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger0.00.050.057.655.555.948.942.538.8

us-gaap:DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss



Period End2020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value0152252648380
Percentage of DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss0.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FinancialInstrument

gild:ResidentialMortgageAndAssetBackedSecurities



Period End2020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value01148111211
Percentage of DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss0.0100.020.018.215.417.214.513.8

us-gaap:CorporateDebtSecurities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value00031128314032
Percentage of DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss0.00.00.060.050.053.848.448.240.0

us-gaap:DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months



Period End2020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value586838172759468828044669537011149
Percentage of DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FinancialInstrument

gild:ResidentialMortgageAndAssetBackedSecurities



Period End2020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value22910268519240911762245
Percentage of DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months3.90.30.91.86.88.821.920.1

us-gaap:CorporateDebtSecurities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value56391866154192210491600263637747674
Percentage of DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months96.10.040.433.422.457.156.570.368.8

us-gaap:DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss



Period End2020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value59221182122
Percentage of DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FinancialInstrument

gild:ResidentialMortgageAndAssetBackedSecurities



Period End2020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value40000154
Percentage of DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss6.80.00.00.00.012.523.818.2

us-gaap:CorporateDebtSecurities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value551111161514
Percentage of DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss93.20.050.050.0100.0100.075.071.463.6

us-gaap:DebtSecuritiesAvailableForSaleUnrealizedLossPosition



Period End2020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value587444116208997810322120301347820317
Percentage of DebtSecuritiesAvailableForSaleUnrealizedLossPosition100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FinancialInstrument

gild:ResidentialMortgageAndAssetBackedSecurities



Period End2020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value2351814639021378170923433451
Percentage of DebtSecuritiesAvailableForSaleUnrealizedLossPosition4.04.17.59.013.414.217.417.0

us-gaap:CorporateDebtSecurities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value5639187018382910398758046238722311235
Percentage of DebtSecuritiesAvailableForSaleUnrealizedLossPosition96.00.041.746.940.056.251.953.655.3

us-gaap:DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss



Period End2020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value5937235372104102
Percentage of DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FinancialInstrument

gild:ResidentialMortgageAndAssetBackedSecurities



Period End2020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value41148121715
Percentage of DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss6.833.314.317.415.116.716.314.7

us-gaap:CorporateDebtSecurities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value551141229375546
Percentage of DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss93.20.033.357.152.254.751.452.945.1

us-gaap:DerivativeAssetFairValueGrossAssetIncludingNotSubjectToMasterNettingArrangement



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value76378048777813
Percentage of DerivativeAssetFairValueGrossAssetIncludingNotSubjectToMasterNettingArrangement100.0100.0100.0100.0100.0100.0100.0

us-gaap:BalanceSheetLocation, us-gaap:HedgingDesignation

us-gaap:OtherCurrentAssets, us-gaap:DesignatedAsHedgingInstrument



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value6836754774732
Percentage of DerivativeAssetFairValueGrossAssetIncludingNotSubjectToMasterNettingArrangement89.597.393.897.996.193.615.4

us-gaap:OtherCurrentAssets, us-gaap:Nondesignated



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value11000010
Percentage of DerivativeAssetFairValueGrossAssetIncludingNotSubjectToMasterNettingArrangement1.32.70.00.00.00.076.9

us-gaap:OtherNoncurrentAssets, us-gaap:DesignatedAsHedgingInstrument



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value7051351
Percentage of DerivativeAssetFairValueGrossAssetIncludingNotSubjectToMasterNettingArrangement9.20.06.22.13.96.47.7

us-gaap:HedgingDesignation

us-gaap:DesignatedAsHedgingInstrument



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value7536804877783
Percentage of DerivativeAssetFairValueGrossAssetIncludingNotSubjectToMasterNettingArrangement98.797.3100.0100.0100.0100.023.1

us-gaap:Nondesignated



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value11000010
Percentage of DerivativeAssetFairValueGrossAssetIncludingNotSubjectToMasterNettingArrangement1.32.70.00.00.00.076.9

us-gaap:DerivativeAssetFairValueOffsetAgainstCollateralNetOfNotSubjectToMasterNettingArrangementPolicyElection



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302016-12-31
Value713179427577364405622299
Percentage of DerivativeAssetFairValueOffsetAgainstCollateralNetOfNotSubjectToMasterNettingArrangementPolicyElection100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0

us-gaap:DerivativeAssetNotOffsetPolicyElectionDeduction



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302016-12-31
Value5616216948242937
Percentage of DerivativeAssetNotOffsetPolicyElectionDeduction100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DerivativeAssets



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-31
Value763780487778425341330511673366591742102673426073492152211138414314
Percentage of DerivativeAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DerivativeFairValueOfDerivativeAsset



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302009-12-31
Value76378048777842534133051167336659174210267342607349215221113841431457134511004628645120326
Percentage of DerivativeFairValueOfDerivativeAsset100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DerivativeFairValueOfDerivativeLiability



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302009-12-31
Value58162161111093101551737162193140413539903407299611318653441853914011838581047
Percentage of DerivativeFairValueOfDerivativeLiability100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DerivativeLiabilities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-31
Value581621611110931015517371621931404135399034072996113-18-65
Percentage of DerivativeLiabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DerivativeLiabilityFairValueGrossLiabilityIncludingNotSubjectToMasterNettingArrangement



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value58162193
Percentage of DerivativeLiabilityFairValueGrossLiabilityIncludingNotSubjectToMasterNettingArrangement100.0100.0100.0100.0100.0100.0100.0

us-gaap:BalanceSheetLocation, us-gaap:HedgingDesignation

us-gaap:OtherCurrentLiabilities, us-gaap:DesignatedAsHedgingInstrument



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value46141189
Percentage of DerivativeLiabilityFairValueGrossLiabilityIncludingNotSubjectToMasterNettingArrangement80.075.0100.066.750.0100.095.7

us-gaap:OtherCurrentLiabilities, us-gaap:Nondesignated



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value0.00.00.00.01000000.00.01000000.0
Percentage of DerivativeLiabilityFairValueGrossLiabilityIncludingNotSubjectToMasterNettingArrangement0.00.00.00.050.00.01.1

us-gaap:OtherNoncurrentLiabilities, us-gaap:DesignatedAsHedgingInstrument



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value1202003
Percentage of DerivativeLiabilityFairValueGrossLiabilityIncludingNotSubjectToMasterNettingArrangement20.025.00.033.30.00.03.2

us-gaap:HedgingDesignation

us-gaap:DesignatedAsHedgingInstrument



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value58161192
Percentage of DerivativeLiabilityFairValueGrossLiabilityIncludingNotSubjectToMasterNettingArrangement100.0100.0100.0100.050.0100.098.9

us-gaap:Nondesignated



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value0.00.00.00.01000000.00.01000000.0
Percentage of DerivativeLiabilityFairValueGrossLiabilityIncludingNotSubjectToMasterNettingArrangement0.00.00.00.050.00.01.1

us-gaap:DerivativeLiabilityFairValueOffsetAgainstCollateralNetOfNotSubjectToMasterNettingArrangementPolicyElection



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302016-12-31
Value010000021068577260
Percentage of DerivativeLiabilityFairValueOffsetAgainstCollateralNetOfNotSubjectToMasterNettingArrangementPolicyElection0.0100.00.00.00.00.00.0100.0100.0100.0100.0100.00.0

us-gaap:DerivativeLiabilityNotOffsetPolicyElectionDeduction



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302016-12-31
Value5716216948242937
Percentage of DerivativeLiabilityNotOffsetPolicyElectionDeduction100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DerivativeNotionalAmount



Period End2020-03-312019-12-312019-09-302018-12-31
Value3000290032002200
Percentage of DerivativeNotionalAmount100.0100.0100.0100.0

us-gaap:EmployeeRelatedLiabilitiesCurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312008-12-31
Value380599492433325555436424324455339318244398292235380288268226316267220181243228197152236182144136173149129119147132106111132103
Percentage of EmployeeRelatedLiabilitiesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:BalanceSheetLocation, us-gaap:FairValueByAssetClass

us-gaap:EquitySecuritiesFvNi

us-gaap:CashAndCashEquivalents, gild:OtherEquitySecurities



Period End2020-03-312019-12-312019-09-302018-12-31
Value7763706935995305
Percentage of EquitySecuritiesFvNi100.0100.0100.0100.0

us-gaap:OtherNoncurrentAssets, gild:OtherEquitySecurities



Period End2020-03-312019-12-312019-09-302018-12-31
Value34723651163142
Percentage of EquitySecuritiesFvNi44.751.64.52.7

us-gaap:PrepaidExpensesAndOtherCurrentAssets, gild:OtherEquitySecurities



Period End2020-03-312019-12-312019-09-302018-12-31
Value239319292241
Percentage of EquitySecuritiesFvNi3.14.58.14.5

us-gaap:FairValueByAssetClass, us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency

gild:DeferredCompensationPlan, us-gaap:FairValueInputsLevel1, us-gaap:FairValueMeasurementsRecurring



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value156171159156150124139131116
Percentage of EquitySecuritiesFvNi2.02.44.40.00.02.30.00.00.0

gild:EquityinvestmentinGalapagos, us-gaap:FairValueInputsLevel1, us-gaap:FairValueMeasurementsRecurring



Period End2020-03-312019-12-312019-09-302018-12-31
Value331634772082622
Percentage of EquitySecuritiesFvNi42.749.257.811.7

us-gaap:EquitySecurities, us-gaap:FairValueInputsLevel1, us-gaap:FairValueMeasurementsRecurring



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value23932228711721099881825663635
Percentage of EquitySecuritiesFvNi3.14.68.00.00.016.60.00.00.0

us-gaap:EquitySecurities, us-gaap:FairValueInputsLevel2, us-gaap:FairValueMeasurementsRecurring



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value00916180000
Percentage of EquitySecuritiesFvNi0.00.00.30.00.00.00.00.00.0

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



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value776370693599300737785305513870604714
Percentage of EquitySecuritiesFvNi100.0100.0100.00.00.0100.00.00.00.0

us-gaap:FairValueByAssetClass, us-gaap:FairValueByMeasurementBasis, us-gaap:FairValueByMeasurementFrequency

gild:DeferredCompensationPlan, us-gaap:EstimateOfFairValueFairValueDisclosure, us-gaap:FairValueMeasurementsRecurring



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value156171159156150124139131116
Percentage of EquitySecuritiesFvNi2.02.44.40.00.02.30.00.00.0

gild:EquityinvestmentinGalapagos, us-gaap:EstimateOfFairValueFairValueDisclosure, us-gaap:FairValueMeasurementsRecurring



Period End2020-03-312019-12-312019-09-302018-12-31
Value331634772082622
Percentage of EquitySecuritiesFvNi42.749.257.811.7

us-gaap:EquitySecurities, us-gaap:EstimateOfFairValueFairValueDisclosure, us-gaap:FairValueMeasurementsRecurring



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value23932229611881117881825663635
Percentage of EquitySecuritiesFvNi3.14.68.20.00.016.60.00.00.0

us-gaap:MoneyMarketFunds, us-gaap:EstimateOfFairValueFairValueDisclosure, us-gaap:FairValueMeasurementsRecurring



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value776370693599300737785305513870604714
Percentage of EquitySecuritiesFvNi100.0100.0100.00.00.0100.00.00.00.0

us-gaap:FiniteLivedIntangibleAssetsAccumulatedAmortization



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302012-12-312011-12-312010-12-312010-09-302009-12-31
Value64376156587555945306500747064405410538043521331231022892267824682258204818411635142812229897875873883082872441791099449
Percentage of FiniteLivedIntangibleAssetsAccumulatedAmortization100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FiniteLivedIntangibleAssetsByMajorClass

gild:AxicabtageneciloleucelDLBCL



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-31
Value847761675588502416330244158720
Percentage of FiniteLivedIntangibleAssetsAccumulatedAmortization13.212.411.510.59.58.37.05.53.81.90.0

gild:IntangibleAssetSofosbuvir



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312012-12-31
Value44284253407839033729355433793205303028552680250523302156198118061631145612811106932757582407233580
Percentage of FiniteLivedIntangibleAssetsAccumulatedAmortization68.869.169.469.870.371.071.872.873.875.176.175.675.174.674.073.272.271.169.667.665.361.958.951.839.615.00.0

gild:Ranexa



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312012-12-31
Value688688688688688678650622594566541517492467437413388363341320298277243226208190133
Percentage of FiniteLivedIntangibleAssetsAccumulatedAmortization10.711.211.712.313.013.513.814.114.514.915.415.615.916.116.316.717.217.718.519.620.922.724.628.735.549.154.6

us-gaap:OtherIntangibleAssets



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312012-12-31
Value4744544344153873593473343233113002902802692602492392292192091981881621531461815
Percentage of FiniteLivedIntangibleAssetsAccumulatedAmortization7.47.47.47.47.37.27.47.67.98.28.58.89.09.39.710.110.611.211.912.813.915.416.519.524.94.76.3

us-gaap:FiniteLivedIntangibleAssetsGross



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302012-12-312012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302009-12-31
Value1870618706187061870618706187041815418154181541815411863118631186311863118631186311863118631186311863118631186311863117141171411714994994994780976814831848973973973
Percentage of FiniteLivedIntangibleAssetsGross100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FiniteLivedIntangibleAssetsByMajorClass

gild:AxicabtageneciloleucelDLBCL



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-31
Value62006200620062006200620062006200620062000
Percentage of FiniteLivedIntangibleAssetsGross33.133.133.133.133.133.134.234.234.234.20.0

gild:IntangibleAssetSofosbuvir



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312012-12-31
Value10720107201072010720107201072010720107201072010720107201072010720107201072010720107201072010720107201072010720107201072010720107200
Percentage of FiniteLivedIntangibleAssetsGross57.357.357.357.357.357.359.159.159.159.190.490.490.490.490.490.490.490.490.490.490.490.490.491.591.591.50.0

gild:Ranexa



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312012-12-31
Value688688688688688688688688688688688688688688688688688688688688688688688688688688688
Percentage of FiniteLivedIntangibleAssetsGross3.73.73.73.73.73.73.83.83.83.85.85.85.85.85.85.85.85.85.85.85.85.85.85.95.95.969.2

us-gaap:OtherIntangibleAssets



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312012-12-31
Value1098109810981098109810965465465465464554554554554554554554554554554554554543053054242
Percentage of FiniteLivedIntangibleAssetsGross5.95.95.95.95.95.93.03.03.03.03.83.83.83.83.83.83.83.83.83.83.83.83.82.62.60.44.3

us-gaap:FairValueByAssetClass, us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency

us-gaap:ForeignCurrencyContractAssetFairValueDisclosure

gild:ForeignCurrencyDerivativeContracts, us-gaap:FairValueInputsLevel2, us-gaap:FairValueMeasurementsRecurring



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value7637804877784253413
Percentage of ForeignCurrencyContractAssetFairValueDisclosure100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FairValueByAssetClass, us-gaap:FairValueByMeasurementBasis, us-gaap:FairValueByMeasurementFrequency

gild:ForeignCurrencyDerivativeContracts, us-gaap:EstimateOfFairValueFairValueDisclosure, us-gaap:FairValueMeasurementsRecurring



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value7637804877784253413
Percentage of ForeignCurrencyContractAssetFairValueDisclosure100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FairValueByAssetClass, us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency

us-gaap:ForeignCurrencyContractsLiabilityFairValueDisclosure

gild:ForeignCurrencyDerivativeContracts, us-gaap:FairValueInputsLevel2, us-gaap:FairValueMeasurementsRecurring



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value58162161111093
Percentage of ForeignCurrencyContractsLiabilityFairValueDisclosure100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FairValueByAssetClass, us-gaap:FairValueByMeasurementBasis, us-gaap:FairValueByMeasurementFrequency

gild:ForeignCurrencyDerivativeContracts, us-gaap:EstimateOfFairValueFairValueDisclosure, us-gaap:FairValueMeasurementsRecurring



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value58162161111093
Percentage of ForeignCurrencyContractsLiabilityFairValueDisclosure100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IndefiniteLivedIntangibleAssetsByMajorClass

us-gaap:IndefiniteLivedIntangibleAssetsExcludingGoodwill

gild:IndefinitelivedIntangibleAssetsIPRD



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-31
Value12471247204720472047204728672750
Percentage of IndefiniteLivedIntangibleAssetsExcludingGoodwill100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IntangibleAssetsGrossExcludingGoodwill



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-31
Value1995319953207532075320753207512102120904
Percentage of IntangibleAssetsGrossExcludingGoodwill100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:InterestReceivableCurrent



Period End2020-03-312019-12-31
Value6037
Percentage of InterestReceivableCurrent100.0100.0

us-gaap:InventoryFinishedGoodsNetOfReserves



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302009-12-31
Value596549524498501507574604707670797857859928891996731852744592441466450559547593485597577559411408229225295384448341439375326
Percentage of InventoryFinishedGoodsNetOfReserves100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:InventoryNoncurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312013-12-31
Value103511451675171117301816214319721993210120271706169115771066941851771576465332489359
Percentage of InventoryNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:InventoryRawMaterialsNetOfReserves



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302009-12-31
Value1237134817761832186018882144196018651880170114901470161015221277123913321198120612199099569449991049919884693826826903584697866665559408441540333
Percentage of InventoryRawMaterialsNetOfReserves100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:InventoryWorkInProcessNetOfReserves



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302009-12-31
Value188170257265267235241267306352673767836626553530761542622706580500501563592412540453529358378292603466175271296454392440392
Percentage of InventoryWorkInProcessNetOfReserves100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency

us-gaap:LiabilitiesFairValueDisclosure

us-gaap:FairValueInputsLevel1, us-gaap:FairValueMeasurementsRecurring



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302014-12-31
Value156171159156150124139131126116110101968482767466616354
Percentage of LiabilitiesFairValueDisclosure100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FairValueInputsLevel2, us-gaap:FairValueMeasurementsRecurring



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302014-12-31
Value581621611110931015517371621939324135390
Percentage of LiabilitiesFairValueDisclosure3.24.70.63.81.30.84.38.487.380.291.854.517.744.0197.6253.91259.562.157.461.90.0

us-gaap:FairValueInputsLevel3, us-gaap:FairValueMeasurementsRecurring



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302014-12-31
Value00000000001623252525313359127140133
Percentage of LiabilitiesFairValueDisclosure0.00.00.00.00.00.00.00.00.00.014.522.826.029.830.540.844.689.4208.2222.2246.3

us-gaap:FairValueByMeasurementBasis, us-gaap:FairValueByMeasurementFrequency

us-gaap:EstimateOfFairValueFairValueDisclosure, us-gaap:FairValueMeasurementsRecurring



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302014-12-31
Value1611791601621521251451422362092271791381462693001039166223242187
Percentage of LiabilitiesFairValueDisclosure103.2104.7100.6103.8101.3100.8104.3108.4187.3180.2206.4177.2143.8173.8328.0394.71404.1251.5365.6384.1346.3

us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementBasis

us-gaap:LongTermDebtFairValue

us-gaap:FairValueInputsLevel2, us-gaap:EstimateOfFairValueFairValueDisclosure



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value277002730027200280002730027100275002930035500
Percentage of LongTermDebtFairValue100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:LitigationCase, us-gaap:Range

us-gaap:LossContingencyEstimateOfPossibleLoss

gild:Juno, srt:Maximum



Period End2020-03-312019-12-31
Value12001600
Percentage of LossContingencyEstimateOfPossibleLoss100.0100.0

us-gaap:MarketableSecuritiesCurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312008-12-31
Value1073412721133821594310977121491389712683163551792216879123843830366624572267200417561749119465910110768641878581448201613471364117511901284518715384330
Percentage of MarketableSecuritiesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:MarketableSecuritiesNoncurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312008-12-31
Value352914882195305122211423237857398104111841297315480199022048519345158641300311601940060563220159813757823894396887199555644863322432283344321927442216296722471449
Percentage of MarketableSecuritiesNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FairValueByAssetClass, us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency

us-gaap:OtherLiabilitiesFairValueDisclosure

gild:DeferredCompensationPlan, us-gaap:FairValueInputsLevel1, us-gaap:FairValueMeasurementsRecurring



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value156171159156150124139131126116
Percentage of OtherLiabilitiesFairValueDisclosure100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FairValueByAssetClass, us-gaap:FairValueByMeasurementBasis, us-gaap:FairValueByMeasurementFrequency

gild:DeferredCompensationPlan, us-gaap:EstimateOfFairValueFairValueDisclosure, us-gaap:FairValueMeasurementsRecurring



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value156171159156150124139131126116
Percentage of OtherLiabilitiesFairValueDisclosure100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PreferredStockSharesAuthorized



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312008-12-31
Value5555555555555555555555555555555555550555555
Percentage of PreferredStockSharesAuthorized100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ShareRepurchaseProgram

us-gaap:StockRepurchaseProgramAuthorizedAmount1

gild:A2020StockRepurchaseProgram



Period End2020-01-29
Value5000
Percentage of StockRepurchaseProgramAuthorizedAmount1100.0

us-gaap:ShareRepurchaseProgram, us-gaap:SubsequentEventType

gild:A2020StockRepurchaseProgram, us-gaap:SubsequentEvent



Period End2020-01-29
Value5000
Percentage of StockRepurchaseProgramAuthorizedAmount1100.0

us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312008-12-312007-12-312006-12-31
Value22179226502073622751220912153423007217342065120501252542309120917193631736016115140191911317944166341758815819138631642913702117441119211343103929550875080837364686762336211617561215878670075026505446537522051
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StatementEquityComponents

us-gaap:AccumulatedOtherComprehensiveIncome



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302014-12-312013-12-312009-12-312008-12-312007-12-312006-12-31
Value468511710213080362-170165249120260278-108-46-16488167247301-124-541-42
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest0.20.40.60.40.60.40.20.0-0.80.81.00.51.21.4-0.6-0.3-1.20.50.91.51.9-1.1-0.10.9-0.10.1

us-gaap:AdditionalPaidInCapital



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302014-12-312013-12-312009-12-312008-12-312007-12-312006-12-31
Value33113051287026842494228221181844156412649067336164543216325164442850239153864376393034162906
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest14.913.513.811.811.310.69.28.57.66.23.63.22.92.31.83.93.72.31.60.015.145.967.388.091.1141.7

us-gaap:CommonStock



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302014-12-312013-12-312009-12-312008-12-312007-12-312006-12-31
Value11111111111111111112220000
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:NoncontrollingInterest



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302014-12-312013-12-312009-12-312008-12-312007-12-312006-12-31
Value11212513213514014714662605940941447647649257962157953034739337513819314053
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest0.50.60.60.60.60.70.60.30.30.31.61.82.32.52.83.64.43.03.02.12.53.22.14.33.72.6

us-gaap:RetainedEarnings



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302014-12-312013-12-312009-12-312008-12-312007-12-312006-12-31
Value18709193881761619829193261902420706198251919619012236892182319564181541665414949130451800116961160381273261061995300198-911
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest84.485.685.087.287.588.390.091.293.092.793.894.593.593.895.992.893.194.294.596.480.552.030.76.75.3-44.4

Line plots across dimensions of each concept

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ProductOrService


us-gaap:Revenues us-gaap:StatementGeographical


us-gaap:Revenues us-gaap:ProductOrService


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


us-gaap:StockholdersEquity us-gaap:StatementEquityComponents


us-gaap:FiniteLivedIntangibleAssetsNet us-gaap:FiniteLivedIntangibleAssetsByMajorClass


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


us-gaap:StockholdersEquity us-gaap:StatementEquityComponents