COP


Line plots across dimensions of each concept
Tables

Table of contents



us-gaap:CommonStockValue

us-gaap:CommonStockSharesIssued

us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding

us-gaap:WeightedAverageNumberOfSharesOutstandingBasic

us-gaap:EarningsPerShareBasic

us-gaap:EarningsPerShareDiluted

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax
us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments
us-gaap:Energy
us-gaap:MajorCustomers
us-gaap:ProductOrService
us-gaap:ProductOrService, us-gaap:StatementBusinessSegments
us-gaap:ReserveQuantitiesByTypeOfReserve
us-gaap:StatementBusinessSegments
us-gaap:StatementGeographical

us-gaap:Revenues
us-gaap:ConsolidatedEntities
us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems
us-gaap:ConsolidationItems

us-gaap:CostOfGoodsAndServicesSold
us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems
us-gaap:ConsolidationItems

us-gaap:OperatingCostsAndExpenses
us-gaap:ConsolidatedEntities
us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems
us-gaap:ConsolidationItems

us-gaap:SellingGeneralAndAdministrativeExpense
us-gaap:ConsolidatedEntities
us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems
us-gaap:ConsolidationItems

us-gaap:InterestAndDebtExpense
us-gaap:ConsolidatedEntities
us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems
us-gaap:ConsolidationItems

us-gaap:OtherNonoperatingIncomeExpense
us-gaap:ConsolidatedEntities
us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems

us-gaap:OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest
us-gaap:ConsolidatedEntities
us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems
us-gaap:ConsolidationItems

us-gaap:IncomeTaxExpenseBenefit
us-gaap:ConsolidatedEntities
us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems

us-gaap:IncomeTaxesPaidNet

us-gaap:ProfitLoss
us-gaap:ConsolidatedEntities
us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems
us-gaap:ConsolidationItems
us-gaap:StatementEquityComponents

us-gaap:ComprehensiveIncomeNetOfTax
us-gaap:ConsolidatedEntities
us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems
us-gaap:ConsolidationItems

us-gaap:ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest

us-gaap:ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest

us-gaap:NetIncomeLoss
us-gaap:ConsolidatedEntities
us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems
us-gaap:ConsolidationItems
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:NetIncomeLossAttributableToNoncontrollingInterest
us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems

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

us-gaap:Liabilities
us-gaap:ConsolidatedEntities
us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems
us-gaap:ConsolidationItems

us-gaap:LiabilitiesAndStockholdersEquity
us-gaap:ConsolidatedEntities
us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems
us-gaap:ConsolidationItems

us-gaap:StockholdersEquity

us-gaap:AssetsCurrent
us-gaap:ConsolidatedEntities
us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems
us-gaap:ConsolidationItems

us-gaap:CashAndCashEquivalentsAtCarryingValue
us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems
us-gaap:DerivativeInstrumentRisk, us-gaap:FairValueByMeasurementBasis, us-gaap:FinancialInstrument
us-gaap:FairValueByMeasurementBasis

us-gaap:ReceivablesNetCurrent
us-gaap:ConsolidatedEntities
us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems
us-gaap:ConsolidationItems

us-gaap:InventoryNet
us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems

us-gaap:InventoryRawMaterialsAndSupplies

us-gaap:PrepaidExpenseAndOtherAssetsCurrent
us-gaap:ConsolidatedEntities
us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems
us-gaap:ConsolidationItems

us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment

us-gaap:PropertyPlantAndEquipmentNet
us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems
us-gaap:ConsolidationItems

us-gaap:OtherAssetsNoncurrent
us-gaap:ConsolidatedEntities
us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems
us-gaap:ConsolidationItems

us-gaap:LiabilitiesCurrent
us-gaap:ConsolidatedEntities
us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems
us-gaap:ConsolidationItems

us-gaap:DebtCurrent
us-gaap:ConsolidatedEntities
us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems
us-gaap:ConsolidationItems

us-gaap:AccountsPayableCurrent

us-gaap:TaxesPayableCurrent
us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems

us-gaap:OtherLiabilitiesCurrent
us-gaap:ConsolidatedEntities
us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems
us-gaap:ConsolidationItems

us-gaap:LongTermDebt
us-gaap:FairValueByMeasurementBasis

us-gaap:PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent
us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems

us-gaap:MinorityInterest
us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems

us-gaap:StockholdersEquity

us-gaap:CommonStockValue

us-gaap:RetainedEarningsAccumulatedDeficit
us-gaap:ConsolidatedEntities
us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems
us-gaap:ConsolidationItems

us-gaap:TreasuryStockValue

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax

us-gaap:NetCashProvidedByUsedInOperatingActivities
us-gaap:ConsolidatedEntities
us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems
us-gaap:ConsolidationItems

us-gaap:NetCashProvidedByUsedInInvestingActivities
us-gaap:ConsolidatedEntities
us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems
us-gaap:ConsolidationItems

us-gaap:NetCashProvidedByUsedInFinancingActivities
us-gaap:ConsolidatedEntities
us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems
us-gaap:ConsolidationItems

us-gaap:NetCashProvidedByUsedInOperatingActivities
us-gaap:ConsolidatedEntities
us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems
us-gaap:ConsolidationItems

us-gaap:NetIncomeLoss
us-gaap:ConsolidatedEntities
us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems
us-gaap:ConsolidationItems
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:ProfitLoss
us-gaap:ConsolidatedEntities
us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems
us-gaap:ConsolidationItems
us-gaap:StatementEquityComponents

us-gaap:DepreciationDepletionAndAmortization
us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems

us-gaap:IncreaseDecreaseInOtherOperatingCapitalNet

us-gaap:IncreaseDecreaseInInventories

us-gaap:NetCashProvidedByUsedInInvestingActivities
us-gaap:ConsolidatedEntities
us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems
us-gaap:ConsolidationItems

us-gaap:NetCashProvidedByUsedInFinancingActivities
us-gaap:ConsolidatedEntities
us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems
us-gaap:ConsolidationItems

us-gaap:PaymentsForRepurchaseOfCommonStock
us-gaap:ConsolidatedEntities

us-gaap:EffectiveIncomeTaxRateContinuingOperations

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents
us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems

us-gaap:ProceedsFromSaleOfShortTermInvestments

us-gaap:ProceedsFromSaleOfLongtermInvestments

cop:ExplorationAbandonmentAndImpairmentCashPayments

cop:IncreaseDecreaseInCapitalAccrual
us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems
us-gaap:ConsolidatedEntities
cop:IntercompanyCashManagement
us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems

cop:OperatingExpensesIncludingNonoperatingIncomeExpenseAndInterestAndDebtExpense
us-gaap:ConsolidatedEntities
us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems
us-gaap:ConsolidationItems

cop:ProceedsFromCommonStockIssuance
us-gaap:ConsolidatedEntities
us-gaap:ConsolidationItems

cop:RelatedPartyTransactionsRelatedPartyRevenue
us-gaap:FinancialInstrument, dei:LegalEntity
cop:SharesExchangeForAssetsHeldForSale
us-gaap:Range, us-gaap:StatementGeographical, us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency, us-gaap:FinancialInstrument, us-gaap:MeasurementInputType
srt:AverageSalesPrices
us-gaap:StatementGeographical, us-gaap:StatementScenario, us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency, us-gaap:FinancialInstrument, us-gaap:MeasurementInputType

us-gaap:AccretionExpenseIncludingAssetRetirementObligations
us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems

us-gaap:AssetImpairmentCharges

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect
us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems

us-gaap:CommonStockDividendsPerShareCashPaid

us-gaap:DeferredIncomeTaxExpenseBenefit
us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanAmortizationOfGainsLosses
us-gaap:RetirementPlanType
us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanAmortizationOfPriorServiceCostCredit
us-gaap:RetirementPlanType
us-gaap:RetirementPlanSponsorLocation
us-gaap:DefinedBenefitPlanContributionsByEmployer
us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanExpectedReturnOnPlanAssets
us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanInterestCost
us-gaap:RetirementPlanType
us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanNetPeriodicBenefitCost
us-gaap:RetirementPlanType
us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanRecognizedNetGainLossDueToSettlements1
us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanServiceCost
us-gaap:RetirementPlanType

us-gaap:DividendsCommonStock
us-gaap:StatementEquityComponents

us-gaap:EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents
us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems
dei:LegalEntity
us-gaap:EquitySecuritiesFvNiUnrealizedGainLoss
us-gaap:FinancialInstrument, dei:LegalEntity

us-gaap:ExplorationExpense
us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems
us-gaap:StatementBusinessSegments

us-gaap:ForeignCurrencyTransactionGainLossBeforeTax
us-gaap:ConsolidatedEntities
us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems
us-gaap:IncomeStatementLocation
us-gaap:GainLossOnForeignCurrencyDerivativesRecordedInEarningsNet
us-gaap:DerivativeInstrumentRisk, us-gaap:IncomeStatementLocation
us-gaap:GainLossOnPriceRiskDerivativeInstrumentsNotDesignatedAsHedgingInstruments

us-gaap:GainLossOnSaleOfPropertyPlantEquipment
us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems

us-gaap:IncomeLossFromEquityMethodInvestments
us-gaap:ConsolidatedEntities
us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems
us-gaap:ConsolidationItems

us-gaap:IncomeLossFromEquityMethodInvestmentsNetOfDividendsOrDistributions

us-gaap:IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance

us-gaap:IncreaseDecreaseInAccountsPayable

us-gaap:IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets

us-gaap:IncreaseDecreaseInReceivables

us-gaap:InterestIncomeRelatedParty

us-gaap:InterestPaidNet

us-gaap:MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders
us-gaap:StatementEquityComponents

us-gaap:OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossBeforeReclassificationAndTax

us-gaap:OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditBeforeTax

us-gaap:OtherComprehensiveIncomeLossAvailableForSaleSecuritiesTax

us-gaap:OtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentTax

us-gaap:OtherComprehensiveIncomeLossNetOfTax
us-gaap:StatementEquityComponents

us-gaap:OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax

us-gaap:OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansNetUnamortizedGainLossArisingDuringPeriodBeforeTax

us-gaap:OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossBeforeTax

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansNetOfTax

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansTax

us-gaap:OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax

us-gaap:OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax

us-gaap:OtherNonoperatingExpense
us-gaap:ConsolidatedEntities
us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems

us-gaap:OtherOperatingActivitiesCashFlowStatement

us-gaap:PaymentsForProceedsFromInvestments
us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems

us-gaap:PaymentsForProceedsFromOtherInvestingActivities
us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems

us-gaap:PaymentsOfDividendsCommonStock
us-gaap:ConsolidatedEntities
us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems
us-gaap:ConsolidationItems

us-gaap:PaymentsToAcquireLongtermInvestments

us-gaap:PaymentsToAcquireProductiveAssets
us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems
us-gaap:ConsolidationItems

us-gaap:PaymentsToAcquireShortTermInvestments

us-gaap:PaymentsToFundLongtermLoansToRelatedParties
us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems
us-gaap:ConsolidationItems

us-gaap:ProceedsFromCollectionOfLongtermLoansToRelatedParties
us-gaap:ConsolidatedEntities
us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems
us-gaap:ConsolidationItems

us-gaap:ProceedsFromIssuanceOfDebt
us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems
us-gaap:ConsolidationItems

us-gaap:ProceedsFromPaymentsForOtherFinancingActivities
us-gaap:ConsolidatedEntities
us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems
us-gaap:ConsolidationItems

us-gaap:ProceedsFromSaleOfProductiveAssets
us-gaap:ConsolidatedEntities
us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems
us-gaap:ConsolidationItems
us-gaap:ConsolidationItems, us-gaap:IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperations, us-gaap:StatementBusinessSegments
us-gaap:ProceedsFromSalesOfBusinessAffiliateAndProductiveAssets
us-gaap:ConsolidationItems, us-gaap:StatementScenario, us-gaap:IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperations, us-gaap:StatementBusinessSegments

us-gaap:RelatedPartyTransactionPurchasesFromRelatedParty

us-gaap:RelatedPartyTransactionSellingGeneralAndAdministrativeExpensesFromTransactionsWithRelatedParty

us-gaap:RepaymentsOfDebt
us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems
us-gaap:ConsolidationItems
us-gaap:ConsolidationItems, us-gaap:IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperations, us-gaap:StatementBusinessSegments
us-gaap:ResultsOfOperationsIncomeBeforeIncomeTaxes

us-gaap:RevenueFromRelatedParties
us-gaap:ConsolidatedEntities
us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems
us-gaap:ConsolidationItems
us-gaap:Range, us-gaap:StatementGeographical, us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency, us-gaap:FinancialInstrument, us-gaap:MeasurementInputType
us-gaap:ServicingAssetsAndServicingLiabilitiesAtFairValueAssumptionsUsedToEstimateFairValueDiscountRate

us-gaap:StockIssuedDuringPeriodValueShareBasedCompensation
us-gaap:StatementEquityComponents

us-gaap:StockholdersEquityOther
us-gaap:StatementEquityComponents

us-gaap:TaxesExcludingIncomeAndExciseTaxes
us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems

us-gaap:TreasuryStockValueAcquiredCostMethod
us-gaap:StatementEquityComponents

cop:AccountsAndFinancingReceivableAfterAllowanceForCreditLossNoncurrentAtCostPlusAccruedInterest
us-gaap:CashAndCashEquivalents, us-gaap:DerivativeInstrumentRisk

cop:AccountsPayableIncludingRelatedPartiesCurrent
us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems
us-gaap:ConsolidationItems

cop:AssetRetirementObligationsAndAccruedEnvironmentalCostNonCurrent
us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems

cop:CashAndCashEquivalentsCarriedAtCostPlusAccruedInterest
us-gaap:CashAndCashEquivalents
us-gaap:CashAndCashEquivalents, us-gaap:DerivativeInstrumentRisk
us-gaap:FinancialInstrument, dei:LegalEntity
cop:InvestmentInEquitySecuritiesFairValue

cop:OtherCommonStockholdersEquity
us-gaap:ConsolidatedEntities
us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems
us-gaap:ConsolidationItems
us-gaap:ConsolidationItems, us-gaap:IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperations, us-gaap:StatementBusinessSegments
cop:PercentSold

cop:ShortTermInvestmentsCarriedAtCostPlustAccruedInterest
us-gaap:CashAndCashEquivalents, us-gaap:DerivativeInstrumentRisk

cop:ShortTermInvestmentsExcludingCenovus
us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems
us-gaap:DerivativeInstrumentRisk, us-gaap:FairValueByMeasurementBasis, us-gaap:FinancialInstrument
us-gaap:FairValueByMeasurementBasis
us-gaap:Range, us-gaap:StatementGeographical, us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency, us-gaap:FinancialInstrument, us-gaap:ValuationTechnique
srt:ProvedDevelopedReservesVolume

us-gaap:AccountsAndNotesReceivableNet
us-gaap:AccountsNotesLoansAndFinancingReceivableByReceivableType
us-gaap:AccountsReceivableNet
us-gaap:GuaranteeObligationsByNature
us-gaap:AccrualForEnvironmentalLossContingencies
us-gaap:StatementGeographical, us-gaap:EnvironmentalRemediationContingency, dei:LegalEntity

us-gaap:AccumulatedOtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax

us-gaap:AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax

us-gaap:AccumulatedOtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentNetOfTax

us-gaap:AdditionalPaidInCapitalCommonStock

us-gaap:AllowanceForDoubtfulAccountsReceivableCurrent
us-gaap:ConsolidationItems, us-gaap:BalanceSheetLocation, us-gaap:IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperations, us-gaap:RegulatoryLiability, us-gaap:StatementBusinessSegments
us-gaap:AssetRetirementObligationsNoncurrent
us-gaap:ConsolidationItems, us-gaap:IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperations, us-gaap:RegulatoryLiability, us-gaap:StatementBusinessSegments
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency
us-gaap:AssetsFairValueDisclosure
us-gaap:FairValueByMeasurementFrequency
us-gaap:StatementGeographical, us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency, us-gaap:FinancialInstrument
us-gaap:ConsolidationItems, us-gaap:IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperations, us-gaap:StatementBusinessSegments
us-gaap:AssetsOfDisposalGroupIncludingDiscontinuedOperation

us-gaap:AvailableForSaleDebtSecuritiesAmortizedCostBasis
us-gaap:FinancialInstrument

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

us-gaap:CapitalizedExploratoryWellCosts

us-gaap:ContractWithCustomerLiability

us-gaap:DebtAndCapitalLeaseObligations

us-gaap:DeferredCreditsAndOtherLiabilities
us-gaap:ConsolidatedEntities
us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems
us-gaap:ConsolidationItems

us-gaap:DeferredIncomeTaxLiabilitiesNet
us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems
us-gaap:ConsolidationItems
us-gaap:RetirementPlanSponsorLocation
us-gaap:DefinedBenefitPlanExpectedFutureEmployerContributionsRemainderOfFiscalYear

us-gaap:DerivativeAssetCollateralObligationToReturnCashOffset

us-gaap:DerivativeAssetFairValueGrossAssetIncludingNotSubjectToMasterNettingArrangement
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency
us-gaap:FairValueByMeasurementFrequency

us-gaap:DerivativeAssetFairValueGrossLiability

us-gaap:DerivativeAssetFairValueOffsetAgainstCollateralNetOfNotSubjectToMasterNettingArrangementPolicyElection

us-gaap:DerivativeAssetNotSubjectToMasterNettingArrangement
us-gaap:DerivativeInstrumentRisk
us-gaap:DerivativeAssets
us-gaap:DerivativeInstrumentRisk, us-gaap:FairValueByMeasurementBasis

us-gaap:DerivativeFairValueOfDerivativeAsset

us-gaap:DerivativeFairValueOfDerivativeAssetAmountNotOffsetAgainstCollateral

us-gaap:DerivativeFairValueOfDerivativeLiability

us-gaap:DerivativeFairValueOfDerivativeLiabilityAmountNotOffsetAgainstCollateral
us-gaap:DerivativeInstrumentRisk
us-gaap:DerivativeFairValueOfDerivativeLiabilityAmountOffsetAgainstCollateral
us-gaap:DerivativeInstrumentRisk, us-gaap:FairValueByMeasurementBasis

us-gaap:DerivativeLiabilityCollateralRightToReclaimCashOffset

us-gaap:DerivativeLiabilityFairValueGrossAsset

us-gaap:DerivativeLiabilityFairValueGrossLiabilityIncludingNotSubjectToMasterNettingArrangement
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency
us-gaap:FairValueByMeasurementFrequency

us-gaap:DerivativeLiabilityFairValueOffsetAgainstCollateralNetOfNotSubjectToMasterNettingArrangementPolicyElection

us-gaap:DerivativeLiabilityNotSubjectToMasterNettingArrangement
cop:CreditRisk
us-gaap:DerivativeNetLiabilityPositionAggregateFairValue
us-gaap:ReserveQuantitiesByTypeOfReserve, us-gaap:DerivativeInstrumentRisk, us-gaap:Position
us-gaap:DerivativeNonmonetaryNotionalAmount
us-gaap:DerivativeInstrumentRisk
us-gaap:DerivativeNotionalAmount
us-gaap:DerivativeInstrumentRisk, us-gaap:HedgingDesignation
us-gaap:ConsolidationItems, us-gaap:BalanceSheetLocation, us-gaap:IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperations, us-gaap:StatementBusinessSegments
us-gaap:DisposalGroupIncludingDiscontinuedOperationPropertyPlantAndEquipment
us-gaap:ConsolidationItems, us-gaap:IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperations, us-gaap:StatementBusinessSegments

us-gaap:DueFromRelatedParties
us-gaap:FairValueByMeasurementBasis
us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName

us-gaap:DueFromRelatedPartiesCurrent

us-gaap:DueFromRelatedPartiesNoncurrent

us-gaap:DueToRelatedPartiesCurrent

us-gaap:EmployeeRelatedLiabilitiesCurrent
us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems

us-gaap:EquitySecuritiesFvNi
us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems
us-gaap:FairValueByMeasurementBasis
us-gaap:BalanceSheetLocation
us-gaap:ForeignCurrencyDerivativeInstrumentsNotDesignatedAsHedgingInstrumentsAssetAtFairValue
us-gaap:BalanceSheetLocation
us-gaap:ForeignCurrencyDerivativeInstrumentsNotDesignatedAsHedgingInstrumentsLiabilityAtFairValue
us-gaap:GuaranteeObligationsByNature
us-gaap:GuaranteeObligationsCurrentCarryingValue
us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName, us-gaap:GuaranteeObligationsByNature
us-gaap:GuaranteeObligationsByNature
us-gaap:GuaranteeObligationsMaximumExposure
us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName, us-gaap:GuaranteeObligationsByNature

us-gaap:InventoryCrudeOilProductsAndMerchandise

us-gaap:InvestmentsFairValueDisclosure
us-gaap:FinancialInstrument
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency
us-gaap:InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVenturesFairValueDisclosure
us-gaap:FairValueByMeasurementFrequency

us-gaap:LIFOInventoryAmount

us-gaap:LettersOfCreditOutstandingAmount
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency
us-gaap:LiabilitiesFairValueDisclosure
us-gaap:FairValueByMeasurementFrequency
us-gaap:Range, us-gaap:CreditFacility
us-gaap:LineOfCreditFacilityCapacityAvailableForSpecificPurposeOtherThanForTradePurchases
us-gaap:CreditFacility
us-gaap:LineOfCreditFacilityMaximumBorrowingCapacity

us-gaap:LongTermAccountsNotesAndLoansReceivableNetNoncurrent
us-gaap:DerivativeInstrumentRisk, us-gaap:FairValueByMeasurementBasis, us-gaap:FinancialInstrument
us-gaap:FairValueByMeasurementBasis

us-gaap:LongTermDebtAndCapitalLeaseObligations
us-gaap:ConsolidatedEntities
us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems
us-gaap:ConsolidationItems

us-gaap:LongTermInvestmentsAndReceivablesNet
us-gaap:ConsolidatedEntities
us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems
us-gaap:ConsolidationItems
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency
us-gaap:MarketableSecuritiesCurrent
us-gaap:FairValueByMeasurementFrequency
us-gaap:BalanceSheetLocation, us-gaap:DerivativeInstrumentRisk
us-gaap:PriceRiskDerivativeInstrumentsNotDesignatedAsHedgingInstrumentsAssetAtFairValue
us-gaap:BalanceSheetLocation, us-gaap:DerivativeInstrumentRisk
us-gaap:PriceRiskDerivativeInstrumentsNotDesignatedAsHedgingInstrumentsLiabilityAtFairValue
us-gaap:BalanceSheetLocation
us-gaap:RestrictedCash

us-gaap:RestructuringReserve
us-gaap:RestructuringCostAndReserve, us-gaap:RestructuringPlan
us-gaap:FinancialInstrument, dei:LegalEntity
us-gaap:SharePrice

us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
us-gaap:StatementEquityComponents

us-gaap:TreasuryStockShares

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 █████████████████████████████████▁▁▁▁▁▁▁▁▁181818181818181818181818181818181818181818181818181818181818181818171717171717171717NANANA
us-gaap:CommonStockSharesIssued █████▇▇▇▇▇▇▆▆▆▆▆▆▆▆▆▆▅▅▅▅▅▅▄▄▄▄▃▃▃▂▂▂▂▁▁▁▁179817951795179417941791179017881787178517851784178417821781178017801778177617751775177317731771176917681767176517641762175717541753174917461745174417401737173617351733NANANA
us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding 1NA111NA111NA121512361NA111NA111NA111NA111NA112581293NA136914121445NA149315011503NA149814951495
us-gaap:WeightedAverageNumberOfSharesOutstandingBasic 1NA111NA111NA121212361NA111NA111NA111NA111NA112481283NA135713991432NA148114891492NA148814861485
us-gaap:EarningsPerShareBasic ▂▅█▆▇▇▇▆▅▆▅▁▅▄▃▃▃▁▃▄▅▄▇▇▇▇▇▇▇▆▆▇▇█▇█▇▆▇█▆▆▆▅▅-1.60.67999999999999972.761.41.611.621.61.40.751.280.35-2.780.47-0.03000000000000025-0.84-0.86-1.18-2.7800000000000002-0.87-0.150.22-0.0400000000000000362.181.681.722.01999999999999962.011.661.741.171.471.822.292.55999999999999871.932.432.111.422.062.791.411.15999999999999970.980.580.54
us-gaap:EarningsPerShareDiluted -1.6NA2.741.41.6NA1.591.390.751.280.34-2.780.47-0.03000000000000025-0.84-0.86-1.18-2.7800000000000002-0.87-0.150.22-0.030000000000000252.171.671.712.02.01.651.731.171.461.82.272.55000000000000071.912.412.091.41000000000000012.052.771.41.16000000000000010.970.570.54
  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 ▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆█▁█▇▇▇▇▇▇61587708775679539150966694498504879881196688678175186587651655755015676675078660800211851129171470116048139851547014142146511527915089151661608314903166951766856530-7438047208456864482142979401733544830741
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ConsolidatedEntities,us-gaap:ConsolidationItems cop:ConocophillipsCompany,srt:ReportableLegalEntities2903NA349334873981NA43303680NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ConsolidatedEntities,us-gaap:ConsolidationItems srt:NonGuarantorSubsidiaries,srt:ReportableLegalEntities▁▄▄▅▇█▇▆32554159426344665169532751194824NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ConsolidationItems,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,cop:AlaskaSegment▃▆▆▇▇██▇▇▅▁▃▂111313541296142614071459149314031385121493210711007NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ConsolidationItems,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,cop:AsiaPacificAndMiddleEast▃▄▄▃█▇█▃▆▅▂▁▃10031067108510301343129113481006121611379598961022NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ConsolidationItems,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,cop:LowerFortyEight3093NA371837984141NA452938513949NA310030883227NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:Energy cop:OtherProducts▂█▁▃▃▃▃▃▃▃▃▂▃90845550101213281204131811691321106510078801018NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:Energy srt:CrudeOil▂█▁3444184810NA4581195700NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:MajorCustomers cop:CustomersWithinTheScopeOfAscTopic6064911NANANA7059NANANA6545NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ProductOrService cop:NaturalGasProductLine▁▂▁▁▅▇▄▃▆▆▆▆█1090129111591095176819591522136318901941181118652194NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ProductOrService cop:PhysicalGasContracts▁▃▂▁▆▇▅▄▇▆▆▆█1296157715291371208123411897171922612038205021562425NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ProductOrService,us-gaap:StatementBusinessSegments cop:PhysicalGasContracts,cop:LowerFortyEightSegment976NANA11111613NANA1300NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ReserveQuantitiesByTypeOfReserve srt:NaturalGasReserves▁▃▂▂▇█▅▄▆▇▅16551998179919153003312725032294279628242496NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:StatementBusinessSegments cop:LowerFortyEight3103NA372838094153NA454338523952NA310230903230NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:StatementGeographical country:US▂▅▅▅▇██▅▅▃▁▁▂4217516350855225568661236025525653364764403841624240NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:Revenues ▁▃▄▃▄▄▄▃▃▃▂▃▃▂▂▁▁▂▂▃▃▅▅▆▇▆▇▆▆▇▇▇▇▆▇█4811814010093838010057103611016592408961873671958882777172546516557550156766750786608002118511291714701160481398515470141421465115279150891516616083149031669517668NANANANANANANANANA
 us-gaap:Revenues us-gaap:ConsolidatedEntities,us-gaap:ConsolidationItems cop:ConocophillipsCompany,srt:ReportableLegalEntities1416NA708656526132NA65445841NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:Revenues us-gaap:ConsolidatedEntities,us-gaap:ConsolidationItems srt:NonGuarantorSubsidiaries,srt:ReportableLegalEntities▁▃▂▅▆█▇▅44515592508866206731791374186557NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:Revenues us-gaap:ConsolidationItems srt:ConsolidationEliminations█▅▃▂▃▁▃▃▄▂▆1048-3077-5668-6073-5183-7929-5735-5429-4053-6461-1661NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:CostOfGoodsAndServicesSold ▁▂▁▁▆█▆▃▇▅▂26612783271026743675398635303064371434352926NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:CostOfGoodsAndServicesSold us-gaap:ConsolidatedEntities,us-gaap:ConsolidationItems cop:ConocophillipsCompany,srt:ReportableLegalEntities2612NA307831243497NA38803281NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:CostOfGoodsAndServicesSold us-gaap:ConsolidatedEntities,us-gaap:ConsolidationItems srt:NonGuarantorSubsidiaries,srt:ReportableLegalEntities▂▁▁▂▇█▅▄9469048849461304137311971128NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:OperatingCostsAndExpenses ▁▂▂▂▁▂▂▂▁▂▁▂▂▂▂▂▂▃▄▃▃█▄▄▄1173130213311418127113621367131311711324122413271298134215261445135415821834179818022943204120301895NANANANANANANANANANANANANANANANANANANANA
 us-gaap:OperatingCostsAndExpenses us-gaap:ConsolidatedEntities,us-gaap:ConsolidationItems cop:BurlingtonResourcesLLC,srt:ReportableLegalEntities█▁▁▁█▁▁▁1000000.00.00.00.01000000.00.00.00.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:OperatingCostsAndExpenses us-gaap:ConsolidatedEntities,us-gaap:ConsolidationItems cop:ConocophillipsCompany,srt:ReportableLegalEntities160NA290657180NA298253NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:OperatingCostsAndExpenses us-gaap:ConsolidatedEntities,us-gaap:ConsolidationItems srt:NonGuarantorSubsidiaries,srt:ReportableLegalEntities▁▄▆█▆▄▆▅10131050109111131091106310841065NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:SellingGeneralAndAdministrativeExpense ▁▃▂▂▃▂▂▂▂▂▂▂▃▃▃▃▃▄▄▃▃▂▃▃▃▄▄▃▃▃▄▃█▇▆▆▆▇▆▅▆▆▅▆▆-3187871291536511911899138132134157167203167186283293218159132203218182247249193165214330235685599466514499630493438444452427476475
 us-gaap:SellingGeneralAndAdministrativeExpense us-gaap:ConsolidatedEntities srt:ParentCompany▃▃▁▃█▁▃▁█▁▃22124121412NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:SellingGeneralAndAdministrativeExpense us-gaap:ConsolidatedEntities,us-gaap:ConsolidationItems srt:NonGuarantorSubsidiaries,srt:ReportableLegalEntities▂▆▃█▃▄▁▆2336264425291836NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:InterestAndDebtExpense ▃▃▃▂▄▃▃▂▃▄▄▆▆▆▇▆▅▅▄▃▃▂▂▂▂▃▂▁▁▂▂▃▃▄▄▄▅▅▅▇▆█▇▅▆202196184165233188186177184226251306315317335312281268240210202173149155171192151139130161161197209228235247262273264349301375336268310
 us-gaap:InterestAndDebtExpense us-gaap:ConsolidatedEntities srt:ParentCompany▁▂▂▁▁▄▂▄▂▆█7072727069767276718086NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:InterestAndDebtExpense us-gaap:ConsolidatedEntities,us-gaap:ConsolidationItems cop:BurlingtonResourcesLLC,srt:ReportableLegalEntities█████▁▁▂3333343333111014NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:InterestAndDebtExpense us-gaap:ConsolidatedEntities,us-gaap:ConsolidationItems cop:ConocophillipsCompany,srt:ReportableLegalEntities107NA109143149NA156141NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:InterestAndDebtExpense us-gaap:ConsolidatedEntities,us-gaap:ConsolidationItems srt:NonGuarantorSubsidiaries,srt:ReportableLegalEntities▆▃▆▁█▆▇▇29034-1550354143NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:OtherNonoperatingIncomeExpense ▁▇▇▆█▄▇▇▆▇▆▆▆-1539222262172702-500309416-52386654731NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:OtherNonoperatingIncomeExpense us-gaap:ConsolidatedEntities,us-gaap:ConsolidationItems cop:BurlingtonResourcesLLC,srt:ReportableLegalEntities▄██▄▁▁▁▁12210000NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:OtherNonoperatingIncomeExpense us-gaap:ConsolidatedEntities,us-gaap:ConsolidationItems srt:NonGuarantorSubsidiaries,srt:ReportableLegalEntities▃▁▃▃▄▃█▁1073312412719311437022NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax ▅▆▆▆▆▅▆▅▆▆▇▆▆▅▆▆█▅▂▇▁▃▃▇▆▄▇▃▅▆▇▅▇▇▁▇-79720424570176-42059-35978-13450927184-719-82-2241183-712-2519787-2719-1986-1932677-226-989621-1674-644-188612-500834619-2970540NANANANANANANANANA
us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest ▄▆█▇▇▇█▇▇▆▆▂▅▅▄▄▃▁▄▅▅-1563128634932058268726722906261917761325653-4361-232-8-1654-1644-2224-5051-1741-91-356NA255334603698NA440536963787NA359139454265NANANANANANANANANANANANA
 us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest us-gaap:ConsolidatedEntities,us-gaap:ConsolidationItems srt:NonGuarantorSubsidiaries,srt:ReportableLegalEntities▁▄▃▆▆█▇▆3181581129228642474365232072771NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest us-gaap:ConsolidationItems srt:ConsolidationEliminations█▅▃▃▃▁▃▃▄▂▆1988-1764-4301-4258-3983-6570-4031-3982-2787-5487-757NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:IncomeTaxExpenseBenefit ▄▄▄▄▅▅▅▅▅▃▄▂▂▄▃▃▂▁▂▄▃▃▅▆▆▅▇▆▆▆▇▇█▇███▇▇▇▇▆▆▅▅1485434224618417941033965876-273217-935-83111-628-586-768-1614-68573-642-2979041395158110501966163017631437194523342520242325492773275422392205201118781431142610631176
 us-gaap:IncomeTaxExpenseBenefit us-gaap:ConsolidatedEntities,us-gaap:ConsolidationItems cop:ConocophillipsCompany,srt:ReportableLegalEntities22NA-92-26036NA-3219NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:IncomeTaxExpenseBenefit us-gaap:ConsolidatedEntities,us-gaap:ConsolidationItems srt:NonGuarantorSubsidiaries,srt:ReportableLegalEntities▁▅▄▅▆▆█▇1477235347418258411082973NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:IncomeTaxesPaidNet ▃▃▃▄▃▄▃▄▃▃▂▂▂▂▂▁▂▂▂▃▁▄▄▅▃▄▄▅▄▆▅█▅▇▆▇▇▇▆▆▅▅▅465695638872700104962013075215942371871502127-499133147204425-2538441038165466786011891662119921741698323414622858225127302722245220972329159618341536NANA
us-gaap:ProfitLoss ▃▅▇▆▆▆▆▆▅▆▅▁▅▄▃▃▃▁▃▄▄▄▇▆▆▆▆▆▆▅▆▆▇▇▇▇▇▆▇█▆▆▆▅▅-17117433071159718461878187316549001598436-3426599-19-1026-1058-1456-3437-1056-164286-24272720982137250324962063215314411813228929553410263134193042205330694183211217581487875816
 us-gaap:ProfitLoss us-gaap:ConsolidatedEntities,us-gaap:ConsolidationItems srt:NonGuarantorSubsidiaries,srt:ReportableLegalEntities▁▃▃▆▅█▆▅17185875821231649281121251798NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:ProfitLoss us-gaap:ConsolidationItems srt:ConsolidationEliminations█▅▃▃▃▁▃▃▄▂▆1988-1764-4301-4258-3983-6570-4031-3982-2787-5487-757NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
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us-gaap:DepreciationDepletionAndAmortization ▁▂▂▂▂▂▂▁▁▃▂▂▅▅█▇▇█▇▇▆▇▆▆▄▄▄▄▄▃▃▂▄▅▄▆▆▇▇▇▇█▇▇▇141114881566149015461612149414381412163316081625197920612425232922472382227123292131227120962070189218931902183218071632169916261838191918702075207022162246228023182391232723472230
 us-gaap:DepreciationDepletionAndAmortization us-gaap:ConsolidatedEntities,us-gaap:ConsolidationItems cop:ConocophillipsCompany,srt:ReportableLegalEntities147NA159148136NA152143NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:DepreciationDepletionAndAmortization us-gaap:ConsolidatedEntities,us-gaap:ConsolidationItems srt:NonGuarantorSubsidiaries,srt:ReportableLegalEntities▁▄▆▄▆█▄▂12641335140713421410145513421295NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:IncreaseDecreaseInOtherOperatingCapitalNet ▇▄▆▇▅▅▃▄▅▂▄▅▄▄▄▂▂▄▅▅▁▁▄▂█445-4222434514925-359-12134-385-1624-79-90-46-374-416-83138-15-630-623-66-472595NANANANANANANANANANANANANANANANANANANANA
us-gaap:IncreaseDecreaseInInventories ▃▃▃▃▃▃▄▃▃▃▃▃▃▃▃▃▃▃▃▃▃▃▃▃▃▃▄▃▄▃▃▂▅▁▄▂▆▁▄█▁▃▃▆▂-27765-75734-25114433-124012-7376-22-4584-61-7-11735-7731597627-231222177-20728-14331402-2535298-9882669-25354974840-2439-706532427-1454
  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 ▂▁▄▃▃▃▃▂▄▃▅█▃▄▄▂▂▃▂▂▂▂▁▁▁▅▂▂▂▂▂▂▂▄▂▂▂▃▆▆▂▂▂▂▂-1932-3830150-1461-1477-178-1638-1949-78-46920087197-97453275-2122-2065-626-2249-2664-3116-3357-3811-4265-36982315-2718-3415-2433-2929-2773-2915-30101124-3245-2683-2211-111941013840-2157-2506-1921-2582-2926
 us-gaap:NetCashProvidedByUsedInInvestingActivities us-gaap:ConsolidatedEntities srt:ParentCompany███▅█▃█▁▇▇122512101142-811163-7281235-16088871013NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:NetCashProvidedByUsedInInvestingActivities us-gaap:ConsolidatedEntities,us-gaap:ConsolidationItems cop:BurlingtonResourcesLLC,srt:ReportableLegalEntities▁▇▄▁▁▁█-2513527792416-211648NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:NetCashProvidedByUsedInInvestingActivities us-gaap:ConsolidationItems srt:ConsolidationEliminations█▄████▇▇▇▁-47-6631545169-70-65-874-1232-1278-12287NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
  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 ▄▄▄▃▄▄▄▂▂▃▂▁▄▃▄▄█▄▄▆▄▅▄▄▄▂▄▃▄▆▄▃▂▁▁▁▂▂▁▁▄▃▄▅▆-1230-1270-1132-1654-1173-1317-1263-3003-3776-2586-3827-4599-1344-1906-347-11204137-975-9901555-1019542-973-789-1354-3873-1085-1845-3301402-532-2081-3270-4687-4322-4235-3061-3492-4687-4066-574-2687-1268891011
 us-gaap:NetCashProvidedByUsedInFinancingActivities us-gaap:ConsolidatedEntities,us-gaap:ConsolidationItems cop:BurlingtonResourcesLLC,srt:ReportableLegalEntities█▁▇████0-4615-7630000NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:NetCashProvidedByUsedInFinancingActivities us-gaap:ConsolidatedEntities,us-gaap:ConsolidationItems cop:ConocophillipsCompany,srt:ReportableLegalEntities0NA0-1661-20NA0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:NetCashProvidedByUsedInFinancingActivities us-gaap:ConsolidatedEntities,us-gaap:ConsolidationItems srt:NonGuarantorSubsidiaries,srt:ReportableLegalEntities▇▁█▃▇▁▆-96-4702494-3552-481-5049-1181NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:NetCashProvidedByUsedInFinancingActivities us-gaap:ConsolidationItems srt:ConsolidationEliminations▂█▂▄▂▇▁▄▃█61160219451114299668-16115413244112572NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:PaymentsForRepurchaseOfCommonStock ▅▅▅█▅▆▆▄▃▆▆▆▁▁7267497491250752926927646500955970963112126NANA0NANANANANANANANANANANANA01493050189931393199314916362608868NANANANANANA
 us-gaap:PaymentsForRepurchaseOfCommonStock us-gaap:ConsolidatedEntities srt:ParentCompany▃▃▃█▃▅▅▂▁▅7267497491250752926927646500955NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
  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
Value18181818181818181818181818181818181818181818181818181818181818181817171717171717171717
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

Shares Issued

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
Value1798179517951794179417911790178817871785178517841784178217811780178017781776177517751773177317711769176817671765176417621757175417531749174617451744174017371736173517331729
Percentage of CommonStockSharesIssued100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Common Stock Shares Authorized

Weighted Average Number Of Diluted Shares Outstanding

us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-312009-09-302009-06-302009-03-31
Value1111111121512361111111111111112581293136914121445149315011503149814951495
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
Value1111111121212361111111111111112481283135713991432148114891492148814861485
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
Value-1.60.67999999999999972.761.41.611.621.61.40.751.280.35-2.780.47-0.03000000000000025-0.84-0.86-1.18-2.7800000000000002-0.87-0.150.22-0.0400000000000000362.181.681.722.01999999999999962.011.661.741.171.471.822.292.55999999999999871.932.432.111.422.062.791.411.15999999999999970.980.580.54
Percentage of EarningsPerShareBasic100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Earnings Per Share Diluted

us-gaap:EarningsPerShareDiluted



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-09-302009-06-302009-03-31
Value-1.62.741.41.61.591.390.751.280.34-2.780.47-0.03000000000000025-0.84-0.86-1.18-2.7800000000000002-0.87-0.150.22-0.030000000000000252.171.671.712.02.01.651.731.171.461.82.272.55000000000000071.912.412.091.41000000000000012.052.771.41.16000000000000010.970.570.54
Percentage of EarningsPerShareDiluted100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Income Loss From Continuing Operations Per Basic Share

Income Loss From Continuing Operations Per Diluted Share

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
Value61587708775679539150966694498504879881196688678175186587651655755015676675078660800211851129171470116048139851547014142146511527915089151661608314903166951766856530-7438047208456864482142979401733544830741
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:ConsolidatedEntities, us-gaap:ConsolidationItems

cop:ConocophillipsCompany, srt:ReportableLegalEntities



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-30
Value290334933487398143303680
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax47.145.043.843.545.843.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax47.145.043.843.545.843.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax cop:ConocophillipsCompany srt:ReportableLegalEntities100.0100.0100.0100.0100.0100.0

srt:NonGuarantorSubsidiaries, srt:ReportableLegalEntities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value32554159426344665169532751194824
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax52.954.055.056.256.555.154.256.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax52.954.055.056.256.555.154.256.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:NonGuarantorSubsidiaries srt:ReportableLegalEntities100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:CorporateNonSegment, us-gaap:CorporateAndOther



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-31
Value1372414078804431635
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.20.90.11.50.80.90.00.60.20.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.20.90.11.50.80.90.00.60.20.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:CorporateNonSegment us-gaap:CorporateAndOther100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IntersegmentElimination, cop:LowerFortyEight



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-06-302017-03-31
Value-10-10-11-12-14-1-3-2-3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.2-0.1-0.1-0.1-0.1-0.0-0.0-0.0-0.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.2-0.1-0.1-0.1-0.1-0.0-0.0-0.0-0.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:IntersegmentElimination cop:LowerFortyEight100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IntersegmentElimination, country:CA



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-06-302017-03-31
Value-180-273-335-250-308-290-255-89-86
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-2.9-3.5-4.2-2.7-3.3-3.4-2.9-1.3-1.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-2.9-3.5-4.2-2.7-3.3-3.4-2.9-1.3-1.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:IntersegmentElimination country:CA100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OperatingSegments, cop:AlaskaSegment



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value111313541296142614071459149314031385121493210711007
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax18.117.616.717.915.415.115.816.515.715.013.915.813.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax18.117.616.717.915.415.115.816.515.715.013.915.813.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments cop:AlaskaSegment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OperatingSegments, cop:AsiaPacificAndMiddleEast



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value10031067108510301343129113481006121611379598961022
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax16.313.814.013.014.713.414.311.813.814.014.313.213.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax16.313.814.013.014.713.414.311.813.814.014.313.213.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments cop:AsiaPacificAndMiddleEast100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OperatingSegments, cop:LowerFortyEight



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-31
Value3093371837984141452938513949310030883227
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax50.247.947.845.347.945.344.946.445.542.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax50.247.947.845.347.945.344.946.445.542.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments cop:LowerFortyEight100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OperatingSegments, country:CA



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-31
Value333360382573427520636544699784
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax5.44.64.86.34.56.17.28.110.310.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax5.44.64.86.34.56.17.28.110.310.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments country:CA100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OperatingSegments, srt:Europe



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-30
Value6001225131315461574164416081110
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax9.715.816.516.916.719.318.316.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax9.715.816.516.916.719.318.316.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments srt:Europe100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:Energy

cop:OtherProducts



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value90845550101213281204131811691321106510078801018
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax14.759.10.012.714.512.513.913.715.013.115.113.013.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax14.759.10.012.714.512.513.913.715.013.115.113.013.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax cop:OtherProducts100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

srt:CrudeOil



Period End2020-03-312019-12-312019-09-302019-03-312018-12-312018-09-30
Value34441848104581195700
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax55.9239.80.050.1202.50.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax55.9239.80.050.1202.50.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:CrudeOil100.0100.0100.0100.0100.0100.0

us-gaap:MajorCustomers

cop:CustomersWithinTheScopeOfAscTopic606



Period End2020-03-312019-03-312018-03-31
Value491170596545
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax79.777.174.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax79.777.174.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax cop:CustomersWithinTheScopeOfAscTopic606100.0100.0100.0

us-gaap:ProductOrService

cop:CrudeOilProductLine



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value9218526616518826926729028658171218141
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.52.43.42.12.12.82.83.43.30.72.63.21.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.52.43.42.12.12.82.83.43.30.72.63.21.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax cop:CrudeOilProductLine100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

cop:FinancialDerivativeContracts



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value-49-43-13-511061642-8-162-9-65
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.8-0.6-0.2-0.60.10.60.10.5-0.1-0.20.0-0.1-0.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.8-0.6-0.2-0.60.10.60.10.5-0.1-0.20.0-0.1-0.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax cop:FinancialDerivativeContracts100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

cop:NaturalGasProductLine



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value1090129111591095176819591522136318901941181118652194
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax17.716.714.913.819.320.316.116.021.523.927.127.529.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax17.716.714.913.819.320.316.116.021.523.927.127.529.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax cop:NaturalGasProductLine100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

cop:OtherProducts



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value114101104111125113108668539687390
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.91.31.31.41.41.21.10.81.00.51.01.11.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.91.31.31.41.41.21.10.81.00.51.01.11.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax cop:OtherProducts100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

cop:PhysicalGasContracts



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value1296157715291371208123411897171922612038205021562425
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax21.020.519.717.222.724.220.120.225.725.130.731.832.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax21.020.519.717.222.724.220.120.225.725.130.731.832.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax cop:PhysicalGasContracts100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProductOrService, us-gaap:StatementBusinessSegments

cop:PhysicalGasContracts, cop:CanadaSegment



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value179264861002412558796191
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax2.93.41.11.32.62.60.91.12.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax2.93.41.11.32.62.60.91.12.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax cop:PhysicalGasContracts cop:CanadaSegment100.0100.0100.0100.0100.0100.0100.0100.0100.0

cop:PhysicalGasContracts, cop:EuropeAndNorthAfricaSegment



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-03-31
Value141147344160227275276323419
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax2.31.94.42.02.52.82.93.85.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax2.31.94.42.02.52.82.93.85.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax cop:PhysicalGasContracts cop:EuropeAndNorthAfricaSegment100.0100.0100.0100.0100.0100.0100.0100.0100.0

cop:PhysicalGasContracts, cop:LowerFortyEightSegment



Period End2020-03-312019-06-302019-03-312018-06-30
Value976111116131300
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax15.814.017.615.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax15.814.017.615.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax cop:PhysicalGasContracts cop:LowerFortyEightSegment100.0100.0100.0100.0

us-gaap:ReserveQuantitiesByTypeOfReserve

srt:NaturalGasLiquidsReserves



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value151207156213238267351265231357238
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax2.52.72.02.72.62.83.73.12.64.43.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax2.52.72.02.72.62.83.73.12.64.43.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:NaturalGasLiquidsReserves100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

srt:NaturalGasReserves



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value16551998179919153003312725032294279628242496
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax26.925.923.224.132.832.426.527.031.834.837.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax26.925.923.224.132.832.426.527.031.834.837.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:NaturalGasReserves100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StatementBusinessSegments

cop:LowerFortyEight



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-31
Value3103372838094153454338523952310230903230
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax50.448.147.945.448.145.344.946.445.643.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax50.448.147.945.448.145.344.946.445.643.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax cop:LowerFortyEight100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

country:CA



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-31
Value513633717823735810891699788870
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax8.38.29.09.07.89.510.110.511.611.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax8.38.29.09.07.89.510.110.511.611.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax country:CA100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StatementGeographical

cop:Libyamember



Period End2020-03-312019-03-312018-03-31
Value44254276
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.72.83.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.72.83.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax cop:Libyamember100.0100.0100.0

country:AU



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value437365412311559540515303440398323344383
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax7.14.75.33.96.15.65.53.65.04.94.85.15.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax7.14.75.33.96.15.65.53.65.04.94.85.15.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax country:AU100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

country:CA



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-30
Value333454360382573441427520636592544699784681542361390469500574593914958102315141171112912501097130311719971082140313651276
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax5.45.94.64.86.34.64.56.17.27.38.110.310.410.38.36.57.86.96.76.67.47.77.47.09.48.47.38.87.58.57.86.66.79.48.27.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax5.45.94.64.86.34.64.56.17.27.38.110.310.410.38.36.57.86.96.76.67.47.77.47.09.48.47.38.87.58.57.86.66.79.48.27.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax country:CA100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

country:CN



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value146179191159243220262136218201148158205
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax2.42.32.52.02.72.32.81.62.52.52.22.32.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax2.42.32.52.02.72.32.81.62.52.52.22.32.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax country:CN100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

country:GB



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value110155305485704695574715669750437479622
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.82.03.96.17.77.26.18.47.69.26.57.18.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.82.03.96.17.77.26.18.47.69.26.57.18.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax country:GB100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

country:ID



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value204221223226205224234213215203191164199
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax3.32.92.92.82.22.32.52.52.42.52.92.42.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax3.32.92.92.82.22.32.52.52.42.52.92.42.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax country:ID100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

country:MY



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value21630225833433630733926234433529793237
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax3.53.93.34.23.73.23.63.13.94.14.41.43.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax3.53.93.34.23.73.23.63.13.94.14.41.43.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax country:MY100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

country:NO



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value446568632561588774734356663597583234689
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax7.27.48.17.16.48.07.84.27.57.48.73.59.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax7.27.48.17.16.48.07.84.27.57.48.73.59.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax country:NO100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

country:US



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value4217516350855225568661236025525653364764403841624240
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax68.567.065.665.762.163.363.861.860.758.760.461.456.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax68.567.065.665.762.163.363.861.860.758.760.461.456.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax country:US100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:NonUs



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-31
Value52327575277369159
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.10.00.00.00.80.93.10.50.12.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.10.00.00.00.80.93.10.50.12.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:NonUs100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Revenues

us-gaap:Revenues



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-30
Value4811814010093838010057103611016592408961873671958882777172546516557550156766750786608002118511291714701160481398515470141421465115279150891516616083149031669517668
Percentage of Revenues100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax78.1105.6130.1105.4109.9107.2107.6108.7101.9107.6107.6131.0103.4110.1100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ConsolidatedEntities

srt:ParentCompany



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value-16827783114163718911948191217159631648496
Percentage of Revenues-35.09.630.919.518.818.818.818.610.718.96.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-27.310.140.120.620.720.220.220.210.920.37.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:ParentCompany0.00.00.00.00.00.00.00.00.00.00.0

us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems

cop:BurlingtonResourcesLLC, srt:ReportableLegalEntities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value-422152473544486608496556
Percentage of Revenues-8.81.94.76.54.85.94.96.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-6.92.06.16.85.36.35.26.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax cop:BurlingtonResourcesLLC srt:ReportableLegalEntities0.00.00.00.00.00.00.00.0

cop:ConocophillipsCompany, srt:ReportableLegalEntities



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-30
Value141670865652613265445841
Percentage of Revenues29.470.267.461.064.463.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax23.091.471.167.069.368.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax cop:ConocophillipsCompany srt:ReportableLegalEntities48.8202.9162.1154.0151.1158.7

srt:NonGuarantorSubsidiaries, srt:ReportableLegalEntities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value44515592508866206731791374186557
Percentage of Revenues92.568.750.479.066.976.473.071.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax72.372.565.683.273.681.978.577.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:NonGuarantorSubsidiaries srt:ReportableLegalEntities136.7134.5119.4148.2130.2148.5144.9135.9

us-gaap:ConsolidationItems

srt:ConsolidationEliminations



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value1048-3077-5668-6073-5183-7929-5735-5429-4053-6461-1661
Percentage of Revenues21.8-37.8-56.2-72.5-51.5-76.5-56.4-58.8-45.2-74.0-23.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax17.0-39.9-73.1-76.4-56.6-82.0-60.7-63.8-46.1-79.6-24.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:ConsolidationEliminations0.00.00.00.00.00.00.00.00.00.00.0

Sales Revenue Net

Cost Of Goods And Services Sold

us-gaap:CostOfGoodsAndServicesSold



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value26612783271026743675398635303064371434352926
Percentage of CostOfGoodsAndServicesSold100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax43.236.134.933.640.241.237.436.042.242.343.8

us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems

cop:ConocophillipsCompany, srt:ReportableLegalEntities



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-30
Value261230783124349738803281
Percentage of CostOfGoodsAndServicesSold98.2113.6116.895.2109.9107.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax42.439.739.338.241.138.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax cop:ConocophillipsCompany srt:ReportableLegalEntities90.088.189.687.889.689.2

srt:NonGuarantorSubsidiaries, srt:ReportableLegalEntities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value9469048849461304137311971128
Percentage of CostOfGoodsAndServicesSold35.632.532.635.435.534.433.936.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax15.411.711.411.914.314.212.713.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:NonGuarantorSubsidiaries srt:ReportableLegalEntities29.121.720.721.225.225.823.423.4

us-gaap:ConsolidationItems

srt:ConsolidationEliminations



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value-897-1260-1252-1396-1126-1408-1546-1345-1129-993-741
Percentage of CostOfGoodsAndServicesSold-33.7-45.3-46.2-52.2-30.6-35.3-43.8-43.9-30.4-28.9-25.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-14.6-16.3-16.1-17.6-12.3-14.6-16.4-15.8-12.8-12.2-11.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:ConsolidationEliminations0.00.00.00.00.00.00.00.00.00.00.0

Operating Costs And Expenses

us-gaap:OperatingCostsAndExpenses



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
Value1173130213311418127113621367131311711324122413271298134215261445135415821834179818022943204120301895
Percentage of OperatingCostsAndExpenses100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax19.016.917.217.813.914.114.515.413.316.318.319.617.320.423.425.927.023.424.420.822.524.815.813.811.8

us-gaap:ConsolidatedEntities

srt:ParentCompany



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value0.00.00.01000000.00.00.00.00.00.00.00.0
Percentage of OperatingCostsAndExpenses0.00.00.00.10.00.00.00.00.00.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.00.00.00.00.00.00.00.00.00.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:ParentCompany0.00.00.00.00.00.00.00.00.00.00.0

us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems

cop:BurlingtonResourcesLLC, srt:ReportableLegalEntities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value1000000.00.00.00.01000000.00.00.00.0
Percentage of OperatingCostsAndExpenses0.10.00.00.00.10.00.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.00.00.00.00.00.00.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax cop:BurlingtonResourcesLLC srt:ReportableLegalEntities0.00.00.00.00.00.00.00.0

cop:ConocophillipsCompany, srt:ReportableLegalEntities



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-30
Value160290657180298253
Percentage of OperatingCostsAndExpenses13.621.846.314.221.819.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax2.63.78.32.03.23.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax cop:ConocophillipsCompany srt:ReportableLegalEntities5.58.318.84.56.96.9

srt:NonGuarantorSubsidiaries, srt:ReportableLegalEntities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value10131050109111131091106310841065
Percentage of OperatingCostsAndExpenses86.480.682.078.585.878.079.381.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax16.513.614.114.011.911.011.512.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:NonGuarantorSubsidiaries srt:ReportableLegalEntities31.125.225.624.921.120.021.222.1

us-gaap:ConsolidationItems

srt:ConsolidationEliminations



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value-1-1-50-353-1-6-16-5-38-14-1
Percentage of OperatingCostsAndExpenses-0.1-0.1-3.8-24.9-0.1-0.4-1.2-0.4-3.2-1.1-0.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.0-0.0-0.6-4.4-0.0-0.1-0.2-0.1-0.4-0.2-0.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:ConsolidationEliminations0.00.00.00.00.00.00.00.00.00.00.0

Costs And Expenses

Research And Development Expense

Selling General And Administrative Expense

us-gaap:SellingGeneralAndAdministrativeExpense



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-09-302009-06-302009-03-31
Value-3187871291536511911899138132134157167203167186283293218159132203218182247249193165214330235685599466514499630493438444452427476475
Percentage of SellingGeneralAndAdministrativeExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.02.41.11.61.70.71.31.41.11.72.02.02.12.53.13.03.74.23.92.52.01.11.61.51.11.81.61.41.11.42.21.54.34.02.82.90.9-0.81.01.01.01.11.11.31.5

us-gaap:ConsolidatedEntities

srt:ParentCompany



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value22124121412
Percentage of SellingGeneralAndAdministrativeExpense-66.71.11.11.62.61.51.70.84.00.71.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.00.00.00.00.00.00.00.00.00.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:ParentCompany0.00.00.00.00.00.00.00.00.00.00.0

us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems

cop:ConocophillipsCompany, srt:ReportableLegalEntities



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-30
Value-2360831299981
Percentage of SellingGeneralAndAdministrativeExpense766.769.064.384.383.268.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.40.81.01.41.01.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax cop:ConocophillipsCompany srt:ReportableLegalEntities-0.81.72.43.22.32.2

srt:NonGuarantorSubsidiaries, srt:ReportableLegalEntities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value2336264425291836
Percentage of SellingGeneralAndAdministrativeExpense-766.719.329.934.116.344.615.130.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.40.50.30.60.30.30.20.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:NonGuarantorSubsidiaries srt:ReportableLegalEntities0.70.90.61.00.50.50.40.7

us-gaap:ConsolidationItems

srt:ConsolidationEliminations



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value-5000-5000-5-10
Percentage of SellingGeneralAndAdministrativeExpense166.70.00.00.0-3.30.00.00.0-5.1-0.70.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.10.00.00.0-0.10.00.00.0-0.1-0.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:ConsolidationEliminations0.00.00.00.00.00.00.00.00.00.00.0

Interest Expense

Interest And Debt Expense

us-gaap:InterestAndDebtExpense



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
Value202196184165233188186177184226251306315317335312281268240210202173149155171192151139130161161197209228235247262273264349301375336268310
Percentage of InterestAndDebtExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax3.32.52.42.12.51.92.02.12.12.83.84.54.24.85.15.65.64.03.22.42.51.51.21.11.11.41.01.00.91.11.11.31.31.51.41.40.5-0.40.60.80.70.90.80.81.0

us-gaap:ConsolidatedEntities

srt:ParentCompany



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value7072727069767276718086
Percentage of InterestAndDebtExpense34.736.739.142.429.640.438.742.938.635.434.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.10.90.90.90.80.80.80.90.81.01.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:ParentCompany0.00.00.00.00.00.00.00.00.00.00.0

us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems

cop:BurlingtonResourcesLLC, srt:ReportableLegalEntities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value3333343333111014
Percentage of InterestAndDebtExpense16.316.818.520.014.25.95.47.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.50.40.40.40.40.10.10.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax cop:BurlingtonResourcesLLC srt:ReportableLegalEntities0.00.00.00.00.00.00.00.0

cop:ConocophillipsCompany, srt:ReportableLegalEntities



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-30
Value107109143149156141
Percentage of InterestAndDebtExpense53.059.286.763.983.979.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.71.41.81.61.71.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax cop:ConocophillipsCompany srt:ReportableLegalEntities3.73.14.13.73.63.8

srt:NonGuarantorSubsidiaries, srt:ReportableLegalEntities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value29034-1550354143
Percentage of InterestAndDebtExpense14.40.018.5-9.121.518.622.024.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.50.00.4-0.20.50.40.40.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:NonGuarantorSubsidiaries srt:ReportableLegalEntities0.90.00.8-0.31.00.70.80.9

us-gaap:ConsolidationItems

srt:ConsolidationEliminations



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value-37-52-65-66-6855-142-97-9434-162
Percentage of InterestAndDebtExpense-18.3-26.5-35.3-40.0-29.229.3-76.3-54.8-51.115.0-64.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.6-0.7-0.8-0.8-0.70.6-1.5-1.1-1.10.4-2.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:ConsolidationEliminations0.00.00.00.00.00.00.00.00.00.00.0

Interest Expense Debt

Other Nonoperating Income Expense

us-gaap:OtherNonoperatingIncomeExpense



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value-1539222262172702-500309416-52386654731
Percentage of OtherNonoperatingIncomeExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-25.02.93.42.27.7-5.23.34.9-0.64.81.00.70.4

us-gaap:ConsolidatedEntities

srt:ParentCompany



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value-1000000.00.00.00.01000000.00.00.00.00.01000000.00.0
Percentage of OtherNonoperatingIncomeExpense0.10.00.00.00.1-0.00.00.0-0.00.30.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.00.00.00.00.00.00.00.00.00.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:ParentCompany0.00.00.00.00.00.00.00.00.00.00.0

us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems

cop:BurlingtonResourcesLLC, srt:ReportableLegalEntities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value12210000
Percentage of OtherNonoperatingIncomeExpense-0.10.90.80.60.0-0.00.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.00.00.00.00.00.00.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax cop:BurlingtonResourcesLLC srt:ReportableLegalEntities0.00.00.00.00.00.00.00.0

cop:ConocophillipsCompany, srt:ReportableLegalEntities



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-30
Value-164613644508-61394
Percentage of OtherNonoperatingIncomeExpense107.051.925.672.4-19.794.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-26.71.80.65.6-0.64.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax cop:ConocophillipsCompany srt:ReportableLegalEntities-56.73.91.312.8-1.410.7

srt:NonGuarantorSubsidiaries, srt:ReportableLegalEntities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value1073312412719311437022
Percentage of OtherNonoperatingIncomeExpense-7.014.947.373.827.5-22.8119.75.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.70.41.61.62.11.23.90.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:NonGuarantorSubsidiaries srt:ReportableLegalEntities3.30.82.92.83.72.17.20.5

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

us-gaap:OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-30
Value-79720424570176-42059-35978-13450927184-719-82-2241183-712-2519787-2719-1986-1932677-226-989621-1674-644-188612-500834619-2970540
Percentage of OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-12.92.63.20.91.9-4.30.6-4.20.9-1.77.60.42.4-10.9-1.3-4.023.6-10.5-33.69.1-34.0-16.8-15.04.6-1.4-7.14.0-11.8-4.4-1.24.1-3.35.24.2-17.83.1

Income Loss From Continuing Operations

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

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-31
Value-1563128634932058268726722906261917761325653-4361-232-8-1654-1644-2224-5051-1741-91-356255334603698440536963787359139454265
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-25.416.745.025.929.427.630.830.820.216.39.8-64.3-3.1-0.1-25.4-29.5-44.3-74.7-23.2-1.1-4.419.823.523.028.526.125.823.826.026.5

us-gaap:ConsolidatedEntities

srt:ParentCompany



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value-17547043041156418181847185016228701561385
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest112.254.787.176.067.769.163.761.949.0117.859.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-28.59.139.219.719.919.119.619.19.919.25.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:ParentCompany0.00.00.00.00.00.00.00.00.00.00.0

us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems

cop:BurlingtonResourcesLLC, srt:ReportableLegalEntities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value-456119439511452519528484
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest29.29.312.624.816.819.418.218.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-7.41.55.76.44.95.45.65.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax cop:BurlingtonResourcesLLC srt:ReportableLegalEntities0.00.00.00.00.00.00.00.0

cop:ConocophillipsCompany, srt:ReportableLegalEntities



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-30
Value-165930221377192618711724
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest106.186.566.971.764.465.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-26.939.017.321.019.820.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax cop:ConocophillipsCompany srt:ReportableLegalEntities-57.186.539.548.443.246.8

srt:NonGuarantorSubsidiaries, srt:ReportableLegalEntities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value3181581129228642474365232072771
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest-20.3122.937.0139.292.1136.7110.4105.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax5.220.516.736.027.037.833.932.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:NonGuarantorSubsidiaries srt:ReportableLegalEntities9.838.030.364.147.968.662.657.4

us-gaap:ConsolidationItems

srt:ConsolidationEliminations



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value1988-1764-4301-4258-3983-6570-4031-3982-2787-5487-757
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest-127.2-137.2-123.1-206.9-148.2-245.9-138.7-152.0-156.9-414.1-115.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax32.3-22.9-55.5-53.5-43.5-68.0-42.7-46.8-31.7-67.6-11.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:ConsolidationEliminations0.00.00.00.00.00.00.00.00.00.00.0

Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest

Income Loss From Continuing Operations Before Income Taxes Domestic

Income Loss From Continuing Operations Before Income Taxes Foreign

Income Tax Expense Benefit

us-gaap:IncomeTaxExpenseBenefit



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-09-302009-06-302009-03-31
Value1485434224618417941033965876-273217-935-83111-628-586-768-1614-68573-642-2979041395158110501966163017631437194523342520242325492773275422392205201118781431142610631176
Percentage of IncomeTaxExpenseBenefit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax2.47.05.45.89.28.210.911.310.0-3.43.2-13.8-11.10.2-9.6-10.5-15.3-23.9-9.10.8-8.0-2.57.09.59.97.512.711.512.09.412.915.415.716.315.315.74.9-3.04.74.44.23.33.53.03.8

us-gaap:ConsolidatedEntities

srt:ParentCompany



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value-15-16-15-16-15-21-11-18-18-18-35
Percentage of IncomeTaxExpenseBenefit-10.1-2.9-3.6-3.5-1.8-2.6-1.1-1.9-2.16.6-16.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.2-0.2-0.2-0.2-0.2-0.2-0.1-0.2-0.2-0.2-0.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:ParentCompany0.00.00.00.00.00.00.00.00.00.00.0

us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems

cop:BurlingtonResourcesLLC, srt:ReportableLegalEntities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value-6-32-5-4-5-16-6-9
Percentage of IncomeTaxExpenseBenefit-4.1-5.9-1.2-0.9-0.6-2.0-0.6-0.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.1-0.4-0.1-0.1-0.1-0.2-0.1-0.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax cop:BurlingtonResourcesLLC srt:ReportableLegalEntities0.00.00.00.00.00.00.00.0

cop:ConocophillipsCompany, srt:ReportableLegalEntities



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-30
Value22-92-26036-3219
Percentage of IncomeTaxExpenseBenefit14.9-21.8-56.44.3-3.12.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.4-1.2-3.30.4-0.30.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax cop:ConocophillipsCompany srt:ReportableLegalEntities0.8-2.6-7.50.9-0.70.5

srt:NonGuarantorSubsidiaries, srt:ReportableLegalEntities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value1477235347418258411082973
Percentage of IncomeTaxExpenseBenefit99.3133.1126.5160.798.1105.9104.7100.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax2.49.46.99.39.08.711.511.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:NonGuarantorSubsidiaries srt:ReportableLegalEntities4.517.412.516.616.015.821.120.2

Income Taxes Paid Net

us-gaap:IncomeTaxesPaidNet



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-09-30
Value465695638872700104962013075215942371871502127-499133147204425-2538441038165466786011891662119921741698323414622858225127302722245220972329159618341536
Percentage of IncomeTaxesPaidNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax7.69.08.211.07.710.96.615.45.97.33.52.82.00.30.4-9.02.72.22.74.9-3.27.18.011.34.26.17.711.88.214.211.321.39.119.213.515.54.8-3.34.45.13.64.33.8

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
Value-17117433071159718461878187316549001598436-3426599-19-1026-1058-1456-3437-1056-164286-24272720982137250324962063215314411813228929553410263134193042205330694183211217581487875816
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 RevenueFromContractWithCustomerExcludingAssessedTax-27.89.639.620.120.219.419.819.410.219.76.5-50.58.0-0.3-15.7-19.0-29.0-50.8-14.1-1.93.6-0.221.114.313.317.916.114.614.79.412.015.118.422.915.819.45.4-2.86.59.24.74.13.72.52.7

us-gaap:ConsolidatedEntities

srt:ParentCompany



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value-17397203056158018331868186116408881579420
Percentage of ProfitLoss101.696.999.598.999.399.599.499.298.798.896.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-28.29.339.419.920.019.319.719.310.119.46.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:ParentCompany0.00.00.00.00.00.00.00.00.00.00.0

us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems

cop:BurlingtonResourcesLLC, srt:ReportableLegalEntities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value-450151444515457535534493
Percentage of ProfitLoss26.320.314.532.224.828.528.529.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-7.32.05.76.55.05.55.75.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax cop:BurlingtonResourcesLLC srt:ReportableLegalEntities0.00.00.00.00.00.00.00.0

cop:ConocophillipsCompany, srt:ReportableLegalEntities



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-30
Value-168131141637189019031705
Percentage of ProfitLoss98.2101.4102.5102.4101.6103.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-27.340.120.620.720.120.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax cop:ConocophillipsCompany srt:ReportableLegalEntities-57.989.146.947.543.946.3

srt:NonGuarantorSubsidiaries, srt:ReportableLegalEntities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value17185875821231649281121251798
Percentage of ProfitLoss-10.0115.524.7132.989.3149.7113.5108.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax2.811.19.826.718.029.122.521.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:NonGuarantorSubsidiaries srt:ReportableLegalEntities5.320.617.847.531.952.841.537.3

us-gaap:ConsolidationItems

srt:ConsolidationEliminations



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value1988-1764-4301-4258-3983-6570-4031-3982-2787-5487-757
Percentage of ProfitLoss-116.2-237.4-140.1-266.6-215.8-349.8-215.2-240.7-309.7-343.4-173.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax32.3-22.9-55.5-53.5-43.5-68.0-42.7-46.8-31.7-67.6-11.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:ConsolidationEliminations0.00.00.00.00.00.00.00.00.00.00.0

us-gaap:StatementEquityComponents

us-gaap:NoncontrollingInterest



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-09-30
Value28231517131012141219161413161413131315151415231714161613141515221820151714121419142917
Percentage of ProfitLoss-1.63.10.51.10.70.50.60.81.31.23.7-0.42.2-84.2-1.4-1.2-0.9-0.4-1.4-9.14.9-62.50.80.80.70.60.60.60.71.00.81.00.60.60.60.50.50.60.50.50.71.61.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.50.30.20.20.10.10.10.20.10.20.20.20.20.20.20.20.30.20.20.20.20.10.20.10.10.10.10.10.10.10.10.10.10.10.10.10.0-0.00.00.00.00.10.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:NoncontrollingInterest0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:RetainedEarnings



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312012-12-312012-09-30
Value-173972030561580183318681861164088814261798
Percentage of ProfitLoss101.696.999.598.999.399.599.499.298.799.099.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-28.29.339.419.920.019.319.719.310.19.311.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.00.00.0

Comprehensive Income Net Of Tax

us-gaap:ComprehensiveIncomeNetOfTax



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-09-302009-06-30
Value-2527101732291667202212472056137497713531470-3821818-784-1113-1296-368-3572-3555769-2415-25267912777192317773352412153011742260179838233273-306398038022409557927702308163831843975
Percentage of ComprehensiveIncomeNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-41.013.241.621.022.112.921.816.211.116.722.0-56.310.9-11.9-17.1-23.2-7.3-52.8-47.48.9-30.2-21.36.118.912.012.721.72.910.47.715.011.923.822.0-1.822.56.7-3.211.86.15.13.87.911.2

us-gaap:ConsolidatedEntities

srt:ParentCompany



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value-2527101732291667202212472056137497713531470
Percentage of ComprehensiveIncomeNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-41.013.241.621.022.112.921.816.211.116.722.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:ParentCompany0.00.00.00.00.00.00.00.00.00.00.0

us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems

cop:BurlingtonResourcesLLC, srt:ReportableLegalEntities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value-1047285384623581215612302
Percentage of ComprehensiveIncomeNetOfTax41.428.011.937.428.717.229.822.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-17.03.75.07.86.32.26.53.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax cop:BurlingtonResourcesLLC srt:ReportableLegalEntities0.00.00.00.00.00.00.00.0

cop:ConocophillipsCompany, srt:ReportableLegalEntities



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-30
Value-246932871724207920981439
Percentage of ComprehensiveIncomeNetOfTax97.7101.8103.4102.8102.0104.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-40.142.421.722.722.216.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax cop:ConocophillipsCompany srt:ReportableLegalEntities-85.094.149.452.248.539.1

srt:NonGuarantorSubsidiaries, srt:ReportableLegalEntities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value-649112193921821816264222771429
Percentage of ComprehensiveIncomeNetOfTax25.7110.229.1130.989.8211.9110.7104.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-10.514.512.127.419.827.324.116.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:NonGuarantorSubsidiaries srt:ReportableLegalEntities-19.927.022.048.935.149.644.529.6

us-gaap:ConsolidationItems

srt:ConsolidationEliminations



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value4165-2481-4610-4529-4476-5369-4433-3170-2891-5357-2422
Percentage of ComprehensiveIncomeNetOfTax-164.8-244.0-142.8-271.7-221.4-430.6-215.6-230.7-295.9-395.9-164.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax67.6-32.2-59.4-56.9-48.9-55.5-46.9-37.3-32.9-66.0-36.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:ConsolidationEliminations0.00.00.00.00.00.00.00.00.00.00.0

Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest

us-gaap:ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-09-302009-06-30
Value282315171310121412191614131614131313151514152317141616131415152218201517-14121419-14291716
Percentage of ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.50.30.20.20.10.10.10.20.10.20.20.20.20.20.20.20.30.20.20.20.20.10.20.10.10.10.10.10.10.10.10.10.10.10.10.1-0.0-0.00.00.0-0.00.10.00.0

Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest

us-gaap:ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-09-302009-06-30
Value-2499104032441684203512572068138898913721486-3807831-768-1099-1283-355-3559-3540784-2401-25118142794193717933368425154411892275182038413293-291399738162421559327892322211132013991
Percentage of ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-40.613.541.821.222.213.021.916.311.216.922.2-56.111.1-11.7-16.9-23.0-7.1-52.6-47.29.1-30.0-21.26.319.012.112.821.83.010.57.815.112.023.922.1-1.722.66.8-3.311.86.15.24.98.011.3

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
Value-17397203056158018331868186116408881579420-3440586-35-1040-1071-1469-3450-1071-179272-39270420812123248724802050213914261798226729373390261634023028204130554164209817291470859800
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 RevenueFromContractWithCustomerExcludingAssessedTax-28.29.339.419.920.019.319.719.310.119.46.3-50.77.8-0.5-16.0-19.2-29.3-51.0-14.3-2.13.4-0.320.914.213.217.816.014.514.69.311.914.918.322.715.719.35.4-2.76.59.14.74.03.72.42.6

us-gaap:ConsolidatedEntities

srt:ParentCompany



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value-17397203056158018331868186116408881579420
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-28.29.339.419.920.019.319.719.310.119.46.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:ParentCompany0.00.00.00.00.00.00.00.00.00.00.0

us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems

cop:BurlingtonResourcesLLC, srt:ReportableLegalEntities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value-450151444515457535534493
Percentage of NetIncomeLoss25.921.014.532.624.928.628.730.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-7.32.05.76.55.05.55.75.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax cop:BurlingtonResourcesLLC srt:ReportableLegalEntities0.00.00.00.00.00.00.00.0

cop:ConocophillipsCompany, srt:ReportableLegalEntities



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-30
Value-168131141637189019031705
Percentage of NetIncomeLoss96.7101.9103.6103.1102.3104.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-27.340.120.620.720.120.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax cop:ConocophillipsCompany srt:ReportableLegalEntities-57.989.146.947.543.946.3

srt:NonGuarantorSubsidiaries, srt:ReportableLegalEntities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value14383574321061636280121131784
Percentage of NetIncomeLoss-8.2116.024.3133.389.3149.9113.5108.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax2.310.89.626.517.929.022.421.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:NonGuarantorSubsidiaries srt:ReportableLegalEntities4.420.117.447.231.752.641.337.0

us-gaap:ConsolidationItems

srt:ConsolidationEliminations



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value1988-1764-4301-4258-3983-6570-4031-3982-2787-5487-757
Percentage of NetIncomeLoss-114.3-245.0-140.7-269.5-217.3-351.7-216.6-242.8-313.9-347.5-180.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax32.3-22.9-55.5-53.5-43.5-68.0-42.7-46.8-31.7-67.6-11.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:ConsolidationEliminations0.00.00.00.00.00.00.00.00.00.00.0

us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:CorporateNonSegment, us-gaap:CorporateAndOther



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-31
Value-1775-14-193271-24728-541-327-424-348
Percentage of NetIncomeLoss102.1-0.5-12.214.8-13.31.7-60.9-77.912.3-59.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-28.8-0.2-2.43.0-2.60.3-6.1-4.9-6.3-4.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:CorporateNonSegment us-gaap:CorporateAndOther-13653.8-19.4-4825.0193.6-316.735.0-13525.0-760.5-2650.0-994.3

us-gaap:OperatingSegments, cop:AlaskaSegment



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-06-302017-03-31
Value813143064623844454274185241175199-11
Percentage of NetIncomeLoss-4.743.610.029.220.923.822.925.559.074.4-5.8-1.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.34.13.95.84.24.64.54.96.014.52.9-0.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments cop:AlaskaSegment7.323.223.632.427.330.528.629.837.896.818.6-1.1

us-gaap:OperatingSegments, cop:AsiaPacificAndMiddleEast



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-06-302017-03-31
Value398613517525577466461-2172236
Percentage of NetIncomeLoss-22.920.132.728.631.028.451.963.140.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax6.57.96.55.76.15.55.2-32.03.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments cop:AsiaPacificAndMiddleEast39.756.550.239.142.846.337.9-242.423.1

us-gaap:OperatingSegments, cop:LowerFortyEight



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-06-302017-03-31
Value-43726206193513410308-2536-362
Percentage of NetIncomeLoss25.10.913.010.527.625.034.773.7-61.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-7.10.32.62.15.44.83.5-37.4-4.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments cop:LowerFortyEight-14.10.75.44.711.310.67.8-82.1-11.2

us-gaap:OperatingSegments, cop:OtherInternational



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-06-302017-03-31
Value287381131316-5-44-9-48
Percentage of NetIncomeLoss-1.62.45.17.117.0-0.3-5.00.3-8.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.50.91.01.43.3-0.1-0.5-0.1-0.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments cop:OtherInternational0.00.00.00.00.00.00.00.00.0

us-gaap:OperatingSegments, country:CA



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-31
Value-109511001223433-652801379948
Percentage of NetIncomeLoss6.31.76.36.71.82.0-7.366.7-40.1161.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-1.80.71.31.30.40.4-0.74.220.312.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments country:CA-32.714.226.221.38.06.3-10.251.5197.3120.9

us-gaap:OperatingSegments, srt:Europe



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-30
Value75200140720724129024585
Percentage of NetIncomeLoss-4.365.525.811.313.017.727.620.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.225.85.12.32.63.42.81.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments srt:Europe12.5163.331.013.415.317.615.27.7

Net Income Loss Attributable To Noncontrolling Interest

us-gaap:NetIncomeLossAttributableToNoncontrollingInterest



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-09-302009-06-302009-03-31
Value282315171310121412191614131614131313151514152317141616131415152218201517141214191429171616
Percentage of NetIncomeLossAttributableToNoncontrollingInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.50.30.20.20.10.10.10.20.10.20.20.20.20.20.20.20.30.20.20.20.20.10.20.10.10.10.10.10.10.10.10.10.10.10.10.10.0-0.00.00.00.00.10.00.00.1

us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems

srt:NonGuarantorSubsidiaries, srt:ReportableLegalEntities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value2823151713101214
Percentage of NetIncomeLossAttributableToNoncontrollingInterest100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.50.30.20.20.10.10.10.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:NonGuarantorSubsidiaries srt:ReportableLegalEntities0.90.60.40.40.30.20.20.3

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
Value650337051470340712617149869980705566893670727733627486178004879738977294284960549983497484105949112003110042116539118986121648120025118057119760116947117780117144115369114008162881153230154689160068159643156314155333151456154810152588142865
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ConsolidatedEntities

srt:ParentCompany



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-31
Value3161534085353833209632032299753127429440
Percentage of Assets48.648.350.345.044.842.844.340.1
Percentage of Assets48.648.350.345.044.842.844.340.1
Percentage of Assets srt:ParentCompany100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems

cop:BurlingtonResourcesLLC, srt:ReportableLegalEntities



Period End2020-03-312019-12-312019-09-302019-06-302018-12-31
Value1100711917163981677415504
Percentage of Assets16.916.923.323.522.2
Percentage of Assets16.916.923.323.522.2
Percentage of Assets cop:BurlingtonResourcesLLC srt:ReportableLegalEntities100.0100.0100.0100.0100.0

cop:ConocophillipsCompany, srt:ReportableLegalEntities



Period End2020-03-312019-12-312019-09-302019-06-302018-12-312018-09-30
Value577936011463652596456105861534
Percentage of Assets88.985.390.583.787.387.2
Percentage of Assets88.985.390.583.787.387.2
Percentage of Assets cop:ConocophillipsCompany srt:ReportableLegalEntities100.0100.0100.0100.0100.0100.0

srt:NonGuarantorSubsidiaries, srt:ReportableLegalEntities



Period End2020-03-312019-12-312019-09-302019-06-302018-12-31
Value6308065191686507100072563
Percentage of Assets97.092.597.699.6103.7
Percentage of Assets97.092.597.699.6103.7
Percentage of Assets srt:NonGuarantorSubsidiaries srt:ReportableLegalEntities100.0100.0100.0100.0100.0

us-gaap:ConsolidationItems

srt:ConsolidationEliminations



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-31
Value-98462-100793-113743-108254-110589-109120-101143-89809
Percentage of Assets-151.4-142.9-161.7-151.9-154.7-155.9-143.4-122.4
Percentage of Assets-151.4-142.9-161.7-151.9-154.7-155.9-143.4-122.4
Percentage of Assets srt:ConsolidationEliminations100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:CorporateNonSegment, us-gaap:CorporateAndOther



Period End2020-03-312019-12-312019-09-302019-06-302018-12-312018-09-302018-06-302018-03-312017-12-31
Value934911164109099518857377897211834211456
Percentage of Assets14.415.815.513.412.311.010.511.815.6
Percentage of Assets14.415.815.513.412.311.010.511.815.6
Percentage of Assets us-gaap:CorporateNonSegment us-gaap:CorporateAndOther100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OperatingSegments, cop:AlaskaSegment



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-12-182018-06-302018-03-312017-12-312016-12-312015-12-31
Value156031545315513153921506614648146481275812610121081231412555
Percentage of Assets24.021.922.121.621.120.90.018.517.816.513.712.9
Percentage of Assets24.021.922.121.621.120.90.018.517.816.513.712.9
Percentage of Assets us-gaap:OperatingSegments cop:AlaskaSegment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OperatingSegments, cop:AsiaPacificAndMiddleEast



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-06-302018-03-312017-12-31
Value143371471615091152301602516151164851675316985
Percentage of Assets22.020.921.521.422.423.123.923.723.2
Percentage of Assets22.020.921.521.422.423.123.923.723.2
Percentage of Assets us-gaap:OperatingSegments cop:AsiaPacificAndMiddleEast100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OperatingSegments, cop:LowerFortyEight



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-06-302018-03-312017-12-31
Value127171442514601147921472014888148901458414632
Percentage of Assets19.620.520.820.820.621.321.620.619.9
Percentage of Assets19.620.520.820.820.621.321.620.619.9
Percentage of Assets us-gaap:OperatingSegments cop:LowerFortyEight100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OperatingSegments, cop:OtherInternational



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-06-302018-03-312017-12-31
Value28928589888789629797
Percentage of Assets0.40.40.10.10.10.10.10.10.1
Percentage of Assets0.40.40.10.10.10.10.10.10.1
Percentage of Assets us-gaap:OperatingSegments cop:OtherInternational100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OperatingSegments, country:CA



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value5682635061966291619157485950589760746214
Percentage of Assets8.79.08.88.88.78.28.48.68.68.5
Percentage of Assets8.79.08.88.88.78.28.48.68.68.5
Percentage of Assets us-gaap:OperatingSegments country:CA100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OperatingSegments, srt:Europe



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-31
Value70568121794199501018698831189511870
Percentage of Assets10.811.511.314.014.214.116.916.2
Percentage of Assets10.811.511.314.014.214.116.916.2
Percentage of Assets us-gaap:OperatingSegments srt:Europe100.0100.0100.0100.0100.0100.0100.0100.0

Liabilities

us-gaap:Liabilities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312008-12-31
Value33646354643510138187385173791638477377144000942561441494750552372545465782858223604275740261394630346103464266633256596266404655656822368015685406871767492675659583887496883638949089122872058541685511913938953186600
Percentage of Liabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets51.750.349.953.653.954.254.554.756.658.059.060.959.560.861.360.660.558.957.956.355.555.153.254.255.355.557.058.258.258.758.559.358.857.157.155.955.855.855.056.559.058.760.6

us-gaap:ConsolidatedEntities

srt:ParentCompany



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-31
Value68585662679556815735459858865395
Percentage of Liabilities20.416.019.414.914.912.115.312.7
Percentage of Assets10.58.09.78.08.06.68.37.4
Percentage of Assets srt:ParentCompany21.716.619.217.717.915.318.818.3

us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems

cop:BurlingtonResourcesLLC, srt:ReportableLegalEntities



Period End2020-03-312019-12-312019-09-302019-06-302018-12-31
Value31613024317331723106
Percentage of Liabilities9.48.59.08.38.2
Percentage of Assets4.94.34.54.54.4
Percentage of Assets cop:BurlingtonResourcesLLC srt:ReportableLegalEntities28.725.419.318.920.0

cop:ConocophillipsCompany, srt:ReportableLegalEntities



Period End2020-03-312019-12-312019-09-302019-06-302018-12-312018-09-30
Value196531950421743210242460324395
Percentage of Liabilities58.455.061.955.164.963.4
Percentage of Assets30.227.730.929.535.234.6
Percentage of Assets cop:ConocophillipsCompany srt:ReportableLegalEntities34.032.434.235.240.339.6

srt:NonGuarantorSubsidiaries, srt:ReportableLegalEntities



Period End2020-03-312019-12-312019-09-302019-06-302018-12-31
Value2670528187281083141433061
Percentage of Liabilities79.479.580.182.387.2
Percentage of Assets41.140.040.044.147.2
Percentage of Assets srt:NonGuarantorSubsidiaries srt:ReportableLegalEntities42.343.240.944.245.6

us-gaap:ConsolidationItems

srt:ConsolidationEliminations



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-31
Value-22731-20913-24718-23104-24819-27452-24770-19990
Percentage of Liabilities-67.6-59.0-70.4-60.5-64.4-72.4-64.4-47.0
Percentage of Assets-35.0-29.7-35.1-32.4-34.7-39.2-35.1-27.2
Percentage of Assets srt:ConsolidationEliminations23.120.721.721.322.425.224.522.3

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
Value650337051470340712617149869980705566893670727733627486178004879738977294284960549983497484105949112003110042116539118986121648120025118057119760116947117780117144115369114008162881153230154689160068159643156314155333151456154810152588142865
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

us-gaap:ConsolidatedEntities

srt:ParentCompany



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-31
Value3161534085353833209632032299753127429440
Percentage of LiabilitiesAndStockholdersEquity48.648.350.345.044.842.844.340.1
Percentage of Assets48.648.350.345.044.842.844.340.1
Percentage of Assets srt:ParentCompany100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems

cop:BurlingtonResourcesLLC, srt:ReportableLegalEntities



Period End2020-03-312019-12-312019-09-302019-06-302018-12-31
Value1100711917163981677415504
Percentage of LiabilitiesAndStockholdersEquity16.916.923.323.522.2
Percentage of Assets16.916.923.323.522.2
Percentage of Assets cop:BurlingtonResourcesLLC srt:ReportableLegalEntities100.0100.0100.0100.0100.0

cop:ConocophillipsCompany, srt:ReportableLegalEntities



Period End2020-03-312019-12-312019-09-302019-06-302018-12-312018-09-30
Value577936011463652596456105861534
Percentage of LiabilitiesAndStockholdersEquity88.985.390.583.787.387.2
Percentage of Assets88.985.390.583.787.387.2
Percentage of Assets cop:ConocophillipsCompany srt:ReportableLegalEntities100.0100.0100.0100.0100.0100.0

srt:NonGuarantorSubsidiaries, srt:ReportableLegalEntities



Period End2020-03-312019-12-312019-09-302019-06-302018-12-31
Value6308065191686507100072563
Percentage of LiabilitiesAndStockholdersEquity97.092.597.699.6103.7
Percentage of Assets97.092.597.699.6103.7
Percentage of Assets srt:NonGuarantorSubsidiaries srt:ReportableLegalEntities100.0100.0100.0100.0100.0

us-gaap:ConsolidationItems

srt:ConsolidationEliminations



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-31
Value-98462-100793-113743-108254-110589-109120-101143-89809
Percentage of LiabilitiesAndStockholdersEquity-151.4-142.9-161.7-151.9-154.7-155.9-143.4-122.4
Percentage of Assets-151.4-142.9-161.7-151.9-154.7-155.9-143.4-122.4
Percentage of Assets srt:ConsolidationEliminations100.0100.0100.0100.0100.0100.0100.0100.0

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
Value31315349813514632976328593193931950310423054630607305003028635353349743617037544390893976244210486204865251911552745531553222520905111348508488034798747406459716653465224658067005969972685626936165371628376246755165
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 Assets48.249.650.046.346.045.645.345.043.241.740.738.840.239.038.439.139.240.841.743.444.244.546.545.544.344.142.741.541.441.041.140.340.842.642.543.843.843.944.743.240.640.938.6

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
Value131441691315217158001368313274147231160813187165121695419879107288609964192591093487899664119441084015068162531883620400190232255722602242352398915781169123706630218323913467835613346603531726666235932116720843
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 Assets20.224.021.622.219.119.020.916.818.622.522.625.512.29.610.29.611.09.09.110.79.912.913.715.517.016.118.819.320.620.513.714.822.819.720.921.722.322.222.717.615.213.914.6

us-gaap:ConsolidatedEntities

srt:ParentCompany



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-31
Value6657529625
Percentage of AssetsCurrent0.00.00.00.00.00.20.00.2
Percentage of Assets0.00.00.00.00.00.00.00.0
Percentage of Assets srt:ParentCompany0.00.00.00.00.00.10.00.1

us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems

cop:BurlingtonResourcesLLC, srt:ReportableLegalEntities



Period End2020-03-312019-12-312019-09-302019-06-302018-12-31
Value222278
Percentage of AssetsCurrent0.00.00.00.00.6
Percentage of Assets0.00.00.00.00.1
Percentage of Assets cop:BurlingtonResourcesLLC srt:ReportableLegalEntities0.00.00.00.00.5

cop:ConocophillipsCompany, srt:ReportableLegalEntities



Period End2020-03-312019-12-312019-09-302019-06-302018-12-312018-09-30
Value8126108288035544289875073
Percentage of AssetsCurrent61.864.052.834.467.734.5
Percentage of Assets12.515.411.47.612.87.2
Percentage of Assets cop:ConocophillipsCompany srt:ReportableLegalEntities14.118.012.69.114.78.2

srt:NonGuarantorSubsidiaries, srt:ReportableLegalEntities



Period End2020-03-312019-12-312019-09-302019-06-302018-12-31
Value7317865299891316412572
Percentage of AssetsCurrent55.751.265.683.394.7
Percentage of Assets11.312.314.218.518.0
Percentage of Assets srt:NonGuarantorSubsidiaries srt:ReportableLegalEntities11.613.314.618.517.3

us-gaap:ConsolidationItems

srt:ConsolidationEliminations



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-31
Value-2307-2575-2814-2815-3889-8392-3450-2893
Percentage of AssetsCurrent-17.6-15.2-18.5-17.8-28.4-63.2-23.4-17.5
Percentage of Assets-3.5-3.7-4.0-4.0-5.4-12.0-4.9-3.9
Percentage of Assets srt:ConsolidationEliminations2.32.62.52.63.57.73.43.2

Cash

Cash And Cash Equivalents At Carrying Value

us-gaap:CashAndCashEquivalentsAtCarryingValue



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-09-302009-06-302009-03-312008-12-312007-12-312006-12-31
Value39085088719359416218591537163234498463256911753431093610409028634866236824133813266450625408614275206246388339095422361812681044370757803437550561729454799641208555426418888027551456817
Percentage of CashAndCashEquivalentsAtCarryingValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets6.07.210.28.38.78.55.34.77.08.69.29.73.54.04.33.04.92.42.33.42.44.34.55.06.35.33.23.34.63.11.10.92.33.82.23.43.96.05.12.70.60.40.00.00.00.50.00.0

us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems

cop:ConocophillipsCompany, srt:ReportableLegalEntities



Period End2020-03-312019-12-312019-09-302019-06-302018-12-312018-09-30
Value1903343934501263142816
Percentage of CashAndCashEquivalentsAtCarryingValue48.767.648.021.324.10.4
Percentage of Assets2.94.94.91.82.00.0
Percentage of Assets cop:ConocophillipsCompany srt:ReportableLegalEntities3.35.75.42.12.30.0

srt:NonGuarantorSubsidiaries, srt:ReportableLegalEntities



Period End2020-03-312019-12-312019-09-302019-06-302018-12-31
Value20051649374346784487
Percentage of CashAndCashEquivalentsAtCarryingValue51.332.452.078.775.9
Percentage of Assets3.12.35.36.66.4
Percentage of Assets srt:NonGuarantorSubsidiaries srt:ReportableLegalEntities3.22.55.56.66.2

us-gaap:DerivativeInstrumentRisk, us-gaap:FairValueByMeasurementBasis, us-gaap:FinancialInstrument

cop:RemainingMaturitiesWithinOneYear, us-gaap:CarryingReportedAmountFairValueDisclosure, us-gaap:CommercialPaper



Period End2020-03-312019-12-31
Value198
Percentage of CashAndCashEquivalentsAtCarryingValue0.50.2
Percentage of Assets0.00.0
Percentage of Assets cop:RemainingMaturitiesWithinOneYear us-gaap:CarryingReportedAmountFairValueDisclosure us-gaap:CommercialPaper0.00.0

cop:RemainingMaturitiesWithinOneYear, us-gaap:CarryingReportedAmountFairValueDisclosure, us-gaap:CorporateDebtSecurities



Period End2020-03-312019-12-31
Value0.01000000.0
Percentage of CashAndCashEquivalentsAtCarryingValue0.00.0
Percentage of Assets0.00.0
Percentage of Assets cop:RemainingMaturitiesWithinOneYear us-gaap:CarryingReportedAmountFairValueDisclosure us-gaap:CorporateDebtSecurities0.00.0

us-gaap:FairValueByMeasurementBasis

us-gaap:CarryingReportedAmountFairValueDisclosure



Period End2020-03-312019-12-31
Value199
Percentage of CashAndCashEquivalentsAtCarryingValue0.50.2
Percentage of Assets0.00.0
Percentage of Assets us-gaap:CarryingReportedAmountFairValueDisclosure0.00.0

Short Term Investments

Receivables Net Current

us-gaap:ReceivablesNetCurrent



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
Value22643401361636513869406744993930419243203364316333593414332033163954451444645179537968077453820486518487840584208898918291837719174831652616416168051640815812134781319713215
Percentage of ReceivablesNetCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets3.54.85.15.15.45.86.45.75.95.94.54.13.83.83.53.54.04.64.24.64.95.86.36.77.27.27.07.27.67.88.06.810.710.810.610.510.310.18.78.78.7

us-gaap:ConsolidatedEntities

srt:ParentCompany



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-31
Value5556428624
Percentage of ReceivablesNetCurrent0.20.10.10.20.10.70.10.6
Percentage of Assets0.00.00.00.00.00.00.00.0
Percentage of Assets srt:ParentCompany0.00.00.00.00.00.10.00.1

us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems

cop:BurlingtonResourcesLLC, srt:ReportableLegalEntities



Period End2020-03-312019-12-312019-09-302019-06-302018-12-31
Value222278
Percentage of ReceivablesNetCurrent0.10.10.10.11.9
Percentage of Assets0.00.00.00.00.1
Percentage of Assets cop:BurlingtonResourcesLLC srt:ReportableLegalEntities0.00.00.00.00.5

cop:ConocophillipsCompany, srt:ReportableLegalEntities



Period End2020-03-312019-12-312019-09-302019-06-302018-12-312018-09-30
Value168820881905196956462614
Percentage of ReceivablesNetCurrent74.661.452.753.9138.858.1
Percentage of Assets2.63.02.72.88.13.7
Percentage of Assets cop:ConocophillipsCompany srt:ReportableLegalEntities2.93.53.03.39.24.2

srt:NonGuarantorSubsidiaries, srt:ReportableLegalEntities



Period End2020-03-312019-12-312019-09-302019-06-302018-12-31
Value28763881451844896707
Percentage of ReceivablesNetCurrent127.0114.1124.9123.0164.9
Percentage of Assets4.45.56.46.39.6
Percentage of Assets srt:NonGuarantorSubsidiaries srt:ReportableLegalEntities4.66.06.66.39.2

us-gaap:ConsolidationItems

srt:ConsolidationEliminations



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-31
Value-2307-2575-2814-2815-3889-8392-3423-2864
Percentage of ReceivablesNetCurrent-101.9-75.7-77.8-77.1-100.5-206.3-76.1-66.3
Percentage of Assets-3.5-3.7-4.0-4.0-5.4-12.0-4.9-3.9
Percentage of Assets srt:ConsolidationEliminations2.32.62.52.63.57.73.43.2

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
Value7261026955108910141007123910931053106010231019109710181108115010721124114312771233133113301291122111941268113411339651176117860724631716469867944519777417119730049405095
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 Assets1.11.51.41.51.41.41.81.61.51.41.41.31.21.11.21.21.11.21.11.11.11.11.11.11.01.01.11.01.00.81.01.03.73.04.64.45.03.35.04.74.73.23.6

us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems

cop:ConocophillipsCompany, srt:ReportableLegalEntities



Period End2020-03-312019-12-312019-09-302019-06-302018-12-312018-09-30
Value60168141152184198
Percentage of InventoryNet8.316.414.814.018.316.0
Percentage of Assets0.10.20.20.20.30.3
Percentage of Assets cop:ConocophillipsCompany srt:ReportableLegalEntities0.10.30.20.30.30.3

srt:NonGuarantorSubsidiaries, srt:ReportableLegalEntities



Period End2020-03-312019-12-312019-09-302019-06-302018-12-31
Value666858814937823
Percentage of InventoryNet91.783.685.286.081.7
Percentage of Assets1.01.21.21.31.2
Percentage of Assets srt:NonGuarantorSubsidiaries srt:ReportableLegalEntities1.11.31.21.31.1

Inventory Raw Materials And Supplies

us-gaap:InventoryRawMaterialsAndSupplies



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-31
Value534554556608595575566563550548600
Percentage of InventoryRawMaterialsAndSupplies100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.80.80.80.90.80.80.80.80.80.70.7

Prepaid Expense And Other Assets Current

us-gaap:PrepaidExpenseAndOtherAssetsCurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-31
Value19602259594255252857523085808941035876389729115178896417357831644167515641868168829112798282490019064875994761686197132462700
Percentage of PrepaidExpenseAndOtherAssetsCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets3.03.20.83.60.70.83.30.81.31.41.25.03.30.60.90.70.70.81.61.51.41.61.42.42.32.47.57.87.48.11.51.72.01.8

us-gaap:ConsolidatedEntities

srt:ParentCompany



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-31
Value1000000.01000000.00.01000000.01000000.01000000.00.01000000.0
Percentage of PrepaidExpenseAndOtherAssetsCurrent0.10.00.00.00.20.20.00.1
Percentage of Assets0.00.00.00.00.00.00.00.0
Percentage of Assets srt:ParentCompany0.00.00.00.00.00.00.00.0

us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems

cop:ConocophillipsCompany, srt:ReportableLegalEntities



Period End2020-03-312019-12-312019-09-302019-06-302018-12-312018-09-30
Value256352188173267159
Percentage of PrepaidExpenseAndOtherAssetsCurrent13.115.631.66.846.46.9
Percentage of Assets0.40.50.30.20.40.2
Percentage of Assets cop:ConocophillipsCompany srt:ReportableLegalEntities0.40.60.30.30.40.3

srt:NonGuarantorSubsidiaries, srt:ReportableLegalEntities



Period End2020-03-312019-12-312019-09-302019-06-302018-12-31
Value170319064062378307
Percentage of PrepaidExpenseAndOtherAssetsCurrent86.984.468.493.253.4
Percentage of Assets2.62.70.63.30.4
Percentage of Assets srt:NonGuarantorSubsidiaries srt:ReportableLegalEntities2.72.90.63.30.4

us-gaap:ConsolidationItems

srt:ConsolidationEliminations



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-31
Value000000-27-29
Percentage of PrepaidExpenseAndOtherAssetsCurrent0.00.00.00.00.00.0-1.2-2.8
Percentage of Assets0.00.00.00.00.00.0-0.0-0.0
Percentage of Assets srt:ConsolidationEliminations-0.0-0.0-0.0-0.0-0.0-0.00.00.0

Noncurrent Assets

Property Plant And Equipment Gross

Accumulated Depreciation Depletion And Amortization Property Plant And Equipment

us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302009-12-31
Value5542555477600146004366969648996666468169667106474864115620186640073075729847424373521704137442073854702567078670117695116689065321633996082459518589165989057220656946502964045659566364460671591145704953534
Percentage of AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets85.278.785.384.393.792.794.598.994.388.385.679.575.581.477.477.373.672.270.265.963.860.758.957.155.755.352.952.050.550.351.950.240.342.441.441.239.938.838.137.735.1

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
Value40645422694381444334459424569844736463064599745683466694684654440583316164963685660006644671828743877422075444757907542474025728277112969438678906726373612712278555984180830908426883765825548146081269866238770883947
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 Assets62.559.962.362.264.365.363.467.265.062.362.360.161.965.065.466.366.168.267.866.467.464.763.762.061.761.759.459.457.657.463.862.552.554.953.752.652.552.852.453.756.057.558.8

us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems

cop:ConocophillipsCompany, srt:ReportableLegalEntities



Period End2020-03-312019-12-312019-09-302019-06-302018-12-312018-09-30
Value359135523822402643674495
Percentage of PropertyPlantAndEquipmentNet8.88.48.79.19.610.0
Percentage of Assets5.55.05.45.66.26.4
Percentage of Assets cop:ConocophillipsCompany srt:ReportableLegalEntities6.25.96.06.77.27.3

srt:NonGuarantorSubsidiaries, srt:ReportableLegalEntities



Period End2020-03-312019-12-312019-09-302019-06-302018-12-31
Value3705438717399924030841796
Percentage of PropertyPlantAndEquipmentNet91.291.691.390.991.5
Percentage of Assets57.054.956.956.659.7
Percentage of Assets srt:NonGuarantorSubsidiaries srt:ReportableLegalEntities58.759.458.356.857.6

us-gaap:ConsolidationItems

srt:ConsolidationEliminations



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-31
Value00000-465-468-477
Percentage of PropertyPlantAndEquipmentNet0.00.00.00.00.0-1.0-1.0-1.0
Percentage of Assets0.00.00.00.00.0-0.7-0.7-0.7
Percentage of Assets srt:ConsolidationEliminations-0.0-0.0-0.0-0.0-0.00.40.50.5

Goodwill

Intangible Assets Net Excluding Goodwill

Finite Lived Intangible Assets Net

Deferred Tax Assets Liabilities Net

Other Assets Noncurrent

us-gaap:OtherAssetsNoncurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312008-12-31
Value23702426217421112303134412091188157211071081107611301160113010861094106395510201008888112611731050943908891885882902889995972992968909905756724820708552
Percentage of OtherAssetsNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets3.63.43.13.03.21.91.71.72.21.51.41.41.31.31.21.11.11.10.90.90.90.80.91.00.90.80.80.80.80.80.80.80.60.60.60.60.60.60.50.50.50.50.4

us-gaap:ConsolidatedEntities

srt:ParentCompany



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-31
Value4344641915
Percentage of OtherAssetsNoncurrent0.20.10.20.20.30.31.61.4
Percentage of Assets0.00.00.00.00.00.00.00.0
Percentage of Assets srt:ParentCompany0.00.00.00.00.00.00.10.1

us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems

cop:BurlingtonResourcesLLC, srt:ReportableLegalEntities



Period End2020-03-312019-12-312019-09-302019-06-302018-12-31
Value249253227228227
Percentage of OtherAssetsNoncurrent10.510.410.410.816.9
Percentage of Assets0.40.40.30.30.3
Percentage of Assets cop:BurlingtonResourcesLLC srt:ReportableLegalEntities2.32.11.41.41.5

cop:ConocophillipsCompany, srt:ReportableLegalEntities



Period End2020-03-312019-12-312019-09-302019-06-302018-12-312018-09-30
Value661765933852642484
Percentage of OtherAssetsNoncurrent27.931.542.940.447.840.0
Percentage of Assets1.01.11.31.20.90.7
Percentage of Assets cop:ConocophillipsCompany srt:ReportableLegalEntities1.11.31.51.41.10.8

srt:NonGuarantorSubsidiaries, srt:ReportableLegalEntities



Period End2020-03-312019-12-312019-09-302019-06-302018-12-31
Value20652210200319361269
Percentage of OtherAssetsNoncurrent87.191.192.191.794.4
Percentage of Assets3.23.12.82.71.8
Percentage of Assets srt:NonGuarantorSubsidiaries srt:ReportableLegalEntities3.33.42.92.71.7

us-gaap:ConsolidationItems

srt:ConsolidationEliminations



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-31
Value-609-805-993-909-725-798-930-1542
Percentage of OtherAssetsNoncurrent-25.7-33.2-45.7-43.1-31.5-59.4-76.9-139.3
Percentage of Assets-0.9-1.1-1.4-1.3-1.0-1.1-1.3-2.1
Percentage of Assets srt:ConsolidationEliminations0.60.80.90.80.70.70.91.7

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
Value60757043594289967370739574016638710993977131992675266909753773488825925682878734956311537141411619117117151291633516715183151744317383183603643028068289362934429218274192542125668266052369521780
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 Assets9.310.08.412.610.310.610.59.610.112.89.512.78.67.78.07.68.89.57.87.88.79.911.913.314.312.813.614.315.614.915.116.122.418.318.718.318.317.516.416.917.215.515.2

us-gaap:ConsolidatedEntities

srt:ParentCompany



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-31
Value5481538254825480
Percentage of LiabilitiesCurrent0.91.20.90.90.71.10.70.9
Percentage of Assets0.10.10.10.10.10.10.10.1
Percentage of Assets srt:ParentCompany0.20.20.10.30.20.30.20.3

us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems

cop:BurlingtonResourcesLLC, srt:ReportableLegalEntities



Period End2020-03-312019-12-312019-09-302019-06-302018-12-31
Value118695249124
Percentage of LiabilitiesCurrent1.91.00.90.51.7
Percentage of Assets0.20.10.10.10.2
Percentage of Assets cop:BurlingtonResourcesLLC srt:ReportableLegalEntities1.10.60.30.30.8

cop:ConocophillipsCompany, srt:ReportableLegalEntities



Period End2020-03-312019-12-312019-09-302019-06-302018-12-312018-09-30
Value282836693691401064204440
Percentage of LiabilitiesCurrent46.652.162.144.686.860.0
Percentage of Assets4.35.25.25.69.26.3
Percentage of Assets cop:ConocophillipsCompany srt:ReportableLegalEntities4.96.15.86.710.57.2

srt:NonGuarantorSubsidiaries, srt:ReportableLegalEntities



Period End2020-03-312019-12-312019-09-302019-06-302018-12-31
Value53825799496076709170
Percentage of LiabilitiesCurrent88.682.383.585.3124.0
Percentage of Assets8.38.27.110.813.1
Percentage of Assets srt:NonGuarantorSubsidiaries srt:ReportableLegalEntities8.58.97.210.812.6

us-gaap:ConsolidationItems

srt:ConsolidationEliminations



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-31
Value-2307-2575-2814-2815-3889-8401-3459-2903
Percentage of LiabilitiesCurrent-38.0-36.6-47.4-31.3-52.8-113.6-46.7-30.9
Percentage of Assets-3.5-3.7-4.0-4.0-5.4-12.0-4.9-4.0
Percentage of Assets srt:ConsolidationEliminations2.32.62.52.63.57.73.43.2

Debt Current

us-gaap:DebtCurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312008-12-31
Value126105121114113112958933725751331379810951089133613312079142717513819318216881664171258957255413519552335417970021013616606605936376308227631728370
Percentage of DebtCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.20.10.20.20.20.20.10.10.53.51.84.91.21.21.41.42.11.50.20.10.20.21.41.41.40.50.50.51.10.82.03.74.30.70.40.40.40.60.22.01.81.10.3

us-gaap:ConsolidatedEntities

srt:ParentCompany



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-31
Value-3-3-3-3-3-3-3-5
Percentage of DebtCurrent-2.4-2.9-2.5-2.6-2.7-2.7-3.2-0.2
Percentage of Assets-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0
Percentage of Assets srt:ParentCompany-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0

us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems

cop:BurlingtonResourcesLLC, srt:ReportableLegalEntities



Period End2020-03-312019-12-312019-09-302019-06-302018-12-31
Value1413141413
Percentage of DebtCurrent11.112.411.612.311.6
Percentage of Assets0.00.00.00.00.0
Percentage of Assets cop:BurlingtonResourcesLLC srt:ReportableLegalEntities0.10.10.10.10.1

cop:ConocophillipsCompany, srt:ReportableLegalEntities



Period End2020-03-312019-12-312019-09-302019-06-302018-12-312018-09-30
Value44331212
Percentage of DebtCurrent3.23.82.52.610.712.6
Percentage of Assets0.00.00.00.00.00.0
Percentage of Assets cop:ConocophillipsCompany srt:ReportableLegalEntities0.00.00.00.00.00.0

srt:NonGuarantorSubsidiaries, srt:ReportableLegalEntities



Period End2020-03-312019-12-312019-09-302019-06-302018-12-31
Value1119110710099
Percentage of DebtCurrent88.186.788.487.788.4
Percentage of Assets0.20.10.20.10.1
Percentage of Assets srt:NonGuarantorSubsidiaries srt:ReportableLegalEntities0.20.10.20.10.1

us-gaap:ConsolidationItems

srt:ConsolidationEliminations



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-31
Value00000-9-9-9
Percentage of DebtCurrent0.00.00.00.00.0-8.0-9.5-0.3
Percentage of Assets0.00.00.00.00.0-0.0-0.0-0.0
Percentage of Assets srt:ConsolidationEliminations-0.0-0.0-0.0-0.0-0.00.00.00.0

Accounts Payable Current

us-gaap:AccountsPayableCurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302009-12-31
Value290031763148361838153863388736423824400933783401349436313686374640884895517358336706798286929254960493141033310437104211001399829096215501965320835210182020318399160641537615485
Percentage of AccountsPayableCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets4.54.54.55.15.35.55.55.35.45.54.54.44.04.03.93.94.15.04.95.26.16.87.37.68.07.98.68.98.88.58.78.013.212.813.513.112.711.810.310.210.1

Taxes Payable Current

us-gaap:TaxesPayableCurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312008-12-31
Value85310301077121315391320158213011341103810057917564843945547014996598808641051165527703485271329112813365833662837281947514220457348365445487451864508410534024273
Percentage of TaxesPayableCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets1.31.51.51.72.21.92.21.91.91.41.31.00.90.50.40.60.70.50.60.80.80.91.42.32.92.32.42.43.12.92.52.52.92.83.03.03.43.13.33.02.72.23.0

us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems

cop:ConocophillipsCompany, srt:ReportableLegalEntities



Period End2020-03-312019-12-312019-09-302019-06-302018-12-312018-09-30
Value8579566185104
Percentage of TaxesPayableCurrent10.07.75.25.06.46.6
Percentage of Assets0.10.10.10.10.10.1
Percentage of Assets cop:ConocophillipsCompany srt:ReportableLegalEntities0.10.10.10.10.10.2

srt:NonGuarantorSubsidiaries, srt:ReportableLegalEntities



Period End2020-03-312019-12-312019-09-302019-06-302018-12-31
Value768951102111521235
Percentage of TaxesPayableCurrent90.092.394.895.093.6
Percentage of Assets1.21.31.51.61.8
Percentage of Assets srt:NonGuarantorSubsidiaries srt:ReportableLegalEntities1.21.51.51.61.7

Other Liabilities Current

us-gaap:OtherLiabilitiesCurrent



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
Value18522045103035051402125911801071113710298511394167999412991107137915101381122712041400139319051821167118412375245323671551167224272071201821122333212930272035326022342208
Percentage of OtherLiabilitiesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets2.82.91.54.92.01.81.71.61.61.41.11.81.91.11.41.21.41.51.31.11.11.21.21.61.51.41.52.02.12.01.31.51.51.41.31.31.51.41.91.32.11.51.5

us-gaap:ConsolidatedEntities

srt:ParentCompany



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-31
Value5784568557855785
Percentage of OtherLiabilitiesCurrent3.14.15.42.44.16.84.88.3
Percentage of Assets0.10.10.10.10.10.10.10.1
Percentage of Assets srt:ParentCompany0.20.20.20.30.20.30.20.3

us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems

cop:BurlingtonResourcesLLC, srt:ReportableLegalEntities



Period End2020-03-312019-12-312019-09-302019-06-302018-12-31
Value3835383535
Percentage of OtherLiabilitiesCurrent2.11.73.71.02.8
Percentage of Assets0.10.00.10.00.1
Percentage of Assets cop:BurlingtonResourcesLLC srt:ReportableLegalEntities0.30.30.20.20.2

cop:ConocophillipsCompany, srt:ReportableLegalEntities



Period End2020-03-312019-12-312019-09-302019-06-302018-12-312018-09-30
Value354408348632587404
Percentage of OtherLiabilitiesCurrent19.120.033.818.046.634.2
Percentage of Assets0.50.60.50.90.80.6
Percentage of Assets cop:ConocophillipsCompany srt:ReportableLegalEntities0.60.70.51.11.00.7

srt:NonGuarantorSubsidiaries, srt:ReportableLegalEntities



Period End2020-03-312019-12-312019-09-302019-06-302018-12-31
Value140315185882753552
Percentage of OtherLiabilitiesCurrent75.874.257.178.543.8
Percentage of Assets2.22.20.83.90.8
Percentage of Assets srt:NonGuarantorSubsidiaries srt:ReportableLegalEntities2.22.30.93.90.8

us-gaap:ConsolidationItems

srt:ConsolidationEliminations



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-31
Value000000-27-30
Percentage of OtherLiabilitiesCurrent0.00.00.00.00.00.0-2.3-2.9
Percentage of Assets0.00.00.00.00.00.0-0.0-0.0
Percentage of Assets srt:ConsolidationEliminations-0.0-0.0-0.0-0.0-0.0-0.00.00.0

Long Term Debt

us-gaap:LongTermDebt



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value15841181081813117770171671614716554165811890822435
Percentage of LongTermDebt100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets24.425.725.824.924.023.123.524.126.730.6

us-gaap:FairValueByMeasurementBasis

us-gaap:CarryingReportedAmountFairValueDisclosure



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-31
Value1416014175141791418314187141911420114204162601892926423
Percentage of LongTermDebt89.478.378.279.882.687.985.885.786.084.40.0
Percentage of Assets21.820.120.219.919.820.320.120.623.025.829.4
Percentage of Assets us-gaap:CarryingReportedAmountFairValueDisclosure0.00.00.00.00.00.00.00.00.00.00.0

Deferred Tax Liabilities Noncurrent

Pension And Other Postretirement Defined Benefit Plans Liabilities Noncurrent

us-gaap:PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312013-12-31
Value15631781178616891704176417551774183218541903249925342552247125332493228628642849297929642459
Percentage of PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets2.42.52.52.42.42.52.52.62.62.52.53.22.92.82.62.62.52.32.72.52.72.52.1

us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems

cop:ConocophillipsCompany, srt:ReportableLegalEntities



Period End2020-03-312019-12-312019-09-302019-06-302018-12-312018-09-30
Value118413291373126313401315
Percentage of PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent75.874.676.974.876.074.9
Percentage of Assets1.81.92.01.81.91.9
Percentage of Assets cop:ConocophillipsCompany srt:ReportableLegalEntities2.02.22.22.12.22.1

srt:NonGuarantorSubsidiaries, srt:ReportableLegalEntities



Period End2020-03-312019-12-312019-09-302019-06-302018-12-31
Value379452413426424
Percentage of PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent24.225.423.125.224.0
Percentage of Assets0.60.60.60.60.6
Percentage of Assets srt:NonGuarantorSubsidiaries srt:ReportableLegalEntities0.60.70.60.60.6

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
Value726993981221251291801721942122132482522862873183203453493563623873713994024244244374404714725095105205195495475565745805901100
Percentage of MinorityInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.10.10.10.10.20.20.20.30.20.30.30.30.30.30.30.30.30.30.30.30.30.30.30.30.30.30.40.40.40.40.40.40.30.30.30.30.30.30.40.40.40.40.8

us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems

srt:NonGuarantorSubsidiaries, srt:ReportableLegalEntities



Period End2020-03-312019-12-312019-09-302019-06-302018-12-31
Value72699398125
Percentage of MinorityInterest100.0100.0100.0100.0100.0
Percentage of Assets0.10.10.10.10.2
Percentage of Assets srt:NonGuarantorSubsidiaries srt:ReportableLegalEntities0.10.10.10.10.2

Other Liabilities Noncurrent

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
Value31315349813514632976328593193931950310423054630607305003028635353349743617037544390893976244210486204865251911552745531553222520905111348508488034798747406459716653465224658067005969972685626936165371628376246755165
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 Assets48.249.650.046.346.045.645.345.043.241.740.738.840.239.038.439.139.240.841.743.444.244.546.545.544.344.142.741.541.441.041.140.340.842.642.543.843.843.944.743.240.640.938.6

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
Value18181818181818181818181818181818181818181818181818181818181818181817171717171717171717
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 End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312008-12-31
Value37545397423948436769355343401032495309672966329391281302803331804315483189633248346323641440786427794386744504454514365342428411603952637899366623533834764337565128649194466814496442480403973915636917327493265830642
Percentage of RetainedEarningsAccumulatedDeficit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets57.756.456.151.649.748.646.144.941.940.137.635.936.235.133.834.634.737.438.538.239.938.238.235.935.334.933.032.431.130.230.129.631.532.130.228.126.625.825.224.421.221.421.4

us-gaap:ConsolidatedEntities

srt:ParentCompany



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-31
Value3098733184329263027129036275122597222867
Percentage of RetainedEarningsAccumulatedDeficit82.583.583.482.381.780.979.977.8
Percentage of Assets47.647.146.842.540.639.336.831.2
Percentage of Assets srt:ParentCompany98.097.493.194.390.691.883.077.7

us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems

cop:BurlingtonResourcesLLC, srt:ReportableLegalEntities



Period End2020-03-312019-12-312019-09-302019-06-302018-12-31
Value17132164246720851113
Percentage of RetainedEarningsAccumulatedDeficit4.65.46.25.73.3
Percentage of Assets2.63.13.52.91.6
Percentage of Assets cop:BurlingtonResourcesLLC srt:ReportableLegalEntities15.618.215.012.47.2

cop:ConocophillipsCompany, srt:ReportableLegalEntities



Period End2020-03-312019-12-312019-09-302019-06-302018-12-312018-09-30
Value202172189823494204401851117591
Percentage of RetainedEarningsAccumulatedDeficit53.855.159.555.654.454.1
Percentage of Assets31.131.133.428.726.524.9
Percentage of Assets cop:ConocophillipsCompany srt:ReportableLegalEntities35.036.436.934.330.328.6

srt:NonGuarantorSubsidiaries, srt:ReportableLegalEntities



Period End2020-03-312019-12-312019-09-302019-06-302018-12-31
Value10625104811187695739764
Percentage of RetainedEarningsAccumulatedDeficit28.326.430.126.028.7
Percentage of Assets16.314.916.913.414.0
Percentage of Assets srt:NonGuarantorSubsidiaries srt:ReportableLegalEntities16.816.117.313.513.5

us-gaap:ConsolidationItems

srt:ConsolidationEliminations



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-31
Value-25997-27985-31279-25600-26539-22890-27360-18070
Percentage of RetainedEarningsAccumulatedDeficit-69.2-70.4-79.2-69.6-74.7-67.3-84.2-61.5
Percentage of Assets-40.0-39.7-44.5-35.9-37.1-32.7-38.8-24.6
Percentage of Assets srt:ConsolidationEliminations26.427.827.523.624.021.027.120.1

Treasury Stock Value

us-gaap:TreasuryStockValue



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
Value47130464054565644906436564290541979410524040639906389513798137018369063678036780367803678036780367803678036780367803678036780367803678036780367803678036845366963367831787286712486221713200771746816601162111621116211
Percentage of TreasuryStockValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets72.565.864.963.061.161.359.559.657.154.452.048.742.141.139.038.336.837.734.732.833.431.630.930.230.631.230.731.531.231.431.932.220.720.718.515.513.612.811.211.010.510.611.3

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
Value-6145-5357-5654-5827-5914-6063-5442-5637-5371-5518-5292-6342-5961-6193-5444-5371-5146-6247-6125-3641-4589-19025852498180220022712184034784087433938773972308632036125554747734405188132753065-1875
Percentage of AccumulatedOtherComprehensiveIncomeLossNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets-9.4-7.6-8.0-8.2-8.3-8.7-7.7-8.2-7.6-7.5-7.1-8.1-6.8-6.9-5.8-5.6-5.2-6.4-5.8-3.3-4.2-1.60.52.11.51.72.31.63.03.53.83.42.42.02.13.83.53.12.81.22.12.0-1.3

Net Cash Provided By Used In Operating Activities

us-gaap:NetCashProvidedByUsedInOperatingActivities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-09-302009-06-302009-03-31
Value21052982233728912894378334103342239924811055175117901443128012594211596193421721870259741803622633639113705374147303870352023504182581256136274194761914339347530405094293325671885
Percentage of NetCashProvidedByUsedInOperatingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax34.238.730.136.431.639.136.139.327.330.615.825.823.821.919.622.68.423.625.825.123.421.932.424.639.528.023.926.532.325.323.315.526.039.033.635.53.4-8.39.27.66.811.97.37.26.1

us-gaap:ConsolidatedEntities

srt:ParentCompany



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value-85-29-851633-621986-862486-69232
Percentage of NetCashProvidedByUsedInOperatingActivities-4.0-1.0-3.656.5-2.152.5-2.574.4-2.99.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-1.4-0.4-1.120.5-0.720.5-0.929.2-0.82.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:ParentCompany0.00.00.00.00.00.00.00.00.00.0

us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems

cop:BurlingtonResourcesLLC, srt:ReportableLegalEntities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value253263-16-24-1620-1649
Percentage of NetCashProvidedByUsedInOperatingActivities1.2109.4-0.7-0.8-0.60.5-48.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.442.3-0.2-0.3-0.20.2-17.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax cop:BurlingtonResourcesLLC srt:ReportableLegalEntities0.00.00.00.00.00.00.0

cop:ConocophillipsCompany, srt:ReportableLegalEntities



Period End2020-03-312019-09-302019-06-302019-03-312018-09-30
Value-27712835242-117344
Percentage of NetCashProvidedByUsedInOperatingActivities-13.254.9181.3-4.010.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-4.516.565.9-1.33.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax cop:ConocophillipsCompany srt:ReportableLegalEntities-9.536.7150.3-2.97.9

srt:NonGuarantorSubsidiaries, srt:ReportableLegalEntities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value2401314118941320344853703080
Percentage of NetCashProvidedByUsedInOperatingActivities114.1105.381.045.7119.1142.090.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax39.040.724.416.637.755.632.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:NonGuarantorSubsidiaries srt:ReportableLegalEntities73.875.544.429.666.7100.860.2

us-gaap:ConsolidationItems

srt:ConsolidationEliminations



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value41-4971-739-5280-359-96032485-4181-1163-285
Percentage of NetCashProvidedByUsedInOperatingActivities1.9-166.7-31.6-182.6-12.4-253.872.9-125.1-48.5-11.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.7-64.5-9.5-66.4-3.9-99.326.3-49.2-13.2-3.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:ConsolidationEliminations0.00.00.00.00.00.00.00.00.00.0

Net Cash Provided By Used In Investing Activities

us-gaap:NetCashProvidedByUsedInInvestingActivities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-09-302009-06-302009-03-31
Value-1932-3830150-1461-1477-178-1638-1949-78-46920087197-97453275-2122-2065-626-2249-2664-3116-3357-3811-4265-36982315-2718-3415-2433-2929-2773-2915-30101124-3245-2683-2211-111941013840-2157-2506-1921-2582-2926
Percentage of NetCashProvidedByUsedInInvestingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-31.4-49.71.9-18.4-16.1-1.8-17.3-22.9-0.9-5.830.0106.1-13.00.84.2-38.1-41.2-9.3-30.0-30.8-38.9-28.3-29.5-29.0-23.016.6-17.6-24.1-16.6-19.2-18.4-19.2-18.77.5-19.4-15.2-3.91.58.78.4-4.8-5.8-4.8-7.3-9.5

us-gaap:ConsolidatedEntities

srt:ParentCompany



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value122512101142-811163-7281235-16088871013
Percentage of NetCashProvidedByUsedInInvestingActivities-63.4-31.6761.35.5-78.7409.0-75.482.5-1137.2-216.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax19.915.714.7-1.012.7-7.513.1-18.910.112.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:ParentCompany0.00.00.00.00.00.00.00.00.00.0

us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems

cop:BurlingtonResourcesLLC, srt:ReportableLegalEntities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value-2513527792416-211648
Percentage of NetCashProvidedByUsedInInvestingActivities1.3-35.3519.3-1.6-1.111.8-100.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.417.510.00.30.2-0.217.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax cop:BurlingtonResourcesLLC srt:ReportableLegalEntities0.00.00.00.00.00.00.0

cop:ConocophillipsCompany, srt:ReportableLegalEntities



Period End2020-03-312019-09-302019-06-302019-03-312018-09-30
Value-1260920-366557-381
Percentage of NetCashProvidedByUsedInInvestingActivities65.2613.3250.9-3.923.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-20.511.9-46.10.6-4.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax cop:ConocophillipsCompany srt:ReportableLegalEntities-43.426.3-105.11.4-8.8

srt:NonGuarantorSubsidiaries, srt:ReportableLegalEntities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value-1825-544-32362092-2643556-1352
Percentage of NetCashProvidedByUsedInInvestingActivities94.514.2-2157.3-143.2178.9-312.482.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-29.6-7.1-41.726.3-28.95.8-14.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:NonGuarantorSubsidiaries srt:ReportableLegalEntities-56.1-13.1-75.946.8-51.110.4-26.4

us-gaap:ConsolidationItems

srt:ConsolidationEliminations



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value-47-6631545169-70-65-874-1232-1278-12287
Percentage of NetCashProvidedByUsedInInvestingActivities2.4173.1363.3-11.64.736.553.463.21638.52619.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.8-86.07.02.1-0.8-0.7-9.2-14.5-14.5-151.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:ConsolidationEliminations0.00.00.00.00.00.00.00.00.00.0

Net Cash Provided By Used In Financing Activities

us-gaap:NetCashProvidedByUsedInFinancingActivities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-09-302009-06-302009-03-31
Value-1230-1270-1132-1654-1173-1317-1263-3003-3776-2586-3827-4599-1344-1906-347-11204137-975-9901555-1019542-973-789-1354-3873-1085-1845-3301402-532-2081-3270-4687-4322-4235-3061-3492-4687-4066-574-2687-1268891011
Percentage of NetCashProvidedByUsedInFinancingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-20.0-16.5-14.6-20.8-12.8-13.6-13.4-35.3-42.9-31.9-57.2-67.8-17.9-28.9-5.3-20.182.5-14.4-13.218.0-12.74.6-7.5-5.4-8.4-27.7-7.0-13.0-2.39.2-3.5-13.7-20.3-31.5-25.9-24.0-5.44.7-9.9-8.9-1.3-6.3-3.20.33.3

us-gaap:ConsolidatedEntities

srt:ParentCompany



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value-1140-1181-1057-1552-1101-1258-1149-878-818-1245
Percentage of NetCashProvidedByUsedInFinancingActivities92.793.093.493.893.995.591.029.221.748.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-18.5-15.3-13.6-19.5-12.0-13.0-12.2-10.3-9.3-15.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:ParentCompany0.00.00.00.00.00.00.00.00.00.0

us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems

cop:BurlingtonResourcesLLC, srt:ReportableLegalEntities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value0-4615-7630000
Percentage of NetCashProvidedByUsedInFinancingActivities-0.0363.467.4-0.0-0.0-0.0-0.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.0-59.9-9.80.00.00.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax cop:BurlingtonResourcesLLC srt:ReportableLegalEntities0.00.00.00.00.00.00.0

cop:ConocophillipsCompany, srt:ReportableLegalEntities



Period End2020-03-312019-09-302019-06-302019-03-312018-09-30
Value00-1661-200
Percentage of NetCashProvidedByUsedInFinancingActivities-0.0-0.0100.41.7-0.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.00.0-20.9-0.20.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax cop:ConocophillipsCompany srt:ReportableLegalEntities0.00.0-47.6-0.50.0

srt:NonGuarantorSubsidiaries, srt:ReportableLegalEntities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value-96-4702494-3552-481-5049-1181
Percentage of NetCashProvidedByUsedInFinancingActivities7.8370.2-43.6214.841.0383.493.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-1.6-61.06.4-44.7-5.3-52.2-12.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:NonGuarantorSubsidiaries srt:ReportableLegalEntities-2.9-113.111.6-79.5-9.3-94.8-23.1

us-gaap:ConsolidationItems

srt:ConsolidationEliminations



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value61160219451114299668-16115413244112572
Percentage of NetCashProvidedByUsedInFinancingActivities-0.5-913.5-17.1-309.0-36.6-734.1127.6-180.3-64.6-486.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.1150.52.564.34.7100.0-17.063.727.7154.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:ConsolidationEliminations0.00.00.00.00.00.00.00.00.00.0

Net Cash Provided By Used In Operating Activities

us-gaap:NetCashProvidedByUsedInOperatingActivities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-09-302009-06-302009-03-31
Value21052982233728912894378334103342239924811055175117901443128012594211596193421721870259741803622633639113705374147303870352023504182581256136274194761914339347530405094293325671885
Percentage of NetCashProvidedByUsedInOperatingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax34.238.730.136.431.639.136.139.327.330.615.825.823.821.919.622.68.423.625.825.123.421.932.424.639.528.023.926.532.325.323.315.526.039.033.635.53.4-8.39.27.66.811.97.37.26.1

us-gaap:ConsolidatedEntities

srt:ParentCompany



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value-85-29-851633-621986-862486-69232
Percentage of NetCashProvidedByUsedInOperatingActivities-4.0-1.0-3.656.5-2.152.5-2.574.4-2.99.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-1.4-0.4-1.120.5-0.720.5-0.929.2-0.82.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:ParentCompany0.00.00.00.00.00.00.00.00.00.0

us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems

cop:BurlingtonResourcesLLC, srt:ReportableLegalEntities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value253263-16-24-1620-1649
Percentage of NetCashProvidedByUsedInOperatingActivities1.2109.4-0.7-0.8-0.60.5-48.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.442.3-0.2-0.3-0.20.2-17.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax cop:BurlingtonResourcesLLC srt:ReportableLegalEntities0.00.00.00.00.00.00.0

cop:ConocophillipsCompany, srt:ReportableLegalEntities



Period End2020-03-312019-09-302019-06-302019-03-312018-09-30
Value-27712835242-117344
Percentage of NetCashProvidedByUsedInOperatingActivities-13.254.9181.3-4.010.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-4.516.565.9-1.33.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax cop:ConocophillipsCompany srt:ReportableLegalEntities-9.536.7150.3-2.97.9

srt:NonGuarantorSubsidiaries, srt:ReportableLegalEntities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value2401314118941320344853703080
Percentage of NetCashProvidedByUsedInOperatingActivities114.1105.381.045.7119.1142.090.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax39.040.724.416.637.755.632.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:NonGuarantorSubsidiaries srt:ReportableLegalEntities73.875.544.429.666.7100.860.2

us-gaap:ConsolidationItems

srt:ConsolidationEliminations



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value41-4971-739-5280-359-96032485-4181-1163-285
Percentage of NetCashProvidedByUsedInOperatingActivities1.9-166.7-31.6-182.6-12.4-253.872.9-125.1-48.5-11.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.7-64.5-9.5-66.4-3.9-99.326.3-49.2-13.2-3.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:ConsolidationEliminations0.00.00.00.00.00.00.00.00.00.0

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
Value-17397203056158018331868186116408881579420-3440586-35-1040-1071-1469-3450-1071-179272-39270420812123248724802050213914261798226729373390261634023028204130554164209817291470859800
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 RevenueFromContractWithCustomerExcludingAssessedTax-28.29.339.419.920.019.319.719.310.119.46.3-50.77.8-0.5-16.0-19.2-29.3-51.0-14.3-2.13.4-0.320.914.213.217.816.014.514.69.311.914.918.322.715.719.35.4-2.76.59.14.74.03.72.42.6

us-gaap:ConsolidatedEntities

srt:ParentCompany



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value-17397203056158018331868186116408881579420
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-28.29.339.419.920.019.319.719.310.119.46.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:ParentCompany0.00.00.00.00.00.00.00.00.00.00.0

us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems

cop:BurlingtonResourcesLLC, srt:ReportableLegalEntities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value-450151444515457535534493
Percentage of NetIncomeLoss25.921.014.532.624.928.628.730.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-7.32.05.76.55.05.55.75.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax cop:BurlingtonResourcesLLC srt:ReportableLegalEntities0.00.00.00.00.00.00.00.0

cop:ConocophillipsCompany, srt:ReportableLegalEntities



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-30
Value-168131141637189019031705
Percentage of NetIncomeLoss96.7101.9103.6103.1102.3104.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-27.340.120.620.720.120.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax cop:ConocophillipsCompany srt:ReportableLegalEntities-57.989.146.947.543.946.3

srt:NonGuarantorSubsidiaries, srt:ReportableLegalEntities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value14383574321061636280121131784
Percentage of NetIncomeLoss-8.2116.024.3133.389.3149.9113.5108.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax2.310.89.626.517.929.022.421.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:NonGuarantorSubsidiaries srt:ReportableLegalEntities4.420.117.447.231.752.641.337.0

us-gaap:ConsolidationItems

srt:ConsolidationEliminations



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value1988-1764-4301-4258-3983-6570-4031-3982-2787-5487-757
Percentage of NetIncomeLoss-114.3-245.0-140.7-269.5-217.3-351.7-216.6-242.8-313.9-347.5-180.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax32.3-22.9-55.5-53.5-43.5-68.0-42.7-46.8-31.7-67.6-11.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:ConsolidationEliminations0.00.00.00.00.00.00.00.00.00.00.0

us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:CorporateNonSegment, us-gaap:CorporateAndOther



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-31
Value-1775-14-193271-24728-541-327-424-348
Percentage of NetIncomeLoss102.1-0.5-12.214.8-13.31.7-60.9-77.912.3-59.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-28.8-0.2-2.43.0-2.60.3-6.1-4.9-6.3-4.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:CorporateNonSegment us-gaap:CorporateAndOther-13653.8-19.4-4825.0193.6-316.735.0-13525.0-760.5-2650.0-994.3

us-gaap:OperatingSegments, cop:AlaskaSegment



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-06-302017-03-31
Value813143064623844454274185241175199-11
Percentage of NetIncomeLoss-4.743.610.029.220.923.822.925.559.074.4-5.8-1.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.34.13.95.84.24.64.54.96.014.52.9-0.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments cop:AlaskaSegment7.323.223.632.427.330.528.629.837.896.818.6-1.1

us-gaap:OperatingSegments, cop:AsiaPacificAndMiddleEast



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-06-302017-03-31
Value398613517525577466461-2172236
Percentage of NetIncomeLoss-22.920.132.728.631.028.451.963.140.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax6.57.96.55.76.15.55.2-32.03.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments cop:AsiaPacificAndMiddleEast39.756.550.239.142.846.337.9-242.423.1

us-gaap:OperatingSegments, cop:LowerFortyEight



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-06-302017-03-31
Value-43726206193513410308-2536-362
Percentage of NetIncomeLoss25.10.913.010.527.625.034.773.7-61.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-7.10.32.62.15.44.83.5-37.4-4.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments cop:LowerFortyEight-14.10.75.44.711.310.67.8-82.1-11.2

us-gaap:OperatingSegments, cop:OtherInternational



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-06-302017-03-31
Value287381131316-5-44-9-48
Percentage of NetIncomeLoss-1.62.45.17.117.0-0.3-5.00.3-8.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.50.91.01.43.3-0.1-0.5-0.1-0.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments cop:OtherInternational0.00.00.00.00.00.00.00.00.0

us-gaap:OperatingSegments, country:CA



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-31
Value-109511001223433-652801379948
Percentage of NetIncomeLoss6.31.76.36.71.82.0-7.366.7-40.1161.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-1.80.71.31.30.40.4-0.74.220.312.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments country:CA-32.714.226.221.38.06.3-10.251.5197.3120.9

us-gaap:OperatingSegments, srt:Europe



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-30
Value75200140720724129024585
Percentage of NetIncomeLoss-4.365.525.811.313.017.727.620.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.225.85.12.32.63.42.81.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments srt:Europe12.5163.331.013.415.317.615.27.7

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
Value-17117433071159718461878187316549001598436-3426599-19-1026-1058-1456-3437-1056-164286-24272720982137250324962063215314411813228929553410263134193042205330694183211217581487875816
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 RevenueFromContractWithCustomerExcludingAssessedTax-27.89.639.620.120.219.419.819.410.219.76.5-50.58.0-0.3-15.7-19.0-29.0-50.8-14.1-1.93.6-0.221.114.313.317.916.114.614.79.412.015.118.422.915.819.45.4-2.86.59.24.74.13.72.52.7

us-gaap:ConsolidatedEntities

srt:ParentCompany



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value-17397203056158018331868186116408881579420
Percentage of ProfitLoss101.696.999.598.999.399.599.499.298.798.896.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-28.29.339.419.920.019.319.719.310.119.46.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:ParentCompany0.00.00.00.00.00.00.00.00.00.00.0

us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems

cop:BurlingtonResourcesLLC, srt:ReportableLegalEntities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value-450151444515457535534493
Percentage of ProfitLoss26.320.314.532.224.828.528.529.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-7.32.05.76.55.05.55.75.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax cop:BurlingtonResourcesLLC srt:ReportableLegalEntities0.00.00.00.00.00.00.00.0

cop:ConocophillipsCompany, srt:ReportableLegalEntities



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-30
Value-168131141637189019031705
Percentage of ProfitLoss98.2101.4102.5102.4101.6103.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-27.340.120.620.720.120.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax cop:ConocophillipsCompany srt:ReportableLegalEntities-57.989.146.947.543.946.3

srt:NonGuarantorSubsidiaries, srt:ReportableLegalEntities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value17185875821231649281121251798
Percentage of ProfitLoss-10.0115.524.7132.989.3149.7113.5108.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax2.811.19.826.718.029.122.521.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:NonGuarantorSubsidiaries srt:ReportableLegalEntities5.320.617.847.531.952.841.537.3

us-gaap:ConsolidationItems

srt:ConsolidationEliminations



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value1988-1764-4301-4258-3983-6570-4031-3982-2787-5487-757
Percentage of ProfitLoss-116.2-237.4-140.1-266.6-215.8-349.8-215.2-240.7-309.7-343.4-173.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax32.3-22.9-55.5-53.5-43.5-68.0-42.7-46.8-31.7-67.6-11.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:ConsolidationEliminations0.00.00.00.00.00.00.00.00.00.00.0

us-gaap:StatementEquityComponents

us-gaap:NoncontrollingInterest



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-09-30
Value28231517131012141219161413161413131315151415231714161613141515221820151714121419142917
Percentage of ProfitLoss-1.63.10.51.10.70.50.60.81.31.23.7-0.42.2-84.2-1.4-1.2-0.9-0.4-1.4-9.14.9-62.50.80.80.70.60.60.60.71.00.81.00.60.60.60.50.50.60.50.50.71.61.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.50.30.20.20.10.10.10.20.10.20.20.20.20.20.20.20.30.20.20.20.20.10.20.10.10.10.10.10.10.10.10.10.10.10.10.10.0-0.00.00.00.00.10.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:NoncontrollingInterest0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:RetainedEarnings



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312012-12-312012-09-30
Value-173972030561580183318681861164088814261798
Percentage of ProfitLoss101.696.999.598.999.399.599.499.298.799.099.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-28.29.339.419.920.019.319.719.310.19.311.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.00.00.0

Depreciation Depletion And Amortization

us-gaap:DepreciationDepletionAndAmortization



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
Value141114881566149015461612149414381412163316081625197920612425232922472382227123292131227120962070189218931902183218071632169916261838191918702075207022162246228023182391232723472230
Percentage of DepreciationDepletionAndAmortization100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems

cop:ConocophillipsCompany, srt:ReportableLegalEntities



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-30
Value147159148136152143
Percentage of DepreciationDepletionAndAmortization10.410.29.98.810.29.9

srt:NonGuarantorSubsidiaries, srt:ReportableLegalEntities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value12641335140713421410145513421295
Percentage of DepreciationDepletionAndAmortization89.689.789.890.191.290.389.890.1

Increase Decrease In Other Operating Capital Net

us-gaap:IncreaseDecreaseInOtherOperatingCapitalNet



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
Value445-4222434514925-359-12134-385-1624-79-90-46-374-416-83138-15-630-623-66-472595
Percentage of IncreaseDecreaseInOtherOperatingCapitalNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Increase Decrease In Inventories

us-gaap:IncreaseDecreaseInInventories



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-09-302009-06-302009-03-31
Value-27765-75734-25114433-124012-7376-22-4584-61-7-11735-7731597627-231222177-20728-14331402-2535298-9882669-25354974840-2439-706532427-1454
Percentage of IncreaseDecreaseInInventories100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Net Cash Provided By Used In Investing Activities

us-gaap:NetCashProvidedByUsedInInvestingActivities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-09-302009-06-302009-03-31
Value-1932-3830150-1461-1477-178-1638-1949-78-46920087197-97453275-2122-2065-626-2249-2664-3116-3357-3811-4265-36982315-2718-3415-2433-2929-2773-2915-30101124-3245-2683-2211-111941013840-2157-2506-1921-2582-2926
Percentage of NetCashProvidedByUsedInInvestingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-31.4-49.71.9-18.4-16.1-1.8-17.3-22.9-0.9-5.830.0106.1-13.00.84.2-38.1-41.2-9.3-30.0-30.8-38.9-28.3-29.5-29.0-23.016.6-17.6-24.1-16.6-19.2-18.4-19.2-18.77.5-19.4-15.2-3.91.58.78.4-4.8-5.8-4.8-7.3-9.5

us-gaap:ConsolidatedEntities

srt:ParentCompany



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value122512101142-811163-7281235-16088871013
Percentage of NetCashProvidedByUsedInInvestingActivities-63.4-31.6761.35.5-78.7409.0-75.482.5-1137.2-216.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax19.915.714.7-1.012.7-7.513.1-18.910.112.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:ParentCompany0.00.00.00.00.00.00.00.00.00.0

us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems

cop:BurlingtonResourcesLLC, srt:ReportableLegalEntities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value-2513527792416-211648
Percentage of NetCashProvidedByUsedInInvestingActivities1.3-35.3519.3-1.6-1.111.8-100.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.417.510.00.30.2-0.217.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax cop:BurlingtonResourcesLLC srt:ReportableLegalEntities0.00.00.00.00.00.00.0

cop:ConocophillipsCompany, srt:ReportableLegalEntities



Period End2020-03-312019-09-302019-06-302019-03-312018-09-30
Value-1260920-366557-381
Percentage of NetCashProvidedByUsedInInvestingActivities65.2613.3250.9-3.923.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-20.511.9-46.10.6-4.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax cop:ConocophillipsCompany srt:ReportableLegalEntities-43.426.3-105.11.4-8.8

srt:NonGuarantorSubsidiaries, srt:ReportableLegalEntities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value-1825-544-32362092-2643556-1352
Percentage of NetCashProvidedByUsedInInvestingActivities94.514.2-2157.3-143.2178.9-312.482.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-29.6-7.1-41.726.3-28.95.8-14.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:NonGuarantorSubsidiaries srt:ReportableLegalEntities-56.1-13.1-75.946.8-51.110.4-26.4

us-gaap:ConsolidationItems

srt:ConsolidationEliminations



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value-47-6631545169-70-65-874-1232-1278-12287
Percentage of NetCashProvidedByUsedInInvestingActivities2.4173.1363.3-11.64.736.553.463.21638.52619.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.8-86.07.02.1-0.8-0.7-9.2-14.5-14.5-151.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:ConsolidationEliminations0.00.00.00.00.00.00.00.00.00.0

Net Cash Provided By Used In Financing Activities

us-gaap:NetCashProvidedByUsedInFinancingActivities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-09-302009-06-302009-03-31
Value-1230-1270-1132-1654-1173-1317-1263-3003-3776-2586-3827-4599-1344-1906-347-11204137-975-9901555-1019542-973-789-1354-3873-1085-1845-3301402-532-2081-3270-4687-4322-4235-3061-3492-4687-4066-574-2687-1268891011
Percentage of NetCashProvidedByUsedInFinancingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-20.0-16.5-14.6-20.8-12.8-13.6-13.4-35.3-42.9-31.9-57.2-67.8-17.9-28.9-5.3-20.182.5-14.4-13.218.0-12.74.6-7.5-5.4-8.4-27.7-7.0-13.0-2.39.2-3.5-13.7-20.3-31.5-25.9-24.0-5.44.7-9.9-8.9-1.3-6.3-3.20.33.3

us-gaap:ConsolidatedEntities

srt:ParentCompany



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value-1140-1181-1057-1552-1101-1258-1149-878-818-1245
Percentage of NetCashProvidedByUsedInFinancingActivities92.793.093.493.893.995.591.029.221.748.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-18.5-15.3-13.6-19.5-12.0-13.0-12.2-10.3-9.3-15.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:ParentCompany0.00.00.00.00.00.00.00.00.00.0

us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems

cop:BurlingtonResourcesLLC, srt:ReportableLegalEntities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value0-4615-7630000
Percentage of NetCashProvidedByUsedInFinancingActivities-0.0363.467.4-0.0-0.0-0.0-0.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.0-59.9-9.80.00.00.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax cop:BurlingtonResourcesLLC srt:ReportableLegalEntities0.00.00.00.00.00.00.0

cop:ConocophillipsCompany, srt:ReportableLegalEntities



Period End2020-03-312019-09-302019-06-302019-03-312018-09-30
Value00-1661-200
Percentage of NetCashProvidedByUsedInFinancingActivities-0.0-0.0100.41.7-0.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.00.0-20.9-0.20.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax cop:ConocophillipsCompany srt:ReportableLegalEntities0.00.0-47.6-0.50.0

srt:NonGuarantorSubsidiaries, srt:ReportableLegalEntities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value-96-4702494-3552-481-5049-1181
Percentage of NetCashProvidedByUsedInFinancingActivities7.8370.2-43.6214.841.0383.493.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-1.6-61.06.4-44.7-5.3-52.2-12.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:NonGuarantorSubsidiaries srt:ReportableLegalEntities-2.9-113.111.6-79.5-9.3-94.8-23.1

us-gaap:ConsolidationItems

srt:ConsolidationEliminations



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value61160219451114299668-16115413244112572
Percentage of NetCashProvidedByUsedInFinancingActivities-0.5-913.5-17.1-309.0-36.6-734.1127.6-180.3-64.6-486.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.1150.52.564.34.7100.0-17.063.727.7154.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:ConsolidationEliminations0.00.00.00.00.00.00.00.00.00.0

Repayments Of Long Term Debt

Payments For Repurchase Of Common Stock

us-gaap:PaymentsForRepurchaseOfCommonStock



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value7267497491250752926927646500955970963112126001493050189931393199314916362608868
Percentage of PaymentsForRepurchaseOfCommonStock100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ConsolidatedEntities

srt:ParentCompany



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value7267497491250752926927646500955
Percentage of PaymentsForRepurchaseOfCommonStock100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Repayments Of Long Term Debt

Debt Instrument Interest Rate Stated Percentage

Effective Income Tax Rate Continuing Operations

us-gaap:EffectiveIncomeTaxRateContinuingOperations



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-09-302009-06-30
Value-0.0950.0279999999999999970.120.220.31-0.0260000000000000230.3550.3680.4930.303999999999999940.3320.2143.58-0.00400000000000000360.380.360.35-0.173999999999999930.39-0.81.8-0.0190000000000000170.350.40.43-0.0060000000000000050.450.440.47-0.0150000000000000130.520.570.46-0.0139999999999999570.490.450.480.031999999999999970.420.320.47-0.0090000000000000080.490.55
Percentage of EffectiveIncomeTaxRateContinuingOperations100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

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

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 End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312015-12-31
Value418353627458619764706151394034575206653669117534310936102368
Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems

cop:BurlingtonResourcesLLC, srt:ReportableLegalEntities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-312016-12-31
Value0000001235
Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents0.00.00.00.00.00.00.00.10.00.1

cop:ConocophillipsCompany, srt:ReportableLegalEntities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-312017-09-302016-12-31
Value1906344334551263134814281653234226358
Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents45.664.246.320.420.823.20.41.53.63.39.9

srt:NonGuarantorSubsidiaries, srt:ReportableLegalEntities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-312016-12-31
Value2277191940034934512247233923340262993247
Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents54.435.853.779.679.276.899.698.496.489.9

Proceeds From Sale Of Short Term Investments

us-gaap:ProceedsFromSaleOfShortTermInvestments



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value2606909732248249872613289179924112117259402271168307000003622832112730752188-218850558912163-79872037931
Percentage of ProceedsFromSaleOfShortTermInvestments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.00.00.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Proceeds From Sale Of Longterm Investments

us-gaap:ProceedsFromSaleOfLongtermInvestments



Period End2020-03-312019-03-31
Value250
Percentage of ProceedsFromSaleOfLongtermInvestments100.00.0

cop:ExplorationAbandonmentAndImpairmentCashPayments



Period End2020-03-312019-03-31
Value6727
Percentage of ExplorationAbandonmentAndImpairmentCashPayments100.0100.0

cop:IncreaseDecreaseInCapitalAccrual



Period End2020-03-312019-09-302019-06-302019-03-312018-09-30
Value81-7-8310735
Percentage of IncreaseDecreaseInCapitalAccrual100.0100.0100.0100.0100.0

us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems

cop:ConocophillipsCompany, srt:ReportableLegalEntities



Period End2020-03-312019-09-302019-06-302019-03-312018-09-30
Value-935231839
Percentage of IncreaseDecreaseInCapitalAccrual-11.1-500.0-27.716.8111.4

srt:NonGuarantorSubsidiaries, srt:ReportableLegalEntities



Period End2020-03-312019-09-302019-06-302019-03-312018-09-30
Value90-42-10689-4
Percentage of IncreaseDecreaseInCapitalAccrual111.1600.0127.783.2-11.4

us-gaap:ConsolidatedEntities

cop:IntercompanyCashManagement

srt:ParentCompany



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value1225-11641142-811163-13171235-1608887-1752
Percentage of IntercompanyCashManagement100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems

cop:BurlingtonResourcesLLC, srt:ReportableLegalEntities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value-111346162416414-236
Percentage of IntercompanyCashManagement-0.9-115.61.4-29.61.4-31.4-19.1

cop:ConocophillipsCompany, srt:ReportableLegalEntities



Period End2020-03-312019-09-302019-06-302019-03-312018-09-30
Value-481286-3461205-1091
Percentage of IntercompanyCashManagement-3.9112.64272.817.6-88.3

srt:NonGuarantorSubsidiaries, srt:ReportableLegalEntities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value-1166697-24443518-138482592
Percentage of IntercompanyCashManagement-95.2-59.9-214.0-4343.2-119.0-62.67.4

cop:OperatingExpensesIncludingNonoperatingIncomeExpenseAndInterestAndDebtExpense



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value63746854660063227370768972596621718574116542132438003
Percentage of OperatingExpensesIncludingNonoperatingIncomeExpenseAndInterestAndDebtExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ConsolidatedEntities

srt:ParentCompany



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value727473737310162939387111
Percentage of OperatingExpensesIncludingNonoperatingIncomeExpenseAndInterestAndDebtExpense1.11.11.11.21.01.30.91.41.31.21.7

us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems

cop:BurlingtonResourcesLLC, srt:ReportableLegalEntities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value343334333489-3272
Percentage of OperatingExpensesIncludingNonoperatingIncomeExpenseAndInterestAndDebtExpense0.50.50.50.50.51.2-0.41.1

cop:ConocophillipsCompany, srt:ReportableLegalEntities



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-30
Value307540644275420646734117
Percentage of OperatingExpensesIncludingNonoperatingIncomeExpenseAndInterestAndDebtExpense48.261.667.657.164.462.2

srt:NonGuarantorSubsidiaries, srt:ReportableLegalEntities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value41334011379637564257426142113786
Percentage of OperatingExpensesIncludingNonoperatingIncomeExpenseAndInterestAndDebtExpense64.858.557.559.457.855.458.057.2

us-gaap:ConsolidationItems

srt:ConsolidationEliminations



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value-940-1313-1367-1815-1200-1359-1704-1447-1266-974-904
Percentage of OperatingExpensesIncludingNonoperatingIncomeExpenseAndInterestAndDebtExpense-14.7-19.2-20.7-28.7-16.3-17.7-23.5-21.9-17.6-13.1-13.8

cop:ProceedsFromCommonStockIssuance



Period End2020-03-312019-03-312018-03-31
Value2-38-18
Percentage of ProceedsFromCommonStockIssuance100.0100.0100.0

us-gaap:ConsolidatedEntities

srt:ParentCompany



Period End2020-03-312019-03-312018-03-31
Value43-119
Percentage of ProceedsFromCommonStockIssuance2150.02.6-105.6

us-gaap:ConsolidationItems

srt:ConsolidationEliminations



Period End2020-03-312019-03-312018-03-31
Value-41-37-37
Percentage of ProceedsFromCommonStockIssuance-2050.097.4205.6

cop:RelatedPartyTransactionsRelatedPartyRevenue



Period End2020-03-312019-03-312018-09-302018-06-302018-03-312017-09-302017-06-30
Value17212724232430
Percentage of RelatedPartyTransactionsRelatedPartyRevenue100.0100.0100.0100.0100.0100.0100.0

us-gaap:FinancialInstrument, dei:LegalEntity

cop:SharesExchangeForAssetsHeldForSale

cop:CenovusEnergy, dei:EntityDomain



Period End2020-03-31
Value208
Percentage of SharesExchangeForAssetsHeldForSale100.0

us-gaap:Range, us-gaap:StatementGeographical, us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency, us-gaap:FinancialInstrument, us-gaap:MeasurementInputType

srt:AverageSalesPrices

srt:ArithmeticAverage, cop:LowerFortyEight, us-gaap:FairValueInputsLevel3, us-gaap:FairValueMeasurementsNonrecurring, cop:WindRiverBasin, us-gaap:MeasurementInputCommodityFuturePrice



Period End2020-03-31
Value5.68
Percentage of AverageSalesPrices100.0

srt:Maximum, cop:LowerFortyEight, us-gaap:FairValueInputsLevel3, us-gaap:FairValueMeasurementsNonrecurring, cop:WindRiverBasin, us-gaap:MeasurementInputCommodityFuturePrice



Period End2020-03-31
Value9.17
Percentage of AverageSalesPrices161.4

srt:Minimum, cop:LowerFortyEight, us-gaap:FairValueInputsLevel3, us-gaap:FairValueMeasurementsNonrecurring, cop:WindRiverBasin, us-gaap:MeasurementInputCommodityFuturePrice



Period End2020-03-31
Value2.67
Percentage of AverageSalesPrices47.0

us-gaap:StatementGeographical, us-gaap:StatementScenario, us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency, us-gaap:FinancialInstrument, us-gaap:MeasurementInputType

cop:LowerFortyEight, srt:ScenarioForecast, us-gaap:FairValueInputsLevel3, us-gaap:FairValueMeasurementsNonrecurring, cop:WindRiverBasin, us-gaap:MeasurementInputCommodityFuturePrice



Period End2035-01-01
Value2.2
Percentage of AverageSalesPrices0.0

us-gaap:AccretionExpenseIncludingAssetRetirementObligations



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-30
Value676786878687898988868992959610811210911812212212112712012011711710610510680102105105103107107
Percentage of AccretionExpenseIncludingAssetRetirementObligations100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems

cop:ConocophillipsCompany, srt:ReportableLegalEntities



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-30
Value444445
Percentage of AccretionExpenseIncludingAssetRetirementObligations6.04.74.64.74.55.6

srt:NonGuarantorSubsidiaries, srt:ReportableLegalEntities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value6363828382838584
Percentage of AccretionExpenseIncludingAssetRetirementObligations94.094.095.395.495.395.495.594.4

us-gaap:AssetImpairmentCharges



Period End2020-03-312019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-312010-09-302010-06-302010-03-312009-12-312009-09-302009-06-302009-03-31
Value52111644-351212666294175-18212362136212724781673010817149812823840822593044862985915329142556513
Percentage of AssetImpairmentCharges100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value-1179-20961261-2733192211483-1749-1330-586-6234425-501
Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems

cop:BurlingtonResourcesLLC, srt:ReportableLegalEntities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value0.00.00.00.00.0-1000000.0-1000000.0
Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect-0.0-0.00.0-0.00.0-0.0-0.2

cop:ConocophillipsCompany, srt:ReportableLegalEntities



Period End2020-03-312019-09-302019-06-302019-03-312018-09-30
Value-15372192-85-80-37
Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect130.4173.831.1-25.1-7.7

srt:NonGuarantorSubsidiaries, srt:ReportableLegalEntities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value358-2084-931-188399800521
Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect-30.499.4-73.868.9125.136.2107.9

us-gaap:CommonStockDividendsPerShareCashPaid



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
Value0.420.420000000000000040.310.310.310.299999999999999930.290.290.2850.260.270.270.270.250.250.250.250.73999999999999980.740.730.730.730.730.690.690.69000000000000040.690.660.660.66000000000000010.660.660.660.66000000000000010.660.660.660.54999999999999980.550.550.50.50.470.470.47
Percentage of CommonStockDividendsPerShareCashPaid100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredIncomeTaxExpenseBenefit



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
Value-227-140-83-220-1-11513619765-911-222-1234-1314-69-695-630-827-1488-68235-637-3153914032301694584432415194311892584782934298757-392-508-35-237-269-382-221
Percentage of DeferredIncomeTaxExpenseBenefit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanAmortizationOfGainsLosses

country:US, us-gaap:PensionPlansDefinedBenefit



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value-12-15-13-13-13-12-10-16
Percentage of DefinedBenefitPlanAmortizationOfGainsLosses100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ForeignPlan, us-gaap:PensionPlansDefinedBenefit



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-06-302017-03-31
Value-6-9-7-8-8-4-9-9-9-12-12
Percentage of DefinedBenefitPlanAmortizationOfGainsLosses50.060.053.861.561.533.390.056.20.00.00.0

us-gaap:RetirementPlanType

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value0.00.01000000.00.01000000.00.00.01000000.00.01000000.01000000.00.01000000.0
Percentage of DefinedBenefitPlanAmortizationOfGainsLosses-0.0-0.0-7.7-0.0-7.7-0.0-0.0-6.20.00.00.00.00.0

us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanAmortizationOfPriorServiceCostCredit

us-gaap:ForeignPlan, us-gaap:PensionPlansDefinedBenefit



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-06-302017-03-31
Value0-10-10-1-1-2-1-2-1
Percentage of DefinedBenefitPlanAmortizationOfPriorServiceCostCredit0.0100.00.0100.00.0100.0100.0100.0100.0100.0100.0

us-gaap:RetirementPlanType

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value-8-9-7-9-8-9-9-8-9-9-9-9-9
Percentage of DefinedBenefitPlanAmortizationOfPriorServiceCostCredit0.0900.00.0900.00.0900.0900.0400.0900.00.00.0450.0900.0

us-gaap:RetirementPlanSponsorLocation

us-gaap:DefinedBenefitPlanContributionsByEmployer

country:US



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value126663452011812
Percentage of DefinedBenefitPlanContributionsByEmployer100.0100.0100.0100.0100.0100.0100.0

us-gaap:ForeignPlan



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value373522156452263
Percentage of DefinedBenefitPlanContributionsByEmployer308.3533.333.3124.4225.018.6525.0

us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanExpectedReturnOnPlanAssets

country:US, us-gaap:PensionPlansDefinedBenefit



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value2120181818232235
Percentage of DefinedBenefitPlanExpectedReturnOnPlanAssets100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ForeignPlan, us-gaap:PensionPlansDefinedBenefit



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-06-302017-03-31
Value3734343535373840403939
Percentage of DefinedBenefitPlanExpectedReturnOnPlanAssets176.2170.0188.9194.4194.4160.9172.7114.30.00.00.0

us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanInterestCost

country:US, us-gaap:PensionPlansDefinedBenefit



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value1716212121232227
Percentage of DefinedBenefitPlanInterestCost100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ForeignPlan, us-gaap:PensionPlansDefinedBenefit



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-06-302017-03-31
Value2220252626272627272526
Percentage of DefinedBenefitPlanInterestCost129.4125.0119.0123.8123.8117.4118.2100.00.00.00.0

us-gaap:RetirementPlanType

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value2213222222322
Percentage of DefinedBenefitPlanInterestCost11.812.54.814.39.58.79.17.40.00.00.00.00.0

us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanNetPeriodicBenefitCost

country:US, us-gaap:PensionPlansDefinedBenefit



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value30397346426744177
Percentage of DefinedBenefitPlanNetPeriodicBenefitCost100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ForeignPlan, us-gaap:PensionPlansDefinedBenefit



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-06-302017-03-31
Value48161618121516161617
Percentage of DefinedBenefitPlanNetPeriodicBenefitCost13.320.521.934.842.917.934.19.00.00.00.0

us-gaap:RetirementPlanType

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value-5-7-6-6-7-7-7-6-7-7-7-6-8
Percentage of DefinedBenefitPlanNetPeriodicBenefitCost-16.7-17.9-8.2-13.0-16.7-10.4-15.9-3.40.00.00.00.00.0

us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanRecognizedNetGainLossDueToSettlements1

country:US, us-gaap:PensionPlansDefinedBenefit



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value-1-8-37-11-6-35-14-147
Percentage of DefinedBenefitPlanRecognizedNetGainLossDueToSettlements1100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ForeignPlan, us-gaap:PensionPlansDefinedBenefit



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-06-302017-03-31
Value1000000.00.00.00.00.00.00.00.00.00.00.0
Percentage of DefinedBenefitPlanRecognizedNetGainLossDueToSettlements1-100.0-0.0-0.0-0.0-0.0-0.0-0.0-0.00.00.00.0

us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanServiceCost

country:US, us-gaap:PensionPlansDefinedBenefit



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value2120201920202022
Percentage of DefinedBenefitPlanServiceCost100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ForeignPlan, us-gaap:PensionPlansDefinedBenefit



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-06-302017-03-31
Value1413191819182022212019
Percentage of DefinedBenefitPlanServiceCost66.765.095.094.795.090.0100.0100.00.00.00.0

us-gaap:RetirementPlanType

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value1000000.00.01000000.00.00.00.00.01000000.00.01000000.00.01000000.00.0
Percentage of DefinedBenefitPlanServiceCost4.80.05.00.00.00.00.04.50.00.00.00.00.0

us-gaap:DividendsCommonStock



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value458463341346350354334337338319324331331313314313313
Percentage of DividendsCommonStock100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StatementEquityComponents

us-gaap:RetainedEarnings



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value458463341346350354334337338
Percentage of DividendsCommonStock100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value-12222-94-4975-77-26-139125-121417627
Percentage of EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems

cop:ConocophillipsCompany, srt:ReportableLegalEntities



Period End2020-03-312019-09-302019-06-302019-03-312018-09-30
Value0-11-100
Percentage of EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents-0.011.72.00.0-0.0

srt:NonGuarantorSubsidiaries, srt:ReportableLegalEntities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value-12221-83-4875-77-26
Percentage of EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents100.095.588.398.0100.0100.0100.0

dei:LegalEntity

us-gaap:EquitySecuritiesFvNiUnrealizedGainLoss

dei:EntityDomain



Period End2020-03-312019-03-31
Value-1691343
Percentage of EquitySecuritiesFvNiUnrealizedGainLoss100.0100.0

us-gaap:FinancialInstrument, dei:LegalEntity

cop:CenovusEnergy, cop:CenovusEnergyInc



Period End2020-03-31
Value-1690
Percentage of EquitySecuritiesFvNiUnrealizedGainLoss99.9

us-gaap:ExplorationExpense



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
Value1881513601221101021036995214759855134345761050521001061549482773459517296321313321277332219270679360266264176307252213383328386243225
Percentage of ExplorationExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems

cop:ConocophillipsCompany, srt:ReportableLegalEntities



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-30
Value2529547474138
Percentage of ExplorationExpense13.381.938.542.739.855.1

srt:NonGuarantorSubsidiaries, srt:ReportableLegalEntities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value163118657563646231
Percentage of ExplorationExpense86.778.118.161.557.362.760.244.9

us-gaap:StatementBusinessSegments

cop:AsiaPacificAndMiddleEast



Period End2020-03-31
Value31
Percentage of ExplorationExpense16.5

us-gaap:ForeignCurrencyTransactionGainLossBeforeTax



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
Value90-4721-28-1224-528-30-7-5-13-1031-1317-16-2172816838-7-1824-9736-231-151131-681736-1210-54-361817142-131
Percentage of ForeignCurrencyTransactionGainLossBeforeTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ConsolidatedEntities

srt:ParentCompany



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value00000-2412-16-18-627
Percentage of ForeignCurrencyTransactionGainLossBeforeTax0.0-0.00.0-0.0-0.0-100.0-240.0-57.160.085.7-540.0

us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems

cop:BurlingtonResourcesLLC, srt:ReportableLegalEntities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value00000-7842-58
Percentage of ForeignCurrencyTransactionGainLossBeforeTax0.0-0.00.0-0.0-0.0-325.0-840.0-207.1

cop:ConocophillipsCompany, srt:ReportableLegalEntities



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-30
Value16-23-6-30
Percentage of ForeignCurrencyTransactionGainLossBeforeTax1.128.682.150.060.00.0

srt:NonGuarantorSubsidiaries, srt:ReportableLegalEntities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value89-4915-5-6120-56102
Percentage of ForeignCurrencyTransactionGainLossBeforeTax98.9104.371.417.950.0500.01120.0364.3

us-gaap:IncomeStatementLocation

us-gaap:GainLossOnForeignCurrencyDerivativesRecordedInEarningsNet

us-gaap:ForeignCurrencyGainLoss



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-30
Value74-1924-232-42-251514-7465-35-86-97-631737-241-570457-35-22-267397515-2411
Percentage of GainLossOnForeignCurrencyDerivativesRecordedInEarningsNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DerivativeInstrumentRisk, us-gaap:IncomeStatementLocation

us-gaap:GainLossOnPriceRiskDerivativeInstrumentsNotDesignatedAsHedgingInstruments

us-gaap:CommodityContract, us-gaap:CostOfSales



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value-27-58-9-31-20-561824-2727-19-31-38
Percentage of GainLossOnPriceRiskDerivativeInstrumentsNotDesignatedAsHedgingInstruments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:CommodityContract, us-gaap:OtherIncome



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value2032-1-53541-1-11
Percentage of GainLossOnPriceRiskDerivativeInstrumentsNotDesignatedAsHedgingInstruments-7.4-0.0-33.3-6.55.08.916.720.8-14.83.75.33.2-2.6

us-gaap:CommodityContract, us-gaap:Sales



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value47734451951-29-2043-43175251
Percentage of GainLossOnPriceRiskDerivativeInstrumentsNotDesignatedAsHedgingInstruments-174.1-125.9-44.4-145.2-95.0-91.1-161.1-83.3-159.3-159.3-89.5-167.7-134.2

us-gaap:GainLossOnSaleOfPropertyPlantEquipment



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
Value-42821785821788811355733246187622158511282346918525278479
Percentage of GainLossOnSaleOfPropertyPlantEquipment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems

cop:ConocophillipsCompany, srt:ReportableLegalEntities



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-30
Value9269510-5750
Percentage of GainLossOnSaleOfPropertyPlantEquipment-21.4151.012.2-29.466.40.0

srt:NonGuarantorSubsidiaries, srt:ReportableLegalEntities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value-51-4-91072227273855
Percentage of GainLossOnSaleOfPropertyPlantEquipment121.4-4.9-51.087.8129.481.933.6100.0

us-gaap:IncomeLossFromEquityMethodInvestments



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
Value234128290173188307294265208198196178200181-6080-149-31223258205521764672572654709494362487409529122060212981160101717310041088868995981632373
Percentage of IncomeLossFromEquityMethodInvestments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ConsolidatedEntities

srt:ParentCompany



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value-16817783114163718901941190317059541638486
Percentage of IncomeLossFromEquityMethodInvestments-718.4607.81073.8946.21005.3632.2647.3643.4458.7827.3248.0

us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems

cop:BurlingtonResourcesLLC, srt:ReportableLegalEntities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value-426143461533473593481545
Percentage of IncomeLossFromEquityMethodInvestments-182.1111.7159.0308.1251.6193.2163.6205.7

cop:ConocophillipsCompany, srt:ReportableLegalEntities



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-30
Value1207282088162221661733
Percentage of IncomeLossFromEquityMethodInvestments51.3251.01206.9862.8736.7654.0

srt:NonGuarantorSubsidiaries, srt:ReportableLegalEntities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value233128288173186306294264
Percentage of IncomeLossFromEquityMethodInvestments99.6100.099.3100.098.999.7100.099.6

us-gaap:ConsolidationItems

srt:ConsolidationEliminations



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value1988-1764-4301-4258-3983-6570-4031-3982-2787-5487-757
Percentage of IncomeLossFromEquityMethodInvestments849.6-1378.1-1483.1-2461.3-2118.6-2140.1-1371.1-1502.6-1339.9-2771.2-386.2

us-gaap:IncomeLossFromEquityMethodInvestmentsNetOfDividendsOrDistributions



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
Value-31-334102-338-24-163105-1283439727843115-19230-252-18038121-80257347450-113123735719929195150-172423-315299570523-5694531692-503-3002692886-280
Percentage of IncomeLossFromEquityMethodInvestmentsNetOfDividendsOrDistributions100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance



Period End2020-03-312019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-30
Value346-103-39-29-1557117-170245500
Percentage of IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.00.00.0

us-gaap:IncreaseDecreaseInAccountsPayable



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-09-302009-06-302009-03-31
Value-29798-150-184-142-9239-101-181477-34-49-129-9-610-454-29-260-56-1302-596-258-282353-141-70-134528209842-18071859-146920380317532486507-502396702-1101549-529
Percentage of IncreaseDecreaseInAccountsPayable100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-09-302009-06-302009-03-31
Value79-66-120211-624-9712622-81-123145-10-59-9760-916-10281-2341-4922117-89-64105131-57-202-32167-250-818546-502370487-398-4-149636-201
Percentage of IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInReceivables



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
Value-1041-172128-282-179-382602-316-139951248-235-78292-15-548-549103-494-51-1368-593-554-37029078-163-410-249621420-529913163262996812750348-1348677-1200159-19251860
Percentage of IncreaseDecreaseInReceivables100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:InterestIncomeRelatedParty



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value23344434333333
Percentage of InterestIncomeRelatedParty100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:InterestPaidNet



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-09-30
Value20019620021519918817940522024524234932729732828224428723420219717818011219911818910215712821392291184253209286214336338322351231
Percentage of InterestPaidNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-09-30
Value264820431716638343617501749164316381922214074517381626174616281933129-47-12-22-32-24-24-514-20
Percentage of MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StatementEquityComponents

us-gaap:NoncontrollingInterest



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-09-30
Value264820431716638343617501749164316381922214074517381626174616281933129-47-12-22-32-24-24-514-20
Percentage of MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossBeforeReclassificationAndTax



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value-79920624771175-42359-35978-13450927184-724-82-2241183-706-2544796-2745-2038-1947668-222-1000623-1684-644-315925-513852636-2486549914
Percentage of OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossBeforeReclassificationAndTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditBeforeTax



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value-8-9-8-10-8-10-10-10-10-10-9-10-9-10-7-9-9-10-5-3-1-1-2-1-2-1-1-2-1
Percentage of OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditBeforeTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossAvailableForSaleSecuritiesTax



Period End2020-03-312019-03-31
Value-1000000.00.0
Percentage of OtherComprehensiveIncomeLossAvailableForSaleSecuritiesTax100.00.0

us-gaap:OtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentTax



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value-221-1000
Percentage of OtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentTax100.0100.0100.0100.00.00.00.0

us-gaap:OtherComprehensiveIncomeLossNetOfTax



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-30
Value-78829717387189-621195-26689-2261050-381232-749-73-2251101-122-2484948-2687-2487-1913696-200-710872-1638-609-252462-469886-117-2922578
Percentage of OtherComprehensiveIncomeLossNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StatementEquityComponents

us-gaap:AccumulatedOtherComprehensiveIncome



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312012-12-312012-09-30
Value-78829717387189-621195-26689-252462
Percentage of OtherComprehensiveIncomeLossNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-30
Value-11-9372-17-13201-136-93-11-48-35-16-4830-9182-590-35-161-32501-19-19-26-279-251-36-356315025-51736-4838
Percentage of OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansNetUnamortizedGainLossArisingDuringPeriodBeforeTax



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302014-12-312014-09-302014-06-302013-12-312013-09-302013-06-302012-12-312012-09-302012-06-302011-12-312011-09-30
Value594-14900-295187-4204513-32-7-150-31-69-231808-23115-840003863011-234-43238-11850
Percentage of OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansNetUnamortizedGainLossArisingDuringPeriodBeforeTax100.0100.0100.00.00.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.0100.0100.0100.0100.0100.0100.0100.00.0

us-gaap:OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-30
Value-4-2230-5-560-74-25-3-29-18-8-2627-2350-332-18-93-17315-11-12-11-190-155-20-2265942-29444-29-20
Percentage of OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossBeforeTax



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value-18-32-56-32-26-51-33-171-24-42-49-66-90-80-47-74-108-125-126-102-50-33-32-33-33-74-106-57-57
Percentage of OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossBeforeTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansNetOfTax



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value-8154-36-17-13344-17-127-11-19-26-36-53-47-27-42-63-78-77-64-32-140-19-20-20-317-65-36-35
Percentage of OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansTax



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value211255763431314202823132336374435171011121122402022
Percentage of OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax



Period End2020-03-312019-03-312018-12-312018-09-302018-06-302017-12-312017-09-302017-06-302016-12-312016-09-302016-06-302013-09-302013-06-302012-09-302012-06-302011-12-312011-09-30
Value-30000-185551-4240000001-160
Percentage of OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax100.00.00.00.00.0100.0100.0100.00.00.00.00.00.00.0100.0100.00.0

us-gaap:OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax



Period End2020-03-312019-03-312018-12-312018-09-302018-06-302017-12-312017-09-302017-06-302016-12-312016-09-302016-06-302013-09-302013-06-302012-09-302012-06-302011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value-20000-140506-4240000001000-158-265423
Percentage of OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax100.00.00.00.00.0100.0100.0100.00.00.00.00.00.00.0100.00.00.00.0100.0100.0100.0

us-gaap:OtherNonoperatingExpense



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
Value-673614825101431971751234682770
Percentage of OtherNonoperatingExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0

us-gaap:ConsolidatedEntities

srt:ParentCompany



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value000000000050
Percentage of OtherNonoperatingExpense-0.00.00.00.00.00.00.00.00.00.098.0

us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems

cop:ConocophillipsCompany, srt:ReportableLegalEntities



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-30
Value-63513126148
Percentage of OtherNonoperatingExpense100.097.292.9150.060.0103.5

srt:NonGuarantorSubsidiaries, srt:ReportableLegalEntities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value0711-4244-5
Percentage of OtherNonoperatingExpense-0.0100.02.87.1-50.096.040.0-3.5

us-gaap:OtherOperatingActivitiesCashFlowStatement



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value-284-180-426170-56441415-26729-62-542222-47-35-33109-126580195-321-133303-344-308116-9120617-503-510-46504-404-14336-67-185-28322
Percentage of OtherOperatingActivitiesCashFlowStatement100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PaymentsForProceedsFromInvestments



Period End2020-03-312019-03-31
Value9351
Percentage of PaymentsForProceedsFromInvestments100.0100.0

us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems

cop:ConocophillipsCompany, srt:ReportableLegalEntities



Period End2020-03-312019-03-31
Value12070
Percentage of PaymentsForProceedsFromInvestments129.10.0

srt:NonGuarantorSubsidiaries, srt:ReportableLegalEntities



Period End2020-03-312019-03-31
Value-2721
Percentage of PaymentsForProceedsFromInvestments-29.1100.0

us-gaap:PaymentsForProceedsFromOtherInvestingActivities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-04-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-09-302009-06-302009-03-31
Value44-38272-276150-138-41-36739215125-47-135-12963-55-2-4-8-7-3009-8550-50-4616152521-644-157-13-7-296-17793-12-120-105-6-3-38-1274829
Percentage of PaymentsForProceedsFromOtherInvestingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems

cop:ConocophillipsCompany, srt:ReportableLegalEntities



Period End2020-03-312019-09-302019-06-302019-03-312018-09-30
Value0267-2681502
Percentage of PaymentsForProceedsFromOtherInvestingActivities0.098.297.1100.0-4.9

srt:NonGuarantorSubsidiaries, srt:ReportableLegalEntities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value44-385-8013-43
Percentage of PaymentsForProceedsFromOtherInvestingActivities100.0100.01.82.90.0-9.4104.9

us-gaap:PaymentsOfDividendsCommonStock



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
Value458463341346350354334337338319324331331313314313313923922909910907907856855853852814815809808818843871900917944799816816744742697697696
Percentage of PaymentsOfDividendsCommonStock100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ConsolidatedEntities

srt:ParentCompany



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value458463341346350354334337338319
Percentage of PaymentsOfDividendsCommonStock100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems

cop:BurlingtonResourcesLLC, srt:ReportableLegalEntities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value045400000
Percentage of PaymentsOfDividendsCommonStock0.098.10.00.00.00.00.0

cop:ConocophillipsCompany, srt:ReportableLegalEntities



Period End2020-03-312019-09-302019-06-302019-03-312018-09-30
Value00166000
Percentage of PaymentsOfDividendsCommonStock0.00.0479.80.00.0

srt:NonGuarantorSubsidiaries, srt:ReportableLegalEntities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value02265849358739648400
Percentage of PaymentsOfDividendsCommonStock0.0489.2249.01036.7113.11367.20.0

us-gaap:ConsolidationItems

srt:ConsolidationEliminations



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value0-5093-849-5247-396-6648765-12170-311
Percentage of PaymentsOfDividendsCommonStock0.0-1100.0-249.0-1516.5-113.1-1878.0229.0-361.10.0-97.5

us-gaap:PaymentsToAcquireLongtermInvestments



Period End2020-03-312019-03-31
Value1430
Percentage of PaymentsToAcquireLongtermInvestments100.00.0

us-gaap:PaymentsToAcquireProductiveAssets



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
Value1649159516751729163716171599199915351517108810209669999161133182121372174240733324356458842463895
Percentage of PaymentsToAcquireProductiveAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems

cop:BurlingtonResourcesLLC, srt:ReportableLegalEntities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value14000059112
Percentage of PaymentsToAcquireProductiveAssets0.80.00.00.00.036.50.8

cop:ConocophillipsCompany, srt:ReportableLegalEntities



Period End2020-03-312019-09-302019-06-302019-03-312018-09-30
Value1971655445208264
Percentage of PaymentsToAcquireProductiveAssets11.998.825.712.716.5

srt:NonGuarantorSubsidiaries, srt:ReportableLegalEntities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value1452138514471453142914081335
Percentage of PaymentsToAcquireProductiveAssets88.186.886.484.087.387.183.5

us-gaap:ConsolidationItems

srt:ConsolidationEliminations



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value-141-1427-1690-6030-1-6-4351
Percentage of PaymentsToAcquireProductiveAssets-0.80.1-85.2-9.80.0-37.30.0-0.1-0.4-286.8

us-gaap:PaymentsToAcquireShortTermInvestments



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value342330089127322502488746252061618204727092434910512973020000038428221026407423994-9940497-102-1120424612101
Percentage of PaymentsToAcquireShortTermInvestments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.00.00.0100.0100.0100.0100.00.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0

us-gaap:PaymentsToFundLongtermLoansToRelatedParties



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-31
Value0000000000000000025-2-4117-4
Percentage of PaymentsToFundLongtermLoansToRelatedParties0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0100.0100.0100.0100.0100.0100.0

us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems

cop:BurlingtonResourcesLLC, srt:ReportableLegalEntities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value000005630
Percentage of PaymentsToFundLongtermLoansToRelatedParties0.00.00.00.00.00.00.0

cop:ConocophillipsCompany, srt:ReportableLegalEntities



Period End2020-03-312019-09-302019-06-302019-03-312018-09-30
Value1079101928
Percentage of PaymentsToFundLongtermLoansToRelatedParties0.00.00.00.00.0

srt:NonGuarantorSubsidiaries, srt:ReportableLegalEntities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value00000010
Percentage of PaymentsToFundLongtermLoansToRelatedParties0.00.00.00.00.00.00.0

us-gaap:ConsolidationItems

srt:ConsolidationEliminations



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value-10-2-7910-19-146-68-62-33-205
Percentage of PaymentsToFundLongtermLoansToRelatedParties0.00.00.00.00.00.00.00.00.00.0

us-gaap:ProceedsFromCollectionOfLongtermLoansToRelatedParties



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value66065062060059058057055053053052460661562155914571452103810381040
Percentage of ProceedsFromCollectionOfLongtermLoansToRelatedParties100.00.0100.00.0100.00.0100.00.0100.00.0100.00.0100.00.0100.00.0100.00.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ConsolidatedEntities

srt:ParentCompany



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value000005890000
Percentage of ProceedsFromCollectionOfLongtermLoansToRelatedParties0.00.00.00.00.00.00.00.00.00.0

us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems

cop:BurlingtonResourcesLLC, srt:ReportableLegalEntities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value000002120
Percentage of ProceedsFromCollectionOfLongtermLoansToRelatedParties0.00.00.00.00.00.00.0

cop:ConocophillipsCompany, srt:ReportableLegalEntities



Period End2020-03-312019-09-302019-06-302019-03-312018-09-30
Value7172069932
Percentage of ProceedsFromCollectionOfLongtermLoansToRelatedParties107.6110.80.0111.31553.3

srt:NonGuarantorSubsidiaries, srt:ReportableLegalEntities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value66065082070
Percentage of ProceedsFromCollectionOfLongtermLoansToRelatedParties100.00.0100.00.0132.30.0116.7

us-gaap:ConsolidationItems

srt:ConsolidationEliminations



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value-710-720-89-801-942-1194-1306-1789
Percentage of ProceedsFromCollectionOfLongtermLoansToRelatedParties-107.60.0-110.80.0-143.50.0-1570.00.0-2213.60.0

us-gaap:ProceedsFromIssuanceOfDebt



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302012-12-312012-09-30
Value00000000000000004594001511-346
Percentage of ProceedsFromIssuanceOfDebt0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0100.00.00.0100.0100.0

us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems

cop:ConocophillipsCompany, srt:ReportableLegalEntities



Period End2020-03-312019-09-302019-06-302019-03-312018-09-30
Value000010
Percentage of ProceedsFromIssuanceOfDebt0.00.00.00.00.0

srt:NonGuarantorSubsidiaries, srt:ReportableLegalEntities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value10279101914658
Percentage of ProceedsFromIssuanceOfDebt0.00.00.00.00.00.00.0

us-gaap:ConsolidationItems

srt:ConsolidationEliminations



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value-10-2-7910-19-146-68-62-33-205
Percentage of ProceedsFromIssuanceOfDebt0.00.00.00.00.00.00.00.00.00.0

us-gaap:ProceedsFromPaymentsForOtherFinancingActivities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-09-302009-06-302009-03-31
Value-24-46-18-41-14-12-63-16-32-32-16-48-16-44-14-41-38-28-15-17-18-448-11-17-3028-202-186-205-178-178-115-254-143-185-174-183-165-189-169-186-174-685-203-203
Percentage of ProceedsFromPaymentsForOtherFinancingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ConsolidatedEntities

srt:ParentCompany



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value1110221111
Percentage of ProceedsFromPaymentsForOtherFinancingActivities-4.2-2.2-5.6-0.0-14.3-16.7-1.6-6.2-3.1-3.1

us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems

cop:BurlingtonResourcesLLC, srt:ReportableLegalEntities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value0-4161-7630000
Percentage of ProceedsFromPaymentsForOtherFinancingActivities-0.09045.74238.9-0.0-0.0-0.0-0.0

srt:NonGuarantorSubsidiaries, srt:ReportableLegalEntities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value-11-241864553-16471-289
Percentage of ProceedsFromPaymentsForOtherFinancingActivities45.85256.5-3583.3-129.3114.3-3925.0458.7

us-gaap:ConsolidationItems

srt:ConsolidationEliminations



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value-14653299-9402385-16883108120510703
Percentage of ProceedsFromPaymentsForOtherFinancingActivities58.3-14200.0-550.0229.3-0.0-19875.02679.4-19425.0-3765.6-33446.9

us-gaap:ProceedsFromSaleOfProductiveAssets



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
Value54992221955914268886139169120299810707358675622813516292912117316913711548
Percentage of ProceedsFromSaleOfProductiveAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ConsolidatedEntities

srt:ParentCompany



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value0237400000002765
Percentage of ProceedsFromSaleOfProductiveAssets0.02580.40.00.00.00.00.00.00.02304.2

us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems

cop:BurlingtonResourcesLLC, srt:ReportableLegalEntities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value067630001926
Percentage of ProceedsFromSaleOfProductiveAssets0.06.534.40.00.00.02239.5

cop:ConocophillipsCompany, srt:ReportableLegalEntities



Period End2020-03-312019-09-302019-06-302019-03-312018-09-30
Value1402590014233
Percentage of ProceedsFromSaleOfProductiveAssets25.5116.70.0100.038.4

srt:NonGuarantorSubsidiaries, srt:ReportableLegalEntities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value40929467559050653
Percentage of ProceedsFromSaleOfProductiveAssets74.531.521.0100.00.073.561.6

us-gaap:ConsolidationItems

srt:ConsolidationEliminations



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value0-6632-160100-130-101-11-15054
Percentage of ProceedsFromSaleOfProductiveAssets0.0-7208.7-72.10.00.0-1.90.0-72.7-6.5-12545.0

us-gaap:ConsolidationItems, us-gaap:IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperations, us-gaap:StatementBusinessSegments

us-gaap:ProceedsFromSalesOfBusinessAffiliateAndProductiveAssets

us-gaap:OperatingSegments, cop:Niobrara, cop:LowerFortyEightSegment



Period End2020-03-31
Value359
Percentage of ProceedsFromSalesOfBusinessAffiliateAndProductiveAssets100.0

us-gaap:OperatingSegments, cop:WaddellRanch, cop:LowerFortyEightSegment



Period End2020-02-29
Value184
Percentage of ProceedsFromSalesOfBusinessAffiliateAndProductiveAssets0.0

us-gaap:ConsolidationItems, us-gaap:StatementScenario, us-gaap:IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperations, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, us-gaap:ScenarioPlan, cop:BarossaProject, cop:AsiaPacificAndMiddleEast



Period End2020-03-31
Value75
Percentage of ProceedsFromSalesOfBusinessAffiliateAndProductiveAssets20.9

us-gaap:OperatingSegments, us-gaap:ScenarioPlan, cop:OtherProperties, cop:LowerFortyEightSegment



Period End2020-01-31
Value186
Percentage of ProceedsFromSalesOfBusinessAffiliateAndProductiveAssets0.0

us-gaap:RelatedPartyTransactionPurchasesFromRelatedParty



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-31
Value001721252524232625232626252427252522475248484941929343
Percentage of RelatedPartyTransactionPurchasesFromRelatedParty0.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RelatedPartyTransactionSellingGeneralAndAdministrativeExpensesFromTransactionsWithRelatedParty



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-31
Value1519141413161520161412152012166181718215252524346524140
Percentage of RelatedPartyTransactionSellingGeneralAndAdministrativeExpensesFromTransactionsWithRelatedParty100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RepaymentsOfDebt



Period End2020-03-312019-03-312018-03-312017-06-302017-03-312016-03-312015-03-312014-03-312013-03-312012-03-31
Value24192888300083964574504847
Percentage of RepaymentsOfDebt100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems

cop:ConocophillipsCompany, srt:ReportableLegalEntities



Period End2020-03-312019-03-31
Value020
Percentage of RepaymentsOfDebt0.0105.3

srt:NonGuarantorSubsidiaries, srt:ReportableLegalEntities



Period End2020-03-312019-03-31
Value9588
Percentage of RepaymentsOfDebt395.8463.2

us-gaap:ConsolidationItems

srt:ConsolidationEliminations



Period End2020-03-312019-03-312018-03-31
Value-71-89-1306
Percentage of RepaymentsOfDebt-295.8-468.4-45.2

us-gaap:ConsolidationItems, us-gaap:IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperations, us-gaap:StatementBusinessSegments

us-gaap:ResultsOfOperationsIncomeBeforeIncomeTaxes

us-gaap:OperatingSegments, cop:AustraliaWestAssets, cop:AsiaPacificAndMiddleEast



Period End2020-03-312019-03-31
Value192115
Percentage of ResultsOfOperationsIncomeBeforeIncomeTaxes100.0100.0

us-gaap:OperatingSegments, cop:Niobrara, cop:LowerFortyEightSegment



Period End2020-03-31
Value27
Percentage of ResultsOfOperationsIncomeBeforeIncomeTaxes14.1

us-gaap:RevenueFromRelatedParties



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-30
Value0000000003524302937412827382827253032362128353181791123111123
Percentage of RevenueFromRelatedParties0.00.00.00.00.00.00.00.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ConsolidatedEntities

srt:ParentCompany



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value0000079109910
Percentage of RevenueFromRelatedParties0.00.00.00.00.00.00.00.00.025.741.7

us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems

cop:BurlingtonResourcesLLC, srt:ReportableLegalEntities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value37101013151511
Percentage of RevenueFromRelatedParties0.00.00.00.00.00.00.00.0

cop:ConocophillipsCompany, srt:ReportableLegalEntities



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-30
Value303423263434
Percentage of RevenueFromRelatedParties0.00.00.00.00.00.0

srt:NonGuarantorSubsidiaries, srt:ReportableLegalEntities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value9071276132317821161143915971392
Percentage of RevenueFromRelatedParties0.00.00.00.00.00.00.00.0

us-gaap:ConsolidationItems

srt:ConsolidationEliminations



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value-940-1313-1367-1815-1200-1359-1704-1447-1266-974-904
Percentage of RevenueFromRelatedParties0.00.00.00.00.00.00.00.00.0-2782.9-3766.7

us-gaap:Range, us-gaap:StatementGeographical, us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency, us-gaap:FinancialInstrument, us-gaap:MeasurementInputType

us-gaap:ServicingAssetsAndServicingLiabilitiesAtFairValueAssumptionsUsedToEstimateFairValueDiscountRate

srt:ArithmeticAverage, cop:LowerFortyEight, us-gaap:FairValueInputsLevel3, us-gaap:FairValueMeasurementsNonrecurring, cop:WindRiverBasin, us-gaap:MeasurementInputDiscountRate



Period End2020-03-31
Value0.083
Percentage of ServicingAssetsAndServicingLiabilitiesAtFairValueAssumptionsUsedToEstimateFairValueDiscountRate100.0

srt:Maximum, cop:LowerFortyEight, us-gaap:FairValueInputsLevel3, us-gaap:FairValueMeasurementsNonrecurring, cop:WindRiverBasin, us-gaap:MeasurementInputDiscountRate



Period End2020-03-31
Value0.091
Percentage of ServicingAssetsAndServicingLiabilitiesAtFairValueAssumptionsUsedToEstimateFairValueDiscountRate109.6

srt:Minimum, cop:LowerFortyEight, us-gaap:FairValueInputsLevel3, us-gaap:FairValueMeasurementsNonrecurring, cop:WindRiverBasin, us-gaap:MeasurementInputDiscountRate



Period End2020-03-31
Value0.079
Percentage of ServicingAssetsAndServicingLiabilitiesAtFairValueAssumptionsUsedToEstimateFairValueDiscountRate95.2

us-gaap:StockIssuedDuringPeriodValueShareBasedCompensation



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312012-12-312012-09-30
Value44293245-22111210420259114
Percentage of StockIssuedDuringPeriodValueShareBasedCompensation100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StatementEquityComponents

us-gaap:AdditionalPaidInCapital



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312012-12-312012-09-30
Value44293245-22111210420194114
Percentage of StockIssuedDuringPeriodValueShareBasedCompensation100.0100.0100.0100.0100.0100.0100.0100.0100.074.9100.0

us-gaap:StockholdersEquityOther



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-31
Value2-21-33-265-1-3109-9951088-332236-931-19-16211103978-24171056-26201106-1838868-13600-113411151067-27737519622619-1244279
Percentage of StockholdersEquityOther100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StatementEquityComponents

us-gaap:NoncontrollingInterest



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312010-09-30
Value1-10-21-60-20010-11-11-20010
Percentage of StockholdersEquityOther50.050.00.066.733.32.3-0.066.70.00.0-0.30.00.1-5.30.60.1-0.1-0.00.0-0.00.0

us-gaap:TreasuryStock



Period End2020-03-312019-09-302019-06-302019-03-31
Value11-21
Percentage of StockholdersEquityOther50.0100.066.733.3

us-gaap:TaxesExcludingIncomeAndExciseTaxes



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
Value250247237194275280312273183205175198231201161197180246206225224332493612651
Percentage of TaxesExcludingIncomeAndExciseTaxes100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems

cop:ConocophillipsCompany, srt:ReportableLegalEntities



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-30
Value482833463328
Percentage of TaxesExcludingIncomeAndExciseTaxes19.211.817.016.710.610.3

srt:NonGuarantorSubsidiaries, srt:ReportableLegalEntities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value202215209161229248279245
Percentage of TaxesExcludingIncomeAndExciseTaxes80.887.088.283.083.388.689.489.7

us-gaap:TreasuryStockValueAcquiredCostMethod



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value7267497491250752926927646500
Percentage of TreasuryStockValueAcquiredCostMethod100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StatementEquityComponents

us-gaap:TreasuryStock



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value7267497491250752926927646500
Percentage of TreasuryStockValueAcquiredCostMethod100.0100.0100.0100.0100.0100.0100.0100.0100.0

cop:AccountsAndFinancingReceivableAfterAllowanceForCreditLossNoncurrentAtCostPlusAccruedInterest



Period End2020-03-312019-12-31
Value30
Percentage of AccountsAndFinancingReceivableAfterAllowanceForCreditLossNoncurrentAtCostPlusAccruedInterest100.00.0

us-gaap:CashAndCashEquivalents, us-gaap:DerivativeInstrumentRisk

us-gaap:BankTimeDeposits, cop:RemainingMaturitiesGreaterThanOneYearThroughFiveYears



Period End2020-03-312019-12-31
Value30
Percentage of AccountsAndFinancingReceivableAfterAllowanceForCreditLossNoncurrentAtCostPlusAccruedInterest100.00.0

cop:AccountsPayableIncludingRelatedPartiesCurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-31
Value29213200317136353846389539183666388640303653
Percentage of AccountsPayableIncludingRelatedPartiesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems

cop:BurlingtonResourcesLLC, srt:ReportableLegalEntities



Period End2020-03-312019-12-312019-09-302019-06-302018-12-31
Value66210076
Percentage of AccountsPayableIncludingRelatedPartiesCurrent2.30.70.00.02.0

cop:ConocophillipsCompany, srt:ReportableLegalEntities



Period End2020-03-312019-12-312019-09-302019-06-302018-12-312018-09-30
Value214826702869290950983444
Percentage of AccountsPayableIncludingRelatedPartiesCurrent73.583.490.580.0130.987.9

srt:NonGuarantorSubsidiaries, srt:ReportableLegalEntities



Period End2020-03-312019-12-312019-09-302019-06-302018-12-31
Value30143084311635417113
Percentage of AccountsPayableIncludingRelatedPartiesCurrent103.296.498.397.4182.6

us-gaap:ConsolidationItems

srt:ConsolidationEliminations



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-31
Value-2307-2575-2814-2815-3889-8392-3423-2864
Percentage of AccountsPayableIncludingRelatedPartiesCurrent-79.0-80.5-88.7-77.4-101.1-215.5-87.4-71.1

cop:AssetRetirementObligationsAndAccruedEnvironmentalCostNonCurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value5316535260875996773076887554766577897631
Percentage of AssetRetirementObligationsAndAccruedEnvironmentalCostNonCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems

cop:ConocophillipsCompany, srt:ReportableLegalEntities



Period End2020-03-312019-12-312019-09-302019-06-302018-12-312018-09-30
Value322322410399415424
Percentage of AssetRetirementObligationsAndAccruedEnvironmentalCostNonCurrent6.16.06.76.75.45.6

srt:NonGuarantorSubsidiaries, srt:ReportableLegalEntities



Period End2020-03-312019-12-312019-09-302019-06-302018-12-31
Value49945030567755977273
Percentage of AssetRetirementObligationsAndAccruedEnvironmentalCostNonCurrent93.994.093.393.394.6

cop:CashAndCashEquivalentsCarriedAtCostPlusAccruedInterest



Period End2020-03-312019-12-31
Value38895079
Percentage of CashAndCashEquivalentsCarriedAtCostPlusAccruedInterest100.0100.0

us-gaap:CashAndCashEquivalents

us-gaap:Cash



Period End2020-03-312019-12-31
Value550759
Percentage of CashAndCashEquivalentsCarriedAtCostPlusAccruedInterest14.114.9

us-gaap:DemandDeposits



Period End2020-03-312019-12-31
Value13871483
Percentage of CashAndCashEquivalentsCarriedAtCostPlusAccruedInterest35.729.2

us-gaap:CashAndCashEquivalents, us-gaap:DerivativeInstrumentRisk

us-gaap:BankTimeDeposits, cop:Remainingmaturities1to90days



Period End2020-03-312019-12-31
Value19352030
Percentage of CashAndCashEquivalentsCarriedAtCostPlusAccruedInterest49.840.0

us-gaap:CommercialPaper, cop:Remainingmaturities1to90days



Period End2020-03-312019-12-31
Value0413
Percentage of CashAndCashEquivalentsCarriedAtCostPlusAccruedInterest0.08.1

us-gaap:USGovernmentDebtSecurities, cop:Remainingmaturities1to90days



Period End2020-03-312019-12-31
Value17394
Percentage of CashAndCashEquivalentsCarriedAtCostPlusAccruedInterest0.47.8

us-gaap:FinancialInstrument, dei:LegalEntity

cop:InvestmentInEquitySecuritiesFairValue

cop:CenovusEnergy, dei:EntityDomain



Period End2020-03-312019-12-312017-05-17
Value42021101960
Percentage of InvestmentInEquitySecuritiesFairValue100.0100.0100.0

cop:OtherCommonStockholdersEquity



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
Value-6230-4761-4338-3793-2675-2071-5457588312162370225335493426427442964457334834245841478574079823116621079410930115871060912141126491264212215152481603019125250952749228165302052845429809
Percentage of OtherCommonStockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ConsolidatedEntities

srt:ParentCompany



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-31
Value-6230-4761-4338-3856-2739-2135-5841178
Percentage of OtherCommonStockholdersEquity100.0100.0100.0101.7102.4103.1107.296.9

us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems

cop:BurlingtonResourcesLLC, srt:ReportableLegalEntities



Period End2020-03-312019-12-312019-09-302019-06-302018-12-31
Value61336729107581151711285
Percentage of OtherCommonStockholdersEquity-98.4-141.3-248.0-303.6-544.9

cop:ConocophillipsCompany, srt:ReportableLegalEntities



Period End2020-03-312019-12-312019-09-302019-06-302018-12-312018-09-30
Value179231871218415181811794419548
Percentage of OtherCommonStockholdersEquity-287.7-393.0-424.5-479.3-866.4-3586.8

srt:NonGuarantorSubsidiaries, srt:ReportableLegalEntities



Period End2020-03-312019-12-312019-09-302019-06-302018-12-31
Value2567826454285732991529613
Percentage of OtherCommonStockholdersEquity-412.2-555.6-658.7-788.7-1429.9

us-gaap:ConsolidationItems

srt:ConsolidationEliminations



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-31
Value-49734-51895-57746-59550-59231-58778-49013-51749
Percentage of OtherCommonStockholdersEquity798.31090.01331.21570.02214.22838.18993.2-4255.7

us-gaap:ConsolidationItems, us-gaap:IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperations, us-gaap:StatementBusinessSegments

cop:PercentSold

us-gaap:OperatingSegments, cop:DarwinLngFacility, cop:AsiaPacificAndMiddleEast



Period End2020-03-31
Value0.569
Percentage of PercentSold100.0

cop:ShortTermInvestmentsCarriedAtCostPlustAccruedInterest



Period End2020-03-312019-12-31
Value36302929
Percentage of ShortTermInvestmentsCarriedAtCostPlustAccruedInterest100.0100.0

us-gaap:CashAndCashEquivalents, us-gaap:DerivativeInstrumentRisk

us-gaap:BankTimeDeposits, cop:RemainingMaturitiesFrom91To180Days



Period End2020-03-312019-12-31
Value274465
Percentage of ShortTermInvestmentsCarriedAtCostPlustAccruedInterest7.515.9

us-gaap:BankTimeDeposits, cop:RemainingMaturitiesWithinOneYear



Period End2020-03-312019-12-31
Value110
Percentage of ShortTermInvestmentsCarriedAtCostPlustAccruedInterest0.30.0

us-gaap:BankTimeDeposits, cop:Remainingmaturities1to90days



Period End2020-03-312019-12-31
Value33451395
Percentage of ShortTermInvestmentsCarriedAtCostPlustAccruedInterest92.147.6

us-gaap:CommercialPaper, cop:Remainingmaturities1to90days



Period End2020-03-312019-12-31
Value01069
Percentage of ShortTermInvestmentsCarriedAtCostPlustAccruedInterest0.036.5

cop:ShortTermInvestmentsExcludingCenovus



Period End2020-03-312019-12-312019-09-302018-12-31
Value38663028908248
Percentage of ShortTermInvestmentsExcludingCenovus100.0100.0100.0100.0

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cop:ConocophillipsCompany, srt:ReportableLegalEntities



Period End2020-03-312019-12-312019-09-302018-12-31
Value379926704000
Percentage of ShortTermInvestmentsExcludingCenovus98.388.244.10.0

srt:NonGuarantorSubsidiaries, srt:ReportableLegalEntities



Period End2020-03-312019-12-312019-09-302018-12-31
Value67358508248
Percentage of ShortTermInvestmentsExcludingCenovus1.711.855.9100.0

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cop:RemainingMaturitiesWithinOneYear, us-gaap:CarryingReportedAmountFairValueDisclosure, us-gaap:CommercialPaper



Period End2020-03-312019-12-31
Value11030
Percentage of ShortTermInvestmentsExcludingCenovus2.81.0

cop:RemainingMaturitiesWithinOneYear, us-gaap:CarryingReportedAmountFairValueDisclosure, us-gaap:CorporateDebtSecurities



Period End2020-03-312019-12-31
Value12659
Percentage of ShortTermInvestmentsExcludingCenovus3.31.9

cop:RemainingMaturitiesWithinOneYear, us-gaap:CarryingReportedAmountFairValueDisclosure, us-gaap:USGovernmentDebtSecurities



Period End2020-03-312019-12-31
Value010
Percentage of ShortTermInvestmentsExcludingCenovus0.00.3

us-gaap:FairValueByMeasurementBasis

us-gaap:CarryingReportedAmountFairValueDisclosure



Period End2020-03-312019-12-31
Value23699
Percentage of ShortTermInvestmentsExcludingCenovus6.13.3

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srt:ProvedDevelopedReservesVolume

srt:ArithmeticAverage, cop:LowerFortyEight, us-gaap:FairValueInputsLevel3, us-gaap:FairValueMeasurementsNonrecurring, cop:WindRiverBasin, us-gaap:ValuationTechniqueDiscountedCashFlow



Period End2020-03-31
Value22.9
Percentage of ProvedDevelopedReservesVolume100.0

srt:Maximum, cop:LowerFortyEight, us-gaap:FairValueInputsLevel3, us-gaap:FairValueMeasurementsNonrecurring, cop:WindRiverBasin, us-gaap:ValuationTechniqueDiscountedCashFlow



Period End2020-03-31
Value55.2
Percentage of ProvedDevelopedReservesVolume241.0

srt:Minimum, cop:LowerFortyEight, us-gaap:FairValueInputsLevel3, us-gaap:FairValueMeasurementsNonrecurring, cop:WindRiverBasin, us-gaap:ValuationTechniqueDiscountedCashFlow



Period End2020-03-31
Value8.4
Percentage of ProvedDevelopedReservesVolume36.7

us-gaap:AccountsAndNotesReceivableNet



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
Value21163267347834903701392043193750403241793222302031053249316331443753431443325044524666758273
Percentage of AccountsAndNotesReceivableNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AccountsNotesLoansAndFinancingReceivableByReceivableType

us-gaap:AccountsReceivableNet

us-gaap:TradeAccountsReceivable



Period End2020-03-312019-12-312019-03-312018-12-31
Value1287237226382889
Percentage of AccountsReceivableNet100.0100.0100.0100.0

us-gaap:GuaranteeObligationsByNature

us-gaap:AccrualForEnvironmentalLossContingencies

us-gaap:IndemnificationGuarantee



Period End2020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
Value303030303040404040404040404040404040404050505050
Percentage of AccrualForEnvironmentalLossContingencies100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StatementGeographical, us-gaap:EnvironmentalRemediationContingency, dei:LegalEntity

cop:UnitedStatesAndCanada, cop:CleanupRemediationActivities, dei:EntityDomain



Period End2020-03-312019-12-31
Value170171
Percentage of AccrualForEnvironmentalLossContingencies566.70.0

us-gaap:AccumulatedOtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax



Period End2020-03-312019-12-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302016-12-312012-09-302012-06-302011-12-31
Value-200000-5882-4240110
Percentage of AccumulatedOtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax100.00.00.00.00.00.0100.0100.0100.00.0100.0100.00.0

us-gaap:AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302009-12-312008-12-31
Value-339-350-443-371-388-361-160-296-389-400-448-483-499-547-517-526-525-443-1033-1068-1229-1261-760-779-798-824-1103-1354-1390-1425-1362-1212-1920-19711235128313211358136014091504-1434
Percentage of AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AccumulatedOtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentNetOfTax



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302009-12-312008-12-31
Value-5804-5007-5211-5456-5526-5702-5282-5341-4982-5060-4926-5435-5462-5646-4927-4845-4621-5804-5092-2573-3360-6411345327726002826381531944868551257005088589750634444741468745980535032984576-431
Percentage of AccumulatedOtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AdditionalPaidInCapitalCommonStock



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
Value47027469834695446922468774687946858467464664246622465954655846510465074648046429463654635746311462444613646071460004592645754456904563745531454254532445130450164493644725446104446844314441324395643869437424368143396
Percentage of AdditionalPaidInCapitalCommonStock100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AllowanceForDoubtfulAccountsReceivableCurrent



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
Value31312111125112344455656777455888910101012235230293338322877697661
Percentage of AllowanceForDoubtfulAccountsReceivableCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

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us-gaap:AssetRetirementObligationsNoncurrent

us-gaap:OperatingSegments, cop:OtherAccruals, cop:AustraliaWestAssets, us-gaap:AssetRetirementObligationCosts, cop:AsiaPacificAndMiddleEast



Period End2020-03-31
Value700
Percentage of AssetRetirementObligationsNoncurrent100.0

us-gaap:ConsolidationItems, us-gaap:IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperations, us-gaap:RegulatoryLiability, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, cop:AustraliaWestAssets, us-gaap:AssetRetirementObligationCosts, cop:AsiaPacificAndMiddleEast



Period End2020-03-31
Value700
Percentage of AssetRetirementObligationsNoncurrent100.0

us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency

us-gaap:AssetsFairValueDisclosure

us-gaap:FairValueInputsLevel1, us-gaap:FairValueMeasurementsRecurring



Period End2020-03-312019-12-312019-09-302019-06-302018-12-312013-12-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value6372308210420651698105013572097233233442807385119681456
Percentage of AssetsFairValueDisclosure100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FairValueInputsLevel2, us-gaap:FairValueMeasurementsRecurring



Period End2020-03-312019-12-312019-09-302019-06-302018-12-312013-12-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value60633086106181177567803133620581991193619681779
Percentage of AssetsFairValueDisclosure95.114.34.15.110.716.941.838.357.361.570.950.3100.0122.2

us-gaap:FairValueInputsLevel3, us-gaap:FairValueMeasurementsRecurring



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312013-12-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value353624412333101818406672686463
Percentage of AssetsFairValueDisclosure5.51.61.12.00.01.91.01.30.91.72.02.61.83.34.3

us-gaap:FairValueByMeasurementFrequency

us-gaap:FairValueMeasurementsRecurring



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302016-12-312015-12-312014-12-312013-12-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value1278267422142212208519122387247020582210228617713128494954123719422918370854684870585540003298
Percentage of AssetsFairValueDisclosure200.6115.9105.2107.10.0112.60.00.00.00.00.00.00.00.00.0117.8143.1139.2159.0163.5173.5152.0203.3226.5

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

cop:LowerFortyEight, us-gaap:FairValueInputsLevel3, us-gaap:FairValueMeasurementsNonrecurring, cop:WindRiverBasin



Period End2020-03-31
Value77
Percentage of AssetsFairValueDisclosure12.1

us-gaap:ConsolidationItems, us-gaap:IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperations, us-gaap:StatementBusinessSegments

us-gaap:AssetsOfDisposalGroupIncludingDiscontinuedOperation

us-gaap:OperatingSegments, cop:AustraliaWestAssets, cop:AsiaPacificAndMiddleEast



Period End2020-03-31
Value700
Percentage of AssetsOfDisposalGroupIncludingDiscontinuedOperation100.0

us-gaap:OperatingSegments, cop:Niobrara, cop:LowerFortyEightSegment



Period End2020-03-312019-12-02
Value397390
Percentage of AssetsOfDisposalGroupIncludingDiscontinuedOperation56.70.0

us-gaap:AvailableForSaleDebtSecuritiesAmortizedCostBasis



Period End2020-03-312019-12-31
Value462241
Percentage of AvailableForSaleDebtSecuritiesAmortizedCostBasis100.0100.0

us-gaap:FinancialInstrument

us-gaap:AssetBackedSecurities



Period End2020-03-312019-12-31
Value3819
Percentage of AvailableForSaleDebtSecuritiesAmortizedCostBasis8.27.9

us-gaap:CommercialPaper



Period End2020-03-312019-12-31
Value12938
Percentage of AvailableForSaleDebtSecuritiesAmortizedCostBasis27.915.8

us-gaap:CorporateDebtSecurities



Period End2020-03-312019-12-31
Value269159
Percentage of AvailableForSaleDebtSecuritiesAmortizedCostBasis58.266.0

us-gaap:USGovernmentCorporationsAndAgenciesSecurities



Period End2020-03-31
Value5
Percentage of AvailableForSaleDebtSecuritiesAmortizedCostBasis1.1

us-gaap:USGovernmentDebtSecurities



Period End2020-03-312019-12-31
Value2125
Percentage of AvailableForSaleDebtSecuritiesAmortizedCostBasis4.510.4

us-gaap:AvailableForSaleSecuritiesDebtSecurities



Period End2020-03-312019-12-31
Value459241
Percentage of AvailableForSaleSecuritiesDebtSecurities100.0100.0

us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency

us-gaap:FairValueInputsLevel1, us-gaap:FairValueMeasurementsRecurring



Period End2020-03-312019-12-31
Value2125
Percentage of AvailableForSaleSecuritiesDebtSecurities4.610.4

us-gaap:FairValueInputsLevel2, us-gaap:FairValueMeasurementsRecurring



Period End2020-03-312019-12-31
Value438216
Percentage of AvailableForSaleSecuritiesDebtSecurities95.489.6

us-gaap:FairValueByMeasurementBasis

us-gaap:CarryingReportedAmountFairValueDisclosure



Period End2020-03-312019-12-312018-12-18
Value4592410
Percentage of AvailableForSaleSecuritiesDebtSecurities100.0100.00.0

us-gaap:FairValueByMeasurementFrequency

us-gaap:FairValueMeasurementsRecurring



Period End2020-03-312019-12-31
Value459241
Percentage of AvailableForSaleSecuritiesDebtSecurities100.0100.0

us-gaap:CapitalizedExploratoryWellCosts



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302009-12-312008-12-312007-12-31
Value99010209731001869856986970861853872860834106313421293132712601466142313101299128512619979941066915123910381013105710081037104410491042101310611002908660589
Percentage of CapitalizedExploratoryWellCosts100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ContractWithCustomerLiability



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value80808013087206184243251251
Percentage of ContractWithCustomerLiability100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DebtAndCapitalLeaseObligations



Period End2020-03-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-31
Value149731489514968197032727524880225652166221725226232359228653
Percentage of DebtAndCapitalLeaseObligations100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredCreditsAndOtherLiabilities



Period End2020-03-312019-12-312019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-31
Value170418641872183811921330121811611269141714441520152516131521152418281931172418281665157917521952180118381775176822162523248028422784
Percentage of DeferredCreditsAndOtherLiabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ConsolidatedEntities

srt:ParentCompany



Period End2020-03-312019-12-312019-06-302019-03-312018-12-312018-09-302017-12-31
Value301017871807188972520421528
Percentage of DeferredCreditsAndOtherLiabilities176.695.996.5102.860.8153.5120.4

us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems

cop:BurlingtonResourcesLLC, srt:ReportableLegalEntities



Period End2020-03-312019-12-312019-06-302018-12-31
Value918826987839
Percentage of DeferredCreditsAndOtherLiabilities53.944.352.770.4

cop:ConocophillipsCompany, srt:ReportableLegalEntities



Period End2020-03-312019-12-312019-06-302018-12-312018-09-30
Value864975148680927711064
Percentage of DeferredCreditsAndOtherLiabilities507.6403.1463.7778.3831.9

srt:NonGuarantorSubsidiaries, srt:ReportableLegalEntities



Period End2020-03-312019-12-312019-06-302018-12-31
Value8941927197798126
Percentage of DeferredCreditsAndOtherLiabilities524.7497.4522.4681.7

us-gaap:ConsolidationItems

srt:ConsolidationEliminations



Period End2020-03-312019-12-312019-06-302019-03-312018-12-312018-09-302017-12-31
Value-19814-17534-19381-20205-17775-20400-15629
Percentage of DeferredCreditsAndOtherLiabilities-1162.8-940.7-1035.3-1099.3-1491.2-1533.8-1231.6

us-gaap:DeferredIncomeTaxLiabilitiesNet



Period End2020-03-312019-12-312018-12-31
Value414146345021
Percentage of DeferredIncomeTaxLiabilitiesNet100.0100.0100.0

us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems

srt:NonGuarantorSubsidiaries, srt:ReportableLegalEntities



Period End2020-03-312019-12-312018-12-31
Value475154385819
Percentage of DeferredIncomeTaxLiabilitiesNet114.7117.4115.9

us-gaap:ConsolidationItems

srt:ConsolidationEliminations



Period End2020-03-312019-12-312018-12-31
Value-610-804-798
Percentage of DeferredIncomeTaxLiabilitiesNet-14.7-17.4-15.9

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us-gaap:DefinedBenefitPlanExpectedFutureEmployerContributionsRemainderOfFiscalYear

country:US



Period End2020-03-312019-06-302018-09-302018-06-302018-03-312017-09-30
Value13020516017070800
Percentage of DefinedBenefitPlanExpectedFutureEmployerContributionsRemainderOfFiscalYear100.0100.0100.0100.0100.0100.0

us-gaap:ForeignPlan



Period End2020-03-312019-06-302018-09-302018-06-302018-03-312017-09-30
Value70185160150150120
Percentage of DefinedBenefitPlanExpectedFutureEmployerContributionsRemainderOfFiscalYear53.890.2100.088.2214.315.0

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Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-31
Value5400000300400000000078215246
Percentage of DerivativeAssetCollateralObligationToReturnCashOffset100.0100.00.00.00.00.00.0100.00.00.0100.00.00.00.00.00.00.00.00.00.0100.0100.0100.0100.0100.0100.0

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Period End2020-03-312019-12-312019-03-312018-12-31
Value399322280450
Percentage of DerivativeAssetFairValueGrossAssetIncludingNotSubjectToMasterNettingArrangement100.0100.0100.0100.0

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us-gaap:FairValueInputsLevel1, us-gaap:FairValueMeasurementsRecurring



Period End2020-03-312019-12-31
Value196172
Percentage of DerivativeAssetFairValueGrossAssetIncludingNotSubjectToMasterNettingArrangement49.153.4

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Period End2020-03-312019-12-31
Value168114
Percentage of DerivativeAssetFairValueGrossAssetIncludingNotSubjectToMasterNettingArrangement42.135.4

us-gaap:FairValueInputsLevel3, us-gaap:FairValueMeasurementsRecurring



Period End2020-03-312019-12-312019-03-312018-12-31
Value35362333
Percentage of DerivativeAssetFairValueGrossAssetIncludingNotSubjectToMasterNettingArrangement8.811.28.27.3

us-gaap:FairValueByMeasurementFrequency

us-gaap:FairValueMeasurementsRecurring



Period End2020-03-312019-12-312019-03-312018-12-31
Value399322280450
Percentage of DerivativeAssetFairValueGrossAssetIncludingNotSubjectToMasterNettingArrangement100.0100.0100.0100.0

us-gaap:DerivativeAssetFairValueGrossLiability



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
Value213193171267197280206214184186118143157221190275349600143523343550435295510461034827815106413041403
Percentage of DerivativeAssetFairValueGrossLiability100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DerivativeAssetFairValueOffsetAgainstCollateralNetOfNotSubjectToMasterNettingArrangementPolicyElection



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value1791228510074161
Percentage of DerivativeAssetFairValueOffsetAgainstCollateralNetOfNotSubjectToMasterNettingArrangementPolicyElection100.0100.0100.0100.0100.0100.0

us-gaap:DerivativeAssetNotSubjectToMasterNettingArrangement



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-31
Value23710997774454558581712132815412612
Percentage of DerivativeAssetNotSubjectToMasterNettingArrangement100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DerivativeInstrumentRisk

us-gaap:DerivativeAssets

us-gaap:CommodityContract



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value1811259211083170959498125
Percentage of DerivativeAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DerivativeInstrumentRisk, us-gaap:FairValueByMeasurementBasis

us-gaap:CommodityContract, us-gaap:CarryingReportedAmountFairValueDisclosure



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-31
Value181125921108317095125
Percentage of DerivativeAssets100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DerivativeFairValueOfDerivativeAsset



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-31
Value3973192563672714412022382513122843735278281610249837554657108212701244919928120014751621
Percentage of DerivativeFairValueOfDerivativeAsset100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DerivativeFairValueOfDerivativeAssetAmountNotOffsetAgainstCollateral



Period End2020-03-312019-12-312019-03-312018-12-312013-12-312013-09-302013-06-302013-03-312012-12-31
Value1841267416192113136171218
Percentage of DerivativeFairValueOfDerivativeAssetAmountNotOffsetAgainstCollateral100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DerivativeFairValueOfDerivativeLiability



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-31
Value3573072673532753963152962793101902112373342793925178001621249937474570107712361206935941124115231588
Percentage of DerivativeFairValueOfDerivativeLiability100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DerivativeFairValueOfDerivativeLiabilityAmountNotOffsetAgainstCollateral



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312013-12-312013-09-302013-06-302013-03-312012-12-31
Value144114968678116108126177219185
Percentage of DerivativeFairValueOfDerivativeLiabilityAmountNotOffsetAgainstCollateral100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DerivativeInstrumentRisk

us-gaap:DerivativeFairValueOfDerivativeLiabilityAmountOffsetAgainstCollateral

us-gaap:CommodityContract



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value901067584761101077886117
Percentage of DerivativeFairValueOfDerivativeLiabilityAmountOffsetAgainstCollateral100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DerivativeInstrumentRisk, us-gaap:FairValueByMeasurementBasis

us-gaap:CommodityContract, us-gaap:CarryingReportedAmountFairValueDisclosure



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-31
Value90106758476110107117
Percentage of DerivativeFairValueOfDerivativeLiabilityAmountOffsetAgainstCollateral100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DerivativeLiabilityCollateralRightToReclaimCashOffset



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-31
Value56122178102497931612610713228374101126
Percentage of DerivativeLiabilityCollateralRightToReclaimCashOffset100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DerivativeLiabilityFairValueGrossAsset



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
Value213193171267197280206214184186118143157221190275349600143523343550435295510461034827815106413041403
Percentage of DerivativeLiabilityFairValueGrossAsset100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DerivativeLiabilityFairValueGrossLiabilityIncludingNotSubjectToMasterNettingArrangement



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value359311267358281400
Percentage of DerivativeLiabilityFairValueGrossLiabilityIncludingNotSubjectToMasterNettingArrangement100.0100.0100.0100.0100.0100.0

us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency

us-gaap:FairValueInputsLevel1, us-gaap:FairValueMeasurementsRecurring



Period End2020-03-312019-12-31
Value244174
Percentage of DerivativeLiabilityFairValueGrossLiabilityIncludingNotSubjectToMasterNettingArrangement68.055.9

us-gaap:FairValueInputsLevel2, us-gaap:FairValueMeasurementsRecurring



Period End2020-03-312019-12-31
Value102115
Percentage of DerivativeLiabilityFairValueGrossLiabilityIncludingNotSubjectToMasterNettingArrangement28.437.0

us-gaap:FairValueInputsLevel3, us-gaap:FairValueMeasurementsRecurring



Period End2020-03-312019-12-312019-03-312018-12-31
Value13221330
Percentage of DerivativeLiabilityFairValueGrossLiabilityIncludingNotSubjectToMasterNettingArrangement3.67.14.67.5

us-gaap:FairValueByMeasurementFrequency

us-gaap:FairValueMeasurementsRecurring



Period End2020-03-312019-12-312019-03-312018-12-31
Value359311281400
Percentage of DerivativeLiabilityFairValueGrossLiabilityIncludingNotSubjectToMasterNettingArrangement100.0100.0100.0100.0

us-gaap:DerivativeLiabilityFairValueOffsetAgainstCollateralNetOfNotSubjectToMasterNettingArrangementPolicyElection



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value88102757970106
Percentage of DerivativeLiabilityFairValueOffsetAgainstCollateralNetOfNotSubjectToMasterNettingArrangementPolicyElection100.0100.0100.0100.0100.0100.0

us-gaap:DerivativeLiabilityNotSubjectToMasterNettingArrangement



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-31
Value2405643535355127149119910221348299
Percentage of DerivativeLiabilityNotSubjectToMasterNettingArrangement100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

cop:CreditRisk

us-gaap:DerivativeNetLiabilityPositionAggregateFairValue

cop:InEventOfLoweredCreditRating



Period End2020-03-312019-12-312018-12-312017-12-31
Value65796255
Percentage of DerivativeNetLiabilityPositionAggregateFairValue100.0100.0100.0100.0

us-gaap:ReserveQuantitiesByTypeOfReserve, us-gaap:DerivativeInstrumentRisk, us-gaap:Position

us-gaap:DerivativeNonmonetaryNotionalAmount

cop:NaturalGasPowerAndCarbonDioxideEmissionsBasis, us-gaap:CommodityContract, us-gaap:Short



Period End2020-03-312019-12-312019-09-302018-12-31
Value190002300000
Percentage of DerivativeNonmonetaryNotionalAmount100.0100.0100.0100.0

cop:NaturalGasPowerAndCarbonDioxideEmissionsFlatPrice, us-gaap:CommodityContract, us-gaap:Short



Period End2020-03-312019-12-312019-09-302018-12-31
Value0500000
Percentage of DerivativeNonmonetaryNotionalAmount0.021.760.71700.0

us-gaap:DerivativeInstrumentRisk

us-gaap:DerivativeNotionalAmount

cop:BuyBritishPoundSellOtherCurrencies



Period End2020-03-312019-12-31
Value54
Percentage of DerivativeNotionalAmount100.0100.0

cop:SellCanadianDollarBuyUSDollar



Period End2020-03-312019-12-312019-09-302018-12-31
Value441133713471242
Percentage of DerivativeNotionalAmount8820.033425.00.00.0

us-gaap:DerivativeInstrumentRisk, us-gaap:HedgingDesignation

cop:BuyCanadianDollarCurrencySellUnitedStatesCurrency, us-gaap:Nondesignated



Period End2020-03-31
Value900
Percentage of DerivativeNotionalAmount18000.0

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us-gaap:DisposalGroupIncludingDiscontinuedOperationPropertyPlantAndEquipment

us-gaap:OperatingSegments, us-gaap:PrepaidExpensesAndOtherCurrentAssets, cop:AustraliaWestAssets, cop:AsiaPacificAndMiddleEast



Period End2020-03-31
Value1300
Percentage of DisposalGroupIncludingDiscontinuedOperationPropertyPlantAndEquipment100.0

us-gaap:ConsolidationItems, us-gaap:IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperations, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, cop:AustraliaWestAssets, cop:AsiaPacificAndMiddleEast



Period End2020-03-312019-09-30
Value13001200
Percentage of DisposalGroupIncludingDiscontinuedOperationPropertyPlantAndEquipment100.00.0

us-gaap:OperatingSegments, cop:Niobrara, cop:LowerFortyEightSegment



Period End2020-03-312019-12-312019-12-02
Value433426426
Percentage of DisposalGroupIncludingDiscontinuedOperationPropertyPlantAndEquipment33.30.00.0

us-gaap:DueFromRelatedParties



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302016-12-31
Value270339336405402468464528524586583701
Percentage of DueFromRelatedParties100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

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us-gaap:CarryingReportedAmountFairValueDisclosure



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30</