OXY


Line plots across dimensions of each concept
Tables

Table of contents



us-gaap:CommonStockValue

us-gaap:CommonStockSharesOutstanding

us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding

us-gaap:WeightedAverageNumberOfSharesOutstandingBasic

us-gaap:EarningsPerShareBasic

us-gaap:EarningsPerShareDiluted

us-gaap:IncomeLossFromContinuingOperationsPerBasicShare

us-gaap:IncomeLossFromContinuingOperationsPerDilutedShare

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

us-gaap:Revenues
us-gaap:ConsolidationItems
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:CostOfRevenue

us-gaap:CostOfGoodsAndServicesSold

us-gaap:SellingGeneralAndAdministrativeExpense

us-gaap:InterestAndDebtExpense

us-gaap:IncomeLossFromContinuingOperations
us-gaap:ConsolidationItems
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest
us-gaap:ConsolidationItems
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest

us-gaap:NonoperatingIncomeExpense

us-gaap:IncomeTaxExpenseBenefit
us-gaap:ConsolidationItems

us-gaap:ProfitLoss
us-gaap:StatementEquityComponents

us-gaap:ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest

us-gaap:NetIncomeLoss

us-gaap:NetIncomeLossAvailableToCommonStockholdersBasic

us-gaap:Assets

us-gaap:LiabilitiesAndStockholdersEquity

us-gaap:StockholdersEquity

us-gaap:AssetsCurrent

us-gaap:CashAndCashEquivalentsAtCarryingValue

us-gaap:AccountsReceivableNetCurrent

us-gaap:InventoryNet

us-gaap:InventoryFinishedGoods

us-gaap:InventoryLIFOReserve

us-gaap:OtherAssetsCurrent

us-gaap:PropertyPlantAndEquipmentGross
us-gaap:ConsolidationItems
us-gaap:StatementBusinessSegments

us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment

us-gaap:PropertyPlantAndEquipmentNet

us-gaap:LiabilitiesCurrent

us-gaap:LongTermDebtCurrent

us-gaap:AccountsPayableCurrent

us-gaap:LongTermDebt

us-gaap:LongTermDebtNoncurrent

us-gaap:PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent

us-gaap:OtherLiabilitiesNoncurrent

us-gaap:StockholdersEquity

us-gaap:CommonStockValue

us-gaap:RetainedEarningsAccumulatedDeficit

us-gaap:TreasuryStockValue

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetIncomeLoss

us-gaap:ProfitLoss
us-gaap:StatementEquityComponents

us-gaap:DepreciationDepletionAndAmortization

us-gaap:IncreaseDecreaseInInventories

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:PaymentsToAcquirePropertyPlantAndEquipment

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:PaymentsForRepurchaseOfCommonStock

us-gaap:OperatingLeaseRightOfUseAsset
us-gaap:PropertyPlantAndEquipmentByType

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents

oxy:AllOtherRevenues

oxy:CostsAndOtherDeductions

oxy:GainsonSaleofEquityInvestmentsandOtherAssets

oxy:IncreaseDecreaseinCapitalAccrual

oxy:InterestDividendsAndOtherIncome

oxy:IssuanceOfCommonStockAndOtherNet
us-gaap:StatementEquityComponents

oxy:NonCashPortionOfAssetImpairmentAndRelatedItems

oxy:PaymentsForProceedsFromEquityInvestmentsAndOtherNet

oxy:PaymentsForPurchasesOfAssetsAndBusinesses

oxy:PretaxAssetImpairmentAndRelatedItems

oxy:ProceedsfromSaleofAssetsandEquityMethodInvestmentsNet

oxy:PurchasedCommodities

oxy:RevenuesOperatingAndNonoperating

oxy:TransportationAndGatheringExpense
us-gaap:DerivativeInstrumentRisk, us-gaap:HedgingDesignation
srt:AverageSalesPrices
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments
us-gaap:AssetImpairmentCharges
us-gaap:StatementBusinessSegments
us-gaap:StatementGeographical

us-gaap:BusinessCombinationAcquisitionRelatedCosts
us-gaap:BusinessAcquisition
us-gaap:ConsolidationItems

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect

us-gaap:CashProvidedByUsedInInvestingActivitiesDiscontinuedOperations

us-gaap:CashProvidedByUsedInOperatingActivitiesDiscontinuedOperations

us-gaap:CommonStockDividendsPerShareDeclared

us-gaap:DeferredIncomeTaxExpenseBenefit

us-gaap:DefinedBenefitPlanContributionsByEmployer
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanNetPeriodicBenefitCost
us-gaap:DerivativeInstrumentRisk, us-gaap:HedgingDesignation, us-gaap:Position
us-gaap:DerivativeNonmonetaryNotionalAmountVolume

us-gaap:DividendsCommonStockCash
us-gaap:StatementEquityComponents

us-gaap:DividendsPreferredStockCash
us-gaap:StatementEquityComponents

us-gaap:ExplorationAbandonmentAndImpairmentExpense

us-gaap:ExplorationExpense

us-gaap:FinanceLeaseInterestExpense

us-gaap:FinanceLeasePrincipalPayments

us-gaap:FinanceLeaseRightOfUseAssetAmortization

us-gaap:GainLossOnDerivativeInstrumentsNetPretax
us-gaap:ConsolidationItems
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments
us-gaap:DerivativeInstrumentRisk, us-gaap:IncomeStatementLocation

us-gaap:GoodwillImpairmentLoss
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments

us-gaap:IncomeLossFromEquityMethodInvestments

us-gaap:IncomeLossFromEquityMethodInvestmentsNetOfDividendsOrDistributions

us-gaap:IncomeTaxesPaid

us-gaap:IncreaseDecreaseInAccountsPayableAndAccruedLiabilities

us-gaap:IncreaseDecreaseInAccruedIncomeTaxesPayable

us-gaap:IncreaseDecreaseInOtherCurrentAssets

us-gaap:IncreaseDecreaseInReceivables

us-gaap:IncrementalCommonSharesAttributableToShareBasedPaymentArrangements

us-gaap:InterestPaidNet

us-gaap:LeaseCost

us-gaap:NetCashProvidedByUsedInInvestingActivitiesContinuingOperations

us-gaap:NetCashProvidedByUsedInOperatingActivitiesContinuingOperations

us-gaap:OperatingLeaseCost
us-gaap:IncomeStatementLocation

us-gaap:OperatingLeasePayments

us-gaap:OperatingLeasePaymentsUse

us-gaap:OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodNetOfTax

us-gaap:OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodTax

us-gaap:OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossArisingDuringPeriodNetOfTax

us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAfterTax

us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationTax

us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationAfterTax

us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationTax

us-gaap:OtherComprehensiveIncomeLossNetOfTax

us-gaap:OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent
us-gaap:StatementEquityComponents

us-gaap:OtherCostAndExpenseOperating

us-gaap:OtherNoncashIncomeExpense

us-gaap:PaymentsOfDividendsCommonStock

us-gaap:ProceedsFromIncomeTaxRefunds
us-gaap:BusinessAcquisition

us-gaap:ProceedsFromIssuanceOrSaleOfEquity

us-gaap:ProceedsFromPaymentsForOtherFinancingActivities

us-gaap:RedeemablePreferredStockDividends
us-gaap:ProductOrService, us-gaap:RelatedPartyTransactionsByRelatedParty
us-gaap:RelatedPartyTransactionPurchasesFromRelatedParty

us-gaap:ResultsOfOperationsExpenseFromOilAndGasProducingActivities

us-gaap:ShortTermLeaseCost

us-gaap:TaxesExcludingIncomeAndExciseTaxes

us-gaap:UndistributedEarningsLossAllocatedToParticipatingSecuritiesBasic

us-gaap:VariableLeaseCost

oxy:CurrentLiabilitiesAssociatedWithAssetsHeldforSale
us-gaap:Energy, us-gaap:DerivativeInstrumentRisk
oxy:DerivativeContractualCommodityPrice
us-gaap:DisposalGroupClassification, us-gaap:IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperations
oxy:DisposalGroupIncludingDiscontinuedOperationAssetRetirementObligationsNoncurrent
us-gaap:DisposalGroupClassification, us-gaap:IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperations
oxy:DisposalGroupIncludingDiscontinuedOperationAssetsLiabilitiesNet
us-gaap:DisposalGroupClassification, us-gaap:IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperations
oxy:DisposalGroupIncludingDiscontinuedOperationLongtermDebtCurrent
us-gaap:DisposalGroupClassification, us-gaap:IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperations
oxy:DisposalGroupIncludingDiscontinuedOperationLongtermDebtNoncurrent
us-gaap:DisposalGroupClassification, us-gaap:IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperations
oxy:DisposalGroupIncludingDiscontinuedOperationNoncurrentReceivablesandOtherAssetsNet

oxy:EnvironmentalRemediationSitesNumber
us-gaap:EnvironmentalRemediationSite

oxy:LeaseLiability

oxy:LeaseRightofUseAsset

oxy:LongTermReceivablesAndOtherNoncurrentAssetsNet

us-gaap:AccruedEnvironmentalLossContingenciesCurrent
us-gaap:BalanceSheetLocation
us-gaap:EnvironmentalRemediationSite

us-gaap:AccruedEnvironmentalLossContingenciesNoncurrent
us-gaap:BalanceSheetLocation

us-gaap:AccruedLiabilitiesCurrent

us-gaap:AdditionalPaidInCapital

us-gaap:AssetRetirementObligationsNoncurrent

us-gaap:AssetsHeldForSaleNotPartOfDisposalGroupCurrent
us-gaap:DisposalGroupClassification, us-gaap:IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperations
us-gaap:AssetsOfDisposalGroupIncludingDiscontinuedOperation
us-gaap:DerivativeInstrumentRisk
us-gaap:CollateralAlreadyPostedAggregateFairValue
us-gaap:HedgingDesignation

us-gaap:DebtInstrumentFaceAmount
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementBasis
us-gaap:DebtInstrumentFairValue
us-gaap:FairValueByMeasurementBasis

us-gaap:DebtInstrumentUnamortizedPremium

us-gaap:DeferredCreditsAndOtherLiabilitiesNoncurrent

us-gaap:DeferredFinanceCostsNet

us-gaap:DeferredIncomeTaxLiabilitiesNet
us-gaap:BalanceSheetLocation, us-gaap:DerivativeInstrumentRisk
us-gaap:DerivativeAssetFairValueGrossLiabilityAndObligationToReturnCashOffset
us-gaap:BalanceSheetLocation, us-gaap:DerivativeInstrumentRisk
us-gaap:DerivativeAssets
us-gaap:Energy, us-gaap:DerivativeInstrumentRisk, us-gaap:Position
us-gaap:DerivativeAverageCapPrice
us-gaap:DerivativeInstrumentRisk
us-gaap:DerivativeAverageFixedInterestRate
us-gaap:BalanceSheetLocation, us-gaap:DerivativeInstrumentRisk, us-gaap:FairValueByFairValueHierarchyLevel
us-gaap:DerivativeFairValueOfDerivativeAsset
us-gaap:BalanceSheetLocation, us-gaap:DerivativeInstrumentRisk, us-gaap:FairValueByFairValueHierarchyLevel
us-gaap:DerivativeFairValueOfDerivativeLiability
us-gaap:BalanceSheetLocation, us-gaap:DerivativeInstrumentRisk
us-gaap:DerivativeLiabilities
us-gaap:DerivativeInstrumentRisk
us-gaap:DerivativeLiabilityCollateralRightToReclaimCashOffset
us-gaap:DerivativeInstrumentRisk, us-gaap:SubsequentEventType
us-gaap:BalanceSheetLocation, us-gaap:DerivativeInstrumentRisk
us-gaap:DerivativeLiabilityFairValueGrossAssetAndRightToReclaimCashOffset
us-gaap:HedgingDesignation
us-gaap:DerivativeNetLiabilityPositionAggregateFairValue
us-gaap:DerivativeInstrumentRisk
us-gaap:DerivativeNotionalAmount
us-gaap:DerivativeInstrumentRisk, us-gaap:SubsequentEventType
us-gaap:DisposalGroupClassification, us-gaap:IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperations
us-gaap:DisposalGroupIncludingDiscontinuedOperationCashAndCashEquivalents
us-gaap:DisposalGroupClassification, us-gaap:IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperations
us-gaap:DisposalGroupIncludingDiscontinuedOperationDeferredTaxLiabilities
us-gaap:DisposalGroupClassification, us-gaap:IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperations
us-gaap:DisposalGroupIncludingDiscontinuedOperationOtherNoncurrentLiabilities
us-gaap:DisposalGroupClassification, us-gaap:IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperations
us-gaap:DisposalGroupIncludingDiscontinuedOperationPropertyPlantAndEquipmentNoncurrent
us-gaap:BalanceSheetLocation, us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency
us-gaap:EmbeddedDerivativeFairValueOfEmbeddedDerivativeLiability
us-gaap:BalanceSheetLocation, us-gaap:FairValueByMeasurementBasis, us-gaap:FairValueByMeasurementFrequency

us-gaap:EquityMethodInvestments
us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName

us-gaap:FinanceLeaseLiability
us-gaap:PropertyPlantAndEquipmentByType

us-gaap:FinanceLeaseLiabilityCurrent

us-gaap:FinanceLeaseLiabilityNoncurrent

us-gaap:FinanceLeaseRightOfUseAsset

us-gaap:InventoryGross

us-gaap:InventoryRawMaterials
us-gaap:DisposalGroupClassification, us-gaap:IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperations
us-gaap:LiabilitiesOfDisposalGroupIncludingDiscontinuedOperation

us-gaap:OperatingLeaseLiabilityCurrent

us-gaap:OperatingLeaseLiabilityNoncurrent

us-gaap:OtherInventorySupplies

us-gaap:PreferredStockSharesOutstanding

us-gaap:PreferredStockValue

us-gaap:RestrictedCashAndCashEquivalentsAtCarryingValue

us-gaap:RevenueRemainingPerformanceObligation

us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
us-gaap:StatementEquityComponents

us-gaap:TreasuryStockShares

Tables

  2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-312009-09-302009-06-302009-03-31
us-gaap:CommonStockValue ███▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁210209209179179179179179179179179179179178178178178178178178178178178178178178177177177177177177177177NANANA
us-gaap:CommonStockSharesOutstanding ███▇▇▇▇▇▇▇▇▇▇▇▇▁▇▇▇104810441043896896895894894894893893892892892891-891891890890NANANANANANANANANANANANANANANANANANA
us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding 896NA845749750NA763767767NA766765765764763763763766769777782791805805805810811811813813813813813813814814NA
us-gaap:WeightedAverageNumberOfSharesOutstandingBasic 896NA845748748NA761765765NA765764764764763763763766769777782791805804804809810810812812812812812812811811NA
us-gaap:EarningsPerShareBasic ▁▂▃▆▆▆█▆▆-2.49-1.67-1.080.840.840.94000000000000042.441.10.92NA0.250.660.15-0.32-0.180.1-3.420.23-0.281.551.831.751.961.641.681.691.641.922.172.231.91.461.311.311.140.840.45
us-gaap:EarningsPerShareDiluted ▁▂▃▆▆▆█▆▆-2.49-1.67-1.080.840.840.93999999999999952.441.10.92NA0.250.660.15-0.32-0.180.1-3.420.23-0.281.551.821.751.961.641.681.691.641.922.172.231.91.461.311.311.140.840.45
us-gaap:IncomeLossFromContinuingOperationsPerBasicShare ▁▅█-2.49-1.67-1.06NA0.840.94000000000000042.44NANANA0.250.660.15-0.31-0.18-0.47-3.410.23-0.281.551.831.751.971.651.691.71.641.922.182.231.721.471.311.321.140.840.45
us-gaap:IncomeLossFromContinuingOperationsPerDilutedShare ▁▅█-2.49-1.67-1.06NA0.840.93999999999999952.44NANANA0.250.660.15-0.31-0.18-0.47-3.410.23-0.281.551.821.751.971.641.691.71.641.922.182.231.721.471.311.321.140.840.45
  2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-312009-09-302009-06-302009-03-31
us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax ▆▅▇▃▄▇▄▄▃▃▂▂▂▂▁▁▃▃▂▅█▇█▇▇▇▇█▇█▇▅▅▅▄▃▂5047456356873731400460114257383136943492299930602957273325582281324635143096493062756088644959625872596557686268600661735726489647614771410436873073
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ProductOrService,us-gaap:StatementBusinessSegments srt:OilReserves,oxy:OilAndGasSegment▆█▆▂▁▂▃▂▁335139573313248420982284253922322190NANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ProductOrService,us-gaap:StatementGeographical,us-gaap:StatementBusinessSegments srt:OilReserves,country:US,oxy:OilAndGasSegment▆█▅▂▁▁▁▁▁275533062453144712051218132613341247NANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:StatementBusinessSegments oxy:ChemicalSegment▁▁▄▂▄▇██▆961971106199310551141118411701122NANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:StatementBusinessSegments oxy:OilAndGasSegment▆█▅▂▁▂▃▂▁389847153746271823512567288925312454NANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:StatementGeographical country:US▅█▅▁▁▃▂▁▁443958474420260924513271270326192462NANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:StatementGeographical us-gaap:MiddleEast▁▂▄▅▅▇█▄▅6537219081052100511621281960985NANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:StatementGeographical,us-gaap:StatementBusinessSegments country:US,oxy:ChemicalSegment▁▁▄▂▄▇██▆91092110099359931069111211021049NANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:StatementGeographical,us-gaap:StatementBusinessSegments country:US,oxy:OilAndGasSegment▆█▅▂▁▁▂▁▁316239082737153813091350151514911391NANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:StatementGeographical,us-gaap:StatementBusinessSegments us-gaap:MiddleEast,oxy:OilAndGasSegment▁▂▄▆▅▆█▄▅58264282796390310451173856889NANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:Revenues ▆█▅▄▂▁▅▃▃▂▂▂▂▂▁▁▂▃▂▄▆▆▆▆▅▆▅▆▆▆▅▄▄▄▃▃▂6410799652314420343524985216408337633492299930602957273325582281324635143096493062756088644959625872596557686268600661735726489647614771410436873073
 us-gaap:Revenues us-gaap:ConsolidationItems,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,oxy:Chemical▂▃▅▃▄▆▇▇▆▄▅▆▅▃▁▁▃▄▃███▇▇▇▆96297410719981059114211851176115410601071115610689889088901008103010001232124212201200118711751119NANANANANANANANANANANA
 us-gaap:Revenues us-gaap:ConsolidationItems,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,oxy:MidstreamAndMarketing▄█▄▅▄▆▇▃▂▂▂▂▁▁▁▁▁▂▁▂▃▂▂▂▂▂790162778090981612971367603389410266270211202141133231294197362530435442269453389NANANANANANANANANANANA
 us-gaap:Revenues us-gaap:ConsolidationItems,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,us-gaap:OilAndGas█▇▆▃▂▃▃▃▂▂▁▁485745333821271823512567288925312454226318651848NANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:CostOfRevenue ▁▂▂██▂▂██6127457411386134570572213651350NANANANANANANANANA2586338532973198321431803137317630602950287927202526244424322442213020592064
us-gaap:CostOfGoodsAndServicesSold ▁▂▂██▂▂██6127457411386134570572213651350NANANANANANANANANA2586338532973198321431803137317630602950287927202526244424322442213020592064
us-gaap:SellingGeneralAndAdministrativeExpense 260NANANA140NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:InterestAndDebtExpense ▆█▇▂▁▁▁▁▁3524343811539899969797NA918681688860488301418202930343628302527215263238403227
us-gaap:IncomeLossFromContinuingOperations -2013NA-737NA6317061869NANANANANANANANANA-2606180-215121114321387158813271359137913321560177518191405119610691097929684NA
 us-gaap:IncomeLossFromContinuingOperations us-gaap:ConsolidationItems,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,oxy:Chemical186NA207NA265NA321NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:IncomeLossFromContinuingOperations us-gaap:ConsolidationItems,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,us-gaap:OilAndGas179NA221NA484NA767NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest ▁▆█-2095-990-621NA8568322579NANANA275792195-268-232-563-3051NANANANANANANANANANANANANANANANANANANANA
 us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest us-gaap:ConsolidationItems,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,oxy:Chemical186NA207NA265NA321NANANA20023017011788214272NANANANANANANANANANANANANANANANANANANANA
 us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest us-gaap:ConsolidationItems,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,us-gaap:OilAndGas179NA221NA484NA767NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest ▁▆█-2013-1036-737NA6317061869NANANA190507117-238-136-360-2606180-215121414351389158813271359137913321560177518191405121810811095943696380
us-gaap:NonoperatingIncomeExpense ▁█▆-71836571NA7310387NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:IncomeTaxExpenseBenefit ▁▂▃▄▄▃█▄▅-8246116306225126710302339NA8528578-30-96-203-445324-1981795793210379018448558751139108711111054816800729549455241
us-gaap:ProfitLoss ▁▃▃▆▆▆█▆▆-2013-1036-7526356317061869848708NA190507117-241-13978-2609176-218121114341392158313221355NANANA177118171549121310751088941694377
us-gaap:ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest ▁██-2126-925-900NA6356892022NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:NetIncomeLoss ▁▃▃▆▆▆█▆▆-2232-1339-9126356317061869848708NA190507117-241-13978-2609176-218120814311390158313221355137513281559177118171549119110631064927682368
us-gaap:NetIncomeLossAvailableToCommonStockholdersBasic ▁▃▃▆▆▆█▆▆-2232-1338-9126326287051861843705NA189505117-241-13978-2609176-218120514281388157913191353137213261556176718141546118910621063926681NA
  2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-312009-09-302009-06-302009-03-31
us-gaap:Assets ▆▇█▁▁▁▁▁▁▁▁▁▁▁▁▁▂▂▂▄▃▃▃▃▃▃▃▃▂▂▂▂▁▁10164310933012544344770443804385444957440674280842026414434198242465416304239542018500895436953389715107029369275694376742265824656256428361622572445459554065475034625945531NANANA
us-gaap:LiabilitiesAndStockholdersEquity ▆▇█▁▁▁▁▁▁▁▁▁▁▁▁▁▂▂▂▄▃▃▃▃▃▃▃▃▂▂▂▂▁▁10164310933012544344770443804385444957440674280842026414434198242465416304239542018500895436953389715107029369275694376742265824656256428361622572445459554065475034625945531NANANA
us-gaap:StockholdersEquity ▇██▅▅▁▅3129534232360802134721236-17221489NANA20572NANANANANANANANANA434794328942998427904175340882404743955038747364793516033658317083079829935NANANA
  2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-312009-09-302009-06-302009-03-31
us-gaap:AssetsCurrent ▅▇█▂▂▂▃▃▂▂▁▂▂▂▂▂▃▃▃▃▃▃▃▃▃▃▄▃▃▂▃▂▂▂14109186812094494259270993211112109908894827070458075823887118972823710540110081043410507107861089911938108591015411909121331198711376994310591892291899088NANANA
us-gaap:CashAndCashEquivalentsAtCarryingValue ▃▅█▂▂▅▄▁▂▂▂▃▂▅▆▅▄▄▃▄▃▃▆▅▃▆▇▆▆▃▃▃▃▂▂▂▁2021303248401751175230332954136216061672180622181494318037513176254727562153289723912332377130692140376044103760403919942100210923221895160817551126
us-gaap:AccountsReceivableNetCurrent ▁█▇▆▆▅▇▆▆▄▃▄▄▃▂▂▃▄▂▅▇▆▇▆▆▆▅▇▅▇▇▄▄▅2458637358545273530048936000552151844145374939134316352131132780350739733068496058265233565352214995535449595712482955426009436743354616NANANA
us-gaap:InventoryNet ▆▆██▇▅▂▅▃▄▂▁▂▁▁▂▃▃▃▆▅▅▅▅▅▅▇▄▄▄▃▃▄▃143614471601158214841260100913471057124610079201005927906997112211201133135913231308132813401306129714991250124912021091112712201066NANANA
us-gaap:InventoryFinishedGoods ▂▃▄██▅▃▆▃▅▂▂▃▁▁▂▃▂▃▅▄▄▅▅▄▅█▆▅▅▄▄▅5055336651030990788549858562776519429526397381466541497533713693688708725690745998803794772668661738NANANANA
us-gaap:InventoryLIFOReserve ▂▂▂▂▂▂▂▂▂▂▁▂▁▃▃▃▇▇▇▇▇▇██████▅▅▅▆▆404047474747434543433541395050508989909191911011011019898987272728181NANANANA
us-gaap:OtherAssetsCurrent ▃▂█▁▁▁▂▂▁▁▁▁▂▂▂▂▁▁▁▂▂▂▂▂▂222013236445819724746114910967127334834661261108312021284890777815129112461201118612291713NANANANANANANANANANANANA
  2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-312009-09-302009-06-302009-03-31
us-gaap:PropertyPlantAndEquipmentGross ▂▁█123462122347136925NANA74420NANANA70246NANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:PropertyPlantAndEquipmentGross us-gaap:StatementBusinessSegments oxy:OilAndGasSegment▃▁█107014105881110668NANA58799NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment ▇▇█▇▇▇▇▆▆▆▆▅▆▇▇▆▅▅▅▅▅▅▄▄▃▃▂▂▂▁▁▁▁▁44389418784680444889439134298341825407823991839072382503733037607420764121240138366123689735870363063500133746318443053629266269342580524743229962210021296220462120520345NANANA
us-gaap:PropertyPlantAndEquipmentNet ▇▇█▁▁▁▁▁▁▁▁▁▁▁▁▁▂▂▂▄▄▄▄▄▄▃▃▃▂▂▂▂▁▁79073804699012132115319003143731155304323134431174320653146632005304193103831505368354047840109584655713456044550275394952981509634939746903430254179540598359743451433864NANANA
  2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-312009-09-302009-06-302009-03-31
us-gaap:LiabilitiesCurrent ▅▇█▃▃▂▃▃▂▂▂▂▂▁▁▂▂▃▂▄▃▃▃▃▃▃▃▃▂▃▄▂▂▂1196314949156977880753774128372807870707400636263916852568852676826743378256915952188698190884282347786783478878098700480939391629860626440NANANA
us-gaap:LongTermDebtCurrent █▁▁▁▁▁▁24645131116116116116NANA500NANANANANA2000NANANANANANANANANANANANANANANANANANANANANA
us-gaap:AccountsPayableCurrent ▃██▅▅▄▅▅▅▄▃▃▃▂▂▁▃▃▃▅▆▅▆▅▄▅▅▆▄▅▅▃▃▃3845701767895445526148855443541250594408373438254071339231262801372741453867551160975423567152744889550454535522459550305076383239524071NANANA
  2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-312009-09-302009-06-302009-03-31
us-gaap:LongTermDebt ▁█3852238588NA104001040010400104001040010400990098009800980083008300760083008300NANANANANANANANANANANANANANANANANANANA
us-gaap:LongTermDebtNoncurrent ▆▇█▂▂▂▂▂▂▂▂▂▂▂▂▁▂▂▂▂▂▂▂▂▂▂▂▂▂▁▁▁▁▁3605838537475831015510203102011019810312103099328932693249322833383315608688268806139683768356877696170267024762276205873587037493748251225112511NANANA
us-gaap:PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent █▇█▁▁▁▁▂▂▂196818071927819816809828101010081005NANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:OtherLiabilitiesNoncurrent █▆▆▁▁▁▁▁▁▁▇▇▇▆▇▇▅▅▅▆▆▆▆▆▆▆▆▆▅▆▆▅▅▅47433814356697710201009915102310631171410841714181390240504153331332093224343334643441361836543764358435823701329534843432327933273176NANANA
  2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-312009-09-302009-06-302009-03-31
us-gaap:StockholdersEquity ▇██▅▅▁▅3129534232360802134721236-17221489NANA20572NANANANANANANANANA434794328942998427904175340882404743955038747364793516033658317083079829935NANANA
us-gaap:CommonStockValue ███▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁210209209179179179179179179179179179179178178178178178178178178178178178178178177177177177177177177177NANANA
us-gaap:RetainedEarningsAccumulatedDeficit ▁▂▂▃▃▃▃▂▂▂▂▂▂▃▃▃▅▆▆███▇▇▇▆▆▆▅▅▅▄▄▄17229201802222723848237952375023635223612210721935220322243522513238362466125375317123489635294441664351942652407003963438829380893715236262338823248531043289642808327329NANANA
us-gaap:TreasuryStockValue ██████▇▇▆▆▆▆▆▆▆▆▆▆▆▅▅▄▂▂▂▂▂▁▁▁▁▁▁▁10653106531065310653106531047310162926891689168915491499143914391369128911391078734814676817079514851135091471046604517443442714241417241724161NANANA
us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax ▅▇▅▇███▅▅▆▇▆▆▆▅▅▁▅▇▆▆▆▃▃▂▂▂▂▃▃▂▃▂▁-334-221-332-184-168-172-154-308-312-258-238-252-253-294-299-304-559-316-206-289-291-296-448-456-502-481-490-488-419-452-522-443-483-548NANANA
  2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-312009-09-302009-06-302009-03-31
us-gaap:NetCashProvidedByUsedInOperatingActivities ▃▆█▆▁█13392009240520139482500NANA1009NANANA652NANA689NANA561NANA2697NANA2712NANA2765NANA2222NANA2210NANA780
us-gaap:NetCashProvidedByUsedInInvestingActivities ██▁███-1530-1301-25023-1288-1415-1506NANA-971NANANA-819NANA-637NANA-2206NANA-2373NANA-2195NANA-2415NANA-1741NANA-1054NANA-1167
us-gaap:NetCashProvidedByUsedInFinancingActivities ▁▁█▁▁▁-1019-249926232-726-814-915NANA-104NANANA-572NANA-77NANA9NANA-1385NANA31NANA-371NANA-959NANA-491NANA-264
  2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-312009-09-302009-06-302009-03-31
us-gaap:NetCashProvidedByUsedInOperatingActivities ▃▆█▆▁█13392009240520139482500NANA1009NANANA652NANA689NANA561NANA2697NANA2712NANA2765NANA2222NANA2210NANA780
us-gaap:NetIncomeLoss ▁▃▃▆▆▆█▆▆-2232-1339-9126356317061869848708NA190507117-241-13978-2609176-218120814311390158313221355137513281559177118171549119110631064927682368
us-gaap:ProfitLoss ▁▃▃▆▆▆█▆▆-2013-1036-7526356317061869848708NA190507117-241-13978-2609176-218121114341392158313221355NANANA177118171549121310751088941694377
us-gaap:DepreciationDepletionAndAmortization ██▅▂▁▂▂▁▁224222711706103197310861023947921NA995989942104610701102112311161029105610241266NANA1259NANA1085NANA890NANA874NANA786
us-gaap:IncreaseDecreaseInInventories 70NANANA221NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
  2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-312009-09-302009-06-302009-03-31
us-gaap:NetCashProvidedByUsedInInvestingActivities ██▁███-1530-1301-25023-1288-1415-1506NANA-971NANANA-819NANA-637NANA-2206NANA-2373NANA-2195NANA-2415NANA-1741NANA-1054NANA-1167
us-gaap:PaymentsToAcquirePropertyPlantAndEquipment ▂█▅▁▁▂129321711714121112591337NANA1032NANANA722NANA646NANA1675NANA2269NANA2070NANA2412NANA1325NANA848NANA1071
  2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-312009-09-302009-06-302009-03-31
us-gaap:NetCashProvidedByUsedInFinancingActivities ▁▁█▁▁▁-1019-249926232-726-814-915NANA-104NANANA-572NANA-77NANA9NANA-1385NANA31NANA-371NANA-959NANA-491NANA-264
us-gaap:PaymentsForRepurchaseOfCommonStock ▁▁▁▁▆█0000237340NANA0NANANANANANA7NANA207NANA946NANA6NANA15NANA13NANANANANANA
  2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-312009-09-302009-06-302009-03-31

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
Value210209209179179179179179179179179179179178178178178178178178178178178178178178178178178178178177177177177177177177177177177177176
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 Assets0.20.20.20.40.40.40.40.40.40.40.40.40.40.40.40.40.40.40.40.30.30.30.20.30.30.30.30.30.30.30.30.30.30.30.30.30.30.30.40.40.40.40.4

Common Stock Par Or Stated Value Per Share

Common Stock Shares Issued

Common Stock Shares Outstanding

us-gaap:CommonStockSharesOutstanding



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-312008-12-312007-12-31
Value104810441043896896895894894894893893892892892892891-891891891890890890889888886885883881877
Percentage of CommonStockSharesOutstanding100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Common Stock Shares Authorized

Weighted Average Number Of Diluted Shares Outstanding

us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-312009-09-302009-06-30
Value896845749750763767767766765765764763763763766769777782791805805805810811811813813813813813813814814
Percentage of WeightedAverageNumberOfDilutedSharesOutstanding100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Weighted Average Number Of Shares Outstanding Basic

us-gaap:WeightedAverageNumberOfSharesOutstandingBasic



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-312009-09-302009-06-30
Value896845748748761765765765764764764763763763766769777782791805804804809810810812812812812812812811811
Percentage of WeightedAverageNumberOfSharesOutstandingBasic100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Earnings Per Share Basic

us-gaap:EarningsPerShareBasic



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-312009-09-302009-06-302009-03-31
Value-2.49-1.67-1.080.840.840.94000000000000042.441.10.920.250.660.15-0.32-0.180.1-3.420.23-0.281.551.831.751.961.641.681.691.641.922.172.231.91.461.311.311.140.840.45
Percentage of EarningsPerShareBasic100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Earnings Per Share Diluted

us-gaap:EarningsPerShareDiluted



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-312009-09-302009-06-302009-03-31
Value-2.49-1.67-1.080.840.840.93999999999999952.441.10.920.250.660.15-0.32-0.180.1-3.420.23-0.281.551.821.751.961.641.681.691.641.922.172.231.91.461.311.311.140.840.45
Percentage of EarningsPerShareDiluted100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Income Loss From Continuing Operations Per Basic Share

us-gaap:IncomeLossFromContinuingOperationsPerBasicShare



Period End2020-03-312019-12-312019-09-302019-03-312018-12-312018-09-302017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-312009-09-302009-06-302009-03-31
Value-2.49-1.67-1.060.840.94000000000000042.440.250.660.15-0.31-0.18-0.47-3.410.23-0.281.551.831.751.971.651.691.71.641.922.182.231.721.471.311.321.140.840.45
Percentage of IncomeLossFromContinuingOperationsPerBasicShare100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Income Loss From Continuing Operations Per Diluted Share

us-gaap:IncomeLossFromContinuingOperationsPerDilutedShare



Period End2020-03-312019-12-312019-09-302019-03-312018-12-312018-09-302017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-312009-09-302009-06-302009-03-31
Value-2.49-1.67-1.060.840.93999999999999952.440.250.660.15-0.31-0.18-0.47-3.410.23-0.281.551.821.751.971.641.691.71.641.922.182.231.721.471.311.321.140.840.45
Percentage of IncomeLossFromContinuingOperationsPerDilutedShare100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Revenue From Contract With Customer Excluding Assessed Tax

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-312009-09-302009-06-302009-03-31
Value5047456356873731400460114257383136943492299930602957273325582281324635143096493062756088644959625872596557686268600661735726489647614771410436873073
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ConsolidationItems

us-gaap:IntersegmentElimination



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value-199-469-368-205-222-244-225-227-234
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-3.9-10.3-6.5-5.5-5.5-4.1-5.3-5.9-6.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-3.9-10.3-6.5-5.5-5.5-4.1-5.3-5.9-6.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:IntersegmentElimination100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ConsolidationItems, us-gaap:ProductOrService, us-gaap:StatementBusinessSegments

us-gaap:IntersegmentElimination, oxy:Marketing, oxy:MidstreamSegment



Period End2020-03-31
Value0.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:IntersegmentElimination oxy:Marketing oxy:MidstreamSegment0.0

us-gaap:ConsolidationItems, us-gaap:StatementGeographical

us-gaap:IntersegmentElimination, country:US



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value00000686-225-227-234
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.00.00.00.00.011.4-5.3-5.9-6.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.00.00.00.00.011.4-5.3-5.9-6.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:IntersegmentElimination country:US0.00.00.00.00.0100.0100.0100.0100.0

us-gaap:ProductOrService, us-gaap:StatementBusinessSegments

oxy:GasProcessing, oxy:MidstreamSegment



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value176172174193207258256235233
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax3.53.83.15.25.24.36.06.16.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax3.53.83.15.25.24.36.06.16.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax oxy:GasProcessing oxy:MidstreamSegment100.0100.0100.0100.0100.0100.0100.0100.0100.0

oxy:Marketing, oxy:MidstreamSegment



Period End2020-03-31
Value195
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax3.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax3.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax oxy:Marketing oxy:MidstreamSegment100.0

oxy:PowerAndOther, oxy:MidstreamSegment



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value16-413235324435351925
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.3-9.14.10.91.10.60.80.50.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.3-9.14.10.91.10.60.80.50.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax oxy:PowerAndOther oxy:MidstreamSegment100.0100.0100.0100.0100.0100.0100.0100.0100.0

srt:NaturalGasLiquidsReserves, oxy:OilAndGasSegment



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value268386240152143160216175140
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax5.38.54.24.13.62.75.14.63.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax5.38.54.24.13.62.75.14.63.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:NaturalGasLiquidsReserves oxy:OilAndGasSegment100.0100.0100.0100.0100.0100.0100.0100.0100.0

srt:NaturalGasReserves, oxy:OilAndGasSegment



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value26833620889130124132118121
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax5.37.43.72.43.22.13.13.13.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax5.37.43.72.43.22.13.13.13.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:NaturalGasReserves oxy:OilAndGasSegment100.0100.0100.0100.0100.0100.0100.0100.0100.0

srt:OilReserves, oxy:OilAndGasSegment



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value335139573313248420982284253922322190
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax66.486.758.366.652.438.059.658.359.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax66.486.758.366.652.438.059.658.359.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:OilReserves oxy:OilAndGasSegment100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProductAndServiceOther, oxy:OilAndGasSegment



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value1136-15-7-20-1263
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.20.8-0.3-0.2-0.5-0.00.00.20.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.20.8-0.3-0.2-0.5-0.00.00.20.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ProductAndServiceOther oxy:OilAndGasSegment100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProductOrService, us-gaap:StatementGeographical, us-gaap:StatementBusinessSegments

oxy:GasProcessing, country:US, oxy:MidstreamSegment



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value1059393104105141148131137
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax2.12.01.62.82.62.33.53.43.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax2.12.01.62.82.62.33.53.43.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax oxy:GasProcessing country:US oxy:MidstreamSegment100.0100.0100.0100.0100.0100.0100.0100.0100.0

oxy:GasProcessing, us-gaap:MiddleEast, oxy:MidstreamSegment



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value7179818910211710810496
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.41.71.42.42.51.92.52.72.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.41.71.42.42.51.92.52.72.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax oxy:GasProcessing us-gaap:MiddleEast oxy:MidstreamSegment100.0100.0100.0100.0100.0100.0100.0100.0100.0

oxy:Marketing, country:US, oxy:MidstreamSegment



Period End2020-03-31
Value246
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax4.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax4.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax oxy:Marketing country:US oxy:MidstreamSegment100.0

oxy:Marketing, oxy:OtherCountriesExcludingUsMiddleEastLatinAmerica, oxy:MidstreamSegment



Period End2020-03-31
Value-51
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-1.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-1.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax oxy:Marketing oxy:OtherCountriesExcludingUsMiddleEastLatinAmerica oxy:MidstreamSegment100.0

oxy:Marketing, srt:LatinAmerica, oxy:MidstreamSegment



Period End2020-03-31
Value0.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax oxy:Marketing srt:LatinAmerica oxy:MidstreamSegment0.0

oxy:Marketing, us-gaap:MiddleEast, oxy:MidstreamSegment



Period End2020-03-31
Value0.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax oxy:Marketing us-gaap:MiddleEast oxy:MidstreamSegment0.0

oxy:PowerAndOther, country:US, oxy:MidstreamSegment



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value16-104198324435351925
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.3-2.33.50.91.10.60.80.50.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.3-2.33.50.91.10.60.80.50.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax oxy:PowerAndOther country:US oxy:MidstreamSegment100.0100.0100.0100.0100.0100.0100.0100.0100.0

oxy:PowerAndOther, oxy:OtherCountriesExcludingUsMiddleEastLatinAmerica, oxy:MidstreamSegment



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value0-3737000000
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.0-0.80.70.00.00.00.00.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.0-0.80.70.00.00.00.00.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax oxy:PowerAndOther oxy:OtherCountriesExcludingUsMiddleEastLatinAmerica oxy:MidstreamSegment0.0100.0100.00.00.00.00.00.00.0

oxy:PowerAndOther, us-gaap:MiddleEast, oxy:MidstreamSegment



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value0-2720000000
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.0-6.00.00.00.00.00.00.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.0-6.00.00.00.00.00.00.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax oxy:PowerAndOther us-gaap:MiddleEast oxy:MidstreamSegment0.0100.00.00.00.00.00.00.00.0

srt:NaturalGasLiquidsReserves, country:US, oxy:OilAndGasSegment



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value21331917784789113911189
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax4.27.03.12.31.91.53.32.92.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax4.27.03.12.31.91.53.32.92.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:NaturalGasLiquidsReserves country:US oxy:OilAndGasSegment100.0100.0100.0100.0100.0100.0100.0100.0100.0

srt:NaturalGasLiquidsReserves, us-gaap:MiddleEast, oxy:OilAndGasSegment



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value556763686569776451
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.11.51.11.81.61.11.81.71.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.11.51.11.81.61.11.81.71.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:NaturalGasLiquidsReserves us-gaap:MiddleEast oxy:OilAndGasSegment100.0100.0100.0100.0100.0100.0100.0100.0100.0

srt:NaturalGasReserves, country:US, oxy:OilAndGasSegment



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value18324412584744474252
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax3.65.32.20.21.20.71.11.11.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax3.65.32.20.21.20.71.11.11.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:NaturalGasReserves country:US oxy:OilAndGasSegment100.0100.0100.0100.0100.0100.0100.0100.0100.0

srt:NaturalGasReserves, srt:LatinAmerica, oxy:OilAndGasSegment



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value565544534
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.10.10.10.10.10.10.10.10.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.10.10.10.10.10.10.10.10.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:NaturalGasReserves srt:LatinAmerica oxy:OilAndGasSegment100.0100.0100.0100.0100.0100.0100.0100.0100.0

srt:NaturalGasReserves, us-gaap:MiddleEast, oxy:OilAndGasSegment



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value808678767976807365
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.61.91.42.02.01.31.91.91.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.61.91.42.02.01.31.91.91.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:NaturalGasReserves us-gaap:MiddleEast oxy:OilAndGasSegment100.0100.0100.0100.0100.0100.0100.0100.0100.0

srt:OilReserves, country:US, oxy:OilAndGasSegment



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value275533062453144712051218132613341247
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax54.672.543.138.830.120.331.134.833.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax54.672.543.138.830.120.331.134.833.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:OilReserves country:US oxy:OilAndGasSegment100.0100.0100.0100.0100.0100.0100.0100.0100.0

srt:OilReserves, srt:LatinAmerica, oxy:OilAndGasSegment



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value149159177212135168197180170
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax3.03.53.15.73.42.84.64.74.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax3.03.53.15.73.42.84.64.74.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:OilReserves srt:LatinAmerica oxy:OilAndGasSegment100.0100.0100.0100.0100.0100.0100.0100.0100.0

srt:OilReserves, us-gaap:MiddleEast, oxy:OilAndGasSegment



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value4474926838257588981016718773
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax8.910.812.022.118.914.923.918.720.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax8.910.812.022.118.914.923.918.720.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:OilReserves us-gaap:MiddleEast oxy:OilAndGasSegment100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProductAndServiceOther, country:US, oxy:OilAndGasSegment



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value1139-18-1-21-3343
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.20.9-0.3-0.0-0.5-0.00.10.10.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.20.9-0.3-0.0-0.5-0.00.10.10.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ProductAndServiceOther country:US oxy:OilAndGasSegment100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProductAndServiceOther, srt:LatinAmerica, oxy:OilAndGasSegment



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value0.00.00.00.00.00.0-1000000.01000000.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.00.00.00.00.00.0-0.00.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.00.00.00.00.00.0-0.00.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ProductAndServiceOther srt:LatinAmerica oxy:OilAndGasSegment0.00.00.00.00.00.0100.0100.00.0

us-gaap:ProductAndServiceOther, us-gaap:MiddleEast, oxy:OilAndGasSegment



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value0-33-612010
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.0-0.10.1-0.20.00.00.00.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.0-0.10.1-0.20.00.00.00.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ProductAndServiceOther us-gaap:MiddleEast oxy:OilAndGasSegment0.0100.0100.0100.0100.0100.00.0100.00.0

us-gaap:StatementBusinessSegments

oxy:ChemicalSegment



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value961971106199310551141118411701122
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax19.021.318.726.626.319.027.830.530.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax19.021.318.726.626.319.027.830.530.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax oxy:ChemicalSegment100.0100.0100.0100.0100.0100.0100.0100.0100.0

oxy:MidstreamSegment



Period End2020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value387409225251283409357352
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax7.77.26.06.34.79.69.39.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax7.77.26.06.34.79.69.39.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax oxy:MidstreamSegment100.0100.0100.0100.0100.0100.0100.0100.0

oxy:OilAndGasSegment



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value389847153746271823512567288925312454
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax77.2103.365.972.858.742.767.966.166.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax77.2103.365.972.858.742.767.966.166.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax oxy:OilAndGasSegment100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StatementGeographical

country:US



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value443958474420260924513271270326192462
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax88.0128.177.769.961.254.463.568.466.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax88.0128.177.769.961.254.463.568.466.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax country:US100.0100.0100.0100.0100.0100.0100.0100.0100.0

oxy:OtherCountriesExcludingUsMiddleEastLatinAmerica



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value-35-2353181921211721
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.7-0.50.90.50.50.30.50.40.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.7-0.50.90.50.50.30.50.40.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax oxy:OtherCountriesExcludingUsMiddleEastLatinAmerica100.0100.0100.0100.0100.0100.0100.0100.0100.0

srt:LatinAmerica



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value189201218257182223252235226
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax3.74.43.86.94.53.75.96.16.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax3.74.43.86.94.53.75.96.16.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:LatinAmerica100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:MiddleEast



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value6537219081052100511621281960985
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax12.915.816.028.225.119.330.125.126.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax12.915.816.028.225.119.330.125.126.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:MiddleEast100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StatementGeographical, us-gaap:StatementBusinessSegments

country:US, oxy:ChemicalSegment



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value91092110099359931069111211021049
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax18.020.217.725.124.817.826.128.828.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax18.020.217.725.124.817.826.128.828.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax country:US oxy:ChemicalSegment100.0100.0100.0100.0100.0100.0100.0100.0100.0

country:US, oxy:MidstreamSegment



Period End2020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value367291136149166301253256
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax7.35.13.63.72.87.16.66.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax7.35.13.63.72.87.16.66.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax country:US oxy:MidstreamSegment100.0100.0100.0100.0100.0100.0100.0100.0

country:US, oxy:OilAndGasSegment



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value316239082737153813091350151514911391
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax62.785.648.141.232.722.535.638.937.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax62.785.648.141.232.722.535.638.937.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax country:US oxy:OilAndGasSegment100.0100.0100.0100.0100.0100.0100.0100.0100.0

oxy:OtherCountriesExcludingUsMiddleEastLatinAmerica, oxy:ChemicalSegment



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value161416181921211721
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.30.30.30.50.50.30.50.40.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.30.30.30.50.50.30.50.40.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax oxy:OtherCountriesExcludingUsMiddleEastLatinAmerica oxy:ChemicalSegment100.0100.0100.0100.0100.0100.0100.0100.0100.0

oxy:OtherCountriesExcludingUsMiddleEastLatinAmerica, oxy:MidstreamSegment



Period End2020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value-5137000000
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-1.00.70.00.00.00.00.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-1.00.70.00.00.00.00.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax oxy:OtherCountriesExcludingUsMiddleEastLatinAmerica oxy:MidstreamSegment100.0100.00.00.00.00.00.00.0

srt:LatinAmerica, oxy:ChemicalSegment



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value353636404351515152
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.70.80.61.11.10.81.21.31.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.70.80.61.11.10.81.21.31.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:LatinAmerica oxy:ChemicalSegment100.0100.0100.0100.0100.0100.0100.0100.0100.0

srt:LatinAmerica, oxy:OilAndGasSegment



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value154165182217139172201184174
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax3.13.63.25.83.52.94.74.84.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax3.13.63.25.83.52.94.74.84.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:LatinAmerica oxy:OilAndGasSegment100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:MiddleEast, oxy:MidstreamSegment



Period End2020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value71818910211710810496
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.41.42.42.51.92.52.72.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.41.42.42.51.92.52.72.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:MiddleEast oxy:MidstreamSegment100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:MiddleEast, oxy:OilAndGasSegment



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value58264282796390310451173856889
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax11.514.114.525.822.617.427.622.324.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax11.514.114.525.822.617.427.622.324.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:MiddleEast oxy:OilAndGasSegment100.0100.0100.0100.0100.0100.0100.0100.0100.0

Revenues

us-gaap:Revenues



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-312009-09-302009-06-302009-03-31
Value6410799652314420343524985216408337633492299930602957273325582281324635143096493062756088644959625872596557686268600661735726489647614771410436873073
Percentage of Revenues100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax127.0175.292.0118.585.841.6122.5106.6101.9100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ConsolidationItems

oxy:CorporateReconcilingItemsAndEliminations



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-30
Value-199-469-368-205-222-244-225-227-234-241-203-214-216-202-143-175-177
Percentage of Revenues-3.1-5.9-7.0-4.6-6.5-9.8-4.3-5.6-6.2-6.9-6.8-7.0-7.3-7.4-5.6-7.7-5.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-3.9-10.3-6.5-5.5-5.5-4.1-5.3-5.9-6.3-6.9-6.8-7.0-7.3-7.4-5.6-7.7-5.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax oxy:CorporateReconcilingItemsAndEliminations0.00.0100.00.0100.0100.0100.00.0100.00.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, oxy:Chemical



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-30
Value96297410719981059114211851176115410601071115610689889088901008103010001232124212201200118711751119
Percentage of Revenues15.012.220.522.630.845.722.728.830.730.435.737.836.136.235.539.031.129.332.325.019.820.018.619.920.018.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax19.121.318.826.726.419.027.830.731.230.435.737.836.136.235.539.031.129.332.325.019.820.018.619.920.018.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments oxy:Chemical0.00.0100.00.0100.0100.0100.00.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OperatingSegments, oxy:MidstreamAndMarketing



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-30
Value790162778090981612971367603389410266270211202141133231294197362530435442269453389
Percentage of Revenues12.320.314.920.623.851.926.214.810.311.78.98.87.17.45.55.87.18.46.47.38.47.16.94.57.76.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax15.735.713.724.420.421.632.115.710.511.78.98.87.17.45.55.87.18.46.47.38.47.16.94.57.76.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments oxy:MidstreamAndMarketing0.00.0100.00.0100.0100.0100.00.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OperatingSegments, us-gaap:OilAndGas



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value485745333821271823512567288925312454226318651848
Percentage of Revenues75.856.773.061.568.4102.855.462.065.264.862.260.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax96.299.367.272.858.742.767.966.166.464.862.260.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments us-gaap:OilAndGas0.00.0100.00.0100.0100.0100.00.0100.00.00.00.0

Sales Revenue Net

Cost Of Revenue

us-gaap:CostOfRevenue



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-312009-09-302009-06-302009-03-31
Value61274574113861345705722136513502586338532973198321431803137317630602950287927202526244424322442213020592064
Percentage of CostOfRevenue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax12.116.313.037.133.611.717.035.636.583.568.752.552.549.853.353.453.253.147.147.944.144.149.951.151.251.955.867.2

Cost Of Goods And Services Sold

us-gaap:CostOfGoodsAndServicesSold



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-312009-09-302009-06-302009-03-31
Value61274574113861345705722136513502586338532973198321431803137317630602950287927202526244424322442213020592064
Percentage of CostOfGoodsAndServicesSold100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax12.116.313.037.133.611.717.035.636.583.568.752.552.549.853.353.453.253.147.147.944.144.149.951.151.251.955.867.2

Cost Of Goods Sold Excluding Depreciation Depletion And Amortization

Cost Of Goods And Services Sold Depreciation And Amortization

Operating Expenses

Selling General And Administrative Expense

us-gaap:SellingGeneralAndAdministrativeExpense



Period End2020-03-312019-03-31
Value260140
Percentage of SellingGeneralAndAdministrativeExpense100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax5.23.5

Interest And Debt Expense

us-gaap:InterestAndDebtExpense



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-312009-09-302009-06-302009-03-31
Value3524343811539899969797918681688860488301418202930343628302527215263238403227
Percentage of InterestAndDebtExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax7.09.56.74.12.41.62.32.52.63.02.82.72.53.42.61.50.21.00.30.30.30.40.50.60.60.50.50.40.43.80.50.70.81.00.90.9

Income Loss From Continuing Operations

us-gaap:IncomeLossFromContinuingOperations



Period End2020-03-312019-09-302019-03-312018-12-312018-09-302015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-312009-09-302009-06-30
Value-2013-7376317061869-2606180-215121114321387158813271359137913321560177518191405119610691097929684
Percentage of IncomeLossFromContinuingOperations100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-39.9-13.015.811.743.9-80.35.1-6.924.622.822.824.622.323.123.123.124.929.629.524.524.422.523.022.618.6

us-gaap:ConsolidationItems

oxy:CorporateReconcilingItemsAndEliminations



Period End2020-03-312019-09-302019-03-312018-09-30
Value-1091-1565-397-917
Percentage of IncomeLossFromContinuingOperations54.2212.3-62.9-49.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-21.6-27.5-9.9-21.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax oxy:CorporateReconcilingItemsAndEliminations0.0425.3178.8407.6

us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, oxy:Chemical



Period End2020-03-312019-09-302019-03-312018-09-30
Value186207265321
Percentage of IncomeLossFromContinuingOperations-9.2-28.142.017.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax3.73.66.67.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments oxy:Chemical0.019.325.027.1

us-gaap:OperatingSegments, oxy:MidstreamAndMarketing



Period End2020-03-312019-09-302019-03-312018-09-30
Value-12872662791698
Percentage of IncomeLossFromContinuingOperations63.9-36.144.290.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-25.54.77.039.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments oxy:MidstreamAndMarketing0.034.134.2124.2

us-gaap:OperatingSegments, us-gaap:OilAndGas



Period End2020-03-312019-09-302019-03-312018-09-30
Value179221484767
Percentage of IncomeLossFromContinuingOperations-8.9-30.076.741.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax3.53.912.118.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments us-gaap:OilAndGas0.05.820.626.5

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

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest



Period End2020-03-312019-12-312019-09-302019-03-312018-12-312018-09-302017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-30
Value-2095-990-6218568322579275792195-268-232-563-3051
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-41.5-21.7-10.921.413.860.69.225.96.6-9.8-9.1-24.7-94.0

us-gaap:ConsolidationItems

oxy:CorporateReconcilingItemsAndEliminations



Period End2020-03-312019-09-302019-03-312018-09-302017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-30
Value-1173-1449-172-207-149-184-148-154-145-197-219
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest56.0233.3-20.1-8.0-54.2-23.2-75.957.562.535.07.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-23.2-25.5-4.3-4.9-5.0-6.0-5.0-5.6-5.7-8.6-6.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax oxy:CorporateReconcilingItemsAndEliminations0.0393.877.592.073.486.068.576.2101.4112.6123.7

us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, oxy:Chemical



Period End2020-03-312019-09-302019-03-312018-09-302017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-30
Value18620726532120023017011788214272
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest-8.9-33.331.012.472.729.087.2-43.7-37.9-38.0-8.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax3.73.66.67.56.77.55.74.33.49.48.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments oxy:Chemical0.019.325.027.118.719.915.911.89.724.027.0

us-gaap:OperatingSegments, oxy:MidstreamAndMarketing



Period End2020-03-312019-09-302019-03-312018-09-302017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-30
Value-128726627916984119-47-180-58-9524
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest61.4-42.832.665.81.515.0-24.167.225.016.9-0.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-25.54.77.039.90.13.9-1.6-6.6-2.3-4.20.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments oxy:MidstreamAndMarketing0.034.134.2124.21.544.1-22.3-89.1-41.1-71.410.4

us-gaap:OperatingSegments, us-gaap:OilAndGas



Period End2020-03-312019-09-302019-03-312018-09-30
Value179221484767
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest-8.5-35.656.529.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax3.53.912.118.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments us-gaap:OilAndGas0.05.820.626.5

Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest

us-gaap:IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest



Period End2020-03-312019-12-312019-09-302019-03-312018-12-312018-09-302017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-312009-09-302009-06-302009-03-31
Value-2013-1036-7376317061869190507117-238-136-360-2606180-215121414351389158813271359137913321560177518191405121810811095943696380
Percentage of IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-39.9-22.7-13.015.811.743.96.316.64.0-8.7-5.3-15.8-80.35.1-6.924.622.922.824.622.323.123.123.124.929.629.524.524.922.723.023.018.912.4

Nonoperating Income Expense

us-gaap:NonoperatingIncomeExpense



Period End2020-03-312019-12-312019-09-302019-03-312018-12-312018-09-30
Value-718365717310387
Percentage of NonoperatingIncomeExpense100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-14.28.01.21.81.72.0

Income Tax Expense Benefit

us-gaap:IncomeTaxExpenseBenefit



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-312009-09-302009-06-302009-03-31
Value-82461163062251267103023398528578-30-96-203-445324-1981795793210379018448558751139108711111054816800729549455241
Percentage of IncomeTaxExpenseBenefit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-1.61.02.08.25.62.116.77.99.22.89.32.6-1.1-3.8-8.9-13.79.2-0.616.615.315.316.115.114.414.315.218.218.118.018.416.716.815.313.412.37.8

us-gaap:ConsolidationItems

oxy:CorporateReconcilingItemsAndEliminations



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-30
Value-82461163062251267103023398528578-30-96-203-445
Percentage of IncomeTaxExpenseBenefit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-1.61.02.08.25.62.116.77.99.22.89.32.6-1.1-3.8-8.9-13.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax oxy:CorporateReconcilingItemsAndEliminations0.00.0-31.50.0-101.4-51.6-315.60.0-144.9-41.9-133.2-36.114.967.1116.0251.4

Income Taxes Paid Net

Profit Loss

us-gaap:ProfitLoss



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-312009-09-302009-06-302009-03-31
Value-2013-1036-7526356317061869848708190507117-241-13978-2609176-218121114341392158313221355177118171549121310751088941694377
Percentage of ProfitLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-39.9-22.7-13.217.015.811.743.922.119.26.316.64.0-8.8-5.43.4-80.45.0-7.024.622.922.924.522.223.129.529.427.124.822.622.822.918.812.3

us-gaap:StatementEquityComponents

us-gaap:RetainedEarnings



Period End2020-03-312019-12-312019-09-302019-03-312018-12-312018-09-30
Value-2013-1139-7946317061869
Percentage of ProfitLoss100.0109.9105.6100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-39.9-25.0-14.015.811.743.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:RetainedEarnings0.00.00.00.00.00.0

Comprehensive Income Net Of Tax

Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest

Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest

us-gaap:ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest



Period End2020-03-312019-12-312019-09-302019-03-312018-12-312018-09-30
Value-2126-925-9006356892022
Percentage of ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-42.1-20.3-15.815.911.547.5

Net Income Loss

us-gaap:NetIncomeLoss



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-312009-09-302009-06-302009-03-31
Value-2232-1339-9126356317061869848708190507117-241-13978-2609176-218120814311390158313221355137513281559177118171549119110631064927682368
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-44.2-29.3-16.017.015.811.743.922.119.26.316.64.0-8.8-5.43.4-80.45.0-7.024.522.822.824.522.223.123.123.024.929.529.427.124.322.322.322.618.512.0

Net Income Loss Available To Common Stockholders Basic

us-gaap:NetIncomeLossAvailableToCommonStockholdersBasic



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-312009-09-302009-06-30
Value-2232-1338-9126326287051861843705189505117-241-13978-2609176-218120514281388157913191353137213261556176718141546118910621063926681
Percentage of NetIncomeLossAvailableToCommonStockholdersBasic100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-44.2-29.3-16.016.915.711.743.722.019.16.316.54.0-8.8-5.43.4-80.45.0-7.024.422.822.824.522.123.023.023.024.829.429.427.024.322.322.322.618.5

Net Income Loss Available To Common Stockholders Diluted

Net Income Loss Attributable To Noncontrolling Interest

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
Value10164310933012544344770443804385444957440674280842026414434198242465431094163042395420184343750089543695338956259715107029369275694436943767422658246421065625642836162260044572445459554065524324750346259455314422941537
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Liabilities And Stockholders Equity

us-gaap:LiabilitiesAndStockholdersEquity



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312008-12-31
Value10164310933012544344770443804385444957440674280842026414434198242465431094163042395420184343750089543695338956259715107029369275694436943767422658246421065625642836162260044572445459554065524324750346259455314422941537
Percentage of LiabilitiesAndStockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Stockholders Equity

us-gaap:StockholdersEquity



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-31
Value3129534232360802134721236-1722148920572349594347943289429984312642790417534088240016404743955038747376203647935160336583248431708307982993529081
Percentage of StockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets30.831.328.847.747.9-0.447.849.062.160.861.662.162.161.661.962.162.361.761.562.962.763.764.462.362.066.766.665.765.8

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
Value141091868120944942592709932111121099088948270704580758238842887118972823794021054011008104341387310507107861089911323119381085910154949211909121331198711542113769943105911305989229189908880867172
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 Assets13.917.116.721.120.922.624.724.920.819.717.019.219.419.620.921.219.621.621.020.219.524.714.715.315.716.317.216.115.414.818.118.919.519.219.918.219.624.918.819.920.018.317.3

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
Value202130324840175117523033295413621606167218062218149422333180375131763201254727562153378928972391233233933771306921401592376044103760378140391994210025782109232218951230160817551126177719641339
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 Assets2.02.83.93.93.96.96.63.13.84.04.45.33.55.27.68.87.67.45.15.14.06.74.13.43.44.95.44.63.32.55.76.96.16.37.13.73.94.94.45.04.22.80.00.00.04.30.00.0

Accounts Receivable Net Current

us-gaap:AccountsReceivableNetCurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312008-12-31
Value2458637358545273530048936000552151844145374939134316398935213113278029703507397330684206496058265233567456535221499549165354495957125395482955426009503243674335461641423117
Percentage of AccountsReceivableNetCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets2.45.84.711.811.911.213.312.512.19.99.09.310.29.38.57.36.66.87.07.35.77.56.98.37.68.28.17.77.67.78.27.79.39.08.410.211.19.69.29.410.19.47.5

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
Value143614471601158214841260100913471057124610079201005866927906997986112211201133105213591323130812001328134013061344129714991250106912491202109110411127122010661081958
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 Assets1.41.31.33.53.32.92.23.12.53.02.42.22.42.02.22.12.42.32.22.12.11.91.91.91.91.71.92.02.02.12.02.32.01.82.22.22.02.02.42.62.32.42.3

Inventory Finished Goods

us-gaap:InventoryFinishedGoods



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302009-12-31
Value5055336651030990788549858562776519429526395397381466395541497533485713693688589708725690763745998803655794772668636661738584
Percentage of InventoryFinishedGoods100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.50.50.52.32.21.81.21.91.31.81.31.01.20.91.00.91.10.91.10.91.00.91.01.01.00.81.01.11.01.21.11.61.31.11.41.41.21.21.41.61.3

Inventory L I F O Reserve

us-gaap:InventoryLIFOReserve



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302009-12-31
Value40404747474743454343354139405050505089899089919191911011011011019898989872727272818181
Percentage of InventoryLIFOReserve100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.20.20.20.20.10.10.10.10.10.10.20.20.10.20.20.20.10.10.10.10.20.20.2

Other Assets Current

us-gaap:OtherAssetsCurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312011-12-31
Value2220132364458197247461149109671273348346612611340108312021284911890777815807129112461201105611861229171316401297
Percentage of OtherAssetsCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets2.21.25.11.81.61.72.62.51.71.71.21.13.03.12.62.83.12.11.81.41.51.41.81.81.71.51.71.82.62.62.2

Prepaid Expense And Other Assets Current

Property Plant And Equipment Gross

us-gaap:PropertyPlantAndEquipmentGross



Period End2020-03-312019-12-312019-09-302018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-312008-12-31
Value1234621223471369257442070246712937105874515890528009669371571665313148728
Percentage of PropertyPlantAndEquipmentGross100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets121.5111.9109.2169.7167.1165.4163.6132.4128.2124.7115.5109.0120.1117.3

us-gaap:ConsolidationItems

us-gaap:CorporateNonSegment



Period End2020-03-312019-12-312019-09-302018-12-31
Value107211181397550
Percentage of PropertyPlantAndEquipmentGross0.90.91.00.7
Percentage of Assets1.11.01.11.3
Percentage of Assets us-gaap:CorporateNonSegment0.00.00.00.0

us-gaap:StatementBusinessSegments

oxy:ChemicalSegment



Period End2020-03-312019-12-312019-09-302018-12-31
Value7187717270927001
Percentage of PropertyPlantAndEquipmentGross5.85.95.29.4
Percentage of Assets7.16.65.716.0
Percentage of Assets oxy:ChemicalSegment0.00.00.00.0

oxy:MidstreamSegment



Period End2020-03-312019-12-312019-09-302018-12-31
Value8189817681338070
Percentage of PropertyPlantAndEquipmentGross6.66.75.910.8
Percentage of Assets8.17.56.518.4
Percentage of Assets oxy:MidstreamSegment0.00.00.00.0

oxy:OilAndGasSegment



Period End2020-03-312019-12-312019-09-302018-12-31
Value10701410588111066858799
Percentage of PropertyPlantAndEquipmentGross86.786.580.879.0
Percentage of Assets105.396.888.2134.1
Percentage of Assets oxy:OilAndGasSegment0.00.00.00.0

Accumulated Depreciation Depletion And Amortization Property Plant And Equipment

us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312008-12-31
Value44389418784680444889439134298341825407823991839072382503733037607389564207641212401383941936612368973587034785363063500133746332313184430536292662803226934258052474323687229962210021296206302204621205203451948616462
Percentage of AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets43.738.337.3100.398.998.093.092.593.293.092.388.988.690.4101.197.295.590.773.167.967.261.850.849.848.747.945.945.344.543.741.040.140.239.440.240.539.439.346.445.844.744.139.6

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
Value79073804699012132115319003143731155304323134431174320653146632005323373041931038315053163936835404784010939730584655713456044558215502753949529815206450963493974690345684430254179540598365363597434514338643364532266
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 Assets77.873.671.871.771.971.769.369.173.274.277.475.075.475.073.173.275.072.873.574.575.170.681.881.380.980.479.280.080.581.177.776.876.176.175.276.675.169.775.774.674.476.177.7

Long Term Investments

Goodwill

Intangible Assets Net Excluding Goodwill

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
Value1196314949156977880753774128372807870707400636263916852636256885267682668427433782569158244952188698190843488428234778672907834788780987947700480939391782562986062644060926134
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 Assets11.813.712.517.617.016.918.618.316.517.615.415.216.114.813.712.416.215.814.814.413.014.713.312.611.812.112.712.211.811.411.912.313.113.212.214.817.414.913.313.114.113.814.8

Debt Current

Long Term Debt Current

us-gaap:LongTermDebtCurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-312016-03-312015-12-31
Value2464513111611611611650020001450
Percentage of LongTermDebtCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets2.40.00.00.30.30.30.31.24.83.3

Accounts Payable Current

us-gaap:AccountsPayableCurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312008-12-31
Value3845701767895445526148855443541250594408373438254071392633923126280130693727414538675229551160975423552056715274488947085504545355225304459550305076464638323952407133793306
Percentage of AccountsPayableCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets3.86.45.412.211.911.112.112.311.810.59.09.19.69.18.17.46.77.17.47.67.29.37.78.77.87.98.27.87.47.38.48.59.08.88.09.29.48.98.18.58.97.68.0

Accrued Income Taxes Current

Long Term Debt

us-gaap:LongTermDebt



Period End2020-03-312019-12-312019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302014-12-31
Value3852238588104001040010400104001040010400990098009800980098008300830076008300830083006800
Percentage of LongTermDebt100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets37.935.323.223.423.723.123.624.323.623.623.323.122.719.919.618.119.116.615.312.1

Long Term Debt Noncurrent

us-gaap:LongTermDebtNoncurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312008-12-31
Value3605838537475831015510203102011019810312103099328932693249322981983338331560868836882688061396838683768356877693969617026702470237622762058735871587037493748511125122511251125572049
Percentage of LongTermDebtNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets35.535.237.922.723.023.322.723.424.122.222.522.222.022.820.019.713.315.813.712.711.512.29.69.79.910.010.010.410.710.911.611.99.59.810.36.96.99.75.35.45.55.84.9

Deferred Tax Liabilities Noncurrent

Pension And Other Postretirement Defined Benefit Plans Liabilities Noncurrent

us-gaap:PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-31
Value196818071927819816809828101010081005963
Percentage of PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets1.91.71.51.81.81.81.82.32.42.42.2

Minority Interest

Other Liabilities Noncurrent

us-gaap:OtherLiabilitiesNoncurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312008-12-31
Value47433814356697710201009915102310631171410841714181429939024050415340393313320932243203343334643441350136183654376438103584358237013662329534843432345232793327317631603217
Percentage of OtherLiabilitiesNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets4.73.52.82.22.32.32.02.32.52.89.99.99.810.09.49.69.99.36.65.96.05.74.84.95.05.05.25.45.75.95.55.66.06.15.86.46.36.66.97.27.07.17.7

Stockholders Equity

us-gaap:StockholdersEquity



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-31
Value3129534232360802134721236-1722148920572349594347943289429984312642790417534088240016404743955038747376203647935160336583248431708307982993529081
Percentage of StockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets30.831.328.847.747.9-0.447.849.062.160.861.662.162.161.661.962.162.361.761.562.962.763.764.462.362.066.766.665.765.8

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
Value210209209179179179179179179179179179179178178178178178178178178178178178178178178178178178178177177177177177177177177177177177176
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 Assets0.20.20.20.40.40.40.40.40.40.40.40.40.40.40.40.40.40.40.40.30.30.30.20.30.30.30.30.30.30.30.30.30.30.30.30.30.30.30.40.40.40.40.4

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
Value17229201802222723848237952375023635223612210721935220322243522513229812383624661253752596031712348963529436067441664351942652418314070039634388293799038089371523626235142338823248531043298682896428083273292653424684
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 Assets17.018.517.753.353.654.252.650.751.652.253.253.453.053.357.358.260.459.863.364.266.164.161.861.961.660.258.658.859.059.258.057.858.858.559.259.557.457.061.060.760.060.059.4

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
Value10653106531065310653106531047310162926891689168915491499143914391439136912891219113910787348528814676817079609551485113509150914710466045174502443442714241422841724172416141614121
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 Assets10.59.78.523.824.023.922.621.021.421.822.121.821.521.222.021.521.721.018.216.816.415.211.410.910.28.87.47.67.77.97.27.27.37.57.77.87.88.18.89.09.19.49.9

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-334-221-332-184-168-172-154-308-312-258-238-252-253-266-294-299-304-307-559-316-206-357-289-291-296-303-448-456-502-502-481-490-488-483-419-452-522-524-443-483-548-596-552
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-0.3-0.2-0.3-0.4-0.4-0.4-0.3-0.7-0.7-0.6-0.6-0.6-0.6-0.6-0.7-0.7-0.7-0.7-1.1-0.6-0.4-0.6-0.4-0.4-0.4-0.4-0.6-0.7-0.8-0.8-0.7-0.8-0.8-0.8-0.7-0.8-1.0-1.0-0.9-1.0-1.2-1.3-1.3

Net Cash Provided By Used In Operating Activities

us-gaap:NetCashProvidedByUsedInOperatingActivities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-03-312017-03-312016-03-312015-03-312014-03-312013-03-312012-03-312011-03-312010-03-312009-03-31
Value13392009240520139482500100965268956126972712276522222210780
Percentage of NetCashProvidedByUsedInOperatingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax26.544.042.354.023.741.627.322.030.218.144.346.244.138.846.325.4

Net Cash Provided By Used In Investing Activities

us-gaap:NetCashProvidedByUsedInInvestingActivities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-03-312017-03-312016-03-312015-03-312014-03-312013-03-312012-03-312011-03-312010-03-312009-03-31
Value-1530-1301-25023-1288-1415-1506-971-819-637-2206-2373-2195-2415-1741-1054-1167
Percentage of NetCashProvidedByUsedInInvestingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-30.3-28.5-440.0-34.5-35.3-25.1-26.3-27.7-27.9-71.3-39.0-37.4-38.5-30.4-22.1-38.0

Net Cash Provided By Used In Financing Activities

us-gaap:NetCashProvidedByUsedInFinancingActivities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-03-312017-03-312016-03-312015-03-312014-03-312013-03-312012-03-312011-03-312010-03-312009-03-31
Value-1019-249926232-726-814-915-104-572-779-138531-371-959-491-264
Percentage of NetCashProvidedByUsedInFinancingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-20.2-54.8461.3-19.5-20.3-15.2-2.8-19.3-3.40.3-22.70.5-5.9-16.7-10.3-8.6

Net Cash Provided By Used In Operating Activities

us-gaap:NetCashProvidedByUsedInOperatingActivities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-03-312017-03-312016-03-312015-03-312014-03-312013-03-312012-03-312011-03-312010-03-312009-03-31
Value13392009240520139482500100965268956126972712276522222210780
Percentage of NetCashProvidedByUsedInOperatingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax26.544.042.354.023.741.627.322.030.218.144.346.244.138.846.325.4

Net Income Loss

us-gaap:NetIncomeLoss



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-312009-09-302009-06-302009-03-31
Value-2232-1339-9126356317061869848708190507117-241-13978-2609176-218120814311390158313221355137513281559177118171549119110631064927682368
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-44.2-29.3-16.017.015.811.743.922.119.26.316.64.0-8.8-5.43.4-80.45.0-7.024.522.822.824.522.223.123.123.024.929.529.427.124.322.322.322.618.512.0

Profit Loss

us-gaap:ProfitLoss



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-312009-09-302009-06-302009-03-31
Value-2013-1036-7526356317061869848708190507117-241-13978-2609176-218121114341392158313221355177118171549121310751088941694377
Percentage of ProfitLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-39.9-22.7-13.217.015.811.743.922.119.26.316.64.0-8.8-5.43.4-80.45.0-7.024.622.922.924.522.223.129.529.427.124.822.622.822.918.812.3

us-gaap:StatementEquityComponents

us-gaap:RetainedEarnings



Period End2020-03-312019-12-312019-09-302019-03-312018-12-312018-09-30
Value-2013-1139-7946317061869
Percentage of ProfitLoss100.0109.9105.6100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-39.9-25.0-14.015.811.743.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:RetainedEarnings0.00.00.00.00.00.0

Depreciation Depletion And Amortization

us-gaap:DepreciationDepletionAndAmortization



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-03-312012-03-312011-03-312010-03-312009-03-31
Value22422271170610319731086102394792199598994210461070110211231116102910561024126612591085890874786
Percentage of DepreciationDepletionAndAmortization100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Increase Decrease In Other Operating Capital Net

Increase Decrease In Inventories

us-gaap:IncreaseDecreaseInInventories



Period End2020-03-312019-03-31
Value70221
Percentage of IncreaseDecreaseInInventories100.0100.0

Net Cash Provided By Used In Investing Activities

us-gaap:NetCashProvidedByUsedInInvestingActivities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-03-312017-03-312016-03-312015-03-312014-03-312013-03-312012-03-312011-03-312010-03-312009-03-31
Value-1530-1301-25023-1288-1415-1506-971-819-637-2206-2373-2195-2415-1741-1054-1167
Percentage of NetCashProvidedByUsedInInvestingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-30.3-28.5-440.0-34.5-35.3-25.1-26.3-27.7-27.9-71.3-39.0-37.4-38.5-30.4-22.1-38.0

Payments To Acquire Property Plant And Equipment

us-gaap:PaymentsToAcquirePropertyPlantAndEquipment



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-03-312017-03-312016-03-312015-03-312014-03-312013-03-312012-03-312011-03-312010-03-312009-03-31
Value1293217117141211125913371032722646167522692070241213258481071
Percentage of PaymentsToAcquirePropertyPlantAndEquipment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Net Cash Provided By Used In Financing Activities

us-gaap:NetCashProvidedByUsedInFinancingActivities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-03-312017-03-312016-03-312015-03-312014-03-312013-03-312012-03-312011-03-312010-03-312009-03-31
Value-1019-249926232-726-814-915-104-572-779-138531-371-959-491-264
Percentage of NetCashProvidedByUsedInFinancingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-20.2-54.8461.3-19.5-20.3-15.2-2.8-19.3-3.40.3-22.70.5-5.9-16.7-10.3-8.6

Proceeds From Issuance Of Long Term Debt

Repayments Of Long Term Debt

Payments For Repurchase Of Common Stock

us-gaap:PaymentsForRepurchaseOfCommonStock



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-03-312016-03-312015-03-312014-03-312013-03-312012-03-312011-03-31
Value00002373400720794661513
Percentage of PaymentsForRepurchaseOfCommonStock0.00.00.00.0100.0100.00.0100.0100.0100.0100.0100.0100.0

Repayments Of Long Term Debt

Debt Instrument Interest Rate Stated Percentage

Effective Income Tax Rate Continuing Operations

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

us-gaap:OperatingLeaseRightOfUseAsset



Period End2020-03-312019-12-312019-09-302019-06-302019-03-31
Value119313851078681684
Percentage of OperatingLeaseRightOfUseAsset100.0100.0100.0100.0100.0

us-gaap:PropertyPlantAndEquipmentByType

oxy:Compressors



Period End2020-03-312019-12-312019-09-30
Value154162174
Percentage of OperatingLeaseRightOfUseAsset12.911.716.1

oxy:OffshoreAndOnshoreDrillingRigs



Period End2020-03-312019-12-312019-09-30
Value105217186
Percentage of OperatingLeaseRightOfUseAsset8.815.717.3

oxy:OtherFieldEquipment



Period End2020-03-312019-12-312019-09-30
Value34138997
Percentage of OperatingLeaseRightOfUseAsset28.628.19.0

oxy:PipelinesRailCarsStorageFacilitiesEasementsAndRealEstate



Period End2020-03-312019-12-312019-09-30
Value619659682
Percentage of OperatingLeaseRightOfUseAsset51.947.663.3

Cash And Cash Equivalents Period Increase Decrease

Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-312015-12-31
Value236435745365175117523033295413621606167222334394
Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Proceeds From Repayments Of Short Term Debt

Proceeds From Sale Of Short Term Investments

oxy:AllOtherRevenues



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value13635456689569101595925269
Percentage of AllOtherRevenues100.0100.0100.0100.0100.0100.0100.0100.0100.0

oxy:CostsAndOtherDeductions



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-312009-09-302009-06-302009-03-31
Value782881516563363233064073368430592841289029982813305928412877635730683366408445373864395639793800384736863686333733593417296429733034270026172524
Percentage of CostsAndOtherDeductions100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

oxy:GainsonSaleofEquityInvestmentsandOtherAssets



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value747212815759261033
Percentage of GainsonSaleofEquityInvestmentsandOtherAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0

oxy:IncreaseDecreaseinCapitalAccrual



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value-435-122-52-57-51481339-45
Percentage of IncreaseDecreaseinCapitalAccrual100.0100.0100.0100.0100.0100.0100.0100.0100.0

oxy:InterestDividendsAndOtherIncome



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-312009-09-302009-06-302009-03-31
Value344256417835343829203121252720312631314630262835262414703532274021222830
Percentage of InterestDividendsAndOtherIncome100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

oxy:IssuanceOfCommonStockAndOtherNet



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value127886740743755245132
Percentage of IssuanceOfCommonStockAndOtherNet100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StatementEquityComponents

us-gaap:AdditionalPaidInCapital



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value126886710743755245132
Percentage of IssuanceOfCommonStockAndOtherNet99.2100.099.6100.0100.0100.0100.0100.0100.0

us-gaap:CommonStock



Period End2020-03-312019-12-312019-09-302018-09-30
Value10300
Percentage of IssuanceOfCommonStockAndOtherNet0.80.00.40.0

oxy:NonCashPortionOfAssetImpairmentAndRelatedItems



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-03-312017-03-312016-03-31
Value1768100332500305301378
Percentage of NonCashPortionOfAssetImpairmentAndRelatedItems100.0100.0100.00.00.0100.0100.0100.0100.0

oxy:PaymentsForProceedsFromEquityInvestmentsAndOtherNet



Period End2020-03-312019-03-31
Value-14252
Percentage of PaymentsForProceedsFromEquityInvestmentsAndOtherNet100.0100.0

oxy:PaymentsForPurchasesOfAssetsAndBusinesses



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-03-312017-03-312016-03-31
Value35162278507692021771924
Percentage of PaymentsForPurchasesOfAssetsAndBusinesses100.0100.0100.0100.0100.0100.0100.0100.0100.0

oxy:PretaxAssetImpairmentAndRelatedItems



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-09-302017-03-312016-09-302016-03-312015-09-302015-03-312014-06-30
Value180310363250030521412301113221783397324471
Percentage of PretaxAssetImpairmentAndRelatedItems100.0100.0100.00.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

oxy:ProceedsfromSaleofAssetsandEquityMethodInvestmentsNet



Period End2020-03-312019-03-31
Value11216
Percentage of ProceedsfromSaleofAssetsandEquityMethodInvestmentsNet100.0100.0

oxy:PurchasedCommodities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value39344244143136536634310013
Percentage of PurchasedCommodities100.0100.0100.0100.0100.0100.0100.0100.0100.0

oxy:RevenuesOperatingAndNonoperating



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-312009-09-302009-06-302009-03-31
Value64516796587144764089480261764131382531053603297827332558228135143096602268466118647561215907599157926283607662085779492947954793412637223103
Percentage of RevenuesOperatingAndNonoperating100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

oxy:TransportationAndGatheringExpense



Period End2020-03-312019-03-31
Value55831
Percentage of TransportationAndGatheringExpense100.0100.0

us-gaap:DerivativeInstrumentRisk, us-gaap:HedgingDesignation

srt:AverageSalesPrices

oxy:MarketingDerivatives, us-gaap:Nondesignated



Period End2020-03-312019-12-312019-09-30
Value41.582.210000000000001-2.210000000000001
Percentage of AverageSalesPrices100.0100.0100.0

us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:AssetImpairmentCharges

us-gaap:OperatingSegments, us-gaap:OilAndGas



Period End2020-03-31
Value264
Percentage of AssetImpairmentCharges100.0

us-gaap:StatementBusinessSegments

oxy:OilAndGasSegment



Period End2020-03-312019-09-30
Value581285
Percentage of AssetImpairmentCharges220.10.0

us-gaap:StatementGeographical

oxy:GulfOfMexico



Period End2020-03-31
Value241
Percentage of AssetImpairmentCharges91.3

oxy:OmanBoliviaAndTheGulfOfMexico



Period End2020-03-31
Value293
Percentage of AssetImpairmentCharges111.0

us-gaap:BusinessCombinationAcquisitionRelatedCosts



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value148673924500000
Percentage of BusinessCombinationAcquisitionRelatedCosts100.0100.0100.0100.00.00.00.00.0

us-gaap:BusinessAcquisition

oxy:AnadarkoPetroleumCorporation



Period End2020-03-312019-12-312019-09-30
Value148673924
Percentage of BusinessCombinationAcquisitionRelatedCosts100.0100.0100.0

us-gaap:ConsolidationItems

oxy:CorporateReconcilingItemsAndEliminations



Period End2020-03-31
Value148
Percentage of BusinessCombinationAcquisitionRelatedCosts100.0

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value-1210-17913614-1-1281791592-244-66
Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:CashProvidedByUsedInInvestingActivitiesDiscontinuedOperations



Period End2020-03-312019-12-312019-03-312018-12-312011-03-312010-03-31
Value-21-29002570-80
Percentage of CashProvidedByUsedInInvestingActivitiesDiscontinuedOperations100.0100.00.00.0100.0100.0

us-gaap:CashProvidedByUsedInOperatingActivitiesDiscontinuedOperations



Period End2020-03-312019-12-312019-03-312018-12-312016-03-312015-03-312014-03-312013-03-312012-03-312011-03-312010-03-312009-03-31
Value11524500550-5-7-9-83-49-6
Percentage of CashProvidedByUsedInOperatingActivitiesDiscontinuedOperations100.0100.00.00.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:CommonStockDividendsPerShareDeclared



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-312009-09-302009-06-302009-03-31
Value0.790.790.790.780.780.78000000000000020.780.770.770.770.760.760.760.750.750.750.750.720.720.720.720.640.640.640.540.540.540.460.460.460.380.380.330.330.330.32
Percentage of CommonStockDividendsPerShareDeclared100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredIncomeTaxExpenseBenefit



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-03-312017-03-312016-03-312015-03-312014-03-312013-03-312012-03-312011-03-312010-03-312009-03-31
Value-21823-10973710-17994-10877-631982743502767449
Percentage of DeferredIncomeTaxExpenseBenefit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DefinedBenefitPlanContributionsByEmployer



Period End2020-03-312019-03-31
Value911
Percentage of DefinedBenefitPlanContributionsByEmployer100.0100.0

us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanNetPeriodicBenefitCost

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-31
Value201819151414152119171919
Percentage of DefinedBenefitPlanNetPeriodicBenefitCost100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PensionPlansDefinedBenefit



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-31
Value11-201522-1211222
Percentage of DefinedBenefitPlanNetPeriodicBenefitCost55.0-111.178.913.314.3-7.113.34.85.311.810.510.5

us-gaap:DerivativeInstrumentRisk, us-gaap:HedgingDesignation, us-gaap:Position

us-gaap:DerivativeNonmonetaryNotionalAmountVolume

oxy:NaturalGasPerCubicFoot, us-gaap:Nondesignated, us-gaap:Short



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value122.00.0-27.0-7.0162.054.0
Percentage of DerivativeNonmonetaryNotionalAmountVolume100.00.0100.0100.0100.0100.0

srt:CrudeOilAndNGLPerBarrel, us-gaap:Nondesignated, us-gaap:Long



Period End2020-03-312019-12-312019-09-30
Value29.019.0-18.0
Percentage of DerivativeNonmonetaryNotionalAmountVolume23.80.066.7

us-gaap:DividendsCommonStockCash



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value719708709582586591595594594
Percentage of DividendsCommonStockCash100.0100.0100.0100.0100.0100.0100.0100.0100.0

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
Value719708709582586591595594594
Percentage of DividendsCommonStockCash100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DividendsPreferredStockCash



Period End2020-03-312019-12-312019-09-30
Value219200118
Percentage of DividendsPreferredStockCash100.0100.0100.0

us-gaap:StatementEquityComponents

us-gaap:RetainedEarnings



Period End2020-03-312019-12-312019-09-30
Value219200118
Percentage of DividendsPreferredStockCash100.0100.0100.0

us-gaap:ExplorationAbandonmentAndImpairmentExpense



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302015-03-312014-03-312013-03-312012-03-312011-03-312010-03-312009-03-31
Value184820111029121342582493248
Percentage of ExplorationAbandonmentAndImpairmentExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ExplorationExpense



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-312009-09-302009-06-302009-03-31
Value3711263353650242115881192795108535455687850699698396284837356565458
Percentage of ExplorationExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FinanceLeaseInterestExpense



Period End2020-03-312019-09-302019-03-31
Value310
Percentage of FinanceLeaseInterestExpense100.0100.00.0

us-gaap:FinanceLeasePrincipalPayments



Period End2020-03-312019-03-31
Value90
Percentage of FinanceLeasePrincipalPayments100.00.0

us-gaap:FinanceLeaseRightOfUseAssetAmortization



Period End2020-03-312019-09-302019-03-31
Value450
Percentage of FinanceLeaseRightOfUseAssetAmortization100.0100.00.0

us-gaap:GainLossOnDerivativeInstrumentsNetPretax



Period End2020-03-312019-12-312019-09-302019-03-312018-12-312018-09-30
Value-585266-33000
Percentage of GainLossOnDerivativeInstrumentsNetPretax100.0100.0100.00.00.00.0

us-gaap:ConsolidationItems

oxy:CorporateReconcilingItemsAndEliminations



Period End2020-03-31
Value84
Percentage of GainLossOnDerivativeInstrumentsNetPretax-14.4

us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, us-gaap:OilAndGas



Period End2020-03-31
Value952
Percentage of GainLossOnDerivativeInstrumentsNetPretax-162.7

us-gaap:DerivativeInstrumentRisk, us-gaap:IncomeStatementLocation

oxy:MarketingDerivatives, us-gaap:Sales



Period End2020-03-312019-12-312019-09-302019-03-312018-12-312018-09-30
Value410192391564224636
Percentage of GainLossOnDerivativeInstrumentsNetPretax-70.1722.9-275.80.00.00.0

oxy:OilCollarsAndCalls, us-gaap:Sales



Period End2020-03-312019-12-312019-09-302019-03-312018-12-312018-09-30
Value952-18275000
Percentage of GainLossOnDerivativeInstrumentsNetPretax-162.7-68.4-227.30.00.00.0

us-gaap:InterestRateSwap, oxy:GainLossonInterestRateSwapsandWarrantsNet



Period End2020-03-312019-12-312019-09-302019-03-312018-12-312018-09-30
Value-669167-45000
Percentage of GainLossOnDerivativeInstrumentsNetPretax114.462.8136.40.00.00.0

us-gaap:Warrant, oxy:GainLossonInterestRateSwapsandWarrantsNet



Period End2020-03-312019-12-312019-09-302019-03-312018-12-312018-09-30
Value846120000
Percentage of GainLossOnDerivativeInstrumentsNetPretax-14.422.9-60.60.00.00.0

us-gaap:GoodwillImpairmentLoss



Period End2020-03-31
Value1200
Percentage of GoodwillImpairmentLoss100.0

us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, oxy:MidstreamAndMarketing



Period End2020-03-31
Value1400
Percentage of GoodwillImpairmentLoss116.7

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-312009-09-302009-06-302009-03-31
Value-1377-1355-69284478372924921072984215605165-326-283-596-3111446-27019382309225425192142210721442106259727392849236219651822175914261105579
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncomeLossFromEquityMethodInvestments



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-312009-09-302009-06-302009-03-31
Value-13399104977310387786360187305851336058369383671068696901011021238197695965664642
Percentage of IncomeLossFromEquityMethodInvestments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncomeLossFromEquityMethodInvestmentsNetOfDividendsOrDistributions



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312015-03-312014-03-312013-03-312012-03-31
Value-1740-14402427-3-3229
Percentage of IncomeLossFromEquityMethodInvestmentsNetOfDividendsOrDistributions100.00.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncomeTaxesPaid



Period End2020-03-312019-03-312017-03-312016-03-31
Value111223174102
Percentage of IncomeTaxesPaid100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInAccountsPayableAndAccruedLiabilities



Period End2020-03-312019-03-31
Value-4401-40
Percentage of IncreaseDecreaseInAccountsPayableAndAccruedLiabilities100.0100.0

us-gaap:IncreaseDecreaseInAccruedIncomeTaxesPayable



Period End2020-03-312019-03-31
Value48-7
Percentage of IncreaseDecreaseInAccruedIncomeTaxesPayable100.0100.0

us-gaap:IncreaseDecreaseInOtherCurrentAssets



Period End2020-03-312019-03-31
Value-324199
Percentage of IncreaseDecreaseInOtherCurrentAssets100.0100.0

us-gaap:IncreaseDecreaseInReceivables



Period End2020-03-312019-03-31
Value-3909417
Percentage of IncreaseDecreaseInReceivables100.0100.0

us-gaap:IncrementalCommonSharesAttributableToShareBasedPaymentArrangements



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312015-06-302014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-312009-09-302009-06-30
Value0-10110111010000000000000011123
Percentage of IncrementalCommonSharesAttributableToShareBasedPaymentArrangements0.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:InterestPaidNet



Period End2020-03-312019-12-312019-03-312018-12-312018-03-312017-03-31
Value572301114859770
Percentage of InterestPaidNet100.0100.0100.0100.0100.0100.0

us-gaap:LeaseCost



Period End2020-03-312019-09-302019-06-302019-03-31
Value256304171184
Percentage of LeaseCost100.0100.0100.0100.0

us-gaap:NetCashProvidedByUsedInInvestingActivitiesContinuingOperations



Period End2020-03-312019-12-312019-03-312018-12-312015-03-312014-03-312012-03-312011-03-312010-03-31
Value-1509-1272-1415-1506-2206-1894-2415-4311-988
Percentage of NetCashProvidedByUsedInInvestingActivitiesContinuingOperations100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:NetCashProvidedByUsedInOperatingActivitiesContinuingOperations



Period End2020-03-312019-12-312019-03-312018-12-312017-03-312016-03-312015-03-312014-03-312013-03-312012-03-312011-03-312010-03-312009-03-31
Value12241764948250065213956627042721277322192259786
Percentage of NetCashProvidedByUsedInOperatingActivitiesContinuingOperations100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OperatingLeaseCost



Period End2020-03-312019-12-312019-09-302019-03-31
Value8512813991
Percentage of OperatingLeaseCost100.0100.0100.0100.0

us-gaap:IncomeStatementLocation

us-gaap:CostOfSales



Period End2020-03-312019-12-312019-09-302019-03-31
Value14312013377
Percentage of OperatingLeaseCost168.293.895.784.6

us-gaap:SellingGeneralAndAdministrativeExpenses



Period End2020-03-312019-12-312019-09-302019-03-31
Value21312616
Percentage of OperatingLeaseCost24.724.218.717.6

us-gaap:OperatingLeasePayments



Period End2020-03-312019-03-31
Value14548
Percentage of OperatingLeasePayments100.0100.0

us-gaap:OperatingLeasePaymentsUse



Period End2020-03-312019-03-31
Value3619
Percentage of OperatingLeasePaymentsUse100.0100.0

us-gaap:OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodNetOfTax



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-31
Value-111108-3422-16144544-194751223549991185
Percentage of OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodTax



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-31
Value31-33100-181-40-2-1-315-2-4-311123356-565-3
Percentage of OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodTax100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossArisingDuringPeriodNetOfTax



Period End2020-03-312019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-09-302017-03-312016-03-312015-09-302015-03-312014-09-302013-06-302013-03-312012-06-302012-03-31
Value-20000-11211-1-1-111-124
Percentage of OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossArisingDuringPeriodNetOfTax100.00.00.00.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAfterTax



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value-21-114-182-1-1-1-3
Percentage of OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAfterTax100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationTax



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value103250100
Percentage of OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationTax100.00.0100.0100.00.0100.00.00.0

us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationAfterTax



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value-2-20000-10-1-2
Percentage of OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationAfterTax100.0100.00.00.00.00.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationTax



Period End2020-03-312019-06-302019-03-312018-12-312018-09-302018-06-30
Value-1000-30
Percentage of OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationTax100.00.00.00.0100.00.0

us-gaap:OtherComprehensiveIncomeLossNetOfTax



Period End2020-03-312019-12-312019-09-302019-03-312018-12-312018-09-30
Value-113111-1484-17153
Percentage of OtherComprehensiveIncomeLossNetOfTax100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-312009-09-302009-06-30
Value-113111-148-164-1715344553-243-1101512578469-2-53370240654825-46
Percentage of OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StatementEquityComponents

us-gaap:AccumulatedOtherComprehensiveIncome



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value-113111-148-164-1715344
Percentage of OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherCostAndExpenseOperating



Period End2020-03-312019-12-312019-09-302019-03-312018-12-312018-09-30
Value195564363238311280
Percentage of OtherCostAndExpenseOperating100.0100.0100.0100.0100.0100.0

us-gaap:OtherNoncashIncomeExpense



Period End2020-03-312019-09-302019-06-302019-03-312018-03-312017-03-31
Value550-227-126-22523-84
Percentage of OtherNoncashIncomeExpense100.0100.0100.0100.0100.0100.0

us-gaap:PaymentsOfDividendsCommonStock



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-03-312017-03-312016-03-312015-03-312014-03-312012-03-312011-03-312010-03-312009-03-31
Value913858588587591594592584574557514374310269260
Percentage of PaymentsOfDividendsCommonStock100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProceedsFromIncomeTaxRefunds



Period End2020-03-312019-03-31
Value261
Percentage of ProceedsFromIncomeTaxRefunds100.0100.0

us-gaap:BusinessAcquisition

oxy:AnadarkoPetroleumCorporation



Period End2020-03-31
Value881
Percentage of ProceedsFromIncomeTaxRefunds3388.5

us-gaap:ProceedsFromIssuanceOrSaleOfEquity



Period End2020-03-312019-03-31
Value9016
Percentage of ProceedsFromIssuanceOrSaleOfEquity100.0100.0

us-gaap:ProceedsFromPaymentsForOtherFinancingActivities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312013-03-312012-03-312011-03-31
Value-196264-31-2-270200135
Percentage of ProceedsFromPaymentsForOtherFinancingActivities100.0100.0100.0100.0100.0100.00.0100.00.00.0100.0100.0100.0

us-gaap:RedeemablePreferredStockDividends



Period End2020-03-312019-12-312019-09-302019-03-312018-12-312018-09-30
Value219200118000
Percentage of RedeemablePreferredStockDividends100.0100.0100.00.00.00.0

us-gaap:ProductOrService, us-gaap:RelatedPartyTransactionsByRelatedParty

us-gaap:RelatedPartyTransactionPurchasesFromRelatedParty

oxy:Commodities, srt:AffiliatedEntity



Period End2020-03-31
Value219
Percentage of RelatedPartyTransactionPurchasesFromRelatedParty100.0

us-gaap:Service, srt:AffiliatedEntity



Period End2020-03-31
Value310
Percentage of RelatedPartyTransactionPurchasesFromRelatedParty141.6

us-gaap:ResultsOfOperationsExpenseFromOilAndGasProducingActivities



Period End2020-03-312019-12-312019-09-302019-03-312018-12-312018-09-30
Value1046922962645852680
Percentage of ResultsOfOperationsExpenseFromOilAndGasProducingActivities100.0100.0100.0100.0100.0100.0

us-gaap:ShortTermLeaseCost



Period End2020-03-312019-09-302019-06-302019-03-31
Value541397086
Percentage of ShortTermLeaseCost100.0100.0100.0100.0

us-gaap:TaxesExcludingIncomeAndExciseTaxes



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-312009-09-302009-06-302009-03-31
Value18227519812311110611011510876776861747579107107191199203186196186172167174152162151117127123105110105
Percentage of TaxesExcludingIncomeAndExciseTaxes100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:UndistributedEarningsLossAllocatedToParticipatingSecuritiesBasic



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-09-302017-06-302014-09-302014-06-302013-09-30
Value0-1033185312334
Percentage of UndistributedEarningsLossAllocatedToParticipatingSecuritiesBasic0.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:VariableLeaseCost



Period End2020-03-312019-09-302019-06-302019-03-31
Value38552931
Percentage of VariableLeaseCost100.0100.0100.0100.0

oxy:CurrentLiabilitiesAssociatedWithAssetsHeldforSale



Period End2020-03-312019-12-312019-09-302018-12-31
Value1891201022030
Percentage of CurrentLiabilitiesAssociatedWithAssetsHeldforSale100.0100.0100.00.0

us-gaap:Energy, us-gaap:DerivativeInstrumentRisk

oxy:DerivativeContractualCommodityPrice

srt:CrudeOil, oxy:Settlement2020



Period End2020-03-312019-12-312019-09-30
Value96.25128100.0109800.0
Percentage of DerivativeContractualCommodityPrice100.0100.0100.0

srt:CrudeOil, oxy:Settlement2021



Period End2020-03-312019-12-312019-09-30
Value127800.0127800.0109500.0
Percentage of DerivativeContractualCommodityPrice132779.299.899.7

us-gaap:DisposalGroupClassification, us-gaap:IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperations

oxy:DisposalGroupIncludingDiscontinuedOperationAssetRetirementObligationsNoncurrent

us-gaap:DiscontinuedOperationsDisposedOfBySale, oxy:AnadarkosAfricaAssets



Period End2020-03-312019-12-31
Value183181
Percentage of DisposalGroupIncludingDiscontinuedOperationAssetRetirementObligationsNoncurrent100.0100.0

us-gaap:DisposalGroupClassification, us-gaap:IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperations

oxy:DisposalGroupIncludingDiscontinuedOperationAssetsLiabilitiesNet

us-gaap:DiscontinuedOperationsDisposedOfBySale, oxy:AnadarkosAfricaAssets



Period End2020-03-312019-12-31
Value38414016
Percentage of DisposalGroupIncludingDiscontinuedOperationAssetsLiabilitiesNet100.0100.0

us-gaap:DisposalGroupClassification, us-gaap:IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperations

oxy:DisposalGroupIncludingDiscontinuedOperationLongtermDebtCurrent

us-gaap:DiscontinuedOperationsDisposedOfBySale, oxy:AnadarkosAfricaAssets



Period End2020-03-312019-12-31
Value399452
Percentage of DisposalGroupIncludingDiscontinuedOperationLongtermDebtCurrent100.0100.0

us-gaap:DisposalGroupClassification, us-gaap:IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperations

oxy:DisposalGroupIncludingDiscontinuedOperationLongtermDebtNoncurrent

us-gaap:DiscontinuedOperationsDisposedOfBySale, oxy:AnadarkosAfricaAssets



Period End2020-03-312019-12-31
Value183185
Percentage of DisposalGroupIncludingDiscontinuedOperationLongtermDebtNoncurrent100.0100.0

us-gaap:DisposalGroupClassification, us-gaap:IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperations

oxy:DisposalGroupIncludingDiscontinuedOperationNoncurrentReceivablesandOtherAssetsNet

us-gaap:DiscontinuedOperationsDisposedOfBySale, oxy:AnadarkosAfricaAssets



Period End2020-03-312019-12-31
Value119256
Percentage of DisposalGroupIncludingDiscontinuedOperationNoncurrentReceivablesandOtherAssetsNet100.0100.0

oxy:EnvironmentalRemediationSitesNumber



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302009-12-312008-12-31
Value177.0177.0185.0146.0146.0145.0146.0148.0149.0148.0148.0147.0147.0147.0150.0145.0149.0149.0148.0147.0146.0145.0153.0154.0156.0157.0160.0161.0162.0161.0159.0164.0160.0160.0169.0168.0168.0170.0169.0169.0168.0166.0
Percentage of EnvironmentalRemediationSitesNumber100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:EnvironmentalRemediationSite

oxy:ClosedOrNonOperatedEntitySites



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302012-12-312011-12-31
Value50.050.029.029.029.029.029.029.029.029.030.029.029.029.029.030.031.031.031.032.032.031.032.032.032.032.031.029.029.0
Percentage of EnvironmentalRemediationSitesNumber28.228.215.719.919.920.019.919.619.519.620.319.719.719.719.320.720.820.820.921.821.921.420.920.820.520.419.418.018.1

oxy:EntityOperatedSites



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302012-12-312011-12-31
Value17.017.014.014.014.014.014.015.015.015.015.017.017.017.017.017.018.018.018.018.017.017.019.020.020.020.022.022.022.0
Percentage of EnvironmentalRemediationSitesNumber9.69.67.69.69.69.79.610.110.110.110.111.611.611.611.311.712.112.112.212.211.611.712.413.012.812.713.813.713.8

oxy:NPLSites



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302012-12-312011-12-31
Value37.036.034.035.035.034.034.034.034.034.034.034.033.033.035.033.034.034.033.032.031.030.030.030.031.031.032.035.036.0
Percentage of EnvironmentalRemediationSitesNumber20.920.318.424.024.023.423.323.022.823.023.023.122.422.423.322.822.822.822.321.821.220.719.619.519.919.720.021.722.5

oxy:ThirdPartySites



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302012-12-312011-12-31
Value73.074.066.068.068.068.069.070.071.070.069.067.068.068.069.065.066.066.066.065.066.067.072.072.073.074.075.075.073.0
Percentage of EnvironmentalRemediationSitesNumber41.241.835.746.646.646.947.347.347.747.346.645.646.346.346.044.844.344.344.644.245.246.247.146.846.847.146.946.645.6

oxy:LeaseLiability



Period End2020-03-312019-12-31
Value15671821
Percentage of LeaseLiability100.0100.0

oxy:LeaseRightofUseAsset



Period End2020-03-312019-12-31
Value15361782
Percentage of LeaseRightofUseAsset100.0100.0

oxy:LongTermReceivablesAndOtherNoncurrentAssetsNet



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312008-12-31
Value1218240611557728018051122109410611067807869786943108010259759621100112110811091994826821840759806772760771781767746738773783798830770803766836
Percentage of LongTermReceivablesAndOtherNoncurrentAssetsNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AccruedEnvironmentalLossContingenciesCurrent



Period End2020-03-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-312008-12-31
Value117716212013713170797880-79798468
Percentage of AccruedEnvironmentalLossContingenciesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:BalanceSheetLocation

us-gaap:AccruedLiabilities



Period End2020-03-31
Value160
Percentage of AccruedEnvironmentalLossContingenciesCurrent13.6

us-gaap:EnvironmentalRemediationSite

oxy:ClosedOrNonOperatedEntitySites



Period End2020-03-31
Value265
Percentage of AccruedEnvironmentalLossContingenciesCurrent22.5

oxy:EntityOperatedSites



Period End2020-03-31
Value152
Percentage of AccruedEnvironmentalLossContingenciesCurrent12.9

oxy:NPLSites



Period End2020-03-31
Value459
Percentage of AccruedEnvironmentalLossContingenciesCurrent39.0

oxy:ThirdPartySites



Period End2020-03-31
Value301
Percentage of AccruedEnvironmentalLossContingenciesCurrent25.6

us-gaap:AccruedEnvironmentalLossContingenciesNoncurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-312008-12-31
Value10171035905764755762740731729728739316255252264-281287319371
Percentage of AccruedEnvironmentalLossContingenciesNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:BalanceSheetLocation

oxy:DeferredCreditsAndOtherLiabilities



Period End2020-03-31
Value1000
Percentage of AccruedEnvironmentalLossContingenciesNoncurrent98.3

us-gaap:AccruedLiabilitiesCurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312008-12-31
Value3310530251752067192024112813252120112492212820502155243622962141202522132202223021522601233723322346255624882331220319662282243423282440217422302856239721621923195823411861
Percentage of AccruedLiabilitiesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AdditionalPaidInCapital



Period End2020-03-312019-12-31
Value1508114955
Percentage of AdditionalPaidInCapital100.0100.0

us-gaap:AssetRetirementObligationsNoncurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-31
Value4428438541641433143014001249124412481241120010001024128312121030762619
Percentage of AssetRetirementObligationsNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AssetsHeldForSaleNotPartOfDisposalGroupCurrent



Period End2020-03-312019-12-312019-09-302018-12-31
Value573260261750746
Percentage of AssetsHeldForSaleNotPartOfDisposalGroupCurrent100.0100.0100.0100.0

us-gaap:DisposalGroupClassification, us-gaap:IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperations

us-gaap:AssetsOfDisposalGroupIncludingDiscontinuedOperation

us-gaap:DiscontinuedOperationsDisposedOfBySale, oxy:AnadarkosAfricaAssets



Period End2020-03-312019-12-31
Value57326026
Percentage of AssetsOfDisposalGroupIncludingDiscontinuedOperation100.0100.0

us-gaap:DerivativeInstrumentRisk

us-gaap:CollateralAlreadyPostedAggregateFairValue

us-gaap:InterestRateSwap



Period End2020-03-31
Value99
Percentage of CollateralAlreadyPostedAggregateFairValue100.0

us-gaap:HedgingDesignation

us-gaap:Nondesignated



Period End2020-03-312019-12-312019-09-302018-12-31
Value2041693001
Percentage of CollateralAlreadyPostedAggregateFairValue206.10.00.00.0

us-gaap:DebtInstrumentFaceAmount



Period End2020-03-312019-12-312016-04-302015-06-302011-08-31
Value3740137401275015002150
Percentage of DebtInstrumentFaceAmount100.0100.0100.0100.0100.0

us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementBasis

us-gaap:DebtInstrumentFairValue

us-gaap:FairValueInputsLevel2, us-gaap:EstimateOfFairValueFairValueDisclosure



Period End2020-03-312019-09-30
Value230012500
Percentage of DebtInstrumentFairValue100.0100.0

us-gaap:FairValueByMeasurementBasis

us-gaap:EstimateOfFairValueFairValueDisclosure



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302014-12-31
Value2180038800478001070010800103001040010400106001040010300102001010010200910091007900840087007000
Percentage of DebtInstrumentFairValue947.80.0382.40.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:DebtInstrumentUnamortizedPremium



Period End2020-03-312019-12-31
Value892914
Percentage of DebtInstrumentUnamortizedPremium100.0100.0

us-gaap:DeferredCreditsAndOtherLiabilitiesNoncurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312010-12-31
Value223272161221158538854044911489447464707472650865230521254315313569657955362589263626171621811067107771083910698106661031210074984996959226890486067012
Percentage of DeferredCreditsAndOtherLiabilitiesNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredFinanceCostsNet



Period End2020-03-312019-12-312019-09-302018-12-312017-12-312016-12-312015-12-31
Value11712514154475228
Percentage of DeferredFinanceCostsNet100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredIncomeTaxLiabilitiesNet



Period End2020-03-312019-12-312018-12-312017-12-31
Value94039717907581
Percentage of DeferredIncomeTaxLiabilitiesNet100.0100.0100.0100.0

us-gaap:BalanceSheetLocation, us-gaap:DerivativeInstrumentRisk

us-gaap:DerivativeAssetFairValueGrossLiabilityAndObligationToReturnCashOffset

oxy:LongTermReceivablesAndOtherAssetsNet, oxy:MarketingDerivatives



Period End2020-03-312019-12-312019-09-302018-12-31
Value914706
Percentage of DerivativeAssetFairValueGrossLiabilityAndObligationToReturnCashOffset100.0100.0100.0100.0

us-gaap:OtherCurrentAssets, oxy:MarketingDerivatives



Period End2020-03-312019-12-312019-09-302018-12-31
Value64459738612392
Percentage of DerivativeAssetFairValueGrossLiabilityAndObligationToReturnCashOffset7082.424325.01230.039866.7

us-gaap:OtherCurrentAssets, oxy:OilCollarsAndCalls



Period End2020-03-312019-12-312019-09-30
Value004
Percentage of DerivativeAssetFairValueGrossLiabilityAndObligationToReturnCashOffset0.00.05.7

us-gaap:BalanceSheetLocation, us-gaap:DerivativeInstrumentRisk

us-gaap:DerivativeAssets

oxy:LongTermReceivablesAndOtherAssetsNet, oxy:MarketingDerivatives



Period End2020-03-312019-12-312019-09-302018-12-31
Value1912128
Percentage of DerivativeAssets100.0100.0100.0100.0

oxy:LongTermReceivablesAndOtherAssetsNet, us-gaap:InterestRateSwap



Period End2020-03-312019-12-312019-09-30
Value1513
Percentage of DerivativeAssets5.341.7108.3

us-gaap:OtherCurrentAssets, oxy:MarketingDerivatives



Period End2020-03-312019-12-312019-09-302018-12-31
Value3855174249
Percentage of DerivativeAssets2026.3425.0616.73112.5

us-gaap:OtherCurrentAssets, oxy:OilCollarsAndCalls



Period End2020-03-312019-12-312019-09-30
Value83492213
Percentage of DerivativeAssets4389.5766.71775.0

us-gaap:OtherCurrentAssets, us-gaap:InterestRateSwap



Period End2020-03-312019-12-312019-09-30
Value1514
Percentage of DerivativeAssets5.341.7116.7

us-gaap:Energy, us-gaap:DerivativeInstrumentRisk, us-gaap:Position

us-gaap:DerivativeAverageCapPrice

srt:CrudeOil, oxy:Settlement2020, us-gaap:Short



Period End2020-03-312019-12-312019-09-30
Value74.1674.1674.09
Percentage of DerivativeAverageCapPrice100.0100.0100.0

srt:CrudeOil, oxy:Settlement2021, us-gaap:Short



Period End2020-03-312019-12-312019-09-30
Value74.1674.1674.09
Percentage of DerivativeAverageCapPrice100.0100.0100.0

us-gaap:DerivativeInstrumentRisk

us-gaap:DerivativeAverageFixedInterestRate

oxy:InterestRateSwapMandatoryTerminationDateSeptember20206.891



Period End2020-03-312019-12-312019-09-30
Value0.066620.068910.06891
Percentage of DerivativeAverageFixedInterestRate100.0100.0100.0

oxy:InterestRateSwapMandatoryTerminationDateSeptember20216.570



Period End2020-03-312019-12-312019-09-30
Value0.067090.06570.0657
Percentage of DerivativeAverageFixedInterestRate100.795.395.3

oxy:InterestRateSwapMandatoryTerminationDateSeptember20226.835



Period End2020-03-312019-12-312019-09-30
Value0.063480.068350.06835
Percentage of DerivativeAverageFixedInterestRate95.399.299.2

us-gaap:BalanceSheetLocation, us-gaap:DerivativeInstrumentRisk, us-gaap:FairValueByFairValueHierarchyLevel

us-gaap:DerivativeFairValueOfDerivativeAsset

oxy:LongTermReceivablesAndOtherAssetsNet, oxy:MarketingDerivatives, us-gaap:FairValueInputsLevel1



Period End2020-03-312019-12-312019-09-302018-12-31
Value914705
Percentage of DerivativeFairValueOfDerivativeAsset100.0100.0100.0100.0

oxy:LongTermReceivablesAndOtherAssetsNet, oxy:MarketingDerivatives, us-gaap:FairValueInputsLevel2



Period End2020-03-312019-12-312019-09-302018-12-31
Value1912129
Percentage of DerivativeFairValueOfDerivativeAsset20.9300.017.1180.0

oxy:LongTermReceivablesAndOtherAssetsNet, us-gaap:InterestRateSwap, us-gaap:FairValueInputsLevel2



Period End2020-03-312019-12-312019-09-30
Value1513
Percentage of DerivativeFairValueOfDerivativeAsset1.1125.018.6

us-gaap:OtherCurrentAssets, oxy:MarketingDerivatives, us-gaap:FairValueInputsLevel1



Period End2020-03-312019-12-312019-09-302018-12-31
Value64389458382531
Percentage of DerivativeFairValueOfDerivativeAsset7074.723625.01197.150620.0

us-gaap:OtherCurrentAssets, oxy:MarketingDerivatives, us-gaap:FairValueInputsLevel2



Period End2020-03-312019-12-312019-09-302018-12-31
Value3927997110
Percentage of DerivativeFairValueOfDerivativeAsset430.81975.0138.62200.0

us-gaap:OtherCurrentAssets, oxy:OilCollarsAndCalls, us-gaap:FairValueInputsLevel2



Period End2020-03-312019-12-312019-09-30
Value83492217
Percentage of DerivativeFairValueOfDerivativeAsset916.52300.0310.0

us-gaap:OtherCurrentAssets, us-gaap:InterestRateSwap, us-gaap:FairValueInputsLevel2



Period End2020-03-312019-12-312019-09-30
Value1514
Percentage of DerivativeFairValueOfDerivativeAsset1.1125.020.0

us-gaap:BalanceSheetLocation, us-gaap:DerivativeInstrumentRisk, us-gaap:FairValueByFairValueHierarchyLevel

us-gaap:DerivativeFairValueOfDerivativeLiability

oxy:DeferredCreditsAndOtherLiabilities, oxy:MarketingDerivatives, us-gaap:FairValueInputsLevel1



Period End2020-03-312019-12-312019-09-302018-12-31
Value-91-4716
Percentage of DerivativeFairValueOfDerivativeLiability100.0100.0100.0100.0

oxy:DeferredCreditsAndOtherLiabilities, oxy:MarketingDerivatives, us-gaap:FairValueInputsLevel2



Period End2020-03-312019-12-312019-09-302018-12-31
Value-1-112
Percentage of DerivativeFairValueOfDerivativeLiability1.125.01.433.3

oxy:DeferredCreditsAndOtherLiabilities, oxy:OilCollarsAndCalls, us-gaap:FairValueInputsLevel2



Period End2020-03-312019-12-312019-09-30
Value-58-16097
Percentage of DerivativeFairValueOfDerivativeLiability63.74000.0136.6

oxy:DeferredCreditsAndOtherLiabilities, us-gaap:InterestRateSwap, us-gaap:FairValueInputsLevel2



Period End2020-03-312019-12-312019-09-30
Value-1954-776879
Percentage of DerivativeFairValueOfDerivativeLiability2147.319400.01238.0

oxy:DeferredCreditsAndOtherLiabilities, us-gaap:Warrant, us-gaap:FairValueInputsLevel2



Period End2020-03-312019-12-312019-09-30
Value-23-107168
Percentage of DerivativeFairValueOfDerivativeLiability25.32675.0236.6

us-gaap:AccruedLiabilities, oxy:MarketingDerivatives, us-gaap:FairValueInputsLevel1



Period End2020-03-312019-12-312019-09-302018-12-31
Value-6170-10088272357
Percentage of DerivativeFairValueOfDerivativeLiability6780.225200.01164.839283.3

us-gaap:AccruedLiabilities, oxy:MarketingDerivatives, us-gaap:FairValueInputsLevel2



Period End2020-03-312019-12-312019-09-302018-12-31
Value-367-4445101
Percentage of DerivativeFairValueOfDerivativeLiability403.31100.063.41683.3

us-gaap:AccruedLiabilities, us-gaap:InterestRateSwap, us-gaap:FairValueInputsLevel2



Period End2020-03-312019-12-312019-09-30
Value-90-657882
Percentage of DerivativeFairValueOfDerivativeLiability98.916425.01242.3

us-gaap:BalanceSheetLocation, us-gaap:DerivativeInstrumentRisk

us-gaap:DerivativeLiabilities

oxy:DeferredCreditsAndOtherLiabilities, oxy:MarketingDerivatives



Period End2020-03-312019-12-312019-09-302018-12-31
Value-1-122
Percentage of DerivativeLiabilities100.0100.0100.0100.0

oxy:DeferredCreditsAndOtherLiabilities, oxy:OilCollarsAndCalls



Period End2020-03-312019-12-312019-09-30
Value-58-16097
Percentage of DerivativeLiabilities5800.016000.04850.0

oxy:DeferredCreditsAndOtherLiabilities, us-gaap:InterestRateSwap



Period End2020-03-312019-12-312019-09-30
Value-1954-776879
Percentage of DerivativeLiabilities195400.077600.043950.0

oxy:DeferredCreditsAndOtherLiabilities, us-gaap:Warrant



Period End2020-03-312019-12-312019-09-30
Value-23-107168
Percentage of DerivativeLiabilities2300.010700.08400.0

us-gaap:AccruedLiabilities, oxy:MarketingDerivatives



Period End2020-03-312019-12-312019-09-302018-12-31
Value-92-791166
Percentage of DerivativeLiabilities9200.07900.0550.03300.0

us-gaap:AccruedLiabilities, us-gaap:InterestRateSwap



Period End2020-03-312019-12-312019-09-30
Value-90-657882
Percentage of DerivativeLiabilities9000.065700.044100.0

us-gaap:DerivativeInstrumentRisk

us-gaap:DerivativeLiabilityCollateralRightToReclaimCashOffset

us-gaap:InterestRateSwap



Period End2020-03-312019-12-312019-09-30
Value204104359
Percentage of DerivativeLiabilityCollateralRightToReclaimCashOffset100.0100.0100.0

us-gaap:DerivativeInstrumentRisk, us-gaap:SubsequentEventType

us-gaap:InterestRateSwap, us-gaap:SubsequentEvent



Period End2020-05-05
Value225
Percentage of DerivativeLiabilityCollateralRightToReclaimCashOffset0.0

us-gaap:BalanceSheetLocation, us-gaap:DerivativeInstrumentRisk

us-gaap:DerivativeLiabilityFairValueGrossAssetAndRightToReclaimCashOffset

oxy:DeferredCreditsAndOtherLiabilities, oxy:MarketingDerivatives



Period End2020-03-312019-12-312019-09-302018-12-31
Value914706
Percentage of DerivativeLiabilityFairValueGrossAssetAndRightToReclaimCashOffset100.0100.0100.0100.0

us-gaap:AccruedLiabilities, oxy:MarketingDerivatives



Period End2020-03-312019-12-312019-09-302018-12-31
Value64459738612392
Percentage of DerivativeLiabilityFairValueGrossAssetAndRightToReclaimCashOffset7082.424325.01230.039866.7

us-gaap:HedgingDesignation

us-gaap:DerivativeNetLiabilityPositionAggregateFairValue

us-gaap:Nondesignated



Period End2020-03-312019-12-312019-09-302018-12-31
Value244787160068
Percentage of DerivativeNetLiabilityPositionAggregateFairValue100.0100.0100.0100.0

us-gaap:DerivativeInstrumentRisk

us-gaap:DerivativeNotionalAmount

oxy:InterestRateSwapMandatoryTerminationDateSeptember20206.891



Period End2020-03-312019-12-312019-09-30
Value350100100
Percentage of DerivativeNotionalAmount100.0100.0100.0

oxy:InterestRateSwapMandatoryTerminationDateSeptember20216.570



Period End2020-03-312019-12-312019-09-30
Value275250250
Percentage of DerivativeNotionalAmount78.6250.0250.0

oxy:InterestRateSwapMandatoryTerminationDateSeptember20226.835



Period End2020-03-312019-12-312019-10-312019-09-30
Value400125125125
Percentage of DerivativeNotionalAmount114.3125.00.0125.0

us-gaap:DerivativeInstrumentRisk, us-gaap:SubsequentEventType

oxy:InterestRateSwapMandatoryTerminationDateSeptember20216.570, us-gaap:SubsequentEvent



Period End2020-01-31
Value500
Percentage of DerivativeNotionalAmount0.0

oxy:InterestRateSwapMandatoryTerminationDateSeptember20226.835, us-gaap:SubsequentEvent



Period End2020-02-27
Value150
Percentage of DerivativeNotionalAmount0.0

us-gaap:DisposalGroupClassification, us-gaap:IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperations

us-gaap:DisposalGroupIncludingDiscontinuedOperationCashAndCashEquivalents

us-gaap:DiscontinuedOperationsDisposedOfBySale, oxy:AnadarkosAfricaAssets



Period End2020-03-312019-12-31
Value378289
Percentage of DisposalGroupIncludingDiscontinuedOperationCashAndCashEquivalents100.0100.0

us-gaap:DisposalGroupClassification, us-gaap:IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperations

us-gaap:DisposalGroupIncludingDiscontinuedOperationDeferredTaxLiabilities

us-gaap:DiscontinuedOperationsDisposedOfBySale, oxy:AnadarkosAfricaAssets



Period End2020-03-312019-12-31
Value10961112
Percentage of DisposalGroupIncludingDiscontinuedOperationDeferredTaxLiabilities100.0100.0

us-gaap:DisposalGroupClassification, us-gaap:IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperations

us-gaap:DisposalGroupIncludingDiscontinuedOperationOtherNoncurrentLiabilities

us-gaap:DiscontinuedOperationsDisposedOfBySale, oxy:AnadarkosAfricaAssets



Period End2020-03-312019-12-31
Value3080
Percentage of DisposalGroupIncludingDiscontinuedOperationOtherNoncurrentLiabilities100.0100.0

us-gaap:DisposalGroupClassification, us-gaap:IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperations

us-gaap:DisposalGroupIncludingDiscontinuedOperationPropertyPlantAndEquipmentNoncurrent

us-gaap:DiscontinuedOperationsDisposedOfBySale, oxy:AnadarkosAfricaAssets



Period End2020-03-312019-12-31
Value52355481
Percentage of DisposalGroupIncludingDiscontinuedOperationPropertyPlantAndEquipmentNoncurrent100.0100.0

us-gaap:BalanceSheetLocation, us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency

us-gaap:EmbeddedDerivativeFairValueOfEmbeddedDerivativeLiability

oxy:DeferredCreditsAndOtherLiabilities, us-gaap:FairValueInputsLevel2, us-gaap:FairValueMeasurementsRecurring



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value67497373741165386147
Percentage of EmbeddedDerivativeFairValueOfEmbeddedDerivativeLiability100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AccruedLiabilities, us-gaap:FairValueInputsLevel2, us-gaap:FairValueMeasurementsRecurring



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-31
Value10540544338661117313954645343
Percentage of EmbeddedDerivativeFairValueOfEmbeddedDerivativeLiability156.781.674.058.951.456.920.819.80.026.50.00.00.00.0

us-gaap:BalanceSheetLocation, us-gaap:FairValueByMeasurementBasis, us-gaap:FairValueByMeasurementFrequency

oxy:DeferredCreditsAndOtherLiabilities, us-gaap:EstimateOfFairValueFairValueDisclosure, us-gaap:FairValueMeasurementsRecurring



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value67497373741165386147
Percentage of EmbeddedDerivativeFairValueOfEmbeddedDerivativeLiability100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AccruedLiabilities, us-gaap:EstimateOfFairValueFairValueDisclosure, us-gaap:FairValueMeasurementsRecurring



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312015-12-31
Value1054054433866111731395464534347
Percentage of EmbeddedDerivativeFairValueOfEmbeddedDerivativeLiability156.781.674.058.951.456.920.819.80.026.50.00.00.00.00.0

us-gaap:EquityMethodInvestments



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-31
Value605063893684177717251680156815511509151515261572143614011420136013011267142813301221117115001900210020001700
Percentage of EquityMethodInvestments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName

oxy:WesternMidstreamPartnersLP



Period End2020-03-312019-12-31
Value48005100
Percentage of EquityMethodInvestments79.379.8

us-gaap:FinanceLeaseLiability



Period End2020-03-312019-12-312019-09-302019-08-08
Value34639810086
Percentage of FinanceLeaseLiability100.0100.0100.0100.0

us-gaap:PropertyPlantAndEquipmentByType

oxy:OilAndGasExplorationAndDevelopmentEquipmentRestateOfficesCompressorsAndFieldEquipment



Period End2020-03-312019-12-312019-09-30
Value347398100
Percentage of FinanceLeaseLiability100.3100.0100.0

us-gaap:FinanceLeaseLiabilityCurrent



Period End2020-03-312019-12-31
Value3851
Percentage of FinanceLeaseLiabilityCurrent100.0100.0

us-gaap:FinanceLeaseLiabilityNoncurrent



Period End2020-03-312019-12-312019-09-30
Value30834769
Percentage of FinanceLeaseLiabilityNoncurrent100.0100.0100.0

us-gaap:FinanceLeaseRightOfUseAsset



Period End2020-03-312019-12-31
Value343397
Percentage of FinanceLeaseRightOfUseAsset100.0100.0

us-gaap:InventoryGross



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302009-12-31
Value1476148716481629153113071052139211001289104296110449069779561047103612111209122311411450141413991291142914411407144513951597134811671321127411631113120813011162
Percentage of InventoryGross100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:InventoryRawMaterials



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302009-12-31
Value6975676871746968686674796665777377736974737180788174747574706065706968696463595763
Percentage of InventoryRawMaterials100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DisposalGroupClassification, us-gaap:IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperations

us-gaap:LiabilitiesOfDisposalGroupIncludingDiscontinuedOperation

us-gaap:DiscontinuedOperationsDisposedOfBySale, oxy:AnadarkosAfricaAssets



Period End2020-03-312019-12-31
Value18912010
Percentage of LiabilitiesOfDisposalGroupIncludingDiscontinuedOperation100.0100.0

us-gaap:OperatingLeaseLiabilityCurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-31
Value453569463252240
Percentage of OperatingLeaseLiabilityCurrent100.0100.0100.0100.0100.0

us-gaap:OperatingLeaseLiabilityNoncurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-31
Value768854676445465
Percentage of OperatingLeaseLiabilityNoncurrent100.0100.0100.0100.0100.0

us-gaap:OtherInventorySupplies



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302009-12-31
Value902879916531470445434466470447449453452446503502504568601638617585657643630628647641643612590534475443459433431414488506515
Percentage of OtherInventorySupplies100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PreferredStockSharesOutstanding



Period End2020-03-312019-12-312019-09-302018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value100000.0100000.0100000.00.00.00.00.00.00.00.00.0
Percentage of PreferredStockSharesOutstanding100.0100.0100.00.00.00.00.00.00.00.00.0

us-gaap:PreferredStockValue



Period End2020-03-312019-12-312019-09-302018-12-31
Value9762976297620
Percentage of PreferredStockValue100.0100.0100.00.0

us-gaap:RestrictedCashAndCashEquivalentsAtCarryingValue



Period End2020-03-312019-12-312019-09-302018-12-31
Value2424804540
Percentage of RestrictedCashAndCashEquivalentsAtCarryingValue100.0100.0100.00.0

us-gaap:RevenueRemainingPerformanceObligation



Period End2020-03-312019-12-312019-09-30
Value9210392
Percentage of RevenueRemainingPerformanceObligation100.0100.0100.0

us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312011-12-312010-12-312010-09-302010-06-302010-03-312009-12-312008-12-312007-12-31
Value3129534232410052134721236213302149320931207222057220669210372107921497222962310123789243502988233302341643495944085438124336943372429684185040940400483762032484318443091230037291592732522858
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StatementEquityComponents

us-gaap:AccumulatedOtherComprehensiveIncome



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-312008-12-312007-12-312006-12-31
Value-334-221-332-184-168-172-155-308-312-258-266-307-357-303-502-483-524-596-552-632-333
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest-1.1-0.6-0.8-0.9-0.8-0.8-0.7-1.5-1.5-1.3-1.2-1.3-1.0-0.7-1.3-1.3-1.6-2.0-2.0-2.80.0

us-gaap:AdditionalPaidInCapital



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-312008-12-312007-12-312006-12-31
Value150811495514867815780838046799179677916788477477640759975157441728671917127711370716905
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest48.243.736.338.238.137.737.238.138.238.336.031.421.717.318.619.422.124.426.030.90.0

us-gaap:CommonStock



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-312008-12-312007-12-312006-12-31
Value210209209179179179179179179179178178178178178177177177176175174
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest0.70.60.50.80.80.80.80.90.90.90.80.70.50.40.40.50.50.60.60.80.0

us-gaap:PreferredStock



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-312016-12-31
Value9762976297620000000
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest31.228.523.80.00.00.00.00.00.00.0

us-gaap:RetainedEarnings



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-312008-12-312007-12-312006-12-31
Value172292018022227238482379523750236352236122107219352298125960360674183137990351422986826534246841881913987
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest55.159.054.2111.7112.1111.3110.0106.8106.7106.6106.9106.6103.296.494.993.491.991.090.382.30.0

us-gaap:TreasuryStock



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-312008-12-312007-12-312006-12-31
Value-10653-10653-10653-10653-10653-10473-10162-9268-9168-9168-9143-9121-8528-6095-5091-4502-4228-4161-4121-2610-1481
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest-34.0-31.1-26.0-49.9-50.2-49.1-47.3-44.3-44.2-44.6-42.5-37.5-24.4-14.1-12.7-12.0-13.0-14.3-15.1-11.40.0

us-gaap:TreasuryStockShares



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-312008-12-31
Value148150150148148145140129128128128128127127127127-127127127127122119938375727171
Percentage of TreasuryStockShares100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Line plots across dimensions of each concept

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:StatementGeographical


us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:StatementBusinessSegments


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


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


us-gaap:Revenues us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments


us-gaap:IncomeLossFromContinuingOperations us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments


us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments


us-gaap:PropertyPlantAndEquipmentGross us-gaap:StatementBusinessSegments