| 2021-06-30 | 2020-06-30 | ||
|---|---|---|---|
| us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding | █▁ | 379.0 | 378.0 |
| us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount | ▁█ | 3.4 | 5.2 |
| us-gaap:EarningsPerShareBasic | █▁ | 0.83 | -1.02 |
| us-gaap:EarningsPerShareDiluted | █▁ | 0.82 | -1.02 |
| 2021-06-30 | 2020-06-30 | ||
|---|---|---|---|
| COGS Ratio us-gaap:ConsolidationItems,us-gaap:ProductOrService,us-gaap:StatementBusinessSegments srt:ReportableLegalEntities,us-gaap:OilAndGasPurchased,apa:AltusMidstreamSegment | ▄ | 3.0 | NA |
| COGS Ratio us-gaap:ConsolidationItems,us-gaap:ProductOrService,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,apa:OilAndGasExcludingPurchased,apa:NorthSea | NA | NA | |
| COGS Ratio us-gaap:ConsolidationItems,us-gaap:ProductOrService,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,apa:OilAndGasExcludingPurchased,apa:SegmentEgypt | NA | NA | |
| COGS Ratio us-gaap:ConsolidationItems,us-gaap:ProductOrService,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,apa:OilAndGasExcludingPurchased,apa:SegmentUnitedStates | NA | NA | |
| COGS Ratio us-gaap:ConsolidationItems,us-gaap:ProductOrService,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,us-gaap:OilAndGasPurchased,apa:SegmentUnitedStates | █▁ | 239.0 | 54.0 |
| COGS Ratio us-gaap:ProductOrService us-gaap:OilAndGasPurchased | █▁ | 242.0 | 55.0 |
| Net profit Margin us-gaap:EquityMethodInvestmentNonconsolidatedInvestee us-gaap:EquityMethodInvestmentNonconsolidatedInvesteeOrGroupOfInvestees | █▁ | 277.0 | 175.0 |
| Operating Margin us-gaap:ConsolidationItems,us-gaap:StatementBusinessSegments srt:ReportableLegalEntities,apa:AltusMidstreamSegment | █▁ | 32.0 | 31.0 |
| Operating Margin us-gaap:EquityMethodInvestmentNonconsolidatedInvestee us-gaap:EquityMethodInvestmentNonconsolidatedInvesteeOrGroupOfInvestees | █▁ | 277.0 | 175.0 |
| 2021-06-30 | 2020-06-30 | ||
|---|---|---|---|
| TTM Greenblatt ROC _ _ | ▄ | 666.0 | NA |
| 2021-06-30 | 2020-06-30 | ||
|---|---|---|---|
| us-gaap:ComprehensiveIncomeNetOfTax | █▁ | 316.0 | -386.0 |
| us-gaap:ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest us-gaap:StatementClassOfStock us-gaap:RedeemablePreferredStock | █▁ | 24.0 | 19.0 |
| us-gaap:ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest us-gaap:StatementEquityComponents apa:NoncontrollingInterestALTM | █▁ | 27.0 | 0.0 |
| us-gaap:ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest us-gaap:StatementEquityComponents apa:NoncontrollingInterestEgypt | █▁ | 41.0 | -11.0 |
| us-gaap:ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest | █▁ | 408.0 | -378.0 |
| us-gaap:CostOfGoodsAndServicesSold us-gaap:ConsolidationItems,us-gaap:ProductOrService,us-gaap:StatementBusinessSegments srt:ReportableLegalEntities,apa:OilAndGasExcludingPurchased,apa:AltusMidstreamSegment | ▁█ | 8.0 | 10.0 |
| us-gaap:CostOfGoodsAndServicesSold us-gaap:ConsolidationItems,us-gaap:ProductOrService,us-gaap:StatementBusinessSegments srt:ReportableLegalEntities,us-gaap:OilAndGasPurchased,apa:AltusMidstreamSegment | ▄ | 3.0 | NA |
| us-gaap:CostOfGoodsAndServicesSold us-gaap:ConsolidationItems,us-gaap:ProductOrService,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,apa:OilAndGasExcludingPurchased,apa:NorthSea | ▁█ | 8.0 | 11.0 |
| us-gaap:CostOfGoodsAndServicesSold us-gaap:ConsolidationItems,us-gaap:ProductOrService,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,apa:OilAndGasExcludingPurchased,apa:SegmentEgypt | ▁█ | 3.0 | 13.0 |
| us-gaap:CostOfGoodsAndServicesSold us-gaap:ConsolidationItems,us-gaap:ProductOrService,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,apa:OilAndGasExcludingPurchased,apa:SegmentUnitedStates | █▁ | 74.0 | 70.0 |
| us-gaap:CostOfGoodsAndServicesSold us-gaap:ConsolidationItems,us-gaap:ProductOrService,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,us-gaap:OilAndGasPurchased,apa:SegmentUnitedStates | █▁ | 259.0 | 46.0 |
| us-gaap:CostOfGoodsAndServicesSold us-gaap:ProductOrService apa:OilAndGasExcludingPurchased | ▁█ | 61.0 | 72.0 |
| us-gaap:CostOfGoodsAndServicesSold us-gaap:ProductOrService us-gaap:OilAndGasPurchased | █▁ | 262.0 | 46.0 |
| us-gaap:CostsAndExpenses | █▁ | 1287.0 | 1012.0 |
| us-gaap:GainsLossesOnExtinguishmentOfDebt | ▁█ | 1.0 | 140.0 |
| us-gaap:GeneralAndAdministrativeExpense | ▁█ | 86.0 | 94.0 |
| us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments | █▁ | 495.0 | -416.0 |
| us-gaap:IncomeTaxesPaidNet | █▁ | 107.0 | -18.0 |
| us-gaap:InterestExpenseDebt | █▁ | 110.0 | 107.0 |
| us-gaap:InterestPaidNet | █▁ | 120.0 | 86.0 |
| us-gaap:NetIncomeLossAttributableToNoncontrollingInterest | NA | NA | |
| us-gaap:NetIncomeLossAttributableToNoncontrollingInterest dei:LegalEntity,us-gaap:StatementClassOfStock apa:AltusMidstreamLP,us-gaap:RedeemablePreferredStock | ▄ | 20.0 | NA |
| us-gaap:NetIncomeLossAttributableToNoncontrollingInterest us-gaap:StatementClassOfStock us-gaap:RedeemablePreferredStock | █▁ | 24.0 | 19.0 |
| us-gaap:NetIncomeLossAttributableToNoncontrollingInterest us-gaap:StatementEquityComponents apa:NoncontrollingInterestALTM | █▁ | 27.0 | 0.0 |
| us-gaap:NetIncomeLossAttributableToNoncontrollingInterest us-gaap:StatementEquityComponents apa:NoncontrollingInterestEgypt | █▁ | 41.0 | -11.0 |
| us-gaap:NetIncomeLossAvailableToCommonStockholdersBasic | █▁ | 316.0 | -386.0 |
| us-gaap:NetIncomeLossAvailableToCommonStockholdersDiluted | █▁ | 310.0 | -386.0 |
| us-gaap:OperatingExpenses | █▁ | 1090.0 | 942.0 |
| us-gaap:OperatingIncomeLoss | █▁ | 666.0 | -190.0 |
| us-gaap:OtherComprehensiveIncomeLossNetOfTax us-gaap:EquityMethodInvestmentNonconsolidatedInvestee us-gaap:EquityMethodInvestmentNonconsolidatedInvesteeOrGroupOfInvestees | ▁█ | 0.0 | 3.0 |
| us-gaap:OtherNonoperatingIncomeExpense | █▁ | 74.0 | 19.0 |
| us-gaap:ProfitLoss | █▁ | 408.0 | -378.0 |
| us-gaap:RevenueFromContractWithCustomerIncludingAssessedTax us-gaap:ConsolidationItems,us-gaap:ProductOrService us-gaap:IntersegmentElimination,us-gaap:OilAndGas | NA | NA | |
| us-gaap:RevenueFromContractWithCustomerIncludingAssessedTax us-gaap:ConsolidationItems,us-gaap:ProductOrService,us-gaap:ReserveQuantitiesByTypeOfReserve,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,apa:OilAndGasExcludingPurchased,srt:NaturalGasLiquidsReserves,apa:NorthSea | NA | NA | |
| us-gaap:RevenueFromContractWithCustomerIncludingAssessedTax us-gaap:ConsolidationItems,us-gaap:ProductOrService,us-gaap:ReserveQuantitiesByTypeOfReserve,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,apa:OilAndGasExcludingPurchased,srt:NaturalGasLiquidsReserves,apa:SegmentEgypt | NA | NA | |
| us-gaap:RevenueFromContractWithCustomerIncludingAssessedTax us-gaap:ConsolidationItems,us-gaap:ProductOrService,us-gaap:ReserveQuantitiesByTypeOfReserve,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,apa:OilAndGasExcludingPurchased,srt:NaturalGasLiquidsReserves,apa:SegmentUnitedStates | NA | NA | |
| us-gaap:RevenueFromContractWithCustomerIncludingAssessedTax us-gaap:ConsolidationItems,us-gaap:ProductOrService,us-gaap:ReserveQuantitiesByTypeOfReserve,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,apa:OilAndGasExcludingPurchased,srt:NaturalGasReserves,apa:NorthSea | NA | NA | |
| us-gaap:RevenueFromContractWithCustomerIncludingAssessedTax us-gaap:ConsolidationItems,us-gaap:ProductOrService,us-gaap:ReserveQuantitiesByTypeOfReserve,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,apa:OilAndGasExcludingPurchased,srt:NaturalGasReserves,apa:SegmentEgypt | NA | NA | |
| us-gaap:RevenueFromContractWithCustomerIncludingAssessedTax us-gaap:ConsolidationItems,us-gaap:ProductOrService,us-gaap:ReserveQuantitiesByTypeOfReserve,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,apa:OilAndGasExcludingPurchased,srt:NaturalGasReserves,apa:SegmentUnitedStates | NA | NA | |
| us-gaap:RevenueFromContractWithCustomerIncludingAssessedTax us-gaap:ConsolidationItems,us-gaap:ProductOrService,us-gaap:ReserveQuantitiesByTypeOfReserve,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,apa:OilAndGasExcludingPurchased,srt:OilReserves,apa:NorthSea | NA | NA | |
| us-gaap:RevenueFromContractWithCustomerIncludingAssessedTax us-gaap:ConsolidationItems,us-gaap:ProductOrService,us-gaap:ReserveQuantitiesByTypeOfReserve,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,apa:OilAndGasExcludingPurchased,srt:OilReserves,apa:SegmentEgypt | NA | NA | |
| us-gaap:RevenueFromContractWithCustomerIncludingAssessedTax us-gaap:ConsolidationItems,us-gaap:ProductOrService,us-gaap:ReserveQuantitiesByTypeOfReserve,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,apa:OilAndGasExcludingPurchased,srt:OilReserves,apa:SegmentUnitedStates | NA | NA | |
| us-gaap:RevenueFromContractWithCustomerIncludingAssessedTax us-gaap:ConsolidationItems,us-gaap:ProductOrService,us-gaap:StatementBusinessSegments srt:ReportableLegalEntities,us-gaap:OilAndGas,apa:AltusMidstreamSegment | NA | NA | |
| us-gaap:RevenueFromContractWithCustomerIncludingAssessedTax us-gaap:ConsolidationItems,us-gaap:ProductOrService,us-gaap:StatementBusinessSegments srt:ReportableLegalEntities,us-gaap:OilAndGasPurchased,apa:AltusMidstreamSegment | █▁ | 3.0 | 1.0 |
| us-gaap:RevenueFromContractWithCustomerIncludingAssessedTax us-gaap:ConsolidationItems,us-gaap:ProductOrService,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,apa:OilAndGasExcludingPurchased,apa:NorthSea | NA | NA | |
| us-gaap:RevenueFromContractWithCustomerIncludingAssessedTax us-gaap:ConsolidationItems,us-gaap:ProductOrService,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,apa:OilAndGasExcludingPurchased,apa:SegmentEgypt | NA | NA | |
| us-gaap:RevenueFromContractWithCustomerIncludingAssessedTax us-gaap:ConsolidationItems,us-gaap:ProductOrService,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,apa:OilAndGasExcludingPurchased,apa:SegmentUnitedStates | NA | NA | |
| us-gaap:RevenueFromContractWithCustomerIncludingAssessedTax us-gaap:ConsolidationItems,us-gaap:ProductOrService,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,us-gaap:OilAndGas,apa:NorthSea | NA | NA | |
| us-gaap:RevenueFromContractWithCustomerIncludingAssessedTax us-gaap:ConsolidationItems,us-gaap:ProductOrService,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,us-gaap:OilAndGas,apa:SegmentEgypt | NA | NA | |
| us-gaap:RevenueFromContractWithCustomerIncludingAssessedTax us-gaap:ConsolidationItems,us-gaap:ProductOrService,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,us-gaap:OilAndGas,apa:SegmentUnitedStates | NA | NA | |
| us-gaap:RevenueFromContractWithCustomerIncludingAssessedTax us-gaap:ConsolidationItems,us-gaap:ProductOrService,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,us-gaap:OilAndGasPurchased,apa:SegmentUnitedStates | █▁ | 239.0 | 54.0 |
| us-gaap:RevenueFromContractWithCustomerIncludingAssessedTax us-gaap:ConsolidationItems,us-gaap:StatementBusinessSegments srt:ReportableLegalEntities,apa:AltusMidstreamSegment | █▁ | 32.0 | 31.0 |
| us-gaap:RevenueFromContractWithCustomerIncludingAssessedTax us-gaap:ProductOrService apa:OilAndGasExcludingPurchased | █▁ | 1407.0 | 715.0 |
| us-gaap:RevenueFromContractWithCustomerIncludingAssessedTax us-gaap:ProductOrService us-gaap:OilAndGas | NA | NA | |
| us-gaap:RevenueFromContractWithCustomerIncludingAssessedTax us-gaap:ProductOrService us-gaap:OilAndGasPurchased | █▁ | 242.0 | 55.0 |
| us-gaap:RevenueFromContractWithCustomerIncludingAssessedTax us-gaap:ProductOrService,us-gaap:ReserveQuantitiesByTypeOfReserve apa:OilAndGasExcludingPurchased,srt:NaturalGasLiquidsReserves | NA | NA | |
| us-gaap:RevenueFromContractWithCustomerIncludingAssessedTax us-gaap:ProductOrService,us-gaap:ReserveQuantitiesByTypeOfReserve apa:OilAndGasExcludingPurchased,srt:NaturalGasReserves | NA | NA | |
| us-gaap:RevenueFromContractWithCustomerIncludingAssessedTax us-gaap:ProductOrService,us-gaap:ReserveQuantitiesByTypeOfReserve apa:OilAndGasExcludingPurchased,srt:OilReserves | NA | NA | |
| us-gaap:Revenues us-gaap:ConsolidationItems,us-gaap:ProductOrService,us-gaap:StatementBusinessSegments srt:ReportableLegalEntities,us-gaap:OilAndGas,apa:AltusMidstreamSegment | █▁ | 35.0 | 32.0 |
| us-gaap:Revenues us-gaap:ConsolidationItems,us-gaap:ProductOrService,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,us-gaap:OilAndGas,apa:NorthSea | █▁ | 247.0 | 138.0 |
| us-gaap:Revenues us-gaap:ConsolidationItems,us-gaap:ProductOrService,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,us-gaap:OilAndGas,apa:SegmentEgypt | █▁ | 499.0 | 258.0 |
| us-gaap:Revenues us-gaap:ConsolidationItems,us-gaap:ProductOrService,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,us-gaap:OilAndGas,apa:SegmentUnitedStates | █▁ | 1007.0 | 355.0 |
| us-gaap:Revenues us-gaap:EquityMethodInvestmentNonconsolidatedInvestee us-gaap:EquityMethodInvestmentNonconsolidatedInvesteeOrGroupOfInvestees | █▁ | 277.0 | 175.0 |
| us-gaap:Revenues us-gaap:ProductOrService us-gaap:OilAndGas | █▁ | 1756.0 | 752.0 |
| 2021-06-30 | 2020-06-30 |
|---|
| 2021-06-30 | 2020-06-30 | ||
|---|---|---|---|
| us-gaap:Assets | █▁ | 13512.0 | 12999.0 |
| us-gaap:LiabilitiesAndStockholdersEquity | ▄ | 13512.0 | NA |
| us-gaap:StockholdersEquity | ▄ | -964.0 | NA |
| 2021-06-30 | 2020-06-30 | ||
|---|---|---|---|
| us-gaap:AssetsCurrent | ▄ | 2945.0 | NA |
| us-gaap:CashAndCashEquivalentsAtCarryingValue | ▄ | 1249.0 | NA |
| us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents | █▁ | 1249.0 | 135.0 |
| us-gaap:ReceivablesNetCurrent | ▄ | 1068.0 | NA |
| us-gaap:InventoryNet | ▄ | 479.0 | NA |
| us-gaap:OtherAssetsCurrent | ▄ | 628.0 | NA |
| us-gaap:PrepaidExpenseAndOtherAssetsCurrent | ▄ | 75.0 | NA |
| 2021-06-30 | 2020-06-30 | ||
|---|---|---|---|
| us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment | ▄ | 33744.0 | NA |
| us-gaap:PropertyPlantAndEquipmentNet | ▄ | 8501.0 | NA |
| 2021-06-30 | 2020-06-30 | ||
|---|---|---|---|
| us-gaap:AccountsPayableCurrent | ▄ | 603.0 | NA |
| us-gaap:AccruedIncomeTaxesCurrent | ▄ | 68.0 | NA |
| us-gaap:DebtCurrent | ▄ | 215.0 | NA |
| us-gaap:LiabilitiesCurrent | ▄ | 1773.0 | NA |
| us-gaap:LongTermDebtCurrent us-gaap:DebtInstrument,us-gaap:LongtermDebtType apa:SeniorNotesDueApril152022,us-gaap:SeniorNotes | ▄ | 213.0 | NA |
| us-gaap:OperatingLeaseLiabilityCurrent | ▄ | 102.0 | NA |
| us-gaap:OtherLiabilitiesCurrent | ▄ | 955.0 | NA |
| 2021-06-30 | 2020-06-30 | ||
|---|---|---|---|
| us-gaap:LongTermDebt | NA | NA | |
| us-gaap:LongTermDebtNoncurrent | NA | NA | |
| us-gaap:LongTermDebtNoncurrent us-gaap:ConsolidatedEntities us-gaap:VariableInterestEntityPrimaryBeneficiary | NA | NA | |
| us-gaap:LongTermDebtAndCapitalLeaseObligations | ▄ | 8420.0 | NA |
| us-gaap:DeferredIncomeTaxLiabilitiesNet | ▄ | 194.0 | NA |
| us-gaap:MinorityInterest us-gaap:StatementEquityComponents apa:NoncontrollingInterestALTM | ▄ | 92.0 | NA |
| us-gaap:MinorityInterest us-gaap:StatementEquityComponents apa:NoncontrollingInterestEgypt | ▄ | 948.0 | NA |
| us-gaap:OtherLiabilitiesNoncurrent | ▄ | 539.0 | NA |
| 2021-06-30 | 2020-06-30 | ||
|---|---|---|---|
| us-gaap:StockholdersEquity | ▄ | -964.0 | NA |
| us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest | █▁ | 76.0 | -636.0 |
| us-gaap:AdditionalPaidInCapital | ▄ | 11704.0 | NA |
| us-gaap:RetainedEarningsAccumulatedDeficit | ▄ | -9757.0 | NA |
| us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax | ▄ | 15.0 | NA |
| us-gaap:TreasuryStockValue | ▄ | 3188.0 | NA |
| us-gaap:MinorityInterest us-gaap:StatementEquityComponents apa:NoncontrollingInterestALTM | ▄ | 92.0 | NA |
| us-gaap:MinorityInterest us-gaap:StatementEquityComponents apa:NoncontrollingInterestEgypt | ▄ | 948.0 | NA |
| us-gaap:MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders | █▁ | 20.0 | 8.0 |
| 2021-06-30 | 2020-06-30 | ||
|---|---|---|---|
| us-gaap:NetCashProvidedByUsedInOperatingActivities | █▁ | 969.0 | 84.0 |
| us-gaap:NetCashProvidedByUsedInInvestingActivities | █▁ | -126.0 | -408.0 |
| us-gaap:NetCashProvidedByUsedInFinancingActivities | ▁█ | -132.0 | 31.0 |
| us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect | █▁ | 711.0 | -293.0 |
| 2021-06-30 | 2020-06-30 | ||
|---|---|---|---|
| us-gaap:AmortizationOfFinancingCosts | █▁ | 3.0 | 2.0 |
| us-gaap:DeferredIncomeTaxExpenseBenefit | ▁█ | -44.0 | -11.0 |
| us-gaap:DepreciationDepletionAndAmortization | ▁█ | 351.0 | 418.0 |
| us-gaap:IncreaseDecreaseInAccountsPayable | █▁ | 82.0 | -67.0 |
| us-gaap:IncreaseDecreaseInAccountsReceivable | ▁█ | -3.0 | 38.0 |
| us-gaap:IncreaseDecreaseInInventories | ▁█ | -23.0 | 5.0 |
| us-gaap:NetCashProvidedByUsedInOperatingActivities | █▁ | 969.0 | 84.0 |
| us-gaap:ProfitLoss | █▁ | 408.0 | -378.0 |
| 2021-06-30 | 2020-06-30 | ||
|---|---|---|---|
| us-gaap:NetCashProvidedByUsedInInvestingActivities | █▁ | -126.0 | -408.0 |
| 2021-06-30 | 2020-06-30 | ||
|---|---|---|---|
| us-gaap:NetCashProvidedByUsedInFinancingActivities | ▁█ | -132.0 | 31.0 |
| us-gaap:PaymentsOfDividends | NA | NA | |
| us-gaap:PaymentsOfDividendsCommonStock | ▁█ | 9.0 | 10.0 |
| 2021-06-30 | 2020-06-30 |
|---|
| Period End | 2021-06-30 | 2021-03-31 | 2020-06-30 | 2020-03-31 |
| Value | 379 | 379 | 378 | 378 |
| Percentage of WeightedAverageNumberOfDilutedSharesOutstanding | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-06-30 | 2020-03-31 |
| Value | 3400000.0 | 4000000.0 | 5200000.0 | 5500000.0 |
| Percentage of AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-06-30 | 2020-03-31 |
| Value | 0.83 | 1.02 | -1.02 | -11.86 |
| Percentage of EarningsPerShareBasic | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-06-30 | 2020-03-31 |
| Value | 0.82 | 1.02 | -1.02 | -11.86 |
| Percentage of EarningsPerShareDiluted | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-06-30 | 2020-03-31 |
| Value | 316 | 389 | -386.0 | -4481.0 |
| Percentage of ComprehensiveIncomeNetOfTax | 100.0 | 100.0 | 100.0 | 100.0 |
| Percentage of Revenues | 0.0 | 0.0 | 0.0 | 0.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-06-30 | 2020-03-31 |
| Value | 24 | 19 | 19 | 18 |
| Percentage of ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest | 100.0 | 100.0 | 100.0 | 100.0 |
| Percentage of Revenues | 0.0 | 0.0 | 0.0 | 0.0 |
| Percentage of Revenues us-gaap:RedeemablePreferredStock | 0.0 | 0.0 | 0.0 | 0.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-06-30 | 2020-03-31 |
| Value | 27 | 1.0 | 0.0 | -9.0 |
| Percentage of ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest | 112.5 | 5.3 | 0.0 | -50.0 |
| Percentage of Revenues | 0.0 | 0.0 | 0.0 | 0.0 |
| Percentage of Revenues apa:NoncontrollingInterestALTM | 0.0 | 0.0 | 0.0 | 0.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-06-30 | 2020-03-31 |
| Value | 41 | 42 | -11.0 | -151.0 |
| Percentage of ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest | 170.8 | 221.1 | -57.9 | -838.9 |
| Percentage of Revenues | 0.0 | 0.0 | 0.0 | 0.0 |
| Percentage of Revenues apa:NoncontrollingInterestEgypt | 0.0 | 0.0 | 0.0 | 0.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-06-30 | 2020-03-31 |
| Value | 408 | 451 | -378.0 | -4623.0 |
| Percentage of ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest | 100.0 | 100.0 | 100.0 | 100.0 |
| Percentage of Revenues | 0.0 | 0.0 | 0.0 | 0.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-06-30 | 2020-03-31 |
| Value | -32.0 | -31.0 | -32.0 | -40.0 |
| Percentage of CostOfGoodsAndServicesSold | 100.0 | 100.0 | 100.0 | 100.0 |
| Percentage of Revenues | 0.0 | 0.0 | 0.0 | 0.0 |
| Percentage of Revenues us-gaap:IntersegmentElimination apa:OilAndGasExcludingPurchased | 0.0 | 0.0 | 0.0 | 0.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-06-30 | 2020-03-31 |
| Value | 8.0 | 7.0 | 10.0 | 11 |
| Percentage of CostOfGoodsAndServicesSold | -25.0 | -22.6 | -31.2 | -27.5 |
| Percentage of Revenues | 0.0 | 0.0 | 0.0 | 0.0 |
| Percentage of Revenues srt:ReportableLegalEntities apa:OilAndGasExcludingPurchased apa:AltusMidstreamSegment | 0.0 | 0.0 | 0.0 | 0.0 |
| Period End | 2021-06-30 | 2021-03-31 |
| Value | 3.0 | 2.0 |
| Percentage of CostOfGoodsAndServicesSold | -9.4 | -6.5 |
| Percentage of Revenues | 0.0 | 0.0 |
| Percentage of Revenues srt:ReportableLegalEntities us-gaap:OilAndGasPurchased apa:AltusMidstreamSegment | 0.0 | 0.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-06-30 | 2020-03-31 |
| Value | 8.0 | 12 | 11 | 16 |
| Percentage of CostOfGoodsAndServicesSold | -25.0 | -38.7 | -34.4 | -40.0 |
| Percentage of Revenues | 0.0 | 0.0 | 0.0 | 0.0 |
| Percentage of Revenues us-gaap:OperatingSegments apa:OilAndGasExcludingPurchased apa:NorthSea | 0.0 | 0.0 | 0.0 | 0.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-06-30 | 2020-03-31 |
| Value | 3.0 | 1.0 | 13 | 10.0 |
| Percentage of CostOfGoodsAndServicesSold | -9.4 | -3.2 | -40.6 | -25.0 |
| Percentage of Revenues | 0.0 | 0.0 | 0.0 | 0.0 |
| Percentage of Revenues us-gaap:OperatingSegments apa:OilAndGasExcludingPurchased apa:SegmentEgypt | 0.0 | 0.0 | 0.0 | 0.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-06-30 | 2020-03-31 |
| Value | 74 | 69 | 70 | 74 |
| Percentage of CostOfGoodsAndServicesSold | -231.2 | -222.6 | -218.8 | -185.0 |
| Percentage of Revenues | 0.0 | 0.0 | 0.0 | 0.0 |
| Percentage of Revenues us-gaap:OperatingSegments apa:OilAndGasExcludingPurchased apa:SegmentUnitedStates | 0.0 | 0.0 | 0.0 | 0.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-06-30 | 2020-03-31 |
| Value | 259 | 492 | 46 | 86 |
| Percentage of CostOfGoodsAndServicesSold | -809.4 | -1587.1 | -143.8 | -215.0 |
| Percentage of Revenues | 0.0 | 0.0 | 0.0 | 0.0 |
| Percentage of Revenues us-gaap:OperatingSegments us-gaap:OilAndGasPurchased apa:SegmentUnitedStates | 0.0 | 0.0 | 0.0 | 0.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-06-30 | 2020-03-31 |
| Value | 61 | 58 | 72 | 71 |
| Percentage of CostOfGoodsAndServicesSold | -190.6 | -187.1 | -225.0 | -177.5 |
| Percentage of Revenues | 0.0 | 0.0 | 0.0 | 0.0 |
| Percentage of Revenues apa:OilAndGasExcludingPurchased | 0.0 | 0.0 | 0.0 | 0.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-06-30 | 2020-03-31 |
| Value | 262 | 494 | 46 | 86 |
| Percentage of CostOfGoodsAndServicesSold | -818.8 | -1593.5 | -143.8 | -215.0 |
| Percentage of Revenues | 0.0 | 0.0 | 0.0 | 0.0 |
| Percentage of Revenues us-gaap:OilAndGasPurchased | 0.0 | 0.0 | 0.0 | 0.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-06-30 | 2020-03-31 |
| Value | 1287 | 1472 | 1012 | 5845 |
| Percentage of CostsAndExpenses | 100.0 | 100.0 | 100.0 | 100.0 |
| Percentage of Revenues | 0.0 | 0.0 | 0.0 | 0.0 |
| Period End | 2021-06-30 | 2020-06-30 |
| Value | 1.0 | 140 |
| Percentage of GainsLossesOnExtinguishmentOfDebt | 100.0 | 100.0 |
| Percentage of Revenues | 0.0 | 0.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-06-30 | 2020-03-31 |
| Value | 86 | 83 | 94 | 68 |
| Percentage of GeneralAndAdministrativeExpense | 100.0 | 100.0 | 100.0 | 100.0 |
| Percentage of Revenues | 0.0 | 0.0 | 0.0 | 0.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-06-30 | 2020-03-31 |
| Value | 495 | 620 | -416.0 | -4566.0 |
| Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments | 100.0 | 100.0 | 100.0 | 100.0 |
| Percentage of Revenues | 0.0 | 0.0 | 0.0 | 0.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-06-30 | 2020-03-31 |
| Value | 107 | 124 | -18.0 | 98 |
| Percentage of IncomeTaxesPaidNet | 100.0 | 100.0 | 100.0 | 100.0 |
| Percentage of Revenues | 0.0 | 0.0 | 0.0 | 0.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-06-30 | 2020-03-31 |
| Value | 110 | 112 | 107 | 107 |
| Percentage of InterestExpenseDebt | 100.0 | 100.0 | 100.0 | 100.0 |
| Percentage of Revenues | 0.0 | 0.0 | 0.0 | 0.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-06-30 | 2020-03-31 |
| Value | 120 | 113 | 86 | 126 |
| Percentage of InterestPaidNet | 100.0 | 100.0 | 100.0 | 100.0 |
| Percentage of Revenues | 0.0 | 0.0 | 0.0 | 0.0 |
| Period End | 2021-03-31 |
| Value | 42 |
| Percentage of NetIncomeLossAttributableToNoncontrollingInterest | 100.0 |
| Percentage of Revenues | 0.0 |
| Period End | 2021-06-30 | 2021-03-31 |
| Value | 20 | 19 |
| Percentage of NetIncomeLossAttributableToNoncontrollingInterest | 0.0 | 45.2 |
| Percentage of Revenues | 0.0 | 0.0 |
| Percentage of Revenues apa:AltusMidstreamLP us-gaap:RedeemablePreferredStock | 0.0 | 0.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-06-30 | 2020-03-31 |
| Value | 24 | 19 | 19 | 18 |
| Percentage of NetIncomeLossAttributableToNoncontrollingInterest | 0.0 | 45.2 | 0.0 | 0.0 |
| Percentage of Revenues | 0.0 | 0.0 | 0.0 | 0.0 |
| Percentage of Revenues us-gaap:RedeemablePreferredStock | 0.0 | 0.0 | 0.0 | 0.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-06-30 | 2020-03-31 |
| Value | 27 | 1.0 | 0.0 | -9.0 |
| Percentage of NetIncomeLossAttributableToNoncontrollingInterest | 0.0 | 2.4 | 0.0 | 0.0 |
| Percentage of Revenues | 0.0 | 0.0 | 0.0 | 0.0 |
| Percentage of Revenues apa:NoncontrollingInterestALTM | 0.0 | 0.0 | 0.0 | 0.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-06-30 | 2020-03-31 |
| Value | 41 | 42 | -11.0 | -151.0 |
| Percentage of NetIncomeLossAttributableToNoncontrollingInterest | 0.0 | 100.0 | 0.0 | 0.0 |
| Percentage of Revenues | 0.0 | 0.0 | 0.0 | 0.0 |
| Percentage of Revenues apa:NoncontrollingInterestEgypt | 0.0 | 0.0 | 0.0 | 0.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-06-30 | 2020-03-31 |
| Value | 316 | 388 | -386.0 | -4480.0 |
| Percentage of NetIncomeLossAvailableToCommonStockholdersBasic | 100.0 | 100.0 | 100.0 | 100.0 |
| Percentage of Revenues | 0.0 | 0.0 | 0.0 | 0.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-06-30 | 2020-03-31 |
| Value | 316 | 388 | -386.0 | -4480.0 |
| Percentage of NetIncomeLossAvailableToCommonStockholdersBasic | 100.0 | 100.0 | 100.0 | 100.0 |
| Percentage of Revenues | 0.0 | 0.0 | 0.0 | 0.0 |
| Percentage of Revenues us-gaap:Parent | 0.0 | 0.0 | 0.0 | 0.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-06-30 | 2020-03-31 |
| Value | 316 | 388 | -386.0 | -4480.0 |
| Percentage of NetIncomeLossAvailableToCommonStockholdersBasic | 100.0 | 100.0 | 100.0 | 100.0 |
| Percentage of Revenues | 0.0 | 0.0 | 0.0 | 0.0 |
| Percentage of Revenues us-gaap:RetainedEarnings | 0.0 | 0.0 | 0.0 | 0.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-06-30 | 2020-03-31 |
| Value | 310 | 388 | -386.0 | -4480.0 |
| Percentage of NetIncomeLossAvailableToCommonStockholdersDiluted | 100.0 | 100.0 | 100.0 | 100.0 |
| Percentage of Revenues | 0.0 | 0.0 | 0.0 | 0.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-06-30 | 2020-03-31 |
| Value | 1090 | 1279 | 942 | 5647 |
| Percentage of OperatingExpenses | 100.0 | 100.0 | 100.0 | 100.0 |
| Percentage of Revenues | 0.0 | 0.0 | 0.0 | 0.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-06-30 | 2020-03-31 |
| Value | -25.0 | -27.0 | -27.0 | -39.0 |
| Percentage of OperatingExpenses | -2.3 | -2.1 | -2.9 | -0.7 |
| Percentage of Revenues | 0.0 | 0.0 | 0.0 | 0.0 |
| Percentage of Revenues us-gaap:IntersegmentElimination | 0.0 | 0.0 | 0.0 | 0.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-06-30 | 2020-03-31 |
| Value | 19 | 17 | 17 | 18 |
| Percentage of OperatingExpenses | 1.7 | 1.3 | 1.8 | 0.3 |
| Percentage of Revenues | 0.0 | 0.0 | 0.0 | 0.0 |
| Percentage of Revenues srt:ReportableLegalEntities apa:AltusMidstreamSegment | 0.0 | 0.0 | 0.0 | 0.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-06-30 | 2020-03-31 |
| Value | 192 | 210 | 198 | 233 |
| Percentage of OperatingExpenses | 17.6 | 16.4 | 21.0 | 4.1 |
| Percentage of Revenues | 0.0 | 0.0 | 0.0 | 0.0 |
| Percentage of Revenues us-gaap:OperatingSegments apa:NorthSea | 0.0 | 0.0 | 0.0 | 0.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-06-30 | 2020-03-31 |
| Value | 268 | 243 | 311 | 810 |
| Percentage of OperatingExpenses | 24.6 | 19.0 | 33.0 | 14.3 |
| Percentage of Revenues | 0.0 | 0.0 | 0.0 | 0.0 |
| Percentage of Revenues us-gaap:OperatingSegments apa:SegmentEgypt | 0.0 | 0.0 | 0.0 | 0.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-06-30 | 2020-03-31 |
| Value | 636 | 836 | 443 | 4625 |
| Percentage of OperatingExpenses | 58.3 | 65.4 | 47.0 | 81.9 |
| Percentage of Revenues | 0.0 | 0.0 | 0.0 | 0.0 |
| Percentage of Revenues us-gaap:OperatingSegments apa:SegmentUnitedStates | 0.0 | 0.0 | 0.0 | 0.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-06-30 | 2020-03-31 |
| Value | 666 | 592 | -190.0 | -4303.0 |
| Percentage of OperatingIncomeLoss | 100.0 | 100.0 | 100.0 | 100.0 |
| Percentage of Revenues | 0.0 | 0.0 | 0.0 | 0.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-06-30 | 2020-03-31 |
| Value | -7.0 | -5.0 | -4.0 | -2.0 |
| Percentage of OperatingIncomeLoss | -1.1 | -0.8 | 2.1 | 0.0 |
| Percentage of Revenues | 0.0 | 0.0 | 0.0 | 0.0 |
| Percentage of Revenues us-gaap:IntersegmentElimination | 0.0 | 0.0 | 0.0 | 0.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-06-30 | 2020-03-31 |
| Value | 16 | 18 | 15 | 23 |
| Percentage of OperatingIncomeLoss | 2.4 | 3.0 | -7.9 | -0.5 |
| Percentage of Revenues | 0.0 | 0.0 | 0.0 | 0.0 |
| Percentage of Revenues srt:ReportableLegalEntities apa:AltusMidstreamSegment | 0.0 | 0.0 | 0.0 | 0.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-06-30 | 2020-03-31 |
| Value | 55 | 68 | -60.0 | 64 |
| Percentage of OperatingIncomeLoss | 8.3 | 11.5 | 31.6 | -1.5 |
| Percentage of Revenues | 0.0 | 0.0 | 0.0 | 0.0 |
| Percentage of Revenues us-gaap:OperatingSegments apa:NorthSea | 0.0 | 0.0 | 0.0 | 0.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-06-30 | 2020-03-31 |
| Value | 231 | 231 | -53.0 | -409.0 |
| Percentage of OperatingIncomeLoss | 34.7 | 39.0 | 27.9 | 9.5 |
| Percentage of Revenues | 0.0 | 0.0 | 0.0 | 0.0 |
| Percentage of Revenues us-gaap:OperatingSegments apa:SegmentEgypt | 0.0 | 0.0 | 0.0 | 0.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-06-30 | 2020-03-31 |
| Value | 371 | 280 | -88.0 | -3979.0 |
| Percentage of OperatingIncomeLoss | 55.7 | 47.3 | 46.3 | 92.5 |
| Percentage of Revenues | 0.0 | 0.0 | 0.0 | 0.0 |
| Percentage of Revenues us-gaap:OperatingSegments apa:SegmentUnitedStates | 0.0 | 0.0 | 0.0 | 0.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-06-30 | 2020-03-31 |
| Value | 135 | 112 | 96 | 86 |
| Percentage of OperatingIncomeLoss | 20.3 | 18.9 | -50.5 | -2.0 |
| Percentage of Revenues | 0.0 | 0.0 | 0.0 | 0.0 |
| Percentage of Revenues us-gaap:EquityMethodInvestmentNonconsolidatedInvesteeOrGroupOfInvestees | 0.0 | 44.1 | 0.0 | 48.9 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-06-30 | 2020-03-31 |
| Value | 0 | 4000000.0 | 3000000.0 | -8000000.0 |
| Percentage of OtherComprehensiveIncomeLossNetOfTax | 0.0 | 100.0 | 100.0 | 100.0 |
| Percentage of Revenues | 0.0 | 0.0 | 0.0 | 0.0 |
| Percentage of Revenues us-gaap:EquityMethodInvestmentNonconsolidatedInvesteeOrGroupOfInvestees | 0.0 | 1.6 | 0.0 | -4.5 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-06-30 | 2020-03-31 |
| Value | 74 | 61 | 19 | 13 |
| Percentage of OtherNonoperatingIncomeExpense | 100.0 | 100.0 | 100.0 | 100.0 |
| Percentage of Revenues | 0.0 | 0.0 | 0.0 | 0.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-06-30 | 2020-03-31 |
| Value | 408 | 450 | -378.0 | -4622.0 |
| Percentage of ProfitLoss | 100.0 | 100.0 | 100.0 | 100.0 |
| Percentage of Revenues | 0.0 | 0.0 | 0.0 | 0.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-06-30 | 2020-03-31 |
| Value | 115 | 89 | 70 | 77 |
| Percentage of ProfitLoss | 28.2 | 19.8 | -18.5 | -1.7 |
| Percentage of Revenues | 0.0 | 0.0 | 0.0 | 0.0 |
| Percentage of Revenues us-gaap:EquityMethodInvestmentNonconsolidatedInvesteeOrGroupOfInvestees | 0.0 | 35.0 | 0.0 | 43.8 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-06-30 | 2020-03-31 |
| Value | -32.0 | -32.0 | -31.0 | -41.0 |
| Percentage of RevenueFromContractWithCustomerIncludingAssessedTax | 100.0 | 100.0 | 100.0 | 100.0 |
| Percentage of Revenues | 0.0 | 0.0 | 0.0 | 0.0 |
| Percentage of Revenues us-gaap:IntersegmentElimination | 0.0 | 0.0 | 0.0 | 0.0 |
| Period End | 2021-03-31 | 2020-03-31 |
| Value | -32.0 | -41.0 |
| Percentage of RevenueFromContractWithCustomerIncludingAssessedTax | 100.0 | 100.0 |
| Percentage of Revenues | 0.0 | 0.0 |
| Percentage of Revenues us-gaap:IntersegmentElimination us-gaap:OilAndGas | 0.0 | 0.0 |
| Period End | 2021-03-31 | 2020-03-31 |
| Value | 6.0 | 7.0 |
| Percentage of RevenueFromContractWithCustomerIncludingAssessedTax | -18.8 | -17.1 |
| Percentage of Revenues | 0.0 | 0.0 |
| Percentage of Revenues us-gaap:OperatingSegments apa:OilAndGasExcludingPurchased srt:NaturalGasLiquidsReserves apa:NorthSea | 0.0 | 0.0 |
| Period End | 2021-03-31 | 2020-03-31 |
| Value | 2.0 | 3.0 |
| Percentage of RevenueFromContractWithCustomerIncludingAssessedTax | -6.2 | -7.3 |
| Percentage of Revenues | 0.0 | 0.0 |
| Percentage of Revenues us-gaap:OperatingSegments apa:OilAndGasExcludingPurchased srt:NaturalGasLiquidsReserves apa:SegmentEgypt | 0.0 | 0.0 |
| Period End | 2021-03-31 | 2020-03-31 |
| Value | 120 | 71 |
| Percentage of RevenueFromContractWithCustomerIncludingAssessedTax | -375.0 | -173.2 |
| Percentage of Revenues | 0.0 | 0.0 |
| Percentage of Revenues us-gaap:OperatingSegments apa:OilAndGasExcludingPurchased srt:NaturalGasLiquidsReserves apa:SegmentUnitedStates | 0.0 | 0.0 |
| Period End | 2021-03-31 | 2020-03-31 |
| Value | 31 | 19 |
| Percentage of RevenueFromContractWithCustomerIncludingAssessedTax | -96.9 | -46.3 |
| Percentage of Revenues | 0.0 | 0.0 |
| Percentage of Revenues us-gaap:OperatingSegments apa:OilAndGasExcludingPurchased srt:NaturalGasReserves apa:NorthSea | 0.0 | 0.0 |
| Period End | 2021-03-31 | 2020-03-31 |
| Value | 70 | 65 |
| Percentage of RevenueFromContractWithCustomerIncludingAssessedTax | -218.8 | -158.5 |
| Percentage of Revenues | 0.0 | 0.0 |
| Percentage of Revenues us-gaap:OperatingSegments apa:OilAndGasExcludingPurchased srt:NaturalGasReserves apa:SegmentEgypt | 0.0 | 0.0 |
| Period End | 2021-03-31 | 2020-03-31 |
| Value | 211 | 39 |
| Percentage of RevenueFromContractWithCustomerIncludingAssessedTax | -659.4 | -95.1 |
| Percentage of Revenues | 0.0 | 0.0 |
| Percentage of Revenues us-gaap:OperatingSegments apa:OilAndGasExcludingPurchased srt:NaturalGasReserves apa:SegmentUnitedStates | 0.0 | 0.0 |
| Period End | 2021-03-31 | 2020-03-31 |
| Value | 241 | 271 |
| Percentage of RevenueFromContractWithCustomerIncludingAssessedTax | -753.1 | -661.0 |
| Percentage of Revenues | 0.0 | 0.0 |
| Percentage of Revenues us-gaap:OperatingSegments apa:OilAndGasExcludingPurchased srt:OilReserves apa:NorthSea | 0.0 | 0.0 |
| Period End | 2021-03-31 | 2020-03-31 |
| Value | 402 | 333 |
| Percentage of RevenueFromContractWithCustomerIncludingAssessedTax | -1256.2 | -812.2 |
| Percentage of Revenues | 0.0 | 0.0 |
| Percentage of Revenues us-gaap:OperatingSegments apa:OilAndGasExcludingPurchased srt:OilReserves apa:SegmentEgypt | 0.0 | 0.0 |
| Period End | 2021-03-31 | 2020-03-31 |
| Value | 348 | 428 |
| Percentage of RevenueFromContractWithCustomerIncludingAssessedTax | -1087.5 | -1043.9 |
| Percentage of Revenues | 0.0 | 0.0 |
| Percentage of Revenues us-gaap:OperatingSegments apa:OilAndGasExcludingPurchased srt:OilReserves apa:SegmentUnitedStates | 0.0 | 0.0 |
| Period End | 2021-03-31 | 2020-03-31 |
| Value | 35 | 41 |
| Percentage of RevenueFromContractWithCustomerIncludingAssessedTax | -109.4 | -100.0 |
| Percentage of Revenues | 0.0 | 0.0 |
| Percentage of Revenues srt:ReportableLegalEntities us-gaap:OilAndGas apa:AltusMidstreamSegment | 0.0 | 0.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-06-30 |
| Value | 3.0 | 3.0 | 1.0 |
| Percentage of RevenueFromContractWithCustomerIncludingAssessedTax | -9.4 | -9.4 | -3.2 |
| Percentage of Revenues | 0.0 | 0.0 | 0.0 |
| Percentage of Revenues srt:ReportableLegalEntities us-gaap:OilAndGasPurchased apa:AltusMidstreamSegment | 0.0 | 0.0 | 0.0 |
| Period End | 2021-03-31 | 2020-03-31 |
| Value | 278 | 297 |
| Percentage of RevenueFromContractWithCustomerIncludingAssessedTax | -868.8 | -724.4 |
| Percentage of Revenues | 0.0 | 0.0 |
| Percentage of Revenues us-gaap:OperatingSegments apa:OilAndGasExcludingPurchased apa:NorthSea | 0.0 | 0.0 |
| Period End | 2021-03-31 | 2020-03-31 |
| Value | 474 | 401 |
| Percentage of RevenueFromContractWithCustomerIncludingAssessedTax | -1481.2 | -978.0 |
| Percentage of Revenues | 0.0 | 0.0 |
| Percentage of Revenues us-gaap:OperatingSegments apa:OilAndGasExcludingPurchased apa:SegmentEgypt | 0.0 | 0.0 |
| Period End | 2021-03-31 | 2020-03-31 |
| Value | 679 | 538 |
| Percentage of RevenueFromContractWithCustomerIncludingAssessedTax | -2121.9 | -1312.2 |
| Percentage of Revenues | 0.0 | 0.0 |
| Percentage of Revenues us-gaap:OperatingSegments apa:OilAndGasExcludingPurchased apa:SegmentUnitedStates | 0.0 | 0.0 |
| Period End | 2021-03-31 | 2020-03-31 |
| Value | 278 | 297 |
| Percentage of RevenueFromContractWithCustomerIncludingAssessedTax | -868.8 | -724.4 |
| Percentage of Revenues | 0.0 | 0.0 |
| Percentage of Revenues us-gaap:OperatingSegments us-gaap:OilAndGas apa:NorthSea | 0.0 | 0.0 |
| Period End | 2021-03-31 | 2020-03-31 |
| Value | 474 | 401 |
| Percentage of RevenueFromContractWithCustomerIncludingAssessedTax | -1481.2 | -978.0 |
| Percentage of Revenues | 0.0 | 0.0 |
| Percentage of Revenues us-gaap:OperatingSegments us-gaap:OilAndGas apa:SegmentEgypt | 0.0 | 0.0 |
| Period End | 2021-03-31 | 2020-03-31 |
| Value | 1116 | 646 |
| Percentage of RevenueFromContractWithCustomerIncludingAssessedTax | -3487.5 | -1575.6 |
| Percentage of Revenues | 0.0 | 0.0 |
| Percentage of Revenues us-gaap:OperatingSegments us-gaap:OilAndGas apa:SegmentUnitedStates | 0.0 | 0.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-06-30 | 2020-03-31 |
| Value | 239 | 437 | 54 | 108 |
| Percentage of RevenueFromContractWithCustomerIncludingAssessedTax | -746.9 | -1365.6 | -174.2 | -263.4 |
| Percentage of Revenues | 0.0 | 0.0 | 0.0 | 0.0 |
| Percentage of Revenues us-gaap:OperatingSegments us-gaap:OilAndGasPurchased apa:SegmentUnitedStates | 0.0 | 0.0 | 0.0 | 0.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-06-30 | 2020-03-31 |
| Value | 32 | 32 | 31 | 41 |
| Percentage of RevenueFromContractWithCustomerIncludingAssessedTax | -100.0 | -100.0 | -100.0 | -100.0 |
| Percentage of Revenues | 0.0 | 0.0 | 0.0 | 0.0 |
| Percentage of Revenues srt:ReportableLegalEntities apa:AltusMidstreamSegment | 0.0 | 0.0 | 0.0 | 0.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-06-30 | 2020-03-31 |
| Value | 1407 | 1431 | 715 | 1236 |
| Percentage of RevenueFromContractWithCustomerIncludingAssessedTax | -4396.9 | -4471.9 | -2306.5 | -3014.6 |
| Percentage of Revenues | 0.0 | 0.0 | 0.0 | 0.0 |
| Percentage of Revenues apa:OilAndGasExcludingPurchased | 0.0 | 0.0 | 0.0 | 0.0 |
| Period End | 2021-03-31 | 2020-03-31 |
| Value | 1871 | 1344 |
| Percentage of RevenueFromContractWithCustomerIncludingAssessedTax | -5846.9 | -3278.0 |
| Percentage of Revenues | 0.0 | 0.0 |
| Percentage of Revenues us-gaap:OilAndGas | 0.0 | 0.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-06-30 | 2020-03-31 |
| Value | 242 | 440 | 55 | 108 |
| Percentage of RevenueFromContractWithCustomerIncludingAssessedTax | -756.2 | -1375.0 | -177.4 | -263.4 |
| Percentage of Revenues | 0.0 | 0.0 | 0.0 | 0.0 |
| Percentage of Revenues us-gaap:OilAndGasPurchased | 0.0 | 0.0 | 0.0 | 0.0 |
| Period End | 2021-03-31 | 2020-03-31 |
| Value | 128 | 81 |
| Percentage of RevenueFromContractWithCustomerIncludingAssessedTax | -400.0 | -197.6 |
| Percentage of Revenues | 0.0 | 0.0 |
| Percentage of Revenues apa:OilAndGasExcludingPurchased srt:NaturalGasLiquidsReserves | 0.0 | 0.0 |
| Period End | 2021-03-31 | 2020-03-31 |
| Value | 312 | 123 |
| Percentage of RevenueFromContractWithCustomerIncludingAssessedTax | -975.0 | -300.0 |
| Percentage of Revenues | 0.0 | 0.0 |
| Percentage of Revenues apa:OilAndGasExcludingPurchased srt:NaturalGasReserves | 0.0 | 0.0 |
| Period End | 2021-03-31 | 2020-03-31 |
| Value | 991 | 1032 |
| Percentage of RevenueFromContractWithCustomerIncludingAssessedTax | -3096.9 | -2517.1 |
| Percentage of Revenues | 0.0 | 0.0 |
| Percentage of Revenues apa:OilAndGasExcludingPurchased srt:OilReserves | 0.0 | 0.0 |
| Period End | 2021-06-30 | 2020-06-30 |
| Value | -32.0 | -31.0 |
| Percentage of Revenues | 100.0 | 100.0 |
| Percentage of Revenues | 0.0 | 0.0 |
| Percentage of Revenues us-gaap:IntersegmentElimination us-gaap:OilAndGas | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2020-06-30 |
| Value | 35 | 32 |
| Percentage of Revenues | -109.4 | -103.2 |
| Percentage of Revenues | 0.0 | 0.0 |
| Percentage of Revenues srt:ReportableLegalEntities us-gaap:OilAndGas apa:AltusMidstreamSegment | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2020-06-30 |
| Value | 247 | 138 |
| Percentage of Revenues | -771.9 | -445.2 |
| Percentage of Revenues | 0.0 | 0.0 |
| Percentage of Revenues us-gaap:OperatingSegments us-gaap:OilAndGas apa:NorthSea | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2020-06-30 |
| Value | 499 | 258 |
| Percentage of Revenues | -1559.4 | -832.3 |
| Percentage of Revenues | 0.0 | 0.0 |
| Percentage of Revenues us-gaap:OperatingSegments us-gaap:OilAndGas apa:SegmentEgypt | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2020-06-30 |
| Value | 1007 | 355 |
| Percentage of Revenues | -3146.9 | -1145.2 |
| Percentage of Revenues | 0.0 | 0.0 |
| Percentage of Revenues us-gaap:OperatingSegments us-gaap:OilAndGas apa:SegmentUnitedStates | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-06-30 | 2020-03-31 |
| Value | 277 | 254 | 175 | 176 |
| Percentage of Revenues | -865.6 | 0.0 | -564.5 | 0.0 |
| Percentage of Revenues | 0.0 | 0.0 | 0.0 | 0.0 |
| Percentage of Revenues us-gaap:EquityMethodInvestmentNonconsolidatedInvesteeOrGroupOfInvestees | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2020-06-30 |
| Value | 1756 | 752 |
| Percentage of Revenues | -5487.5 | -2425.8 |
| Percentage of Revenues | 0.0 | 0.0 |
| Percentage of Revenues us-gaap:OilAndGas | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-06-30 | 2020-03-31 |
| Value | 13512 | 13127 | 12746 | 12999 | 13391 |
| Percentage of Assets | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Percentage of Assets | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-06-30 | 2020-03-31 |
| Value | 466 | 479 | 114 | 75 |
| Percentage of Assets | 3.4 | 3.6 | 0.9 | 0.6 |
| Percentage of Assets | 3.4 | 3.6 | 0.9 | 0.6 |
| Percentage of Assets us-gaap:IntersegmentElimination | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-06-30 | 2020-03-31 |
| Value | 1839 | 1828 | 1627 | 1574 |
| Percentage of Assets | 13.6 | 13.9 | 12.5 | 11.8 |
| Percentage of Assets | 13.6 | 13.9 | 12.5 | 11.8 |
| Percentage of Assets srt:ReportableLegalEntities apa:AltusMidstreamSegment | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-06-30 | 2020-03-31 |
| Value | 2127 | 2167 | 2339 | 2366 |
| Percentage of Assets | 15.7 | 16.5 | 18.0 | 17.7 |
| Percentage of Assets | 15.7 | 16.5 | 18.0 | 17.7 |
| Percentage of Assets us-gaap:OperatingSegments apa:NorthSea | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-06-30 | 2020-03-31 |
| Value | 3116 | 3020 | 3098 | 3151 |
| Percentage of Assets | 23.1 | 23.0 | 23.8 | 23.5 |
| Percentage of Assets | 23.1 | 23.0 | 23.8 | 23.5 |
| Percentage of Assets us-gaap:OperatingSegments apa:SegmentEgypt | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-06-30 | 2020-03-31 |
| Value | 5964 | 5633 | 5821 | 6225 |
| Percentage of Assets | 44.1 | 42.9 | 44.8 | 46.5 |
| Percentage of Assets | 44.1 | 42.9 | 44.8 | 46.5 |
| Percentage of Assets us-gaap:OperatingSegments apa:SegmentUnitedStates | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 |
| Value | 13512 | 13127 | 12746 |
| Percentage of LiabilitiesAndStockholdersEquity | 100.0 | 100.0 | 100.0 |
| Percentage of Assets | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 |
| Value | -964000000.0 | -1258000000.0 | -1639000000.0 |
| Percentage of StockholdersEquity | 100.0 | 100.0 | 100.0 |
| Percentage of Assets | -7.1 | -9.6 | -12.9 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 |
| Value | 2945 | 2345 | 1846 |
| Percentage of AssetsCurrent | 100.0 | 100.0 | 100.0 |
| Percentage of Assets | 21.8 | 17.9 | 14.5 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 |
| Value | 1249 | 538 | 262 |
| Percentage of CashAndCashEquivalentsAtCarryingValue | 100.0 | 100.0 | 100.0 |
| Percentage of Assets | 9.2 | 4.1 | 2.1 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 |
| Value | 75 | 51 | 24 |
| Percentage of CashAndCashEquivalentsAtCarryingValue | 6.0 | 9.5 | 9.2 |
| Percentage of Assets | 0.6 | 0.4 | 0.2 |
| Percentage of Assets us-gaap:VariableInterestEntityPrimaryBeneficiary | 0.0 | 0.0 | 0.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-06-30 | 2020-03-31 | 2019-12-31 |
| Value | 1249 | 538 | 262 | 135 | 428 | 247 |
| Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Percentage of Assets | 9.2 | 4.1 | 2.1 | 1.0 | 3.2 | 0.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 |
| Value | 1068 | 1071 | 908 |
| Percentage of ReceivablesNetCurrent | 100.0 | 100.0 | 100.0 |
| Percentage of Assets | 7.9 | 8.2 | 7.1 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 |
| Value | 99 | 98 | 95 |
| Percentage of ReceivablesNetCurrent | 9.3 | 9.2 | 10.5 |
| Percentage of Assets | 0.7 | 0.7 | 0.7 |
| Percentage of Assets us-gaap:VariableInterestEntityPrimaryBeneficiary | 0.0 | 0.0 | 0.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 |
| Value | 479 | 502 | 492 |
| Percentage of InventoryNet | 100.0 | 100.0 | 100.0 |
| Percentage of Assets | 3.5 | 3.8 | 3.9 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 |
| Value | 628 | 736 | 676 |
| Percentage of OtherAssetsCurrent | 100.0 | 100.0 | 100.0 |
| Percentage of Assets | 4.6 | 5.6 | 5.3 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 |
| Value | 9.0 | 12 | 5.0 |
| Percentage of OtherAssetsCurrent | 1.4 | 1.6 | 0.7 |
| Percentage of Assets | 0.1 | 0.1 | 0.0 |
| Percentage of Assets us-gaap:VariableInterestEntityPrimaryBeneficiary | 0.0 | 0.0 | 0.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 |
| Value | 75 | 123 | 71 |
| Percentage of PrepaidExpenseAndOtherAssetsCurrent | 100.0 | 100.0 | 100.0 |
| Percentage of Assets | 0.6 | 0.9 | 0.6 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 |
| Value | 33744 | 35146 | 34810 |
| Percentage of AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment | 100.0 | 100.0 | 100.0 |
| Percentage of Assets | 249.7 | 267.7 | 273.1 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 |
| Value | 19 | 16 | 13 |
| Percentage of AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment | 0.1 | 0.0 | 0.0 |
| Percentage of Assets | 0.1 | 0.1 | 0.1 |
| Percentage of Assets us-gaap:VariableInterestEntityPrimaryBeneficiary | 0.0 | 0.0 | 0.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 |
| Value | 358 | 342 | 323 |
| Percentage of AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment | 1.1 | 1.0 | 0.9 |
| Percentage of Assets | 2.6 | 2.6 | 2.5 |
| Percentage of Assets apa:GPTFacilities | 0.0 | 0.0 | 0.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 |
| Value | 8501 | 8718 | 8819 |
| Percentage of PropertyPlantAndEquipmentNet | 100.0 | 100.0 | 100.0 |
| Percentage of Assets | 62.9 | 66.4 | 69.2 |
| Period End | 2021-06-30 |
| Value | 157 |
| Percentage of PropertyPlantAndEquipmentNet | 1.8 |
| Percentage of Assets | 1.2 |
| Percentage of Assets apa:PermianRegion us-gaap:DisposalGroupDisposedOfBySaleNotDiscontinuedOperations | 0.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 |
| Value | 603 | 524 | 444 |
| Percentage of AccountsPayableCurrent | 100.0 | 100.0 | 100.0 |
| Percentage of Assets | 4.5 | 4.0 | 3.5 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 |
| Value | 68 | 41 | 25 |
| Percentage of AccruedIncomeTaxesCurrent | 100.0 | 100.0 | 100.0 |
| Percentage of Assets | 0.5 | 0.3 | 0.2 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 |
| Value | 215 | 2.0 | 2.0 |
| Percentage of DebtCurrent | 100.0 | 100.0 | 100.0 |
| Percentage of Assets | 1.6 | 0.0 | 0.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 |
| Value | 1773 | 1338 | 1308 |
| Percentage of LiabilitiesCurrent | 100.0 | 100.0 | 100.0 |
| Percentage of Assets | 13.1 | 10.2 | 10.3 |
| Period End | 2021-06-30 |
| Value | 213 |
| Percentage of LongTermDebtCurrent | 100.0 |
| Percentage of Assets | 1.6 |
| Percentage of Assets apa:SeniorNotesDueApril152022 us-gaap:SeniorNotes | 0.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 |
| Value | 102 | 106 | 116 |
| Percentage of OperatingLeaseLiabilityCurrent | 100.0 | 100.0 | 100.0 |
| Percentage of Assets | 0.8 | 0.8 | 0.9 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 |
| Value | 955 | 812 | 862 |
| Percentage of OtherLiabilitiesCurrent | 100.0 | 100.0 | 100.0 |
| Percentage of Assets | 7.1 | 6.2 | 6.8 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 |
| Value | 11 | 8.0 | 4.0 |
| Percentage of OtherLiabilitiesCurrent | 1.2 | 1.0 | 0.5 |
| Percentage of Assets | 0.1 | 0.1 | 0.0 |
| Percentage of Assets us-gaap:VariableInterestEntityPrimaryBeneficiary | 0.0 | 0.0 | 0.0 |
| Period End | 2021-03-31 | 2020-12-31 |
| Value | 8715 | 8772 |
| Percentage of LongTermDebt | 100.0 | 100.0 |
| Percentage of Assets | 66.4 | 68.8 |
| Period End | 2021-03-31 | 2020-12-31 |
| Value | 8713 | 8770 |
| Percentage of LongTermDebtNoncurrent | 100.0 | 100.0 |
| Percentage of Assets | 66.4 | 68.8 |
| Period End | 2021-03-31 | 2020-12-31 |
| Value | 657 | 624 |
| Percentage of LongTermDebtNoncurrent | 7.5 | 7.1 |
| Percentage of Assets | 5.0 | 4.9 |
| Percentage of Assets us-gaap:VariableInterestEntityPrimaryBeneficiary | 0.0 | 0.0 |
| Period End | 2021-06-30 | 2020-12-31 |
| Value | 8420 | 8770 |
| Percentage of LongTermDebtAndCapitalLeaseObligations | 100.0 | 100.0 |
| Percentage of Assets | 62.3 | 68.8 |
| Period End | 2021-06-30 | 2020-12-31 |
| Value | 657 | 624 |
| Percentage of LongTermDebtAndCapitalLeaseObligations | 7.8 | 7.1 |
| Percentage of Assets | 4.9 | 4.9 |
| Percentage of Assets us-gaap:VariableInterestEntityPrimaryBeneficiary | 0.0 | 0.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 |
| Value | 194 | 237 | 215 |
| Percentage of DeferredIncomeTaxLiabilitiesNet | 100.0 | 100.0 | 100.0 |
| Percentage of Assets | 1.4 | 1.8 | 1.7 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 |
| Value | 92 | 70 | 69 |
| Percentage of MinorityInterest | 100.0 | 100.0 | 100.0 |
| Percentage of Assets | 0.7 | 0.5 | 0.5 |
| Percentage of Assets apa:NoncontrollingInterestALTM | 0.0 | 0.0 | 0.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 |
| Value | 948 | 927 | 925 |
| Percentage of MinorityInterest | 1030.4 | 1324.3 | 1340.6 |
| Percentage of Assets | 7.0 | 7.1 | 7.3 |
| Percentage of Assets apa:NoncontrollingInterestEgypt | 0.0 | 0.0 | 0.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 |
| Value | 539 | 581 | 602 |
| Percentage of OtherLiabilitiesNoncurrent | 100.0 | 100.0 | 100.0 |
| Percentage of Assets | 4.0 | 4.4 | 4.7 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 |
| Value | 131 | 161 | 144 |
| Percentage of OtherLiabilitiesNoncurrent | 24.3 | 27.7 | 23.9 |
| Percentage of Assets | 1.0 | 1.2 | 1.1 |
| Percentage of Assets us-gaap:VariableInterestEntityPrimaryBeneficiary | 0.0 | 0.0 | 0.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 |
| Value | -964000000.0 | -1258000000.0 | -1639000000.0 |
| Percentage of StockholdersEquity | 100.0 | 100.0 | 100.0 |
| Percentage of Assets | -7.1 | -9.6 | -12.9 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-06-30 | 2020-03-31 | 2019-12-31 |
| Value | 76 | -261.0 | -645.0 | -636.0 | -228.0 | 4465 |
| Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Percentage of Assets | 0.6 | -2.0 | -5.1 | -4.9 | -1.7 | 0.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-06-30 | 2020-03-31 | 2019-12-31 |
| Value | 15 | 15 | 14 | 15 | 15 | 16 |
| Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest | 19.7 | -5.7 | -2.2 | -2.4 | -6.6 | 0.4 |
| Percentage of Assets | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 | 0.0 |
| Percentage of Assets us-gaap:AccumulatedOtherComprehensiveIncome | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-06-30 | 2020-03-31 | 2019-12-31 |
| Value | 11704 | 11727 | 11735 | 11744 | 11747 | 11769 |
| Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest | 15400.0 | -4493.1 | -1819.4 | -1846.5 | -5152.2 | 263.6 |
| Percentage of Assets | 86.6 | 89.3 | 92.1 | 90.3 | 87.7 | 0.0 |
| Percentage of Assets us-gaap:AdditionalPaidInCapital | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-06-30 | 2020-03-31 | 2019-12-31 |
| Value | 262 | 262 | 262 | 262 | 262 | 261 |
| Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest | 344.7 | -100.4 | -40.6 | -41.2 | -114.9 | 5.8 |
| Percentage of Assets | 1.9 | 2.0 | 2.1 | 2.0 | 2.0 | 0.0 |
| Percentage of Assets us-gaap:CommonStock | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-06-30 | 2020-03-31 | 2019-12-31 |
| Value | 1040 | 997 | 994 | 999 | 1018 | 1210 |
| Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest | 1368.4 | -382.0 | -154.1 | -157.1 | -446.5 | 27.1 |
| Percentage of Assets | 7.7 | 7.6 | 7.8 | 7.7 | 7.6 | 0.0 |
| Percentage of Assets us-gaap:NoncontrollingInterest | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-06-30 | 2020-03-31 | 2019-12-31 |
| Value | -964.0 | -1258.0 | -1639.0 | -1635.0 | -1246.0 | 3255 |
| Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest | -1268.4 | 482.0 | 254.1 | 257.1 | 546.5 | 72.9 |
| Percentage of Assets | -7.1 | -9.6 | -12.9 | -12.6 | -9.3 | 0.0 |
| Percentage of Assets us-gaap:Parent | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-06-30 | 2020-03-31 | 2019-12-31 |
| Value | -9757.0 | -10073.0 | -10461.0 | -10467.0 | -10081.0 | -5601.0 |
| Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest | -12838.2 | 3859.4 | 1621.9 | 1645.8 | 4421.5 | -125.4 |
| Percentage of Assets | -72.2 | -76.7 | -82.1 | -80.5 | -75.3 | 0.0 |
| Percentage of Assets us-gaap:RetainedEarnings | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-06-30 | 2020-03-31 | 2019-12-31 |
| Value | -3188.0 | -3189.0 | -3189.0 | -3189.0 | -3189.0 | -3190.0 |
| Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest | -4194.7 | 1221.8 | 494.4 | 501.4 | 1398.7 | -71.4 |
| Percentage of Assets | -23.6 | -24.3 | -25.0 | -24.5 | -23.8 | 0.0 |
| Percentage of Assets us-gaap:TreasuryStock | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 |
| Value | 11704 | 11727 | 11735 |
| Percentage of AdditionalPaidInCapital | 100.0 | 100.0 | 100.0 |
| Percentage of Assets | 86.6 | 89.3 | 92.1 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 |
| Value | -9757000000.0 | -10073000000.0 | -10461000000.0 |
| Percentage of RetainedEarningsAccumulatedDeficit | 100.0 | 100.0 | 100.0 |
| Percentage of Assets | -72.2 | -76.7 | -82.1 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 |
| Value | 15 | 15 | 14 |
| Percentage of AccumulatedOtherComprehensiveIncomeLossNetOfTax | 100.0 | 100.0 | 100.0 |
| Percentage of Assets | 0.1 | 0.1 | 0.1 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 |
| Value | 3188 | 3189 | 3189 |
| Percentage of TreasuryStockValue | 100.0 | 100.0 | 100.0 |
| Percentage of Assets | 23.6 | 24.3 | 25.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 |
| Value | 92 | 70 | 69 |
| Percentage of MinorityInterest | 100.0 | 100.0 | 100.0 |
| Percentage of Assets | 0.7 | 0.5 | 0.5 |
| Percentage of Assets apa:NoncontrollingInterestALTM | 0.0 | 0.0 | 0.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 |
| Value | 948 | 927 | 925 |
| Percentage of MinorityInterest | 1030.4 | 1324.3 | 1340.6 |
| Percentage of Assets | 7.0 | 7.1 | 7.3 |
| Percentage of Assets apa:NoncontrollingInterestEgypt | 0.0 | 0.0 | 0.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-06-30 | 2020-03-31 |
| Value | 20 | 40 | 8.0 | 32 |
| Percentage of MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders | 100.0 | 100.0 | 100.0 | 100.0 |
| Percentage of Assets | 0.0 | 0.0 | 0.0 | 0.0 |
| Period End | 2021-06-30 | 2021-03-31 |
| Value | 12 | 11 |
| Percentage of MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders | 60.0 | 27.5 |
| Percentage of Assets | 0.0 | 0.0 |
| Percentage of Assets us-gaap:RedeemablePreferredStock | 0.0 | 0.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-06-30 | 2020-03-31 |
| Value | 20 | 40 | 8.0 | 32 |
| Percentage of MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders | 100.0 | 100.0 | 100.0 | 100.0 |
| Percentage of Assets | 0.0 | 0.0 | 0.0 | 0.0 |
| Percentage of Assets us-gaap:NoncontrollingInterest | 0.0 | 0.0 | 0.0 | 0.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-06-30 | 2020-03-31 |
| Value | 969 | 671 | 84 | 502 |
| Percentage of NetCashProvidedByUsedInOperatingActivities | 100.0 | 100.0 | 100.0 | 100.0 |
| Percentage of Revenues | 0.0 | 0.0 | 0.0 | 0.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-06-30 | 2020-03-31 |
| Value | -126000000.0 | -267000000.0 | -408000000.0 | -509000000.0 |
| Percentage of NetCashProvidedByUsedInInvestingActivities | 100.0 | 100.0 | 100.0 | 100.0 |
| Percentage of Revenues | 0.0 | 0.0 | 0.0 | 0.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-06-30 | 2020-03-31 |
| Value | -132.0 | -128.0 | 31 | 188 |
| Percentage of NetCashProvidedByUsedInFinancingActivities | 100.0 | 100.0 | 100.0 | 100.0 |
| Percentage of Revenues | 0.0 | 0.0 | 0.0 | 0.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-06-30 | 2020-03-31 |
| Value | 711 | 276 | -293.0 | 181 |
| Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect | 100.0 | 100.0 | 100.0 | 100.0 |
| Percentage of Revenues | 0.0 | 0.0 | 0.0 | 0.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-06-30 | 2020-03-31 |
| Value | 3000000.0 | 2000000.0 | 2000000.0 | 2000000.0 |
| Percentage of AmortizationOfFinancingCosts | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-06-30 | 2020-03-31 |
| Value | -44.0 | 21 | -11.0 | -33.0 |
| Percentage of DeferredIncomeTaxExpenseBenefit | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-06-30 | 2020-03-31 |
| Value | 351 | 342 | 418 | 566 |
| Percentage of DepreciationDepletionAndAmortization | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-06-30 | 2020-03-31 |
| Value | 63 | 84 | 79 | 109 |
| Percentage of DepreciationDepletionAndAmortization | 17.9 | 24.6 | 18.9 | 19.3 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-06-30 | 2020-03-31 |
| Value | 137 | 130 | 158 | 161 |
| Percentage of DepreciationDepletionAndAmortization | 39.0 | 38.0 | 37.8 | 28.4 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-06-30 | 2020-03-31 |
| Value | 148 | 125 | 178 | 293 |
| Percentage of DepreciationDepletionAndAmortization | 42.2 | 36.5 | 42.6 | 51.8 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-06-30 | 2020-03-31 |
| Value | 82 | 75 | -67.0 | -80.0 |
| Percentage of IncreaseDecreaseInAccountsPayable | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-06-30 | 2020-03-31 |
| Value | -3.0 | 168 | 38 | -221.0 |
| Percentage of IncreaseDecreaseInAccountsReceivable | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-06-30 | 2020-03-31 |
| Value | -23000000.0 | 3000000.0 | 5000000.0 | -30000000.0 |
| Percentage of IncreaseDecreaseInInventories | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-06-30 | 2020-03-31 |
| Value | 969 | 671 | 84 | 502 |
| Percentage of NetCashProvidedByUsedInOperatingActivities | 100.0 | 100.0 | 100.0 | 100.0 |
| Percentage of Revenues | 0.0 | 0.0 | 0.0 | 0.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-06-30 | 2020-03-31 |
| Value | 408 | 450 | -378.0 | -4622.0 |
| Percentage of ProfitLoss | 100.0 | 100.0 | 100.0 | 100.0 |
| Percentage of Revenues | 0.0 | 0.0 | 0.0 | 0.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-06-30 | 2020-03-31 |
| Value | 115 | 89 | 70 | 77 |
| Percentage of ProfitLoss | 28.2 | 19.8 | -18.5 | -1.7 |
| Percentage of Revenues | 0.0 | 0.0 | 0.0 | 0.0 |
| Percentage of Revenues us-gaap:EquityMethodInvestmentNonconsolidatedInvesteeOrGroupOfInvestees | 41.5 | 35.0 | 40.0 | 43.8 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-06-30 | 2020-03-31 |
| Value | -126000000.0 | -267000000.0 | -408000000.0 | -509000000.0 |
| Percentage of NetCashProvidedByUsedInInvestingActivities | 100.0 | 100.0 | 100.0 | 100.0 |
| Percentage of Revenues | 0.0 | 0.0 | 0.0 | 0.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-06-30 | 2020-03-31 |
| Value | -132.0 | -128.0 | 31 | 188 |
| Percentage of NetCashProvidedByUsedInFinancingActivities | 100.0 | 100.0 | 100.0 | 100.0 |
| Percentage of Revenues | 0.0 | 0.0 | 0.0 | 0.0 |
| Period End | 2021-03-31 | 2020-03-31 |
| Value | 9.0 | 94 |
| Percentage of PaymentsOfDividends | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-06-30 | 2020-03-31 |
| Value | 9.0 | 9.0 | 10.0 | 94 |
| Percentage of PaymentsOfDividendsCommonStock | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-06-30 | 2020-03-31 |
| Value | 0.0 | 1.0 | 6.0 | 19 |
| Percentage of AdditionsToGasGatheringProcessingAndTransmissionFacilities | 0.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2021-03-31 |
| Value | 1000000.0 |
| Percentage of DebtInstrumentRepurchaseDiscountToPar | 100.0 |
| Period End | 2021-05-06 |
| Value | 19714.0 |
| Percentage of DerivativeNonmonetaryFixedPriceTotal | 100.0 |
| Period End | 2021-05-06 |
| Value | 13500.0 |
| Percentage of DerivativeNonmonetaryFixedPriceTotal | 68.5 |
| Period End | 2021-05-06 |
| Value | 6000.0 |
| Percentage of DerivativeNonmonetaryFixedPriceTotal | 30.4 |
| Period End | 2021-06-30 |
| Value | -0.01 |
| Percentage of DilutedSecuritiesEffectOnBasicEarningsPerSharePerShare | 100.0 |
| Period End | 2021-06-30 |
| Value | 44 |
| Percentage of DisposalGroupIncludingDiscontinuedOperationConsiderationAssetRetirementObligationAssumed | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 |
| Value | 0 | 1000000.0 |
| Percentage of EquityMethodInvestmentAccumulatedOtherComprehensiveIncomeLoss | 0.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 |
| Value | 0 | 1000000.0 |
| Percentage of EquityMethodInvestmentAccumulatedOtherComprehensiveIncomeLoss | 0.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-06-30 | 2020-03-31 |
| Value | 3.0 | 21 | 71 | 83 |
| Percentage of EquityMethodInvestmentContribution | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 |
| Value | 2.0 | 21 |
| Percentage of EquityMethodInvestmentContribution | 66.7 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-06-30 | 2020-03-31 |
| Value | 107 | 110 | -34.0 | 103 |
| Percentage of FinancingCostsNet | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-06-30 | 2020-03-31 |
| Value | 33 | 10.0 | 0.0 | -26.0 |
| Percentage of IncreaseDecreaseInDrillingAdvances | 100.0 | 100.0 | 0.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-06-30 | 2020-03-31 |
| Value | -4.0 | -13.0 | 28 | 14 |
| Percentage of IncreaseDecreaseOfDeferredChargesDeferredCreditsAndNoncurrentLiabilities | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 |
| Value | 0.0 | 11 |
| Percentage of NoncontrollingInterestDistributionsPayableToNoncontrollingInterestHolders | 0.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 |
| Value | 12 | 11 |
| Percentage of NoncontrollingInterestDistributionsPayableToNoncontrollingInterestHolders | 0.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-06-30 | 2020-03-31 |
| Value | 74 | 61 | 19 | 13 |
| Percentage of OtherSalesRevenueLossesNet | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 |
| Value | 12 | 11 |
| Percentage of PaymentForDistributionToLimitedPartner | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 |
| Value | 12 | 11 |
| Percentage of RedeemableNoncontrollingInterestEquityCashDistributionsToPreferredUnitLimitedPartners | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 |
| Value | 14 | 6.0 |
| Percentage of RepaymentsOfFixedRateDebt | 100.0 | 100.0 |
| Period End | 2021-03-31 | 2020-03-31 |
| Value | 106 | 48 |
| Percentage of RevenueFromNonCustomers | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-06-30 | 2020-03-31 |
| Value | 1782 | 2092 | 596 | 1279 |
| Percentage of RevenuesAndOther | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2020-06-30 |
| Value | 4.0 | 3.0 |
| Percentage of RevenuesFromCustomersAndNonCustomers | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2020-06-30 |
| Value | 2.0 | 1.0 |
| Percentage of RevenuesFromCustomersAndNonCustomers | 50.0 | 33.3 |
| Period End | 2021-06-30 | 2020-06-30 |
| Value | 141 | 50 |
| Percentage of RevenuesFromCustomersAndNonCustomers | 3525.0 | 1666.7 |
| Period End | 2021-06-30 | 2020-06-30 |
| Value | 27 | 7.0 |
| Percentage of RevenuesFromCustomersAndNonCustomers | 675.0 | 233.3 |
| Period End | 2021-06-30 | 2020-06-30 |
| Value | 65 | 70 |
| Percentage of RevenuesFromCustomersAndNonCustomers | 1625.0 | 2333.3 |
| Period End | 2021-06-30 | 2020-06-30 |
| Value | 134 | 53 |
| Percentage of RevenuesFromCustomersAndNonCustomers | 3350.0 | 1766.7 |
| Period End | 2021-06-30 | 2020-06-30 |
| Value | 216 | 128 |
| Percentage of RevenuesFromCustomersAndNonCustomers | 5400.0 | 4266.7 |
| Period End | 2021-06-30 | 2020-06-30 |
| Value | 432 | 187 |
| Percentage of RevenuesFromCustomersAndNonCustomers | 10800.0 | 6233.3 |
| Period End | 2021-06-30 | 2020-06-30 |
| Value | 493 | 198 |
| Percentage of RevenuesFromCustomersAndNonCustomers | 12325.0 | 6600.0 |
| Period End | 2021-06-30 | 2020-06-30 |
| Value | 247 | 138 |
| Percentage of RevenuesFromCustomersAndNonCustomers | 6175.0 | 4600.0 |
| Period End | 2021-06-30 | 2020-06-30 |
| Value | 499 | 258 |
| Percentage of RevenuesFromCustomersAndNonCustomers | 12475.0 | 8600.0 |
| Period End | 2021-06-30 | 2020-06-30 |
| Value | 768 | 301 |
| Percentage of RevenuesFromCustomersAndNonCustomers | 19200.0 | 10033.3 |
| Period End | 2021-06-30 | 2020-06-30 |
| Value | 1514 | 697 |
| Percentage of RevenuesFromCustomersAndNonCustomers | 37850.0 | 23233.3 |
| Period End | 2021-06-30 | 2020-06-30 |
| Value | 147 | 54 |
| Percentage of RevenuesFromCustomersAndNonCustomers | 3675.0 | 1800.0 |
| Period End | 2021-06-30 | 2020-06-30 |
| Value | 226 | 130 |
| Percentage of RevenuesFromCustomersAndNonCustomers | 5650.0 | 4333.3 |
| Period End | 2021-06-30 | 2020-06-30 |
| Value | 1141 | 513 |
| Percentage of RevenuesFromCustomersAndNonCustomers | 28525.0 | 17100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-06-30 | 2020-03-31 |
| Value | 28 | 28 | 27 | 27 |
| Percentage of AssetRetirementObligationAccretionExpense | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-06-30 | 2020-03-31 |
| Value | 20 | 19 | 18 | 18 |
| Percentage of AssetRetirementObligationAccretionExpense | 71.4 | 67.9 | 66.7 | 66.7 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-06-30 | 2020-03-31 |
| Value | 7.0 | 8.0 | 8.0 | 8.0 |
| Percentage of AssetRetirementObligationAccretionExpense | 25.0 | 28.6 | 29.6 | 29.6 |
| Period End | 2021-06-30 | 2021-03-31 |
| Value | 2000000.0 | 1000000.0 |
| Percentage of AssetRetirementObligationLiabilitiesIncurred | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 |
| Value | 7000000.0 | 3000000.0 |
| Percentage of AssetRetirementObligationLiabilitiesSettled | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-06-30 | 2020-03-31 |
| Value | 131 | 149 | -27.0 | 89 |
| Percentage of CurrentIncomeTaxExpenseBenefit | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-06-30 | 2020-03-31 |
| Value | -48.0 | 148 | -36.0 | 1.0 |
| Percentage of DerivativeGainLossOnDerivativeNet | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-06-30 |
| Value | -48.0 | 148 | -37.0 |
| Percentage of DerivativeGainLossOnDerivativeNet | 100.0 | 100.0 | 102.8 |
| Period End | 2021-06-30 | 2021-03-31 |
| Value | 0.0 | 147 |
| Percentage of DerivativeGainOnDerivative | 0.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-06-30 | 2020-03-31 |
| Value | -113.0 | 158 | -175.0 | -103.0 |
| Percentage of DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2021-03-31 |
| Value | 37 |
| Percentage of DerivativeNonmonetaryNotionalAmountEnergyMeasure | 100.0 |
| Period End | 2021-03-31 |
| Value | 43 |
| Percentage of DerivativeNonmonetaryNotionalAmountEnergyMeasure | 116.6 |
| Period End | 2021-03-31 |
| Value | 37 |
| Percentage of DerivativeNonmonetaryNotionalAmountEnergyMeasure | 100.0 |
| Period End | 2021-03-31 |
| Value | 43 |
| Percentage of DerivativeNonmonetaryNotionalAmountEnergyMeasure | 116.6 |
| Period End | 2021-03-31 |
| Value | 2366000.0 |
| Percentage of DerivativeNonmonetaryNotionalAmountVolume | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 |
| Value | 1242000.0 | 414000.0 |
| Percentage of DerivativeNonmonetaryNotionalAmountVolume | 0.0 | 17.5 |
| Period End | 2021-06-30 | 2021-03-31 |
| Value | 0 | 828000.0 |
| Percentage of DerivativeNonmonetaryNotionalAmountVolume | 0.0 | 35.0 |
| Period End | 2021-06-30 | 2021-03-31 |
| Value | 0 | 2024000.0 |
| Percentage of DerivativeNonmonetaryNotionalAmountVolume | 0.0 | 85.5 |
| Period End | 2021-03-31 |
| Value | 3782000.0 |
| Percentage of DerivativeNonmonetaryNotionalAmountVolume | 159.8 |
| Period End | 2021-06-30 | 2021-03-31 |
| Value | 0 | 1012000.0 |
| Percentage of DerivativeNonmonetaryNotionalAmountVolume | 0.0 | 42.8 |
| Period End | 2021-03-31 |
| Value | 5642000.0 |
| Percentage of DerivativeNonmonetaryNotionalAmountVolume | 238.5 |
| Period End | 2021-06-30 | 2021-03-31 |
| Value | 552000.0 | 1472000.0 |
| Percentage of DerivativeNonmonetaryNotionalAmountVolume | 0.0 | 62.2 |
| Period End | 2021-06-30 | 2021-03-31 |
| Value | 0 | 1012000.0 |
| Percentage of DerivativeNonmonetaryNotionalAmountVolume | 0.0 | 42.8 |
| Period End | 2021-06-30 |
| Value | -6000000.0 |
| Percentage of DilutiveSecurities | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-06-30 | 2020-03-31 |
| Value | 10.0 | 9.0 | 9.0 | 10.0 |
| Percentage of DividendsCommonStockCash | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-06-30 | 2020-03-31 |
| Value | 10.0 | 9.0 | 9.0 | 10.0 |
| Percentage of DividendsCommonStockCash | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-06-30 | 2020-03-31 |
| Value | 10.0 | 9.0 | 9.0 | 10.0 |
| Percentage of DividendsCommonStockCash | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-06-30 | 2020-03-31 |
| Value | 26 | 49 | 72 | 57 |
| Percentage of ExplorationExpense | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-06-30 | 2020-03-31 |
| Value | 7.0 | 5.0 | 4.0 | 2.0 |
| Percentage of ExplorationExpense | 26.9 | 10.2 | 5.6 | 3.5 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-06-30 | 2020-03-31 |
| Value | 3.0 | 20 | 15 | 2.0 |
| Percentage of ExplorationExpense | 11.5 | 40.8 | 20.8 | 3.5 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-06-30 | 2020-03-31 |
| Value | 14 | 8.0 | 22 | 18 |
| Percentage of ExplorationExpense | 53.8 | 16.3 | 30.6 | 31.6 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-06-30 | 2020-03-31 |
| Value | 2.0 | 16 | 31 | 35 |
| Percentage of ExplorationExpense | 7.7 | 32.7 | 43.1 | 61.4 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-06-30 | 2020-03-31 |
| Value | -113.0 | 158 | -175.0 | -103.0 |
| Percentage of GainLossOnDerivativeInstrumentsNetPretax | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-06-30 | 2020-03-31 |
| Value | 65 | 2.0 | 0.0 | 25 |
| Percentage of GainLossOnSaleOfBusiness | 100.0 | 100.0 | 0.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-06-30 | 2020-03-31 |
| Value | 65 | 2.0 | 0.0 | 6.0 |
| Percentage of GainLossOnSaleOfOilAndGasProperty | 100.0 | 100.0 | 0.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-06-30 | 2020-03-31 |
| Value | 65 | 2.0 | 0.0 | 25 |
| Percentage of GainLossOnSaleOfProperties | 100.0 | 100.0 | 0.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-06-30 | 2020-03-31 |
| Value | 2.0 | 2.0 | 22 | 511 |
| Percentage of ImpairmentOfOilAndGasProperties | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-06-30 | 2020-03-31 |
| Value | 1.0 | 16 | 29 | 4000 |
| Percentage of ImpairmentOfOilAndGasProperties | 50.0 | 800.0 | 131.8 | 782.8 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-06-30 | 2020-03-31 |
| Value | 3.0 | 18 | 31 | 19 |
| Percentage of ImpairmentOfOilAndGasProperties | 150.0 | 900.0 | 140.9 | 3.7 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-06-30 | 2020-03-31 |
| Value | 1.0 | 16 | 29 | 17 |
| Percentage of ImpairmentOfOilAndGasProperties | 50.0 | 800.0 | 131.8 | 3.3 |
| Period End | 2021-06-30 | 2021-03-31 |
| Value | 29 | 21 |
| Percentage of IncomeLossFromEquityMethodInvestments | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 |
| Value | -6.0 | -5.0 |
| Percentage of IncomeLossFromEquityMethodInvestments | -20.7 | -23.8 |
| Period End | 2021-06-30 | 2021-03-31 |
| Value | 10.0 | 9.0 |
| Percentage of IncomeLossFromEquityMethodInvestments | 34.5 | 42.9 |
| Period End | 2021-06-30 | 2021-03-31 |
| Value | 16 | 11 |
| Percentage of IncomeLossFromEquityMethodInvestments | 55.2 | 52.4 |
| Period End | 2021-06-30 | 2021-03-31 |
| Value | 9.0 | 6.0 |
| Percentage of IncomeLossFromEquityMethodInvestments | 31.0 | 28.6 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-06-30 | 2020-03-31 |
| Value | 83 | -66.0 | 25 | -173.0 |
| Percentage of IncreaseDecreaseInAccruedLiabilities | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-06-30 | 2020-03-31 |
| Value | 8.0 | 10.0 | 9.0 | 7.0 |
| Percentage of IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-06-30 | 2020-03-31 |
| Value | 2000000.0 | 2000000.0 | 2000000.0 | 4000000.0 |
| Percentage of InterestCostsCapitalizedAdjustment | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-06-30 | 2020-03-31 |
| Value | 3000000.0 | 2000000.0 | 1000000.0 | 2000000.0 |
| Percentage of InvestmentIncomeInterest | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2021-03-31 |
| Value | 200 |
| Percentage of LossContingencyDamagesSoughtValue | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 |
| Value | 0.0 | 250 |
| Percentage of LossContingencyDamagesSoughtValue | 0.0 | 125.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-06-30 | 2020-03-31 |
| Value | 0 | 1000000.0 | 0 | -1000000.0 |
| Percentage of OciEquityMethodInvestmentAfterTax | 0.0 | 100.0 | 0.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-06-30 | 2020-03-31 |
| Value | 311 | 264 | 264 | 335 |
| Percentage of OperatingLeaseExpense | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-06-30 | 2020-03-31 |
| Value | 0.0 | -1.0 | 1.0 | -1.0 |
| Percentage of OperatingLeaseExpense | 0.0 | -0.4 | 0.4 | -0.3 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-06-30 | 2020-03-31 |
| Value | 98 | 75 | 75 | 81 |
| Percentage of OperatingLeaseExpense | 31.5 | 28.4 | 28.4 | 24.2 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-06-30 | 2020-03-31 |
| Value | 114 | 104 | 98 | 112 |
| Percentage of OperatingLeaseExpense | 36.7 | 39.4 | 37.1 | 33.4 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-06-30 | 2020-03-31 |
| Value | 99 | 86 | 90 | 143 |
| Percentage of OperatingLeaseExpense | 31.8 | 32.6 | 34.1 | 42.7 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-06-30 | 2020-03-31 |
| Value | -6.0 | 20 | -22.0 | 8.0 |
| Percentage of OtherNoncashIncomeExpense | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-06-30 | 2020-03-31 |
| Value | -5.0 | -7.0 | 2.0 | 21 |
| Percentage of PaymentsForProceedsFromOtherInvestingActivities | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 |
| Value | 45 | 31 |
| Percentage of PaymentsOfDistributionsToAffiliates | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 |
| Value | 13 | 12 |
| Percentage of PaymentsOfDistributionsToAffiliates | 28.9 | 38.7 |
| Period End | 2021-06-30 | 2021-03-31 |
| Value | 22 | 8.0 |
| Percentage of PaymentsOfDistributionsToAffiliates | 48.9 | 25.8 |
| Period End | 2021-06-30 | 2021-03-31 |
| Value | 10.0 | 11 |
| Percentage of PaymentsOfDistributionsToAffiliates | 22.2 | 35.5 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-06-30 | 2020-03-31 |
| Value | 1000000.0 | 2000000.0 | 2000000.0 | 1000000.0 |
| Percentage of PaymentsToAcquireOilAndGasProperty | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2021-03-31 | 2020-06-30 | 2020-03-31 |
| Value | 2000000.0 | 2000000.0 | 1000000.0 |
| Percentage of PaymentsToAcquireOilAndGasProperty | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-06-30 | 2020-03-31 |
| Value | 305 | 253 | 327 | 511 |
| Percentage of PaymentsToExploreAndDevelopOilAndGasProperties | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-06-30 | 2020-03-31 |
| Value | 20 | 40 | 8.0 | 32 |
| Percentage of PaymentsToMinorityShareholders | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-06-30 | 2020-03-31 |
| Value | -11000000.0 | -10000000.0 | -27000000.0 | -8000000.0 |
| Percentage of ProceedsFromPaymentsForOtherFinancingActivities | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-06-30 | 2020-03-31 |
| Value | -65.0 | -85.0 | 315 | 250 |
| Percentage of ProceedsFromRepaymentsOfLinesOfCredit | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-06-30 | 2020-03-31 |
| Value | 0.0 | 33 | 25 | 72 |
| Percentage of ProceedsFromRepaymentsOfLinesOfCredit | -0.0 | -38.8 | 7.9 | 28.8 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-06-30 | 2020-03-31 |
| Value | 178 | 3.0 | 0.0 | 126 |
| Percentage of ProceedsFromSaleOfOilAndGasPropertyAndEquipment | 100.0 | 100.0 | 0.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-06-30 | 2020-03-31 |
| Value | 178 | 3.0 | 2.0 | 45 |
| Percentage of ProceedsFromSaleOfOilAndGasPropertyAndEquipment | 100.0 | 100.0 | 0.0 | 35.7 |
| Period End | 2021-06-30 | 2020-06-30 | 2020-03-31 |
| Value | 4.0 | 10.0 | 27 |
| Percentage of RestructuringCharges | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-06-30 | 2020-03-31 |
| Value | 9.0 | 37 | 54 | 43 |
| Percentage of ResultsOfOperationsDryHoleCosts | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2020-06-30 |
| Value | 107 | -18.0 |
| Percentage of RevenueNotFromContractWithCustomer | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-06-30 | 2020-03-31 |
| Value | 17 | -2.0 | -6.0 | 11 |
| Percentage of StockholdersEquityOther | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-06-30 | 2020-03-31 |
| Value | 0.0 | -1.0 | 0.0 | 1.0 |
| Percentage of StockholdersEquityOther | 0.0 | 50.0 | -0.0 | 9.1 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-06-30 | 2020-03-31 |
| Value | 13 | -1.0 | -6.0 | 12 |
| Percentage of StockholdersEquityOther | 76.5 | 50.0 | 100.0 | 109.1 |
| Period End | 2021-06-30 |
| Value | 5.0 |
| Percentage of StockholdersEquityOther | 29.4 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-06-30 | 2020-03-31 |
| Value | 12 | -2.0 | -6.0 | 11 |
| Percentage of StockholdersEquityOther | 70.6 | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2020-06-30 | 2020-03-31 |
| Value | -1.0 | 0.0 | -1.0 |
| Percentage of StockholdersEquityOther | -5.9 | -0.0 | -9.1 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-06-30 | 2020-03-31 |
| Value | 51 | 44 | 23 | 33 |
| Percentage of TaxesOther | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-06-30 | 2020-03-31 |
| Value | 4.0 | 4.0 | 3.0 | 3.0 |
| Percentage of TaxesOther | 7.8 | 9.1 | 13.0 | 9.1 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-06-30 | 2020-03-31 |
| Value | 47 | 40 | 20 | 30 |
| Percentage of TaxesOther | 92.2 | 90.9 | 87.0 | 90.9 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-06-30 | 2020-03-31 |
| Value | 24 | 19 | 19 | 18 |
| Percentage of TemporaryEquityNetIncome | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 |
| Value | 0 |
| Percentage of TreasuryStockAcquiredAverageCostPerShare | 0.0 |
| Period End | 2021-06-30 |
| Value | 0.0 |
| Percentage of TreasuryStockSharesAcquired | 0.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-06-30 | 2020-03-31 |
| Value | -65.0 | 10.0 | -138.0 | -103.0 |
| Percentage of UnrealizedGainLossOnDerivatives | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-06-30 | 2020-03-31 |
| Value | 2.0 | 1.0 | -17.0 | -53.0 |
| Percentage of UnrealizedGainLossOnDerivatives | -3.1 | 10.0 | 12.3 | 51.5 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-06-30 | 2020-03-31 |
| Value | -98.0 | 26 | -111.0 | 17 |
| Percentage of UnrealizedGainLossOnDerivatives | 150.8 | 260.0 | 80.4 | -16.5 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-06-30 | 2020-03-31 |
| Value | 31 | -17.0 | -11.0 | -62.0 |
| Percentage of UnrealizedGainLossOnDerivatives | -47.7 | -170.0 | 8.0 | 60.2 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-06-30 | 2020-03-31 |
| Value | -65.0 | 10.0 | -138.0 | -103.0 |
| Percentage of UnrealizedGainLossOnDerivatives | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 |
| Value | 166 | 185 | 167 |
| Percentage of AccruedExplorationAndDevelopment | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 |
| Value | 116 | 92 | 91 |
| Percentage of AccruedOperatingExpenses | 100.0 | 100.0 | 100.0 |
| Period End | 2021-03-31 |
| Value | 64.2 |
| Percentage of DerivativeWeightedAverageFixedPrice | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 |
| Value | 63.08 | 63.14 |
| Percentage of DerivativeWeightedAverageFixedPrice | 0.0 | 98.3 |
| Period End | 2021-03-31 |
| Value | 61.2 |
| Percentage of DerivativeWeightedAverageFixedPrice | 95.3 |
| Period End | 2021-06-30 | 2021-03-31 |
| Value | 60.15 | 60.18 |
| Percentage of DerivativeWeightedAverageFixedPrice | 0.0 | 93.7 |
| Period End | 2021-05-06 |
| Value | 64.07 |
| Percentage of DerivativeWeightedAveragePrice | 100.0 |
| Period End | 2021-05-06 |
| Value | 63.06 |
| Percentage of DerivativeWeightedAveragePrice | 98.4 |
| Period End | 2021-05-06 |
| Value | 60.1 |
| Percentage of DerivativeWeightedAveragePrice | 93.8 |
| Period End | 2021-03-31 |
| Value | 0.56 |
| Percentage of DerivativeWeightedAveragePriceDifferential | 100.0 |
| Period End | 2021-03-31 |
| Value | -0.07 |
| Percentage of DerivativeWeightedAveragePriceDifferential | -12.5 |
| Period End | 2021-06-30 |
| Value | -0.08 |
| Percentage of DerivativeWeightedAveragePriceDifferential | 0.0 |
| Period End | 2021-06-30 |
| Value | 0.02 |
| Percentage of DerivativeWeightedAveragePriceDifferential | 0.0 |
| Period End | 2021-03-31 |
| Value | -0.08 |
| Percentage of DerivativeWeightedAveragePriceDifferential | -14.3 |
| Period End | 2021-06-30 |
| Value | -0.07 |
| Percentage of DerivativeWeightedAveragePriceDifferential | 0.0 |
| Period End | 2021-03-31 |
| Value | -0.43 |
| Percentage of DerivativeWeightedAveragePriceDifferential | -76.8 |
| Period End | 2021-06-30 |
| Value | -0.45 |
| Percentage of DerivativeWeightedAveragePriceDifferential | 0.0 |
| Period End | 2021-06-30 |
| Value | -0.4 |
| Percentage of DerivativeWeightedAveragePriceDifferential | 0.0 |
| Period End | 2021-03-31 |
| Value | -0.45 |
| Percentage of DerivativeWeightedAveragePriceDifferential | -80.4 |
| Period End | 2021-06-30 |
| Value | -0.42 |
| Percentage of DerivativeWeightedAveragePriceDifferential | 0.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 |
| Value | 74 | 111 | 113 |
| Percentage of DrillingAdvances | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 |
| Value | 668 | 671 | 670 |
| Percentage of GatheringProcessingAndTransmissionFacilitiesNoncurrent | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 |
| Value | 721 | 713 |
| Percentage of PreferredUnitsRedemptionValue | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 |
| Value | 742 | 761 |
| Percentage of RedeemableNoncontrollingInterestIncludingEmbeddedDerivativeLiability | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 |
| Value | 1949 | 1970 | 1944 |
| Percentage of AssetRetirementObligation | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 |
| Value | 1893 | 1914 | 1888 |
| Percentage of AssetRetirementObligationsNoncurrent | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 |
| Value | 66 | 65 | 64 |
| Percentage of AssetRetirementObligationsNoncurrent | 3.5 | 3.4 | 3.4 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 |
| Value | 260 | 237 | 197 |
| Percentage of CapitalizedExploratoryWellCosts | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 |
| Value | 993 | 957 | 670 |
| Percentage of ContractWithCustomerAssetNet | 100.0 | 100.0 | 100.0 |
| Period End | 2021-03-31 | 2020-12-31 |
| Value | 65 | 150 |
| Percentage of DebtInstrumentCarryingAmount | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 |
| Value | 657 | 657 | 624 |
| Percentage of DebtInstrumentCarryingAmount | 0.0 | 1010.8 | 416.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 |
| Value | 8030 | 8045 | 8052 |
| Percentage of DebtInstrumentCarryingAmount | 0.0 | 12376.9 | 5368.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 |
| Value | 8500 | 8000 | 8500 |
| Percentage of DebtInstrumentFairValue | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 |
| Value | 20 | 6.0 |
| Percentage of DebtInstrumentRepurchaseAmount | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 |
| Value | 22 | 7.0 |
| Percentage of DebtInstrumentRepurchasedFaceAmount | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 |
| Value | 34 | 34 | 35 |
| Percentage of DebtInstrumentUnamortizedDiscount | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 |
| Value | 512 | 497 | 526 |
| Percentage of DeferredCostsAndOtherAssets | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 |
| Value | 9.0 | 6.0 | 5.0 |
| Percentage of DeferredCostsAndOtherAssets | 1.8 | 1.2 | 1.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 |
| Value | 54 | 55 | 57 |
| Percentage of DeferredFinanceCostsNet | 100.0 | 100.0 | 100.0 |
| Period End | 2021-03-31 |
| Value | 1000000.0 |
| Percentage of DerivativeAssetFairValueGrossLiability | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 |
| Value | 2.0 | 34 | 6.0 |
| Percentage of DerivativeAssets | 100.0 | 100.0 | 100.0 |
| Period End | 2021-03-31 | 2020-12-31 |
| Value | 4.0 | 5.0 |
| Percentage of DerivativeAssets | 11.8 | 83.3 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 |
| Value | 2.0 | 38 | 11 |
| Percentage of DerivativeAssets | 100.0 | 111.8 | 183.3 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 |
| Value | 2.0 | 38 | 11 |
| Percentage of DerivativeAssets | 100.0 | 111.8 | 183.3 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 |
| Value | 2.0 | 39 | 11 |
| Percentage of DerivativeFairValueOfDerivativeAsset | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 |
| Value | 2.0 | 39 | 11 |
| Percentage of DerivativeFairValueOfDerivativeAsset | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 |
| Value | 50 | 52 | 53 |
| Percentage of DerivativeFairValueOfDerivativeLiability | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 |
| Value | 64 | 2.0 |
| Percentage of DerivativeFairValueOfDerivativeLiability | 128.0 | 3.8 |
| Period End | 2021-06-30 | 2020-12-31 |
| Value | 125 | 139 |
| Percentage of DerivativeFairValueOfDerivativeLiability | 250.0 | 262.3 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 |
| Value | 50 | 52 | 53 |
| Percentage of DerivativeFairValueOfDerivativeLiability | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 |
| Value | 64 | 2.0 |
| Percentage of DerivativeFairValueOfDerivativeLiability | 128.0 | 3.8 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 |
| Value | 125 | 156 | 139 |
| Percentage of DerivativeFairValueOfDerivativeLiability | 250.0 | 300.0 | 262.3 |
| Period End | 2021-06-30 | 2021-03-31 |
| Value | 125 | 156 |
| Percentage of DerivativeLiabilities | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 |
| Value | 181 | 208 | 192 |
| Percentage of DerivativeLiabilities | 144.8 | 133.3 | 0.0 |
| Period End | 2021-06-30 | 2021-03-31 |
| Value | 58 | 1.0 |
| Percentage of DerivativeLiabilities | 46.4 | 0.6 |
| Period End | 2021-03-31 |
| Value | 156 |
| Percentage of DerivativeLiabilities | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 |
| Value | 50 | 52 | 53 |
| Percentage of DerivativeLiabilities | 40.0 | 33.3 | 0.0 |
| Period End | 2021-06-30 | 2021-03-31 |
| Value | 64 | 1.0 |
| Percentage of DerivativeLiabilities | 51.2 | 0.6 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 |
| Value | 125 | 156 | 139 |
| Percentage of DerivativeLiabilities | 100.0 | 100.0 | 0.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 |
| Value | 239 | 209 | 192 |
| Percentage of DerivativeLiabilities | 191.2 | 134.0 | 0.0 |
| Period End | 2021-06-30 |
| Value | 58 |
| Percentage of DerivativeLiabilitiesCurrent | 100.0 |
| Period End | 2021-03-31 |
| Value | 1000000.0 |
| Percentage of DerivativeLiabilityFairValueGrossAsset | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 |
| Value | 38.33 | 38.75 |
| Percentage of EmbeddedDerivativeLiabilityMeasurementInput | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 |
| Value | 11.5 | 12.51 |
| Percentage of EmbeddedDerivativeLiabilityMeasurementInput | 30.0 | 32.3 |
| Period End | 2021-06-30 | 2021-03-31 |
| Value | 5.62 | 7.15 |
| Percentage of EmbeddedDerivativeLiabilityMeasurementInput | 14.7 | 18.5 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 |
| Value | 147 | 91 | 170 |
| Percentage of EmployeeRelatedLiabilitiesCurrent | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 |
| Value | 37 | 37 | 38 |
| Percentage of EquityMethodInvestmentDifferenceBetweenCarryingAmountAndUnderlyingEquity | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 |
| Value | 1554 | 1567 | 1555 |
| Percentage of EquityMethodInvestments | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 |
| Value | 1554 | 1567 | 1555 |
| Percentage of EquityMethodInvestments | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 |
| Value | 167 | 172 | 176 |
| Percentage of EquityMethodInvestments | 10.7 | 11.0 | 11.3 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 |
| Value | 278 | 281 | 284 |
| Percentage of EquityMethodInvestments | 17.9 | 17.9 | 18.3 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 |
| Value | 635 | 639 | 615 |
| Percentage of EquityMethodInvestments | 40.9 | 40.8 | 39.5 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 |
| Value | 474 | 475 | 480 |
| Percentage of EquityMethodInvestments | 30.5 | 30.3 | 30.9 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 |
| Value | 36 | 37 | 38 |
| Percentage of FinanceLeaseLiability | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 |
| Value | 125 | 138 | 140 |
| Percentage of InterestPayableCurrent | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 |
| Value | 561 | 573 | 633 |
| Percentage of LettersOfCreditOutstandingAmount | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 |
| Value | 34 | 34 | 17 |
| Percentage of LettersOfCreditOutstandingAmount | 6.1 | 5.9 | 2.7 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 |
| Value | 2626 | 2732 | 2705 |
| Percentage of LiabilitiesOtherThanLongtermDebtNoncurrent | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 |
| Value | 657 | 657 | 624 |
| Percentage of LineOfCredit | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2020-12-31 |
| Value | 215 | 2.0 |
| Percentage of LongTermDebtAndCapitalLeaseObligationsCurrent | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2020-12-31 |
| Value | 8635 | 8772 |
| Percentage of LongTermDebtAndCapitalLeaseObligationsIncludingCurrentMaturities | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 |
| Value | 71 | 62 |
| Percentage of LossContingencyAccrualAtCarryingValue | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 |
| Value | 13 | 60 |
| Percentage of LossContingencyEstimateOfPossibleLoss | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 |
| Value | 40437 | 42054 | 41819 |
| Percentage of OilAndGasPropertySuccessfulEffortMethodGross | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 |
| Value | 117 | 103 | 97 |
| Percentage of OtherSundryLiabilitiesCurrent | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 |
| Value | 1140 | 1139 | 1140 |
| Percentage of PropertyPlantAndEquipmentOther | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 |
| Value | 4.0 | 3.0 | 3.0 |
| Percentage of PropertyPlantAndEquipmentOther | 0.4 | 0.3 | 0.3 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 |
| Value | 617 | 605 | 608 |
| Percentage of RedeemableNoncontrollingInterestEquityCarryingAmount | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2019-12-31 |
| Value | 617 | 605 | 608 | 555 |
| Percentage of RedeemableNoncontrollingInterestEquityCarryingAmount | 100.0 | 100.0 | 100.0 | 0.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-06-30 | 2020-03-31 | 2019-12-31 |
| Value | 617 | 605 | 608 | 592 | 573 | 555 |
| Percentage of RedeemableNoncontrollingInterestEquityCarryingAmount | 100.0 | 100.0 | 100.0 | 0.0 | 0.0 | 0.0 |
| Period End | 2021-06-30 | 2020-12-31 |
| Value | 4.0 | 79 |
| Percentage of RestructuringAndRelatedCostCostIncurredToDate1 | 100.0 | 100.0 |
| Period End | 2021-03-31 |
| Value | 3000000.0 |
| Percentage of RetainedEarningsUndistributedEarningsFromEquityMethodInvestees | 100.0 |
