1.0.0.3 false Statement of Consolidated Cash Flows (Unaudited) (USD $) In Thousands false 1 $ false false USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 USDEPS Divide http://www.xbrl.org/2003/iso4217 USD iso4217 http://www.xbrl.org/2003/instance shares xbrli 0 false 2 $ false false USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 USDEPS Divide http://www.xbrl.org/2003/iso4217 USD iso4217 http://www.xbrl.org/2003/instance shares xbrli 0 5 CASH FLOWS FROM OPERATING ACTIVITIES: 3 us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract us-gaap true na duration string No definition available. false false false false false true false false false 1 false false 0 0 false false 2 false false 0 0 false false No definition available. false 6 Net income (loss) 4 us-gaap_ProfitLoss us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 true true -870204000 -870204 false false 2 true true 3657567000 3657567 false false No definition available. No authoritative reference available. false 7 Adjustments to reconcile net income (loss) to net cash provided by operating activities: 4 us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract us-gaap true na duration string No definition available. false false false false false true false false false 1 false false 0 0 false false 2 false false 0 0 false false No definition available. false 8 Depreciation, depletion and amortization 5 us-gaap_DepreciationDepletionAndAmortization us-gaap true debit duration monetary No definition available. false false false false false false false false false 1 false true 4598035000 4598035 false false 2 false true 1849044000 1849044 false false No definition available. No authoritative reference available. false 9 Asset retirement obligation accretion 5 apa_AssetRetirementObligationAccretion apa false debit duration monetary Asset retirement obligation accretion false false false false false false false false false 1 false true 79274000 79274 false false 2 false true 77146000 77146 false false Asset retirement obligation accretion No authoritative reference available. false 10 Provision for (benefit from) deferred income taxes 5 us-gaap_DeferredIncomeTaxExpenseBenefit us-gaap true debit duration monetary No definition available. false false false false false false false false false 1 false true -409069000 -409069 false false 2 false true 679902000 679902 false false No definition available. No authoritative reference available. false 11 Unrealized loss on derivatives 5 us-gaap_UnrealizedGainLossOnDerivatives us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false true 0 0 false false 2 false true 35586000 35586 false false No definition available. No authoritative reference available. false 12 Other 5 us-gaap_AdjustmentsNoncashItemsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesOther us-gaap true debit duration monetary No definition available. false false false false false false false false false 1 false true 140527000 140527 false false 2 false true -11231000 -11231 false false No definition available. No authoritative reference available. false 13 Changes in operating assets and liabilities: 5 us-gaap_IncreaseDecreaseInOperatingCapitalAbstract us-gaap true na duration string No definition available. false false false false false true false false false 1 false false 0 0 false false 2 false false 0 0 false false No definition available. false 14 Receivables 6 us-gaap_IncreaseDecreaseInReceivables us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false true -228095000 -228095 false false 2 false true 251920000 251920 false false No definition available. No authoritative reference available. false 15 Inventories 6 us-gaap_IncreaseDecreaseInInventories us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false true 11897000 11897 false false 2 false true -7729000 -7729 false false No definition available. No authoritative reference available. false 16 Advances and other 6 apa_IncreaseDecreaseAdvancesAndOther apa false credit duration monetary Increase Decrease Advances and Other. false false false false false false false false false 1 false true -49569000 -49569 false false 2 false true 27891000 27891 false false Increase Decrease Advances and Other. No authoritative reference available. false 17 Deferred charges and other 6 us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false true 868000 868 false false 2 false true -200038000 -200038 false false No definition available. No authoritative reference available. false 18 Accounts payable 6 us-gaap_IncreaseDecreaseInAccountsPayable us-gaap true debit duration monetary No definition available. false false false false false false false false false 1 false true -183884000 -183884 false false 2 false true 71188000 71188 false false No definition available. No authoritative reference available. false 19 Accrued expenses 6 us-gaap_IncreaseDecreaseInAccruedLiabilities us-gaap true debit duration monetary No definition available. false false false false false false false false false 1 false true -351153000 -351153 false false 2 false true -367553000 -367553 false false No definition available. No authoritative reference available. false 20 Deferred credits and noncurrent liabilities 6 apa_IncreaseDecreaseInDeferredCreditsAndNoncurrentLiabilities apa false debit duration monetary Deferred credits and noncurrent liabilities false false false false false false false false false 1 false true -59156000 -59156 false false 2 false true -35125000 -35125 false false Deferred credits and noncurrent liabilities No authoritative reference available. true 21 NET CASH PROVIDED BY OPERATING ACTIVITIES 4 us-gaap_NetCashProvidedByUsedInOperatingActivities us-gaap true na duration monetary No definition available. false false false false false false false false false 1 false true 2679471000 2679471 false false 2 false true 6028568000 6028568 false false No definition available. No authoritative reference available. true 22 CASH FLOWS FROM INVESTING ACTIVITIES: 3 us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract us-gaap true na duration string No definition available. false false false false false true false false false 1 false false 0 0 false false 2 false false 0 0 false false No definition available. false 23 Additions to oil and gas property 4 us-gaap_PaymentsToAcquireOilAndGasProperty us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false true -2838537000 -2838537 false false 2 false true -4062975000 -4062975 false false No definition available. No authoritative reference available. false 24 Additions to gas gathering, transmission and processing facilities 4 apa_AdditionsToGasGatheringTransmissionAndProcessingFacilities apa false debit duration monetary Additions to gas gathering, transmission and processing Facilities false false false false false false false false false 1 false true -203783000 -203783 false false 2 false true -420850000 -420850 false false Additions to gas gathering, transmission and processing Facilities No authoritative reference available. false 25 Acquisition of Marathon properties 4 us-gaap_PaymentsToAcquirePropertyPlantAndEquipment us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false true -181133000 -181133 false false 2 false true 0 0 false false No definition available. No authoritative reference available. false 26 Short-term investments 4 us-gaap_ProceedsFromSaleOfShortTermInvestments us-gaap true debit duration monetary No definition available. false false false false false false false false false 1 false true 791999000 791999 false false 2 false true 0 0 false false No definition available. No authoritative reference available. false 27 Restricted cash 4 us-gaap_IncreaseDecreaseInRestrictedCash us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false true 13880000 13880 false false 2 false true -13844000 -13844 false false No definition available. No authoritative reference available. false 28 Proceeds from sale of oil and gas properties 4 us-gaap_ProceedsFromSaleOfOilAndGasPropertyAndEquipment us-gaap true debit duration monetary No definition available. false false false false false false false false false 1 false true 0 0 false false 2 false true 306701000 306701 false false No definition available. No authoritative reference available. false 29 Other, net 4 us-gaap_PaymentsForProceedsFromOtherInvestingActivities us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false true -98096000 -98096 false false 2 false true -42509000 -42509 false false No definition available. No authoritative reference available. true 30 NET CASH USED IN INVESTING ACTIVITIES 4 us-gaap_NetCashProvidedByUsedInInvestingActivities us-gaap true debit duration monetary No definition available. false false false false false false false false false 1 false true -2515670000 -2515670 false false 2 false true -4233477000 -4233477 false false No definition available. No authoritative reference available. true 31 CASH FLOWS FROM FINANCING ACTIVITIES: 3 us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract us-gaap true na duration string No definition available. false false false false false true false false false 1 false false 0 0 false false 2 false false 0 0 false false No definition available. false 32 Commercial paper, credit facility and bank notes, net 4 us-gaap_ProceedsFromRepaymentsOfOtherDebt us-gaap true debit duration monetary No definition available. false false false false false false false false false 1 false true 230176000 230176 false false 2 false true -169042000 -169042 false false No definition available. No authoritative reference available. false 33 Payments on fixed-rate notes 4 apa_PaymentsOnFixedRateNotes apa false credit duration monetary Payments On fixed Rate Notes. false false false false false false false false false 1 false true -100000000 -100000 false false 2 false true -353000 -353 false false Payments On fixed Rate Notes. No authoritative reference available. false 34 Dividends paid 4 us-gaap_PaymentsOfDividends us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false true -155125000 -155125 false false 2 false true -187735000 -187735 false false No definition available. No authoritative reference available. false 35 Common stock activity 4 us-gaap_ProceedsFromIssuanceOfCommonStock us-gaap true debit duration monetary No definition available. false false false false false false false false false 1 false true 19028000 19028 false false 2 false true 31207000 31207 false false No definition available. No authoritative reference available. false 36 Treasury stock activity, net 4 us-gaap_ProceedsFromSaleOfTreasuryStock us-gaap true debit duration monetary No definition available. false false false false false false false false false 1 false true 5344000 5344 false false 2 false true 4171000 4171 false false No definition available. No authoritative reference available. false 37 Cost of debt and equity transactions 4 us-gaap_PaymentOfFinancingAndStockIssuanceCosts us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false true -618000 -618 false false 2 false true -1224000 -1224 false false No definition available. No authoritative reference available. false 38 Other 4 us-gaap_ProceedsFromPaymentsForOtherFinancingActivities us-gaap true debit duration monetary No definition available. false false false false false false false false false 1 false true 13308000 13308 false false 2 false true 46666000 46666 false false No definition available. No authoritative reference available. true 39 NET CASH PROVIDED BY (USED IN) FINANCING ACTIVITIES 4 us-gaap_NetCashProvidedByUsedInFinancingActivities us-gaap true debit duration monetary No definition available. false false false false false false false false false 1 false true 12113000 12113 false false 2 false true -276310000 -276310 false false No definition available. No authoritative reference available. true 40 NET INCREASE IN CASH AND CASH EQUIVALENTS 3 us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease us-gaap true na duration monetary No definition available. false false false false false false false false false 1 false true 175914000 175914 false false 2 false true 1518781000 1518781 false false No definition available. No authoritative reference available. false 41 CASH AND CASH EQUIVALENTS AT BEGINNING OF YEAR 3 us-gaap_CashAndCashEquivalentsAtCarryingValue us-gaap true debit instant monetary No definition available. false false false false false false true false false 1 false true 1181450000 1181450 false false 2 false true 125823000 125823 false false No definition available. No authoritative reference available. false 42 CASH AND CASH EQUIVALENTS AT END OF PERIOD 3 us-gaap_CashAndCashEquivalentsAtCarryingValue us-gaap true debit instant monetary No definition available. false false false false false false false true false 1 false true 1357364000 1357364 false false 2 false true 1644604000 1644604 false false No definition available. No authoritative reference available. false 43 SUPPLEMENTARY CASH FLOW DATA: 3 us-gaap_SupplementalCashFlowInformationAbstract us-gaap true na duration string No definition available. false false false false false true false false false 1 false false 0 0 false false 2 false false 0 0 false false No definition available. false 44 Interest paid, net of capitalized interest 4 us-gaap_InterestPaidNet us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false true 199570000 199570 false false 2 false true 137106000 137106 false false No definition available. No authoritative reference available. false 45 Income taxes paid, net of refunds 4 us-gaap_IncomeTaxesPaidNet us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 true true 461024000 461024 false false 2 true true 1512864000 1512864 false false No definition available. No authoritative reference available. false false 2 41 false Thousands UnKnown UnKnown false true