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Supplemental Guarantor Information - Supplemental Condensed Consolidating Statement of Operations and Comprehensive Income (Detail) (USD $)
In Millions, unless otherwise specified
3 Months Ended 12 Months Ended
Dec. 31, 2014
Sep. 30, 2014
Jun. 30, 2014
Mar. 31, 2014
Dec. 31, 2013
Sep. 30, 2013
Jun. 30, 2013
Mar. 31, 2013
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
REVENUES AND OTHER:                      
Oil and gas production revenues                 $ 13,749us-gaap_ExplorationAndProductionRevenue $ 15,911us-gaap_ExplorationAndProductionRevenue $ 16,428us-gaap_ExplorationAndProductionRevenue
Derivative instrument losses, net                 284us-gaap_DerivativeGainLossOnDerivativeNet (399)us-gaap_DerivativeGainLossOnDerivativeNet (79)us-gaap_DerivativeGainLossOnDerivativeNet
Other                 (182)us-gaap_OtherSalesRevenueNet 48us-gaap_OtherSalesRevenueNet 215us-gaap_OtherSalesRevenueNet
Total revenues and other 2,952us-gaap_OilAndGasRevenue 3,740us-gaap_OilAndGasRevenue 3,484us-gaap_OilAndGasRevenue 3,675us-gaap_OilAndGasRevenue 3,446us-gaap_OilAndGasRevenue 3,900us-gaap_OilAndGasRevenue 4,268us-gaap_OilAndGasRevenue 3,946us-gaap_OilAndGasRevenue 13,851us-gaap_OilAndGasRevenue 15,560us-gaap_OilAndGasRevenue 16,564us-gaap_OilAndGasRevenue
OPERATING EXPENSES:                      
Depreciation, depletion, and amortization                 10,158us-gaap_DepreciationDepletionAndAmortization 6,289us-gaap_DepreciationDepletionAndAmortization 6,881us-gaap_DepreciationDepletionAndAmortization
Asset retirement obligation accretion                 181us-gaap_AssetRetirementObligationAccretionExpense 238us-gaap_AssetRetirementObligationAccretionExpense 228us-gaap_AssetRetirementObligationAccretionExpense
Lease operating expenses                 2,479us-gaap_LeaseOperatingExpense 2,864us-gaap_LeaseOperatingExpense 2,784us-gaap_LeaseOperatingExpense
Gathering and transportation                 273us-gaap_GasGatheringTransportationMarketingAndProcessingCosts 288us-gaap_GasGatheringTransportationMarketingAndProcessingCosts 295us-gaap_GasGatheringTransportationMarketingAndProcessingCosts
Taxes other than income                 678us-gaap_TaxesOther 785us-gaap_TaxesOther 818us-gaap_TaxesOther
Impairments 2,400us-gaap_AssetImpairmentCharges               2,357us-gaap_AssetImpairmentCharges 0us-gaap_AssetImpairmentCharges 0us-gaap_AssetImpairmentCharges
General and administrative                 434us-gaap_GeneralAndAdministrativeExpense 482us-gaap_GeneralAndAdministrativeExpense 515us-gaap_GeneralAndAdministrativeExpense
Acquisition, divestiture, and separation costs                 67us-gaap_BusinessCombinationAcquisitionRelatedCosts 33us-gaap_BusinessCombinationAcquisitionRelatedCosts 31us-gaap_BusinessCombinationAcquisitionRelatedCosts
Financing costs, net                 130us-gaap_InterestIncomeExpenseAfterProvisionForLoanLoss 177us-gaap_InterestIncomeExpenseAfterProvisionForLoanLoss 172us-gaap_InterestIncomeExpenseAfterProvisionForLoanLoss
Total operating expenses 7,718us-gaap_CostsAndExpenses 4,981us-gaap_CostsAndExpenses 2,871us-gaap_CostsAndExpenses 2,824us-gaap_CostsAndExpenses 3,217us-gaap_CostsAndExpenses 3,464us-gaap_CostsAndExpenses 3,231us-gaap_CostsAndExpenses 3,168us-gaap_CostsAndExpenses 16,757us-gaap_CostsAndExpenses 11,156us-gaap_CostsAndExpenses 11,724us-gaap_CostsAndExpenses
NET INCOME (LOSS) FROM CONTINUING OPERATIONS BEFORE INCOME TAXES                 (2,906)us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments 4,404us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments 4,840us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments
Provision (benefit) for income taxes                 1,637us-gaap_IncomeTaxExpenseBenefit 1,924us-gaap_IncomeTaxExpenseBenefit 2,853us-gaap_IncomeTaxExpenseBenefit
NET INCOME (LOSS) FROM CONTINUING OPERATIONS INCLUDING NONCONTROLLING INTEREST (4,766)us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest (1,241)us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest 613us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest 851us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest 229us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest 436us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest 1,037us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest 778us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest (4,543)us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest 2,480us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest 1,987us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest
Net income (loss) from discontinued operations, net of tax       (517)us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax 1us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax (130)us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax (2)us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax (61)us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax (517)us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax (192)us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax 14us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax
NET INCOME (LOSS) INCLUDING NONCONTROLLING INTEREST (4,766)us-gaap_ProfitLoss (1,241)us-gaap_ProfitLoss 613us-gaap_ProfitLoss 334us-gaap_ProfitLoss 230us-gaap_ProfitLoss 306us-gaap_ProfitLoss 1,035us-gaap_ProfitLoss 717us-gaap_ProfitLoss (5,060)us-gaap_ProfitLoss 2,288us-gaap_ProfitLoss 2,001us-gaap_ProfitLoss
Preferred stock dividends                   44us-gaap_DividendsPreferredStockStock 76us-gaap_DividendsPreferredStockStock
Net income attributable to noncontrolling interest                 343us-gaap_NetIncomeLossAttributableToNoncontrollingInterest 56us-gaap_NetIncomeLossAttributableToNoncontrollingInterest  
Net income (loss) attributable to common shareholders (4,814)us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic (1,330)us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic 505us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic 236us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic 174us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic 300us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic 1,016us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic 698us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic (5,403)us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic 2,188us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic 1,925us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic
COMPREHENSIVE INCOME (LOSS) ATTRIBUTABLE TO COMMON STOCK                 (5,404)apa_ComprehensiveIncomeNetOfTaxAttributableToCommonStock 2,204apa_ComprehensiveIncomeNetOfTaxAttributableToCommonStock 1,803apa_ComprehensiveIncomeNetOfTaxAttributableToCommonStock
Reclassifications & Eliminations [Member]                      
REVENUES AND OTHER:                      
Equity in net income (loss) of affiliates                 111us-gaap_IncomeLossFromEquityMethodInvestments
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ConsolidationEliminationsMember
(2,366)us-gaap_IncomeLossFromEquityMethodInvestments
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ConsolidationEliminationsMember
(1,034)us-gaap_IncomeLossFromEquityMethodInvestments
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ConsolidationEliminationsMember
Other                 5us-gaap_OtherSalesRevenueNet
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ConsolidationEliminationsMember
(4)us-gaap_OtherSalesRevenueNet
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ConsolidationEliminationsMember
(4)us-gaap_OtherSalesRevenueNet
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ConsolidationEliminationsMember
Total revenues and other                 116us-gaap_OilAndGasRevenue
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ConsolidationEliminationsMember
(2,370)us-gaap_OilAndGasRevenue
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ConsolidationEliminationsMember
(1,038)us-gaap_OilAndGasRevenue
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ConsolidationEliminationsMember
OPERATING EXPENSES:                      
General and administrative                 5us-gaap_GeneralAndAdministrativeExpense
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ConsolidationEliminationsMember
(4)us-gaap_GeneralAndAdministrativeExpense
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ConsolidationEliminationsMember
(4)us-gaap_GeneralAndAdministrativeExpense
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ConsolidationEliminationsMember
Total operating expenses                 5us-gaap_CostsAndExpenses
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ConsolidationEliminationsMember
(4)us-gaap_CostsAndExpenses
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ConsolidationEliminationsMember
(4)us-gaap_CostsAndExpenses
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ConsolidationEliminationsMember
NET INCOME (LOSS) FROM CONTINUING OPERATIONS BEFORE INCOME TAXES                 111us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ConsolidationEliminationsMember
(2,366)us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ConsolidationEliminationsMember
(1,034)us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ConsolidationEliminationsMember
NET INCOME (LOSS) FROM CONTINUING OPERATIONS INCLUDING NONCONTROLLING INTEREST                 111us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ConsolidationEliminationsMember
(2,366)us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ConsolidationEliminationsMember
(1,034)us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ConsolidationEliminationsMember
NET INCOME (LOSS) INCLUDING NONCONTROLLING INTEREST                 111us-gaap_ProfitLoss
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ConsolidationEliminationsMember
(2,366)us-gaap_ProfitLoss
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ConsolidationEliminationsMember
(1,034)us-gaap_ProfitLoss
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ConsolidationEliminationsMember
Net income (loss) attributable to common shareholders                 111us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ConsolidationEliminationsMember
(2,366)us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ConsolidationEliminationsMember
(1,034)us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ConsolidationEliminationsMember
COMPREHENSIVE INCOME (LOSS) ATTRIBUTABLE TO COMMON STOCK                 111apa_ComprehensiveIncomeNetOfTaxAttributableToCommonStock
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ConsolidationEliminationsMember
(2,366)apa_ComprehensiveIncomeNetOfTaxAttributableToCommonStock
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ConsolidationEliminationsMember
(1,034)apa_ComprehensiveIncomeNetOfTaxAttributableToCommonStock
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ConsolidationEliminationsMember
Apache Corporation [Member]                      
REVENUES AND OTHER:                      
Oil and gas production revenues                 3,399us-gaap_ExplorationAndProductionRevenue
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
4,585us-gaap_ExplorationAndProductionRevenue
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
4,237us-gaap_ExplorationAndProductionRevenue
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
Equity in net income (loss) of affiliates                 25us-gaap_IncomeLossFromEquityMethodInvestments
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
2,313us-gaap_IncomeLossFromEquityMethodInvestments
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
1,523us-gaap_IncomeLossFromEquityMethodInvestments
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
Derivative instrument losses, net                 141us-gaap_DerivativeGainLossOnDerivativeNet
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
(399)us-gaap_DerivativeGainLossOnDerivativeNet
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
 
Other                 54us-gaap_OtherSalesRevenueNet
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
  (80)us-gaap_OtherSalesRevenueNet
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
Total revenues and other                 3,619us-gaap_OilAndGasRevenue
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
6,499us-gaap_OilAndGasRevenue
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
5,680us-gaap_OilAndGasRevenue
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
OPERATING EXPENSES:                      
Depreciation, depletion, and amortization                 5,845us-gaap_DepreciationDepletionAndAmortization
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
2,250us-gaap_DepreciationDepletionAndAmortization
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
1,391us-gaap_DepreciationDepletionAndAmortization
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
Asset retirement obligation accretion                 31us-gaap_AssetRetirementObligationAccretionExpense
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
67us-gaap_AssetRetirementObligationAccretionExpense
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
76us-gaap_AssetRetirementObligationAccretionExpense
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
Lease operating expenses                 509us-gaap_LeaseOperatingExpense
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
939us-gaap_LeaseOperatingExpense
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
957us-gaap_LeaseOperatingExpense
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
Gathering and transportation                 58us-gaap_GasGatheringTransportationMarketingAndProcessingCosts
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
61us-gaap_GasGatheringTransportationMarketingAndProcessingCosts
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
51us-gaap_GasGatheringTransportationMarketingAndProcessingCosts
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
Taxes other than income                 206us-gaap_TaxesOther
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
190us-gaap_TaxesOther
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
185us-gaap_TaxesOther
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
Impairments                 175us-gaap_AssetImpairmentCharges
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
   
General and administrative                 377us-gaap_GeneralAndAdministrativeExpense
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
408us-gaap_GeneralAndAdministrativeExpense
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
425us-gaap_GeneralAndAdministrativeExpense
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
Acquisition, divestiture, and separation costs                 67us-gaap_BusinessCombinationAcquisitionRelatedCosts
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
33us-gaap_BusinessCombinationAcquisitionRelatedCosts
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
25us-gaap_BusinessCombinationAcquisitionRelatedCosts
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
Financing costs, net                 158us-gaap_InterestIncomeExpenseAfterProvisionForLoanLoss
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
97us-gaap_InterestIncomeExpenseAfterProvisionForLoanLoss
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
94us-gaap_InterestIncomeExpenseAfterProvisionForLoanLoss
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
Total operating expenses                 7,426us-gaap_CostsAndExpenses
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
4,045us-gaap_CostsAndExpenses
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
3,204us-gaap_CostsAndExpenses
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
NET INCOME (LOSS) FROM CONTINUING OPERATIONS BEFORE INCOME TAXES                 (3,807)us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
2,454us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
2,476us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
Provision (benefit) for income taxes                 1,472us-gaap_IncomeTaxExpenseBenefit
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
222us-gaap_IncomeTaxExpenseBenefit
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
475us-gaap_IncomeTaxExpenseBenefit
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
NET INCOME (LOSS) FROM CONTINUING OPERATIONS INCLUDING NONCONTROLLING INTEREST                 (5,279)us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
2,232us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
2,001us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
Net income (loss) from discontinued operations, net of tax                 (127)us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
   
NET INCOME (LOSS) INCLUDING NONCONTROLLING INTEREST                 (5,406)us-gaap_ProfitLoss
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
2,232us-gaap_ProfitLoss
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
2,001us-gaap_ProfitLoss
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
Preferred stock dividends                   44us-gaap_DividendsPreferredStockStock
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
76us-gaap_DividendsPreferredStockStock
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
Net income (loss) attributable to common shareholders                 (5,406)us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
2,188us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
1,925us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
COMPREHENSIVE INCOME (LOSS) ATTRIBUTABLE TO COMMON STOCK                 (5,407)apa_ComprehensiveIncomeNetOfTaxAttributableToCommonStock
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
2,204apa_ComprehensiveIncomeNetOfTaxAttributableToCommonStock
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
1,803apa_ComprehensiveIncomeNetOfTaxAttributableToCommonStock
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
Apache Finance Canada [Member]                      
REVENUES AND OTHER:                      
Equity in net income (loss) of affiliates                 (209)us-gaap_IncomeLossFromEquityMethodInvestments
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
17us-gaap_IncomeLossFromEquityMethodInvestments
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
(737)us-gaap_IncomeLossFromEquityMethodInvestments
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
Other                 55us-gaap_OtherSalesRevenueNet
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
61us-gaap_OtherSalesRevenueNet
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
69us-gaap_OtherSalesRevenueNet
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
Total revenues and other                 (154)us-gaap_OilAndGasRevenue
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
78us-gaap_OilAndGasRevenue
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
(668)us-gaap_OilAndGasRevenue
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
OPERATING EXPENSES:                      
Financing costs, net                 (24)us-gaap_InterestIncomeExpenseAfterProvisionForLoanLoss
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
5us-gaap_InterestIncomeExpenseAfterProvisionForLoanLoss
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
(20)us-gaap_InterestIncomeExpenseAfterProvisionForLoanLoss
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
Total operating expenses                 (24)us-gaap_CostsAndExpenses
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
5us-gaap_CostsAndExpenses
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
(20)us-gaap_CostsAndExpenses
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
NET INCOME (LOSS) FROM CONTINUING OPERATIONS BEFORE INCOME TAXES                 (130)us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
73us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
(648)us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
Provision (benefit) for income taxes                 6us-gaap_IncomeTaxExpenseBenefit
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
20us-gaap_IncomeTaxExpenseBenefit
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
(159)us-gaap_IncomeTaxExpenseBenefit
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
NET INCOME (LOSS) FROM CONTINUING OPERATIONS INCLUDING NONCONTROLLING INTEREST                 (136)us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
53us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
(489)us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
NET INCOME (LOSS) INCLUDING NONCONTROLLING INTEREST                 (136)us-gaap_ProfitLoss
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
53us-gaap_ProfitLoss
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
(489)us-gaap_ProfitLoss
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
Net income (loss) attributable to common shareholders                 (136)us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
53us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
(489)us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
COMPREHENSIVE INCOME (LOSS) ATTRIBUTABLE TO COMMON STOCK                 (136)apa_ComprehensiveIncomeNetOfTaxAttributableToCommonStock
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
53apa_ComprehensiveIncomeNetOfTaxAttributableToCommonStock
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
(489)apa_ComprehensiveIncomeNetOfTaxAttributableToCommonStock
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
All Other Subsidiaries of Apache Corporation [Member]                      
REVENUES AND OTHER:                      
Oil and gas production revenues                 10,350us-gaap_ExplorationAndProductionRevenue
/ dei_LegalEntityAxis
= apa_AllOtherSubsidiariesMember
11,326us-gaap_ExplorationAndProductionRevenue
/ dei_LegalEntityAxis
= apa_AllOtherSubsidiariesMember
12,191us-gaap_ExplorationAndProductionRevenue
/ dei_LegalEntityAxis
= apa_AllOtherSubsidiariesMember
Equity in net income (loss) of affiliates                 73us-gaap_IncomeLossFromEquityMethodInvestments
/ dei_LegalEntityAxis
= apa_AllOtherSubsidiariesMember
36us-gaap_IncomeLossFromEquityMethodInvestments
/ dei_LegalEntityAxis
= apa_AllOtherSubsidiariesMember
248us-gaap_IncomeLossFromEquityMethodInvestments
/ dei_LegalEntityAxis
= apa_AllOtherSubsidiariesMember
Derivative instrument losses, net                 143us-gaap_DerivativeGainLossOnDerivativeNet
/ dei_LegalEntityAxis
= apa_AllOtherSubsidiariesMember
   
Other                 (296)us-gaap_OtherSalesRevenueNet
/ dei_LegalEntityAxis
= apa_AllOtherSubsidiariesMember
(9)us-gaap_OtherSalesRevenueNet
/ dei_LegalEntityAxis
= apa_AllOtherSubsidiariesMember
151us-gaap_OtherSalesRevenueNet
/ dei_LegalEntityAxis
= apa_AllOtherSubsidiariesMember
Total revenues and other                 10,270us-gaap_OilAndGasRevenue
/ dei_LegalEntityAxis
= apa_AllOtherSubsidiariesMember
11,353us-gaap_OilAndGasRevenue
/ dei_LegalEntityAxis
= apa_AllOtherSubsidiariesMember
12,590us-gaap_OilAndGasRevenue
/ dei_LegalEntityAxis
= apa_AllOtherSubsidiariesMember
OPERATING EXPENSES:                      
Depreciation, depletion, and amortization                 4,313us-gaap_DepreciationDepletionAndAmortization
/ dei_LegalEntityAxis
= apa_AllOtherSubsidiariesMember
4,039us-gaap_DepreciationDepletionAndAmortization
/ dei_LegalEntityAxis
= apa_AllOtherSubsidiariesMember
5,490us-gaap_DepreciationDepletionAndAmortization
/ dei_LegalEntityAxis
= apa_AllOtherSubsidiariesMember
Asset retirement obligation accretion                 150us-gaap_AssetRetirementObligationAccretionExpense
/ dei_LegalEntityAxis
= apa_AllOtherSubsidiariesMember
171us-gaap_AssetRetirementObligationAccretionExpense
/ dei_LegalEntityAxis
= apa_AllOtherSubsidiariesMember
152us-gaap_AssetRetirementObligationAccretionExpense
/ dei_LegalEntityAxis
= apa_AllOtherSubsidiariesMember
Lease operating expenses                 1,970us-gaap_LeaseOperatingExpense
/ dei_LegalEntityAxis
= apa_AllOtherSubsidiariesMember
1,925us-gaap_LeaseOperatingExpense
/ dei_LegalEntityAxis
= apa_AllOtherSubsidiariesMember
1,827us-gaap_LeaseOperatingExpense
/ dei_LegalEntityAxis
= apa_AllOtherSubsidiariesMember
Gathering and transportation                 215us-gaap_GasGatheringTransportationMarketingAndProcessingCosts
/ dei_LegalEntityAxis
= apa_AllOtherSubsidiariesMember
227us-gaap_GasGatheringTransportationMarketingAndProcessingCosts
/ dei_LegalEntityAxis
= apa_AllOtherSubsidiariesMember
244us-gaap_GasGatheringTransportationMarketingAndProcessingCosts
/ dei_LegalEntityAxis
= apa_AllOtherSubsidiariesMember
Taxes other than income                 472us-gaap_TaxesOther
/ dei_LegalEntityAxis
= apa_AllOtherSubsidiariesMember
595us-gaap_TaxesOther
/ dei_LegalEntityAxis
= apa_AllOtherSubsidiariesMember
633us-gaap_TaxesOther
/ dei_LegalEntityAxis
= apa_AllOtherSubsidiariesMember
Impairments                 2,182us-gaap_AssetImpairmentCharges
/ dei_LegalEntityAxis
= apa_AllOtherSubsidiariesMember
   
General and administrative                 52us-gaap_GeneralAndAdministrativeExpense
/ dei_LegalEntityAxis
= apa_AllOtherSubsidiariesMember
78us-gaap_GeneralAndAdministrativeExpense
/ dei_LegalEntityAxis
= apa_AllOtherSubsidiariesMember
94us-gaap_GeneralAndAdministrativeExpense
/ dei_LegalEntityAxis
= apa_AllOtherSubsidiariesMember
Acquisition, divestiture, and separation costs                     6us-gaap_BusinessCombinationAcquisitionRelatedCosts
/ dei_LegalEntityAxis
= apa_AllOtherSubsidiariesMember
Financing costs, net                 (4)us-gaap_InterestIncomeExpenseAfterProvisionForLoanLoss
/ dei_LegalEntityAxis
= apa_AllOtherSubsidiariesMember
75us-gaap_InterestIncomeExpenseAfterProvisionForLoanLoss
/ dei_LegalEntityAxis
= apa_AllOtherSubsidiariesMember
98us-gaap_InterestIncomeExpenseAfterProvisionForLoanLoss
/ dei_LegalEntityAxis
= apa_AllOtherSubsidiariesMember
Total operating expenses                 9,350us-gaap_CostsAndExpenses
/ dei_LegalEntityAxis
= apa_AllOtherSubsidiariesMember
7,110us-gaap_CostsAndExpenses
/ dei_LegalEntityAxis
= apa_AllOtherSubsidiariesMember
8,544us-gaap_CostsAndExpenses
/ dei_LegalEntityAxis
= apa_AllOtherSubsidiariesMember
NET INCOME (LOSS) FROM CONTINUING OPERATIONS BEFORE INCOME TAXES                 920us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments
/ dei_LegalEntityAxis
= apa_AllOtherSubsidiariesMember
4,243us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments
/ dei_LegalEntityAxis
= apa_AllOtherSubsidiariesMember
4,046us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments
/ dei_LegalEntityAxis
= apa_AllOtherSubsidiariesMember
Provision (benefit) for income taxes                 159us-gaap_IncomeTaxExpenseBenefit
/ dei_LegalEntityAxis
= apa_AllOtherSubsidiariesMember
1,682us-gaap_IncomeTaxExpenseBenefit
/ dei_LegalEntityAxis
= apa_AllOtherSubsidiariesMember
2,537us-gaap_IncomeTaxExpenseBenefit
/ dei_LegalEntityAxis
= apa_AllOtherSubsidiariesMember
NET INCOME (LOSS) FROM CONTINUING OPERATIONS INCLUDING NONCONTROLLING INTEREST                 761us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest
/ dei_LegalEntityAxis
= apa_AllOtherSubsidiariesMember
2,561us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest
/ dei_LegalEntityAxis
= apa_AllOtherSubsidiariesMember
1,509us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest
/ dei_LegalEntityAxis
= apa_AllOtherSubsidiariesMember
Net income (loss) from discontinued operations, net of tax                 (390)us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax
/ dei_LegalEntityAxis
= apa_AllOtherSubsidiariesMember
(192)us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax
/ dei_LegalEntityAxis
= apa_AllOtherSubsidiariesMember
14us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax
/ dei_LegalEntityAxis
= apa_AllOtherSubsidiariesMember
NET INCOME (LOSS) INCLUDING NONCONTROLLING INTEREST                 371us-gaap_ProfitLoss
/ dei_LegalEntityAxis
= apa_AllOtherSubsidiariesMember
2,369us-gaap_ProfitLoss
/ dei_LegalEntityAxis
= apa_AllOtherSubsidiariesMember
1,523us-gaap_ProfitLoss
/ dei_LegalEntityAxis
= apa_AllOtherSubsidiariesMember
Net income attributable to noncontrolling interest                 343us-gaap_NetIncomeLossAttributableToNoncontrollingInterest
/ dei_LegalEntityAxis
= apa_AllOtherSubsidiariesMember
56us-gaap_NetIncomeLossAttributableToNoncontrollingInterest
/ dei_LegalEntityAxis
= apa_AllOtherSubsidiariesMember
 
Net income (loss) attributable to common shareholders                 28us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic
/ dei_LegalEntityAxis
= apa_AllOtherSubsidiariesMember
2,313us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic
/ dei_LegalEntityAxis
= apa_AllOtherSubsidiariesMember
1,523us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic
/ dei_LegalEntityAxis
= apa_AllOtherSubsidiariesMember
COMPREHENSIVE INCOME (LOSS) ATTRIBUTABLE TO COMMON STOCK                 $ 28apa_ComprehensiveIncomeNetOfTaxAttributableToCommonStock
/ dei_LegalEntityAxis
= apa_AllOtherSubsidiariesMember
$ 2,313apa_ComprehensiveIncomeNetOfTaxAttributableToCommonStock
/ dei_LegalEntityAxis
= apa_AllOtherSubsidiariesMember
$ 1,523apa_ComprehensiveIncomeNetOfTaxAttributableToCommonStock
/ dei_LegalEntityAxis
= apa_AllOtherSubsidiariesMember