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Income Taxes - Net Deferred Tax Liability (Detail) (USD $)
In Millions, unless otherwise specified
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Deferred tax assets:        
Deferred income   $ 153us-gaap_DeferredTaxAssetsDeferredIncome    
U.S. and state net operating loss carryforwards 1,333apa_DeferredTaxAssetsOperatingLossCarryforwardsFederalAndState 900apa_DeferredTaxAssetsOperatingLossCarryforwardsFederalAndState    
Foreign net operating loss carryforwards 366us-gaap_DeferredTaxAssetsOperatingLossCarryforwardsForeign 156us-gaap_DeferredTaxAssetsOperatingLossCarryforwardsForeign    
Tax credits 42us-gaap_DeferredTaxAssetsTaxCreditCarryforwards 66us-gaap_DeferredTaxAssetsTaxCreditCarryforwards    
Accrued expenses and liabilities 68us-gaap_DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAccruedLiabilities 162us-gaap_DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAccruedLiabilities    
Asset retirement obligation 1,202us-gaap_DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAssetRetirementObligations 1,231us-gaap_DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAssetRetirementObligations    
Total deferred tax assets 3,011us-gaap_DeferredTaxAssetsGross 2,668us-gaap_DeferredTaxAssetsGross    
Valuation allowance (1,069)us-gaap_DeferredTaxAssetsValuationAllowance (651)us-gaap_DeferredTaxAssetsValuationAllowance (419)us-gaap_DeferredTaxAssetsValuationAllowance (60)us-gaap_DeferredTaxAssetsValuationAllowance
Net deferred tax assets 1,942us-gaap_DeferredTaxAssetsNet 2,017us-gaap_DeferredTaxAssetsNet    
Deferred tax liabilities:        
Other 19us-gaap_DeferredTaxLiabilitiesOther 29us-gaap_DeferredTaxLiabilitiesOther    
Deferred income 24us-gaap_DeferredTaxLiabilitiesTaxDeferredIncome      
Investment in foreign subsidiaries 1,654us-gaap_DeferredTaxLiabilityNotRecognizedAmountOfUnrecognizedDeferredTaxLiabilityUndistributedEarningsOfForeignSubsidiaries      
Property and equipment 8,986us-gaap_DeferredTaxLiabilitiesPropertyPlantAndEquipment 10,224us-gaap_DeferredTaxLiabilitiesPropertyPlantAndEquipment    
Total deferred tax liabilities 10,683us-gaap_DeferredTaxLiabilities 10,253us-gaap_DeferredTaxLiabilities    
Net deferred income tax liability $ 8,741us-gaap_DeferredTaxAssetsLiabilitiesNet $ 8,236us-gaap_DeferredTaxAssetsLiabilitiesNet