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Other Current Liabilities - Details of Other Current Liabilities (Detail) (USD $)
In Millions, unless otherwise specified
Mar. 31, 2015
Dec. 31, 2014
Payables and Accruals [Abstract]    
Accrued operating expenses $ 137apa_AccruedOperatingExpenses $ 163apa_AccruedOperatingExpenses
Accrued exploration and development 1,194apa_AccruedExplorationAndDevelopment 1,606apa_AccruedExplorationAndDevelopment
Accrued compensation and benefits 127us-gaap_EmployeeRelatedLiabilitiesCurrent 204us-gaap_EmployeeRelatedLiabilitiesCurrent
Accrued interest 118us-gaap_InterestPayableCurrent 160us-gaap_InterestPayableCurrent
Accrued income taxes 27us-gaap_AccruedIncomeTaxesCurrent 54us-gaap_AccruedIncomeTaxesCurrent
Other 235us-gaap_OtherSundryLiabilitiesCurrent 230us-gaap_OtherSundryLiabilitiesCurrent
Total Other current liabilities $ 1,838us-gaap_OtherLiabilitiesCurrent $ 2,417us-gaap_OtherLiabilitiesCurrent