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ACQUISITIONS AND DIVESTITURES - 2017 Activity (Detail) - USD ($)
$ in Millions
1 Months Ended 3 Months Ended 12 Months Ended
Jun. 30, 2017
Aug. 31, 2017
Sep. 30, 2017
Jun. 30, 2017
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Business Acquisition [Line Items]              
Currency translation losses recorded in Accumulated Other Comprehensive Loss         $ 0 $ 109 $ 109
Refundable deposits         0 174  
Proceeds from sale of oil and gas properties         758 134 268
Gain (loss) on sale of oil and gas properties           21 135
Leasehold and property acquisitions amount         178 181 367
Transaction, reorganization, and separation         16 39 132
Permian And Midcontinent/Gulf Coast Regions              
Business Acquisition [Line Items]              
Proceeds from sale of certain non-core assets         798    
Refundable deposits for sale of non-core assets           $ 40  
Gain on sale of non-core assets         599    
North Sea              
Business Acquisition [Line Items]              
Gain (loss) on sale of oil and gas properties         6    
North Sea | Scottish Area Gas Evacuation System              
Business Acquisition [Line Items]              
Equity ownership percentage           30.28%  
Refundable deposits           $ 134  
North Sea | Beryl Pipeline              
Business Acquisition [Line Items]              
Equity ownership percentage           60.56%  
North America Onshore Regions              
Business Acquisition [Line Items]              
Leasehold and property acquisitions amount         188 $ 181 367
Disposed of by sale | Apache Canada Ltd. (ACL)              
Business Acquisition [Line Items]              
Proceeds from divestiture $ 228 $ 478          
Gain (loss) recognized on sale     $ 74 $ (52)      
Currency translation losses recorded in Accumulated Other Comprehensive Loss           109  
Pretax losses from discontinued operations         $ 141 $ 684 $ 2,000