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CAPITALIZED EXPLORATORY WELL COSTS - Additional Information (Details)
$ in Millions
12 Months Ended
Dec. 31, 2018
USD ($)
Project
Dec. 31, 2019
USD ($)
Project
Dec. 31, 2017
USD ($)
Project
Projects with Exploratory Well Costs Capitalized for More than One Year [Line Items]      
Exploratory well costs capitalized for a period greater than one year $ 33 $ 33 $ 190
Number of projects with exploratory well costs capitalized for a period greater than one year | Project 2 2 4
Exploratory costs of assets divested $ 82    
North Sea      
Projects with Exploratory Well Costs Capitalized for More than One Year [Line Items]      
Exploratory well costs capitalized for a period greater than one year     $ 160
Number of projects with exploratory well costs capitalized for a period greater than one year | Project     3
SURINAME      
Projects with Exploratory Well Costs Capitalized for More than One Year [Line Items]      
Exploratory well costs capitalized for a period greater than one year $ 28    
Total S.A      
Projects with Exploratory Well Costs Capitalized for More than One Year [Line Items]      
Ownership percentage by noncontrolling owners   50.00%