ACQUISITIONS AND DIVESTITURES (Details) - USD ($)	1 Months Ended	3 Months Ended
	Dec. 31, 2019	Mar. 31, 2020	Mar. 31, 2019
Business Acquisition [Line Items]
Leasehold and property acquisitions		$ 1,000,000	$ 15,000,000
Proceeds from sale of oil and gas properties		126,000,000	9,000,000
Disposed of by Sale
Business Acquisition [Line Items]
Gain (loss) on sale of non-core assets		6,000,000
Block 58 Offshore Suriname
Business Acquisition [Line Items]
Ownership percentage by noncontrolling owners	50.00%
Proceeds received from joint venture	$ 100,000,000
Proceeds from joint venture agreement, for reimbursement of cost incurred	$ 79,000,000
Joint venture agreement, percentage of costs incurred for reimbursement	50.00%
Proceeds expected to receive from joint venture	$ 5,000,000,000
Joint venture agreement, future consideration term, appraisal and development capital cap	$ 7,500,000,000
Joint venture agreement, percentage of consideration carried on appraisal and development capital	25.00%
Joint venture agreement, additional cash payment to receive upon achieving of first production	$ 75,000,000
U.S. Onshore Regions
Business Acquisition [Line Items]
Leasehold and property acquisitions		1,000,000	15,000,000
Permian Basin | Disposed of by Sale
Business Acquisition [Line Items]
Proceeds from sale of oil and gas properties		45,000,000	9,000,000
Gain (loss) on sale of non-core assets			$ 3,000,000
Oklahoma | Disposed of by Sale
Business Acquisition [Line Items]
Gain (loss) on sale of non-core assets		$ 19,000,000