SEGMENT INFORMATION - Schedule of Summarized Financial Information (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023	Dec. 31, 2023
Segment Reporting Information [Line Items]
Total operating revenues	$ 1,083	$ 1,269	$ 2,500	$ 3,387
Depreciation, depletion and amortization expense	226	328	488	641
Impairments	631	0	2,724	0
Operating income (loss)	(709)	(57)	(2,766)	549
Interest expense	37	34	72	70
Loss on derivatives	(35)	317	91	1,718
Gain (loss) on extinguishment of debt	0	0	0	(19)
Other income, net	(3)	0	(2)	(1)
Provision from income taxes	(176)	(5)	(606)	7
Assets	9,850	13,001	9,850	13,001	$ 11,991
Capital investments	430	595	968	1,260
Increase (decrease) in accrued expenditures	(31)	(22)	(17)	(28)
Intersegment Revenues
Segment Reporting Information [Line Items]
Total operating revenues	(616)	(739)	(1,400)	(2,091)
Operating Segments
Segment Reporting Information [Line Items]
Depreciation, depletion and amortization expense	226	328	488	641
Impairments	631		2,724
Operating income (loss)	(709)	(57)	(2,766)	549
Interest expense	37	34	72	70
Loss on derivatives	(35)	317	91	1,718
Gain (loss) on extinguishment of debt				0
Other income, net	(3)		(2)	(1)
Provision from income taxes	(176)	(5)	(606)	7
Assets	9,705	12,851	9,705	12,851
Capital investments	429	593	966	1,257
Corporate, Non-Segment
Segment Reporting Information [Line Items]
Total operating revenues	0	0	0	0
Depreciation, depletion and amortization expense	0	0	0	0
Impairments	0		0
Operating income (loss)	0	0	0	0
Interest expense	0	0	0	0
Loss on derivatives	0	0	0	0
Gain (loss) on extinguishment of debt				(19)
Other income, net	0		0	0
Provision from income taxes	0	0	0	0
Assets	145	150	145	150
Capital investments	1	2	2	3
E&P
Segment Reporting Information [Line Items]
Total operating revenues	659	794	1,497	2,233
E&P | Intersegment Revenues
Segment Reporting Information [Line Items]
Total operating revenues	17	17	31	27
E&P | Operating Segments
Segment Reporting Information [Line Items]
Total operating revenues	642	777	1,466	2,206
Depreciation, depletion and amortization expense	224	326	485	638
Impairments	631		2,724
Operating income (loss)	(715)	(70)	(2,776)	508
Interest expense	37	34	72	70
Loss on derivatives	(35)	317	91	1,718
Gain (loss) on extinguishment of debt				0
Other income, net	(3)		(2)	(1)
Provision from income taxes	(176)	(5)	(606)	7
Assets	9,253	12,413	9,253	12,413
Capital investments	429	593	966	1,257
Marketing
Segment Reporting Information [Line Items]
Total operating revenues	424	475	1,003	1,154
Marketing | Intersegment Revenues
Segment Reporting Information [Line Items]
Total operating revenues	(633)	(756)	(1,431)	(2,118)
Marketing | Operating Segments
Segment Reporting Information [Line Items]
Total operating revenues	1,057	1,231	2,434	3,272
Depreciation, depletion and amortization expense	2	2	3	3
Impairments	0		0
Operating income (loss)	6	13	10	41
Interest expense	0	0	0	0
Loss on derivatives	0	0	0	0
Gain (loss) on extinguishment of debt				0
Other income, net	0		0	0
Provision from income taxes	0	0	0	0
Assets	452	438	452	438
Capital investments	$ 0	$ 0	$ 0	$ 0