REVENUE - Schedule of Revenue from Customers by Segment, Product, and Geographical Area (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Disaggregation of revenue
Revenue from customers	$ 7,271	$ 9,359	$ 20,987	$ 27,923
United States
Disaggregation of revenue
Revenue from customers	6,471	8,252	18,450	24,775
International
Disaggregation of revenue
Revenue from customers	1,097	1,511	3,320	4,247
Eliminations
Disaggregation of revenue
Revenue from customers	(297)	(404)	(783)	(1,099)
Eliminations | United States
Disaggregation of revenue
Revenue from customers	0	0	0	0
Eliminations | International
Disaggregation of revenue
Revenue from customers	0	0	0	0
Oil and gas | Operating segments
Disaggregation of revenue
Revenue from customers	5,594	7,098	15,860	20,869
Oil and gas | Operating segments | Oil
Disaggregation of revenue
Revenue from customers	4,739	5,430	13,348	16,269
Oil and gas | Operating segments | NGL
Disaggregation of revenue
Revenue from customers	510	785	1,497	2,441
Oil and gas | Operating segments | Gas
Disaggregation of revenue
Revenue from customers	308	874	983	2,141
Oil and gas | Operating segments | Other
Disaggregation of revenue
Revenue from customers	37	9	32	18
Oil and gas | Operating segments | United States
Disaggregation of revenue
Revenue from customers	4,674	5,821	13,092	17,381
Oil and gas | Operating segments | United States | Oil
Disaggregation of revenue
Revenue from customers	3,997	4,369	11,093	13,311
Oil and gas | Operating segments | United States | NGL
Disaggregation of revenue
Revenue from customers	419	658	1,231	2,139
Oil and gas | Operating segments | United States | Gas
Disaggregation of revenue
Revenue from customers	221	786	737	1,916
Oil and gas | Operating segments | United States | Other
Disaggregation of revenue
Revenue from customers	37	8	31	15
Oil and gas | Operating segments | International
Disaggregation of revenue
Revenue from customers	920	1,277	2,768	3,488
Oil and gas | Operating segments | International | Oil
Disaggregation of revenue
Revenue from customers	742	1,061	2,255	2,958
Oil and gas | Operating segments | International | NGL
Disaggregation of revenue
Revenue from customers	91	127	266	302
Oil and gas | Operating segments | International | Gas
Disaggregation of revenue
Revenue from customers	87	88	246	225
Oil and gas | Operating segments | International | Other
Disaggregation of revenue
Revenue from customers	0	1	1	3
Oil and gas | Eliminations
Disaggregation of revenue
Revenue from customers	0	0	0	0
Oil and gas | Eliminations | Oil
Disaggregation of revenue
Revenue from customers	0	0	0	0
Oil and gas | Eliminations | NGL
Disaggregation of revenue
Revenue from customers	0	0	0	0
Oil and gas | Eliminations | Gas
Disaggregation of revenue
Revenue from customers	0	0	0	0
Oil and gas | Eliminations | Other
Disaggregation of revenue
Revenue from customers	0	0	0	0
Chemical | Operating segments
Disaggregation of revenue
Revenue from customers	1,308	1,674	4,084	5,265
Chemical | Operating segments | United States
Disaggregation of revenue
Revenue from customers	1,234	1,572	3,834	4,984
Chemical | Operating segments | International
Disaggregation of revenue
Revenue from customers	74	102	250	281
Chemical | Eliminations
Disaggregation of revenue
Revenue from customers	0	0	0	0
Midstream and marketing | Operating segments
Disaggregation of revenue
Revenue from customers	666	991	1,826	2,888
Midstream and marketing | Operating segments | United States
Disaggregation of revenue
Revenue from customers	563	859	1,524	2,410
Midstream and marketing | Operating segments | International
Disaggregation of revenue
Revenue from customers	103	132	302	478
Midstream and marketing | Eliminations
Disaggregation of revenue
Revenue from customers	$ 0	$ 0	$ 0	$ 0