REVENUE - Schedule of Revenue from Customers by Segment, Product, and Geographical Area (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Disaggregation of revenue
Revenue from customers	$ 6,802	$ 6,601	$ 13,533	$ 13,716
United States
Disaggregation of revenue
Revenue from customers			11,727	11,979
International
Disaggregation of revenue
Revenue from customers			2,239	2,223
Operating segments
Disaggregation of revenue
Revenue from customers	6,802	6,601
Operating segments | United States
Disaggregation of revenue
Revenue from customers	5,895	5,682
Operating segments | International
Disaggregation of revenue
Revenue from customers	1,115	1,149
Eliminations
Disaggregation of revenue
Revenue from customers	(208)	(230)	(433)	(486)
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	5,469	4,941	10,384	10,266
Oil and gas | Operating segments | Oil
Disaggregation of revenue
Revenue from customers	4,772	4,241	8,893	8,609
Oil and gas | Operating segments | NGL
Disaggregation of revenue
Revenue from customers	500	442	1,015	987
Oil and gas | Operating segments | Gas
Disaggregation of revenue
Revenue from customers	158	248	432	675
Oil and gas | Operating segments | Other
Disaggregation of revenue
Revenue from customers	39	10	44	(5)
Oil and gas | Operating segments | United States
Disaggregation of revenue
Revenue from customers	4,520	3,969	8,477	8,418
Oil and gas | Operating segments | United States | Oil
Disaggregation of revenue
Revenue from customers	4,011	3,446	7,360	7,096
Oil and gas | Operating segments | United States | NGL
Disaggregation of revenue
Revenue from customers	403	352	819	812
Oil and gas | Operating segments | United States | Gas
Disaggregation of revenue
Revenue from customers	67	161	254	516
Oil and gas | Operating segments | United States | Other
Disaggregation of revenue
Revenue from customers	39	10	44	(6)
Oil and gas | Operating segments | International
Disaggregation of revenue
Revenue from customers	949	972	1,907	1,848
Oil and gas | Operating segments | International | Oil
Disaggregation of revenue
Revenue from customers	761	795	1,533	1,513
Oil and gas | Operating segments | International | NGL
Disaggregation of revenue
Revenue from customers	97	90	196	175
Oil and gas | Operating segments | International | Gas
Disaggregation of revenue
Revenue from customers	91	87	178	159
Oil and gas | Operating segments | International | Other
Disaggregation of revenue
Revenue from customers	0	0	0	1
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	1,273	1,374	2,458	2,776
Chemical | Operating segments | United States
Disaggregation of revenue
Revenue from customers	1,203	1,292	2,318	2,600
Chemical | Operating segments | International
Disaggregation of revenue
Revenue from customers	70	82	140	176
Chemical | Eliminations
Disaggregation of revenue
Revenue from customers	0	0	0	0
Midstream and marketing | Operating segments
Disaggregation of revenue
Revenue from customers	268	516	1,124	1,160
Midstream and marketing | Operating segments | United States
Disaggregation of revenue
Revenue from customers	172	421	932	961
Midstream and marketing | Operating segments | International
Disaggregation of revenue
Revenue from customers	96	95	192	199
Midstream and marketing | Eliminations
Disaggregation of revenue
Revenue from customers	$ 0	$ 0	$ 0	$ 0