REVENUE - Schedule of Revenue from Customers by Segment, Product, and Geographical Area (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Disaggregation of revenue
Revenue from customers	$ 6,731	$ 7,115
Operating segments
Disaggregation of revenue
Revenue from customers	6,731	7,115
Operating segments | United States
Disaggregation of revenue
Revenue from customers	5,832	6,297
Operating segments | International
Disaggregation of revenue
Revenue from customers	1,124	1,074
Eliminations
Disaggregation of revenue
Revenue from customers	(225)	(256)
Eliminations | United States
Disaggregation of revenue
Revenue from customers	0	0
Eliminations | International
Disaggregation of revenue
Revenue from customers	0	0
Oil and gas | Operating segments
Disaggregation of revenue
Revenue from customers	4,915	5,325
Oil and gas | Operating segments | Oil
Disaggregation of revenue
Revenue from customers	4,121	4,368
Oil and gas | Operating segments | NGL
Disaggregation of revenue
Revenue from customers	515	545
Oil and gas | Operating segments | Gas
Disaggregation of revenue
Revenue from customers	274	427
Oil and gas | Operating segments | Other
Disaggregation of revenue
Revenue from customers	5	(15)
Oil and gas | Operating segments | United States
Disaggregation of revenue
Revenue from customers	3,957	4,449
Oil and gas | Operating segments | United States | Oil
Disaggregation of revenue
Revenue from customers	3,349	3,650
Oil and gas | Operating segments | United States | NGL
Disaggregation of revenue
Revenue from customers	416	460
Oil and gas | Operating segments | United States | Gas
Disaggregation of revenue
Revenue from customers	187	355
Oil and gas | Operating segments | United States | Other
Disaggregation of revenue
Revenue from customers	5	(16)
Oil and gas | Operating segments | International
Disaggregation of revenue
Revenue from customers	958	876
Oil and gas | Operating segments | International | Oil
Disaggregation of revenue
Revenue from customers	772	718
Oil and gas | Operating segments | International | NGL
Disaggregation of revenue
Revenue from customers	99	85
Oil and gas | Operating segments | International | Gas
Disaggregation of revenue
Revenue from customers	87	72
Oil and gas | Operating segments | International | Other
Disaggregation of revenue
Revenue from customers	0	1
Oil and gas | Eliminations
Disaggregation of revenue
Revenue from customers	0	0
Oil and gas | Eliminations | Oil
Disaggregation of revenue
Revenue from customers	0	0
Oil and gas | Eliminations | NGL
Disaggregation of revenue
Revenue from customers	0	0
Oil and gas | Eliminations | Gas
Disaggregation of revenue
Revenue from customers	0	0
Oil and gas | Eliminations | Other
Disaggregation of revenue
Revenue from customers	0	0
Chemical | Operating segments
Disaggregation of revenue
Revenue from customers	1,185	1,402
Chemical | Operating segments | United States
Disaggregation of revenue
Revenue from customers	1,115	1,308
Chemical | Operating segments | International
Disaggregation of revenue
Revenue from customers	70	94
Chemical | Eliminations
Disaggregation of revenue
Revenue from customers	0	0
Midstream and marketing | Operating segments
Disaggregation of revenue
Revenue from customers	856	644
Midstream and marketing | Operating segments | United States
Disaggregation of revenue
Revenue from customers	760	540
Midstream and marketing | Operating segments | International
Disaggregation of revenue
Revenue from customers	96	104
Midstream and marketing | Eliminations
Disaggregation of revenue
Revenue from customers	$ 0	$ 0