REVENUE - Schedule of Revenue from Customers by Segment, Product, and Geographical Area (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Disaggregation of revenue
Revenue from customers	$ 7,115	$ 8,213
United States
Disaggregation of revenue
Revenue from customers	6,297	7,453
International
Disaggregation of revenue
Revenue from customers	1,074	1,052
Eliminations
Disaggregation of revenue
Revenue from customers	(256)	(292)
Eliminations | United States
Disaggregation of revenue
Revenue from customers	0	0
Eliminations | International
Disaggregation of revenue
Revenue from customers	0	0
Oil and gas
Disaggregation of revenue
Revenue from customers	5,325	6,075
Oil and gas | Oil
Disaggregation of revenue
Revenue from customers	4,368	4,799
Oil and gas | NGL
Disaggregation of revenue
Revenue from customers	545	760
Oil and gas | Gas
Disaggregation of revenue
Revenue from customers	427	513
Oil and gas | Other
Disaggregation of revenue
Revenue from customers	(15)	3
Oil and gas | United States
Disaggregation of revenue
Revenue from customers	4,449	5,203
Oil and gas | United States | Oil
Disaggregation of revenue
Revenue from customers	3,650	4,048
Oil and gas | United States | NGL
Disaggregation of revenue
Revenue from customers	460	698
Oil and gas | United States | Gas
Disaggregation of revenue
Revenue from customers	355	455
Oil and gas | United States | Other
Disaggregation of revenue
Revenue from customers	(16)	2
Oil and gas | International
Disaggregation of revenue
Revenue from customers	876	872
Oil and gas | International | Oil
Disaggregation of revenue
Revenue from customers	718	751
Oil and gas | International | NGL
Disaggregation of revenue
Revenue from customers	85	62
Oil and gas | International | Gas
Disaggregation of revenue
Revenue from customers	72	58
Oil and gas | International | Other
Disaggregation of revenue
Revenue from customers	1	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
Disaggregation of revenue
Revenue from customers	1,402	1,683
Chemical | United States
Disaggregation of revenue
Revenue from customers	1,308	1,602
Chemical | International
Disaggregation of revenue
Revenue from customers	94	81
Chemical | Eliminations
Disaggregation of revenue
Revenue from customers	0	0
Midstream and marketing
Disaggregation of revenue
Revenue from customers	644	747
Midstream and marketing | United States
Disaggregation of revenue
Revenue from customers	540	648
Midstream and marketing | International
Disaggregation of revenue
Revenue from customers	104	99
Midstream and marketing | Eliminations
Disaggregation of revenue
Revenue from customers	$ 0	$ 0