REVENUE - Schedule of Revenue from Customers by Segment, Product, and Geographical Area (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2026	Jun. 30, 2025
Disaggregation of revenue
Revenue from customers	$ 7,053	$ 5,163	$ 12,622	$ 10,976
Operating segments
Disaggregation of revenue
Revenue from customers	7,053	5,163	12,622	10,976
Operating segments \| United States
Disaggregation of revenue
Revenue from customers	5,887	4,278	10,513	9,249
Operating segments \| International
Disaggregation of revenue
Revenue from customers	1,309	1,026	2,394	2,020
Eliminations
Disaggregation of revenue
Revenue from customers	(143)	(141)	(285)	(293)
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	6,777	5,009	12,091	10,692
Oil and gas \| Operating segments \| Oil
Disaggregation of revenue
Revenue from customers	6,289	4,146	10,812	8,651
Oil and gas \| Operating segments \| NGL
Disaggregation of revenue
Revenue from customers	681	543	1,199	1,217
Oil and gas \| Operating segments \| Gas
Disaggregation of revenue
Revenue from customers	(169)	293	78	758
Oil and gas \| Operating segments \| Other
Disaggregation of revenue
Revenue from customers	(24)	27	2	66
Oil and gas \| Operating segments \| United States
Disaggregation of revenue
Revenue from customers	5,733	4,144	10,238	8,971
Oil and gas \| Operating segments \| United States \| Oil
Disaggregation of revenue
Revenue from customers	5,417	3,456	9,290	7,286
Oil and gas \| Operating segments \| United States \| NGL
Disaggregation of revenue
Revenue from customers	592	457	1,036	1,035
Oil and gas \| Operating segments \| United States \| Gas
Disaggregation of revenue
Revenue from customers	(250)	205	(86)	586
Oil and gas \| Operating segments \| United States \| Other
Disaggregation of revenue
Revenue from customers	(26)	26	(2)	64
Oil and gas \| Operating segments \| International
Disaggregation of revenue
Revenue from customers	1,044	865	1,853	1,721
Oil and gas \| Operating segments \| International \| Oil
Disaggregation of revenue
Revenue from customers	872	690	1,522	1,365
Oil and gas \| Operating segments \| International \| NGL
Disaggregation of revenue
Revenue from customers	89	86	163	182
Oil and gas \| Operating segments \| International \| Gas
Disaggregation of revenue
Revenue from customers	81	88	164	172
Oil and gas \| Operating segments \| International \| Other
Disaggregation of revenue
Revenue from customers	2	1	4	2
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
Midstream and marketing \| Operating segments
Disaggregation of revenue
Revenue from customers	419	295	816	577
Midstream and marketing \| Operating segments \| United States
Disaggregation of revenue
Revenue from customers	154	134	275	278
Midstream and marketing \| Operating segments \| International
Disaggregation of revenue
Revenue from customers	265	161	541	299
Midstream and marketing \| Eliminations
Disaggregation of revenue
Revenue from customers	$ 0	$ 0	$ 0	$ 0