REVENUE - Disaggregation Of Revenue (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	$ 21,569	$ 22,710	$ 23,230
Operating segments
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	21,569	22,710	23,230
Operating segments | United States
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	18,024	19,176	19,616
Operating segments | International
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	4,133	4,106	4,175
Eliminations
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	(588)	(572)	(561)
Eliminations | United States
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	0	0	0
Eliminations | International
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	0	0	0
Oil and gas | Operating segments
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	20,902	21,705	21,284
Oil and gas | Operating segments | Oil
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	17,174	18,544	17,950
Oil and gas | Operating segments | NGL
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	2,249	2,255	1,991
Oil and gas | Operating segments | Gas
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	1,369	875	1,305
Oil and gas | Operating segments | Other
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	110	31	38
Oil and gas | Operating segments | United States
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	17,478	18,012	17,518
Oil and gas | Operating segments | United States | Oil
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	14,459	15,604	14,893
Oil and gas | Operating segments | United States | NGL
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	1,897	1,865	1,619
Oil and gas | Operating segments | United States | Gas
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	1,017	514	970
Oil and gas | Operating segments | United States | Other
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	105	29	36
Oil and gas | Operating segments | International
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	3,424	3,693	3,766
Oil and gas | Operating segments | International | Oil
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	2,715	2,940	3,057
Oil and gas | Operating segments | International | NGL
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	352	390	372
Oil and gas | Operating segments | International | Gas
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	352	361	335
Oil and gas | Operating segments | International | Other
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	5	2	2
Oil and gas | Eliminations
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	0	0	0
Oil and gas | Eliminations | Oil
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	0	0	0
Oil and gas | Eliminations | NGL
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	0	0	0
Oil and gas | Eliminations | Gas
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	0	0	0
Oil and gas | Eliminations | Other
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	0	0	0
Midstream and marketing | Operating segments
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	1,255	1,577	2,507
Midstream and marketing | Operating segments | United States
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	546	1,164	2,098
Midstream and marketing | Operating segments | International
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	709	413	409
Midstream and marketing | Eliminations
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	$ 0	$ 0	$ 0