Segment Information - Financial Information by Major Geographic Area (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Segment Reporting Information [Line Items]
Sales and other operating revenues	$ 12,896	$ 10,511	$ 11,324
Property, Plant and Equipment— Net	19,921	17,432
Exploration and Production
Segment Reporting Information [Line Items]
Sales and other operating revenues	12,869	10,500	11,324
Property, Plant and Equipment— Net	7,797	7,325
Midstream
Segment Reporting Information [Line Items]
Sales and other operating revenues	27	11	0
Midstream | Variable Interest Entity
Segment Reporting Information [Line Items]
Property, Plant and Equipment— Net	3,325	3,229
Operating Segments | Exploration and Production
Segment Reporting Information [Line Items]
Sales and other operating revenues	12,869	10,500	11,324
Operating Segments | Midstream
Segment Reporting Information [Line Items]
Sales and other operating revenues	1,495	1,349	1,273
Corporate, Interest and Other
Segment Reporting Information [Line Items]
Sales and other operating revenues	0	0	0
Property, Plant and Equipment— Net	5	7
United States | Operating Segments
Segment Reporting Information [Line Items]
Sales and other operating revenues	6,310	6,092	7,214
Property, Plant and Equipment— Net	11,122	10,554
United States | Operating Segments | Exploration and Production
Segment Reporting Information [Line Items]
Sales and other operating revenues	6,283	6,081	7,214
Guyana | Operating Segments
Segment Reporting Information [Line Items]
Sales and other operating revenues	5,636	3,494	2,636
Property, Plant and Equipment— Net	8,069	5,957
Guyana | Operating Segments | Exploration and Production
Segment Reporting Information [Line Items]
Sales and other operating revenues	5,636	3,494	2,636
Malaysia and JDA | Operating Segments
Segment Reporting Information [Line Items]
Sales and other operating revenues	950	925	873
Property, Plant and Equipment— Net	684	872
Malaysia and JDA | Operating Segments | Exploration and Production
Segment Reporting Information [Line Items]
Sales and other operating revenues	950	925	873
Other | Operating Segments
Segment Reporting Information [Line Items]
Sales and other operating revenues	0	0	601
Property, Plant and Equipment— Net	41	42
Other | Operating Segments | Exploration and Production
Segment Reporting Information [Line Items]
Sales and other operating revenues	$ 0	$ 0	$ 601