Segment Information - Financial Information by Major Geographic Area (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Segment Reporting Information [Line Items]
Sales and other operating revenues	$ 10,511	$ 11,324	$ 7,473
Property, Plant and Equipment— Net	17,432	15,098
Exploration and Production
Segment Reporting Information [Line Items]
Sales and other operating revenues	10,500	11,324	7,473
Property, Plant and Equipment— Net	7,325	6,764
Midstream
Segment Reporting Information [Line Items]
Sales and other operating revenues	11	0	0
Midstream | Variable Interest Entity
Segment Reporting Information [Line Items]
Property, Plant and Equipment— Net	3,229	3,173
Operating Segments | Exploration and Production
Segment Reporting Information [Line Items]
Sales and other operating revenues	10,500	11,324	7,473
Operating Segments | Midstream
Segment Reporting Information [Line Items]
Sales and other operating revenues	1,349	1,273	1,204
Corporate, Interest and Other
Segment Reporting Information [Line Items]
Sales and other operating revenues	0	0	0
Property, Plant and Equipment— Net	7	8
United States | Operating Segments
Segment Reporting Information [Line Items]
Sales and other operating revenues	6,092	7,214	5,378
Property, Plant and Equipment— Net	10,554	9,937
United States | Operating Segments | Exploration and Production
Segment Reporting Information [Line Items]
Sales and other operating revenues	6,081	7,214	5,378
Guyana | Operating Segments
Segment Reporting Information [Line Items]
Sales and other operating revenues	3,494	2,636	754
Property, Plant and Equipment— Net	5,957	4,042
Guyana | Operating Segments | Exploration and Production
Segment Reporting Information [Line Items]
Sales and other operating revenues	3,494	2,636	754
Malaysia and JDA | Operating Segments
Segment Reporting Information [Line Items]
Sales and other operating revenues	925	873	738
Property, Plant and Equipment— Net	872	1,065
Malaysia and JDA | Operating Segments | Exploration and Production
Segment Reporting Information [Line Items]
Sales and other operating revenues	925	873	738
Other | Operating Segments
Segment Reporting Information [Line Items]
Sales and other operating revenues	0	601	603
Property, Plant and Equipment— Net	42	46
Other | Operating Segments | Exploration and Production
Segment Reporting Information [Line Items]
Sales and other operating revenues	$ 0	$ 601	$ 603