Revenue - Summary of Revenue from Contracts with Customers on a Disaggregated Basis (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax			$ 7,683,000,000
Revenue from both contract with customer and not from contract with customer, excluding assessed tax	$ 10,667,000,000	$ 11,865,000,000
Other operating revenues	(156,000,000)	(541,000,000)	(210,000,000)
Total sales and other operating revenues	10,511,000,000	11,324,000,000	7,473,000,000
Gain (loss) on commodity derivatives	$ (190,000,000)	$ (585,000,000)	$ (243,000,000)
Derivative, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]	Total sales and other operating revenues	Total sales and other operating revenues	Total sales and other operating revenues
Crude Oil Revenue
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax			$ 4,325,000,000
Revenue from both contract with customer and not from contract with customer, excluding assessed tax	$ 6,688,000,000	$ 6,821,000,000
Natural Gas Liquids Revenue
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax	529,000,000	703,000,000	594,000,000
Natural Gas Revenue
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax	982,000,000	1,198,000,000	1,015,000,000
Sales of Purchased Oil and Gas
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax	2,460,000,000	3,143,000,000	1,749,000,000
Third-Party Services
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax	8,000,000
Guyana | Crude Oil Revenue
Disaggregation of Revenue [Line Items]
Revenue not from contracts with customer	433,000,000	230,000,000	0
Exploration and Production
Disaggregation of Revenue [Line Items]
Total sales and other operating revenues	10,500,000,000	11,324,000,000	7,473,000,000
Exploration and Production | Crude Oil Revenue
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax			4,325,000,000
Revenue from both contract with customer and not from contract with customer, excluding assessed tax	6,688,000,000	6,821,000,000
Exploration and Production | Natural Gas Liquids Revenue
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax	529,000,000	703,000,000	594,000,000
Exploration and Production | Natural Gas Revenue
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax	982,000,000	1,198,000,000	1,015,000,000
Exploration and Production | Sales of Purchased Oil and Gas
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax	2,460,000,000	3,143,000,000	1,749,000,000
Exploration and Production | Third-Party Services
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax	0
Exploration and Production | United States | Crude Oil Revenue
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax	3,058,000,000	3,407,000,000	2,958,000,000
Exploration and Production | United States | Natural Gas Liquids Revenue
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax	529,000,000	703,000,000	594,000,000
Exploration and Production | United States | Natural Gas Revenue
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax	182,000,000	438,000,000	350,000,000
Exploration and Production | United States | Sales of Purchased Oil and Gas
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax	2,390,000,000	2,978,000,000	1,638,000,000
Exploration and Production | United States | Third-Party Services
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax	0
Exploration and Production | Guyana | Crude Oil Revenue
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax			765,000,000
Revenue from both contract with customer and not from contract with customer, excluding assessed tax	3,486,000,000	2,771,000,000
Exploration and Production | Guyana | Natural Gas Liquids Revenue
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax	0	0	0
Exploration and Production | Guyana | Natural Gas Revenue
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax	0	0	0
Exploration and Production | Guyana | Sales of Purchased Oil and Gas
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax	70,000,000	53,000,000	16,000,000
Exploration and Production | Guyana | Third-Party Services
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax	0
Exploration and Production | Malaysia and JDA | Crude Oil Revenue
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax	144,000,000	134,000,000	83,000,000
Exploration and Production | Malaysia and JDA | Natural Gas Liquids Revenue
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax	0	0	0
Exploration and Production | Malaysia and JDA | Natural Gas Revenue
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax	800,000,000	739,000,000	655,000,000
Exploration and Production | Malaysia and JDA | Sales of Purchased Oil and Gas
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax	0	0	0
Exploration and Production | Malaysia and JDA | Third-Party Services
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax	0
Exploration and Production | Other | Crude Oil Revenue
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax	0	509,000,000	519,000,000
Exploration and Production | Other | Natural Gas Liquids Revenue
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax	0	0	0
Exploration and Production | Other | Natural Gas Revenue
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax	0	21,000,000	10,000,000
Exploration and Production | Other | Sales of Purchased Oil and Gas
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax	0	112,000,000	95,000,000
Exploration and Production | Other | Third-Party Services
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax	0
Midstream
Disaggregation of Revenue [Line Items]
Total sales and other operating revenues	11,000,000	0	0
Midstream | Crude Oil Revenue
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax	0	0	0
Midstream | Natural Gas Liquids Revenue
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax	0	0	0
Midstream | Natural Gas Revenue
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax	0	0	0
Midstream | Sales of Purchased Oil and Gas
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax	0	0	0
Midstream | Third-Party Services
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax	8,000,000
Operating Segments | United States
Disaggregation of Revenue [Line Items]
Total sales and other operating revenues	6,092,000,000	7,214,000,000	5,378,000,000
Operating Segments | Guyana
Disaggregation of Revenue [Line Items]
Total sales and other operating revenues	3,494,000,000	2,636,000,000	754,000,000
Operating Segments | Malaysia and JDA
Disaggregation of Revenue [Line Items]
Total sales and other operating revenues	925,000,000	873,000,000	738,000,000
Operating Segments | Other
Disaggregation of Revenue [Line Items]
Total sales and other operating revenues	0	601,000,000	603,000,000
Operating Segments | Exploration and Production
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax			7,683,000,000
Revenue from both contract with customer and not from contract with customer, excluding assessed tax	10,659,000,000	11,865,000,000
Other operating revenues	(159,000,000)	(541,000,000)	(210,000,000)
Total sales and other operating revenues	10,500,000,000	11,324,000,000	7,473,000,000
Operating Segments | Exploration and Production | United States
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax	6,159,000,000	7,526,000,000	5,540,000,000
Other operating revenues	(78,000,000)	(312,000,000)	(162,000,000)
Total sales and other operating revenues	6,081,000,000	7,214,000,000	5,378,000,000
Operating Segments | Exploration and Production | Guyana
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax			781,000,000
Revenue from both contract with customer and not from contract with customer, excluding assessed tax	3,556,000,000	2,824,000,000
Other operating revenues	(62,000,000)	(188,000,000)	(27,000,000)
Total sales and other operating revenues	3,494,000,000	2,636,000,000	754,000,000
Operating Segments | Exploration and Production | Malaysia and JDA
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax	944,000,000	873,000,000	738,000,000
Other operating revenues	(19,000,000)	0	0
Total sales and other operating revenues	925,000,000	873,000,000	738,000,000
Operating Segments | Exploration and Production | Other
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax	0	642,000,000	624,000,000
Other operating revenues	0	(41,000,000)	(21,000,000)
Total sales and other operating revenues	0	601,000,000	603,000,000
Operating Segments | Midstream
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax	1,346,000,000	1,273,000,000	1,204,000,000
Other operating revenues	3,000,000	0	0
Total sales and other operating revenues	1,349,000,000	1,273,000,000	1,204,000,000
Eliminations
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax	(1,338,000,000)	(1,273,000,000)	(1,204,000,000)
Other operating revenues	0	0	0
Total sales and other operating revenues	(1,338,000,000)	(1,273,000,000)	(1,204,000,000)
Eliminations | Exploration and Production
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax	0	0	0
Total sales and other operating revenues	0	0	0
Eliminations | Exploration and Production | United States
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax	0	0	0
Eliminations | Exploration and Production | Guyana
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax	0	0	0
Eliminations | Exploration and Production | Malaysia and JDA
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax	0	0	0
Eliminations | Exploration and Production | Other
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax	0	0	0
Eliminations | Midstream
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax	1,338,000,000	1,273,000,000	1,204,000,000
Total sales and other operating revenues	$ 1,338,000,000	$ 1,273,000,000	$ 1,204,000,000