Revenue - Summary of Revenue from Contracts with Customers on a Disaggregated Basis (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax			$ 11,865
Revenue from both contract with customer and not from contract with customer, excluding assessed tax	$ 12,849	$ 10,667
Other operating revenues	47	(156)	(541)
Total sales and other operating revenues	12,896	10,511	11,324
Gain (loss) on commodity derivatives	$ 0	$ (190)	$ (585)
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			$ 6,821
Revenue from both contract with customer and not from contract with customer, excluding assessed tax	$ 8,869	$ 6,688
Natural Gas Liquids Revenue
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax	613	529	703
Natural Gas Revenue
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax	957	982	1,198
Sales of Purchased Oil and Gas
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax	2,386	2,460	3,143
Third-Party Services
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax	24	8
Guyana | Crude Oil Revenue
Disaggregation of Revenue [Line Items]
Revenue not from contracts with customer	842	433	230
Exploration and Production
Disaggregation of Revenue [Line Items]
Total sales and other operating revenues	12,869	10,500	11,324
Exploration and Production | Crude Oil Revenue
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax			6,821
Revenue from both contract with customer and not from contract with customer, excluding assessed tax	8,869	6,688
Exploration and Production | Natural Gas Liquids Revenue
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax	613	529	703
Exploration and Production | Natural Gas Revenue
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax	957	982	1,198
Exploration and Production | Sales of Purchased Oil and Gas
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax	2,386	2,460	3,143
Exploration and Production | Third-Party Services
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax	0	0
Exploration and Production | United States | Crude Oil Revenue
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax	3,205	3,058	3,407
Exploration and Production | United States | Natural Gas Liquids Revenue
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax	613	529	703
Exploration and Production | United States | Natural Gas Revenue
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax	146	182	438
Exploration and Production | United States | Sales of Purchased Oil and Gas
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax	2,275	2,390	2,978
Exploration and Production | United States | Third-Party Services
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax	0	0
Exploration and Production | Guyana | Crude Oil Revenue
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax			2,771
Revenue from both contract with customer and not from contract with customer, excluding assessed tax	5,525	3,486
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	111	70	53
Exploration and Production | Guyana | Third-Party Services
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax	0	0
Exploration and Production | Malaysia and JDA | Crude Oil Revenue
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax	139	144	134
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	811	800	739
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	0
Exploration and Production | Other | Crude Oil Revenue
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax	0	0	509
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	0	21
Exploration and Production | Other | Sales of Purchased Oil and Gas
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax	0	0	112
Exploration and Production | Other | Third-Party Services
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax	0	0
Midstream
Disaggregation of Revenue [Line Items]
Total sales and other operating revenues	27	11	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	24	8
Operating Segments | United States
Disaggregation of Revenue [Line Items]
Total sales and other operating revenues	6,310	6,092	7,214
Operating Segments | Guyana
Disaggregation of Revenue [Line Items]
Total sales and other operating revenues	5,636	3,494	2,636
Operating Segments | Malaysia and JDA
Disaggregation of Revenue [Line Items]
Total sales and other operating revenues	950	925	873
Operating Segments | Other
Disaggregation of Revenue [Line Items]
Total sales and other operating revenues	0	0	601
Operating Segments | Exploration and Production
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax			11,865
Revenue from both contract with customer and not from contract with customer, excluding assessed tax	12,825	10,659
Other operating revenues	44	(159)	(541)
Total sales and other operating revenues	12,869	10,500	11,324
Operating Segments | Exploration and Production | United States
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax	6,239	6,159	7,526
Other operating revenues	44	(78)	(312)
Total sales and other operating revenues	6,283	6,081	7,214
Operating Segments | Exploration and Production | Guyana
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax			2,824
Revenue from both contract with customer and not from contract with customer, excluding assessed tax	5,636	3,556
Other operating revenues	0	(62)	(188)
Total sales and other operating revenues	5,636	3,494	2,636
Operating Segments | Exploration and Production | Malaysia and JDA
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax	950	944	873
Other operating revenues	0	(19)	0
Total sales and other operating revenues	950	925	873
Operating Segments | Exploration and Production | Other
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax	0	0	642
Other operating revenues	0	0	(41)
Total sales and other operating revenues	0	0	601
Operating Segments | Midstream
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax	1,492	1,346	1,273
Other operating revenues	3	3	0
Total sales and other operating revenues	1,495	1,349	1,273
Eliminations
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax	(1,468)	(1,338)	(1,273)
Other operating revenues	0	0	0
Total sales and other operating revenues	(1,468)	(1,338)	(1,273)
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	1,468	1,338	1,273
Total sales and other operating revenues	$ 1,468	$ 1,338	$ 1,273