Revenue - Summary of Revenue from Contracts with Customers on a Disaggregated Basis (Detail) - USD ($)	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Disaggregation of Revenue [Line Items]
Revenue from both contract with customer and not from contract with customer	$ 3,308,000,000	$ 2,442,000,000
Other operating revenues	1,000,000	(31,000,000)
Total revenues and non-operating income	3,309,000,000	2,411,000,000
Gain (loss) on commodity derivatives	$ 0	$ (34,000,000)
Derivative, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]	Total revenues and non-operating income	Total revenues and non-operating income
Crude oil revenue
Disaggregation of Revenue [Line Items]
Revenue from both contract with customer and not from contract with customer	$ 2,328,000,000	$ 1,523,000,000
Natural gas liquids revenue
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax	153,000,000	141,000,000
Natural gas revenue
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax	259,000,000	234,000,000
Sales of purchased oil and gas
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax	563,000,000	544,000,000
Third-party services
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax	5,000,000
Exploration and Production
Disaggregation of Revenue [Line Items]
Total revenues and non-operating income	3,303,000,000	2,409,000,000
Exploration and Production | Crude oil revenue
Disaggregation of Revenue [Line Items]
Revenue from both contract with customer and not from contract with customer	2,328,000,000	1,523,000,000
Exploration and Production | Crude oil revenue | United States
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax	789,000,000	669,000,000
Exploration and Production | Crude oil revenue | Guyana
Disaggregation of Revenue [Line Items]
Revenue from both contract with customer and not from contract with customer	1,510,000,000	825,000,000
Revenue not from contract with customer	252,000,000	108,000,000
Exploration and Production | Crude oil revenue | Malaysia and JDA
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax	29,000,000	29,000,000
Exploration and Production | Natural gas liquids revenue
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax	153,000,000	141,000,000
Exploration and Production | Natural gas liquids revenue | United States
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax	153,000,000	141,000,000
Exploration and Production | Natural gas liquids revenue | Guyana
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax	0	0
Exploration and Production | Natural gas liquids revenue | Malaysia and JDA
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax	0	0
Exploration and Production | Natural gas revenue
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax	259,000,000	234,000,000
Exploration and Production | Natural gas revenue | United States
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax	48,000,000	54,000,000
Exploration and Production | Natural gas revenue | Guyana
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax	0	0
Exploration and Production | Natural gas revenue | Malaysia and JDA
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax	211,000,000	180,000,000
Exploration and Production | Sales of purchased oil and gas
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax	563,000,000	544,000,000
Exploration and Production | Sales of purchased oil and gas | United States
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax	533,000,000	527,000,000
Exploration and Production | Sales of purchased oil and gas | Guyana
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax	30,000,000	17,000,000
Exploration and Production | Sales of purchased oil and gas | Malaysia and JDA
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax	0	0
Exploration and Production | Third-party services
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax	0
Exploration and Production | Third-party services | United States
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax	0
Exploration and Production | Third-party services | Guyana
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax	0
Exploration and Production | Third-party services | Malaysia and JDA
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax	0
Midstream
Disaggregation of Revenue [Line Items]
Total revenues and non-operating income	6,000,000	2,000,000
Midstream | Crude oil revenue
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax	0	0
Midstream | Natural gas liquids revenue
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax	0	0
Midstream | Natural gas revenue
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax	0	0
Midstream | Sales of purchased oil and gas
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax	0	0
Midstream | Third-party services
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax	5,000,000
Operating Segments | Exploration and Production
Disaggregation of Revenue [Line Items]
Revenue from both contract with customer and not from contract with customer	3,303,000,000	2,442,000,000
Other operating revenues	0	(33,000,000)
Total revenues and non-operating income	3,303,000,000	2,409,000,000
Operating Segments | Exploration and Production | United States
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax	1,523,000,000	1,391,000,000
Other operating revenues	0	(26,000,000)
Total revenues and non-operating income	1,523,000,000	1,365,000,000
Operating Segments | Exploration and Production | Guyana
Disaggregation of Revenue [Line Items]
Revenue from both contract with customer and not from contract with customer	1,540,000,000	842,000,000
Other operating revenues	0	(7,000,000)
Total revenues and non-operating income	1,540,000,000	835,000,000
Operating Segments | Exploration and Production | Malaysia and JDA
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax	240,000,000	209,000,000
Other operating revenues	0	0
Total revenues and non-operating income	240,000,000	209,000,000
Operating Segments | Midstream
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax	355,000,000	303,000,000
Other operating revenues	1,000,000	2,000,000
Total revenues and non-operating income	356,000,000	305,000,000
Eliminations
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax	(350,000,000)	(303,000,000)
Other operating revenues	0	0
Total revenues and non-operating income	(350,000,000)	(303,000,000)
Eliminations | Exploration and Production
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax	0	0
Total revenues and non-operating income	0	0
Eliminations | Exploration and Production | United States
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax	0	0
Eliminations | Exploration and Production | Guyana
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax	0	0
Eliminations | Exploration and Production | Malaysia and JDA
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax	0	0
Eliminations | Midstream
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax	350,000,000	303,000,000
Total revenues and non-operating income	$ 350,000,000	$ 303,000,000