Revenue (Detail) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended |
Sep. 30, 2021 | Sep. 30, 2020 | Sep. 30, 2021 | Sep. 30, 2020 |
Disaggregation of Revenue [Line Items] | | | | |
Total revenues from contracts with customers | $ 1,823 | $ 1,015 | $ 5,416 | $ 2,911 |
Other operating revenues | (64) | 144 | (180) | 435 |
Total sales and other operating revenues | 1,759 | 1,159 | 5,236 | 3,346 |
Crude oil revenue | | | | |
Disaggregation of Revenue [Line Items] | | | | |
Total revenues from contracts with customers | 974 | 575 | 3,135 | 1,616 |
Natural gas liquids revenue | | | | |
Disaggregation of Revenue [Line Items] | | | | |
Total revenues from contracts with customers | 143 | 68 | 406 | 159 |
Natural gas revenue | | | | |
Disaggregation of Revenue [Line Items] | | | | |
Total revenues from contracts with customers | 222 | 151 | 741 | 455 |
Sales of purchased oil and gas | | | | |
Disaggregation of Revenue [Line Items] | | | | |
Total revenues from contracts with customers | 484 | 221 | 1,134 | 681 |
Exploration and Production | | | | |
Disaggregation of Revenue [Line Items] | | | | |
Total sales and other operating revenues | 1,759 | 1,159 | 5,236 | 3,346 |
Exploration and Production | Crude oil revenue | | | | |
Disaggregation of Revenue [Line Items] | | | | |
Total revenues from contracts with customers | 974 | 575 | 3,135 | 1,616 |
Exploration and Production | Crude oil revenue | United States | | | | |
Disaggregation of Revenue [Line Items] | | | | |
Total revenues from contracts with customers | 654 | 471 | 2,200 | 1,390 |
Exploration and Production | Crude oil revenue | Guyana | | | | |
Disaggregation of Revenue [Line Items] | | | | |
Total revenues from contracts with customers | 214 | 80 | 529 | 149 |
Exploration and Production | Crude oil revenue | Malaysia & JDA | | | | |
Disaggregation of Revenue [Line Items] | | | | |
Total revenues from contracts with customers | 2 | 13 | 51 | 16 |
Exploration and Production | Crude oil revenue | Other | | | | |
Disaggregation of Revenue [Line Items] | | | | |
Total revenues from contracts with customers | 104 | 11 | 355 | 61 |
Exploration and Production | Natural gas liquids revenue | | | | |
Disaggregation of Revenue [Line Items] | | | | |
Total revenues from contracts with customers | 143 | 68 | 406 | 159 |
Exploration and Production | Natural gas liquids revenue | United States | | | | |
Disaggregation of Revenue [Line Items] | | | | |
Total revenues from contracts with customers | 143 | 68 | 406 | 159 |
Exploration and Production | Natural gas liquids revenue | Guyana | | | | |
Disaggregation of Revenue [Line Items] | | | | |
Total revenues from contracts with customers | 0 | 0 | 0 | 0 |
Exploration and Production | Natural gas liquids revenue | Malaysia & JDA | | | | |
Disaggregation of Revenue [Line Items] | | | | |
Total revenues from contracts with customers | 0 | 0 | 0 | 0 |
Exploration and Production | Natural gas liquids revenue | Other | | | | |
Disaggregation of Revenue [Line Items] | | | | |
Total revenues from contracts with customers | 0 | 0 | 0 | 0 |
Exploration and Production | Natural gas revenue | | | | |
Disaggregation of Revenue [Line Items] | | | | |
Total revenues from contracts with customers | 222 | 151 | 741 | 455 |
Exploration and Production | Natural gas revenue | United States | | | | |
Disaggregation of Revenue [Line Items] | | | | |
Total revenues from contracts with customers | 77 | 34 | 251 | 104 |
Exploration and Production | Natural gas revenue | Guyana | | | | |
Disaggregation of Revenue [Line Items] | | | | |
Total revenues from contracts with customers | 0 | 0 | 0 | 0 |
Exploration and Production | Natural gas revenue | Malaysia & JDA | | | | |
Disaggregation of Revenue [Line Items] | | | | |
Total revenues from contracts with customers | 143 | 116 | 484 | 344 |
Exploration and Production | Natural gas revenue | Other | | | | |
Disaggregation of Revenue [Line Items] | | | | |
Total revenues from contracts with customers | 2 | 1 | 6 | 7 |
Exploration and Production | Sales of purchased oil and gas | | | | |
Disaggregation of Revenue [Line Items] | | | | |
Total revenues from contracts with customers | 484 | 221 | 1,134 | 681 |
Exploration and Production | Sales of purchased oil and gas | United States | | | | |
Disaggregation of Revenue [Line Items] | | | | |
Total revenues from contracts with customers | 457 | 220 | 1,054 | 679 |
Exploration and Production | Sales of purchased oil and gas | Guyana | | | | |
Disaggregation of Revenue [Line Items] | | | | |
Total revenues from contracts with customers | 4 | 1 | 12 | 2 |
Exploration and Production | Sales of purchased oil and gas | Malaysia & JDA | | | | |
Disaggregation of Revenue [Line Items] | | | | |
Total revenues from contracts with customers | 0 | 0 | 0 | 0 |
Exploration and Production | Sales of purchased oil and gas | Other | | | | |
Disaggregation of Revenue [Line Items] | | | | |
Total revenues from contracts with customers | 23 | 0 | 68 | 0 |
Midstream | | | | |
Disaggregation of Revenue [Line Items] | | | | |
Total sales and other operating revenues | 0 | 0 | 0 | 0 |
Midstream | Crude oil revenue | | | | |
Disaggregation of Revenue [Line Items] | | | | |
Total revenues from contracts with customers | 0 | 0 | 0 | 0 |
Midstream | Natural gas liquids revenue | | | | |
Disaggregation of Revenue [Line Items] | | | | |
Total revenues from contracts with customers | 0 | 0 | 0 | 0 |
Midstream | Natural gas revenue | | | | |
Disaggregation of Revenue [Line Items] | | | | |
Total revenues from contracts with customers | 0 | 0 | 0 | 0 |
Midstream | Sales of purchased oil and gas | | | | |
Disaggregation of Revenue [Line Items] | | | | |
Total revenues from contracts with customers | 0 | 0 | 0 | 0 |
Eliminations | | | | |
Disaggregation of Revenue [Line Items] | | | | |
Total revenues from contracts with customers | (304) | (264) | (887) | (825) |
Other operating revenues | 0 | 0 | 0 | 0 |
Total sales and other operating revenues | (304) | (264) | (887) | (825) |
Eliminations | Exploration and Production | | | | |
Disaggregation of Revenue [Line Items] | | | | |
Total revenues from contracts with customers | 0 | 0 | 0 | 0 |
Total sales and other operating revenues | 0 | 0 | 0 | 0 |
Eliminations | Exploration and Production | United States | | | | |
Disaggregation of Revenue [Line Items] | | | | |
Total revenues from contracts with customers | 0 | 0 | 0 | 0 |
Eliminations | Exploration and Production | Guyana | | | | |
Disaggregation of Revenue [Line Items] | | | | |
Total revenues from contracts with customers | 0 | 0 | 0 | 0 |
Eliminations | Exploration and Production | Malaysia & JDA | | | | |
Disaggregation of Revenue [Line Items] | | | | |
Total revenues from contracts with customers | 0 | 0 | 0 | 0 |
Eliminations | Exploration and Production | Other | | | | |
Disaggregation of Revenue [Line Items] | | | | |
Total revenues from contracts with customers | 0 | 0 | 0 | 0 |
Eliminations | Midstream | | | | |
Disaggregation of Revenue [Line Items] | | | | |
Total revenues from contracts with customers | 304 | 264 | 887 | 825 |
Total sales and other operating revenues | 304 | 264 | 887 | 825 |
Operating Segments | Exploration and Production | | | | |
Disaggregation of Revenue [Line Items] | | | | |
Total revenues from contracts with customers | 1,823 | 1,015 | 5,416 | 2,911 |
Other operating revenues | (64) | 144 | (180) | 435 |
Total sales and other operating revenues | 1,759 | 1,159 | 5,236 | 3,346 |
Operating Segments | Exploration and Production | United States | | | | |
Disaggregation of Revenue [Line Items] | | | | |
Total revenues from contracts with customers | 1,331 | 793 | 3,911 | 2,332 |
Other operating revenues | (51) | 125 | (145) | 368 |
Total sales and other operating revenues | 1,280 | 918 | 3,766 | 2,700 |
Operating Segments | Exploration and Production | Guyana | | | | |
Disaggregation of Revenue [Line Items] | | | | |
Total revenues from contracts with customers | 218 | 81 | 541 | 151 |
Other operating revenues | (9) | 18 | (19) | 51 |
Total sales and other operating revenues | 209 | 99 | 522 | 202 |
Operating Segments | Exploration and Production | Malaysia & JDA | | | | |
Disaggregation of Revenue [Line Items] | | | | |
Total revenues from contracts with customers | 145 | 129 | 535 | 360 |
Other operating revenues | 0 | 0 | 0 | 1 |
Total sales and other operating revenues | 145 | 129 | 535 | 361 |
Operating Segments | Exploration and Production | Other | | | | |
Disaggregation of Revenue [Line Items] | | | | |
Total revenues from contracts with customers | 129 | 12 | 429 | 68 |
Other operating revenues | (4) | 1 | (16) | 15 |
Total sales and other operating revenues | 125 | 13 | 413 | 83 |
Operating Segments | Midstream | | | | |
Disaggregation of Revenue [Line Items] | | | | |
Total revenues from contracts with customers | 304 | 264 | 887 | 825 |
Other operating revenues | 0 | 0 | 0 | 0 |
Total sales and other operating revenues | $ 304 | $ 264 | $ 887 | $ 825 |