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REVENUE - DISAGGREGATION OF REVENUE (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Disaggregation of Revenue [Line Items] |  |  |
Revenue from contracts with customers | $ 25,959 | $ 17,130 | $ 19,192
United States |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from contracts with customers | 22,787 | 14,167 | 15,327
International |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from contracts with customers | 4,266 | 3,721 | 5,129
Eliminations |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from contracts with customers | (1,094) | (758) | (1,264)
Oil and gas |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from contracts with customers | 19,285 | 11,995 | 14,048
Oil and gas | Oil |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from contracts with customers | 14,916 | 9,888 | 12,350
Oil and gas | NGL |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from contracts with customers | 2,528 | 1,055 | 941
Oil and gas | Gas |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from contracts with customers | 1,815 | 986 | 763
Oil and gas | Other |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from contracts with customers | 26 | 66 | (6)
Oil and gas | United States |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from contracts with customers | 15,823 | 9,048 | 9,492
Oil and gas | United States | Oil |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from contracts with customers | 12,072 | 7,485 | 8,411
Oil and gas | United States | NGL |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from contracts with customers | 2,203 | 838 | 658
Oil and gas | United States | Gas |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from contracts with customers | 1,524 | 660 | 424
Oil and gas | United States | Other |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from contracts with customers | 24 | 65 | (1)
Oil and gas | International |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from contracts with customers | 3,462 | 2,947 | 4,556
Oil and gas | International | Oil |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from contracts with customers | 2,844 | 2,403 | 3,939
Oil and gas | International | NGL |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from contracts with customers | 325 | 217 | 283
Oil and gas | International | Gas |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from contracts with customers | 291 | 326 | 339
Oil and gas | International | Other |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from contracts with customers | 2 | 1 | (5)
Oil and gas | Eliminations |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from contracts with customers | 0 | 0 | 0
Oil and gas | Eliminations | Oil |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from contracts with customers | 0 | 0 | 0
Oil and gas | Eliminations | NGL |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from contracts with customers | 0 | 0 | 0
Oil and gas | Eliminations | Gas |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from contracts with customers | 0 | 0 | 0
Oil and gas | Eliminations | Other |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from contracts with customers | 0 | 0 | 0
Chemical |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from contracts with customers | 5,243 | 3,726 | 4,080
Chemical | United States |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from contracts with customers | 4,995 | 3,524 | 3,858
Chemical | International |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from contracts with customers | 248 | 202 | 222
Chemical | Eliminations |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from contracts with customers | 0 | 0 | 0
Midstream and marketing |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from contracts with customers | 2,525 | 2,167 | 2,328
Midstream and marketing | United States |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from contracts with customers | 1,969 | 1,595 | 1,977
Midstream and marketing | International |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from contracts with customers | 556 | 572 | 351
Midstream and marketing | Eliminations |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from contracts with customers | $ 0 | $ 0 | $ 0

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