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REVENUE - DISAGGREGATION OF REVENUE (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2019 | Dec. 31, 2018
Disaggregation of Revenue [Line Items] |  |
Revenue from customers | $ 18,674 | $ 15,560
United States |  |
Disaggregation of Revenue [Line Items] |  |
Revenue from customers | 15,327 | 11,086
Middle East |  |
Disaggregation of Revenue [Line Items] |  |
Revenue from customers | 3,686 | 4,388
Latin America |  |
Disaggregation of Revenue [Line Items] |  |
Revenue from customers | 858 | 936
Other International |  |
Disaggregation of Revenue [Line Items] |  |
Revenue from customers | 67 | 80
Intersegment Eliminations |  |
Disaggregation of Revenue [Line Items] |  |
Revenue from customers | (1,264) | (930)
Intersegment Eliminations | United States |  |
Disaggregation of Revenue [Line Items] |  |
Revenue from customers | 0 | 0
Intersegment Eliminations | Middle East |  |
Disaggregation of Revenue [Line Items] |  |
Revenue from customers | 0 | 0
Intersegment Eliminations | Latin America |  |
Disaggregation of Revenue [Line Items] |  |
Revenue from customers | 0 | 0
Intersegment Eliminations | Other International |  |
Disaggregation of Revenue [Line Items] |  |
Revenue from customers | 0 | 0
Oil and Gas Segment |  |
Disaggregation of Revenue [Line Items] |  |
Revenue from customers | 13,530 | 10,441
Oil and Gas Segment | Oil |  |
Disaggregation of Revenue [Line Items] |  |
Revenue from customers | 11,852 | 9,245
Oil and Gas Segment | NGL |  |
Disaggregation of Revenue [Line Items] |  |
Revenue from customers | 921 | 691
Oil and Gas Segment | Gas |  |
Disaggregation of Revenue [Line Items] |  |
Revenue from customers | 763 | 495
Oil and Gas Segment | Other |  |
Disaggregation of Revenue [Line Items] |  |
Revenue from customers | (6) | 10
Oil and Gas Segment | United States |  |
Disaggregation of Revenue [Line Items] |  |
Revenue from customers | 9,492 | 5,747
Oil and Gas Segment | United States | Oil |  |
Disaggregation of Revenue [Line Items] |  |
Revenue from customers | 8,411 | 5,125
Oil and Gas Segment | United States | NGL |  |
Disaggregation of Revenue [Line Items] |  |
Revenue from customers | 658 | 430
Oil and Gas Segment | United States | Gas |  |
Disaggregation of Revenue [Line Items] |  |
Revenue from customers | 424 | 185
Oil and Gas Segment | United States | Other |  |
Disaggregation of Revenue [Line Items] |  |
Revenue from customers | (1) | 7
Oil and Gas Segment | Middle East |  |
Disaggregation of Revenue [Line Items] |  |
Revenue from customers | 3,335 | 3,963
Oil and Gas Segment | Middle East | Oil |  |
Disaggregation of Revenue [Line Items] |  |
Revenue from customers | 2,758 | 3,405
Oil and Gas Segment | Middle East | NGL |  |
Disaggregation of Revenue [Line Items] |  |
Revenue from customers | 263 | 261
Oil and Gas Segment | Middle East | Gas |  |
Disaggregation of Revenue [Line Items] |  |
Revenue from customers | 319 | 294
Oil and Gas Segment | Middle East | Other |  |
Disaggregation of Revenue [Line Items] |  |
Revenue from customers | (5) | 3
Oil and Gas Segment | Latin America |  |
Disaggregation of Revenue [Line Items] |  |
Revenue from customers | 703 | 731
Oil and Gas Segment | Latin America | Oil |  |
Disaggregation of Revenue [Line Items] |  |
Revenue from customers | 683 | 715
Oil and Gas Segment | Latin America | NGL |  |
Disaggregation of Revenue [Line Items] |  |
Revenue from customers | 0 | 0
Oil and Gas Segment | Latin America | Gas |  |
Disaggregation of Revenue [Line Items] |  |
Revenue from customers | 20 | 16
Oil and Gas Segment | Latin America | Other |  |
Disaggregation of Revenue [Line Items] |  |
Revenue from customers | 0 | 0
Oil and Gas Segment | Other International |  |
Disaggregation of Revenue [Line Items] |  |
Revenue from customers | 0 | 0
Oil and Gas Segment | Other International | Oil |  |
Disaggregation of Revenue [Line Items] |  |
Revenue from customers | 0 | 0
Oil and Gas Segment | Other International | NGL |  |
Disaggregation of Revenue [Line Items] |  |
Revenue from customers | 0 | 0
Oil and Gas Segment | Other International | Gas |  |
Disaggregation of Revenue [Line Items] |  |
Revenue from customers | 0 | 0
Oil and Gas Segment | Other International | Other |  |
Disaggregation of Revenue [Line Items] |  |
Revenue from customers | 0 | 0
Oil and Gas Segment | Intersegment Eliminations |  |
Disaggregation of Revenue [Line Items] |  |
Revenue from customers | 0 | 0
Oil and Gas Segment | Intersegment Eliminations | Oil |  |
Disaggregation of Revenue [Line Items] |  |
Revenue from customers | 0 | 0
Oil and Gas Segment | Intersegment Eliminations | NGL |  |
Disaggregation of Revenue [Line Items] |  |
Revenue from customers | 0 | 0
Oil and Gas Segment | Intersegment Eliminations | Gas |  |
Disaggregation of Revenue [Line Items] |  |
Revenue from customers | 0 | 0
Oil and Gas Segment | Intersegment Eliminations | Other |  |
Disaggregation of Revenue [Line Items] |  |
Revenue from customers | 0 | 0
Chemical Segment |  |
Disaggregation of Revenue [Line Items] |  |
Revenue from customers | 4,080 | 4,648
Chemical Segment | United States |  |
Disaggregation of Revenue [Line Items] |  |
Revenue from customers | 3,858 | 4,363
Chemical Segment | Middle East |  |
Disaggregation of Revenue [Line Items] |  |
Revenue from customers | 0 | 0
Chemical Segment | Latin America |  |
Disaggregation of Revenue [Line Items] |  |
Revenue from customers | 155 | 205
Chemical Segment | Other International |  |
Disaggregation of Revenue [Line Items] |  |
Revenue from customers | 67 | 80
Chemical Segment | Intersegment Eliminations |  |
Disaggregation of Revenue [Line Items] |  |
Revenue from customers | 0 | 0
Midstream Segment |  |
Disaggregation of Revenue [Line Items] |  |
Revenue from customers | 2,328 | 1,401
Midstream Segment | Gas Processing |  |
Disaggregation of Revenue [Line Items] |  |
Revenue from customers | 746 | 982
Midstream Segment | Gas Processing | WES |  |
Disaggregation of Revenue [Line Items] |  |
Revenue from customers | 1,110 |
Midstream Segment | Pipelines |  |
Disaggregation of Revenue [Line Items] |  |
Revenue from customers |  | 311
Midstream Segment | Power and Other |  |
Disaggregation of Revenue [Line Items] |  |
Revenue from customers | 472 | 108
Midstream Segment | United States |  |
Disaggregation of Revenue [Line Items] |  |
Revenue from customers | 1,977 | 976
Midstream Segment | United States | Gas Processing |  |
Disaggregation of Revenue [Line Items] |  |
Revenue from customers | 395 | 557
Midstream Segment | United States | Gas Processing | WES |  |
Disaggregation of Revenue [Line Items] |  |
Revenue from customers | 1,110 |
Midstream Segment | United States | Pipelines |  |
Disaggregation of Revenue [Line Items] |  |
Revenue from customers |  | 311
Midstream Segment | United States | Power and Other |  |
Disaggregation of Revenue [Line Items] |  |
Revenue from customers | 472 | 108
Midstream Segment | Middle East |  |
Disaggregation of Revenue [Line Items] |  |
Revenue from customers | 351 | 425
Midstream Segment | Middle East | Gas Processing |  |
Disaggregation of Revenue [Line Items] |  |
Revenue from customers | 351 | 425
Midstream Segment | Middle East | Gas Processing | WES |  |
Disaggregation of Revenue [Line Items] |  |
Revenue from customers | 0 |
Midstream Segment | Middle East | Pipelines |  |
Disaggregation of Revenue [Line Items] |  |
Revenue from customers |  | 0
Midstream Segment | Middle East | Power and Other |  |
Disaggregation of Revenue [Line Items] |  |
Revenue from customers | 0 | 0
Midstream Segment | Latin America |  |
Disaggregation of Revenue [Line Items] |  |
Revenue from customers | 0 | 0
Midstream Segment | Latin America | Gas Processing |  |
Disaggregation of Revenue [Line Items] |  |
Revenue from customers | 0 | 0
Midstream Segment | Latin America | Gas Processing | WES |  |
Disaggregation of Revenue [Line Items] |  |
Revenue from customers | 0 |
Midstream Segment | Latin America | Pipelines |  |
Disaggregation of Revenue [Line Items] |  |
Revenue from customers |  | 0
Midstream Segment | Latin America | Power and Other |  |
Disaggregation of Revenue [Line Items] |  |
Revenue from customers | 0 | 0
Midstream Segment | Other International |  |
Disaggregation of Revenue [Line Items] |  |
Revenue from customers | 0 | 0
Midstream Segment | Other International | Gas Processing |  |
Disaggregation of Revenue [Line Items] |  |
Revenue from customers | 0 | 0
Midstream Segment | Other International | Gas Processing | WES |  |
Disaggregation of Revenue [Line Items] |  |
Revenue from customers | 0 |
Midstream Segment | Other International | Pipelines |  |
Disaggregation of Revenue [Line Items] |  |
Revenue from customers |  | 0
Midstream Segment | Other International | Power and Other |  |
Disaggregation of Revenue [Line Items] |  |
Revenue from customers | 0 | 0
Midstream Segment | Intersegment Eliminations |  |
Disaggregation of Revenue [Line Items] |  |
Revenue from customers | 0 | 0
Midstream Segment | Intersegment Eliminations | Gas Processing |  |
Disaggregation of Revenue [Line Items] |  |
Revenue from customers | 0 | 0
Midstream Segment | Intersegment Eliminations | Gas Processing | WES |  |
Disaggregation of Revenue [Line Items] |  |
Revenue from customers | 0 |
Midstream Segment | Intersegment Eliminations | Pipelines |  |
Disaggregation of Revenue [Line Items] |  |
Revenue from customers |  | 0
Midstream Segment | Intersegment Eliminations | Power and Other |  |
Disaggregation of Revenue [Line Items] |  |
Revenue from customers | $ 0 | $ 0

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