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LAWSUITS, CLAIMS, COMMITMENTS AND CONTINGENCIES (Details) - USD ($) $ in Millions |  | 1 Months Ended | 3 Months Ended | 12 Months Ended
--- | --- | --- | --- | ---
Apr. 05, 2024 | Jun. 30, 2023 | Mar. 31, 2021 | Mar. 31, 2024 | Dec. 31, 2021 | Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
Federal |  |  |  |  |  |  |  |
Lawsuits, commitments and contingencies |  |  |  |  |  |  |  |
Potential cash tax |  |  |  | $ 1,400 |  |  |  |
State |  |  |  |  |  |  |  |
Lawsuits, commitments and contingencies |  |  |  |  |  |  |  |
Potential cash tax |  |  |  | 28 |  |  |  |
Anadarko |  |  |  |  |  |  |  |
Lawsuits, commitments and contingencies |  |  |  |  |  |  |  |
Tentative cash tax refund |  |  |  |  |  |  | $ 881 |
Potential accrued interest |  |  |  | 622 |  |  |  |
Arbitration filed by Andes Petroleum Ecuador Ltd |  |  |  |  |  |  |  |
Lawsuits, commitments and contingencies |  |  |  |  |  |  |  |
Proceeds from settlement |  |  |  |  |  |  | $ 1,000 |
Recovery of amount awarded in settlement amount (as a percent) |  |  |  |  |  |  | 60.00% |
Percentage of judgment amount claimed |  |  |  |  | 40.00% | 40.00% |  |
Own economic interest (as a percent) |  |  |  |  |  | 60.00% |  |
Amount awarded to other party in litigation |  |  | $ 391 |  |  |  |  |
Litigation settlement interest |  | $ 166 |  |  |  |  |  |
Arbitration filed by Andes Petroleum Ecuador Ltd | Subsequent Event |  |  |  |  |  |  |  |
Lawsuits, commitments and contingencies |  |  |  |  |  |  |  |
Gains related to legal settlements | $ 182 |  |  |  |  |  |  |
Tronox Settlement |  |  |  |  |  |  |  |
Lawsuits, commitments and contingencies |  |  |  |  |  |  |  |
Payments for settlement |  |  |  |  |  |  |  | $ 5,200
Additional cash benefits realized from utilization of tax attributes from deduction of legal settlement |  |  |  | $ 500 |  |  |  |

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