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LAWSUITS, CLAIMS, COMMITMENTS AND CONTINGENCIES - LEGAL MATTERS (Details) - USD ($) $ in Millions |  | 1 Months Ended | 12 Months Ended
--- | --- | --- | ---
Mar. 26, 2021 | Dec. 31, 2021 | Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
Federal |  |  |  |  |
Long-term Purchase Commitment [Line Items] |  |  |  |  |
Potential income tax expense |  | $ 1,000 |  |  |
State |  |  |  |  |
Long-term Purchase Commitment [Line Items] |  |  |  |  |
Potential income tax expense |  | 27 |  |  |
Anadarko Petroleum Corporation |  |  |  |  |
Long-term Purchase Commitment [Line Items] |  |  |  |  |
Tax refund |  |  |  | $ 881 |
Accrued interest on potential income tax expense |  | 314 |  |  |
Arbitration Demand Filed By Andes Petroleum Ecuador Ltd |  |  |  |  |
Long-term Purchase Commitment [Line Items] |  |  |  |  |
Proceeds from settlement |  |  |  | $ 1,000 |
Recovery of amount awarded in settlement amount (as a percent) |  |  |  | 60.00% |
Claim to a settlement amount (as a percent) |  |  | 40.00% |  |
Own economic interest (as a percent) |  |  | 60.00% |  |
Amount awarded to other party in litigation | $ 391 | $ 558 |  |  |
Tronox Settlement |  |  |  |  |
Long-term Purchase Commitment [Line Items] |  |  |  |  |
Payments for settlement |  |  |  |  | $ 5,200

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