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CHAPTER 11 PROCEEDINGS - Commencement of Bankruptcy Proceedings (Details) - USD ($) $ in Millions |  | 2 Months Ended | 10 Months Ended
--- | --- | --- | ---
Oct. 27, 2020 | Dec. 31, 2020 | Oct. 31, 2020
Debt Instrument [Line Items] |  |  |
Gain on settlement of liabilities subject to compromise |  | $ 0 | $ 4,022
2017 Credit Agreement |  |  |
Debt Instrument [Line Items] |  |  |
Gain on settlement of liabilities subject to compromise | $ 4,000 |  |

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