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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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- Definition

Debtor Reorganization Items, Gain (Loss) On Settlement Of Liabilities Subject To Compromise

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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