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STOCK-BASED COMPENSATION - Stock-Based Compensation Expense (Details) - USD ($)	2 Months Ended	10 Months Ended	12 Months Ended
	Dec. 31, 2020	Oct. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Compensation Related Costs [Abstract]
Stock-based compensation expense	$ 0	$ 3,000,000	$ 32,000,000	$ 45,000,000
Payments of cash-based portion of awards		$ 8,000,000	$ 25,000,000	$ 24,000,000

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- References

No definition available.

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- Definition

Amount of expense for employee benefit and equity-based compensation.

+ References

No definition available.

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- Definition

Aggregate cash paid by the entity during the period to settle equity instruments granted under equity-based payment arrangements.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (k)
-URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901

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