FAIR VALUE MEASUREMENTS - Schedule of Level 3 Activity (Details) - Level 3 - Options and Warrants - Carrying Value $ in Millions	3 Months Ended
Mar. 31, 2021 USD ($)
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
December 31, 2020	$ 332
44286	$ 435

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

No definition available.

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Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration