DEBT - Debt Securities, Trading, and Equity Securities, FV-NI (Details) - Convertible Debt - 2021 Convertible Notes - USD ($)	12 Months Ended
Dec. 31, 2021	Jul. 31, 2021
Debt Instrument [Line Items]
Fair value of shares issued upon conversion	$ 2,941,000,000
Unpaid principal balance	2,500,000,000	$ 2,500,000,000
Loss on convertible notes, net	$ (441,000,000)

Face (par) amount of debt instrument at time of issuance.

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant