SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - DWR Loan (Details) - DWR Loan - USD ($) $ in Millions		12 Months Ended
	Jan. 11, 2024	Dec. 31, 2023	Dec. 31, 2022
Debt Instrument [Line Items]
Beginning balance		$ 312	$ 0
Proceeds received		0	350
Total deduction to Operating Expenses		(214)	(38)
Ending balance		98	312
Subsequent Event
Debt Instrument [Line Items]
Proceeds received	$ 233
Performance-Based Disbursements
Debt Instrument [Line Items]
Total deduction to Operating Expenses		(124)	(38)
Loan Forgiven
Debt Instrument [Line Items]
Total deduction to Operating Expenses		$ (90)	$ 0