INCOME TAXES - Unrecognized Tax Benefits (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]
Unrecognized benefit - beginning of period	$ 58	$ 46
Gross increases - current year tax positions	16	16
Gross increases - prior year tax positions	0	0
Gross decrease - prior year tax positions	0	(4)
Unrecognized benefit - end of period	$ 74	$ 58