BUSINESS COMBINATIONS - Narrative (Details) - USD ($) $ in Millions		3 Months Ended	12 Months Ended
	Jul. 03, 2023	Dec. 31, 2023	Dec. 31, 2023	Dec. 31, 2022
Business Acquisition [Line Items]
Post-acquisition adjustments			$ 7	$ (1)
Robinhood Credit
Business Acquisition [Line Items]
Business combination consideration transferred	$ 104
Weighted average useful life	5 years
Post-acquisition adjustments		$ 7
Measurement period adjustment to accounts payable and accrued expenses		7
Increase to other current assets and other current liabilities		$ 25