REVENUES - Schedule of Interest Revenue Earned and Interest Expense Paid from Fully-paid Securities Lending (Details) - Fully-Paid Securities Lending - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Disaggregation of Revenue [Line Items]
Interest revenue	$ 12	$ 5	$ 35	$ 5
Interest expense	(2)	(1)	(5)	(1)
Fully-Paid Securities Lending, net	$ 10	$ 4	$ 30	$ 4