REVENUES - Schedule of Interest Revenue Earned and Interest Expense Paid from Fully-paid Securities Lending (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Disaggregation of Revenue [Line Items]
Total net interest revenues	$ 274	$ 251	$ 813	$ 693
Fully-Paid Securities Lending
Disaggregation of Revenue [Line Items]
Interest revenue	20	12	60	35
Interest expense	(3)	(2)	(9)	(5)
Total net interest revenues	$ 17	$ 10	$ 51	$ 30