INVESTMENTS - Interest Income and Capital Structuring Service and Other Fees Earned (Details) - Senior Direct Lending Program - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Schedule of Investments [Line Items]
Interest income	$ 174	$ 146	$ 138
Capital structuring service fees	$ 13	$ 22	$ 22