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INVESTMENTS - Funded Capital and Unfunded Capital Commitments (Details) - USD ($) $ in Millions	Mar. 31, 2025	Dec. 31, 2024
Schedule of Investments [Line Items]
Total net adjusted unfunded loan commitments	$ 32	$ 29
Senior Direct Lending Program
Schedule of Investments [Line Items]
Total capital funded	4,855	5,054
Total net adjusted unfunded loan commitments	463	489
Senior Direct Lending Program | Ares Capital Corporation
Schedule of Investments [Line Items]
Total capital funded	1,282	1,310
Total net adjusted unfunded loan commitments	$ 111	$ 119

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