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AGREEMENTS - Base Management Fee, Income Based Fee, and Capital Gains Incentive Fee (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
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Sep. 30, 2024 | Sep. 30, 2023 | Sep. 30, 2024 | Sep. 30, 2023
Investment Company [Abstract] |  |  |  |
Base management fee | $ 96 | $ 81 | $ 274 | $ 239
Income based fee | 92 | 83 | 273 | 238
Capital gains incentive fee | $ 7 | $ 42 | $ 19 | $ 40

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