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INVESTMENTS - Interest Income and Capital Structuring Service and Other Fees Earned (Details) - Subordinated certificates of the SDLP - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
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Sep. 30, 2022 | Sep. 30, 2021 | Sep. 30, 2022 | Sep. 30, 2021
Schedule of Investments [Line Items] |  |  |  |
Interest income | $ 37 | $ 33 | $ 105 | $ 106
Capital structuring service fees | $ 7 | $ 7 | $ 15 | $ 13

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- Definition Amount of operating interest income, including, but not limited to, amortization and accretion of premiums and discounts on securities. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.1(e)) -URI https://asc.fasb.org/extlink&oid=126953954&loc=SL114868664-224227 + Details
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