AGREEMENTS - Base Management Fee, Income Based Fee, and Capital Gains Incentive Fee (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
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

Amount of expense for investment management fee, including, but not limited to, expense in connection with research, selection, supervision, and custody of investment.

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 946
-SubTopic 830
-Name Accounting Standards Codification
-Section 55
-Paragraph 10
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479168/946-830-55-10

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
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-Name Accounting Standards Codification
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Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
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-Publisher FASB
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-Name Accounting Standards Codification
-Topic 850
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-URI https://asc.fasb.org/1943274/2147483326/850-10-50-1

Name:	us-gaap_ManagementFeeExpense
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration