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INVESTMENTS - Senior Direct Lending Program (Details) $ in Millions | Mar. 31, 2023 USD ($) loan | Dec. 31, 2022 USD ($) loan
--- | --- | ---
Schedule of Investments [Line Items] |  |
Amortized Cost | $ 21,429.6 | $ 22,043.0
Fair Value | 21,148.0 | 21,779.8
Subordinated certificates of the SDLP |  |
Schedule of Investments [Line Items] |  |
Amortized Cost | 1,282.0 | 1,274.0
Fair Value | $ 1,231.0 | $ 1,249.0
Yield on investment, at cost | 13.50% | 13.50%
Yield on investment, at fair value | 14.10% | 13.80%
Number of loans on non-accrual status | loan | 1 | 1
Subordinated certificates of the SDLP | London Interbank Offered Rate (LIBOR) |  |
Schedule of Investments [Line Items] |  |
Interest rate, spread | 8.00% |
Subordinated certificates of the SDLP | Ares Capital Corporation |  |
Schedule of Investments [Line Items] |  |
Ownership percentage of outstanding SDLP Certificates | 87.50% | 87.50%
Subordinated certificates of the SDLP | Client of Varagon |  |
Schedule of Investments [Line Items] |  |
Ownership percentage of outstanding SDLP Certificates | 12.50% | 12.50%
Senior Direct Lending Program |  |
Schedule of Investments [Line Items] |  |
Amount available for commitment | $ 450.0 |
Capital available to the SDLP | 6,150.0 | $ 6,150.0
Amortized Cost | 5,210.0 | 5,166.0
Fair Value | 4,932.0 | 4,958.0
Senior Direct Lending Program | Ares Capital Corporation |  |
Schedule of Investments [Line Items] |  |
Capital available to the SDLP | $ 1,444.0 | $ 1,444.0

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