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INVESTMENTS - Ivy Hill Asset Management, L.P. (Details) $ in Millions | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Jun. 30, 2023 USD ($) borrower | Jun. 30, 2022 USD ($) | Jun. 30, 2023 USD ($) borrower | Jun. 30, 2022 USD ($) | Dec. 31, 2022 USD ($)
Schedule of Investments [Line Items] |  |  |  |  |
Amortized cost of investments | $ 21,685.6 |  | $ 21,685.6 |  | $ 22,043.0
Purchases of investments |  |  | 2,452.0 | $ 4,849.0 |
Ivy Hill Asset Management, L.P. |  |  |  |  |
Schedule of Investments [Line Items] |  |  |  |  |
Amortized cost of investments | 1,968.0 |  | 1,968.0 |  | 2,048.0
Purchases of investments |  |  | 7.0 | 27.0 |
Realized loss on sale of investments |  |  | 11.0 | 7.0 |
Ivy Hill Asset Management, L.P. |  |  |  |  |
Schedule of Investments [Line Items] |  |  |  |  |
Assets under management | $ 13,500.0 |  | $ 13,500.0 |  |
Number of borrowers | borrower | 22 |  | 22 |  |
Amortized cost of investments | $ 2,436.0 |  | $ 2,436.0 |  | $ 2,370.0
Management and incentive fee income | 13.0 | $ 12.0 | 27.0 | 21.0 |
Other investment-related income | $ 95.0 | $ 44.0 | 156.0 | 79.0 |
Purchases of investments |  |  | $ 691.0 | $ 1,555.0 |

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