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Fair Value - Unobservable Inputs (Details) $ in Thousands | Dec. 31, 2024 USD ($) | Dec. 31, 2023 USD ($)
--- | --- | ---
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Fair Value | $ 3,091,024 | $ 3,011,322
Level III |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Fair Value | 2,987,078 | 2,938,849
Level III | First lien | Market & income approach |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Fair Value | $ 1,884,611 | $ 1,559,300
Level III | First lien | Market & income approach | EBITDA multiple | Low |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Measurement input | 6.0 | 5.0
Level III | First lien | Market & income approach | EBITDA multiple | High |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Measurement input | 35.0 | 24.0
Level III | First lien | Market & income approach | EBITDA multiple | Weighted Average |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Measurement input | 14.8 | 15.1
Level III | First lien | Market & income approach | Revenue multiple | Low |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Measurement input | 3.0 | 5.0
Level III | First lien | Market & income approach | Revenue multiple | High |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Measurement input | 19.5 | 19.5
Level III | First lien | Market & income approach | Revenue multiple | Weighted Average |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Measurement input | 6.9 | 10.6
Level III | First lien | Market & income approach | Discount rate | Low |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Measurement input | 0.068 | 0.086
Level III | First lien | Market & income approach | Discount rate | High |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Measurement input | 0.221 | 0.220
Level III | First lien | Market & income approach | Discount rate | Weighted Average |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Measurement input | 0.098 | 0.102
Level III | First lien | Other |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Fair Value | $ 17,999 | $ 78,589
Level III | Second lien | Market & income approach |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Fair Value | $ 144,003 | $ 403,180
Level III | Second lien | Market & income approach | EBITDA multiple | Low |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Measurement input | 7.0 | 7.0
Level III | Second lien | Market & income approach | EBITDA multiple | High |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Measurement input | 20.0 | 20.0
Level III | Second lien | Market & income approach | EBITDA multiple | Weighted Average |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Measurement input | 15.2 | 14.4
Level III | Second lien | Market & income approach | Discount rate | Low |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Measurement input | 0.101 | 0.092
Level III | Second lien | Market & income approach | Discount rate | High |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Measurement input | 0.206 | 0.300
Level III | Second lien | Market & income approach | Discount rate | Weighted Average |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Measurement input | 0.122 | 0.121
Level III | Second lien | Other |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Fair Value | $ 6,331 | $ 3,000
Level III | Subordinated | Market & income approach |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Fair Value | $ 102,034 | $ 82,871
Level III | Subordinated | Market & income approach | EBITDA multiple | Low |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Measurement input | 8.0 | 8.0
Level III | Subordinated | Market & income approach | EBITDA multiple | High |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Measurement input | 21.0 | 22.0
Level III | Subordinated | Market & income approach | EBITDA multiple | Weighted Average |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Measurement input | 15.4 | 16.0
Level III | Subordinated | Market & income approach | Discount rate | Low |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Measurement input | 0.125 | 0.129
Level III | Subordinated | Market & income approach | Discount rate | High |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Measurement input | 0.259 | 0.209
Level III | Subordinated | Market & income approach | Discount rate | Weighted Average |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Measurement input | 0.168 | 0.119
Level III | Equity and other | Market & income approach |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Fair Value | $ 422,851 | $ 430,828
Level III | Equity and other | Market & income approach | EBITDA multiple | Low |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Measurement input | 5.5 | 5.5
Level III | Equity and other | Market & income approach | EBITDA multiple | High |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Measurement input | 26.5 | 34.0
Level III | Equity and other | Market & income approach | EBITDA multiple | Weighted Average |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Measurement input | 12.8 | 12.6
Level III | Equity and other | Market & income approach | Revenue multiple | Low |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Measurement input | 9.0 | 9.0
Level III | Equity and other | Market & income approach | Revenue multiple | High |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Measurement input | 19.5 | 11.0
Level III | Equity and other | Market & income approach | Revenue multiple | Weighted Average |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Measurement input | 14.1 | 10.0
Level III | Equity and other | Market & income approach | Discount rate | Low |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Measurement input | 0.082 | 0.098
Level III | Equity and other | Market & income approach | Discount rate | High |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Measurement input | 0.446 | 0.431
Level III | Equity and other | Market & income approach | Discount rate | Weighted Average |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Measurement input | 0.089 | 0.122
Level III | Equity and other | Income approach |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Fair Value | $ 387,194 | $ 370,807
Level III | Equity and other | Income approach | Discount rate | Low |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Measurement input | 0.064 | 0.064
Level III | Equity and other | Income approach | Discount rate | High |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Measurement input | 0.122 | 0.126
Level III | Equity and other | Income approach | Discount rate | Weighted Average |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Measurement input | 0.099 | 0.101
Level III | Equity and other | Other |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Fair Value | $ 22,055 | $ 10,274

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