Quarterly report pursuant to Section 13 or 15(d)

FAIR VALUE HIERARCHY FOR INVESTMENTS???PORTFOLIO COMPOSITION - Percentage of Portfolio Investments by Type of Investment (Details)

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FAIR VALUE HIERARCHY FOR INVESTMENTS—PORTFOLIO COMPOSITION - Percentage of Portfolio Investments by Type of Investment (Details) - Investment Type Concentration Risk
 9 Months Ended 12 Months Ended
Sep. 30, 2022
Dec. 31, 2021
Investment Owned, At Cost    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Concentration risk, percentage 100.00% 100.00%
Investment Owned, At Cost | First lien debt    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Concentration risk, percentage 85.40% 82.50%
Investment Owned, At Cost | Equity    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Concentration risk, percentage 13.90% 16.20%
Investment Owned, At Cost | Second lien debt    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Concentration risk, percentage 0.10% 0.60%
Investment Owned, At Cost | Equity warrants    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Concentration risk, percentage 0.20% 0.30%
Investment Owned, At Cost | Other    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Concentration risk, percentage 0.40% 0.40%
Investment Owned, At Fair Value    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Concentration risk, percentage 100.00% 100.00%
Investment Owned, At Fair Value | First lien debt    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Concentration risk, percentage 76.10% 74.30%
Investment Owned, At Fair Value | Equity    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Concentration risk, percentage 23.20% 24.60%
Investment Owned, At Fair Value | Second lien debt    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Concentration risk, percentage 0.20% 0.50%
Investment Owned, At Fair Value | Equity warrants    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Concentration risk, percentage 0.10% 0.20%
Investment Owned, At Fair Value | Other    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Concentration risk, percentage 0.40% 0.40%