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
3 Months Ended 12 Months Ended
Mar. 31, 2023
Dec. 31, 2022
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 88.20% 88.50%
Investment Owned, At Cost | Equity investments    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Concentration risk, percentage 11.40% 10.80%
Investment Owned, At Cost | Second lien debt    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Concentration risk, percentage 0.30% 0.30%
Investment Owned, At Cost | Equity Warrant    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Concentration risk, percentage 0.10% 0.20%
Investment Owned, At Cost | Other Portfolio investments    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Concentration risk, percentage 0.00% 0.20%
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 80.90% 81.40%
Investment Owned, At Fair Value | Equity investments    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Concentration risk, percentage 18.70% 17.90%
Investment Owned, At Fair Value | Second lien debt    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Concentration risk, percentage 0.30% 0.30%
Investment Owned, At Fair Value | Equity Warrant    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Concentration risk, percentage 0.10% 0.10%
Investment Owned, At Fair Value | Other Portfolio investments    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Concentration risk, percentage 0.00% 0.30%