Quarterly report pursuant to Section 13 or 15(d)

FAIR VALUE HIERARCHY FOR INVESTMENTS???PORTFOLIO COMPOSITION - Schedule of Level??3 Portfolio Investments (Details)

v3.23.3
FAIR VALUE HIERARCHY FOR INVESTMENTS—PORTFOLIO COMPOSITION - Schedule of Level 3 Portfolio Investments (Details)
$ in Thousands
Sep. 30, 2023
USD ($)
Dec. 31, 2022
USD ($)
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Total Level 3 investments $ 4,294,722 [1] $ 4,102,177 [2]
Significant Unobservable Inputs (Level 3)    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Total Level 3 investments $ 4,294,722 $ 4,100,273
Significant Unobservable Inputs (Level 3) | EBITDA multiple, outlier | Minimum    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Measurement input 2.0 2.0
Significant Unobservable Inputs (Level 3) | EBITDA multiple, outlier | Maximum    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Measurement input 15.7 15.7
Significant Unobservable Inputs (Level 3) | Risk adjusted discount factor, outlier | Minimum    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Measurement input 0.070 0.065
Significant Unobservable Inputs (Level 3) | Risk adjusted discount factor, outlier | Maximum    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Measurement input 0.335 0.433
Significant Unobservable Inputs (Level 3) | Equity investments | Discounted cash flow    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Total Level 3 investments $ 1,311,786 $ 1,172,077
Significant Unobservable Inputs (Level 3) | Equity investments | Discounted cash flow | WACC | Minimum    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Measurement input 0.094 0.094
Significant Unobservable Inputs (Level 3) | Equity investments | Discounted cash flow | WACC | Maximum    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Measurement input 0.225 0.225
Significant Unobservable Inputs (Level 3) | Equity investments | Discounted cash flow | WACC | Weighted Average    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Measurement input 0.145 0.145
Significant Unobservable Inputs (Level 3) | Equity investments | Discounted cash flow | WACC | Median    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Measurement input 0.154 0.154
Significant Unobservable Inputs (Level 3) | Equity investments | Market comparable / Enterprise value | EBITDA multiple | Minimum    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Measurement input 4.5 4.3
Significant Unobservable Inputs (Level 3) | Equity investments | Market comparable / Enterprise value | EBITDA multiple | Maximum    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Measurement input 8.5 8.3
Significant Unobservable Inputs (Level 3) | Equity investments | Market comparable / Enterprise value | EBITDA multiple | Weighted Average    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Measurement input 7.0 6.7
Significant Unobservable Inputs (Level 3) | Equity investments | Market comparable / Enterprise value | EBITDA multiple | Median    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Measurement input 6.2 6.0
Significant Unobservable Inputs (Level 3) | Debt investments | Discounted cash flow    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Total Level 3 investments $ 2,773,233 $ 2,663,958
Significant Unobservable Inputs (Level 3) | Debt investments | Discounted cash flow | Risk adjusted discount factor | Minimum    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Measurement input 0.098 0.085
Significant Unobservable Inputs (Level 3) | Debt investments | Discounted cash flow | Risk adjusted discount factor | Maximum    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Measurement input 0.185 0.188
Significant Unobservable Inputs (Level 3) | Debt investments | Discounted cash flow | Risk adjusted discount factor | Weighted Average    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Measurement input 0.129 0.122
Significant Unobservable Inputs (Level 3) | Debt investments | Discounted cash flow | Risk adjusted discount factor | Median    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Measurement input 0.130 0.124
Significant Unobservable Inputs (Level 3) | Debt investments | Discounted cash flow | Expected principal recovery percentage | Minimum    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Measurement input 0.000 0.000
Significant Unobservable Inputs (Level 3) | Debt investments | Discounted cash flow | Expected principal recovery percentage | Maximum    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Measurement input 1.000 1.000
Significant Unobservable Inputs (Level 3) | Debt investments | Discounted cash flow | Expected principal recovery percentage | Weighted Average    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Measurement input 0.995 0.994
Significant Unobservable Inputs (Level 3) | Debt investments | Discounted cash flow | Expected principal recovery percentage | Median    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Measurement input 1.000 1.000
Significant Unobservable Inputs (Level 3) | Debt investments | Market approach    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Total Level 3 investments $ 209,703 $ 264,238
Significant Unobservable Inputs (Level 3) | Debt investments | Market approach | Third-party quote | Minimum    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Measurement input 4.0 5.6
Significant Unobservable Inputs (Level 3) | Debt investments | Market approach | Third-party quote | Maximum    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Measurement input 99.0 98.5
Significant Unobservable Inputs (Level 3) | Debt investments | Market approach | Third-party quote | Weighted Average    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Measurement input 90.6 87.0
Significant Unobservable Inputs (Level 3) | Debt investments | Market approach | Third-party quote | Median    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Measurement input 94.0 91.4
[1] Investment fair value was determined using significant unobservable inputs, unless otherwise noted. See Note C—Fair Value Hierarchy for Investments—Portfolio Composition for further discussion. Negative fair value is the result of the capitalized discount on the loan or the unfunded commitment being valued below par.
[2] Investment fair value was determined using significant unobservable inputs, unless otherwise noted. See Note C — Fair Value Hierarchy for Investments — Portfolio Composition for further discussion. Negative fair value is the result of the capitalized discount on the loan or the unfunded commitment being valued below par.