v3.26.3
Fair Value Measurements - Investments - Ranges of Significant Unobservable Inputs to Value Level 3 Assets (Details)
$ in Thousands
Sep. 30, 2026
USD ($)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]  
Fair Value $ 1,222,641
Portfolio companies  
Fair Value Measurement Inputs and Valuation Techniques [Line Items]  
Fair Value 886,648
Fair Value, Inputs, Level 3 [Member]  
Fair Value Measurement Inputs and Valuation Techniques [Line Items]  
Fair Value 886,648
Fair Value, Inputs, Level 3 [Member] | Portfolio companies  
Fair Value Measurement Inputs and Valuation Techniques [Line Items]  
Fair Value $ 886,648 [1]
Weighted Average Cost of Capital | Fair Value, Inputs, Level 3 [Member]  
Fair Value Measurement Inputs and Valuation Techniques [Line Items]  
Hypothetical Change (0.0025) [2],[3]
Infrastructure Asset Values 0.024 [2],[3]
Market Comparables | Weight Ascribed to Market Comparables | Fair Value, Inputs, Level 3 [Member]  
Fair Value Measurement Inputs and Valuation Techniques [Line Items]  
Hypothetical Change 0.0025 [2]
Infrastructure Asset Values (0.024) [2]
Minimum [Member] | Market Comparables | Weight Ascribed to Market Comparables | Fair Value, Inputs, Level 3 [Member]  
Fair Value Measurement Inputs and Valuation Techniques [Line Items]  
Range (Weighted Average) 0 [1],[2]
Minimum [Member] | Market Comparables | Weight Ascribed to Discounted Cashflow | Fair Value, Inputs, Level 3 [Member]  
Fair Value Measurement Inputs and Valuation Techniques [Line Items]  
Range (Weighted Average) 0 [2]
Minimum [Member] | Market Comparables | Weight ascribed to Transaction Price/Other | Fair Value, Inputs, Level 3 [Member]  
Fair Value Measurement Inputs and Valuation Techniques [Line Items]  
Range (Weighted Average) 0 [2],[4]
Minimum [Member] | Market Comparables | Enterprise Value / EBITDA Multiple | Fair Value, Inputs, Level 3 [Member]  
Fair Value Measurement Inputs and Valuation Techniques [Line Items]  
Range (Weighted Average) 13.7 [2],[5]
Minimum [Member] | Discounted Cashflows | Weighted Average Cost of Capital | Fair Value, Inputs, Level 3 [Member]  
Fair Value Measurement Inputs and Valuation Techniques [Line Items]  
Range (Weighted Average) 0.092 [2],[5]
Maximum [Member] | Market Comparables | Weight Ascribed to Market Comparables | Fair Value, Inputs, Level 3 [Member]  
Fair Value Measurement Inputs and Valuation Techniques [Line Items]  
Range (Weighted Average) 1 [1],[2]
Maximum [Member] | Market Comparables | Weight Ascribed to Discounted Cashflow | Fair Value, Inputs, Level 3 [Member]  
Fair Value Measurement Inputs and Valuation Techniques [Line Items]  
Range (Weighted Average) 1 [2]
Maximum [Member] | Market Comparables | Weight ascribed to Transaction Price/Other | Fair Value, Inputs, Level 3 [Member]  
Fair Value Measurement Inputs and Valuation Techniques [Line Items]  
Range (Weighted Average) 1 [2],[4]
Maximum [Member] | Market Comparables | Enterprise Value / EBITDA Multiple | Fair Value, Inputs, Level 3 [Member]  
Fair Value Measurement Inputs and Valuation Techniques [Line Items]  
Range (Weighted Average) 20 [2],[5]
Maximum [Member] | Discounted Cashflows | Weighted Average Cost of Capital | Fair Value, Inputs, Level 3 [Member]  
Fair Value Measurement Inputs and Valuation Techniques [Line Items]  
Range (Weighted Average) 0.193 [2],[5]
Weighted Average [Member] | Market Comparables | Weight Ascribed to Market Comparables | Fair Value, Inputs, Level 3 [Member]  
Fair Value Measurement Inputs and Valuation Techniques [Line Items]  
Range (Weighted Average) 0.203 [1],[2],[3]
Weighted Average [Member] | Market Comparables | Weight Ascribed to Discounted Cashflow | Fair Value, Inputs, Level 3 [Member]  
Fair Value Measurement Inputs and Valuation Techniques [Line Items]  
Range (Weighted Average) 0.486 [2],[3]
Weighted Average [Member] | Market Comparables | Weight ascribed to Transaction Price/Other | Fair Value, Inputs, Level 3 [Member]  
Fair Value Measurement Inputs and Valuation Techniques [Line Items]  
Range (Weighted Average) 31.1 [2],[3],[4]
Weighted Average [Member] | Market Comparables | Enterprise Value / EBITDA Multiple | Fair Value, Inputs, Level 3 [Member]  
Fair Value Measurement Inputs and Valuation Techniques [Line Items]  
Range (Weighted Average) 18.3 [2],[3],[5]
Weighted Average [Member] | Discounted Cashflows | Weighted Average Cost of Capital | Fair Value, Inputs, Level 3 [Member]  
Fair Value Measurement Inputs and Valuation Techniques [Line Items]  
Range (Weighted Average) 0.12 [2],[3],[5]
[1] The directional change from an increase in the weight ascribed to the market comparables approach would increase the fair value of the Level III investments if the market comparables approach results in a higher valuation than the discounted cash flow approach and transaction price approach. The opposite would be true if the market comparables approach results in a lower valuation than the discounted cash flow approach and transaction price approach.
[2] In determining the inputs, management evaluates a variety of factors including economic conditions, industry and market developments, market valuations of comparable companies, and company-specific developments including exit strategies and realization opportunities. The Manager has determined that market participants would take these inputs into account when valuing the investments. Inputs include unlevered discount rate for certain Infrastructure Assets.
[3] Inputs are weighted based on fair value of the investments included in the range.
[4] The directional change from an increase in the weight ascribed to the transaction price would increase the fair value of the Level III investments if the transaction price results in a higher valuation than the market comparables approach and discounted cash flow approach. The opposite would be true if the transaction price results in a lower valuation than the market comparables approach and discounted cash flow approach.
[5] Unless otherwise noted, this column represents the directional change in the fair value of the Level III investments that would result from an increase to the corresponding unobservable input. A decrease to the unobservable input would have the opposite effect. Significant increases and decreases in these inputs in isolation could result in significantly higher or lower fair value measurements.