v3.26.1
Fair Value of Financial Instruments - Summary of Significant Unobservable Inputs Used to Measure The Fair Value Of The Level 3 Portfolio Investments (Details) - Significant Unobservable Inputs (Level 3)
$ in Thousands
Mar. 31, 2026
USD ($)
yr
Dec. 31, 2025
USD ($)
yr
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]    
Total Level 3 Investments $ 2,450,836 $ 2,386,232
Debt investments | Discounted Cash Flows | Hypothetical Market Yield    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]    
Total Level 3 Investments $ 1,823,352 $ 1,682,044
Debt investments | Discounted Cash Flows | Minimum | Hypothetical Market Yield    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]    
Range 0.057 0.038
Debt investments | Discounted Cash Flows | Maximum | Hypothetical Market Yield    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]    
Range 0.32 0.365
Debt investments | Discounted Cash Flows | Weighted Average | Hypothetical Market Yield    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]    
Range 0.138 0.142
Debt investments | Cost approximates fair value    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]    
Total Level 3 Investments $ 307,369 $ 442,889
Debt investments | Scenario Analysis | Probability Weighting of Alternative Outcomes    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]    
Total Level 3 Investments $ 38,528 $ 39,888
Debt investments | Scenario Analysis | Minimum | Probability Weighting of Alternative Outcomes    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]    
Range 0.10 0.10
Debt investments | Scenario Analysis | Maximum | Probability Weighting of Alternative Outcomes    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]    
Range 0.90 0.85
Debt investments | Enterprise Value    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]    
Total Level 3 Investments $ 12,885 $ 12,885
Debt investments | Transaction Precedent    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]    
Total Level 3 Investments   22,258
Equity investments | Discounted Cash Flows | Hypothetical Market Yield    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]    
Total Level 3 Investments $ 22,714  
Equity investments | Discounted Cash Flows | Minimum | Hypothetical Market Yield    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]    
Range | yr 13.8  
Equity investments | Discounted Cash Flows | Maximum | Hypothetical Market Yield    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]    
Range | yr 14.8  
Equity investments | Discounted Cash Flows | Weighted Average | Hypothetical Market Yield    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]    
Range | yr 14.2  
Equity investments | Cost approximates fair value    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]    
Total Level 3 Investments $ 12,804 26,300
Equity investments | Market Approach | Revenue Multiple    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]    
Total Level 3 Investments $ 114,599 $ 82,042
Equity investments | Market Approach | Minimum | Revenue Multiple    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]    
Range 0.003 0.003
Equity investments | Market Approach | Minimum | Volatility    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]    
Range 0.392 0.402
Equity investments | Market Approach | Minimum | Risk-Free Interest Rate    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]    
Range 0.038 3.5
Equity investments | Market Approach | Minimum | Estimated Time to Exit (in years)    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]    
Range | yr 1.8 0.5
Equity investments | Market Approach | Maximum | Revenue Multiple    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]    
Range 0.49 0.475
Equity investments | Market Approach | Maximum | Volatility    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]    
Range 1.103 1.056
Equity investments | Market Approach | Maximum | Risk-Free Interest Rate    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]    
Range 0.039 3.6
Equity investments | Market Approach | Maximum | Estimated Time to Exit (in years)    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]    
Range | yr 4.8 3.8
Equity investments | Market Approach | Weighted Average | Revenue Multiple    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]    
Range 0.037 0.041
Equity investments | Market Approach | Weighted Average | Volatility    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]    
Range 0.545 0.534
Equity investments | Market Approach | Weighted Average | Risk-Free Interest Rate    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]    
Range 0.038 3.5
Equity investments | Market Approach | Weighted Average | Estimated Time to Exit (in years)    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]    
Range | yr 3 2.4
Warrants | Market Approach | Revenue Multiple    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]    
Total Level 3 Investments $ 68,825 $ 74,533
Warrants | Market Approach | Minimum | Revenue Multiple    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]    
Range 0.001 0.001
Warrants | Market Approach | Minimum | Volatility    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]    
Range 0.361 0.355
Warrants | Market Approach | Minimum | Risk-Free Interest Rate    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]    
Range 0.038 3.5
Warrants | Market Approach | Minimum | Estimated Time to Exit (in years)    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]    
Range | yr 1.8 1
Warrants | Market Approach | Maximum | Revenue Multiple    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]    
Range 0.49 0.475
Warrants | Market Approach | Maximum | Volatility    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]    
Range 1.466 1.409
Warrants | Market Approach | Maximum | Risk-Free Interest Rate    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]    
Range 0.039 3.9
Warrants | Market Approach | Maximum | Estimated Time to Exit (in years)    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]    
Range | yr 4.3 4.5
Warrants | Market Approach | Weighted Average | Revenue Multiple    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]    
Range 0.044 0.104
Warrants | Market Approach | Weighted Average | Volatility    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]    
Range 0.653 0.599
Warrants | Market Approach | Weighted Average | Risk-Free Interest Rate    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]    
Range 0.038 3.5
Warrants | Market Approach | Weighted Average | Estimated Time to Exit (in years)    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]    
Range | yr 2.9 2.4
Warrants | Transaction Precedent | Transaction Price    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]    
Total Level 3 Investments $ 47,379  
Warrants | Black Scholes | Volatility    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]    
Total Level 3 Investments $ 2,381 $ 3,393
Warrants | Black Scholes | Minimum | Volatility    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]    
Range 60.4 61.2
Warrants | Black Scholes | Minimum | Risk-Free Interest Rate    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]    
Range 3.9 0.037
Warrants | Black Scholes | Minimum | Estimated Time to Exit (in years)    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]    
Range 4.4 0.047
Warrants | Black Scholes | Maximum | Volatility    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]    
Range 125.1 128
Warrants | Black Scholes | Maximum | Risk-Free Interest Rate    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]    
Range 4.3 0.042
Warrants | Black Scholes | Maximum | Estimated Time to Exit (in years)    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]    
Range 9.5 0.098
Warrants | Black Scholes | Weighted Average | Volatility    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]    
Range 0.922 0.904
Warrants | Black Scholes | Weighted Average | Risk-Free Interest Rate    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]    
Range 4.1 0.04
Warrants | Black Scholes | Weighted Average | Estimated Time to Exit (in years)    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]    
Range 7.9 0.078