v3.26.3
Fair Value of Financial Instruments - Schedule of Quantitative Information of Fair Value Measurements (Details)
$ in Thousands
Sep. 30, 2026
USD ($)
Dec. 31, 2025
USD ($)
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]    
Investments $ 4,839,101 $ 4,459,584
Warrants    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]    
Investments 46,290 41,162
Significant Unobservable Inputs (Level 3)    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]    
Investments 4,799,527 4,424,928
Significant Unobservable Inputs (Level 3) | Total Level 3 Debt Investments and Other Assets (Liabilities)    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]    
Investments 4,646,572 4,279,493
Significant Unobservable Inputs (Level 3) | Debt investments    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]    
Investments 4,645,977 4,279,412
Significant Unobservable Inputs (Level 3) | Debt investments | Debt Investments originated within 6 months    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]    
Investments 328,972 403,710
Significant Unobservable Inputs (Level 3) | Debt investments | Imminent Payoffs    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]    
Investments 128,789 7,711
Significant Unobservable Inputs (Level 3) | Debt investments | Debt Investments Maturing in Less than One Year    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]    
Investments 219,903 248,601
Significant Unobservable Inputs (Level 3) | Debt investments | Debt Investments in Wholly-Owned Subsidiaries    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]    
Investments 46,357 38,255
Significant Unobservable Inputs (Level 3) | Escrow Receivables | Expected Proceeds    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]    
Investments 686 168
Significant Unobservable Inputs (Level 3) | Accounts Payable and Accrued Liabilities | Liquidation    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]    
Investments $ (91) $ (87)
Significant Unobservable Inputs (Level 3) | Accounts Payable and Accrued Liabilities | Liquidation | Minimum | Probability weighting of alternative outcomes    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]    
Investment company, investment owned, measurement input 0.1000 0.1000
Significant Unobservable Inputs (Level 3) | Accounts Payable and Accrued Liabilities | Liquidation | Maximum | Probability weighting of alternative outcomes    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]    
Investment company, investment owned, measurement input 0.5000 0.5000
Significant Unobservable Inputs (Level 3) | Accounts Payable and Accrued Liabilities | Liquidation | Weighted Average | Probability weighting of alternative outcomes    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]    
Investment company, investment owned, measurement input 0.4484 0.4484
Significant Unobservable Inputs (Level 3) | Equity Investments | Market Comparable Companies    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]    
Investments $ 46,402 $ 48,874
Significant Unobservable Inputs (Level 3) | Equity Investments | Market Comparable Companies | Minimum | Revenue Multiple    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]    
Investment company, investment owned, measurement input 0.2 0.1
Significant Unobservable Inputs (Level 3) | Equity Investments | Market Comparable Companies | Minimum | Tangible Book Value Multiple    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]    
Investment company, investment owned, measurement input 1.6 1.7
Significant Unobservable Inputs (Level 3) | Equity Investments | Market Comparable Companies | Minimum | Discount for Lack of Marketability    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]    
Investment company, investment owned, measurement input 0.1637 0.0944
Significant Unobservable Inputs (Level 3) | Equity Investments | Market Comparable Companies | Maximum | Revenue Multiple    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]    
Investment company, investment owned, measurement input 11.8 12.3
Significant Unobservable Inputs (Level 3) | Equity Investments | Market Comparable Companies | Maximum | Tangible Book Value Multiple    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]    
Investment company, investment owned, measurement input 1.6 1.7
Significant Unobservable Inputs (Level 3) | Equity Investments | Market Comparable Companies | Maximum | Discount for Lack of Marketability    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]    
Investment company, investment owned, measurement input 0.8750 0.9230
Significant Unobservable Inputs (Level 3) | Equity Investments | Market Comparable Companies | Weighted Average | Revenue Multiple    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]    
Investment company, investment owned, measurement input 4.3 4.5
Significant Unobservable Inputs (Level 3) | Equity Investments | Market Comparable Companies | Weighted Average | Tangible Book Value Multiple    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]    
Investment company, investment owned, measurement input 1.6 1.7
Significant Unobservable Inputs (Level 3) | Equity Investments | Market Comparable Companies | Weighted Average | Discount for Lack of Marketability    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]    
Investment company, investment owned, measurement input 0.2645 0.2625
Significant Unobservable Inputs (Level 3) | Equity Investments | Market Adjusted OPM Backsolve    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]    
Investments $ 19,154 $ 7,702
Significant Unobservable Inputs (Level 3) | Equity Investments | Market Adjusted OPM Backsolve | Minimum | Market Equity Adjustment    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]    
Investment company, investment owned, measurement input (0.9086) (0.8931)
Significant Unobservable Inputs (Level 3) | Equity Investments | Market Adjusted OPM Backsolve | Maximum | Market Equity Adjustment    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]    
Investment company, investment owned, measurement input 0.1229 0.7057
Significant Unobservable Inputs (Level 3) | Equity Investments | Market Adjusted OPM Backsolve | Weighted Average | Market Equity Adjustment    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]    
Investment company, investment owned, measurement input (0.0988) (0.0713)
Significant Unobservable Inputs (Level 3) | Equity Investments | Discounted Cash Flow    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]    
Investments $ 33,892 $ 51,250
Significant Unobservable Inputs (Level 3) | Equity Investments | Discounted Cash Flow | Minimum | Discount Rate    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]    
Investment company, investment owned, measurement input 0.1198 0.1114
Significant Unobservable Inputs (Level 3) | Equity Investments | Discounted Cash Flow | Maximum | Discount Rate    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]    
Investment company, investment owned, measurement input 0.3607 0.3318
Significant Unobservable Inputs (Level 3) | Equity Investments | Discounted Cash Flow | Weighted Average | Discount Rate    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]    
Investment company, investment owned, measurement input 0.3358 0.3009
Significant Unobservable Inputs (Level 3) | Equity Investments | Other    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]    
Investments $ 17,291 $ 9,629
Significant Unobservable Inputs (Level 3) | Warrants    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]    
Investments 36,811 28,061
Significant Unobservable Inputs (Level 3) | Warrants | Market Comparable Companies    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]    
Investments $ 20,836 $ 19,318
Significant Unobservable Inputs (Level 3) | Warrants | Market Comparable Companies | Minimum | Revenue Multiple    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]    
Investment company, investment owned, measurement input 0.2 0.3
Significant Unobservable Inputs (Level 3) | Warrants | Market Comparable Companies | Minimum | Discount for Lack of Marketability    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]    
Investment company, investment owned, measurement input 0.1491 0.1328
Significant Unobservable Inputs (Level 3) | Warrants | Market Comparable Companies | Maximum | Revenue Multiple    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]    
Investment company, investment owned, measurement input 13.2 13.0
Significant Unobservable Inputs (Level 3) | Warrants | Market Comparable Companies | Maximum | Discount for Lack of Marketability    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]    
Investment company, investment owned, measurement input 0.6088 0.3640
Significant Unobservable Inputs (Level 3) | Warrants | Market Comparable Companies | Weighted Average | Revenue Multiple    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]    
Investment company, investment owned, measurement input 3.5 5.5
Significant Unobservable Inputs (Level 3) | Warrants | Market Comparable Companies | Weighted Average | Discount for Lack of Marketability    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]    
Investment company, investment owned, measurement input 0.2411 0.2690
Significant Unobservable Inputs (Level 3) | Warrants | Market Adjusted OPM Backsolve    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]    
Investments $ 15,975 $ 8,283
Significant Unobservable Inputs (Level 3) | Warrants | Market Adjusted OPM Backsolve | Minimum | Market Equity Adjustment    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]    
Investment company, investment owned, measurement input (0.5788) (0.6090)
Significant Unobservable Inputs (Level 3) | Warrants | Market Adjusted OPM Backsolve | Maximum | Market Equity Adjustment    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]    
Investment company, investment owned, measurement input 1.4752 0.8740
Significant Unobservable Inputs (Level 3) | Warrants | Market Adjusted OPM Backsolve | Weighted Average | Market Equity Adjustment    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]    
Investment company, investment owned, measurement input 0.3111 0.2666
Significant Unobservable Inputs (Level 3) | Warrants | Other    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]    
Investments   $ 460
Significant Unobservable Inputs (Level 3) | Equity and Warrant Investments    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]    
Investments $ 153,550 145,516
Pharmaceuticals | Significant Unobservable Inputs (Level 3) | Debt investments | Market Comparable Companies    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]    
Investments $ 851,395 $ 777,671
Pharmaceuticals | Significant Unobservable Inputs (Level 3) | Debt investments | Market Comparable Companies | Minimum | Hypothetical Market Yield    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]    
Investment company, investment owned, measurement input 0.0807 0.0901
Pharmaceuticals | Significant Unobservable Inputs (Level 3) | Debt investments | Market Comparable Companies | Minimum | Premium/(Discount)    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]    
Investment company, investment owned, measurement input (0.0200) (0.0250)
Pharmaceuticals | Significant Unobservable Inputs (Level 3) | Debt investments | Market Comparable Companies | Maximum | Hypothetical Market Yield    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]    
Investment company, investment owned, measurement input 0.1748 0.1539
Pharmaceuticals | Significant Unobservable Inputs (Level 3) | Debt investments | Market Comparable Companies | Maximum | Premium/(Discount)    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]    
Investment company, investment owned, measurement input 0.0200 0.0200
Pharmaceuticals | Significant Unobservable Inputs (Level 3) | Debt investments | Market Comparable Companies | Weighted Average | Hypothetical Market Yield    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]    
Investment company, investment owned, measurement input 0.1143 0.1197
Pharmaceuticals | Significant Unobservable Inputs (Level 3) | Debt investments | Market Comparable Companies | Weighted Average | Premium/(Discount)    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]    
Investment company, investment owned, measurement input (0.0017) (0.0034)
Technology | Significant Unobservable Inputs (Level 3) | Debt investments | Market Comparable Companies    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]    
Investments $ 1,945,189 $ 1,779,826
Technology | Significant Unobservable Inputs (Level 3) | Debt investments | Market Comparable Companies | Minimum | Hypothetical Market Yield    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]    
Investment company, investment owned, measurement input 0.0884 0.0958
Technology | Significant Unobservable Inputs (Level 3) | Debt investments | Market Comparable Companies | Minimum | Premium/(Discount)    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]    
Investment company, investment owned, measurement input (0.0225) (0.0150)
Technology | Significant Unobservable Inputs (Level 3) | Debt investments | Market Comparable Companies | Maximum | Hypothetical Market Yield    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]    
Investment company, investment owned, measurement input 0.2074 0.1746
Technology | Significant Unobservable Inputs (Level 3) | Debt investments | Market Comparable Companies | Maximum | Premium/(Discount)    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]    
Investment company, investment owned, measurement input 0.0850 0.0450
Technology | Significant Unobservable Inputs (Level 3) | Debt investments | Market Comparable Companies | Weighted Average | Hypothetical Market Yield    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]    
Investment company, investment owned, measurement input 0.1213 0.1230
Technology | Significant Unobservable Inputs (Level 3) | Debt investments | Market Comparable Companies | Weighted Average | Premium/(Discount)    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]    
Investment company, investment owned, measurement input (0.0022) 0.0022
Technology | Significant Unobservable Inputs (Level 3) | Debt investments | Convertible Note Analysis    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]    
Investments $ 30,316 $ 30,986
Technology | Significant Unobservable Inputs (Level 3) | Debt investments | Convertible Note Analysis | Minimum | Hypothetical Market Yield    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]    
Investment company, investment owned, measurement input 0.2578  
Technology | Significant Unobservable Inputs (Level 3) | Debt investments | Convertible Note Analysis | Minimum | Probability weighting of alternative outcomes    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]    
Investment company, investment owned, measurement input   0.0100
Technology | Significant Unobservable Inputs (Level 3) | Debt investments | Convertible Note Analysis | Maximum | Hypothetical Market Yield    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]    
Investment company, investment owned, measurement input 0.2578  
Technology | Significant Unobservable Inputs (Level 3) | Debt investments | Convertible Note Analysis | Maximum | Probability weighting of alternative outcomes    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]    
Investment company, investment owned, measurement input   0.7000
Technology | Significant Unobservable Inputs (Level 3) | Debt investments | Convertible Note Analysis | Weighted Average | Hypothetical Market Yield    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]    
Investment company, investment owned, measurement input 0.2578  
Technology | Significant Unobservable Inputs (Level 3) | Debt investments | Convertible Note Analysis | Weighted Average | Probability weighting of alternative outcomes    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]    
Investment company, investment owned, measurement input   0.5123
Technology | Significant Unobservable Inputs (Level 3) | Debt investments | Liquidation    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]    
Investments $ 66,849 $ 73,268
Technology | Significant Unobservable Inputs (Level 3) | Debt investments | Liquidation | Minimum | Probability weighting of alternative outcomes    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]    
Investment company, investment owned, measurement input 0.1000 0.1000
Technology | Significant Unobservable Inputs (Level 3) | Debt investments | Liquidation | Maximum | Probability weighting of alternative outcomes    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]    
Investment company, investment owned, measurement input 0.6000 0.9000
Technology | Significant Unobservable Inputs (Level 3) | Debt investments | Liquidation | Weighted Average | Probability weighting of alternative outcomes    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]    
Investment company, investment owned, measurement input 0.4545 0.7629
Sustainable and Renewable Technology | Significant Unobservable Inputs (Level 3) | Debt investments | Market Comparable Companies    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]    
Investments   $ 30,201
Sustainable and Renewable Technology | Significant Unobservable Inputs (Level 3) | Debt investments | Market Comparable Companies | Minimum | Hypothetical Market Yield    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]    
Investment company, investment owned, measurement input   0.1589
Sustainable and Renewable Technology | Significant Unobservable Inputs (Level 3) | Debt investments | Market Comparable Companies | Minimum | Premium/(Discount)    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]    
Investment company, investment owned, measurement input   0.0075
Sustainable and Renewable Technology | Significant Unobservable Inputs (Level 3) | Debt investments | Market Comparable Companies | Maximum | Hypothetical Market Yield    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]    
Investment company, investment owned, measurement input   0.1625
Sustainable and Renewable Technology | Significant Unobservable Inputs (Level 3) | Debt investments | Market Comparable Companies | Maximum | Premium/(Discount)    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]    
Investment company, investment owned, measurement input   0.0075
Sustainable and Renewable Technology | Significant Unobservable Inputs (Level 3) | Debt investments | Market Comparable Companies | Weighted Average | Hypothetical Market Yield    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]    
Investment company, investment owned, measurement input   0.1604
Sustainable and Renewable Technology | Significant Unobservable Inputs (Level 3) | Debt investments | Market Comparable Companies | Weighted Average | Premium/(Discount)    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]    
Investment company, investment owned, measurement input   0.0075
Medical Devices | Significant Unobservable Inputs (Level 3) | Debt investments | Market Comparable Companies    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]    
Investments $ 96,121 $ 74,771
Medical Devices | Significant Unobservable Inputs (Level 3) | Debt investments | Market Comparable Companies | Minimum | Hypothetical Market Yield    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]    
Investment company, investment owned, measurement input 0.1156 0.1218
Medical Devices | Significant Unobservable Inputs (Level 3) | Debt investments | Market Comparable Companies | Minimum | Premium/(Discount)    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]    
Investment company, investment owned, measurement input (0.0050) (0.0025)
Medical Devices | Significant Unobservable Inputs (Level 3) | Debt investments | Market Comparable Companies | Maximum | Hypothetical Market Yield    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]    
Investment company, investment owned, measurement input 0.1517 0.1421
Medical Devices | Significant Unobservable Inputs (Level 3) | Debt investments | Market Comparable Companies | Maximum | Premium/(Discount)    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]    
Investment company, investment owned, measurement input 0.0150 0.0050
Medical Devices | Significant Unobservable Inputs (Level 3) | Debt investments | Market Comparable Companies | Weighted Average | Hypothetical Market Yield    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]    
Investment company, investment owned, measurement input 0.1241 0.1336
Medical Devices | Significant Unobservable Inputs (Level 3) | Debt investments | Market Comparable Companies | Weighted Average | Premium/(Discount)    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]    
Investment company, investment owned, measurement input (0.0006) 0.0011
Lower Middle Market | Significant Unobservable Inputs (Level 3) | Debt investments | Market Comparable Companies    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]    
Investments $ 932,086 $ 814,412
Lower Middle Market | Significant Unobservable Inputs (Level 3) | Debt investments | Market Comparable Companies | Minimum | Hypothetical Market Yield    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]    
Investment company, investment owned, measurement input 0.1105 0.1030
Lower Middle Market | Significant Unobservable Inputs (Level 3) | Debt investments | Market Comparable Companies | Minimum | Premium/(Discount)    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]    
Investment company, investment owned, measurement input (0.0100) (0.0050)
Lower Middle Market | Significant Unobservable Inputs (Level 3) | Debt investments | Market Comparable Companies | Maximum | Hypothetical Market Yield    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]    
Investment company, investment owned, measurement input 0.1788 0.1873
Lower Middle Market | Significant Unobservable Inputs (Level 3) | Debt investments | Market Comparable Companies | Maximum | Premium/(Discount)    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]    
Investment company, investment owned, measurement input 0.0300 0.0400
Lower Middle Market | Significant Unobservable Inputs (Level 3) | Debt investments | Market Comparable Companies | Weighted Average | Hypothetical Market Yield    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]    
Investment company, investment owned, measurement input 0.1327 0.1360
Lower Middle Market | Significant Unobservable Inputs (Level 3) | Debt investments | Market Comparable Companies | Weighted Average | Premium/(Discount)    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]    
Investment company, investment owned, measurement input 0.0054 0.0060