Fair Value Measurement - Summarize the Fair Value Measurement Inputs and Valuation Techniques (Detail) - Fair Value, Inputs, Level 3 [Member] - USD ($)	6 Months Ended	12 Months Ended
Jun. 30, 2026	Dec. 31, 2025
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair value	$ 1,905,708,975	$ 1,824,666,883
Market Yield Analysis [Member] \| First Lien Senior Secured Debt [Member] \| Senior Debt Obligations [Member] \| Measurement Input, Commodity Market Price [Member] \| Decrease [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair value	$ 1,804,140,660	$ 1,684,703,626
Market Yield Analysis [Member] \| First Lien Senior Secured Debt [Member] \| Senior Debt Obligations [Member] \| Measurement Input, Commodity Market Price [Member] \| Decrease [Member] \| Minimum [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Description of Weighted Averages Input on Fair Value of Investments	7.9	7.4
Market Yield Analysis [Member] \| First Lien Senior Secured Debt [Member] \| Senior Debt Obligations [Member] \| Measurement Input, Commodity Market Price [Member] \| Decrease [Member] \| Maximum [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Description of Weighted Averages Input on Fair Value of Investments	25.5	20.0
Market Yield Analysis [Member] \| First Lien Senior Secured Debt [Member] \| Senior Debt Obligations [Member] \| Measurement Input, Commodity Market Price [Member] \| Decrease [Member] \| Weighted Average [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Description of Weighted Averages Input on Fair Value of Investments	(10.3	9.2
Market Yield Analysis [Member] \| Second Lien Junior Secured Debt [Member] \| Senior Debt Obligations [Member] \| Measurement Input, Commodity Market Price [Member] \| Decrease [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair value	$ 1,901,860	$ 2,574,947
Description of Weighted Averages Input on Fair Value of Investments	34.6
Market Yield Analysis [Member] \| Second Lien Junior Secured Debt [Member] \| Senior Debt Obligations [Member] \| Measurement Input, Commodity Market Price [Member] \| Decrease [Member] \| Maximum [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Description of Weighted Averages Input on Fair Value of Investments		20.8
Market Yield Analysis [Member] \| Equity Funds [Member] \| Preferred Stock [Member] \| Measurement Input, Commodity Market Price [Member] \| Decrease [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair value		$ 2,423,902
Market Yield Analysis [Member] \| Equity Funds [Member] \| Preferred Stock [Member] \| Measurement Input, Commodity Market Price [Member] \| Decrease [Member] \| Maximum [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Description of Weighted Averages Input on Fair Value of Investments		25.4
Market Yield Analysis [Member] \| Equity Funds [Member] \| Preferred Stock [Member] \| Measurement Input, Commodity Market Price [Member] \| Increase [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair value	$ 2,862,237
Market Yield Analysis [Member] \| Equity Funds [Member] \| Preferred Stock [Member] \| Measurement Input, Commodity Market Price [Member] \| Increase [Member] \| Minimum [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Description of Weighted Averages Input on Fair Value of Investments	21.9
Market Yield Analysis [Member] \| Equity Funds [Member] \| Preferred Stock [Member] \| Measurement Input, Commodity Market Price [Member] \| Increase [Member] \| Maximum [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Description of Weighted Averages Input on Fair Value of Investments	37.1
Market Yield Analysis [Member] \| Equity Funds [Member] \| Preferred Stock [Member] \| Measurement Input, Commodity Market Price [Member] \| Increase [Member] \| Weighted Average [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Description of Weighted Averages Input on Fair Value of Investments	(31.4
Market Yield Analysis [Member] \| Equity Funds [Member] \| Preferred Stock [Member] \| Dividend Yield [Member] \| Decrease [Member] \| Minimum [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Description of Weighted Averages Input on Fair Value of Investments		17.4
Market Yield Analysis [Member] \| Equity Funds [Member] \| Common Stocks and LP Interests [Member] \| Measurement Input, Commodity Market Price [Member] \| Decrease [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair value	$ 550,257	$ 527,494
Description of Weighted Averages Input on Fair Value of Investments	14.6
Market Yield Analysis [Member] \| Equity Funds [Member] \| Common Stocks and LP Interests [Member] \| Measurement Input, Commodity Market Price [Member] \| Decrease [Member] \| Maximum [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Description of Weighted Averages Input on Fair Value of Investments		13.6
Discounted transaction price [Member] \| Equity Funds [Member] \| Preferred Stock [Member] \| Illiquidity Discount [Member] \| Decrease [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair value	$ 202,781	$ 236,313
Description of Weighted Averages Input on Fair Value of Investments	20.0	20.0
Discounted transaction price [Member] \| Equity Funds [Member] \| Common Stocks and LP Interests [Member] \| Illiquidity Discount [Member] \| Decrease [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair value	$ 370,053	$ 431,245
Description of Weighted Averages Input on Fair Value of Investments	20.0	20.0
Valuation, Market Approach [Member] \| First Lien Senior Secured Debt [Member] \| Senior Debt Obligations [Member] \| EBITDA Multiple [Member] \| Increase [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair value	$ 15,765,846	$ 21,899,935
Valuation, Market Approach [Member] \| First Lien Senior Secured Debt [Member] \| Senior Debt Obligations [Member] \| EBITDA Multiple [Member] \| Increase [Member] \| Minimum [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Description of Weighted Averages Input on Fair Value of Investments	5.8x	6.5x
Valuation, Market Approach [Member] \| First Lien Senior Secured Debt [Member] \| Senior Debt Obligations [Member] \| EBITDA Multiple [Member] \| Increase [Member] \| Maximum [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Description of Weighted Averages Input on Fair Value of Investments	7.0x	13.9
Valuation, Market Approach [Member] \| First Lien Senior Secured Debt [Member] \| Senior Debt Obligations [Member] \| EBITDA Multiple [Member] \| Increase [Member] \| Weighted Average [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Description of Weighted Averages Input on Fair Value of Investments	(6.6x	9.1
Valuation, Market Approach [Member] \| First Lien Senior Secured Debt [Member] \| Senior Debt Obligations [Member] \| Revenue Multiple [Member] \| Increase [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair value	$ 7,298,359
Valuation, Market Approach [Member] \| First Lien Senior Secured Debt [Member] \| Senior Debt Obligations [Member] \| Revenue Multiple [Member] \| Increase [Member] \| Minimum [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Description of Weighted Averages Input on Fair Value of Investments	0.7x
Valuation, Market Approach [Member] \| First Lien Senior Secured Debt [Member] \| Senior Debt Obligations [Member] \| Revenue Multiple [Member] \| Increase [Member] \| Maximum [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Description of Weighted Averages Input on Fair Value of Investments	0.9x
Valuation, Market Approach [Member] \| First Lien Senior Secured Debt [Member] \| Senior Debt Obligations [Member] \| Revenue Multiple [Member] \| Increase [Member] \| Weighted Average [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Description of Weighted Averages Input on Fair Value of Investments	(0.7x
Valuation, Market Approach [Member] \| Equity Funds [Member] \| Preferred Stock [Member] \| EBITDA Multiple [Member] \| Increase [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair value	$ 1,280,154	$ 2,843,303
Valuation, Market Approach [Member] \| Equity Funds [Member] \| Preferred Stock [Member] \| EBITDA Multiple [Member] \| Increase [Member] \| Minimum [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Description of Weighted Averages Input on Fair Value of Investments	8.0x	3.0x
Valuation, Market Approach [Member] \| Equity Funds [Member] \| Preferred Stock [Member] \| EBITDA Multiple [Member] \| Increase [Member] \| Maximum [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Description of Weighted Averages Input on Fair Value of Investments	18.8x	8.0
Valuation, Market Approach [Member] \| Equity Funds [Member] \| Preferred Stock [Member] \| EBITDA Multiple [Member] \| Increase [Member] \| Weighted Average [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Description of Weighted Averages Input on Fair Value of Investments	(13.2x	6.5
Valuation, Market Approach [Member] \| Equity Funds [Member] \| Preferred Stock [Member] \| Revenue Multiple [Member] \| Increase [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair value	$ 3,279,402	$ 2,624,917
Valuation, Market Approach [Member] \| Equity Funds [Member] \| Preferred Stock [Member] \| Revenue Multiple [Member] \| Increase [Member] \| Minimum [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Description of Weighted Averages Input on Fair Value of Investments	2.0x	10.5x
Valuation, Market Approach [Member] \| Equity Funds [Member] \| Preferred Stock [Member] \| Revenue Multiple [Member] \| Increase [Member] \| Maximum [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Description of Weighted Averages Input on Fair Value of Investments	12.0x	23.0x
Valuation, Market Approach [Member] \| Equity Funds [Member] \| Preferred Stock [Member] \| Revenue Multiple [Member] \| Increase [Member] \| Weighted Average [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Description of Weighted Averages Input on Fair Value of Investments	(8.7x	17.2
Valuation, Market Approach [Member] \| Equity Funds [Member] \| Common Stocks and LP Interests [Member] \| NCF Multiple [Member] \| Increase [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair value	$ 87,261
Description of Weighted Averages Input on Fair Value of Investments	14.1x
Valuation, Market Approach [Member] \| Equity Funds [Member] \| Common Stocks and LP Interests [Member] \| EBITDA Multiple [Member] \| Increase [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair value	$ 4,970,852	$ 6,027,489
Valuation, Market Approach [Member] \| Equity Funds [Member] \| Common Stocks and LP Interests [Member] \| EBITDA Multiple [Member] \| Increase [Member] \| Minimum [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Description of Weighted Averages Input on Fair Value of Investments	6.8x	6.8x
Valuation, Market Approach [Member] \| Equity Funds [Member] \| Common Stocks and LP Interests [Member] \| EBITDA Multiple [Member] \| Increase [Member] \| Maximum [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Description of Weighted Averages Input on Fair Value of Investments	20.0x	24.3x
Valuation, Market Approach [Member] \| Equity Funds [Member] \| Common Stocks and LP Interests [Member] \| EBITDA Multiple [Member] \| Increase [Member] \| Weighted Average [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Description of Weighted Averages Input on Fair Value of Investments	(13.8x	15.1
Valuation, Market Approach [Member] \| Equity Funds [Member] \| Common Stocks and LP Interests [Member] \| Revenue Multiple [Member] \| Increase [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair value	$ 1,406,175	$ 1,520,631
Valuation, Market Approach [Member] \| Equity Funds [Member] \| Common Stocks and LP Interests [Member] \| Revenue Multiple [Member] \| Increase [Member] \| Minimum [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Description of Weighted Averages Input on Fair Value of Investments	5.0x	6.0x
Valuation, Market Approach [Member] \| Equity Funds [Member] \| Common Stocks and LP Interests [Member] \| Revenue Multiple [Member] \| Increase [Member] \| Maximum [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Description of Weighted Averages Input on Fair Value of Investments	22.0x	21.0x
Valuation, Market Approach [Member] \| Equity Funds [Member] \| Common Stocks and LP Interests [Member] \| Revenue Multiple [Member] \| Increase [Member] \| Weighted Average [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Description of Weighted Averages Input on Fair Value of Investments	(9.9x	9.4
Valuation, Market Approach [Member] \| Equity Funds [Member] \| Common Stocks and LP Interests [Member] \| Other Cashflow Multiple [Member] \| Increase [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair value		$ 161,369
Valuation, Market Approach [Member] \| Equity Funds [Member] \| Warrant [Member] \| Revenue Multiple [Member] \| Increase [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair value	$ 3,141,339	$ 2,102,100
Valuation, Market Approach [Member] \| Equity Funds [Member] \| Warrant [Member] \| Revenue Multiple [Member] \| Increase [Member] \| Minimum [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Description of Weighted Averages Input on Fair Value of Investments	3.0x	4.5x
Valuation, Market Approach [Member] \| Equity Funds [Member] \| Warrant [Member] \| Revenue Multiple [Member] \| Increase [Member] \| Maximum [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Description of Weighted Averages Input on Fair Value of Investments	12.0x	8.0x
Valuation, Market Approach [Member] \| Equity Funds [Member] \| Warrant [Member] \| Revenue Multiple [Member] \| Increase [Member] \| Weighted Average [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Description of Weighted Averages Input on Fair Value of Investments	(11.3x	7.6
Market Approach One [Member] \| Equity Funds [Member] \| Common Stocks and LP Interests [Member] \| EBITDA Multiple [Member] \| Increase [Member] \| Maximum [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Description of Weighted Averages Input on Fair Value of Investments		15.7x
Liquidation Value [Member] \| First Lien Senior Secured Debt [Member] \| Senior Debt Obligations [Member] \| Asset Value [Member] \| Increase [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair value		$ 1,263,258
Liquidation Value [Member] \| First Lien Senior Secured Debt [Member] \| Senior Debt Obligations [Member] \| Recovery Rate [Member] \| Increase [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair value	$ 650,018
Liquidation Value [Member] \| First Lien Senior Secured Debt [Member] \| Senior Debt Obligations [Member] \| Recovery Rate [Member] \| Increase [Member] \| Minimum [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Description of Weighted Averages Input on Fair Value of Investments	1.0	1.0
Liquidation Value [Member] \| First Lien Senior Secured Debt [Member] \| Senior Debt Obligations [Member] \| Recovery Rate [Member] \| Increase [Member] \| Maximum [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Description of Weighted Averages Input on Fair Value of Investments	16.2	32.2
Liquidation Value [Member] \| First Lien Senior Secured Debt [Member] \| Senior Debt Obligations [Member] \| Recovery Rate [Member] \| Increase [Member] \| Weighted Average [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Description of Weighted Averages Input on Fair Value of Investments	(15.5	31.5
Expected Repayment [Member] \| Equity Funds [Member] \| Common Stocks and LP Interests [Member] \| Escrow Valuation [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair value	$ 7,191	$ 9,525
Recent Purchase [Member] \| First Lien Senior Secured Debt [Member] \| Senior Debt Obligations [Member] \| Purchase Price [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair value	57,011,387	93,576,469
Recent Purchase [Member] \| First Lien Senior Secured Debt [Member] \| Senior Debt Obligations [Member] \| Transaction Price [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair value		785,893
Recent Purchase [Member] \| Equity Funds [Member] \| Common Stocks and LP Interests [Member] \| Purchase Price [Member] \| Increase [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair value		$ 954,467
Recent Transaction [Member] \| First Lien Senior Secured Debt [Member] \| Senior Debt Obligations [Member] \| Transaction Price [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair value	$ 783,143

Fair Value Measurement - Summarize the Fair Value Measurement Inputs and Valuation Techniques (Detail) - Fair Value, Inputs, Level 3 [Member] - USD ($)