v3.26.1
Investments - Additional Information (Details) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Dec. 31, 2025
Schedule of Investments [Line Items]          
Investments in loans at fair value $ 872,800 [1],[2],[3]   $ 872,800 [1],[2],[3]   $ 874,196 [4],[5],[6],[7]
Fair Value $ 836,632 [1],[3]   $ 836,632 [1],[3]   $ 849,354 [4],[5],[7]
Amortized Cost Percentage 100.00%   100.00%   100.00%
Fair Value Percentage 100.00%   100.00%   100.00%
Percentage of Net Assets ^ 224.40% [1],[3],[8]   224.40% [1],[3],[8]   221.43% [4],[5],[7],[9]
SOFR          
Schedule of Investments [Line Items]          
Interest rate 8.00%   8.00%    
Senior Direct Lending Program          
Schedule of Investments [Line Items]          
Funded commitments $ 188,900   $ 188,900   $ 183,600
Unfunded commitments 17,400   17,400   22,700
Investments in loans at fair value 4,465,856   4,465,856   4,304,749
Fair Value 4,309,053 [10]   4,309,053 [10]   4,158,859 [11]
Investment Yield In Subordinated Certificates          
Schedule of Investments [Line Items]          
Investments in loans at fair value 183,400   183,400   178,000
Fair Value 171,900   171,900   165,700
Interest income 5,100 $ 5,400 10,300 $ 10,900  
Interest receivable $ 5,100   $ 5,100   $ 5,300
Amortized Cost Percentage 11.30%   11.30%   11.80%
Fair Value Percentage 12.00%   12.00%   12.60%
Minimum | Rule 3-09          
Schedule of Investments [Line Items]          
Amortized Cost Percentage 50.00%   50.00%    
Fair Value Percentage 20.00%   20.00%    
Percentage of Net Assets ^ 20.00%   20.00%    
Fair value of subsidiary, percentage 5.00%   5.00%    
Minimum | Rule 4-08          
Schedule of Investments [Line Items]          
Amortized Cost Percentage 25.00%   25.00%    
Fair Value Percentage 10.00%   10.00%    
Percentage of Net Assets ^ 10.00%   10.00%    
Fair value of subsidiary, percentage 5.00%   5.00%    
Minimum | Senior Direct Lending Program          
Schedule of Investments [Line Items]          
Fair Value Percentage 20.00%   20.00%    
Maximum | Rule 3-09          
Schedule of Investments [Line Items]          
Percentage of Net Assets ^ 80.00%   80.00%    
Maximum | Rule 4-08          
Schedule of Investments [Line Items]          
Percentage of Net Assets ^ 80.00%   80.00%    
Ares Capital Corporation | Senior Direct Lending Program          
Schedule of Investments [Line Items]          
Fair Value $ 1,700,000   $ 1,700,000   $ 1,700,000
Ares Capital Corporation | Minimum          
Schedule of Investments [Line Items]          
Investment owned, percent of outstanding 12.50%   12.50%    
Ares Capital Corporation | Maximum          
Schedule of Investments [Line Items]          
Investment owned, percent of outstanding         87.50%
Varagon SDLP, LLC | Senior Direct Lending Program          
Schedule of Investments [Line Items]          
Fair Value $ 206,300   $ 206,300   $ 206,300
[1]

# Unless otherwise indicated, all securities are valued using significant unobservable inputs, which are categorized as Level 3 assets under the definition of ASC 820 fair value hierarchy (See "Note 4. Fair Value Measurements").
[2]

(++) Negative cost, if applicable, results from unamortized fees on unfunded commitments, which are capitalized to the investment cost. The negative fair value, if applicable, results from the fair valuation of the unfunded commitment.
[3] + All of the issuers of the investments held by the Company are domiciled in the United States. Certain investments also have international operations.
[4]

# Unless otherwise indicated, all securities are valued using significant unobservable inputs, which are categorized as Level 3 assets under the definition of ASC 820 fair value hierarchy (See "Note 4. Fair Value Measurements").
[5]

(+) Controlled Investments are defined by the Investment Company Act of 1940 Act, as amended (the "1940 Act"), as investments in companies in which the Company owns more than 25% of the voting securities or maintains greater than 50% of the board representation.
[6]

(++) Negative cost, if applicable, results from unamortized fees on unfunded commitments, which are capitalized to the investment cost. The negative fair value, if applicable, results from the fair valuation of the unfunded commitment.
[7] + All of the issuers of the investments held by the Company are domiciled in the United States. Certain investments also have international operations.
[8]

^ Percentage is based on net assets of $372,838 as of June 30, 2026.
[9]

^ Percentage is based on net assets of $383,569 as of December 31, 2025.
[10]

(4) The negative fair value, if applicable, results from the fair valuation of the unfunded commitment.
[11]

(4) The negative fair value, if applicable, results from the fair valuation of the unfunded commitment.