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CLO Transaction and Continuation Vehicle Transaction - Additional Information (Details) - BlackRock DLF-C 2026 - USD ($)
9 Months Ended 12 Months Ended
Aug. 04, 2026
Sep. 30, 2026
Dec. 31, 2025
May 27, 2026
Collateralized Loan Obligation And Transaction [Line Items]        
Equity method investment, description On August 4, 2026, SVCP sold 95% of the limited liability company interests in the CLO Retention Holder (the “Continuation Vehicle”) to investment funds and accounts managed by Pantheon Ventures (US) LP (the “New Investors”) and retained the remaining 5% interest. At closing, the Continuation Vehicle, directly and through the CLO Issuer, held approximately $524 million of loans to 78 portfolio companies. The Advisor serves as investment manager to the Continuation Vehicle without compensation.      
Collateralized Loan Obligations        
Collateralized Loan Obligation And Transaction [Line Items]        
Debt and equity interests transferred to collateralized loan obligation amount.       $ 535,800,000
Equity method investment ownership percentage 95.00%   95.00%  
Equity method investment ownership retained percentage 5.00% 5.00%    
Loss on deconsolidation   $ 56,400,000    
Loans to portfolio companies $ 524,000,000      
Gross proceeds     $ 152,300,000  
Collateralized Loan Obligations | Purchase Price.        
Collateralized Loan Obligation And Transaction [Line Items]        
Equity method investment ownership percentage     95.00%  
Collateralized Loan Obligations | Non-Controlled, Affiliated Investments        
Collateralized Loan Obligation And Transaction [Line Items]        
Equity method investment ownership retained percentage   5.00%    
Equity method investment, fair value   $ 10,842,711