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Significant Accounting Policies - Additional Information (Details)
$ in Millions
 12 Months Ended
Dec. 31, 2023
USD ($)
DebtInvestment
InvesteeCompany
Dec. 31, 2022
USD ($)
InvesteeCompany
Summary Of Significant Accounting Policies [Line Items]    
Amount provided to portfolio companies $ 44.6 $ 200.1
Amount provided to portfolio companies contractually obligated $ 11.8 $ 30.1
Number of investee companies where loans held | InvesteeCompany 80 96
Aggregate principal amount of loans held $ 420.9 $ 518.4
Percentage of investment portfolio valuation 100.00%  
Number of debt investments on non-accrual status | DebtInvestment 7