v3.25.2
Portfolio Investments - Schedule of Composition of Investments (Details) - USD ($)
$ in Thousands
Jun. 30, 2025
Sep. 30, 2024
Schedule of Investments [Line Items]    
Fair Value $ 6,330,887 $ 4,550,029
% of Debt Investments 100.00% 100.00%
Floating rate    
Schedule of Investments [Line Items]    
Fair Value $ 5,904,288 $ 4,184,708
% of Debt Investments 93.26% 91.97%
Fixed rate    
Schedule of Investments [Line Items]    
Fair Value $ 426,599 $ 365,321
% of Debt Investments 6.74% 8.03%