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Commitments and Contingencies - Additional Information (Details) - USD ($)
$ in Millions
3 Months Ended 12 Months Ended
Dec. 31, 2024
Sep. 30, 2024
Commitments And Contingencies Disclosure [Line Items]    
Commitments to fund investments $ 695.8 $ 632.2
Maximum    
Commitments And Contingencies Disclosure [Line Items]    
Unfunded commitments $ 87.5 $ 0.0