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Commitments and Contingencies - Additional Information (Details) - USD ($)
 3 Months Ended 12 Months Ended
Dec. 31, 2022
Sep. 30, 2022
Commitments And Contingencies Disclosure [Line Items]    
Commitments to fund investments $ 151,400,000 $ 150,600,000
Maximum    
Commitments And Contingencies Disclosure [Line Items]    
Unfunded commitments   $ 28,400,000
Minimum    
Commitments And Contingencies Disclosure [Line Items]    
Unfunded commitments $ 15,300,000