v3.26.1
Related Party Transactions (Details)
 3 Months Ended 7 Months Ended 9 Months Ended 12 Months Ended 62 Months Ended
Oct. 01, 2025
Jul. 01, 2024
Jan. 23, 2023
USD ($)
Mar. 19, 2021
USD ($)
Jun. 30, 2026
USD ($)
component
Jun. 30, 2025
USD ($)
Jun. 30, 2024
USD ($)
Mar. 31, 2024
USD ($)
Jan. 23, 2025
USD ($)
Jun. 30, 2026
USD ($)
component
Jun. 30, 2025
USD ($)
Sep. 30, 2025
USD ($)
Jun. 30, 2024
Related Party Transaction [Line Items]                          
Base management fee and incentive fee payable         $ 9,400,000         $ 9,400,000   $ 12,500,000  
Base management fee rate (as a percent)   1.00%             1.00%       1.50%
Net asset value , percentage threshold                         1.00%
Base management fee, threshold (as a percent)                         200.00%
Contractual fee waived, per quarter             $ 1,500,000 $ 1,500,000          
Base management fee         7,046,000 $ 7,195,000       21,697,000 $ 22,854,000    
Investment company, incentive fee waived, income-based         0 5,359,000       0 18,469,000    
Part I incentive fee         2,373,000 5,767,000       3,561,000 20,413,000    
Accrued capital gains incentive fee liability         0         0      
Due to affiliate         1,957,000         $ 1,957,000   1,569,000  
Affiliated Entity                          
Related Party Transaction [Line Items]                          
Related party transaction, termination, notice period                   60 days      
Investment company, incentive fee waived, income-based           5,400,000         18,500,000    
Administrator expense         800,000 700,000       $ 2,300,000 1,700,000    
General and administrative expenses         200,000 100,000       500,000 300,000    
Due to affiliate         $ 2,000,000.0         $ 2,000,000.0   $ 1,600,000  
Oaktree Strategic Income Corporation Merger                          
Related Party Transaction [Line Items]                          
Investment company, contractual fee waived       $ 6,000,000         $ 750,000        
Contractual fee waived, period otherwise receivable (in years)       2 years                  
Contractual fee waived, per quarter       $ 750,000                  
Oaktree Strategic Income II, Inc. Merger                          
Related Party Transaction [Line Items]                          
Investment company, contractual fee waived     $ 9,000,000.0                    
Oaktree Strategic Income II, Inc Merger, Year One                          
Related Party Transaction [Line Items]                          
Investment company, contractual fee waived     6,000,000.0                    
Contractual fee waived, per quarter     1,500,000                    
Oaktree Strategic Income II, Inc Merger, Year Two                          
Related Party Transaction [Line Items]                          
Investment company, contractual fee waived     3,000,000.0                    
Contractual fee waived, per quarter     $ 750,000                    
Investment Advisory Agreement                          
Related Party Transaction [Line Items]                          
Number of components | component         2         2      
Related party transaction, termination, notice period                   60 days      
Base management fee         $ 7,000,000.0 7,200,000       $ 21,700,000 21,900,000    
Management incentive rate (as a percent)                   1.50%      
Investment Advisory Agreement | Affiliated Entity                          
Related Party Transaction [Line Items]                          
Part I incentive fee         2,400,000 400,000       $ 3,600,000 1,900,000    
Incentive fee expense                   9,600,000      
Accrued capital gains incentive fees expensed (reversed)         $ 0 $ 0       $ 0 $ 0    
Investment Advisory Agreement Incentive Rate Pre Incentive Fee Net Investment Income Below Catch Up                          
Related Party Transaction [Line Items]                          
Management incentive rate (as a percent)                   100.00%      
Investment Advisory Agreement Incentive Rate Quarterly Catch Up Threshold                          
Related Party Transaction [Line Items]                          
Management incentive rate (as a percent)                   1.8182%      
Investment Advisory Agreement Cumulative Pre Incentive Fee Net Investment Income                          
Related Party Transaction [Line Items]                          
Management incentive rate (as a percent) 17.50%                 17.50%   17.50%  
Investment Advisory Agreement - Incentive Rate, Realized Capital Gains | Affiliated Entity                          
Related Party Transaction [Line Items]                          
Management incentive rate (as a percent)                   17.50%      
Investment Advisory Agreement - Incentive Rate, Annualized Threshold                          
Related Party Transaction [Line Items]                          
Management incentive rate (as a percent)                   6.00%