v3.23.3

Related Party Transactions (Details) |  |  | 12 Months Ended
--- | --- | --- | ---
May 03, 2019 | May 02, 2019 | Sep. 30, 2023 USD ($) component | Sep. 30, 2022 USD ($) | Sep. 30, 2021 USD ($)
Related Party Transaction [Line Items] |  |  |  |  |
Base management fee and incentive fee payable |  |  | $ 19,547,000 | $ 15,940,000 |
Base management fee rate (as a percent) | 1.00% | 1.50% |  |  |
Base management fee, threshold (as a percent) | 200.00% |  |  |  |
Base management fee |  |  | 44,899,000 | 39,556,000 | $ 32,288,000
Part I incentive fee |  |  | 35,831,000 | 26,644,000 | 21,598,000
Due to affiliate |  |  | $ 4,310,000 | 3,180,000 |
Affiliated Entity |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |
Related party transaction, termination, notice period |  |  | 60 days |  |
Administrator expense |  |  | $ 1,500,000 | 1,500,000 | 1,700,000
General and administrative expenses |  |  | 300,000 | 300,000 | 200,000
Due to affiliate |  |  | 4,300,000 | 3,200,000 |
Oaktree Strategic Income Corporation Merger |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |
Investment company, contractual fee waived |  |  | $ 6,000,000 |  |
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 |  |
Oaktree Strategic Income II, Inc Merger, Year One |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |
Investment company, contractual fee waived |  |  | 6,000,000 |  |
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 |  |
Contractual fee waived, per quarter |  |  | $ 750,000 |  |
Investment Advisory Agreement |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |
Number of components | component |  |  | 2 |  |
Related party transaction, termination, notice period |  |  | 60 days |  |
Base management fee |  |  | $ 39,400,000 | 36,600,000 | 30,700,000
Management incentive rate |  |  | 1.50% |  |
Investment Advisory Agreement | Affiliated Entity |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |
Part I incentive fee |  |  | $ 35,800,000 | 26,600,000 | 21,600,000
Incentive fee expense |  |  | 9,600,000 | 0 | 8,800,000
Accrued capital gains incentive fees expensed (reversed) |  |  | $ 0 | $ (8,800,000) | $ 17,600,000
Investment Advisory Agreement Incentive Rate Pre Incentive Fee Net Investment Income Below Catch Up |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |
Management incentive rate |  |  | 100.00% |  |
Investment Advisory Agreement Incentive Rate Quarterly Catch Up Threshold |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |
Management incentive rate |  |  | 1.8182% |  |
Investment Advisory Agreement Cumulative Pre Incentive Fee Net Investment Income |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |
Management incentive rate |  |  | 17.50% |  |
Investment Advisory Agreement - Incentive Rate, Realized Capital Gains | Affiliated Entity |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |
Management incentive rate |  |  | 17.50% |  |

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