Transactions with Affiliated Companies - Additional Information (Details) |
6 Months Ended |
|---|---|
Mar. 31, 2026 | |
| Minimum | |
| Investments In And Advances To Affiliates [Line Items] | |
| Ownership percentage of voting securities | 5.00% |
| Non-controlled, Affiliated Investments | Minimum | |
| Investments In And Advances To Affiliates [Line Items] | |
| Ownership percentage of voting securities | 5.00% |
| Non-controlled, Affiliated Investments | Maximum | |
| Investments In And Advances To Affiliates [Line Items] | |
| Ownership percentage of voting securities | 25.00% |
| Controlled, Affiliated Investments | Maximum | |
| Investments In And Advances To Affiliates [Line Items] | |
| Ownership percentage of voting securities | 25.00% |