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Borrowings - General, Narrative (Details) - USD ($) | Sep. 30, 2025 | Sep. 30, 2024 | Jun. 09, 2018 | Jun. 08, 2018 | Nov. 05, 2014
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Debt Disclosure [Abstract] |  |  |  |  |
Minimum asset coverage ratio |  |  | 150.00% | 200.00% | 150.00%
Borrowings allowable per dollar of equity |  |  | $ 2 |  |
Debt to equity ratio, maximum |  |  |  |  | 1.65
Maximum secured debt ratio |  |  |  |  | 0.70
Asset coverage ratio | 179.09% | 179.18% |  |  |

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- Definition Asset Coverage, Required Ratio, Minimum + References No definition available. + Details
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- Definition Percentage of total assets less all liabilities and indebtedness not represented by senior security, to senior security representing indebtedness. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name Investment Company Act of 1940 -Section 61 -Paragraph a -Subparagraph (1) -Publisher SEC + Details
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