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CONSOLIDATED STATEMENTS OF CHANGES IN NET ASSETS (Parentheticals) - $ / shares | 3 Months Ended | 6 Months Ended
--- | --- | ---
Mar. 31, 2023 | Dec. 31, 2022 | Mar. 31, 2022 | Dec. 31, 2021 | Mar. 31, 2023 | Mar. 31, 2022
Statement of Stockholders' Equity [Abstract] |  |  |  |  |  |
Net investment income (in USD per share) | $ 0.23 | $ 0.21 | $ 0.20 | $ 0.20 | $ 0.44 | $ 0.40

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