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Fair Value of Financial Instruments - Additional Information (Details) - Long-Term Credit Facility - USD ($) $ in Millions | 3 Months Ended |
--- | --- | ---
Dec. 31, 2025 | Dec. 31, 2024 | Sep. 30, 2025
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items] |  |  |
Line of credit facility amendment costs | $ 0.5 | $ 0.0 |
Net change in unrealized appreciation (depreciation) | 0.1 | $ 0.1 |
Net unrealized appreciation (depreciation) on the Credit Facility | $ 0.0 |  | $ 0.0

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