Financial Highlights (Details) - $ / shares	12 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2021
Common Stock [Member]
Financial Highlights [Line Items]
Net investment income/(loss) per share	$ 2.55	$ 2.32	$ 3.11	$ 1.48	$ 6.92