Percentage of total assets less all liabilities and indebtedness not represented by senior security, to senior security representing indebtedness.

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name Investment Company Act of 1940
-Section 61
-Paragraph a
-Subparagraph (1)
-Publisher SEC

Name:	us-gaap_InvestmentCompanySeniorSecurityIndebtednessAssetCoverageRatio
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

Borrowings - Narrative (Details)	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2021	Feb. 06, 2019	Feb. 05, 2019
Debt Disclosure [Abstract]
Minimum asset coverage ratio required						1.50	1.50
Asset coverage ratio	180.21%	185.96%	180.68%	181.70%	200.04%