Consolidated Statements of Cash Flows (unaudited) (Parenthetical) $ in Thousands	12 Months Ended
Sep. 30, 2024 USD ($)
Distribution paid	$ 338,192
Foreign currencies, cost	7,973
Restricted foreign currencies, cost	1,219
GBDC 3
Distribution paid	$ 9,516

Amount of acquisition cost for cash and cash equivalent, held in foreign currency. Cash includes, but is not limited to, currency on hand, demand deposit with financial institution, and account with general characteristic of demand deposit. Cash equivalent includes, but is not limited to, short-term, highly liquid investment that is both readily convertible to known amount of cash and so near maturity that it presents insignificant risk of change in value because of change in interest rate.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 210
-Name Accounting Standards Codification
-Section 45
-Paragraph 21
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477796/946-210-45-21

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration