Statements of Assets and Liabilities (Parenthetical) - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
Dec. 31, 2022	Jun. 30, 2022
Investment Company [Abstract]
Cost of investment in gold bullion	$ 778,366	$ 870,362
Shares authorized	Unlimited	Unlimited

Indicates that the number of common shares permitted to be issued by an entity's charter and bylaws is unlimited. The acceptable value is "Unlimited".

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.29)
-URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

Name:	us-gaap_CommonStockSharesAuthorizedUnlimited
Namespace Prefix:	us-gaap_
Data Type:	us-types:authorizedUnlimitedItemType
Balance Type:	na
Period Type:	duration