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Significant accounting policies (Details Narrative)	3 Months Ended		9 Months Ended
	Mar. 31, 2022 USD ($) oz	Mar. 31, 2021 USD ($)	Mar. 31, 2022 USD ($) oz shares	Mar. 31, 2021 USD ($)	Jun. 30, 2021 USD ($)
Accounting Policies [Abstract]
Fee paid to sponsor percentage			0.1749%
Fees payable to sponsor	$ 152,722		$ 152,722		$ 153,517
Other expenses	$ 0	$ 0	$ 0	$ 0
Minimum block of shares issued redeemed | shares			50,000
Transaction fee for creations and redemptions			$ 500
Maximum amount of gold to be held by trust unallocated account | oz	430		430

X

- Definition

The percent of the adjusted daily net asset value of the Trust used in computing fees paid to Sponsor,

+ References

No definition available.

+ Details

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Balance Type:	na
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X

- Definition

Fees payable to sponsor.

+ References

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+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
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X

- Definition

The maximum amount of gold (ounces) to be held by Trust unallocated account at the close of business.

+ References

No definition available.

+ Details

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X

- Definition

The minimum block of shares that can be created or redeemed against bullion deposits or distributions.

+ References

No definition available.

+ Details

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Namespace Prefix:	BAR_
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X

- Definition

Transaction Fee For Creations And Redemptions.

+ References

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Namespace Prefix:	BAR_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
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- References

No definition available.

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X

- Definition

Amount of expense classified as other.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.4,6)
-URI https://asc.fasb.org/extlink&oid=126953954&loc=SL114868664-224227

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 220
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-04.7)
-URI https://asc.fasb.org/extlink&oid=120400993&loc=SL114874131-224263

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