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Significant Accounting Policies - Summary of Gold Receivable / Payable (Detail) - USD ($) $ in Thousands	Jun. 30, 2022	Sep. 30, 2021
Schedule Of Significant Accounting Policies [Line Items]
Gold receivable	$ 0	$ 0
Gold payable	0	0
SPDR Gold Mini Shares Trust [Member]
Schedule Of Significant Accounting Policies [Line Items]
Gold receivable	0	0
Gold payable	$ 0	$ 0

X

- Definition

The total amount of gold due by the trust within one year of the balance sheet date in respect of the redemption of shares.

+ References

No definition available.

+ Details

Name:	gldm_GoldPayable
Namespace Prefix:	gldm_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

Gold receivable.

+ References

No definition available.

+ Details

Name:	gldm_GoldReceivable
Namespace Prefix:	gldm_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

Schedule Of Significant Accounting Policies [Line Items]

+ References

No definition available.

+ Details

Name:	gldm_ScheduleOfSignificantAccountingPoliciesLineItems
Namespace Prefix:	gldm_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	dei_LegalEntityAxis=gldm_SpdrGoldMiniSharesTrustMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: