Name:	fgdl_LegalFeesAndExpensesAssumedByTheSponser
Namespace Prefix:	fgdl_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Number of business days to transfer ownership of gold from trade date, which is a standard settlement cycle for most broker-dealer securities transactions in the United States.

No definition available.

Name:	fgdl_MaximumNumberOfBusinessDaysToTransferOwnershipOfGoldFromTradeDate
Namespace Prefix:	fgdl_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

Number of share per creation unit.

No definition available.

Name:	fgdl_NumberOfSharePerCreationUnit
Namespace Prefix:	fgdl_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

No definition available.

Name:	fgdl_SignificantAccountingPoliciesLineItems
Namespace Prefix:	fgdl_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

Transfer agent transaction processing fee per order.

No definition available.

Name:	fgdl_TransferAgentTransactionProcessingFeePerOrder
Namespace Prefix:	fgdl_
Data Type:	srt-types:perUnitItemType
Balance Type:	na
Period Type:	instant

Base rate for management and service fees under arrangement to manage operations, including, but not limited to, investment.

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 946
-SubTopic 220
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.6-07(2)(c))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479134/946-220-S99-1

Name:	us-gaap_ManagementAndServiceFeesBaseRate
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

Fees paid to advisors who provide certain management support and administrative oversight services including the organization and sale of stock, investment funds, limited partnerships and mutual funds.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 220
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03(3))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483621/220-10-S99-2