Schedules of Investment $ in Thousands	Mar. 31, 2018 USD ($) oz	Sep. 30, 2017 USD ($) oz
Summary of Investments, Other than Investments in Related Parties, Reportable Data [Line Items]
Total Investment, % of Net Assets	100.03%	100.03%
Liabilities in excess of other assets	(0.03%)	(0.03%)
Net Assets, % of Net Assets	100.00%	100.00%
Total Investment, Fair Value	$ 36,013,428	$ 35,669,225
Liabilities in excess of other assets	(12,156)	(11,720)
Net Assets, Fair Value	36,001,272	35,657,505
Total Investment, Cost	$ 34,157,979	$ 34,720,945
Investment in Gold [Member]
Summary of Investments, Other than Investments in Related Parties, Reportable Data [Line Items]
Total Investment, % of Net Assets	100.03%	100.03%
Total Investment, Fair Value	$ 36,013,428	$ 35,669,225
Total Investment, Ounces of gold \| oz	27,203.6	27,799.3
Total Investment, Cost	$ 34,157,979	$ 34,720,945

Percentage of net assets on net assets.

No definition available.

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- Definition

Fair value of asset after deduction of liability.

+ References

No definition available.

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- Definition

Cost of the investment.

+ References

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- Definition

Value of the investment at close of period. For schedules of investments that are categorized, the value would be aggregated by category. For investment in and advances to affiliates, if operations of any controlled companies are different in character from those of the company, group such affiliates within divisions and by type of activities.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 946
-SubTopic 210
-Section 50
-Paragraph 6
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- Definition

Quantity of the investment. Indicate the measure in the unit of measure. This is commonly used for investments other than securities. For example, if the investment is gold, the balance would be the number of ounces and the unit of measure would indicate "ounces".

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 946
-SubTopic 320
-Section S99
-Paragraph 5
-Subparagraph (SX 210.12-13.2, Column B)
-URI http://asc.fasb.org/extlink&oid=50485924&loc=d3e611282-123010

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Percent of net assets at close of period. For schedules of investments that are categorized, each category has a percent of net assets for the aggregated value of the Investments in the category.

+ References

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- Definition

The net of non investment assets and liabilities. This amount represents the difference between the aggregate value of the investments, including long and short positions, and net assets.

+ References

No definition available.

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The percent of net assets of non investment assets and liabilities. This represents the percentage difference between the investments, including long and short positions, and net assets.

+ References

No definition available.

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- Definition

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.

+ References

No definition available.

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