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Subsequent Events | 6 Months Ended | 12 Months Ended
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Mar. 31, 2018 | Sep. 30, 2017
Subsequent Events | 11. Subsequent Events The Trust changed names from World Currency Gold Trust to World Gold Trust effective April 16, 2018. | 12. Subsequent Events The Sponsor has evaluated events through the issuance of the financial statements and determined that no events have occurred that require disclosure.
SPDR Long Dollar Gold Trust [Member] |  |
Subsequent Events | 11. Subsequent Events The Trust changed names from World Currency Gold Trust to World Gold Trust effective April 16, 2018. | 12. Subsequent Events The Sponsor has evaluated events through the issuance of the financial statements and determined that no events have occurred that require disclosure.
The Gold Trust [Member] |  |
Subsequent Events |  | 8. Subsequent Events The Sponsor has evaluated events through the issuance of the statement of financial condition and determined that no events have occurred that require disclosure.

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- Definition The entire disclosure for significant events or transactions that occurred after the balance sheet date through the date the financial statements were issued or the date the financial statements were available to be issued. Examples include: the sale of a capital stock issue, purchase of a business, settlement of litigation, catastrophic loss, significant foreign exchange rate changes, loans to insiders or affiliates, and transactions not in the ordinary course of business. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 855 -URI http://asc.fasb.org/topic&trid=2122774 + Details
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