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Significant Accounting Policies - Gold Receivable (Detail) - USD ($)
$ in Thousands
Sep. 30, 2015
Sep. 30, 2014
Gold Receivable    
Gold receivable $ 117,353 [1] $ 0
[1] Effective October 1, 2014, the SPDR® Gold Trust (the "Trust") adopted the financial presentation provisions for an investment company. See note 2.2 to our audited financial statements.