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Significant Accounting Policies (Schedule Of Bullion Receivable And Payable) (Details) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Significant Accounting Policies [Abstract]      
Bullion receivable $ 3,080gltr_BullionReceivableAtMarketValue [1] $ 0gltr_BullionReceivableAtMarketValue  
Bullion payable $ 0gltr_BullionPayableAtMarketValue $ 0gltr_BullionPayableAtMarketValue $ 0gltr_BullionPayableAtMarketValue
[1] Effective January 1, 2014, the Trust has adopted the provisions of Topic 946, Investment Companies, and follows specialized accounting. Refer to Note 2.1 for additional information.