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Financial Highlights (USD $)
 12 Months Ended
Dec. 31, 2014
Per Share Performance (for a Share outstanding throughout the entire period)  
Net asset value per Share at beginning of year $ 65.91gltr_NetAssetValuePerShare [1]
Income from investment operations:  
Net investment loss $ (0.41)gltr_NetInvestmentIncomLossPerShare [1]
Total realized and change in unrealized gain on investment in Bullion $ (3.90)gltr_NetRealizedAndUnrealizedGainsAndLossesOnInvestmentInBullionPerShare [1]
Change in net assets from operations $ (4.31)gltr_ChangeInNetAssetsFromOperationsPerShare [1]
Net asset value per Share at end of year $ 61.60gltr_NetAssetValuePerShare [1]
Weighted average number of shares 2,669,726us-gaap_WeightedAverageNumberOfSharesOutstandingBasic [1]
Expense Ratio  
Sponsor's fee per Share 0.60%gltr_AnnualizedRateOfSponsorsFee [1]
Net Investment Loss Ratio  
Net investment loss ratio (0.60%)gltr_AnnualizedNetInvestmentIncomeLossRatio [1]
Total Return (6.54%)gltr_NonAnnualizedTotalReturn [1]
[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.