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Statement of Changes in Net Assets (USD $)
In Thousands, except Share data, unless otherwise specified
 12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Opening balance at January 1, 2014 (in Shares) 3,950,000us-gaap_SharesOutstanding [1]  
Creations (in Shares) 1,850,000us-gaap_StockIssuedDuringPeriodSharesNewIssues [1] 2,050,000us-gaap_StockIssuedDuringPeriodSharesNewIssues
Redemptions (in Shares) (1,950,000)us-gaap_StockRedeemedOrCalledDuringPeriodShares [1] (300,000)us-gaap_StockRedeemedOrCalledDuringPeriodShares
Closing balance at December 31, 2014 (in Shares) 3,850,000us-gaap_SharesOutstanding [1] 3,950,000us-gaap_SharesOutstanding [1]
Opening balance at January 1, 2014 $ 259,804us-gaap_StockholdersEquity [1],[2]  
Net investment loss (1,089)gltr_NetInvestmentGainLoss [1] (1,201)gltr_NetInvestmentGainLoss [3]
Realized gain on investment in Bullion 2,832us-gaap_RealizedInvestmentGainsLosses [1]  
Change in unrealized loss on investment Bullion (8,799)gltr_ChangeInUnrealizedGainLossOnInvestmentInBullion [1] 0gltr_ChangeInUnrealizedGainLossOnInvestmentInBullion [3]
Creations 114,973us-gaap_StockIssuedDuringPeriodValueNewIssues [1] 149,235us-gaap_StockIssuedDuringPeriodValueNewIssues
Redemptions (131,123)us-gaap_StockRedeemedOrCalledDuringPeriodValue [1] (20,607)us-gaap_StockRedeemedOrCalledDuringPeriodValue
Closing balance at December 31, 2014 237,152us-gaap_StockholdersEquity [1] 259,804us-gaap_StockholdersEquity [1],[2]
Adjustments for Change to Fair Value [Member]    
Closing balance at December 31, 2014 $ 554us-gaap_StockholdersEquity
/ us-gaap_AdjustmentsForChangeInAccountingPrincipleAxis
= gltr_AdjustmentsForChangeToFairValueMember		 [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.
[2] Derived from audited Statement of Financial Condition as of December 31, 2013. The amounts are those previously reported under non-investment company accounting. Refer to Note 2.1 for further information.
[3] Amounts are those previously reported under non investment company accounting.  Refer to Note 2.1 for additional information.