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Significant Accounting Policies (Narrative) (Details) (USD $)
 3 Months Ended 6 Months Ended
Jun. 30, 2014
Jun. 30, 2013
Jun. 30, 2014
Jun. 30, 2013
Dec. 31, 2013
Significant Accounting Policies [Abstract]          
Platinum receivable $ 0   $ 0    
Platinum payable 0   0   0
Annualized rate of Sponsors Fee 0.60% [1]   0.60% [1]    
Sponsor Fees 771,352 804,952 1,524,910 1,626,050  
Fees payable to Sponsor $ 260,484   $ 260,484   $ 260,849
[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.