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Significant Accounting Policies (Narrative) (Details) - USD ($)
3 Months Ended 11 Months Ended
Mar. 31, 2019
Mar. 31, 2018
Nov. 30, 2018
Dec. 31, 2018
Significant Accounting Policies [Abstract]        
Percentage of gold held by UBS A.G. 0.00%      
Basket of shares 50,000      
Fair value transfers $ 0     $ 0
Gold receivable 0     24,721,639
Gold payable $ 0      
Annualized rate of Sponsors Fee 0.17%   0.39%  
Reserve for uncertain tax positions $ 0     0
Sponsor Fees 373,202 $ 1,061,160    
Fees payable to Sponsor 129,448     $ 119,052
All other expenses $ 0 $ 0