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Statements of Cash Flows (Unaudited) - USD ($)
 3 Months Ended 9 Months Ended 12 Months Ended
Sep. 30, 2017
Sep. 30, 2016
Sep. 30, 2017
Sep. 30, 2016
Dec. 31, 2016
Cash Flows from Operating Activities          
Proceeds from gold bullion sold to pay expenses     $ 15,136,183 $ 14,197,999  
Expenses – Sponsor’s fees paid     (15,136,183) (14,197,999)  
Net cash provided by operating activities     0 0  
Increase (decrease) in cash     0 0  
Cash, beginning of period     0 0 $ 0
Cash, end of period $ 0 $ 0 0 0 0
Reconciliation of Net Increase (Decrease) in Net Assets Resulting from Operations to Net Cash Provided by (Used in) Operating Activities          
Net increase (decrease) in net assets resulting from operations 267,220,767 (6,539,934) 780,642,366 1,441,616,479 308,743,920
Adjustments to reconcile net increase (decrease) in net assets resulting from operations to net cash provided by (used in) operating activities:          
Proceeds from gold bullion sold to pay expenses     15,136,183 14,197,999  
Net realized (gain) loss (14,657,772) (7,152,642) (19,244,967) (16,639,038) (25,068,804)
Net change in unrealized appreciation/depreciation $ (258,137,498) $ 7,738,711 (776,911,354) (1,440,006,049) $ (303,987,270)
Change in operating assets and liabilities:          
Sponsor’s fees payable     377,772 830,609  
Net cash provided by operating activities     0 0  
Supplemental disclosure of non-cash information:          
Gold bullion contributed for Shares issued     2,067,477,206 3,555,013,884  
Gold bullion distributed for Shares redeemed     $ (731,446,104) $ (570,304,850)