Statements of Operations - USD ($)		12 Months Ended
		Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Expenses
Sponsor’s fees		$ 25,335,523	$ 28,299,587	$ 29,148,568
Total expenses		25,335,523	28,299,587	29,148,568
Net investment loss		(25,335,523)	(28,299,587)	(29,148,568)
Net Realized and Unrealized Gain (Loss)
Silver bullion sold to pay expenses		(3,730,211)	(2,210,911)	(2,513,184)
Silver bullion distributed for the redemption of Shares		(132,049,264)	(89,909,906)	(108,726,523)
Net realized loss		(135,779,475)	(92,120,817)	(111,239,707)
Net change in unrealized appreciation/depreciation		(311,211,423)	337,891,452	823,171,043
Net realized and unrealized gain (loss)		(446,990,898)	245,770,635	711,931,336
Net increase (decrease) in net assets resulting from operations		$ (472,326,421)	$ 217,471,048	$ 682,782,768
Net increase (decrease) in net assets per Share(a) (in dollars per share)	[1]	$ (1.38)	$ 0.62	$ 1.91

[1] Net increase (decrease) in net assets per Share based on average shares outstanding during the year.