Schedules of Investments (Unaudited) - Investments (Details)	Mar. 31, 2021 USD ($) oz	Dec. 31, 2020 USD ($) oz	Mar. 31, 2020 USD ($) oz	Dec. 31, 2019 USD ($) oz
Silver bullion (Ounce) \| oz	575,124,212	558,715,882	395,368,466	362,616,711
Investment in silver bullion, cost	$ 11,937,644,776	$ 10,472,474,303	$ 6,681,432,888	$ 6,294,157,046
Silver bullion fair value	13,802,981,086	14,797,590,146
Less Liabilities	(6,448,630)	(5,797,426)
Net Assets	$ 13,796,532,456	$ 14,791,792,720	$ 5,505,117,093	$ 6,540,758,565

Value of the investment at close of period. For schedules of investments that are categorized, the value would be aggregated by category. For investment in and advances to affiliates, if operations of any controlled companies are different in character from those of the company, group such affiliates within divisions and by type of activities.

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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
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Reference 3: http://www.xbrl.org/2003/role/disclosureRef
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-Name Accounting Standards Codification
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