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Schedules of Investments (Unaudited) - Investments (Details)	Mar. 31, 2020 USD ($) oz	Dec. 31, 2019 USD ($) oz	Mar. 31, 2019 USD ($) oz	Dec. 31, 2018 USD ($) oz
Silver bullion (Ounce) | oz	395,368,466	362,616,711	309,301,232	317,233,610
Investment in silver bullion, cost	$ 6,681,432,888	$ 6,294,157,046	$ 5,475,186,353	$ 5,641,558,156
Silver bullion fair value	5,507,482,733	6,543,418,555
Less Liabilities	(2,365,640)	(2,659,990)
Net Assets	$ 5,505,117,093	$ 6,540,758,565	$ 4,668,431,637	$ 4,904,036,623

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