Schedules of Investments - Investments (Details)	Dec. 31, 2023 USD ($) oz	Dec. 31, 2022 USD ($) oz	Dec. 31, 2021 USD ($) oz	Dec. 31, 2020 USD ($) oz
Silver bullion (Ounce) | oz	436,892,231	466,265,146	530,838,100	558,715,882
Investment in silver bullion, cost	$ 9,616,427,847	$ 10,025,562,224	$ 11,330,688,133	$ 10,472,474,303
Silver bullion fair value	10,393,666,180	11,164,718,926
Less Liabilities	(4,488,405)	(4,633,955)
Net Assets	$ 10,389,177,775	$ 11,160,084,971	$ 12,249,234,223	$ 14,791,792,720