Schedules of Investments (Unaudited) - Investments (Details) |
Jun. 30, 2021
USD ($)
oz
|
Mar. 31, 2021
USD ($)
oz
|
Dec. 31, 2020
USD ($)
oz
|
Jun. 30, 2020
USD ($)
oz
|
Mar. 31, 2020
USD ($)
oz
|
Dec. 31, 2019
USD ($)
oz
|
|---|---|---|---|---|---|---|
| Silver bullion (Ounce) | oz | 558,173,283 | 575,124,212 | 558,715,882 | 498,007,498 | 395,368,466 | 362,616,711 |
| Investment in silver bullion, cost | $ 11,759,403,511 | $ 11,937,644,776 | $ 10,472,474,303 | $ 8,374,199,813 | $ 6,681,432,888 | $ 6,294,157,046 |
| Silver bullion fair value | 14,381,334,638 | 14,797,590,146 | ||||
| Less Liabilities | (6,352,900) | (5,797,426) | ||||
| Net Assets | $ 14,374,981,738 | $ 13,796,532,456 | $ 14,791,792,720 | $ 8,883,456,887 | $ 5,505,117,093 | $ 6,540,758,565 |