XML 40 R21.htm IDEA: XBRL DOCUMENT
v2.4.0.8

Note 8 - Financial Highlights (Tables) | 9 Months Ended
--- | ---
Sep. 30, 2014
Financial Highlights [Abstract] |
Financial Highlights [Table Text Block] |
|  | Three Months Ended September 30, 2014 |  |  | Nine Months Ended September 30, 2014 |
Net asset value per Share, beginning of period |  | $ | 20.04 |  |  | $ | 18.77 |
Net investment loss(a) |  |  | (0.02 | ) |  |  | (0.07 | )
Net realized and unrealized loss(b) |  |  | (3.61 | ) |  |  | (2.29 | )
Net decrease in net assets from operations |  |  | (3.63 | ) |  |  | (2.36 | )
Net asset value per Share, end of period |  | $ | 16.41 |  |  | $ | 16.41 |
Total return, at net asset value(c) |  |  | (18.11 | )% |  |  | (12.57 | )%
Ratio to average net assets: |  |  |  |  |  |  |  |
Net investment loss(d) |  |  | (0.50 | )% |  |  | (0.50 | )%
Expenses(d) |  |  | 0.50 | % |  |  | 0.50 | %

X
- Details
Name: | slv_FinancialHighlightsAbstract
Namespace Prefix: | slv_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Financial highlights table. + References No definition available. + Details
Name: | slv_FinancialHighlightsTableTextBlock
Namespace Prefix: | slv_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration