|ProShares UltraShort Silver|
|The investment seeks daily results that match (before fees and expenses) two times the inverse (-2x) of the daily performance of silver bullion as measured by the U.S. dollar fixing price for delivery in London.
The UltraShort Funds do not seek to achieve their stated objectives over a period greater than a single day.|
| ||ZSL||Category Avg|
|Annual Report Expense Ratio (net)||0.95%||N/A|
|Annual Holdings Turnover||0.00%||N/A|
|Total Net Assets||NaN||N/A|