|ProShares UltraShort 20+ Year Treasury|
|The investment seeks daily investment results that correspond to two times the inverse (-2x) of the daily performance of the Barclays U.S. 20+ Year Treasury Bond Index.
The fund invests in derivatives that ProShare Advisors believes, in combination, should have similar daily return characteristics as two times the inverse (-2x) of the daily return of the index. The index includes all publicly issued, U.S. Treasury securities that have a remaining maturity greater than 20 years, are non-convertible, are denominated in U.S. dollars, are rated investment grade, are fixed rate, and have more than $250 million par outstanding. The fund is non-diversified.|
| ||TBT||Category Avg|
|Annual Report Expense Ratio (net)||0.93%||N/A|
|Annual Holdings Turnover||N/A||N/A|
|Total Net Assets||NaN||N/A|