v2.4.1.9

Organization (Tables) | 3 Months Ended
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Mar. 31, 2015
Accounting Policies [Abstract] |
Schedule of Share Splits and Reverse Share Splits | The table below includes Share splits and reverse Share splits for the Funds during the year ended December 31, 2014. There were no Share splits or reverse Share splits during the three months ended March 31, 2015. The ticker symbols for these Funds did not change and each Fund continues to trade on the NYSE Arca.
Fund |  | Execution Date (Prior to Opening of Trading) |  | Type of Split |  | Date Trading Resumed at Post- Split Price
ProShares VIX Mid-Term Futures ETF |  | November 6, 2014 |  | 1-for-4 reverse Share split |  | November 6, 2014
ProShares Short VIX Short-Term Futures ETF |  | January 21, 2014 |  | 2-for-1 Share split |  | January 24, 2014
ProShares Ultra VIX Short-Term Futures ETF |  | January 21, 2014 |  | 1-for-4 reverse Share split |  | January 24, 2014
ProShares Ultra Silver |  | January 21, 2014 |  | 1-for-4 reverse Share split |  | January 24, 2014

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