v2.4.0.6

Organization (Tables) | 3 Months Ended
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Mar. 31, 2013
Schedule of Share Splits and Reverse Share Splits | The table below includes Share splits and reverse Share splits for the Funds during the years ended December 31, 2012 and 2011. 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 UltraShort DJ-UBS Commodity |  | February 25, 2011 |  | 1-for-5 reverse Share split |  | February 25, 2011
ProShares UltraShort DJ-UBS Crude Oil |  | February 25, 2011 |  | 1-for-5 reverse Share split |  | February 25, 2011
ProShares UltraShort DJ-UBS Natural Gas |  | May 11, 2012 |  | 3-for-1 Share split |  | May 11, 2012
ProShares UltraShort Gold |  | October 5, 2012 |  | 1-for-4 reverse Share split |  | October 5, 2012
ProShares UltraShort Silver |  | February 25, 2011 |  | 1-for-4 reverse Share split |  | February 25, 2011
ProShares UltraShort Silver |  | May 11, 2012 |  | 1-for-5 reverse Share split |  | May 11, 2012
ProShares UltraShort Yen |  | October 13, 2011 |  | 1-for-3 reverse Share split |  | October 13, 2011
ProShares Ultra DJ-UBS Crude Oil |  | February 25, 2011 |  | 1-for-4 reverse Share split |  | February 25, 2011
ProShares Ultra DJ-UBS Natural Gas |  | May 11, 2012 |  | 1-for-5 reverse Share split |  | May 11, 2012
ProShares Ultra Silver |  | October 13, 2011 |  | 2-for-1 Share split |  | October 13, 2011
ProShares Ultra VIX Short-Term Futures ETF |  | March 8, 2012 |  | 1-for-6 reverse Share split |  | March 8, 2012
ProShares Ultra VIX Short-Term Futures ETF |  | September 7, 2012 |  | 1-for-10 reverse Share split |  | September 7, 2012
ProShares Short VIX Short-Term Futures ETF |  | October 5, 2012 |  | 2-for-1 Share split |  | October 5, 2012

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- Definition Schedule Of Share Splits And Reverse Share Splits [Table Text Block] + References No definition available. + Details
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