v2.4.0.6

Schedule of Investments (Futures Contracts Sold) (Parenthetical) (Detail) (USD $) | 3 Months Ended
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Mar. 31, 2013
ProShares UltraShort DJ-UBS Crude Oil [Member] |
Schedule of Investments [Line Items] |
Cash Collateral Pledged To Cover Margin Requirements | $ 7,563,600
ProShares UltraShort DJ-UBS Natural Gas [Member] |
Schedule of Investments [Line Items] |
Cash Collateral Pledged To Cover Margin Requirements | 2,887,500
ProShares UltraShort Gold [Member] |
Schedule of Investments [Line Items] |
Cash Collateral Pledged To Cover Margin Requirements | 11,880
ProShares UltraShort Silver [Member] |
Schedule of Investments [Line Items] |
Cash Collateral Pledged To Cover Margin Requirements | 20,900
ProShares Short Euro [Member] |
Schedule of Investments [Line Items] |
Cash Collateral Pledged To Cover Margin Requirements | 59,400
ProShares UltraShort Australian Dollar [Member] |
Schedule of Investments [Line Items] |
Cash Collateral Pledged To Cover Margin Requirements | 117,150
ProShares Short VIX Short-Term Futures ETF [Member] |
Schedule of Investments [Line Items] |
Cash Collateral Pledged To Cover Margin Requirements | $ 21,073,502

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- Definition Cash collateral pledged to cover margin requirements + References No definition available. + Details
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- Details
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