v3.10.0.1

Creation and Redemption of Creation Units - Schedule of Transaction Fees (Detail) - USD ($) | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2018 | Jun. 30, 2018
Creation And Redemption Of Creation Units [Line Items] |  |
Transaction fees | $ 652,852 | $ 1,966,631
ProShares Short VIX Short-Term Futures ETF [Member] |  |
Creation And Redemption Of Creation Units [Line Items] |  |
Transaction fees | 117,253 | 557,733
ProShares Ultra Bloomberg Crude Oil [Member] |  |
Creation And Redemption Of Creation Units [Line Items] |  |
Transaction fees | 41,962 | 105,564
ProShares Ultra Bloomberg Natural Gas [Member] |  |
Creation And Redemption Of Creation Units [Line Items] |  |
Transaction fees | 2,040 | 7,843
ProShares Ultra Gold [Member] |  |
Creation And Redemption Of Creation Units [Line Items] |  |
Transaction fees | 2,097 | 6,263
ProShares Ultra Silver [Member] |  |
Creation And Redemption Of Creation Units [Line Items] |  |
Transaction fees | 6,305 | 11,572
ProShares Ultra VIX Short-Term Futures ETF [Member] |  |
Creation And Redemption Of Creation Units [Line Items] |  |
Transaction fees | 407,322 | 1,061,749
Proshares Ultra Pro 3x Crude Oil ETF [Member] |  |
Creation And Redemption Of Creation Units [Line Items] |  |
Transaction fees | 8,904 | 13,698
ProShares UltraPro 3X Short Crude Oil ETF [Member] |  |
Creation And Redemption Of Creation Units [Line Items] |  |
Transaction fees | 8,498 | 20,543
ProShares UltraShort Bloomberg Crude Oil [Member] |  |
Creation And Redemption Of Creation Units [Line Items] |  |
Transaction fees | 27,882 | 65,813
ProShares UltraShort Bloomberg Natural Gas [Member] |  |
Creation And Redemption Of Creation Units [Line Items] |  |
Transaction fees | 622 | 2,732
ProShares UltraShort Gold [Member] |  |
Creation And Redemption Of Creation Units [Line Items] |  |
Transaction fees | 2,996 | 8,911
ProShares VIX Mid-Term Futures ETF [Member] |  |
Creation And Redemption Of Creation Units [Line Items] |  |
Transaction fees | 2,116 | 12,050
ProShares VIX Short-Term Futures ETF [Member] |  |
Creation And Redemption Of Creation Units [Line Items] |  |
Transaction fees | $ 24,855 | $ 92,160

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