v3.8.0.1

Schedule of Investments - Short-Term U.S. Government and Agency Obligations (Detail) | Sep. 30, 2017 USD ($)
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Schedule of Investments [Line Items] |  |
Total short-term U.S. government and agency obligations, value | $ 3,181,660,408 |
ProShares VIX Short-Term Futures ETF [Member] |  |
Schedule of Investments [Line Items] |  |
Total short-term U.S. government and agency obligations, value | 186,716,429 |
ProShares VIX Short-Term Futures ETF [Member] | U.S. Treasury Bills 0.998% due 10/05/17 [Member] |  |
Schedule of Investments [Line Items] |  |
Principal Amount | 7,000,000 | [1]
Total short-term U.S. government and agency obligations, value | 6,999,568 | [1]
ProShares VIX Short-Term Futures ETF [Member] | U.S. Treasury Bills 1.043% due 10/12/17 [Member] |  |
Schedule of Investments [Line Items] |  |
Principal Amount | 18,000,000 | [1]
Total short-term U.S. government and agency obligations, value | 17,995,300 | [1]
ProShares VIX Short-Term Futures ETF [Member] | U.S. Treasury Bills 0.928% due 10/19/17 [Member] |  |
Schedule of Investments [Line Items] |  |
Principal Amount | 11,000,000 | [1]
Total short-term U.S. government and agency obligations, value | 10,995,222 | [1]
ProShares VIX Short-Term Futures ETF [Member] | U.S. Treasury Bills 1.037% due 10/26/17 [Member] |  |
Schedule of Investments [Line Items] |  |
Principal Amount | 35,000,000 | [1],[2]
Total short-term U.S. government and agency obligations, value | 34,978,185 | [1],[2]
ProShares VIX Short-Term Futures ETF [Member] | U.S. Treasury Bills 1.013% due 11/02/17 [Member] |  |
Schedule of Investments [Line Items] |  |
Principal Amount | 7,000,000 | [1],[2]
Total short-term U.S. government and agency obligations, value | 6,994,243 | [1],[2]
ProShares VIX Short-Term Futures ETF [Member] | U.S. Treasury Bills 1.023% due 11/09/17 [Member] |  |
Schedule of Investments [Line Items] |  |
Principal Amount | 4,000,000 | [1],[2]
Total short-term U.S. government and agency obligations, value | 3,995,947 | [1],[2]
ProShares VIX Short-Term Futures ETF [Member] | U.S. Treasury Bills 0.988% due 11/16/17 [Member] |  |
Schedule of Investments [Line Items] |  |
Principal Amount | 29,000,000 | [1],[2]
Total short-term U.S. government and agency obligations, value | 28,965,383 | [1],[2]
ProShares VIX Short-Term Futures ETF [Member] | U.S. Treasury Bills 0.962% due 11/30/17 [Member] |  |
Schedule of Investments [Line Items] |  |
Principal Amount | 13,000,000 | [1],[2]
Total short-term U.S. government and agency obligations, value | 12,979,014 | [1],[2]
ProShares VIX Short-Term Futures ETF [Member] | U.S. Treasury Bills 1.033% due 12/07/17 [Member] |  |
Schedule of Investments [Line Items] |  |
Principal Amount | 7,000,000 | [1],[2]
Total short-term U.S. government and agency obligations, value | 6,987,359 | [1],[2]
ProShares VIX Short-Term Futures ETF [Member] | U.S. Treasury Bills 0.987% due 12/14/17 [Member] |  |
Schedule of Investments [Line Items] |  |
Principal Amount | 11,000,000 | [1],[2]
Total short-term U.S. government and agency obligations, value | 10,978,586 | [1],[2]
ProShares VIX Short-Term Futures ETF [Member] | U.S. Treasury Bills 1.001% due 01/11/18 [Member] |  |
Schedule of Investments [Line Items] |  |
Principal Amount | 12,000,000 | [1]
Total short-term U.S. government and agency obligations, value | 11,966,165 | [1]
ProShares VIX Short-Term Futures ETF [Member] | U.S. Treasury Bills 1.040% due 02/01/18 [Member] |  |
Schedule of Investments [Line Items] |  |
Principal Amount | 33,000,000 | [1]
Total short-term U.S. government and agency obligations, value | 32,881,457 | [1]
ProShares VIX Mid-Term Futures ETF [Member] |  |
Schedule of Investments [Line Items] |  |
Total short-term U.S. government and agency obligations, value | 35,955,278 |
ProShares VIX Mid-Term Futures ETF [Member] | U.S. Treasury Bills 1.013% due 11/02/17 [Member] |  |
Schedule of Investments [Line Items] |  |
Principal Amount | 5,000,000 | [1]
Total short-term U.S. government and agency obligations, value | 4,995,888 | [1]
ProShares VIX Mid-Term Futures ETF [Member] | U.S. Treasury Bills 1.023% due 11/09/17 [Member] |  |
Schedule of Investments [Line Items] |  |
Principal Amount | 2,000,000 | [1]
Total short-term U.S. government and agency obligations, value | 1,997,973 | [1]
ProShares VIX Mid-Term Futures ETF [Member] | U.S. Treasury Bills 0.992% due 10/26/17 [Member] |  |
Schedule of Investments [Line Items] |  |
Principal Amount | 13,000,000 | [1]
Total short-term U.S. government and agency obligations, value | 12,991,897 | [1]
ProShares VIX Mid-Term Futures ETF [Member] | U.S. Treasury Bills 0.977% due 11/16/17 [Member] |  |
Schedule of Investments [Line Items] |  |
Principal Amount | 9,000,000 | [1]
Total short-term U.S. government and agency obligations, value | 8,989,257 | [1]
ProShares VIX Mid-Term Futures ETF [Member] | U.S. Treasury Bills 1.001% due 01/11/18 [Member] |  |
Schedule of Investments [Line Items] |  |
Principal Amount | 7,000,000 | [1]
Total short-term U.S. government and agency obligations, value | 6,980,263 | [1]
ProShares Short VIX Short-Term Futures ETF [Member] |  |
Schedule of Investments [Line Items] |  |
Total short-term U.S. government and agency obligations, value | 770,134,521 |
ProShares Short VIX Short-Term Futures ETF [Member] | U.S. Treasury Bills 0.987% due 12/14/17 [Member] |  |
Schedule of Investments [Line Items] |  |
Principal Amount | 50,000,000 | [1],[2]
Total short-term U.S. government and agency obligations, value | 49,902,665 | [1],[2]
ProShares Short VIX Short-Term Futures ETF [Member] | U.S. Treasury Bills 1.001% due 01/11/18 [Member] |  |
Schedule of Investments [Line Items] |  |
Principal Amount | 9,000,000 | [1]
Total short-term U.S. government and agency obligations, value | 8,974,624 | [1]
ProShares Short VIX Short-Term Futures ETF [Member] | U.S. Treasury Bills1.041% due 10/19/17 [Member] |  |
Schedule of Investments [Line Items] |  |
Principal Amount | 47,000,000 | [1]
Total short-term U.S. government and agency obligations, value | 46,979,583 | [1]
ProShares Short VIX Short-Term Futures ETF [Member] | U.S. Treasury Bills 1.048% due 10/26/17 [Member] |  |
Schedule of Investments [Line Items] |  |
Principal Amount | 78,000,000 | [1]
Total short-term U.S. government and agency obligations, value | 77,951,383 | [1]
ProShares Short VIX Short-Term Futures ETF [Member] | U.S. Treasury Bills 1.001% due 11/02/17 [Member] |  |
Schedule of Investments [Line Items] |  |
Principal Amount | 115,000,000 | [1]
Total short-term U.S. government and agency obligations, value | 114,905,424 | [1]
ProShares Short VIX Short-Term Futures ETF [Member] | U.S. Treasury Bills 1.029% due 11/09/17 [Member] |  |
Schedule of Investments [Line Items] |  |
Principal Amount | 199,000,000 | [1]
Total short-term U.S. government and agency obligations, value | 198,798,353 | [1]
ProShares Short VIX Short-Term Futures ETF [Member] | U.S. Treasury Bills 0.986% due 11/16/17 [Member] |  |
Schedule of Investments [Line Items] |  |
Principal Amount | 160,000,000 | [1],[2]
Total short-term U.S. government and agency obligations, value | 159,809,008 | [1],[2]
ProShares Short VIX Short-Term Futures ETF [Member] | U.S. Treasury Bills 0.999% due 11/24/17 [Member] |  |
Schedule of Investments [Line Items] |  |
Principal Amount | 10,000,000 | [1]
Total short-term U.S. government and agency obligations, value | 9,985,499 | [1]
ProShares Short VIX Short-Term Futures ETF [Member] | U.S. Treasury Bills 1.005% due 11/30/17 [Member] |  |
Schedule of Investments [Line Items] |  |
Principal Amount | 73,000,000 | [1],[2]
Total short-term U.S. government and agency obligations, value | 72,882,156 | [1],[2]
ProShares Short VIX Short-Term Futures ETF [Member] | U.S. Treasury Bills 1.023% due 12/07/17 [Member] |  |
Schedule of Investments [Line Items] |  |
Principal Amount | 30,000,000 | [1],[2]
Total short-term U.S. government and agency obligations, value | 29,945,826 | [1],[2]
ProShares Ultra VIX Short-Term Futures ETF [Member] |  |
Schedule of Investments [Line Items] |  |
Total short-term U.S. government and agency obligations, value | 521,315,100 |
ProShares Ultra VIX Short-Term Futures ETF [Member] | U.S. Treasury Bills 1.013% due 11/02/17 [Member] |  |
Schedule of Investments [Line Items] |  |
Principal Amount | 13,000,000 | [1],[2]
Total short-term U.S. government and agency obligations, value | 12,989,309 | [1],[2]
ProShares Ultra VIX Short-Term Futures ETF [Member] | U.S. Treasury Bills 1.001% due 01/11/18 [Member] |  |
Schedule of Investments [Line Items] |  |
Principal Amount | 50,000,000 | [1],[2]
Total short-term U.S. government and agency obligations, value | 49,859,020 | [1],[2]
ProShares Ultra VIX Short-Term Futures ETF [Member] | U.S. Treasury Bills 0.986% due 11/16/17 [Member] |  |
Schedule of Investments [Line Items] |  |
Principal Amount | 97,000,000 | [1],[2]
Total short-term U.S. government and agency obligations, value | 96,884,211 | [1],[2]
ProShares Ultra VIX Short-Term Futures ETF [Member] | U.S. Treasury Bills 1.011% due 10/05/17 [Member] |  |
Schedule of Investments [Line Items] |  |
Principal Amount | 15,023,000 | [1],[2]
Total short-term U.S. government and agency obligations, value | 15,022,073 | [1],[2]
ProShares Ultra VIX Short-Term Futures ETF [Member] | U.S. Treasury Bills 1.067% due 10/12/17 [Member] |  |
Schedule of Investments [Line Items] |  |
Principal Amount | 20,000,000 | [1],[2]
Total short-term U.S. government and agency obligations, value | 19,994,778 | [1],[2]
ProShares Ultra VIX Short-Term Futures ETF [Member] | U.S. Treasury Bills 1.081% due 10/19/17 [Member] |  |
Schedule of Investments [Line Items] |  |
Principal Amount | 46,000,000 | [1],[2]
Total short-term U.S. government and agency obligations, value | 45,980,017 | [1],[2]
ProShares Ultra VIX Short-Term Futures ETF [Member] | U.S. Treasury Bills 1.000% due 10/26/17 [Member] |  |
Schedule of Investments [Line Items] |  |
Principal Amount | 47,000,000 | [1],[2]
Total short-term U.S. government and agency obligations, value | 46,970,705 | [1],[2]
ProShares Ultra VIX Short-Term Futures ETF [Member] | U.S. Treasury Bills 0.957% due 11/09/17 [Member] |  |
Schedule of Investments [Line Items] |  |
Principal Amount | 20,000,000 | [1],[2]
Total short-term U.S. government and agency obligations, value | 19,979,734 | [1],[2]
ProShares Ultra VIX Short-Term Futures ETF [Member] | U.S. Treasury Bills 0.999% due 11/30/17 [Member] |  |
Schedule of Investments [Line Items] |  |
Principal Amount | 128,000,000 | [1],[2]
Total short-term U.S. government and agency obligations, value | 127,793,370 | [1],[2]
ProShares Ultra VIX Short-Term Futures ETF [Member] | U.S. Treasury Bills 1.002% due 12/07/17 [Member] |  |
Schedule of Investments [Line Items] |  |
Principal Amount | 66,000,000 | [1],[2]
Total short-term U.S. government and agency obligations, value | 65,880,817 | [1],[2]
ProShares Ultra VIX Short-Term Futures ETF [Member] | U.S. Treasury Bills 1.000% due 12/14/17 [Member] |  |
Schedule of Investments [Line Items] |  |
Principal Amount | 20,000,000 | [1],[2]
Total short-term U.S. government and agency obligations, value | 19,961,066 | [1],[2]
ProShares UltraShort Bloomberg Crude Oil [Member] |  |
Schedule of Investments [Line Items] |  |
Total short-term U.S. government and agency obligations, value | 246,666,306 |
ProShares UltraShort Bloomberg Crude Oil [Member] | U.S. Treasury Bills 1.013% due 11/02/17 [Member] |  |
Schedule of Investments [Line Items] |  |
Principal Amount | 6,000,000 | [1],[3]
Total short-term U.S. government and agency obligations, value | 5,995,066 | [1],[3]
ProShares UltraShort Bloomberg Crude Oil [Member] | U.S. Treasury Bills 0.962% due 11/30/17 [Member] |  |
Schedule of Investments [Line Items] |  |
Principal Amount | 22,000,000 | [1],[3]
Total short-term U.S. government and agency obligations, value | 21,964,485 | [1],[3]
ProShares UltraShort Bloomberg Crude Oil [Member] | U.S. Treasury Bills 1.040% due 02/01/18 [Member] |  |
Schedule of Investments [Line Items] |  |
Principal Amount | 28,000,000 | [1]
Total short-term U.S. government and agency obligations, value | 27,899,418 | [1]
ProShares UltraShort Bloomberg Crude Oil [Member] | U.S. Treasury Bills 0.986% due 11/16/17 [Member] |  |
Schedule of Investments [Line Items] |  |
Principal Amount | 11,000,000 | [1],[3]
Total short-term U.S. government and agency obligations, value | 10,986,869 | [1],[3]
ProShares UltraShort Bloomberg Crude Oil [Member] | U.S. Treasury Bills 1.062% due 10/05/17 [Member] |  |
Schedule of Investments [Line Items] |  |
Principal Amount | 16,000,000 | [1]
Total short-term U.S. government and agency obligations, value | 15,999,013 | [1]
ProShares UltraShort Bloomberg Crude Oil [Member] | U.S. Treasury Bills 1.002% due 01/04/18 [Member] |  |
Schedule of Investments [Line Items] |  |
Principal Amount | 14,000,000 | [1]
Total short-term U.S. government and agency obligations, value | 13,962,714 | [1]
ProShares UltraShort Bloomberg Crude Oil [Member] | U.S. Treasury Bills 1.079% due 11/09/17 [Member] |  |
Schedule of Investments [Line Items] |  |
Principal Amount | 11,000,000 | [1],[3]
Total short-term U.S. government and agency obligations, value | 10,988,854 | [1],[3]
ProShares UltraShort Bloomberg Crude Oil [Member] | U.S. Treasury Bills 1.065% due 10/12/17 [Member] |  |
Schedule of Investments [Line Items] |  |
Principal Amount | 19,000,000 | [1]
Total short-term U.S. government and agency obligations, value | 18,995,039 | [1]
ProShares UltraShort Bloomberg Crude Oil [Member] | U.S. Treasury Bills 1.070% due 10/19/17 [Member] |  |
Schedule of Investments [Line Items] |  |
Principal Amount | 53,000,000 | [1],[3]
Total short-term U.S. government and agency obligations, value | 52,976,977 | [1],[3]
ProShares UltraShort Bloomberg Crude Oil [Member] | U.S. Treasury Bills 1.042% due 10/26/17 [Member] |  |
Schedule of Investments [Line Items] |  |
Principal Amount | 20,000,000 | [1],[3]
Total short-term U.S. government and agency obligations, value | 19,987,534 | [1],[3]
ProShares UltraShort Bloomberg Crude Oil [Member] | U.S. Treasury Bills 0.991% due 12/07/17 [Member] |  |
Schedule of Investments [Line Items] |  |
Principal Amount | 13,000,000 | [1],[3]
Total short-term U.S. government and agency obligations, value | 12,976,525 | [1],[3]
ProShares UltraShort Bloomberg Crude Oil [Member] | U.S. Treasury Bills 0.989% due 12/14/17 [Member] |  |
Schedule of Investments [Line Items] |  |
Principal Amount | 34,000,000 | [1],[3]
Total short-term U.S. government and agency obligations, value | 33,933,812 | [1],[3]
ProShares UltraShort Bloomberg Natural Gas [Member] |  |
Schedule of Investments [Line Items] |  |
Total short-term U.S. government and agency obligations, value | 2,998,697 |
ProShares UltraShort Bloomberg Natural Gas [Member] | U.S. Treasury Bills 1.013% due 10/19/17 [Member] |  |
Schedule of Investments [Line Items] |  |
Principal Amount | 3,000,000 | [1]
Total short-term U.S. government and agency obligations, value | 2,998,697 | [1]
ProShares UltraShort Gold [Member] |  |
Schedule of Investments [Line Items] |  |
Total short-term U.S. government and agency obligations, value | 34,940,087 |
ProShares UltraShort Gold [Member] | U.S. Treasury Bills 0.987% due 12/14/17 [Member] |  |
Schedule of Investments [Line Items] |  |
Principal Amount | 5,000,000 | [1],[4]
Total short-term U.S. government and agency obligations, value | 4,990,267 | [1],[4]
ProShares UltraShort Gold [Member] | U.S. Treasury Bills 1.001% due 01/11/18 [Member] |  |
Schedule of Investments [Line Items] |  |
Principal Amount | 5,000,000 | [1]
Total short-term U.S. government and agency obligations, value | 4,985,902 | [1]
ProShares UltraShort Gold [Member] | U.S. Treasury Bills 1.040% due 02/01/18 [Member] |  |
Schedule of Investments [Line Items] |  |
Principal Amount | 3,000,000 | [1]
Total short-term U.S. government and agency obligations, value | 2,989,223 | [1]
ProShares UltraShort Gold [Member] | U.S. Treasury Bills 1.062% due 10/05/17 [Member] |  |
Schedule of Investments [Line Items] |  |
Principal Amount | 11,000,000 | [1],[4]
Total short-term U.S. government and agency obligations, value | 10,999,321 | [1],[4]
ProShares UltraShort Gold [Member] | U.S. Treasury Bills 0.991% due 11/30/17 [Member] |  |
Schedule of Investments [Line Items] |  |
Principal Amount | 2,000,000 | [1],[4]
Total short-term U.S. government and agency obligations, value | 1,996,771 | [1],[4]
ProShares UltraShort Gold [Member] | U.S. Treasury Bills 0.972% due 12/07/17 [Member] |  |
Schedule of Investments [Line Items] |  |
Principal Amount | 3,000,000 | [1],[4]
Total short-term U.S. government and agency obligations, value | 2,994,583 | [1],[4]
ProShares UltraShort Gold [Member] | U.S. Treasury Bills 1.002% due 01/04/18 [Member] |  |
Schedule of Investments [Line Items] |  |
Principal Amount | 6,000,000 | [1]
Total short-term U.S. government and agency obligations, value | 5,984,020 | [1]
ProShares UltraShort Silver [Member] |  |
Schedule of Investments [Line Items] |  |
Total short-term U.S. government and agency obligations, value | 17,966,229 |
ProShares UltraShort Silver [Member] | U.S. Treasury Bills 0.962% due 11/30/17 [Member] |  |
Schedule of Investments [Line Items] |  |
Principal Amount | 6,000,000 | [1],[4]
Total short-term U.S. government and agency obligations, value | 5,990,314 | [1],[4]
ProShares UltraShort Silver [Member] | U.S. Treasury Bills 1.088% due 10/26/17 [Member] |  |
Schedule of Investments [Line Items] |  |
Principal Amount | 4,000,000 | [1],[4]
Total short-term U.S. government and agency obligations, value | 3,997,507 | [1],[4]
ProShares UltraShort Silver [Member] | U.S. Treasury Bills 1.012% due 12/07/17 [Member] |  |
Schedule of Investments [Line Items] |  |
Principal Amount | 4,000,000 | [1],[4]
Total short-term U.S. government and agency obligations, value | 3,992,777 | [1],[4]
ProShares UltraShort Silver [Member] | U.S. Treasury Bills 1.040% due 02/01/18 [Member] |  |
Schedule of Investments [Line Items] |  |
Principal Amount | 4,000,000 | [1]
Total short-term U.S. government and agency obligations, value | 3,985,631 | [1]
ProShares Short Euro [Member] |  |
Schedule of Investments [Line Items] |  |
Total short-term U.S. government and agency obligations, value | 5,998,433 |
ProShares Short Euro [Member] | U.S. Treasury Bills 1.089% due 10/12/17 [Member] |  |
Schedule of Investments [Line Items] |  |
Principal Amount | 6,000,000 | [1]
Total short-term U.S. government and agency obligations, value | 5,998,433 | [1]
ProShares UltraShort Australian Dollar [Member] |  |
Schedule of Investments [Line Items] |  |
Total short-term U.S. government and agency obligations, value | 7,997,911 |
ProShares UltraShort Australian Dollar [Member] | U.S. Treasury Bills 1.089% due 10/12/17 [Member] |  |
Schedule of Investments [Line Items] |  |
Principal Amount | 8,000,000 | [1]
Total short-term U.S. government and agency obligations, value | 7,997,911 | [1]
ProShares UltraShort Euro [Member] |  |
Schedule of Investments [Line Items] |  |
Total short-term U.S. government and agency obligations, value | 219,684,550 |
ProShares UltraShort Euro [Member] | U.S. Treasury Bills 0.998% due 10/05/17 [Member] |  |
Schedule of Investments [Line Items] |  |
Principal Amount | 9,000,000 | [1]
Total short-term U.S. government and agency obligations, value | 8,999,445 | [1]
ProShares UltraShort Euro [Member] | U.S. Treasury Bills 0.987% due 12/14/17 [Member] |  |
Schedule of Investments [Line Items] |  |
Principal Amount | 18,000,000 | [1],[5]
Total short-term U.S. government and agency obligations, value | 17,964,959 | [1],[5]
ProShares UltraShort Euro [Member] | U.S. Treasury Bills 1.001% due 01/11/18 [Member] |  |
Schedule of Investments [Line Items] |  |
Principal Amount | 25,000,000 | [1]
Total short-term U.S. government and agency obligations, value | 24,929,510 | [1]
ProShares UltraShort Euro [Member] | U.S. Treasury Bills 1.002% due 01/04/18 [Member] |  |
Schedule of Investments [Line Items] |  |
Principal Amount | 7,000,000 | [1]
Total short-term U.S. government and agency obligations, value | 6,981,357 | [1]
ProShares UltraShort Euro [Member] | U.S. Treasury Bills 1.057% due 10/12/17 [Member] |  |
Schedule of Investments [Line Items] |  |
Principal Amount | 40,000,000 | [1],[5]
Total short-term U.S. government and agency obligations, value | 39,989,556 | [1],[5]
ProShares UltraShort Euro [Member] | U.S. Treasury Bills 1.013% due 10/19/17 [Member] |  |
Schedule of Investments [Line Items] |  |
Principal Amount | 11,000,000 | [1],[5]
Total short-term U.S. government and agency obligations, value | 10,995,221 | [1],[5]
ProShares UltraShort Euro [Member] | U.S. Treasury Bills 1.015% due 10/26/17 [Member] |  |
Schedule of Investments [Line Items] |  |
Principal Amount | 41,000,000 | [1],[5]
Total short-term U.S. government and agency obligations, value | 40,974,445 | [1],[5]
ProShares UltraShort Euro [Member] | U.S. Treasury Bills 0.998% due 11/02/17 [Member] |  |
Schedule of Investments [Line Items] |  |
Principal Amount | 10,000,000 | [1]
Total short-term U.S. government and agency obligations, value | 9,991,776 | [1]
ProShares UltraShort Euro [Member] | U.S. Treasury Bills 1.079% due 11/09/17 [Member] |  |
Schedule of Investments [Line Items] |  |
Principal Amount | 20,000,000 | [1],[5]
Total short-term U.S. government and agency obligations, value | 19,979,734 | [1],[5]
ProShares UltraShort Euro [Member] | U.S. Treasury Bills 0.982% due 11/16/17 [Member] |  |
Schedule of Investments [Line Items] |  |
Principal Amount | 2,000,000 | [1],[5]
Total short-term U.S. government and agency obligations, value | 1,997,613 | [1],[5]
ProShares UltraShort Euro [Member] | U.S. Treasury Bills 0.962% due 11/30/17 [Member] |  |
Schedule of Investments [Line Items] |  |
Principal Amount | 7,000,000 | [1],[5]
Total short-term U.S. government and agency obligations, value | 6,988,700 | [1],[5]
ProShares UltraShort Euro [Member] | U.S. Treasury Bills 1.040% due 02/01/18 [Member] |  |
Schedule of Investments [Line Items] |  |
Principal Amount | 30,000,000 | [1]
Total short-term U.S. government and agency obligations, value | 29,892,234 | [1]
ProShares UltraShort Yen [Member] |  |
Schedule of Investments [Line Items] |  |
Total short-term U.S. government and agency obligations, value | 137,818,917 |
ProShares UltraShort Yen [Member] | U.S. Treasury Bills 0.998% due 10/05/17 [Member] |  |
Schedule of Investments [Line Items] |  |
Principal Amount | 15,000,000 | [1]
Total short-term U.S. government and agency obligations, value | 14,999,075 | [1]
ProShares UltraShort Yen [Member] | U.S. Treasury Bills 1.001% due 01/11/18 [Member] |  |
Schedule of Investments [Line Items] |  |
Principal Amount | 9,000,000 | [1]
Total short-term U.S. government and agency obligations, value | 8,974,624 | [1]
ProShares UltraShort Yen [Member] | U.S. Treasury Bills 0.992% due 10/26/17 [Member] |  |
Schedule of Investments [Line Items] |  |
Principal Amount | 9,000,000 | [1]
Total short-term U.S. government and agency obligations, value | 8,994,390 | [1]
ProShares UltraShort Yen [Member] | U.S. Treasury Bills 1.079% due 11/09/17 [Member] |  |
Schedule of Investments [Line Items] |  |
Principal Amount | 25,000,000 | [1],[5]
Total short-term U.S. government and agency obligations, value | 24,974,667 | [1],[5]
ProShares UltraShort Yen [Member] | U.S. Treasury Bills 0.962% due 11/30/17 [Member] |  |
Schedule of Investments [Line Items] |  |
Principal Amount | 17,000,000 | [1],[5]
Total short-term U.S. government and agency obligations, value | 16,972,557 | [1],[5]
ProShares UltraShort Yen [Member] | U.S. Treasury Bills 1.040% due 02/01/18 [Member] |  |
Schedule of Investments [Line Items] |  |
Principal Amount | 24,000,000 | [1]
Total short-term U.S. government and agency obligations, value | 23,913,787 | [1]
ProShares UltraShort Yen [Member] | U.S. Treasury Bills 1.075% due 10/12/17 [Member] |  |
Schedule of Investments [Line Items] |  |
Principal Amount | 39,000,000 | [1],[5]
Total short-term U.S. government and agency obligations, value | 38,989,817 | [1],[5]
ProShares Ultra Bloomberg Crude Oil [Member] |  |
Schedule of Investments [Line Items] |  |
Total short-term U.S. government and agency obligations, value | 562,359,737 |
ProShares Ultra Bloomberg Crude Oil [Member] | U.S. Treasury Bills 0.987% due 12/14/17 [Member] |  |
Schedule of Investments [Line Items] |  |
Principal Amount | 22,000,000 | [1],[3]
Total short-term U.S. government and agency obligations, value | 21,957,173 | [1],[3]
ProShares Ultra Bloomberg Crude Oil [Member] | U.S. Treasury Bills 1.001% due 01/11/18 [Member] |  |
Schedule of Investments [Line Items] |  |
Principal Amount | 40,000,000 | [1]
Total short-term U.S. government and agency obligations, value | 39,887,216 | [1]
ProShares Ultra Bloomberg Crude Oil [Member] | U.S. Treasury Bills 1.002% due 01/04/18 [Member] |  |
Schedule of Investments [Line Items] |  |
Principal Amount | 40,000,000 | [1]
Total short-term U.S. government and agency obligations, value | 39,893,468 | [1]
ProShares Ultra Bloomberg Crude Oil [Member] | U.S. Treasury Bills 1.089% due 10/12/17 [Member] |  |
Schedule of Investments [Line Items] |  |
Principal Amount | 50,000,000 | [1]
Total short-term U.S. government and agency obligations, value | 49,986,945 | [1]
ProShares Ultra Bloomberg Crude Oil [Member] | U.S. Treasury Bills 1.053% due 10/05/17 [Member] |  |
Schedule of Investments [Line Items] |  |
Principal Amount | 43,000,000 | [1]
Total short-term U.S. government and agency obligations, value | 42,997,347 | [1]
ProShares Ultra Bloomberg Crude Oil [Member] | U.S. Treasury Bills 1.077% due 10/19/17 [Member] |  |
Schedule of Investments [Line Items] |  |
Principal Amount | 78,000,000 | [1],[3]
Total short-term U.S. government and agency obligations, value | 77,966,117 | [1],[3]
ProShares Ultra Bloomberg Crude Oil [Member] | U.S. Treasury Bills 1.055% due 10/26/17 [Member] |  |
Schedule of Investments [Line Items] |  |
Principal Amount | 92,000,000 | [1],[3]
Total short-term U.S. government and agency obligations, value | 91,942,656 | [1],[3]
ProShares Ultra Bloomberg Crude Oil [Member] | U.S. Treasury Bills 1.062% due 11/02/17 [Member] |  |
Schedule of Investments [Line Items] |  |
Principal Amount | 45,000,000 | [1],[3]
Total short-term U.S. government and agency obligations, value | 44,962,992 | [1],[3]
ProShares Ultra Bloomberg Crude Oil [Member] | U.S. Treasury Bills 1.077% due 11/09/17 [Member] |  |
Schedule of Investments [Line Items] |  |
Principal Amount | 52,000,000 | [1],[3]
Total short-term U.S. government and agency obligations, value | 51,947,309 | [1],[3]
ProShares Ultra Bloomberg Crude Oil [Member] | U.S. Treasury Bills 0.977% due 11/16/17 [Member] |  |
Schedule of Investments [Line Items] |  |
Principal Amount | 27,000,000 | [1],[3]
Total short-term U.S. government and agency obligations, value | 26,967,770 | [1],[3]
ProShares Ultra Bloomberg Crude Oil [Member] | U.S. Treasury Bills 0.982% due 11/30/17 [Member] |  |
Schedule of Investments [Line Items] |  |
Principal Amount | 49,000,000 | [1],[3]
Total short-term U.S. government and agency obligations, value | 48,920,899 | [1],[3]
ProShares Ultra Bloomberg Crude Oil [Member] | U.S. Treasury Bills 0.970% due 12/07/17 [Member] |  |
Schedule of Investments [Line Items] |  |
Principal Amount | 11,000,000 | [1],[3]
Total short-term U.S. government and agency obligations, value | 10,980,136 | [1],[3]
ProShares Ultra Bloomberg Crude Oil [Member] | U.S. Treasury Bills 1.040% due 02/01/18 [Member] |  |
Schedule of Investments [Line Items] |  |
Principal Amount | 14,000,000 | [1]
Total short-term U.S. government and agency obligations, value | 13,949,709 | [1]
ProShares Ultra Bloomberg Natural Gas [Member] |  |
Schedule of Investments [Line Items] |  |
Total short-term U.S. government and agency obligations, value | 42,919,932 |
ProShares Ultra Bloomberg Natural Gas [Member] | U.S. Treasury Bills 1.013% due 11/02/17 [Member] |  |
Schedule of Investments [Line Items] |  |
Principal Amount | 5,000,000 | [1]
Total short-term U.S. government and agency obligations, value | 4,995,888 | [1]
ProShares Ultra Bloomberg Natural Gas [Member] | U.S. Treasury Bills 1.023% due 11/09/17 [Member] |  |
Schedule of Investments [Line Items] |  |
Principal Amount | 2,000,000 | [1]
Total short-term U.S. government and agency obligations, value | 1,997,973 | [1]
ProShares Ultra Bloomberg Natural Gas [Member] | U.S. Treasury Bills 0.987% due 12/14/17 [Member] |  |
Schedule of Investments [Line Items] |  |
Principal Amount | 7,000,000 | [1]
Total short-term U.S. government and agency obligations, value | 6,986,373 | [1]
ProShares Ultra Bloomberg Natural Gas [Member] | U.S. Treasury Bills 1.001% due 01/11/18 [Member] |  |
Schedule of Investments [Line Items] |  |
Principal Amount | 9,000,000 | [1]
Total short-term U.S. government and agency obligations, value | 8,974,624 | [1]
ProShares Ultra Bloomberg Natural Gas [Member] | U.S. Treasury Bills 1.040% due 02/01/18 [Member] |  |
Schedule of Investments [Line Items] |  |
Principal Amount | 8,000,000 | [1]
Total short-term U.S. government and agency obligations, value | 7,971,262 | [1]
ProShares Ultra Bloomberg Natural Gas [Member] | U.S. Treasury Bills 0.992% due 10/26/17 [Member] |  |
Schedule of Investments [Line Items] |  |
Principal Amount | 7,000,000 | [1]
Total short-term U.S. government and agency obligations, value | 6,995,637 | [1]
ProShares Ultra Bloomberg Natural Gas [Member] | U.S. Treasury Bills 1.013% due 10/19/17 [Member] |  |
Schedule of Investments [Line Items] |  |
Principal Amount | 3,000,000 | [1]
Total short-term U.S. government and agency obligations, value | 2,998,697 | [1]
ProShares Ultra Bloomberg Natural Gas [Member] | U.S. Treasury Bills 1.108% due 10/12/17 [Member] |  |
Schedule of Investments [Line Items] |  |
Principal Amount | 2,000,000 | [1]
Total short-term U.S. government and agency obligations, value | 1,999,478 | [1]
ProShares Ultra Gold [Member] |  |
Schedule of Investments [Line Items] |  |
Total short-term U.S. government and agency obligations, value | 101,900,580 |
ProShares Ultra Gold [Member] | U.S. Treasury Bills 0.987% due 12/14/17 [Member] |  |
Schedule of Investments [Line Items] |  |
Principal Amount | 12,000,000 | [1],[4]
Total short-term U.S. government and agency obligations, value | 11,976,639 | [1],[4]
ProShares Ultra Gold [Member] | U.S. Treasury Bills 1.001% due 01/11/18 [Member] |  |
Schedule of Investments [Line Items] |  |
Principal Amount | 12,000,000 | [1]
Total short-term U.S. government and agency obligations, value | 11,966,165 | [1]
ProShares Ultra Gold [Member] | U.S. Treasury Bills 1.023% due 12/07/17 [Member] |  |
Schedule of Investments [Line Items] |  |
Principal Amount | 10,000,000 | [1],[4]
Total short-term U.S. government and agency obligations, value | 9,981,942 | [1],[4]
ProShares Ultra Gold [Member] | U.S. Treasury Bills 1.013% due 10/19/17 [Member] |  |
Schedule of Investments [Line Items] |  |
Principal Amount | 12,000,000 | [1],[4]
Total short-term U.S. government and agency obligations, value | 11,994,787 | [1],[4]
ProShares Ultra Gold [Member] | U.S. Treasury Bills 1.079% due 11/09/17 [Member] |  |
Schedule of Investments [Line Items] |  |
Principal Amount | 10,000,000 | [1],[4]
Total short-term U.S. government and agency obligations, value | 9,989,867 | [1],[4]
ProShares Ultra Gold [Member] | U.S. Treasury Bills 1.018% due 10/05/17 [Member] |  |
Schedule of Investments [Line Items] |  |
Principal Amount | 16,000,000 | [1]
Total short-term U.S. government and agency obligations, value | 15,999,013 | [1]
ProShares Ultra Gold [Member] | U.S. Treasury Bills 1.046% due 10/12/17 [Member] |  |
Schedule of Investments [Line Items] |  |
Principal Amount | 30,000,000 | [1],[4]
Total short-term U.S. government and agency obligations, value | 29,992,167 | [1],[4]
ProShares Ultra Silver [Member] |  |
Schedule of Investments [Line Items] |  |
Total short-term U.S. government and agency obligations, value | 270,629,525 |
ProShares Ultra Silver [Member] | U.S. Treasury Bills 0.962% due 11/30/17 [Member] |  |
Schedule of Investments [Line Items] |  |
Principal Amount | 12,000,000 | [1],[4]
Total short-term U.S. government and agency obligations, value | 11,980,629 | [1],[4]
ProShares Ultra Silver [Member] | U.S. Treasury Bills 1.001% due 01/11/18 [Member] |  |
Schedule of Investments [Line Items] |  |
Principal Amount | 15,000,000 | [1]
Total short-term U.S. government and agency obligations, value | 14,957,706 | [1]
ProShares Ultra Silver [Member] | U.S. Treasury Bills 1.040% due 02/01/18 [Member] |  |
Schedule of Investments [Line Items] |  |
Principal Amount | 14,000,000 | [1]
Total short-term U.S. government and agency obligations, value | 13,949,709 | [1]
ProShares Ultra Silver [Member] | U.S. Treasury Bills 1.002% due 01/04/18 [Member] |  |
Schedule of Investments [Line Items] |  |
Principal Amount | 9,000,000 | [1]
Total short-term U.S. government and agency obligations, value | 8,976,030 | [1]
ProShares Ultra Silver [Member] | U.S. Treasury Bills 1.013% due 10/19/17 [Member] |  |
Schedule of Investments [Line Items] |  |
Principal Amount | 20,000,000 | [1],[4]
Total short-term U.S. government and agency obligations, value | 19,991,312 | [1],[4]
ProShares Ultra Silver [Member] | U.S. Treasury Bills 1.079% due 11/09/17 [Member] |  |
Schedule of Investments [Line Items] |  |
Principal Amount | 13,000,000 | [1],[4]
Total short-term U.S. government and agency obligations, value | 12,986,827 | [1],[4]
ProShares Ultra Silver [Member] | U.S. Treasury Bills 0.977% due 11/16/17 [Member] |  |
Schedule of Investments [Line Items] |  |
Principal Amount | 7,000,000 | [1],[4]
Total short-term U.S. government and agency obligations, value | 6,991,644 | [1],[4]
ProShares Ultra Silver [Member] | U.S. Treasury Bills 1.015% due 10/05/17 [Member] |  |
Schedule of Investments [Line Items] |  |
Principal Amount | 23,000,000 | [1]
Total short-term U.S. government and agency obligations, value | 22,998,581 | [1]
ProShares Ultra Silver [Member] | U.S. Treasury Bills 1.056% due 10/12/17 [Member] |  |
Schedule of Investments [Line Items] |  |
Principal Amount | 31,000,000 | [1],[4]
Total short-term U.S. government and agency obligations, value | 30,991,906 | [1],[4]
ProShares Ultra Silver [Member] | U.S. Treasury Bills 1.036% due 10/26/17 [Member] |  |
Schedule of Investments [Line Items] |  |
Principal Amount | 26,000,000 | [1],[4]
Total short-term U.S. government and agency obligations, value | 25,983,794 | [1],[4]
ProShares Ultra Silver [Member] | U.S. Treasury Bills 1.076% due 11/02/17 [Member] |  |
Schedule of Investments [Line Items] |  |
Principal Amount | 11,000,000 | [1],[4]
Total short-term U.S. government and agency obligations, value | 10,990,954 | [1],[4]
ProShares Ultra Silver [Member] | U.S. Treasury Bills 1.004% due 12/07/17 [Member] |  |
Schedule of Investments [Line Items] |  |
Principal Amount | 40,000,000 | [1],[4]
Total short-term U.S. government and agency obligations, value | 39,927,768 | [1],[4]
ProShares Ultra Silver [Member] | U.S. Treasury Bills 0.987% due 12/14/17 [Member] |  |
Schedule of Investments [Line Items] |  |
Principal Amount | 50,000,000 | [1],[4]
Total short-term U.S. government and agency obligations, value | 49,902,665 | [1],[4]
ProShares Ultra Euro [Member] |  |
Schedule of Investments [Line Items] |  |
Total short-term U.S. government and agency obligations, value | 10,995,765 |
ProShares Ultra Euro [Member] | U.S. Treasury Bills 1.070% due 10/19/17 [Member] |  |
Schedule of Investments [Line Items] |  |
Principal Amount | 5,000,000 | [1],[5]
Total short-term U.S. government and agency obligations, value | 4,997,331 | [1],[5]
ProShares Ultra Euro [Member] | U.S. Treasury Bills 1.025% due 10/12/17 [Member] |  |
Schedule of Investments [Line Items] |  |
Principal Amount | 6,000,000 | [1],[5]
Total short-term U.S. government and agency obligations, value | 5,998,434 | [1],[5]
ProShares Ultra Yen [Member] |  |
Schedule of Investments [Line Items] |  |
Total short-term U.S. government and agency obligations, value | 4,662,411 |
ProShares Ultra Yen [Member] | U.S. Treasury Bills 0.962% due 11/30/17 [Member] |  |
Schedule of Investments [Line Items] |  |
Principal Amount | 2,000,000 | [1]
Total short-term U.S. government and agency obligations, value | 1,996,771 | [1]
ProShares Ultra Yen [Member] | U.S. Treasury Bills 1.040% due 02/01/18 [Member] |  |
Schedule of Investments [Line Items] |  |
Principal Amount | 2,000,000 | [1]
Total short-term U.S. government and agency obligations, value | 1,992,816 | [1]
ProShares Ultra Yen [Member] | U.S. Treasury Bills 1.089% due 10/12/17 [Member] |  |
Schedule of Investments [Line Items] |  |
Principal Amount | 673,000 | [1],[5]
Total short-term U.S. government and agency obligations, value | $ 672,824 | [1],[5]
[1] | Rates shown represents discount rate at the time of purchase.
[2] | All or partial amount pledged as collateral for futures contracts.
[3] | All or partial amount pledged as collateral for swap agreements and/or futures contracts.
[4] | All or partial amount pledged as collateral for forward agreements and/or futures contracts.
[5] | All or partial amount pledged as collateral for foreign currency forward contracts.

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