v3.10.0.1

Financial Highlights - Per Share Operating Performance (Detail) - $ / shares | 3 Months Ended | 6 Months Ended
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Jun. 30, 2018 | Jun. 30, 2017 | Jun. 30, 2018 | Jun. 30, 2017
ProShares Short Euro [Member] |  |  |  |  |  |  |  |  |
Investment Company, Financial Highlights [Line Items] |  |  |  |  |  |  |  |  |
Net asset value, beginning balance |  | $ 39.25 |  | $ 44.51 |  | $ 39.96 |  | $ 45.06 |
Net investment income (loss) |  | 0.04 |  | (0.04) |  | 0.04 |  | (0.10) |
Net realized and unrealized gain (loss) | [1] | 2.31 |  | (2.73) |  | 1.60 |  | (3.22) |
Change in net asset value from operations |  | 2.35 |  | (2.77) |  | 1.64 |  | (3.32) |
Net asset value, ending balance |  | 41.60 |  | 41.74 |  | 41.60 |  | 41.74 |
Market value per share, beginning balance | [2] | 39.04 |  | 44.29 |  | 39.99 |  | 45.12 |
Market value per share, ending balance | [2] | $ 41.53 |  | $ 41.71 |  | $ 41.53 |  | $ 41.71 |
Total Return, at net asset value |  | 6.00% | [3] | (6.20%) | [4] | 4.10% | [3] | (7.40%) | [4]
Total Return, at market value |  | 6.40% | [3] | (5.80%) | [4] | 3.90% | [3] | (7.60%) | [4]
Ratios to Average Net Assets |  |  |  |  |  |  |  |  |
Expense ratio | [5] | 0.97% |  | 0.96% |  | 0.97% |  | 0.96% |
Expense ratio, excluding brokerage commissions | [5] | 0.95% |  | 0.95% |  | 0.95% |  | 0.95% |
Net investment income (loss) | [5] | 0.39% |  | (0.33%) |  | 0.22% |  | (0.45%) |
ProShares Short VIX Short-Term Futures ETF [Member] |  |  |  |  |  |  |  |  |
Investment Company, Financial Highlights [Line Items] |  |  |  |  |  |  |  |  |
Net asset value, beginning balance |  | $ 11.59 |  | $ 70.54 | [6] | $ 127.30 |  | $ 45.62 | [6]
Net investment income (loss) |  | (0.01) |  | (0.16) | [6] | (0.05) |  | (0.33) | [6]
Net realized and unrealized gain (loss) | [1] | 1.19 |  | 9.73 | [6] | (114.48) |  | 34.82 | [6]
Change in net asset value from operations |  | 1.18 |  | 9.57 | [6] | (114.53) |  | 34.49 | [6]
Net asset value, ending balance |  | 12.77 |  | 80.11 | [6] | 12.77 |  | 80.11 | [6]
Market value per share, beginning balance | [2] | 11.74 |  | 70.58 | [6] | 128.21 |  | 45.49 | [6]
Market value per share, ending balance | [2] | $ 12.72 |  | $ 80.64 | [6] | $ 12.72 |  | $ 80.64 | [6]
Total Return, at net asset value |  | 10.20% | [3] | 13.60% | [4],[6] | (90.00%) | [3] | 75.60% | [4],[6]
Total Return, at market value |  | 8.30% | [3] | 14.30% | [4],[6] | (90.10%) | [3] | 77.30% | [4],[6]
Ratios to Average Net Assets |  |  |  |  |  |  |  |  |
Expense ratio | [5] | 1.27% |  | 1.50% | [6] | 1.44% |  | 1.54% | [6]
Expense ratio, excluding brokerage commissions | [5] | 0.95% |  | 0.95% | [6] | 0.95% |  | 0.95% | [6]
Net investment income (loss) | [5] | (0.42%) |  | (0.86%) | [6] | (0.63%) |  | (0.96%) | [6]
ProShares Ultra Bloomberg Crude Oil [Member] |  |  |  |  |  |  |  |  |
Investment Company, Financial Highlights [Line Items] |  |  |  |  |  |  |  |  |
Net asset value, beginning balance |  | $ 27.48 |  | $ 18.96 | [6] | $ 23.66 |  | $ 23.34 | [6]
Net investment income (loss) |  | 0.04 |  | (0.01) | [6] | 0.06 |  | (0.03) | [6]
Net realized and unrealized gain (loss) | [1] | 6.81 |  | (4.15) | [6] | 10.61 |  | (8.50) | [6]
Change in net asset value from operations |  | 6.85 |  | (4.16) | [6] | 10.67 |  | (8.53) | [6]
Net asset value, ending balance |  | 34.33 |  | 14.80 | [6] | 34.33 |  | 14.80 | [6]
Market value per share, beginning balance | [2] | 27.50 |  | 19.02 | [6] | 23.44 |  | 23.36 | [6]
Market value per share, ending balance | [2] | $ 34.38 |  | $ 14.86 | [6] | $ 34.38 |  | $ 14.86 | [6]
Total Return, at net asset value |  | 24.90% | [3] | (21.90%) | [4],[6] | 45.10% | [3] | (36.60%) | [4],[6]
Total Return, at market value |  | 25.00% | [3] | (21.90%) | [4],[6] | 46.70% | [3] | (36.40%) | [4],[6]
Ratios to Average Net Assets |  |  |  |  |  |  |  |  |
Expense ratio | [5] | 0.98% |  | 0.98% | [6] | 0.97% |  | 0.98% | [6]
Expense ratio, excluding brokerage commissions | [5] | 0.95% |  | 0.95% | [6] | 0.95% |  | 0.95% | [6]
Net investment income (loss) | [5] | 0.61% |  | (0.24%) | [6] | 0.45% |  | (0.35%) | [6]
ProShares Ultra Bloomberg Natural Gas [Member] |  |  |  |  |  |  |  |  |
Investment Company, Financial Highlights [Line Items] |  |  |  |  |  |  |  |  |
Net asset value, beginning balance | [6] | $ 27.48 |  | $ 61.36 |  | $ 32.64 |  | $ 94.24 |
Net investment income (loss) | [6] | 0.02 |  | (0.08) |  | 0.02 |  | (0.20) |
Net realized and unrealized gain (loss) | [1],[6] | 1.78 |  | (12.43) |  | (3.38) |  | (45.19) |
Change in net asset value from operations | [6] | 1.80 |  | (12.51) |  | (3.36) |  | (45.39) |
Net asset value, ending balance | [6] | 29.28 |  | 48.85 |  | 29.28 |  | 48.85 |
Market value per share, beginning balance | [2],[6] | 27.53 |  | 61.35 |  | 32.50 |  | 94.80 |
Market value per share, ending balance | [2],[6] | $ 29.27 |  | $ 48.70 |  | $ 29.27 |  | $ 48.70 |
Total Return, at net asset value | [6] | 6.60% | [3] | (20.40%) | [4] | (10.30%) | [3] | (48.20%) | [4]
Total Return, at market value | [6] | 6.30% | [3] | (20.60%) | [4] | (9.90%) | [3] | (48.60%) | [4]
Ratios to Average Net Assets |  |  |  |  |  |  |  |  |
Expense ratio | [5],[6] | 1.30% |  | 1.19% |  | 1.22% |  | 1.17% |
Expense ratio, excluding brokerage commissions | [5],[6] | 0.95% |  | 0.95% |  | 0.95% |  | 0.95% |
Net investment income (loss) | [5],[6] | 0.29% |  | (0.59%) |  | 0.16% |  | (0.68%) |
ProShares Ultra Euro [Member] |  |  |  |  |  |  |  |  |
Investment Company, Financial Highlights [Line Items] |  |  |  |  |  |  |  |  |
Net asset value, beginning balance |  | $ 18.10 |  | $ 14.24 |  | $ 17.44 |  | $ 14.02 |
Net investment income (loss) |  | 0.01 |  | (0.01) |  | 0.01 |  | (0.03) |
Net realized and unrealized gain (loss) | [1] | (2.02) |  | 1.93 |  | (1.36) |  | 2.17 |
Change in net asset value from operations |  | (2.01) |  | 1.92 |  | (1.35) |  | 2.14 |
Net asset value, ending balance |  | 16.09 |  | 16.16 |  | 16.09 |  | 16.16 |
Market value per share, beginning balance | [2] | 18.09 |  | 14.27 |  | 17.46 |  | 14.09 |
Market value per share, ending balance | [2] | $ 16.06 |  | $ 16.17 |  | $ 16.06 |  | $ 16.17 |
Total Return, at net asset value |  | (11.10%) | [3] | 13.40% | [4] | (7.70%) | [3] | 15.30% | [4]
Total Return, at market value |  | (11.20%) | [3] | 13.30% | [4] | (8.00%) | [3] | 14.80% | [4]
Ratios to Average Net Assets |  |  |  |  |  |  |  |  |
Expense ratio | [5] | 0.95% |  | 0.95% |  | 0.95% |  | 0.95% |
Expense ratio, excluding brokerage commissions | [5] | 0.95% |  | 0.95% |  | 0.95% |  | 0.95% |
Net investment income (loss) | [5] | 0.15% |  | (0.26%) |  | 0.10% |  | (0.36%) |
ProShares Ultra Gold [Member] |  |  |  |  |  |  |  |  |
Investment Company, Financial Highlights [Line Items] |  |  |  |  |  |  |  |  |
Net asset value, beginning balance |  | $ 41.44 |  | $ 38.33 |  | $ 39.88 |  | $ 32.90 |
Net investment income (loss) |  | 0.08 |  | (0.02) |  | 0.11 |  | (0.06) |
Net realized and unrealized gain (loss) | [1] | (5.03) |  | (0.56) |  | (3.50) |  | 4.91 |
Change in net asset value from operations |  | (4.95) |  | (0.58) |  | (3.39) |  | 4.85 |
Net asset value, ending balance |  | 36.49 |  | 37.75 |  | 36.49 |  | 37.75 |
Market value per share, beginning balance | [2] | 41.55 |  | 38.45 |  | 40.67 |  | 33.20 |
Market value per share, ending balance | [2] | $ 36.56 |  | $ 37.68 |  | $ 36.56 |  | $ 37.68 |
Total Return, at net asset value |  | (11.90%) | [3] | (1.50%) | [4] | (8.50%) | [3] | 14.70% | [4]
Total Return, at market value |  | (12.00%) | [3] | (2.00%) | [4] | (10.10%) | [3] | 13.50% | [4]
Ratios to Average Net Assets |  |  |  |  |  |  |  |  |
Expense ratio | [5] | 0.95% |  | 0.95% |  | 0.95% |  | 0.95% |
Expense ratio, excluding brokerage commissions | [5] | 0.95% |  | 0.95% |  | 0.95% |  | 0.95% |
Net investment income (loss) | [5] | 0.76% |  | (0.20%) |  | 0.56% |  | (0.34%) |
ProShares Ultra Silver [Member] |  |  |  |  |  |  |  |  |
Investment Company, Financial Highlights [Line Items] |  |  |  |  |  |  |  |  |
Net asset value, beginning balance |  | $ 30.83 |  | $ 40.60 |  | $ 33.55 |  | $ 33.44 |
Net investment income (loss) |  | 0.05 |  | (0.02) |  | 0.08 |  | (0.06) |
Net realized and unrealized gain (loss) | [1] | (1.50) |  | (7.35) |  | (4.25) |  | (0.15) |
Change in net asset value from operations |  | (1.45) |  | (7.37) |  | (4.17) |  | (0.21) |
Net asset value, ending balance |  | 29.38 |  | 33.23 |  | 29.38 |  | 33.23 |
Market value per share, beginning balance | [2] | 31.09 |  | 41.23 |  | 33.85 |  | 32.09 |
Market value per share, ending balance | [2] | $ 29.66 |  | $ 33.82 |  | $ 29.66 |  | $ 33.82 |
Total Return, at net asset value |  | (4.70%) | [3] | (18.10%) | [4] | (12.40%) | [3] | (0.60%) | [7]
Total Return, at market value |  | (4.60%) | [3] | (18.00%) | [4] | (12.40%) | [3] | 5.40% | [7]
Ratios to Average Net Assets |  |  |  |  |  |  |  |  |
Expense ratio | [5] | 0.95% |  | 0.95% |  | 0.95% |  | 0.95% |
Expense ratio, excluding brokerage commissions | [5] | 0.95% |  | 0.95% |  | 0.95% |  | 0.95% |
Net investment income (loss) | [5] | 0.68% |  | (0.19%) |  | 0.52% |  | (0.33%) |
ProShares Ultra VIX Short-Term Futures ETF [Member] |  |  |  |  |  |  |  |  |
Investment Company, Financial Highlights [Line Items] |  |  |  |  |  |  |  |  |
Net asset value, beginning balance |  | $ 19.00 |  | $ 64.77 | [6] | $ 10.33 |  | $ 173.93 | [6]
Net investment income (loss) |  | (0.03) |  | (0.15) | [6] | (0.07) |  | (0.42) | [6]
Net realized and unrealized gain (loss) | [1] | (6.72) |  | (25.30) | [6] | 1.99 |  | (134.19) | [6]
Change in net asset value from operations |  | (6.75) |  | (25.45) | [6] | 1.92 |  | (134.61) | [6]
Net asset value, ending balance |  | 12.25 |  | 39.32 | [6] | 12.25 |  | 39.32 | [6]
Market value per share, beginning balance | [2] | 18.53 |  | 64.68 | [6] | 10.21 |  | 175.00 | [6]
Market value per share, ending balance | [2] | $ 12.34 |  | $ 38.96 | [6] | $ 12.34 |  | $ 38.96 | [6]
Total Return, at net asset value |  | (35.50%) | [3] | (39.30%) | [4],[6] | 18.60% | [3] | (77.40%) | [6],[7]
Total Return, at market value |  | (33.40%) | [3] | (39.80%) | [4],[6] | 20.90% | [3] | (77.70%) | [6],[7]
Ratios to Average Net Assets |  |  |  |  |  |  |  |  |
Expense ratio | [5] | 1.57% |  | 1.88% | [6] | 1.74% |  | 1.81% | [6]
Expense ratio, excluding brokerage commissions | [5] | 0.95% |  | 0.95% | [6] | 0.95% |  | 0.95% | [6]
Net investment income (loss) | [5] | (1.02%) |  | (1.27%) | [6] | (1.11%) |  | (1.31%) | [6]
ProShares Ultra Yen [Member] |  |  |  |  |  |  |  |  |
Investment Company, Financial Highlights [Line Items] |  |  |  |  |  |  |  |  |
Net asset value, beginning balance |  | $ 63.48 |  | $ 60.42 |  | $ 57.32 |  | $ 55.43 |
Net investment income (loss) |  | (0.05) |  | (0.08) |  | (0.11) |  | (0.17) |
Net realized and unrealized gain (loss) | [1] | (5.55) |  | (1.66) |  | 0.67 |  | 3.42 |
Change in net asset value from operations |  | (5.60) |  | (1.74) |  | 0.56 |  | 3.26 |
Net asset value, ending balance |  | 57.88 |  | 58.68 |  | 57.88 |  | 58.68 |
Market value per share, beginning balance | [2] | 63.49 |  | 60.19 |  | 57.45 |  | 55.52 |
Market value per share, ending balance | [2] | $ 58.33 |  | $ 58.68 |  | $ 58.33 |  | $ 58.68 |
Total Return, at net asset value |  | (8.80%) | [3] | (2.90%) | [4] | 1.00% | [3] | 5.90% | [7]
Total Return, at market value |  | (8.10%) | [3] | (2.50%) | [4] | 1.50% | [3] | 5.70% | [7]
Ratios to Average Net Assets |  |  |  |  |  |  |  |  |
Expense ratio | [5] | 0.95% |  | 0.95% |  | 0.95% |  | 0.95% |
Expense ratio, excluding brokerage commissions | [5] | 0.95% |  | 0.95% |  | 0.95% |  | 0.95% |
Net investment income (loss) | [5] | (0.34%) |  | (0.49%) |  | (0.37%) |  | (0.57%) |
ProShares UltraShort Australian Dollar [Member] |  |  |  |  |  |  |  |  |
Investment Company, Financial Highlights [Line Items] |  |  |  |  |  |  |  |  |
Net asset value, beginning balance |  | $ 47.09 |  | $ 48.75 |  | $ 45.67 |  | $ 55.38 |
Net investment income (loss) |  | 0.03 |  | (0.05) |  | 0.03 |  | (0.13) |
Net realized and unrealized gain (loss) | [1] | 3.40 |  | (0.80) |  | 4.82 |  | (7.35) |
Change in net asset value from operations |  | 3.43 |  | (0.85) |  | 4.85 |  | (7.48) |
Net asset value, ending balance |  | 50.52 |  | 47.90 |  | 50.52 |  | 47.90 |
Market value per share, beginning balance | [2] | 47.18 |  | 49.00 |  | 45.72 |  | 55.24 |
Market value per share, ending balance | [2] | $ 51.20 |  | $ 47.80 |  | $ 51.20 |  | $ 47.80 |
Total Return, at net asset value |  | 7.30% | [3] | (1.70%) | [4] | 10.60% | [3] | (13.50%) | [7]
Total Return, at market value |  | 8.50% | [3] | (2.40%) | [4] | 12.00% | [3] | (13.50%) | [7]
Ratios to Average Net Assets |  |  |  |  |  |  |  |  |
Expense ratio | [5] | 1.02% |  | 1.01% |  | 1.02% |  | 1.01% |
Expense ratio, excluding brokerage commissions | [5] | 0.95% |  | 0.95% |  | 0.95% |  | 0.95% |
Net investment income (loss) | [5] | 0.26% |  | (0.42%) |  | 0.13% |  | (0.53%) |
ProShares UltraShort Bloomberg Crude Oil [Member] |  |  |  |  |  |  |  |  |
Investment Company, Financial Highlights [Line Items] |  |  |  |  |  |  |  |  |
Net asset value, beginning balance |  | $ 19.96 |  | $ 36.70 | [6] | $ 24.31 |  | $ 31.70 | [6]
Net investment income (loss) |  | 0.03 |  | (0.03) | [6] | 0.05 |  | (0.08) | [6]
Net realized and unrealized gain (loss) | [1] | (5.06) |  | 6.76 | [6] | (9.43) |  | 11.81 | [6]
Change in net asset value from operations |  | (5.03) |  | 6.73 | [6] | (9.38) |  | 11.74 | [6]
Net asset value, ending balance |  | 14.93 |  | 43.43 | [6] | 14.93 |  | 43.43 | [6]
Market value per share, beginning balance |  | 19.95 | [2] | 36.57 | [2],[6] | 24.56 | [2] | 31.65 | [6],[8]
Market value per share, ending balance | [2] | $ 14.91 |  | $ 43.21 | [6],[8] | $ 14.91 |  | $ 43.21 | [6],[8]
Total Return, at net asset value |  | (25.20%) | [3] | 18.30% | [4],[6] | (38.60%) | [3] | 37.00% | [4],[6]
Total Return, at market value |  | (25.30%) | [3] | 18.20% | [4],[6] | (39.30%) | [3] | 36.50% | [4],[6]
Ratios to Average Net Assets |  |  |  |  |  |  |  |  |
Expense ratio | [5] | 0.99% |  | 1.00% | [6] | 0.98% |  | 0.98% | [6]
Expense ratio, excluding brokerage commissions | [5] | 0.95% |  | 0.95% | [6] | 0.95% |  | 0.95% | [6]
Net investment income (loss) | [5] | 0.76% |  | (0.30%) | [6] | 0.53% |  | (0.43%) | [6]
ProShares UltraShort Bloomberg Natural Gas [Member] |  |  |  |  |  |  |  |  |
Investment Company, Financial Highlights [Line Items] |  |  |  |  |  |  |  |  |
Net asset value, beginning balance |  | $ 42.88 |  | $ 29.24 |  | $ 39.48 |  | $ 23.10 |
Net investment income (loss) |  | (0.02) |  | (0.06) |  | (0.08) |  | (0.13) |
Net realized and unrealized gain (loss) | [1] | (4.27) |  | 3.98 |  | (0.81) |  | 10.20 |
Change in net asset value from operations |  | (4.29) |  | 3.92 |  | (0.89) |  | 10.06 |
Net asset value, ending balance |  | 38.59 |  | 33.16 |  | 38.59 |  | 33.16 |
Market value per share, beginning balance |  | 42.83 | [2] | 29.25 | [2] | 39.65 | [2] | 23.05 | [8]
Market value per share, ending balance | [2] | $ 38.62 |  | $ 33.33 | [8] | $ 38.62 |  | $ 33.33 | [8]
Total Return, at net asset value |  | (10.00%) | [3] | 13.40% | [4] | (2.30%) | [3] | 43.60% | [4]
Total Return, at market value |  | (9.80%) | [3] | 13.90% | [4] | (2.60%) | [3] | 44.60% | [4]
Ratios to Average Net Assets |  |  |  |  |  |  |  |  |
Expense ratio | [5] | 1.36% |  | 1.31% |  | 1.39% |  | 1.30% |
Expense ratio, excluding brokerage commissions | [5] | 0.95% |  | 0.95% |  | 0.95% |  | 0.95% |
Net investment income (loss) | [5] | (0.19%) |  | (0.81%) |  | (0.39%) |  | (0.89%) |
Proshares Ultra Pro 3x Crude Oil ETF [Member] |  |  |  |  |  |  |  |  |
Investment Company, Financial Highlights [Line Items] |  |  |  |  |  |  |  |  |
Net asset value, beginning balance |  | $ 46.30 |  | $ 29.24 |  | $ 37.78 |  | $ 25.00 | [9]
Net investment income (loss) |  | (0.15) |  | (0.07) |  | (0.27) |  | (0.08) | [9]
Net realized and unrealized gain (loss) | [1] | 16.63 |  | (9.65) |  | 25.27 |  | (5.40) | [9]
Change in net asset value from operations |  | 16.48 |  | (9.72) |  | 25.00 |  | (5.48) | [9]
Net asset value, ending balance |  | 62.78 |  | 19.52 | [9] | 62.78 |  | 19.52 | [9]
Market value per share, beginning balance | [2] | 46.33 |  | 29.42 |  | 37.23 |  | 25.00 | [9]
Market value per share, ending balance | [2] | $ 63.02 |  | $ 19.68 | [9] | $ 63.02 |  | $ 19.68 | [9]
Total Return, at net asset value |  | 35.60% | [3] | (33.20%) | [4] | 66.20% | [3] | (21.90%) | [7],[9]
Total Return, at market value |  | 36.00% | [3] | (33.10%) | [4] | 69.30% | [3] | (21.30%) | [7],[9]
Ratios to Average Net Assets |  |  |  |  |  |  |  |  |
Expense ratio | [5] | 1.19% |  | 1.27% |  | 1.18% |  | 1.29% | [9]
Expense ratio, excluding brokerage commissions | [5] | 0.95% |  | 0.95% |  | 0.95% |  | 0.95% | [9]
Net investment income (loss) | [5] | (1.15%) |  | (1.27%) |  | (1.12%) |  | (1.29%) | [9]
ProShares UltraPro 3X Short Crude Oil ETF [Member] |  |  |  |  |  |  |  |  |
Investment Company, Financial Highlights [Line Items] |  |  |  |  |  |  |  |  |
Net asset value, beginning balance | [6] | $ 30.80 |  | $ 84.63 |  | $ 42.32 |  | $ 100.00 | [9]
Net investment income (loss) | [6] | (0.08) |  | (0.32) |  | (0.17) |  | (0.36) | [9]
Net realized and unrealized gain (loss) | [1],[6] | (11.41) |  | 21.53 |  | (22.84) |  | 6.20 | [9]
Change in net asset value from operations | [6] | (11.49) |  | 21.21 |  | (23.01) |  | 5.84 | [9]
Net asset value, ending balance | [6] | 19.31 |  | 105.84 | [9] | 19.31 |  | 105.84 | [9]
Market value per share, beginning balance | [2],[6] | 30.77 |  | 84.28 |  | 42.88 |  | 100.00 | [9]
Market value per share, ending balance | [2],[6] | $ 19.27 |  | $ 104.96 | [9] | $ 19.27 |  | $ 104.96 | [9]
Total Return, at net asset value | [6] | (37.30%) | [3] | 25.10% | [4] | (54.40%) | [3] | 5.80% | [7],[9]
Total Return, at market value | [6] | (37.40%) | [3] | 24.50% | [4] | (55.10%) | [3] | 5.00% | [7],[9]
Ratios to Average Net Assets |  |  |  |  |  |  |  |  |
Expense ratio | [5],[6] | 1.23% |  | 1.34% |  | 1.22% |  | 1.37% | [9]
Expense ratio, excluding brokerage commissions | [5],[6] | 0.95% |  | 0.95% |  | 0.95% |  | 0.95% | [9]
Net investment income (loss) | [5],[6] | (1.19%) |  | (1.34%) |  | (1.16%) |  | (1.37%) | [9]
ProShares UltraShort Euro [Member] |  |  |  |  |  |  |  |  |
Investment Company, Financial Highlights [Line Items] |  |  |  |  |  |  |  |  |
Net asset value, beginning balance |  | $ 20.33 |  | $ 26.42 |  | $ 21.21 |  | $ 27.08 |
Net investment income (loss) |  | 0.04 |  | (0.01) |  | 0.05 |  | (0.04) |
Net realized and unrealized gain (loss) | [1] | 2.42 |  | (3.29) |  | 1.53 |  | (3.92) |
Change in net asset value from operations |  | 2.46 |  | (3.30) |  | 1.58 |  | (3.96) |
Net asset value, ending balance |  | 22.79 |  | 23.12 |  | 22.79 |  | 23.12 |
Market value per share, beginning balance |  | 20.32 | [2] | 26.39 | [2] | 21.20 | [2] | 27.08 | [8]
Market value per share, ending balance | [2] | $ 22.79 |  | $ 23.12 | [8] | $ 22.79 |  | $ 23.12 | [8]
Total Return, at net asset value |  | 12.10% | [3] | (12.50%) | [4] | 7.40% | [3] | (14.60%) | [4]
Total Return, at market value |  | 12.20% | [3] | (12.40%) | [4] | 7.50% | [3] | (14.60%) | [4]
Ratios to Average Net Assets |  |  |  |  |  |  |  |  |
Expense ratio | [5] | 0.95% |  | 0.95% |  | 0.95% |  | 0.95% |
Expense ratio, excluding brokerage commissions | [5] | 0.95% |  | 0.95% |  | 0.95% |  | 0.95% |
Net investment income (loss) | [5] | 0.66% |  | (0.19%) |  | 0.51% |  | (0.33%) |
ProShares UltraShort Gold [Member] |  |  |  |  |  |  |  |  |
Investment Company, Financial Highlights [Line Items] |  |  |  |  |  |  |  |  |
Net asset value, beginning balance |  | $ 67.14 |  | $ 76.40 |  | $ 70.47 |  | $ 91.33 |
Net investment income (loss) |  | 0.12 |  | (0.04) |  | 0.17 |  | (0.13) |
Net realized and unrealized gain (loss) | [1] | 8.39 |  | (0.06) |  | 5.01 |  | (14.90) |
Change in net asset value from operations |  | 8.51 |  | (0.10) |  | 5.18 |  | (15.03) |
Net asset value, ending balance |  | 75.65 |  | 76.30 |  | 75.65 |  | 76.30 |
Market value per share, beginning balance |  | 66.98 | [2] | 75.93 | [2] | 69.11 | [2] | 90.54 | [8]
Market value per share, ending balance | [2] | $ 75.39 |  | $ 76.37 | [8] | $ 75.39 |  | $ 76.37 | [8]
Total Return, at net asset value |  | 12.70% | [3] | (0.10%) | [4] | 7.40% | [3] | (16.50%) | [4]
Total Return, at market value |  | 12.60% | [3] | 0.60% | [4] | 9.10% | [3] | (15.60%) | [4]
Ratios to Average Net Assets |  |  |  |  |  |  |  |  |
Expense ratio | [5] | 0.95% |  | 0.95% |  | 0.95% |  | 0.95% |
Expense ratio, excluding brokerage commissions | [5] | 0.95% |  | 0.95% |  | 0.95% |  | 0.95% |
Net investment income (loss) | [5] | 0.68% |  | (0.21%) |  | 0.49% |  | (0.34%) |
ProShares UltraShort Silver [Member] |  |  |  |  |  |  |  |  |
Investment Company, Financial Highlights [Line Items] |  |  |  |  |  |  |  |  |
Net asset value, beginning balance |  | $ 33.93 |  | $ 29.38 |  | $ 31.71 |  | $ 37.31 |
Net investment income (loss) |  | 0.05 |  | (0.02) |  | 0.07 |  | (0.06) |
Net realized and unrealized gain (loss) | [1] | 0.79 |  | 5.39 |  | 2.99 |  | (2.50) |
Change in net asset value from operations |  | 0.84 |  | 5.37 |  | 3.06 |  | (2.56) |
Net asset value, ending balance |  | 34.77 |  | 34.75 |  | 34.77 |  | 34.75 |
Market value per share, beginning balance |  | 33.54 | [2] | 28.90 | [2] | 31.40 | [2] | 38.76 | [8]
Market value per share, ending balance | [2] | $ 34.40 |  | $ 34.09 | [8] | $ 34.40 |  | $ 34.09 | [8]
Total Return, at net asset value |  | 2.50% | [3] | 18.30% | [4] | 9.60% | [3] | (6.90%) | [4]
Total Return, at market value |  | 2.60% | [3] | 18.00% | [4] | 9.60% | [3] | (12.00%) | [4]
Ratios to Average Net Assets |  |  |  |  |  |  |  |  |
Expense ratio | [5] | 0.95% |  | 0.95% |  | 0.95% |  | 0.95% |
Expense ratio, excluding brokerage commissions | [5] | 0.95% |  | 0.95% |  | 0.95% |  | 0.95% |
Net investment income (loss) | [5] | 0.61% |  | (0.27%) |  | 0.45% |  | (0.37%) |
ProShares UltraShort Yen [Member] |  |  |  |  |  |  |  |  |
Investment Company, Financial Highlights [Line Items] |  |  |  |  |  |  |  |  |
Net asset value, beginning balance |  | $ 67.20 |  | $ 72.55 |  | $ 74.93 |  | $ 80.24 |
Net investment income (loss) |  | 0.12 |  | (0.04) |  | 0.18 |  | (0.13) |
Net realized and unrealized gain (loss) | [1] | 6.17 |  | 1.56 |  | (1.62) |  | (6.04) |
Change in net asset value from operations |  | 6.29 |  | 1.52 |  | (1.44) |  | (6.17) |
Net asset value, ending balance |  | 73.49 |  | 74.07 |  | 73.49 |  | 74.07 |
Market value per share, beginning balance |  | 67.14 | [2] | 72.50 | [2] | 74.98 | [2] | 80.25 | [8]
Market value per share, ending balance | [2] | $ 73.44 |  | $ 74.05 | [8] | $ 73.44 |  | $ 74.05 | [8]
Total Return, at net asset value |  | 9.40% | [3] | 2.10% | [4] | (1.90%) | [3] | (7.70%) | [4]
Total Return, at market value |  | 9.40% | [3] | 2.10% | [4] | (2.10%) | [3] | (7.70%) | [4]
Ratios to Average Net Assets |  |  |  |  |  |  |  |  |
Expense ratio | [5] | 0.95% |  | 0.95% |  | 0.95% |  | 0.95% |
Expense ratio, excluding brokerage commissions | [5] | 0.95% |  | 0.95% |  | 0.95% |  | 0.95% |
Net investment income (loss) | [5] | 0.70% |  | (0.20%) |  | 0.51% |  | (0.36%) |
ProShares VIX Mid-Term Futures ETF [Member] |  |  |  |  |  |  |  |  |
Investment Company, Financial Highlights [Line Items] |  |  |  |  |  |  |  |  |
Net asset value, beginning balance |  | $ 26.61 |  | $ 31.90 |  | $ 21.29 |  | $ 42.14 |
Net investment income (loss) |  | 0.00 | [10] | (0.02) |  | 0.00 | [10] | (0.06) |
Net realized and unrealized gain (loss) | [1] | (3.58) |  | (4.42) |  | 1.74 |  | (14.61) |
Change in net asset value from operations |  | (3.58) |  | (4.44) |  | 1.74 |  | (14.67) |
Net asset value, ending balance |  | 23.03 |  | 27.46 |  | 23.03 |  | 27.46 |
Market value per share, beginning balance | [2] | 26.45 |  | 31.95 |  | 21.15 |  | 42.34 |
Market value per share, ending balance | [2] | $ 23.02 |  | $ 27.43 |  | $ 23.02 |  | $ 27.43 |
Total Return, at net asset value |  | (13.50%) | [3] | (13.90%) | [4] | 8.20% | [3] | (34.80%) | [11]
Total Return, at market value |  | (13.00%) | [3] | (14.10%) | [4] | 8.80% | [3] | (35.20%) | [11]
Ratios to Average Net Assets |  |  |  |  |  |  |  |  |
Expense ratio | [5] | 0.91% |  | 0.87% |  | 0.98% |  | 0.88% |
Expense ratio, excluding brokerage commissions | [5] | 0.85% |  | 0.85% |  | 0.85% |  | 0.85% |
Net investment income (loss) | [5] | 0.06% |  | (0.28%) |  | (0.01%) |  | (0.37%) |
ProShares VIX Short-Term Futures ETF [Member] |  |  |  |  |  |  |  |  |
Investment Company, Financial Highlights [Line Items] |  |  |  |  |  |  |  |  |
Net asset value, beginning balance |  | $ 39.76 |  | $ 52.72 | [6] | $ 23.34 |  | $ 84.86 | [6]
Net investment income (loss) |  | (0.01) |  | (0.04) | [6] | (0.02) |  | (0.11) | [6]
Net realized and unrealized gain (loss) | [1] | (9.33) |  | (9.99) | [6] | 7.10 |  | (42.06) | [6]
Change in net asset value from operations |  | (9.34) |  | (10.03) | [6] | 7.08 |  | (42.17) | [6]
Net asset value, ending balance |  | 30.42 |  | 42.69 | [6] | 30.42 |  | 42.69 | [6]
Market value per share, beginning balance | [2] | 39.15 |  | 52.68 | [6] | 23.15 |  | 85.04 | [6]
Market value per share, ending balance | [2] | $ 30.52 |  | $ 42.52 | [6] | $ 30.52 |  | $ 42.52 | [6]
Total Return, at net asset value |  | (23.50%) | [3] | (19.00%) | [4],[6] | 30.30% | [3] | (49.70%) | [6],[11]
Total Return, at market value |  | (22.00%) | [3] | (19.30%) | [4],[6] | 31.80% | [3] | (50.00%) | [6],[11]
Ratios to Average Net Assets |  |  |  |  |  |  |  |  |
Expense ratio | [5] | 0.97% |  | 0.97% | [6] | 1.03% |  | 0.96% | [6]
Expense ratio, excluding brokerage commissions | [5] | 0.85% |  | 0.85% | [6] | 0.85% |  | 0.85% | [6]
Net investment income (loss) | [5] | (0.06%) |  | (0.30%) | [6] | (0.12%) |  | (0.40%) | [6]
[1] | The amount shown for a share outstanding throughout the period may not accord with the change in aggregate gains and losses during the period because of timing of creation and redemption units in relation to fluctuating net asset value during the period.
[2] | Market values are determined at the close of the New York Stock Exchange, which may be later than when the Funds' net asset value is calculated.
[3] | Percentages are not annualized for the period ended June 30, 2018.
[4] | Percentages are not annualized for the period ended June 30, 2017.
[5] | Percentages are annualized.
[6] | See Note 1 of these Notes to Financial Statements.
[7] | Percentages are not annualized for the period ended June 30, 2017. For ProShares UltraPro 3x Crude Oil ETF and ProShares UltraPro 3x Short Crude Oil ETF the returns shares outstanding for the period from commencement of operations through June 30, 2017 are calculated based on the initial offering price upon commencement of operations of $25.00 and $100.00 respectively.
[8] | Market values are determined at the close of the New York Stock Exchange, which may be later than when the Funds' net asset value is calculated
[9] | From commencement of operations, March 24, 2017 through June 30, 2017.
[10] | Amount represents less than $0.005.
[11] | Percentages are not annualized for the period June 30, 2017.

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