v3.10.0.1
Financial Highlights - Per Share Operating Performance (Detail) - $ / shares
 3 Months Ended 6 Months Ended
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.