v3.24.1.u1
Financial Highlights - Per Share Operating Performance (Detail) - $ / shares
 3 Months Ended
Mar. 31, 2024
Mar. 31, 2023
ProShares Short VIX Short-Term Futures ETF [Member]    
Investment Company, Financial Highlights [Line Items]    
Net asset value, beginning balance [1] $ 51.69 $ 29.35
Net investment income (loss) [1] 0.41 0.18
Net realized and unrealized gain (loss) [1],[2] 4.28 2.33
Change in net asset value from operations [1] 4.69 2.51
Net asset value, ending balance [1] 56.38 31.86
Market value per share, beginning balance [1],[3] 51.7 29.34
Market value per share, ending balance [1],[3] $ 56.37 $ 31.88
Total Return, at net asset value [1] 9.10% [4] 8.60% [5]
Total Return, at market value [1] 9.00% [4] 8.60% [5]
Ratios to Average Net Assets    
Expense ratio [1],[6],[7] 1.17% 1.16%
Net investment income gain (loss) [1],[6] 3.08% 2.38%
ProShares Ultra Bloomberg Crude Oil [Member]    
Investment Company, Financial Highlights [Line Items]    
Net asset value, beginning balance $ 26.28 $ 30.26
Net investment income (loss) 0.16 0.14
Net realized and unrealized gain (loss) [2] 6.75 (3.87)
Change in net asset value from operations 6.91 (3.73)
Net asset value, ending balance 33.19 26.53
Market value per share, beginning balance [3] 26.1 30.31
Market value per share, ending balance [3] $ 33 $ 26.47
Total Return, at net asset value 26.30% [4] (12.30%) [5]
Total Return, at market value 26.40% [4] (12.70%) [5]
Ratios to Average Net Assets    
Expense ratio [6],[7] 0.99% 1.00%
Net investment income gain (loss) [6] 2.23% 2.05%
ProShares Ultra Bloomberg Natural Gas [Member]    
Investment Company, Financial Highlights [Line Items]    
Net asset value, beginning balance $ 28.55 $ 363.08 [8]
Net investment income (loss) 0.13 0.67 [8]
Net realized and unrealized gain (loss) [2] (15.55) (289.99) [8]
Change in net asset value from operations (15.42) (289.32) [8]
Net asset value, ending balance 13.13 73.76 [8]
Market value per share, beginning balance [3] 28.44 355.6 [8]
Market value per share, ending balance [3] $ 12.86 $ 72.2 [8]
Total Return, at net asset value (54.00%) [4] (79.70%) [5],[8]
Total Return, at market value (54.80%) [4] (79.70%) [5],[8]
Ratios to Average Net Assets    
Expense ratio [6],[7] 1.47% 1.42% [8]
Net investment income gain (loss) [6] 2.76% 2.24% [8]
ProShares Ultra Euro [Member]    
Investment Company, Financial Highlights [Line Items]    
Net asset value, beginning balance $ 11.86 $ 11.27
Net investment income (loss) 0.11 0.08
Net realized and unrealized gain (loss) [2] (0.63) 0.14
Change in net asset value from operations (0.52) 0.22
Net asset value, ending balance 11.34 11.49
Market value per share, beginning balance [3] 11.84 11.26
Market value per share, ending balance [3] $ 11.32 $ 11.49
Total Return, at net asset value (4.40%) [4] 2.00% [5]
Total Return, at market value (4.40%) [4] 2.00% [5]
Ratios to Average Net Assets    
Expense ratio [6],[7] 0.95% 0.95%
Net investment income gain (loss) [6] 3.73% 2.86%
ProShares Ultra Gold [Member]    
Investment Company, Financial Highlights [Line Items]    
Net asset value, beginning balance $ 63.83 $ 55.09
Net investment income (loss) 0.54 0.39
Net realized and unrealized gain (loss) [2] 7.62 7.38
Change in net asset value from operations 8.16 7.77
Net asset value, ending balance 71.99 62.86
Market value per share, beginning balance [3] 63.87 55.27
Market value per share, ending balance [3] $ 72.26 $ 63.02
Total Return, at net asset value 12.80% [4] 14.10% [5]
Total Return, at market value 13.10% [4] 14.00% [5]
Ratios to Average Net Assets    
Expense ratio [6],[7] 0.97% 0.97%
Net investment income gain (loss) [6] 3.41% 2.70%
ProShares Ultra Silver [Member]    
Investment Company, Financial Highlights [Line Items]    
Net asset value, beginning balance $ 27.29 $ 31.75
Net investment income (loss) 0.19 0.19
Net realized and unrealized gain (loss) [2] 1.05 (0.84)
Change in net asset value from operations 1.24 (0.65)
Net asset value, ending balance 28.53 31.1
Market value per share, beginning balance [3] 27.17 32
Market value per share, ending balance [3] $ 28.74 $ 31.23
Total Return, at net asset value 4.60% [4] (2.00%) [5]
Total Return, at market value 5.80% [4] (2.40%) [5]
Ratios to Average Net Assets    
Expense ratio [6],[7] 0.98% 0.98%
Net investment income gain (loss) [6] 2.97% 2.70%
ProShares Ultra VIX Short-Term Futures ETF [Member]    
Investment Company, Financial Highlights [Line Items]    
Net asset value, beginning balance $ 42.17 [1] $ 343.43 [9]
Net investment income (loss) 0.2 [1] 0.98 [9]
Net realized and unrealized gain (loss) [2] (10.91) [1] (113.14) [9]
Change in net asset value from operations (10.71) [1] (112.16) [9]
Net asset value, ending balance 31.46 [1] 231.27 [9]
Market value per share, beginning balance [3] 42.2 [1] 343 [9]
Market value per share, ending balance [3] $ 31.6 [1] $ 232.5 [9]
Total Return, at net asset value (25.40%) [1],[4] (32.70%) [5],[9]
Total Return, at market value (25.10%) [1],[4] (32.20%) [5],[9]
Ratios to Average Net Assets    
Expense ratio [6],[7] 1.77% [1] 1.57% [9]
Net investment income gain (loss) [6] 2.16% [1] 1.48% [9]
ProShares Ultra Yen [Member]    
Investment Company, Financial Highlights [Line Items]    
Net asset value, beginning balance $ 27.46 $ 34.54
Net investment income (loss) 0.22 0.23
Net realized and unrealized gain (loss) [2] (4.35) (1.72)
Change in net asset value from operations (4.13) (1.49)
Net asset value, ending balance 23.33 33.05
Market value per share, beginning balance [3] 27.49 34.56
Market value per share, ending balance [3] $ 23.35 $ 33.02
Total Return, at net asset value (15.10%) [4] (4.30%) [5]
Total Return, at market value (15.10%) [4] (4.50%) [5]
Ratios to Average Net Assets    
Expense ratio [6],[7] 0.95% 0.95%
Net investment income gain (loss) [6] 3.60% 2.78%
ProShares UltraShort Bloomberg Crude Oil [Member]    
Investment Company, Financial Highlights [Line Items]    
Net asset value, beginning balance $ 20.75 $ 23.93
Net investment income (loss) 0.17 0.18
Net realized and unrealized gain (loss) [2] (5) 1.04
Change in net asset value from operations (4.83) 1.22
Net asset value, ending balance 15.92 25.15
Market value per share, beginning balance [3] 20.89 23.85
Market value per share, ending balance [3] $ 16.02 $ 25.22
Total Return, at net asset value (23.30%) [4] 5.10% [5]
Total Return, at market value (23.30%) [4] 5.80% [5]
Ratios to Average Net Assets    
Expense ratio [6],[7] 1.06% 1.08%
Net investment income gain (loss) [6] 3.65% 2.85%
ProShares UltraShort Bloomberg Natural Gas [Member]    
Investment Company, Financial Highlights [Line Items]    
Net asset value, beginning balance [1] $ 48.05 $ 13.5
Net investment income (loss) [1] 0.4 0.13
Net realized and unrealized gain (loss) [1],[2] 28.02 21.93
Change in net asset value from operations [1] 28.42 22.06
Net asset value, ending balance [1] 76.47 35.56
Market value per share, beginning balance [1],[3] 48.21 13.78
Market value per share, ending balance [1],[3] $ 78.35 $ 36.21
Total Return, at net asset value [1] 59.20% [4] 163.40% [5]
Total Return, at market value [1] 62.50% [4] 162.80% [5]
Ratios to Average Net Assets    
Expense ratio [1],[6],[7] 1.95% 1.72%
Net investment income gain (loss) [1],[6] 2.92% 2.08%
ProShares UltraShort Euro [Member]    
Investment Company, Financial Highlights [Line Items]    
Net asset value, beginning balance $ 29.16 $ 29.46
Net investment income (loss) 0.27 0.21
Net realized and unrealized gain (loss) [2] 1.54 (0.63)
Change in net asset value from operations 1.81 (0.42)
Net asset value, ending balance 30.97 29.04
Market value per share, beginning balance [3] 29.15 29.45
Market value per share, ending balance [3] $ 30.96 $ 29.04
Total Return, at net asset value 6.20% [4] (1.40%) [5]
Total Return, at market value 6.20% [4] (1.40%) [5]
Ratios to Average Net Assets    
Expense ratio [6],[7] 0.95% 0.95%
Net investment income gain (loss) [6] 3.62% 2.85%
ProShares UltraShort Gold [Member]    
Investment Company, Financial Highlights [Line Items]    
Net asset value, beginning balance $ 26.39 $ 31.1
Net investment income (loss) 0.21 0.18
Net realized and unrealized gain (loss) [2] (3.15) (4.4)
Change in net asset value from operations (2.94) (4.22)
Net asset value, ending balance 23.45 26.88
Market value per share, beginning balance [3] 26.37 30.99
Market value per share, ending balance [3] $ 23.38 $ 26.84
Total Return, at net asset value (11.10%) [4] (13.60%) [5]
Total Return, at market value (11.30%) [4] (13.40%) [5]
Ratios to Average Net Assets    
Expense ratio [6],[7] 0.98% 0.99%
Net investment income gain (loss) [6] 3.22% 2.48%
ProShares UltraShort Silver [Member]    
Investment Company, Financial Highlights [Line Items]    
Net asset value, beginning balance $ 18.14 $ 19.46
Net investment income (loss) 0.14 0.11
Net realized and unrealized gain (loss) [2] (1.46) (0.94)
Change in net asset value from operations (1.32) (0.83)
Net asset value, ending balance 16.82 18.63
Market value per share, beginning balance [3] 18.24 19.3
Market value per share, ending balance [3] $ 16.71 $ 18.56
Total Return, at net asset value (7.30%) [4] (4.20%) [5]
Total Return, at market value (8.40%) [4] (3.80%) [5]
Ratios to Average Net Assets    
Expense ratio [6],[10] 1.01% 1.04%
Net investment income gain (loss) [6] 2.96% 2.12%
ProShares UltraShort Yen [Member]    
Investment Company, Financial Highlights [Line Items]    
Net asset value, beginning balance $ 68.88 $ 53.68
Net investment income (loss) 0.69 0.39
Net realized and unrealized gain (loss) [2] 12.38 1.91
Change in net asset value from operations 13.07 2.3
Net asset value, ending balance 81.95 55.98
Market value per share, beginning balance [3] 68.94 53.57
Market value per share, ending balance [3] $ 81.83 $ 56
Total Return, at net asset value 19.00% [4] 4.30% [5]
Total Return, at market value 18.70% [4] 4.50% [5]
Ratios to Average Net Assets    
Expense ratio [6],[10] 0.95% 0.95%
Net investment income gain (loss) [6] 3.58% 2.87%
ProShares VIX Mid-Term Futures ETF [Member]    
Investment Company, Financial Highlights [Line Items]    
Net asset value, beginning balance $ 16.74 $ 30.41
Net investment income (loss) 0.14 0.18
Net realized and unrealized gain (loss) [2] (1.03) (3.8)
Change in net asset value from operations (0.89) (3.62)
Net asset value, ending balance 15.85 26.79
Market value per share, beginning balance [3] 16.75 30.36
Market value per share, ending balance [3] $ 15.85 $ 26.82
Total Return, at net asset value (5.30%) [4] (11.90%) [5]
Total Return, at market value (5.40%) [4] (11.70%) [5]
Ratios to Average Net Assets    
Expense ratio [6],[10] 1.08% 0.97%
Net investment income gain (loss) [6] 3.44% 2.70%
ProShares VIX Short-Term Futures ETF [Member]    
Investment Company, Financial Highlights [Line Items]    
Net asset value, beginning balance $ 15.5 $ 57 [8]
Net investment income (loss) 0.12 0.29 [8]
Net realized and unrealized gain (loss) [2] (2.69) (12.13) [8]
Change in net asset value from operations (2.57) (11.84) [8]
Net asset value, ending balance 12.93 45.16 [8]
Market value per share, beginning balance [3] 15.51 56.9 [8]
Market value per share, ending balance [3] $ 12.96 $ 45.25 [8]
Total Return, at net asset value (16.60%) [4] (20.80%) [5],[8]
Total Return, at market value (16.40%) [4] (20.50%) [5],[8]
Ratios to Average Net Assets    
Expense ratio [6],[10] 1.04% 1.09% [8]
Net investment income gain (loss) [6] 3.41% 2.39% [8]
[1] See Note 8 of these Notes to Financial Statements.
[2] 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.
[3] Market values are determined at the close of the applicable primary listing exchange, which may be later than when the Funds’ net asset value is calculated.
[4] Percentages are not annualized for the period ended March 31, 2024.
[5] Percentages are not annualized for the period ended March 31, 2023.
[6] Percentages are annualized.
[7] The expense ratio would be 0.95%, 0.95%, 0.95%, 0.95%, 0.95% and 0.95%, respectively, if non-recurring fees and expenses, and brokerage commissions and futures account fees were excluded.
[8] See Note 1 of these Notes to Financial Statements.
[9] See Note 1 and Note 8 of these Notes to Financial Statements.
[10] The expense ratio would be 0.95%, 0.95%, 0.85% and 0.85%, respectively, if non-recurring fees and expenses, and brokerage commissions and futures account fees were excluded.