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Financial Highlights - Per Share Operating Performance (Detail) - $ / shares
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Investment Company, Financial Highlights [Line Items]      
Net asset value, beginning balance [1] $ 423.96    
Net investment income (loss) [1] 2.62    
Net realized and unrealized gain (loss) [1],[2] (373.35)    
Change in net asset value from operations [1] (370.73)    
Net asset value, ending balance [1] 53.23 $ 423.96  
Market value per share, beginning balance [1],[3] 420    
Market value per share, ending balance [1],[3] $ 53.4 420  
Total Return, at net asset value [1] (87.50%)    
Total Return, at market value [1] (87.30%)    
Ratios to Average Net Assets      
Expense ratio [1],[4] 1.01%    
Net investment income gain (loss) [1] 1.79%    
ProShares Short VIX Short-Term Futures ETF [Member]      
Investment Company, Financial Highlights [Line Items]      
Net asset value, beginning balance [5] $ 50.03 51.69 $ 29.35
Net investment income (loss) 1.05 1.72 [5] 1.05 [5]
Net realized and unrealized gain (loss) [2] 4.4 (3.38) [5] 21.29 [5]
Change in net asset value from operations 5.45 (1.66) [5] 22.34 [5]
Net asset value, ending balance 55.48 50.03 [5] 51.69 [5]
Market value per share, beginning balance [3],[5] 50.06 51.7 29.34
Market value per share, ending balance [3] $ 55.38 $ 50.06 [5] $ 51.7 [5]
Total Return, at net asset value 10.90% (3.20%) [5] 76.10% [5]
Total Return, at market value 10.60% (3.20%) [5] 76.20% [5]
Ratios to Average Net Assets      
Expense ratio [6] 1.18% 1.21% [5] 1.16% [5]
Net investment income gain (loss) 2.35% 3.22% [5] 2.74% [5]
ProShares Ultra Bloomberg Crude Oil [Member]      
Investment Company, Financial Highlights [Line Items]      
Net asset value, beginning balance $ 27.49 $ 26.28 $ 30.26
Net investment income (loss) 0.46 0.93 0.6
Net realized and unrealized gain (loss) [2] (8.65) 0.28 (4.58)
Change in net asset value from operations (8.19) 1.21 (3.98)
Net asset value, ending balance 19.3 27.49 26.28
Market value per share, beginning balance [3] 27.5 26.1 30.31
Market value per share, ending balance [3] $ 19.32 $ 27.5 $ 26.1
Total Return, at net asset value (29.80%) 4.60% (13.20%)
Total Return, at market value (29.80%) 5.40% (13.90%)
Ratios to Average Net Assets      
Expense ratio [6] 1.00% 0.99% 0.99%
Net investment income gain (loss) 2.00% 3.21% 2.16%
ProShares Ultra Bloomberg Natural Gas [Member]      
Investment Company, Financial Highlights [Line Items]      
Net asset value, beginning balance [5] $ 54.84 $ 142.73 $ 1,815.41
Net investment income (loss) 0.83 1.81 [5] 7.13 [5]
Net realized and unrealized gain (loss) [2] (33.12) (89.7) [5] (1,679.81) [5]
Change in net asset value from operations (32.29) (87.89) [5] (1,672.68) [5]
Net asset value, ending balance 22.55 54.84 [5] 142.73 [5]
Market value per share, beginning balance [3],[5] 55.82 142.2 1,778
Market value per share, ending balance [3] $ 22.9 $ 55.82 [5] $ 142.2 [5]
Total Return, at net asset value (58.90%) (61.60%) [5] (92.10%) [5]
Total Return, at market value (59.00%) (60.80%) [5] (92.00%) [5]
Ratios to Average Net Assets      
Expense ratio [6] 1.39% 1.47% [5] 1.38% [5]
Net investment income gain (loss) 2.19% 2.92% [5] 2.24% [5]
ProShares Ultra Euro [Member]      
Investment Company, Financial Highlights [Line Items]      
Net asset value, beginning balance $ 10.46 $ 11.86 $ 11.27
Net investment income (loss) 0.32 0.41 0.38
Net realized and unrealized gain (loss) [2] 2.39 (1.81) 0.21
Change in net asset value from operations 2.71 (1.4) 0.59
Net asset value, ending balance 13.17 10.46 11.86
Market value per share, beginning balance [3] 10.45 11.84 11.26
Market value per share, ending balance [3] $ 13.16 $ 10.45 $ 11.84
Total Return, at net asset value 25.90% (11.80%) 5.20%
Total Return, at market value 25.90% (11.70%) 5.20%
Ratios to Average Net Assets      
Expense ratio [6] 0.95% 0.95% 0.95%
Net investment income gain (loss) 2.61% 3.59% 3.29%
ProShares Ultra Gold [Member]      
Investment Company, Financial Highlights [Line Items]      
Net asset value, beginning balance [5] $ 23.36 $ 15.96 $ 13.77
Net investment income (loss) [5] 1.13 0.77 0.45
Net realized and unrealized gain (loss) [2],[5] 31.42 6.63 1.74
Change in net asset value from operations [5] 32.55 7.4 2.19
Net asset value, ending balance [5] 55.91 23.36 15.96
Market value per share, beginning balance [3],[5] 23.37 15.97 13.82
Market value per share, ending balance [3],[5] $ 55.52 $ 23.37 $ 15.97
Total Return, at net asset value [5] 139.30% 46.40% 15.90%
Total Return, at market value [5] 137.60% 46.40% 15.60%
Ratios to Average Net Assets      
Expense ratio [5],[6] 0.97% 0.97% 0.96%
Net investment income gain (loss) [5] 2.89% 3.76% 3.02%
ProShares Ultra Silver [Member]      
Investment Company, Financial Highlights [Line Items]      
Net asset value, beginning balance $ 33.56 $ 27.29 $ 31.75
Net investment income (loss) 1.54 1.29 0.75
Net realized and unrealized gain (loss) [2] 120.85 4.98 (5.21)
Change in net asset value from operations 122.39 6.27 (4.46)
Net asset value, ending balance 155.95 33.56 27.29
Market value per share, beginning balance [3] 33.67 27.17 32
Market value per share, ending balance [3] $ 155.12 $ 33.67 $ 27.17
Total Return, at net asset value 364.70% 23.00% (14.10%)
Total Return, at market value 360.70% 23.90% (15.10%)
Ratios to Average Net Assets      
Expense ratio [6] 0.98% 0.98% 0.98%
Net investment income gain (loss) 2.59% 3.62% 2.64%
ProShares Ultra VIX Short-Term Futures ETF [Member]      
Investment Company, Financial Highlights [Line Items]      
Net asset value, beginning balance [5] $ 103.86 $ 210.87 $ 1,717.15
Net investment income (loss) [5] 0.89 2.76 10.56
Net realized and unrealized gain (loss) [2],[5] (68.89) (109.77) (1,516.84)
Change in net asset value from operations [5] (68) (107.01) (1,506.28)
Net asset value, ending balance [5] 35.86 103.86 210.87
Market value per share, beginning balance [3],[5] 103.6 211 1,715
Market value per share, ending balance [3],[5] $ 35.93 $ 103.6 $ 211
Total Return, at net asset value [5] (65.50%) (50.70%) (87.70%)
Total Return, at market value [5] (65.30%) (50.90%) (87.70%)
Ratios to Average Net Assets      
Expense ratio [5] 1.75% [6] 1.86% [7] 1.61% [7]
Net investment income gain (loss) [5] 1.25% 2.04% 1.84%
ProShares Ultra Yen [Member]      
Investment Company, Financial Highlights [Line Items]      
Net asset value, beginning balance $ 20.23 $ 27.46 $ 34.54
Net investment income (loss) 0.57 0.77 0.96
Net realized and unrealized gain (loss) [2] (1.72) (8) (8.04)
Change in net asset value from operations (1.15) (7.23) (7.08)
Net asset value, ending balance 19.08 20.23 27.46
Market value per share, beginning balance [3] 20.35 27.49 34.56
Market value per share, ending balance [3] $ 19.06 $ 20.35 $ 27.49
Total Return, at net asset value (5.70%) (26.30%) (20.50%)
Total Return, at market value (6.30%) (26.00%) (20.50%)
Ratios to Average Net Assets      
Expense ratio 0.95% [6] 0.95% [7] 0.95% [7]
Net investment income gain (loss) 2.62% 3.40% 3.40%
ProShares UltraShort Bloomberg Crude Oil [Member]      
Investment Company, Financial Highlights [Line Items]      
Net asset value, beginning balance $ 16.93 $ 20.75 $ 23.93
Net investment income (loss) 0.47 0.64 0.7
Net realized and unrealized gain (loss) [2] 2.24 (4.46) (3.88)
Change in net asset value from operations 2.71 (3.82) (3.18)
Net asset value, ending balance 19.64 16.93 20.75
Market value per share, beginning balance [3] 16.92 20.89 23.85
Market value per share, ending balance [3] $ 19.61 $ 16.92 $ 20.89
Total Return, at net asset value 16.00% (18.40%) (13.30%)
Total Return, at market value 15.90% (19.00%) (12.40%)
Ratios to Average Net Assets      
Expense ratio 1.10% [6] 1.06% [7] 1.07% [7]
Net investment income gain (loss) 2.65% 3.67% 3.28%
ProShares UltraShort Bloomberg Natural Gas [Member]      
Investment Company, Financial Highlights [Line Items]      
Net asset value, beginning balance [5] $ 43.61 $ 48.05 $ 13.5
Net investment income (loss) 0.61 1.64 [5] 0.77 [5]
Net realized and unrealized gain (loss) [2] (8.43) (6.08) [5] 33.78 [5]
Change in net asset value from operations (7.82) (4.44) [5] 34.55 [5]
Net asset value, ending balance 35.79 43.61 [5] 48.05 [5]
Market value per share, beginning balance [3],[5] 42.74 48.21 13.78
Market value per share, ending balance [3] $ 35.27 $ 42.74 [5] $ 48.21 [5]
Total Return, at net asset value (17.90%) (9.20%) [5] 255.90% [5]
Total Return, at market value (17.50%) (11.30%) [5] 249.80% [5]
Ratios to Average Net Assets      
Expense ratio 1.43% [6] 1.82% [5],[7] 1.66% [5],[7]
Net investment income gain (loss) 2.36% 2.82% [5] 2.63% [5]
ProShares UltraShort Euro [Member]      
Investment Company, Financial Highlights [Line Items]      
Net asset value, beginning balance $ 34.91 $ 29.16 $ 29.46
Net investment income (loss) 0.78 1.06 0.97
Net realized and unrealized gain (loss) [2] (7.29) 4.69 (1.27)
Change in net asset value from operations (6.51) 5.75 (0.3)
Net asset value, ending balance 28.4 34.91 29.16
Market value per share, beginning balance [3] 34.92 29.15 29.45
Market value per share, ending balance [3] $ 28.33 $ 34.92 $ 29.15
Total Return, at net asset value (18.70%) 19.70% (1.00%)
Total Return, at market value (18.90%) 19.80% (1.00%)
Ratios to Average Net Assets      
Expense ratio 0.95% [6] 0.95% [8] 0.95% [8]
Net investment income gain (loss) 2.60% 3.40% 3.28%
ProShares UltraShort Gold [Member]      
Investment Company, Financial Highlights [Line Items]      
Net asset value, beginning balance [5] $ 70.22 $ 105.56 $ 124.4
Net investment income (loss) [5] 0.89 2.5 3.34
Net realized and unrealized gain (loss) [2],[5] (45.13) (37.84) (22.18)
Change in net asset value from operations [5] (44.24) (35.34) (18.84)
Net asset value, ending balance [5] 25.98 70.22 105.56
Market value per share, beginning balance [3],[5] 70.32 105.48 123.96
Market value per share, ending balance [3],[5] $ 26.15 $ 70.32 $ 105.48
Total Return, at net asset value [5] (63.00%) (33.50%) (15.20%)
Total Return, at market value [5] (62.80%) (33.30%) (14.90%)
Ratios to Average Net Assets      
Expense ratio [5] 0.98% [6] 0.98% [8] 0.98% [8]
Net investment income gain (loss) [5] 2.35% 3.10% 2.95%
ProShares UltraShort Silver [Member]      
Investment Company, Financial Highlights [Line Items]      
Net asset value, beginning balance [9] $ 423.96 $ 725.63 $ 778.22
Net investment income (loss) [9]   13.94 20.15
Net realized and unrealized gain (loss) [2],[9]   (315.61) (72.74)
Change in net asset value from operations [9]   (301.67) (52.59)
Net asset value, ending balance [9]   423.96 725.63
Market value per share, beginning balance [3],[9] 420 729.6 772
Market value per share, ending balance [3],[9]   $ 420 $ 729.6
Total Return, at net asset value [9]   (41.60%) (6.80%)
Total Return, at market value [9]   (42.40%) (5.50%)
Ratios to Average Net Assets      
Expense ratio [8],[9]   1.03% 1.08%
Net investment income gain (loss) [9]   2.90% 2.61%
ProShares UltraShort Yen [Member]      
Investment Company, Financial Highlights [Line Items]      
Net asset value, beginning balance [5] 47.66 $ 34.44 $ 26.84
Net investment income (loss) 1.17 1.44 [5] 1.08 [5]
Net realized and unrealized gain (loss) [2] 2.11 11.78 [5] 6.52 [5]
Change in net asset value from operations 3.28 13.22 [5] 7.6 [5]
Net asset value, ending balance 50.94 47.66 [5] 34.44 [5]
Market value per share, beginning balance [3],[5] 46.68 34.47 26.79
Market value per share, ending balance [3] $ 50.9 $ 46.68 [5] $ 34.47 [5]
Total Return, at net asset value 6.90% 38.40% [5] 28.30% [5]
Total Return, at market value 9.00% 35.40% [5] 28.70% [5]
Ratios to Average Net Assets      
Expense ratio 0.95% [4] 0.95% [5],[8] 0.95% [5],[8]
Net investment income gain (loss) 2.60% 3.42% [5] 3.33% [5]
ProShares VIX Mid-Term Futures ETF [Member]      
Investment Company, Financial Highlights [Line Items]      
Net asset value, beginning balance $ 14.51 $ 16.74 $ 30.41
Net investment income (loss) 0.41 0.53 0.71
Net realized and unrealized gain (loss) [2] 0.32 (2.76) (14.38)
Change in net asset value from operations 0.73 (2.23) (13.67)
Net asset value, ending balance 15.24 14.51 16.74
Market value per share, beginning balance [3] 14.46 16.75 30.36
Market value per share, ending balance [3] $ 15.27 $ 14.46 $ 16.75
Total Return, at net asset value 5.00% (13.30%) (45.00%)
Total Return, at market value 5.60% (13.70%) (44.80%)
Ratios to Average Net Assets      
Expense ratio 1.00% [4] 1.10% [8] 0.99% [8]
Net investment income gain (loss) 2.57% 3.56% 3.12%
ProShares VIX Short-Term Futures ETF [Member]      
Investment Company, Financial Highlights [Line Items]      
Net asset value, beginning balance [5] $ 45.05 $ 61.99 $ 228.01
Net investment income (loss) 0.87 1.61 [5] 3.42 [5]
Net realized and unrealized gain (loss) [2] (20.19) (18.55) [5] (169.44) [5]
Change in net asset value from operations (19.32) (16.94) [5] (166.02) [5]
Net asset value, ending balance 25.73 45.05 [5] 61.99 [5]
Market value per share, beginning balance [3],[5] 45.02 62.04 227.6
Market value per share, ending balance [3] $ 25.64 $ 45.02 [5] $ 62.04 [5]
Total Return, at net asset value (42.90%) (27.30%) [5] (72.80%) [5]
Total Return, at market value (43.10%) (27.40%) [5] (72.70%) [5]
Ratios to Average Net Assets      
Expense ratio 1.19% [4] 1.09% [5],[8] 1.07% [5],[8]
Net investment income gain (loss) 2.26% 3.22% [5] 2.93% [5]
[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] The expense ratio would be 0.95%, 0.95%, 0.85% and 0.85%, respectively, if brokerage commissions and futures account fees were excluded.
[5] See Note 1 of these Notes to Financial Statements.
[6] The expense ratio would be 0.95%, 0.95%, 0.95%, 0.95%, 0.95% and 0.95%, respectively, if brokerage commissions and futures account fees were excluded.
[7] The expense ratio would be 0.95%, 0.95%, 0.95% and 0.95%, respectively, if brokerage commissions and futures account fees were excluded.
[8] The expense ratio would be 0.95%, 0.95%, 0.95%, 0.95%, 0.85% and 0.85%, respectively, if brokerage commissions and futures account fees were excluded.
[9] See Note 1 and Note 8 of these Notes to Financial Statements.