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Significant Accounting Policies - Cut-off Times and Times of Calculation of Funds' Final Net Asset Value for Creation and Redemption of Fund Shares (Detail) | 12 Months Ended
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Dec. 31, 2025
ProShares UltraShort Silver [Member] |  |
Net Asset Value [Line Items] |  |
Create/Redeem Cut-off | 1:00 p.m. | [1]
NAV Calculation Time | 1:25 p.m. |
NAV Calculation Date | December 31, 2025 |
ProShares UltraShort Gold [Member] |  |
Net Asset Value [Line Items] |  |
Create/Redeem Cut-off | 1:00 p.m. | [1]
NAV Calculation Time | 1:30 p.m. |
NAV Calculation Date | December 31, 2025 |
Proshares Ultra Bloomberg Crude Oil [Member] |  |
Net Asset Value [Line Items] |  |
Create/Redeem Cut-off | 2:00 p.m. | [1]
NAV Calculation Time | 2:30 p.m. |
NAV Calculation Date | December 31, 2025 |
Proshares Ultra Bloomberg Natural Gas [Member] |  |
Net Asset Value [Line Items] |  |
Create/Redeem Cut-off | 2:00 p.m. | [1]
NAV Calculation Time | 2:30 p.m. |
NAV Calculation Date | December 31, 2025 |
Proshares UltraShort Bloomberg Crude Oil [Member] |  |
Net Asset Value [Line Items] |  |
Create/Redeem Cut-off | 2:00 p.m. | [1]
NAV Calculation Time | 2:30 p.m. |
NAV Calculation Date | December 31, 2025 |
ProShares UltraShort Bloomberg Natural Gas [Member] |  |
Net Asset Value [Line Items] |  |
Create/Redeem Cut-off | 2:00 p.m. | [1]
NAV Calculation Time | 2:30 p.m. |
NAV Calculation Date | December 31, 2025 |
Ultra Euro, Ultra Yen, UltraShort Euro and UltraShort Yen |  |
Net Asset Value [Line Items] |  |
Create/Redeem Cut-off | 3:00 p.m. | [1]
NAV Calculation Time | 4:00 p.m. |
NAV Calculation Date | December 31, 2025 |
Proshares Short VIX Short-Term Futures ETF [Member] |  |
Net Asset Value [Line Items] |  |
Create/Redeem Cut-off | 2:00 p.m. | [1]
NAV Calculation Time | 4:00 p.m. |
NAV Calculation Date | December 31, 2025 |
Proshares Ultra VIX Short Term Futures ETF [Member] |  |
Net Asset Value [Line Items] |  |
Create/Redeem Cut-off | 2:00 p.m. | [1]
NAV Calculation Time | 4:00 p.m. |
NAV Calculation Date | December 31, 2025 |
Proshares VIX Mid-Term Futures ETF [Member] |  |
Net Asset Value [Line Items] |  |
Create/Redeem Cut-off | 2:00 p.m. | [1]
NAV Calculation Time | 4:00 p.m. |
NAV Calculation Date | December 31, 2025 |
ProShares VIX Short-Term Futures ETF [Member] |  |
Net Asset Value [Line Items] |  |
Create/Redeem Cut-off | 2:00 p.m. | [1]
NAV Calculation Time | 4:00 p.m. |
NAV Calculation Date | December 31, 2025 |
[1] | Although the Funds’ shares may continue to trade on secondary markets subsequent to the calculation of the final NAV, these times represent the final opportunity to transact in creation or redemption units for the year ended December 31, 2025.

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