v3.24.1.u1
Significant Accounting Policies - Cut-off Times and Times of Calculation of Funds' Final Net Asset Value for Creation and Redemption of Fund Shares (Detail)
 3 Months Ended
Mar. 31, 2024
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 March 28, 2024
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 March 28, 2024
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 March 28, 2024
ProShares UltraShort Yen [Member]  
Net Asset Value [Line Items]  
Create/Redeem Cut-off 3:00 p.m. [1]
NAV Calculation Time 4:00 p.m.
NAV Calculation Date March 28, 2024
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 March 28, 2024
[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 three months ended March 31, 2024.