v3.22.2
Significant Accounting Policies - Cut-off Times and Times of Calculation of Funds' Final Net Asset Value for Creation and Redemption of Fund Shares (Detail)
 6 Months Ended
Jun. 30, 2022
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 June 30, 2022
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 June 30, 2022
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 June 30, 2022
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 June 30, 2022
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 June 30, 2022
[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 six months ended June 30, 2022.