v3.24.3
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, 2024
Proshares Ultra Silver and 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 28, 2024
Proshares Ultra Gold and 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 28, 2024
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 June 28, 2024
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 June 28, 2024
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 June 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 June 28, 2024
ProShares Ultra Euro [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 28, 2024
ProShares Ultra 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 28, 2024
ProShares UltraShort Euro [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 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 June 28, 2024
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 June 28, 2024
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 June 28, 2024
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 June 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 June 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 six months ended June 30, 2024.