v3.10.0.1
Financial Highlights - Per Share Operating Performance (Parenthetical) (Detail)
Jun. 30, 2017
$ / shares
[1]
Proshares Ultra Pro 3x Crude Oil ETF [Member]  
Investment Company, Financial Highlights [Line Items]  
Returns for a share outstanding $ 25.00
ProShares UltraPro 3X Short Crude Oil ETF [Member]  
Investment Company, Financial Highlights [Line Items]  
Returns for a share outstanding $ 100.00 [2]
[1] From commencement of operations, March 24, 2017 through June 30, 2017.
[2] See Note 1 of these Notes to Financial Statements.