Creation and Redemption of Creation Units - Schedule of Transaction Fees (Detail) - USD ($)	3 Months Ended	6 Months Ended
	Jun. 30, 2026	Jun. 30, 2026
Summary of Investment Holdings [Line Items]
Transaction fees	$ 493,526	$ 917,561
ProShares Short VIX Short-Term Futures ETF [Member]
Summary of Investment Holdings [Line Items]
Transaction fees	18,162	39,173
ProShares Ultra Bloomberg Crude Oil [Member]
Summary of Investment Holdings [Line Items]
Transaction fees	0	0
ProShares Ultra Bloomberg Natural Gas [Member]
Summary of Investment Holdings [Line Items]
Transaction fees	0	0
ProShares Ultra Euro [Member]
Summary of Investment Holdings [Line Items]
Transaction fees	0	0
ProShares Ultra Gold [Member]
Summary of Investment Holdings [Line Items]
Transaction fees	0	0
ProShares Ultra Silver [Member]
Summary of Investment Holdings [Line Items]
Transaction fees	0	0
ProShares Ultra VIX Short-Term Futures ETF [Member]
Summary of Investment Holdings [Line Items]
Transaction fees	362,382	693,874
ProShares Ultra Yen [Member]
Summary of Investment Holdings [Line Items]
Transaction fees	0	0
ProShares UltraShort Bloomberg Crude Oil [Member]
Summary of Investment Holdings [Line Items]
Transaction fees	0	0
ProShares UltraShort Bloomberg Natural Gas [Member]
Summary of Investment Holdings [Line Items]
Transaction fees	0	0
ProShares UltraShort Euro [Member]
Summary of Investment Holdings [Line Items]
Transaction fees	0	0
ProShares UltraShort Gold [Member]
Summary of Investment Holdings [Line Items]
Transaction fees	0	0
ProShares UltraShort Silver [Member]
Summary of Investment Holdings [Line Items]
Transaction fees	0	0
ProShares UltraShort Yen [Member]
Summary of Investment Holdings [Line Items]
Transaction fees	0	0
ProShares VIX Mid-Term Futures ETF [Member]
Summary of Investment Holdings [Line Items]
Transaction fees	7,244	16,909
ProShares VIX Short-Term Futures ETF [Member]
Summary of Investment Holdings [Line Items]
Transaction fees	$ 105,738	$ 167,605