v3.24.3

Investments - Fair Value of Derivative Instruments (Detail) - Not Designated as Hedging Instrument [Member] - USD ($)		Jun. 30, 2024	Dec. 31, 2023
Derivative Instruments, Gain (Loss) [Line Items]
Derivatives asset not accounted for as hedging instruments, Unrealized Appreciation	[1]	$ 123,184,648	$ 122,342,647
Derivatives liability not accounted for as hedging instruments, Unrealized Depreciation	[1]	242,443,922	61,421,374
VIX Futures Contracts [Member] | ProShares VIX Mid-Term Futures ETF [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivatives asset not accounted for as hedging instruments, Unrealized Appreciation	[1]	422,352
VIX Futures Contracts [Member] | Receivable on open futures contracts [Member] | ProShares Short VIX Short-Term Futures ETF [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivatives asset not accounted for as hedging instruments, Unrealized Appreciation	[1]	3,835,199	12,640,624
VIX Futures Contracts [Member] | Payable on open futures contracts [Member] | ProShares Ultra VIX Short-Term Futures ETF [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivatives liability not accounted for as hedging instruments, Unrealized Depreciation	[1]	6,204,920	31,183,911
VIX Futures Contracts [Member] | Payable on open futures contracts [Member] | ProShares VIX Mid-Term Futures ETF [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivatives liability not accounted for as hedging instruments, Unrealized Depreciation	[1]	285,377	3,745,676
VIX Futures Contracts [Member] | Payable on open futures contracts [Member] | ProShares VIX Short-Term Futures ETF [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivatives liability not accounted for as hedging instruments, Unrealized Depreciation	[1]	2,660,820	9,664,094
Commodities Contracts [Member] | Receivables on open futures contracts and/or unrealized appreciation on swap agreements [Member] | ProShares Ultra Bloomberg Crude Oil [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivatives asset not accounted for as hedging instruments, Unrealized Appreciation	[1]	68,830,037	20,191,987
Commodities Contracts [Member] | Receivables on open futures contracts and/or unrealized appreciation on swap agreements [Member] | ProShares Ultra Bloomberg Natural Gas [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivatives asset not accounted for as hedging instruments, Unrealized Appreciation	[1]		43,607,070
Commodities Contracts [Member] | Receivables on open futures contracts and/or unrealized appreciation on swap agreements [Member] | ProShares Ultra Gold [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivatives asset not accounted for as hedging instruments, Unrealized Appreciation	[1]		7,174,868
Commodities Contracts [Member] | Receivables on open futures contracts and/or unrealized appreciation on swap agreements [Member] | ProShares Ultra Silver [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivatives asset not accounted for as hedging instruments, Unrealized Appreciation	[1]		12,400,748
Commodities Contracts [Member] | Receivables on open futures contracts and/or unrealized appreciation on swap agreements [Member] | ProShares UltraShort Bloomberg Crude Oil [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivatives asset not accounted for as hedging instruments, Unrealized Appreciation	[1]		22,436,319
Commodities Contracts [Member] | Receivables on open futures contracts and/or unrealized appreciation on swap agreements [Member] | ProShares UltraShort Bloomberg Natural Gas [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivatives asset not accounted for as hedging instruments, Unrealized Appreciation	[1]	40,824,143
Commodities Contracts [Member] | Receivables on open futures contracts and/or unrealized appreciation on swap agreements [Member] | ProShares UltraShort Gold [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivatives asset not accounted for as hedging instruments, Unrealized Appreciation	[1]	575,805
Commodities Contracts [Member] | Receivables on open futures contracts and/or unrealized appreciation on swap agreements [Member] | ProShares UltraShort Silver [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivatives asset not accounted for as hedging instruments, Unrealized Appreciation	[1]	4,359,094	1,879,957
Commodities Contracts [Member] | Payable on open futures contracts and/or unrealized depreciation on swap agreements [Member] | ProShares Ultra Bloomberg Crude Oil [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivatives liability not accounted for as hedging instruments, Unrealized Depreciation	[1]		5,752,284
Commodities Contracts [Member] | Payable on open futures contracts and/or unrealized depreciation on swap agreements [Member] | ProShares Ultra Bloomberg Natural Gas [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivatives liability not accounted for as hedging instruments, Unrealized Depreciation	[1]	153,035,669
Commodities Contracts [Member] | Payable on open futures contracts and/or unrealized depreciation on swap agreements [Member] | ProShares Ultra Gold [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivatives liability not accounted for as hedging instruments, Unrealized Depreciation	[1]	7,320,349
Commodities Contracts [Member] | Payable on open futures contracts and/or unrealized depreciation on swap agreements [Member] | ProShares Ultra Silver [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivatives liability not accounted for as hedging instruments, Unrealized Depreciation	[1]	56,076,627	2,827,221
Commodities Contracts [Member] | Payable on open futures contracts and/or unrealized depreciation on swap agreements [Member] | ProShares UltraShort Bloomberg Crude Oil [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivatives liability not accounted for as hedging instruments, Unrealized Depreciation	[1]	13,555,729
Commodities Contracts [Member] | Payable on open futures contracts and/or unrealized depreciation on swap agreements [Member] | ProShares UltraShort Bloomberg Natural Gas [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivatives liability not accounted for as hedging instruments, Unrealized Depreciation	[1]		3,553,507
Commodities Contracts [Member] | Payable on open futures contracts and/or unrealized depreciation on swap agreements [Member] | ProShares UltraShort Gold [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivatives liability not accounted for as hedging instruments, Unrealized Depreciation	[1]		344,052
Commodities Contracts [Member] | Payable on open futures contracts and/or unrealized depreciation on swap agreements [Member] | ProShares UltraShort Silver [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivatives liability not accounted for as hedging instruments, Unrealized Depreciation	[1]		1,005,085
Foreign Exchange Contracts [Member] | Unrealized appreciation on foreign currency forward contracts [Member] | ProShares Ultra Euro [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivatives asset not accounted for as hedging instruments, Unrealized Appreciation			308,424
Foreign Exchange Contracts [Member] | Unrealized appreciation on foreign currency forward contracts [Member] | ProShares Ultra Yen [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivatives asset not accounted for as hedging instruments, Unrealized Appreciation		29,111	1,534,924
Foreign Exchange Contracts [Member] | Unrealized appreciation on foreign currency forward contracts [Member] | ProShares UltraShort Euro [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivatives asset not accounted for as hedging instruments, Unrealized Appreciation		937,816	38,029
Foreign Exchange Contracts [Member] | Unrealized appreciation on foreign currency forward contracts [Member] | ProShares UltraShort Yen [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivatives asset not accounted for as hedging instruments, Unrealized Appreciation		3,371,091	129,697
Foreign Exchange Contracts [Member] | Unrealized depreciation on foreign currency forward contracts [Member] | ProShares Ultra Euro [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivatives liability not accounted for as hedging instruments, Unrealized Depreciation		140,398	1,475
Foreign Exchange Contracts [Member] | Unrealized depreciation on foreign currency forward contracts [Member] | ProShares Ultra Yen [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivatives liability not accounted for as hedging instruments, Unrealized Depreciation		2,931,169	15,639
Foreign Exchange Contracts [Member] | Unrealized depreciation on foreign currency forward contracts [Member] | ProShares UltraShort Euro [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivatives liability not accounted for as hedging instruments, Unrealized Depreciation		17,867	1,886,808
Foreign Exchange Contracts [Member] | Unrealized depreciation on foreign currency forward contracts [Member] | ProShares UltraShort Yen [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivatives liability not accounted for as hedging instruments, Unrealized Depreciation		$ 214,997	$ 1,441,622
[1] Includes cumulative appreciation (depreciation) of futures contracts as reported in the Schedule of Investments. Only current day’s variation margin is reported within the Statements of Financial Condition in receivable/payable on open futures.

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+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 815
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 4E
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480434/815-10-50-4E

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