v3.24.1.u1

Investments - Fair Value of Derivative Instruments (Detail) - USD ($)		Mar. 31, 2024	Dec. 31, 2023
Not Designated as Hedging Instrument [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivatives asset not accounted for as hedging instruments, Unrealized Appreciation	[1]	$ 141,808,792	$ 122,342,647
Derivatives liability not accounted for as hedging instruments, Unrealized Depreciation	[1]	133,865,310	61,421,374
VIX Futures Contracts [Member] | ProShares VIX Mid-Term Futures ETF [Member] | Not Designated as Hedging Instrument [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivatives asset not accounted for as hedging instruments, Unrealized Appreciation	[1]	17,267
VIX Futures Contracts [Member] | Receivable on open futures contracts, unrealized appreciation on swap agreements [Member] | ProShares Short VIX Short-Term Futures ETF [Member] | Not Designated as Hedging Instrument [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivatives asset not accounted for as hedging instruments, Unrealized Appreciation	[1]	8,013,037	12,640,624
VIX Futures Contracts [Member] | Payable on open futures contracts, unrealized depreciation on swap agreements [Member] | ProShares Ultra VIX Short-Term Futures ETF [Member] | Not Designated as Hedging Instrument [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivatives liability not accounted for as hedging instruments, Unrealized Depreciation	[1]	17,898,783	31,183,911
VIX Futures Contracts [Member] | Payable on open futures contracts, unrealized depreciation on swap agreements [Member] | ProShares VIX Mid-Term Futures ETF [Member] | Not Designated as Hedging Instrument [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivatives liability not accounted for as hedging instruments, Unrealized Depreciation	[1]	973,152	3,745,676
VIX Futures Contracts [Member] | Payable on open futures contracts, unrealized depreciation on swap agreements [Member] | ProShares VIX Short-Term Futures ETF [Member] | Not Designated as Hedging Instrument [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivatives liability not accounted for as hedging instruments, Unrealized Depreciation	[1]	6,679,575	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] | Not Designated as Hedging Instrument [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivatives asset not accounted for as hedging instruments, Unrealized Appreciation	[1]	69,578,110	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] | Not Designated as Hedging Instrument [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] | Not Designated as Hedging Instrument [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivatives asset not accounted for as hedging instruments, Unrealized Appreciation	[1]	9,912,182	7,174,868
Commodities Contracts [Member] | Receivables on open futures contracts and/or unrealized appreciation on swap agreements [Member] | ProShares Ultra Silver [Member] | Not Designated as Hedging Instrument [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivatives asset not accounted for as hedging instruments, Unrealized Appreciation	[1]	31,214,049	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] | Not Designated as Hedging Instrument [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] | Not Designated as Hedging Instrument [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivatives asset not accounted for as hedging instruments, Unrealized Appreciation	[1]	20,277,127
Commodities Contracts [Member] | Receivables on open futures contracts and/or unrealized appreciation on swap agreements [Member] | ProShares UltraShort Silver [Member] | Not Designated as Hedging Instrument [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivatives asset not accounted for as hedging instruments, Unrealized Appreciation	[1]		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] | Not Designated as Hedging Instrument [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] | Not Designated as Hedging Instrument [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivatives liability not accounted for as hedging instruments, Unrealized Depreciation	[1]	92,772,278
Commodities Contracts [Member] | Payable on open futures contracts and/or unrealized depreciation on swap agreements [Member] | ProShares Ultra Silver [Member] | Not Designated as Hedging Instrument [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivatives liability not accounted for as hedging instruments, Unrealized Depreciation	[1]		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]	11,995,111
Commodities Contracts [Member] | Payable on open futures contracts and/or unrealized depreciation on swap agreements [Member] | ProShares UltraShort Bloomberg Natural Gas [Member] | Not Designated as Hedging Instrument [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] | Not Designated as Hedging Instrument [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivatives liability not accounted for as hedging instruments, Unrealized Depreciation	[1]	688,631	344,052
Commodities Contracts [Member] | Payable on open futures contracts and/or unrealized depreciation on swap agreements [Member] | ProShares UltraShort Silver [Member] | Not Designated as Hedging Instrument [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivatives liability not accounted for as hedging instruments, Unrealized Depreciation	[1]	543,730	1,005,085
Foreign Exchange Contracts [Member] | Unrealized appreciation on foreign currency forward contracts, and/or receivables on open futures contracts [Member] | ProShares Ultra Euro [Member] | Not Designated as Hedging Instrument [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivatives asset not accounted for as hedging instruments, Unrealized Appreciation		965	308,424
Foreign Exchange Contracts [Member] | Unrealized appreciation on foreign currency forward contracts, and/or receivables on open futures contracts [Member] | ProShares Ultra Yen [Member] | Not Designated as Hedging Instrument [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivatives asset not accounted for as hedging instruments, Unrealized Appreciation		5,548	1,534,924
Foreign Exchange Contracts [Member] | Unrealized appreciation on foreign currency forward contracts, and/or receivables on open futures contracts [Member] | ProShares UltraShort Euro [Member] | Not Designated as Hedging Instrument [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivatives asset not accounted for as hedging instruments, Unrealized Appreciation		1,164,063	38,029
Foreign Exchange Contracts [Member] | Unrealized appreciation on foreign currency forward contracts, and/or receivables on open futures contracts [Member] | ProShares UltraShort Yen [Member] | Not Designated as Hedging Instrument [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivatives asset not accounted for as hedging instruments, Unrealized Appreciation		1,626,444	129,697
Foreign Exchange Contracts [Member] | Unrealized depreciation on foreign currency forward contracts, and/or payable on open futures contracts [Member] | ProShares Ultra Euro [Member] | Not Designated as Hedging Instrument [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivatives liability not accounted for as hedging instruments, Unrealized Depreciation		203,530	1,475
Foreign Exchange Contracts [Member] | Unrealized depreciation on foreign currency forward contracts, and/or payable on open futures contracts [Member] | ProShares Ultra Yen [Member] | Not Designated as Hedging Instrument [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivatives liability not accounted for as hedging instruments, Unrealized Depreciation		2,065,194	15,639
Foreign Exchange Contracts [Member] | Unrealized depreciation on foreign currency forward contracts, and/or payable on open futures contracts [Member] | ProShares UltraShort Euro [Member] | Not Designated as Hedging Instrument [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivatives liability not accounted for as hedging instruments, Unrealized Depreciation		45,109	1,886,808
Foreign Exchange Contracts [Member] | Unrealized depreciation on foreign currency forward contracts, and/or payable on open futures contracts [Member] | ProShares UltraShort Yen [Member] | Not Designated as Hedging Instrument [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivatives liability not accounted for as hedging instruments, Unrealized Depreciation		$ 217	$ 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.

X

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ 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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- Definition

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+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 946
-SubTopic 320
-Name Accounting Standards Codification
-Section S99
-Paragraph 22
-Publisher FASB
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- Definition

This element represents the excess of the cost (face amount, notional amount) of an investment (security, contract) over its fair value which deficiency has not been recognized in earnings of the entity.

+ References

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