v3.24.0.1

Significant Accounting Policies - Valuation of Investments using Fair Value Hierarchy (Detail) - USD ($)		Dec. 31, 2023	Dec. 31, 2022
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Investments, fair value disclosure		$ 751,395,550	$ 1,383,546,929
ProShares Short VIX Short-Term Futures ETF [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Investments, fair value disclosure		122,050,966	155,400,057
ProShares Ultra Bloomberg Crude Oil [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Investments, fair value disclosure		247,916,644	413,916,300
ProShares Ultra Bloomberg Natural Gas [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Investments, fair value disclosure		108,066,187	(47,353,811)
ProShares Ultra Euro [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Investments, fair value disclosure		306,949	415,656
ProShares Ultra Gold [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Investments, fair value disclosure		66,682,462	138,862,043
ProShares Ultra Silver [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Investments, fair value disclosure		123,849,552	297,308,420
ProShares Ultra VIX Short-Term Futures ETF [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Investments, fair value disclosure		(31,183,911)	(1,823,081)
ProShares Ultra Yen [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Investments, fair value disclosure		1,519,285	984,549
ProShares UltraShort Bloomberg Crude Oil [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Investments, fair value disclosure		72,120,204	99,671,828
ProShares UltraShort Bloomberg Natural Gas [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Investments, fair value disclosure		(3,553,507)	147,371,924
ProShares UltraShort Euro [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Investments, fair value disclosure		(1,848,779)	37,535,368
ProShares UltraShort Gold [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Investments, fair value disclosure		(344,052)	(691,843)
ProShares UltraShort Silver [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Investments, fair value disclosure		874,872	(2,663,123)
ProShares UltraShort Yen [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Investments, fair value disclosure		(1,311,925)	19,970,626
ProShares VIX Mid-Term Futures ETF [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Investments, fair value disclosure		(3,745,676)	45,091,125
ProShares VIX Short-Term Futures ETF [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Investments, fair value disclosure		49,996,279	79,550,891
Level I - Quoted Prices [Member] | Short-Term U.S. Government and Agencies [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Investments, fair value disclosure		690,474,277	1,466,680,542
Level I - Quoted Prices [Member] | Futures Contracts [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Investments, fair value disclosure	[1]	45,063,431	(196,609,804)
Level I - Quoted Prices [Member] | ProShares Short VIX Short-Term Futures ETF [Member] | Short-Term U.S. Government and Agencies [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Investments, fair value disclosure		109,410,342	144,307,676
Level I - Quoted Prices [Member] | ProShares Short VIX Short-Term Futures ETF [Member] | Futures Contracts [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Investments, fair value disclosure	[1]	12,640,624	11,092,381
Level I - Quoted Prices [Member] | ProShares Ultra Bloomberg Crude Oil [Member] | Short-Term U.S. Government and Agencies [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Investments, fair value disclosure		233,476,941	313,465,007
Level I - Quoted Prices [Member] | ProShares Ultra Bloomberg Crude Oil [Member] | Futures Contracts [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Investments, fair value disclosure	[1]	(3,515,232)	26,291,716
Level I - Quoted Prices [Member] | ProShares Ultra Bloomberg Natural Gas [Member] | Short-Term U.S. Government and Agencies [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Investments, fair value disclosure		64,459,117	263,260,158
Level I - Quoted Prices [Member] | ProShares Ultra Bloomberg Natural Gas [Member] | Futures Contracts [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Investments, fair value disclosure	[1]	43,607,070	(310,613,969)
Level I - Quoted Prices [Member] | ProShares Ultra Gold [Member] | Short-Term U.S. Government and Agencies [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Investments, fair value disclosure		59,507,594	129,123,489
Level I - Quoted Prices [Member] | ProShares Ultra Gold [Member] | Futures Contracts [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Investments, fair value disclosure	[1]	4,096,275	3,242,088
Level I - Quoted Prices [Member] | ProShares Ultra Silver [Member] | Short-Term U.S. Government and Agencies [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Investments, fair value disclosure		114,276,025	228,657,634
Level I - Quoted Prices [Member] | ProShares Ultra Silver [Member] | Futures Contracts [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Investments, fair value disclosure	[1]	12,400,748	29,426,574
Level I - Quoted Prices [Member] | ProShares Ultra VIX Short-Term Futures ETF [Member] | Short-Term U.S. Government and Agencies [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Investments, fair value disclosure			34,732,372
Level I - Quoted Prices [Member] | ProShares Ultra VIX Short-Term Futures ETF [Member] | Futures Contracts [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Investments, fair value disclosure	[1]	(31,183,911)	(36,555,453)
Level I - Quoted Prices [Member] | ProShares UltraShort Bloomberg Crude Oil [Member] | Short-Term U.S. Government and Agencies [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Investments, fair value disclosure		49,683,885	89,426,935
Level I - Quoted Prices [Member] | ProShares UltraShort Bloomberg Crude Oil [Member] | Futures Contracts [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Investments, fair value disclosure	[1]	22,436,319	10,244,893
Level I - Quoted Prices [Member] | ProShares UltraShort Bloomberg Natural Gas [Member] | Short-Term U.S. Government and Agencies [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Investments, fair value disclosure			61,482,526
Level I - Quoted Prices [Member] | ProShares UltraShort Bloomberg Natural Gas [Member] | Futures Contracts [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Investments, fair value disclosure	[1]	(3,553,507)	85,889,398
Level I - Quoted Prices [Member] | ProShares UltraShort Euro [Member] | Short-Term U.S. Government and Agencies [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Investments, fair value disclosure			39,996,624
Level I - Quoted Prices [Member] | ProShares UltraShort Gold [Member] | Futures Contracts [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Investments, fair value disclosure	[1]	(144,231)	(98,886)
Level I - Quoted Prices [Member] | ProShares UltraShort Silver [Member] | Futures Contracts [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Investments, fair value disclosure	[1]	1,689,046	(940,500)
Level I - Quoted Prices [Member] | ProShares UltraShort Yen [Member] | Short-Term U.S. Government and Agencies [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Investments, fair value disclosure			22,998,059
Level I - Quoted Prices [Member] | ProShares VIX Mid-Term Futures ETF [Member] | Short-Term U.S. Government and Agencies [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Investments, fair value disclosure			49,882,348
Level I - Quoted Prices [Member] | ProShares VIX Mid-Term Futures ETF [Member] | Futures Contracts [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Investments, fair value disclosure	[1]	(3,745,676)	(4,791,223)
Level I - Quoted Prices [Member] | ProShares VIX Short-Term Futures ETF [Member] | Short-Term U.S. Government and Agencies [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Investments, fair value disclosure		59,660,373	89,347,714
Level I - Quoted Prices [Member] | ProShares VIX Short-Term Futures ETF [Member] | Futures Contracts [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Investments, fair value disclosure	[1]	(9,664,094)	(9,796,823)
Level II - Other Significant Observable Inputs [Member] | Foreign Currency Forward Contracts [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Investments, fair value disclosure		(1,334,470)	(4,088,484)
Level II - Other Significant Observable Inputs [Member] | Swap Agreements [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Investments, fair value disclosure		17,192,312	117,564,675
Level II - Other Significant Observable Inputs [Member] | ProShares Ultra Bloomberg Crude Oil [Member] | Swap Agreements [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Investments, fair value disclosure		17,954,935	74,159,577
Level II - Other Significant Observable Inputs [Member] | ProShares Ultra Euro [Member] | Foreign Currency Forward Contracts [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Investments, fair value disclosure		306,949	415,656
Level II - Other Significant Observable Inputs [Member] | ProShares Ultra Gold [Member] | Swap Agreements [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Investments, fair value disclosure		3,078,593	6,496,466
Level II - Other Significant Observable Inputs [Member] | ProShares Ultra Silver [Member] | Swap Agreements [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Investments, fair value disclosure		(2,827,221)	39,224,212
Level II - Other Significant Observable Inputs [Member] | ProShares Ultra Yen [Member] | Foreign Currency Forward Contracts [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Investments, fair value disclosure		1,519,285	984,549
Level II - Other Significant Observable Inputs [Member] | ProShares UltraShort Euro [Member] | Foreign Currency Forward Contracts [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Investments, fair value disclosure		(1,848,779)	(2,461,256)
Level II - Other Significant Observable Inputs [Member] | ProShares UltraShort Gold [Member] | Swap Agreements [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Investments, fair value disclosure		(199,821)	(592,957)
Level II - Other Significant Observable Inputs [Member] | ProShares UltraShort Silver [Member] | Swap Agreements [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Investments, fair value disclosure		(814,174)	(1,722,623)
Level II - Other Significant Observable Inputs [Member] | ProShares UltraShort Yen [Member] | Foreign Currency Forward Contracts [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Investments, fair value disclosure		$ (1,311,925)	$ (3,027,433)
[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

Fair value of investment other than investment in equity security, investment in debt security and equity method investment. Includes, but is not limited to, investment in certain entities that calculate net asset value per share. Example includes, but is not limited to, investment in hedge fund, venture capital fund, private equity fund, and real estate partnership or fund.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 820
-SubTopic 10
-Name Accounting Standards Codification
-Section 35
-Paragraph 54B
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482134/820-10-35-54B

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 820
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 6A
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482106/820-10-50-6A

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+ References

No definition available.

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