v3.22.2

Significant Accounting Policies - Valuation of Investments using Fair Value Hierarchy (Detail) - USD ($)		Jun. 30, 2022	Dec. 31, 2021
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Investments, fair value disclosure		$ 1,955,263,379	$ 2,638,188,751
ProShares Short Euro [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Investments, fair value disclosure			(5,400)
ProShares Short VIX Short-Term Futures ETF [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Investments, fair value disclosure		152,935,969	179,090,997
ProShares Ultra Bloomberg Crude Oil [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Investments, fair value disclosure		432,590,928	1,060,141,385
ProShares Ultra Bloomberg Natural Gas [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Investments, fair value disclosure		(88,687,053)	82,716,277
ProShares Ultra Euro [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Investments, fair value disclosure		4,358,308	1,080,330
ProShares Ultra Gold [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Investments, fair value disclosure		198,312,080	217,250,402
ProShares Ultra Silver [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Investments, fair value disclosure		225,728,302	494,971,226
ProShares Ultra VIX Short-Term Futures ETF [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Investments, fair value disclosure		278,695,835	94,826,399
ProShares Ultra Yen [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Investments, fair value disclosure		915,819	(93,112)
ProShares UltraShort Australian Dollar [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Investments, fair value disclosure			1,934,720
ProShares UltraShort Bloomberg Crude Oil [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Investments, fair value disclosure		261,152,437	47,506,561
ProShares UltraShort Bloomberg Natural Gas [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Investments, fair value disclosure		213,648,469	137,257,799
ProShares UltraShort Euro [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Investments, fair value disclosure		23,080,195	46,753,084
ProShares UltraShort Gold [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Investments, fair value disclosure		15,472,713	25,145,478
ProShares UltraShort Silver [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Investments, fair value disclosure		17,369,296	21,725,340
ProShares UltraShort Yen [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Investments, fair value disclosure		11,932,766	21,857,405
ProShares VIX Mid-Term Futures ETF [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Investments, fair value disclosure		34,855,669	85,298,581
ProShares VIX Short-Term Futures ETF [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Investments, fair value disclosure		172,901,646	120,731,279
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		2,082,952,015	2,505,429,337
Level I - Quoted Prices [Member] | Futures Contracts [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Investments, fair value disclosure	[1]	85,111,242	22,341,123
Level I - Quoted Prices [Member] | ProShares Short Euro [Member] | Futures Contracts [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Investments, fair value disclosure	[1]		(5,400)
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		151,418,355	147,815,719
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]	1,517,614	31,275,278
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		526,423,284	848,757,567
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]	58,454,799	147,455,525
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		105,739,904	90,922,438
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]	(194,426,957)	(8,206,161)
Level I - Quoted Prices [Member] | ProShares Ultra Euro [Member] | Short-Term U.S. Government and Agencies [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Investments, fair value disclosure		4,690,703	997,678
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		208,696,447	207,956,320
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]	(3,932,509)	654,894
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		290,458,173	451,872,982
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]	(4,317,941)	2,506,545
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		243,251,317	221,660,593
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]	35,444,518	(126,356,757)
Level I - Quoted Prices [Member] | ProShares Ultra Yen [Member] | Short-Term U.S. Government and Agencies [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Investments, fair value disclosure		992,969
Level I - Quoted Prices [Member] | ProShares UltraShort Australian Dollar [Member] | Short-Term U.S. Government and Agencies [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Investments, fair value disclosure			1,999,875
Level I - Quoted Prices [Member] | ProShares UltraShort Australian Dollar [Member] | Futures Contracts [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Investments, fair value disclosure	[1]		(65,155)
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		232,635,606	55,916,023
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]	28,516,831	(8,409,462)
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		59,578,128	123,821,548
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]	154,070,341	13,436,251
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		19,885,112	46,961,125
Level I - Quoted Prices [Member] | ProShares UltraShort Euro [Member] | Futures Contracts [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Investments, fair value disclosure	[1]		0
Level I - Quoted Prices [Member] | ProShares UltraShort Gold [Member] | Short-Term U.S. Government and Agencies [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Investments, fair value disclosure		13,940,167	25,980,516
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]	811,562	158,079
Level I - Quoted Prices [Member] | ProShares UltraShort Silver [Member] | Short-Term U.S. Government and Agencies [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Investments, fair value disclosure		12,979,368	22,994,261
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]	2,516,890	652,493
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		10,961,261	20,987,825
Level I - Quoted Prices [Member] | ProShares UltraShort Yen [Member] | Futures Contracts [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Investments, fair value disclosure	[1]		0
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		31,775,002	85,922,969
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]	3,080,667	(624,388)
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		169,526,219	150,861,898
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]	3,375,427	(30,130,619)
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		3,757,043	651,079
Level II - Other Significant Observable Inputs [Member] | Swap Agreements [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Investments, fair value disclosure		(216,556,921)	109,767,212
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		(152,287,155)	63,928,293
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		(332,395)	82,652
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		(6,451,858)	8,639,188
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		(60,411,930)	40,591,699
Level II - Other Significant Observable Inputs [Member] | ProShares Ultra VIX Short-Term Futures ETF [Member] | Swap Agreements [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Investments, fair value disclosure			(477,437)
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		(77,150)	(93,112)
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		3,195,083	(208,041)
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		720,984	(993,117)
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		1,873,038	(1,921,414)
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		$ 971,505	$ 869,580
[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
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 6A
-Subparagraph (a)
-URI https://asc.fasb.org/extlink&oid=126976982&loc=SL6742756-110258

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 35
-Paragraph 54B
-URI https://asc.fasb.org/extlink&oid=126972413&loc=SL7495116-110257

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+ References

No definition available.

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