v2.4.0.8

Schedule of Investments - Foreign Currency Forward Contracts (Detail) (USD $)	6 Months Ended
	Jun. 30, 2014
ProShares UltraShort Euro [Member] | Contracts to Purchase [Member]
Schedule of Investments [Line Items]
Unrealized Appreciation (Depreciation)	$ 327,971	[1]
ProShares UltraShort Euro [Member] | Contracts to Purchase [Member] | Euro with Goldman Sachs International [Member]
Schedule of Investments [Line Items]
Settlement Date	Jul. 11, 2014	[1]
Local Currency	28,302,000	[1]
Notional Amount at Value	38,755,476	[1]
Unrealized Appreciation (Depreciation)	254,665	[1]
ProShares UltraShort Euro [Member] | Contracts to Purchase [Member] | Euro with UBS AG [Member]
Schedule of Investments [Line Items]
Settlement Date	Jul. 11, 2014	[1]
Local Currency	27,582,600	[1]
Notional Amount at Value	37,770,362	[1]
Unrealized Appreciation (Depreciation)	73,306	[1]
ProShares UltraShort Euro [Member] | Contracts to Sell [Member]
Schedule of Investments [Line Items]
Unrealized Appreciation (Depreciation)	(5,915,312)	[1]
ProShares UltraShort Euro [Member] | Contracts to Sell [Member] | Euro with Goldman Sachs International [Member]
Schedule of Investments [Line Items]
Settlement Date	Jul. 11, 2014	[1]
Local Currency	(351,137,125)	[1]
Notional Amount at Value	(480,831,260)	[1]
Unrealized Appreciation (Depreciation)	(2,982,819)	[1]
ProShares UltraShort Euro [Member] | Contracts to Sell [Member] | Euro with UBS AG [Member]
Schedule of Investments [Line Items]
Settlement Date	Jul. 11, 2014	[1]
Local Currency	(347,608,700)	[1]
Notional Amount at Value	(475,999,595)	[1]
Unrealized Appreciation (Depreciation)	(2,932,493)	[1]
ProShares UltraShort Yen [Member] | Contracts to Purchase [Member]
Schedule of Investments [Line Items]
Unrealized Appreciation (Depreciation)	480,205	[1]
ProShares UltraShort Yen [Member] | Contracts to Purchase [Member] | Yen with Goldman Sachs International [Member]
Schedule of Investments [Line Items]
Settlement Date	Jul. 11, 2014	[1]
Local Currency	4,021,491,200	[1]
Notional Amount at Value	39,699,116	[1]
Unrealized Appreciation (Depreciation)	194,323	[1]
ProShares UltraShort Yen [Member] | Contracts to Purchase [Member] | Yen with UBS AG [Member]
Schedule of Investments [Line Items]
Settlement Date	Jul. 11, 2014	[1]
Local Currency	3,928,152,500	[1]
Notional Amount at Value	38,777,700	[1]
Unrealized Appreciation (Depreciation)	285,882	[1]
ProShares UltraShort Yen [Member] | Contracts to Sell [Member]
Schedule of Investments [Line Items]
Unrealized Appreciation (Depreciation)	(10,127,815)	[1]
ProShares UltraShort Yen [Member] | Contracts to Sell [Member] | Yen with Goldman Sachs International [Member]
Schedule of Investments [Line Items]
Settlement Date	Jul. 11, 2014	[1]
Local Currency	(39,448,933,400)	[1]
Notional Amount at Value	(389,429,615)	[1]
Unrealized Appreciation (Depreciation)	(4,987,745)	[1]
ProShares UltraShort Yen [Member] | Contracts to Sell [Member] | Yen with UBS AG [Member]
Schedule of Investments [Line Items]
Settlement Date	Jul. 11, 2014	[1]
Local Currency	(40,348,769,000)	[1]
Notional Amount at Value	(398,312,558)	[1]
Unrealized Appreciation (Depreciation)	(5,140,070)	[1]
ProShares Ultra Euro [Member] | Contracts to Purchase [Member]
Schedule of Investments [Line Items]
Unrealized Appreciation (Depreciation)	31,105	[1]
ProShares Ultra Euro [Member] | Contracts to Purchase [Member] | Euro with Goldman Sachs International [Member]
Schedule of Investments [Line Items]
Settlement Date	Jul. 11, 2014	[1]
Local Currency	733,425	[1]
Notional Amount at Value	1,004,319	[1]
Unrealized Appreciation (Depreciation)	6,027	[1]
ProShares Ultra Euro [Member] | Contracts to Purchase [Member] | Euro with UBS AG [Member]
Schedule of Investments [Line Items]
Settlement Date	Jul. 11, 2014	[1]
Local Currency	3,046,300	[1]
Notional Amount at Value	4,171,465	[1]
Unrealized Appreciation (Depreciation)	25,078	[1]
ProShares Ultra Euro [Member] | Contracts to Sell [Member]
Schedule of Investments [Line Items]
Unrealized Appreciation (Depreciation)	(378)	[1]
ProShares Ultra Euro [Member] | Contracts to Sell [Member] | Euro with Goldman Sachs International [Member]
Schedule of Investments [Line Items]
Settlement Date	Jul. 11, 2014	[1]
Local Currency	(30,700)	[1]
Notional Amount at Value	(42,040)	[1]
Unrealized Appreciation (Depreciation)	(378)	[1]
ProShares Ultra Yen [Member] | Contracts to Purchase [Member]
Schedule of Investments [Line Items]
Unrealized Appreciation (Depreciation)	76,915	[1]
ProShares Ultra Yen [Member] | Contracts to Purchase [Member] | Yen with Goldman Sachs International [Member]
Schedule of Investments [Line Items]
Settlement Date	Jul. 11, 2014	[1]
Local Currency	291,065,100	[1]
Notional Amount at Value	2,873,319	[1]
Unrealized Appreciation (Depreciation)	36,272	[1]
ProShares Ultra Yen [Member] | Contracts to Purchase [Member] | Yen with UBS AG [Member]
Schedule of Investments [Line Items]
Settlement Date	Jul. 11, 2014	[1]
Local Currency	317,397,400	[1]
Notional Amount at Value	3,133,265	[1]
Unrealized Appreciation (Depreciation)	40,643	[1]
ProShares Ultra Yen [Member] | Contracts to Sell [Member]
Schedule of Investments [Line Items]
Unrealized Appreciation (Depreciation)	(24,196)	[1]
ProShares Ultra Yen [Member] | Contracts to Sell [Member] | Yen with Goldman Sachs International [Member]
Schedule of Investments [Line Items]
Settlement Date	Jul. 11, 2014	[1]
Local Currency	(202,709,800)	[1]
Notional Amount at Value	(2,001,098)	[1]
Unrealized Appreciation (Depreciation)	(24,099)	[1]
ProShares Ultra Yen [Member] | Contracts to Sell [Member] | Yen with UBS AG [Member]
Schedule of Investments [Line Items]
Settlement Date	Jul. 11, 2014	[1]
Local Currency	(1,488,900)	[1]
Notional Amount at Value	(14,698)	[1]
Unrealized Appreciation (Depreciation)	$ (97)	[1]
[1] The positions and counterparties herein are as of June 30, 2014. The Funds continually evaluate different counterparties for their transactions and counterparties are subject to change. New counterparties can be added at anytime.

X

- Definition

Local currency.

+ References

No definition available.

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X

- Definition

Long (Short) Investment Owned Underlying Face Amount at Market Value

+ References

No definition available.

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X

- Definition

Settlement Date One

+ References

No definition available.

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X

- Definition

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

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 946

-SubTopic 320

-Section S99

-Paragraph 22

-URI http://asc.fasb.org/extlink&oid=6955306&loc=SL6090603-123010

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