v2.4.0.8

Schedule of Investments - Foreign Currency Forward Contracts (Detail) (USD $) | Mar. 31, 2014
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ProShares UltraShort Euro [Member] | Contracts to Purchase [Member] |  |
Schedule of Investments [Line Items] |  |
Unrealized Appreciation (Depreciation) | $ (375,347) | [1]
ProShares UltraShort Euro [Member] | Contracts to Purchase [Member] | Euro with Goldman Sachs International [Member] |  |
Schedule of Investments [Line Items] |  |
Settlement Date | Apr. 04, 2014 | [1]
Local Currency | 18,383,800 | [1]
Notional Amount at Value | 25,325,422 | [1]
Unrealized Appreciation (Depreciation) | (150,026) | [1]
ProShares UltraShort Euro [Member] | Contracts to Purchase [Member] | Euro with UBS AG [Member] |  |
Schedule of Investments [Line Items] |  |
Settlement Date | Apr. 04, 2014 | [1]
Local Currency | 26,715,000 | [1]
Notional Amount at Value | 36,802,438 | [1]
Unrealized Appreciation (Depreciation) | (225,321) | [1]
ProShares UltraShort Euro [Member] | Contracts to Sell [Member] |  |
Schedule of Investments [Line Items] |  |
Unrealized Appreciation (Depreciation) | (3,348,963) | [1]
ProShares UltraShort Euro [Member] | Contracts to Sell [Member] | Euro with Goldman Sachs International [Member] |  |
Schedule of Investments [Line Items] |  |
Settlement Date | Apr. 04, 2014 | [1]
Local Currency | (315,847,325) | [1]
Notional Amount at Value | (435,109,546) | [1]
Unrealized Appreciation (Depreciation) | (1,548,826) | [1]
ProShares UltraShort Euro [Member] | Contracts to Sell [Member] | Euro with UBS AG [Member] |  |
Schedule of Investments [Line Items] |  |
Settlement Date | Apr. 04, 2014 | [1]
Local Currency | (324,757,500) | [1]
Notional Amount at Value | (447,384,155) | [1]
Unrealized Appreciation (Depreciation) | (1,800,137) | [1]
ProShares UltraShort Yen [Member] | Contracts to Purchase [Member] |  |
Schedule of Investments [Line Items] |  |
Unrealized Appreciation (Depreciation) | (1,275,150) | [1]
ProShares UltraShort Yen [Member] | Contracts to Purchase [Member] | Yen with Goldman Sachs International [Member] |  |
Schedule of Investments [Line Items] |  |
Settlement Date | Apr. 04, 2014 | [1]
Local Currency | 7,547,835,100 | [1]
Notional Amount at Value | 73,124,249 | [1]
Unrealized Appreciation (Depreciation) | (874,876) | [1]
ProShares UltraShort Yen [Member] | Contracts to Purchase [Member] | Yen with UBS AG [Member] |  |
Schedule of Investments [Line Items] |  |
Settlement Date | Apr. 04, 2014 | [1]
Local Currency | 3,218,173,300 | [1]
Notional Amount at Value | 31,178,013 | [1]
Unrealized Appreciation (Depreciation) | (400,274) | [1]
ProShares UltraShort Yen [Member] | Contracts to Sell [Member] |  |
Schedule of Investments [Line Items] |  |
Unrealized Appreciation (Depreciation) | 6,121,534 | [1]
ProShares UltraShort Yen [Member] | Contracts to Sell [Member] | Yen with Goldman Sachs International [Member] |  |
Schedule of Investments [Line Items] |  |
Settlement Date | Apr. 04, 2014 | [1]
Local Currency | (48,716,397,300) | [1]
Notional Amount at Value | (471,969,766) | [1]
Unrealized Appreciation (Depreciation) | 3,209,960 | [1]
ProShares UltraShort Yen [Member] | Contracts to Sell [Member] | Yen with UBS AG [Member] |  |
Schedule of Investments [Line Items] |  |
Settlement Date | Apr. 04, 2014 | [1]
Local Currency | (45,710,614,400) | [1]
Notional Amount at Value | (442,849,413) | [1]
Unrealized Appreciation (Depreciation) | 2,911,574 | [1]
ProShares Ultra Euro [Member] | Contracts to Purchase [Member] |  |
Schedule of Investments [Line Items] |  |
Unrealized Appreciation (Depreciation) | 20,795 | [1]
ProShares Ultra Euro [Member] | Contracts to Purchase [Member] | Euro with Goldman Sachs International [Member] |  |
Schedule of Investments [Line Items] |  |
Settlement Date | Apr. 04, 2014 | [1]
Local Currency | 788,225 | [1]
Notional Amount at Value | 1,085,855 | [1]
Unrealized Appreciation (Depreciation) | 4,214 | [1]
ProShares Ultra Euro [Member] | Contracts to Purchase [Member] | Euro with UBS AG [Member] |  |
Schedule of Investments [Line Items] |  |
Settlement Date | Apr. 04, 2014 | [1]
Local Currency | 3,071,000 | [1]
Notional Amount at Value | 4,230,593 | [1]
Unrealized Appreciation (Depreciation) | 16,581 | [1]
ProShares Ultra Euro [Member] | Contracts to Sell [Member] |  |
Schedule of Investments [Line Items] |  |
Unrealized Appreciation (Depreciation) | 189 | [1]
ProShares Ultra Euro [Member] | Contracts to Sell [Member] | Euro with Goldman Sachs International [Member] |  |
Schedule of Investments [Line Items] |  |
Settlement Date | Apr. 04, 2014 | [1]
Local Currency | (51,500) | [1]
Notional Amount at Value | (70,946) | [1]
Unrealized Appreciation (Depreciation) | 224 | [1]
ProShares Ultra Euro [Member] | Contracts to Sell [Member] | Euro with UBS AG [Member] |  |
Schedule of Investments [Line Items] |  |
Settlement Date | Apr. 04, 2014 | [1]
Local Currency | (27,600) | [1]
Notional Amount at Value | (38,021) | [1]
Unrealized Appreciation (Depreciation) | (35) | [1]
ProShares Ultra Yen [Member] | Contracts to Purchase [Member] |  |
Schedule of Investments [Line Items] |  |
Unrealized Appreciation (Depreciation) | (42,233) | [1]
ProShares Ultra Yen [Member] | Contracts to Purchase [Member] | Yen with Goldman Sachs International [Member] |  |
Schedule of Investments [Line Items] |  |
Settlement Date | Apr. 04, 2014 | [1]
Local Currency | 304,953,900 | [1]
Notional Amount at Value | 2,954,426 | [1]
Unrealized Appreciation (Depreciation) | (20,852) | [1]
ProShares Ultra Yen [Member] | Contracts to Purchase [Member] | Yen with UBS AG [Member] |  |
Schedule of Investments [Line Items] |  |
Settlement Date | Apr. 04, 2014 | [1]
Local Currency | 313,415,000 | [1]
Notional Amount at Value | 3,036,399 | [1]
Unrealized Appreciation (Depreciation) | (21,381) | [1]
ProShares Ultra Yen [Member] | Contracts to Sell [Member] |  |
Schedule of Investments [Line Items] |  |
Unrealized Appreciation (Depreciation) | 1,004 | [1]
ProShares Ultra Yen [Member] | Contracts to Sell [Member] | Yen with Goldman Sachs International [Member] |  |
Schedule of Investments [Line Items] |  |
Settlement Date | Apr. 04, 2014 | [1]
Local Currency | (13,523,300) | [1]
Notional Amount at Value | (131,016) | [1]
Unrealized Appreciation (Depreciation) | 929 | [1]
ProShares Ultra Yen [Member] | Contracts to Sell [Member] | Yen with UBS AG [Member] |  |
Schedule of Investments [Line Items] |  |
Settlement Date | Apr. 04, 2014 | [1]
Local Currency | (6,832,900) | [1]
Notional Amount at Value | (66,198) | [1]
Unrealized Appreciation (Depreciation) | $ 75 | [1]
[1] | The positions and counterparties herein are as of March 31, 2014. The Funds continually evaluate different counterparties for their transactions and counterparties are subject to change. New counterparties can be added at anytime.

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