|
Significant Accounting Policies - Valuation of Investments (Detail) (USD $)
|
6 Months Ended | 12 Months Ended |
|---|---|---|
|
Jun. 30, 2014
|
Dec. 31, 2013
|
|
| Significant Accounting Policies [Line Items] | ||
| Level III portfolio investments | $ 0 | $ 0 |
|
ProShares UltraShort Bloomberg Commodity [Member]
|
||
| Significant Accounting Policies [Line Items] | ||
| Investments, fair value disclosure | 2,925,908 | 3,426,225 |
|
ProShares UltraShort Bloomberg Crude Oil [Member]
|
||
| Significant Accounting Policies [Line Items] | ||
| Investments, fair value disclosure | 343,160,810 | 244,018,950 |
|
ProShares UltraShort Bloomberg Natural Gas [Member]
|
||
| Significant Accounting Policies [Line Items] | ||
| Investments, fair value disclosure | 46,595,656 | 19,317,013 |
|
ProShares UltraShort Gold [Member]
|
||
| Significant Accounting Policies [Line Items] | ||
| Investments, fair value disclosure | 83,612,875 | 154,635,902 |
|
ProShares UltraShort Silver [Member]
|
||
| Significant Accounting Policies [Line Items] | ||
| Investments, fair value disclosure | 51,955,001 | 112,612,409 |
|
ProShares Short Euro [Member]
|
||
| Significant Accounting Policies [Line Items] | ||
| Investments, fair value disclosure | 12,678,998 | 7,868,825 |
|
ProShares UltraShort Australian Dollar [Member]
|
||
| Significant Accounting Policies [Line Items] | ||
| Investments, fair value disclosure | 17,405,589 | 25,116,112 |
|
ProShares UltraShort Euro [Member]
|
||
| Significant Accounting Policies [Line Items] | ||
| Investments, fair value disclosure | 440,281,827 | 424,098,652 |
|
ProShares UltraShort Yen [Member]
|
||
| Significant Accounting Policies [Line Items] | ||
| Investments, fair value disclosure | 353,528,754 | 587,983,948 |
|
ProShares Ultra Bloomberg Commodity [Member]
|
||
| Significant Accounting Policies [Line Items] | ||
| Investments, fair value disclosure | 3,175,774 | 2,831,766 |
|
ProShares Ultra Bloomberg Crude Oil [Member]
|
||
| Significant Accounting Policies [Line Items] | ||
| Investments, fair value disclosure | 98,194,086 | 140,020,164 |
|
ProShares Ultra Bloomberg Natural Gas [Member]
|
||
| Significant Accounting Policies [Line Items] | ||
| Investments, fair value disclosure | 14,108,698 | 55,264,472 |
|
ProShares Ultra Gold [Member]
|
||
| Significant Accounting Policies [Line Items] | ||
| Investments, fair value disclosure | 135,425,170 | 134,053,416 |
|
ProShares Ultra Silver [Member]
|
||
| Significant Accounting Policies [Line Items] | ||
| Investments, fair value disclosure | 511,426,066 | 465,361,896 |
|
ProShares Ultra Australian Dollar [Member]
|
||
| Significant Accounting Policies [Line Items] | ||
| Investments, fair value disclosure | 3,150,916 | 2,598,219 |
|
ProShares Ultra Euro [Member]
|
||
| Significant Accounting Policies [Line Items] | ||
| Investments, fair value disclosure | 2,517,499 | 2,556,825 |
|
ProShares Ultra Yen [Member]
|
||
| Significant Accounting Policies [Line Items] | ||
| Investments, fair value disclosure | 1,532,537 | 2,769,247 |
|
ProShares VIX Short-Term Futures ETF [Member]
|
||
| Significant Accounting Policies [Line Items] | ||
| Investments, fair value disclosure | 70,970,640 | 190,983,697 |
|
ProShares VIX Mid-Term Futures ETF [Member]
|
||
| Significant Accounting Policies [Line Items] | ||
| Investments, fair value disclosure | 30,886,213 | 41,143,544 |
|
ProShares Ultra VIX Short-Term Futures ETF [Member]
|
||
| Significant Accounting Policies [Line Items] | ||
| Investments, fair value disclosure | 137,383,081 | 85,523,576 |
|
ProShares Short VIX Short-Term Futures ETF [Member]
|
||
| Significant Accounting Policies [Line Items] | ||
| Investments, fair value disclosure | 159,215,027 | 113,675,977 |
|
Total Trust [Member]
|
||
| Significant Accounting Policies [Line Items] | ||
| Investments, fair value disclosure | 2,520,131,125 | 2,815,860,835 |
|
Level I - Quoted Prices [Member] | ProShares UltraShort Bloomberg Commodity [Member] | Short-Term U.S. Government and Agencies [Member]
|
||
| Significant Accounting Policies [Line Items] | ||
| Investments, fair value disclosure | 2,975,627 | 3,453,890 |
|
Level I - Quoted Prices [Member] | ProShares UltraShort Bloomberg Commodity [Member] | VIX Futures Contracts [Member]
|
||
| Significant Accounting Policies [Line Items] | ||
| Investments, fair value disclosure | 0 | 0 |
|
Level I - Quoted Prices [Member] | ProShares UltraShort Bloomberg Crude Oil [Member] | Short-Term U.S. Government and Agencies [Member]
|
||
| Significant Accounting Policies [Line Items] | ||
| Investments, fair value disclosure | 364,434,603 | 247,584,623 |
|
Level I - Quoted Prices [Member] | ProShares UltraShort Bloomberg Crude Oil [Member] | VIX Futures Contracts [Member]
|
||
| Significant Accounting Policies [Line Items] | ||
| Investments, fair value disclosure | (5,168,641) | (1,232,773) |
|
Level I - Quoted Prices [Member] | ProShares UltraShort Bloomberg Natural Gas [Member] | Short-Term U.S. Government and Agencies [Member]
|
||
| Significant Accounting Policies [Line Items] | ||
| Investments, fair value disclosure | 44,127,812 | 18,274,713 |
|
Level I - Quoted Prices [Member] | ProShares UltraShort Bloomberg Natural Gas [Member] | VIX Futures Contracts [Member]
|
||
| Significant Accounting Policies [Line Items] | ||
| Investments, fair value disclosure | 2,467,844 | 1,042,300 |
|
Level I - Quoted Prices [Member] | ProShares UltraShort Gold [Member] | Short-Term U.S. Government and Agencies [Member]
|
||
| Significant Accounting Policies [Line Items] | ||
| Investments, fair value disclosure | 94,201,223 | 148,988,329 |
|
Level I - Quoted Prices [Member] | ProShares UltraShort Gold [Member] | VIX Futures Contracts [Member]
|
||
| Significant Accounting Policies [Line Items] | ||
| Investments, fair value disclosure | (4,840) | 14,520 |
|
Level I - Quoted Prices [Member] | ProShares UltraShort Silver [Member] | Short-Term U.S. Government and Agencies [Member]
|
||
| Significant Accounting Policies [Line Items] | ||
| Investments, fair value disclosure | 62,535,124 | 114,826,066 |
|
Level I - Quoted Prices [Member] | ProShares UltraShort Silver [Member] | VIX Futures Contracts [Member]
|
||
| Significant Accounting Policies [Line Items] | ||
| Investments, fair value disclosure | (16,910) | 14,200 |
|
Level I - Quoted Prices [Member] | ProShares Short Euro [Member] | Short-Term U.S. Government and Agencies [Member]
|
||
| Significant Accounting Policies [Line Items] | ||
| Investments, fair value disclosure | 12,790,157 | 7,902,056 |
|
Level I - Quoted Prices [Member] | ProShares Short Euro [Member] | VIX Futures Contracts [Member]
|
||
| Significant Accounting Policies [Line Items] | ||
| Investments, fair value disclosure | (111,159) | (33,231) |
|
Level I - Quoted Prices [Member] | ProShares UltraShort Australian Dollar [Member] | Short-Term U.S. Government and Agencies [Member]
|
||
| Significant Accounting Policies [Line Items] | ||
| Investments, fair value disclosure | 17,768,429 | 24,198,507 |
|
Level I - Quoted Prices [Member] | ProShares UltraShort Australian Dollar [Member] | VIX Futures Contracts [Member]
|
||
| Significant Accounting Policies [Line Items] | ||
| Investments, fair value disclosure | (362,840) | 917,605 |
|
Level I - Quoted Prices [Member] | ProShares UltraShort Euro [Member] | Short-Term U.S. Government and Agencies [Member]
|
||
| Significant Accounting Policies [Line Items] | ||
| Investments, fair value disclosure | 445,869,168 | 437,847,159 |
|
Level I - Quoted Prices [Member] | ProShares UltraShort Euro [Member] | VIX Futures Contracts [Member]
|
||
| Significant Accounting Policies [Line Items] | ||
| Investments, fair value disclosure | 0 | 0 |
|
Level I - Quoted Prices [Member] | ProShares UltraShort Yen [Member] | Short-Term U.S. Government and Agencies [Member]
|
||
| Significant Accounting Policies [Line Items] | ||
| Investments, fair value disclosure | 363,176,364 | 558,597,264 |
|
Level I - Quoted Prices [Member] | ProShares UltraShort Yen [Member] | VIX Futures Contracts [Member]
|
||
| Significant Accounting Policies [Line Items] | ||
| Investments, fair value disclosure | 0 | 0 |
|
Level I - Quoted Prices [Member] | ProShares Ultra Bloomberg Commodity [Member] | Short-Term U.S. Government and Agencies [Member]
|
||
| Significant Accounting Policies [Line Items] | ||
| Investments, fair value disclosure | 3,166,730 | 2,816,688 |
|
Level I - Quoted Prices [Member] | ProShares Ultra Bloomberg Commodity [Member] | VIX Futures Contracts [Member]
|
||
| Significant Accounting Policies [Line Items] | ||
| Investments, fair value disclosure | 0 | 0 |
|
Level I - Quoted Prices [Member] | ProShares Ultra Bloomberg Crude Oil [Member] | Short-Term U.S. Government and Agencies [Member]
|
||
| Significant Accounting Policies [Line Items] | ||
| Investments, fair value disclosure | 92,959,952 | 137,435,610 |
|
Level I - Quoted Prices [Member] | ProShares Ultra Bloomberg Crude Oil [Member] | VIX Futures Contracts [Member]
|
||
| Significant Accounting Policies [Line Items] | ||
| Investments, fair value disclosure | 1,123,104 | 626,661 |
|
Level I - Quoted Prices [Member] | ProShares Ultra Bloomberg Natural Gas [Member] | Short-Term U.S. Government and Agencies [Member]
|
||
| Significant Accounting Policies [Line Items] | ||
| Investments, fair value disclosure | 15,519,463 | 58,921,011 |
|
Level I - Quoted Prices [Member] | ProShares Ultra Bloomberg Natural Gas [Member] | VIX Futures Contracts [Member]
|
||
| Significant Accounting Policies [Line Items] | ||
| Investments, fair value disclosure | (1,410,765) | (3,656,539) |
|
Level I - Quoted Prices [Member] | ProShares Ultra Gold [Member] | Short-Term U.S. Government and Agencies [Member]
|
||
| Significant Accounting Policies [Line Items] | ||
| Investments, fair value disclosure | 122,192,435 | 140,880,950 |
|
Level I - Quoted Prices [Member] | ProShares Ultra Gold [Member] | VIX Futures Contracts [Member]
|
||
| Significant Accounting Policies [Line Items] | ||
| Investments, fair value disclosure | 4,820 | (14,560) |
|
Level I - Quoted Prices [Member] | ProShares Ultra Silver [Member] | Short-Term U.S. Government and Agencies [Member]
|
||
| Significant Accounting Policies [Line Items] | ||
| Investments, fair value disclosure | 424,515,400 | 467,868,976 |
|
Level I - Quoted Prices [Member] | ProShares Ultra Silver [Member] | VIX Futures Contracts [Member]
|
||
| Significant Accounting Policies [Line Items] | ||
| Investments, fair value disclosure | 8,455 | (14,200) |
|
Level I - Quoted Prices [Member] | ProShares Ultra Australian Dollar [Member] | Short-Term U.S. Government and Agencies [Member]
|
||
| Significant Accounting Policies [Line Items] | ||
| Investments, fair value disclosure | 3,087,416 | 2,716,439 |
|
Level I - Quoted Prices [Member] | ProShares Ultra Australian Dollar [Member] | VIX Futures Contracts [Member]
|
||
| Significant Accounting Policies [Line Items] | ||
| Investments, fair value disclosure | 63,500 | (118,220) |
|
Level I - Quoted Prices [Member] | ProShares Ultra Euro [Member] | Short-Term U.S. Government and Agencies [Member]
|
||
| Significant Accounting Policies [Line Items] | ||
| Investments, fair value disclosure | 2,486,772 | 2,455,863 |
|
Level I - Quoted Prices [Member] | ProShares Ultra Euro [Member] | VIX Futures Contracts [Member]
|
||
| Significant Accounting Policies [Line Items] | ||
| Investments, fair value disclosure | 0 | 0 |
|
Level I - Quoted Prices [Member] | ProShares Ultra Yen [Member] | Short-Term U.S. Government and Agencies [Member]
|
||
| Significant Accounting Policies [Line Items] | ||
| Investments, fair value disclosure | 1,479,818 | 2,928,556 |
|
Level I - Quoted Prices [Member] | ProShares Ultra Yen [Member] | VIX Futures Contracts [Member]
|
||
| Significant Accounting Policies [Line Items] | ||
| Investments, fair value disclosure | 0 | 0 |
|
Level I - Quoted Prices [Member] | ProShares VIX Short-Term Futures ETF [Member] | Short-Term U.S. Government and Agencies [Member]
|
||
| Significant Accounting Policies [Line Items] | ||
| Investments, fair value disclosure | 77,584,126 | 207,636,383 |
|
Level I - Quoted Prices [Member] | ProShares VIX Short-Term Futures ETF [Member] | VIX Futures Contracts [Member]
|
||
| Significant Accounting Policies [Line Items] | ||
| Investments, fair value disclosure | (6,613,486) | (16,652,686) |
|
Level I - Quoted Prices [Member] | ProShares VIX Mid-Term Futures ETF [Member] | Short-Term U.S. Government and Agencies [Member]
|
||
| Significant Accounting Policies [Line Items] | ||
| Investments, fair value disclosure | 34,381,263 | 46,040,233 |
|
Level I - Quoted Prices [Member] | ProShares VIX Mid-Term Futures ETF [Member] | VIX Futures Contracts [Member]
|
||
| Significant Accounting Policies [Line Items] | ||
| Investments, fair value disclosure | (3,495,050) | (4,896,689) |
|
Level I - Quoted Prices [Member] | ProShares Ultra VIX Short-Term Futures ETF [Member] | Short-Term U.S. Government and Agencies [Member]
|
||
| Significant Accounting Policies [Line Items] | ||
| Investments, fair value disclosure | 177,916,427 | 109,533,487 |
|
Level I - Quoted Prices [Member] | ProShares Ultra VIX Short-Term Futures ETF [Member] | VIX Futures Contracts [Member]
|
||
| Significant Accounting Policies [Line Items] | ||
| Investments, fair value disclosure | (40,533,346) | (24,009,911) |
|
Level I - Quoted Prices [Member] | ProShares Short VIX Short-Term Futures ETF [Member] | Short-Term U.S. Government and Agencies [Member]
|
||
| Significant Accounting Policies [Line Items] | ||
| Investments, fair value disclosure | 150,294,400 | 105,559,022 |
|
Level I - Quoted Prices [Member] | ProShares Short VIX Short-Term Futures ETF [Member] | VIX Futures Contracts [Member]
|
||
| Significant Accounting Policies [Line Items] | ||
| Investments, fair value disclosure | 8,920,627 | 8,116,955 |
|
Level I - Quoted Prices [Member] | Total Trust [Member] | Short-Term U.S. Government and Agencies [Member]
|
||
| Significant Accounting Policies [Line Items] | ||
| Investments, fair value disclosure | 2,513,462,709 | 2,846,465,825 |
|
Level I - Quoted Prices [Member] | Total Trust [Member] | VIX Futures Contracts [Member]
|
||
| Significant Accounting Policies [Line Items] | ||
| Investments, fair value disclosure | (45,128,687) | (39,896,568) |
|
Level II - Other Significant Observable Inputs [Member] | ProShares UltraShort Bloomberg Commodity [Member] | Forward Agreements [Member]
|
||
| Significant Accounting Policies [Line Items] | ||
| Investments, fair value disclosure | 0 | 0 |
|
Level II - Other Significant Observable Inputs [Member] | ProShares UltraShort Bloomberg Commodity [Member] | Foreign Currency Forward Contracts [Member]
|
||
| Significant Accounting Policies [Line Items] | ||
| Investments, fair value disclosure | 0 | 0 |
|
Level II - Other Significant Observable Inputs [Member] | ProShares UltraShort Bloomberg Commodity [Member] | Swap Agreements [Member]
|
||
| Significant Accounting Policies [Line Items] | ||
| Investments, fair value disclosure | (49,719) | (27,665) |
|
Level II - Other Significant Observable Inputs [Member] | ProShares UltraShort Bloomberg Crude Oil [Member] | Forward Agreements [Member]
|
||
| Significant Accounting Policies [Line Items] | ||
| Investments, fair value disclosure | 0 | 0 |
|
Level II - Other Significant Observable Inputs [Member] | ProShares UltraShort Bloomberg Crude Oil [Member] | Foreign Currency Forward Contracts [Member]
|
||
| Significant Accounting Policies [Line Items] | ||
| Investments, fair value disclosure | 0 | 0 |
|
Level II - Other Significant Observable Inputs [Member] | ProShares UltraShort Bloomberg Crude Oil [Member] | Swap Agreements [Member]
|
||
| Significant Accounting Policies [Line Items] | ||
| Investments, fair value disclosure | (16,105,152) | (2,332,900) |
|
Level II - Other Significant Observable Inputs [Member] | ProShares UltraShort Bloomberg Natural Gas [Member] | Forward Agreements [Member]
|
||
| Significant Accounting Policies [Line Items] | ||
| Investments, fair value disclosure | 0 | 0 |
|
Level II - Other Significant Observable Inputs [Member] | ProShares UltraShort Bloomberg Natural Gas [Member] | Foreign Currency Forward Contracts [Member]
|
||
| Significant Accounting Policies [Line Items] | ||
| Investments, fair value disclosure | 0 | 0 |
|
Level II - Other Significant Observable Inputs [Member] | ProShares UltraShort Bloomberg Natural Gas [Member] | Swap Agreements [Member]
|
||
| Significant Accounting Policies [Line Items] | ||
| Investments, fair value disclosure | 0 | 0 |
|
Level II - Other Significant Observable Inputs [Member] | ProShares UltraShort Gold [Member] | Forward Agreements [Member]
|
||
| Significant Accounting Policies [Line Items] | ||
| Investments, fair value disclosure | (10,583,508) | 5,633,053 |
|
Level II - Other Significant Observable Inputs [Member] | ProShares UltraShort Gold [Member] | Foreign Currency Forward Contracts [Member]
|
||
| Significant Accounting Policies [Line Items] | ||
| Investments, fair value disclosure | 0 | 0 |
|
Level II - Other Significant Observable Inputs [Member] | ProShares UltraShort Gold [Member] | Swap Agreements [Member]
|
||
| Significant Accounting Policies [Line Items] | ||
| Investments, fair value disclosure | 0 | 0 |
|
Level II - Other Significant Observable Inputs [Member] | ProShares UltraShort Silver [Member] | Forward Agreements [Member]
|
||
| Significant Accounting Policies [Line Items] | ||
| Investments, fair value disclosure | (10,563,213) | (2,227,857) |
|
Level II - Other Significant Observable Inputs [Member] | ProShares UltraShort Silver [Member] | Foreign Currency Forward Contracts [Member]
|
||
| Significant Accounting Policies [Line Items] | ||
| Investments, fair value disclosure | 0 | 0 |
|
Level II - Other Significant Observable Inputs [Member] | ProShares UltraShort Silver [Member] | Swap Agreements [Member]
|
||
| Significant Accounting Policies [Line Items] | ||
| Investments, fair value disclosure | 0 | 0 |
|
Level II - Other Significant Observable Inputs [Member] | ProShares Short Euro [Member] | Forward Agreements [Member]
|
||
| Significant Accounting Policies [Line Items] | ||
| Investments, fair value disclosure | 0 | 0 |
|
Level II - Other Significant Observable Inputs [Member] | ProShares Short Euro [Member] | Foreign Currency Forward Contracts [Member]
|
||
| Significant Accounting Policies [Line Items] | ||
| Investments, fair value disclosure | 0 | 0 |
|
Level II - Other Significant Observable Inputs [Member] | ProShares Short Euro [Member] | Swap Agreements [Member]
|
||
| Significant Accounting Policies [Line Items] | ||
| Investments, fair value disclosure | 0 | 0 |
|
Level II - Other Significant Observable Inputs [Member] | ProShares UltraShort Australian Dollar [Member] | Forward Agreements [Member]
|
||
| Significant Accounting Policies [Line Items] | ||
| Investments, fair value disclosure | 0 | 0 |
|
Level II - Other Significant Observable Inputs [Member] | ProShares UltraShort Australian Dollar [Member] | Foreign Currency Forward Contracts [Member]
|
||
| Significant Accounting Policies [Line Items] | ||
| Investments, fair value disclosure | 0 | 0 |
|
Level II - Other Significant Observable Inputs [Member] | ProShares UltraShort Australian Dollar [Member] | Swap Agreements [Member]
|
||
| Significant Accounting Policies [Line Items] | ||
| Investments, fair value disclosure | 0 | 0 |
|
Level II - Other Significant Observable Inputs [Member] | ProShares UltraShort Euro [Member] | Forward Agreements [Member]
|
||
| Significant Accounting Policies [Line Items] | ||
| Investments, fair value disclosure | 0 | 0 |
|
Level II - Other Significant Observable Inputs [Member] | ProShares UltraShort Euro [Member] | Foreign Currency Forward Contracts [Member]
|
||
| Significant Accounting Policies [Line Items] | ||
| Investments, fair value disclosure | (5,587,341) | (13,748,507) |
|
Level II - Other Significant Observable Inputs [Member] | ProShares UltraShort Euro [Member] | Swap Agreements [Member]
|
||
| Significant Accounting Policies [Line Items] | ||
| Investments, fair value disclosure | 0 | 0 |
|
Level II - Other Significant Observable Inputs [Member] | ProShares UltraShort Yen [Member] | Forward Agreements [Member]
|
||
| Significant Accounting Policies [Line Items] | ||
| Investments, fair value disclosure | 0 | 0 |
|
Level II - Other Significant Observable Inputs [Member] | ProShares UltraShort Yen [Member] | Foreign Currency Forward Contracts [Member]
|
||
| Significant Accounting Policies [Line Items] | ||
| Investments, fair value disclosure | (9,647,610) | 29,386,684 |
|
Level II - Other Significant Observable Inputs [Member] | ProShares UltraShort Yen [Member] | Swap Agreements [Member]
|
||
| Significant Accounting Policies [Line Items] | ||
| Investments, fair value disclosure | 0 | 0 |
|
Level II - Other Significant Observable Inputs [Member] | ProShares Ultra Bloomberg Commodity [Member] | Forward Agreements [Member]
|
||
| Significant Accounting Policies [Line Items] | ||
| Investments, fair value disclosure | 0 | 0 |
|
Level II - Other Significant Observable Inputs [Member] | ProShares Ultra Bloomberg Commodity [Member] | Foreign Currency Forward Contracts [Member]
|
||
| Significant Accounting Policies [Line Items] | ||
| Investments, fair value disclosure | 0 | 0 |
|
Level II - Other Significant Observable Inputs [Member] | ProShares Ultra Bloomberg Commodity [Member] | Swap Agreements [Member]
|
||
| Significant Accounting Policies [Line Items] | ||
| Investments, fair value disclosure | 9,044 | 15,078 |
|
Level II - Other Significant Observable Inputs [Member] | ProShares Ultra Bloomberg Crude Oil [Member] | Forward Agreements [Member]
|
||
| Significant Accounting Policies [Line Items] | ||
| Investments, fair value disclosure | 0 | 0 |
|
Level II - Other Significant Observable Inputs [Member] | ProShares Ultra Bloomberg Crude Oil [Member] | Foreign Currency Forward Contracts [Member]
|
||
| Significant Accounting Policies [Line Items] | ||
| Investments, fair value disclosure | 0 | 0 |
|
Level II - Other Significant Observable Inputs [Member] | ProShares Ultra Bloomberg Crude Oil [Member] | Swap Agreements [Member]
|
||
| Significant Accounting Policies [Line Items] | ||
| Investments, fair value disclosure | 4,111,030 | 1,957,893 |
|
Level II - Other Significant Observable Inputs [Member] | ProShares Ultra Bloomberg Natural Gas [Member] | Forward Agreements [Member]
|
||
| Significant Accounting Policies [Line Items] | ||
| Investments, fair value disclosure | 0 | 0 |
|
Level II - Other Significant Observable Inputs [Member] | ProShares Ultra Bloomberg Natural Gas [Member] | Foreign Currency Forward Contracts [Member]
|
||
| Significant Accounting Policies [Line Items] | ||
| Investments, fair value disclosure | 0 | 0 |
|
Level II - Other Significant Observable Inputs [Member] | ProShares Ultra Bloomberg Natural Gas [Member] | Swap Agreements [Member]
|
||
| Significant Accounting Policies [Line Items] | ||
| Investments, fair value disclosure | 0 | 0 |
|
Level II - Other Significant Observable Inputs [Member] | ProShares Ultra Gold [Member] | Forward Agreements [Member]
|
||
| Significant Accounting Policies [Line Items] | ||
| Investments, fair value disclosure | 13,227,915 | (6,812,974) |
|
Level II - Other Significant Observable Inputs [Member] | ProShares Ultra Gold [Member] | Foreign Currency Forward Contracts [Member]
|
||
| Significant Accounting Policies [Line Items] | ||
| Investments, fair value disclosure | 0 | 0 |
|
Level II - Other Significant Observable Inputs [Member] | ProShares Ultra Gold [Member] | Swap Agreements [Member]
|
||
| Significant Accounting Policies [Line Items] | ||
| Investments, fair value disclosure | 0 | 0 |
|
Level II - Other Significant Observable Inputs [Member] | ProShares Ultra Silver [Member] | Forward Agreements [Member]
|
||
| Significant Accounting Policies [Line Items] | ||
| Investments, fair value disclosure | 86,902,211 | (2,492,880) |
|
Level II - Other Significant Observable Inputs [Member] | ProShares Ultra Silver [Member] | Foreign Currency Forward Contracts [Member]
|
||
| Significant Accounting Policies [Line Items] | ||
| Investments, fair value disclosure | 0 | 0 |
|
Level II - Other Significant Observable Inputs [Member] | ProShares Ultra Silver [Member] | Swap Agreements [Member]
|
||
| Significant Accounting Policies [Line Items] | ||
| Investments, fair value disclosure | 0 | 0 |
|
Level II - Other Significant Observable Inputs [Member] | ProShares Ultra Australian Dollar [Member] | Forward Agreements [Member]
|
||
| Significant Accounting Policies [Line Items] | ||
| Investments, fair value disclosure | 0 | 0 |
|
Level II - Other Significant Observable Inputs [Member] | ProShares Ultra Australian Dollar [Member] | Foreign Currency Forward Contracts [Member]
|
||
| Significant Accounting Policies [Line Items] | ||
| Investments, fair value disclosure | 0 | 0 |
|
Level II - Other Significant Observable Inputs [Member] | ProShares Ultra Australian Dollar [Member] | Swap Agreements [Member]
|
||
| Significant Accounting Policies [Line Items] | ||
| Investments, fair value disclosure | 0 | 0 |
|
Level II - Other Significant Observable Inputs [Member] | ProShares Ultra Euro [Member] | Forward Agreements [Member]
|
||
| Significant Accounting Policies [Line Items] | ||
| Investments, fair value disclosure | 0 | 0 |
|
Level II - Other Significant Observable Inputs [Member] | ProShares Ultra Euro [Member] | Foreign Currency Forward Contracts [Member]
|
||
| Significant Accounting Policies [Line Items] | ||
| Investments, fair value disclosure | 30,727 | 100,962 |
|
Level II - Other Significant Observable Inputs [Member] | ProShares Ultra Euro [Member] | Swap Agreements [Member]
|
||
| Significant Accounting Policies [Line Items] | ||
| Investments, fair value disclosure | 0 | 0 |
|
Level II - Other Significant Observable Inputs [Member] | ProShares Ultra Yen [Member] | Forward Agreements [Member]
|
||
| Significant Accounting Policies [Line Items] | ||
| Investments, fair value disclosure | 0 | 0 |
|
Level II - Other Significant Observable Inputs [Member] | ProShares Ultra Yen [Member] | Foreign Currency Forward Contracts [Member]
|
||
| Significant Accounting Policies [Line Items] | ||
| Investments, fair value disclosure | 52,719 | (159,309) |
|
Level II - Other Significant Observable Inputs [Member] | ProShares Ultra Yen [Member] | Swap Agreements [Member]
|
||
| Significant Accounting Policies [Line Items] | ||
| Investments, fair value disclosure | 0 | 0 |
|
Level II - Other Significant Observable Inputs [Member] | ProShares VIX Short-Term Futures ETF [Member] | Forward Agreements [Member]
|
||
| Significant Accounting Policies [Line Items] | ||
| Investments, fair value disclosure | 0 | 0 |
|
Level II - Other Significant Observable Inputs [Member] | ProShares VIX Short-Term Futures ETF [Member] | Foreign Currency Forward Contracts [Member]
|
||
| Significant Accounting Policies [Line Items] | ||
| Investments, fair value disclosure | 0 | 0 |
|
Level II - Other Significant Observable Inputs [Member] | ProShares VIX Short-Term Futures ETF [Member] | Swap Agreements [Member]
|
||
| Significant Accounting Policies [Line Items] | ||
| Investments, fair value disclosure | 0 | 0 |
|
Level II - Other Significant Observable Inputs [Member] | ProShares VIX Mid-Term Futures ETF [Member] | Forward Agreements [Member]
|
||
| Significant Accounting Policies [Line Items] | ||
| Investments, fair value disclosure | 0 | 0 |
|
Level II - Other Significant Observable Inputs [Member] | ProShares VIX Mid-Term Futures ETF [Member] | Foreign Currency Forward Contracts [Member]
|
||
| Significant Accounting Policies [Line Items] | ||
| Investments, fair value disclosure | 0 | 0 |
|
Level II - Other Significant Observable Inputs [Member] | ProShares VIX Mid-Term Futures ETF [Member] | Swap Agreements [Member]
|
||
| Significant Accounting Policies [Line Items] | ||
| Investments, fair value disclosure | 0 | 0 |
|
Level II - Other Significant Observable Inputs [Member] | ProShares Ultra VIX Short-Term Futures ETF [Member] | Forward Agreements [Member]
|
||
| Significant Accounting Policies [Line Items] | ||
| Investments, fair value disclosure | 0 | 0 |
|
Level II - Other Significant Observable Inputs [Member] | ProShares Ultra VIX Short-Term Futures ETF [Member] | Foreign Currency Forward Contracts [Member]
|
||
| Significant Accounting Policies [Line Items] | ||
| Investments, fair value disclosure | 0 | 0 |
|
Level II - Other Significant Observable Inputs [Member] | ProShares Ultra VIX Short-Term Futures ETF [Member] | Swap Agreements [Member]
|
||
| Significant Accounting Policies [Line Items] | ||
| Investments, fair value disclosure | 0 | 0 |
|
Level II - Other Significant Observable Inputs [Member] | ProShares Short VIX Short-Term Futures ETF [Member] | Forward Agreements [Member]
|
||
| Significant Accounting Policies [Line Items] | ||
| Investments, fair value disclosure | 0 | 0 |
|
Level II - Other Significant Observable Inputs [Member] | ProShares Short VIX Short-Term Futures ETF [Member] | Foreign Currency Forward Contracts [Member]
|
||
| Significant Accounting Policies [Line Items] | ||
| Investments, fair value disclosure | 0 | 0 |
|
Level II - Other Significant Observable Inputs [Member] | ProShares Short VIX Short-Term Futures ETF [Member] | Swap Agreements [Member]
|
||
| Significant Accounting Policies [Line Items] | ||
| Investments, fair value disclosure | 0 | 0 |
|
Level II - Other Significant Observable Inputs [Member] | Total Trust [Member] | Forward Agreements [Member]
|
||
| Significant Accounting Policies [Line Items] | ||
| Investments, fair value disclosure | 78,983,405 | (5,900,658) |
|
Level II - Other Significant Observable Inputs [Member] | Total Trust [Member] | Foreign Currency Forward Contracts [Member]
|
||
| Significant Accounting Policies [Line Items] | ||
| Investments, fair value disclosure | (15,151,505) | 15,579,830 |
|
Level II - Other Significant Observable Inputs [Member] | Total Trust [Member] | Swap Agreements [Member]
|
||
| Significant Accounting Policies [Line Items] | ||
| Investments, fair value disclosure | $ (12,034,797) | $ (387,594) |