v2.4.0.8
Schedule of Investments - Short-Term U.S. Government and Agency Obligations (Detail) (USD $)
Jun. 30, 2014
ProShares UltraShort Bloomberg Commodity [Member]
  
Schedule of Investments [Line Items]  
Total short-term U.S. government and Value $ 2,975,627
ProShares UltraShort Bloomberg Commodity [Member] | U.S. Treasury Bills 0.070% Due 08/14/14 [Member]
  
Schedule of Investments [Line Items]  
Principal Amount 877,000 [1]
Total short-term U.S. government and Value 876,973 [1]
ProShares UltraShort Bloomberg Commodity [Member] | U.S. Treasury Bills 0.037% Due 10/23/14 [Member]
  
Schedule of Investments [Line Items]  
Principal Amount 621,000 [1]
Total short-term U.S. government and Value 620,931 [1]
ProShares UltraShort Bloomberg Commodity [Member] | U.S. Treasury Bills 0.036% Due 11/13/14 [Member]
  
Schedule of Investments [Line Items]  
Principal Amount 1,478,000
Total short-term U.S. government and Value 1,477,723
ProShares UltraShort Bloomberg Crude Oil [Member]
  
Schedule of Investments [Line Items]  
Total short-term U.S. government and Value 364,434,603
ProShares UltraShort Bloomberg Crude Oil [Member] | U.S. Treasury Bills 0.037% Due 10/23/14 [Member]
  
Schedule of Investments [Line Items]  
Principal Amount 9,098,000 [1]
Total short-term U.S. government and Value 9,096,992 [1]
ProShares UltraShort Bloomberg Crude Oil [Member] | U.S. Treasury Bills 0.049% Due 07/10/14 [Member]
  
Schedule of Investments [Line Items]  
Principal Amount 76,486,000
Total short-term U.S. government and Value 76,485,904
ProShares UltraShort Bloomberg Crude Oil [Member] | U.S. Treasury Bills 0.044% Due 08/07/14 [Member]
  
Schedule of Investments [Line Items]  
Principal Amount 18,309,000
Total short-term U.S. government and Value 18,308,906
ProShares UltraShort Bloomberg Crude Oil [Member] | U.S. Treasury Bills 0.046% Due 08/14/14 [Member]
  
Schedule of Investments [Line Items]  
Principal Amount 22,530,000 [1]
Total short-term U.S. government and Value 22,529,311 [1]
ProShares UltraShort Bloomberg Crude Oil [Member] | U.S. Treasury Bills 0.044% Due 08/21/14 [Member]
  
Schedule of Investments [Line Items]  
Principal Amount 28,258,000 [1]
Total short-term U.S. government and Value 28,256,999 [1]
ProShares UltraShort Bloomberg Crude Oil [Member] | U.S. Treasury Bills 0.032% Due 08/28/14 [Member]
  
Schedule of Investments [Line Items]  
Principal Amount 19,252,000 [1]
Total short-term U.S. government and Value 19,251,380 [1]
ProShares UltraShort Bloomberg Crude Oil [Member] | U.S. Treasury Bills 0.040% Due 09/04/14 [Member]
  
Schedule of Investments [Line Items]  
Principal Amount 4,232,000 [1]
Total short-term U.S. government and Value 4,231,847 [1]
ProShares UltraShort Bloomberg Crude Oil [Member] | U.S. Treasury Bills 0.036% Due 09/11/14 [Member]
  
Schedule of Investments [Line Items]  
Principal Amount 15,756,000 [1]
Total short-term U.S. government and Value 15,755,370 [1]
ProShares UltraShort Bloomberg Crude Oil [Member] | U.S. Treasury Bills 0.034% Due 09/18/14 [Member]
  
Schedule of Investments [Line Items]  
Principal Amount 53,342,000 [1]
Total short-term U.S. government and Value 53,339,659 [1]
ProShares UltraShort Bloomberg Crude Oil [Member] | U.S. Treasury Bills 0.027% Due 09/25/14 [Member]
  
Schedule of Investments [Line Items]  
Principal Amount 18,805,000 [1]
Total short-term U.S. government and Value 18,803,652 [1]
ProShares UltraShort Bloomberg Crude Oil [Member] | U.S. Treasury Bills 0.036% Due 11/06/14 [Member]
  
Schedule of Investments [Line Items]  
Principal Amount 4,569,000
Total short-term U.S. government and Value 4,568,269
ProShares UltraShort Bloomberg Crude Oil [Member] | U.S. Treasury Bills 0.046% Due 11/13/14 [Member]
  
Schedule of Investments [Line Items]  
Principal Amount 3,000,000
Total short-term U.S. government and Value 2,999,438
ProShares UltraShort Bloomberg Crude Oil [Member] | U.S. Treasury Bills 0.045% Due 11/20/14 [Member]
  
Schedule of Investments [Line Items]  
Principal Amount 15,026,000 [1]
Total short-term U.S. government and Value 15,023,037 [1]
ProShares UltraShort Bloomberg Crude Oil [Member] | U.S. Treasury Bills 0.042% Due 12/11/14 [Member]
  
Schedule of Investments [Line Items]  
Principal Amount 75,801,000 [1]
Total short-term U.S. government and Value 75,783,839 [1]
ProShares UltraShort Bloomberg Natural Gas [Member]
  
Schedule of Investments [Line Items]  
Total short-term U.S. government and Value 44,127,812
ProShares UltraShort Bloomberg Natural Gas [Member] | U.S. Treasury Bills 0.027% Due 09/25/14 [Member]
  
Schedule of Investments [Line Items]  
Principal Amount 2,701,000
Total short-term U.S. government and Value 2,700,806
ProShares UltraShort Bloomberg Natural Gas [Member] | U.S. Treasury Bills 0.050% Due 07/10/14 [Member]
  
Schedule of Investments [Line Items]  
Principal Amount 1,172,000
Total short-term U.S. government and Value 1,171,999
ProShares UltraShort Bloomberg Natural Gas [Member] | U.S. Treasury Bills 0.042% Due 08/07/14 [Member]
  
Schedule of Investments [Line Items]  
Principal Amount 4,569,000
Total short-term U.S. government and Value 4,568,977
ProShares UltraShort Bloomberg Natural Gas [Member] | U.S. Treasury Bills 0.035% Due 08/14/14 [Member]
  
Schedule of Investments [Line Items]  
Principal Amount 229,000
Total short-term U.S. government and Value 228,993
ProShares UltraShort Bloomberg Natural Gas [Member] | U.S. Treasury Bills 0.063% Due 08/21/14 [Member]
  
Schedule of Investments [Line Items]  
Principal Amount 7,980,000
Total short-term U.S. government and Value 7,979,717
ProShares UltraShort Bloomberg Natural Gas [Member] | U.S. Treasury Bills 0.035% Due 09/11/14 [Member]
  
Schedule of Investments [Line Items]  
Principal Amount 2,581,000
Total short-term U.S. government and Value 2,580,897
ProShares UltraShort Bloomberg Natural Gas [Member] | U.S. Treasury Bills 0.026% Due 09/18/14 [Member]
  
Schedule of Investments [Line Items]  
Principal Amount 469,000
Total short-term U.S. government and Value 468,979
ProShares UltraShort Bloomberg Natural Gas [Member] | U.S. Treasury Bills 0.035% Due 10/23/14 [Member]
  
Schedule of Investments [Line Items]  
Principal Amount 830,000
Total short-term U.S. government and Value 829,908
ProShares UltraShort Bloomberg Natural Gas [Member] | U.S. Treasury Bills 0.038% Due 11/06/14 [Member]
  
Schedule of Investments [Line Items]  
Principal Amount 4,748,000
Total short-term U.S. government and Value 4,747,240
ProShares UltraShort Bloomberg Natural Gas [Member] | U.S. Treasury Bills 0.033% Due 11/13/14 [Member]
  
Schedule of Investments [Line Items]  
Principal Amount 10,387,000
Total short-term U.S. government and Value 10,385,053
ProShares UltraShort Bloomberg Natural Gas [Member] | U.S. Treasury Bills 0.045% Due 11/20/14 [Member]
  
Schedule of Investments [Line Items]  
Principal Amount 5,495,000
Total short-term U.S. government and Value 5,493,916
ProShares UltraShort Bloomberg Natural Gas [Member] | U.S. Treasury Bills 0.034% Due 12/11/14 [Member]
  
Schedule of Investments [Line Items]  
Principal Amount 2,972,000
Total short-term U.S. government and Value 2,971,327
ProShares UltraShort Gold [Member]
  
Schedule of Investments [Line Items]  
Total short-term U.S. government and Value 94,201,223
ProShares UltraShort Gold [Member] | U.S. Treasury Bills 0.070% Due 08/14/14 [Member]
  
Schedule of Investments [Line Items]  
Principal Amount 4,275,000 [2]
Total short-term U.S. government and Value 4,274,869 [2]
ProShares UltraShort Gold [Member] | U.S. Treasury Bills 0.045% Due 11/20/14 [Member]
  
Schedule of Investments [Line Items]  
Principal Amount 3,050,000 [2]
Total short-term U.S. government and Value 3,049,398 [2]
ProShares UltraShort Gold [Member] | U.S. Treasury Bills 0.057% Due 08/07/14 [Member]
  
Schedule of Investments [Line Items]  
Principal Amount 39,342,000 [2]
Total short-term U.S. government and Value 39,341,798 [2]
ProShares UltraShort Gold [Member] | U.S. Treasury Bills 0.039% Due 08/21/14 [Member]
  
Schedule of Investments [Line Items]  
Principal Amount 2,326,000 [2]
Total short-term U.S. government and Value 2,325,918 [2]
ProShares UltraShort Gold [Member] | U.S. Treasury Bills 0.039% Due 08/28/14 [Member]
  
Schedule of Investments [Line Items]  
Principal Amount 2,841,000 [2]
Total short-term U.S. government and Value 2,840,908 [2]
ProShares UltraShort Gold [Member] | U.S. Treasury Bills 0.032% Due 09/04/14 [Member]
  
Schedule of Investments [Line Items]  
Principal Amount 20,661,000
Total short-term U.S. government and Value 20,660,254
ProShares UltraShort Gold [Member] | U.S. Treasury Bills 0.025% Due 09/18/14 [Member]
  
Schedule of Investments [Line Items]  
Principal Amount 14,956,000 [2]
Total short-term U.S. government and Value 14,955,344 [2]
ProShares UltraShort Gold [Member] | U.S. Treasury Bills 0.037% Due 11/13/14 [Member]
  
Schedule of Investments [Line Items]  
Principal Amount 6,754,000 [2]
Total short-term U.S. government and Value 6,752,734 [2]
ProShares UltraShort Silver [Member]
  
Schedule of Investments [Line Items]  
Total short-term U.S. government and Value 62,535,124
ProShares UltraShort Silver [Member] | U.S. Treasury Bills 0.070% Due 08/14/14 [Member]
  
Schedule of Investments [Line Items]  
Principal Amount 7,040,000 [2]
Total short-term U.S. government and Value 7,039,785 [2]
ProShares UltraShort Silver [Member] | U.S. Treasury Bills 0.037% Due 10/23/14 [Member]
  
Schedule of Investments [Line Items]  
Principal Amount 127,000
Total short-term U.S. government and Value 126,986
ProShares UltraShort Silver [Member] | U.S. Treasury Bills 0.045% Due 11/20/14 [Member]
  
Schedule of Investments [Line Items]  
Principal Amount 4,575,000 [2]
Total short-term U.S. government and Value 4,574,098 [2]
ProShares UltraShort Silver [Member] | U.S. Treasury Bills 0.057% Due 08/07/14 [Member]
  
Schedule of Investments [Line Items]  
Principal Amount 3,351,000
Total short-term U.S. government and Value 3,350,983
ProShares UltraShort Silver [Member] | U.S. Treasury Bills 0.073% Due 08/21/14 [Member]
  
Schedule of Investments [Line Items]  
Principal Amount 6,784,000 [2]
Total short-term U.S. government and Value 6,783,760 [2]
ProShares UltraShort Silver [Member] | U.S. Treasury Bills 0.033% Due 08/28/14 [Member]
  
Schedule of Investments [Line Items]  
Principal Amount 13,337,000 [2]
Total short-term U.S. government and Value 13,336,570 [2]
ProShares UltraShort Silver [Member] | U.S. Treasury Bills 0.029% Due 09/11/14 [Member]
  
Schedule of Investments [Line Items]  
Principal Amount 6,014,000 [2]
Total short-term U.S. government and Value 6,013,759 [2]
ProShares UltraShort Silver [Member] | U.S. Treasury Bills 0.039% Due 11/06/14 [Member]
  
Schedule of Investments [Line Items]  
Principal Amount 125,000
Total short-term U.S. government and Value 124,980
ProShares UltraShort Silver [Member] | U.S Treasury Bills 0.052% Due 12/11/14 [Member]
  
Schedule of Investments [Line Items]  
Principal Amount 21,189,000 [2]
Total short-term U.S. government and Value 21,184,203 [2]
ProShares Short Euro [Member]
  
Schedule of Investments [Line Items]  
Total short-term U.S. government and Value 12,790,157
ProShares Short Euro [Member] | U.S. Treasury Bills 0.036% Due 11/13/14 [Member]
  
Schedule of Investments [Line Items]  
Principal Amount 371,000
Total short-term U.S. government and Value 370,930
ProShares Short Euro [Member] | U.S. Treasury Bills 0.045% Due 11/20/14 [Member]
  
Schedule of Investments [Line Items]  
Principal Amount 1,799,000
Total short-term U.S. government and Value 1,798,645
ProShares Short Euro [Member] | U.S. Treasury Bills 0.039% Due 11/06/14 [Member]
  
Schedule of Investments [Line Items]  
Principal Amount 103,000
Total short-term U.S. government and Value 102,984
ProShares Short Euro [Member] | U.S. Treasury Bills 0.071% Due 08/21/14 [Member]
  
Schedule of Investments [Line Items]  
Principal Amount 2,789,000
Total short-term U.S. government and Value 2,788,901
ProShares Short Euro [Member] | U.S. Treasury Bills 0.031% Due 09/04/14 [Member]
  
Schedule of Investments [Line Items]  
Principal Amount 1,566,000
Total short-term U.S. government and Value 1,565,943
ProShares Short Euro [Member] | U.S. Treasury Bills 0.034% Due 09/11/14 [Member]
  
Schedule of Investments [Line Items]  
Principal Amount 6,163,000
Total short-term U.S. government and Value 6,162,754
ProShares UltraShort Australian Dollar [Member]
  
Schedule of Investments [Line Items]  
Total short-term U.S. government and Value 17,768,429
ProShares UltraShort Australian Dollar [Member] | U.S. Treasury Bills 0.027% Due 09/25/14 [Member]
  
Schedule of Investments [Line Items]  
Principal Amount 9,120,000
Total short-term U.S. government and Value 9,119,346
ProShares UltraShort Australian Dollar [Member] | U.S. Treasury Bills 0.035% Due 10/23/14 [Member]
  
Schedule of Investments [Line Items]  
Principal Amount 2,907,000
Total short-term U.S. government and Value 2,906,678
ProShares UltraShort Australian Dollar [Member] | U.S. Treasury Bills 0.029% Due 09/11/14 [Member]
  
Schedule of Investments [Line Items]  
Principal Amount 3,781,000
Total short-term U.S. government and Value 3,780,849
ProShares UltraShort Australian Dollar [Member] | U.S. Treasury Bills 0.048% Due 12/11/14 [Member]
  
Schedule of Investments [Line Items]  
Principal Amount 1,962,000
Total short-term U.S. government and Value 1,961,556
ProShares UltraShort Euro [Member]
  
Schedule of Investments [Line Items]  
Total short-term U.S. government and Value 445,869,168
ProShares UltraShort Euro [Member] | U.S. Treasury Bills 0.027% Due 09/25/14 [Member]
  
Schedule of Investments [Line Items]  
Principal Amount 13,825,000 [3]
Total short-term U.S. government and Value 13,824,009 [3]
ProShares UltraShort Euro [Member] | U.S. Treasury Bills 0.050% Due 07/10/14 [Member]
  
Schedule of Investments [Line Items]  
Principal Amount 32,975,000 [3]
Total short-term U.S. government and Value 32,974,959 [3]
ProShares UltraShort Euro [Member] | U.S. Treasury Bills 0.035% Due 10/23/14 [Member]
  
Schedule of Investments [Line Items]  
Principal Amount 76,513,000 [3]
Total short-term U.S. government and Value 76,504,520 [3]
ProShares UltraShort Euro [Member] | U.S. Treasury Bills 0.066% Due 08/07/14 [Member]
  
Schedule of Investments [Line Items]  
Principal Amount 7,838,000
Total short-term U.S. government and Value 7,837,960
ProShares UltraShort Euro [Member] | U.S. Treasury Bills 0.061% Due 08/14/14 [Member]
  
Schedule of Investments [Line Items]  
Principal Amount 95,984,000
Total short-term U.S. government and Value 95,981,067
ProShares UltraShort Euro [Member] | U.S. Treasury Bills 0.060% Due 08/21/14 [Member]
  
Schedule of Investments [Line Items]  
Principal Amount 124,055,000 [3]
Total short-term U.S. government and Value 124,050,606 [3]
ProShares UltraShort Euro [Member] | U.S. Treasury Bills 0.024% Due 08/28/14 [Member]
  
Schedule of Investments [Line Items]  
Principal Amount 31,584,000
Total short-term U.S. government and Value 31,582,982
ProShares UltraShort Euro [Member] | U.S. Treasury Bills 0.029% Due 10/09/14 [Member]
  
Schedule of Investments [Line Items]  
Principal Amount 55,284,000 [3]
Total short-term U.S. government and Value 55,279,393 [3]
ProShares UltraShort Euro [Member] | U.S. Treasury Bills 0.037% Due 11/06/14 [Member]
  
Schedule of Investments [Line Items]  
Principal Amount 5,118,000 [3]
Total short-term U.S. government and Value 5,117,181 [3]
ProShares UltraShort Euro [Member] | U.S. Treasury Bills 0.040% Due 11/13/14 [Member]
  
Schedule of Investments [Line Items]  
Principal Amount 2,717,000 [3]
Total short-term U.S. government and Value 2,716,491 [3]
ProShares UltraShort Yen [Member]
  
Schedule of Investments [Line Items]  
Total short-term U.S. government and Value 363,176,364
ProShares UltraShort Yen [Member] | U.S. Treasury Bills 0.027% Due 09/25/14 [Member]
  
Schedule of Investments [Line Items]  
Principal Amount 39,963,000 [3]
Total short-term U.S. government and Value 39,960,136 [3]
ProShares UltraShort Yen [Member] | U.S. Treasury Bills 0.050% Due 07/10/14 [Member]
  
Schedule of Investments [Line Items]  
Principal Amount 15,472,000 [3]
Total short-term U.S. government and Value 15,471,981 [3]
ProShares UltraShort Yen [Member] | U.S. Treasury Bills 0.045% Due 11/20/14 [Member]
  
Schedule of Investments [Line Items]  
Principal Amount 56,683,000 [3]
Total short-term U.S. government and Value 56,671,821 [3]
ProShares UltraShort Yen [Member] | U.S. Treasury Bills 0.057% Due 08/07/14 [Member]
  
Schedule of Investments [Line Items]  
Principal Amount 8,521,000 [3]
Total short-term U.S. government and Value 8,520,956 [3]
ProShares UltraShort Yen [Member] | U.S. Treasury Bills 0.031% Due 09/04/14 [Member]
  
Schedule of Investments [Line Items]  
Principal Amount 77,259,000
Total short-term U.S. government and Value 77,256,210
ProShares UltraShort Yen [Member] | U.S. Treasury Bills 0.029% Due 10/09/14 [Member]
  
Schedule of Investments [Line Items]  
Principal Amount 10,101,000 [3]
Total short-term U.S. government and Value 10,100,158 [3]
ProShares UltraShort Yen [Member] | U.S. Treasury Bills 0.044% Due 08/28/14 [Member]
  
Schedule of Investments [Line Items]  
Principal Amount 15,702,000 [3]
Total short-term U.S. government and Value 15,701,494 [3]
ProShares UltraShort Yen [Member] | U.S. Treasury Bills 0.028% Due 09/18/14 [Member]
  
Schedule of Investments [Line Items]  
Principal Amount 41,808,000 [3]
Total short-term U.S. government and Value 41,806,165 [3]
ProShares UltraShort Yen [Member] | U.S. Treasury Bills 0.048% Due 11/06/14 [Member]
  
Schedule of Investments [Line Items]  
Principal Amount 2,720,000
Total short-term U.S. government and Value 2,719,565
ProShares UltraShort Yen [Member] | U.S. Treasury Bills 0.045% Due 11/13/14 [Member]
  
Schedule of Investments [Line Items]  
Principal Amount 9,846,000 [3]
Total short-term U.S. government and Value 9,844,154 [3]
ProShares UltraShort Yen [Member] | U.S. Treasury Bills 0.030% Due 12/11/14 [Member]
  
Schedule of Investments [Line Items]  
Principal Amount 85,143,000 [3]
Total short-term U.S. government and Value 85,123,724 [3]
ProShares Ultra Bloomberg Commodity [Member]
  
Schedule of Investments [Line Items]  
Total short-term U.S. government and Value 3,166,730
ProShares Ultra Bloomberg Commodity [Member] | U.S. Treasury Bills 0.036% Due 11/13/14 [Member]
  
Schedule of Investments [Line Items]  
Principal Amount 1,003,000 [1]
Total short-term U.S. government and Value 1,002,812 [1]
ProShares Ultra Bloomberg Commodity [Member] | U.S. Treasury Bills 0.031% Due 09/04/14 [Member]
  
Schedule of Investments [Line Items]  
Principal Amount 1,163,000
Total short-term U.S. government and Value 1,162,958
ProShares Ultra Bloomberg Commodity [Member] | U.S. Treasury Bills 0.041% Due 09/11/14 [Member]
  
Schedule of Investments [Line Items]  
Principal Amount 1,001,000 [1]
Total short-term U.S. government and Value 1,000,960 [1]
ProShares Ultra Bloomberg Crude Oil [Member]
  
Schedule of Investments [Line Items]  
Total short-term U.S. government and Value 92,959,952
ProShares Ultra Bloomberg Crude Oil [Member] | U.S. Treasury Bills 0.049% Due 07/10/14 [Member]
  
Schedule of Investments [Line Items]  
Principal Amount 15,048,000 [1]
Total short-term U.S. government and Value 15,047,981 [1]
ProShares Ultra Bloomberg Crude Oil [Member] | U.S. Treasury Bills 0.040% Due 09/04/14 [Member]
  
Schedule of Investments [Line Items]  
Principal Amount 1,264,000 [1]
Total short-term U.S. government and Value 1,263,954 [1]
ProShares Ultra Bloomberg Crude Oil [Member] | U.S. Treasury Bills 0.036% Due 11/06/14 [Member]
  
Schedule of Investments [Line Items]  
Principal Amount 10,986,000 [1]
Total short-term U.S. government and Value 10,984,242 [1]
ProShares Ultra Bloomberg Crude Oil [Member] | U.S. Treasury Bills 0.045% Due 11/20/14 [Member]
  
Schedule of Investments [Line Items]  
Principal Amount 2,554,000 [1]
Total short-term U.S. government and Value 2,553,496 [1]
ProShares Ultra Bloomberg Crude Oil [Member] | U.S. Treasury Bills 0.025% Due 09/18/14 [Member]
  
Schedule of Investments [Line Items]  
Principal Amount 10,057,000 [1]
Total short-term U.S. government and Value 10,056,559 [1]
ProShares Ultra Bloomberg Crude Oil [Member] | U.S. Treasury Bills 0.048% Due 12/11/14 [Member]
  
Schedule of Investments [Line Items]  
Principal Amount 11,818,000 [1]
Total short-term U.S. government and Value 11,815,325 [1]
ProShares Ultra Bloomberg Crude Oil [Member] | U.S. Treasury Bills 0.060% Due 08/07/14 [Member]
  
Schedule of Investments [Line Items]  
Principal Amount 2,380,000 [1]
Total short-term U.S. government and Value 2,379,988 [1]
ProShares Ultra Bloomberg Crude Oil [Member] | U.S. Treasury Bills 0.067% Due 08/21/14 [Member]
  
Schedule of Investments [Line Items]  
Principal Amount 5,483,000 [1]
Total short-term U.S. government and Value 5,482,806 [1]
ProShares Ultra Bloomberg Crude Oil [Member] | U.S. Treasury Bills 0.070% Due 08/28/14 [Member]
  
Schedule of Investments [Line Items]  
Principal Amount 17,224,000 [1]
Total short-term U.S. government and Value 17,223,445 [1]
ProShares Ultra Bloomberg Crude Oil [Member] | U.S. Treasury Bills 0.026% Due 09/11/14 [Member]
  
Schedule of Investments [Line Items]  
Principal Amount 13,366,000 [1]
Total short-term U.S. government and Value 13,365,465 [1]
ProShares Ultra Bloomberg Crude Oil [Member] | U.S. Treasury Bills 0.031% Due 10/23/14 [Member]
  
Schedule of Investments [Line Items]  
Principal Amount 2,787,000
Total short-term U.S. government and Value 2,786,691
ProShares Ultra Bloomberg Natural Gas [Member]
  
Schedule of Investments [Line Items]  
Total short-term U.S. government and Value 15,519,463
ProShares Ultra Bloomberg Natural Gas [Member] | U.S. Treasury Bills 0.040% Due 09/04/14 [Member]
  
Schedule of Investments [Line Items]  
Principal Amount 171,000
Total short-term U.S. government and Value 170,994
ProShares Ultra Bloomberg Natural Gas [Member] | U.S. Treasury Bills 0.035% Due 09/11/14 [Member]
  
Schedule of Investments [Line Items]  
Principal Amount 2,118,000
Total short-term U.S. government and Value 2,117,915
ProShares Ultra Bloomberg Natural Gas [Member] | U.S. Treasury Bills 0.057% Due 08/07/14 [Member]
  
Schedule of Investments [Line Items]  
Principal Amount 217,000
Total short-term U.S. government and Value 216,999
ProShares Ultra Bloomberg Natural Gas [Member] | U.S. Treasury Bills 0.039% Due 08/28/14 [Member]
  
Schedule of Investments [Line Items]  
Principal Amount 996,000
Total short-term U.S. government and Value 995,968
ProShares Ultra Bloomberg Natural Gas [Member] | U.S Treasury Bills 0.048% Due 07/10/14 [Member]
  
Schedule of Investments [Line Items]  
Principal Amount 1,580,000
Total short-term U.S. government and Value 1,579,998
ProShares Ultra Bloomberg Natural Gas [Member] | U.S. Treasury Bills 0.073% Due 08/14/14 [Member]
  
Schedule of Investments [Line Items]  
Principal Amount 481,000
Total short-term U.S. government and Value 480,985
ProShares Ultra Bloomberg Natural Gas [Member] | U.S. Treasury Bills 0.036% Due 10/23/14 [Member]
  
Schedule of Investments [Line Items]  
Principal Amount 4,012,000
Total short-term U.S. government and Value 4,011,555
ProShares Ultra Bloomberg Natural Gas [Member] | U.S. Treasury Bills 0.040% Due 11/06/14 [Member]
  
Schedule of Investments [Line Items]  
Principal Amount 5,946,000
Total short-term U.S. government and Value 5,945,049
ProShares Ultra Gold [Member]
  
Schedule of Investments [Line Items]  
Total short-term U.S. government and Value 122,192,435
ProShares Ultra Gold [Member] | U.S. Treasury Bills 0.027% Due 09/25/14 [Member]
  
Schedule of Investments [Line Items]  
Principal Amount 13,205,000 [2]
Total short-term U.S. government and Value 13,204,054 [2]
ProShares Ultra Gold [Member] | U.S. Treasury Bills 0.035% Due 10/23/14 [Member]
  
Schedule of Investments [Line Items]  
Principal Amount 1,253,000 [2]
Total short-term U.S. government and Value 1,252,861 [2]
ProShares Ultra Gold [Member] | U.S. Treasury Bills 0.057% Due 08/07/14 [Member]
  
Schedule of Investments [Line Items]  
Principal Amount 31,324,000 [2]
Total short-term U.S. government and Value 31,323,839 [2]
ProShares Ultra Gold [Member] | U.S. Treasury Bills 0.031% Due 09/04/14 [Member]
  
Schedule of Investments [Line Items]  
Principal Amount 7,389,000
Total short-term U.S. government and Value 7,388,733
ProShares Ultra Gold [Member] | U.S. Treasury Bills 0.070% Due 08/28/14 [Member]
  
Schedule of Investments [Line Items]  
Principal Amount 19,094,000 [2]
Total short-term U.S. government and Value 19,093,385 [2]
ProShares Ultra Gold [Member] | U.S. Treasury Bills 0.038% Due 09/18/14 [Member]
  
Schedule of Investments [Line Items]  
Principal Amount 10,239,000 [2]
Total short-term U.S. government and Value 10,238,551 [2]
ProShares Ultra Gold [Member] | U.S. Treasury Bills 0.046% Due 12/11/14 [Member]
  
Schedule of Investments [Line Items]  
Principal Amount 39,700,000 [2]
Total short-term U.S. government and Value 39,691,012 [2]
ProShares Short VIX Short-Term Futures ETF [Member]
  
Schedule of Investments [Line Items]  
Total short-term U.S. government and Value 150,294,400
ProShares Short VIX Short-Term Futures ETF [Member] | U.S. Treasury Bills 0.027% Due 09/25/14 [Member]
  
Schedule of Investments [Line Items]  
Principal Amount 11,065,000
Total short-term U.S. government and Value 11,064,207
ProShares Short VIX Short-Term Futures ETF [Member] | U.S. Treasury Bills 0.050% Due 07/10/14 [Member]
  
Schedule of Investments [Line Items]  
Principal Amount 22,266,000
Total short-term U.S. government and Value 22,265,972
ProShares Short VIX Short-Term Futures ETF [Member] | U.S. Treasury Bills 0.035% Due 09/11/14 [Member]
  
Schedule of Investments [Line Items]  
Principal Amount 8,614,000
Total short-term U.S. government and Value 8,613,656
ProShares Short VIX Short-Term Futures ETF [Member] | U.S. Treasury Bills 0.045% Due 11/20/14 [Member]
  
Schedule of Investments [Line Items]  
Principal Amount 2,661,000
Total short-term U.S. government and Value 2,660,475
ProShares Short VIX Short-Term Futures ETF [Member] | U.S. Treasury Bills 0.029% Due 10/09/14 [Member]
  
Schedule of Investments [Line Items]  
Principal Amount 11,453,000
Total short-term U.S. government and Value 11,452,046
ProShares Short VIX Short-Term Futures ETF [Member] | US Treasury Bills 0.040% Due 08/07/2014 [Member]
  
Schedule of Investments [Line Items]  
Principal Amount 5,409,000
Total short-term U.S. government and Value 5,408,972
ProShares Short VIX Short-Term Futures ETF [Member] | U.S. Treasury Bills 0.068% Due 08/14/14 [Member]
  
Schedule of Investments [Line Items]  
Principal Amount 1,688,000
Total short-term U.S. government and Value 1,687,948
ProShares Short VIX Short-Term Futures ETF [Member] | US Treasury Bills 0.035% Due 08/21/2014 [Member]
  
Schedule of Investments [Line Items]  
Principal Amount 2,137,000
Total short-term U.S. government and Value 2,136,924
ProShares Short VIX Short-Term Futures ETF [Member] | US Treasury Bills 0.034% Due 08/28/2014 [Member]
  
Schedule of Investments [Line Items]  
Principal Amount 14,969,000
Total short-term U.S. government and Value 14,968,518
ProShares Short VIX Short-Term Futures ETF [Member] | U.S. Treasury Bills 0.029% Due 09/18/2014 [Member]
  
Schedule of Investments [Line Items]  
Principal Amount 11,386,000
Total short-term U.S. government and Value 11,385,500
ProShares Short VIX Short-Term Futures ETF [Member] | U.S. Treasury Bills 0.030% due 10/23/14 [Member]
  
Schedule of Investments [Line Items]  
Principal Amount 4,340,000
Total short-term U.S. government and Value 4,339,519
ProShares Short VIX Short-Term Futures ETF [Member] | U.S. Treasury Bills 0.035% due 11/06/14 [Member]
  
Schedule of Investments [Line Items]  
Principal Amount 13,772,000
Total short-term U.S. government and Value 13,769,797
ProShares Short VIX Short-Term Futures ETF [Member] | U.S. Treasury Bills 0.026% Due 11/13/14 [Member]
  
Schedule of Investments [Line Items]  
Principal Amount 1,188,000
Total short-term U.S. government and Value 1,187,777
ProShares Short VIX Short-Term Futures ETF [Member] | U.S. Treasury Bills 0.049% Due 12/11/14 [Member]
  
Schedule of Investments [Line Items]  
Principal Amount 39,362,000
Total short-term U.S. government and Value 39,353,089
ProShares Ultra VIX Short-Term Futures ETF [Member]
  
Schedule of Investments [Line Items]  
Total short-term U.S. government and Value 177,916,427
ProShares Ultra VIX Short-Term Futures ETF [Member] | U.S. Treasury Bills 0.037% Due 10/23/14 [Member]
  
Schedule of Investments [Line Items]  
Principal Amount 57,402,000
Total short-term U.S. government and Value 57,395,638
ProShares Ultra VIX Short-Term Futures ETF [Member] | U.S. Treasury Bills 0.046% Due 11/13/14 [Member]
  
Schedule of Investments [Line Items]  
Principal Amount 10,000,000
Total short-term U.S. government and Value 9,998,125
ProShares Ultra VIX Short-Term Futures ETF [Member] | U.S. Treasury Bills 0.035% Due 08/14/14 [Member]
  
Schedule of Investments [Line Items]  
Principal Amount 8,052,000
Total short-term U.S. government and Value 8,051,754
ProShares Ultra VIX Short-Term Futures ETF [Member] | U.S. Treasury Bills 0.035% Due 09/11/14 [Member]
  
Schedule of Investments [Line Items]  
Principal Amount 10,068,000
Total short-term U.S. government and Value 10,067,597
ProShares Ultra VIX Short-Term Futures ETF [Member] | U.S. Treasury Bills 0.045% Due 11/20/14 [Member]
  
Schedule of Investments [Line Items]  
Principal Amount 3,277,000
Total short-term U.S. government and Value 3,276,354
ProShares Ultra VIX Short-Term Futures ETF [Member] | U.S. Treasury Bills 0.039% Due 08/21/14 [Member]
  
Schedule of Investments [Line Items]  
Principal Amount 3,169,000
Total short-term U.S. government and Value 3,168,888
ProShares Ultra VIX Short-Term Futures ETF [Member] | U.S. Treasury Bills 0.048% Due 11/06/14 [Member]
  
Schedule of Investments [Line Items]  
Principal Amount 6,852,000
Total short-term U.S. government and Value 6,850,904
ProShares Ultra VIX Short-Term Futures ETF [Member] | U.S. Treasury Bills 0.030% Due 12/11/14 [Member]
  
Schedule of Investments [Line Items]  
Principal Amount 32,272,000
Total short-term U.S. government and Value 32,264,694
ProShares Ultra VIX Short-Term Futures ETF [Member] | U.S. Treasury Bills 0.053% due 08/07/14 [Member]
  
Schedule of Investments [Line Items]  
Principal Amount 4,094,000
Total short-term U.S. government and Value 4,093,979
ProShares Ultra VIX Short-Term Futures ETF [Member] | U.S. Treasury Bills 0.030% due 08/28/14 [Member]
  
Schedule of Investments [Line Items]  
Principal Amount 2,887,000
Total short-term U.S. government and Value 2,886,907
ProShares Ultra VIX Short-Term Futures ETF [Member] | U.S Treasury Bills 0.039% Due 09/04/14 [Member]
  
Schedule of Investments [Line Items]  
Principal Amount 25,051,000
Total short-term U.S. government and Value 25,050,095
ProShares Ultra VIX Short-Term Futures ETF [Member] | U.S Treasury Bills 0.037% Due 09/18/14 [Member]
  
Schedule of Investments [Line Items]  
Principal Amount 4,193,000
Total short-term U.S. government and Value 4,192,816
ProShares Ultra VIX Short-Term Futures ETF [Member] | U.S Treasury Bills 0.026% Due 09/25/14 [Member]
  
Schedule of Investments [Line Items]  
Principal Amount 6,620,000
Total short-term U.S. government and Value 6,619,525
ProShares Ultra VIX Short-Term Futures ETF [Member] | U.S Treasury Bills 0.033% Due 01/08/15 [Member]
  
Schedule of Investments [Line Items]  
Principal Amount 4,000,000
Total short-term U.S. government and Value 3,999,151
ProShares VIX Mid-Term Futures ETF [Member]
  
Schedule of Investments [Line Items]  
Total short-term U.S. government and Value 34,381,263
ProShares VIX Mid-Term Futures ETF [Member] | U.S. Treasury Bills 0.036% Due 11/13/14 [Member]
  
Schedule of Investments [Line Items]  
Principal Amount 166,000
Total short-term U.S. government and Value 165,969
ProShares VIX Mid-Term Futures ETF [Member] | U.S. Treasury Bills 0.027% Due 09/25/14 [Member]
  
Schedule of Investments [Line Items]  
Principal Amount 961,000
Total short-term U.S. government and Value 960,931
ProShares VIX Mid-Term Futures ETF [Member] | U.S. Treasury Bills 0.050% Due 07/10/14 [Member]
  
Schedule of Investments [Line Items]  
Principal Amount 18,548,000
Total short-term U.S. government and Value 18,547,977
ProShares VIX Mid-Term Futures ETF [Member] | U.S. Treasury Bills 0.045% Due 11/20/14 [Member]
  
Schedule of Investments [Line Items]  
Principal Amount 1,882,000
Total short-term U.S. government and Value 1,881,629
ProShares VIX Mid-Term Futures ETF [Member] | U.S. Treasury Bills 0.034% Due 12/11/14 [Member]
  
Schedule of Investments [Line Items]  
Principal Amount 2,972,000
Total short-term U.S. government and Value 2,971,327
ProShares VIX Mid-Term Futures ETF [Member] | U.S. Treasury Bills 0.057% Due 08/07/14 [Member]
  
Schedule of Investments [Line Items]  
Principal Amount 1,355,000
Total short-term U.S. government and Value 1,354,993
ProShares VIX Mid-Term Futures ETF [Member] | U.S. Treasury Bills 0.039% Due 08/28/14 [Member]
  
Schedule of Investments [Line Items]  
Principal Amount 162,000
Total short-term U.S. government and Value 161,995
ProShares VIX Mid-Term Futures ETF [Member] | U.S. Treasury Bills 0.031% Due 09/04/14 [Member]
  
Schedule of Investments [Line Items]  
Principal Amount 1,182,000
Total short-term U.S. government and Value 1,181,957
ProShares VIX Mid-Term Futures ETF [Member] | U.S. Treasury Bills 0.029% Due 10/09/14 [Member]
  
Schedule of Investments [Line Items]  
Principal Amount 1,939,000
Total short-term U.S. government and Value 1,938,838
ProShares VIX Mid-Term Futures ETF [Member] | U.S. Treasury Bills 0.067% Due 08/21/14 [Member]
  
Schedule of Investments [Line Items]  
Principal Amount 2,464,000
Total short-term U.S. government and Value 2,463,913
ProShares VIX Mid-Term Futures ETF [Member] | U.S. Treasury Bills 0.036% Due 10/23/14 [Member]
  
Schedule of Investments [Line Items]  
Principal Amount 2,232,000
Total short-term U.S. government and Value 2,231,752
ProShares VIX Mid-Term Futures ETF [Member] | U.S. Treasury Bills 0.068% Due 08/14/14 [Member]
  
Schedule of Investments [Line Items]  
Principal Amount 236,000
Total short-term U.S. government and Value 235,993
ProShares VIX Mid-Term Futures ETF [Member] | U.S. Treasury Bills 0.038% Due 09/11/14 [Member]
  
Schedule of Investments [Line Items]  
Principal Amount 284,000
Total short-term U.S. government and Value 283,989
ProShares Ultra Silver [Member]
  
Schedule of Investments [Line Items]  
Total short-term U.S. government and Value 424,515,400
ProShares Ultra Silver [Member] | U.S. Treasury Bills 0.070% Due 08/14/14 [Member]
  
Schedule of Investments [Line Items]  
Principal Amount 5,875,000 [2]
Total short-term U.S. government and Value 5,874,820 [2]
ProShares Ultra Silver [Member] | U.S. Treasury Bills 0.036% Due 11/13/14 [Member]
  
Schedule of Investments [Line Items]  
Principal Amount 76,937,000 [2]
Total short-term U.S. government and Value 76,922,574 [2]
ProShares Ultra Silver [Member] | U.S. Treasury Bills 0.038% Due 11/06/14 [Member]
  
Schedule of Investments [Line Items]  
Principal Amount 85,846,000 [2]
Total short-term U.S. government and Value 85,832,265 [2]
ProShares Ultra Silver [Member] | U.S. Treasury Bills 0.025% Due 09/18/14 [Member]
  
Schedule of Investments [Line Items]  
Principal Amount 4,900,000
Total short-term U.S. government and Value 4,899,785
ProShares Ultra Silver [Member] | U.S. Treasury Bills 0.031% Due 09/04/14 [Member]
  
Schedule of Investments [Line Items]  
Principal Amount 21,081,000 [2]
Total short-term U.S. government and Value 21,080,239 [2]
ProShares Ultra Silver [Member] | U.S. Treasury Bills 0.066% Due 08/07/14 [Member]
  
Schedule of Investments [Line Items]  
Principal Amount 4,566,000
Total short-term U.S. government and Value 4,565,977
ProShares Ultra Silver [Member] | U.S. Treasury Bills 0.070% Due 08/28/14 [Member]
  
Schedule of Investments [Line Items]  
Principal Amount 46,560,000 [2]
Total short-term U.S. government and Value 46,558,500 [2]
ProShares Ultra Silver [Member] | U.S. Treasury Bills 0.036% Due 10/23/14 [Member]
  
Schedule of Investments [Line Items]  
Principal Amount 6,088,000 [2]
Total short-term U.S. government and Value 6,087,325 [2]
ProShares Ultra Silver [Member] | U.S. Treasury Bills 0.046% due 07/10/14 [Member]
  
Schedule of Investments [Line Items]  
Principal Amount 17,973,000
Total short-term U.S. government and Value 17,972,978
ProShares Ultra Silver [Member] | U.S. Treasury Bills 0.040% Due 08/21/14 [Member]
  
Schedule of Investments [Line Items]  
Principal Amount 27,690,000 [2]
Total short-term U.S. government and Value 27,689,019 [2]
ProShares Ultra Silver [Member] | U.S. Treasury Bills 0.030% Due 09/11/14 [Member]
  
Schedule of Investments [Line Items]  
Principal Amount 127,037,000 [2]
Total short-term U.S. government and Value 127,031,918 [2]
ProShares Ultra Australian Dollar [Member]
  
Schedule of Investments [Line Items]  
Total short-term U.S. government and Value 3,087,416
ProShares Ultra Australian Dollar [Member] | U.S. Treasury Bills 0.037% Due 10/23/14 [Member]
  
Schedule of Investments [Line Items]  
Principal Amount 284,000
Total short-term U.S. government and Value 283,969
ProShares Ultra Australian Dollar [Member] | U.S. Treasury Bills 0.045% Due 11/20/14 [Member]
  
Schedule of Investments [Line Items]  
Principal Amount 2,804,000
Total short-term U.S. government and Value 2,803,447
ProShares Ultra Euro [Member]
  
Schedule of Investments [Line Items]  
Total short-term U.S. government and Value 2,486,772
ProShares Ultra Euro [Member] | U.S. Treasury Bills 0.037% Due 10/23/14 [Member]
  
Schedule of Investments [Line Items]  
Principal Amount 246,000 [3]
Total short-term U.S. government and Value 245,973 [3]
ProShares Ultra Euro [Member] | U.S. Treasury Bills 0.036% Due 11/13/14 [Member]
  
Schedule of Investments [Line Items]  
Principal Amount 1,038,000
Total short-term U.S. government and Value 1,037,805
ProShares Ultra Euro [Member] | U.S. Treasury Bills 0.060% Due 08/07/14 [Member]
  
Schedule of Investments [Line Items]  
Principal Amount 1,203,000 [3]
Total short-term U.S. government and Value 1,202,994 [3]
ProShares Ultra Yen [Member]
  
Schedule of Investments [Line Items]  
Total short-term U.S. government and Value 1,479,818
ProShares Ultra Yen [Member] | U.S. Treasury Bills 0.037% Due 10/23/14 [Member]
  
Schedule of Investments [Line Items]  
Principal Amount 368,000 [3]
Total short-term U.S. government and Value 367,959 [3]
ProShares Ultra Yen [Member] | U.S. Treasury Bills 0.036% Due 11/13/14 [Member]
  
Schedule of Investments [Line Items]  
Principal Amount 751,000
Total short-term U.S. government and Value 750,859
ProShares Ultra Yen [Member] | U.S. Treasury Bills 0.050% Due 07/10/14 [Member]
  
Schedule of Investments [Line Items]  
Principal Amount 361,000 [3]
Total short-term U.S. government and Value 361,000 [3]
ProShares VIX Short-Term Futures ETF [Member]
  
Schedule of Investments [Line Items]  
Total short-term U.S. government and Value 77,584,126
ProShares VIX Short-Term Futures ETF [Member] | U.S. Treasury Bills 0.035% Due 08/14/14 [Member]
  
Schedule of Investments [Line Items]  
Principal Amount 3,820,000
Total short-term U.S. government and Value 3,819,883
ProShares VIX Short-Term Futures ETF [Member] | U.S. Treasury Bills 0.035% Due 09/11/14 [Member]
  
Schedule of Investments [Line Items]  
Principal Amount 831,000
Total short-term U.S. government and Value 830,967
ProShares VIX Short-Term Futures ETF [Member] | U.S. Treasury Bills 0.045% Due 11/20/14 [Member]
  
Schedule of Investments [Line Items]  
Principal Amount 7,913,000
Total short-term U.S. government and Value 7,911,439
ProShares VIX Short-Term Futures ETF [Member] | U.S. Treasury Bills 0.039% Due 08/28/14 [Member]
  
Schedule of Investments [Line Items]  
Principal Amount 2,264,000
Total short-term U.S. government and Value 2,263,927
ProShares VIX Short-Term Futures ETF [Member] | U.S. Treasury Bills 0.048% Due 11/06/14 [Member]
  
Schedule of Investments [Line Items]  
Principal Amount 4,918,000
Total short-term U.S. government and Value 4,917,213
ProShares VIX Short-Term Futures ETF [Member] | U.S. Treasury Bills 0.067% Due 08/21/14 [Member]
  
Schedule of Investments [Line Items]  
Principal Amount 4,099,000
Total short-term U.S. government and Value 4,098,855
ProShares VIX Short-Term Futures ETF [Member] | U.S Treasury Bills 0.048% Due 07/10/14 [Member]
  
Schedule of Investments [Line Items]  
Principal Amount 1,424,000
Total short-term U.S. government and Value 1,423,998
ProShares VIX Short-Term Futures ETF [Member] | U.S Treasury Bills 0.026% Due 09/25/14 [Member]
  
Schedule of Investments [Line Items]  
Principal Amount 1,568,000
Total short-term U.S. government and Value 1,567,888
ProShares VIX Short-Term Futures ETF [Member] | U.S Treasury Bills 0.033% Due 01/08/15 [Member]
  
Schedule of Investments [Line Items]  
Principal Amount 6,663,000
Total short-term U.S. government and Value 6,661,586
ProShares VIX Short-Term Futures ETF [Member] | U.S. Treasury Bills 0.055% Due 08/07/14 [Member]
  
Schedule of Investments [Line Items]  
Principal Amount 3,338,000
Total short-term U.S. government and Value 3,337,983
ProShares VIX Short-Term Futures ETF [Member] | U.S Treasury Bills 0.036% Due 09/04/14 [Member]
  
Schedule of Investments [Line Items]  
Principal Amount 28,864,000
Total short-term U.S. government and Value 28,862,958
ProShares VIX Short-Term Futures ETF [Member] | U.S Treasury Bills 0.040% Due 09/18/14 [Member]
  
Schedule of Investments [Line Items]  
Principal Amount 1,389,000
Total short-term U.S. government and Value 1,388,939
ProShares VIX Short-Term Futures ETF [Member] | U.S Treasury Bills 0.033% Due 10/23/14 [Member]
  
Schedule of Investments [Line Items]  
Principal Amount 5,984,000
Total short-term U.S. government and Value 5,983,337
ProShares VIX Short-Term Futures ETF [Member] | U.S Treasury Bills 0.044% Due 11/13/14 [Member]
  
Schedule of Investments [Line Items]  
Principal Amount 4,516,000
Total short-term U.S. government and Value $ 4,515,153
[1] All or partial amount pledged as collateral for swap agreements.
[2] All or partial amount pledged as collateral for forward agreements.
[3] All or partial amount pledged as collateral for foreign currency forward contracts.