v3.26.1
Statements of Financial Condition - USD ($)
Jun. 30, 2026
Dec. 31, 2025
Assets    
Cash $ 505,018,497 $ 2,000,384,525
Due from counterparty 11,540,059 0
Receivable from capital shares sold 47,691,291 141,593,234
Receivable for dividends from affiliates 1,157,885 0
Interest receivable 3,576,701 5,605,894
Total assets 4,888,866,290 6,062,940,882
Liabilities    
Payable for capital shares redeemed 43,105,931 80,016,715
Brokerage commissions and futures account fees payable $ 62,775 $ 87,843
Accounts Payable, Related Party, Type [Extensible Enumeration] Related Party [Member] Related Party [Member]
Payable to Sponsor $ 3,975,571 $ 4,227,029
Total liabilities 324,039,306 338,871,553
Commitments and Contingencies (Note 2)
Shareholders' equity    
Shareholders' equity 4,564,826,984 5,724,069,329
Total liabilities and shareholders' equity $ 4,888,866,290 $ 6,062,940,882
Shares outstanding 121,861,975 108,548,066
Number of authorized shares not disclosed true true
Common stock shares issued not disclosed true true
U.S. Government Agencies Short-term Debt Securities [Member]    
Assets    
Short-term U.S. government and agency obligations (Note 3) $ 2,133,460,710 $ 2,259,034,978
Affiliated Investments [Member]    
Assets    
Short-term U.S. government and agency obligations (Note 3) 1,258,857,300 0
Futures Contracts [Member]    
Assets    
Segregated cash balances with brokers for futures contracts 863,694,485 1,057,966,488
Receivable on open futures contracts 50,301,063 62,341,509
Liabilities    
Payable on open futures contracts 34,944,427 234,805,824
Swap Agreements [Member]    
Assets    
Segregated cash balances with brokers for futures contracts 0 177,725,284
Unrealized appreciation 11,703,095 342,589,713
Liabilities    
Unrealized depreciation 240,815,744 18,039,464
Foreign Currency Forward Contracts [Member]    
Assets    
Segregated cash balances with brokers for futures contracts 0 14,672,676
Unrealized appreciation 1,865,204 1,026,581
Liabilities    
Unrealized depreciation 1,134,858 1,694,678
ProShares Short VIX Short-Term Futures ETF [Member]    
Assets    
Short-term U.S. government and agency obligations (Note 3) 119,690,753  
Cash 14,257,532 87,603,058
Receivable for dividends from affiliates 59,293 0
Interest receivable 303,760 340,241
Total assets 222,118,789 243,392,839
Liabilities    
Brokerage commissions and futures account fees payable $ 5,609 $ 6,400
Accounts Payable, Related Party, Type [Extensible Enumeration] Related Party [Member] Related Party [Member]
Payable to Sponsor $ 179,403 $ 184,353
Total liabilities 571,547 1,041,802
Commitments and Contingencies (Note 2)
Shareholders' equity    
Shareholders' equity 221,547,242 242,351,037
Total liabilities and shareholders' equity $ 222,118,789 $ 243,392,839
Shares outstanding 3,868,614 4,368,614
Net asset value per share $ 57.27 $ 55.48
Market value per share $ 57.26 $ 55.38
ProShares Short VIX Short-Term Futures ETF [Member] | U.S. Government Agencies Short-term Debt Securities [Member]    
Assets    
Short-term U.S. government and agency obligations (Note 3) $ 44,645,753 $ 59,907,798
ProShares Short VIX Short-Term Futures ETF [Member] | Affiliated Investments [Member]    
Assets    
Short-term U.S. government and agency obligations (Note 3) 75,045,000 0
ProShares Short VIX Short-Term Futures ETF [Member] | Futures Contracts [Member]    
Assets    
Segregated cash balances with brokers for futures contracts 86,217,117 93,632,448
Receivable on open futures contracts 1,590,334 1,909,294
Liabilities    
Payable on open futures contracts 386,535 851,049
ProShares Ultra Bloomberg Crude Oil [Member]    
Assets    
Short-term U.S. government and agency obligations (Note 3) [1] 318,688,306  
Cash 50,510,916 101,024,953
Due from counterparty 3,496,381 0
Receivable for dividends from affiliates 110,873 0
Interest receivable 171,450 368,065
Total assets 388,804,910 398,825,242
Liabilities    
Payable for capital shares redeemed $ 0 $ 2,895,283
Accounts Payable, Related Party, Type [Extensible Enumeration] Related Party [Member] Related Party [Member]
Payable to Sponsor $ 282,284 $ 314,178
Total liabilities 76,840,797 15,787,255
Commitments and Contingencies (Note 2)
Shareholders' equity    
Shareholders' equity 311,964,113 383,037,987
Total liabilities and shareholders' equity $ 388,804,910 $ 398,825,242
Shares outstanding 9,593,096 19,843,096
Net asset value per share $ 32.52 $ 19.3
Market value per share $ 32.95 $ 19.32
ProShares Ultra Bloomberg Crude Oil [Member] | U.S. Government Agencies Short-term Debt Securities [Member]    
Assets    
Short-term U.S. government and agency obligations (Note 3) $ 248,639,306 $ 149,575,489
ProShares Ultra Bloomberg Crude Oil [Member] | Affiliated Investments [Member]    
Assets    
Short-term U.S. government and agency obligations (Note 3) 70,049,000 0
ProShares Ultra Bloomberg Crude Oil [Member] | Futures Contracts [Member]    
Assets    
Segregated cash balances with brokers for futures contracts 15,179,228 38,125,720
Receivable on open futures contracts 256,600 602,246
Liabilities    
Payable on open futures contracts 861,657 1,426,673
ProShares Ultra Bloomberg Crude Oil [Member] | Swap Agreements [Member]    
Assets    
Segregated cash balances with brokers for futures contracts 0 109,128,769
Unrealized appreciation 391,156 0
Liabilities    
Unrealized depreciation 75,696,856 11,151,121
ProShares Ultra Bloomberg Natural Gas [Member]    
Assets    
Short-term U.S. government and agency obligations (Note 3) 199,708,000  
Cash 26,058,117 141,320,716
Receivable from capital shares sold 0 28,186,350
Receivable for dividends from affiliates 90,830 0
Interest receivable 269,558 581,253
Total assets 333,950,797 603,374,651
Liabilities    
Payable for capital shares redeemed 26,284,256 0
Brokerage commissions and futures account fees payable $ 7,625 $ 14,860
Accounts Payable, Related Party, Type [Extensible Enumeration] Related Party [Member] Related Party [Member]
Payable to Sponsor $ 250,930 $ 417,836
Total liabilities 26,542,811 68,395,984
Commitments and Contingencies (Note 2)
Shareholders' equity    
Shareholders' equity 307,407,986 534,978,667
Total liabilities and shareholders' equity $ 333,950,797 $ 603,374,651
Shares outstanding 11,111,144 11,861,524
Net asset value per share $ 27.67 $ 4,510
Market value per share $ 27.44 $ 45.8
ProShares Ultra Bloomberg Natural Gas [Member] | U.S. Government Agencies Short-term Debt Securities [Member]    
Assets    
Short-term U.S. government and agency obligations (Note 3) $ 99,638,000 $ 234,273,034
ProShares Ultra Bloomberg Natural Gas [Member] | Affiliated Investments [Member]    
Assets    
Short-term U.S. government and agency obligations (Note 3) 100,070,000 0
ProShares Ultra Bloomberg Natural Gas [Member] | Futures Contracts [Member]    
Assets    
Segregated cash balances with brokers for futures contracts 91,564,728 199,013,298
Receivable on open futures contracts 16,259,564 0
Liabilities    
Payable on open futures contracts 0 67,963,288
ProShares Ultra Euro [Member]    
Assets    
Cash 3,076,855 5,185,710
Interest receivable 8,643 15,545
Total assets $ 5,080,298 $ 5,930,641
Liabilities    
Accounts Payable, Related Party, Type [Extensible Enumeration] Related Party [Member] Related Party [Member]
Payable to Sponsor $ 3,922 $ 4,756
Total liabilities 130,338 4,785
Commitments and Contingencies (Note 2)
Shareholders' equity    
Shareholders' equity 4,949,960 5,925,856
Total liabilities and shareholders' equity $ 5,080,298 $ 5,930,641
Shares outstanding 400,000 450,000
Net asset value per share $ 12.37 $ 13.17
Market value per share $ 12.36 $ 13.16
ProShares Ultra Euro [Member] | U.S. Government Agencies Short-term Debt Securities [Member]    
Assets    
Short-term U.S. government and agency obligations (Note 3) $ 1,994,224 $ 0
ProShares Ultra Euro [Member] | Foreign Currency Forward Contracts [Member]    
Assets    
Segregated cash balances with brokers for futures contracts 0 666,667
Unrealized appreciation 576 62,719
Liabilities    
Unrealized depreciation 126,416 29
ProShares Ultra Gold [Member]    
Assets    
Short-term U.S. government and agency obligations (Note 3) 578,615,670  
Cash 61,461,361 379,927,481
Due from counterparty 8,043,678 0
Receivable from capital shares sold 6,607,322 0
Receivable for dividends from affiliates 196,040 0
Interest receivable 216,868 662,431
Total assets 678,919,206 1,035,302,326
Liabilities    
Payable for capital shares redeemed $ 4,404,882 $ 5,589,989
Accounts Payable, Related Party, Type [Extensible Enumeration] Related Party [Member] Related Party [Member]
Payable to Sponsor $ 529,587 $ 814,922
Total liabilities 38,027,493 20,615,385
Commitments and Contingencies (Note 2)
Shareholders' equity    
Shareholders' equity 640,891,713 1,014,686,941
Total liabilities and shareholders' equity $ 678,919,206 $ 1,035,302,326
Shares outstanding 14,550,000 18,150,000
Net asset value per share $ 44.05 $ 55.91
Market value per share $ 43.87 $ 55.52
ProShares Ultra Gold [Member] | U.S. Government Agencies Short-term Debt Securities [Member]    
Assets    
Short-term U.S. government and agency obligations (Note 3) $ 398,489,670 $ 548,706,159
ProShares Ultra Gold [Member] | Affiliated Investments [Member]    
Assets    
Short-term U.S. government and agency obligations (Note 3) 180,126,000 0
ProShares Ultra Gold [Member] | Futures Contracts [Member]    
Assets    
Segregated cash balances with brokers for futures contracts 23,778,267 59,232,000
Liabilities    
Payable on open futures contracts 210,535 14,210,474
ProShares Ultra Gold [Member] | Swap Agreements [Member]    
Assets    
Segregated cash balances with brokers for futures contracts 0 18,097,800
Unrealized appreciation 0 28,676,455
Liabilities    
Unrealized depreciation 32,882,489 0
ProShares Ultra Silver [Member]    
Assets    
Short-term U.S. government and agency obligations (Note 3) 1,219,935,692  
Cash 72,886,474 803,492,250
Receivable from capital shares sold 17,163,549 109,152,231
Receivable for dividends from affiliates 252,772 0
Interest receivable 412,381 1,543,277
Total assets $ 1,411,077,351 $ 2,381,149,490
Liabilities    
Accounts Payable, Related Party, Type [Extensible Enumeration] Related Party [Member] Related Party [Member]
Payable to Sponsor $ 1,138,183 $ 1,536,740
Total liabilities 141,203,407 143,864,223
Commitments and Contingencies (Note 2)
Shareholders' equity    
Shareholders' equity 1,269,873,944 2,237,285,267
Total liabilities and shareholders' equity $ 1,411,077,351 $ 2,381,149,490
Shares outstanding 18,496,526 14,346,526
Net asset value per share $ 68.65 $ 155.95
Market value per share $ 68.01 $ 155.12
ProShares Ultra Silver [Member] | U.S. Government Agencies Short-term Debt Securities [Member]    
Assets    
Short-term U.S. government and agency obligations (Note 3) $ 939,739,692 $ 967,310,974
ProShares Ultra Silver [Member] | Affiliated Investments [Member]    
Assets    
Short-term U.S. government and agency obligations (Note 3) 280,196,000 0
ProShares Ultra Silver [Member] | Futures Contracts [Member]    
Assets    
Segregated cash balances with brokers for futures contracts 88,533,257 185,737,500
Receivable on open futures contracts 9,023,582 0
Liabilities    
Payable on open futures contracts 7,999,929 142,327,483
ProShares Ultra Silver [Member] | Swap Agreements [Member]    
Assets    
Unrealized appreciation 2,869,644 313,913,258
Liabilities    
Unrealized depreciation 132,065,295 0
ProShares Ultra VIX Short-Term Futures ETF [Member]    
Assets    
Short-term U.S. government and agency obligations (Note 3) 50,030,000  
Cash 28,834,894 20,831,598
Receivable from capital shares sold 13,652,345 0
Receivable for dividends from affiliates 56,250 0
Interest receivable 516,678 633,386
Total assets 259,923,016 411,170,106
Liabilities    
Payable for capital shares redeemed 0 3,584,487
Brokerage commissions and futures account fees payable $ 29,960 $ 39,021
Accounts Payable, Related Party, Type [Extensible Enumeration] Related Party [Member] Related Party [Member]
Payable to Sponsor $ 248,677 $ 350,365
Total liabilities 12,586,928 10,763,970
Commitments and Contingencies (Note 2)
Shareholders' equity    
Shareholders' equity 247,336,088 400,406,136
Total liabilities and shareholders' equity $ 259,923,016 $ 411,170,106
Shares outstanding 9,967,347 11,167,347
Net asset value per share $ 24.81 $ 35.86
Market value per share $ 24.89 $ 35.93
ProShares Ultra VIX Short-Term Futures ETF [Member] | U.S. Government Agencies Short-term Debt Securities [Member]    
Assets    
Short-term U.S. government and agency obligations (Note 3) $ 0 $ 99,775,566
ProShares Ultra VIX Short-Term Futures ETF [Member] | Affiliated Investments [Member]    
Assets    
Short-term U.S. government and agency obligations (Note 3) 50,030,000 0
ProShares Ultra VIX Short-Term Futures ETF [Member] | Futures Contracts [Member]    
Assets    
Segregated cash balances with brokers for futures contracts 166,832,849 272,061,021
Receivable on open futures contracts 0 17,868,535
Liabilities    
Payable on open futures contracts 12,308,291 6,790,097
ProShares Ultra Yen [Member]    
Assets    
Short-term U.S. government and agency obligations (Note 3) 17,986,385  
Cash 14,124,775 43,846,101
Receivable for dividends from affiliates 8,696 0
Interest receivable 40,189 128,447
Total assets $ 32,167,753 $ 49,887,722
Liabilities    
Accounts Payable, Related Party, Type [Extensible Enumeration] Related Party [Member] Related Party [Member]
Payable to Sponsor $ 23,594 $ 38,563
Total liabilities 981,627 1,222,372
Commitments and Contingencies (Note 2)
Shareholders' equity    
Shareholders' equity 31,186,126 48,665,350
Total liabilities and shareholders' equity $ 32,167,753 $ 49,887,722
Shares outstanding 1,799,970 2,549,970
Net asset value per share $ 17.33 $ 19.08
Market value per share $ 17.38 $ 19.06
ProShares Ultra Yen [Member] | U.S. Government Agencies Short-term Debt Securities [Member]    
Assets    
Short-term U.S. government and agency obligations (Note 3) $ 6,979,785 $ 0
ProShares Ultra Yen [Member] | Affiliated Investments [Member]    
Assets    
Short-term U.S. government and agency obligations (Note 3) 11,006,600 0
ProShares Ultra Yen [Member] | Foreign Currency Forward Contracts [Member]    
Assets    
Segregated cash balances with brokers for futures contracts 0 5,912,013
Unrealized appreciation 7,708 1,161
Liabilities    
Unrealized depreciation 958,033 1,183,809
ProShares UltraShort Bloomberg Crude Oil [Member]    
Assets    
Short-term U.S. government and agency obligations (Note 3) [1] 579,154,830  
Cash 59,378,220 19,951,883
Receivable from capital shares sold 0 981,948
Receivable for dividends from affiliates 199,558 0
Interest receivable 727,437 124,609
Total assets 895,308,355 89,678,538
Liabilities    
Payable for capital shares redeemed $ 12,416,793 $ 0
Accounts Payable, Related Party, Type [Extensible Enumeration] Related Party [Member] Related Party [Member]
Payable to Sponsor $ 852,745 $ 73,119
Total liabilities 13,269,538 212,148
Commitments and Contingencies (Note 2)
Shareholders' equity    
Shareholders' equity 882,038,817 89,466,390
Total liabilities and shareholders' equity $ 895,308,355 $ 89,678,538
Shares outstanding 24,863,302 1,138,805
Net asset value per share $ 35.48 $ 78.56
Market value per share $ 35.02 $ 78.44
ProShares UltraShort Bloomberg Crude Oil [Member] | U.S. Government Agencies Short-term Debt Securities [Member]    
Assets    
Short-term U.S. government and agency obligations (Note 3) $ 278,944,830 $ 44,913,599
ProShares UltraShort Bloomberg Crude Oil [Member] | Affiliated Investments [Member]    
Assets    
Short-term U.S. government and agency obligations (Note 3) 300,210,000 0
ProShares UltraShort Bloomberg Crude Oil [Member] | Futures Contracts [Member]    
Assets    
Segregated cash balances with brokers for futures contracts 234,271,843 22,519,576
Receivable on open futures contracts 21,576,467 1,186,923
Liabilities    
Payable on open futures contracts 0 139,029
ProShares UltraShort Bloomberg Natural Gas [Member]    
Assets    
Short-term U.S. government and agency obligations (Note 3) 45,031,500  
Cash 52,968,760 24,344,867
Receivable from capital shares sold 7,859,710 0
Receivable for dividends from affiliates 50,636 0
Interest receivable 245,315 201,070
Total assets 146,235,079 159,910,059
Liabilities    
Payable for capital shares redeemed 0 14,316,465
Brokerage commissions and futures account fees payable $ 2,656 $ 6,012
Accounts Payable, Related Party, Type [Extensible Enumeration] Related Party [Member] Related Party [Member]
Payable to Sponsor $ 108,620 $ 149,995
Total liabilities 6,251,817 15,532,968
Commitments and Contingencies (Note 2)
Shareholders' equity    
Shareholders' equity 139,983,262 144,377,091
Total liabilities and shareholders' equity $ 146,235,079 $ 159,910,059
Shares outstanding 6,233,712 4,033,712
Net asset value per share $ 22.46 $ 35.79
Market value per share $ 22.65 $ 35.27
ProShares UltraShort Bloomberg Natural Gas [Member] | U.S. Government Agencies Short-term Debt Securities [Member]    
Assets    
Short-term U.S. government and agency obligations (Note 3) $ 0 $ 69,821,093
ProShares UltraShort Bloomberg Natural Gas [Member] | Affiliated Investments [Member]    
Assets    
Short-term U.S. government and agency obligations (Note 3) 45,031,500 0
ProShares UltraShort Bloomberg Natural Gas [Member] | Futures Contracts [Member]    
Assets    
Segregated cash balances with brokers for futures contracts 40,079,158 49,604,357
Receivable on open futures contracts 0 15,938,672
Liabilities    
Payable on open futures contracts 6,140,541 1,060,496
ProShares UltraShort Euro [Member]    
Assets    
Short-term U.S. government and agency obligations (Note 3) 19,977,121  
Cash 14,361,335 31,282,858
Receivable for dividends from affiliates 7,906 0
Interest receivable 45,261 95,777
Total assets $ 35,334,772 $ 35,927,355
Liabilities    
Accounts Payable, Related Party, Type [Extensible Enumeration] Related Party [Member] Related Party [Member]
Payable to Sponsor $ 27,262 $ 28,744
Total liabilities 71,835 428,750
Commitments and Contingencies (Note 2)
Shareholders' equity    
Shareholders' equity 35,262,937 35,498,605
Total liabilities and shareholders' equity $ 35,334,772 $ 35,927,355
Shares outstanding 1,150,000 1,250,000
Net asset value per share $ 30.66 $ 28.4
Market value per share $ 30.62 $ 28.33
ProShares UltraShort Euro [Member] | U.S. Government Agencies Short-term Debt Securities [Member]    
Assets    
Short-term U.S. government and agency obligations (Note 3) $ 9,971,121 $ 0
ProShares UltraShort Euro [Member] | Affiliated Investments [Member]    
Assets    
Short-term U.S. government and agency obligations (Note 3) 10,006,000 0
ProShares UltraShort Euro [Member] | Foreign Currency Forward Contracts [Member]    
Assets    
Segregated cash balances with brokers for futures contracts 0 4,541,088
Unrealized appreciation 943,149 7,632
Liabilities    
Unrealized depreciation 44,573 400,006
ProShares UltraShort Gold [Member]    
Assets    
Short-term U.S. government and agency obligations (Note 3) 69,876,200  
Cash 27,883,061 66,655,665
Receivable from capital shares sold 1,344,515 0
Receivable for dividends from affiliates 30,406 0
Interest receivable 106,179 187,856
Total assets $ 111,448,098 $ 84,140,126
Liabilities    
Accounts Payable, Related Party, Type [Extensible Enumeration] Related Party [Member] Related Party [Member]
Payable to Sponsor $ 83,099 $ 59,481
Total liabilities 255,025 2,664,912
Commitments and Contingencies (Note 2)
Shareholders' equity    
Shareholders' equity 111,193,073 81,475,214
Total liabilities and shareholders' equity $ 111,448,098 $ 84,140,126
Shares outstanding 4,136,631 3,136,631
Net asset value per share $ 26.88 $ 25.98
Market value per share $ 26.98 $ 26.15
ProShares UltraShort Gold [Member] | U.S. Government Agencies Short-term Debt Securities [Member]    
Assets    
Short-term U.S. government and agency obligations (Note 3) $ 39,855,200 $ 0
ProShares UltraShort Gold [Member] | Affiliated Investments [Member]    
Assets    
Short-term U.S. government and agency obligations (Note 3) 30,021,000 0
ProShares UltraShort Gold [Member] | Futures Contracts [Member]    
Assets    
Segregated cash balances with brokers for futures contracts 9,278,684 4,192,800
Receivable on open futures contracts 10,742 155,440
Liabilities    
Payable on open futures contracts 171,926 37,235
ProShares UltraShort Gold [Member] | Swap Agreements [Member]    
Assets    
Segregated cash balances with brokers for futures contracts 0 12,948,365
Unrealized appreciation 2,918,311 0
Liabilities    
Unrealized depreciation 0 2,568,196
ProShares UltraShort Silver [Member]    
Assets    
Short-term U.S. government and agency obligations (Note 3) [1] 64,642,208  
Cash 10,207,398 164,887,996
Receivable from capital shares sold 0 2,129,315
Receivable for dividends from affiliates 15,812 0
Interest receivable 70,394 207,484
Total assets 93,297,141 251,190,154
Liabilities    
Payable for capital shares redeemed $ 0 $ 49,772,735
Accounts Payable, Related Party, Type [Extensible Enumeration] Related Party [Member] Related Party [Member]
Payable to Sponsor $ 78,253 $ 74,694
Total liabilities 2,065,967 54,167,576
Commitments and Contingencies (Note 2)
Shareholders' equity    
Shareholders' equity 91,231,174 197,022,578
Total liabilities and shareholders' equity $ 93,297,141 $ 251,190,154
Shares outstanding 2,990,818 3,701,026
Net asset value per share $ 30.5 $ 53.23
Market value per share $ 30.79 $ 53.4
ProShares UltraShort Silver [Member] | U.S. Government Agencies Short-term Debt Securities [Member]    
Assets    
Short-term U.S. government and agency obligations (Note 3) $ 44,628,208 $ 0
ProShares UltraShort Silver [Member] | Affiliated Investments [Member]    
Assets    
Short-term U.S. government and agency obligations (Note 3) 20,014,000 0
ProShares UltraShort Silver [Member] | Futures Contracts [Member]    
Assets    
Segregated cash balances with brokers for futures contracts 12,215,100 27,244,750
Receivable on open futures contracts 622,245 19,170,259
Liabilities    
Payable on open futures contracts 1,816,610 0
ProShares UltraShort Silver [Member] | Swap Agreements [Member]    
Assets    
Segregated cash balances with brokers for futures contracts 0 37,550,350
Unrealized appreciation 5,523,984 0
Liabilities    
Unrealized depreciation 171,104 4,320,147
ProShares UltraShort Yen [Member]    
Assets    
Short-term U.S. government and agency obligations (Note 3) 16,975,321  
Cash 13,119,238 31,050,946
Receivable for dividends from affiliates 5,534 0
Interest receivable 36,002 97,946
Total assets $ 31,049,866 $ 35,656,869
Liabilities    
Accounts Payable, Related Party, Type [Extensible Enumeration] Related Party [Member] Related Party [Member]
Payable to Sponsor $ 22,733 $ 29,619
Total liabilities 28,569 140,453
Commitments and Contingencies (Note 2)
Shareholders' equity    
Shareholders' equity 31,021,297 35,516,416
Total liabilities and shareholders' equity $ 31,049,866 $ 35,656,869
Shares outstanding 547,160 697,160
Net asset value per share $ 56.7 $ 50.94
Market value per share $ 56.62 $ 50.9
ProShares UltraShort Yen [Member] | U.S. Government Agencies Short-term Debt Securities [Member]    
Assets    
Short-term U.S. government and agency obligations (Note 3) $ 9,971,121 $ 0
ProShares UltraShort Yen [Member] | Affiliated Investments [Member]    
Assets    
Short-term U.S. government and agency obligations (Note 3) 7,004,200 0
ProShares UltraShort Yen [Member] | Foreign Currency Forward Contracts [Member]    
Assets    
Segregated cash balances with brokers for futures contracts 0 3,552,908
Unrealized appreciation 913,771 955,069
Liabilities    
Unrealized depreciation 5,836 110,834
ProShares VIX Mid-Term Futures ETF [Member]    
Assets    
Short-term U.S. government and agency obligations (Note 3) 24,972,800  
Cash 9,859,871 38,019,261
Receivable from capital shares sold 0 1,143,390
Receivable for dividends from affiliates 11,859 0
Interest receivable 43,187 117,024
Total assets 40,844,002 45,941,186
Liabilities    
Brokerage commissions and futures account fees payable $ 1,492 $ 2,156
Accounts Payable, Related Party, Type [Extensible Enumeration] Related Party [Member] Related Party [Member]
Payable to Sponsor $ 26,398 $ 27,972
Total liabilities 552,011 30,128
Commitments and Contingencies (Note 2)
Shareholders' equity    
Shareholders' equity 40,291,991 45,911,058
Total liabilities and shareholders' equity $ 40,844,002 $ 45,941,186
Shares outstanding 2,812,403 3,012,403
Net asset value per share $ 14.33 $ 15.24
Market value per share $ 14.35 $ 15.27
ProShares VIX Mid-Term Futures ETF [Member] | U.S. Government Agencies Short-term Debt Securities [Member]    
Assets    
Short-term U.S. government and agency obligations (Note 3) $ 9,963,800 $ 0
ProShares VIX Mid-Term Futures ETF [Member] | Affiliated Investments [Member]    
Assets    
Short-term U.S. government and agency obligations (Note 3) 15,009,000 0
ProShares VIX Mid-Term Futures ETF [Member] | Futures Contracts [Member]    
Assets    
Segregated cash balances with brokers for futures contracts 5,956,285 6,491,709
Receivable on open futures contracts 0 169,802
Liabilities    
Payable on open futures contracts 524,121 0
ProShares VIX Short-Term Futures ETF [Member]    
Assets    
Cash 46,029,690 40,959,182
Receivable from capital shares sold 1,063,850 0
Receivable for dividends from affiliates 61,420 0
Interest receivable 363,399 301,483
Total assets 203,306,857 231,463,578
Liabilities    
Payable for capital shares redeemed 0 3,857,756
Brokerage commissions and futures account fees payable $ 15,433 $ 19,394
Accounts Payable, Related Party, Type [Extensible Enumeration] Related Party [Member] Related Party [Member]
Payable to Sponsor $ 119,881 $ 121,692
Total liabilities 4,659,596 3,998,842
Commitments and Contingencies (Note 2)
Shareholders' equity    
Shareholders' equity 198,647,261 227,464,736
Total liabilities and shareholders' equity $ 203,306,857 $ 231,463,578
Shares outstanding 9,341,252 8,841,252
Net asset value per share $ 21.27 $ 25.73
Market value per share $ 21.29 $ 25.64
ProShares VIX Short-Term Futures ETF [Member] | U.S. Government Agencies Short-term Debt Securities [Member]    
Assets    
Short-term U.S. government and agency obligations (Note 3) $ 0 $ 84,751,266
ProShares VIX Short-Term Futures ETF [Member] | Affiliated Investments [Member]    
Assets    
Short-term U.S. government and agency obligations (Note 3) 65,039,000 0
ProShares VIX Short-Term Futures ETF [Member] | Futures Contracts [Member]    
Assets    
Segregated cash balances with brokers for futures contracts 89,787,969 100,111,309
Receivable on open futures contracts 961,529 5,340,338
Liabilities    
Payable on open futures contracts $ 4,524,282 $ 0
[1] Affiliated company as defined under the Investment Company Act of 1940.