v3.21.1
Statements of Operations - USD ($)
3 Months Ended
Mar. 31, 2021
Mar. 31, 2020
Investment Income    
Interest $ 549,742 $ 7,499,714 [1]
Expenses    
Management fee 12,169,010 5,838,804 [1]
Brokerage commissions 2,903,800 1,746,456 [1]
Brokerage fees 2,853,404 51,378 [1]
Total expenses 17,926,214 7,636,638 [1]
Net investment income (loss) (17,376,472) (136,924) [1]
Net realized gain (loss) on    
Net realized gain (loss) (477,186,271) 26,787,188 [1]
Change in net unrealized appreciation (depreciation) on    
Change in net unrealized appreciation (depreciation) (389,847,943) (58,422,629) [1]
Net realized and unrealized gain (loss) (867,034,214) (31,635,441) [1]
Net income (loss) (884,410,686) (31,772,365) [1]
Futures Contracts [Member]    
Net realized gain (loss) on    
Net realized gain (loss) (534,133,804) 315,177,827 [1]
Change in net unrealized appreciation (depreciation) on    
Change in net unrealized appreciation (depreciation) (257,111,138) 279,530,155 [1]
Swap Agreements [Member]    
Net realized gain (loss) on    
Net realized gain (loss) 55,764,481 (279,339,085) [1]
Change in net unrealized appreciation (depreciation) on    
Change in net unrealized appreciation (depreciation) (139,568,146) (341,111,914) [1]
Option [Member]    
Net realized gain (loss) on    
Net realized gain (loss) [1]   (9,707,000)
Foreign Currency Forward Contracts [Member]    
Net realized gain (loss) on    
Net realized gain (loss) 1,163,291 479,012 [1]
Change in net unrealized appreciation (depreciation) on    
Change in net unrealized appreciation (depreciation) 6,725,056 2,198,013 [1]
U.S. Government Agencies Short-term Debt Securities [Member]    
Net realized gain (loss) on    
Net realized gain (loss) 19,761 176,434 [1]
Change in net unrealized appreciation (depreciation) on    
Change in net unrealized appreciation (depreciation) 106,285 961,117 [1]
ProShares Short Euro [Member]    
Investment Income    
Interest 596 7,595
Expenses    
Management fee 9,053 5,503
Brokerage commissions 181 100
Total expenses 9,234 5,603
Net investment income (loss) (8,638) 1,992
Net realized gain (loss) on    
Net realized gain (loss) 69,393 (18,638)
Change in net unrealized appreciation (depreciation) on    
Change in net unrealized appreciation (depreciation) 78,642 67,294
Net realized and unrealized gain (loss) 148,035 48,656
Net income (loss) 139,397 50,648
ProShares Short Euro [Member] | Futures Contracts [Member]    
Net realized gain (loss) on    
Net realized gain (loss) 69,393 (18,638)
Change in net unrealized appreciation (depreciation) on    
Change in net unrealized appreciation (depreciation) 78,554 67,324
ProShares Short Euro [Member] | U.S. Government Agencies Short-term Debt Securities [Member]    
Change in net unrealized appreciation (depreciation) on    
Change in net unrealized appreciation (depreciation) 88 (30)
ProShares Short VIX Short-Term Futures ETF [Member]    
Investment Income    
Interest 33,890 749,861
Expenses    
Management fee 1,042,569 886,197
Brokerage commissions 175,910 189,532
Brokerage fees 257,777 29,728
Total expenses 1,476,256 1,105,457
Net investment income (loss) (1,442,366) (355,596)
Net realized gain (loss) on    
Net realized gain (loss) 24,209,417 (244,300,604)
Change in net unrealized appreciation (depreciation) on    
Change in net unrealized appreciation (depreciation) 42,125,118 21,055,658
Net realized and unrealized gain (loss) 66,334,535 (223,244,946)
Net income (loss) 64,892,169 (223,600,542)
ProShares Short VIX Short-Term Futures ETF [Member] | Futures Contracts [Member]    
Net realized gain (loss) on    
Net realized gain (loss) 24,209,417 (244,300,604)
Change in net unrealized appreciation (depreciation) on    
Change in net unrealized appreciation (depreciation) 42,121,892 20,973,802
ProShares Short VIX Short-Term Futures ETF [Member] | U.S. Government Agencies Short-term Debt Securities [Member]    
Change in net unrealized appreciation (depreciation) on    
Change in net unrealized appreciation (depreciation) 3,226 81,856
ProShares Ultra Bloomberg Crude Oil [Member]    
Investment Income    
Interest 168,075 1,401,460
Expenses    
Management fee 2,535,085 870,239
Brokerage commissions 293,200 126,337
Brokerage fees 98,937  
Total expenses 2,927,222 996,576
Net investment income (loss) (2,759,147) 404,884
Net realized gain (loss) on    
Net realized gain (loss) 334,351,228 (505,553,797)
Change in net unrealized appreciation (depreciation) on    
Change in net unrealized appreciation (depreciation) 35,035,656 (322,421,661)
Net realized and unrealized gain (loss) 369,386,884 (827,975,458)
Net income (loss) 366,627,737 (827,570,574)
ProShares Ultra Bloomberg Crude Oil [Member] | Futures Contracts [Member]    
Net realized gain (loss) on    
Net realized gain (loss) 191,676,501 (88,947,210)
Change in net unrealized appreciation (depreciation) on    
Change in net unrealized appreciation (depreciation) 93,984,872 (73,713,718)
ProShares Ultra Bloomberg Crude Oil [Member] | Swap Agreements [Member]    
Net realized gain (loss) on    
Net realized gain (loss) 142,674,727 (416,644,056)
Change in net unrealized appreciation (depreciation) on    
Change in net unrealized appreciation (depreciation) (58,990,789) (249,062,832)
ProShares Ultra Bloomberg Crude Oil [Member] | U.S. Government Agencies Short-term Debt Securities [Member]    
Net realized gain (loss) on    
Net realized gain (loss)   37,469
Change in net unrealized appreciation (depreciation) on    
Change in net unrealized appreciation (depreciation) 41,573 354,889
ProShares Ultra Bloomberg Natural Gas [Member]    
Investment Income    
Interest 13,815 139,339
Expenses    
Management fee 254,815 97,108
Brokerage commissions 92,297 44,582
Brokerage fees 81,848  
Total expenses 428,960 141,690
Net investment income (loss) (415,145) (2,351)
Net realized gain (loss) on    
Net realized gain (loss) 41,582,936 (22,818,551)
Change in net unrealized appreciation (depreciation) on    
Change in net unrealized appreciation (depreciation) (17,798,868) (4,437,037)
Net realized and unrealized gain (loss) 23,784,068 (27,255,588)
Net income (loss) 23,368,923 (27,257,939)
ProShares Ultra Bloomberg Natural Gas [Member] | Futures Contracts [Member]    
Net realized gain (loss) on    
Net realized gain (loss) 41,582,385 (22,819,605)
Change in net unrealized appreciation (depreciation) on    
Change in net unrealized appreciation (depreciation) (17,800,783) (4,466,823)
ProShares Ultra Bloomberg Natural Gas [Member] | U.S. Government Agencies Short-term Debt Securities [Member]    
Net realized gain (loss) on    
Net realized gain (loss) 551 1,054
Change in net unrealized appreciation (depreciation) on    
Change in net unrealized appreciation (depreciation) 1,915 29,786
ProShares Ultra Euro [Member]    
Investment Income    
Interest 584 15,801
Expenses    
Management fee 10,078 12,554
Total expenses 10,078 12,554
Net investment income (loss) (9,494) 3,247
Net realized gain (loss) on    
Net realized gain (loss) (27,342) (53,268)
Change in net unrealized appreciation (depreciation) on    
Change in net unrealized appreciation (depreciation) (311,052) (221,542)
Net realized and unrealized gain (loss) (338,394) (274,810)
Net income (loss) (347,888) (271,563)
ProShares Ultra Euro [Member] | Foreign Currency Forward Contracts [Member]    
Net realized gain (loss) on    
Net realized gain (loss) (27,342) (53,268)
Change in net unrealized appreciation (depreciation) on    
Change in net unrealized appreciation (depreciation) (311,140) (221,334)
ProShares Ultra Euro [Member] | U.S. Government Agencies Short-term Debt Securities [Member]    
Change in net unrealized appreciation (depreciation) on    
Change in net unrealized appreciation (depreciation) 88 (208)
ProShares Ultra Gold [Member]    
Investment Income    
Interest 35,827 414,684
Expenses    
Management fee 568,207 295,411
Brokerage commissions 14,888 10,365
Brokerage fees 32,402  
Total expenses 615,497 305,776
Net investment income (loss) (579,670) 108,908
Net realized gain (loss) on    
Net realized gain (loss) (51,247,887) 21,498,056
Change in net unrealized appreciation (depreciation) on    
Change in net unrealized appreciation (depreciation) (1,232,503) (19,097,360)
Net realized and unrealized gain (loss) (52,480,390) 2,400,696
Net income (loss) (53,060,060) 2,509,604
ProShares Ultra Gold [Member] | Futures Contracts [Member]    
Net realized gain (loss) on    
Net realized gain (loss) (16,805,897) (68,161)
Change in net unrealized appreciation (depreciation) on    
Change in net unrealized appreciation (depreciation) (2,253,749) (3,638,236)
ProShares Ultra Gold [Member] | Swap Agreements [Member]    
Net realized gain (loss) on    
Net realized gain (loss) (34,442,235) 21,566,217
Change in net unrealized appreciation (depreciation) on    
Change in net unrealized appreciation (depreciation) 1,019,450 (15,515,060)
ProShares Ultra Gold [Member] | U.S. Government Agencies Short-term Debt Securities [Member]    
Net realized gain (loss) on    
Net realized gain (loss) 245  
Change in net unrealized appreciation (depreciation) on    
Change in net unrealized appreciation (depreciation) 1,796 55,936
ProShares Ultra Silver [Member]    
Investment Income    
Interest 98,129 776,287
Expenses    
Management fee 1,631,135 481,247
Brokerage commissions 46,582 18,208
Brokerage fees 162,187  
Total expenses 1,839,904 499,455
Net investment income (loss) (1,741,775) 276,832
Net realized gain (loss) on    
Net realized gain (loss) 4,910,742 (3,697,654)
Change in net unrealized appreciation (depreciation) on    
Change in net unrealized appreciation (depreciation) (137,743,781) (85,061,831)
Net realized and unrealized gain (loss) (132,833,039) (88,759,485)
Net income (loss) (134,574,814) (88,482,653)
ProShares Ultra Silver [Member] | Futures Contracts [Member]    
Net realized gain (loss) on    
Net realized gain (loss) 6,896,270 (9,641,976)
Change in net unrealized appreciation (depreciation) on    
Change in net unrealized appreciation (depreciation) (52,592,033) (4,249,586)
ProShares Ultra Silver [Member] | Swap Agreements [Member]    
Net realized gain (loss) on    
Net realized gain (loss) (1,985,719) 5,944,322
Change in net unrealized appreciation (depreciation) on    
Change in net unrealized appreciation (depreciation) (85,173,669) (80,923,026)
ProShares Ultra Silver [Member] | U.S. Government Agencies Short-term Debt Securities [Member]    
Net realized gain (loss) on    
Net realized gain (loss) 191  
Change in net unrealized appreciation (depreciation) on    
Change in net unrealized appreciation (depreciation) 21,921 110,781
ProShares Ultra VIX Short-Term Futures ETF [Member]    
Investment Income    
Interest 113,969 1,411,740
Expenses    
Management fee 4,383,077 1,383,275
Brokerage commissions 1,956,628 741,009
Brokerage fees 1,843,813 16,721
Total expenses 8,183,518 2,141,005
Net investment income (loss) (8,069,549) (729,265)
Net realized gain (loss) on    
Net realized gain (loss) (704,499,504) 726,085,231
Change in net unrealized appreciation (depreciation) on    
Change in net unrealized appreciation (depreciation) (284,359,331) 176,516,915
Net realized and unrealized gain (loss) (988,858,835) 902,602,146
Net income (loss) (996,928,384) 901,872,881
ProShares Ultra VIX Short-Term Futures ETF [Member] | Futures Contracts [Member]    
Net realized gain (loss) on    
Net realized gain (loss) (653,063,682) 656,145,228
Change in net unrealized appreciation (depreciation) on    
Change in net unrealized appreciation (depreciation) (284,403,583) 198,355,954
ProShares Ultra VIX Short-Term Futures ETF [Member] | Swap Agreements [Member]    
Net realized gain (loss) on    
Net realized gain (loss) (51,454,342) 69,940,003
Change in net unrealized appreciation (depreciation) on    
Change in net unrealized appreciation (depreciation) 24,807 (21,974,093)
ProShares Ultra VIX Short-Term Futures ETF [Member] | U.S. Government Agencies Short-term Debt Securities [Member]    
Net realized gain (loss) on    
Net realized gain (loss) 18,520  
Change in net unrealized appreciation (depreciation) on    
Change in net unrealized appreciation (depreciation) 19,445 135,054
ProShares Ultra Yen [Member]    
Investment Income    
Interest 356 8,867
Expenses    
Management fee 6,649 7,241
Total expenses 6,649 7,241
Net investment income (loss) (6,293) 1,626
Net realized gain (loss) on    
Net realized gain (loss) (139,467) (8,483)
Change in net unrealized appreciation (depreciation) on    
Change in net unrealized appreciation (depreciation) (256,045) (19,313)
Net realized and unrealized gain (loss) (395,512) (27,796)
Net income (loss) (401,805) (26,170)
ProShares Ultra Yen [Member] | Foreign Currency Forward Contracts [Member]    
Net realized gain (loss) on    
Net realized gain (loss) (139,467) (8,483)
Change in net unrealized appreciation (depreciation) on    
Change in net unrealized appreciation (depreciation) (256,089) (19,239)
ProShares Ultra Yen [Member] | U.S. Government Agencies Short-term Debt Securities [Member]    
Change in net unrealized appreciation (depreciation) on    
Change in net unrealized appreciation (depreciation) 44 (74)
ProShares UltraShort Australian Dollar [Member]    
Investment Income    
Interest 258 20,054
Expenses    
Management fee 5,139 15,130
Brokerage commissions 386 1,499
Total expenses 5,525 16,629
Net investment income (loss) (5,267) 3,425
Net realized gain (loss) on    
Net realized gain (loss) (164,544) 670,950
Change in net unrealized appreciation (depreciation) on    
Change in net unrealized appreciation (depreciation) 206,052 947,380
Net realized and unrealized gain (loss) 41,508 1,618,330
Net income (loss) 36,241 1,621,755
ProShares UltraShort Australian Dollar [Member] | Futures Contracts [Member]    
Net realized gain (loss) on    
Net realized gain (loss) (164,544) 670,950
Change in net unrealized appreciation (depreciation) on    
Change in net unrealized appreciation (depreciation) 206,052 947,586
ProShares UltraShort Australian Dollar [Member] | U.S. Government Agencies Short-term Debt Securities [Member]    
Change in net unrealized appreciation (depreciation) on    
Change in net unrealized appreciation (depreciation)   (206)
ProShares UltraShort Bloomberg Crude Oil [Member]    
Investment Income    
Interest 10,835 248,709
Expenses    
Management fee 221,263 202,369
Brokerage commissions 43,044 77,053
Brokerage fees 47,712  
Total expenses 312,019 279,422
Net investment income (loss) (301,184) (30,713)
Net realized gain (loss) on    
Net realized gain (loss) (49,177,765) 51,674,002
Change in net unrealized appreciation (depreciation) on    
Change in net unrealized appreciation (depreciation) 5,638,844 76,581,357
Net realized and unrealized gain (loss) (43,538,921) 128,255,359
Net income (loss) (43,840,105) 128,224,646
ProShares UltraShort Bloomberg Crude Oil [Member] | Futures Contracts [Member]    
Net realized gain (loss) on    
Net realized gain (loss) (49,177,765) 6,504,689
Change in net unrealized appreciation (depreciation) on    
Change in net unrealized appreciation (depreciation) 5,636,634 54,837,080
ProShares UltraShort Bloomberg Crude Oil [Member] | Swap Agreements [Member]    
Net realized gain (loss) on    
Net realized gain (loss)   45,169,333
Change in net unrealized appreciation (depreciation) on    
Change in net unrealized appreciation (depreciation)   21,741,150
ProShares UltraShort Bloomberg Crude Oil [Member] | U.S. Government Agencies Short-term Debt Securities [Member]    
Net realized gain (loss) on    
Net realized gain (loss)   (20)
Change in net unrealized appreciation (depreciation) on    
Change in net unrealized appreciation (depreciation) 2,210 3,127
ProShares UltraShort Bloomberg Natural Gas [Member]    
Investment Income    
Interest 7,883 42,432
Expenses    
Management fee 159,337 32,430
Brokerage commissions 85,680 32,281
Brokerage fees 23,273  
Total expenses 268,290 64,711
Net investment income (loss) (260,407) (22,279)
Net realized gain (loss) on    
Net realized gain (loss) (6,359,394) 5,626,177
Change in net unrealized appreciation (depreciation) on    
Change in net unrealized appreciation (depreciation) 15,895,064 3,335,611
Net realized and unrealized gain (loss) 9,535,670 8,961,788
Net income (loss) 9,275,263 8,939,509
ProShares UltraShort Bloomberg Natural Gas [Member] | Futures Contracts [Member]    
Net realized gain (loss) on    
Net realized gain (loss) (6,359,394) 5,626,177
Change in net unrealized appreciation (depreciation) on    
Change in net unrealized appreciation (depreciation) 15,893,547 3,334,986
ProShares UltraShort Bloomberg Natural Gas [Member] | U.S. Government Agencies Short-term Debt Securities [Member]    
Change in net unrealized appreciation (depreciation) on    
Change in net unrealized appreciation (depreciation) 1,517 625
ProShares UltraShort Euro [Member]    
Investment Income    
Interest 7,166 399,657
Expenses    
Management fee 124,038 263,442
Total expenses 124,038 263,442
Net investment income (loss) (116,872) 136,215
Net realized gain (loss) on    
Net realized gain (loss) 70,527 1,047,283
Change in net unrealized appreciation (depreciation) on    
Change in net unrealized appreciation (depreciation) 4,392,237 3,190,251
Net realized and unrealized gain (loss) 4,462,764 4,237,534
Net income (loss) 4,345,892 4,373,749
ProShares UltraShort Euro [Member] | Foreign Currency Forward Contracts [Member]    
Net realized gain (loss) on    
Net realized gain (loss) 70,527 1,047,283
Change in net unrealized appreciation (depreciation) on    
Change in net unrealized appreciation (depreciation) 4,391,397 3,137,931
ProShares UltraShort Euro [Member] | U.S. Government Agencies Short-term Debt Securities [Member]    
Change in net unrealized appreciation (depreciation) on    
Change in net unrealized appreciation (depreciation) 840 52,320
ProShares UltraShort Gold [Member]    
Investment Income    
Interest 2,962 61,021
Expenses    
Management fee 63,727 43,239
Brokerage commissions 3,590 2,104
Brokerage fees 4,686  
Total expenses 72,003 45,343
Net investment income (loss) (69,041) 15,678
Net realized gain (loss) on    
Net realized gain (loss) 4,003,359 (5,930,882)
Change in net unrealized appreciation (depreciation) on    
Change in net unrealized appreciation (depreciation) (179,853) 2,676,974
Net realized and unrealized gain (loss) 3,823,506 (3,253,908)
Net income (loss) 3,754,465 (3,238,230)
ProShares UltraShort Gold [Member] | Futures Contracts [Member]    
Net realized gain (loss) on    
Net realized gain (loss) 1,334,982 (2,028,666)
Change in net unrealized appreciation (depreciation) on    
Change in net unrealized appreciation (depreciation) 236,075 641,113
ProShares UltraShort Gold [Member] | Swap Agreements [Member]    
Net realized gain (loss) on    
Net realized gain (loss) 2,668,208 (3,902,216)
Change in net unrealized appreciation (depreciation) on    
Change in net unrealized appreciation (depreciation) (416,739) 2,034,683
ProShares UltraShort Gold [Member] | U.S. Government Agencies Short-term Debt Securities [Member]    
Net realized gain (loss) on    
Net realized gain (loss) 169  
Change in net unrealized appreciation (depreciation) on    
Change in net unrealized appreciation (depreciation) 811 1,178
ProShares UltraShort Silver [Member]    
Investment Income    
Interest 3,117 44,536
Expenses    
Management fee 84,745 37,136
Brokerage commissions 7,444 3,981
Brokerage fees 9,991  
Total expenses 102,180 41,117
Net investment income (loss) (99,063) 3,419
Net realized gain (loss) on    
Net realized gain (loss) (2,932,266) 842,240
Change in net unrealized appreciation (depreciation) on    
Change in net unrealized appreciation (depreciation) 7,466,511 4,190,456
Net realized and unrealized gain (loss) 4,534,245 5,032,696
Net income (loss) 4,435,182 5,036,115
ProShares UltraShort Silver [Member] | Futures Contracts [Member]    
Net realized gain (loss) on    
Net realized gain (loss) (1,236,193) 1,920,009
Change in net unrealized appreciation (depreciation) on    
Change in net unrealized appreciation (depreciation) 3,496,970 1,603,007
ProShares UltraShort Silver [Member] | Swap Agreements [Member]    
Net realized gain (loss) on    
Net realized gain (loss) (1,696,158) (1,077,769)
Change in net unrealized appreciation (depreciation) on    
Change in net unrealized appreciation (depreciation) 3,968,794 2,587,264
ProShares UltraShort Silver [Member] | U.S. Government Agencies Short-term Debt Securities [Member]    
Net realized gain (loss) on    
Net realized gain (loss) 85  
Change in net unrealized appreciation (depreciation) on    
Change in net unrealized appreciation (depreciation) 747 185
ProShares UltraShort Yen [Member]    
Investment Income    
Interest 3,596 126,183
Expenses    
Management fee 66,553 84,437
Total expenses 66,553 84,437
Net investment income (loss) (62,957) 41,746
Net realized gain (loss) on    
Net realized gain (loss) 1,259,573 (506,520)
Change in net unrealized appreciation (depreciation) on    
Change in net unrealized appreciation (depreciation) 2,901,742 (697,069)
Net realized and unrealized gain (loss) 4,161,315 (1,203,589)
Net income (loss) 4,098,358 (1,161,843)
ProShares UltraShort Yen [Member] | Foreign Currency Forward Contracts [Member]    
Net realized gain (loss) on    
Net realized gain (loss) 1,259,573 (506,520)
Change in net unrealized appreciation (depreciation) on    
Change in net unrealized appreciation (depreciation) 2,900,888 (699,345)
ProShares UltraShort Yen [Member] | U.S. Government Agencies Short-term Debt Securities [Member]    
Change in net unrealized appreciation (depreciation) on    
Change in net unrealized appreciation (depreciation) 854 2,276
ProShares VIX Mid-Term Futures ETF [Member]    
Investment Income    
Interest 10,224 158,298
Expenses    
Management fee 178,080 94,284
Brokerage commissions 11,312 15,939
Brokerage fees 25,632 155
Total expenses 215,024 110,378
Net investment income (loss) (204,800) 47,920
Net realized gain (loss) on    
Net realized gain (loss) 3,539,316 7,756,525
Change in net unrealized appreciation (depreciation) on    
Change in net unrealized appreciation (depreciation) (8,275,522) 15,982,870
Net realized and unrealized gain (loss) (4,736,206) 23,739,395
Net income (loss) (4,941,006) 23,787,315
ProShares VIX Mid-Term Futures ETF [Member] | Futures Contracts [Member]    
Net realized gain (loss) on    
Net realized gain (loss) 3,539,316 7,756,525
Change in net unrealized appreciation (depreciation) on    
Change in net unrealized appreciation (depreciation) (8,276,672) 15,963,130
ProShares VIX Mid-Term Futures ETF [Member] | U.S. Government Agencies Short-term Debt Securities [Member]    
Change in net unrealized appreciation (depreciation) on    
Change in net unrealized appreciation (depreciation) 1,150 19,740
ProShares VIX Short-Term Futures ETF [Member]    
Investment Income    
Interest 38,460 960,075
Expenses    
Management fee 825,460 626,516
Brokerage commissions 172,658 184,760
Brokerage fees 265,146 4,774
Total expenses 1,263,264 816,050
Net investment income (loss) (1,224,804) 144,025
Net realized gain (loss) on    
Net realized gain (loss) (76,634,593) 325,737,788
Change in net unrealized appreciation (depreciation) on    
Change in net unrealized appreciation (depreciation) (53,430,854) 67,902,244
Net realized and unrealized gain (loss) (130,065,447) 393,640,032
Net income (loss) (131,290,251) 393,784,057
ProShares VIX Short-Term Futures ETF [Member] | Futures Contracts [Member]    
Net realized gain (loss) on    
Net realized gain (loss) (76,634,593) 325,737,788
Change in net unrealized appreciation (depreciation) on    
Change in net unrealized appreciation (depreciation) (53,438,914) 67,783,030
ProShares VIX Short-Term Futures ETF [Member] | U.S. Government Agencies Short-term Debt Securities [Member]    
Change in net unrealized appreciation (depreciation) on    
Change in net unrealized appreciation (depreciation) $ 8,060 $ 119,214
[1] The operations include the activity of ProShares UltraPro 3x Crude Oil ETF and ProShares UltraPro 3x Short Crude Oil ETF through March 27, 2020, the date liquidation was determined to be imminent.