v3.24.3

Statements of Operations - USD ($) | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2024 | Jun. 30, 2023 | Jun. 30, 2024 | Jun. 30, 2023
Investment Income |  |  |  |
Interest | $ 36,592,197 | $ 35,172,821 | $ 67,381,467 | $ 69,048,196
Expenses |  |  |  |
Management fee | 7,448,120 | 9,417,542 | 14,618,380 | 18,671,870
Brokerage commissions | 1,987,015 | 2,541,487 | 3,830,567 | 4,916,119
Futures account fees | 169,922 | 426,130 | 400,385 | 828,892
Total expenses | 9,605,057 | 12,385,159 | 18,849,332 | 24,416,881
Net investment income (loss) | 26,987,140 | 22,787,662 | 48,532,135 | 44,631,315
Net realized gain (loss) on |  |  |  |
Net realized gain (loss) | 340,305,548 | (1,030,834,546) | 140,335,396 | (2,028,937,766)
Change in net unrealized appreciation (depreciation) on |  |  |  |
Change in net unrealized appreciation (depreciation) | (127,143,015) | 426,320,433 | (180,306,004) | 244,613,184
Net realized and unrealized gain (loss) | 213,162,533 | (604,514,113) | (39,970,608) | (1,784,324,582)
Net income (loss) | 240,149,673 | (581,726,451) | 8,561,527 | (1,739,693,267)
Futures Contracts [Member] |  |  |  |
Net realized gain (loss) on |  |  |  |
Net realized gain (loss) | 192,957,311 | (903,140,314) | (95,441,709) | (1,989,000,881)
Change in net unrealized appreciation (depreciation) on |  |  |  |
Change in net unrealized appreciation (depreciation) | (68,861,582) | 370,415,259 | (169,234,257) | 337,853,836
Swap Agreements [Member] |  |  |  |
Net realized gain (loss) on |  |  |  |
Net realized gain (loss) | 147,613,685 | (127,144,869) | 237,098,199 | (36,920,176)
Change in net unrealized appreciation (depreciation) on |  |  |  |
Change in net unrealized appreciation (depreciation) | (58,891,791) | 53,364,477 | (13,314,347) | (96,981,521)
Foreign Currency Forward Contracts [Member] |  |  |  |
Net realized gain (loss) on |  |  |  |
Net realized gain (loss) | (266,644) | (367,022) | (1,392,235) | (2,820,838)
Change in net unrealized appreciation (depreciation) on |  |  |  |
Change in net unrealized appreciation (depreciation) | 550,617 | 2,274,360 | 2,368,057 | 3,691,623
Short-term U.S. Government and Agency Obligations [Member] |  |  |  |
Net realized gain (loss) on |  |  |  |
Net realized gain (loss) | 1,196 | (182,341) | 71,141 | (195,871)
Change in net unrealized appreciation (depreciation) on |  |  |  |
Change in net unrealized appreciation (depreciation) | 59,741 | 266,337 | (125,457) | 49,246
ProShares Short VIX Short-Term Futures ETF [Member] |  |  |  |
Investment Income |  |  |  |
Interest | 3,457,223 | 2,437,210 | 6,766,508 | 4,546,332
Expenses |  |  |  |
Management fee | 702,645 | 617,036 | 1,443,041 | 1,182,813
Brokerage commissions | 170,317 | 123,422 | 341,916 | 249,925
Total expenses | 872,962 | 740,458 | 1,784,957 | 1,432,738
Net investment income (loss) | 2,584,261 | 1,696,752 | 4,981,551 | 3,113,594
Net realized gain (loss) on |  |  |  |
Net realized gain (loss) | 26,761,918 | 65,202,331 | 55,276,535 | 94,806,479
Change in net unrealized appreciation (depreciation) on |  |  |  |
Change in net unrealized appreciation (depreciation) | (4,167,221) | 9,673,101 | (8,822,042) | 12,828,278
Net realized and unrealized gain (loss) | 22,594,697 | 74,875,432 | 46,454,493 | 107,634,757
Net income (loss) | 25,178,958 | 76,572,184 | 51,436,044 | 110,748,351
ProShares Short VIX Short-Term Futures ETF [Member] | Futures Contracts [Member] |  |  |  |
Net realized gain (loss) on |  |  |  |
Net realized gain (loss) | 26,761,918 | 65,228,142 | 55,258,866 | 94,832,290
Change in net unrealized appreciation (depreciation) on |  |  |  |
Change in net unrealized appreciation (depreciation) | (4,177,838) | 9,658,017 | (8,805,425) | 12,836,824
ProShares Short VIX Short-Term Futures ETF [Member] | Short-term U.S. Government and Agency Obligations [Member] |  |  |  |
Net realized gain (loss) on |  |  |  |
Net realized gain (loss) | 0 | (25,811) | 17,669 | (25,811)
Change in net unrealized appreciation (depreciation) on |  |  |  |
Change in net unrealized appreciation (depreciation) | 10,617 | 15,084 | (16,617) | (8,546)
ProShares Ultra Bloomberg Crude Oil [Member] |  |  |  |
Investment Income |  |  |  |
Interest | 6,506,199 | 5,878,092 | 11,516,649 | 11,886,000
Expenses |  |  |  |
Management fee | 1,344,787 | 1,744,998 | 2,821,804 | 3,619,616
Brokerage commissions | 42,976 | 94,303 | 104,780 | 188,647
Total expenses | 1,387,763 | 1,839,301 | 2,926,584 | 3,808,263
Net investment income (loss) | 5,118,436 | 4,038,791 | 8,590,065 | 8,077,737
Net realized gain (loss) on |  |  |  |
Net realized gain (loss) | 6,957,617 | (76,414,795) | 100,088,722 | 9,365,632
Change in net unrealized appreciation (depreciation) on |  |  |  |
Change in net unrealized appreciation (depreciation) | (738,826) | 45,539,157 | 54,345,016 | (92,671,285)
Net realized and unrealized gain (loss) | 6,218,791 | (30,875,638) | 154,433,738 | (83,305,653)
Net income (loss) | 11,337,227 | (26,836,847) | 163,023,803 | (75,227,916)
ProShares Ultra Bloomberg Crude Oil [Member] | Futures Contracts [Member] |  |  |  |
Net realized gain (loss) on |  |  |  |
Net realized gain (loss) | 11,985,445 | 29,371,809 | 28,452,282 | 40,205,833
Change in net unrealized appreciation (depreciation) on |  |  |  |
Change in net unrealized appreciation (depreciation) | (9,029,300) | (20,075,857) | 16,397,677 | (16,873,410)
ProShares Ultra Bloomberg Crude Oil [Member] | Swap Agreements [Member] |  |  |  |
Net realized gain (loss) on |  |  |  |
Net realized gain (loss) | (5,028,524) | (105,727,226) | 71,623,239 | (30,780,823)
Change in net unrealized appreciation (depreciation) on |  |  |  |
Change in net unrealized appreciation (depreciation) | 8,281,227 | 65,510,145 | 37,992,657 | (75,851,818)
ProShares Ultra Bloomberg Crude Oil [Member] | Short-term U.S. Government and Agency Obligations [Member] |  |  |  |
Net realized gain (loss) on |  |  |  |
Net realized gain (loss) | 696 | (59,378) | 13,201 | (59,378)
Change in net unrealized appreciation (depreciation) on |  |  |  |
Change in net unrealized appreciation (depreciation) | 9,247 | 104,869 | (45,318) | 53,943
ProShares Ultra Bloomberg Natural Gas [Member] |  |  |  |
Investment Income |  |  |  |
Interest | 6,418,687 | 8,866,705 | 12,870,827 | 17,825,228
Expenses |  |  |  |
Management fee | 1,323,880 | 2,588,571 | 2,773,307 | 4,916,981
Brokerage commissions | 785,377 | 1,145,371 | 1,488,469 | 2,098,150
Futures account fees | 53,176 | 211,785 | 142,161 | 399,478
Total expenses | 2,162,433 | 3,945,727 | 4,403,937 | 7,414,609
Net investment income (loss) | 4,256,254 | 4,920,978 | 8,466,890 | 10,410,619
Net realized gain (loss) on |  |  |  |
Net realized gain (loss) | 211,772,181 | (616,886,915) | (30,408,733) | (1,678,521,779)
Change in net unrealized appreciation (depreciation) on |  |  |  |
Change in net unrealized appreciation (depreciation) | (60,263,391) | 658,057,024 | (196,656,346) | 605,047,334
Net realized and unrealized gain (loss) | 151,508,790 | 41,170,109 | (227,065,079) | (1,073,474,445)
Net income (loss) | 155,765,044 | 46,091,087 | (218,598,189) | (1,063,063,826)
ProShares Ultra Bloomberg Natural Gas [Member] | Futures Contracts [Member] |  |  |  |
Net realized gain (loss) on |  |  |  |
Net realized gain (loss) | 211,772,181 | (539,203,219) | (30,408,733) | (1,639,994,302)
Change in net unrealized appreciation (depreciation) on |  |  |  |
Change in net unrealized appreciation (depreciation) | (60,263,391) | 572,850,724 | (196,642,739) | 558,949,406
ProShares Ultra Bloomberg Natural Gas [Member] | Swap Agreements [Member] |  |  |  |
Net realized gain (loss) on |  |  |  |
Net realized gain (loss) | 0 | (77,680,050) | 0 | (38,520,261)
Change in net unrealized appreciation (depreciation) on |  |  |  |
Change in net unrealized appreciation (depreciation) | 0 | 85,176,576 | 0 | 46,088,257
ProShares Ultra Bloomberg Natural Gas [Member] | Short-term U.S. Government and Agency Obligations [Member] |  |  |  |
Net realized gain (loss) on |  |  |  |
Net realized gain (loss) | 0 | (3,646) | 0 | (7,216)
Change in net unrealized appreciation (depreciation) on |  |  |  |
Change in net unrealized appreciation (depreciation) | 0 | 29,724 | (13,607) | 9,671
ProShares Ultra Euro [Member] |  |  |  |
Investment Income |  |  |  |
Interest | 70,817 | 88,182 | 149,303 | 185,419
Expenses |  |  |  |
Management fee | 13,944 | 19,851 | 29,879 | 44,097
Total expenses | 13,944 | 19,851 | 29,879 | 44,097
Net investment income (loss) | 56,873 | 68,331 | 119,424 | 141,322
Net realized gain (loss) on |  |  |  |
Net realized gain (loss) | (219,350) | 78,291 | (74,776) | 358,570
Change in net unrealized appreciation (depreciation) on |  |  |  |
Change in net unrealized appreciation (depreciation) | 62,167 | (79,023) | (447,347) | (175,968)
Net realized and unrealized gain (loss) | (157,183) | (732) | (522,123) | 182,602
Net income (loss) | (100,310) | 67,599 | (402,699) | 323,924
ProShares Ultra Euro [Member] | Foreign Currency Forward Contracts [Member] |  |  |  |
Net realized gain (loss) on |  |  |  |
Net realized gain (loss) | (219,350) | 78,291 | (74,776) | 358,570
Change in net unrealized appreciation (depreciation) on |  |  |  |
Change in net unrealized appreciation (depreciation) | 62,167 | (79,023) | (447,347) | (175,968)
ProShares Ultra Gold [Member] |  |  |  |
Investment Income |  |  |  |
Interest | 2,819,359 | 1,983,196 | 4,833,274 | 3,632,210
Expenses |  |  |  |
Management fee | 546,388 | 474,261 | 982,991 | 901,375
Brokerage commissions | 8,123 | 6,925 | 17,996 | 15,540
Total expenses | 554,511 | 481,186 | 1,000,987 | 916,915
Net investment income (loss) | 2,264,848 | 1,502,010 | 3,832,287 | 2,715,295
Net realized gain (loss) on |  |  |  |
Net realized gain (loss) | 31,567,821 | 17,168,107 | 50,042,103 | 27,968,003
Change in net unrealized appreciation (depreciation) on |  |  |  |
Change in net unrealized appreciation (depreciation) | (17,226,689) | (32,854,842) | (14,505,497) | (22,166,463)
Net realized and unrealized gain (loss) | 14,341,132 | (15,686,735) | 35,536,606 | 5,801,540
Net income (loss) | 16,605,980 | (14,184,725) | 39,368,893 | 8,516,835
ProShares Ultra Gold [Member] | Futures Contracts [Member] |  |  |  |
Net realized gain (loss) on |  |  |  |
Net realized gain (loss) | 7,565,606 | 5,160,588 | 14,530,658 | 7,921,167
Change in net unrealized appreciation (depreciation) on |  |  |  |
Change in net unrealized appreciation (depreciation) | (3,144,847) | (10,482,142) | (4,863,967) | (8,627,819)
ProShares Ultra Gold [Member] | Swap Agreements [Member] |  |  |  |
Net realized gain (loss) on |  |  |  |
Net realized gain (loss) | 24,002,215 | 12,035,981 | 35,508,434 | 20,075,298
Change in net unrealized appreciation (depreciation) on |  |  |  |
Change in net unrealized appreciation (depreciation) | (14,087,684) | (22,406,342) | (9,631,250) | (13,549,549)
ProShares Ultra Gold [Member] | Short-term U.S. Government and Agency Obligations [Member] |  |  |  |
Net realized gain (loss) on |  |  |  |
Net realized gain (loss) | 0 | (28,462) | 3,011 | (28,462)
Change in net unrealized appreciation (depreciation) on |  |  |  |
Change in net unrealized appreciation (depreciation) | 5,842 | 33,642 | (10,280) | 10,905
ProShares Ultra Silver [Member] |  |  |  |
Investment Income |  |  |  |
Interest | 6,245,723 | 3,701,182 | 9,880,580 | 7,075,578
Expenses |  |  |  |
Management fee | 1,244,817 | 976,505 | 2,118,718 | 1,848,064
Brokerage commissions | 56,180 | 47,075 | 84,222 | 73,637
Total expenses | 1,300,997 | 1,023,580 | 2,202,940 | 1,921,701
Net investment income (loss) | 4,944,726 | 2,677,602 | 7,677,640 | 5,153,877
Net realized gain (loss) on |  |  |  |
Net realized gain (loss) | 220,680,441 | 64,615,443 | 216,214,526 | 35,871,579
Change in net unrealized appreciation (depreciation) on |  |  |  |
Change in net unrealized appreciation (depreciation) | (87,279,257) | (119,017,342) | (65,670,658) | (96,665,222)
Net realized and unrealized gain (loss) | 133,401,184 | (54,401,899) | 150,543,868 | (60,793,643)
Net income (loss) | 138,345,910 | (51,724,297) | 158,221,508 | (55,639,766)
ProShares Ultra Silver [Member] | Futures Contracts [Member] |  |  |  |
Net realized gain (loss) on |  |  |  |
Net realized gain (loss) | 81,641,058 | 17,097,790 | 76,002,276 | 20,739,536
Change in net unrealized appreciation (depreciation) on |  |  |  |
Change in net unrealized appreciation (depreciation) | (29,355,888) | (38,652,527) | (19,075,042) | (39,404,490)
ProShares Ultra Silver [Member] | Swap Agreements [Member] |  |  |  |
Net realized gain (loss) on |  |  |  |
Net realized gain (loss) | 139,039,383 | 47,564,510 | 140,207,453 | 15,178,900
Change in net unrealized appreciation (depreciation) on |  |  |  |
Change in net unrealized appreciation (depreciation) | (57,934,788) | (80,409,195) | (46,575,112) | (57,269,574)
ProShares Ultra Silver [Member] | Short-term U.S. Government and Agency Obligations [Member] |  |  |  |
Net realized gain (loss) on |  |  |  |
Net realized gain (loss) | 0 | (46,857) | 4,797 | (46,857)
Change in net unrealized appreciation (depreciation) on |  |  |  |
Change in net unrealized appreciation (depreciation) | 11,419 | 44,380 | (20,504) | 8,842
ProShares Ultra VIX Short-Term Futures ETF [Member] |  |  |  |
Investment Income |  |  |  |
Interest | 2,335,823 | 4,750,595 | 5,094,065 | 9,167,250
Expenses |  |  |  |
Management fee | 553,814 | 1,330,081 | 1,221,345 | 2,703,851
Brokerage commissions | 454,606 | 712,511 | 941,152 | 1,490,212
Futures account fees | 63,964 | 126,999 | 150,134 | 250,360
Total expenses | 1,072,384 | 2,169,591 | 2,312,631 | 4,444,423
Net investment income (loss) | 1,263,439 | 2,581,004 | 2,781,434 | 4,722,827
Net realized gain (loss) on |  |  |  |
Net realized gain (loss) | (57,412,686) | (426,300,356) | (148,405,278) | (608,541,564)
Change in net unrealized appreciation (depreciation) on |  |  |  |
Change in net unrealized appreciation (depreciation) | 11,698,440 | (45,315,177) | 24,979,009 | (43,277,650)
Net realized and unrealized gain (loss) | (45,714,246) | (471,615,533) | (123,426,269) | (651,819,214)
Net income (loss) | (44,450,807) | (469,034,529) | (120,644,835) | (647,096,387)
ProShares Ultra VIX Short-Term Futures ETF [Member] | Futures Contracts [Member] |  |  |  |
Net realized gain (loss) on |  |  |  |
Net realized gain (loss) | (57,413,186) | (426,304,544) | (148,416,415) | (608,537,974)
Change in net unrealized appreciation (depreciation) on |  |  |  |
Change in net unrealized appreciation (depreciation) | 11,693,863 | (45,320,517) | 24,978,991 | (43,274,267)
ProShares Ultra VIX Short-Term Futures ETF [Member] | Short-term U.S. Government and Agency Obligations [Member] |  |  |  |
Net realized gain (loss) on |  |  |  |
Net realized gain (loss) | 500 | 4,188 | 11,137 | (3,590)
Change in net unrealized appreciation (depreciation) on |  |  |  |
Change in net unrealized appreciation (depreciation) | 4,577 | 5,340 | 18 | (3,383)
ProShares Ultra Yen [Member] |  |  |  |
Investment Income |  |  |  |
Interest | 483,557 | 114,980 | 853,811 | 235,098
Expenses |  |  |  |
Management fee | 99,372 | 25,330 | 176,608 | 55,890
Total expenses | 99,372 | 25,330 | 176,608 | 55,890
Net investment income (loss) | 384,185 | 89,650 | 677,203 | 179,208
Net realized gain (loss) on |  |  |  |
Net realized gain (loss) | (5,365,623) | (770,142) | (7,397,198) | (1,068,950)
Change in net unrealized appreciation (depreciation) on |  |  |  |
Change in net unrealized appreciation (depreciation) | (842,412) | (1,348,109) | (4,421,343) | (1,842,176)
Net realized and unrealized gain (loss) | (6,208,035) | (2,118,251) | (11,818,541) | (2,911,126)
Net income (loss) | (5,823,850) | (2,028,601) | (11,141,338) | (2,731,918)
ProShares Ultra Yen [Member] | Foreign Currency Forward Contracts [Member] |  |  |  |
Net realized gain (loss) on |  |  |  |
Net realized gain (loss) | (5,365,623) | (770,142) | (7,397,198) | (1,068,950)
Change in net unrealized appreciation (depreciation) on |  |  |  |
Change in net unrealized appreciation (depreciation) | (842,412) | (1,348,109) | (4,421,343) | (1,842,176)
ProShares UltraShort Bloomberg Crude Oil [Member] |  |  |  |
Investment Income |  |  |  |
Interest | 2,290,280 | 1,560,028 | 4,533,047 | 3,563,237
Expenses |  |  |  |
Management fee | 440,755 | 359,177 | 892,340 | 844,057
Brokerage commissions | 43,839 | 60,079 | 97,800 | 125,836
Total expenses | 484,594 | 419,256 | 990,140 | 969,893
Net investment income (loss) | 1,805,686 | 1,140,772 | 3,542,907 | 2,593,344
Net realized gain (loss) on |  |  |  |
Net realized gain (loss) | (143,424) | 28,034,524 | (12,652,246) | 55,649,291
Change in net unrealized appreciation (depreciation) on |  |  |  |
Change in net unrealized appreciation (depreciation) | (1,552,095) | (8,216,608) | (36,001,228) | 2,739,622
Net realized and unrealized gain (loss) | (1,695,519) | 19,817,916 | (48,653,474) | 58,388,913
Net income (loss) | 110,167 | 20,958,688 | (45,110,567) | 60,982,257
ProShares UltraShort Bloomberg Crude Oil [Member] | Futures Contracts [Member] |  |  |  |
Net realized gain (loss) on |  |  |  |
Net realized gain (loss) | (143,424) | 28,046,795 | (12,659,025) | 55,661,074
Change in net unrealized appreciation (depreciation) on |  |  |  |
Change in net unrealized appreciation (depreciation) | (1,560,618) | (8,229,852) | (35,992,048) | 2,741,263
ProShares UltraShort Bloomberg Crude Oil [Member] | Short-term U.S. Government and Agency Obligations [Member] |  |  |  |
Net realized gain (loss) on |  |  |  |
Net realized gain (loss) | 0 | (12,271) | 6,779 | (11,783)
Change in net unrealized appreciation (depreciation) on |  |  |  |
Change in net unrealized appreciation (depreciation) | 8,523 | 13,244 | (9,180) | (1,641)
ProShares UltraShort Bloomberg Natural Gas [Member] |  |  |  |
Investment Income |  |  |  |
Interest | 1,577,496 | 1,344,889 | 2,924,574 | 2,531,641
Expenses |  |  |  |
Management fee | 310,060 | 302,274 | 572,504 | 599,136
Brokerage commissions | 304,998 | 233,647 | 566,252 | 443,288
Futures account fees | 10,978 | 26,758 | 27,011 | 56,367
Total expenses | 626,036 | 562,679 | 1,165,767 | 1,098,791
Net investment income (loss) | 951,460 | 782,210 | 1,758,807 | 1,432,850
Net realized gain (loss) on |  |  |  |
Net realized gain (loss) | (44,563,292) | 48,737,843 | 89,322 | 232,143,809
Change in net unrealized appreciation (depreciation) on |  |  |  |
Change in net unrealized appreciation (depreciation) | 20,550,559 | (61,250,100) | 44,377,047 | (106,209,898)
Net realized and unrealized gain (loss) | (24,012,733) | (12,512,257) | 44,466,369 | 125,933,911
Net income (loss) | (23,061,273) | (11,730,047) | 46,225,176 | 127,366,761
ProShares UltraShort Bloomberg Natural Gas [Member] | Futures Contracts [Member] |  |  |  |
Net realized gain (loss) on |  |  |  |
Net realized gain (loss) | (44,563,292) | 48,736,428 | 91,065 | 232,145,072
Change in net unrealized appreciation (depreciation) on |  |  |  |
Change in net unrealized appreciation (depreciation) | 20,547,016 | (61,246,927) | 44,377,650 | (106,199,730)
ProShares UltraShort Bloomberg Natural Gas [Member] | Short-term U.S. Government and Agency Obligations [Member] |  |  |  |
Net realized gain (loss) on |  |  |  |
Net realized gain (loss) | 0 | 1,415 | (1,743) | (1,263)
Change in net unrealized appreciation (depreciation) on |  |  |  |
Change in net unrealized appreciation (depreciation) | 3,543 | (3,173) | (603) | (10,168)
ProShares UltraShort Euro [Member] |  |  |  |
Investment Income |  |  |  |
Interest | 429,872 | 593,746 | 888,189 | 1,240,866
Expenses |  |  |  |
Management fee | 90,978 | 131,101 | 186,228 | 292,669
Total expenses | 90,978 | 131,101 | 186,228 | 292,669
Net investment income (loss) | 338,894 | 462,645 | 701,961 | 948,197
Net realized gain (loss) on |  |  |  |
Net realized gain (loss) | 900,760 | (1,045,942) | (38,460) | (2,453,253)
Change in net unrealized appreciation (depreciation) on |  |  |  |
Change in net unrealized appreciation (depreciation) | (199,005) | 556,469 | 2,768,728 | 697,680
Net realized and unrealized gain (loss) | 701,755 | (489,473) | 2,730,268 | (1,755,573)
Net income (loss) | 1,040,649 | (26,828) | 3,432,229 | (807,376)
ProShares UltraShort Euro [Member] | Foreign Currency Forward Contracts [Member] |  |  |  |
Net realized gain (loss) on |  |  |  |
Net realized gain (loss) | 900,760 | (1,045,942) | (43,101) | (2,453,253)
Change in net unrealized appreciation (depreciation) on |  |  |  |
Change in net unrealized appreciation (depreciation) | (199,005) | 556,469 | 2,768,728 | 702,482
ProShares UltraShort Euro [Member] | Short-term U.S. Government and Agency Obligations [Member] |  |  |  |
Net realized gain (loss) on |  |  |  |
Net realized gain (loss) | 0 | 0 | 4,641 | 0
Change in net unrealized appreciation (depreciation) on |  |  |  |
Change in net unrealized appreciation (depreciation) | 0 | 0 | 0 | (4,802)
ProShares UltraShort Gold [Member] |  |  |  |
Investment Income |  |  |  |
Interest | 176,727 | 184,052 | 319,930 | 316,614
Expenses |  |  |  |
Management fee | 39,309 | 42,869 | 71,710 | 79,242
Brokerage commissions | 1,283 | 1,605 | 2,218 | 2,966
Total expenses | 40,592 | 44,474 | 73,928 | 82,208
Net investment income (loss) | 136,135 | 139,578 | 246,002 | 234,406
Net realized gain (loss) on |  |  |  |
Net realized gain (loss) | (2,516,474) | (1,553,151) | (3,914,287) | (2,584,032)
Change in net unrealized appreciation (depreciation) on |  |  |  |
Change in net unrealized appreciation (depreciation) | 1,264,436 | 2,758,921 | 919,857 | 2,103,219
Net realized and unrealized gain (loss) | (1,252,038) | 1,205,770 | (2,994,430) | (480,813)
Net income (loss) | (1,115,903) | 1,345,348 | (2,748,428) | (246,407)
ProShares UltraShort Gold [Member] | Futures Contracts [Member] |  |  |  |
Net realized gain (loss) on |  |  |  |
Net realized gain (loss) | (976,285) | (562,109) | (1,626,248) | (676,159)
Change in net unrealized appreciation (depreciation) on |  |  |  |
Change in net unrealized appreciation (depreciation) | 374,155 | 1,132,962 | 311,336 | 1,069,691
ProShares UltraShort Gold [Member] | Swap Agreements [Member] |  |  |  |
Net realized gain (loss) on |  |  |  |
Net realized gain (loss) | (1,540,189) | (991,042) | (2,288,039) | (1,907,873)
Change in net unrealized appreciation (depreciation) on |  |  |  |
Change in net unrealized appreciation (depreciation) | 890,281 | 1,625,959 | 608,521 | 1,033,528
ProShares UltraShort Silver [Member] |  |  |  |
Investment Income |  |  |  |
Interest | 597,421 | 323,734 | 978,854 | 523,812
Expenses |  |  |  |
Management fee | 139,041 | 82,417 | 230,179 | 142,585
Brokerage commissions | 13,863 | 8,958 | 19,887 | 14,661
Total expenses | 152,904 | 91,375 | 250,066 | 157,246
Net investment income (loss) | 444,517 | 232,359 | 728,788 | 366,566
Net realized gain (loss) on |  |  |  |
Net realized gain (loss) | (16,070,138) | 1,112,690 | (10,290,118) | 3,826,313
Change in net unrealized appreciation (depreciation) on |  |  |  |
Change in net unrealized appreciation (depreciation) | 4,902,824 | 5,650,294 | 3,484,222 | 4,467,058
Net realized and unrealized gain (loss) | (11,167,314) | 6,762,984 | (6,805,896) | 8,293,371
Net income (loss) | (10,722,797) | 6,995,343 | (6,077,108) | 8,659,937
ProShares UltraShort Silver [Member] | Futures Contracts [Member] |  |  |  |
Net realized gain (loss) on |  |  |  |
Net realized gain (loss) | (7,210,938) | 3,460,638 | (2,337,230) | 4,792,636
Change in net unrealized appreciation (depreciation) on |  |  |  |
Change in net unrealized appreciation (depreciation) | 943,651 | 1,782,960 | (806,615) | 1,899,423
ProShares UltraShort Silver [Member] | Swap Agreements [Member] |  |  |  |
Net realized gain (loss) on |  |  |  |
Net realized gain (loss) | (8,859,200) | (2,347,042) | (7,952,888) | (965,417)
Change in net unrealized appreciation (depreciation) on |  |  |  |
Change in net unrealized appreciation (depreciation) | 3,959,173 | 3,867,334 | 4,290,837 | 2,567,635
ProShares UltraShort Silver [Member] | Short-term U.S. Government and Agency Obligations [Member] |  |  |  |
Net realized gain (loss) on |  |  |  |
Net realized gain (loss) | 0 | (906) | 0 | (906)
ProShares UltraShort Yen [Member] |  |  |  |
Investment Income |  |  |  |
Interest | 456,243 | 255,354 | 771,660 | 459,554
Expenses |  |  |  |
Management fee | 96,949 | 58,179 | 163,082 | 108,991
Total expenses | 96,949 | 58,179 | 163,082 | 108,991
Net investment income (loss) | 359,294 | 197,175 | 608,578 | 350,563
Net realized gain (loss) on |  |  |  |
Net realized gain (loss) | 4,417,569 | 1,370,771 | 6,126,381 | 342,795
Change in net unrealized appreciation (depreciation) on |  |  |  |
Change in net unrealized appreciation (depreciation) | 1,529,867 | 3,145,023 | 4,468,019 | 5,004,524
Net realized and unrealized gain (loss) | 5,947,436 | 4,515,794 | 10,594,400 | 5,347,319
Net income (loss) | 6,306,730 | 4,712,969 | 11,202,978 | 5,697,882
ProShares UltraShort Yen [Member] | Foreign Currency Forward Contracts [Member] |  |  |  |
Net realized gain (loss) on |  |  |  |
Net realized gain (loss) | 4,417,569 | 1,370,771 | 6,122,840 | 342,795
Change in net unrealized appreciation (depreciation) on |  |  |  |
Change in net unrealized appreciation (depreciation) | 1,529,867 | 3,145,023 | 4,468,019 | 5,007,285
ProShares UltraShort Yen [Member] | Short-term U.S. Government and Agency Obligations [Member] |  |  |  |
Net realized gain (loss) on |  |  |  |
Net realized gain (loss) | 0 | 0 | 3,541 | 0
Change in net unrealized appreciation (depreciation) on |  |  |  |
Change in net unrealized appreciation (depreciation) | 0 | 0 | 0 | (2,761)
ProShares VIX Mid-Term Futures ETF [Member] |  |  |  |
Investment Income |  |  |  |
Interest | 1,106,849 | 650,585 | 1,622,013 | 1,298,505
Expenses |  |  |  |
Management fee | 191,320 | 134,066 | 288,207 | 284,189
Brokerage commissions | 66,049 | 12,200 | 86,212 | 21,369
Futures account fees | 10,537 | 11,856 | 16,541 | 23,296
Total expenses | 267,906 | 158,122 | 390,960 | 328,854
Net investment income (loss) | 838,943 | 492,463 | 1,231,053 | 969,651
Net realized gain (loss) on |  |  |  |
Net realized gain (loss) | (8,949,418) | (6,943,333) | (15,054,609) | (22,764,053)
Change in net unrealized appreciation (depreciation) on |  |  |  |
Change in net unrealized appreciation (depreciation) | 1,095,379 | (9,675,102) | 3,885,170 | (5,092,642)
Net realized and unrealized gain (loss) | (7,854,039) | (16,618,435) | (11,169,439) | (27,856,695)
Net income (loss) | (7,015,096) | (16,125,972) | (9,938,386) | (26,887,044)
ProShares VIX Mid-Term Futures ETF [Member] | Futures Contracts [Member] |  |  |  |
Net realized gain (loss) on |  |  |  |
Net realized gain (loss) | (8,949,418) | (6,943,333) | (15,057,887) | (22,764,053)
Change in net unrealized appreciation (depreciation) on |  |  |  |
Change in net unrealized appreciation (depreciation) | 1,092,860 | (9,677,526) | 3,882,651 | (5,086,991)
ProShares VIX Mid-Term Futures ETF [Member] | Short-term U.S. Government and Agency Obligations [Member] |  |  |  |
Net realized gain (loss) on |  |  |  |
Net realized gain (loss) | 0 | 0 | 3,278 | 0
Change in net unrealized appreciation (depreciation) on |  |  |  |
Change in net unrealized appreciation (depreciation) | 2,519 | 2,424 | 2,519 | (5,651)
ProShares VIX Short-Term Futures ETF [Member] |  |  |  |
Investment Income |  |  |  |
Interest | 1,619,921 | 2,440,291 | 3,378,183 | 4,560,852
Expenses |  |  |  |
Management fee | 310,061 | 530,826 | 646,437 | 1,048,314
Brokerage commissions | 39,404 | 95,391 | 79,663 | 191,888
Futures account fees | 31,267 | 48,732 | 64,538 | 99,391
Total expenses | 380,732 | 674,949 | 790,638 | 1,339,593
Net investment income (loss) | 1,239,189 | 1,765,342 | 2,587,545 | 3,221,259
Net realized gain (loss) on |  |  |  |
Net realized gain (loss) | (27,512,354) | (127,239,912) | (59,266,488) | (173,336,606)
Change in net unrealized appreciation (depreciation) on |  |  |  |
Change in net unrealized appreciation (depreciation) | 4,022,209 | (21,303,253) | 6,991,389 | (20,173,227)
Net realized and unrealized gain (loss) | (23,490,145) | (148,543,165) | (52,275,099) | (193,509,833)
Net income (loss) | (22,250,956) | (146,777,823) | (49,687,554) | (190,288,574)
ProShares VIX Short-Term Futures ETF [Member] | Futures Contracts [Member] |  |  |  |
Net realized gain (loss) on |  |  |  |
Net realized gain (loss) | (27,512,354) | (127,229,299) | (59,271,318) | (173,326,001)
Change in net unrealized appreciation (depreciation) on |  |  |  |
Change in net unrealized appreciation (depreciation) | 4,018,755 | (21,324,056) | 7,003,274 | (20,176,064)
ProShares VIX Short-Term Futures ETF [Member] | Short-term U.S. Government and Agency Obligations [Member] |  |  |  |
Net realized gain (loss) on |  |  |  |
Net realized gain (loss) | 0 | (10,613) | 4,830 | (10,605)
Change in net unrealized appreciation (depreciation) on |  |  |  |
Change in net unrealized appreciation (depreciation) | $ 3,454 | $ 20,803 | $ (11,885) | $ 2,837

X
- Definition Futures account fees. + References No definition available. + Details
Name: | ck0001415311_FuturesAccountFees
Namespace Prefix: | ck0001415311_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Investments owned unrealized appreciation depreciation net. + References No definition available. + Details
Name: | ck0001415311_InvestmentsOwnedUnrealizedAppreciationDepreciationNetAbstract
Namespace Prefix: | ck0001415311_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of realized and unrealized gain (loss) on investment. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 220 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03(9)(a)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147483621/220-10-S99-2 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 220 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03(7)(c)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147483621/220-10-S99-2 Reference 3: http://www.xbrl.org/2003/role/recommendedDisclosureRef -Topic 230 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 28 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482740/230-10-45-28 + Details
Name: | us-gaap_GainLossOnInvestments
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount before accretion (amortization) of purchase discount (premium) of interest income on nonoperating securities. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 280 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 22 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482810/280-10-50-22 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Topic 280 -SubTopic 10 -Name Accounting Standards Codification -Section 55 -Paragraph 48 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482785/280-10-55-48 Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 220 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03(7)(b)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147483621/220-10-S99-2 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 270 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (i) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482964/270-10-50-1 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Topic 280 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 32 -Subparagraph (ee) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482810/280-10-50-32 + Details
Name: | us-gaap_InvestmentIncomeInterest
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount after accretion (amortization) of discount (premium), and investment expense, of interest income and dividend income on nonoperating securities. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 220 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03(8)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147483621/220-10-S99-2 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 220 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03(7)(a)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147483621/220-10-S99-2 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 220 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03(7)(b)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147483621/220-10-S99-2 + Details
Name: | us-gaap_InvestmentIncomeNet
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_InvestmentIncomeNetAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of expense for investment management fee, including, but not limited to, expense in connection with research, selection, supervision, and custody of investment. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 946 -SubTopic 830 -Name Accounting Standards Codification -Section 55 -Paragraph 10 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479168/946-830-55-10 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 946 -SubTopic 220 -Name Accounting Standards Codification -Section 45 -Paragraph 3 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479105/946-220-45-3 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 946 -SubTopic 220 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.6-07(2)(a)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479134/946-220-S99-1 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 850 -SubTopic 10 -Section 50 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147483326/850-10-50-1 + Details
Name: | us-gaap_ManagementFeeExpense
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The portion of profit or loss for the period, net of income taxes, which is attributable to the parent. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 250 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Publisher FASB -URI https://asc.fasb.org/1943274/2147483443/250-10-50-6 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 250 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 9 -Publisher FASB -URI https://asc.fasb.org/1943274/2147483443/250-10-50-9 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 805 -SubTopic 60 -Name Accounting Standards Codification -Section 65 -Paragraph 1 -Subparagraph (g) -Publisher FASB -URI https://asc.fasb.org/1943274/2147476176/805-60-65-1 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 740 -SubTopic 323 -Name Accounting Standards Codification -Section 65 -Paragraph 2 -Subparagraph (g)(3) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478666/740-323-65-2 Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 220 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03(20)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147483621/220-10-S99-2 Reference 6: http://www.xbrl.org/2003/role/disclosureRef -Topic 235 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08(g)(1)(ii)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480678/235-10-S99-1 Reference 7: http://www.xbrl.org/2003/role/disclosureRef -Topic 323 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481687/323-10-50-3 Reference 8: http://www.xbrl.org/2003/role/disclosureRef -Topic 825 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 28 -Subparagraph (f) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482907/825-10-50-28 Reference 9: http://www.xbrl.org/2003/role/disclosureRef -Topic 220 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482765/220-10-50-6 Reference 10: http://www.xbrl.org/2003/role/disclosureRef -Topic 250 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Publisher FASB -URI https://asc.fasb.org/1943274/2147483443/250-10-50-3 Reference 11: http://www.xbrl.org/2003/role/disclosureRef -Topic 250 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (b)(2) -Publisher FASB -URI https://asc.fasb.org/1943274/2147483443/250-10-50-1 Reference 12: http://www.xbrl.org/2003/role/disclosureRef -Topic 815 -SubTopic 40 -Name Accounting Standards Codification -Section 65 -Paragraph 1 -Subparagraph (f) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480175/815-40-65-1 Reference 13: http://www.xbrl.org/2003/role/disclosureRef -Topic 250 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 8 -Publisher FASB -URI https://asc.fasb.org/1943274/2147483443/250-10-50-8 Reference 14: http://www.xbrl.org/2003/role/disclosureRef -Topic 250 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 11 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147483443/250-10-50-11 Reference 15: http://www.xbrl.org/2003/role/disclosureRef -Topic 250 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 11 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147483443/250-10-50-11 Reference 16: http://www.xbrl.org/2003/role/disclosureRef -Topic 250 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 4 -Publisher FASB -URI https://asc.fasb.org/1943274/2147483443/250-10-50-4 Reference 17: http://www.xbrl.org/2003/role/exampleRef -Topic 946 -SubTopic 830 -Name Accounting Standards Codification -Section 55 -Paragraph 10 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479168/946-830-55-10 Reference 18: http://www.xbrl.org/2003/role/disclosureRef -Topic 946 -SubTopic 220 -Name Accounting Standards Codification -Section 45 -Paragraph 7 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479105/946-220-45-7 Reference 19: http://www.xbrl.org/2003/role/disclosureRef -Topic 944 -SubTopic 220 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-04(18)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147477250/944-220-S99-1 Reference 20: http://www.xbrl.org/2003/role/disclosureRef -Topic 946 -SubTopic 220 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.6-07(9)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479134/946-220-S99-1 Reference 21: http://www.xbrl.org/2003/role/disclosureRef -Topic 946 -SubTopic 220 -Name Accounting Standards Codification -Section S99 -Paragraph 3 -Subparagraph (SX 210.6-09(1)(d)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479134/946-220-S99-3 Reference 22: http://www.xbrl.org/2003/role/disclosureRef -Topic 470 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1A -Subparagraph (SX 210.13-01(a)(4)(i)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480097/470-10-S99-1A Reference 23: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 470 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1A -Subparagraph (SX 210.13-01(a)(4)(ii)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480097/470-10-S99-1A Reference 24: http://www.xbrl.org/2003/role/disclosureRef -Topic 470 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1A -Subparagraph (SX 210.13-01(a)(4)(iii)(A)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480097/470-10-S99-1A Reference 25: http://www.xbrl.org/2003/role/disclosureRef -Topic 470 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1A -Subparagraph (SX 210.13-01(a)(4)(iv)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480097/470-10-S99-1A Reference 26: http://www.xbrl.org/2003/role/disclosureRef -Topic 470 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1A -Subparagraph (SX 210.13-01(a)(5)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480097/470-10-S99-1A Reference 27: http://www.xbrl.org/2003/role/disclosureRef -Topic 470 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1B -Subparagraph (SX 210.13-02(a)(4)(i)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480097/470-10-S99-1B Reference 28: http://www.xbrl.org/2003/role/disclosureRef -Topic 470 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1B -Subparagraph (SX 210.13-02(a)(4)(iii)(A)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480097/470-10-S99-1B Reference 29: http://www.xbrl.org/2003/role/disclosureRef -Topic 470 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1B -Subparagraph (SX 210.13-02(a)(4)(iii)(B)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480097/470-10-S99-1B Reference 30: http://www.xbrl.org/2003/role/disclosureRef -Topic 470 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1B -Subparagraph (SX 210.13-02(a)(4)(iv)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480097/470-10-S99-1B Reference 31: http://www.xbrl.org/2003/role/disclosureRef -Topic 470 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1B -Subparagraph (SX 210.13-02(a)(5)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480097/470-10-S99-1B Reference 32: http://www.xbrl.org/2003/role/disclosureRef -Topic 260 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 60B -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482689/260-10-45-60B Reference 33: http://www.xbrl.org/2003/role/disclosureRef -Topic 205 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 7 -Publisher FASB -URI https://asc.fasb.org/1943274/2147483499/205-20-50-7 Reference 34: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 230 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 28 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482740/230-10-45-28 Reference 35: http://www.xbrl.org/2003/role/disclosureRef -Topic 220 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 1A -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482790/220-10-45-1A Reference 36: http://www.xbrl.org/2003/role/disclosureRef -Topic 220 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 1B -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482790/220-10-45-1B Reference 37: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 942 -SubTopic 220 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-04(22)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478524/942-220-S99-1 + Details
Name: | us-gaap_NetIncomeLoss
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of fees incurred for commissions on mutual funds and insurance products. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 942 -SubTopic 220 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-04(14)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478524/942-220-S99-1 + Details
Name: | us-gaap_NoninterestExpenseCommissionExpense
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Generally recurring costs associated with normal operations except for the portion of these expenses which can be clearly related to production and included in cost of sales or services. Includes selling, general and administrative expense. + References No definition available. + Details
Name: | us-gaap_OperatingExpenses
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_OperatingExpensesAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of realized gain (loss) on investment. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 944 -SubTopic 220 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-04(3)(a)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147477250/944-220-S99-1 + Details
Name: | us-gaap_RealizedInvestmentGainsLosses
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_RealizedInvestmentGainsLossesAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of unrealized gain (loss) on investment. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 45 -Paragraph 28 -Subparagraph (b) -SubTopic 10 -Topic 230 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482740/230-10-45-28 + Details
Name: | us-gaap_UnrealizedGainLossOnInvestments
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=us-gaap_FutureMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=us-gaap_SwapMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=us-gaap_ForeignExchangeForwardMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=us-gaap_USGovernmentAgenciesShorttermDebtSecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=ck0001415311_ProsharesShortVixShortTermFuturesEtfMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=ck0001415311_ProsharesUltraBloombergCrudeOilMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=ck0001415311_ProsharesUltraBloombergNaturalGasMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=ck0001415311_ProsharesUltraEuroMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=ck0001415311_ProsharesUltraGoldMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=ck0001415311_ProsharesUltraSilverMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=ck0001415311_ProsharesUltraVixShortTermFuturesEtfMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=ck0001415311_ProsharesUltraYenMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=ck0001415311_ProsharesUltraShortBloombergCrudeOilMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=ck0001415311_ProsharesUltraShortBloombergNaturalGasMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=ck0001415311_ProsharesUltraShortEuroMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=ck0001415311_ProsharesUltraShortGoldMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=ck0001415311_ProsharesUltraShortSilverMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=ck0001415311_ProsharesUltraShortYenMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=ck0001415311_ProsharesVixMidTermFuturesEtfMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=ck0001415311_ProsharesVixShortTermFuturesEtfMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |