v3.24.3

Investments - Effect of Derivative Instruments on Statements of Operations (Detail) - USD ($) | 3 Months Ended | 6 Months Ended
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Jun. 30, 2024 | Jun. 30, 2023 | Jun. 30, 2024 | Jun. 30, 2023
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |
Realized Gain (Loss) on Derivatives Recognized in Income | $ 340,305,548 | $ (1,030,834,546) | $ 140,335,396 | $ (2,028,937,766)
Change in Unrealized Appreciation (Depreciation) on Derivatives Recognized in Income | (127,143,015) | 426,320,433 | (180,306,004) | 244,613,184
Not Designated as Hedging Instrument [Member] |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |
Realized Gain (Loss) on Derivatives Recognized in Income | 340,304,352 | (1,030,652,205) | 140,264,255 | (2,028,741,895)
Change in Unrealized Appreciation (Depreciation) on Derivatives Recognized in Income | (127,202,756) | 426,054,096 | (180,180,547) | 244,563,938
ProShares Short VIX Short-Term Futures ETF [Member] |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |
Realized Gain (Loss) on Derivatives Recognized in Income | 26,761,918 | 65,202,331 | 55,276,535 | 94,806,479
Change in Unrealized Appreciation (Depreciation) on Derivatives Recognized in Income | (4,167,221) | 9,673,101 | (8,822,042) | 12,828,278
ProShares Ultra VIX Short-Term Futures ETF [Member] |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |
Realized Gain (Loss) on Derivatives Recognized in Income | (57,412,686) | (426,300,356) | (148,405,278) | (608,541,564)
Change in Unrealized Appreciation (Depreciation) on Derivatives Recognized in Income | 11,698,440 | (45,315,177) | 24,979,009 | (43,277,650)
ProShares VIX Mid-Term Futures ETF [Member] |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |
Realized Gain (Loss) on Derivatives Recognized in Income | (8,949,418) | (6,943,333) | (15,054,609) | (22,764,053)
Change in Unrealized Appreciation (Depreciation) on Derivatives Recognized in Income | 1,095,379 | (9,675,102) | 3,885,170 | (5,092,642)
ProShares VIX Short-Term Futures ETF [Member] |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |
Realized Gain (Loss) on Derivatives Recognized in Income | (27,512,354) | (127,239,912) | (59,266,488) | (173,336,606)
Change in Unrealized Appreciation (Depreciation) on Derivatives Recognized in Income | 4,022,209 | (21,303,253) | 6,991,389 | (20,173,227)
ProShares Ultra Bloomberg Crude Oil [Member] |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |
Realized Gain (Loss) on Derivatives Recognized in Income | 6,957,617 | (76,414,795) | 100,088,722 | 9,365,632
Change in Unrealized Appreciation (Depreciation) on Derivatives Recognized in Income | (738,826) | 45,539,157 | 54,345,016 | (92,671,285)
ProShares Ultra Bloomberg Natural Gas [Member] |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |
Realized Gain (Loss) on Derivatives Recognized in Income | 211,772,181 | (616,886,915) | (30,408,733) | (1,678,521,779)
Change in Unrealized Appreciation (Depreciation) on Derivatives Recognized in Income | (60,263,391) | 658,057,024 | (196,656,346) | 605,047,334
ProShares Ultra Gold [Member] |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |
Realized Gain (Loss) on Derivatives Recognized in Income | 31,567,821 | 17,168,107 | 50,042,103 | 27,968,003
Change in Unrealized Appreciation (Depreciation) on Derivatives Recognized in Income | (17,226,689) | (32,854,842) | (14,505,497) | (22,166,463)
ProShares Ultra Silver [Member] |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |
Realized Gain (Loss) on Derivatives Recognized in Income | 220,680,441 | 64,615,443 | 216,214,526 | 35,871,579
Change in Unrealized Appreciation (Depreciation) on Derivatives Recognized in Income | (87,279,257) | (119,017,342) | (65,670,658) | (96,665,222)
ProShares UltraShort Bloomberg Crude Oil [Member] |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |
Realized Gain (Loss) on Derivatives Recognized in Income | (143,424) | 28,034,524 | (12,652,246) | 55,649,291
Change in Unrealized Appreciation (Depreciation) on Derivatives Recognized in Income | (1,552,095) | (8,216,608) | (36,001,228) | 2,739,622
ProShares UltraShort Bloomberg Natural Gas [Member] |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |
Realized Gain (Loss) on Derivatives Recognized in Income | (44,563,292) | 48,737,843 | 89,322 | 232,143,809
Change in Unrealized Appreciation (Depreciation) on Derivatives Recognized in Income | 20,550,559 | (61,250,100) | 44,377,047 | (106,209,898)
ProShares UltraShort Gold [Member] |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |
Realized Gain (Loss) on Derivatives Recognized in Income | (2,516,474) | (1,553,151) | (3,914,287) | (2,584,032)
Change in Unrealized Appreciation (Depreciation) on Derivatives Recognized in Income | 1,264,436 | 2,758,921 | 919,857 | 2,103,219
ProShares UltraShort Silver [Member] |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |
Realized Gain (Loss) on Derivatives Recognized in Income | (16,070,138) | 1,112,690 | (10,290,118) | 3,826,313
Change in Unrealized Appreciation (Depreciation) on Derivatives Recognized in Income | 4,902,824 | 5,650,294 | 3,484,222 | 4,467,058
ProShares Ultra Euro [Member] |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |
Realized Gain (Loss) on Derivatives Recognized in Income | (219,350) | 78,291 | (74,776) | 358,570
Change in Unrealized Appreciation (Depreciation) on Derivatives Recognized in Income | 62,167 | (79,023) | (447,347) | (175,968)
ProShares Ultra Yen [Member] |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |
Realized Gain (Loss) on Derivatives Recognized in Income | (5,365,623) | (770,142) | (7,397,198) | (1,068,950)
Change in Unrealized Appreciation (Depreciation) on Derivatives Recognized in Income | (842,412) | (1,348,109) | (4,421,343) | (1,842,176)
ProShares UltraShort Euro [Member] |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |
Realized Gain (Loss) on Derivatives Recognized in Income | 900,760 | (1,045,942) | (38,460) | (2,453,253)
Change in Unrealized Appreciation (Depreciation) on Derivatives Recognized in Income | (199,005) | 556,469 | 2,768,728 | 697,680
ProShares UltraShort Yen [Member] |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |
Realized Gain (Loss) on Derivatives Recognized in Income | 4,417,569 | 1,370,771 | 6,126,381 | 342,795
Change in Unrealized Appreciation (Depreciation) on Derivatives Recognized in Income | 1,529,867 | 3,145,023 | 4,468,019 | 5,004,524
VIX Futures Contracts [Member] | Net realized gain (loss) on futures contracts and/or swap agreements/ changes in unrealized appreciation (depreciation) on futures contracts and/or swap agreements [Member] | ProShares Short VIX Short-Term Futures ETF [Member] | Not Designated as Hedging Instrument [Member] |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |
Realized Gain (Loss) on Derivatives Recognized in Income |  | 65,228,142 |  | 94,832,290
Change in Unrealized Appreciation (Depreciation) on Derivatives Recognized in Income |  | 9,658,017 |  | 12,836,824
VIX Futures Contracts [Member] | Net realized gain (loss) on futures contracts and/or swap agreements/ changes in unrealized appreciation (depreciation) on futures contracts and/or swap agreements [Member] | ProShares Ultra VIX Short-Term Futures ETF [Member] | Not Designated as Hedging Instrument [Member] |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |
Realized Gain (Loss) on Derivatives Recognized in Income |  | (426,304,544) |  | (608,537,974)
Change in Unrealized Appreciation (Depreciation) on Derivatives Recognized in Income |  | (45,320,517) |  | (43,274,267)
VIX Futures Contracts [Member] | Net realized gain (loss) on futures contracts and/or swap agreements/ changes in unrealized appreciation (depreciation) on futures contracts and/or swap agreements [Member] | ProShares VIX Mid-Term Futures ETF [Member] | Not Designated as Hedging Instrument [Member] |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |
Realized Gain (Loss) on Derivatives Recognized in Income |  | (6,943,333) |  | (22,764,053)
Change in Unrealized Appreciation (Depreciation) on Derivatives Recognized in Income |  | (9,677,526) |  | (5,086,991)
VIX Futures Contracts [Member] | Net realized gain (loss) on futures contracts and/or swap agreements/ changes in unrealized appreciation (depreciation) on futures contracts and/or swap agreements [Member] | ProShares VIX Short-Term Futures ETF [Member] | Not Designated as Hedging Instrument [Member] |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |
Realized Gain (Loss) on Derivatives Recognized in Income |  | (127,229,299) |  | (173,326,001)
Change in Unrealized Appreciation (Depreciation) on Derivatives Recognized in Income |  | (21,324,056) |  | (20,176,064)
VIX Futures Contracts [Member] | Net realized gain (loss) on futures contracts/ changes in unrealized appreciation (depreciation) on futures contracts [Member] | ProShares Short VIX Short-Term Futures ETF [Member] | Not Designated as Hedging Instrument [Member] |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |
Realized Gain (Loss) on Derivatives Recognized in Income | 26,761,918 |  | 55,258,866 |
Change in Unrealized Appreciation (Depreciation) on Derivatives Recognized in Income | (4,177,838) |  | (8,805,425) |
VIX Futures Contracts [Member] | Net realized gain (loss) on futures contracts/ changes in unrealized appreciation (depreciation) on futures contracts [Member] | ProShares Ultra VIX Short-Term Futures ETF [Member] | Not Designated as Hedging Instrument [Member] |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |
Realized Gain (Loss) on Derivatives Recognized in Income | (57,413,186) |  | (148,416,415) |
Change in Unrealized Appreciation (Depreciation) on Derivatives Recognized in Income | 11,693,863 |  | 24,978,991 |
VIX Futures Contracts [Member] | Net realized gain (loss) on futures contracts/ changes in unrealized appreciation (depreciation) on futures contracts [Member] | ProShares VIX Mid-Term Futures ETF [Member] | Not Designated as Hedging Instrument [Member] |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |
Realized Gain (Loss) on Derivatives Recognized in Income | (8,949,418) |  | (15,057,887) |
Change in Unrealized Appreciation (Depreciation) on Derivatives Recognized in Income | 1,092,860 |  | 3,882,651 |
VIX Futures Contracts [Member] | Net realized gain (loss) on futures contracts/ changes in unrealized appreciation (depreciation) on futures contracts [Member] | ProShares VIX Short-Term Futures ETF [Member] | Not Designated as Hedging Instrument [Member] |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |
Realized Gain (Loss) on Derivatives Recognized in Income | (27,512,354) |  | (59,271,318) |
Change in Unrealized Appreciation (Depreciation) on Derivatives Recognized in Income | 4,018,755 |  | 7,003,274 |
Commodities Contracts [Member] | Net realized gain (loss) on futures contracts and swap agreements/ changes in unrealized appreciation (depreciation) on futures contracts and swap agreements [Member] | ProShares Ultra Bloomberg Crude Oil [Member] | Not Designated as Hedging Instrument [Member] |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |
Realized Gain (Loss) on Derivatives Recognized in Income | 6,956,921 | (76,355,417) | 100,075,521 | 9,425,010
Change in Unrealized Appreciation (Depreciation) on Derivatives Recognized in Income | (748,073) | 45,434,288 | 54,390,334 | (92,725,228)
Commodities Contracts [Member] | Net realized gain (loss) on futures contracts and swap agreements/ changes in unrealized appreciation (depreciation) on futures contracts and swap agreements [Member] | ProShares Ultra Bloomberg Natural Gas [Member] | Not Designated as Hedging Instrument [Member] |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |
Realized Gain (Loss) on Derivatives Recognized in Income | 211,772,181 | (616,883,269) | (30,408,733) | (1,678,514,563)
Change in Unrealized Appreciation (Depreciation) on Derivatives Recognized in Income | (60,263,391) | 658,027,300 | (196,642,739) | 605,037,663
Commodities Contracts [Member] | Net realized gain (loss) on futures contracts and swap agreements/ changes in unrealized appreciation (depreciation) on futures contracts and swap agreements [Member] | ProShares Ultra Gold [Member] | Not Designated as Hedging Instrument [Member] |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |
Realized Gain (Loss) on Derivatives Recognized in Income | 31,567,821 | 17,196,569 | 50,039,092 | 27,996,465
Change in Unrealized Appreciation (Depreciation) on Derivatives Recognized in Income | (17,232,531) | (32,888,484) | (14,495,217) | (22,177,368)
Commodities Contracts [Member] | Net realized gain (loss) on futures contracts and swap agreements/ changes in unrealized appreciation (depreciation) on futures contracts and swap agreements [Member] | ProShares Ultra Silver [Member] | Not Designated as Hedging Instrument [Member] |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |
Realized Gain (Loss) on Derivatives Recognized in Income | 220,680,441 | 64,662,300 | 216,209,729 | 35,918,436
Change in Unrealized Appreciation (Depreciation) on Derivatives Recognized in Income | (87,290,676) | (119,061,722) | (65,650,154) | (96,674,064)
Commodities Contracts [Member] | Net realized gain (loss) on futures contracts and swap agreements/ changes in unrealized appreciation (depreciation) on futures contracts and swap agreements [Member] | ProShares UltraShort Bloomberg Crude Oil [Member] | Not Designated as Hedging Instrument [Member] |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |
Realized Gain (Loss) on Derivatives Recognized in Income | (143,424) | 28,046,795 | (12,659,025) | 55,661,074
Change in Unrealized Appreciation (Depreciation) on Derivatives Recognized in Income | (1,560,618) | (8,229,852) | (35,992,048) | 2,741,263
Commodities Contracts [Member] | Net realized gain (loss) on futures contracts and swap agreements/ changes in unrealized appreciation (depreciation) on futures contracts and swap agreements [Member] | ProShares UltraShort Bloomberg Natural Gas [Member] | Not Designated as Hedging Instrument [Member] |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |
Realized Gain (Loss) on Derivatives Recognized in Income | (44,563,292) | 48,736,428 | 91,065 | 232,145,072
Change in Unrealized Appreciation (Depreciation) on Derivatives Recognized in Income | 20,547,016 | (61,246,927) | 44,377,650 | (106,199,730)
Commodities Contracts [Member] | Net realized gain (loss) on futures contracts and swap agreements/ changes in unrealized appreciation (depreciation) on futures contracts and swap agreements [Member] | ProShares UltraShort Gold [Member] | Not Designated as Hedging Instrument [Member] |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |
Realized Gain (Loss) on Derivatives Recognized in Income | (2,516,474) | (1,553,151) | (3,914,287) | (2,584,032)
Change in Unrealized Appreciation (Depreciation) on Derivatives Recognized in Income | 1,264,436 | 2,758,921 | 919,857 | 2,103,219
Commodities Contracts [Member] | Net realized gain (loss) on futures contracts and swap agreements/ changes in unrealized appreciation (depreciation) on futures contracts and swap agreements [Member] | ProShares UltraShort Silver [Member] | Not Designated as Hedging Instrument [Member] |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |
Realized Gain (Loss) on Derivatives Recognized in Income | (16,070,138) | 1,113,596 | (10,290,118) | 3,827,219
Change in Unrealized Appreciation (Depreciation) on Derivatives Recognized in Income | 4,902,824 | 5,650,294 | 3,484,222 | 4,467,058
Foreign Exchange Contracts [Member] | Net realized gain (loss) on futures and/ or foreign currency forward contracts/ changes in unrealized appreciation (depreciation) on futures and/ or foreign currency forward contracts [Member] | ProShares Ultra Euro [Member] | Not Designated as Hedging Instrument [Member] |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |
Realized Gain (Loss) on Derivatives Recognized in Income |  | 78,291 |  | 358,570
Change in Unrealized Appreciation (Depreciation) on Derivatives Recognized in Income |  | (79,023) |  | (175,968)
Foreign Exchange Contracts [Member] | Net realized gain (loss) on futures and/ or foreign currency forward contracts/ changes in unrealized appreciation (depreciation) on futures and/ or foreign currency forward contracts [Member] | ProShares Ultra Yen [Member] | Not Designated as Hedging Instrument [Member] |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |
Realized Gain (Loss) on Derivatives Recognized in Income |  | (770,142) |  | (1,068,950)
Change in Unrealized Appreciation (Depreciation) on Derivatives Recognized in Income |  | (1,348,109) |  | (1,842,176)
Foreign Exchange Contracts [Member] | Net realized gain (loss) on futures and/ or foreign currency forward contracts/ changes in unrealized appreciation (depreciation) on futures and/ or foreign currency forward contracts [Member] | ProShares UltraShort Euro [Member] | Not Designated as Hedging Instrument [Member] |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |
Realized Gain (Loss) on Derivatives Recognized in Income |  | (1,045,942) |  | (2,453,253)
Change in Unrealized Appreciation (Depreciation) on Derivatives Recognized in Income |  | 556,469 |  | 702,482
Foreign Exchange Contracts [Member] | Net realized gain (loss) on futures and/ or foreign currency forward contracts/ changes in unrealized appreciation (depreciation) on futures and/ or foreign currency forward contracts [Member] | ProShares UltraShort Yen [Member] | Not Designated as Hedging Instrument [Member] |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |
Realized Gain (Loss) on Derivatives Recognized in Income |  | 1,370,771 |  | 342,795
Change in Unrealized Appreciation (Depreciation) on Derivatives Recognized in Income |  | $ 3,145,023 |  | $ 5,007,285
Foreign Exchange Contracts [Member] | Net realized gain (loss) on foreign currency forward contracts/ changes in unrealized appreciation (depreciation) on foreign currency forward contracts [Member] | ProShares Ultra Euro [Member] | Not Designated as Hedging Instrument [Member] |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |
Realized Gain (Loss) on Derivatives Recognized in Income | (219,350) |  | (74,776) |
Change in Unrealized Appreciation (Depreciation) on Derivatives Recognized in Income | 62,167 |  | (447,347) |
Foreign Exchange Contracts [Member] | Net realized gain (loss) on foreign currency forward contracts/ changes in unrealized appreciation (depreciation) on foreign currency forward contracts [Member] | ProShares Ultra Yen [Member] | Not Designated as Hedging Instrument [Member] |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |
Realized Gain (Loss) on Derivatives Recognized in Income | (5,365,623) |  | (7,397,198) |
Change in Unrealized Appreciation (Depreciation) on Derivatives Recognized in Income | (842,412) |  | (4,421,343) |
Foreign Exchange Contracts [Member] | Net realized gain (loss) on foreign currency forward contracts/ changes in unrealized appreciation (depreciation) on foreign currency forward contracts [Member] | ProShares UltraShort Euro [Member] | Not Designated as Hedging Instrument [Member] |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |
Realized Gain (Loss) on Derivatives Recognized in Income | 900,760 |  | (43,101) |
Change in Unrealized Appreciation (Depreciation) on Derivatives Recognized in Income | (199,005) |  | 2,768,728 |
Foreign Exchange Contracts [Member] | Net realized gain (loss) on foreign currency forward contracts/ changes in unrealized appreciation (depreciation) on foreign currency forward contracts [Member] | ProShares UltraShort Yen [Member] | Not Designated as Hedging Instrument [Member] |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |
Realized Gain (Loss) on Derivatives Recognized in Income | 4,417,569 |  | 6,122,840 |
Change in Unrealized Appreciation (Depreciation) on Derivatives Recognized in Income | $ 1,529,867 |  | $ 4,468,019 |

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