v3.24.0.1

Investments - Effect of Derivative Instruments on Statements of Operations (Detail) - USD ($) | 12 Months Ended
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Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |
Realized Gain (Loss) on Derivatives Recognized in Income | $ (2,716,520,875) | $ 321,313,828 | [1] | $ (1,555,465,807)
Change in Unrealized Appreciation/ Depreciation on Derivatives Recognized in Income | 143,926,302 | (215,342,862) | [1] | (71,022,065)
ProShares Short VIX Short-Term Futures ETF [Member] |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |
Realized Gain (Loss) on Derivatives Recognized in Income | 160,494,706 | 21,368,088 |  | 194,998,324
Change in Unrealized Appreciation/ Depreciation on Derivatives Recognized in Income | 1,542,809 | (20,123,277) |  | 22,890,058
ProShares Ultra VIX Short-Term Futures ETF [Member] |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |
Realized Gain (Loss) on Derivatives Recognized in Income | (940,103,052) | (151,299,433) |  | (1,983,414,849)
Change in Unrealized Appreciation/ Depreciation on Derivatives Recognized in Income | 5,368,159 | 90,347,140 |  | (78,354,915)
ProShares VIX Mid-Term Futures ETF [Member] |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |
Realized Gain (Loss) on Derivatives Recognized in Income | (38,709,532) | 9,333,594 |  | (15,245,794)
Change in Unrealized Appreciation/ Depreciation on Derivatives Recognized in Income | 1,039,896 | (4,146,850) |  | 494,235
ProShares VIX Short-Term Futures ETF [Member] |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |
Realized Gain (Loss) on Derivatives Recognized in Income | (275,363,159) | (35,673,890) |  | (360,304,827)
Change in Unrealized Appreciation/ Depreciation on Derivatives Recognized in Income | 126,426 | 20,377,669 |  | (23,793,649)
ProShares Ultra Bloomberg Crude Oil [Member] |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |
Realized Gain (Loss) on Derivatives Recognized in Income | 100,808,721 | 728,828,780 |  | 952,826,131
Change in Unrealized Appreciation/ Depreciation on Derivatives Recognized in Income | (86,020,999) | (110,838,459) |  | 48,532,601
ProShares Ultra Bloomberg Natural Gas [Member] |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |
Realized Gain (Loss) on Derivatives Recognized in Income | (2,080,655,811) | 109,675,787 |  | (51,850,483)
Change in Unrealized Appreciation/ Depreciation on Derivatives Recognized in Income | 354,183,787 | (302,342,668) |  | (14,721,467)
ProShares Ultra Gold [Member] |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |
Realized Gain (Loss) on Derivatives Recognized in Income | 21,400,830 | (32,910,658) |  | (31,323,946)
Change in Unrealized Appreciation/ Depreciation on Derivatives Recognized in Income | (2,575,471) | 475,522 |  | 1,497,196
ProShares Ultra Silver [Member] |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |
Realized Gain (Loss) on Derivatives Recognized in Income | 7,175,146 | (68,909,709) |  | (172,447,879)
Change in Unrealized Appreciation/ Depreciation on Derivatives Recognized in Income | (59,096,598) | 25,616,009 |  | (50,874,626)
ProShares UltraShort Bloomberg Crude Oil [Member] |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |
Realized Gain (Loss) on Derivatives Recognized in Income | 12,367,670 | (108,954,702) |  | (105,294,702)
Change in Unrealized Appreciation/ Depreciation on Derivatives Recognized in Income | 12,181,761 | 18,690,259 |  | 6,211,074
ProShares UltraShort Bloomberg Natural Gas [Member] |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |
Realized Gain (Loss) on Derivatives Recognized in Income | 306,795,581 | (165,453,289) |  | 9,183,902
Change in Unrealized Appreciation/ Depreciation on Derivatives Recognized in Income | (89,455,705) | 72,499,952 |  | 13,022,687
ProShares UltraShort Gold [Member] |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |
Realized Gain (Loss) on Derivatives Recognized in Income | (2,180,686) | 2,576,565 |  | (2,448,551)
Change in Unrealized Appreciation/ Depreciation on Derivatives Recognized in Income | 347,791 | 146,776 |  | (372,961)
ProShares UltraShort Silver [Member] |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |
Realized Gain (Loss) on Derivatives Recognized in Income | 13,437,583 | (1,670,159) |  | (17,795)
Change in Unrealized Appreciation/ Depreciation on Derivatives Recognized in Income | 3,537,995 | (1,393,342) |  | 2,147,856
ProShares Ultra Euro [Member] |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |
Realized Gain (Loss) on Derivatives Recognized in Income | 293,493 | (959,302) |  | (498,935)
Change in Unrealized Appreciation/ Depreciation on Derivatives Recognized in Income | (108,707) | 333,456 |  | (6,536)
ProShares Ultra Yen [Member] |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |
Realized Gain (Loss) on Derivatives Recognized in Income | (2,637,502) | (1,140,278) |  | (442,664)
Change in Unrealized Appreciation/ Depreciation on Derivatives Recognized in Income | 534,736 | 1,077,661 |  | (160,199)
ProShares UltraShort Euro [Member] |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |
Realized Gain (Loss) on Derivatives Recognized in Income | (2,624,737) | 7,003,039 |  | 6,311,782
Change in Unrealized Appreciation/ Depreciation on Derivatives Recognized in Income | 607,675 | (2,241,250) |  | 921,251
ProShares UltraShort Yen [Member] |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |
Realized Gain (Loss) on Derivatives Recognized in Income | 2,979,874 | 9,123,513 |  | 4,126,928
Change in Unrealized Appreciation/ Depreciation on Derivatives Recognized in Income | 1,712,747 | (3,892,009) |  | 1,432,303
Not Designated as Hedging Instrument [Member] |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |
Realized Gain (Loss) on Derivatives Recognized in Income | (2,716,361,247) | 321,211,639 |  | (1,555,995,693)
Change in Unrealized Appreciation/ Depreciation on Derivatives Recognized in Income | 144,054,886 | (215,963,582) |  | (70,709,656)
Not Designated as Hedging Instrument [Member] | 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] |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |
Realized Gain (Loss) on Derivatives Recognized in Income | 160,516,553 |  |  |
Change in Unrealized Appreciation/ Depreciation on Derivatives Recognized in Income | 1,548,243 |  |  |
Not Designated as Hedging Instrument [Member] | 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] |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |
Realized Gain (Loss) on Derivatives Recognized in Income | (940,116,773) |  |  |
Change in Unrealized Appreciation/ Depreciation on Derivatives Recognized in Income | 5,371,542 |  |  |
Not Designated as Hedging Instrument [Member] | 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] |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |
Realized Gain (Loss) on Derivatives Recognized in Income | (38,709,532) |  |  |
Change in Unrealized Appreciation/ Depreciation on Derivatives Recognized in Income | 1,045,547 |  |  |
Not Designated as Hedging Instrument [Member] | 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] |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |
Realized Gain (Loss) on Derivatives Recognized in Income | (275,353,500) |  |  |
Change in Unrealized Appreciation/ Depreciation on Derivatives Recognized in Income | 132,729 |  |  |
Not Designated as Hedging Instrument [Member] | 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] |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |
Realized Gain (Loss) on Derivatives Recognized in Income |  | 21,454,600 |  | 194,879,700
Change in Unrealized Appreciation/ Depreciation on Derivatives Recognized in Income |  | (20,182,897) |  | 22,926,495
Not Designated as Hedging Instrument [Member] | 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] |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |
Realized Gain (Loss) on Derivatives Recognized in Income |  | (150,931,020) |  | (1,983,514,595)
Change in Unrealized Appreciation/ Depreciation on Derivatives Recognized in Income |  | 90,278,741 |  | (78,284,721)
Not Designated as Hedging Instrument [Member] | 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] |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |
Realized Gain (Loss) on Derivatives Recognized in Income |  | 9,333,930 |  | (15,267,976)
Change in Unrealized Appreciation/ Depreciation on Derivatives Recognized in Income |  | (4,166,835) |  | 509,228
Not Designated as Hedging Instrument [Member] | 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] |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |
Realized Gain (Loss) on Derivatives Recognized in Income |  | (35,674,319) |  | (360,342,488)
Change in Unrealized Appreciation/ Depreciation on Derivatives Recognized in Income |  | 20,333,796 |  | (23,766,529)
Not Designated as Hedging Instrument [Member] | Commodity 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] |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |
Realized Gain (Loss) on Derivatives Recognized in Income | 100,867,538 | 728,836,569 |  | 952,749,709
Change in Unrealized Appreciation/ Depreciation on Derivatives Recognized in Income | (86,011,590) | (110,932,525) |  | 48,577,584
Not Designated as Hedging Instrument [Member] | Commodity 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] |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |
Realized Gain (Loss) on Derivatives Recognized in Income | (2,080,656,703) | 109,680,104 |  | (51,858,807)
Change in Unrealized Appreciation/ Depreciation on Derivatives Recognized in Income | 354,221,039 | (302,407,808) |  | (14,706,882)
Not Designated as Hedging Instrument [Member] | Commodity 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] |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |
Realized Gain (Loss) on Derivatives Recognized in Income | 21,429,154 | (32,909,950) |  | (31,344,564)
Change in Unrealized Appreciation/ Depreciation on Derivatives Recognized in Income | (2,563,686) | 444,472 |  | 1,506,228
Not Designated as Hedging Instrument [Member] | Commodity 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] |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |
Realized Gain (Loss) on Derivatives Recognized in Income | 7,222,003 | (68,901,992) |  | (172,475,230)
Change in Unrealized Appreciation/ Depreciation on Derivatives Recognized in Income | (59,077,259) | 25,552,542 |  | (50,844,634)
Not Designated as Hedging Instrument [Member] | Commodity 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] |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |
Realized Gain (Loss) on Derivatives Recognized in Income | 12,379,340 | (108,954,702) |  | (105,340,654)
Change in Unrealized Appreciation/ Depreciation on Derivatives Recognized in Income | 12,191,426 | 18,654,355 |  | 6,227,351
Not Designated as Hedging Instrument [Member] | Commodity 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] |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |
Realized Gain (Loss) on Derivatives Recognized in Income | 306,791,742 | (165,347,108) |  | 9,180,867
Change in Unrealized Appreciation/ Depreciation on Derivatives Recognized in Income | (89,442,905) | 72,453,147 |  | 13,056,941
Not Designated as Hedging Instrument [Member] | Commodity 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] |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |
Realized Gain (Loss) on Derivatives Recognized in Income | (2,180,686) | 2,576,561 |  | (2,454,946)
Change in Unrealized Appreciation/ Depreciation on Derivatives Recognized in Income | 347,791 | 143,195 |  | (369,380)
Not Designated as Hedging Instrument [Member] | Commodity 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] |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |
Realized Gain (Loss) on Derivatives Recognized in Income | 13,438,489 | (1,668,145) |  | (22,467)
Change in Unrealized Appreciation/ Depreciation on Derivatives Recognized in Income | 3,537,995 | (1,394,202) |  | 2,148,716
Not Designated as Hedging Instrument [Member] | 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] |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |
Realized Gain (Loss) on Derivatives Recognized in Income | 293,493 | (953,353) |  |
Change in Unrealized Appreciation/ Depreciation on Derivatives Recognized in Income | (108,707) | 333,004 |  |
Not Designated as Hedging Instrument [Member] | 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] |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |
Realized Gain (Loss) on Derivatives Recognized in Income | (2,637,502) | (1,141,826) |  |
Change in Unrealized Appreciation/ Depreciation on Derivatives Recognized in Income | 534,736 | 1,077,661 |  |
Not Designated as Hedging Instrument [Member] | 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] |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |
Realized Gain (Loss) on Derivatives Recognized in Income | (2,624,737) | 6,792,065 |  |
Change in Unrealized Appreciation/ Depreciation on Derivatives Recognized in Income | 612,477 | (2,253,215) |  |
Not Designated as Hedging Instrument [Member] | 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] |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |
Realized Gain (Loss) on Derivatives Recognized in Income | 2,979,874 | 9,020,225 |  |
Change in Unrealized Appreciation/ Depreciation on Derivatives Recognized in Income | $ 1,715,508 | $ (3,897,013) |  |
Not Designated as Hedging Instrument [Member] | 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 Short Euro [Member] |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |
Realized Gain (Loss) on Derivatives Recognized in Income |  |  |  | 183,708
Change in Unrealized Appreciation/ Depreciation on Derivatives Recognized in Income |  |  |  | 39,226
Not Designated as Hedging Instrument [Member] | 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 Australian Dollar [Member] |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |
Realized Gain (Loss) on Derivatives Recognized in Income |  |  |  | 191,674
Change in Unrealized Appreciation/ Depreciation on Derivatives Recognized in Income |  |  |  | 73,795
Not Designated as Hedging Instrument [Member] | 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] |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |
Realized Gain (Loss) on Derivatives Recognized in Income |  |  |  | (500,185)
Change in Unrealized Appreciation/ Depreciation on Derivatives Recognized in Income |  |  |  | (6,084)
Not Designated as Hedging Instrument [Member] | 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] |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |
Realized Gain (Loss) on Derivatives Recognized in Income |  |  |  | (442,767)
Change in Unrealized Appreciation/ Depreciation on Derivatives Recognized in Income |  |  |  | (160,199)
Not Designated as Hedging Instrument [Member] | 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] |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |
Realized Gain (Loss) on Derivatives Recognized in Income |  |  |  | 6,280,362
Change in Unrealized Appreciation/ Depreciation on Derivatives Recognized in Income |  |  |  | 928,663
Not Designated as Hedging Instrument [Member] | 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] |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |
Realized Gain (Loss) on Derivatives Recognized in Income |  |  |  | 4,102,966
Change in Unrealized Appreciation/ Depreciation on Derivatives Recognized in Income |  |  |  | $ 1,434,546
[1] | The operations include the activity of ProShares Short Euro ETF and ProShares UltraShort Australian Dollar ETF through May 12, 2022, the date of liquidation.

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