Investments - Effect of Derivative Instruments on Statements of Operations (Detail) - USD ($)
|
3 Months Ended |
Mar. 31, 2021 |
Mar. 31, 2020 |
| Derivative Instruments, Gain (Loss) [Line Items] |
|
|
|
|
| Realized Gain (Loss) on Derivatives Recognized in Income |
|
$ (477,186,271)
|
$ 26,787,188
|
[1] |
| Change in Unrealized Appreciation/ Depreciation on Derivatives Recognized in Income |
|
(389,847,943)
|
(58,422,629)
|
[1] |
| ProShares VIX Short-Term Futures ETF [Member] |
|
|
|
|
| Derivative Instruments, Gain (Loss) [Line Items] |
|
|
|
|
| Realized Gain (Loss) on Derivatives Recognized in Income |
|
(76,634,593)
|
325,737,788
|
|
| Change in Unrealized Appreciation/ Depreciation on Derivatives Recognized in Income |
|
(53,430,854)
|
67,902,244
|
|
| ProShares VIX Mid-Term Futures ETF [Member] |
|
|
|
|
| Derivative Instruments, Gain (Loss) [Line Items] |
|
|
|
|
| Realized Gain (Loss) on Derivatives Recognized in Income |
|
3,539,316
|
7,756,525
|
|
| Change in Unrealized Appreciation/ Depreciation on Derivatives Recognized in Income |
|
(8,275,522)
|
15,982,870
|
|
| ProShares Short VIX Short-Term Futures ETF [Member] |
|
|
|
|
| Derivative Instruments, Gain (Loss) [Line Items] |
|
|
|
|
| Realized Gain (Loss) on Derivatives Recognized in Income |
|
24,209,417
|
(244,300,604)
|
|
| Change in Unrealized Appreciation/ Depreciation on Derivatives Recognized in Income |
|
42,125,118
|
21,055,658
|
|
| ProShares Ultra VIX Short-Term Futures ETF [Member] |
|
|
|
|
| Derivative Instruments, Gain (Loss) [Line Items] |
|
|
|
|
| Realized Gain (Loss) on Derivatives Recognized in Income |
|
(704,499,504)
|
726,085,231
|
|
| Change in Unrealized Appreciation/ Depreciation on Derivatives Recognized in Income |
|
(284,359,331)
|
176,516,915
|
|
| ProShares UltraShort Bloomberg Crude Oil [Member] |
|
|
|
|
| Derivative Instruments, Gain (Loss) [Line Items] |
|
|
|
|
| Realized Gain (Loss) on Derivatives Recognized in Income |
|
(49,177,765)
|
51,674,002
|
|
| Change in Unrealized Appreciation/ Depreciation on Derivatives Recognized in Income |
|
5,638,844
|
76,581,357
|
|
| ProShares UltraShort Bloomberg Natural Gas [Member] |
|
|
|
|
| Derivative Instruments, Gain (Loss) [Line Items] |
|
|
|
|
| Realized Gain (Loss) on Derivatives Recognized in Income |
|
(6,359,394)
|
5,626,177
|
|
| Change in Unrealized Appreciation/ Depreciation on Derivatives Recognized in Income |
|
15,895,064
|
3,335,611
|
|
| ProShares UltraShort Gold [Member] |
|
|
|
|
| Derivative Instruments, Gain (Loss) [Line Items] |
|
|
|
|
| Realized Gain (Loss) on Derivatives Recognized in Income |
|
4,003,359
|
(5,930,882)
|
|
| Change in Unrealized Appreciation/ Depreciation on Derivatives Recognized in Income |
|
(179,853)
|
2,676,974
|
|
| ProShares UltraShort Silver [Member] |
|
|
|
|
| Derivative Instruments, Gain (Loss) [Line Items] |
|
|
|
|
| Realized Gain (Loss) on Derivatives Recognized in Income |
|
(2,932,266)
|
842,240
|
|
| Change in Unrealized Appreciation/ Depreciation on Derivatives Recognized in Income |
|
7,466,511
|
4,190,456
|
|
| ProShares Ultra Bloomberg Crude Oil [Member] |
|
|
|
|
| Derivative Instruments, Gain (Loss) [Line Items] |
|
|
|
|
| Realized Gain (Loss) on Derivatives Recognized in Income |
|
334,351,228
|
(505,553,797)
|
|
| Change in Unrealized Appreciation/ Depreciation on Derivatives Recognized in Income |
|
35,035,656
|
(322,421,661)
|
|
| ProShares Ultra Bloomberg Natural Gas [Member] |
|
|
|
|
| Derivative Instruments, Gain (Loss) [Line Items] |
|
|
|
|
| Realized Gain (Loss) on Derivatives Recognized in Income |
|
41,582,936
|
(22,818,551)
|
|
| Change in Unrealized Appreciation/ Depreciation on Derivatives Recognized in Income |
|
(17,798,868)
|
(4,437,037)
|
|
| ProShares Ultra Gold [Member] |
|
|
|
|
| Derivative Instruments, Gain (Loss) [Line Items] |
|
|
|
|
| Realized Gain (Loss) on Derivatives Recognized in Income |
|
(51,247,887)
|
21,498,056
|
|
| Change in Unrealized Appreciation/ Depreciation on Derivatives Recognized in Income |
|
(1,232,503)
|
(19,097,360)
|
|
| ProShares Ultra Silver [Member] |
|
|
|
|
| Derivative Instruments, Gain (Loss) [Line Items] |
|
|
|
|
| Realized Gain (Loss) on Derivatives Recognized in Income |
|
4,910,742
|
(3,697,654)
|
|
| Change in Unrealized Appreciation/ Depreciation on Derivatives Recognized in Income |
|
(137,743,781)
|
(85,061,831)
|
|
| ProShares Short Euro [Member] |
|
|
|
|
| Derivative Instruments, Gain (Loss) [Line Items] |
|
|
|
|
| Realized Gain (Loss) on Derivatives Recognized in Income |
|
69,393
|
(18,638)
|
|
| Change in Unrealized Appreciation/ Depreciation on Derivatives Recognized in Income |
|
78,642
|
67,294
|
|
| ProShares UltraShort Australian Dollar [Member] |
|
|
|
|
| Derivative Instruments, Gain (Loss) [Line Items] |
|
|
|
|
| Realized Gain (Loss) on Derivatives Recognized in Income |
|
(164,544)
|
670,950
|
|
| Change in Unrealized Appreciation/ Depreciation on Derivatives Recognized in Income |
|
206,052
|
947,380
|
|
| ProShares UltraShort Euro [Member] |
|
|
|
|
| Derivative Instruments, Gain (Loss) [Line Items] |
|
|
|
|
| Realized Gain (Loss) on Derivatives Recognized in Income |
|
70,527
|
1,047,283
|
|
| Change in Unrealized Appreciation/ Depreciation on Derivatives Recognized in Income |
|
4,392,237
|
3,190,251
|
|
| ProShares UltraShort Yen [Member] |
|
|
|
|
| Derivative Instruments, Gain (Loss) [Line Items] |
|
|
|
|
| Realized Gain (Loss) on Derivatives Recognized in Income |
|
1,259,573
|
(506,520)
|
|
| Change in Unrealized Appreciation/ Depreciation on Derivatives Recognized in Income |
|
2,901,742
|
(697,069)
|
|
| ProShares Ultra Euro [Member] |
|
|
|
|
| Derivative Instruments, Gain (Loss) [Line Items] |
|
|
|
|
| Realized Gain (Loss) on Derivatives Recognized in Income |
|
(27,342)
|
(53,268)
|
|
| Change in Unrealized Appreciation/ Depreciation on Derivatives Recognized in Income |
|
(311,052)
|
(221,542)
|
|
| ProShares Ultra Yen [Member] |
|
|
|
|
| Derivative Instruments, Gain (Loss) [Line Items] |
|
|
|
|
| Realized Gain (Loss) on Derivatives Recognized in Income |
|
(139,467)
|
(8,483)
|
|
| Change in Unrealized Appreciation/ Depreciation on Derivatives Recognized in Income |
|
(256,045)
|
(19,313)
|
|
| Not Designated as Hedging Instrument [Member] |
|
|
|
|
| Derivative Instruments, Gain (Loss) [Line Items] |
|
|
|
|
| Realized Gain (Loss) on Derivatives Recognized in Income |
|
(477,206,032)
|
26,610,754
|
|
| Change in Unrealized Appreciation/ Depreciation on Derivatives Recognized in Income |
|
(389,954,228)
|
(59,383,746)
|
|
| 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 |
|
(76,634,593)
|
325,737,788
|
|
| Change in Unrealized Appreciation/ Depreciation on Derivatives Recognized in Income |
|
(53,438,914)
|
67,783,030
|
|
| 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 |
|
3,539,316
|
7,756,525
|
|
| Change in Unrealized Appreciation/ Depreciation on Derivatives Recognized in Income |
|
(8,276,672)
|
15,963,130
|
|
| 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 |
|
24,209,417
|
(244,300,604)
|
|
| Change in Unrealized Appreciation/ Depreciation on Derivatives Recognized in Income |
|
42,121,892
|
20,973,802
|
|
| 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 |
|
(704,518,024)
|
726,085,231
|
|
| Change in Unrealized Appreciation/ Depreciation on Derivatives Recognized in Income |
|
(284,378,776)
|
176,381,861
|
|
| 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 |
|
(49,177,765)
|
51,674,022
|
|
| Change in Unrealized Appreciation/ Depreciation on Derivatives Recognized in Income |
|
5,636,634
|
76,578,230
|
|
| 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 |
|
(6,359,394)
|
5,626,177
|
|
| Change in Unrealized Appreciation/ Depreciation on Derivatives Recognized in Income |
|
15,893,547
|
3,334,986
|
|
| 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 |
|
4,003,190
|
(5,930,882)
|
|
| Change in Unrealized Appreciation/ Depreciation on Derivatives Recognized in Income |
|
(180,664)
|
2,675,796
|
|
| 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 |
|
(2,932,351)
|
842,240
|
|
| Change in Unrealized Appreciation/ Depreciation on Derivatives Recognized in Income |
|
7,465,764
|
4,190,271
|
|
| 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 |
|
334,351,228
|
(505,591,266)
|
|
| Change in Unrealized Appreciation/ Depreciation on Derivatives Recognized in Income |
|
34,994,083
|
(322,776,550)
|
|
| 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 |
|
41,582,385
|
(22,819,605)
|
|
| Change in Unrealized Appreciation/ Depreciation on Derivatives Recognized in Income |
|
(17,800,783)
|
(4,466,823)
|
|
| 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 |
|
(51,248,132)
|
21,498,056
|
|
| Change in Unrealized Appreciation/ Depreciation on Derivatives Recognized in Income |
|
(1,234,299)
|
(19,153,296)
|
|
| 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 |
|
4,910,551
|
(3,697,654)
|
|
| Change in Unrealized Appreciation/ Depreciation on Derivatives Recognized in Income |
|
(137,765,702)
|
(85,172,612)
|
|
| 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 UltraPro 3X Crude Oil ETF [Member] |
|
|
|
|
| Derivative Instruments, Gain (Loss) [Line Items] |
|
|
|
|
| Realized Gain (Loss) on Derivatives Recognized in Income |
[2] |
|
(414,693,599)
|
|
| Change in Unrealized Appreciation/ Depreciation on Derivatives Recognized in Income |
[2] |
|
(7,266,550)
|
|
| 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 UltraPro 3X Short Crude Oil ETF [Member] |
|
|
|
|
| Derivative Instruments, Gain (Loss) [Line Items] |
|
|
|
|
| Realized Gain (Loss) on Derivatives Recognized in Income |
[2] |
|
83,293,001
|
|
| Change in Unrealized Appreciation/ Depreciation on Derivatives Recognized in Income |
[2] |
|
8,358,056
|
|
| 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 |
|
69,393
|
(18,638)
|
|
| Change in Unrealized Appreciation/ Depreciation on Derivatives Recognized in Income |
|
78,554
|
67,324
|
|
| 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 |
|
(164,544)
|
670,950
|
|
| Change in Unrealized Appreciation/ Depreciation on Derivatives Recognized in Income |
|
206,052
|
947,586
|
|
| 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 |
|
70,527
|
1,047,283
|
|
| Change in Unrealized Appreciation/ Depreciation on Derivatives Recognized in Income |
|
4,391,397
|
3,137,931
|
|
| 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 |
|
1,259,573
|
(506,520)
|
|
| Change in Unrealized Appreciation/ Depreciation on Derivatives Recognized in Income |
|
2,900,888
|
(699,345)
|
|
| 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 |
|
(27,342)
|
(53,268)
|
|
| Change in Unrealized Appreciation/ Depreciation on Derivatives Recognized in Income |
|
(311,140)
|
(221,334)
|
|
| 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 |
|
(139,467)
|
(8,483)
|
|
| Change in Unrealized Appreciation/ Depreciation on Derivatives Recognized in Income |
|
$ (256,089)
|
$ (19,239)
|
|
|
|