v3.21.1

Schedule of Investments - Short-Term U.S. Government and Agency Obligations (Detail) - U.S. Government Agencies Short-term Debt Securities [Member] - USD ($) | Mar. 31, 2021 | Dec. 31, 2020
--- | --- | ---
Schedule of Investments [Line Items] |  |  |
Short-term U.S. government and agency obligations, value |  | $ 2,026,935,650 | $ 1,034,986,384
ProShares Short Euro [Member] |  |  |
Schedule of Investments [Line Items] |  |  |
Short-term U.S. government and agency obligations, value |  | 999,973 |
ProShares Short Euro [Member] | U.S. Treasury Bills 0.086% due 05/20/21 [Member] |  |  |
Schedule of Investments [Line Items] |  |  |
Principal Amount | [1] | 1,000,000 |
Short-term U.S. government and agency obligations, value | [1] | 999,973 |
ProShares Short VIX Short-Term Futures ETF [Member] |  |  |
Schedule of Investments [Line Items] |  |  |
Short-term U.S. government and agency obligations, value |  | 91,998,460 | 69,999,639
ProShares Short VIX Short-Term Futures ETF [Member] | U.S. Treasury Bills 0.075% due 04/15/21 [Member] |  |  |
Schedule of Investments [Line Items] |  |  |
Principal Amount | [1] | 50,000,000 |
Short-term U.S. government and agency obligations, value | [1] | 49,999,710 |
ProShares Short VIX Short-Term Futures ETF [Member] | U.S. Treasury Bills 0.086% due 05/20/21 [Member] |  |  |
Schedule of Investments [Line Items] |  |  |
Principal Amount | [1] | 20,000,000 |
Short-term U.S. government and agency obligations, value | [1] | 19,999,456 |
ProShares Short VIX Short-Term Futures ETF [Member] | U.S. Treasury Bills 0.041% due 06/17/21 [Member] |  |  |
Schedule of Investments [Line Items] |  |  |
Principal Amount | [1] | 22,000,000 |
Short-term U.S. government and agency obligations, value | [1] | 21,999,294 |
ProShares Ultra Bloomberg Crude Oil [Member] |  |  |
Schedule of Investments [Line Items] |  |  |
Short-term U.S. government and agency obligations, value |  | 689,976,589 | 219,998,394
ProShares Ultra Bloomberg Crude Oil [Member] | U.S. Treasury Bills 0.060% due 04/15/21 [Member] |  |  |
Schedule of Investments [Line Items] |  |  |
Principal Amount | [1] | 90,000,000 |
Short-term U.S. government and agency obligations, value | [1] | 89,999,478 |
ProShares Ultra Bloomberg Crude Oil [Member] | U.S. Treasury Bills 0.048% due 05/20/21 [Member] |  |  |
Schedule of Investments [Line Items] |  |  |
Principal Amount | [1],[2] | 195,000,000 |
Short-term U.S. government and agency obligations, value | [1],[2] | 194,994,696 |
ProShares Ultra Bloomberg Crude Oil [Member] | U.S. Treasury Bills 0.045% due 06/17/21 [Member] |  |  |
Schedule of Investments [Line Items] |  |  |
Principal Amount | [1],[2] | 230,000,000 |
Short-term U.S. government and agency obligations, value | [1],[2] | 229,992,617 |
ProShares Ultra Bloomberg Crude Oil [Member] | U.S. Treasury Bills 0.061% due 07/15/21 [Member] |  |  |
Schedule of Investments [Line Items] |  |  |
Principal Amount | [1],[2] | 175,000,000 |
Short-term U.S. government and agency obligations, value | [1],[2] | 174,989,798 |
ProShares Ultra Bloomberg Natural Gas [Member] |  |  |
Schedule of Investments [Line Items] |  |  |
Short-term U.S. government and agency obligations, value |  | 33,999,110 | 29,999,889
ProShares Ultra Bloomberg Natural Gas [Member] | U.S. Treasury Bills 0.041% due 04/15/21 [Member] |  |  |
Schedule of Investments [Line Items] |  |  |
Principal Amount | [1] | 3,000,000 |
Short-term U.S. government and agency obligations, value | [1] | 2,999,983 |
ProShares Ultra Bloomberg Natural Gas [Member] | U.S. Treasury Bills 0.076% due 05/20/21 [Member] |  |  |
Schedule of Investments [Line Items] |  |  |
Principal Amount | [1] | 25,000,000 |
Short-term U.S. government and agency obligations, value | [1] | 24,999,320 |
ProShares Ultra Bloomberg Natural Gas [Member] | U.S. Treasury Bills 0.040% due 06/17/21 [Member] |  |  |
Schedule of Investments [Line Items] |  |  |
Principal Amount | [1] | 6,000,000 |
Short-term U.S. government and agency obligations, value | [1] | 5,999,807 |
ProShares Ultra Euro [Member] |  |  |
Schedule of Investments [Line Items] |  |  |
Short-term U.S. government and agency obligations, value |  | 999,973 |
ProShares Ultra Euro [Member] | U.S. Treasury Bills 0.086% due 05/20/21 [Member] |  |  |
Schedule of Investments [Line Items] |  |  |
Principal Amount | [1] | 1,000,000 |
Short-term U.S. government and agency obligations, value | [1] | 999,973 |
ProShares Ultra Gold [Member] |  |  |
Schedule of Investments [Line Items] |  |  |
Short-term U.S. government and agency obligations, value |  | 86,998,893 | 74,999,467
ProShares Ultra Gold [Member] | U.S. Treasury Bills 0.069% due 04/15/21 [Member] |  |  |
Schedule of Investments [Line Items] |  |  |
Principal Amount | [1],[2] | 60,000,000 |
Short-term U.S. government and agency obligations, value | [1],[2] | 59,999,651 |
ProShares Ultra Gold [Member] | U.S. Treasury Bills 0.070% due 05/20/21 [Member] |  |  |
Schedule of Investments [Line Items] |  |  |
Principal Amount | [1],[2] | 22,000,000 |
Short-term U.S. government and agency obligations, value | [1],[2] | 21,999,402 |
ProShares Ultra Gold [Member] | U.S. Treasury Bills 0.037% due 06/17/21 [Member] |  |  |
Schedule of Investments [Line Items] |  |  |
Principal Amount | [1],[2] | 5,000,000 |
Short-term U.S. government and agency obligations, value | [1],[2] | 4,999,840 |
ProShares Ultra Silver [Member] |  |  |
Schedule of Investments [Line Items] |  |  |
Short-term U.S. government and agency obligations, value |  | 419,985,837 | 244,993,989
ProShares Ultra Silver [Member] | U.S. Treasury Bills 0.062% due 04/15/21 [Member] |  |  |
Schedule of Investments [Line Items] |  |  |
Principal Amount | [1],[2] | 80,000,000 |
Short-term U.S. government and agency obligations, value | [1],[2] | 79,999,536 |
ProShares Ultra Silver [Member] | U.S. Treasury Bills 0.051% due 05/20/21 [Member] |  |  |
Schedule of Investments [Line Items] |  |  |
Principal Amount | [1],[2] | 100,000,000 |
Short-term U.S. government and agency obligations, value | [1],[2] | 99,997,280 |
ProShares Ultra Silver [Member] | U.S. Treasury Bills 0.057% due 06/17/21 [Member] |  |  |
Schedule of Investments [Line Items] |  |  |
Principal Amount | [1],[2] | 115,000,000 |
Short-term U.S. government and agency obligations, value | [1],[2] | 114,996,309 |
ProShares Ultra Silver [Member] | U.S. Treasury Bills 0.056% due 07/15/21 [Member] |  |  |
Schedule of Investments [Line Items] |  |  |
Principal Amount | [1],[2] | 125,000,000 |
Short-term U.S. government and agency obligations, value | [1],[2] | 124,992,712 |
ProShares Ultra VIX Short-Term Futures ETF [Member] |  |  |
Schedule of Investments [Line Items] |  |  |
Short-term U.S. government and agency obligations, value |  | 376,985,173 | 244,995,969
ProShares Ultra VIX Short-Term Futures ETF [Member] | U.S. Treasury Bills 0.061% due 05/20/21 [Member] |  |  |
Schedule of Investments [Line Items] |  |  |
Principal Amount | [1] | 100,000,000 |
Short-term U.S. government and agency obligations, value | [1] | 99,997,280 |
ProShares Ultra VIX Short-Term Futures ETF [Member] | U.S. Treasury Bills 0.063% due 04/15/21 [Member] |  |  |
Schedule of Investments [Line Items] |  |  |
Principal Amount | [1] | 77,000,000 |
Short-term U.S. government and agency obligations, value | [1] | 76,999,553 |
ProShares Ultra VIX Short-Term Futures ETF [Member] | U.S. Treasury Bills 0.051% due 07/15/21 [Member] |  |  |
Schedule of Investments [Line Items] |  |  |
Principal Amount | [1] | 200,000,000 |
Short-term U.S. government and agency obligations, value | [1] | 199,988,340 |
Proshares Ultra Yen [Member] |  |  |
Schedule of Investments [Line Items] |  |  |
Short-term U.S. government and agency obligations, value |  | 499,986 |
Proshares Ultra Yen [Member] | U.S. Treasury Bills 0.086% due 05/20/21 [Member] |  |  |
Schedule of Investments [Line Items] |  |  |
Principal Amount | [1] | 500,000 |
Short-term U.S. government and agency obligations, value | [1] | 499,986 |
ProShares UltraShort Bloomberg Crude Oil [Member] |  |  |
Schedule of Investments [Line Items] |  |  |
Short-term U.S. government and agency obligations, value |  | 34,999,082 |
ProShares UltraShort Bloomberg Crude Oil [Member] | U.S. Treasury Bills 0.041% due 04/15/21 [Member] |  |  |
Schedule of Investments [Line Items] |  |  |
Principal Amount | [1] | 5,000,000 |
Short-term U.S. government and agency obligations, value | [1] | 4,999,971 |
ProShares UltraShort Bloomberg Crude Oil [Member] | U.S. Treasury Bills 0.086% due 05/20/21 [Member] |  |  |
Schedule of Investments [Line Items] |  |  |
Principal Amount | [1] | 15,000,000 |
Short-term U.S. government and agency obligations, value | [1] | 14,999,592 |
ProShares UltraShort Bloomberg Crude Oil [Member] | U.S. Treasury Bills 0.042% due 06/17/21 [Member] |  |  |
Schedule of Investments [Line Items] |  |  |
Principal Amount | [1] | 15,000,000 |
Short-term U.S. government and agency obligations, value | [1] | 14,999,519 |
ProShares UltraShort Bloomberg Natural Gas [Member] |  |  |
Schedule of Investments [Line Items] |  |  |
Short-term U.S. government and agency obligations, value |  | 43,998,801 | 9,999,861
ProShares UltraShort Bloomberg Natural Gas [Member] | U.S. Treasury Bills 0.041% due 04/15/21 [Member] |  |  |
Schedule of Investments [Line Items] |  |  |
Principal Amount | [1] | 4,000,000 |
Short-term U.S. government and agency obligations, value | [1] | 3,999,977 |
ProShares UltraShort Bloomberg Natural Gas [Member] | U.S. Treasury Bills 0.047% due 05/20/21 [Member] |  |  |
Schedule of Investments [Line Items] |  |  |
Principal Amount | [1] | 22,000,000 |
Short-term U.S. government and agency obligations, value | [1] | 21,999,402 |
ProShares UltraShort Bloomberg Natural Gas [Member] | U.S. Treasury Bills 0.040% due 06/17/21 [Member] |  |  |
Schedule of Investments [Line Items] |  |  |
Principal Amount | [1] | 18,000,000 |
Short-term U.S. government and agency obligations, value | [1] | 17,999,422 |
ProShares UltraShort Euro [Member] |  |  |
Schedule of Investments [Line Items] |  |  |
Short-term U.S. government and agency obligations, value |  | 17,999,536 | 9,999,861
ProShares UltraShort Euro [Member] | U.S. Treasury Bills 0.041% due 04/15/21 [Member] |  |  |
Schedule of Investments [Line Items] |  |  |
Principal Amount | [1] | 3,000,000 |
Short-term U.S. government and agency obligations, value | [1] | 2,999,983 |
ProShares UltraShort Euro [Member] | U.S. Treasury Bills 0.086% due 05/20/21 [Member] |  |  |
Schedule of Investments [Line Items] |  |  |
Principal Amount | [1],[3] | 7,000,000 |
Short-term U.S. government and agency obligations, value | [1],[3] | 6,999,810 |
ProShares UltraShort Euro [Member] | U.S. Treasury Bills 0.041% due 06/17/21 [Member] |  |  |
Schedule of Investments [Line Items] |  |  |
Principal Amount | [1] | 8,000,000 |
Short-term U.S. government and agency obligations, value | [1] | 7,999,743 |
ProShares UltraShort Gold [Member] |  |  |
Schedule of Investments [Line Items] |  |  |
Short-term U.S. government and agency obligations, value |  | 12,999,597 |
ProShares UltraShort Gold [Member] | U.S. Treasury Bills 0.086% due 05/20/21 [Member] |  |  |
Schedule of Investments [Line Items] |  |  |
Principal Amount | [1],[2] | 3,000,000 |
Short-term U.S. government and agency obligations, value | [1],[2] | 2,999,918 |
ProShares UltraShort Gold [Member] | U.S. Treasury Bills 0.041% due 06/17/21 [Member] |  |  |
Schedule of Investments [Line Items] |  |  |
Principal Amount | [1],[2] | 10,000,000 |
Short-term U.S. government and agency obligations, value | [1],[2] | 9,999,679 |
ProShares UltraShort Silver [Member] |  |  |
Schedule of Investments [Line Items] |  |  |
Short-term U.S. government and agency obligations, value |  | 14,999,620 |
ProShares UltraShort Silver [Member] | U.S. Treasury Bills 0.041% due 04/15/21 [Member] |  |  |
Schedule of Investments [Line Items] |  |  |
Principal Amount | [1],[2] | 2,000,000 |
Short-term U.S. government and agency obligations, value | [1],[2] | 1,999,989 |
ProShares UltraShort Silver [Member] | U.S. Treasury Bills 0.044% due 06/17/21 [Member] |  |  |
Schedule of Investments [Line Items] |  |  |
Principal Amount | [1],[2] | 3,000,000 |
Short-term U.S. government and agency obligations, value | [1],[2] | 2,999,904 |
ProShares UltraShort Silver [Member] | U.S. Treasury Bills 0.061% due 05/20/21 [Member] |  |  |
Schedule of Investments [Line Items] |  |  |
Principal Amount | [1],[2] | 10,000,000 |
Short-term U.S. government and agency obligations, value | [1],[2] | 9,999,727 |
ProShares UltraShort Yen [Member] |  |  |
Schedule of Investments [Line Items] |  |  |
Short-term U.S. government and agency obligations, value |  | 14,499,635 |
ProShares UltraShort Yen [Member] | U.S. Treasury Bills 0.041% due 04/15/21 [Member] |  |  |
Schedule of Investments [Line Items] |  |  |
Principal Amount | [1] | 3,000,000 |
Short-term U.S. government and agency obligations, value | [1] | 2,999,983 |
ProShares UltraShort Yen [Member] | U.S. Treasury Bills 0.086% due 05/20/21 [Member] |  |  |
Schedule of Investments [Line Items] |  |  |
Principal Amount | [1] | 4,500,000 |
Short-term U.S. government and agency obligations, value | [1] | 4,499,878 |
ProShares UltraShort Yen [Member] | U.S. Treasury Bills 0.044% due 06/17/21 [Member] |  |  |
Schedule of Investments [Line Items] |  |  |
Principal Amount | [1] | 7,000,000 |
Short-term U.S. government and agency obligations, value | [1] | 6,999,774 |
ProShares VIX Mid-Term Futures ETF [Member] |  |  |
Schedule of Investments [Line Items] |  |  |
Short-term U.S. government and agency obligations, value |  | 31,999,153 | 44,999,732
ProShares VIX Mid-Term Futures ETF [Member] | U.S. Treasury Bills 0.041% due 04/15/21 [Member] |  |  |
Schedule of Investments [Line Items] |  |  |
Principal Amount | [1] | 5,000,000 |
Short-term U.S. government and agency obligations, value | [1] | 4,999,971 |
ProShares VIX Mid-Term Futures ETF [Member] | U.S. Treasury Bills 0.086% due 05/20/21 [Member] |  |  |
Schedule of Investments [Line Items] |  |  |
Principal Amount | [1] | 10,000,000 |
Short-term U.S. government and agency obligations, value | [1] | 9,999,728 |
ProShares VIX Mid-Term Futures ETF [Member] | U.S. Treasury Bills 0.040% due 06/17/21 [Member] |  |  |
Schedule of Investments [Line Items] |  |  |
Principal Amount | [1] | 17,000,000 |
Short-term U.S. government and agency obligations, value | [1] | 16,999,454 |
ProShares VIX Short-Term Futures ETF [Member] |  |  |
Schedule of Investments [Line Items] |  |  |
Short-term U.S. government and agency obligations, value |  | 152,996,232 | $ 84,999,583
ProShares VIX Short-Term Futures ETF [Member] | U.S. Treasury Bills 0.086% due 05/20/21 [Member] |  |  |
Schedule of Investments [Line Items] |  |  |
Principal Amount | [1] | 18,000,000 |
Short-term U.S. government and agency obligations, value | [1] | 17,999,510 |
ProShares VIX Short-Term Futures ETF [Member] | U.S. Treasury Bills 0.067% due 04/15/21 [Member] |  |  |
Schedule of Investments [Line Items] |  |  |
Principal Amount | [1] | 65,000,000 |
Short-term U.S. government and agency obligations, value | [1] | 64,999,623 |
ProShares VIX Short-Term Futures ETF [Member] | U.S. Treasury Bills 0.040% due 06/17/21 [Member] |  |  |
Schedule of Investments [Line Items] |  |  |
Principal Amount | [1] | 45,000,000 |
Short-term U.S. government and agency obligations, value | [1] | 44,998,556 |
ProShares VIX Short-Term Futures ETF [Member] | U.S. Treasury Bills 0.075% due 07/15/21 [Member] |  |  |
Schedule of Investments [Line Items] |  |  |
Principal Amount | [1] | 25,000,000 |
Short-term U.S. government and agency obligations, value | [1] | $ 24,998,543 |
[1] | Rates shown represent discount rate at the time of purchase.
[2] | All or partial amount pledged as collateral for swap agreements.
[3] | All or partial amount pledged as collateral for foreign currency forward contracts.

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