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Schedule of Investments - Futures Contracts Sold (Detail) - Futures Contracts [Member] - Contracts to Sell [Member] | Dec. 31, 2025 USD ($) Contract | Dec. 31, 2024 USD ($) Contract
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ProShares Short VIX Short-Term Futures ETF [Member] |  |
Schedule of Investments [Line Items] |  |
Unrealized Appreciation (Depreciation)/Value | $ 15,699,597 | $ (3,008,751)
ProShares Short VIX Short-Term Futures ETF [Member] | VIX Futures - Cboe, expires January 2025 [Member] |  |
Schedule of Investments [Line Items] |  |
Number of Contracts | Contract |  | 4,447
Notional Amount at Value |  | $ 77,901,212
Unrealized Appreciation (Depreciation)/Value |  | $ (3,491,718)
ProShares Short VIX Short-Term Futures ETF [Member] | VIX Futures - Cboe, expires February 2025 [Member] |  |
Schedule of Investments [Line Items] |  |
Number of Contracts | Contract |  | 3,080
Notional Amount at Value |  | $ 55,042,064
Unrealized Appreciation (Depreciation)/Value |  | 482,967
ProShares Short VIX Short-Term Futures ETF [Member] | VIX Futures - Cboe, expires January 2026 [Member] |  |
Schedule of Investments [Line Items] |  |
Number of Contracts | Contract | 3,791 |
Notional Amount at Value | $ 62,674,708 |
Unrealized Appreciation (Depreciation)/Value | $ 14,546,344 |
ProShares Short VIX Short-Term Futures ETF [Member] | VIX Futures - Cboe, expires February 2026 [Member] |  |
Schedule of Investments [Line Items] |  |
Number of Contracts | Contract | 3,153 |
Notional Amount at Value | $ 58,437,702 |
Unrealized Appreciation (Depreciation)/Value | 1,153,253 |
ProShares UltraShort Bloomberg Crude Oil [Member] |  |
Schedule of Investments [Line Items] |  |
Unrealized Appreciation (Depreciation)/Value | $ 12,025,118 | $ (1,655,392)
ProShares UltraShort Bloomberg Crude Oil [Member] | WTI Crude Oil - NYMEX, expires March 2025 [Member] |  |
Schedule of Investments [Line Items] |  |
Number of Contracts | Contract |  | 1,140
Notional Amount at Value |  | $ 81,225,000
Unrealized Appreciation (Depreciation)/Value |  | $ (2,847,040)
ProShares UltraShort Bloomberg Crude Oil [Member] | WTI Crude Oil - NYMEX, expires June 2025 [Member] |  |
Schedule of Investments [Line Items] |  |
Number of Contracts | Contract |  | 1,167
Notional Amount at Value |  | $ 81,888,390
Unrealized Appreciation (Depreciation)/Value |  | $ 1,888,681
ProShares UltraShort Bloomberg Crude Oil [Member] | WTI Crude Oil - NYMEX, expires December 2025 [Member] |  |
Schedule of Investments [Line Items] |  |
Number of Contracts | Contract |  | 1,186
Notional Amount at Value |  | $ 80,873,340
Unrealized Appreciation (Depreciation)/Value |  | $ (697,033)
ProShares UltraShort Bloomberg Crude Oil [Member] | WTI Crude Oil - NYMEX, expires March 2026 [Member] |  |
Schedule of Investments [Line Items] |  |
Number of Contracts | Contract | 1,035 |
Notional Amount at Value | $ 59,222,700 |
Unrealized Appreciation (Depreciation)/Value | $ 1,030,474 |
ProShares UltraShort Bloomberg Crude Oil [Member] | WTI Crude Oil - NYMEX, expires June 2026 [Member] |  |
Schedule of Investments [Line Items] |  |
Number of Contracts | Contract | 1,048 |
Notional Amount at Value | $ 59,746,480 |
Unrealized Appreciation (Depreciation)/Value | $ 6,670,215 |
ProShares UltraShort Bloomberg Crude Oil [Member] | WTI Crude Oil - NYMEX, expires December 2026 [Member] |  |
Schedule of Investments [Line Items] |  |
Number of Contracts | Contract | 1,053 |
Notional Amount at Value | $ 59,936,760 |
Unrealized Appreciation (Depreciation)/Value | $ 4,324,429 |
ProShares UltraShort Bloomberg Natural Gas [Member] | Natural Gas - NYMEX, expires March 2026 [Member] |  |
Schedule of Investments [Line Items] |  |
Number of Contracts | Contract | 9,225 |
Notional Amount at Value | $ 288,742,500 |
Unrealized Appreciation (Depreciation)/Value | $ 53,943,537 |
ProShares UltraShort Bloomberg Natural Gas [Member] | Natural Gas - NYMEX, expires March 2025 [Member] |  |
Schedule of Investments [Line Items] |  |
Number of Contracts | Contract |  | 16,846
Notional Amount at Value |  | $ 521,889,080
Unrealized Appreciation (Depreciation)/Value |  | $ (26,130,504)
ProShares UltraShort Gold [Member] | Gold Futures - COMEX, expires February 2025 [Member] |  |
Schedule of Investments [Line Items] |  |
Number of Contracts | Contract |  | 48
Notional Amount at Value |  | $ 12,676,800
Unrealized Appreciation (Depreciation)/Value |  | $ 121,056
ProShares UltraShort Gold [Member] | Gold Futures - COMEX, expires February 2026 [Member] |  |
Schedule of Investments [Line Items] |  |
Number of Contracts | Contract | 168 |
Notional Amount at Value | $ 72,930,480 |
Unrealized Appreciation (Depreciation)/Value | $ (855,047) |
ProShares UltraShort Silver [Member] | Silver Futures - COMEX, expires March 2025 [Member] |  |
Schedule of Investments [Line Items] |  |
Number of Contracts | Contract |  | 72
Notional Amount at Value |  | $ 10,527,120
Unrealized Appreciation (Depreciation)/Value |  | $ 511,915
ProShares UltraShort Silver [Member] | Silver Futures - COMEX, expires March 2026 [Member] |  |
Schedule of Investments [Line Items] |  |
Number of Contracts | Contract | 797 |
Notional Amount at Value | $ 281,352,955 |
Unrealized Appreciation (Depreciation)/Value | $ (9,278,851) |

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