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Schedule of Investments - Short-Term U.S. Government and Agency Obligations (Parenthetical) (Detail) - USD ($) | 12 Months Ended
--- | ---
Dec. 31, 2025 | Dec. 31, 2024
Investment, Identifier [Axis]: U.S. Government Agencies Short-term Debt Securities | ProShares Short VIX Short-Term Futures ETF |  |
Schedule of Investments [Line Items] |  |
Short-term U.S. government and agency obligations percentage of shareholders' equity | 25.00% | 9.00%
Total short-term U.S. government and agency obligations, cost | $ 59,898,070 | $ 24,931,067
Investment, Identifier [Axis]: U.S. Government Agencies Short-term Debt Securities | ProShares Short VIX Short-Term Futures ETF | U.S. Treasury Bills 3.699% due 02/03/26 |  |
Schedule of Investments [Line Items] |  |
Interest rate | 3.699% |
Investment, maturity date | Feb. 03, 2026 |
Discount rate at the time of purchase | true |
Investment, Identifier [Axis]: U.S. Government Agencies Short-term Debt Securities | ProShares Short VIX Short-Term Futures ETF | U.S. Treasury Bills 3.986% due 01/06/26 |  |
Schedule of Investments [Line Items] |  |
Interest rate | 3.986% |
Investment, maturity date | Jan. 06, 2026 |
Discount rate at the time of purchase | true |
Investment, Identifier [Axis]: U.S. Government Agencies Short-term Debt Securities | ProShares Short VIX Short-Term Futures ETF | U.S. Treasury Bills 4.562% due 01/23/25 |  |
Schedule of Investments [Line Items] |  |
Interest rate |  | 4.562%
Investment, maturity date |  | Jan. 23, 2025
Discount rate at the time of purchase |  | true
Investment, Identifier [Axis]: U.S. Government Agencies Short-term Debt Securities | ProShares Ultra Bloomberg Crude Oil |  |
Schedule of Investments [Line Items] |  |
Short-term U.S. government and agency obligations percentage of shareholders' equity | 39.00% | 19.00%
Total short-term U.S. government and agency obligations, cost | $ 149,544,793 | $ 99,724,267
Investment, Identifier [Axis]: U.S. Government Agencies Short-term Debt Securities | ProShares Ultra Bloomberg Crude Oil | U.S. Treasury Bills 3.666% due 02/10/26 |  |
Schedule of Investments [Line Items] |  |
Interest rate | 3.666% |
Investment, maturity date | Feb. 10, 2026 |
Discount rate at the time of purchase | true |
Investment, Identifier [Axis]: U.S. Government Agencies Short-term Debt Securities | ProShares Ultra Bloomberg Crude Oil | U.S. Treasury Bills 3.699% due 02/03/26 |  |
Schedule of Investments [Line Items] |  |
Interest rate | 3.699% |
Investment, maturity date | Feb. 03, 2026 |
Discount rate at the time of purchase | true |
Investment, Identifier [Axis]: U.S. Government Agencies Short-term Debt Securities | ProShares Ultra Bloomberg Crude Oil | U.S. Treasury Bills 3.868% due 02/12/26 |  |
Schedule of Investments [Line Items] |  |
Interest rate | 3.868% |
Investment, maturity date | Feb. 12, 2026 |
Discount rate at the time of purchase | true |
Investment, Identifier [Axis]: U.S. Government Agencies Short-term Debt Securities | ProShares Ultra Bloomberg Crude Oil | U.S. Treasury Bills 3.913% due 01/13/26 |  |
Schedule of Investments [Line Items] |  |
Interest rate | 3.913% |
Investment, maturity date | Jan. 13, 2026 |
Discount rate at the time of purchase | true |
Investment, Identifier [Axis]: U.S. Government Agencies Short-term Debt Securities | ProShares Ultra Bloomberg Crude Oil | U.S. Treasury Bills 3.986% due 01/06/26 |  |
Schedule of Investments [Line Items] |  |
Interest rate | 3.986% |
Investment, maturity date | Jan. 06, 2026 |
Discount rate at the time of purchase | true |
Investment, Identifier [Axis]: U.S. Government Agencies Short-term Debt Securities | ProShares Ultra Bloomberg Crude Oil | U.S. Treasury Bills 4.562% due 01/23/25 |  |
Schedule of Investments [Line Items] |  |
Interest rate |  | 4.562%
Investment, maturity date |  | Jan. 23, 2025
Discount rate at the time of purchase |  | true
Investment, Identifier [Axis]: U.S. Government Agencies Short-term Debt Securities | ProShares Ultra Bloomberg Natural Gas |  |
Schedule of Investments [Line Items] |  |
Short-term U.S. government and agency obligations percentage of shareholders' equity | 44.00% | 25.00%
Total short-term U.S. government and agency obligations, cost | $ 234,217,281 | $ 99,724,267
Investment, Identifier [Axis]: U.S. Government Agencies Short-term Debt Securities | ProShares Ultra Bloomberg Natural Gas | U.S. Treasury Bills 3.666% due 02/10/26 |  |
Schedule of Investments [Line Items] |  |
Interest rate | 3.666% |
Investment, maturity date | Feb. 10, 2026 |
Discount rate at the time of purchase | true |
Investment, Identifier [Axis]: U.S. Government Agencies Short-term Debt Securities | ProShares Ultra Bloomberg Natural Gas | U.S. Treasury Bills 3.699% due 02/03/26 |  |
Schedule of Investments [Line Items] |  |
Interest rate | 3.699% |
Investment, maturity date | Feb. 03, 2026 |
Discount rate at the time of purchase | true |
Investment, Identifier [Axis]: U.S. Government Agencies Short-term Debt Securities | ProShares Ultra Bloomberg Natural Gas | U.S. Treasury Bills 3.868% due 02/12/26 |  |
Schedule of Investments [Line Items] |  |
Interest rate | 3.868% |
Investment, maturity date | Feb. 12, 2026 |
Discount rate at the time of purchase | true |
Investment, Identifier [Axis]: U.S. Government Agencies Short-term Debt Securities | ProShares Ultra Bloomberg Natural Gas | U.S. Treasury Bills 3.913% due 01/13/26 |  |
Schedule of Investments [Line Items] |  |
Interest rate | 3.913% |
Investment, maturity date | Jan. 13, 2026 |
Discount rate at the time of purchase | true |
Investment, Identifier [Axis]: U.S. Government Agencies Short-term Debt Securities | ProShares Ultra Bloomberg Natural Gas | U.S. Treasury Bills 3.986% due 01/06/26 |  |
Schedule of Investments [Line Items] |  |
Interest rate | 3.986% |
Investment, maturity date | Jan. 06, 2026 |
Discount rate at the time of purchase | true |
Investment, Identifier [Axis]: U.S. Government Agencies Short-term Debt Securities | ProShares Ultra Bloomberg Natural Gas | U.S. Treasury Bills 4.562% due 01/23/25 |  |
Schedule of Investments [Line Items] |  |
Interest rate |  | 4.562%
Investment, maturity date |  | Jan. 23, 2025
Discount rate at the time of purchase |  | true
Investment, Identifier [Axis]: U.S. Government Agencies Short-term Debt Securities | ProShares Ultra Gold |  |
Schedule of Investments [Line Items] |  |
Short-term U.S. government and agency obligations percentage of shareholders' equity | 54.00% | 26.00%
Total short-term U.S. government and agency obligations, cost | $ 548,601,553 | $ 74,793,200
Investment, Identifier [Axis]: U.S. Government Agencies Short-term Debt Securities | ProShares Ultra Gold | U.S. Treasury Bills 3.666% due 02/10/26 |  |
Schedule of Investments [Line Items] |  |
Interest rate | 3.666% |
Investment, maturity date | Feb. 10, 2026 |
Discount rate at the time of purchase | true |
Investment, Identifier [Axis]: U.S. Government Agencies Short-term Debt Securities | ProShares Ultra Gold | U.S. Treasury Bills 3.699% due 02/03/26 |  |
Schedule of Investments [Line Items] |  |
Interest rate | 3.699% |
Investment, maturity date | Feb. 03, 2026 |
Discount rate at the time of purchase | true |
Investment, Identifier [Axis]: U.S. Government Agencies Short-term Debt Securities | ProShares Ultra Gold | U.S. Treasury Bills 3.868% due 02/12/26 |  |
Schedule of Investments [Line Items] |  |
Interest rate | 3.868% |
Investment, maturity date | Feb. 12, 2026 |
Discount rate at the time of purchase | true |
Investment, Identifier [Axis]: U.S. Government Agencies Short-term Debt Securities | ProShares Ultra Gold | U.S. Treasury Bills 3.913% due 01/13/26 |  |
Schedule of Investments [Line Items] |  |
Interest rate | 3.913% |
Investment, maturity date | Jan. 13, 2026 |
Discount rate at the time of purchase | true |
Investment, Identifier [Axis]: U.S. Government Agencies Short-term Debt Securities | ProShares Ultra Gold | U.S. Treasury Bills 3.986% due 01/06/26 |  |
Schedule of Investments [Line Items] |  |
Interest rate | 3.986% |
Investment, maturity date | Jan. 06, 2026 |
Discount rate at the time of purchase | true |
Investment, Identifier [Axis]: U.S. Government Agencies Short-term Debt Securities | ProShares Ultra Gold | U.S. Treasury Bills 4.562% due 01/23/25 |  |
Schedule of Investments [Line Items] |  |
Interest rate |  | 4.562%
Investment, maturity date |  | Jan. 23, 2025
Discount rate at the time of purchase |  | true
Investment, Identifier [Axis]: U.S. Government Agencies Short-term Debt Securities | ProShares Ultra Silver |  |
Schedule of Investments [Line Items] |  |
Short-term U.S. government and agency obligations percentage of shareholders' equity | 43.00% | 22.00%
Total short-term U.S. government and agency obligations, cost | $ 967,111,002 | $ 124,655,333
Investment, Identifier [Axis]: U.S. Government Agencies Short-term Debt Securities | ProShares Ultra Silver | U.S. Treasury Bills 3.666% due 02/10/26 |  |
Schedule of Investments [Line Items] |  |
Interest rate | 3.666% |
Investment, maturity date | Feb. 10, 2026 |
Discount rate at the time of purchase | true |
Investment, Identifier [Axis]: U.S. Government Agencies Short-term Debt Securities | ProShares Ultra Silver | U.S. Treasury Bills 3.699% due 02/03/26 |  |
Schedule of Investments [Line Items] |  |
Interest rate | 3.699% |
Investment, maturity date | Feb. 03, 2026 |
Discount rate at the time of purchase | true |
Investment, Identifier [Axis]: U.S. Government Agencies Short-term Debt Securities | ProShares Ultra Silver | U.S. Treasury Bills 3.868% due 02/12/26 |  |
Schedule of Investments [Line Items] |  |
Interest rate | 3.868% |
Investment, maturity date | Feb. 12, 2026 |
Discount rate at the time of purchase | true |
Investment, Identifier [Axis]: U.S. Government Agencies Short-term Debt Securities | ProShares Ultra Silver | U.S. Treasury Bills 3.871% due 01/27/26 |  |
Schedule of Investments [Line Items] |  |
Interest rate | 3.871% |
Investment, maturity date | Jan. 27, 2026 |
Discount rate at the time of purchase | true |
Investment, Identifier [Axis]: U.S. Government Agencies Short-term Debt Securities | ProShares Ultra Silver | U.S. Treasury Bills 3.913% due 01/13/26 |  |
Schedule of Investments [Line Items] |  |
Interest rate | 3.913% |
Investment, maturity date | Jan. 13, 2026 |
Discount rate at the time of purchase | true |
Investment, Identifier [Axis]: U.S. Government Agencies Short-term Debt Securities | ProShares Ultra Silver | U.S. Treasury Bills 3.986% due 01/06/26 |  |
Schedule of Investments [Line Items] |  |
Interest rate | 3.986% |
Investment, maturity date | Jan. 06, 2026 |
Discount rate at the time of purchase | true |
Investment, Identifier [Axis]: U.S. Government Agencies Short-term Debt Securities | ProShares Ultra Silver | U.S. Treasury Bills 4.562% due 01/23/25 |  |
Schedule of Investments [Line Items] |  |
Interest rate |  | 4.562%
Investment, maturity date |  | Jan. 23, 2025
Discount rate at the time of purchase |  | true
Investment, Identifier [Axis]: U.S. Government Agencies Short-term Debt Securities | ProShares Ultra VIX Short-Term Futures ETF |  |
Schedule of Investments [Line Items] |  |
Short-term U.S. government and agency obligations percentage of shareholders' equity | 25.00% | 9.00%
Total short-term U.S. government and agency obligations, cost | $ 99,753,597 | $ 24,931,067
Investment, Identifier [Axis]: U.S. Government Agencies Short-term Debt Securities | ProShares Ultra VIX Short-Term Futures ETF | U.S. Treasury Bills 3.699% due 02/03/26 |  |
Schedule of Investments [Line Items] |  |
Interest rate | 3.699% |
Investment, maturity date | Feb. 03, 2026 |
Discount rate at the time of purchase | true |
Investment, Identifier [Axis]: U.S. Government Agencies Short-term Debt Securities | ProShares Ultra VIX Short-Term Futures ETF | U.S. Treasury Bills 3.868% due 02/12/26 |  |
Schedule of Investments [Line Items] |  |
Interest rate | 3.868% |
Investment, maturity date | Feb. 12, 2026 |
Discount rate at the time of purchase | true |
Investment, Identifier [Axis]: U.S. Government Agencies Short-term Debt Securities | ProShares Ultra VIX Short-Term Futures ETF | U.S. Treasury Bills 3.913% due 01/13/26 |  |
Schedule of Investments [Line Items] |  |
Interest rate | 3.913% |
Investment, maturity date | Jan. 13, 2026 |
Discount rate at the time of purchase | true |
Investment, Identifier [Axis]: U.S. Government Agencies Short-term Debt Securities | ProShares Ultra VIX Short-Term Futures ETF | U.S. Treasury Bills 3.986% due 01/06/26 |  |
Schedule of Investments [Line Items] |  |
Interest rate | 3.986% |
Investment, maturity date | Jan. 06, 2026 |
Discount rate at the time of purchase | true |
Investment, Identifier [Axis]: U.S. Government Agencies Short-term Debt Securities | ProShares Ultra VIX Short-Term Futures ETF | U.S. Treasury Bills 4.562% due 01/23/25 |  |
Schedule of Investments [Line Items] |  |
Interest rate |  | 4.562%
Investment, maturity date |  | Jan. 23, 2025
Discount rate at the time of purchase |  | true
Investment, Identifier [Axis]: U.S. Government Agencies Short-term Debt Securities | ProShares UltraShort Bloomberg Crude Oil |  |
Schedule of Investments [Line Items] |  |
Short-term U.S. government and agency obligations percentage of shareholders' equity | 50.00% |
Total short-term U.S. government and agency obligations, cost | $ 44,906,073 |
Investment, Identifier [Axis]: U.S. Government Agencies Short-term Debt Securities | ProShares UltraShort Bloomberg Crude Oil | U.S. Treasury Bills 3.699% due 02/03/26 |  |
Schedule of Investments [Line Items] |  |
Interest rate | 3.699% |
Investment, maturity date | Feb. 03, 2026 |
Discount rate at the time of purchase | true |
Investment, Identifier [Axis]: U.S. Government Agencies Short-term Debt Securities | ProShares UltraShort Bloomberg Crude Oil | U.S. Treasury Bills 3.986% due 01/06/26 |  |
Schedule of Investments [Line Items] |  |
Interest rate | 3.986% |
Investment, maturity date | Jan. 06, 2026 |
Discount rate at the time of purchase | true |
Investment, Identifier [Axis]: U.S. Government Agencies Short-term Debt Securities | ProShares UltraShort Bloomberg Natural Gas |  |
Schedule of Investments [Line Items] |  |
Short-term U.S. government and agency obligations percentage of shareholders' equity | 48.00% |
Total short-term U.S. government and agency obligations, cost | $ 69,807,867 |
Investment, Identifier [Axis]: U.S. Government Agencies Short-term Debt Securities | ProShares UltraShort Bloomberg Natural Gas | U.S. Treasury Bills 3.699% due 02/03/26 |  |
Schedule of Investments [Line Items] |  |
Interest rate | 3.699% |
Investment, maturity date | Feb. 03, 2026 |
Discount rate at the time of purchase | true |
Investment, Identifier [Axis]: U.S. Government Agencies Short-term Debt Securities | ProShares UltraShort Bloomberg Natural Gas | U.S. Treasury Bills 3.913% due 01/13/26 |  |
Schedule of Investments [Line Items] |  |
Interest rate | 3.913% |
Investment, maturity date | Jan. 13, 2026 |
Discount rate at the time of purchase | true |
Investment, Identifier [Axis]: U.S. Government Agencies Short-term Debt Securities | ProShares VIX Short-Term Futures ETF |  |
Schedule of Investments [Line Items] |  |
Short-term U.S. government and agency obligations percentage of shareholders' equity | 37.00% | 19.00%
Total short-term U.S. government and agency obligations, cost | $ 84,730,287 | $ 24,931,067
Investment, Identifier [Axis]: U.S. Government Agencies Short-term Debt Securities | ProShares VIX Short-Term Futures ETF | U.S. Treasury Bills 3.699% due 02/03/26 |  |
Schedule of Investments [Line Items] |  |
Interest rate | 3.699% |
Investment, maturity date | Feb. 03, 2026 |
Discount rate at the time of purchase | true |
Investment, Identifier [Axis]: U.S. Government Agencies Short-term Debt Securities | ProShares VIX Short-Term Futures ETF | U.S. Treasury Bills 3.868% due 02/12/26 |  |
Schedule of Investments [Line Items] |  |
Interest rate | 3.868% |
Investment, maturity date | Feb. 12, 2026 |
Discount rate at the time of purchase | true |
Investment, Identifier [Axis]: U.S. Government Agencies Short-term Debt Securities | ProShares VIX Short-Term Futures ETF | U.S. Treasury Bills 3.913% due 01/13/26 |  |
Schedule of Investments [Line Items] |  |
Interest rate | 3.913% |
Investment, maturity date | Jan. 13, 2026 |
Discount rate at the time of purchase | true |
Investment, Identifier [Axis]: U.S. Government Agencies Short-term Debt Securities | ProShares VIX Short-Term Futures ETF | U.S. Treasury Bills 4.562% due 01/23/25 |  |
Schedule of Investments [Line Items] |  |
Interest rate |  | 4.562%
Investment, maturity date |  | Jan. 23, 2025
Discount rate at the time of purchase |  | true

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