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Schedule of Investments - Total Return Swap Agreements (Detail) - Swap Agreements [Member] - USD ($)
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
ProShares Ultra Bloomberg Crude Oil [Member]    
Schedule of Investments [Line Items]    
Unrealized Appreciation (Depreciation)/Value $ (11,151,121) [1] $ 38,215,610 [2]
ProShares Ultra Bloomberg Crude Oil [Member] | Citibank N.A. [Member] | WTI Crude Oil Subindex [Member] | Bloomberg [Member]    
Schedule of Investments [Line Items]    
Rate Paid (Received) 0.35% [1],[3] 0.35% [2],[4]
Termination Date Jan. 06, 2026 [1] Jan. 06, 2025 [2]
Notional Amount at Value [5] $ 46,937,391 [1] $ 150,153,809 [2]
Unrealized Appreciation (Depreciation)/Value $ (1,000,501) [1] $ 7,607,910 [2]
ProShares Ultra Bloomberg Crude Oil [Member] | Goldman Sachs International [Member] | WTI Crude Oil Subindex [Member] | Bloomberg [Member]    
Schedule of Investments [Line Items]    
Rate Paid (Received) 0.35% [1],[3] 0.35% [2],[4]
Termination Date Jan. 06, 2026 [1] Jan. 06, 2025 [2]
Notional Amount at Value [5] $ 203,679,867 [1] $ 237,329,164 [2]
Unrealized Appreciation (Depreciation)/Value $ (4,341,571) [1] $ 12,024,863 [2]
ProShares Ultra Bloomberg Crude Oil [Member] | Morgan Stanley & Co. International PLC [Member] | WTI Crude Oil Subindex [Member] | Bloomberg [Member]    
Schedule of Investments [Line Items]    
Rate Paid (Received) 0.35% [1],[3] 0.35% [2],[4]
Termination Date Jan. 06, 2026 [1] Jan. 06, 2025 [2]
Notional Amount at Value [5] $ 61,875,213 [1] $ 72,097,418 [2]
Unrealized Appreciation (Depreciation)/Value $ (1,318,911) [1] $ 3,652,992 [2]
ProShares Ultra Bloomberg Crude Oil [Member] | Societe Generale [Member] | WTI Crude Oil Subindex [Member] | Bloomberg [Member]    
Schedule of Investments [Line Items]    
Rate Paid (Received) 0.25% [1],[3] 0.25% [2],[4]
Termination Date Jan. 06, 2026 [1] Jan. 06, 2025 [2]
Notional Amount at Value [5] $ 154,606,778 [1] $ 180,148,868 [2]
Unrealized Appreciation (Depreciation)/Value $ (3,285,599) [1] $ 9,139,394 [2]
ProShares Ultra Bloomberg Crude Oil [Member] | UBS AG [Member] | WTI Crude Oil Subindex [Member] | Bloomberg [Member]    
Schedule of Investments [Line Items]    
Rate Paid (Received) 0.30% [1],[3] 0.30% [2],[4]
Termination Date Jan. 06, 2026 [1] Jan. 06, 2025 [2]
Notional Amount at Value [5] $ 56,594,982 [1] $ 114,210,193 [2]
Unrealized Appreciation (Depreciation)/Value (1,204,539) [1] 5,790,451 [2]
ProShares Ultra Gold [Member]    
Schedule of Investments [Line Items]    
Unrealized Appreciation (Depreciation)/Value $ 28,676,455 [1] $ (2,348,132) [2]
ProShares Ultra Gold [Member] | Citibank N.A. [Member] | Gold Subindex [Member] | Bloomberg [Member]    
Schedule of Investments [Line Items]    
Rate Paid (Received) [2] 0.25% [1],[3] 0.25% [4],[6]
Termination Date Jan. 06, 2026 [1] Jan. 06, 2025 [2]
Notional Amount at Value [2],[5] $ 575,555,005 [1] $ 139,739,974 [6]
Unrealized Appreciation (Depreciation)/Value $ 16,272,555 [1] $ (1,008,254) [2]
ProShares Ultra Gold [Member] | Goldman Sachs International [Member] | Gold Subindex [Member] | Bloomberg [Member]    
Schedule of Investments [Line Items]    
Rate Paid (Received) [2] 0.25% [1],[3] 0.25% [4],[6]
Termination Date Jan. 06, 2026 [1] Jan. 06, 2025 [2]
Notional Amount at Value [2],[5] $ 103,454,092 [1] $ 66,372,068 [6]
Unrealized Appreciation (Depreciation)/Value $ 2,924,937 [1] $ (478,889) [2]
ProShares Ultra Gold [Member] | UBS AG [Member] | Gold Subindex [Member] | Bloomberg [Member]    
Schedule of Investments [Line Items]    
Rate Paid (Received) [2] 0.25% [1],[3] 0.25% [4],[6]
Termination Date Jan. 06, 2026 [1] Jan. 06, 2025 [2]
Notional Amount at Value [2],[5] $ 335,267,828 [1] $ 119,329,710 [6]
Unrealized Appreciation (Depreciation)/Value 9,478,963 [1] (860,989) [2]
ProShares Ultra Silver [Member]    
Schedule of Investments [Line Items]    
Unrealized Appreciation (Depreciation)/Value $ 313,913,258 [1] $ (52,518,908) [2]
ProShares Ultra Silver [Member] | Citibank N.A. [Member] | Silver Subindex [Member] | Bloomberg [Member]    
Schedule of Investments [Line Items]    
Rate Paid (Received) 0.25% [1],[3] 0.25% [2],[4]
Termination Date Jan. 06, 2026 [1] Jan. 06, 2025 [2]
Notional Amount at Value [5] $ 1,174,123,738 [1] $ 290,595,744 [2]
Unrealized Appreciation (Depreciation)/Value $ 149,280,584 [1] $ (23,367,397) [2]
ProShares Ultra Silver [Member] | Goldman Sachs International [Member] | Silver Subindex [Member] | Bloomberg [Member]    
Schedule of Investments [Line Items]    
Rate Paid (Received) 0.30% [1],[3] 0.30% [2],[4]
Termination Date Jan. 06, 2026 [1] Jan. 06, 2025 [2]
Notional Amount at Value [5] $ 58,561,398 [1] $ 25,577,165 [2]
Unrealized Appreciation (Depreciation)/Value $ 10,108,427 [1] $ (2,057,658) [2]
ProShares Ultra Silver [Member] | Morgan Stanley & Co. International PLC [Member] | Silver Subindex [Member] | Bloomberg [Member]    
Schedule of Investments [Line Items]    
Rate Paid (Received) 0.30% [1],[3] 0.30% [2],[4]
Termination Date Jan. 06, 2026 [1] Jan. 06, 2025 [2]
Notional Amount at Value [5] $ 397,316,457 [1] $ 173,531,177 [2]
Unrealized Appreciation (Depreciation)/Value $ 68,581,771 [1] $ (13,960,418) [2]
ProShares Ultra Silver [Member] | UBS AG [Member] | Silver Subindex [Member] | Bloomberg [Member]    
Schedule of Investments [Line Items]    
Rate Paid (Received) 0.25% [1],[3] 0.25% [2],[4]
Termination Date Jan. 06, 2026 [1] Jan. 06, 2025 [2]
Notional Amount at Value [5] $ 963,824,275 [1] $ 163,326,725 [2]
Unrealized Appreciation (Depreciation)/Value 85,942,476 [1] (13,133,435) [2]
ProShares UltraShort Gold [Member]    
Schedule of Investments [Line Items]    
Unrealized Appreciation (Depreciation)/Value $ (2,568,196) [1] $ 141,581 [2]
ProShares UltraShort Gold [Member] | Citibank N.A. [Member] | Gold Subindex [Member] | Bloomberg [Member]    
Schedule of Investments [Line Items]    
Rate Paid (Received) 0.25% [1],[3] 0.25% [2],[4]
Termination Date Jan. 06, 2026 [1] Jan. 06, 2025 [2]
Notional Amount at Value [2],[5]   $ (4,743,641)
Notional Amount at Value [1],[5] $ (65,194,272)  
Unrealized Appreciation (Depreciation)/Value $ (1,863,184) [1] $ 32,589 [2]
ProShares UltraShort Gold [Member] | Goldman Sachs International [Member] | Gold Subindex [Member] | Bloomberg [Member]    
Schedule of Investments [Line Items]    
Rate Paid (Received) 0.20% [1],[3] 0.20% [2],[4]
Termination Date Jan. 06, 2026 [1] Jan. 06, 2025 [2]
Notional Amount at Value [2],[5]   $ (6,217,082)
Notional Amount at Value [1],[5] $ (9,690,561)  
Unrealized Appreciation (Depreciation)/Value $ (276,649) [1] $ 42,928 [2]
ProShares UltraShort Gold [Member] | UBS AG [Member] | Gold Subindex [Member] | Bloomberg [Member]    
Schedule of Investments [Line Items]    
Rate Paid (Received) 0.25% [1],[3] 0.25% [2],[4]
Termination Date Jan. 06, 2026 [1] Jan. 06, 2025 [2]
Notional Amount at Value [2],[5]   $ (9,616,126)
Notional Amount at Value [1],[5] $ (14,988,649)  
Unrealized Appreciation (Depreciation)/Value (428,363) [1] 66,064 [2]
Proshares Ultra Short Silver [Member]    
Schedule of Investments [Line Items]    
Unrealized Appreciation (Depreciation)/Value $ (4,320,147) [1] $ 2,954,018 [2]
Proshares Ultra Short Silver [Member] | Citibank N.A. [Member] | Silver Subindex [Member] | Bloomberg [Member]    
Schedule of Investments [Line Items]    
Rate Paid (Received) 0.25% [1],[3] 0.25% [2],[4]
Termination Date Jan. 06, 2026 [1] Jan. 06, 2025 [2]
Notional Amount at Value [2],[5]   $ (20,658,992)
Notional Amount at Value [1],[5] $ (52,154,405)  
Unrealized Appreciation (Depreciation)/Value $ (1,454,002) [1] $ 1,653,589 [2]
Proshares Ultra Short Silver [Member] | Goldman Sachs International [Member] | Silver Subindex [Member] | Bloomberg [Member]    
Schedule of Investments [Line Items]    
Rate Paid (Received) 0.25% [1],[3] 0.25% [2],[4]
Termination Date Jan. 06, 2026 [1] Jan. 06, 2025 [2]
Notional Amount at Value [2],[5]   $ (11,342,358)
Notional Amount at Value [1],[5] $ (25,969,429)  
Unrealized Appreciation (Depreciation)/Value $ (4,490,093) [1] $ 907,867 [2]
Proshares Ultra Short Silver [Member] | Morgan Stanley & Co. International PLC [Member] | Silver Subindex [Member] | Bloomberg [Member]    
Schedule of Investments [Line Items]    
Rate Paid (Received) 0.30% [1],[3] 0.30% [2],[4]
Termination Date Jan. 06, 2026 [1] Jan. 06, 2025 [2]
Notional Amount at Value [2],[5]   $ (1,564,559)
Notional Amount at Value [1],[5] $ (3,582,209)  
Unrealized Appreciation (Depreciation)/Value $ (619,454) [1] $ 125,172 [2]
Proshares Ultra Short Silver [Member] | UBS AG [Member] | Silver Subindex [Member] | Bloomberg [Member]    
Schedule of Investments [Line Items]    
Rate Paid (Received) 0.25% [1],[3] 0.25% [2],[4]
Termination Date Jan. 06, 2026 [1] Jan. 06, 2025 [2]
Notional Amount at Value [2],[5]   $ (3,340,644)
Notional Amount at Value [1],[5] $ (30,813,610)  
Unrealized Appreciation (Depreciation)/Value $ 2,243,402 [1] $ 267,390 [2]
[1] The positions and counterparties herein are as of December 31, 2025. The Fund continually evaluates different counterparties for their transactions and counterparties are subject to change. New counterparties can be added at any time.
[2] The positions and counterparties herein are as of December 31, 2024. The Fund continually evaluates different counterparties for their transactions and counterparties are subject to change. New counterparties can be added at any time.
[3] Reflects the floating financing rate, as of December 31, 2025, on the notional amount of the swap agreement paid to the counterparty or received from the counterparty, excluding any commissions. Total Return Swap Agreements payment is due at termination/maturity.
[4] Reflects the floating financing rate, as of December 31, 2024, on the notional amount of the swap agreement paid to the counterparty or received from the counterparty, excluding any commissions. Total Return Swap Agreements payment is due at termination/maturity.
[5] For swap agreements, a positive amount represents “long” exposure to the benchmark index. A negative amount represents “short” exposure to the benchmark index.
[6] The positions and counterparties herein are as of December 31, 2023. The Fund continually evaluates different counterparties for their transactions and counterparties are subject to change. New counterparties can be added at any time.