v3.26.1
Schedule of Investments - Total Return Swap Agreements (Detail)
 6 Months Ended
Jun. 30, 2026
USD ($)
 [1]
Schedule of Investments [Line Items]  
Termination Date Jul. 06, 2026
Swap Agreements [Member] | ProShares Ultra Bloomberg Crude Oil [Member]  
Schedule of Investments [Line Items]  
Unrealized Appreciation (Depreciation)/Value $ (75,305,700)
Swap Agreements [Member] | ProShares Ultra Bloomberg Crude Oil [Member] | Long [Member]  
Schedule of Investments [Line Items]  
Unrealized Appreciation (Depreciation)/Value 391,156
Swap Agreements [Member] | ProShares Ultra Bloomberg Crude Oil [Member] | Short [Member]  
Schedule of Investments [Line Items]  
Unrealized Appreciation (Depreciation)/Value $ (75,696,856)
Swap Agreements [Member] | 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% [2]
Termination Date Jul. 06, 2026
Notional Amount at Value $ 62,978,759 [3]
Unrealized Appreciation (Depreciation)/Value $ (2,576,150)
Swap Agreements [Member] | 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% [2]
Termination Date Jul. 06, 2026
Notional Amount at Value $ 163,484,486 [3]
Unrealized Appreciation (Depreciation)/Value $ (32,233,988)
Swap Agreements [Member] | 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% [2]
Termination Date Jul. 06, 2026
Notional Amount at Value $ 207,445,344 [3]
Unrealized Appreciation (Depreciation)/Value $ (40,886,718)
Swap Agreements [Member] | 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% [2]
Termination Date Jul. 06, 2026
Notional Amount at Value $ 75,936,938 [3]
Unrealized Appreciation (Depreciation)/Value 391,156
Swap Agreements [Member] | ProShares Ultra Gold [Member] | Short [Member]  
Schedule of Investments [Line Items]  
Unrealized Appreciation (Depreciation)/Value $ (32,882,489)
Swap Agreements [Member] | ProShares Ultra Gold [Member] | Citibank N.A. [Member] | Gold Subindex [Member] | Bloomberg [Member]  
Schedule of Investments [Line Items]  
Rate Paid (Received) 0.25% [2]
Notional Amount at Value $ 513,880,285 [3]
Unrealized Appreciation (Depreciation)/Value $ (20,923,069)
Swap Agreements [Member] | ProShares Ultra Gold [Member] | Goldman Sachs International [Member] | Gold Subindex [Member] | Bloomberg [Member]  
Schedule of Investments [Line Items]  
Rate Paid (Received) 0.25% [2]
Notional Amount at Value $ 94,104,736 [3]
Unrealized Appreciation (Depreciation)/Value $ (7,586,111)
Swap Agreements [Member] | ProShares Ultra Gold [Member] | UBS AG [Member] | Gold Subindex [Member] | Bloomberg [Member]  
Schedule of Investments [Line Items]  
Rate Paid (Received) 0.25% [2]
Notional Amount at Value $ 304,968,995 [3]
Unrealized Appreciation (Depreciation)/Value (4,373,309)
Swap Agreements [Member] | ProShares Ultra Silver [Member]  
Schedule of Investments [Line Items]  
Unrealized Appreciation (Depreciation)/Value (129,195,651)
Swap Agreements [Member] | ProShares Ultra Silver [Member] | Long [Member]  
Schedule of Investments [Line Items]  
Unrealized Appreciation (Depreciation)/Value 2,869,644
Swap Agreements [Member] | ProShares Ultra Silver [Member] | Short [Member]  
Schedule of Investments [Line Items]  
Unrealized Appreciation (Depreciation)/Value $ (132,065,295)
Swap Agreements [Member] | ProShares Ultra Silver [Member] | Citibank N.A. [Member] | Silver Subindex [Member] | Bloomberg [Member]  
Schedule of Investments [Line Items]  
Rate Paid (Received) 0.25% [2]
Termination Date Jul. 06, 2026
Notional Amount at Value $ 776,411,607 [3]
Unrealized Appreciation (Depreciation)/Value $ (79,642,009)
Swap Agreements [Member] | ProShares Ultra Silver [Member] | Goldman Sachs International [Member] | Silver Subindex [Member] | Bloomberg [Member]  
Schedule of Investments [Line Items]  
Rate Paid (Received) 1.50% [2]
Termination Date Jul. 06, 2026
Notional Amount at Value $ 172,913,127 [3]
Unrealized Appreciation (Depreciation)/Value $ (26,627,453)
Swap Agreements [Member] | ProShares Ultra Silver [Member] | Morgan Stanley & Co. International PLC [Member] | Silver Subindex [Member] | Bloomberg [Member]  
Schedule of Investments [Line Items]  
Rate Paid (Received) 0.80% [2]
Termination Date Jul. 06, 2026
Notional Amount at Value $ 168,043,596 [3]
Unrealized Appreciation (Depreciation)/Value $ (25,795,833)
Swap Agreements [Member] | ProShares Ultra Silver [Member] | UBS AG [Member] | Silver Subindex [Member] | Bloomberg [Member]  
Schedule of Investments [Line Items]  
Rate Paid (Received) 0.36% [2]
Termination Date Jul. 06, 2026
Notional Amount at Value $ 699,997,668 [3]
Unrealized Appreciation (Depreciation)/Value 2,869,644
Swap Agreements [Member] | ProShares UltraShort Gold [Member]  
Schedule of Investments [Line Items]  
Unrealized Appreciation (Depreciation)/Value 2,918,311
Swap Agreements [Member] | ProShares UltraShort Gold [Member] | Long [Member]  
Schedule of Investments [Line Items]  
Unrealized Appreciation (Depreciation)/Value $ 2,918,311
Swap Agreements [Member] | ProShares UltraShort Gold [Member] | Citibank N.A. [Member] | Gold Subindex [Member] | Bloomberg [Member]  
Schedule of Investments [Line Items]  
Rate Paid (Received) 0.25% [2]
Termination Date Jul. 06, 2026
Notional Amount at Value $ (49,641,886) [3]
Unrealized Appreciation (Depreciation)/Value $ 2,015,547
Swap Agreements [Member] | ProShares UltraShort Gold [Member] | Goldman Sachs International [Member] | Gold Subindex [Member] | Bloomberg [Member]  
Schedule of Investments [Line Items]  
Rate Paid (Received) 0.20% [2]
Termination Date Jul. 06, 2026
Notional Amount at Value $ (8,814,805) [3]
Unrealized Appreciation (Depreciation)/Value $ 708,009
Swap Agreements [Member] | ProShares UltraShort Gold [Member] | UBS AG [Member] | Gold Subindex [Member] | Bloomberg [Member]  
Schedule of Investments [Line Items]  
Rate Paid (Received) 0.25% [2]
Termination Date Jul. 06, 2026
Notional Amount at Value $ (13,634,094) [3]
Unrealized Appreciation (Depreciation)/Value 194,755
Swap Agreements [Member] | Proshares UltraShort Silver [Member]  
Schedule of Investments [Line Items]  
Unrealized Appreciation (Depreciation)/Value 5,352,880
Swap Agreements [Member] | Proshares UltraShort Silver [Member] | Long [Member]  
Schedule of Investments [Line Items]  
Unrealized Appreciation (Depreciation)/Value 5,523,984
Swap Agreements [Member] | Proshares UltraShort Silver [Member] | Short [Member]  
Schedule of Investments [Line Items]  
Unrealized Appreciation (Depreciation)/Value $ (171,104)
Swap Agreements [Member] | Proshares UltraShort Silver [Member] | Citibank N.A. [Member] | Silver Subindex [Member] | Bloomberg [Member]  
Schedule of Investments [Line Items]  
Rate Paid (Received) 0.25% [2]
Termination Date Jul. 06, 2026
Notional Amount at Value $ (9,169,411) [3]
Unrealized Appreciation (Depreciation)/Value $ 939,462
Swap Agreements [Member] | Proshares UltraShort Silver [Member] | Goldman Sachs International [Member] | Silver Subindex [Member] | Bloomberg [Member]  
Schedule of Investments [Line Items]  
Rate Paid (Received) 0.75% [2]
Termination Date Jul. 06, 2026
Notional Amount at Value $ (30,076,312) [3]
Unrealized Appreciation (Depreciation)/Value $ 4,584,522
Swap Agreements [Member] | Proshares UltraShort Silver [Member] | UBS AG [Member] | Silver Subindex [Member] | Bloomberg [Member]  
Schedule of Investments [Line Items]  
Rate Paid (Received) 0.36% [2]
Termination Date Jul. 06, 2026
Notional Amount at Value $ (40,951,852) [3]
Unrealized Appreciation (Depreciation)/Value $ (171,104)
[1] The positions and counterparties herein are as of June 30, 2026. The Fund continually evaluates different counterparties for their transactions and counterparties are subject to change. New counterparties can be added at any time.
[2] Reflects the floating financing rate, as of June 30, 2026, 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.
[3] For swap agreements, a positive amount represents “long” exposure to the benchmark index. A negative amount represents “short” exposure to the benchmark index.