v3.26.1
Schedule of Investments - Short-Term U.S. Government and Agency Obligations (Detail) - USD ($)
Jun. 30, 2026
Dec. 31, 2025
U.S. Government Agencies Short-term Debt Securities [Member]    
Schedule of Investments [Line Items]    
Short-term U.S. government and agency obligations, value $ 2,133,460,710 $ 2,259,034,978
ProShares Short VIX Short-Term Futures ETF [Member]    
Schedule of Investments [Line Items]    
Short-term U.S. government and agency obligations, value 119,690,753  
ProShares Short VIX Short-Term Futures ETF [Member] | U.S. Government Agencies Short-term Debt Securities [Member]    
Schedule of Investments [Line Items]    
Short-term U.S. government and agency obligations, value 44,645,753 59,907,798
ProShares Short VIX Short-Term Futures ETF [Member] | U.S. Treasury Bills 3.705% due 09/10/26 [Member] | U.S. Government Agencies Short-term Debt Securities [Member]    
Schedule of Investments [Line Items]    
Principal Amount [1] 25,000,000  
Short-term U.S. government and agency obligations, value [1] 24,819,295  
ProShares Short VIX Short-Term Futures ETF [Member] | U.S. Treasury Bills 3.763% due 09/24/26 [Member] | U.S. Government Agencies Short-term Debt Securities [Member]    
Schedule of Investments [Line Items]    
Principal Amount [1] 20,000,000  
Short-term U.S. government and agency obligations, value [1] 19,826,458  
ProShares Ultra Bloomberg Crude Oil [Member]    
Schedule of Investments [Line Items]    
Short-term U.S. government and agency obligations, value [2] 318,688,306  
ProShares Ultra Bloomberg Crude Oil [Member] | U.S. Government Agencies Short-term Debt Securities [Member]    
Schedule of Investments [Line Items]    
Short-term U.S. government and agency obligations, value 248,639,306 149,575,489
ProShares Ultra Bloomberg Crude Oil [Member] | U.S. Treasury Bills 3.806% due 07/09/26 [Member] | U.S. Government Agencies Short-term Debt Securities [Member]    
Schedule of Investments [Line Items]    
Principal Amount [1] 20,000,000  
Short-term U.S. government and agency obligations, value [1],[3] 19,983,888  
ProShares Ultra Bloomberg Crude Oil [Member] | U.S. Treasury Bills 3.678% due 07/14/26 [Member] | U.S. Government Agencies Short-term Debt Securities [Member]    
Schedule of Investments [Line Items]    
Principal Amount [1] 10,000,000  
Short-term U.S. government and agency obligations, value [1],[3] 9,987,054  
ProShares Ultra Bloomberg Crude Oil [Member] | U.S. Treasury Bills 3.673% due 08/06/26 [Member] | U.S. Government Agencies Short-term Debt Securities [Member]    
Schedule of Investments [Line Items]    
Principal Amount [1] 85,000,000  
Short-term U.S. government and agency obligations, value [1],[3] 84,692,300  
ProShares Ultra Bloomberg Crude Oil [Member] | U.S. Treasury Bills 3.773% due 09/08/26 [Member] | U.S. Government Agencies Short-term Debt Securities [Member]    
Schedule of Investments [Line Items]    
Principal Amount [1] 30,000,000  
Short-term U.S. government and agency obligations, value [1] 29,788,113  
ProShares Ultra Bloomberg Crude Oil [Member] | U.S. Treasury Bills 3.706% due 09/10/26 [Member] | U.S. Government Agencies Short-term Debt Securities [Member]    
Schedule of Investments [Line Items]    
Principal Amount [1] 40,000,000  
Short-term U.S. government and agency obligations, value [1],[3] 39,710,872  
ProShares Ultra Bloomberg Crude Oil [Member] | U.S. Treasury Bills 3.770% due 09/17/26 [Member] | U.S. Government Agencies Short-term Debt Securities [Member]    
Schedule of Investments [Line Items]    
Principal Amount [1] 55,000,000  
Short-term U.S. government and agency obligations, value [1],[3] 54,563,850  
ProShares Ultra Bloomberg Crude Oil [Member] | U.S. Treasury Bills 3.763% due 09/24/26 [Member] | U.S. Government Agencies Short-term Debt Securities [Member]    
Schedule of Investments [Line Items]    
Principal Amount [1] 10,000,000  
Short-term U.S. government and agency obligations, value [1],[3] 9,913,229  
ProShares Ultra Bloomberg Natural Gas [Member]    
Schedule of Investments [Line Items]    
Short-term U.S. government and agency obligations, value 199,708,000  
ProShares Ultra Bloomberg Natural Gas [Member] | U.S. Government Agencies Short-term Debt Securities [Member]    
Schedule of Investments [Line Items]    
Short-term U.S. government and agency obligations, value 99,638,000 234,273,034
ProShares Ultra Bloomberg Natural Gas [Member] | U.S. Treasury Bills 3.645% due 08/06/26 [Member] | U.S. Government Agencies Short-term Debt Securities [Member]    
Schedule of Investments [Line Items]    
Principal Amount [1] 100,000,000  
Short-term U.S. government and agency obligations, value [1] 99,638,000  
Proshares Ultra Euro [Member] | U.S. Government Agencies Short-term Debt Securities [Member]    
Schedule of Investments [Line Items]    
Short-term U.S. government and agency obligations, value 1,994,224 0
Proshares Ultra Euro [Member] | U.S. Treasury Bills 3.656% due 07/30/26 [Member] | U.S. Government Agencies Short-term Debt Securities [Member]    
Schedule of Investments [Line Items]    
Principal Amount [1],[4] 2,000,000  
Short-term U.S. government and agency obligations, value [1],[4] 1,994,224  
ProShares Ultra Gold [Member]    
Schedule of Investments [Line Items]    
Short-term U.S. government and agency obligations, value 578,615,670  
ProShares Ultra Gold [Member] | U.S. Government Agencies Short-term Debt Securities [Member]    
Schedule of Investments [Line Items]    
Short-term U.S. government and agency obligations, value 398,489,670 548,706,159
ProShares Ultra Gold [Member] | U.S. Treasury Bills 3.773% due 09/08/26 [Member] | U.S. Government Agencies Short-term Debt Securities [Member]    
Schedule of Investments [Line Items]    
Principal Amount [1] 50,000,000  
Short-term U.S. government and agency obligations, value [1] 49,646,855  
ProShares Ultra Gold [Member] | U.S. Treasury Bills 3.660% due 07/30/26 [Member] | U.S. Government Agencies Short-term Debt Securities [Member]    
Schedule of Investments [Line Items]    
Principal Amount [1],[3] 150,000,000  
Short-term U.S. government and agency obligations, value [1],[3] 149,566,815  
ProShares Ultra Gold [Member] | U.S. Treasury Bills 3.642% due 08/06/26 [Member] | U.S. Government Agencies Short-term Debt Securities [Member]    
Schedule of Investments [Line Items]    
Principal Amount [1],[3] 200,000,000  
Short-term U.S. government and agency obligations, value [1],[3] 199,276,000  
ProShares Ultra Silver [Member]    
Schedule of Investments [Line Items]    
Short-term U.S. government and agency obligations, value 1,219,935,692  
ProShares Ultra Silver [Member] | U.S. Government Agencies Short-term Debt Securities [Member]    
Schedule of Investments [Line Items]    
Short-term U.S. government and agency obligations, value 939,739,692 967,310,974
ProShares Ultra Silver [Member] | U.S. Treasury Bills 3.773% due 09/08/26 [Member] | U.S. Government Agencies Short-term Debt Securities [Member]    
Schedule of Investments [Line Items]    
Principal Amount [1],[3] 70,000,000  
Short-term U.S. government and agency obligations, value [1],[3] 69,505,597  
ProShares Ultra Silver [Member] | U.S. Treasury Bills 3.770% due 09/17/26 [Member] | U.S. Government Agencies Short-term Debt Securities [Member]    
Schedule of Investments [Line Items]    
Principal Amount [1],[3] 205,000,000  
Short-term U.S. government and agency obligations, value [1],[3] 203,374,350  
ProShares Ultra Silver [Member] | U.S. Treasury Bills 3.677% due 07/14/26 [Member] | U.S. Government Agencies Short-term Debt Securities [Member]    
Schedule of Investments [Line Items]    
Principal Amount [1],[3] 250,000,000  
Short-term U.S. government and agency obligations, value [1],[3] 249,676,350  
ProShares Ultra Silver [Member] | U.S. Treasury Bills 3.674% due 07/30/26 [Member] | U.S. Government Agencies Short-term Debt Securities [Member]    
Schedule of Investments [Line Items]    
Principal Amount [1],[3] 60,000,000  
Short-term U.S. government and agency obligations, value [1],[3] 59,826,726  
ProShares Ultra Silver [Member] | U.S. Treasury Bills 3.667% due 08/06/26 [Member] | U.S. Government Agencies Short-term Debt Securities [Member]    
Schedule of Investments [Line Items]    
Principal Amount [1],[3] 95,000,000  
Short-term U.S. government and agency obligations, value [1],[3] 94,656,100  
ProShares Ultra Silver [Member] | U.S. Treasury Bills 3.760% due 09/24/26 [Member] | U.S. Government Agencies Short-term Debt Securities [Member]    
Schedule of Investments [Line Items]    
Principal Amount [1],[3] 265,000,000  
Short-term U.S. government and agency obligations, value [1],[3] 262,700,569  
Proshares Ultra Yen [Member]    
Schedule of Investments [Line Items]    
Short-term U.S. government and agency obligations, value 17,986,385  
Proshares Ultra Yen [Member] | U.S. Government Agencies Short-term Debt Securities [Member]    
Schedule of Investments [Line Items]    
Short-term U.S. government and agency obligations, value 6,979,785 0
Proshares Ultra Yen [Member] | U.S. Treasury Bills 3.656% due 07/30/26 [Member] | U.S. Government Agencies Short-term Debt Securities [Member]    
Schedule of Investments [Line Items]    
Principal Amount [1],[4] 7,000,000  
Short-term U.S. government and agency obligations, value [1],[4] 6,979,785  
ProShares UltraShort Bloomberg Crude Oil [Member]    
Schedule of Investments [Line Items]    
Short-term U.S. government and agency obligations, value [2] 579,154,830  
ProShares UltraShort Bloomberg Crude Oil [Member] | U.S. Government Agencies Short-term Debt Securities [Member]    
Schedule of Investments [Line Items]    
Short-term U.S. government and agency obligations, value 278,944,830 44,913,599
ProShares UltraShort Bloomberg Crude Oil [Member] | U.S. Treasury Bills 3.806% due 07/09/26 [Member] | U.S. Government Agencies Short-term Debt Securities [Member]    
Schedule of Investments [Line Items]    
Principal Amount [1] 50,000,000  
Short-term U.S. government and agency obligations, value [1] 49,959,720  
ProShares UltraShort Bloomberg Crude Oil [Member] | U.S. Treasury Bills 3.773% due 09/08/26 [Member] | U.S. Government Agencies Short-term Debt Securities [Member]    
Schedule of Investments [Line Items]    
Principal Amount [1] 100,000,000  
Short-term U.S. government and agency obligations, value [1] 99,293,710  
ProShares UltraShort Bloomberg Crude Oil [Member] | U.S. Treasury Bills 3.778% due 07/21/26 [Member] | U.S. Government Agencies Short-term Debt Securities [Member]    
Schedule of Investments [Line Items]    
Principal Amount [1] 100,000,000  
Short-term U.S. government and agency obligations, value [1] 99,800,000  
ProShares UltraShort Bloomberg Crude Oil [Member] | U.S. Treasury Bills 3.633% due 08/06/26 [Member] | U.S. Government Agencies Short-term Debt Securities [Member]    
Schedule of Investments [Line Items]    
Principal Amount [1] 30,000,000  
Short-term U.S. government and agency obligations, value [1] 29,891,400  
ProShares UltraShort Euro [Member]    
Schedule of Investments [Line Items]    
Short-term U.S. government and agency obligations, value 19,977,121  
ProShares UltraShort Euro [Member] | U.S. Government Agencies Short-term Debt Securities [Member]    
Schedule of Investments [Line Items]    
Short-term U.S. government and agency obligations, value 9,971,121 0
ProShares UltraShort Euro [Member] | U.S. Treasury Bills 3.656% due 07/30/26 [Member] | U.S. Government Agencies Short-term Debt Securities [Member]    
Schedule of Investments [Line Items]    
Principal Amount [1],[4] 10,000,000  
Short-term U.S. government and agency obligations, value [1],[4] 9,971,121  
Proshares UltraShort Gold [Member]    
Schedule of Investments [Line Items]    
Short-term U.S. government and agency obligations, value 69,876,200  
Proshares UltraShort Gold [Member] | U.S. Government Agencies Short-term Debt Securities [Member]    
Schedule of Investments [Line Items]    
Short-term U.S. government and agency obligations, value 39,855,200 0
Proshares UltraShort Gold [Member] | U.S. Treasury Bills 3.639% due 08/06/26 [Member] | U.S. Government Agencies Short-term Debt Securities [Member]    
Schedule of Investments [Line Items]    
Principal Amount [1],[3] 40,000,000  
Short-term U.S. government and agency obligations, value [1],[3] 39,855,200  
Proshares UltraShort Silver [Member]    
Schedule of Investments [Line Items]    
Short-term U.S. government and agency obligations, value [2] 64,642,208  
Proshares UltraShort Silver [Member] | U.S. Government Agencies Short-term Debt Securities [Member]    
Schedule of Investments [Line Items]    
Short-term U.S. government and agency obligations, value 44,628,208 0
Proshares UltraShort Silver [Member] | U.S. Treasury Bills 3.760% due 09/24/26 [Member] | U.S. Government Agencies Short-term Debt Securities [Member]    
Schedule of Investments [Line Items]    
Principal Amount [1],[3] 20,000,000  
Short-term U.S. government and agency obligations, value [1],[3] 19,826,458  
Proshares UltraShort Silver [Member] | U.S. Treasury Bills 3.771% due 09/17/26 [Member] | U.S. Government Agencies Short-term Debt Securities [Member]    
Schedule of Investments [Line Items]    
Principal Amount [1],[3] 25,000,000  
Short-term U.S. government and agency obligations, value [1],[3] 24,801,750  
ProShares UltraShort Yen [Member]    
Schedule of Investments [Line Items]    
Short-term U.S. government and agency obligations, value 16,975,321  
ProShares UltraShort Yen [Member] | U.S. Government Agencies Short-term Debt Securities [Member]    
Schedule of Investments [Line Items]    
Short-term U.S. government and agency obligations, value 9,971,121 0
ProShares UltraShort Yen [Member] | U.S. Treasury Bills 3.656% due 07/30/26 [Member] | U.S. Government Agencies Short-term Debt Securities [Member]    
Schedule of Investments [Line Items]    
Principal Amount [1],[4] 10,000,000  
Short-term U.S. government and agency obligations, value [1],[4] 9,971,121  
ProShares VIX Mid-Term Futures ETF [Member]    
Schedule of Investments [Line Items]    
Short-term U.S. government and agency obligations, value 24,972,800  
ProShares VIX Mid-Term Futures ETF [Member] | U.S. Government Agencies Short-term Debt Securities [Member]    
Schedule of Investments [Line Items]    
Short-term U.S. government and agency obligations, value 9,963,800 $ 0
ProShares VIX Mid-Term Futures ETF [Member] | U.S. Treasury Bills 3.633% due 08/06/26 [Member] | U.S. Government Agencies Short-term Debt Securities [Member]    
Schedule of Investments [Line Items]    
Principal Amount [1] 10,000,000  
Short-term U.S. government and agency obligations, value [1] $ 9,963,800  
[1] Rates shown represent discount rate at the time of purchase.
[2] Affiliated company as defined under the Investment Company Act of 1940.
[3] All or partial amount pledged as collateral for swap agreements.
[4] All or partial amount pledged as collateral for foreign currency forward contracts.