v3.25.2
Schedule of Investments - Foreign Currency Forward Contracts (Detail) - 6 months ended Jun. 30, 2025 - Foreign Currency Forward Contracts [Member]
USD ($)
EUR (€)
JPY (¥)
ProShares Ultra Euro [Member] | Euro Contract [Member] | Contracts to Purchase [Member]      
Schedule of Investments [Line Items]      
Unrealized Appreciation (Depreciation)/Value [1] $ 446,814    
ProShares Ultra Euro [Member] | Euro Contract [Member] | Contracts to Purchase [Member] | Goldman Sachs International [Member]      
Schedule of Investments [Line Items]      
Settlement Date [1] Jul. 11, 2025    
Contract to Purchase [1] $ 8,862,823 € 7,517,921  
Unrealized Appreciation (Depreciation)/Value [1] $ 227,343    
ProShares Ultra Euro [Member] | Euro Contract [Member] | Contracts to Purchase [Member] | UBS AG [Member]      
Schedule of Investments [Line Items]      
Settlement Date [1] Jul. 11, 2025    
Contract to Purchase [1] $ 8,685,494 7,367,502  
Unrealized Appreciation (Depreciation)/Value [1] 219,471    
ProShares Ultra Euro [Member] | Euro Contract [Member] | Contracts to Sell [Member]      
Schedule of Investments [Line Items]      
Unrealized Appreciation (Depreciation)/Value [1] $ (3,294)    
ProShares Ultra Euro [Member] | Euro Contract [Member] | Contracts to Sell [Member] | Goldman Sachs International [Member]      
Schedule of Investments [Line Items]      
Settlement Date [1] Jul. 11, 2025    
Contract to Sell [1] $ (134,394) (114,000)  
Unrealized Appreciation (Depreciation)/Value [1] (3,294)    
ProShares Ultra Yen [Member] | Yen Contract [Member] | Contracts to Purchase [Member]      
Schedule of Investments [Line Items]      
Unrealized Appreciation (Depreciation)/Value [1] $ 764,251    
ProShares Ultra Yen [Member] | Yen Contract [Member] | Contracts to Purchase [Member] | Goldman Sachs International [Member]      
Schedule of Investments [Line Items]      
Settlement Date [1] Jul. 11, 2025    
Contract to Purchase [1] $ 62,602,612   ¥ 9,002,886,056
Unrealized Appreciation (Depreciation)/Value [1] $ 381,895    
ProShares Ultra Yen [Member] | Yen Contract [Member] | Contracts to Purchase [Member] | UBS AG [Member]      
Schedule of Investments [Line Items]      
Settlement Date [1] Jul. 11, 2025    
Contract to Purchase [1] $ 74,355,495   10,693,068,856
Unrealized Appreciation (Depreciation)/Value [1] 382,356    
ProShares Ultra Yen [Member] | Yen Contract [Member] | Contracts to Sell [Member]      
Schedule of Investments [Line Items]      
Unrealized Appreciation (Depreciation)/Value [1] $ (27,879)    
ProShares Ultra Yen [Member] | Yen Contract [Member] | Contracts to Sell [Member] | Goldman Sachs International [Member]      
Schedule of Investments [Line Items]      
Settlement Date [1] Jul. 11, 2025    
Contract to Sell [1] $ (2,004,101)   (288,210,000)
Unrealized Appreciation (Depreciation)/Value [1] $ (7,296)    
ProShares Ultra Yen [Member] | Yen Contract [Member] | Contracts to Sell [Member] | UBS AG [Member]      
Schedule of Investments [Line Items]      
Settlement Date [1] Jul. 11, 2025    
Contract to Sell [1] $ (2,339,844)   (336,493,000)
Unrealized Appreciation (Depreciation)/Value [1] (20,583)    
ProShares UltraShort Euro [Member] | Euro Contract [Member] | Contracts to Purchase [Member]      
Schedule of Investments [Line Items]      
Unrealized Appreciation (Depreciation)/Value [1] $ 110,889    
ProShares UltraShort Euro [Member] | Euro Contract [Member] | Contracts to Purchase [Member] | Goldman Sachs International [Member]      
Schedule of Investments [Line Items]      
Settlement Date [1] Jul. 11, 2025    
Contract to Purchase [1] $ 4,598,860 3,901,000  
Unrealized Appreciation (Depreciation)/Value [1] $ 58,997    
ProShares UltraShort Euro [Member] | Euro Contract [Member] | Contracts to Purchase [Member] | UBS AG [Member]      
Schedule of Investments [Line Items]      
Settlement Date [1] Jul. 11, 2025    
Contract to Purchase [1] $ 3,254,923 2,761,000  
Unrealized Appreciation (Depreciation)/Value [1] 51,892    
ProShares UltraShort Euro [Member] | Euro Contract [Member] | Contracts to Sell [Member]      
Schedule of Investments [Line Items]      
Unrealized Appreciation (Depreciation)/Value [1] $ (1,837,188)    
ProShares UltraShort Euro [Member] | Euro Contract [Member] | Contracts to Sell [Member] | Goldman Sachs International [Member]      
Schedule of Investments [Line Items]      
Settlement Date [1] Jul. 11, 2025    
Contract to Sell [1] $ (37,035,223) (31,415,263)  
Unrealized Appreciation (Depreciation)/Value [1] $ (971,683)    
ProShares UltraShort Euro [Member] | Euro Contract [Member] | Contracts to Sell [Member] | UBS AG [Member]      
Schedule of Investments [Line Items]      
Settlement Date [1] Jul. 11, 2025    
Contract to Sell [1] $ (33,981,816) € (28,825,199)  
Unrealized Appreciation (Depreciation)/Value [1] (865,505)    
ProShares UltraShort Yen [Member] | Yen Contract [Member] | Contracts to Purchase [Member]      
Schedule of Investments [Line Items]      
Unrealized Appreciation (Depreciation)/Value [1] $ (4,805)    
ProShares UltraShort Yen [Member] | Yen Contract [Member] | Contracts to Purchase [Member] | Goldman Sachs International [Member]      
Schedule of Investments [Line Items]      
Settlement Date [1] Jul. 11, 2025    
Contract to Purchase [1] $ 2,431,033   349,607,000
Unrealized Appreciation (Depreciation)/Value [1] $ (1,611)    
ProShares UltraShort Yen [Member] | Yen Contract [Member] | Contracts to Purchase [Member] | UBS AG [Member]      
Schedule of Investments [Line Items]      
Settlement Date [1] Jul. 11, 2025    
Contract to Purchase [1] $ 4,870,202   700,384,000
Unrealized Appreciation (Depreciation)/Value [1] (3,194)    
ProShares UltraShort Yen [Member] | Yen Contract [Member] | Contracts to Sell [Member]      
Schedule of Investments [Line Items]      
Unrealized Appreciation (Depreciation)/Value [1] $ (282,196)    
ProShares UltraShort Yen [Member] | Yen Contract [Member] | Contracts to Sell [Member] | Goldman Sachs International [Member]      
Schedule of Investments [Line Items]      
Settlement Date [1] Jul. 11, 2025    
Contract to Sell [1] $ (21,675,194)   (3,117,111,165)
Unrealized Appreciation (Depreciation)/Value [1] $ (135,272)    
ProShares UltraShort Yen [Member] | Yen Contract [Member] | Contracts to Sell [Member] | UBS AG [Member]      
Schedule of Investments [Line Items]      
Settlement Date [1] Jul. 11, 2025    
Contract to Sell [1] $ (26,868,184)   ¥ (3,863,915,424)
Unrealized Appreciation (Depreciation)/Value [1] $ (146,924)    
[1] The positions and counterparties herein are as of June 30, 2025. The Fund continually evaluates different counterparties for their transactions and counterparties are subject to change. New counterparties can be added at any time.