v3.24.0.1
Schedule of Investments - Foreign Currency Forward Contracts (Detail) - Foreign Currency Forward Contracts [Member]
 12 Months Ended
Dec. 31, 2023
USD ($)
Dec. 31, 2022
USD ($)
Dec. 31, 2023
EUR (€)
Dec. 31, 2023
JPY (¥)
 [1]
Dec. 31, 2022
EUR (€)
Dec. 31, 2022
JPY (¥)
 [2]
ProShares Ultra Euro [Member] | Euro Contract [Member] | Contracts to Purchase [Member]            
Schedule of Investments [Line Items]            
Unrealized Appreciation (Depreciation)/Value $ 308,424 [1] $ 514,115 [2]        
ProShares Ultra Euro [Member] | Euro Contract [Member] | Contracts to Purchase [Member] | Goldman Sachs International [Member]            
Schedule of Investments [Line Items]            
Settlement Date Jan. 19, 2024 [1] Jan. 13, 2023 [2]        
Contract to Purchase $ 7,678,634 [1] $ 14,009,271 [2] € 6,949,921 [1]   € 13,074,921 [2]  
Unrealized Appreciation (Depreciation)/Value $ 164,104 [1] $ 217,491 [2]        
ProShares Ultra Euro [Member] | Euro Contract [Member] | Contracts to Purchase [Member] | UBS AG [Member]            
Schedule of Investments [Line Items]            
Settlement Date Jan. 19, 2024 [1] Jan. 13, 2023 [2]        
Contract to Purchase $ 6,747,886 [1] $ 19,707,925 [2] 6,107,502 [1]   18,393,502 [2]  
Unrealized Appreciation (Depreciation)/Value 144,320 [1] 296,624 [2]        
ProShares Ultra Euro [Member] | Euro Contract [Member] | Contracts to Sell [Member]            
Schedule of Investments [Line Items]            
Unrealized Appreciation (Depreciation)/Value $ (1,475) [1] $ (98,459) [2]        
ProShares Ultra Euro [Member] | Euro Contract [Member] | Contracts to Sell [Member] | Goldman Sachs International [Member]            
Schedule of Investments [Line Items]            
Settlement Date [1] Jan. 19, 2024          
Contract to Sell [1] $ (112,695)   (102,000)      
Unrealized Appreciation (Depreciation)/Value [1] $ (1,432)          
ProShares Ultra Euro [Member] | Euro Contract [Member] | Contracts to Sell [Member] | UBS AG [Member]            
Schedule of Investments [Line Items]            
Settlement Date Jan. 19, 2024 [1] Jan. 13, 2023 [2]        
Contract to Sell $ (82,864) [1] $ (12,313,233) [2] (75,000) [1]   (11,492,000) [2]  
Unrealized Appreciation (Depreciation)/Value (43) [1] (98,459) [2]        
ProShares Ultra Yen [Member] | Yen Contract [Member] | Contracts to Purchase [Member]            
Schedule of Investments [Line Items]            
Unrealized Appreciation (Depreciation)/Value $ 1,534,924 [1] $ 1,152,834 [2]        
ProShares Ultra Yen [Member] | Yen Contract [Member] | Contracts to Purchase [Member] | Goldman Sachs International [Member]            
Schedule of Investments [Line Items]            
Settlement Date Jan. 19, 2024 [1] Jan. 13, 2023 [2]        
Contract to Purchase $ 29,127,726 [1] $ 18,448,587 [2]   ¥ 4,094,365,056   ¥ 2,416,807,517
Unrealized Appreciation (Depreciation)/Value $ 647,731 [1] $ 687,999 [2]        
ProShares Ultra Yen [Member] | Yen Contract [Member] | Contracts to Purchase [Member] | UBS AG [Member]            
Schedule of Investments [Line Items]            
Settlement Date Jan. 19, 2024 [1] Jan. 13, 2023 [2]        
Contract to Purchase $ 34,612,448 [1] $ 13,898,334 [2]   4,865,329,856   1,820,713,856
Unrealized Appreciation (Depreciation)/Value 887,193 [1] 464,835 [2]        
ProShares Ultra Yen [Member] | Yen Contract [Member] | Contracts to Sell [Member]            
Schedule of Investments [Line Items]            
Unrealized Appreciation (Depreciation)/Value $ (15,639) [1] $ (168,285) [2]        
ProShares Ultra Yen [Member] | Yen Contract [Member] | Contracts to Sell [Member] | Goldman Sachs International [Member]            
Schedule of Investments [Line Items]            
Settlement Date Jan. 19, 2024 [1] Jan. 13, 2023 [2]        
Contract to Sell $ (127,463) [1] $ (205,989) [2]   (17,917,000)   (26,985,000)
Unrealized Appreciation (Depreciation)/Value $ (870) [1] $ (4,879) [2]        
ProShares Ultra Yen [Member] | Yen Contract [Member] | Contracts to Sell [Member] | UBS AG [Member]            
Schedule of Investments [Line Items]            
Settlement Date Jan. 19, 2024 [1] Jan. 13, 2023 [2]        
Contract to Sell $ (3,175,962) [1] $ (4,472,998) [2]   (446,432,000)   (585,973,000)
Unrealized Appreciation (Depreciation)/Value (14,769) [1] (163,406) [2]        
ProShares UltraShort Euro [Member] | Euro Contract [Member] | Contracts to Purchase [Member]            
Schedule of Investments [Line Items]            
Unrealized Appreciation (Depreciation)/Value $ 38,029 [1] $ 193,192        
ProShares UltraShort Euro [Member] | Euro Contract [Member] | Contracts to Purchase [Member] | Goldman Sachs International [Member]            
Schedule of Investments [Line Items]            
Settlement Date [1] Jan. 19, 2024          
Contract to Sell [1] $ 5,872,288   5,315,000      
Unrealized Appreciation (Depreciation)/Value [1] $ 27,910          
ProShares UltraShort Euro [Member] | Euro Contract [Member] | Contracts to Purchase [Member] | UBS AG [Member]            
Schedule of Investments [Line Items]            
Settlement Date Jan. 19, 2024 [1] Jan. 13, 2023        
Contract to Purchase $ 3,750,972 [1] $ 23,419,999 3,395,000 [1]   21,858,000  
Unrealized Appreciation (Depreciation)/Value 10,119 [1] 193,192        
ProShares UltraShort Euro [Member] | Euro Contract [Member] | Contracts to Sell [Member]            
Schedule of Investments [Line Items]            
Unrealized Appreciation (Depreciation)/Value $ (1,886,808) [1] $ (2,654,448)        
ProShares UltraShort Euro [Member] | Euro Contract [Member] | Contracts to Sell [Member] | Goldman Sachs International [Member]            
Schedule of Investments [Line Items]            
Settlement Date Jan. 19, 2024 [1] Jan. 13, 2023        
Contract to Sell $ (45,573,223) [1] $ (72,859,645) (41,248,263) [1]   (68,000,263)  
Unrealized Appreciation (Depreciation)/Value $ (992,052) [1] $ (1,121,150)        
ProShares UltraShort Euro [Member] | Euro Contract [Member] | Contracts to Sell [Member] | UBS AG [Member]            
Schedule of Investments [Line Items]            
Settlement Date Jan. 19, 2024 [1] Jan. 13, 2023        
Contract to Sell $ (42,745,837) [1] $ (100,896,501) € (38,689,199) [1]   € (94,167,199)  
Unrealized Appreciation (Depreciation)/Value (894,756) [1] (1,533,298)        
ProShares UltraShort Yen [Member] | Yen Contract [Member] | Contracts to Purchase [Member]            
Schedule of Investments [Line Items]            
Unrealized Appreciation (Depreciation)/Value $ 129,697 [1] $ 963,369 [2]        
ProShares UltraShort Yen [Member] | Yen Contract [Member] | Contracts to Purchase [Member] | Goldman Sachs International [Member]            
Schedule of Investments [Line Items]            
Settlement Date Jan. 19, 2024 [1] Jan. 13, 2023 [2]        
Contract to Purchase $ 10,543,197 [1] $ 4,350,900 [2]   1,482,014,000   569,978,000
Unrealized Appreciation (Depreciation)/Value $ 112,532 [1] $ 103,061 [2]        
ProShares UltraShort Yen [Member] | Yen Contract [Member] | Contracts to Purchase [Member] | UBS AG [Member]            
Schedule of Investments [Line Items]            
Settlement Date Jan. 19, 2024 [1] Jan. 13, 2023 [2]        
Contract to Purchase $ 2,466,153 [1] $ 58,350,734 [2]   346,657,000   7,644,081,000
Unrealized Appreciation (Depreciation)/Value 17,165 [1] 860,308 [2]        
ProShares UltraShort Yen [Member] | Yen Contract [Member] | Contracts to Sell [Member]            
Schedule of Investments [Line Items]            
Unrealized Appreciation (Depreciation)/Value $ (1,441,622) [1] $ (3,990,802) [2]        
ProShares UltraShort Yen [Member] | Yen Contract [Member] | Contracts to Sell [Member] | Goldman Sachs International [Member]            
Schedule of Investments [Line Items]            
Settlement Date Jan. 19, 2024 [1] Jan. 13, 2023 [2]        
Contract to Sell $ (35,858,983) [1] $ (27,870,914) [2]   (5,040,550,165)   (3,651,154,165)
Unrealized Appreciation (Depreciation)/Value $ (813,609) [1] $ (1,039,383) [2]        
ProShares UltraShort Yen [Member] | Yen Contract [Member] | Contracts to Sell [Member] | UBS AG [Member]            
Schedule of Investments [Line Items]            
Settlement Date Jan. 19, 2024 [1] Jan. 13, 2023 [2]        
Contract to Sell $ (25,121,815) [1] $ (77,423,890) [2]   ¥ (3,531,270,574)   ¥ (10,142,708,574)
Unrealized Appreciation (Depreciation)/Value $ (628,013) [1] $ (2,951,419) [2]        
[1] 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.
[2] The positions and counterparties herein are as of December 31, 2022. The Fund continually evaluates different counterparties for their transactions and counterparties are subject to change. New counterparties can be added at any time.