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Schedule of Investments - Short-Term U.S. Government and Agency Obligations (Detail) - U.S. Government Agencies Short-term Debt Securities [Member] - USD ($)
Mar. 31, 2024
Dec. 31, 2023
Schedule of Investments [Line Items]    
Short-term U.S. government and agency obligations, value $ 1,101,171,661 $ 690,474,277
ProShares Short VIX Short-Term Futures ETF [Member]    
Schedule of Investments [Line Items]    
Short-term U.S. government and agency obligations, value 148,757,467 109,410,342
ProShares Short VIX Short-Term Futures ETF [Member] | U.S. Treasury Bills 5.365% due 04/18/24 [Member]    
Schedule of Investments [Line Items]    
Principal Amount [1] 50,000,000  
Short-term U.S. government and agency obligations, value [1] 49,875,215  
ProShares Short VIX Short-Term Futures ETF [Member] | U.S. Treasury Bills 5.269% due 06/06/24 [Member]    
Schedule of Investments [Line Items]    
Principal Amount [1] 50,000,000  
Short-term U.S. government and agency obligations, value [1] 49,521,960  
ProShares Short VIX Short-Term Futures ETF [Member] | U.S. Treasury Bills 5.352% due 06/18/24 [Member]    
Schedule of Investments [Line Items]    
Principal Amount [1] 25,000,000  
Short-term U.S. government and agency obligations, value [1] 24,717,792  
ProShares Short VIX Short-Term Futures ETF [Member] | U.S. Treasury Bills 5.349% due 07/09/24 [Member]    
Schedule of Investments [Line Items]    
Principal Amount [1] 25,000,000  
Short-term U.S. government and agency obligations, value [1] 24,642,500  
ProShares Ultra Bloomberg Crude Oil [Member]    
Schedule of Investments [Line Items]    
Short-term U.S. government and agency obligations, value 301,974,899 233,476,941
ProShares Ultra Bloomberg Crude Oil [Member] | U.S. Treasury Bills 5.365% due 04/18/24 [Member]    
Schedule of Investments [Line Items]    
Principal Amount [1] 50,000,000  
Short-term U.S. government and agency obligations, value [1] 49,875,215  
ProShares Ultra Bloomberg Crude Oil [Member] | U.S. Treasury Bills 5.273% due 05/14/24 [Member]    
Schedule of Investments [Line Items]    
Principal Amount [1],[2] 30,000,000  
Short-term U.S. government and agency obligations, value [1],[2] 29,811,159  
ProShares Ultra Bloomberg Crude Oil [Member] | U.S. Treasury Bills 5.269% due 06/06/24 [Member]    
Schedule of Investments [Line Items]    
Principal Amount [1],[2] 75,000,000  
Short-term U.S. government and agency obligations, value [1],[2] 74,282,940  
ProShares Ultra Bloomberg Crude Oil [Member] | U.S. Treasury Bills 5.352% due 06/18/24 [Member]    
Schedule of Investments [Line Items]    
Principal Amount [1],[2] 50,000,000  
Short-term U.S. government and agency obligations, value [1],[2] 49,435,585  
ProShares Ultra Bloomberg Crude Oil [Member] | U.S. Treasury Bills 5.349% due 07/09/24 [Member]    
Schedule of Investments [Line Items]    
Principal Amount [1] 100,000,000  
Short-term U.S. government and agency obligations, value [1] 98,570,000  
ProShares Ultra Gold [Member]    
Schedule of Investments [Line Items]    
Short-term U.S. government and agency obligations, value 138,587,964 59,507,594
ProShares Ultra Gold [Member] | U.S. Treasury Bills 5.365% due 04/18/24 [Member]    
Schedule of Investments [Line Items]    
Principal Amount [1] 20,000,000  
Short-term U.S. government and agency obligations, value [1] 19,950,086  
ProShares Ultra Gold [Member] | U.S. Treasury Bills 5.273% due 05/14/24 [Member]    
Schedule of Investments [Line Items]    
Principal Amount [1] 20,000,000  
Short-term U.S. government and agency obligations, value [1] 19,874,106  
ProShares Ultra Gold [Member] | U.S. Treasury Bills 5.269% due 06/06/24 [Member]    
Schedule of Investments [Line Items]    
Principal Amount [1],[2] 25,000,000  
Short-term U.S. government and agency obligations, value [1],[2] 24,760,980  
ProShares Ultra Gold [Member] | U.S. Treasury Bills 5.390% due 06/18/24 [Member]    
Schedule of Investments [Line Items]    
Principal Amount [1],[2] 25,000,000  
Short-term U.S. government and agency obligations, value [1],[2] 24,717,792  
ProShares Ultra Gold [Member] | U.S. Treasury Bills 5.349% due 07/09/24 [Member]    
Schedule of Investments [Line Items]    
Principal Amount [1] 50,000,000  
Short-term U.S. government and agency obligations, value [1] 49,285,000  
ProShares Ultra Silver [Member]    
Schedule of Investments [Line Items]    
Short-term U.S. government and agency obligations, value 205,080,219 114,276,025
ProShares Ultra Silver [Member] | U.S. Treasury Bills 5.365% due 04/18/24 [Member]    
Schedule of Investments [Line Items]    
Principal Amount [1] 32,000,000  
Short-term U.S. government and agency obligations, value [1] 31,920,138  
ProShares Ultra Silver [Member] | U.S. Treasury Bills 5.273% due 05/14/24 [Member]    
Schedule of Investments [Line Items]    
Principal Amount [1] 40,000,000  
Short-term U.S. government and agency obligations, value [1] 39,748,212  
ProShares Ultra Silver [Member] | U.S. Treasury Bills 5.269% due 06/06/24 [Member]    
Schedule of Investments [Line Items]    
Principal Amount [1],[2] 50,000,000  
Short-term U.S. government and agency obligations, value [1],[2] 49,521,960  
ProShares Ultra Silver [Member] | U.S. Treasury Bills 5.352% due 06/18/24 [Member]    
Schedule of Investments [Line Items]    
Principal Amount [1],[2] 35,000,000  
Short-term U.S. government and agency obligations, value [1],[2] 34,604,909  
ProShares Ultra Silver [Member] | U.S. Treasury Bills 5.349% due 07/09/24 [Member]    
Schedule of Investments [Line Items]    
Principal Amount [1] 50,000,000  
Short-term U.S. government and agency obligations, value [1] 49,285,000  
ProShares Ultra VIX Short-Term Futures ETF [Member]    
Schedule of Investments [Line Items]    
Short-term U.S. government and agency obligations, value 59,307,872 0
ProShares Ultra VIX Short-Term Futures ETF [Member] | U.S. Treasury Bills 5.269% due 06/06/24 [Member]    
Schedule of Investments [Line Items]    
Principal Amount [1] 35,000,000  
Short-term U.S. government and agency obligations, value [1] 34,665,372  
ProShares Ultra VIX Short-Term Futures ETF [Member] | U.S. Treasury Bills 5.349% due 07/09/24 [Member]    
Schedule of Investments [Line Items]    
Principal Amount [1] 25,000,000  
Short-term U.S. government and agency obligations, value [1] 24,642,500  
ProShares UltraShort Bloomberg Crude Oil [Member]    
Schedule of Investments [Line Items]    
Short-term U.S. government and agency obligations, value 123,814,531 49,683,885
ProShares UltraShort Bloomberg Crude Oil [Member] | U.S. Treasury Bills 5.365% due 04/18/24 [Member]    
Schedule of Investments [Line Items]    
Principal Amount [1] 15,000,000  
Short-term U.S. government and agency obligations, value [1] 14,962,564  
ProShares UltraShort Bloomberg Crude Oil [Member] | U.S. Treasury Bills 5.273% due 05/14/24 [Member]    
Schedule of Investments [Line Items]    
Principal Amount [1] 20,000,000  
Short-term U.S. government and agency obligations, value [1] 19,874,106  
ProShares UltraShort Bloomberg Crude Oil [Member] | U.S. Treasury Bills 5.269% due 06/06/24 [Member]    
Schedule of Investments [Line Items]    
Principal Amount [1] 40,000,000  
Short-term U.S. government and agency obligations, value [1] 39,617,568  
ProShares UltraShort Bloomberg Crude Oil [Member] | U.S. Treasury Bills 5.352% due 06/18/24 [Member]    
Schedule of Investments [Line Items]    
Principal Amount [1] 25,000,000  
Short-term U.S. government and agency obligations, value [1] 24,717,793  
ProShares UltraShort Bloomberg Crude Oil [Member] | U.S. Treasury Bills 5.349% due 07/09/24 [Member]    
Schedule of Investments [Line Items]    
Principal Amount [1] 25,000,000  
Short-term U.S. government and agency obligations, value [1] 24,642,500  
ProShares UltraShort Bloomberg Natural Gas [Member]    
Schedule of Investments [Line Items]    
Short-term U.S. government and agency obligations, value 54,447,299 0
ProShares UltraShort Bloomberg Natural Gas [Member] | U.S. Treasury Bills 5.273% due 05/14/24 [Member]    
Schedule of Investments [Line Items]    
Principal Amount [1] 5,000,000  
Short-term U.S. government and agency obligations, value [1] 4,968,526  
ProShares UltraShort Bloomberg Natural Gas [Member] | U.S. Treasury Bills 5.269% due 06/06/24 [Member]    
Schedule of Investments [Line Items]    
Principal Amount [1] 25,000,000  
Short-term U.S. government and agency obligations, value [1] 24,760,980  
ProShares UltraShort Bloomberg Natural Gas [Member] | U.S. Treasury Bills 5.390% due 06/18/24 [Member]    
Schedule of Investments [Line Items]    
Principal Amount [1] 25,000,000  
Short-term U.S. government and agency obligations, value [1] 24,717,793  
ProShares VIX Short-Term Futures ETF [Member]    
Schedule of Investments [Line Items]    
Short-term U.S. government and agency obligations, value 69,201,410 $ 59,660,373
ProShares VIX Short-Term Futures ETF [Member] | U.S. Treasury Bills 5.269% due 06/06/24 [Member]    
Schedule of Investments [Line Items]    
Principal Amount [1] 30,000,000  
Short-term U.S. government and agency obligations, value [1] 29,713,176  
ProShares VIX Short-Term Futures ETF [Member] | U.S. Treasury Bills 5.352% due 06/18/24 [Member]    
Schedule of Investments [Line Items]    
Principal Amount [1] 20,000,000  
Short-term U.S. government and agency obligations, value [1] 19,774,234  
ProShares VIX Short-Term Futures ETF [Member] | U.S. Treasury Bills 5.349% due 07/09/24 [Member]    
Schedule of Investments [Line Items]    
Principal Amount [1] 20,000,000  
Short-term U.S. government and agency obligations, value [1] $ 19,714,000  
[1] Rates shown represent discount rate at the time of purchase.
[2] All or partial amount pledged as collateral for swap agreements.