v3.24.0.1
Cover Page - USD ($)
 12 Months Ended
Dec. 31, 2023
Feb. 22, 2024
Jun. 30, 2023
Document Information [Line Items]      
Document Type 10-K    
Amendment Flag false    
Document Annual Report true    
Document Period End Date Dec. 31, 2023    
Document Transition Report false    
Document Fiscal Year Focus 2023    
Document Fiscal Period Focus FY    
Entity File Number 001-34200    
Entity Registrant Name PROSHARES TRUST II    
Entity Central Index Key 0001415311    
Current Fiscal Year End Date --12-31    
Entity Incorporation, State or Country Code DE    
Entity Tax Identification Number 87-6284802    
Entity Address, Address Line One c/o ProShare Capital Management LLC    
Entity Address, Address Line Two 7272 Wisconsin Ave    
Entity Address, Address Line Three 21st Floor    
Entity Address, City or Town Bethesda    
Entity Address, State or Province MD    
Entity Address, Postal Zip Code 20814    
City Area Code 240    
Local Phone Number 497-6400    
Entity Current Reporting Status Yes    
Entity Interactive Data Current Yes    
Entity Voluntary Filers No    
Entity Well-known Seasoned Issuer Yes    
Entity Filer Category Large Accelerated Filer    
Entity Small Business false    
Entity Emerging Growth Company false    
ICFR Auditor Attestation Flag true    
Entity Shell Company false    
Entity Common Stock, Shares Outstanding   145,064,214  
Entity Public Float   $ 0  
Auditor Name PricewaterhouseCoopers LLP    
Auditor Firm ID 238    
Auditor Location Columbus, Ohio    
Document Financial Statement Error Correction [Flag] false    
ProShares Short VIX Short-Term Futures ETF [Member]      
Document Information [Line Items]      
Entity Common Stock, Shares Outstanding   3,084,307  
Title of 12(b) Security ProShares Short VIX Short-Term Futures ETF    
Security Exchange Name CboeBZX    
Trading Symbol SVXY    
Entity Public Float     $ 282,353,267
Proshares Ultra Bloomberg Crude Oil [Member]      
Document Information [Line Items]      
Entity Common Stock, Shares Outstanding   20,793,096  
Title of 12(b) Security ProShares Ultra Bloomberg Crude Oil    
Security Exchange Name NYSEArca    
Trading Symbol UCO    
Entity Public Float     738,194,368
Proshares Ultra Bloomberg Natural Gas [Member]      
Document Information [Line Items]      
Entity Common Stock, Shares Outstanding   36,968,544  
Title of 12(b) Security ProShares Ultra Bloomberg Natural Gas    
Security Exchange Name NYSEArca    
Trading Symbol BOIL    
Entity Public Float     1,141,021,278
Proshares Ultra Euro [Member]      
Document Information [Line Items]      
Entity Common Stock, Shares Outstanding   550,000  
Title of 12(b) Security ProShares Ultra Euro    
Security Exchange Name NYSEArca    
Trading Symbol ULE    
Entity Public Float     7,535,435
Proshares Ultra Gold [Member]      
Document Information [Line Items]      
Entity Common Stock, Shares Outstanding   2,800,000  
Title of 12(b) Security ProShares Ultra Gold    
Security Exchange Name NYSEArca    
Trading Symbol UGL    
Entity Public Float     180,916,531
Proshares Ultra Silver [Member]      
Document Information [Line Items]      
Entity Common Stock, Shares Outstanding   14,396,526  
Title of 12(b) Security ProShares Ultra Silver    
Security Exchange Name NYSEArca    
Trading Symbol AGQ    
Entity Public Float     356,791,659
ProShares Ultra VIX Short-Term Futures ETF [Member]      
Document Information [Line Items]      
Entity Common Stock, Shares Outstanding   36,424,459  
Title of 12(b) Security ProShares Ultra VIX Short-Term Futures ETF    
Security Exchange Name CboeBZX    
Trading Symbol UVXY    
Entity Public Float     387,764,059
Proshares Ultra Yen [Member]      
Document Information [Line Items]      
Entity Common Stock, Shares Outstanding   1,349,970  
Title of 12(b) Security ProShares Ultra Yen    
Security Exchange Name NYSEArca    
Trading Symbol YCL    
Entity Public Float     12,330,974
ProShares UltraShort Bloomberg Crude Oil [Member]      
Document Information [Line Items]      
Entity Common Stock, Shares Outstanding   10,855,220  
Title of 12(b) Security ProShares UltraShort Bloomberg Crude Oil    
Security Exchange Name NYSEArca    
Trading Symbol SCO    
Entity Public Float     112,854,952
ProShares UltraShort Bloomberg Natural Gas [Member]      
Document Information [Line Items]      
Entity Common Stock, Shares Outstanding   866,856  
Title of 12(b) Security ProShares UltraShort Bloomberg Natural Gas    
Security Exchange Name NYSEArca    
Trading Symbol KOLD    
Entity Public Float     141,324,963
ProShares UltraShort Euro [Member]      
Document Information [Line Items]      
Entity Common Stock, Shares Outstanding   1,350,000  
Title of 12(b) Security ProShares UltraShort Euro    
Security Exchange Name NYSEArca    
Trading Symbol EUO    
Entity Public Float     50,931,301
ProShares UltraShort Gold [Member]      
Document Information [Line Items]      
Entity Common Stock, Shares Outstanding   496,977  
Title of 12(b) Security ProShares UltraShort Gold    
Security Exchange Name NYSEArca    
Trading Symbol GLL    
Entity Public Float     15,809,378
ProShares UltraShort Silver [Member]      
Document Information [Line Items]      
Entity Common Stock, Shares Outstanding   941,329  
Title of 12(b) Security ProShares UltraShort Silver    
Security Exchange Name NYSEArca    
Trading Symbol ZSL    
Entity Public Float     19,290,473
ProShares UltraShort Yen [Member]      
Document Information [Line Items]      
Entity Common Stock, Shares Outstanding   348,580  
Title of 12(b) Security ProShares UltraShort Yen    
Security Exchange Name NYSEArca    
Trading Symbol YCS    
Entity Public Float     27,077,656
ProShares VIX Mid-Term Futures ETF [Member]      
Document Information [Line Items]      
Entity Common Stock, Shares Outstanding   2,287,403  
Title of 12(b) Security ProShares VIX Mid-Term Futures ETF    
Security Exchange Name CboeBZX    
Trading Symbol VIXM    
Entity Public Float     49,421,413
ProShares VIX Short-Term Futures ETF [Member]      
Document Information [Line Items]      
Entity Common Stock, Shares Outstanding   11,550,947  
Title of 12(b) Security ProShares VIX Short-Term Futures ETF    
Security Exchange Name CboeBZX    
Trading Symbol VIXY    
Entity Public Float     $ 230,227,830