1001 - Document - Cover Page link:presentationLink link:definitionLink link:calculationLink 1002 - Statement - Statements of Financial Condition link:presentationLink link:definitionLink link:calculationLink 1003 - Statement - Statements of Financial Condition (Parenthetical) link:presentationLink link:definitionLink link:calculationLink 1004 - Statement - Statements of Operations link:presentationLink link:definitionLink link:calculationLink 1005 - Statement - Statements of Changes in Shareholders' Equity link:presentationLink link:definitionLink link:calculationLink 1006 - Statement - Statements of Changes in Shareholders' Equity (Parenthetical) link:presentationLink link:definitionLink link:calculationLink 1007 - Statement - Statements of Cash Flows link:presentationLink link:definitionLink link:calculationLink 999001 - Disclosure - Organization link:presentationLink link:definitionLink link:calculationLink 999002 - Disclosure - Significant Accounting Policies link:presentationLink link:definitionLink link:calculationLink 999003 - Disclosure - Investments link:presentationLink link:definitionLink link:calculationLink 999004 - Disclosure - Agreements link:presentationLink link:definitionLink link:calculationLink 999005 - Disclosure - Investments In Affiliates link:presentationLink link:definitionLink link:calculationLink 999006 - Disclosure - Creation and Redemption of Creation Units link:presentationLink link:definitionLink link:calculationLink 999007 - Disclosure - Financial Highlights link:presentationLink link:definitionLink link:calculationLink 999008 - Disclosure - Risk link:presentationLink link:definitionLink link:calculationLink 999009 - Disclosure - Subsequent Events link:presentationLink link:definitionLink link:calculationLink 999010 - Disclosure - Significant Accounting Policies (Policies) link:presentationLink link:definitionLink link:calculationLink 999011 - Disclosure - Organization (Tables) link:presentationLink link:definitionLink link:calculationLink 999012 - Disclosure - Significant Accounting Policies (Tables) link:presentationLink link:definitionLink link:calculationLink 999013 - Disclosure - Investments (Tables) link:presentationLink link:definitionLink link:calculationLink 999014 - Disclosure - Investments In Affiliates (Tables) link:presentationLink link:definitionLink link:calculationLink 999015 - Disclosure - Creation and Redemption of Creation Units (Tables) link:presentationLink link:definitionLink link:calculationLink 999016 - Disclosure - Financial Highlights (Tables) link:presentationLink link:definitionLink link:calculationLink 999017 - Disclosure - Schedule of Investments - Short-Term U.S. Government and Agency Obligations (Detail) link:presentationLink link:definitionLink link:calculationLink 999018 - Disclosure - Schedule of Investments - Short-Term U.S. Government and Agency Obligations (Parenthetical) (Detail) link:presentationLink link:definitionLink link:calculationLink 999019 - Disclosure - Schedule of Investments - Short-Term U.S. Government and Agency Obligations (Parenthetical) (Detail) Alternate link:presentationLink link:definitionLink link:calculationLink 999020 - Disclosure - Schedule of Investments - Affiliated Investments (Detail) link:presentationLink link:definitionLink link:calculationLink 999021 - Disclosure - Schedule of Investments - Affiliated Investments (Parenthetical) (Detail) link:presentationLink link:definitionLink link:calculationLink 999022 - Disclosure - Schedule of Investments - Affiliated Investments (Parenthetical) (Detail) Alternate link:presentationLink link:definitionLink link:calculationLink 999023 - Disclosure - Schedule of Investments - Futures Contracts Sold (Detail) link:presentationLink link:definitionLink link:calculationLink 999024 - Disclosure - Schedule of Investments - Futures Contracts Purchased (Detail) link:presentationLink link:definitionLink link:calculationLink 999025 - Disclosure - Schedule of Investments - Total Return Swap Agreements (Detail) link:presentationLink link:definitionLink link:calculationLink 999026 - Disclosure - Schedule of Investments - Foreign Currency Forward Contracts (Detail) link:presentationLink link:definitionLink link:calculationLink 999027 - Disclosure - Organization - Additional Information (Detail) link:presentationLink link:definitionLink link:calculationLink 999028 - Disclosure - Organization - Schedule of Forward and Reverse Share Splits (Detail) link:presentationLink link:definitionLink link:calculationLink 999029 - Disclosure - Significant Accounting Policies - Cut-off Times and Times of Calculation of Funds' Final Net Asset Value for Creation and Redemption of Fund Shares (Detail) link:presentationLink link:definitionLink link:calculationLink 999030 - Disclosure - Significant Accounting Policies - Valuation of Investments using Fair Value Hierarchy (Detail) link:presentationLink link:definitionLink link:calculationLink 999031 - Disclosure - Significant Accounting Policies - Additional Information (Detail) link:presentationLink link:definitionLink link:calculationLink 999032 - Disclosure - Investments - Fair Value of Derivative Instruments (Detail) link:presentationLink link:definitionLink link:calculationLink 999033 - Disclosure - Investments - Effect of Derivative Instruments on Statements of Operations (Detail) link:presentationLink link:definitionLink link:calculationLink 999034 - Disclosure - Investments - Offsetting of Financial Assets and Liabilities (Detail) link:presentationLink link:definitionLink link:calculationLink 999035 - Disclosure - Investments - Gross Amounts Not Offset in Statements of Financial Condition (Detail) link:presentationLink link:definitionLink link:calculationLink 999036 - Disclosure - Agreements - Additional Information (Detail) link:presentationLink link:definitionLink link:calculationLink 999037 - Disclosure - Investments In Affiliates - Schedule of Investment Activity in Affiliated Fund (Detail) link:presentationLink link:definitionLink link:calculationLink 999038 - Disclosure - Creation and Redemption of Creation Units - Additional Information (Detail) link:presentationLink link:definitionLink link:calculationLink 999039 - Disclosure - Creation and Redemption of Creation Units - Schedule of Transaction Fees (Detail) link:presentationLink link:definitionLink link:calculationLink 999040 - Disclosure - Financial Highlights - Per Share Operating Performance (Detail) link:presentationLink link:definitionLink link:calculationLink 999041 - Disclosure - Financial Highlights - Per Share Operating Performance (Parenthetical) (Detail) link:presentationLink link:definitionLink link:calculationLink 999042 - Disclosure - Risk - Additional Information (Detail) link:presentationLink link:definitionLink link:calculationLink Cover [Abstract] Document Information [Table] Segments [Axis] Segments [Axis] Segments [Domain] Segments [Domain] Proshares Short VIX Short-Term Futures ETF [Member] ProShares Short VIX Short-Term Futures ETF [Member] ProShares short VIX short-term futures ETF Proshares Ultra Bloomberg Crude Oil [Member] ProShares Ultra Bloomberg Crude Oil [Member] ProShares Ultra Bloomberg crude oil. Proshares Ultra Bloomberg Natural Gas [Member] ProShares Ultra Bloomberg Natural Gas [Member] ProShares Ultra Bloomberg Natural Gas [Member] Proshares Ultra Bloomberg Natural Gas Proshares Ultra Euro [Member] ProShares Ultra Euro [Member] Proshares Ultra Gold [Member] ProShares Ultra Gold [Member] Proshares Ultra Gold Proshares Ultra Silver [Member] ProShares Ultra Silver [Member] Proshares Ultra Silver Proshares Ultra VIX Short Term Futures ETF [Member] ProShares Ultra VIX Short-Term Futures ETF [Member] Proshares Ultra VIX Short-Term Futures ETF Proshares Ultra Yen [Member] ProShares Ultra Yen [Member] Proshares Ultra Yen Proshares Ultra Short Bloomberg Crude Oil [Member] ProShares UltraShort Bloomberg Crude Oil [Member] ProShares UltraShort Bloomberg crude oil. Proshares Ultra Short Bloomberg Natural Gas [Member] ProShares UltraShort Bloomberg Natural Gas [Member] ProShares UltraShort Bloomberg natural gas. Proshares Ultra Short Euro [Member] ProShares UltraShort Euro [Member] ProShares UltraShort Euro. Proshares UltraShort Gold [Member] ProShares UltraShort Gold [Member] ProShares UltraShort gold. Proshares UltraShort Silver [Member] ProShares UltraShort Silver [Member] ProShares UltraShort silver. Proshares Ultra Short Yen [Member] ProShares UltraShort Yen [Member] ProShares UltraShort Yen. Proshares VIX Mid-Term Futures ETF [Member] ProShares VIX Mid-Term Futures ETF [Member] ProShares VIX mid-term futures ETF. Proshares VIX Short-Term Futures ETF [Member] ProShares VIX Short-Term Futures ETF [Member] ProShares VIX short-term futures ETF. Document Information [Line Items] Document Type Amendment Flag Document Quarterly Report Document Period End Date Document Transition Report Document Fiscal Year Focus Document Fiscal Period Focus Entity Registrant Name Entity Central Index Key Current Fiscal Year End Date Entity Incorporation, State or Country Code Entity Tax Identification Number Entity Address, Address Line One Entity Address, Address Line Two Entity Address, Address Line Three Entity Address, City or Town Entity Address, State or Province Entity Address, Postal Zip Code City Area Code Local Phone Number Entity Current Reporting Status Entity Interactive Data Current Entity Filer Category Entity Small Business Entity Emerging Growth Company Entity Shell Company Entity Common Stock, Shares Outstanding Title of 12(b) Security Security Exchange Name Trading Symbol Entity File Number Entity File Number Statement of Financial Position [Abstract] Statement [Table] Statement [Table] Financial Instrument [Axis] Investment Type [Axis] Financial Instruments [Domain] Investments [Domain] US Government Agencies Short-term Debt Securities [Member] U.S. Government Agencies Short-term Debt Securities [Member] Short-term U.S. Government and Agency Obligations [Member] Future [Member] Futures Contracts [Member] Swap [Member] Swap Agreements [Member] Foreign Exchange Forward [Member] Foreign Currency Forward Contracts [Member] Affiliated Investments [Member] Statement [Line Items] Statement [Line Items] Assets [Abstract] Assets Investment Owned, Fair Value Short-term U.S. government and agency obligations (Note 3) Short-term U.S. government and agency obligations, value Beginning, Value Ending, Value Cash Cash Cash and Securities Segregated under Federal and Other Regulations Segregated cash balances with brokers for futures contracts Receivable For Capital Shares Sold Receivable from capital shares sold Receivable for capital shares sold. Receivables from Brokers-Dealers and Clearing Organizations Receivable on open futures contracts Interest Receivable Interest receivable Derivative Asset Unrealized appreciation Net Amounts of Assets presented in the Statements of Financial Condition Assets Total assets Dividends Receivable Receivable for dividends from affiliates Advances to Affiliate Due from counterparty Liabilities and Equity [Abstract] Liabilities and shareholders' equity Liabilities [Abstract] Liabilities Payable For Capital Shares Redeemed Payable for capital shares redeemed Payable for capital shares redeemed. Broker-Dealer, Payable to Other Broker-Dealer and Clearing Organization, Total Payable on open futures contracts Brokerage Fees Payable To Broker Dealers And Clearing Organizations Brokerage commissions and futures account fees payable Brokerage fees payable to broker dealers and clearing organizations. Accounts Payable, Related Party, Type [Extensible Enumeration] Accounts Payable Payable to Sponsor Derivative Liability Unrealized depreciation Net Amounts of Liabilities presented in the Statements of Financial Condition Liabilities Total liabilities Commitments and Contingencies Commitments and Contingencies (Note 2) Stockholders' Equity Attributable to Parent [Abstract] Shareholders' equity Stockholders' Equity Attributable to Parent Shareholders' equity Shareholders' equity, beginning of period Shareholders' equity, end of period Liabilities and Equity Total liabilities and shareholders' equity Common Stock, Shares, Outstanding Shares outstanding Net Asset Value Per Share Net asset value per share Net asset value, beginning balance Net asset value, ending balance Market Value Per Share Market value per share Market value per share. Number Of Authorized Shares Not Disclosed Number of authorized shares not disclosed Number of authorized shares not disclosed. Common Stock Shares Issued Not Disclosed Common stock shares issued not disclosed Common stock shares issued not disclosed. Investment Owned, Cost Short-term U.S. government and agency obligations, cost Affiliated investments, cost Total short-term U.S. government and agency obligations, cost Income Statement [Abstract] Payment From Affiliate [Member] Payment from affiliate [Member] Investment Income, Net [Abstract] Investment Income Investment Income, Interest Interest Dividend Income, Operating Dividends from affiliates Dividend Income Revenues Total income Operating Expenses [Abstract] Expenses Management Fee Expense Management fee Noninterest Expense Commission Expense Brokerage commissions Futures Account Fees Futures account fees Futures account fees. Operating Expenses Total expenses Gain (Loss) on Investments [Abstract] Realized and unrealized gain (loss) on investment activity Realized Investment Gains (Losses) [Abstract] Net realized gain (loss) on Realized Investment Gains (Losses) Net realized gain (loss) Realized Gain (Loss) on Derivatives Recognized in Income Realized Gain (Loss) Investments Owned Unrealized Appreciation Depreciation Net [Abstract] Change in net unrealized appreciation (depreciation) on Investments owned unrealized appreciation depreciation net. Unrealized Gain (Loss) on Investments Change in net unrealized appreciation (depreciation) Change in Unrealized Appreciation/ Depreciation on Derivatives Recognized in Income Change in Unrealized Appreciation (Depreciation) Gain (Loss) on Investments Net realized and unrealized gain (loss) Net income (loss) Investment Income, Net Net investment income (loss) Net investment income (loss) Related and Nonrelated Parties [Axis] Related and Nonrelated Parties [Domain] Statement of Stockholders' Equity [Abstract] Stock Issued During Period, Value, New Issues Addition of shares Stock Repurchased During Period, Value Redemption of shares Stockholders' Equity, Period Increase (Decrease) Net addition (redemption) of shares Stock Issued During Period, Shares, New Issues Addition, shares Stock Repurchased During Period, Shares Redemption, shares Stock Issued During Period, Shares, Period Increase (Decrease) Net addition (redemption), shares Statement of Cash Flows [Abstract] Net Cash Provided by (Used in) Operating Activities [Abstract] Cash flow from operating activities Net Income (Loss), Including Portion Attributable to Noncontrolling Interest Net income (loss) Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract] Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities: Payment To Purchase Short Term US Government And Agency Obligations Purchases of short-term U.S. government and agency obligations Payment to purchase short term us government and agency obligations. Proceeds From Sales Or Maturities Of Short Term US Government And Agent Obligations Proceeds from sales or maturities of short-term U.S. government and agency obligations Proceeds from sales or maturities of short term us government and agent obligations. Accretion (Amortization) of Discounts and Premiums, Investments Net amortization and accretion on short-term U.S. government and agency obligations Gain (Loss) on Sale of Investments Net realized (gain) loss on investments Change In Net Unrealized Appreciation Depreciation Change in unrealized (appreciation) depreciation on investments Change in net unrealized appreciation depreciation. Decrease Increase In Receivable On Open Futures Contracts Decrease (Increase) in receivable on open futures contracts Decrease (increase) in receivable on open futures contracts. Increase (Decrease) in Accrued Interest Receivable, Net Decrease (Increase) in interest receivable Increase (Decrease) in Accounts Payable, Related Parties Increase (Decrease) in payable to Sponsor Increase (Decrease) in Payables to Broker-Dealers and Clearing Organizations Increase (Decrease) in brokerage commissions and futures account fees payable Increase Decrease In Payable On Futures Contracts Increase (Decrease) in payable on open futures contracts Increase (decrease) in payable on futures contracts. Cost Of Affiliated Investments Purchased Cost of affiliated investments purchased Purchases at Cost Cost of affiliated investments purchased. Proceeds From Affiliated Investments Sold Proceeds from affiliated investments sold Proceeds from affiliated investments sold. Increase (Decrease) Due from Affiliates Decrease (Increase) in receivable for dividends from affiliates Decrease Increase Due From Counterparty Decrease (Increase) in due from counterparty Decrease (Increase) in due from counterparty. Net Cash Provided by (Used in) Operating Activities Net cash provided by (used in) operating activities Net Cash Provided by (Used in) Financing Activities [Abstract] Cash flow from financing activities Proceeds from Issuance of Common Stock Proceeds from addition of shares Payments for Repurchase of Common Stock Payment on shares redeemed Net Cash Provided by (Used in) Financing Activities Net cash provided by (used in) financing activities Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect Net increase (decrease) in cash Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents Cash, beginning of period Cash, end of period Organization, Consolidation and Presentation of Financial Statements [Abstract] Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block] Organization Accounting Policies [Abstract] Significant Accounting Policies [Text Block] Significant Accounting Policies Investments, Debt and Equity Securities [Abstract] Investments in Debt and Marketable Equity Securities (and Certain Trading Assets) Disclosure [Text Block] Investments Text Block [Abstract] Agreements [Text Block] Agreements Agreements. Schedule of Investments [Abstract] Schedule of Investments [Text Block] Investments In Affiliates Creation And Redemption Of Creation Units [Text Block] Creation and Redemption of Creation Units Creation and redemption of creation units. Quarterly Financial Information Disclosure [Abstract] Quarterly Financial Information [Text Block] Financial Highlights Risks and Uncertainties [Abstract] Concentration Risk Disclosure [Text Block] Risk Subsequent Events [Abstract] Subsequent Events [Text Block] Subsequent Events Use of Estimates, Policy [Policy Text Block] Use of Estimates & Indemnifications Basis of Accounting, Policy [Policy Text Block] Basis of Presentation Cash and Cash Equivalents, Policy [Policy Text Block] Statements of Cash Flows Final Net Asset Value For Fiscal Period [Policy Text Block] Final Net Asset Value for Fiscal Period Final net asset value for fiscal period policy. Investment, Policy [Policy Text Block] Investment Valuation Fair Value of Financial Instruments, Policy [Policy Text Block] Fair Value of Financial Instruments Investment Transactions And Related Income [Policy Text Block] Investment Transactions and Related Income Investment transactions and related income. Revenue Recognition, Policy [Policy Text Block] Brokerage Commissions and Futures Account Fees Income Tax, Policy [Policy Text Block] Federal Income Tax Segment Reporting, Policy [Policy Text Block] Segment Reporting Schedule Of Forward And Reverse Splits [Table Text Block] Schedule of Forward and Reverse Share Splits Schedule of forward and reverse splits. Cutoff Times and Times of Calculation of Funds Final Net Asset Value for Creation and Redemption of Fund Shares [Table Text Block] Cut-off Times and Times of Calculation of Funds' Final Net Asset Value for Creation and Redemption of Fund Shares Cut-off Times and Times of Calculation Of Funds Final Net Asset Value For Creation And Redemption Of Fund Shares [Text Block] Summary of Investment Holdings, Schedule of Investments [Table Text Block] Valuation of Investments using Fair Value Hierarchy Schedule of Derivative Instruments in Statement of Financial Position, Fair Value [Table Text Block] Fair Value of Derivative Instruments Derivative Instruments, Gain (Loss) [Table Text Block] Effect of Derivative Instruments on Statements of Operations Schedule Of Offsetting Of Financial Derivative Assets And Liabilities [Table Text Block] Offsetting of Financial Assets and Liabilities Schedule of offsetting of financial derivative assets and liabilities. Schedule Of Gross Amount Not Offset Of Financial Derivative Assets And Liabilities [Table Text Block] Gross Amounts Not Offset in Statements of Financial Condition Schedule of gross amount not offset of financial derivative assets and liabilities. Investment Holdings, Schedule of Investments [Table Text Block] Schedule of Investment Activity in Affiliated Fund Schedule Of Transaction Fees [Table Text Block] Schedule of Transaction Fees Schedule of transaction fees. Per Share Operating Performance [Table Text Block] Per Share Operating Performance Per share operating performance. Schedule of Investments [Table] Schedule of Investments [Table] Investments Holding [Axis] Investment Holding [Axis] Investments holding axis. Investments Holding [Domain] Investment Holding [Domain] United States Treasury Bills Three Point Seven Zero Five Percent Due September Ten Two Thousand Twenty Six [Member] U.S. Treasury Bills 3.705% due 09/10/26 [Member] United States Treasury Bills Three Point Seven Six Three Percent Due September Twenty Four Two Thousand Twenty Six [Member] U.S. Treasury Bills 3.763% due 09/24/26 [Member] United States Treasury Bills Three Point Eight Zero Six Percent Due July Nine Two Thousand And Twenty Six [Member] U.S. Treasury Bills 3.806% due 07/09/26 [Member] United States Treasury Bills Three Point Six Seven Eight Percent Due July Fourteen Two Thousand And Twenty Six [Member] U.S. Treasury Bills 3.678% due 07/14/26 [Member] United States Treasury Bills Three Point Six Seven Three Percent Due August Six Two Thousand And Twenty Six [Member] U.S. Treasury Bills 3.673% due 08/06/26 [Member] United States Treasury Bills Three Point Seven Seven Three Percent Due September Eight Two Thousand And Twenty Six [Member] U.S. Treasury Bills 3.773% due 09/08/26 [Member] United States Treasury Bills Three Point Seven Zero Six Percent Due September Ten Two Thousand And Twenty Six [Member] U.S. Treasury Bills 3.706% due 09/10/26 [Member] United States Treasury Bills Three Point Seven Seven Zero Percent Due September Seventeen Two Thousand And Twenty Six [Member] U.S. Treasury Bills 3.770% due 09/17/26 [Member] United States Treasury Bills Three Point Seven Six Three Percent Due September Twenty Four Two Thousand And Twenty Six [Member] U.S. Treasury Bills 3.763% due 09/24/26 [Member] United States Treasury Bills Three Point Six Four Five Percent Due August Six Two Thousand And Twenty Six [Member] U.S. Treasury Bills 3.645% due 08/06/26 [Member] United States Treasury Bills Three Point Six Five Six Percent Due July Thirty Two Thousand And Twenty Six [Member] U.S. Treasury Bills 3.656% due 07/30/26 [Member] United States Treasury Bills Three Point Six Six Zero Percent Due July Thirty Two Thousand And Twenty Six [Member] U.S. Treasury Bills 3.660% due 07/30/26 [Member] United States Treasury Bills Three Point Six Four Two Percent Due August Six Two Thousand And Twenty Six [Member] U.S. Treasury Bills 3.642% due 08/06/26 [Member] United States Treasury Bills Three Point Six Seven Seven Percent Due July Fourteen Two Thousand And Twenty Six [Member] U.S. Treasury Bills 3.677% due 07/14/26 [Member] United States Treasury Bills Three Point Six Seven Four Percent Due July Thirty Two Thousand And Twenty Six [Member] U.S. Treasury Bills 3.674% due 07/30/26 [Member] United States Treasury Bills Three Point Six Six Seven Percent Due August Six Two Thousand And Twenty Six [Member] U.S. Treasury Bills 3.667% due 08/06/26 [Member] United States Treasury Bills Three Point Seven Six Zero Percent Due September Twenty Four Two Thousand And Twenty Six [Member] U.S. Treasury Bills 3.760% due 09/24/26 [Member] United States Treasury Bills Three Point Seven Seven Eight Percent Due July Twenty One Two Thousand And Twenty Six [Member] U.S. Treasury Bills 3.778% due 07/21/26 [Member] United States Treasury Bills Three Point Six Three Three Percent Due August Six Two Thousand And Twenty Six [Member] U.S. Treasury Bills 3.633% due 08/06/26 [Member] United States Treasury Bills Three Point Six Three Nine Percent Due August Six Two Thousand And Twenty Six [Member] U.S. Treasury Bills 3.639% due 08/06/26 [Member] United States Treasury Bills Three Point Seven Seven One Percent Due September Seventeen Two Thousand And Twenty Six [Member] U.S. Treasury Bills 3.771% due 09/17/26 [Member] Schedule of Investments [Line Items] Schedule of Investments [Line Items] Investment Owned, Balance, Principal Amount Principal Amount Investment Owned, Net Assets, Percentage Short-term U.S. government and agency obligations percentage of shareholders' equity Short-term U.S. government and agency obligations percentage of shareholders' equity Investment Interest Rate Interest rate Investment Interest Rate Is Discount Rate On Purchase Flag Discount rate at the time of purchase Investment interest rate is discount rate on purchase flag. Investment Maturity Date Investment, maturity date Investment, Identifier [Axis] Number of shares of affiliates investment held Number of shares of affiliates investment held. Exchange Traded Fund ProShares Genius Money Market ETF Three Point Five Four Percent [Member] Exchange Traded Fund Proshares Genius Money Market ETF 3.54% Exchange Traded Fund ProShares Genius Money Market ETF Three Point Five Two Percent [Member] Exchange Traded Fund Proshares Genius Money Market ETF 3.52% Money Market Investment Interest Rate Money market investment interest rate Money market investment interest rate. Position [Axis] Position [Axis] Position [Domain] Position [Domain] Short [Member] Contracts to Sell [Member] WTI Crude Oil NYMEX Expires December Two Thousand And Twenty Six [Member] WTI Crude Oil - NYMEX, expires December 2026 [Member] Wti crude oil nymex expires december two thousand and twenty six. WTI Crude Oil NYMEX Expires June Two Thousand And Twenty Seven [Member] WTI Crude Oil - NYMEX, expires June 2027 [Member] Wti crude oil nymex expires june two thousand and twenty seven. VIX Futures Cboe Expires July Two Thousand And Twenty Six [Member] VIX Futures - Cboe, expires July 2026 [Member] VIX Futures Cboe Expires August Two Thousand And Twenty Six [Member] VIX Futures - Cboe, expires August 2026 [Member] WTI Crude Oil NYMEX Expires September Two Thousand And Twenty Six [Member] WTI Crude Oil - NYMEX, expires September 2026 [Member] Natural Gas NYMEX Expires September Two Thousand And Twenty Six [Member] Natural Gas - NYMEX, expires September 2026 [Member] Gold Futures COMEX Expires August Two Thousand And Twenty Six [Member] Gold Futures - COMEX, expires August 2026 [Member] Silver Futures COMEX Expires September Two Thousand And Twenty Six [Member] Silver Futures - COMEX, expires September 2026 [Member] Derivative, Number of Instruments Held Number of Contracts Derivative, Notional Amount Notional Amount at Value Investments Owned Unrecognized Unrealized Appreciation Depreciation Net Unrealized Appreciation (Depreciation)/Value Unrealized Appreciation (Depreciation)/Value Investments owned unrecognized unrealized appreciation depreciation net. Long [Member] Contracts to Purchase [Member] Vix Futures Cboe Expires October Two Thousand And Twenty Six [Member] VIX Futures - Cboe, expires October 2026 [Member] VIX Futures Cboe Expires November Two Thousand And Twenty Six [Member] VIX Futures - Cboe, expires November 2026 [Member] VIX Futures Cboe Expires December Two Thousand And Twenty Six [Member] VIX Futures - Cboe, expires December 2026 [Member] VIX Futures Cboe Expires January Two Thousand And Twenty Seven [Member] VIX Futures - Cboe, expires January 2027 [Member] Counterparty Name [Axis] Counterparty Name [Axis] Counterparty Name [Domain] Counterparty Name [Domain] Citibank N-a-[Member] Citibank N.A. [Member] Citibank, N.A. [Member] Citibank Na [Member] Goldman Sachs [Member] Goldman Sachs International [Member] Goldman Sachs. Morgan Stanley and Co International PLC [Member] Morgan Stanley & Co. International PLC [Member] Morgan Stanley and Co International PLC. Societe Generale Sa [Member] Societe Generale [Member] Societe Generale [Member] Societe Generale S.A. UBS Ag [Member] UBS AG [Member] UBS AG. WTI Crude Oil Subindex [Member] WTI Crude Oil Subindex [Member] WTI Crude Oil Subindex. Gold Subindex [Member] Silver Subindex [Member] Legal Entity [Axis] Entity [Domain] Bloomberg [Member] Derivative, Swaption Interest Rate Rate Paid (Received) Derivative, Maturity Date Termination Date Settlement Date Derivative Asset, Notional Amount Notional Amount at Value Contract to Purchase Euro Contract [Member] Euro Contract [Member] Euro Contract [Member] Yen Contract [Member] Yen Contract [Member] Yen Contract. Derivative Liability, Notional Amount Contract to Sell Subsidiary or Equity Method Investee, Sale of Stock by Subsidiary or Equity Investee [Table] Subsidiary or Equity Method Investee, Sale of Stock by Subsidiary or Equity Investee [Table] Sale of Stock [Axis] Sale of Stock [Axis] Sale of Stock [Domain] Sale of Stock [Domain] Subsidiary, Sale of Stock [Line Items] Subsidiary, Sale of Stock [Line Items] Sale of Stock, Number of Shares Issued in Transaction Share issued, shares Sale of Stock, Consideration Received on Transaction Shares issued, value Period For Expected Multiple Returns Period for expected multiple returns Period for expected multiple returns. Number of Reportable Segments Organization [Table] Organization [Table] Organization [Table] Scenario [Axis] Scenario [Axis] Scenario [Domain] Scenario, Unspecified [Domain] June Twelve Two Thousand And Twenty Five Reverse Share Split [Member] June 12, 2025 Reverse Share Split [Member] june twelve two thousand and twenty five reverse share split. June Twelve Two Thousand And Twenty Five Forward Share Split [Member] June 12, 2025 Forward Share Split [Member] June twelve two thousand and twenty five forward share split. November Nineteen Two Thousand And Twenty Five Reverse Share Split [Member] November 19, 2025 Reverse Share Split [Member] November nineteen two thousand and twenty five reverse share split. February Twenty Six Two Thousand And Twenty Six Reverse Share Split [Member] February 26, 2026 Reverse Share Split [Member] May Twenty Seven Two Thousand And Twenty Six Reverse Share Split [Member] May 27, 2026 Reverse Share Split [Member] Organization [Line Items] Organization [Line Items] Organization. Execution Date Execution Date Execution date. Stockholders' Equity Note, Stock Split Type of Split Post Split Price, Trading Resumed Date Date Trading Resumed at Post- Split Price Post split price, trading resumed date. Significant Accounting Policies [Table] Significant Accounting Policies [Table] Significant Accounting Policies [Table] Ultra Euro, Ultra Yen, Ultra Short Euro and Ultra Short Yen [Member] Ultra Euro, Ultra Yen, Ultrashort Euro and Ultrashort Yen Ultra euro, Ultra yen, Ultra short euro and ultra short yen. Net Asset Value [Line Items] Net Asset Value [Line Items] Net Asset Value [Line Items] Create or Redeem Cut-off Create/Redeem Cut-off Create or redeem cut off. Net Asset Value Calculation Time NAV Calculation Time Net asset value calculation time. Net Asset Value Calculation Date NAV Calculation Date Net asset value calculation date. Fair Value Measurement Inputs and Valuation Techniques [Table] Fair Value Measurement Inputs and Valuation Techniques [Table] Fair Value Hierarchy and NAV [Axis] Fair Value Hierarchy and NAV [Axis] Fair Value Hierarchy and NAV [Domain] Fair Value Hierarchy and NAV [Domain] Fair Value, Inputs, Level 1 [Member] Level I - Quoted Prices [Member] Fair Value, Inputs, Level 2 [Member] Level II - Other Significant Observable Inputs [Member] US Treasury and Government Short-term Debt Securities [Member] Short-Term U.S. Government and Agencies [Member] Exchange Traded Fund [Member] Exchange traded fund. Fair Value Measurement Inputs and Valuation Techniques [Line Items] Fair Value Measurement Inputs and Valuation Techniques [Line Items] Alternative Investment Investments, fair value disclosure Range [Axis] Range [Axis] Range [Domain] Range [Domain] Minimum [Member] Minimum [Member] Matching VIX Funds [Member] Matching VIX Funds [Member] Fund group consisting of ProShares VIX Short-Term Futures ETF and ProShares VIX Mid-Term Futures ETF (each, a Matching VIX Fund and collectively, the Matching VIX Funds). Significant Accounting Policies [Line Items] Significant Accounting Policies [Line Items] Significant accounting policies. Percentage Of Brokerage Commissions Exceed Variable Create Or Redeem Fees Percentage of brokerage commissions exceed variable create/redeem fees Percentage of brokerage commissions exceed variable create/redeem fees. Offsetting [Abstract] Derivative Instruments, Gain (Loss) [Table] Derivative Instruments, Gain (Loss) [Table] Derivative Instrument [Axis] Derivative Instrument [Axis] Derivative Contract [Domain] Derivative Contract [Domain] Volatility Index Future [Member] VIX Futures Contracts [Member] Volatility Index Future [Member] Commodity Contract [Member] Commodity Contracts [Member] Foreign Exchange Contract [Member] Foreign Exchange Contracts [Member] Balance Sheet Line [Axis] Balance Sheet Location [Axis] Balance sheet location. Balance Sheet Line [Domain] Balance Sheet Location [Domain] Balance sheet location. Receivable On Open Futures Contracts [Member] Receivable on open futures contracts [Member] Receivable on open futures contracts. Payable On Open Futures Contracts [Member] Payable on open futures contracts [Member] Payable on open futures contracts. Receivables On Open Futures Contracts Unrealized Appreciation On Swap And Or Forward Contracts [Member] Receivables on open futures contracts and/or unrealized appreciation on swap agreements [Member] Receivables on open futures contracts, unrealized appreciation on swap and/or forward contracts. Payable On Open Futures Contracts Unrealized Depreciation On Swap And Or Forward Agreements [Member] Payable on open futures contracts and/or unrealized depreciation on swap agreements [Member] Payable on open futures contracts, unrealized depreciation on swap and/or forward agreements. Unrealized Appreciation On Foreign Currency Forward Contracts [Member] Unrealized appreciation on foreign currency forward contracts [Member] Unrealized appreciation on foreign currency forward contracts. Unrealized Depreciation On Foreign Currency Forward Contracts [Member] Unrealized depreciation on foreign currency forward contracts [Member] Unrealized depreciation on foreign currency forward contracts. Hedging Designation [Axis] Hedging Designation [Axis] Hedging Designation [Domain] Hedging Designation [Domain] Not Designated as Hedging Instrument [Member] Not Designated as Hedging Instrument [Member] Derivative Instruments, Gain (Loss) [Line Items] Derivative Instruments, Gain (Loss) [Line Items] Investments Owned Unrecognized Unrealized Appreciation Derivatives asset not accounted for as hedging instruments, Unrealized Appreciation Investments owned unrecognized unrealized appreciation. Investments Owned Unrecognized Unrealized Depreciation Derivatives liability not accounted for as hedging instruments, Unrealized Depreciation Investments owned unrecognized unrealized depreciation. Income Statement Line [Axis] Income Statement Location [Axis] Income statement location. Income Statement Line [Domain] Income Statement Location [Domain] Income statement location. Net Realized Gain Loss On Futures Contracts Changes In Unrealized Appreciation Depreciation On Futures Contracts [Member] Net realized gain (loss) on futures contracts/ changes in unrealized appreciation (depreciation) on futures contracts [Member] Net realized gain (loss) on futures contracts/ changes in unrealized appreciation (depreciation) on futures contracts. Net Realized Gain Loss On Futures Contracts And Swap Agreements Changes In Unrealized Appreciation Depreciation On Futures Contracts And Swap Agreements [Member] Net realized gain (loss) on futures contracts and swap agreements/ changes in unrealized appreciation (depreciation) on futures contracts and swap agreements [Member] Net realized gain (loss) on futures contracts and swap agreements/ changes in unrealized appreciation (depreciation) on futures contracts and swap agreements. Net Realized Gain Loss On Foreign Currency Forward Contracts Changes In Unrealized Appreciation Depreciation On Foreign Currency Forward Contracts [Member] Net realized gain (loss) on foreign currency forward contracts/ changes in unrealized appreciation (depreciation) on foreign currency forward contracts [Member] Net realized gain (loss) on foreign currency forward contracts changes in unrealized appreciation (depreciation) on foreign currency forward contracts. Derivative [Table] Derivative [Table] Derivative [Line Items] Derivative [Line Items] Cash Collateral for the Benefit of (the Funds) / the Counterparties Derivative Asset, Fair Value, Gross Asset Gross Amounts of Recognized Assets presented in the Statements of Financial Condition Derivative Asset, Collateral, Obligation to Return Cash, Offset Gross Amounts Offset in the Statements of Financial Condition Derivative Liability, Fair Value, Gross Liability Gross Amounts of Recognized Liabilities presented in the Statements of Financial Condition Derivative Liability, Collateral, Right to Reclaim Cash, Offset Gross Amounts Offset in the Statements of Financial Condition Derivative Assets (Liabilities), at Fair Value, Net Amounts of Recognized Assets / (Liabilities) presented in the Statements of Financial Condition Derivative Assets Liabilities Not Subject to Master Netting Arrangement Deduction Financial Instruments for the Benefit of (the Funds) / the Counterparties Fair value of financial asset or other contract (liability or other contract) with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset, not subject to a master netting arrangement, deducted from derivative assets. Derivative Collateral Obligation to Return Cash Right to Reclaim Cash Cash Collateral for the Benefit of (the Funds) / the Counterparties Amount of obligation to return cash collateral (right to receive cash collateral) under master netting arrangements that have not been offset against derivative assets. Derivative Asset Liability Fair Value Offset Against Collateral Net Of Not Subject To Master Netting Arrangement Policy Election Net Amounts Fair value, after effects of master netting arrangements, deduction of assets (liabilities) not subject to a master netting arrangement and elected not to be offset, of financial asset or other contract (liability or contract) with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset, offset against an obligation to return collateral. Health Care Organizations [Abstract] Summary of Investment Holdings [Table] Summary of Investment Holdings [Table] Leveraged Fund [Member] Leveraged Fund [Member] Fund group consisting of "ProShares UltraShort Bloomberg Crude Oil, ProShares UltraPro 3x Short Crude Oil, ProShares UltraShort Bloomberg Natural Gas, ProShares UltraShort Gold, ProShares UltraShort Silver, ProShares UltraShort Australian Dollar, ProShares UltraShort Euro, ProShares UltraShort Yen, ProShares Ultra Bloomberg Crude Oil, ProShares UltraPro 3x Crude Oil, ProShares Ultra Bloomberg Natural Gas, ProShares Ultra Gold, ProShares Ultra Silver, ProShares Ultra Euro and ProShares Ultra Yen (each, a "Leveraged Fund" and collectively, the "Leveraged Funds"). GearedVix Funds [Member] GearedVix Funds [Member] Fund group consisting of ProShares Short VIX Short Term Futures ETF and ProShares Ultra VIX Short Term Futures ETF (each, a Geared VIX Fund and collectively, the Geared VIX Funds). Proshares Short Euro [Member] ProShares Short Euro [Member] ProShares short Euro. Summary of Investment Holdings [Line Items] Summary of Investment Holdings [Line Items] Percentage Of Average Daily NAV Of Fund Management Fee paid to sponsor, percent per annum of the average daily NAV of each Geared Fund Percentage of average daily NAV of fund. Ceiling For Fee Paid To Administrative And Legal Facilitators Ceiling for legal fees Ceiling for fee paid to administrative and legal facilitators. Ceiling for Ongoing SEC Registration Fee of Percentage of Annual Nav Percentage of annual NAV as limit to pay SEC registration fees incurred Ceiling for ongoing SEC registration fee of percentage of annual Nav. Ceiling for Preparation and Mailing Fee of Percentage of Annual Nav Ceiling for per annum K-1 preparation and mailing fees against annual net assets of Fund Ceiling for preparation and mailing fee of percentage of annual Nav. Proceeds from Sale of Other Investments Proceeds from Sales Investment, Issuer Affiliation [Axis] Investment, Issuer Affiliation [Domain] Equity [Abstract] Creation And Redemption Of Creation Units [Table] Creation And Redemption Of Creation Units [Table] Creation And Redemption Of Creation Units [Table] Creation And Redemption Of Creation Units [Line Items] Creation And Redemption Of Creation Units [Line Items] Creation and redemption of creation units. Creation Unit Block Shares Of Fund Creation Unit, block Shares of a Fund Creation unit, block shares of a fund. Fixed transaction fee per creation unit maximum Fixed transaction fee per Creation Unit, maximum Fixed transaction fee per creation unit, maximum. Variable Transaction Fee Percent Of Value Of Creation Unit Maximum Variable transaction fee, percent of the value of the Creation Unit, maximum Variable transaction fee, percent of the value of the creation unit, maximum. Investment Company, Shareholder Service Fee Expense Transaction fees Investment Company [Abstract] Investment Company, Financial Highlights [Table] Investment Company, Financial Highlights [Table] Class of Stock [Axis] Class of Stock [Domain] Investment Company, Financial Highlights [Line Items] Investment Company, Financial Highlights [Line Items] Investment Company, Investment Income (Loss), Per Share Net investment income (loss) Investment Company, Gain (Loss) on Investment, Per Share Net realized and unrealized gain (loss) Investment Company, Investment Income (Loss) from Operations, Per Share Change in net asset value from operations Share Price Market value per share, beginning balance Market value per share, ending balance Investment Company, Total Return Total Return, at net asset value Return At Market Value Per Share Total Return, at market value Total return, at market value, per share. Investment Company, Financial Ratios [Abstract] Ratios to Average Net Assets Investment Company, Investment Income (Loss) Ratio Net investment income gain (loss) Investment Company, Expense Ratio, after Fee Waiver and Incentive Fee Deduction Expense ratio Investment Company Expense Ratio Excluding NonRecurring Fees And Expenses Expense ratio, excluding non-recurring fees and expenses Represents Percentage, after deduction of fee waiver and before deduction of Nonrecurring fees and expenses average net assets. Unusual Risk or Uncertainty [Table] Unusual Risk or Uncertainty [Table] UltraShort Fund [Member] Ultrashort Fund [Member] UltraShort fund. Unusual Risk or Uncertainty [Line Items] Unusual Risk or Uncertainty [Line Items] Inverse Correlation Description Inverse correlation, description Inverse correlation description. Period Percentage Threshold Risk Related To Changes In Benchmark Interest Rate Leverage risk benchmark Risk related to changes in benchmark interest rate approaching a specified percentage at any point in the day. Related Party [Member]