Label	Element	Value
Risk Return Abstract	rr_RiskReturnAbstract
Registrant Name	dei_EntityRegistrantName	ProFunds
Prospectus Date	rr_ProspectusDate	Feb. 08, 2024
UltraBear ProFund
Risk Return Abstract	rr_RiskReturnAbstract
Risk/Return [Heading]	rr_RiskReturnHeading	<span style="color:#000000;font-family:Arial;font-size:10pt;font-weight:bold;">Important Information About the Fund</span><span style="color:#000000;font-family:Arial;font-size:10pt;margin-left:0%;">If the Fund is successful in meeting its investment objective, it </span><span style="color:#000000;font-family:Arial;font-size:10pt;">should gain approximately two times the inverse as much as the Index when the Index rises on a given day. Conversely, it should lose approximately two times the inverse as much as the Index when the Index falls on a given day. </span><span style="color:#000000;font-family:Arial;font-size:10pt;font-weight:bold;">The Fund does not seek to achieve two times the inverse (-2x) the daily performance of the Index (the “Daily Target”) for any period other than a day.</span><span style="color:#000000;font-family:Arial;font-size:10pt;margin-left:0%;">While the Fund has a daily investment objective, you may hold </span><span style="color:#000000;font-family:Arial;font-size:10pt;">Fund shares for longer than one day if you believe doing so is consistent with your goals and risk tolerance. </span><span style="color:#000000;font-family:Arial;font-size:10pt;font-weight:bold;">If you hold fund shares for any period other than a day, it is important for you to understand that over your holding period:</span><span style="color:#000000;font-family:Arial;font-size:10pt;margin-left:-4.19%;">•</span><span style="color:#000000;font-family:Arial;font-size:10pt;margin-left:6pt;">Your return may be higher or lower than the Daily Target, and </span><span style="color:#000000;font-family:Arial;font-size:10pt;">this difference may be significant.</span><span style="color:#000000;font-family:Arial;font-size:10pt;margin-left:-4.19%;">•</span><span style="color:#000000;font-family:Arial;font-size:10pt;margin-left:6pt;">Factors that contribute to returns that are worse than the Daily </span><span style="color:#000000;font-family:Arial;font-size:10pt;">Target include smaller Index gains or losses and higher Index volatility, as well as longer holding periods when these factors apply.</span><span style="color:#000000;font-family:Arial;font-size:10pt;margin-left:-4.19%;">•</span><span style="color:#000000;font-family:Arial;font-size:10pt;margin-left:6pt;">Factors that contribute to returns that are better than the Daily </span><span style="color:#000000;font-family:Arial;font-size:10pt;">Target include larger Index gains or losses and lower Index volatility, as well as longer holding periods when these factors apply.</span><span style="color:#000000;font-family:Arial;font-size:10pt;margin-left:-4.19%;">•</span><span style="color:#000000;font-family:Arial;font-size:10pt;margin-left:6pt;">The more extreme these factors are, and the more they occur </span><span style="color:#000000;font-family:Arial;font-size:10pt;">together, the more your return will tend to deviate from the Daily Target.</span>
Objective [Heading]	rr_ObjectiveHeading	<span style="color:#000000;font-family:Arial;font-size:10pt;font-weight:bold;">Investment Objective</span>
Objective, Primary [Text Block]	rr_ObjectivePrimaryTextBlock	UltraBear ProFund (the “Fund”) seeks daily investment results, before fees and expenses, that correspond to two times the inverse (-2x) of the daily performance of the S&P 500® Index (the “Index”).
Expense [Heading]	rr_ExpenseHeading	<span style="color:#000000;font-family:Arial;font-size:10pt;font-weight:bold;">Fees and Expenses of the Fund</span>
Expense Narrative [Text Block]	rr_ExpenseNarrativeTextBlock	The table below describes the fees and expenses that you may pay if you buy, hold, and sell shares of the Fund. You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in the tables and examples below.
Shareholder Fees Caption [Text]	rr_ShareholderFeesCaption	<span style="color:#000000;font-family:Arial;font-size:10pt;font-weight:bold;">Shareholder Fees</span><span style="color:#000000;font-family:Arial;font-size:10pt;">(fees paid directly from your investment)</span>
Operating Expenses Caption [Text]	rr_OperatingExpensesCaption	<span style="color:#000000;font-family:Arial;font-size:9pt;font-weight:bold;margin-left:0.0pt;">Annual Fund Operating Expenses</span><span style="color:#000000;font-family:Arial;font-size:9pt;margin-left:0.0pt;">(expenses that you pay each year as a percentage of the </span><span style="color:#000000;font-family:Arial;font-size:9pt;margin-left:0.0pt;">value of your investment)</span>
Fee Waiver or Reimbursement over Assets, Date of Termination	rr_FeeWaiverOrReimbursementOverAssetsDateOfTermination	<span style="color:#000000;font-family:Arial;font-size:8pt;">November 30, 2024</span>
Portfolio Turnover [Heading]	rr_PortfolioTurnoverHeading	<span style="color:#000000;font-family:Arial;font-size:10pt;font-weight:bold;">Portfolio Turnover</span>
Portfolio Turnover [Text Block]	rr_PortfolioTurnoverTextBlock	The Fund pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when the Fund’s shares are held in a taxable account. These costs, which are not reflected in the Annual Fund Operating Expenses or in the example above, affect the Fund’s performance. During the most recent fiscal year, the Fund’s annual portfolio turnover rate was 0% of the average value of its portfolio. This portfolio turnover rate is calculated without regard to cash instruments or derivatives transactions. If such transactions were included, the Fund’s portfolio turnover rate would be significantly higher.
Portfolio Turnover, Rate	rr_PortfolioTurnoverRate	none
Expense Example [Heading]	rr_ExpenseExampleHeading	<span style="color:#000000;font-family:Arial;font-size:10pt;font-weight:bold;margin-left:0%;">Example: </span>
Expense Example Narrative [Text Block]	rr_ExpenseExampleNarrativeTextBlock	This example is intended to help you compare the cost of investing in the Fund with the cost of investing in other funds.The example assumes that you invest $10,000 in the Fund for the time periods indicated and then redeem or hold all of your shares at the end of each period. The example also assumes that your investment has a 5% return each year and that the Fund’s operating expenses remain the same, except that the fee waiver/expense reimbursement is assumed only to pertain to the first year. Although your actual costs may be higher or lower, based on these assumptions your approximate costs would be:
Expense Example Closing [Text Block]	rr_ExpenseExampleClosingTextBlock	The Fund pays transaction and financing costs associated with the purchase and sale of securities and derivatives. These costs are not reflected in the table or the example above.
Strategy [Heading]	rr_StrategyHeading	<span style="color:#000000;font-family:Arial;font-size:10pt;font-weight:bold;">Principal Investment Strategies</span>
Strategy Narrative [Text Block]	rr_StrategyNarrativeTextBlock	The Fund invests in financial instruments that ProFund Advisors believes, in combination, should produce daily returns consistent with the Daily Target.The Index is constructed and maintained by S&P Dow Jones Indices LLC. The Index is a measure of large-cap U.S. stock market performance. It is a market capitalization-weighted index of 500 U.S. operating companies and real estate investment trusts selected through a process that factors in criteria such as liquidity, price, market capitalization, financial viability and public float. More information about the Index is published under the Bloomberg ticker symbol “SPX.”Under normal circumstances, the Fund will obtain inverse leveraged exposure to at least 80% of its total assets in component securities of the Index or in instruments with similar economic characteristics.The Fund will invest principally in the financial instruments listed below.•Derivatives — Financial instruments whose value is derived from the value of an underlying asset or rate, such as stocks, bonds, ETFs, interest rates or indexes. These derivatives principally include:○Swap Agreements — Contracts entered into primarily with major global financial institutions for a specified period ranging from a day to more than one year. In a standard swap transaction, two parties agree to exchange or “swap” payments based on the change in value of an underlying asset or benchmark. For example, two parties may agree to exchange the return (or differentials in rates of returns) earned or realized on a particular investment or instrument.○Futures Contracts — Standardized contracts that obligate the parties to buy or sell an asset at a predetermined price and date in the future.•Money Market Instruments — The Fund expects that any cash balances maintained in connection with its use of derivatives will typically be held in high quality, short-term money market instruments, for example:○U.S. Treasury Bills — U.S. government securities that have initial maturities of one year or less, and are supported by the full faith and credit of the U.S. government.○Repurchase Agreements — Contracts in which a seller of securities, usually U.S. government securities or other money market instruments, agrees to buy the securities back at a specified time and price.ProFund Advisors uses a mathematical approach to investing in which it determines the type, quantity and mix of investment positions that it believes, in combination, the Fund should hold to produce daily returns consistent with the Daily Target. For these purposes a day is measured from the time of one net asset value (“NAV”) calculation to the next.The Fund seeks to remain fully invested at all times in financial instruments that, in combination, provide inverse leveraged exposure consistent with the investment objective, without regard to market conditions, trends or direction. However, the Fund may invest in or gain exposure to only a representative sample of the securities in the Index or to securities not contained in the Index or in financial instruments, with the intent of obtaining inverse leveraged exposure consistent with the investment objective.The Fund seeks to rebalance its portfolio each day so that its exposure to the Index is consistent with the Daily Target. The Index’s movements during the day will affect whether the Fund’s portfolio needs to be rebalanced. For example, if the Index has risen on a given day, net assets of the Fund should fall (assuming there were no shares issued). As a result, the Fund’s exposure will need to be decreased. Conversely, if the Index has fallen on a given day, net assets of the Fund should rise (assuming there were no share redemptions). As a result, the Fund’s exposure will need to be increased.Please see “Investment Objectives, Principal Investment Strategies and Related Risks” in the Fund’s Prospectus for additional details.
Risk [Heading]	rr_RiskHeading	<span style="color:#000000;font-family:Arial;font-size:10pt;font-weight:bold;">Principal Risks</span>
Risk [Text Block]	rr_RiskTextBlock	•Leverage Risk — The Fund uses leverage and will lose more money when the value of the Index rises than a similar fund that does not use leverage. The use of leverage increases the risk of a total loss of your investment. If the Index approaches a 50% gain at any point in the day, you could lose your entire investment. As a result, an investment in the Fund may not be suitable for all investors. The use of leverage increases the volatility of your returns. The cost of obtaining this leverage will lower your returns.Estimated Fund ReturnsIndex PerformanceOne Year Volatility RateOneYearIndexTwo timesthe inverse(-2x) of theOne YearIndex10%25%50%75%100%-60%120%506.5%418.1%195.2%15.6%-68.9%-50%100%288.2%231.6%88.9%-26.0%-80.1%-40%80%169.6%130.3%31.2%-48.6%-86.2%-30%60%98.1%69.2%-3.6%-62.2%-89.8%-20%40%51.6%29.5%-26.2%-71.1%-92.2%-10%20%19.8%2.3%-41.7%-77.2%-93.9%0%0%-3.0%-17.1%-52.8%-81.5%-95.0%10%-20%-19.8%-31.5%-61.0%-84.7%-95.9%20%-40%-32.6%-42.4%-67.2%-87.2%-96.5%30%-60%-42.6%-50.9%-72.0%-89.1%-97.1%40%-80%-50.5%-57.7%-75.9%-90.6%-97.5%50%-100%-56.9%-63.2%-79.0%-91.8%-97.8%60%-120%-62.1%-67.6%-81.5%-92.8%-98.1%The Index’s annualized historical volatility rate for the five-year period ended July 31, 2023 was 21.83%. The Index’s highest July to July volatility rate during the five-year period was 33.93% (July 31, 2020). The Index’s annualized total return performance for the five-year period ended July 31, 2023 was 12.19%. Historical Index volatility and performance do not predict future Index volatility and performance.For more information, including additional graphs and charts demonstrating the effects of Index volatility and Index return on the long-term performance of the Fund, see “Understanding the Risks and Long-Term Performance of a Daily Objective Fund” in the Fund’s Prospectus.
Bar Chart and Performance Table [Heading]	rr_BarChartAndPerformanceTableHeading	<span style="color:#000000;font-family:Arial;font-size:10pt;font-weight:bold;">Investment Results</span>
Performance Narrative [Text Block]	rr_PerformanceNarrativeTextBlock	The bar chart below shows how the Fund’s investment results for Investor Class shares have varied from year to year, and the table shows how the Fund’s average annual total returns for various periods compare with a broad measure of market performance.Performance for Service Class shares would differ to the extent their fees and expenses differ. This information provides some indication of the risks of investing in the Fund. In addition, the Fund’s performance information reflects applicable fee waivers and/or expense limitations, if any, in effect during the periods presented. Absent such fee waivers/expense limitations, if any, performance would have been lower. Past results (before and after taxes) are not predictive of future results. Updated information on the Fund’s results can be obtained by visiting the Fund’s website (www.profunds.com).
Performance Information Illustrates Variability of Returns [Text]	rr_PerformanceInformationIllustratesVariabilityOfReturns	<span style="color:#000000;font-family:Arial;font-size:10pt;margin-left:0%;">The bar chart below shows how the Fund’s investment results for </span><span style="color:#000000;font-family:Arial;font-size:10pt;">Investor Class shares have varied from year to year, and the table shows how the Fund’s average annual total returns for various periods compare with a broad measure of market performance.</span>
Performance Availability Website Address [Text]	rr_PerformanceAvailabilityWebSiteAddress	<span style="color:#000000;font-family:Arial;font-size:10pt;">(www.profunds.com)</span>
Performance Past Does Not Indicate Future [Text]	rr_PerformancePastDoesNotIndicateFuture	<span style="color:#000000;font-family:Arial;font-size:10pt;">Past results (before and after taxes) are not predictive of future results.</span>
Bar Chart [Heading]	rr_BarChartHeading	<span style="color:#000000;font-family:Arial;font-size:10pt;font-weight:bold;">Annual Returns as of December 31</span>
Bar Chart Closing [Text Block]	rr_BarChartClosingTextBlock	Best Quarter(ended6/30/2022):34.03%Worst Quarter(ended6/30/2020):-36.58%Year-to-Date(ended9/30/2023):-16.98%
Performance Table Heading	rr_PerformanceTableHeading	<span style="color:#000000;font-family:Arial;font-size:10pt;font-weight:bold;">Average Annual Total Returns</span><span style="color:#000000;font-family:Arial;font-size:10pt;">As of December 31, 2022</span>
Index No Deduction for Fees, Expenses, Taxes [Text]	rr_IndexNoDeductionForFeesExpensesTaxes	<span style="color:#000000;font-family:Arial;font-size:8pt;">Reflects no deduction for fees, expenses or taxes. Adjusted to reflect the reinvestment of dividends paid by issuers in the Index.</span>
Performance Table Uses Highest Federal Rate	rr_PerformanceTableUsesHighestFederalRate	<span style="color:#000000;font-family:Arial;font-size:10pt;"> After-tax returns are calculated using the </span><span style="color:#000000;font-family:Arial;font-size:10pt;">historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes.</span>
Performance Table Not Relevant to Tax Deferred	rr_PerformanceTableNotRelevantToTaxDeferred	<span style="color:#000000;font-family:Arial;font-size:10pt;"> Actual after-tax</span><span style="color:#000000;font-family:Arial;font-size:10pt;"> returns depend on an investor’s tax situation and may differ from those shown. After-tax returns shown are not relevant to investors who hold the Fund’s shares through tax-deferred </span><span style="color:#000000;font-family:Arial;font-size:10pt;margin-left:0%;">arrangements, such as a retirement account. </span>
Performance Table One Class of after Tax Shown [Text]	rr_PerformanceTableOneClassOfAfterTaxShown	<span style="color:#000000;font-family:Arial;font-size:10pt;margin-left:0%;">Average annual total returns are shown on a before- and after-tax </span><span style="color:#000000;font-family:Arial;font-size:10pt;">basis for Investor Class shares only. After-tax returns for Service Class shares will vary.</span>
Performance Table Explanation after Tax Higher	rr_PerformanceTableExplanationAfterTaxHigher	<span style="color:#000000;font-family:Arial;font-size:10pt;">After-tax returns may exceed the return before taxes due to a tax benefit from realizing a capital loss on a sale of shares.</span>
Performance Table Narrative	rr_PerformanceTableNarrativeTextBlock	Average annual total returns are shown on a before- and after-tax basis for Investor Class shares only. After-tax returns for Service Class shares will vary. After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. Actual after-tax returns depend on an investor’s tax situation and may differ from those shown. After-tax returns shown are not relevant to investors who hold the Fund’s shares through tax-deferred arrangements, such as a retirement account. After-tax returns may exceed the return before taxes due to a tax benefit from realizing a capital loss on a sale of shares.
Performance Table Closing [Text Block]	rr_PerformanceTableClosingTextBlock	Annual returns are required to be shown and should not be interpreted as suggesting that the Fund should or should not be held for longer periods of time.
UltraBear ProFund | Risk Nondiversified Status [Member]
Risk Return Abstract	rr_RiskReturnAbstract
Risk [Text Block]	rr_RiskTextBlock	•Non-Diversification Risk — The Fund has the ability to invest a relatively high percentage of its assets in the securities of a small number of issuers or in financial instruments with a single counterparty or a few counterparties. This may increase the Fund’s volatility and increase the risk that the Fund’s performance will decline based on the performance of a single issuer or the credit of a single counterparty.
UltraBear ProFund | Inverse Correlation Risk [Member]
Risk Return Abstract	rr_RiskReturnAbstract
Risk [Text Block]	rr_RiskTextBlock	•Short or Inverse Investing Risk — You will lose money when the Index rises – a result that is the opposite from a traditional index fund. Obtaining inverse or “short” exposure may be considered an aggressive investment technique. The costs of obtaining this short exposure will lower your returns.
UltraBear ProFund | Holding Period Risk [Member]
Risk Return Abstract	rr_RiskReturnAbstract
Risk [Text Block]	rr_RiskTextBlock	•Holding Period Risk — The performance of the Fund for periods longer than a single day will likely differ from the Daily Target. This difference may be significant. If you are considering holding fund shares for longer than a day, it’s important that you understand the impact of Index returns and Index volatility (how much the value of the Index moves up and down from day-to-day) on your holding period return. Index volatility has a negative impact on Fund returns. During periods of higher Index volatility, the Index volatility may affect the Fund’s returns as much as or more than the return of the Index.The following table illustrates the impact of Index volatility and Index return on Fund returns for a hypothetical one-year period. However, these effects will impact your return for any holding period other than a day. The longer you hold shares of the Fund, the more magnified these effects will be. As a result, you should consider monitoring your investments in the Fund in light of your individual investment goals and risk tolerance.In the table areas shaded darker represent those scenarios where the Fund can be expected to return less than the Daily Target. As the table shows, your return will tend to be worse than the Daily Target when there are smaller Index gains or losses and higher Index volatility. Your return will tend to be better than the Daily Target when there are larger Index gains or losses and lower Index volatility. You may lose money when the Index return is flat (i.e., close to zero) and you may lose money when the Index falls.The table uses hypothetical annualized Index volatility and Index returns to illustrate the impact of these two factors on Fund performance over a one-year period. It does not represent actual returns. Each row corresponds to the level of a hypothetical Index return for a one-year period. Each column corresponds to a level of hypothetical annualized Index volatility. For example, the Fund may mistakenly be expected to achieve a -40% return on a yearly basis if the annual Index return were 20%. However, as the table shows, with a one-year Index return of 20% and an annualized Index volatility of 50%, the Fund could be expected to return -67.2%.Assumes: (a) no dividends paid with respect to securities included in the Index; (b) no Fund expenses; and (c) borrowing/lending rates (to obtain inverse leveraged exposure) of zero percent. If these were included the Fund’s performance would be different from that shown.
UltraBear ProFund | Correlation Risk [Member]
Risk Return Abstract	rr_RiskReturnAbstract
Risk [Text Block]	rr_RiskTextBlock	•Correlation Risk — A number of factors may affect the Fund’s ability to achieve a high degree of inverse leveraged correlation with the Index. Fees, expenses, transaction costs, financing costs associated with the use of derivatives, among other factors, will adversely impact the Fund’s ability to meet its Daily Target. In addition, the Fund may not have inverse leveraged exposure to all of the securities in the Index, its weighting of securities may be different from that of the Index, and it may invest in instruments not included in the Index. Moreover, if for any reason the Fund is unable to rebalance all or a portion of its investments, the Fund may have exposure to the Index that is significantly greater or less than the Daily Target. Any of these factors may prevent the Fund from achieving exposure consistent with the Daily Target.
UltraBear ProFund | Derivatives Risk [Member]
Risk Return Abstract	rr_RiskReturnAbstract
Risk [Text Block]	rr_RiskTextBlock	•Risks Associated with the Use of Derivatives — Investing in derivatives to obtain inverse leveraged exposure may be considered aggressive and may expose the Fund to greater risks including counterparty risk and correlation risk. The Fund may lose money if its derivatives do not perform as expected. To the extent to the Fund invests in swaps that use an ETF as the reference asset, the Fund may be subject to greater correlation risk since the performance of an ETF may not track the performance of the Index. Any costs associated with using derivatives will reduce the Fund’s return.
UltraBear ProFund | Counterparty Risk [Member]
Risk Return Abstract	rr_RiskReturnAbstract
Risk [Text Block]	rr_RiskTextBlock	•Counterparty Risk — The Fund may lose money if a counterparty does not meet its contractual obligations. With respect to swap agreements, if the Index has a dramatic intraday move that causes a material decline in the Fund’s net assets, the terms of a swap agreement between the Fund and its counterparty may permit the counterparty to immediately close out the transaction with the Fund. In that event, the Fund may be unable to enter into another swap agreement or invest in other derivatives to achieve its investment objective.
UltraBear ProFund | Equity Risk [Member]
Risk Return Abstract	rr_RiskReturnAbstract
Risk [Text Block]	rr_RiskTextBlock	•Equity and Market Risk — Equity markets are volatile, and the value of equity securities and other instruments correlated with equity markets may fluctuate dramatically from day to day. Equity markets are subject to corporate, political, regulatory, market and economic developments, as well as developments that impact specific economic sectors, industries or segments of the market.
UltraBear ProFund | Money Market Risk [Member]
Risk Return Abstract	rr_RiskReturnAbstract
Risk [Text Block]	rr_RiskTextBlock	•Money Market Instruments Risk — Adverse economic, political or market events affecting issuers of money market instruments, defaults by counterparties or changes in government regulations may have a negative impact on the performance of the Fund.
UltraBear ProFund | Concentration-Focus Risk [Member]
Risk Return Abstract	rr_RiskReturnAbstract
Risk [Text Block]	rr_RiskTextBlock	•Industry Concentration Risk — The Index may have a significant portion of its value in issuers in an industry or group of industries. The Fund will allocate its investments to approximately the same extent as the Index. As a result, the Fund may be subject to greater market fluctuations than a fund that is more broadly invested across industries. As of July 31, 2023, the Index had a significant portion of its value in issuers in the information technology industry group.
UltraBear ProFund | Information Technology Risk [Member]
Risk Return Abstract	rr_RiskReturnAbstract
Risk [Text Block]	rr_RiskTextBlock	○Information Technology Industry Risk — Companies in this industry may experience: intense competition, obsolescence of existing technology, and changing economic conditions and government regulation.
UltraBear ProFund | Index Performance Risk [Member]
Risk Return Abstract	rr_RiskReturnAbstract
Risk [Text Block]	rr_RiskTextBlock	•Index Performance Risk — The Index used by the Fund may underperform other asset classes and may underperform other similar indices. The Index is maintained by a third party provider unaffiliated with the Fund or ProFund Advisors. There can be no guarantee that the methodology underlying the Index or the daily calculation of the Index will be free from error.
UltraBear ProFund | Active Investor Risk [Member]
Risk Return Abstract	rr_RiskReturnAbstract
Risk [Text Block]	rr_RiskTextBlock	•Active Investor Risk —The Fund permits short-term trading of its securities. This may have a negative impact on the Fund’s ability to achieve its investment objective or maintain a consistent level of operating expenses. In certain circumstances, the Fund’s expense ratio may vary from current estimates or the historical ratio disclosed in this Prospectus.
UltraBear ProFund | Early Close Late Close Trading Halt Risk [Member]
Risk Return Abstract	rr_RiskReturnAbstract
Risk [Text Block]	rr_RiskTextBlock	•Early Close/Late Close/Trading Halt Risk — An exchange or market may close early, close late or issue trading halts on specific securities or financial instruments. In these circumstances, the Fund may be unable to rebalance its portfolio, may be unable to accurately price its investments and/or may incur substantial trading losses.
UltraBear ProFund | Investor
Risk Return Abstract	rr_RiskReturnAbstract
Wire Fee	rr_ShareholderFeeOther	$ 10
Investment Advisory Fees	rr_ManagementFeesOverAssets	0.75%
Distribution and Service (12b-1) Fees	rr_DistributionAndService12b1FeesOverAssets	none
Recoupment	rr_Component1OtherExpensesOverAssets	0.02%	[1]
Other Operating Expenses	rr_Component2OtherExpensesOverAssets	1.05%
Other Expenses	rr_OtherExpensesOverAssets	1.07%
Total Annual Fund Operating Expenses Before Fee Waivers and Expense Reimbursements	rr_ExpensesOverAssets	1.82%
Fee Waivers/Reimbursements2	rr_FeeWaiverOrReimbursementOverAssets	(0.04%)
Total Annual Fund Operating Expenses After Fee Waivers and Expense Reimbursements	rr_NetExpensesOverAssets	1.78%
1 Year	rr_ExpenseExampleYear01	$ 181
3 Years	rr_ExpenseExampleYear03	569
5 Years	rr_ExpenseExampleYear05	981
10 Years	rr_ExpenseExampleYear10	$ 2,134
2013	rr_AnnualReturn2011	(45.95%)
2014	rr_AnnualReturn2012	(26.52%)
2015	rr_AnnualReturn2013	(10.02%)
2016	rr_AnnualReturn2014	(24.78%)
2017	rr_AnnualReturn2015	(32.58%)
2018	rr_AnnualReturn2016	4.20%
2019	rr_AnnualReturn2017	(42.03%)
2020	rr_AnnualReturn2018	(51.10%)
2021	rr_AnnualReturn2019	(43.61%)
2022	rr_AnnualReturn2020	29.74%
Year to Date Return, Label	rr_YearToDateReturnLabel	<span style="color:#000000;font-family:Arial;font-size:10pt;margin-left:0.0pt;">Year-to-Date</span>
Bar Chart, Year to Date Return, Date	rr_BarChartYearToDateReturnDate	Sep. 30, 2023
Bar Chart, Year to Date Return	rr_BarChartYearToDateReturn	(16.98%)
Highest Quarterly Return, Label	rr_HighestQuarterlyReturnLabel	<span style="color:#000000;font-family:Arial;font-size:10pt;margin-left:0.0pt;">Best Quarter</span>
Highest Quarterly Return, Date	rr_BarChartHighestQuarterlyReturnDate	Jun. 30, 2022
Highest Quarterly Return	rr_BarChartHighestQuarterlyReturn	34.03%
Lowest Quarterly Return, Label	rr_LowestQuarterlyReturnLabel	<span style="color:#000000;font-family:Arial;font-size:10pt;margin-left:0.0pt;">Worst Quarter</span>
Lowest Quarterly Return, Date	rr_BarChartLowestQuarterlyReturnDate	Jun. 30, 2020
Lowest Quarterly Return	rr_BarChartLowestQuarterlyReturn	(36.58%)
OneYear	rr_AverageAnnualReturnYear01	29.74%
FiveYears	rr_AverageAnnualReturnYear05	(26.39%)
TenYears	rr_AverageAnnualReturnYear10	(27.68%)
InceptionDate	rr_AverageAnnualReturnInceptionDate	Dec. 22, 1997
UltraBear ProFund | Service
Risk Return Abstract	rr_RiskReturnAbstract
Wire Fee	rr_ShareholderFeeOther	$ 10
Investment Advisory Fees	rr_ManagementFeesOverAssets	0.75%
Distribution and Service (12b-1) Fees	rr_DistributionAndService12b1FeesOverAssets	1.00%
Recoupment	rr_Component1OtherExpensesOverAssets	0.02%	[1]
Other Operating Expenses	rr_Component2OtherExpensesOverAssets	1.05%
Other Expenses	rr_OtherExpensesOverAssets	1.07%
Total Annual Fund Operating Expenses Before Fee Waivers and Expense Reimbursements	rr_ExpensesOverAssets	2.82%
Fee Waivers/Reimbursements2	rr_FeeWaiverOrReimbursementOverAssets	(0.04%)
Total Annual Fund Operating Expenses After Fee Waivers and Expense Reimbursements	rr_NetExpensesOverAssets	2.78%
1 Year	rr_ExpenseExampleYear01	$ 281
3 Years	rr_ExpenseExampleYear03	870
5 Years	rr_ExpenseExampleYear05	1,485
10 Years	rr_ExpenseExampleYear10	$ 3,144
OneYear	rr_AverageAnnualReturnYear01	28.85%
FiveYears	rr_AverageAnnualReturnYear05	(27.09%)
TenYears	rr_AverageAnnualReturnYear10	(28.37%)
InceptionDate	rr_AverageAnnualReturnInceptionDate	Dec. 22, 1997
UltraBear ProFund | After Taxes on Distributions | Investor
Risk Return Abstract	rr_RiskReturnAbstract
OneYear	rr_AverageAnnualReturnYear01	29.74%
FiveYears	rr_AverageAnnualReturnYear05	(26.42%)
TenYears	rr_AverageAnnualReturnYear10	(27.69%)
UltraBear ProFund | After Taxes on Distributions and Sales of Shares | Investor
Risk Return Abstract	rr_RiskReturnAbstract
OneYear	rr_AverageAnnualReturnYear01	17.60%
FiveYears	rr_AverageAnnualReturnYear05	(16.64%)
TenYears	rr_AverageAnnualReturnYear10	(12.34%)
UltraBear ProFund | S&P Banks Select Industry Index
Risk Return Abstract	rr_RiskReturnAbstract
OneYear	rr_AverageAnnualReturnYear01	(18.11%)	[2]
FiveYears	rr_AverageAnnualReturnYear05	9.42%	[2]
TenYears	rr_AverageAnnualReturnYear10	12.56%	[2]

[1] The “Recoupment” line shows gross recoupment payments made by the Fund during its most recent fiscal year. In addition, at times during the fiscal year amounts were waived or reimbursed to the Fund - the gross amount of this waiver/reimbursement is shown separately in the “Fee Waivers/Reimbursements” line. The recoupment shown did not cause the Fund’s expenses to exceed any expense limitation in place at the time of recoupment or the time the recouped amounts were originally waived/reimbursed.

[2] Reflects no deduction for fees, expenses or taxes. Adjusted to reflect the reinvestment of dividends paid by issuers in the Index.