| Label | Element | Value | ||||
|---|---|---|---|---|---|---|
| Risk Return Abstract | rr_RiskReturnAbstract | |||||
| Registrant Name | dei_EntityRegistrantName | JPMORGAN TRUST I | ||||
| Prospectus Date | rr_ProspectusDate | Mar. 01, 2025 | ||||
| A C I Shares | JPMorgan Research Market Neutral Fund | ||||||
| Risk Return Abstract | rr_RiskReturnAbstract | |||||
| Risk/Return [Heading] | rr_RiskReturnHeading | <span style="color:#000000;font-family:Arial Narrow;font-size:11pt;font-weight:bold;">Class/Ticker: A/JMNAX; C/JMNCX; I/JMNSX</span> | ||||
| Objective [Heading] | rr_ObjectiveHeading | <span style="color:#000000;font-family:Arial Narrow;font-size:11pt;font-weight:bold;">What is the goal of the Fund?</span> | ||||
| Objective, Primary [Text Block] | rr_ObjectivePrimaryTextBlock | The Fund seeks to provide long-term capital appreciation from a broadly diversified portfolio of U.S. stocks while neutralizing the general risks associated with stock market investing. | ||||
| Expense [Heading] | rr_ExpenseHeading | <span style="color:#000000;font-family:Arial Narrow;font-size:11pt;font-weight:bold;">Fees and Expenses of the Fund</span> | ||||
| Expense Narrative [Text Block] | rr_ExpenseNarrativeTextBlock | The following tables describe 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 table and examples below. You may qualify for sales charge discounts on purchases of Class A Shares if you and your family invest, or agree to invest in the future, at least $50,000 in J.P. Morgan Funds.More information about these and other discounts is available from your financial intermediary and in “Investing with J.P. Morgan Funds — SALES CHARGES AND FINANCIAL INTERMEDIARY COMPENSATION” on page 20 and in “Financial Intermediary-Specific Sales Charge Waivers” in Appendix A of the prospectus and in “PURCHASES, REDEMPTIONS AND EXCHANGES” in Appendix A to Part II of the Statement of Additional Information. | ||||
| Shareholder Fees Caption [Text] | rr_ShareholderFeesCaption | <span style="color:#FFFFFF;font-family:Arial Narrow;font-size:11pt;font-weight:bold;margin-left:0.0pt;">SHAREHOLDER FEES </span><span style="color:#FFFFFF;font-family:Arial Narrow;font-size:8pt;font-weight:bold;margin-left:0.0pt;">(Fees paid directly from your investment)</span> | ||||
| Operating Expenses Caption [Text] | rr_OperatingExpensesCaption | <span style="color:#FFFFFF;font-family:Arial Narrow;font-size:11pt;font-weight:bold;margin-left:0.0pt;">ANNUAL FUND OPERATING EXPENSES</span><span style="color:#FFFFFF;font-family:Arial Narrow;font-size:8pt;font-weight:bold;margin-left:0.0pt;">(Expenses that you pay each year as a percentage of the value</span><span style="color:#FFFFFF;font-family:Arial Narrow;font-size:8pt;font-weight:bold;margin-left:0.0pt;">of your investment)</span> | ||||
| Fee Waiver or Reimbursement over Assets, Date of Termination | rr_FeeWaiverOrReimbursementOverAssetsDateOfTermination | <span style="font-family:Arial Narrow;font-size:8pt;">2/28/26</span> | ||||
| Portfolio Turnover [Heading] | rr_PortfolioTurnoverHeading | <span style="color:#000000;font-family:Arial Narrow;font-size:11pt;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 Fund shares are held in a taxable account. These costs, which are not reflected in annual fund operating expenses or in the Example, affect the Fund’s performance. During the Fund’s most recent fiscal year, the Fund’s portfolio turnover rate (including short sales) was 218% of the average value of its portfolio. | ||||
| Portfolio Turnover, Rate | rr_PortfolioTurnoverRate | 218.00% | ||||
| Expense Footnotes [Text Block] | rr_ExpenseFootnotesTextBlock | “Acquired Fund (Underlying Fund) Fees and Expenses” are expenses incurred indirectly by the Fund through its ownership of shares in other investment companies, including affiliated money market funds, other mutual funds, exchange-traded funds and business development companies. The impact of Acquired Fund (Underlying Fund) Fees and Expenses is included in the total returns of the Fund. Acquired Fund (Underlying Fund) Fees and Expenses are not direct costs of the Fund, are not used by the Fund to calculate its net asset value per share and are not included in the calculation of the ratio of expenses to average net assets shown in the Financial Highlights section of the Fund’s prospectus. | ||||
| Expense Breakpoint Discounts [Text] | rr_ExpenseBreakpointDiscounts | <span style="color:#000000;font-family:Arial Narrow;font-size:10pt;">You may </span><span style="color:#000000;font-family:Arial Narrow;font-size:10pt;">pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in the table and examples below. You may qualify for sales charge discounts on purchases of Class A Shares if you and your family invest, or agree to invest in the future, at least </span><span style="color:#000000;font-family:Arial Narrow;font-size:10pt;">$50,000</span><span style="color:#000000;font-family:Arial Narrow;font-size:10pt;"> in J.P. Morgan Funds.</span> | ||||
| Expense Breakpoint, Minimum Investment Required [Amount] | rr_ExpenseBreakpointMinimumInvestmentRequiredAmount | $ 50,000 | ||||
| Expenses Not Correlated to Ratio Due to Acquired Fund Fees [Text] | rr_ExpensesNotCorrelatedToRatioDueToAcquiredFundFees | <span style="color:#000000;font-family:Arial Narrow;font-size:10pt;">Acquired Fund (Underlying </span><span style="color:#000000;font-family:Arial Narrow;font-size:10pt;">Fund) Fees and Expenses are not direct costs of the Fund, are not used by the Fund to calculate its net asset value per share </span><span style="color:#000000;font-family:Arial Narrow;font-size:10pt;">and are not included in the calculation of the ratio of expenses to average net assets shown in the Financial Highlights section of the Fund’s prospectus.</span> | ||||
| Expense Example [Heading] | rr_ExpenseExampleHeading | <span style="color:#000000;font-family:Arial Narrow;font-size:11pt;font-weight:bold;">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 mutual funds. The Example assumes that you invest $10,000 in the Fund for the time periods indicated. The Example also assumes that your investment has a 5% return each year and that the Fund’s operating expenses are equal to the total annual fund operating expenses after fee waivers and expense reimbursements shown in the fee table through 2/28/26, and total annual fund operating expenses thereafter. Your actual costs may be higher or lower. | ||||
| Expense Example by, Year, Caption [Text] | rr_ExpenseExampleByYearCaption | <span style="color:#FFFFFF;font-family:Arial Narrow;font-size:11pt;font-weight:bold;margin-left:0.0pt;">IF YOU SELL YOUR SHARES, YOUR COST WOULD BE:</span> | ||||
| Expense Example, No Redemption, By Year, Caption [Text] | rr_ExpenseExampleNoRedemptionByYearCaption | <span style="color:#FFFFFF;font-family:Arial Narrow;font-size:11pt;font-weight:bold;margin-left:0.0pt;">IF YOU DO NOT SELL YOUR SHARES, YOUR COST</span><span style="color:#FFFFFF;font-family:Arial Narrow;font-size:11pt;font-weight:bold;margin-left:0.0pt;">WOULD BE:</span> | ||||
| Strategy [Heading] | rr_StrategyHeading | <span style="color:#000000;font-family:Arial Narrow;font-size:11pt;font-weight:bold;">What are the Fund’s main investment strategies?</span> | ||||
| Strategy Narrative [Text Block] | rr_StrategyNarrativeTextBlock | The Fund takes long and short positions in different securities, selecting from a universe of mid- to large-capitalization stocks with characteristics similar to those of the Russell 1000 and/or Standard & Poor’s 500 (S&P 500) Indexes, in an effort to insulate the Fund’s performance from the effects of general stock market movements. As of December 31, 2024, the market capitalization of the companies in the Russell 1000 Index ranged from $355.11 million to $3.79 trillion. As of December 31, 2024, the market capitalization of the companies in the S&P 500 Index ranged from $6.07 billion to $3.79 trillion. In rising markets, the Fund expects that the long positions will appreciate more rapidly than the short positions, and in declining markets that the short positions will decline faster than the long positions. The Fund expects that this difference in rates of appreciation, along with any returns on cash generated by short sales, will generate a positive return; the Fund pursues returns exceeding those of 90-day U.S. Treasury Bills. The Fund purchases securities that it believes are undervalued and sells short securities that it believes are overvalued. The long and short positions are matched on a variety of risk characteristics in order to limit exposure to macroeconomic factors. In each sector in which the Fund invests, it balances the dollars invested in long and short positions to remain sector neutral. In attempting to neutralize market and sector risks, the Fund emphasizes stock selection as the primary means of generating returns. Derivatives, which are instruments that have a value based on another instrument, exchange rate or index, may be used as substitutes for securities in which the Fund can invest. The Fund will use futures contracts to more effectively gain targeted equity exposure from its cash positions. Investment Process: In managing the Fund, the adviser employs a three-step process that combines research, valuation and stock selection. The research findings allow the adviser to rank the companies according to what it believes to be their relative value. The greater a company’s estimated worth compared to the current market price of its stock, the more undervalued the company. The valuation rankings are produced with the help of a variety of models that quantify the research team’s findings. As part of its investment process, the adviser seeks to assess the impact of environmental, social and governance (ESG) factors on many issuers in the universe in which the Fund may invest. The adviser’s assessment is based on an analysis of key opportunities and risks across industries to seek to identify financially material issues with respect to the Fund’s investments in securities and ascertain key issues that merit engagement with issuers. These assessments may not be conclusive and securities of issuers that may be negatively impacted by such factors may be purchased and retained by the Fund while the Fund may divest or not invest in securities of issuers that may be positively impacted by such factors. The Fund buys and sells securities according to its own policies, using the research and valuation rankings as a basis. In general, the team selects securities that are identified as undervalued and considers selling them when they appear overvalued. Along with attractive valuation, the team often considers a number of other criteria: ●catalysts that could trigger a rise in a stock’s price ●impact on the overall risk of the portfolio relative to the benchmark ●temporary mispricings caused by market overreactions | ||||
| Risk [Heading] | rr_RiskHeading | <span style="color:#000000;font-family:Arial Narrow;font-size:11pt;font-weight:bold;">The Fund’s Main Investment Risks</span> | ||||
| Bar Chart and Performance Table [Heading] | rr_BarChartAndPerformanceTableHeading | <span style="color:#000000;font-family:Arial Narrow;font-size:11pt;font-weight:bold;">The Fund’s Past Performance</span> | ||||
| Performance Narrative [Text Block] | rr_PerformanceNarrativeTextBlock | This section provides some indication of the risks of investing in the Fund. The bar chart shows how performance of the Fund’s Class A Shares has varied from year to year over the past ten calendar years. The table shows the average annual total returns over the past one year, five years and ten years.The table compares the Fund’s performance to the performance of the Bloomberg U.S. Aggregate Index and ICE BofA 3-Month US Treasury Bill Index. The Bloomberg U.S. Aggregate Index serves as the Fund’s regulatory index and provides a broad measure of market performance. The ICE BofA 3-Month US Treasury Bill Index serves as the Fund’s additional index and is more representative of the Fund’s investment universe than the regulatory index. Past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future. Updated performance information is available by visitingwww.jpmorganfunds.com or by calling 1-800-480-4111. The performance figures in the bar chart do not reflect any deduction for the front-end sales charge which is assessed on Class A Shares. If the sales charge were reflected, the performance figures would have been lower.SOURCE ICE DATA INDICES, LLC (“ICE DATA”), IS USED WITH PERMISSION. ICE® IS A REGISTERED TRADEMARK OF ICE DATA OR ITS AFFILIATES AND BOFA® IS A REGISTERED TRADEMARK OF BANK OF AMERICA CORPORATION LICENSED BY BANK OF AMERICA CORPORATION AND ITS AFFILIATES (“BOFA”) AND MAY NOT BE USED WITHOUT BOFA’S PRIOR WRITTEN APPROVAL. ICE DATA, ITS AFFILIATES AND THEIR RESPECTIVE THIRD PARTY SUPPLIERS DISCLAIM ANY AND ALL WARRANTIES AND REPRESENTATIONS, EXPRESS AND/OR IMPLIED, INCLUDING ANY WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE OR USE, INCLUDING THE INDICES, INDEX DATA AND ANY DATA INCLUDED IN, RELATED TO, OR DERIVED THEREFROM. NEITHER ICE DATA, ITS AFFILIATES NOR THEIR RESPECTIVE THIRD PARTY SUPPLIERS SHALL BE SUBJECT TO ANY DAMAGES OR LIABILITY WITH RESPECT TO THE ADEQUACY, ACCURACY, TIMELINESS OR COMPLETENESS OF THE INDICES OR THE INDEX DATA OR ANY COMPONENT THEREOF, AND THE INDICES AND INDEX DATA AND ALL COMPONENTS THEREOF ARE PROVIDED ON AN “AS IS” BASIS AND YOUR USE IS AT YOUR OWN RISK. ICE DATA, ITS AFFILIATES AND THEIR RESPECTIVE THIRD PARTY SUPPLIERS DO NOT SPONSOR, ENDORSE, OR RECOMMEND THE ADVISER, OR ANY OF ITS PRODUCTS OR SERVICES. Source: Bloomberg Index Services Limited. BLOOMBERG® is a trademark and service mark of Bloomberg Finance L.P. and its affiliates (collectively "Bloomberg"). Bloomberg or Bloomberg's licensors own all proprietary rights in the Bloomberg Indices. Bloomberg does not approve or endorse this material, or guarantee the accuracy or completeness of any information herein, or make any warranty, express or implied, as to the results to be obtained therefrom and, to the maximum extent allowed by law, shall have any liability or responsibility for injury or damages arising in connection therewith. | ||||
| Performance Information Illustrates Variability of Returns [Text] | rr_PerformanceInformationIllustratesVariabilityOfReturns | <span style="font-family:Arial Narrow;font-size:10pt;">The bar chart shows how performance of the Fund’s </span><span style="font-family:Arial Narrow;font-size:10pt;">Class A Shares has varied from year to year over the past ten calendar years. The table shows the average annual total returns over the past one year, five years and ten years.</span> | ||||
| Performance Additional Market Index [Text] | rr_PerformanceAdditionalMarketIndex | <span style="font-family:Arial Narrow;font-size:10pt;">The table compares the Fund’s performance to the performance of the Bloomberg U.S. Aggregate Index and ICE BofA 3-Month US Treasury Bill Index. The Bloomberg U.S. Aggregate Index serves as the Fund’s regulatory index and provides a broad measure of market performance. The ICE BofA 3-Month US Treasury Bill Index serves as the Fund’s additional index and is more representative of the Fund’s investment universe than the regulatory index.</span> | ||||
| Performance Availability Phone [Text] | rr_PerformanceAvailabilityPhone | <span style="font-family:Arial Narrow;font-size:10pt;font-style:italic;">1-800-480-4111</span> | ||||
| Performance Availability Website Address [Text] | rr_PerformanceAvailabilityWebSiteAddress | <span style="font-family:Arial Narrow;font-size:10pt;font-style:italic;">www.jpmorganfunds.com</span> | ||||
| Performance Past Does Not Indicate Future [Text] | rr_PerformancePastDoesNotIndicateFuture | <span style="font-family:Arial Narrow;font-size:10pt;"> Past performance (before and after taxes) is </span><span style="font-family:Arial Narrow;font-size:10pt;">not necessarily an indication of how the Fund will perform in the future</span><span style="font-family:Arial Narrow;font-size:10pt;font-style:italic;">.</span> | ||||
| Bar Chart [Heading] | rr_BarChartHeading | <span style="color:#FFFFFF;font-family:Arial Narrow;font-size:10pt;font-weight:bold;margin-left:0.0pt;">YEAR-BY-YEAR RETURNS — CLASS A SHARES</span> | ||||
| Bar Chart Does Not Reflect Sales Loads [Text] | rr_BarChartDoesNotReflectSalesLoads | <span style="color:#000000;font-family:Arial Narrow;font-size:10pt;">The performance figures in the bar chart do not reflect any deduction for the front-end sales charge which is assessed on Class A Shares. If the sales charge were reflected, the performance figures would have been lower.</span> | ||||
| Bar Chart Closing [Text Block] | rr_BarChartClosingTextBlock | Best Quarter1st quarter, 20208.28%Worst Quarter1st quarter, 2016-3.31% | ||||
| Performance Table Heading | rr_PerformanceTableHeading | <span style="color:#FFFFFF;font-family:Arial Narrow;font-size:11pt;font-weight:bold;margin-left:0.0pt;">AVERAGE ANNUAL TOTAL RETURNS</span><span style="color:#FFFFFF;font-family:Arial Narrow;font-size:8pt;font-weight:bold;margin-left:0.0pt;">(For periods ended December 31, 2024)</span> | ||||
| Performance Table Market Index Changed | rr_PerformanceTableMarketIndexChanged | <span style="font-family:Arial Narrow;font-size:8pt;">As a result of new regulatory requirements, the Fund's regulatory index has changed from the Bloomberg U.S. Intermediate Aggregate Index to the Bloomberg U.S. Aggregate Index.</span> | ||||
| Performance Table Uses Highest Federal Rate | rr_PerformanceTableUsesHighestFederalRate | <span style="color:#000000;font-family:Arial Narrow;font-size:10pt;">After-tax </span><span style="color:#000000;font-family:Arial Narrow;font-size:10pt;">returns are calculated using the 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 Narrow;font-size:10pt;">Actual after-tax returns depend on the </span><span style="color:#000000;font-family:Arial Narrow;font-size:10pt;">investor’s tax situation and may differ from those shown, and the after-tax returns shown are not relevant to investors who hold their shares through tax-deferred arrangements such as 401(k) plans or individual retirement accounts.</span> | ||||
| Performance Table One Class of after Tax Shown [Text] | rr_PerformanceTableOneClassOfAfterTaxShown | <span style="color:#000000;font-family:Arial Narrow;font-size:10pt;">After-tax returns are shown for only the Class A Shares and after-tax returns for the other classes will vary. </span> | ||||
| Performance Table Narrative | rr_PerformanceTableNarrativeTextBlock | After-tax returns are shown for only the Class A Shares and after-tax returns for the other classes 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 the investor’s tax situation and may differ from those shown, and the after-tax returns shown are not relevant to investors who hold their shares through tax-deferred arrangements such as 401(k) plans or individual retirement accounts. | ||||
| A C I Shares | JPMorgan Research Market Neutral Fund | Risk Lose Money [Member] | ||||||
| Risk Return Abstract | rr_RiskReturnAbstract | |||||
| Risk [Text Block] | rr_RiskTextBlock | You could lose money investing in the Fund. | ||||
| A C I Shares | JPMorgan Research Market Neutral Fund | Risk Not Insured Depository Institution [Member] | ||||||
| Risk Return Abstract | rr_RiskReturnAbstract | |||||
| Risk [Text Block] | rr_RiskTextBlock | Investments in the Fund are not deposits or obligations of, or guaranteed or endorsed by, any bank and are not insured or guaranteed by the FDIC, the Federal Reserve Board or any other government agency. | ||||
| A C I Shares | JPMorgan Research Market Neutral Fund | Strategy Risk [Member] | ||||||
| Risk Return Abstract | rr_RiskReturnAbstract | |||||
| Risk [Text Block] | rr_RiskTextBlock | Strategy Risk. There is no guarantee that the use of long and short positions will succeed in limiting the Fund’s exposure to domestic stock market movements, capitalization, sector-swings or other risk factors. | ||||
| A C I Shares | JPMorgan Research Market Neutral Fund | Equity Market Risk [Member] | ||||||
| Risk Return Abstract | rr_RiskReturnAbstract | |||||
| Risk [Text Block] | rr_RiskTextBlock | Equity Market Risk. The price of equity securities may rise or fall because of changes in the broad market or changes in a company’s financial condition, sometimes rapidly or unpredictably. These price movements may result from factors affecting individual companies, sectors or industries selected for the Fund’s portfolio or the securities market as a whole, such as changes in economic or political conditions. When the value of the Fund’s portfolio securities goes down, your investment in the Fund decreases in value. | ||||
| A C I Shares | JPMorgan Research Market Neutral Fund | General Market Risk [Member] | ||||||
| Risk Return Abstract | rr_RiskReturnAbstract | |||||
| Risk [Text Block] | rr_RiskTextBlock | General Market Risk. Economies and financial markets throughout the world are becoming increasingly interconnected, which increases the likelihood that events or conditions in one country or region will adversely impact markets or issuers in other countries or regions. Securities in the Fund’s portfolio may underperform in comparison to securities in general financial markets, a particular financial market or other asset classes due to a number of factors, including inflation (or expectations for inflation), deflation (or expectations for deflation), interest rates, global demand for particular products or resources, market instability, financial system instability, debt crises and downgrades, embargoes, tariffs, sanctions and other trade barriers, regulatory events, other governmental trade or market control programs and related geopolitical events. In addition, the value of the Fund’s investments may be negatively affected by the occurrence of global events such as war, terrorism, environmental disasters, natural disasters or events, country instability, and infectious disease epidemics or pandemics. | ||||
| A C I Shares | JPMorgan Research Market Neutral Fund | Short Selling Risk [Member] | ||||||
| Risk Return Abstract | rr_RiskReturnAbstract | |||||
| Risk [Text Block] | rr_RiskTextBlock | Short Positions Risk. The Fund will incur a loss as a result of a short sale if the price of the security sold short increases in value between the date of the short sale and the date on which the Fund purchases the security to replace the borrowed security. In addition, a lender may request, or market conditions may dictate, that securities sold short be returned to the lender on short notice, and the Fund may have to buy the securities sold short at an unfavorable price. If this occurs, any anticipated gain to the Fund may be reduced or eliminated or the short sale may result in a loss. The Fund’s losses are potentially unlimited in a short sale transaction. Short sales are speculative transactions and involve special risks, including greater reliance on the adviser’s ability to accurately anticipate the future value of a security. Furthermore, taking short positions in securities results in a form of leverage which may cause the Fund to be more volatile. | ||||
| A C I Shares | JPMorgan Research Market Neutral Fund | High Portfolio Turnover Risk [Member] | ||||||
| Risk Return Abstract | rr_RiskReturnAbstract | |||||
| Risk [Text Block] | rr_RiskTextBlock | High Portfolio Turnover Risk. The Fund may engage in active and frequent trading leading to increased portfolio turnover, higher transaction costs, and the possibility that the recognition of capital gains will be accelerated, including short-term capital gains that will generally be taxable to shareholders as ordinary income. | ||||
| A C I Shares | JPMorgan Research Market Neutral Fund | Derivatives Risk [Member] | ||||||
| Risk Return Abstract | rr_RiskReturnAbstract | |||||
| Risk [Text Block] | rr_RiskTextBlock | Derivatives Risk. Derivatives, including options and futures, may be riskier than other types of investments and may increase the volatility of the Fund Derivatives may be sensitive to changes in economic and market conditions and may create leverage, which could result in losses that significantly exceed the Fund’s original investment. The Fund may be more volatile than if the Fund had not been leveraged because the leverage tends to exaggerate any effect on the value of the Fund’s portfolio securities. Certain derivatives expose the Fund to counterparty risk, which is the risk that the derivative counterparty will not fulfill its contractual obligations (and includes credit risk associated with the counterparty). Certain derivatives are synthetic instruments that attempt to replicate the performance of certain reference assets. With regard to such derivatives, the Fund does not have a claim on the reference assets and is subject to enhanced counterparty risk. Derivatives may not perform as expected, so the Fund may not realize the intended benefits. When used for hedging, the change in value of a derivative may not correlate as expected with the security or other risk being hedged. In addition, given their complexity, derivatives expose the Fund to risks of mispricing or improper valuation. Derivatives also can expose the Fund to derivative liquidity risk which includes risks involving the liquidity demands that derivatives can create to make payments of margin, collateral, or settlement payments to counterparties, legal risk, which includes the risk of loss resulting from insufficient or unenforceable contractual documentation, insufficient capacity or authority of a Fund’s counterparty and operational risk, which includes documentation or settlement issues, system failures, inadequate controls and human error. | ||||
| A C I Shares | JPMorgan Research Market Neutral Fund | Industry and Sector Focus Risk [Member] | ||||||
| Risk Return Abstract | rr_RiskReturnAbstract | |||||
| Risk [Text Block] | rr_RiskTextBlock | Industry and Sector Focus Risk. At times, the Fund may increase the relative emphasis of its investments in a particular industry or sector. The prices of securities of issuers in a particular industry or sector may be more susceptible to fluctuations due to changes in economic or business conditions, government regulations, availability of basic resources or supplies, contagion risk within a particular industry or sector or to other industries or sectors, or other events that affect that industry or sector more than securities of issuers in other industries and sectors. To the extent that the Fund increases the relative emphasis of its investments in a particular industry or sector, the value of the Fund’s shares may fluctuate in response to events affecting that industry or sector. | ||||
| A C I Shares | JPMorgan Research Market Neutral Fund | Transactions Risk [Member] | ||||||
| Risk Return Abstract | rr_RiskReturnAbstract | |||||
| Risk [Text Block] | rr_RiskTextBlock | Transactions Risk. The Fund could experience a loss and its liquidity may be negatively impacted when selling securities to meet redemption requests. The risk of loss increases if the redemption requests are unusually large or frequent or occur in times of overall market turmoil or declining prices. Similarly, large purchases of Fund shares may adversely affect the Fund’s performance to the extent that the Fund is delayed in investing new cash and is required to maintain a larger cash position than it ordinarily would. | ||||
| A C I Shares | JPMorgan Research Market Neutral Fund | Class A | ||||||
| Risk Return Abstract | rr_RiskReturnAbstract | |||||
| Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price) | rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice | 5.25% | ||||
| Maximum Deferred Sales Charge (as a percentage) | rr_MaximumDeferredSalesChargeOverOther | none | ||||
| Management Fees | rr_ManagementFeesOverAssets | 0.35% | ||||
| Distribution (Rule 12b-1) Fees | rr_DistributionAndService12b1FeesOverAssets | 0.25% | ||||
| Dividend and Interest Expense on Short Sales | rr_Component1OtherExpensesOverAssets | 1.79% | ||||
| Service Fees | rr_Component2OtherExpensesOverAssets | 0.25% | ||||
| Remainder of Other Expenses | rr_Component3OtherExpensesOverAssets | 0.20% | ||||
| Other Expenses | rr_OtherExpensesOverAssets | 2.24% | ||||
| Acquired Fund (Underlying Fund) Fees and Expenses | rr_AcquiredFundFeesAndExpensesOverAssets | 0.03% | ||||
| Total Annual Fund Operating Expenses | rr_ExpensesOverAssets | 2.87% | ||||
| Fee Waivers and/or Expense Reimbursements | rr_FeeWaiverOrReimbursementOverAssets | (0.13%) | [1] | |||
| Total Annual Fund Operating Expenses after Fee Waivers and/or Expense Reimbursements | rr_NetExpensesOverAssets | 2.74% | [1] | |||
| 1 Year | rr_ExpenseExampleYear01 | $ 788 | ||||
| 3 Years | rr_ExpenseExampleYear03 | 1,356 | ||||
| 5 Years | rr_ExpenseExampleYear05 | 1,948 | ||||
| 10 Years | rr_ExpenseExampleYear10 | 3,543 | ||||
| 1 Year | rr_ExpenseExampleNoRedemptionYear01 | 788 | ||||
| 3 Years | rr_ExpenseExampleNoRedemptionYear03 | 1,356 | ||||
| 5 Years | rr_ExpenseExampleNoRedemptionYear05 | 1,948 | ||||
| 10 Years | rr_ExpenseExampleNoRedemptionYear10 | $ 3,543 | ||||
| 2015 | rr_AnnualReturn2015 | (4.05%) | ||||
| 2016 | rr_AnnualReturn2016 | (2.39%) | ||||
| 2017 | rr_AnnualReturn2017 | 5.53% | ||||
| 2018 | rr_AnnualReturn2018 | 2.14% | ||||
| 2019 | rr_AnnualReturn2019 | 1.81% | ||||
| 2020 | rr_AnnualReturn2020 | 12.29% | ||||
| 2021 | rr_AnnualReturn2021 | 3.72% | ||||
| 2022 | rr_AnnualReturn2022 | (2.34%) | ||||
| 2023 | rr_AnnualReturn2023 | 11.02% | ||||
| 2024 | rr_AnnualReturn2024 | 12.21% | ||||
| Highest Quarterly Return, Label | rr_HighestQuarterlyReturnLabel | <span style="font-family:Arial Narrow;font-size:9pt;font-weight:bold;margin-left:0.0pt;">Best Quarter</span> | ||||
| Highest Quarterly Return, Date | rr_BarChartHighestQuarterlyReturnDate | Mar. 31, 2020 | ||||
| Highest Quarterly Return | rr_BarChartHighestQuarterlyReturn | 8.28% | ||||
| Lowest Quarterly Return, Label | rr_LowestQuarterlyReturnLabel | <span style="font-family:Arial Narrow;font-size:9pt;font-weight:bold;margin-left:0.0pt;">Worst Quarter</span> | ||||
| Lowest Quarterly Return, Date | rr_BarChartLowestQuarterlyReturnDate | Mar. 31, 2016 | ||||
| Lowest Quarterly Return | rr_BarChartLowestQuarterlyReturn | (3.31%) | ||||
| Past 1 Year | rr_AverageAnnualReturnYear01 | 6.31% | ||||
| Past 5 Years | rr_AverageAnnualReturnYear05 | 6.06% | ||||
| Past 10 Years | rr_AverageAnnualReturnYear10 | 3.27% | ||||
| A C I Shares | JPMorgan Research Market Neutral Fund | Class C | ||||||
| Risk Return Abstract | rr_RiskReturnAbstract | |||||
| Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price) | rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice | none | ||||
| Maximum Deferred Sales Charge (as a percentage) | rr_MaximumDeferredSalesChargeOverOther | 1.00% | ||||
| Management Fees | rr_ManagementFeesOverAssets | 0.35% | ||||
| Distribution (Rule 12b-1) Fees | rr_DistributionAndService12b1FeesOverAssets | 0.75% | ||||
| Dividend and Interest Expense on Short Sales | rr_Component1OtherExpensesOverAssets | 1.78% | ||||
| Service Fees | rr_Component2OtherExpensesOverAssets | 0.25% | ||||
| Remainder of Other Expenses | rr_Component3OtherExpensesOverAssets | 0.22% | ||||
| Other Expenses | rr_OtherExpensesOverAssets | 2.25% | ||||
| Acquired Fund (Underlying Fund) Fees and Expenses | rr_AcquiredFundFeesAndExpensesOverAssets | 0.03% | ||||
| Total Annual Fund Operating Expenses | rr_ExpensesOverAssets | 3.38% | ||||
| Fee Waivers and/or Expense Reimbursements | rr_FeeWaiverOrReimbursementOverAssets | (0.15%) | [1] | |||
| Total Annual Fund Operating Expenses after Fee Waivers and/or Expense Reimbursements | rr_NetExpensesOverAssets | 3.23% | [1] | |||
| 1 Year | rr_ExpenseExampleYear01 | $ 426 | ||||
| 3 Years | rr_ExpenseExampleYear03 | 1,025 | ||||
| 5 Years | rr_ExpenseExampleYear05 | 1,747 | ||||
| 10 Years | rr_ExpenseExampleYear10 | 3,542 | ||||
| 1 Year | rr_ExpenseExampleNoRedemptionYear01 | 326 | ||||
| 3 Years | rr_ExpenseExampleNoRedemptionYear03 | 1,025 | ||||
| 5 Years | rr_ExpenseExampleNoRedemptionYear05 | 1,747 | ||||
| 10 Years | rr_ExpenseExampleNoRedemptionYear10 | $ 3,542 | ||||
| Past 1 Year | rr_AverageAnnualReturnYear01 | 10.58% | ||||
| Past 5 Years | rr_AverageAnnualReturnYear05 | 6.69% | ||||
| Past 10 Years | rr_AverageAnnualReturnYear10 | 3.41% | ||||
| A C I Shares | JPMorgan Research Market Neutral Fund | Class I | ||||||
| Risk Return Abstract | rr_RiskReturnAbstract | |||||
| Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price) | rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice | none | ||||
| Maximum Deferred Sales Charge (as a percentage) | rr_MaximumDeferredSalesChargeOverOther | none | ||||
| Management Fees | rr_ManagementFeesOverAssets | 0.35% | ||||
| Distribution (Rule 12b-1) Fees | rr_DistributionAndService12b1FeesOverAssets | none | ||||
| Dividend and Interest Expense on Short Sales | rr_Component1OtherExpensesOverAssets | 1.77% | ||||
| Service Fees | rr_Component2OtherExpensesOverAssets | 0.25% | ||||
| Remainder of Other Expenses | rr_Component3OtherExpensesOverAssets | 0.19% | ||||
| Other Expenses | rr_OtherExpensesOverAssets | 2.21% | ||||
| Acquired Fund (Underlying Fund) Fees and Expenses | rr_AcquiredFundFeesAndExpensesOverAssets | 0.03% | ||||
| Total Annual Fund Operating Expenses | rr_ExpensesOverAssets | 2.59% | ||||
| Fee Waivers and/or Expense Reimbursements | rr_FeeWaiverOrReimbursementOverAssets | (0.13%) | [1] | |||
| Total Annual Fund Operating Expenses after Fee Waivers and/or Expense Reimbursements | rr_NetExpensesOverAssets | 2.46% | [1] | |||
| 1 Year | rr_ExpenseExampleYear01 | $ 249 | ||||
| 3 Years | rr_ExpenseExampleYear03 | 793 | ||||
| 5 Years | rr_ExpenseExampleYear05 | 1,364 | ||||
| 10 Years | rr_ExpenseExampleYear10 | 2,915 | ||||
| 1 Year | rr_ExpenseExampleNoRedemptionYear01 | 249 | ||||
| 3 Years | rr_ExpenseExampleNoRedemptionYear03 | 793 | ||||
| 5 Years | rr_ExpenseExampleNoRedemptionYear05 | 1,364 | ||||
| 10 Years | rr_ExpenseExampleNoRedemptionYear10 | $ 2,915 | ||||
| Past 1 Year | rr_AverageAnnualReturnYear01 | 12.39% | ||||
| Past 5 Years | rr_AverageAnnualReturnYear05 | 7.48% | ||||
| Past 10 Years | rr_AverageAnnualReturnYear10 | 4.09% | ||||
| A C I Shares | JPMorgan Research Market Neutral Fund | Return After Taxes on Distributions | Class A | ||||||
| Risk Return Abstract | rr_RiskReturnAbstract | |||||
| Past 1 Year | rr_AverageAnnualReturnYear01 | 4.82% | ||||
| Past 5 Years | rr_AverageAnnualReturnYear05 | 5.19% | ||||
| Past 10 Years | rr_AverageAnnualReturnYear10 | 2.25% | ||||
| A C I Shares | JPMorgan Research Market Neutral Fund | Return After Taxes on Distributions and Sale of Fund Shares | Class A | ||||||
| Risk Return Abstract | rr_RiskReturnAbstract | |||||
| Past 1 Year | rr_AverageAnnualReturnYear01 | 4.27% | ||||
| Past 5 Years | rr_AverageAnnualReturnYear05 | 4.51% | ||||
| Past 10 Years | rr_AverageAnnualReturnYear10 | 2.32% | ||||
| A C I Shares | JPMorgan Research Market Neutral Fund | BLOOMBERG U.S. AGGREGATE INDEX(Reflects No Deduction for Fees, Expenses, or Taxes) | ||||||
| Risk Return Abstract | rr_RiskReturnAbstract | |||||
| Past 1 Year | rr_AverageAnnualReturnYear01 | 1.25% | [2] | |||
| Past 5 Years | rr_AverageAnnualReturnYear05 | (0.33%) | [2] | |||
| Past 10 Years | rr_AverageAnnualReturnYear10 | 1.35% | [2] | |||
| A C I Shares | JPMorgan Research Market Neutral Fund | ICE BOFA 3-MONTH US TREASURY BILL INDEX(Reflects No Deduction for Fees, Expenses, or Taxes) | ||||||
| Risk Return Abstract | rr_RiskReturnAbstract | |||||
| Past 1 Year | rr_AverageAnnualReturnYear01 | 5.25% | ||||
| Past 5 Years | rr_AverageAnnualReturnYear05 | 2.47% | ||||
| Past 10 Years | rr_AverageAnnualReturnYear10 | 1.77% | ||||
| ||||||