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Risk/Return: rr_RiskReturnAbstract  
Registrant Name dei_EntityRegistrantName JPMorgan Trust I
Prospectus Date rr_ProspectusDate Apr. 28, 2015
R5, R6 Shares | JPMorgan Hedged Equity Fund  
Risk/Return: rr_RiskReturnAbstract  
Risk/Return [Heading] rr_RiskReturnHeading JPMorgan Hedged Equity Fund

Class/Ticker: R5/JHQPX; R6/JHQRX
Objective [Heading] rr_ObjectiveHeading What is the goal of the Fund?
Objective, Primary [Text Block] rr_ObjectivePrimaryTextBlock The Fund seeks to provide capital appreciation.
Expense [Heading] rr_ExpenseHeading Fees and Expenses of the Fund
Expense Narrative [Text Block] rr_ExpenseNarrativeTextBlock The following table describes the fees and expenses that you may pay if you buy and hold shares of the Fund.
Operating Expenses Caption [Text] rr_OperatingExpensesCaption ANNUAL FUND OPERATING EXPENSES
(Expenses that you pay each year as a percentage of the value
of your investment)
Fee Waiver or Reimbursement over Assets, Date of Termination rr_FeeWaiverOrReimbursementOverAssetsDateOfTermination 10/31/15
Portfolio Turnover [Heading] rr_PortfolioTurnoverHeading Portfolio Turnover
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 period, the Fund’s portfolios turnover rate was 36% of the average value of its portfolio.
Portfolio Turnover, Rate rr_PortfolioTurnoverRate 36.00%rr_PortfolioTurnoverRate
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Expense Example [Heading] rr_ExpenseExampleHeading Example
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 10/31/15 and total annual fund operating expenses thereafter. Your actual costs may be higher or lower.
Expense Example by, Year, Caption [Text] rr_ExpenseExampleByYearCaption WHETHER OR NOT YOU SELL YOUR SHARES, YOUR
COST WOULD BE:
Expense Example, No Redemption, By Year, Caption [Text] rr_ExpenseExampleNoRedemptionByYearCaption WHETHER OR NOT YOU SELL YOUR SHARES, YOUR
COST WOULD BE:
Strategy [Heading] rr_StrategyHeading What are the Fund’s main investment strategies?
Strategy Narrative [Text Block] rr_StrategyNarrativeTextBlock The Fund seeks to provide capital appreciation through participation in the broad equity markets while hedging overall market exposure relative to traditional long-only equity strategies.

Under normal circumstances, the Fund invests at least 80% of its Assets in equity securities. “Assets” means net assets plus the amount of borrowings for investment purposes. The Fund uses an enhanced index strategy to invest in these equity securities, which primarily consist of common stocks of large capitalization U.S. companies. Because the Fund uses an enhanced index strategy, not all of the stocks in the S&P 500 Index, its primary benchmark, are included in the Fund, and the Fund’s position in an individual stock may be overweighted or underweighted when compared to the index. The Fund will also systematically purchase and sell exchange traded put options and sell exchange traded call options, employing an option overlay known as a “Put/Spread Collar” strategy. The options may be based on the S&P 500 Index or on exchange-traded funds (ETFs) that replicate the S&P 500 Index (S&P 500 ETFs). The combination of the diversified portfolio of equity securities, the downside protection from index put options and the income from the index call options is intended to provide the Fund with a portion of the returns associated with equity market investments while exposing investors to less risk than traditional long-only equity strategies. Specifically, the Fund seeks to provide a competitive risk adjusted return over a full market cycle (defined as three to five years) relative to the S&P 500 Index with lower volatility than traditional long-only equity strategies.

The Fund’s investments in equity securities will be primarily in common stocks of U.S. companies with market capitalizations similar to those within the universe of the S&P 500 Index. As of the last reconstitution of the S&P 500 Index on September 30, 2014, the market capitalization of the companies in the index ranged from $3.8 billion to $603 billion. Sector by sector, the Fund’s weightings are similar to those of the S&P 500 Index. Within each sector, however, the Fund modestly overweights equity securities that it considers undervalued or fairly valued while modestly underweighting or not holding equity securities that appear overvalued. Because each stock’s weighting in the Fund is controlled relative to that stock’s weight in the S&P 500 Index, the Fund’s weighted average market capitalization will be close to that of the S&P 500 Index.

The Fund constructs a Put/Spread Collar by buying a put option on the S&P 500 Index at a higher strike price and writing (or selling) a put option on the same index at a relatively lower strike price, which is known as a put option spread, while simultaneously selling a S&P 500 Index call option. The Fund may need to construct additional Put/Spread Collars if the size of the Fund increases, either through purchases or appreciation. The Fund’s options overlay strategy is intended to provide the Fund with downside protection, while foregoing some upside potential. A put option spread seeks to protect the Fund against a decline in price, but only to the extent of the difference between the strike prices of the put option purchased and the put option sold. Entering into put option spreads is typically less expensive than a strategy of only purchasing put options and may benefit the Fund in a flat to upwardly moving market by reducing the cost of the downside protection; the downside protection, however, is limited as compared to just owning a put option. Writing index call options is intended to provide income which substantially offsets the cost of the put option spread, but it also reduces the Fund’s ability to profit from increases in the value of its equity portfolio. While the Fund typically constructs the Put/Spread Collar utilizing index options, it may also construct the Put/Spread Collar utilizing options on S&P 500 ETFs.

In addition to the use of the Put/Spread Collar strategy described above, the Fund may use future contracts, primarily futures on indexes, to more effectively gain targeted equity exposure from its cash positions and to hedge the Fund’s portfolio if it is unable to purchase or write the necessary options for its overlay strategy.

Investment Process — Enhanced Index: To implement the enhanced index strategy, the adviser employs a three-step process that combines research, valuation and stock selection. The adviser takes an in-depth look at company prospects over a period as long as five years, which is designed to provide insight into a company’s real growth potential. The research findings allow the adviser to rank the companies in each sector group according to their relative value.

On behalf of the Fund, the adviser then buys and sells equity securities, using the research and valuation rankings as a basis. In general, the adviser buys equity securities that are identified as attractive and considers selling them when they appear less attractive based on the Fund’s process. Along with attractive valuation, the adviser 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
  • high perceived potential reward compared to perceived potential risk
  • possible temporary mispricings caused by apparent market overreactions.
Investment Process — Options Overlay Strategy: To implement the Put/Spread Collar strategy, the adviser utilizes exchange traded equity options based either on the S&P 500 Index or on S&P 500 ETFs. The Put/Spread Collar is constructed by buying a put option at a higher strike price while writing a put option at a relatively lower strike price and simultaneously selling a call option that substantially offsets the cost of the put option spread. The options are systematically reset on at least a quarterly basis to better capitalize on current market conditions and opportunities while seeking to provide predictable returns in all market cycles.
Risk [Heading] rr_RiskHeading The Fund’s Main Investment Risks
Risk Narrative [Text Block] rr_RiskNarrativeTextBlock The Fund is subject to management risk and may not achieve its objective if the adviser’s expectations regarding particular securities or markets are not met.

An investment in this Fund or any other fund may not provide a complete investment program. The suitability of an investment in the Fund should be considered based on the investment objective, strategies and risks described in this Prospectus, considered in light of all of the other investments in your portfolio, as well as your risk tolerance, financial goals and time horizons. You may want to consult with a financial advisor to determine if this Fund is suitable for you.


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 securities goes down, your investment in the Fund decreases in value.

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.

Strategy Risk. The Fund’s combination of a diversified equity portfolio, with the Put/Spread Collar options overlay strategy is designed to provide greater market protection than other equity investments, but may not always do so, particularly in rising equity markets when the Fund is expected to underperform traditional equity strategies. In addition, as a result of the structure of the options overlay strategy, the Fund is not expected to provide market protection during times of low market volatility; during such periods, the Fund is expected to perform in line with broad equity markets.

Options Risk. Options can be used to acquire or transfer the risk and returns of a security or other asset without buying or selling the security or asset. The value of the Fund’s positions in equity index options or options on S&P 500 ETFs will fluctuate in response to changes in the value of the underlying index. Writing index call options or options on S&P 500 ETFs can reduce equity market risk, but it limits the opportunity to profit from an increase in the market value of stocks in exchange for upfront cash at the time of selling the call option. The Fund also risks losing all or part of the cash paid for purchasing put options. Unusual market conditions or the lack of a ready market for any particular option at a specific time may reduce the effectiveness of the Fund’s option strategies, and for these and other reasons, the Fund’s option strategies may not reduce the Fund’s volatility to the extent desired and could result in losses.

Mid Cap Company Risk. Investments in mid cap companies may be riskier, more volatile and more vulnerable to economic, market and industry changes than investments in larger, more established companies. As a result, share price changes may be more sudden or erratic than the prices of other equity securities, especially over the short term.

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. 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.

High Portfolio Turnover Risk. The Fund may engage in active and frequent trading leading to increased portfolio turnover, higher transaction costs, and the possibility or increased capital gains, including short-term capital gains that will generally be taxable to shareholders as ordinary income.

Volcker Rule Risk. As of the commencement of the Fund’s operations, the adviser and/or its affiliates owned 25% or more of the Fund’s outstanding ownership interests. Pursuant to section 619 of the Dodd-Frank Wall Street Reform and Consumer Protection Act and certain rules promulgated thereunder known as the Volcker Rule, if the adviser and/or its affiliates own 25% or more of the outstanding ownership interests of the Fund after one year from the implementation of the Fund’s investment strategy (or such longer period as may be permitted by the Federal Reserve), the Fund could be subject to restrictions on trading that would adversely impact the Fund’s ability to execute its investment strategy. As a result, the adviser and/or its affiliates may be required to reduce their ownership interests in the Fund at a time that is sooner than would otherwise be desirable, which may result in the Fund’s liquidation or, if the Fund is able to continue operating, may result in losses, increased transaction costs and adverse tax consequences as a result of the sale of portfolio securities.

Redemption Risk. The Fund could experience a loss when selling securities to meet redemption requests by shareholders. 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.

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 anyother government agency.

You could lose money investing in the Fund.

Risk Lose Money [Text] rr_RiskLoseMoney You could lose money investing in the Fund.
Risk Not Insured Depository Institution [Text] rr_RiskNotInsuredDepositoryInstitution 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 anyother government agency.
Bar Chart and Performance Table [Heading] rr_BarChartAndPerformanceTableHeading The Fund’s Past Performance
Performance Narrative [Text Block] rr_PerformanceNarrativeTextBlock The Fund commenced operations on December 13, 2013 and, therefore, has limited reportable performance history. Once the Fund has operated for at least one calendar year, a bar chart and performance table will be included in the prospectus to show the performance of the Fund. When such information is included, this section will provide some indication of the risks of investing in the Fund by showing changes in the Fund’s performance history from year to year and showing how the Fund’s average annual total returns compare with those of a broad measure of market performance. Although past performance of a Fund is no guarantee of how it will perform in the future, historical performance may give you some indication of the risks of investing in the Fund.
Performance Information Illustrates Variability of Returns [Text] rr_PerformanceInformationIllustratesVariabilityOfReturns Once the Fund has operated for at least one calendar year, a bar chart and performance table will be included in the prospectus to show the performance of the Fund. When such information is included, this section will provide some indication of the risks of investing in the Fund by showing changes in the Fund’s performance history from year to year and showing how the Fund’s average annual total returns compare with those of a broad measure of market performance.
Performance One Year or Less [Text] rr_PerformanceOneYearOrLess The Fund commenced operations on December 13, 2013 and, therefore, has limited reportable performance history. Once the Fund has operated for at least one calendar year, a bar chart and performance table will be included in the prospectus to show the performance of the Fund.
Performance Past Does Not Indicate Future [Text] rr_PerformancePastDoesNotIndicateFuture Although past performance of a Fund is no guarantee of how it will perform in the future, historical performance may give you some indication of the risks of investing in the Fund.
R5, R6 Shares | JPMorgan Hedged Equity Fund | Class R5  
Risk/Return: rr_RiskReturnAbstract  
Management Fees rr_ManagementFeesOverAssets 0.25%rr_ManagementFeesOverAssets
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Distribution (Rule 12b-1) Fees rr_DistributionAndService12b1FeesOverAssets none
Shareholder Service Fees rr_Component1OtherExpensesOverAssets 0.05%rr_Component1OtherExpensesOverAssets
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Remainder of Other Expenses rr_Component2OtherExpensesOverAssets 8.80%rr_Component2OtherExpensesOverAssets
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Other Expenses rr_OtherExpensesOverAssets 8.85%rr_OtherExpensesOverAssets
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Total Annual Fund Operating Expenses rr_ExpensesOverAssets 9.10%rr_ExpensesOverAssets
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Fee Waivers and Expense Reimbursements rr_FeeWaiverOrReimbursementOverAssets (8.70%)rr_FeeWaiverOrReimbursementOverAssets
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Total Annual Fund Operating Expenses After Fee Waivers and Expense Reimbursements rr_NetExpensesOverAssets 0.40%rr_NetExpensesOverAssets
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R5, R6 Shares | JPMorgan Hedged Equity Fund | Class R6  
Risk/Return: rr_RiskReturnAbstract  
Management Fees rr_ManagementFeesOverAssets 0.25%rr_ManagementFeesOverAssets
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Distribution (Rule 12b-1) Fees rr_DistributionAndService12b1FeesOverAssets none
Shareholder Service Fees rr_Component1OtherExpensesOverAssets none
Remainder of Other Expenses rr_Component2OtherExpensesOverAssets 8.80%rr_Component2OtherExpensesOverAssets
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Other Expenses rr_OtherExpensesOverAssets 8.80%rr_OtherExpensesOverAssets
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Total Annual Fund Operating Expenses rr_ExpensesOverAssets 9.05%rr_ExpensesOverAssets
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Fee Waivers and Expense Reimbursements rr_FeeWaiverOrReimbursementOverAssets (8.70%)rr_FeeWaiverOrReimbursementOverAssets
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Total Annual Fund Operating Expenses After Fee Waivers and Expense Reimbursements rr_NetExpensesOverAssets 0.35%rr_NetExpensesOverAssets
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[1] The Fund's adviser, administrator and distributor (the Service Providers) have contractually agreed to waive fees and/or reimburse expenses to the extent Total Annual Fund Operating Expenses of Class R5 and Class R6 Shares (excluding acquired fund fees and expenses, dividend expenses related to short sales, interest, taxes, expenses related to litigation and potential litigation, extraordinary expenses and expenses related to the Board of Trustees' deferred compensation plan) exceeds 0.40% and 0.35%, respectively, of their average daily net assets. This contract cannot be terminated prior to 11/1/15 at which time the Service Providers will determine whether or not to renew or revise it.