Prospectus: Risk/Return: Document Type Document Period End Date Registrant Name Central Index Key Amendment Flag Amendment Description Trading Symbol Document Creation Date Document Effective Date Prospectus Date Document [Axis] Prospectus A, C, Select Shares. Ac Select Shares [Member] A, C, Select Shares Performance Measure [Axis] Before Taxes After Taxes on Distributions and Sales Return After Taxes on Distributions and Sale of Fund Shares After Taxes on Distributions Return After Taxes on Distributions Series [Axis] Series S000011871 [Member] JPMorgan SmartRetirement Income Fund JPMorgan SmartRetirement Income Fund Member Share Class [Axis] Share Classes C000032433 [Member] Class A Class A,JPMorgan SmartRetirement Income Fund Member CLASS A SHARES C000032434 [Member] Class C Class C,JPMorgan SmartRetirement Income Fund Member CLASS C SHARES C000032435 [Member] Select Class Select Class,JPMorgan SmartRetirement Income Fund Member SELECT CLASS SHARES Risk/Return [Heading] Objective [Heading] Objective, Primary [Text Block] Objective, Secondary [Text Block] Expense [Heading] Expense Narrative [Text Block] Shareholder Fees Caption [Text] Shareholder Fees [Table] Operating Expenses Caption [Text] Annual Fund Operating Expenses [Table] Expense Footnotes [Text Block] Expenses Deferred Charges [Text Block] Expenses Range of Exchange Fees [Text Block] Expense Example [Heading] Expense Example by Year [Heading] Expense Example Narrative [Text Block] Expense Example by, Year, Caption [Text] Expense Example, With Redemption [Table] Expense Example, No Redemption Narrative [Text Block] Expense Example, No Redemption, By Year, Caption [Text] Expense Example, No Redemption [Table] Expense Example Footnotes [Text Block] Expense Example Closing [Text Block] Portfolio Turnover [Heading] Portfolio Turnover [Text Block] Strategy [Heading] Strategy Narrative [Text Block] Risk [Heading] Risk Narrative [Text Block] Risk Footnotes [Text Block] Risk Closing [Text Block] Bar Chart and Performance Table [Heading] Performance Narrative [Text Block] Bar Chart Narrative [Text Block] Bar Chart [Heading] Bar Chart [Table] Bar Chart Footnotes [Text Block] Bar Chart Closing [Text Block] Performance Table Heading Performance [Table] Performance Table Narrative Market Index Performance [Table] Performance Table Footnotes Performance Table Closing [Text Block] Shareholder Fees: Maximum Sales Charge (Load) Imposed on Purchases as % of Offering Price Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price) Maximum Deferred Sales Charge (Load) as % of Original Cost of the Shares Maximum Deferred Sales Charge (as a percentage) Shareholder Fees Column [Text] Maximum Cumulative Sales Charge (as a percentage of Offering Price) Maximum Cumulative Sales Charge (as a percentage) Maximum Deferred Sales Charge (as a percentage of Offering Price) Maximum Sales Charge on Reinvested Dividends and Distributions (as a percentage) Redemption Fee (as a percentage of Amount Redeemed) Redemption Fee (as a percentage of Amount Redeemed) Redemption Fee Redemption Fee Exchange Fee (as a percentage of Amount Redeemed) Exchange Fee Maximum Account Fee (as a percentage of Assets) Maximum Account Fee Shareholder Fee, Other Operating Expenses: Management Fees Management Fees (as a percentage of Assets) Distribution (Rule 12b-1) Fees Distribution and Service (12b-1) Fees Other Expenses Other Expenses (as a percentage of Assets): Other Expenses Shareholder Service Fees Component1 Other Expenses Remainder of Other Expenses Component2 Other Expenses Acquired Fund Fees and Expenses (Underlying Fund) Acquired Fund Fees and Expenses Total Annual Fund Operating Expenses Expenses (as a percentage of Assets) Total Annual Fund Operating Expenses Fee Waivers and/or Expense Reimbursements Fee Waiver or Reimbursement Total Annual Fund Operating Expenses After Fee Waivers and Expense Reimbursements Net Expenses (as a percentage of Assets) Total Annual Fund Operating Expenses After Fee Waivers and Expense Reimbursements Operating Expenses Column [Text] Distribution or Similar (Non 12b-1) Fees Component3 Other Expenses Expense Example: 1 Year Expense Example, with Redemption, 1 Year 3 Years Expense Example, with Redemption, 3 Years 5 Years Expense Example, with Redemption, 5 Years 10 Years Expense Example, with Redemption, 10 Years Expense Example, By Year, Column [Text] Column Expense Example, No Redemption: 1 Year Expense Example, No Redemption, 1 Year 3 Years Expense Example, No Redemption, 3 Years 5 Years Expense Example, No Redemption, 5 Years 10 Years Expense Example, No Redemption, 10 Years Expense Example, No Redemption, By Year, Column [Text] Column Bar Chart Table: 2007 Annual Return 2007 2008 Annual Return 2008 2009 Annual Return 2009 2010 Annual Return 2010 2011 Annual Return 2011 Annual Return Caption [Text] Caption Annual Return, Column [Text] Column Annual Return, Inception Date Inception Date Annual Return 1990 Annual Return 1991 Annual Return 1992 Annual Return 1993 Annual Return 1994 Annual Return 1995 Annual Return 1996 Annual Return 1997 Annual Return 1998 Annual Return 1999 Annual Return 2000 Annual Return 2001 Annual Return 2002 Annual Return 2003 Annual Return 2004 Annual Return 2005 Annual Return 2006 Annual Return 2012 Annual Return 2013 Annual Return 2014 Annual Return 2015 Annual Return 2016 Annual Return 2017 Annual Return 2018 Annual Return 2019 Annual Return 2020 S&P TARGET DATE RETIREMENT INCOME INDEX. S and p Tagrget Date Retirement Income Index [Member] S&P TARGET DATE RETIREMENT INCOME INDEX (Reflects No Deduction for Fees, Expenses or Taxes) LIPPER MIXED-ASSET TARGET TODAY FUNDS AVERAGE. Lipper Mixed Asset Target Today Funds Average [Member] LIPPER MIXED-ASSET TARGET TODAY FUNDS AVERAGE (Reflects No Deduction for Taxes) Average Annual Return: Past 1 Year 1 Year Past 5 Years 5 Years Life of Fund Since Inception 10 Years Inception Date Risk/Return Detail [Table] Fee Waiver or Reimbursement over Assets, Date of Termination Portfolio Turnover, Rate Expense Breakpoint Discounts [Text] Expense Breakpoint, Minimum Investment Required [Amount] Expense Exchange Traded Fund Commissions [Text] Expenses Represent Both Master and Feeder [Text] Expenses Explanation of Nonrecurring Account Fee [Text] Other Expenses, New Fund, Based on Estimates [Text] Acquired Fund Fees and Expenses, Based on Estimates [Text] Expenses Other Expenses Had Extraordinary Expenses Been Included [Text] Expenses Restated to Reflect Current [Text] Expenses Not Correlated to Ratio Due to Acquired Fund Fees [Text] Strategy Portfolio Concentration [Text] Risk Lose Money [Text] Risk Nondiversified Status [Text] Risk Money Market Fund [Text] Risk Not Insured Depository Institution [Text] Risk Caption Risk Column [Text] Risk [Text] Performance Information Illustrates Variability of Returns [Text] Performance One Year or Less [Text] Performance Additional Market Index [Text] Performance Availability Phone [Text] Performance Availability Website Address [Text] Performance Past Does Not Indicate Future [Text] Bar Chart Does Not Reflect Sales Loads [Text] Bar Chart, Reason Selected Class Different from Immediately Preceding Period [Text] Bar Chart, Returns for Class Not Offered in Prospectus [Text] Year to Date Return, Label Bar Chart, Year to Date Return, Date Bar Chart, Year to Date Return Highest Quarterly Return, Label Label Highest Quarterly Return, Date Highest Quarterly Return Lowest Quarterly Return, Label Label Lowest Quarterly Return, Date Lowest Quarterly Return Performance Table Does Reflect Sales Loads Performance Table Market Index Changed Index No Deduction for Fees, Expenses, Taxes [Text] Performance Table Uses Highest Federal Rate Performance Table Not Relevant to Tax Deferred Performance Table One Class of after Tax Shown [Text] Performance Table Explanation after Tax Higher Performance Table Footnotes, Reason Performance Information for Class Different from Immediately Preceding Period [Text] Caption Column Label Money Market Seven Day Yield, Caption [Text] Money Market Seven Day Yield Column [Text] Money Market Seven Day Yield Phone Money Market Seven Day Yield Money Market Seven Day Tax Equivalent Yield Thirty Day Yield Caption Thirty Day Yield Column [Text] Thirty Day Yield Phone Thirty Day Yield Thirty Day Tax Equivalent Yield S000011872 [Member] JPMorgan SmartRetirement 2010 Fund JPMorgan SmartRetirement 2010 Fund Member C000032437 [Member] CLASS A SHARES Class A,JPMorgan SmartRetirement 2010 Fund Member Class A C000032438 [Member] CLASS C SHARES Class C,JPMorgan SmartRetirement 2010 Fund Member Class C C000032439 [Member] SELECT CLASS SHARES Select Class,JPMorgan SmartRetirement 2010 Fund Member Select Class S&P TARGET DATE 2010 INDEX. S And P Target Date Twenty Ten Index [Member] S&P TARGET DATE 2010 INDEX (Reflects No Deduction for Fees, Expenses or Taxes) LIPPER MIXED-ASSET TARGET 2010 FUNDS INDEX. Lipper Mixed Asset Target Twenty Ten Funds Index [Member] LIPPER MIXED-ASSET TARGET 2010 FUNDS INDEX (Reflects No Deduction for Taxes) S000011873 [Member] JPMorgan SmartRetirement 2015 Fund JPMorgan SmartRetirement 2015 Fund Member C000032444 [Member] Class A Class A,JPMorgan SmartRetirement 2015 Fund Member CLASS A SHARES C000032441 [Member] Class C Class C,JPMorgan SmartRetirement 2015 Fund Member CLASS C SHARES C000032442 [Member] Select Class Select Class,JPMorgan SmartRetirement 2015 Fund Member SELECT CLASS SHARES S&P TARGET DATE 2015 INDEX (Reflects No Deduction for Fees, Expenses or Taxes). Sandp Target Date Two Thousand Fifteen Index [Member] S&P TARGET DATE 2015 INDEX (Reflects No Deduction for Fees, Expenses or Taxes) LIPPER MIXED-ASSET TARGET 2015 FUNDS INDEX (Reflects No Deduction for Taxes). Lipper Mixed Asset Target Two Thousand Fifteen Fund [Member] LIPPER MIXED-ASSET TARGET 2015 FUNDS INDEX (Reflects No Deduction for Taxes) S000011874 [Member] JPMorgan SmartRetirement 2020 Fund JPMorgan SmartRetirement 2020 Fund Member C000032445 [Member] Class A Class A,JPMorgan SmartRetirement 2020 Fund Member CLASS A SHARES C000032446 [Member] Class C Class C,JPMorgan SmartRetirement 2020 Fund Member CLASS C SHARES C000032447 [Member] Select Class Select Class,JPMorgan SmartRetirement 2020 Fund Member SELECT CLASS SHARES S&P TARGET DATE 2020 INDEX (Reflects No Deduction for Fees,Expenses or Taxes). S And P Target Date Two Thousand And Twenty Index [Member] S&P TARGET DATE 2020 INDEX (Reflects No Deduction for Fees, Expenses or Taxes) LIPPER MIXED-ASSET TARGET 2020 FUNDS INDEX (Reflects No Deduction for Taxes). Lipper Mixed Assets Target Two Thousand And Twenty Funds Index [Member] LIPPER MIXED-ASSET TARGET 2020 FUNDS INDEX (Reflects No Deduction for Taxes) S000018065 [Member] JPMorgan SmartRetirement 2025 Fund JPMorgan SmartRetirement 2025 Fund Member C000050048 [Member] CLASS A SHARES Class A,JPMorgan SmartRetirement 2025 Fund Member Class A C000050049 [Member] CLASS C SHARES Class C,JPMorgan SmartRetirement 2025 Fund Member Class C C000050050 [Member] SELECT CLASS SHARES Select Class,JPMorgan SmartRetirement 2025 Fund Member Select Class S And P Target Date Two Thousand Twenty Five Index. S And P Target Date Two Thousand Twenty Five Index [Member] S&P TARGET DATE 2025 INDEX (Reflects No Deduction for Fees, Expenses or Taxes) Lipper Mixed Asset Target Two Thousand Twenty Five Funds Average. Lipper Mixed Asset Target Two Thousand Twenty Five Funds Average [Member] LIPPER MIXED-ASSET TARGET 2025 FUNDS AVERAGE (Reflects No Deduction for Taxes) S000011875 [Member] JPMorgan SmartRetirement 2030 Fund JPMorgan SmartRetirement 2030 Fund Member C000032449 [Member] Class A Class A,JPMorgan SmartRetirement 2030 Fund Member CLASS A SHARES C000032450 [Member] Class C Class C,JPMorgan SmartRetirement 2030 Fund Member CLASS C SHARES C000032451 [Member] Select Class Select Class,JPMorgan SmartRetirement 2030 Fund Member SELECT CLASS SHARES S&P Target Date 2030 Index (Reflects No Deduction for Fees, Expenses or Taxes). S And P Target Date Twenty Thirty Index [Member] S&P TARGET DATE 2030 INDEX (Reflects No Deduction for Fees, Expenses or Taxes) LIPPER MIXED-ASSET TARGET 2030 FUNDS INDEX (Reflects No Deduction for Taxes). Lipper Mixed Asset Target Twenty Thirty Funds Index [Member] LIPPER MIXED-ASSET TARGET 2030 FUNDS INDEX (Reflects No Deduction for Taxes) S000018066 [Member] JPMorgan SmartRetirement 2035 Fund JPMorgan SmartRetirement 2035 Fund Member C000050052 [Member] CLASS A SHARES Class A,JPMorgan SmartRetirement 2035 Fund Member Class A C000050053 [Member] CLASS C SHARES Class C,JPMorgan SmartRetirement 2035 Fund Member Class C C000050054 [Member] SELECT CLASS SHARES Select Class,JPMorgan SmartRetirement 2035 Fund Member Select Class S&P TARGET DATE 2035 INDEX (Reflects No Deduction for Fees, Expenses or Taxes) S And P Target Date Twenty Thirty Five Index [Member] S&P TARGET DATE 2035 INDEX (Reflects No Deduction for Fees, Expenses or Taxes) LIPPER MIXED-ASSET TARGET 2035 FUNDS AVERAGE (Reflects No Deduction for Taxes) Lipper Mixed Asset Target Twenty Thirty Five Funds Average [Member] LIPPER MIXED-ASSET TARGET 2035 FUNDS AVERAGE (Reflects No Deduction for Taxes) S000011876 [Member] JPMorgan SmartRetirement 2040 Fund JPMorgan SmartRetirement 2040 Fund Member C000032453 [Member] Class A Class A,JPMorgan SmartRetirement 2040 Fund Member CLASS A SHARES C000032454 [Member] Class C Class C,JPMorgan SmartRetirement 2040 Fund Member CLASS C SHARES C000032455 [Member] Select Class Select Class,JPMorgan SmartRetirement 2040 Fund Member SELECT CLASS SHARES S&P TARGET DATE 2040 INDEX. Sandp Target Date Twenty Forty Index [Member] S&P TARGET DATE 2040 INDEX (Reflects No Deduction for Fees, Expenses or Taxes) LIPPER MIXED-ASSET TARGET 2040 FUNDS AVERAGE. Lipper Mixed Asset Target Twenty Forty Funds Average [Member] LIPPER MIXED-ASSET TARGET 2040 FUNDS AVERAGE (Reflects No Deduction for Taxes) S000018067 [Member] JPMorgan SmartRetirement 2045 Fund JPMorgan SmartRetirement 2045 Fund Member C000050059 [Member] Class A Class A,JPMorgan SmartRetirement 2045 Fund Member CLASS A SHARES C000050056 [Member] Class C Class C,JPMorgan SmartRetirement 2045 Fund Member CLASS C SHARES C000050057 [Member] Select Class Select Class,JPMorgan SmartRetirement 2045 Fund Member SELECT CLASS SHARES S And P Target Date Two Thousand Forty Five Index. S And P Target Date Two Thousand Forty Five Index [Member] S&P Target Date 2045 Index (Reflects No Deduction for Fees, Expenses or Taxes) S&P TARGET DATE 2045 INDEX (Reflects No Deduction for Fees, Expenses or Taxes) LIPPER MIXED-ASSET TARGET 2045 FUNDS AVERAGE (Reflects No Deduction for Taxes). Lipper Mixed Asset Target Two Thousand Forty Five Funds Average [Member] LIPPER MIXED-ASSET TARGET 2045 FUNDS AVERAGE (Reflects No Deduction for Taxes) S000018068 [Member] JPMorgan SmartRetirement 2050 Fund JPMorgan SmartRetirement 2050 Fund Member C000050060 [Member] Class A Class A,JPMorgan SmartRetirement 2050 Fund Member CLASS A SHARES C000050061 [Member] Class C Class C,JPMorgan SmartRetirement 2050 Fund Member CLASS C SHARES C000050062 [Member] Select Class Select Class,JPMorgan SmartRetirement 2050 Fund Member SELECT CLASS SHARES Lipper Mixed Asset Target Two Thousand Fifty Funds Average Lipper Mixed Asset Target Two Thousand Fifty Funds Average [Member] Lipper Mixed-Asset Target 2050+ Funds Average (Reflects No Deduction for Taxes) LIPPER MIXED-ASSET TARGET 2050+ FUNDS AVERAGE (Reflects No Deduction for Taxes) S000035832 [Member] JPMorgan SmartRetirement 2055 Fund JPMorgan SmartRetirement 2055 Fund Member C000109814 [Member] Class A Class A,JPMorgan SmartRetirement 2055 Fund Member CLASS A SHARES C000109815 [Member] Class C Class C,JPMorgan SmartRetirement 2055 Fund Member CLASS C SHARES C000109816 [Member] Select Class Select Class,JPMorgan SmartRetirement 2055 Fund Member SELECT CLASS SHARES Institutional Shares. Institutional Shares [Member] Institutional Shares C000032436 [Member] Institutional Class Institutional Class,JPMorgan SmartRetirement Income Fund Institutional Class Member INSTITUTIONAL CLASS SHARES C000032440 [Member] Institutional Class Institutional Class,JPMorgan SmartRetirement 2010 Fund Institutional Class Member INSTITUTIONAL CLASS SHARES S&P TARGET DATE 2010 INDEX (Reflects No Deduction for Fees, Expenses or Taxes). S And P Target Date Two Thousand Ten Index [Member] S&P TARGET DATE 2010 INDEX (Reflects No Deduction for Fees, Expenses or Taxes) C000032443 [Member] Institutional Class Institutional Class,JPMorgan SmartRetirement 2015 Fund Institutional Class Member INSTITUTIONAL CLASS SHARES C000032448 [Member] Institutional Class Institutional Class,JPMorgan SmartRetirement 2020 Fund Institutional Class Member INSTITUTIONAL CLASS SHARES S And P Target Date Twenty Twenty Index. S And P Target Date Twenty Twenty Index [Member] S&P TARGET DATE 2020 INDEX (Reflects No Deduction for Fees, Expenses or Taxes) Lipper Mixed Asset Target Twenty Twenty Funds index. Lipper Mixed Asset Target Twenty Twenty Funds index [Member] LIPPER MIXED-ASSET TARGET 2020 FUNDS INDEX (Reflects No Deduction for Taxes) LIPPER MIXED-ASSET TARGET 2020 Funds Index (Reflects No Deduction for Taxes) C000050051 [Member] Institutional Class Institutional Class,JPMorgan SmartRetirement 2025 Fund Institutional Class Member INSTITUTIONAL CLASS SHARES C000032452 [Member] Institutional Class Institutional Class,JPMorgan SmartRetirement 2030 Fund Institutional Class Member INSTITUTIONAL CLASS SHARES C000050055 [Member] Institutional Class Institutional Class,JPMorgan SmartRetirement 2035 Fund Institutional Class Member INSTITUTIONAL CLASS SHARES C000032456 [Member] Institutional Class Institutional Class. INSTITUTIONAL CLASS SHARES C000050058 [Member] Institutional Class Institutional Class,JPMorgan SmartRetirement 2045 Fund Institutional Class Member INSTITUTIONAL CLASS SHARES C000050063 [Member] Institutional Class Institutional Class,JPMorgan SmartRetirement 2050 Fund Institutional Class Member INSTITUTIONAL CLASS SHARES C000109818 [Member] Institutional Class Institutional Class,JPMorgan SmartRetirement 2055 Fund Institutional Class Member INSTITUTIONAL CLASS SHARES R2 Shares. R2 Shares [Member] R2 Shares C000070627 [Member] Class R2 Class R2,JPMorgan SmartRetirement Income Fund Class R2 Member CLASS R2 SHARES S And P Target Date Retirement Income Index. S And P Target Date Retirement Income Index [Member] S&P TARGET DATE RETIREMENT INCOME INDEX (Reflects No Deduction for Fees, Expenses or Taxes) C000070628 [Member] Class R2 Class R2,JPMorgan SmartRetirement 2010 Fund Class R2 Member CLASS R2 SHARES C000070629 [Member] Class R2 Class R2. CLASS R2 SHARES C000070630 [Member] Class R2 Class R2,JPMorgan SmartRetirement 2020 Fund Class R2 Member CLASS R2 SHARES C000070633 [Member] Class R2 Class R2,JPMorgan SmartRetirement 2025 Fund Class R2 Member CLASS R2 SHARES C000070631 [Member] Class R2 Class R2,JPMorgan SmartRetirement 2030 Fund Class R2 Member CLASS R2 SHARES C000070634 [Member] Class R2 Class R2,JPMorgan SmartRetirement 2035 Fund Class R2 Member CLASS R2 SHARES C000070632 [Member] Class R2 Class R2,JPMorgan SmartRetirement 2040 Fund Class R2 Member CLASS R2 SHARES C000070635 [Member] Class R2 Class R2,JPMorgan SmartRetirement 2045 Fund Class R2 Member CLASS R2 SHARES C000070636 [Member] Class R2 Class R2,JPMorgan SmartRetirement 2050 Fund Class R2 Member CLASS R2 SHARES C000109817 [Member] Class R2 Class R2,JPMorgan SmartRetirement 2055 Fund Class R2 Member CLASS R2 SHARES