JPMorgan SmartRetirement Blend 2030 Fund Performance Management - R2 R3 R4 R5 R6 Shares [Member] - JPMorgan SmartRetirement Blend 2030 Fund	Jun. 30, 2025
Prospectus [Line Items]
Bar Chart and Performance Table [Heading]	<span style="color:#000000;font-family:Arial Narrow;font-size:11pt;font-weight:bold;">The Fund’s Past Performance</span>
Performance Narrative [Text Block]	This section provides some indication of the risks of investing in the Fund. The bar chart shows how the performance of the Fund’s Class R6 Shares has varied from year to year for 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 MSCI ACWI (net total return) Index, the S&P Target Date 2030 Index, and a composite benchmark. The MSCI ACWI (net total return) Index serves as the Fund’s regulatory index and provides a broad measure of market performance. The S&P Target Date 2030 Index and the composite benchmark are the Fund’s additional indices and are more representative of the Fund’s investment universe. The composite benchmark for the Fund is a customized benchmark of the following unmanaged market indexes: S&P 500 Index, S&P 400 Index, Russell 2000 Index, MSCI US REIT Index, MSCI EAFE Index (net total return), MSCI Emerging Markets Index (net total return), Bloomberg U.S. Aggregate Index, Bloomberg U.S. Treasury Inflation Notes: 1-10 Year Index, Bloomberg U.S. High Yield - 2% Issuer Cap Index, EMBI Global Diversified Index and FTSE 3-Month Treasury Bill Index. Each index is weighted to reflect the target allocations of the Fund and is adjusted over time to correspond to changes in the target allocations of the Fund. Returns shown for Class R3 and Class R4 Shares prior to their inception date are based on the performance of Class I Shares (which are not offered in this prospectus). The actual returns for Class R3 Shares would have been lower than those shown because Class R3 Shares have higher expenses than Class I Shares. The actual returns for Class R4 Shares would have been different to those shown because Class R4 Shares have different expenses as Class I Shares. 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 S&P Target Date 2030 Index, S&P 500 Index and S&P 400 Index (“Indexes”) are products of S&P Dow Jones Indices LLC and/or its affiliates and have been licensed for use by the adviser. Copyright © 2023. S&P Dow Jones Indices LLC, a subsidiary of S&P Global, Inc., and/or its affiliates. All rights reserved. Redistribution or reproduction in whole or in part are prohibited without written permission of S&P Dow Jones Indices LLC. For more information on any of S&P Dow Jones Indices LLC’s indices please visit www.spdji.com. S&P® is a registered trademark of Standard & Poor’s Financial Services LLC and Dow Jones® is a registered trademark of Dow Jones Trademark Holdings LLC. Neither S&P Dow Jones Indices LLC, Dow Jones Trademark Holdings LLC, their affiliates nor their third party licensors make any representation or warranty, express or implied, as to the ability of any index to accurately represent the asset class or market sector that it purports to represent and neither S&P Dow Jones Indices LLC, Dow Jones Trademark Holdings LLC, their affiliates nor their third party licensors shall have any liability for any errors, omissions, or interruptions of any index or the data included therein. Frank Russell Company is the source and owner of the Russell Index data contained or reflected in this material and all trademarks and copyrights related thereto. Frank Russell Company is not responsible for the formatting or configuration of this material or for any inaccuracy in the adviser's presentation thereof. Source: MSCI. The MSCI information may only be used for your internal use, may not be reproduced or redisseminated in any form and may not be used as a basis for or a component of any financial instruments or products or indices. None of the MSCI information is intended to constitute investment advice or a recommendation to make (or refrain from making) any kind of investment decision and may not be relied on as such. Historical data and analysis should not be taken as an indication or guarantee of any future performance analysis, forecast, or prediction. The MSCI information is provided on an "as is" basis and the user of this information assumes the entire risk of any use made of this information. MSCI, each of its affiliates and each other person involved in or related to compiling, computing or creating any MSCI information (collectively, the "MSCI Parties") expressly disclaims all warranties (including, without limitation, any warranties of originality, accuracy, completeness, timeliness, non-infringement, merchantability and fitness for a particular purpose) with respect to this information. Without limiting any of the foregoing, in no event shall any MSCI Party have any liability for any direct, indirect, special, incidental, punitive, consequential (including, without limitation, lost profits) or any other damages. (www.msci.com) 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. Information has been obtained from sources believed to be reliable but J.P. Morgan does not warrant its completeness or accuracy. The Index is used with permission. The Index may not be copied, used, or distributed without J.P. Morgan's prior written approval. Copyright 2024, J.P. Morgan Chase & Co. All rights reserved. The JPMorgan SmartRetirement Blend Funds have been developed solely by J.P. Morgan Investment Management Inc. (JPMIM). The JPMorgan SmartRetirement Blend Funds are not in any way connected to or sponsored, endorsed, sold or promoted by FTSE International Limited ("FTSE") or the London Stock Exchange Group plc and its group undertakings (collectively, the “LSE Group”) or Nareit. All rights in the FTSE 3-Month Treasury Bill Index (the “Index”) vest in FTSE and Nareit. "FTSE®" is a trade mark of the LSE Group and is used by FTSE International Limited ("FTSE") under licence. "NAREIT®" is a trade mark of the Nareit. The Index is calculated by FTSE. Neither FTSE, nor the LSE Group, nor Nareit accept any liability whatsoever to any person arising out of (a) the use of, reliance on or any error in the Index or (b) investment in or operation of the JPMorgan SmartRetirement Blend Funds. FTSE, the LSE Group, and Nareit make no claim, prediction, warranty or representation either as to the results to be obtained from the JPMorgan SmartRetirement Blend Funds or the suitability of the Index for the purpose to which it is being put by JPMIM.
Performance Past Does Not Indicate Future [Text]	<span style="color:#000000;font-family:Arial Narrow;font-size:10pt;">Past performance (before and after taxes) is </span><span style="color:#000000;font-family:Arial Narrow;font-size:10pt;">not necessarily an indication of how the Fund will perform in the future.</span>
Performance Information Illustrates Variability of Returns [Text]	<span style="color:#000000;font-family:Arial Narrow;font-size:10pt;">The bar chart shows how the performance of the </span><span style="color:#000000;font-family:Arial Narrow;font-size:10pt;">Fund’s Class R6 Shares has varied from year to year for 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]	<span style="color:#000000;font-family:Arial Narrow;font-size:10pt;">The table compares the Fund’s performance to the performance of the MSCI ACWI (net total return) Index, the S&P Target Date 2030 Index, and a composite benchmark. The MSCI ACWI (net total return) Index serves as the Fund’s regulatory index and provides a broad measure of market performance. The S&P Target Date 2030 Index and the composite benchmark are the Fund’s additional indices and are more representative of the Fund’s investment universe. The composite benchmark for the Fund is a customized benchmark of the following unmanaged market indexes: S&P 500 Index, S&P 400 Index, Russell 2000 Index, MSCI US REIT Index, MSCI EAFE Index (net total return), MSCI Emerging Markets Index (net total return), Bloomberg U.S. Aggregate Index, Bloomberg U.S. Treasury Inflation Notes: 1-10 Year Index, Bloomberg U.S. High Yield - 2% Issuer Cap Index, EMBI Global Diversified Index and FTSE 3-Month Treasury Bill Index. Each index is weighted to reflect the target allocations of the Fund and is adjusted over time to correspond to changes in the target allocations of the Fund.</span>
Bar Chart [Heading]	<span style="color:#FFFFFF;font-family:Arial Narrow;font-size:10pt;font-weight:bold;margin-left:0.0pt;">YEAR-BY-YEAR RETURNS — CLASS R6 SHARES</span>
Bar Chart Closing [Text Block]	Best Quarter2nd quarter, 202013.53%Worst Quarter1st quarter, 2020-15.47%The Fund’s year-to-date total returnthrough9/30/25was12.96%.
Performance Table Heading	<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 Narrative	After-tax returns are shown for only the Class R6 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.
Performance Table Uses Highest Federal Rate	<span style="color:#000000;font-family:Arial Narrow;font-size:10pt;">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. </span>
Performance Table Not Relevant to Tax Deferred	<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]	<span style="color:#000000;font-family:Arial Narrow;font-size:10pt;">After-tax returns are shown for only the Class R6 Shares and after-tax returns for the other classes will vary.</span>
Performance Availability Website Address [Text]	<span style="color:#000000;font-family:Arial Narrow;font-size:10pt;font-style:italic;">www.jpmorganfunds.com</span>
Performance Availability Phone [Text]	<span style="color:#000000;font-family:Arial Narrow;font-size:10pt;font-style:italic;">1-800-480-4111</span>
Class R6
Prospectus [Line Items]
Year to Date Return, Label [Optional Text]	<span style="font-family:Arial Narrow;font-size:9pt;margin-left:0.0pt;">The Fund’s year-to-date total return</span>
Bar Chart, Year to Date Return	12.96%
Bar Chart, Year to Date Return, Date	Sep. 30, 2025
Highest Quarterly Return, Label [Optional Text]	<span style="color:#000000;font-family:Arial Narrow;font-size:9pt;font-weight:bold;margin-left:0.0pt;">Best Quarter</span>
Highest Quarterly Return	13.53%
Highest Quarterly Return, Date	Jun. 30, 2020
Lowest Quarterly Return, Label [Optional Text]	<span style="color:#000000;font-family:Arial Narrow;font-size:9pt;font-weight:bold;margin-left:0.0pt;">Worst Quarter</span>
Lowest Quarterly Return	(15.47%)
Lowest Quarterly Return, Date	Mar. 31, 2020

JPMorgan SmartRetirement Blend 2030 Fund Performance Management - R2 R3 R4 R5 R6 Shares [Member] - JPMorgan SmartRetirement Blend 2030 Fund

Jun. 30, 2025

Bar Chart and Performance Table [Heading]

The Fund’s Past Performance

Performance Narrative [Text Block]

This section provides some indication of the risks of investing in the Fund. The bar chart shows how the performance of the Fund’s Class R6 Shares has varied from year to year for 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 MSCI ACWI (net total return) Index, the S&P Target Date 2030 Index, and a composite benchmark. The MSCI ACWI (net total return) Index serves as the Fund’s regulatory index and provides a broad measure of market performance. The S&P Target Date 2030 Index and the composite benchmark are the Fund’s additional indices and are more representative of the Fund’s investment universe. The composite benchmark for the Fund is a customized benchmark of the following unmanaged market indexes: S&P 500 Index, S&P 400 Index, Russell 2000 Index, MSCI US REIT Index, MSCI EAFE Index (net total return), MSCI Emerging Markets Index (net total return), Bloomberg U.S. Aggregate Index, Bloomberg U.S. Treasury Inflation Notes: 1-10 Year Index, Bloomberg U.S. High Yield - 2% Issuer Cap Index, EMBI Global Diversified Index and FTSE 3-Month Treasury Bill Index. Each index is weighted to reflect the target allocations of the Fund and is adjusted over time to correspond to changes in the target allocations of the Fund. Returns shown for Class R3 and Class R4 Shares prior to their inception date are based on the performance of Class I Shares (which are not offered in this prospectus). The actual returns for Class R3 Shares would have been lower than those shown because Class R3 Shares have higher expenses than Class I Shares. The actual returns for Class R4 Shares would have been different to those shown because Class R4 Shares have different expenses as Class I Shares. 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 S&P Target Date 2030 Index, S&P 500 Index and S&P 400 Index (“Indexes”) are products of S&P Dow Jones Indices LLC and/or its affiliates and have been licensed for use by the adviser. Copyright © 2023. S&P Dow Jones Indices LLC, a subsidiary of S&P Global, Inc., and/or its affiliates. All rights reserved. Redistribution or reproduction in whole or in part are prohibited without written permission of S&P Dow Jones Indices LLC. For more information on any of S&P Dow Jones Indices LLC’s indices please visit www.spdji.com. S&P® is a registered trademark of Standard & Poor’s Financial Services LLC and Dow Jones® is a registered trademark of Dow Jones Trademark Holdings LLC. Neither S&P Dow Jones Indices LLC, Dow Jones Trademark Holdings LLC, their affiliates nor their third party licensors make any representation or warranty, express or implied, as to the ability of any index to accurately represent the asset class or market sector that it purports to represent and neither S&P Dow Jones Indices LLC, Dow Jones Trademark Holdings LLC, their affiliates nor their third party licensors shall have any liability for any errors, omissions, or interruptions of any index or the data included therein. Frank Russell Company is the source and owner of the Russell Index data contained or reflected in this material and all trademarks and copyrights related thereto. Frank Russell Company is not responsible for the formatting or configuration of this material or for any inaccuracy in the adviser's presentation thereof. Source: MSCI. The MSCI information may only be used for your internal use, may not be reproduced or redisseminated in any form and may not be used as a basis for or a component of any financial instruments or products or indices. None of the MSCI information is intended to constitute investment advice or a recommendation to make (or refrain from making) any kind of investment decision and may not be relied on as such. Historical data and analysis should not be taken as an indication or guarantee of any future performance analysis, forecast, or prediction. The MSCI information is provided on an "as is" basis and the user of this information assumes the entire risk of any use made of this information. MSCI, each of its affiliates and each other person involved in or related to compiling, computing or creating any MSCI information (collectively, the "MSCI Parties") expressly disclaims all warranties (including, without limitation, any warranties of originality, accuracy, completeness, timeliness, non-infringement, merchantability and fitness for a particular purpose) with respect to this information. Without limiting any of the foregoing, in no event shall any MSCI Party have any liability for any direct, indirect, special, incidental, punitive, consequential (including, without limitation, lost profits) or any other damages. (www.msci.com) 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. Information has been obtained from sources believed to be reliable but J.P. Morgan does not warrant its completeness or accuracy. The Index is used with permission. The Index may not be copied, used, or distributed without J.P. Morgan's prior written approval. Copyright 2024, J.P. Morgan Chase & Co. All rights reserved. The JPMorgan SmartRetirement Blend Funds have been developed solely by J.P. Morgan Investment Management Inc. (JPMIM). The JPMorgan SmartRetirement Blend Funds are not in any way connected to or sponsored, endorsed, sold or promoted by FTSE International Limited ("FTSE") or the London Stock Exchange Group plc and its group undertakings (collectively, the “LSE Group”) or Nareit. All rights in the FTSE 3-Month Treasury Bill Index (the “Index”) vest in FTSE and Nareit. "FTSE®" is a trade mark of the LSE Group and is used by FTSE International Limited ("FTSE") under licence. "NAREIT®" is a trade mark of the Nareit. The Index is calculated by FTSE. Neither FTSE, nor the LSE Group, nor Nareit accept any liability whatsoever to any person arising out of (a) the use of, reliance on or any error in the Index or (b) investment in or operation of the JPMorgan SmartRetirement Blend Funds. FTSE, the LSE Group, and Nareit make no claim, prediction, warranty or representation either as to the results to be obtained from the JPMorgan SmartRetirement Blend Funds or the suitability of the Index for the purpose to which it is being put by JPMIM.

Performance Past Does Not Indicate Future [Text]

Past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future.

Performance Information Illustrates Variability of Returns [Text]

The bar chart shows how the performance of the Fund’s Class R6 Shares has varied from year to year for the past ten calendar years. The table shows the average annual total returns over the past one year, five years and ten years.

Performance Additional Market Index [Text]

The table compares the Fund’s performance to the performance of the MSCI ACWI (net total return) Index, the S&P Target Date 2030 Index, and a composite benchmark. The MSCI ACWI (net total return) Index serves as the Fund’s regulatory index and provides a broad measure of market performance. The S&P Target Date 2030 Index and the composite benchmark are the Fund’s additional indices and are more representative of the Fund’s investment universe. The composite benchmark for the Fund is a customized benchmark of the following unmanaged market indexes: S&P 500 Index, S&P 400 Index, Russell 2000 Index, MSCI US REIT Index, MSCI EAFE Index (net total return), MSCI Emerging Markets Index (net total return), Bloomberg U.S. Aggregate Index, Bloomberg U.S. Treasury Inflation Notes: 1-10 Year Index, Bloomberg U.S. High Yield - 2% Issuer Cap Index, EMBI Global Diversified Index and FTSE 3-Month Treasury Bill Index. Each index is weighted to reflect the target allocations of the Fund and is adjusted over time to correspond to changes in the target allocations of the Fund.

Bar Chart [Heading]

YEAR-BY-YEAR RETURNS — CLASS R6 SHARES

Bar Chart Closing [Text Block]

Best Quarter2nd quarter, 202013.53%Worst Quarter1st quarter, 2020-15.47%The Fund’s year-to-date total returnthrough9/30/25was12.96%.

Performance Table Heading

AVERAGE ANNUAL TOTAL RETURNS(For periods ended December 31, 2024)

Performance Table Narrative

After-tax returns are shown for only the Class R6 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.

Performance Table Uses Highest Federal Rate

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.

Performance Table Not Relevant to Tax Deferred

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.

Performance Table One Class of after Tax Shown [Text]

After-tax returns are shown for only the Class R6 Shares and after-tax returns for the other classes will vary.

Performance Availability Website Address [Text]

www.jpmorganfunds.com

Performance Availability Phone [Text]

1-800-480-4111

Class R6

Prospectus [Line Items]

Year to Date Return, Label [Optional Text]

The Fund’s year-to-date total return

Bar Chart, Year to Date Return

12.96%