JPMorgan Mid Cap Value Fund Class L Investment Strategy - L Shares [Member] - JPMorgan Mid Cap Value Fund Class L	Jun. 30, 2026
Prospectus [Line Items]
Strategy [Heading]	<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]	Under normal circumstances, the Fund invests at least 80% of its Assets in equity securities of mid cap value companies.Mid cap companies are companies with market capitalizations similar to those within the universe of the Russell Midcap® Value Index at the time of purchase. As of September 30, 2026, the market capitalizations of the companies in the index ranged from approximately $1.76 billion to $251.62 billion. Value companies are those that the adviser believes are undervalued or attractively valued, based on one or more of the following factors: how the stock price compares to the company’s sales, earnings, and assets, as well as the overall value of the company compared to its sales and the capital invested in it.“Assets” means net assets, plus the amount of borrowings for investment purposes. In implementing its main strategies, the Fund’s investments are primarily in common stocks and real estate investment trusts (REITs).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. To the extent the Fund uses derivatives, the Fund will primarily use futures contracts to more effectively gain targeted equity exposure from its cash positions. Investment Process: In managing the Fund, the adviser employs a bottom-up approach to stock selection, constructing portfolios based on company fundamentals, quantitative screening and proprietary fundamental analysis. The adviser looks for quality companies, which appear to be attractively valued and have the potential to grow intrinsic value per share. Quality companies generally have a sustainable competitive position, relatively lower levels of business cyclicality, high returns on invested capital and strong experienced management teams. 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 issuers 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 adviser may sell a security for several reasons. A security may be sold due to a change in the company’s fundamentals or if the adviser believes the security is no longer attractively valued. Investments may also be sold if the adviser identifies a stock that it believes offers a better investment opportunity.

JPMorgan Mid Cap Value Fund Class L Investment Strategy - L Shares [Member] - JPMorgan Mid Cap Value Fund Class L

Jun. 30, 2026

<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]

Under normal circumstances, the Fund invests at least 80% of its Assets in equity securities of mid cap value companies.Mid cap companies are companies with market capitalizations similar to those within the universe of the Russell Midcap® Value Index at the time of purchase. As of September 30, 2026, the market capitalizations of the companies in the index ranged from approximately $1.76 billion to $251.62 billion. Value companies are those that the adviser believes are undervalued or attractively valued, based on one or more of the following factors: how the stock price compares to the company’s sales, earnings, and assets, as well as the overall value of the company compared to its sales and the capital invested in it.“Assets” means net assets, plus the amount of borrowings for investment purposes. In implementing its main strategies, the Fund’s investments are primarily in common stocks and real estate investment trusts (REITs).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. To the extent the Fund uses derivatives, the Fund will primarily use futures contracts to more effectively gain targeted equity exposure from its cash positions. Investment Process: In managing the Fund, the adviser employs a bottom-up approach to stock selection, constructing portfolios based on company fundamentals, quantitative screening and proprietary fundamental analysis. The adviser looks for quality companies, which appear to be attractively valued and have the potential to grow intrinsic value per share. Quality companies generally have a sustainable competitive position, relatively lower levels of business cyclicality, high returns on invested capital and strong experienced management teams. 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 issuers 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 adviser may sell a security for several reasons. A security may be sold due to a change in the company’s fundamentals or if the adviser believes the security is no longer attractively valued. Investments may also be sold if the adviser identifies a stock that it believes offers a better investment opportunity.