JPMorgan Floating Rate Income Fund Investment Strategy - R6 Shares [Member] - JPMorgan Floating Rate Income Fund	Feb. 28, 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]	The Fund invests mainly in floating rate debt instruments issued by corporations. These investments include leveraged loan assignments and participations (Loans) and commitments to purchase Loans (Unfunded Commitments). Loans will typically consist of senior secured floating rate loans (Senior Secured Loans) but may also include unsecured loans, second lien loans, bridge loans or loans that are junior or subordinated (Junior Loans). Leveraged loans generally are rated below investment grade or are considered by the adviser to be below investment grade debt securities (also known as “junk bonds,” “high yield securities” and “non-investment grade bonds”). In addition to investing in Loans, as part of its principal strategy, the Fund may also invest in other floating rate high yield securities such as corporate bonds. In addition, the Fund may invest in other corporate debt securities, warrants and rights, convertible securities, common stock, preferred stock and cash equivalents.Under normal circumstances, the Fund will invest at least 80% of its Assets in floating rate instruments.For purposes of this policy, “floating rate instruments” are floating rate loans, convertible securities, corporate bonds, preferred shares, other floating rate debt instruments, money market funds and equity securities (or rights to acquire securities) that are structured to pay a floating rate of interest or income. “Assets” means net assets plus the amount of borrowings for investment purposes.The Fund may invest up to 100% of the Fund’s total assets in below investment grade securities or unrated securities that the adviser deems to be of equivalent quality. Such securities may include so-called “distressed debt.” Distressed debt includes securities of issuers experiencing financial or operating difficulties, securities where the issuer has defaulted in the payment of interest or principal or in the performance of its covenants or agreements, securities of issuers that may be involved in bankruptcy proceedings, reorganizations or financial restructurings or securities of issuers operating in troubled industries. Generally, the Fund will not invest, at the time of investment, more than 40% of total assets in securities rated CCC+/Caa1 or lower or unrated securities deemed to be of equivalent quality to such securities. The Fund generally invests in securities issued in U.S. dollars including U.S. dollar-denominated securities issued by foreign corporations and U.S. affiliates of foreign corporations. Up to 20% of the Fund’s total assets may be invested in non-U.S. dollar denominated securities in foreign and “emerging markets.” Generally, the Fund attempts to minimize currency exposure to foreign currencies through hedging. Because of the nature of the Fund’s investments, the Fund may, from time to time, acquire securities and instruments related to its holdings that are issued in connection with amendments, waivers, conversions, exchanges, warrants, and rights offerings, as well as bankruptcy reorganizations and other financial or other corporate reorganizations. These securities and instruments include the types of securities that the Fund invests in directly as part of its principal strategy such as Loans, common stock, preferred stock, warrants and rights, corporate bonds, and notes, as well as other types of securities and instruments such as pay-in-kind (PIK) notes, zero-coupon notes, and private placements. In addition to direct investments in securities, 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 may use futures contracts, options, swaps, forwards and other foreign currency transactions in the management of portfolio investments. The Fund may also use such derivatives to hedge various investments, for risk management and/or to increase income or gain to the Fund. In particular, the Fund may use swaps structured as credit default swaps related to individual Loans or other securities or indexes of Loans or securities to gain or limit exposure to Loans and other securities, to mitigate risk exposure and to manage cash flow needs. In addition, the Fund may use currency derivatives to hedge non-dollar investments back to the U.S. dollar. The adviser buys and sells securities and investments for the Fund through a value-oriented, bottom-up research process that utilizes fundamental credit analysis to identify favorable and unfavorable risk/reward opportunities across sectors, industries and structures while minimizing credit risk. Such fundamental credit analysis includes focusing on the issuer’s underlying business prospects, capital requirements, capital structure, collateral, covenants, enterprise value, liquidity and management. The adviser strives to mitigate credit risk with research of sectors and issuers and will search for opportunities in inefficient sectors of the market where credit ratings have not caught up with fundamentals. The adviser’s fundamental analysis will be complemented by its macroeconomic insights as they relate to factors such as default rates and capital market liquidity. In addition to traditional fundamental credit and valuation analysis for distressed debt investments, the adviser focuses on identifying the cause (or potential causes) of a company’s distress and identifying catalysts that drive value creation and downside risk. To assess downside risk and upside potential of a particular investment, the adviser generally focuses on analyzing the potential volatility of a company’s enterprise value relative to the leveraged market value of the prospective or current investment. As part of its credit analysis, the adviser seeks to assess the impact of environmental, social and governance (ESG) factors on certain 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.

JPMorgan Floating Rate Income Fund Investment Strategy - R6 Shares [Member] - JPMorgan Floating Rate Income Fund

Feb. 28, 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]

The Fund invests mainly in floating rate debt instruments issued by corporations. These investments include leveraged loan assignments and participations (Loans) and commitments to purchase Loans (Unfunded Commitments). Loans will typically consist of senior secured floating rate loans (Senior Secured Loans) but may also include unsecured loans, second lien loans, bridge loans or loans that are junior or subordinated (Junior Loans). Leveraged loans generally are rated below investment grade or are considered by the adviser to be below investment grade debt securities (also known as “junk bonds,” “high yield securities” and “non-investment grade bonds”). In addition to investing in Loans, as part of its principal strategy, the Fund may also invest in other floating rate high yield securities such as corporate bonds. In addition, the Fund may invest in other corporate debt securities, warrants and rights, convertible securities, common stock, preferred stock and cash equivalents.Under normal circumstances, the Fund will invest at least 80% of its Assets in floating rate instruments.For purposes of this policy, “floating rate instruments” are floating rate loans, convertible securities, corporate bonds, preferred shares, other floating rate debt instruments, money market funds and equity securities (or rights to acquire securities) that are structured to pay a floating rate of interest or income. “Assets” means net assets plus the amount of borrowings for investment purposes.The Fund may invest up to 100% of the Fund’s total assets in below investment grade securities or unrated securities that the adviser deems to be of equivalent quality. Such securities may include so-called “distressed debt.” Distressed debt includes securities of issuers experiencing financial or operating difficulties, securities where the issuer has defaulted in the payment of interest or principal or in the performance of its covenants or agreements, securities of issuers that may be involved in bankruptcy proceedings, reorganizations or financial restructurings or securities of issuers operating in troubled industries. Generally, the Fund will not invest, at the time of investment, more than 40% of total assets in securities rated CCC+/Caa1 or lower or unrated securities deemed to be of equivalent quality to such securities. The Fund generally invests in securities issued in U.S. dollars including U.S. dollar-denominated securities issued by foreign corporations and U.S. affiliates of foreign corporations. Up to 20% of the Fund’s total assets may be invested in non-U.S. dollar denominated securities in foreign and “emerging markets.” Generally, the Fund attempts to minimize currency exposure to foreign currencies through hedging. Because of the nature of the Fund’s investments, the Fund may, from time to time, acquire securities and instruments related to its holdings that are issued in connection with amendments, waivers, conversions, exchanges, warrants, and rights offerings, as well as bankruptcy reorganizations and other financial or other corporate reorganizations. These securities and instruments include the types of securities that the Fund invests in directly as part of its principal strategy such as Loans, common stock, preferred stock, warrants and rights, corporate bonds, and notes, as well as other types of securities and instruments such as pay-in-kind (PIK) notes, zero-coupon notes, and private placements. In addition to direct investments in securities, 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 may use futures contracts, options, swaps, forwards and other foreign currency transactions in the management of portfolio investments. The Fund may also use such derivatives to hedge various investments, for risk management and/or to increase income or gain to the Fund. In particular, the Fund may use swaps structured as credit default swaps related to individual Loans or other securities or indexes of Loans or securities to gain or limit exposure to Loans and other securities, to mitigate risk exposure and to manage cash flow needs. In addition, the Fund may use currency derivatives to hedge non-dollar investments back to the U.S. dollar. The adviser buys and sells securities and investments for the Fund through a value-oriented, bottom-up research process that utilizes fundamental credit analysis to identify favorable and unfavorable risk/reward opportunities across sectors, industries and structures while minimizing credit risk. Such fundamental credit analysis includes focusing on the issuer’s underlying business prospects, capital requirements, capital structure, collateral, covenants, enterprise value, liquidity and management. The adviser strives to mitigate credit risk with research of sectors and issuers and will search for opportunities in inefficient sectors of the market where credit ratings have not caught up with fundamentals. The adviser’s fundamental analysis will be complemented by its macroeconomic insights as they relate to factors such as default rates and capital market liquidity. In addition to traditional fundamental credit and valuation analysis for distressed debt investments, the adviser focuses on identifying the cause (or potential causes) of a company’s distress and identifying catalysts that drive value creation and downside risk. To assess downside risk and upside potential of a particular investment, the adviser generally focuses on analyzing the potential volatility of a company’s enterprise value relative to the leveraged market value of the prospective or current investment. As part of its credit analysis, the adviser seeks to assess the impact of environmental, social and governance (ESG) factors on certain 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.