v3.26.1
JPMorgan High Yield Fund Investment Risks - A C I Shares [Member] - JPMorgan High Yield Fund
Feb. 28, 2026
General Market Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block] 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. Securities in the Fund’s portfolio may underperform in comparison to securities in general financial markets, a particular financial market or other asset classes due to a number of factors, including inflation (or expectations for inflation), deflation (or expectations for deflation), interest rates, global demand for particular products or resources, market instability, financial system instability, debt crises and downgrades, embargoes, tariffs, trade wars, retaliatory trade measures, sanctions and other trade barriers, supply chain disruptions, regulatory events, other governmental trade or market control programs and related geopolitical events. In addition, the value of the Fund’s investments may be negatively affected by the occurrence of global events such as war, terrorism, environmental disasters, natural disasters or events, country instability, and infectious disease epidemics or pandemics or the threat or potential of one or more such factors and occurrences.
High Yield Securities and Loan Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block] High Yield Securities and Loan Risk. The Fund invests in instruments including junk bonds, Loans and instruments that are issued by companies that are highly leveraged, less creditworthy or financially distressed. These investments are considered to be speculative and may be subject to greater risk of loss (including substantial or total loss), greater sensitivity to economic changes, valuation difficulties and potential illiquidity. Such investments may be subject to additional risks including subordination to other creditors, no collateral or limited rights in collateral, lack of a regular trading market, extended settlement periods, liquidity risks, prepayment risks, potentially less protection under the federal securities laws and lack of publicly available information. In recent years, there has been a broad trend of weaker or less restrictive covenant protections in both the Loan and high yield markets. Among other things, under such weaker or less restrictive covenants, borrowers might be able to exercise more flexibility with respect to certain activities than borrowers who are subject to stronger or more protective covenants. For example, borrowers might be able to incur more debt, including secured debt, return more capital to shareholders, remove or reduce assets that are designated as collateral securing Loans or high yield securities, increase the claims against assets that are permitted against collateral securing Loans or high yield securities or otherwise manage their business in ways that could impact creditors negatively. In addition, certain privately held borrowers might be permitted to file less frequent, less detailed or less timely financial reporting or other information, which could negatively impact the value of the Loans or high yield securities issued by such borrowers. Each of these factors might negatively impact the Loans and high yield instruments held by the Fund. High yield securities and Loans that are deemed to be liquid at the time of purchase may become illiquid. No active trading market may exist for some Loans and other instruments and certain investments may be subject to restrictions on resale. In addition, the settlement period for Loans is uncertain as there is no standardized settlement schedule applicable to such investments. Certain Loans may take more than seven days to settle. The inability to dispose of the Fund’s securities and other investments in a timely fashion could result in losses to the Fund. Because some instruments may have a more limited secondary market, liquidity and valuation risk is more pronounced for the Fund than for funds that invest primarily in other types of fixed income instruments or equity securities. When Loans and other instruments are prepaid, the Fund may have to reinvest in instruments with a lower yield or fail to recover additional amounts (i.e., premiums) paid for these instruments, resulting in an unexpected capital loss and/or a decrease in the amount of dividends and yield. Certain Loans may not be considered securities under the federal securities laws and, therefore, investments in such Loans may not be subject to certain protections under those laws. In addition, the adviser may not have access to material non-public information to which other investors may have access.
Covenant Lite Loan Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block] Covenant Lite Risk. The Fund may invest in, or obtain exposure to, floating rate loans that are “covenant lite.” Covenants contained in loan and high yield bond documentation are intended to protect lenders by imposing certain restrictions and other limitations on a borrower’s operations or assets and by providing certain information and consent rights to lenders. Covenant lite loans and certain high yield bonds may lack financial maintenance covenants that in certain situations can allow lenders to claim a default on the loan to seek to protect the interests of the lenders. The absence of financial maintenance covenants in a covenant lite loan or high yield bond might result in a lower recovery in the event of a default by the borrower, as the lender may not have had the opportunity to negotiate with the borrower prior to such default. Covenant lite loans and high yield bonds have become much more prevalent in recent years.
Credit Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block] Credit Risk. The Fund’s investments are subject to the risk that issuers, guarantors and/or counterparties will fail to make payments when due or default completely. Prices of the Fund’s investments may be adversely affected if any of the issuers or counterparties it is invested in are subject to an actual or perceived deterioration in their credit quality. Credit spreads may increase, which may reduce the market values of the Fund’s securities. Credit spread risk is the risk that economic and market conditions or any actual or perceived credit deterioration may lead to an increase in the credit spreads (i.e., the difference in yield between two securities of similar maturity but different credit quality) and a decline in price of the issuer’s securities.
Prepayment Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block] Prepayment Risk. The issuer of certain securities may repay principal in advance, especially when yields fall. Changes in the rate at which prepayments or redemptions occur can affect the return on investment of these securities. When debt obligations are prepaid or when securities are called, the Fund may have to reinvest in securities with a lower yield. The Fund also may fail to recover additional amounts (i.e., premiums) paid for securities with higher coupons, resulting in an unexpected capital loss.
Smaller Company Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block] Smaller Company Risk. Investments in smaller companies (mid cap and small cap companies) may be riskier, less liquid, more volatile and more vulnerable to economic, market and industry changes than investment in larger, more established companies. Investments in smaller companies may trade less frequently and in smaller volumes than investments in larger companies. As a result, changes in the price of investments in such companies may be more sudden or erratic than the prices of investments of larger companies, especially over the short term. These risks are higher for small cap companies.
Equity Market Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block] 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.
Interest Rate Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block] Interest Rate Risk. The Fund’s investments in bonds and other debt securities will change in value based on changes in interest rates. If rates increase, the value of these investments generally declines. Securities with greater interest rate sensitivity and longer maturities generally are subject to greater fluctuations in value. The Fund may invest in variable and floating rate Loans and other variable and floating rate securities. Although these instruments are generally less sensitive to interest rate changes than fixed rate instruments, the value of floating rate Loans and other securities may decline if their interest rates do not rise as quickly, or as much, as general interest rates. The Fund may face a heightened level of interest rate risk due to certain changes in monetary policy. It is difficult to predict the pace at which central banks or monetary authorities may change interest rates or the timing, frequency, or magnitude of such changes. Any such changes could be sudden and could expose debt markets to significant volatility and reduced liquidity for Fund investments.
Derivatives Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block] Derivatives Risk. Derivatives, including options, futures contracts and swaps, 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. Certain 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. Derivatives also can expose the Fund to derivative liquidity risk, which includes risks involving the liquidity demands that derivatives can create to make payments of margin, collateral, or settlement payments to counterparties, legal risk, which includes the risk of loss resulting from insufficient or unenforceable contractual documentation, insufficient capacity or authority of the Fund’s counterparty and operational risk, which includes documentation or settlement issues, system failures, inadequate controls and human error. Certain of the Fund’s transactions in foreign currency derivatives and other derivatives could also affect the amount, timing and character of distributions to shareholders which may result in the Fund realizing more ordinary income and short-term capital gain subject to tax at ordinary income tax rates than it would if it did not engage in such transactions, which may adversely impact the Fund’s after-tax returns.
Privately Placed Securities Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block] Privately Placed Securities Risk. Privately placed securities generally are less liquid than publicly traded securities and the Fund may not always be able to sell such securities without experiencing delays in finding buyers or reducing the sale price for such securities. The disposition of some of the securities held by the Fund may be restricted under federal securities laws. As a result, the Fund may not be able to dispose of such investments at a time when, or at a price at which, it desires to do so and may have to bear expenses of registering these securities, if necessary. These securities may also be difficult to value.
Foreign Issuer Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block] Foreign Issuer Risk. U.S. dollar-denominated securities of foreign issuers or U.S. affiliates of foreign issuers may be subject to additional risks not faced by domestic issuers. These risks include political and economic risks, civil conflicts and war, greater volatility, expropriation and nationalization risks, sanctions or other measures by the United States or other governments and regulatory issues facing issuers in such foreign countries. Events and evolving conditions in certain economies or markets may alter the risks associated with investments tied to countries or regions that historically were perceived as comparatively stable becoming riskier and more volatile. Foreign issuers may not be subject to uniform accounting, auditing and financial reporting standards and there may be less reliable and publicly available financial and other information about such issuers as compared to domestic issuers.
Convertible Securities Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block] Convertible Securities Risk. The value of convertible securities tends to decline as interest rates rise and, because of the conversion feature, tends to vary with fluctuations in the market value of the underlying securities. Contingent convertible securities are subject to additional risk factors. A contingent convertible security is a hybrid debt security typically issued by a non-U.S. bank that may be convertible into equity or may be written down if a pre-specified trigger event such as a decline in capital ratio below a prescribed threshold occurs. If such a trigger event occurs, the Fund may lose the principal amount invested on a permanent or temporary basis or the contingent convertible security may be converted to equity. In addition to being subject to a possible write-down upon the occurrence of a trigger event, contingent convertible securities may also be subject to a permanent write-down or conversion into equity (in whole or in part), if the applicable bank regulator or other public administrative authority having responsibility for managing the orderly dissolution of an institution (the resolution authority) has determined that the issuer is not viable. Even though the Fund does not invest in common stock as a principal investment strategy, the Fund will be subject to increased equity market risk in the event that such securities are converted to equity. Coupon payments on contingent convertible securities may be discretionary and may be cancelled by the issuer. Holders of contingent convertible securities may suffer a loss of capital when comparable equity holders do not. As contingent convertible securities may be perpetual or have long-dated maturities, they may face greater interest rate sensitivity and may be subject to greater fluctuations in value than securities with shorter maturity dates. Such securities also may be subject to prepayment risk due to optional or mandatory redemption provisions. Certain types of convertible securities may decline in value or lose their value entirely if the issuer’s financial condition is significantly impaired.
Preferred Securities Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block] Preferred Securities Risk. Preferred securities generally have a preference as to dividends and liquidation over an issuer’s common stock but ranks junior to debt securities in an issuer’s capital structure. Unlike interest payments on debt securities, dividends on preferred securities are payable only if declared by the issuer’s board of directors. As a consequence, if the board of directors of an issuer does not declare dividends or distributions for the relevant dividend or distribution periods, the issuer will not be obligated to pay dividends or distributions on the relevant payment date, and such dividends and distributions may be forfeited. In addition, preferred securities are generally subject to the market and issuer risks applicable to equity securities generally, including fluctuations in value due to broad market or company-specific developments. Holders of preferred securities typically do not have voting rights except in certain circumstances where they may be given only limited voting rights. Preferred securities also may be subject to optional or mandatory redemption provisions.
Geographic Focus Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block] Geographic Focus Risk. The Fund may focus its investments in one or more regions or small groups of countries. As a result, the Fund’s performance may be subject to greater volatility than a more geographically diversified fund.
Industry and Sector Focus Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block] Industry and Sector Focus Risk. At times, the Fund may increase the relative emphasis of its investments in a particular industry or sector. The prices of securities of issuers in a particular industry or sector may be more susceptible to fluctuations due to changes in economic or business conditions, government regulations, availability of basic resources or supplies, contagion risk within a particular industry or sector or to other industries or sectors, or other events that affect that industry or sector more than securities of issuers in other industries and sectors. To the extent that the Fund increases the relative emphasis of its investments in a particular industry or sector, the value of the Fund’s shares may fluctuate in response to events affecting that industry or sector.
Transactions Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block] Transactions Risk. The Fund could experience a loss and its liquidity may be negatively impacted when selling securities or liquidating other investments to meet redemption requests. 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. Similarly, large purchases of Fund shares may adversely affect the Fund’s performance to the extent that the Fund is delayed in investing new cash and is required to maintain a larger cash position than it ordinarily would.
Risk Lose Money [Member]  
Prospectus [Line Items]  
Risk [Text Block] You could lose money investing in the Fund.
Risk Not Insured Depository Institution [Member]  
Prospectus [Line Items]  
Risk [Text Block] 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 any other government agency.