JPMorgan U.S. Treasury Plus Money Market Fund Investment Risks - Morgan C Shares [Member] - JPMorgan U.S. Treasury Plus Money Market Fund	Feb. 28, 2026
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 securities. Although these instruments are generally less sensitive to interest rate changes than fixed rate instruments, the value of variable and floating rate 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.
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.
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.
Government Securities Risk [Member]
Prospectus [Line Items]
Risk [Text Block]	Government Securities Risk. U.S. Government securities are subject to market risk, interest rate risk and credit risk. Securities, such as those issued or guaranteed by the U.S. Treasury, that are backed by the full faith and credit of the United States are guaranteed only as to the timely payment of interest and principal when held to maturity and the market prices for such securities will fluctuate. The income generated by investments may not keep pace with inflation. Actions by governments and central banking authorities could result in changes in interest rates. Periods of higher inflation could cause such authorities to raise interest rates, which may adversely affect the Fund and its investments. Notwithstanding that these securities are backed by the full faith and credit of the United States, circumstances could arise that would prevent the payment of interest or principal (e.g., Congressional debt ceiling impasses). This would result in losses to the Fund. U.S. Government securities include zero coupon securities, which tend to be subject to greater market risk than interest-paying securities of similar maturities.
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 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.
Net Asset Value Risk [Member]
Prospectus [Line Items]
Risk [Text Block]	Net Asset Value Risk. There is no assurance that the Fund will meet its investment objective of maintaining a NAV of $1.00 per share on a continuous basis. Furthermore, there can be no assurance that the Fund’s affiliates will purchase distressed assets from the Fund, make capital infusions, enter into capital support agreements or take other actions to ensure that the Fund maintains a NAV of $1.00 per share. In the event any money market fund fails to maintain a stable NAV, other money market funds, including the Fund, could face a universal risk of increased redemption pressures, potentially jeopardizing the stability of their NAVs. In general, certain other money market funds have in the past failed to maintain stable NAVs and there can be no assurance that such failures and resulting redemption pressures will not occur in the future.
Repurchase Agreement Risk [Member]
Prospectus [Line Items]
Risk [Text Block]	Repurchase Agreement Risk. There is a risk that the counterparty to a repurchase agreement will default or otherwise become unable to honor a financial obligation and the value of your investment could decline as a result.
Risk Associated with the Fund Holding Cash [Member]
Prospectus [Line Items]
Risk [Text Block]	Risk Associated with the Fund Holding Cash. The Fund will generally hold a portion of its assets in cash, primarily to meet redemptions. Cash positions may hurt performance and may subject the Fund to additional risks and costs, such as increased exposure to the custodian bank holding the assets and any fees imposed for large cash balances.
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.
Risk Lose Money [Member]
Prospectus [Line Items]
Risk [Text Block]	You could lose money by 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.
Risk Money Market Fund May Not Preserve Dollar [Member]
Prospectus [Line Items]
Risk [Text Block]	Although the Fund seeks to preserve the value of your investment at $1.00 per share, it cannot guarantee it will do so.
Risk Money Market Fund Sponsor May Not Provide Support [Member]
Prospectus [Line Items]
Risk [Text Block]	The Fund’s sponsor is not required to reimburse the Fund for losses, and you should not expect that the sponsor will provide financial support to the Fund at any time, including during periods of market stress.

JPMorgan U.S. Treasury Plus Money Market Fund Investment Risks - Morgan C Shares [Member] - JPMorgan U.S. Treasury Plus Money Market Fund

Feb. 28, 2026

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 securities. Although these instruments are generally less sensitive to interest rate changes than fixed rate instruments, the value of variable and floating rate 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.

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.

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.

Government Securities Risk [Member]

Prospectus [Line Items]

Risk [Text Block]

Government Securities Risk. U.S. Government securities are subject to market risk, interest rate risk and credit risk. Securities, such as those issued or guaranteed by the U.S. Treasury, that are backed by the full faith and credit of the United States are guaranteed only as to the timely payment of interest and principal when held to maturity and the market prices for such securities will fluctuate. The income generated by investments may not keep pace with inflation. Actions by governments and central banking authorities could result in changes in interest rates. Periods of higher inflation could cause such authorities to raise interest rates, which may adversely affect the Fund and its investments. Notwithstanding that these securities are backed by the full faith and credit of the United States, circumstances could arise that would prevent the payment of interest or principal (e.g., Congressional debt ceiling impasses). This would result in losses to the Fund. U.S. Government securities include zero coupon securities, which tend to be subject to greater market risk than interest-paying securities of similar maturities.

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 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.

Net Asset Value Risk [Member]

Prospectus [Line Items]

Risk [Text Block]

Net Asset Value Risk. There is no assurance that the Fund will meet its investment objective of maintaining a NAV of $1.00 per share on a continuous basis. Furthermore, there can be no assurance that the Fund’s affiliates will purchase distressed assets from the Fund, make capital infusions, enter into capital support agreements or take other actions to ensure that the Fund maintains a NAV of $1.00 per share. In the event any money market fund fails to maintain a stable NAV, other money market funds, including the Fund, could face a universal risk of increased redemption pressures, potentially jeopardizing the stability of their NAVs. In general, certain other money market funds have in the past failed to maintain stable NAVs and there can be no assurance that such failures and resulting redemption pressures will not occur in the future.

Repurchase Agreement Risk [Member]

Prospectus [Line Items]

Risk [Text Block]

Repurchase Agreement Risk. There is a risk that the counterparty to a repurchase agreement will default or otherwise become unable to honor a financial obligation and the value of your investment could decline as a result.

Risk Associated with the Fund Holding Cash [Member]

Prospectus [Line Items]

Risk [Text Block]

Risk Associated with the Fund Holding Cash. The Fund will generally hold a portion of its assets in cash, primarily to meet redemptions. Cash positions may hurt performance and may subject the Fund to additional risks and costs, such as increased exposure to the custodian bank holding the assets and any fees imposed for large cash balances.

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.

Risk Lose Money [Member]

Prospectus [Line Items]

Risk [Text Block]

You could lose money by 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.

Risk Money Market Fund May Not Preserve Dollar [Member]

Prospectus [Line Items]

Risk [Text Block]

Although the Fund seeks to preserve the value of your investment at $1.00 per share, it cannot guarantee it will do so.

Risk Money Market Fund Sponsor May Not Provide Support [Member]

Prospectus [Line Items]

Risk [Text Block]

The Fund’s sponsor is not required to reimburse the Fund for losses, and you should not expect that the sponsor will provide financial support to the Fund at any time, including during periods of market stress.