v3.26.1
Investment Strategy
Feb. 28, 2026
Academy Shares [Member] | JPMorgan Prime Money Market Fund  
Prospectus [Line Items]  
Strategy [Heading] <span style="color:#000000;font-family:Arial Narrow;font-size:11pt;font-weight:bold;">The Fund’s Main Investment Strategy</span>
Strategy Narrative [Text Block] The Fund invests in high quality, short-term money market instruments which are issued and payable in U.S. dollars. The Fund principally invests in: ●high quality commercial paper and other short-term debt securities, including floating and variable rate demand notes of U.S. and foreign corporations, ●debt securities issued or guaranteed by qualified U.S. and foreign banks, including certificates of deposit, time deposits and other short-term securities, ●securities issued or guaranteed by the U.S. government, its agencies or instrumentalities or Government-Sponsored Enterprises (“GSEs”), ●asset-backed securities, ●repurchase agreements, and ●taxable municipal obligations.The Fund is a money market fund managed in the following manner: ●The Fund calculates its net asset value to four decimals (e.g., $1.0000) using market-based pricing and operates with a floating net asset value. ●The dollar-weighted average maturity of the Fund will be 60 days or less and the dollar-weighted average life to maturity will be 120 days or less. ●The Fund will only buy securities that have remaining maturities of 397 days or less or securities otherwise permitted to be purchased because of maturity shortening provisions under applicable regulation. ●The Fund invests only in U.S. dollar-denominated securities. ●The Fund seeks to invest in securities that present minimal credit risk.The Fund may invest significantly in securities with floating or variable rates of interest. Their yields will vary as interest rates change. The securities in which the Fund may invest include privately placed securities. The Fund will generally hold a portion of its assets in cash, primarily to meet redemptions. The Fund will concentrate its investments in the banking industry. Therefore, under normal conditions, the Fund will invest at least 25% of its total assets in securities issued by companies in the banking industry. The Fund may, however, invest less than 25% of its total assets in this industry as a temporary defensive measure. The Fund may trade securities on a when-issued, delayed settlement or forward commitment basis. The Fund’s adviser seeks to develop an appropriate portfolio by considering the differences in yields among securities of different maturities, market sectors and issuers. Liquidity Fees The Fund’s policies and procedures require the Fund to impose a mandatory liquidity fee if the Fund experiences total daily net redemptions (based on flow information available within a reasonable period after the last computation of the Fund’s net asset value on that day) exceeding 5% of net assets, unless the amount of the mandatory liquidity fee would be de minimis. The size of the mandatory liquidity fee to be charged will be based on a good faith estimate, supported by data, of the costs the Fund would incur if it sold a pro rata amount of each security in its portfolio to satisfy the amount of the net redemptions. If these costs cannot be determined in good faith, a 1% default fee will be applied. If the amount of the mandatory liquidity fee would be de minimis (i.e., less than 0.01% of the value of the shares redeemed), the Fund is not required to charge a mandatory liquidity fee. In addition, the Fund’s policies and procedures permit the Fund to impose a discretionary liquidity fee on redemptions of up to 2% of the value of the shares redeemed if the adviser, as the delegate of the Board, determines it is in the best interests of the Fund.
Summary of Definition of Rule 35d-1 Term in Fund Name [Text Block] The Fund is a money market fund managed in the following manner: ●The Fund calculates its net asset value to four decimals (e.g., $1.0000) using market-based pricing and operates with a floating net asset value. ●The dollar-weighted average maturity of the Fund will be 60 days or less and the dollar-weighted average life to maturity will be 120 days or less. ●The Fund will only buy securities that have remaining maturities of 397 days or less or securities otherwise permitted to be purchased because of maturity shortening provisions under applicable regulation. ●The Fund invests only in U.S. dollar-denominated securities. ●The Fund seeks to invest in securities that present minimal credit risk.
Summary of Selection Criteria for Rule 35d-1 Term in Fund Name [Text Block] The Fund invests in high quality, short-term money market instruments which are issued and payable in U.S. dollars. The Fund principally invests in: ●high quality commercial paper and other short-term debt securities, including floating and variable rate demand notes of U.S. and foreign corporations, ●debt securities issued or guaranteed by qualified U.S. and foreign banks, including certificates of deposit, time deposits and other short-term securities, ●securities issued or guaranteed by the U.S. government, its agencies or instrumentalities or Government-Sponsored Enterprises (“GSEs”), ●asset-backed securities, ●repurchase agreements, and ●taxable municipal obligations.
Strategy Portfolio Concentration [Text] <span style="color:#000000;font-family:Arial Narrow;font-size:10pt;">The Fund will concentrate its investments in the banking industry. Therefore, under normal conditions, the Fund will invest at least 25% of its total assets in securities issued by companies in the banking industry.</span>
Academy Shares [Member] | JPMorgan 100 U.S. Treasury Securities Money Market Fund  
Prospectus [Line Items]  
Strategy [Heading] <span style="color:#000000;font-family:Arial Narrow;font-size:11pt;font-weight:bold;">The Fund’s Main Investment Strategy</span>
Strategy Narrative [Text Block] Under normal conditions, the Fund invests its assets exclusively in obligations of the U.S. Treasury, including Treasury bills, bonds and notes. These investments carry different interest rates, maturities and issue dates. The interest on these securities is generally exempt from state and local income taxes. Ordinarily, the Fund does not buy securities issued or guaranteed by agencies of the U.S. government.The Fund is a money market fund managed in the following manner: ●The Fund seeks to maintain a net asset value (“NAV”) of $1.00 per share. ●The dollar-weighted average maturity of the Fund will be 60 days or less and the dollar-weighted average life to maturity will be 120 days or less. ●The Fund will only buy securities that have remaining maturities of 397 days or less or securities otherwise permitted to be purchased because of maturity shortening provisions under applicable regulation. ●The Fund seeks to invest in securities that present minimal credit risk. The Fund will generally hold a portion of its assets in cash, primarily to meet redemptions. The Fund intends to continue to qualify as a “government money market fund,” as such term is defined in or interpreted under Rule 2a-7 under the Investment Company Act of 1940, as amended (“Investment Company Act”). “Government money market funds” are required to invest at least 99.5% of their assets in (i) cash, (ii) securities issued or guaranteed by the United States or certain U.S. government agencies or instrumentalities and/or (iii) repurchase agreements that are collateralized fully, and are exempt from requirements that permit money market funds to impose a liquidity fee. While the J.P. Morgan Funds’ Board of Trustees (the “Board”) may elect to subject the Fund to liquidity fee requirements in the future, the Board has not elected to do so at this time. A government money market fund may also include investments in other government money market funds as an eligible investment for purposes of the 99.5% requirement above. The Fund’s adviser seeks to develop an appropriate portfolio by considering the differences in yields among securities of different maturities and issue dates.
Summary of Definition of Rule 35d-1 Term in Fund Name [Text Block] The Fund is a money market fund managed in the following manner: ●The Fund seeks to maintain a net asset value (“NAV”) of $1.00 per share. ●The dollar-weighted average maturity of the Fund will be 60 days or less and the dollar-weighted average life to maturity will be 120 days or less. ●The Fund will only buy securities that have remaining maturities of 397 days or less or securities otherwise permitted to be purchased because of maturity shortening provisions under applicable regulation. ●The Fund seeks to invest in securities that present minimal credit risk. The Fund will generally hold a portion of its assets in cash, primarily to meet redemptions. The Fund intends to continue to qualify as a “government money market fund,” as such term is defined in or interpreted under Rule 2a-7 under the Investment Company Act of 1940, as amended (“Investment Company Act”). “Government money market funds” are required to invest at least 99.5% of their assets in (i) cash, (ii) securities issued or guaranteed by the United States or certain U.S. government agencies or instrumentalities and/or (iii) repurchase agreements that are collateralized fully, and are exempt from requirements that permit money market funds to impose a liquidity fee.
Summary of Selection Criteria for Rule 35d-1 Term in Fund Name [Text Block] Under normal conditions, the Fund invests its assets exclusively in obligations of the U.S. Treasury, including Treasury bills, bonds and notes. These investments carry different interest rates, maturities and issue dates. The interest on these securities is generally exempt from state and local income taxes. Ordinarily, the Fund does not buy securities issued or guaranteed by agencies of the U.S. government.
Agency Shares [Member] | JPMorgan Prime Money Market Fund  
Prospectus [Line Items]  
Strategy [Heading] <span style="color:#000000;font-family:Arial Narrow;font-size:11pt;font-weight:bold;">The Fund’s Main Investment Strategy</span>
Strategy Narrative [Text Block] The Fund invests in high quality, short-term money market instruments which are issued and payable in U.S. dollars. The Fund principally invests in: ●high quality commercial paper and other short-term debt securities, including floating and variable rate demand notes of U.S. and foreign corporations, ●debt securities issued or guaranteed by qualified U.S. and foreign banks, including certificates of deposit, time deposits and other short-term securities, ●securities issued or guaranteed by the U.S. government, its agencies or instrumentalities or Government-Sponsored Enterprises (“GSEs”), ●asset-backed securities, ●repurchase agreements, and ●taxable municipal obligations.The Fund is a money market fund managed in the following manner: ●The Fund calculates its net asset value to four decimals (e.g., $1.0000) using market-based pricing and operates with a floating net asset value. ●The dollar-weighted average maturity of the Fund will be 60 days or less and the dollar-weighted average life to maturity will be 120 days or less. ●The Fund will only buy securities that have remaining maturities of 397 days or less or securities otherwise permitted to be purchased because of maturity shortening provisions under applicable regulation. ●The Fund invests only in U.S. dollar-denominated securities. ●The Fund seeks to invest in securities that present minimal credit risk.The Fund may invest significantly in securities with floating or variable rates of interest. Their yields will vary as interest rates change. The securities in which the Fund may invest include privately placed securities. The Fund will generally hold a portion of its assets in cash, primarily to meet redemptions. The Fund will concentrate its investments in the banking industry. Therefore, under normal conditions, the Fund will invest at least 25% of its total assets in securities issued by companies in the banking industry. The Fund may, however, invest less than 25% of its total assets in this industry as a temporary defensive measure. The Fund may trade securities on a when-issued, delayed settlement or forward commitment basis. The Fund’s adviser seeks to develop an appropriate portfolio by considering the differences in yields among securities of different maturities, market sectors and issuers. Liquidity Fees The Fund’s policies and procedures require the Fund to impose a mandatory liquidity fee if the Fund experiences total daily net redemptions (based on flow information available within a reasonable period after the last computation of the Fund’s net asset value on that day) exceeding 5% of net assets, unless the amount of the mandatory liquidity fee would be de minimis. The size of the mandatory liquidity fee to be charged will be based on a good faith estimate, supported by data, of the costs the Fund would incur if it sold a pro rata amount of each security in its portfolio to satisfy the amount of the net redemptions. If these costs cannot be determined in good faith, a 1% default fee will be applied. If the amount of the mandatory liquidity fee would be de minimis (i.e., less than 0.01% of the value of the shares redeemed), the Fund is not required to charge a mandatory liquidity fee. In addition, the Fund’s policies and procedures permit the Fund to impose a discretionary liquidity fee on redemptions of up to 2% of the value of the shares redeemed if the adviser, as the delegate of the Board, determines it is in the best interests of the Fund.
Summary of Definition of Rule 35d-1 Term in Fund Name [Text Block] The Fund is a money market fund managed in the following manner: ●The Fund calculates its net asset value to four decimals (e.g., $1.0000) using market-based pricing and operates with a floating net asset value. ●The dollar-weighted average maturity of the Fund will be 60 days or less and the dollar-weighted average life to maturity will be 120 days or less. ●The Fund will only buy securities that have remaining maturities of 397 days or less or securities otherwise permitted to be purchased because of maturity shortening provisions under applicable regulation. ●The Fund invests only in U.S. dollar-denominated securities. ●The Fund seeks to invest in securities that present minimal credit risk.
Summary of Selection Criteria for Rule 35d-1 Term in Fund Name [Text Block] The Fund invests in high quality, short-term money market instruments which are issued and payable in U.S. dollars. The Fund principally invests in: ●high quality commercial paper and other short-term debt securities, including floating and variable rate demand notes of U.S. and foreign corporations, ●debt securities issued or guaranteed by qualified U.S. and foreign banks, including certificates of deposit, time deposits and other short-term securities, ●securities issued or guaranteed by the U.S. government, its agencies or instrumentalities or Government-Sponsored Enterprises (“GSEs”), ●asset-backed securities, ●repurchase agreements, and ●taxable municipal obligations.
Strategy Portfolio Concentration [Text] <span style="color:#000000;font-family:Arial Narrow;font-size:10pt;">The Fund will concentrate its investments in the banking industry. Therefore, under normal conditions, the Fund will invest at least 25% of its total assets in securities issued by </span><span style="color:#000000;font-family:Arial Narrow;font-size:10pt;">companies in the banking industry.</span>
Agency Shares [Member] | JPMorgan 100 U.S. Treasury Securities Money Market Fund  
Prospectus [Line Items]  
Strategy [Heading] <span style="color:#000000;font-family:Arial Narrow;font-size:11pt;font-weight:bold;">The Fund’s Main Investment Strategy</span>
Strategy Narrative [Text Block] Under normal conditions, the Fund invests its assets exclusively in obligations of the U.S. Treasury, including Treasury bills, bonds and notes. These investments carry different interest rates, maturities and issue dates. The interest on these securities is generally exempt from state and local income taxes. Ordinarily, the Fund does not buy securities issued or guaranteed by agencies of the U.S. government.The Fund is a money market fund managed in the following manner: ●The Fund seeks to maintain a net asset value (“NAV”) of $1.00 per share. ●The dollar-weighted average maturity of the Fund will be 60 days or less and the dollar-weighted average life to maturity will be 120 days or less. ●The Fund will only buy securities that have remaining maturities of 397 days or less or securities otherwise permitted to be purchased because of maturity shortening provisions under applicable regulation. ●The Fund seeks to invest in securities that present minimal credit risk. The Fund will generally hold a portion of its assets in cash, primarily to meet redemptions. The Fund intends to continue to qualify as a “government money market fund,” as such term is defined in or interpreted under Rule 2a-7 under the Investment Company Act of 1940, as amended (“Investment Company Act”). “Government money market funds” are required to invest at least 99.5% of their assets in (i) cash, (ii) securities issued or guaranteed by the United States or certain U.S. government agencies or instrumentalities and/or (iii) repurchase agreements that are collateralized fully, and are exempt from requirements that permit money market funds to impose a liquidity fee. While the J.P. Morgan Funds’ Board of Trustees (the “Board”) may elect to subject the Fund to liquidity fee requirements in the future, the Board has not elected to do so at this time. A government money market fund may also include investments in other government money market funds as an eligible investment for purposes of the 99.5% requirement above. The Fund’s adviser seeks to develop an appropriate portfolio by considering the differences in yields among securities of different maturities and issue dates.
Summary of Definition of Rule 35d-1 Term in Fund Name [Text Block] The Fund is a money market fund managed in the following manner: ●The Fund seeks to maintain a net asset value (“NAV”) of $1.00 per share. ●The dollar-weighted average maturity of the Fund will be 60 days or less and the dollar-weighted average life to maturity will be 120 days or less. ●The Fund will only buy securities that have remaining maturities of 397 days or less or securities otherwise permitted to be purchased because of maturity shortening provisions under applicable regulation. ●The Fund seeks to invest in securities that present minimal credit risk. The Fund will generally hold a portion of its assets in cash, primarily to meet redemptions. The Fund intends to continue to qualify as a “government money market fund,” as such term is defined in or interpreted under Rule 2a-7 under the Investment Company Act of 1940, as amended (“Investment Company Act”). “Government money market funds” are required to invest at least 99.5% of their assets in (i) cash, (ii) securities issued or guaranteed by the United States or certain U.S. government agencies or instrumentalities and/or (iii) repurchase agreements that are collateralized fully, and are exempt from requirements that permit money market funds to impose a liquidity fee.
Summary of Selection Criteria for Rule 35d-1 Term in Fund Name [Text Block] Under normal conditions, the Fund invests its assets exclusively in obligations of the U.S. Treasury, including Treasury bills, bonds and notes. These investments carry different interest rates, maturities and issue dates. The interest on these securities is generally exempt from state and local income taxes. Ordinarily, the Fund does not buy securities issued or guaranteed by agencies of the U.S. government.
Agency Shares [Member] | JPMorgan Federal Money Market Fund  
Prospectus [Line Items]  
Strategy [Heading] <span style="color:#000000;font-family:Arial Narrow;font-size:11pt;font-weight:bold;">The Fund’s Main Investment Strategy</span>
Strategy Narrative [Text Block] Under normal conditions, the Fund invests its assets exclusively in: ●obligations of the U.S. Treasury, including Treasury bills, bonds and notes, and ●debt securities that certain U.S. government agencies or instrumentalities have either issued or guaranteed as to principal and interest. The interest on these securities is generally exempt from state and local income taxes.The Fund is a money market fund managed in the following manner: ●The Fund seeks to maintain a net asset value (“NAV”) of $1.00 per share. ●The dollar-weighted average maturity of the Fund will be 60 days or less and the dollar-weighted average life to maturity will be 120 days or less. ●The Fund will only buy securities that have remaining maturities of 397 days or less or securities otherwise permitted to be purchased because of maturity shortening provisions under applicable regulation. ●The Fund invests only in U.S. dollar-denominated securities. ●The Fund seeks to invest in securities that present minimal credit risk. The Fund may invest significantly in securities with floating or variable rates of interest. Their yields will vary as interest rates change. The Fund will generally hold a portion of its assets in cash, primarily to meet redemptions. The Fund intends to continue to qualify as a “government money market fund,” as such term is defined in or interpreted under Rule 2a-7 under the Investment Company Act of 1940, as amended (“Investment Company Act”). “Government money market funds” are required to invest at least 99.5% of their assets in (i) cash, (ii) securities issued or guaranteed by the United States or certain U.S. government agencies or instrumentalities and/or (iii) repurchase agreements that are collateralized fully, and are exempt from requirements that permit money market funds to impose a liquidity fee. While the J.P. Morgan Funds’ Board of Trustees (the “Board”) may elect to subject the Fund to liquidity fee requirements in the future, the Board has not elected to do so at this time. A government money market fund may also include investments in other government money market funds as an eligible investment for purposes of the 99.5% requirement above. The Fund may trade securities on a when-issued, delayed settlement or forward commitment basis. The Fund’s adviser seeks to develop an appropriate portfolio by considering the differences in yields among securities of different maturities, market sectors and issuers.
Summary of Definition of Rule 35d-1 Term in Fund Name [Text Block] The Fund is a money market fund managed in the following manner: ●The Fund seeks to maintain a net asset value (“NAV”) of $1.00 per share. ●The dollar-weighted average maturity of the Fund will be 60 days or less and the dollar-weighted average life to maturity will be 120 days or less. ●The Fund will only buy securities that have remaining maturities of 397 days or less or securities otherwise permitted to be purchased because of maturity shortening provisions under applicable regulation. ●The Fund invests only in U.S. dollar-denominated securities. ●The Fund seeks to invest in securities that present minimal credit risk. The Fund may invest significantly in securities with floating or variable rates of interest. Their yields will vary as interest rates change. The Fund will generally hold a portion of its assets in cash, primarily to meet redemptions. The Fund intends to continue to qualify as a “government money market fund,” as such term is defined in or interpreted under Rule 2a-7 under the Investment Company Act of 1940, as amended (“Investment Company Act”). “Government money market funds” are required to invest at least 99.5% of their assets in (i) cash, (ii) securities issued or guaranteed by the United States or certain U.S. government agencies or instrumentalities and/or (iii) repurchase agreements that are collateralized fully, and are exempt from requirements that permit money market funds to impose a liquidity fee.
Summary of Selection Criteria for Rule 35d-1 Term in Fund Name [Text Block] Under normal conditions, the Fund invests its assets exclusively in: ●obligations of the U.S. Treasury, including Treasury bills, bonds and notes, and ●debt securities that certain U.S. government agencies or instrumentalities have either issued or guaranteed as to principal and interest. The interest on these securities is generally exempt from state and local income taxes.
Agency Shares [Member] | JPMorgan California Municipal Money Market Fund  
Prospectus [Line Items]  
Strategy [Heading] <span style="color:#000000;font-family:Arial Narrow;font-size:11pt;font-weight:bold;">The Fund’s Main Investment Strategy</span>
Strategy Narrative [Text Block] Under normal conditions, the Fund invests primarily in municipal obligations, the interest on which is excluded from gross income for federal income tax purposes, exempt from California personal income taxes and is not subject to the federal alternative minimum tax on individuals.As a fundamental policy, the Fund normally invests at least 80% of the value of its Assets in such municipal obligations. For purposes of this policy, “Assets” means net assets, plus the amount of borrowings for investment purposes. For purposes of the 80% policy above, the Fund will only invest in municipal obligations if the issuer receives assurances from legal counsel that the interest payable on the securities is excluded from gross income for federal income tax purposes, exempt from California personal income taxes and is not subject to the federal alternative minimum tax on individuals. Municipal obligations in which the Fund may invest are securities that are issued by the State of California, its political subdivisions, authorities, and agencies, as well as by Puerto Rico, other U.S. territories and their political subdivisions.The Fund generally invests in short-term money market instruments, such as private activity and industrial development bonds, tax anticipation notes, municipal lease obligations and participations in pools of municipal obligations. In addition to purchasing municipal obligations directly, the Fund may invest in municipal obligations by (1) purchasing instruments evidencing direct ownership of interest payments or principal payments, or both, on municipal obligations, such as tender option bonds, or (2) purchasing participation interests in all or part of specific holdings of municipal obligations, provided that the applicable issuer receives assurances from legal counsel that the interest payable on the securities is excluded from gross income for federal income tax purposes, exempt from California personal income taxes and is not subject to the federal alternative minimum tax on individuals. Up to 20% of the Fund’s total assets may be invested in investments subject to California personal income taxes, or in securities subject to federal income tax or the federal alternative minimum tax, such as taxable money market instruments or repurchase agreements. The Fund is a money market fund managed in the following manner: ●The Fund seeks to maintain a net asset value (“NAV”) of $1.00 per share. ●The dollar-weighted average maturity of the Fund will be 60 days or less and the dollar-weighted average life to maturity will be 120 days or less. ●The Fund will only buy securities that have remaining maturities of 397 days or less or securities otherwise permitted to be purchased because of maturity shortening provisions under applicable regulation. ●The Fund invests only in U.S. dollar-denominated securities. ●The Fund seeks to invest in securities that present minimal credit risk.The Fund may invest significantly in securities with floating or variable rates of interest. Their yields will vary as interest rates change. The Fund will at times hold some of its assets in cash. The Fund’s adviser seeks to develop an appropriate portfolio by considering the differences in yields among securities of different maturities, market sectors and issuers. Applicable Money Market Fund Regulations Under the Securities and Exchange Commission (“SEC”) rules that govern the operation of registered money market funds (“MMFs”), MMFs that qualify as “retail” (“Retail MMFs”) or “government” (“Government MMFs”) are permitted to utilize amortized cost to value their portfolio securities and to transact at their existing $1.00 share price. MMFs that do not qualify as Retail MMFs or Government MMFs (collectively, “Institutional MMFs”) are required to price and transact in their shares at NAV reflecting current market-based values of their portfolio securities (i.e., at a “floating NAV”). The Fund intends to qualify as a Retail MMF. Liquidity Fees The Fund’s policies and procedures permit the Fund to impose a discretionary liquidity fee on redemptions of up to 2% of the value of the shares redeemed if the adviser, as the delegate of the Board, determines it is in the best interests of the Fund. Further Developments The Fund may redeem investors that do not satisfy the eligibility requirements for Retail MMF investors. The Fund will provide advance written notification of its intent to make any such involuntary redemptions to the applicable shareholders, which will include more specific information about timing. Neither the Fund nor the adviser will be responsible for any loss in an investor’s account or tax liability resulting from an involuntary redemption.
Summary of Definition of Rule 35d-1 Term in Fund Name [Text Block] The Fund is a money market fund managed in the following manner: ●The Fund seeks to maintain a net asset value (“NAV”) of $1.00 per share. ●The dollar-weighted average maturity of the Fund will be 60 days or less and the dollar-weighted average life to maturity will be 120 days or less. ●The Fund will only buy securities that have remaining maturities of 397 days or less or securities otherwise permitted to be purchased because of maturity shortening provisions under applicable regulation. ●The Fund invests only in U.S. dollar-denominated securities. ●The Fund seeks to invest in securities that present minimal credit risk.
Summary of Selection Criteria for Rule 35d-1 Term in Fund Name [Text Block] Under normal conditions, the Fund invests primarily in municipal obligations, the interest on which is excluded from gross income for federal income tax purposes, exempt from California personal income taxes and is not subject to the federal alternative minimum tax on individuals.
Rule 35d-1 Eighty Percent Investment Policy [Text Block] As a fundamental policy, the Fund normally invests at least 80% of the value of its Assets in such municipal obligations. For purposes of this policy, “Assets” means net assets, plus the amount of borrowings for investment purposes. For purposes of the 80% policy above, the Fund will only invest in municipal obligations if the issuer receives assurances from legal counsel that the interest payable on the securities is excluded from gross income for federal income tax purposes, exempt from California personal income taxes and is not subject to the federal alternative minimum tax on individuals. Municipal obligations in which the Fund may invest are securities that are issued by the State of California, its political subdivisions, authorities, and agencies, as well as by Puerto Rico, other U.S. territories and their political subdivisions.
Agency Shares [Member] | JPMorgan New York Municipal Money Market Fund  
Prospectus [Line Items]  
Strategy [Heading] <span style="color:#000000;font-family:Arial Narrow;font-size:11pt;font-weight:bold;">The Fund’s Main Investment Strategy</span>
Strategy Narrative [Text Block] Under normal conditions, the Fund invests primarily in municipal obligations, the interest on which is excluded from gross income for federal income tax purposes, exempt from New York State and New York City personal income taxes and is not subject to the federal alternative minimum tax on individuals.As a fundamental policy, the Fund normally invests at least 80% of the value of its Assets in such municipal obligations. For purposes of this policy, “Assets” means net assets, plus the amount of borrowings for investment purposes. For purposes of the 80% policy above, the Fund will only invest in municipal obligations if the issuer receives assurances from legal counsel that the interest payable on the securities is excluded from gross income for federal income tax purposes, exempt from New York State and New York City personal income taxes and is not subject to the federal alternative minimum tax on individuals. Municipal obligations in which the Fund may invest are securities that are issued by the State of New York, its political subdivisions, authorities, and agencies, as well as by Puerto Rico, other U.S. territories and their political subdivisions.The Fund generally invests in short-term money market instruments such as private activity and industrial development bonds, tax anticipation notes, municipal lease obligations and participations in pools of municipal obligations. In addition to purchasing municipal obligations directly, the Fund may invest in municipal obligations by (1) purchasing instruments evidencing direct ownership of interest payments or principal payments, or both, on municipal obligations, such as tender option bonds, or (2) purchasing participation interests in all or part of specific holdings of municipal obligations, provided that the applicable issuer receives assurances from legal counsel that the interest payable on the securities is excluded from gross income for federal income tax purposes, exempt from New York State and New York City personal income taxes and is not subject to the federal alternative minimum tax on individuals. Up to 20% of the Fund’s total assets may be invested in investments subject to New York State and/or City personal income taxes, or in securities subject to federal income tax or the federal alternative minimum tax, such as taxable money market instruments or repurchase agreements. The Fund is a money market fund managed in the following manner: ●The Fund seeks to maintain a net asset value (“NAV”) of $1.00 per share. ●The dollar-weighted average maturity of the Fund will be 60 days or less and the dollar-weighted average life to maturity will be 120 days or less. ●The Fund will only buy securities that have remaining maturities of 397 days or less or securities otherwise permitted to be purchased because of maturity shortening provisions under applicable regulation. ●The Fund invests only in U.S. dollar-denominated securities. ●The Fund seeks to invest in securities that present minimal credit risk.The Fund may invest significantly in securities with floating or variable rates of interest. Their yields will vary as interest rates change. The Fund will at times hold some of its assets in cash. The Fund’s adviser seeks to develop an appropriate portfolio by considering the differences in yields among securities of different maturities, market sectors and issuers. Applicable Money Market Fund Regulations Under the Securities and Exchange Commission (“SEC”) rules that govern the operation of registered money market funds (“MMFs”), MMFs that qualify as “retail” (“Retail MMFs”) or “government” (“Government MMFs”) are permitted to utilize amortized cost to value their portfolio securities and to transact at their existing $1.00 share price. MMFs that do not qualify as Retail MMFs or Government MMFs (collectively, “Institutional MMFs”) are required to price and transact in their shares at NAV reflecting current market-based values of their portfolio securities (i.e., at a “floating NAV”). The Fund intends to qualify as a Retail MMF. Liquidity Fees The Fund’s policies and procedures permit the Fund to impose a discretionary liquidity fee on redemptions of up to 2% of the value of the shares redeemed if the adviser, as the delegate of the Board, determines it is in the best interests of the Fund. Further Developments The Fund may redeem investors that do not satisfy the eligibility requirements for Retail MMF investors. The Fund will provide advance written notification of its intent to make any such involuntary redemptions to the applicable shareholders, which will include more specific information about timing. Neither the Fund nor the adviser will be responsible for any loss in an investor’s account or tax liability resulting from an involuntary redemption.
Summary of Definition of Rule 35d-1 Term in Fund Name [Text Block] The Fund is a money market fund managed in the following manner: ●The Fund seeks to maintain a net asset value (“NAV”) of $1.00 per share. ●The dollar-weighted average maturity of the Fund will be 60 days or less and the dollar-weighted average life to maturity will be 120 days or less. ●The Fund will only buy securities that have remaining maturities of 397 days or less or securities otherwise permitted to be purchased because of maturity shortening provisions under applicable regulation. ●The Fund invests only in U.S. dollar-denominated securities. ●The Fund seeks to invest in securities that present minimal credit risk.
Summary of Selection Criteria for Rule 35d-1 Term in Fund Name [Text Block] Under normal conditions, the Fund invests primarily in municipal obligations, the interest on which is excluded from gross income for federal income tax purposes, exempt from New York State and New York City personal income taxes and is not subject to the federal alternative minimum tax on individuals.
Rule 35d-1 Eighty Percent Investment Policy [Text Block] As a fundamental policy, the Fund normally invests at least 80% of the value of its Assets in such municipal obligations. For purposes of this policy, “Assets” means net assets, plus the amount of borrowings for investment purposes. For purposes of the 80% policy above, the Fund will only invest in municipal obligations if the issuer receives assurances from legal counsel that the interest payable on the securities is excluded from gross income for federal income tax purposes, exempt from New York State and New York City personal income taxes and is not subject to the federal alternative minimum tax on individuals. Municipal obligations in which the Fund may invest are securities that are issued by the State of New York, its political subdivisions, authorities, and agencies, as well as by Puerto Rico, other U.S. territories and their political subdivisions.
Agency Shares [Member] | JPMorgan Tax Free Money Market Fund  
Prospectus [Line Items]  
Strategy [Heading] <span style="color:#000000;font-family:Arial Narrow;font-size:11pt;font-weight:bold;">The Fund’s Main Investment Strategy</span>
Strategy Narrative [Text Block] Under normal conditions, the Fund invests primarily in municipal obligations, the interest on which is excluded from federal income taxes.As a fundamental policy, the Fund will invest at least 80% of the value of its Assets in municipal obligations. For purposes of this policy, “Assets” means net assets, plus the amount of borrowings for investment purposes. Municipal obligations are securities that are issued by or on behalf of states, territories and possessions of the United States, including the District of Columbia, and their respective authorities, agencies and other groups with authority to act for the municipalities. The Fund generally invests in short-term money market instruments such as private activity and industrial development bonds, tax anticipation notes, municipal lease obligations and participations in pools of municipal obligations. For purposes of the 80% policy above, the Fund will only invest in municipal obligations if the issuer receives assurances from legal counsel that the interest payable on the securities is exempt from federal income tax.In addition to purchasing municipal obligations directly, the Fund may invest in municipal obligations by (1) purchasing instruments evidencing direct ownership of interest payments or principal payments, or both, on municipal obligations, such as tender option bonds, or (2) purchasing participation interests in all or part of specific holdings of municipal obligations, provided that the applicable issuer receives assurances from legal counsel that the interest payable on the securities is exempt from federal income tax. The remaining 20% of the Fund’s total assets may be invested in securities subject to federal income tax or the federal alternative minimum tax. The Fund is a money market fund managed in the following manner: ●The Fund seeks to maintain a net asset value (“NAV”) of $1.00 per share. ●The dollar-weighted average maturity of the Fund will be 60 days or less and the dollar-weighted average life to maturity will be 120 days or less. ●The Fund will only buy securities that have remaining maturities of 397 days or less or securities otherwise permitted to be purchased because of maturity shortening provisions under applicable regulation. ●The Fund invests only in U.S. dollar-denominated securities. ●The Fund seeks to invest in securities that present minimal credit risk.The Fund may invest significantly in securities with floating or variable rates of interest. Their yields will vary as interest rates change. The Fund will at times hold some of its assets in cash. The Fund’s adviser seeks to develop an appropriate portfolio by considering the differences in yields among securities of different maturities, market sectors and issuers. Applicable Money Market Fund Regulations Under the Securities and Exchange Commission (“SEC”) rules that govern the operation of registered money market funds (“MMFs”), MMFs that qualify as “retail” (“Retail MMFs”) or “government” (“Government MMFs”) are permitted to utilize amortized cost to value their portfolio securities and to transact at their existing $1.00 share price. MMFs that do not qualify as Retail MMFs or Government MMFs (collectively, “Institutional MMFs”) are required to price and transact in their shares at NAV reflecting current market-based values of their portfolio securities (i.e., at a “floating NAV”). The Fund intends to qualify as a Retail MMF. Liquidity Fees The Fund’s policies and procedures permit the Fund to impose a discretionary liquidity fee on redemptions of up to 2% of the value of the shares redeemed if the adviser, as the delegate of the Board, determines it is in the best interests of the Fund. Further Developments The Fund may redeem investors that do not satisfy the eligibility requirements for Retail MMF investors. The Fund will provide advance written notification of its intent to make any such involuntary redemptions to the applicable shareholders, which will include more specific information about timing. Neither the Fund nor the adviser will be responsible for any loss in an investor’s account or tax liability resulting from an involuntary redemption.
Summary of Definition of Rule 35d-1 Term in Fund Name [Text Block] The Fund is a money market fund managed in the following manner: ●The Fund seeks to maintain a net asset value (“NAV”) of $1.00 per share. ●The dollar-weighted average maturity of the Fund will be 60 days or less and the dollar-weighted average life to maturity will be 120 days or less. ●The Fund will only buy securities that have remaining maturities of 397 days or less or securities otherwise permitted to be purchased because of maturity shortening provisions under applicable regulation. ●The Fund invests only in U.S. dollar-denominated securities. ●The Fund seeks to invest in securities that present minimal credit risk.
Summary of Selection Criteria for Rule 35d-1 Term in Fund Name [Text Block] Under normal conditions, the Fund invests primarily in municipal obligations, the interest on which is excluded from federal income taxes.
Rule 35d-1 Eighty Percent Investment Policy [Text Block] As a fundamental policy, the Fund will invest at least 80% of the value of its Assets in municipal obligations. For purposes of this policy, “Assets” means net assets, plus the amount of borrowings for investment purposes. Municipal obligations are securities that are issued by or on behalf of states, territories and possessions of the United States, including the District of Columbia, and their respective authorities, agencies and other groups with authority to act for the municipalities. The Fund generally invests in short-term money market instruments such as private activity and industrial development bonds, tax anticipation notes, municipal lease obligations and participations in pools of municipal obligations. For purposes of the 80% policy above, the Fund will only invest in municipal obligations if the issuer receives assurances from legal counsel that the interest payable on the securities is exempt from federal income tax.
Capital Shares [Member] | JPMorgan Prime Money Market Fund  
Prospectus [Line Items]  
Strategy [Heading] <span style="color:#000000;font-family:Arial Narrow;font-size:11pt;font-weight:bold;">The Fund’s Main Investment Strategy</span>
Strategy Narrative [Text Block] The Fund invests in high quality, short-term money market instruments which are issued and payable in U.S. dollars. The Fund principally invests in: ●high quality commercial paper and other short-term debt securities, including floating and variable rate demand notes of U.S. and foreign corporations, ●debt securities issued or guaranteed by qualified U.S. and foreign banks, including certificates of deposit, time deposits and other short-term securities, ●securities issued or guaranteed by the U.S. government, its agencies or instrumentalities or Government-Sponsored Enterprises (“GSEs”), ●asset-backed securities, ●repurchase agreements, and ●taxable municipal obligations.The Fund is a money market fund managed in the following manner: ●The Fund calculates its net asset value to four decimals (e.g., $1.0000) using market-based pricing and operates with a floating net asset value. ●The dollar-weighted average maturity of the Fund will be 60 days or less and the dollar-weighted average life to maturity will be 120 days or less. ●The Fund will only buy securities that have remaining maturities of 397 days or less or securities otherwise permitted to be purchased because of maturity shortening provisions under applicable regulation. ●The Fund invests only in U.S. dollar-denominated securities. ●The Fund seeks to invest in securities that present minimal credit risk.The Fund may invest significantly in securities with floating or variable rates of interest. Their yields will vary as interest rates change. The securities in which the Fund may invest include privately placed securities. The Fund will generally hold a portion of its assets in cash, primarily to meet redemptions. The Fund will concentrate its investments in the banking industry. Therefore, under normal conditions, the Fund will invest at least 25% of its total assets in securities issued by companies in the banking industry. The Fund may, however, invest less than 25% of its total assets in this industry as a temporary defensive measure. The Fund may trade securities on a when-issued, delayed settlement or forward commitment basis. The Fund’s adviser seeks to develop an appropriate portfolio by considering the differences in yields among securities of different maturities, market sectors and issuers. Liquidity Fees The Fund’s policies and procedures require the Fund to impose a mandatory liquidity fee if the Fund experiences total daily net redemptions (based on flow information available within a reasonable period after the last computation of the Fund’s net asset value on that day) exceeding 5% of net assets, unless the amount of the mandatory liquidity fee would be de minimis. The size of the mandatory liquidity fee to be charged will be based on a good faith estimate, supported by data, of the costs the Fund would incur if it sold a pro rata amount of each security in its portfolio to satisfy the amount of the net redemptions. If these costs cannot be determined in good faith, a 1% default fee will be applied. If the amount of the mandatory liquidity fee would be de minimis (i.e., less than 0.01% of the value of the shares redeemed), the Fund is not required to charge a mandatory liquidity fee. In addition, the Fund’s policies and procedures permit the Fund to impose a discretionary liquidity fee on redemptions of up to 2% of the value of the shares redeemed if the adviser, as the delegate of the Board, determines it is in the best interests of the Fund.
Summary of Definition of Rule 35d-1 Term in Fund Name [Text Block] The Fund is a money market fund managed in the following manner: ●The Fund calculates its net asset value to four decimals (e.g., $1.0000) using market-based pricing and operates with a floating net asset value. ●The dollar-weighted average maturity of the Fund will be 60 days or less and the dollar-weighted average life to maturity will be 120 days or less. ●The Fund will only buy securities that have remaining maturities of 397 days or less or securities otherwise permitted to be purchased because of maturity shortening provisions under applicable regulation. ●The Fund invests only in U.S. dollar-denominated securities. ●The Fund seeks to invest in securities that present minimal credit risk.
Summary of Selection Criteria for Rule 35d-1 Term in Fund Name [Text Block] The Fund invests in high quality, short-term money market instruments which are issued and payable in U.S. dollars. The Fund principally invests in: ●high quality commercial paper and other short-term debt securities, including floating and variable rate demand notes of U.S. and foreign corporations, ●debt securities issued or guaranteed by qualified U.S. and foreign banks, including certificates of deposit, time deposits and other short-term securities, ●securities issued or guaranteed by the U.S. government, its agencies or instrumentalities or Government-Sponsored Enterprises (“GSEs”), ●asset-backed securities, ●repurchase agreements, and ●taxable municipal obligations.
Strategy Portfolio Concentration [Text] <span style="color:#000000;font-family:Arial Narrow;font-size:10pt;">The Fund will concentrate its investments in the banking industry. Therefore, under normal conditions, the Fund will invest at least 25% of its total assets in securities issued by companies in the banking industry.</span>
Capital Shares [Member] | JPMorgan 100 U.S. Treasury Securities Money Market Fund  
Prospectus [Line Items]  
Strategy [Heading] <span style="color:#000000;font-family:Arial Narrow;font-size:11pt;font-weight:bold;">The Fund’s Main Investment Strategy</span>
Strategy Narrative [Text Block] Under normal conditions, the Fund invests its assets exclusively in obligations of the U.S. Treasury, including Treasury bills, bonds and notes. These investments carry different interest rates, maturities and issue dates. The interest on these securities is generally exempt from state and local income taxes. Ordinarily, the Fund does not buy securities issued or guaranteed by agencies of the U.S. government.The Fund is a money market fund managed in the following manner: ●The Fund seeks to maintain a net asset value (“NAV”) of $1.00 per share. ●The dollar-weighted average maturity of the Fund will be 60 days or less and the dollar-weighted average life to maturity will be 120 days or less. ●The Fund will only buy securities that have remaining maturities of 397 days or less or securities otherwise permitted to be purchased because of maturity shortening provisions under applicable regulation. ●The Fund seeks to invest in securities that present minimal credit risk. The Fund will generally hold a portion of its assets in cash, primarily to meet redemptions. The Fund intends to continue to qualify as a “government money market fund,” as such term is defined in or interpreted under Rule 2a-7 under the Investment Company Act of 1940, as amended (“Investment Company Act”). “Government money market funds” are required to invest at least 99.5% of their assets in (i) cash, (ii) securities issued or guaranteed by the United States or certain U.S. government agencies or instrumentalities and/or (iii) repurchase agreements that are collateralized fully, and are exempt from requirements that permit money market funds to impose a liquidity fee. While the J.P. Morgan Funds’ Board of Trustees (the “Board”) may elect to subject the Fund to liquidity fee requirements in the future, the Board has not elected to do so at this time. A government money market fund may also include investments in other government money market funds as an eligible investment for purposes of the 99.5% requirement above. The Fund’s adviser seeks to develop an appropriate portfolio by considering the differences in yields among securities of different maturities and issue dates.
Summary of Definition of Rule 35d-1 Term in Fund Name [Text Block] The Fund is a money market fund managed in the following manner: ●The Fund seeks to maintain a net asset value (“NAV”) of $1.00 per share. ●The dollar-weighted average maturity of the Fund will be 60 days or less and the dollar-weighted average life to maturity will be 120 days or less. ●The Fund will only buy securities that have remaining maturities of 397 days or less or securities otherwise permitted to be purchased because of maturity shortening provisions under applicable regulation. ●The Fund seeks to invest in securities that present minimal credit risk. The Fund will generally hold a portion of its assets in cash, primarily to meet redemptions. The Fund intends to continue to qualify as a “government money market fund,” as such term is defined in or interpreted under Rule 2a-7 under the Investment Company Act of 1940, as amended (“Investment Company Act”). “Government money market funds” are required to invest at least 99.5% of their assets in (i) cash, (ii) securities issued or guaranteed by the United States or certain U.S. government agencies or instrumentalities and/or (iii) repurchase agreements that are collateralized fully, and are exempt from requirements that permit money market funds to impose a liquidity fee.
Summary of Selection Criteria for Rule 35d-1 Term in Fund Name [Text Block] Under normal conditions, the Fund invests its assets exclusively in obligations of the U.S. Treasury, including Treasury bills, bonds and notes. These investments carry different interest rates, maturities and issue dates. The interest on these securities is generally exempt from state and local income taxes. Ordinarily, the Fund does not buy securities issued or guaranteed by agencies of the U.S. government.
Capital Shares [Member] | JPMorgan Federal Money Market Fund  
Prospectus [Line Items]  
Strategy [Heading] <span style="color:#000000;font-family:Arial Narrow;font-size:11pt;font-weight:bold;">The Fund’s Main Investment Strategy</span>
Strategy Narrative [Text Block] Under normal conditions, the Fund invests its assets exclusively in: ●obligations of the U.S. Treasury, including Treasury bills, bonds and notes, and ●debt securities that certain U.S. government agencies or instrumentalities have either issued or guaranteed as to principal and interest. The interest on these securities is generally exempt from state and local income taxes.The Fund is a money market fund managed in the following manner: ●The Fund seeks to maintain a net asset value (“NAV”) of $1.00 per share. ●The dollar-weighted average maturity of the Fund will be 60 days or less and the dollar-weighted average life to maturity will be 120 days or less. ●The Fund will only buy securities that have remaining maturities of 397 days or less or securities otherwise permitted to be purchased because of maturity shortening provisions under applicable regulation. ●The Fund invests only in U.S. dollar-denominated securities. ●The Fund seeks to invest in securities that present minimal credit risk. The Fund may invest significantly in securities with floating or variable rates of interest. Their yields will vary as interest rates change. The Fund will generally hold a portion of its assets in cash, primarily to meet redemptions. The Fund intends to continue to qualify as a “government money market fund,” as such term is defined in or interpreted under Rule 2a-7 under the Investment Company Act of 1940, as amended (“Investment Company Act”). “Government money market funds” are required to invest at least 99.5% of their assets in (i) cash, (ii) securities issued or guaranteed by the United States or certain U.S. government agencies or instrumentalities and/or (iii) repurchase agreements that are collateralized fully, and are exempt from requirements that permit money market funds to impose a liquidity fee. While the J.P. Morgan Funds’ Board of Trustees (the “Board”) may elect to subject the Fund to liquidity fee requirements in the future, the Board has not elected to do so at this time. A government money market fund may also include investments in other government money market funds as an eligible investment for purposes of the 99.5% requirement above. The Fund may trade securities on a when-issued, delayed settlement or forward commitment basis. The Fund’s adviser seeks to develop an appropriate portfolio by considering the differences in yields among securities of different maturities, market sectors and issuers.
Summary of Definition of Rule 35d-1 Term in Fund Name [Text Block] The Fund is a money market fund managed in the following manner: ●The Fund seeks to maintain a net asset value (“NAV”) of $1.00 per share. ●The dollar-weighted average maturity of the Fund will be 60 days or less and the dollar-weighted average life to maturity will be 120 days or less. ●The Fund will only buy securities that have remaining maturities of 397 days or less or securities otherwise permitted to be purchased because of maturity shortening provisions under applicable regulation. ●The Fund invests only in U.S. dollar-denominated securities. ●The Fund seeks to invest in securities that present minimal credit risk. The Fund may invest significantly in securities with floating or variable rates of interest. Their yields will vary as interest rates change. The Fund will generally hold a portion of its assets in cash, primarily to meet redemptions. The Fund intends to continue to qualify as a “government money market fund,” as such term is defined in or interpreted under Rule 2a-7 under the Investment Company Act of 1940, as amended (“Investment Company Act”). “Government money market funds” are required to invest at least 99.5% of their assets in (i) cash, (ii) securities issued or guaranteed by the United States or certain U.S. government agencies or instrumentalities and/or (iii) repurchase agreements that are collateralized fully, and are exempt from requirements that permit money market funds to impose a liquidity fee.
Summary of Selection Criteria for Rule 35d-1 Term in Fund Name [Text Block] Under normal conditions, the Fund invests its assets exclusively in: ●obligations of the U.S. Treasury, including Treasury bills, bonds and notes, and ●debt securities that certain U.S. government agencies or instrumentalities have either issued or guaranteed as to principal and interest. The interest on these securities is generally exempt from state and local income taxes.
Empower Shares [Member] | JPMorgan Prime Money Market Fund  
Prospectus [Line Items]  
Strategy [Heading] <span style="color:#000000;font-family:Arial Narrow;font-size:11pt;font-weight:bold;">The Fund’s Main Investment Strategy</span>
Strategy Narrative [Text Block] The Fund invests in high quality, short-term money market instruments which are issued and payable in U.S. dollars. The Fund principally invests in: ●high quality commercial paper and other short-term debt securities, including floating and variable rate demand notes of U.S. and foreign corporations, ●debt securities issued or guaranteed by qualified U.S. and foreign banks, including certificates of deposit, time deposits and other short-term securities, ●securities issued or guaranteed by the U.S. government, its agencies or instrumentalities or Government-Sponsored Enterprises (“GSEs”), ●asset-backed securities, ●repurchase agreements, and ●taxable municipal obligations.The Fund is a money market fund managed in the following manner: ●The Fund calculates its net asset value to four decimals (e.g., $1.0000) using market-based pricing and operates with a floating net asset value. ●The dollar-weighted average maturity of the Fund will be 60 days or less and the dollar-weighted average life to maturity will be 120 days or less. ●The Fund will only buy securities that have remaining maturities of 397 days or less or securities otherwise permitted to be purchased because of maturity shortening provisions under applicable regulation. ●The Fund invests only in U.S. dollar-denominated securities. ●The Fund seeks to invest in securities that present minimal credit risk.The Fund may invest significantly in securities with floating or variable rates of interest. Their yields will vary as interest rates change. The securities in which the Fund may invest include privately placed securities. The Fund will generally hold a portion of its assets in cash, primarily to meet redemptions. The Fund will concentrate its investments in the banking industry. Therefore, under normal conditions, the Fund will invest at least 25% of its total assets in securities issued by companies in the banking industry. The Fund may, however, invest less than 25% of its total assets in this industry as a temporary defensive measure. The Fund may trade securities on a when-issued, delayed settlement or forward commitment basis. The Fund’s adviser seeks to develop an appropriate portfolio by considering the differences in yields among securities of different maturities, market sectors and issuers. Liquidity Fees The Fund’s policies and procedures require the Fund to impose a mandatory liquidity fee if the Fund experiences total daily net redemptions (based on flow information available within a reasonable period after the last computation of the Fund’s net asset value on that day) exceeding 5% of net assets, unless the amount of the mandatory liquidity fee would be de minimis. The size of the mandatory liquidity fee to be charged will be based on a good faith estimate, supported by data, of the costs the Fund would incur if it sold a pro rata amount of each security in its portfolio to satisfy the amount of the net redemptions. If these costs cannot be determined in good faith, a 1% default fee will be applied. If the amount of the mandatory liquidity fee would be de minimis (i.e., less than 0.01% of the value of the shares redeemed), the Fund is not required to charge a mandatory liquidity fee. In addition, the Fund’s policies and procedures permit the Fund to impose a discretionary liquidity fee on redemptions of up to 2% of the value of the shares redeemed if the adviser, as the delegate of the Board, determines it is in the best interests of the Fund.
Summary of Definition of Rule 35d-1 Term in Fund Name [Text Block] The Fund is a money market fund managed in the following manner: ●The Fund calculates its net asset value to four decimals (e.g., $1.0000) using market-based pricing and operates with a floating net asset value. ●The dollar-weighted average maturity of the Fund will be 60 days or less and the dollar-weighted average life to maturity will be 120 days or less. ●The Fund will only buy securities that have remaining maturities of 397 days or less or securities otherwise permitted to be purchased because of maturity shortening provisions under applicable regulation. ●The Fund invests only in U.S. dollar-denominated securities. ●The Fund seeks to invest in securities that present minimal credit risk.
Summary of Selection Criteria for Rule 35d-1 Term in Fund Name [Text Block] The Fund invests in high quality, short-term money market instruments which are issued and payable in U.S. dollars. The Fund principally invests in: ●high quality commercial paper and other short-term debt securities, including floating and variable rate demand notes of U.S. and foreign corporations, ●debt securities issued or guaranteed by qualified U.S. and foreign banks, including certificates of deposit, time deposits and other short-term securities, ●securities issued or guaranteed by the U.S. government, its agencies or instrumentalities or Government-Sponsored Enterprises (“GSEs”), ●asset-backed securities, ●repurchase agreements, and ●taxable municipal obligations.
Strategy Portfolio Concentration [Text] <span style="color:#000000;font-family:Arial Narrow;font-size:10pt;">The Fund will concentrate its investments in the banking industry. Therefore, under normal conditions, the Fund will invest at least 25% of its total assets in securities issued by companies in the banking industry.</span>
Empower Shares [Member] | JPMorgan 100 U.S. Treasury Securities Money Market Fund  
Prospectus [Line Items]  
Strategy [Heading] <span style="color:#000000;font-family:Arial Narrow;font-size:11pt;font-weight:bold;">The Fund’s Main Investment Strategy</span>
Strategy Narrative [Text Block] Under normal conditions, the Fund invests its assets exclusively in obligations of the U.S. Treasury, including Treasury bills, bonds and notes. These investments carry different interest rates, maturities and issue dates. The interest on these securities is generally exempt from state and local income taxes. Ordinarily, the Fund does not buy securities issued or guaranteed by agencies of the U.S. government.The Fund is a money market fund managed in the following manner: ●The Fund seeks to maintain a net asset value (“NAV”) of $1.00 per share. ●The dollar-weighted average maturity of the Fund will be 60 days or less and the dollar-weighted average life to maturity will be 120 days or less. ●The Fund will only buy securities that have remaining maturities of 397 days or less or securities otherwise permitted to be purchased because of maturity shortening provisions under applicable regulation. ●The Fund seeks to invest in securities that present minimal credit risk. The Fund will generally hold a portion of its assets in cash, primarily to meet redemptions. The Fund intends to continue to qualify as a “government money market fund,” as such term is defined in or interpreted under Rule 2a-7 under the Investment Company Act of 1940, as amended (“Investment Company Act”). “Government money market funds” are required to invest at least 99.5% of their assets in (i) cash, (ii) securities issued or guaranteed by the United States or certain U.S. government agencies or instrumentalities and/or (iii) repurchase agreements that are collateralized fully, and are exempt from requirements that permit money market funds to impose a liquidity fee. While the J.P. Morgan Funds’ Board of Trustees (the “Board”) may elect to subject the Fund to liquidity fee requirements in the future, the Board has not elected to do so at this time. A government money market fund may also include investments in other government money market funds as an eligible investment for purposes of the 99.5% requirement above. The Fund’s adviser seeks to develop an appropriate portfolio by considering the differences in yields among securities of different maturities and issue dates.
Summary of Definition of Rule 35d-1 Term in Fund Name [Text Block] The Fund is a money market fund managed in the following manner: ●The Fund seeks to maintain a net asset value (“NAV”) of $1.00 per share. ●The dollar-weighted average maturity of the Fund will be 60 days or less and the dollar-weighted average life to maturity will be 120 days or less. ●The Fund will only buy securities that have remaining maturities of 397 days or less or securities otherwise permitted to be purchased because of maturity shortening provisions under applicable regulation. ●The Fund seeks to invest in securities that present minimal credit risk. The Fund will generally hold a portion of its assets in cash, primarily to meet redemptions. The Fund intends to continue to qualify as a “government money market fund,” as such term is defined in or interpreted under Rule 2a-7 under the Investment Company Act of 1940, as amended (“Investment Company Act”). “Government money market funds” are required to invest at least 99.5% of their assets in (i) cash, (ii) securities issued or guaranteed by the United States or certain U.S. government agencies or instrumentalities and/or (iii) repurchase agreements that are collateralized fully, and are exempt from requirements that permit money market funds to impose a liquidity fee.
Summary of Selection Criteria for Rule 35d-1 Term in Fund Name [Text Block] Under normal conditions, the Fund invests its assets exclusively in obligations of the U.S. Treasury, including Treasury bills, bonds and notes. These investments carry different interest rates, maturities and issue dates. The interest on these securities is generally exempt from state and local income taxes. Ordinarily, the Fund does not buy securities issued or guaranteed by agencies of the U.S. government.
IM Shares [Member] | JPMorgan Prime Money Market Fund  
Prospectus [Line Items]  
Strategy [Heading] <span style="color:#000000;font-family:Arial Narrow;font-size:11pt;font-weight:bold;">The Fund’s Main Investment Strategy</span>
Strategy Narrative [Text Block] The Fund invests in high quality, short-term money market instruments which are issued and payable in U.S. dollars. The Fund principally invests in: ●high quality commercial paper and other short-term debt securities, including floating and variable rate demand notes of U.S. and foreign corporations, ●debt securities issued or guaranteed by qualified U.S. and foreign banks, including certificates of deposit, time deposits and other short-term securities, ●securities issued or guaranteed by the U.S. government, its agencies or instrumentalities or Government-Sponsored Enterprises (“GSEs”), ●asset-backed securities, ●repurchase agreements, and ●taxable municipal obligations.The Fund is a money market fund managed in the following manner: ●The Fund calculates its net asset value to four decimals (e.g., $1.0000) using market-based pricing and operates with a floating net asset value. ●The dollar-weighted average maturity of the Fund will be 60 days or less and the dollar-weighted average life to maturity will be 120 days or less. ●The Fund will only buy securities that have remaining maturities of 397 days or less or securities otherwise permitted to be purchased because of maturity shortening provisions under applicable regulation. ●The Fund invests only in U.S. dollar-denominated securities. ●The Fund seeks to invest in securities that present minimal credit risk.The Fund may invest significantly in securities with floating or variable rates of interest. Their yields will vary as interest rates change. The securities in which the Fund may invest include privately placed securities. The Fund will generally hold a portion of its assets in cash, primarily to meet redemptions. The Fund will concentrate its investments in the banking industry. Therefore, under normal conditions, the Fund will invest at least 25% of its total assets in securities issued by companies in the banking industry. The Fund may, however, invest less than 25% of its total assets in this industry as a temporary defensive measure. The Fund may trade securities on a when-issued, delayed settlement or forward commitment basis. The Fund’s adviser seeks to develop an appropriate portfolio by considering the differences in yields among securities of different maturities, market sectors and issuers. Liquidity Fees The Fund’s policies and procedures require the Fund to impose a mandatory liquidity fee if the Fund experiences total daily net redemptions (based on flow information available within a reasonable period after the last computation of the Fund’s net asset value on that day) exceeding 5% of net assets, unless the amount of the mandatory liquidity fee would be de minimis. The size of the mandatory liquidity fee to be charged will be based on a good faith estimate, supported by data, of the costs the Fund would incur if it sold a pro rata amount of each security in its portfolio to satisfy the amount of the net redemptions. If these costs cannot be determined in good faith, a 1% default fee will be applied. If the amount of the mandatory liquidity fee would be de minimis (i.e., less than 0.01% of the value of the shares redeemed), the Fund is not required to charge a mandatory liquidity fee. In addition, the Fund’s policies and procedures permit the Fund to impose a discretionary liquidity fee on redemptions of up to 2% of the value of the shares redeemed if the adviser, as the delegate of the Board, determines it is in the best interests of the Fund.
Summary of Definition of Rule 35d-1 Term in Fund Name [Text Block] The Fund is a money market fund managed in the following manner: ●The Fund calculates its net asset value to four decimals (e.g., $1.0000) using market-based pricing and operates with a floating net asset value. ●The dollar-weighted average maturity of the Fund will be 60 days or less and the dollar-weighted average life to maturity will be 120 days or less. ●The Fund will only buy securities that have remaining maturities of 397 days or less or securities otherwise permitted to be purchased because of maturity shortening provisions under applicable regulation. ●The Fund invests only in U.S. dollar-denominated securities. ●The Fund seeks to invest in securities that present minimal credit risk.
Summary of Selection Criteria for Rule 35d-1 Term in Fund Name [Text Block] The Fund invests in high quality, short-term money market instruments which are issued and payable in U.S. dollars. The Fund principally invests in: ●high quality commercial paper and other short-term debt securities, including floating and variable rate demand notes of U.S. and foreign corporations, ●debt securities issued or guaranteed by qualified U.S. and foreign banks, including certificates of deposit, time deposits and other short-term securities, ●securities issued or guaranteed by the U.S. government, its agencies or instrumentalities or Government-Sponsored Enterprises (“GSEs”), ●asset-backed securities, ●repurchase agreements, and ●taxable municipal obligations.
Strategy Portfolio Concentration [Text] <span style="color:#000000;font-family:Arial Narrow;font-size:10pt;">The Fund will concentrate its investments in the banking industry. Therefore, under normal conditions, the Fund will invest at least 25% of its total assets in securities issued by companies in the banking industry.</span>
IM Shares [Member] | JPMorgan 100 U.S. Treasury Securities Money Market Fund  
Prospectus [Line Items]  
Strategy [Heading] <span style="color:#000000;font-family:Arial Narrow;font-size:11pt;font-weight:bold;">The Fund’s Main Investment Strategy</span>
Strategy Narrative [Text Block] Under normal conditions, the Fund invests its assets exclusively in obligations of the U.S. Treasury, including Treasury bills, bonds and notes. These investments carry different interest rates, maturities and issue dates. The interest on these securities is generally exempt from state and local income taxes. Ordinarily, the Fund does not buy securities issued or guaranteed by agencies of the U.S. government.The Fund is a money market fund managed in the following manner: ●The Fund seeks to maintain a net asset value (“NAV”) of $1.00 per share. ●The dollar-weighted average maturity of the Fund will be 60 days or less and the dollar-weighted average life to maturity will be 120 days or less. ●The Fund will only buy securities that have remaining maturities of 397 days or less or securities otherwise permitted to be purchased because of maturity shortening provisions under applicable regulation. ●The Fund seeks to invest in securities that present minimal credit risk. The Fund will generally hold a portion of its assets in cash, primarily to meet redemptions. The Fund intends to continue to qualify as a “government money market fund,” as such term is defined in or interpreted under Rule 2a-7 under the Investment Company Act of 1940, as amended (“Investment Company Act”). “Government money market funds” are required to invest at least 99.5% of their assets in (i) cash, (ii) securities issued or guaranteed by the United States or certain U.S. government agencies or instrumentalities and/or (iii) repurchase agreements that are collateralized fully, and are exempt from requirements that permit money market funds to impose a liquidity fee. While the J.P. Morgan Funds’ Board of Trustees (the “Board”) may elect to subject the Fund to liquidity fee requirements in the future, the Board has not elected to do so at this time. A government money market fund may also include investments in other government money market funds as an eligible investment for purposes of the 99.5% requirement above. The Fund’s adviser seeks to develop an appropriate portfolio by considering the differences in yields among securities of different maturities and issue dates.
Summary of Definition of Rule 35d-1 Term in Fund Name [Text Block] The Fund is a money market fund managed in the following manner: ●The Fund seeks to maintain a net asset value (“NAV”) of $1.00 per share. ●The dollar-weighted average maturity of the Fund will be 60 days or less and the dollar-weighted average life to maturity will be 120 days or less. ●The Fund will only buy securities that have remaining maturities of 397 days or less or securities otherwise permitted to be purchased because of maturity shortening provisions under applicable regulation. ●The Fund seeks to invest in securities that present minimal credit risk. The Fund will generally hold a portion of its assets in cash, primarily to meet redemptions. The Fund intends to continue to qualify as a “government money market fund,” as such term is defined in or interpreted under Rule 2a-7 under the Investment Company Act of 1940, as amended (“Investment Company Act”). “Government money market funds” are required to invest at least 99.5% of their assets in (i) cash, (ii) securities issued or guaranteed by the United States or certain U.S. government agencies or instrumentalities and/or (iii) repurchase agreements that are collateralized fully, and are exempt from requirements that permit money market funds to impose a liquidity fee.
Summary of Selection Criteria for Rule 35d-1 Term in Fund Name [Text Block] Under normal conditions, the Fund invests its assets exclusively in obligations of the U.S. Treasury, including Treasury bills, bonds and notes. These investments carry different interest rates, maturities and issue dates. The interest on these securities is generally exempt from state and local income taxes. Ordinarily, the Fund does not buy securities issued or guaranteed by agencies of the U.S. government.
Institutional Shares [Member] | JPMorgan Prime Money Market Fund  
Prospectus [Line Items]  
Strategy [Heading] <span style="color:#000000;font-family:Arial Narrow;font-size:11pt;font-weight:bold;">The Fund’s Main Investment Strategy</span>
Strategy Narrative [Text Block] The Fund invests in high quality, short-term money market instruments which are issued and payable in U.S. dollars. The Fund principally invests in: ●high quality commercial paper and other short-term debt securities, including floating and variable rate demand notes of U.S. and foreign corporations, ●debt securities issued or guaranteed by qualified U.S. and foreign banks, including certificates of deposit, time deposits and other short-term securities, ●securities issued or guaranteed by the U.S. government, its agencies or instrumentalities or Government-Sponsored Enterprises (“GSEs”), ●asset-backed securities, ●repurchase agreements, and ●taxable municipal obligations.The Fund is a money market fund managed in the following manner: ●The Fund calculates its net asset value to four decimals (e.g., $1.0000) using market-based pricing and operates with a floating net asset value. ●The dollar-weighted average maturity of the Fund will be 60 days or less and the dollar-weighted average life to maturity will be 120 days or less. ●The Fund will only buy securities that have remaining maturities of 397 days or less or securities otherwise permitted to be purchased because of maturity shortening provisions under applicable regulation. ●The Fund invests only in U.S. dollar-denominated securities. ●The Fund seeks to invest in securities that present minimal credit risk.The Fund may invest significantly in securities with floating or variable rates of interest. Their yields will vary as interest rates change. The securities in which the Fund may invest include privately placed securities. The Fund will generally hold a portion of its assets in cash, primarily to meet redemptions. The Fund will concentrate its investments in the banking industry. Therefore, under normal conditions, the Fund will invest at least 25% of its total assets in securities issued by companies in the banking industry. The Fund may, however, invest less than 25% of its total assets in this industry as a temporary defensive measure. The Fund may trade securities on a when-issued, delayed settlement or forward commitment basis. The Fund’s adviser seeks to develop an appropriate portfolio by considering the differences in yields among securities of different maturities, market sectors and issuers. Liquidity Fees The Fund’s policies and procedures require the Fund to impose a mandatory liquidity fee if the Fund experiences total daily net redemptions (based on flow information available within a reasonable period after the last computation of the Fund’s net asset value on that day) exceeding 5% of net assets, unless the amount of the mandatory liquidity fee would be de minimis. The size of the mandatory liquidity fee to be charged will be based on a good faith estimate, supported by data, of the costs the Fund would incur if it sold a pro rata amount of each security in its portfolio to satisfy the amount of the net redemptions. If these costs cannot be determined in good faith, a 1% default fee will be applied. If the amount of the mandatory liquidity fee would be de minimis (i.e., less than 0.01% of the value of the shares redeemed), the Fund is not required to charge a mandatory liquidity fee. In addition, the Fund’s policies and procedures permit the Fund to impose a discretionary liquidity fee on redemptions of up to 2% of the value of the shares redeemed if the adviser, as the delegate of the Board, determines it is in the best interests of the Fund.
Summary of Definition of Rule 35d-1 Term in Fund Name [Text Block] The Fund is a money market fund managed in the following manner: ●The Fund calculates its net asset value to four decimals (e.g., $1.0000) using market-based pricing and operates with a floating net asset value. ●The dollar-weighted average maturity of the Fund will be 60 days or less and the dollar-weighted average life to maturity will be 120 days or less. ●The Fund will only buy securities that have remaining maturities of 397 days or less or securities otherwise permitted to be purchased because of maturity shortening provisions under applicable regulation. ●The Fund invests only in U.S. dollar-denominated securities. ●The Fund seeks to invest in securities that present minimal credit risk.
Summary of Selection Criteria for Rule 35d-1 Term in Fund Name [Text Block] The Fund invests in high quality, short-term money market instruments which are issued and payable in U.S. dollars. The Fund principally invests in: ●high quality commercial paper and other short-term debt securities, including floating and variable rate demand notes of U.S. and foreign corporations, ●debt securities issued or guaranteed by qualified U.S. and foreign banks, including certificates of deposit, time deposits and other short-term securities, ●securities issued or guaranteed by the U.S. government, its agencies or instrumentalities or Government-Sponsored Enterprises (“GSEs”), ●asset-backed securities, ●repurchase agreements, and ●taxable municipal obligations.
Strategy Portfolio Concentration [Text] <span style="color:#000000;font-family:Arial Narrow;font-size:10pt;">The Fund will concentrate its investments in the banking industry. Therefore, under normal conditions, the Fund will invest at least 25% of its total assets in securities issued by </span><span style="color:#000000;font-family:Arial Narrow;font-size:10pt;">companies in the banking industry.</span>
Institutional Shares [Member] | JPMorgan 100 U.S. Treasury Securities Money Market Fund  
Prospectus [Line Items]  
Strategy [Heading] <span style="color:#000000;font-family:Arial Narrow;font-size:11pt;font-weight:bold;">The Fund’s Main Investment Strategy</span>
Strategy Narrative [Text Block] Under normal conditions, the Fund invests its assets exclusively in obligations of the U.S. Treasury, including Treasury bills, bonds and notes. These investments carry different interest rates, maturities and issue dates. The interest on these securities is generally exempt from state and local income taxes. Ordinarily, the Fund does not buy securities issued or guaranteed by agencies of the U.S. government.The Fund is a money market fund managed in the following manner: ●The Fund seeks to maintain a net asset value (“NAV”) of $1.00 per share. ●The dollar-weighted average maturity of the Fund will be 60 days or less and the dollar-weighted average life to maturity will be 120 days or less. ●The Fund will only buy securities that have remaining maturities of 397 days or less or securities otherwise permitted to be purchased because of maturity shortening provisions under applicable regulation. ●The Fund seeks to invest in securities that present minimal credit risk. The Fund will generally hold a portion of its assets in cash, primarily to meet redemptions. The Fund intends to continue to qualify as a “government money market fund,” as such term is defined in or interpreted under Rule 2a-7 under the Investment Company Act of 1940, as amended (“Investment Company Act”). “Government money market funds” are required to invest at least 99.5% of their assets in (i) cash, (ii) securities issued or guaranteed by the United States or certain U.S. government agencies or instrumentalities and/or (iii) repurchase agreements that are collateralized fully, and are exempt from requirements that permit money market funds to impose a liquidity fee. While the J.P. Morgan Funds’ Board of Trustees (the “Board”) may elect to subject the Fund to liquidity fee requirements in the future, the Board has not elected to do so at this time. A government money market fund may also include investments in other government money market funds as an eligible investment for purposes of the 99.5% requirement above. The Fund’s adviser seeks to develop an appropriate portfolio by considering the differences in yields among securities of different maturities and issue dates.
Summary of Definition of Rule 35d-1 Term in Fund Name [Text Block] The Fund is a money market fund managed in the following manner: ●The Fund seeks to maintain a net asset value (“NAV”) of $1.00 per share. ●The dollar-weighted average maturity of the Fund will be 60 days or less and the dollar-weighted average life to maturity will be 120 days or less. ●The Fund will only buy securities that have remaining maturities of 397 days or less or securities otherwise permitted to be purchased because of maturity shortening provisions under applicable regulation. ●The Fund seeks to invest in securities that present minimal credit risk. The Fund will generally hold a portion of its assets in cash, primarily to meet redemptions. The Fund intends to continue to qualify as a “government money market fund,” as such term is defined in or interpreted under Rule 2a-7 under the Investment Company Act of 1940, as amended (“Investment Company Act”). “Government money market funds” are required to invest at least 99.5% of their assets in (i) cash, (ii) securities issued or guaranteed by the United States or certain U.S. government agencies or instrumentalities and/or (iii) repurchase agreements that are collateralized fully, and are exempt from requirements that permit money market funds to impose a liquidity fee.
Summary of Selection Criteria for Rule 35d-1 Term in Fund Name [Text Block] Under normal conditions, the Fund invests its assets exclusively in obligations of the U.S. Treasury, including Treasury bills, bonds and notes. These investments carry different interest rates, maturities and issue dates. The interest on these securities is generally exempt from state and local income taxes. Ordinarily, the Fund does not buy securities issued or guaranteed by agencies of the U.S. government.
Institutional Shares [Member] | JPMorgan Federal Money Market Fund  
Prospectus [Line Items]  
Strategy [Heading] <span style="color:#000000;font-family:Arial Narrow;font-size:11pt;font-weight:bold;">The Fund’s Main Investment Strategy</span>
Strategy Narrative [Text Block] Under normal conditions, the Fund invests its assets exclusively in: ●obligations of the U.S. Treasury, including Treasury bills, bonds and notes, and ●debt securities that certain U.S. government agencies or instrumentalities have either issued or guaranteed as to principal and interest. The interest on these securities is generally exempt from state and local income taxes.The Fund is a money market fund managed in the following manner: ●The Fund seeks to maintain a net asset value (“NAV”) of $1.00 per share. ●The dollar-weighted average maturity of the Fund will be 60 days or less and the dollar-weighted average life to maturity will be 120 days or less. ●The Fund will only buy securities that have remaining maturities of 397 days or less or securities otherwise permitted to be purchased because of maturity shortening provisions under applicable regulation. ●The Fund invests only in U.S. dollar-denominated securities. ●The Fund seeks to invest in securities that present minimal credit risk. The Fund may invest significantly in securities with floating or variable rates of interest. Their yields will vary as interest rates change. The Fund will generally hold a portion of its assets in cash, primarily to meet redemptions. The Fund intends to continue to qualify as a “government money market fund,” as such term is defined in or interpreted under Rule 2a-7 under the Investment Company Act of 1940, as amended (“Investment Company Act”). “Government money market funds” are required to invest at least 99.5% of their assets in (i) cash, (ii) securities issued or guaranteed by the United States or certain U.S. government agencies or instrumentalities and/or (iii) repurchase agreements that are collateralized fully, and are exempt from requirements that permit money market funds to impose a liquidity fee. While the J.P. Morgan Funds’ Board of Trustees (the “Board”) may elect to subject the Fund to liquidity fee requirements in the future, the Board has not elected to do so at this time. A government money market fund may also include investments in other government money market funds as an eligible investment for purposes of the 99.5% requirement above. The Fund may trade securities on a when-issued, delayed settlement or forward commitment basis. The Fund’s adviser seeks to develop an appropriate portfolio by considering the differences in yields among securities of different maturities, market sectors and issuers.
Summary of Definition of Rule 35d-1 Term in Fund Name [Text Block] The Fund is a money market fund managed in the following manner: ●The Fund seeks to maintain a net asset value (“NAV”) of $1.00 per share. ●The dollar-weighted average maturity of the Fund will be 60 days or less and the dollar-weighted average life to maturity will be 120 days or less. ●The Fund will only buy securities that have remaining maturities of 397 days or less or securities otherwise permitted to be purchased because of maturity shortening provisions under applicable regulation. ●The Fund invests only in U.S. dollar-denominated securities. ●The Fund seeks to invest in securities that present minimal credit risk. The Fund may invest significantly in securities with floating or variable rates of interest. Their yields will vary as interest rates change. The Fund will generally hold a portion of its assets in cash, primarily to meet redemptions. The Fund intends to continue to qualify as a “government money market fund,” as such term is defined in or interpreted under Rule 2a-7 under the Investment Company Act of 1940, as amended (“Investment Company Act”). “Government money market funds” are required to invest at least 99.5% of their assets in (i) cash, (ii) securities issued or guaranteed by the United States or certain U.S. government agencies or instrumentalities and/or (iii) repurchase agreements that are collateralized fully, and are exempt from requirements that permit money market funds to impose a liquidity fee.
Summary of Selection Criteria for Rule 35d-1 Term in Fund Name [Text Block] Under normal conditions, the Fund invests its assets exclusively in: ●obligations of the U.S. Treasury, including Treasury bills, bonds and notes, and ●debt securities that certain U.S. government agencies or instrumentalities have either issued or guaranteed as to principal and interest. The interest on these securities is generally exempt from state and local income taxes.
Institutional Shares [Member] | JPMorgan California Municipal Money Market Fund  
Prospectus [Line Items]  
Strategy [Heading] <span style="color:#000000;font-family:Arial Narrow;font-size:11pt;font-weight:bold;">The Fund’s Main Investment Strategy</span>
Strategy Narrative [Text Block] Under normal conditions, the Fund invests primarily in municipal obligations, the interest on which is excluded from gross income for federal income tax purposes, exempt from California personal income taxes and is not subject to the federal alternative minimum tax on individuals.As a fundamental policy, the Fund normally invests at least 80% of the value of its Assets in such municipal obligations. For purposes of this policy, “Assets” means net assets, plus the amount of borrowings for investment purposes. For purposes of the 80% policy above, the Fund will only invest in municipal obligations if the issuer receives assurances from legal counsel that the interest payable on the securities is excluded from gross income for federal income tax purposes, exempt from California personal income taxes and is not subject to the federal alternative minimum tax on individuals. Municipal obligations in which the Fund may invest are securities that are issued by the State of California, its political subdivisions, authorities, and agencies, as well as by Puerto Rico, other U.S. territories and their political subdivisions.The Fund generally invests in short-term money market instruments, such as private activity and industrial development bonds, tax anticipation notes, municipal lease obligations and participations in pools of municipal obligations. In addition to purchasing municipal obligations directly, the Fund may invest in municipal obligations by (1) purchasing instruments evidencing direct ownership of interest payments or principal payments, or both, on municipal obligations, such as tender option bonds, or (2) purchasing participation interests in all or part of specific holdings of municipal obligations, provided that the applicable issuer receives assurances from legal counsel that the interest payable on the securities is excluded from gross income for federal income tax purposes, exempt from California personal income taxes and is not subject to the federal alternative minimum tax on individuals. Up to 20% of the Fund’s total assets may be invested in investments subject to California personal income taxes, or in securities subject to federal income tax or the federal alternative minimum tax, such as taxable money market instruments or repurchase agreements. The Fund is a money market fund managed in the following manner: ●The Fund seeks to maintain a net asset value (“NAV”) of $1.00 per share. ●The dollar-weighted average maturity of the Fund will be 60 days or less and the dollar-weighted average life to maturity will be 120 days or less. ●The Fund will only buy securities that have remaining maturities of 397 days or less or securities otherwise permitted to be purchased because of maturity shortening provisions under applicable regulation. ●The Fund invests only in U.S. dollar-denominated securities. ●The Fund seeks to invest in securities that present minimal credit risk.The Fund may invest significantly in securities with floating or variable rates of interest. Their yields will vary as interest rates change. The Fund will at times hold some of its assets in cash. The Fund’s adviser seeks to develop an appropriate portfolio by considering the differences in yields among securities of different maturities, market sectors and issuers. Applicable Money Market Fund Regulations Under the Securities and Exchange Commission (“SEC”) rules that govern the operation of registered money market funds (“MMFs”), MMFs that qualify as “retail” (“Retail MMFs”) or “government” (“Government MMFs”) are permitted to utilize amortized cost to value their portfolio securities and to transact at their existing $1.00 share price. MMFs that do not qualify as Retail MMFs or Government MMFs (collectively, “Institutional MMFs”) are required to price and transact in their shares at NAV reflecting current market-based values of their portfolio securities (i.e., at a “floating NAV”). The Fund intends to qualify as a Retail MMF. Liquidity Fees The Fund’s policies and procedures permit the Fund to impose a discretionary liquidity fee on redemptions of up to 2% of the value of the shares redeemed if the adviser, as the delegate of the Board, determines it is in the best interests of the Fund. Further Developments The Fund may redeem investors that do not satisfy the eligibility requirements for Retail MMF investors. The Fund will provide advance written notification of its intent to make any such involuntary redemptions to the applicable shareholders, which will include more specific information about timing. Neither the Fund nor the adviser will be responsible for any loss in an investor’s account or tax liability resulting from an involuntary redemption.
Summary of Definition of Rule 35d-1 Term in Fund Name [Text Block] The Fund is a money market fund managed in the following manner: ●The Fund seeks to maintain a net asset value (“NAV”) of $1.00 per share. ●The dollar-weighted average maturity of the Fund will be 60 days or less and the dollar-weighted average life to maturity will be 120 days or less. ●The Fund will only buy securities that have remaining maturities of 397 days or less or securities otherwise permitted to be purchased because of maturity shortening provisions under applicable regulation. ●The Fund invests only in U.S. dollar-denominated securities. ●The Fund seeks to invest in securities that present minimal credit risk.
Summary of Selection Criteria for Rule 35d-1 Term in Fund Name [Text Block] Under normal conditions, the Fund invests primarily in municipal obligations, the interest on which is excluded from gross income for federal income tax purposes, exempt from California personal income taxes and is not subject to the federal alternative minimum tax on individuals.
Rule 35d-1 Eighty Percent Investment Policy [Text Block] As a fundamental policy, the Fund normally invests at least 80% of the value of its Assets in such municipal obligations. For purposes of this policy, “Assets” means net assets, plus the amount of borrowings for investment purposes. For purposes of the 80% policy above, the Fund will only invest in municipal obligations if the issuer receives assurances from legal counsel that the interest payable on the securities is excluded from gross income for federal income tax purposes, exempt from California personal income taxes and is not subject to the federal alternative minimum tax on individuals. Municipal obligations in which the Fund may invest are securities that are issued by the State of California, its political subdivisions, authorities, and agencies, as well as by Puerto Rico, other U.S. territories and their political subdivisions.
Institutional Shares [Member] | JPMorgan New York Municipal Money Market Fund  
Prospectus [Line Items]  
Strategy [Heading] <span style="color:#000000;font-family:Arial Narrow;font-size:11pt;font-weight:bold;">The Fund’s Main Investment Strategy</span>
Strategy Narrative [Text Block] Under normal conditions, the Fund invests primarily in municipal obligations, the interest on which is excluded from gross income for federal income tax purposes, exempt from New York State and New York City personal income taxes and is not subject to the federal alternative minimum tax on individuals.As a fundamental policy, the Fund normally invests at least 80% of the value of its Assets in such municipal obligations. For purposes of this policy, “Assets” means net assets, plus the amount of borrowings for investment purposes. For purposes of the 80% policy above, the Fund will only invest in municipal obligations if the issuer receives assurances from legal counsel that the interest payable on the securities is excluded from gross income for federal income tax purposes, exempt from New York State and New York City personal income taxes and is not subject to the federal alternative minimum tax on individuals. Municipal obligations in which the Fund may invest are securities that are issued by the State of New York, its political subdivisions, authorities, and agencies, as well as by Puerto Rico, other U.S. territories and their political subdivisions.The Fund generally invests in short-term money market instruments such as private activity and industrial development bonds, tax anticipation notes, municipal lease obligations and participations in pools of municipal obligations. In addition to purchasing municipal obligations directly, the Fund may invest in municipal obligations by (1) purchasing instruments evidencing direct ownership of interest payments or principal payments, or both, on municipal obligations, such as tender option bonds, or (2) purchasing participation interests in all or part of specific holdings of municipal obligations, provided that the applicable issuer receives assurances from legal counsel that the interest payable on the securities is excluded from gross income for federal income tax purposes, exempt from New York State and New York City personal income taxes and is not subject to the federal alternative minimum tax on individuals. Up to 20% of the Fund’s total assets may be invested in investments subject to New York State and/or City personal income taxes, or in securities subject to federal income tax or the federal alternative minimum tax, such as taxable money market instruments or repurchase agreements. The Fund is a money market fund managed in the following manner: ●The Fund seeks to maintain a net asset value (“NAV”) of $1.00 per share. ●The dollar-weighted average maturity of the Fund will be 60 days or less and the dollar-weighted average life to maturity will be 120 days or less. ●The Fund will only buy securities that have remaining maturities of 397 days or less or securities otherwise permitted to be purchased because of maturity shortening provisions under applicable regulation. ●The Fund invests only in U.S. dollar-denominated securities. ●The Fund seeks to invest in securities that present minimal credit risk.The Fund may invest significantly in securities with floating or variable rates of interest. Their yields will vary as interest rates change. The Fund will at times hold some of its assets in cash. The Fund’s adviser seeks to develop an appropriate portfolio by considering the differences in yields among securities of different maturities, market sectors and issuers. Applicable Money Market Fund Regulations Under the Securities and Exchange Commission (“SEC”) rules that govern the operation of registered money market funds (“MMFs”), MMFs that qualify as “retail” (“Retail MMFs”) or “government” (“Government MMFs”) are permitted to utilize amortized cost to value their portfolio securities and to transact at their existing $1.00 share price. MMFs that do not qualify as Retail MMFs or Government MMFs (collectively, “Institutional MMFs”) are required to price and transact in their shares at NAV reflecting current market-based values of their portfolio securities (i.e., at a “floating NAV”). The Fund intends to qualify as a Retail MMF. Liquidity Fees The Fund’s policies and procedures permit the Fund to impose a discretionary liquidity fee on redemptions of up to 2% of the value of the shares redeemed if the adviser, as the delegate of the Board, determines it is in the best interests of the Fund. Further Developments The Fund may redeem investors that do not satisfy the eligibility requirements for Retail MMF investors. The Fund will provide advance written notification of its intent to make any such involuntary redemptions to the applicable shareholders, which will include more specific information about timing. Neither the Fund nor the adviser will be responsible for any loss in an investor’s account or tax liability resulting from an involuntary redemption.
Summary of Definition of Rule 35d-1 Term in Fund Name [Text Block] The Fund is a money market fund managed in the following manner: ●The Fund seeks to maintain a net asset value (“NAV”) of $1.00 per share. ●The dollar-weighted average maturity of the Fund will be 60 days or less and the dollar-weighted average life to maturity will be 120 days or less. ●The Fund will only buy securities that have remaining maturities of 397 days or less or securities otherwise permitted to be purchased because of maturity shortening provisions under applicable regulation. ●The Fund invests only in U.S. dollar-denominated securities. ●The Fund seeks to invest in securities that present minimal credit risk.
Summary of Selection Criteria for Rule 35d-1 Term in Fund Name [Text Block] Under normal conditions, the Fund invests primarily in municipal obligations, the interest on which is excluded from gross income for federal income tax purposes, exempt from New York State and New York City personal income taxes and is not subject to the federal alternative minimum tax on individuals.
Rule 35d-1 Eighty Percent Investment Policy [Text Block] As a fundamental policy, the Fund normally invests at least 80% of the value of its Assets in such municipal obligations. For purposes of this policy, “Assets” means net assets, plus the amount of borrowings for investment purposes. For purposes of the 80% policy above, the Fund will only invest in municipal obligations if the issuer receives assurances from legal counsel that the interest payable on the securities is excluded from gross income for federal income tax purposes, exempt from New York State and New York City personal income taxes and is not subject to the federal alternative minimum tax on individuals. Municipal obligations in which the Fund may invest are securities that are issued by the State of New York, its political subdivisions, authorities, and agencies, as well as by Puerto Rico, other U.S. territories and their political subdivisions.
Institutional Shares [Member] | JPMorgan Tax Free Money Market Fund  
Prospectus [Line Items]  
Strategy [Heading] <span style="color:#000000;font-family:Arial Narrow;font-size:11pt;font-weight:bold;">The Fund’s Main Investment Strategy</span>
Strategy Narrative [Text Block] Under normal conditions, the Fund invests primarily in municipal obligations, the interest on which is excluded from federal income taxes.As a fundamental policy, the Fund will invest at least 80% of the value of its Assets in municipal obligations. For purposes of this policy, “Assets” means net assets, plus the amount of borrowings for investment purposes. Municipal obligations are securities that are issued by or on behalf of states, territories and possessions of the United States, including the District of Columbia, and their respective authorities, agencies and other groups with authority to act for the municipalities. The Fund generally invests in short-term money market instruments such as private activity and industrial development bonds, tax anticipation notes, municipal lease obligations and participations in pools of municipal obligations. For purposes of the 80% policy above, the Fund will only invest in municipal obligations if the issuer receives assurances from legal counsel that the interest payable on the securities is exempt from federal income tax.In addition to purchasing municipal obligations directly, the Fund may invest in municipal obligations by (1) purchasing instruments evidencing direct ownership of interest payments or principal payments, or both, on municipal obligations, such as tender option bonds, or (2) purchasing participation interests in all or part of specific holdings of municipal obligations, provided that the applicable issuer receives assurances from legal counsel that the interest payable on the securities is exempt from federal income tax. The remaining 20% of the Fund’s total assets may be invested in securities subject to federal income tax or the federal alternative minimum tax. The Fund is a money market fund managed in the following manner: ●The Fund seeks to maintain a net asset value (“NAV”) of $1.00 per share. ●The dollar-weighted average maturity of the Fund will be 60 days or less and the dollar-weighted average life to maturity will be 120 days or less. ●The Fund will only buy securities that have remaining maturities of 397 days or less or securities otherwise permitted to be purchased because of maturity shortening provisions under applicable regulation. ●The Fund invests only in U.S. dollar-denominated securities. ●The Fund seeks to invest in securities that present minimal credit risk.The Fund may invest significantly in securities with floating or variable rates of interest. Their yields will vary as interest rates change. The Fund will at times hold some of its assets in cash. The Fund’s adviser seeks to develop an appropriate portfolio by considering the differences in yields among securities of different maturities, market sectors and issuers. Applicable Money Market Fund Regulations Under the Securities and Exchange Commission (“SEC”) rules that govern the operation of registered money market funds (“MMFs”), MMFs that qualify as “retail” (“Retail MMFs”) or “government” (“Government MMFs”) are permitted to utilize amortized cost to value their portfolio securities and to transact at their existing $1.00 share price. MMFs that do not qualify as Retail MMFs or Government MMFs (collectively, “Institutional MMFs”) are required to price and transact in their shares at NAV reflecting current market-based values of their portfolio securities (i.e., at a “floating NAV”). The Fund intends to qualify as a Retail MMF. Liquidity Fees The Fund’s policies and procedures permit the Fund to impose a discretionary liquidity fee on redemptions of up to 2% of the value of the shares redeemed if the adviser, as the delegate of the Board, determines it is in the best interests of the Fund. Further Developments The Fund may redeem investors that do not satisfy the eligibility requirements for Retail MMF investors. The Fund will provide advance written notification of its intent to make any such involuntary redemptions to the applicable shareholders, which will include more specific information about timing. Neither the Fund nor the adviser will be responsible for any loss in an investor’s account or tax liability resulting from an involuntary redemption.
Summary of Definition of Rule 35d-1 Term in Fund Name [Text Block] The Fund is a money market fund managed in the following manner: ●The Fund seeks to maintain a net asset value (“NAV”) of $1.00 per share. ●The dollar-weighted average maturity of the Fund will be 60 days or less and the dollar-weighted average life to maturity will be 120 days or less. ●The Fund will only buy securities that have remaining maturities of 397 days or less or securities otherwise permitted to be purchased because of maturity shortening provisions under applicable regulation. ●The Fund invests only in U.S. dollar-denominated securities. ●The Fund seeks to invest in securities that present minimal credit risk.
Summary of Selection Criteria for Rule 35d-1 Term in Fund Name [Text Block] Under normal conditions, the Fund invests primarily in municipal obligations, the interest on which is excluded from federal income taxes.
Rule 35d-1 Eighty Percent Investment Policy [Text Block] As a fundamental policy, the Fund will invest at least 80% of the value of its Assets in municipal obligations. For purposes of this policy, “Assets” means net assets, plus the amount of borrowings for investment purposes. Municipal obligations are securities that are issued by or on behalf of states, territories and possessions of the United States, including the District of Columbia, and their respective authorities, agencies and other groups with authority to act for the municipalities. The Fund generally invests in short-term money market instruments such as private activity and industrial development bonds, tax anticipation notes, municipal lease obligations and participations in pools of municipal obligations. For purposes of the 80% policy above, the Fund will only invest in municipal obligations if the issuer receives assurances from legal counsel that the interest payable on the securities is exempt from federal income tax.
Morgan C Shares [Member] | JPMorgan Prime Money Market Fund  
Prospectus [Line Items]  
Strategy [Heading] <span style="color:#000000;font-family:Arial Narrow;font-size:11pt;font-weight:bold;">The Fund’s Main Investment Strategy</span>
Strategy Narrative [Text Block] The Fund invests in high quality, short-term money market instruments which are issued and payable in U.S. dollars. The Fund principally invests in: ●high quality commercial paper and other short-term debt securities, including floating and variable rate demand notes of U.S. and foreign corporations, ●debt securities issued or guaranteed by qualified U.S. and foreign banks, including certificates of deposit, time deposits and other short-term securities, ●securities issued or guaranteed by the U.S. government, its agencies or instrumentalities or Government-Sponsored Enterprises (“GSEs”), ●asset-backed securities, ●repurchase agreements, and ●taxable municipal obligations.The Fund is a money market fund managed in the following manner: ●The Fund calculates its net asset value to four decimals (e.g., $1.0000) using market-based pricing and operates with a floating net asset value. ●The dollar-weighted average maturity of the Fund will be 60 days or less and the dollar-weighted average life to maturity will be 120 days or less. ●The Fund will only buy securities that have remaining maturities of 397 days or less or securities otherwise permitted to be purchased because of maturity shortening provisions under applicable regulation. ●The Fund invests only in U.S. dollar-denominated securities. ●The Fund seeks to invest in securities that present minimal credit risk.The Fund may invest significantly in securities with floating or variable rates of interest. Their yields will vary as interest rates change. The securities in which the Fund may invest include privately placed securities. The Fund will generally hold a portion of its assets in cash, primarily to meet redemptions. The Fund will concentrate its investments in the banking industry. Therefore, under normal conditions, the Fund will invest at least 25% of its total assets in securities issued by companies in the banking industry. The Fund may, however, invest less than 25% of its total assets in this industry as a temporary defensive measure. The Fund may trade securities on a when-issued, delayed settlement or forward commitment basis. The Fund’s adviser seeks to develop an appropriate portfolio by considering the differences in yields among securities of different maturities, market sectors and issuers. Liquidity Fees The Fund’s policies and procedures require the Fund to impose a mandatory liquidity fee if the Fund experiences total daily net redemptions (based on flow information available within a reasonable period after the last computation of the Fund’s net asset value on that day) exceeding 5% of net assets, unless the amount of the mandatory liquidity fee would be de minimis. The size of the mandatory liquidity fee to be charged will be based on a good faith estimate, supported by data, of the costs the Fund would incur if it sold a pro rata amount of each security in its portfolio to satisfy the amount of the net redemptions. If these costs cannot be determined in good faith, a 1% default fee will be applied. If the amount of the mandatory liquidity fee would be de minimis (i.e., less than 0.01% of the value of the shares redeemed), the Fund is not required to charge a mandatory liquidity fee. In addition, the Fund’s policies and procedures permit the Fund to impose a discretionary liquidity fee on redemptions of up to 2% of the value of the shares redeemed if the adviser, as the delegate of the Board, determines it is in the best interests of the Fund.
Summary of Definition of Rule 35d-1 Term in Fund Name [Text Block] The Fund is a money market fund managed in the following manner: ●The Fund calculates its net asset value to four decimals (e.g., $1.0000) using market-based pricing and operates with a floating net asset value. ●The dollar-weighted average maturity of the Fund will be 60 days or less and the dollar-weighted average life to maturity will be 120 days or less. ●The Fund will only buy securities that have remaining maturities of 397 days or less or securities otherwise permitted to be purchased because of maturity shortening provisions under applicable regulation. ●The Fund invests only in U.S. dollar-denominated securities. ●The Fund seeks to invest in securities that present minimal credit risk.
Summary of Selection Criteria for Rule 35d-1 Term in Fund Name [Text Block] The Fund invests in high quality, short-term money market instruments which are issued and payable in U.S. dollars. The Fund principally invests in: ●high quality commercial paper and other short-term debt securities, including floating and variable rate demand notes of U.S. and foreign corporations, ●debt securities issued or guaranteed by qualified U.S. and foreign banks, including certificates of deposit, time deposits and other short-term securities, ●securities issued or guaranteed by the U.S. government, its agencies or instrumentalities or Government-Sponsored Enterprises (“GSEs”), ●asset-backed securities, ●repurchase agreements, and ●taxable municipal obligations.
Strategy Portfolio Concentration [Text] <span style="color:#000000;font-family:Arial Narrow;font-size:10pt;">The Fund will concentrate its investments in the banking industry. Therefore, under normal conditions, the Fund will invest at least 25% of its total assets in securities issued by companies in the banking industry.</span>
Morgan Shares [Member] | JPMorgan 100 U.S. Treasury Securities Money Market Fund  
Prospectus [Line Items]  
Strategy [Heading] <span style="color:#000000;font-family:Arial Narrow;font-size:11pt;font-weight:bold;">The Fund’s Main Investment Strategy</span>
Strategy Narrative [Text Block] Under normal conditions, the Fund invests its assets exclusively in obligations of the U.S. Treasury, including Treasury bills, bonds and notes. These investments carry different interest rates, maturities and issue dates. The interest on these securities is generally exempt from state and local income taxes. Ordinarily, the Fund does not buy securities issued or guaranteed by agencies of the U.S. government.The Fund is a money market fund managed in the following manner: ●The Fund seeks to maintain a net asset value (“NAV”) of $1.00 per share. ●The dollar-weighted average maturity of the Fund will be 60 days or less and the dollar-weighted average life to maturity will be 120 days or less. ●The Fund will only buy securities that have remaining maturities of 397 days or less or securities otherwise permitted to be purchased because of maturity shortening provisions under applicable regulation. ●The Fund seeks to invest in securities that present minimal credit risk. The Fund will generally hold a portion of its assets in cash, primarily to meet redemptions. The Fund intends to continue to qualify as a “government money market fund,” as such term is defined in or interpreted under Rule 2a-7 under the Investment Company Act of 1940, as amended (“Investment Company Act”). “Government money market funds” are required to invest at least 99.5% of their assets in (i) cash, (ii) securities issued or guaranteed by the United States or certain U.S. government agencies or instrumentalities and/or (iii) repurchase agreements that are collateralized fully, and are exempt from requirements that permit money market funds to impose a liquidity fee. While the J.P. Morgan Funds’ Board of Trustees (the “Board”) may elect to subject the Fund to liquidity fee requirements in the future, the Board has not elected to do so at this time. A government money market fund may also include investments in other government money market funds as an eligible investment for purposes of the 99.5% requirement above. The Fund’s adviser seeks to develop an appropriate portfolio by considering the differences in yields among securities of different maturities and issue dates.
Summary of Definition of Rule 35d-1 Term in Fund Name [Text Block] The Fund is a money market fund managed in the following manner: ●The Fund seeks to maintain a net asset value (“NAV”) of $1.00 per share. ●The dollar-weighted average maturity of the Fund will be 60 days or less and the dollar-weighted average life to maturity will be 120 days or less. ●The Fund will only buy securities that have remaining maturities of 397 days or less or securities otherwise permitted to be purchased because of maturity shortening provisions under applicable regulation. ●The Fund seeks to invest in securities that present minimal credit risk. The Fund will generally hold a portion of its assets in cash, primarily to meet redemptions. The Fund intends to continue to qualify as a “government money market fund,” as such term is defined in or interpreted under Rule 2a-7 under the Investment Company Act of 1940, as amended (“Investment Company Act”). “Government money market funds” are required to invest at least 99.5% of their assets in (i) cash, (ii) securities issued or guaranteed by the United States or certain U.S. government agencies or instrumentalities and/or (iii) repurchase agreements that are collateralized fully, and are exempt from requirements that permit money market funds to impose a liquidity fee.
Summary of Selection Criteria for Rule 35d-1 Term in Fund Name [Text Block] Under normal conditions, the Fund invests its assets exclusively in obligations of the U.S. Treasury, including Treasury bills, bonds and notes. These investments carry different interest rates, maturities and issue dates. The interest on these securities is generally exempt from state and local income taxes. Ordinarily, the Fund does not buy securities issued or guaranteed by agencies of the U.S. government.
Morgan Shares [Member] | JPMorgan Federal Money Market Fund  
Prospectus [Line Items]  
Strategy [Heading] <span style="color:#000000;font-family:Arial Narrow;font-size:11pt;font-weight:bold;">The Fund’s Main Investment Strategy</span>
Strategy Narrative [Text Block] Under normal conditions, the Fund invests its assets exclusively in: ●obligations of the U.S. Treasury, including Treasury bills, bonds and notes, and ●debt securities that certain U.S. government agencies or instrumentalities have either issued or guaranteed as to principal and interest. The interest on these securities is generally exempt from state and local income taxes.The Fund is a money market fund managed in the following manner: ●The Fund seeks to maintain a net asset value (“NAV”) of $1.00 per share. ●The dollar-weighted average maturity of the Fund will be 60 days or less and the dollar-weighted average life to maturity will be 120 days or less. ●The Fund will only buy securities that have remaining maturities of 397 days or less or securities otherwise permitted to be purchased because of maturity shortening provisions under applicable regulation. ●The Fund invests only in U.S. dollar-denominated securities. ●The Fund seeks to invest in securities that present minimal credit risk. The Fund may invest significantly in securities with floating or variable rates of interest. Their yields will vary as interest rates change. The Fund will generally hold a portion of its assets in cash, primarily to meet redemptions. The Fund intends to continue to qualify as a “government money market fund,” as such term is defined in or interpreted under Rule 2a-7 under the Investment Company Act of 1940, as amended (“Investment Company Act”). “Government money market funds” are required to invest at least 99.5% of their assets in (i) cash, (ii) securities issued or guaranteed by the United States or certain U.S. government agencies or instrumentalities and/or (iii) repurchase agreements that are collateralized fully, and are exempt from requirements that permit money market funds to impose a liquidity fee. While the J.P. Morgan Funds’ Board of Trustees (the “Board”) may elect to subject the Fund to liquidity fee requirements in the future, the Board has not elected to do so at this time. A government money market fund may also include investments in other government money market funds as an eligible investment for purposes of the 99.5% requirement above. The Fund may trade securities on a when-issued, delayed settlement or forward commitment basis. The Fund’s adviser seeks to develop an appropriate portfolio by considering the differences in yields among securities of different maturities, market sectors and issuers.
Summary of Definition of Rule 35d-1 Term in Fund Name [Text Block] The Fund is a money market fund managed in the following manner: ●The Fund seeks to maintain a net asset value (“NAV”) of $1.00 per share. ●The dollar-weighted average maturity of the Fund will be 60 days or less and the dollar-weighted average life to maturity will be 120 days or less. ●The Fund will only buy securities that have remaining maturities of 397 days or less or securities otherwise permitted to be purchased because of maturity shortening provisions under applicable regulation. ●The Fund invests only in U.S. dollar-denominated securities. ●The Fund seeks to invest in securities that present minimal credit risk. The Fund may invest significantly in securities with floating or variable rates of interest. Their yields will vary as interest rates change. The Fund will generally hold a portion of its assets in cash, primarily to meet redemptions. The Fund intends to continue to qualify as a “government money market fund,” as such term is defined in or interpreted under Rule 2a-7 under the Investment Company Act of 1940, as amended (“Investment Company Act”). “Government money market funds” are required to invest at least 99.5% of their assets in (i) cash, (ii) securities issued or guaranteed by the United States or certain U.S. government agencies or instrumentalities and/or (iii) repurchase agreements that are collateralized fully, and are exempt from requirements that permit money market funds to impose a liquidity fee.
Summary of Selection Criteria for Rule 35d-1 Term in Fund Name [Text Block] Under normal conditions, the Fund invests its assets exclusively in: ●obligations of the U.S. Treasury, including Treasury bills, bonds and notes, and ●debt securities that certain U.S. government agencies or instrumentalities have either issued or guaranteed as to principal and interest. The interest on these securities is generally exempt from state and local income taxes.
Morgan Shares [Member] | JPMorgan California Municipal Money Market Fund  
Prospectus [Line Items]  
Strategy [Heading] <span style="color:#000000;font-family:Arial Narrow;font-size:11pt;font-weight:bold;">The Fund’s Main Investment Strategy</span>
Strategy Narrative [Text Block] Under normal conditions, the Fund invests primarily in municipal obligations, the interest on which is excluded from gross income for federal income tax purposes, exempt from California personal income taxes and is not subject to the federal alternative minimum tax on individuals.As a fundamental policy, the Fund normally invests at least 80% of the value of its Assets in such municipal obligations. For purposes of this policy, “Assets” means net assets, plus the amount of borrowings for investment purposes. For purposes of the 80% policy above, the Fund will only invest in municipal obligations if the issuer receives assurances from legal counsel that the interest payable on the securities is excluded from gross income for federal income tax purposes, exempt from California personal income taxes and is not subject to the federal alternative minimum tax on individuals. Municipal obligations in which the Fund may invest are securities that are issued by the State of California, its political subdivisions, authorities, and agencies, as well as by Puerto Rico, other U.S. territories and their political subdivisions.The Fund generally invests in short-term money market instruments, such as private activity and industrial development bonds, tax anticipation notes, municipal lease obligations and participations in pools of municipal obligations. In addition to purchasing municipal obligations directly, the Fund may invest in municipal obligations by (1) purchasing instruments evidencing direct ownership of interest payments or principal payments, or both, on municipal obligations, such as tender option bonds, or (2) purchasing participation interests in all or part of specific holdings of municipal obligations, provided that the applicable issuer receives assurances from legal counsel that the interest payable on the securities is excluded from gross income for federal income tax purposes, exempt from California personal income taxes and is not subject to the federal alternative minimum tax on individuals. Up to 20% of the Fund’s total assets may be invested in investments subject to California personal income taxes, or in securities subject to federal income tax or the federal alternative minimum tax, such as taxable money market instruments or repurchase agreements. The Fund is a money market fund managed in the following manner: ●The Fund seeks to maintain a net asset value (“NAV”) of $1.00 per share. ●The dollar-weighted average maturity of the Fund will be 60 days or less and the dollar-weighted average life to maturity will be 120 days or less. ●The Fund will only buy securities that have remaining maturities of 397 days or less or securities otherwise permitted to be purchased because of maturity shortening provisions under applicable regulation. ●The Fund invests only in U.S. dollar-denominated securities. ●The Fund seeks to invest in securities that present minimal credit risk.The Fund may invest significantly in securities with floating or variable rates of interest. Their yields will vary as interest rates change. The Fund will at times hold some of its assets in cash. The Fund’s adviser seeks to develop an appropriate portfolio by considering the differences in yields among securities of different maturities, market sectors and issuers. Applicable Money Market Fund Regulations Under the Securities and Exchange Commission (“SEC”) rules that govern the operation of registered money market funds (“MMFs”), MMFs that qualify as “retail” (“Retail MMFs”) or “government” (“Government MMFs”) are permitted to utilize amortized cost to value their portfolio securities and to transact at their existing $1.00 share price. MMFs that do not qualify as Retail MMFs or Government MMFs (collectively, “Institutional MMFs”) are required to price and transact in their shares at NAV reflecting current market-based values of their portfolio securities (i.e., at a “floating NAV”). The Fund intends to qualify as a Retail MMF. Liquidity Fees The Fund’s policies and procedures permit the Fund to impose a discretionary liquidity fee on redemptions of up to 2% of the value of the shares redeemed if the adviser, as the delegate of the Board, determines it is in the best interests of the Fund. Further Developments The Fund may redeem investors that do not satisfy the eligibility requirements for Retail MMF investors. The Fund will provide advance written notification of its intent to make any such involuntary redemptions to the applicable shareholders, which will include more specific information about timing. Neither the Fund nor the adviser will be responsible for any loss in an investor’s account or tax liability resulting from an involuntary redemption.
Summary of Definition of Rule 35d-1 Term in Fund Name [Text Block] The Fund is a money market fund managed in the following manner: ●The Fund seeks to maintain a net asset value (“NAV”) of $1.00 per share. ●The dollar-weighted average maturity of the Fund will be 60 days or less and the dollar-weighted average life to maturity will be 120 days or less. ●The Fund will only buy securities that have remaining maturities of 397 days or less or securities otherwise permitted to be purchased because of maturity shortening provisions under applicable regulation. ●The Fund invests only in U.S. dollar-denominated securities. ●The Fund seeks to invest in securities that present minimal credit risk.
Summary of Selection Criteria for Rule 35d-1 Term in Fund Name [Text Block] Under normal conditions, the Fund invests primarily in municipal obligations, the interest on which is excluded from gross income for federal income tax purposes, exempt from California personal income taxes and is not subject to the federal alternative minimum tax on individuals.
Rule 35d-1 Eighty Percent Investment Policy [Text Block] As a fundamental policy, the Fund normally invests at least 80% of the value of its Assets in such municipal obligations. For purposes of this policy, “Assets” means net assets, plus the amount of borrowings for investment purposes. For purposes of the 80% policy above, the Fund will only invest in municipal obligations if the issuer receives assurances from legal counsel that the interest payable on the securities is excluded from gross income for federal income tax purposes, exempt from California personal income taxes and is not subject to the federal alternative minimum tax on individuals. Municipal obligations in which the Fund may invest are securities that are issued by the State of California, its political subdivisions, authorities, and agencies, as well as by Puerto Rico, other U.S. territories and their political subdivisions.
Morgan Shares [Member] | JPMorgan New York Municipal Money Market Fund  
Prospectus [Line Items]  
Strategy [Heading] <span style="color:#000000;font-family:Arial Narrow;font-size:11pt;font-weight:bold;">The Fund’s Main Investment Strategy</span>
Strategy Narrative [Text Block] Under normal conditions, the Fund invests primarily in municipal obligations, the interest on which is excluded from gross income for federal income tax purposes, exempt from New York State and New York City personal income taxes and is not subject to the federal alternative minimum tax on individuals.As a fundamental policy, the Fund normally invests at least 80% of the value of its Assets in such municipal obligations. For purposes of this policy, “Assets” means net assets, plus the amount of borrowings for investment purposes. For purposes of the 80% policy above, the Fund will only invest in municipal obligations if the issuer receives assurances from legal counsel that the interest payable on the securities is excluded from gross income for federal income tax purposes, exempt from New York State and New York City personal income taxes and is not subject to the federal alternative minimum tax on individuals. Municipal obligations in which the Fund may invest are securities that are issued by the State of New York, its political subdivisions, authorities, and agencies, as well as by Puerto Rico, other U.S. territories and their political subdivisions.The Fund generally invests in short-term money market instruments such as private activity and industrial development bonds, tax anticipation notes, municipal lease obligations and participations in pools of municipal obligations. In addition to purchasing municipal obligations directly, the Fund may invest in municipal obligations by (1) purchasing instruments evidencing direct ownership of interest payments or principal payments, or both, on municipal obligations, such as tender option bonds, or (2) purchasing participation interests in all or part of specific holdings of municipal obligations, provided that the applicable issuer receives assurances from legal counsel that the interest payable on the securities is excluded from gross income for federal income tax purposes, exempt from New York State and New York City personal income taxes and is not subject to the federal alternative minimum tax on individuals. Up to 20% of the Fund’s total assets may be invested in investments subject to New York State and/or City personal income taxes, or in securities subject to federal income tax or the federal alternative minimum tax, such as taxable money market instruments or repurchase agreements. The Fund is a money market fund managed in the following manner: ●The Fund seeks to maintain a net asset value (“NAV”) of $1.00 per share. ●The dollar-weighted average maturity of the Fund will be 60 days or less and the dollar-weighted average life to maturity will be 120 days or less. ●The Fund will only buy securities that have remaining maturities of 397 days or less or securities otherwise permitted to be purchased because of maturity shortening provisions under applicable regulation. ●The Fund invests only in U.S. dollar-denominated securities. ●The Fund seeks to invest in securities that present minimal credit risk.The Fund may invest significantly in securities with floating or variable rates of interest. Their yields will vary as interest rates change. The Fund will at times hold some of its assets in cash. The Fund’s adviser seeks to develop an appropriate portfolio by considering the differences in yields among securities of different maturities, market sectors and issuers. Applicable Money Market Fund Regulations Under the Securities and Exchange Commission (“SEC”) rules that govern the operation of registered money market funds (“MMFs”), MMFs that qualify as “retail” (“Retail MMFs”) or “government” (“Government MMFs”) are permitted to utilize amortized cost to value their portfolio securities and to transact at their existing $1.00 share price. MMFs that do not qualify as Retail MMFs or Government MMFs (collectively, “Institutional MMFs”) are required to price and transact in their shares at NAV reflecting current market-based values of their portfolio securities (i.e., at a “floating NAV”). The Fund intends to qualify as a Retail MMF. Liquidity Fees The Fund’s policies and procedures permit the Fund to impose a discretionary liquidity fee on redemptions of up to 2% of the value of the shares redeemed if the adviser, as the delegate of the Board, determines it is in the best interests of the Fund. Further Developments The Fund may redeem investors that do not satisfy the eligibility requirements for Retail MMF investors. The Fund will provide advance written notification of its intent to make any such involuntary redemptions to the applicable shareholders, which will include more specific information about timing. Neither the Fund nor the adviser will be responsible for any loss in an investor’s account or tax liability resulting from an involuntary redemption.
Summary of Definition of Rule 35d-1 Term in Fund Name [Text Block] The Fund is a money market fund managed in the following manner: ●The Fund seeks to maintain a net asset value (“NAV”) of $1.00 per share. ●The dollar-weighted average maturity of the Fund will be 60 days or less and the dollar-weighted average life to maturity will be 120 days or less. ●The Fund will only buy securities that have remaining maturities of 397 days or less or securities otherwise permitted to be purchased because of maturity shortening provisions under applicable regulation. ●The Fund invests only in U.S. dollar-denominated securities. ●The Fund seeks to invest in securities that present minimal credit risk.
Summary of Selection Criteria for Rule 35d-1 Term in Fund Name [Text Block] Under normal conditions, the Fund invests primarily in municipal obligations, the interest on which is excluded from gross income for federal income tax purposes, exempt from New York State and New York City personal income taxes and is not subject to the federal alternative minimum tax on individuals.
Rule 35d-1 Eighty Percent Investment Policy [Text Block] As a fundamental policy, the Fund normally invests at least 80% of the value of its Assets in such municipal obligations. For purposes of this policy, “Assets” means net assets, plus the amount of borrowings for investment purposes. For purposes of the 80% policy above, the Fund will only invest in municipal obligations if the issuer receives assurances from legal counsel that the interest payable on the securities is excluded from gross income for federal income tax purposes, exempt from New York State and New York City personal income taxes and is not subject to the federal alternative minimum tax on individuals. Municipal obligations in which the Fund may invest are securities that are issued by the State of New York, its political subdivisions, authorities, and agencies, as well as by Puerto Rico, other U.S. territories and their political subdivisions.
Morgan Shares [Member] | JPMorgan Tax Free Money Market Fund  
Prospectus [Line Items]  
Strategy [Heading] <span style="color:#000000;font-family:Arial Narrow;font-size:11pt;font-weight:bold;">The Fund’s Main Investment Strategy</span>
Strategy Narrative [Text Block] Under normal conditions, the Fund invests primarily in municipal obligations, the interest on which is excluded from federal income taxes.As a fundamental policy, the Fund will invest at least 80% of the value of its Assets in municipal obligations. For purposes of this policy, “Assets” means net assets, plus the amount of borrowings for investment purposes. Municipal obligations are securities that are issued by or on behalf of states, territories and possessions of the United States, including the District of Columbia, and their respective authorities, agencies and other groups with authority to act for the municipalities. The Fund generally invests in short-term money market instruments such as private activity and industrial development bonds, tax anticipation notes, municipal lease obligations and participations in pools of municipal obligations. For purposes of the 80% policy above, the Fund will only invest in municipal obligations if the issuer receives assurances from legal counsel that the interest payable on the securities is exempt from federal income tax.In addition to purchasing municipal obligations directly, the Fund may invest in municipal obligations by (1) purchasing instruments evidencing direct ownership of interest payments or principal payments, or both, on municipal obligations, such as tender option bonds, or (2) purchasing participation interests in all or part of specific holdings of municipal obligations, provided that the applicable issuer receives assurances from legal counsel that the interest payable on the securities is exempt from federal income tax. The remaining 20% of the Fund’s total assets may be invested in securities subject to federal income tax or the federal alternative minimum tax. The Fund is a money market fund managed in the following manner: ●The Fund seeks to maintain a net asset value (“NAV”) of $1.00 per share. ●The dollar-weighted average maturity of the Fund will be 60 days or less and the dollar-weighted average life to maturity will be 120 days or less. ●The Fund will only buy securities that have remaining maturities of 397 days or less or securities otherwise permitted to be purchased because of maturity shortening provisions under applicable regulation. ●The Fund invests only in U.S. dollar-denominated securities. ●The Fund seeks to invest in securities that present minimal credit risk.The Fund may invest significantly in securities with floating or variable rates of interest. Their yields will vary as interest rates change. The Fund will at times hold some of its assets in cash. The Fund’s adviser seeks to develop an appropriate portfolio by considering the differences in yields among securities of different maturities, market sectors and issuers. Applicable Money Market Fund Regulations Under the Securities and Exchange Commission (“SEC”) rules that govern the operation of registered money market funds (“MMFs”), MMFs that qualify as “retail” (“Retail MMFs”) or “government” (“Government MMFs”) are permitted to utilize amortized cost to value their portfolio securities and to transact at their existing $1.00 share price. MMFs that do not qualify as Retail MMFs or Government MMFs (collectively, “Institutional MMFs”) are required to price and transact in their shares at NAV reflecting current market-based values of their portfolio securities (i.e., at a “floating NAV”). The Fund intends to qualify as a Retail MMF. Liquidity Fees The Fund’s policies and procedures permit the Fund to impose a discretionary liquidity fee on redemptions of up to 2% of the value of the shares redeemed if the adviser, as the delegate of the Board, determines it is in the best interests of the Fund. Further Developments The Fund may redeem investors that do not satisfy the eligibility requirements for Retail MMF investors. The Fund will provide advance written notification of its intent to make any such involuntary redemptions to the applicable shareholders, which will include more specific information about timing. Neither the Fund nor the adviser will be responsible for any loss in an investor’s account or tax liability resulting from an involuntary redemption.
Summary of Definition of Rule 35d-1 Term in Fund Name [Text Block] The Fund is a money market fund managed in the following manner: ●The Fund seeks to maintain a net asset value (“NAV”) of $1.00 per share. ●The dollar-weighted average maturity of the Fund will be 60 days or less and the dollar-weighted average life to maturity will be 120 days or less. ●The Fund will only buy securities that have remaining maturities of 397 days or less or securities otherwise permitted to be purchased because of maturity shortening provisions under applicable regulation. ●The Fund invests only in U.S. dollar-denominated securities. ●The Fund seeks to invest in securities that present minimal credit risk.
Summary of Selection Criteria for Rule 35d-1 Term in Fund Name [Text Block] Under normal conditions, the Fund invests primarily in municipal obligations, the interest on which is excluded from federal income taxes.
Rule 35d-1 Eighty Percent Investment Policy [Text Block] As a fundamental policy, the Fund will invest at least 80% of the value of its Assets in municipal obligations. For purposes of this policy, “Assets” means net assets, plus the amount of borrowings for investment purposes. Municipal obligations are securities that are issued by or on behalf of states, territories and possessions of the United States, including the District of Columbia, and their respective authorities, agencies and other groups with authority to act for the municipalities. The Fund generally invests in short-term money market instruments such as private activity and industrial development bonds, tax anticipation notes, municipal lease obligations and participations in pools of municipal obligations. For purposes of the 80% policy above, the Fund will only invest in municipal obligations if the issuer receives assurances from legal counsel that the interest payable on the securities is exempt from federal income tax.
Premier Shares [Member] | JPMorgan Prime Money Market Fund  
Prospectus [Line Items]  
Strategy [Heading] <span style="color:#000000;font-family:Arial Narrow;font-size:11pt;font-weight:bold;">The Fund’s Main Investment Strategy</span>
Strategy Narrative [Text Block] The Fund invests in high quality, short-term money market instruments which are issued and payable in U.S. dollars. The Fund principally invests in: ●high quality commercial paper and other short-term debt securities, including floating and variable rate demand notes of U.S. and foreign corporations, ●debt securities issued or guaranteed by qualified U.S. and foreign banks, including certificates of deposit, time deposits and other short-term securities, ●securities issued or guaranteed by the U.S. government, its agencies or instrumentalities or Government-Sponsored Enterprises (“GSEs”), ●asset-backed securities, ●repurchase agreements, and ●taxable municipal obligations.The Fund is a money market fund managed in the following manner: ●The Fund calculates its net asset value to four decimals (e.g., $1.0000) using market-based pricing and operates with a floating net asset value. ●The dollar-weighted average maturity of the Fund will be 60 days or less and the dollar-weighted average life to maturity will be 120 days or less. ●The Fund will only buy securities that have remaining maturities of 397 days or less or securities otherwise permitted to be purchased because of maturity shortening provisions under applicable regulation. ●The Fund invests only in U.S. dollar-denominated securities. ●The Fund seeks to invest in securities that present minimal credit risk.The Fund may invest significantly in securities with floating or variable rates of interest. Their yields will vary as interest rates change. The securities in which the Fund may invest include privately placed securities. The Fund will generally hold a portion of its assets in cash, primarily to meet redemptions. The Fund will concentrate its investments in the banking industry. Therefore, under normal conditions, the Fund will invest at least 25% of its total assets in securities issued by companies in the banking industry. The Fund may, however, invest less than 25% of its total assets in this industry as a temporary defensive measure. The Fund may trade securities on a when-issued, delayed settlement or forward commitment basis. The Fund’s adviser seeks to develop an appropriate portfolio by considering the differences in yields among securities of different maturities, market sectors and issuers. Liquidity Fees The Fund’s policies and procedures require the Fund to impose a mandatory liquidity fee if the Fund experiences total daily net redemptions (based on flow information available within a reasonable period after the last computation of the Fund’s net asset value on that day) exceeding 5% of net assets, unless the amount of the mandatory liquidity fee would be de minimis. The size of the mandatory liquidity fee to be charged will be based on a good faith estimate, supported by data, of the costs the Fund would incur if it sold a pro rata amount of each security in its portfolio to satisfy the amount of the net redemptions. If these costs cannot be determined in good faith, a 1% default fee will be applied. If the amount of the mandatory liquidity fee would be de minimis (i.e., less than 0.01% of the value of the shares redeemed), the Fund is not required to charge a mandatory liquidity fee. In addition, the Fund’s policies and procedures permit the Fund to impose a discretionary liquidity fee on redemptions of up to 2% of the value of the shares redeemed if the adviser, as the delegate of the Board, determines it is in the best interests of the Fund.
Summary of Definition of Rule 35d-1 Term in Fund Name [Text Block] The Fund is a money market fund managed in the following manner: ●The Fund calculates its net asset value to four decimals (e.g., $1.0000) using market-based pricing and operates with a floating net asset value. ●The dollar-weighted average maturity of the Fund will be 60 days or less and the dollar-weighted average life to maturity will be 120 days or less. ●The Fund will only buy securities that have remaining maturities of 397 days or less or securities otherwise permitted to be purchased because of maturity shortening provisions under applicable regulation. ●The Fund invests only in U.S. dollar-denominated securities. ●The Fund seeks to invest in securities that present minimal credit risk.
Summary of Selection Criteria for Rule 35d-1 Term in Fund Name [Text Block] The Fund invests in high quality, short-term money market instruments which are issued and payable in U.S. dollars. The Fund principally invests in: ●high quality commercial paper and other short-term debt securities, including floating and variable rate demand notes of U.S. and foreign corporations, ●debt securities issued or guaranteed by qualified U.S. and foreign banks, including certificates of deposit, time deposits and other short-term securities, ●securities issued or guaranteed by the U.S. government, its agencies or instrumentalities or Government-Sponsored Enterprises (“GSEs”), ●asset-backed securities, ●repurchase agreements, and ●taxable municipal obligations.
Strategy Portfolio Concentration [Text] <span style="color:#000000;font-family:Arial Narrow;font-size:10pt;">The Fund will concentrate its investments in the banking industry. Therefore, under normal conditions, the Fund will invest at least 25% of its total assets in securities issued by companies in the banking industry.</span>
Premier Shares [Member] | JPMorgan 100 U.S. Treasury Securities Money Market Fund  
Prospectus [Line Items]  
Strategy [Heading] <span style="color:#000000;font-family:Arial Narrow;font-size:11pt;font-weight:bold;">The Fund’s Main Investment Strategy</span>
Strategy Narrative [Text Block] Under normal conditions, the Fund invests its assets exclusively in obligations of the U.S. Treasury, including Treasury bills, bonds and notes. These investments carry different interest rates, maturities and issue dates. The interest on these securities is generally exempt from state and local income taxes. Ordinarily, the Fund does not buy securities issued or guaranteed by agencies of the U.S. government.The Fund is a money market fund managed in the following manner: ●The Fund seeks to maintain a net asset value (“NAV”) of $1.00 per share. ●The dollar-weighted average maturity of the Fund will be 60 days or less and the dollar-weighted average life to maturity will be 120 days or less. ●The Fund will only buy securities that have remaining maturities of 397 days or less or securities otherwise permitted to be purchased because of maturity shortening provisions under applicable regulation. ●The Fund seeks to invest in securities that present minimal credit risk. The Fund will generally hold a portion of its assets in cash, primarily to meet redemptions. The Fund intends to continue to qualify as a “government money market fund,” as such term is defined in or interpreted under Rule 2a-7 under the Investment Company Act of 1940, as amended (“Investment Company Act”). “Government money market funds” are required to invest at least 99.5% of their assets in (i) cash, (ii) securities issued or guaranteed by the United States or certain U.S. government agencies or instrumentalities and/or (iii) repurchase agreements that are collateralized fully, and are exempt from requirements that permit money market funds to impose a liquidity fee. While the J.P. Morgan Funds’ Board of Trustees (the “Board”) may elect to subject the Fund to liquidity fee requirements in the future, the Board has not elected to do so at this time. A government money market fund may also include investments in other government money market funds as an eligible investment for purposes of the 99.5% requirement above. The Fund’s adviser seeks to develop an appropriate portfolio by considering the differences in yields among securities of different maturities and issue dates.
Summary of Definition of Rule 35d-1 Term in Fund Name [Text Block] The Fund is a money market fund managed in the following manner: ●The Fund seeks to maintain a net asset value (“NAV”) of $1.00 per share. ●The dollar-weighted average maturity of the Fund will be 60 days or less and the dollar-weighted average life to maturity will be 120 days or less. ●The Fund will only buy securities that have remaining maturities of 397 days or less or securities otherwise permitted to be purchased because of maturity shortening provisions under applicable regulation. ●The Fund seeks to invest in securities that present minimal credit risk. The Fund will generally hold a portion of its assets in cash, primarily to meet redemptions. The Fund intends to continue to qualify as a “government money market fund,” as such term is defined in or interpreted under Rule 2a-7 under the Investment Company Act of 1940, as amended (“Investment Company Act”). “Government money market funds” are required to invest at least 99.5% of their assets in (i) cash, (ii) securities issued or guaranteed by the United States or certain U.S. government agencies or instrumentalities and/or (iii) repurchase agreements that are collateralized fully, and are exempt from requirements that permit money market funds to impose a liquidity fee.
Summary of Selection Criteria for Rule 35d-1 Term in Fund Name [Text Block] Under normal conditions, the Fund invests its assets exclusively in obligations of the U.S. Treasury, including Treasury bills, bonds and notes. These investments carry different interest rates, maturities and issue dates. The interest on these securities is generally exempt from state and local income taxes. Ordinarily, the Fund does not buy securities issued or guaranteed by agencies of the U.S. government.
Premier Shares [Member] | JPMorgan Federal Money Market Fund  
Prospectus [Line Items]  
Strategy [Heading] <span style="color:#000000;font-family:Arial Narrow;font-size:11pt;font-weight:bold;">The Fund’s Main Investment Strategy</span>
Strategy Narrative [Text Block] Under normal conditions, the Fund invests its assets exclusively in: ●obligations of the U.S. Treasury, including Treasury bills, bonds and notes, and ●debt securities that certain U.S. government agencies or instrumentalities have either issued or guaranteed as to principal and interest. The interest on these securities is generally exempt from state and local income taxes.The Fund is a money market fund managed in the following manner: ●The Fund seeks to maintain a net asset value (“NAV”) of $1.00 per share. ●The dollar-weighted average maturity of the Fund will be 60 days or less and the dollar-weighted average life to maturity will be 120 days or less. ●The Fund will only buy securities that have remaining maturities of 397 days or less or securities otherwise permitted to be purchased because of maturity shortening provisions under applicable regulation. ●The Fund invests only in U.S. dollar-denominated securities. ●The Fund seeks to invest in securities that present minimal credit risk. The Fund may invest significantly in securities with floating or variable rates of interest. Their yields will vary as interest rates change. The Fund will generally hold a portion of its assets in cash, primarily to meet redemptions. The Fund intends to continue to qualify as a “government money market fund,” as such term is defined in or interpreted under Rule 2a-7 under the Investment Company Act of 1940, as amended (“Investment Company Act”). “Government money market funds” are required to invest at least 99.5% of their assets in (i) cash, (ii) securities issued or guaranteed by the United States or certain U.S. government agencies or instrumentalities and/or (iii) repurchase agreements that are collateralized fully, and are exempt from requirements that permit money market funds to impose a liquidity fee. While the J.P. Morgan Funds’ Board of Trustees (the “Board”) may elect to subject the Fund to liquidity fee requirements in the future, the Board has not elected to do so at this time. A government money market fund may also include investments in other government money market funds as an eligible investment for purposes of the 99.5% requirement above. The Fund may trade securities on a when-issued, delayed settlement or forward commitment basis. The Fund’s adviser seeks to develop an appropriate portfolio by considering the differences in yields among securities of different maturities, market sectors and issuers.
Summary of Definition of Rule 35d-1 Term in Fund Name [Text Block] The Fund is a money market fund managed in the following manner: ●The Fund seeks to maintain a net asset value (“NAV”) of $1.00 per share. ●The dollar-weighted average maturity of the Fund will be 60 days or less and the dollar-weighted average life to maturity will be 120 days or less. ●The Fund will only buy securities that have remaining maturities of 397 days or less or securities otherwise permitted to be purchased because of maturity shortening provisions under applicable regulation. ●The Fund invests only in U.S. dollar-denominated securities. ●The Fund seeks to invest in securities that present minimal credit risk. The Fund may invest significantly in securities with floating or variable rates of interest. Their yields will vary as interest rates change. The Fund will generally hold a portion of its assets in cash, primarily to meet redemptions. The Fund intends to continue to qualify as a “government money market fund,” as such term is defined in or interpreted under Rule 2a-7 under the Investment Company Act of 1940, as amended (“Investment Company Act”). “Government money market funds” are required to invest at least 99.5% of their assets in (i) cash, (ii) securities issued or guaranteed by the United States or certain U.S. government agencies or instrumentalities and/or (iii) repurchase agreements that are collateralized fully, and are exempt from requirements that permit money market funds to impose a liquidity fee.
Summary of Selection Criteria for Rule 35d-1 Term in Fund Name [Text Block] Under normal conditions, the Fund invests its assets exclusively in: ●obligations of the U.S. Treasury, including Treasury bills, bonds and notes, and ●debt securities that certain U.S. government agencies or instrumentalities have either issued or guaranteed as to principal and interest. The interest on these securities is generally exempt from state and local income taxes.
Premier Shares [Member] | JPMorgan California Municipal Money Market Fund  
Prospectus [Line Items]  
Strategy [Heading] <span style="color:#000000;font-family:Arial Narrow;font-size:11pt;font-weight:bold;">The Fund’s Main Investment Strategy</span>
Strategy Narrative [Text Block] Under normal conditions, the Fund invests primarily in municipal obligations, the interest on which is excluded from gross income for federal income tax purposes, exempt from California personal income taxes and is not subject to the federal alternative minimum tax on individuals.As a fundamental policy, the Fund normally invests at least 80% of the value of its Assets in such municipal obligations. For purposes of this policy, “Assets” means net assets, plus the amount of borrowings for investment purposes. For purposes of the 80% policy above, the Fund will only invest in municipal obligations if the issuer receives assurances from legal counsel that the interest payable on the securities is excluded from gross income for federal income tax purposes, exempt from California personal income taxes and is not subject to the federal alternative minimum tax on individuals. Municipal obligations in which the Fund may invest are securities that are issued by the State of California, its political subdivisions, authorities, and agencies, as well as by Puerto Rico, other U.S. territories and their political subdivisions.The Fund generally invests in short-term money market instruments, such as private activity and industrial development bonds, tax anticipation notes, municipal lease obligations and participations in pools of municipal obligations. In addition to purchasing municipal obligations directly, the Fund may invest in municipal obligations by (1) purchasing instruments evidencing direct ownership of interest payments or principal payments, or both, on municipal obligations, such as tender option bonds, or (2) purchasing participation interests in all or part of specific holdings of municipal obligations, provided that the applicable issuer receives assurances from legal counsel that the interest payable on the securities is excluded from gross income for federal income tax purposes, exempt from California personal income taxes and is not subject to the federal alternative minimum tax on individuals. Up to 20% of the Fund’s total assets may be invested in investments subject to California personal income taxes, or in securities subject to federal income tax or the federal alternative minimum tax, such as taxable money market instruments or repurchase agreements. The Fund is a money market fund managed in the following manner: ●The Fund seeks to maintain a net asset value (“NAV”) of $1.00 per share. ●The dollar-weighted average maturity of the Fund will be 60 days or less and the dollar-weighted average life to maturity will be 120 days or less. ●The Fund will only buy securities that have remaining maturities of 397 days or less or securities otherwise permitted to be purchased because of maturity shortening provisions under applicable regulation. ●The Fund invests only in U.S. dollar-denominated securities. ●The Fund seeks to invest in securities that present minimal credit risk.The Fund may invest significantly in securities with floating or variable rates of interest. Their yields will vary as interest rates change. The Fund will at times hold some of its assets in cash. The Fund’s adviser seeks to develop an appropriate portfolio by considering the differences in yields among securities of different maturities, market sectors and issuers. Applicable Money Market Fund Regulations Under the Securities and Exchange Commission (“SEC”) rules that govern the operation of registered money market funds (“MMFs”), MMFs that qualify as “retail” (“Retail MMFs”) or “government” (“Government MMFs”) are permitted to utilize amortized cost to value their portfolio securities and to transact at their existing $1.00 share price. MMFs that do not qualify as Retail MMFs or Government MMFs (collectively, “Institutional MMFs”) are required to price and transact in their shares at NAV reflecting current market-based values of their portfolio securities (i.e., at a “floating NAV”). The Fund intends to qualify as a Retail MMF. Liquidity Fees The Fund’s policies and procedures permit the Fund to impose a discretionary liquidity fee on redemptions of up to 2% of the value of the shares redeemed if the adviser, as the delegate of the Board, determines it is in the best interests of the Fund. Further Developments The Fund may redeem investors that do not satisfy the eligibility requirements for Retail MMF investors. The Fund will provide advance written notification of its intent to make any such involuntary redemptions to the applicable shareholders, which will include more specific information about timing. Neither the Fund nor the adviser will be responsible for any loss in an investor’s account or tax liability resulting from an involuntary redemption.
Summary of Definition of Rule 35d-1 Term in Fund Name [Text Block] The Fund is a money market fund managed in the following manner: ●The Fund seeks to maintain a net asset value (“NAV”) of $1.00 per share. ●The dollar-weighted average maturity of the Fund will be 60 days or less and the dollar-weighted average life to maturity will be 120 days or less. ●The Fund will only buy securities that have remaining maturities of 397 days or less or securities otherwise permitted to be purchased because of maturity shortening provisions under applicable regulation. ●The Fund invests only in U.S. dollar-denominated securities. ●The Fund seeks to invest in securities that present minimal credit risk.
Summary of Selection Criteria for Rule 35d-1 Term in Fund Name [Text Block] Under normal conditions, the Fund invests primarily in municipal obligations, the interest on which is excluded from gross income for federal income tax purposes, exempt from California personal income taxes and is not subject to the federal alternative minimum tax on individuals.
Rule 35d-1 Eighty Percent Investment Policy [Text Block] As a fundamental policy, the Fund normally invests at least 80% of the value of its Assets in such municipal obligations. For purposes of this policy, “Assets” means net assets, plus the amount of borrowings for investment purposes. For purposes of the 80% policy above, the Fund will only invest in municipal obligations if the issuer receives assurances from legal counsel that the interest payable on the securities is excluded from gross income for federal income tax purposes, exempt from California personal income taxes and is not subject to the federal alternative minimum tax on individuals. Municipal obligations in which the Fund may invest are securities that are issued by the State of California, its political subdivisions, authorities, and agencies, as well as by Puerto Rico, other U.S. territories and their political subdivisions.
Premier Shares [Member] | JPMorgan New York Municipal Money Market Fund  
Prospectus [Line Items]  
Strategy [Heading] <span style="color:#000000;font-family:Arial Narrow;font-size:11pt;font-weight:bold;">The Fund’s Main Investment Strategy</span>
Strategy Narrative [Text Block] Under normal conditions, the Fund invests primarily in municipal obligations, the interest on which is excluded from gross income for federal income tax purposes, exempt from New York State and New York City personal income taxes and is not subject to the federal alternative minimum tax on individuals.As a fundamental policy, the Fund normally invests at least 80% of the value of its Assets in such municipal obligations. For purposes of this policy, “Assets” means net assets, plus the amount of borrowings for investment purposes. For purposes of the 80% policy above, the Fund will only invest in municipal obligations if the issuer receives assurances from legal counsel that the interest payable on the securities is excluded from gross income for federal income tax purposes, exempt from New York State and New York City personal income taxes and is not subject to the federal alternative minimum tax on individuals. Municipal obligations in which the Fund may invest are securities that are issued by the State of New York, its political subdivisions, authorities, and agencies, as well as by Puerto Rico, other U.S. territories and their political subdivisions.The Fund generally invests in short-term money market instruments such as private activity and industrial development bonds, tax anticipation notes, municipal lease obligations and participations in pools of municipal obligations. In addition to purchasing municipal obligations directly, the Fund may invest in municipal obligations by (1) purchasing instruments evidencing direct ownership of interest payments or principal payments, or both, on municipal obligations, such as tender option bonds, or (2) purchasing participation interests in all or part of specific holdings of municipal obligations, provided that the applicable issuer receives assurances from legal counsel that the interest payable on the securities is excluded from gross income for federal income tax purposes, exempt from New York State and New York City personal income taxes and is not subject to the federal alternative minimum tax on individuals. Up to 20% of the Fund’s total assets may be invested in investments subject to New York State and/or City personal income taxes, or in securities subject to federal income tax or the federal alternative minimum tax, such as taxable money market instruments or repurchase agreements. The Fund is a money market fund managed in the following manner: ●The Fund seeks to maintain a net asset value (“NAV”) of $1.00 per share. ●The dollar-weighted average maturity of the Fund will be 60 days or less and the dollar-weighted average life to maturity will be 120 days or less. ●The Fund will only buy securities that have remaining maturities of 397 days or less or securities otherwise permitted to be purchased because of maturity shortening provisions under applicable regulation. ●The Fund invests only in U.S. dollar-denominated securities. ●The Fund seeks to invest in securities that present minimal credit risk.The Fund may invest significantly in securities with floating or variable rates of interest. Their yields will vary as interest rates change. The Fund will at times hold some of its assets in cash. The Fund’s adviser seeks to develop an appropriate portfolio by considering the differences in yields among securities of different maturities, market sectors and issuers. Applicable Money Market Fund Regulations Under the Securities and Exchange Commission (“SEC”) rules that govern the operation of registered money market funds (“MMFs”), MMFs that qualify as “retail” (“Retail MMFs”) or “government” (“Government MMFs”) are permitted to utilize amortized cost to value their portfolio securities and to transact at their existing $1.00 share price. MMFs that do not qualify as Retail MMFs or Government MMFs (collectively, “Institutional MMFs”) are required to price and transact in their shares at NAV reflecting current market-based values of their portfolio securities (i.e., at a “floating NAV”). The Fund intends to qualify as a Retail MMF. Liquidity Fees The Fund’s policies and procedures permit the Fund to impose a discretionary liquidity fee on redemptions of up to 2% of the value of the shares redeemed if the adviser, as the delegate of the Board, determines it is in the best interests of the Fund. Further Developments The Fund may redeem investors that do not satisfy the eligibility requirements for Retail MMF investors. The Fund will provide advance written notification of its intent to make any such involuntary redemptions to the applicable shareholders, which will include more specific information about timing. Neither the Fund nor the adviser will be responsible for any loss in an investor’s account or tax liability resulting from an involuntary redemption.
Summary of Definition of Rule 35d-1 Term in Fund Name [Text Block] The Fund is a money market fund managed in the following manner: ●The Fund seeks to maintain a net asset value (“NAV”) of $1.00 per share. ●The dollar-weighted average maturity of the Fund will be 60 days or less and the dollar-weighted average life to maturity will be 120 days or less. ●The Fund will only buy securities that have remaining maturities of 397 days or less or securities otherwise permitted to be purchased because of maturity shortening provisions under applicable regulation. ●The Fund invests only in U.S. dollar-denominated securities. ●The Fund seeks to invest in securities that present minimal credit risk.
Summary of Selection Criteria for Rule 35d-1 Term in Fund Name [Text Block] Under normal conditions, the Fund invests primarily in municipal obligations, the interest on which is excluded from gross income for federal income tax purposes, exempt from New York State and New York City personal income taxes and is not subject to the federal alternative minimum tax on individuals.
Rule 35d-1 Eighty Percent Investment Policy [Text Block] As a fundamental policy, the Fund normally invests at least 80% of the value of its Assets in such municipal obligations. For purposes of this policy, “Assets” means net assets, plus the amount of borrowings for investment purposes. For purposes of the 80% policy above, the Fund will only invest in municipal obligations if the issuer receives assurances from legal counsel that the interest payable on the securities is excluded from gross income for federal income tax purposes, exempt from New York State and New York City personal income taxes and is not subject to the federal alternative minimum tax on individuals. Municipal obligations in which the Fund may invest are securities that are issued by the State of New York, its political subdivisions, authorities, and agencies, as well as by Puerto Rico, other U.S. territories and their political subdivisions.
Premier Shares [Member] | JPMorgan Tax Free Money Market Fund  
Prospectus [Line Items]  
Strategy [Heading] <span style="color:#000000;font-family:Arial Narrow;font-size:11pt;font-weight:bold;">The Fund’s Main Investment Strategy</span>
Strategy Narrative [Text Block] Under normal conditions, the Fund invests primarily in municipal obligations, the interest on which is excluded from federal income taxes.As a fundamental policy, the Fund will invest at least 80% of the value of its Assets in municipal obligations. For purposes of this policy, “Assets” means net assets, plus the amount of borrowings for investment purposes. Municipal obligations are securities that are issued by or on behalf of states, territories and possessions of the United States, including the District of Columbia, and their respective authorities, agencies and other groups with authority to act for the municipalities. The Fund generally invests in short-term money market instruments such as private activity and industrial development bonds, tax anticipation notes, municipal lease obligations and participations in pools of municipal obligations. For purposes of the 80% policy above, the Fund will only invest in municipal obligations if the issuer receives assurances from legal counsel that the interest payable on the securities is exempt from federal income tax.In addition to purchasing municipal obligations directly, the Fund may invest in municipal obligations by (1) purchasing instruments evidencing direct ownership of interest payments or principal payments, or both, on municipal obligations, such as tender option bonds, or (2) purchasing participation interests in all or part of specific holdings of municipal obligations, provided that the applicable issuer receives assurances from legal counsel that the interest payable on the securities is exempt from federal income tax. The remaining 20% of the Fund’s total assets may be invested in securities subject to federal income tax or the federal alternative minimum tax. The Fund is a money market fund managed in the following manner: ●The Fund seeks to maintain a net asset value (“NAV”) of $1.00 per share. ●The dollar-weighted average maturity of the Fund will be 60 days or less and the dollar-weighted average life to maturity will be 120 days or less. ●The Fund will only buy securities that have remaining maturities of 397 days or less or securities otherwise permitted to be purchased because of maturity shortening provisions under applicable regulation. ●The Fund invests only in U.S. dollar-denominated securities. ●The Fund seeks to invest in securities that present minimal credit risk.The Fund may invest significantly in securities with floating or variable rates of interest. Their yields will vary as interest rates change. The Fund will at times hold some of its assets in cash. The Fund’s adviser seeks to develop an appropriate portfolio by considering the differences in yields among securities of different maturities, market sectors and issuers. Applicable Money Market Fund Regulations Under the Securities and Exchange Commission (“SEC”) rules that govern the operation of registered money market funds (“MMFs”), MMFs that qualify as “retail” (“Retail MMFs”) or “government” (“Government MMFs”) are permitted to utilize amortized cost to value their portfolio securities and to transact at their existing $1.00 share price. MMFs that do not qualify as Retail MMFs or Government MMFs (collectively, “Institutional MMFs”) are required to price and transact in their shares at NAV reflecting current market-based values of their portfolio securities (i.e., at a “floating NAV”). The Fund intends to qualify as a Retail MMF. Liquidity Fees The Fund’s policies and procedures permit the Fund to impose a discretionary liquidity fee on redemptions of up to 2% of the value of the shares redeemed if the adviser, as the delegate of the Board, determines it is in the best interests of the Fund. Further Developments The Fund may redeem investors that do not satisfy the eligibility requirements for Retail MMF investors. The Fund will provide advance written notification of its intent to make any such involuntary redemptions to the applicable shareholders, which will include more specific information about timing. Neither the Fund nor the adviser will be responsible for any loss in an investor’s account or tax liability resulting from an involuntary redemption.
Summary of Definition of Rule 35d-1 Term in Fund Name [Text Block] The Fund is a money market fund managed in the following manner: ●The Fund seeks to maintain a net asset value (“NAV”) of $1.00 per share. ●The dollar-weighted average maturity of the Fund will be 60 days or less and the dollar-weighted average life to maturity will be 120 days or less. ●The Fund will only buy securities that have remaining maturities of 397 days or less or securities otherwise permitted to be purchased because of maturity shortening provisions under applicable regulation. ●The Fund invests only in U.S. dollar-denominated securities. ●The Fund seeks to invest in securities that present minimal credit risk.
Summary of Selection Criteria for Rule 35d-1 Term in Fund Name [Text Block] Under normal conditions, the Fund invests primarily in municipal obligations, the interest on which is excluded from federal income taxes.
Rule 35d-1 Eighty Percent Investment Policy [Text Block] As a fundamental policy, the Fund will invest at least 80% of the value of its Assets in municipal obligations. For purposes of this policy, “Assets” means net assets, plus the amount of borrowings for investment purposes. Municipal obligations are securities that are issued by or on behalf of states, territories and possessions of the United States, including the District of Columbia, and their respective authorities, agencies and other groups with authority to act for the municipalities. The Fund generally invests in short-term money market instruments such as private activity and industrial development bonds, tax anticipation notes, municipal lease obligations and participations in pools of municipal obligations. For purposes of the 80% policy above, the Fund will only invest in municipal obligations if the issuer receives assurances from legal counsel that the interest payable on the securities is exempt from federal income tax.
Reserve Shares [Member] | JPMorgan Prime Money Market Fund  
Prospectus [Line Items]  
Strategy [Heading] <span style="color:#000000;font-family:Arial Narrow;font-size:11pt;font-weight:bold;">The Fund’s Main Investment Strategy</span>
Strategy Narrative [Text Block] The Fund invests in high quality, short-term money market instruments which are issued and payable in U.S. dollars. The Fund principally invests in: ●high quality commercial paper and other short-term debt securities, including floating and variable rate demand notes of U.S. and foreign corporations, ●debt securities issued or guaranteed by qualified U.S. and foreign banks, including certificates of deposit, time deposits and other short-term securities, ●securities issued or guaranteed by the U.S. government, its agencies or instrumentalities or Government-Sponsored Enterprises (“GSEs”), ●asset-backed securities, ●repurchase agreements, and ●taxable municipal obligations.The Fund is a money market fund managed in the following manner: ●The Fund calculates its net asset value to four decimals (e.g., $1.0000) using market-based pricing and operates with a floating net asset value. ●The dollar-weighted average maturity of the Fund will be 60 days or less and the dollar-weighted average life to maturity will be 120 days or less. ●The Fund will only buy securities that have remaining maturities of 397 days or less or securities otherwise permitted to be purchased because of maturity shortening provisions under applicable regulation. ●The Fund invests only in U.S. dollar-denominated securities. ●The Fund seeks to invest in securities that present minimal credit risk.The Fund may invest significantly in securities with floating or variable rates of interest. Their yields will vary as interest rates change. The securities in which the Fund may invest include privately placed securities. The Fund will generally hold a portion of its assets in cash, primarily to meet redemptions. The Fund will concentrate its investments in the banking industry. Therefore, under normal conditions, the Fund will invest at least 25% of its total assets in securities issued by companies in the banking industry. The Fund may, however, invest less than 25% of its total assets in this industry as a temporary defensive measure. The Fund may trade securities on a when-issued, delayed settlement or forward commitment basis. The Fund’s adviser seeks to develop an appropriate portfolio by considering the differences in yields among securities of different maturities, market sectors and issuers. Liquidity Fees The Fund’s policies and procedures require the Fund to impose a mandatory liquidity fee if the Fund experiences total daily net redemptions (based on flow information available within a reasonable period after the last computation of the Fund’s net asset value on that day) exceeding 5% of net assets, unless the amount of the mandatory liquidity fee would be de minimis. The size of the mandatory liquidity fee to be charged will be based on a good faith estimate, supported by data, of the costs the Fund would incur if it sold a pro rata amount of each security in its portfolio to satisfy the amount of the net redemptions. If these costs cannot be determined in good faith, a 1% default fee will be applied. If the amount of the mandatory liquidity fee would be de minimis (i.e., less than 0.01% of the value of the shares redeemed), the Fund is not required to charge a mandatory liquidity fee. In addition, the Fund’s policies and procedures permit the Fund to impose a discretionary liquidity fee on redemptions of up to 2% of the value of the shares redeemed if the adviser, as the delegate of the Board, determines it is in the best interests of the Fund.
Summary of Definition of Rule 35d-1 Term in Fund Name [Text Block] The Fund is a money market fund managed in the following manner: ●The Fund calculates its net asset value to four decimals (e.g., $1.0000) using market-based pricing and operates with a floating net asset value. ●The dollar-weighted average maturity of the Fund will be 60 days or less and the dollar-weighted average life to maturity will be 120 days or less. ●The Fund will only buy securities that have remaining maturities of 397 days or less or securities otherwise permitted to be purchased because of maturity shortening provisions under applicable regulation. ●The Fund invests only in U.S. dollar-denominated securities. ●The Fund seeks to invest in securities that present minimal credit risk.
Summary of Selection Criteria for Rule 35d-1 Term in Fund Name [Text Block] The Fund invests in high quality, short-term money market instruments which are issued and payable in U.S. dollars. The Fund principally invests in: ●high quality commercial paper and other short-term debt securities, including floating and variable rate demand notes of U.S. and foreign corporations, ●debt securities issued or guaranteed by qualified U.S. and foreign banks, including certificates of deposit, time deposits and other short-term securities, ●securities issued or guaranteed by the U.S. government, its agencies or instrumentalities or Government-Sponsored Enterprises (“GSEs”), ●asset-backed securities, ●repurchase agreements, and ●taxable municipal obligations.
Strategy Portfolio Concentration [Text] <span style="color:#000000;font-family:Arial Narrow;font-size:10pt;">The Fund will concentrate its investments in the banking industry. Therefore, under normal conditions, the Fund will invest at least 25% of its total assets in securities issued by </span><span style="color:#000000;font-family:Arial Narrow;font-size:10pt;">companies in the banking industry.</span>
Reserve Shares [Member] | JPMorgan 100 U.S. Treasury Securities Money Market Fund  
Prospectus [Line Items]  
Strategy [Heading] <span style="color:#000000;font-family:Arial Narrow;font-size:11pt;font-weight:bold;">The Fund’s Main Investment Strategy</span>
Strategy Narrative [Text Block] Under normal conditions, the Fund invests its assets exclusively in obligations of the U.S. Treasury, including Treasury bills, bonds and notes. These investments carry different interest rates, maturities and issue dates. The interest on these securities is generally exempt from state and local income taxes. Ordinarily, the Fund does not buy securities issued or guaranteed by agencies of the U.S. government.The Fund is a money market fund managed in the following manner: ●The Fund seeks to maintain a net asset value (“NAV”) of $1.00 per share. ●The dollar-weighted average maturity of the Fund will be 60 days or less and the dollar-weighted average life to maturity will be 120 days or less. ●The Fund will only buy securities that have remaining maturities of 397 days or less or securities otherwise permitted to be purchased because of maturity shortening provisions under applicable regulation. ●The Fund seeks to invest in securities that present minimal credit risk. The Fund will generally hold a portion of its assets in cash, primarily to meet redemptions. The Fund intends to continue to qualify as a “government money market fund,” as such term is defined in or interpreted under Rule 2a-7 under the Investment Company Act of 1940, as amended (“Investment Company Act”). “Government money market funds” are required to invest at least 99.5% of their assets in (i) cash, (ii) securities issued or guaranteed by the United States or certain U.S. government agencies or instrumentalities and/or (iii) repurchase agreements that are collateralized fully, and are exempt from requirements that permit money market funds to impose a liquidity fee. While the J.P. Morgan Funds’ Board of Trustees (the “Board”) may elect to subject the Fund to liquidity fee requirements in the future, the Board has not elected to do so at this time. A government money market fund may also include investments in other government money market funds as an eligible investment for purposes of the 99.5% requirement above. The Fund’s adviser seeks to develop an appropriate portfolio by considering the differences in yields among securities of different maturities and issue dates.
Summary of Definition of Rule 35d-1 Term in Fund Name [Text Block] The Fund is a money market fund managed in the following manner: ●The Fund seeks to maintain a net asset value (“NAV”) of $1.00 per share. ●The dollar-weighted average maturity of the Fund will be 60 days or less and the dollar-weighted average life to maturity will be 120 days or less. ●The Fund will only buy securities that have remaining maturities of 397 days or less or securities otherwise permitted to be purchased because of maturity shortening provisions under applicable regulation. ●The Fund seeks to invest in securities that present minimal credit risk. The Fund will generally hold a portion of its assets in cash, primarily to meet redemptions. The Fund intends to continue to qualify as a “government money market fund,” as such term is defined in or interpreted under Rule 2a-7 under the Investment Company Act of 1940, as amended (“Investment Company Act”). “Government money market funds” are required to invest at least 99.5% of their assets in (i) cash, (ii) securities issued or guaranteed by the United States or certain U.S. government agencies or instrumentalities and/or (iii) repurchase agreements that are collateralized fully, and are exempt from requirements that permit money market funds to impose a liquidity fee.
Summary of Selection Criteria for Rule 35d-1 Term in Fund Name [Text Block] Under normal conditions, the Fund invests its assets exclusively in obligations of the U.S. Treasury, including Treasury bills, bonds and notes. These investments carry different interest rates, maturities and issue dates. The interest on these securities is generally exempt from state and local income taxes. Ordinarily, the Fund does not buy securities issued or guaranteed by agencies of the U.S. government.
Reserve Shares [Member] | JPMorgan New York Municipal Money Market Fund  
Prospectus [Line Items]  
Strategy [Heading] <span style="color:#000000;font-family:Arial Narrow;font-size:11pt;font-weight:bold;">The Fund’s Main Investment Strategy</span>
Strategy Narrative [Text Block] Under normal conditions, the Fund invests primarily in municipal obligations, the interest on which is excluded from gross income for federal income tax purposes, exempt from New York State and New York City personal income taxes and is not subject to the federal alternative minimum tax on individuals.As a fundamental policy, the Fund normally invests at least 80% of the value of its Assets in such municipal obligations. For purposes of this policy, “Assets” means net assets, plus the amount of borrowings for investment purposes. For purposes of the 80% policy above, the Fund will only invest in municipal obligations if the issuer receives assurances from legal counsel that the interest payable on the securities is excluded from gross income for federal income tax purposes, exempt from New York State and New York City personal income taxes and is not subject to the federal alternative minimum tax on individuals. Municipal obligations in which the Fund may invest are securities that are issued by the State of New York, its political subdivisions, authorities, and agencies, as well as by Puerto Rico, other U.S. territories and their political subdivisions.The Fund generally invests in short-term money market instruments such as private activity and industrial development bonds, tax anticipation notes, municipal lease obligations and participations in pools of municipal obligations. In addition to purchasing municipal obligations directly, the Fund may invest in municipal obligations by (1) purchasing instruments evidencing direct ownership of interest payments or principal payments, or both, on municipal obligations, such as tender option bonds, or (2) purchasing participation interests in all or part of specific holdings of municipal obligations, provided that the applicable issuer receives assurances from legal counsel that the interest payable on the securities is excluded from gross income for federal income tax purposes, exempt from New York State and New York City personal income taxes and is not subject to the federal alternative minimum tax on individuals. Up to 20% of the Fund’s total assets may be invested in investments subject to New York State and/or City personal income taxes, or in securities subject to federal income tax or the federal alternative minimum tax, such as taxable money market instruments or repurchase agreements. The Fund is a money market fund managed in the following manner: ●The Fund seeks to maintain a net asset value (“NAV”) of $1.00 per share. ●The dollar-weighted average maturity of the Fund will be 60 days or less and the dollar-weighted average life to maturity will be 120 days or less. ●The Fund will only buy securities that have remaining maturities of 397 days or less or securities otherwise permitted to be purchased because of maturity shortening provisions under applicable regulation. ●The Fund invests only in U.S. dollar-denominated securities. ●The Fund seeks to invest in securities that present minimal credit risk.The Fund may invest significantly in securities with floating or variable rates of interest. Their yields will vary as interest rates change. The Fund will at times hold some of its assets in cash. The Fund’s adviser seeks to develop an appropriate portfolio by considering the differences in yields among securities of different maturities, market sectors and issuers. Applicable Money Market Fund Regulations Under the Securities and Exchange Commission (“SEC”) rules that govern the operation of registered money market funds (“MMFs”), MMFs that qualify as “retail” (“Retail MMFs”) or “government” (“Government MMFs”) are permitted to utilize amortized cost to value their portfolio securities and to transact at their existing $1.00 share price. MMFs that do not qualify as Retail MMFs or Government MMFs (collectively, “Institutional MMFs”) are required to price and transact in their shares at NAV reflecting current market-based values of their portfolio securities (i.e., at a “floating NAV”). The Fund intends to qualify as a Retail MMF. Liquidity Fees The Fund’s policies and procedures permit the Fund to impose a discretionary liquidity fee on redemptions of up to 2% of the value of the shares redeemed if the adviser, as the delegate of the Board, determines it is in the best interests of the Fund. Further Developments The Fund may redeem investors that do not satisfy the eligibility requirements for Retail MMF investors. The Fund will provide advance written notification of its intent to make any such involuntary redemptions to the applicable shareholders, which will include more specific information about timing. Neither the Fund nor the adviser will be responsible for any loss in an investor’s account or tax liability resulting from an involuntary redemption.
Summary of Definition of Rule 35d-1 Term in Fund Name [Text Block] The Fund is a money market fund managed in the following manner: ●The Fund seeks to maintain a net asset value (“NAV”) of $1.00 per share. ●The dollar-weighted average maturity of the Fund will be 60 days or less and the dollar-weighted average life to maturity will be 120 days or less. ●The Fund will only buy securities that have remaining maturities of 397 days or less or securities otherwise permitted to be purchased because of maturity shortening provisions under applicable regulation. ●The Fund invests only in U.S. dollar-denominated securities. ●The Fund seeks to invest in securities that present minimal credit risk.
Summary of Selection Criteria for Rule 35d-1 Term in Fund Name [Text Block] Under normal conditions, the Fund invests primarily in municipal obligations, the interest on which is excluded from gross income for federal income tax purposes, exempt from New York State and New York City personal income taxes and is not subject to the federal alternative minimum tax on individuals.
Rule 35d-1 Eighty Percent Investment Policy [Text Block] As a fundamental policy, the Fund normally invests at least 80% of the value of its Assets in such municipal obligations. For purposes of this policy, “Assets” means net assets, plus the amount of borrowings for investment purposes. For purposes of the 80% policy above, the Fund will only invest in municipal obligations if the issuer receives assurances from legal counsel that the interest payable on the securities is excluded from gross income for federal income tax purposes, exempt from New York State and New York City personal income taxes and is not subject to the federal alternative minimum tax on individuals. Municipal obligations in which the Fund may invest are securities that are issued by the State of New York, its political subdivisions, authorities, and agencies, as well as by Puerto Rico, other U.S. territories and their political subdivisions.
Reserve Shares [Member] | JPMorgan Tax Free Money Market Fund  
Prospectus [Line Items]  
Strategy [Heading] <span style="color:#000000;font-family:Arial Narrow;font-size:11pt;font-weight:bold;">The Fund’s Main Investment Strategy</span>
Strategy Narrative [Text Block] Under normal conditions, the Fund invests primarily in municipal obligations, the interest on which is excluded from federal income taxes.As a fundamental policy, the Fund will invest at least 80% of the value of its Assets in municipal obligations. For purposes of this policy, “Assets” means net assets, plus the amount of borrowings for investment purposes. Municipal obligations are securities that are issued by or on behalf of states, territories and possessions of the United States, including the District of Columbia, and their respective authorities, agencies and other groups with authority to act for the municipalities. The Fund generally invests in short-term money market instruments such as private activity and industrial development bonds, tax anticipation notes, municipal lease obligations and participations in pools of municipal obligations. For purposes of the 80% policy above, the Fund will only invest in municipal obligations if the issuer receives assurances from legal counsel that the interest payable on the securities is exempt from federal income tax.In addition to purchasing municipal obligations directly, the Fund may invest in municipal obligations by (1) purchasing instruments evidencing direct ownership of interest payments or principal payments, or both, on municipal obligations, such as tender option bonds, or (2) purchasing participation interests in all or part of specific holdings of municipal obligations, provided that the applicable issuer receives assurances from legal counsel that the interest payable on the securities is exempt from federal income tax. The remaining 20% of the Fund’s total assets may be invested in securities subject to federal income tax or the federal alternative minimum tax. The Fund is a money market fund managed in the following manner: ●The Fund seeks to maintain a net asset value (“NAV”) of $1.00 per share. ●The dollar-weighted average maturity of the Fund will be 60 days or less and the dollar-weighted average life to maturity will be 120 days or less. ●The Fund will only buy securities that have remaining maturities of 397 days or less or securities otherwise permitted to be purchased because of maturity shortening provisions under applicable regulation. ●The Fund invests only in U.S. dollar-denominated securities. ●The Fund seeks to invest in securities that present minimal credit risk.The Fund may invest significantly in securities with floating or variable rates of interest. Their yields will vary as interest rates change. The Fund will at times hold some of its assets in cash. The Fund’s adviser seeks to develop an appropriate portfolio by considering the differences in yields among securities of different maturities, market sectors and issuers. Applicable Money Market Fund Regulations Under the Securities and Exchange Commission (“SEC”) rules that govern the operation of registered money market funds (“MMFs”), MMFs that qualify as “retail” (“Retail MMFs”) or “government” (“Government MMFs”) are permitted to utilize amortized cost to value their portfolio securities and to transact at their existing $1.00 share price. MMFs that do not qualify as Retail MMFs or Government MMFs (collectively, “Institutional MMFs”) are required to price and transact in their shares at NAV reflecting current market-based values of their portfolio securities (i.e., at a “floating NAV”). The Fund intends to qualify as a Retail MMF. Liquidity Fees The Fund’s policies and procedures permit the Fund to impose a discretionary liquidity fee on redemptions of up to 2% of the value of the shares redeemed if the adviser, as the delegate of the Board, determines it is in the best interests of the Fund. Further Developments The Fund may redeem investors that do not satisfy the eligibility requirements for Retail MMF investors. The Fund will provide advance written notification of its intent to make any such involuntary redemptions to the applicable shareholders, which will include more specific information about timing. Neither the Fund nor the adviser will be responsible for any loss in an investor’s account or tax liability resulting from an involuntary redemption.
Summary of Definition of Rule 35d-1 Term in Fund Name [Text Block] The Fund is a money market fund managed in the following manner: ●The Fund seeks to maintain a net asset value (“NAV”) of $1.00 per share. ●The dollar-weighted average maturity of the Fund will be 60 days or less and the dollar-weighted average life to maturity will be 120 days or less. ●The Fund will only buy securities that have remaining maturities of 397 days or less or securities otherwise permitted to be purchased because of maturity shortening provisions under applicable regulation. ●The Fund invests only in U.S. dollar-denominated securities. ●The Fund seeks to invest in securities that present minimal credit risk.
Summary of Selection Criteria for Rule 35d-1 Term in Fund Name [Text Block] Under normal conditions, the Fund invests primarily in municipal obligations, the interest on which is excluded from federal income taxes.
Rule 35d-1 Eighty Percent Investment Policy [Text Block] As a fundamental policy, the Fund will invest at least 80% of the value of its Assets in municipal obligations. For purposes of this policy, “Assets” means net assets, plus the amount of borrowings for investment purposes. Municipal obligations are securities that are issued by or on behalf of states, territories and possessions of the United States, including the District of Columbia, and their respective authorities, agencies and other groups with authority to act for the municipalities. The Fund generally invests in short-term money market instruments such as private activity and industrial development bonds, tax anticipation notes, municipal lease obligations and participations in pools of municipal obligations. For purposes of the 80% policy above, the Fund will only invest in municipal obligations if the issuer receives assurances from legal counsel that the interest payable on the securities is exempt from federal income tax.
Service Shares [Member] | JPMorgan California Municipal Money Market Fund  
Prospectus [Line Items]  
Strategy [Heading] <span style="color:#000000;font-family:Arial Narrow;font-size:11pt;font-weight:bold;">The Fund’s Main Investment Strategy</span>
Strategy Narrative [Text Block] Under normal conditions, the Fund invests primarily in municipal obligations, the interest on which is excluded from gross income for federal income tax purposes, exempt from California personal income taxes and is not subject to the federal alternative minimum tax on individuals.As a fundamental policy, the Fund normally invests at least 80% of the value of its Assets in such municipal obligations. For purposes of this policy, “Assets” means net assets, plus the amount of borrowings for investment purposes. For purposes of the 80% policy above, the Fund will only invest in municipal obligations if the issuer receives assurances from legal counsel that the interest payable on the securities is excluded from gross income for federal income tax purposes, exempt from California personal income taxes and is not subject to the federal alternative minimum tax on individuals. Municipal obligations in which the Fund may invest are securities that are issued by the State of California, its political subdivisions, authorities, and agencies, as well as by Puerto Rico, other U.S. territories and their political subdivisions.The Fund generally invests in short-term money market instruments, such as private activity and industrial development bonds, tax anticipation notes, municipal lease obligations and participations in pools of municipal obligations. In addition to purchasing municipal obligations directly, the Fund may invest in municipal obligations by (1) purchasing instruments evidencing direct ownership of interest payments or principal payments, or both, on municipal obligations, such as tender option bonds, or (2) purchasing participation interests in all or part of specific holdings of municipal obligations, provided that the applicable issuer receives assurances from legal counsel that the interest payable on the securities is excluded from gross income for federal income tax purposes, exempt from California personal income taxes and is not subject to the federal alternative minimum tax on individuals. Up to 20% of the Fund’s total assets may be invested in investments subject to California personal income taxes, or in securities subject to federal income tax or the federal alternative minimum tax, such as taxable money market instruments or repurchase agreements. The Fund is a money market fund managed in the following manner: ●The Fund seeks to maintain a net asset value (“NAV”) of $1.00 per share. ●The dollar-weighted average maturity of the Fund will be 60 days or less and the dollar-weighted average life to maturity will be 120 days or less. ●The Fund will only buy securities that have remaining maturities of 397 days or less or securities otherwise permitted to be purchased because of maturity shortening provisions under applicable regulation. ●The Fund invests only in U.S. dollar-denominated securities. ●The Fund seeks to invest in securities that present minimal credit risk.The Fund may invest significantly in securities with floating or variable rates of interest. Their yields will vary as interest rates change. The Fund will at times hold some of its assets in cash. The Fund’s adviser seeks to develop an appropriate portfolio by considering the differences in yields among securities of different maturities, market sectors and issuers. Applicable Money Market Fund Regulations Under the Securities and Exchange Commission (“SEC”) rules that govern the operation of registered money market funds (“MMFs”), MMFs that qualify as “retail” (“Retail MMFs”) or “government” (“Government MMFs”) are permitted to utilize amortized cost to value their portfolio securities and to transact at their existing $1.00 share price. MMFs that do not qualify as Retail MMFs or Government MMFs (collectively, “Institutional MMFs”) are required to price and transact in their shares at NAV reflecting current market-based values of their portfolio securities (i.e., at a “floating NAV”). The Fund intends to qualify as a Retail MMF. Liquidity Fees The Fund’s policies and procedures permit the Fund to impose a discretionary liquidity fee on redemptions of up to 2% of the value of the shares redeemed if the adviser, as the delegate of the Board, determines it is in the best interests of the Fund. Further Developments The Fund may redeem investors that do not satisfy the eligibility requirements for Retail MMF investors. The Fund will provide advance written notification of its intent to make any such involuntary redemptions to the applicable shareholders, which will include more specific information about timing. Neither the Fund nor the adviser will be responsible for any loss in an investor’s account or tax liability resulting from an involuntary redemption.
Summary of Definition of Rule 35d-1 Term in Fund Name [Text Block] The Fund is a money market fund managed in the following manner: ●The Fund seeks to maintain a net asset value (“NAV”) of $1.00 per share. ●The dollar-weighted average maturity of the Fund will be 60 days or less and the dollar-weighted average life to maturity will be 120 days or less. ●The Fund will only buy securities that have remaining maturities of 397 days or less or securities otherwise permitted to be purchased because of maturity shortening provisions under applicable regulation. ●The Fund invests only in U.S. dollar-denominated securities. ●The Fund seeks to invest in securities that present minimal credit risk.
Summary of Selection Criteria for Rule 35d-1 Term in Fund Name [Text Block] Under normal conditions, the Fund invests primarily in municipal obligations, the interest on which is excluded from gross income for federal income tax purposes, exempt from California personal income taxes and is not subject to the federal alternative minimum tax on individuals.
Rule 35d-1 Eighty Percent Investment Policy [Text Block] As a fundamental policy, the Fund normally invests at least 80% of the value of its Assets in such municipal obligations. For purposes of this policy, “Assets” means net assets, plus the amount of borrowings for investment purposes. For purposes of the 80% policy above, the Fund will only invest in municipal obligations if the issuer receives assurances from legal counsel that the interest payable on the securities is excluded from gross income for federal income tax purposes, exempt from California personal income taxes and is not subject to the federal alternative minimum tax on individuals. Municipal obligations in which the Fund may invest are securities that are issued by the State of California, its political subdivisions, authorities, and agencies, as well as by Puerto Rico, other U.S. territories and their political subdivisions.
Service Shares [Member] | JPMorgan New York Municipal Money Market Fund  
Prospectus [Line Items]  
Strategy [Heading] <span style="color:#000000;font-family:Arial Narrow;font-size:11pt;font-weight:bold;">The Fund’s Main Investment Strategy</span>
Strategy Narrative [Text Block] Under normal conditions, the Fund invests primarily in municipal obligations, the interest on which is excluded from gross income for federal income tax purposes, exempt from New York State and New York City personal income taxes and is not subject to the federal alternative minimum tax on individuals.As a fundamental policy, the Fund normally invests at least 80% of the value of its Assets in such municipal obligations. For purposes of this policy, “Assets” means net assets, plus the amount of borrowings for investment purposes. For purposes of the 80% policy above, the Fund will only invest in municipal obligations if the issuer receives assurances from legal counsel that the interest payable on the securities is excluded from gross income for federal income tax purposes, exempt from New York State and New York City personal income taxes and is not subject to the federal alternative minimum tax on individuals. Municipal obligations in which the Fund may invest are securities that are issued by the State of New York, its political subdivisions, authorities, and agencies, as well as by Puerto Rico, other U.S. territories and their political subdivisions.The Fund generally invests in short-term money market instruments such as private activity and industrial development bonds, tax anticipation notes, municipal lease obligations and participations in pools of municipal obligations. In addition to purchasing municipal obligations directly, the Fund may invest in municipal obligations by (1) purchasing instruments evidencing direct ownership of interest payments or principal payments, or both, on municipal obligations, such as tender option bonds, or (2) purchasing participation interests in all or part of specific holdings of municipal obligations, provided that the applicable issuer receives assurances from legal counsel that the interest payable on the securities is excluded from gross income for federal income tax purposes, exempt from New York State and New York City personal income taxes and is not subject to the federal alternative minimum tax on individuals. Up to 20% of the Fund’s total assets may be invested in investments subject to New York State and/or City personal income taxes, or in securities subject to federal income tax or the federal alternative minimum tax, such as taxable money market instruments or repurchase agreements. The Fund is a money market fund managed in the following manner: ●The Fund seeks to maintain a net asset value (“NAV”) of $1.00 per share. ●The dollar-weighted average maturity of the Fund will be 60 days or less and the dollar-weighted average life to maturity will be 120 days or less. ●The Fund will only buy securities that have remaining maturities of 397 days or less or securities otherwise permitted to be purchased because of maturity shortening provisions under applicable regulation. ●The Fund invests only in U.S. dollar-denominated securities. ●The Fund seeks to invest in securities that present minimal credit risk.The Fund may invest significantly in securities with floating or variable rates of interest. Their yields will vary as interest rates change. The Fund will at times hold some of its assets in cash. The Fund’s adviser seeks to develop an appropriate portfolio by considering the differences in yields among securities of different maturities, market sectors and issuers. Applicable Money Market Fund Regulations Under the Securities and Exchange Commission (“SEC”) rules that govern the operation of registered money market funds (“MMFs”), MMFs that qualify as “retail” (“Retail MMFs”) or “government” (“Government MMFs”) are permitted to utilize amortized cost to value their portfolio securities and to transact at their existing $1.00 share price. MMFs that do not qualify as Retail MMFs or Government MMFs (collectively, “Institutional MMFs”) are required to price and transact in their shares at NAV reflecting current market-based values of their portfolio securities (i.e., at a “floating NAV”). The Fund intends to qualify as a Retail MMF. Liquidity Fees The Fund’s policies and procedures permit the Fund to impose a discretionary liquidity fee on redemptions of up to 2% of the value of the shares redeemed if the adviser, as the delegate of the Board, determines it is in the best interests of the Fund. Further Developments The Fund may redeem investors that do not satisfy the eligibility requirements for Retail MMF investors. The Fund will provide advance written notification of its intent to make any such involuntary redemptions to the applicable shareholders, which will include more specific information about timing. Neither the Fund nor the adviser will be responsible for any loss in an investor’s account or tax liability resulting from an involuntary redemption.
Summary of Definition of Rule 35d-1 Term in Fund Name [Text Block] The Fund is a money market fund managed in the following manner: ●The Fund seeks to maintain a net asset value (“NAV”) of $1.00 per share. ●The dollar-weighted average maturity of the Fund will be 60 days or less and the dollar-weighted average life to maturity will be 120 days or less. ●The Fund will only buy securities that have remaining maturities of 397 days or less or securities otherwise permitted to be purchased because of maturity shortening provisions under applicable regulation. ●The Fund invests only in U.S. dollar-denominated securities. ●The Fund seeks to invest in securities that present minimal credit risk.
Summary of Selection Criteria for Rule 35d-1 Term in Fund Name [Text Block] Under normal conditions, the Fund invests primarily in municipal obligations, the interest on which is excluded from gross income for federal income tax purposes, exempt from New York State and New York City personal income taxes and is not subject to the federal alternative minimum tax on individuals.
Rule 35d-1 Eighty Percent Investment Policy [Text Block] As a fundamental policy, the Fund normally invests at least 80% of the value of its Assets in such municipal obligations. For purposes of this policy, “Assets” means net assets, plus the amount of borrowings for investment purposes. For purposes of the 80% policy above, the Fund will only invest in municipal obligations if the issuer receives assurances from legal counsel that the interest payable on the securities is excluded from gross income for federal income tax purposes, exempt from New York State and New York City personal income taxes and is not subject to the federal alternative minimum tax on individuals. Municipal obligations in which the Fund may invest are securities that are issued by the State of New York, its political subdivisions, authorities, and agencies, as well as by Puerto Rico, other U.S. territories and their political subdivisions.
I Shares [Member] | JPMorgan Managed Income Fund  
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 mainly invests in investment grade, U.S. dollar denominated short-term fixed and floating rate debt securities. As part of its principal investment strategy, the Fund may invest in corporate securities, asset-backed securities and high quality money market instruments such as commercial paper, certificates of deposit, time deposits, deposit notes and bank notes. The Fund may also invest in U.S. Treasury securities (including Separate Trading of Registered Interest and Principal of Securities (STRIPS)), securities issued or guaranteed by the U.S. government or its agencies and instrumentalities, securities issued or guaranteed by supranational organizations, securities issued or guaranteed by foreign governments, repurchase agreements, and Rule 144A securities. All securities will be U.S. dollar-denominated although they may be issued by a foreign corporation or a U.S. affiliate of a foreign corporation, or a foreign government or its agencies and instrumentalities.The Fund will concentrate its investments in the banking industry. Therefore, under normal conditions, the Fund will invest more than 25% of its assets in securities issued by companies in the banking industry. The Fund may, however, invest less than 25% of its assets in this industry as a temporary defensive measure.All of the Fund’s investments will carry a minimum short-term rating of P-2, A-2 or F2 or better by Moody’s Investors Service Inc. (Moody’s), S&P Global Ratings (S&P), or Fitch Ratings (Fitch), respectively, or the equivalent by another nationally recognized statistical rating organization (NRSRO), or a minimum long-term rating of Baa3, BBB–, or BBB– by Moody’s, S&P, or Fitch, respectively, or the equivalent by another NRSRO at the time of investment or if such investments are unrated, deemed by J.P. Morgan Investment Management Inc. (JPMIM or the adviser) to be of comparable quality at the time of investment.Under normal circumstances, the Fund’s duration will not exceed one year. The Fund has flexibility to invest in derivatives and may use such instruments as substitutes for securities in which the Fund can invest. Derivatives are instruments which have a value based on another instrument, exchange rate or index. Although the use of derivatives is not a main strategy of the Fund under normal market conditions, the Fund may use futures contracts, options, swaps, and forward contracts in connection with its principal strategies in certain market conditions in order to hedge various investments, for risk management purposes and/or to increase income or gain to the Fund. The adviser allocates the Fund’s assets among a range of sectors based on strategic positioning that focuses on factors expected to impact returns over the long term and other tactical considerations that focus on factors that are expected to impact returns over the short to medium term. In buying and selling investments for the Fund, the adviser looks for market sectors and individual securities that it believes will perform well over time. The adviser selects individual securities after performing a risk/reward analysis that includes an evaluation of their characteristics including income, interest rate risk, credit risk and the complex legal and technical structure of the transaction. The Fund may enter into lending agreements under which the Fund would lend money for temporary purposes directly to another J.P. Morgan Fund through a credit facility, subject to meeting the conditions of an SEC exemptive order granted to the Fund permitting such interfund lending. The Fund is not a money market fund and is not subject to the special regulatory requirements (including maturity and credit quality constraints) designed to enable money market funds to maintain a stable share price.
Summary of Selection Criteria for Rule 35d-1 Term in Fund Name [Text Block] The Fund mainly invests in investment grade, U.S. dollar denominated short-term fixed and floating rate debt securities. As part of its principal investment strategy, the Fund may invest in corporate securities, asset-backed securities and high quality money market instruments such as commercial paper, certificates of deposit, time deposits, deposit notes and bank notes. The Fund may also invest in U.S. Treasury securities (including Separate Trading of Registered Interest and Principal of Securities (STRIPS)), securities issued or guaranteed by the U.S. government or its agencies and instrumentalities, securities issued or guaranteed by supranational organizations, securities issued or guaranteed by foreign governments, repurchase agreements, and Rule 144A securities. All securities will be U.S. dollar-denominated although they may be issued by a foreign corporation or a U.S. affiliate of a foreign corporation, or a foreign government or its agencies and instrumentalities.
Strategy Portfolio Concentration [Text] <span style="color:#000000;font-family:Arial Narrow;font-size:10pt;">The Fund will concentrate its investments in the banking industry. Therefore, under normal conditions, the Fund will invest more than 25% of its assets in securities issued by companies in the banking industry. The Fund may, however, invest less than 25% of its assets in this industry as a temporary defensive measure.</span>
L Shares [Member] | JPMorgan Managed Income Fund  
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 mainly invests in investment grade, U.S. dollar denominated short-term fixed and floating rate debt securities. As part of its principal investment strategy, the Fund may invest in corporate securities, asset-backed securities and high quality money market instruments such as commercial paper, certificates of deposit, time deposits, deposit notes and bank notes. The Fund may also invest in U.S. Treasury securities (including Separate Trading of Registered Interest and Principal of Securities (STRIPS)), securities issued or guaranteed by the U.S. government or its agencies and instrumentalities, securities issued or guaranteed by supranational organizations, securities issued or guaranteed by foreign governments, repurchase agreements, and Rule 144A securities. All securities will be U.S. dollar-denominated although they may be issued by a foreign corporation or a U.S. affiliate of a foreign corporation, or a foreign government or its agencies and instrumentalities.The Fund will concentrate its investments in the banking industry. Therefore, under normal conditions, the Fund will invest more than 25% of its assets in securities issued by companies in the banking industry. The Fund may, however, invest less than 25% of its assets in this industry as a temporary defensive measure.All of the Fund’s investments will carry a minimum short-term rating of P-2, A-2 or F2 or better by Moody’s Investors Service Inc. (Moody’s), S&P Global Ratings (S&P), or Fitch Ratings (Fitch), respectively, or the equivalent by another nationally recognized statistical rating organization (NRSRO), or a minimum long-term rating of Baa3, BBB–, or BBB– by Moody’s, S&P, or Fitch, respectively, or the equivalent by another NRSRO at the time of investment or if such investments are unrated, deemed by J.P. Morgan Investment Management Inc. (JPMIM or the adviser) to be of comparable quality at the time of investment.Under normal circumstances, the Fund’s duration will not exceed one year. The Fund has flexibility to invest in derivatives and may use such instruments as substitutes for securities in which the Fund can invest. Derivatives are instruments which have a value based on another instrument, exchange rate or index. Although the use of derivatives is not a main strategy of the Fund under normal market conditions, the Fund may use futures contracts, options, swaps, and forward contracts in connection with its principal strategies in certain market conditions in order to hedge various investments, for risk management purposes and/or to increase income or gain to the Fund. The adviser allocates the Fund’s assets among a range of sectors based on strategic positioning that focuses on factors expected to impact returns over the long term and other tactical considerations that focus on factors that are expected to impact returns over the short to medium term. In buying and selling investments for the Fund, the adviser looks for market sectors and individual securities that it believes will perform well over time. The adviser selects individual securities after performing a risk/reward analysis that includes an evaluation of their characteristics including income, interest rate risk, credit risk and the complex legal and technical structure of the transaction. The Fund may enter into lending agreements under which the Fund would lend money for temporary purposes directly to another J.P. Morgan Fund through a credit facility, subject to meeting the conditions of an SEC exemptive order granted to the Fund permitting such interfund lending. The Fund is not a money market fund and is not subject to the special regulatory requirements (including maturity and credit quality constraints) designed to enable money market funds to maintain a stable share price.
Summary of Selection Criteria for Rule 35d-1 Term in Fund Name [Text Block] The Fund mainly invests in investment grade, U.S. dollar denominated short-term fixed and floating rate debt securities. As part of its principal investment strategy, the Fund may invest in corporate securities, asset-backed securities and high quality money market instruments such as commercial paper, certificates of deposit, time deposits, deposit notes and bank notes. The Fund may also invest in U.S. Treasury securities (including Separate Trading of Registered Interest and Principal of Securities (STRIPS)), securities issued or guaranteed by the U.S. government or its agencies and instrumentalities, securities issued or guaranteed by supranational organizations, securities issued or guaranteed by foreign governments, repurchase agreements, and Rule 144A securities. All securities will be U.S. dollar-denominated although they may be issued by a foreign corporation or a U.S. affiliate of a foreign corporation, or a foreign government or its agencies and instrumentalities.
Strategy Portfolio Concentration [Text] <span style="color:#000000;font-family:Arial Narrow;font-size:10pt;">The Fund will concentrate its investments in the banking industry. Therefore, under normal conditions, the Fund will invest more than 25% of its assets in securities issued by companies in the banking industry. The Fund may, however, invest less than 25% of its assets in this industry as a temporary defensive measure.</span>