JPMorgan Municipal Money Market Fund Expense Example - Institutional Shares [Member] - JPMorgan Municipal Money Market Fund - Institutional	Feb. 28, 2026 USD ($)
Prospectus [Line Items]
Expense Example, with Redemption, 1 Year	$ 22
Expense Example, with Redemption, 3 Years	72
Expense Example, with Redemption, 5 Years	127
Expense Example, with Redemption, 10 Years	$ 291

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