JPMorgan California Municipal Money Market Fund Expense Example - Agency Shares [Member] - JPMorgan California Municipal Money Market Fund - Agency	Feb. 28, 2026 USD ($)
Prospectus [Line Items]
Expense Example, with Redemption, 1 Year	$ 27
Expense Example, with Redemption, 3 Years	103
Expense Example, with Redemption, 5 Years	187
Expense Example, with Redemption, 10 Years	$ 434

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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