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JPMorgan Institutional Tax Free Money Market Fund Annual Total Returns
12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Agency Shares [Member] | JPMorgan Institutional Tax Free Money Market Fund | Agency              
Prospectus [Line Items]              
Annual Return [Percent] 2.44% 3.11% 3.06% 0.94% none 0.42% 1.25%