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JPMorgan Institutional Tax Free Money Market Fund Average Annual Total Returns - IM Shares [Member] - IM
12 Months Ended 60 Months Ended 94 Months Ended
Feb. 28, 2026
Dec. 31, 2025
Dec. 31, 2025
Dec. 31, 2025
Prospectus [Line Items]        
Average Annual Return, Percent   2.57% 2.00% 1.65%
Performance Inception Date Mar. 01, 2018