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JPMorgan Core Plus Bond Fund Average Annual Total Returns - R2 R3 R4 R5 R6 Shares [Member]
12 Months Ended 60 Months Ended 120 Months Ended
Dec. 31, 2025
Dec. 31, 2025
Dec. 31, 2025
BLOOMBERG US AGGREGATE INDEX(Reflects No Deduction for Fees, Expenses, or Taxes)[Member]      
Prospectus [Line Items]      
Average Annual Return, Percent 7.30% (0.36%) 2.01%
Class R2      
Prospectus [Line Items]      
Average Annual Return, Percent 7.25% (0.14%) 2.03%
Class R3      
Prospectus [Line Items]      
Average Annual Return, Percent 7.54% 0.09% 2.28%
Class R4      
Prospectus [Line Items]      
Average Annual Return, Percent 7.81% 0.34% 2.53%
Class R5      
Prospectus [Line Items]      
Average Annual Return, Percent 7.95% 0.51% 2.70%
Class R6      
Prospectus [Line Items]      
Average Annual Return, Percent 8.06% 0.63% 2.79%
Class R6 | After Taxes on Distributions      
Prospectus [Line Items]      
Average Annual Return, Percent 5.89% (1.03%) 1.26%
Class R6 | After Taxes on Distributions and Sales      
Prospectus [Line Items]      
Average Annual Return, Percent 4.73% (0.24%) 1.49%