v3.26.1
JPMorgan Core Bond Fund Expense Example - R2 R3 R4 R5 R6 Shares [Member] - JPMorgan Core Bond Fund
Feb. 28, 2026
USD ($)
Class R2  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year $ 107
Expense Example, with Redemption, 3 Years 345
Expense Example, with Redemption, 5 Years 601
Expense Example, with Redemption, 10 Years 1,336
Class R3  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 82
Expense Example, with Redemption, 3 Years 264
Expense Example, with Redemption, 5 Years 462
Expense Example, with Redemption, 10 Years 1,033
Class R4  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 56
Expense Example, with Redemption, 3 Years 185
Expense Example, with Redemption, 5 Years 325
Expense Example, with Redemption, 10 Years 734
Class R5  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 41
Expense Example, with Redemption, 3 Years 137
Expense Example, with Redemption, 5 Years 242
Expense Example, with Redemption, 10 Years 551
Class R6  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 31
Expense Example, with Redemption, 3 Years 105
Expense Example, with Redemption, 5 Years 187
Expense Example, with Redemption, 10 Years $ 427