v3.26.3
JPMorgan SMID Cap Equity Fund Expense Example - R3 R4 R6 Shares [Member] - JPMorgan SMID Cap Equity Fund
Jun. 30, 2026
USD ($)
Class R3  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year $ 111
Expense Example, with Redemption, 3 Years 385
Expense Example, with Redemption, 5 Years 680
Expense Example, with Redemption, 10 Years 1,518
Class R6  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 60
Expense Example, with Redemption, 3 Years 215
Expense Example, with Redemption, 5 Years 383
Expense Example, with Redemption, 10 Years $ 871