v3.26.3
JPMorgan U.S. Small Company Fund Class L Annual Fund Operating Expenses - L Shares [Member] - JPMorgan U.S. Small Company Fund Class L - Class L
Jun. 30, 2026
Prospectus [Line Items]  
Management Fees (as a percentage of Assets) 0.60%
Distribution and Service (12b-1) Fees 0.00%
Component2 Other Expenses 0.10%
Component3 Other Expenses 0.12%
Other Expenses (as a percentage of Assets): 0.22%
Expenses (as a percentage of Assets) 0.82%