JPMorgan U.S. Small Company Fund Class L Average Annual Total Returns - L Shares [Member] |
12 Months Ended | 60 Months Ended | 120 Months Ended |
|---|---|---|---|
Dec. 31, 2025 |
Dec. 31, 2025 |
Dec. 31, 2025 |
|
| RUSSELL 3000 INDEX(Reflects No Deduction for Fees, Expenses, or Taxes)[Member] | |||
| Prospectus [Line Items] | |||
| Average Annual Return, Percent | 17.15% | 13.15% | 14.29% |
| RUSSELL 2000 INDEX(Reflects No Deduction for Fees, Expenses, or Taxes)[Member] | |||
| Prospectus [Line Items] | |||
| Average Annual Return, Percent | 12.81% | 6.09% | 9.62% |
| Class L | |||
| Prospectus [Line Items] | |||
| Average Annual Return, Percent | 10.18% | 7.56% | 9.17% |
| Class L | After Taxes on Distributions | |||
| Prospectus [Line Items] | |||
| Average Annual Return, Percent | 8.27% | 5.02% | 7.26% |
| Class L | After Taxes on Distributions and Sales | |||
| Prospectus [Line Items] | |||
| Average Annual Return, Percent | 7.50% | 5.41% | 6.98% |