JPMorgan U.S. Small Company Fund Average Annual Total Returns - A C I 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 A | |||
| Prospectus [Line Items] | |||
| Average Annual Return, Percent | 4.00% | 6.00% | 8.15% |
| Class C | |||
| Prospectus [Line Items] | |||
| Average Annual Return, Percent | 8.24% | 6.61% | 8.28% |
| Class I | |||
| Prospectus [Line Items] | |||
| Average Annual Return, Percent | 10.09% | 7.43% | 9.01% |
| Class I | After Taxes on Distributions | |||
| Prospectus [Line Items] | |||
| Average Annual Return, Percent | 8.22% | 4.93% | 7.15% |
| Class I | After Taxes on Distributions and Sales | |||
| Prospectus [Line Items] | |||
| Average Annual Return, Percent | 7.42% | 5.32% | 6.86% |