S000004344 [Member] Average Annual Total Returns |
12 Months Ended | 60 Months Ended | 120 Months Ended | 307 Months Ended |
|---|---|---|---|---|
Dec. 31, 2025 |
Dec. 31, 2025 |
Dec. 31, 2025 |
Dec. 31, 2025 |
|
| Russell 3000 Index (Returns do not reflect deductions for fees, expenses or taxes) | ||||
| Prospectus [Line Items] | ||||
| Average Annual Return, Percent | 17.15% | 13.15% | 14.29% | |
| Russell 2000 Index (Returns do not reflect deductions for fees, expenses or taxes) | ||||
| Prospectus [Line Items] | ||||
| Average Annual Return, Percent | 12.81% | 6.09% | 9.62% | |
| iShares Russell 2000 ETF | ||||
| Prospectus [Line Items] | ||||
| Average Annual Return, Percent | 12.69% | 5.96% | 9.54% | |
| Performance Inception Date | May 22, 2000 | |||
| iShares Russell 2000 ETF | After Taxes on Distributions | ||||
| Prospectus [Line Items] | ||||
| Average Annual Return, Percent | 12.35% | 5.61% | 9.14% | |
| iShares Russell 2000 ETF | After Taxes on Distributions and Sales | ||||
| Prospectus [Line Items] | ||||
| Average Annual Return, Percent | 7.66% | 4.57% | 7.70% |