S000004343 [Member] Average Annual Total Returns |
12 Months Ended | 60 Months Ended | 120 Months Ended | 305 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 Growth Index (Returns do not reflect deductions for fees, expenses or taxes) | ||||
| Prospectus [Line Items] | ||||
| Average Annual Return, Percent | 13.01% | 3.18% | 9.57% | |
| iShares Russell 2000 Growth ETF | ||||
| Prospectus [Line Items] | ||||
| Average Annual Return, Percent | 12.92% | 3.11% | 9.54% | |
| Performance Inception Date | Jul. 24, 2000 | |||
| iShares Russell 2000 Growth ETF | After Taxes on Distributions | ||||
| Prospectus [Line Items] | ||||
| Average Annual Return, Percent | 12.74% | 2.92% | 9.33% | |
| iShares Russell 2000 Growth ETF | After Taxes on Distributions and Sales | ||||
| Prospectus [Line Items] | ||||
| Average Annual Return, Percent | 7.73% | 2.35% | 7.79% |