S000004336 [Member] Average Annual Total Returns |
12 Months Ended | 60 Months Ended | 120 Months Ended | 293 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 Midcap Growth Index (Returns do not reflect deductions for fees, expenses or taxes) | ||||
| Prospectus [Line Items] | ||||
| Average Annual Return, Percent | 8.66% | 6.65% | 12.49% | |
| iShares Russell Mid-Cap Growth ETF | ||||
| Prospectus [Line Items] | ||||
| Average Annual Return, Percent | 8.46% | 6.44% | 12.26% | |
| Performance Inception Date | Jul. 17, 2001 | |||
| iShares Russell Mid-Cap Growth ETF | After Taxes on Distributions | ||||
| Prospectus [Line Items] | ||||
| Average Annual Return, Percent | 8.36% | 6.31% | 12.08% | |
| iShares Russell Mid-Cap Growth ETF | After Taxes on Distributions and Sales | ||||
| Prospectus [Line Items] | ||||
| Average Annual Return, Percent | 5.07% | 5.02% | 10.21% |