S000004346 [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 1000 Growth Index (Returns do not reflect deductions for fees, expenses or taxes) | ||||
| Prospectus [Line Items] | ||||
| Average Annual Return, Percent | 18.56% | 15.32% | 18.13% | |
| iShares Russell 1000 Growth ETF | ||||
| Prospectus [Line Items] | ||||
| Average Annual Return, Percent | 18.34% | 15.13% | 17.92% | |
| Performance Inception Date | May 22, 2000 | |||
| iShares Russell 1000 Growth ETF | After Taxes on Distributions | ||||
| Prospectus [Line Items] | ||||
| Average Annual Return, Percent | 18.23% | 14.96% | 17.67% | |
| iShares Russell 1000 Growth ETF | After Taxes on Distributions and Sales | ||||
| Prospectus [Line Items] | ||||
| Average Annual Return, Percent | 10.92% | 12.16% | 15.29% |