S000004336 [Member] Annual Total Returns |
12 Months Ended | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
Dec. 31, 2025 |
Dec. 31, 2024 |
Dec. 31, 2023 |
Dec. 31, 2022 |
Dec. 31, 2021 |
Dec. 31, 2020 |
Dec. 31, 2019 |
Dec. 31, 2018 |
Dec. 31, 2017 |
Dec. 31, 2016 |
|
| iShares Russell Mid-Cap Growth ETF | iShares Russell Mid-Cap Growth ETF | ||||||||||
| Prospectus [Line Items] | ||||||||||
| Annual Return [Percent] | 8.46% | 21.83% | 25.63% | (26.84%) | 12.50% | 35.29% | 35.14% | (4.95%) | 24.98% | 7.14% |