S000004371 [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 Morningstar Mid-Cap ETF | iShares Morningstar Mid-Cap ETF | ||||||||||
| Prospectus [Line Items] | ||||||||||
| Annual Return [Percent] | 10.12% | 15.28% | 16.21% | (16.05%) | 22.77% | 13.24% | 31.55% | (11.41%) | 19.58% | 12.13% |