S000004433 [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 Small-Cap ETF | iShares Morningstar Small-Cap ETF | ||||||||||
| Prospectus [Line Items] | ||||||||||
| Annual Return [Percent] | 11.93% | 11.37% | 19.66% | (19.13%) | 17.59% | 6.10% | 29.37% | (13.81%) | 13.01% | 23.42% |