S000013931 [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 ESG MSCI KLD 400 ETF | iShares ESG MSCI KLD 400 ETF | ||||||||||
| Prospectus [Line Items] | ||||||||||
| Annual Return [Percent] | 17.93% | 22.48% | 28.45% | (21.66%) | 31.30% | 20.81% | 31.27% | (3.81%) | 20.96% | 10.34% |