S000004332 [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 U.S. Utilities ETF | iShares U.S. Utilities ETF | ||||||||||
| Prospectus [Line Items] | ||||||||||
| Annual Return [Percent] | 15.27% | 23.24% | (5.05%) | 0.22% | 16.76% | (1.06%) | 24.36% | 3.91% | 11.96% | 16.51% |