S000004321 [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. Energy ETF | iShares U.S. Energy ETF | ||||||||||
| Prospectus [Line Items] | ||||||||||
| Annual Return [Percent] | 7.41% | 6.04% | (2.29%) | 60.36% | 53.37% | (33.44%) | 9.93% | (19.20%) | (1.95%) | 25.60% |