S000013499 [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 Preferred and Income Securities ETF | iShares Preferred and Income Securities ETF | ||||||||||
| Prospectus [Line Items] | ||||||||||
| Annual Return [Percent] | 4.70% | 7.87% | 9.32% | (18.37%) | 7.09% | 7.94% | 15.62% | (4.77%) | 8.33% | 1.26% |