S000023506 [Member] Annual Total Returns |
12 Months Ended | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
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 |
Dec. 31, 2015 |
|
| iShares Agency Bond ETF | iShares Agency Bond ETF | ||||||||||
| Prospectus [Line Items] | ||||||||||
| Annual Return [Percent] | 3.04% | 5.17% | (7.82%) | (1.01%) | 5.82% | 5.65% | 1.33% | 1.84% | 1.30% | 1.00% |