S000062159 [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 |
|
| iShares ESG Aware U.S. Aggregate Bond ETF | iShares ESG Aware U.S. Aggregate Bond ETF | ||||||
| Prospectus [Line Items] | ||||||
| Annual Return [Percent] | 1.23% | 5.51% | (13.17%) | (1.73%) | 7.41% | 8.71% |