S000069558 [Member] Annual Total Returns |
12 Months Ended | |||
|---|---|---|---|---|
Dec. 31, 2024 |
Dec. 31, 2023 |
Dec. 31, 2022 |
Dec. 31, 2021 |
|
| iShares 25+ Year Treasury STRIPS Bond ETF | iShares 25+ Year Treasury STRIPS Bond ETF | ||||
| Prospectus [Line Items] | ||||
| Annual Return [Percent] | (15.74%) | 0.98% | (41.34%) | (4.99%) |