Investor A Institutional [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 |
|
| Investor A, Institutional | iShares Short-Term TIPS Bond Index Fund | Investor A Shares | |||||||||
| Prospectus [Line Items] | |||||||||
| Annual Return [Percent] | 5.73% | 4.45% | 4.22% | (3.15%) | 4.89% | 4.64% | 4.39% | 0.22% | 0.77% |