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 |
|
| BLACKROCK SELECT TREASURY BASED LIQUIDITY FUND | INSTITUTIONAL | ||||||||||
| Prospectus [Line Items] | ||||||||||
| Annual Return [Percent] | 4.16% | 5.14% | 4.96% | 1.44% | 0.01% | 0.40% | 2.07% | 1.70% | 0.73% | 0.20% |