Investor A C Institutional and Class R [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 |
|
| Investor A, C, Institutional and Class R | BlackRock LifePath Dynamic 2065 Fund | Institutional Shares | ||||||
| Prospectus [Line Items] | ||||||
| Annual Return [Percent] | 21.02% | 16.50% | 22.39% | (18.55%) | 18.43% | 13.99% |