Class K [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 |
|
| Class K | BlackRock LifePath Dynamic 2060 Fund | Class K Shares | ||||||||
| Prospectus [Line Items] | ||||||||
| Annual Return [Percent] | 21.41% | 17.36% | 22.62% | (18.51%) | 18.43% | 14.62% | 26.74% | (8.45%) |